CN210512233U - Air source heat pump unit - Google Patents
Air source heat pump unit Download PDFInfo
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- CN210512233U CN210512233U CN201921142601.0U CN201921142601U CN210512233U CN 210512233 U CN210512233 U CN 210512233U CN 201921142601 U CN201921142601 U CN 201921142601U CN 210512233 U CN210512233 U CN 210512233U
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- heat pump
- pump unit
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Abstract
The utility model discloses an air source heat pump unit, which belongs to the technical field of heat pumps; the air source heat pump unit system has a simple structure and high defrosting efficiency; the technical scheme is as follows: the air source heat pump unit is characterized in that a temperature sensor of the air source heat pump unit is arranged on an air-cooled evaporator, the temperature sensor is connected with the input end of a controller, the output end of the controller is connected with the control end of a four-way valve, the condenser end of the four-way valve is communicated with a refrigerant inlet of a plate-type condenser, the refrigerant outlet of the plate-type condenser is divided into two paths, and one path of the air source heat pump unit is connected with the evaporator end of the four-way valve after sequentially passing through a first one-way valve, a liquid storage tank, a drying filter; the other path of the pipeline sequentially passes through a first thermostatic expansion valve and a first electromagnetic valve through a pipeline and is communicated with an outlet side pipeline of the drying filter; a second one-way valve is arranged between the outlet end of the first one-way valve and the outlet end of the second thermostatic expansion valve; the utility model discloses can be used in cooling, heat supply field.
Description
Technical Field
The utility model discloses air source heat pump set belongs to heat pump technical field.
Background
A heat pump is a device that uses high-level energy to cause energy to flow from a low-level heat source to a high-level heat source. Heat pumps may extract heat energy from low temperature heat sources for heating. The heat pump is an energy-saving device, so the heat pump is popularized and used in a large range at present. The air source heat pump can transfer heat in the air to water to realize hot water preparation. However, when the outdoor temperature is low in winter, the evaporation temperature of the working medium in the outdoor heat exchanger is also low, and when the surface temperature of the outdoor heat exchanger is lower than 0 ℃ and lower than the dew-point temperature of air, moisture in the air is condensed to frost on the surface of the heat exchanger, so that the heating performance coefficient and the reliability of the air source heat pump are reduced. As the amount of frost increases, the heat transfer resistance of the evaporator increases and the resistance of the air passing through the evaporator also increases, thereby reducing the amount of air passing through the evaporator, resulting in a reduction in the amount of heat absorbed by the evaporator and, as a result, a reduction in the heat supply and coefficient of performance of the heat pump. If defrosting is not clear, the frosting amount is increased, and the air channel of the evaporator is possibly blocked completely, so that the heat pump cannot supply heat normally.
SUMMERY OF THE UTILITY MODEL
The utility model discloses air source heat pump set has overcome the not enough of prior art existence, provides a simple structure, efficient air source heat pump set system defrosts.
In order to solve the technical problem, the utility model discloses a technical scheme be: an air source heat pump unit comprises a four-way valve, a plate-type condenser, a first one-way valve, a liquid storage tank, a first thermal expansion valve, a drying filter, a compressor, a temperature sensor and an air-cooled evaporator, the temperature sensor is arranged on the air-cooled evaporator and connected with the input end of the controller, the output end of the controller is connected with the control end of the four-way valve, a compressor air suction port is connected with an air suction end of the four-way valve, a compressor exhaust port is connected with an exhaust end of the four-way valve, a condenser end of the four-way valve is communicated with a refrigerant inlet of a plate-type condenser, a refrigerant outlet of the plate-type condenser is divided into two paths, and one path of refrigerant passes through the first one-way valve, the liquid storage tank, the drying filter, the second electromagnetic valve, the second thermostatic expansion valve and the air-cooled evaporator in sequence through pipelines and then is connected with the evaporator end of the four-way valve; the other path of the pipeline sequentially passes through a first thermostatic expansion valve and a first electromagnetic valve through a pipeline and is communicated with an outlet side pipeline of the drying filter; and a second one-way valve is arranged between the outlet end of the first one-way valve and the outlet end of the second thermostatic expansion valve.
Furthermore, the air suction pipe end of the four-way valve is communicated with the air suction port of the compressor through an air-liquid separator, the air exhaust port of the compressor is communicated with the air exhaust end of the four-way valve through an oil separator, and the oil return port of the compressor is communicated with the oil separator through a fourth valve.
Further, a first valve is arranged between the outlet end of the first one-way valve and the outlet end of the second one-way valve, a second valve is arranged between the liquid storage tank and the drying filter, a third valve is arranged between the drying filter and the second electromagnetic valve, and a fifth valve is arranged between the air-cooled evaporator and the evaporator end of the four-way valve.
Further, the air-cooled evaporator comprises two V-shaped fin assemblies, and the two V-shaped fin assemblies are combined into a W shape.
Compared with the prior art, the utility model following beneficial effect has.
The utility model discloses utilize V type fin subassembly for the forced air cooling evaporimeter improves heat exchange efficiency. The utility model discloses can also switch by oneself under air mode and defrosting mode, degree of automation is higher, has improved the operational reliability of air source heat pump under the low temperature environment.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an appearance structure diagram of the compressor according to the embodiment of the present invention.
Fig. 3 is a schematic view of an appearance structure of an embodiment of the present invention.
Fig. 4 is a cross-sectional view a-a of fig. 3.
Fig. 5 is a schematic structural diagram of the embodiment of the present invention operating in the air source mode.
Fig. 6 is a schematic structural diagram of the embodiment of the present invention operating in the defrosting mode.
In the figure, 1-a four-way valve, 2-a plate condenser, 3-a water pump unit, 4-a first one-way valve, 5-a liquid storage tank, 6-an oil separator, 7-a gas-liquid separator, 8-a first thermal expansion valve, 9-a drying filter, 10-a compressor, 11-a temperature sensor, 12-an air cooling evaporator, 13-a second one-way valve, 14-a second thermal expansion valve, 15-a first electromagnetic valve, 16-a second electromagnetic valve, 17-a first valve, 18-a second valve, 19-a third valve, 20-a fourth valve, 21-a fifth valve, 22-a first cabinet, 23-a V-shaped fin component, 24-a second cabinet, 25-a fan, 61-a compressor exhaust port and 62-a compressor suction port, 63-compressor oil return.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 1 and figure 2, the utility model relates to an air source heat pump unit, including cross valve 1, plate condenser 2, first check valve 4, liquid storage pot 5, first thermal expansion valve 8, drier-filter 9, compressor 10, temperature sensor 11, air-cooled evaporator 12, second check valve 13, second thermal expansion valve 14, first solenoid valve 15, second solenoid valve 16 and controller, temperature sensor 11 sets up on air-cooled evaporator 12, temperature sensor 11 links to each other with the input of controller, the output of controller links to each other with the control end of cross valve 1, compressor induction port 62 links to each other with the induction end of cross valve 1, compressor gas vent 61 links to each other with the exhaust end of cross valve 1, the condenser end of cross valve 1 is linked to each other with plate condenser 2's refrigerant inlet, plate condenser 2's refrigerant export divides two the tunnel, pipeline is crossed according to the preface in the preface through first check valve 4 to one-way, The liquid storage tank 5, the drying filter 9, the second electromagnetic valve 16, the second thermostatic expansion valve 14 and the air-cooled evaporator 12 are connected with the evaporator end of the four-way valve 1; the other path is communicated with an outlet side pipeline of the drying filter 9 after sequentially passing through a first thermostatic expansion valve 8 and a first electromagnetic valve 15 through pipelines; a second one-way valve 13 is also arranged between the outlet end of the first one-way valve 4 and the outlet end of the second thermostatic expansion valve 14.
The suction pipe end of the four-way valve 1 is communicated with the compressor suction port 62 through the gas-liquid separator 7, the compressor discharge port 61 is communicated with the discharge end of the four-way valve 1 through the oil separator 6, and the compressor oil return port 63 is communicated with the oil separator 6 through the fourth valve 20.
A first valve 17 is arranged between the outlet end of the first one-way valve 4 and the outlet end of the second one-way valve 13, a second valve 18 is arranged between the liquid storage tank 5 and the drying filter 9, a third valve 19 is arranged between the drying filter 9 and the second electromagnetic valve 16, and a fifth valve 21 is arranged between the air-cooled evaporator 12 and the evaporator end of the four-way valve 1.
As shown in fig. 3, the oil separator 6, the gas-liquid separator 7, the liquid storage tank 5, the compressor 10, the first thermostatic expansion valve 8 and the drying filter 9 are disposed in the first cabinet 22, the second cabinet 24 is disposed adjacent to the side of the first cabinet 22, the air-cooled evaporator 12 is disposed in the second cabinet 24, the top of the second cabinet 24 is provided with a plurality of fans 25, and the motors in the fans 25 are connected to the output end of the controller through a forward/reverse rotation circuit. The controller may use a PLC controller. Both the first cabinet 22 and the second cabinet 24 may be disposed outdoors.
As shown in fig. 4, to improve the heat exchange efficiency, the air-cooled evaporator 12 includes two V-shaped fin assemblies 23, and the two V-shaped fin assemblies 23 are combined into a W shape.
The first valve 17, the second valve 18, the third valve 19, the fourth valve 20, and the fifth valve 21 all use ball valves. A water inlet pipe orifice of the plate type condenser 2 is connected with a water pump unit 3.
To the utility model discloses air source heat pump set's working process further explains: the utility model discloses can work in air source mode and defrosting mode to can realize automatic switch-over between two modes.
The air source mode is realized by the following steps:
in this mode, the pump unit 3 is operated to introduce a source of water, as shown in figure 5. The first solenoid valve 15 is closed and the second solenoid valve 16 is opened, and the solenoid of the four-way valve 1 is not energized. The compressor 10 is operated, and superheated refrigerant vapor at the compressor discharge port 61 enters from the discharge end D of the four-way valve 1 and flows out from the condenser end C, and enters the plate condenser 2 to heat low-temperature water, thereby generating high-temperature water. The refrigerant steam releases heat to become high-pressure refrigerant liquid, the high-pressure refrigerant liquid sequentially passes through the first one-way valve 4, the liquid storage tank 5, the second valve 18, the drying filter 9, the third valve 19 and the electromagnetic valve 16, is throttled by the second thermostatic expansion valve 14 to become low-temperature low-pressure gas-liquid two-phase refrigerant, cools air by the air-cooled evaporator 12, then the low-temperature refrigerant becomes low-temperature low-pressure refrigerant gas, enters the evaporator end of the four-way valve 1 after passing through the fifth valve 21, flows out of the air suction end of the four-way valve 1, passes through the gas-liquid separator 7 and enters the air suction port 62 of the compressor, and.
