CN205332611U

CN205332611U - Anti blocking type finned tube heat exchanger

Info

Publication number: CN205332611U
Application number: CN201521131578.7U
Authority: CN
Inventors: 李安长; 李金胜; 何益军; 吴同松
Original assignee: Zibo Dec Air Conditioning Co Ltd
Current assignee: Zibo Dec Air Conditioning Co Ltd
Priority date: 2015-12-29
Filing date: 2015-12-29
Publication date: 2016-06-22
Anticipated expiration: 2025-12-29

Abstract

The utility model belongs to the indirect heating equipment field, concretely relates to anti blocking type finned tube heat exchanger, including a plurality of vertical parallel arrangement's fin with run through the heat exchange tube in the fin, fin outside -in sets up two sets ofly at least, outside -in, each distance of the fins who organizes the fin reduces gradually. Finned tube heat exchanger in, because it is great relatively to lie in a set of distance of the fins in the outside, even consequently frost, also can not be easily with the big clearance shutoff between the fin, prevented effectively promptly that the fin large tracts of land is by the phenomenon of frost layer shutoff, and partly outside air frosts when flowing through the fin of intermediate level or inlayer, the problem of frosting has completely effectively been avoided outside the fin, the messenger is frosted evenly, be favorable to timely homogenization frost simultaneously, it is effectual to change the frost, finally ensure finned tube heat exchanger's heat transfer effect.

Description

Block-proof type fin-tube type heat exchanger

Technical field

This utility model relates to a kind of block-proof type fin-tube type heat exchanger, belongs to field of heat exchange equipment。

Background technology

The fin that fin-tube type heat exchanger mainly includes some parallel longitudinal arrangements and the heat exchanger tube being applied in fin, in traditional heat exchangers, spacing of fin between adjacent two fins is equidistant, it is generally 2.2mm, this kind of heat exchanger is often used as the vaporizer of air-conditioning, when under clammy environment, (winter such as northern China) heats with air-conditioning, easily frosting on fin, and the outside of fin (i.e. the windward side of heat exchanger) easily frosting, inner side not easily frosting, owing to spacing of fin is less, in the lasting heating operations of air-conditioning, phenomenon and not easily defrost that fin large area blocked by frost layer often occur, sometimes also can freeze, affect the heat transfer effect of heat exchanger, also can affect the heating efficiency of air-conditioning simultaneously。

Utility model content

According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provides a kind of easy defrost, be prevented from fin large area by frost layer closure, the block-proof type fin-tube type heat exchanger guaranteeing heat transfer effect。

Block-proof type fin-tube type heat exchanger described in the utility model, including fin and the heat exchanger tube being applied in fin of some parallel longitudinal arrangements, fin ecto-entad is at least provided with two groups；Ecto-entad (namely from the windward side of fin-tube type heat exchanger to its lee face), each spacing of fin organizing fin is gradually reduced。

So, on the one hand, the spacing of fin of outermost fin is relatively large, even if frosting, without blocking the wide arc gap between fin easily, on the other hand, the frosting when flowing through the fin in intermediate layer or internal layer of a part of outside air, effectively prevent the problem of frosting outside fin completely, make frosting uniform, be conducive to uniformly defrost in time simultaneously。

Preferably, the spacing of fin being positioned at outermost one group of fin is 2.4mm～4.0mm；Considering production cost, make other factors such as assembly technology, the spacing of fin being positioned at one group of fin of inner side can not be too small, the preferred 1.4mm～2.2mm of this utility model。

Fin outward flange in the heat exchanger of traditional air conditioner off-premises station is 6～9mm with the distance of the outermost heat exchanger tube of installation on this fin, under clammy environment, owing to outside air temperature is low, therefore, the outermost heat exchanger tube that the outward flange of fin is installed on this fin is more remote, frost is more difficult to melt, and is namely less susceptible to defrosting。Therefore this utility model adopt the method for the spacing reducing fin outward flange and outermost heat exchanger tube to improve defrost effect。Concrete preferably below scheme:

In one group of fin, on the windward side of fin-tube type heat exchanger, the distance L between the outward flange of fin and the outermost heat exchanger tube installed on this fin is not more than the 5/6 of the spacing of fin of this group fin。

This utility model is compared with prior art had the beneficial effect that

In fin-tube type heat exchanger described in the utility model, relatively large owing to being positioned at outermost one group of spacing of fin, even if therefore frosting, without being blocked by the wide arc gap between fin easily, namely effectively prevent the phenomenon that fin large area is blocked by frost layer, and the frosting when flowing through the fin in intermediate layer or internal layer of a part of outside air, effectively prevent the problem of frosting outside fin completely, being conducive to uniformly defrost in time, defrost is effective, finally guarantees the heat transfer effect of fin-tube type heat exchanger。

Accompanying drawing explanation

Fig. 1 is the top view of fin arrangement in this utility model；

Fig. 2 is the structural representation that fin coordinates with heat exchanger tube。

In figure: 1, fin；2, it is positioned at outermost one group of fin；3, one group of fin of inner side it is positioned at；4, heat exchanger tube。

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:

As shown in Figure 1, 2, block-proof type fin-tube type heat exchanger described in the utility model includes the fin 1 of some parallel longitudinal arrangements and the heat exchanger tube 4 being applied in fin 1, and fin 1 ecto-entad (namely from the windward side of fin-tube type heat exchanger to its lee face) arranges 3 groups；Ecto-entad, each spacing of fin organizing fin is gradually reduced；The spacing of fin being positioned at outermost one group of fin 2 is 2.4mm～4.0mm；Considering production cost, make other factors such as assembly technology, the spacing of fin being positioned at one group of fin 3 of inner side can not be too small, and in the present embodiment, the spacing of fin being positioned at one group of fin 3 of inner side is 1.4mm～2.2mm。So, on the one hand, the spacing of fin being positioned at outermost one group of fin 2 is relatively large, even if frosting, without blocking the wide arc gap between fin 1 easily, on the other hand, the frosting when flowing through the fin 1 of intermediate layer or internal layer of a part of outside air, effectively prevent the problem of frosting outside fin 1 completely, make frosting uniform, be conducive to uniformly defrost in time simultaneously。

Fin 1 outward flange in the heat exchanger of traditional air conditioner off-premises station is 6～9mm with the distance of the outermost heat exchanger tube 4 of installation on this fin, under clammy environment, owing to outside air temperature is low, therefore, the outward flange distance heat exchanger tube 4 of fin 1 is more remote, and frost is more difficult to melt, and is namely less susceptible to defrosting。Therefore this utility model adopts the method for the spacing reducing the outermost heat exchanger tube 4 installed on fin 1 outward flange and this fin 1 to improve defrost effect, is embodied in following two embodiment:

Embodiment one:

The spacing of fin being positioned at outermost one group of fin 2 is 2.4mm, and in this group fin, on the windward side of fin-tube type heat exchanger, the distance L between fin 1 outward flange and the outermost heat exchanger tube 4 installed on this fin 1 is 2.0mm。

Embodiment two:

The spacing of fin being positioned at outermost one group of fin 2 is 4.0mm, and in this group fin, on the windward side of fin-tube type heat exchanger, the distance L between fin 1 outward flange and the outermost heat exchanger tube 4 installed on this fin 1 is 2.8mm。

Both the above embodiment, in actual application, can both break the frost layer attachment on fin 1, and thorough defrost is water, ensures that the defrost effect of fin 1。

Claims

1. a block-proof type fin-tube type heat exchanger, including the fin (1) of some parallel longitudinal arrangements and the heat exchanger tube (4) that is applied in fin (1), it is characterised in that: fin (1) ecto-entad is at least provided with two groups；Ecto-entad, the spacing of fin respectively organizing fin (1) is gradually reduced。

2. block-proof type fin-tube type heat exchanger according to claim 1, it is characterised in that: the spacing of fin being positioned at outermost one group of fin (2) is 2.4mm～4.0mm；The spacing of fin being positioned at one group of fin (3) of inner side is 1.4mm～2.2mm。

3. block-proof type fin-tube type heat exchanger according to claim 1 and 2, it is characterized in that: in one group of fin, the distance L between the outward flange of fin (1) and the upper outermost heat exchanger tube (4) installed of this fin (1) is not more than the 5/6 of the spacing of fin of this group fin。