CN117516015A

CN117516015A - Refrigerating system, control method and control device thereof and refrigerating equipment

Info

Publication number: CN117516015A
Application number: CN202311464055.3A
Authority: CN
Inventors: 李秋阳; 黄刚; 张巍; 张洋洋; 宋东东
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-02-06

Abstract

The invention provides a refrigerating system, a control method and a control device thereof and refrigerating equipment, wherein the refrigerating system comprises: a compressor; a condenser; a freezing evaporator; a refrigerated evaporator; the first pipeline assembly is used for communicating the compressor, the refrigeration evaporator and the refrigeration evaporator; a second piping component for connecting the condenser to the first piping component; a third pipeline assembly for connecting the refrigeration evaporator to the second pipeline assembly; the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly; the second three-way valve is arranged on the first pipeline component; the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly; under the defrosting mode, the first three-way valve and the second three-way valve open the first pipeline assembly, the first three-way valve blocks the second pipeline assembly from the first pipeline assembly, the third three-way valve blocks the second pipeline assembly from the first pipeline assembly, and the second pipeline assembly from the third pipeline assembly.

Description

Refrigerating system, control method and control device thereof and refrigerating equipment

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a refrigerating system, a control method and device thereof, refrigerating equipment and a readable storage medium.

Background

Refrigerator refrigeration systems include a compressor, a condenser, a freezing evaporator, and a refrigerating evaporator, and the prior art generally defrost the freezing evaporator by means of electric heating, but this causes the freezing chamber and the refrigerating chamber to be warmed, and power consumption is high.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first object of the present invention is to propose a refrigeration system.

A second object of the invention is to propose a refrigeration device.

A third object of the present invention is to provide a control method of a refrigeration system.

A fourth object of the present invention is to provide a control device for a refrigeration system.

A fifth object of the present invention is to propose a refrigeration device.

A sixth object of the present invention is to propose a readable storage medium.

To achieve at least one of the above objects, according to a first aspect of the present invention, there is provided a refrigeration system for a refrigeration appliance having a refrigerating compartment and a freezing compartment, the refrigeration system comprising: a compressor; a condenser; the freezing evaporator is used for cooling the freezing chamber; the refrigerating evaporator is used for cooling the refrigerating chamber; the first pipeline assembly is used for communicating the compressor, the refrigeration evaporator and the refrigeration evaporator; a second piping component for connecting the condenser to the first piping component; a third pipeline assembly for connecting the refrigeration evaporator to the second pipeline assembly; the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly; the second three-way valve is arranged on the first pipeline component; the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly; under the defrosting mode, the first three-way valve and the second three-way valve open the first pipeline assembly, the first three-way valve blocks the second pipeline assembly from the first pipeline assembly, the third three-way valve blocks the second pipeline assembly from the first pipeline assembly, and the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigerating system flows circularly among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

The refrigeration system provided by the application can be used in refrigeration equipment, and the refrigeration equipment can be a refrigerator. Specifically, the refrigeration apparatus has a refrigerating chamber for refrigerating food materials and a freezing chamber for freezing food materials, the temperature of the refrigerating chamber being higher than that of the freezing chamber. The refrigerating system is used for adjusting the temperature of the refrigerating chamber and the freezing chamber so as to keep the refrigerating chamber and the freezing chamber within a preset temperature range of low temperature. The refrigeration system is defined as follows.

The refrigerating system comprises a compressor, a condenser, a freezing evaporator and a refrigerating evaporator, wherein the freezing evaporator is used for cooling the freezing chamber, and the refrigerating evaporator is used for cooling the refrigerating chamber. The refrigerating system is provided with a refrigerant, and the refrigerant can flow among the compressor, the condenser, the freezing evaporator and the refrigerating evaporator so as to realize cooling and refrigerating of the freezing chamber and the refrigerating chamber. Further, in order to communicate the compressor, the condenser, the freeze evaporator and the refrigeration evaporator with each other, the present application provides for a first line assembly, a second line assembly and a third line assembly in a refrigeration system. The first pipeline assembly is used for communicating the compressor, the freezing evaporator and the refrigerating evaporator, and the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator through the first pipeline. The second pipeline assembly is used for connecting the condenser to the first pipeline assembly, so that the condenser can be communicated with the compressor, the freezing evaporator and the refrigerating evaporator through the first pipeline assembly, and then the refrigerant can circulate among the compressor, the condenser, the freezing evaporator and the refrigerating evaporator through the first pipeline assembly and the second pipeline assembly. The third pipeline assembly is used for connecting the refrigeration evaporator with the second pipeline assembly so that the refrigeration evaporator can be communicated with the freezing evaporator, the compressor and the condenser, and then the refrigerant can circulate among the compressor, the freezing evaporator, the refrigeration evaporator and the condenser through the first pipeline assembly, the second pipeline assembly and the third pipeline assembly.

Further, the refrigeration equipment for which the refrigeration system is used has a plurality of modes of operation, including, in particular, a defrost mode, a freeze mode and a dual-refrigeration mode. It will be appreciated that a significant amount of frost may be generated on the surface of the freeze evaporator after a prolonged period of use of the freeze evaporator, which may be required to defrost in order not to interfere with the operation of the freeze evaporator, at which point the refrigeration appliance may be put into defrost mode. In the defrosting mode, the compressor is communicated with the refrigeration evaporator and the freezing evaporator, the compressor, the refrigeration evaporator and the freezing evaporator are mutually isolated from the condenser, the refrigerant sequentially circulates among the compressor, the freezing evaporator and the refrigeration evaporator, and the refrigerant does not flow through the condenser. Specifically, the refrigerant discharged from the compressor is high-temperature and high-pressure gas, the high-temperature and high-pressure gaseous refrigerant flows into the freezing evaporator through the first pipeline component, the refrigerant releases heat in the coil pipe of the freezing evaporator so that the freezing evaporator can defrost, the temperature of the gaseous refrigerant after releasing heat is reduced, the refrigerant enters the refrigerating evaporator through the first pipeline component, and the refrigerant with low temperature absorbs heat in the refrigerating evaporator, so that the effect of cooling the refrigerating chamber or maintaining the low temperature of the refrigerating chamber is realized.

Further, in the defrosting mode, in order to enable the refrigerant to flow among the compressor, the freezing evaporator and the refrigerating evaporator only, and avoid the refrigerant to flow to the condenser, the application further provides a first three-way valve, a second three-way valve and a third three-way valve in the refrigerating system, and different connection relations among the compressor, the freezing evaporator, the refrigerating evaporator and the condenser are realized by controlling the opening and closing states of different ports of the first three-way valve, the second three-way valve and the third three-way valve. Specifically, the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly, the second three-way valve is arranged on the first pipeline assembly, and the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly. Under defrosting mode, first three-way valve and second three-way valve open first pipeline subassembly, and first three-way valve separates second pipeline subassembly and first pipeline subassembly, and third three-way valve separates second pipeline subassembly and first pipeline subassembly to separate second pipeline subassembly and third pipeline subassembly, so that refrigerant among the refrigerating system circulates in proper order between compressor, freezing evaporimeter and refrigeration evaporimeter.

Through setting up first pipeline subassembly, second pipeline subassembly and third pipeline subassembly in the refrigerating system, the connection between compressor, the refrigeration evaporator, cold storage evaporator and the condenser is realized to the accessible above-mentioned pipeline subassembly, through setting up first three-way valve in the refrigerating system, second three-way valve and third three-way valve, the break-make of first pipeline subassembly, second pipeline subassembly and third pipeline subassembly is realized to the accessible above-mentioned three-way valve, and adjust the relation of connection between the above-mentioned pipeline subassemblies, under defrosting mode, the accessible control first three-way valve, the open-close state of each port of second three-way valve and third three-way valve, realize the connection between compressor, refrigeration evaporator and the refrigeration evaporator, and block the connection between condenser and compressor, refrigeration evaporator and the refrigeration evaporator, make refrigerant flow only between compressor, refrigeration evaporator and cold storage evaporator, avoid refrigerant flow to the condenser, can dispel the heat after the high temperature high pressure gaseous refrigerant that the compressor was discharged flows into the refrigeration evaporator, in order to realize defrosting to the evaporator. Through adopting above-mentioned mode to carry out freezing evaporimeter defrosting, can improve defrosting efficiency, reduce the energy consumption, reduce the freezer difference in temperature, the fresh-keeping cycle of extension food, and can last for the cold-storage chamber transport cold volume when defrosting, for the cold-storage chamber cooling simultaneously or can maintain the temperature of cold-storage chamber, cold-storage chamber temperature rebound when avoiding defrosting, the refrigerant does not flow through the condenser when avoiding defrosting simultaneously, because the condenser of most refrigerators is pasted in refrigerator curb plate both sides, therefore can avoid low temperature refrigerant in the condenser to lead to the curb plate temperature too low and produce the condensate, avoid customer complaint, improve product quality and reliability.

The refrigerating system according to the invention can also have the following distinguishing technical characteristics:

in some aspects, optionally, the first conduit assembly comprises: the two ends of the compressor exhaust pipe are respectively connected with the inlets of the compressor and the first three-way valve; the second freezing evaporator connecting pipe is connected with the freezing evaporator; the two ends of the freezing evaporator air inlet pipe are respectively connected with a first outlet of the first three-way valve and a second freezing evaporator connecting pipe; the first freezing evaporator connecting pipe is connected with the freezing evaporator; the two ends of the first refrigeration evaporator connecting pipe are respectively connected with the first refrigeration evaporator connecting pipe and the refrigeration evaporator; the two ends of the air outlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the first inlet of the second three-way valve; the two ends of the compressor air inlet pipe are respectively connected with the outlet of the second three-way valve and the compressor; in the defrosting mode, the inlet of the first three-way valve and the first outlet of the first three-way valve are opened, and the first inlet and the outlet of the second three-way valve are opened.

In this embodiment, the first line assembly is defined. The first pipeline assembly comprises a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe, a refrigerating evaporator air outlet pipe and a compressor air inlet pipe.

Specifically, the first three-way valve is provided with an inlet, a first outlet and a second outlet, two ends of the compressor exhaust pipe are respectively connected with the compressor and the inlet of the first three-way valve, and refrigerant discharged by the compressor flows to the inlet of the first three-way valve through the compressor exhaust pipe. The second freezing evaporator connecting pipe is connected to the freezing evaporator, and two ends of the freezing evaporator air inlet pipe are respectively connected with the first outlet of the first three-way valve and the second freezing evaporator connecting pipe. Under the condition that the inlet of the first three-way valve and the first outlet of the first three-way valve are opened, the refrigerant flows out from the first outlet of the first three-way valve, sequentially flows through the freezing evaporator air inlet pipe and the second freezing evaporator connecting pipe, and then flows into the freezing evaporator. The high-temperature and high-pressure refrigerant dissipates heat in the freezing evaporator, and the defrosting effect of the freezing evaporator is realized. The first freezing evaporator connecting pipe is connected with the freezing evaporator, two ends of the first refrigerating evaporator connecting pipe are respectively connected with the first freezing evaporator connecting pipe and the refrigerating evaporator, and a refrigerant discharged by the freezing evaporator sequentially flows through the first freezing evaporator connecting pipe and the first refrigerating evaporator connecting pipe to enter the refrigerating evaporator. The temperature of the refrigerant is reduced after heat dissipation in the freezing evaporator, and the refrigerant with reduced temperature can absorb heat in the refrigerating evaporator so that the refrigerating evaporator can cool the refrigerating chamber or keep the refrigerating chamber at a low temperature. The second three-way valve is provided with a first inlet, a second inlet and an outlet, two ends of an air outlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the first inlet of the second three-way valve, and the refrigerant flows out of the refrigeration evaporator and then flows to the first inlet of the second three-way valve through the air outlet pipe of the refrigeration evaporator. The two ends of the air inlet pipe of the compressor are respectively connected with the outlet of the second three-way valve and the compressor, and under the condition that the first inlet and the outlet of the second three-way valve are opened, refrigerant flows back into the compressor through the air inlet pipe of the compressor after passing through the second three-way valve. Therefore, the circulation of the refrigerant among the compressor, the freezing evaporator and the refrigerating evaporator in the defrosting mode can be realized, and the defrosting effect of the freezing evaporator is realized.

In the defrosting mode, the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator by opening the inlet of the first three-way valve and the first outlet of the first three-way valve and opening the first inlet and the outlet of the second three-way valve, and the refrigerant is prevented from flowing into the condenser, so that the defrosting effect of the freezing evaporator is realized.

In some aspects, optionally, the second conduit assembly comprises: the two ends of the condenser air inlet pipe are respectively connected with the second outlet of the first three-way valve and the condenser; the two ends of the condenser liquid outlet pipe are respectively connected with inlets of the condenser and the third three-way valve; one end of the liquid inlet pipe of the freezing evaporator is connected with the first freezing evaporator connecting pipe and the first refrigerating evaporator connecting pipe, and the other end of the liquid inlet pipe of the freezing evaporator is connected with the first outlet of the third three-way valve; one end of the second freezing evaporator connecting pipe is connected to a second inlet of the second three-way valve, under the freezing mode, an inlet of the first three-way valve and a second outlet of the first three-way valve are opened, a first outlet of the first three-way valve is closed, a second inlet of the second three-way valve and an outlet of the second three-way valve are opened, a first inlet of the second three-way valve is closed, an inlet of the third three-way valve and a first outlet of the third three-way valve are opened, and therefore refrigerant in the refrigerating system flows circularly among the compressor, the condenser and the freezing evaporator in sequence.

In this embodiment, the structure of the second line assembly is defined. The second pipeline component comprises a condenser air inlet pipe, a condenser liquid outlet pipe and a freezing evaporator liquid inlet pipe. The first three-way valve is provided with an inlet, a first outlet and a second outlet, two ends of the condenser air inlet pipe are respectively connected with the second outlet of the first three-way valve and the condenser, and the condenser can be communicated with the compressor by opening the inlet and the second outlet of the first three-way valve and closing the first outlet of the first three-way valve. The refrigerant discharged from the compressor flows into the condenser through the compressor discharge pipe, the first three-way valve, and the condenser intake pipe with the inlet and the second outlet of the first three-way valve opened and the first outlet of the first three-way valve closed.

The third three-way valve is provided with an inlet, a first outlet and a second outlet, two ends of a liquid outlet pipe of the condenser are respectively connected with the condenser and the inlet of the third three-way valve, and the refrigerant flows out of the condenser and flows to the inlet of the third three-way valve through the liquid outlet pipe of the condenser. One end of the liquid inlet pipe of the freezing evaporator is connected with the first freezing evaporator connecting pipe and the first refrigerating evaporator connecting pipe, the other end of the liquid inlet pipe of the freezing evaporator is connected with the first outlet of the third three-way valve, and under the condition that the first outlet and the inlet of the third three-way valve are opened and the second outlet of the third three-way valve is closed, the refrigerant sequentially flows through the liquid inlet pipe of the freezing evaporator and the first freezing evaporator connecting pipe through the third three-way valve and flows to the freezing evaporator. One end of the second freezing evaporator connecting pipe is connected to the second inlet of the second three-way valve, and the refrigerant flows out of the freezing evaporator and flows to the second three-way valve through the second freezing evaporator connecting pipe. Because the both ends of compressor intake pipe are connected in export and the compressor of second three-way valve, consequently, under the condition that the second import of second three-way valve and the export of second three-way valve are opened, and the first import of second three-way valve is closed, the refrigerant flows into the compressor intake pipe through the second three-way valve, then flows back into in the compressor, realizes the circulation flow of refrigerant between compressor, condenser and freezing evaporimeter.

Under the freezing mode, through controlling the inlet of the first three-way valve and the second outlet of the first three-way valve to be opened, the first outlet of the first three-way valve is closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are opened, the first inlet of the second three-way valve is closed, the inlet of the third three-way valve and the first outlet of the third three-way valve are opened, the end-to-end connection among the compressor, the condenser and the refrigeration evaporator can be realized, the refrigerant can circulate among the compressor, the condenser and the refrigeration evaporator in sequence, and the refrigeration function of the refrigeration evaporator to the refrigeration chamber is realized.

In some aspects, optionally, the third conduit assembly comprises: the two ends of the liquid inlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the second outlet of the third three-way valve; under the double refrigeration mode, an inlet of the first three-way valve and a second outlet of the first three-way valve are opened, a first outlet of the first three-way valve is closed, a second inlet of the second three-way valve and an outlet of the second three-way valve are opened, a first inlet of the second three-way valve is closed, an inlet of the third three-way valve and a second outlet of the third three-way valve are opened, and a first outlet of the third three-way valve is closed, so that refrigerant in the refrigeration system flows circularly among the compressor, the condenser, the refrigeration evaporator and the refrigeration evaporator in sequence.

In this embodiment, the structure of the third line assembly is defined. The third pipeline assembly comprises a refrigerating evaporator liquid inlet pipe. The third three-way valve is provided with an inlet, a first outlet and a second outlet, two ends of a liquid inlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the second outlet of the third three-way valve, and under the condition that the inlet of the third three-way valve and the second outlet of the third three-way valve are opened and the first outlet of the third three-way valve is closed, refrigerant in a liquid outlet pipe of the condenser flows into the refrigeration evaporator through the third three-way valve. And, since the refrigerating evaporator is connected to the freezing evaporator through the first refrigerating evaporator connecting pipe and the first freezing evaporator connecting pipe, in a case where the second inlet of the second three-way valve and the outlet of the second three-way valve are opened and the first inlet of the second three-way valve is closed, the refrigerant in the refrigerating evaporator can flow into the freezing evaporator, and the freezing evaporator can communicate with the compressor so that the refrigerant can circulate among the compressor, the condenser, the refrigerating evaporator and the freezing evaporator.

Under the dual refrigeration mode, the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is closed, so that a compressor, a condenser, a refrigeration evaporator and a refrigeration connector are sequentially connected end to end, and a refrigerant sequentially flows among the compressor, the condenser, the refrigeration evaporator and the refrigeration evaporator, thereby realizing the refrigeration function of the refrigeration evaporator and the refrigeration evaporator on the refrigeration chamber and the refrigeration chamber.

In some aspects, optionally, the refrigeration system further comprises: the first capillary section is arranged on the first freezing evaporator connecting pipe; the second capillary section is arranged on the liquid inlet pipe of the freezing evaporator; and the third capillary section is arranged on the liquid inlet pipe of the refrigeration evaporator.

In this solution, the refrigeration system is further defined. The refrigeration system further includes a first capillary segment, a second capillary segment, and a third capillary segment. The first capillary section is arranged on the first freezing evaporator connecting pipe, and in the defrosting mode, the refrigerant discharged by the freezing evaporator flows through the first capillary section arranged on the first freezing evaporator connecting pipe and then enters the refrigerating evaporator. The first capillary section has the effect of cooling and reducing pressure on the refrigerant, the refrigerant discharged by the compressor is in a high-temperature and high-pressure state in a defrosting mode, the refrigerant with high temperature and high pressure enters the freezing evaporator to dissipate heat and reduce temperature, the defrosting effect of the freezing evaporator is achieved, the refrigerant with low temperature and high pressure after heat dissipation is called as the refrigerant with medium temperature and high pressure state, the refrigerant flows through the first capillary section, the first capillary section reduces temperature and pressure on the refrigerant, the refrigerant is called as the refrigerant with low temperature and low pressure state, the refrigerant with low temperature and low pressure state flows into the refrigerating evaporator to absorb heat, so that the refrigerating evaporator can cool the refrigerating chamber or keep the refrigerating chamber in the low temperature state, and the refrigerating function of the refrigerating evaporator is achieved.

Further, the second capillary segment is arranged on the liquid inlet pipe of the freezing evaporator. In the freezing mode, after being discharged from the condenser, the refrigerant flows through the second capillary section to enter the freezing evaporator, and the temperature and the pressure of the refrigerant are reduced in the process of flowing through the second capillary section, so that the refrigerant in a low-temperature low-pressure state is formed. The refrigerant in the low-temperature and low-pressure state flows into the freezing evaporator to absorb heat, so that the freezing evaporator can cool the freezing chamber or keep the freezing chamber in the low-temperature state, and the refrigerating function of the freezing evaporator is realized.

Further, the third capillary section is provided in the liquid inlet pipe of the refrigeration evaporator. In the double-refrigeration mode, after being discharged from the condenser, the refrigerant flows through the third capillary section to enter the refrigeration evaporator, and the temperature and the pressure of the refrigerant are reduced in the process of flowing through the third capillary section, so that the refrigerant in a low-temperature and low-pressure state is formed. The refrigerant in the low-temperature and low-pressure state flows into the refrigerating evaporator to absorb heat, so that the refrigerating evaporator can cool the refrigerating chamber or keep the refrigerating chamber in the low-temperature state, and the refrigerating function of the refrigerating evaporator is realized.

Through set up first capillary section on first freezing evaporator connecting pipe, set up the second capillary section on freezing evaporator feed liquor, set up the third capillary section on refrigerating evaporator feed liquor pipe, can cool down the depressurization to the refrigerant through first capillary section, second capillary section and third capillary section to make the refrigerant can absorb heat in freezing evaporator or refrigerating evaporator, realize the refrigeration function of freezing evaporator and refrigerating evaporator.

In some aspects, optionally, the refrigeration system further comprises: the refrigerating fan is arranged adjacent to the refrigerating evaporator; the refrigerating fan is arranged adjacent to the refrigerating evaporator; and the condenser fan is arranged adjacent to the condenser, and in the defrosting mode, the refrigerating fan and the condenser fan are shut down, and the refrigerating fan operates.

In this solution, the refrigeration system is further defined. The refrigeration system also includes a refrigeration fan, and a condenser fan. The refrigerating fan is arranged adjacent to the refrigerating evaporator, and can generate air flow near the refrigerating evaporator under the condition that the refrigerating fan operates, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the refrigerating capacity of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the refrigerating fan is arranged adjacent to the refrigerating evaporator, and under the condition that the refrigerating fan operates, the refrigerating fan can generate air flow near the refrigerating evaporator, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the cold energy of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the condenser fan is arranged adjacent to the condenser, and under the condition that the condenser fan operates, air flow produced by the condenser fan can radiate heat of the condenser so as to bring heat of the condenser into the external environment of refrigeration equipment used by the refrigeration system.

Further, in the defrosting mode, the freezing fan and the condenser fan are turned off, and the refrigerating fan operates to improve the defrosting effect.

In some aspects, optionally, the refrigeration system further comprises: the filters are respectively arranged on the first pipeline assembly and the second pipeline assembly.

In this solution, the refrigeration system is further defined. The refrigeration system further comprises a plurality of filters which are respectively arranged on the first pipeline component and the second pipeline component, and specifically, the filters are respectively arranged on the condenser liquid outlet pipe and the refrigerating evaporator liquid inlet pipe. The filter can filter the refrigerant, avoids the impurity in the refrigerant from blocking each part and pipeline in the refrigerating system, improves the reliability of the refrigerating system, and prolongs the service life of the refrigerating system.

In some embodiments, optionally, the refrigeration system further comprises a controller electrically connected to the first three-way valve, the second three-way valve, and the third three-way valve, the controller further electrically connected to the refrigeration fan, and the condenser fan. The controller is used for controlling the opening and closing of each port of the first three-way valve, the second three-way valve and the third three-way valve and controlling the operation of the refrigerating fan, the refrigerating fan and the condenser fan.

The second aspect of the invention also proposes a refrigeration apparatus comprising the refrigeration system according to the first aspect of the invention.

The refrigeration equipment provided by the second aspect of the invention has all the beneficial effects of the refrigeration system because the refrigeration equipment comprises the refrigeration system provided by the first aspect of the invention.

The refrigeration appliance may be a refrigerator.

The third aspect of the present invention also provides a control method of a refrigeration system, for a refrigeration system as set forth in the first aspect of the present invention, where the control method of the refrigeration system includes: receiving a defrosting instruction; controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator; the first three-way valve and the second three-way valve are controlled to open the first pipeline assembly, the first three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, the third three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, and the second pipeline assembly is controlled to block the third pipeline assembly, so that a refrigerant in the refrigerating system flows circularly among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

The control method of the refrigeration system provided by the application can be used for the refrigeration system provided by the first aspect of the application, and the refrigeration system can be used for refrigeration equipment, wherein the refrigeration equipment can be a refrigerator. Specifically, the refrigeration apparatus has a refrigerating chamber for refrigerating food materials and a freezing chamber for freezing food materials, the temperature of the refrigerating chamber being higher than that of the freezing chamber. The refrigerating system is used for adjusting the temperature of the refrigerating chamber and the freezing chamber so as to keep the refrigerating chamber and the freezing chamber within a preset temperature range of low temperature. The control method of the refrigeration system is defined as follows.

A defrost command is first received and then the compressor, the freeze evaporator and the refrigeration evaporator in the refrigeration system are controlled to operate. The refrigeration system comprises a first pipeline component for connecting the compressor, the freezing evaporator and the refrigerating evaporator, and the technical effect of defrosting the freezing evaporator can be achieved by enabling a refrigerant to circulate among the compressor, the freezing evaporator and the refrigerating evaporator. Because be equipped with a plurality of pipeline subassemblies in the refrigerating system, in order to realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser, still set up first three-way valve, second three-way valve and third three-way valve in the refrigerating system, can realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser through the switching of each port of control first three-way valve, second three-way valve and third three-way valve.

Specifically, the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly, the second three-way valve is arranged on the first pipeline assembly, and the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly. After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separating the second pipeline assembly from the third pipeline assembly. Therefore, the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence, and the defrosting effect of the freezing evaporator is realized.

By adopting the control method, the connection among the compressor, the freezing evaporator and the refrigerating evaporator can be realized by controlling the opening and closing states of the ports of the first three-way valve, the second three-way valve and the third three-way valve, and the connection among the condenser, the compressor, the freezing evaporator and the refrigerating evaporator is blocked, so that the refrigerant only flows among the compressor, the freezing evaporator and the refrigerating evaporator, the refrigerant is prevented from flowing to the condenser, and the high-temperature high-pressure gaseous refrigerant discharged by the compressor can dissipate heat after flowing into the freezing evaporator, so that the defrosting of the freezing evaporator is realized. By adopting the control method to defrost the freezing evaporator, the defrosting efficiency can be improved, the energy consumption can be reduced, the temperature difference of the freezing chamber can be reduced, the food fresh-keeping period can be prolonged, in addition, the refrigerating capacity can be continuously conveyed to the refrigerating chamber during defrosting, meanwhile, the temperature of the refrigerating chamber can be reduced or maintained, the temperature of the refrigerating chamber during defrosting is avoided from rising, meanwhile, the refrigerant does not flow through the condenser during defrosting, and as the condensers of most refrigerators are attached to the two sides of the side plates of the refrigerators, the problem that condensed water is generated due to the fact that the temperature of the side plates is too low due to low-temperature refrigerant in the condensers can be avoided, customer complaints are avoided, and the quality and reliability of products are improved.

In some embodiments, optionally, the first pipeline assembly further includes a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe, and a compressor air inlet pipe, the first pipeline assembly is opened by controlling the first three-way valve and the second three-way valve, the second pipeline assembly is blocked by controlling the first three-way valve, the second pipeline assembly is blocked by controlling the third three-way valve, and the second pipeline assembly is blocked by the third pipeline assembly, and the first pipeline assembly is blocked by the third three-way valve, including: the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

In this technical solution, a control method of the refrigeration system is further defined. The first pipeline component comprises a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe and a compressor air inlet pipe. Wherein, compressor blast pipe, first three-way valve, freezing evaporimeter intake pipe, first freezing evaporimeter connecting pipe, freezing evaporimeter, second freezing evaporimeter connecting pipe, first refrigeration evaporimeter connecting pipe, refrigeration evaporimeter outlet duct, second three-way valve and compressor intake pipe end to end in proper order. The compressor, the freezing evaporator and the refrigerating evaporator are connected end to end through the first pipeline component by controlling the opening and closing of each port of the first three-way valve and the second three-way valve, so that the refrigerant circularly flows among the compressor, the freezing evaporator and the refrigerating evaporator, and the defrosting effect of the freezing compressor is achieved. The steps of controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to block the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to block the second pipeline assembly from the first pipeline assembly, and blocking the second pipeline assembly from the third pipeline assembly are specifically limited.

The steps of controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to block the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to block the second pipeline assembly from the first pipeline assembly, and blocking the second pipeline assembly from the third pipeline assembly specifically comprise: the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

Under the defrosting mode, the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator, the refrigerant is prevented from flowing into the condenser, and then the defrosting effect on the freezing evaporator is achieved.

In some technical solutions, optionally, the refrigeration system further includes a refrigeration fan, and a condenser fan, the refrigeration fan is disposed adjacent to the refrigeration evaporator, the condenser fan is disposed adjacent to the condenser, and the control method of the refrigeration system further includes: and controlling the refrigeration fan and the condenser fan to be turned off, and controlling the refrigeration fan to operate.

In this technical solution, a control method of the refrigeration system is further defined. The refrigeration system also includes a refrigeration fan, and a condenser fan. The refrigerating fan is arranged adjacent to the refrigerating evaporator, and can generate air flow near the refrigerating evaporator under the condition that the refrigerating fan operates, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the refrigerating capacity of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the refrigerating fan is arranged adjacent to the refrigerating evaporator, and under the condition that the refrigerating fan operates, the refrigerating fan can generate air flow near the refrigerating evaporator, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the cold energy of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the condenser fan is arranged adjacent to the condenser, and under the condition that the condenser fan operates, air flow produced by the condenser fan can radiate heat of the condenser so as to bring heat of the condenser into the external environment of refrigeration equipment used by the refrigeration system.

After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, controlling the freezing fan and the condenser fan to be turned off and controlling the refrigerating fan to operate, so that the defrosting effect on the freezing evaporator can be improved.

In some embodiments, optionally, the second pipeline assembly includes a condenser air inlet pipe, a condenser liquid outlet pipe, and a freezing evaporator liquid inlet pipe, and the control method further includes: receiving a freezing instruction; controlling the operation of the compressor, the refrigeration evaporator and the condenser; the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the first outlet of the third three-way valve are controlled to be opened, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated.

In this technical solution, a control method of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a freezing mode, and in order to enter the freezing mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, and the freezing evaporator. The second pipeline component comprises a condenser air inlet pipe, a condenser liquid outlet pipe and a freezing evaporator liquid inlet pipe, after receiving a freezing instruction and controlling the compressor, the freezing evaporator and the condenser to operate, the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the first outlet of the third three-way valve are controlled to be opened, and the compressor, the compressor air outlet pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser and the freezing evaporator in sequence, and the freezing evaporator can cool or keep the freezing chamber at a low temperature.

In some aspects, optionally, the third pipeline assembly comprises a refrigeration evaporator liquid inlet pipe, and the control method further comprises: receiving a double-refrigeration instruction; controlling the operation of the compressor, the refrigeration evaporator and the condenser; the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is controlled to be closed, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the refrigerating evaporator liquid inlet pipe, the refrigerating evaporator air outlet pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator, the second refrigerating evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated.

In this technical solution, a control method of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a dual refrigeration mode, and in order to enter the dual refrigeration mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, the refrigeration evaporator, and the refrigeration evaporator. The third pipeline component comprises a refrigerating evaporator liquid inlet pipe, after receiving double refrigerating instructions and controlling the operation of the compressor, the refrigerating evaporator, the freezing evaporator and the condenser, the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is controlled to be closed, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the refrigerating evaporator liquid inlet pipe, the refrigerating evaporator air outlet pipe, the first refrigerating evaporator connecting pipe, the freezing evaporator, the second refrigerating evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser, the refrigeration evaporator and the freezing evaporator in sequence, and the refrigeration evaporator and the freezing evaporator can respectively cool or keep low temperature.

The fourth aspect of the present invention also provides a control device for a refrigeration system, the refrigeration system including a compressor, a refrigeration evaporator, a first pipeline assembly, a second pipeline assembly, a third pipeline assembly, a first three-way valve, a second three-way valve, and a third three-way valve, the control device for a refrigeration system including: the control module is used for controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator; the instruction receiving module is used for receiving a defrosting instruction; the control module is also used for controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separate the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigerating system can flow circularly among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

The control device of the refrigerating system can be used in refrigerating equipment, and the refrigerating equipment can be a refrigerator. Specifically, the refrigeration apparatus has a refrigerating chamber for refrigerating food materials and a freezing chamber for freezing food materials, the temperature of the refrigerating chamber being higher than that of the freezing chamber. The refrigerating system is used for adjusting the temperature of the refrigerating chamber and the freezing chamber so as to keep the refrigerating chamber and the freezing chamber within a preset temperature range of low temperature. The control device of the refrigeration system is defined below.

The refrigerating system comprises a compressor, a freezing evaporator, a refrigerating evaporator, a first pipeline assembly, a second pipeline assembly and a first three-way valve, and the control device of the refrigerating system comprises a control module and an instruction receiving module. The control module is used for controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator. The refrigeration system comprises a first pipeline component for connecting the compressor, the freezing evaporator and the refrigerating evaporator, and the technical effect of defrosting the freezing evaporator can be achieved by enabling a refrigerant to circulate among the compressor, the freezing evaporator and the refrigerating evaporator. Because be equipped with a plurality of pipeline subassemblies in the refrigerating system, in order to realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser, still set up first three-way valve, second three-way valve and third three-way valve in the refrigerating system, can realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser through the switching of each port of control first three-way valve, second three-way valve and third three-way valve. The control module is also used for controlling the opening and closing of the ports of the first three-way valve, the second three-way valve and the third three-way valve.

The control module is also used for controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separate the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigerating system can flow circularly among the compressor, the freezing evaporator and the refrigerating evaporator in sequence. Specifically, the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly, the second three-way valve is arranged on the first pipeline assembly, and the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly. After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separating the second pipeline assembly from the third pipeline assembly. Therefore, the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence, and the defrosting effect of the freezing evaporator is realized.

Through adopting above-mentioned controlling means, can realize the connection between compressor, freezing evaporimeter and the cold storage evaporimeter through the open-close state of each port of control first three-way valve, second three-way valve and third three-way valve to block the connection between condenser and compressor, freezing evaporimeter and the cold storage evaporimeter, make the refrigerant flow only between compressor, freezing evaporimeter and cold storage evaporimeter, avoid refrigerant flow to the condenser, can dispel the heat after the high temperature high pressure gaseous refrigerant that is discharged because the compressor flows into the freezing evaporimeter, in order to realize the defrosting to freezing evaporimeter. By adopting the control device to defrost the freezing evaporator, the defrosting efficiency can be improved, the energy consumption is reduced, the temperature difference of the freezing chamber is reduced, the food fresh-keeping period is prolonged, the refrigerating capacity can be continuously conveyed to the refrigerating chamber during defrosting, meanwhile, the temperature of the refrigerating chamber can be reduced or maintained, the temperature of the refrigerating chamber is prevented from rising back during defrosting, and meanwhile, the refrigerant does not flow through the condenser during defrosting.

In some embodiments, optionally, the first pipeline assembly further includes a compressor exhaust pipe, a second refrigeration evaporator connecting pipe, a refrigeration evaporator air inlet pipe, a refrigeration evaporator air outlet pipe, a first refrigeration evaporator connecting pipe, and a compressor air inlet pipe, and the control module is specifically configured to: the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device of the refrigeration system is further defined. The first pipeline assembly further comprises a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe and a compressor air inlet pipe. Wherein, compressor blast pipe, first three-way valve, freezing evaporimeter intake pipe, first freezing evaporimeter connecting pipe, freezing evaporimeter, second freezing evaporimeter connecting pipe, first refrigeration evaporimeter connecting pipe, refrigeration evaporimeter outlet duct, second three-way valve and compressor intake pipe end to end in proper order. The compressor, the freezing evaporator and the refrigerating evaporator are connected end to end through the first pipeline component by controlling the opening and closing of each port of the first three-way valve and the second three-way valve, so that the refrigerant circularly flows among the compressor, the freezing evaporator and the refrigerating evaporator, and the defrosting effect of the freezing compressor is achieved. The control module is specifically used for controlling the inlet of the first three-way valve and the first outlet of the first three-way valve to be opened, controlling the first inlet and the outlet of the second three-way valve to be opened, and controlling the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve to be closed so as to enable the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe to be sequentially communicated.

