CN109990627A - A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology - Google Patents
A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology Download PDFInfo
- Publication number
- CN109990627A CN109990627A CN201711473506.4A CN201711473506A CN109990627A CN 109990627 A CN109990627 A CN 109990627A CN 201711473506 A CN201711473506 A CN 201711473506A CN 109990627 A CN109990627 A CN 109990627A
- Authority
- CN
- China
- Prior art keywords
- flat tube
- snakelike flat
- snakelike
- heat exchanger
- pipe heat
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
- F28D7/087—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions assembled in arrays, each array being arranged in the same plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/30—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
Abstract
The invention discloses a kind of snakelike flat pipe heat exchangers of multilayer, it includes two headers and the snakelike flat tube of at least two groups, all snakelike flat tubes are successively bent by same root flat tube, two headers are connected to the inlet and outlet of flat tube respectively, flat tube in the snakelike flat tube of two adjacent groups between the outlet portion of the snakelike flat tube of previous group and the import department of the snakelike flat tube of later group forms twist part by distortion, so that the snakelike flat tube of later group is located at next layer of the snakelike flat tube of previous group.The snakelike flat pipe heat exchanger of multilayer of the invention, globality is strong, while can reduce the usage amount of header.The invention also discloses the processing technologys of the snakelike flat pipe heat exchanger of multilayer.
Description
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, specific to design the snakelike flat pipe heat exchanger of multilayer.
Background technique
As shown in Figure 1, being the snakelike flat pipe heat exchanger of existing multilayer.Suitable for dryer, mobile refrigeration machine etc. to requiring
Very compact occasion.The number of plies can change from 2 layers to n-layer, and common is usually 2 to 4 layers.Its process flow is as follows: first making
Make every group of snakelike flat tube 1 (such as Fig. 2), then fin 2 and side plate 3 is packed into (sometimes should not fin and side plate) snakelike flat tube 1 simultaneously
It ties up, the header 4 of the snakelike flat tube of multiple groups and both ends is finally connected to form the snakelike flat pipe heat exchanger entirety of multilayer, finally by
NB soldering oven integral solder.
It is more convenient when the snakelike flat tube insertion header of this structure first layer, but the snakelike flat tube of the second layer and later layer exist
It just will affect the position even destroyed and be inserted into front when being inserted into header, insertion is abnormal difficult, needs through complicated fixture
Guarantee is just able to achieve；After insertion, it is also desirable to which complicated fixture fixation could be prevented from shifting and be deformed in turnover.
In addition, the middle section of the snakelike flat pipe heat exchanger entirety of multilayer, such as the middle layer of three layers of snakelike flat pipe heat exchanger
That is the second layer, due to the blocking of first layer and third layer, the brazing flux spray equipment on NB soldering oven assembly line can not be sprayed onto, and be needed
Brazing flux is sprayed in advance before three layers of snakelike flat tube assembling；In NB brazing process, also it is easy to appear that middle layer is heated less, temperature
It is low, it be easy to cause the defect of fin failure welding.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of snakelike flat pipe heat exchangers of multilayer, and globality is strong, while can
Reduce the usage amount of header.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of snakelike flat pipe heat exchanger of multilayer, packet
Include two headers and the snakelike flat tube of at least two groups, which is characterized in that all snakelike flat tubes are successively curved by same root flat tube
It rolls over, two headers are connected to the inlet and outlet of flat tube respectively, and previous group is snakelike in the snakelike flat tube of two adjacent groups
Flat tube between the import department of the snakelike flat tube of outlet portion and later group of flat tube forms twist part by distortion, so that later group snake
Shape flat tube is located at next layer of the snakelike flat tube of previous group.To form the heat exchanger of multilayered structure.The no matter snakelike flat tube of this programme
How many layer of heat exchanger with the bending of flat tube and distorts, and globality is strong, header only directly and the import of flat tube with
Outlet, the snakelike flat tube of middle layer are not necessarily to convert by header, so that heat exchanger globality is strong, can shorten header
Using length, the usage amount of header is saved.
Optionally, every group of snakelike flat tube is also equipped with side plate and/or fin.The knot of the above-mentioned snakelike flat pipe heat exchanger of multilayer
Structure, can before being twisted into multilayered structure, first to the carry out brazing flux spray for installing fin, then after contorted strata multilayered structure again into
Row soldering.Brazing quality can be improved.
Optionally, the end of the twist part and the end of the bending part of remaining ipsilateral flat tube are remained basically stable.Such knot
Structure can save space, but the finned length at outlet portion or import department needs appropriate reduce.
Optionally, the outlet portion or import department and the horizontal segment end of ipsilateral flat tube are remained basically stable.Such structure
The finned length of heat exchanger is not influenced, guarantees heat exchange efficiency, but twist part has appropriate protrusion.It, can be in order to improve this deficiency
The twist part is bent at outlet portion and import department to the middle part direction of snakelike flat tube side.Optionally, the bending angle
Degree is 90 °.To which twist part is retracted.
Due to the shortening of header lengths in the application, the inlet and outlet of the flat tube exchanges heat compared to existing multilayer flat tube
Device more flexible can be designed in the same side of snakelike flat tube or two sides, and the number of plies more multiple-effect fruit is more prominent.
The invention also discloses a kind of processing technologys of the snakelike flat pipe heat exchanger of multilayer, it is characterised in that all is snakelike flat
Pipe is successively bent by same root flat tube:
1) first group of snakelike flat tube of bending forming；
2) the reserved section of twist part is used to form by the outlet portion starting reserved one of coiled pipe；
3) next group of snakelike flat tube is bent；
4) and so on, until having bent all snakelike flat tubes, i.e., one is reserved after the snakelike flat tube bending forming of previous group
It is used to form the reserved section of twist part, is then further continued for bending next group of snakelike flat tube；
5) inlet and outlet of snakelike flat tube is loaded into header respectively；
6) the snakelike flat tube for installing header is put into progress brazing flux spray on soldering oven assembly line；
7) enter soldering oven after brazing flux spray to be brazed；
8) after coming out of the stove, the reserved section is distorted, so that the snakelike flat tube of later group is located at the next of the snakelike flat tube of previous group
Layer, is finally twisted into the scheduled number of plies.
Optionally, in abovementioned steps 5) also there is the step of installation fin and side plate before.
Optionally, in abovementioned steps 8) also have the step of welding inlet tube and outlet and leak detection on header later.
The snakelike flat pipe heat exchanger of multilayer of the invention, all snakelike flat tubes are bent by a flat tube, whole
Property it is strong, header is only directly connected to the inlet and outlet of flat tube, and the snakelike flat tube of middle layer is not necessarily to make by header conversion
It is strong to obtain heat exchanger globality, the use length of header can be shortened, save the usage amount of header.It simultaneously can be in snakelike flat tube
Soldering processes are carried out before distortion, all snakelike flat tubes are in single layer flat condition in NB soldering, overcome middle layer flat tube
The problem of upper fin failure welding, welding quality is improved, improves product quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the snakelike flat pipe heat exchanger of existing multilayer；
Fig. 2 is the structural schematic diagram of every group of snakelike flat tube in Fig. 1；
Fig. 3 is the structural schematic diagram one of three layers of snakelike flat pipe heat exchanger of embodiment 1；
Fig. 4 is the structural schematic diagram two of three layers of snakelike flat pipe heat exchanger of embodiment 1；
Fig. 5 is the structural schematic diagram three (vertical view) of three layers of snakelike flat pipe heat exchanger of embodiment 1；
Fig. 6 is the partial enlarged view of twist part；
Fig. 7 is the direction view of bowing of twist part；
Fig. 8 is the lateral view of twist part；
Fig. 9 is the snakelike flat tube configuration schematic diagram after the completion of bending；
Figure 10 is that the snakelike flat tube after the completion of bending installs the structural schematic diagram of fin, side plate and header；
Figure 11 is the structural schematic diagram one of three layers of snakelike flat pipe heat exchanger of embodiment 2；
Figure 12 is the structural schematic diagram two of three layers of snakelike flat pipe heat exchanger of embodiment 2；
Figure 13 is the structural schematic diagram three (vertical view) of three layers of snakelike flat pipe heat exchanger of embodiment 2.
Specific embodiment
A kind of snakelike flat pipe heat exchanger of multilayer of the present invention, including two headers and the snakelike flat tube of at least two groups, it is all
Snakelike flat tube is successively bent by same root flat tube, and two headers are connected to the inlet and outlet of flat tube respectively,
Flat tube in the snakelike flat tube of two adjacent groups between the outlet portion of the snakelike flat tube of previous group and the import department of the snakelike flat tube of later group is logical
It crosses distortion and forms twist part, so that the snakelike flat tube of later group is located at next layer of the snakelike flat tube of previous group.To form multilayer knot
The heat exchanger of structure." distortion " is defined as that the flat tube between import department and outlet portion is reversed and is bent, and usually reverses
A biggish angle is bent while substantially 90 °, when which is 180 °, the snakelike flat tube of adjacent two layers is mutual
In parallel.
It is specifically described by taking the snakelike flat pipe heat exchanger of three-decker as an example below.
Embodiment 1
Such as Fig. 3~Figure 10, which includes two headers 4 and three groups of snakelike flat tubes 1.Three groups of snakes
Shape flat tube is successively bent by same root flat tube, as shown in figure 9, state diagram when being three groups of snakelike flat tube bending formings,
Such as Figure 10, every group of snakelike flat tube of the present embodiment is also equipped with fin 2 and side plate 3.Such as Fig. 3, Fig. 4, Fig. 5, two headers 4
Respectively with the import of flat tube 11 and outlet 12, the outlet portion 13 of the snakelike flat tube of previous group is with after in the snakelike flat tube of two adjacent groups
Flat tube between the import department 14 of one group of snakelike flat tube forms twist part 15 by distortion, so that before the snakelike flat tube of later group is located at
Next layer of one group of snakelike flat tube.Be in the present embodiment first group of snakelike flat tube outlet portion 13 and second group of snakelike flat tube into
Flat tube between oral area 14 forms twist part 15, the outlet portion 13 and the snakelike flat tube of third group of second group of snakelike flat tube by distortion
Import department 14 between flat tube equally pass through distortion and form twist part 15, to form the heat exchanger of multilayered structure.As Fig. 6,
Fig. 7 and Fig. 8 is the specific configuration of the present embodiment twist part, is bilateral symmetry, between import department 14 and outlet portion 13
Flat tube is twisted and is bent, and the both ends of crooked position are connected by symmetrical torsion changeover portion 152 with import department and outlet portion
It is logical, flat tube substantially reverse 180 ° adjacent of snakelike flat tube bending in the present embodiment while be 90 °, keeps later group snakelike flat
Pipe is located at next layer of the snakelike flat tube of previous group, and the snakelike flat tube of adjacent two layers is the state being parallel to each other.
Such as Fig. 3, Fig. 4, Fig. 5, the end of the bending part 16 of the end 151 and remaining ipsilateral flat tube of twist part 15 in the present embodiment
It remains basically stable in portion 161.Such structure can save space, but the finned length needs at outlet portion or import department suitably subtract
It is few.The corresponding end position for being located at flat tube horizontal segment of import department, outlet portion in the present embodiment.Fin and side plate in the present embodiment
Installation can be selected according to specific design requirement or is not installed.
Embodiment 2
The present embodiment constructs essentially identical with embodiment 1, and such as Figure 11, Figure 12, Figure 13, difference place is the outlet portion
13 and import department 14 and the horizontal segment end 17 of ipsilateral flat tube remain basically stable.The fin that such structure does not influence heat exchanger is long
Degree guarantees heat exchange efficiency, but twist part has appropriate protrusion.In order to improve this deficiency, by the twist part 15 around outlet portion and
It is bent at import department to the middle part direction of snakelike flat tube side.Bending angle described in the present embodiment is 90 °, thus by twist part
Retraction.
Embodiment 3
The invention also discloses a kind of processing technology of the snakelike flat pipe heat exchanger of multilayer, all snakelike flat tubes are by same
Root flat tube is successively bent:
1) first group of snakelike flat tube of bending forming；
2) the reserved section 01 of twist part is used to form by the outlet portion starting reserved one of coiled pipe；
3) next group of snakelike flat tube is bent；
4) and so on, until having bent all snakelike flat tubes, i.e., one is reserved after the snakelike flat tube bending forming of previous group
It is used to form the reserved section of twist part, is then further continued for bending next group of snakelike flat tube；As shown in figure 9, for three layers bent
Snakelike flat tube；
5) inlet and outlet of snakelike flat tube is loaded into header respectively；
6) the snakelike flat tube for installing header is put into progress brazing flux spray on soldering oven assembly line；
7) enter soldering oven after brazing flux spray to be brazed；
8) after coming out of the stove, the reserved section is distorted, so that the snakelike flat tube of later group is located at the next of the snakelike flat tube of previous group
Layer, is finally twisted into the scheduled number of plies.
Also there is the step of installation fin and side plate before step 5), after being packed into fin and side plate again in the present embodiment
It is packed into header, is then tied up or clamping, as shown in Figure 10.
Also have the step of welding inlet tube and outlet and leak detection on header after step 8) in the present embodiment.
Certainly, in above-described embodiment, step 6) can also be in pricker in the single snakelike flat tube of each group after completing brazing flux spray
It is first twisted into multilayer before brazier soldering, is brazed subsequently into soldering oven, but in terms of the simple degree and welding quality of binding fixture
Not as good as the scheme of above-described embodiment.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting claim, any this field
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore of the invention
Protection scope should be subject to the range that the claims in the present invention are defined.
Claims (10)
1. a kind of snakelike flat pipe heat exchanger of multilayer, including two headers and the snakelike flat tube of at least two groups, which is characterized in that all
Snakelike flat tube successively bent by same root flat tube, two headers respectively with the inlet and outlet of flat tube connect
It is logical, the flat tube in the snakelike flat tube of two adjacent groups between the outlet portion of the snakelike flat tube of previous group and the import department of the snakelike flat tube of later group
Twist part is formed by distortion, so that the snakelike flat tube of later group is located at next layer of the snakelike flat tube of previous group.
2. the snakelike flat pipe heat exchanger of multilayer according to claim 1, spy are that every group of snakelike flat tube is also equipped with side plate
And/or fin.
3. the snakelike flat pipe heat exchanger of multilayer according to claim 1 or 2, spy are, the end of the twist part and same
It remains basically stable the end of the bending part of remaining flat tube of side.
4. the snakelike flat pipe heat exchanger of multilayer according to claim 1 or 2, spy are, the outlet portion or import department with
It remains basically stable the horizontal segment end of ipsilateral flat tube.
5. the snakelike flat pipe heat exchanger of multilayer according to claim 4, spy are that the twist part is around outlet portion and import
It is bent at portion to the middle part direction of snakelike flat tube side.
6. the snakelike flat pipe heat exchanger of multilayer according to claim 5, spy are, the bending angle is 90 °.
7. the snakelike flat pipe heat exchanger of multilayer according to claim 1, spy are that the inlet and outlet of the flat tube is located at
The same side or two sides of snakelike flat tube.
8. a kind of processing technology of the snakelike flat pipe heat exchanger of multilayer, it is characterised in that all snakelike flat tubes are by same root flat tube
Successively bend:
1) first group of snakelike flat tube of bending forming；
2) the reserved section of twist part is used to form by the outlet portion starting reserved one of coiled pipe；
3) next group of snakelike flat tube is bent；
4) and so on, until having bent all snakelike flat tubes, i.e., one is reserved after the snakelike flat tube bending forming of previous group and is used for
The reserved section for forming twist part, is then further continued for bending next group of snakelike flat tube；
5) inlet and outlet of snakelike flat tube is loaded into header respectively；
6) the snakelike flat tube for installing header is put into progress brazing flux spray on soldering oven assembly line；
7) enter soldering oven after brazing flux spray to be brazed；
8) after coming out of the stove, the reserved section is distorted, so that the snakelike flat tube of later group is located at next layer of the snakelike flat tube of previous group, most
It is twisted into the scheduled number of plies eventually.
9. the processing technology of the snakelike flat pipe heat exchanger of multilayer according to claim 8, it is characterised in that: before step 5)
Also there is the step of installation fin and side plate.
10. the processing technology of the snakelike flat pipe heat exchanger of multilayer according to claim 8, it is characterised in that: step 8) it
Also have the step of welding inlet tube and outlet and leak detection on header afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473506.4A CN109990627A (en) | 2017-12-29 | 2017-12-29 | A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473506.4A CN109990627A (en) | 2017-12-29 | 2017-12-29 | A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109990627A true CN109990627A (en) | 2019-07-09 |
Family
ID=67109529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711473506.4A Pending CN109990627A (en) | 2017-12-29 | 2017-12-29 | A kind of snakelike flat pipe heat exchanger of multilayer and its processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990627A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587251A (en) * | 2021-07-26 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Air conditioner |
| WO2021244433A1 (en) * | 2020-05-31 | 2021-12-09 | 杭州三花微通道换热器有限公司 | Heat exchanger and processing method therefor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659500A1 (en) * | 1993-12-20 | 1995-06-28 | MAGNETI MARELLI CLIMATIZZAZIONE S.r.l. | A method of bending a pipe having an oblong cross-section and a heat exchanger with pipes having an oblong section and bent in a U-shape |
| EP0845647A1 (en) * | 1996-11-27 | 1998-06-03 | Behr GmbH & Co. | Flat tube heat exchanger with twisted tube ends |
| CN101850391A (en) * | 2009-03-31 | 2010-10-06 | 三花丹佛斯（杭州）微通道换热器有限公司 | Flat pipe processing method, flat pipe, heat exchanger processing method and heat exchanger |
| JP2016044847A (en) * | 2014-08-21 | 2016-04-04 | 三菱電機株式会社 | Heat exchanger |
| CN106524594A (en) * | 2016-10-13 | 2017-03-22 | 杭州三花家电热管理系统有限公司 | Coil pipe type heat exchanger |
-
2017
- 2017-12-29 CN CN201711473506.4A patent/CN109990627A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0659500A1 (en) * | 1993-12-20 | 1995-06-28 | MAGNETI MARELLI CLIMATIZZAZIONE S.r.l. | A method of bending a pipe having an oblong cross-section and a heat exchanger with pipes having an oblong section and bent in a U-shape |
| EP0845647A1 (en) * | 1996-11-27 | 1998-06-03 | Behr GmbH & Co. | Flat tube heat exchanger with twisted tube ends |
| CN101850391A (en) * | 2009-03-31 | 2010-10-06 | 三花丹佛斯（杭州）微通道换热器有限公司 | Flat pipe processing method, flat pipe, heat exchanger processing method and heat exchanger |
| JP2016044847A (en) * | 2014-08-21 | 2016-04-04 | 三菱電機株式会社 | Heat exchanger |
| CN106524594A (en) * | 2016-10-13 | 2017-03-22 | 杭州三花家电热管理系统有限公司 | Coil pipe type heat exchanger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244433A1 (en) * | 2020-05-31 | 2021-12-09 | 杭州三花微通道换热器有限公司 | Heat exchanger and processing method therefor |
| CN113587251A (en) * | 2021-07-26 | 2021-11-02 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN113587251B (en) * | 2021-07-26 | 2022-11-15 | 青岛海信日立空调系统有限公司 | Air conditioner |
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Application publication date: 20190709 |