CN107073658A - The joint construction of joint method and heat exchanger aluminum pipe of the heat exchanger aluminum pipe welding with solder and using its heat exchanger aluminum pipe - Google Patents
The joint construction of joint method and heat exchanger aluminum pipe of the heat exchanger aluminum pipe welding with solder and using its heat exchanger aluminum pipe Download PDFInfo
- Publication number
- CN107073658A CN107073658A CN201680002309.1A CN201680002309A CN107073658A CN 107073658 A CN107073658 A CN 107073658A CN 201680002309 A CN201680002309 A CN 201680002309A CN 107073658 A CN107073658 A CN 107073658A
- Authority
- CN
- China
- Prior art keywords
- aluminum pipe
- solder
- heat exchanger
- mother metal
- alloy mother
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
- B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
-
- 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
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
Abstract
The heat exchanger aluminum pipe welding of the present invention includes the alloy mother metal containing aluminum and zinc and the fusing point solder flux lower than the alloy mother metal with solder, when alloy mother metal is 100 mass %, the content of zinc in the alloy mother metal is in the range of 40~75 mass %, the content of solder flux is in the range of 10~25 mass %, is configured to be coated the wire rod of solder flux by alloy mother metal.Thereby, it is possible to which efficiently aluminum pipe is engaged with each other with good quality.
Description
Technical field
The aluminium of have the present invention relates to the heat exchanger of the setting of the outdoor unit in air-conditioning device, aluminum or aluminium alloy
The heat exchanger aluminum pipe welding solder that is used in the welding of pipe, use the solder heat exchanger aluminum pipe joint method and heat
The joint construction of exchanger aluminum pipe.
Background technology
The heat exchanger that the outdoor unit of air-conditioning device is set typically has the heat-transfer pipe for making refrigerant circulate and is installed on this
The fin of heat-transfer pipe.The material (copper pipe) of copper (or its alloy system) is used as heat-transfer pipe, as fin use aluminum (or its
Alloy system) material (aluminum fin-stock).
As the representational manufacturing process of this heat exchanger, for example, it can enumerate to be arranged and multiple fins and protect
Hold, multiple heat-transfer pipes, and then the process that multiple heat-transfer pipes are engaged with each other are installed in the way of making these fin insertions.It is used as general
The method that heat-transfer pipe is engaged with each other, it is however generally that use the engagement (welding) by the use of welding (for example, being used as aluminum pipe solder, one
As be JIS4047).
For example, there is a kind of heat exchanger of the process including by being welded to connect heat-exchange tube disclosed in patent document 1
Manufacture method.In the manufacture method, expansion processing (expansion processing work is carried out to the end of the first heat-exchange tube (copper)
Sequence), ring-type solder (copper) (solder insertion process) is the peripherally inserted to the end of the second heat-exchange tube (copper), these heat are handed over
Change tube end to be in contact with each other holding (holding process), pass through the contact mutual to these heat-exchange tubes of the heaters such as blowtorch and keep
Heated and ring-type solder is melted (heating process) in portion.Thus heat-exchange tube is connected to each other (engagement).
But, in heat exchanger field, in recent years, fin is not only, heat-transfer pipe also uses the material (aluminum pipe) of aluminum.Example
Such as, it is not air-conditioning device field, in automotive field, as heat exchanger, heat-transfer pipe and fin are also widely used aluminum
Material (full aluminum-made heat exchanger).In the manufacture of this automobile heat exchanger, the mutual welding of aluminum pipe uses soldering lug
(the sandwich structure body of aluminium alloy and solder), is carried out in heating furnace.
For example, there is one kind to weld aluminium without using solder flux in inactive gas atmosphere furnace disclosed in patent document 2
Method.As described in the document, in order to carry out aluminium welding, it is necessary to destroy the oxidation overlay film of aluminium surface, therefore, use
The solder flux welding of solder flux and the vacuum welding connection heated in a vacuum.In solder flux welding, in inactive gas atmosphere furnace
Middle use solder flux is simultaneously heated, still, worries that the flux residue produced after welding is impacted.In addition, in vacuum welding
Can be without using solder flux in method, still, vacuum furnace apparatus high price, its maintenance cost is also high.
Automobile heat exchanger is smaller with heat exchanger than the outdoor unit of air-conditioning device, therefore, it is possible to be carried out by heating furnace
Welding.But, outdoor unit heat exchanger is bigger than automobile heat exchanger, therefore, must in order to be welded in stove to aluminum pipe
Large-scale heating furnace must be used.In order to realize this large-scale heating furnace, it is necessary to huge equipment investment.Especially, such as patent text
Offer as described in 2, when using vacuum furnace apparatus, its equipment investment is more high.
When outdoor unit heat exchanger has aluminum pipe, from the viewpoint of avoiding cost from increasing, with the feelings with copper pipe
Condition is identical, can be using the method for directly heating engagement predetermined position (with reference to patent document 1).But, in the mutual weldering of aluminum pipe
In connecing, through hole may be produced in junction due to the residual of solder flux.
Because the through hole is in the state that the solder flux that is cured is blocked, therefore it cannot function as when checking the seepage of aluminum pipe
Location detection goes out.But, when actually making refrigerant circulate after inspection, solder flux is leached at leisure, therefore refrigerant can be from passing through
Through hole seepage.Thus, manufactured outdoor unit heat exchanger is not to be sampled inspection but need all to check, productivity
It is greatly reduced.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 10-292992 publications
Patent document 2：Japanese Unexamined Patent Publication 2013-123749 publications
The content of the invention
The present invention proposes to solve above-mentioned problem, it is intended that by solder by the outdoor unit of air-conditioning device
When the aluminum pipe that set heat exchanger has is engaged with each other, can effectively suppress the residual of solder flux, by aluminum pipe each other with
Good quality is effectively engaged.
In order to solve above-mentioned problem, set by the outdoor unit of heat exchanger aluminum pipe welding solder of the invention in air-conditioning device
It is used for the welding of aluminum pipe in the heat exchanger for the aluminum pipe with aluminum or aluminium alloy put.Heat exchanger aluminum pipe welding solder
Including：Alloy mother metal containing aluminum and zinc；The solder flux lower than the alloy mother metal with fusing point, when alloy mother metal is 100 mass %,
The content of zinc in the alloy mother metal is in the range of 40~75 mass %, and the content of solder flux is in 10~25 mass % model
In enclosing.In addition, heat exchanger aluminum pipe welding is configured to be coated the wire rod of solder flux by alloy mother metal with solder.
In addition, in the joint method of the heat exchanger aluminum pipe of the present invention, by heat exchanger aluminum pipe welding solder to described
The end holding part supply that the end by an aluminum pipe in aluminum pipe is inserted the end of another aluminum pipe and kept, by making this
Solder is melted, and aluminum pipe is engaged with each other.
And then, the joint construction of heat exchanger aluminum pipe of the invention be with solder by aluminum pipe be engaged with each other obtained by engage structure
Make, with the welded connection formed by heat exchanger aluminum pipe welding with solder.
According to said structure, in heat exchanger aluminum pipe welding solder, the temperature between its fusing point and the fusing point of aluminum pipe
Difference becomes big, heat time during therefore, it is possible to further extension engagement.Therefore, in joining process, the solder flux of wire internal is first
Melt, the development of backward alloy mother metal, thereafter alloy mother metal outside wire rod melt, therefore, it is possible to easily melt alloy mother
Material, and by the heating of longer time solder flux can be made first to spill.Thereby, it is possible to reduce the welded connection in junction
The generation of the defect such as through hole caused by the possibility of residual flux, the residual therefore, it is possible to suppress solder flux.The result is that can
Aluminum pipe is efficiently engaged with good quality each other.
In the present invention, the structure more than, plays following effect：By solder by the outdoor unit institute of air-conditioning device
When the aluminum pipe that the heat exchanger of setting has is engaged with each other, it can effectively suppress the residual of solder flux, by aluminum pipe each other with good
Quality is efficiently engaged.
Brief description of the drawings
Fig. 1 is the signal of one for having expansion tube department and expanding the heat exchanger aluminum pipe of frame portion for representing to use in the present invention
Property side view.
Fig. 2 be illustrate by the end of the aluminum pipe shown in Fig. 1 be combined each other one of end holding part of holding and
To the schematic side elevation for the structure for expanding frame portion supply solder.
Fig. 3 A are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using showing for wire bonding material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 3 B are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using showing for wire bonding material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 3 C are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using showing for wire bonding material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 3 D are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using showing for wire bonding material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 4 A are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using the pre- of boxing material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 4 B are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using the pre- of boxing material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 4 C are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using the pre- of boxing material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 4 D are one of the joint method for representing the heat exchanger aluminum pipe of the present invention, are welded with by using the pre- of boxing material
The schematic process figure for the example for expecting to supply aluminum pipe solder.
Fig. 5 is the X of the joint construction of the heat exchanger aluminum pipe for the result for being denoted as examples and comparative examples of the present invention
The figure of transmission of radiation picture.
Embodiment
It is set by outdoor unit of the heat exchanger aluminum pipe welding solder in air-conditioning device of the present invention, with aluminum or aluminium
It is used for the welding of aluminum pipe in the heat exchanger of the aluminum pipe of alloy.Heat exchanger aluminum pipe welding is included containing aluminum and zinc with solder
Alloy mother metal and the fusing point solder flux lower than the alloy mother metal, when alloy mother metal is 100 mass %, the zinc of the alloy mother metal contains
Amount is in the range of 40~75 mass %, and the content of solder flux is in the range of 10~25 mass %.Heat exchanger aluminum pipe is welded
Connect the wire rod for being configured to that solder flux is coated by alloy mother metal with solder.
According to structure, in being formed as coating the aluminium solder of wire rod of solder flux, in alloy mother metal unlike prior art
Containing silicon, and contain the zinc in the range of 40~75 mass %.Thus, the fusing point of alloy mother metal is higher than solder flux, and can be than existing
There is the fusing point of the solder of aluminium-silicon class of technology low.The result is that the temperature difference of the fusing point of aluminum pipe and the fusing point of solder can be increased,
Heat time during therefore, it is possible to further extension engagement.
Therefore, in joining process, the solder flux of wire internal first melts and developed to alloy mother metal, afterwards, outside wire rod
Alloy mother metal melt, therefore, it is possible to easily melt alloy mother metal, also, can fill solder flux by the heating of longer time
Spill with dividing.Thereby, it is possible to reduce the possibility in the welded connection residual flux of junction, therefore, it is possible to suppress weldering
The generation of the defect such as through hole caused by the residual of agent.The result is that aluminum pipe efficiently can be connect with good quality each other
Close.
It is in the heat exchanger aluminum pipe welding of said structure with the content of the zinc in solder or in alloy mother metal
In the range of 65~75 mass %.
According to said structure, the content of the zinc in alloy mother metal is in the range of 65~75 mass %, therefore, it is possible to enter
One step reduces its fusing point.Heat time during therefore, it is possible to further extension engagement, therefore, it is possible to more effectively suppress solder flux
Residual, aluminum pipe can expeditiously be engaged with good quality each other.
In addition, in the heat exchanger aluminum pipe welding solder of said structure, alloy mother metal can also also contain silicon.
According to said structure, because also containing silicon in alloy mother metal, the mobility of solder can be improved, can be made
The quality of solder is better.
In addition, in the heat exchanger aluminum pipe welding solder of said structure, solder flux can also be fusing point than alloy mother metal
Low metal salt.
According to said structure, solder flux is the metal salt of low melting point, therefore, heating when solder flux is by engaging and flow well
It is dynamic.Thereby, it is possible to remove the oxidation overlay film of aluminium well.
In addition, in the heat exchanger aluminum pipe welding solder of said structure, solder flux can also be fluoaluminic acid alkali metal salt.
According to said structure, solder flux is fluoaluminic acid alkali metal salt, therefore, it is possible to avoid the possibility that solder flux corrodes aluminium.
In addition, in the joint method of the heat exchanger aluminum pipe of the present invention, by heat exchanger aluminum pipe welding solder to aluminum pipe
In, the end that the end of an aluminum pipe is inserted to another aluminum pipe and the end holding part supply kept, by making the weldering
Material is melted, and aluminum pipe is engaged with each other.
According to said structure, because using above-mentioned solder of the invention, its fusing point is lower than prior art, therefore,
Heat time during engagement can be made to extend compared with prior art.Through hole etc. caused by residual thereby, it is possible to suppress solder flux
The generation of defect, therefore, it is possible to realize the quality of the mutual junction of aluminum pipe better, and can make the efficiency of engagement
More preferably.
In the joint method of the heat exchanger aluminum pipe of said structure or, in advance heating end holding part
Solder is supplied by being now welded with material afterwards, or is heated after solder to be set to end holding part pre-add solder, thus
The solder is melted, and to holding part welded connection as formed by the solder engagement melted in end is heated,
Solder flux is set to be spilt from the welded connection.
According to said structure, either handwork or machine automatization operation can use the heat exchange of the present invention
Aluminum pipe is engaged with each other by device Al pipe butt welding well with solder.
In addition, in the joint method of the heat exchanger aluminum pipe of said structure, end holding part turns into aluminum pipe
End can be inserted into the expansion tube department for expanding caliber of the end of another aluminum pipe, and the open-ended peripheral part of the expansion tube department turns into
The expansion frame portion that its caliber further expands.
According to said structure, caliber is set in the end of an aluminum pipe than expansion frame portion that expansion tube department expands.Thus, example
Such as, in the case of pre-add solder, the setting of solder is improved, also, either pre-add solder or is now welded with material, and solder flux is not
Easily overflowed from welded connection.And then, when heating solder, produce from the heat transfer for expanding frame portion, therefore also can be higher
Effect ground melts solder.
And then, in the present invention, in addition to the joint construction that aluminum pipe is engaged with each other with solder, the joint construction is
The joint construction of the heat exchanger aluminum pipe of structure with the welded connection formed by heat exchanger aluminum pipe welding with solder.
According to said structure, because the possibility in the welded connection residual flux of joint construction can be reduced,
The generation of the defect such as through hole caused by the residual of solder flux can be suppressed.Efficiently connect with better quality thereby, it is possible to realize
The joint construction of the aluminum pipe of conjunction.
Below, the representational embodiment to the present invention is specifically explained, and still, the invention is not restricted to this implementation
Mode.
[heat exchanger aluminum pipe welding solder]
The solder of the present invention is used for the welding for the aluminum pipe that the heat exchanger set by the outdoor unit of air-conditioning device has.
In the present embodiment, for convenience of description, the aluminum pipe that heat exchanger has is referred to as " heat exchanger aluminum pipe ".Therefore, this hair
Bright solder is " heat exchanger aluminum pipe welding solder ".In addition, in the following description, for convenience, sometimes by " heat exchange
Device aluminum pipe " is referred to as " aluminum pipe ", in addition, being sometimes referred to as heat exchanger aluminum pipe welding " aluminum pipe solder " with solder.
As described above, the aluminum pipe solder of the present invention contains alloy mother metal and solder flux, it is configured to be coated by alloy mother metal and welds
The wire rod of agent.
The alloy mother metal that aluminum pipe solder contains contains aluminium (Al) and zinc (Zn) as described above.It is 100 matter in alloy mother metal
When measuring %, the content of the zinc in the alloy mother metal is in the range of 40~75 mass %, preferably 65~75 mass %
In the range of.If alloy mother metal is only made up of aluminum and zinc, the content of aluminium is in the range of 25~60 mass %, is preferably
In the range of 25~35 mass %.If the content of zinc is in the range of 40~75 mass %, can be by aluminum pipe solder
Fusing point be set as within the temperature range of 520~580 DEG C.In addition, for convenience of description, will be realized by adjusting the content of zinc
Aluminum pipe be referred to as " targeted melting point " with the fusing point of solder.
When the content of zinc in alloy mother metal is less than 40 mass %, the targeted melting point of aluminum pipe solder can more than 580 DEG C,
It can not expand poor with the fusing point of aluminium.On the other hand, when the content of zinc is more than 75 mass %, targeted melting point reduction, not only with weldering
The fusing point of agent is approached, and aluminum pipe solder may not fully spread in engagement.Now, shown in embodiment as be described hereinafter,
Agglomerate is produced with solder, it is possible to can not form good welded connection in aluminum pipe.In addition, if the content of zinc is 65 matter
More than % is measured, then aluminum pipe with the targeted melting point of solder can be adjusted to less than 540 DEG C.Thereby, it is possible to further increase aluminum pipe
Fusing point and aluminum pipe solder targeted melting point temperature difference, therefore preferably.
The composition (other compositions) in addition to aluminum and zinc can also be contained in alloy mother metal.Other compositions it is specific
Species is not particularly limited, as long as without prejudice to is to the various physical properties required by aluminum pipe solder, especially alloy mother metal
The decline of fusing point, it becomes possible to use metal that can be mixed with the alloy of aluminum and zinc etc..Representational silicon (Si) can be enumerated.It is logical
Cross containing silicon, it is possible to increase the mobility of aluminum pipe solder.The content of silicon is not particularly limited, as long as in desired by without prejudice to
Targeted melting point realization (fusing point turns into the temperature range near targeted melting point), and the scope of good mobility can be assigned
It is interior.In addition, never make aluminum pipe solder corrosion resistance be deteriorated from the viewpoint of, alloy mother metal preferably do not contain copper (Cu),
Iron (Fe) and nickel (Ni).
Solder flux contained by aluminum pipe solder can be properly selected using the low-melting material than alloy mother metal.Aluminum pipe is used
The content of solder flux in solder is in the range of 10~25 mass %.Specific solder flux species is not particularly limited, energy
Enough enumerate the fusing point metal salt lower than alloy mother metal.More specifically, fluoaluminic acid caesium (Cs can for example be enumeratedXAlF3+X), fluorine aluminium
Sour potassium (KXAlF3+X) etc. fluoaluminic acid alkali metal salt (X=1~2).One kind can be used only in they, can also be used in mixed way two kinds
More than.
If solder flux is fluoaluminic acid alkali metal salt, because the corrosive elements such as not chloride, need not connect to formation
Close after part is carried out and clean.As long as in addition, not carrying out obstacle to rear cleaning tape, then as solder flux, can also be applicable aluminium chloride
(AlCl3) etc. known to chloride-based solder flux.
Aluminum pipe is configured to be coated the wire rod of solder flux with alloy mother metal with solder, still, is used as the concrete structure of wire rod
It is not particularly limited.The external diameter of wire rod is generally 1.6mm, still, when being engaged by being now welded with material, is improved from workability
From the viewpoint of or 1.8 thicker~2.0mm in the range of.On the contrary, according to engaging condition etc., the external diameter of wire rod
1.6mm can be less than.
Diameter or alloy mother metal for the flux portion in wire rod thickness (external diameter of wire rod and flux portion it is straight
The difference in footpath) also it is not particularly limited, as long as in known scope.In addition, the forming method of wire rod is also without special
Limit, as long as the wire rod for the duplex that solder flux is coated with alloy mother metal can be manufactured, then can use in aluminium class solder
Known method in field.
[heat exchanger aluminum pipe]
Then, the aluminum pipe that is engaged in the present invention using above-mentioned aluminum pipe with solder is specifically described referring to Figures 1 and 2
One of structure.In addition, in the following description, identical accompanying drawing mark is marked to identical or corresponding key element in whole figures
Note, omits its explanation repeated.
The aluminum pipe as coalesced object is the pipe arrangement (heat exchanger aluminum pipe) that above-mentioned heat exchanger has in the present invention.Should
Heat exchanger aluminum pipe is aluminum or aluminium alloy system, and its purposes is not particularly limited, still, is typically that circulation internally is freezed
The heat-transfer pipe of agent.The concrete structure of heat exchanger is not particularly limited, and is the known structure with heat-transfer pipe and fin.
The heat-transfer pipe and fin of the heat exchanger of the present invention are aluminum.In addition, beyond heat exchanger can be containing heat-transfer pipe and fin
Part, can also include heat-transfer pipe beyond aluminum pipe.
In order to which heat exchanger aluminum pipe is engaged with each other with aluminum pipe with solder, is formed and close the respective end of heat exchanger aluminum pipe
The end holding part kept together, sets solder in the end holding part or supplies solder to the end holding part.
The forming method of end holding part is not particularly limited, can be so that the state that end is fitted to each other is kept.By end
The state ordinatedly kept include end is in contact with each other coordinate state, also include do not contact each other end match somebody with somebody
The state of conjunction.In addition, from the viewpoint of end holding part is realized, known instrument etc. can also be used.
In the present embodiment, as one of representational structure of end holding part, as shown in figure 1, using energy
The expansion tube department 11a of enough ends that the end of an aluminum pipe 11 is inserted to another aluminum pipe 12 structure.That is, in present embodiment
In, end holding part turns into the structure for the end that the end of an aluminum pipe 11 is inserted into another aluminum pipe 12.The expansion tube department
11a is to enable to insert the mode of the end of another aluminum pipe 12 to expand the part of caliber, its specific structure
It is not particularly limited.
So, if the end of an aluminum pipe 11 turns into expansion tube department 11a, as shown in Fig. 2 only being inserted in expansion tube department 11a
End holding part 10 can be formed by entering the end of another aluminum pipe 12.In addition, as depicted in figs. 1 and 2, carrying out the He of aluminum pipe 11
During 12 engagement, an aluminum pipe 11 can be erected in the way of upside and be fixed on end plate 13 by expansion tube department 11a.
Here, expansion tube department 11a can be from expansion tube department 11a root (position being connected with the main body of aluminum pipe 11) to end
Portion's opening has the structure of identical caliber, still, as depicted in figs. 1 and 2, and expansion tube department 11a open-ended peripheral part is excellent
Hank the expansion frame portion 11b being further enlarged for its caliber.
For example, as shown in Fig. 2 the aluminum pipe of wire rod is kept with solder (wire bonding material 20A) to end by being now welded with material
When position 10 is supplied, it is located at wire bonding material 20A front end and expands on frame portion 11b.If in addition, as shown in Fig. 2 by pre-
Be welded with material and the aluminum pipe of ring-type is arranged at end holding part 10 with solder (boxing material 20B), then can be on frame portion 11b be expanded
It is easy to set up boxing material 20B.In addition, being described below on being now welded with material and pre-add solder.
The caliber for expanding frame portion 11b is not particularly limited, and the caliber than expansion tube department 11a is big.Although also depending on aluminium
The caliber of the main body of pipe 11, but if the caliber for making expansion tube department 11a is R1, the caliber for making expansion frame portion 11b is R2, then caliber R1
Difference with caliber R2 is more than 1.0mm, preferably more than 2.5mm.That is, from the expansion frame portion 11b's in terms of expansion tube department 11a
It is more than 0.5mm, preferably more than 1.25mm that outside, which expands width Rb,.The caliber for making the main body of aluminum pipe 11 is R0, then makees
For representative example, R0=6.35mm can be enumerated as the caliber of main body, now, can be lifted as expansion tube department 11a caliber
Go out R1=6.5mm, be more than R2=7.5mm as expansion frame portion 11b caliber R2, preferably more than 9.0mm.
As shown in Fig. 2 when engaging aluminum pipe 11 and 12, using heater (heating arrangements) fire end such as blowtorch 30
Portion's holding part 10, still, specific heating position are not particularly limited.Representational heating position is end maintaining part
The donor site of the aluminum pipe solder (wire bonding material 20A, boxing material 20B) of position 10 sets position can (position in reference picture 2
Blowtorch 30), but it is also possible to heat than aluminum pipe solder donor site or position position on the lower is set (under reference picture 2
The blowtorch 30 of position).
In the present embodiment, the expansion tube department 11a of aluminum pipe 11 is provided with expansion frame portion 11b, aluminum pipe solder is to expansion
Supply or be arranged on frame portion 11b on expansion frame portion 11b.Contain solder flux as described above in aluminum pipe solder, still, the weldering
Agent needs to be removed as much as possible with solder from the aluminum pipe of melting.In order to fully remove deflux, with aluminum pipe 11 (and aluminum pipe 12) no
The degree of meeting thermal deformation carries out long-time heating.Because aluminum pipe with solder to expand frame portion 11b on supply or be arranged on expansion frame
On portion 11b, therefore, from the viewpoint of more stable heating is realized, it can use by making from the heat transfer for expanding frame portion 11b
The method that aluminum pipe solder melts.Therefore, in the present embodiment, as preferred heating means, it can enumerate shown in Fig. 2
The method for heating expansion tube department 11a expansion frame portion 11b lower section (adjacent bottom portions of end holding part 10).
[joint method of heat exchanger aluminum pipe]
Below, reference picture 3A~Fig. 3 D and Fig. 4 A~Fig. 4 D to above-mentioned use aluminum pipe with solder by heat exchanger aluminum pipe that
The method of this welding, the joint method of heat exchanger aluminum pipe i.e. of the invention are specifically explained.
In the joint method of the heat exchanger aluminum pipe of the present invention, above-mentioned aluminum pipe solder is kept to above-mentioned end
Position 10 (position for making the end of aluminum pipe 11 and 12 be in contact with each other and keep) is supplied, by making the aluminum pipe be melted with solder, will
Aluminum pipe is engaged with each other.
Here, being not particularly limited to the supply aluminum pipe of end holding part 10 with the method for solder, still, representativeness is used as
Example can enumerate in advance heating (preheating) end holding part 10 after by be now welded with material supply aluminum pipe solder side
Method, or the method for being set to be heated after pre-add solder with solder by aluminum pipe in end holding part 10.Now it is welded with the confession of material
The welding of handwork can be applied to method, the supply method of pre-add solder can be applied to machine automatization welding.
Aluminum pipe solder is so supplied, is allowed to melt by heating.The aluminum pipe of melting flows into end holding part with solder
Between 10 aluminum pipe 11 and 12, welded connection is formed.Here, when remaining solder flux in welded connection, may be in engagement
Position produces through hole.Therefore, by heating end holding part 10 for a long time as far as possible, solder flux is made to be leaked from welded connection
Go out.Generation thus, it is possible to fully suppress the defects such as through hole.
Fig. 3 A~Fig. 3 D are schematically shown by being now welded with the example for expecting that operation by hand engages aluminum pipe 11 and 12.First,
As shown in Figure 3A, aluminum pipe 12 is inserted to the expansion tube department 11a of aluminum pipe 11, is consequently formed end holding part 10, it is advance with blowtorch 30
Heat the expansion tube department 11a of aluminum pipe 11.In this embodiment, as described above, heating expansion tube department 11a expansion frame portion 11b lower section (end
The adjacent bottom portions of holding part 10) (reference picture 2).Thus, preheating end holding part 10 effectively to melt aluminum pipe weldering
Material.
Afterwards, as shown in Figure 3 B, wire bonding material 20A front end is located on the expansion frame portion 11b of end holding part 10, lead to
Aluminum pipe solder is supplied after being now welded with material.Wire bonding material 20A is the structure that solder flux 22 is coated with alloy mother metal 21.Afterwards, such as Fig. 3 C
Shown, wire bonding material 20A melts.The fusing point as described above of solder flux 22 is lower than alloy mother metal 21, therefore, and internal solder flux 22 is than surrounding
Alloy mother metal 21 first melts.Alloy mother metal 21 is above-mentioned aluminium-zinc class alloy, and the oxidation overlay film from aluminium is produced on its surface.It is molten
The solder flux 22 of solution is applied and extended, and thereby, it is possible to the oxidation overlay film on the surface for removing alloy mother metal 21, therefore alloy mother metal 21 is good
Melt well and melt in end holding part 10 and extend.
The alloy mother metal 21 for melting extension in end holding part 10 flows into the gap being formed between aluminum pipe 11 and 12, but
It is in this condition, solder flux 22 may to be remained in alloy mother metal 21.Therefore, as described above, by continuing to be entered by blowtorch 30
Row heating, spills the solder flux 22 in alloy mother metal 21.Thereby, it is possible to substantially remove deflux 22 from alloy mother metal 21.Such as
Shown in Fig. 3 D, the natural cooling after, in end, the gap of the aluminum pipe 11 and 12 of holding part 10 can be formed substantially
Welded connection 23 without solder flux 22.
Fig. 4 A~Fig. 4 D are schematically shown engages the He of aluminum pipe 11 by pre-add solder with mechanical (manipulator etc.) automatic job
12 example.First, as shown in Figure 4 A, aluminum pipe 12 is inserted to the expansion tube department 11a of aluminum pipe 11, is consequently formed end holding part
10, but the not pre- thermally mounting boxing material 20B on expansion frame portion 11b.Boxing material 20B is also same with wire bonding material 20A, turns into
The wire rod of the structure of solder flux 22 is coated with alloy mother metal 21.
Afterwards, as shown in Figure 4 B, expansion tube department 11a expansion frame portion 11b lower section (end holding part is heated with blowtorch 30
10 adjacent bottom portions).At this moment, make the flame of blowtorch 30 strong or weak, enabling being preheating to boxing material 20B can melt and aluminum pipe 11
The indeformable temperature of expansion tube department 11a.The strong and weak change of the flame is carried out by the program stored in controller (not shown)
Control.
Afterwards, as shown in Figure 4 C, the formal heating of blowtorch 30 is carried out, thus, the boxing material 20B expanded on frame portion 11b melts
Solution.Now, as described above, being that solder flux 22 melts and applies extension first, the oxidation overlay film on the surface of alloy mother metal 21 is removed, because
This, alloy mother metal 21 melts and melted in end holding part 10 and extends well.Afterwards, continue the heating of blowtorch 30 and make conjunction
Solder flux 22 in golden mother metal 21 is spilt.Thereby, it is possible to substantially remove deflux 22 from alloy mother metal 21.It is naturally cold after
But, as shown in Figure 4 D, the weldering for being substantially free of solder flux 22 can be formed in the gap of the aluminum pipe 11 and 12 of end holding part 10
Connection section 23.
So, in the present invention, as aluminum pipe solder, aluminium-zinc containing the zinc in the range of 40~75 mass % is used
Class alloy mother metal, as solder flux, uses the solder flux in the range of fusing point 10~25 mass % lower than the aluminium-zinc class alloy mother metal.
Therefore, the joint construction of the heat exchanger aluminum pipe obtained has the welded connection formed by above-mentioned aluminum pipe with solder.Thus, exist
Through hole caused by the possibility reduction of the welded connection residual flux of joint construction, the residual therefore, it is possible to suppress solder flux
Etc. the generation of defect.The result is that the joint construction of the aluminum pipe efficiently engaged can be realized with better quality.
Especially in the present invention, aluminum pipe solder can be sufficiently low in the fusing point compared to the aluminum pipe as coalesced object
Temperature melt.Thus, difficulty step-down, workability raising compared with the solder of existing aluminium-silicon class of welding, and be suitable to
Automation.For this point, illustrated so that the difficulty of welding is lower, exemplified by copper pipe welding.
At present, in the heat exchanger that the outdoor unit of air-conditioning device has, copper pipe is used as tubing such as heat-transfer pipes.
When these copper pipes are welded to one another, the oxidation overlay film chemically highly stable as copper will not produce aluminium, therefore, in brazing
Solder flux need not be used in material.In addition, fusing point of the fusing point than copper pipe of the phos copper (Cu-P) as representational spelter solder
It is low more than 300 DEG C.In addition, when copper pipe to be heated to the temperature of solder melting, due to heat radiation, copper pipe reddens.Thus, example
Such as when operation is welded by hand, operator sees that being heated into copper pipe reddens, and can make copper pipe nondeforming melt solder.
Unlike this, in the mutual welding of aluminum pipe, to destroy oxidation overlay film and need to use solder flux.In addition, general aluminium
Fusing point and copper of the temperature difference compared to spelter solder of the fusing point of solder (the Al-Si classes alloy that with the addition of silicon) and the fusing point of aluminum pipe
The temperature difference of the fusing point of pipe is smaller.Moreover, the temperature that solder melting is heated to even if by aluminum pipe not can be appreciated that because heat radiation is led yet
The discoloration of cause, especially cannot see that apparent change.Thus, in welding, grown in order to avoid the residual of solder flux
When time heats, it is possible to which as the high temperature near the fusing point for reaching aluminum pipe, aluminum pipe is deformed.In order to avoid aluminum pipe is deformed and is contracted
During the short heat time, worry that solder flux can not flow out and remain from welded connection.Solder flux residual causes to produce in welded connection
Through hole.
The inspection for the junction that through hole passes through aluminum pipe is difficult to find caused by the residual of solder flux.It is used as the engagement of aluminum pipe
The inspection method of quality is general there be not inspection using helium leak test inspection or water.For example in helium leak test inspection, by junction
Portion is formed as after vacuum state from outside filling helium, has detected whether that helium leaks out to outside.When checking, solder flux does not melt
Solution, therefore, through hole is filled by solder flux.Therefore, the seepage of helium will not be detected, is judged as existing in junction closed
Property.But, afterwards, when the refrigerant is circulated in aluminum pipe, solder flux is leached from through hole bit by bit, therefore through hole is opened
And occur the leakage of refrigerant.Thus, manufactured outdoor unit heat exchanger is not to be sampled inspection but need whole
Check, productivity is significantly low.
Unlike this, aluminum pipe of the invention with solder as described above as alloy mother metal without using existing silicon, and using containing
There is aluminium-zinc class alloy of the zinc in the range of 40~75 mass %.Thus, the fusing point of alloy mother metal can be higher than solder flux, and than existing
The fusing point of some aluminium-silicon class solder is low.The result is that the temperature difference of the fusing point of aluminum pipe and the fusing point of solder can be increased, therefore
Heat time during engagement can further be extended.
Thus, in joining process, the solder flux of wire internal first melts and extended to alloy mother metal, afterwards, outside wire rod
Alloy mother metal melt, therefore easily melt alloy mother metal, also, by the heating of longer time solder flux can be made first to spill.
Thereby, it is possible to reduce the possibility that solder flux residues in the welded connection of junction, led therefore, it is possible to the residual that suppresses solder flux
The generation of the defects such as the through hole of cause.The result is that aluminum pipe efficiently can be engaged with good quality each other.
(embodiment)
The present invention is further illustrated based on embodiment and comparative example, still, the invention is not restricted to this.This area
Technical staff can carry out various changes, modifications and variations without departing from the scope of the present invention.
(embodiment 1)
As shown in figure 1, being fixed with length 15.5mm, caliber R0=6.35mm, expansion tube department 11a caliber R1=in end plate 13
6.5mm, expansion frame portion 11b caliber R2=7.5mm aluminum pipe 11.To the expansion tube department 11a insertion calibers R0=of the aluminum pipe 11
The end of 6.35mm aluminum pipe 12.Thus, as shown in Fig. 2 constituting the end holding part 10 of aluminum pipe 11 and 12.
In addition, as aluminum pipe solder, being ready to pass through being coated solder flux 22 with alloy mother metal 21 and being formed as line footpath 1.6mm's
The wire bonding material 20A of wire rod.The group that alloy mother metal 21 in wire bonding material 20A is the mass % of aluminium (Al) the 35 and mass % of zinc (Zn) 65
Into its targeted melting point is 540 DEG C.In addition, wire bonding material 20A solder flux 22 is fluoaluminic acid caesium (CsXAlF3+X, X=1 or 2), its
Active temperature is 520 DEG C.In addition, wire bonding material 20A weight is, alloy mother metal 21 is that 82 mass %, solder flux 22 are 18 mass %.
Then, as shown in Figure 3A, the expansion frame portion 11b of end holding part 10 bottom is heated by using blowtorch 30, is entered
The preheating of end holding part 10 is gone.Afterwards, as shown in Figure 3 B, it is located at wire bonding material 20A front end to expand on frame portion 11b,
Continue the heating of blowtorch 30.Thus, as shown in Figure 3 C, wire bonding material 20A melts, therefore, the aluminum pipe 11 of holding part 10 in end
With 12 between flowed into aluminum pipe solder.By continuing to heat, as described above, making solder flux 22 be flowed out from alloy mother metal 21.
Afterwards, by stop heating and natural cooling, obtain be formed with using aluminum pipe solder it is welded connection 23,
The joint construction of the heat exchanger aluminum pipe of embodiment 1.Fig. 5 represents the X-ray transmission picture of the joint construction.In addition, in Figure 5,
The content of aluminum and zinc (or silicon) in alloy mother metal is abbreviated as " % ", it means that " quality % ".
(embodiment 2)
Except as wire bonding material 20A, alloy mother metal 21 uses aluminium (Al) the 25 mass % and mass % of zinc (Zn) 75 composition
Material beyond, similarly to Example 1, obtain embodiment 2 heat exchanger aluminum pipe joint construction.In addition, alloy mother metal 21
Targeted melting point be 520 DEG C.Fig. 5 represents the X-ray transmission picture of the joint construction.
(comparative example 1)
Except as wire bonding material 20A, alloy mother metal 21 is existing using aluminium (Al) the 88 mass %'s and mass % of silicon (Si) 12
Beyond the material of composition, similarly to Example 1, the joint construction of the heat exchanger aluminum pipe of comparative example 1 is obtained.In addition, alloy is female
The targeted melting point of material 21 is 580 DEG C.In this comparative example 1, multiple joint constructions have been manufactured, but including qualified engagement
Construction and underproof joint construction.Fig. 5 is represented for the respective X-ray transmission picture of qualified and underproof joint construction.
(comparative example 2)
Except as wire bonding material 20A, alloy mother metal 21 uses aluminium (Al) the 12 mass % and mass % of zinc (Zn) 88 comparison
Beyond the material of composition, similarly to Example 1, the joint construction of the heat exchanger aluminum pipe of comparative example 2 is obtained.In addition, alloy is female
The targeted melting point of material 21 is 450 DEG C.Fig. 5 represents the X-ray transmission picture of the joint construction.
(contrast of embodiment and comparative example)
In the X-ray transmission picture of the joint construction shown in Fig. 5, big material or the big material of thickness is numbered for atom
For, it is black image because the transmissivity of X-ray is small.Caesium from solder flux 22 or the zinc from alloy mother metal 21 with
Aluminium, which is compared, seems more black.
It can be seen from the result of the joint construction of the Examples 1 and 2 shown in Fig. 5, if welded using the aluminum pipe of the present invention
Material, then in the X-ray transmission picture of resulting joint construction, will not absorb the picture of the black from solder flux 22 or from not having
There is picture of black of alloy mother metal 21 of melting etc..Thus, do not formed and passed through caused by the residual of solder flux 22 in junction
Through hole, in addition, also not forming block group of alloy mother metal 21 etc..
Thus, it can be known that the joint construction of Examples 1 and 2 can be realized and existing qualified (certified products of comparative example 1)
The same good welding of joint construction.On the other hand, when having used existing aluminium-silicon class solder, although as comparative example 1
Qualified joint construction can realize good welding like that, but as the defective work of comparative example 1, can absorb solder flux
The picture of black caused by 22 residual, moreover, the picture of black existing up and down throughout joint construction (expansion tube department 11a).Thus
Understand, through hole is formed with the underproof joint construction of comparative example 1, it is impossible to be sufficiently carried out welding.
In addition, it was found from the result of the joint construction of comparative example 2, even aluminium-zinc class solder, in containing than super for zinc
When crossing 75 mass %, therefore the targeted melting point of alloy mother metal 21, will not form good weldering in junction also below 520 DEG C
Connection section 23, confirms the residual (picture of the black of upper right) for having block to roll into a ball.In addition, do not represented in Fig. 5 result, still,
Even the solder of aluminium-zinc class, in zinc when containing than less than 40 mass %, targeted melting point is also same with 580 DEG C of comparative example 1
Deng or for more than it, therefore, with comparative example 1 also it is possible to which the defective work to form through hole can be produced.
Additionally, this invention is not limited to the record of embodiment, it can be carried out in the scope shown in right each
The change of various kinds is planted, reality respectively obtained by disclosed technical scheme in different embodiments and multiple variations is combined as
The mode of applying is included in the technical scope of the present invention.
Industrial utilizability
The present invention can be widely applicable for the heat exchanger field that the outdoor unit of air-conditioning device has, and especially manufacture
Heat exchanger field with aluminum pipe.
Description of reference numerals
10 end holding part
11 aluminum pipes
11a expansion tube departments
11b expands frame portion
12 aluminum pipes
13 end plates
20A wire bonding material
20B boxing material
21 alloy mother metals
22 solder flux
23 welded connection
30 blowtorch.
Claims (9)
- It is set by its outdoor unit in air-conditioning device, closed with aluminum or aluminium 1. a kind of heat exchanger aluminum pipe welding solder It is used for the welding of the aluminum pipe in the heat exchanger of the aluminum pipe of gold system, the heat exchanger aluminum pipe welding solder is characterised by：Including alloy mother metal and fusing point containing the aluminum and zinc solder flux lower than the alloy mother metal,When the alloy mother metal is 100 mass %, the content of the zinc in the alloy mother metal is in 40~75 mass %'s In the range of,The content of the solder flux is in the range of 10~25 mass %,The heat exchanger aluminum pipe welding is configured to be coated the wire rod of the solder flux by the alloy mother metal with solder.
- 2. heat exchanger aluminum pipe welding solder as claimed in claim 1, it is characterised in that：The content of the zinc in the alloy mother metal is in the range of 65~75 mass %.
- 3. heat exchanger aluminum pipe welding solder as claimed in claim 1, it is characterised in that：The alloy mother metal also contains silicon.
- 4. heat exchanger aluminum pipe welding solder as claimed in claim 1, it is characterised in that：The solder flux is the fusing point metal salt lower than the alloy mother metal.
- 5. heat exchanger aluminum pipe welding solder as claimed in claim 4, it is characterised in that：The solder flux is fluoaluminic acid alkali metal salt.
- 6. a kind of joint method of heat exchanger aluminum pipe, it is characterised in that：Heat exchanger aluminum pipe welding described in claim 1 is supplied to the end by an aluminum pipe in the aluminum pipe with solder The end holding part inserted the end of another aluminum pipe and kept, by melting the solder, the aluminum pipe is engaged with each other.
- 7. the joint method of heat exchanger aluminum pipe as claimed in claim 6, it is characterised in that：The solder is supplied by way of being now welded with material after the end holding part is heated in advance, or in the end Holding part is set after solder in the way of pre-add solder and heated, and thus melts the solder,And end holding part welded connection as formed by the solder engagement melted is heated, makes institute Solder flux is stated to spill from the welded connection.
- 8. the joint method of heat exchanger aluminum pipe as claimed in claim 6, it is characterised in that：The end that the end holding part is formed as an aluminum pipe can be inserted into the expansion of the end of another aluminum pipe The expansion tube department of caliber,The open-ended peripheral part of the expansion tube department turns into the expansion frame portion that its caliber is further enlarged.
- 9. a kind of joint construction of heat exchanger aluminum pipe, it is the joint construction that the aluminum pipe is engaged with each other with solder, It is characterized in that：With the welded connection formed using the heat exchanger aluminum pipe welding described in claim 1 with solder.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-212438 | 2015-10-29 | ||
| JP2015212438A JP6587098B2 (en) | 2015-10-29 | 2015-10-29 | Brazing material for brazing heat exchanger aluminum tube, joining method of aluminum tube using heat exchanger, and joining structure of aluminum tube for heat exchanger |
| PCT/JP2016/004108 WO2017073003A1 (en) | 2015-10-29 | 2016-09-09 | Brazing material for brazing heat-exchanger aluminum pipe, method for joining heat-exchanger aluminum pipe using same, and joint structure of heat-exchanger aluminum pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107073658A true CN107073658A (en) | 2017-08-18 |
| CN107073658B CN107073658B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680002309.1A Active CN107073658B (en) | 2015-10-29 | 2016-09-09 | Solder for welding heat exchanger aluminum pipe, and method and structure for joining heat exchanger aluminum pipe using same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6587098B2 (en) |
| CN (1) | CN107073658B (en) |
| WO (1) | WO2017073003A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953902A (en) * | 2018-09-27 | 2020-04-03 | 株式会社能率 | Heat exchanger and method for manufacturing the same |
| CN113167553A (en) * | 2018-11-20 | 2021-07-23 | 株式会社电装 | Heat exchanger |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6338002B1 (en) * | 2017-09-20 | 2018-06-06 | 千住金属工業株式会社 | Piping joining method |
| CN114029576B (en) * | 2020-09-08 | 2023-03-21 | 青岛海信日立空调系统有限公司 | Method for welding opening of expansion valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107073658B (en) | 2020-05-22 |
| WO2017073003A1 (en) | 2017-05-04 |
| JP6587098B2 (en) | 2019-10-09 |
| JP2017080783A (en) | 2017-05-18 |
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