In some technical solutions, optionally, the refrigeration system further includes a refrigeration fan, a refrigeration fan and a condenser fan, the refrigeration fan is disposed adjacent to the refrigeration evaporator, the condenser fan is disposed adjacent to the condenser, and the control module is further configured to: and controlling the refrigeration fan and the condenser fan to be turned off, and controlling the refrigeration fan to operate.

In this embodiment, the control device of the refrigeration system is further defined. The refrigeration system also includes a refrigeration fan, and a condenser fan. The refrigerating fan is arranged adjacent to the refrigerating evaporator, and can generate air flow near the refrigerating evaporator under the condition that the refrigerating fan operates, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the refrigerating capacity of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the refrigerating fan is arranged adjacent to the refrigerating evaporator, and under the condition that the refrigerating fan operates, the refrigerating fan can generate air flow near the refrigerating evaporator, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the cold energy of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the condenser fan is arranged adjacent to the condenser, and under the condition that the condenser fan operates, air flow produced by the condenser fan can radiate heat of the condenser so as to bring heat of the condenser into the external environment of refrigeration equipment used by the refrigeration system.

Further, the control module is also used for controlling the shutdown of the refrigerating fan and the condenser fan and controlling the operation of the refrigerating fan. After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, the defrosting effect on the freezing evaporator can be improved by controlling the freezing fan and the condenser fan to be stopped and controlling the refrigerating fan to operate.

In some embodiments, optionally, the second pipeline assembly includes a condenser air inlet pipe, a condenser liquid outlet pipe, and a freezing evaporator liquid inlet pipe, and the instruction receiving module is further configured to: receiving a freezing instruction; the control module is also used for: the method comprises the steps of controlling a compressor, a freezing evaporator and a condenser to operate, controlling an inlet of a first three-way valve and a second outlet of the first three-way valve to open, controlling a first outlet of the first three-way valve to close, controlling a second inlet of a second three-way valve and an outlet of the second three-way valve to open, controlling a first inlet of the second three-way valve to close, and controlling an inlet of a third three-way valve and a first outlet of the third three-way valve to open so that the compressor, a compressor exhaust pipe, a condenser air inlet pipe, a condenser liquid outlet pipe, a freezing evaporator liquid inlet pipe, a first freezing evaporator connecting pipe, a freezing evaporator, a second freezing evaporator connecting pipe and a compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a freezing mode, and in order to enter the freezing mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, and the freezing evaporator. The second pipeline component comprises a condenser air inlet pipe, a condenser liquid outlet pipe and a freezing evaporator liquid inlet pipe, the instruction receiving module is further used for receiving freezing instructions, the control module is further used for controlling the opening of an inlet of the first three-way valve and a second outlet of the first three-way valve, controlling the closing of a first outlet of the first three-way valve, controlling the opening of a second inlet of the second three-way valve and an outlet of the second three-way valve, controlling the closing of a first inlet of the second three-way valve, controlling the opening of an inlet of the third three-way valve and a first outlet of the third three-way valve, so that the compressor, the compressor air outlet pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser and the freezing evaporator in sequence, and the freezing evaporator can cool or keep the freezing chamber at a low temperature.

In some aspects, optionally, the third pipeline assembly includes a refrigeration evaporator feed line, and the instruction receiving module is further configured to: receiving a double-refrigeration instruction; the control module is also used for: the method comprises the steps of controlling a compressor, a refrigeration evaporator, a freezing evaporator and a condenser to operate, controlling an inlet of a first three-way valve and a second outlet of the first three-way valve to open, controlling a first outlet of the first three-way valve to close, controlling a second inlet of a second three-way valve and an outlet of the second three-way valve to open, controlling a first inlet of the second three-way valve to close, controlling an inlet of a third three-way valve and a second outlet of the third three-way valve to open, and controlling a first outlet of the third three-way valve to close so that the compressor, a compressor exhaust pipe, a condenser air inlet pipe, the condenser, a condenser liquid outlet pipe, a refrigeration evaporator liquid inlet pipe, a refrigeration evaporator air outlet pipe, a first refrigeration evaporator connecting pipe, a refrigeration evaporator, a second refrigeration evaporator connecting pipe and a compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a dual refrigeration mode, and in order to enter the dual refrigeration mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, the freezing evaporator, and the refrigerating evaporator. The third pipeline component comprises a refrigerating evaporator liquid inlet pipe, the instruction receiving module is further used for receiving a double-refrigerating instruction, the control module is further used for controlling the operation of a compressor, a refrigerating evaporator, a freezing evaporator and a condenser, controlling the opening of an inlet of a first three-way valve and a second outlet of the first three-way valve, controlling the closing of the first outlet of the first three-way valve, controlling the opening of a second inlet of a second three-way valve and an outlet of the second three-way valve, controlling the closing of the first inlet of the second three-way valve, controlling the opening of the inlet of the third three-way valve and the opening of the second outlet of the third three-way valve, and controlling the closing of the first outlet of the third three-way valve so as to enable the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe of the refrigerating evaporator, the refrigerating evaporator air outlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe to be sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser, the refrigeration evaporator and the freezing evaporator in sequence, and the refrigeration evaporator and the freezing evaporator can respectively cool or keep the temperature of the refrigeration chamber and the freezing chamber.

The fifth aspect of the present invention also proposes a refrigeration apparatus comprising: a control device of a refrigeration system according to a fourth aspect of the present invention.

The refrigeration equipment provided by the fifth aspect of the invention has all the beneficial effects of the control device of the refrigeration system because the refrigeration equipment comprises the control device of the refrigeration system provided by the fourth aspect of the invention.

The sixth aspect of the present invention also proposes a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the control method of a refrigeration system as proposed in the third aspect of the present invention. Thus having all the technical advantages of the control method of the refrigeration system in any of the possible designs of the third aspect described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 shows one of the structural schematic diagrams of a refrigeration system according to an embodiment of the present invention;

FIG. 2 shows a second schematic diagram of a refrigeration system according to an embodiment of the present invention;

FIG. 3 shows a third schematic diagram of a refrigeration system according to an embodiment of the present invention;

FIG. 4 illustrates one of the flow diagrams of the control method of the refrigeration system of one embodiment of the present invention;

FIG. 5 illustrates a second flow chart of a method of controlling a refrigeration system according to an embodiment of the present invention;

FIG. 6 illustrates a third flow chart of a method of controlling a refrigeration system according to an embodiment of the present invention;

FIG. 7 shows a fourth flow diagram of a method of controlling a refrigeration system according to one embodiment of the present invention;

FIG. 8 illustrates a fifth flow chart of a method of controlling a refrigeration system in accordance with one embodiment of the present invention;

fig. 9 is a block diagram showing a control apparatus of a refrigeration system according to an embodiment of the present invention.

Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 3 and 9 is:

100 refrigeration system, 110 compressor, 120 condenser, 130 chilled evaporator, 140 chilled evaporator, 150 first piping assembly, 151 compressor discharge piping, 152 second chilled evaporator connection piping, 153 chilled evaporator intake piping, 154 first chilled evaporator connection piping, 155 first chilled evaporator connection piping, 156 chilled evaporator outlet piping, 157 compressor intake piping, 160 second piping assembly, 161 condenser intake piping, 162 condenser discharge piping, 163 chilled evaporator intake piping, 170 third piping assembly, 171 chilled evaporator intake piping, 180 filter, 210 first three-way valve, 211 first three-way valve inlet, 212 first three-way valve outlet, 213 first three-way valve second outlet, 220 second three-way valve, 221 second three-way valve first inlet, 222 second three-way valve second inlet, 223 third three-way valve outlet, 230 third three-way valve, 231 third three-way valve inlet, 232 third three-way valve first outlet, 233 third three-way valve second outlet, 240 refrigeration fan, 250 fan, 270 fan, 280 condenser fan, 212 first capillary tube section, 300, third capillary tube section, and a capillary control module receiving the command from the control module, 310.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

A refrigeration system 100, a control method of the refrigeration system, a control apparatus 300 of the refrigeration system, a refrigeration device, and a readable storage medium provided according to some embodiments of the present invention are described below with reference to fig. 1 to 9.

In one embodiment according to the present application, as shown in fig. 1, the present application proposes a refrigeration system 100, the refrigeration system 100 being for a refrigeration appliance having a refrigeration compartment and a freezer compartment, the refrigeration system 100 comprising: a compressor 110; a condenser 120; a freezing evaporator 130 for cooling the freezing chamber; a refrigerating evaporator 140 for cooling the refrigerating compartment; a first pipe assembly 150 for communicating the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140; a second piping assembly 160 for connecting the condenser 120 to the first piping assembly 150; a third conduit assembly 170 for connecting the refrigerated evaporator 140 to the second conduit assembly 160; a first three-way valve 210 connected to the first and second line assemblies 150 and 160; a second three-way valve 220 disposed on the first pipeline assembly 150; a third three-way valve 230 disposed in the second pipeline assembly 160 and connected to the third pipeline assembly 170; in the defrosting mode, the first three-way valve 210 and the second three-way valve 220 open the first pipeline assembly 150, the first three-way valve 210 blocks the second pipeline assembly 160 from the first pipeline assembly 150, the third three-way valve 230 blocks the second pipeline assembly 160 from the first pipeline assembly 150, and blocks the second pipeline assembly 160 from the third pipeline assembly 170, so that the refrigerant in the refrigeration system 100 circulates among the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 in sequence.

The refrigeration system 100 proposed in the present application can be used in a refrigeration appliance, which may be a refrigerator. Specifically, the refrigeration apparatus has a refrigerating chamber for refrigerating food materials and a freezing chamber for freezing food materials, the temperature of the refrigerating chamber being higher than that of the freezing chamber. The refrigeration system 100 is used to temperature-condition the refrigerator compartment and the freezer compartment to maintain the refrigerator compartment and the freezer compartment within a preset temperature range of low temperatures. The refrigeration system 100 is defined as follows.

The refrigeration system 100 includes a compressor 110, a condenser 120, a freezing evaporator 130, and a refrigerating evaporator 140, wherein the freezing evaporator 130 is used for cooling a freezing chamber, and the refrigerating evaporator 140 is used for cooling a refrigerating chamber. The refrigeration system 100 has a refrigerant therein, and the refrigerant can flow among the compressor 110, the condenser 120, the freezing evaporator 130 and the refrigerating evaporator 140 to cool the freezing chamber and the refrigerating chamber. Further, in order to communicate the compressor 110, the condenser 120, the freezing evaporator 130 and the refrigerating evaporator 140 with each other, the present application provides the first, second and third pipe assemblies 150, 160 and 170 in the refrigerating system 100. The first pipe assembly 150 is used for communicating the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140, and the refrigerant can circulate among the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 through the first pipe. The second pipe assembly 160 is used to connect the condenser 120 to the first pipe assembly 150 such that the condenser 120 can communicate with the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 through the first pipe assembly 150, thereby enabling the refrigerant to circulate between the compressor 110, the condenser 120, the freezing evaporator 130 and the refrigerating evaporator 140 through the first pipe assembly 150 and the second pipe assembly 160. The third pipe assembly 170 is used to connect the refrigerating evaporator 140 to the second pipe assembly 160 so that the refrigerating evaporator 140 can communicate with the freezing evaporator 130, the compressor 110 and the condenser 120, thereby enabling the refrigerant to circulate among the compressor 110, the freezing evaporator 130, the refrigerating evaporator 140 and the condenser 120 through the first pipe assembly 150, the second pipe assembly 160 and the third pipe assembly 170.

Further, the refrigeration equipment for which the refrigeration system 100 is used has a variety of modes of operation, including, in particular, a defrost mode, a freeze mode, and a dual-cool mode. It will be appreciated that a large amount of frost may be generated on the surface of the freeze evaporator 130 after the freeze evaporator 130 is used for a long period of time, and in order not to affect the operation of the freeze evaporator 130, the freeze evaporator 130 needs to be defrosted, at which time the refrigeration equipment may be put into a defrost mode. In the defrost mode, the compressor 110 is in communication with the refrigeration evaporator 140 and the freezing evaporator 130, and the compressor 110, the refrigeration evaporator 140, and the freezing evaporator 130 are blocked from each other with the condenser 120, and the refrigerant circulates between the compressor 110, the freezing evaporator 130, and the refrigeration evaporator 140 in sequence, and the refrigerant does not flow through the condenser 120. Specifically, the refrigerant discharged from the compressor 110 is a high-temperature and high-pressure gas, the high-temperature and high-pressure gaseous refrigerant flows into the freezing evaporator 130 through the first pipeline assembly 150, the refrigerant releases heat in the coil of the freezing evaporator 130 to defrost the freezing evaporator 130, the released gaseous refrigerant becomes a temperature-reduced refrigerant, the refrigerant enters the refrigerating evaporator 140 through the first pipeline assembly 150, and the low-temperature refrigerant absorbs heat in the refrigerating evaporator 140, so that the effect of cooling the refrigerating chamber or maintaining the low temperature of the refrigerating chamber is achieved.

Further, in order to make the refrigerant flow only between the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 and avoid the refrigerant flowing to the condenser 120 in the defrosting mode, the present application further provides the refrigeration system 100 with a first three-way valve 210, a second three-way valve 220 and a third three-way valve 230, and different connection relations among the compressor 110, the freezing evaporator 130, the refrigerating evaporator 140 and the condenser 120 are realized by controlling the opening and closing states of different ports of the first three-way valve 210, the second three-way valve 220 and the third three-way valve 230. Specifically, the first three-way valve 210 is connected to the first pipeline assembly 150 and the second pipeline assembly 160, the second three-way valve 220 is disposed on the first pipeline assembly 150, and the third three-way valve 230 is disposed on the second pipeline assembly 160 and is connected to the third pipeline assembly 170. In the defrost mode, the first and second three-way valves 210 and 220 open the first pipe assembly 150, the first three-way valve 210 blocks the second pipe assembly 160 from the first pipe assembly 150, the third three-way valve 230 blocks the second pipe assembly 160 from the first pipe assembly 150, and blocks the second pipe assembly 160 from the third pipe assembly 170, so that the refrigerant in the refrigeration system 100 circulates among the compressor 110, the freezing evaporator 130, and the refrigerating evaporator 140 in sequence.

By providing the first, second and third pipe assemblies 150, 160 and 170 in the refrigeration system 100, connection between the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 can be achieved through the above-mentioned pipe assemblies, and connection between the condenser 120 and the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 can be blocked by providing the first, second and third three-way valves 210, 220 and 230 in the refrigeration system 100, connection between the first, second and third pipe assemblies 150, 160 and 170 can be achieved through the above-mentioned three-way valves, and connection relations between the above-mentioned pipe assemblies can be adjusted, and in the defrost mode, connection between the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 can be achieved by controlling opening and closing states of the respective ports of the first, second and third three-way valves 210, 220 and 230, and connection between the condenser 120 and the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140 can be blocked, so that refrigerant can flow only between the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140, the refrigerant condenser 120 can be prevented, and the refrigerating evaporator 130 can be cooled by cooling air from flowing into the evaporator 130 after the high temperature and high temperature discharged by the compressor 110 and the high temperature state can be discharged in the defrost mode, and the defrost mode can be achieved. Through adopting above-mentioned mode to carry out freezing evaporimeter 130 defrosting, can improve defrosting efficiency, reduce the energy consumption, reduce the freezer difference in temperature, the fresh-keeping cycle of extension food, and can last for the cold-storage chamber transport cold volume when defrosting, simultaneously for the cold-storage chamber cooling or can maintain the temperature of cold-storage chamber, avoid the cold-storage chamber temperature to rise back when defrosting, refrigerant does not flow through condenser 120 when defrosting simultaneously, because the condenser 120 of most refrigerators is in refrigerator curb plate both sides, therefore can avoid low temperature refrigerant in condenser 120 to lead to the curb plate temperature too low and produce the condensate water, avoid customer complaint, improve product quality and reliability.

In some embodiments, optionally, as shown in fig. 1, the first conduit assembly 150 comprises: the two ends of the compressor exhaust pipe 151 are respectively connected with the compressor 110 and the inlet 211 of the first three-way valve; a second freezing evaporator connecting pipe 152 connected to the freezing evaporator 130; the two ends of the freezing evaporator air inlet pipe 153 are respectively connected with the first outlet 212 of the first three-way valve and the second freezing evaporator connecting pipe 152; a first freezing evaporator connecting pipe 154 connected to the freezing evaporator 130; a first refrigerating evaporator connecting pipe 155 having both ends connected to the first freezing evaporator connecting pipe 154 and the refrigerating evaporator 140, respectively; a refrigerating evaporator air outlet pipe 156, two ends of which are respectively connected with the refrigerating evaporator 140 and a first inlet 221 of the second three-way valve; the compressor inlet pipe 157, both ends of which are respectively connected to the outlet 223 of the second three-way valve and the compressor 110; wherein in the defrost mode, the inlet 211 of the first three-way valve and the first outlet 212 of the first three-way valve are opened and the first inlet 221 and the outlet of the second three-way valve are opened.

In this embodiment, a first conduit assembly 150 is defined. The first pipe assembly 150 includes a compressor discharge pipe 151, a second freezing evaporator connecting pipe 152, a freezing evaporator inlet pipe 153, a first freezing evaporator connecting pipe 154, a first refrigerating evaporator connecting pipe 155, a refrigerating evaporator outlet pipe 156, and a compressor inlet pipe 157.

Specifically, the first three-way valve 210 has an inlet, a first outlet, and a second outlet, and both ends of the compressor discharge pipe 151 are connected to the compressor 110 and the inlet 211 of the first three-way valve, respectively, and refrigerant discharged from the compressor 110 flows to the inlet 211 of the first three-way valve through the compressor discharge pipe 151. The second freezing evaporator connecting pipe 152 is connected to the freezing evaporator 130, and both ends of the freezing evaporator air inlet pipe 153 are connected to the first outlet 212 of the first three-way valve and the second freezing evaporator connecting pipe 152, respectively. With the inlet 211 of the first three-way valve and the first outlet 212 of the first three-way valve opened, the refrigerant flows out from the first outlet 212 of the first three-way valve, flows through the freezing evaporator inlet pipe 153 and the second freezing evaporator connecting pipe 152 in order, and then flows into the freezing evaporator 130. The high-temperature and high-pressure refrigerant radiates heat in the freezing evaporator 130, thereby realizing the defrosting effect on the freezing evaporator 130. The first freezing evaporator connecting pipe 154 is connected with the freezing evaporator 130, two ends of the first refrigerating evaporator connecting pipe 155 are respectively connected with the first freezing evaporator connecting pipe 154 and the refrigerating evaporator 140, and the refrigerant discharged from the freezing evaporator 130 sequentially flows through the first freezing evaporator connecting pipe 154 and the first refrigerating evaporator connecting pipe 155 to enter the refrigerating evaporator 140. The temperature of the refrigerant is reduced after heat dissipation in the freezing evaporator 130, and the refrigerant having reduced temperature absorbs heat in the refrigerating evaporator 140 so that the refrigerating evaporator 140 can cool down the refrigerating chamber or keep the refrigerating chamber at a low temperature. The second three-way valve 220 has a first inlet, a second inlet and an outlet, and two ends of the air outlet pipe 156 of the refrigeration evaporator are respectively connected with the refrigeration evaporator 140 and the first inlet 221 of the second three-way valve, and the refrigerant flows out from the refrigeration evaporator 140 and then flows to the first inlet 221 of the second three-way valve through the air outlet pipe 156 of the refrigeration evaporator. Both ends of the compressor intake pipe 157 are connected to the outlet 223 of the second three-way valve and the compressor 110, respectively, and the refrigerant flows back into the compressor 110 through the compressor intake pipe 157 after passing through the second three-way valve 220 with the first inlet 221 and the outlet of the second three-way valve opened. In this way, in the defrost mode, circulation of the refrigerant among the compressor 110, the freeze evaporator 130 and the refrigeration evaporator 140 can be realized, and the defrost effect of the freeze evaporator 130 can be realized.

In the defrosting mode, by opening the inlet 211 of the first three-way valve and the first outlet 212 of the first three-way valve and opening the first inlet 221 and the outlet of the second three-way valve, the refrigerant can circulate among the compressor 110, the freezing evaporator 130 and the refrigerating evaporator 140, and the refrigerant is prevented from flowing into the condenser 120, thereby achieving the defrosting effect of the freezing evaporator 130.

In some embodiments, optionally, as shown in fig. 2, the second conduit assembly 160 comprises: the condenser air inlet pipe 161, two ends of which are respectively connected with the second outlet 213 of the first three-way valve and the condenser 120; the two ends of the condenser liquid outlet pipe 162 are respectively connected with the inlets 231 of the condenser 120 and the third three-way valve; a freezing evaporator liquid inlet pipe 163 having one end connected to the first freezing evaporator connecting pipe 154 and the first refrigerating evaporator connecting pipe 155 and the other end connected to the first outlet 232 of the third three-way valve; wherein one end of the second freezing evaporator connecting pipe 152 is connected to the second inlet 222 of the second three-way valve, the inlet 211 of the first three-way valve and the second outlet 213 of the first three-way valve are opened, the first outlet of the first three-way valve is closed, the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve are opened, the first inlet 221 of the second three-way valve is closed, the inlet 231 of the third three-way valve and the first outlet 232 of the third three-way valve are opened, so that the refrigerant in the refrigerating system 100 circulates among the compressor 110, the condenser 120 and the freezing evaporator 130 in sequence.

In this embodiment, the structure of the second piping assembly 160 is defined. The second line assembly 160 includes a condenser air inlet line 161, a condenser outlet line 162, and a freeze evaporator inlet line 163. The first three-way valve 210 has an inlet, a first outlet, and a second outlet, and both ends of the condenser intake pipe 161 are connected to the second outlet 213 of the first three-way valve and the condenser 120, respectively, and the condenser 120 can be communicated with the compressor 110 by opening the inlet 211 and the second outlet of the first three-way valve and closing the first outlet 212 of the first three-way valve. With the inlet 211 and the second outlet of the first three-way valve open and the first outlet 212 of the first three-way valve closed, the refrigerant discharged from the compressor 110 flows into the condenser 120 via the compressor discharge pipe 151, the first three-way valve 210, and the condenser intake pipe 161.

The third three-way valve 230 has an inlet, a first outlet and a second outlet, and two ends of the condenser outlet pipe 162 are respectively connected to the condenser 120 and the inlet 231 of the third three-way valve, and the refrigerant flows out of the condenser 120 and then flows to the inlet 231 of the third three-way valve through the condenser outlet pipe 162. One end of the freezing evaporator feed liquid pipe 163 is connected to the first freezing evaporator connecting pipe 154 and the first refrigerating evaporator connecting pipe 155, and the other end is connected to the first outlet 232 of the third three-way valve, and with the first outlet 232 and the inlet of the third three-way valve opened and the second outlet 233 of the third three-way valve closed, the refrigerant sequentially flows through the freezing evaporator feed liquid pipe 163 and the first freezing evaporator connecting pipe 154 through the third three-way valve 230 and flows toward the freezing evaporator 130. One end of the second freezing evaporator connecting pipe 152 is connected to the second inlet 222 of the second three-way valve, and the refrigerant flows out of the freezing evaporator 130 and then flows to the second three-way valve 220 through the second freezing evaporator connecting pipe 152. Since both ends of the compressor intake pipe 157 are connected to the outlet 223 of the second three-way valve and the compressor 110, in the case where the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve are opened and the first inlet 221 of the second three-way valve is closed, the refrigerant flows into the compressor intake pipe 157 through the second three-way valve 220 and then flows back into the compressor 110, achieving a circulating flow of the refrigerant among the compressor 110, the condenser 120 and the freezing evaporator 130.