Fourthly, the implementation method of the defrosting mode is as follows:
as shown in fig. 6, if the controller detects that the operation time of the compressor 10 is greater than or equal to 40 minutes (which can be set) and the temperature measured by the temperature sensor 11 is less than or equal to-2 ℃ (which can be set), the controller makes the coil of the four-way valve 1 electrically connected, the first electromagnetic valve 15 opened, and the second electromagnetic valve 16 closed. The compressor 10 is operated, and the superheated refrigerant vapor at the compressor discharge port 61 enters from the discharge end D of the four-way valve 1, flows out from the evaporator end E, and enters the air-cooled evaporator 12 through the fifth valve 21 for defrosting. The refrigerant steam releases heat and becomes refrigerant liquid which sequentially passes through the second one-way valve 13, the first valve 17, the liquid storage tank 5, the second valve 18, the drying filter 9 and the first electromagnetic valve 15 and then passes through the first thermostatic expansion valve 8 to become low-temperature low-pressure gas-liquid two-phase refrigerant, the water is cooled through the plate condenser 2, and then flows into the condenser end C of the four-way valve 1, flows out from the air suction end S and flows into the air suction port 62 of the compressor through the gas-liquid separator 7, and the cycle of the defrosting mode is completed. If the temperature measured by the temperature sensor 11 is more than or equal to 15 ℃ (the temperature can be set), the controller makes the coil of the four-way valve 1 lose power and the first electromagnetic valve 15 close, opens the second electromagnetic valve 16, exits the defrosting mode, and enters the air source mode to operate.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. An air source heat pump unit, its characterized in that: comprises a four-way valve (1), a plate-type condenser (2), a first one-way valve (4), a liquid storage tank (5), a first thermal expansion valve (8), a drying filter (9), a compressor (10), a temperature sensor (11), an air-cooled evaporator (12), a second one-way valve (13), a second thermal expansion valve (14), a first electromagnetic valve (15), a second electromagnetic valve (16) and a controller, wherein the temperature sensor (11) is arranged on the air-cooled evaporator (12), the temperature sensor (11) is connected with the input end of the controller, the output end of the controller is connected with the control end of the four-way valve (1), a compressor suction port (62) is connected with the suction end of the four-way valve (1), a compressor exhaust port (61) is connected with the exhaust end of the four-way valve (1), the condenser end of the four-way valve (1) is communicated with the refrigerant inlet, the refrigerant outlet of the plate condenser (2) is divided into two paths, and one path of refrigerant passes through a first one-way valve (4), a liquid storage tank (5), a drying filter (9), a second electromagnetic valve (16), a second thermostatic expansion valve (14) and an air-cooled evaporator (12) in sequence through pipelines and then is connected with the evaporator end of the four-way valve (1); the other path is communicated with an outlet side pipeline of the drying filter (9) after sequentially passing through a first thermostatic expansion valve (8) and a first electromagnetic valve (15) through pipelines; and a second one-way valve (13) is arranged between the outlet end of the first one-way valve (4) and the outlet end of the second thermostatic expansion valve (14).
2. The air source heat pump unit of claim 1, wherein: the air suction pipe end of the four-way valve (1) is communicated with the air suction port (62) of the compressor through the gas-liquid separator (7), the air exhaust port (61) of the compressor is communicated with the air exhaust end of the four-way valve (1) through the oil separator (6), and the oil return port (63) of the compressor is communicated with the oil separator (6) through the fourth valve (20).
3. The air source heat pump unit of claim 1, wherein: a first valve (17) is arranged between the outlet end of the first one-way valve (4) and the outlet end of the second one-way valve (13), a second valve (18) is arranged between the liquid storage tank (5) and the drying filter (9), a third valve (19) is arranged between the drying filter (9) and the second electromagnetic valve (16), and a fifth valve (21) is arranged between the air-cooled evaporator (12) and the evaporator end of the four-way valve (1).
4. The air source heat pump unit of claim 1, wherein: the air-cooled evaporator (12) comprises two V-shaped fin assemblies (23), and the two V-shaped fin assemblies (23) are combined into a W shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921142601.0U CN210512233U (en) | 2019-07-20 | 2019-07-20 | Air source heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921142601.0U CN210512233U (en) | 2019-07-20 | 2019-07-20 | Air source heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210512233U true CN210512233U (en) | 2020-05-12 |
Family
ID=70584419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921142601.0U Expired - Fee Related CN210512233U (en) | 2019-07-20 | 2019-07-20 | Air source heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210512233U (en) |
-
2019
- 2019-07-20 CN CN201921142601.0U patent/CN210512233U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |