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 an air source heat pump and ground source heat pump coupled low-carbon digital heat supply system which comprises an air source heat pump, a ground source heat pump, a middle water tank and a heat supply side, and the middle 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 connected with the output end and the input end of the heat supply side through pipelines. The water temperature of the middle water tank can be monitored through the arranged first temperature sensor, when the water temperature exceeds a set value to a certain degree, namely, the requirement of a heat supply side is met, and heat cannot be utilized, hot water can be introduced into the buried pipe through the branch pipe without waiting for use of the heat supply side, so that the heat utilization efficiency is improved. Compared with the prior art, the system has the advantages that the heat energy can be further utilized, and the utilization effect of the heat energy is effectively improved.

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 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 115751418 A, an air source heat pump and ground source heat pump coupling system is disclosed, including an indoor heating terminal, an indoor cooling terminal, multiple groups of air source heat pump units, a ground source heat pump and an outdoor buried pipe heat exchanger. A group of air source heat pump units in the front is connected in series with a group of air source heat pump units in the rear. The air source heat pump units are respectively connected to air conditioning pumps, the indoor heating terminal and the indoor cooling terminal are respectively connected to water distributors, the indoor heating terminal and the indoor cooling terminal are respectively connected to water collectors, the water distributor is connected to a user pump, the user pump is connected to a condenser and an evaporator of a ground source heat pump, the evaporator and condenser of the ground source heat pump are respectively connected to a water collector, the air conditioning pump is connected to a water distributor, each group of air source heat pump units is respectively connected to a water collector, the outdoor buried pipe heat exchanger is connected to an air conditioning pump and a ground source pump, the ground source pump is respectively connected to a condenser and an evaporator of a ground source heat pump, and the outdoor buried pipe heat exchanger is respectively connected to each group of air source heat pump units. Advantages: Effectively solve the thermal imbalance problem of outdoor buried heat exchanger system.

[0004] When the existing technology is in use, when the ground source heat pump system has "heat accumulation", the series-parallel system of the air source heat pump can be changed to a parallel system. As a cold source, the cold energy is pumped to the outdoor buried pipe heat exchanger through the air conditioner in the non-heating and cooling season to help the ground source heat pump system recover. When the ground source heat pump system has "cold accumulation", the series-parallel system of the air source heat pump can be changed to a parallel system. As a heat source, the heat is pumped to the outdoor buried pipe heat exchanger through the air conditioner in the non-heating and cooling season to help the ground source heat pump system recover. However, in actual use, the air source heat pump may also have "heat accumulation", that is, the heat energy of the air source heat pump meets the demand on the heating side, but the heat energy cannot be fully utilized. In the heating season, it is not possible to choose whether to heat hot water or restore the ground temperature underground according to the specific situation. 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 coupling an air source heat pump and a 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 an air source heat pump and a ground source heat pump, comprising 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 two output ends, and the two output ends are respectively connected to the input ends of the air source heat pump and the ground source heat pump, wherein the input pipeline has two input ends, and the two input ends are respectively connected to the output ends of the air source heat pump and the ground source heat pump, wherein the two input ends of the input pipeline and the two output ends of the output pipeline are both provided with a first solenoid valve, and a circulating pump is provided on the pipeline at the first output end of the intermediate water tank and on the output pipeline;

[0008] A first temperature sensor is arranged inside the intermediate water tank. The ground source heat pump includes an evaporator and a condenser. The output end and the input end of the evaporator are respectively connected to the two ends of the buried pipe, and the output end and the input end of the condenser are respectively connected to the output pipeline and the input pipeline. The output end and the input end of the buried pipe are both connected to a branch pipe, and the two branch pipes are respectively connected to the input end of the air source heat pump and the output end of the condenser with the input pipeline. Second solenoid valves are arranged at both ends of the buried pipe and both ends of the two branch pipes. The first temperature sensor is electrically connected to the first solenoid valve and the second solenoid valve via a control processor.

[0009] Preferably, the air source heat pump is provided with a second temperature sensor, and a signal output end of the second temperature sensor is electrically connected to the air source heat pump and the ground source heat pump via a control processor.

[0010] Preferably, a third solenoid valve is provided on both sides of the two circulation pumps.

[0011] Preferably, an electric heating device is also provided on the pipeline at the first output end of the intermediate water tank.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can monitor the water temperature of the intermediate water tank by setting a first temperature sensor. When the water temperature exceeds the set value to a certain extent, that is, when the demand of the heating side is met but there is heat that cannot be utilized, hot water can be passed into the buried pipe through the branch pipe without waiting for the use of the heating side, thereby restoring the ground temperature for the buried pipe area. Compared with the existing technology, this system can further utilize thermal energy and effectively improve the utilization effect of thermal energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of a low-carbon digital heating system coupled with an air source heat pump and a ground source heat pump proposed in the utility model;

[0015] 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 an air source heat pump and a ground source heat pump proposed by the utility model.

[0016] In the figure: 1. third solenoid valve; 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. electric heating device; 15. first temperature sensor; 16. control processor; 17. second temperature sensor; 18. evaporator; 19. condenser; 20. buried pipe; 21. branch pipe; 22. second solenoid valve. DETAILED DESCRIPTION

[0017] 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.

[0018] Reference Figure 1-Figure 2 , a low-carbon digital heating system coupled with an air source heat pump 2 and a ground source heat pump 3, comprising 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 two output ends, and the two output ends are connected to the first output end 6 and the second input end 9. The output ends are respectively connected to the input ends of the air source heat pump 2 and the ground source heat pump 3, the input pipeline 11 has two input ends, and the two input ends are respectively connected to the output ends of the air source heat pump 2 and the ground source heat pump 3, the air source heat pump 2 and the ground source heat pump 3 realize heat circulation with the intermediate water tank 4 through the output pipeline 10 and the input pipeline 11, the two input ends of the input pipeline 11 and the two output ends of the output pipeline 10 are both provided with a first solenoid valve 12, and the pipeline of the first output end 6 of the intermediate water tank 4 and the output pipeline 10 are both provided with a circulating pump 13;

[0019] A first temperature sensor 15 is arranged inside the intermediate water tank 4. 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 end of the air source heat pump 2 and the output end of the condenser 19 with the input pipeline 11. Second solenoid valves 22 are arranged at both ends of the buried pipe 20 and both ends of the two branch pipes 21. The first temperature sensor 15 is electrically connected to the first solenoid valve 12 and the second solenoid valve 22 through the control processor 16.

[0020] When the system is in use, the water temperature of the intermediate water tank 4 can be monitored by the first temperature sensor 15. When the water temperature exceeds the set value to a certain extent, that is, when the demand of the heating side 5 is met but there is heat that cannot be utilized, there is no need to wait for the use of the heating side 5. The hot water can be passed into the buried pipe 20 through the branch pipe 21, thereby restoring the ground temperature for the buried pipe 20 area. Compared with the prior art, the system can further utilize thermal energy and effectively improve the utilization effect of thermal energy.

[0021] In this embodiment, a second temperature sensor 17 is provided on the air source heat pump 2. The signal output end of the second temperature sensor 17 is electrically connected to the air source heat pump 2 and the ground source heat pump 3 via the control processor 16. The current ambient temperature can be determined by the second temperature sensor 17. When the temperature is high, 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 ambient temperature to achieve efficient heating.

[0022] In this embodiment, a third solenoid valve 1 is provided on both sides of the two circulating pumps 13. The third solenoid valve 1 is provided on the corresponding pipelines, namely, the pipeline of the first output end 6 and the output pipeline 10. The third solenoid valve 1 is used to control the discharge of water from the intermediate water tank 4.

[0023] In this embodiment, an electric heating device 14 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 14 is added to ensure the water supply temperature.

[0024] 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 an air source heat pump and a ground source heat pump, characterized in that: It includes 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 two output ends, and the two output ends are respectively connected to the input ends of the air source heat pump and the ground source heat pump, wherein the input pipeline has two input ends, and the two input ends are respectively connected to the output ends of the air source heat pump and the ground source heat pump, wherein the two input ends of the input pipeline and the two output ends of the output pipeline are both provided with a first solenoid valve, and a circulating pump is provided on the pipeline at the first output end of the intermediate water tank and on the output pipeline; A first temperature sensor is arranged inside the intermediate water tank. The ground source heat pump includes an evaporator and a condenser. The output end and the input end of the evaporator are respectively connected to the two ends of the buried pipe, and the output end and the input end of the condenser are respectively connected to the output pipeline and the input pipeline. The output end and the input end of the buried pipe are both connected to a branch pipe, and the two branch pipes are respectively connected to the input end of the air source heat pump and the output end of the condenser with the input pipeline. Second solenoid valves are arranged at both ends of the buried pipe and both ends of the two branch pipes. The first temperature sensor is electrically connected to the first solenoid valve and the second solenoid valve via a control processor.

2. According to claim 1, a low-carbon digital heating system coupled with an air source heat pump and a ground source heat pump is characterized by: The air source heat pump is provided with a second temperature sensor, and a signal output end of the second temperature sensor is electrically connected to the air source heat pump and the ground source heat pump via a control processor.

3. The low-carbon digital heating system coupled with an air source heat pump and a ground source heat pump according to claim 1, characterized in that: A third solenoid valve is arranged on both sides of the two circulation pumps.

4. According to claim 2, a low-carbon digital heating system coupled with an air source heat pump and a ground source heat pump is characterized by: An electric heating device is also provided on the pipeline at the first output end of the intermediate water tank.

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