CN203719248U - Parallel flow heat exchanger - Google Patents
Parallel flow heat exchanger Download PDFInfo
- Publication number
- CN203719248U CN203719248U CN201320877106.0U CN201320877106U CN203719248U CN 203719248 U CN203719248 U CN 203719248U CN 201320877106 U CN201320877106 U CN 201320877106U CN 203719248 U CN203719248 U CN 203719248U
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- CN
- China
- Prior art keywords
- heat exchanger
- parallel
- isosceles trapezoid
- flat tube
- fin
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a parallel flow heat exchanger. The parallel flow heat exchanger comprises two flow collecting pipes, a plurality of flat pipes having the same structures and arranged between the two flow collecting pipes as well as fins arranged between adjacent flat pipes. Micro channels in the flat pipes are communicated with the flow collecting pipes at two ends; the cross section of each flat pipe is shaped like a first isosceles trapezoid; the narrower ends of two adjacent flat pipes are arranged in a staggering mode, so two opposite surfaces of two adjacent flat pipes are parallel; each fin comprises a fin body; the cross section of each fin body is B-shaped; each fin body is provided with a plurality of bulges or concave pits. By the technical scheme, the separation and horizontal displacement of the fins among the flat pipes are better prevented, produced condensed water can be favorably drained along the outer walls of the trapezoid flat pipes, the heat exchange surface of the fins is increased, and the performance of the heat exchanger is improved.
Description
Technical field
The utility model relates to field of heat exchangers, relates in particular to a kind of parallel-flow heat exchanger.
Background technology
Among air-cooled heat exchanger, parallel-flow heat exchanger is to manifest the equipment that between cold fluid and hot fluid, heat transmits, and is widely used in the fields such as HVAC.Conventionally the basic structure form of parallel-flow heat exchanger is: two headers that are parallel to each other, be arranged on the consistent parallel flat tube of some structures between header, and soldering between adjacent flat tube for the fin of heat exchange.So-called fin is: be arranged on and need to carry out heat exchanger surface, have the heat transfer sheet area that thermal conductivity is strong, increase heat exchanger, improve the sheet metal of the functions such as heat exchange efficiency, fin can be corrugated or venetian blind type.
In prior art, flat tube is to be provided with flat structure passage, even thickness, the phenomenons such as the fin disengaging that in use, easily appearance is welded, displacement.That fin between flat tube common are is corrugated, rectangle or n shape, and under certain space condition, the heat exchange surface of fin is limited, affects the service behaviour of heat exchanger.
Utility model content
The purpose of this utility model is to propose a kind of parallel-flow heat exchanger, can reduce the phenomenon that fin comes off, is shifted, and increases the heat exchange surface of fin, improves the performance of heat exchanger.
For reaching this object, the utility model by the following technical solutions:
A kind of parallel-flow heat exchanger, comprise two headers, be arranged on some flat tubes that structure between two headers is identical and be located at the fin between adjacent flat tube, the header at the connection two ends, microchannel in flat tube, the cross section of described flat tube is the first isosceles trapezoid, narrower one end of adjacent two flat tubes is crisscross arranged, so that relative two faces are parallel between adjacent two flat tubes;
Described fin comprises fin body, and the shape of cross section of fin body is Type B, and described fin body is provided with a large amount of projections or pit.
Wherein, the height of described projection is less than or equal to 1.5 times of thickness of fin body, and the degree of depth of described pit is less than or equal to 0.5 times of thickness of fin body.
Wherein, described projection or pit is shaped as cylindrical or arc surfaced.
Wherein, the cross section of described flat tube is the first isosceles trapezoid, and the waist of this first isosceles trapezoid and the angle on base are more than or equal to 60 degree and are less than 90 degree.
Wherein, described flat tube comprises some microchannels, and the cross section of each microchannel is all the second isosceles trapezoid, and the waist of described the second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid, and the end of described the second isosceles trapezoid is parallel with the end of the first isosceles trapezoid.
Wherein, the waist of described each second isosceles trapezoid equates with the thickness between flat tube outer wall, and the spacing in same flat tube between adjacent two microchannels equals described thickness.
Wherein, from Dao compare Zhai one end, the wider one end of described flat tube, the geometric sequence that the area of each second isosceles trapezoid that the cross section of each microchannel is tapers off successively.
Implement the utility model embodiment, there is following beneficial effect:
The utility model embodiment is trapezoidal flat tube by adopting cross section, and the mechanism that is crisscross arranged of narrower one end of adjacent two flat tubes, and the height at the fin two ends between adjacent two flat tubes is equated.Prevented preferably disengaging and the horizontal shift of fin between flat tube, the condensed water that is also conducive to produce is got rid of along trapezoidal flat tube outer wall simultaneously; And increased the heat exchange surface of fin, improved the performance of heat exchanger.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the parallel-flow heat exchanger embodiment of the utility model embodiment.
Fig. 2 is the cross sectional representation of flat tube of the parallel-flow heat exchanger of the utility model embodiment.
Fig. 3 is the cross sectional representation of fin of the parallel-flow heat exchanger of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing of the present utility model, technical scheme in the utility model embodiment is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
In conjunction with Fig. 1-3, a kind of parallel-flow heat exchanger of the utility model embodiment is done to description below.
Heat exchanger at the utility model embodiment comprises two headers 1, be arranged on some flat tubes 2 that structure between two headers 1 is identical and be located at the fin 3 between adjacent flat tube 2, flat tube 2 is provided with some microchannels 4, and the microchannel in flat tube 24 is communicated with the header at two ends.Further, in the present embodiment, the cross section of flat tube 2 is isosceles trapezoid, and the height of flat tube 2 one sides is greater than the height of flat tube 2 another sides, makes end face and the Jun Cheng inclined plane, bottom surface of flat tube 2.Further, in the present embodiment, a narrower side of adjacent two flat tubes 2 is crisscross arranged, so that relative two faces are parallel between adjacent two flat tubes 2, this structure is conducive to dwindle the overall volume of heat exchanger.The heat exchanger fin 3 of the present embodiment comprises fin body 31, and the shape of cross section of fin body 31 is Type B, and described fin body 31 is provided with a large amount of projection 32 or pit.By shape of cross section, be Type B fin body 31, increase the soldering contact area of fin body 31 tops 301 and flat tube and fin body 31 bottoms 302 and flat tube, strengthened the steadiness of fin and flat tube welding.Meanwhile, with respect to the fin body of common n shape or H shape, the shape of cross section that the present embodiment is selected is Type B fin body, can not increase the heat exchange area that increases fin under the prerequisite that fin body takes up room; Further, by establish a large amount of projections or pit in fin body, maximized the heat exchange area of fin.
In the utility model embodiment, the height h of the projection 32 arranging in fin body 31 is less than or equal to 1.5 times of thickness k of fin body 31, or the degree of depth of the pit arranging in fin body 31 is less than or equal to 0.5 times of thickness k of fin body 31.As preferred enforcement at that time, the projection 32 arranging in fin body 31 or the shape of pit can be cylindrical or arc surfaced.
Further, in the present embodiment heat exchanger, the waist of the first isosceles trapezoid of the cross section of flat tube 2 and the angle on base are more than or equal to 60 degree and are less than 90 degree, are preferably 75 degree.The cross section of each microchannel 4 of described flat tube 2 is all the second isosceles trapezoid, and the waist of described the second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid; The end of described the second isosceles trapezoid, is parallel with the end of the first isosceles trapezoid.
Preferably, in the present embodiment, the wall thickness of each microchannel 4 of flat tube 2 is identical, the waist that is each second isosceles trapezoid that in the present embodiment, flat tube 2 each microchannel 4 cross sections are equates with the thickness L1 between flat tube 2 outer walls, spacing L2 in same flat tube 2 between adjacent two microchannels 4 equals described thickness L1, is conducive to microchannel 4 interior stream matchmaker's heat exchange.
As a preferred embodiment of the present utility model, the height of each second isosceles trapezoid that in the heat exchanger of the present embodiment, flat tube 2 each microchannel 4 cross sections are equates, makes the heat transfer effect of heat exchanger more even.
As another preferred embodiment of the present utility model, in the heat exchanger of the present embodiment, from Dao compare Zhai one end, the wider one end of flat tube 2, the geometric sequence that the area of each second isosceles trapezoid that the cross section of each microchannel 4 is tapers off successively, the i.e. geometric sequence of sequence (S1, S2, S3, S4, S5, S6, S7) for successively decreasing.
The parallel-flow heat exchanger of above-described embodiment, is trapezoidal flat tube by adopting cross section, and the mechanism that is crisscross arranged of narrower one end of adjacent two flat tubes, and the height at the fin two ends between adjacent two flat tubes is equated.Prevented preferably disengaging and the horizontal shift of fin between flat tube, the condensed water that is also conducive to produce is got rid of along trapezoidal flat tube outer wall simultaneously.And increase the heat exchange surface of fin, improve the performance of heat exchanger.
Above disclosed is only the utility model preferred embodiment, certainly can not limit with this claim scope of the utility model, therefore, all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., still belong to the scope that the utility model is contained.
Claims (7)
1. a parallel-flow heat exchanger, comprise two headers (1), be arranged on some flat tubes (2) that structure between two headers (1) is identical and be located at the fin (3) between adjacent flat tube (2), microchannel (4) in flat tube (2) is communicated with the header at two ends, it is characterized in that, the cross section of described flat tube (2) is the first isosceles trapezoid, narrower one end of adjacent two flat tubes (2) is crisscross arranged, so that relative two faces are parallel between adjacent two flat tubes (2);
Described fin (3) comprises fin body (31), and the shape of cross section of fin body (31) is Type B, and described fin body (31) is provided with some projections (32) or pit.
2. parallel-flow heat exchanger according to claim 1, is characterized in that, the height of described projection (32) is less than or equal to 1.5 times of thickness of fin body (31), and the degree of depth of described pit is less than or equal to 0.5 times of thickness of fin body (31).
3. parallel-flow heat exchanger according to claim 1, is characterized in that, described projection (32) or pit be shaped as cylindrical or arc surfaced.
4. parallel-flow heat exchanger according to claim 1, is characterized in that, the waist of described the first isosceles trapezoid and the angle on base are more than or equal to 60 degree and are less than 90 degree.
5. parallel-flow heat exchanger according to claim 4, it is characterized in that, described flat tube (2) comprises some microchannels (4), each microchannel (4) cross section is all the second isosceles trapezoid, the waist of described the second isosceles trapezoid is parallel with the waist of the first isosceles trapezoid, and the end of described the second isosceles trapezoid is parallel with the end of the first isosceles trapezoid.
6. parallel-flow heat exchanger according to claim 5, it is characterized in that, the waist of the second isosceles trapezoid that described each microchannel (4) cross section is equates with the thickness between flat tube (2) outer wall, and the spacing in same flat tube (2) between adjacent two microchannels (4) equals described thickness.
7. parallel-flow heat exchanger according to claim 5, is characterized in that, from Dao compare Zhai one end, the wider one end of described flat tube (2), the geometric sequence that the area of the second isosceles trapezoid that each microchannel (4) cross section is tapers off successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877106.0U CN203719248U (en) | 2013-12-27 | 2013-12-27 | Parallel flow heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877106.0U CN203719248U (en) | 2013-12-27 | 2013-12-27 | Parallel flow heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719248U true CN203719248U (en) | 2014-07-16 |
Family
ID=51158395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320877106.0U Withdrawn - After Issue CN203719248U (en) | 2013-12-27 | 2013-12-27 | Parallel flow heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697633A (en) * | 2013-12-27 | 2014-04-02 | 无锡佳龙换热器制造有限公司 | Parallel flow heat exchanger |
| CN105526819A (en) * | 2016-01-19 | 2016-04-27 | 江苏炳凯富汽车零部件制造有限公司 | B-type tube and flake combined structure for parallel-flow evaporator and processing process of B-type tube and flake combined structure |
-
2013
- 2013-12-27 CN CN201320877106.0U patent/CN203719248U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697633A (en) * | 2013-12-27 | 2014-04-02 | 无锡佳龙换热器制造有限公司 | Parallel flow heat exchanger |
| CN103697633B (en) * | 2013-12-27 | 2015-12-30 | 无锡佳龙换热器股份有限公司 | A kind of parallel-flow heat exchanger |
| CN105526819A (en) * | 2016-01-19 | 2016-04-27 | 江苏炳凯富汽车零部件制造有限公司 | B-type tube and flake combined structure for parallel-flow evaporator and processing process of B-type tube and flake combined structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |