CN212778813U - Fin assembly, heat exchanger and air conditioner - Google Patents
Fin assembly, heat exchanger and air conditioner Download PDFInfo
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- CN212778813U CN212778813U CN202021693540.XU CN202021693540U CN212778813U CN 212778813 U CN212778813 U CN 212778813U CN 202021693540 U CN202021693540 U CN 202021693540U CN 212778813 U CN212778813 U CN 212778813U
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- 230000000694 effects Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
The application provides a fin assembly, a heat exchanger and an air conditioner. The fin assembly comprises a fin base surface, wherein a slotted bridge piece is arranged on the fin base surface; the slotted bridge piece comprises: a top sheet and two support members, the top sheet being disposed obliquely with respect to the fin base surface; the top sheet is spanned over the fin base surface via two of the support sections. Through set up the bridge piece that cracks that the slope set up on the fin base face, make the flow in-process of air on the fin base face change flow direction, the velocity of flow also can increase gradually, can with the heat exchange tube abundant carry out the heat exchange, further promote heat transfer fin's heat transfer effect.
Description
Technical Field
The application belongs to the technical field of air conditioners, and particularly relates to a fin assembly, a heat exchanger and an air conditioner.
Background
The finned tube heat exchanger has wide application in air conditioning, refrigerating and heating equipment. Refrigerant flows inside the heat exchange tubes of the heat exchanger, and heated or cooled air flows on the fin sides outside the heat exchange tubes. Because the heat exchange effect of air is poorer than that of refrigerant, the air side thermal resistance occupies 80-90% of the total thermal resistance of the heat exchanger. Therefore, the heat exchange performance of the whole heat exchanger can be effectively improved by optimizing the heat exchange of the air side.
The fins outside the traditional heat exchange tubes comprise straight fins, so that the heat exchange area can be increased only, and the heat exchange capacity is enhanced without disturbing air. The air-conditioning system also comprises corrugated fins, louvered fins and open-bridge fins, and although the air can be disturbed to thin the boundary layer on the surface of the fins, the corresponding air resistance is increased. When air passes through the heat exchange tube, the air is blocked by the heat exchange tube and is separated by the heat exchange tube, the air continuously flows along the surface of the heat exchange tube, and the flowing inertia of the air enables one side, close to the leeward side, of the heat exchange tube to become a wake region, so that the heat exchange efficiency of the heat exchanger is low. When the surface temperature of the fins is lower than the dew point temperature, condensed water can be generated on the surfaces of the fins, the air resistance is increased due to the condensed water which is not discharged in time, the heat transfer capacity of the fins is reduced, and the heat exchange efficiency of the heat exchanger is not high.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a fin subassembly, heat exchanger and air conditioner, can promote heat exchange efficiency.
In order to solve the above-mentioned problems, the present application provides a fin assembly including:
the fin base surface is provided with a slotted bridge piece;
the slotted bridge piece comprises: a top sheet and two support members, the top sheet being disposed obliquely with respect to the fin base surface; the top sheet is spanned over the fin base surface via two of the support sections.
Optionally, the top sheet and the fin base surface form an included angle of 15 ° to 23 °.
Optionally, a through hole is formed in the fin base surface, and the through hole is opposite to the top plate in the thickness direction of the fin base surface.
Optionally, a plurality of the slotted bridge pieces are arranged in a plurality of rows along the length direction of the fin base surface, and the inclined directions of the top pieces in two adjacent rows are symmetrically arranged.
Optionally, all of the slotted bridge pieces in each column have the same inclination direction and inclination angle.
Optionally, the distance between adjacent slotted bridges in one row is greater than the distance between adjacent slotted bridges in the next row in the direction of airflow over the base surfaces of the fins.
Optionally, a plurality of heat exchange tube holes distributed along the length direction of the fin base surface are formed in the fin base surface, and each heat exchange tube hole is located between a part of the slotted bridge pieces.
Optionally, the fin base surfaces between adjacent heat exchange tube holes are provided with corrugated channels, and the corrugated channels are arranged in a corrugated manner along the width direction of the fin base surfaces.
Optionally, the corrugated channel is provided in plurality, the length of the corrugated channel increasing in the direction of airflow over the fin base surface.
Optionally, the support member comprises an upstanding plate disposed perpendicular to the fin base surface; the included angle between the upright plate and the width direction of the fin base surface is increased in the airflow direction along the fin base surface.
Optionally, one slotted bridge piece is arranged on a part of the row between adjacent heat exchange tube holes on the windward side along the fin base surface, and the length of the slotted bridge piece on one row is smaller than that of the slotted bridge piece on the next row along the airflow direction on the fin base surface.
Optionally, a plurality of slotted bridge pieces arranged at intervals are arranged on part of the rows between adjacent heat exchange tube holes on the air outlet side of the fin base surface.
According to another aspect of the present application, there is provided a heat exchanger comprising a fin assembly as described above.
According to still another aspect of the present application, there is provided an air conditioner including the fin assembly as described above or the heat exchanger as described above.
The present application provides a fin assembly comprising: the fin base surface is provided with a slotted bridge piece; the slotted bridge piece comprises: a top sheet and two support members, the top sheet being disposed obliquely with respect to the fin base surface; the top sheet is spanned over the fin base surface via two of the support sections. Through set up the bridge piece that cracks that the slope set up on the fin base face, make the flow in-process of air on the fin base face change flow direction, the velocity of flow also can increase gradually, can with the heat exchange tube abundant carry out the heat exchange, further promote heat transfer fin's heat transfer effect.
Drawings
FIG. 1 is a schematic structural view of a fin assembly according to an embodiment of the present application;
fig. 2 is a cross-sectional view taken along line a-a of fig. 1 in accordance with an embodiment of the present application.
The reference numerals are represented as:
1. a fin base surface; 11. a through hole; 2. a flat fin region; 3. a heat exchange tube hole; 4. a slotted bridge piece region; 5. slotting bridge pieces; 6. an upright plate; 7. a topsheet; 8. a corrugated channel.
Detailed Description
Referring collectively to fig. 1-2, in accordance with an embodiment of the present application, a fin assembly includes:
the fin base surface 1 is provided with a slotted bridge piece 5;
the slotted bridge piece 5 comprises: a top sheet 7 and two support members, the top sheet 7 being obliquely arranged with respect to the fin base surface 1; the top sheet 7 is spanned over the fin base 1 via two of the support sections.
This application sets up slot bridge piece 5 including straight fin on fin base face 1, because set up for the slope between top piece 7 of slot bridge piece 5 and the fin base face 1 for the air current direction of flowing through fin base face 1 changes, has changed the boundary layer on the fin base face 1, and local velocity of flow can obtain increasing, reduces the thermal resistance, has promoted heat transfer capacity and heat exchange efficiency.
When air flows through the surface of the flat plate, the velocity of the air fluid is sharply increased along with the increase of the distance from the surface of the flat plate due to the viscosity effect of the surface of the flat plate, the velocity is increased to be close to the velocity of the main flow after passing through a thin layer, and the thin layer is a boundary layer. The thinner the boundary layer thickness is, the more drastic the speed change is, which is beneficial to the heat transfer and the better the heat exchange is. But as the boundary layer thickness increases, heat transfer becomes progressively worse.
In some embodiments, the topsheet 7 and the fin base 1 are angled at 15 ° to 23 °.
The angle range can improve the heat exchange capacity and the heat exchange efficiency and does not obstruct the gas flow.
In some embodiments, the fin base surface 1 is provided with a through hole 11, and the through hole 11 is opposite to the top sheet 7 in the thickness direction of the fin base surface 1.
This application slotting bridge piece 5 is for being erect fin base face 1 upper segment after being cut, has formed through-hole 11 after the cutting, and the part that is erect through support piece and form top piece 7, for the change of the boundary layer on more conveniently promoting fin base face 1, reduces the thermal resistance, promotes heat exchange efficiency.
In some embodiments, a plurality of slit bridge pieces 5 are arranged in a plurality of rows along the length direction of the fin base surface 1, and the inclination directions of the top sheets 7 in two adjacent rows are symmetrically arranged. Optionally, all of the slotted bridges 5 in each column of the slotted bridges 5 have the same inclination direction and inclination angle.
When air flows through the open-bridge fins, the cross-sectional flow area is gradually smaller under the action of the top sheet 7 which is inclined downwards towards the base surface along the air flow direction, and the air is gradually accelerated to strengthen heat exchange. Under the action of the next top sheet 7 which is inclined upwards towards the base surface along the air flow direction, the flow cross section area is gradually increased, and the air flow resistance is reduced; the air flow flows through the circulating lifting device, so that the boundary layer can be reduced, and the heat exchange efficiency is improved.
When the above-described plurality of rows of slit bridge pieces 5 are arranged, the inclination of the slit bridge pieces 5 in the first row may be set downward in the direction of the airflow along the fin base surface 1, so that the flow surface of the airflow is reduced.
In some embodiments, the spacing between adjacent said slotted bridges 5 in one row is greater than the spacing between adjacent said slotted bridges 5 in the next row in the direction of the air flow on said fin base surface 1.
The slotted bridge pieces 5 are arranged on a line through which air flows, the air is guided, and the distance between every two adjacent rows of slotted bridge pieces 5 is changed, so that the flowing direction of the air is changed in the flowing process on the straight fins, the flowing speed is gradually increased, the boundary layer phenomenon is reduced, and the heat exchange efficiency is improved.
In some embodiments, a plurality of heat exchange tube holes 3 are arranged on the fin base surface 1 and distributed along the length direction of the fin base surface 1, and each heat exchange tube hole 3 is positioned between part of the slotted bridge pieces 5.
The heat exchange tube hole 3 is arranged on the fin base surface 1 without the slotted bridge piece 5, so that the heat exchange tube can be conveniently penetrated, and the air flow guided by the slotted bridge piece 5 can be intensively subjected to sufficient heat exchange with the heat exchange tube, thereby improving the heat exchange effect.
In some embodiments, the fin base surfaces 1 between adjacent heat exchange tube holes 3 are provided with corrugated channels 8, and the corrugated channels 8 are arranged in a corrugated manner along the width direction of the fin base surfaces 1. Optionally, the corrugated channels 8 are provided in plural, and the length of the corrugated channels 8 increases in the direction of the airflow on the fin base surface 1.
The corrugated channel 8 is arranged along the length direction of the fin base surface 1, so that air flow is disturbed to strengthen heat exchange, and condensed water drops are discharged out of the fins in time. The length of the adjacent corrugated channel 8 is changed, so that the heat exchange efficiency of the heat exchange tube is improved.
In some embodiments, the support comprises an upright plate 6, said upright plate 6 being arranged perpendicular to said fin base surface 1; the included angle between the upright plate 6 and the width direction of the fin base surface 1 increases in the airflow direction along the fin base surface 1.
The installation angle of the vertical plate 6 in the slotted bridge piece 5 is changed, so that the air flow is better guided, and the heat exchange effect is promoted to be improved.
In some embodiments, one of the slotted bridge pieces 5 is provided in a partial row between adjacent heat exchange tube holes 3 on the windward side along the fin base surface 1, and the length of the slotted bridge piece 5 in one row is smaller than the length of the slotted bridge piece 5 in the next row in the airflow direction on the fin base surface 1. Optionally, a plurality of slit bridge pieces 5 arranged at intervals are arranged on the partial rows between adjacent heat exchange tube holes 3 on the air outlet side of the fin base surface 1.
Through setting up the quantity change of slotting bridge piece 5, reduce the air flow resistance, improve the heat transfer effect.
According to another aspect of the present application, there is provided a heat exchanger comprising a fin assembly as described above.
The heat exchanger comprises efficient heat exchange fins, wherein fin components in the heat exchange fins can comprise fin base surfaces 1, straight fin areas 2, heat exchange tube holes 3, bridged fin areas, slotted bridge pieces 5, upright plates 6 and top plates 7; the fin base surface 1 is provided with a heat exchange tube hole 3 with a flanging for being sleeved on a heat exchange tube in a penetrating way.
Because the windward side air boundary layer of the straight fin is thin, the heat exchange capacity is good, meanwhile, the air flow resistance is low, the area close to the heat exchange tube on the windward side is called a high heat exchange area, but the area far away from the heat exchange tube on the windward side is provided with a thin boundary layer, but the heat transferred to the fin area by the copper tube is less, so that the area has poor heat exchange and is called a low heat exchange area. The heat transfer process is to being radial transmission all around by the heat exchange tube, and high heat transfer is regional because it is nearer apart from the heat exchange tube, consequently transmits the regional heat more, and the heat transfer condition is better, and this regional surface temperature is higher, need not increase extra intensive heat transfer structure. The heat exchange tube is far away from the low heat exchange area, and heat is gradually taken away by air when being transferred to the area, so that the heat transferred to the area is less, the surface temperature is lower, and the heat exchange in the area is poorer if the heat exchange structure is not enhanced.
In order to improve the overall heat exchange capacity of the fins and reduce the air flow resistance as much as possible, the flat fins are adopted in a high heat exchange area, and the slotted bridge pieces 5 are arranged in a low heat exchange area.
A raised slotted bridge piece 5 is arranged on the fin base surface 1, the slotted bridge piece 5 is composed of two upright plates 6 and a top plate 7, and the top plate 7 is connected with the fin base surface 1 through the two upright plates 6 perpendicular to the fin base surface 1. The arrangement direction of the upright plates 6 vertical to the fin base surface 1 and the horizontal center line of the heat exchange tube holes 3 gradually increase in included angle for guiding the air flow. The slotted bridge pieces 5 passing through the upper and lower sides of the horizontal center line of the heat exchange pipe hole 3 along the air flowing direction are symmetrically distributed. And the distance between the adjacent upright plates 6 of the slotted bridge pieces 5 on the upper and lower sides is gradually reduced along the air flow direction. The length of the slotted bridge pieces 5 is gradually increased along the air flowing direction, and the last two rows of long slotted bridge pieces 5 are respectively divided into three sections of short slotted bridge pieces 5.
Corrugated channels 8 are arranged on two sides of the vertical center line of the heat exchange pipe hole 3, and the length of the corrugated channel 8 on the windward side near the heat exchange pipe hole 3 in the vertical direction is slightly shorter than that of the corrugated channel 8 on the leeward side.
The top plate 7 of the slit bridge piece 5 is obliquely arranged, and the included angle between the top plate 7 and the fin base surface 1 is 15-23 degrees. And along the air flow direction, the top sheets 7 of two adjacent slotted bridge pieces 5 are symmetrically arranged. The top sheets 7 of the first row of slotted bridge pieces 5 along the air flowing direction are inclined downwards, the top sheets 7 of the second row of slotted bridge pieces 5 are inclined upwards, and the rest is done in the same way; and the top sheets 7 of the slotted bridge pieces 5 in each row are all at the same angle to the fin base surface 1.
According to still another aspect of the present application, there is provided an air conditioner including the fin assembly as described above or the heat exchanger as described above.
It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (13)
1. A fin assembly, comprising:
the fin base surface (1), wherein the fin base surface (1) is provided with a slotted bridge piece (5);
the slotted bridge piece (5) comprises: a top sheet (7) and two supports, the top sheet (7) being obliquely arranged with respect to the fin base plane (1); the top sheet (7) is erected on the fin base surface (1) through two supporting pieces;
the fin base surface (1) is provided with a through hole (11), and the through hole (11) is opposite to the top plate (7) along the thickness direction of the fin base surface (1).
2. A fin assembly according to claim 1, wherein the top sheet (7) is angled at an angle of 15 ° to 23 ° to the fin base surface (1).
3. Fin assembly according to claim 1 or 2, wherein a plurality of said slotted bridge pieces (5) are arranged in a plurality of rows along the length of said fin base surface (1), the inclination direction of said top sheets (7) of two adjacent rows being arranged symmetrically.
4. A fin assembly according to claim 3, wherein the inclination direction and inclination angle of all the slotted bridge pieces (5) on each column of slotted bridge pieces (5) are the same.
5. A fin assembly according to claim 4, wherein the spacing of adjacent said slotted bridges (5) in one row is greater than the spacing of adjacent said slotted bridges (5) in the next row in the direction of air flow over said fin base surface (1).
6. A fin assembly according to claim 5, wherein the fin base surface (1) is provided with a plurality of heat exchange tube holes (3) distributed along the length direction of the fin base surface (1), and each heat exchange tube hole (3) is positioned between part of the slotted bridge pieces (5).
7. A fin assembly according to claim 6, wherein the fin base surfaces (1) between adjacent heat exchange tube holes (3) are provided as corrugated channels (8), and the corrugated channels (8) are arranged in a corrugated manner in the width direction of the fin base surfaces (1).
8. A fin assembly according to claim 7, wherein said corrugated channels (8) are provided in plurality, the length of said corrugated channels (8) increasing in the direction of air flow over said fin base surface (1).
9. The fin assembly according to claim 6, wherein the support member includes an upright plate (6), the upright plate (6) being disposed perpendicular to the fin base surface (1); the included angle between the upright plate (6) and the width direction of the fin base surface (1) is increased in the airflow direction along the fin base surface (1).
10. A fin assembly according to claim 6, wherein one of said slotted bridges (5) is provided in a partial row between adjacent heat exchange tube holes (3) on the windward side on said fin base surface (1), and the length of said slotted bridge (5) in one row is smaller than the length of said slotted bridge (5) in the next row in the direction of air flow on said fin base surface (1).
11. A fin assembly according to claim 10, wherein a plurality of said slotted bridges (5) are provided at intervals in a partial row between adjacent heat exchange tube holes (3) on the air outlet side of said fin base surface (1).
12. A heat exchanger comprising a fin assembly according to any one of claims 1 to 11.
13. An air conditioner comprising a fin assembly according to any one of claims 1 to 11 or a heat exchanger according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693540.XU CN212778813U (en) | 2020-08-14 | 2020-08-14 | Fin assembly, heat exchanger and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021693540.XU CN212778813U (en) | 2020-08-14 | 2020-08-14 | Fin assembly, heat exchanger and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212778813U true CN212778813U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021693540.XU Active CN212778813U (en) | 2020-08-14 | 2020-08-14 | Fin assembly, heat exchanger and air conditioner |
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| Country | Link |
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| CN (1) | CN212778813U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928713A (en) * | 2020-08-14 | 2020-11-13 | 珠海格力电器股份有限公司 | Fin assembly, heat exchanger and air conditioner |
| CN113654383A (en) * | 2021-07-28 | 2021-11-16 | 祥博传热科技股份有限公司 | High-efficiency heat exchanger for phase-change cooling system |
| CN113758353A (en) * | 2021-08-13 | 2021-12-07 | 博格思众（常州）热交换器有限公司 | Fin, heat exchanger and refrigerating system |
-
2020
- 2020-08-14 CN CN202021693540.XU patent/CN212778813U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928713A (en) * | 2020-08-14 | 2020-11-13 | 珠海格力电器股份有限公司 | Fin assembly, heat exchanger and air conditioner |
| CN113654383A (en) * | 2021-07-28 | 2021-11-16 | 祥博传热科技股份有限公司 | High-efficiency heat exchanger for phase-change cooling system |
| CN113758353A (en) * | 2021-08-13 | 2021-12-07 | 博格思众（常州）热交换器有限公司 | Fin, heat exchanger and refrigerating system |
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