CN202470542U - Heat-pump system of low-temperature air heat source - Google Patents
Heat-pump system of low-temperature air heat source Download PDFInfo
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- CN202470542U CN202470542U CN2012200838087U CN201220083808U CN202470542U CN 202470542 U CN202470542 U CN 202470542U CN 2012200838087 U CN2012200838087 U CN 2012200838087U CN 201220083808 U CN201220083808 U CN 201220083808U CN 202470542 U CN202470542 U CN 202470542U
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Abstract
The utility model relates to a heat-pump system of a low-temperature air heat source. The system comprises a compressor, a four-way change valve, a condensing heat exchanger, a liquid reservoir, an electromagnetic valve, a second throttle device, a middle heat exchanger, a first throttle device, an evaporation heat exchanger and a gas-liquid separator. The heat-pump system has the following beneficial effects that relatively enough heat can be provided by the system when auxiliary electric heating is not performed, the system can be stably operated and keeps relatively enough refrigerating fluid flow rate under a low-temperature environment, enough heat can be provided, the phenomenon that liquid is sucked and contained during compression is avoided, the phenomenon of liquid strike is avoided, and tests show that the heat-pump system of the air heat source can normally provide enough heat at the temperature of minus 15 DEG C; and auxiliary electric heating is not needed, so that the potential safety hazard caused by the auxiliary electric heating is avoided.
Description
Technical field
The utility model relates to a kind of heat pump, relate in particular to a kind of can even running below cold environmental conditions and keep heating efficiently.
Background technology
Heat pump is a kind of with a kind of heating of condenser liberated heat to air or water heat supply.What heat pump mainly used is contrary Carnot cycle law, and it is the main circulation law form of refrigeration machine, is conceived to air-conditioning and passes through the exchange heat between the condenser and the external world in the system high pressure side.One of apparatus-form of heat pump and air exchange heat, with its environmentally safe and absorb heat in the air-energy as thermal source, characteristics such as easy for installation have obtained extensive use in a lot of fields.
The air heat source and thermal pump system as thermal source, provides that thermal source exchanges in the air with the heat in the environment to heat pump.The air heat source and thermal pump system provides heat to change with the change of outdoor air ambient parameter to being conditioned object.The air heat source and thermal pump system is in practical application; To run into the problem of two aspects inevitably: the one, along with the decline evaporimeter heat of outside air temperature reduces thereupon; Compressor exhaust temperature begins to increase; The beginning of the gaseous refrigerant that compressor sucks reduces, and the circular flow of heat pump internal refrigeration storage agent reduces, the problem that causes heat pump to reduce to the heat that provided by thermal source; The 2nd, when outdoor dry-bulb temperature is low, very general of the outdoor heat exchanger fin surface frosting phenomenon of air heat source and thermal pump system, need take electric heater is the problem of auxiliary thermal source, uses consumes energy huge in this case.
The utility model content
The purpose of the utility model is to provide a kind of air heat source and thermal pump system, and when solving existing air heat source and thermal pump system and under the environment of lower temperature, moving, the inspiratory capacity deficiency can not even running and keep problem efficiently.
The utility model is realized through following technical scheme:
Cryogenic air heat source heat pump system, this system comprises: compressor, four-way change-over valve, condensing heat exchanger, liquid reservoir, magnetic valve, second throttling arrangement, Intermediate Heat Exchanger, first throttle device, evaporating heat exchanger, gas-liquid separator.Blast pipe at compressor is connected with the air inlet of four-way change-over valve; The gas vent of four-way change-over valve is connected with the import of condensing heat exchanger; The outlet of condensing heat exchanger is connected with the import of reservoir; The outlet of reservoir is divided into two, and the import with magnetic valve 9 imports and Intermediate Heat Exchanger 5 is connected respectively.The liquid outlet of magnetic valve 9 is connected with the import of second throttling arrangement, and the jet exit of second throttling arrangement is connected with the import of Intermediate Heat Exchanger 5, and the outlet of Intermediate Heat Exchanger 5 is connected with compressor air injection enthalpy-increasing mouth.The bifurcations of reservoir 6 is connected with the inlet of Intermediate Heat Exchanger; The liquid outlet of Intermediate Heat Exchanger is connected with the import of first throttle device; The outlet of first throttle device is connected with the import of evaporating heat exchanger 3; The outlet of evaporating heat exchanger is connected with the import of gas-liquid separator, and the outlet of gas-liquid separator is connected with the return-air mouth of compressor, forms the low-temperature heating circulatory system thus.
Operation principle: the gas that said compressor is discharged HTHP through compression freon passes through four-way change-over valve; Described four-way change-over valve passed through described condensing heat exchanger before not taking place to flow to change; Said condensing heat exchanger is with water or air during as medium; Carry out thermal source and shift the liquid condition that becomes cryogenic high pressure; The liquid of cryogenic high pressure is stored in the liquid of described condensing heat exchanger in the described liquid reservoir; The liquid of cryogenic high pressure flows to first throttle device expenditure and pressure through said Intermediate Heat Exchanger and ejects gas liquid mixture and absorb airborne low-temperature heat source at evaporating heat exchanger and exchange, and becomes the gas flow gas-liquid separator of low-temp low-pressure, and said gas-liquid separator reaches the purpose that heats through also having the circulation repeatedly that returns said compressor behind the remaining liquid in the divided gas flow.The duty of the Intermediate Heat Exchanger that key technology is of the Cryogenic air heat source heat pump system of this air heat source and thermal pump system, magnetic valve, second throttling arrangement changes the system physical state; Thereby obtain increasing the next in liberal supply heat of inspiratory capacity of compressor, locking system can provide the main purpose of thermal source efficiently under the environment of low temperature.
The utlity model has following beneficial effect: this system can provide the comparison sufficient amount of heat under the situation that electricity consumption is assisted; This system can even running and keeps the sufficient refrigerant flow of comparison under cold environmental conditions; Sufficient amount of heat can be provided, avoid compression to suck and compress being embedded the liquid phenomenon, avoid the generation of liquid hit phenomenon; Through measuring, this air heat source and thermal pump system can normally provide sufficient amount of heat at subzero 15 ℃; Native system has been avoided use auxiliary electrical heating, thereby has avoided the security hidden danger brought thus.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: 1, compressor; 2, condensing heat exchanger; 3, evaporating heat exchanger; 4, four-way change-over valve; 5, Intermediate Heat Exchanger; 6, reservoir; 7, first throttle device; 8, second throttling arrangement; 9, magnetic valve; 10, gas-liquid separator.
The specific embodiment
As shown in Figure 1, Cryogenic air heat source heat pump system comprises compressor 1, four-way change-over valve 4, condensing heat exchanger 2, liquid reservoir 6, magnetic valve 9, second throttling arrangement 8, Intermediate Heat Exchanger 5, first throttle device 7, evaporating heat exchanger 3, gas-liquid separator 10.Blast pipe at compressor 1 is connected with the air inlet of four-way change-over valve 4; The gas vent of four-way change-over valve 4 is connected with the import of condensing heat exchanger 2; The outlet of condensing heat exchanger 2 is connected with the import of reservoir 6; The outlet of reservoir 6 is divided into two, and the import with magnetic valve 9 imports and Intermediate Heat Exchanger 5 is connected respectively.The liquid outlet of magnetic valve 9 is connected with the import of second throttling arrangement 8, and the jet exit of second throttling arrangement 8 is connected with the import of Intermediate Heat Exchanger 5, and the outlet of Intermediate Heat Exchanger 5 is connected with compressor air injection enthalpy-increasing mouth.The bifurcations of reservoir 6 is connected with the inlet of Intermediate Heat Exchanger; The liquid outlet of Intermediate Heat Exchanger is connected with 7 imports of first throttle device; The outlet of first throttle device 7 is connected with the import of evaporating heat exchanger 3; The outlet of evaporating heat exchanger 3 is connected with the import of gas-liquid separator 10, and the outlet of gas-liquid separator 10 is connected with the return-air mouth of compressor 1, forms the low-temperature heating circulatory system thus.The gas that said compressor 1 is discharged HTHP through compression freon passes through four-way change-over valve 4; Described four-way change-over valve 4 passed through described condensing heat exchanger 2 before not taking place to flow to change; Said condensing heat exchanger 2 is with water or air during as medium; Carry out thermal source and shift the liquid condition that becomes cryogenic high pressure; The liquid of cryogenic high pressure is stored in the liquid of described condensing heat exchanger 2 in the described reservoir 6; The liquid of cryogenic high pressure flows to first throttle device 7 expenditure and pressures through said Intermediate Heat Exchanger 5 and ejects gas liquid mixture and absorb airborne low-temperature heat source at evaporating heat exchanger 3 and exchange, and becomes the gas flow gas-liquid separator 10 of low-temp low-pressure, and said gas-liquid separator 10 reaches the purpose that heats through also having the circulation repeatedly that returns said compressor 1 behind the remaining liquid in the divided gas flow.The duty of the Intermediate Heat Exchanger that key technology is 5 of the Cryogenic air heat source heat pump system of this air heat source and thermal pump system, magnetic valve 9, second throttling arrangement 8 changes the system physical state; Thereby obtain increasing the next in liberal supply heat of inspiratory capacity of compressor, locking system can provide the main purpose of thermal source efficiently under the environment of low temperature.
Claims (1)
1. Cryogenic air heat source heat pump system, it is characterized in that: this system comprises: compressor, four-way change-over valve, condensing heat exchanger, liquid reservoir, magnetic valve, second throttling arrangement, Intermediate Heat Exchanger, first throttle device, evaporating heat exchanger, gas-liquid separator; Blast pipe at compressor is connected with the air inlet of four-way change-over valve; The gas vent of four-way change-over valve is connected with the import of condensing heat exchanger; The outlet of condensing heat exchanger is connected with the import of reservoir; The outlet of reservoir is divided into two, and the import with magnetic valve import and Intermediate Heat Exchanger is connected respectively; The liquid outlet of magnetic valve is connected with the import of second throttling arrangement, and the jet exit of second throttling arrangement is connected with the import of Intermediate Heat Exchanger, and the outlet of Intermediate Heat Exchanger is connected with compressor air injection enthalpy-increasing mouth; The bifurcations of reservoir is connected with the inlet of Intermediate Heat Exchanger; The liquid outlet of Intermediate Heat Exchanger is connected with the import of first throttle device; The outlet of first throttle device is connected with the import of evaporating heat exchanger; The outlet of evaporating heat exchanger is connected with the import of gas-liquid separator, and the outlet of gas-liquid separator is connected with the return-air mouth of compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200838087U CN202470542U (en) | 2012-03-07 | 2012-03-07 | Heat-pump system of low-temperature air heat source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200838087U CN202470542U (en) | 2012-03-07 | 2012-03-07 | Heat-pump system of low-temperature air heat source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202470542U true CN202470542U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200838087U Expired - Lifetime CN202470542U (en) | 2012-03-07 | 2012-03-07 | Heat-pump system of low-temperature air heat source |
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| CN (1) | CN202470542U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925643A (en) * | 2013-01-16 | 2014-07-16 | 珠海格力电器股份有限公司 | Air conditioning device and control method thereof |
| CN107504729A (en) * | 2017-07-31 | 2017-12-22 | 广东美的暖通设备有限公司 | For controlling the method, apparatus and storage medium of air injection enthalpy-increasing system expansion valve |
-
2012
- 2012-03-07 CN CN2012200838087U patent/CN202470542U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925643A (en) * | 2013-01-16 | 2014-07-16 | 珠海格力电器股份有限公司 | Air conditioning device and control method thereof |
| CN103925643B (en) * | 2013-01-16 | 2016-12-28 | 珠海格力电器股份有限公司 | Air conditioning device and control method thereof |
| CN107504729A (en) * | 2017-07-31 | 2017-12-22 | 广东美的暖通设备有限公司 | For controlling the method, apparatus and storage medium of air injection enthalpy-increasing system expansion valve |
| CN107504729B (en) * | 2017-07-31 | 2020-03-17 | 广东美的暖通设备有限公司 | Method, device and storage medium for controlling expansion valve of enhanced vapor injection system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |