CN111397007B

CN111397007B - Central air-conditioning system and control method thereof

Info

Publication number: CN111397007B
Application number: CN202010246164.8A
Authority: CN
Inventors: 刘博�; 陈大江
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-06-18
Anticipated expiration: 2040-03-31
Also published as: CN111397007A

Abstract

The application discloses central air conditioning system and control method of central air conditioning system, this central air conditioning system includes: the compressor, the cross valve, outdoor heat exchange unit, first throttling gear, first vapour and liquid separator, first indoor air conditioning unit, reposition of redundant personnel regulating unit and second indoor air conditioning unit, make this central air conditioning system can provide different heat transfer volume for different spaces or rooms through control refrigerant throttle number of times, make the heat transfer volume that central air conditioning system provided can with actual environment demand phase-match, solved that heat transfer volume is single among the prior art, intelligent degree is low, user's travelling comfort is extremely low technical problem. Furthermore, the central air-conditioning system can adjust the heat exchange amount more accurately according to different environmental requirements by adjusting the opening of the corresponding throttling device, so that the purposes of saving energy consumption and improving the control effect can be achieved while the heat exchange capacity of the central air-conditioning system is ensured.

Description

Central air-conditioning system and control method thereof

Technical Field

The application relates to the technical field of household appliances, in particular to a central air-conditioning system and a control method of the central air-conditioning system.

Background

In recent years, a central air conditioning system has become a trend, the occupied area of an external unit is small, and an air outlet of the internal unit can be embedded into any place such as a wall body, a cabinet body and the like, so that the appearance is attractive, the space is saved, and the central air conditioning system becomes a first choice for large-dwelling houses and commercial buildings such as high-grade districts, villas and the like gradually.

In the prior art, a central air conditioning system is generally controlled to perform operations such as throttling and separating on a refrigerant, and then the refrigerant is controlled to enter different evaporators for heat exchange, so that the purpose of refrigerating or heating a plurality of different rooms by one outdoor unit is achieved.

However, the applicant has found that the above-mentioned techniques have at least the following technical problems:

because the demands for heat exchange quantity in different rooms are different, when the central air conditioning system is controlled to perform heat exchange work according to a related method in the prior art, only single heat exchange quantity can be provided, the situation that the heat exchange quantity is not matched with the actual environment demand exists in part of the rooms is inevitably caused, and the comfort of users is seriously influenced.

Disclosure of Invention

The present application is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, a first objective of the present application is to provide a central air conditioning system for solving the technical problems existing in the prior art that the heat exchange amount is single, the heat exchange amount is not matched with the actual environmental requirement, the power consumption is high, the intelligent degree is low, and the user comfort is extremely low.

In order to achieve the above object, an embodiment of a first aspect of the present application provides a central air conditioning system, including: the central air-conditioning system comprises a compressor, a four-way valve, an outdoor heat exchange unit and a first throttling device, wherein the outlet of the compressor is connected with the first end of the four-way valve, the first end of the outdoor heat exchange unit is connected with the second end of the four-way valve, the second end of the outdoor heat exchange unit is connected with the first end of the first throttling device, the inlet of the compressor is connected with the third end of the four-way valve, and the central air-conditioning system further comprises: the gas-liquid port of the first gas-liquid separator is connected with the second end of the first throttling device; a first indoor air conditioning unit, a first end of which is connected to the gas port of the first gas-liquid separator, and a second end of which is connected to a fourth end of the four-way valve; the split-flow adjusting unit is respectively connected with the liquid port of the first gas-liquid separator and the fourth end of the four-way valve; and the first end of the second indoor air conditioning unit is connected with the shunt conditioning unit, and the second end of the second indoor air conditioning unit is connected with the fourth end of the four-way valve.

In addition, the central air conditioning system according to the above embodiment of the present application may further have the following additional technical features:

according to an embodiment of the application, the shunt regulation unit comprises at least one shunt regulation subunit.

According to an embodiment of the application, the shunt regulation unit comprises a shunt regulation subunit, the shunt regulation subunit comprising: a second throttling device; a gas-liquid port of the second gas-liquid separator is connected with a first end of the second throttling device; a third indoor air conditioning unit, wherein a first end of the third indoor air conditioning unit is connected with the gas port of the second gas-liquid separator, and a second end of the third indoor air conditioning unit is connected with a fourth end of the four-way valve; wherein a first end of the second indoor air conditioning unit is connected with the liquid port of the second gas-liquid separator, and a second end of the second indoor air conditioning unit is connected with a fourth end of the four-way valve; the second end of the second throttling device is connected with the liquid port of the first gas-liquid separator.

According to an embodiment of the application, the shunting regulation unit includes at least two shunting regulation subunits that cascade in proper order, the shunting regulation subunit includes: a third throttling means; a gas-liquid port of the third gas-liquid separator is connected with the first end of the third throttling device; a first end of a fourth indoor air conditioning unit is connected with the gas port of the third gas-liquid separator, and a second end of the fourth indoor air conditioning unit is connected with a fourth end of the four-way valve; a first end of the second indoor air conditioning unit is connected with a liquid port of the third gas-liquid separator in the last stage of the split-flow adjusting subunit, and a second end of the second indoor air conditioning unit is connected with a fourth end of the four-way valve; and the second end of the third throttling device is connected with the liquid port of the first gas-liquid separator or the liquid port of the third gas-liquid separator in the upper-stage flow splitting regulation subunit.

According to an embodiment of the present application, the third indoor air conditioning unit or the fourth indoor air conditioning unit of the first indoor air conditioning unit, the second indoor air conditioning unit, and the split flow conditioning unit are respectively provided in different spaces or rooms.

According to an embodiment of the present application, the third indoor air conditioning unit or the fourth indoor air conditioning unit among the first indoor air conditioning unit, the second indoor air conditioning unit, and the split flow conditioning unit is an indoor heat exchanging unit.

In order to achieve the above object, an embodiment of a second aspect of the present application provides a control method of a central air conditioning system, which is applied to a central air conditioner provided in an embodiment of the first aspect of the present application, the control method including: receiving a first control instruction; and controlling a four-way valve to connect the first end and the second end of the four-way valve and the third end and the fourth end of the four-way valve according to the first control instruction, or connecting the first end and the fourth end of the four-way valve and the second end and the third end of the four-way valve.

In addition, the control method of the air conditioner according to the above-described embodiment of the present application may further have the following additional technical features:

according to an embodiment of the present application, further comprising: receiving a second control instruction; and controlling the opening degree of the second throttling device or the third throttling device according to the second control instruction.

In order to achieve the above object, an embodiment of a third aspect of the present application provides an electronic device, which includes a memory, a processor, and a program stored in the memory and executable on the processor, and when the processor executes the program, the electronic device implements the control method of the central air conditioning system.

In order to achieve the above object, a fourth aspect of the present application provides a computer-readable storage medium, having a computer program stored thereon, wherein the computer program is configured to, when executed by a processor, implement any one of the above-mentioned methods for controlling a central air conditioning system.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. because this application can be according to the different heat transfer modes of the central air conditioning system of user's selection, the connection between the corresponding port of control cross valve switch-on, and then make this application can be through having add reposition of redundant personnel regulating unit, make this central air conditioning system can be through controlling refrigerant throttle number of times, provide different heat transfer volume for different spaces or rooms, the heat transfer volume that makes central air conditioning system provide can with actual environment demand phase-match, the heat transfer volume singleness among the prior art has been solved, intelligent degree is low, user's travelling comfort is extremely low technical problem.

2. Because the split-flow adjusting unit comprising the split-flow adjusting subunit is additionally arranged in the central air-conditioning system, part of the refrigerant of the central air-conditioning system is only throttled once, and the other part of the refrigerant is throttled twice, so that different heat exchange amounts are provided, and the heat exchange amounts in different spaces or rooms can be matched with actual environment requirements.

3. Because this application can be when current heat transfer volume unsatisfied demand, the user can give an instruction, and the corresponding throttling arrangement's of control regulation aperture, and then makes this central air conditioning system through the aperture of adjusting second throttling arrangement, can also be to different environmental demands, and the heat transfer volume is adjusted to developments and accuracy, when satisfying user's diversified demand, further improved user's travelling comfort, can also reach the purpose that saves the energy consumption, promote intelligent degree and control effect.

4. Because the reposition of redundant personnel regulating unit including two at least reposition of redundant personnel regulating subunit has been add in this application, make this central air conditioning system's part refrigerant only through once throttle, another part refrigerant is through twice throttle to provide different heat transfer volume, and then for more spaces or room provide with actual environmental demand assorted heat transfer volume, greatly improved this central air conditioning system's adaptability. Alternatively, the shunt regulator units may be duplicated a plurality of times according to the setting of the actual space or room, so that the number of shunt regulator units matches the requirement of the space or room.

5. Because can be through adjusting the aperture of shunting adjusting element middle third throttling arrangement in this application, to different environmental demands, the dynamic and accurate adjustment heat transfer volume when further having improved user's travelling comfort, can also reach the purpose that energy saving consumed, promoted intelligent degree and control effect.

Drawings

Fig. 1 is a schematic structural diagram illustrating a control method of a central air conditioning system according to an embodiment of the present application;

fig. 2 is a schematic view illustrating a flow direction of a refrigerant when the central air-conditioning system disclosed in one embodiment of the present application is operating in a cooling mode;

fig. 3 is a schematic view illustrating a refrigerant flow direction when the central air-conditioning system disclosed in one embodiment of the present application is operating in a heating mode;

fig. 4 is a schematic structural diagram illustrating another method for controlling a central air conditioning system according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram illustrating another method for controlling a central air conditioning system according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram illustrating another method for controlling a central air conditioning system according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram illustrating another method for controlling a central air conditioning system according to an embodiment of the present disclosure;

FIG. 8 is a flow chart illustrating a method for controlling a central air conditioning system according to an embodiment of the present disclosure;

FIG. 9 is a flow chart illustrating another method for controlling a central air conditioning system according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

A central air conditioning system and a control method of the central air conditioning system according to embodiments of the present application are described below with reference to the accompanying drawings.

Fig. 1 to 7 are schematic structural views of a central air conditioning system according to an embodiment of the present application.

As shown in fig. 1, in the present application, the central air conditioning system 1000 includes: a compressor 101, a four-way valve 110, an outdoor heat exchange unit 102, and a first throttling device 103.

The central air conditioning system 1000 further includes: a first gas-liquid separator 104, a first indoor air conditioning unit 105, a split flow conditioning unit 150, and a second indoor air conditioning unit 109.

The compressor 101 compresses a low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, and drives the refrigerant in the heat exchange circuit. Wherein, the outlet of compressor 101 is connected to the first end of four-way valve 110, and the inlet of compressor 101 is connected to the third end of four-way valve 110. Therefore, the high-temperature and high-pressure refrigerant flows out of the outlet of the compressor 101 and flows to the first end of the four-way valve 110; the heat-exchanged refrigerant flows back to the inlet of the compressor 101 through the third end of the four-way valve 110.

The four-way valve 110 is used for conveying a refrigerant and changing the flow direction of the refrigerant in the system. Wherein, four way valve 110 includes: four ports in total from the first end to the fourth end. A first end of four-way valve 110 is connected to an outlet of the compressor; the second end is connected with the first end of the outdoor heat exchange unit 102; the third end is connected with the inlet of the compressor 101; the fourth terminal is connected to the second terminal of the first indoor air-conditioning unit 105.

It should be noted that, for different heat exchange operation modes of the central air-conditioning system 1000 selected by the user, the connection modes of the four ports of the four-way valve 110 are also different, and further, by changing the flow direction of the refrigerant, the cooling and heating functions of the central air-conditioning system 1000 are realized. Wherein, when the central air-conditioning system 1000 performs refrigeration, the four-way valve 110 controls the refrigerant to flow into the outdoor heat exchange unit 102; when the central air-conditioning system 1000 performs heating, the four-way valve 110 controls the refrigerant to flow to the first indoor air-conditioning unit 105, the split flow-adjusting unit 120, and the second indoor air-conditioning unit.

Alternatively, for the cooling mode, the first terminal and the second terminal of four-way valve 110 may be controlled to be connected, and the third terminal and the fourth terminal may be controlled to be connected. Accordingly, the high-temperature and high-pressure refrigerant flows from the outlet of the compressor 101 into the first end of the four-way valve 110, then flows from the second end of the four-way valve 110 to the outdoor heat exchange unit 102, and the heat-exchanged refrigerant flows into the fourth end of the four-way valve 110, and then flows back to the inlet of the compressor 101 from the third four end of the four-way valve 110.

Alternatively, for the heating mode, the first terminal and the fourth terminal of four-way valve 110 may be controlled to be connected, and the second terminal and the third terminal may be controlled to be connected. Accordingly, a high-temperature and high-pressure refrigerant flow flows from the outlet of the compressor 101 into the first end of the four-way valve 110, then flows from the third end of the four-way valve 110 into the first indoor air conditioning unit 105, the split flow adjusting unit 120, and the second indoor air conditioning unit 109, and the heat-exchanged refrigerant flows into the second end of the four-way valve 110, and then flows back from the third end of the four-way valve 110 to the inlet of the compressor 101.

And an outdoor heat exchange unit 102 for exchanging heat with outdoor air. Wherein, the first end of the outdoor heat exchange unit 102 is connected to the second end of the four-way valve 110, and the second end of the outdoor heat exchange unit 102 is connected to the first end of the first throttling device 103.

Alternatively, in the cooling mode, the high-temperature and high-pressure refrigerant flows into the first end of the outdoor heat exchange unit 102 from the second end of the four-way valve 110, and the outdoor heat exchange unit 102 releases heat to the outside, so that the temperature of the refrigerant is reduced. Further, the cooled refrigerant flows from the second end of the outdoor heat exchange unit 102 into the first end of the first throttling device 103. The refrigerant flows into the outdoor heat exchange unit 102 to be cooled and becomes a liquid refrigerant.

Optionally, in the heating mode, the low-temperature and low-pressure refrigerant after heat exchange flows from the first end of the first throttling device 103 into the second end of the outdoor heat exchange unit 102, and the outdoor heat exchange unit 102 absorbs heat from the outside to increase the temperature of the refrigerant. Further, the refrigerant having the increased temperature flows from the first end of the outdoor heat exchange unit 102 into the second end of the four-way valve 110, and further flows back to the inlet of the compressor 101 from the third end of the four-way valve 110. The liquid refrigerant absorbs heat in the outdoor heat exchange unit 102 and then becomes a gas refrigerant.

The first throttling device 103 is used for reducing the pressure of the refrigerant and controlling the flow rate of the refrigerant. Wherein, a first end of the first throttling device 103 is connected with a second end of the outdoor heat exchange unit 102, and a second end of the first throttling device 103 is connected with a gas-liquid port of the first gas-liquid separator 104.

Alternatively, for the cooling mode, the first throttling device 103 reduces the pressure of the medium-temperature and high-pressure refrigerant flowing from the second end of the outdoor heat exchange unit 102, and flows from the second end of the first throttling device 103 into the gas-liquid port of the first gas-liquid separator 104. The liquid refrigerant flows into the first throttling device 103 and is throttled, and becomes a gas-liquid mixed refrigerant.

Alternatively, for the heating mode, the first throttling device 103 increases the pressure of the refrigerant flowing in from the first gas-liquid separator 104, and the refrigerant flows into the outdoor heat exchange unit 102 from the first end of the first throttling device 103. The separated liquid refrigerant flows into the first throttling device 103 and is throttled, and becomes a gas-liquid mixed refrigerant.

The first gas-liquid separator 104 is used for separating the gas-liquid mixed refrigerant. Wherein, the gas-liquid port of the first gas-liquid separator 104 is connected with the second end of the first throttling device 103, the gas port of the first gas-liquid separator 104 is connected with the first section of the first indoor air conditioning unit 105, and the liquid port of the first gas-liquid separator 104 is connected with the split flow adjusting unit 150.

A first indoor air conditioning unit 105 for exchanging heat with indoor air. A first end of the first indoor air conditioning unit 105 is connected to the gas port of the first gas-liquid separator 104, and a second end of the first indoor air conditioning unit 105 is connected to a fourth end of the four-way valve 110.

Optionally, in the cooling mode, the separated gas refrigerant flows into the first end of the first indoor air conditioning unit 105, and the refrigerant in the first indoor air conditioning unit 105 exchanges heat with indoor air, so that the indoor temperature is decreased and the refrigerant temperature is increased. Further, the refrigerant having the increased temperature flows from the second end of the first indoor air conditioning unit 105 into the fourth end of the four-way valve 110, and further flows from the third end of the four-way valve 110 back to the inlet of the compressor 101.

Alternatively, in the heating mode, a high-temperature and high-pressure gas refrigerant flows from the fourth end of the four-way valve 110 into the second end of the first indoor air conditioning unit 105, and the refrigerant in the first indoor air conditioning unit 105 exchanges heat with indoor air, so that the indoor temperature increases and the refrigerant temperature decreases. Further, the refrigerant having been cooled down flows into the gas port of the first gas-liquid separator 104 from the first end of the first indoor air conditioning unit 105.

And the split-flow adjusting unit 150 is used for further throttling, separating and heat exchanging the separated liquid refrigerant. Wherein the split flow adjusting unit 150 is connected to the liquid port of the first gas-liquid separator 104 and the fourth end of the four-way valve 110, respectively.

It should be noted that, in practical applications, the central air conditioning system 1000 is usually provided with a throttling device in front of a plurality of indoor air conditioning devices, so that the plurality of indoor air conditioning devices exchange heat to provide cooling capacity or heating capacity for different spaces or rooms, which will inevitably result in a single heat exchange capacity of the central air conditioning system. Therefore, in the present application, by additionally providing the split-flow adjusting unit 150 including at least one split-flow adjusting subunit 150-n, the refrigerant is further throttled, separated and heat exchanged, so that the heat exchange amount provided by the central air conditioning system 1000 can be matched with the actual environmental requirements.

The shunt regulation unit 150 includes at least one shunt regulation subunit 150-n. Wherein 150-n is the nth shunt regulator subunit; the specific number of the arranged shunting regulating subunits can be set according to the actual situation. For example, the shunt regulation unit 150 may be configured to include a shunt regulation subunit, i.e., the shunt regulation subunit 150-1; for another example, the shunt regulation unit 150 may be configured to include two shunt regulation subunits, i.e., the shunt regulation subunit 150-1 and the shunt regulation subunit 150-2.

And a second indoor air conditioning unit 109 for exchanging heat with the indoor air. A first end of the second indoor air-conditioning unit 109 is connected to the split flow adjusting unit 150, and a second end of the second indoor air-conditioning unit 109 is connected to a fourth end of the four-way valve 110. Wherein the second indoor air conditioning unit 109 and the first indoor air conditioning unit 105 are respectively provided in different spaces or rooms.

Optionally, for the cooling mode, the separated liquid refrigerant flows from the split flow adjusting unit 150 into the first end of the second indoor air conditioning unit 109, and the refrigerant in the second indoor air conditioning unit 109 exchanges heat with the indoor air, so that the indoor temperature is decreased, and the refrigerant temperature is increased. Further, the refrigerant having the increased temperature flows from the second end of the second indoor air conditioning unit 109 to the fourth end of the four-way valve 110.

Alternatively, in the heating mode, a high-temperature and high-pressure gas refrigerant flows from the fourth end of the four-way valve 110 into the second end of the second indoor air-conditioning unit 109, and the refrigerant in the second indoor air-conditioning unit 109 exchanges heat with indoor air, so that the indoor temperature increases and the refrigerant temperature decreases. Further, the cooled refrigerant flows into the split flow adjusting unit 150 from the first end of the second indoor air conditioning unit 109.

To sum up, in this application, when central air conditioning system 1000 refrigerates, first control four-way valve 110's first end and second end are connected, and third end and fourth end are connected, then control compressor 101 carries the high temperature high pressure refrigerant that obtains after will compressing to four-way valve 110's first end to flow to outdoor heat exchange unit 102 by four-way valve 110's second end and carry out the heat transfer, the heat dissipation makes the refrigerant temperature reduce. Further, the outdoor heat exchange unit 102 conveys the cooled refrigerant to the first throttling device 103, and the first throttling device 103 conveys the gas-liquid mixed refrigerant subjected to throttling and pressure reduction to the first gas-liquid separator 104. The first gas-liquid separator 104 separates and delivers the gas refrigerant to the first room air conditioning unit 105, and delivers the liquid refrigerant to the division flow adjusting unit 150. At this time, the first indoor air conditioning unit 105 exchanges heat with indoor air, reduces the indoor temperature, increases the temperature of the refrigerant, and controls the refrigerant after heat exchange and temperature increase to flow into the fourth end of the four-way valve 110; the split flow adjusting unit 150 transmits a part of the split refrigerant to the second indoor air adjusting unit for heat exchange, so that the indoor temperature is reduced, the temperature of the refrigerant is increased, and the refrigerant heated by heat exchange flows into the fourth end of the four-way valve 110; the other part of the refrigerant is throttled, separated and heat-exchanged, the indoor temperature is reduced, the temperature of the refrigerant is increased, and the refrigerant with the heated temperature flows into the fourth end of the four-way valve 110. At this time, the three mixed refrigerants flow from the fourth end of the four-way valve 110, through the third end of the four-way valve 110, and back to the inlet of the compressor 101, thereby implementing one refrigeration cycle. The flow of the refrigerant is shown in fig. 2.

When the central air conditioning system 1000 performs heating, as shown in fig. 3, the first end and the fourth end of the four-way valve 110 are first controlled to be connected, and the second end and the third end are connected, and then the compressor 101 is controlled to deliver the high-temperature and high-pressure refrigerant obtained by compression to the first end of the four-way valve 110, and the refrigerant flows from the fourth end of the four-way valve 110 to the first indoor air conditioning unit 105, the split flow conditioning unit 150, and the second indoor air conditioning unit 109. At this time, the indoor air conditioning units and the second indoor air conditioning unit 109 in the first indoor air conditioning unit 105 and the split flow conditioning unit 150 exchange heat, respectively, and the indoor temperature increases and the refrigerant temperature decreases. Further, the cooled refrigerant flows through the first throttling device 103 and the first gas-liquid separator 104, and flows into the outdoor heat exchange unit 102. The outdoor heat exchange unit 102 exchanges heat, absorbs heat to raise the temperature of the refrigerant, and conveys the heated refrigerant to the second end of the four-way valve 110, and then flows back to the inlet of the compressor 101 through the third end of the four-way valve 110, thereby realizing a heating cycle. The flow of the refrigerant is shown in fig. 3.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

because this application can be according to central air conditioning system's different heat transfer modes, the connection between the corresponding port of control cross valve switch-on, and then make this application can be through having add reposition of redundant personnel regulating unit, make this central air conditioning system can be through control refrigerant throttle number of times, for different spaces or room provide different heat transfer volume, the heat transfer volume that makes central air conditioning system provide can with actual environment demand phase-match, the heat transfer volume singleness among the prior art has been solved, intelligent degree is low, user's travelling comfort is extremely low technical problem.

In some embodiments, as shown in FIG. 4, the split flow regulating unit 150 includes a split flow regulating subunit 150-1. Wherein, this reposition of redundant personnel regulation subunit 150-1 includes: a second throttling device 106, a second gas-liquid separator 107 and a third indoor air conditioning unit 108.

The second throttling device 106 is used for reducing the pressure of the refrigerant and controlling the flow rate of the refrigerant. A first end of the second throttling device 106 is connected to a gas-liquid port of the second gas-liquid separator 107, and a second end of the second throttling device 106 is connected to a liquid port of the first gas-liquid separator 104.

And a second gas-liquid separator 107 for separating the gas-liquid mixed refrigerant. Wherein the gas-liquid port of the second gas-liquid separator 107 is connected to the first end of the second throttling means, the gas port of the second gas-liquid separator 107 is connected to the first section of the third indoor air conditioning unit 108, and the liquid port of the second gas-liquid separator 107 is connected to the first end of the second indoor air conditioning unit 109.

And a third indoor air conditioning unit 108 for exchanging heat with indoor air. Wherein, the first end of the third indoor air conditioning unit 108 is connected with the gas port of the second gas-liquid separator 107, and the second end of the third indoor air conditioning unit 108 is connected with the third end of the four-way valve. The third indoor air-conditioning unit 108, the second indoor air-conditioning unit 109, and the first indoor air-conditioning unit 105 are installed in different spaces or rooms, respectively.

Further, in practical application, to the actual environment difference in different regions, assorted heat transfer volume demand is also different, and different time quantums are also different to the demand of heat transfer volume even, consequently, in this application, can further accurately provide different heat transfer volumes for different regions through the aperture of adjusting second throttling arrangement to satisfy user's diversified demand, improve user's travelling comfort.

Alternatively, after detecting that the user issues an instruction to adjust the opening degree of the throttling device, the central air conditioning system 1000 may acquire and recognize data related to the indoor environment information, and then adjust the opening degree of the second throttling device according to the recognition result.

Therefore, the central air-conditioning system can provide different heat exchange amounts by additionally arranging the shunt regulation unit comprising the shunt regulation subunit, so that when the indoor air-conditioning unit is attempted to be installed in different spaces or rooms, the different heat exchange amounts which can be provided by the first to third indoor air-conditioning units can be comprehensively considered, and reasonable arrangement is carried out. Furthermore, after the installation is finished, the opening degree of the second throttling device can be adjusted according to different requirements of users when the central air-conditioning system is electrified and works every time, so that the heat exchange quantity can be dynamically and accurately adjusted.

For example, the first indoor air conditioning unit 105 may be installed in a room with the minimum heat exchange amount requirement, such as a baby room and a room of an old person, so that only the refrigerant with weak throttling exchanges heat in the first indoor air conditioning unit 105 to generate a small heat exchange amount. Further, when sunlight is directly irradiated into a room, and the sensible temperature of the old or the baby in the room is higher than that in a common condition, an adjusting instruction can be sent out, and the opening degree of the second throttling device 106 is increased to increase the heat exchange amount; after the old man or baby just finished the bathing, equally can send the instruction, reduce second throttling arrangement 106's aperture to reduce the heat transfer volume, in order when guaranteeing refrigeration effect, satisfied old man room and baby's room to the diversified demand of heat transfer volume, greatly improved old man and baby's travelling comfort.

The third indoor air conditioning unit 108 may be installed in a room with a central heat exchange requirement, such as a living room, a washroom, or other public areas, where the requirement for the heat exchange quantity is high, but the people density fluctuates significantly, and there are many people and few people, so that the user may send an instruction to increase or decrease the opening degree of the second throttle device 106 according to different times. For example, during non-operating time, the opening degree of the second throttling device 106 can be increased to provide more heat exchange amount; during working time, the opening degree of the second throttling device 106 is reduced, less heat exchange amount is provided, and the requirement for the heat exchange amount in a public area is met.

The second indoor air conditioning unit 109 may be installed in a room where the heat exchange amount is most required, such as a domestic KTV room, a fitness room, etc., where the heat exchange amount is required to be large, but some areas may be not always used. Therefore, the user can issue an instruction to increase or decrease the opening degree of the second throttle device 106 according to the usage. For example, when the above-mentioned region is used, the flow path can be selectively opened to ensure a sufficient heat exchange amount; when the heat exchanger is not used, the opening degree of the second throttling device 106 can be greatly reduced, and even the flow path is closed, so that the heat exchange quantity is reduced, the requirement of the heat exchange quantity in the region can be met, the power consumption can be reduced, and the energy consumption is saved.

1. because the split-flow adjusting unit comprising the split-flow adjusting subunit is additionally arranged in the central air-conditioning system, part of the refrigerant of the central air-conditioning system is only throttled once, and the other part of the refrigerant is throttled twice, so that different heat exchange amounts are provided, and the heat exchange amounts in different spaces or rooms can be matched with actual environment requirements.

2. Because this application can be when current heat transfer volume unsatisfied demand, the user can give an instruction, and the corresponding throttling arrangement's of control regulation aperture, and then makes this central air conditioning system through the aperture of adjusting second throttling arrangement, can also be to different environmental demands, and the heat transfer volume is adjusted to developments and accuracy, when satisfying user's diversified demand, further improved user's travelling comfort, can also reach the purpose that saves the energy consumption, promote intelligent degree and control effect.

In some embodiments, as shown in FIGS. 5-6, the split flow regulating unit 150 includes at least two split flow regulating subunits 150-n cascaded in series. Wherein the split regulating subunit 150-n comprises: at least two third throttling devices 116, at least two third gas-liquid separators 117, and at least two fourth indoor air-conditioning units 118.

Wherein the number of the third throttling means, the third gas-liquid separator and the fourth indoor air-conditioning unit is the same as the number of the division adjusting sub-units 150-n. For example, the split flow adjusting unit 150 includes a split flow adjusting subunit 150-1, a split flow adjusting subunit 150-2, and a split flow adjusting subunit 150-3, and when there are three subunits, the split flow adjusting unit 150 includes three third throttling devices 116, three third gas-liquid separators 117, and three fourth indoor air conditioning units 118.

The third throttling device 116 is used for reducing the pressure of the refrigerant and controlling the flow rate of the refrigerant. Wherein a first end of the third throttling device 116 is connected with a gas-liquid port of the third gas-liquid separator 117, as shown in fig. 5, a second end of the third throttling device 116 is connected with a liquid port of the first gas-liquid separator 104; or, as shown in fig. 6, connected to the liquid port of the third gas-liquid separator in the upper-stage split-flow regulating subunit.

It should be noted that, in this application, the opening degree of the third throttling device can be adjusted according to different requirements of users, so as to dynamically and accurately adjust the heat exchange amount.

And a third gas-liquid separator 117 for separating the vapor-liquid mixed refrigerant. Among them, the gas-liquid port of the third gas-liquid separator 117 is connected to the first end of the third throttling device 116, the gas port of the third gas-liquid separator 117 is connected to the first end of the fourth indoor air-conditioning unit 118, and the liquid port of the last stage of the third gas-liquid separator 117 is connected to the first end of the second indoor air-conditioning unit.

And a fourth indoor air conditioning unit 118 for exchanging heat with the indoor air. A first end of the fourth indoor air conditioning unit 118 is connected to the gas port of the third gas-liquid separator 117, and a second end of the fourth indoor air conditioning unit 118 is connected to the fourth end of the four-way valve 110.

The fourth indoor air conditioning unit 118, the second indoor air conditioning unit 109, and the first indoor air conditioning unit 105 are installed in different spaces or rooms, respectively.

Thus, by adding the split flow adjusting unit 150 including at least two sub-units, the amount of heat exchange in the room where the first indoor air conditioning unit 105 is located is minimized, the amount of heat exchange in all the rooms where the fourth indoor air conditioning unit 118 is located is centered, and the amount of heat exchange in the room where the second indoor air conditioning unit 109 is located is maximized.

It should be noted that, when the arrangement is performed in the connection manner as shown in fig. 5, the heat exchange amount in the room where each fourth indoor air-conditioning unit 118 is provided is close to and is greater than the heat exchange amount in the room where the first indoor air-conditioning unit 105 is located; when arranged in the connection manner as shown in fig. 6, the heat exchange amount in each room where the fourth indoor air-conditioning unit 118 is provided is gradually decreased and still larger than the heat exchange amount in the room where the first indoor air-conditioning unit 105 is located.

It should be noted that, in order to further ensure the comfort of all users in different spaces or rooms, in the present application, at least two sequentially cascaded split-flow adjusting subunits 150-n may be added by duplicating the split-flow adjusting unit 150, so that the central air conditioning system 1000 can provide a matched heat exchange amount according to different requirements of different users in more spaces or rooms.

It should be noted that, in the present application, the shunt regulator unit 150 may be duplicated many times according to different actual requirements, so that the number of the shunt regulator subunits 150-n can meet the requirements.

For example, the shunting adjustment unit 150 may be copied for 1 time, so that the shunting adjustment unit 150 includes a shunting adjustment subunit 150-1 and a shunting adjustment subunit 150-2, which are two subunits; or the split-flow adjusting unit 150 may be duplicated 2 times, so that the split-flow adjusting unit 150 includes three sub-units, namely, a split-flow adjusting sub-unit 150-1, a split-flow adjusting sub-unit 150-2, and a split-flow adjusting sub-unit 150-3.

As a possible implementation, as shown in fig. 7, the shunt regulation unit 150 includes two shunt regulation subunits 150-n cascaded in sequence.

Wherein, reposition of redundant personnel regulation subunit 150-1 includes: a third throttling device 116, a third gas-liquid separator 117, and a fourth indoor air conditioning unit 118; a split flow conditioning subunit 150-2 comprising: a third throttling device 116, a third gas-liquid separator 117, and a fourth indoor air-conditioning unit 118.

First ends of the two third throttling devices 116 are respectively connected with a gas-liquid port of the third gas-liquid separator 117, and second ends of the two third throttling devices 116 are respectively connected with a liquid port of the first gas-liquid separator 104.

Gas-liquid ports of the two third gas-liquid separators 117 are connected to a first end of the third throttling device 116, gas ports of the two third gas-liquid separators 117 are connected to a first end of the fourth indoor air-conditioning unit 118, and a liquid port of the last-stage third gas-liquid separator 117 is connected to a first end of the second indoor air-conditioning unit.

First ends of the two fourth indoor air-conditioning units 118 are connected to gas ports of the third gas-liquid separator 117, respectively, and second ends of the two fourth indoor air-conditioning units 118 are connected to a fourth end of the four-way valve 110, respectively.

Thus, in the central air conditioning system 1000, the split flow adjusting unit 150 includes two sub-units, and the first indoor air conditioning unit 105, the second indoor air conditioning unit, and the two fourth indoor air conditioning units 118 are respectively disposed in different spaces or rooms, so that the amount of heat exchange provided by the central air conditioning system 1000 can be matched with the actual environment of four different areas.

1. because the split-flow adjusting unit comprising at least two split-flow adjusting subunits is additionally arranged in the central air-conditioning system, part of the refrigerant of the central air-conditioning system is only throttled once, and the other part of the refrigerant is throttled twice, so that different heat exchange amounts are provided, and further heat exchange amounts matched with actual environment requirements are provided for more spaces or rooms. Alternatively, the shunt regulator units may be duplicated a plurality of times according to the setting of the actual space or room, so that the number of shunt regulator units matches the requirement of the space or room.

2. Because can be through adjusting the aperture of shunting adjusting element middle third throttling arrangement in this application, to different environmental demands, the dynamic and accurate adjustment heat transfer volume when further having improved user's travelling comfort, can also reach the purpose that energy saving consumed, promoted intelligent degree and control effect.

Fig. 8 is a flowchart illustrating a method for controlling a central air conditioning system according to an embodiment of the present disclosure.

As shown in fig. 8, the method for controlling a central air conditioning system according to the present application includes the following steps:

s101, receiving a first control instruction.

It should be noted that, when a user tries to start the central air conditioning system to perform cooling or heating, a first control instruction for controlling the central air conditioning system to enter a cooling operation mode or a heating operation mode may be input through a voice or a remote control panel, and after the user inputs the first control instruction for controlling the central air conditioning system to enter the cooling operation mode or the heating operation mode, the central air conditioning system may automatically receive the first control instruction.

And S102, controlling the four-way valve to connect the first end and the second end of the four-way valve and the third end and the fourth end of the four-way valve or connect the first end and the fourth end of the four-way valve and the second end and the third end of the four-way valve according to a first control instruction.

It should be noted that, because the connection modes of the four-way valve are different for different heat exchange operation modes, after the central air-conditioning system receives the first control instruction, the first control instruction can be identified, and the four-way valve is controlled to connect the corresponding ports according to the identification result.

Optionally, if the first control instruction is identified as an instruction for controlling the central air-conditioning system to enter the cooling operation mode, the four-way valve can be controlled to connect the first end and the second end of the four-way valve and the connection between the third end and the fourth end; if the first control command is recognized as a command for controlling the central air-conditioning system to enter a heating operation mode, the connection between the first end and the fourth end and the connection between the second end and the third end of the four-way valve can be controlled to be switched on.

It should be noted that, after the four-way valve is connected to the corresponding ports, the heat exchange process of the central air conditioning system may refer to the description in the central air conditioning system, and is not described in detail herein.

In practical application, different to the actual environment in different regions, assorted heat transfer volume demand is also different, and even the different time quantum is also different to the demand of heat transfer volume, consequently, in this application, can be through adjusting the aperture of second throttling arrangement or third throttling arrangement, further accurately provide different heat transfer volumes for different regions.

As a possible implementation manner, as shown in fig. 9, the method specifically includes the following steps:

s201, receiving a second control instruction.

When the user attempts to adjust the opening degree of the throttle device, a second control command for adjusting the opening degree of the throttle device may be input through voice or a remote control panel, and the central air conditioning system may automatically receive the second control command after the user inputs the second control command for adjusting the opening degree of the throttle device.

And S202, controlling the opening degree of the second throttling device or the third throttling device according to a second control command.

Alternatively, after the central air conditioning system receives the second control instruction, the second control instruction may be recognized, and the opening degree of the corresponding throttling device may be controlled according to the recognition result.

If the second control instruction is identified as an instruction for controlling and adjusting the opening degree of the second throttling device, the opening degree of the second throttling device can be adjusted; if the second control instruction is identified as an instruction for controlling the adjustment of the opening degree of the third throttling means, the opening degree of the third throttling means may be adjusted.

The manner of determining the magnitude and direction of the opening degree adjustment may be set according to actual conditions.

Optionally, after receiving the second control instruction, the indoor temperature may be acquired, the acquired indoor temperature is subtracted from the preset temperature, a difference between the indoor temperature and the preset temperature is determined, and a mapping between a preset difference and an opening degree adjustment amplitude and direction is queried according to the difference, so as to adjust the opening degree of the corresponding throttling device according to the acquired adjustment amplitude and direction.

Optionally, after receiving the second control instruction, obtaining the current time, comparing the obtained current time with a preset time, and if it is recognized that the current time is within a preset time range, increasing the opening to a first preset opening; if it is recognized that the current time is not within the preset time range, the opening degree may be decreased to a second preset opening degree. The first preset opening degree is larger than the second preset opening degree, and the second preset opening degree is 0 at minimum.

It should be noted that, the opening degree adjusting process of the central air conditioning system may refer to the description in the central air conditioning system, and is not described in detail herein.

As shown in fig. 10, an embodiment of the present application further provides an electronic device 200, where the electronic device 200 includes: the memory 21, the processor 22 and the computer program stored on the memory 21 and capable of running on the processor, the processor executes the program to realize the control method of the central air conditioning system.

In order to implement the above embodiments, the present invention also proposes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described control method of the central air conditioning system.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A central air conditioning system, comprising: the central air-conditioning system comprises a compressor, a four-way valve, an outdoor heat exchange unit and a first throttling device, wherein the outlet of the compressor is connected with the first end of the four-way valve, the first end of the outdoor heat exchange unit is connected with the second end of the four-way valve, the second end of the outdoor heat exchange unit is connected with the first end of the first throttling device, the inlet of the compressor is connected with the third end of the four-way valve, and the central air-conditioning system further comprises:

the gas-liquid port of the first gas-liquid separator is connected with the second end of the first throttling device;

a first indoor air conditioning unit, a first end of which is connected to the gas port of the first gas-liquid separator, and a second end of which is connected to a fourth end of the four-way valve;

the split-flow adjusting unit is respectively connected with the liquid port of the first gas-liquid separator and the fourth end of the four-way valve;

a second indoor air conditioning unit, a first end of which is connected with the shunt regulation unit and a second end of which is connected with a fourth end of the four-way valve;

the reposition of redundant personnel regulating unit includes at least one reposition of redundant personnel regulation subunit, works as when the reposition of redundant personnel regulating unit includes a reposition of redundant personnel regulation subunit, reposition of redundant personnel regulation subunit includes: a second throttling device; a gas-liquid port of the second gas-liquid separator is connected with a first end of the second throttling device; a third indoor air conditioning unit, wherein a first end of the third indoor air conditioning unit is connected with the gas port of the second gas-liquid separator, and a second end of the third indoor air conditioning unit is connected with a fourth end of the four-way valve; wherein a first end of the second indoor air conditioning unit is connected with the liquid port of the second gas-liquid separator, and a second end of the second indoor air conditioning unit is connected with a fourth end of the four-way valve; the second end of the second throttling device is connected with the liquid port of the first gas-liquid separator.

2. The central air conditioning system according to claim 1, wherein when the flow dividing regulation unit includes at least two flow dividing regulation subunits that are cascaded in sequence, the flow dividing regulation subunit includes:

a third throttling means;

a gas-liquid port of the third gas-liquid separator is connected with the first end of the third throttling device;

a fourth indoor air conditioning unit, a first end of which is connected to the gas port of the third gas-liquid separator, and a second end of which is connected to a fourth end of the four-way valve;

wherein the content of the first and second substances,

a first end of the second indoor air conditioning unit is connected with a liquid port of the third gas-liquid separator in the last stage of the split flow regulating subunit, and a second end of the second indoor air conditioning unit is connected with a fourth end of the four-way valve;

and the second end of the third throttling device is connected with the liquid port of the first gas-liquid separator or the liquid port of the third gas-liquid separator in the upper-stage flow splitting regulation subunit.

3. The central air conditioning system according to claim 2, wherein the third indoor air conditioning unit or the fourth indoor air conditioning unit of the first indoor air conditioning unit, the second indoor air conditioning unit, and the split flow conditioning unit are respectively provided in different spaces or rooms.

4. The central air conditioning system according to claim 2, wherein the third indoor air conditioning unit or the fourth indoor air conditioning unit of the first indoor air conditioning unit, the second indoor air conditioning unit, and the split flow conditioning unit is an indoor heat exchanging unit.

5. A control method of a central air conditioning system, which is applied to the central air conditioning system according to any one of claims 1 to 4, the control method comprising:

receiving a first control instruction;

and controlling a four-way valve to connect the first end and the second end of the four-way valve and the third end and the fourth end of the four-way valve according to the first control instruction, or connecting the first end and the fourth end of the four-way valve and the second end and the third end of the four-way valve.

6. The control method according to claim 5, characterized by further comprising:

receiving a second control instruction;

and controlling the opening degree of the second throttling device or the third throttling device according to the second control instruction.

7. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements a method of controlling a central air conditioning system as claimed in claim 5 or 6.

8. A computer-readable storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the control method of a central air-conditioning system according to claim 5 or 6.