CN215260632U - Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom - Google Patents

Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom Download PDF

Info

Publication number
CN215260632U
CN215260632U CN202121137234.2U CN202121137234U CN215260632U CN 215260632 U CN215260632 U CN 215260632U CN 202121137234 U CN202121137234 U CN 202121137234U CN 215260632 U CN215260632 U CN 215260632U
Authority
CN
China
Prior art keywords
communicated
evaporator
way valve
liquid
supercooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202121137234.2U
Other languages
Chinese (zh)
Inventor
王新兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Jiumu New Energy Equipment Co ltd
Original Assignee
Guangdong Jiumu New Energy Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Jiumu New Energy Equipment Co ltd filed Critical Guangdong Jiumu New Energy Equipment Co ltd
Priority to CN202121137234.2U priority Critical patent/CN215260632U/en
Application granted granted Critical
Publication of CN215260632U publication Critical patent/CN215260632U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to an ultralow temperature heat pump changes in temperature unit of subcooled evaporator bottom, its technical scheme main points are: the air outlet end of the compressor is communicated with the first end of the four-way valve; the second end of the four-way valve is communicated with the air inlet of the water side heat exchanger; a liquid outlet of the water side heat exchanger is communicated with a first end of the check valve component; the second end of the one-way valve component is communicated with the liquid inlet of the liquid storage device; a liquid outlet of the liquid storage device is communicated with the first end of the economizer; the second end of the economizer is communicated with a liquid inlet of the evaporator supercooling mechanism; the third end of the economizer is communicated with an air supplement port of the compressor; a liquid outlet of the evaporator supercooling mechanism is communicated with a third end of the check valve assembly; the fourth end of the one-way valve assembly is communicated with the liquid inlet of the evaporator; the liquid outlet of the evaporator is communicated with the third end of the four-way valve; the fourth end of the four-way valve is communicated with a liquid inlet of the gas-liquid separator; the liquid outlet of the gas-liquid separator is communicated with the air suction port of the compressor; the application has the advantage of restraining the ultra-low temperature heating and freezing.

Description

Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom
Technical Field
The utility model relates to a heat pump equipment technical field, more specifically say, it relates to an ultralow temperature heat pump changes in temperature unit of subcooled evaporator bottom.
Background
The low-temperature air source heat pump unit is widely applied in recent years, can absorb abundant low-grade heat from the external low-temperature atmosphere to heat domestic water, has low operation cost, is very green and environment-friendly, and is favored by the majority of users.
At present, the ultra-low temperature heat pump on the market is easy to freeze in the heating process at ultra-low temperature, so there is still room for improvement.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an ultralow temperature heat pump changes in temperature unit of subcooled evaporator bottom has the advantage that restraines the ultralow temperature and heats and freeze.
The above technical purpose of the present invention can be achieved by the following technical solutions: an ultra-low temperature heat pump cooling and heating unit with supercooling at the bottom of an evaporator comprises: the system comprises a compressor, a gas-liquid separator, a four-way valve, a water side heat exchanger, a liquid storage device, an economizer, an evaporator supercooling mechanism and a one-way valve assembly; the air outlet end of the compressor is communicated with the first end of the four-way valve; the second end of the four-way valve is communicated with the air inlet of the water side heat exchanger; a liquid outlet of the water side heat exchanger is communicated with a first end of the one-way valve assembly; the second end of the one-way valve assembly is communicated with the liquid inlet of the liquid storage device; a liquid outlet of the liquid storage device is communicated with the first end of the economizer; the second end of the economizer is communicated with a liquid inlet of the evaporator supercooling mechanism; the third end of the economizer is communicated with the gas supplementing port of the compressor; a liquid outlet of the evaporator supercooling mechanism is communicated with a third end of the one-way valve assembly; the fourth end of the one-way valve assembly is communicated with the liquid inlet of the evaporator; the liquid outlet of the evaporator is communicated with the third end of the four-way valve; the fourth end of the four-way valve is communicated with a liquid inlet of the gas-liquid separator; and the liquid outlet of the gas-liquid separator is communicated with the air suction port of the compressor.
Optionally, the solenoid valve, the capillary tube and the main path expansion valve; a liquid outlet of the evaporator supercooling mechanism is communicated with a third end of the one-way valve assembly through a main path expansion valve; and a liquid outlet of the evaporator supercooling mechanism is communicated with the third end of the one-way valve assembly sequentially through the electromagnetic valve and the capillary tube.
Optionally, a high-voltage switch is arranged at the air outlet end of the compressor; and the air outlet end of the compressor is communicated with the first end of the four-way valve through the high-voltage switch.
Optionally, a low-pressure switch is arranged at the air suction port of the compressor; and the fourth end of the four-way valve is communicated with the air suction port of the compressor through the low-voltage switch.
Optionally, a filter is arranged at the liquid outlet of the water side heat exchanger; and a liquid outlet of the water side heat exchanger is communicated with the first end of the one-way valve assembly through the filter.
Optionally, an auxiliary expansion valve is arranged at the fourth end of the economizer; and the fourth end of the economizer is communicated with a liquid outlet of the evaporator supercooling mechanism through an auxiliary expansion valve.
To sum up, the utility model discloses following beneficial effect has: in a heating mode, a compressor compresses a refrigerant into high-temperature and high-pressure refrigerant steam, the refrigerant steam enters a water side heat exchanger through a first end of a four-way valve and a second end of the four-way valve, the refrigerant steam and water in the water side heat exchanger exchange heat to heat heating hot water, then a medium-temperature and high-pressure liquid refrigerant is obtained and enters a one-way valve assembly, the medium-temperature and high-pressure liquid refrigerant enters a liquid reservoir through a first end of the one-way valve assembly and a second end of the one-way valve assembly to be primarily cooled and then enters an economizer, at the moment, a higher-temperature gaseous refrigerant enters the compressor through a third end of the economizer, and a lower-temperature liquid refrigerant enters an evaporator supercooling mechanism, so that the temperature of the evaporator is maintained, and ultralow-temperature heating and freezing are inhibited; wherein, the evaporator supercooling mechanism is a supercooling pipe at the bottom of the evaporator; after the liquid refrigerant passes through the evaporator filtering mechanism, the liquid refrigerant passes through the one-way valve assembly again and enters the evaporator through the one-way valve assembly to be evaporated into low-pressure refrigerant steam, and then the low-pressure refrigerant steam enters the gas-liquid separator through the third end and the fourth end of the four-way valve to be subjected to gas-liquid separation and returns to the suction port of the compressor, so that the circulation can be completed; in the refrigeration and defrosting mode, high-temperature and high-pressure refrigerant steam passes through the first end and the third end of the four-way valve from the compressor and then enters the evaporator for condensation, thereby defrosting outside the evaporator, enters the liquid storage device through the one-way valve assembly after being condensed, enters the one-way valve assembly through the main expansion valve, the electromagnetic valve and the capillary after sequentially passing through the economizer and the evaporator supercooling mechanism, then enters the water side heat exchanger through the one-way valve assembly to be evaporated into low-pressure refrigerant steam, absorbs the temperature in the water side heat exchanger to achieve the refrigeration purpose, finally returns to the gas-liquid separator through the second end and the fourth end of the four-way valve and returns to the compressor. The electromagnetic valve, the capillary tube and the main path expansion valve can throttle the refrigerant, so that the refrigerant can fully exchange heat in the water side heat exchanger.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a compressor; 2. a gas-liquid separator; 3. a four-way valve; 4. a water side heat exchanger; 5. a reservoir; 6. an economizer; 7. an evaporator; 8. an evaporator subcooling mechanism; 9. a one-way valve assembly; 10. an electromagnetic valve; 11. a capillary tube; 12. a main path expansion valve; 13. a filter; 14. and a bypass expansion valve.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced device or element must be in a particular orientation, constructed and operated, and therefore should not be construed as limiting the present invention.
The present invention will be described in detail with reference to the accompanying drawings and examples.
The utility model provides an ultralow temperature heat pump cooling and heating unit of supercooling bottom of evaporator, as shown in figure 1, include: the system comprises a compressor 1, a gas-liquid separator 2, a four-way valve 3, a water side heat exchanger 4, a liquid storage device 5, an economizer 6, an evaporator 7, an evaporator supercooling mechanism 8 and a one-way valve assembly 9; the air outlet end of the compressor 1 is communicated with the first end of the four-way valve 3; the second end of the four-way valve 3 is communicated with the air inlet of the water side heat exchanger 4; a liquid outlet of the water side heat exchanger 4 is communicated with a first end of the check valve assembly 9; the second end of the one-way valve assembly 9 is communicated with the liquid inlet of the liquid accumulator 5; a liquid outlet of the liquid storage device 5 is communicated with a first end of the economizer 6; the second end of the economizer 6 is communicated with a liquid inlet of the evaporator supercooling mechanism 8; the third end of the economizer 6 is communicated with the air supplement port of the compressor 1; a liquid outlet of the evaporator supercooling mechanism 8 is communicated with a third end of the one-way valve assembly 9; the fourth end of the one-way valve assembly 9 is communicated with the liquid inlet of the evaporator 7; a liquid outlet of the evaporator 7 is communicated with a third end of the four-way valve 3; the fourth end of the four-way valve 3 is communicated with the liquid inlet of the gas-liquid separator 2; and the liquid outlet of the gas-liquid separator 2 is communicated with the air suction port of the compressor 1. The check valve assembly 9 adopts four check valves connected in parallel, and the one-way conduction direction is as shown in fig. 1.
In a heating mode, the compressor 1 compresses a refrigerant into high-temperature and high-pressure refrigerant steam, the refrigerant steam enters the water-side heat exchanger 4 through the first end of the four-way valve 3 and the second end of the four-way valve 3, the refrigerant steam and water exchange heat in the water-side heat exchanger 4 to heat heating hot water, then a medium-temperature and high-pressure liquid refrigerant is obtained and enters the check valve assembly 9, the medium-temperature and high-pressure liquid refrigerant enters the liquid reservoir 5 through the first end of the check valve assembly 9 and the second end of the check valve assembly 9 to be primarily cooled and then enters the economizer 6, at the moment, a gas refrigerant with higher temperature enters the compressor 1 through the third end of the economizer 6, and a liquid refrigerant with lower temperature enters the evaporator supercooling mechanism 8, so that the temperature of the evaporator 7 is kept, and ultralow-temperature heating and freezing are inhibited; wherein, the evaporator supercooling mechanism 8 is a supercooling pipe at the bottom of the evaporator 7; after the liquid refrigerant passes through the evaporator 7 filtering mechanism, the liquid refrigerant passes through the check valve assembly 9 again, enters the evaporator 7 through the check valve assembly 9 and is evaporated into low-pressure refrigerant steam, and then the low-pressure refrigerant steam enters the gas-liquid separator 2 through the third end and the fourth end of the four-way valve 3 to be subjected to gas-liquid separation and returns to the suction port of the compressor 1, so that the circulation can be completed.
Further, still include: a solenoid valve 10, a capillary tube 11 and a main path expansion valve 12; the liquid outlet of the evaporator supercooling mechanism 8 is communicated with the third end of the one-way valve assembly 9 through a main expansion valve 12; and a liquid outlet of the evaporator supercooling mechanism 8 is communicated with a third end of the one-way valve assembly 9 sequentially through the electromagnetic valve 10 and the capillary tube 11.
In the refrigeration and defrosting mode, high-temperature and high-pressure refrigerant steam passes through the first end and the third end of the four-way valve 3 from the compressor 1 and then enters the evaporator 7 for condensation, thereby defrosting outside the evaporator 7, the condensed refrigerant steam enters the liquid storage device 5 through the check valve assembly 9, and then enters the check valve assembly 9 through the main expansion valve 12, the electromagnetic valve 10 and the capillary tube 11 after sequentially passing through the economizer 6 and the evaporator supercooling mechanism 8, and then enters the water side heat exchanger 4 through the check valve assembly 9 to be evaporated into low-pressure refrigerant steam, so that the temperature in the water side heat exchanger 4 is absorbed, the refrigeration purpose is achieved, and finally the refrigerant steam returns to the gas-liquid separator 2 through the second end and the fourth end of the four-way valve 3 and returns to the compressor 1. The solenoid valve 10, the capillary tube 11, and the main expansion valve 12 can throttle the refrigerant, so that the refrigerant can sufficiently exchange heat in the water-side heat exchanger 4.
Optionally, a high-voltage switch is arranged at the air outlet end of the compressor 1; and the air outlet end of the compressor 1 is communicated with the first end of the four-way valve 3 through the high-voltage switch. A low-pressure switch is arranged at the air suction port of the compressor 1; and the fourth end of the four-way valve 3 is communicated with the air suction port of the compressor 1 through the low-voltage switch. Through setting up high-voltage switch and low-voltage switch, can make things convenient for opening of heat pump changes in temperature unit to stop.
Further, a filter 13 is arranged at the liquid outlet of the water side heat exchanger 4; the liquid outlet of the water side heat exchanger 4 is communicated with the first end of the one-way valve assembly 9 through the filter 13. The filter 13 can filter the refrigerant.
Further, a fourth end of the economizer 6 is provided with an auxiliary expansion valve 14; and the fourth end of the economizer 6 is communicated with a liquid outlet of the evaporator supercooling mechanism 8 through an auxiliary expansion valve 14. The auxiliary expansion valve 14 can throttle the refrigerant into a medium-pressure liquid state, absorb heat through the economizer 6, evaporate the refrigerant into medium-pressure vapor, and return the vapor to the compressor 1.
The utility model discloses an ultralow temperature heat pump changes in temperature unit of subcooled evaporator bottom can promote the performance of heating, and it freezes to restrain the ultralow temperature to heat, promotes system refrigeration performance.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. An ultralow temperature heat pump cooling and heating unit with supercooling at the bottom of an evaporator is characterized by comprising: the system comprises a compressor, a gas-liquid separator, a four-way valve, a water side heat exchanger, a liquid storage device, an economizer, an evaporator supercooling mechanism and a one-way valve assembly; the air outlet end of the compressor is communicated with the first end of the four-way valve; the second end of the four-way valve is communicated with the air inlet of the water side heat exchanger; a liquid outlet of the water side heat exchanger is communicated with a first end of the one-way valve assembly; the second end of the one-way valve assembly is communicated with the liquid inlet of the liquid storage device; a liquid outlet of the liquid storage device is communicated with the first end of the economizer; the second end of the economizer is communicated with a liquid inlet of the evaporator supercooling mechanism; the third end of the economizer is communicated with the gas supplementing port of the compressor; a liquid outlet of the evaporator supercooling mechanism is communicated with a third end of the one-way valve assembly; the fourth end of the one-way valve assembly is communicated with the liquid inlet of the evaporator; the liquid outlet of the evaporator is communicated with the third end of the four-way valve; the fourth end of the four-way valve is communicated with a liquid inlet of the gas-liquid separator; and the liquid outlet of the gas-liquid separator is communicated with the air suction port of the compressor.
2. An ultra-low temperature heat pump cooling and heating unit with supercooling at the bottom of the evaporator according to claim 1, further comprising: the system comprises an electromagnetic valve, a capillary tube and a main path expansion valve; a liquid outlet of the evaporator supercooling mechanism is communicated with a third end of the one-way valve assembly through a main path expansion valve; and a liquid outlet of the evaporator supercooling mechanism is communicated with the third end of the one-way valve assembly sequentially through the electromagnetic valve and the capillary tube.
3. An ultralow temperature heat pump cooling and heating unit with supercooling at the bottom of the evaporator according to claim 2, wherein a high-pressure switch is arranged at the air outlet end of the compressor; and the air outlet end of the compressor is communicated with the first end of the four-way valve through the high-voltage switch.
4. An ultralow temperature heat pump cooling and heating unit with supercooling at the bottom of the evaporator according to claim 3, wherein a low pressure switch is arranged at the air suction port of the compressor; and the fourth end of the four-way valve is communicated with the air suction port of the compressor through the low-voltage switch.
5. An ultralow temperature heat pump cooling and heating unit with supercooling at the bottom of an evaporator according to claim 1, wherein a filter is arranged at a liquid outlet of the water side heat exchanger; and a liquid outlet of the water side heat exchanger is communicated with the first end of the one-way valve assembly through the filter.
6. An ultra-low temperature heat pump cooling and heating unit with supercooling at the bottom of the evaporator as claimed in claim 1, wherein the economizer is provided with an auxiliary expansion valve at the fourth end; and the fourth end of the economizer is communicated with a liquid outlet of the evaporator supercooling mechanism through an auxiliary expansion valve.
CN202121137234.2U 2021-05-25 2021-05-25 Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom Active CN215260632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121137234.2U CN215260632U (en) 2021-05-25 2021-05-25 Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121137234.2U CN215260632U (en) 2021-05-25 2021-05-25 Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom

Publications (1)

Publication Number Publication Date
CN215260632U true CN215260632U (en) 2021-12-21

Family

ID=79458249

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121137234.2U Active CN215260632U (en) 2021-05-25 2021-05-25 Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom

Country Status (1)

Country Link
CN (1) CN215260632U (en)

Similar Documents

Publication Publication Date Title
CN103148629B (en) Gas-liquid phase ejector synergy refrigeration system for double temperature direct cooling-type refrigerator
CN103900289B (en) The system and method for solid dehumidifying prevention air source hot pump water heater frosting
CN103900310B (en) The system and method for solution dehumidification prevention air source hot pump water heater frosting
CN101482321B (en) Ultra-low temperature heat pump water heater
CN204202062U (en) With the water-cooled cooling water air conditioner unit of ice-reserving function
CN101487643A (en) Ultra-low temperature heat pump air conditioning system
CN103615838B (en) The cooling/heating system that internal-external heat exchanger device volumetric ratio is variable
CN201034400Y (en) Defrosting device of air source heat pump water heater
CN215260632U (en) Ultralow temperature heat pump cooling and heating unit with supercooling evaporator bottom
CN212205141U (en) Low-ring-temperature air source heat pump system adopting double supercooling modes
CN201497096U (en) Damp-heat energy negative pressure cooling refrigerator
CN209763527U (en) Low-pressure bypass device of flash drum of air source screw cold water heat pump unit
CN201100783Y (en) Thermal pump unit with electronic swelling valve and capillary flow saving device
CN110243083A (en) A kind of accumulating type high-efficiency air source solar energy composite heat pump water heater
CN102494375A (en) Ultrahigh and low-temperature refrigerating, heating and water heating three-purpose air-conditioning system
CN101799224B (en) Low-temperature cooling, heating and water heating tri-purpose air-conditioning system
CN215675710U (en) Heat recovery type split air conditioner
CN104930740B (en) Dual-evaporator refrigeration system
CN106705494A (en) Air source heat pump energy conservation system with function of preventing air side heat exchanger from freezing
CN215675892U (en) Enhanced vapor injection split air conditioning system
CN211345918U (en) Refrigerating system
CN211926193U (en) Air source heat pump system convenient to chassis deicing just improves heating capacity
CN212057818U (en) Carbon dioxide cascade refrigeration system with total heat recovery
CN210154113U (en) Solar energy-air double heat source heat pump water heater with heat storage function
CN211120091U (en) Cascade refrigeration system with supercooling and injection depressurization

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant