Solar energy and heat source heat pump combined heat supply system

Abstract

The utility model discloses a solar energy and heat source heat pump combined heat supply system which comprises a water supply pipeline, a solar heat collection mechanism, a heat storage water tank, a low-temperature heat pump mechanism, a domestic hot water supply pipeline, a low-temperature hot water conveying pipeline, a high-temperature heat supply water tank, a high-temperature heat pump mechanism and a high-temperature water outlet heat supply pipeline. The solar heat collection mechanism is connected with the heat storage water tank, the low-temperature heat pump mechanism is connected with the heat storage water tank, the domestic hot water supply pipeline is connected with a first hot water outlet in the bottom end of the heat storage water tank, and the low-temperature hot water conveying pipeline is arranged between the heat storage water tank and the high-temperature heating water tank. One end of the high-temperature water outlet heating pipeline is connected with a high-temperature hot water outlet of the high-temperature heating water tank, and the other end of the high-temperature water outlet heating pipeline is connected with a water segregator of the floor heating system. The heating system not only provides domestic hot water for users, but also provides high-temperature hot water for the users, and is particularly suitable for heating in late winter environments.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, and in particular to a heating system that combines solar energy and a heat pump. Background Technology

[0002] The heating load of residential buildings mainly includes domestic hot water load and heating load. With the improvement of living standards, people's demand for domestic hot water and heating will inevitably increase, which will put great pressure on the achievement of building energy conservation goals.

[0003] In residential buildings, solar collectors are generally used to produce hot water. These collectors can produce a sufficient amount of hot water to provide domestic hot water to users. Excess heat is stored for heating after meeting the domestic hot water supply needs. However, existing heating methods have the following shortcomings:

[0004] 1) The method of using solar collectors alone to heat and produce hot water is easily limited by factors such as location and outdoor environment. For example, when the weather is bad, relying solely on solar collectors to heat the hot water storage tank cannot meet the user's domestic hot water needs.

[0005] 2) Solar radiation is unstable, and relying solely on solar energy for heating may not meet the heating needs in winter. Utility Model Content

[0006] To address the problems existing in the prior art, the technical problem to be solved by this utility model is to provide a heating system that combines a low-temperature air source heat pump with a solar collector. When the solar collector cannot provide sufficient heat, the low-temperature air source heat pump can supplement the heating of the water in the hot water storage tank, ensuring a normal supply of domestic hot water, improving energy efficiency, protecting the environment, and delivering the low-temperature hot water obtained after heating by the low-temperature air source heat pump to a high-temperature heating water tank through a low-temperature hot water delivery pipeline. The high-temperature air source heat pump then heats the low-temperature hot water in the high-temperature heating water tank into high-temperature hot water, thus meeting the heating needs of users.

[0007] To address the aforementioned technical problems, this utility model provides a combined solar energy and heat pump heating system. The heating system includes a water supply pipeline, a solar collector, a hot water storage tank, a low-temperature heat pump mechanism, a domestic hot water supply pipeline, a low-temperature hot water delivery pipeline, a high-temperature heating tank, a high-temperature heat pump mechanism, and a high-temperature outlet heating pipeline. The water supply pipeline is connected to the cold water inlet at the top of the hot water storage tank. The solar collector is connected to the hot water storage tank. The low-temperature heat pump mechanism is connected to the hot water storage tank. The domestic hot water supply pipeline is connected to the first hot water outlet at the bottom of the hot water storage tank. The low-temperature hot water delivery pipeline is positioned between the hot water storage tank and the high-temperature heating tank. One end of the low-temperature hot water delivery pipeline is connected to the second hot water outlet at the bottom of the hot water storage tank, and the other end is connected to the low-temperature hot water inlet of the high-temperature heating tank. The high-temperature heat pump mechanism is connected to the high-temperature heating tank. One end of the high-temperature outlet heating pipeline is connected to the high-temperature hot water outlet of the high-temperature heating tank, and the other end is connected to the manifold of the underfloor heating system.

[0008] Furthermore, the solar thermal collector includes a solar collector, a solar heating circulating water pump, a low-temperature solar water outlet pipe, and a low-temperature solar water inlet pipe. One end of the low-temperature solar water inlet pipe is connected to the cold water outlet of the hot water storage tank, and the other end of the low-temperature solar water inlet pipe is connected to the solar collector. The solar heating circulating water pump is installed on the low-temperature solar water inlet pipe. One end of the low-temperature solar water outlet pipe is connected to the solar collector, and the other end of the low-temperature solar water outlet pipe is connected to the first hot water inlet of the hot water storage tank.

[0009] Furthermore, the low-temperature heat pump mechanism includes a low-temperature air source heat pump, a first heating circulating water pump, a low-temperature heat pump outlet pipe, and a low-temperature heat pump inlet pipe. One end of the low-temperature heat pump outlet pipe is connected to the cold water outlet of the hot water storage tank, and the other end of the low-temperature heat pump outlet pipe is connected to the low-temperature air source heat pump. The first heating circulating water pump is installed on the low-temperature heat pump inlet pipe. One end of the low-temperature heat pump inlet pipe is connected to the low-temperature air source heat pump, and the other end of the low-temperature heat pump inlet pipe is connected to the low-temperature hot water inlet of the hot water storage tank.

[0010] Furthermore, the high-temperature heat pump mechanism includes a high-temperature air source heat pump, a second heating circulating water pump, a high-temperature heat pump outlet pipe, and a high-temperature heat pump inlet pipe. One end of the high-temperature heat pump outlet pipe is connected to the low-temperature hot water outlet of the high-temperature heating water tank, and the other end of the high-temperature heat pump outlet pipe is connected to the high-temperature air source heat pump. The second heating circulating water pump is installed on the high-temperature heat pump outlet pipe. One end of the high-temperature heat pump inlet pipe is connected to the high-temperature air source heat pump, and the other end of the high-temperature heat pump inlet pipe is connected to the high-temperature hot water inlet of the high-temperature heating water tank.

[0011] Furthermore, the high-temperature hot water supply pipeline includes a high-temperature hot water supply pump and a high-temperature hot water supply pipe. The high-temperature hot water supply pump is installed on the high-temperature hot water supply pipe. One end of the high-temperature hot water supply pipe is connected to the high-temperature hot water outlet of the high-temperature heating water tank, and the other end of the high-temperature hot water supply pipe is connected to the manifold of the underfloor heating system.

[0012] Furthermore, the heating system includes a low-temperature return water heating pipe, one end of which is connected to the high-temperature return water port of the high-temperature heating water tank, and the other end of which is used to connect to the water collector of the underfloor heating system.

[0013] Furthermore, the low-temperature return water heating pipeline includes a low-temperature return water pipe and a return water solenoid valve. The return water solenoid valve is installed on the low-temperature return water pipe. One end of the low-temperature return water pipe is connected to the high-temperature return water port of the high-temperature heating water tank, and the other end of the low-temperature return water pipe is connected to the water collector of the underfloor heating system.

[0014] Furthermore, the domestic hot water supply pipeline includes a low-temperature hot water supply pipe, a low-temperature hot water supply pump, and a water supply filter. One end of the low-temperature hot water supply pipe is connected to a hot water storage tank, and the other end of the low-temperature hot water supply pipe is used to connect to the user's hot water network. The low-temperature hot water supply pump is installed on the low-temperature hot water supply pipe, and the water supply filter is installed on the low-temperature hot water supply pipe and located on one side of the low-temperature hot water supply pump.

[0015] Furthermore, the low-temperature hot water delivery pipeline includes a low-temperature hot water delivery pipe, a low-temperature hot water pump, and a check valve. One end of the low-temperature hot water delivery pipe is connected to a hot water storage tank, and the other end of the low-temperature hot water delivery pipe is connected to a high-temperature heating water tank. The low-temperature hot water pump and the check valve are installed on the low-temperature hot water delivery pipe, and the check valve is located on one side of the low-temperature hot water pump.

[0016] Furthermore, the water supply pipeline includes a water supply delivery pipe, a water supply filter, and a water supply solenoid valve. The front end of the water supply delivery pipe is used to connect to the water supply network. The water supply filter is installed at the front end of the water supply delivery pipe. The rear end of the water supply delivery pipe is connected to the hot water storage tank. The water supply solenoid valve is installed on the water supply delivery pipe and located between the water supply delivery pipe and the hot water storage tank.

