Control method and control device of heat pump equipment, electronic equipment and storage medium

Abstract

The invention provides a control method and device of heat pump equipment, electronic equipment and a storage medium. The control method comprises the steps that the environment temperature and the water outlet temperature of the water outlet end of a water using module are obtained; when the environment temperature is smaller than a preset freezing environment threshold value and the outlet water temperature is smaller than a preset freezing water temperature threshold value, a first circulating water pump is controlled to be started; when the first electric heating module is in the power-on state, the power-on state of the first electric heating module is kept, and the first operation duration of the first electric heating module is obtained; when the first operation duration is equal to a preset first duration threshold value, the first electric heating module is closed, and the compressor is controlled to operate; and when the second operation duration of the compressor is equal to a preset second duration threshold value, the compressor is closed, and the first electric heating module is restarted. According to the scheme provided by the embodiment of the invention, the risk of breakage of the pipeline in the compressor can be reduced, and the pipeline is protected against mechanical damage.

Description

Technical Field

[0001] The present application relates to, but is not limited to, the technical field of heat pump equipment, and in particular to a control method, a control device, an electronic device and a storage medium for heat pump equipment. Background Art

[0002] In low-temperature environments, the outer surface temperature of pipes in heat pump systems, especially those exposed to the outside air, may drop below freezing due to heat exchange with the surrounding environment. At this time, water vapor in the air will directly condense into ice on the outer surface of the pipe, or liquid water formed on the surface of the pipe due to condensation will quickly freeze at low temperatures; the ice layer on the outer surface of the pipe will form an insulating layer, reducing the heat exchange efficiency between the pipe and the surrounding environment, thereby affecting the heating capacity of the heat pump. In addition, the volume of ice is larger than that of water of the same mass, so when water freezes on the surface of the pipe, the volume expansion may cause additional mechanical stress on the pipe material, and long-term action may cause the pipe to rupture or deform. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The embodiments of the present application provide a control method, a control device, an electronic device and a storage medium for a heat pump device, which can reduce the risk of rupture of a pipeline in a compressor and protect the pipeline from mechanical damage.

[0005] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application proposes a control method for a heat pump device, wherein the heat pump device includes a water use module, a compressor, a first electric heating module and a control module, wherein the compressor and the first electric heating module are electrically connected to the control module respectively, and the compressor is connected to the water use module through a circulation pipeline, wherein the first heating module is arranged on the circulation pipeline, and a first circulation water pump is arranged in the circulation pipeline, wherein the control method includes: obtaining the ambient temperature and the outlet water temperature of the water outlet end of the water use module; when the ambient temperature is less than a preset freezing environment threshold value, and the outlet water temperature is less than a preset freezing water temperature threshold value, controlling the first circulation water pump to turn on; when the first electric heating module is in a power-on state, maintaining the power-on state of the first electric heating module, and obtaining the first operating time of the first electric heating module; when the first operating time is equal to a preset first duration threshold value, turning off the first electric heating module and controlling the compressor to run; when the second operating time of the compressor is equal to a preset second duration threshold value, turning off the compressor and restarting the first electric heating module.

[0006] In one embodiment, the control method also includes: obtaining the working state of the heat pump equipment; when the working state is the shutdown state, the ambient temperature is lower than the freezing environment threshold, and the outlet water temperature is lower than the freezing water temperature threshold, controlling the first circulating water pump to operate, and alternately controlling the compressor and the first electric heating module to operate for a preset cycle time.

[0007] In one embodiment, the control method also includes: detecting the water flow state in the circulation pipe, and when the water flow state is normal and the compressor is in the on state, obtaining the third operating time of the compressor; when the third operating time is equal to a preset third duration threshold, turning off the compressor and controlling the first electric heating module to run for a preset switching time.

[0008] In one embodiment, the heat pump system also includes a water tank, the circulation pipeline includes a first pipeline and a second pipeline, the water tank is connected to the water use module through the first pipeline, a second electric heating module is arranged in the water tank, the water tank is connected to the compressor through the second pipeline, the first circulation water pump is arranged on the first pipeline, a second circulation water pump is arranged on the second pipeline, and the first electric heating module is arranged on the second pipeline. The control method also includes: when the water flow state of the first pipeline is normal and the water flow state of the second pipeline is abnormal, stop running the compressor, start the first circulation water pump, turn off the second circulation water pump, and control the second electric heating module to continue to run; obtain the fault duration, when the fault duration is equal to the preset adjustment time threshold, control the second circulation water pump to start, and obtain the water flow state of the second pipeline again; when the water flow state of the second pipeline is abnormal, turn off the second circulation water pump again.

[0009] In one embodiment, the control method further includes: obtaining the number of abnormal judgments when the water flow state of the second pipeline is detected to be abnormal; when the number of abnormal judgments is equal to a preset number threshold within a preset judgment period, disabling the compressor.

[0010] In one embodiment, the control method also includes: when the water flow state of the second pipeline is normal, turning off the second circulating water pump, controlling the operation of the compressor, and recording the fourth operation time; when the fourth operation time is equal to the preset third duration threshold, turning off the compressor, controlling the operation of the second circulating water pump, and recording the fifth operation time; when the fifth operation time is equal to the preset fourth duration threshold, turning off the second circulating water pump again and controlling the operation of the compressor.

[0011] In one embodiment, the control method further includes: when the outlet water temperature is equal to a preset high temperature threshold, turning off the first electric heating module and the compressor, and controlling the operation of the first circulating water pump.

[0012] To achieve the above-mentioned purpose, the second aspect of the present application proposes a control device for a heat pump device, the heat pump device includes a water use module, a compressor, a first electric heating module and a control module, the compressor and the first electric heating module are electrically connected to the control module respectively, the compressor is connected to the water use module through a circulation pipeline, and a first circulation water pump is arranged in the circulation pipeline, and the control device includes: a temperature detection module, which is used to obtain the ambient temperature and the outlet water temperature of the water outlet end of the water use module; a first regulation module, which is used to control the circulation water pump to turn on when the ambient temperature is less than a preset freezing environment threshold and the outlet water temperature is less than a preset freezing water temperature threshold; a timing module, which is used to keep the first electric heating module in the power-on state when the first electric heating module is in the power-on state, and obtain the first operating time of the first electric heating module; a second regulation module, which is used to turn off the first electric heating module and control the operation of the compressor when the first operating time is equal to the preset first duration threshold; a third regulation module, which is used to turn off the compressor and restart the first electric heating module when the second operating time of the compressor is equal to the preset second duration threshold.

[0013] To achieve the above-mentioned purpose, the third aspect of the present application proposes an electronic device, which includes a memory and a processor, the memory stores a computer program, and the processor implements the control method of the heat pump device as described in the first aspect when executing the computer program.

[0014] To achieve the above-mentioned purpose, the fourth aspect of the present application proposes a storage medium, which stores a computer program, and is characterized in that when the computer program is executed by a processor, it implements the control method of the heat pump device as described in the first aspect.

[0015] According to the solution provided in the embodiment of the present application, in the heat pump equipment, the hot water is first heated by the first electric heating module or the compressor, and then the heated hot water is transported to the water use module through the circulation pipe; in the water use module, after the hot water completes its function, it will return to the first electric heating module or the compressor through the water outlet end again, and the water temperature of the circulation pipe section from the water outlet end of the water use module to the first electric heating module or the compressor is relatively low, which makes this section of the circulation pipe the area most prone to freezing in the entire heat pump equipment; therefore, in a low temperature environment, that is, when the ambient temperature is lower than the freezing environment threshold, the first electric heating module, due to its working principle, does not rely on heat exchange with the external environment, and therefore can achieve the highest heating efficiency. On the contrary, when the outer surface of the compressor pipe is frozen due to the low ambient temperature, the formation of the ice layer will significantly reduce its heat exchange efficiency. The ice layer, as an insulating layer, hinders the effective transfer of heat, resulting in the compressor being unable to exchange heat as efficiently as under ice-free conditions. Therefore, the heating efficiency of the compressor is negatively affected, thereby affecting the performance of the entire heat pump system. When the user chooses to use the first electric heating module for heating for a first operating time equal to the first duration threshold, the heat pump equipment switches to the compressor for heating. The heat energy generated by the compressor can directly act on the pipe, which helps to quickly melt the ice layer and restore the heat exchange capacity of the pipe, thereby improving the heat exchange efficiency of the entire system, so that the ice layer on the outer surface of the compressor pipe can be removed in a timely and effective manner, reducing the risk of rupture of the pipe inside the compressor, protecting the pipe from mechanical damage, and improving the safety and stability of the heat pump equipment.

[0016] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0018] Figure 1 An optional structural schematic diagram of a heat pump device provided in an embodiment of the present application;

[0019] Figure 2 An optional system block diagram of a heat pump device provided in an embodiment of the present application;

[0020] Figure 3 An optional flow chart of a control method for a heat pump device provided in an embodiment of the present application;

[0021] Figure 4 An optional flow chart of a control method in a shutdown state provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram of an optional process for switching the heating mode provided in an embodiment of the present application;

[0023] Figure 6 An optional flow chart of the water circulation method provided in the embodiment of the present application;

[0024] Figure 7 A schematic diagram of an optional flow chart of a method for controlling abnormal water flow provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of an optional flow chart of a normal water flow control method provided in an embodiment of the present application;

[0026] Fig. 9 Another optional flow chart of the control method of the heat pump device provided in the embodiment of the present application;

[0027] Fig.10 This is an optional structural schematic diagram of a control device for a heat pump device provided in an embodiment of the present application;

[0028] Fig.11 It is a schematic diagram of an optional hardware structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0030] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of this application, unless otherwise clearly defined, terms such as setting, installation, and electrical connection should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0033] At present, in low-temperature environments, the outer surface temperature of pipes in heat pump systems, especially those exposed to the outside air, may drop below freezing due to heat exchange with the surrounding environment. At this time, water vapor in the air will directly condense into ice on the outer surface of the pipe, or liquid water formed on the surface of the pipe due to condensation will quickly freeze at low temperatures; the ice layer on the outer surface of the pipe will form an insulating layer, reducing the heat exchange efficiency between the pipe and the surrounding environment, thereby affecting the heating capacity of the heat pump. In addition, the volume of ice is larger than that of water of the same mass, so when water freezes on the surface of the pipe, the volume expansion may cause additional mechanical stress on the pipe material, and long-term action may cause the pipe to rupture or deform.

[0034] In response to the problem that pipes are prone to rupture and deformation in low-temperature environments, the present application provides a control method, a control device, an electronic device and a storage medium for a heat pump device. The control method for the heat pump device includes: obtaining the ambient temperature and the water outlet temperature of the water outlet end of the water use module; when the ambient temperature is lower than a preset freezing environment threshold, and the water outlet temperature is lower than a preset freezing water temperature threshold, controlling the first circulating water pump to turn on; when the first electric heating module is in the on state, maintaining the on state of the first electric heating module, and obtaining the first operating time of the first electric heating module; when the first operating time is equal to the preset first duration threshold, turning off the first electric heating module and controlling the operation of the compressor; when the second operating time of the compressor is equal to the preset second duration threshold, turning off the compressor and restarting the first electric heating module. According to the solution provided in the embodiment of the present application, in the heat pump equipment, the hot water is first heated by the first electric heating module or the compressor, and then the heated hot water is transported to the water use module through the circulation pipe; in the water use module, after the hot water completes its function, it will return to the first electric heating module or the compressor through the water outlet end again, and the water temperature of the circulation pipe section from the water outlet end of the water use module to the first electric heating module or the compressor is relatively low, which makes this section of the circulation pipe the area most prone to freezing in the entire heat pump equipment; therefore, in a low temperature environment, that is, when the ambient temperature is lower than the freezing environment threshold, the first electric heating module, due to its working principle, does not rely on heat exchange with the external environment, and therefore can achieve the highest heating efficiency. On the contrary, when the outer surface of the compressor pipe is frozen due to the low ambient temperature, the formation of the ice layer will significantly reduce its heat exchange efficiency. The ice layer, as an insulating layer, hinders the effective transfer of heat, resulting in the compressor being unable to exchange heat as efficiently as under ice-free conditions. Therefore, the heating efficiency of the compressor is negatively affected, thereby affecting the performance of the entire heat pump system. When the user chooses to use the first electric heating module for heating for a first operating time equal to the first duration threshold, the heat pump equipment switches to the compressor for heating. The heat energy generated by the compressor can directly act on the pipe, which helps to quickly melt the ice layer and restore the heat exchange capacity of the pipe, thereby improving the heat exchange efficiency of the entire system, so that the ice layer on the outer surface of the compressor pipe can be removed in a timely and effective manner, reducing the risk of rupture of the pipe inside the compressor, protecting the pipe from mechanical damage, and improving the safety and stability of the heat pump equipment.

[0035] The control method, control device, electronic device and storage medium of the heat pump equipment provided in the embodiments of the present application are specifically described through the following embodiments. First, the control method of the heat pump equipment in the embodiments of the present application is described.

[0036] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0037] Reference Figure 1 and Figure 2 One embodiment of the present application provides a heat pump device, comprising:

[0038] Water use module 100;

[0039] The compressor 200 is connected to the water module 100 through a circulation pipeline, and a first circulation water pump 710 is provided at the water outlet of the water module 100;

[0040] A first electric heating module 310;

[0041] The control module 400 , the water using module 100 , the compressor 200 , the first circulating water pump 710 and the first electric heating module 310 are electrically connected to the control module 400 , respectively.

[0042] In a specific embodiment, the control module 400 is provided with a control panel. When the user uses the heat pump device for heating, the user can operate the control panel to choose to heat through the first electric heating module 310, heat through the compressor 200, or heat through the first electric heating module 310 and the compressor 200 at the same time.

[0043] In a specific embodiment, the control module 400 obtains the ambient temperature and the outlet water temperature of the water outlet end of the water use module 100; when the ambient temperature is lower than the preset freezing environment threshold and the outlet water temperature is lower than the preset freezing water temperature threshold, the first circulation water pump 710 is controlled to turn on; when the first electric heating module 310 is in the on state, the on state of the first electric heating module 310 is maintained, and the first operating time of the first electric heating module 310 is obtained; when the first operating time is equal to the preset first duration threshold, the first electric heating module 310 is turned off and the compressor 200 is controlled to operate; when the second operating time of the compressor 200 is equal to the preset second duration threshold, the compressor 200 is turned off and the first electric heating module 310 is restarted.

[0044] In a specific embodiment, when the ambient temperature is lower than a preset freezing environment threshold, the outlet water temperature is lower than a preset freezing water temperature threshold, and the compressor 200 is in the on state, the compressor 200 is kept in the on state, and when the sixth operating time of the compressor 200 is equal to the preset sixth operating time threshold, the compressor 200 is turned off and the first electric heating module 310 is started, and when the seventh operating time of the first electric heating module 310 is equal to the preset seventh operating time threshold, the first electric heating module 310 is turned off and the compressor 200 is restarted for heating.

[0045] In a specific embodiment, the heat pump device also includes a water tank 600, the circulating pipeline includes a first pipeline 510 and a second pipeline 520, the water tank 600 is connected to the water module 100 through the first pipeline 510, and the water tank 600 is connected to the compressor 200 through the second pipeline 520, the first electric heating module 310 is arranged on the second pipeline 520, and the second electric heating module 320 is arranged in the water tank 600, the first circulating water pump 710 is arranged on the first pipeline 510, and the second circulating water pump 720 is arranged on the second pipeline 520.

[0046] Specifically, the user can select "preheating mode" and "instant heating mode" by operating the control panel. If the user selects the preheating mode, when the user does not use the water module 100, the second circulating water pump 720 runs, the first circulating water pump 710 does not run, the first electric heating module 310, the second electric heating module 320 and the compressor 200 heat the hot water, and the heated hot water is stored in the water tank 600. When the user uses the water module 100, the first circulating water pump 710 runs; if the user selects the instant heating mode, when the user does not use the water module 100, the first circulating water pump 710, the second circulating water pump 720, the first electric heating module 310, the second electric heating module 320 and the compressor 200 do not run. When the user uses the water module 100, the first circulating water pump 710 and the second circulating water pump 720 run at the same time, and the first electric heating module 310, the second electric heating module 320 and the compressor 200 choose to run according to the user's further operation.

[0047] In addition, the compressor 200 is provided with an electronic expansion valve (not shown in the figure), which is used to control the flow rate of the heat transfer medium in the compressor 200. The opening control method of the electronic expansion valve is as follows:

[0048] Firstly, the instantaneous superheat of the heat transfer medium is obtained through a preset sampling frequency, wherein the instantaneous superheat refers to the difference between the actual temperature and the saturation temperature of the heat transfer medium under the same evaporation pressure;

[0049] Then, the average superheat is determined based on the instantaneous superheat within the preset sampling time;

[0050] Then, the opening coefficient is determined based on the average superheat;

[0051] Specifically, when the average superheat is less than or equal to -1, the opening coefficient is equal to 3; when the average superheat is greater than -1 and less than or equal to 0, the opening coefficient is equal to 2; when the average superheat is greater than 0, the opening coefficient is equal to 1.

[0052] Then, the opening change of the electronic expansion valve at the current time step is determined according to the opening coefficient, the average superheat and the preset target superheat, wherein the opening change = opening coefficient × (average superheat - target superheat).

[0053] Specifically, the length of the time step is equal to the sampling duration.

[0054] In addition, refer to Figure 3 As shown, the embodiment of the present application proposes a control method for a heat pump device, the heat pump device includes a water use module, a compressor, a first electric heating module and a control module, the compressor and the first electric heating module are electrically connected to the control module respectively, the compressor and the water use module are connected through a circulation pipeline, the first electric heating module is arranged on the circulation pipeline, and a first circulation water pump is arranged in the circulation pipeline, the control method includes but is not limited to the following steps S310 to S350:

[0055] Step S310, obtaining the ambient temperature and the outlet water temperature of the water outlet end of the water using module;

[0056] Step S320, when the ambient temperature is lower than the preset freezing environment threshold, and the outlet water temperature is lower than the preset freezing water temperature threshold, controlling the first circulating water pump to start;

[0057] Step S330, when the first electric heating module is in the on state, maintaining the on state of the first electric heating module, and obtaining a first operating time of the first electric heating module;

[0058] Step S340, when the first operation duration is equal to the preset first duration threshold, turning off the first electric heating module and controlling the compressor to operate;

[0059] Step S350: when the second operation time of the compressor is equal to the preset second duration threshold, the compressor is turned off and the first electric heating module is restarted.

[0060] It can be understood that in the heat pump equipment, the hot water is first heated by the first electric heating module or the compressor, and then the heated hot water is transported to the water use module through the circulation pipe; in the water use module, after the hot water completes its function, it will return to the first electric heating module or the compressor through the water outlet. The water temperature of the circulation pipe section from the water outlet of the water use module to the first electric heating module or the compressor is relatively low, which makes this section of the circulation pipe the most prone to freezing in the entire heat pump equipment; therefore, in a low temperature environment, that is, when the ambient temperature is lower than the freezing environment threshold, the first electric heating module, due to its working principle, does not rely on heat exchange with the external environment, and therefore can achieve the highest heating efficiency. On the contrary, when the outer surface of the compressor pipe is frozen due to the low ambient temperature, the formation of the ice layer will significantly reduce its heat exchange efficiency. The ice layer, as an insulating layer, hinders the effective transfer of heat, resulting in the compressor being unable to exchange heat as efficiently as under ice-free conditions. Therefore, the heating efficiency of the compressor is negatively affected, thereby affecting the performance of the entire heat pump system. When the user chooses to use the first electric heating module for heating for a first operating time equal to the first duration threshold, the heat pump equipment switches to the compressor for heating. The heat energy generated by the compressor can directly act on the pipe, which helps to quickly melt the ice layer and restore the heat exchange capacity of the pipe, thereby improving the heat exchange efficiency of the entire system, so that the ice layer on the outer surface of the compressor pipe can be removed in a timely and effective manner, reducing the risk of rupture of the pipe inside the compressor, protecting the pipe from mechanical damage, and improving the safety and stability of the heat pump equipment.

[0061] It should be noted that when the user uses the heat pump device for heating, the user can choose to heat through the first electric heating module, heat through the compressor, or heat through the first electric heating module and the compressor at the same time.

[0062] In a specific embodiment, when the ambient temperature is lower than a preset freezing environment threshold, the outlet water temperature is lower than a preset freezing water temperature threshold, and the compressor is in the on state, the compressor is kept in the on state, when the sixth operating time of the compressor is equal to the preset sixth operating time threshold, the compressor is turned off and the first electric heating module is started, and when the seventh operating time of the first electric heating module is equal to the preset seventh operating time threshold, the first electric heating module is turned off and the compressor is restarted for heating.

[0063] Exemplarily, if the user chooses to heat through the first electric heating module when starting the heat pump device, the heat pump device will be forced to switch to the compressor for heating after the first electric heating module runs for a first duration threshold, and switch back to the heat pump device for heating after the compressor heats for a second duration threshold, and then, when the first running time of the first electric heating module heating again is equal to the first duration threshold, switch to the compressor for heating again, and repeat the cycle. Similarly, if the user chooses to heat through the compressor when starting the heat pump device, the heat pump device will be forced to switch to the first electric heating module for heating after the compressor runs for a sixth duration threshold, and switch back to the heat pump device for heating after the first electric heating module heats for a seventh duration threshold, and then, when the sixth running time of the compressor heating again is equal to the sixth duration threshold, switch to the first electric heating module for heating again, and repeat the cycle.

[0064] It is understandable that during the operation of the heat pump device, no matter the user chooses to use the first electric heating module or the compressor to heat the hot water, the system will automatically switch to another module after a certain period of operation, thereby increasing the temperature of the module not in use to reduce the risk of the idle module freezing under low temperature conditions. In this way, the heat pump device can maintain its applicability and safety in a low temperature environment, ensuring the normal operation and long-term stability of the heat pump device.

[0065] Reference Figure 4 As shown, in one embodiment of the present application, the control method further includes but is not limited to the following steps S410 to S430:

[0066] Step S410, obtaining the working status of the heat pump device;

[0067] Step S420, when the working state is the shutdown state, the ambient temperature is lower than the freezing environment threshold, and the outlet water temperature is lower than the freezing water temperature threshold, the first circulating water pump is controlled to operate, and the compressor and the first electric heating module are alternately controlled to operate for a preset cycle time.

[0068] It is understandable that in a low-temperature environment, when the heat pump device is in the off state, the control module continuously obtains the outlet water temperature. When the outlet water temperature is less than the freezing water temperature threshold, the first circulating water pump is controlled to operate, that is, the water in the heat pump device is controlled to circulate between the water module, the first electric heating module and the compressor, thereby preventing the water from stagnating and freezing in a low-temperature environment; by alternately controlling the compressor and the first electric heating module to run for a preset cycle time, heat can be periodically provided to the system. This intermittent heating helps prevent ice from forming inside the pipes and equipment, while also avoiding energy waste caused by continuous operation.

[0069] In a specific embodiment, in a low temperature environment, and when the heat pump device is in a shutdown state, that is, the user does not actively turn on the heat pump device for heating, the heat pump device alternately controls the first electric heating module and the compressor to perform cyclic heating at the lowest heating power until the heat pump device is powered off or the user actively turns on the heat pump device.

[0070] In a specific implementation manner, during the time when the heat pump device is in the shutdown state, when the ambient temperature is (+2°C, +∞), the first circulating water pump is not started; when the ambient temperature is (-2°C, +2°C], the first circulating water pump first stops for 20 minutes, then runs for 10 minutes, and so on; when the ambient temperature is (-6°C, -2°C], the first circulating water pump first stops for 15 minutes, then runs for 15 minutes, and so on; when the ambient temperature is (-10°C, -6°C], the first circulating water pump first stops for 10 minutes, then runs for 20 minutes, and so on; when the ambient temperature is (-∞, -10°C], the first circulating water pump continues to run; when the ambient temperature cannot be detected normally, the first circulating water pump first stops for 15 minutes, then runs for 15 minutes, and so on.

[0071] In addition, refer to Figure 5 As shown, in one embodiment of the present application, the control method further includes but is not limited to the following steps S510 to S520:

[0072] Step S510, detecting the water flow state in the circulation pipe, and when the water flow state is normal and the compressor is in the on state, obtaining the third operation time of the compressor;

[0073] Step S520: when the third operation time is equal to the preset third duration threshold, the compressor is turned off, and the first electric heating module is controlled to operate for the preset switching time.

[0074] In a specific embodiment, before controlling the compressor for heating, it is also necessary to control the first circulating water pump to start and detect the water flow state in the circulating pipe. When the water flow state is normal and the user chooses to heat through the compressor, the compressor is kept on. When the sixth operating time of the compressor is equal to the preset sixth operating time threshold, the compressor is turned off and the first electric heating module is started. When the seventh operating time of the first electric heating module is equal to the preset seventh operating time threshold, the first electric heating module is turned off and the compressor is restarted for heating.

[0075] It should be noted that the switching duration is equal to the seventh operation duration threshold.

[0076] Specifically, if the user chooses to heat through the compressor when starting the heat pump device, after the compressor runs for the sixth duration threshold, the heat pump device will be forced to switch to the first electric heating module for heating, and after the first electric heating module heats for the seventh duration threshold, it will switch back to the heat pump device for heating, and then, when the sixth running time of the compressor heating again is equal to the sixth duration threshold, it will switch to the first electric heating module for heating again, and this cycle will be repeated.

[0077] In a specific implementation, the control module also controls the working state of the first circulating water pump and the compressor by the ambient temperature. During the duration of the compressor operation heating, when the ambient temperature is (+2°C, +∞), the first circulating water pump does not start; when the ambient temperature is (-2°C, +2°C], the first circulating water pump first stops for 20 minutes, and then runs for 10 minutes, and so on; when the ambient temperature is (-6°C, -2°C], the first circulating water pump first stops for 15 minutes, and then runs for 15 minutes, and so on; when the ambient temperature is (-10°C, -6°C], the first circulating water pump first stops for 10 minutes, and then runs for 20 minutes, and so on; when the ambient temperature is (-∞, -10°C], the first circulating water pump continues to run; when the ambient temperature cannot be detected normally, the first circulating water pump first stops for 15 minutes, and then runs for 15 minutes, and so on.

[0078] In addition, in one embodiment of the present application, the heat pump system further comprises a water tank, a second electric heating module is arranged in the water tank, the circulation pipeline comprises a first pipeline and a second pipeline, the water tank is connected to the water module through the first pipeline, the water tank is connected to the compressor through the second pipeline, the first circulation water pump is arranged on the first pipeline, the second circulation water pump is arranged on the second pipeline, the first heating module is arranged on the second pipeline, Figure 6 As shown, the control method also includes but is not limited to the following steps S610 to S630:

[0079] Step S610, when the water flow state of the first pipeline is normal and the water flow state of the second pipeline is abnormal, the compressor is stopped, the first circulating water pump is started, the second circulating water pump is turned off, and the second electric heating module is controlled to continue to operate;

[0080] Step S620, obtaining the duration of the fault, and when the duration of the fault is equal to the preset adjustment duration threshold, controlling the second circulating water pump to start, and obtaining the water flow state of the second pipeline again;

[0081] Step S630: When the water flow state of the second pipeline is abnormal, the second circulating water pump is turned off again.

[0082] In a specific embodiment, in the heat pump device, the first heating module and the compressor are both placed on the second pipe connected to the water tank. In order to ensure the safe operation of the heat pump device, when the second pipe is detected to be frozen, blocked or broken, the heat pump device will automatically shut down the first heating module and the compressor, which can prevent the local area of ​​the second pipe from overheating due to the continued heating of the heating module and the compressor, thereby avoiding the adverse effects that may be caused to the safety of the heat pump device and ensuring the stability and safety of the entire system; in addition, when the heat pump device detects that the water flow state in the second pipe is abnormal, the system will automatically try to start the second circulating water pump to restore the normal water flow. If the water flow state of the second pipe is improved and restored to normal after starting the second circulating water pump, the system will restart the first electric heating module and the compressor to continue the heating process of the heat pump device; however, if the water flow state of the second pipe is still abnormal after trying to start the second circulating water pump, the system will shut down the second circulating water pump again, thereby preventing the potential damage to the second pipe, the first electric heating module and the compressor caused by the abnormal water flow. Therefore, the heat pump device can maintain the stability and reliability of its operation while ensuring the safety of the equipment.

[0083] In addition, refer to Figure 7 As shown, in one embodiment of the present application, the control method further includes but is not limited to the following steps S710 to S720:

[0084] Step S710, obtaining the number of abnormality determinations in which the water flow state of the second pipeline is detected to be abnormal;

[0085] Step S720: when the number of abnormality judgments is equal to a preset number threshold within a preset judgment period, the compressor is disabled.

[0086] It is understandable that during the operation of the heat pump device, once an abnormality in the water flow state in the second pipe is detected, the heat pump device attempts to restore the normal water flow in the second pipe by restarting the second circulating water pump. After each attempt to restart the second circulating water pump, the heat pump device will check the water flow state of the second pipe. If the water flow state is still abnormal, the system will record the number of abnormal judgments. When the number of abnormal judgments reaches the preset threshold, the system will stop trying to restart the second circulating water pump and disable the compressor, thereby preventing damage to the second pipe and compressor that may be caused by continued water flow abnormalities. Through this preventive control strategy, the heat pump device can avoid further potential failures and damage while ensuring the safety of the equipment.

[0087] In a specific embodiment, when the heat pump device detects that the number of abnormal judgments reaches a preset number threshold, in order to prevent freezing and icing caused by low temperature from damaging the area where the first electric heating module is located, the system will automatically perform a cyclic start-up and shutdown operation of the first electric heating module. The temperature of the area is maintained by periodic heating to prevent the occurrence of icing, thereby protecting the first electric heating module from damage.

[0088] In addition, refer to Figure 8 As shown, in one embodiment of the present application, the control method further includes but is not limited to the following steps S710 to S830:

[0089] Step S810, when the water flow state of the second pipeline is normal, turn off the second circulating water pump, control the compressor to operate, and record the fourth operating time;

[0090] Step S820, when the fourth operation duration is equal to the preset third duration threshold, the compressor is turned off, the second circulating water pump is controlled to operate, and the fifth operation duration is recorded;

[0091] Step S830: When the fifth operation duration is equal to the preset fourth duration threshold, the second circulating water pump is turned off again and the compressor is controlled to operate.

[0092] It is understandable that in the heat pump device, when the water flow state in the second pipe is normal, the heat pump device first turns off the second circulating water pump and starts the compressor for independent operation. Thereby, the compressor and the area where it is located are fully supplied with heat to slow down the formation of the ice layer. When the fourth operating time of the compressor running independently reaches the set third duration threshold for a long time, the heat pump device will turn off the compressor and restart the second circulating water pump to promote the circulation of water in the second pipe. By controlling the start of the second circulating water pump, it can not only prevent the area where the compressor is located from overheating due to continuous heating and reduce the energy consumption of the compressor, but also the operation of the second circulating water pump can promote the hot water heated by the compressor to circulate in the second pipe, which not only helps to increase the temperature of other areas of the second pipe, but also effectively prevents the entire second pipe from freezing, thereby ensuring the reliability and safety of the heat pump device in a low temperature environment.

[0093] In a specific implementation, when the water flow state of the second pipeline is normal, the working state of the heat pump device cycles through the following four stages:

[0094] In the first stage, the compressor and the first electric heating module are turned off, and the second circulating water pump is started;

[0095] In the second stage, the second circulating water pump and the first electric heating module are turned off, and the compressor is started for heating;

[0096] In the third stage, the compressor and the first electric heating module are turned off, and the second circulating water pump is started;

[0097] In the fourth stage, the compressor and the second circulating water pump are turned off, and the first electric heating module is started for heating.

[0098] In addition, refer to Fig. 9 As shown, in one embodiment of the present application, the control method further includes the following steps S910:

[0099] Step S910, when the outlet water temperature is equal to a preset high temperature threshold, the first electric heating module and the compressor are turned off, and the first circulating water pump is controlled to operate.

[0100] In a specific embodiment, during the continuous operation of the first circulating water pump, when the outlet water temperature is equal to a preset low temperature threshold, the second circulating water pump is temporarily stopped and the compressor and the first electric heating module are controlled to perform heating.

[0101] In addition, refer to Fig.10 As shown, the present application also proposes a control device 1000 for a heat pump device, the control device 1000 comprising:

[0102] The temperature detection module 1001 is used to obtain the ambient temperature and the outlet water temperature of the water outlet end of the water use module;

[0103] The first control module 1002 is used to control the circulation water pump to start when the ambient temperature is lower than a preset freezing environment threshold and the outlet water temperature is lower than a preset freezing water temperature threshold;

[0104] The timing module 1003 is used to keep the first electric heating module powered on when the first electric heating module is powered on, and obtain the first operating time of the first electric heating module;

[0105] The second regulating module 1004 is used to turn off the first electric heating module and control the operation of the compressor when the first operation duration is equal to a preset first duration threshold;

[0106] The third regulating module 1005 is configured to shut down the compressor and restart the first electric heating module when the second operating time of the compressor is equal to a preset second duration threshold.

[0107] It can be understood that since the control device 1000 of the heat pump equipment in this embodiment is used to execute the control method of the heat pump equipment mentioned in the above specific embodiment, the control device 1000 of the heat pump equipment in this embodiment has the beneficial effects brought by the control method of the heat pump equipment mentioned in the above specific embodiment.

[0108] In addition, refer to Fig.11 , Fig.11: is an optional hardware structure diagram of an electronic device provided in an embodiment of the present application, the electronic device includes:

[0109] The processor 1101 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0110] The memory 1102 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1102 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 1102, and the processor 1101 calls and executes the control method of the heat pump device in the embodiment of the present application, for example, executing the above-described Figure 3 Steps S310 to S350 of the method, Figure 4 Steps S410 to S420 of the method, Figure 5 Steps S510 to S520 of the method, Figure 6 Steps S610 to S630 of the method, Figure 7 Steps S710 to S720 of the method, Figure 8 Steps S810 to S830 of the method, Fig. 9 Steps S310 to S910 of the method;

[0111] Input / output interface 1103, used to implement information input and output;

[0112] The communication interface 1104 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0113] A bus 1105 that transmits information between various components of the device (e.g., the processor 1101, the memory 1102, the input / output interface 1103, and the communication interface 1104);

[0114] The processor 1101 , the memory 1102 , the input / output interface 1103 and the communication interface 1104 are connected to each other in communication within the device via the bus 1105 .

[0115] The present application also provides a storage medium, which is a computer-readable storage medium for computer-readable storage. The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the control method of the heat pump device described above. For example, Figure 3 Steps S310 to S350 of the method, Figure 4 Steps S410 to S420 of the method, Figure 5 Steps S510 to S520 of the method, Figure 6 Steps S610 to S630 of the method, Figure 7 Steps S710 to S720 of the method, Figure 8 Steps S810 to S830 of the method, Fig. 9 Method steps S310 to S910.

