Compression unit, air conditioner and control method and control device

Abstract

This application provides a compression device, an air conditioner, and a control method and control device thereof. The compression device includes: a housing having an evaporation chamber, a motor cooling chamber, and a condensation chamber formed therein; the evaporation chamber and the condensation chamber are connected by a first channel; the motor cooling chamber and the condensation chamber are connected by a second channel; the condensation chamber has a first refrigerant outlet; the motor cooling chamber has a first refrigerant inlet; the evaporation chamber has multiple refrigerant inlets and outlets, including a second refrigerant inlet; the first refrigerant outlet is configured to communicate with both the first and second refrigerant inlets; a motor mounted in the motor cooling chamber; and an impeller mounted on the motor shaft and extending into the first channel. This compression device is suitable for compressing water-based refrigerant, is safe and pollution-free, and has a compact structure and small size, making it suitable for use in household air conditioners.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of air conditioning technology, and particularly to, but is not limited to, a compressor, an air conditioner, a control method for an air conditioner, and a control device for an air conditioner. Background Technology

[0002] Refrigerants have gone through three generations. The first generation, before 1930, had no specific requirements for refrigerants; any usable substance could be used as a refrigerant, mainly natural refrigerants such as NH3, CO2, SO2, and air. However, its application faced many technical challenges. The second generation consisted of chlorine-containing synthetic refrigerants, including chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), but these caused ozone layer depletion. The third generation consisted of hydrofluorocarbons (HFCs), which solved the ozone layer depletion problem but contributed to a strong greenhouse effect. Under the new circumstances, in order to prevent global warming and reduce the greenhouse effect, people have begun to accelerate the pace of replacing CFCs and HCFCs.

[0003] Among novel refrigerants, natural refrigerants have received considerable attention. There are two main categories of natural refrigerants that can be used as refrigerants: one is specific hydrocarbons, the most commonly used being propane (R290), but its widespread use is limited due to safety concerns such as flammability and explosiveness; the other is inorganic refrigerants, with ammonia (R717), carbon dioxide (R744), and water (R718) attracting considerable attention. The biggest drawback of ammonia (R717) is its high toxicity. In contrast, water and carbon dioxide have the best physical properties, being both economical and affordable. However, carbon dioxide has a critical temperature of 31℃ and a critical pressure of 7.38 MPa, existing in a supercritical state at higher temperatures, resulting in very high system pressures, poor safety, and significant safety hazards.

[0004] Water (R718) is non-toxic, non-flammable, and non-explosive. It is abundant in nature and is the most environmentally friendly refrigerant for human health. Moreover, when used as a refrigerant, the system operates under a vacuum, ensuring high safety. Its ODP (Ozone Depletion Potential) is 0, and its GWP (Global Warming Potential) is 0. However, the application of water as a refrigerant in existing air conditioners is relatively limited. Summary of the Invention

[0005] The purpose of this application is to provide a compression device suitable for compressing water to form a refrigerant. This compression device has a compact structure and small size, and can be used in household air conditioners.

[0006] The compression device provided in this application embodiment includes:

[0007] The housing contains an evaporation chamber, a motor cooling chamber, and a condensation chamber. The evaporation chamber and the condensation chamber are connected by a first channel, and the motor cooling chamber and the condensation chamber are connected by a second channel. The condensation chamber has a first refrigerant outlet, and the motor cooling chamber has a first refrigerant inlet. The evaporation chamber has multiple refrigerant inlets and outlets, including a second refrigerant inlet. The first refrigerant outlet is configured to communicate with both the first refrigerant inlet and the second refrigerant inlet.

[0008] The motor is installed in the motor cooling chamber; and

[0009] An impeller is mounted on the motor shaft of the motor and extends into the first channel.

[0010] This application also provides an air conditioner, including the above-described compressor device.

[0011] This application also provides a method for controlling an air conditioner, including:

[0012] Turn on the air conditioner;

[0013] Obtain the indoor ambient temperature and preset temperature;

[0014] Based on the fact that the temperature difference between the indoor ambient temperature and the preset temperature is not less than the preset temperature difference, the pressure P1 of the evaporation chamber and the pressure P2 of the condensation chamber are obtained;

[0015] The operating parameters of the air conditioner are adjusted according to the relationship between P2 / P1 and the preset pressure ratio ε.

[0016] This application also provides a control device for an air conditioner, including a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the above-described control method for the air conditioner.

[0017] In the compression device provided in this application embodiment, the evaporation chamber, condensation chamber, and motor cooling chamber are all housed within a single casing. The first refrigerant outlet of the condensation chamber and the second refrigerant inlet of the evaporation chamber are interconnected, and the evaporation chamber and condensation chamber are also connected via a first channel to form a refrigerant circulation path between them. An impeller mounted on the motor shaft can extend into the first channel, and the impeller and the first channel cooperate to form a gas compression chamber. When the compression device is operating, the refrigerant can evaporate in the evaporation chamber to form vapor, which can be compressed by the impeller. The compressed superheated vapor can then be cooled in the condensation chamber.

[0018] The motor cooling chamber and the condenser chamber are connected by a second channel, and the first refrigerant outlet of the condenser chamber and the first refrigerant inlet of the motor cooling chamber are connected to form a refrigerant circulation path between the motor cooling chamber and the condenser chamber. The motor is installed in the motor cooling chamber, so that the refrigerant cooled in the condenser chamber can flow into the motor cooling chamber to cool the motor and prevent the motor from overheating during operation.

[0019] The compression device of this application embodiment can use water as a refrigerant, which is safe and pollution-free. Moreover, the compression device has a compact structure and small size, making it suitable for use in household air conditioners. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in one embodiment of this application;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of part A;

[0022] Figure 3 A flowchart of an air conditioner control method provided in one embodiment of this application;

[0023] Figure 4 A flowchart of a control method for an air conditioner provided in another embodiment of this application.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 100-Compressor, 1-Shell, 11-Evaporator chamber, 111-Second refrigerant inlet, 112-Refrigerant circulation inlet, 113-Refrigerant circulation outlet, 114-Vapor passage, 12-Condensation chamber, 121-First refrigerant outlet, 13-Motor cooling chamber, 131-First refrigerant inlet, 14-First channel, 15-Second channel, 16-Baffle plate, 161-First stepped hole, 17-Separation wall, 18-Support base, 181-First connecting hole, 182-Connecting cavity, 183-First nozzle, 184-First bearing, 19-Second nozzle

[0026] 2-Motor, 21-Motor housing, 210-First hole section, 211-Second hole section, 212-Third hole section, 213-Connecting channel, 214-Fin, 22-Second bearing, 23-Motor shaft, 24-Stator

[0027] 3-Impeller,

[0028] 200 - First heat exchanger, 300 - Second heat exchanger, 400 - First pump, 500 - Second pump, 600 - Expansion valve, 701 - First pipeline, 702 - Second pipeline, 703 - Third pipeline. Detailed Implementation

[0029] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0030] like Figure 1 and Figure 2 As shown, this application embodiment provides a compression device 100, including: a housing 1, a motor 2, and an impeller 3.

[0031] The housing 1 contains an evaporator chamber 11, a motor cooling chamber 13, and a condenser chamber 12. The evaporator chamber 11 and the condenser chamber 12 are connected by a first channel 14, and the motor cooling chamber 13 and the condenser chamber 12 are connected by a second channel 15. The condenser chamber 12 has a first refrigerant outlet 121, and the motor cooling chamber 13 has a first refrigerant inlet 131. The evaporator chamber 11 has multiple refrigerant inlets and outlets, including a second refrigerant inlet 111. The first refrigerant outlet 121 is configured to communicate with both the first refrigerant inlet 131 and the second refrigerant inlet 111.

[0032] Motor 2 is installed in motor cooling chamber 13.

[0033] The motor 2 includes a motor shaft 23, and the impeller 3 is mounted on the motor shaft 23 of the motor 2 and extends into the first channel 14.

[0034] In this compression device 100, the evaporation chamber 11, the condensation chamber 12, and the motor cooling chamber 13 are all housed within a single casing 1. The first refrigerant outlet 121 of the condensation chamber 12 and the second refrigerant inlet 111 of the evaporation chamber 11 are connected via a first pipe 701, and the evaporation chamber 11 and the condensation chamber 12 are also connected via a first channel 14 to form a refrigerant circulation path between them. An impeller 3 mounted on the motor shaft 23 of the motor 2 extends into the first channel 14, and the impeller 3 and the first channel 14 cooperate to form a gas compression chamber. When the compression device 100 is operating, the refrigerant can evaporate in the evaporation chamber 11 to form vapor, which can be compressed by the impeller 3. The compressed superheated vapor can then be cooled in the condensation chamber 12.

[0035] The motor cooling chamber 13 and the condenser chamber 12 are connected by a second channel 15, and the first refrigerant outlet 121 of the condenser chamber 12 and the first refrigerant inlet 131 of the motor cooling chamber 13 are connected by a second pipe 702 to form a refrigerant circulation path between the motor cooling chamber 13 and the condenser chamber 12. The motor 2 is installed in the motor cooling chamber 13, so that the refrigerant cooled in the condenser chamber 12 can flow into the motor cooling chamber 13 to cool the motor 2 and prevent the motor 2 from overheating during operation.

[0036] The compression device 100 of this application embodiment can use water as a refrigerant, which is safe and pollution-free. The compression device 100 has a compact structure and small size, making it suitable for use in household air conditioners. In addition, placing the motor 2 in the motor cooling chamber 13, which is connected to the condenser chamber 12, can effectively cool the motor 2 and improve the performance of the compression device 100.

[0037] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the compression device 100 also includes a partition 16 and a partition wall 17.

[0038] A partition 16 may be disposed within the housing 1 to divide the housing 1 into an evaporation chamber 11 and a first chamber. The partition 16 may be a horizontal partition, such that the evaporation chamber 11 and the first chamber are arranged one above the other, with the evaporation chamber 11 located above the first chamber. Alternatively, the evaporation chamber 11 may be located below the first chamber.

[0039] A partition wall 17 is disposed within the first chamber to divide the first chamber into a motor cooling chamber 13 and a condenser chamber 12. The partition wall 17 may be an annular wall, forming the motor cooling chamber 13 within the partition wall 17, and the annular cavity between the partition wall 17 and the housing 1 forming the condenser chamber 12. The first refrigerant outlet 121 may be located at the bottom of the condenser chamber 12, the first refrigerant inlet 131 may be located at the bottom of the motor cooling chamber 13, and the second refrigerant inlet 111 may be located at the bottom of the evaporator chamber 11.

[0040] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the compression device 100 also includes a support base 18, which is supported on one end of the partition wall 17 near the partition plate 16 and cooperates with the partition plate 16 to form a first channel 14. The motor 2 is fixed to the support base 18, and the support base 18 is provided with a second channel 15.

[0041] A support base 18 is provided at one end of the partition wall 17 near the partition plate 16 (e.g., the upper end). This support base 18 can close the opening of the annular partition wall 17 near the partition plate 16, and the support base 18 has a second channel 15 to connect the condensing chamber 12 and the motor cooling chamber 13. The motor 2 can be fixedly connected to the support base 18 so that the motor 2 can be installed and fixed through the support base 18. The support base 18 is located in the first chamber and is set close to the partition plate 16, so that a first channel 14 can be formed between the partition plate 16 and the support base 18 to connect the condensing chamber 12 and the evaporating chamber 11.

[0042] The support base 18 serves several purposes: firstly, it secures and mounts the motor 2; secondly, it connects the condenser chamber 12 and the motor cooling chamber 13; and thirdly, it works in conjunction with the partition 16 to form the first channel 14. This multifunctional support base 18 helps simplify the structure of the compression device 100 and reduce its size.