[0017] Compared with the prior art, the solution of this utility model has at least the following beneficial effects:

[0018] The heating system of this utility model includes a water supply pipeline, a solar collector, a hot water storage tank, a low-temperature heat pump, a domestic hot water supply pipeline, a low-temperature hot water delivery pipeline, a high-temperature heating tank, a high-temperature heat pump, and a high-temperature outlet heating pipeline. The water supply pipeline is connected to the cold water inlet at the top of the hot water storage tank. The solar collector is connected to the hot water storage tank. The low-temperature heat pump is connected to the hot water storage tank. The domestic hot water supply pipeline is connected to the first hot water outlet at the bottom of the hot water storage tank. The low-temperature hot water delivery pipeline is located between the hot water storage tank and the high-temperature heating tank. The high-temperature heat pump is connected to the high-temperature heating tank. One end of the high-temperature outlet heating pipeline is connected to the high-temperature hot water outlet of the high-temperature heating tank, and the other end of the high-temperature outlet heating pipeline is connected to the manifold of the underfloor heating system. This utility model's heating system combines an air source heat pump with a solar collector. When the solar collector cannot provide sufficient heat, the low-temperature air source heat pump can supplement the heating of the water in the hot water storage tank, ensuring a normal supply of domestic hot water, improving energy efficiency, and protecting the environment. The low-temperature hot water obtained after heating by the low-temperature air source heat pump is sent to the high-temperature heating water tank through a low-temperature hot water delivery pipeline. The high-temperature air source heat pump then heats the low-temperature hot water in the high-temperature heating water tank into high-temperature hot water, which can meet the heating needs of users and is especially suitable for heating in deep winter environments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0020] Figure 1 This is a schematic diagram of the entire heating system of this utility model;

[0021] Figure 2 This is a detailed schematic diagram showing the connection between the solar thermal collector mechanism of this utility model and the hot water storage tank and the domestic hot water supply pipeline;

[0022] Figure 3 This is a detailed schematic diagram showing the connection between the high-temperature heat pump mechanism of this utility model and the high-temperature heating water tank and the high-temperature outlet heating pipeline.

