Double-cold-source air conditioner, control method, storage medium and control device

Abstract

The invention provides a double-cold-source air conditioner, a control method, a storage medium and a control device.The double-cold-source air conditioner comprises a compressor, a condenser, a throttling device and an evaporator, and the compressor, the condenser, the throttling device and the evaporator are connected to form a refrigerant circulation loop; the condenser is provided with a first heat exchange channel and a second heat exchange channel which can exchange heat with each other, the condenser is connected to the refrigerant circulation loop in series through the first heat exchange channel, and the second heat exchange channel is used for introducing a cooling medium so that the cooling medium can flow; the double-cold-source air conditioner is provided with an air return channel, and the evaporator is located in the air return channel to conduct heat exchange with return air. And the return air channel is further used for selectively enabling the return air to blow over the condenser or not to blow over the condenser, so that when the return air blows over the condenser, heat exchange is conducted between the condenser and the return air. According to the technical scheme, the technical problem that the air conditioner cannot be matched with the indoor load in the engineering construction process can be solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioning, and in particular relates to a dual-cold-source air conditioner, a control method, a storage medium and a control device. Background Art

[0002] With the rapid development of communications technology and the country's vigorous promotion of the construction of communication base stations and computer rooms, the demand for upgrading and renovating older computer rooms is gradually increasing. Since temperature control energy consumption accounts for a significant proportion of computer room energy consumption, the market is demanding increasingly high efficiency in computer room cooling equipment. Older products are unable to meet these rapidly evolving energy efficiency requirements, and high-efficiency products are constantly filling the gap in the market. Water-cooled air conditioners are often more energy-efficient than air-cooled air conditioners, and natural cooling technology is also more energy-efficient than traditional compression refrigeration technology. Therefore, dual-cooling system computer room air conditioners, combining water cooling with natural cooling, have significant market advantages.

[0003] During the construction of new computer rooms and the upgrading and renovation of old computer rooms, the heat load of the computer room's communication equipment will change with the progress of the renovation and actual usage. The dual-cold source water-cooled air-conditioning system installed in advance may not be able to match the actual load, resulting in frequent start-stop phenomena and greatly shortening its service life. Summary of the Invention

[0004] Therefore, the present invention provides a dual-cold source air conditioner, a control method, a storage medium and a control device, which can solve the technical problem of the mismatch between the air conditioner and the indoor load during the construction process.

[0005] In order to solve the above problems, the present invention provides a dual-cold source air conditioner, which includes a compressor, a condenser, a throttling device and an evaporator. The compressor, the condenser, the throttling device and the evaporator are connected to form a refrigerant circulation loop; the condenser has a first heat exchange channel and a second heat exchange channel that can exchange heat with each other. The condenser is connected in series to the refrigerant circulation loop through the first heat exchange channel, and the second heat exchange channel is used to pass a cooling medium to allow the cooling medium to flow;

[0006] The dual-cold source air conditioner has a return air channel, and the evaporator is located in the return air channel to perform heat exchange with the return air in the return air channel; wherein, the return air channel is also used to selectively allow the return air to blow through the condenser or not blow through the condenser, so that the condenser and the return air can perform heat exchange when the return air blows through the condenser.

[0007] In some embodiments, the dual-cold source air conditioner further includes a casing, the casing having an evaporator cavity for mounting the evaporator and a condenser cavity for mounting the condenser, and the casing is further provided with an air outlet communicating with the evaporator cavity; the return air channel includes the evaporator cavity and the condenser cavity; the evaporator cavity has a first return air outlet, the condenser cavity has a second return air outlet, the condenser cavity is communicated with the evaporator cavity through a connecting channel, and both the first return air outlet and the connecting channel can be opened or closed;

[0008] The return air duct allows the return air to blow through the condenser by closing the first return air port and opening the connecting channel, and the return air duct also prevents the return air from blowing through the condenser by opening the first return air port and closing the connecting channel.

[0009] In some embodiments, the dual-cold-source air conditioner further includes a movable baffle, and the return air duct closes the first return air outlet and opens the connecting channel, or opens the first return air outlet and closes the connecting channel through the movable baffle;

[0010] Wherein, the movable baffle is used to close the first return air outlet and open the connecting channel when it moves to the first position; the movable baffle is used to open the first return air outlet and close the connecting channel when it moves to the second position.

[0011] In some embodiments, the evaporator chamber and the condenser chamber are separated by a partition; the connecting channel is provided on the partition; the evaporator chamber further has a first chamber wall adjacent to the partition, and the first return air outlet is provided on the first chamber wall;

[0012] One end of the movable baffle is rotatably connected between the partition and the first cavity wall so as to be movable to the first position or the second position by rotation.

[0013] In some embodiments, the dual-cold-source air conditioner further includes a fan, which is used to drive the air flow in the return air duct; the dual-cold-source air conditioner has a pure cooling medium cooling mode, a mixed cooling mode, and a compression cooling mode;

[0014] In the pure cooling medium refrigeration mode, the compressor is turned off, and the return air duct allows the return air to blow through the condenser; in the mixed refrigeration mode, the compressor is turned on, and the return air duct allows the return air to blow through the condenser; in the compression refrigeration mode, the compressor is turned on, and the return air duct does not allow the return air to blow through the condenser.

[0015] In some embodiments, the present invention further provides a control method for the dual-cold-source air conditioner described in any one of the above items, when the dual-cold-source air conditioner further includes a fan, the fan is used to drive the air flow in the return air duct; and the dual-cold-source air conditioner has a pure cooling medium refrigeration mode, a mixed refrigeration mode and a compression refrigeration mode; in the pure cooling medium refrigeration mode, the compressor is turned off, and the return air duct allows the return air to blow through the condenser; in the mixed refrigeration mode, the compressor is turned on, and the return air duct allows the return air to blow through the condenser; in the compression refrigeration mode, the compressor is turned on, and the return air duct does not allow the return air to blow through the condenser, the control method includes a method for determining and entering the refrigeration mode; wherein the method for determining and entering the refrigeration mode includes the following steps:

[0016] Step S402: Turn on the fan;

[0017] Step S403: detecting the inlet temperature T0 of the cooling medium in the second heat exchange channel, the return air temperature T1 of the second return air outlet, and the return air temperature T2 of the first return air outlet;

[0018] Step S405: determining whether T0 < T1 and T0 < T2 are satisfied, wherein T0 is a preset temperature;

[0019] If the conditions are met, the dual-cold-source air conditioner is controlled to enter the pure cooling medium cooling mode;

[0020] If not, the dual-cold-source air conditioner is controlled to enter a mixed cooling mode or a compression cooling mode.

[0021] In some embodiments, if the dual-cold-source air conditioner enters the pure cooling medium cooling mode, step S407 is executed: continuously monitoring the increase value ΔT1 of the return air temperature of the second return air outlet within the time Δt, and determining whether ΔT1 ≥ X is satisfied, where X is a preset temperature fluctuation upper deviation value;

[0022] If so, the inlet temperature T0 of the cooling medium in the second heat exchange channel and the return air temperature T1 of the second return air outlet are detected, and it is determined whether T0 < T1 is satisfied; if T0 < T1, the dual-cold-source air conditioner is controlled to enter the mixed cooling mode; otherwise, the dual-cold-source air conditioner is controlled to enter the compression cooling mode;

[0023] If not, repeat step S407.

[0024] In some embodiments, if the dual-cold source air conditioner enters the hybrid cooling mode, step S411 is executed: the increase value △T1 of the return air temperature of the second return air outlet within the △t time is monitored, and △T1 is compared with the preset temperature fluctuation upper deviation X and the preset temperature fluctuation lower deviation Y; if Y≤△T1<X, step S411 is repeated; if △T1<Y, the dual-cold source air conditioner is controlled to enter the pure cooling medium cooling mode; if △T1≥X, the dual-cold source air conditioner is controlled to enter the compression cooling mode.

[0025] In some embodiments, if the dual-cold-source air conditioner enters the compression cooling mode, step S415 is executed: detecting the increase in the return air temperature ΔT2 at the first return air outlet within the time Δt, and determining whether ΔT2 < Y is satisfied, where Y is a preset temperature fluctuation deviation value;

[0026] If so, the inlet temperature T0 of the cooling medium in the second heat exchange channel and the return air temperature T2 of the first return air outlet are detected, and it is determined whether T0 < T2; if T0 < T2, the dual-cold-source air conditioner is controlled to switch to the mixed cooling mode; if T0 ≥ T2, the dual-cold-source air conditioner is maintained in the compression cooling mode, and step S415 is repeated;

[0027] If not, repeat step S415.

[0028] In some embodiments, when the dual-cold source air conditioner further includes a movable baffle, the return air duct closes the first return air outlet and opens the connecting channel through the movable baffle, or opens the first return air outlet and closes the connecting channel; and when the movable baffle is moved to the first position, the first return air outlet is closed and the connecting channel is opened; when the movable baffle is moved to the second position, the first return air outlet is opened and the connecting channel is closed.

[0029] Controlling the dual-cold-source air conditioner to enter the pure cooling medium cooling mode specifically includes the following steps: step S52: controlling the movable baffle to move to the first position; step S53: determining whether the compressor is turned on; if so, turning off the compressor and the throttling device in sequence; if not, keeping the compressor in the off state;

[0030] And / or, controlling the dual-cold-source air conditioner to enter the hybrid cooling mode specifically includes the following steps: step S62: controlling the movable baffle to move to the first position; step S63: determining whether the compressor is turned on; if not, turning on the compressor and the throttling device; if so, keeping the compressor and the throttling device turned on;

[0031] And / or, controlling the dual-cold source air conditioner to enter the compression cooling mode specifically includes the following steps: step S72: controlling the movable baffle to move to the second position; step S73: determining whether the compressor is turned on; if not, turning on the compressor and the throttling device; if so, keeping the compressor and the throttling device turned on.

[0032] The present invention also provides a storage medium, wherein a program is stored in the storage medium; when the program is executed, any one of the above-mentioned control methods is implemented.

[0033] The present invention also provides a control device, which includes a processor and the storage medium described above, and the processor is used to execute the program stored in the storage medium.

[0034] The present invention provides a dual-cold source air conditioner, control method, storage medium and control device having the following features:

[0035] Beneficial effects:

[0036] 1. The dual-cold source air conditioner of the present invention can achieve cooling by relying solely on the natural cold source of incoming water under low water temperature conditions by switching between different modes; it can also achieve simultaneous cooling by compression cooling and natural cold source cooling under conditions of low water temperature and low load and insufficient heat exchange of the natural cold source; at the same time, it can achieve normal compression cooling under high load conditions, thereby realizing the function of matching indoor loads during engineering construction.

[0037] 2. The dual-cold source air conditioner of the present invention can meet the needs of some engineering projects with limited installation space through its integrated design, making the product more competitive in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. The drawings described below are merely exemplary. Those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0039] Figure 1 This is a system structure diagram of a dual-cold-source air conditioner provided by one embodiment of the present invention;

[0040] Figure 2 1 is a schematic structural diagram of a dual-cold-source air conditioner provided by a first example of the present invention;

[0041] Figure 3 1 is a structural diagram of a dual-cold-source air conditioner provided by a second example of the present invention;

[0042] Figure 4 This is a structural diagram of a condenser provided by one embodiment of the present invention;

[0043] Figure 5 This is a flow chart of a control method for a dual-cold-source air conditioner provided by one embodiment of the present invention;

[0044] Figure 6 This is a flow chart of controlling a dual-cold-source air conditioner to enter a pure cooling medium cooling mode, provided by one embodiment of the present invention;

[0045] Figure 7 This is a flow chart of controlling a dual-cold-source air conditioner to enter a hybrid cooling mode, provided by one embodiment of the present invention;

[0046] Figure 8 This is a flow chart of controlling a dual-cold-source air conditioner to enter a compression cooling mode, provided by one embodiment of the present invention;

[0047] Figure 9 is a structural diagram of a control device provided by one embodiment of the present invention;

[0048] Figure 10 It is a structural diagram of a control device provided by one embodiment of the present invention.

