CN102390012A - Bent heat exchanger and machining method thereof - Google Patents
Bent heat exchanger and machining method thereof Download PDFInfo
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- CN102390012A CN102390012A CN2011102316560A CN201110231656A CN102390012A CN 102390012 A CN102390012 A CN 102390012A CN 2011102316560 A CN2011102316560 A CN 2011102316560A CN 201110231656 A CN201110231656 A CN 201110231656A CN 102390012 A CN102390012 A CN 102390012A
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- heat exchanger
- bending
- header
- inner fovea
- target
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/08—Bending by altering the thickness of part of the cross-section of the work
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a bent heat exchanger and a machining method thereof. The machining method comprises the following steps of: (100) arranging corresponding target bent positions on flow collecting pipes, wherein a plane, on which the target bent positions and central axis of the flow collecting pipes, are arranged is vertical to a plane, on which slotted holes and the central axis are arranged, and the slotted holes are used for the insertion of heat exchange pipes of the flow collecting pipes; (200) machining inner concave parts at the target bent positions of the flow collecting pipes; (300) unfolding and bending the inner concave parts of the flow collecting pipes, wherein the formed bent flow collecting pipes, the heat exchange pipes inserted between the flow collecting pipes and fins arranged between the heat exchange pipes form the bent heat exchanger. According to the machining method disclosed by the invention, the inner concave parts are machined at the target bent positions, no pipe wall limitation exists on the inner side of the bent positions formed by bending, a smaller bending radius is easy to be obtained, and the bending can be realized in a smaller space, thus the heat exchange area of a heat exchanger core body in a limited space is increased, the heat exchange efficiency is improved, and the working process is easy too be implemented and is convenient to be practically used.
Description
Technical field
The present invention relates to the heat transfer technology field, particularly a kind of bending heat exchanger and processing method thereof.
Background technology
Heat exchanger is an equipment of realizing thermal medium and cold medium exchange heat, is widely used in fields such as HVAC.
Heat exchanger generally includes two headers that laterally arrange; Have the many heat exchanger tubes that laterally arrange substantially between the header; At interval radiating fin is set between each heat exchanger tube, the two ends of each heat exchanger tube are communicated with two headers of both sides respectively, and heat transferring medium is got in the heat exchanger tube by the header of a side; Header from opposite side flows out again, thereby realizes heat exchange.Therefore, the length of heat exchanger tube and number have determined the heat exchange property of heat exchanger, and promptly the size of heat exchanger core body (heat exchanger tube is overall) area directly influences the heat exchange property of heat exchanger.
Because the particular requirement in the design or the restriction of installing space, heat exchanger possibly not be plate armature on the whole, but the bending structure, to match with specific installing space.With the air-conditioning system is example, and the specification of air-conditioner outdoor unit is limited, deploys within it when putting heat exchanger; The size of heat exchanger receives the restriction of off-premises station internal volume, if adopt plate-type exchanger, the area of its heat exchange core body is obviously less; Exchange capability of heat is lower; For this reason, the form of available technology adopting bending realizes the increase of heat exchanger core bulk area.
Please refer to Fig. 1, Fig. 1 is the structural representation of bending heat exchanger header in the prior art.
Heat exchanger shown in this figure roughly is bent into C shape, and its bending part forms through heat exchanger is carried out bending along header 11 length directions.Because header 11 diameters are big and the material factors restriction; The radius bend of the bending part that forms is bigger; So; When in limited space, installing, the core body of heat exchanger can obviously not increased with heat exchange area after the length of bending heat exchanger (length of the header 11) bending, the heat exchange property of heat exchanger still can't be improved significantly.
Therefore, how improving the processing method of bending heat exchanger, can obtain less radius bend when making its bending, so that in the less space, increase the core body area, improve heat exchange efficiency, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the invention is the processing method that a kind of bending heat exchanger is provided; Target bending position in the heat exchanger header is provided with inner fovea part, then during bending, can obtain less radius bend; Thereby can in limited space, increase the core body heat exchange area of heat exchanger, improve heat exchange efficiency.Another object of the present invention provides a kind of bending heat exchanger.
For reaching first purpose of the present invention, the present invention provides a kind of processing method of bending heat exchanger, comprises the steps:
100) on header, set corresponding target bending position; Target bending position supplies the plane of the slotted eye of heat exchanger tube insertion with said central axis place with the plane at header central axis place perpendicular to header;
200) process inner fovea part in the target bending position of header;
300) inner fovea part with header closes up bending, the bending header of formation and insert in the heat exchanger tube between the header and the fin be located between the heat exchanger tube forms the bending heat exchanger.
Preferably,
Step 100) in, forms the inner fovea part of vee in the cutting of the target bending position of header;
Step 300) in, after inner fovea part closes up bending, carries out welded seal.
Preferably, step 200) in, punching press forms the inner fovea part to header body inner recess in header target bending position.
Preferably, step 200) in, process at least two said inner fovea parts in target bending position.
Preferably, step 100) in, on header, set at least two places and state target bending position.
Preferably, step 100) also have following step before:
000) the heat exchanger tube two ends are inserted respectively in the slotted eye of corresponding header, and fin placed form heat exchanger core body between the adjacent heat exchange tubes, welding forms heat exchanger again.
Preferably, step 200) and step 300) between also have a following step:
201) the heat exchanger tube two ends are inserted respectively in the slotted eye of corresponding header, and fin placed form heat exchanger core body between the adjacent heat exchange tubes, welding forms heat exchanger again.
Preferably; Step 300) in; After the header inner fovea part closes up bending; The heat exchanger tube two ends are inserted respectively in the slotted eye of corresponding header, and fin placed form heat exchanger core body between the adjacent heat exchange tubes, the bending header of formation and insert in the heat exchanger tube between the header and the fin be located between the heat exchanger tube forms the bending heat exchanger.
The processing method of bending heat exchanger provided by the invention; At first process inner fovea part in target bending position, the inboard no tube wall restriction in the bending position that then forms after the bending, thus be easy to obtain less radius bend; So can in less space, realize bending; Thereby the heat exchange area of heat exchanger core body in the increase confined space improves heat exchange efficiency, and then guarantees the performance of whole air-conditioning system; In addition; In the process of bending header, because the existence of inner fovea part need not the inboard tube wall of unnecessary external force extruding bending part and makes it produce the bending that deformation can realize header; Easy to implement on the operation; Be convenient to actual use, and can not damage header, avoid the improper harmful effect that the header seal is caused of bending.
For reaching another object of the present invention, the present invention also provides a kind of bending heat exchanger, has heat exchanger tube and bending header, forms after the inboard of said bending header bending position closes up bending by the inner fovea part on the header.
Preferably, said bending heat exchanger has bending position, at least two places.
Bending heat exchanger provided by the invention the bending position close up and form by the inner fovea part bending of processing in advance; The radius bend of bending position is less; Can be placed in the less space; Thereby make the bending heat exchanger that to put big heat exchange area in the confined space, improve heat exchange efficiency, and then guarantee the performance of whole air-conditioning system.In addition, this bending heat exchanger owing to the existence of inner fovea part, need not the inboard tube wall of unnecessary external force extruding bending part and makes its generation deformation can realize bending in the bending process, and is easy to implement on the operation.
Description of drawings
Fig. 1 is the structural representation of bending heat exchanger header in the prior art;
Fig. 2 is the flow chart of bending heat exchanger processing method provided by the present invention;
Fig. 3 is the structural representation of a kind of specific embodiment of bending heat exchanger provided by the present invention;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the structural representation before the bending of bending heat exchanger header among Fig. 3;
Fig. 6 is the vertical view of Fig. 5;
Fig. 7 provides the another kind of structural representation before the bending of bending heat exchanger header for the present invention, and this structure illustrates one of them target bending position of header;
Fig. 8 is the structural representation after the header bending among Fig. 7.
The specific embodiment
Core of the present invention is the processing method that a kind of bending heat exchanger is provided; Target bending position in the heat exchanger header is provided with inner fovea part, then during bending, can obtain less radius bend; Thereby can in limited space, increase the core body heat exchange area of heat exchanger, improve heat exchange efficiency.Another core of the present invention provides a kind of bending heat exchanger.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.Need to prove that for the ease of understanding and describe, this paper carries out the explanation of scheme and technique effect, no longer separately argumentation with the heat exchanger that the processing method of bending heat exchanger combines to process thus.
Please refer to Fig. 2 to Fig. 6, Fig. 2 is the flow chart of bending heat exchanger processing method provided by the present invention; Fig. 3 is the structural representation of a kind of specific embodiment of bending heat exchanger provided by the present invention; Fig. 4 is the vertical view of Fig. 3; Fig. 5 is the structural representation before the bending of bending heat exchanger header among Fig. 3; Fig. 6 is the vertical view of Fig. 5.
The header 21 of the bending heat exchanger 2 that this invention provides has the slotted eye that supplies heat exchanger tube 22 to insert, and slotted eye is arranged at the tube wall of header 21 along the length direction of heat exchanger tube 22; The slotted eye of two headers 21 is inserted at the two ends of some heat exchanger tubes 22 respectively; Between each heat exchanger tube 22 fin can be set, form radiator, then refrigerant can get into from a header 21 of heat exchanger 2; Another header 21 flows out, and realizes heat transfer process.
Different with prior art is that bending heat exchanger 2 provided by the invention is processed by following step:
Step S000) heat exchanger tube 22 two ends are inserted respectively in the slotted eye of corresponding header 21, and fin placed between the adjacent heat exchange tubes 22 form heat exchanger core body, welding forms heat exchanger 2 again;
Promptly this scheme processes plate heat exchanger 2 earlier, carries out following process again.Before the welding; Can also heat exchanger 2 core bodys are fixing on short transverse; Such as; Place in two side plates (being arranged at the both sides of the heat exchange core body) outsides and to tie up bar, with strapping (steel wire or steel band) heat exchanger assembly is tied up fixingly along short transverse, send into special-purpose soldering oven at last and carry out disposable welding fabrication.
Step S100) on header 21, sets corresponding target bending position;
Under specific installation environment, when needing bending heat exchanger 2,, clearly need the position of bending according to the spatial constraints condition, be set and be target bending position.Because bending heat exchanger 2 as herein described is the length direction bending along header 21; Then plane, target bending position and header 21 central axis place needs the plane perpendicular to the concentricity axis of slotted eye place; The plane that promptly belongs to perpendicular to heat exchanger tube 22 concentricity axis; After guaranteeing that header 21 and heat exchanger tube 22 installations cooperate the tabular heat exchanger of formation, header 21 can bend in target bending position, and target bending position is in the inboard of bending part; Certainly, the target bending position of 2 liang of headers 21 of heat exchanger is corresponding, all on the same length direction that is connected in the heat exchanger tube 22 between two headers 21; In addition, for the ease of following process, can be in this target bending position setting identification.
Step S200) processes inner fovea part 211 in the target bending position of header 21;
As shown in Figure 2, have the triangle open mouth that cutting forms on the header 21, and the plane at the concentricity axis of header 21 slotted eyes place is perpendicular to the plane at the concentricity axis of breach place.Vee, promptly the axial section of this breach is a triangle, described herein axially is the axial of header 21; Notch size is along the direction convergent towards central axis; Guarantee execution in step S300) time, after header 21 bendings, vee can close up closure.
In addition, the inner fovea part 211 of header 21 also can be the depression that modes such as punching press or extruding form, after the formation depression; The inboard tube wall in bending position still exists, because this place's tube wall depression can not cause the restriction of bending degree yet; Can reduce radius bend; After the bending, depression is closed up closure, can reach the object of the invention equally.
Step S300) inner fovea part 211 with header 21 closes up bending, and the bending header 21 of formation and the heat exchanger tube 22 that inserts between the header 21 form bending heat exchanger 2.
When inner fovea part 211 was breach, after inner fovea part 211 bendings were closed up, the edge joint weld that needs to close up was connected together, and can form closed cavity again, keeps the seal of header 21, prevents coolant leakage.The drift angle angle of vee and the degree of depth of breach directly influence the radius bend of header 21, can be according to actual bending demand to header 21 cutting formation breach.Embodiment is identical with breach, and when inner fovea part 211 was depression, the size of depression also can design according to actual bending demand.In addition, compared to the embodiment of breach, the processing technology of depression is more simple; And because sunk structure does not impact the sealing of header 21 tube walls, then after header 21 bendings, bending part need not welding, seals more reliable; In addition, the user can be according to actual needs, uses to have this header 21 and be flat heat exchanger 2, or re-use after the bending, depression then is set is preferred embodiment comparatively.Certainly, the header 21 of breach is set, after the bending, the nonpitting tube wall in the inside of header 21, the caliber of bending part remains unchanged, and does not influence the circulation of refrigerant.
Compared to prior art, the processing method of bending heat exchanger provided by the invention at first processes inner fovea part 211 in target bending position, the inboard no tube wall restriction in the bending position that forms after the bending, thus be easy to obtain less radius bend.Please comparison diagram 1 and Fig. 2, the frame of broken lines body surface among two figure shows the space, with header 21 structures of prior art among Fig. 1, obviously can't in this space, realize bending, or the length of bending is shorter, the area of heat exchanger 2 core bodys is less accordingly; And header among Fig. 2 21 be owing to can obtain less radius bend, can be in less space inner bending, thus increase the heat exchange area of heat exchanger 2 core bodys, improve heat exchange efficiency, and then guarantee the performance of whole air-conditioning system; In addition; In the process of bending header 21, because the existence of inner fovea part 211 need not the inboard tube wall of unnecessary external force extruding bending part and makes it produce the bending that deformation can realize header 21; Easy to implement on the operation; Be convenient to actual use, and can not damage header 21, avoid the improper harmful effect that header 21 seals are caused of bending.
