CN110701815A - Evaporation type heat pump unit - Google Patents
Evaporation type heat pump unit Download PDFInfo
- Publication number
- CN110701815A CN110701815A CN201910962327.XA CN201910962327A CN110701815A CN 110701815 A CN110701815 A CN 110701815A CN 201910962327 A CN201910962327 A CN 201910962327A CN 110701815 A CN110701815 A CN 110701815A
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- China
- Prior art keywords
- heat exchanger
- air
- refrigerant
- heat pump
- pump unit
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an evaporative heat pump unit which comprises a compressor, a four-way reversing valve, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor comprises a gas suction end and a gas discharge end, four ports of the four-way reversing valve are respectively connected to the gas suction end, the gas discharge end, the indoor heat exchanger and the outdoor heat exchanger of the compressor, and an air humidifying device is arranged at an air inlet part of the outdoor heat exchanger of the evaporative heat pump. Therefore, the evaporative heat pump unit greatly improves the heat absorption capacity of outdoor air in summer, controls the condensation temperature to be lower, ensures the efficiency of a refrigerating system, and avoids the problem of scaling and aging of the outdoor heat exchanger caused by spraying water to the outdoor heat exchanger.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to an evaporative heat pump unit.
Background
At present, the well-known air conditioner with double functions of refrigeration and heating is called a heat pump in the industry, and the common air-cooled heat pump comprises an indoor heat exchanger and an outdoor heat exchanger, wherein the indoor heat exchanger adopts a shell-and-tube type, a sleeve-type or a plate type heat exchanger, and the outdoor heat exchanger adopts a finned tube type air-cooled heat exchanger.
When the air conditioner runs in summer, the outdoor heat exchanger is used as a condenser, and the indoor heat exchanger is used as an evaporator;
when operating in winter, the outdoor heat exchanger serves as an evaporator, and the indoor heat exchanger serves as a condenser.
When the system operates in summer, the outdoor heat exchanger, namely a condenser of the system, needs to exchange heat with the outside air, so that the gaseous refrigerant in the system releases heat and condenses into liquid, the outside air absorbs and takes away the heat released by the refrigerant, but the heat absorbed and taken away by the outside air is little under the influence of high outdoor temperature, so that the condensing temperature of the refrigerant in the system is high, and the refrigerating capacity of the system is greatly reduced; at present, a common method for solving the problems is to spray water onto the outdoor heat exchanger, and improve the working efficiency of the system in a way of evaporating and absorbing heat of the water, but the way easily causes the consequences of scaling of the outdoor heat exchanger, accelerating aging of the outdoor heat exchanger and the like.
Disclosure of Invention
Aiming at the defects of the technical problems, the invention provides an evaporative heat pump unit. The air-cooled heat pump system can solve the problems of poor refrigeration effect and heat exchanger scaling and aging caused by a water spraying mode in the high temperature in summer of the conventional air-cooled heat pump system.
The technical scheme for solving the technical problems is as follows: the evaporative heat pump unit comprises a compressor, a four-way reversing valve, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor comprises an air suction end and an air exhaust end, four ports of the four-way reversing valve are respectively connected to the air suction end, the air exhaust end, the indoor heat exchanger and the outdoor heat exchanger of the compressor, and an air humidifying device is arranged at an air inlet part of the outdoor heat exchanger of the evaporative heat pump.
The outdoor heat exchanger is used as a condenser when the heat exchanger is used for refrigerating the heat pump system; the outdoor heat exchanger serves as an evaporator when the heat pump system is heating.
The air conditioner has the advantages that after air entering the outdoor heat exchanger passes through the humidifying device, air humidity is improved, condensation temperature of the refrigerating system can be effectively reduced, and refrigerating energy efficiency is improved.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the air humidifying device comprises a plurality of vertically-arranged humidifying curtains, gaps are formed among the plurality of humidifying curtains, a water spraying pipe is arranged above the humidifying curtains, and a water collecting tank is arranged below the humidifying curtains; and the airflow passes through the gap between the humidifying curtains and enters the air inlet of the outdoor heat exchanger.
Furthermore, an oil separator is arranged between the exhaust end of the compressor and the four-way reversing valve and used for separating out lubricating oil mixed in the refrigerant compressed by the compressor and returning the lubricating oil to the compressor.
Further, the outdoor heat exchanger is a finned tube heat exchanger, and the indoor heat exchanger is a shell-and-tube, sleeve-type or plate heat exchanger.
Further, a refrigerant buffer tank is arranged between the indoor heat exchanger and the outdoor heat exchanger; the volume of the buffer tank is larger than the maximum volume of the refrigerant required by the whole system when the refrigerant is in a liquid state; the indoor heat exchanger is connected with an inlet and an outlet at the bottom of the refrigerant buffer tank; the outdoor heat exchanger is connected with an inlet and an outlet at the top of the refrigerant buffer tank; the refrigerant buffer tank is used for taking a proper amount of refrigerant under the condition of large working condition fluctuation, namely when only a small amount of refrigerant is needed, redundant refrigerant is stored in the refrigerant buffer tank, and when more refrigerant is needed, the refrigerant is taken from the refrigerant buffer tank, so that the effect of dynamically taking the refrigerant is achieved, and the stable work of the heat pump unit is ensured.
The invention adopts the humidification device arranged at the air inlet to replace the prior common arrangement of spraying water or mist on the finned tube type air-cooled heat exchanger, and the invention has the advantages that:
the air humidifying device greatly improves the heat absorption capacity of outdoor air in summer, controls the condensation temperature at a lower condensation temperature and ensures the efficiency of a refrigerating system.
The refrigerant buffer tank can timely adjust the amount of the refrigerant in the system when the air-cooled heat pump operates in winter, and the stable and efficient operation of the air-cooled heat pump is ensured.
Drawings
FIG. 1 is a schematic view of an evaporative heat pump unit according to the present invention;
FIG. 2 is a schematic view of the structure of an air humidifier in the evaporative heat pump unit of the present invention;
in the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a compressor;
1-1, a suction end;
1-2, an exhaust end;
2. a four-way reversing valve;
3. an indoor heat exchanger;
4. an outdoor heat exchanger;
4-1, an air inlet of the outdoor heat exchanger;
5. an air humidifying device;
5-1, cloth curtain;
5-2, a sprinkler pipe;
5-3 water collecting tank;
6. an oil separator;
7. a refrigerant buffer tank.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural diagram of an evaporative heat pump unit according to the present invention. An evaporative heat pump unit comprises a compressor 1, a four-way reversing valve 2, an indoor heat exchanger 3 and an outdoor heat exchanger 4, wherein the compressor 1 comprises an air suction end 1-1 and an air exhaust end 1-2, four ports of the four-way reversing valve 2 are respectively connected to the air suction end 1-1, the air exhaust end 1-2, the indoor heat exchanger 3 and the outdoor heat exchanger 4 of the compressor 1, and an air humidifying device 5 is arranged at an air inlet part of the outdoor heat exchanger 4 of the evaporative heat pump.
The air humidifying device 5 comprises a plurality of vertically arranged cloth curtains 5-1, gaps are arranged among the cloth curtains 5-1, a sprinkling pipe 5-2 is arranged above the cloth curtains, a water collecting tank 5-3 is arranged below the cloth curtains, and an air inlet 4-1 of the outdoor heat exchanger is connected above the cloth curtains; and the air flow passes through the gap between the cloth curtains 5-1 and enters the air inlet 4-1 of the outdoor heat exchanger. The air humidifying device greatly improves the heat absorption capacity of outdoor air in summer, controls the condensation temperature at a lower condensation temperature and ensures the efficiency of a refrigerating system.
An oil separator 6 is arranged between the exhaust end of the compressor and the four-way reversing valve and used for separating out lubricating oil mixed in the refrigerant compressed by the compressor and returning the lubricating oil to the compressor.
The outdoor heat exchanger 4 is a finned tube heat exchanger, and the indoor heat exchanger 3 is a shell-and-tube, sleeve-type or plate heat exchanger.
A refrigerant buffer tank 7 is arranged between the indoor heat exchanger and the outdoor heat exchanger; the volume of the buffer tank 7 is larger than the maximum volume of the refrigerant required by the whole system when the refrigerant is in a liquid state; the indoor heat exchanger 3 is connected with an inlet and an outlet at the bottom of the refrigerant buffer tank 7; the outdoor heat exchanger 4 is connected with an inlet and an outlet at the top of the refrigerant buffer tank 7; the refrigerant buffer tank is used for taking a proper amount of refrigerant under the condition of large working condition fluctuation, namely when only a small amount of refrigerant is needed, redundant refrigerant is stored in the refrigerant buffer tank, and when more refrigerant is needed, the refrigerant is taken from the refrigerant buffer tank, so that the effect of dynamically taking the refrigerant is achieved, and the stable work of the heat pump unit is ensured. The refrigerant buffer tank can timely adjust the amount of the refrigerant in the system when the air-cooled heat pump operates in winter, and the stable and efficient operation of the air-cooled heat pump is ensured.
The invention adopts the humidifying device arranged at the air inlet to replace the prior common arrangement of spraying water or mist on the finned tube type air-cooled heat exchanger, thereby solving the problem that the outdoor radiator is easy to scale and age.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The evaporative heat pump unit comprises a compressor, a four-way reversing valve, an indoor heat exchanger and an outdoor heat exchanger, wherein the compressor comprises an air suction end and an air exhaust end, four ports of the four-way reversing valve are respectively connected to the air suction end, the air exhaust end, the indoor heat exchanger and the outdoor heat exchanger of the compressor, and an air humidifying device is arranged at an air inlet part of the outdoor heat exchanger of the evaporative heat pump.
2. The evaporative heat pump unit according to claim 1, wherein the air humidification device comprises a plurality of vertically disposed humidification curtains, and a gap is provided between the plurality of humidification curtains; a sprinkler pipe is arranged above the humidifying curtain, and a water collecting tank is arranged below the humidifying curtain.
3. The evaporative heat pump unit according to claim 1 or 2, wherein an oil separator is further provided between the discharge end of the compressor and the four-way reversing valve.
4. The evaporative heat pump unit according to claim 1 or 2, wherein the outdoor heat exchanger is a finned tube heat exchanger, and the indoor heat exchanger is a shell-and-tube, sleeve-tube or plate heat exchanger.
5. The evaporative heat pump unit according to claim 1 or 2, wherein a refrigerant buffer tank is provided between the indoor heat exchanger and the outdoor heat exchanger, and the volume of the buffer tank is larger than the maximum volume of the refrigerant required by the whole system when the refrigerant is in a liquid state.
6. The evaporative heat pump unit according to claim 3, wherein a refrigerant buffer tank is provided between the indoor heat exchanger and the outdoor heat exchanger, and the volume of the buffer tank is larger than the maximum volume of the refrigerant required by the whole system when the refrigerant is in a liquid state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910962327.XA CN110701815A (en) | 2019-10-11 | 2019-10-11 | Evaporation type heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910962327.XA CN110701815A (en) | 2019-10-11 | 2019-10-11 | Evaporation type heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701815A true CN110701815A (en) | 2020-01-17 |
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ID=69200181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910962327.XA Pending CN110701815A (en) | 2019-10-11 | 2019-10-11 | Evaporation type heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251502A (en) * | 2021-06-11 | 2021-08-13 | 青岛腾远设计事务所有限公司 | Condensation heat exchange unit and energy-saving multi-split air conditioner |
-
2019
- 2019-10-11 CN CN201910962327.XA patent/CN110701815A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251502A (en) * | 2021-06-11 | 2021-08-13 | 青岛腾远设计事务所有限公司 | Condensation heat exchange unit and energy-saving multi-split air conditioner |
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