CN103273295B - Heat exchanger and heat exchanger manufacturing method - Google Patents
Heat exchanger and heat exchanger manufacturing method Download PDFInfo
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- CN103273295B CN103273295B CN201310174271.4A CN201310174271A CN103273295B CN 103273295 B CN103273295 B CN 103273295B CN 201310174271 A CN201310174271 A CN 201310174271A CN 103273295 B CN103273295 B CN 103273295B
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- opening portion
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Abstract
The invention discloses a heat exchanger manufacturing method. The heat exchanger manufacturing method comprises the following steps that at least one heat exchange straight pipe is provided, wherein the heat exchange straight pipe comprises a body section and a transitional section, and the body section and the transitional section are mutually connected; a plurality of fins are layered, and at least one fin opening part is arranged on each fin, wherein the shape of the cross section of each fin opening part is identical to the shape of the cross section of the body section of the heat exchange straight pipe, the area of the cross section of each fin opening part is slightly smaller than or equal to the area of the cross section of the body section; at least one connecting member penetrates through the fin opening parts of the fins and is fixedly connected with the transitional section of the corresponding heat exchange straight pipe; the connecting piece is pulled through external force to enable the body section of the heat exchange straight pipe to penetrate through the fin opening parts, and therefore the body section is closely contacted with the fin opening parts. In addition, the invention further discloses a heat exchanger manufactured by the method.
Description
Technical field
The present invention relates to heat exchanger, particularly relate to the manufacture method being used in heat exchanger in HVAC, automobile, refrigeration and transport field and heat exchanger.
Background technology
Traditional heat exchanger comprises the fin and heat exchanger tube that are fixed together.In order to fin is fixed on heat exchanger tube, general employing mechanical expanding technique and soldering processes.For identical size of heat exchanger, the hydraulic diameter of heat exchanger tube is less, and heat exchange property can be higher, and material cost is lower.But mechanical expanding technology is comparatively large by the impact of heat exchanger tube diameter, can only be applied to the copper pipe that diameter is greater than 5mm at present, and aluminum pipe this technology inapplicable.Unlimited pursuit for current air conditioner industry cost performance is a great limitation.Soldering tech can be used for small hydro diameter hot pipe heat exchanger, but all parts of heat exchanger are aluminium, and soldering processes are complicated, and the problems such as equipment investment is high, unstable product quality greatly limit the market competitiveness of micro-channel heat exchanger.
Summary of the invention
The object of this invention is to provide a kind of method of heat exchanger and manufacture heat exchanger, thus such as, both fin-tube type heat exchanger was may be used for while guarantee heat exchange property, particularly may be used for having the fin-tube type heat exchanger that diameter is less than the heat exchanger tube of 5mm, may be used for micro-channel heat exchanger too, this technology can replace soldering and mechanical expanding technology.
According to an aspect of the present invention, provide a kind of manufacture method of heat exchanger, comprise the following steps:
There is provided at least one heat exchange straight tube, each heat exchange straight tube comprises the main paragraph and changeover portion that are connected to each other;
Stacked multiple fin, described each fin has at least one fin opening portion, the cross section of wherein said fin opening portion is corresponding with the shape of cross section of the main paragraph of described heat exchange straight tube, and the cross-sectional area of described fin opening portion is slightly less than or equals the cross-sectional area of described main paragraph;
The fin opening portion of at least one connector through described fin is fixedly connected with the changeover portion of corresponding heat exchange straight tube;
Pull described connector by external force, make the main paragraph of described heat exchange straight tube through described fin opening portion, thus described main paragraph and described fin opening portion close contact.
Preferably, the area equation of all cross sections of described main paragraph, the area equation of all cross sections of described fin opening portion, the area of described changeover portion cross section reduces from the link with described main paragraph gradually to another link with described connector, thus described changeover portion connects described main paragraph and described connector smoothly.
Preferably, the cross section of described fin opening portion, described main paragraph, described changeover portion is all circular, and the profile of described changeover portion is cardinal principle frustoconical.
Preferably, the overall diameter of described main paragraph equals or slightly larger than the interior diameter of described fin opening portion.
Preferably, the pass of the overall diameter D of described heat exchange straight tube and the interior diameter d of fin opening portion is: 0≤D-d≤0.3mm.
Preferably, the cross section of described fin opening portion, described main paragraph, described changeover portion is all any one in square, rectangle, ellipse, rule or irregular polygon.
Preferably, described fin is provided with flange, and described flange is provided with grooving.
Preferably, the pass of the height H of described flange and the height h of grooving is: h >=0.75H.
According to a further aspect in the invention, provide a kind of heat exchanger manufactured according to said method, comprising:
Multiple heat exchange straight tube, each heat exchange straight tube comprises main paragraph mutually in smoothing junction and changeover portion;
Multiple fin stacked together, described each fin has at least one fin opening portion, the main paragraph of described heat exchange straight tube through described fin opening portion and with its close contact.
Preferably, described heat exchange straight tube is circular cross section, diameter is less than the copper pipe of 5mm.
The method of heat exchanger of the present invention and manufacture heat exchanger both may be used for fin-tube type heat exchanger while guarantee heat exchange property, particularly may be used for having the fin-tube type heat exchanger that diameter is less than the heat exchanger tube of 5mm, may be used for micro-channel heat exchanger too, this technology can replace soldering and mechanical expanding technology.
Heat exchanger tube diameter is less, and heat exchange is better, and material cost is lower.When heat exchanger tube diameter is less, the connection of heat exchanger tube and fin cannot use tube expansion technique, adopts the present invention to manufacture the method for heat exchanger and corresponding heat exchanger can avoid complicated soldering processes, improves the quality of products, reduces cost of goods manufactured and equipment investment.
Accompanying drawing explanation
Referring now to the schematic figures of enclosing, only by way of example, describe embodiments of the invention, wherein, corresponding Reference numeral represents corresponding parts in the accompanying drawings.
Fig. 1 is the schematic diagram of a kind of fin-type heat exchanger according to the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the manufacture method of heat exchanger according to the embodiment of the present invention, illustrated therein is the part being in two heat exchange straight tubes in connection status with pull bar;
Fig. 3 a and 3b is front view according to the fin of the first embodiment of the present invention and left view respectively, shows a part for the fin with two row fin holes;
Fig. 4 a and 4b respectively time the front view of fin according to a second embodiment of the present invention and left view, show a part for the fin with two row fin holes.
Detailed description of the invention
Below by embodiment, and 1-4b by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In the description, same or analogous drawing reference numeral indicates same or analogous parts.The explanation of following reference accompanying drawing to embodiment of the present invention is intended to make an explanation to present general inventive concept of the present invention, and not should be understood to one restriction of the present invention.
Fig. 1 shows the heat exchanger 100 according to the embodiment of the present invention.As shown in Figure 1-2, heat exchanger 100 comprises multiple heat exchange straight tube 10 and fin 20.Heat exchange straight tube 10 can have any shape of cross section, such as circle, square, rectangle, other regular polygon any, or the irregular shape such as oval, avette.Heat exchange straight tube 10 is through the fin opening portion 21 on fin 20, and multiple fin 20 is stacked together is fixed on heat exchange straight tube 10.
Further, described heat exchange straight tube 10 is connected to each other as required by bend pipe 60.Can also be provided with entrance 40 and outlet (not shown), it is connected so that fluid passes in and out with corresponding heat exchange straight tube 10 and bend pipe 60.In addition, temperature sensor 50 can also be provided with on heat exchanger 100, to sense the temperature of heat exchanger 100.Heat exchanger 100 is appreciated that above-mentioned parts can carry out increasing or removing as required, as long as can be made normally to run.
From above-mentioned discussion, tube expansion technique of the prior art and soldering tech all have corresponding shortcoming.Therefore the present invention devises a kind of new solution can abandoning the two shortcoming.
Particularly, comprise the following steps according to the manufacture method of the heat exchanger 100 of the embodiment of the present invention.
First provide multiple heat exchange straight tube 10, described heat exchange straight tube 10 comprises the main paragraph 12 and changeover portion 14 that are connected to each other, as shown in Figure 2.Herein, in order to illustrated object, the cross section of described heat exchange straight tube 10 is circular.As mentioned above, the shape of cross section of heat exchange straight tube 10 can be selected as required, such as square or oval etc.
Secondly, for the ease of manufacturing, also need stacked together for multiple fin 20.Described fin 20 can have at least one fin opening portion 21.Illustrate only fin 20 in fig. 2 and have two fin opening portions 21, obvious fin 20 can have more fin opening portion 21.It should be noted that, the shape of cross section of fin opening portion 21 is configured to corresponding with the shape of cross section of the main paragraph 12 of heat exchange straight tube 10, namely, such as when the main paragraph 12 of heat exchange straight tube 10 has circular cross section, fin opening portion 21 also can be accordingly arranged to have circular cross section.In addition, the cross-sectional area of described fin opening portion 21 is configured to the cross-sectional area being slightly less than or being substantially equal to described main paragraph 12.
Afterwards, at least one connector (such as pull bar 30) is fixedly connected with the changeover portion 14 of corresponding heat exchange straight tube 10 or is mechanically connected (such as weld or riveted joint etc.) through described fin opening portion 21.Will be appreciated that, the shape of cross section of changeover portion 14 and connector 30 and cross-sectional area are not subject to special restriction, as long as in principle can through the opening portion 21 of fin.
Finally, by pulling described connector 30 along the direction shown in Fig. 2, make the main paragraph 12 of described heat exchange straight tube 10 through described fin opening portion 21.
From above-mentioned description, cross-sectional area due to fin opening portion 21 is slightly less than or equals the cross-sectional area of described main paragraph 12, therefore heat exchange straight tube 10 via the effect of external force or pulling force through fin 20 time, inevitable and described fin 20 (specifically fin opening portion 21) close contact.In other words, by above-mentioned layout, achieve the fixed engagement between described fin 20 and heat exchange straight tube 10, identical with the fixed engagement of heat exchanger tube with the fin realized by tube expansion technique or soldering tech or be equal to mutually.
In one embodiment, the cross section of described fin opening portion 21, main paragraph 10 and changeover portion 14 is all configured to circle.In other words, described main body tube 10 has diameter D that is constant or constant.Described fin opening portion 21 has diameter d that is constant or constant.Now, the overall diameter D of main paragraph 10 equals or slightly larger than the interior diameter d of fin opening portion 21 (in the case, may also be referred to as fin hole).Pass fin hole 21 for the ease of described changeover portion 14 and be connected described pull bar 30 and main paragraph 12, described changeover portion 14 is configured to the frustoconical diminished gradually from the left side of Fig. 2 to right side, thus described changeover portion 14 connects main paragraph 12 and pull bar 30 smoothly.That is, described changeover portion 14 in the present embodiment profile be substantially frustoconical.
Preferably, the pass of the overall diameter D of described heat exchange straight tube 10 and the interior diameter d in fin hole 21 is: 0≤D-d≤0.3mm.Usually, described changeover portion 14 is in order to connect described main paragraph 12 and connector 30, described changeover portion 14 is configured to taper as shown in Figure 2, but its shape of cross section can be arbitrary shape, such as square, rectangle, ellipse or other polygon.
In addition, it should be noted that, illustrate only two heat exchange straight tubes 10 in fig. 2, but can understand, the present embodiment can also make many heat exchange straight tubes 10 be connected with many pull bars 30 simultaneously.
As shown in Fig. 3 a-4b, described fin 20 is provided with flange 22, and described flange 22 is provided with grooving 23.Described grooving 23 can compensate the difference between the diameter in fin hole 21 and the diameter of heat exchange straight tube 10, makes heat exchange straight tube 10 than the fin hole 21 being easier to penetrate fin 20.
In order to ensure to insert described fin hole 21 enough smoothly, in the present embodiment preferably, the pass of the height H of described flange 22 and the height h of grooving 23 is: h >=0.75H.
Fig. 3 a-3b shows the fin 20 according to the first embodiment of the present invention.The height h of the grooving 23 of described fin 20 is set to 0.75 times of the height H of flange 22.
Fig. 4 a-4b shows fin 20 according to a second embodiment of the present invention.The height h of the grooving 23 ' of described fin 20 is arranged to the height H equaling flange 22.
In above-mentioned the first and second embodiments (as shown in Fig. 3 a-4b), it only show out the fin 20 with 7 complete fin holes 21.But to those skilled in the art, can understand, fin 20 can be configured to have many row fin holes 21, and is not limited to illustrated.
Certainly, said grooving 23 or 23 ' position be only object in order to illustrate, their quantity and position can be arranged arbitrarily, and are not limited to illustrated.
As known to those skilled in the art, in the fin 20 described in the first and second embodiments of the present invention, as covered in the prior art, the main part of described fin 20 can also be arranged fenestrate portion (sign), to increase the heat exchange efficiency of fin 20.Feature in view of such as window portion is not critical aspects of the present invention, and those skilled in the art can carry out apparent change or amendment as required, therefore are not described in detail at this.
It should be noted that, for the form of such as square or oval heat exchange straight tube 10, the step of described manufacture heat exchanger 100 is substantially identical with the situation of the heat exchange straight tube of above-mentioned circular cross sectional shape, therefore no longer describes in detail at this.
Manufacture method of the present invention is applicable to one-row heat exchanger, is also applicable to arrange heat exchanger more.
Heat exchanger tube diameter is less, and heat exchange is better, and material cost is lower.When heat exchanger tube diameter is less, the connection of heat exchanger tube and fin cannot use tube expansion technique, adopts technical scheme of the present invention, can avoid complicated soldering processes, improve the quality of products, and reduces cost of goods manufactured and equipment investment.
It should be noted that all technical characteristic in the above embodiment of the present invention or portion of techniques feature can carry out combining and forming new embodiment in any suitable manner.
Although some embodiments of this present general inventive concept have been shown and explanation, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this present general inventive concept, can make a change these embodiments, scope of the present invention is with claim and their equivalents.
Claims (14)
1. a manufacture method for heat exchanger, comprises the following steps:
There is provided at least one heat exchange straight tube, each heat exchange straight tube comprises the main paragraph and changeover portion that are connected to each other;
Stacked multiple fin, described each fin has at least one fin opening portion, the cross section of wherein said fin opening portion is corresponding with the shape of cross section of the main paragraph of described heat exchange straight tube, and the cross-sectional area of described fin opening portion is slightly less than or equals the cross-sectional area of described main paragraph;
The fin opening portion of at least one connector through described fin is fixedly connected with the changeover portion of corresponding heat exchange straight tube;
Pull described connector by external force, make the main paragraph of described heat exchange straight tube through described fin opening portion, thus described main paragraph and described fin opening portion close contact.
2. method according to claim 1, wherein,
The area equation of all cross sections of described main paragraph, the area equation of all cross sections of described fin opening portion, the area of described changeover portion cross section reduces from the link with described main paragraph gradually to another link with described connector, thus described changeover portion connects described main paragraph and described connector smoothly.
3. method according to claim 1, wherein,
The cross section of described fin opening portion, described main paragraph, described changeover portion is all circular, and the profile of described changeover portion is cardinal principle frustoconical.
4. method according to claim 2, wherein,
The cross section of described fin opening portion, described main paragraph, described changeover portion is all circular, and the profile of described changeover portion is cardinal principle frustoconical.
5. method according to claim 3, wherein,
The overall diameter of described main paragraph equals or slightly larger than the interior diameter of described fin opening portion.
6. method according to claim 5, wherein,
The pass of the overall diameter D of described heat exchange straight tube and the interior diameter d of fin opening portion is: 0≤D-d≤0.3mm.
7. method according to claim 4, wherein,
The overall diameter of described main paragraph equals or slightly larger than the interior diameter of described fin opening portion.
8. method according to claim 7, wherein,
The pass of the overall diameter D of described heat exchange straight tube and the interior diameter d of fin opening portion is: 0≤D-d≤0.3mm.
9. the method according to any one of claim 1-8, wherein,
The cross section of described fin opening portion, described main paragraph, described changeover portion is all any one in square, rectangle, ellipse, rule or other polygons irregular.
10. the method according to any one of claim 1-8, wherein,
Described fin is provided with flange and described flange is provided with grooving.
11. methods according to claim 9, wherein,
Described fin is provided with flange and described flange is provided with grooving.
12. methods according to claim 10, wherein,
The pass of the height H of described flange and the height h of grooving is: h >=0.75H.
13. methods according to claim 11, wherein,
The pass of the height H of described flange and the height h of grooving is: h >=0.75H.
14. 1 kinds of heat exchangers manufactured by any one of claim 1-13, comprising:
At least one heat exchange straight tube, each heat exchange straight tube comprises main paragraph mutually in smoothing junction and changeover portion;
Multiple fin stacked together, described each fin has at least one fin opening portion, the main paragraph of described heat exchange straight tube through described fin opening portion and with its close contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174271.4A CN103273295B (en) | 2013-05-10 | 2013-05-10 | Heat exchanger and heat exchanger manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174271.4A CN103273295B (en) | 2013-05-10 | 2013-05-10 | Heat exchanger and heat exchanger manufacturing method |
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| Publication Number | Publication Date |
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| CN103273295A CN103273295A (en) | 2013-09-04 |
| CN103273295B true CN103273295B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310174271.4A Expired - Fee Related CN103273295B (en) | 2013-05-10 | 2013-05-10 | Heat exchanger and heat exchanger manufacturing method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940284B (en) * | 2014-03-21 | 2016-09-14 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger and attaching method thereof |
| CN105674785A (en) * | 2014-11-19 | 2016-06-15 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601088A (en) * | 1984-05-25 | 1986-07-22 | Kopczynski John F | Method of assembling a plate-fin heat exchanger |
| US5117902A (en) * | 1989-02-01 | 1992-06-02 | Matsushita Electric Industrial Co., Ltd. | Fin tube heat exchanger |
| CN102216714A (en) * | 2008-06-13 | 2011-10-12 | 古德曼全球股份有限公司 | Method for manufacturing tube and fin heat exchanger with reduced tube diameter and optimized fin produced thereby |
| CN102886666A (en) * | 2011-07-22 | 2013-01-23 | 常州市西屋自动化有限公司 | Finned tube locating fixture and assembly method of heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006125658A (en) * | 2004-10-26 | 2006-05-18 | Matsushita Electric Ind Co Ltd | Heat exchanger |
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2013
- 2013-05-10 CN CN201310174271.4A patent/CN103273295B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601088A (en) * | 1984-05-25 | 1986-07-22 | Kopczynski John F | Method of assembling a plate-fin heat exchanger |
| US5117902A (en) * | 1989-02-01 | 1992-06-02 | Matsushita Electric Industrial Co., Ltd. | Fin tube heat exchanger |
| CN102216714A (en) * | 2008-06-13 | 2011-10-12 | 古德曼全球股份有限公司 | Method for manufacturing tube and fin heat exchanger with reduced tube diameter and optimized fin produced thereby |
| CN102886666A (en) * | 2011-07-22 | 2013-01-23 | 常州市西屋自动化有限公司 | Finned tube locating fixture and assembly method of heat exchanger |
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| CN103273295A (en) | 2013-09-04 |
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