WO2020113938A1

WO2020113938A1 - Air conditioner system, air conditioner control method and apparatus, computer-readable storage medium

Info

Publication number: WO2020113938A1
Application number: PCT/CN2019/091706
Authority: WO
Inventors: 刘华; 孔环灵; 尤文超; 杜辉; 杨智峰; 陈博强; 杨瑞; 邓晶; 林国游; 邵元浩; 石祥; 刘小康
Original assignee: 珠海格力电器股份有限公司
Priority date: 2018-12-06
Filing date: 2019-06-18
Publication date: 2020-06-11
Also published as: CN109341156B; CN109341156A

Abstract

An air conditioner system (10), an air conditioner control method and an apparatus (90), as well as a computer-readable storage medium. The air conditioner system (10) comprising a compressor (100), an indoor heat exchanger (110), a first throttling component (111) and an outdoor heat exchanger (120), connected by means of a pipeline, forming a first loop; a heat reservoir (130) connected in parallel with the indoor heat exchanger (110). The compressor (100), the heat reservoir (130) and the outdoor heat exchanger (120) being connected by means of a pipeline, forming a second loop. The air conditioner control method comprises, in a defrost mode, controlling at least some high-temperature refrigerant flowing out of the compressor (100) to flow into the outdoor heat exchanger (120), heating the outdoor heat exchanger (120) so as to realize defrosting, then flowing into the compressor (100) via the heat reservoir (130) after cooling to a liquid state. The air conditioner control apparatus (90) executes the air conditioner control method, and a computer program stored on the computer-readable storage medium implements the air conditioner control method. The present air conditioner system and method can solve the problem of energy consumption, realizing energy-saving and environmental protection.

Description

Air conditioning system, air conditioning control method and device, and computer readable storage medium

Cross-reference of related applications

This application is based on the application with CN application number 201811486676.0 and the application date is December 6, 2018, and claims its priority. The disclosure content of this CN application is hereby incorporated into this application as a whole.

Technical field

The present disclosure relates to the technical field of air conditioning, and in particular, to an air conditioning system, an air conditioning control method and device, and a computer-readable storage medium.

Background technique

The air-conditioning system of the related art generally has high energy consumption problems such as dehumidification energy consumption, heating energy consumption, defrosting energy consumption, or fresh air energy consumption. This will result in a waste of resources.

Summary of the invention

According to an aspect of an embodiment of the present disclosure, there is provided an air conditioning system, including: a compressor connected by a pipeline to form a first circuit, an indoor heat exchanger, a first throttle member, and an outdoor heat exchanger; a heat accumulator, In parallel with the indoor heat exchanger, wherein the compressor, the heat accumulator and the outdoor heat exchanger are connected by a pipeline to form a second circuit.

In some embodiments, the air conditioning system further includes: a second throttling component disposed on the pipeline between the first throttling component and the outdoor heat exchanger, and included in the first loop and In the second loop.

In some embodiments, the air conditioning system further includes: a first control valve disposed on the pipeline between the heat accumulator and the compressor and included in the second circuit.

In some embodiments, the air-conditioning system further includes: a third throttle component disposed on the pipeline between the heat accumulator and the second throttle component and included in the second circuit.

In some embodiments, the heat accumulator includes multiple sets of heat storage modules connected in parallel.

In some embodiments, the air conditioning system further includes: a heat recovery heat exchanger connected in parallel with the outdoor heat exchanger, wherein the compressor, the heat recovery heat exchanger, and the first throttle component A third circuit is formed by connecting with the indoor heat exchanger through a pipeline.

In some embodiments, the heat recovery heat exchanger is connected to a pipeline between the indoor heat exchanger and the first throttle member through a pipeline provided with a check valve.

In some embodiments, the air conditioning system further includes: a second control valve disposed on the pipeline between the heat recovery heat exchanger and the compressor and included in the third circuit.

In some embodiments, the air conditioning system further includes: a fourth throttling component, disposed on the pipeline between the heat recovery heat exchanger and the first throttling component, and included in the third circuit in.

In some embodiments, the air conditioning system further includes a directional valve including a first valve port connected to the inlet of the compressor and a second valve port connected to the outlet of the compressor A third valve port connected to the indoor heat exchanger and the heat accumulator, and a fourth valve port connected to the outdoor heat exchanger and the heat recovery heat exchanger.

In some embodiments, the air conditioning system further includes: a humidifier disposed near the heat recovery heat exchanger.

In some embodiments, the air conditioning system further includes: a first filter, which is provided at the air inlet of the air conditioning system and is used for performing first filtering of air.

In some embodiments, the air conditioning system further includes: a fresh air subsystem, which is disposed near the air inlet of the air conditioning system.

In some embodiments, the fresh air subsystem includes: a full heat exchanger for making the outdoor fresh air temperature close to the indoor temperature through heat exchange.

In some embodiments, the fresh air subsystem includes: a second filter for second filtering air.

According to another aspect of an embodiment of the present disclosure, there is provided an air conditioner control method, including: in a defrosting mode, controlling at least part of the high-temperature refrigerant flowing out of the compressor to an outdoor heat exchanger, and performing an operation on the outdoor heat exchanger Heating to achieve defrosting, condensing into a liquid state and flowing into the compressor through a regenerator.

In some embodiments, a portion of the high-temperature refrigerant flowing out of the compressor flows to the outdoor heat exchanger, and the outdoor heat exchanger is heated to achieve defrosting, condensed into a liquid state, and then flows into the compressor through the regenerator ; Another part of the high-temperature refrigerant flowing out of the compressor flows to the heat recovery heat exchanger, heating the heat recovery heat exchanger to achieve heating, condensing into a liquid state and flowing into the compressor through the heat accumulator.

In some embodiments, the air conditioning control method further includes: controlling the humidifier disposed near the heat recovery heat exchanger to turn on, and passing another portion of the high temperature refrigerant to the heat recovery heat exchanger from the humidifier The water is heated to achieve humidification.

In some embodiments, the flow rate of another part of the high-temperature refrigerant to the heat recovery heat exchanger is controlled by the throttle member.

In some embodiments, the air conditioning control method further includes: in the heating mode, controlling a part of the high-temperature refrigerant flowing out of the compressor to the indoor heat exchanger to heat the indoor heat exchanger, and another part of the high-temperature refrigerant flowing to the The heat accumulator heats the heat accumulator, condenses to a liquid state, and flows into the compressor through the outdoor heat exchanger.

In some embodiments, the air conditioning control method further includes: controlling the fresh air subsystem to turn on to filter air.

According to still another aspect of the embodiments of the present disclosure, there is provided an air conditioner control device, including: a memory; and a processor coupled to the memory, the processor configured to be based on instructions stored in the memory, Perform the air conditioning control method as described in any of the foregoing embodiments.

According to still another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the air-conditioning control method as described in any of the foregoing embodiments.

Other features and advantages of the present disclosure will become clear through the following detailed description of exemplary embodiments of the present disclosure with reference to the drawings.

BRIEF DESCRIPTION

The drawings constituting a part of the description describe the embodiments of the present disclosure, and together with the description are used to explain the principles of the present disclosure.

Referring to the drawings, the present disclosure can be more clearly understood from the following detailed description, in which:

FIG. 1A is a schematic diagram showing the structure of an air conditioning system according to some embodiments of the present disclosure;

FIG. 1B is a schematic structural diagram illustrating an air conditioning system according to other embodiments of the present disclosure;

FIG. 1C is a schematic diagram showing the structure of an air conditioning system according to still other embodiments of the present disclosure;

2A is a schematic diagram showing the structure of an indoor unit of an air conditioning system according to some embodiments of the present disclosure;

2B is a side view of the structure shown in FIG. 2A;

3 is a schematic diagram showing the structure of a fresh air subsystem according to some embodiments of the present disclosure;

4 is a schematic diagram showing the structure of a heat accumulator according to some embodiments of the present disclosure;

5 is a schematic diagram showing the structure of a humidifier according to some embodiments of the present disclosure;

6A is a schematic diagram showing the principle of the defrosting mode of the air conditioning system according to some embodiments of the present disclosure;

6B is a schematic diagram illustrating the defrosting mode of the air conditioning system according to other embodiments of the present disclosure;

7A is a schematic diagram illustrating the heating mode of the air conditioning system according to some embodiments of the present disclosure;

7B is a schematic diagram illustrating the heating mode of the air conditioning system according to other embodiments of the present disclosure;

7C is a schematic diagram illustrating the heating mode of the air-conditioning system according to still other embodiments of the present disclosure;

8A is a schematic diagram illustrating the cooling mode of the air conditioning system according to some embodiments of the present disclosure;

8B is a schematic diagram illustrating the cooling mode of the air conditioning system according to some other embodiments of the present disclosure;

9 is a block diagram illustrating an air-conditioning control device according to some embodiments of the present disclosure;

FIG. 10 is a block diagram illustrating a computer system for implementing some embodiments of the present disclosure.

It should be understood that the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals indicate the same or similar components.

detailed description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the drawings. The description of the exemplary embodiments is merely illustrative, and in no way serves as any limitation to the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These examples are provided to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that the relative arrangement of components and steps set forth in these embodiments should be interpreted as exemplary only, and not as limitations, unless specifically stated otherwise.

All terms (including technical or scientific terms) used in the present disclosure have the same meaning as understood by those of ordinary skill in the art to which the present disclosure belongs, unless specifically defined otherwise. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having meanings consistent with their meanings in the context of related technologies, and should not be interpreted using idealized or extremely formal meanings unless explicitly stated here Defined like this.

Techniques, methods and equipment known to those of ordinary skill in the related art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the specification.

In view of the problem of waste of resources in the related art, the present disclosure proposes a solution that can solve the energy consumption problem of the air conditioning system and realize energy conservation and environmental protection.

FIG. 1A is a schematic diagram showing the structure of an air conditioning system according to some embodiments of the present disclosure.

As shown in FIG. 1A, the air-conditioning system 10 includes a compressor 100 connected by a pipeline to form a first circuit, an indoor heat exchanger 110, a first throttle member 111, and an outdoor heat exchanger 120. The first throttling member 111 is used for throttling, depressurizing and adjusting the flow rate of the refrigerant entering and leaving the indoor heat exchanger 110. The first throttle member 111 is, for example, an electronic expansion valve.

In some embodiments, the second throttle component 121 is also included in the first circuit. The second throttle member 121 is provided on the pipeline between the first throttle member 111 and the outdoor heat exchanger 120. The second throttle member 121 is used to throttle the pressure of the refrigerant entering and leaving the outdoor heat exchanger 120 and adjust the flow rate. The second throttle member 121 is, for example, an electronic expansion valve.

In other embodiments, the first circuit further includes a directional valve 101. The reversing valve 101 includes a first valve port connected to the inlet of the compressor 100, a second valve port connected to the outlet of the compressor 100, a third valve port connected to the indoor heat exchanger 110 and the heat accumulator 130, and The fourth valve port connected to the outdoor heat exchanger 120. In the cooling state, the first valve port of the directional valve communicates with the third valve port, and the second valve port communicates with the fourth valve port. In the heating state, the first valve port of the directional valve communicates with the fourth valve port, and the second valve port communicates with the third valve port. The directional valve 101 is, for example, a four-way valve.

The air conditioning system 10 also includes a heat accumulator 130. As shown in FIG. 1A, the heat accumulator 130 is connected in parallel with the indoor heat exchanger 110. The compressor 100, the heat accumulator 130, and the outdoor heat exchanger 120 are connected by a pipeline to form a second circuit. As can be seen from FIG. 1A, the directional valve 101 and the second throttle member 121 are also located in the second circuit.

In some embodiments, a third throttle component 131 is also included in the second circuit. The third throttle member 131 is provided on the pipeline between the second throttle member 121 and the heat accumulator 130. The third throttle member 131 is used to throttle the pressure of the refrigerant entering and leaving the heat accumulator 130 and adjust the flow rate. The third throttle member 131 is, for example, an electronic expansion valve.

As shown in FIG. 1A, the second circuit further includes a first control valve 132. The first control valve 132 is provided on the pipeline between the heat accumulator 130 and the compressor 100. That is, the heat accumulator 130 is connected to the pipeline between the compressor 100 and the indoor heat exchanger 110 through the pipeline provided with the first control valve 132. The first control valve 132 is used to control the refrigerant in and out of the regenerator 130, thereby controlling the connection or disconnection of the second circuit. The first control valve 132 is, for example, a solenoid valve.

In some embodiments, the air conditioning system 10 also includes a heat recovery heat exchanger 140. As shown in FIG. 1A, the heat recovery heat exchanger 140 is connected in parallel with the outdoor heat exchanger 120. The compressor 100, the heat recovery heat exchanger 140, the first throttle member 111, and the indoor heat exchanger 110 are connected by a pipeline to form a third circuit. As can be seen from FIG. 1A, the directional valve 101 is also located in the third circuit.

As shown in FIG. 1A, the heat recovery heat exchanger 140 is connected to the pipeline between the indoor heat exchanger 110 and the first throttle member 111 through a pipeline provided with a check valve 143. The one-way valve 143 is used to prevent the refrigerant from being stored in the heat recovery heat exchanger 140 when the heat recovery heat exchanger 140 is closed. The front end of the one-way valve 143 has a capillary tube, which can be designed to have a small pipe diameter and a large length at the front end to allow the refrigerant to be discharged from the heat recovery heat exchanger 140. The amount of refrigerant bypassing the check valve 143 is small. The influence of the one-way valve 143 on heat exchange performance is negligible.

The third circuit may further include a second control valve 142. The second control valve 142 is provided on the pipeline between the heat recovery heat exchanger 140 and the reversing valve 101. The second control valve 142 is connected to the second port of the directional valve 101, and the outdoor heat exchanger 120 is connected to the fourth port of the directional valve 101.

A fourth throttle component 141 may also be included in the third circuit. The fourth throttle member 141 is provided on the pipeline between the heat recovery heat exchanger 140 and the first throttle member 111. It can also be said that the fourth throttle member 141 is provided on the pipeline between the heat recovery heat exchanger 140 and the second throttle member 121, or between the heat recovery heat exchanger 140 and the third throttle member 131 On the pipeline. The fourth throttling member 141 is used for throttling, depressurizing and adjusting the flow rate of the refrigerant entering and exiting the heat recovery heat exchanger 140. The fourth throttle member 141 is, for example, an electronic expansion valve.

As shown in FIG. 1A, the indoor heat exchanger 110, the heat accumulator 130, and the heat recovery heat exchanger 140 all belong to the indoor unit and are located on the right side of the line AB; and the compressor 100 and the outdoor heat exchanger 120 belong to the outdoor unit and are located at Left side of line AB. As shown in FIG. 1A, the indoor unit may further include an indoor fan 150, a humidifier 170, and an electric heater 180. The outdoor unit may further include an outdoor fan 160.

FIG. 1B is a schematic diagram showing the structure of an air conditioning system according to other embodiments of the present disclosure. The difference between FIG. 1B and FIG. 1A is that the heat accumulator 130' is located outdoors and belongs to an outdoor unit. Only the differences between FIG. 1B and FIG. 1A will be described below, and the similarities will not be repeated.

As shown in FIG. 1B, the throttle member 131 ′ and the control valve 132 ′ corresponding to the heat accumulator 130 ′ (for example, connected by a pipeline) are also located outdoors. As mentioned above, the throttling member 131' is used for throttling and reducing the flow rate of the refrigerant entering and exiting the heat accumulator 130', for example, an electronic expansion valve. The control valve 132' is used to control the refrigerant in and out of the regenerator 130', and is, for example, a solenoid valve.

FIG. 1C is a schematic diagram showing the structure of an air conditioning system according to still other embodiments of the present disclosure. 1C differs from FIG. 1A in that it includes a plurality of heat accumulators 130 connected in parallel. Only the differences between FIG. 1C and FIG. 1A will be described below, and the similarities will not be repeated.

As shown in FIG. 1C, multiple heat accumulators 130 are connected in parallel between the throttle member 131 and the control valve 132. As described above, the throttling member 131 is used for throttling pressure reduction and flow adjustment of the refrigerant entering and exiting the plurality of heat accumulators 130, for example, an electronic expansion valve. The control valve 132 is used to control the refrigerant in and out of the plurality of heat accumulators 130 and is, for example, a solenoid valve.

FIG. 2A is a schematic diagram illustrating an indoor unit of an air conditioning system according to some embodiments of the present disclosure. 2B is a side view of the structure shown in FIG. 2A. The structure of the air-conditioning system 20 will be described below with reference to FIGS. 2A and 2B.

As shown in FIG. 2A, the air conditioning system 20 includes a fresh air subsystem 210, a filter 220, a heat accumulator 230, an air inlet 250, and an air outlet 260. As shown in FIG. 2B, the air conditioning system 20 further includes a heat exchanger 240, a humidifier 270, and a heat exchanger 280.

As shown in FIGS. 2A and 2B, when the air conditioning system 20 is in operation, air enters the heat exchanger 280 from the air inlet 250 through the filter 220 for heat exchange, and the exchanged air is discharged from the air outlet 260.

As shown in FIG. 2A, the fresh air subsystem 210 is disposed near the air inlet 250 of the air conditioning system. When the indoor air is dirty, the fresh air subsystem 210 can be turned on for indoor air replacement to achieve the function of purifying indoor air.

The fresh air subsystem 210 may have the structure shown in FIG. 3. FIG. 3 shows a schematic structural diagram of a fresh air subsystem according to some embodiments of the present disclosure. As shown in FIG. 3, the fresh air subsystem 210 includes a total heat exchanger 2101 and a filter 2102. The total heat exchanger 2101 is used to make the outdoor fresh air temperature close to the indoor temperature through heat exchange. This can reduce or even avoid the extra energy consumption caused by the temperature difference between indoor and outdoor. The filter 2102 is used to filter the air introduced from outside.

The filter 220 is provided at the air inlet 250 of the air conditioning system. In other words, the filter 220 is disposed near the fresh air subsystem 210 for further filtering air.

As shown in FIG. 2A, the heat accumulator 230 is located at the bottom of the air conditioning system. In the heating mode, the heat accumulator 230 can store part of the heat. When the outdoor heat exchanger reaches the defrosting temperature point, the heat accumulator 230 may function as an indoor heat exchanger. That is, the indoor heat exchanger can be turned off, and the heat stored in the heat accumulator 230 can be provided to the outdoor heat exchanger for defrosting use, thereby achieving energy saving and environmental protection.

The heat accumulator 230 may have a structure as shown in FIG. 4. FIG. 4 shows a schematic structural diagram of a heat accumulator according to some embodiments of the present disclosure. As shown in FIG. 4, the heat accumulator 230 includes a heat storage member 2301, a fixed plate 2302, and a support plate 2303. The heat storage member 2301 includes a heat storage material. The heat storage member 2301 is fixed to the fixed plate 2302 and the support plate 2303.

The heat exchanger 240 in FIG. 2B can perform heat recovery, and the heat exchanger 240 can replace the electric heater to achieve the effect of energy saving and environmental protection. When the air conditioning system enters the dehumidification mode, the heat exchanger 240 can also compensate for the decrease in temperature to achieve the effect of constant temperature dehumidification.

As shown in FIG. 2B, the humidifier 270 is located near the heat exchanger 240. When humidification is required indoors, the humidifier 270 sprays water on the heat exchanger 240 to evaporate the water mist to achieve the function of humidifying the indoor air.

The humidifier 270 has a structure as shown in FIG. 5, for example. FIG. 5 shows a schematic structural view of a humidifier according to some embodiments of the present disclosure. As shown in FIG. 5, the humidifier 270 includes a humidifying member 2701 and a humidifying nozzle 2702. The humidifier 270 is located near the heat exchanger 280, for example, fixed to the heat exchanger 280. The humidifying component 2701 includes the waterway pipeline of the humidifier 270, the water valve, and related fixing devices. When humidification is required, the water can be converted into water mist after passing through the humidification nozzle 2702.

FIG. 6A is a schematic diagram illustrating a defrosting mode of an air conditioning system according to some embodiments of the present disclosure.

In this defrost mode, the compressor 100 is turned on, the outdoor fan 160 is turned off, the indoor fan 150 is turned on, the reversing valve 101 is in a cooling state, the first control valve 132 is turned on, the second control valve 142 is turned off, and the first throttle member 111 Closed, the maximum opening of the second throttle member 121, the third throttle member 131 is adjusted according to demand, the fourth throttle member 141 is closed, and the humidifier 170 is closed. In this way, the high-temperature refrigerant (such as refrigerant) flowing from the compressor 100 can be controlled to flow to the outdoor heat exchanger 120, and the outdoor heat exchanger 120 is heated to achieve defrosting, condensed into a liquid state, and then flows into the compressor through the regenerator 130 100. That is, the refrigerant flows through the second circuit.

As shown in FIG. 6A, the low-temperature and low-pressure refrigerant vapor (such as a low-temperature refrigerant) absorbed from the indoor unit returns to the suction side of the compressor 100 through the reversing valve 101 in the cooled state, and is compressed by the compressor 100 to a high temperature and high pressure Refrigerant gas (such as high temperature refrigerant). Since the second control valve 142 is closed, the refrigerant passes through the reversing valve 101 again, and then directly flows into the outdoor heat exchanger 120. Since the outdoor fan 160 is turned off, the refrigerant will directly heat the outdoor heat exchanger 120 to achieve defrosting, while condensing itself into a liquid state. Since the second throttle member 121 has the maximum opening degree, the refrigerant will directly flow into the indoor unit side. Since the first throttle member 111 is closed, the liquid refrigerant will be throttled and decompressed directly through the third throttle member 131 to flow into the heat accumulator 130. The refrigerant evaporates and absorbs heat in the heat accumulator 130, and finally returns to the suction side of the compressor 100 through the reversing valve 101 to complete a refrigeration cycle.

Repeatedly in this way, the heat exchange with indoor air can be achieved within the defrosting cycle, but the defrosting function is completed. That is, the energy storage of the heat accumulator 130 is used to reduce or even avoid defrosting energy consumption, thereby achieving energy saving and environmental protection.

According to different requirements, the opening degree of the third throttle member 131 (for example, an electronic expansion valve) can be adjusted. In some embodiments, when the temperature increase demand is greater, the electric heater 180 may also be turned on.

6B is a schematic diagram illustrating the defrosting mode of the air conditioning system according to other embodiments of the present disclosure.

In this defrosting mode, the compressor 100 is turned on, the outdoor fan 160 is turned off, the indoor fan 150 is turned on, the reversing valve 101 is in a cooling state, the first control valve 132 is turned on, the second control valve 142 is turned on, and the first throttle member 111 Closed, the maximum opening of the second throttle member 121, the third throttle member 131 is adjusted according to demand, the fourth throttle member 141 is adjusted according to demand, and the humidifier 170 is closed.

6B is different from FIG. 6A in that the second control valve 142 is opened and the fourth throttle member 141 is adjusted according to demand. In FIG. 6A, since the second control valve 142 is closed, the high-temperature refrigerant flowing out of the compressor 100 does not flow to the heat recovery heat exchanger 140, but all flows to the outdoor heat exchanger 120. In FIG. 6B, since the second control valve 142 is opened, a part of the high-temperature refrigerant flowing out of the compressor 100 flows to the outdoor heat exchanger 120, and another part flows to the heat recovery heat exchanger 140. A portion of the high-temperature refrigerant flowing to the outdoor heat exchanger 120 heats the outdoor heat exchanger 120 to achieve defrosting, condenses into a liquid state, and flows into the compressor 100 through the regenerator 130. Another part of the high-temperature refrigerant flowing to the heat recovery heat exchanger 140 heats the heat recovery heat exchanger 140 to achieve heating, condenses into a liquid state, and flows into the compressor 100 through the heat accumulator 130.

As shown in FIG. 6B, the low-temperature and low-pressure refrigerant vapor absorbed from the indoor unit returns to the suction side of the compressor 100 through the reversing valve 101 in the cooled state, and is compressed by the compressor 100 into a high-temperature and high-pressure refrigerant gas. Since the second control valve 142 is opened, the refrigerant will be divided into two paths.

After passing through the reversing valve 101 again, the first-path refrigerant directly flows into the outdoor heat exchanger 120. Since the outdoor fan 160 is turned off, the first-path refrigerant will directly heat the outdoor heat exchanger 120 to achieve defrosting, while condensing itself into a liquid state. Since the second throttle member 121 has the maximum opening degree, the refrigerant will directly flow into the indoor unit side.

The second-path refrigerant flows into the heat recovery heat exchanger 140 through the second control valve 142. The second refrigerant can be heated by the return air in the heat recovery heat exchanger 140 to maintain the necessary heating capacity.

Since the first throttle member 111 is closed, the liquid refrigerant will be throttled and decompressed directly through the third throttle member 131 to flow into the heat accumulator 130. The refrigerant evaporates and absorbs heat in the heat accumulator 130, and finally returns to the suction side of the compressor 100 through the reversing valve 101 to complete a refrigeration cycle.

Repeatedly in this way, the defrosting can be realized in the defrosting cycle while achieving a certain amount of heating function. That is, during the defrosting cycle, the heat pump heat recovery technology (that is, the use of heat recovery heat exchangers) is used to replace the pure electric heating system to reduce or even avoid additional heating energy consumption, thereby achieving energy saving and environmental protection. In addition, while defrosting while preserving a certain amount of heating, it can also improve comfort.

According to different requirements, the opening of the fourth throttle member 141 (for example, an electronic expansion valve) can be adjusted. In some embodiments, the electric heater 180 can also be turned on when the heating demand is large.

When there is a demand for humidification during the defrosting cycle, the humidifier can also be opened. As shown in FIG. 6B, the second-path refrigerant in the heat recovery heat exchanger 140 realizes the heating of the atomized water sprayed from the humidifier 170, which increases the evaporation efficiency of the atomized water and compensates for the evaporation and absorption of the atomized water. The cooling effect of heat on the return air.

7A is a schematic diagram illustrating the heating mode of the air conditioning system according to some embodiments of the present disclosure.

In this heating mode, the compressor 100 is turned on, the outdoor fan 160 is turned on, the indoor fan 150 is turned on, the reversing valve 101 is in the heating state, the first control valve 132 is turned on, the second control valve 142 is turned off, and the first throttle part 111 is the maximum opening degree, the second throttle member 121 is adjusted according to demand, the third throttle member 131 is closed after being full, the fourth throttle member 141 is closed, and the humidifier 170 is closed. In this way, a part of the high-temperature refrigerant flowing out of the compressor 100 can be controlled to flow to the indoor heat exchanger 110 to heat the indoor heat exchanger 110, and another part of the high-temperature refrigerant can flow to the heat accumulator 130 to heat the heat accumulator 130. After condensing to liquid state respectively, they flow into the compressor 100 through the outdoor heat exchanger 120. That is, the refrigerant flows through the first circuit and the second circuit.

As shown in FIG. 7A, the low-temperature and low-pressure refrigerant vapor absorbed from the outdoor unit returns to the suction side of the compressor 100 through the reversing valve 101 in the heating state, and is compressed by the compressor 100 into a high-temperature and high-pressure refrigerant gas. Since the second control valve 142 is closed, the refrigerant passes through the reversing valve 101 again and directly flows into the indoor side. Since the first control valve 132 is opened and the third throttle member 131 is at its maximum opening, the refrigerant will be divided into two paths.

The first refrigerant flows into the indoor heat exchanger 110, heats the indoor air, and condenses into a liquid by heat exchange. The second-path refrigerant flows into the heat accumulator 130 through the first control valve 132, heats the heat accumulator material of the heat accumulator 130, and condenses to a liquid state while releasing its own heat.

After the first and second liquid refrigerants merge, they are throttled and decompressed by the second throttle member 121, and then flow into the outdoor heat exchanger 120 to evaporate and absorb heat. The finally evaporated low-temperature and low-pressure refrigerant vapor returns to the suction side of the compressor 100 through the reversing valve 101 to complete a heating cycle.

It is so repeated that the heating function of indoor air is realized. After the heat accumulator 130 is full of heat, the third throttle member 131 can be closed, thereby reducing or even avoiding system abnormalities caused by the convergence of the refrigerant that cannot continue to condense in the second refrigerant and the first refrigerant. In the heating mode, the heat accumulator 130 stores heat, and the stored heat can be used for defrosting, thereby reducing or even avoiding additional defrosting energy consumption.

According to different requirements, the opening degree of the second throttle member 121 (for example, an electronic expansion valve) can be adjusted. In some embodiments, the electric heater 180 can also be turned on when the heating demand is large.

In the above embodiment, a heat accumulator is used to store part of the heat energy generated in the heating mode of the air conditioning system, and the stored heat energy is used for defrosting when defrosting is needed, thereby solving the problem of defrosting energy consumption.

7B is a schematic diagram illustrating the heating mode of the air conditioning system according to other embodiments of the present disclosure.

In this heating mode, the compressor 100 is turned on, the outdoor fan 160 is turned on, the indoor fan 150 is turned on, the reversing valve 101 is in the heating state, the first control valve 132 is turned off, the second control valve 142 is turned off, and the first throttle part 111 maximum opening degree, the second throttle member 121 is adjusted according to demand, the third throttle member 131 is closed, the fourth throttle member 141 is closed, and the humidifier 170 is closed.

7B is different from FIG. 7A in that the first control valve 132 is closed and the third throttle member 131 is closed, that is, the heat accumulator 130 does not operate. In FIG. 7A, the refrigerant flows through the first circuit and the second circuit; while in FIG. 7B, the refrigerant flows only through the first circuit.

7C is a schematic diagram illustrating the heating mode of the air-conditioning system according to still other embodiments of the present disclosure.

In this heating mode, the compressor 100 is turned on, the outdoor fan 160 is turned on, the indoor fan 150 is turned on, the reversing valve 101 is in the heating state, the first control valve 132 is turned off, the second control valve 142 is turned on, and the first throttle part 111 maximum opening degree, the second throttle member 121 is adjusted according to demand, the third throttle member 131 is closed, the fourth throttle member 141 is adjusted according to demand, and the humidifier 170 is turned on.

The difference between FIG. 7C and FIG. 7A is that: the first control valve 132 is closed, the third throttle component 131 is closed, that is, the heat accumulator 130 does not work; but the second control valve 142 is opened, and the fourth throttle component 141 is on demand The regulator and the humidifier 170 are turned on, that is, the heat recovery heat exchanger 140 works, and the humidifier 170 works.

As shown in FIG. 7C, the low-temperature and low-pressure refrigerant vapor absorbed from the outdoor unit returns to the suction side of the compressor 100 through the reversing valve 101 in the heating state, and is compressed by the compressor 100 into a high-temperature and high-pressure refrigerant gas. Since the second control valve 142 is opened, the refrigerant will be divided into two paths.

The first refrigerant flows into the indoor heat exchanger 110, heats the indoor air, and condenses into a liquid by heat exchange. The second refrigerant passes through the second control valve 142 and flows into the heat recovery heat exchanger 140 while condensing into a liquid state. Since the humidifier 170 is turned on, the second refrigerant is used to heat the atomized water sprayed from the humidifier 170 in the heat recovery heat exchanger 140, which increases the evaporation efficiency of the atomized water and compensates for the evaporation and absorption of the atomized water. The cooling effect of heat on the return air.

Since the third throttle member 131 is closed, the first and second channels of liquid refrigerant merge, and then the second throttle member 121 throttles and reduces the pressure, and then flows into the outdoor heat exchanger 120 to evaporate and absorb heat. The finally evaporated low-temperature and low-pressure refrigerant vapor returns to the suction side of the compressor 100 through the reversing valve 101 to complete a heating cycle.

It is so repeated that the function of heating and humidifying indoor air is realized. According to different requirements, the opening of the fourth throttle member 141 (for example, an electronic expansion valve) can be adjusted.

FIG. 8A is a schematic diagram illustrating a cooling mode of an air conditioning system according to some embodiments of the present disclosure.

In this cooling mode, the compressor 100 is turned on, the outdoor fan 160 is turned on, the indoor fan 150 is turned on, the reversing valve 101 is in a cooling state, the first control valve 132 is turned off, the second control valve 142 is turned on, and the first throttle member 111 is based on Demand adjustment, the maximum opening of the second throttle member 121, the third throttle member 131 is closed, and the fourth throttle member 141 is adjusted according to demand. That is, the refrigerant flows through the first circuit and the third circuit.

As shown in FIG. 8A, the low-temperature and low-pressure refrigerant vapor absorbed from the indoor unit returns to the suction side of the compressor 100 through the reversing valve 101 in the cooled state, and is compressed by the compressor 100 into a high-temperature and high-pressure refrigerant gas. Since the second control valve 142 is opened, the refrigerant will be divided into two paths.

After passing through the reversing valve 101 again, the first-path refrigerant directly flows into the outdoor heat exchanger 120, exchanges heat and condenses into a liquid state, and flows into the indoor unit side. The second-path refrigerant flows into the indoor heat recovery heat exchanger 140 through the second control valve 142, and the heat is condensed into a liquid state. The second-path refrigerant realizes reheating of the air passing through the heat recovery heat exchanger 140 in the heat recovery heat exchanger 140. According to different requirements, the opening degree of the fourth throttle member 141 can be adjusted to control the flow rate of the second refrigerant.

Since the second throttle member 121 is at the maximum opening degree and the third throttle member 131 is at the closed state, the first-path liquid refrigerant will directly merge with the second-path refrigerant, and after being throttled and depressurized by the first throttle member 111 It flows into the indoor heat exchanger 110 to evaporate and absorb heat. The finally evaporated low-temperature and low-pressure refrigerant vapor returns to the suction side of the compressor 100 through the reversing valve 101 to complete a refrigeration cycle.

Such a cycle can realize the function of adjusting the temperature of indoor air. According to different requirements, the opening degree of the fourth throttle member 141 can be adjusted to control the flow rate of the second-path refrigerant, that is, to control the reheat amount of the heat recovery heat exchanger 140. When the reheat is less than the cooling capacity of the first refrigerant, the overall cooling process is achieved; when the reheat is equal to the cooling capacity of the first refrigerant, the overall temperature is achieved; when the reheat is greater than the first cooling When the cooling capacity of the agent is used, the overall heating process is achieved. In some embodiments, the electric heater 180 can also be turned on when the heating demand is large.

During the temperature adjustment process, the state of the humidifier 170 can be switched according to different needs of humidity. Under the dehumidification demand, the humidifier 170 is turned off. In the temperature adjustment process, the heat recovery heat exchanger 140 is used to reheat the air to achieve dehumidification, which can reduce or even avoid the additional energy consumption caused by the use of a pure electric heating system, thereby achieving energy saving and environmental protection.

Under the demand of humidification, the humidifier 170 is opened. As shown in FIG. 8A, the second-path refrigerant in the heat recovery heat exchanger 140 can heat the atomized water sprayed from the humidifier 170, increase the evaporation efficiency of the atomized water, and realize humidification.

8B is a schematic diagram illustrating the cooling mode of the air conditioning system according to other embodiments of the present disclosure.

In this cooling mode, the compressor 100 is turned on, the outdoor fan 160 is turned on, the indoor fan 150 is turned on, the reversing valve 101 is in a cooling state, the first control valve 132 is turned off, the second control valve 142 is turned off, and the first throttle member 111 is based on Demand adjustment, the maximum opening degree of the second throttle member 121, the third throttle member 131 is closed, the fourth throttle member 141 is closed, and the humidifier 170 is closed.

8B is different from FIG. 8A in that the second control valve 142 is closed and the fourth throttle member 141 is closed, that is, the heat recovery heat exchanger 130 does not operate. In FIG. 8A, the refrigerant flows through the first circuit and the third circuit; while in FIG. 8B, the refrigerant flows only through the first circuit.

According to some embodiments of the present disclosure, an air conditioning system is provided, which can not only realize the aforementioned functions of defrosting, temperature adjustment, humidification, and dehumidification, but also use the fresh air subsystem to achieve the function of purifying air. The air conditioning system can integrate heat accumulators, heat pump subsystems (ie heat recovery heat exchangers), humidifiers, fresh air subsystems, and filters to achieve the energy-saving effect of constant temperature and humidity air conditioning systems in the process of temperature and humidity control.

Different functions of the air conditioning system can be implemented by the air conditioning control device to execute the corresponding method.

For example, in the defrosting mode, at least part of the high-temperature refrigerant flowing out of the compressor is controlled to flow to the outdoor heat exchanger, and the outdoor heat exchanger is heated to achieve defrosting, condensed into a liquid state, and then flows into the heat exchanger through the regenerator compressor. When defrosting needs heating at the same time, a part of the high-temperature refrigerant flowing out of the compressor is controlled to flow to the outdoor heat exchanger, and another part of the high-temperature refrigerant flows to the heat recovery heat exchanger, which are respectively used to heat the outdoor heat exchanger to Defrosting and heating the heat recovery heat exchanger to achieve heating, condensing into a liquid state and flowing into the compressor through the regenerator. In the case where defrosting needs humidification at the same time, the humidifier provided near the heat recovery heat exchanger is controlled to open, and another part of the high-temperature refrigerant passing through the heat recovery heat exchanger heats the water from the humidifier, To achieve humidification.

For another example, in the heating mode, a part of the high-temperature refrigerant flowing out of the compressor is controlled to flow to the indoor heat exchanger to heat the indoor heat exchanger, and another part of the high-temperature refrigerant flows to the heat accumulator to perform heat storage. It is heated and condensed into a liquid state and flows into the compressor through the outdoor heat exchanger. You can also control the fresh air subsystem to open to filter the air.

9 is a block diagram illustrating an air-conditioning control device according to some embodiments of the present disclosure.

As shown in FIG. 9, the air-conditioning control device 90 includes a memory 910 and a processor 920 coupled to the memory 910. The memory 910 is used to store instructions for executing the corresponding embodiment of the air-conditioning control method. The processor 920 is configured to execute the air-conditioning control method in any of the embodiments of the present disclosure based on the instructions stored in the memory 910.

It should be understood that each step in the foregoing air-conditioning control method may be implemented by a processor, and may be implemented in any manner of software, hardware, firmware, or a combination thereof.

In addition to air conditioning control methods and devices, embodiments of the present disclosure may also take the form of computer program products implemented on one or more non-volatile storage media containing computer program instructions. Therefore, an embodiment of the present disclosure also provides a computer-readable storage medium on which computer instructions are stored, which when executed by a processor implements the air-conditioning control method in any of the foregoing embodiments.

As shown in FIG. 10, the computer system can be expressed in the form of a general-purpose computing device. The computer system includes a memory 1010, a processor 1020, and a bus 1000 connecting different system components.

The memory 1010 may include, for example, a system memory, a non-volatile storage medium, and the like. The system memory stores, for example, an operating system, application programs, a boot loader (Boot Loader), and other programs. System memory may include volatile storage media, such as random access memory (RAM) and/or cache memory. The non-volatile storage medium stores, for example, instructions to execute the corresponding embodiments of the display method. Non-volatile storage media include, but are not limited to, disk storage, optical storage, flash memory, and so on.

The processor 1020 can be implemented by discrete hardware components such as a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gates, or transistors achieve. Correspondingly, each module, such as the judgment module and the determination module, can be implemented by executing instructions of the corresponding steps in the central processing unit (CPU) running memory, or by a dedicated circuit that executes the corresponding steps.

The bus 1000 can use any of various bus structures. For example, the bus structure includes but is not limited to an industry standard architecture (ISA) bus, a micro channel architecture (MCA) bus, and a peripheral component interconnect (PCI) bus.

The computer system may further include an input and output interface 1030, a network interface 1040, a storage interface 1050, and the like. These

interfaces

1030, 1040, 1050 and the memory 1010 and the processor 1020 may be connected by a bus 1000. The input-output interface 1030 can provide a connection interface for input-output devices such as a display, a mouse, and a keyboard. The network interface 1040 provides a connection interface for various networked devices. The storage interface 1050 provides a connection interface for external storage devices such as floppy disks, U disks, and SD cards.

So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

An air conditioning system, including:

Connect the compressor, indoor heat exchanger, first throttle component and outdoor heat exchanger that form the first loop through the pipeline;

A heat accumulator is connected in parallel with the indoor heat exchanger, wherein the compressor, the heat accumulator and the outdoor heat exchanger are connected by a pipeline to form a second circuit.
The air-conditioning system according to claim 1, further comprising: a second throttling member disposed on the pipeline between the first throttling member and the outdoor heat exchanger and included in the first circuit and In the second loop.
The air-conditioning system according to claim 2, further comprising: a first control valve provided on the pipeline between the heat accumulator and the compressor and included in the second circuit.
The air-conditioning system according to claim 2, further comprising: a third throttle member provided on the pipeline between the heat accumulator and the second throttle member and included in the second circuit.
The air conditioning system of claim 1, wherein the heat accumulator includes a plurality of sets of heat storage modules connected in parallel.
The air conditioning system of claim 1, further comprising:

A heat recovery heat exchanger is connected in parallel with the outdoor heat exchanger, wherein the compressor, the heat recovery heat exchanger, the first throttle member and the indoor heat exchanger are connected by a pipeline to form a third Loop.
The air-conditioning system according to claim 6, wherein the heat recovery heat exchanger is connected to a pipeline between the indoor heat exchanger and the first throttle member through a pipeline provided with a check valve.
The air-conditioning system according to claim 6, further comprising: a second control valve provided on the pipeline between the heat recovery heat exchanger and the compressor and included in the third circuit.
The air-conditioning system according to claim 6, further comprising: a fourth throttling member provided on the pipeline between the heat recovery heat exchanger and the first throttling member and included in the third circuit in.
The air-conditioning system according to claim 6, further comprising: a directional valve including a first valve port connected to the inlet of the compressor and a second valve port connected to the outlet of the compressor A third valve port connected to the indoor heat exchanger and the regenerator, and a fourth valve port connected to the outdoor heat exchanger and the heat recovery heat exchanger.
The air conditioning system of claim 6, further comprising:

The humidifier is provided near the heat recovery heat exchanger.
The air conditioning system of claim 1, further comprising:

The first filter is provided at the air inlet of the air conditioning system, and is used for performing first filtering on the air.
The air conditioning system according to any one of claims 1-12, further comprising:

The fresh air subsystem is set near the air inlet of the air conditioning system.
The air conditioning system according to claim 13, wherein the fresh air subsystem includes a full heat exchanger for making the outdoor fresh air temperature close to the indoor temperature through heat exchange.
The air-conditioning system according to claim 13, wherein the fresh air subsystem includes a second filter for second filtering air.
An air-conditioning control method, including:

In the defrosting mode, at least part of the high-temperature refrigerant flowing out of the compressor is controlled to flow to the outdoor heat exchanger, and the outdoor heat exchanger is heated to achieve defrosting, condensed into a liquid state, and then flows into the compressor through a regenerator .
The air conditioner control method according to claim 16, wherein:

A part of the high-temperature refrigerant flowing out of the compressor flows to the outdoor heat exchanger, which heats the outdoor heat exchanger to achieve defrosting, condenses into a liquid state, and flows into the compressor through the regenerator;

Another part of the high-temperature refrigerant flowing out of the compressor flows to the heat recovery heat exchanger, heats the heat recovery heat exchanger to achieve heating, condenses into a liquid state, and flows into the compressor through the heat accumulator.
The air-conditioning control method of claim 17, further comprising:

The humidifier arranged near the heat recovery heat exchanger is controlled to open, and another part of the high-temperature refrigerant passing through the heat recovery heat exchanger heats the water from the humidifier to achieve humidification.
The air-conditioning control method according to claim 17, wherein the flow rate of another part of the high-temperature refrigerant to the heat recovery heat exchanger is controlled by a throttle member.
The air-conditioning control method of claim 16, further comprising:

In the heating mode, a part of the high-temperature refrigerant flowing out of the compressor is controlled to flow to the indoor heat exchanger to heat the indoor heat exchanger, and another part of the high-temperature refrigerant flows to the regenerator to heat the regenerator, respectively After condensing into a liquid state, it flows into the compressor through the outdoor heat exchanger.
The air-conditioning control method of claim 16, further comprising:

Control the fresh air subsystem to open to filter air.
An air conditioner control device, including:

Memory; and

A processor coupled to the memory, the processor configured to execute the air-conditioning control method according to any one of claims 16-21 based on instructions stored in the memory.
A computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the air-conditioning control method according to any one of claims 16-21.