CN100573014C - Air-air heat exchanger with refrigerating function - Google Patents
Air-air heat exchanger with refrigerating function Download PDFInfo
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- CN100573014C CN100573014C CNB2007100519263A CN200710051926A CN100573014C CN 100573014 C CN100573014 C CN 100573014C CN B2007100519263 A CNB2007100519263 A CN B2007100519263A CN 200710051926 A CN200710051926 A CN 200710051926A CN 100573014 C CN100573014 C CN 100573014C
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Abstract
The present invention relates to a kind of is the air-air heat exchanger that is used to freeze of mixed working fluid with the water and air, it includes cooling air pipeline and cooling air duct, described cooling air pipeline is connected in series mutually to be communicated with by hot limit of heat exchange unit and pipeline and constitutes, and the cold limit of described heat exchange unit is connected in the cooling air duct, its difference is to be provided with the steam atomization chamber in the cooling air duct, install atomizer in the steam atomization chamber, atomizer and high-pressure water join.Described heat exchange unit is the plate-fin heat exchange unit, installs by fork-countercurrent heat exchange method; Described cooling air duct is the negative pressure shape.The present invention proposes realization is the design concept that mixed working fluid freezes with the water and air, and moisture absorption phase transformation link is designed in the heat exchanger high efficiency carries out, and reaches mass transfer, conducts heat synchronously, circulates benignly.Make the present invention become a kind of air-air heat exchanger with higher refrigeration effect.
Description
Technical field
The present invention relates to a kind of is the air-air heat exchanger that is used to freeze of mixed working fluid with the water and air, belongs to the Refrigeration ﹠ Air-Conditioning technical field.
Background technology
The working medium that is used for air conditioner refrigerating at present mostly is freon, though such air-conditioning refrigerating efficiency is higher, has environmental pollution problems.Can freeze and higher refrigerating efficiency is arranged with a kind of new innocuous substance replacement freon be the difficult problem that current refrigeration industry exists.
General air-air heat exchanger, the cold fluid flow of low temperature through cold limit and and the heat-exchanger fin on cold limit carry out heat exchange, cold is delivered on the fin of hot limit through this, the fluid on hot limit of flowing through carries out heat exchange with fin, its temperature is reduced, take away cold, finish whole heat transfer process.In general, the contained cold that cold changes and hot limit is obtained of the fluid on the cold limit of heat exchanger of flowing through equates.Common air-air heat exchanger can only be finished heat exchanging process, no refrigerating function.
Summary of the invention
Technical problem to be solved by this invention provides a kind of have refrigerating function and the higher air-air heat exchanger of refrigerating efficiency.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: include cooling air pipeline (hot limit), cooling air duct (cold limit) and heat exchange unit, described cooling air pipeline is connected in series mutually to be communicated with by heat exchange unit 5 hot limits and pipeline and constitutes, and described heat exchange unit 5 cold limits are connected in the cooling air duct, its difference is to be provided with steam atomization chamber 8 in the cooling air duct, install atomizer 1 in the steam atomization chamber, atomizer and high-pressure water join.
Press such scheme, described heat exchange unit 5 is the plate-fin heat exchange unit, installs by fork-countercurrent heat exchange method; Described cooling air duct is the negative pressure shape.But described heat exchange unit 5 is formed by connecting with the stack of steam atomization chamber 8 vertical interlaceds.
Press such scheme, described steam atomization chamber 8 is installed in the cooling air duct of each heat exchange unit 5 top.
Press such scheme, described high-pressure water is linked to each other with storage tank 7 by high-pressure pump 3 and constitutes, and storage tank links to each other with the cooling air duct, constitutes circulation spray high-pressure water thus.
The course of work of the present invention and mechanism are: the cooling air duct is the cold limit of this air-air heat exchanger; comprise that cold limit goes out with cold limit; the cold limit of heat exchanger is in negative pressure state; this helps the vaporization rate of water greatly; in the steam atomization chamber on cold limit; spray is with the minimum atomized water of particle (the water particle diameter is about 45 μ), and the Cryogenic air on the cold limit of flowing through and atomized water particulate are mixed into refrigeration working medium.Because water is graininess, has increased the contact area of air and water, thereby, in the environment of low temperature, negative pressure, little water particle with closely the touching of heat-exchanger fin in, absorb heat, cold is made in vaporization rapidly, and in time spread out of, circulation is constantly, and is saturated until the air water capacity.At this moment the water capacity of each section of air on cold limit of flowing through all can reach or near saturated.The cold that a large amount of little water particle vaporizations are made has been delivered to hot limit simultaneously efficiently, the heat of air in the cooling air pipeline is taken away in a large number via heat exchanger, thereby reduced the temperature of hot limit fluid, reaches the purpose of cooling refrigeration.Calculate and the preliminary experiment checking according to theory, compare with common air-air heat exchanger, under the equal conditions, the cold that air-air heat exchanger of the present invention passes out is up to and enters more than 4 times of the contained cold of cold limit fluid.
Beneficial effect of the present invention is:
1, heat exchanger heat edge work of the present invention is in atmospheric pressure state, and this is convenient to easier air with cooling and is transported to the use interval.Cold edge work is in negative pressure state, and this will improve the vaporization rate of little water particle greatly, improves refrigerating efficiency.Under negative pressure condition, the mixed working fluid of water and air has bigger enthalpy and changes the space, and the latent heat of vaporization is bigger, makes system have bigger refrigerating capacity.
2, the interchanger main body is plate-fin heat exchange unit and the atomization unit that disposes water, vertically be formed by stacking but multilayer is alternate, form the cold limit of vertical heat exchanger, this helps reducing the resistance of cold limit cold airflow, also helps little water particle and fin intimate contact in the mixed working fluid.Horizontal direction successively is connected to form the hot limit of heat exchanger.Plate-fin heat exchange unit heat exchange mode is a cross flow, and whole heat exchanger is according to fork-countercurrent flow, has that heat exchange area is variable, heat exchange efficiency is high, helps little water particle and fin even contact, the effect rapidly of vaporizing.
3, the atomization unit of high-pressure hydraulic pump, storage tank, high-pressure water pipe and multilayer water is formed the atomization system of water, its effect is to make the layering of cold limit eject atomized water about particle diameter 45 μ, this will enlarge the vaporization area of water, and can be in time, closely contact with fin equably, finish mass transfer, diabatic process, atomized water is vaporized rapidly, and the cold that obtains is delivered to hot limit simultaneously.But the surplus water repetitive cycling after the vaporization is used.
The present invention proposes realization is the design concept that mixed working fluid freezes with the water and air, and moisture absorption phase transformation link is designed in the heat exchanger high efficiency carries out, and reaches mass transfer, conducts heat synchronously, circulates benignly.Make the present invention become a kind of air-air heat exchanger with higher refrigeration effect.
Description of drawings
Fig. 1 is the structure chart of facing of one embodiment of the invention.
Fig. 2 be in the one embodiment of the invention heat exchanger face structure chart.
Fig. 3 is the side view of Fig. 2.
Fig. 4 is the C-C cutaway view among Fig. 2.
Fig. 5 is the vertical view of Fig. 2.
Fig. 6 is the A place partial enlarged drawing among Fig. 4.
Fig. 7 is the B place partial enlarged drawing among Fig. 5.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described further.
Include cooling air duct and cooling air pipeline, two paths is not communicated with mutually, respectively walks the path of each.Described cooling air duct is connected in series mutually to be communicated with by the cold limit of 3～6 heat exchange units 5 and pipeline and constitutes, present embodiment is 5 heat exchange units, each heat exchange unit is installed vertically at interval, hot limit inlet, outlet end wherein is connected by water conservancy diversion bend pipe 2, mutual serial connection, and heat exchange unit one end and the hot limit air inlet pipe 11 of below are joined, be hot limit inlet end, heat exchange unit one end of the top is outlet side, hot limit, joins with hot limit escape pipe 10, constitutes the cooling air pipeline; Described heat exchange unit 5 is the plate-fin heat exchange unit, comprise shell 12 and the hot and cold limit fin of installing in the enclosure 20,18, shell is provided with the adpting flange of four direction, hot and cold limit fin 20,18 intersects to superpose along vertical and horizontal (level) both direction respectively to be laid, isolate by strip of paper used for sealing 17 and side partition 19, make cold limit air-flow vertically move from the top down, hot limit air-flow is laterally circulation, hot and cold limit is isolated, be not communicated with mutually, by fin and dividing plate heat conduction, constitute fork-counter-flow heat exchange structure.Technical parameters such as cold limit fin 20 and hot limit fin 18 can require according to windage, heat transfer area size, hot and cold limit heat transfer ratio design and select, and different forms and different specifications can be arranged, and the flow of hot limit air is about 10 times of cold limit air mass flow.Four adpting flanges on the shell 12, right-hand member and left end are heat exchange unit cooling air pipeline inlet, outlet end 14,16, and top and bottom are heat exchange unit cooling air duct inlet, outlet end 13,15.The inlet, outlet end at each two ends, the heat exchange unit left and right sides is ganged up mutually by the hot limit outlet, inlet pipe 10,11 of water conservancy diversion bend pipe 2 and upper and lower, constitutes the cooling air pipeline.Each heat exchange unit is advancing of two ends up and down, the outlet side is connected by tubular water vapour atomization chamber 8, form vertical interlaced stack syndeton up and down, wherein the heat exchange unit of the top is connected with cold limit air inlet pipe 4 through the steam atomization chamber, and steam atomization chamber and cold limit air inlet pipe link into an integrated entity, give vent to anger termination storage tank 7 and link to each other of nethermost heat exchanger with cold limit escape pipe 9, install atomizer 1 in the steam atomization chamber, atomizer and high-pressure water join, described high-pressure water is by high-pressure pump 3, water pipe 6 formation that links to each other with storage tank 7 constitutes circulation spray high-pressure water.The cold edge channel of each heat exchange unit and the tubular water vapour atomization chamber of joining and up and down cold limit be connected in series mutually into and out of tracheae, constitute the cooling air duct.The cooling air duct works in negative pressure state, is convenient to the spray vaporization refrigeration in the mixed working fluid.The cold limit of heat exchange unit fin 20 is vertically installed, to reduce vertical windage.
The course of work of present embodiment is: the cold air of lower temperature enters the steam atomization chamber from the cold limit entrance point of heat exchanger, the atomized water particulate (about diameter 45 μ) that sprays in the atomizer of steam atomization chamber also enters atomization chamber simultaneously, so in atomization chamber, little water particle and cold air are mixed into mixed working fluid.Mixed working fluid is operation downwards under the swabbing action of system, enter the plate-fin heat exchange unit, and with the touching of the fin on cold limit, little water particle absorption refrigeration of vaporizing rapidly, simultaneously cold is delivered to hot limit, reaches till 100% up to gas relative humidity in the plate-fin heat exchange unit.Next this air-flow runs down in the next steam atomization chamber, by atomizer ejection atomized water particulate, forms the mixed working fluid under another temperature equally.Because slave plate fin type heat crosspoint cold limit fin temperature from top to bottom progressively raises, a part of little water particle so every process one deck plate-fin heat exchange unit can be vaporized, air-flow freezes through the vaporization of five different temperatures from top to bottom, and simultaneously the cold of making is exchanged to hot limit.The temperature of air-flow also rises because of constantly exchange heat from hot limit, and the air themperature that arrives at last in the storage tank can reach about 30 ℃, and relative humidity is 100%, and this air is sucked discharge by the outlet of storage tank.
Hot edge work is under normal pressure, and hot limit fin 18 is laterally installed, and reduces running resistance.Air-flow helps its operation by blower fan.Its operating path is: high temperature air is entered by the hot limit import of plate fin type heat exchanger, after entering next plate-fin heat exchange unit, hot limit mozzle carries out heat exchange carrying out heat exchange, and then enter the next one, discharge in exit, hot limit up to plate fin type heat exchanger, enters the room and regulate air themperature.If we are decided to be hot limit inlet temperature about 35 ℃, the temperature of hot limit outlet can drop to about 15 ℃.Wherein to enter temperature low more for the cold limit entrance point cold air of heat exchanger, and effect is good more.High-pressure hydraulic pump, water pipe, atomizer and steam atomization chamber are formed the atomization system of water, and its effect is that water is carried out high-quality as far as possible atomizing, and the little water particle that ejects is as much as possible little, and can mix with air equably, form mixed working fluid.
Claims (9)
1, a kind of air-air heat exchanger with refrigerating function, include cooling air pipeline, cooling air duct and heat exchange unit, described cooling air pipeline is connected in series mutually to be communicated with by heat exchange unit (5) Re Bian and pipeline and constitutes, and the cold limit of described heat exchange unit (5) is connected in the cooling air duct, it is characterized in that in the cooling air duct, being provided with steam atomization chamber (8), install atomizer (1) in the steam atomization chamber, atomizer and high-pressure water join.
2,, it is characterized in that described heat exchange unit (5) is the plate-fin heat exchange unit, installs by fork-countercurrent heat exchange method by the described air-air heat exchanger of claim 1 with refrigerating function.
3,, it is characterized in that described cooling air duct is the negative pressure shape by claim 1 or 2 described air-air heat exchangers with refrigerating function.
4,, it is characterized in that the stack of described heat exchange unit and steam atomization chamber vertical interlaced is formed by connecting by claim 1 or 2 described air-air heat exchangers with refrigerating function.
5, by claim 1 or 2 described air-air heat exchangers with refrigerating function, it is characterized in that described high-pressure water is by high-pressure pump (3) formation that links to each other with storage tank (7), storage tank links to each other with the cooling air duct, constitutes circulation spray high-pressure water thus.
6,, it is characterized in that described steam atomization chamber (8) is installed in the cooling air duct of each heat exchange unit (5) top by the described air-air heat exchanger of claim 4 with refrigerating function.
7, by claim 1 or 4 described air-air heat exchangers with refrigerating function, it is characterized in that described cooling air duct is connected in series to be communicated with by the cold limit of 3～6 heat exchange units and pipeline mutually constitutes, each heat exchange unit is installed vertically at interval, hot limit inlet, outlet end wherein is connected by water conservancy diversion bend pipe (2), be connected in series mutually, heat exchange unit one end and the hot limit air inlet pipe (11) of below are joined, be hot limit inlet end, heat exchange unit one end of the top is outlet side, hot limit, join with hot limit escape pipe (10), constitute the cooling air pipeline
8, by the described air-air heat exchanger of claim 2 with refrigerating function, it is characterized in that described plate-fin heat exchange unit comprises shell (12) and installs in the enclosure cold, hot limit fin (20,18), shell is provided with the adpting flange of four direction, cold, hot limit fin intersects to superpose along vertical and horizontal both direction respectively to be laid, isolate by strip of paper used for sealing (17) and side partition (19), make cold limit air-flow vertically move from the top down, hot limit air-flow is laterally circulation, cold, hot limit is isolated, be not communicated with mutually, by fin and dividing plate heat conduction, constitute fork-counter-flow heat exchange structure.
9, by the described air-air heat exchanger of claim 4 with refrigerating function, it is characterized in that each heat exchange unit up and down the inlet, outlet end at two ends be connected by tubular water vapour atomization chamber (8), form vertical interlaced stack syndeton up and down, wherein the heat exchange unit of the top is connected with cold limit air inlet pipe (4) through the steam atomization chamber, and steam atomization chamber and cold limit air inlet pipe link into an integrated entity, give vent to anger termination storage tank (7) and link to each other with cold limit escape pipe (9) of nethermost heat exchanger; Described high-pressure water constitutes circulation spray high-pressure water by high-pressure pump (3), water pipe (6) formation that links to each other with storage tank (7); The cold edge channel of each heat exchange unit and the tubular water vapour atomization chamber of joining and up and down cold limit be connected in series mutually into and out of tracheae, constitute the cooling air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100519263A CN100573014C (en) | 2007-04-20 | 2007-04-20 | Air-air heat exchanger with refrigerating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100519263A CN100573014C (en) | 2007-04-20 | 2007-04-20 | Air-air heat exchanger with refrigerating function |
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| Publication Number | Publication Date |
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| CN101038133A CN101038133A (en) | 2007-09-19 |
| CN100573014C true CN100573014C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100519263A Active CN100573014C (en) | 2007-04-20 | 2007-04-20 | Air-air heat exchanger with refrigerating function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061402B (en) * | 2017-11-30 | 2021-11-12 | 上海伊莱茨真空技术有限公司 | Vacuum atomization phase-change refrigeration equipment |
| CN114857802A (en) * | 2022-05-09 | 2022-08-05 | 北京工业大学 | Water and air mixing compression refrigerating system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372706A (en) * | 1972-03-06 | 1974-11-06 | V Ni I Pi Neftepererabatyvajus | Method of quenching products of processing of hydrocarbon raw materials |
| DE19637821A1 (en) * | 1996-09-17 | 1998-03-19 | Deutsche Forsch Luft Raumfahrt | Heat exchange processes and heat exchangers |
| US6164078A (en) * | 1999-03-04 | 2000-12-26 | Boeing North American Inc. | Cryogenic liquid heat exchanger system with fluid ejector |
-
2007
- 2007-04-20 CN CNB2007100519263A patent/CN100573014C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372706A (en) * | 1972-03-06 | 1974-11-06 | V Ni I Pi Neftepererabatyvajus | Method of quenching products of processing of hydrocarbon raw materials |
| DE19637821A1 (en) * | 1996-09-17 | 1998-03-19 | Deutsche Forsch Luft Raumfahrt | Heat exchange processes and heat exchangers |
| US6164078A (en) * | 1999-03-04 | 2000-12-26 | Boeing North American Inc. | Cryogenic liquid heat exchanger system with fluid ejector |
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| CN101038133A (en) | 2007-09-19 |
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Address after: 430074 No. 25, No. three, 3S geo information industry base, Hubei science and Technology Park, East Lake Development Zone, Wuhan, China Patentee after: China shipbuilding (Wuhan) Marine & Offshore Engineering Equipment Design Co., Ltd. Address before: 430074 No. 25, No. three, 3S geo information industry base, Hubei science and Technology Park, East Lake Development Zone, Wuhan, China Patentee before: Wuhan Wuchuan Ocean Engineering Ship Design Co., Ltd. |
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