Method and device for controlling heat pump clothes dryer, storage medium and electronic device

Abstract

The invention relates to the technical field of clothes drying, particularly provides a method and device for controlling a heat pump clothes dryer, a storage medium and an electronic device, and aims to solve the problems that the heat dissipation capacity of a heat dissipation fan is limited, and the heat dissipation requirement of a compressor cannot be met under the condition that the environment temperature is too high in the prior art. In order to achieve the purpose, the method comprises the steps that the exhaust temperature of a compressor is obtained; and under the condition that the exhaust temperature is larger than or equal to a first temperature threshold value, the cooling fan is controlled to supply air to the compressor and / or the cooling pipe is controlled to be communicated with the external water source according to the exhaust temperature. Based on the technical scheme, two heat dissipation modes of the heat dissipation fan and the water-cooling heat dissipation are adopted, the heat dissipation capacity of the water-cooling heat dissipation is high, the influence of the environment temperature on the water-cooling heat dissipation is small, the heat dissipation capacity of the compressor is improved, and the influence of the environment temperature on the heat dissipation of the compressor is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of clothes drying, and in particular, to a method, a device, a storage medium, and an electronic device for controlling a heat pump clothes dryer. Background Art

[0002] A heat pump clothes dryer is a clean household appliance that uses heat pump technology to evaporate the moisture in clothes in a timely manner. It can dry clothes relatively quickly, making the drying of clothes no longer affected by the weather, and is widely used by household and commercial users. The heat pump clothes dryer includes a refrigerant circulation circuit, a compressor and a condenser provided on the refrigerant circulation circuit, and a blower. The compressor does work to drive the refrigerant to circulate along the refrigerant circulation circuit. The refrigerant condenses in the condenser to release heat and heat the air around the condenser. The blower drives the hot air to circulate between the condenser and the drying chamber to dry the clothes. If the temperature of the compressor is too high, it will affect the drying effect of the heat pump clothes dryer and the service life of the compressor. Therefore, the heat dissipation of the compressor is very important.

[0003] In the related art, the heat pump clothes dryer includes a cooling fan to accelerate the air flow around the compressor. However, the heat dissipation capacity of the cooling fan in the related art is limited, and it cannot meet the heat dissipation requirements of the compressor in the case of too high ambient temperature.

[0004] Correspondingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that the heat dissipation capacity of the cooling fan in the related art is limited and cannot meet the heat dissipation requirements of the compressor in the case of too high ambient temperature.

[0006] In a first aspect, the present invention provides a method for controlling a heat pump clothes dryer, where the heat pump clothes dryer includes a compressor, a cooling fan, and a cooling pipe. The cooling fan is disposed close to the compressor, and the cooling pipe is disposed on the outer wall of the compressor and can communicate with an external water source; the method includes: obtaining the exhaust temperature of the compressor; and when the exhaust temperature is greater than or equal to a first temperature threshold, controlling the cooling fan to supply air to the compressor and / or controlling the cooling pipe to communicate with the external water source according to the exhaust temperature.

[0007] In a specific implementation manner of the above method, the step of "controlling the cooling fan to supply air to the compressor and / or controlling the cooling pipe to communicate with the external water source according to the exhaust temperature" specifically includes: when T s1 ≤T<T s2 , controlling the cooling fan to supply air to the compressor; when T s2 ≤T<T s3When the condition is satisfied, control the heat dissipation pipe to communicate with the external water source; when T≥T s3 When the condition is satisfied, control the heat dissipation fan to supply air to the compressor, and control the heat dissipation pipe to communicate with the external water source; where T is the exhaust temperature, T s1 is the first temperature threshold, T s2 is the second temperature threshold, T s3 is the third temperature threshold, T s1 <T s2 <T s3 .

[0008] In a specific embodiment of the above method, when T≥T s3 When the condition is satisfied, the method further includes: while controlling the heat dissipation fan to supply air to the compressor and controlling the heat dissipation pipe to communicate with the external water source, control the operating frequency of the compressor to decrease by a preset frequency value.

[0009] In a specific embodiment of the above method, the step of "controlling the heat dissipation pipe to communicate with the external water source" further includes: obtaining a preset relationship between the flow rate of condensed water in the heat dissipation pipe and the exhaust temperature; adjusting the flow rate of condensed water in the heat dissipation pipe according to the preset relationship.