In the freezing mode, by controlling the inlet 211 of the first three-way valve and the second outlet 213 of the first three-way valve to be opened, the first outlet of the first three-way valve to be closed, the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve to be opened, the first inlet 221 of the second three-way valve to be closed, the inlet 231 of the third three-way valve and the first outlet 232 of the third three-way valve to be opened, the end-to-end connection among the compressor 110, the condenser 120 and the refrigeration evaporator 140 can be realized, the refrigerant can circulate among the compressor 110, the condenser 120 and the refrigeration evaporator 130 in sequence, and the refrigeration function of the refrigeration evaporator 130 to the freezing chamber can be realized.

In some embodiments, optionally, as shown in fig. 3, the third conduit assembly 170 comprises: the two ends of the liquid inlet pipe 171 of the refrigeration evaporator are respectively connected with the refrigeration evaporator 140 and the second outlet of the third three-way valve; wherein, in the dual cooling mode, the inlet of the first three-way valve and the second outlet 213 of the first three-way valve are opened, the first outlet 212 of the first three-way valve is closed, the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve are opened, the first inlet 221 of the second three-way valve is closed, the inlet 231 of the third three-way valve and the second outlet 233 of the third three-way valve are opened, and the first outlet 232 of the third three-way valve is closed, so that the refrigerant in the cooling system 100 circulates among the compressor 110, the condenser 120, the refrigerating evaporator 140 and the refrigerating evaporator 130 in sequence.

In this embodiment, the structure of the third line assembly 170 is defined. The third conduit assembly 170 includes a refrigeration evaporator feed line 171. The third three-way valve 230 has an inlet, a first outlet and a second outlet, both ends of the refrigerating evaporator liquid inlet pipe 171 are connected to the refrigerating evaporator 140 and the second outlet 233 of the third three-way valve, respectively, and the refrigerant in the condenser liquid outlet pipe 162 flows into the refrigerating evaporator 140 through the third three-way valve 230 with the inlet 231 of the third three-way valve and the second outlet 233 of the third three-way valve open and the first outlet 232 of the third three-way valve closed. Also, since the refrigerating evaporator 140 is connected to the freezing evaporator 130 through the first refrigerating evaporator connection pipe 155 and the first freezing evaporator connection pipe 154, with the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve opened and the first inlet 221 of the second three-way valve closed, the refrigerant in the refrigerating evaporator 140 can flow into the freezing evaporator 130, and the freezing evaporator 130 can communicate with the compressor 110 so that the refrigerant can circulate among the compressor 110, the condenser 120, the refrigerating evaporator 140 and the freezing evaporator 130.

In the dual refrigeration mode, by controlling the inlet of the first three-way valve and the second outlet 213 of the first three-way valve to be opened, the first outlet 212 of the first three-way valve is closed, the second inlet 222 of the second three-way valve and the outlet 223 of the second three-way valve to be opened, the first inlet 221 of the second three-way valve to be closed, the inlet 231 of the third three-way valve and the second outlet 233 of the third three-way valve to be opened, and the first outlet 232 of the third three-way valve to be closed, the compressor 110, the condenser 120, the refrigeration evaporator 140 and the refrigeration connector are sequentially connected end to end, so that the refrigerant can circulate among the compressor 110, the condenser 120, the refrigeration evaporator 140 and the refrigeration evaporator 130 in sequence, thereby realizing the refrigeration function of the refrigeration evaporator 140 and the refrigeration evaporator 130 on the refrigeration chamber and the refrigeration chamber.

In some embodiments, optionally, as shown in fig. 1, 2, and 3, the refrigeration system 100 further includes: a first capillary segment 270 disposed in the first freeze evaporator connection tube 154; a second capillary segment 280 disposed in the freeze evaporator feed tube 163; a third capillary segment 290 is provided in the refrigeration evaporator feed line 171.

In this embodiment, the refrigeration system 100 is further defined. The refrigeration system 100 also includes a first capillary segment 270, a second capillary segment 280, and a third capillary segment 290. The first capillary segment 270 is disposed on the first freezing evaporator connecting tube 154, and in the defrosting mode, the refrigerant discharged from the freezing evaporator 130 flows through the first capillary segment 270 disposed on the first freezing evaporator connecting tube 154 and then enters the refrigerating evaporator 140. As can be appreciated, the first capillary segment 270 has a function of cooling and depressurizing the refrigerant, in the defrosting mode, the refrigerant discharged by the compressor 110 is in a high temperature and high pressure state, the refrigerant with high temperature and high pressure enters the freezing evaporator 130 to dissipate heat and cool, the defrosting effect of the freezing evaporator 130 is achieved, the refrigerant with low temperature and high pressure state is called as a refrigerant with medium temperature and high pressure state, the refrigerant flows through the first capillary segment 270, the first capillary segment 270 cools and depressurizes the refrigerant, so that the refrigerant is called as a refrigerant with low temperature and low pressure state, the refrigerant with low temperature and low pressure state flows into the refrigerating evaporator 140 to absorb heat, so that the refrigerating evaporator 140 can cool the refrigerating chamber or maintain the refrigerating chamber in a low temperature state, and the refrigerating function of the refrigerating evaporator 140 is achieved.

Further, a second capillary segment 280 is provided in the freeze evaporator feed tube 163. In the refrigeration mode, after the refrigerant is discharged from the condenser 120, the refrigerant flows through the second capillary segment 280 and enters the refrigeration evaporator 130, and the temperature and the pressure of the refrigerant are reduced in the process of flowing through the second capillary segment 280, so that the refrigerant is in a low-temperature low-pressure state. The refrigerant in the low temperature and low pressure state flows into the freezing evaporator 130 to absorb heat, so that the freezing evaporator 130 can cool the freezing chamber or maintain the freezing chamber in the low temperature state, and the refrigerating function of the freezing evaporator 130 is realized.

Further, a third capillary segment 290 is provided in the refrigeration evaporator feed line 171. In the dual cooling mode, after being discharged from the condenser 120, the refrigerant flows through the third capillary segment 290 and enters the refrigerating evaporator 140, and the temperature and the pressure of the refrigerant are reduced in the process of flowing through the third capillary segment 290, so that the refrigerant is in a low-temperature low-pressure state. The refrigerant in the low temperature and low pressure state flows into the refrigerating evaporator 140 to absorb heat, so that the refrigerating evaporator 140 can cool the refrigerating chamber or maintain the refrigerating chamber in the low temperature state, and the refrigerating function of the refrigerating evaporator 140 is realized.

By providing the first capillary segment 270 on the first freezing evaporator connecting tube 154, providing the second capillary segment 280 on the liquid inlet of the freezing evaporator 130, and providing the third capillary segment 290 on the liquid inlet tube 171 of the refrigerating evaporator, the cooling and depressurization of the refrigerant can be performed through the first capillary segment 270, the second capillary segment 280 and the third capillary segment 290, so that the refrigerant can absorb heat in the freezing evaporator 130 or the refrigerating evaporator 140, and the refrigerating functions of the freezing evaporator 130 and the refrigerating evaporator 140 are realized.

In some embodiments, optionally, as shown in fig. 1, 2, and 3, the refrigeration system 100 further includes: a freezing blower 250 disposed adjacent to the freezing evaporator 130; a refrigerating fan 240 disposed adjacent to the refrigerating evaporator 140; the condenser fan 260 is disposed adjacent to the condenser 120, and in the defrost mode, the freezing fan 250 and the condenser fan 260 are turned off and the refrigerating fan 240 is operated.

In this embodiment, the refrigeration system 100 is further defined. The refrigeration system 100 also includes a refrigeration fan 250, a refrigeration fan 240, and a condenser fan 260. Wherein, the freezing blower 250 is disposed adjacent to the freezing evaporator 130, and the freezing blower 250 can generate an air flow in the vicinity of the freezing evaporator 130 in case of operation of the freezing blower 250, the air flow passes through the freezing evaporator 130 at a certain speed to form forced convection heat exchange, and the cooling capacity of the freezing evaporator 130 can be brought into the freezing chamber to cool the freezing chamber. Further, the refrigerating fan 240 is disposed adjacent to the refrigerating evaporator 140, and in the case that the refrigerating fan 240 is operated, the refrigerating fan 240 can generate an air flow in the vicinity of the refrigerating evaporator 140, and the air flow passes through the refrigerating evaporator 140 at a certain speed to form forced convection heat exchange, so that the cold of the refrigerating evaporator 140 can be brought into the freezing chamber to cool the refrigerating chamber. Further, the condenser fan 260 is disposed adjacent to the condenser 120, and in the case that the condenser fan 260 is operated, the air flow generated by the condenser fan 260 can radiate heat from the condenser 120 to bring heat of the condenser 120 into the external environment of the refrigeration equipment for which the refrigeration system 100 is used.

Further, in the defrost mode, the freezing blower 250 and the condenser blower 260 are turned off, and the refrigerating blower 240 is operated to enhance the defrost effect.

In some embodiments, optionally, as shown in fig. 1, 2, and 3, the refrigeration system 100 further includes: the filters 180 are disposed on the first pipeline assembly 150 and the second pipeline assembly 160, respectively.

In this embodiment, the refrigeration system 100 is further defined. The refrigeration system 100 further includes a plurality of filters 180, wherein the plurality of filters 180 are disposed on the first pipeline assembly 150 and the second pipeline assembly 160, respectively, and specifically, the plurality of filters 180 are disposed on the condenser outlet pipe 162 and the refrigeration evaporator inlet pipe 171, respectively. The filter 180 can filter the refrigerant, so that the impurities in the refrigerant can be prevented from blocking all parts and pipelines in the refrigeration system 100, the reliability of the refrigeration system 100 is improved, and the service life of the refrigeration system 100 is prolonged.

In some embodiments, the refrigeration system 100 optionally further includes a controller electrically connected to the first three-way valve 210, the second three-way valve 220, and the third three-way valve 230, and further electrically connected to the freezing blower 250, the refrigeration blower 240, and the condenser blower 260. The controller is used to control the opening and closing of the respective ports of the first, second and third three-way valves 210, 220 and 230, and to control the operations of the freezing blower 250, the refrigerating blower 240 and the condenser blower 260.

The refrigeration appliance may be a refrigerator.

The third aspect of the present invention further provides a control method of a refrigeration system, which is used in the refrigeration system according to the first aspect of the present invention, as shown in fig. 4, where one of the flow charts of the control method of the refrigeration system according to the embodiment of the present invention is shown. The control method includes the following steps S102 and S106:

s102: receiving a defrosting instruction;

s104: controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator;

s106: the first three-way valve and the second three-way valve are controlled to open the first pipeline assembly, the first three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, the third three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, and the second pipeline assembly is controlled to block the third pipeline assembly, so that a refrigerant in the refrigerating system flows circularly among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

In an embodiment according to the present application, the first pipeline assembly further includes a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe and a compressor air inlet pipe, as shown in fig. 5, which illustrates a second flow chart of a control method of the refrigerating system according to the embodiment of the present invention. The control method includes the following steps S202 and S206:

s202: receiving a defrosting instruction;

s204: controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator;

s206: the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

In this embodiment, a control method of the refrigeration system is further defined. The first pipeline component comprises a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe and a compressor air inlet pipe. Wherein, compressor blast pipe, first three-way valve, freezing evaporimeter intake pipe, first freezing evaporimeter connecting pipe, freezing evaporimeter, second freezing evaporimeter connecting pipe, first refrigeration evaporimeter connecting pipe, refrigeration evaporimeter outlet duct, second three-way valve and compressor intake pipe end to end in proper order. The compressor, the freezing evaporator and the refrigerating evaporator are connected end to end through the first pipeline component by controlling the opening and closing of each port of the first three-way valve and the second three-way valve, so that the refrigerant circularly flows among the compressor, the freezing evaporator and the refrigerating evaporator, and the defrosting effect of the freezing compressor is achieved. The steps of controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to block the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to block the second pipeline assembly from the first pipeline assembly, and blocking the second pipeline assembly from the third pipeline assembly are specifically limited.

