CN202648499U - A heat exchanger fin and a heat exchanger core employing the same - Google Patents
A heat exchanger fin and a heat exchanger core employing the same Download PDFInfo
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- CN202648499U CN202648499U CN 201120540592 CN201120540592U CN202648499U CN 202648499 U CN202648499 U CN 202648499U CN 201120540592 CN201120540592 CN 201120540592 CN 201120540592 U CN201120540592 U CN 201120540592U CN 202648499 U CN202648499 U CN 202648499U
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- heat transfer
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Abstract
The utility model relates to a fin for a fuel-liquid heat exchanger and a heat exchanger core employing the fin, specifically to a fin characterized by crosswise-arrangement and stagger-arrangement trapezoid structure. The fin is formed by discontinuous strips arranged in a staggered manner, the cross sections of the strips being trapezoid in shape. Fluid flows in from the direction of the parallel trapezoid section and flows in a rotary manner along the stagger-arrangement fin after entering the fin, and heat transfer is strengthened through destruction of a boundary layer by a short fin, so that the coefficient of heat transfer is increased; and the fluid flows in a rotary manner along the surface of the stagger-arrangement fin and thus the coefficient of heat transfer is further increased. It is proved by tests that the coefficient of heat transfer of the fin is increased by over 10 times compared with a straight fin on the basis of the same Reynolds number, and the volume of a heat exchanger can be further reduced where the pressure drop permits.
Description
Technical field
The utility model relates to a kind of for fuel oil---and the fin of liquid heat-exchanger and the heat exchanger core body that adopts this fin especially have the fin of horizontally-arranged stagger arrangement trapezium structure.
Background technology
In engineering is used; often can run into liquid heat-exchange; such as fuel oil---the cooling fluid heat exchange; usually used heat exchanger is mainly dull and stereotyped rib-type at present; the fin pattern of dull and stereotyped rib-type heating surface has a variety of, and commonly used have straight fin, stagger arrangement fin, louvre type fin, corrugated fin, spike fin, a porous fin.Under the identical Reynolds number condition, the coefficient of heat transfer of stagger arrangement fin increases more than the twice than straight fin, the stagger arrangement fin is widely used in compact heat exchanger, stagger arrangement fin commonly used is the discontinuous slip that straight rectangle fin is processed into staggered weak point, the cross section is rectangle, shown in Figure of description 1, usually fluid flows into from the direction in vertical rectangle cross section, utilize the short fin of stagger arrangement that fluid boundary layer is concatenated to form and destroy augmentation of heat transfer, thereby reach the raising coefficient of heat transfer, dwindle the purpose of heat exchanger volume and weight.But for some liquid heat-exchanger, its heat exchange efficiency requires very high, even reaches 90%, and stagger arrangement fin commonly used can't be realized the requirement of its high heat exchange efficiency.
Summary of the invention
The purpose of this utility model provides the high new type heat exchanger fin of a kind of coefficient of heat transfer.
Technical solution of the present utility model is, a kind of heat exchanger fin is staggered discontinuous slip, and the slip cross section is trapezoidal.
Further, the ratio of slip pitch P and stagger arrangement length L is between 2 and 4.
A kind of dull and stereotyped cold face temperature etc. core body of distributary of above-mentioned heat exchanger fin that adopts is by side plate [1], dividing plate [4], hot limit fin [2], hot banding bar [3], cold banding bar [5], cold limit fin [6] forms, hot limit fin [2] and cold limit fin [6] intersect stacked, middle with dividing plate [4] separation, be respectively arranged with hot banding bar [3], cold banding bar [5] at hot limit fin [2] and cold limit fin [6] runner both sides, in the non-current direction outermost of core body side plate [1] be installed.
Useful technique effect: fluid is flowed into from the direction of parallel trapezoid cross section, fluid enters after the fin along stagger arrangement fin rotational flow, utilizes short fin to destroy the boundary layer and comes augmentation of heat transfer, has improved heat transfer coefficient, fluid can further improve the coefficient of heat transfer along stagger arrangement fin surface rotational flow simultaneously.Test draws, and under identical Reynolds number, the coefficient of heat transfer of this type fin increases more than ten times than straight fin, under the condition that pressure drop allows, can further dwindle heat exchanger volume.
Description of drawings
Fig. 1 is existing heat exchanger rib structure schematic diagram;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the heat exchange core body structural representation, wherein, and 1: side plate, 2: hot limit fin, 3: hot banding bar, 4: dividing plate, 5: cold banding bar, 6: cold limit fin.
The specific embodiment
Below in conjunction with Figure of description the utility model is described in further detail, sees also Figure of description 2～3.
A kind of heat exchanger fin is staggered discontinuous slip, and the slip cross section is trapezoidal.
When the heat exchanger runner is arranged, fluid is flowed into from the direction of parallel trapezoid cross section, shown in Figure of description 2, utilize boundary layer destruction and the fluid of the short fin of stagger arrangement to come augmentation of heat transfer in the rotational flow on fin surface, improve the coefficient of heat transfer, dwindle heat exchanger volume.
The utility model heat exchanger fin adopts the classic wing cutter that rushes of sheet metal to make, and its material that uses is 3A21-O, also can use other to be easy to the punch forming material.
In order better to implement the utility model, the ratio of slip pitch P and stagger arrangement length L can not making in the excessive situation of resistance coefficient, significantly improve coefficient of heat transfer effect between 2 and 4.
The dull and stereotyped cold face temperature etc. core body of distributary is by side plate 1, dividing plate 4, hot limit fin 2, hot banding bar 3, cold banding bar 5, cold limit fin 6 forms, hot limit fin 2 and cold limit fin 6 intersect stacked, middle with dividing plate 4 separations, be respectively arranged with hot banding bar 3, cold banding bar 5 at hot limit fin 2 and cold limit fin 6 runner both sides, in the non-current direction outermost of core body side plate 1 is installed, as shown in Figure 3, hot limit, cold limit heat transfer surface all adopt the trapezoidal fin of the utility model horizontally-arranged stagger arrangement.During application, fluid is flowed into from the direction of parallel trapezoid cross section, fluid enters after the fin along stagger arrangement fin rotational flow, utilize short fin to destroy the boundary layer and come augmentation of heat transfer, improved heat transfer coefficient, fluid can further improve the coefficient of heat transfer along stagger arrangement fin surface rotational flow simultaneously.Test draws, and under identical Reynolds number, the coefficient of heat transfer of this type fin increases more than ten times than straight fin, under the condition that pressure drop allows, can further dwindle heat exchanger volume.
Claims (3)
1. heat exchanger fin, it is characterized in that: be staggered discontinuous slip, the slip cross section is trapezoidal.
2. heat exchanger fin according to claim 1, it is characterized in that: the ratio of slip pitch P and stagger arrangement length L is between 2 and 4.
3. dull and stereotyped cold face temperature etc. core body of distributary that adopts above-mentioned heat exchanger fin, it is characterized in that: by side plate [1], dividing plate [4], hot limit fin [2], hot banding bar [3], cold banding bar [5], cold limit fin [6] forms, hot limit fin [2] and cold limit fin [6] intersect stacked, middle with dividing plate [4] separation, be respectively arranged with hot banding bar [3], cold banding bar [5] at hot limit fin [2] and cold limit fin [6] runner both sides, in the non-current direction outermost of core body side plate [1] be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540592 CN202648499U (en) | 2011-12-20 | 2011-12-20 | A heat exchanger fin and a heat exchanger core employing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540592 CN202648499U (en) | 2011-12-20 | 2011-12-20 | A heat exchanger fin and a heat exchanger core employing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648499U true CN202648499U (en) | 2013-01-02 |
Family
ID=47417596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120540592 Expired - Lifetime CN202648499U (en) | 2011-12-20 | 2011-12-20 | A heat exchanger fin and a heat exchanger core employing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808188A (en) * | 2014-02-18 | 2014-05-21 | 浙江银轮机械股份有限公司 | Fishbone-shaped heat exchanger fin |
-
2011
- 2011-12-20 CN CN 201120540592 patent/CN202648499U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808188A (en) * | 2014-02-18 | 2014-05-21 | 浙江银轮机械股份有限公司 | Fishbone-shaped heat exchanger fin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |