CN214665194U - Air source gas engine heat pump water heater - Google Patents
Air source gas engine heat pump water heater Download PDFInfo
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- CN214665194U CN214665194U CN202021909507.6U CN202021909507U CN214665194U CN 214665194 U CN214665194 U CN 214665194U CN 202021909507 U CN202021909507 U CN 202021909507U CN 214665194 U CN214665194 U CN 214665194U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The utility model provides an air source gas engine heat pump water heater. The system comprises a heat pump refrigerant circulating system, an engine waste heat recovery system, an engine waste heat defrosting system and a water heating system. The water heating system is connected with the condenser and the waste heat recovery heat exchanger, and the condensation heat of the refrigerant in the condenser and the waste heat of the engine are recovered. The engine coolant circulating system is provided with an electric three-way valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and the like, and the functions of waste heat water supply heating, waste heat defrosting and engine safe operation guarantee are achieved. The utility model discloses fully rationally utilized gas engine waste heat, realized the purpose at the high-efficient operation in cold areas, energy-conserving effect is more showing than current electric drive type air source heat pump water heater, and the operation is stable and the security is higher.
Description
Technical Field
The utility model relates to an air source heat pump water heater, concretely relates to air source gas engine heat pump water heater.
Background
The electric driving type air source heat pump water heater is widely applied at present due to the characteristics of high energy efficiency and high use safety. There are still some disadvantages. For example: firstly, a large amount of electric air conditioning equipment and electric water heaters are used in summer, so that the electric load is extremely unbalanced in winter and summer, the fuel gas load in China is also unbalanced in seasons, and the demand in winter is high and the demand in summer is low. The condition of extremely unbalanced energy use in winter and summer can cause huge energy loss. Secondly, the coal-fired power plant in China has low efficiency of about 40 percent, and the electrically-driven heat pump water heater depends on electric power as energy, so the space for improving the efficiency is limited. Thirdly, the electrically-driven heat pump water heater relates to the problem of defrosting during heating operation in winter, and the existing defrosting modes such as hot gas bypass defrosting and four-way reversing reverse defrosting have the problems of poor reliability, high energy consumption, poor comfort and the like, so that the development of a more energy-saving and efficient heat pump water heater is urgently needed.
The air source gas engine heat pump water heater is a novel water heater which takes natural gas as primary energy input and realizes heating circulation by driving a compressor by a gas engine. Although the vapor compression type heat pump cycle principle is completely the same as that of an electric drive type air source heat pump water heater, the air source gas engine heat pump water heater has obvious technical advantages aiming at the problems of the electric drive type air source heat pump water heater at the present stage. Firstly, the air source gas engine heat pump water heater adopts natural gas as the energy input of unit, can effectively alleviate the problem of summer power load peak, gas consumption low ebb in our country, plays the effect of peak clipping and ebb filling. And secondly, the waste heat of the cylinder sleeve of the gas engine and the flue gas is recovered simultaneously to improve the water temperature, and the primary energy utilization rate of the water heater is higher than that of other types of water heaters. And thirdly, the air source gas engine heat pump water heater adopts the waste heat of the engine to defrost, so that the energy efficiency is high, the comfort is good, and the problem that the electric drive type air source heat pump water heater is difficult to defrost is effectively solved.
Disclosure of Invention
In order to compensate the defects of the prior art, the utility model provides an air source gas engine heat pump water heater. It includes heat pump refrigerant circulation system, engine waste heat recovery system, engine waste heat defrost system and water heating system:
the heat pump refrigerant circulating system is characterized in that an output shaft of a gas engine (1) is connected with a rotating shaft of an open-type compressor (9), an exhaust port of the compressor (9) is connected with an inlet of an oil separator (11), an exhaust shock absorption pipe (10) is installed on an exhaust pipe of the compressor, an oil return port of the oil separator (11) is connected with an oil return port of the compressor (9) through an oil return pipe, an outlet of the oil separator (11) is connected with an inlet of a plate-type heat exchanger (12), an outlet of the plate-type heat exchanger (12) is connected with a liquid inlet pipe of a liquid reservoir (13), a liquid outlet pipe of the liquid reservoir (13) is sequentially connected with a drying filter (14), a liquid supply electromagnetic valve (15) and a liquid viewing mirror (16), the other end of the liquid viewing mirror (16) is communicated with an inlet end of an electronic expansion valve (17), and an outlet end of the electronic expansion valve (17) is connected with an inlet end of a finned heat exchanger (19), the outlet end of the finned heat exchanger (19) is connected with the inlet of a gas-liquid separator (21), the outlet of the gas-liquid separator (21) is connected with the air suction port of a compressor (9), and an air suction shock tube (22) is arranged between the gas-liquid separator (21) and the compressor (9).
