CN104406334B - One kind spray downward film evaporator and its liquid level controlling method - Google Patents
One kind spray downward film evaporator and its liquid level controlling method Download PDFInfo
- Publication number
- CN104406334B CN104406334B CN201410638421.7A CN201410638421A CN104406334B CN 104406334 B CN104406334 B CN 104406334B CN 201410638421 A CN201410638421 A CN 201410638421A CN 104406334 B CN104406334 B CN 104406334B
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- refrigerant
- liquid level
- evaporation
- liquid
- falling film
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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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The invention discloses one kind spray downward film evaporator and its liquid level controlling method, also include cylinder, falling film type evaporation heat exchanger tube, gaseous refrigerant outlet and oil return outlet, also include refrigerant and flow deflector sub-assembly, the gas refrigerant after being exchanged heat with multiple falling film type evaporation heat exchanger tubes flows deflector sub-assembly by the refrigerant and exported into gaseous refrigerant.Complete machine Energy Efficiency Ratio of the present invention is high, cost is low, and spray rate is fast, and the coefficient of heat transfer is high, spray coverage big, drop pouring amount is evenly distributed, heat exchange area utilization rate is high, while saving material heat exchange material, heat transfer effect is improved, overall heat exchange performance is good, unit eer is high, the advantages of unit operation is reliable and stable, meet the policy of the energy-saving and emission-reduction of country, with higher economic and social benefit, be worth promoting.
Description
Technical field
The present invention relates to a kind of downward film evaporator, more particularly to a kind of spray downward film evaporator and its liquid level control
Method processed.
Background technology
Current handpiece Water Chilling Units use dripping type downward film evaporator, and heat exchange is poured by the distribution drop of liquid refrigerant
Guan Shang, in heat exchange pipe surface formation liquid film, makes heat exchanger tube form membranaceous evaporation, because heat exchange pipe surface refrigerant belongs to flowing shape
State, the cold refrigerant static phase ratio of table with traditional flooded evaporator, coefficient of heat transfer lifting, simultaneously as heat exchanger tube table freezes
Agent is drenched using membranaceous drop, is compared than flooded evaporator heat exchanger tube using refrigerant around infiltration, the refrigerant in evaporator fills
Fluence greatly reduces, while also improving the concentration of lubricating oil in refrigerant, is more convenient unit oil return, theoretical performance relatively expires liquid
Formula evaporator is more excellent.
But traditional dripping type downward film evaporator uses dripping type, and refrigerant is oozed from drip hole, ooze speed slowly, change
Hot series is low.And the coverage that drop is drenched in heat exchange pipe surface is small and few from the refrigerant that is assigned to of drip hole of inlet distant place,
The refrigerant that the drip hole of nearly inlet is assigned to is more, because heat exchanger is larger, and the location of drip hole is inclined from a distance from inlet
Difference is larger, and the drop pouring distribution for easily causing heat exchange pipe surface is uneven, easily causes the refrigerant of part heat exchanger tube surface distribution
Excessively evaporate endless, part heat exchange pipe surface is but distributed less than refrigerant, no evaporation effect, so that traditional dripping type falling film type
Evaporator, only part heat exchange area works, and heat exchange area utilization rate is low, wastes a large amount of and heat exchange material, and actually
Do not tell on, overall heat exchange poor performance, unit eer is low.
Downward film evaporator species in the market is more, but overall performance is general, and complete machine Energy Efficiency Ratio is low, in the market
Most of falling film evaporator unit performance and Energy Efficiency Ratio flooded evaporator unit it is also poor, actual realize differs very with theoretical
Far, it is impossible to its actual theoretic advantage, cause the process of the popularization slow.
