Water heating system coupling air energy heat pump and solar energy, and control method therefor

Abstract

A water heating system coupling an air energy heat pump and solar energy, and a control method therefor. The method comprises: obtaining first water temperature data (T1) of a heat preservation water tank corresponding to an air energy heat pump unit, second water temperature data (T2) of a solar collector water heater, and water supply pressure data (P) on a user side; on the basis of the water supply pressure data (P) on the user side, determining whether a water valve on the user side is currently turned on, and on the basis of the determination result, the first water temperature data (T1), the second water temperature data (T2), and the difference between the first water temperature data (T1) and the second water temperature data (T2), determining a control signal used to select a corresponding thermal energy coupling water supply mode for the air energy heat pump unit and the solar collector water heater; and on the basis of the control signal, executing the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar collector water heater.

Description

Air energy heat pump and solar energy coupled hot water system and control method thereof

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311014376.3, filed on August 11, 2023, entitled “An air-source heat pump and solar energy coupled hot water system and its control method,” the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the technical field of design of combined solar and air energy heating solutions, and in particular to an air energy heat pump and solar energy coupled hot water system and a control method thereof. Background Art

[0004] Against the backdrop of the dual carbon goals, building energy conservation has become particularly important. Hot water, an indispensable part of people's lives, has high demand and long peak usage periods, resulting in significant energy consumption. Energy-saving control of hot water systems is crucial for energy conservation and emission reduction.

[0005] In the existing solar energy and air energy combined heating system, the solar heat source usually adopts a temperature difference control cycle, and the hot water in the solar collector that is close to the required temperature is not fully utilized, which wastes a certain amount of energy. The system operation efficiency is relatively low, and the linkage heating effect of the air energy heat pump and the solar water collector is poor.

[0006] Therefore, the existing technology needs to be further developed.

[0007] Summary of the Invention

[0008] The purpose of this application is to overcome the above-mentioned technical deficiencies and provide an air-to-energy heat pump and solar-energy coupled hot water system and its control method, so as to solve the problems in the prior art that the hot water in the solar collector close to the required temperature is not fully utilized, a certain amount of energy is wasted, the system operation is relatively inefficient, and the linkage heating effect of the air-to-energy heat pump and the solar water collector is poor.

[0009] The present application provides a control method for an air-energy heat pump and solar-energy coupled water heating system, the method comprising:

[0010] Obtaining first water temperature data of the insulation water tank corresponding to the air energy heat pump unit, second water temperature data of the solar water heater, and water supply pressure data on the user side;

[0011] Determine whether the water valve on the current user side is open according to the water supply pressure data on the user side, and determine the control signal for selecting the corresponding thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector according to the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data;

[0012] According to the control signal, the thermal energy coupling water supply mode of the selected air energy heat pump unit and solar water collector is executed.

[0013] In some embodiments, the method further includes: determining whether the water supply pressure data on the user side is less than or equal to a first preset threshold; if so, determining that the water valve on the user side is open; if not, determining that the water valve on the user side is not open.

[0014] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater is determined based on the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data, including: if the judgment result is that the water valve is not opened on the user side, determine whether the difference between the second water temperature data and the first water temperature data is greater than or equal to the second preset threshold, and determine whether the first water temperature data is less than or equal to the third preset threshold, and determine the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater based on the judgment result.

[0015] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and solar water collector is determined based on the judgment result, including: if the difference between the second water temperature data and the first water temperature data is greater than or equal to the second preset threshold and the first water temperature data is less than or equal to the third preset threshold, determining the control signal for selecting the first thermal energy coupling water supply mode; the execution of the selected thermal energy coupling water supply mode of the air-to-energy heat pump unit and solar water collector based on the control signal includes: controlling the thermal energy coupling between the solar water collector and the insulated water tank, and controlling the water circulation between the solar water collector and the insulated water tank.

[0016] In some embodiments, a control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on the judgment result, including: if the difference between the second water temperature data and the first water temperature data is less than the second preset threshold, judging whether the difference between the second water temperature data and the first water temperature data is less than or equal to the fourth preset threshold, and determining the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector based on the judgment result.

[0017] In some embodiments, a control signal for selecting a thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on a judgment result, including: if the difference between the second water temperature data and the first water temperature data is less than or equal to a fourth preset threshold, or the first water temperature data is greater than a third preset threshold, a control signal for selecting the second thermal energy coupling water supply mode is determined; the execution of the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector based on the control signal includes: controlling the solar water collector and the insulated water tank to stop thermal energy coupling, and controlling the solar water collector and the insulated water tank to stop water circulation.

[0018] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater is determined based on the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data, including: if the judgment result is that the water valve is not opened on the user side, determine whether the second water temperature data is less than or equal to the thirteenth preset threshold, and determine whether the first water temperature data is greater than or equal to the fourteenth preset threshold, and determine the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater based on the judgment result.

[0019] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-source heat pump unit and solar water collector is determined based on the judgment result, including: if the second water temperature data is less than or equal to the thirteenth preset threshold, and the first water temperature data is greater than or equal to the fourteenth preset threshold, determining the control signal for selecting the first thermal energy coupling water supply mode; according to the control signal, executing the selected thermal energy coupling water supply mode of the air-source heat pump unit and solar water collector, including controlling the thermal energy coupling between the solar water collector and the insulated water tank.

[0020] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-energy heat pump unit and solar water collector is determined based on the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data: if the judgment result is that the water valve is not opened on the user side, if the second water temperature data is greater than the thirteenth preset threshold, determine whether the second water temperature data is greater than or equal to the fifteenth preset threshold; if the second water temperature data is greater than or equal to the fifteenth preset threshold, or the second water temperature data is less than the first water temperature data, determine to select the control signal of the second thermal energy coupling water supply mode; according to the control signal, execute the selected thermal energy coupling water supply mode of the air-energy heat pump unit and solar water collector, including: controlling the solar water collector and the insulated water tank to stop thermal energy coupling.

[0021] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-source heat pump unit and solar water heater is determined based on the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data, including: if the judgment result is that the water valve is opened on the user side, it is determined whether the second water temperature data is within the first preset temperature range, and the control signal for selecting the thermal energy coupling water supply mode of the air-source heat pump unit and solar water heater is determined based on the judgment result.

[0022] In some embodiments, a control signal for selecting a thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on the judgment result, including: if the second water temperature data is within the first preset temperature range, a control signal for selecting a third thermal energy coupling linkage water supply mode is determined, and the third thermal energy coupling linkage water supply mode is a solar water supply mode; according to the control signal, executing the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector includes: controlling the solar water collector to supply water to the user side, controlling the first electric butterfly valve and the second electric butterfly valve to open at the same time, and controlling the third electric butterfly valve and the fifth electric butterfly valve to close at the same time, to realize the third thermal energy coupling linkage water supply mode; controlling the solar water collector to supply water to the user side.

[0023] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on the judgment result, including: if the second water temperature data is not within the first preset temperature range, the control signal for determining the selection of the fourth thermal energy coupling linkage water supply mode is controlled, and the fourth thermal energy coupling linkage water supply mode is to supply water to the user side through the insulated water tank; according to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is executed, including: controlling the fifth electric butterfly valve to open, and controlling the first electric butterfly valve and the second electric butterfly valve to close at the same time, realizing the fourth thermal energy coupling linkage water supply mode, and controlling the insulated water tank to supply water to the user side.

[0024] In some embodiments, before executing the thermal energy coupling water supply mode of the selected air-to-energy heat pump unit and the solar water heater according to the control signal, the method also includes: obtaining the current date data, the current time data and the liquid level data in the insulated water tank, obtaining the current season data according to the current date data, judging whether the current season data is winter, and determining whether to control the air-to-energy heat pump unit to start the direct heating mode according to the judgment result and the liquid level data and the current time data in the insulated water tank.

[0025] In some embodiments, based on the judgment result and the liquid level data and current time data in the insulation box, determining whether to control the air-source heat pump unit to start the direct heating mode control signal includes: if the judgment result is that the current season is winter, judging whether the liquid level data is less than or equal to the fifth preset threshold, and determining whether to control the air-source heat pump unit to start the direct heating mode control signal based on the judgment.

[0026] In some embodiments, determining whether to control the air-source heat pump unit to start the direct heating mode based on the control signal includes: if the liquid level data is less than or equal to the fifth preset threshold, determining the control signal to control the air-source heat pump unit to start the direct heating mode.

[0027] In some embodiments, determining whether to control the air-to-energy heat pump unit to start the direct heating mode based on the control signal includes: if the liquid level data is greater than the fifth preset threshold, determining whether the liquid level data is greater than or equal to the sixth preset threshold; if so, determining the control signal to control the air-to-energy heat pump unit to turn off the direct heating mode.

[0028] In some embodiments, based on the judgment result and the liquid level data and current time data in the insulation box, determining whether to control the air-source heat pump unit to start the direct heating mode includes: if the judgment result is that the current season is not winter, judging whether the current time data is within the second preset time interval; if so, judging whether the liquid level data is less than or equal to the fifth preset threshold, and determining whether to control the air-source heat pump unit to start the direct heating mode based on the judgment result.

[0029] In some embodiments, determining whether to control the air-source heat pump unit to start the direct heating mode control signal based on the judgment result includes: if the liquid level data is less than or equal to the fifth preset threshold, controlling the control signal to control the air-source heat pump unit to start the direct heating mode.

[0030] In some embodiments, the control signal for controlling the air-source heat pump unit to start the direct heating mode is determined based on the judgment result, including: if the liquid level data is greater than the fifth preset threshold, determining whether the liquid level data is greater than or equal to the sixth preset threshold, and if so, determining the control signal for controlling the air-source heat pump unit to turn off the direct heating mode.

[0031] In some embodiments, if the current time data is not within the second preset time interval, it is determined whether the liquid level data is less than or equal to the seventh preset threshold. If so, the control determines a control signal to control the air energy heat pump unit to start the direct heating mode.

[0032] In some embodiments, if the liquid level data is greater than the seventh preset threshold, it is determined whether the liquid level data is greater than or equal to the eighth preset threshold. If so, a control signal is determined to control the air energy heat pump unit to turn off the direct heating mode.

[0033] In some embodiments, the method also includes: determining whether the first water temperature data is less than or equal to a ninth preset threshold value; if so, determining a control signal to control the air energy heat pump unit to start the circulation pump, and controlling the air energy heat pump unit and the insulated water tank to heat the circulating water.

[0034] In some embodiments, the method further includes: if the first water temperature data is greater than a ninth preset threshold, determining a control signal to shut down the circulating pump of the air energy heat pump unit, and controlling the air energy heat pump unit and the insulated water tank to stop circulating water heating.

[0035] In some embodiments, the method also includes: controlling and judging whether the first water temperature data is greater than or equal to the eleventh preset threshold value, and judging whether the liquid level data is less than or equal to the sixth preset threshold value, and determining the control signal for controlling the opening or closing of the tap water replenishment solenoid valve according to the judgment result, and replenishing the tap water of the air-to-energy heat pump and solar-energy coupled hot water system or stopping the tap water replenishment of the air-to-energy heat pump and solar-energy coupled hot water system.

[0036] In some embodiments, the method also includes: if the first water temperature data is less than the eleventh preset threshold and the liquid level data is greater than the sixth preset threshold, the control determines the control signal to close the tap water replenishment solenoid valve, and stops the tap water replenishment of the air-to-energy heat pump and the solar-energy coupled hot water system; if the first water temperature data is greater than or equal to the eleventh preset threshold and the liquid level data is less than the sixth preset threshold, the control determines the control signal to open the tap water replenishment solenoid valve, and performs tap water replenishment of the air-to-energy heat pump and the solar-energy coupled hot water system.

[0037] In some embodiments, the method further includes: if it is determined that the water valve on the current user side is open, determining the control signal to control the water supply pump on the user side to start, and supplying water to the user end; if it is determined that the water valve on the current user side is not open, determining the control signal to control the water supply pump on the user side to stop, and stopping water supply to the user end.

[0038] This application also provides an air-to-energy heat pump and solar-powered water heating system, comprising an air-to-energy heat pump unit, an insulated water tank, a solar water heater, and a control device. The air-to-energy heat pump unit and the solar water heater are each connected to the insulated water tank via a pipeline. The control device comprises an acquisition module, a determination module, and an execution module.

[0039] The acquisition module is used to obtain the first water temperature data of the insulated water tank corresponding to the air energy heat pump unit, the second water temperature data of the solar water heater and the water supply pressure data on the user side.

[0040] A determination module is used to determine whether the water valve on the current user side is opened based on the water supply pressure data on the user side, and to determine the control signal for selecting the corresponding thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector based on the judgment result and the first water temperature data, the second water temperature data, and the difference between the second water temperature data and the first water temperature data.

[0041] The execution module is used to execute the selected heat energy coupling water supply mode of the air energy heat pump unit and the solar water collector according to the control signal.

[0042] In some embodiments, the system also includes: a solar circulation pump; the insulated water tank is provided with a first water outlet and a first water inlet, the solar circulation pump is arranged between the first water outlet of the insulated water tank and the water inlet of the solar water collector, and a water circulation loop is formed through a pipeline between the first water outlet of the insulated water tank, the solar water collector and the first water inlet of the insulated water tank. When the solar circulation pump is turned on, the insulated water tank and the solar water collector are thermally coupled.

[0043] In some embodiments, the system also includes: an air-energy heat pump unit circulation pump; the insulated water tank is provided with a second water inlet and a second water outlet, the second water outlet of the insulated water tank, the air-energy heat pump unit and the second water inlet of the insulated water tank form a water circulation loop through a pipeline, and the air-energy heat pump unit circulation pump is arranged between the second water outlet of the insulated water tank and the air-energy heat pump unit. When the air-energy heat pump unit circulation pump is turned on, the air-energy heat pump unit and the insulated water tank carry out circulating water heating.

[0044] In some embodiments, the system further includes: a first electric butterfly valve and a second electric butterfly valve, wherein the first electric butterfly valve is arranged between the water outlet of the solar water collector and the water supply port on the user side, and the second electric butterfly valve is arranged between the tap water inlet and the water inlet of the solar water collector.

[0045] In some embodiments, the system also includes: a third electric butterfly valve, a fourth electric butterfly valve and a fifth electric butterfly valve; the insulated water tank is provided with a third water inlet and a third water outlet; the third electric butterfly valve is arranged between the water outlet of the solar water collector and the first water inlet of the insulated water tank, the fourth electric butterfly valve is arranged between the tap water inlet and the third water inlet of the insulated water tank, and the fifth electric butterfly valve is arranged between the third water outlet of the insulated water tank and the user-side water supply port; when the fifth electric butterfly valve is opened and the first electric butterfly valve and the second electric butterfly valve are closed at the same time, the fourth thermal energy coupling linkage water supply mode is realized.

[0046] In some embodiments, the system also includes: a first temperature sensor, arranged in the insulated water tank, for collecting first water temperature data of the insulated water tank and sending it to the determination module; a second temperature sensor, arranged in the solar water heater, for collecting second water temperature data of the solar water heater and sending it to the control module.

[0047] In some embodiments, the system further includes: a user-side pressure sensor and a user-side water supply pump, wherein the user-side pressure sensor and the user-side water supply pump are arranged at the user-side water supply port, and are used to detect the water supply pressure data on the user side and send it to the control module, and the user-side water supply pump is used to supply water to the user end when the user opens the water valve.

[0048] This application organically combines air-to-energy heat pump units with solar water heaters, implementing intelligent linkage control to fully leverage the energy-saving advantages of solar energy and the reliability of air-to-energy heat pump units. This application upgrades the solar system structure and optimizes the segmented control strategy of the solar system, adding a direct water supply pipeline for solar water heaters. Through segmented solar control, direct water supply to the solar water heaters and circulating heat with the insulated water tank are achieved, prioritizing the full utilization of solar energy as a clean heat source and reducing the use of air-to-energy heat pump units. Through intelligent linkage control of air-to-energy heat pumps and solar water heaters, an efficient hot water system solution is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a flow chart of a control method for an air-energy heat pump and solar-energy coupled water heating system according to an embodiment of the present application;

[0050] FIG2 is a schematic structural diagram of a control device for an air-energy heat pump and solar-energy coupled water heating system provided in one embodiment of the present application;

[0051] FIG3 is a schematic structural diagram of an air-energy heat pump and solar-energy coupled water heating system provided in one embodiment of the present application. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution of the present application, the following is a clear and complete description of the technical solution of the present application in conjunction with the drawings of the present application. Based on the embodiments in the present application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the drawings. Therefore, the directional terms used are used to illustrate rather than limit the invention of the present application.

[0053] The present application will be further described below with reference to the accompanying drawings and preferred embodiments.

[0054] FIG1 is a flow chart of a control method for an air-to-energy heat pump and solar-energy coupled water heating system according to an embodiment of the present application. FIG3 is a schematic structural diagram of an air-to-energy heat pump and solar-energy coupled water heating system according to an embodiment of the present application. Referring to FIG1 and FIG3 , an embodiment of the present application provides a control method for an air-to-energy heat pump and solar-energy coupled water heating system. The control method is performed by a control device, which typically includes a processor capable of data processing. The specific type of processor is not limited in this application. The control method for an air-to-energy heat pump and solar-energy coupled water heating system includes steps S100 to S300.

[0055] S100, obtaining first water temperature data T1 of the insulated water tank corresponding to the air energy heat pump unit, second water temperature data T2 of the solar water heater, and water supply pressure data P on the user side.

[0056] It should be noted here that before step S100, it includes: presetting a first preset threshold value, which can be specifically set according to the water supply pressure data on the user side when the water valve is not opened on the on-site user side. The first preset threshold value Th1 is preferably 100KPA. The first preset threshold value is preferably 100KPA, which is obtained by the technical personnel of this application through a large number of experiments.

[0057] A second preset threshold value Th2 is preset, and the second preset threshold value Th2 is preferably 6 degrees Celsius.

[0058] A third preset threshold value Th3 is preset, and the third preset threshold value Th3 is preferably 55 degrees Celsius.

[0059] A fourth preset threshold value Th4 is preset, and the fourth preset threshold value Th4 is preferably 2 degrees Celsius.

[0060] A fifth preset threshold value Th5, a sixth preset threshold value Th6, a seventh preset threshold value Th7, and an eighth preset threshold value Th8 are preset. The sixth preset threshold value Th6, the fifth preset threshold value Th5, the eighth preset threshold value Th8, and the seventh preset threshold value Th7 represent four liquid levels in the thermal insulation water tank, from high to low. The sixth preset threshold value Th6 is greater than the fifth preset threshold value Th5, the fifth preset threshold value Th5 is greater than the eighth preset threshold value Th8, and the eighth preset threshold value Th8 is greater than the seventh preset threshold value Th7.

[0061] A ninth preset threshold value Th9 is preset, and the ninth preset threshold value Th9 is preferably 42 degrees Celsius.

[0062] A tenth preset threshold value Th10 is preset, and the tenth preset threshold value Th10 is preferably 46 degrees Celsius.

[0063] An eleventh preset threshold value is preset, and the eleventh preset threshold value Th11 is preferably 47 degrees Celsius.

[0064] A twelfth preset threshold value is preset, and the twelfth preset threshold value Th12 is preferably 43 degrees Celsius.

[0065] A thirteenth preset threshold value is preset, and the thirteenth preset threshold value Th13 is preferably 4 degrees Celsius.

[0066] A fourteenth preset threshold value is preset, and the fourteenth preset threshold value Th14 is preferably 15 degrees Celsius.

[0067] A fifteenth preset threshold value is preset, and the fifteenth preset threshold value Th15 is preferably 8 degrees Celsius.

[0068] The first temperature interval is preset, and the first preset temperature interval Te1 is preferably [42, 55].

[0069] The second preset time interval is preset, and the second preset time interval Ti2 is preferably [14:00, 22:00].

[0070] It can be understood that the preferred values ​​of the above-mentioned preset thresholds are obtained by the technical personnel of this application through a large number of experiments, which can better realize the organic combination and intelligent linkage control of the air energy heat pump unit and the solar water heater.

[0071] S200. Determine whether the water valve on the current user side is open based on the water supply pressure data on the user side, and determine the control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and solar water collector based on the judgment result and the first water temperature data T1, the second water temperature data T2, and the difference between the second water temperature data T2 and the first water temperature data T1.

[0072] In some embodiments, determining whether the water valve on the current user side is open based on the water supply pressure data on the user side includes: determining whether the water supply pressure P data on the user side is less than or equal to the first preset threshold Th1; if so, determining that the water valve on the user side is open; if not, determining that the water valve on the user side is not open.

[0073] S300: Execute the selected heat energy coupling water supply mode of the air energy heat pump unit and the solar water heater according to the control signal.

[0074] In some embodiments, step S200 determines the control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and the solar water collector based on the judgment result and the first water temperature data T1, the second water temperature data T2, and the difference between the second water temperature data T2 and the first water temperature data T1, including: if the judgment result is that the water use valve is not opened on the user side, determine whether the difference between the second water temperature data T2 and the first water temperature data T1 is greater than or equal to the second preset threshold Th2, and determine whether the first water temperature data T1 is less than or equal to the third preset threshold Th3, and determine the control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and the solar water collector based on the judgment result.

[0075] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-source heat pump unit and solar water collector is determined based on the judgment result, including: if the difference between the second water temperature data T2 and the first water temperature data T1 is greater than or equal to the second preset threshold Th2 and the first water temperature data T1 is less than or equal to the third preset threshold Th3, the control signal for selecting the first thermal energy coupling water supply mode is determined.

[0076] Correspondingly, the thermal energy coupling water supply mode of the selected air energy heat pump unit and solar water heater is executed according to the control signal, including: controlling the thermal energy coupling between the solar water heater and the insulated water tank, and the thermal energy coupling method is to control the water circulation between the solar water heater and the insulated water tank.

[0077] It should be noted here that if the difference between the second water temperature data T2 and the first water temperature data T1 is greater than or equal to the second preset threshold value Th2 and the first water temperature data T1 is less than or equal to the third preset threshold value Th3, it proves that at this time, the temperature of the hot water in the solar water collector is higher and the temperature of the hot water in the insulated water tank is lower. At this time, by controlling the thermal energy coupling between the solar water collector and the insulated water tank, the solar energy clean heat source can be fully utilized, the use of the air thermal energy pump unit can be reduced, and energy can be saved, which greatly improves the intelligence level of this application and greatly expands the application scenarios of this application.

[0078] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water collector is determined based on the judgment result, including: if the difference between the second water temperature data T2 and the first water temperature data T1 is less than the second preset threshold value Th2, judging whether the difference between the second water temperature data T2 and the first water temperature data T1 is less than or equal to the fourth preset threshold value Th4, and determining the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water collector based on the judgment result.

[0079] Specifically, the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined according to the judgment result, including: if the difference between the second water temperature data T2 and the first water temperature data T1 is less than or equal to the fourth preset threshold value Th4, or the first water temperature data T1 is greater than the third preset threshold value Th3, the control signal for selecting the second thermal energy coupling water supply mode is determined.

[0080] Correspondingly, the thermal energy coupling water supply mode of the selected air energy heat pump unit and solar water heater is executed according to the control signal, including: controlling the thermal energy coupling between the solar water heater and the insulated water tank to stop the thermal energy coupling, and the method of stopping the thermal energy coupling is to control the water circulation between the solar water heater and the insulated water tank.

[0081] It should be noted here that if the difference between the second water temperature data T2 and the first water temperature data T1 is less than or equal to the fourth preset threshold value Th4, or the first water temperature data T1 is greater than the third preset threshold value Th3, at this time, it proves that the temperature of the hot water in the solar water heater is lower or the temperature of the hot water in the insulated water tank is higher, and there is no need to perform thermal energy coupling between the solar water heater and the insulated water tank, which further improves the intelligence level of this application.

[0082] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on the judgment result, including: judging whether the second water temperature data T2 is less than or equal to the thirteenth preset threshold value Th13, and judging whether the first water temperature data T1 is greater than or equal to the fourteenth preset threshold value Th14, and determining the control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and the solar water collector based on the judgment result.

[0083] Specifically, determining a control signal for selecting the thermal energy coupling water supply mode between the corresponding air-source heat pump unit and the solar water heater based on the judgment result includes: if the second water temperature data T2 is less than or equal to a thirteenth preset threshold value Th13, and the first water temperature data T1 is greater than or equal to a fourteenth preset threshold value Th14, determining a control signal for selecting the first thermal energy coupling water supply mode. Accordingly, based on the control signal, executing the selected thermal energy coupling water supply mode between the air-source heat pump unit and the solar water heater includes controlling thermal energy coupling between the solar water heater and the insulated water tank.

[0084] It should be noted here that if the second water temperature data T2 is less than or equal to the thirteenth preset threshold value Th13, and the first water temperature data T1 is greater than or equal to the fourteenth preset threshold value Th14, it proves that at this time, the water temperature in the solar water heater is too low and there is a risk of freezing. At this time, the water temperature of the insulated water tank is higher. At this time, controlling the thermal energy coupling between the solar water heater and the insulated water tank can effectively achieve solar antifreeze. The thermal energy coupling at this time can be achieved by turning on the solar circulation pump, which further improves the intelligence level of this application.

[0085] A control signal for selecting a thermal energy coupling water supply mode for the corresponding air-source heat pump unit and solar water heater is determined based on the judgment result and the first water temperature data T1, the second water temperature data T2, and the difference between the second water temperature data T2 and the first water temperature data T1. The control signal includes: if the judgment result shows that the water valve on the user side is not open, and if the second water temperature data T2 is greater than a thirteenth preset threshold value Th3, determining whether the second water temperature data T2 is greater than or equal to a fifteenth preset threshold value Th15; if the second water temperature data T2 is greater than or equal to the fifteenth preset threshold value Th15, or if the second water temperature data T2 is less than the first water temperature data T1, determining a control signal for selecting the second thermal energy coupling water supply mode. Accordingly, based on the control signal, the selected thermal energy coupling water supply mode for the air-source heat pump unit and solar water heater is executed, including controlling the solar water heater and the insulated water tank to stop thermal energy coupling.

[0086] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater is determined based on the judgment result and the difference between the first water temperature data T1, the second water temperature data T2, and the first water temperature data T1, including: if the judgment result is that the water valve is opened on the user side, it is determined whether the second water temperature data T2 is within the first preset temperature range Te1, and the control signal for selecting the thermal energy coupling water supply mode of the corresponding air-to-energy heat pump unit and the solar water heater is determined based on the judgment result.

[0087] In some embodiments, determining a control signal for selecting a thermal energy coupling water supply mode between the air-source heat pump unit and the solar water heater based on a judgment result includes: if the second water temperature data T2 is within the first preset temperature interval Te1, determining a control signal for selecting a third thermal energy coupling water supply mode, wherein the third thermal energy coupling water supply mode is a solar water supply mode. Accordingly, based on the control signal, executing the selected thermal energy coupling water supply mode between the air-source heat pump unit and the solar water heater includes: controlling the solar water heater to supply water to the user side, controlling the first electric butterfly valve M1 and the second electric butterfly valve M2 to open simultaneously, and controlling the third electric butterfly valve M3 and the fifth electric butterfly valve M5 to close simultaneously, thereby implementing the third thermal energy coupling water supply mode and controlling the solar water heater to supply water to the user side.

[0088] It should be noted that if the second water temperature data T2 is within the first preset temperature range Te1, it proves that the water temperature of the solar water collector is suitable for the user, and the solar water collector can be directly controlled to supply water to the user.

[0089] In some embodiments, the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined based on the judgment result, including: if the second water temperature data T2 is not within the first preset temperature range Te1, determining the control signal for selecting the fourth thermal energy coupling linkage water supply mode, and the fourth thermal energy coupling linkage water supply mode is to supply water to the user side through an insulated water tank.

[0090] Correspondingly, according to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water heater is executed, including: controlling the fifth electric butterfly valve M4 to open, and controlling the first electric butterfly valve M1 and the second electric butterfly valve M2 to close at the same time, realizing the fourth thermal energy coupling linkage water supply mode, and controlling the insulated water tank to supply water to the user side.

[0091] In some embodiments, before executing the thermal energy coupling water supply mode of the selected air-to-energy heat pump unit and the solar water heater according to the control signal, the method also includes: obtaining the current date data, the current time data and the liquid level data in the insulated water tank, obtaining the current season data according to the current date data, judging whether the current season data is winter, and determining whether to control the air-to-energy heat pump unit to start the direct heating mode according to the judgment result and the liquid level data and the current time data in the insulated water tank.

[0092] In some embodiments, based on the judgment result and the liquid level data and current time data in the insulation box, determining whether to control the air-source heat pump unit to start the direct heating mode includes: if the judgment result is that the current season is winter, judging whether the liquid level data L in the insulation box is less than or equal to the fifth preset threshold Th5, and determining whether to control the air-source heat pump unit to start the direct heating mode based on the judgment result.

[0093] In some embodiments, determining whether to control the air-source heat pump unit to activate the direct heating mode based on the control signal includes: if the liquid level data L is less than or equal to a fifth preset threshold value Th5, determining the control signal to control the air-source heat pump unit to activate the direct heating mode. Accordingly, executing the selected heat energy coupling water supply mode of the air-source heat pump unit and the solar water heater based on the control signal includes: controlling the air-source heat pump unit to activate the direct heating mode.

[0094] It should be noted here that if the liquid level data L is less than or equal to the fifth preset threshold Th5, it proves that it is not only winter with low temperature, but also the liquid level data is low, and the water supply of the insulated water tank may be insufficient. While controlling the air energy heat pump unit to turn on the direct heating mode, the tap water replenishment mode is turned on, which further improves the intelligence level of this application and greatly improves the user experience.

[0095] In some embodiments, determining whether to control the air-source heat pump unit to activate the direct heating mode based on a control signal includes: if the liquid level data L is greater than a fifth preset threshold value Th5, determining whether the liquid level data L is greater than or equal to a sixth preset threshold value Th6; if so, determining a control signal to control the air-source heat pump unit to deactivate the direct heating mode. Accordingly, executing the selected heat energy coupling water supply mode of the air-source heat pump unit and the solar water heater based on the control signal includes: controlling the air-source heat pump unit to deactivate the direct heating mode.

[0096] It should be noted here that if the liquid level data L is greater than the sixth preset threshold Th6, it proves that at this time, the water amount in the insulated water tank is sufficient and there is no need to turn on the direct heating mode, which further improves the intelligence level of this application. The direct heating mode is to directly heat the water passing through the air-to-heat heat pump unit to the set temperature, and the circulating water heating is to gradually heat the water passing through the air-to-heat pump unit to the set temperature.

[0097] In some embodiments, the control signal for determining whether to control the air-source heat pump unit to start the direct heating mode based on the judgment result and the liquid level data and current time data in the insulation box includes: if the judgment result is that the current season is not winter, judging whether the current time data Ti is within the second preset time interval Ti2; if so, judging whether the liquid level data L is less than or equal to the fifth preset threshold Th5, and determining whether to control the air-source heat pump unit to start the direct heating mode based on the judgment result.

[0098] In some embodiments, determining, based on the judgment result, whether to control the air-source heat pump unit to activate the direct heating mode control signal further includes: if the liquid level data L is less than or equal to a fifth preset threshold value Th5, determining a control signal to control the air-source heat pump unit to activate the direct heating mode. Accordingly, based on the control signal, executing the selected heat energy coupling water supply mode of the air-source heat pump unit and the solar water heater includes: controlling the air-source heat pump unit to activate the direct heating mode.

[0099] It is understood that the second preset time interval Ti2 is the time interval of peak water consumption, indicating that the current time is a peak water consumption period. If the current time data is within the second preset time interval Ti2, at this time, if the liquid level data is less than or equal to the fifth preset threshold Th5, it proves that the water output of the insulated water tank may be insufficient. At this time, the air-to-energy heat pump unit is controlled to start the direct heating mode, further improving the intelligence level of this application. This application sets four maximum liquid levels based on the total amount of hot water used throughout the day in the applicable location, and comprehensively considers the peak and non-peak water consumption periods to provide a system segmented control strategy, further improving the intelligence level of this application.

[0100] In some embodiments, determining, based on the judgment result, whether to control the air-source heat pump unit to activate the direct heating mode includes: if the liquid level data L is greater than a fifth preset threshold value Th5, determining whether the liquid level data L is greater than or equal to a sixth preset threshold value Th6; if so, determining a control signal to control the air-source heat pump unit to deactivate the direct heating mode. Accordingly, based on the control signal, executing the selected thermal energy coupling water supply mode of the air-source heat pump unit and the solar water heater includes: controlling the air-source heat pump unit to deactivate the direct heating mode.

[0101] In some embodiments of the present application, if the current time data Ti is not within the second preset time interval Ti2, a determination is made as to whether the liquid level data L is less than or equal to a seventh preset threshold value Th7. If so, a control signal is determined to control the air-source heat pump unit to activate the direct heating mode. Accordingly, based on the control signal, the selected thermal energy coupling water supply mode of the air-source heat pump unit and the solar water heater is executed, including: controlling the air-source heat pump unit to activate the direct heating mode.

[0102] In some embodiments, if the liquid level data L is greater than a seventh preset threshold value Th7, a determination is made as to whether the liquid level data L is greater than or equal to an eighth preset threshold value Th8. If so, a control signal is determined to control the air-source heat pump unit to deactivate the direct heating mode. Accordingly, based on the control signal, the selected heat energy coupling water supply mode of the air-source heat pump unit and the solar water heater is executed, including: controlling the air-source heat pump unit to deactivate the direct heating mode.

[0103] In some embodiments, the method further includes: determining whether the first water temperature data T1 is less than or equal to the ninth preset threshold Th9; if so, determining a control signal for controlling the start of the circulation pump of the air energy heat pump unit, and controlling the air energy heat pump unit and the insulated water tank to heat the circulating water.

[0104] It should be noted here that when the first water temperature data is less than or equal to the ninth preset threshold, it proves that the water temperature in the insulated water tank is low at this time, but the temperature is not too low and does not affect user use. The air energy heat pump unit and the insulated water tank can be controlled to perform circulating water heating without the need for direct heating mode, thereby further saving energy and further improving the intelligence level of this application.

[0105] In some embodiments, the method further includes: if the first water temperature data T1 is greater than a ninth preset threshold Th9, determining a control signal to shut down the circulating pump of the air energy heat pump unit, and controlling the air energy heat pump unit and the insulated water tank to stop circulating water heating.

[0106] It should be noted here that when the first water temperature data T1 is greater than the ninth preset threshold Th9, it proves that the water temperature in the insulated water tank at this time can meet the user's needs. The air energy heat pump unit and the insulated water tank can be controlled to stop the circulating water heating, thereby further saving energy and further improving the intelligence level of this application.

[0107] In some embodiments, the method also includes: determining whether the first water temperature data T1 is greater than or equal to the eleventh preset threshold value Th11, and determining whether the liquid level data L is less than or equal to the sixth preset threshold value Th6, and determining the control signal for controlling the opening or closing of the tap water replenishment solenoid valve based on the judgment result, and replenishing the tap water of the air-to-energy heat pump and solar-energy coupled hot water system or stopping the tap water replenishment of the air-to-energy heat pump and solar-energy coupled hot water system.

[0108] In some embodiments, the method further comprises:

[0109] If the first water temperature data T1 is less than the eleventh preset threshold value Th11 and the liquid level data L is greater than the sixth preset threshold value Th6, a control signal for controlling the tap water replenishment solenoid valve to be closed is determined to stop the tap water replenishment of the air energy heat pump and solar energy coupled hot water system;

[0110] If the first water temperature data T1 is greater than or equal to the eleventh preset threshold Th11 and the liquid level data L is less than the sixth preset threshold Th6, the control signal for controlling the opening of the tap water replenishment solenoid valve is determined to replenish tap water in the air-to-heat pump and solar-energy coupled hot water system.

[0111] It should be noted here that if the first water temperature data T1 is greater than or equal to the eleventh preset threshold and the liquid level data is less than the sixth preset threshold Th6, it proves that at this time, the water temperature in the insulated water tank is high but the liquid level is low. At this time, this application performs tap water replenishment, which further improves the intelligence level of this application.

[0112] In some embodiments, the method further comprises:

[0113] If it is determined that the water valve on the current user side is open, the control signal for controlling the water supply pump on the user side is determined to start water supply to the user side;

[0114] If it is determined that the water valve on the current user side is not opened, a control signal for shutting down the water supply pump on the user side is determined to stop water supply to the user side.

[0115] It is understandable that this application organically combines the air-to-energy heat pump unit with the solar water heater, and intelligently controls them, giving full play to the energy-saving advantages of solar energy and the reliability of the air-to-energy heat pump unit. This application upgrades the solar system structure and optimizes the solar system segmented control strategy, adding a direct water supply pipeline for the solar water heater. Through solar segmented control, the direct water supply to the solar water heater and the circulating heat supply with the insulated water tank are completed, giving priority to fully utilizing the clean heat source of solar energy, reducing the use of the air-to-energy heat pump unit, and providing an efficient hot water system solution through the intelligent linkage control of the air-to-energy heat pump and the solar water heater.

[0116] Figure 2 is a schematic diagram of the control device for an air-to-energy heat pump and solar-powered water heating system, provided in one embodiment of the present application. (See Figures 2 and 3.) The present invention provides an air-to-energy heat pump and solar-powered water heating system, comprising an air-to-energy heat pump unit, an insulated water tank, a solar water heater, and a control device. The air-to-energy heat pump unit and the solar water heater are each connected to the insulated water tank via a pipeline. The control device comprises an acquisition module 100, a determination module 200, and an execution module 300.

[0117] The acquisition module 100 is used to obtain the first water temperature data T1 of the insulated water tank corresponding to the air energy heat pump unit, the second water temperature data T2 of the solar water heater and the water supply pressure data P on the user side.

[0118] The determination module 200 is used to determine whether the water valve on the current user side is opened based on the water supply pressure data P on the user side, and to determine the control signal for selecting the corresponding thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector based on the judgment result and the first water temperature data T1, the second water temperature data T2, and the difference between the second water temperature data T2 and the first water temperature data T1.

[0119] The execution module 300 is used to execute the thermal energy coupling water supply mode of the selected air energy heat pump unit and solar water heater according to the control signal.

[0120] Specifically, the system further includes: a solar circulation pump Pu1.

[0121] The insulated water tank is provided with a first water outlet Out1 and a first water inlet In1. The solar circulation pump is arranged between the first water outlet Out1 of the insulated water tank and the water inlet In of the solar water collector. A water circulation loop is formed through pipelines between the first water outlet Out1 of the insulated water tank, the solar water collector and the first water inlet In1 of the insulated water tank. When the solar circulation pump is turned on, the insulated water tank and the solar water collector are thermally coupled.

[0122] Specifically, the system further includes: an air energy heat pump unit circulation pump Pu2.

[0123] The insulated water tank is provided with a second water inlet In2 and a second water outlet Out2. The second water outlet Out2 of the insulated water tank, the air energy heat pump unit and the second water inlet In2 of the insulated water tank form a water circulation loop through a pipeline. The air energy heat pump unit circulation pump Pu2 is arranged between the second water outlet Out2 of the insulated water tank and the air energy heat pump unit. When the air energy heat pump unit circulation pump is turned on, the air energy heat pump unit and the insulated water tank carry out circulating water heating.

[0124] Specifically, the system further includes: a first electric butterfly valve M1 and a second electric butterfly valve M2.

[0125] The first electric butterfly valve M1 is arranged between the water outlet Out of the solar water collector and the user-side water supply port Port1, and the second electric butterfly valve M2 is arranged between the tap water inlet Port2 and the water inlet In of the solar water collector.

[0126] Specifically, the system also includes: a third electric butterfly valve M3, a fourth electric butterfly valve M4, and a fifth electric butterfly valve M5. The insulated water tank is provided with a third water inlet In3 and a third water outlet Out3. The third electric butterfly valve M3 is arranged between the water outlet Out of the solar water collector and the first water inlet In1 of the insulated water tank. The fourth electric butterfly valve M4 is arranged between the tap water inlet Port2 and the third water inlet In3 of the insulated water tank. The fifth electric butterfly valve M5 is arranged between the third water outlet Out3 of the insulated water tank and the user-side water supply port Port1. When the fifth electric butterfly valve M5 is opened and the first electric butterfly valve M1 and the second electric butterfly valve M2 are simultaneously closed, the fourth thermal energy coupling linkage water supply mode is achieved.

[0127] Specifically, the system further includes: a first temperature sensor S1 is provided in the thermal insulation water tank, for collecting first water temperature data T1 of the thermal insulation water tank and sending the data to the determination module 200 .

[0128] The second temperature sensor S2 is provided in the solar water collector, and is used to collect the second water temperature data T2 of the solar water collector and send it to the control module.

[0129] Specifically, the system also includes: a user-side pressure sensor P1 and a user-side water supply pump Pu3. The user-side pressure sensor P1 and the user-side water supply pump Pu3 are installed at the user-side water supply port. The user-side pressure sensor P1 is used to detect the user-side water supply pressure data and send it to the control module. The user-side water supply pump Pu3 is used to supply water to the user end when the user opens the water valve.

[0130] In an embodiment of the present application, an electronic device is provided, comprising: a memory and a processor, the memory storing computer-readable instructions. When executed by the processor, the computer-readable instructions implement any of the control methods for the air-source heat pump and solar-coupled water heating system described above. The computer device can be broadly defined as a server, a terminal, or any other electronic device with the necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, memory, a network interface, a communication interface, etc., connected via a system bus. The processor of the computer device can be used to provide the necessary computing, processing, and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and internal memory. The non-volatile storage medium may store an operating system, a computer program, etc. in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and computer program in the non-volatile storage medium. The network interface and communication interface of the computer device can be used to connect to and communicate with external devices via a network. When executed by the processor, the computer program performs the steps of the method of the present application.

[0131] It will be understood by those skilled in the art that the method steps of the present application can be performed by instructing relevant hardware such as a computer device or a processor through a computer program, and the computer program can be stored in a non-transitory computer-readable storage medium, which causes the steps of the present application to be performed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database or other media herein may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0132] The various technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification as long as such combination does not conflict.

[0133] The specific implementation methods of the present application described above do not limit the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the claims of the present application.

Claims

1. A control method for an air energy heat pump and solar energy coupled hot water system, characterized in that: The method comprises: Acquire the first water temperature data (T1) of the insulation water tank corresponding to the air energy heat pump unit, the second water temperature data (T2) of the solar water collector, and the water supply pressure data (P) on the user side; According to the water supply pressure data (P) on the user side, it is judged whether the water valve on the current user side is opened, and according to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the second water temperature data (T2) and the first water temperature data (T1), a control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and the solar water collector is determined; According to the control signal, the thermal energy coupling water supply mode of the selected air energy heat pump unit and the solar water collector is executed.

2. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: The method determines whether a water valve is currently opened on the user side according to water supply pressure data (P) on the user side, comprising: Determine whether the water supply pressure data (P) on the user side is less than or equal to the first preset threshold value. If so, determine that the water valve on the user side is turned on; if not, determine that the water valve on the user side is not turned on.

3. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: According to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the first water temperature data (T1), a control signal for selecting a corresponding heat energy coupling water supply mode of an air energy heat pump unit and a solar water collector is determined, including: If the judgment result is that the water valve is not opened on the user side, it is judged whether the difference between the second water temperature data (T2) and the first water temperature data (T1) is greater than or equal to the second preset threshold, and it is judged whether the first water temperature data (T1) is less than or equal to the third preset threshold, and the control signal of the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and solar water collector is determined according to the judgment result.

4. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 3 is characterized in that: According to the judgment result, the control signal for selecting the corresponding heat energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined, including: If the difference between the second water temperature data (T2) and the first water temperature data (T1) is greater than or equal to the second preset threshold and the first water temperature data (T1) is less than or equal to the third preset threshold, determining a control signal for selecting the first thermal energy coupling water supply mode; The thermal energy coupling water supply mode of the selected air energy heat pump unit and the solar water heater is executed according to the control signal, including: controlling the thermal energy coupling between the solar water heater and the thermal insulation water tank, and controlling the water circulation between the solar water heater and the thermal insulation water tank.

5. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 3, characterized in that: The control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined according to the judgment result, including: If the difference between the second water temperature data (T2) and the first water temperature data (T1) is less than the second preset threshold, determine whether the difference between the second water temperature data (T2) and the first water temperature data (T1) is less than or equal to the fourth preset threshold, and determine to select the empty space according to the judgment result. Control signal of thermal energy coupling water supply mode of gas energy heat pump unit and solar water collector.

6. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 5, characterized in that: The control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined according to the judgment result, including: If the difference between the second water temperature data (T2) and the first water temperature data (T1) is less than or equal to a fourth preset threshold, or the first water temperature data (T1) is greater than a third preset threshold, a control signal for selecting the second thermal energy coupling water supply mode is determined; The thermal energy coupling water supply mode of the selected air energy heat pump unit and the solar water heater is executed according to the control signal, including: controlling the thermal energy coupling between the solar water heater and the thermal insulation water tank to stop, and controlling the water circulation between the solar water heater and the thermal insulation water tank to stop.

7. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: According to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the first water temperature data (T1), a control signal for selecting a corresponding heat energy coupling water supply mode of an air energy heat pump unit and a solar water collector is determined, including: If the judgment result is that the water valve is not opened on the user side, judge whether the second water temperature data (T2) is less than or equal to the thirteenth preset threshold value (Th13), and judge whether the first water temperature data (T1) is greater than or equal to the fourteenth preset threshold value (Th14), and determine the control signal of the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and solar water collector according to the judgment result.

8. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 7, characterized in that: Determining a control signal for selecting a thermal energy coupling water supply mode of a corresponding air energy heat pump unit and a solar water collector according to the judgment result, including: if the second water temperature data (T2) is less than or equal to a thirteenth preset threshold value (Th13), and the first water temperature data (T1) is greater than or equal to a fourteenth preset threshold value (Th14), determining a control signal for selecting a first thermal energy coupling water supply mode; According to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is executed, including controlling the thermal energy coupling between the solar water collector and the thermal insulation water tank.

9. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 7, characterized in that: Determine the control signal for selecting the thermal energy coupling water supply mode of the corresponding air energy heat pump unit and the solar water collector according to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the first water temperature data (T1): if the judgment result is that the water valve is not opened on the user side, if the second water temperature data (T2) is greater than the thirteenth preset threshold value (Th13), determine whether the second water temperature data (T2) is greater than or equal to the fifteenth preset threshold value (Th15); if the second water temperature data (T2) is greater than or equal to the fifteenth preset threshold value (Th15), or the second water temperature data (T2) is less than the first water temperature data (T1), determine the control signal for selecting the second thermal energy coupling water supply mode; According to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is executed, including: controlling the solar water collector and the thermal insulation water tank to stop the thermal energy coupling.

10. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: According to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the first water temperature data (T1), a control signal for selecting a corresponding heat energy coupling water supply mode of an air energy heat pump unit and a solar water collector is determined, including: If the judgment result is that the water valve is opened on the user side, it is judged whether the second water temperature data (T2) is within the first preset temperature range, and the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined according to the judgment result.

11. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 10, characterized in that: Determine the control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector according to the judgment result, including: if the second water temperature data (T2) is within the first preset temperature range, determine the control signal for selecting the third thermal energy coupling linkage water supply mode, the third thermal energy coupling linkage water supply mode is the solar water supply mode; According to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is executed, including: controlling the solar water collector to supply water to the user side, controlling the first electric butterfly valve (M1) and the second electric butterfly valve (M2) to open at the same time, and controlling the third electric butterfly valve (M3) and the fifth electric butterfly valve (M3) to close at the same time, so as to realize the third thermal energy coupling linkage water supply mode; controlling the solar water collector to supply water to the user side.

12. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 10, characterized in that: The control signal for selecting the thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is determined according to the judgment result, including: if the second water temperature data (T2) is not within the first preset temperature interval (Te1), the control signal for selecting the fourth thermal energy coupling linkage water supply mode is controlled, and the fourth thermal energy coupling linkage water supply mode is to supply water to the user side through the insulated water tank; According to the control signal, the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector is executed, including: controlling the fifth electric butterfly valve (M5) to open, and controlling the first electric butterfly valve (M1) and the second electric butterfly valve (M2) to close at the same time, realizing the fourth thermal energy coupling linkage water supply mode, and controlling the thermal insulation water tank to supply water to the user side.

13. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: Before executing the selected thermal energy coupling water supply mode of the air energy heat pump unit and the solar water collector according to the control signal, the method further includes: Get the current date data, the current time data and the liquid level data in the insulation water tank, get the current season data according to the current date data, judge whether the current season data is winter, and determine whether to control the air energy heat pump unit to start the direct heating mode control signal according to the judgment result and the liquid level data in the insulation tank and the current time data.

14. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 13, characterized in that: According to the judgment result, the liquid level data in the insulation box, and the current time data, the control signal for determining whether to control the air energy heat pump unit to start the direct heating mode includes: If the judgment result is that the current season is winter, determine whether the liquid level data (L) is less than or equal to the fifth preset threshold value (Th5), And based on the judgment, determine whether to control the control signal of the air energy heat pump unit to start the direct heating mode.

15. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 14, characterized in that: The control signal for determining whether to control the air energy heat pump unit to start the direct heating mode includes: If the liquid level data (L) is less than or equal to the fifth preset threshold value (Th5), a control signal for controlling the air energy heat pump unit to start the direct heating mode is determined.

16. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 14, characterized in that: The control signals for determining whether to control the air energy heat pump unit to start the direct heating mode include: If the liquid level data (L) is greater than the fifth preset threshold value (Th5), determine whether the liquid level data (L) is greater than or equal to the sixth preset threshold value (Th6). If so, determine the control signal for controlling the air energy heat pump unit to turn off the direct heating mode.

17. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 13, characterized in that: According to the judgment result, the liquid level data in the insulation box, and the current time data, the control signal for determining whether to control the air energy heat pump unit to start the direct heating mode includes: If the judgment result is that the current season is not winter, determine whether the current time data (Ti) is within the second preset time interval (Ti2). If so, determine whether the liquid level data (L) is less than or equal to the fifth preset threshold value (Th5), and determine whether to control the air energy heat pump unit to start the direct heating mode control signal based on the judgment result.

18. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 17, characterized in that: The control signal for determining whether to control the air energy heat pump unit to start the direct heating mode according to the judgment result includes: If the liquid level data (L) is less than or equal to the fifth preset threshold value (Th5), the control determines a control signal for controlling the air energy heat pump unit to start the direct heating mode.

19. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 17, characterized in that: The control signal for determining whether to control the air energy heat pump unit to start the direct heating mode according to the judgment result includes: If the liquid level data (L) is greater than the fifth preset threshold value (Th5), determine whether the liquid level data (L) is greater than or equal to the sixth preset threshold value (Th6). If so, determine the control signal for controlling the air energy heat pump unit to turn off the direct heating mode.

20. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 17, characterized in that: If the current time data (Ti) is not within the second preset time interval (Ti2), determine whether the liquid level data (L) is less than or equal to the seventh preset threshold value (Th7). If so, control to determine the control signal for controlling the air energy heat pump unit to start the direct heating mode.

21. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 20, characterized in that: If the liquid level data (L) is greater than the seventh preset threshold value (Th7), determine whether the liquid level data (L) is greater than or equal to the eighth preset threshold value (Th8). If so, determine the control signal for controlling the air energy heat pump unit to turn off the direct heating mode.

22. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: The method further comprises: Determine whether the first water temperature data (T1) is less than or equal to the ninth preset threshold value (Th9). If so, determine the control signal for controlling the air energy heat pump unit to start the circulation pump, and control the air energy heat pump unit and the insulated water tank to heat the circulating water.

23. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 22, characterized in that: The method further comprises: If the first water temperature data (T1) is greater than the ninth preset threshold value (Th9), a control signal for controlling the air energy heat pump unit to shut down the circulating pump is determined, and the air energy heat pump unit and the insulated water tank are controlled to stop circulating water heating.

24. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: The method further comprises: The control determines whether the first water temperature data (T1) is greater than or equal to the eleventh preset threshold value (Th11), and determines whether the liquid level data (L) is less than or equal to the sixth preset threshold value (Th6), and determines the control signal for controlling the opening or closing of the tap water replenishment solenoid valve according to the judgment result, to replenish the tap water of the air energy heat pump and the solar energy coupled hot water system or to stop the tap water replenishment of the air energy heat pump and the solar energy coupled hot water system.

25. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 24, characterized in that: The method further comprises: If the first water temperature data (T1) is less than the eleventh preset threshold value (Th11) and the liquid level data (L) is greater than the sixth preset threshold value (Th6), the control determines the control signal for closing the tap water replenishment solenoid valve, and stops the tap water replenishment of the air energy heat pump and solar energy coupled hot water system; If the first water temperature data (T1) is greater than or equal to the eleventh preset threshold value (Th11) and the liquid level data (L) is less than the sixth preset threshold value (Th6), the control determines the control signal to control the opening of the tap water replenishment solenoid valve to replenish the tap water of the air energy heat pump and solar energy coupled hot water system.

26. The control method of the air energy heat pump and solar energy coupled water heating system according to claim 1, characterized in that: The method further comprises: If it is determined that the water valve on the current user side is turned on, a control signal for controlling the water supply pump on the user side to start is determined to supply water to the user side; If it is determined that the water valve on the current user side is not open, a control signal for shutting down the water supply pump on the user side is determined to stop water supply to the user side.

27. An air energy heat pump and solar energy coupled hot water system, comprising: An air-energy heat pump unit, an insulated water tank, a solar water heater and a control device; wherein the air-energy heat pump unit and the solar water heater are respectively connected to the insulated water tank through pipelines; the control device comprises: An acquisition module (100) is used to acquire first water temperature data (T1) of a heat preservation water tank corresponding to the air energy heat pump unit, second water temperature data (T2) of a solar water collector, and water supply pressure data (P) on the user side; A determination module (200) is used to determine whether the water valve on the current user side is turned on according to the water supply pressure data (P) on the user side, and determining a control signal for selecting a corresponding heat energy coupling water supply mode of an air energy heat pump unit and a solar water collector according to the judgment result and the difference between the first water temperature data (T1), the second water temperature data (T2), and the first water temperature data (T1); The execution module 300 is used to execute the thermal energy coupling water supply mode of the selected air energy heat pump unit and the solar water collector according to the control signal.

28. The air energy heat pump and solar energy coupled water heating system according to claim 27, characterized in that: The system also includes: a solar circulation pump (Pu2); the insulated water tank is provided with a first water outlet (Out1) and a first water inlet (In1), the solar circulation pump is arranged between the first water outlet (Out1) of the insulated water tank and the water inlet (In) of the solar water collector, and a water circulation loop is formed through pipelines between the first water outlet (Out1) of the insulated water tank, the solar water collector and the first water inlet (In1) of the insulated water tank. When the solar circulation pump is turned on, the insulated water tank and the solar water collector are thermally coupled.

29. The air energy heat pump and solar energy coupled water heating system according to claim 27, characterized in that: The system also includes: an air energy heat pump unit circulation pump; the insulated water tank is provided with a second water inlet (In2) and a second water outlet (Out2); the second water outlet (Out2) of the insulated water tank, the air energy heat pump unit and the second water inlet (In2) of the insulated water tank form a water circulation loop through a pipeline; the air energy heat pump unit circulation pump (Pu2) is arranged between the second water outlet (Out2) of the insulated water tank and the air energy heat pump unit; when the air energy heat pump unit circulation pump is turned on, the air energy heat pump unit and the insulated water tank perform circulating water heating.

30. The air energy heat pump and solar energy coupled water heating system according to claim 27, characterized in that: The system further comprises: a first electric butterfly valve (M1) and a second electric butterfly valve (M2), wherein the first electric butterfly valve (M1) is arranged between a water outlet (Out) of the solar water collector and a water supply port (Port1) on the user side, and the second electric butterfly valve (M2) is arranged between a tap water inlet (Port2) and a water inlet (In) of the solar water collector.

31. The air energy heat pump and solar energy coupled hot water system according to claim 28, characterized in that: The system further comprises: The third electric butterfly valve (M3), the fourth electric butterfly valve (M4) and the fifth electric butterfly valve (M5); the insulated water tank is provided with a third water inlet (In3) and a third water outlet (Out3); the third electric butterfly valve (M3) is arranged between the water outlet (Out) of the solar water collector and the first water inlet (In1) of the insulated water tank, the fourth electric butterfly valve (M4) is arranged between the tap water inlet (Port2) and the third water inlet (In3) of the insulated water tank, and the fifth electric butterfly valve (M5) is arranged between the third water outlet (Out3) of the insulated water tank and the user-side water supply port (Port1); when the fifth electric butterfly valve (M5) is opened, and the first electric butterfly valve (M1) and the second electric butterfly valve (M2) are closed at the same time, the fourth thermal energy coupling linkage water supply mode is realized.

32. The air energy heat pump and solar energy coupled water heating system according to claim 27, characterized in that: The system further comprises: A first temperature sensor (S1), arranged in the thermal insulation water tank, for collecting first water temperature data (T1) of the thermal insulation water tank and sending the data to the determination module (200); The second temperature sensor (S2) is arranged in the solar water collector and is used to collect the second water temperature data (T2) of the solar water collector and send it to the control module.

33. The air energy heat pump and solar energy coupled water heating system according to claim 27, characterized in that: The system further comprises: A user-side pressure sensor (P1) and a user-side water supply pump (Pu3) are provided at a user-side water supply port (Port1) for detecting water supply pressure data (P) on the user side and sending the data to a control module. The user-side water supply pump (Pu) is used to supply water to the user end when the user opens a water valve.

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