[0116] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0117] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0118] It can be understood by those skilled in the art that Figures 3 to 9 The technical solutions shown in the figure do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than those shown in the figure, or a combination of certain steps, or different steps.

[0119] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0120] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0121] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0122] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0123] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0124] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0125] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0126] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0127] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A control method for a heat pump device, characterized in that: The heat pump device includes a water use module, a compressor, a first electric heating module and a control module, the compressor and the first electric heating module are electrically connected to the control module respectively, the compressor is connected to the water use module through a circulation pipeline, the first electric heating module is arranged on the circulation pipeline, and a first circulation water pump is arranged in the circulation pipeline, and the control method includes: Acquiring the ambient temperature and the outlet water temperature of the water outlet end of the water use module; When the ambient temperature is lower than a preset freezing environment threshold, and the outlet water temperature is lower than a preset freezing water temperature threshold, controlling the first circulating water pump to start; When the first electric heating module is in a powered-on state, maintaining the powered-on state of the first electric heating module, and obtaining a first operating time of the first electric heating module; When the first operation duration is equal to a preset first duration threshold, turning off the first electric heating module and controlling the compressor to operate; When the second operation time of the compressor is equal to a preset second duration threshold, the compressor is turned off and the first electric heating module is restarted.

2. The control method according to claim 1, characterized in that: The control method further comprises: Obtaining the working status of the heat pump device; When the working state is the shutdown state, the ambient temperature is lower than the freezing environment threshold, and the outlet water temperature is lower than the freezing water temperature threshold, the first circulating water pump is controlled to operate, and the compressor and the first electric heating module are alternately controlled to operate for a preset cycle time.

3. The control method according to claim 1, characterized in that: The control method further comprises: detecting a water flow state in the circulation pipe, and when the water flow state is normal and the compressor is in a startup state, obtaining a third operation time of the compressor; When the third operating time is equal to a preset third duration threshold, the compressor is turned off, and the first electric heating module is controlled to operate for a preset switching time.

4. The control method according to claim 3, characterized in that: The heat pump system further includes a water tank, a second electric heating module is arranged in the water tank, the circulation pipeline includes a first pipeline and a second pipeline, the water tank is connected to the water module through the first pipeline, the water tank is connected to the compressor through the second pipeline, the first circulation water pump is arranged on the first pipeline, the second circulation water pump is arranged on the second pipeline, the first heating module is arranged on the second pipeline, and the control method further includes: When the water flow state of the first pipeline is normal and the water flow state of the second pipeline is abnormal, the compressor is stopped, the first circulating water pump is started, the second circulating water pump is turned off, and the second electric heating module is controlled to continue to operate; Acquire the duration of the fault, and when the duration of the fault is equal to a preset adjustment duration threshold, control the second circulating water pump to start, and acquire the water flow state of the second pipeline again; When the water flow state of the second pipeline is abnormal, the second circulating water pump is turned off again.

5. The control method according to claim 4, characterized in that: The control method further comprises: Obtaining the number of abnormality determinations in which the water flow state of the second pipeline is detected to be abnormal; When the number of abnormality judgments is equal to a preset number threshold within a preset judgment period, the compressor is disabled.

6. The control method according to claim 4, characterized in that: The control method further comprises: When the water flow state of the second pipeline is normal, turning off the second circulating water pump, controlling the compressor to operate, and recording the fourth operating time; When the fourth operation duration is equal to the preset third duration threshold, the compressor is turned off, the second circulating water pump is controlled to operate, and the fifth operation duration is recorded; When the fifth operation duration is equal to a preset fourth duration threshold, the second circulating water pump is turned off again and the compressor is controlled to operate.

7. The control method according to claim 1, characterized in that: The control method further comprises: When the outlet water temperature is equal to a preset high temperature threshold, the first electric heating module and the compressor are turned off, and the first circulating water pump is controlled to operate.

8. A control device for a heat pump device, characterized in that: The heat pump device includes a water use module, a compressor, a first electric heating module and a control module, wherein the compressor and the first electric heating module are electrically connected to the control module respectively, the compressor is connected to the water use module through a circulation pipeline, a first circulation water pump is arranged in the circulation pipeline, and the control device includes: A temperature detection module, used to obtain the ambient temperature and the outlet water temperature of the water outlet end of the water use module; A first control module, used for controlling the circulation water pump to start when the ambient temperature is lower than a preset freezing environment threshold and the outlet water temperature is lower than a preset freezing water temperature threshold; a timing module, used for maintaining the first electric heating module in the powered-on state and obtaining a first operating time of the first electric heating module when the first electric heating module is in the powered-on state; a second regulating module, configured to turn off the first electric heating module and control the operation of the compressor when the first operation duration is equal to a preset first duration threshold; The third regulating module is used to shut down the compressor and restart the first electric heating module when the second operating time of the compressor is equal to a preset second duration threshold.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the control method of the heat pump device according to any one of claims 1 to 7 when executing the computer program.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the control method of the heat pump device according to any one of claims 1 to 7 is implemented.

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