CN112856861B - Liquid distributor of falling film evaporator and manufacturing method thereof - Google Patents
Liquid distributor of falling film evaporator and manufacturing method thereof Download PDFInfo
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- CN112856861B CN112856861B CN202110141474.8A CN202110141474A CN112856861B CN 112856861 B CN112856861 B CN 112856861B CN 202110141474 A CN202110141474 A CN 202110141474A CN 112856861 B CN112856861 B CN 112856861B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a liquid distributor of a falling film evaporator and a manufacturing method thereof, comprising a bottom liquid distribution plate and a top cover plate which is covered on the bottom liquid distribution plate, wherein a liquid distribution cavity is defined by the bottom liquid distribution plate and the top cover plate, an upper layer liquid distribution plate and a middle layer liquid distribution plate are distributed in the cavity along the height direction, and a first layer liquid distribution area, a second layer liquid distribution area and a third layer liquid distribution area are separated. The upper liquid distribution plate is provided with a vertical distribution hole and a horizontal distribution hole, the middle liquid distribution plate is provided with a through distribution hole, and the bottom liquid distribution plate is provided with a flanging stretching hole communicated with the third liquid distribution region. After a certain pressure is applied to the refrigerant and is pressed into the first layer liquid distribution area through the inlet connecting pipe, the refrigerant is sprayed to the second layer liquid distribution area at a high speed through the vertical distribution holes and the horizontal distribution holes of the upper layer liquid distribution plate, and then the refrigerant passes through the middle layer liquid distribution plate and the bottom layer liquid distribution plate in a decelerating way in sequence, so that fine and uniform distribution of the refrigerant is realized.
Description
Technical Field
The invention belongs to the technical field of refrigeration machinery, and particularly relates to a liquid distributor for a falling film evaporator.
Background
The refrigerating system consists of a compressor, a condenser, an expansion valve, an evaporator and a refrigerant, wherein the evaporator is mainly divided into three types: dry evaporators, flooded evaporators and falling film evaporators. The falling film evaporator has the advantages of high heat exchange efficiency, small refrigerant filling amount and the like, and is widely applied to large-scale water chilling units.
The falling film evaporator mainly comprises a shell, a liquid distributor and an evaporating pipe, wherein the liquid distributor is arranged at an upper position in the shell, meanwhile, a refrigerant liquid inlet pipe is connected to the liquid distributor, and the evaporating pipe is arranged in the shell below the liquid distributor according to a certain rule. The working process of the falling film evaporator is that the refrigerant enters the liquid distributor from the liquid inlet pipe, is distributed by the liquid distributor, is uniformly distributed into a film shape on the evaporation pipe below, and the liquid refrigerant absorbs heat and evaporates, so that cold and heat exchange is completed, and the refrigerant steam enters the compressor and is compressed to the condenser.
The liquid distributor of the falling film evaporator can be divided into a gravity type liquid distributor and a pressure type liquid distributor, wherein the gravity type liquid distributor is mainly used for dripping the liquid onto the surface of an evaporation tube under the action of the self gravity of a refrigerant to form a uniform thin liquid film, so that cold and heat exchange is completed; the pressure type liquid distributor applies certain pressure to the refrigerant to spray the refrigerant onto the surface of the evaporating pipe.
When refrigerant is uniformly distributed, particularly refrigerant in a gas-liquid mixed state, a uniform and stable liquid film is difficult to form on an evaporation tube, and the heat exchange efficiency is greatly reduced. Therefore, the uniformity of the liquid distribution of the liquid distributor is directly related to the heat exchange efficiency of the evaporator.
With the development of refrigeration industry, the focus of industry innovation is focused on optimizing the structure of a liquid distributor of a falling film evaporator. For example 201810879931.1, a liquid distributor is provided, which comprises an upper sealing plate and a lower shell, wherein the upper sealing plate and the lower shell jointly enclose a liquid distribution cavity, and a first liquid-homogenizing plate and a second liquid-homogenizing plate are arranged in the liquid distribution cavity. Through the equal liquid of cubic to and add a plurality of support bars between last shrouding and the first equal liquid board, guarantee the joint strength between first equal liquid board and the last shrouding to guarantee that the refrigerant that gets into the inside cloth liquid ware can the average. Although the support bar ensures the connection strength of the first liquid-homogenizing plate and the upper sealing plate, the support bar brings certain complexity to the manufacturing process and has limited promotion of the uniform-dividing effect.
As another example 201810958278.8, there is provided a liquid distributor comprising a liquid inlet plate, a liquid distributor plate, and at least two layers of liquid distributor plates through which the refrigerant entering from the liquid inlet holes flows. And a flow equalization piece is additionally arranged between the liquid inlet plate and the liquid distribution plate, so that the refrigerant flowing out of the liquid inlet plate can be equalized through the flow equalization piece in the process of entering the liquid distribution plate, the flow uniformity of the refrigerant flowing into the liquid distribution plate is ensured, and the uniformity of the refrigerant flowing onto the evaporating pipe at last can be ensured. However, the added flow equalization member is difficult to ensure uniform distribution of the refrigerant in the length and width directions of the evaporator, and in addition, the complicated matching structure of the flow equalization member definitely brings about cost rise.
Therefore, the liquid distributor has the problem of uneven liquid distribution through the adjustment of the structure, and the additionally arranged structure increases the difficulty of the manufacturing process of the liquid distributor.
Disclosure of Invention
The invention aims to provide a liquid distributor of a falling film evaporator and a manufacturing method thereof, which are used for solving the problem of non-uniform liquid distribution in the prior art. In order to achieve the above purpose, the invention provides a three-stage liquid distribution system, when the refrigerant passes through the upper liquid distribution plate, uniform and coarse distribution in the length and width directions can be achieved, and further fine and uniform distribution of the refrigerant is achieved through the middle liquid distribution plate and the bottom liquid distribution plate.
The liquid distributor of the falling film evaporator comprises a bottom layer liquid distribution plate and a top cover plate covered on the bottom layer liquid distribution plate, wherein a cavity surrounded by the top cover plate and the bottom layer liquid distribution plate is a liquid distribution cavity; an upper liquid distribution plate and a middle liquid distribution plate are arranged in the liquid distribution cavity in parallel along the height direction, and the liquid distribution cavity is divided into a first liquid distribution area, a second liquid distribution area and a third liquid distribution area; the top cover plate is provided with an inlet connecting pipe communicated with the first layer liquid distribution area, and the center of a circle intersecting the inlet connecting pipe and the top cover plate is arranged on the symmetrical axis of the top cover plate along the length direction; the edges of the upper liquid distribution plate are bent and vertically formed to form side walls, and a plurality of upper liquid distribution plate vertical distribution holes and upper liquid distribution plate horizontal distribution holes are respectively distributed on the plate surface and the side walls of the upper liquid distribution plate at equal intervals; fluid enters the first layer liquid distribution area through the inlet connecting pipe, and the liquid inlet end of the first layer liquid distribution area is wider than the liquid outlet end; a plurality of through middle cloth liquid plate distribution holes are arranged on the middle cloth liquid plate; the bottom layer liquid distribution plate is provided with a flanging stretching hole communicated with the third layer liquid distribution area; the distribution hole area of the upper liquid distribution plate, the distribution hole area of the middle liquid distribution plate and the flanging stretching hole area of the bottom liquid distribution plate are sequentially increased.
After a certain pressure is applied to the refrigerant and is pressed into the first layer liquid distribution area through the inlet connecting pipe, the refrigerant sprayed at a high speed is reduced in speed and pressure after being uniformly distributed through the vertical distribution holes of the upper layer liquid distribution plate and the horizontal distribution holes of the upper layer liquid distribution plate, so that a relatively uniformly distributed pressure cavity is formed in the second layer liquid distribution area. The refrigerant is sequentially decelerated through the middle layer liquid distribution plate and the bottom layer liquid distribution plate under the action of pressure and gravity, and finally is distributed to the heat exchange tube bundles in a columnar shape at a low speed from the flanging stretching holes of the bottom layer liquid distribution plate, so that fine and uniform distribution of the refrigerant is realized.
Specifically, the face of upper liquid distribution plate is isosceles trapezoid, and the import is taken over and is close to the wider one end of upper liquid distribution plate, and first layer liquid distribution area is wedge groove form.
Specifically, the upper liquid distribution plate has two symmetrical sides and middle part wider than two ends, the inlet connecting pipe is arranged in the geometric center of the top cover plate, and the first liquid distribution area is in the shape of a shuttle-shaped groove.
Specifically, the vertical distance between the upper liquid distribution plate and the plate surface of the middle liquid distribution plate is 10-15 mm.
Specifically, the projection of any upper liquid distribution plate vertical distribution hole on the middle liquid distribution plate is not overlapped with the middle liquid distribution plate distribution hole.
Specifically, the projection of the vertical distribution holes of the upper layer liquid distribution plate on the middle layer liquid distribution plate is positioned at the center position of a parallelogram formed by sequentially connecting the circle centers of the distribution holes of the four adjacent middle layer liquid distribution plates.
Specifically, the projection of any middle cloth liquid plate distribution hole on the bottom cloth liquid plate is not overlapped with the flanging stretching hole of the bottom cloth liquid plate.
Specifically, the projection of the middle layer cloth liquid plate distribution holes on the bottom layer cloth liquid plate is positioned at the center position of a parallelogram formed by sequentially connecting the circle centers of the flanging stretching holes of the four adjacent bottom layer cloth liquid plates.
Specifically, the middle layer cloth liquid plate is supported by a plurality of fixed supporting sheets arranged on the bottom layer cloth liquid plate.
Specifically, the assembling method of the liquid distributor of the falling film evaporator comprises the steps of (a) positioning and fixing a top cover plate and an upper liquid distribution plate, and then sealing and fixedly connecting the top cover plate and the upper liquid distribution plate; (b) The inlet connecting pipe and the assembly in the step (a) are fixedly positioned and then are fixedly connected in a sealing way; (c) The fixed supporting sheet is fixedly connected to the bottom layer liquid distribution plate, supports the middle layer liquid distribution plate, and seals and fixedly connects the bottom layer liquid distribution plate and the upper edge of the middle layer liquid distribution plate after the bottom layer liquid distribution plate and the upper edge of the middle layer liquid distribution plate are kept at the same height; (d) Covering the assembly in the step (b) on the assembly in the step (c), mutually fixing, sealing and fixedly connecting, and completing the assembly of the liquid distributor.
According to the three-stage liquid distribution system provided by the invention, when the refrigerant passes through the upper liquid distribution plate, uniform coarse distribution in the length and width directions can be realized, the speed and the pressure are reduced, and a relatively uniform pressure cavity is formed. Further, the fine and uniform distribution of the refrigerant is realized through the middle layer liquid distribution plate and the bottom layer liquid distribution plate.
Drawings
FIG. 1 is a schematic view of the liquid distributor of the end falling film evaporator of the present invention;
FIG. 2 is an exploded schematic view of a liquid distributor of the end falling film evaporator of the present invention;
FIG. 3 is a schematic cross-sectional view of a liquid distributor of an end falling film evaporator of the present invention;
FIG. 4 is a schematic view of the liquid distributor of the middle falling film evaporator of the present invention;
FIG. 5 is a schematic diagram of a liquid distributor explosion of the middle falling film evaporator of the present invention;
the reference numerals in the figures illustrate: 1-an inlet connection; 2-top cover plate; 3-upper liquid distribution plate; 31-upper liquid distribution plate vertical distribution holes; 32-upper liquid distribution plate horizontal distribution holes; 4-middle layer liquid distribution plate; 41-middle layer cloth liquid plate distributing holes; 5-a bottom layer liquid distribution plate; 51-flanging and stretching holes of the bottom cloth liquid plate; 6-fixing the supporting sheet; 7-a liquid distribution cavity; 71-a first layer liquid distribution area; 72-a second layer liquid distribution area; 73-third layer liquid distribution area.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the following examples and the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, 2 and 3, there are an external schematic view, an exploded schematic view and a cross-sectional schematic view of an embodiment of a liquid distributor of an end falling film evaporator according to the present invention. The liquid distributor of the falling film evaporator comprises a top cover plate 2 and a bottom liquid distribution plate 5, the edges of the top cover plate 2 and the bottom liquid distribution plate 5 are bent and erected to form side walls, the top cover plate 2 is covered on the bottom liquid distribution plate 5 to form a rectangular box, and a cavity enclosed by the inside is a liquid distribution cavity 7. It will be appreciated that in other embodiments, the top cover plate 2 may be configured to cover the underlying fabric liquid panel 5. The upper liquid distribution plate 3 and the middle liquid distribution plate 4 are arranged in the liquid distribution cavity 7 in parallel along the height direction, the liquid distribution cavity 7 is divided into three distribution areas along the height direction, and the first liquid distribution area 71, the second liquid distribution area 72 and the third liquid distribution area 73.
The liquid distributor for manufacturing the falling film evaporator comprises the following steps of:
(1) The upper liquid distribution plate 3 has isosceles trapezoid surface, and its edge is bent and erected to form side wall. The top cover plate 2 and the upper liquid distribution plate 3 are fixed, and the upper liquid distribution plate 3 is fixedly arranged below the top cover plate 2 in a sealing welding mode and the like. When the fixing is performed, the projection of the symmetry line in the length direction of the top cover plate on the upper liquid distribution plate 3 is required to be ensured to coincide with the symmetry line of the upper liquid distribution plate 3. The top cover plate 2 and the upper liquid distribution plate 3 enclose a first liquid distribution area 71 with a wedge-shaped groove shape and one wide end and one narrow end.
(2) The top cover plate 2 is fixedly provided with an inlet connecting pipe 1 communicated with the first layer liquid distribution area 71 in a sealing welding mode and the like, and the circle center of an intersecting circle of the inlet connecting pipe 1 and the top cover plate 2 is arranged on the symmetrical axis of the length direction of the top cover plate 2 and is close to one end with wider wedge-shaped groove shape. The upper liquid distribution plate 3 is provided with a plurality of upper liquid distribution plate vertical distribution holes 31 and upper liquid distribution plate horizontal distribution holes 32 on the plate surface and the side wall respectively.
(3) The bottom cloth liquid plate 5 is provided with a bottom cloth liquid plate flanging stretching hole 51, and the middle cloth liquid plate 4 is provided with a plurality of through middle cloth liquid plate distributing holes 41. The middle layer liquid distribution plate 4 is supported by a plurality of wedge-shaped fixed supporting pieces 6 which are arranged on the bottom layer liquid distribution plate 5, and the bottom layer liquid distribution plate 5 and the middle layer liquid distribution plate 4 enclose a third layer liquid distribution area 73.
The big end of the wedge-shaped fixed supporting piece 6 is fixedly arranged on the bottom cloth liquid plate 5, and the fixed supporting piece 6 is perpendicular to the surface of the bottom cloth liquid plate 5. The middle layer cloth liquid plate 4 is provided with corresponding through holes, and the tip ends of the fixed supporting pieces 6 can pass through the through holes so as to support the middle layer cloth liquid plate 4. The edges of the middle layer cloth liquid plate 4 are bent and erected into side walls, the side walls are sleeved in the side walls of the bottom layer cloth liquid plate 5, the middle layer cloth liquid plate 4 and the two side walls of the bottom layer cloth liquid plate 5 are kept at the same height, the top ends of the two side walls are fixedly connected in a welding mode and the like, and therefore sealing of the third layer cloth liquid area 73 is guaranteed.
(4) The inlet connecting pipe 1, the top cover plate 2 and the upper liquid distribution plate 3 are fixedly connected on the middle liquid distribution plate 4 and the bottom liquid distribution plate 5, and after the two components are fixedly and firmly fixed by a special fixing clamp, the positions covered by the top cover plate 2 and the bottom liquid distribution plate are fixedly connected in a sealing welding mode. The top cover plate 2, the upper liquid distribution plate 3 and the middle liquid distribution plate 4 form a second liquid distribution area 72.
Further, the vertical distance between the surface of the upper liquid distribution plate 3 and the surface of the middle liquid distribution plate 4 is 10-15 mm.
Further, the area sum of the distribution holes 41 of the middle-layer liquid distribution plate 4 is larger than the area sum of the distribution holes of the upper-layer liquid distribution plate 3, and the projection of the distribution holes of any upper-layer liquid distribution plate 04 on the middle-layer liquid distribution plate 4 is not overlapped with the distribution holes 41 of the middle-layer liquid distribution plate.
Further, the projection of the vertical distribution holes 31 of the upper layer liquid distribution plate on the middle layer liquid distribution plate 4 is positioned at the center of a parallelogram formed by sequentially connecting the circle centers of the distribution holes of the adjacent four middle layer liquid distribution plates.
Further, the area sum of the stretching holes of the bottom cloth liquid sheet 5 is larger than the area sum of the distributing holes 41 of the middle cloth liquid sheet. The projection of any middle cloth liquid plate distributing hole 41 on the bottom cloth liquid plate 5 is not overlapped with the stretching hole of the bottom cloth liquid plate 5.
Further, the projections of the middle layer liquid distribution plate distribution holes 41 on the bottom layer liquid distribution plate 5 are positioned at the center of a parallelogram formed by sequentially connecting the centers of the stretching holes of the four adjacent bottom layer liquid distribution plates.
When a certain pressure is applied to the refrigerant, the refrigerant is pressed into the first liquid distribution area 71 by the inlet connecting pipe 1, and flows from one wider end of the first liquid distribution area 71 to the other narrower end. The refrigerant is uniformly distributed in the length direction and the width direction under the action of pressure and gravity by spraying the liquid distribution plate at high speed vertically downwards through the upper liquid distribution plate vertical distribution holes 31 and horizontally through the upper liquid distribution plate horizontal distribution holes 32. The primarily equally divided refrigerant sequentially enters the second layer liquid distribution area 72 and the third layer liquid distribution area 73, and the liquid distribution for the second time and the third time is finely distributed. And finally, the refrigerant is precisely distributed to the upper part of the efficient heat exchange tube in a columnar flowing form at a lower speed.
As shown in fig. 4 and 5, there is a schematic exterior view and an exploded schematic view, respectively, of one embodiment of a liquid distributor of a middle falling film evaporator of the present invention. The inlet connection pipe 1 is arranged at the right center of the top cover plate 2. The upper liquid distribution plate 3 has a strip shape, and gradually narrows from the symmetry line in the width direction to the two ends, and the top cover plate 2 and the upper liquid distribution plate 3 enclose a first liquid distribution area 71 with a groove shape and a wide middle and two narrow ends. The rest of the structure is the same as the end falling film evaporator liquid distributor embodiment.
The refrigerant enters the first liquid distribution area 71 from the inlet connecting pipe 1, gradually flows to the two narrower ends from the wider middle part, and is sprayed at high speed through the vertical distribution holes 31 and the horizontal distribution holes 32 of the upper liquid distribution plate. By uniformly distributing the pressure and gravity of the first liquid distribution area 71, the refrigerant is uniformly distributed in the length direction and the width direction. The remainder is the same as the end falling film evaporator liquid distributor embodiment.
The falling film evaporator comprises an evaporator shell, the falling film evaporator liquid distributor and an evaporation pipe, wherein the falling film evaporator liquid distributor is arranged at the top in the evaporator shell, and the evaporation pipe is arranged in the evaporator shell and is positioned below the liquid distributor.
A refrigeration device comprises the falling film evaporator or the falling film evaporator liquid distributor.
The above examples merely represent a few embodiments of the present invention, which are described in detail, but are not to be construed as limiting the scope of the patent. It should be noted that many variations and modifications can be made by those skilled in the art without departing from the spirit of the invention, which fall within the scope of the invention. Accordingly, the protection scope of this patent shall be subject to the appended claims.
Claims (8)
1. The liquid distributor of the falling film evaporator comprises a bottom layer liquid distribution plate and a top cover plate covered on the bottom layer liquid distribution plate, wherein a cavity surrounded by the top cover plate and the bottom layer liquid distribution plate is a liquid distribution cavity; the upper liquid distribution plate and the middle liquid distribution plate are arranged in the liquid distribution cavity in parallel along the height direction, the liquid distribution cavity is divided into a first liquid distribution area, a second liquid distribution area and a third liquid distribution area by the upper liquid distribution plate and the middle liquid distribution plate, the first liquid distribution area is positioned in the second liquid distribution area, and the width of the first liquid distribution area is smaller than that of the second liquid distribution area; the top cover plate is provided with an inlet connecting pipe communicated with the first layer liquid distribution area, and the center of a circle intersecting the inlet connecting pipe and the top cover plate is arranged on the symmetrical axis of the top cover plate along the length direction; a plurality of through middle cloth liquid plate distribution holes are arranged on the middle cloth liquid plate; the bottom cloth liquid plate is provided with bottom cloth liquid plate flanging stretching holes communicated with the third layer liquid distribution area, and is characterized in that:
the edges of the upper liquid distribution plate are bent and vertically formed to form side walls, and a plurality of upper liquid distribution plate vertical distribution holes and upper liquid distribution plate horizontal distribution holes are respectively distributed on the plate surface and the side walls of the upper liquid distribution plate at equal intervals;
the fluid medium enters the first layer liquid distribution area through the inlet connecting pipe, and the liquid inlet end of the first layer liquid distribution area is wider than the liquid outlet end;
the distribution hole area of the upper liquid distribution plate, the distribution hole area of the middle liquid distribution plate and the flanging and stretching hole area of the bottom liquid distribution plate are sequentially increased;
the vertical distance between the upper liquid distribution plate and the plate surface of the middle liquid distribution plate is 10-15 mm; the projection of any upper liquid distribution plate vertical distribution hole on the middle liquid distribution plate is not overlapped with the middle liquid distribution plate distribution hole.
2. A falling film evaporator liquid distributor as set forth in claim 1 wherein: the face of upper liquid distribution plate is isosceles trapezoid, and the inlet connecting pipe is close to the wider one end of upper liquid distribution plate, and the first liquid distribution area is wedge-shaped groove.
3. A falling film evaporator liquid distributor as set forth in claim 1 wherein: the upper liquid distribution plate is symmetrical on two sides of the plate surface, the middle part of the upper liquid distribution plate is wider than the two ends, the inlet connecting pipe is arranged at the geometric center of the top cover plate, and the first liquid distribution area is in a shuttle-shaped groove shape.
4. A falling film evaporator liquid distributor as set forth in claim 1 wherein: the projection of the vertical distribution holes of the upper liquid distribution plate on the middle liquid distribution plate is positioned at the center position of a parallelogram formed by sequentially connecting the circle centers of the distribution holes of the four adjacent middle liquid distribution plates.
5. The falling film evaporator liquid distributor as set forth in claim 4, wherein: the projection of any middle cloth liquid plate distribution hole on the bottom cloth liquid plate is not overlapped with the flanging stretching hole of the bottom cloth liquid plate.
6. A falling film evaporator liquid distributor as set forth in claim 5 wherein: the projection of the middle layer cloth liquid plate distribution holes on the bottom layer cloth liquid plate is positioned at the center of a parallelogram formed by sequentially connecting the circle centers of the flanging stretching holes of the four adjacent bottom layer cloth liquid plates.
7. A falling film evaporator liquid distributor as set forth in claim 1 wherein: the middle layer cloth liquid plate is supported by a plurality of fixed supporting pieces arranged on the bottom layer cloth liquid plate.
8. A method of manufacturing a liquid distributor for a falling film evaporator according to any one of claims 1-7, wherein:
(a) The top cover plate and the upper liquid distribution plate are fixed in a sealing manner after being positioned and fixed with each other;
(b) The inlet connecting pipe and the assembly in the step (a) are fixedly positioned and then are fixedly connected in a sealing way;
(c) The wedge-shaped fixed supporting piece is fixedly arranged on the bottom layer cloth liquid plate, the big end of the fixed supporting piece is fixedly arranged on the bottom layer cloth liquid plate, and the fixed supporting piece is perpendicular to the surface of the bottom layer cloth liquid plate; the middle layer liquid distribution plate is provided with corresponding through holes, the tip ends of the fixed supporting pieces penetrate through the through holes, so that the middle layer liquid distribution plate is supported, the edges of the middle layer liquid distribution plate are bent and erected into side walls and sleeved in the side walls of the bottom layer liquid distribution plate, the middle layer liquid distribution plate is kept at the same height with the two side walls of the bottom layer liquid distribution plate, and the top ends of the two side walls are fixedly connected in a sealing mode;
(d) Covering the assembly in the step (b) on the assembly in the step (c), mutually fixing, sealing and fixedly connecting, and completing the assembly of the liquid distributor.
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| CN202110141474.8A CN112856861B (en) | 2021-02-02 | 2021-02-02 | Liquid distributor of falling film evaporator and manufacturing method thereof |
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| CN202110141474.8A CN112856861B (en) | 2021-02-02 | 2021-02-02 | Liquid distributor of falling film evaporator and manufacturing method thereof |
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| CN112856861B true CN112856861B (en) | 2023-08-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN203908117U (en) * | 2014-04-24 | 2014-10-29 | 珠海格力电器股份有限公司 | Uniform distribution device and falling-film evaporator, as well as water chilling unit |
| CN108917232A (en) * | 2018-08-03 | 2018-11-30 | 珠海格力电器股份有限公司 | Liquid distributor, heat exchanger and air-conditioner set |
| CN112033050A (en) * | 2020-09-04 | 2020-12-04 | 珠海格力电器股份有限公司 | Liquid distributor and evaporator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727707A (en) * | 2013-12-30 | 2014-04-16 | 麦克维尔空调制冷(武汉)有限公司 | Full-falling-film evaporator with double refrigerant distribution devices |
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2021
- 2021-02-02 CN CN202110141474.8A patent/CN112856861B/en active Active
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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 |
| CN203908117U (en) * | 2014-04-24 | 2014-10-29 | 珠海格力电器股份有限公司 | Uniform distribution device and falling-film evaporator, as well as water chilling unit |
| CN108917232A (en) * | 2018-08-03 | 2018-11-30 | 珠海格力电器股份有限公司 | Liquid distributor, heat exchanger and air-conditioner set |
| CN112033050A (en) * | 2020-09-04 | 2020-12-04 | 珠海格力电器股份有限公司 | Liquid distributor and evaporator |
Non-Patent Citations (1)
| Title |
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| 李明霞 ; 谭来仔 ; 陈传宝 ; 汤煜 ; .水平管式降膜蒸发器布液器的方案比较.制冷与空调.2013,(05),88-92，图3. * |
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