Indirect evaporative cooling unit, control method, device, equipment, medium and product

Abstract

The invention provides an indirect evaporative cooling unit, a control method, device and equipment, a medium and a product, and relates to the technical field of artificial intelligence, in particular to the technical fields of cloud computing, data centers, refrigeration technologies and the like. The indirect evaporative cooling unit comprises a heat exchange core used for conducting heat exchange on secondary side inlet air conveyed by an air inlet cavity and primary side return air conveyed by an air return cavity so as to obtain secondary side exhaust air and primary side supplied air, conveying the secondary side exhaust air through an air exhaust cavity and conveying the primary side supplied air through an air supply cavity; the air supplementing system is arranged in the cavity and used for supplementing the primary side air supply or the primary side return air after being started; the cavity comprises at least one of the air inlet cavity, the air return cavity, the air exhaust cavity and the air supply cavity; the humidity control system is partially arranged in the air supply cavity and used for conducting humidity control on the primary side air supply. The integration and the refrigeration effect can be improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of artificial intelligence, in particular to the technical fields of cloud computing, data center, refrigeration technology, and the like, and more particularly to a refrigeration system, a control method and device, equipment, a medium and a product. BACKGROUND

[0002] Indirect evaporative cooling is a cooling method, and its core is a heat exchange core. The core has two air channels isolated from each other, which can be referred to as a secondary air channel and a primary air channel. When outdoor fresh air (secondary air) flows through the secondary air channel, the natural cooling capacity of the outdoor fresh air or the cooling capacity generated by water film evaporation can be used to cool the indoor air (primary air) flowing through the primary air channel through wall conduction. SUMMARY

[0003] The present disclosure provides an indirect evaporative cooling unit, a control method and device, equipment, a medium and a product.

[0004] According to an aspect of the present disclosure, an indirect evaporative cooling unit is provided, comprising: a heat exchange core for heat exchange of secondary side air supplied by an air inlet cavity and primary side return air supplied by a return air cavity to obtain secondary side exhaust air and primary side supply air, and for conveying the secondary side exhaust air through an exhaust air cavity and the primary side supply air through a supply air cavity; a makeup air system arranged in the cavity for supplying makeup air to the primary side supply air or the primary side return air after being turned on; the cavity comprises at least one of the air inlet cavity, the return air cavity, the exhaust air cavity and the supply air cavity; and a humidity control system arranged in the supply air cavity for humidity control of the primary side supply air.

[0005] According to another aspect of the present disclosure, a control method is provided, which is applied to the unit as described in any of the above aspects, comprising: determining a current operation mode; and controlling the unit according to the current operation mode.

[0006] According to another aspect of the present disclosure, a control device is provided, which is applied to the unit as described in any of the above aspects, comprising: a determination module for determining a current operation mode; and a control module for controlling the unit according to the current operation mode.

[0007] According to another aspect of the present disclosure, an electronic device is provided, comprising: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method as described in any of the above aspects.

[0008] According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium storing computer instructions, wherein the computer instructions are used to cause the computer to perform the method according to any one of the aspects above.

[0009] According to another aspect of the present disclosure, there is provided a computer program product comprising a computer program which, when executed by a processor, implements the method according to any one of the aspects above

[0010] The present disclosure can improve integration and refrigeration effect.

[0011] It should be understood that the matters described in this section are not intended to identify key or essential features of the embodiments of the present disclosure, nor are they used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings are used to better understand the present scheme, and do not constitute a limitation on the present disclosure. Among them:

[0013] Figure 1 is a schematic diagram according to a first embodiment of the present disclosure;

[0014] Figure 2 is a rotating schematic diagram of an evaporator and a condenser provided according to an embodiment of the present disclosure;

[0015] Figure 3 is a schematic diagram according to a second embodiment of the present disclosure;

[0016] Figure 4 is a schematic diagram of a humidity control system provided according to an embodiment of the present disclosure;

[0017] Figure 5 is a schematic diagram of an evaporator and a condenser provided according to an embodiment of the present disclosure;

[0018] Figure 6 is a schematic diagram according to a third embodiment of the present disclosure;

[0019] Figure 7 is a schematic diagram according to a fourth embodiment of the present disclosure;

[0020] Figure 8 is a flowchart schematic diagram in each operating mode provided according to an embodiment of the present disclosure;

[0021] Figure 9 is a schematic diagram according to a fifth embodiment of the present disclosure;

[0022] Figure 10 is a schematic diagram of an electronic device used to implement the control method of the embodiments of the present disclosure. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present disclosure are described herein with reference to the accompanying drawings, which are presented for the purpose of illustration and description. It will be appreciated by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Also, for the purpose of clarity and the brevity, the description below omits the description of well-known functions and structures.

[0024] In the scenario of deploying an indirect evaporative cooling unit in a data center, in some cases, air supplement or humidity control is needed.

[0025] In the related art, a fresh air unit, a humidifier and a dehumidifier are usually added outside the indirect evaporative cooling unit.

[0026] However, this way needs additional cost and energy consumption, and is easy to cause heat accumulation and affect the refrigeration effect.

[0027] Figure 1 is a schematic diagram according to the first embodiment of the present disclosure, and the embodiment provides an indirect evaporative cooling unit.

[0028] As shown in Figure 1 The unit 100 includes a heat exchange core 101, an air supplement system 102 and a humidity control system 103.

[0029] The heat exchange core 101 is used for heat exchange of secondary side air inlet delivered by an air inlet cavity and primary side return air delivered by a return air cavity, so as to obtain secondary side exhaust air and primary side supply air, and deliver the secondary side exhaust air through an exhaust air cavity and deliver the primary side supply air through a supply air cavity.

[0030] The air supplement system 102 is arranged in a cavity and is used for air supplement of the primary side supply air or the primary side return air after being turned on; the cavity includes at least one of the air inlet cavity, the return air cavity, the exhaust air cavity and the supply air cavity.

[0031] The humidity control system 103 is partially arranged in the supply air cavity and is used for humidity control of the primary side supply air.

[0032] In the indirect evaporative cooling scenario, air is divided into secondary side air and primary side air, the secondary side air is divided into secondary side air inlet and secondary side exhaust air, and the primary side air is divided into primary side return air and primary side supply air.

[0033] The secondary-side air inlet is usually outdoor fresh air or outdoor fresh air after being cooled, which serves as cold source air; wherein the outdoor fresh air (outdoor fresh air) usually refers to natural air outside a machine room or a building, which is not used through indoor circulation and meets air quality standards (low dust, low humidity, and pollution standards).

[0034] The primary-side return air is usually indoor air to be cooled, which is cooled by the secondary-side air inlet.

[0035] The secondary-side air inlet and the primary-side return air do not directly contact each other, but indirectly exchange heat through the wall of the heat exchange core. In the heat exchange process, the secondary-side air inlet absorbs cold from the primary-side return air, and the primary-side return air absorbs cold from the secondary-side air inlet. As a result, after heat exchange, the secondary-side air inlet is heated and the primary-side return air is cooled.

[0036] The secondary-side exhaust air is obtained by heating the secondary-side air inlet, which is usually discharged to the outside.

[0037] The primary-side supply air is obtained by cooling the primary-side return air, which is delivered to the equipment to be cooled, such as servers in a data center.

[0038] The air inlet cavity is used to deliver the secondary-side air inlet; the air outlet cavity is used to deliver the secondary-side exhaust air;

[0039] The return air cavity is used to deliver the primary-side return air; the supply air cavity is used to deliver the primary-side supply air.

[0040] In the heat exchange process, air supplement may be needed, such as air supplement for the primary-side supply air or the primary-side return air. Therefore, the embodiment further provides an air supplement system, which is openable or closable, and when opened, the air supplement system supplements the primary-side supply air or the primary-side return air.

[0041] The air supplement system is arranged in the cavity, Figure 1 For example, the air supplement system arranged in the supply air cavity can include multiple groups of air fans and corresponding air valves, and different groups of air fans can be arranged in different cavities.

[0042] In some scenarios, humidity control may be needed, such as humidification when the ambient humidity is low, or dehumidification when the humidity is high. Therefore, the embodiment further provides a humidity control system for controlling the humidity of the primary-side supply air, i.e., humidifying or dehumidifying the primary-side supply air.

[0043] Part of the humidity control system is arranged in the supply air cavity, and the rest is arranged outside the supply air cavity. The part arranged in the supply air cavity can spray a specific solution (such as lithium bromide solution) to the primary side supply air for dehumidification or humidification based on the specific solution. The rest can store, transport, regenerate, and the like, the specific solution. The rest can include a part in the exhaust air cavity and a part outside the cavity. For details, see the subsequent specific description of the humidity control system.

[0044] In this embodiment, the air supplement system and the humidity control system are arranged inside the indirect evaporative cooling unit, which can improve the integration of the unit and improve the refrigeration effect. In addition, the air supplement system is arranged in the cavity, which can effectively utilize the empty space in the cavity and improve the space utilization.

[0045] In some embodiments, the exhaust air cavity and the supply air cavity are isolated from each other by a first partition;

[0046] The air supplement system includes a first fan and a first air valve, the first air valve is arranged on the first partition, and the first fan is arranged in the exhaust air cavity or the supply air cavity;

[0047] The first fan and the first air valve are used to supplement the primary side supply air with the secondary side exhaust air after being turned on.

[0048] The first fan can be a supply fan or an exhaust fan. Since the secondary side exhaust air is used to supplement the primary side supply air, if the first fan is a supply fan, it is arranged in the exhaust air cavity, and if the first fan is an exhaust fan, it is arranged in the supply air cavity.

[0049] The first fan and the first air valve are used to supplement the primary side supply air with the secondary side exhaust air after being turned on, that is, part of the secondary side exhaust air is transported into the supply air cavity.

[0050] Specifically, the first fan and the first air valve can be turned on in the first operation mode, and the first operation mode includes that the outdoor dry-bulb temperature is less than or equal to a first threshold value, for example, 16℃. The specific scenario is, for example, winter.

[0051] That is, in winter, the first fan and the first air valve can be turned on to supplement the primary side supply air with the secondary side exhaust air.

[0052] Since the temperature is low in winter, supplementing the primary side supply air with the secondary side exhaust air at this time can effectively avoid the problem of condensation in the indoor (such as the data center room) due to the too low temperature of the secondary side inlet air, and ensure the stability of the room operation.

[0053] In some embodiments, the inlet air cavity and the return air cavity are isolated from each other by a second partition;

[0054] The air supplement system comprises a second air fan and a second air valve, the second air valve is arranged on the second partition plate, and the second air fan is arranged in the air inlet cavity or the air return cavity.

[0055] The second air fan and the second air valve are used for supplementing the air return of the primary side with the air inlet of the secondary side after being turned on.

[0056] The second air fan can be a supply fan or an exhaust fan. Since the air return of the primary side needs to be supplemented with the air inlet of the secondary side, if the second air fan is a supply fan, it is arranged in the air inlet cavity, and if the second air fan is an exhaust fan, it is arranged in the air return cavity.

[0057] The second air fan and the second air valve supplement the air return of the primary side with the air inlet of the secondary side after being turned on, that is, part of the air inlet of the secondary side is transported into the air return cavity.

[0058] Specifically, the second air fan and the second air valve can be turned on in the second operation mode or the third operation mode. The second operation mode includes that the outdoor dry-bulb temperature is greater than a first threshold value and the outdoor wet-bulb temperature is less than or equal to a second threshold value, for example, the first threshold value is 16°C, and the second threshold value is 19°C. The specific scenario is, for example, spring and autumn; the third operation mode includes that the outdoor wet-bulb temperature is greater than the second threshold value, and the specific scenario is, for example, summer.

[0059] That is, in spring and autumn, or in summer, the second air fan and the second air valve can be turned on to supplement the air return of the primary side with the air inlet of the secondary side.

[0060] At this time, the temperature of the air inlet of the secondary side is lower than the temperature of the air return of the primary side, and after the above-mentioned air supplement, the air return of the primary side is mixed with the air inlet of the secondary side, so that the temperature of the air return of the primary side to be cooled can be reduced, thereby reducing the heat load to be handled by the cooling unit and reducing the burden on the unit.

[0061] Further, in some embodiments, the unit can further comprise a third air fan and a third air valve.

[0062] The air supply cavity and the air inlet cavity are isolated from each other by a third partition plate, the third air valve is arranged on the third partition plate, and the third air fan is arranged in the air supply cavity or the air inlet cavity; the third air fan and the third air valve are used for transporting part of the air supply of the primary side to the air inlet cavity and mixing with the air inlet of the secondary side in the air inlet cavity after being turned on.

[0063] The third air fan can be a supply fan or an exhaust fan. Since the air supply of the primary side needs to be transported to the air inlet cavity, if the third air fan is a supply fan, it is arranged in the air supply cavity, and if the third air fan is an exhaust fan, it is arranged in the air inlet cavity.

[0064] The third air fan and the third air valve, after being turned on, deliver part of the primary side supply air to the air inlet chamber and mix with the secondary side supply air in the air inlet chamber.

[0065] Specifically, the third air fan and the third air valve can be turned on when the second air fan and the second air fan are turned on, i.e., in the second operation mode or the third operation mode, the second air fan and the second air valve are turned on, and at this time, the third air fan and the third air valve can also be turned on.

[0066] At this time, introducing part of the primary side supply air into the air inlet chamber can make the indirect evaporative cooling approach the dew point evaporative cooling and improve the cooling efficiency.

[0067] Further, when the second air fan and the third air fan are turned on at the same time, the air speed of the second air fan is controlled to be greater than the air speed of the third air fan.

[0068] In this way, it can be ensured that the supply air amount is greater than the return air amount, and the positive pressure condition of the machine room is ensured, i.e., the indoor air pressure is higher than the outdoor air pressure, so as to avoid outdoor pollutants from entering the indoor and ensure the cleanliness of the machine room.

[0069] In some embodiments, the cooling unit further comprises:

[0070] A spraying system arranged in the air inlet chamber and used to cool outdoor fresh air to obtain the secondary side supply air after being turned on.

[0071] The spraying system comprises a wet film, and after the spraying system is turned on, the outdoor fresh air first enters the spraying system and directly contacts the water in the wet film to achieve evaporative cooling, and the cooled outdoor fresh air is used as the secondary side supply air, and then the cooled outdoor fresh air is used to cool the primary side return air.

[0072] When the spraying system is not turned on, the outdoor fresh air can be directly used as the secondary side supply air, and at this time, the natural cold energy of the outdoor fresh air is used to cool the primary side return air.

[0073] The spraying system described above can also be turned on or turned off according to different operation modes.

[0074] Specifically, in the first operation mode (e.g., winter), the spraying system can be turned off, and at this time, since the outdoor fresh air temperature is low, the natural cold energy of the outdoor fresh air can be used to cool the primary side return air.

[0075] In the second operation mode (e.g., spring and autumn) or the third operation mode (e.g., summer), the spraying system can be turned on, and at this time, the cooled outdoor fresh air is used to cool the primary side return air.

[0076] In this way, the spraying system can be turned on or turned off according to actual needs, so that a better cooling effect is achieved with lower power consumption.

[0077] In some embodiments, the cooling unit further comprises:

[0078] an evaporator arranged in the air supply cavity, the evaporator being in an initial state or a rotating state through an evaporator rotating shaft, and the rotating state having a smaller air outlet resistance to the primary side air supply than the initial state;

[0079] a condenser arranged in the air exhaust cavity, the condenser being in an initial state or a rotating state through a condenser rotating shaft, and the rotating state having a smaller air outlet resistance to the secondary side air exhaust than the initial state.

[0080] In the formula, the reference Figure 2 , Figure 2 is a rotating schematic diagram of the evaporator and the condenser according to an embodiment of the present disclosure.

[0081] As shown in Figure 2 , the evaporator 201 is arranged in the air supply cavity, and the condenser 202 is arranged in the air exhaust cavity. The air outlet of the heat exchange core includes the air outlet 203 of the primary side air supply and the air outlet 204 of the secondary side air exhaust, and these air outlets are arranged obliquely relative to the horizontal plane.

[0082] Taking the evaporator as an example, the initial state means that the evaporator is parallel to the air outlet 201 of the primary side air supply and is in an inclined state relative to the horizontal plane; the rotating state means the state of the evaporator after rotation, which is in a parallel state relative to the horizontal plane. When in the rotating state, the air outlet resistance to the primary side air supply is smaller than that in the initial state.

[0083] The above-mentioned evaporator and condenser can also be turned on or turned off and adjusted according to different operating modes.

[0084] Specifically, in the first operating mode (such as winter), the evaporator and the condenser can be turned off, and in combination with the description of the spraying system, the spraying system can also be turned off. At this time, the natural cold quantity of the outdoor fresh air is used to cool the primary side return air, and the evaporator and the condenser are controlled to be in the rotating state, so as to reduce the resistance to the primary side air supply and the secondary side air exhaust, and improve the air supply and air exhaust effect.

[0085] In the second operating mode (such as spring and autumn), the evaporator and the condenser can be turned off, and in combination with the description of the spraying system, the spraying system can also be turned on. At this time, the cooled outdoor fresh air is used to cool the primary side return air, and the evaporator and the condenser are controlled to be in the rotating state, so as to reduce the resistance to the primary side air supply and the secondary side air exhaust, and improve the air supply and air exhaust effect.

[0086] In the third operation mode (such as summer), the evaporator and the condenser can be turned on, and the spraying system can also be turned on in combination with the description of the spraying system. At this time, the outdoor fresh air after cooling and the mechanical refrigeration mode (through the evaporator and the condenser) are used to cool the primary side return air, and the evaporator and the condenser are both controlled to be in the initial state to effectively cool the primary side supply air based on the evaporator.

[0087] In this way, the states of the evaporator and the condenser can be adjusted according to actual needs to meet different scene requirements.

[0088] Figure 3 is a schematic diagram according to the second embodiment of the present disclosure, and the embodiment provides an indirect evaporative cooling unit.

[0089] In the embodiment, the unit 300 includes a heat exchange core 301, a spraying system 302, an evaporator 303, a condenser 304, a humidity control system 305, and a makeup air system.

[0090] The makeup air system includes a first fan 3061 and a first air valve 3062, a second fan 3063 and a second air valve 3064, and a third fan 3065 and a third air valve 3066.

[0091] The first air valve 3062 is arranged on a first partition plate between the exhaust air chamber and the supply air chamber, the second air valve 3064 is arranged on a second partition plate between the inlet air chamber and the return air chamber, and the third air valve 3066 is arranged on a third partition plate between the inlet air chamber and the supply air chamber.

[0092] In the embodiment, the first fan, the second fan, and the third fan are all air suction fans. Therefore, the first fan 3061 is arranged in the supply air chamber, the second fan 3063 is arranged in the return air chamber, and the third fan 3065 is arranged in the supply air chamber.

[0093] In addition, fans can also be arranged in the return air chamber and the inlet air chamber to provide conveying power, and filters can also be arranged in the supply air chamber to filter the primary side supply air after humidification or dehumidification.

[0094] The above components can perform corresponding operations according to the current operation mode.

[0095] The current operation mode can be automatically detected by the unit, for example, the current operation mode can be determined according to the current outdoor dry-bulb temperature and the outdoor wet-bulb temperature.

[0096] Specifically, when the outdoor dry-bulb temperature is less than or equal to a first threshold value, it is determined that the current operation mode is the first operation mode, and the specific scene at this time is, for example, winter;

[0097] When the outdoor dry-bulb temperature is greater than the first threshold value and the outdoor wet-bulb temperature is less than or equal to the second threshold value, it is determined that the current operation mode is the second operation mode, and a specific scenario at this time is, for example, spring and autumn;

[0098] When the outdoor wet-bulb temperature is greater than the second threshold value, it is determined that the current operation mode is the third operation mode, and a specific scenario at this time is, for example, summer.

[0099] Based on the above operation modes, the components perform the following processes:

[0100] In the first operation mode (for example, winter), the following is performed:

[0101] The spray system 302 is closed, the outdoor fresh air is directly used as the secondary side air inlet, the heat exchange core 301 uses the secondary side air inlet to cool the primary side return air to obtain the secondary side exhaust air and the primary side supply air;

[0102] The first fan 3061 and the first air valve 3062 are opened, and the secondary side exhaust air is used to supplement the primary side supply air;

[0103] The evaporator 303 and the condenser 304 are closed, and the evaporator 303 and the condenser 304 are both controlled to be in a rotating state; and

[0104] The humidity control system 304 is controlled to be in a humidification mode. For specific implementation of the humidity control system being in the humidification mode or the dehumidification mode, please refer to the subsequent relevant description.

[0105] In the second operation mode (for example, spring and autumn), the following is performed:

[0106] The spray system 302 is opened, the outdoor fresh air is cooled by the spray system, and the cooled outdoor fresh air is used as the secondary side air inlet; the heat exchange core 301 uses the secondary side air inlet to cool the primary side return air to obtain the secondary side exhaust air and the primary side supply air;

[0107] The second fan 3063 and the second air valve 3064 are opened, and the secondary side air inlet is used to supplement the primary side return air; further, the third fan 3065 and the third air valve 3066 can also be opened, and the second fan speed is controlled to be greater than the third fan speed;

[0108] The evaporator 303 and the condenser 304 are closed, and the evaporator 303 and the condenser 304 are both controlled to be in a rotating state;

[0109] The humidity control system 304 is controlled to be in a dehumidification mode.

[0110] In the third operation mode (for example, summer), the following is performed:

[0111] The spray system 302 is turned on to cool the outdoor fresh air. The cooled outdoor fresh air is used as the secondary side intake air. The heat exchange core 301 uses the secondary side intake air to cool the primary side return air, resulting in secondary side exhaust air and primary side supply air.

[0112] The second fan 3063 and the second air valve 3064 are turned on to supplement the primary side return air by secondary side air intake; furthermore, the third fan 3065 and the third air valve 3066 can also be turned on, and the wind speed of the second fan is controlled to be greater than that of the third fan.

[0113] Turn on the evaporator 303 and the condenser 304, and control both the evaporator 303 and the condenser 304 to be in the initial state;

[0114] The humidity control system 304 is in dehumidification mode.

[0115] In this way, the corresponding components can be turned on or off in different operating modes to meet the needs of different scenarios.

[0116] Figure 4 This is a schematic diagram of a humidity control system provided according to an embodiment of the present disclosure.

[0117] like Figure 4 As shown, the humidity control system includes: a humidity zone 401, a regeneration zone 402, a humidity spray chamber 403, a regeneration spray chamber 404, and an isolation component. The isolation component is disposed between the humidity zone and the regeneration zone and includes: a telescopic baffle 405 and a water-liquid isolation membrane 406. Furthermore, a heating module 407 can also be provided in the humidity zone.

[0118] The humidity spray chamber 403 is disposed inside the air supply chamber, the regeneration spray chamber 404 is disposed inside the exhaust chamber, and the humidity zone 401, the regeneration zone 402 and the isolation component are disposed outside the chamber.

[0119] The telescopic baffle 405 is used to isolate the humidity zone and the regeneration zone when it is opened;

[0120] The water-liquid separation membrane 406 is used to allow water to permeate unidirectionally from the humidity zone to the regeneration zone after the telescopic baffle is closed;

[0121] The humidity zone 401 is used to deliver a specific solution in a first state to the humidity spray chamber when the telescopic baffle is open, or to deliver a specific solution in a second state to the humidity spray chamber when the telescopic baffle is closed.

[0122] The humidity spray chamber 403 is used to humidify the primary side supply air with a specific solution in the first state, or to dehumidify the primary side supply air with a specific solution in the second state.

[0123] The regeneration area 402 is used to be in an empty state when the telescopic baffle is opened, and to deliver the regeneration solution to the regeneration spray chamber when the telescopic baffle is closed.

[0124] The regeneration spray chamber 403 is used to dehumidify the regeneration solution, so as to regenerate the specific solution in the second state by the dehumidified regeneration solution.

[0125] The heating module 407 is used to heat the specific solution in the first state after being opened.

[0126] The telescopic baffle is openable or closable, and the humidity control system is controlled to be in a humidification mode or a dehumidification mode by controlling the opening or closing of the telescopic baffle. When the telescopic baffle is opened, the humidity control system is in the humidification mode, and when the telescopic baffle is closed, the humidity control system is in the dehumidification mode.

[0127] The opening of the telescopic baffle means that the regeneration area is isolated from the humidity area, that is, the liquids in the regeneration area and the humidity area are isolated.

[0128] After the telescopic baffle is closed, there is liquid flow between the regeneration area and the humidity area. Since the water liquid isolation film is also provided, the flow is unidirectional flow, specifically, the water in the humidity area unidirectionally permeates into the regeneration area.

[0129] The humidity area and the humidity spray chamber can form a circulation system, through which the primary side supply air is humidified or dehumidified; the regeneration area and the regeneration spray chamber form another circulation system, through which the specific solution in the humidity area is regenerated.

[0130] The hygroscopicity of the specific solution in the second state is higher than that of the specific solution in the first state.

[0131] The specific solution can be lithium bromide solution, lithium chloride solution, triethylene glycol solution or calcium chloride solution, etc.

[0132] The type of the regeneration solution can be the same as that of the specific solution, for example, the specific solution and the regeneration solution can both be lithium bromide solution. After the telescopic baffle is closed, the water liquid isolation film can unidirectionally permeate the water from the humidity area to the regeneration area, at this time, the concentration of the regeneration solution is lower than that of the specific solution.

[0133] Taking lithium bromide solution as an example, the higher the concentration, the better the hygroscopicity, and the lower the temperature, the better the hygroscopicity. Based on this, the concentration of the solution in the second state is higher than that in the first state, and the temperature of the solution in the second state is lower than that in the first state.

[0134] The humidity zone and the humidity spraying chamber, and the regeneration zone and the regeneration spraying chamber, can be powered by a liquid pump to deliver the corresponding solution to the corresponding spraying chamber, and the liquid can be delivered from the spraying chamber to the corresponding zone through a liquid return pipe.

[0135] Based on the above architecture, in the humidification mode, as in the first operation mode described above, the following is performed:

[0136] The telescopic baffle is opened to isolate the regeneration zone and the humidity zone, and the regeneration zone is emptied, leaving only the humidity zone, and the concentration of the specific solution is reduced by injecting water. Further, the heating module can be turned on to heat the specific solution. In this way, a low-concentration high-temperature specific solution can be obtained, which is then delivered to the humidity spraying chamber. The humidity spraying chamber sprays the low-concentration high-temperature specific solution into the supply air cavity. Since the low-concentration high-temperature specific solution has high humidification capacity, it can achieve humidification of the primary side supply air. In addition, the heating module can also prevent the specific solution from freezing in a low-temperature environment, ensuring stable operation of the system in the humidification mode.

[0137] In the dehumidification mode, as in the second operation mode or the third operation mode described above, the following is performed:

[0138] The telescopic baffle is closed, and at this time, the water in the humidity zone is unidirectionally permeated to the regeneration zone through the water liquid isolation membrane, thereby increasing the concentration of the specific solution in the humidity zone. Further, if the evaporator is turned on (as in the third operation mode), the specific solution can also be cooled, thereby obtaining a high-concentration low-temperature specific solution. The high-concentration low-temperature specific solution is delivered to the humidity spraying chamber, and the humidity spraying chamber sprays the high-concentration low-temperature specific solution into the supply air cavity. Since the high-concentration low-temperature specific solution has high dehumidification capacity, it can achieve dehumidification of the primary side supply air.

[0139] In addition, after the water is unidirectionally permeated to the regeneration zone, the concentration of the regeneration solution in the regeneration zone is reduced. Further, if the condenser is turned on (as in the third operation mode), the regeneration solution can also be heated, thereby obtaining a low-concentration high-temperature specific solution. The low-concentration high-temperature specific solution has high humidification capacity, so it is delivered to the regeneration spraying chamber and sprayed, releasing water vapor into the surrounding environment, obtaining a solution with increased concentration. This solution with increased concentration can reabsorb the water unidirectionally permeated from the humidity zone, achieving regeneration.

[0140] In this embodiment, based on the above humidity control system, the telescopic baffle can be opened or closed to simply and efficiently achieve humidification or dehumidification operation.

[0141] Further, the specific solution can be delivered by the evaporator, and the regeneration solution can be delivered by the condenser.

[0142] Figure 5 are schematic diagrams of an evaporator and a condenser according to an embodiment of the present disclosure.

[0143] As shown in Figure 5 , the condenser has a condenser rotating shaft 501, based on which the condenser is controlled to be in an initial state or a rotating state. In addition, a refrigerant pipe and a regeneration solution pipe are arranged therein, refrigerant is input from a refrigerant inlet 5021 to the refrigerant pipe and output from a refrigerant outlet 5022, and then the refrigerant can be delivered into the evaporator to realize refrigeration through phase change (liquid to gas) of the refrigerant. The regeneration solution is input from a regeneration solution inlet 5031 to the regeneration solution pipe and output from a regeneration solution outlet 5032 to realize circulation of the regeneration solution between the regeneration zone and the regeneration spray chamber, and regeneration of the specific solution is realized through the circulation.

[0144] The evaporator has an evaporator rotating shaft 504, based on which the evaporator is controlled to be in an initial state or a rotating state. In addition, a refrigerant pipe and a specific solution pipe are arranged therein, refrigerant is input from a refrigerant inlet 5051 to the refrigerant pipe and output from a refrigerant outlet 5052, and then the refrigerant can be delivered into the condenser to realize heat dissipation through phase change (gas to liquid) of the refrigerant. The specific solution is input from a specific solution inlet 5061 to the specific solution pipe and output from a specific solution outlet 5062 to realize circulation of the specific solution between the humidity zone and the humidity spray chamber, and humidification or dehumidification of the primary side air supply is realized through the circulation.

[0145] In this embodiment, the one-way permeation characteristic of the water liquid separation membrane is utilized to enable water to automatically and unidirectionally permeate from the humidity zone to the regeneration zone, so as to ensure that the solution in the humidity zone always maintains a high concentration state in the dehumidification mode, realize automatic regeneration of the solution, and simplify the system structure, thereby improving the reliability and stability of the system.

[0146] At the same time, by controlling the opening or closing of the telescopic baffle, the humidification mode and the dehumidification mode can be conveniently switched. Specifically, when dehumidification is needed, the telescopic baffle is closed, the regeneration zone and the humidity zone are retained, dehumidification is performed based on the specific solution in the humidity zone, and the specific solution is regenerated based on the regeneration solution in the regeneration zone; when humidification is needed, the telescopic baffle is opened, only the humidity zone is retained, and the solution concentration is lowered through water injection to realize humidification operation, thereby meeting the humidity adjustment requirements under different working conditions.

[0147] By selecting lithium bromide solution as the specific solution, the temperature and concentration related characteristics of the lithium bromide solution can be utilized to realize humidity control, i.e., low-concentration and high-temperature solution is used for heating, and high-concentration and low-temperature solution is used for dehumidification.

[0148] In addition, the temperature of the solution can be controlled by an evaporator, a condenser or a heating module, the solution humidification, dehumidification and regeneration capacity can be improved, and the precision and efficiency of humidity control are improved.

[0149] Figure 6 is a schematic diagram according to a third embodiment of the present disclosure, and the embodiment provides an indirect evaporative cooling unit, which comprises an execution system 601 and a controller 602.

[0150] The execution system 601 is used to execute a refrigeration function, and the controller 602 is used to control the execution system 601.

[0151] The execution system 601 can be the unit shown in the above Figure 1 or Figure 3 .

[0152] The controller 602 is used to control the unit according to a current operation mode.

[0153] Further, the controller is specifically used for:

[0154] In a first operation mode, the spray system in the unit is closed, the first fan and the first air valve in the unit are opened to supplement the primary side supply air with the secondary side exhaust air, the telescopic baffle in the unit is opened, and the evaporator and the condenser in the unit are closed, and the evaporator and the condenser are controlled to be in a rotating state; or,

[0155] In a second operation mode, the spray system in the unit is opened, the second fan and the second air valve in the unit are opened to supplement the primary side return air with the secondary side supply air, the telescopic baffle is closed, and the evaporator and the condenser in the unit are closed, and the evaporator and the condenser are controlled to be in a rotating state; or,

[0156] In a third operation mode, the spray system in the unit is opened, the second fan and the second air valve are opened to supplement the primary side return air with the secondary side supply air, the telescopic baffle is closed, and the evaporator and the condenser are opened, and the evaporator and the condenser are controlled to be in an initial state to cool the primary side supply air.

[0157] The first operation mode includes that the outdoor dry-bulb temperature is less than or equal to a first threshold value.

[0158] The second operation mode includes that the outdoor dry-bulb temperature is greater than the first threshold value, and the outdoor wet-bulb temperature is less than or equal to a second threshold value.

[0159] The third operation mode includes that the outdoor wet-bulb temperature is greater than the second threshold value.

[0160] The first threshold is less than the second threshold.

[0161] In this way, the related equipment can be controlled according to the actual working condition, and the actual demand can be met.

[0162] Further, the controller can also be used for:

[0163] In the second operating mode or the third operating mode, a third fan and a third air valve in the unit are turned on to deliver part of the primary side supply air to the air inlet cavity and mix with the secondary side supply air in the air inlet cavity, and the air speed of the second fan is controlled to be greater than the air speed of the third fan; and / or,

[0164] In the first operating mode, a heating module in the unit is turned on.

[0165] In this way, by turning on the third fan and the third air valve and controlling the air speed of the second fan to be greater than the air speed of the third fan, the positive pressure condition of the machine room can be ensured, and the cleanliness can be ensured. In addition, by turning on the heating module, the humidification effect can be further improved.

[0166] Figure 7 is a schematic diagram according to the fourth embodiment of the present disclosure, and the embodiment provides a control method.

[0167] The control method is applied to the cooling unit described in any one of the above, such as Figure 7 As shown, the method comprises:

[0168] 701, determine the current operating mode.

[0169] 702, control the unit according to the current operating mode.

[0170] The current operating mode can be automatically detected by the unit, for example, the current operating mode can be determined according to the current outdoor dry-bulb temperature and the outdoor wet-bulb temperature.

[0171] Specifically, when the outdoor dry-bulb temperature is less than or equal to a first threshold, the current operating mode is determined to be a first operating mode, and the specific scene at this time is, for example, winter;

[0172] When the outdoor dry-bulb temperature is greater than the first threshold and the outdoor wet-bulb temperature is less than or equal to a second threshold, the current operating mode is determined to be a second operating mode, and the specific scene at this time is, for example, spring and autumn;

[0173] When the outdoor wet-bulb temperature is greater than the second threshold, the current operating mode is determined to be a third operating mode, and the specific scene at this time is, for example, summer.

[0174] Afterwards, corresponding control is performed in different operation modes to realize automatic control of the unit.

[0175] Different processes can be performed based on the above various operation modes.

[0176] The specific processes can be seen from Figure 8 .

[0177] Figure 8 Process diagrams in various operation modes are provided according to the embodiments of the present disclosure.

[0178] Suppose the first operation mode is called dry mode, the second operation mode is called wet mode, and the third operation mode is called mixed mode, based on which:

[0179] In the dry mode 801, the following is performed:

[0180] For the air supplement system: the first air fan and the first air valve are opened to supplement the primary side air supply with the secondary side exhaust air;

[0181] For the humidity control system: the telescopic baffle is opened and controlled to be in the humidification mode;

[0182] For the mechanical refrigeration system: the evaporator and the condenser in the mechanical refrigeration system are closed, and the mechanical refrigeration system is controlled to be in the rotating state;

[0183] For the spray system: the spray system is closed.

[0184] In the wet mode 802, the following is performed:

[0185] For the air supplement system: the second air fan and the second air valve are opened, and further, the third air fan and the third air valve can also be opened, and the second air fan speed is controlled to be greater than the third air fan speed;

[0186] For the humidity control system: the telescopic baffle is closed and controlled to be in the dehumidification mode;

[0187] For the mechanical refrigeration system: the evaporator and the condenser in the mechanical refrigeration system are closed, and the mechanical refrigeration system is controlled to be in the rotating state;

[0188] For the spray system: the spray system is opened.

[0189] In the mixed mode 802, the following is performed:

[0190] For the air supplement system: the second air fan and the second air valve are opened, and further, the third air fan and the third air valve can also be opened, and the second air fan speed is controlled to be greater than the third air fan speed;

[0191] For the humidity control system: the telescopic baffle is closed and controlled to be in the dehumidification mode;

[0192] For the mechanical refrigeration system: turn on the evaporator and the condenser in the mechanical refrigeration system, and control them to be in an initial state;

[0193] For the spray system: turn on the spray system.

[0194] In this embodiment, precise control can be achieved based on different operating modes.

[0195] Figure 9 is a schematic diagram according to the fifth embodiment of the present disclosure, and the present embodiment provides a control device. The control device is applied to any one of the units described above, as shown in the figure, the device 900 comprises a determination module 901 and a control module 902. Figure 9 The determination module 901 is configured to determine a current operating mode.

[0196] The determination module 901 is configured to determine a current operating mode.

[0197] The control module 902 is configured to control the unit according to the current operating mode.

[0198] In some embodiments, the control module 902 is specifically configured to:

[0199] In the first operating mode, turn off the spray system in the unit; turn on the first fan and the first air valve in the unit to use the secondary side exhaust air to supplement the primary side supply air; turn on the telescopic baffle in the unit; and turn off the evaporator and the condenser in the unit, and control the evaporator and the condenser to be in a rotating state; or,

[0200] In the second operating mode, turn on the spray system in the unit; turn on the second fan and the second air valve in the unit to use the secondary side supply air to supplement the primary side return air; turn off the telescopic baffle; and turn off the evaporator and the condenser in the unit, and control the evaporator and the condenser to be in a rotating state; or,

[0201] In the third operating mode, turn on the spray system in the unit; turn on the second fan and the second air valve to use the secondary side supply air to supplement the primary side return air; turn off the telescopic baffle; and turn on the evaporator and the condenser, and control the evaporator and the condenser to be in an initial state to cool the primary side supply air;

[0202] The first operating mode comprises: the outdoor dry-bulb temperature is less than or equal to a first threshold value.