In one embodiment according to the present application, the refrigeration system further includes a freezing fan, a refrigerating fan, and a condenser fan, wherein the freezing fan is disposed adjacent to the freezing evaporator, the refrigerating fan is disposed adjacent to the refrigerating evaporator, and the condenser fan is disposed adjacent to the condenser, as shown in fig. 6, which illustrates a third flow diagram of a control method of the refrigeration system according to the embodiment of the present invention. The control method includes the following steps S302 and S308:

s302: receiving a defrosting instruction;

s304: controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator;

s306: controlling the inlet of the first three-way valve and the first outlet of the first three-way valve to be opened, controlling the first inlet and the outlet of the second three-way valve to be opened, and controlling the inlet of the third three-way valve, the first outlet and the second outlet of the third three-way valve to be closed so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated;

s308: and controlling the refrigeration fan and the condenser fan to be turned off, and controlling the refrigeration fan to operate.

In this embodiment, a control method of the refrigeration system is further defined. The refrigeration system also includes a refrigeration fan, and a condenser fan. The refrigerating fan is arranged adjacent to the refrigerating evaporator, and can generate air flow near the refrigerating evaporator under the condition that the refrigerating fan operates, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the refrigerating capacity of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the refrigerating fan is arranged adjacent to the refrigerating evaporator, and under the condition that the refrigerating fan operates, the refrigerating fan can generate air flow near the refrigerating evaporator, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the cold energy of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the condenser fan is arranged adjacent to the condenser, and under the condition that the condenser fan operates, air flow produced by the condenser fan can radiate heat of the condenser so as to bring heat of the condenser into the external environment of refrigeration equipment used by the refrigeration system.

In one embodiment according to the present application, the second pipeline assembly includes a condenser air inlet pipe, a condenser outlet pipe and a freezing evaporator liquid inlet pipe, as shown in fig. 7, which illustrates a fourth flow chart of a control method of the refrigeration system according to the embodiment of the present invention. The control method includes the following steps S402 and S406:

s402: receiving a freezing instruction;

s404: controlling the operation of the compressor, the refrigeration evaporator and the condenser;

s406: the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the first outlet of the third three-way valve are controlled to be opened, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated.

In this embodiment, a control method of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a freezing mode, and in order to enter the freezing mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, and the freezing evaporator. The second pipeline component comprises a condenser air inlet pipe, a condenser liquid outlet pipe and a freezing evaporator liquid inlet pipe, after receiving a freezing instruction and controlling the compressor, the freezing evaporator and the condenser to operate, the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the first outlet of the third three-way valve are controlled to be opened, and the compressor, the compressor air outlet pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser and the freezing evaporator in sequence, and the freezing evaporator can cool or keep the freezing chamber at a low temperature.

In one embodiment according to the present application, the third line assembly includes a refrigeration evaporator feed line, as shown in fig. 8, which illustrates a fifth flow diagram of a control method of a refrigeration system according to an embodiment of the present invention. The control method includes the following steps S502 and S506:

s502: receiving a double-refrigeration instruction;

s504: controlling the operation of the compressor, the refrigeration evaporator and the condenser;

s506: the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is controlled to be closed, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the refrigerating evaporator liquid inlet pipe, the refrigerating evaporator air outlet pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator, the second refrigerating evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated.

In this embodiment, a control method of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a dual refrigeration mode, and in order to enter the dual refrigeration mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, the refrigeration evaporator, and the refrigeration evaporator. The third pipeline component comprises a refrigerating evaporator liquid inlet pipe, after receiving double refrigerating instructions and controlling the operation of the compressor, the refrigerating evaporator, the freezing evaporator and the condenser, the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is controlled to be closed, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the refrigerating evaporator liquid inlet pipe, the refrigerating evaporator air outlet pipe, the first refrigerating evaporator connecting pipe, the freezing evaporator, the second refrigerating evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser, the refrigeration evaporator and the freezing evaporator in sequence, and the refrigeration evaporator and the freezing evaporator can respectively cool or keep low temperature.

As shown in fig. 9, the fourth aspect of the present invention further provides a control apparatus 300 of a refrigeration system, the refrigeration system including a compressor, a refrigeration evaporator, a first pipeline assembly, a second pipeline assembly, a third pipeline assembly, a first three-way valve, a second three-way valve, and a third three-way valve, the control apparatus 300 of the refrigeration system including: a control module 320 for controlling the operation of the compressor, the freezing evaporator and the refrigerating evaporator; an instruction receiving module 310 for receiving a defrosting instruction; the control module 320 is further configured to control the first three-way valve and the second three-way valve to open the first pipeline assembly, control the first three-way valve to block the second pipeline assembly from the first pipeline assembly, and control the third three-way valve to block the second pipeline assembly from the first pipeline assembly, and block the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigeration system flows between the compressor, the refrigeration evaporator and the refrigeration evaporator in sequence.

The control device 300 of the refrigeration system provided by the application can be used in a refrigeration device, which can be a refrigerator. Specifically, the refrigeration apparatus has a refrigerating chamber for refrigerating food materials and a freezing chamber for freezing food materials, the temperature of the refrigerating chamber being higher than that of the freezing chamber. The refrigerating system is used for adjusting the temperature of the refrigerating chamber and the freezing chamber so as to keep the refrigerating chamber and the freezing chamber within a preset temperature range of low temperature. The control device 300 of the refrigeration system is defined as follows.

The refrigeration system includes a compressor, a refrigeration evaporator, a first line assembly, a second line assembly, and a first three-way valve, and the control device 300 of the refrigeration system includes a control module 320 and a command receiving module 310. The instruction receiving module 310 is configured to receive a defrosting instruction, and the control module 320 is configured to control operations of the compressor, the refrigeration evaporator and the refrigeration evaporator. The refrigeration system comprises a first pipeline component for connecting the compressor, the freezing evaporator and the refrigerating evaporator, and the technical effect of defrosting the freezing evaporator can be achieved by enabling a refrigerant to circulate among the compressor, the freezing evaporator and the refrigerating evaporator. Because be equipped with a plurality of pipeline subassemblies in the refrigerating system, in order to realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser, still set up first three-way valve, second three-way valve and third three-way valve in the refrigerating system, can realize the different relation of connection between compressor, freezing evaporimeter, cold storage evaporimeter and the condenser through the switching of each port of control first three-way valve, second three-way valve and third three-way valve. The control module 320 is further configured to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve.

The control module 320 is further configured to control the first three-way valve and the second three-way valve to open the first pipeline assembly, control the first three-way valve to block the second pipeline assembly from the first pipeline assembly, and control the third three-way valve to block the second pipeline assembly from the first pipeline assembly, and block the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigeration system flows between the compressor, the refrigeration evaporator and the refrigeration evaporator in sequence. Specifically, the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly, the second three-way valve is arranged on the first pipeline assembly, and the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly. After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separating the second pipeline assembly from the third pipeline assembly. Therefore, the refrigerant can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence, and the defrosting effect of the freezing evaporator is realized.

In some embodiments, optionally, the first pipeline assembly further includes a compressor exhaust pipe, a second refrigeration evaporator connecting pipe, a refrigeration evaporator air intake pipe, a refrigeration evaporator air outlet pipe, a first refrigeration evaporator connecting pipe, and a compressor air intake pipe, and the control module 320 is specifically configured to: the inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device 300 of the refrigeration system is further defined. The first pipeline assembly further comprises a compressor exhaust pipe, a second freezing evaporator connecting pipe, a freezing evaporator air inlet pipe, a refrigerating evaporator air outlet pipe, a first freezing evaporator connecting pipe, a first refrigerating evaporator connecting pipe and a compressor air inlet pipe. Wherein, compressor blast pipe, first three-way valve, freezing evaporimeter intake pipe, first freezing evaporimeter connecting pipe, freezing evaporimeter, second freezing evaporimeter connecting pipe, first refrigeration evaporimeter connecting pipe, refrigeration evaporimeter outlet duct, second three-way valve and compressor intake pipe end to end in proper order. The compressor, the freezing evaporator and the refrigerating evaporator are connected end to end through the first pipeline component by controlling the opening and closing of each port of the first three-way valve and the second three-way valve, so that the refrigerant circularly flows among the compressor, the freezing evaporator and the refrigerating evaporator, and the defrosting effect of the freezing compressor is achieved. The control module 320 is specifically configured to control the opening of the inlet of the first three-way valve and the first outlet of the first three-way valve, control the opening of the first inlet and the outlet of the second three-way valve, and control the closing of the inlet of the third three-way valve, the first outlet and the second outlet of the third three-way valve, so that the compressor, the compressor exhaust pipe, the freezing evaporator intake pipe, the second freezing evaporator connection pipe, the freezing evaporator, the first freezing evaporator connection pipe, the first refrigerating evaporator connection pipe, the refrigerating evaporator outlet pipe and the compressor intake pipe are sequentially communicated.

In some embodiments, optionally, the refrigeration system further comprises a refrigeration fan disposed adjacent to the refrigeration evaporator, and a condenser fan disposed adjacent to the condenser, the control module 320 further configured to: and controlling the refrigeration fan and the condenser fan to be turned off, and controlling the refrigeration fan to operate.

In this embodiment, the control device 300 of the refrigeration system is further defined. The refrigeration system also includes a refrigeration fan, and a condenser fan. The refrigerating fan is arranged adjacent to the refrigerating evaporator, and can generate air flow near the refrigerating evaporator under the condition that the refrigerating fan operates, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the refrigerating capacity of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the refrigerating fan is arranged adjacent to the refrigerating evaporator, and under the condition that the refrigerating fan operates, the refrigerating fan can generate air flow near the refrigerating evaporator, the air flow passes through the refrigerating evaporator at a certain speed to form forced convection heat exchange, and the cold energy of the refrigerating evaporator can be brought into the refrigerating chamber to refrigerate the refrigerating chamber. Further, the condenser fan is arranged adjacent to the condenser, and under the condition that the condenser fan operates, air flow produced by the condenser fan can radiate heat of the condenser so as to bring heat of the condenser into the external environment of refrigeration equipment used by the refrigeration system.

Further, the control module 320 is also configured to control the cooling fan and the condenser fan to be turned off and to control the operation of the refrigeration fan. After receiving the defrosting instruction and controlling the compressor, the freezing evaporator and the refrigerating evaporator to operate, the defrosting effect on the freezing evaporator can be improved by controlling the freezing fan and the condenser fan to be stopped and controlling the refrigerating fan to operate.

In some embodiments, optionally, the second piping assembly includes a condenser air intake pipe, a condenser outlet pipe, and a freeze evaporator inlet pipe, the instruction receiving module 310 further configured to: receiving a freezing instruction; the control module 320 is further configured to: the method comprises the steps of controlling a compressor, a freezing evaporator and a condenser to operate, controlling an inlet of a first three-way valve and a second outlet of the first three-way valve to open, controlling a first outlet of the first three-way valve to close, controlling a second inlet of a second three-way valve and an outlet of the second three-way valve to open, controlling a first inlet of the second three-way valve to close, and controlling an inlet of a third three-way valve and a first outlet of the third three-way valve to open so that the compressor, a compressor exhaust pipe, a condenser air inlet pipe, a condenser liquid outlet pipe, a freezing evaporator liquid inlet pipe, a first freezing evaporator connecting pipe, a freezing evaporator, a second freezing evaporator connecting pipe and a compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device 300 of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a freezing mode, and in order to enter the freezing mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, and the freezing evaporator. The second pipeline assembly comprises a condenser air inlet pipe, a condenser liquid outlet pipe and a freezing evaporator liquid inlet pipe, the instruction receiving module 310 is further used for receiving freezing instructions, the control module 320 is further used for controlling the opening of an inlet of the first three-way valve and a second outlet of the first three-way valve, controlling the closing of a first outlet of the first three-way valve, controlling the opening of a second inlet of the second three-way valve and an outlet of the second three-way valve, controlling the closing of a first inlet of the second three-way valve, controlling the opening of an inlet of the third three-way valve and a first outlet of the third three-way valve, so that the compressor, the compressor air outlet pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser and the freezing evaporator in sequence, and the freezing evaporator can cool or keep the freezing chamber at a low temperature.