[0043] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the partition 16 is provided with a first stepped hole 161. The area of ​​the first stepped hole 161 at the end near the evaporation chamber 11 (e.g., the upper end) is smaller than the area at the end near the first chamber (e.g., the lower end). The impeller 3 extends into the end of the first stepped hole 161 near the evaporation chamber 11, and the support base 18 extends into the end of the first stepped hole 161 near the first chamber.

[0044] The partition 16 is provided with a first stepped hole 161, which is a two-stage stepped hole comprising two segments. The area (flow cross-sectional area) of the upper segment of the first stepped hole 161 can be smaller than the area (flow cross-sectional area) of the lower segment, and the upper and lower segments of the first stepped hole 161 are smoothly connected. The impeller 3 can extend from the lower side of the partition 16 into the upper segment of the first stepped hole 161, forming a gas compression chamber between the upper segment of the first stepped hole 161 and the impeller 3. The support 18 can extend from the lower side of the partition 16 into the lower segment of the first stepped hole 161. Thus, the clearance fit between the upper segment of the first stepped hole 161 and the support 18 and the lower segment of the stepped hole forms a first channel 14, which is a curved channel. The first channel 14 can be a pressurization channel to increase the pressure of the refrigerant vapor, reduce its flow velocity, and reduce the pressure loss flowing through the first channel 14.

[0045] In some exemplary embodiments, such as Figure 2 As shown, the support base 18 is provided with a connecting cavity 182, a first connecting hole 181 and a first spray hole 183. The first connecting hole 181 connects the connecting cavity 182 and the motor cooling chamber 13, and the first spray hole 183 connects the connecting cavity 182 and the condensation chamber 12. The second channel 15 includes the first connecting hole 181, the connecting cavity 182 and the first spray hole 183.

[0046] The support base 18, which is supported on the partition wall 17, has a central region for closing the opening at the upper end of the partition wall 17, and an edge region that can extend into the condensing chamber 12. The support base 18 has a connecting cavity 182 that extends from the edge region to the central region. The lower part of the central region of the support base 18 has a first connecting hole 181 that can communicate with the motor cooling chamber 13 and the connecting cavity 182. The lower part of the edge region of the support base 18 has a first spray hole 183 that can communicate with the condensing chamber 12 and the connecting cavity 182.

[0047] The first connecting hole 181, the connecting cavity 182, and the first spray hole 183 are connected in sequence to form a second channel 15, which connects the motor cooling chamber 13 and the condensing chamber 12. In addition, the first refrigerant outlet 121 of the condensing chamber 12 and the first refrigerant inlet 131 of the motor cooling chamber 13 are connected to form a refrigerant circulation path between the motor cooling chamber 13 and the condensing chamber 12. The refrigerant can circulate between the motor cooling chamber 13 and the condensing chamber 12 so as to use the refrigerant to cool the motor 2 installed in the motor cooling chamber 13 and prevent the motor 2 from overheating when it is working.

[0048] The refrigerant in the condenser chamber 12 flows into the motor cooling chamber 13 through the first refrigerant inlet 131. The refrigerant in the motor cooling chamber 13 is injected into the condenser chamber 12 through the first nozzle 183, which atomizes the refrigerant and cools the superheated vapor. The area (flow cross-sectional area) of the first connecting hole 181 can be larger than the area (flow cross-sectional area) of the first nozzle 183. A support base 18, comprising the first connecting hole 181, the connecting cavity 182, and the first nozzle 183, forms a first nozzle for injecting refrigerant.

[0049] In some exemplary embodiments, such as Figure 2 As shown, the support base 18 is provided with a mounting hole, the second channel 15 surrounds the mounting hole, the first bearing 184 is installed at the mounting hole, and the motor shaft 23 passes through the first bearing 184.

[0050] The support base 18 may have a mounting hole at its center. The first connecting cavity 182 and the first nozzle 183 may both be arranged around the mounting hole. The first bearing 184 may be installed at the mounting hole. The motor shaft 23 of the motor 2 may pass through the first bearing 184 and the impeller 3 may be installed there. The first mounting hole facilitates the use of refrigerant in the support base 18 to cool the first bearing 184.

[0051] In some exemplary embodiments, such as Figure 2 As shown, the motor 2 also includes a motor housing 21 and a second bearing 22. The motor housing 21 has a second stepped hole and a connecting channel 213. The second stepped hole includes a first hole segment 210, a second hole segment 211, and a third hole segment 212 arranged sequentially along the axial direction. The areas of the first hole segment 210 and the third hole segment 212 are both larger than the area of ​​the second hole segment 211. The connecting channel 213 connects the first hole segment 210 and the third hole segment 212. The second bearing 22 is installed in the second hole segment 211. One end of the motor shaft 23 extends into the motor housing 21 and passes through the second bearing 22. The second bearing 22 can be interference-fitted with the second hole segment 211.

[0052] The motor housing 21 has a second stepped hole and a connecting channel 213. The second stepped hole is a three-stage stepped hole consisting of three segments, with the areas of the first segment 210 and the third segment 212 at both ends of the second stepped hole being larger than the area of ​​the middle second segment 211. The second bearing 22 is installed in the middle second segment 211. The connecting channel 213 connects the first segment 210 and the third segment 212 at both ends. Multiple connecting channels 213 can be provided and spaced apart along the circumference of the motor housing 21. The arrangement of the second stepped hole and the connecting channel 213 ensures that the air pressure at both ends of the second bearing 22 is basically balanced, preventing the lubricating grease from being sucked out, which would affect the service life of the second bearing 22.

[0053] In some exemplary embodiments, such as Figure 2 As shown, the motor housing 21 is provided with fins 214 on the outside to increase the contact area with the refrigerant in the motor cooling chamber 13 and enhance the cooling effect of the motor 2.

[0054] In some exemplary embodiments, such as Figure 2 As shown, the motor 2 also includes a stator 24, which can be encapsulated by potting.

[0055] The motor housing 21 can be made of metal and has a finned structure. The second bearing 22 is interference-fitted with the motor housing 21. This structural design of the motor 2 ensures that the interior of the motor housing 21 is not connected to the atmosphere. This not only completely isolates the external atmosphere from entering the water vapor negative pressure environment, but also effectively dissipates heat from the motor 2, greatly improving the performance of the compression device 100.

[0056] In some exemplary embodiments, such as Figure 1 and Figure 2 As shown, the evaporation chamber 11 is provided with a steam channel 114, one end of which is connected to the first channel 14.

[0057] The vapor channel 114 inside the evaporation chamber 11 can be vertically arranged, with one end connected to the first channel 14 and the other end higher than the first preset liquid level inside the evaporation chamber 11, to prevent liquid refrigerant in the evaporation chamber 11 from entering the vapor channel 114. The arrangement of the vapor channel 114 facilitates the refrigerant vapor in the evaporation chamber 11 to enter the first channel 14 through the vapor channel 114 so that it can be compressed by the impeller 3, while preventing liquid refrigerant from entering the first channel 14 through the vapor channel 114.

[0058] In some exemplary embodiments, such as Figure 1As shown, the multiple refrigerant inlets and outlets also include a refrigerant circulation inlet 112 and a refrigerant circulation outlet 113, with the refrigerant circulation inlet 112 configured to communicate with the refrigerant circulation outlet 113. The refrigerant circulation outlet 113 is located at the bottom of the evaporation chamber 11 and is positioned opposite to the second refrigerant inlet 111, while the refrigerant circulation inlet 112 is located at the top of the evaporation chamber 11.

[0059] The refrigerant circulation inlet 112 and refrigerant circulation outlet 113 of the evaporator 11 can be connected by a third pipe 703 to form an independent circulation pipe for the evaporator 11. This independent circulation pipe can be connected to an indoor heat exchanger (second heat exchanger 300). When the refrigerant in the evaporator 11 passes through the second heat exchanger 300 of this independent circulation pipe, the second heat exchanger 300 can cool the air in the room. After heat exchange at the second heat exchanger 300, the temperature of the refrigerant rises and it can flow back into the evaporator 11 to continue evaporating in order to achieve thermal equilibrium.

[0060] In some exemplary embodiments, such as Figure 1 As shown, a second nozzle 19 is provided in the evaporation chamber 11, and the refrigerant circulation inlet 112 is connected to the second nozzle 19. The second nozzle 19 can be installed in the steam passage 114.

[0061] The upper end of the second nozzle 19 may be open, and the refrigerant circulation inlet 112 may extend into the second nozzle 19 from the upper end. The side wall of the second nozzle 19 may have multiple second spray holes. The refrigerant whose temperature has increased after heat exchange in the second heat exchanger 300 can be sprayed into the evaporation chamber 11 through the second nozzle 19. Under the action of the second nozzle 19, the refrigerant continues to evaporate to reach thermal equilibrium.

[0062] In some exemplary embodiments, the compression device 100 further includes a detection module, which includes at least one of the following: a first pressure sensor for detecting the pressure of the evaporation chamber 11, a first temperature sensor for detecting the temperature of the evaporation chamber 11, a first liquid level sensor for detecting the liquid level of the evaporation chamber 11, a second pressure sensor for detecting the pressure of the condensation chamber 12, a second temperature sensor for detecting the temperature of the condensation chamber 12, and a second liquid level sensor for detecting the liquid level of the condensation chamber 12.

[0063] This application also provides an air conditioner, such as... Figure 1 As shown, it includes the compression device 100 provided in any of the above embodiments.

[0064] In some exemplary embodiments, such as Figure 1As shown, the air conditioner also includes: a first heat exchanger 200, a second heat exchanger 300, a first pump 400, a second pump 500, an expansion valve 600, a first pipe 701, a second pipe 702, and a third pipe 703. The first refrigerant outlet 121, the first heat exchanger 200, the first pump 400, the expansion valve 600, and the second refrigerant inlet 111 are sequentially connected via the first pipe 701, forming a first circulation channel consisting of the condenser chamber 12, the first heat exchanger 200, the first pump 400, the expansion valve 600, the evaporator chamber 11, and the first channel 14. One end of the second pipe 702 is connected to the first refrigerant inlet 131, and the other end is located between the first pump 400 and the expansion valve 600 and connected to the first pipe 701. The partial connection allows the second channel 15 of the condenser chamber 12, the first heat exchanger 200, the first pump 400, the motor cooling chamber 13, and the support base 18 (first nozzle) to form a second circulation channel; the refrigerant circulation outlet 113, the second pump 500, the second heat exchanger 300, and the refrigerant circulation inlet 112 of the multiple refrigerant inlets and outlets are sequentially connected through the third pipeline 703, so that the second pump 500, the second heat exchanger 300, and the evaporator chamber 11 form a third circulation channel.

[0065] In some exemplary embodiments, the refrigerant of the air conditioner includes water.

[0066] In this embodiment of the air conditioner, a partition 16 is used to separate the housing 1 of the compressor 100 to form an evaporator chamber 11 and a first chamber. A partition wall 17 is used to separate the first chamber to form a motor cooling chamber 13 and a condenser chamber 12. The motor 2 of the compressor 100 is entirely encapsulated in the motor cooling chamber 13 for cooling. One end of the motor shaft 23 of the compressor 100 is equipped with an impeller 3. The impeller 3 cooperates with the first stepped hole 161 of the partition 16 to form a gas compression chamber. The steam passage 114 guides the water vapor (using water as a refrigerant) in the evaporator chamber 11 to the impeller 3 for compression. The compressed superheated steam is cooled in the condenser chamber 12.

[0067] The third circulation channel is an independent circulation channel of the evaporation chamber 11, which is formed by the refrigerant circulation inlet 112, the second heat exchanger 300, the second pump 500 and the refrigerant circulation outlet 113. The chilled water in the evaporation chamber 11 is cooled by the second heat exchanger 300. The water after heat exchange is used for water spray evaporation and cooling in the evaporation chamber 11.

[0068] The first circulation channel is the circulation channel between the condenser chamber 12 and the evaporator chamber 11, and mainly consists of the condenser chamber 12, the first heat exchanger 200, the first pump 400, the expansion valve 600, the evaporator chamber 11, and the first channel of the baffle plate 16. The condensate from the condenser chamber 12 is condensed by the heat dissipation of the first heat exchanger 200 and returns to the evaporator chamber 11 through the expansion valve 600, thus playing a role in refrigerant circulation.

[0069] A branch line from the first circulation channel flows into the motor cooling chamber 13 through the second pipeline 702, forming the second circulation channel. The second circulation channel mainly consists of the condenser chamber 12, the first heat exchanger 200, the first pump 400, the motor cooling chamber 13, and the second channel of the support base 18 (first nozzle). After the motor 2 of the compression device 100 is encapsulated with glue, it is locked onto the support base 18, and the partition wall 17 is fixedly connected to the support base 18. The support base 18 has a connecting cavity 182, a first connecting hole 181, and a first spray hole 183. The first connecting hole 181 connects to the motor cooling chamber 13, and water for cooling the motor 2 in the motor cooling chamber 13 is injected into the connecting cavity 182 of the support base 18. The water in the connecting cavity 182 of the support base 18 can cool the first bearing 184. The first spray hole 183 connects to the condensate and atomizes it to cool the superheated steam. Therefore, the second circulation channel mainly serves to dissipate heat and is used to cool the superheated steam in the motor 2, the first bearing 184, and the condensate chamber 12 of the compression device 100.

[0070] In this air conditioner, the compressor 100 is used for water cooling, the first pump 400 is used for refrigerant circulation, the partition 16 is used to separate the evaporation chamber 11 and the first chamber, the evaporation chamber 11 provides water evaporation, the condensation chamber 12 is used for water vapor condensation, the first heat exchanger 200 and the second heat exchanger 300 serve as heat exchange components, the partition wall 17 separates the condensation chamber 12 from the motor cooling chamber 13, and at the same time serves to support the motor 2, the motor 2 is used to drive the impeller 3 to compress water vapor.

[0071] In some exemplary embodiments, the air conditioner also includes a first fan configured to generate an airflow toward the first heat exchanger 200 to accelerate the heat exchange efficiency at the first heat exchanger 200.

[0072] In some exemplary embodiments, the air conditioner also includes a second fan configured to generate an airflow toward the second heat exchanger 300 to accelerate the heat exchange efficiency at the second heat exchanger 300.

[0073] When the air conditioner in this embodiment is working, after the user turns it on, the air conditioner receives the start-up command and starts running. At this time, the first pump 400, the second pump 500, the motor 2 of the compressor 100, the first fan, the second fan, etc., operate with preset default parameters. The first pump 400 and the second pump 500 run to the default parameters to circulate water. After the evaporator chamber 11 and the cooling chamber reach their respective suitable water levels, the motor 2 of the compressor 100 is started to run to the default speed parameters, and the water in the evaporator chamber 11 evaporates, and the water temperature in the evaporator chamber 11 gradually decreases. Under the boosting pressure of the second pump 500, the chilled water in the evaporation chamber 11 cools the chamber through the third pipe 703 and the heat exchange of the second heat exchanger 300. After heat exchange, the temperature of the chilled water rises, and under the action of the second nozzle 19, the water continues to evaporate to achieve thermal equilibrium. The water vapor in the evaporation chamber 11 is guided to the impeller 3 through the steam channel 114 to be compressed by the impeller 3. The compressed water vapor is in a superheated state. The cooling water in the support 18 can cool the compressed superheated water vapor flowing through the first channel 14. The cooled water accumulates in the condensation chamber 12. Under the action of the first pump 400, the water in the condenser 12 is transported to the first heat exchanger 200 through the first pipeline 701 for heat dissipation and cooling. Then, it returns to the evaporator 11 through the expansion valve 600, which plays a role in refrigerant circulation. A branch of water from the first pipeline 701 can enter the motor cooling chamber 13 to cool the motor 2 of the compressor 100. Then, the water in the motor cooling chamber 13 enters the connecting cavity 182 of the support 18 to cool the first bearing 184. Finally, it returns to the condenser 12 through the first nozzle 183 of the support 18. This cycle is repeated to maintain thermal balance.

[0074] This application also provides a method for controlling an air conditioner, wherein the air conditioner is any of the air conditioners provided in the above embodiments.

[0075] Based on this, such as Figure 3 As shown, the control methods for air conditioners include:

[0076] S102: Turn on the air conditioner;

[0077] S104: Obtain indoor ambient temperature and preset temperature;

[0078] S106: Based on the indoor ambient temperature and the preset temperature, the pressure P1 of the evaporation chamber and the pressure P2 of the condensation chamber are obtained, provided that the temperature difference between the indoor ambient temperature and the preset temperature is not less than the preset temperature difference.

[0079] S108: Adjust the operating parameters of the air conditioner according to the relationship between P2 / P1 and the preset pressure ratio ε.

[0080] When the user turns on the air conditioner, it receives the start-up command and begins operation. At this time, the first pump 400, the second pump 500, the motor 2 of the compressor unit 100, the first fan, the second fan, etc., operate with preset default parameters. Then, for example, after a preset time period, the indoor ambient temperature and the preset temperature (set by the user or a preset comfort temperature) can be obtained. The temperature difference ΔT between the indoor ambient temperature and the preset temperature is used for relevant control. When the temperature difference ΔT ≤ the preset temperature difference T0, the indoor temperature meets the user's needs. The air conditioner can operate stably according to the current parameters. If ΔT≤T0 is not satisfied, the pressure P1 of the evaporator chamber 11 and the pressure P2 of the condenser chamber 12 are obtained. Then, it is determined whether the ratio of P2 / P1 meets the preset pressure ratio ε of the preset operating condition. Based on the relationship between the ratio of P2 / P1 and the preset pressure ratio ε, the operating parameters of the air conditioner are adjusted, such as adjusting the speed of the first fan and the second fan, the flow rate of the first pump 400 and the second pump 500, and the speed of the motor 2 of the compressor 100, so that the temperature difference ΔT≤Preset temperature difference T0 is satisfied.

[0081] The preset temperature difference T0 can be set between 0.5℃ and 2℃, for example, it can be 1℃. Of course, the range of T0 is not limited to 0.5℃-2℃ and can be adjusted according to actual needs.

[0082] The preset pressure ratio ε can range from 2 to 3, such as 2.5. Of course, the range of ε is not limited to 2-3 and can be adjusted according to actual needs.

[0083] In some exemplary embodiments, step S108, which adjusts the operating parameters of the air conditioner based on the relationship between P2 / P1 and the preset pressure ratio ε, includes:

[0084] Under cooling conditions, based on P2 / P1 > ε, perform at least one of the following operations:

[0085] Increase the speed of the first and second fans;

[0086] Increase the flow rates of the first and second pumps;

[0087] Reduce the speed of the compressor motor.

[0088] When the ratio of P2 / P1 > ε, the speeds of the first and second fans can be increased to increase the heat exchange rate of the first heat exchanger 200 and the second heat exchanger 300, thereby reducing the indoor temperature; and / or, the flow rates of the first pump 400 and the second pump 500 can be increased (e.g., increasing the speed of the first pump 400 and the second pump 500 increases their speed), allowing more refrigerant to flow into the evaporator chamber 11; and / or, the speed of the motor 2 of the compressor unit 100 can be reduced. This configuration helps to increase the pressure P1 in the evaporator chamber 11 and decrease the pressure P2 in the condenser, thus reducing the P2 / P1 ratio. Simultaneously, it helps to lower the indoor temperature until the temperature difference ΔT ≤ T0 is met, allowing the air conditioner to maintain stable operation.

[0089] In some exemplary embodiments, step S108, which adjusts the operating parameters of the air conditioner based on the relationship between P2 / P1 and the preset pressure ratio ε, further includes:

[0090] Under cooling conditions, based on P2 / P1≤ε, perform at least one of the following operations:

[0091] Reduce the speed of the first and second fans;

[0092] Reduce the flow rates of the first and second pumps;

[0093] Increase the speed of the compressor motor.

[0094] When the ratio of P2 / P1 is not greater than ε (i.e., the ratio of P2 / P1 is less than or equal to ε), the speeds of the first and second fans can be reduced; and / or, the flow rates of the first pump 400 and the second pump 500 can be reduced; and / or, the speed of the motor 2 of the compressor unit 100 can be increased. This configuration helps to reduce the pressure P1 in the evaporator chamber 11 and increase the pressure P2 in the condenser, thus increasing the P2 / P1 ratio. Simultaneously, it helps to lower the indoor ambient temperature until the temperature difference ΔT ≤ T0 is satisfied, allowing the air conditioner to maintain stable operation.

[0095] In some exemplary embodiments, step S102 of starting the air conditioner includes:

[0096] Obtain the liquid levels in the evaporation and condensation chambers;

[0097] Start the first and second pumps; and

[0098] When the liquid level in the evaporation chamber reaches the first preset liquid level and the liquid level in the condensation chamber reaches the second preset liquid level, the motor of the compression device is started.

[0099] The liquid level in the evaporator chamber 11 can be obtained using a first liquid level sensor, and the liquid level in the condenser chamber 12 can be obtained using a second liquid level sensor. Then, the first pump 400 and the second pump 500 are started and run to their default parameters to circulate the water. After the evaporator chamber 11 and the condenser chamber reach their respective preset liquid levels, the motor 2 of the compressor unit 100 is started and runs to its default speed parameters. Subsequently, the operating parameters of each component of the air conditioner can be adjusted or kept constant based on the difference between the indoor ambient temperature and the preset temperature.

[0100] In some exemplary embodiments, the step of obtaining the pressure P1 of the evaporation chamber includes:

[0101] P1 is detected using a pressure sensor; or, the temperature T1 of the evaporation chamber is detected using a temperature sensor, and P1 is obtained based on T1.

[0102] The pressure P1 of the evaporation chamber 11 can be detected by the first pressure sensor to obtain P1 directly; or, the temperature T1 of the evaporation chamber 11 can be detected by the first temperature sensor. The temperature T1 of the evaporation chamber 11 is related to the pressure P1, so P1 can be obtained indirectly based on T1.

[0103] In some exemplary embodiments, the step of obtaining the pressure P2 of the condenser chamber includes:

[0104] P2 can be detected using a pressure sensor; or, the temperature T2 of the condenser can be detected using a temperature sensor, and P2 can be obtained based on T2.

[0105] The pressure P2 of the condenser chamber 12 can be detected by the second pressure sensor to obtain P2 directly; or, the temperature T2 of the condenser chamber 12 can be detected by the second temperature sensor. The temperature T2 of the condenser chamber 12 is related to the pressure P2, so P2 can be obtained indirectly based on T2.

[0106] In some exemplary embodiments, such as Figure 4 As shown, the control method of the air conditioner is as follows.

[0107] When the user turns on the air conditioner to cool, the air conditioner first obtains the liquid levels in the evaporator chamber 11 and the condenser chamber 12, and then starts the first pump 400 and the second pump 500 to run at the default parameters (pre-set) to circulate the water. After the evaporator chamber 11 and the condenser chamber 12 reach their respective suitable liquid levels (the first preset liquid level and the second preset liquid level, respectively), the motor 2 of the compressor device 100 is started to run at the default speed parameters. At this time, a pressure difference is formed between the evaporator chamber 11 and the condenser chamber 12, and the compressor device 100 begins to cool.

[0108] At this time, the motor 2, first pump 400, second pump 500, first fan, second fan, etc. of the compression device 100 are all running according to the default parameters. Then, the indoor ambient temperature and the preset temperature can be obtained, and relevant control can be performed based on the temperature difference ΔT between the two. If the temperature difference ΔT ≤ preset temperature difference T0, the indoor temperature can meet the user's needs, and the air conditioner operates stably according to the current parameters. If the temperature difference ΔT ≤ T0 is not met, the temperature T1 and / or pressure P1 in the evaporator chamber 11 and the temperature T2 and / or pressure P2 in the condenser chamber 12 are obtained. Then, it is determined whether the ratio of P2 / P1 is greater than the preset pressure ratio ε of the preset operating condition. If P2 / P1 > ε, the speed (gear) of the first fan and the second fan is increased, and / or the flow rate of the first pump 400 and the second pump 500 is increased, and / or the speed of the fan of the compressor 100 is decreased. If P2 / P1 > ε is not met, the speed of the first fan and the second fan is decreased, and / or the flow rate of the first pump 400 and the second pump 500 is decreased, and / or the speed of the fan of the compressor 100 is increased. The speed of the first and second fans, and / or the flow rates of the first pump 400 and the second pump 500, and / or the speed of the fan of the compressor 100 can be corrected multiple times until the temperature difference ΔT≤T0, and the air conditioner operates stably.

[0109] This application also provides a control device for an air conditioner, including a processor and a memory storing a computer program. When the processor executes the computer program, it implements the control method for the air conditioner provided in any of the above embodiments.

[0110] The control device, functionally speaking, may include a calculation module and a control module. The calculation module, control module, and detection module can form an electronic control system. The detection module is used to detect various parameters, such as indoor environmental parameters (indoor ambient temperature and pressure), and parameters of the evaporation chamber 11 and the condensation chamber 12 (pressure, temperature, water level), etc. The calculation module is used to calculate the pumping speed of the first pump 400 and the second pump 500, the speed of the motor 2 of the compression device 100, the pressure ratio, etc. The control device is used to control the speed of the motor 2 of the compression device 100, the flow rate (speed) of the first pump 400 and the second pump 500, the speed of the first fan and the second fan, and other operating parameters.

[0111] In summary, the air conditioner in this embodiment uses water as its refrigerant, which is non-toxic, non-flammable, and non-explosive, offering high safety and environmental friendliness. Its ODP (Ozone Depletion Potential) is 0, and its GWP (Global Warming Potential) is 0. This air conditioner employs a novel water-cooling method, resulting in a compact structure suitable for household cooling applications. The motor 2 of the compressor 100 is integrated into the motor cooling chamber 13, effectively cooling and sealing the motor 2 and preventing external atmospheric air from entering the water vapor medium environment.

[0112] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0113] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0114] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0115] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0116] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0117] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0118] In any one or more of the exemplary embodiments described above, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored as one or more instructions or code on or transmitted via a computer-readable medium and executed by a hardware-based processing unit. The computer-readable medium may comprise a computer-readable storage medium corresponding to a tangible medium, such as a data storage medium, or a communication medium comprising any medium facilitating the transfer of a computer program from one place to another, such as according to a communication protocol. In this manner, a computer-readable medium may generally correspond to a non-transitory tangible computer-readable storage medium or a communication medium, such as a signal or carrier wave. The data storage medium may be any available medium accessible by one or more computers or one or more processors to retrieve instructions, code, and / or data structures for implementing the techniques described in this disclosure. Computer program products may comprise computer-readable media.

[0119] For example, and not as a limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible by a computer. Furthermore, any connection may also be referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but rather refer to non-transient tangible storage media. As used herein, disks and optical discs include compact optical discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, or Blu-ray discs, where disks typically reproduce data magnetically, while optical discs use lasers to reproduce data optically. The above combinations should also be included within the scope of computer-readable media.

[0120] For example, instructions can be executed by one or more processors, such as one or more digital signal processors (DSPs), general-purpose microprocessors, application-specific integrated circuits (ASICs), field-programmable arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Therefore, the term "processor" as used herein can refer to any of the above-described structures or any other structures suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated into combined codecs. Furthermore, the techniques can be fully implemented in one or more circuit or logic elements.

[0121] The technical solutions of the embodiments of this disclosure can be implemented in a wide variety of devices or equipment, including wireless mobile phones, integrated circuits (ICs), or a set of ICs (e.g., chipsets). Various components, modules, or units are described in the embodiments of this disclosure to emphasize functional aspects of a device configured to perform the described techniques, but they do not necessarily need to be implemented through different hardware units. Rather, as described above, the various units can be combined in codec hardware units or provided by a collection of interoperable hardware units (including one or more processors as described above) combined with suitable software and / or firmware.

[0122] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims relating to the method and / or process should not be limited to the steps performed in the order written, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of the invention.

Claims

1. A compression device, characterized in that, include: The housing contains an evaporation chamber, a motor cooling chamber, and a condensation chamber. The evaporation chamber and the condensation chamber are connected by a first channel, and the motor cooling chamber and the condensation chamber are connected by a second channel. The condensation chamber has a first refrigerant outlet, the motor cooling chamber has a first refrigerant inlet, and the evaporation chamber has multiple refrigerant inlets and outlets, including a second refrigerant inlet. The first refrigerant outlet is configured to communicate with both the first refrigerant inlet and the second refrigerant inlet. The motor is installed in the motor cooling chamber; and An impeller is mounted on the motor shaft of the motor and extends into the first channel.

2. The compression device according to claim 1, characterized in that, Also includes: A partition is disposed within the housing to divide the housing into the evaporation chamber and the first chamber; and A partition wall is provided in the first chamber to divide the first chamber into the motor cooling chamber and the condensation chamber.

3. The compression device according to claim 2, characterized in that, The partition is a horizontal partition, and the evaporation chamber is located on the upper side of the first chamber; The partition wall is an annular wall, and the motor cooling chamber is formed inside the partition wall. The annular cavity between the partition wall and the housing forms the condensation chamber.

4. The compression device according to claim 2, characterized in that, Also includes: A support base is provided on one end of the partition wall near the partition plate and cooperates with the partition plate to form the first channel. The motor is fixed to the support base, and the support base is provided with the second channel.

5. The compression device according to claim 4, characterized in that, The partition is provided with a first stepped hole, the area of ​​the first stepped hole near the evaporation chamber is smaller than the area near the first chamber, the impeller extends into the end of the first stepped hole near the evaporation chamber, and the support extends into the end of the first stepped hole near the first chamber. The support base is provided with a connecting cavity, a first connecting hole connecting the connecting cavity and the motor cooling chamber, and a first spray hole connecting the connecting cavity and the condensation chamber. The second channel includes the first connecting hole, the connecting cavity and the first spray hole.

6. The compression device according to claim 4, characterized in that, The support base is provided with a mounting hole, the second channel surrounds the mounting hole, a first bearing is installed at the mounting hole, and the motor shaft passes through the first bearing.

7. The compression device according to any one of claims 1 to 6, characterized in that, The motor also includes a motor housing and a second bearing. The motor housing has a second stepped hole and a connecting channel. The second stepped hole includes a first hole segment, a second hole segment and a third hole segment arranged sequentially along the axial direction. The area of ​​the first hole segment and the third hole segment is larger than the area of ​​the second hole segment. The connecting channel connects the first hole segment and the third hole segment. The second bearing is installed in the second bore section, and one end of the motor shaft extends into the motor housing and passes through the second bearing.

8. The compression device according to any one of claims 1 to 6, characterized in that, The evaporation chamber is provided with a steam channel, one end of which is connected to the first channel.

9. The compression device according to any one of claims 1 to 6, characterized in that, The plurality of refrigerant inlets and outlets also include a refrigerant circulation inlet and a refrigerant circulation outlet, wherein the refrigerant circulation inlet is configured to communicate with the refrigerant circulation outlet; The evaporation chamber is equipped with a second nozzle, and the refrigerant circulation inlet is connected to the second nozzle.

10. The compression device according to any one of claims 1 to 6, characterized in that, It also includes a detection module, which includes at least one of the following: A first pressure sensor for detecting the pressure in the evaporation chamber; A first temperature sensor for detecting the temperature of the evaporation chamber; A first liquid level sensor for detecting the liquid level in the evaporation chamber; A second pressure sensor for detecting the pressure in the condenser chamber; A second temperature sensor for detecting the temperature of the condensation chamber; A second liquid level sensor is used to detect the liquid level in the condenser chamber.

11. An air conditioner, characterized in that, The compression device includes any one of claims 1 to 10.

12. The air conditioner according to claim 11, characterized in that, Also includes: First heat exchanger, second heat exchanger, first pump, second pump, expansion valve, first pipeline, second pipeline, and third pipeline. The first refrigerant outlet, the first heat exchanger, the first pump, the expansion valve, and the second refrigerant inlet are connected sequentially through the first pipeline; One end of the second pipeline is connected to the first refrigerant inlet, and the other end is connected to the portion of the first pipeline located between the first pump and the expansion valve; The refrigerant circulation outlet, the second pump, the second heat exchanger, and the refrigerant circulation inlet of the multiple refrigerant inlets and outlets are sequentially connected through the third pipeline; The refrigerant in the air conditioner includes water.

13. The air conditioner according to claim 12, characterized in that, Also includes: A first fan is configured to generate an airflow toward the first heat exchanger; and The second fan is configured to generate an airflow directed toward the second heat exchanger.

14. A control method for an air conditioner, characterized in that, The air conditioner is the air conditioner according to any one of claims 11 to 13; The control method includes: Turn on the air conditioner; Obtain the indoor ambient temperature and preset temperature; Based on the fact that the temperature difference between the indoor ambient temperature and the preset temperature is not less than the preset temperature difference, the pressure P1 of the evaporation chamber and the pressure P2 of the condensation chamber are obtained; The operating parameters of the air conditioner are adjusted according to the relationship between P2 / P1 and the preset pressure ratio ε.

15. The control method for an air conditioner according to claim 14, characterized in that, The air conditioner is the air conditioner according to claim 13; The step of adjusting the operating parameters of the air conditioner according to the relationship between P2 / P1 and the preset pressure ratio ε includes: Under cooling conditions, based on P2 / P1 > ε, perform at least one of the following operations: Increase the speed of the first fan and the second fan; Increase the flow rates of the first pump and the second pump; Reduce the speed of the motor of the compression device.

16. The control method for an air conditioner according to claim 14, characterized in that, The air conditioner is the air conditioner according to claim 13; The step of adjusting the operating parameters of the air conditioner according to the relationship between P2 / P1 and the preset pressure ratio ε includes: Under cooling conditions, based on P2 / P1≤ε, perform at least one of the following operations: Reduce the speed of the first fan and the second fan; Reduce the flow rates of the first pump and the second pump; Increase the speed of the motor of the compression device.

17. The control method for an air conditioner according to any one of claims 14 to 16, characterized in that, The step of starting the air conditioner includes: Obtain the liquid levels in the evaporation chamber and the condensation chamber; Start the first and second pumps of the air conditioner; and When the liquid level in the evaporation chamber reaches the first preset liquid level and the liquid level in the condensation chamber reaches the second preset liquid level, the motor of the compression device is started.

18. The control method for an air conditioner according to any one of claims 14 to 16, characterized in that, The step of obtaining the pressure P1 of the evaporation chamber includes: P1 is detected using a pressure sensor, or the temperature T1 of the evaporation chamber is detected using a temperature sensor, and P1 is obtained based on T1. The step of obtaining the pressure P2 of the condenser chamber includes: P2 is detected using a pressure sensor, or the temperature T2 of the condenser chamber is detected using a temperature sensor, and P2 is obtained based on T2.

19. A control device for an air conditioner, characterized in that, It includes a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the control method of the air conditioner as described in any one of claims 14 to 18.

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