[0023] In the diagram, the components are: water supply pipe 1, water delivery pipe 11, water filter 12, water supply solenoid valve 13, solar collector mechanism 2, solar collector 21, solar heating circulating water pump 22, low-temperature solar water outlet pipe 23, second temperature sensor 25, low-temperature solar water inlet pipe 24, hot water storage tank 3, first temperature sensor 31, low-temperature heat pump mechanism 4, low-temperature air source heat pump 41, first heating circulating water pump 42, low-temperature heat pump water outlet pipe 43, low-temperature heat pump water inlet pipe 44, domestic hot water supply pipe 5, low-temperature hot water supply pipe 51, and low-temperature hot water supply pump. 52. Water supply filter; 53. Low-temperature hot water delivery pipeline; 6. Low-temperature hot water delivery pipe; 61. Low-temperature hot water pump; 62. Check valve; 63. High-temperature heating water tank; 7. Third temperature sensor; 71. High-temperature heat pump mechanism; 8. High-temperature air source heat pump; 81. Second heating circulating water pump; 82. High-temperature heat pump inlet pipe; 83. High-temperature heat pump outlet pipe; 84. High-temperature outlet heating pipeline; 9. High-temperature hot water supply pump; 91. High-temperature hot water supply pipeline; 92. Low-temperature return water heating pipeline; 10. Low-temperature return water pipeline; 101. Return water solenoid valve; 102. Fourth temperature sensor; 103. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-3As shown, this utility model provides a heating system combining solar energy and a heat pump. The system includes a water supply pipeline 1, a solar collector 2, a hot water storage tank 3, a low-temperature heat pump 4, a domestic hot water supply pipeline 5, a low-temperature hot water delivery pipeline 6, a high-temperature heating water tank 7, a high-temperature heat pump 8, and a high-temperature outlet heating pipeline 9. Specifically, the hot water storage tank 3 has a cold water inlet and a cold water outlet at its upper end, with the cold water inlet located to one side of the cold water outlet. The lower end of the hot water storage tank 3 has a low-temperature hot water inlet, a first hot water outlet, and a second hot water outlet, with both the first hot water outlet and the low-temperature hot water inlet located below the second hot water outlet. At the end, the second hot water outlet at the lower end of the hot water storage tank 3 is connected to the high-temperature heating water tank 7 through the low-temperature hot water delivery pipeline 6. The high-temperature heating water tank 7 is provided with a cold water inlet and a cold water outlet at the upper end, with the cold water inlet located to one side of the cold water outlet. The high-temperature heating water tank 7 is provided with a low-temperature hot water outlet at the lower end. The high-temperature heating water tank 7 is also provided with a low-temperature hot water outlet and a high-temperature hot water outlet at the bottom end, with both the low-temperature hot water outlet and the high-temperature hot water outlet located below the low-temperature hot water outlet and to one side of the high-temperature hot water outlet. The high-temperature heating water tank 7 is provided with a high-temperature hot water inlet and a low-temperature hot water return outlet at the top end, with the high-temperature hot water inlet located to one side of the low-temperature hot water return outlet. Connect water supply pipe 1 to the cold water inlet at the top of hot water storage tank 3; connect solar collector 2 to hot water storage tank 3; connect low-temperature heat pump 4 to hot water storage tank 3; connect domestic hot water supply pipe 5 to the first hot water outlet at the bottom of hot water storage tank 3; connect low-temperature hot water delivery pipe 6 between hot water storage tank 3 and high-temperature heating water tank 7; connect one end of low-temperature hot water delivery pipe 6 to the second hot water outlet at the bottom of hot water storage tank 3; connect the other end of low-temperature hot water delivery pipe 6 to the low-temperature hot water inlet of high-temperature heating water tank 7; connect high-temperature heat pump 8 to high-temperature heating water tank 7; connect one end of high-temperature outlet heating pipe 9 to the high-temperature hot water outlet of high-temperature heating water tank 7; connect the other end of high-temperature outlet heating pipe 9 to the manifold of the underfloor heating system.The solar collector 2 of this invention converts solar energy into heat energy to heat the cold water in the hot water storage tank 3, and then provides domestic hot water to users through the domestic hot water supply pipeline 5, achieving energy conservation and environmental protection. When the weather is bad and the solar collector 2 alone cannot meet the user's domestic hot water needs, a low-temperature heat pump 4 can be used as an auxiliary heat source to heat the water in the hot water storage tank 3, and then provide domestic hot water to users through the domestic hot water supply pipeline 5. The heated low-temperature hot water in the hot water storage tank 3 is then cooled by a low-temperature... Hot water delivery pipeline 6 delivers hot water to high-temperature heating water tank 7. The high-temperature heat pump mechanism 8 heats the low-temperature hot water in the high-temperature heating water tank 7 into high-temperature hot water. The heated high-temperature hot water is then delivered to the manifold of the underfloor heating system through the high-temperature outlet heating pipeline 9 to provide heating for users during the middle or deep winter. This utility model utilizes the solar thermal collector mechanism 2 or the low-temperature heat pump mechanism 4 to first heat the cold water in the hot water storage tank 3 to a low-temperature hot water state, and then uses the high-temperature heat pump mechanism 8 to heat the low-temperature hot water to a high-temperature state, which can provide users with high-temperature hot water, especially suitable for heating in the deep winter, and greatly improves the heating range.

[0027] In this embodiment of the utility model, the solar thermal collector 2 includes a solar collector 21, a solar heating circulating water pump 22, a low-temperature solar water outlet pipe 23, and a low-temperature solar water inlet pipe 24. One end of the low-temperature solar water inlet pipe 24 is connected to the cold water outlet of the hot water storage tank 3, and the other end is connected to the solar collector 21. The solar heating circulating water pump 22 is installed on the low-temperature solar water inlet pipe 24. One end of the low-temperature solar water outlet pipe 23 is connected to the solar collector 21, and the other end is connected to the first hot water inlet of the hot water storage tank 3. The outlet of the solar collector 21 is connected to the inlet of the heat exchange coil inside the hot water storage tank 3 through the low-temperature solar water outlet pipe 23. 21 converts solar energy into thermal energy to heat the cold water in the hot water storage tank 3 and store it in the hot water storage tank 3. The hot water storage tank 3 provides domestic hot water to users through the domestic hot water supply pipeline 5. The present invention has a first temperature sensor 31 installed on the side wall of the hot water storage tank 3 to measure the water temperature inside the hot water storage tank 3 in real time. The solar collector mechanism 2 of the present invention also includes a second temperature sensor 25, which is installed on the low temperature solar water outlet pipe 23 of the solar collector 21 to measure the outlet water temperature of the solar collector 21 in real time. A third temperature sensor 71 is installed on the side wall of the high temperature heating water tank 7 to measure the water temperature inside the high temperature heating water tank 7 in real time.

[0028] In other embodiments, the present invention may also include a heat exchange coil inside the hot water storage tank 3, with the outlet of the heat exchange coil connected to the inlet of the solar collector 21 via a solar heating circulating water pump 22 and a low-temperature solar water inlet pipe 24.

[0029] In its specific implementation, the low-temperature heat pump mechanism 4 includes a low-temperature air source heat pump 41, a first heating circulating water pump 42, a low-temperature heat pump outlet pipe 43, and a low-temperature heat pump inlet pipe 44. One end of the low-temperature heat pump outlet pipe 43 is connected to the cold water outlet of the hot water storage tank 3, and the other end is connected to the low-temperature air source heat pump 41. The first heating circulating water pump 42 is installed on the low-temperature heat pump inlet pipe 44, one end of which is connected to the low-temperature air source heat pump 41, and the other end is connected to the low-temperature hot water inlet of the hot water storage tank 3. By combining the low-temperature air source heat pump 41 with the solar collector 21, when the solar collector 21 cannot provide sufficient heat, the low-temperature air source heat pump 41 can supplement the heating of the water in the hot water storage tank 3, ensuring a normal supply of domestic hot water. This combination method can fully utilize the advantages of both energy sources, improve energy efficiency, and has the characteristics of low energy consumption, high heating efficiency, energy saving, and environmental protection.

[0030] In its specific implementation, the high-temperature heat pump mechanism 8 of this utility model includes a high-temperature air source heat pump 81, a second heating circulating water pump 82, a high-temperature heat pump outlet pipe 84, and a high-temperature heat pump inlet pipe 83. One end of the high-temperature heat pump outlet pipe is connected to the low-temperature hot water outlet of the high-temperature heating water tank 7, and the other end of the high-temperature heat pump outlet pipe 84 is connected to the high-temperature air source heat pump 81. The second heating circulating water pump 82 is installed on the high-temperature heat pump outlet pipe 84. One end of the high-temperature heat pump inlet pipe 83 is connected to the high-temperature air source heat pump 81, and the other end of the high-temperature heat pump inlet pipe 83 is connected to the high-temperature hot water inlet of the high-temperature heating water tank 7. The low-temperature air source heat pump 41 used in this invention has a maximum outlet water temperature of 60℃ and an input power of 9.52kW. The high-temperature air source heat pump 81 has a maximum outlet water temperature of 85℃ and an input power of 15.52kW. In specific implementation, the heating temperature of the water in the hot water storage tank 3 by the low-temperature air source heat pump 41 can be set to 55℃, that is, the temperature of the low-temperature hot water is 55℃. The heating temperature of the low-temperature hot water in the high-temperature heating water tank 7 by the high-temperature air source heat pump 81 can be set to 80℃, that is, the temperature of the high-temperature hot water is 80℃. When the water in the hot water storage tank 3 is heated to 55℃, the 55℃ water is sent to the high-temperature heating water tank 7 by the low-temperature hot water delivery pipeline 6. The second heating circulation water pump 82 is turned on, and then the high-temperature air source heat pump 81 is started to heat the 55℃ low-temperature hot water. The low-temperature hot water from the hot water storage tank 3 is pumped to the high-temperature heating water tank 7 via the low-temperature hot water delivery pipeline 6. Then, the low-temperature hot water in the high-temperature heating water tank 7 is heated to a high temperature by the high-temperature heat pump mechanism 8. The high-temperature water is then sent to the manifold of the underfloor heating system via the high-temperature outlet heating pipeline 9, which can meet the heating needs of users. This utility model uses a low-temperature air source heat pump 41 to heat the cold water first, and then sends the low-temperature hot water from the hot water storage tank 3 to the high-temperature heating water tank 7 via the low-temperature hot water delivery pipeline 6. The high-temperature air source heat pump 81 then heats the low-temperature hot water in the high-temperature heating water tank 7 to a high-temperature hot water, avoiding the need to manufacture a large high-temperature heating water tank 7, effectively reducing the manufacturing cost of the high-temperature heating water tank 7, and providing a wider heating range.

[0031] The high-temperature hot water supply pipeline 9 of this utility model includes a high-temperature hot water supply pump 91 and a high-temperature hot water supply pipe 92. The high-temperature hot water supply pump 91 is installed on the high-temperature hot water supply pipe 92. One end of the high-temperature hot water supply pipe 92 is connected to the high-temperature hot water outlet of the high-temperature heating water tank 7, and the other end of the high-temperature hot water supply pipe 92 is connected to the manifold of the underfloor heating system. The high-temperature hot water in the high-temperature heating water tank 7 is transported to the manifold of the underfloor heating system through the high-temperature hot water supply pump 91 and the high-temperature hot water supply pipe 92 to achieve the purpose of providing heating for users.

[0032] In this embodiment of the utility model, the heating system includes a low-temperature return water heating pipe 10. One end of the low-temperature return water heating pipe 10 is connected to the high-temperature return water port of the high-temperature heating water tank 7, and the other end of the low-temperature return water heating pipe 10 is used to connect to the water collector of the underfloor heating system. The low-temperature return water heating pipe 10 includes a low-temperature return water pipe 101 and a return water solenoid valve 102. The return water solenoid valve 102 is installed on the low-temperature return water pipe 101. One end of the low-temperature return water pipe 101 is connected to the high-temperature return water port of the high-temperature heating water tank 7, and the other end of the low-temperature return water pipe 101 is connected to the water collector of the underfloor heating system. In a specific implementation, the utility model also installs a fourth temperature sensor 103 on the low-temperature return water pipe 101 to measure the water temperature of the return water in the low-temperature return water pipe 101 in real time. The low-temperature water that has cooled down after circulating through the underfloor heating system is collected by the water collector. The return water solenoid valve 102 is activated, and the low-temperature water that has cooled down at the water collector of the underfloor heating system is transported back to the high-temperature heating water tank 7 through the low-temperature return water pipe 101. Then, the low-temperature water in the high-temperature heating water tank 7 is heated by the high-temperature air source heat pump 81 to ensure the user's need for continuous heating.

[0033] The domestic hot water supply pipeline 5 of this utility model includes a low-temperature hot water supply pipe 51, a low-temperature hot water supply pump 52, and a water supply filter 53. One end of the low-temperature hot water supply pipe 51 is connected to a hot water storage tank 3, and the other end is used to connect to the user's hot water network. The low-temperature hot water supply pump 52 is installed on the low-temperature hot water supply pipe 51, and the water supply filter 53 is installed on the low-temperature hot water supply pipe 51 and located to the side of the low-temperature hot water supply pump 52. When the low-temperature hot water supply pump 52 is started, the low-temperature hot water in the hot water storage tank 3 is transported to the user's hot water network through the low-temperature hot water supply pipe 51 to meet the user's domestic hot water supply needs.

[0034] In its specific implementation, the low-temperature hot water delivery pipeline 6 of this utility model includes a low-temperature hot water delivery pipe 61, a low-temperature hot water pump 62, and a check valve 63. One end of the low-temperature hot water delivery pipe 61 is connected to a hot water storage tank 3, and the other end is connected to a high-temperature heating water tank 7. The low-temperature hot water pump 62 and the check valve 63 are installed on the low-temperature hot water delivery pipe 61, with the check valve 63 located on one side of the low-temperature hot water pump 62. When the water temperature in the hot water storage tank 3 reaches the set low-temperature temperature of 55°C, the low-temperature hot water pump 62 is started, and the low-temperature hot water in the hot water storage tank 3 is sent to the high-temperature heating water tank 7 through the low-temperature hot water delivery pipe 61, so that the high-temperature air source heat pump 81 can heat the low-temperature hot water in the high-temperature heating water tank 7 to a high-temperature state. The check valve 63 is provided to prevent the low-temperature hot water delivered on the low-temperature hot water delivery pipe 61 from flowing back to the hot water storage tank 3.

[0035] The water supply pipeline 1 of this utility model includes a water supply pipe 11, a water supply filter 12, and a water supply solenoid valve 13. The front end of the water supply pipe 11 is used to connect to the water supply network. The water supply filter 12 is installed at the front end of the water supply pipe 11, and the rear end of the water supply pipe 11 is connected to the hot water storage tank 3. The water supply solenoid valve 13 is installed on the water supply pipe 11 and located between the water supply pipe 11 and the hot water storage tank 3. When the water supply solenoid valve 13 is activated, cold water is sent to the hot water storage tank 3 through the water supply pipe 11. The water supply filter 12 filters the cold water to prevent impurities in the cold water from flowing into the hot water storage tank 3 through the water supply pipe 11.

[0036] The heating and heating system of this utility model includes the following working states: hot water production on sunny days, hot water supply on cloudy days, and heating in mid-winter or deep winter.

[0037] 1) When the sun is shining brightly, the solar collector 21 will convert the energy drawn from the sun into heat energy, heat the cold water in the hot water storage tank into low-temperature hot water and store it in the hot water storage tank 3. The low-temperature hot water supply pump 52 will be started, so that the low-temperature hot water in the hot water storage tank 3 can be transported to the user's hot water pipe network through the low-temperature hot water supply pipe 51.

[0038] 2) When continuous rainy weather occurs, if the solar collector 21 alone cannot heat the hot water storage tank 3 to meet the user's domestic hot water needs, the low-temperature air source heat pump 41 will supplement the heating of the water in the hot water storage tank 3. The low-temperature air source heat pump 41 serves as an auxiliary heat source to heat the hot water storage tank 3 in order to provide domestic hot water for the user.

[0039] 3) During the winter or deep winter heating season: the low-temperature hot water in the hot water storage tank 3 is pumped to the high-temperature heating water tank 7 through the low-temperature hot water transmission pipeline 6. Then, the low-temperature hot water in the high-temperature heating water tank 7 is heated into high-temperature hot water by the high-temperature heat pump mechanism 8. The high-temperature hot water in the high-temperature heating water tank 7 is transported to the water distributor of the underfloor heating system through the high-temperature hot water supply pump 91 and the high-temperature hot water supply pipeline 92 to achieve the purpose of heating for users.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A heating system combining solar energy and a heat pump, characterized in that: The heating system includes a water supply pipeline, a solar collector, a hot water storage tank, a low-temperature heat pump, a domestic hot water supply pipeline, a low-temperature hot water delivery pipeline, a high-temperature heating tank, a high-temperature heat pump, and a high-temperature outlet heating pipeline. The water supply pipeline is connected to the cold water inlet at the top of the hot water storage tank. The solar collector is connected to the hot water storage tank. The low-temperature heat pump is connected to the hot water storage tank. The domestic hot water supply pipeline is connected to the first hot water outlet at the bottom of the hot water storage tank. The low-temperature hot water delivery pipeline is located between the hot water storage tank and the high-temperature heating tank. One end of the low-temperature hot water delivery pipeline is connected to the second hot water outlet at the bottom of the hot water storage tank, and the other end is connected to the low-temperature hot water inlet of the high-temperature heating tank. The high-temperature heat pump is connected to the high-temperature heating tank. One end of the high-temperature outlet heating pipeline is connected to the high-temperature hot water outlet of the high-temperature heating tank, and the other end is connected to the manifold of the underfloor heating system.

2. The heating system combining solar energy and a heat source heat pump according to claim 1, characterized in that: The solar thermal collector includes a solar collector, a solar heating circulating water pump, a low-temperature solar water outlet pipe, and a low-temperature solar water inlet pipe. One end of the low-temperature solar water inlet pipe is connected to the cold water outlet of the hot water storage tank, and the other end is connected to the solar collector. The solar heating circulating water pump is installed on the low-temperature solar water inlet pipe. One end of the low-temperature solar water outlet pipe is connected to the solar collector, and the other end is connected to the first hot water inlet of the hot water storage tank.

3. The heating system combining solar energy and a heat pump according to claim 1, characterized in that: The low-temperature heat pump mechanism includes a low-temperature air source heat pump, a first heating circulating water pump, a low-temperature heat pump outlet pipe, and a low-temperature heat pump inlet pipe. One end of the low-temperature heat pump outlet pipe is connected to the cold water outlet of the hot water storage tank, and the other end of the low-temperature heat pump outlet pipe is connected to the low-temperature air source heat pump. The first heating circulating water pump is installed on the low-temperature heat pump inlet pipe. One end of the low-temperature heat pump inlet pipe is connected to the low-temperature air source heat pump, and the other end of the low-temperature heat pump inlet pipe is connected to the low-temperature hot water inlet of the hot water storage tank.

4. The heating system combining solar energy and a heat pump according to claim 1, characterized in that: The high-temperature heat pump mechanism includes a high-temperature air source heat pump, a second heating circulating water pump, a high-temperature heat pump outlet pipe, and a high-temperature heat pump inlet pipe. One end of the high-temperature heat pump outlet pipe is connected to the low-temperature hot water outlet of the high-temperature heating water tank, and the other end of the high-temperature heat pump outlet pipe is connected to the high-temperature air source heat pump. The second heating circulating water pump is installed on the high-temperature heat pump outlet pipe. One end of the high-temperature heat pump inlet pipe is connected to the high-temperature air source heat pump, and the other end of the high-temperature heat pump inlet pipe is connected to the high-temperature hot water inlet of the high-temperature heating water tank.

5. The heating system combining solar energy and a heat source heat pump according to claim 1, characterized in that: The high-temperature hot water supply pipeline includes a high-temperature hot water supply pump and a high-temperature hot water supply pipe. The high-temperature hot water supply pump is installed on the high-temperature hot water supply pipe. One end of the high-temperature hot water supply pipe is connected to the high-temperature hot water outlet of the high-temperature heating water tank, and the other end of the high-temperature hot water supply pipe is connected to the manifold of the underfloor heating system.

6. The heating system combining solar energy and a heat pump according to claim 1, characterized in that: The heating system includes a low-temperature return water heating pipe, one end of which is connected to the high-temperature return water inlet of the high-temperature heating water tank, and the other end of which is used to connect to the water collector of the underfloor heating system.

7. The heating system combining solar energy and a heat pump according to claim 6, characterized in that: The low-temperature return water heating pipeline includes a low-temperature return water pipe and a return water solenoid valve. The return water solenoid valve is installed on the low-temperature return water pipe. One end of the low-temperature return water pipe is connected to the high-temperature return water port of the high-temperature heating water tank, and the other end of the low-temperature return water pipe is connected to the water collector of the underfloor heating system.

8. The heating system combining solar energy and a heat pump according to claim 1, characterized in that: The domestic hot water supply pipeline includes a low-temperature hot water supply pipe, a low-temperature hot water supply pump, and a water supply filter. One end of the low-temperature hot water supply pipe is connected to a hot water storage tank, and the other end of the low-temperature hot water supply pipe is used to connect to the user's hot water network. The low-temperature hot water supply pump is installed on the low-temperature hot water supply pipe, and the water supply filter is installed on the low-temperature hot water supply pipe and located on one side of the low-temperature hot water supply pump.

9. The heating system combining solar energy and a heat pump according to claim 1, characterized in that: The low-temperature hot water delivery pipeline includes a low-temperature hot water delivery pipe, a low-temperature hot water pump, and a check valve. One end of the low-temperature hot water delivery pipe is connected to a hot water storage tank, and the other end of the low-temperature hot water delivery pipe is connected to a high-temperature heating water tank. The low-temperature hot water pump and the check valve are installed on the low-temperature hot water delivery pipe, and the check valve is located on one side of the low-temperature hot water pump.

10. The heating system combining solar energy and a heat source heat pump according to claim 1, characterized in that: The water supply pipeline includes a water supply delivery pipe, a water supply filter, and a water supply solenoid valve. The front end of the water supply delivery pipe is used to connect to the water supply network. The water supply filter is installed at the front end of the water supply delivery pipe. The rear end of the water supply delivery pipe is connected to the hot water storage tank. The water supply solenoid valve is installed on the water supply delivery pipe and located between the water supply delivery pipe and the hot water storage tank.

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