The Chinese patent of Application No. 200610118931.7《Jet flow circulated sprinkling falling-film evaporator》One kind is disclosed to penetrate
Circulated sprinkling falling-film evaporator, including evaporator shell are flowed, the gas vent on evaporator shell top is arranged on, is disposed axially in
Heat-exchanging tube bundle, distributor, gas-liquid separator in evaporator shell, distributor are located above heat-exchanging tube bundle, and gas-liquid separator
Between distributor and gas vent, in addition to a jet pump, entrance and the condenser of the high-pressure refrigerant of the jet pump connect
Logical, circulating refrigerant entrance is connected with evaporator shell bottom, and mix refrigerant outlet is connected with the distributor.Patent profit
Spray is realized with pump, power consumption is big, cost is high, non-uniform spraying.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the spray that a kind of complete machine Energy Efficiency Ratio is high, cost is low
Downward film evaporator, another object of the present invention is to provide the liquid level controlling method of the spray downward film evaporator.
The above-mentioned purpose of the present invention is achieved by following technical solution：
One kind spray downward film evaporator, including the outlet of cylinder, falling film type evaporation heat exchanger tube, gaseous refrigerant and oil return go out
Mouthful, in addition to refrigerant flowing deflector sub-assembly, pass through with the gas refrigerant after the heat exchange of multiple falling film type evaporation heat exchanger tubes
The refrigerant flows deflector sub-assembly and exported into gaseous refrigerant.The present invention flows deflector sub-assembly by refrigerant
Combination dexterously reduce the use of falling film type evaporation heat exchanger tube, and more efficiently evaporation effect can be reached.
Further, the refrigerant flowing deflector sub-assembly includes leading on falling film evaporation baffle upper plate, completely liquid evaporation
Plate and falling film evaporation side deflector are flowed, one end of the full liquid evaporation baffle upper plate is vertical with falling film evaporation side deflector to be connected,
The other end is connected with cylinder, and described falling film evaporation baffle upper plate one end is divided equally distribution plate with refrigerant distributor and is connected, the other end
The vertical connection end for evaporating baffle upper plate and falling film evaporation side deflector with full liquid is connected.
The falling film evaporation baffle upper plate, full liquid evaporation baffle upper plate and falling film evaporation side deflector are provided with multiple refrigeration
Agent opening.Falling film evaporation side deflector prevents from liquid refrigerant to be sprayed onto in the region of no pipe, the falling film evaporation leading
Stream plate and full liquid evaporation baffle upper plate prevent liquid refrigerant to be inhaled into gaseous refrigerant outlet due to pressure difference, in order to avoid damage pressure
Contracting machine.
Preferably, the refrigerant passing holes are polygonal, round, ellipse or sub-elliptical type.The refrigerant passing holes
Arrangement mode is in-line arrangement or fork row.
Falling film evaporation side deflector and falling film evaporation baffle upper plate surround falling liquid film area, and the cylinder body bottom is provided with full liquid
Area, the falling liquid film area and full liquid zone are covered with many falling film type evaporation heat exchanger tubes.
Preferably, the falling film type evaporation heat exchanger tube axially fork row arrangement or axial in-line arrangement arrangement.The falling film type evaporation
It is the chilled water flowed in heat exchange tube, is the refrigerant of falling liquid film outside pipe, the interior outer fluid of pipe is exchanged heat by heat exchanger tube.
Further, in addition to fountain refrigerant distributing system and refrigerant liquid level controlling system, the fountain
Refrigerant distributing system is by dispersed to the multiple falling film type evaporation heat exchanger tube of refrigerant, the refrigerant liquid level controlling system
The liquid level of the full liquid zone of control.The present invention improves spray refrigerant flow rates by spraying and increases spray area, and lifting is changed
Thermal effect；Using pressure drop averaging type point liquid, the lifting point equal property of liquid lifts evaporation effect；Increase refrigerant liquid level controlling system,
Compressor liquid hammer is prevented, unit reliability is lifted.
Further, the fountain refrigerant distributing system includes the refrigerant feed tube and system located at cylinder upper end
The refrigerant distributor upper cover plate and refrigerant distributor of cryogen feed tube connection divide equally distribution plate, and the refrigerant distributor is equal
Distribution plate is divided to be provided with multiple apertures, the refrigerant speedup disperser is the refrigerant speedup diffusion installed on multiple apertures
Nozzle.
Preferably, refrigerant speedup divergent nozzle is that reducing pipe adds increaser or Venturi tube or increaser.The refrigeration
The radial section of agent speedup divergent nozzle is circle, subcircular, triangle or polygon, and the equivalent diameter of nozzle exit orifice is more than
The equivalent diameter of inlet hole.
The refrigerant liquid level controlling system includes liquid level control sensor mounting cylinder, liquid level communicating pipe, liquid level sensor
With refrigerant flow control expansion valve, the liquid level control sensor mounting cylinder passes through liquid level communicating pipe and the full liquid of cylinder body bottom
Area is connected, and is provided with liquid level sensor in the liquid level control sensor mounting cylinder, the refrigerant flow control expansion valve goes out
Mouth is connected with refrigerant feed tube.
It is described drop spray downward film evaporator refrigerant flow process be, the high pressure refrigerant liquid come out from condenser
Throttle to form low-pressure gas-liquid two-phase mixtures refrigerant by refrigerant flow control expansion valve, then entered by refrigerant feed tube
And divide equally the space that distribution plate is connected composition full of refrigerant distributor upper cover plate and refrigerant distributor, distributed by refrigerant
Device is divided equally a large amount of refrigerant speedup divergent nozzles installation aperture being distributed in distribution plate and evenly distributed into the diffusion of refrigerant speedup
Nozzle.When entering refrigerant speedup divergent nozzle for reducing pipe plus increaser or Venturi tube, refrigerant adds by middle necking
It is uniformly dispersed and is assigned on falling film type area evaporating heat-exchanging pipe after speed；When spray spout is increaser, refrigerant passes through increaser
After be uniformly dispersed and be assigned on falling film type area evaporating heat-exchanging pipe, progressively drop to lower floor's falling liquid film by upper strata falling film type evaporation pipe is membranaceous
Evaporation tube, meanwhile, carry out heat exchange with chilled water in the pipe of falling film type area evaporating heat-exchanging pipe.Now, some refrigerant, which absorbs, steams
The chilled water heat of vaporization formation refrigerant vapour in heat exchanger tube is sent out, and from falling film evaporation baffle upper plate and falling film evaporation side water conservancy diversion
At the opening of plate compressor air suction mouthful is returned to by entering gaseous refrigerant outlet；The unevaporated liquid refrigerant in part enters
The full liquid zone of cylinder body bottom, further exchanges heat with full liquid zone evaporating heat-exchanging pipe, absorbs the chilled water in full liquid zone evaporating heat-exchanging pipe
Heat, and evaporation forms refrigerant vapour, crosses and is exported back into gaseous refrigerant at the opening of full liquid evaporation baffle upper plate
To compressor air suction mouthful, so as to obtain low temperature refrigerant water.
The liquid level controlling method of the spray downward film evaporator, the actual liquid level Y measured when liquid level sensorIt is actual＜ YSetting
When, increase refrigerant flow control expansion valve opening, increase the flow for entering downward film evaporator refrigerant；Work as actual liquid level
YIt is actual=YSettingWhen, refrigerant flow control expansion valve opening is kept, keeps entering the stability of flow of downward film evaporator refrigerant；
As actual liquid level YIt is actual＞ YSettingWhen, refrigerant flow control expansion valve opening is reduced, reduces and enters downward film evaporator refrigerant
Flow.So as to ensure at any time, downward film evaporator has suitable liquid level, it is ensured that its normal operation.
Compared with prior art, beneficial effects of the present invention are as follows：
1st, complete machine Energy Efficiency Ratio height, cost are low.The present invention flows deflector sub-assembly by refrigerant and is separated out falling liquid film area, a side
The quantity of falling film type evaporation heat exchanger tube is reduced in face, and the heat exchanger tube than general existing downward film evaporator reduces half or so, drop
Low cost, improves efficiency；On the one hand liquid refrigerant can be prevented to be sprayed onto the region of no pipe, or because pressure difference is inhaled into gaseous state
Refrigerant outlet, in order to avoid damage compressor；
2nd, spray refrigerant flow rates are improved and spray area is increased, heat transfer effect, uniform liquid refrigerant is lifted.
The present invention utilizes the nozzle design side of reducing pipe plus increaser, Venturi tube or increaser using fountain design
Formula, refrigerant flows through flow velocity at smallest cross-sectional and risen naturally, and the speed of the refrigerant spray of exchange tube surface is fast, the coefficient of heat transfer
It is high.Meanwhile, at smallest cross-sectional after increaser, refrigerant is uniformly disperseed and is sprayed, spray and being covered in heat exchange pipe surface
Lid scope is big, and heat exchange pipe surface is completely covered in efficiency, all heat exchange pipe surfaces is sprayed to refrigerant, heat exchange area
It is high using effect, while saving material heat exchange material, heat transfer effect is improved, overall heat exchange performance is good, unit eer is high.
3rd, using pressure drop averaging type point liquid, the lifting point equal property of liquid lifts evaporation effect
The present invention is using pressure drop averaging type point liquid, and certain pressure drop due to existing, refrigerant can not be unobstructed by closely entering
Nozzle at liquid mouthful, it is ensured that the local nozzle with inlet different distance can be assigned to enough refrigerants, uniformly
Be distributed in each heat exchange pipe surface, heat exchange area it is high using effect, while saving material heat exchange material, improve heat transfer effect,
Overall heat exchange performance is good, and unit eer is high.
4th, increase liquid level controlling method, prevent compressor liquid hammer, lift unit reliability
Present invention employs rational liquid level controlling method, it is ensured that the full liquid of liquid level processing of refrigerant in downward film evaporator
Formula evaporating area, prevents that liquid level is too high in evaporator, and the heat exchanger tube in dipped falling film type evaporation area makes the region heat exchanger tube can not falling liquid film
Heat exchange, while too high refrigerant level can be also prevented, the liquid hammer for making compressor easily suck liquid refrigerant and producing, lifting
Complete machine heat exchange property and reliability.
Brief description of the drawings
Fig. 1 is spray downward film evaporator front view；
Fig. 2 is spray downward film evaporator left view；
Fig. 3 is spray downward film evaporator top view；
Wherein, 1, cylinder；21st, refrigerant feed tube；22nd, refrigerant distributor upper cover plate；23rd, refrigerant distributor is equal
Divide distribution plate；24th, refrigerant speedup divergent nozzle；3rd, falling film type evaporation heat exchanger tube；41st, falling film evaporation baffle upper plate；42nd, it is full
Liquid evaporates baffle upper plate；43rd, falling film evaporation side deflector；5th, gaseous refrigerant is exported；6th, refrigerant liquid level controlling system；61、
Liquid level control sensor mounting cylinder；62nd, liquid level communicating pipe；63rd, liquid level sensor；64th, refrigerant flow control expansion valve 7, return
Oil export.
Embodiment
The present invention is made with reference to Figure of description and specific embodiment and further being elaborated, but embodiment is simultaneously
The present invention is not limited in any form.
Embodiment 1
One kind spray downward film evaporator, including cylinder 1, fountain refrigerant distributing system, refrigerant flowing deflector
Sub-assembly, refrigerant liquid level controlling system, falling film type evaporation heat exchanger tube 3, gaseous refrigerant outlet 5 and oil return outlet 7.
The fountain refrigerant distributing system includes refrigerant feed tube 21 and the refrigerant feed liquor located at cylinder upper end
The refrigerant distributor upper cover plate 22 and refrigerant distributor that pipe 21 is connected divide equally distribution plate 23, and the refrigerant distributor is divided equally
Distribution plate 23 is provided with multiple apertures, and the refrigerant speedup disperser is the refrigerant speedup diffusion installed on multiple apertures
Nozzle 41.The refrigerant speedup divergent nozzle 41 is that reducing pipe adds increaser or Venturi tube or increaser.The refrigerant
The radial section of speedup divergent nozzle 41 is circle, subcircular, triangle or polygon, and the equivalent diameter of nozzle exit orifice is more than
The equivalent diameter of inlet hole.
The refrigerant flowing deflector sub-assembly includes falling film evaporation baffle upper plate 41, full liquid evaporation baffle upper plate 42 and
Falling film evaporation side deflector 43, one end of the full liquid evaporation baffle upper plate 42 is vertical with falling film evaporation side deflector 43 to be connected,
The other end is connected with cylinder 1, and described one end of falling film evaporation baffle upper plate 41 is divided equally distribution plate 23 with refrigerant distributor and is connected, separately
One end is connected with the vertical connection end of full liquid evaporation baffle upper plate 42 and falling film evaporation side deflector 43.Led in the falling film evaporation
Flow plate 41, full liquid evaporation baffle upper plate 42 and falling film evaporation side deflector 43 and be provided with multiple refrigerant passing holes.After heat exchange
Gas refrigerant is exported by the opening into gaseous refrigerant.The refrigerant passing holes are square, and arrangement mode is
In-line arrangement.
The falling film type evaporation heat exchanger tube 3 includes falling film type area evaporating heat-exchanging pipe and full liquid zone evaporating heat-exchanging pipe, the drop
Axially fork row arrangement or the axial in-line arrangement arrangement of film-type evaporation heat exchanger tube.Refrigerant distributor divides equally distribution plate 23, in falling film evaporation
Deflector 41 and falling film evaporation side deflector 43 define falling liquid film area.The falling film type evaporation heat exchanger tube 3 is the cold of flowing in managing
Outer fluid is exchanged heat by heat exchanger tube in matchmaker's water, the outer refrigerant for falling liquid film of pipe, pipe.
The refrigerant liquid level controlling system includes liquid level control sensor mounting cylinder 61, liquid level communicating pipe 62, liquid level biography
Sensor 63 and refrigerant flow control expansion valve 64, the liquid level control sensor mounting cylinder 61 pass through liquid level communicating pipe 62 and cylinder
Liquid level sensor 63, the refrigerant are installed in the full liquid zone connection of the bottom of body 1, the liquid level control sensor mounting cylinder 61
The outlet of flow control expansion valve 64 is connected with refrigerant feed tube 21.
The gaseous refrigerant outlet 5 is located at the upper end of cylinder 1, and the oil return outlet 7 connects located at the bottom of cylinder 1 with full liquid zone
Connect.
It is described drop spray downward film evaporator refrigerant flow process be, the high pressure refrigerant liquid come out from condenser
Low-pressure gas-liquid two-phase mixtures refrigerant is formed by the throttling of refrigerant flow control expansion valve 64, then by refrigerant feed tube 21
Divide equally the space that distribution plate 23 is connected composition with refrigerant distributor into and full of refrigerant distributor upper cover plate 22, pass through system
Refrigerant distributor is divided equally a large amount of refrigerant speedup divergent nozzles installation aperture being distributed in distribution plate 23 and evenly distributed into refrigeration
Agent speedup divergent nozzle 24.When entering refrigerant speedup divergent nozzle for reducing pipe plus increaser or Venturi tube, refrigerant warp
Necking is uniformly dispersed after accelerating and is assigned on falling film type area evaporating heat-exchanging pipe in the middle of crossing；When spray spout is increaser, refrigeration
Agent is uniformly dispersed after increaser to be assigned on falling film type area evaporating heat-exchanging pipe, progressively under upper strata falling film type evaporation pipe is membranaceous
Lower floor's falling film evaporation pipe is down to, meanwhile, carry out heat exchange with chilled water in the pipe of falling film type area evaporating heat-exchanging pipe.Now, part
Chilled water heat of vaporization formation refrigerant vapour in refrigerant suction evaporating heat-exchanging pipe, and from the He of falling film evaporation baffle upper plate 41
At the opening of falling film evaporation side deflector 43 compressor air suction mouthful is returned to by entering gaseous refrigerant outlet 5；Do not steam part
The liquid refrigerant of hair enters the full liquid zone of the bottom of cylinder 1, is further exchanged heat with full liquid zone evaporating heat-exchanging pipe, absorbs full liquid zone and steams
The chilled water heat in heat exchanger tube is sent out, and evaporation forms refrigerant vapour, and mistake at the opening of baffle upper plate 42 is evaporated from full liquid
Compressor air suction mouthful is returned into gaseous refrigerant outlet 5, so as to obtain low temperature refrigerant water.
The liquid level controlling method of the spray downward film evaporator, the actual liquid level Y measured when liquid level sensor 63It is actual＜
YSettingWhen, the aperture of increase refrigerant flow control expansion valve 64 increases the flow for entering downward film evaporator refrigerant；Work as reality
Liquid level YIt is actual=YSettingWhen, the aperture of refrigerant flow control expansion valve 64 is kept, keeps entering the flow of downward film evaporator refrigerant
It is stable；As actual liquid level YIt is actual＞ YSettingWhen, the aperture of refrigerant flow control expansion valve 64 is reduced, reduction enters downward film evaporator
The flow of refrigerant.
Claims (8)
1. one kind spray downward film evaporator, including the outlet of cylinder, falling film type evaporation heat exchanger tube, gaseous refrigerant and oil return go out
Mouthful, it is characterised in that deflector sub-assembly also is flowed including refrigerant, the gas after being exchanged heat with multiple falling film type evaporation heat exchanger tubes
Refrigerant flows deflector sub-assembly by the refrigerant and exported into gaseous refrigerant,
The refrigerant flowing deflector sub-assembly includes falling film evaporation baffle upper plate, full liquid evaporation baffle upper plate and falling film evaporation
Side deflector, one end of the full liquid evaporation baffle upper plate is vertical with falling film evaporation side deflector to be connected, and the other end connects with cylinder
Connect, described falling film evaporation baffle upper plate one end is divided equally distribution plate with refrigerant distributor and is connected, the other end in full liquid evaporation with leading
Flow the vertical connection end connection of plate and falling film evaporation side deflector, the falling film evaporation baffle upper plate, full liquid evaporation baffle upper plate
Multiple refrigerant passing holes are provided with falling film evaporation side deflector.
2. downward film evaporator is sprayed according to claim 1, it is characterised in that the refrigerant passing holes are polygonal, circle
Type, ellipse or sub-elliptical type.
3. spray downward film evaporator according to claim 1, it is characterised in that the refrigerant passing holes arrangement mode is
In-line arrangement or fork row.
4. downward film evaporator is sprayed according to claim 1, it is characterised in that falling film evaporation side deflector and drop
Film evaporation baffle upper plate surrounds falling liquid film area, and the cylinder body bottom is provided with full liquid zone, and the falling liquid film area and full liquid zone are covered with many drops
Film-type evaporation heat exchanger tube.
5. downward film evaporator is sprayed according to claim 4, it is characterised in that the falling film type evaporation heat exchanger tube is axially pitched
Row's arrangement or axial in-line arrangement arrangement.
6. downward film evaporator is sprayed according to claim 1, it is characterised in that also distribute system including fountain refrigerant
System and refrigerant liquid level controlling system, the fountain refrigerant distributing system steam dispersed to the multiple falling film type of refrigerant
Send out on heat exchanger tube, the liquid level of the full liquid zone of refrigerant liquid level controlling system control.
7. downward film evaporator is sprayed according to claim 6, it is characterised in that the refrigerant liquid level controlling system includes
Liquid level control sensor mounting cylinder, liquid level communicating pipe, liquid level sensor and refrigerant flow control expansion valve, the Liquid level
Sensor mounting cylinder is connected by the full liquid zone of liquid level communicating pipe and cylinder body bottom, is pacified in the liquid level control sensor mounting cylinder
Equipped with liquid level sensor, the refrigerant flow control expansion valve outlet is connected with refrigerant feed tube.
