CN112944747B - Liquid distributor, falling film type heat exchanger and air conditioner - Google Patents
Liquid distributor, falling film type heat exchanger and air conditioner Download PDFInfo
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- CN112944747B CN112944747B CN201911259605.1A CN201911259605A CN112944747B CN 112944747 B CN112944747 B CN 112944747B CN 201911259605 A CN201911259605 A CN 201911259605A CN 112944747 B CN112944747 B CN 112944747B
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- liquid
- overflow
- aperture
- side wall
- homogenizing plate
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- 239000007788 liquid Substances 0.000 title claims abstract description 126
- 239000011552 falling film Substances 0.000 title claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 71
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 abstract description 14
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
The invention provides a liquid distributor, a falling film heat exchanger and an air conditioner, wherein the liquid distributor comprises: a liquid homogenizing plate; at least one first overflow hole is arranged on the side wall of the liquid homogenizing plate and is positioned at the top of the side wall of the liquid homogenizing plate along the gravity direction, and when the liquid level of the gas-liquid mixed refrigerant in the liquid homogenizing plate exceeds the height of the lower edge of the first overflow hole, the gaseous refrigerant on the upper layer overflows through the first overflow hole, so that the separation of the gaseous refrigerant on the upper layer and the liquid refrigerant on the lower layer is realized. According to the liquid distributor, the overflow holes are formed in the liquid-homogenizing plate and the sealing plate, the gaseous refrigerant flows out through the overflow holes, and the liquid refrigerant flows out through the liquid-homogenizing holes in the bottoms of the liquid-homogenizing plate and the sealing plate, so that the effect of gas-liquid separation of the mixed refrigerant in the liquid distributor is achieved, the mixed refrigerant is rapidly and uniformly diffused with the liquid refrigerant, the liquid distribution effect is achieved, the liquid carrying phenomenon during the discharge of the gaseous refrigerant of the falling film type heat exchanger is solved, and the performance of the falling film type evaporator is improved.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a liquid distributor, a falling film type heat exchanger and an air conditioner.
Background
The liquid distributor of the falling film heat exchanger has great influence on the liquid homogenizing effect of the liquid refrigerant entering the evaporator, and further the distribution and heat exchanging effect of the refrigerant on the heat exchanging pipe can be influenced. In the falling film heat exchanger, the gas-liquid separation effect in the liquid distributor is poor because the gas-liquid separation effect is poor when the gaseous refrigerant enters the compressor.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the liquid distributor has poor gas-liquid separation effect, so that gas refrigerant is sucked and carried with liquid when entering the compressor, and the liquid distributor, the falling film heat exchanger and the air conditioner are provided.
In order to solve the above problems, the present invention provides a liquid distributor, comprising:
A liquid homogenizing plate;
The liquid level of the gas-liquid mixed refrigerant in the liquid homogenizing plate exceeds the height of the lower edge of the first overflow hole, and the gaseous refrigerant on the upper layer overflows through the first overflow hole to realize the separation of the gaseous refrigerant on the upper layer and the liquid refrigerant on the lower layer.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
Preferably, the side wall of the liquid-homogenizing plate comprises a long side wall of the liquid-homogenizing plate and a wide side wall of the liquid-homogenizing plate, and at least one first overflow hole is formed in at least one of the long side wall of the liquid-homogenizing plate and the wide side wall of the liquid-homogenizing plate.
Preferably, the liquid distributor further comprises a feeding channel, the flow area of the feeding channel is S1, and the sum of the flow areas of the first overflow holes is S2, so that S2/s1=4-5 is satisfied.
Preferably, the area of the first overflow aperture near the feed channel is smaller than the area of the first overflow aperture remote from the feed channel.
Preferably, the liquid distributor further comprises:
A sealing plate;
The at least one second overflow hole is arranged on the side wall of the sealing plate and positioned at the top of the side wall of the sealing plate along the gravity direction, and when the liquid level of the gas-liquid mixed refrigerant in the sealing plate exceeds the height of the lower edge of the first overflow hole, the first overflow hole is used for overflowing the upper-layer gaseous refrigerant, so that the separation of the upper-layer gaseous refrigerant and the bottom-layer gaseous refrigerant is realized.
Preferably, the side walls of the closure plate include closure plate long side walls, and the at least one second overflow aperture is provided in the closure plate long side walls.
Preferably, the at least one first overflow aperture and the at least one second overflow aperture are arranged in a staggered manner.
Preferably, the number of the first overflow holes is at least two, the at least two first overflow holes are arranged at intervals, and/or the number of the second overflow holes is at least two, and the at least two second overflow holes are arranged at intervals.
Preferably, the first overflow hole is at least one of a rectangular hole, a triangular hole, a circular hole, a semicircular hole and a trapezoid hole, the long side of the rectangular hole coincides with the gravity direction, and/or the second overflow hole is at least one of a rectangular hole, a triangular hole, a circular hole and a trapezoid hole, and the long side of the rectangular hole coincides with the gravity direction.
Preferably, when the first overflow hole and/or the second overflow hole are circular holes, the distance from the upper edge of the circular holes to the top end of the side wall is 10mm or more.
Preferably, when the first overflow aperture and/or the second overflow aperture is a triangular aperture, either side of the triangular aperture is flush with the top end of the side wall.
A falling film heat exchanger adopts any one of the liquid distributors.
Air conditioner adopting any one of liquid distributor
The liquid distributor, the falling film heat exchanger and the air conditioner provided by the invention have at least the following beneficial effects:
According to the liquid distributor, the overflow holes are formed in the side walls of the liquid homogenizing plate and the sealing plate, the gaseous refrigerant flows out through the overflow holes, and the liquid refrigerant flows out through the liquid homogenizing holes in the bottoms of the liquid homogenizing plate and the sealing plate, so that the effect of gas-liquid separation of mixed refrigerants in the liquid distributor is achieved, meanwhile, the liquid refrigerants are rapidly and uniformly diffused by virtue of the flowing effect of the gaseous refrigerants, so that the whole liquid distributor is fully distributed with the refrigerants, the effect of more liquid distribution is achieved, the phenomenon of liquid carrying during the discharge of the gaseous refrigerants of a falling film type heat exchanger is solved, and the performance of the falling film type evaporator is improved.
Drawings
FIG. 1 is a schematic view of a liquid distributor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a liquid-homogenizing plate according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a sealing plate according to an embodiment of the present invention.
The reference numerals are expressed as:
1. A liquid homogenizing plate; 2. a first overflow aperture; 3. the side wall of the long side of the liquid homogenizing plate; 4. wide side wall of liquid homogenizing plate; 5. a feed channel; 6. a sealing plate; 7. a second overflow aperture; 8. the side wall of the long side of the sealing plate; 9. a broad side wall of the sealing plate; 10. and the flow equalizing holes are formed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a liquid dispenser, including: a liquid homogenizing plate 1; at least one first overflow hole 2, at least one first overflow hole 2 sets up on the lateral wall of liquid-homogenizing plate 1 to be located the top along the gravity direction of the lateral wall of liquid-homogenizing plate 1, when the liquid level height of the mixed refrigerant of gas-liquid in liquid-homogenizing plate 1 surpassed the lower limb height of first overflow hole 2, the gaseous refrigerant of upper strata overflowed through first overflow hole 2, realizes the separation of upper gaseous refrigerant and lower floor's liquid refrigerant.
According to the liquid distributor, the overflow holes are formed in the side wall of the liquid homogenizing plate 1, the gaseous refrigerant flows out through the overflow holes, and the liquid refrigerant flows out through the liquid homogenizing holes in the bottom of the liquid homogenizing plate 1, so that the effect of gas-liquid separation of mixed refrigerants in the liquid homogenizing plate 1 is achieved, meanwhile, the liquid refrigerant is rapidly and uniformly diffused by virtue of the flowing effect of the gaseous refrigerant, so that the refrigerant is distributed over the whole liquid distributor, the liquid distributing effect is achieved, the liquid carrying phenomenon during the discharge of the gaseous refrigerant of the falling film type heat exchanger is solved, and the performance of the falling film type evaporator is improved.
In this embodiment, the side wall of the liquid-homogenizing plate 1 includes a liquid-homogenizing plate long side wall 3 and a liquid-homogenizing plate wide side wall 4, and at least one first overflow hole 2 is formed in at least one of the liquid-homogenizing plate long side wall 3 and the liquid-homogenizing plate wide side wall 4 of the liquid-homogenizing plate 1. The overflow holes are arranged at the top of the long side and are mainly used for gas-liquid separation, and the overflow holes of the wide side can not only ensure that the gaseous refrigerant overflows fully, but also push the liquid refrigerant to be uniformly distributed on the liquid homogenizing plate 1 along the length direction under the action of the overflow of the gaseous refrigerant.
In this embodiment, the liquid distributor further includes a feed channel 5, the flow area of the feed channel 5 is S1, the sum of the flow areas of the first overflow holes 2 is S2, so that S2/s1=4-5 is satisfied, the flow areas of the feed channel 5 and the first overflow holes 2 reach the above ratio, and the optimal gas-liquid separation effect can be achieved.
In this embodiment, the first overflow holes 2 may be multiple and uniformly arranged along the length direction of the liquid-homogenizing plate 1, where the area of the first overflow holes 2 close to the feeding channel is smaller than that of the first overflow holes 2 far away from the feeding channel 5, so as to reduce the liquid drops from the feeding channel 5 as much as possible from splashing out through the first overflow holes 2.
Preferably, the liquid distributor further comprises: a closing plate 6; the at least one second overflow hole 7, the at least one second overflow hole 7 is set up on the lateral wall of shrouding 6 to be located the top of shrouding 6 lateral wall along gravity direction, when the liquid level of the gas-liquid mixture refrigerant in shrouding 6 surpasses the lower limb height of first overflow hole 2, first overflow hole 2 is used for spilling out the gaseous refrigerant of upper strata, realizes the separation of upper strata gaseous refrigerant and bottom gaseous refrigerant. In the liquid distributor, the liquid homogenizing plate 1 and the sealing plate 6 are sleeved and installed, the liquid homogenizing plate 1 is completely wrapped by the sealing plate 6, liquid refrigerant which flows out uniformly of the liquid homogenizing plate 1 and gaseous refrigerant which overflows all flow into the sealing plate 6 first, and then, the liquid refrigerant flows out through flow equalizing holes at the bottom of the sealing plate 6, so that liquid distributing operation is completed. The gaseous refrigerant continuously flows out through the second overflow holes 7 on the side wall of the sealing plate 6 to finish the second gas-liquid separation, and the gaseous content in the liquid refrigerant flowing out of the liquid distributor is further reduced.
Preferably, the side walls of the closure plate 6 comprise closure plate long side walls 8, and at least one second overflow aperture 7 is provided in the closure plate long side walls 8 of the closure plate 6. In the partial liquid distributor, the wide edge of the sealing plate 6 does not participate in gas-liquid separation, but based on the design thought of the application, the side wall 9 of the wide edge of the sealing plate can be provided with a second overflow hole 7 for gas-liquid separation.
Preferably, the at least one first overflow aperture 2 and the at least one second overflow aperture 7 are arranged staggered with respect to each other. The gaseous refrigerant overflowed from the liquid-homogenizing plate 1 into the sealing plate 6 overflows from the second overflow holes 7; the dislocation of the two groups of overflow holes can effectively prevent liquid refrigerant from overflowing along with gaseous refrigerant, and keep the liquid refrigerant in the sealing plate 6, and the liquid refrigerant flows onto the heat exchange tube through the flow equalizing round holes formed in the bottom of the sealing plate 6.
The second overflow holes 7 on the sealing plate 6 are identical to the first overflow holes 2 on the liquid-homogenizing plate 1 in size. The uniform size is to make the gas overflow uniform, if the openings on the sealing plate 6 are small, the flow velocity will be increased, vibration will be generated, and if the openings are large, the liquid carrying phenomenon will be caused.
Preferably, the number of the first overflow holes 2 is at least two, the at least two first overflow holes 2 are arranged at intervals, and/or the number of the second overflow holes 7 is at least two, the at least two second overflow holes 7 are arranged at intervals. Part of the gaseous refrigerant entering the liquid distributor overflows through the first overflow holes 2 and the second overflow holes 7 in sequence, and the intermittent holes can block part of the carried liquid refrigerant.
Preferably, the first overflow hole 2 is at least one of a rectangular hole, a triangular hole, a circular hole, a semicircular hole and a trapezoidal hole, and the long side of the rectangular hole coincides with the direction of gravity, and/or the second overflow hole 7 is at least one of a rectangular hole, a triangular hole, a circular hole and a trapezoidal hole, and the long side of the rectangular hole coincides with the direction of gravity.
Preferably, for processing reasons, the first overflow aperture 2, and/or the second overflow aperture 7, is a circular aperture, the upper edge of which is at a distance of 10mm or more from the top end of the side wall. When the first overflow aperture 2 and/or the second overflow aperture 7 is a triangular aperture, either side of the triangular aperture is flush with the top end of the side wall.
The liquid-homogenizing plate 1 of the liquid distributor is arranged in the sealing plate 6, a refrigerant enters the liquid distributor from the feeding channel 5, the liquid refrigerant is distributed on the liquid-homogenizing plate 1, flows onto the sealing plate 6 through the flow-homogenizing holes 10 at the bottom of the liquid-homogenizing plate 1, and uniformly flows onto the surface of the heat exchange tube for evaporation heat exchange through the flow-homogenizing holes 10 at the bottom of the sealing plate 6; the gaseous refrigerant overflows to the sealing plate 6 through the openings on the side edge of the liquid-homogenizing plate 1, and overflows from the second overflow holes 7 which are formed in the sealing plate 6 and are staggered with the openings of the liquid-homogenizing plate 1, so that the problem of liquid carrying of the gaseous refrigerant output by the falling film heat exchanger is solved.
A falling film heat exchanger adopts any one of the liquid distributors.
An air conditioner adopts any one of the liquid distributors.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. A liquid distributor, comprising:
a liquid-homogenizing plate (1);
The liquid homogenizing plate comprises at least one first overflow hole (2), wherein the at least one first overflow hole (2) is arranged on the side wall of the liquid homogenizing plate (1) and is positioned at the top of the side wall of the liquid homogenizing plate (1) along the gravity direction, and when the liquid level of the gas-liquid mixed refrigerant in the liquid homogenizing plate (1) exceeds the height of the lower edge of the first overflow hole (2), the gaseous refrigerant at the upper layer overflows through the first overflow hole (2) to realize the separation of the gaseous refrigerant at the upper layer and the liquid refrigerant at the lower layer; the side walls of the liquid-homogenizing plate (1) comprise a long side wall (3) of the liquid-homogenizing plate and a wide side wall (4) of the liquid-homogenizing plate, and the at least one first overflow hole (2) is formed in at least one of the long side wall (3) of the liquid-homogenizing plate and the wide side wall (4) of the liquid-homogenizing plate (1);
The flow area of the feeding channel (5) is S1, the sum of the flow areas of the first overflow holes (2) is S2, and the conditions that S2/S1=4-5 are met;
A closing plate (6);
The at least one second overflow hole (7), the at least one second overflow hole (7) is arranged on the side wall of the sealing plate (6), and is positioned at the top of the side wall of the sealing plate (6) along the gravity direction, when the liquid level of the gas-liquid mixed refrigerant in the sealing plate (6) exceeds the height of the lower edge of the first overflow hole (2), the first overflow hole (2) is used for overflowing the upper-layer gaseous refrigerant, and the separation of the upper-layer gaseous refrigerant and the bottom-layer gaseous refrigerant is realized.
2. The liquid distributor according to claim 1, characterized in that the area of the first overflow aperture (2) close to the feed channel (5) is smaller than the first overflow aperture (2) distant from the feed channel (5).
3. The liquid distributor according to claim 1, wherein the side walls of the sealing plate (6) comprise sealing plate long side walls (8), and the at least one second overflow aperture (7) is arranged in the sealing plate long side walls (8) of the sealing plate (6).
4. The liquid distributor according to claim 1, characterized in that the at least one first overflow aperture (2) and the at least one second overflow aperture (7) are arranged staggered with respect to each other.
5. The liquid distributor according to claim 1, wherein the number of the first overflow holes (2) is at least two, the at least two first overflow holes (2) are arranged at intervals, and/or the number of the second overflow holes (7) is at least two, and the at least two second overflow holes (7) are arranged at intervals.
6. The liquid distributor according to any one of claims 3-5, wherein the first overflow aperture (2) is at least one of a rectangular aperture, a triangular aperture, a circular aperture, a semicircular aperture, a trapezoidal aperture, the long side of the rectangular aperture being coincident with the direction of gravity, and/or the second overflow aperture (7) is at least one of a rectangular aperture, a triangular aperture, a circular aperture, a trapezoidal aperture, the long side of the rectangular aperture being coincident with the direction of gravity.
7. The liquid distributor according to claim 6, wherein when the first overflow hole (2) and/or the second overflow hole (7) are circular holes, the distance from the upper edge of the circular holes to the top end of the side wall is 10mm or more.
8. The liquid distributor according to claim 6, characterized in that, when the first overflow aperture (2) and/or the second overflow aperture (7) are triangular apertures, either side of the triangular apertures is flush with the top end of the side wall.
9. A falling film heat exchanger employing the liquid distributor of any one of claims 1-7.
10. An air conditioner characterized in that the liquid distributor according to any one of claims 1 to 7 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259605.1A CN112944747B (en) | 2019-12-10 | Liquid distributor, falling film type heat exchanger and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911259605.1A CN112944747B (en) | 2019-12-10 | Liquid distributor, falling film type heat exchanger and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112944747A CN112944747A (en) | 2021-06-11 |
| CN112944747B true CN112944747B (en) | 2024-07-02 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211400395U (en) * | 2019-12-10 | 2020-09-01 | 珠海格力电器股份有限公司 | Liquid distributor, falling film type heat exchanger and air conditioner |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211400395U (en) * | 2019-12-10 | 2020-09-01 | 珠海格力电器股份有限公司 | Liquid distributor, falling film type heat exchanger and air conditioner |
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