[0203] The second operating mode comprises: the outdoor dry-bulb temperature is greater than the first threshold value, and the outdoor wet-bulb temperature is less than or equal to a second threshold value.

[0204] The third operation mode comprises: an outdoor wet bulb temperature is greater than a second threshold value.

[0205] The first threshold value is less than the second threshold value.

[0206] In some embodiments, the control module 902 is further configured to:

[0207] In the second operation mode or the third operation mode, a third fan and a third air valve in the unit are turned on to deliver part of the primary side supply air to the air inlet cavity and mix with the secondary side supply air in the air inlet cavity, and the air speed of the second fan is greater than the air speed of the third fan; and / or,

[0208] In the first operation mode, the heating module is turned on.

[0209] It can be understood that the same or similar contents in different embodiments in the embodiments of the present disclosure can be referred to each other.

[0210] It can be understood that the "first", "second" and the like in the embodiments of the present disclosure are only used for distinction, and do not represent the importance level, time sequence and the like.

[0211] It can be understood that the order of steps in the flow is not limited in the time sequence relationship between the steps unless otherwise specified.

[0212] In the technical solutions of the present disclosure, the collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in the technical solutions comply with the relevant legal regulations and do not violate public order and good customs.

[0213] According to the embodiments of the present disclosure, the present disclosure further provides an electronic device, a readable storage medium and a computer program product.

[0214] Figure 10 A schematic block diagram of an example electronic device 1000 that can be used to implement embodiments of the present disclosure is shown. The electronic device 1000 is intended to represent various forms of digital computers, such as laptops, desktops, tablets, servers, servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit implementations of the present disclosure described and / or claimed in this document.

[0215] As Figure 10As shown, the electronic device 1000 includes a computing unit 1001 that can perform various appropriate actions and processes in accordance with a computer program stored in a read-only memory (ROM) 1002 or a computer program loaded into a random access memory (RAM) 1003 from a storage unit 1008. Various programs and data required for the operation of the electronic device 1000 can also be stored in the RAM 1003. The computing unit 1001, the ROM 1002, and the RAM 1003 are connected to each other through a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0216] A plurality of components in the electronic device 1000 are connected to the I / O interface 1005, including an input unit 1006 such as a keyboard, a mouse, and the like, an output unit 1007 such as various types of displays, a speaker, and the like, a storage unit 1008 such as a magnetic disk, an optical disk, and the like, and a communication unit 1009 such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 1009 allows the electronic device 1000 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0217] The computing unit 1001 can be various general-purpose and / or special-purpose processing components having processing and computing capabilities. Some examples of the computing unit 1001 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, and the like. The computing unit 1001 performs various methods and processes described above, such as the control method. For example, in some embodiments, the control method can be implemented as a computer software program that is tangibly embodied in a machine-readable medium, such as the storage unit 1008. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 1000 via the ROM 1002 and / or the communication unit 1009. When the computer program is loaded into the RAM 1003 and executed by the computing unit 1001, one or more steps of the control method described above can be performed. Alternatively, in other embodiments, the computing unit 1001 can be configured to perform the control method by any other appropriate means, such as by means of firmware.

[0218] Various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a complex programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0219] Program code for carrying out methods of the present disclosure can be written in any combination of one or more programming languages. The program code can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable task processing apparatus to produce a machine, such that the program code, when executed by the processor or controller, implements the functions / operations specified in the flowcharts and / or block diagrams. The program code can be executed entirely on a machine, partially on a machine, partially on a machine as part of a standalone software package, or entirely on a remote machine or server.

[0220] In the context of the present disclosure, a machine-readable medium can be a tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine-readable storage medium will include one or more lines of electrical conductors, 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), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0221] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0222] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0223] The computer system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service ("Virtual Private Server", or simply "VPS"). The server can also be a server of a distributed system, or a server combined with a blockchain.

[0224] It should be understood that various forms of flow shown above can be used, with steps reordered, added, or removed. For example, the steps recited in the present disclosure can be performed in parallel, in series, or in a different order, without limitation herein, as long as the desired results of the technical solutions of the present disclosure can be achieved.

[0225] The above detailed description does not limit the scope of the disclosure. Various modifications, combinations, sub-combinations and alternatives can be made to the detailed description. Any modification, equivalent replacement and improvement etc. made within the spirit and principle of the disclosure shall be included in the scope of the disclosure.

Claims

1. An indirect evaporative cooling unit, comprising: a heat exchange core for exchanging heat between secondary-side supply air delivered by a supply air chamber and primary-side return air delivered by a return air chamber to obtain secondary-side exhaust air and primary-side supply air, and delivering the secondary-side exhaust air through an exhaust air chamber and the primary-side supply air through a supply air chamber; a makeup air system arranged in a chamber for delivering makeup air to the primary-side supply air or the primary-side return air after being turned on, the chamber comprising at least one of the supply air chamber, the return air chamber, the exhaust air chamber and the supply air chamber; a humidity control system partially arranged in the supply air chamber for controlling humidity of the primary-side supply air.

2. The unit of claim 1, wherein: the exhaust air chamber and the supply air chamber are isolated from each other by a first partition; the makeup air system comprises a first fan and a first air valve, the first air valve being arranged on the first partition, and the first fan being arranged in the exhaust air chamber or the supply air chamber; the first fan and the first air valve are configured to deliver makeup air to the primary-side supply air using the secondary-side exhaust air after being turned on.

3. The unit of claim 1, wherein: the supply air chamber and the return air chamber are isolated from each other by a second partition; the makeup air system comprises a second fan and a second air valve, the second air valve being arranged on the second partition, and the second fan being arranged in the supply air chamber or the return air chamber; the second fan and the second air valve are configured to deliver makeup air to the primary-side return air using the secondary-side supply air after being turned on.

4. The unit of claim 3, wherein: the supply air chamber and the supply air chamber are isolated from each other by a third partition; the makeup air system further comprises a third fan and a third air valve, the third air valve being arranged on the third partition, and the third fan being arranged in the supply air chamber or the supply air chamber; the third fan and the third air valve are configured to deliver part of the primary-side supply air to the supply air chamber and mix with the secondary-side supply air in the supply air chamber after being turned on; wherein a speed of the second fan is greater than a speed of the third fan.

5. The crew of claim 1, wherein, the humidity control system comprises: a humidity zone, a regeneration zone, a humidity spray chamber, a regeneration spray chamber and an isolation assembly; the humidity spray chamber is arranged in the supply air chamber, the regeneration spray chamber is arranged in the exhaust air chamber, and the humidity zone, the regeneration zone and the isolation assembly are arranged outside the chamber; the isolation assembly is arranged between the humidity zone and the regeneration zone, and the isolation assembly comprises a retractable baffle and a water separation membrane; the retractable baffle is configured to isolate the humidity zone and the regeneration zone after being turned on; the water separation membrane is configured to allow water to permeate from the humidity zone to the regeneration zone in a single direction after the retractable baffle is turned off; the humidity zone is configured to deliver a specific solution in a first state to the humidity spray chamber when the retractable baffle is turned on, or deliver a specific solution in a second state to the humidity spray chamber when the retractable baffle is turned off. The humidity spray chamber is configured to humidify the primary-side supply air with the specific solution in the first state or dehumidify the primary-side supply air with the specific solution in the second state. The regeneration zone is configured to be in an empty state when the telescopic baffle is open, and to deliver the regeneration solution to the regeneration spray chamber when the telescopic baffle is closed. The regeneration spray chamber is configured to dehumidify the regeneration solution, and to regenerate the specific solution in the second state with the dehumidified regeneration solution.

6. The unit of any one of claims 1-5, further comprising: a heating module arranged in the humidity zone of the humidity control system and configured to heat the specific solution in the first state when the heating module is turned on; and / or an evaporator and a condenser, the evaporator being arranged in the supply air cavity and having an initial state or a rotated state via an evaporator rotating shaft, and the rotated state having a smaller air outlet resistance to the primary-side supply air than the initial state, the condenser being arranged in the exhaust air cavity and having an initial state or a rotated state via a condenser rotating shaft, and the rotated state having a smaller air outlet resistance to the secondary-side exhaust air than the initial state; and / or a spray system arranged in the outdoor air inlet cavity and configured to cool the outdoor fresh air to obtain the secondary-side outdoor air inlet air when the spray system is turned on; and / or a controller configured to control the unit according to a current operation mode. The controller is specifically configured to:

7. The machine group according to claim 6, wherein, in a first operation mode, turn off the spray system in the unit, turn on a first fan and a first air valve in the unit to supplement the primary-side supply air with the secondary-side exhaust air, turn on the telescopic baffle in the unit, and turn off the evaporator and the condenser in the unit and control the evaporator and the condenser to be in the rotated state; or in a second operation mode, turn on the spray system in the unit, turn on a second fan and a second air valve in the unit to supplement the primary-side return air with the secondary-side outdoor air inlet air, turn off the telescopic baffle, and turn off the evaporator and the condenser in the unit and control the evaporator and the condenser to be in the rotated state; or in a third operation mode, turn on the spray system in the unit, turn on the second fan and the second air valve to supplement the primary-side return air with the secondary-side outdoor air inlet air, turn off the telescopic baffle, and turn on the evaporator and the condenser and control the evaporator and the condenser to be in the initial state to cool the primary-side supply air. The first operation mode comprises that the outdoor dry-bulb temperature is less than or equal to a first threshold value. The second operation mode comprises that the outdoor dry-bulb temperature is greater than the first threshold value and the outdoor wet-bulb temperature is less than or equal to a second threshold value. The third operation mode comprises that the outdoor wet-bulb temperature is greater than the second threshold value. The first threshold value is less than the second threshold value. The controller is further configured to:

8. The machine group according to claim 7, wherein, ​ in the second operation mode or the third operation mode, the third fan and the third air valve in the unit are opened to deliver part of the primary side supply air into the air inlet cavity and mix with the secondary side inlet air, and the air speed of the second fan is greater than that of the third fan; and / or, in the first operation mode, the heating module in the unit is opened. 9.A control method applied to the unit of any one of claims 1-8, the method comprising: determining a current operation mode; controlling the unit according to the current operation mode.

10. The method of claim 9, wherein, controlling the unit according to the current operation mode comprises: in the first operation mode, the spray system in the unit is closed, the first fan and the first air valve in the unit are opened to supplement the primary side supply air with the secondary side exhaust air, the telescopic baffle in the unit is opened, and the evaporator and the condenser in the unit are closed, and the evaporator and the condenser are both in a rotating state; or in the second operation mode, the spray system in the unit is opened, the second fan and the second air valve in the unit are opened to supplement the primary side return air with the secondary side inlet air, the telescopic baffle is closed, and the evaporator and the condenser in the unit are closed, and the evaporator and the condenser are both in a rotating state; or in the third operation mode, the spray system in the unit is opened, the second fan and the second air valve are opened to supplement the primary side return air with the secondary side inlet air, the telescopic baffle is closed, and the evaporator and the condenser are opened, and the evaporator and the condenser are both in an initial state to cool the primary side supply air; wherein the first operation mode comprises that the outdoor dry-bulb temperature is less than or equal to a first threshold value; the second operation mode comprises that the outdoor dry-bulb temperature is greater than the first threshold value and the outdoor wet-bulb temperature is less than or equal to a second threshold value; the third operation mode comprises that the outdoor wet-bulb temperature is greater than the second threshold value; the first threshold value is less than the second threshold value.

11. The method of claim 10, wherein, controlling the unit according to the current operation mode further comprises: in the second operation mode or the third operation mode, the third fan and the third air valve in the unit are opened to deliver part of the primary side supply air into the air inlet cavity and mix with the secondary side inlet air, and the air speed of the second fan is greater than that of the third fan; and / or, in the first operation mode, the heating module in the unit is opened. 12.A control device applied to the unit of any one of claims 1-8, the device comprising: a determination module configured to determine a current operation mode; a control module configured to control the unit according to the current operation mode. 13.An electronic device comprising: at least one processor; and a memory connected to the at least one processor in communication; wherein, The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 9-11.

14. A non-transitory computer readable storage medium having stored thereon computer instructions, wherein, The computer instructions are for causing the computer to perform the method of any one of claims 9-11.

15. A computer program product comprising a computer program which, when executed by a processor, implements the method of any one of claims 9-11.

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