8. downward film evaporator is sprayed according to claim 7, it is characterised in that the refrigerant liquid level controlling system liquid level
Control method is as follows：When the actual ＜ Y settings of the actual liquid level Y that liquid level sensor is measured, increase refrigerant flow control is swollen
Swollen valve opening, increases the flow for entering downward film evaporator refrigerant；When actual liquid level Y reality=Y are set, refrigeration is kept
Agent flux controls expansion valve opening, keeps entering the stability of flow of downward film evaporator refrigerant；As the actual ＞ of actual liquid level Y
When Y is set, refrigerant flow control expansion valve opening is reduced, the flow for entering downward film evaporator refrigerant is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638421.7A CN104406334B (en) | 2014-11-13 | 2014-11-13 | One kind spray downward film evaporator and its liquid level controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638421.7A CN104406334B (en) | 2014-11-13 | 2014-11-13 | One kind spray downward film evaporator and its liquid level controlling method |
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| CN104406334A CN104406334A (en) | 2015-03-11 |
| CN104406334B true CN104406334B (en) | 2017-08-11 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387653B (en) * | 2015-12-21 | 2018-02-06 | 重庆美的通用制冷设备有限公司 | Evaporator and there are its handpiece Water Chilling Units |
| CN109140835B (en) * | 2018-08-07 | 2023-04-18 | 南京恒标斯瑞冷冻机械制造有限公司 | Falling film evaporator |
| CN113357850B (en) * | 2021-06-23 | 2023-08-25 | 特灵空调系统(中国)有限公司 | Evaporator and water chilling unit |
| CN116294303B (en) * | 2023-04-04 | 2024-03-19 | 南京瀚杰制冷科技有限公司 | Method for improving heat exchange efficiency of falling film evaporator and evaporator device thereof |
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|---|---|---|---|---|
| US6868695B1 (en) * | 2004-04-13 | 2005-03-22 | American Standard International Inc. | Flow distributor and baffle system for a falling film evaporator |
| CN101052854A (en) * | 2004-10-13 | 2007-10-10 | 约克国际公司 | Falling film evaporator |
| CN101191683A (en) * | 2006-11-30 | 2008-06-04 | 上海海事大学 | Jet flow circulated sprinkling falling-film evaporator |
| CN101907375A (en) * | 2008-01-11 | 2010-12-08 | 江森自控科技公司 | Heat exchanger |
| CN102472589A (en) * | 2009-07-22 | 2012-05-23 | 江森自控科技公司 | Compact evaporator for chillers |
| CN103925749A (en) * | 2013-12-30 | 2014-07-16 | 麦克维尔空调制冷(武汉)有限公司 | Falling film evaporator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868695B1 (en) * | 2004-04-13 | 2005-03-22 | American Standard International Inc. | Flow distributor and baffle system for a falling film evaporator |
| CN101052854A (en) * | 2004-10-13 | 2007-10-10 | 约克国际公司 | Falling film evaporator |
| CN101191683A (en) * | 2006-11-30 | 2008-06-04 | 上海海事大学 | Jet flow circulated sprinkling falling-film evaporator |
| CN101907375A (en) * | 2008-01-11 | 2010-12-08 | 江森自控科技公司 | Heat exchanger |
| CN102472589A (en) * | 2009-07-22 | 2012-05-23 | 江森自控科技公司 | Compact evaporator for chillers |
| CN103925749A (en) * | 2013-12-30 | 2014-07-16 | 麦克维尔空调制冷(武汉)有限公司 | Falling film evaporator |
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| CN104406334A (en) | 2015-03-11 |
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Address after: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Applicant after: GUANGDONG SHENLING AIR-CONDITIONING EQUIPMENT CO., LTD. Address before: 528313 Shunde City, Foshan province Chencun town machinery and equipment Park, No. ten, No. Road, No. 8 Applicant before: Guangdong Shenling Air Conditioning Equipment Co., Ltd. |
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