CN107270591B - Two-phase distributor for falling film evaporator - Google Patents
Two-phase distributor for falling film evaporator Download PDFInfo
- Publication number
- CN107270591B CN107270591B CN201710605676.7A CN201710605676A CN107270591B CN 107270591 B CN107270591 B CN 107270591B CN 201710605676 A CN201710605676 A CN 201710605676A CN 107270591 B CN107270591 B CN 107270591B
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- Prior art keywords
- feed liquor
- plate
- liquid
- cavity
- bottom plate
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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
- F25B39/028—Evaporators having distributing means
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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
- F25B39/022—Evaporators with plate-like or laminated 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
- F25B2339/021—Evaporators in which refrigerant is sprayed on a surface to be cooled
Abstract
The invention relates to a two-phase distributor for a falling film evaporator, which comprises a large cavity, wherein the large cavity is a closed hollow structure consisting of a top plate, a bottom plate and peripheral side plates, the large cavity comprises a liquid inlet cavity and a plurality of liquid homogenizing cavities, the liquid inlet cavity is a closed hollow structure consisting of a liquid inlet top plate, a liquid inlet bottom plate, a distributing plate and side plates, liquid inlet holes are formed in the liquid inlet top plate, the liquid homogenizing cavities are closed hollow structures consisting of a partition plate, a liquid baffle plate, a liquid homogenizing plate, a distributing plate and side plates, the liquid inlet top plate and the liquid baffle plate are connected to form the top plate, the liquid inlet bottom plate and the liquid homogenizing plate are connected to form the bottom plate, the side plates are respectively connected to two sides of the distributing plate, the distributing plate and the side plates are respectively connected to two sides of the partition plate, at least one distributing hole is formed in the distributing plate of each liquid homogenizing cavity, and a plurality of uniformly distributed liquid homogenizing holes are formed in the liquid homogenizing plate. The invention has the characteristics of simple structure and uniform distribution.
Description
Technical Field
The invention relates to a distributor, in particular to a two-phase distributor for a falling film evaporator.
Background
A typical vapor compression refrigeration unit includes at least four basic components, a compressor, an evaporator, a condenser and an expansion and throttling device. The evaporator is used as a heat transfer component of a refrigeration system, the design of the evaporator is one of the most critical parts influencing the performance of a unit, the falling film evaporator is widely used, the advantages of the falling film evaporator are that the filling amount can be greatly reduced besides the high heat exchange performance, the oil return efficiency is high, and the defects of the two-phase distributor are that the structure is complex and the price is high.
Disclosure of Invention
In order to overcome the defects, the invention provides the two-phase distributor for the falling film evaporator, which is in single-layer distribution, has the advantages of simple structure, convenience in manufacturing and uniform distribution, and can reduce the cost of the falling film heat exchanger and improve the heat exchange performance.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a falling liquid film evaporator is with double-phase distributor, includes big cavity, big cavity is by roof, bottom plate and the closed hollow structure that curb plate all around constitutes, big cavity includes feed liquor cavity and a plurality of liquid cavity all around, the feed liquor cavity is by the feed liquor roof, feed liquor bottom plate, the closed hollow structure that break board and curb plate are constituteed, be equipped with the feed liquor hole on the feed liquor roof, the closed hollow structure that liquid cavity is constituteed by the division board, keeps off the liquid board, equal liquid board, break board and curb plate, the feed liquor roof is connected with the fender liquid board and is constituted the roof, the feed liquor bottom plate constitutes the bottom plate with equal liquid board connection, the curb plate is connected respectively to the both sides of division board, both sides of division board connect respectively break board and curb plate, constitute and are equipped with a plurality of evenly distributed's equal liquid hole on at least one distribution hole, the equal liquid board on the break board of every liquid cavity all.
Preferably, the feed liquor cavity is located the positive centre of big cavity, and its both sides symmetry distributes equally the liquid cavity, the feed liquor cavity comprises feed liquor roof, feed liquor bottom plate, two distributing plates and two curb plates.
Preferably, the feed liquor cavity is located the tip of big cavity, and its one side distributes and all becomes liquid cavity, the feed liquor cavity comprises feed liquor roof, feed liquor bottom plate, a distributing plate and three curb plate.
Preferably, the top plate and the bottom plate of the large chamber are parallel, and the distribution plate is perpendicular to the bottom plate.
Preferably, the separation plate is perpendicular to both the top plate and the distribution plate, and the separation plates are parallel to each other.
Preferably, the separation plates are perpendicular to the top plate and not perpendicular to the distribution plates, and an acute included angle smaller than 45 degrees is formed between the two separation plates forming a liquid equalizing chamber.
Preferably, the feed liquor roof and the feed liquor bottom plate of feed liquor cavity are parallel to each other, the equal liquid board of equal liquid cavity is parallel with the feed liquor roof, keeps off the oblique below extension of liquid board to the feed liquor roof to and equal liquid form between the board and be less than 45 acute angle contained angles, the break plate perpendicular to bottom plate.
Preferably, the partition plate is perpendicular to both the bottom plate and the distribution plate, and the partition plates are parallel to each other.
Preferably, the partition plate is perpendicular to the bottom plate and is not perpendicular to the distribution plate, and an acute included angle smaller than 45 degrees is formed between the two partition plates forming a liquid equalizing chamber.
Preferably, still include the feed liquor pipe of being connected with the feed liquor roof, the feed liquor pipe covers the feed liquor hole completely, the feed liquor hole is a plurality of evenly distributed's aperture.
The invention has the beneficial effects that: the invention is a single-layer, closed and hollow big chamber, which is divided into a liquid inlet chamber and a plurality of liquid equalizing chambers by a distributing plate and a separating plate. The gas-liquid two-phase refrigerant enters the liquid inlet chamber through a liquid inlet hole on the liquid inlet top plate under the driving of pressure, and then enters the plurality of relatively independent liquid equalizing chambers through distribution holes on a distribution plate on the side edge of the liquid inlet chamber, so that the first distribution is completed; and finally, the refrigerant entering the liquid equalizing chamber is uniformly sprayed on the surface of the heat exchange tube at the lower part of the liquid equalizing chamber through the liquid equalizing holes at the bottom of the liquid equalizing chamber, so that the secondary distribution of the refrigerant is completed. The invention completes the two-time distribution of the refrigerant by utilizing the single-layer structure, can ensure the uniform distribution of the refrigerant so as to provide the heat exchange performance of the whole heat exchanger, can weaken the impact of the refrigerant on the heat exchange pipe, is beneficial to prolonging the service life of the heat exchange pipe, and has the advantages of simple structure, lower cost and the like.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a top view of example 1 of the present invention;
FIG. 3 is a side view of example 1 of the present invention;
FIG. 4 is a top view of example 2 of the present invention;
FIG. 5 is a schematic structural view of example 3 of the present invention;
FIG. 6 is a schematic structural view of embodiment 4 of the present invention;
in the figure: 10-large chamber, 11-top plate, 12-bottom plate, 13-side plate, 20-liquid inlet chamber, 21-liquid inlet top plate, 211-liquid inlet hole, 22-liquid inlet bottom plate, 23-distribution plate, 231-distribution hole, 30-liquid homogenizing chamber, 31-separation plate, 32-liquid baffle plate, 33-liquid homogenizing plate, 331-liquid homogenizing hole and 40-liquid inlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-6, a two-phase distributor for falling film evaporator, including big cavity 10, big cavity 10 is the closed hollow structure who comprises roof 11, bottom plate 12 and curb plate 13 all around, big cavity 10 includes feed liquor cavity 20 and a plurality of equal liquid cavity 30, feed liquor cavity 20 is the closed hollow structure who comprises feed liquor roof 21, feed liquor bottom plate 22, break plate 23 and curb plate 13, be equipped with feed liquor hole 211 on the feed liquor roof 21, equal liquid cavity 30 is the closed hollow structure who comprises division plate 31, fender liquid board 32, equal liquid board 33, break plate 23 and curb plate 13, feed liquor roof 21 and fender liquid board 32 connect and constitute roof 11, feed liquor bottom plate 22 and equal liquid board 33 connect and constitute bottom plate 12, curb plate 13 is connected respectively to the both sides of break plate 23, break plate 23 and curb plate 13 are connected respectively to the both sides of division plate 31, constitute every equal liquid cavity 30's the distribution hole 231 that is equipped with on the break plate 23 at least, be equipped with a plurality of evenly distributed's equal liquid hole 331 on the equal liquid board 33. The liquid inlet structure is characterized by further comprising a liquid inlet pipe 40 connected with the liquid inlet top plate 21, the liquid inlet hole 211 is completely covered by the liquid inlet pipe 40, and the liquid inlet hole 211 is a plurality of small holes which are uniformly distributed. The liquid inlet hole 211, the dispensing hole 231 and the liquid equalizing hole 331 can be circular in the figure, and can also be in other shapes such as oval and square, and the hole diameter can be determined according to actual conditions. The invention is a large chamber 10 with a closed and hollow structure, and the large chamber 10 is divided into a liquid inlet chamber 20 and a plurality of liquid equalizing chambers 30 by a distributing plate 23 and a dividing plate 31. The bottom plate 12 is of an integral structure, and the distribution plate 23 divides the bottom plate into a liquid inlet bottom plate and a liquid homogenizing plate along the length direction; the liquid-uniforming plate 33 is divided into a plurality of liquid-uniforming plates by partition plates 31 in the width direction thereof. The gas-liquid two-phase refrigerant enters the liquid inlet chamber 20 through the liquid inlet hole 211 on the liquid inlet top plate 21 under the driving of pressure, the liquid inlet pipe 40 is connected on the liquid inlet hole, and the smooth injection of the refrigerant into the liquid inlet chamber 20 is ensured through the guiding of the liquid inlet pipe. Distribution holes 231 are formed in the distribution plate 23 on the side of the liquid inlet chamber, and each liquid equalizing chamber 30 corresponds to one or more distribution holes, so that refrigerants entering the liquid inlet chamber 20 respectively enter a plurality of relatively independent liquid equalizing chambers through the distribution holes to complete first distribution. The liquid-equalizing plate 33 at the bottom of each liquid-equalizing chamber uniformly distributes a plurality of liquid-equalizing holes 331 along the transverse direction of the liquid-equalizing chamber, so that the refrigerant entering the liquid-equalizing chamber is uniformly sprayed on the surface of the heat exchange tube at the lower part thereof through the liquid-equalizing holes at the bottom of the liquid-equalizing chamber, and the secondary distribution of the refrigerant is completed. The invention completes the two-time distribution of the refrigerant by utilizing the single-layer structure, can ensure the uniform distribution of the refrigerant so as to improve the heat exchange performance of the whole heat exchanger, can weaken the impact of the refrigerant on the heat exchange pipe, is beneficial to prolonging the service life of the heat exchange pipe, and has the advantages of simple structure, lower cost and the like.
In embodiment 1, as shown in fig. 1 to 3, the liquid inlet chamber 20 is located in the middle of the large chamber 10, liquid equalizing chambers 30 are symmetrically distributed on both sides of the liquid inlet chamber 20, the liquid inlet chamber 20 is composed of a liquid inlet top plate 21, a liquid inlet bottom plate 22, two distribution plates 23 and two side plates 13, the top plate 11 and the bottom plate 12 of the large chamber 10 are parallel, the distribution plates 23 are perpendicular to the bottom plate 12, the separation plates 31 are perpendicular to both the top plate 11 and the distribution plates 23, and the separation plates 31 are parallel to each other. The feed liquor cavity 20 is located the middle part of big cavity 10, and through two parallel distributing plates 23 with big cavity longitudinal segmentation into a feed liquor cavity 20 and be located feed liquor cavity both sides region, both sides region is divided into a plurality of independent and evenly distributed's equal liquid cavity respectively through the width direction of the division board 31 of a plurality of parallels along big cavity.
In embodiment 2, as shown in fig. 4, the partition plate 31 is perpendicular to the top plate and not perpendicular to the distribution plate 23, and an acute included angle of less than 45 ° is formed between two partition plates 31 forming a liquid-equalizing chamber 30. Unlike embodiment 1, the partition plates are not parallel to each other, and the distance between the two partition plates 31 of a uniform liquid chamber 30 is gradually reduced from the end of the distribution plate 23 to the end of the side plate.
Embodiment 3, as shown in fig. 5, the feed liquor roof 21 and the feed liquor bottom plate 22 of feed liquor cavity 20 are parallel to each other, the equal liquid board 33 and the feed liquor roof of equal liquid cavity are parallel, and the oblique below extension of liquid baffle 32 to feed liquor roof 21 to and equal liquid board 33 between form the acute angle contained angle that is less than 45, distributing plate 23 is perpendicular to bottom plate 12. Unlike embodiment 1, the liquid baffle 32 is inclined to stop the refrigerant in horizontal and vertical directions, and the partition plates in this embodiment may be arranged in parallel or at a certain angle. The partition plate 31 is perpendicular to both the bottom plate 12 and the distribution plate 23, and the partition plates 31 are parallel to each other; or the division plates 31 are perpendicular to the bottom plate 12 and are not perpendicular to the distribution plate 23, and an acute included angle smaller than 45 degrees is formed between the two division plates 31 forming a liquid equalizing chamber 30.
Embodiment 4, as shown in fig. 6, the liquid inlet chamber 20 is located at the end of the large chamber 10, and a liquid equalizing chamber 30 is distributed on one side of the liquid inlet chamber 20, and the liquid inlet chamber 20 is composed of a liquid inlet top plate 21, a liquid inlet bottom plate 22, a distribution plate 23 and three side plates 13. The liquid inlet chamber 20 is located at one end of the large chamber 10, the large chamber is longitudinally divided into the liquid inlet chamber 20 and a side area through a distribution plate 23, and the side area is divided into a plurality of independent and uniformly distributed liquid equalizing chambers along the width direction of the large chamber through a plurality of parallel partition plates 31. The liquid barrier in this illustration is inclined but may of course also be arranged horizontally, i.e. parallel to the bottom plate.
The working process of the invention is as follows: as shown in fig. 5, the gas-liquid two-phase refrigerant enters the liquid inlet chamber 20 through the liquid inlet pipe 40 and the liquid inlet holes 211 on the liquid inlet top plate 21 under the driving of pressure, and then enters the plurality of relatively independent liquid equalizing chambers 30 on both sides through the distribution holes 231 on the distribution plates 23 on both sides of the liquid inlet chamber 20, so as to complete the first distribution; the liquid-equalizing plate 33 at the bottom of each liquid-equalizing chamber is uniformly provided with a plurality of liquid-equalizing holes 331 along the transverse direction of the liquid-equalizing chamber, so that the refrigerant entering the liquid-equalizing chamber 30 is uniformly sprayed on the surface of the heat exchange tube at the lower part thereof through the liquid-equalizing holes 331 at the bottom of the liquid-equalizing chamber, and the secondary distribution of the refrigerant is completed.
It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A two-phase distributor for a falling film evaporator is characterized in that: including big chamber (10), big chamber (10) are by roof (11), bottom plate (12) and the closed hollow structure who constitutes of curb plate (13) all around, big chamber (10) include feed liquor cavity (20) and a plurality of equal liquid cavity (30), feed liquor cavity (20) are by feed liquor roof (21), feed liquor bottom plate (22), the closed hollow structure who constitutes of break board (23) and curb plate (13), be equipped with feed liquor hole (211) on feed liquor roof (21), equal liquid cavity (30) are by division board (31), keep off liquid board (32), equal liquid board (33), the closed hollow structure who constitutes of break board (23) and curb plate (13), feed liquor roof (21) and keep off liquid board (32) are connected and are constituted roof (11), feed liquor bottom plate (22) and equal liquid board (33) are connected and are constituted bottom plate (12), curb plate (13) are connected respectively to the both sides of break board (23), be equipped with on the both sides of division board (31) respectively and connect break board (23) and curb plate (13), constitute equal liquid cavity (30) and go up the equal liquid hole (231), equal liquid distribution board (33) of at least one even distribution (231), even distribution board (331) are equipped with each.
2. The two-phase distributor for a falling film evaporator according to claim 1, wherein: feed liquor cavity (20) are located the positive centre of big cavity (10), and its both sides symmetry distributes equal liquid cavity (30), feed liquor cavity (20) comprise feed liquor roof (21), feed liquor bottom plate (22), two distributing plates (23) and two curb plates (13).
3. The two-phase distributor for a falling film evaporator according to claim 1, wherein: feed liquor cavity (20) are located the tip of big cavity (10), and its one side distributes and is equal liquid cavity (30), feed liquor cavity (20) comprise feed liquor roof (21), feed liquor bottom plate (22), one distributing plate (23) and three curb plate (13).
4. A two-phase distributor for a falling film evaporator according to any of claims 1 to 3, characterized in that: the top plate (11) and the bottom plate (12) of the large chamber (10) are parallel, and the distribution plate (23) is vertical to the bottom plate (12).
5. The two-phase distributor for a falling film evaporator according to claim 4, wherein: the separation plate (31) is vertical to the top plate (11) and the distribution plate (23), and the separation plates (31) are parallel to each other.
6. The two-phase distributor for a falling film evaporator according to claim 4, wherein: the partition plates (31) are perpendicular to the top plate and are not perpendicular to the distribution plates (23), and an acute included angle smaller than 45 degrees is formed between the two partition plates (31) forming a liquid equalizing chamber (30).
7. A two-phase distributor for a falling film evaporator according to any of claims 1 to 3, characterized in that: feed liquor roof (21) and feed liquor bottom plate (22) of feed liquor cavity (20) are parallel to each other, equal liquid board (33) and the feed liquor roof of equal liquid cavity are parallel, keep off the oblique below extension of liquid board (32) to feed liquor roof (21) to and equal liquid board (33) between form the acute angle contained angle that is less than 45, break-over plate (23) perpendicular to bottom plate (12).
8. The two-phase distributor for a falling film evaporator according to claim 7, wherein: the partition plates (31) are perpendicular to the bottom plate (12) and the distribution plates (23), and the partition plates (31) are parallel to each other.
9. The two-phase distributor for a falling film evaporator according to claim 7, wherein: the partition plates (31) are perpendicular to the bottom plate (12) and are not perpendicular to the distribution plates (23), and an acute included angle smaller than 45 degrees is formed between the two partition plates (31) forming a liquid equalizing chamber (30).
10. The two-phase distributor for a falling film evaporator according to claim 1, wherein: still include feed liquor pipe (40) of being connected with feed liquor roof (21), feed liquor pipe (40) covers feed liquor hole (211) completely, feed liquor hole (211) are a plurality of evenly distributed's aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605676.7A CN107270591B (en) | 2017-07-24 | 2017-07-24 | Two-phase distributor for falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710605676.7A CN107270591B (en) | 2017-07-24 | 2017-07-24 | Two-phase distributor for falling film evaporator |
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| Publication Number | Publication Date |
|---|---|
| CN107270591A CN107270591A (en) | 2017-10-20 |
| CN107270591B true CN107270591B (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710605676.7A Active CN107270591B (en) | 2017-07-24 | 2017-07-24 | Two-phase distributor for falling film evaporator |
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| CN (1) | CN107270591B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709343B (en) * | 2018-05-29 | 2021-01-08 | 冰轮环境技术股份有限公司 | Ammonia working medium liquid distributor |
| CN109737648A (en) * | 2019-03-07 | 2019-05-10 | 英特换热设备(浙江)有限公司 | A kind of falling film evaporator and its two-phase fluidic distributor |
| CN117628930A (en) * | 2022-08-18 | 2024-03-01 | 丹佛斯有限公司 | Heat exchanger |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5547560B2 (en) * | 2010-06-18 | 2014-07-16 | 荏原冷熱システム株式会社 | Absorption heat pump |
| CN102661638B (en) * | 2012-04-18 | 2014-03-12 | 重庆美的通用制冷设备有限公司 | Refrigerant distributor of falling film evaporator for water chilling unit |
| WO2013160954A1 (en) * | 2012-04-26 | 2013-10-31 | 三菱電機株式会社 | Heat exchanger, and refrigerating cycle device equipped with heat exchanger |
| CN203224070U (en) * | 2013-04-15 | 2013-10-02 | 美意(浙江)空调设备有限公司 | Liquid pouring type heat exchanger |
| CN103216976B (en) * | 2013-04-15 | 2015-07-29 | 美意(浙江)空调设备有限公司 | A kind of pouring liquid formula heat exchanger |
| KR102079722B1 (en) * | 2013-04-18 | 2020-02-20 | 삼성전자주식회사 | Heat exchanger |
| CN203550303U (en) * | 2013-07-16 | 2014-04-16 | 浙江英谷节能设备有限公司 | Refrigerant distributor for vapor compression refrigerating unit falling film evaporator |
| JP6145189B1 (en) * | 2016-02-29 | 2017-06-07 | 三菱重工業株式会社 | Heat exchanger and air conditioner |
| CN207073971U (en) * | 2017-07-24 | 2018-03-06 | 江苏必领能源科技有限公司 | Falling film evaporator two-phase partitioning device |
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2017
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