CN208720573U - A kind of finned evaporator - Google Patents
A kind of finned evaporator Download PDFInfo
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- CN208720573U CN208720573U CN201820957762.4U CN201820957762U CN208720573U CN 208720573 U CN208720573 U CN 208720573U CN 201820957762 U CN201820957762 U CN 201820957762U CN 208720573 U CN208720573 U CN 208720573U
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- evaporator
- copper pipe
- economizer
- tube
- heat exchange
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Abstract
The utility model discloses a kind of finned evaporators, it is characterized by comprising evaporator portions and economizer portion, the bottom in evaporator portion is arranged in the economizer portion, and the heat exchanger components of the economizer are the concentric circular sleeve by two different tube diameters, respectively interior copper pipe and outer copper pipe；The access formed inside interior copper pipe is tube side, and the access that outer copper pipe and interior plumbers shed are formed is shell side；The evaporator portion includes heat exchange copper tube；The outer wall of the concentric circular sleeve and heat exchange copper tube is equipped with aluminum fin-stock.It by the way that economizer and evaporator to be combined, keeps base of evaporator and surface temperature to maintain 0 DEG C or more always using economizer, evaporation bottom surface is avoided frosting and icing phenomenon occur.
Description
Technical field
It is the utility model relates to air source heat pump technical field, in particular to a kind of used in the low-temperature air source heat pump
Finned evaporator.
Background technique
In the existing low circumstance temperature net for air-source heat pump units for being used for northern heating and hot water, compressor is using air injection enthalpy-increasing warm
When pumping compressor, unit need to additionally configure economizer, occupy unit space.When unit work in 0 DEG C of environment below, remove
The water stayed when white, which can build-up ice rapidly, accumulates in finned evaporator bottom and its surface, and cumulative, to understand
Certainly this problem, evaporator fin bottom need place mat ice-melt heat tape, and it is hidden that the use of heat tape to unit brings electric leakage
Suffer from, also reduces the efficiency of unit.Although current finned evaporator bottom can do supercooling tube to replace heat tape,
Very little, ice-melt effect are poor for heat after economizer exchanges heat for refrigerant inside supercooling tube.
Utility model content
Technical problem to be solved in the utility model is how not need additionally to increase equipment and energy consumption solution steaming
It sends out the defrosting of device bottom and removes ice problem.
In order to solve the above-mentioned technical problem, the utility model devises a kind of finned evaporator, it is characterised in that including
The bottom in evaporator portion is arranged in evaporator portion and economizer portion, the economizer portion, and the heat exchanger components of the economizer are served as reasons
The concentric circular sleeve of two different tube diameters, respectively interior copper pipe and outer copper pipe；The access formed inside interior copper pipe is tube side, outer copper pipe
It is shell side with the access that interior plumbers shed is formed；The evaporator portion includes heat exchange copper tube；The concentric circular sleeve and heat exchange copper tube
Outer wall be equipped with aluminum fin-stock.
The finned evaporator, it is characterised in that the interior copper pipe and outer copper pipe directly pass through be uniformly arranged 2 with
On fin be supported connection.
The finned evaporator, it is characterised in that the heat exchange copper tube in evaporator portion uses inner screw thread copper pipe.
The finned evaporator, it is characterised in that the aluminum fin-stock in the evaporator portion and the economizer portion is integrally set
It sets.
Implement the utility model has the following beneficial effects: utilizing economy by the way that economizer and evaporator to be combined
Device keeps base of evaporator and surface temperature to maintain 0 DEG C or more always, and evaporation bottom surface is avoided frosting occur and freeze existing
As.
Detailed description of the invention
Fig. 1 is the main view of finned evaporator；
Fig. 2 is the left view of finned evaporator；
Fig. 3 is double pipe heat exchanger diagrammatic cross-section；
Fig. 4 is low circumstance temperature air source heat pump system block diagram.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1 is the main view of finned evaporator；Fig. 2 is the left view of finned evaporator.Finned evaporator packet
Evaporator portion 200 and economizer portion 300 are included, the bottom in evaporator portion 200 is arranged in economizer portion 300.The heat exchanging part of economizer
Part is the concentric circular sleeve by two different tube diameters, respectively interior copper pipe 302 and outer copper pipe 303；The access formed inside interior copper pipe
For tube side B, the access that outer copper pipe and interior plumbers shed are formed is shell side A；The evaporator portion includes heat exchange copper tube；Concentric circular sleeve
Aluminum fin-stock 400 is equipped with the outer wall of heat exchange copper tube.
Finned evaporator is integrally made of upper and lower two parts, and bottom part function is that economizer portion makes as economizer
With middle and upper part function is that evaporator is used as evaporator.Fig. 3 is double pipe heat exchanger diagrammatic cross-section；Bottom economizer
Heat exchange copper tube is bushing type, connects into concentric circular sleeve by two kinds of different copper pipes of size, outer copper pipe and interior copper pipe inner wall are made
Shape of threads reinforces heat exchange, while interior copper pipe outer is also formed with the fin 304 for reinforcing heat exchange, and outer copper pipe outer is connected with aluminum fin-stock
400, it is shell side between outer copper pipe and interior copper pipe, is tube side inside interior copper pipe.Shell side walks the high-temperature high-pressure liquid flowed out from condenser
State refrigerant transmits heat by outer copper pipe and aluminum fin-stock, keeps finned evaporator bottom and its surface temperature always 0
DEG C or more, finned evaporator bottom and its surface are tentatively cooled down without ice sheet phenomenon, liquid refrigerant is accumulated.During tube side is walked
The gas-liquid mixed state cold-producing medium of middle benefit gas pressure is exchanged heat with high temperature and pressure liquid refrigerant by interior copper pipe wall and fin, quilt
It flashes to be inhaled into compressor after gaseous state and presses mouth, liquid refrigerant is further cooled down at this time.
Middle and upper part evaporator heat exchange copper pipe is common inner screw thread copper pipe, and copper pipe outer is connected with aluminum fin-stock, also with shunting
The liquid-dividing head of refrigerant and the gas collecting tube for collecting gaseous refrigerant, low-temp low-pressure gas-liquid mixed state cold-producing medium enter from liquid-dividing head,
Each circuit of evaporator is assigned to by liquid-dividing head, low-temp low-pressure gas-liquid mixed state cold-producing medium passes through copper pipe and aluminum fin-stock and outdoor air
Heat exchange, is evaporated into the gaseous state of low-temp low-pressure, flows out after being pooled to gas collecting tube.
Fig. 4 is low circumstance temperature air source heat pump system block diagram, and system specifically includes that evaporator 4, four-way valve 5, compressor 7, water
Side heat exchanger 8, gas-liquid separator 6, liquid storage device 10, first filter 9, economizer 12, auxiliary electric expansion valve 11, main electronic expansion
Valve 3, the second filter 2 and liquid-dividing head 1.Compressor is connected with the D of four-way valve mouth；Evaporator is connected with the E of four-way valve mouth,
Gas-liquid separator is connected with the S of four-way valve mouth, and water-side heat is connected with the C of four-way valve mouth；Water-side heat and liquid storage
Device is connected, then by dividing two-way after first filter, is connected all the way with the shell side of the economizer of bushing type, another way passes through auxiliary electricity
It is connected after the reducing pressure by regulating flow of sub- expansion valve with the tube side of economizer.The outlet of economizer first passes through main electric expansion valve, passes through again
Second filter is connected after being followed by liquid-dividing head with finned evaporator.Evaporator 4 is the middle and upper part of finned evaporator, warp
Ji device 12 is the bottom of finned evaporator.
Compressor sucks the gaseous refrigerant of low-temp low-pressure, and the gaseous refrigerant of low-temp low-pressure is compressed by the compressor rear shape
State becomes the gaseous state of high temperature and pressure, heats water by the laggard water inlet side heat exchanger of four-way valve, is condensed into high temperature and pressure
Liquid, after liquid storage device and filter enter bushing type economizer, initially enter heat exchange copper tube be double pipe heat exchanger, one
Shell side is walked on road, and the gas-liquid mixed state cold-producing medium that another way becomes medium temperature and medium pressure after the reducing pressure by regulating flow of auxiliary electric expansion valve enters
Tube side, the evaporation of tube side refrigerant absorb the heat of the high temperature and pressure liquid refrigerant of shell side, become the gaseous state of medium temperature and medium pressure, mended
Enter the middle pressure mouth of compressor, meanwhile, the high temperature and pressure liquid refrigerant of shell side is walked by outer copper pipe and aluminum fin-stock constantly to unofficial biography
Heat is passed, keeps finned evaporator bottom and its surface temperature always at 0 DEG C or more, by deeply undercooling at medium temperature high-pressure liquid
Refrigerant becomes low-temp low-pressure gas-liquid mixed state cold-producing medium after the reducing pressure by regulating flow of main electric expansion valve, successively by filtering
Device and liquid-dividing head enter finned evaporator, exchange heat with outdoor Cryogenic air, are evaporated into the gaseous state of low-temp low-pressure, pass through
It crosses after four-way valve and gas-liquid separator and returns to compressor and enter subsequent cycle.
When bottom casing type heat exchanging copper pipe and aluminum fin-stock as economizer in use, the high temperature and pressure liquid of shell fluid flow
Refrigerant transmits heat by outer copper pipe and aluminum fin-stock, keeps finned evaporator bottom and its surface temperature always at 0 DEG C
More than, without accumulating ice sheet phenomenon, the water that when defrosting generates can be smoothly discharged to outside machine for finned evaporator bottom and its surface,
Without using heat tape, heat exchanger heat exchange is protected, and unit is safe and reliable to operation.Meanwhile high temperature and pressure liquid refrigerant
It exchanges heat in shell side and jointly outside shell side, not only the gas-liquid mixed state cold-producing medium heat exchange with air heat-exchange but also with medium temperature and medium pressure, supercooling
Degree obtains maximum raising, and unit operation efficiency gets a promotion.
Disclosed above is only a kind of embodiment of the utility model, cannot limit the utility model certainly with this
Interest field, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to this reality
The equivalent variations made by novel claim, still falls within the scope of the utility model.
Claims (4)
1. a kind of finned evaporator, it is characterised in that including evaporator portion and economizer portion, the economizer portion setting is being steamed
Send out the bottom in device portion, the heat exchanger components of the economizer are the concentric circular sleeve by two different tube diameters, respectively in copper pipe and outer
Copper pipe；The access formed inside interior copper pipe is tube side, and the access that outer copper pipe and interior plumbers shed are formed is shell side；The evaporator portion
Including heat exchange copper tube；The outer wall of the concentric circular sleeve and heat exchange copper tube is equipped with aluminum fin-stock.
2. finned evaporator according to claim 1, it is characterised in that the interior copper pipe and outer copper pipe directly pass through
2 or more fin of even setting is supported connection.
3. finned evaporator according to claim 1, it is characterised in that the heat exchange copper tube in evaporator portion uses interior spiral shell
Line copper pipe.
4. finned evaporator according to claim 1, it is characterised in that the evaporator portion and the economizer portion
Aluminum fin-stock is wholely set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957762.4U CN208720573U (en) | 2018-06-21 | 2018-06-21 | A kind of finned evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820957762.4U CN208720573U (en) | 2018-06-21 | 2018-06-21 | A kind of finned evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208720573U true CN208720573U (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820957762.4U Active CN208720573U (en) | 2018-06-21 | 2018-06-21 | A kind of finned evaporator |
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| CN (1) | CN208720573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954980A (en) * | 2018-06-21 | 2018-12-07 | 深圳市派沃新能源科技股份有限公司 | A kind of finned evaporator, heat pump system and control method |
-
2018
- 2018-06-21 CN CN201820957762.4U patent/CN208720573U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954980A (en) * | 2018-06-21 | 2018-12-07 | 深圳市派沃新能源科技股份有限公司 | A kind of finned evaporator, heat pump system and control method |
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