CN108645076A - A kind of tube-expanding type heat exchanger and preparation method thereof - Google Patents
A kind of tube-expanding type heat exchanger and preparation method thereof Download PDFInfo
- Publication number
- CN108645076A CN108645076A CN201810240325.5A CN201810240325A CN108645076A CN 108645076 A CN108645076 A CN 108645076A CN 201810240325 A CN201810240325 A CN 201810240325A CN 108645076 A CN108645076 A CN 108645076A
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- Prior art keywords
- fin
- notch
- extension
- exchanging pipe
- heat exchanging
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- 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
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention discloses a kind of tube-expanding type heat exchanger and preparation method thereof, and the heat exchanger includes：Heat exchanging pipe；In conjunction with several fins being fixed on heat exchanging pipe；And the heater strip being arranged on fin.Tube-expanding type heat exchanger provided by the invention makes the frosting on heat exchanging pipe remove in time, to avoid frosted water that refrigerant is hindered directly to carry out heat exchange with object to be cooled, maintains the efficiency of heat exchange by the way that heater strip is arranged.A piece heat exchanging pipe is bent to U-shaped structure by this method by once bending, and without additionally increasing solder joint, has saved welding procedure, to save cost, also, the heat exchanging pipe of heat exchanger after molding is obliquely installed, to increase heat exchange efficiency.
Description
Technical field
The present invention relates to technical field of heat exchangers.More particularly, to a kind of tube-expanding type heat exchanger and preparation method thereof.
Background technology
Refrigeration for refrigerator industry development is rapid at present, and the course of work of refrigeration machine is a Reversible Cycle process.Compressed mistake
Refrigerant vapour is condensed into liquid refrigerant within the condenser, then passes through throttle valve decompression cooling, in vaporization chamber, refrigeration
Agent liquid absorbs heat from object to be cooled and is all evaporated to gas, by compressor inspiration, is carried out down again through overcompression
One cycle, wherein refrigerator evaporated refrigerant liquid generally uses air-cooled heat exchanger, wherein finned heat exchanger is current
The air-cooled heat exchanger of most mainstream.There are mainly two types of currently used finned heat exchangers, and one kind is tube-expanding type, and one is oblique cuttings
Formula.Wherein tube-expanding type product is that have circular hole on fin, and pipeline passes through circular hole, and fin is fixed by the way that tubing internal diameter swells, this
Straight tube road is first penetrated fin by kind technique needs, internal diameter swells, forming elbow, pipeline welding；Circular hole quantity on single fin
It determines pipeline quantity, finally an import one outlet is stayed to form continuous cooling pipe pipeline welding again after tube expansion, bending and molding
Road.And this product radius bend is larger, the layered and parallel arrangement of pipeline, and layering quantity is identical with fin hole count；Refrigerator industry
Typically two layers and three layer arrangements；It is not that wrong arrangement is set that the product of this structure, which has solder joint, pipeline, and the curved spacing of snake is big, it is necessary to
Installation end plate could fix pipeline, and this structure is not compact enough, and cost is higher.Also, existing heat exchanger with refrigerant not
It is disconnected to absorb heat, lead to heat exchanger surface frosting, when needing to cool down object to be cooled, the water heat exchange efficiency of frosting is relatively low, refrigeration
Agent can not directly exchange heat with object to be cooled, cause if things go on like this heat exchange efficiency it is lower and lower.
Invention content
At least one of in order to solve the above-mentioned technical problem, the first aspect of the present invention provides a kind of tube-expanding type heat exchange
Device, the heat exchanger include：
Heat exchanging pipe；
In conjunction with several fins being fixed on heat exchanging pipe；And
The heater strip being arranged on fin；
Wherein, the heat exchanging pipe includes at least the first heat exchanging pipe part and the second heat exchanging pipe portion of parallel arrangement
Point, several fins include the first fin that part is formed on the first heat exchanging pipe part, and are partly formed in the second heat exchange
The second fin on pipeline portions, first fin upper edge and lower edge and the second fin upper edge and lower edge exist
It is flushed in horizontal direction；
First fin includes the first noumenon portion and the first extension for being extended by the first noumenon portion edge, the second fin packet
The second extension for including the second body part and being extended by the second body part edge, the extension of the first extension and the second extension
Direction on the contrary, and a side far from the first noumenon portion of first extension along being recessed inwardly to form the first notch,
A side edge of second extension far from second body part is recessed inwardly to form the second notch, and the first of the first fin
First passage is collectively formed in notch, second channel is collectively formed in the second notch of the second fin, and it is logical that the heater strip is located at first
Fixation is combined in road and second channel and with fin.
Preferably, the first heat exchanging pipe part includes being inserted into the first noumenon portion and the first upper layer pipeline in Different Plane
With first lower layer's pipeline, the second heat exchanging pipe part includes being inserted into the second body part and the second upper layer pipeline in Different Plane
With second lower layer's pipeline；
Wherein, first upper layer pipeline one end port is connect by bend pipe with second upper layer pipeline one end port, the first lower layer
Pipeline one end port is connect by bend pipe with second lower layer's pipeline one end port.
Preferably, the heater strip includes at least the first flat part being located in first passage and is located at second channel
The second interior flat part.
Preferably, a side edge far from first extension in the first noumenon portion is recessed inwardly to form third slot
Mouthful, a side edge far from second extension of second body part is recessed inwardly to form the 4th notch；
The heater strip includes the first flat part being located in the first passage formed by first notch, is located at by institute
State the second flat part in the second channel of the second notch formation, the in the third channel formed by the third notch
Three flat parts, the 4th flat part in the fourth lane formed by the 4th notch, adjacent first flat part of connection and
First bending part of third flat part and the second bending part of connection adjacent second flat part and the 4th flat part.
Preferably, the heat exchanger further comprises the heat exchanging pipe and heater strip combining fixed flexible fastening
Part.
Preferably, through-hole is offered on the first noumenon portion of first fin and the second body part of the second fin, institute
It states heat exchanging pipe and the fin is inserted by through-hole；
Wherein, the through-hole is two, and each through-hole is arranged independently of each other, and the heat exchanging pipe is a pipeline bent
At U-shaped structure.
Second aspect of the present invention provides a kind of production method of heat exchanger, including：
S1：A piece pipeline is bent to form U-shaped heat exchanging pipe, the heat exchanging pipe includes upper layer pipeline and lower layer's pipe
Road；
S2：Using the through-hole being arranged independently of each other on heat exchanging pipe, upper layer pipeline and lower layer's pipeline are inserted into several fins；
Several fins include the first fin that part is formed on the first heat exchanging pipe part, and are partly formed in second
The second fin on heat exchanging pipe part, the first fin include the first noumenon portion and extended by the first noumenon portion edge first
Extension, the second fin include the second body part and the second extension for being extended by the second body part edge, the first extension
With the extending direction of the second extension on the contrary,
Wherein, the first extension is opposite with the extending direction of the second extension；
Several first fins form the first fin unit, and several second fins form the second fin unit；
S3：By the oblique bending of pipeline between two adjacent fins unit, the upper edge of adjacent fins is made to exist with lower edge
It is flushed in horizontal direction.
Preferably, a side edge of first extension far from the first noumenon portion is recessed inwardly to form the first slot
Mouthful, first notch is collectively formed first passage, a side of second extension far from second body part along to
Sunken inside forms the second notch, and second channel is collectively formed in second notch；The method further includes：
Heater strip is pressed into first passage and second channel and is combined fixation with fin.
Preferably, a side edge of first extension far from the first noumenon portion is recessed inwardly to form the first slot
Mouthful, first notch is collectively formed first passage, a side of second extension far from second body part along to
Sunken inside forms the second notch, and second channel is collectively formed in second notch；Prolong far from described first in the first noumenon portion
For a side of extending portion along being recessed inwardly to form third notch, third channel, second ontology is collectively formed in the third notch
For a side of portion far from second extension along being recessed inwardly to form the 4th notch, four-way is collectively formed in the 4th notch
Road；The method further includes：
Heater strip is pressed into first to fourth channel and is combined fixation with fin.
Beneficial effects of the present invention are as follows：
A kind of tube-expanding type heat exchanger of present invention offer and preparation method thereof, by the way that heater strip is arranged, makes on heat exchanging pipe
Frosting is removed in time, to avoid frosted water that refrigerant is hindered directly to carry out heat exchange with object to be cooled, maintains heat exchange
Efficiency.
In the preferred scheme, heater strip is closer with refrigeration pipeline distance, and defrosting effect is more obvious, also, heat exchange
Fin between device two adjacent groups not on one wire, but set, and more wind can be made to pass through fin in this way, accelerates heat by wrong arrangement
The progress of exchange, while heat exchanging pipe is bent to U-shaped structure, reduce the welding procedure of pipeline formation.
Description of the drawings
Specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows a kind of structural representation for tube-expanding type heat exchanger that an embodiment of first aspect present invention provides
Figure.
Fig. 2 shows Fig. 1 schematic elevation views.
Fig. 3 shows one of the fin structure schematic diagram that one embodiment of the first aspect of the present invention provides.
Fig. 4 shows the two of the fin structure schematic diagram that one embodiment of the first aspect of the present invention provides.
Fig. 5 shows that a kind of heat exchanging pipe that one embodiment of second aspect of the present invention provides is bent to form schematic diagram.
Fig. 6 shows a kind of production method flow diagram for heat exchanger that one embodiment of second aspect of the present invention provides
One of.
Fig. 7 shows a kind of production method flow diagram for heat exchanger that one embodiment of second aspect of the present invention provides
Two.
Specific implementation mode
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
The various sectional views that embodiment is disclosed according to the present invention are shown in the accompanying drawings.These figures are not drawn to scale
, wherein for the purpose of clear expression, some details are magnified, and some details may be omitted.It is shown in the drawings
Various regions, the shape of layer and the relative size between them, position relationship are merely exemplary, in practice may be due to system
It makes tolerance or technology restriction and is deviated, and those skilled in the art may be additionally designed as required with not similar shape
Shape, size, the regions/layers of relative position.
The heat exchanger of refrigerator evaporation in the prior art, heat exchanging pipe is interior to be equipped with refrigerant liquid, in evaporation stage, needs
Refrigerant is evaporated to gas, still, heat exchanging pipe is due to the presence of refrigerant, and surface is easy frosting, and frosted water hinders
Refrigerant directly carries out heat exchange with object to be cooled, and heat exchanger effectiveness is caused to reduce.
In the first aspect of the present invention, a kind of tube-expanding type heat exchanger is provided, incorporated by reference to shown in Fig. 1-3, the heat exchanger
Including：Heat exchanging pipe 1；In conjunction with several fins 2 being fixed on heat exchanging pipe；And the heater strip 3 being arranged on fin；Its
In, the heat exchanging pipe includes at least the first heat exchanging pipe part 11 and the second heat exchanging pipe part 12 of parallel arrangement, several
Fin includes the first fin 21 that part is formed on the first heat exchanging pipe part 11, and is partly formed in the second heat exchanging pipe
The second fin 22 on part 12,21 upper edge of the first fin and lower edge and 22 upper edge of the second fin and following
Edge flushes in the horizontal direction；First fin 21 include the first noumenon portion 211 and extended by 211 edge of the first noumenon portion the
One extension 212, the second extension that the second fin 22 extends including the second body part 221 and by 221 edge of the second body part
The extending direction of portion 222, the first extension 212 and the second extension 222 on the contrary, and first extension 212 far from institute
The a side in the first noumenon portion 211 is stated along being recessed inwardly to form the first notch 213, second extension 222 is far from described the
Along being recessed inwardly to form the second notch 223, the first notch 213 of the first fin 21 is collectively formed a side of two body parts 221
First passage, the second fin 22 the second notch 223 second channel is collectively formed, the heater strip 3 is located at first passage and
Fixation is combined in two channels and with fin.
Obviously, several first fins form the first fin unit, and several second fins form the second fin unit, also,
First fin unit is to be staggered one by one with the second fin unit, i.e., as illustrated in FIG. 1, from right to left or from left to right
It is repeated in for the first fin unit, the second fin unit, the first fin unit, the second fin unit, also, well known, the
One fin unit can make up the flush arrangement of similar cuboid-type with the second fin unit, and the present invention repeats no more.
A kind of tube-expanding type heat exchanger provided by the invention keeps the frosting on heat exchanging pipe clear in time by the way that heater strip is arranged
It removes, to avoid frosted water that refrigerant is hindered directly to carry out heat exchange with object to be cooled, maintains the efficiency of heat exchange.
Further, it please continue to refer to Fig. 1 and Fig. 3, marks for convenience, marks the insertion position of pipeline in figure 3, the
One heat exchanging pipe part 11 includes being inserted into the first noumenon portion 211 and being under the first upper layer pipeline 1211 and first of Different Plane
Layer pipeline 1212, the second heat exchanging pipe part 12 include being inserted into the second body part 221 and the second upper layer pipe in Different Plane
Road 1221 and second lower layer's pipeline 1222；Wherein, 1211 one end port of the first upper layer pipeline passes through bend pipe and the second upper layer pipeline
1221 one end port connect, and first lower layer's pipeline, 1212 one end port is connected by bend pipe and second lower layer's pipeline, 1222 one end port
It connects.
Further, incorporated by reference to shown in Fig. 2, it is flat that the heater strip 3 includes at least first be located in first passage
Straight portion and the second flat part in second channel.
Or, it is preferable that shown in Fig. 4, a side far from first extension in the first noumenon portion
Along being recessed inwardly to form third notch 233, a side edge far from second extension of second body part concaves
It falls into and forms the 4th notch 243；The heater strip include be located in the first passage formed by first notch 213 it is first flat
Straight portion, is located at by the third notch 233 the second flat part in the second channel formed by second notch 223
It is third flat part in the third channel of formation, the in the fourth lane formed by the 4th notch 243 the 4th straight
Portion, the first bending part of adjacent first flat part of connection and third flat part and adjacent second flat part of connection and the 4th straight
Second bending part in portion.
Heater strip is substantially disposed proximate to the side of heat exchanging pipe, to carry by above-mentioned two optional embodiment
The high effect of heater strip.Two notches are opened up on a fin to increase so that the arrangement of heater strip is more intensive
Heating effect.
Optionally, heater strip and non-continuous unlatching, in order to avoid generating unnecessary negative effect to refrigeration, heater strip can
It is heated with time segment, as long as that is, being capable of time defrosting.
Certainly, notch includes the limit protrusion being formed on the inside of notch, shown in Fig. 3 and Fig. 4, limit protrusion setting
In the inside of notch, limit protrusion can prevent heater strip from being skidded off from notch opening.
In addition, from the above, it is seen that the heat exchanging pipe of heat exchanger is to be obliquely installed, angle of inclination can be according to need
Be set as with the angle of perpendicular at 10-40 °, either for the angle of horizontal plane be 10-40 ° or for other
Meaning angle, the invention is not limited thereto.
In addition, it is optional, it is offered in the first noumenon portion of first fin and the second body part of the second fin logical
Hole, the heat exchanging pipe are inserted into the fin by through-hole.
Preferably, the through-hole is two, and each through-hole is arranged independently of each other, and the heat exchanging pipe is that a pipeline is bent
The U-shaped structure of formation.
Certainly, as needed, duct can be set to the both sides of the central axes in fin height direction, can also be set to it
On central axes, similarly, notch can be set in the diagonal section of fin edges, and shown in Fig. 4, the present invention repeats no more.
When heat exchanging pipe is bent to form by a pipeline, pipe line need not be exchanged and welded, to save welding
Technique has saved cost.
Certainly, when needing to increase the volume such as thickness of heat exchanger, the number of through-hole can carry out as needed
Increase, for example, 3, needs a piece pipeline of increase to be welded on U-shaped structure heat exchanging pipe at this time, the invention is not limited thereto.
In an embodiment of the second aspect of the present invention, a kind of production method of heat exchanger is provided, is please specifically tied
Fig. 5 is closed to Fig. 7, including：
S1：As shown in figure 5, a pipeline is bent to form U-shaped heat exchanging pipe, the heat exchanging pipe includes upper layer pipeline
With lower layer's pipeline.
S2：Using the through-hole being arranged independently of each other on heat exchanging pipe, upper layer pipeline and lower layer's pipeline are inserted into several fins.
Several fins include the first fin that part is formed on the first heat exchanging pipe part, and are partly formed in second
The second fin on heat exchanging pipe part, the first fin include the first noumenon portion and extended by the first noumenon portion edge first
Extension, the second fin include the second body part and the second extension for being extended by the second body part edge, the first extension
It is opposite with the extending direction of the second extension, wherein the first extension is opposite with the extending direction of the second extension；Several first
Fin forms the first fin unit, and several second fins form the second fin unit.
S3：By the oblique bending of pipeline between two adjacent fins unit, the upper edge of adjacent fins is made to exist with lower edge
It is flushed in horizontal direction.
Certainly, a side edge of first extension far from the first noumenon portion is recessed inwardly to form the first notch,
First passage is collectively formed in first notch, and a side edge of second extension far from second body part concaves
It falls into and forms the second notch, second channel is collectively formed in second notch.
The method further includes：
S41：Heater strip is pressed into first passage and second channel and is combined fixation with fin.
Preferably, in another preferred embodiment of present aspect, first extension is far from the first noumenon
For a side in portion along being recessed inwardly to form the first notch, first passage, second extension is collectively formed in first notch
For a side far from second body part along being recessed inwardly to form the second notch, it is logical that second notch is collectively formed second
Road；A side edge of the first noumenon portion far from first extension is recessed inwardly to form third notch, the third slot
Third channel is collectively formed in mouth, and a side edge of second body part far from second extension is recessed inwardly to form the 4th
Fourth lane is collectively formed in notch, the 4th notch；The method further includes：
S42：Heater strip is pressed into first to fourth channel and is combined fixation with fin.
A kind of heat exchanger production method that present aspect provides, U-shaped knot is bent to by once bending by a heat exchanging pipe
Structure has saved welding procedure without additionally increasing solder joint, to save cost, also, heat exchanger after molding
Heat exchanging pipe is obliquely installed, to increase heat exchange efficiency.
In a preferred approach, increased heater strip can be conducive to defrost.
Belong to " first ", " second " etc. in description and claims of this specification and above-mentioned attached drawing are for distinguishing
Different objects, rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, meaning
Figure, which is to cover, non-exclusive includes.Such as contain process, method, system, product or the equipment of series of steps or unit
The step of being not limited to list or unit, but further include the steps that optionally not listing or unit, or optionally also
Include for these processes, method or the intrinsic gas step or unit of equipment.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
Row of the obvious changes or variations that bright technical solution is extended out still in protection scope of the present invention.
Claims (9)
1. a kind of tube-expanding type heat exchanger, which is characterized in that the heat exchanger includes：
Heat exchanging pipe；
In conjunction with several fins being fixed on heat exchanging pipe；And
The heater strip being arranged on fin；
Wherein, the heat exchanging pipe includes at least the first heat exchanging pipe part and the second heat exchanging pipe part of parallel arrangement, if
Dry fin includes the first fin that part is formed on the first heat exchanging pipe part, and is partly formed in the second heat exchanging pipe portion
The second fin on point, first fin upper edge and lower edge and the second fin upper edge and lower edge are in level side
It flushes upwards；
First fin includes the first noumenon portion and the first extension for being extended by the first noumenon portion edge, and the second fin includes the
Two body parts and the second extension extended by the second body part edge, the extending direction of the first extension and the second extension
On the contrary, and a side far from the first noumenon portion of first extension along being recessed inwardly to form the first notch, it is described
A side edge of second extension far from second body part is recessed inwardly to form the second notch, the first notch of the first fin
First passage is collectively formed, second channel is collectively formed in the second notch of the second fin, the heater strip be located at first passage and
Fixation is combined in second channel and with fin.
2. heat exchanger according to claim 1, which is characterized in that the first heat exchanging pipe part includes being inserted into the first noumenon portion simultaneously
The first upper layer pipeline in Different Plane and first lower layer's pipeline, the second heat exchanging pipe part include being inserted into the second body part simultaneously
The second upper layer pipeline in Different Plane and second lower layer's pipeline；
Wherein, first upper layer pipeline one end port is connect by bend pipe with second upper layer pipeline one end port, first lower layer's pipeline
One end port is connect by bend pipe with second lower layer's pipeline one end port.
3. heat exchanger according to claim 2, which is characterized in that the heater strip, which includes at least, to be located in first passage
First flat part and the second flat part in second channel.
4. heat exchanger according to claim 2, which is characterized in that separate first extension in the first noumenon portion
A side is along being recessed inwardly to form third notch, and a side far from second extension of second body part is along inwardly
Recess forms the 4th notch；
The heater strip includes the first flat part being located in the first passage formed by first notch, positioned at by described the
The second flat part in the second channel of two notches formation, the third in the third channel formed by the third notch are put down
Straight portion, the 4th flat part in the fourth lane formed by the 4th notch, adjacent first flat part of connection and third
First bending part of flat part and the second bending part of connection adjacent second flat part and the 4th flat part.
5. according to any one of the claim 1-4 heat exchangers, which is characterized in that the heat exchanger further comprises changing described
Pipe line and heater strip combine fixed flexible fastening piece.
6. according to any one of the claim 1-4 heat exchangers, which is characterized in that the first noumenon portion of first fin and
Through-hole is offered on second body part of two fins, the heat exchanging pipe is inserted into the fin by through-hole；
Wherein, the through-hole is two, and each through-hole is arranged independently of each other, and the heat exchanging pipe is what a pipeline was bent to form
U-shaped structure.
7. a kind of production method of heat exchanger, which is characterized in that including：
S1：A piece pipeline is bent to form U-shaped heat exchanging pipe, the heat exchanging pipe includes upper layer pipeline and lower layer's pipeline；
S2：Using the through-hole being arranged independently of each other on heat exchanging pipe, upper layer pipeline and lower layer's pipeline are inserted into several fins；
Several fins include the first fin that part is formed on the first heat exchanging pipe part, and are partly formed in the second heat exchange
The second fin on pipeline portions, the first fin include the first noumenon portion and by the first noumenon portion edge extend first extend
Portion, the second fin include the second body part and the second extension for being extended by the second body part edge, the first extension and
The extending directions of two extensions on the contrary,
Wherein, the first extension is opposite with the extending direction of the second extension；
Several first fins form the first fin unit, and several second fins form the second fin unit；
S3：By the oblique bending of pipeline between two adjacent fins unit, make the upper edges of adjacent fins with lower edge in level
It is flushed on direction.
8. heat exchanger according to claim 8, which is characterized in that first extension far from the first noumenon portion one
Side is along being recessed inwardly to form the first notch, and first passage is collectively formed in first notch, and second extension is far from institute
A side of the second body part is stated along being recessed inwardly to form the second notch, second channel is collectively formed in second notch；It is described
Method further comprises：
Heater strip is pressed into first passage and second channel and is combined fixation with fin.
9. heat exchanger according to claim 8, which is characterized in that first extension far from the first noumenon portion one
Side is along being recessed inwardly to form the first notch, and first passage is collectively formed in first notch, and second extension is far from institute
A side of the second body part is stated along being recessed inwardly to form the second notch, second channel is collectively formed in second notch；It is described
A side edge of the first noumenon portion far from first extension is recessed inwardly to form third notch, the common shape of third notch
At third channel, a side edge of second body part far from second extension is recessed inwardly to form the 4th notch, institute
It states the 4th notch and fourth lane is collectively formed；The method further includes：
Heater strip is pressed into first to fourth channel and is combined fixation with fin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810240325.5A CN108645076A (en) | 2018-03-22 | 2018-03-22 | A kind of tube-expanding type heat exchanger and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810240325.5A CN108645076A (en) | 2018-03-22 | 2018-03-22 | A kind of tube-expanding type heat exchanger and preparation method thereof |
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| CN105509369A (en) * | 2016-01-08 | 2016-04-20 | 浙江同星制冷有限公司 | Heating-plate-type heat exchanger |
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