The engine waste heat recovery system is characterized in that: an outlet of the antifreeze liquid pump (6) is connected with an antifreeze liquid inlet end of the flue gas heat exchanger (7), an antifreeze liquid outlet end of the flue gas heat exchanger (7) is connected with an antifreeze liquid inlet end of the engine (1), and a smoke exhaust outlet of the engine (1) is connected with one end of a flue gas channel of the flue gas heat exchanger (7). An antifreeze solution outlet channel of the engine (1) is connected with an A port of the electric three-way valve (2), a B port of the electric three-way valve (2) is connected with an inlet end of the first electromagnetic valve (3), a C port of the electric three-way valve (2) is connected with an inlet end of the second electromagnetic valve (4), an outlet end of the second electromagnetic valve (4) is connected with the waste heat recovery heat exchanger (5), and an outlet channel of the waste heat recovery heat exchanger (5) is connected with one end of the antifreeze solution pump (6).
The engine waste heat defrosting system is characterized in that: an antifreeze liquid outlet channel of the engine (1) is connected with an A port of the electric three-way valve (2), a C port of the electric three-way valve (2) is connected with an inlet end of a third electromagnetic valve (8), an outlet end of the third electromagnetic valve (8) is connected with a defrosting unit of the fin-type heat exchanger (19), and an outlet channel of the defrosting unit of the fin-type heat exchanger (19) is connected with one end of an antifreeze liquid pump (6).
The water heating system is characterized in that: install circulating water outlet stop valve (24) on the circulating water export of storage water tank (23), the circulating water export of storage water tank (23) is connected with the cooling water entrance point of plate heat exchanger (12), the cooling water exit end of plate heat exchanger (12) is connected with waste heat stop valve (26) entrance point, waste heat stop valve (26) exit end is connected with the water inlet of waste heat recovery heat exchanger (5), it sets up the bypass line to hold at waste heat recovery heat exchanger (5) business turn over water mouth, and install bypass valve (27), storage water tank (23) water inlet installation circulating water inlet stop valve (28). The water storage tank is also provided with: the cold water inlet is communicated with the cold water pipeline; and the hot water outlet is communicated with a hot water pipeline.
Drawings
The following detailed description is to be read with reference to the drawings and the accompanying detailed description.
Fig. 1 is a circulation schematic diagram of the air source gas engine heat pump water heater of the utility model.
In the figure, the direction of the arrows indicates the flow direction of the fluid in the pipeline. Reference numerals: 1-a gas engine, 2-an electric three-way valve, 3-a first electromagnetic valve, 4-a second electromagnetic valve, 5-a waste heat recovery heat exchanger, 6-an antifreeze liquid pump, 7-a flue gas heat exchanger, 8-a third electromagnetic valve, 9-a compressor, 10-an exhaust shock tube, 11-an oil separator, 12-a plate heat exchanger, 13-a liquid reservoir, 14-a drying filter, 15-a liquid supply electromagnetic valve, 16-a liquid sight glass, 17-an electronic expansion valve, 18-a fan, 19-a fin type heat exchanger, 20-an evaporation pressure regulating valve, 21-a gas-liquid separator, 22-an air suction shock tube, 23-a water storage tank, 24-a circulating water outlet stop valve, 25-a circulating water pump, 26-a waste heat stop valve and 27-a bypass valve, 28-a circulating water inlet stop valve, 29-a cold water inlet stop valve and 30-a hot water outlet stop valve.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The refrigerant exchanges heat with air through the fin heat exchanger 19, absorbs heat of the air, and changes from a low-temperature low-pressure liquid state to a low-temperature low-pressure gaseous state. The refrigerant exiting the finned heat exchanger 19 enters the compressor 9. The compressor 9 is driven by the gas engine 1 to apply work to the refrigerant, so that the refrigerant is compressed from a low-temperature low-pressure gas state to a high-temperature high-pressure gas state. The refrigerant is discharged to the oil separator 11 through the discharge port of the compressor 9, and the oil separator 11 separates the lubricating oil in the high-temperature and high-pressure gaseous refrigerant and inputs the lubricating oil into the compressor 9 through the oil return pipe. The refrigerant is discharged from the outlet of the oil separator 11 and then enters the plate heat exchanger 12, and the water from the water storage tank 23 carries away the heat of condensation of the high-temperature high-pressure gaseous refrigerant, so that the refrigerant is changed from the high-temperature high-pressure gaseous state to the high-pressure liquid state. The liquid refrigerant from the plate heat exchanger 12 enters a liquid receiver 13, the flow rate of the refrigerant is stabilized by the liquid receiver 13, and then the refrigerant passes through a drying filter 14, a liquid supply solenoid valve 15 and a liquid viewing mirror 16 in sequence, enters an electronic expansion valve 17, and is subjected to throttling expansion by the electronic expansion valve 17, so that the refrigerant is changed into a low-temperature low-pressure liquid from a high-pressure liquid. The low-temperature low-pressure liquid refrigerant enters the finned heat exchanger 19 again, and continuously exchanges heat with air through the finned heat exchanger 19 to absorb the heat of the air, and then enters the next thermodynamic cycle process.
The engine waste heat comprises engine flue gas waste heat and cylinder sleeve waste heat, the antifreeze of the engine is sent into a flue gas heat exchanger 7 by an antifreeze pump 6, and after absorbing the exhaust smoke waste heat of the engine, the antifreeze enters the cylinder sleeve of the engine 1 to take away the engine cylinder sleeve waste heat. According to the environmental characteristics, the energy consumption characteristics and the running condition of the unit, the opening degree of the electric three-way valve 2 and the starting and stopping of the first electromagnetic valve 3, the second electromagnetic valve 4 and the third electromagnetic valve 8 are controlled by a control program to adjust the flow direction and the flow distribution state of the antifreeze solution discharged from the cylinder sleeve of the engine 1, so that the energy consumption requirement of the unit application occasion is met, and the unit is ensured to run safely and efficiently. When the engine unit is preheated, the circulation state of the antifreeze solution of the engine is adjusted by controlling the electric three-way valve 2, the first electromagnetic valve 3, the second electromagnetic valve 4 and the third electromagnetic valve 8, so that the antifreeze solution temperature of the engine is quickly increased, and the antifreeze solution temperature required to be maintained by safe and efficient operation of the engine 1 is achieved; when the unit operates to prepare hot water, the cycle state of the antifreeze solution of the engine is adjusted by controlling the electric three-way valve 2, the first electromagnetic valve 3, the second electromagnetic valve 4 and the third electromagnetic valve 8, so that the antifreeze solution flows through the waste heat recovery heat exchanger 5, and the waste heat of the engine is transferred to the circulating water side; when the unit operates in a low-temperature environment and the refrigerant unit of the fin-type heat exchanger 19 frosts, the engine antifreeze solution is used for defrosting, the cycle state of the engine antifreeze solution is adjusted by controlling the electric three-way valve 2, the first electromagnetic valve 3, the second electromagnetic valve 4 and the third electromagnetic valve 8, so that the antifreeze solution flows through the defrosting unit of the fin-type heat exchanger 19, and defrosting treatment is carried out on the refrigerant unit of the fin-type heat exchanger 19.
The air source gas engine heat pump water heater system also comprises a water storage tank. The water storage tank 23 is provided with a cold water inlet, a circulating water outlet, a circulating water inlet and a hot water outlet. The cold water inlet is connected to one side of the water storage tank 23, the circulating water outlet is communicated with the plate heat exchanger 12, the circulating water inlet is connected to the other side of the water storage tank 23, and the hot water outlet is communicated with the hot water pipeline. When the heat recovery device is used, cold water is introduced into the water storage tank 23 through the cold water inlet, water is introduced into the plate heat exchanger 12 through the circulating water outlet by the circulating water pump 25 to absorb the heat released by condensation of the refrigerant, the water absorbing the heat released by condensation of the refrigerant is introduced into the waste heat recovery heat exchanger 5 to absorb the waste heat of the engine, and finally the water returns to the water storage tank 23 through the circulating water inlet. In this embodiment, the air source gas engine heat pump water heater further comprises a bypass pipeline, the bypass pipeline is arranged at two ends of a water inlet and a water outlet of the waste heat recovery heat exchanger 5, a bypass valve 27 is arranged on the bypass pipeline, and the water quantity of the water storage tank 23 communicated with the heat exchanger can be adjusted through the bypass valve 27 so as to realize sufficient heat exchange of water.
The present invention and its embodiments have been described above schematically, without limitation. The embodiment shown in the drawings is only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, the design and connection of the elements are not designed in an inventive way, and the similar structural modes and embodiments as those of the technical solution shall fall within the protection scope of the present invention without departing from the spirit of the invention.
Claims (1)
1. An air source gas engine heat pump water heater is characterized by comprising a heat pump refrigerant circulating system, an engine waste heat recovery system, an engine waste heat defrosting system and a water heating system;
the heat pump refrigerant circulating system comprises a compressor (9), an exhaust shock absorption pipe (10), an oil separator (11), a plate type heat exchanger (12), a liquid reservoir (13), a drying filter (14), a liquid supply electromagnetic valve (15), a liquid viewing mirror (16), an electronic expansion valve (17), a fan (18), a fin type heat exchanger (19), an evaporation pressure regulating valve (20), a gas-liquid separator (21) and an air suction shock absorption pipe (22); an output shaft of a gas engine (1) is connected with a rotating shaft of an open-type compressor (9), an exhaust port of the compressor (9) is connected with an inlet of an oil separator (11), an exhaust shock tube (10) is installed on an exhaust pipe of the compressor, an oil return port of the oil separator (11) is connected with an oil return port of the compressor (9) through an oil return pipe, an outlet of the oil separator (11) is connected with an inlet of a plate-type heat exchanger (12), an outlet of the plate-type heat exchanger (12) is connected with a liquid inlet pipe of a liquid reservoir (13), a liquid outlet pipe of the liquid reservoir (13) is sequentially connected with a drying filter (14), a liquid supply electromagnetic valve (15) and a liquid viewing mirror (16), the other end of the liquid viewing mirror (16) is communicated with an inlet end of an electronic expansion valve (17), an outlet end of the electronic expansion valve (17) is connected with an inlet end of a finned heat exchanger (19), and an outlet end of the finned heat exchanger (19) is connected with an inlet of a gas-liquid separator (21), the outlet of the gas-liquid separator (21) is connected with the air suction port of the compressor (9), and the air suction shock absorption pipe (22) is arranged between the gas-liquid separator (21) and the compressor (9);
the engine waste heat recovery system comprises a gas engine (1), an electric three-way valve (2), a first electromagnetic valve (3), a second electromagnetic valve (4), a waste heat recovery heat exchanger (5), an antifreezing liquid pump (6) and a flue gas heat exchanger (7); an outlet of the antifreezing fluid pump (6) is connected with an antifreezing fluid inlet end of the flue gas heat exchanger (7), an antifreezing fluid outlet end of the flue gas heat exchanger (7) is connected with an antifreezing fluid inlet end of the engine (1), a smoke exhaust outlet of the engine (1) is connected with one end of a flue gas channel of the flue gas heat exchanger (7), an antifreezing fluid outlet channel of the engine (1) is connected with an A port of the electric three-way valve (2), a B port of the electric three-way valve (2) is connected with an inlet end of the first electromagnetic valve (3), a C port of the electric three-way valve (2) is connected with an inlet end of the second electromagnetic valve (4), an outlet end of the second electromagnetic valve (4) is connected with the waste heat recovery heat exchanger (5), and an outlet channel of the waste heat recovery heat exchanger (5) is connected with one end of the antifreezing fluid pump (6);
the engine waste heat defrosting system comprises a gas engine (1), an electric three-way valve (2), an antifreezing liquid pump (6), a flue gas heat exchanger (7), a third electromagnetic valve (8) and a finned heat exchanger (19); an antifreeze liquid outlet channel of the engine (1) is connected with an A port of the electric three-way valve (2), a C port of the electric three-way valve (2) is connected with an inlet end of a third electromagnetic valve (8), an outlet end of the third electromagnetic valve (8) is connected with a defrosting unit of the fin-type heat exchanger (19), and an outlet channel of the defrosting unit of the fin-type heat exchanger (19) is connected with one end of an antifreeze liquid pump (6);
the water heating system comprises a water storage tank (23), a circulating water outlet stop valve (24), a circulating water pump (25), a waste heat stop valve (26), a bypass valve (27), a circulating water inlet stop valve (28), a cold water inlet stop valve (29) and a hot water outlet stop valve (30); install circulating water export stop valve (24) on the circulating water export of storage water tank (23), the circulating water export of storage water tank (23) is connected with the cooling water entrance point of plate heat exchanger (12), the cooling water exit end of plate heat exchanger (12) is connected with waste heat stop valve (26) entrance point, waste heat stop valve (26) exit end is connected with the water inlet of waste heat recovery heat exchanger (5), it sets up the bypass line to hold at waste heat recovery heat exchanger (5) business turn over water mouth to install bypass valve (27), storage water tank (23) water inlet installation circulating water inlet stop valve (28), still be provided with on the storage water tank: the cold water inlet is communicated with the cold water pipeline, and the hot water outlet is communicated with the hot water pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021909507.6U CN214665194U (en) | 2020-09-04 | 2020-09-04 | Air source gas engine heat pump water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021909507.6U CN214665194U (en) | 2020-09-04 | 2020-09-04 | Air source gas engine heat pump water heater |
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| CN214665194U true CN214665194U (en) | 2021-11-09 |
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| CN202021909507.6U Active CN214665194U (en) | 2020-09-04 | 2020-09-04 | Air source gas engine heat pump water heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371155A (en) * | 2022-08-30 | 2022-11-22 | 南京天加环境科技有限公司 | Gas heat pump air conditioning system capable of quickly defrosting and control method thereof |
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2020
- 2020-09-04 CN CN202021909507.6U patent/CN214665194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115371155A (en) * | 2022-08-30 | 2022-11-22 | 南京天加环境科技有限公司 | Gas heat pump air conditioning system capable of quickly defrosting and control method thereof |
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