Solar photo-thermal, air source heat pump and ground source heat pump coupled low-carbon digital heat supply system

Abstract

The utility model relates to the technical field of heat supply systems, and discloses a solar photo-thermal, air source heat pump and ground source heat pump coupled low-carbon digital heat supply system which comprises a solar heat collector, an air source heat pump, a ground source heat pump, a middle water tank and a heat supply side. According to the solar heat collector, the air source heat pump, the ground source heat pump and the middle water tank, when the solar water heater is used, whether the solar water heater is in the daytime or at night can be judged according to the photosensitive sensor, the current temperature is judged through the temperature sensor, and therefore whether the sun exists or not is judged; according to the system, heat exchange is conducted only through the solar heat collector, heat exchange can be conducted through the air source heat pump under the condition that the solar temperature is not high in the daytime or the temperature is high at night, and under the condition that the temperature is low, the ground source heat pump can be adopted for heating water to enter the middle water tank, and compared with the prior art, the system can automatically switch heat sources according to the environment; and efficient heat supply is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, and in particular to a low-carbon digital heating system coupled with solar thermal energy, an air source heat pump and a ground source heat pump. Background Art

[0002] In northern my country, the traditional heating methods generally provide services to users who need heating by municipal central heating and using coal-fired or gas-fired boilers to heat hot water. Municipal central heating is provided by power plants; traditional coal-fired or gas-fired boilers burn coal or natural gas to heat water and provide heating to users. This heating method indirectly or directly emits a large amount of pollutants (carbon dioxide, etc.), and traditional coal-fired or gas-fired boilers have low combustion efficiency and high energy consumption.

[0003] In a Chinese patent with publication number CN 213577727 U, a ground source heat pump, an air energy heat pump and a solar energy integrated heating system are disclosed, comprising a body, a heating window is fixedly installed on the top of the front of the body, a water inlet pipe and a water outlet pipe are fixedly installed in the center of the top of one side of the body, the center of the middle of one side and the center of the bottom of one side from left to right in sequence, and the interior of the body is divided into a solar energy heating chamber, an air energy heating chamber and a ground source heat heating chamber from top to bottom in sequence by two partitions. The utility model provides a ground source heat pump, an air energy heat pump and a solar energy integrated heating system, the body can ensure the heat extraction of the ground source heat pump in winter, and can ensure the higher energy efficiency of the ground source heat pump system in the next winter in summer, the solar energy heating chamber, the air energy heating chamber and the ground source heat heating chamber have good shock absorption effects, the solar water heater, the air energy heat pump and the ground source heat pump are stably and reliably installed, and the body is easy to install and fix.

[0004] When the existing technology is in use, solar water heaters, air heat pumps and ground source heat pumps can be used to achieve heating. However, when heating, the existing technology mainly relies on ground source heat pumps for heating, and air heat pumps for auxiliary heating. Solar water heaters can provide heat supplement to the ground source heat heating room, but it is impossible to switch the heating source according to the actual environment (day or night, whether there is sunlight or not), and the heating effect is insufficient. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a low-carbon digital heating system coupled with solar thermal energy, air source heat pump and ground source heat pump.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A low-carbon digital heating system coupled with solar thermal energy, air source heat pump and ground source heat pump comprises a solar collector, an air source heat pump, a ground source heat pump, an intermediate water tank and a heating side, wherein the intermediate water tank is provided with a first output end, a second output end, a first input end and a second input end, wherein the first output end and the first input end are both connected to the output end and the input end of the heating side through pipelines, and the second output end and the second input end are respectively provided with an output pipeline and an input pipeline, wherein the output pipeline has three output ends, and the three output ends are respectively connected to the solar collector, the air source heat pump, The input end of the ground source heat pump is connected, the input pipeline has three input ends, and the three input ends are respectively connected to the output ends of the solar collector, the air source heat pump and the ground source heat pump, the three input ends of the input pipeline and the three output ends of the output pipeline are each provided with a first solenoid valve, the pipeline at the first output end of the intermediate water tank and the output pipeline are each provided with a circulating pump, the solar collector is provided with a photosensor and a temperature sensor, and the signal output ends of the photosensor and the temperature sensor are electrically connected to the first solenoid valve, the air source heat pump and the ground source heat pump via a control processor.

[0008] Preferably, a second temperature sensor is disposed inside the intermediate water tank.

[0009] Preferably, the ground source heat pump includes an evaporator and a condenser, the output end and input end of the evaporator are respectively connected to the two ends of the buried pipe, the output end and input end of the condenser are respectively connected to the output pipeline and the input pipeline, the output end and input end of the buried pipe are both connected to branch pipes, and the two branch pipes are respectively connected to the input pipeline, the input end of the solar collector and the output end of the condenser.

[0010] Preferably, both ends of the buried pipe and both ends of the two branch pipes are provided with second solenoid valves.

[0011] Preferably, a third solenoid valve is provided on both sides of the two circulation pumps.

[0012] Preferably, an electric heating device is also provided on the pipeline at the first output end of the intermediate water tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model, through the solar collector, air source heat pump, ground source heat pump and intermediate water tank, as well as temperature sensor and photosensor, can judge whether it is daytime or night according to the photosensor, judge the current temperature by the temperature sensor, and thus judge whether there is sun. Therefore, when it is daytime and there is sun, heat exchange can be performed only by the solar collector, and when there is no sun and the temperature is high during the day or at night when the temperature is high, heat exchange can be performed by the air source heat pump, and when the temperature is low, the ground source heat pump can be used to heat water to enter the intermediate water tank. Compared with the prior art, the system can automatically switch the heat source according to the environment to achieve efficient heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a low-carbon digital heating system coupled with solar thermal energy, air source heat pump and ground source heat pump proposed in the utility model;

[0016] Figure 2 This is a schematic diagram of signal transmission and reception of a control processor of a low-carbon digital heating system coupled with solar thermal energy, air source heat pump and ground source heat pump proposed by the utility model.

[0017] In the figure: 1. solar collector; 2. air source heat pump; 3. ground source heat pump; 4. intermediate water tank; 5. heating side; 6. first output end; 7. second output end; 8. first input end; 9. second input end; 10. output pipeline; 11. input pipeline; 12. first solenoid valve; 13. circulation pump; 14. photosensor; 15. temperature sensor; 16. control processor; 17. second temperature sensor; 18. evaporator; 19. condenser; 20. buried pipe; 21. branch pipe; 22. second solenoid valve; 23. third solenoid valve; 24. electric heating device. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1 and Figure 2A low-carbon digital heating system coupled with solar thermal energy, an air source heat pump 2 and a ground source heat pump 3 comprises a solar collector 1, an air source heat pump 2, a ground source heat pump 3, an intermediate water tank 4 and a heating side 5, wherein the intermediate water tank 4 is provided with a first output end 6, a second output end 7, a first input end 8 and a second input end 9, wherein the first output end 6 and the first input end 8 are both connected to the output end and the input end of the heating side 5 through pipelines, and the second output end 7 and the second input end 9 are respectively provided with an output pipeline 10 and an input pipeline 11, wherein the output pipeline 10 has three output ends, and the three output ends are respectively connected to the solar collector 1, the air source heat pump 2 and the ground source heat pump 3 is connected, the input pipeline 11 has three input ends, and the three input ends are respectively connected to the output ends of the solar collector 1, the air source heat pump 2, and the ground source heat pump 3, the three input ends of the input pipeline 11 and the three output ends of the output pipeline 10 are each provided with a first solenoid valve 12, the pipeline of the first output end 6 of the intermediate water tank 4 and the output pipeline 10 are each provided with a circulating pump 13, the solar collector 1 is provided with a photosensor 14 and a temperature sensor 15, and the signal output ends of the photosensor 14 and the temperature sensor 15 are electrically connected to the first solenoid valve 12, the air source heat pump 2, and the ground source heat pump 3 via a control processor 16.

[0020] When the system is in use, it can determine whether it is daytime or nighttime according to the photosensor 14, and determine the current temperature through the temperature sensor 15, thereby determining whether there is sunlight (when the temperature is high during the day). Therefore, when it is daytime and there is sunlight, heat exchange can be performed only through the solar collector 1. When there is no sunlight and the temperature is high during the day or when the temperature is high at night, heat exchange can be performed through the air source heat pump 2. When the temperature is low, the ground source heat pump 3 can be used to heat water to enter the intermediate water tank 4. Compared with the prior art, the system can automatically switch the heat source according to the environment to achieve efficient heating.

[0021] In this embodiment, a second temperature sensor 17 is provided inside the intermediate water tank 4. The second temperature sensor 17 can detect the water temperature in the intermediate water tank 4, so as to determine whether the water temperature in the intermediate water tank 4 meets the heating demand. If it does not reach the set value, it can continue to be heated through the solar collector 1, the air source heat pump 2, and the ground source heat pump 3.

[0022] In this embodiment, the ground source heat pump 3 includes an evaporator 18 and a condenser 19, the output end and the input end of the evaporator 18 are respectively connected to the two ends of the buried pipe 20, the output end and the input end of the condenser 19 are respectively connected to the output pipeline 10 and the input pipeline 11, the output end and the input end of the buried pipe 20 are both connected to the branch pipe 21, and the two branch pipes 21 are respectively connected to the input pipeline 11 to connect the input end of the solar collector 1 and the output end of the condenser 19, the second temperature sensor 17 detects the water temperature in the intermediate water tank 4, when the water temperature exceeds the set value to a certain extent, that is, when the demand of the heating side 5 is met, there is heat that cannot be utilized, it can enter the buried pipe 20 through the branch pipe 21 without waiting for the use of the heating side 5, so that the ground temperature can be restored for the buried pipe 20 area.

[0023] In this embodiment, second solenoid valves 22 are provided at both ends of the buried pipe 20 and both ends of the two branch pipes 21. The second solenoid valves 22 facilitate controlling the flow direction of the heating water at the solar collector 1 (directly entering the intermediate water tank 4 or restoring the ground temperature in the buried pipe 20 area).

[0024] In this embodiment, a third solenoid valve 23 is provided on both sides of the two circulating pumps 13. The third solenoid valve 23 is arranged on the corresponding pipelines, namely, the pipeline of the first output end 6 and the output pipeline 10. The third solenoid valve 23 is used to control the discharge of water from the intermediate water tank 4.

[0025] In this embodiment, an electric heating device 24 is also provided on the pipeline of the first output end 6 of the intermediate water tank 4. In order to ensure the heating temperature under extreme weather conditions in winter, the electric heating device 24 is added to ensure the water supply temperature.

[0026] In this embodiment, the control processor 16 is also electrically connected to the second solenoid valve 22, the third solenoid valve 23 and the electric heating device 24.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump, characterized by: It includes a solar collector, an air source heat pump, a ground source heat pump, an intermediate water tank and a heating side. The intermediate water tank is provided with a first output end, a second output end, a first input end and a second input end. The first output end and the first input end are both connected to the output end and the input end of the heating side through pipelines. The second output end and the second input end are respectively provided with an output pipeline and an input pipeline. The output pipeline has three output ends, and the three output ends are respectively connected to the input ends of the solar collector, the air source heat pump and the ground source heat pump. The input pipeline has three input ends, and the three input ends are respectively connected to the output ends of the solar collector, the air source heat pump and the ground source heat pump. The three input ends of the input pipeline and the three output ends of the output pipeline are both provided with a first solenoid valve. A circulating pump is both provided on the pipeline at the first output end of the intermediate water tank and on the output pipeline. The solar collector is provided with a photosensor and a temperature sensor. The signal output ends of the photosensor and the temperature sensor are electrically connected to the first solenoid valve, the air source heat pump and the ground source heat pump through a control processor.

2. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump according to claim 1, characterized in that: A second temperature sensor is arranged inside the intermediate water tank.

3. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump according to claim 2, characterized in that: The ground source heat pump includes an evaporator and a condenser, the output end and input end of the evaporator are respectively connected to the two ends of the buried pipe, the output end and input end of the condenser are respectively connected to the output pipeline and the input pipeline, the output end and input end of the buried pipe are both connected to branch pipes, and the two branch pipes are respectively connected to the input pipeline, the input end of the solar collector and the output end of the condenser.

4. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump according to claim 3, characterized in that: Second solenoid valves are provided at both ends of the buried pipe and both ends of the two branch pipes.

5. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump according to claim 4, characterized in that: A third solenoid valve is arranged on both sides of the two circulation pumps.

6. A low-carbon digital heating system coupled with solar thermal, air source heat pump and ground source heat pump according to claim 1, characterized in that: An electric heating device is also provided on the pipeline at the first output end of the intermediate water tank.

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