CN209840813U

CN209840813U - Fin and heat exchanger

Info

Publication number: CN209840813U
Application number: CN201920519243.4U
Authority: CN
Inventors: 章兵; 刘杰; 杨明鹤
Original assignee: Hefei Snowky Electric Co Ltd
Current assignee: Hefei Snowky Electric Co Ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2019-12-24
Anticipated expiration: 2029-04-17

Abstract

The utility model provides a fin and heat exchanger, fin include the fin body, the equipartition has seted up a plurality of through-holes that are used for suit parent tube on the fin body, transversely is equipped with protruding knurling group along the horizontal direction between the adjacent through-hole, protruding knurling group includes protruding knurling and lower knurling, protruding knurling and lower knurling all from the surface uplift of fin body, horizontal one side all forms the opening; the heat exchanger comprises a base pipe and the fin body. The utility model discloses a to the institutional advancement of fin, increased the friction between fluid and the fin, increased the disturbance, make the heat transfer effect show the enhancement.

Description

Fin and heat exchanger

Technical Field

The utility model belongs to the technical field of fin tubular heat exchanger, concretely relates to fin and contain heat exchanger of this fin.

Background

The finned tube heat exchanger is one of the most widely used heat exchange devices in gas and liquid exchangers, and is the most common heat exchanger in refrigerators. As shown in figure 1, the finned tube heat exchanger achieves the purpose of enhancing heat transfer by additionally arranging fins 2 on a common base tube 1.

In order to greatly increase the heat exchange area, the prior art mostly adopts plate-fin heat exchange fins in a flat plate shape, and the following defects are mainly existed: the plate-fin type fins are smooth, the flowing direction of fluid is parallel to the fins, when the fluid flows through the plate-fin type fins, the flowing characteristic is in a laminar flow state, the friction between the fluid and the fins is small, the disturbance is small, and the fins and the fluid can not exchange heat fully.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the disadvantages of the prior art, and to provide a fin capable of exchanging heat with fluid (such as flowing air) sufficiently.

The utility model also provides a heat exchanger that contains this fin.

The utility model discloses a first aspect provides a fin, including the fin body, a plurality of through-holes that are used for the suit parent tube are seted up to the equipartition on the fin body, transversely are equipped with protruding knurling group between the adjacent through-hole on the horizontal direction, protruding knurling group is including last protruding knurling and lower knurling, and the surface uplift of fin body is all followed to last protruding knurling and lower knurling, and horizontal one side all forms the opening.

The second aspect of the utility model provides a heat exchanger that contains this fin, it includes parent tube and above-mentioned fin body.

The utility model discloses a to the institutional advancement of fin, increased the friction between fluid and the fin, increased the disturbance, make the heat transfer effect show the enhancement.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1 is a schematic structural diagram of a finned tube heat exchanger in the prior art;

FIG. 2 is a schematic structural view of a fin of the present invention;

fig. 3 is a schematic structural diagram of the heat exchanger of the present invention.

Detailed Description

Referring to fig. 2, the utility model provides a pair of fin, including fin body 3, a plurality of through-holes 4 that are used for the suit parent tube are seted up to the equipartition on the fin body 3, transversely are equipped with protruding knurling group 5 between the adjacent through-hole 4 on the horizontal direction, protruding knurling group 5 includes protruding knurling 51 and lower knurling 52 down, and protruding knurling 51 and lower knurling 52 all form opening 53 from the surperficial uplift of fin body 3 down, horizontal one side. (the surface bulges comprise bulges on the same surface or bulges on two surfaces respectively, and the transverse side comprises the opposite or opposite side of the upper convex pattern 51 and the lower convex pattern 52. the corresponding figure of the embodiment is that the upper convex pattern 51 and the lower convex pattern 52 are bulges on the same surface of the fin body 3 and the opposite side is provided with an opening 53.)

The working principle is as follows: the fin body 3 is provided with a plurality of convex embossing groups, so that the heat exchange area of the fin body 3 is increased, the fin body is superior to a straight fin (namely, a plate-fin heat exchange fin in the background technology) in the aspect of heat exchange, in addition, flowing air continuously changes the direction, more air washes the cross section of each convex embossing, so that turbulent flow is increased, and the heat exchange effect is obviously enhanced.

In this embodiment, the number of the upper convex patterns 51 is at least three, and the lengths of the upper convex patterns 51 are sequentially reduced from the distance from the lower convex patterns 52 to the direction close to the lower convex patterns 52; the lower convex embossments 52 are the same in number as the upper convex embossments 51, and the length of the lower convex embossments 52 decreases in the direction from the distance from the upper convex embossments 51 to the distance from the upper convex embossments 51, and is the same as the length of the upper convex embossments 51. The purpose is that at least three convex patterns 51 and 52 make the area of the fin body 3 occupied by the convex pattern groups large enough, and ensure the reliable realization of heat exchange and turbulent flow effects.

In this embodiment, the fin body 3 is provided with wavy embossments 6 on both sides in the length direction. Aim at, the heat transfer area of increase fin body 3 that can be further to make the air that flows realize the abrupt change of speed in wave pattern 6's crest and trough department, further increase the vortex effect, make the heat transfer effect better.

In the embodiment, the through hole 4 is provided with a wide covered edge 7 along the hole edge in an outward turning way, and the wide covered edge 7 is tightly attached to and wrapped on the outer wall of the base pipe 1. Aim at, increase area of contact between fin body 3 and the parent tube 1, improve the heat transfer effect, connection structure's fastness also improves to some extent in addition, makes product property ability more reliable and stable.

In this embodiment, the fin body 3 may be made of a metal material adopted by a heat exchanger fin in the prior art, and is preferably made of a synthetic material (non-toxic, environment-friendly, and highly corrosion-resistant) with good thermal conductivity and ductility.

Referring to fig. 3, the present invention also provides a heat exchanger with the fin, which includes a base tube 1 and the fin body 3. In the drawings of this embodiment, the plurality of groups of fin bodies 3 are arranged in parallel at intervals, and the base tube 1 is vertically inserted into the base tube, it is easily conceivable that, by dividing the fin bodies 3, one base tube 1 is inserted into a heat exchanger formed by a plurality of divided fin bodies 3, or by changing the length and shape of the base tube 1, and the like, the heat exchanger can be adjusted according to actual needs, and therefore, the present embodiment is not described in detail.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a fin, includes the fin body, a plurality of through-holes that are used for suit parent tube, its characterized in that are seted up to the equipartition on the fin body: protruding embossing pattern group transversely is equipped with between the adjacent through-hole along the horizontal direction, protruding embossing pattern group is including protruding embossing pattern and lower embossing pattern, and protruding embossing pattern and lower embossing pattern all bulge from the surface of fin body, and horizontal one side all forms the opening.

2. The fin of claim 1, wherein: the number of the upper convex patterns is at least three, and the length of the upper convex patterns is sequentially reduced from the direction far away from the lower convex patterns to the direction close to the lower convex patterns; the number of the lower convex patterns is the same as that of the upper convex patterns, the length of the lower convex patterns is sequentially reduced from the direction far away from the upper convex patterns to the direction near the upper convex patterns, and the length of the lower convex patterns is respectively corresponding to the upper convex patterns.

3. The fin according to claim 1 or 2, wherein: wave-shaped embossing patterns are arranged on two sides of the fin body along the length direction.

4. The fin according to claim 1 or 2, wherein: the through hole is provided with a wide wrapping edge along the hole edge in an outward turning mode, and the wide wrapping edge is tightly attached to and wraps the outer wall of the base pipe.

5. The utility model provides a heat exchanger, includes that parent tube and cover establish the fin on this parent tube, its characterized in that: the fin is the fin according to any one of claims 1 to 4.