CN114087739A

CN114087739A - Fresh air equipment control method and device, fresh air equipment and storage medium

Info

Publication number: CN114087739A
Application number: CN202111408795.6A
Authority: CN
Inventors: 徐振坤; 刘步东; 李金波; 杜顺开; 黄剑云; 高卓贤
Original assignee: GD Midea Air Conditioning Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-02-25
Anticipated expiration: 2041-11-24
Also published as: CN114087739B

Abstract

The invention discloses a fresh air equipment control method, a device, fresh air equipment and a storage medium, and relates to the technical field of air treatment; when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; and driving a first heat exchange system according to the first operation mode, and driving a second heat exchange system according to the second operation mode so as to dehumidify the fresh air. According to the fresh air temperature control method and the fresh air temperature control system, the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system are determined according to the fresh air temperature, and the corresponding first heat exchange system and the corresponding second heat exchange system are driven according to the first operation mode and the second operation mode to dehumidify the fresh air, so that the air outlet temperature regulation capacity of the fresh air equipment is improved.

Description

Fresh air equipment control method and device, fresh air equipment and storage medium

Technical Field

The invention relates to the technical field of air treatment, in particular to a fresh air equipment control method and device, fresh air equipment and a storage medium.

Background

With the continuous improvement of the life quality of people, the indoor environmental requirement is also improved. In order to make the indoor environment more comfortable, people need to adjust not only the indoor temperature but also the indoor humidity. Most of new trend equipment is when dehumidification reheat mode at present, and the temperature of air-out temperature is lower usually to the regulating power difference hardly satisfies the manifold demand of user.

Disclosure of Invention

The invention mainly aims to provide a control method and device of fresh air equipment, the fresh air equipment and a storage medium, and aims to solve the technical problem that the outlet air temperature adjusting capability is poor in the prior art in a dehumidification and reheating mode.

In order to achieve the purpose, the invention provides a control method of fresh air equipment, wherein the fresh air equipment comprises a first heat exchange system and a second heat exchange system, the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel;

the fresh air equipment control method comprises the following steps:

acquiring the fresh air temperature of fresh air equipment;

when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; and the number of the first and second groups,

and driving a first heat exchange system according to the first operation mode, and driving a second heat exchange system according to the second operation mode so as to dehumidify the fresh air.

Optionally, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature includes:

and when the fresh air temperature is lower than a first preset target temperature, determining that the target operation mode of the fresh air equipment is a dehumidification reheating mode.

Optionally, the at least one heat exchanger of the first heat exchange system is disposed in a fresh air channel, the at least one heat exchanger of the second heat exchange system is disposed in a fresh air channel, at least three heat exchangers are disposed in the fresh air channel, and the determining of the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature includes:

and when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature, at least one of the first operation mode and the second operation mode is judged to be a dehumidification reheating mode.

Optionally, the at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, and the determining of the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further includes:

and when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature, judging that the first operation mode is a dehumidification reheating mode, and the second operation mode is a stop mode.

and when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than a third preset target temperature, judging that the first operation mode is a stop mode, and judging that the second operation mode is a dehumidification reheating mode.

Optionally, the determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature further includes:

and when the fresh air temperature is lower than a fourth preset target temperature, judging that the first heat exchange system is in a dehumidification reheating mode, and judging that the second heat exchange system is in a heating mode.

Optionally, the fresh air device includes: the first heat exchange system comprises a first compressor, a first four-way valve, a fifth heat exchanger, a first throttling element, a first heat exchanger, a second throttling element and a second heat exchanger which are connected in sequence; the second heat exchange system comprises a second compressor, a second four-way valve, a sixth heat exchanger, a third throttling element, a third heat exchanger, a fourth throttling element and a fourth heat exchanger which are sequentially connected;

wherein the area of the first heat exchanger is less than or equal to 50% of the area of the fifth heat exchanger; the area of the third heat exchanger is less than or equal to 150% of the area of the sixth heat exchanger;

the fifth heat exchanger is arranged in the external environment;

the second heat exchanger, the fourth heat exchanger, the first heat exchanger, the third heat exchanger and the fresh air fan are sequentially arranged in the fresh air channel from the outdoor direction to the indoor direction; and the number of the first and second groups,

the sixth heat exchanger and the exhaust fan are arranged in the exhaust channel;

the driving of the first heat exchange system according to the first operation mode and the driving of the second heat exchange system according to the second operation mode includes:

when the first operation mode is a refrigeration mode, the first throttling element works, the second throttling element does not work, and the first heat exchanger and the second heat exchanger are combined to achieve the fresh air cooling effect; when the first operation mode is a dehumidification reheating mode, the first throttling element does not work, the second throttling element works, the second heat exchanger in the first heat exchange system is an evaporator, and the first heat exchanger is a condenser; when the second operation mode is a refrigeration mode, the third throttling element works, the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger are combined to realize the fresh air cooling effect; when the second operation mode is a dehumidification reheating mode, the third throttling element does not work, the fourth throttling element works, the fourth heat exchanger in the second heat exchange system is an evaporator, and the third heat exchanger is a condenser.

Optionally, drive first heat exchange system according to first mode of operation to drive second heat exchange system according to second mode of operation, after dehumidifying to the new trend, include:

when the first operation mode is a dehumidification reheating mode, acquiring a first coil temperature of the second heat exchanger and/or a second coil temperature of the fourth heat exchanger; and the number of the first and second groups,

when the first coil temperature is higher than a first preset coil temperature, adjusting the rotating speed of a first compressor or the opening degree of a second throttling element to enable the first coil temperature to be lower than or equal to the first preset coil temperature;

when the second operation mode is a dehumidification reheating mode, acquiring a second coil temperature of the fourth heat exchanger; and the number of the first and second groups,

and when the temperature of the second coil pipe is greater than the second preset coil pipe temperature, adjusting the rotating speed of a second compressor or the opening degree of a fourth throttling element so as to enable the temperature of the second coil pipe to be less than or equal to the second preset coil pipe temperature.

Optionally, the adjusting the rotation speed of the second compressor or the opening degree of the fourth throttling element so that the second coil temperature is the second preset coil temperature includes:

acquiring the air outlet temperature of the fresh air equipment;

when the outlet air temperature is lower than the target temperature and the second operation mode is a dehumidification reheating mode or a heating mode, adjusting the rotating speed of a second fan, the rotating speed of a second compressor or the opening degree of a throttling element to improve the outlet air temperature to be the target temperature; and the number of the first and second groups,

and when the air outlet temperature is lower than the target temperature and the second operation mode is the stop mode, adjusting the rotating speed of the first fan, the rotating speed of the first compressor or the opening degree of the second throttling element so as to improve the air outlet temperature to be the target temperature.

