CN212566403U - Defrosting system of air source heat pump evaporator - Google Patents
Defrosting system of air source heat pump evaporator Download PDFInfo
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- CN212566403U CN212566403U CN202021522726.9U CN202021522726U CN212566403U CN 212566403 U CN212566403 U CN 212566403U CN 202021522726 U CN202021522726 U CN 202021522726U CN 212566403 U CN212566403 U CN 212566403U
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Abstract
The utility model relates to a defrosting system of an air source heat pump evaporator, which comprises a compressor, a condenser, an evaporator fan, a throttle valve and an evaporator; is characterized by also comprising a four-way valve, a water receiving tank, a coaxial heat exchanger, a water pump, a water storage tank, a one-way valve and a spray pipe; the water receiving tank is arranged below the evaporator and used for receiving water falling from the evaporator, the water receiving tank is communicated with the water storage tank, a water outlet pipe of the water storage tank is communicated with a water inlet of the coaxial heat exchanger, a water outlet of the coaxial heat exchanger is communicated with a water inlet of the spray pipe, and a water outlet of the spray pipe faces the evaporator and is used for defrosting; the water pump is arranged on the water outlet pipe. Its advantage does: the defrosting device can quickly defrost and defrost by using defrosting water, so that the energy consumption of the system is reduced, water resources are saved, and the operation of the system is not influenced.
Description
Technical Field
The utility model relates to a defrosting system of air source heat pump evaporimeter.
Background
In an air source heat pump, an evaporator is an important heat exchange device, and the heat exchange performance of the evaporator is related to the operation efficiency of the whole system. Under the working condition of low-temperature operation in winter, an evaporator of an air conditioning system or a low-temperature freezing and refrigerating system is very easy to frost, particularly in a high-humidity environment, the evaporator frosts more seriously, and the heat transfer resistance is increased due to the generation of a frost layer, so that the heat exchange performance of the evaporator is obviously reduced; therefore, the realization of the frostless environment of the evaporator or the efficient defrosting of the heat exchanger has important significance for improving the efficiency of the refrigeration system and reducing the energy consumption of the system. At present, common defrosting methods comprise hot gas bypass defrosting, hot fluorine defrosting, electric heating defrosting, mechanical defrosting, hot water defrosting and the like, and each defrosting method has advantages and disadvantages; the hot gas bypass defrosting is unfavorable for the stable operation of the system, the hot fluorine defrosting can obviously improve the temperature of a cold room, an additional heat source is needed for electric heating defrosting and hot water defrosting, and the mechanical defrosting process is relatively complex.
Disclosure of Invention
The utility model aims at overcoming prior art not enough and providing an air source heat pump evaporator's defrost system, can melt the frost fast to utilize the water that melts to melt the frost to carry out the defrosting, reduced the energy consumption of system, the water economy resource does not influence the operation of system.
In order to achieve the above object, the present invention is implemented as a defrosting system of an air source heat pump evaporator, comprising a compressor, a condenser, an evaporator fan, a throttle valve and an evaporator; according to the refrigerant flow direction, the evaporator, the throttle valve and the condenser are sequentially communicated in series; the water-saving device is characterized by also comprising a four-way valve, a water receiving tank, a coaxial heat exchanger, a water pump, a water storage tank, a one-way valve and a spray pipe; according to the flow direction of a refrigerant, a first inlet a of the four-way valve is communicated with an outlet of the compressor, a first outlet b of the four-way valve is communicated with an inlet of the evaporator and an inlet of the one-way valve respectively, the first inlet a of the four-way valve is communicated with the first outlet b of the four-way valve, a second outlet c of the four-way valve is communicated with an inlet of the compressor, a second inlet d of the four-way valve is communicated with an outlet of the condenser, a second inlet d of the four-way valve is communicated with the second outlet c of the four-way valve, an outlet of the one-way valve is communicated with a refrigerant inlet of the coaxial heat exchanger, and a refrigerant outlet; the water receiving tank is arranged below the evaporator and used for receiving water falling from the evaporator, the water receiving tank is communicated with the water storage tank, a water outlet pipe of the water storage tank is communicated with a water inlet of the coaxial heat exchanger, a water outlet of the coaxial heat exchanger is communicated with a water inlet of the spray pipe, and a water outlet of the spray pipe faces the evaporator and is used for defrosting; the water pump is arranged on the water outlet pipe.
In the technical scheme, a water drainage pipe is arranged at the bottom of the water receiving tank, and a water outlet of the water drainage pipe is positioned in the water storage tank.
In the technical scheme, a plurality of spray nozzles are arranged at the water outlet position of the spray pipe, and all the spray nozzles face the evaporator for defrosting.
In the technical scheme, an overflow port is arranged at the upper part of the water storage tank.
Compared with the prior art, the utility model the advantage do: the defrosting device can quickly defrost and defrost by using defrosting water, so that the energy consumption of the system is reduced, water resources are saved, and the operation of the system is not influenced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, it is a defrosting system of an air source heat pump evaporator, comprising a compressor 1, a four-way valve 2, a condenser 3, an evaporator fan 4, a throttle valve 5, an evaporator 7, a water receiving tank 8, a coaxial heat exchanger 9, a water pump 10, a water storage tank 11, a one-way valve 12 and a spray pipe 13.
According to the refrigerant flow direction, the evaporator 7, the throttle valve 5 and the condenser 3 are sequentially connected in series and communicated, a first inlet a of the four-way valve 2 is communicated with an outlet of the compressor 1, a first outlet b of the four-way valve 2 is respectively communicated with an inlet of the evaporator 7 and an inlet of the one-way valve 12, the first inlet a of the four-way valve 2 is communicated with a first outlet b of the four-way valve 2, a second outlet c of the four-way valve 2 is communicated with an inlet of the compressor 1, a second inlet d of the four-way valve 2 is communicated with an outlet of the condenser 3, a second inlet d of the four-way valve 2 is communicated with a second outlet c of the four-way valve 2, an outlet of the one-way valve 12 is communicated with a refrigerant inlet of the coaxial heat exchanger 9, and.
The refrigerant circulation when the system normally works is as follows: compressor 1 → four-way valve 2 → evaporator 7 → throttle valve 5 → compressor 1;
the refrigerant cycle when the system defrosts the evaporator 7 is as follows: compressor 1 → four-way valve 2 → check valve 13 → coaxial heat exchanger 9 → throttle valve 5 → compressor 1.
The water receiving tank 8 is arranged below the evaporator 7 and used for receiving water falling from the evaporator 7, the water receiving tank 8 is communicated with the water storage tank 11, so that the water in the water receiving tank 8 can flow into the water storage tank 11 to utilize the water falling from the evaporator 7, a water outlet pipe 111 of the water storage tank 11 is communicated with a water inlet of the coaxial heat exchanger 9, a water outlet of the coaxial heat exchanger 9 is communicated with a water inlet of the spray pipe 13, the coaxial heat exchanger 9 heats the inflow water, and a water outlet of the spray pipe 13 faces the evaporator 7 and is used for defrosting; the water pump 10 is arranged on the water outlet pipe 111.
The defrosting water circulation of the evaporator 7 is as follows: the water receiving tank 8 → the water storage tank 11 → the water pump 10 → the coaxial heat exchanger 9 for heating → the spray pipe 13 for spraying the frost to the evaporator 7 for defrosting.
In this embodiment, a water drainage pipe 81 is disposed at the bottom of the water receiving tank 8, and a water outlet of the water drainage pipe 81 is located in the water storage tank 11; when the water dispenser works, the water guide pipe 81 guides water in the water receiving tank 8 to the water storage tank 11.
In the present embodiment, several shower nozzles 6 are provided at the water outlet position of the shower pipe 13, and all the shower nozzles 6 face the evaporator 7 for defrosting.
In this embodiment, an overflow hole 112 is provided at an upper portion of the water storage tank 11 to prevent water in the water storage tank from overflowing.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention.
Claims (4)
1. A defrosting system of an air source heat pump evaporator comprises a compressor (1), a condenser (3), an evaporator fan (4), a throttle valve (5) and an evaporator (7); according to the flow direction of a refrigerant, the evaporator (7), the throttle valve (5) and the condenser (3) are sequentially communicated in series; the device is characterized by also comprising a four-way valve (2), a water receiving tank (8), a coaxial heat exchanger (9), a water pump (10), a water storage tank (11), a one-way valve (12) and a spray pipe (13); according to the flow direction of a refrigerant, a first inlet a of the four-way valve (2) is communicated with an outlet of the compressor (1), a first outlet b of the four-way valve (2) is respectively communicated with an inlet of the evaporator (7) and an inlet of the one-way valve (12), a first inlet a of the four-way valve (2) is communicated with the first outlet b of the four-way valve (2), a second outlet c of the four-way valve (2) is communicated with an inlet of the compressor (1), a second inlet d of the four-way valve (2) is communicated with an outlet of the condenser (3), a second inlet d of the four-way valve (2) is communicated with a second outlet c of the four-way valve (2), an outlet of the one-way valve (12) is communicated with a refrigerant inlet of the coaxial heat exchanger (9), and a refrigerant outlet of the coaxial heat exchanger (9) is communicated with an; the water receiving tank (8) is arranged below the evaporator (7) and used for receiving water falling from the evaporator (7), the water receiving tank (8) is communicated with the water storage tank (11), a water outlet pipe (111) of the water storage tank (11) is communicated with a water inlet of the coaxial heat exchanger (9), a water outlet of the coaxial heat exchanger (9) is communicated with a water inlet of the spray pipe (13), and a water outlet of the spray pipe (13) faces the evaporator (7) and is used for defrosting; the water pump (10) is arranged on the water outlet pipe (111).
2. The defrosting system of an air-source heat pump evaporator according to claim 1, wherein a water drainage pipe (81) is arranged at the bottom of the water receiving tank (8), and the water outlet of the water drainage pipe (81) is positioned in the water storage tank (11).
3. Defrost system of an air-source heat pump evaporator, according to claim 1, characterized in that several shower nozzles (6) are arranged at the outlet position of the shower pipe (13), all shower nozzles (6) facing the evaporator (7) for defrosting.
4. The defrosting system of an air-source heat pump evaporator according to claim 1, wherein an overflow vent (112) is provided at an upper portion of the water storage tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021522726.9U CN212566403U (en) | 2020-07-29 | 2020-07-29 | Defrosting system of air source heat pump evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021522726.9U CN212566403U (en) | 2020-07-29 | 2020-07-29 | Defrosting system of air source heat pump evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN212566403U true CN212566403U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021522726.9U Active CN212566403U (en) | 2020-07-29 | 2020-07-29 | Defrosting system of air source heat pump evaporator |
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| Country | Link |
|---|---|
| CN (1) | CN212566403U (en) |
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2020
- 2020-07-29 CN CN202021522726.9U patent/CN212566403U/en active Active
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