CN206572736U

CN206572736U - Finned tube type heat exchanger and air conditioner with same

Info

Publication number: CN206572736U
Application number: CN201720126751.7U
Authority: CN
Inventors: 符众; 王银春
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-02-10
Filing date: 2017-02-10
Publication date: 2017-10-20
Anticipated expiration: 2027-02-10

Abstract

The utility model provides a pair of fin tubular heat exchanger, including heat exchange tube and fin, wherein, set up at least one row of fin hole and many gaps along length direction on the fin, many gaps are along the outside of tubes heat transfer medium flow direction is "S" shape, "(" shape or ")" arbitrary one or several kinds of shape in the shape arrange. The utility model discloses a fin tubular heat exchanger, many gaps are "S" shape along the outside of tubes heat transfer medium flow direction, and the arbitrary one or several kinds of shape in the "(" shape or ")" shape are arranged to make heat transfer medium can follow and be "S" shape, "(" shape or ")" shape route loop flow, can obviously reduce heat transfer medium' S windage, and can destroy the boundary layer on fin surface, improve the heat transfer effect.

Description

Finned tube type heat exchanger and air conditioner with same

Technical Field

The utility model relates to a heat exchanger technical field especially relates to a fin tubular heat exchanger and have its air conditioner.

Background

The fin of traditional fin tubular heat exchanger for air conditioner mainly uses the structure of shutter type's windowing piece, and the heat exchanger takes place the falling piece easily when expand tube, bend, transport, and the anti-lodging ability is low to shutter type's windowing piece structure windage is great, influences the heat transfer effect of heat exchanger, consequently only is used for on the outdoor unit condenser of indoor evaporimeter or high plate distance generally, and application range receives the limitation.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a fin tube type heat exchanger and an air conditioner having the same, aiming at the problem that the heat exchange effect of the heat exchanger is affected by the fin of the louver type window opening plate structure.

The utility model provides a pair of fin tubular heat exchanger, including heat exchange tube and fin, wherein, set up at least one row of fin hole and many gaps along length direction on the fin, many gaps are along the outside of tubes heat transfer medium flow direction is "S" shape, "(" shape or ")" arbitrary one or several kinds of shape in the shape arrange.

In one embodiment, the slits include a first inclined slit and a second inclined slit, and the first inclined slit and the second inclined slit are arranged in a "(" or ") shape along the flowing direction of the heat exchange medium outside the tube.

In one embodiment, the slits further include a horizontal slit parallel to the arrangement direction of the fin holes and disposed between the first slit and the second slit.

In one embodiment, the fin is provided with a fin hole surrounding edge along the fin hole.

In one embodiment, the fin hole peripheral edge is in a rounded structure at the contact part with the fin hole.

In one embodiment, a flanging extending towards the periphery of the opening is arranged at the opening of the fin hole surrounding edge, and a fillet structure is formed between the flanging and the fin hole surrounding edge.

In one embodiment, a slit surrounding edge is arranged along the slit surrounding.

In one embodiment, the fin hole peripheral edge is higher than the slit peripheral edge.

In one embodiment, the number of rows of fin holes formed in the fin along the length direction is 1 row to 3 rows.

In one embodiment, the fins are bridge plate slotted fins.

The utility model also provides an air conditioner, wherein, the air conditioner includes as above fin tubular heat exchanger.

The utility model discloses a fin tubular heat exchanger, many gaps are "S" shape along the outside of tubes heat transfer medium flow direction, and the arbitrary one or several kinds of shape in the "(" shape or ")" shape are arranged to make heat transfer medium can follow and be "S" shape, "(" shape or ")" shape route loop flow, can obviously reduce heat transfer medium' S windage, and can destroy the boundary layer on fin surface, improve the heat transfer effect.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic view of a fin structure of a fin-tube heat exchanger of the present invention;

FIG. 2 is an enlarged cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

wherein,

10-fin holes; 11-fin edge; 12-flanging; 20-a gap; 21-a first inclined slit; 22-horizontal slit; 23-a second inclined slit; 24-a slit surrounding edge;

p-pitch of holes; n-number of holes in a single row; m-number of columns; s-row spacing; d-fin hole diameter; d' -the diameter of the flanging; h-the height of the surrounding edge of the fin hole; h-the height of the gap surrounding edge; w-total gap width; t-fin thickness; l-the first or second slanted gap spacing; the angle between the alpha-gap and the flowing direction of the heat exchange medium is included.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following embodiments are described in detail with reference to the accompanying drawings, and the fin tube heat exchanger and the air conditioner with the same are described in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 3, a preferred embodiment of the finned tube heat exchanger of the present invention includes heat exchange tubes and fins, two rows of fin holes 10 and a plurality of slits 20 are formed in the fins along the length direction, the two rows of fin holes 10 are alternately formed in the fins, and the plurality of slits 20 are disposed in the spaces between the fin holes 10 and arranged in an S shape along the flow direction of the heat exchange medium outside the tubes.

The plurality of gaps 20 are arranged in an S shape along the flowing direction of the heat exchange medium outside the tube, so that the heat exchange medium can circularly flow along the S-shaped path, the flowing channel of the heat exchange medium is improved, the heat exchange efficiency is fully improved, the wind resistance of the heat exchange medium can be obviously reduced, the boundary layer on the surface of the fin can be damaged, and the heat exchange effect is improved.

In other embodiments, for example, a row of fin holes 10 and a plurality of slits 20 are formed in the fin along the length direction, the plurality of slits 20 are arranged in one or two of the "(" shape or ")" shapes along the flow direction of the heat exchange medium outside the tube, that is, the plurality of slits 20 are symmetrically arranged according to the arrangement direction of the fin holes 10, so that the heat exchange medium can circularly flow along the "(" shape or ")" path, the wind resistance of the heat exchange medium can also be reduced, the boundary layer on the surface of the fin can be broken, and the heat exchange effect is improved.

In other embodiments, for example, three or more rows of fin holes 10 and a plurality of slits 20 are formed in the fin along the length direction, and the plurality of slits 20 are arranged in a shape of a combination of a plurality of "S" shapes and "(" or ")" shapes along the flow direction of the heat exchange medium outside the tube, so that the heat exchange medium can circularly flow along a plurality of "S" shapes and "(" or ")" paths, the wind resistance of the heat exchange medium can be reduced, the boundary layer on the surface of the fin can be damaged, and the heat exchange effect is improved.

As shown in fig. 1 and 3, the slits 20 of the fin holes 10 in each row are divided into a first inclined slit 21, a second inclined slit 23, and a horizontal slit 22. Wherein the first inclined slits 21 and the second inclined slits 23 are arranged in a "(" or ") shape. The horizontal slit 22 is parallel to the arrangement direction of the fin holes 10 and is disposed between the first inclined slit 21 and the second inclined slit 23. Be equipped with horizontal gap 22 between first inclined gap 21 and second inclined gap 23, on the one hand can improve the heat transfer intensity of heat transfer medium when horizontal gap 22 flows through, and on the other hand can improve the intensity of fin in this direction, reduces the falling piece of fin in the production process, improves fin lodging resistance ability.

As shown in fig. 2, a fin hole surrounding edge 11 is disposed around the fin hole 10, and a contact portion between the fin hole surrounding edge 11 and the fin hole 10 is a rounded corner structure; the opening part of the fin hole surrounding edge 11 is provided with a flanging 12 extending to the periphery of the opening, and a fillet structure is formed between the flanging 12 and the fin hole surrounding edge 11. The fillet structure is convenient for install the heat exchange tube on the one hand, strengthens the relative fixed strength of heat exchange tube and fin, and on the other hand also can strengthen the fixed strength who encloses edge and fin.

As an optional implementation, the fin of an embodiment of the present invention is a bridge fin type slotted fin. Wherein a slot surrounding edge 24 is arranged around the slot 20. The height of the gap surrounding edge 24 of the first inclined gap 21, the second inclined gap 23 and the horizontal gap 22 can be kept consistent, the area of the heat exchange surface is increased by the gap surrounding edge 24, and the heat exchange effect of the heat exchange medium can be improved when the heat exchange medium flows through the gap surrounding edge 24. Further, the fin hole peripheral edge 11 may have a height higher than that of the slit peripheral edge 24.

Gap 20's position, length, width, quantity, height, and heat transfer medium flow direction contained angle and interval, the resistance that receives when flowing to improving heat transfer medium, the negative surface layer that destroys the fin surface all have certain influence, the utility model provides a fin tubular heat exchanger's embodiment fin parameter preferred range is as shown in table 1.

The utility model discloses in, many gaps 20 are arranged along the arbitrary one or several kinds of shapes in the outside pipe heat transfer medium flow direction in "S" shape, "(" shape or ")" shape, set up the position between fin hole 10 to make heat transfer medium can follow and be "S" shape, "(" shape or ")" shape route loop flow, reduce heat transfer medium' S windage, destroy the boundary layer on fin surface, improve heat transfer effect.

As an alternative embodiment, between two adjacent fin holes 10 in the same row, three first inclined slits 21 arranged in parallel are inclined to one side and form an angle α of 30 ° with the flow direction of the heat exchange medium, and three second inclined slits 23 arranged in parallel are inclined to the other side and form an angle α of 30 ° with the flow direction of the heat exchange medium. A horizontal slit 22 is opened between the three first inclined slits 21 and the second inclined slit 23 and is located on the center line of the fin holes 10 in the same row. The length of the first inclined slit 21 and the second inclined slit 23 may be 6mm, the width thereof may be 2mm, and the distance between the center lines of the two parallel first inclined slits 21 or the two parallel second inclined slits 23 may be 4 mm. The horizontal slit 22 may be 9mm in length and 3mm in width. The height of the slit envelope 24 may be 1.4 mm. The total slot width W refers to the total width in the slot 20 corresponding to the same row of fin holes 10 and may be, for example, 17.4 mm.

The fin thickness T represents the linear distance between two surfaces of the fin, the pitch P represents the distance between the centers of two fin holes 10 in the same row of fin holes 10, the row pitch S represents the vertical distance between the center lines of two rows of fin holes 10, and the diameter D of the fin holes 10 is related to the outer diameter of the heat exchange tube. The utility model discloses a fin thickness T, pitch P, row apart from S, fin hole 10 diameter D, single row hole number N and row number M of fin tubular heat exchanger can set for according to actual need. Accordingly, the burring diameter D' is adjusted according to the size of the diameter D of the fin hole 10.

TABLE 1 Fin parameters and preferred ranges for embodiments of finned tube heat exchangers

Fin parameter	Preferred ranges
		Fin length P × N (mm)	660～762
Fin width M × S (mm)	19.05～22
		Pitch P (mm)	22～25.4
Number of holes in single row N (number)	30
		Number of rows of fins (M)	1～3
Array distance S (mm)	19.05～22
		Diameter of fin hole D (mm)	8.24～9.83
Diameter of turned edge D' (mm)	9.61～11.2
		Height of fin hole edge H (mm)	1.6～2.2
Height h (mm) of gap surrounding edge)	1.4～2.0
		Total gap width W (mm)	17.39
Fin thickness T (mm)	0.1～0.12
		First inclined gap or second inclined gap interval L (mm)	4
The included angle between the gap and the flowing direction of the heat exchange medium is α (°)	30～60

Further, the utility model also provides an air conditioner is equipped with above-mentioned fin tubular heat exchanger in the air conditioner. In an air conditioner, the fin-tube heat exchanger may be used as a condenser or an evaporator.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The finned tube heat exchanger comprises a heat exchange tube and fins and is characterized in that at least one row of fin holes (10) and a plurality of gaps (20) are formed in the fins along the length direction, and the gaps (20) are arranged in any one or more of an S shape and an S shape along the flowing direction of a heat exchange medium outside the tube.

2. Finned tube heat exchanger according to claim 1, wherein the slits (20) comprise a first inclined slit (21), a second inclined slit (23), the first inclined slit (21) and the second inclined slit (23) being arranged in a "(" or ")" shape along the flow direction of the heat exchange medium outside the tubes.

3. The finned tube heat exchanger according to claim 2, wherein the slits (20) further comprise horizontal slits (22), the horizontal slits (22) being parallel to the arrangement direction of the fin holes (10) and being disposed between the first inclined slits (21) and the second inclined slits (23).

4. Finned tube heat exchanger according to claim 1, wherein the fins are surrounded along the fin holes (10) by fin hole surrounding edges (11).

5. The finned tube heat exchanger of claim 4, wherein the fin hole peripheral edges (11) are rounded at the contact with the fin holes (10).

6. The finned tube heat exchanger as claimed in claim 4, wherein the fin hole surrounding edge (11) is provided with a flanging (12) extending to the periphery of the opening at the opening, and a fillet structure is formed between the flanging (12) and the fin hole surrounding edge (11).

7. Finned tube heat exchanger according to claim 4, wherein a slit rim (24) is provided around the slit (20).

8. Finned tube heat exchanger according to claim 7, wherein the fin hole peripheral edge (11) is higher than the slit peripheral edge (24).

9. The finned tube heat exchanger as claimed in any one of claims 1 to 8, wherein the number of rows of fin holes (10) formed in the fin in the longitudinal direction is 1 to 3.

10. The finned tube heat exchanger of any one of claims 1 to 8 wherein the fins are bridge plate slotted fins.

11. An air conditioner characterized in that it comprises a finned tube heat exchanger as claimed in any one of claims 1 to 10.