In addition, in order to achieve the above object, the present invention further provides a fresh air device, including: the fresh air equipment control method comprises fresh air equipment, a storage, a processor and a fresh air equipment control program which is stored on the storage and can run on the processor, wherein when the fresh air equipment control program is executed by the processor, the fresh air equipment control method is realized.

In addition, in order to achieve the above object, the present invention further provides a storage medium, in which a fresh air device control program is stored, and when the fresh air device control program is executed by a processor, the fresh air device control method is implemented.

In addition, in order to achieve the above object, the present invention further provides a fresh air device control apparatus, including:

the temperature detection module is used for acquiring the fresh air temperature of the fresh air equipment;

the system comprises a mode determining module, a dehumidification module and a control module, wherein the mode determining module is used for determining a first operation mode of a first heat exchange system and a second operation mode of a second heat exchange system according to the fresh air temperature when fresh air equipment is in a dehumidification mode; and the number of the first and second groups,

and the state adjusting module is used for driving the first heat exchange system according to the first operation mode and driving the second heat exchange system according to the second operation mode to dehumidify the fresh air.

According to the invention, the fresh air equipment comprises a first heat exchange system and a second heat exchange system, the fresh air equipment comprises the first heat exchange system and the second heat exchange system, the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel; acquiring the fresh air temperature of fresh air equipment; when the fresh air equipment is in a dehumidification mode, determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature; and driving a first heat exchange system according to the first operation mode, and driving a second heat exchange system according to the second operation mode so as to dehumidify the fresh air. According to the fresh air temperature control method and the fresh air temperature control system, the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system are determined according to the fresh air temperature, and the corresponding first heat exchange system and the corresponding second heat exchange system are driven according to the first operation mode and the second operation mode to dehumidify the fresh air, so that the air outlet temperature regulation capacity of the fresh air equipment is improved.

Drawings

Fig. 1 is a schematic structural diagram of a fresh air device in a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of a fresh air device according to the present invention;

FIG. 3 is a schematic flow chart of a control method for a fresh air device according to a first embodiment of the present invention;

FIG. 4 is a schematic flow chart of a control method for a fresh air device according to a second embodiment of the present invention;

FIG. 5 is a schematic flow chart of a control method for a fresh air device according to a third embodiment of the present invention;

FIG. 6 is a schematic flow chart of a control method for a fresh air device according to a fourth embodiment of the present invention;

fig. 7 is a block diagram of the first embodiment of the fresh air device control apparatus according to the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1001	Processor with a memory having a plurality of memory cells	C1～C2	First to second compressors
1002	Communication bus	V1～V2	First to second four-way valves
				1003	User interface	K1～K2	First to second throttling elements
1004	Network interface	Y1～Y3	First to third fans
				1005	Memory device	H1～H6	First to sixth heat exchangers
10	Fresh air channel	100	Temperature detection module
				20	Air exhaust channel	200	Mode determination module
300	State regulating module

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a fresh air device in a hardware operating environment according to an embodiment of the present invention.

As shown in fig. 1, the fresh air device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001. The fresh air equipment is used for extracting air from the outdoor environment, processing the air and transmitting the processed air to the indoor environment as fresh air.

Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the fresh air device and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.

As shown in FIG. 1, memory 1005, identified as one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a fresh air device control program.

In the fresh air device shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the fresh air device calls a fresh air device control program stored in the memory 1005 through the processor 1001, and executes the fresh air device control method provided by the embodiment of the invention.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of a fresh air device according to the present invention. In order to more clearly illustrate the fresh air equipment control method, the invention provides the fresh air equipment, and the fresh air equipment control method is executed on the basis of the fresh air equipment.

As shown in fig. 2, the fresh air device may have a first heat exchange system and a second heat exchange system. Wherein, the first heat exchange system may include a first compressor C1, a first four-way valve V1, a fifth heat exchanger H5, a first throttling element K1, a second throttling element K2, a first heat exchanger H1, and a second heat exchanger H2. The second heat exchange system may include a second compressor C2, a second four-way valve V2, a sixth heat exchanger H6, a third throttling element K3, a fourth throttling element K4, a third heat exchanger H3, and a fourth heat exchanger H4.

Wherein, the first to fourth throttling elements may be electronic expansion valves. The second heat exchanger H2 and the fourth heat exchanger H4 can be used for cooling and dehumidifying fresh air, and the first heat exchanger H1 and the third heat exchanger H3 can be used for heating the fresh air. Here, it should be understood that in the fresh air apparatus, the first heat exchanger H1 and the third heat exchanger H3 may not be provided at the same time, for example, when only one heat exchanger is required to heat the fresh air, one of the first heat exchanger H1 and the third heat exchanger H3 may be provided according to a specific operation mode of the first heat exchange system and the second heat exchange system. In addition, in this scheme, can also set up the heat exchanger or the heat transfer system of more multistage. When more multistage heat exchange systems are arranged, at least two heat exchangers are required to be correspondingly arranged in the fresh air channel. When more stages of heat exchangers are provided, a plurality of heat exchangers for raising the temperature may be provided in each system.

In the specific setting process, in order to ensure different outlet air temperatures and energy-saving requirements, the area of the first heat exchanger H1 can be set to be less than or equal to 50% of the area of the fifth heat exchanger H5; the area of the third heat exchanger H3 is set to 150% or less of the area of the sixth heat exchanger H6.

In this scheme, through configuration two-way flow's first heat transfer system and second heat transfer system, form 2 sets of air source heat pump circulations, make new trend equipment possess two sets of different condensation temperature and evaporating temperature, on this system architecture basis, to the energy-conserving demand of adjusting the temperature of the refrigeration of new trend equipment and reheat dehumidification, through switching the cross valve and controlling throttling element to the system, realize the refrigeration, heat and reheat dehumidification mode under the dehumidification mode.

In addition, the first heat exchange system and the second heat exchange system can also share a multi-cylinder compressor. Specifically, the fresh air device includes a compressor having two independent cylinders. A first cylinder in the compressor is connected with a first four-way valve V1, a fifth heat exchanger H5, a first throttling element K1, a first heat exchanger H1, a second throttling element K2 and a second heat exchanger H2 to form a first heat exchange system. A second cylinder in the compressor is connected with a second four-way valve V2, a sixth heat exchanger H6, a third throttling element K3, a third heat exchanger H3, a fourth throttling element K and a fourth heat exchanger H4 to form a second heat exchange system.

It should be noted that the fresh air device further has a fresh air channel 10 and an exhaust air channel 20, the fresh air channel 10 is used for inputting fresh air to the indoor, and the exhaust air channel 20 is used for outputting air to the outdoor. The fifth heat exchanger H5 in the first heat exchange system is an outdoor heat exchanger, and the first heat exchanger H1 and the second heat exchanger H2 can be located in the fresh air channel 10 and used for performing heat exchange treatment on fresh air; the sixth heat exchanger H6 in the second heat exchange system may be located in the exhaust channel 20, and the third heat exchanger H3 and the fourth heat exchanger H4 may be located in the fresh air channel 10, and are also used for processing fresh air. Correspondingly, the first heat exchange system further comprises a first fan Y1 corresponding to the fifth heat exchanger H5, and the fan is used for exchanging heat between the refrigerant in the fifth heat exchanger H5 and the outdoor environment. The fresh air channel 10 is also provided with a third fan Y3, and the third fan Y3 is used for extracting air from the outdoor environment to the fresh air channel 10. The exhaust duct 20 is further provided with a second fan Y2, and the second fan Y2 is used for drawing air from the indoor environment into the exhaust duct 20. The first fan Y1 is an outdoor fan, the second fan Y2 is an exhaust fan, and the third fan Y3 is a fresh air fan.

The working principle of the fresh air equipment is as follows: the third fan Y3 extracts fresh air from the outdoor environment, the fresh air passes through the first heat exchanger H1, the third heat exchanger H3, the fourth heat exchanger H4 and the second heat exchanger H2 in sequence to exchange heat for four times, and then the fresh air is conveyed to the indoor environment. The second fan Y2 draws exhaust air from the indoor environment, and the exhaust air is subjected to primary heat exchange by the sixth heat exchanger H6 and then is conveyed to the outdoor. The fresh air equipment can have a cooling mode and a heating mode, wherein the cooling mode refers to that fresh air is cooled and/or dehumidified by the first heat exchanger H1, the second heat exchanger H2, the third heat exchanger H3 and the fourth heat exchanger H4 and then is conveyed to the indoor; the heating mode refers to that fresh air is heated by the first heat exchanger H1, the second heat exchanger H2, the third heat exchanger H3 and the fourth heat exchanger H4 and then is conveyed to the indoor.

It should be understood that when the first heat exchange system is operated in a refrigerating mode, the refrigerant in the first heat exchange system circulates to the first compression C1, the first four-way valve V1, the fifth heat exchanger H5, the first throttling element K1, the first heat exchanger H1, the second throttling element K2, the second heat exchanger H2, the first four-way valve V1 and finally returns to the first compression C1. When the first heat exchange system is in heating operation, the refrigerant in the first heat exchange system flows in a circulating mode to a first compression C1, a first four-way valve V1, a second heat exchanger H2, a second throttling element K2, a first heat exchanger H1, a first throttling element K1, a fifth heat exchanger H5 and a first four-way valve V1, and finally returns to the first compression C1.

When the second heat exchange system operates in a cooling mode, the refrigerant in the second heat exchange system circularly flows to the second compression C2, the second four-way valve V2, the sixth heat exchanger H6, the third throttling element K3, the third heat exchanger H3, the fourth throttling element K4, the fourth heat exchanger H4 and the second four-way valve V2, and finally returns to the second compression C2. During heating operation of the second heat exchange system, refrigerant in the second heat exchange system circularly flows to the second compression C2, the second four-way valve V2, the fourth heat exchanger H4, the fourth throttling element K4, the third heat exchanger H3, the third throttling element K3, the sixth heat exchanger H6 and the second four-way valve V2, and finally returns to the second compression C2.

Based on the hardware structure, the embodiment of the control method of the fresh air equipment is provided.

Referring to fig. 3, fig. 3 is a schematic flow chart of a control method of a fresh air device according to a first embodiment of the present invention, and the control method of the fresh air device according to the first embodiment of the present invention is provided.

In the first embodiment, the fresh air device control method can be applied to the fresh air device as described above.

The fresh air equipment control method specifically comprises the following steps:

step S10: and acquiring the fresh air temperature of the fresh air equipment.

It should be understood that the executing main body of the present embodiment is the above-mentioned fresh air device, the fresh air device has functions of image processing, data communication, program operation, and the like, and each component in the fresh air device is generally controlled by a core controller, so the executing main body of the present embodiment may also be the controller, and the controller is taken as the executing main body in the present embodiment for description.

It should be noted that the fresh air temperature refers to the temperature of the fresh air input at the input end of the fresh air channel. Fresh air is input into the fresh air channel from the outdoor environment by a third fan in the fresh air channel.

Under the condition of the known fresh air temperature, the controller can determine the running state of the fresh air equipment according to the fresh air temperature. For example, the set indoor temperature is 25 ℃, when the temperature of the fresh air is higher than 25 ℃, the fresh air equipment needs to cool the fresh air, and the fresh air equipment is in a refrigeration mode; similarly, when the temperature of the fresh air is higher than 25 ℃, the fresh air equipment is in a heating mode.

In specific implementation, the controller may collect the temperature of the fresh air through a temperature sensor disposed at the third fan.

Step S20: when the fresh air equipment is in a dehumidification and reheating mode, a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system are determined according to the fresh air temperature.

It should be noted that the fresh air device includes a plurality of operation modes, such as a cooling mode, a heating mode, a dehumidification and reheating mode, and the like. The dehumidification reheating mode of the fresh air equipment refers to a mode of heating after dehumidifying fresh air.

The operation modes of the heat exchange system comprise a refrigeration operation mode and a heating operation mode, and the heat exchange system can be in a closed state when the heat exchange system does not work. The first operation mode and the second operation mode respectively refer to a target working mode of the first heat exchange system and a target working mode of the second heat exchange system when the fresh air equipment operates in the dehumidification mode. The target operation mode of the fresh air equipment comprises a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system.

It should be understood that under the influence of the fresh air temperature, the first heat exchange system and the second heat exchange system can be simultaneously in a dual-system refrigeration mode of a refrigeration mode, a single-system refrigeration mode of a refrigeration mode of the first heat exchange system or the second heat exchange system, or a combined mode of a heating mode of the first heat exchange system or the second heat exchange system.

In specific implementation, when the fresh air equipment is in the dehumidification reheating mode, the controller can compare the fresh air temperature with a set temperature value, and divide the fresh air temperature threshold into different temperature intervals. When the fresh air temperature is in different temperature intervals, the first heat exchange system and the second heat exchange system are in different operation modes. For example, when the temperature of the fresh air is in a higher temperature range, the first heat exchange system and the second heat exchange system can be in a refrigeration mode at the same time, and dehumidification and reheating can be realized more quickly. Similarly, when the temperature of the fresh air is in a lower temperature interval, the first heat exchange system can be in a refrigeration mode for dehumidification, and the second heat exchange system can be in a heating mode, so that the temperature of the outlet air reaches the target temperature as soon as possible.

Step S30: and driving a first heat exchange system according to the first operation mode, and driving a second heat exchange system according to the second operation mode so as to dehumidify the fresh air.

It should be noted that, the heat exchanger here refers to a heat exchanger in the fresh air channel. The heat exchanger can adjust the temperature and the humidity of fresh air input by the input end of the fresh air channel, and output air of target temperature and humidity at the output end of the fresh air channel.

It should be understood that the state of the heat exchanger includes a condensing state and an evaporating state. Wherein the condensing state is used for heating the wind flowing through the heat exchanger, and the evaporating state is used for cooling the wind flowing through the heat exchanger. In this embodiment, in the fresh air channel, at least one heat exchange system includes two heat exchangers. For example, a first heat exchange system comprises two heat exchangers, namely a first heat exchanger and a second heat exchanger, in a fresh air channel, wherein the first heat exchanger can preheat or reheat fresh air, and the second heat exchanger can cool and dehumidify the preheated or reheated fresh air. Of course, the second heat exchange system may also include two heat exchangers, i.e., a third heat exchanger and a fourth heat exchanger, in the fresh air channel.

In a specific implementation, the controller may adjust an operation parameter of the first throttling element, the second throttling element, or the first compressor in the first heat exchange system according to the first operation mode to adjust an operation state of the first heat exchanger and the second heat exchanger. The controller can also determine to adjust the operating parameters of a third throttling element, a fourth throttling element or a second compressor in the second heat exchange system according to the second operating mode, so that the working states of the third heat exchanger and the fourth heat exchanger are adjusted, and the first heat exchange system is driven by the first operating mode and the second heat exchange system is driven by the second operating mode.

Wherein the throttling element comprises first to fourth throttling elements. The first throttling element is used for adjusting refrigerants in the fifth heat exchanger and the first heat exchanger, and the second throttling element is used for adjusting refrigerants in the first heat exchanger and the second heat exchanger till now; the third throttling element is used for controlling the refrigerant between the sixth heat exchanger and the third heat exchanger, and the fourth throttling element is used for adjusting the refrigerant between the third heat exchanger and the fourth heat exchanger. In the embodiment of the application, the operation of the throttling element can be understood as that the throttling element plays a role in throttling and pressure reducing in a refrigerant loop of the heat exchange system.

The throttling element being inoperative may be understood as:

the throttling element is fully opened in a refrigerant loop of the heat exchange system;

or, the throttling element (the non-operating throttling element) does not mainly play a role in throttling and depressurizing relative to the throttling element operating in the refrigerant circuit, for example, the throttling element operating in the refrigerant circuit mainly plays a role in throttling and depressurizing, and the throttling element plays an insignificant role in throttling and depressurizing or mainly plays a role in regulating the flow in the refrigerant circuit;

or, the refrigerant in the refrigerant circuit does not pass through the throttling element but passes through a bypass flow path connected with the throttling element in parallel, wherein the bypass flow path can be provided with an on-off electromagnetic valve.

In a first embodiment, a fresh air device has first and second heat exchange systems. Through the new trend temperature that acquires new trend equipment, confirm first operational mode and the second operational mode that first heat transfer system and second heat transfer system correspond according to the new trend temperature, then drive first heat transfer system according to first operational mode, drive second heat transfer system according to the second operational mode, dehumidify the new trend through two heat transfer systems to improve new trend equipment's air-out temperature regulation ability.

Referring to fig. 4, fig. 4 is a schematic flow chart of a control method of a fresh air device according to a second embodiment of the present invention, and the control method of the fresh air device according to the second embodiment of the present invention is provided based on the first embodiment shown in fig. 3.

In the second embodiment, before the step S20, the method further includes:

step S101': and when the fresh air temperature is lower than a first preset target temperature, determining that the target operation mode of the fresh air equipment is a dehumidification reheating mode.

It should be noted that the first preset target temperature is a preset temperature for determining the operation mode of the fresh air device. The first preset target temperature may range from 10 degrees celsius to 30 degrees celsius. The first preset target temperature may be set according to a specific scene.

It should be understood that when the fresh air device is in the cooling mode and the dehumidification and reheat mode, at least one heat exchanger in the fresh air channel is in an evaporation and heat absorption state. For example, in the cooling mode, two heat exchangers in the fresh air channel jointly realize a cooling effect (in an evaporation and heat absorption state) on the fresh air, or all the heat exchangers in the fresh air channel jointly cool the fresh air, so that the air outlet temperature is lower than the fresh air temperature, at this time, at least one heat exchanger exists in the fresh air channel for cooling the fresh air, and the heat exchanger can exist for heating the fresh air; under the dehumidification reheating mode, at least one heat exchanger exists in the fresh air channel and is used for cooling the fresh air to dehumidify, and at least one heat exchanger exists simultaneously and is used for preheating or reheat fresh air, and the heat exchanger that lies in the upper reaches in the fresh air wind channel is used for cooling and dehumidifying, and the heat exchanger that lies in the low reaches is used for reheat fresh air. In this embodiment, the first preset target temperature is mainly used for determining a cooling mode and a dehumidification and reheating mode of the fresh air device.

In a specific implementation, the controller may compare the fresh air temperature with a first preset target temperature to obtain a first comparison result. The first comparison result comprises a comparison result that the fresh air temperature is greater than or equal to a first preset target temperature and a comparison result that the fresh air temperature is smaller than the first preset target temperature.

In this embodiment, when the first comparison result is that the fresh air temperature is greater than or equal to the first preset target temperature, the fresh air device with the excessively high fresh air temperature should operate in the cooling mode. When the fresh air equipment is determined to operate in the refrigeration mode, the parameters of the relevant components are adjusted to enable the fresh air equipment to reduce the fresh air temperature as soon as possible, and the fresh air temperature is compared with the first preset target temperature again. When the first comparison result is that the fresh air temperature is lower than the first preset target temperature, the fresh air equipment should be directly operated in the dehumidification and reheating mode. For example, when the fresh air temperature is 25 ℃ and the humidity is 18g/kg, the user sets the refrigeration mode, the temperature is 25 ℃ and the humidity is 10g/kg, and then the dehumidification reheating mode is entered.

In the second embodiment, whether the fresh air temperature is lower than the first preset target temperature or not is determined by setting the fresh air temperature and comparing the fresh air temperature with the first preset target temperature, so that whether the fresh air equipment directly enters a dehumidification and reheating working mode or not is determined, and the air outlet temperature adjusting capacity of the fresh air equipment is rapidly improved.

Referring to fig. 5, fig. 5 is a schematic flow chart of a control method for a fresh air device according to a third embodiment of the present invention, and the control method for a fresh air device according to the third embodiment of the present invention is proposed based on the first embodiment shown in fig. 3 or the second embodiment shown in fig. 4.

In the third embodiment, the step S20 includes:

step S201: and when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature, at least one of the first operation mode and the second operation mode is judged to be a dehumidification reheating mode.

It should be understood that the first heat exchange system and the second heat exchange system may each include two heat exchangers within the fresh air channel. The two heat exchangers in the first heat exchange system are respectively a first heat exchanger and a second heat exchanger, and the two heat exchangers in the second heat exchange system are respectively a third heat exchanger and a fourth heat exchanger.

It is understood that the first to fourth heat exchangers refer to all heat exchangers included in the first heat exchange system and the second heat exchange system in the fresh air channel. In the adjusting process, adjusting the operating states of a first heat exchanger and a second heat exchanger in a first heat exchange system according to a first operating mode; and adjusting the operation states of a third heat exchanger and a fourth heat exchanger in the second heat exchange system according to the second operation mode.

It should be noted that the second to fourth preset target temperatures are temperatures preset for determining a target temperature interval in which the fresh air temperature is located. The second to fourth preset target temperatures are all between 10 ℃ and 30 ℃. The target temperature interval is a temperature interval for determining the working modes of the first heat exchange system and the second heat exchange system. When the fresh air temperature is in different target temperature intervals, the working modes of the first heat exchange system and the second heat exchange system are different. The target temperature ranges are all in a temperature range between 10 degrees celsius and 30 degrees celsius.

It should be understood that when the temperature of the fresh air is greater than or equal to the second preset target temperature, the temperature of the fresh air is too high, and both the first heat exchange system and the second heat exchange system can be set to be in a refrigeration mode. A first heat exchanger in the first heat exchange system is a subcooler for preheating fresh air, and a second heat exchanger is an evaporator for cooling dehumidification fresh air; a third heat exchanger in the second heat exchange system is used for reheating fresh air for a condenser, and a fourth heat exchanger is used for cooling dehumidifying fresh air for an evaporator.

In specific implementation, a higher temperature can be selected from 10 ℃ to 30 ℃ as a second preset target temperature, and then the fresh air temperature is compared with the second preset target temperature, so that whether the fresh air temperature is lower than the second preset target temperature or not is determined. And when the fresh air temperature is greater than or equal to a second preset target temperature, judging that the first heat exchange system is in a refrigeration mode, and judging that the second heat exchange system is in the refrigeration mode. When the first heat exchange system and the second heat exchange system are both in a refrigeration mode, the controller can enable the first heat exchanger to be a subcooler and preheat fresh air by adjusting the first throttling element to be out of work; the second heat exchanger cools and dehumidifies fresh air for the evaporator by adjusting the throttling and pressure reduction of the second throttling element; the third heat exchanger is used for reheating fresh air for the condenser by adjusting the third throttling element to be out of work; the fourth heat exchanger is used for cooling and dehumidifying fresh air for the evaporator by adjusting the throttling and pressure reduction of the fourth throttling element.

Step S202: and when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature, judging that the first operation mode is a dehumidification reheating mode, and the second operation mode is a stop mode.

It should be noted that the third preset target temperature is a temperature used for determining whether the fresh air temperature is in a target temperature region between the third preset target temperature and the second preset target temperature. The third preset target temperature is less than the second preset target temperature.

It will be appreciated that when the fresh air temperature is less than the second predetermined target temperature, the fresh air temperature is reduced. When the temperature of the fresh air is higher than the third preset target temperature, the first heat exchange system with the good cooling reheating effect can be selected to work independently, and resource waste is avoided.

In specific implementation, when the first operation mode is a refrigeration mode and the second heat exchange system is in a stop mode, the controller adjusts the first heat exchange system, the first throttling element does not work, the second throttling element throttles and reduces pressure to enable the first heat exchanger to be a subcooler and used for preheating fresh air, the second heat exchanger is an evaporator and used for cooling and dehumidifying fresh air, and the second compressor of the second heat exchange system is controlled to stop operation to realize cooling and reheating of the fresh air.

Step S203: and when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than a third preset target temperature, judging that the first operation mode is a stop mode, and judging that the second operation mode is a dehumidification reheating mode.

It should be noted that the fourth preset target temperature is a temperature used for determining whether the fresh air temperature is within a target temperature range from the fourth preset target temperature to the third preset target temperature. The fourth preset target temperature is less than the third preset target temperature.

It should be understood that when the temperature of the fresh air is greater than or equal to the fourth preset target temperature, the temperature of the fresh air is similar to the target temperature for setting, and the second heat exchange system unit with relatively weak cooling reheating can be operated to meet the requirement.

In specific implementation, when the first heat exchange system is in a stop mode and the second operation mode is in a refrigeration operation mode, the controller determines that the third heat exchanger is used for reheating fresh air for the condenser, and the fourth heat exchanger is used for cooling and dehumidifying fresh air for the evaporator. During specific adjustment, the first compressor of the first heat exchange system can be controlled to be closed so as to enable the first heat exchange system not to work. And adjusting a third throttling element in the second heat exchange system to be out of work, throttling and depressurizing a fourth throttling element to enable the third heat exchanger to be used as a condenser for reheating fresh air, and enabling the fourth heat exchanger to be used as an evaporator for cooling and dehumidifying fresh air. For example, when the temperature of the fresh air is 18 ℃ and the humidity is 13g/kg, the user sets the refrigeration mode, sets the temperature to be 20 ℃ and the humidity to be 10g/kg, the second heat exchange system-level system enters the dehumidification reheating mode, the third heat exchanger is used for reheating the fresh air for the condenser, and the fourth heat exchanger is used for cooling the dehumidification fresh air for the evaporator.

Step S204: and when the fresh air temperature is lower than a fourth preset target temperature, judging that the first heat exchange system is in a dehumidification reheating mode, and judging that the second heat exchange system is in a heating mode.

It should be noted that when the temperature of the fresh air is lower than the fourth preset temperature, the temperature of the fresh air is lower, and the fresh air needs to be heated and then is input into the room. At this time, the first heat exchange system can be set to a cooling mode for dehumidification and reheating, and the second heat exchange system is set to a heating mode for heating the fresh air.

In specific implementation, when the first operation mode is a refrigeration operation mode and the second operation mode is a heating operation mode, the controller determines that the first heat exchanger is a subcooler for preheating fresh air, the second heat exchanger is an evaporator for cooling and dehumidifying fresh air, and the third heat exchanger and the fourth heat exchanger in the second heat exchange system are both condensers for heating fresh air. During specific adjustment, the controller can adjust a first throttling element of the first heat exchange system to be out of work, and adjust a second throttling element to be throttled and depressurized, at the moment, the first heat exchanger is a subcooler and used for preheating fresh air, and the second heat exchanger is an evaporator and used for cooling and dehumidifying fresh air; and adjusting a third throttling element in the second heat exchange system to throttle and reduce the pressure, and adjusting a fourth throttling element not to work, wherein the third heat exchanger and the fourth heat exchanger in the second heat exchange system are both condensers for heating fresh air.

In a third embodiment, a target temperature range where the fresh air temperature is located is determined by comparing the fresh air temperature with a second preset target temperature, a third preset target temperature and a fourth preset target temperature to determine a first operation mode and a second operation mode corresponding to the first heat exchange system and the second heat exchange system, then the first heat exchange system and the second heat exchange system are adjusted to the corresponding first working mode and the second working mode through the corresponding first four-way valve and the corresponding second four-way valve, and finally the working states of the heat exchangers in the corresponding systems are adjusted according to the first working mode and the second working mode, so that the air outlet temperature adjusting capability of the fresh air equipment is improved.

Referring to fig. 6, fig. 6 is a schematic flow chart of a control method for a fresh air device according to a fourth embodiment of the present invention. A fourth embodiment of the fresh air device control method according to the present invention is provided based on the third embodiment.

In this embodiment, the step S30 includes the following steps:

step S401: and when the first operation mode is a dehumidification reheating mode, acquiring the temperature of a first coil of the second heat exchanger.

It should be noted that, according to the above description, both the second heat exchanger and the fourth heat exchanger are evaporators. In the cooling and dehumidifying process, the temperature of the refrigerant needs to be acquired to determine that the temperature of the refrigerant in the coil pipe can meet the cooling and dehumidifying requirements.

In specific implementation, the controller may acquire the coil temperature through a temperature sensor disposed at the coil of the second heat exchanger and the fourth heat exchanger, or may acquire the coil temperature through other manners without specific limitation.

Step S402: when the first coil temperature is higher than a first preset coil temperature, the rotating speed of the first compressor or the opening degree of the second throttling element is adjusted, so that the first coil temperature is lower than or equal to the first preset coil temperature.

Step S403: when the second operation mode is a dehumidification reheating mode, acquiring a second coil temperature of the fourth heat exchanger;

step S404: and when the temperature of the second coil pipe is greater than the second preset coil pipe temperature, adjusting the rotating speed of a second compressor or the opening degree of a fourth throttling element so as to enable the temperature of the second coil pipe to be less than or equal to the second preset coil pipe temperature.

It should be understood that the preset coil temperature is a standard temperature preset for whether the coil temperature satisfies cooling dehumidification. The preset coil temperature is in the range of 2 to 20 degrees celsius. And the controller compares the temperature of the coil pipe with the preset temperature of the coil pipe after acquiring the temperature of the coil pipe, and a second comparison result is obtained. The preset coil temperature may be two different temperature values, where a first preset coil temperature is used for comparison with the coil temperature of the second heat exchanger and a second preset coil temperature is used for comparison with the coil temperature of the fourth heat exchanger.

And the second comparison result comprises two comparison results of the coil temperature being greater than the preset coil temperature and the coil temperature being less than or equal to the preset coil temperature. And when the temperature of the coil pipe is equal to the preset temperature of the coil pipe, the state of the heat exchanger does not need to be adjusted, otherwise, the state of the heat exchanger needs to be adjusted.

The compressor is a device for converting a low-pressure gas in the heat exchange system into a high-pressure gas. The compressor includes a first compressor and a second compressor. If the compressor is a constant speed compressor, the rotating speed of the compressor can be controlled in a starting and stopping mode.

In specific implementation, the controller can adjust the rotating speed of the first compressor or the opening degree of the second throttling element corresponding to the second heat exchanger according to the second comparison result when the first heat exchange system is not closed, so as to adjust the temperature of the coil of the second heat exchanger; of course, the controller can also adjust the rotation speed of the second compressor of the fourth heat exchanger or the opening degree of the fourth throttling element according to the second comparison result when the second heat exchange system is not closed, so as to adjust the temperature of the coil of the fourth heat exchanger.

For example, when the coil temperature of the second heat exchanger is greater than the first preset coil temperature, the coil temperature of the second heat exchanger cannot meet the cooling and dehumidifying requirements, and the coil temperature of the second heat exchanger can be reduced by increasing the rotating speed of the first compressor or reducing the opening degree of the second throttling element; of course, when the coil temperature of the second heat exchanger is too low, the coil temperature of the second heat exchanger may be raised by decreasing the rotation speed of the first compressor or increasing the opening degree of the second throttling element. Under different working modes, the coil temperature adjusting modes of the second heat exchanger and the fourth heat exchanger are the same, and are not described herein.

The step S404 is followed by:

step S501: and acquiring the air outlet temperature of the fresh air equipment.

It should be noted that the outlet air temperature is the temperature of the outlet air from the outlet end of the fresh air channel to the indoor. The outlet air temperature is the temperature that directly adjusts indoor environment.

In specific implementation, the controller can acquire the wind temperature through a temperature sensor arranged at the output end of the fresh air channel. The controller may further acquire a pre-reheating or post-reheating temperature when the new equipment is turned on, and use the pre-reheating or post-reheating temperature as the outlet air temperature.

Step S502: and when the outlet air temperature is lower than the target temperature and the second operation mode is a dehumidification reheating mode or a heating mode, adjusting the rotating speed of a second fan, the rotating speed of a second compressor or the opening degree of a throttling element so as to improve the outlet air temperature to be the target temperature.

Step S503: and when the air outlet temperature is lower than the target temperature and the second operation mode is the stop mode, adjusting the rotating speed of the first fan, the rotating speed of the first compressor or the opening degree of the second throttling element so as to improve the air outlet temperature to be the target temperature.

The preset target temperature is a target temperature in the room preset by the user. The third comparison result is a comparison result between the outlet air temperature and the preset target temperature. The third comparison result comprises a comparison result that the air outlet temperature is lower than or equal to the preset target temperature and a comparison result that the air outlet temperature is higher than the preset target temperature.

It should be understood that when the fresh air device is in the dehumidification and reheating mode, the controller may compare the outlet air temperature with a preset target temperature to determine whether the outlet air temperature is the same as the preset target temperature. Under the condition that the air outlet temperature needs to be adjusted by adjusting the rotating speed of the fan, when the second heat exchange system is in a normal working state, namely the second operation mode is a dehumidification reheating mode or a heating mode, the air outlet temperature can be adjusted by adjusting the rotating speed of the exhaust fan convenient to adjust; however, when the second heat exchange system is in the stop mode, the outlet air temperature can be adjusted only by adjusting the rotating speed of the outdoor fan located outdoors. Of course, if the adjustment can be made in other ways, a more convenient way can be selected.

It should be noted that, in this embodiment, the air conditioner includes an outdoor fan, an exhaust fan, and a fresh air fan. The first fan is an outdoor fan, the second fan is an exhaust fan, and the third fan is a fresh air fan. In this embodiment, the outdoor fan is disposed on the fifth heat exchanger, and the outdoor fan can adjust the fifth heat exchanger in the first heat exchange system; the exhaust fan and the sixth heat exchanger are both arranged in the exhaust channel, and the exhaust fan can adjust the sixth heat exchanger in the second heat exchange system.

In specific implementation, when the temperature of the outlet air is lower than or equal to a preset target temperature under the condition that the first heat exchange system operates alone, that is, the second heat exchange system is closed, the temperature of the inlet air is too low, and the outlet air can be heated by reducing the rotating speed of the outdoor fan, increasing the rotating speed of the first compressor or reducing the opening degree of the second throttling element; of course, when the wind temperature is higher than the preset target temperature, the opposite adjustment process is adopted, which is not described herein. When the rotating speed of the fan is adjusted, the rotating speed of the fan can be adjusted in a starting and stopping mode.

In addition, under the condition that the second heat exchange system normally operates, when the outlet air temperature is less than or equal to the preset target temperature, the rotating speed of the exhaust fan can be reduced, the rotating speed of the second compressor can be increased, or the opening degree of the fourth throttling element can be reduced to heat the outlet air; of course, when the wind temperature is higher than the preset target temperature, the opposite adjustment process is adopted, which is not described herein.

In the fourth embodiment, the operating state of the heat exchanger is adjusted by adjusting the parameters of the throttling element, the compressor and the fan, so that the first heat exchange system and the second heat exchange system are both provided with a heat exchange weapon in a condensation state in the fresh air channel, and the fresh air equipment can more accurately improve the air outlet temperature adjusting capacity of the fresh air equipment.

In addition, an embodiment of the present invention further provides a storage medium, where a fresh air device control program is stored on the storage medium, and the steps of the fresh air device control method described above are implemented when the fresh air device control program is executed by a processor. Since the storage medium may adopt the technical solutions of all the embodiments, at least the beneficial effects brought by the technical solutions of the embodiments are achieved, and are not described in detail herein.

Referring to fig. 7, fig. 7 is a block diagram of a control device of a fresh air device according to an embodiment of the present invention. The embodiment of the invention also provides a control device of the fresh air equipment.

In this embodiment, new trend equipment controlling means is used for controlling new trend equipment, and the concrete structure of this new trend equipment can refer to the aforesaid, and new trend equipment controlling means includes:

the temperature detection module 100 is used for acquiring the fresh air temperature of the fresh air equipment;

it should be noted that the fresh air temperature refers to the temperature of the fresh air input at the input end of the fresh air channel. Fresh air is input into the fresh air channel from the outdoor environment by a third fan in the fresh air channel. In specific implementation, the temperature of the fresh air can be collected through a temperature sensor arranged at the third fan.

The system comprises a mode determining module 200, a first heat exchange system and a second heat exchange system, wherein the mode determining module is used for determining a first operation mode of the first heat exchange system and a second operation mode of the second heat exchange system according to the fresh air temperature when the fresh air equipment is in a dehumidification and reheating mode;

The operation modes of the heat exchange system comprise a refrigeration operation mode and a heating operation mode, and the heat exchange system can be in a closed state when the heat exchange system does not work. The first operation mode and the second operation mode respectively refer to a target working mode of the first heat exchange system and a target working mode of the second heat exchange system when the fresh air equipment is in the dehumidification mode.

In the concrete implementation, when new trend equipment is in dehumidification reheat mode, can compare new trend temperature and the temperature value of setting for, divide into different temperature intervals with new trend temperature threshold value. When the fresh air temperature is in different temperature intervals, the first heat exchange system and the second heat exchange system are in different operation modes. For example, when the temperature of the fresh air is in a higher temperature range, the first heat exchange system and the second heat exchange system can be in a refrigeration mode at the same time, and dehumidification and reheating can be realized more quickly. Similarly, when the temperature of the fresh air is in a lower temperature interval, the first heat exchange system can be in a refrigeration mode for dehumidification, and the second heat exchange system can be in a heating mode, so that the temperature of the outlet air reaches the target temperature as soon as possible.

And the state adjusting module 300 is configured to drive the first heat exchange system according to the first operation mode, and drive the second heat exchange system according to the second operation mode, so as to dehumidify the fresh air.

In a specific implementation, the controller may adjust an operation parameter of the first throttling element, the second throttling element, or the first compressor in the first heat exchange system according to the first operation mode to adjust an operation state of the first heat exchanger and the second heat exchanger. The controller can also determine to adjust the operating parameters of the third throttling element, the fourth throttling element or the second compressor in the second heat exchange system according to the second operating mode, so as to adjust the working states of the third heat exchanger and the fourth heat exchanger.

Wherein the throttling element comprises first to fourth throttling elements. The first throttling element is used for adjusting refrigerants in the fifth heat exchanger and the first heat exchanger, and the second throttling element is used for adjusting refrigerants in the first heat exchanger and the second heat exchanger till now; the third throttling element is used for controlling the refrigerant between the sixth heat exchanger and the third heat exchanger, and the fourth throttling element is used for adjusting the refrigerant between the third heat exchanger and the fourth heat exchanger.

In a first embodiment, the fresh air device has a first and a second heat exchange system, the first heat exchange system includes at least one heat exchanger in the fresh air channel, the second heat exchange system includes at least one heat exchanger in the fresh air channel, and the fresh air channel includes at least three heat exchangers. The first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an exhaust channel; the fresh air temperature of the fresh air equipment is collected through the temperature detection module 100, the mode determination module 200 determines a first operation mode and a second operation mode corresponding to the first heat exchange system and the second heat exchange system according to the fresh air temperature, and then the state adjustment module 300 drives the corresponding first heat exchange system and the second heat exchange system according to the first operation mode and the second operation mode so as to dehumidify the fresh air and improve the air outlet temperature adjustment capacity of the fresh air equipment.

In an embodiment, the mode determining module 200 is further configured to determine that the target operation mode of the fresh air device is a dehumidification and reheating mode when the fresh air temperature is lower than a first preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that at least one of the first operation mode and the second operation mode is the dehumidification and reheat mode when the fresh air temperature is greater than or equal to a second preset target temperature and less than a first preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that the first operation mode is a dehumidification and reheat mode and the second operation mode is a stop mode when the fresh air temperature is greater than or equal to a third preset target temperature and less than a second preset target temperature.

In an embodiment, the mode determining module 200 is further configured to determine that the first operation mode is a stop mode when the fresh air temperature is greater than or equal to a fourth preset target temperature and less than a third preset target temperature, and the second operation mode is a dehumidification and reheat mode

In an embodiment, the mode determining module 200 is further configured to determine that the first heat exchange system is in a dehumidification reheating mode and the second heat exchange system is in a heating mode when the fresh air temperature is less than a fourth preset target temperature.

In an embodiment, the state adjusting module 300 is further configured to, when the first operation mode is a cooling mode, operate the first throttling element, operate the second throttling element, and implement a fresh air cooling effect by combining the first heat exchanger and the second heat exchanger; when the first operation mode is a dehumidification reheating mode, the first throttling element does not work, the second throttling element works, the second heat exchanger in the first heat exchange system is an evaporator, and the first heat exchanger is a condenser; when the second operation mode is a refrigeration mode, the third throttling element works, the fourth throttling element does not work, and the third heat exchanger and the fourth heat exchanger are combined to realize the fresh air cooling effect; when the second operation mode is a dehumidification reheating mode, the third throttling element does not work, the fourth throttling element works, the fourth heat exchanger in the second heat exchange system is an evaporator, and the third heat exchanger is a condenser.

In an embodiment, the temperature detecting module 100 is further configured to obtain a first coil temperature of the second heat exchanger when the first operation mode is a dehumidification and reheat mode; the state adjusting module 300 is further configured to adjust a rotation speed of the first compressor or an opening degree of the second throttling element when the first coil temperature is greater than a first preset coil temperature, so that the first coil temperature is less than or equal to the first preset coil temperature; when the second operation mode is a dehumidification reheating mode, acquiring a second coil temperature of the fourth heat exchanger; and when the temperature of the second coil pipe is greater than the second preset coil pipe temperature, adjusting the rotating speed of a second compressor or the opening degree of a fourth throttling element so that the temperature of the second coil pipe is less than or equal to the second preset coil pipe temperature.

In an embodiment, the temperature detection module 100 is further configured to obtain an air outlet temperature of the fresh air device; the state adjusting module 300 is further configured to adjust a rotation speed of a second fan, a rotation speed of a second compressor, or an opening degree of a throttling element when the outlet air temperature is less than the target temperature and the second operation mode is a dehumidification reheating mode or a heating mode, so as to increase the outlet air temperature to be the target temperature; and when the outlet air temperature is lower than the target temperature and the second operation mode is the stop mode, adjusting the rotating speed of the first fan, the rotating speed of the first compressor or the opening degree of the second throttling element so as to improve the outlet air temperature to be the target temperature.

Other embodiments or specific implementation manners of the fresh air equipment control device according to the present invention may refer to the above method embodiments, so that at least all the advantages brought by the technical solutions of the above embodiments are provided, and no further description is provided herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order, but rather the words first, second, third, etc. are to be interpreted as names.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g., a Read Only Memory (ROM)/Random Access Memory (RAM), a magnetic disk, an optical disk), and includes several instructions for enabling a terminal device (which may be a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A fresh air equipment control method is characterized in that fresh air equipment comprises a first heat exchange system and a second heat exchange system, wherein the first heat exchange system is used for exchanging heat between a fresh air channel and an outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and an air exhaust channel;

the fresh air equipment control method comprises the following steps:

acquiring the fresh air temperature of fresh air equipment;

2. The fresh air device control method of claim 1, wherein determining the first operating mode of the first heat exchange system and the second operating mode of the second heat exchange system according to the fresh air temperature comprises:

3. The fresh air device control method according to claim 2, wherein at least one heat exchanger of the first heat exchange system is disposed in a fresh air channel, at least one heat exchanger of the second heat exchange system is disposed in a fresh air channel, at least three heat exchangers are disposed in the fresh air channel, and the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the temperature of the fresh air includes:

4. The fresh air device control method according to claim 3, wherein at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, and the determining of the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further includes:

5. The fresh air device control method of claim 4, wherein at least two heat exchangers of the first heat exchange system are disposed in a fresh air channel, and the determining of the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further comprises:

6. The fresh air device control method according to claim 5, wherein the determining the first operation mode of the first heat exchange system and the second operation mode of the second heat exchange system according to the fresh air temperature further comprises:

7. The fresh air device control method according to any one of claims 1 to 6, wherein the fresh air device includes: the first heat exchange system comprises a first compressor, a first four-way valve, a fifth heat exchanger, a first throttling element, a first heat exchanger, a second throttling element and a second heat exchanger which are connected in sequence; the second heat exchange system comprises a second compressor, a second four-way valve, a sixth heat exchanger, a third throttling element, a third heat exchanger, a fourth throttling element and a fourth heat exchanger which are sequentially connected;

the fifth heat exchanger is arranged in the external environment;

8. The method for controlling the fresh air device according to claim 7, wherein after driving the first heat exchange system according to the first operation mode and driving the second heat exchange system according to the second operation mode to dehumidify the fresh air, the method comprises:

when the first operation mode is a dehumidification reheating mode, acquiring a first coil temperature of the second heat exchanger; and the number of the first and second groups,

9. The method for controlling the fresh air device according to claim 8, wherein the adjusting the rotation speed of the second compressor or the opening degree of the fourth throttling element to make the second coil temperature be the second preset coil temperature comprises:

acquiring the air outlet temperature of the fresh air equipment;

10. The utility model provides a new trend equipment controlling means which characterized in that, new trend equipment controlling means includes:

11. The utility model provides a new trend equipment, its characterized in that, new trend equipment includes: the fresh air equipment control method comprises a first heat exchange system, a second heat exchange system, a memory, a processor and a fresh air equipment control program which is stored on the memory and can run on the processor, wherein when the fresh air equipment control program is executed by the processor, the fresh air equipment control method is realized according to any one of claims 1 to 9.

12. A storage medium, wherein a fresh air device control program is stored on the storage medium, and when executed by a processor, the fresh air device control program implements the fresh air device control method according to any one of claims 1 to 9.