CN214148438U - Falling film evaporator and heat pump unit comprising same - Google Patents
Falling film evaporator and heat pump unit comprising same Download PDFInfo
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- CN214148438U CN214148438U CN202023211705.8U CN202023211705U CN214148438U CN 214148438 U CN214148438 U CN 214148438U CN 202023211705 U CN202023211705 U CN 202023211705U CN 214148438 U CN214148438 U CN 214148438U
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- film evaporator
- falling film
- evaporation
- side plate
- evaporation tube
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Abstract
The utility model provides a falling film evaporator and heat pump set who contains this evaporimeter belongs to the air conditioner heat pump field, and wherein falling film evaporator includes: the device comprises a shell, an evaporating pipe group, an evaporating pipe cover and a spraying pipeline. The shell is provided with a liquid refrigerant inlet and a gaseous refrigerant outlet. The evaporating pipe group is arranged in the shell. The evaporation tube cover is arranged in the shell and covers the outside of the evaporation tube group. The spray pipeline is arranged in the evaporation pipe cover at the upper part of the evaporation pipe group and is communicated with the liquid refrigerant inlet. The gaseous refrigerant outlet is arranged at the upper part of the shell, an opening is formed in one side, which is far away from the spraying pipeline, of the evaporation pipe cover, and the inside of the evaporation pipe cover is communicated with the gaseous refrigerant outlet through the opening. The falling film evaporator can effectively reduce the content of liquid refrigerant in gaseous refrigerant.
Description
Technical Field
The utility model relates to an air conditioner heat pump field, concretely relates to falling liquid film evaporator and heat pump set who contains this evaporimeter.
Background
In a heat pump system, a high-temperature high-pressure refrigerant is throttled into a low-temperature low-pressure gas-liquid mixed refrigerant after passing through a throttling device, the gas-liquid mixed refrigerant enters a falling film evaporator, the refrigerant is sprayed to the outer surface of an evaporation tube in a micro-fog manner through a liquid distribution device in the evaporator, the film-shaped refrigerant on the outer surface of the evaporation tube absorbs the heat of water in the evaporation tube, the refrigerant undergoes phase change on the outer surface of the evaporation tube and is changed into a gaseous refrigerant which is directly discharged upwards from a gas outlet arranged at the upper part of the falling film evaporator, and the liquid refrigerant is usually taken out to the evaporator in the gaseous refrigerant by the structural design and further enters a compressor. Thereby affecting the normal operation of the whole heat pump unit. Therefore, it is necessary to provide a novel falling film evaporator and a heat pump unit comprising the same to reduce the liquid refrigerant entrainment of the gaseous refrigerant.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcoming of prior art, the utility model provides a falling film evaporator and heat pump set who contains this evaporimeter for improve the more problem of current falling film evaporator gaseous state refrigerant carrying liquid refrigerant.
To achieve the above and other related objects, the present invention provides a falling film evaporator, comprising:
a housing having a liquid refrigerant inlet and a gaseous refrigerant outlet disposed thereon;
the evaporation tube group is arranged in the shell;
the evaporation tube cover is arranged in the shell and covers the outside of the evaporation tube group;
the spraying pipeline is arranged in the evaporation pipe cover at the upper part of the evaporation pipe group and is communicated with the liquid refrigerant inlet;
the gaseous refrigerant outlet is arranged at the upper part of the shell, an opening is formed in one side, which is far away from the spraying pipeline, of the evaporation pipe cover, and the inside of the evaporation pipe cover is communicated with the gaseous refrigerant outlet through the opening.
In an example of the present invention, the shower pipe extends in an extending direction of the evaporating pipe group.
The utility model discloses an in the example, be provided with a plurality of baffles in the shower, the baffle will inside a plurality of cavities of separating into of shower, each all be provided with inlet and hydrojet mouth in the cavity, the hydrojet mouth sets up shower's lower part.
In an example of the present invention, the liquid spraying port is a plurality of small holes disposed on one side of the evaporating pipe group facing the spraying pipe.
In an example of the present invention, the plurality of small holes are uniformly arranged along the extending direction of the evaporating pipe group.
In an example of the present invention, the evaporation tube cover includes a first side plate, a second side plate, and a top plate; the first side plate is arranged on one side of the evaporation tube group, the second side plate is arranged on the other side of the evaporation tube group, the top plate is arranged on the upper part of the evaporation tube group, and two sides of the top plate are respectively connected with the first side plate and the second side plate; the first side plate and the second side plate form a channel for allowing the evaporation tube group to pass through.
In an example of the present invention, the opening is provided in a plurality of numbers, and is respectively disposed on one side of the first side plate and/or the second side plate away from the top plate.
In an example of the present invention, the plurality of openings are uniformly distributed along an extending direction of the evaporating pipe group.
In an example of the present invention, the opening is rectangular, and the long side of the rectangle extends in a direction of the extension of the evaporating pipe group.
In an example of the present invention, an oil return opening is formed in a lower portion of the housing.
The utility model discloses an in the example, still provide a heat pump set, install above-mentioned arbitrary one in the heat pump set falling liquid film evaporator.
The utility model discloses in the falling film evaporator, be provided with the evaporating pipe cover, the opening on the evaporating pipe cover is seted up and is being deviated from one side of spray line becomes the gaseous state refrigerant from the liquid refrigerant of spun in the spray line under the evaporation of evaporating pipe layer upon layer, and follows the opening flows out the evaporating pipe cover outside in the casing, lighter gaseous state refrigerant upwards follows this moment gaseous state refrigerant export is discharged, and heavier liquid refrigerant then can not follow gaseous state refrigerant export and discharges, but stays further evaporation in the casing. Therefore, the falling film evaporator of the utility model can effectively reduce the content of the liquid refrigerant in the gaseous refrigerant.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of an embodiment of a falling film evaporator of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line C-C of FIG. 1;
fig. 4 is a schematic structural diagram of an evaporation tube cover in an embodiment of the falling film evaporator of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a left side view of FIG. 4;
fig. 7 is a schematic cross-sectional view of a shower tube in an embodiment of the falling film evaporator of the present invention;
fig. 8 is a schematic view of the spraying direction of the spraying pipe in fig. 7.
100. A housing; 101. A liquid refrigerant inlet;
102. a gaseous refrigerant outlet; 103. A water outlet;
104. a water inlet; 105. An oil return port;
200. an evaporating pipe group; 300. An evaporation tube cover;
310. a first side plate; 311. A first opening;
320. a second side plate; 321. A second opening;
330. a top plate; 340. A channel;
400. a spray pipe; 410. A liquid spraying port;
401. a partition plate; 402. A chamber;
403. a liquid inlet; 500. A support;
600. is communicated with the pipeline.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the present invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any number between the endpoints are optional unless the utility model discloses otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are intended to describe the same, and all methods, apparatus and materials similar or equivalent to those described herein may be used in the practice of this invention.
Referring to fig. 1 to 8, the present invention provides a falling film evaporator and a heat pump unit including the same, which are used to improve the problem that the gaseous refrigerant of the falling film evaporator carries more liquid refrigerant, and effectively reduce the content of the liquid refrigerant in the gaseous refrigerant.
Referring to fig. 1 to 3, fig. 1 is a front view of an embodiment of a falling film evaporator of the present invention. Fig. 2 is a left side view of fig. 1. Fig. 3 is a sectional view taken along line C-C in fig. 1. The falling film evaporator comprises: the shell 100, the evaporating tube group 200, the evaporating tube cover 300 and the shower pipe 400. The housing 100 is mounted on the bracket 500, and the housing 100 is provided with a liquid refrigerant inlet 101 and a gaseous refrigerant outlet 102. The evaporating tube sets 200 are stacked and arranged in the casing 100, and the water inlets 104 and the water outlets 103 of the evaporating tube sets 200 extend out of the casing 100. The evaporation tube cover 300 is disposed in the casing 100 and covers the outside of the evaporation tube group 200. The spray pipe 400 is disposed in the evaporation pipe cover 300 at the upper portion of the evaporation pipe group 200, and is communicated with the liquid refrigerant inlet 101. The gaseous refrigerant outlet 102 is disposed at the upper portion of the housing 100, and an opening is disposed on a side of the evaporation tube cover 300 facing away from the spray pipe 400, and communicates the inside of the evaporation tube cover 300 with the gaseous refrigerant outlet 102.
Referring to fig. 3, in an example of the present invention, the axis of the spraying pipe 400 is parallel to the axis of the casing 100, the axis of the evaporation pipe is also parallel to the axis of the casing 100, and the spraying pipe 400 extends along the extending direction of the evaporation pipe set 200. This allows the shower pipe 400 to cover a longer section of the evaporation pipe, which can improve the evaporation efficiency.
Referring to fig. 4, fig. 4 is a schematic structural diagram of an evaporation tube cover 300 in an embodiment of a falling film evaporator of the present invention. In an example of the present invention, a plurality of partition boards 401 are disposed in the spray pipe 400, the partition boards 401 will separate the interior of the spray pipe 400 into a plurality of chambers 402, each of which is disposed with a liquid inlet 403 and a liquid outlet 410, the liquid outlet 410 is disposed at the lower portion of the spray pipe 400.
Referring to fig. 7, fig. 7 is a schematic cross-sectional view of a shower tube in an embodiment of the falling film evaporator of the present invention. In an example of the present invention, the liquid spraying port 410 is disposed at the position where the spraying pipe 400 faces the plurality of small holes at one side of the evaporating pipe set 200, and the plurality of small holes are uniformly distributed along the extending direction of the evaporating pipe set 200. With continuing reference to fig. 8, fig. 8 is a schematic diagram of the spraying direction of the spraying pipe in fig. 7, and the plurality of small holes are located within an angle range of ± 45 ° on both sides of the vertical bisector of the spraying pipe, which can cover more evaporation pipes and prevent the liquid refrigerant from directly spraying on the evaporation pipe cover 300 and flowing down directly.
Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of an evaporation tube cover 300 in an embodiment of a falling film evaporator of the present invention. Fig. 5 is a top view of fig. 4. Fig. 6 is a left side view of fig. 4. In an example of the present invention, the evaporator tube cover 300 includes a first side plate 310, a second side plate 320 and a top plate 330. The first side plate 310 is disposed on one side of the evaporation tube assembly 200, the second side plate 320 is disposed on the other side of the evaporation tube assembly 200, the top plate 330 is disposed on the upper portion of the evaporation tube assembly 200, and two sides of the top plate are respectively connected to the first side plate 310 and the second side plate 320. The first side plate 310 and the second side plate 320 form a channel 340 therebetween for allowing the evaporation tube set 200 to pass through. The present invention provides a connection form of the first side plate 310, the second side plate 320 and the third side plate is not limited, in an example of the present invention, the first side plate 310, the second side plate 320 and the third side plate are formed by bending the same plate.
Referring to fig. 4, in the present invention, the opening of the evaporation tube cover 300 can be disposed only under the first side plate 310 or the second side plate 320, or disposed under the first side plate 310 and the second side plate 320 at the same time, so as to be disposed under the first side plate 310 and the second side plate 320 at the same time, in an example of the present invention, the first side plate 310 is provided with a plurality of first openings 311, the second side plate 320 is provided with a plurality of second openings 321, and the first openings 311 and the second openings 321 are disposed on the side of the first side plate 310 and the side of the second side plate 320 departing from the top plate 330, so as to reduce the wind speed at the opening and prevent the liquid entrainment of the gas.
Referring to fig. 4, the shape of the opening of the evaporating tube cover 300 is not limited, and can be any suitable shape, such as circular, square, or oval, in an example of the present invention, the opening is a plurality of rectangular openings, and the plurality of rectangular openings are uniformly distributed along the extending direction of the evaporating tube set 200. The long sides of the rectangle extend along the extending square of the evaporating tube set 200.
In an example of the present invention, the lower portion of the housing 100 is opened with an oil return opening 105. Considering that the gaseous refrigerant is discharged upwards from the gaseous refrigerant outlet 102 at the top of the shell 100 after passing through the opening on the evaporation tube cover 300, and the flow rate of the gaseous refrigerant is low when the path is opened, the non-evaporated refrigerant and the refrigeration oil flowing into the falling film evaporator along with the refrigerant fall to the bottom of the evaporator, the non-evaporated refrigerant absorbs the heat of the water at the inner side of the bottom evaporation for secondary evaporation, and the refrigeration oil is collected to the bottom of the falling film evaporator under the action of gravity and is ejected back to the suction port of the compressor by the high-pressure gas through the oil return port 105.
The utility model discloses still provide a heat pump set in the example, install above-mentioned arbitrary one in the heat pump set falling liquid film evaporator. The heat pump unit has the advantages that the evaporation of the refrigerant is sufficient, and the liquid content of the gaseous refrigerant is low.
As described above, the utility model discloses be provided with the evaporating pipe cover in the falling film evaporator, the opening on the evaporating pipe cover is seted up and is kept away from one side of shower pipeline, from the shower pipeline spun liquid refrigerant under the evaporation of evaporating pipe layer upon layer, become gaseous state refrigerant, and follow the opening flows out the evaporating pipe cover outside in the casing, lighter gaseous state refrigerant upwards follows this moment gaseous state refrigerant export is discharged, and heavier liquid refrigerant then can not follow gaseous state refrigerant export and discharges, but stays further evaporation in the casing. Therefore, the falling film evaporator of the utility model can effectively reduce the content of the liquid refrigerant in the gaseous refrigerant. Therefore, the utility model discloses thereby effectively overcome some practical problems among the prior art and had very high use value and use meaning.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be modified in many ways without departing from the spirit and scope of the present invention, and those skilled in the art can modify or change the embodiments described above without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A falling film evaporator, comprising:
a housing having a liquid refrigerant inlet and a gaseous refrigerant outlet disposed thereon;
the evaporation tube group is arranged in the shell;
the evaporation tube cover is arranged in the shell and covers the outside of the evaporation tube group;
the spraying pipeline is arranged in the evaporation pipe cover at the upper part of the evaporation pipe group and is communicated with the liquid refrigerant inlet;
the gaseous refrigerant outlet is arranged at the upper part of the shell, an opening is formed in one side, which is far away from the spraying pipeline, of the evaporation pipe cover, and the inside of the evaporation pipe cover is communicated with the gaseous refrigerant outlet through the opening.
2. The falling film evaporator according to claim 1, wherein the shower tubes extend in the direction of extension of the bank of evaporation tubes.
3. The falling film evaporator according to claim 1, wherein a plurality of partition plates are provided in said spray pipes, said partition plates dividing the interior of said spray pipes into a plurality of chambers, each of said chambers having a liquid inlet and a liquid outlet provided therein, said liquid outlets being provided in the lower portion of said spray pipes.
4. The falling film evaporator according to claim 3, wherein said liquid spray ports are a plurality of small holes disposed on a side of said spray pipes facing said group of evaporation pipes.
5. The falling film evaporator according to claim 4, wherein said plurality of small holes are uniformly arranged along the extension direction of said evaporating tube group.
6. The falling film evaporator of claim 1, wherein the evaporation tube hood comprises a first side plate, a second side plate, and a top plate; the first side plate is arranged on one side of the evaporation tube group, the second side plate is arranged on the other side of the evaporation tube group, the top plate is arranged on the upper part of the evaporation tube group, and two sides of the top plate are respectively connected with the first side plate and the second side plate; the first side plate and the second side plate form a channel for allowing the evaporation tube group to pass through.
7. The falling film evaporator according to claim 6, wherein the openings are provided in a plurality and are respectively provided on a side of the first side plate and/or the second side plate facing away from the top plate.
8. The falling film evaporator according to claim 6, wherein a plurality of said openings are uniformly distributed along the extension direction of said group of evaporating tubes.
9. The falling film evaporator according to claim 1, wherein the lower portion of the shell is provided with an oil return port.
10. A heat pump unit, characterized in that a falling film evaporator according to any one of claims 1 to 9 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023211705.8U CN214148438U (en) | 2020-12-28 | 2020-12-28 | Falling film evaporator and heat pump unit comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023211705.8U CN214148438U (en) | 2020-12-28 | 2020-12-28 | Falling film evaporator and heat pump unit comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214148438U true CN214148438U (en) | 2021-09-07 |
Family
ID=77542169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023211705.8U Active CN214148438U (en) | 2020-12-28 | 2020-12-28 | Falling film evaporator and heat pump unit comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214148438U (en) |
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2020
- 2020-12-28 CN CN202023211705.8U patent/CN214148438U/en active Active
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