CN211060720U

CN211060720U - Fin and heat exchanger

Info

Publication number: CN211060720U
Application number: CN201922007722.0U
Authority: CN
Inventors: 刘恒恒
Original assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Current assignee: Aux Air Conditioning Co Ltd; Ningbo Aux Electric Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-07-21
Anticipated expiration: 2029-11-19

Abstract

The utility model provides a fin, is applied to heat exchange technical field, includes anterior segment lamellar body and back end lamellar body, along the air flow direction, the anterior segment lamellar body is straight structure, and the back end lamellar body is the ripple structure, and the one end of anterior segment lamellar body and the one end of back end lamellar body are connected. The application also discloses a heat exchanger, because there is the entry effect during the fin heat transfer, the fin anterior segment heat transfer along the air flow direction is strong, and the back end heat transfer is more weak, consequently, at the straight structure for the fin anterior segment, the heat transfer can be reinforceed to the ripple structure for the back end, with the heat transfer of fin and the comprehensive properties optimization of flow resistance, and then promote the comprehensive heat transfer ability of fin.

Description

Fin and heat exchanger

Technical Field

The application relates to the technical field of heat exchange, in particular to a fin and a heat exchanger.

Background

In order to be beneficial to defrosting, the condenser of the outdoor unit of the household air conditioner has the commonly used fins such as straight fins, corrugated fins, sawtooth fins and porous fins, different fins have different heat exchange characteristics, the flow resistance of the straight fins is small, the heat exchange capacity is also small, the heat exchange capacity of the corrugated fins is strong, but the flow resistance is also high, and the porous fins are obtained by opening holes in the straight fins and are used for heat exchange environment with a phase change process.

SUMMERY OF THE UTILITY MODEL

The main objective of this application provides a fin and heat exchanger, aims at promoting the comprehensive heat transfer ability of fin.

In order to achieve the above object, a first aspect of the embodiments of the present application provides a fin, which includes a front section sheet body and a rear section sheet body, wherein, along an air flowing direction, the front section sheet body is of a straight structure, the rear section sheet body is of a corrugated structure, and one end of the front section sheet body is connected with one end of the rear section sheet body.

The degree of an included angle between a windward side and a horizontal plane in the rear-section sheet body along the air flowing direction is 5 degrees to 40 degrees.

Furthermore, the degree of an included angle between a leeward surface in the rear-section sheet body along the air flowing direction and a horizontal plane is-40 degrees to-65 degrees.

Further, the length of the front segment sheet is 20% to 50% of the total length of the fin.

Further, the junction of the front segment sheet body and the rear segment sheet body is in smooth transition.

Further, the fin is integrally formed.

A second aspect of the embodiments of the present application provides a heat exchanger, including a heat exchange tube and a fin according to the first aspect of the embodiments of the present application, the heat exchange tube is located on a front segment sheet body of the fin.

Further, along the air flowing direction, the length between the end part of the front section sheet body and the end part of the heat exchange tube accounts for 25.5% -35% of the total length of the fin.

According to the embodiment of the application, the fin that this application provided includes anterior segment lamellar body and back end lamellar body, and along the air flow direction, the anterior segment lamellar body is straight structure, and the back end lamellar body is ripple structure, and the one end of anterior segment lamellar body and the one end of back end lamellar body are connected. Because there is the entry effect during the fin heat transfer, the fin anterior segment heat transfer along the air flow direction is strong, and the back end heat transfer is less strong, consequently, at the straight structure for the fin anterior segment, the heat transfer can be reinforceed to the ripple structure for the back end, with the heat transfer of fin and the comprehensive properties optimization of flow resistance, and then promote the comprehensive heat transfer ability of fin.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a fin according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a fin according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a heat exchanger according to an embodiment of the present application.

Detailed Description

In order to make the purpose, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a fin according to an embodiment of the present application, the fin includes a front sheet 1 and a rear sheet 2, the front sheet 1 is a straight structure and the rear sheet 2 is a corrugated structure along an air flow direction, and one end of the front sheet 1 is connected to one end of the rear sheet 2. Because there is the entry effect during the fin heat transfer, the fin anterior segment heat transfer along the air flow direction is strong, and the back end heat transfer is less strong, consequently, at the straight structure for the fin anterior segment, the heat transfer can be reinforceed to the ripple structure for the back end, with the heat transfer of fin and the comprehensive properties optimization of flow resistance, and then promote the comprehensive heat transfer ability of fin.

In one embodiment of the present application, please refer to fig. 2, and fig. 2 is a schematic structural diagram of a fin according to an embodiment of the present application, wherein the air flow direction may be from left to right or from right to left, in this embodiment, for example, the angle α between the windward side 21 of the rear blade 2 along the air flow direction and the horizontal plane is 5 degrees to 40 degrees, and the angle β between the leeward side 22 of the rear blade 2 along the air flow direction and the horizontal plane is-40 degrees to-65 degrees.

Understandably, when the air flow direction changes, the windward side 21 and the leeward side 22 in the rear blade body 2 change accordingly.

In one embodiment of the present application, the length of the front-segment sheet body 1 accounts for 20% to 50% of the total length of the fin, and the overall heat exchange performance of the fin can be improved by 13.5% to 40% compared with a fin with a single structure.

In one of the embodiments of this application, the junction smooth transition of anterior segment lamellar body 1 and back end lamellar body 2, fin integrated into one piece, simple structure, processing is convenient.

In one of the embodiments of this application, can set up the hole simultaneously on anterior segment lamellar body 1 and the back end lamellar body 2 to be used for having the heat transfer environment of phase transition process. The holes can be formed in the front section sheet body 1 or the rear section sheet body 2 only, and the holes are multiple in number and can be arranged according to actual needs. The plurality of holes may be arranged in a random distribution, a uniform distribution or a regular distribution. The holes are regularly distributed, for example, a plurality of rows are arranged, the number of the holes in each row is equal, the holes are circumferentially arranged, the number of the holes in each circle is sequentially decreased, and the like.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a heat exchanger according to an embodiment of the present application, the heat exchanger includes a heat exchange tube 3 and a fin as shown in fig. 1, the heat exchange tube 3 is located on a front-section sheet 1 of the fin.

In one of the embodiments of the present application, the length between the end of the front blade body 1 and the end of the heat exchange tube 3 in the air flow direction is 25.5 to 35% of the total length of the fin, that is, as shown in fig. 3, the length between the left end of the fin and the left end of the heat exchange tube 3 is 25.5 to 35% of the total length of the fin. Compared with a single straight fin or corrugated fin, the comprehensive heat exchange performance of the heat exchanger can be improved by 13.5-40%.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above descriptions of the fin and the heat exchanger provided in the present application will be apparent to those skilled in the art from the following description, which should not be construed as limiting the present application.

Claims

1. The fin is characterized by comprising a front section sheet body and a rear section sheet body, wherein the front section sheet body is of a straight structure, the rear section sheet body is of a corrugated structure, and one end of the front section sheet body is connected with one end of the rear section sheet body.

2. The fin according to claim 1, wherein the angle between the windward side in the air flow direction and the horizontal plane in the rear segment body is 5 to 40 degrees.

3. The fin according to claim 1, wherein the degree of the included angle between the leeward surface in the air flow direction and the horizontal plane in the rear segment body is from-40 degrees to-65 degrees.

4. The fin according to claim 1, wherein the length of the front segment body is 20% to 50% of the total length of the fin.

5. The fin according to claim 1, wherein the front segment sheet and/or the rear segment sheet are provided with holes.

6. The fin according to claim 5, wherein the number of the holes is plural.

7. The fin according to any one of claims 1 to 6, wherein the junction of the front segment blade and the rear segment blade is a smooth transition.

8. The fin according to any one of claims 1 to 6, wherein the fin is integrally formed.

9. A heat exchanger comprising a heat exchange tube and a fin according to any one of claims 1 to 8, the heat exchange tube being located on a front-stage sheet body of the fin.

10. The heat exchanger of claim 9, wherein the length of the end of the front segment sheet from the end of the heat exchange tube in the air flow direction is 25.5% to 35% of the total length of the fin.