[0010] In a specific embodiment of the above method, the preset relationship satisfies the following formula: L=-0.0002T 4 +0.0066T 3 -0.0437T 2 +0.3842T+0.4694;

[0011] In the formula, L is the flow rate of condensed water in the heat dissipation pipe, and T is the exhaust temperature.

[0012] In a specific embodiment of the above method, the step of "controlling the heat dissipation fan to supply air to the compressor" further includes: adjusting the rotational speed of the heat dissipation fan according to the change value of the exhaust temperature.

[0013] In a specific embodiment of the above method, the step of "adjusting the rotational speed of the heat dissipation fan according to the change value of the exhaust temperature" further includes: when ΔT2≤ΔT / ΔT0<ΔT1, control the rotational speed of the heat dissipation fan to increase by n1 revolutions; when ΔT / ΔT0<ΔT2, control the rotational speed of the heat dissipation fan to increase by n2 revolutions; where ΔT is the change value of the exhaust temperature, ΔT0 is the change threshold of the exhaust temperature, ΔT1 is the first proportional threshold, ΔT2 is the second proportional threshold, ΔT1>ΔT2, and n1<n2.

[0014] In a second aspect, the present invention provides a device for controlling a heat pump dryer, comprising: a detection module for detecting the exhaust temperature of a compressor; a control module for controlling the cooling fan to supply air to the compressor and / or controlling the cooling pipe to communicate with an external water source according to the exhaust temperature when the exhaust temperature is greater than or equal to a first temperature threshold.

[0015] In a third aspect, the present invention provides a computer-readable storage medium, which includes a stored program, wherein the program, when running, executes the method described in any one of the above.

[0016] In a fourth aspect, the present invention provides an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to execute the method described in any one of the above through the computer program.

[0017] In the case of adopting the above technical solutions, the present invention controls the cooling fan to supply air to the compressor and / or controls the cooling pipe to communicate with an external water source according to the exhaust temperature of the compressor to dissipate heat from the compressor. Compared with the related art that only uses the cooling fan to dissipate heat from the compressor, the present invention adopts two heat dissipation methods, namely, the cooling fan and water-cooled heat dissipation. The water-cooled heat dissipation has a higher heat dissipation capacity and is less affected by the ambient temperature, which is beneficial to improving the heat dissipation capacity for the compressor and reducing the influence of the ambient temperature on the compressor heat dissipation. In addition, the present invention switches the heat dissipation method for the compressor according to the exhaust temperature of the compressor, so that the heat dissipation capacity of the heat pump dryer for the compressor matches the heat dissipation demand of the compressor, which can not only meet the heat dissipation demand of the compressor but also help reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings, in which:

[0019] Figure 1 is a partial structural schematic diagram of a heat pump dryer provided by an embodiment of the present invention;

[0020] Figure 2 is a main step flowchart of a method for controlling a heat pump dryer provided by an embodiment of the present invention;

[0021] Figure 3 is Figure 2 a detailed flowchart of a step in the method shown;

[0022] Figure 4 is a preset relationship diagram between the flow rate of condensed water in the cooling pipe and the exhaust temperature;

[0023] Figure 5 is a schematic diagram of a device for controlling a heat pump dryer provided by an embodiment of the present invention. Reference Signs:

[0024] 100. Compressor; 200. Heat dissipation pipe; 300. Detection module; 400. Control module. Specific implementation manner

[0025] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0027] The method for controlling a heat pump dryer provided by the present invention is applied to a heat pump dryer. Figure 1 is a partial structural schematic diagram of a heat pump dryer provided by the present invention. The following combines Figure 1 As shown, the heat pump dryer of the present invention will be described.

[0028] Combined with Figure 1 As shown, the heat pump dryer provided by the present invention includes a compressor 100, a heat dissipation fan and a heat dissipation pipe 200. The heat dissipation fan is arranged close to the compressor 100, and the heat dissipation pipe 200 is arranged on the outer wall of the compressor 100 and can communicate with an external water source. The present invention adopts two heat dissipation methods: heat dissipation by a heat dissipation fan and water-cooled heat dissipation. The water-cooled heat dissipation has a higher heat dissipation capacity and is less affected by the ambient temperature, which is beneficial to improving the heat dissipation ability of the compressor and reducing the influence of the ambient temperature on the heat dissipation of the compressor.

[0029] Preferably, combined with Figure 1 As shown, the heat dissipation pipe 200 is wound around the outer surface of the compressor 100. With this arrangement, the contact area between the heat dissipation pipe 200 and the compressor 100 can be increased, and the heat dissipation effect for the compressor 100 can be improved.

[0030] Preferably, the heat dissipation pipe 200 is communicated with an external water source through a water inlet solenoid valve. The water inlet solenoid valve can control the water inflow rate of the heat dissipation pipe 200. Such a setting can adjust the flow rate of the cooling water according to the heat dissipation requirement of the compressor.

[0031] Preferably, the heat dissipation fan is a silent fan. By setting the heat dissipation fan as a silent fan, it is beneficial to reduce noise.

[0032] The heat pump clothes dryer includes a box body and a heat pump system. A clothes drying cavity is constructed inside the box body, and the clothes drying cavity is used for holding clothes. The heat pump system includes a refrigerant circulation loop, a compressor, a condenser, and a condensation fan. The compressor and the condenser are arranged on the refrigerant circulation loop, and the condensation fan is arranged close to the condenser. The compressor does work to drive the refrigerant to circulate along the refrigerant circulation loop. The refrigerant condenses in the condenser to release heat and heats the air around the condenser. The condensation fan drives the hot air to circulate between the condenser and the clothes drying cavity to dry the clothes. It can be understood that the heat pump clothes dryer in the present invention refers to an electrical appliance that uses heat pump technology to dry clothes, that is, an electrical appliance that at least includes the above heat pump system. The heat pump clothes dryer in the present invention includes a clothes dryer and also includes a washing and drying integrated machine that uses heat pump technology.

[0033] When the heat pump clothes dryer is a washing and drying integrated machine, the water inlet of the heat dissipation pipe is communicated with the water inlet of the washing machine, and the two share the same water inlet, which is convenient for setting.

[0034] In a first aspect, the present invention provides a method for controlling a heat pump clothes dryer.

[0035] Figure 2 It is a main step flowchart of the method for controlling a heat pump clothes dryer provided by an embodiment of the present invention. Combined with Figure 2 as shown, the method for controlling a heat pump clothes dryer provided by the present invention includes the following steps:

[0036] S10, obtain the exhaust temperature of the compressor.

[0037] S20, when the exhaust temperature is greater than or equal to a first temperature threshold, control the heat dissipation fan to blow air to the compressor and / or control the heat dissipation pipe to be communicated with an external water source according to the exhaust temperature. Among them, controlling the heat dissipation fan to blow air to the compressor and / or controlling the heat dissipation pipe to be communicated with an external water source includes the following three situations: only controlling the heat dissipation fan to blow air to the compressor, only controlling the heat dissipation pipe to be communicated with an external water source, and controlling the heat dissipation fan to blow air to the compressor while controlling the heat dissipation pipe to be communicated with an external water source.

[0038] In the case of adopting the above technical solution, the present invention controls the cooling fan to supply air to the compressor and / or controls the cooling pipe to communicate with an external water source according to the exhaust temperature of the compressor to dissipate heat from the compressor. Compared with the related art that only uses the cooling fan to dissipate heat from the compressor, the present invention adopts two heat dissipation methods, namely, the cooling fan and water cooling. The heat dissipation capacity of water cooling is relatively high and less affected by the ambient temperature, which is beneficial to improving the heat dissipation capacity of the compressor and reducing the influence of the ambient temperature on the heat dissipation of the compressor. In addition, the present invention switches the heat dissipation method for the compressor according to the exhaust temperature of the compressor, so that the heat dissipation capacity of the heat pump dryer for the compressor matches the heat dissipation demand of the compressor, which can not only meet the heat dissipation demand of the compressor, but also help reduce energy consumption.

[0039] Preferably, when the exhaust temperature of the compressor is less than the first temperature threshold, the cooling fan is in a shutdown state, and the cooling pipe is disconnected from the external water source. When the exhaust temperature of the compressor is less than the first temperature threshold, there is no need to dissipate heat from the compressor.

[0040] Preferably, the heat pump dryer further includes a temperature sensor for detecting the exhaust temperature of the compressor.

[0041] Figure 3 Yes Figure 2 is a detailed flowchart of a step in the method shown, in combination with Figure 3 shown, in this preferred embodiment, the step of "controlling the cooling fan to supply air to the compressor and / or controlling the cooling pipe to communicate with the external water source according to the exhaust temperature" specifically includes:

[0042] S201, when T s1 ≤T<T s2 , control the cooling fan to supply air to the compressor. At this time, the cooling pipe is disconnected from the external water source.

[0043] S202, when T s2 ≤T<T s3 , control the cooling pipe to communicate with the external water source. At this time, the cooling fan is in a shutdown state.

[0044] S203, when T≥T s3 , control the cooling fan to supply air to the compressor and control the cooling pipe to communicate with the external water source.

[0045] Wherein, T is the exhaust temperature, T s1 is the first temperature threshold, T s2 is the second temperature threshold, T s3 is the third temperature threshold, T s1 <T s2 <T s3 .

[0046] When Ts1 ≤T < T s2 When the difference between the exhaust temperature of the compressor and the first temperature threshold is relatively small, the exhaust temperature of the compressor can be rapidly decreased by cooling the compressor with the cooling fan. When T s2 ≤T < T s3 When the difference between the exhaust temperature of the compressor and the first temperature threshold is relatively large, the exhaust temperature of the compressor can be rapidly decreased by water-cooling. When T ≥ T s3 When the exhaust temperature of the compressor is too high, the cooling requirements of the compressor can be met only by cooling with the cooling fan and water-cooling simultaneously, so that the temperature of the compressor can be rapidly decreased.

[0047] Preferably, T s1 ≤ 93°C. For example, the value of T s1 is 92°C.

[0048] Preferably, 93°C < T s2 ≤ 100°C. For example, the value of T s2 is 98°C.

[0049] Preferably, 100°C < T s3 < 105°C. For example, the value of T s2 is 102°C.

[0050] Preferably, when the exhaust temperature of the compressor is greater than or equal to the alarm temperature and the duration is greater than the duration threshold, the compressor is controlled to stop. If the exhaust temperature continuously exceeds the alarm temperature, the hardware of the compressor will be damaged. By stopping the compressor, the compressor can be prevented from being damaged.

[0051] Preferably, the alarm temperature is 106°C and the duration threshold is 5 min. When the exhaust temperature of the compressor remains above 106°C for 5 min, the compressor stops.

[0052] In this preferred embodiment, when T ≥ T s3 the method provided by the present invention further includes: while controlling the cooling fan to send air to the compressor and controlling the cooling pipe to communicate with an external water source, controlling the operating frequency of the compressor to decrease by a preset frequency value. When T ≥ T s3 when the exhaust temperature of the compressor is too high, controlling the compressor to reduce the frequency is beneficial to protecting the hardware of the compressor.

[0053] For example, the preset frequency value is 15% of the current frequency, T s3 is 102°C. When the exhaust temperature of the compressor is greater than 102°C, the operating frequency of the compressor is decreased by 15% to avoid damage to the hardware of the compressor.

[0054] In this preferred embodiment, the step of "controlling the heat dissipation pipe to communicate with an external water source" further includes: obtaining a preset relationship between the flow rate of condensed water in the heat dissipation pipe and the exhaust temperature; adjusting the flow rate of condensed water in the heat dissipation pipe according to the preset relationship. According to the preset relationship, the optimal flow rate of condensed water corresponding to the exhaust temperature can be determined, so that the exhaust temperature of the compressor can be rapidly reduced, and unnecessary waste caused by too fast a flow rate of condensed water can be avoided.

[0055] In this preferred embodiment, the preset relationship between the flow rate of condensed water in the heat dissipation pipe and the exhaust temperature satisfies the following formula:

[0056] L = -0.0002T 4 + 0.0066T 3 - 0.0437T 2 + 0.3842T + 0.4694.

[0057] In the formula, L is the flow rate of condensed water in the heat dissipation pipe, and T is the exhaust temperature.

[0058] Combined with Figure 4 as shown, the present invention obtains multiple groups of optimal flow rates of condensed water corresponding to the exhaust temperature through experimental tests, and obtains the preset relationship between the flow rate of condensed water and the exhaust temperature through simulation.

[0059] In this preferred embodiment, the step of "controlling the cooling fan to supply air to the compressor" further includes: adjusting the rotation speed of the cooling fan according to the change value of the exhaust temperature. Under the influence of factors such as ambient temperature, ambient humidity, and wear, the cooling effect of the cooling fan for the compressor will have certain fluctuations. For example, when the rotation speed of the cooling fan is the same but the ambient temperature is different, the cooling effect of the cooling fan for the compressor is different. Factors such as ambient temperature, ambient humidity, and wear can all affect the change of the exhaust temperature. Therefore, adjusting the rotation speed of the cooling fan according to the change value of the exhaust temperature can comprehensively consider the influence of multiple factors such as ambient temperature, ambient humidity, and wear, improve the accuracy of cooling the compressor, and rapidly reduce the exhaust temperature of the compressor. If the change value of the exhaust temperature is too small, the cooling rate of the compressor is slow, which will affect the working state of the compressor.

[0060] Preferably, the calculation formula for the change value of the exhaust temperature is ΔT = ΔT t - ΔT t-1 , where ΔT is the change value of the exhaust temperature, ΔT t is the exhaust temperature of the current cycle, and ΔT t-1 is the exhaust temperature of the previous cycle.

[0061] In this preferred embodiment, the step of "adjusting the rotation speed of the cooling fan according to the change value of the exhaust temperature" further includes: when ΔT2 ≤ ΔT / ΔT0 < ΔT1, controlling the rotation speed of the cooling fan to increase by n1 revolutions; when ΔT / ΔT0 < ΔT2, controlling the rotation speed of the cooling fan to increase by n2 revolutions. Wherein, ΔT is the change value of the exhaust temperature, ΔT0 is the change threshold of the exhaust temperature, ΔT1 is the first proportional threshold, ΔT2 is the second proportional threshold, ΔT1 > ΔT2, and n1 < n2.

[0062] When ΔT2 ≤ ΔT / ΔT0 < ΔT1, affected by environmental temperature, environmental humidity or other factors, the change value of the exhaust temperature does not reach the change threshold of the exhaust temperature. The rotation speed of the cooling fan increases by n1 revolutions on the basis of the current rotation speed, so that more air flows through the surface of the compressor, accelerating the heat dissipation speed of the compressor. When ΔT / ΔT0 < ΔT2, the change value of the exhaust temperature is far from reaching the change threshold of the exhaust temperature. The rotation speed of the cooling fan increases by n2 revolutions on the basis of the current rotation speed, so that more air flows through the surface of the compressor, further accelerating the heat dissipation speed of the compressor.

[0063] In a second aspect, the present invention provides a device for controlling a heat pump dryer.

[0064] Combined with Figure 5 As shown, the device includes a detection module 300 and a control module 400. The detection module 300 is used to detect the exhaust temperature of the compressor. The control module 400 is used to, when the exhaust temperature is greater than or equal to the first temperature threshold, control the cooling fan to supply air to the compressor and / or control the cooling pipe to communicate with an external water source according to the exhaust temperature. In the case of adopting the above technical solution, the device for controlling a heat pump dryer provided by the present invention controls the cooling fan to supply air to the compressor and / or controls the cooling pipe to communicate with an external water source according to the exhaust temperature of the compressor to dissipate heat from the compressor. Compared with the related art that only uses the cooling fan to dissipate heat from the compressor, the present invention uses two heat dissipation methods, namely, the cooling fan and water-cooled heat dissipation. The water-cooled heat dissipation has a higher heat dissipation capacity and is less affected by the environmental temperature, which is beneficial to improving the heat dissipation capacity of the compressor and reducing the influence of the environmental temperature on the heat dissipation of the compressor. In addition, the present invention switches the heat dissipation method for the compressor according to the exhaust temperature of the compressor, and the heat dissipation capacity of the heat pump dryer for the compressor matches the heat dissipation demand of the compressor, which can not only meet the heat dissipation demand of the compressor, but also help reduce energy consumption.

[0065] The present invention provides a computer-readable storage medium. The computer-readable storage medium includes a stored program, wherein the program, when running, executes the method for controlling a heat pump dryer in any of the above embodiments.

[0066] The technical solution of the present invention can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, such as: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc, etc., which are various media that can store program codes.

[0067] The present invention provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to execute the method for controlling a heat pump dryer in any of the above embodiments through the computer program.

[0068] When the logical instructions in the memory can be implemented in the form of software functional units and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0069] As a computer-readable storage medium, the memory can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor executes functional applications and data processing by running the program instructions / modules stored in the memory, that is, implements the method for controlling a refrigerator in the above embodiments.

[0070] The memory may include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory may include a high-speed random access memory and may also include a non-volatile memory.

[0071] Although the above steps are described in the above sequential order in the above embodiments, those skilled in the art can understand that in order to achieve the effects of the present embodiment, different steps do not have to be executed in such an order, and they can be executed simultaneously (in parallel) or in a reversed order. These simple changes are all within the protection scope of the present invention.

[0072] So far, the technical solution of the present invention has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A method for controlling a heat pump dryer, characterized in that, The heat pump dryer includes a compressor, a cooling fan and a cooling pipe. The cooling fan is arranged close to the compressor, and the cooling pipe is arranged on the outer wall of the compressor and can be communicated with an external water source; The method includes: Obtaining the exhaust temperature of the compressor; When the exhaust temperature is greater than or equal to a first temperature threshold, controlling the cooling fan to blow air to the compressor and / or controlling the cooling pipe to be communicated with the external water source according to the exhaust temperature.

2. The method according to claim 1, characterized in that, The step of "controlling the cooling fan to blow air to the compressor and / or controlling the cooling pipe to be communicated with the external water source according to the exhaust temperature" specifically includes: When at T s1 ≤ T < T s2 , control the cooling fan to supply air to the compressor; When at T s2 ≤ T < T s3 , control the heat dissipation pipe to communicate with the external water source; When T ≥ T s3 control the cooling fan to supply air to the compressor, and control the cooling pipe to communicate with the external water source; where, T is the exhaust gas temperature, T s1 is the first temperature threshold, T s2 is the second temperature threshold, T s3 is the third temperature threshold, T s1 < T s2 < T s3 .

3. The method according to claim 2, characterized in that, When T≥T s3 the method further includes: While controlling the cooling fan to blow air to the compressor and controlling the cooling pipe to be communicated with the external water source, controlling the operating frequency of the compressor to be reduced by a preset frequency value.

4. The method according to any one of claims 1 to 3, characterized in that The step of "controlling the cooling pipe to be communicated with the external water source" further includes: Obtaining a preset relationship between the flow rate of condensed water in the cooling pipe and the exhaust temperature; Adjusting the flow rate of condensed water in the cooling pipe according to the preset relationship.

5. The method according to claim 4, wherein The preset relationship satisfies the following formula: L = -0.0002T 4 +0.0066T 3 -0.0437T 2 +0.3842T + 0.4694; In the formula, L is the flow rate of condensed water in the cooling pipe, and T is the exhaust temperature.

6. The method according to any one of claims 1 to 3, characterized in that The step of "controlling the cooling fan to blow air to the compressor" further includes: Adjusting the rotation speed of the cooling fan according to the change value of the exhaust temperature.

7. The method according to claim 6, wherein The step of "adjusting the rotation speed of the cooling fan according to the change value of the exhaust temperature" further includes: When ΔT2 ≤ ΔT / ΔT0 < ΔT1, controlling the rotation speed of the cooling fan to increase by n1 revolutions; When ΔT / ΔT0 < ΔT2, controlling the rotation speed of the cooling fan to increase by n2 revolutions; Wherein, ΔT is the change value of the exhaust temperature, ΔT0 is the change threshold of the exhaust temperature, ΔT1 is the first proportional threshold, ΔT2 is the second proportional threshold, ΔT1 > ΔT2, and n1 < n2.

8. A device for controlling a heat pump dryer, characterized in that, Includes: A detection module for detecting the exhaust temperature of the compressor; A control module for controlling the cooling fan to blow air to the compressor and / or controlling the cooling pipe to be communicated with the external water source according to the exhaust temperature when the exhaust temperature is greater than or equal to a first temperature threshold.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 7 when running.

10. An electronic device, comprising a memory and a processor, characterized in that, A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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