Cooling system, method of controlling cooling system, and electronic device

Abstract

The embodiment of the invention provides a cooling system, a method for controlling the cooling system and electronic equipment. An air exhaust branch of the cooling system communicates with the air return channel and comprises a first valve, and the air exhaust branch can exhaust at least part of indoor return air in the air return channel out of the room. The air return branch communicates with the air return channel and the air supply channel and comprises a second valve. The air return branch can make at least part of indoor return air in the air return channel flow to the air supply channel. The fresh air channel communicates with the air supply channel and comprises a third valve, and the fresh air channel can make outdoor fresh air flow to the air supply channel. The environment detection component is arranged to generate an environment signal for indicating indoor and outdoor environment states. In the low-temperature and high-humidity environment, part of indoor return air is exhausted out of the room through the exhaust branch, mixed fresh air is obtained after outdoor fresh air and indoor return air in the air supply channel are mixed, cooling of the data center can be achieved, icing of a heat exchange assembly of the cooling system is avoided, and energy consumption of the cooling system is reduced.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of air conditioning technology, and more particularly to a cooling system, a method for controlling a cooling system, and an electronic device. Background Art

[0002] As the core facilities of information technology, data centers not only carry out data storage and management tasks, but also provide a variety of services to support the operation of modern digital businesses. Data centers generate a lot of heat when working, so auxiliary cooling is needed to maintain the stability of various electronic equipment. Conventional data centers are often located in cold areas with excellent natural cooling conditions to reduce energy consumption. However, in low temperature and high humidity environments, the heat exchange components of indirect evaporative cooling units will freeze, which will not only affect the cooling efficiency of the data center, but also may lead to increased energy consumption. Summary of the invention

[0003] In a first aspect of the present disclosure, a cooling system is provided. The cooling system comprises: a supply air channel; a return air channel; an exhaust air branch connected to the return air channel and comprising a first valve, wherein the exhaust air branch can discharge at least part of the indoor return air in the return air channel to the outside when the first valve is opened; a return air branch connected to the return air channel and the supply air channel and comprising a second valve, wherein the return air branch can make at least part of the indoor return air in the return air channel flow to the supply air channel when the second valve is opened; a fresh air channel connected to the supply air channel and comprising a third valve, wherein the fresh air channel can make outdoor fresh air flow to the supply air channel when the third valve is opened; an environment detection component arranged to generate an environment signal for indicating indoor and outdoor environment states, wherein the environment signal at least comprises a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value; and a processing unit coupled to the environment detection component, the first valve, the second valve and the third valve, and configured to control the states of the first valve, the second valve and the third valve at least partially based on the environment signal.

[0004] In a second aspect of the present disclosure, a method for controlling a cooling system is provided. The cooling system includes an air supply channel, a return air channel, an exhaust branch, a return air branch, a fresh air channel, and an environment detection component; the exhaust branch is connected to the return air channel and includes a first valve, and the exhaust branch can discharge at least part of the indoor return air in the return air channel to the outside when the first valve is opened; the return air branch is connected to the return air channel and the supply air channel and includes a second valve, and the return air branch can make at least part of the indoor return air in the return air channel flow to the supply air channel when the second valve is opened; the fresh air channel is connected to the supply air channel and includes a third valve, and the fresh air channel can make outdoor fresh air flow to the supply air channel when the third valve is opened; the environment detection component is arranged to generate an environment signal for indicating indoor and outdoor environmental states, and the environment signal at least includes a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value. The method includes: obtaining the environment signal from the environment detection component; and controlling the states of the first valve, the second valve, and the third valve based at least in part on the environment signal.

[0005] In a third aspect of the present disclosure, an electronic device is provided, comprising: a memory for storing one or more computer instructions; and a processor for executing the one or more computer instructions stored in the memory to implement the method of the second aspect of the present disclosure.

[0006] In a fourth aspect of the present disclosure, a computer-readable storage medium is provided, wherein one or more computer instructions are stored on the computer-readable storage medium, wherein the one or more computer instructions are executed by a processor to implement the method of the second aspect of the present disclosure.

[0007] In a fifth aspect of the present disclosure, a computer program product is provided, which includes computer executable instructions, wherein the computer executable instructions implement the method of the second aspect of the present disclosure when executed by a processor.

[0008] It should be understood that the content described in this content section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0010] Figure 1A schematic diagram of a cooling system according to an embodiment of the present disclosure is shown;

[0011] Figure 2 A schematic diagram showing a processing unit, a valve and an indirect evaporative cooling unit according to an embodiment of the present disclosure is shown;

[0012] Figure 3 A schematic flow chart showing a method for controlling a cooling system executed by a processing unit according to an embodiment of the present disclosure; and

[0013] Figure 4 A block diagram of an electronic device capable of implementing various embodiments of the present disclosure is shown.

[0014] Description of reference numerals:

[0015] 100. Cooling system;

[0016] 10. Air supply channel;

[0017] 20. Return air duct; 21. Exhaust air branch; 22. Return air branch;

[0018] 30. Fresh air channel;

[0019] 41, first valve; 42, second valve; 43, third valve; 44, fourth valve; 45, fifth valve;

[0020] 50. Environmental detection component; 51. Outdoor temperature detection unit; 52. Indoor humidity detection unit; 53. Supply air temperature detection unit; 54. Return air temperature detection unit;

[0021] 60. Processing unit;

[0022] 70. Indirect evaporative cooling unit; 71. Cooling channel; 72. Heat exchange component; 73. Spray component; 74. Auxiliary refrigeration component;

[0023] 80. Filter component;

[0024] 90. Water collection tank. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects.

[0027] As mentioned above, data centers generate a lot of heat when working, so auxiliary cooling is needed to maintain the stability of various electronic equipment. Conventional data centers are often located in cold areas with excellent natural cooling conditions to reduce energy consumption. However, in low temperature and high humidity environments, the heat exchange components of indirect evaporative cooling units will freeze, which will not only affect the cooling efficiency of the data center, but also may lead to increased energy consumption.

[0028] The embodiments of the present disclosure provide a cooling system 100, a method for controlling a cooling system, and an electronic device. In an environment where the outdoor temperature is low and the indoor humidity is high, the processing unit 60 of the cooling system 100 can control the first valve 41, the second valve 42, and the third valve 43 to open. The exhaust branch 21 discharges part of the indoor return air to the outdoors, which can discharge part of the heat in the indoor return air and take away part of the moisture. The indoor return air that is not discharged flows along the return air branch 22 to the air supply duct 10. The outdoor fresh air is mixed with the indoor return air in the air supply duct 10 to obtain mixed fresh air. The temperature of the mixed fresh air is between the indoor return air and the outdoor fresh air, and the overall humidity is reduced, which can not only achieve cooling of the data center, but also avoid the freezing of the heat exchange components of the cooling system 100. At the same time, in the process of forming the mixed fresh air, there is no need to start other auxiliary cooling units, which helps to reduce the energy consumption of the cooling system 100. The following will be combined with Figures 1 to 4 To describe the principles of the present disclosure in detail.

[0029] like Figure 1 and Figure 2 As shown, the cooling system 100 includes an air supply channel 10, a return air channel 20, an exhaust branch 21, a return air branch 22, a fresh air channel 30, an environment detection component 50, and a processing unit 60.

[0030] The heat generated during the operation of the data center is released into the indoor air, thereby increasing the temperature of the indoor air. This part of the high-temperature air flows into the return air duct to form indoor return air. The high-temperature indoor return air exchanges heat with the outdoor air between the outlet of the return air duct and the inlet of the supply air duct. After the heat exchange, the temperature of the indoor return air decreases. Driven by an air power source (for example, a fan, a variable frequency drive), the cooled air flows again along the supply air duct to the interior of the data center, and then exchanges heat again with the heating elements inside the data center. The heated air flows again into the return air duct 20, thereby forming a circulating heat exchange path.

[0031] In the embodiment of the present disclosure, an exhaust branch 21 and a return branch 22 are further provided at the outlet of the return air channel 20. The exhaust branch 21 is in communication with the return air channel 20, and a first valve 41 is provided on the exhaust branch 21. When the first valve 41 is opened, the exhaust branch 21 can discharge at least part of the indoor return air in the return air channel 20 to the outside. The return branch 22 is provided between the return air channel 20 and the supply air channel 10, and the return branch 22 is in communication with the return air channel 20 and the supply air channel 10, and a second valve 42 is provided on the return branch 22. When the second valve 42 is opened, the return branch 22 can make at least part of the indoor return air in the return air channel 20 flow into the supply air channel 10.

[0032] like Figure 1 As shown, the cooling system 100 further includes a fresh air passage 30. The fresh air passage 30 is communicated with the air supply passage 10, and a third valve 43 is provided on the fresh air passage 30. When the third valve 43 is opened, the fresh air passage 30 can allow outdoor fresh air to flow to the air supply passage 10.

[0033] In order to enable the cooling system 100 to sense environmental conditions and realize automatic control of the cooling system 100, the cooling system 100 also includes an environmental detection component 50. The environmental detection component 50 includes a plurality of temperature detection units and a plurality of humidity detection units, which can be used to detect indoor and outdoor environmental conditions and generate corresponding environmental signals. It should be understood that the environmental signal includes at least a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value, and the environmental signal is at least used to feedback whether the cooling system 100 is in a low temperature and high humidity environment. If the environmental signal feedback cooling system 100 is in a low temperature and high humidity environment, it is necessary to take timely measures to avoid freezing of the heat exchange component 72 of the cooling system 100 to avoid affecting the normal operation of the data center.

[0034] In the embodiments of the present disclosure, Figure 2As shown, the processing unit 60 is coupled to the environment detection component 50, the first valve 41, the second valve 42 and the third valve 43. The processing unit 60 can receive an environment signal from the environment detection component 50 and control the states of the first valve 41, the second valve 42 and the third valve 43 at least partially based on the environment signal.

[0035] In some embodiments, the processing unit 60 may be part of a controller of the cooling system 100. In this manner, the controller of the cooling system 100 is directly coupled to the environmental detection assembly 50.

[0036] In some alternative embodiments, the processing unit 60 may be independent of the controller of the cooling system 100. In this way, the environment detection component 50 may be independent of the controller of the cooling system 100 to avoid interference with cooling control.

[0037] With this arrangement, in an environment where the outdoor temperature is low and the indoor humidity is high, the processing unit 60 of the cooling system 100 can control the first valve 41, the second valve 42 and the third valve 43 to open. The exhaust branch 21 discharges part of the indoor return air to the outdoors, which can discharge part of the heat in the indoor return air and take away part of the moisture. The indoor return air that is not discharged flows along the return air branch 22 to the air supply duct 10. The outdoor fresh air is mixed with the indoor return air in the air supply duct 10 to obtain mixed fresh air. The temperature of the mixed fresh air is between the indoor return air and the outdoor fresh air, and the overall humidity is reduced, which can not only achieve cooling of the data center, but also avoid freezing of the heat exchange components of the cooling system 100. At the same time, in the process of forming the mixed fresh air, there is no need to start other auxiliary cooling units, which helps to reduce the energy consumption of the cooling system 100.

[0038] As an example, the air supply channel 10, the return air channel 20, the exhaust branch 21, the return air branch 22, and the fresh air channel 30 of the cooling system 100 can be metal tubes. The metal tubes can be aluminum tubes, copper tubes, or stainless steel tubes with good thermal conductivity, which are not only conducive to heat transfer, but also convenient for installation and production.

[0039] As another example, the air supply channel 10, the return air channel 20, the exhaust branch 21, the return air branch 22, and the fresh air channel 30 of the cooling system 100 may be enclosed by a plurality of panels, for example, by enclosing an air circulation channel with a plurality of walls or box panels.

[0040] It should be understood that the shape, size, structure and material of the air circulation channel can be any achievable form, and the present disclosure is not intended to be limited thereto.

[0041] In an embodiment of the present disclosure, the processing unit 60 may receive an environmental signal from the environmental detection component 50, and control the states of the first valve 41, the second valve 42, and the third valve 43 based at least in part on the environmental signal. In a low temperature and high humidity environment, the heat exchange component 72 of the cooling system 100 may be prevented from freezing, and energy consumption may be reduced.

[0042] As an example, the processing unit 60 can determine whether the outdoor temperature value and the indoor humidity value are within the safety threshold range according to the environmental signal and generate corresponding status information. For example, the operator can determine the safety humidity threshold range and the safety temperature threshold range according to actual use experience or test data, and input the safety humidity threshold range and the safety temperature threshold range into the storage module. Then, the processing unit 60 can generate corresponding status information according to the relationship between the outdoor temperature value and the indoor humidity value and the safety threshold range.

[0043] Next, the processing unit 60 can control the states of the first valve 41, the second valve 42, and the third valve 43 according to the state information. For example, the state information indicates that the cooling system 100 is in a low temperature and high humidity environment, and the heat exchange component 72 of the cooling system 100 is at risk of freezing. Then the processing unit 60 controls the first valve 41, the second valve 42, and the third valve 43 to open, and the cooling system 100 switches to the mixed fresh air mode. For another example, the state information indicates that the indoor humidity is low, and the freezing risk of the environment where the cooling system 100 is located is low or there is no freezing risk. At this time, the first valve 41, the second valve 42, and the third valve 43 can be controlled to be closed. In this way, the cooling system 100 can cool down the indoor return air through other cooling units, so as to meet different usage scenarios.

[0044] As an example, in response to determining that the outdoor temperature value is lower than the safety temperature threshold and the indoor humidity value is higher than the safety humidity threshold, the processing unit 60 generates state information indicating that the cooling system 100 is in a low temperature and high humidity environment. In this way, when the outdoor temperature drops below the safety temperature threshold and the indoor humidity value is higher than the safety humidity threshold, the heat exchange component 72 of the cooling system 100 is very likely to freeze. When this condition is met, the processing unit 60 generates state information indicating that the cooling system 100 is in a low temperature and high humidity environment, thereby controlling the first valve 41, the second valve 42, and the third valve 43 to open, and the cooling system 100 switches to the mixed fresh air mode.

[0045] In some embodiments, Figure 2 As shown, the environment detection component 50 includes an outdoor temperature detection unit 51 and an indoor humidity detection unit 52 .

[0046] As an example, the outdoor temperature detection unit 51 is installed on the outdoor frame of the cooling system 100, and the indoor humidity detection unit 52 is installed on the indoor frame of the cooling system 100. The outdoor temperature detection unit 51 can detect the outdoor ambient temperature and generate a first temperature signal indicating the outdoor ambient temperature value. The indoor humidity detection unit 52 can detect the indoor ambient humidity and generate a first humidity signal indicating the indoor ambient humidity value. The processing unit 60 is coupled to the outdoor temperature detection unit 51 and the indoor humidity detection unit 52, and the processing unit 60 can receive the first temperature signal and the first humidity signal.

[0047] As another example, the outdoor temperature detection unit 51 is independently installed outdoors, and the indoor humidity detection unit 52 is independently installed indoors. The processing unit 60 transmits signals to the outdoor temperature detection unit 51 and the indoor humidity detection unit 52 via wired or wireless means.

[0048] As another example, the indoor humidity detection unit 52 is installed at the outlet of the return air duct 20 to detect the humidity of the indoor return air. The indoor return air can directly contact the heat exchange component 72 of the cooling system 100, and the risk of icing of the heat exchange component 72 can be more directly fed back. In this way, the environmental detection component 50 can detect the low temperature and high humidity environment more accurately.

[0049] In some embodiments, Figure 2 As shown, the environment detection component 50 also includes a supply air temperature detection unit 53. The supply air temperature detection unit 53 is installed at the entrance of the air supply channel 10, and can generate a second temperature signal for indicating the supply air temperature value at the entrance of the air supply channel 10. In this way, the environment detection component 50 can also be used to monitor whether the temperature of the mixed fresh air meets the heat exchange requirements of the data center. The processing unit 60 can obtain the second temperature signal from the supply air temperature detection unit 53, and control the opening of the first valve 41 and the third valve 43 according to the supply air temperature value and the supply air temperature threshold to adjust the ratio of outdoor fresh air and indoor return air flowing into the air supply channel 10.

[0050] As an example, in order to ensure the normal operation of electronic equipment in the data center, the supply air temperature threshold can be preset to 24 degrees Celsius. If the supply air temperature detection unit 53 detects that the supply air temperature value is 28 degrees Celsius, the supply air temperature value is too high at this time, which is not conducive to the stable operation of electronic equipment in the data center. The processing unit 60 can control the opening of the first valve 41 to increase, so that the exhaust branch 21 discharges more high-temperature return air, and control the opening of the third valve 43 to increase. In this way, the proportion of outdoor fresh air in the mixed fresh air can be increased, and the temperature of the mixed fresh air can be reduced, that is, the supply air temperature is reduced.

[0051] In some embodiments, Figure 2As shown, the environmental detection component 50 also includes a return air temperature detection unit 54. The return air temperature detection unit 54 is disposed at the outlet of the return air duct 20, and can generate a third temperature signal for indicating the return air temperature value at the outlet of the return air duct 20. The return air temperature value can directly feedback the heating situation in the data center. A higher return air temperature indicates that the current heat generation of the data center is large, and it is necessary to increase the power of the cooling system 100 or reduce the supply air temperature. A lower return air temperature indicates that the current heat generation of the data center is small, and the power of the cooling system 100 can be reduced to save energy.

[0052] In some embodiments, Figure 1 As shown, the cooling system 100 further includes an indirect evaporative cooling unit 70. The indirect evaporative cooling unit 70 is in communication with the return air duct 20 and the supply air duct 10, and the indirect evaporative cooling unit 70 is coupled to the processing unit 60. The processing unit 60 can control the operation of the indirect evaporative cooling unit 70 based at least in part on the environmental signal.

[0053] As an example, the processing unit 60 can obtain an environmental signal from the environmental detection component 50, and the environmental signal includes at least a first temperature signal indicating an outdoor temperature value and a third temperature signal indicating a return air temperature value at the outlet of the return air duct 20. Next, the processing unit 60 can determine the load state of the cooling system 100 based on the outdoor temperature value and the return air temperature value. For example, the higher the return air temperature value, the higher the load of the cooling system 100. The lower the outdoor temperature value, the higher the heat exchange efficiency of the cooling system 100, and the lower the load of the cooling system 100. Therefore, the load state of the cooling system 100 is related to the outdoor temperature value and the return air temperature value. Then, the processing unit 60 can control the operation of the indirect evaporative cooling unit 70 according to the load state.

[0054] In some embodiments, Figure 1 As shown, the indirect evaporative cooling unit 70 includes a cooling channel 71 and a heat exchange component 72. The inlet of the cooling channel 71 is connected to the return air channel 20, the outlet of the cooling channel 71 is connected to the supply air channel 10, and a fourth valve 44 is provided on the cooling channel 71. The heat exchange component 72 is coupled to the cooling channel 71. When the fourth valve 44 is opened, the heat exchange component 72 can exchange heat between the indoor return air in the cooling channel 71 and the outdoor air.

[0055] like Figure 1 As shown, the heat exchange assembly 72 includes a heat exchange core disposed on the cooling channel 71 and a fan disposed on one side of the heat exchange core. The fan can drive outdoor air to flow through the heat exchange core, so that the indoor return air in the cooling channel 71 exchanges heat with the outdoor air. The mode of exchanging heat with the outdoor air through the heat exchange core is also called a dry mode, which is suitable for the case where the load of the cooling system 100 is low.

[0056] As an example, in response to determining that the cooling system 100 is in the first load state, the processing unit 60 can control the fourth valve 44 of the indirect evaporative cooling unit 70 to open and control the operation of the heat exchange component 72 of the indirect evaporative cooling unit 70. In this way, the outdoor air and the indoor return air directly exchange heat through the heat exchange core, which can reduce the indoor return air temperature to meet the air supply requirement.

[0057] In some embodiments, Figure 1 As shown, the indirect evaporative cooling unit 70 further includes a spray assembly 73. The spray assembly 73 is disposed on one side of the heat exchange assembly 72, and the spray assembly 73 includes a fifth valve 45. When the fifth valve 45 is opened, the spray assembly 73 can spray cooling water to the heat exchange assembly 72 or the outdoor air.

[0058] like Figure 1 As shown, the spray assembly 73 includes a spray head and a water supply pipe, and a fifth valve 45 is installed on the water supply pipe. The spray assembly 73 sprays cooling water to the heat exchange core and the outdoor air, and the cooling water can absorb part of the heat when evaporating, thereby reducing the temperature of the indoor return air in the cooling channel 71.

[0059] As an example, in response to determining that the cooling system 100 is in the second load state, the processing unit 60 controls the fourth valve 44 and the fifth valve 45 of the indirect evaporative cooling unit 70 to open and controls the operation of the heat exchange component 72 of the indirect evaporative cooling unit 70. In this way, when the dry mode cannot meet the air supply requirement, the wet mode is activated, that is, the spray component 73 is activated to spray cooling water on the heat exchange core or outdoor fresh air, and the cooling water absorbs heat by evaporation to reduce the temperature, and then exchanges heat with the indoor return air through the heat exchange core to meet the air supply requirement.

[0060] In some embodiments, Figure 1 As shown, a water collecting tank 90 is also provided below the spray assembly 73. In this way, the water collecting tank 90 can collect the unevaporated cooling water and reuse it, which helps to save water resources and also prevents the unevaporated cooling water from flowing to other positions.

[0061] In some embodiments, Figure 1 As shown, the indirect evaporative cooling unit 70 further includes an auxiliary refrigeration component 74, and the auxiliary refrigeration component 74 is coupled to the cooling channel 71. When the fourth valve 44 is opened, the auxiliary refrigeration component 74 can exchange heat with the indoor return air in the cooling channel 71.

[0062] like Figure 1As shown, the auxiliary refrigeration component 74 includes a compressor, an evaporator, a condenser and a throttle valve. The compressor, the evaporator, the condenser and the throttle valve are connected through a refrigerant pipeline to form a refrigerant circulation loop. The evaporator of the auxiliary refrigeration component 74 is coupled to the cooling channel 71, and the evaporator can exchange heat with the indoor return air in the cooling channel 71.

[0063] As an example, in response to determining that the cooling system 100 is in the third load state, the processing unit 60 controls the fourth valve 44 and the fifth valve 45 of the indirect evaporative cooling unit 70 to open and controls the operation of the heat exchange component 72 and the auxiliary refrigeration component 74 of the indirect evaporative cooling unit 70. In this way, when the wet mode also cannot meet the air supply requirement, the hybrid mode is activated to cool the indoor return air by means of mechanical supplementary cooling of the compressor.

[0064] In some embodiments, Figure 1 As shown, the cooling system 100 further includes a filter assembly 80. The filter assembly 80 is disposed in the fresh air passage 30 and can filter the outdoor fresh air passing through the fresh air passage 30.

[0065] like Figure 1 As shown, the filter assembly 80 includes a primary filter, a medium filter and a high efficiency filter. The primary filter is the first line of defense in the air purification process, and is mainly used to remove larger particles of pollutants in the air, such as dust, pollen, insects, floccules, hair, etc. It can block these larger particles, prevent them from entering and clogging subsequent finer filters, thereby extending the service life of the entire filtration system. The medium filter is a second-stage filtration device, and the medium filter further purifies the air, mainly capturing particles between 1 micron and 5 microns, such as finer dust, certain bacteria, etc. It is often used as an intermediate filter layer in the air conditioning system to protect the high-efficiency filter from the impact of large particles, while also improving the air quality. The high-efficiency filter is located at the end of the filtration system and is the last step of air purification. It is responsible for capturing extremely small particles below 0.5 microns, including viruses, particles, smoke, microorganisms, etc. In this way, the three-stage filter jointly constructs a hierarchical filtration system to gradually improve the air quality and ensure that the final output air meets the required cleanliness standards.

[0066] It should be understood that the cooling system 100 of the embodiment of the present disclosure can also operate based on the control of the operator. For example, when the freezing speed is fast under abnormal weather conditions, the operator can directly control the states of the first valve 41, the second valve 42 and the third valve 43 to achieve normal operation of the cooling system 100.

[0067] The present disclosure also provides a method of controlling a cooling system. Figure 3A flowchart 300 of the method is shown. The method may be performed by a processing unit of a cooling system. Specifically, in block 301, the processing unit obtains an environmental signal from an environmental detection component, the environmental signal comprising at least a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value.

[0068] Next, at block 302 , the processing unit controls states of a first valve, a second valve, and a third valve based at least in part on an environmental signal.

[0069] In this way, in an environment where the outdoor temperature is low and the indoor humidity is high, the processing unit can control the first valve, the second valve and the third valve to open. The exhaust branch discharges part of the indoor return air to the outdoors, which can not only discharge part of the heat in the indoor return air, but also take away some moisture. The part of the indoor return air that is not discharged flows along the return air branch to the air supply duct. The outdoor fresh air is mixed with the indoor return air in the air supply duct to obtain mixed fresh air. The temperature of the mixed fresh air is between the indoor return air and the outdoor fresh air, and the overall humidity is reduced, which can not only achieve cooling of the data center, but also avoid the freezing of the heat exchange components of the cooling system. At the same time, in the process of forming the mixed fresh air, there is no need to start other auxiliary cooling units, which helps to reduce the energy consumption of the cooling system.

[0070] In some embodiments, the processing unit can determine whether the outdoor temperature value and the indoor humidity value are within the safety threshold range according to the environmental signal and generate corresponding status information. Then, the processing unit controls the states of the first valve, the second valve, and the third valve according to the status information. In this way, in a low temperature and high humidity environment, the heat exchange components of the cooling system can be prevented from freezing, and energy consumption can be reduced.

[0071] In some embodiments, the processing unit generates status information indicating that the cooling system is in a low temperature and high humidity environment in response to determining that the outdoor temperature value is lower than a safe temperature threshold and the indoor humidity value is higher than a safe humidity threshold.

[0072] In some embodiments, the processing unit obtains a second temperature signal from the supply air temperature detection unit, and the second temperature signal indicates the supply air temperature value at the entrance of the supply air channel. Next, the processing unit controls the opening of the first valve and the third valve according to the supply air temperature value and the supply air temperature threshold to adjust the ratio of outdoor fresh air and indoor return air flowing into the supply air channel. In this way, not only can the cooling demand of the data center be met, but there is no need to adjust the supply air temperature again through other cooling methods.

[0073] In some embodiments, the processing unit obtains an environmental signal from the environmental detection component, and the environmental signal includes at least a first temperature signal indicating an outdoor temperature value and a third temperature signal indicating a return air temperature value at an outlet of the return air duct. Next, the processing unit determines a load state of the cooling system according to the outdoor temperature value and the return air temperature value. Then, the processing unit controls the operation of the indirect evaporative cooling unit according to the load state.

[0074] In some embodiments, in response to determining that the cooling system is in the first load state, the processing unit controls the fourth valve of the indirect evaporative cooling unit to open and controls the heat exchange component of the indirect evaporative cooling unit to operate. In this way, outdoor air and indoor return air directly exchange heat through the heat exchange component, which can reduce the indoor return air temperature to meet the air supply requirement.

[0075] In some embodiments, in response to determining that the cooling system is in the second load state, the processing unit controls the fourth valve and the fifth valve of the indirect evaporative cooling unit to open and controls the operation of the heat exchange component of the indirect evaporative cooling unit. In this way, when the dry mode cannot meet the air supply requirement, the wet mode is activated, that is, the spray component is activated to spray cooling water on the heat exchange core or outdoor fresh air, and the cooling water absorbs heat by evaporation to reduce the temperature, and then exchanges heat with the indoor return air through the heat exchange core to meet the air supply requirement.

[0076] In some embodiments, in response to determining that the cooling system is in the third load state, the processing unit controls the fourth valve and the fifth valve of the indirect evaporative cooling unit to open and controls the heat exchange component and the auxiliary refrigeration component of the indirect evaporative cooling unit to operate. In this way, when the wet mode also cannot meet the air supply requirement, the hybrid mode is activated to cool the indoor return air by means of mechanical supplementary cooling of the compressor.

[0077] Figure 4 FIG. 4 is a schematic block diagram of an electronic device 400 suitable for implementing an embodiment of the present disclosure. The electronic device 400 may be the first processing unit or the second processing unit mentioned above. Figure 4 As shown, the device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) 402 or loaded from a storage unit into a random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the device 400 can also be stored. The CPU 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0078] A number of components in the device 400 are connected to the I / O interface 405, including: an input unit 406, such as a touch screen, buttons, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0079] The various processes and processing described above, such as the processes mentioned above, can be performed by the processing unit 401. For example, in some embodiments, the processes 310-320 can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as the storage unit 408. In some embodiments, part or all of the computer program can be loaded and / or installed on the device 400 via the ROM 402 and / or the communication unit 409. When the computer program is loaded into the RAM 403 and executed by the CPU 401, one or more actions of the processes 310-320 described above can be performed.

[0080] Embodiments of the present disclosure relate to methods, electronic devices, and / or computer program products. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for executing various aspects of the present disclosure.

[0081] Computer readable storage medium can be a tangible device that can hold and store instructions used by an instruction execution device. Computer readable storage medium can be, for example, (but not limited to) an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination thereof. More specific examples (non-exhaustive list) of computer readable storage medium include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, for example, a punch card or a convex structure in a groove on which instructions are stored, and any suitable combination thereof. The computer readable storage medium used here is not interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagated by a waveguide or other transmission medium (for example, a light pulse by an optical fiber cable), or an electrical signal transmitted by a wire.

[0082] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0083] The computer program instructions for performing the operation of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be customized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0084] Various aspects of the present disclosure are described herein with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0085] These computer-readable program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processing unit of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0086] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0087] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to multiple embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of the module, program segment or instruction includes one or more executable instructions for realizing the specified logical function. In some alternative implementations, the function marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of special hardware and computer instructions.

[0088] Embodiments of the present disclosure are also embodied in the following examples.

[0089] Example 1. A cooling system comprising:

[0090] Air supply duct;

[0091] Return air duct;

[0092] an exhaust branch, which is in communication with the return air passage and comprises a first valve, wherein the exhaust branch can discharge at least part of the indoor return air in the return air passage to the outside when the first valve is opened;

[0093] a return air branch, which is in communication with the return air channel and the supply air channel and includes a second valve, wherein the return air branch can allow at least part of the indoor return air in the return air channel to flow to the supply air channel when the second valve is opened;

[0094] a fresh air passage, which is in communication with the air supply passage and comprises a third valve, wherein the fresh air passage can allow outdoor fresh air to flow into the air supply passage when the third valve is opened;

[0095] An environment detection component is arranged to generate an environment signal for indicating indoor and outdoor environment conditions, the environment signal at least comprising a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value; and

[0096] A processing unit is coupled to the environment detection component, the first valve, the second valve, and the third valve, and is configured to control the states of the first valve, the second valve, and the third valve based at least in part on the environment signal.

[0097] Example 2. The cooling system according to Example 1, wherein the processing unit is further configured to:

[0098] Determine whether the outdoor temperature value and the indoor humidity value are within a safety threshold range according to the environmental signal and generate corresponding status information;

[0099] The states of the first valve, the second valve and the third valve are controlled according to the state information.

[0100] Example 3. The cooling system of Example 2, wherein the processing unit is further configured to:

[0101] In response to determining that the outdoor temperature value is lower than a safety temperature threshold and the indoor humidity value is higher than a safety humidity threshold, status information indicating that the cooling system is in a low temperature and high humidity environment is generated.

[0102] Example 4. The cooling system of Example 1, wherein the environment detection component comprises:

[0103] an outdoor temperature detection unit, arranged to generate the first temperature signal indicating the outdoor ambient temperature value; and

[0104] The indoor humidity detection unit is arranged to generate the first humidity signal indicating the indoor environment humidity value.

[0105] Example 5. The cooling system according to Example 4, wherein the environment detection component further comprises:

[0106] The supply air temperature detection unit is arranged to generate a second temperature signal indicating a supply air temperature value at an inlet of the supply air channel, and the processing unit is further configured to:

[0107] acquiring the second temperature signal; and

[0108] The openings of the first valve and the third valve are controlled according to the supply air temperature value and the supply air temperature threshold to adjust the ratio of outdoor fresh air and indoor return air flowing into the air supply channel.

[0109] Example 6. The cooling system of Example 4, wherein the environment detection component further comprises:

[0110] The return air temperature detection unit is arranged to generate a third temperature signal indicating a return air temperature value at an outlet of the return air duct.

[0111] Example 7. The cooling system of Example 6 further comprising:

[0112] An indirect evaporative cooling unit is in communication with the air supply channel and the air supply channel and is coupled to the processing unit, and the processing unit is further configured to control the operation of the indirect evaporative cooling unit at least partially based on the environmental signal.

[0113] Example 8. The cooling system of Example 7, wherein the indirect evaporative cooling unit comprises:

[0114] a cooling channel, an inlet of the cooling channel being in communication with the return air channel, an outlet of the cooling channel being in communication with the supply air channel, and comprising a fourth valve; and

[0115] A heat exchange component is coupled to the cooling channel and is capable of exchanging heat between the indoor return air in the cooling channel and the outdoor air when the fourth valve is opened.

[0116] Example 9. According to the cooling system of Example 8, the indirect evaporative cooling unit further comprises:

[0117] The spray assembly is arranged on one side of the heat exchange assembly and comprises a fifth valve. The spray assembly can spray cooling water to the heat exchange assembly when the fifth valve is opened.

[0118] Example 10. The cooling system of Example 9, wherein the indirect evaporative cooling unit further comprises:

[0119] The auxiliary refrigeration component is coupled to the cooling channel and is capable of exchanging heat with the indoor return air in the cooling channel.

[0120] Example 11. The cooling system according to any one of Examples 1 to 10, further comprising:

[0121] A filter component is arranged in the fresh air channel to filter the outdoor fresh air passing through the fresh air channel.

[0122] Example 12. A method for controlling a cooling system, the cooling system comprising an air supply channel, a return air channel, an exhaust branch, a return air branch, a fresh air channel and an environment detection component; the exhaust branch is connected to the return air channel and comprises a first valve, and the exhaust branch can discharge at least part of the indoor return air in the return air channel to the outside when the first valve is opened; the return air branch is connected to the return air channel and the supply air channel and comprises a second valve, and the return air branch can make at least part of the indoor return air in the return air channel flow to the supply air channel when the second valve is opened; the fresh air channel is connected to the supply air channel and comprises a third valve, and the fresh air channel can make outdoor fresh air flow to the supply air channel when the third valve is opened; the environment detection component is arranged to generate an environment signal for indicating indoor and outdoor environment status, and the environment signal at least comprises a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value; the method comprises:

[0123] Acquire the environment signal from the environment detection component; and

[0124] The states of the first valve, the second valve, and the third valve are controlled based at least in part on the environmental signal.

[0125] Example 13. The method of controlling a cooling system according to Example 12, wherein controlling the states of the first valve, the second valve, and the third valve based at least in part on the environmental signal comprises:

[0126] Determine whether the outdoor temperature value and the indoor humidity value are within a safety threshold range according to the environmental signal and generate corresponding status information;

[0127] The states of the first valve, the second valve and the third valve are controlled according to the state information.

[0128] Example 14. The method for controlling a cooling system according to Example 13, wherein determining whether the outdoor temperature value and the indoor humidity value are within a safety threshold range according to the environmental signal and generating corresponding status information comprises:

[0129] In response to determining that the outdoor temperature value is lower than a safety temperature threshold and the indoor humidity value is higher than a safety humidity threshold, status information indicating that the cooling system is in a low temperature and high humidity environment is generated.

[0130] Example 15. The method of controlling a cooling system according to Example 12, further comprising:

[0131] Acquiring a second temperature signal from a supply air temperature detection unit, wherein the second temperature signal indicates a supply air temperature value at an entrance of the supply air passage; and

[0132] The openings of the first valve and the third valve are controlled according to the supply air temperature value and the supply air temperature threshold to adjust the ratio of outdoor fresh air and indoor return air flowing into the air supply channel.

[0133] Example 16. The method of controlling a cooling system according to Example 12, further comprising:

[0134] Acquire an environmental signal from an environmental detection component, the environmental signal comprising at least a first temperature signal indicating an outdoor temperature value and a third temperature signal indicating a return air temperature value at an outlet of the return air duct;

[0135] Determining a load state of the cooling system according to the outdoor temperature value and the return air temperature value; and

[0136] The operation of the indirect evaporative cooling unit is controlled according to the load state.

[0137] Example 17. The method for controlling a cooling system according to Example 16, wherein controlling the operation of the indirect evaporative cooling unit according to the load state comprises:

[0138] In response to determining that the cooling system is in a first load state, the fourth valve of the indirect evaporative cooling unit is controlled to open and the heat exchange component of the indirect evaporative cooling unit is controlled to operate.

[0139] Example 18. The method for controlling a cooling system according to Example 16, wherein controlling the operation of the indirect evaporative cooling unit according to the load state further comprises:

[0140] In response to determining that the cooling system is in a second load state, the fourth valve and the fifth valve of the indirect evaporative cooling unit are controlled to open and the heat exchange component of the indirect evaporative cooling unit is controlled to operate.

[0141] Example 19. The method for controlling a cooling system according to Example 16, wherein controlling the operation of the indirect evaporative cooling unit according to the load state further comprises:

[0142] In response to determining that the cooling system is in a third load state, the fourth valve and the fifth valve of the indirect evaporative cooling unit are controlled to open and the heat exchange component and the auxiliary refrigeration component of the indirect evaporative cooling unit are controlled to operate.

[0143] Example 20. An electronic device comprising:

[0144] a memory for storing one or more computer instructions; and

[0145] A processor for executing the one or more computer instructions stored in the memory to implement the method according to any one of Examples 12 to 19.

[0146] Example 21. A computer-readable storage medium having one or more computer instructions stored thereon, wherein the one or more computer instructions are executed by a processor to implement a method according to any one of Examples 12 to 19.

[0147] Example 22. A computer program product comprising computer executable instructions, wherein the computer executable instructions, when executed by a processor, implement the method according to any one of Examples 12 to 19.

[0148] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A cooling system (100), include: Air supply channel (10); Return air duct (20); an exhaust branch (21) which is in communication with the return air channel (20) and comprises a first valve (41); the exhaust branch (21) is capable of exhausting at least part of the indoor return air in the return air channel (20) to the outside when the first valve (41) is opened; a return air branch (22) which is in communication with the return air channel (20) and the air supply channel (10) and comprises a second valve (42); the return air branch (22) is capable of allowing at least a portion of the indoor return air in the return air channel (20) to flow to the air supply channel (10) when the second valve (42) is opened; A fresh air passage (30) is communicated with the air supply passage (10) and comprises a third valve (43); the fresh air passage (30) is capable of allowing outdoor fresh air to flow into the air supply passage (10) when the third valve (43) is opened; An environment detection component (50) is arranged to generate an environment signal for indicating indoor and outdoor environment conditions, the environment signal at least comprising a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value; as well as A processing unit (60) is coupled to the environment detection component (50), the first valve (41), the second valve (42) and the third valve (43), and is configured to control the states of the first valve (41), the second valve (42) and the third valve (43) at least partially based on the environment signal.

2. The cooling system (100) according to claim 1, wherein the processing unit (60) is further configured to: Determine whether the outdoor temperature value and the indoor humidity value are within a safety threshold range according to the environmental signal and generate corresponding status information; and The states of the first valve (41), the second valve (42) and the third valve (43) are controlled according to the state information.

3. The cooling system (100) according to claim 2, wherein the processing unit (60) is further configured to: In response to determining that the outdoor temperature value is lower than a safety temperature threshold and the indoor humidity value is higher than a safety humidity threshold, state information indicating that the cooling system (100) is in a low temperature and high humidity environment is generated.

4. The cooling system (100) according to claim 1, wherein the environment detection component (50) include: An outdoor temperature detection unit (51) is arranged to generate the first temperature signal indicating the outdoor ambient temperature value; as well as The indoor humidity detection unit (52) is arranged to generate the first humidity signal indicating the indoor environment humidity value.

5. The cooling system (100) according to claim 4, wherein the environment detection component (50) further include: The supply air temperature detection unit (53) is arranged to generate a second temperature signal indicating a supply air temperature value at the inlet of the supply air channel (10), and the processing unit (60) is further configured to: acquiring the second temperature signal; and The openings of the first valve (41) and the third valve (43) are controlled according to the supply air temperature value and the supply air temperature threshold value to adjust the ratio of outdoor fresh air and indoor return air flowing into the air supply channel (10).

6. The cooling system (100) according to claim 4, wherein the environment detection component (50) further include: The return air temperature detection unit (54) is arranged to generate a third temperature signal indicating the return air temperature value at the outlet of the return air duct (20).

7. The cooling system (100) according to claim 6, further comprising: include: An indirect evaporative cooling unit (70) is in communication with the supply air channel (10) and the return air channel (20), and is coupled to the processing unit (60), and the processing unit (60) is also configured to control the operation of the indirect evaporative cooling unit (70) at least partially based on the environmental signal.

8. The cooling system (100) according to claim 7, wherein the indirect evaporative cooling unit (70) include: a cooling channel (71), wherein an inlet of the cooling channel (71) is communicated with the return air channel (20), an outlet of the cooling channel (71) is communicated with the supply air channel (10), and comprises a fourth valve (44); and A heat exchange component (72) is coupled to the cooling channel (71) and is capable of exchanging heat between the indoor return air in the cooling channel (71) and the outdoor air when the fourth valve (44) is opened.

9. The cooling system (100) according to claim 8, wherein the indirect evaporative cooling unit (70) further comprises: include: A spray assembly (73) is arranged on one side of the heat exchange assembly (72) and comprises a fifth valve (45). The spray assembly (73) can spray cooling water onto the heat exchange assembly (72) when the fifth valve (45) is opened.

10. The cooling system (100) according to claim 9, wherein the indirect evaporative cooling unit (70) further comprises: include: An auxiliary refrigeration component (74) is coupled to the cooling channel (71) and is capable of exchanging heat with the indoor return air in the cooling channel (71).

11. The cooling system (100) according to any one of claims 1 to 10, further comprising: include: A filter assembly (80) is arranged in the fresh air passage (30) to filter the outdoor fresh air passing through the fresh air passage (30).

12. A method for controlling a cooling system, the cooling system comprising an air supply channel (10), a return air channel (20), an exhaust branch (21), a return air branch (22), a fresh air channel (30) and an environment detection component (50); the exhaust branch (21) is connected to the return air channel (20) and comprises a first valve (41), and the exhaust branch (21) is capable of discharging at least part of the indoor return air in the return air channel (20) to the outdoors when the first valve (41) is opened; the return air branch (22) is connected to the return air channel (20) and the air supply channel (10) and comprises a second valve (42), and the return air branch (22) is capable of discharging at least part of the indoor return air in the return air channel (20) to the outdoors when the first valve (41) is opened. (22) when the second valve (42) is in an open state, at least a portion of the indoor return air in the return air channel (20) can flow to the supply air channel (10); the fresh air channel (30) is connected to the supply air channel (10) and includes a third valve (43), and the fresh air channel (30) can flow outdoor fresh air to the supply air channel (10) when the third valve (43) is in an open state; the environmental detection component (50) is arranged to generate an environmental signal for indicating indoor and outdoor environmental conditions, and the environmental signal at least includes a first temperature signal indicating an outdoor temperature value and a first humidity signal indicating an indoor humidity value; the method include: Acquire the environmental signal from the environmental detection component; as well as The states of the first valve, the second valve, and the third valve are controlled based at least in part on the environmental signal.

13. An electronic device, include: a memory for storing one or more computer instructions; as well as A processor, configured to execute the one or more computer instructions stored in the memory to implement the method according to claim 12.

14. A computer-readable storage medium having one or more computer instructions stored thereon, wherein the one or more computer instructions are executed by a processor to implement the method according to claim 12.

15. A computer program product comprising computer executable instructions, wherein the computer executable instructions implement the method according to claim 12 when executed by a processor.

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