CN215983342U - Refrigerant liquid inlet structure of falling film evaporator - Google Patents
Refrigerant liquid inlet structure of falling film evaporator Download PDFInfo
- Publication number
- CN215983342U CN215983342U CN202122359682.3U CN202122359682U CN215983342U CN 215983342 U CN215983342 U CN 215983342U CN 202122359682 U CN202122359682 U CN 202122359682U CN 215983342 U CN215983342 U CN 215983342U
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- liquid
- refrigerant
- heat exchange
- feed liquor
- exchange tube
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- 239000007788 liquid Substances 0.000 title claims abstract description 120
- 239000003507 refrigerant Substances 0.000 title claims abstract description 65
- 239000011552 falling film Substances 0.000 title claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a refrigerant liquid inlet structure of a falling film evaporator, belonging to the field of evaporators. The refrigerant liquid inlet structure of the falling film evaporator comprises: the shell, the heat exchange tube, the feed liquor pipe, the liquid distributor, the shell is the cylinder structure of horizontal setting, the heat transfer chamber has been seted up along the axis to the shell, the heat transfer pipe is along horizontal installation in the heat transfer chamber, the feed liquor pipe sets up along vertical direction, the feed liquor pipe is installed in the lower extreme of shell and is stretched into in the heat transfer chamber, the top to the heat exchange tube is stretched out to the upper end of feed liquor pipe, the liquid distributor sets up in the top of heat exchange tube and with the feed liquor union coupling, the liquid distributor is provided with the liquid distribution chamber with feed liquor pipe intercommunication, the liquid distributor lower extreme is provided with a plurality of liquid distribution mouths downwards. The refrigerant is carried to the feed liquor pipe through the pressurization, and the gaseous refrigerant that wherein mix with can directly discharge and upward movement through liquid distribution mouth to can not contact with the heat exchange tube, for the mode of carrying the refrigerant from the casing upper end pressurization downwards, avoid the gaseous refrigerant direct impact to the heat exchange tube surface problem of bringing.
Description
Technical Field
The utility model relates to a falling film evaporator, in particular to a refrigerant liquid inlet structure of the falling film evaporator.
Background
Falling film evaporator is a common heat transfer device, the refrigerant gets into on the inside liquid distribution plate of evaporator from the top of evaporator, break up liquid refrigerant through the liquid distribution plate, make liquid refrigerant evenly distributed to the heat exchange tube of liquid distribution plate below on, thereby carry out the heat exchange operation, but liquid refrigerant can mix partial gaseous refrigerant usually entering the evaporator money, when sending into the evaporator with the refrigerant through the pressurized mode, partial gaseous refrigerant can the cladding at the heat exchange tube outer wall, thereby the area of contact of liquid refrigerant and heat exchange tube has been reduced, thereby heat exchange efficiency has been reduced.
SUMMERY OF THE UTILITY MODEL
This application is through providing a refrigerant inlet structure of falling liquid film evaporator to this can cladding problem on the heat exchange tube surface after solving liquid refrigerant entering evaporimeter.
The embodiment of the application provides a refrigerant inlet structure of falling film evaporator, includes:
the shell is provided with a heat exchange cavity;
the heat exchange tube is arranged in the heat exchange cavity;
the liquid inlet pipe is arranged at the lower end of the shell and extends into the heat exchange cavity;
the liquid distributor is arranged above the heat exchange tube and is provided with a liquid distribution cavity communicated with the liquid inlet tube, and the lower end of the liquid distributor is downwards provided with a plurality of liquid distribution nozzles.
On the basis of the technical scheme, the utility model can be further improved as follows:
further: the liquid distributor further comprises: the liquid distribution device comprises a top plate and a bottom plate, wherein the top plate is installed above the bottom plate, a liquid distribution cavity is formed between the top plate and the bottom plate, a liquid distribution nozzle is arranged at the lower end of the bottom plate, a first flow guide surface is arranged on the upper surface of the bottom plate, and the first flow guide surface is used for guiding a refrigerant towards the liquid distribution nozzle for drainage. The beneficial effect of this step: the first flow guide surface guides the refrigerant to move, so that smoothness of liquid cooling flowing out from the liquid distribution nozzle is improved, and the refrigerant is prevented from being deposited on the bottom plate.
Further: the first flow guide surface is an inclined surface or an arc surface. The beneficial effect of this step: the cambered surface or the inclined surface has a good drainage effect.
Further: the upper cavity wall of the liquid distribution cavity is provided with a second flow guide surface, and the second flow guide surface is used for guiding the refrigerant towards two sides of the liquid distributor. The beneficial effect of this step: the refrigerant is guided to move by the second flow guide surface, so that the refrigerant can move towards two sides of the liquid distributor conveniently, and the liquid distribution uniformity of the liquid distributor is improved.
Further: the second flow guide surface is an inclined surface or an arc surface. The beneficial effect of this step: the cambered surface or the inclined surface has a good drainage effect.
Further: the liquid distributor is characterized by further comprising liquid baffle plates, wherein the liquid baffle plates are arranged on two sides of the liquid distributor, a gap is formed between the liquid baffle plates and the inner wall of the heat exchange cavity, and a plurality of exhaust holes are formed in the surface of the liquid baffle plates. The beneficial effect of this step: the liquid baffle plate is used for blocking liquid-drop-shaped liquid refrigerants mixed in the gas refrigerants, so that the probability that the liquid refrigerants enter the compressor is reduced.
Compared with the prior art, the utility model has the beneficial effects that: through the entering direction that changes the refrigerant for gaseous state refrigerant can direct upward movement after getting into the heat transfer chamber, has avoided gaseous state refrigerant to adhere to the problem of heat exchange tube easily, has guaranteed the heat exchange efficiency of evaporimeter.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of the present invention.
Wherein,
1, a shell and a 101 heat exchange cavity;
2, exchanging a heat pipe;
3, a liquid inlet pipe;
4 liquid distributor, 401 liquid distribution cavity, 402 liquid distribution nozzle, 403 top plate, 404 bottom plate, 405 diversion surface one and 406 diversion surface two;
5 liquid baffle, 501 vent hole.
Detailed Description
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; the mechanical connection can be realized by selecting a proper connection mode in the prior art, such as welding, riveting, threaded connection, bonding, pin connection, key connection, elastic deformation connection, buckle connection, interference connection and injection molding; or an electrical connection, transmitting energy or signals by electricity; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As shown in fig. 1, a refrigerant inlet structure of a falling film evaporator includes: the device comprises a shell 1, a heat exchange pipe 2, a liquid inlet pipe 3 and a liquid distributor 4, wherein the shell 1 is a cylindrical structure which is transversely arranged, the shell 1 is provided with a heat exchange cavity 101 along the axis, the heat exchange pipe 2 is transversely arranged in the heat exchange cavity 101, the liquid inlet pipe 3 is arranged along the vertical direction, the liquid inlet pipe 3 is arranged at the lower end of the shell 1 and extends into the heat exchange cavity 101, the upper end of the liquid inlet pipe 3 extends to the upper part of the heat exchange pipe 2, the liquid distributor 4 is arranged above the heat exchange pipe 2 and is connected with the liquid inlet pipe 3, the liquid distributor 4 is provided with a liquid distribution cavity 401 communicated with the liquid inlet pipe 3, the lower end of the liquid distributor 4 is downwards provided with a plurality of liquid distribution nozzles 402, the refrigerant is conveyed into the liquid inlet pipe 3 by pressurization, the gaseous refrigerant that wherein mix with can directly discharge and upward movement through liquid distribution mouth 402 to can not contact with heat exchange tube 2, for the mode of carrying the refrigerant from the shell 1 upper end pressurization downwards, avoid gaseous refrigerant direct impact to the heat exchange tube 2 problem that the surface brought.
As shown in fig. 1, the liquid distributor 4 further includes: the liquid refrigerant distribution device comprises a top plate 403 and a bottom plate 404, wherein the top plate 403 is installed above the bottom plate 404, a liquid distribution cavity 401 is formed between the top plate 403 and the bottom plate 404, the liquid distribution nozzle 402 is arranged at the lower end of the bottom plate 404 and extends downwards, a first flow guide surface 405 is arranged on the upper surface of the bottom plate 404 and is used for guiding the refrigerant towards the liquid distribution nozzle 402, specifically, the first flow guide surface 405 is arranged at the junction of the liquid distribution nozzle 402 and the bottom plate 404, the first flow guide surface 405 is an inclined surface or an arc surface, the first flow guide surfaces 405 between the adjacent liquid distribution nozzles 402 are mutually connected, and the liquid refrigerant can move along the first flow guide surface 405 to enter the corresponding liquid distribution nozzle 402 through the inclination or the bending of the first flow guide surface 405, so that the refrigerant can flow out conveniently, and the refrigerant is prevented from accumulating on the upper surface of the bottom plate 404.
As shown in fig. 1, the upper cavity wall of the liquid distribution cavity 401 has a second flow guide surface 406, the second flow guide surface 406 is used for guiding the refrigerant towards two sides of the liquid distributor 4, specifically, the second flow guide surface 406 is an inclined surface or an arc surface, the shape is formed by bending a top plate 403, a structure with a high middle part and two low sides is formed, and the refrigerant is guided towards two sides of the liquid distributor 4 through the second flow guide surface 406, so that the refrigerant flows towards two sides of the liquid distributor 4, the problem that the refrigerant is easy to accumulate in the middle of the liquid distributor 4 after entering the middle of the liquid distributor 4 is solved, and the uniformity of liquid distribution of the liquid distributor 4 is optimized.
As shown in fig. 1, the refrigerant inlet structure further includes: liquid baffle 5, liquid baffle 5 installs in the both sides of liquid distributor 4, it has the clearance to keep off between liquid baffle 5 and heat transfer chamber 101 inner wall, a plurality of exhaust holes 501 have been seted up on liquid baffle 5 surface, because liquid refrigerant is in the boiling state on heat exchange tube 2 surfaces, some liquid droplet form refrigerants can be smugglied secretly to the gasified refrigerant, make wherein the refrigerant of liquid droplet form adhere to liquid baffle 5 surface through liquid baffle 5, can fall back to heat transfer chamber 101 after the liquid droplet gathers into the big liquid droplet, it is in order to improve the patency that the air current passes through to set up exhaust hole 501.
This kind of falling liquid film evaporator's refrigerant inlet structure is when using, the refrigerant is let in feed liquor pipe 3 after being pressurized, get into liquid distribution chamber 401 through feed liquor pipe 3, gaseous state refrigerant can directly be in the ascending state after discharging through liquid distribution mouth 402 and discharges to the compressor in from the export that shell 1 upper end set up, liquid state refrigerant can fall down to heat exchange tube 2 on, carry out the heat transfer operation, thereby avoided from top to bottom to carry the gaseous state refrigerant that the refrigerant brought to adhere to the problem that brings on heat exchange tube 2 surfaces.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. A refrigerant liquid inlet structure of a falling film evaporator is characterized by comprising:
the shell is provided with a heat exchange cavity;
the heat exchange tube is arranged in the heat exchange cavity;
the liquid inlet pipe is arranged at the lower end of the shell and extends into the heat exchange cavity;
the liquid distributor is arranged above the heat exchange tube and is provided with a liquid distribution cavity communicated with the liquid inlet tube, and the lower end of the liquid distributor is downwards provided with a plurality of liquid distribution nozzles.
2. The refrigerant inlet structure of claim 1, wherein the liquid distributor further comprises: the liquid distribution device comprises a top plate and a bottom plate, wherein the top plate is installed above the bottom plate, a liquid distribution cavity is formed between the top plate and the bottom plate, a liquid distribution nozzle is arranged at the lower end of the bottom plate, a first flow guide surface is arranged on the upper surface of the bottom plate, and the first flow guide surface is used for guiding a refrigerant towards the liquid distribution nozzle for drainage.
3. The refrigerant inlet structure of claim 2, wherein the first flow guiding surface is an inclined surface or an arc surface.
4. The refrigerant inlet structure according to claim 2, wherein the upper cavity wall of the liquid distribution cavity has a second flow guide surface for guiding the refrigerant toward two sides of the liquid distributor.
5. The refrigerant inlet structure of claim 2, wherein the second guiding surface is an inclined surface or an arc surface.
6. The refrigerant liquid inlet structure according to claim 1, further comprising liquid blocking plates, wherein the liquid blocking plates are installed on two sides of the liquid distributor, a gap is formed between the liquid blocking plates and the inner wall of the heat exchange cavity, and a plurality of vent holes are formed in the surfaces of the liquid blocking plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122359682.3U CN215983342U (en) | 2021-09-27 | 2021-09-27 | Refrigerant liquid inlet structure of falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122359682.3U CN215983342U (en) | 2021-09-27 | 2021-09-27 | Refrigerant liquid inlet structure of falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215983342U true CN215983342U (en) | 2022-03-08 |
Family
ID=80571477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122359682.3U Active CN215983342U (en) | 2021-09-27 | 2021-09-27 | Refrigerant liquid inlet structure of falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215983342U (en) |
-
2021
- 2021-09-27 CN CN202122359682.3U patent/CN215983342U/en active Active
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