CN100575849C - Stacking type heat exchanger and manufacture method thereof - Google Patents
Stacking type heat exchanger and manufacture method thereof Download PDFInfo
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- CN100575849C CN100575849C CN200610095932A CN200610095932A CN100575849C CN 100575849 C CN100575849 C CN 100575849C CN 200610095932 A CN200610095932 A CN 200610095932A CN 200610095932 A CN200610095932 A CN 200610095932A CN 100575849 C CN100575849 C CN 100575849C
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Abstract
A kind of stacking type heat exchanger (1) comprises heat exchanger body (1a), and this heat exchange body has along stacking direction alternately piles up internal layer (4) and the casing (7,8) that pipe (2) and fin (3) are arranged; Be connected to the ascending pipe (9) and the discharge pipe (10) of casing (7); And flange (11), it is used to support ascending pipe and enters pipe (9,10), this ascending pipe is or/and discharge pipe (9,10) is split as two pipes (14,15) at least along above-mentioned stacking direction, and insert movably under the situation of another end (16) that splits pipe (14) an end (17) that splits pipe (15), when in stove, welding, split pipe (14,15) and be welded to one another with heat exchanger body (1a).Ascending pipe and discharge pipe can suitably be welded to heat exchanger body, thereby can simplify the assembling that is used to make.
Description
Technical field
The present invention relates to a kind of stacking type heat exchanger and manufacture method thereof, this stacking type heat exchanger alternately piles up pipe and fin, especially is suitable for the evaporimeter of making vehicle air conditioner.
Background technology
Alternately pile up the so-called stacking type heat exchanger that pipe and fin are arranged and be well-known (for example, JP-A-2000-105023).Fig. 7 to 11 has described the example of this traditional stack formula heat exchanger.Heat exchanger body 100 has heat exchanger internal layer 103, and this heat exchanger internal layer alternately piles up pipe 101 and fin 102, and is provided with side plate 104 and 105 along stacking direction at two end position places of heat exchanger internal layer 103.In each pipe 101 the inner fin (not shown) is arranged, and be formed with fluid passage therein.Two longitudinal end places at pipe 101 all are provided with casing 106 and 107.The longitudinal end that ascending pipe 108 is connected to casing 106 is being used for that heat exchange medium (for example, refrigerant) is injected casing 106, and discharge pipe 109 is connected to another longitudinal end of casing 106 to be used for that heat exchange medium is discharged casing 106.These ascending pipes 108 and discharge pipe 109 are supported by flange 110.In this example, as shown in Figure 9, ascending pipe 108 extends along the stacking direction of pipe 101 and fin 102.
Each parts that are used to constitute heat exchanger body 100 are made by aluminium (comprising aluminium and aluminium alloy), and stacking type heat exchanger is made by welding these parts.More specifically, as shown in figure 10, heat exchanger body 100 is assembled temporarily, the ascending pipe coupling part 114 that ascending pipe 108 inserts casing 106 by welding material 117, and discharge pipe 109 is by the discharge pipe coupling part 115 of welding material 118 insertion casings 106.Then, as shown in Figure 8, the stacking type heat exchanger of assembling fix by using fastening clips 111a and 111b and sidepiece anchor clamps 112 and 113, and each member of assembling and fixing stacking type heat exchanger is connected to each other them under with the state that seals at liquid when it is all soldered in stove the time.These fastening clips 111a and 111b, and sidepiece anchor clamps 112 and 113 are made by stainless steel usually.
When welding in stove, the stacking type heat exchanger of above-mentioned assembling is heated at about 600 ℃ of temperature places.At this moment, though the ascending pipe coupling part 114 of casing 106 and the distance (pitch) between the discharge pipe coupling part 115 increase owing to heat hot expands, the thermal expansion amount of heat exchanger internal layer 103 but depends on the thermal coefficient of expansion of stainless steel fastening clips 111a and 111b.For example, be under the situation of 260mm in above-mentioned pitch during in room temperature, for the length of the above-mentioned pitch of correspondence, the thermal expansion of stainless steel fastening clips 111a and 111b is about 2.2mm, then pitch will become about 262.2mm.Subsequently, when the heat exchanger of welding was cooled to room temperature, according to the Thermal Contraction Coefficient of aluminium, the pitch between coupling part 114 and 115 was shunk about 3.5mm, and then pitch becomes about 258.7mm.Therefore, compare the about 1.3mm of pitch gets finer with welding length 260mm before.On the other hand because casing 106 and 107 is not subjected to the influence of fastening clips 111a and 111b, so they after the heating and the size of cooling between the later stage do not change.Therefore because the influence of the size difference when when heating and cooling, can be in the coupling part 114 and 115 stress that produce along stacking direction.Therefore, as shown in figure 11, coupling part 114 and 115 may produce distortion, and may have problems in the welding process under the state of liquid sealing.In Figure 11, the shrinkage direction after arrow B is represented to weld.In order to address this problem, though considered a kind of method, wherein have only heat exchanger body 100 in stove, to be welded in advance, subsequently, ascending pipe part and discharge pipe part 116 are by assembling ascending pipe 108 and discharge 109 insertion flanges 110, and the ascending pipe that is assembled part is connected by soldering with discharge pipe part 116 and is fixed to heat exchanger body 100, but this method causes having increased installation step.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of stacking type heat exchanger and manufacture method thereof, it is guaranteed heat exchanger body and ascending pipe and discharge pipe when its welding in stove the time, and it can reduce the quantity of the step that is used to assemble.
In order to realize above-mentioned purpose and other purpose, stacking type heat exchanger according to the present invention comprises heat exchanger body, and this heat exchange body has along stacking direction alternately piles up the casing that the heat exchanger of pipe and fin internal layer is arranged and be located at two longitudinal ends of pipe; Ascending pipe, it is connected to one of them the ascending pipe coupling part at a longitudinal end place that is located at casing, to be used for heat exchange medium (for example, refrigerant) injected one of them of casing; Discharge pipe, it is connected in one of them the discharge pipe coupling part at another longitudinal end place that is located at casing, to be used for heat exchange medium discharged one of them of described casing; And flange, it supports ascending pipe and discharge pipe.Stacking type heat exchanger is characterised in that, ascending pipe or discharge pipe or both, at least be divided into two pipes along stacking direction, and when in stove, welding with heat exchange body, (certain interval is for example arranged) in the end of a fractionation pipe movably along stacking direction and insert under the situation of another end that splits pipe, split pipe and be welded to one another.
In this structure, because ascending pipe or/and discharge pipe split along stacking direction at the heat exchanger internal layer, and when welding, split direction (promptly in the edge movably an end that splits pipe, bearing of trend along pipe) is inserted under the situation of another end that splits pipe, it is soldered to split pipe, even heat exchanger body thermal expansion and contraction, and change in the process before and after welding in the pitch between ascending pipe coupling part and the discharge pipe coupling part, the variation of the insertion amount between two ends that this variation also can splitly be in charge of absorbs.Therefore, because being applied to the stress of ascending pipe coupling part and discharge pipe coupling part can be reduced or avoid, and can prevent that simultaneously these parts from producing distortion, so ascending pipe and discharge pipe and heat exchanger body can be welded with suitable form in stove the time when it really.
If in the structure that aforementioned tube splits, between an end that splits pipe and another end that splits pipe, be provided with the annular solder material, it is soldered then more to guarantee to split pipe.
In the method that is used for making according to stacking type heat exchanger of the present invention, this stacking type heat exchanger comprises heat exchanger body, and this heat exchanger body has the casing that alternately piles up two longitudinal ends that the heat exchanger of pipe and fin internal layer arranged and be located at pipe along stacking direction; Ascending pipe, it is connected to one of them the ascending pipe coupling part at a longitudinal end place that is located at casing, to be used for heat exchange medium injected one of them of casing; Discharge pipe, it is connected to one of them the discharge pipe coupling part at another longitudinal end place that is located at casing, to be used for heat exchange medium discharged one of them of casing; And flange, it supports ascending pipe and discharge pipe.And the method comprising the steps of: ascending pipe or described discharge pipe or both are split at least two pipes along stacking direction, an end that splits pipe is inserted into the end that another splits pipe movably along stacking direction, and when in stove, welding, an end that splits pipe is welded to the end that another splits pipe with heat exchange body.
In this method, because ascending pipe or/and discharge pipe split along the stacking direction of heat exchanger internal layer, and when welding, split tube end along splitting direction (promptly at one, along the pipe bearing of trend) (for example insert another fractionation tube end movably, have a certain gap) situation under, it is soldered to split pipe, even heat exchanger body is by thermal expansion and contraction, and the pitch between ascending pipe coupling part and the discharge pipe coupling part changes in the process before and after welding, and the variation of the insertion amount between two ends that this variation also can splitly be in charge of absorbs.Therefore, because being applied to the stress of ascending pipe coupling part and discharge pipe coupling part can be reduced or avoid, and can prevent that simultaneously these parts from producing distortion, so ascending pipe and discharge pipe and heat exchanger body can be welded with suitable form in stove the time when it really.
If when in described said structure one end that splits pipe and the insertion between another the other end that splits pipe or insert prerequisite and supplied the annular solder material, it is soldered so more to guarantee to split pipe.
In stacking type heat exchanger and the method that is used for making according to stacking type heat exchanger of the present invention, because being applied to the stress of ascending pipe discharge pipe coupling part can be reduced or avoid, prevented that thus these parts from deforming, thus ascending pipe and discharge pipe and heat exchanger body really when its can be in stove the time with suitable form welding.Therefore, can reduce the quantity of the step that is used to assemble, and can come the good heat exchanger of manufacturing property with low cost.
According to the detailed description of following the preferred embodiments of the present invention and with reference to the accompanying drawings, other purpose of the present invention, feature and advantage will be conspicuous for those skilled in the art.
Description of drawings
In order more fully to understand the present invention, the needs that satisfy thus and purpose wherein, feature and advantage, will carry out the reference explanation to following specification in conjunction with the accompanying drawings now:
Fig. 1 is the front view of stacking type heat exchanger according to an embodiment of the invention.
Fig. 2 is the plan view of the heat exchanger shown in Fig. 1.
Fig. 3 splits the fragmentary sectional view that the pipe jointing part in the structure divides at pipe, shows the welding step of the heat exchanger shown in Fig. 1.
Fig. 4 is the exploded plan view at the heat exchanger shown in Fig. 1.
Fig. 5 is the front view at the heat exchanger shown in Fig. 1, shows before welding to pass through fastening clips and fixing state.
Fig. 6 is the front view at the heat exchanger shown in Fig. 1, shows after welding to pass through fastening clips and fixing state.
Fig. 7 is the front view of traditional stack formula heat exchanger.
Fig. 8 is the front view at the heat exchanger shown in Fig. 7, shows when welding to pass through fastening clips and fixing state.
Fig. 9 is the plan view at the heat exchanger shown in Fig. 7.
Figure 10 is the decomposition view at the heat exchanger shown in Fig. 7.
Figure 11 is the floor map in the amplification of the heat exchanger shown in Fig. 7, shows the contraction state after the welding.
The specific embodiment
Fig. 1 to Fig. 6 has described stacking type heat exchanger according to an embodiment of the invention and manufacture method thereof.Stacking type heat exchanger 1 comprises heat exchanger body 1a and injection/discharge pipe part 18.Heat exchanger body 1a has along stacking direction and alternately piles up the heat exchanger internal layer 4 that pipe 2 and fin 3 are arranged, and the casing 7 and 8 that is located at two longitudinal ends of pipe 2.In each pipe 2 the inner fin (not shown) is arranged, and the liquid path (not shown) that forms at pipe 2. Side plate 5 and 6 is located at two ends of heat exchanger internal layer portion 4 along stacking direction.Ascending pipe coupling part 12 is located on the longitudinal end of casing 7, and ascending pipe 9 is connected to ascending pipe coupling part 12 to be used for that heat exchange medium (for example, refrigerant) is injected casing 7.Discharge pipe coupling part 13 is located on another longitudinal end of casing 7, and discharge pipe 10 is connected to discharge pipe coupling part 13 to be used for heat exchange medium from casing 7 discharges.Ascending pipe 9 and discharge pipe 10 are supported by flange 11.As illustrated in fig. 1 and 2, ascending pipe 9 extends along the pipe 2 of heat exchanger internal layer 4 and the stacking direction of fin 3.
In this embodiment, ascending pipe 9 is split as two pipes 14 and 15 along its bearing of trend (that is stacking direction).More specifically, ascending pipe 9 is made of with being connected to the pipe 15 of flange the pipe 14 of the ascending pipe coupling part 12 that is connected to casing 7, and ascending pipe 9 is supported by flange 11.Shown in Fig. 3 and 4, the end 16 that pipe 14 is inserted in pipe 15 end 17, and in this state, the outer surface of the inner surface of end 16 and end 17 is welded to one another, under the liquid sealing state, will manage thus 14 with manage 15 and be connected.
Below explanation is used to make the method for this stacking type heat exchanger 1.
At first, interim assembling constitutes each parts of heat exchanger body 1a, and interim again assembling constitutes each parts of injection/discharge pipe part 18, then, pipe 14 and the discharge pipe 10 that constitutes the part of ascending pipe 9 is inserted flange 11.Next step, the end 16 that pipe 14 is inserted in pipe 15 end 17.Shown in Fig. 3 (a), the external diameter of pipe 15 end 17 is slightly less than the internal diameter of the end 16 of pipe 14; And shown in Fig. 3 (b), certain interval is left in the end 16 that pipe 14 is inserted in pipe 15 end 17, that is to say, can relatively move along the bearing of trend (stacking direction of pipe 2 and fin 3) of pipe.In addition, in this embodiment, ring-type welding material 19 inserts pipe 14 in this pipe connecting portion office and manages between 15.
Next step, as shown in Figure 4, injection/discharge pipe part 18 is connected to the body 1a of heat exchanger.That is, the pipe 14 that constitutes the part of ascending pipe 9 is inserted into the ascending pipe coupling part 12 of casing 7 by welding material 24, and discharge pipe 10 inserts discharge pipe coupling part 13 by welding material 25.In this case, heat exchanger body 1a is fixed by anchor clamps, as shown in Figure 5.Anchor clamps comprise side fixture 20,21 and fastening clips 22,23, and the side anchor clamps contact with side plate 5,6, and fastening clips pushes side fixture 20,21 towards the direction of side plate 5,6, and whole heat exchanger body 1a is fixed.In this embodiment, each fastening clips 22 and 23 all forms U-shaped, as shown in Figure 5.In addition, anchor clamps 20,21,22,23 are all made by stainless steel material.
When injection/discharge pipe 18 be connected to heat exchanger body 1a and heat exchanger body 1a by each anchor clamps fixing after, heat exchanger body will be welded in stove.At this moment, during with welding heat exchanger body 1a in stove, the fractionation pipe 14 and 15 that constitutes ascending pipe 9 is welded to one another.In when welding, each parts that weld will be in stove about 600 ℃ locate heating, then, cool to room temperature again.
In welding, since it is all made of aluminum to constitute each parts of heat exchanger body 1a, the size of heat exchanger body 1a can change owing to expanding with heat and contract with cold before and after welding so.Therefore, before welding, the pitch between ascending pipe coupling part 12 and the discharge pipe coupling part 13 changes along stacking direction.For example, as illustrated in Figures 5 and 6, the ascending pipe coupling part 12 of welding forward position stacking direction and the pitch L1 between the discharge pipe coupling part 13 are reduced to pitch L2 (L1＞L2).Wherein, although the thermal coefficient of expansion of aluminium is greater than stainless steel, owing to the fastened anchor clamps 22,23 of heat exchanger body 1a are fixed, so aluminum-made heat exchanger body 1a depends on the thermal coefficient of expansion of stainless steel anchor clamps 22,23 in the thermal expansion that stacking direction causes owing to be heated but as mentioned above.
But, in this embodiment, because ascending pipe 9 splits along the stacking direction of stacking type heat exchanger 1, and the end 17 that splits pipe 15 is inserted in the end 16 that splits pipe 14, has certain clearance, and can move mutually along stacking direction, absorb so the variation of above-mentioned pitch can split the insertion amount of managing in 14 and 15 by change, shown in Fig. 3 (b) and Fig. 3 (c).In Fig. 3 (b) and Fig. 3 (c), A shows the variation of welding front and back insertion amount.Therefore, can be reduced or avoid, so ascending pipe 9 and discharge pipe 10 and heat exchanger body 1a weld with suitable form with desired in stove the time when it really because be applied to the stress of ascending pipe coupling part 12 and discharge pipe coupling part 13.In addition, in this embodiment, insert annular solder material 19 in the coupling part that splits pipe 14 and 15, the end 16 and 17 that then more can guarantee to split pipe 14 and 15 is soldered.
Although in the above-described embodiments, ascending pipe 9 is split as pipe 14 and pipe 15, and discharge pipe 10 or ascending pipe 9 can split with similar mode with discharge pipe 10 boths.In addition, in the above-described embodiments, pipe (ascending pipe 9) is divided into two sections and splits pipe, and the pipe that be split can also be split as the pipe of three or more.
The present invention can be applied to arbitrary stacking type heat exchanger, this heat exchanger alternately piles up pipe and fin, and ascending pipe is or/and discharge pipe extends along stacking direction, and structure of the present invention and method are particularly useful for being used in the stacking type heat exchanger in the vehicle air conditioner.
Though invention has been described in conjunction with most preferred embodiment, only it will be understood by those skilled in the art that otherwise depart from scope of the present invention, can change and revise above-mentioned most preferred embodiment.To those skilled in the art, describe or from disclosed embodiment wherein, other embodiment also is conspicuous from specification of the present invention.Intention is that the embodiment of specification and description only regards as exemplary, and the real scope of the present invention is described by following claim.
Claims (4)
1. a stacking type heat exchanger comprises heat exchanger body, and described heat exchanger body has the casing that alternately piles up two longitudinal ends that the heat exchanger of pipe and fin internal layer arranged and be located at described pipe along stacking direction; Ascending pipe, it is connected on one of them the ascending pipe coupling part of a longitudinal end of described casing, to be used for heat exchange medium injected one of them of described casing; Discharge pipe, it is connected on one of them the discharge pipe coupling part of another longitudinal end of described casing, to be used for described heat exchange medium discharged one of them of described casing; And flange, be used to support described ascending pipe and discharge pipe, it is characterized in that, described ascending pipe or discharge pipe or both are split as two pipes at least along stacking direction, and when in stove, welding with heat exchanger body, insert movably along stacking direction under the situation of another end that splits pipe an end that splits pipe, split pipe and be welded to one another.
2. heat exchanger according to claim 1 is characterized in that, described fractionation pipe is welded to one another by being located at a described ring-type welding material that splits between tube end and another fractionation tube end.
3. method that is used to make stacking type heat exchanger, described stacking type heat exchanger comprises heat exchanger body, and described heat exchanger body has along stacking direction alternately piles up the casing that the heat exchanger of pipe and fin internal layer is arranged and be located at two longitudinal ends of described pipe; Ascending pipe, described ascending pipe are connected on one of them the ascending pipe coupling part of a longitudinal end of described casing, to be used for heat exchange medium injected one of them of described casing; Discharge pipe, it is connected on one of them the discharge pipe coupling part of another longitudinal end of being located at described casing, to be used for above-mentioned heat exchange medium discharged one of them of described casing; And flange, it is used to support described ascending pipe and discharge pipe, it is characterized in that, and described method comprises the steps:
Described ascending pipe or discharge pipe or both are split as two pipes at least along described stacking direction;
The end that another splits pipe is inserted movably along described stacking direction in an end that splits pipe; And
When the described heat exchanger body of welding in stove, simultaneously a described end that splits pipe is soldered to the described end that another splits pipe.
4. method according to claim 3 is characterized in that, described fractionation pipe splits the described end of pipe and the annular solder material between another described end that splits pipe is welded to one another by being located at one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005183419 | 2005-06-23 | ||
| JP2005183419A JP2007003093A (en) | 2005-06-23 | 2005-06-23 | Laminated heat exchanger and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884952A CN1884952A (en) | 2006-12-27 |
| CN100575849C true CN100575849C (en) | 2009-12-30 |
Family
ID=37583229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610095932A Expired - Fee Related CN100575849C (en) | 2005-06-23 | 2006-06-23 | Stacking type heat exchanger and manufacture method thereof |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2007003093A (en) |
| CN (1) | CN100575849C (en) |
| AU (1) | AU2006202325A1 (en) |
| MY (1) | MY146686A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566899B1 (en) * | 1992-04-16 | 1997-08-27 | Behr GmbH & Co. | Heat exchanger, particularly evaporator |
| DE19719257A1 (en) * | 1997-05-07 | 1998-11-12 | Valeo Klimatech Gmbh & Co Kg | Collecting box of evaporator in car air-conditioning coolant circuit |
| CN1616912A (en) * | 2003-11-11 | 2005-05-18 | 三电有限公司 | Stacking-type, multi-flow, heat exchanger |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06241613A (en) * | 1993-02-10 | 1994-09-02 | Zexel Corp | Heat exchanger |
| JPH10296433A (en) * | 1997-05-02 | 1998-11-10 | Keiji Matsumoto | High frequency brazing method for aluminum tube |
| JP2000105023A (en) * | 1998-09-30 | 2000-04-11 | Calsonic Corp | Laminated evaporator |
-
2005
- 2005-06-23 JP JP2005183419A patent/JP2007003093A/en active Pending
-
2006
- 2006-06-02 AU AU2006202325A patent/AU2006202325A1/en not_active Abandoned
- 2006-06-12 MY MYPI20062721A patent/MY146686A/en unknown
- 2006-06-23 CN CN200610095932A patent/CN100575849C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566899B1 (en) * | 1992-04-16 | 1997-08-27 | Behr GmbH & Co. | Heat exchanger, particularly evaporator |
| DE19719257A1 (en) * | 1997-05-07 | 1998-11-12 | Valeo Klimatech Gmbh & Co Kg | Collecting box of evaporator in car air-conditioning coolant circuit |
| CN1616912A (en) * | 2003-11-11 | 2005-05-18 | 三电有限公司 | Stacking-type, multi-flow, heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| MY146686A (en) | 2012-09-14 |
| CN1884952A (en) | 2006-12-27 |
| AU2006202325A1 (en) | 2007-01-11 |
| JP2007003093A (en) | 2007-01-11 |
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Address after: Ise City Shou Qi Japanese qunma County town 20 times Patentee after: Three automatically controlled bursts of Co., Ltd. Address before: Ise City Shou Qi Japanese qunma County town 20 times Patentee before: Sanden Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20190623 |