CN202393282U

CN202393282U - Fin-tube type fin heat exchanger

Info

Publication number: CN202393282U
Application number: CN2011204644866U
Authority: CN
Inventors: 李江; 秦振环
Original assignee: Gree Zhengzhou Electric Appliances Co Ltd
Current assignee: Gree Zhengzhou Electric Appliances Co Ltd
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2012-08-22
Anticipated expiration: 2021-11-21

Abstract

The utility model discloses a fin-tube type fin heat exchanger which comprises a plurality of heat exchange tubes and a row of slotted fins, wherein each fin is provided with at least a row of installing holes for assembling the heat exchange tubes and a plurality of slots along the length direction of the fin; and along the flowing direction of a heat exchange medium outside a tube, the width of the slot at the front part of the fin is greater than the width of the slot at the rear part of the fin, and/or the number of the slots at the front part of the fin is less than the number of the slots at the rear part of the fin. According to the fin-tube type fin heat exchanger disclosed by the utility model, through changing the width of the slot, i.e. the width of the slot at the front part of the fin is greater than the width of the slot at the rear part of the fin and/or the number of the slots at the front part of the fin is less than the number of the slots at the rear part of the fin, the wind resistance of the front row of the heat exchanger can be effectively reduced, and the heat-exchange temperature difference of the rear row can be increased, thereby enhancing the overall heat exchange effect of the heat exchanger.

Description

A kind of fin-tube type finned heat exchanger

Technical field

The utility model relates to a kind of heat-exchange apparatus, especially a kind of fin-tube type finned heat exchanger.

Background technology

In recent years, along with the raising of the fierceness of air-conditioning market competition and people's energy consciousness, air-conditioning equipment constantly develops to miniaturization, economical, high energy efficiency direction.The fin-tube type finned heat exchanger is a heat exchanger structure form the most frequently used in the air-conditioning, and the heat exchange of the outer fin of pipe then is the principal element of restriction heat exchanger efficiency.

The slitted fin that traditional single row or multiple rows heat exchanger is adopted mainly contains window and bridge sheet, and general symmetry is cracked and bar seam width D 0 (below be referred to as the wide D0 of seam) identical (as shown in Figure 1).If stitch wide too narrowly, the density of promptly cracking is big, and then windage is big and back row's heat exchange is poor, and then the whole heat exchange effect of influence; If stitch wide too widely, the density of promptly cracking is little, can not reach good heat exchange effect again.

Summary of the invention

The utility model technical problem to be solved is, a kind of fin-tube type finned heat exchanger is provided, and the windage of its fin front portion is little, and the heat transfer temperature difference at fin rear portion is big, to strengthen the whole heat exchange effect of heat exchanger.

First technical scheme that the utility model solves the problems of the technologies described above employing is: a kind of fin-tube type finned heat exchanger; It comprises that many heat exchanger tubes and arrange the seam fin; Be provided with installing hole and the many rules seam that at least one row is used to assemble said heat exchanger tube at every its length direction of fin upper edge; Along heat transfer outside a tube media flow direction, the width of the anterior bar seam of said fin is greater than the width of its rear portion bar seam, and/or the quantity of the anterior bar seam of said fin is less than the quantity of its rear portion bar seam.

Preferably; Said fin is bridge chip slitted fin or window formula slitted fin; It comprises substrate and bridge sheet or window; The width of anterior bridge sheet of said fin or window is greater than the width of its rear portion bridge sheet or window, and/or the quantity of anterior bridge sheet of said fin or window is less than the quantity of its rear portion bridge sheet or window.

Preferably, the width of the said substrate between adjacent two said bridge sheets or the said window equates that perhaps, the width of the said substrate between adjacent two said bridge sheets or the said window reduces along heat transfer outside a tube media flow direction gradually.

Second technical scheme that the utility model solves the problems of the technologies described above employing is: a kind of fin-tube type finned heat exchanger; It comprises that many heat exchanger tubes and at least two arrange the seam fin; Be provided with installing hole and the many rules seam that a row is used to assemble said heat exchanger tube at every its length direction of fin upper edge; Along heat transfer outside a tube media flow direction; The width that the width of front-seat fin bar seam stitches greater than back row's fin bar in the said fin of adjacent two rows, and/or the quantity of front-seat fin bar seam is less than the quantity of back row's fin bar seam.

Preferably; Said fin is bridge chip slitted fin or window formula slitted fin; It comprises substrate and bridge sheet or window; Along heat transfer outside a tube media flow direction, the width of front-seat fin bridge sheet or window is greater than the width of back row's fin bridge sheet or window in the said fin of adjacent two rows, and/or the quantity of front-seat fin bridge sheet or window is less than the quantity of back row's fin bridge sheet or window.

Preferably, the width of the said fin of every row equates that perhaps, the width of the said fin of every row reduces along heat transfer outside a tube media flow direction gradually.

Preferably, in the said fin of every row, the width of every said seam equates that perhaps, the width of every said seam reduces along heat transfer outside a tube media flow direction gradually.

Preferably, said fin is an integral fins or is combined by the single fin more than two.

Compared with prior art, the utility model has the advantages that:

The fin-tube type finned heat exchanger of the utility model; Through changing the width of bar seam; Even the width that the width of the anterior bar seam of fin stitches greater than its rear portion bar, and/or make the quantity of the quantity of the anterior bar seam of fin less than its rear portion bar seam, just can effectively reduce the front-seat windage of heat exchanger; Increase back row's heat transfer temperature difference, and then strengthen the whole heat exchange effect of heat exchanger.

Description of drawings

Fig. 1 is the local schematic top plan view of traditional fin-tube type finned heat exchanger fin;

Fig. 2 is the local schematic top plan view of fin among the utility model embodiment 1;

Fig. 3 is the rotation profile along A-A line among Fig. 2;

Fig. 4 is the local schematic top plan view of fin among the utility model embodiment 2;

Fig. 5 is the local schematic top plan view of fin among the utility model embodiment 3;

Fig. 6 is the local schematic top plan view of fin among the utility model embodiment 4.

The specific embodiment

Embodiment to the utility model is elaborated below in conjunction with accompanying drawing:

Embodiment 1

Fig. 2 and shown in Figure 3 be the structural representation of the fin of the utility model embodiment 1; In fin 10 upper edges its length direction be provided with installing hole 101 that two rows are used to assemble heat exchanger tube and many rules seam 102,103 ..., 109; Fin 10 in the present embodiment is a bridge chip fin, its by substrate 110,111 ..., 115 and bridge sheet 102,103 ..., 109 form.Bridge sheet 102,103 ..., 109 be positioned at fin 10 the same side; Along F direction (being heat transfer outside a tube media flow direction); The width D 1 of front-seat fin 10 bridge sheets 102,103,104 greater than back row's fin 10 bridge sheets 105,106 ..., 109 width D 2, and the quantity of front-seat fin 10 bridge sheets 102,103,104 less than back row's fin 10 fins 10 bridge sheets 105,106 ..., 109 quantity.And; The width of front-seat substrate 110,111 is more than or equal to the width of back row's substrate 112,113,114,115; The width of substrate 110 is more than or equal to the width of substrate 111; The width of said substrate 112,113,114,115 is respectively D112, D113, D114, D115, wherein D112≤D113≤D114≤D115.

No matter the utility model heat exchanger still is that condenser uses and all has same effect and operation principle as evaporimeter.Air gets into along the F direction with certain speed, carries out heat exchange with fin 10.On the one hand; Because the wider width of front-seat bridge sheet, the density of cracking is little, when air is flowed through bridge sheet 102,103,104; Make front-seat temperature boundary layer disturbance less; Front-seat fin 10 heat exchange of former relatively traditional fin are poor slightly, but increased the heat transfer temperature difference of air with back row's heat exchanger simultaneously, effectively strengthened the heat exchange effect of back row's heat exchanger; On the other hand and since air through the front row suffered windage less, make through row's later wind speed bigger, and back row institute to open the bridge sheet narrow and many, effectively destroyed temperature boundary layer, strengthened back row's heat exchange, thereby strengthened the whole heat exchange effect of heat exchanger.

Embodiment 2

As shown in Figure 4; The difference of present embodiment and embodiment 1 is; On fin 10, only be provided with row's installing hole 101 and four rules seam 102,103,104,105, the width D 1 of fin 10 anterior bridge sheets 102 is greater than the width D 2 of its rear portion bridge sheet 103,104,105.And the quantity of fin 10 anterior bridge sheets is less than the quantity of its rear portion bridge sheet.Principle reduces the windage of heat exchanger first half with embodiment 1, and then strengthens the heat exchange of heat exchanger latter half.

Embodiment 3

As shown in Figure 5; The difference of present embodiment and embodiment 1 is; On fin 10, be provided with three row's installing holes 101 and many rule seams, along the F direction, the width of the bridge sheet of opening and the width of substrate are along with the increase of row's number reduces gradually; That is: D1 >=D2 >=D3 >=D4, the negligible amounts of the front-seat bridge sheet of this heat exchanger.

Embodiment 4

As shown in Figure 6, present embodiment is that with the different of embodiment 1 in the present embodiment, the width of front-seat fin 10 is greater than the width of back row's fin 10, i.e. L2＞L1.Principle is with embodiment 1, and numerical simulation result proves, front and rear row fin 10 asymmetric arrangement and fin 10 surface seam sheet width gradually change and arrange and combine, and the heat exchange effect is better.

Above embodiment is the technical scheme of unrestricted the utility model in order to explanation only.Height like each row's bridge sheet can change, and the height of same row's bridge sheet also can change, and perhaps cracks at homonymy not respectively; Fin surface cracks and also can be window, perhaps is window and the combining of bridge sheet; Each arranges refrigerant pipe can be non-pipe, like flat tube or elliptical tube; Each caliber of arranging refrigerant pipe can change, and narrows down along with increasing progressively of number of row but the principle of adhering to all the time is the width that cracks.Therefore, do not break away from any modification or the local replacement of the utility model spirit and scope, all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. fin-tube type finned heat exchanger; It comprises that many heat exchanger tubes and arrange the seam fin; Be provided with installing hole and the many rules seam that at least one row is used to assemble said heat exchanger tube at every its length direction of fin upper edge; It is characterized in that: along heat transfer outside a tube media flow direction, the width of the anterior bar seam of said fin is greater than the width of its rear portion bar seam, and/or the quantity of the anterior bar seam of said fin is less than the quantity of its rear portion bar seam.

2. fin-tube type finned heat exchanger according to claim 1; It is characterized in that: said fin is bridge chip slitted fin or window formula slitted fin; It comprises substrate and bridge sheet or window; Along heat transfer outside a tube media flow direction, the width of anterior bridge sheet of said fin or window is greater than the width of its rear portion bridge sheet or window, and/or the quantity of anterior bridge sheet of said fin or window is less than the quantity of its rear portion bridge sheet or window.

3. fin-tube type finned heat exchanger according to claim 2; It is characterized in that: the width of the said substrate between adjacent two said bridge sheets or the said window equates; Perhaps, the width of the said substrate between adjacent two said bridge sheets or the said window reduces along heat transfer outside a tube media flow direction gradually.

4. fin-tube type finned heat exchanger; It comprises that many heat exchanger tubes and at least two arrange the seam fin; Be provided with installing hole and the many rules seam that a row is used to assemble said heat exchanger tube at every its length direction of fin upper edge; It is characterized in that: along heat transfer outside a tube media flow direction, the width that the width of front-seat fin bar seam stitches greater than back row's fin bar in the said fin of adjacent two rows, and/or the quantity of front-seat fin bar seam is less than the quantity of back row's fin bar seam.

5. fin-tube type finned heat exchanger according to claim 4; It is characterized in that: said fin is bridge chip slitted fin or window formula slitted fin; It comprises substrate and bridge sheet or window; Along heat transfer outside a tube media flow direction, the width of front-seat fin bridge sheet or window is greater than the width of back row's fin bridge sheet or window in the said fin of adjacent two rows, and/or the quantity of front-seat fin bridge sheet or window is less than the quantity of back row's fin bridge sheet or window.

6. fin-tube type finned heat exchanger according to claim 4 is characterized in that: the width of the said fin of every row equates that perhaps, the width of the said fin of every row reduces along heat transfer outside a tube media flow direction gradually.

7. fin-tube type finned heat exchanger according to claim 4 is characterized in that: in the said fin of every row, the width of every said seam equates that perhaps, the width of every said seam reduces along heat transfer outside a tube media flow direction gradually.