Novel domestic hot water supply system

Abstract

The utility model discloses a novel domestic hot water supply system, which relates to the technical field of domestic hot water supply and comprises a solar heat collection device, an air source heat pump system and an urban heat supply network heat supply system. The air source heat pump system and the solar heat collection system are used for providing domestic hot water in the non-heating season, the solar heat collection unit uses solar energy as a heat source, the urban heat supply network heat supply system and the solar heat collector are used for providing domestic hot water in the heating season, and the solar energy is used as a heat source under the condition that the solar energy is sufficient. Under the condition that solar energy is insufficient, an air source heat pump system adjusting valve is opened and closed for heating of the urban heat supply network heating system, a central heating system adjusting valve is opened, heat supply network return water enters the displacement heat exchanger to be heated by urban heat supply network high-temperature water, and then domestic hot water is provided for heat consumers through the heat supply network circulating pump.

Description

Technical Field

[0001] The utility model relates to the technical field of domestic hot water supply, in particular to a novel domestic hot water supply system. Background Art

[0002] At present, there are still many domestic hot water supply systems that use coal, oil, gas hot water boilers or electric heating as heat sources. These methods of preparing domestic hot water usually consume a large amount of fossil fuels and produce a variety of pollutants, which have an adverse impact on the promotion of energy conservation, emission reduction and sustainable development strategies. Accelerating the development of renewable energy and applying it to domestic hot water supply systems is a very urgent and important task.

[0003] The organic combination of solar energy collectors, air source heat pumps and urban heating networks forms a composite heat source domestic hot water supply system using solar energy, air source heat pumps and urban heating networks. This can not only overcome the drawbacks of water temperature not meeting requirements under climatic conditions such as continuous rain and weak solar radiation, but can also effectively save fossil fuels.

[0004] In summary, the domestic hot water supply system of solar energy, air source heat pump and urban heating network composite heat source fully combines the advantages of the three, so a new domestic hot water supply system is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A novel domestic hot water supply system comprises a solar thermal collector, an air source heat pump system and a city heating network heating system, wherein the air source heat pump system comprises an axial flow fan, a heat pump evaporator, a heat pump compressor, a heat pump condenser and an expansion valve, the solar thermal collector comprises a solar thermal collector plate, a heat collection circulating water pump, a heat collection water tank and a water tank replenishment pump, the city heating network heating system comprises a hot water storage tank, a volumetric heat exchanger, a first regulating valve, a second regulating valve, a heat network circulating pump and a heat user, and the air source heat pump system comprises an axial flow fan, a heat pump evaporator, a heat pump compressor, a heat pump condenser and an expansion valve.

[0007] A further improvement of the technical solution of the utility model is that the heat output of the solar collector panel is connected to a heat collecting tank, the heat collecting tank is through-connected with a heat collecting circulation water pump and a water tank make-up pump, and the heat collecting tank is through-connected with the urban heating network heating system through the water tank make-up pump.

[0008] A further improvement of the technical solution of the utility model is that a tap water inlet is provided on one side of the heat collecting tank, and the heat collecting tank is connected to an external water source through the tap water inlet.

[0009] A further improvement of the technical solution of the utility model is that the hot water storage tank is connected with the first regulating valve and the second regulating valve.

[0010] A further improvement of the technical solution of the utility model is that the volumetric heat exchanger is provided with a water supply inlet of the city heating network and a water return outlet of the city heating network.

[0011] A further improvement of the technical solution of the utility model is that the air source heat pump system inputs air heat through an axial flow fan.

[0012] A further improvement of the technical solution of the utility model is that the heat pump evaporator delivers cold air to the heat pump condenser through the heat pump compressor.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a new type of domestic hot water supply system, which can make full use of solar energy resources, save energy and protect the environment, without any exhaust gas emissions, and meet the national green and low-carbon policies. It can ensure the continuous supply of domestic hot water throughout the year, which greatly facilitates our lives and makes our lives faster. The system has a high degree of automation and realizes unmanned operation and remote control. It can realize functions such as data collection, fault alarm, and historical records, which is convenient for digital operation and management and has low operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a new domestic hot water supply system of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the solar heat collection device of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the air source heat pump system of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the urban heating network component of the utility model.

[0019] In the figure: 1. Axial flow fan; 2. Heat pump evaporator; 3. Heat pump compressor; 4. Heat pump condenser; 5. Expansion valve; 6. Heat storage tank; 7. Solar collector panel; 8. Heat collection circulation water pump; 9. Heat collection tank; 10. Water tank make-up pump; 11. Volumetric heat exchanger; 12. First regulating valve; 13. Second regulating valve; 14. Heat network circulation pump; 15. Heat user; 16. Urban heat network water supply inlet; 17. Urban heat network return water outlet; 18. Tap water inlet. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the embodiments:

[0021] Example 1

[0022] like Figure 1-4 As shown, the utility model provides a novel domestic hot water supply system, including a solar thermal collector, an air source heat pump system and a city heating network heating system, the air source heat pump system includes an axial flow fan 1, a heat pump evaporator 2, a heat pump compressor 3, a heat pump condenser 4, and an expansion valve 5, the solar thermal collector includes a solar thermal collector plate 7, a heat collection circulation water pump 8, a heat collection water tank 9, and a water tank replenishment pump 10, the city heating network heating system includes a hot water storage tank 6, a volumetric heat exchanger 11, a first regulating valve 12, a second regulating valve 13, a heat network circulation pump 14, and a heat user 15, the air source heat pump system includes an axial flow fan 1, a heat pump evaporator 2, a heat pump compressor 3, a heat pump condenser 4, and an expansion valve 5.

[0023] Example 2

[0024] like Figure 1 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the solar thermal collector device includes a solar thermal collector panel 7, a heat collection circulation water pump 8, a heat collection tank 9, and a water tank make-up pump 10. The heat output of the solar thermal collector panel 7 is connected to the heat collection tank 9. The heat collection tank 9 is through-connected with the heat collection circulation water pump 8 and the water tank make-up pump 10. The heat collection tank 9 is through-connected with the urban heating network heating system through the water tank make-up pump 10. A tap water inlet 18 is provided on one side of the heat collection tank 9. The heat collection tank 9 is connected to an external water source through the tap water inlet 18. The air source heat pump system includes an axial flow fan 1, a heat pump evaporator 2, a heat pump compressor 3, a heat pump condenser 4, and an expansion valve 5. The air source heat pump system inputs air heat through the axial flow fan 1, and the heat pump evaporator 2 conveys cold air to the heat pump condenser 4 through the heat pump compressor 3.

[0025] In this embodiment, an air source heat pump system and a solar thermal collection system are used to provide domestic hot water during the non-heating season. The axial flow fan 1 of the air source heat pump system sends air into the heat pump evaporator 2. The heat pump evaporator 2 absorbs heat from the air and discharges cold air. The low-temperature and low-pressure circulating medium in the heat pump evaporator 2 takes away the heat of the air and is sent to the heat pump compressor 3 in a gaseous state. After being compressed, a high-temperature and high-pressure circulating medium is formed and sent to the heat pump condenser 4. The high-temperature and high-pressure circulating medium in the heat pump condenser 4 condenses and releases heat. The released heat is exchanged with the hot network water. The circulating medium after releasing heat enters the expansion valve 5 for throttling and pressure reduction. At this time, the circulating medium completes the cycle.

[0026] The solar thermal unit uses solar energy as a heat source. The cold water in the heat collection tank 9 flows into the solar thermal collector panel 7 through a heat collection circulation water pump. The heat absorption coating on the solar thermal collector panel 7 converts the energy in solar radiation into thermal energy and heats the cold water flowing through, so that it flows back to the heat collection tank 9 after being heated up. The hot water that absorbs the heat from the heat pump condenser 4 and the hot water in the heat collection tank 9 enter the hot water storage tank 6 for storage and release. The heat network supply water stored in the hot water storage tank 6 passes through the opened first regulating valve 12 and is sent to the heat user through the heat network circulation pump 14. The heat network return water after consuming the heat re-enters the heat pump condenser 4 to complete the cycle.

[0027] Example 3

[0028] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the urban heating network heating system includes a hot water storage tank 6, a volumetric heat exchanger 11, a first regulating valve 12, a second regulating valve 13, a heating network circulation pump 14, and a heat user 15. The hot water storage tank 6 is connected with the first regulating valve 12 and the second regulating valve 13, and the volumetric heat exchanger 11 is provided with a city heating network water supply input port 16 and a city heating network return water output port 17.

[0029] In this embodiment, the heating season uses the city heating network heating system and solar collectors to provide domestic hot water. When solar energy is sufficient, solar energy is used as the heat source. When solar energy is insufficient, the city heating network heating system opens and closes the air source heat pump system regulating valve, opens the central heating system regulating valve, and the heat network return water enters the volumetric heat exchanger 11 and is heated by the city heating network high-temperature water. After that, it is passed through the heat network circulation pump 14 to provide domestic hot water to the heat user 15. The models used in the system are as follows: 1-Axial flow The fan model is SF-76PZ04; 2, 3, 4, 5-the air source heat pump model is YFRS-KFD25; 6-the heat storage tank model is CAHP-TANK-120B, with a diameter of 0.712m, a height of 1.712m, and a water tank capacity of 455L; 7-the solar collector panel model is ZTY-YH-80 / TL, with a single area of ​​2㎡; 8-the heat collection circulation water pump model is MVI402-3 / 16 / E / 3-380-50-2, with a flow rate of 8m 3 / h; 9-The model of the heat collection tank is a stainless steel water tank with a capacity of 100L; 10-The model of the water tank replenishment pump is CR10-04 with a flow rate of 10m 3 / h; 11-The model of the volumetric heat exchanger is FBR09, and the heat exchange area is 60㎡; 12, 13-The model of the regulating valve is the electric regulating valve VVF529.150K; 14-The model of the heat network circulation pump is TP150-390 / 4, and the flow rate is 303m 3 / h.

[0030] The following is a detailed description of the working principle of this new domestic hot water supply system.

[0031] like Figure 1-4 As shown, in the non-heating season, an air source heat pump system and a solar thermal collection system are used to provide domestic hot water. The axial flow fan 1 of the air source heat pump system sends air into the heat pump evaporator 2. The heat pump evaporator 2 absorbs heat from the air and discharges cold air. The low-temperature and low-pressure circulating medium in the heat pump evaporator 2 takes away the heat of the air and is sent to the heat pump compressor 3 in a gaseous state. After being compressed, a high-temperature and high-pressure circulating medium is formed and sent to the heat pump condenser 4. The high-temperature and high-pressure circulating medium in the heat pump condenser 4 condenses and releases heat. The released heat is exchanged with the hot network water. The circulating medium after releasing heat enters the expansion valve 5 for throttling and reducing the pressure. At this time, the circulating medium completes the cycle.

[0032] The solar thermal unit uses solar energy as a heat source. The cold water in the heat collection tank 9 flows into the solar thermal collector panel 7 through a heat collection circulation water pump. The heat absorption coating on the solar thermal collector panel 7 converts the energy in solar radiation into heat energy and heats the cold water flowing through it, so that it flows back to the heat collection tank 9 after being heated up. The hot water that has absorbed the heat from the heat pump condenser 4 and the hot water in the heat collection tank 9 enter the hot water storage tank 6 for storage and release. The hot network water supply stored in the hot water storage tank 6 passes through the opened first regulating valve 12 and is sent to the heat user through the hot network circulation pump 14. The hot network return water that has consumed the heat re-enters the heat pump condenser 4 to complete the cycle. In the heating season, the urban heating network heating system and solar thermal collectors are used to provide domestic hot water. When solar energy is sufficient, solar energy is used as a heat source. When solar energy is insufficient, the city The heating system of the city heating network opens and closes the regulating valve of the air source heat pump system, opens the regulating valve of the central heating system, and the return water of the heating network enters the volumetric heat exchanger 11 and is heated by the high-temperature water of the city heating network. Then, it is provided to the heat user 15 through the heating network circulation pump 14 to provide domestic hot water. The models used in the system are as follows: 1-The axial flow fan model is SF-76PZ04; 2, 3, 4, 5-The air source heat pump model is YFRS-KFD25; 6-The heat storage tank model is CAHP-TANK-120B, with a diameter of 0.712m, a height of 1.712m, and a water tank capacity of 455L; 7-The solar collector panel model is ZTY-YH-80 / TL, with a single area of ​​2㎡; 8-The collector circulation water pump model is MVI402-3 / 16 / E / 3-380-50-2, with a flow rate of 8m 3 / h; 9-The model of the heat collection tank is a stainless steel water tank with a capacity of 100L; 10-The model of the water tank replenishment pump is CR10-04 with a flow rate of 10m 3 / h; 11-The model of the volumetric heat exchanger is FBR09, and the heat exchange area is 60㎡; 12, 13-The model of the regulating valve is the electric regulating valve VVF529.150K; 14-The model of the heat network circulation pump is TP150-390 / 4, and the flow rate is 303m 3 / h.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A new type of domestic hot water supply system, including a solar heat collector, an air source heat pump system and a city heating network heating system, characterized in that: The air source heat pump system comprises an axial flow fan (1), a heat pump evaporator (2), a heat pump compressor (3), a heat pump condenser (4), and an expansion valve (5); the solar heat collection device comprises a solar heat collection plate (7), a heat collection circulating water pump (8), a heat collection water tank (9), and a water tank replenishment pump (10); the urban heat network heating system comprises a hot water storage tank (6), a volumetric heat exchanger (11), a first regulating valve (12), a second regulating valve (13), a heat network circulating pump (14), and a heat user (15); the air source heat pump system comprises an axial flow fan (1), a heat pump evaporator (2), a heat pump compressor (3), a heat pump condenser (4), and an expansion valve (5).

2. A novel domestic hot water supply system according to claim 1, characterized in that: The heat output of the solar thermal collector panel (7) is connected to a heat collection tank (9), and the heat collection tank (9) is connected to a heat collection circulation water pump (8) and a water tank replenishment pump (10). The heat collection tank (9) is connected to a heating system of a city heating network via the water tank replenishment pump (10).

3. A novel domestic hot water supply system according to claim 1, characterized in that: A tap water inlet (18) is provided on one side of the heat collecting tank (9), and the heat collecting tank (9) is connected to an external water source through the tap water inlet (18).

4. A novel domestic hot water supply system according to claim 1, characterized in that: The hot water storage tank (6) is in continuous communication with the first regulating valve (12) and the second regulating valve (13).

5. A novel domestic hot water supply system according to claim 1, characterized in that: The volumetric heat exchanger (11) is provided with a city heating network water supply inlet (16) and a city heating network return water outlet (17).

6. A novel domestic hot water supply system according to claim 1, characterized in that: The air source heat pump system inputs air heat via an axial flow fan (1).

7. A novel domestic hot water supply system according to claim 1, characterized in that: The heat pump evaporator (2) transports cold air to the heat pump condenser (4) via the heat pump compressor (3).

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