Need to prove that the inner fovea part 211 of heat exchanger 2 headers 21 forms in the foregoing description after being assembled into heat exchanger 2, also can in the use of heat exchanger 2, being processed to form according to actual user demand.Such as, step S000) can be in step S200) and step S300) between carry out, promptly process after the inner fovea part 211, form heat exchanger 2 again, plate heat exchanger 2 bendings that will form again at last; Or; Step S000) can be in step S300) in carry out; After being header 21 bendings, again heat exchanger tube 22 two ends are inserted respectively in the slotted eye of corresponding bending header 21, then fin is placed between the adjacent heat exchange tubes 22; Form heat exchanger core body, sending into special-purpose soldering oven at last, to carry out disposable welding fabrication be the bending heat exchanger.Aforesaid way all can be realized the object of the invention; Certainly; The mode that processes plate heat exchanger 2 earlier is preferred scheme, because plate heat exchanger 2 welding fabrication, the slight deformation that causes during header 21 processing inner fovea parts 211 can not influence the performance of heat exchanger 2.
Please refer to Fig. 7 and Fig. 8, Fig. 7 provides the another kind of structural representation before the bending of bending heat exchanger header for the present invention, and this structure illustrates one of them target bending position of header; Fig. 8 is the structural representation after the header bending among Fig. 7.
Further, can process at least two inner fovea parts 211 in target bending position.Header 21 target bending positions shown in Fig. 7 are provided with four inner fovea parts 211.When the radial dimension of header 21 is big; If will obtain less radius bend; When target bending position only was provided with an inner fovea part 211, the size of inner fovea part 211 is also corresponding, and big (inner fovea part 211 sizes hour, the restriction effectiveness of tube wall possibly still exist; Can't satisfy the demand that reduces radius bend), be unfavorable for that the processing of inner fovea part 211 and the performance of header 21 keep.When a plurality of inner fovea part 211 was set, the size of each inner fovea part 211 can be less, is beneficial to processing, and bending part can form transition stably, is certain radian, can realize bending preferably, reduces radius bend.
In addition, can set more than one target bending position on the header 21, promptly header 21 can form more than two sections in bending, and correspondingly, the heat exchanger 2 of formation has two above heat-transfer surfaces, so that adapt to specific installation environment more neatly.
The inboard of bending heat exchanger provided by the invention 2 bending positions forms after closing up bending by the inner fovea part on the header 21 211, can be with reference to Fig. 3.Because the existence of inner fovea part 211, the radius bend of these bending heat exchanger 2 bending positions is less, and existing the argumentation do not given unnecessary details at this in said method embodiment.
Bending heat exchanger 2 shown in Fig. 3 forms for three times along header 21 length direction bendings, roughly forms the tetragonal body structure.Because along header 21 length direction bendings, the state of heat exchanger tube 22 need not to change.Be provided with bending position, three places on the header 21, the inboard of each bending position closes up formation by inner fovea part 211 bendings, and bending part is similar to the right angle, and radius bend is less.In fact, according to the heat exchange demand, under the situation of space permission, can also continue bending; Such as, the length of heat exchanger 2 heat-transfer surfaces can continue to extend the corresponding extension of the length of header 21; Again in ad-hoc location target setting bending position, and process inner fovea part 211, bending to adjacent heat-transfer surface place; Can continue to increase heat exchange area, and almost not increase taking up room of heat exchanger 2, can adjust flexibly according to real space.
More than a kind of bending heat exchanger provided by the present invention and processing method thereof have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the processing method of a bending heat exchanger is characterized in that, comprises the steps:
100) on header, set corresponding target bending position; Target bending position supplies the plane of the slotted eye of heat exchanger tube insertion with said central axis place with the plane at header central axis place perpendicular to header;
200) process inner fovea part in the target bending position of header;
300) inner fovea part with header closes up bending, the bending header of formation and insert in the heat exchanger tube between the header and the fin be located between the heat exchanger tube forms the bending heat exchanger.
2. the processing method of bending heat exchanger according to claim 1 is characterized in that,
Step 100) in, forms the inner fovea part of vee in the cutting of the target bending position of header;
Step 300) in, after inner fovea part closes up bending, carries out welded seal.
3. the processing method of bending heat exchanger according to claim 1 is characterized in that step 200) in, punching press forms the inner fovea part to header body inner recess in the target bending position of header.
4. according to each described header of claim 1 to 3, it is characterized in that step 200) in, process at least two said inner fovea parts in target bending position.
5. the processing method of bending heat exchanger according to claim 4 is characterized in that step 100) in, on header, set at least two places and state target bending position.
6. according to each described header of claim 1 to 3, it is characterized in that step 100) also have following step before:
000) the heat exchanger tube two ends are inserted respectively in the slotted eye of corresponding header, and fin placed form heat exchanger core body between the adjacent heat exchange tubes, welding forms heat exchanger again.
7. according to each described header of claim 1 to 3, it is characterized in that step 200) and step 300) between also have a following step:
201) the heat exchanger tube two ends are inserted respectively in the slotted eye of corresponding header, and fin placed form heat exchanger core body between the adjacent heat exchange tubes, welding forms heat exchanger again.
8. according to each described header of claim 1 to 3; It is characterized in that; Step 300) in, after the header inner fovea part closes up bending, the heat exchanger tube two ends is inserted respectively in the slotted eye of corresponding header; And fin placed form heat exchanger core body between the adjacent heat exchange tubes, the bending header of formation and insert in the heat exchanger tube between the header and the fin be located between the heat exchanger tube forms the bending heat exchanger.
9. a bending heat exchanger has heat exchanger tube and bending header, it is characterized in that, forms after the inboard of said bending header bending position closes up bending by the inner fovea part on the header.
10. bending heat exchanger according to claim 9 is characterized in that, said bending heat exchanger has bending position, at least two places.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102316560A CN102390012A (en) | 2011-08-12 | 2011-08-12 | Bent heat exchanger and machining method thereof |
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| CN2011102316560A CN102390012A (en) | 2011-08-12 | 2011-08-12 | Bent heat exchanger and machining method thereof |
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| CN102390012A true CN102390012A (en) | 2012-03-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567731A (en) * | 2012-07-25 | 2014-02-12 | 昆山荣科钣金科技有限公司 | Production technology for condenser |
| CN103968610A (en) * | 2013-02-05 | 2014-08-06 | 珠海格力电器股份有限公司 | Air conditioner and micro channel heat exchanger |
| WO2015169231A1 (en) * | 2014-05-06 | 2015-11-12 | 杭州三花微通道换热器有限公司 | Bended heat exchanger |
| CN114798858A (en) * | 2022-04-30 | 2022-07-29 | 江苏捷诺电梯有限公司 | Intelligent groove type correcting device of elevator groove type mounting plate integrated forming equipment |
| US11585609B2 (en) | 2014-05-06 | 2023-02-21 | Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | Bent heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103567731A (en) * | 2012-07-25 | 2014-02-12 | 昆山荣科钣金科技有限公司 | Production technology for condenser |
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| US11585609B2 (en) | 2014-05-06 | 2023-02-21 | Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | Bent heat exchanger |
| CN114798858A (en) * | 2022-04-30 | 2022-07-29 | 江苏捷诺电梯有限公司 | Intelligent groove type correcting device of elevator groove type mounting plate integrated forming equipment |
| CN114798858B (en) * | 2022-04-30 | 2023-09-12 | 苏州蒙特纳利驱动设备有限公司 | Intelligent groove type correction device of elevator groove type mounting plate integrated into one piece equipment |
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Owner name: DANFOSS AS Effective date: 20120626 Owner name: SANHUA HOLDING GROUP CO., LTD. Free format text: FORMER OWNER: HANGZHOU SANHUA MICRO CHANNEL HEAT EXCHANGER CO., LTD. Effective date: 20120626 |
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Address after: 310018 -1, No. 12, 289 Avenue, Hangzhou economic and Technological Development Zone, Zhejiang, China Applicant after: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. Address before: 310018 Hangzhou economic and Technological Development Zone, Zhejiang, No. 12 Avenue, No. 289 Applicant before: DANFOSS SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SANHUA DANFOSS (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER CO., LTD. TO: HANGZHOU SANHUA MICRO CHANNEL HEAT EXCHANGER CO., LTD. Free format text: CORRECT: ADDRESS; FROM: 310018 HANGZHOU, ZHEJIANG PROVINCE TO: 312500 SHAOXING, ZHEJIANG PROVINCE |
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Effective date of registration: 20120626 Address after: 312500 Shaoxing City, Zhejiang province Xinchang Qixing street under the Liquan Applicant after: SANHUA HOLDING GROUP Co.,Ltd. Co-applicant after: DANFOSS A/S Address before: 310018 -1, No. 12, 289 Avenue, Hangzhou economic and Technological Development Zone, Zhejiang, China Applicant before: SANHUA (HANGZHOU) MICRO CHANNEL HEAT EXCHANGER Co.,Ltd. |
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Application publication date: 20120328 |