CN200982775Y - Jet circulation spraying type falling film evaporator - Google Patents
Jet circulation spraying type falling film evaporator Download PDFInfo
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- CN200982775Y CN200982775Y CN 200620048354 CN200620048354U CN200982775Y CN 200982775 Y CN200982775 Y CN 200982775Y CN 200620048354 CN200620048354 CN 200620048354 CN 200620048354 U CN200620048354 U CN 200620048354U CN 200982775 Y CN200982775 Y CN 200982775Y
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Abstract
A jet circulation spray falling film evaporator, comprising an evaporator shell, a gas export arranged at the upper part of the evaporator, a heat exchange tubes bundle, a distributor and a liquid-vapor separator. The heat exchange tubes bundle, the distributor and the liquid-vapor separator are axially arranged inside the shell of the evaporator. The distributor is arranged at the top of the heat exchange tubes bundle while the liquid-vapor separator is arranged between the distributor and the gas export. A jet pump whose high-pressure refrigerant import is connected with the condenser is further comprised. The import of the circulating refrigerant is connected with the bottom of the evaporator shell, and the export of the mixed refrigerant is connected with the distributor. Compared with the existing technology of pump less spray falling film evaporator, the utility model can reduce the heat transfer area of evaporator about 10 percent. Compared with the existing technology of pump spray falling film evaporator, the utility model omits the power consumption of circulation pumps. Thereby the utility model discloses a spray falling film evaporator technology with great cost-performance.
Description
Technical field
The utility model relates to the vaporizer technology field, concrete relates to a kind of jet flow circulated sprinkling falling-film evaporator.
Background technology
In vapor-compression refrigerant cycle, evaporimeter commonly used mainly contains plate type heat exchanger and shell and tube exchanger.Shell-tube type comprises patterns such as dry type, full-liquid type and falling film type again.
As shown in Figure 1, the basic mode of flooded evaporator is that the inside and outside thermoexcell 03 of evaporimeter is immersed in cold-producing medium 04 liquid, and cold-producing medium 04 absorbs and evaporates after heat exchanger tube 03 is managed the heat of interior water, and what it carried out is a kind of pool boiling heat exchange.Because have liquid refrigeration system static pressure in the flooded evaporator, the pressure of bottom liquid refrigerant is higher, thereby pairing cold-producing medium saturated-steam temperature causes heat transfer temperature difference to reduce also than higher, makes the decline of flooded evaporator heat transfer property.Flooded evaporator often is designed to have when operation one to three row's heat-transfer pipe 03 to be exposed on the liquid level, takes out of to prevent drop.Another technical barrier of flooded evaporator is a refrigerator oil oil return problem, the oil return of general employing compressor air suction injection mode, because refrigerator oil and cold-producing medium dissolve each other, refrigerator oil concentration is lower in the mixed liquor, amount of refrigerant in the uncontrollable withdrawing fluid of this mode, make the part back flow of refrigerant in compressor, reduce cooling system efficient.
As shown in Figure 2, to be cold-producing medium sprayed by uniform distribution on the heat-exchanging tube bundle 14 in the evaporimeter by designing distributor 13 at the evaporimeter top basic mode of falling film type, absorbs the heat of vaporization in heat-exchanging tube bundle 4 pipes.Relative flooded evaporator, falling film type has following several big advantage: a) owing to there is not the sort of static pressure problem of full-liquid type, made full use of heat transfer area simultaneously, heat exchange property is improved; B) reduced the coolant injection amount; C) the oil return performance is good, and cold-producing medium is after evaporation, and the refrigerator oil concentration of mixing material that flows to the cold-producing medium of base of evaporator and refrigerator oil is higher, is convenient to directly pump into compressor.
General two kinds of forms of repeatedly evaporation (as Fig. 3) that adopt the spray downward film evaporator that direct disposable evaporation (as shown in Figure 2) and plug-in circulating pump are arranged promptly do not have pump spray downward film evaporator and pump spray downward film evaporator are arranged.Referring to Fig. 2, no pump spray downward film evaporator all evaporates through behind the abundant evaporating heat-exchanging pipe be meant that cold-producing medium sprays in evaporimeter under.Base of evaporator has only the liquid refrigerant that has on a small quantity to deposit, and refrigerator oil concentration is higher in the mixed liquor.Do not exist with liquid state at base of evaporator for making liquid refrigerant obtain abundant heat exchange evaporation, heat-exchanging tube bundle 14 row's numbers are abundant in the evaporimeter, make the evaporimeter volume seem too huge like this, and the unit are heat exchange efficiency is also lower.Referring to Fig. 3, there is pump spray downward film evaporator to be meant and outside evaporimeter, adds a circulating pump 16 again, be used for aspirating the liquid refrigerant that is deposited on base of evaporator and deliver to circulated sprinkling in the distributor 13.Disposable relatively vaporation-type, it can improve the unit are heat exchange efficiency, has reduced the volume of evaporimeter greatly.But mean and to increase more power consumption that structure is also more complicated owing to add a circulating pump 16.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of jet flow circulated sprinkling falling-film evaporator, to solve the existing problems of pattern evaporimeter such as existing full-liquid type and falling film type.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of jet flow circulated sprinkling falling-film evaporator, comprise evaporator shell, be arranged on the gas vent on evaporator shell top, be arranged in heat-exchanging tube bundle, distributor, gas-liquid separator in the evaporator shell, distributor is positioned at the heat-exchanging tube bundle top, and gas-liquid separation membrane is between distributor and gas vent, it is characterized in that, also comprise a jet pump, the inlet of the high-pressure refrigerant of this jet pump is communicated with condenser, the circulating refrigerant inlet is communicated with the evaporator shell bottom, and the mix refrigerant outlet is communicated with described distributor.
Described jet pump is gas-liquid-liquid type dual-phase jet pump.
Compare with existing no pump spray downward film evaporator technology, the utility model can reduce evaporimeter heat exchange area about 10%.With there being pump spray downward film evaporator technology to compare, the utility model does not have circulation pump power consumption.Therefore the utility model is the spray downward film evaporator technology of a high performance-price ratio.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a flooded evaporator structure principle chart in the prior art;
Fig. 2 is a conventional spray downward film evaporator structure principle chart in the prior art;
Fig. 3 is conventional spray downward film evaporator structure principle chart for plug-in circulating pump in the prior art repeatedly evaporates;
Fig. 4 is the utility model jet flow circulated sprinkling falling-film evaporator structure principle chart;
Fig. 5 is the utility model jet flow circulated sprinkling falling-film evaporator loop structure figure;
Wherein:
Among Fig. 1,01 is refrigerant outlet, and 02 is refrigerant inlet, and 03 is heat exchanger tube, and 04 is cold-producing medium, and 05 is evaporator shell.
Among Fig. 2,11 is gas vent, and 12 is gas-liquid separator, and 13 is distributor, and 14 is heat-exchanging tube bundle, and 15 is evaporator shell.
Among Fig. 3,11 is gas vent, and 12 is gas-liquid separator, and 13 is distributor, and 14 is heat-exchanging tube bundle, and 15 is evaporator shell, and 16 is water circulating pump.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
Referring to Fig. 4 and Fig. 5, a kind of jet flow circulated sprinkling falling-film evaporator, comprise evaporator shell 15, be arranged on the gas vent 11 on evaporator shell 15 tops, be disposed axially in the heat-exchanging tube bundle 14 in the evaporator shell 15, distributor 13, gas-liquid separator 12, distributor 13 is positioned at heat-exchanging tube bundle 14 tops, and gas-liquid separation membrane 12 is between distributor 13 and gas vent 11, also comprise a jet pump 17, the inlet 171 of the high-pressure refrigerant of this jet pump 17 is communicated with condenser 19 by a magnetic valve 18, circulating refrigerant inlet 172 is communicated with evaporator shell 15 bottoms, and mix refrigerant exports 173 and is communicated with distributor 13.The jet pump 17 that adopts is gas-liquid-liquid type dual-phase jet pump.Compressor 20 is arranged between condenser 19 and the utility model jet flow circulated sprinkling falling-film evaporator.
The recycling high-pressure refrigerant suction of coming out from condenser 19 of the utility model is deposited on jet flow circulated sprinkling falling-film evaporator bottom liquid refrigerant.Cold-producing medium still has part cold-producing medium and evaporimeter heat-exchanging tube bundle 14 to have little time heat exchange after spraying falling liquid films through distributor 13, continues to be deposited on the jet flow circulated sprinkling falling-film evaporator bottom together with liquid form and the less amount of lubrication oil that mixes wherein.Because liquid refrigerant density is bigger than lubricating oil, first layering so bottom liquid is known from experience, the upper strata is a lubricating oil, and lower floor is a cold-producing medium.The recycling high-pressure refrigerant injection that comes out from condenser 19 is deposited on the liquid refrigerant of jet flow circulated sprinkling falling-film evaporator bottom, with after the refrigerant mixed of condenser 19, spray on the heat-exchanging tube bundle 14 of jet flow circulated sprinkling falling-film evaporator so circulation once more.During system stable operation, because can circulating, cold-producing medium repeatedly in jet flow circulated sprinkling falling-film evaporator, carries out heat exchange with heat-exchanging tube bundle 14, so under the constant situation of cold and power consumption, the common relatively spray downward film evaporator of heat-exchanging tube bundle 14 can significantly reduce.When improving unit are heat exchange amount, saved the heat-exchanging tube bundle material.And with respect to full-liquid type, jet spray falling film type evaporation not only has good oil return performance, and has more fabulous heat exchange property, the main performance both ways: the heat exchange area that has made full use of all efficient heat conducting tubes on the one hand; On the other hand when evaporating pressure is low, the hydrostatic column of liquid raises (local saturation pressure rising causes saturation temperature to raise) the saturated evaporating temperature in bottom in the flooded evaporator, heat transfer temperature difference reduces, and causes heat transfer property to descend, and then there is not this situation in jet spray falling film type evaporation.
In jet flow circulated sprinkling falling-film evaporator, cold-producing medium is through evenly spraying behind the distributor 13 in evaporation and heat-exchange tube bank 14, because heat-exchanging tube bundle 14 limited amounts, the cold-producing medium that part does not evaporate continue to deposit to the jet flow circulated sprinkling falling-film evaporator bottom with liquid form.From the liquid refrigerant of the high-pressure refrigerant injection jet flow circulated sprinkling falling-film evaporator of condenser 19 bottom, spray in the steam-generating bank through distributor 13 once more after mixing diffusion.Up to evaporation fully.The gaseous refrigerant of shwoot and directly send into compressor 20 air entries through gas-liquid separation membrane 12 in the jet pump 17 from top gas outlet 11 through the gaseous refrigerant of heat-exchanging tube bundle 14 evaporation.
Although the foregoing description is described the utility model, for the technical staff of the industry, still can do multiple variation to present embodiment, therefore, every employing similar variation of the present utility model all should be listed protection domain of the present utility model in.
Claims (3)
1, a kind of jet flow circulated sprinkling falling-film evaporator, comprise evaporator shell, be arranged on the gas vent on evaporator shell top, be disposed axially in heat-exchanging tube bundle, distributor, gas-liquid separation membrane in the evaporator shell, distributor is positioned at the heat-exchanging tube bundle top, and gas-liquid separator is between distributor and gas vent, it is characterized in that, also comprise a jet pump, the inlet of the high-pressure refrigerant of this jet pump is communicated with condenser, the circulating refrigerant inlet is communicated with the evaporator shell bottom, and the mix refrigerant outlet is communicated with described distributor.
2, jet flow circulated sprinkling falling-film evaporator according to claim 1 is characterized in that, described jet pump is gas-liquid-liquid type dual-phase jet pump.
3, jet flow circulated sprinkling falling-film evaporator according to claim 1 is characterized in that, the inlet of the high-pressure refrigerant of described jet pump is communicated with condenser by a solenoid electric valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048354 CN200982775Y (en) | 2006-11-30 | 2006-11-30 | Jet circulation spraying type falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048354 CN200982775Y (en) | 2006-11-30 | 2006-11-30 | Jet circulation spraying type falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200982775Y true CN200982775Y (en) | 2007-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048354 Expired - Fee Related CN200982775Y (en) | 2006-11-30 | 2006-11-30 | Jet circulation spraying type falling film evaporator |
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| CN (1) | CN200982775Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191683B (en) * | 2006-11-30 | 2010-04-14 | 上海海事大学 | Jet flow circulated sprinkling falling-film evaporator |
| CN102000437A (en) * | 2010-09-03 | 2011-04-06 | 广东工业大学 | Falling film evaporator with gas-liquid separating and membrane-distributing functions |
| CN101903714B (en) * | 2008-01-11 | 2012-08-15 | 江森自控科技公司 | Vapor compression system |
| CN105042949A (en) * | 2015-09-01 | 2015-11-11 | 南京冷德节能科技有限公司 | Forced recycling complete spraying evaporator |
| CN105674783A (en) * | 2016-02-26 | 2016-06-15 | 武汉工程大学 | Jet type LNG vaporization system utilizing geothermal energy |
| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
| CN110513167A (en) * | 2019-08-27 | 2019-11-29 | 中国科学院广州能源研究所 | A kind of caloic hybrid multi-stage electricity generation system |
| CN111780296A (en) * | 2020-06-09 | 2020-10-16 | 青岛海尔空调电子有限公司 | Air conditioning unit with spray cooling system |
-
2006
- 2006-11-30 CN CN 200620048354 patent/CN200982775Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191683B (en) * | 2006-11-30 | 2010-04-14 | 上海海事大学 | Jet flow circulated sprinkling falling-film evaporator |
| CN101903714B (en) * | 2008-01-11 | 2012-08-15 | 江森自控科技公司 | Vapor compression system |
| CN102000437A (en) * | 2010-09-03 | 2011-04-06 | 广东工业大学 | Falling film evaporator with gas-liquid separating and membrane-distributing functions |
| CN102000437B (en) * | 2010-09-03 | 2013-02-13 | 广东工业大学 | Falling film evaporator with gas-liquid separating and membrane-distributing functions |
| CN105042949A (en) * | 2015-09-01 | 2015-11-11 | 南京冷德节能科技有限公司 | Forced recycling complete spraying evaporator |
| CN105674783A (en) * | 2016-02-26 | 2016-06-15 | 武汉工程大学 | Jet type LNG vaporization system utilizing geothermal energy |
| CN105674783B (en) * | 2016-02-26 | 2017-10-10 | 武汉工程大学 | Utilize the jet-propelled LNG vaporization system of geothermal energy |
| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
| CN110513167A (en) * | 2019-08-27 | 2019-11-29 | 中国科学院广州能源研究所 | A kind of caloic hybrid multi-stage electricity generation system |
| CN111780296A (en) * | 2020-06-09 | 2020-10-16 | 青岛海尔空调电子有限公司 | Air conditioning unit with spray cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |