CN109945726B - Inserted sheet fin and heat exchanger - Google Patents
Inserted sheet fin and heat exchanger Download PDFInfo
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- CN109945726B CN109945726B CN201711383048.5A CN201711383048A CN109945726B CN 109945726 B CN109945726 B CN 109945726B CN 201711383048 A CN201711383048 A CN 201711383048A CN 109945726 B CN109945726 B CN 109945726B
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Abstract
The invention provides an insert fin and a heat exchanger. The fin comprises a fin body (1), wherein the fin body (1) is provided with a first flat tube groove (2) and a second flat tube groove (3) at intervals along the length direction, and the depth of the first flat tube groove (2) is smaller than that of the second flat tube groove (3). According to the inserted fin, the fin can form a temperature gradient along the air inlet direction under the frosting working condition, the frosting amount at the front end of the fin is reduced, and the heat exchange performance of the heat exchanger is improved.
Description
Technical Field
The invention relates to the technical field of heat exchange equipment, in particular to an inserted sheet fin and a heat exchanger.
Background
When the micro-channel heat exchanger is applied to a heat pump system at present, the fin structure is an insert structure according to the requirement of fin drainage.
Because the heat exchange performance of the non-frosting working condition needs to be considered, the distance between the two flat pipes needs to be as small as possible, the fin efficiency is too high, the surface of the heat exchanger is frosted quickly due to the fact that the temperature of the fins between the two flat pipes is too low under the frosting working condition, the wind resistance is increased, and the heat exchange performance is reduced sharply.
Disclosure of Invention
The invention aims to provide an inserting piece fin and a heat exchanger, which can enable the fin to form a temperature gradient along an air inlet direction under the frosting working condition, reduce the frosting amount at the front end of the fin and improve the heat exchange performance of the heat exchanger.
In order to solve the technical problem, the invention provides an insert fin, which comprises a fin body, wherein the fin body is provided with a first flat tube groove and a second flat tube groove at intervals along the length direction, and the depth of the first flat tube groove is smaller than that of the second flat tube groove.
According to the fin inserting piece, the depths of the first flat tube groove and the second flat tube groove are different, so that a temperature gradient can be formed along the air inlet direction, the heat exchange quantity of the front end of the fin is reduced, when the heat exchanger is in a frosting working condition, the heat exchange quantity of the front end of the fin can be reduced, the frosting speed of the surface of the heat exchanger is reduced, the problem of overlarge wind resistance caused by frosting is avoided, and the heat exchange performance of the heat exchanger is ensured.
Drawings
FIG. 1 schematically illustrates a structural view of a tab fin according to a first embodiment of the invention;
FIG. 2 schematically illustrates a structural view of a tab fin of a second embodiment of the invention;
FIG. 3 schematically illustrates a side view of a tab fin of a second embodiment of the invention;
FIG. 4 schematically illustrates a structural view of a tab fin of a third embodiment of the invention;
FIG. 5 schematically illustrates a structural view of a tab fin according to a fourth embodiment of the invention;
FIG. 6 schematically illustrates a structural view of a tab fin according to a fifth embodiment of the invention;
FIG. 7 schematically illustrates a structural view of a tab fin according to a sixth embodiment of the invention;
FIG. 8 schematically shows a structural view of a tab fin of a seventh embodiment of the invention;
FIG. 9 schematically illustrates a dimensional structure of an insert fin according to an embodiment of the invention.
Reference numbers in the figures: 1. a fin body; 2. a first flat tube slot; 3. a second flat tube slot; 4. a first reinforcing rib; 5. a first windowing; 6. grooving; 7. positioning and flanging the sheet distance; 8. second windowing; 9. and a second reinforcing rib.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Referring to fig. 1 to 9, according to an embodiment of the present invention, the fin-fin includes a fin body 1, a first flat tube groove 2 and a second flat tube groove 3 are formed in the fin body 1 at intervals along a length direction, and a depth of the first flat tube groove 2 is smaller than a depth of the second flat tube groove 3.
According to the fin insert, the depths of the first flat tube groove 2 and the second flat tube groove 3 are different, the widths of the flat tubes installed on the first flat tube groove 2 and the second flat tube groove 3 are different, the flat tubes on the second flat tube groove 3 exchange heat with air firstly, and the flat tubes on the first flat tube groove 2 exchange heat with air later, so that the groove interval of the second flat tube groove 3 can be increased through the first flat tube groove 2, the heat exchanger forms a temperature gradient along the air inlet direction, the heat exchange quantity of the front end of the fin is reduced, the heat exchange quantity of the front end of the fin can be reduced when the heat exchanger is in a frosting working condition, the frosting speed of the surface of the heat exchanger is reduced, the problem of overlarge air resistance caused by frosting is avoided, and the heat exchange performance of the heat exchanger is ensured.
The distance between the edge of the air inlet side fin and the flat pipe is increased through the arrangement of the flat pipe grooves with different depths, so that the surface of the fin forms a temperature gradient in the flat pipe groove area with a shallow depth, the heat transfer effect of the fin is reduced, and the frosting amount of the area is reduced. Meanwhile, due to the flat tubes with small widths, heat exchange at the rear ends of the fins is enhanced, and the overall heat exchange efficiency of the fins cannot be reduced.
Preferably, at least one side of the inserted sheet fin is provided with a sheet distance positioning flanging 7; and/or the fin bodies 1 on two sides of the flat tube groove are provided with second windows 8; and/or a second reinforcing rib 9 is arranged on the front side of the second flat pipe groove 3 along the air inlet direction.
Referring to fig. 1 in combination, according to the first embodiment of the present invention, at least two first flat tube grooves 2 are disposed between two adjacent second flat tube grooves 3. Because the number of the first flat tube grooves 2 between two adjacent second flat tube grooves 3 is large, the space between the first flat tube grooves 2 can be reduced, the heat exchange efficiency of the area where the first flat tube grooves 2 are located is improved, the space between the second flat tube grooves 3 is increased, and the frosting amount of fins on the air inlet side is reduced.
Referring to fig. 2 and 3 in combination, the second embodiment of the present invention is substantially the same as the first embodiment except that in the present embodiment, a first reinforcing rib 4 is provided at a position between two adjacent second flat tube troughs 3 on the front side of the first flat tube trough 2 in the air intake direction. In this embodiment, the reinforcing rib is arranged on the air inlet side of the first flat tube groove 2 between the second flat tube grooves 3, so that the streaming can be formed, and the fin support strength can be increased when the flat tube with smaller width is inserted into the fin.
Referring to fig. 4 in combination, a third embodiment of the present invention is substantially the same as the first embodiment except that in this embodiment, the width of the first flat tube groove 2 is greater than the width of the second flat tube groove 3. The width sizes of the first flat tube groove 2 and the second flat tube groove 3 are different, and the flow rates of refrigerants entering the heat exchange flat tubes with different widths respectively can be adjusted through the width of the flat tube grooves. The width of the second flat pipe groove 3 is smaller than that of the first flat pipe groove 2, so that the flow of the refrigerant flowing into the flat pipe with the larger width is equal to the flow of the refrigerant flowing through the flat pipe with the smaller width or smaller than the flow of the refrigerant flowing into the flat pipe with the smaller width.
Referring to fig. 5 in combination, a fourth embodiment according to the present invention is substantially the same as the first embodiment except that in the present embodiment, the width of the first flat tube groove 2 is smaller than the width of the second flat tube groove 3. When the fin is assembled, the flat pipe with larger width firstly contacts the fin to be positioned, in order to improve the assembly reliability, the width of the second flat pipe groove 3 is larger than that of the first flat pipe groove 2, and the flow of the refrigerant passing through different flat pipes can be adjusted by adjusting the flow area of the flat pipes.
Referring to fig. 6 in combination, a fifth embodiment of the present invention is substantially the same as the second embodiment, except that in this embodiment, the first reinforcing ribs 4 are provided with first windows 5 on the front side, which can enhance the heat exchange effect of the heat exchanger.
Referring to fig. 7 in combination, a sixth embodiment of the present invention is substantially the same as the first embodiment, except that in this embodiment, a flat tube slot pitch is provided between two adjacent flat tube slots, and at least two flat tube slot pitches are different, so that the heat exchange effect of the second half section of the tab fin can be enhanced by the different flat tube slot pitches. The flat tube groove interval here can be the interval between the adjacent first flat tube groove 2, also can be the interval between adjacent first flat tube groove 2 and the flat tube groove 3 of second.
Referring to fig. 8 in combination, a seventh embodiment of the present invention is substantially the same as the first embodiment, except that in this embodiment, a slot 6 extending in the air intake direction is provided at a position in front of the first flat tube groove 2 and between two adjacent second flat tube grooves 3 along the air intake direction, and the slot 6 is provided corresponding to the first flat tube groove 2. The slotting 6 is arranged on the air inlet side of the first flat tube slot with shallow depth, so that the heat conduction continuity of the fin body 1 can be damaged, the temperature gradient of the area is increased, the frosting phenomenon of the area during refrigeration is effectively avoided, and the heat exchange performance of the heat exchanger is ensured.
Referring to fig. 9 in combination, preferably, the width of the tab fin is L, the width of the first flat tube groove 2 is B2, the width of the second flat tube groove 3 is B1, the depth of the first flat tube groove 2 is L2, the width of the second flat tube groove 3 is L1, wherein,
when B1 is more than or equal to B2:
when B1 < B2:
by limiting the structural parameters, the frosting performance of the heat exchanger with the structure can be guaranteed to be optimal, the fins can be effectively prevented from frosting, and the heat exchange performance of the heat exchanger is guaranteed.
According to the embodiment of the invention, the heat exchanger comprises an inserting fin and a heat exchange flat tube arranged on the inserting fin, the inserting fin is arranged on the inserting fin, the heat exchange flat tube comprises a first heat exchange flat tube and a second heat exchange flat tube, the first heat exchange flat tube is matched with the first flat tube groove 2 in shape and is arranged in the first flat tube groove 2, and the second heat exchange flat tube is matched with the second flat tube groove 3 in shape and is arranged in the second flat tube groove 3.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The fin with the inserting pieces is characterized by comprising a fin body (1), wherein the fin body (1) is provided with a first flat tube groove (2) and a second flat tube groove (3) at intervals along the length direction, and the depth of the first flat tube groove (2) is smaller than that of the second flat tube groove (3); a first reinforcing rib (4) is arranged on the front side of the first flat pipe groove (2) and between two adjacent second flat pipe grooves (3) along the air inlet direction;
at least two first flat pipe grooves (2) are arranged between two adjacent second flat pipe grooves (3);
the width of the first flat pipe groove (2) is larger than that of the second flat pipe groove (3); or the width of the first flat pipe groove (2) is smaller than that of the second flat pipe groove (3).
2. An insert fin according to claim 1, characterized in that the front side of the first reinforcing rib (4) is provided with a first fenestration (5).
3. The fin according to claim 1, wherein a flat tube slot pitch is provided between two adjacent flat tube slots, and at least two flat tube slot pitches are different.
4. The fin according to claim 1, wherein a slot (6) extending in the air intake direction is arranged at the front side of the first flat tube groove (2) and between two adjacent second flat tube grooves (3) along the air intake direction, and the slot (6) is arranged corresponding to the first flat tube groove (2).
5. The fin according to claim 2, wherein a slot (6) extending in the air intake direction is arranged at the front side of the first flat tube groove (2) and between two adjacent second flat tube grooves (3) along the air intake direction, and the slot (6) is arranged corresponding to the first flat tube groove (2).
6. The fin insert according to claim 3, wherein a slot (6) extending in the air inlet direction is formed in the front side of the first flat tube groove (2) and between two adjacent second flat tube grooves (3), and the slot (6) is formed corresponding to the first flat tube groove (2).
7. The insert fin according to any one of claims 1 to 6, wherein at least one side of the insert fin is provided with a pitch positioning cuff (7); and/or a second window (8) is arranged on the fin body (1) at two sides of the flat tube groove; and/or a second reinforcing rib (9) is arranged on the front side of the second flat pipe groove (3) along the air inlet direction.
8. The utility model provides a heat exchanger, includes the inserted sheet fin and sets up flat heat transfer pipe on the inserted sheet fin, a serial communication port, the inserted sheet fin be any one of claims 1 to 7 the inserted sheet fin, flat heat transfer pipe includes flat first heat transfer pipe and the flat pipe of second heat transfer, flat first heat transfer pipe with first flat tub of groove (2) shape phase-match and set up in the flat tub of groove of first (2), flat pipe of second heat transfer with flat tub of groove of second (3) shape phase-match and set up in the flat tub of groove of second (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383048.5A CN109945726B (en) | 2017-12-20 | 2017-12-20 | Inserted sheet fin and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383048.5A CN109945726B (en) | 2017-12-20 | 2017-12-20 | Inserted sheet fin and heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109945726A CN109945726A (en) | 2019-06-28 |
| CN109945726B true CN109945726B (en) | 2021-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711383048.5A Active CN109945726B (en) | 2017-12-20 | 2017-12-20 | Inserted sheet fin and heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109945726B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192672A (en) * | 2010-03-16 | 2011-09-21 | 乐金电子(天津)电器有限公司 | Flat tube heat exchanger structure and assembling method thereof |
| JP2013007540A (en) * | 2011-06-27 | 2013-01-10 | Mitsubishi Electric Corp | Heat exchanger and air conditioner with the heat exchanger |
| CN103339457A (en) * | 2011-01-21 | 2013-10-02 | 大金工业株式会社 | Heat exchanger and air conditioner |
| CN203980989U (en) * | 2014-06-27 | 2014-12-03 | 广东美的制冷设备有限公司 | Parallel-flow heat exchanger and fin thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782337A (en) * | 2009-01-20 | 2010-07-21 | 三花丹佛斯（杭州）微通道换热器有限公司 | Micro-channel heat exchanger |
| EP2725311B1 (en) * | 2012-10-29 | 2018-05-09 | Samsung Electronics Co., Ltd. | Heat exchanger |
| CN203550714U (en) * | 2013-10-21 | 2014-04-16 | 美的集团股份有限公司 | Fin and heat exchanger adopting same |
| CN203550718U (en) * | 2013-10-21 | 2014-04-16 | 美的集团股份有限公司 | Fin and heat exchanger adopting same |
| CN203605782U (en) * | 2013-11-12 | 2014-05-21 | 美的集团股份有限公司 | Collecting main for parallel flow heat exchanger of air conditioner and parallel flow heat exchanger |
| CN105004210B (en) * | 2015-07-20 | 2018-01-05 | 广东美的制冷设备有限公司 | A kind of fin and the heat exchanger and air-conditioning containing it |
-
2017
- 2017-12-20 CN CN201711383048.5A patent/CN109945726B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192672A (en) * | 2010-03-16 | 2011-09-21 | 乐金电子(天津)电器有限公司 | Flat tube heat exchanger structure and assembling method thereof |
| CN103339457A (en) * | 2011-01-21 | 2013-10-02 | 大金工业株式会社 | Heat exchanger and air conditioner |
| JP2013007540A (en) * | 2011-06-27 | 2013-01-10 | Mitsubishi Electric Corp | Heat exchanger and air conditioner with the heat exchanger |
| CN203980989U (en) * | 2014-06-27 | 2014-12-03 | 广东美的制冷设备有限公司 | Parallel-flow heat exchanger and fin thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109945726A (en) | 2019-06-28 |
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