[0049] The accompanying drawings are:

[0050] 1. Casing; 2. Partition; 3. Another partition; 11. Fan; 12. Evaporator; 13. Throttling device; 14. Compressor; 15. Condenser; 16. Water inlet temperature sensor; 21. Fan cavity; 22. Evaporator cavity; 23. System component cavity; 24. Condenser cavity; 25. Movable baffle; 26. Water side return air temperature and humidity sensor; 27. Fluorine side return air temperature and humidity sensor; 81. First control module; 82. Second control module; 91. Processor; 92. Storage medium; 100. Return air channel; 101. Casing; 102. Heat exchange fins; 151. First heat exchange channel; 152. Second heat exchange channel; 221. First return air outlet; 222. First cavity wall; 241. Second return air outlet; 242. Connecting channel; 211. Air outlet. DETAILED DESCRIPTION

[0051] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0055] See also Figure 1-2 As shown, according to an embodiment of the present invention, a dual-cold-source air conditioner is provided, comprising a compressor 14, a condenser 15, a throttling device 13, and an evaporator 12. The compressor 14, condenser 15, throttling device 13, and evaporator 12 are connected to form a refrigerant circulation loop. The condenser 15 has a first heat exchange channel 151 and a second heat exchange channel 152, which can exchange heat with each other. The condenser 15 is connected in series to the refrigerant circulation loop via the first heat exchange channel 151. The second heat exchange channel 152 is used to allow the flow of cooling medium.

[0056] The dual-cold-source air conditioner has a return air duct 100, and the evaporator 12 is located in the return air duct 100 to perform heat exchange with the return air in the return air duct 100. The return air duct 100 is also used to selectively allow the return air to blow through the condenser 15 or not blow through the condenser 15, so that when the return air blows through the condenser 15, the condenser 15 and the return air can exchange heat. It should be noted here that the heat exchange between the condenser 15 and the return air refers to the heat exchange between the first heat exchange channel 151 and the second heat exchange channel 152 of the condenser 15 and the return air, wherein the heat exchange between the second heat exchange channel 152 and the return air is mainly performed to cool the return air.

[0057] The above-mentioned dual-cold source air conditioner has three working modes, namely pure cooling medium cooling mode, mixed cooling mode and compression cooling mode. Among them, when the return air duct 100 chooses to make the return air blow through the condenser 15, and the compressor 14 is not started, the return air blows through the condenser 15, exchanges heat with the cooling medium in the second heat exchange channel 152, and is cooled to achieve the effect of providing cold air. At this time, only relying on the cooling medium natural cold source for cooling, it can meet the cooling demand of low load. When the return air duct 100 chooses to make the return air blow through the condenser 15, and the compressor 14 is started, the return air blows through the condenser 15 on the one hand and is cooled once by the cooling medium in the second heat exchange channel 152, and on the other hand blows through the evaporator 12, exchanges heat with the evaporator 12, and is cooled twice by the evaporator 12, thereby achieving the effect of providing cold air. At this time, compression cooling and natural cold source cooling are cooled simultaneously, which can meet the cooling demand of higher load. When the return air duct 100 is selected so that the return air does not blow through the condenser 15 and the compressor 14 is started, the return air only blows through the evaporator 12, exchanges heat with the evaporator 12, and is cooled by the evaporator 12, thereby achieving the effect of providing cold air. At this time, relying only on compression refrigeration, high-load cooling needs can be met.

[0058] It can be seen that when the above-mentioned cooling medium is water, the dual-cold source air conditioner of the present invention can achieve cooling only by the incoming water natural cold source under low water temperature conditions by switching different modes; it can also achieve simultaneous cooling of compression cooling and natural cold source cooling under low water temperature and low load conditions and insufficient heat exchange of the natural cold source; at the same time, it can achieve normal compression cooling under high load conditions, thereby realizing the function of matching indoor loads during engineering construction.

[0059] In some embodiments, as Figure 4 As shown, the aforementioned condenser 15 can be a water-fluorine heat exchanger with air-cooling heat exchange function. The condenser 15 has a housing 101, and the aforementioned first heat exchange channel 151 and second heat exchange channel 152 are both disposed within the housing 101. The aforementioned first heat exchange channel 151 is a refrigerant channel, and the second heat exchange channel 152 is a cooling medium channel. The refrigerant in the aforementioned refrigerant circulation loop can be Freon. The aforementioned cooling medium can be cooling water.

[0060] Among them, the first heat exchange channel 151 can be a heat exchange coil, and the space between the heat exchange coil and the shell 101 forms a second heat exchange channel 152. The first heat exchange channel 151 has a refrigerant inlet and a refrigerant outlet for the flow of refrigerant. The shell 101 is provided with a cooling medium inlet and a cooling medium outlet connected to the second heat exchange channel 152 for the flow of cooling medium. When the refrigerant and the cooling medium flow inside the condenser 15, the refrigerant can be cooled by convection heat transfer. The shell 101 can be provided with heat exchange fins 102 to assist the condenser 15 in heat exchange with the return air. The heat exchange fins 102 are located on the outer side of the shell 101, and the setting direction of the heat exchange fins 102 is consistent with the direction of air flow, which can complete the convection heat exchange of air → heat exchange fins 102 → shell 101 → cooling water.

[0061] In some embodiments, the aforementioned throttling device 13 may be a throttle valve such as an electronic throttle valve.

[0062] In order to realize the function that the return air channel 100 can selectively make the return air blow through the condenser 15 or not blow through the condenser 15, in some embodiments, as Figure 2 As shown, the aforementioned dual-cold-source air conditioner further includes a housing 1 having an evaporator chamber 22 for mounting the evaporator 12 and a condenser chamber 24 for mounting the condenser 15. The housing 1 is also provided with an air outlet 211 communicating with the evaporator chamber 22. The aforementioned return air duct 100 includes the evaporator chamber 22 and the condenser chamber 24. The evaporator chamber 22 has a first return air outlet 221, and the condenser chamber 24 has a second return air outlet 241. The condenser chamber 24 communicates with the evaporator chamber 22 via a connecting passage 242. Both the first return air outlet 221 and the connecting passage 242 can be opened or closed. The return air duct 100 allows return air to flow through the condenser 15 by closing the first return air outlet 221 and opening the connecting passage 242. Alternatively, the return air duct 100 prevents return air from flowing through the condenser 15 by opening the first return air outlet 221 and closing the connecting passage 242.

[0063] In the above example, when the first return air port 221 is closed and the connecting channel 242 is opened, the return air enters the condenser chamber 24 through the second return air port 241, blows through the condenser 15, then enters the evaporator chamber 22 through the connecting channel 242 to exchange heat with the evaporator 12, and then flows out from the air outlet 211. At this time, because the return air passes through the condenser chamber 24, the function of the return air channel 100 to allow the return air to pass through the condenser 15 can be achieved. When the first return air port 221 is opened and the connecting channel 242 is closed, the return air enters the evaporator chamber 22 through the first return air port 221 to exchange heat with the evaporator 12, and then flows out from the air outlet 211. At this time, because the return air does not pass through the condenser chamber 24, the function of the return air channel 100 to prevent the return air from passing through the condenser 15 can be achieved.

[0064] In some embodiments, as shown in Figure 2 The aforementioned double-cold-source air conditioner further comprises a movable baffle 25. The aforementioned return air passage 100 closes the first return air opening 221 and opens the connecting passage 242 through the movable baffle 25. The return air passage 100 also opens the first return air opening 221 and closes the connecting passage 242 through the movable baffle 25. The movable baffle 25 is movable to a first position and a second position. When the movable baffle 25 is moved to the first position, the movable baffle 25 closes the first return air opening 221 and opens the connecting passage 242, thereby realizing the function of the aforementioned return air passage 100 closing the first return air opening 221 and opening the connecting passage 242. When the movable baffle 25 is moved to the second position, the movable baffle 25 opens the first return air opening 221 and closes the connecting passage 242, thereby realizing the function of the aforementioned return air passage 100 opening the first return air opening 221 and closing the connecting passage 242.

[0065] In order to realize the function of the aforementioned movable baffle 25 being movable to the first position and the second position, in some embodiments, as shown in Figure 2 The aforementioned evaporator cavity 22 and condenser cavity 24 are separated by a partition 2. The aforementioned connecting passage 242 is arranged on the partition 2. The aforementioned evaporator cavity 22 further has a first cavity wall 222 adjacent to the partition 2. The aforementioned first return air opening 221 is arranged on the first cavity wall 222. One end of the movable baffle 25 is rotatably connected between the partition 2 and the first cavity wall 222, so as to be rotatably moved to the aforementioned first position or the second position, thereby realizing the function of the aforementioned movable baffle 25 being movable to the first position and the second position.

[0066] In some embodiments, the aforementioned double-cold-source air conditioner further comprises a driving mechanism for driving the movable baffle 25 to move to the aforementioned first position or the second position. The driving mechanism can comprise a motor for driving the movable baffle 25 to move to the aforementioned first position or the second position by the motor. In this example, the aforementioned movable baffle 25 is an electric baffle by the driving mechanism.

[0067] In some embodiments, the aforementioned double-cold-source air conditioner further comprises a fan 11 for driving air flow in the return air passage 100. As shown in Figure 2 The aforementioned casing 1 has a fan cavity 21 located on a side of the evaporator cavity 22 away from the condenser cavity 24. The fan cavity 21 is in communication with the evaporator cavity 22. The aforementioned air outlet 211 is arranged on a cavity wall of the fan cavity 21.

[0068] In some embodiments, as shown in Figure 2As shown, the aforementioned casing 1 has a first cavity, which is separated from the evaporator cavity 22 by the aforementioned partition 2. Another partition 3 is arranged in the first cavity, which separates the first cavity into the aforementioned condenser cavity 24 and the system cavity 23, in which the aforementioned compressor 14 and the throttling device 13 are installed. Other related refrigeration system components can also be installed in the system cavity 23.

[0069] The arrangement of the aforementioned fan cavity 21, evaporator cavity 22 and first cavity can be designed according to actual needs. In a first example, as shown in Figure 2 the aforementioned fan cavity 21, evaporator cavity 22 and first cavity are arranged in sequence from top to bottom. In this first example, the aforementioned air outlet 211 can include a first air outlet located at the upper end of the fan cavity 21 and a second air outlet located at the side of the fan cavity 21, so as to meet the application environment of top air supply.

[0070] In a second example, as shown in Figure 3 the aforementioned fan cavity 21, evaporator cavity 22 and first cavity are arranged in sequence from bottom to top. At this time, the aforementioned air outlet 211 is arranged at the side of the fan cavity 21, so as to meet the application environment of bottom air supply, such as the air supply of the floor of the machine room engineering project.

[0071] In some embodiments, the aforementioned dual-cold-source air conditioner can be a machine room air conditioner.

[0072] In some embodiments, the aforementioned dual-cold-source air conditioner has a pure cooling medium refrigeration mode, a mixed refrigeration mode and a compression refrigeration mode. In the pure cooling medium refrigeration mode, the compressor 14 is closed, and the return air passage 100 blows the return air through the condenser 15. In the mixed refrigeration mode, the compressor 14 is turned on, and the return air passage 100 blows the return air through the condenser 15. In the compression refrigeration mode, the compressor 14 is turned on, and the return air passage 100 does not blow the return air through the condenser 15.

[0073] In some embodiments, the present application also provides a control method of a dual-cold-source air conditioner, wherein the dual-cold-source air conditioner further comprises a fan 11 for driving the air flow in the return air passage 100; and the dual-cold-source air conditioner has a pure cooling medium refrigeration mode, a mixed refrigeration mode and a compression refrigeration mode; in the pure cooling medium refrigeration mode, the compressor 14 is closed, and the return air passage 100 blows the return air through the condenser 15; in the mixed refrigeration mode, the compressor 14 is turned on, and the return air passage 100 blows the return air through the condenser 15; in the compression refrigeration mode, the compressor 14 is turned on, and the return air passage 100 does not blow the return air through the condenser 15; the control method of the present application comprises a refrigeration mode judgment and entering method. As shown in Figure 5 the refrigeration mode judgment and entering method comprises the following steps:

[0074] Step S402: Turn on the fan 11.

[0075] Before confirming the mode, make sure that the fan 11 is turned on and the air can flow inside the unit so that the various cooling modes can be effective.

[0076] Step S403 : detecting the inlet temperature T0 of the cooling medium in the second heat exchange channel 152 , the return air temperature T1 of the second return air port 241 , and the return air temperature T2 of the first return air port 221 .

[0077] Among them, the cooling medium inlet liquid temperature T0 can be detected by the cooling water inlet temperature sensing package 16S16, and the return air temperature T1 of the second return air outlet 241 can be detected by the water side return air temperature and humidity sensor 26S26, and the return air temperature T2 of the first return air outlet 221 can be detected by the fluorine side return air temperature and humidity sensor 27S27 to determine whether to enter the pure cooling medium refrigeration mode or the compression refrigeration mode.

[0078] Step S405: Determine whether T0<T1 and T0<T2 are satisfied, where T0 is a preset temperature.

[0079] If T0<T1 and T0<T2 are satisfied, it means that the cooling demand can be met by relying solely on the cooling medium, and the dual-cooling source air conditioner is controlled to enter the pure cooling medium cooling mode.

[0080] If not, that is, T0<T1 and T0<T2 are not satisfied, it means that cooling cannot be performed relying solely on the cooling medium, and the dual-cold source air conditioner is controlled to enter the mixed cooling mode or the compression cooling mode.

[0081] In some embodiments, before the aforementioned step S402 , the method further includes step S401 : the controller confirms the judgment of making the dual-cold-source air conditioner enter the cooling mode and the mode entry.

[0082] In the above example, by detecting the inlet temperature T0 of the cooling medium in the second heat exchange channel 152, the return air temperature T1 of the second return air outlet 241 and the return air temperature T2 of the first return air outlet 221, the dual-cold source air conditioner can be switched to the corresponding pure cooling medium cooling mode, mixed cooling mode or compression cooling mode according to the detection results.

[0083] In some embodiments, if the dual-cold-source air conditioner enters the pure cooling medium cooling mode, step S407 is executed: continuously monitoring the increase value ΔT1 of the return air temperature of the second return air outlet 241 within the Δt time, and determining whether ΔT1≥X is satisfied, where X is a preset temperature fluctuation upper deviation value.

[0084] Δt is a program-set monitoring interval, which can be any time. X is a program-set upper deviation value for temperature fluctuation. The water-side return air temperature and humidity sensor 26 monitors the return air temperature increase ΔT1 at the second return air outlet 241 within the specified time interval to determine whether the cooling capacity provided by the pure cooling medium cooling mode can meet the indoor cooling demand.

[0085] If △T1≥X is satisfied, it means that the cooling capacity provided by the pure cooling medium refrigeration mode cannot meet the indoor cooling demand, and the unit needs to switch modes; at this time, the inlet liquid temperature T0 of the cooling medium in the second heat exchange channel 152 and the return air temperature T1 of the second return air outlet 241 are detected, and it is determined whether T0<T1 is satisfied; if T0<T1, the dual-cold source air conditioner is controlled to enter the mixed cooling mode; otherwise, the dual-cold source air conditioner is controlled to enter the compression cooling mode.

[0086] If not, that is, ΔT1 ≥ X is not satisfied, it indicates that the cooling capacity provided by the pure cooling medium cooling mode can meet the indoor cooling demand. The unit can maintain the pure cooling medium cooling mode and repeat step S407. The increase in the return air temperature of the second return air outlet 241 within the time Δt is continuously monitored. The value ΔT1 is continuously determined to determine whether the mode switching is required.

[0087] In some embodiments, if the dual-cooling-source air conditioner enters hybrid cooling mode, step S411 is executed: the increase in the return air temperature ΔT1 at the second return air outlet 241 within a time period of Δt is monitored, and ΔT1 is compared with a preset upper temperature fluctuation deviation X and a preset lower temperature fluctuation deviation Y. If Y ≤ ΔT1 < X, the cooling capacity provided by the hybrid cooling mode can meet the indoor cooling demand, and the unit remains in hybrid cooling mode. Step S411 is then repeated, and the increase in the return air temperature ΔT1 at the second return air outlet 241 within the time period of Δt is continuously monitored to determine whether a mode switch is required. If ΔT1 < Y, the cooling capacity provided by the hybrid cooling mode exceeds the indoor cooling demand, and the unit should return to pure cooling medium cooling mode. In this case, the dual-cooling-source air conditioner is controlled to enter pure cooling medium cooling mode. If ΔT1 ≥ X, the cooling capacity provided by the hybrid cooling mode cannot meet the indoor cooling demand, and the unit needs to enter compression cooling mode. In this case, the dual-cooling-source air conditioner is controlled to enter compression cooling mode.

[0088] In some embodiments, if the dual-cold-source air conditioner enters the compression cooling mode, step S415 is executed: detecting the increase value ΔT2 of the return air temperature of the first return air outlet 221 within the Δt time, and determining whether ΔT2<Y is satisfied, where Y is a preset temperature fluctuation deviation value.

[0089] If Y < ΔT2 < T2, it means that the cooling capacity provided by the compression refrigeration mode is less than the indoor cooling demand, and the unit needs to switch to the mixed refrigeration mode. At this time, the inlet temperature T0 of the cooling medium in the second heat exchange channel 152 and the return air temperature T2 of the first return air outlet 221 are detected, and it is judged whether T0 < T2 is satisfied; if T0 < T2, it means that the condenser 15 can still produce cold air, and the unit can enter the mixed refrigeration mode, at this time, the dual-cold-source air conditioner is switched to the mixed refrigeration mode. If T0 ≥ T2, it means that the condenser 15 has failed to produce cold air, at this time, the dual-cold-source air conditioner is kept in the compression refrigeration mode, and step S415 is repeatedly run to continuously judge whether mode switching is needed by continuously monitoring the increase value ΔT2 of the return air temperature of the first return air outlet 221 within the time Δt.

[0090] If no, that is, ΔT2 < Y is not satisfied, step S415 is repeatedly run to continuously judge whether mode switching is needed by continuously monitoring the increase value ΔT2 of the return air temperature of the first return air outlet 221 within the time Δt.

[0091] In some embodiments, the aforementioned dual-cold-source air conditioner further comprises a movable baffle 25, the return air channel 100 closes the first return air outlet 221 and opens the connecting channel 242 through the movable baffle 25, or opens the first return air outlet 221 and closes the connecting channel 242; and the movable baffle 25 is used to close the first return air outlet 221 and open the connecting channel 242 when it is moved to a first position; the aforementioned control of the dual-cold-source air conditioner entering the pure cooling medium refrigeration mode can specifically comprise the following steps:

[0092] Step S52: control the movable baffle 25 to move to the first position to ensure that the air can form a circulation with the indoor air through the condenser cavity 24, the evaporator cavity 22 and the fan cavity 21 in turn. In one specific application example, the movable baffle 25 is vertically arranged at the first position.

[0093] Step S53: judge whether the compressor 14 is on.

[0094] If yes, that is, the compressor 14 is in the on state, then the compressor 14 and the throttling device 13 are closed in turn.

[0095] If no, that is, the compressor 14 is in the off state, the compressor 14 is kept in the off state, and no additional control operation is needed for the compressor 14 and the throttling device 13.

[0096] Step S55: end. The pure cooling medium refrigeration mode process ends.

[0097] Before the aforementioned step S52, the process may further include step S51: the controller confirms that the dual-cold-source air conditioner enters the pure cooling medium cooling mode. At this time, the controller confirms the start and enters the pure cooling medium cooling mode.

[0098] In some embodiments, controlling the dual-cold-source air conditioner to enter the hybrid cooling mode may specifically include the following steps:

[0099] Step S62: Control the movable baffle 25 to move to the first position to ensure that the wind can circulate with the indoor air through the condenser chamber 24, the evaporator chamber 22 and the fan chamber 21. In a specific application example, the movable baffle 25 is vertically arranged in the first position.

[0100] Step S63: Determine whether the compressor 14 is turned on.

[0101] If not, that is, the compressor 14 is not turned on, the compressor 14 and the throttling device 13 are turned on according to the control logic.

[0102] If so, that is, the compressor 14 is in the on state, the compressor 14 and the throttling device 13 are kept in the on state, and no additional control operation is required on the compressor 14 and the throttling device 13.

[0103] Step S65: End. The process of entering the hybrid cooling mode ends.

[0104] Before the aforementioned step S62, the process may further include step S61: the controller confirms that the dual-cold-source air conditioner enters the hybrid cooling mode. At this point, the controller confirms that the dual-cold-source air conditioner enters the hybrid cooling mode.

[0105] In some embodiments, the aforementioned control of the dual-cold-source air conditioner to enter the compression cooling mode may specifically include the following steps:

[0106] Step S72: Control the movable baffle 25 to move to the second position to ensure that the return air does not pass through the condenser chamber 15, and the return air can circulate with the indoor air through the evaporator chamber 22 and the fan chamber 21. In a specific application example, the movable baffle 25 is arranged horizontally in the first position.

[0107] Step S73: Determine whether the compressor 14 is turned on.

[0108] If not, that is, the compressor 14 is not turned on, the compressor 14 and the throttling device 13 are turned on according to the control logic.

[0109] If so, that is, the compressor 14 is in the on state, the compressor 14 and the throttling device 13 are kept in the on state, and no additional control operation is required on the compressor 14 and the throttling device 13.

[0110] Step S75: End. The process of entering the compression cooling mode ends.

[0111] Before the aforementioned step S72, the process may further include step S71: the controller confirms that the dual-cold-source air conditioner enters the compression cooling mode. At this time, the controller confirms the start and enters the compression cooling mode.

[0112] In some embodiments, the present invention further provides a storage medium 92 in which a program is stored; when the program is executed, any one of the above control methods is implemented.

[0113] In some embodiments, as Figure 10 As shown, the present invention further provides a control device, which includes a processor 91 and the storage medium 92 mentioned above, and the processor 91 is used to execute the program stored in the storage medium 92.

[0114] Among them, the above embodiment implements the above control method by executing the program through the processor 91, thereby solving the problem of the mismatch between the water-cooled room air conditioner and the indoor load during the construction process and improving the energy efficiency of the unit, greatly improving the product cost performance and reliability.

[0115] In some embodiments, as Figure 9 As shown, the aforementioned control device includes a first control module 81 and a second control module 82, and the aforementioned processor 91 includes a first processor 91 and a second processor 91. The first control module 81 includes the first processor 91, and the second control module 82 includes the second processor 91. The aforementioned memory stores a first program, a second program, a third program, and a fourth program. The first processor 91 is used to execute the first program to implement the aforementioned method for determining and entering the cooling mode. The second processor 91 is used to execute the aforementioned second program to implement the aforementioned method for controlling a dual-cold-source air conditioner to enter a pure cooling medium cooling mode. The second processor 91 is also used to execute the aforementioned third program to implement the aforementioned method for controlling a dual-cold-source air conditioner to enter a mixed cooling mode. The second processor 91 is also used to execute the aforementioned fourth program to implement the aforementioned method for controlling a dual-cold-source air conditioner to enter a compression cooling mode.

[0116] The above embodiment can first control the judgment and entry of the cooling mode through the first control module 81, and then control the entry of the pure cooling medium cooling mode, mixed cooling mode, and compression cooling mode of the dual-cold source air conditioner through the second control module 82, thereby realizing cooling only by the incoming water natural cooling source under low water temperature conditions; it can also realize cooling by compression cooling and natural cooling source cooling simultaneously under low water temperature and low load conditions and insufficient heat exchange of the natural cooling source; at the same time, it can realize normal compression cooling under high load conditions.

[0117] For ease of understanding, the overall structure of the present invention is described below, and its working principle is explained.

[0118] The present invention can realize cooling by relying solely on the natural cooling source of incoming water under low water temperature conditions; it can also realize simultaneous cooling by compression cooling and natural cooling source cooling under conditions of low water temperature and low load and insufficient heat exchange of the natural cooling source; and it can also realize normal compression cooling under high load conditions.

[0119] like Figure 1 As shown, the dual-cold-source air conditioner of the present invention includes a fan 11, an evaporator 12, a throttling device 13, a compressor 14, a condenser 15, and a cooling water inlet temperature sensor 16. During normal operation of the dual-cold-source air conditioner of the present invention in hybrid cooling mode or compression cooling mode, the refrigerant is cooled at the condenser 15, throttled by the throttling device 13, reaches the evaporator 12, and is cooled by the fan 11. The refrigerant then enters the compressor 14 for compression to increase enthalpy, and then returns to the condenser 15 for cooling, completing the refrigeration cycle. Within the condenser 15, externally supplied cooling water exchanges heat with the refrigerant in the refrigeration cycle to condense the refrigerant, or heat is exchanged with the indoor return air to provide cool air.

[0120] like Figure 2As shown, the dual-cold-source air conditioner of the present invention further includes a housing 1 having a fan chamber 21, an evaporator chamber 22, a system component chamber 23, and a condenser chamber 24. The fan chamber 21 houses the fan 11, the evaporator chamber 22 houses the evaporator 12 and a fluorine-side return air temperature and humidity sensor 27, the system component chamber 23 houses the compressor 14, the throttling device 13, and other related refrigeration system components, and the condenser chamber 24 houses the condenser 15 and a water-side return air temperature and humidity sensor 26. The fan chamber 21 communicates with the evaporator chamber 22 and with the exterior of the housing; the system component chamber 23 is isolated from the evaporator chamber 22 and the condenser chamber 24, and is also isolated from the exterior of the housing; and a movable baffle 25 is provided at the connection between the evaporator chamber 22 and the condenser chamber 24. When the movable baffle is in a horizontal position, the evaporator chamber 22 is isolated from the condenser chamber 24 and communicates with the outside of the casing. When the movable baffle is in a vertical position, the evaporator chamber 22 communicates with the condenser chamber 24 and is isolated from the outside of the casing. The condenser chamber 24 is always communicated with the outside of the casing. When the dual-cold source air conditioner of the present invention is in pure cooling medium refrigeration mode, the movable baffle 25 is in a vertical position, the compressor 14 stops working, and the fan 11 drives the indoor air from the water side return air of the unit into the condenser chamber 24, passes through the condenser 15 to form cold air, and then passes through the evaporator chamber 22 and the fan chamber 21 in sequence back to the room, completing the cooling air process of the pure cooling medium refrigeration mode. When the dual-cold-source air conditioner of the present invention is in the mixed cooling mode, the movable baffle 25 is in a vertical position, the compressor 14 and the throttling device 13 are working normally, and the fan 11 drives the indoor air from the water-side return air of the unit into the condenser chamber 24, passes through the condenser 15 for a primary heat exchange to form a first-level cold air, then enters the evaporator chamber 22 for a secondary heat exchange with the evaporator 12 to form a second-level cold air, and finally returns to the room through the fan chamber 21, completing the cooling air flow of the mixed cooling mode. When the dual-cold-source air conditioner of the present invention is in the compression cooling mode, the movable baffle 25 is in a horizontal position, the compressor 14 and the throttling device 13 are working normally, and the fan 11 drives the indoor air from the fluorine-side return air of the unit into the evaporator chamber 22, passes through the evaporator 12 to form a cold air, and then returns to the room through the fan chamber 21, completing the cooling air flow of the compression cooling mode.

[0121] The dual-cooling-source air conditioner of this invention, through its integrated design, can meet the needs of projects with limited installation space, making the product more competitive in the market. Furthermore, its natural cooling-source heat exchange refrigeration technology solves the mismatch between water-cooled computer room air conditioners and indoor loads during construction, improving unit energy efficiency and significantly enhancing product cost-effectiveness and reliability.

[0122] It is easy for those skilled in the art to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0123] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A dual-cold source air conditioner, characterized by: The invention comprises a compressor (14), a condenser (15), a throttling device (13) and an evaporator (12), wherein the compressor (14), the condenser (15), the throttling device (13) and the evaporator (12) are connected to form a refrigerant circulation loop; the condenser (15) has a first heat exchange channel (151) and a second heat exchange channel (152) which can exchange heat with each other; the condenser (15) is connected in series to the refrigerant circulation loop through the first heat exchange channel (151), and the second heat exchange channel (152) is used to pass a cooling medium to allow the cooling medium to flow; The dual-cold source air conditioner has a return air channel (100), and the evaporator (12) is located in the return air channel (100) to perform heat exchange with the return air in the return air channel (100); wherein the return air channel (100) is also used to selectively allow the return air to blow through the condenser (15) or not blow through the condenser (15), so that when the return air blows through the condenser (15), the condenser (15) and the return air can perform heat exchange.

2. The dual-cold-source air conditioner according to claim 1, characterized in that: The invention also comprises a casing (1), wherein the casing (1) has an evaporator cavity (22) for installing the evaporator (12) and a condenser cavity (24) for installing the condenser (15), and the casing (1) is also provided with an air outlet (211) communicating with the evaporator cavity (22); the return air channel (100) comprises the evaporator cavity (22) and the condenser cavity (24); the evaporator cavity (22) has a first return air port (221), and the condenser cavity (24) has a second return air port (241); the condenser cavity (24) is communicated with the evaporator cavity (22) via a connecting channel (242), and both the first return air port (221) and the connecting channel (242) can be opened or closed; The return air channel (100) allows the return air to blow through the condenser (15) by closing the first return air port (221) and opening the connecting channel (242), and the return air channel (100) also prevents the return air from blowing through the condenser (15) by opening the first return air port (221) and closing the connecting channel (242).

3. The dual-cold-source air conditioner according to claim 2, characterized in that: The return air channel (100) further comprises a movable baffle (25), and the return air channel (100) closes the first return air port (221) and opens the connecting channel (242) through the movable baffle (25), or opens the first return air port (221) and closes the connecting channel (242); The movable baffle (25) is used to close the first return air outlet (221) and open the connecting channel (242) when the movable baffle (25) is moved to a first position; and the movable baffle (25) is used to open the first return air outlet (221) and close the connecting channel (242) when the movable baffle is moved to a second position.

4. The dual-cold-source air conditioner according to claim 3, characterized in that: The evaporator cavity (22) and the condenser cavity (24) are separated by a partition (2); the connecting channel (242) is arranged on the partition (2); the evaporator cavity (22) further has a first cavity wall (222) adjacent to the partition (2); the first return air port (221) is arranged on the first cavity wall (222); One end of the movable baffle (25) is rotatably connected between the partition (2) and the first cavity wall (222) so as to be movable to the first position or the second position by means of rotation.

5. The dual-cold-source air conditioner according to any one of claims 1 to 4, characterized in that: The dual-cold-source air conditioner further comprises a fan (11), and the fan (11) is used to drive the air flow in the return air channel (100); the dual-cold-source air conditioner has a pure cooling medium cooling mode, a mixed cooling mode, and a compression cooling mode; In the pure cooling medium refrigeration mode, the compressor (14) is turned off, and the return air channel (100) allows the return air to blow through the condenser (15); in the mixed refrigeration mode, the compressor (14) is turned on, and the return air channel (100) allows the return air to blow through the condenser (15); in the compression refrigeration mode, the compressor (14) is turned on, and the return air channel (100) does not allow the return air to blow through the condenser (15).

6. A control method for the dual-cold-source air conditioner according to claim 2-4, wherein the dual-cold-source air conditioner further comprises a fan (11), the fan (11) is used to drive the air flow in the return air duct (100); and the dual-cold-source air conditioner has a pure cooling medium refrigeration mode, a mixed cooling mode and a compression cooling mode; in the pure cooling medium refrigeration mode, the compressor (14) is turned off, and the return air duct (100) allows the return air to blow through the condenser (15); in the mixed cooling mode, the compressor (14) is turned on, and the return air duct (100) allows the return air to blow through the condenser (15); in the compression cooling mode, the compressor (14) is turned on, and the return air duct (100) does not allow the return air to blow through the condenser (15), characterized in that: The control method includes a method for determining and entering a cooling mode; wherein the method for determining and entering a cooling mode includes the following steps: Step S402: Turn on the fan (11); Step S403: detecting the inlet temperature T0 of the cooling medium in the second heat exchange channel (152), the return air temperature T1 of the second return air port (241), and the return air temperature T2 of the first return air port (221); Step S405: determining whether T0 < T1 and T0 < T2 are satisfied, wherein T0 is a preset temperature; If the conditions are met, the dual-cold-source air conditioner is controlled to enter the pure cooling medium cooling mode; If not, the dual-cold-source air conditioner is controlled to enter a mixed cooling mode or a compression cooling mode.

7. The control method according to claim 6, characterized in that: If the dual-cold-source air conditioner enters the pure cooling medium cooling mode, step S407 is executed: continuously monitoring the rising value ΔT1 of the return air temperature of the second return air outlet (241) within the time Δt, and judging whether ΔT1≥X is satisfied, where X is a preset temperature fluctuation upper deviation value; If so, the inlet temperature T0 of the cooling medium in the second heat exchange channel (152) and the return air temperature T1 of the second return air port (241) are detected, and it is determined whether T0 < T1 is satisfied; If T0<T1, the dual-cold-source air conditioner is controlled to enter the mixed cooling mode; otherwise, the dual-cold-source air conditioner is controlled to enter the compression cooling mode; If not, repeat step S407.

8. The control method according to claim 6, wherein: If the dual-cold-source air conditioner enters the mixed cooling mode, step S411 is executed: monitoring the rising value ΔT1 of the return air temperature of the second return air outlet (241) within the Δt time, and comparing ΔT1 with the preset temperature fluctuation upper deviation X and the preset temperature fluctuation lower deviation Y; if Y≤ΔT1<X, step S411 is repeated; if ΔT1<Y, the dual-cold-source air conditioner is controlled to enter the pure cooling medium cooling mode; if ΔT1≥X, the dual-cold-source air conditioner is controlled to enter the compression cooling mode.

9. The control method according to claim 6, characterized in that: If the dual-cold-source air conditioner enters the compression cooling mode, step S415 is executed: detecting the rising value ΔT2 of the return air temperature of the first return air outlet (221) within the Δt time, and judging whether ΔT2<Y is satisfied, where Y is a preset temperature fluctuation deviation value; If so, the inlet temperature T0 of the cooling medium in the second heat exchange channel (152) and the return air temperature T2 of the first return air port (221) are detected, and it is determined whether T0 < T2 is satisfied; if T0 < T2, the dual-cold-source air conditioner is controlled to switch to a mixed cooling mode; if T0 ≥ T2, the dual-cold-source air conditioner is kept in the compression cooling mode, and step S415 is repeated; If not, repeat step S415.

10. The control method according to any one of claims 6 to 9, wherein the dual-cold-source air conditioner further includes a movable baffle (25), the return air duct (100) closes the first return air inlet (221) and opens the connecting duct (242) through the movable baffle (25), or opens the first return air inlet (221) and closes the connecting duct (242); and the movable baffle (25) is used to close the first return air inlet (221) and open the connecting duct (242) when it moves to the first position; and the movable baffle (25) is used to open the first return air inlet (221) and close the connecting duct (242) when it moves to the second position, characterized in that: Controlling the dual-cold-source air conditioner to enter the pure cooling medium refrigeration mode specifically includes the following steps: Step S52: controlling the movable baffle (25) to move to the first position; Step S53: determining whether the compressor (14) is turned on; if so, turning off the compressor (14) and the throttling device (13) in sequence; if not, keeping the compressor (14) in the off state; And / or, controlling the dual-cold-source air conditioner to enter the hybrid cooling mode specifically comprises the following steps: step S62: controlling the movable baffle (25) to move to the first position; step S63: determining whether the compressor (14) is turned on; if not, turning on the compressor (14) and the throttling device (13); if so, keeping the compressor (14) and the throttling device (13) turned on; And / or, controlling the dual-cold-source air conditioner to enter the compression cooling mode specifically includes the following steps: step S72: controlling the movable baffle (25) to move to the second position; step S73: judging whether the compressor (14) is turned on; if not, turning on the compressor (14) and the throttling device (13); if so, keeping the compressor (14) and the throttling device (13) turned on.

11. A storage medium (92), characterized in that: The memory stores a program; when the program is executed, the control method according to any one of claims 6 to 10 is implemented.

12. A control device, characterized in that: The invention comprises a processor (91) and the storage medium (92) as claimed in claim 11, wherein the processor (91) is configured to execute a program stored in the storage medium (92).

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