CN107144165B

CN107144165B - Combined heat exchange fin

Info

Publication number: CN107144165B
Application number: CN201710319730.1A
Authority: CN
Inventors: 钟静琴; 钟静清; 韦晗; 陶佳
Original assignee: Liuzhou Shentong Automobile Technology Co Ltd
Current assignee: Liuzhou Shentong Automobile Technology Co Ltd
Priority date: 2017-05-09
Filing date: 2017-05-09
Publication date: 2020-01-17
Anticipated expiration: 2037-05-09
Also published as: CN107144165A

Abstract

The invention relates to an automobile air-conditioning condenser, in particular to a combined heat exchange fin which comprises two thin slices, wherein the two thin slices are sleeved on a lining sleeve which can be fixedly connected with a radiating pipe of a condenser, the two thin slices can rotate relatively around the lining sleeve, a plurality of vent holes are arranged on each thin slice at intervals, and when the two thin slices rotate relatively, one thin slice can shield the vent hole of the other thin slice. The two sheets which can rotate relatively are taken as the heat exchange sheets, and the heating area of the heat exchange sheets can be properly increased according to different space requirements, so that the heat exchange effect is improved; simultaneously, still be provided with the ventilation hole on the sheet, and the relative rotation of two sheets of size accessible of ventilation hole changes to can require the ventilation area who adjusts the ventilation hole according to different environment, when guaranteeing the heat exchange efficiency of heat exchanger fin, reduce the windage.

Description

Combined heat exchange fin

Technical Field

The invention relates to an automobile air conditioner condenser, in particular to a combined heat exchange fin of the automobile air conditioner condenser.

Background

The condenser is the core part of vehicle air conditioner, and well bus and bus mostly all adopt tube-tape formula or tube-fin condenser, the condenser that a pipe left and right snakelike winding promptly, and its heat transfer area is big, but inefficiency, occupation space are big, the consumptive material is many. Existing cars basically employ advanced parallel flow condensers. At present, an important component of a parallel flow condenser of an automobile air conditioner is a condenser core body, and the condenser core body is developed in the direction of how to strengthen heat transfer, reduce wind resistance, improve heat exchange efficiency and the like. The principle of the existing parallel flow condenser for an automotive air conditioning system is as follows: the refrigerant enters the collecting pipe from the inlet, and flows out from the outlet after the heat of the refrigerant is dissipated through the core body. Thus, the heat dissipation capacity of the core determines the quality of the condenser. The core body in the prior art is generally formed by welding bent heat exchange plates on a radiating pipe, and the heat exchange plates in the form have the defects of poor heat transfer effect, high wind resistance and low heat exchange efficiency.

Disclosure of Invention

Aiming at the technical problems, the invention provides a combined heat exchange fin which can improve the heat exchange efficiency and reduce the wind resistance.

The technical scheme adopted by the invention for solving the technical problems is as follows: a combined heat exchange fin comprises two thin sheets, wherein the two thin sheets are sleeved on a lining which can be fixedly connected with a radiating pipe of a condenser, the two thin sheets can rotate around the lining relatively, a plurality of vent holes are formed in each thin sheet at intervals, and when the two thin sheets rotate relatively, one thin sheet can block the vent hole of the other thin sheet.

Preferably, a screw is axially fixed on one thin sheet, and a strip-shaped hole is formed in the other thin sheet close to the edge; when the two sheets rotate relatively, the screw moves along the strip-shaped hole; when the two sheets are relatively static, the two sheets are fixedly connected through the threads of the screw.

Preferably, each thin slice is provided with a central hole which can be sleeved on the bushing, and each vent hole is an arc-shaped hole taking the center of the central hole as the center of a circle.

Preferably, the circumferential distance between two adjacent arc-shaped holes is greater than or equal to the arc length of the arc-shaped holes.

Preferably, each of the thin plates has a square shape, and the square shape is a symmetrical square shape centering on the center of the central hole.

Preferably, one set of opposing edges of each of said sheets is linear.

Preferably, the other set of two opposite sides of each thin slice are arc-shaped with the center of the center hole as the center of a circle.

Preferably, one end of the bushing is provided with a flange for blocking the axial movement of the thin sheet, a threaded hole is axially formed in the flange, and the screw penetrates through the two thin sheets to be in threaded connection with the threaded hole.

Preferably, the bushing is formed with a ring groove, and the thin sheet is clamped in the ring groove through the central hole.

According to the technical scheme, the two sheets which can rotate relatively are taken as the heat exchange sheets, so that the heating area of the heat exchange sheets can be properly increased according to different space requirements, and the heat exchange effect is improved; simultaneously, still be provided with the ventilation hole on the sheet, and the relative rotation of two sheets of size accessible of ventilation hole changes to can require the ventilation area who adjusts the ventilation hole according to different environment, when guaranteeing the heat exchange efficiency of heat exchanger fin, reduce the windage.

Drawings

Fig. 1 is a schematic diagram of the forward structure of the present invention.

Fig. 2 is a schematic side cross-sectional view of the present invention.

Detailed Description

The present invention will be described in detail with reference to fig. 1 and 2, and the exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

A combined heat exchange fin comprises two thin sheets 1, wherein the two thin sheets are sleeved on a lining 6 which can be fixedly connected with a radiating pipe of an automobile air-conditioning condenser, the two thin sheets can rotate relatively around the lining, so that the heating area of the heat exchange fin is changed, and a plurality of vent holes 2 are arranged on each thin sheet at intervals, so that the wind resistance can be reduced, and the heat can be quickly taken away by an automobile in the driving process; when the two sheets rotate relatively, one sheet can shield the vent hole of the other sheet, so that the ventilation area of the vent hole can be changed. Therefore, the variable-area heat exchanger not only can realize the variable heat exchange area of the heat exchange fins, but also can realize the variable ventilation area of the ventilation holes, so that the heat exchange fins can be provided with the heat exchange fins with different heat dissipation effects according to different spaces and different operating environments, and the wind resistance is reduced while the effect and the efficiency of the heat exchange fins are ensured to be improved.

One thin sheet of the heat exchange sheet is axially fixed with a screw rod 3, and the other thin sheet is provided with a strip-shaped hole 4 close to the edge; when the two sheets rotate relatively, the screw moves along the strip-shaped hole; when the two slices are relatively static, the two slices are fixedly connected through the threads of the screw; the threaded connection can adopt the matching connection of a screw and a nut or the matching connection of the screw and a hole. In the implementation process, each the thin slice is provided with a center hole 5 which can be arranged on the radiating pipe, and each vent hole is an arc-shaped hole which takes the circle center of the center hole as the circle center, so that the change of the ventilation area of the vent hole can be ensured when the thin slice rotates around the radiating pipe. The circumferential distance between two adjacent arc-shaped holes is larger than or equal to the arc length of the arc-shaped holes, so that the ventilation holes can be completely shielded, and the heat dissipation area of the heat exchange plate under the windless environment is maximized.

Each slice is in a square shape, and the square shape is a symmetrical square shape taking the center of a center hole as the center, so that the processing is convenient, the installation is facilitated, the slices can be ensured to be still in a symmetrical shape after rotating, and the uniform heat dissipation is facilitated. One set of opposing edges of each of said fins is linear and all such fins are mounted on the tube to facilitate the placement of the entire condenser core. Each other set of opposite both sides of thin slice are the arc of using centre of a circle of centre bore as the centre of a circle, no matter the thin slice is rotatory, and its both ends all are circular-arc, and not only heat transfer area is big, and the installation is convenient moreover.

One end of the bushing is provided with a flange 61 for blocking the axial movement of the thin sheet, a threaded hole 62 is axially formed in the flange, and the screw penetrates through the two thin sheets to be in threaded connection with the threaded hole, so that the thin sheets are fixed on the bushing; since the thin sheet is close to the flange, the two are in surface contact, thereby improving the heat transfer effect of the two. In addition, the mode can avoid the adoption of a nut connected with the screw rod, and is favorable for convenient and quick installation. The bush is also provided with one or two annular grooves 63 which are preferably arranged close to the flange, so that the heat transfer effect is prevented from being reduced due to the clearance between the thin sheet and the flange; two slices or one slice pass through the centre bore card is established in this annular, sets up the annular and can prevent that the slice from rocking, increases the heat radiating area of bush simultaneously, further improves the radiating effect. Because the ring groove can clamp the thin sheet, the ring groove can be arranged on the lining only without designing a flange, so that the thin sheet can be fixed only by threaded connection of the screw rod, and the cost of the mode is lower; the other mode is that a flange and a ring groove are designed, but a threaded hole is not arranged on the flange, and the two thin sheets are directly connected and fixed through a screw and a nut, so that the stability of the mode is better; of course, the flange and the ring groove are designed, and the threaded hole is also designed, so that the stability of the thin sheet is better.

During installation, one thin sheet is sleeved on the bushing or in the annular groove of the bushing through the central hole to enable the thin sheet to be close to the flange, then the other thin sheet is sleeved on the bushing or in the annular groove of the bushing to enable the two thin sheets to be close to each other, and then the two thin sheets are fixed through the screw; finally, the bushing fixed with the thin sheet can be expanded or welded on the radiating pipe of the cooler. The invention can ensure that the two sheets are movably connected through the bushing, is convenient to disassemble, clean and maintain, is flexible and convenient to install, can flexibly adjust the positions of the two sheets according to different spaces and environments, and can reduce wind resistance while ensuring the heat dissipation efficiency.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention.

Claims

1. A modular heat exchanger fin which characterized in that: the two thin sheets are sleeved on a lining which can be fixedly connected with a radiating pipe of the condenser, the two thin sheets can rotate around the lining relatively, a plurality of vent holes are arranged at intervals on each thin sheet, and when the two thin sheets rotate relatively, one thin sheet can shield the vent hole of the other thin sheet.

2. The plate of claim 1, wherein: one of the thin sheets is axially fixed with a screw, and the other thin sheet is provided with a strip-shaped hole close to the edge; when the two sheets rotate relatively, the screw moves along the strip-shaped hole; when the two sheets are relatively static, the two sheets are fixedly connected through the threads of the screw.

3. The plate of claim 2, wherein: each thin slice is provided with a central hole which can be sleeved on the lining, and each vent hole is an arc-shaped hole which takes the circle center of the central hole as the circle center.

4. The plate of claim 3, wherein: the circumferential distance between two adjacent arc-shaped holes is larger than or equal to the arc length of the arc-shaped holes.

5. The plate of claim 4, wherein: each slice is in a square shape, and the square shape is a symmetrical square shape taking the center of a center hole as the center.

6. The plate of claim 5, wherein: one set of opposite two sides of each sheet are linear.

7. The plate of claim 5, wherein: the other group of opposite two sides of each slice are in an arc shape taking the center of the center hole as the center of a circle.

8. The plate of claim 3, wherein: one end of the bushing is provided with a flange for blocking the thin sheets from moving axially, a threaded hole is axially formed in the flange, and the screw penetrates through the two thin sheets to be in threaded connection with the threaded hole.

9. The plate of claim 8, wherein: and a ring groove is formed on the bushing, and the thin sheet is clamped in the ring groove through the central hole.