Solar energy and air energy coupled hot water system, control method and electronic equipment

Abstract

The application provides a solar energy and air energy coupled hot water system, a control method and electronic equipment, and the solar energy and air energy coupled hot water system comprises a solar energy collector and an air energy heat pump unit; at least two water tanks are connected in series, and a first water tank in the at least two water tanks is connected with the solar energy collector and the air energy heat pump unit respectively; a water supply end of a second water tank in the at least two water tanks is connected with a user side; and a control device is used for acquiring current time information, first water temperature data t1 of the first water tank and second water temperature data t2 of the solar energy collector. The solar energy and air energy coupled hot water system can effectively solve the technical problem that a solar energy and air energy combined heating system in the prior art cannot fully utilize hot water in the solar energy collector which is close to a required temperature, thereby reducing the operation efficiency of the system and the use experience of a user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation, in particular to a solar energy and air energy coupled hot water system, a control method and electronic equipment. BACKGROUND

[0002] Under the background of the national "double carbon" goal, the importance of building energy saving is increasingly prominent. Hot water, as an indispensable part of national life, has a large demand and a long peak period of water use, resulting in a huge total energy consumption of hot water systems. Therefore, energy-saving control for hot water systems not only has important strategic significance for achieving the national energy-saving and emission-reducing goal, but also effectively improves energy utilization efficiency and promotes sustainable development.

[0003] Currently, in the solar energy and air energy combined heating system on the market, the solar heat source usually adopts a temperature difference control cycle, which fails to fully utilize the hot water in the solar collector that is close to the required temperature, resulting in a certain degree of energy waste and reducing the operating efficiency of the system. In addition, this control method further affects the linkage heating effect of the air energy heat pump and the solar collector, and cannot achieve optimal coordination, thereby affecting the user experience.

[0004] Therefore, the prior art still needs to be further developed. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies and provide a solar energy and air energy coupled hot water system, a control method and electronic equipment to solve the technical problem that the solar energy and air energy combined heating system in the prior art fails to fully utilize the hot water in the solar collector that is close to the required temperature, thereby reducing the operating efficiency of the system and the user experience.

[0006] To achieve the above technical purpose, according to one aspect of the present application: a solar energy and air energy coupled hot water system is provided, which comprises: a solar collector and an air energy heat pump unit; at least two water tanks, the at least two water tanks being connected in series, a first water tank in the at least two water tanks being connected with the solar collector and the air energy heat pump unit respectively; a water supply end of a second water tank in the at least two water tanks being connected with a user side; and a control device for acquiring current time information, first water temperature data t1 of the first water tank and second water temperature data t2 of the solar collector, and adaptively adjusting the water supply mode of the hot water system according to the acquired current time information and the acquired first water temperature data t1 and / or the acquired second water temperature data t2.

[0007] Further, the first water tank has a first water inlet end and a second water outlet end; the first water inlet end is connected with the water outlet of the solar collector; the second water outlet end is connected with the second water tank; the water inlet of the solar collector is connected with the output of the water supply network; the hot water system further comprises a first control valve arranged between the water inlet of the solar collector and the output of the water supply network, the water inlet of the solar collector is connected with the output of the water supply network through the first control valve; the first control valve is in communication connection with the control device, and the control device is used for controlling the on-off of the first control valve; when the current time is within the preset solar radiation time interval, and the control device adjusts the water supply mode of the hot water system to the first water supply mode, the control device controls the first control valve to be opened, and the solar collector supplies the water heated by the water supply network to the user side through the at least two water tanks.

[0008] Further, the first water tank has a first water inlet end, a second water inlet end, a second water outlet end and a third water outlet end, and the first water inlet end and the second water outlet end are located at the top of the first water tank, and the second water inlet end and the third water outlet end are located at the bottom of the first water tank; the first water inlet end is connected with the water outlet of the solar collector; the second water inlet end is used for being connected with the output of the water supply network; the second water outlet end is connected with the second water tank; the third water outlet end is connected with the water inlet of the solar collector; the hot water system further comprises a first circulating pump arranged between the third water outlet end and the water inlet of the solar collector, and the first circulating pump is connected with the third water outlet end and the water inlet of the solar collector respectively; the first circulating pump is in communication connection with the control device, and the control device is used for controlling the start-stop of the first circulating pump; when the current time is within the preset solar radiation time interval, and the control device adjusts the water supply mode of the hot water system to the second water supply mode, the control device controls the first circulating pump to be started; the water in the first water tank enters the solar collector through the first circulating pump and the water inlet of the solar collector to be heated, so that the first water tank and the solar collector are coupled in thermal energy.

[0009] Further, the hot water system further comprises a second control valve arranged between the third water outlet end and the first circulating pump, and the first circulating pump is connected with the third water outlet end through the second control valve; the second control valve is in communication connection with the control device, and the control device is used for controlling the on-off of the second control valve; when the water supply mode of the hot water system is the second water supply mode, the control device controls the second control valve to be opened.

[0010] Further, the hot water system further comprises a third control valve, the third control valve is connected with the water outlet of the solar collector and the first water inlet end respectively; the control device is in communication connection with the third control valve, and the control device is used for controlling the on-off of the third control valve.

[0011] Further, the hot water system further comprises: a first temperature detection member arranged at the water outlet of the air energy heat pump unit; the first temperature detection member is configured to detect third water temperature data t3 from the water outlet of the air energy heat pump unit; the control device is in communication connection with the first temperature detection member, and the control device is configured to obtain the third water temperature data t3 detected by the first temperature detection member; wherein, when the current time is within the preset solar radiation time interval or the preset non-solar radiation time interval, and the control device is configured to control the air energy heat pump unit to start according to the obtained first water temperature data t1, the control device is configured to adjust the water supply mode of the hot water system to the third water supply mode or the fourth water supply mode according to the obtained third water temperature data t3.

[0012] Further, the first water tank has a second water outlet end, a third water outlet end, a second water inlet end and a fourth water inlet end, the second water outlet end is located at the top of the first water tank, and the second water outlet end is connected with the second water tank; the third water outlet end, the second water inlet end and the fourth water inlet end are all located at the bottom of the first water tank, the third water outlet end is connected with the water inlet of the air energy heat pump unit; the second water inlet end is configured to be connected with the output port of the water supply network; the fourth water inlet end is connected with the water outlet of the air energy heat pump unit; the hot water system further comprises: a second circulating pump arranged between the third water outlet end and the water inlet of the air energy heat pump unit, the third water outlet end is connected with the water inlet of the air energy heat pump unit through the second circulating pump; the second circulating pump is in communication connection with the control device, and the control device is configured to control the start and stop of the second circulating pump; wherein, when the control device adjusts the water supply mode of the hot water system to the third water supply mode, the control device controls the second circulating pump to start, the water in the first water tank enters the air energy heat pump unit through the second circulating pump and the water inlet of the air energy heat pump unit for heating, and the water heated by the air energy heat pump unit enters the first water tank through the water outlet of the air energy heat pump unit and the fourth water inlet end, so that the first water tank and the air energy heat pump unit are coupled in heat energy.

[0013] Further, the hot water system further comprises: a fourth control valve arranged between the fourth water inlet end and the water outlet of the air energy heat pump unit, the water outlet of the air energy heat pump unit is connected with the fourth water inlet end through the fourth control valve; the control device is in communication connection with the fourth control valve, and the control device is configured to control the on-off of the fourth control valve; wherein, when the water supply mode of the hot water system is the third water supply mode, the control device controls the fourth control valve to open.

[0014] Further, the water outlet of the air energy heat pump unit is connected with the third water inlet end of the second water tank; the first water tank has a second water outlet end, a third water outlet end and a second water inlet end, the second water outlet end is located at the top of the first water tank, and the second water outlet end is connected with the second water tank; the third water outlet end is located at the bottom of the first water tank, and the third water outlet end is connected with the water inlet of the air energy heat pump unit; the second water inlet end is used to be connected with the output port of the water supply network; the hot water system further comprises a fifth control valve arranged between the water outlet of the air energy heat pump unit and the third water inlet end of the second water tank, the water outlet of the air energy heat pump unit is connected with the third water inlet end of the second water tank through the fifth control valve; the fifth control valve is in communication connection with the control device, and the control device is used to control the on-off of the fourth control valve; wherein, when the control device adjusts the water supply mode of the hot water system to the fourth water supply mode, the control device controls the fifth control valve to be opened, and the water heated by the air energy heat pump unit is supplied to the user side through the water outlet of the air energy heat pump unit and the second water tank.

[0015] Further, the hot water system further comprises a sixth control valve, the sixth control valve is arranged between the second water inlet end and the output port of the water supply network, and the second water inlet end is connected with the output port of the water supply network through the sixth control valve; the control device is in communication connection with the sixth control valve, and the control device is used to control the on-off of the sixth control valve.

[0016] Further, the hot water system further comprises a second temperature detection member, the second temperature detection member is arranged at the output port of the water supply network, and the second temperature detection member is used to detect the fourth water temperature data t4 at the output port of the water supply network; the second temperature detection member is in communication connection with the control device, and the control device is used to acquire the fourth water temperature data t4 detected by the second temperature detection member; wherein, when the current time is in the preset non-solar radiation time interval, the control device compares the acquired second water temperature data t2 with the first water temperature data t1 and the fourth water temperature data t4 respectively; according to the comparison result, it is judged whether the water supply mode of the hot water system is adjusted to the fifth water supply mode; if the control device adjusts the water supply mode of the hot water system to the fifth water supply mode, the solar collector and the air energy heat pump unit are coupled in heat energy.

[0017] Further, the hot water system further comprises: a timing device, configured to time according to a preset solar radiation time interval and a preset non-solar radiation time interval; a control device, in communication connection with the timing device, the control device being configured to acquire current time information of the timing device; and / or a third temperature detection member, disposed in the first water tank, the third temperature detection member being configured to detect first water temperature data t1 of the first water tank, the third temperature detection member being in connection with the control device, and configured to transmit the detected first water temperature data t1 to the control device; and / or a fourth temperature detection member, disposed in the solar collector, the fourth temperature detection member being configured to detect second water temperature data t2 of the solar collector, the fourth temperature detection member being in connection with the control device, and configured to transmit the detected second water temperature data t2 to the control device.

[0018] According to another aspect of the present application, there is provided a control method applied to the above-mentioned hot water system, the control method comprising: acquiring current time information, first water temperature data t1 of the first water tank, and second water temperature data t2 of the solar collector; and adaptively adjusting the water supply mode of the hot water system according to the acquired current time information, the acquired first water temperature data t1, and / or the acquired second water temperature data t2.

[0019] Further, the method of adaptively adjusting the water supply mode of the hot water system according to the acquired current time information, the acquired first water temperature data t1, and / or the acquired second water temperature data t2 comprises: if the current time is located in the preset solar radiation time interval, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is greater than or equal to a first preset value T1; if t2-t1≥T1, adjusting the water supply mode of the hot water system to a second water supply mode, so as to enable the first water tank and the solar collector to be coupled in thermal energy; and if t2-t1

[0020] Further, the control method further comprises: during the process of the hot water system supplying water to the user side in the second water supply mode, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is less than or equal to a second preset value T2; if t2-t1≤T2, the hot water system will stop the current second water supply mode; and wherein T1>T2.

[0021] Further, if t2-t1T1, the method for adjusting the water supply mode of the hot water system according to the judgment result includes: if t2t1, adjusting the water supply mode of the hot water system to the first water supply mode, so that the solar collector heats the water delivered by the water supply network and supplies the user side through the at least two water tanks; if t2

[0022] Further, the method for controlling the air energy heat pump unit according to the judgment result includes: if t1t0-T3, controlling the air energy heat pump unit to start; after the air energy heat pump unit starts, obtaining third water temperature data t3 at the water outlet of the air energy heat pump unit; judging whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3; if t3t0-T3, adjusting the water supply mode of the hot water system to the third water supply mode, so that the first water tank and the air energy heat pump unit are coupled in heat energy; if t3>t0-T3, adjusting the water supply mode of the hot water system to the fourth water supply mode, so that the air energy heat pump unit heats the water and directly supplies the user side.

[0023] Further, the control method further includes: after the air energy heat pump unit starts, judging whether the first water temperature data t1 is greater than or equal to the preset water temperature t0 in the second water tank, and whether the fifth water temperature data t5 at the water inlet of the air energy heat pump unit is greater than or equal to the preset water temperature t0; if t1t0 and t5t0, controlling the air energy heat pump unit to stop.

[0024] Further, the method for adaptively adjusting the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2 further includes: if the current time is located in the preset non-solar radiation time interval, obtaining fourth water temperature data t4 at the output port of the water supply network; judging whether the second water temperature data t2 is greater than the fourth water temperature data t4 and whether the second water temperature data t2 is less than the first water temperature data t1; if t2>t4 and t2

[0025] According to another aspect of the present application: an electronic device, comprising: a processor, and a memory connected to the processor; the memory is used to store a computer program; the processor is used to invoke and execute the computer program in the memory to perform the above-mentioned control method.

[0026] Advantages:

[0027] With the technical scheme, the solar energy and air energy coupled hot water system provided by the application realizes efficient and intelligent hot water supply by arranging a solar energy collector, an air energy heat pump unit, at least two water tanks and a control device. Specifically, the at least two water tanks are connected in series, wherein the first water tank in the at least two water tanks is connected with the solar energy collector and the air energy heat pump unit respectively, and the water supply end of the second water tank in the at least two water tanks is connected with the user side; so as to supply hot water to the user side through the water supply end of the second water tank. In addition, the control device can obtain current time information, first water temperature data t1 of the first water tank and second water temperature data t2 of the solar energy collector, and the control device can adaptively adjust the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2, so as to switch the heat supply mode under different conditions. As can be seen, by arranging the at least two water tanks and connecting the at least two water tanks in series, the layered storage and graded supply of water at different temperatures can be realized, and the energy efficiency of the system is further improved. Moreover, by connecting the first water tank with the solar energy collector and the air energy heat pump unit, the two renewable energy sources, solar energy and air energy, can be fully utilized. Especially during the period of sufficient sunlight, the hot water heated by the solar energy collector is preferentially used, and the dependence on the air energy heat pump is reduced, so as to improve the energy utilization efficiency of the system. In addition, by obtaining the current time information, the first water temperature data t1 of the first water tank and the second water temperature data t2 of the solar energy collector, the control device can intelligently judge and adaptively adjust the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2, so as to switch the heat supply mode under different conditions, so as to fully utilize the hot water in the solar energy collector that is close to the required temperature, and improve the overall energy utilization efficiency of the system. At the same time, by adaptively adjusting the water supply mode, the hot water supply can be optimized according to the actual heat demand and environmental conditions, and the user experience is improved. Moreover, by combining and intelligently controlling the air energy heat pump unit and the solar energy collector, the energy-saving advantage of solar energy and the comfort of the hot water system can be fully utilized. In addition, by adjusting the water supply mode of the hot water system according to the obtained current time, the clean heat source of solar energy can be fully utilized. The solar energy and air energy coupled hot water system of the application can effectively solve the technical problem that the solar energy and air energy combined heat supply system in the prior art fails to fully utilize the hot water in the solar energy collector that is close to the required temperature, thereby reducing the operation efficiency of the system and the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure schematic diagram of the embodiment of the solar energy and air energy coupled hot water system of the application is shown;

[0029] Figure 2A flowchart showing an embodiment of the control method of the application.

[0030] In the above drawings, reference numerals include the following:

[0031] 1, solar collector; 2, air energy heat pump unit; 3, first water tank; 31, first water inlet end; 32, second water outlet end; 33, second water inlet end; 34, third water outlet end; 35, fourth water inlet end; 36, connecting pipe; 4, second water tank; 41, water supply end; 42, third water inlet end; 5, first control valve; 6, first circulating pump; 7, second control valve; 8, third control valve; 9, first temperature detection member; 10, second circulating pump; 11, fourth control valve; 12, fifth control valve; 13, sixth control valve; 14, second temperature detection member; 15, sixth temperature detection member; 16, third temperature detection member; 17, fourth temperature detection member; 100, water supply pipe network. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be considered as falling within the scope of protection of the present application.

[0033] Please refer to Figure 1 As shown in the drawings, according to the embodiments of the present application, the present application provides a solar and air energy coupled hot water system, which comprises a solar collector 1, an air energy heat pump unit 2, at least two water tanks and a control device. The at least two water tanks are connected in series. A first water tank 3 in the at least two water tanks is connected with the solar collector 1 and the air energy heat pump unit 2 respectively. A water supply end 41 of a second water tank 4 in the at least two water tanks is connected with a user side. The control device is used to acquire current time information, first water temperature data t1 of the first water tank 3 and second water temperature data t2 of the solar collector 1, and to adaptively adjust a water supply mode of the hot water system according to the acquired current time information and the acquired first water temperature data t1 and / or the acquired second water temperature data t2.

[0034] It can be seen that the solar energy and air energy coupled hot water system provided by the present application realizes efficient and intelligent hot water supply by arranging the solar energy collector 1, the air energy heat pump unit 2, at least two water tanks and the control device. Specifically, the at least two water tanks are sequentially connected in series, wherein the first water tank 3 in the at least two water tanks is connected with the solar energy collector 1 and the air energy heat pump unit 2 respectively, and the water supply end 41 of the second water tank 4 in the at least two water tanks is connected with the user side; so as to transport hot water to the user side through the water supply end 41 of the second water tank 4. In addition, the control device can obtain current time information, first water temperature data t1 of the first water tank 3 and second water temperature data t2 of the solar energy collector 1, and the control device can adaptively adjust the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2, so as to switch the heat supply mode under different conditions.

[0035] Therefore, by arranging at least two water tanks and sequentially connecting the at least two water tanks in series, the layered storage and graded supply of water at different temperatures can be realized, and the system energy efficiency is further improved. Moreover, by connecting the first water tank with the solar energy collector and the air energy heat pump unit, the two renewable energy sources, solar energy and air energy, can be fully utilized. In particular, during the period of sufficient sunlight, the hot water heated by the solar energy collector is preferentially used, and the dependence on the air energy heat pump is reduced, thereby improving the energy utilization efficiency of the system. In addition, by obtaining current time information, first water temperature data t1 of the first water tank 3 and second water temperature data t2 of the solar energy collector 1, the control device can intelligently judge and adaptively adjust the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2, so as to switch the heat supply mode under different conditions, thereby fully utilizing the hot water in the solar energy collector that is close to the required temperature, and improving the overall energy utilization efficiency of the system. At the same time, by adaptively adjusting the water supply mode, the hot water supply can be optimized according to the actual heat demand and environmental conditions, and the user experience is improved. Moreover, by combining and intelligently controlling the air energy heat pump unit 2 and the solar energy collector 1, the energy-saving advantages of solar energy and the comfort of the hot water system can be fully utilized. In addition, by adjusting the water supply mode of the hot water system according to the obtained current time, the clean heat source of solar energy can be fully utilized. The solar energy and air energy coupled hot water system of the present application can effectively solve the technical problem that the solar energy and air energy combined heat supply system in the prior art fails to fully utilize the hot water in the solar energy collector that is close to the required temperature, thereby reducing the operation efficiency of the system and the user experience.

[0036] Optionally, the water storage capacity of the solar energy collector 1 is selected as 1 / 3 of the water tank, so as to improve the economic benefit of the solar energy system.

[0037] Optionally, asFigure 1 As shown, a plurality of intermediate water tanks can be provided between the first water tank 3 and the second water tank 4, and the first water tank 3, the plurality of intermediate water tanks, and the second water tank 4 are sequentially connected in series. Specifically, the first water tank 3 is connected to the plurality of intermediate water tanks in sequence, each intermediate water tank is connected to the next intermediate water tank, and finally connected to the second water tank 4. This series structure forms a multi-stage heating and storage system. With such a structure, a temperature gradient can be formed in the system by connecting multiple water tanks in series. The water temperature in each water tank gradually increases, which helps to more finely control the water temperature and ensure that the hot water supplied to the user is stable and suitable.

[0038] Optionally, the first water tank 3, the second water tank 4, and the plurality of intermediate water tanks are all pressure-bearing water tanks. With such a structure, designing each water tank as a pressure-bearing water tank can maintain a certain pressure inside each water tank, which helps to maintain pressure balance in the system. This can prevent bubbles or water hammer phenomenon in the water tank due to pressure fluctuations, thereby improving the stability and reliability of the system. And it can ensure that the water flow is evenly distributed throughout the system, avoiding local pressure that is too high or too low, ensuring that each water tank can work effectively. And the sealing performance of the pressure-bearing water tank is better, which can effectively prevent water tank leakage and protect the integrity of the system and the safety of the user. At the same time, the water in the pressure-bearing water tank flows under high pressure, which can reduce heat loss and improve heat transfer efficiency. This helps to maintain water temperature, reduce additional heating requirements, and improve the overall energy efficiency of the system. In addition, the water in the pressure-bearing water tank mixes more evenly under high pressure, which can ensure more uniform water temperature and avoid local overheating or undercooling problems, providing higher quality hot water. And the pressure-bearing water tank can deliver hot water to a farther place without being restricted by terrain and height, suitable for large buildings or distributed hot water systems.

[0039] Optionally, the second water tank 4 has two, and the water supply end 41 of each of the two second water tanks 4 is connected to the user side.

[0040] Specifically, as Figure 1As shown, the first water tank 3 has a first water inlet end 31 and a second water outlet end 32; the first water inlet end 31 is connected with the water outlet of the solar collector 1; the second water outlet end 32 is connected with the second water tank 4; the water inlet of the solar collector 1 is connected with the output of the water supply network 100; the hot water system further comprises: a first control valve 5 arranged between the water inlet of the solar collector 1 and the output of the water supply network 100, the water inlet of the solar collector 1 is connected with the output of the water supply network 100 through the first control valve 5; the first control valve 5 is in communication connection with the control device, and the control device is used for controlling the on-off of the first control valve 5; wherein, when the current time is within the preset solar radiation time interval, and the control device adjusts the water supply mode of the hot water system to the first water supply mode, the control device controls the first control valve 5 to open, and the solar collector 1 supplies the water heated by the water supply network 100 to the user side through at least two water tanks. By adopting such structural arrangement and intelligent control of the first control valve 5, the system preferentially uses the solar collector 1 to heat cold water during the period of sufficient solar energy, reduces the dependence on air energy heat pump, maximizes the use of solar energy resources, thereby significantly reducing the operation cost and energy consumption of the system.

[0041] Optionally, the control device judges whether the current time is within the preset solar radiation time interval according to the obtained current time. If yes, it is judged whether the second water temperature data t2 is greater than or equal to the first water temperature data t1; if , the control device adjusts the water supply mode of the hot water system to the first water supply mode (i.e. solar direct supply user mode), and at the same time, controls the first control valve 5 to open, so that the water outlet of the solar collector 1 and the output of the water supply network 100 are communicated, the water output from the output of the water supply network 100 enters the solar collector 1 in sequence through the first control valve 5 and the water inlet of the solar collector 1 for heating, then the heated water enters the first water tank 3 through the water outlet of the solar collector 1 and the first water inlet end 31, and then the water in the first water tank 3 is transported to the second water tank 4 through the second water outlet end 32, finally, the heated water is transported from the water supply end 41 of the second water tank 4 to the user side.

[0042] Wherein, the preset solar radiation time interval refers to the time period of solar energy collection according to the local sunshine rule. During this preset time, solar energy collection will be continuously carried out.

[0043] Specifically, as Figure 1As shown, the first water inlet end 31 and the second water outlet end 32 are both located at the top of the first water tank 3; the first water tank 3 further has a second water inlet end 33 and a third water outlet end 34, both of which are located at the bottom of the first water tank 3; the second water inlet end 33 is connected with the output port of the water supply network 100; the third water outlet end 34 is connected with the water inlet of the solar collector 1; the hot water system further comprises a first circulating pump 6 arranged between the third water outlet end 34 and the water inlet of the solar collector 1, and the first circulating pump 6 is connected with the third water outlet end 34 and the water inlet of the solar collector 1 respectively; the first circulating pump 6 is in communication connection with the control device, and the control device is used for controlling the start and stop of the first circulating pump 6; wherein, when the current time is within the preset solar radiation time interval, and the control device adjusts the water supply mode of the hot water system to the second water supply mode, the control device controls the first circulating pump 6 to start; the water in the first water tank 3 enters the solar collector 1 through the first circulating pump 6 and the water inlet of the solar collector 1 for heating, so that the first water tank 3 and the solar collector 1 are coupled in thermal energy.

[0044] With such a structure, the first water inlet end 31 is arranged at the top of the first water tank 3, and the second water inlet end 33 is arranged at the bottom of the first water tank 3, which can make the heated water enter from the top of the first water tank 3, and the cold water enter from the bottom of the first water tank 3, thereby forming natural convection, making the water temperature distribution in the first water tank 3 more uniform, and making the temperature gradient in the water tank more obvious. Such temperature gradient helps to better utilize the heat in the water tank, ensures that the hot water maintains a high temperature during transmission, and improves the energy efficiency of the system. At the same time, arranging the second water outlet end 32 at the top of the first water tank 3 can transport the water with the highest temperature in the first water tank 3 to the next water tank, which can ensure that the hot water temperature supplied to the user is always at a high level, and provide higher quality hot water supply. Arranging the third water outlet end 34 at the bottom of the first water tank 3 can transport the water with lower temperature in the first water tank 3 to the heating equipment, which can ensure that the water temperature distribution in the first water tank 3 is more uniform, and form a clear temperature gradient. The water temperature at the top is higher, and the water temperature at the bottom is lower. Such temperature gradient helps to better utilize the heat in the water tank. It can be seen that reasonable water port design avoids direct entry of cold water into the hot water area, prevents water temperature short circuit phenomenon, and ensures continuous supply of hot water. In addition, by arranging the first circulating pump 6, the water with lower temperature at the bottom of the first water tank 3 can be sent back to the solar collector for re-heating, forming a cycle, ensuring that the water temperature in the water tank remains at a high level, improving the utilization rate of solar energy, and ensuring the temperature stability of the hot water, improving the user experience.

[0045] The heated hot water has a smaller density and will naturally rise. The first water inlet end 31 is arranged at the top of the first water tank 3, so that the heated hot water can directly enter the upper part of the first water tank 3, avoiding direct mixing of hot water and cold water and reducing heat loss. The unheated cold water has a larger density and will naturally sink. The second water inlet end 33 is arranged at the bottom of the first water tank 3, so that the cold water can directly enter the lower part of the first water tank 3 and mix with the cold water at the bottom, forming natural convection.

[0046] The above-mentioned "coupling the first water tank 3 with the solar collector 1 to exchange heat energy" can be understood as combining the first water tank 3 with the solar collector 1, circulating and heating the water in the first water tank 3, so that the solar collector 1 can continuously transfer heat to the water in the first water tank 3, ensuring that the water temperature in the water tank always remains at a high level. And ensure that the water temperature in the first water tank 3 is more uniform, avoid the phenomenon of local overheating or overcooling, improve the heating efficiency. And can make the hot water system can make full use of solar energy, reduce energy consumption.

[0047] Further, the third water outlet end 34 is located in the first water tank 3.

[0048] Further, the first water tank 3 is provided with a connecting pipe 36, one end of the connecting pipe 36 is connected with the water inlet of the solar collector 1, the other end of the connecting pipe 36 is arranged towards the bottom of the first water tank 3, the other end of the connecting pipe 36 is located at the bottom of the first water tank 3, and the other end of the connecting pipe 36 forms the third water outlet end 34.

[0049] Further, the hot water system further comprises: a second control valve 7 arranged between the third water outlet end 34 and the first circulating pump 6, the first circulating pump 6 is connected with the third water outlet end 34 through the second control valve 7; the second control valve 7 is in communication connection with the control device, and the control device is used for controlling the on-off of the second control valve 7; wherein when the water supply mode of the hot water system is the second water supply mode, the control device controls the second control valve 7 to open. With such a structure, the second control valve 7 can be flexibly controlled. When the system needs to switch from the first water supply mode to the second water supply mode, the control device can quickly respond and open the second control valve 7 to ensure smooth water flow. The arrangement of the second control valve 7 can avoid water flow errors caused by misoperation and ensure normal operation of the system in different modes.

[0050] Further, the end of the second control valve 7 away from the first circulating pump 6 is connected with the end of the connecting pipe 36 away from the bottom of the first water tank 3.

[0051] Optionally, the control device determines whether the current time is within a preset solar radiation time interval according to the obtained current time. If yes, it is determined whether the difference between the second water temperature data t2 and the first water temperature data t1 is greater than or equal to a first preset value T1; if not, it is determined whether the difference between the second water temperature data t2 and the first water temperature data t1 is less than the first preset value T1. The control device adjusts the water supply mode of the hot water system to the second water supply mode (i.e., the solar heat collection cycle mode), and at the same time, controls the first circulating pump 6 to be turned on, the second control valve 7 to be opened and the first control valve 5 to be closed, so as to make the water inlet of the solar heat collector 1 communicate with the third water outlet end 34 and disconnect the water inlet of the solar heat collector 1 from the output port of the water supply network 100. The water with a lower temperature at the bottom of the first water tank 3 is pumped out from the third water outlet end 34 through the first circulating pump 6, and the pumped-out water enters the solar heat collector 1 in sequence through the second control valve 7, the first circulating pump 6 and the water inlet of the solar heat collector 1 for heating. The heated water enters the first water tank 3 through the water outlet of the solar heat collector 1 and the first water inlet end 31, and then is transported to the second water tank 4 through the second water outlet end 32. Finally, the water with the highest temperature in the first water tank 3 is transported to the user side from the water supply end 41 of the second water tank 4.

[0052] Specifically, as shown in Figure 1 , the hot water system further comprises a third control valve 8 connected with the water outlet of the solar heat collector 1 and the first water inlet end 31 respectively. The control device is in communication connection with the third control valve 8, and controls the opening and closing of the third control valve 8. With such a structure, the third control valve 8 can effectively avoid waterway errors caused by misoperation and ensure the normal operation of the hot water system in different modes.

[0053] When the water supply mode of the hot water system is the first water supply mode (i.e., the solar direct supply user mode) or the second water supply mode (i.e., the solar heat collection cycle mode), the control device controls the third control valve 8 to be opened.

[0054] Specifically, as shown in Figure 1As shown, the hot water system further comprises: a first temperature detection member 9 arranged at the water outlet of the air energy heat pump unit 2; the first temperature detection member 9 is used to detect the third water temperature data t3 from the water outlet of the air energy heat pump unit 2; the control device is in communication connection with the first temperature detection member 9, and the control device is used to obtain the third water temperature data t3 detected by the first temperature detection member 9; wherein, when the current time is within the preset solar radiation time interval or the preset non-solar radiation time interval, and the control device is used to control the air energy heat pump unit 2 to start according to the obtained first water temperature data t1, the control device is used to adjust the water supply mode of the hot water system to the third water supply mode or the fourth water supply mode according to the obtained third water temperature data t3. With such a structure, by arranging the first temperature detection member 9, the outlet temperature of the air energy heat pump unit 2 can be detected in real time, and the control device can obtain accurate temperature information. The control device dynamically adjusts the water supply mode of the hot water system according to the obtained third water temperature data t3, ensuring the optimal operation of the system under different conditions. And the control device controls the air energy heat pump unit 2 to start or stop according to the obtained first water temperature data t1, which can more accurately control the operation of the air energy heat pump unit 2, ensure the effective use of heat energy, and improve the overall energy efficiency of the system. In addition, by monitoring the third water temperature data t3 in real time and dynamically adjusting the water supply mode of the hot water system according to the third water temperature data t3, the system can quickly respond to changes in user demand and provide high-temperature hot water in time, improving the user experience.

[0055] Specifically, as Figure 1As shown, the first water tank 3 has a second water outlet end 32, a third water outlet end 34, a second water inlet end 33 and a fourth water inlet end 35, the second water outlet end 32 is located at the top of the first water tank 3, and the second water outlet end 32 is connected with the second water tank 4; the third water outlet end 34, the second water inlet end 33 and the fourth water inlet end 35 are all located at the bottom of the first water tank 3, the third water outlet end 34 is connected with the water inlet of the air energy heat pump unit 2; the second water inlet end 33 is used to be connected with the output port of the water supply network 100; the fourth water inlet end 35 is connected with the water outlet of the air energy heat pump unit 2; the hot water system further comprises: a second circulating pump 10, the second circulating pump 10 is arranged between the third water outlet end 34 and the water inlet of the air energy heat pump unit 2, the third water outlet end 34 is connected with the water inlet of the air energy heat pump unit 2 through the second circulating pump 10; the second circulating pump 10 is in communication connection with the control device, and the control device is used to control the start and stop of the second circulating pump 10; wherein, when the control device adjusts the water supply mode of the hot water system to the third water supply mode, the control device controls the second circulating pump 10 to be started, and the water of the first water tank 3 enters into the air energy heat pump unit 2 through the second circulating pump 10 and the water inlet of the air energy heat pump unit 2 for heating, and the water heated by the air energy heat pump unit 2 enters into the first water tank 3 through the water outlet of the air energy heat pump unit 2 and the fourth water inlet end 35, so that the first water tank 3 and the air energy heat pump unit 2 are coupled in heat energy. By arranging the fourth water inlet end at the bottom of the first water tank 3, the heated hot water enters from the bottom, promotes the natural convection in the water tank, and helps the water temperature distribution to be more uniform. Moreover, the water with lower temperature in the bottom of the first water tank 3 is extracted from the third water outlet end 34, heated and then enters from the bottom of the first water tank 3, so that the natural convection circulation is formed, which helps the water temperature distribution in the first water tank 3 to be more uniform and reduces the local overheating or overcooling phenomenon.

[0056] The preset non-solar radiation time interval refers to a preset time period in which solar heat collection is weak or no solar heat source is available every day. In this preset time period, the solar heat collection effect is poor or it is not suitable to perform solar heat collection.

[0057] Optionally, the preset non-solar radiation time interval and the preset solar radiation time interval are equal to 24 hours.

[0058] Further, the hot water system further comprises: a fourth control valve 11 arranged between the fourth water inlet end 35 and the water outlet of the air energy heat pump unit 2, the water outlet of the air energy heat pump unit 2 being connected to the fourth water inlet end 35 through the fourth control valve 11; and a control device in communication connection with the fourth control valve 11, the control device being configured to control the opening and closing of the fourth control valve 11; wherein when the water supply mode of the hot water system is the third water supply mode, the control device controls the fourth control valve 11 to be opened.

[0059] Optionally, when the control device determines that the current time obtained is within the preset solar radiation time interval or within the preset non-solar radiation time interval, it is determined whether the first water temperature data t1 is less than or equal to the difference between the preset water temperature t0 in the second water tank 4 and the third preset value T3. If T3, the control device controls the air energy heat pump unit 2 to start. After the air energy heat pump unit 2 starts, the third water temperature data t3 at the water outlet of the air energy heat pump unit 2 is obtained; it is determined whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3; if T3, the control device adjusts the water supply mode of the hot water system to the third water supply mode (i.e. the heat pump circulation mode). The second circulating pump 10 is controlled to be turned on, the fourth control valve 11 is controlled to be opened, the first circulating pump 6, the first control valve 5, the second control valve 7 and the third control valve 8 are controlled to be closed, so that the water outlet of the air energy heat pump unit 2 is in communication with the fourth water inlet end 35. The water with lower temperature at the bottom of the first water tank 3 is pumped out from the third water outlet end 34 through the second circulating pump 10, and the pumped-out water enters the air energy heat pump unit 2 through the second circulating pump 10 and the water inlet of the air energy heat pump unit 2 to be heated. After being heated, the water enters the first water tank 3 through the water outlet of the air energy heat pump unit 2, the fourth control valve 11 and the fourth water inlet end 35 in sequence.

[0060] Optionally, the second circulating pump 10 is arranged in parallel with the second control valve 7 and the first circulating pump 6.

[0061] Specifically, as Figure 1As shown, the water outlet of the air energy heat pump unit 2 is connected with the third water inlet end 42 of the second water tank 4; the first water tank 3 has a second water outlet end 32, a third water outlet end 34 and a second water inlet end 33, the second water outlet end 32 is located at the top of the first water tank 3, and the second water outlet end 32 is connected with the second water tank 4; the third water outlet end 34 is located at the bottom of the first water tank 3, and the third water outlet end 34 is connected with the water inlet of the air energy heat pump unit 2; the second water inlet end 33 is used to connect with the output port of the water supply network 100; the hot water system further comprises: a fifth control valve 12 arranged between the water outlet of the air energy heat pump unit 2 and the third water inlet end 42 of the second water tank 4, the water outlet of the air energy heat pump unit 2 is connected with the third water inlet end 42 of the second water tank 4 through the fifth control valve 12; the fifth control valve 12 is in communication connection with the control device, and the control device is used to control the on-off of the fourth control valve 11; wherein, when the control device adjusts the water supply mode of the hot water system to the fourth water supply mode, the control device controls the fifth control valve 12 to open, and the water heated by the air energy heat pump unit 2 is supplied to the user side through the water outlet of the air energy heat pump unit 2 and the second water tank 4. By adopting such structural arrangement, by arranging the fifth control valve 12, the system can flexibly switch the water supply mode, and ensure the optimal operation under different conditions. The fifth control valve 12 can ensure the quick switching of the system under different modes, timely respond to the change of user's demand, and improve the response speed of the system. By the fifth control valve 12, the high-temperature water heated by the air energy heat pump unit 2 is directly sent into the second water tank 4, so as to ensure that the temperature of the hot water supplied to the user is always at a high level, and provide higher quality hot water supply. Directly sending the heated water into the second water tank 4 reduces the heat loss of the intermediate link, improves the temperature stability of the hot water, and improves the overall energy efficiency of the system. At the same time, the system can provide high-temperature hot water more quickly, and reduce the waiting time of the user.

[0062] Further, the first water inlet end 31, the second water outlet end 32, the second water inlet end 33, the third water outlet end 34 and the fourth water inlet end 35 are arranged at intervals.

[0063] Optionally, when the control device judges that the current time obtained is within the preset solar radiation time interval or within the preset non-solar radiation time interval, it is judged whether the first water temperature data t1 is less than or equal to the difference between the preset water temperature t0 in the second water tank 4 and the third preset value T3. If T3, the air energy heat pump unit 2 is controlled to start. At the same time, the third water temperature data t3 at the water outlet of the air energy heat pump unit 2 is obtained; it is judged whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3; if T3, the control device adjusts the water supply mode of the hot water system to the fourth water supply mode (i.e. the heat pump direct supply mode). And control the second circulating pump 10 to open, the fifth control valve 12 opens, control the first circulating pump 6, the first control valve 5, the second control valve 7, the third control valve 8 and the fourth control valve 11 close, make the water outlet of the air energy heat pump unit 2 and the third water inlet end 42 of the second water tank 4 communicate, through the second circulating pump 10, the water with lower temperature in the bottom of the first water tank 3 is pumped out from the third water outlet end 34, the pumped-out water enters the air energy heat pump unit 2 through the water inlet of the air energy heat pump unit 2 to be heated, after heating, the water enters the second water tank 4 through the water outlet of the air energy heat pump unit 2, the fifth control valve 12 and the third water inlet end 42 of the second water tank 4 in turn, and finally flows to the user side through the water supply end 41 of the second water tank 4.

[0064] Specifically, as shown in Figure 1 The hot water system further comprises a sixth control valve 13, the sixth control valve 13 is arranged between the second water inlet end 33 and the output port of the water supply pipe network 100, and the second water inlet end 33 is connected with the output port of the water supply pipe network 100 through the sixth control valve 13; the control device is in communication connection with the sixth control valve 13, and the control device is used for controlling the opening and closing of the sixth control valve 13.

[0065] Further, the sixth control valve 13 is arranged in parallel with the first control valve 5.

[0066] Optionally, the sixth control valve 13 is in an open state by default, and when the water supply mode of the hot water system is the first water supply mode (i.e. the solar energy direct supply user mode) or the fifth water supply mode (i.e. the solar energy and heat pump mixed mode), the control device controls the sixth control valve 13 to be closed.

[0067] Specifically, as shown in Figure 1As shown, the hot water system further comprises: a second temperature detecting member 14, which is arranged at the output port of the water supply network 100 and is configured to detect fourth water temperature data t4 at the output port of the water supply network 100; the second temperature detecting member 14 is in communication connection with the control device, and the control device is configured to acquire the fourth water temperature data t4 detected by the second temperature detecting member 14; wherein when the current time is within the preset non-solar radiation time interval, the control device compares the acquired second water temperature data t2 with the first water temperature data t1 and the fourth water temperature data t4 respectively; and according to the comparison result, it is judged whether to adjust the water supply mode of the hot water system to the fifth water supply mode; if the control device adjusts the water supply mode of the hot water system to the fifth water supply mode, the solar collector 1 and the air source heat pump unit 2 are coupled in heat. With such a structure, the air source heat pump unit 2 can use the water heated by the solar collector 1 to heat, thereby reducing the heating energy consumption of the air source heat pump unit 2 and improving the overall energy efficiency of the system.

[0068] Optionally, when the control device judges that the acquired current time is within the preset non-solar radiation time interval, the fourth water temperature data t4 detected by the second temperature detecting member 14 is acquired, and it is judged whether the second water temperature data t2 is greater than the fourth water temperature data t4 and whether the second water temperature data t2 is less than the first water temperature data t1. , and , the control device adjusts the water supply mode of the hot water system to the fifth water supply mode (i.e. the solar and heat pump mixed mode). At the same time, the sixth control valve 13 and the second control valve 7 are controlled to be closed, the first control valve 5, the third control valve 8 and the fifth control valve 12 are controlled to be opened, the second circulating pump 10 is controlled to be turned on, and the air source heat pump unit 2 is controlled to be started.

[0069] Then, the water output from the output port of the water supply network 100 enters the solar collector 1 through the first control valve 5 and the water inlet of the solar collector 1 in turn to be heated, and then the heated water enters the first water tank 3 through the water outlet of the solar collector 1 and the first water inlet 31. At the same time, the water in the first water tank 3 is pumped out from the third water outlet 34 by the second circulating pump 10, and the pumped-out water enters the air source heat pump unit 2 through the second circulating pump 10 and the water inlet of the air source heat pump unit 2 to be heated, and the heated water of the air source heat pump unit 2 enters the second water tank 4 through the water outlet of the air source heat pump unit 2, the fifth control valve 12 and the third water inlet 42 of the second water tank 4 in turn, and finally flows to the user side through the water supply end 41 of the second water tank 4.

[0070] Specifically, the hot water system further comprises a timing device, configured to time according to a preset solar irradiation time interval and a preset non-solar irradiation time interval; and a control device, which is in communication connection with the timing device and is configured to acquire current time information of the timing device. With such a structure, the timing device can be used to control the timing according to the preset solar irradiation time interval and non-solar irradiation time interval, which helps to utilize solar energy at the best time and improve the energy utilization efficiency of the hot water system. In addition, the control device is in communication connection with the timing device, so that the current time information of the timing device can be acquired. With the time information, the working state of the hot water system can be automatically controlled according to the preset time interval, which helps to realize intelligent management of the hot water system and improve the operation efficiency and energy utilization rate of the system.

[0071] Specifically, as shown in Figure 1 the hot water system further comprises a third temperature detection member 16, which is arranged in the first water tank 3 and is configured to detect first water temperature data t1 of the first water tank 3; and the third temperature detection member 16 is connected with the control device and is configured to transmit the detected first water temperature data t1 to the control device.

[0072] Specifically, the hot water system further comprises a fourth temperature detection member 17, which is arranged in the solar collector 1 and is configured to detect second water temperature data t2 of the solar collector 1; and the fourth temperature detection member 17 is connected with the control device and is configured to transmit the detected second water temperature data t2 to the control device.

[0073] Optionally, the first temperature detection member 9 is a first temperature sensor; the second temperature detection member 14 is a second temperature sensor; the third temperature detection member 16 is a third temperature sensor; and the fourth temperature detection member 17 is a fourth temperature sensor.

[0074] Specifically, the hot water system further comprises a fifth temperature detection member, which is arranged at a water inlet of the air energy heat pump unit 2 and is configured to detect fifth water temperature data t5 at the water inlet of the air energy heat pump unit 2.

[0075] Optionally, the fifth temperature detection member is a fifth temperature sensor.

[0076] Specifically, the hot water system further comprises a sixth temperature detection member 15, which is arranged in the second water tank 4 and is configured to detect sixth water temperature data t6 in the second water tank 4; and the control device is in communication connection with the sixth temperature detection member 15 and is configured to acquire the sixth water temperature data t6 and determine whether the water temperature in the second water tank 4 reaches a preset water temperature t0.

[0077] Optionally, the sixth temperature detecting member 15 is a sixth temperature sensor.

[0078] The preset water temperature t0 in the second water tank 4 can be understood as a preset target temperature of hot water in the second water tank 4.

[0079] Optionally, the first temperature detecting member 9, the second temperature detecting member 14, the third temperature detecting member 16, the fourth temperature detecting member 17, the fifth temperature detecting member and the sixth temperature detecting member 15 can all monitor the corresponding water temperature data in real time and send the detected corresponding water temperature data to the control device, and the control device can judge in real time according to the obtained corresponding water temperature data and timely adjust the water supply mode of the hot water system according to the judgment result.

[0080] The present application provides a control method applied to the hot water system of the above-mentioned embodiments, as shown in the figure, the control method comprises: Figure 2

[0081] S11, obtaining current time information, first water temperature data t1 of the first water tank 3 and second water temperature data t2 of the solar collector 1.

[0082] S12, adaptively adjusting the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2.

[0083] By adopting such a control method, through obtaining the current time information, the first water temperature data t1 of the first water tank 3 and the second water temperature data t2 of the solar collector 1, the water supply mode of the hot water system can be intelligently judged and self-adaptively adjusted according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2, so as to switch the heat supply mode under different conditions, so as to fully utilize the hot water in the solar collector close to the demand temperature, improve the energy utilization efficiency of the whole system. At the same time, by self-adaptively adjusting the water supply mode, the hot water supply can be optimized according to the actual heat demand and environmental conditions, and the user experience is improved. And combining and intelligently linking the air source heat pump unit 2 and the solar collector 1, the energy-saving advantage of solar energy and the comfort of the hot water system can be fully utilized. In addition, by adjusting the water supply mode of the hot water system according to the obtained current time, the clean solar energy source can be fully utilized. The control method of the present application can effectively solve the technical problems that the solar energy and air energy combined heat supply system in the prior art cannot fully utilize the hot water in the solar collector close to the demand temperature, thereby reducing the operation efficiency of the system and the user experience.​

[0084] Specifically, the method for adaptively adjusting the water supply mode of the hot water system according to the acquired current time information and the acquired first water temperature data t1 and / or the acquired second water temperature data t2 comprises: if the current time is located in the preset solar radiation time interval, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is greater than or equal to a first preset value T1; if , adjusting the water supply mode of the hot water system to the second water supply mode to enable the first water tank 3 to be coupled with the solar collector 1 for heat energy; if , determining whether the second water temperature data t2 is greater than or equal to the first water temperature data t1 to adjust the water supply mode of the hot water system according to the determination result. By using such a control method, the system can preferentially use the solar collector 1 to heat cold water during a period of sufficient solar energy, reduce the dependence on air energy heat pumps, maximize the use of solar energy resources, and thus significantly reduce the operation cost and energy consumption of the system.

[0085] The first preset value T1 is a correction value to prevent the equipment from frequently starting and stopping. The first preset value T1 can be adjusted according to actual conditions.

[0086] Optionally, the first preset value T1 is 6℃.

[0087] Specifically, the control method further comprises: during the process in which the hot water system supplies water to the user side in the second water supply mode, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is less than or equal to a second preset value T2; if , the hot water system will stop the current second water supply mode; wherein T1>T2. By using such a control method, unnecessary heating operations can be avoided, the system can provide high-temperature hot water faster when needed, the waiting time of the user can be reduced, and energy waste can be effectively reduced.

[0088] The second preset value T2 is a correction value to prevent the equipment from frequently starting and stopping. The second preset value T2 can be adjusted according to actual conditions.

[0089] Optionally, the second preset value T2 is 2℃.

[0090] Further, if , the method for determining whether the second water temperature data t2 is greater than or equal to the first water temperature data t1 to adjust the water supply mode of the hot water system according to the determination result comprises: if , adjusting the water supply mode of the hot water system to the first water supply mode to enable the solar collector 1 to heat the water delivered by the water supply pipe network 100 and supply the water to the user side through at least two water tanks; if , determine whether the first water temperature data t1 is less than or equal to the difference between the preset water temperature t0 in the second water tank 4 and the third preset value T3; and control whether the air energy heat pump unit 2 is started according to the determination result. By using such a control method and the method of dynamically adjusting the water supply mode, the energy utilization efficiency of the hot water system can be improved, energy consumption can be reduced, and the temperature and stability of the user's water can be ensured.

[0091] wherein the third preset value T3 is a correction value to prevent frequent start and stop of the equipment. The third preset value T3 is set according to the design of the air energy heat pump unit 2.

[0092] Optionally, the third preset value T3 is 5℃.

[0093] Specifically, the method of controlling whether the air energy heat pump unit 2 is started according to the determination result includes: T3, controlling the air energy heat pump unit 2 to start; after the air energy heat pump unit 2 starts, obtaining third water temperature data t3 at the water outlet of the air energy heat pump unit 2; determining whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3; if T3, adjusting the water supply mode of the hot water system to the third water supply mode to couple the first water tank 3 and the air energy heat pump unit 2 in heat energy; and if T3, adjusting the water supply mode of the hot water system to the fourth water supply mode to directly supply the user side with water heated by the air energy heat pump unit 2.

[0094] Further, if T3, the hot water system continues to maintain the first water supply mode.

[0095] Specifically, the control method further includes: after the air energy heat pump unit 2 starts, determining whether the first water temperature data t1 is greater than or equal to the preset water temperature t0 in the second water tank 4, and whether the fifth water temperature data t5 at the water inlet of the air energy heat pump unit 2 is greater than or equal to the preset water temperature t0; if , and , controlling the air energy heat pump unit 2 to stop. By using such a control method, the operation of the heat pump unit can be stopped in time to avoid excessive heating and waste of energy. The user side can obtain a stable hot water temperature as expected to improve the user experience.

[0096] Specifically, the method of adaptively adjusting the water supply mode of the hot water system according to the acquired current time information and the acquired first water temperature data t1 and / or the acquired second water temperature data t2 further comprises: if the current time is located in the preset non-solar radiation time interval, acquiring fourth water temperature data t4 at the output port of the water supply network 100; determining whether the second water temperature data t2 is greater than the fourth water temperature data t4 and whether the second water temperature data t2 is less than the first water temperature data t1; if , and , adjusting the water supply mode of the hot water system to a fifth water supply mode to enable the solar collector 1 and the air source heat pump unit 2 to be coupled in heat energy; if , adjusting the water supply mode of the hot water system to a third water supply mode or a fourth water supply mode; wherein, if the water supply mode of the hot water system is the third water supply mode, the first water tank 3 and the air source heat pump unit 2 are coupled in heat energy; if the water supply mode of the hot water system is the fourth water supply mode, the air source heat pump unit 2 directly supplies the user side with water after heating. By using such a control method, the air source heat pump unit 2 can preferentially use the solar medium-temperature water, reduce the heating energy consumption of the air source heat pump unit 2, and improve the overall energy efficiency of the system.

[0097] Optionally, the specific steps of the control method of the solar and air coupled hot water system are as follows:

[0098] Step 1: acquiring current time information, first water temperature data t1 of the first water tank 3, and second water temperature data t2 of the solar collector 1.

[0099] Step 2: if the current time is located in the preset solar radiation time interval, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is greater than or equal to a first preset value T1; if t2-t1≥T1, adjusting the water supply mode of the hot water system to a second water supply mode (i.e., a solar heat collection cycle mode). At this time, the control device controls the first circulating pump 6 to be turned on, the second control valve 7 to be opened, and the third control valve 8 to be opened, so as to enable the water inlet of the solar collector 1 to be communicated with the third water outlet end 34. The water with a lower temperature at the bottom of the first water tank 3 is pumped out from the third water outlet end 34 by the first circulating pump 6. The pumped-out water enters the solar collector 1 in sequence through the second control valve 7, the first circulating pump 6, and the water inlet of the solar collector 1 to be heated. The heated water enters the first water tank 3 through the water outlet of the solar collector 1 and the first water inlet end 31, and then is transported to the second water tank 4 through the second water outlet end 32. Finally, the water with the highest temperature in the first water tank 3 is transported to the user side from the water supply end 41 of the second water tank 4.

[0100] If t2-t1≤T2, the hot water system will stop the current second water supply mode; wherein T1>T2. The first circulating pump 6 is stopped, and the second control valve 7 is closed. The hot water system adaptively switches the water supply mode of the hot water system to other water supply modes according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2.

[0101] Step 3, if t2-t1<T1, it is judged whether the second water temperature data t2 is greater than or equal to the first water temperature data t1. If t2≥t1, the water supply mode of the hot water system is adjusted to the first water supply mode (i.e. the solar direct supply user mode). At this time, the control device controls the first circulating pump 6 to stop, and the second control valve 7 and the sixth control valve 13 are closed, and the first control valve 5 and the third control valve 8 are opened. The water inlet of the solar collector 1 is communicated with the output of the water supply network 100, and the water output from the output of the water supply network 100 enters the solar collector 1 through the first control valve 5 and the water inlet of the solar collector 1 in turn, is heated in the solar collector 1, and then the heated water enters the first water tank 3 through the water outlet of the solar collector 1, the third control valve 8 and the first water inlet end 31, and then is transported to the second water tank 4 through the second water outlet end 32. Finally, the heated water is transported to the user side from the water supply end 41 of the second water tank 4.

[0102] Step 4, if t2<t1, it is judged whether the first water temperature data t1 is less than or equal to the difference between the preset water temperature t0 in the second water tank 4 and the third preset value T3; if t1≤t0-T3, the air energy heat pump unit 2 is controlled to start; after the air energy heat pump unit 2 starts, the third water temperature data t3 at the water outlet of the air energy heat pump unit 2 is obtained; it is judged whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3; if t3≤t0-T3, the water supply mode of the hot water system is adjusted to the third water supply mode (i.e. the heat pump circulation mode). At this time, the control device controls the first circulating pump 6 to stop, and the first control valve 5, the second control valve 7 and the third control valve 8 are closed, and at the same time, the second circulating pump 10 is controlled to start, and the fourth control valve 11 and the sixth control valve 13 are opened, so that the water outlet of the air energy heat pump unit 2 is communicated with the fourth water inlet end 35. The water with lower temperature at the bottom of the first water tank 3 is pumped out from the third water outlet end 34 through the second circulating pump 10, and then enters the air energy heat pump unit 2 through the second circulating pump 10 and the water inlet of the air energy heat pump unit 2 to be heated, and then enters the first water tank 3 through the water outlet of the air energy heat pump unit 2, the fourth control valve 11 and the fourth water inlet end 35.

[0103] The second circulating pump 10 is arranged in parallel with the second control valve 7 and the first circulating pump 6.

[0104] Step 5: If t3>t0-T3, the water supply mode of the hot water system is adjusted to the fourth water supply mode (i.e. the heat pump direct supply mode), at this time, the control device controls the fourth control valve 11 to be closed, the second circulating pump 10 to be opened, the fifth control valve 12 and the sixth control valve 13 to be opened, so that the water outlet of the air energy heat pump unit 2 is in communication with the third water inlet end 42 of the second water tank 4, and the water with lower temperature at the bottom of the first water tank 3 is pumped out from the third water outlet end 34 through the second circulating pump 10, the pumped-out water enters the air energy heat pump unit 2 through the water inlet of the air energy heat pump unit 2 for heating, and after heating, the water sequentially passes through the water outlet of the air energy heat pump unit 2, the fifth control valve 12 and the third water inlet end 42 of the second water tank 4 to enter the second water tank 4, and finally the water in the second water tank 4 flows to the user side through the water supply end 41 of the second water tank 4.

[0105] Wherein, after the air energy heat pump unit 2 is started, it is judged whether the first water temperature data t1 is greater than or equal to the preset water temperature t0 in the second water tank 4, and whether the fifth water temperature data t5 at the water inlet of the air energy heat pump unit 2 is greater than or equal to the preset water temperature t0; if t1≥t0 and t5≥t0, the air energy heat pump unit 2 is controlled to be turned off. The control device closes the fourth control valve 11 and the fifth control valve 12, and stops the second circulating pump 10. The hot water system is in standby state.

[0106] Step 6, if the current time is located in the non-solar energy irradiation time interval, fourth water temperature data t4 at the output of the water supply network 100 is acquired; whether the second water temperature data t2 is greater than the fourth water temperature data t4 and whether the second water temperature data t2 is less than the first water temperature data t1 is judged; if t2>t4 and t2<t1, the water supply mode of the hot water system is adjusted to the fifth water supply mode. At this time, the control device controls the sixth control valve 13, the second control valve 7 and the fourth control valve 11 to be closed and the first circulating pump 6 to be stopped. And controls the first control valve 5, the third control valve 8 and the fifth control valve 12 to be opened, and the second circulating pump 10 to be started. The water output by the output of the water supply network 100 is sequentially passed through the first control valve 5 and the water inlet of the solar energy collector 1 to enter the solar energy collector 1 to be heated, and then the heated water is passed through the water outlet of the solar energy collector 1, the third control valve 8 and the first water inlet end 31 to enter the first water tank 3. At the same time, the water in the first water tank 3 is pumped out from the third water outlet end 34 by the second circulating pump 10, and the pumped-out water is passed through the second circulating pump 10 and the water inlet of the air energy heat pump unit 2 to enter the air energy heat pump unit 2 to be heated, and the heated water of the air energy heat pump unit 2 is sequentially passed through the water outlet of the air energy heat pump unit 2, the fifth control valve 12 and the third water inlet end 42 of the second water tank 4 to enter the second water tank 4, and finally the water in the second water tank 4 is flowed to the user side through the water supply end 41 of the second water tank 4.

[0107] Step 7, if t2≤t4, the air energy heat pump unit 2 is controlled to be started, and third water temperature data t3 at the water outlet of the air energy heat pump unit 2 is acquired; whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and the third preset value T3 is judged, and the water supply mode of the hot water system is adjusted to the third water supply mode or the fourth water supply mode according to the judgment result.

[0108] The application provides an electronic device, comprising: a processor and a memory connected to the processor; the memory is used for storing a computer program; the processor is used for calling and executing the computer program in the memory to execute the control method of the above-mentioned embodiment.

[0109] It should be noted that the terms "first", "second" and the like in the specification and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0110] Optionally, the specific examples in the embodiments can refer to the examples described in the above embodiments, and the embodiments will not be described here again.

[0111] The serial numbers of the above embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0112] In the above embodiments of the present application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0113] The above is only the preferred embodiment of the present application, and it should be noted that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A solar and air energy coupled hot water system, characterized in that, The hot water system comprises: a solar heat collector (1) and an air energy heat pump unit (2), a water inlet of the solar heat collector (1) is connected with an outlet of a water supply network (100); at least two water tanks, the at least two water tanks are sequentially connected in series, a first water tank (3) in the at least two water tanks is respectively connected with the solar heat collector (1) and the air energy heat pump unit (2); a water supply end (41) of a second water tank (4) in the at least two water tanks is used for being connected with a user side; a control device, used for acquiring current time information, first water temperature data t1 of the first water tank (3) and second water temperature data t2 of the solar heat collector (1), and adaptively adjusting a water supply mode of the hot water system according to the acquired current time information and the acquired first water temperature data t1 and / or the acquired second water temperature data t2; a second temperature detection member (14), the second temperature detection member (14) is arranged at the outlet of the water supply network (100), the second temperature detection member (14) is used for detecting fourth water temperature data t4 at the outlet of the water supply network (100); the second temperature detection member (14) is in communication connection with the control device, and the control device is used for acquiring the fourth water temperature data t4 detected by the second temperature detection member (14); wherein, when the current time is in a preset non-solar energy irradiation time interval, the control device compares the acquired second water temperature data t2 with the first water temperature data t1 and the fourth water temperature data t4 respectively; according to the comparison result, it is judged whether the water supply mode of the hot water system is adjusted to a fifth water supply mode; if the control device adjusts the water supply mode of the hot water system to the fifth water supply mode, the solar heat collector (1) and the air energy heat pump unit (2) are coupled in heat energy, and the air energy heat pump unit (2) uses the water heated by the solar heat collector (1) to heat.

2. The hot water system according to claim 1, wherein the first water tank (3) has a first water inlet end (31) and a second water outlet end (32); the first water inlet end (31) is connected with a water outlet of the solar heat collector (1); the second water outlet end (32) is connected with the second water tank (4); the hot water system further comprises: a first control valve (5) arranged between a water inlet of the solar heat collector (1) and an outlet of a water supply network (100), the water inlet of the solar heat collector (1) is connected with the outlet of the water supply network (100) through the first control valve (5); the first control valve (5) is in communication connection with the control device, and the control device is used for controlling on-off of the first control valve (5). When the current time is within the preset solar radiation time interval and the control device adjusts the water supply mode of the hot water system to the first water supply mode, the control device controls the first control valve (5) to open, and the solar collector (1) heats the water delivered by the water supply network (100) and supplies it to the user side through at least two water tanks.

3. The hot water system of claim 1, wherein, The first water tank (3) has a first water inlet end (31), a second water inlet end (33), a second water outlet end (32), and a third water outlet end (34), and the first water inlet end (31) and the second water outlet end (32) are located at the top of the first water tank (3), and the second water inlet end (33) and the third water outlet end (34) are located at the bottom of the first water tank (3); the first water inlet end (31) is connected with the water outlet of the solar collector (1); the second water inlet end (33) is connected with the output port of the water supply network (100); the second water outlet end (32) is connected with the second water tank (4); the third water outlet end (34) is connected with the water inlet of the solar collector (1); the hot water system further comprises: A first circulating pump (6) is arranged between the third water outlet end (34) and the water inlet of the solar collector (1), and the first circulating pump (6) is connected with the third water outlet end (34) and the water inlet of the solar collector (1) respectively; the first circulating pump (6) is in communication connection with the control device, and the control device is used for controlling the start and stop of the first circulating pump (6); When the current time is within the preset solar radiation time interval and the control device adjusts the water supply mode of the hot water system to the second water supply mode, the control device controls the first circulating pump (6) to start; the water in the first water tank (3) is heated in the solar collector (1) through the first circulating pump (6) and the water inlet of the solar collector (1), so that the first water tank (3) and the solar collector (1) are coupled in thermal energy.

4. The hot water system of claim 3, wherein The hot water system further comprises: A second control valve (7) is arranged between the third water outlet end (34) and the first circulating pump (6), and the first circulating pump (6) is connected with the third water outlet end (34) through the second control valve (7); the second control valve (7) is in communication connection with the control device, and the control device is used for controlling the on-off of the second control valve (7); When the water supply mode of the hot water system is the second water supply mode, the control device controls the second control valve (7) to open.

5. A hot water system as claimed in claim 2 or 4 wherein, The hot water system further comprises: a third control valve (8), the third control valve (8) is connected with the water outlet of the solar collector (1) and the first water inlet end (31) respectively; the control device is in communication connection with the third control valve (8), and the control device is used for controlling the on-off of the third control valve (8).

6. The hot water system of claim 1, wherein, The hot water system further comprises: A first temperature detection member (9) is arranged at the water outlet of the air energy heat pump unit (2); the first temperature detection member (9) is used to detect third water temperature data t3 from the water outlet of the air energy heat pump unit (2); the control device is in communication connection with the first temperature detection member (9), and the control device is used to acquire the third water temperature data t3 detected by the first temperature detection member (9); When the current time is in a preset solar radiation time interval or a preset non-solar radiation time interval, and the control device controls the air energy heat pump unit (2) to start according to the acquired first water temperature data t1, the control device adjusts the water supply mode of the hot water system to the third water supply mode or the fourth water supply mode according to the acquired third water temperature data t3.

7. The hot water system of claim 6, wherein The first water tank (3) has a second water outlet end (32), a third water outlet end (34), a second water inlet end (33) and a fourth water inlet end (35), the second water outlet end (32) is located at the top of the first water tank (3), and the second water outlet end (32) is connected with the second water tank (4); the third water outlet end (34), the second water inlet end (33) and the fourth water inlet end (35) are all located at the bottom of the first water tank (3), the third water outlet end (34) is connected with the water inlet of the air energy heat pump unit (2); the second water inlet end (33) is used to be connected with the output port of the water supply network (100); the fourth water inlet end (35) is connected with the water outlet of the air energy heat pump unit (2); the hot water system further comprises: A second circulating pump (10) is arranged between the third water outlet end (34) and the water inlet of the air energy heat pump unit (2), the third water outlet end (34) is connected with the water inlet of the air energy heat pump unit (2) through the second circulating pump (10); the second circulating pump (10) is in communication connection with the control device, and the control device is used to control the start and stop of the second circulating pump (10); When the control device adjusts the water supply mode of the hot water system to the third water supply mode, the control device controls the second circulating pump (10) to start, the water in the first water tank (3) enters the air energy heat pump unit (2) through the second circulating pump (10) and the water inlet of the air energy heat pump unit (2) to be heated, and the water heated by the air energy heat pump unit (2) enters the first water tank (3) through the water outlet of the air energy heat pump unit (2) and the fourth water inlet end (35), so that the first water tank (3) and the air energy heat pump unit (2) are coupled in heat.

8. The hot water system of claim 7, wherein, The hot water system further comprises: a fourth control valve (11) arranged between the fourth water inlet end (35) and a water outlet of the air energy heat pump unit (2), the water outlet of the air energy heat pump unit (2) being connected with the fourth water inlet end (35) through the fourth control valve (11); the control device is in communication connection with the fourth control valve (11), and the control device is used for controlling the on-off of the fourth control valve (11); When the water supply mode of the hot water system is the third water supply mode, the control device controls the fourth control valve (11) to open.

9. The hot water system of claim 6, wherein, The water outlet of the air energy heat pump unit (2) is connected with a third water inlet end (42) of the second water tank (4); the first water tank (3) has a second water outlet end (32), a third water outlet end (34) and a second water inlet end (33), the second water outlet end (32) is located at the top of the first water tank (3), and the second water outlet end (32) is connected with the second water tank (4); the third water outlet end (34) is located at the bottom of the first water tank (3), and the third water outlet end (34) is connected with a water inlet of the air energy heat pump unit (2); the second water inlet end (33) is used for being connected with an output port of a water supply network (100); the hot water system further comprises: A fifth control valve (12) is arranged between the water outlet of the air energy heat pump unit (2) and the third water inlet end (42) of the second water tank (4), and the water outlet of the air energy heat pump unit (2) is connected with the third water inlet end (42) of the second water tank (4) through the fifth control valve (12); the fifth control valve (12) is in communication connection with the control device, and the control device is used for controlling the on-off of the fourth control valve (11); When the control device adjusts the water supply mode of the hot water system to the fourth water supply mode, the control device controls the fifth control valve (12) to open, and the water heated by the air energy heat pump unit (2) is supplied to the user side through the water outlet of the air energy heat pump unit (2) and the second water tank (4).

10. A hot water system as claimed in claim 3 or 7 or 9 wherein, The hot water system further comprises: a sixth control valve (13) arranged between the second water inlet end (33) and the output port of the water supply network (100), the second water inlet end (33) being connected with the output port of the water supply network (100) through the sixth control valve (13); the control device is in communication connection with the sixth control valve (13), and the control device is used for controlling the on-off of the sixth control valve (13).

11. The hot water system of claim 1, wherein, The hot water system further comprises: A timing device is used for timing according to a preset solar irradiation time interval and a preset non-solar irradiation time interval; a control device is in communication connection with the timing device, and the control device is used for acquiring current time information of the timing device; and / or, a third temperature detecting member (16) disposed in the first water tank (3); the third temperature detecting member (16) is used to detect first water temperature data t1 of the first water tank (3); the third temperature detecting member (16) is connected with the control device to deliver the detected first water temperature data t1 to the control device; and / or, a fourth temperature detecting member (17) disposed in the solar collector (1); the fourth temperature detecting member (17) is used to detect second water temperature data t2 of the solar collector (1); the fourth temperature detecting member (17) is connected with the control device to deliver the detected second water temperature data t2 to the control device.

12. A control method characterized by, The control method is applied to the hot water system of any one of claims 1 to 11, and the control method comprises: obtaining current time information, first water temperature data t1 of the first water tank (3) and second water temperature data t2 of the solar collector (1); adaptively adjusting the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2.

13. The control method according to claim 12, characterized by, The method of adaptively adjusting the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2 comprises: if the current time is located in a preset solar radiation time interval, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is greater than or equal to a first preset value T1; If , the water supply mode of the hot water system is adjusted to a second water supply mode to enable the first water tank (3) to be coupled to the solar collector (1) for thermal energy. If , it is determined whether the second water temperature data t2 is greater than or equal to the first water temperature data t1, to adjust the water supply mode of the hot water system according to the determination result.

14. The control method according to claim 13, characterized by, The control method further comprises: during the process of the hot water system supplying water to the user side in the second water supply mode, determining whether the difference between the second water temperature data t2 and the first water temperature data t1 is less than or equal to a second preset value T2; If then the hot water system will stop the current second water supply mode; wherein T1>T2.

15. The control method according to claim 13, characterized by, The if , judging whether the second water temperature data t2 is greater than or equal to the first water temperature data t1, and adjusting the water supply mode of the hot water system according to the judgment result. If , the water supply mode of the hot water system is adjusted to a first water supply mode, so that the solar collector (1) heats the water delivered by the water supply network (100) and supplies it to the user side through at least two water tanks; If , it is determined whether the first water temperature data t1 is less than or equal to the difference between the preset water temperature t0 in the second water tank (4) and the third preset value T3. controlling whether the air energy heat pump unit (2) is started according to the determination result.

16. The control method according to claim 15, characterized by The method of controlling whether the air energy heat pump unit (2) is started according to the determination result comprises: If T3, control the air energy heat pump unit (2) to start; after the air energy heat pump unit (2) is started, obtaining third water temperature data t3 at the water outlet of the air energy heat pump unit (2); determining whether the third water temperature data t3 is less than or equal to the difference between the preset water temperature t0 and a third preset value T3; If T3, adjust the water supply mode of the hot water system to a third water supply mode, so that the first water tank (3) and the air energy heat pump unit (2) are coupled in heat energy. If T3, adjust the water supply mode of the hot water system to a fourth water supply mode, so that the air energy heat pump unit (2) directly supplies the user side after heating the water.

17. The control method according to claim 16, characterized by, The control method further comprises: after the air energy heat pump unit (2) is started, determining whether the first water temperature data t1 is greater than or equal to a preset water temperature t0 in the second water tank (4) and whether fifth water temperature data t5 at the water inlet of the air energy heat pump unit (2) is greater than or equal to the preset water temperature t0; If , and , the air energy heat pump unit (2) is controlled to shut down.

18. The control method according to claim 12, wherein The method of adaptively adjusting the water supply mode of the hot water system according to the obtained current time information and the obtained first water temperature data t1 and / or the obtained second water temperature data t2 further comprises: if the current time is located in a preset non-solar radiation time interval, obtaining fourth water temperature data t4 at the output port of the water supply pipe network (100); determining whether the second water temperature data t2 is greater than the fourth water temperature data t4 and whether the second water temperature data t2 is less than the first water temperature data t1; If , and , the water supply mode of the hot water system is adjusted to a fifth water supply mode to make the solar heat collector (1) and the air energy heat pump unit (2) coupled in thermal energy. If , adjust the water supply mode of the hot water system to a third water supply mode or a fourth water supply mode; wherein, if the water supply mode of the hot water system is the third water supply mode, the first water tank (3) and the air energy heat pump unit (2) are coupled in heat energy; if the water supply mode of the hot water system is the fourth water supply mode, the air energy heat pump unit (2) directly supplies the user side after heating water.

19. An electronic device, comprising: comprising: a processor, and a memory connected to the processor; the memory is used to store a computer program; the processor is used to call and execute the computer program in the memory to execute the control method in any one of claims 12 to 18.

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