In some embodiments, optionally, the third conduit assembly includes a refrigeration evaporator feed line, and the instruction receiving module 310 is further configured to: receiving a double-refrigeration instruction; the control module 320 is further configured to: the method comprises the steps of controlling a compressor, a refrigeration evaporator, a freezing evaporator and a condenser to operate, controlling an inlet of a first three-way valve and a second outlet of the first three-way valve to open, controlling a first outlet of the first three-way valve to close, controlling a second inlet of a second three-way valve and an outlet of the second three-way valve to open, controlling a first inlet of the second three-way valve to close, controlling an inlet of a third three-way valve and a second outlet of the third three-way valve to open, and controlling a first outlet of the third three-way valve to close so that the compressor, a compressor exhaust pipe, a condenser air inlet pipe, the condenser, a condenser liquid outlet pipe, a refrigeration evaporator liquid inlet pipe, a refrigeration evaporator air outlet pipe, a first refrigeration evaporator connecting pipe, a refrigeration evaporator, a second refrigeration evaporator connecting pipe and a compressor air inlet pipe are sequentially communicated.

In this embodiment, the control device 300 of the refrigeration system is further defined. The refrigeration apparatus used in the refrigeration system further has a dual refrigeration mode, and in order to enter the dual refrigeration mode, it is necessary to control opening and closing of each port of the first three-way valve, the second three-way valve, and the third three-way valve so as to communicate the compressor, the condenser, the freezing evaporator, and the refrigerating evaporator. The third pipeline assembly comprises a refrigerating evaporator liquid inlet pipe, the instruction receiving module 310 is further used for receiving a double-refrigerating instruction, the control module 320 is further used for controlling the operation of a compressor, a refrigerating evaporator, a freezing evaporator and a condenser, controlling the opening of an inlet of a first three-way valve and a second outlet of the first three-way valve, controlling the closing of the first outlet of the first three-way valve, controlling the opening of a second inlet of a second three-way valve and an outlet of the second three-way valve, controlling the closing of the first inlet of the second three-way valve, controlling the opening of the inlet of the third three-way valve and the opening of the second outlet of the third three-way valve, and controlling the closing of the first outlet of the third three-way valve so as to enable the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe of the refrigerating evaporator, the refrigerating evaporator air outlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe to be sequentially communicated. Therefore, the refrigerant can circulate among the compressor, the condenser, the refrigeration evaporator and the freezing evaporator in sequence, and the refrigeration evaporator and the freezing evaporator can respectively cool or keep the temperature of the refrigeration chamber and the freezing chamber.

In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A refrigeration system for a refrigeration appliance having a refrigeration compartment and a freezer compartment, the refrigeration system comprising:

a compressor;

a condenser;

the freezing evaporator is used for cooling the freezing chamber;

A refrigerating evaporator for cooling the refrigerating chamber;

a first pipeline assembly for communicating the compressor, the refrigeration evaporator and the refrigeration evaporator;

a second piping component for connecting the condenser to the first piping component;

a third conduit assembly for connecting the refrigeration evaporator to the second conduit assembly;

the first three-way valve is connected with the first pipeline assembly and the second pipeline assembly;

the second three-way valve is arranged on the first pipeline component;

the third three-way valve is arranged on the second pipeline assembly and is connected with the third pipeline assembly;

under defrosting mode, the first three-way valve and the second three-way valve open the first pipeline assembly, the first three-way valve blocks the second pipeline assembly from the first pipeline assembly, and the third three-way valve blocks the second pipeline assembly from the first pipeline assembly and blocks the second pipeline assembly from the third pipeline assembly, so that refrigerant in the refrigerating system can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

2. The refrigeration system of claim 1 wherein said first circuit assembly comprises:

The two ends of the compressor exhaust pipe are respectively connected with the inlets of the compressor and the first three-way valve;

a second freeze evaporator connecting tube connected to the freeze evaporator;

the two ends of the freezing evaporator air inlet pipe are respectively connected with the first outlet of the first three-way valve and the second freezing evaporator connecting pipe;

the first freezing evaporator connecting pipe is connected with the freezing evaporator;

the two ends of the first refrigeration evaporator connecting pipe are respectively connected with the first refrigeration evaporator connecting pipe and the refrigeration evaporator;

the two ends of the air outlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the first inlet of the second three-way valve;

the two ends of the compressor air inlet pipe are respectively connected with the outlet of the second three-way valve and the compressor; in the defrosting mode, the inlet of the first three-way valve and the first outlet of the first three-way valve are opened, and the first inlet and the outlet of the second three-way valve are opened.

3. The refrigeration system of claim 2 wherein said second circuit assembly comprises:

the two ends of the condenser air inlet pipe are respectively connected with the second outlet of the first three-way valve and the condenser;

The two ends of the condenser liquid outlet pipe are respectively connected with the inlets of the condenser and the third three-way valve;

one end of the freezing evaporator liquid inlet pipe is connected with the first freezing evaporator connecting pipe and the first refrigerating evaporator connecting pipe, and the other end of the freezing evaporator liquid inlet pipe is connected with a first outlet of the third three-way valve;

one end of the second freezing evaporator connecting pipe is connected to a second inlet of the second three-way valve, in a freezing mode, an inlet of the first three-way valve and a second outlet of the first three-way valve are opened, a first outlet of the first three-way valve is closed, a second inlet of the second three-way valve and an outlet of the second three-way valve are opened, a first inlet of the second three-way valve is closed, and an inlet of the third three-way valve and a first outlet of the third three-way valve are opened, so that refrigerant in the refrigerating system circulates among the compressor, the condenser and the freezing evaporator in sequence.

4. A refrigeration system as recited in claim 3 wherein said third conduit assembly includes:

the two ends of the liquid inlet pipe of the refrigeration evaporator are respectively connected with the refrigeration evaporator and the second outlet of the third three-way valve; under the dual refrigeration mode, the inlet of the first three-way valve and the second outlet of the first three-way valve are opened, the first outlet of the first three-way valve is closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are opened, the first inlet of the second three-way valve is closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are opened, and the first outlet of the third three-way valve is closed, so that a refrigerant in the refrigeration system circulates among the compressor, the condenser, the refrigeration evaporator and the refrigeration evaporator in sequence.

5. The refrigeration system of claim 4, further comprising:

the first capillary section is arranged on the first freezing evaporator connecting pipe;

the second capillary section is arranged on the liquid inlet pipe of the freezing evaporator;

and the third capillary section is arranged on the liquid inlet pipe of the refrigeration evaporator.

6. The refrigeration system as recited in any one of claims 1 to 5 further comprising:

the refrigerating fan is arranged adjacent to the refrigerating evaporator;

and the condenser fan is arranged adjacent to the condenser, and in the defrosting mode, the freezing fan and the condenser fan are stopped, and the refrigerating fan operates.

7. The refrigeration system as recited in any one of claims 1 to 5 further comprising:

the filters are respectively arranged on the first pipeline assembly and the second pipeline assembly.

8. A refrigeration appliance, comprising:

a refrigeration system as claimed in any one of claims 1 to 7.

9. A control method of a refrigeration system according to any one of claims 1 to 7, characterized by comprising:

Receiving a defrosting instruction;

controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator;

the first three-way valve and the second three-way valve are controlled to open the first pipeline assembly, the first three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, the third three-way valve is controlled to block the second pipeline assembly from the first pipeline assembly, and the second pipeline assembly from the third pipeline assembly, so that refrigerant in the refrigerating system can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

10. The method of claim 9, wherein the first piping component further comprises a compressor discharge pipe, a second refrigeration evaporator connection pipe, a refrigeration evaporator intake pipe, a refrigeration evaporator outlet pipe, a first refrigeration evaporator connection pipe, and a compressor intake pipe, wherein the controlling the first three-way valve and the second three-way valve to open the first piping component, the controlling the first three-way valve to block the second piping component from the first piping component, and the controlling the third three-way valve to block the second piping component from the first piping component, and the blocking the second piping component from the third piping component, comprises:

The inlet of the first three-way valve and the first outlet of the first three-way valve are controlled to be opened, the first inlet and the outlet of the second three-way valve are controlled to be opened, and the inlet of the third three-way valve, the first outlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be closed, so that the compressor, the compressor exhaust pipe, the freezing evaporator air inlet pipe, the second freezing evaporator connecting pipe, the freezing evaporator, the first freezing evaporator connecting pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator air outlet pipe and the compressor air inlet pipe are sequentially communicated.

11. The method of controlling a refrigeration system as recited in claim 9 further comprising a freezing fan, a refrigerating fan, and a condenser fan, the freezing fan being disposed adjacent to the freezing evaporator, the refrigerating fan being disposed adjacent to the refrigerating evaporator, the condenser fan being disposed adjacent to the condenser, the method of controlling a refrigeration system further comprising:

and controlling the refrigerating fan and the condenser fan to be turned off, and controlling the refrigerating fan to operate.

12. The method of controlling a refrigeration system of claim 10, wherein the second piping assembly includes a condenser air intake pipe, a condenser outlet pipe, and a freeze evaporator inlet pipe, the method further comprising:

receiving a freezing instruction;

controlling the operation of the compressor, the refrigeration evaporator and the condenser;

the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, and the inlet of the third three-way valve and the first outlet of the third three-way valve are controlled to be opened, so that the compressor, the compressor exhaust pipe, the condenser air inlet pipe, the condenser liquid outlet pipe, the freezing evaporator liquid inlet pipe, the first freezing evaporator connecting pipe, the freezing evaporator, the second freezing evaporator connecting pipe and the compressor air inlet pipe are sequentially communicated.

13. The method of controlling a refrigeration system of claim 12, wherein the third circuit assembly includes a refrigeration evaporator feed line, the method further comprising:

Receiving a double-refrigeration instruction;

the inlet of the first three-way valve and the second outlet of the first three-way valve are controlled to be opened, the first outlet of the first three-way valve is controlled to be closed, the second inlet of the second three-way valve and the outlet of the second three-way valve are controlled to be opened, the first inlet of the second three-way valve is controlled to be closed, the inlet of the third three-way valve and the second outlet of the third three-way valve are controlled to be opened, and the first outlet of the third three-way valve is controlled to be closed, so that the compressor, the compressor exhaust pipe, the condenser intake pipe, the condenser outlet pipe, the refrigerating evaporator intake pipe, the refrigerating evaporator outlet pipe, the first refrigerating evaporator connecting pipe, the refrigerating evaporator, the second refrigerating evaporator connecting pipe and the compressor intake pipe are sequentially communicated.

14. A control device of a refrigeration system, the refrigeration system including a compressor, a refrigeration evaporator, a first line assembly, a second line assembly, a third line assembly, a first three-way valve, a second three-way valve, and a third three-way valve, the control device of the refrigeration system comprising:

The control module is used for controlling the operation of the compressor, the refrigeration evaporator and the refrigeration evaporator;

the instruction receiving module is used for receiving a defrosting instruction;

the control module is further used for controlling the first three-way valve and the second three-way valve to open the first pipeline assembly, controlling the first three-way valve to separate the second pipeline assembly from the first pipeline assembly, controlling the third three-way valve to separate the second pipeline assembly from the first pipeline assembly and separate the second pipeline assembly from the third pipeline assembly, so that a refrigerant in the refrigerating system can circulate among the compressor, the freezing evaporator and the refrigerating evaporator in sequence.

15. A refrigeration appliance, comprising:

the control apparatus of the refrigeration system of claim 14.

16. A readable storage medium, characterized in that,

the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the control method of a refrigeration system according to any of claims 9 to 13.