CN102049586B - Method for connecting coil with heat exchanger shell in aluminum alloy heat exchanger of gas water heater - Google Patents
Method for connecting coil with heat exchanger shell in aluminum alloy heat exchanger of gas water heater Download PDFInfo
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- CN102049586B CN102049586B CN 200910193655 CN200910193655A CN102049586B CN 102049586 B CN102049586 B CN 102049586B CN 200910193655 CN200910193655 CN 200910193655 CN 200910193655 A CN200910193655 A CN 200910193655A CN 102049586 B CN102049586 B CN 102049586B
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- heat exchanger
- exchanger shell
- coil pipe
- aluminum alloy
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Abstract
The invention relates to a method for connecting a coil with a heat exchanger shell in an aluminum alloy heat exchanger of a gas water heater. The method is technically characterized by comprising the following steps: step 1, attaching the coil formed with a desired size to the outer wall of the heat exchanger shell; positioning and clamping the coil on the outer wall of the heat exchanger shell by welding two ends of spaced positioning fasteners to the outer wall of the heat exchanger shell to form tank sections, wherein the positioning fasteners are made of brazed brazing filler metal; and step 2, delivering the tank sections to a brazing furnace, integrally welding the tank sections until the positioning fasteners are melted in the brazing furnace, and fastening the coil to the outer wall of the heat exchanger shell after brazing. The method has the characteristics of effectively protecting the coil and the heat exchanger shell from being damaged after brazing, improving the product quality, and the like.
Description
Technical field: the present invention relates to the method for attachment of coil pipe and heat exchanger shell in a kind of gas heater aluminum alloy heat exchanger.
Background technology: in the prior art, coil pipe and heat exchanger shell have two kinds of methods of attachment usually in the Al-alloy heat exchanger of gas heater: a kind of is to use anchor clamps that coil pipe and heat exchanger shell are fixed, make coil pipe and heat exchanger shell close contact, then integral body is delivered to the soldering furnace brazing, easily certain damage is caused on the surface of coil pipe and heat exchanger shell during clamper for disassembling after soldering is finished; Another kind is that coil pipe and heat exchanger shell make it fastening by direct spot welding, and then integral body is delivered to the soldering furnace brazing, spot-welding technology easily causes certain damage to spot welding place, causes the coil pipe and the heat exchanger shell that exist after the soldering that certain damage is arranged, and product quality such as is restricted at the defective.For overcoming these defectives, the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger is developed.
Summary of the invention: technical problem to be solved by this invention is the method for attachment that coil pipe and heat exchanger shell in a kind of gas heater aluminum alloy heat exchanger will be provided, and it can ensure effectively that coil pipe and heat exchanger shell after the soldering are injury-free, improves the quality of products.
The technical scheme that the present invention solves its technical problem employing is: it comprises the following steps: step 1, the coil pipe of required size moulding is enclosed within on the heat exchanger shell outer wall, stator two ends, location by the space are welded on the outer wall of heat exchanger shell the coil pipe positioning compression on the outer wall of heat exchanger shell, make the water tank section, described location stator is that the solder of soldering is made; Step 2 is delivered to integral solder in the soldering oven with the water tank section, and the location stator is melted in soldering oven, and coil pipe is anchored on the heat exchanger shell outer wall.
The location stator is arranged on left side, right side and the back side of heat exchanger shell in the described step 1.
Water tank section holding time in soldering oven is 20～40 minutes in the described step 2.
The described holding time is 30 minutes.
Water tank section brazing temperature in soldering oven is 560～690 ℃ in the described step 2.
Described brazing temperature is 560 ℃.
Described brazing temperature is 620 ℃.
Described brazing temperature is 690 ℃.
The described location stator quantity of using is 12～30.
Described location stator quantity is 21.
The present invention compares the beneficial effect that produces with background technology:
1, because the present invention adopts the following step: step 1, the coil pipe of required size moulding is enclosed within on the heat exchanger shell outer wall, stator two ends, location by the space are welded on the outer wall of heat exchanger shell the coil pipe positioning compression on the outer wall of heat exchanger shell, make the water tank section, described location stator is that the solder of soldering is made; Step 2, the water tank section is delivered to integral solder in the soldering oven, the location stator is melted in soldering oven, make coil pipe be anchored on method on the heat exchanger shell outer wall after the soldering, use the location stator with the coil pipe positioning compression on the outer wall of heat exchanger shell, do not use anchor clamps with the coil pipe positioning compression in heat exchanger shell, easily produce adhesion when having avoided anchor clamps and heat exchanger shell soldering and the outer surface of coil pipe and heat exchanger shell is caused certain damage, therefore it can ensure effectively that coil pipe and heat exchanger shell after the soldering are injury-free, improves the quality of products.
Description of drawings: Fig. 1 is technological process block-diagram of the present invention.
Fig. 2 is the structural representation of water tank section 4 among the present invention.
Fig. 3 is the structural representation of heat exchanger among Fig. 2.
Fig. 4 is the structure for amplifying schematic diagram of location stator 3 among Fig. 2.
The specific embodiment: shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, the present embodiment comprises coil pipe 1, heat exchanger shell 2, location stator 3, and location stator 3 is made for the solder of soldering.The coil pipe 1 of required size moulding is enclosed within on heat exchanger shell 2 outer walls, location stator 3 two ends by the space are welded on the outer wall of heat exchanger shell 2 coil pipe 1 positioning compression on the outer wall of heat exchanger shell 2, make water tank section 4, location stator 3 quantity can be 12～30, such as 12,14,16,18,20,22,24,26,28,30 etc., location stator 3 welds left side at heat exchanger shell 2 with resistance welder respectively, right side and the back side, after the compression coil pipe 1 on the heat exchanger shell 2 is fixed 3 faces, can realize that coil pipe 1 is fitted preferably with heat exchanger shell 2 in the water tank section 4.
Water tank section 4 is delivered to integral solder in the soldering oven, brazing temperature is 560～690 ℃ in the soldering oven, brazing temperature can be 560 ℃, 580 ℃, 600 ℃, 620 ℃, 640 ℃, 660 ℃, 680 ℃, 590 ℃ etc., the holding time was 20～40 minutes in the soldering oven, such as 20,25,30,35,40 minutes etc.Because location stator 3 adopts the solder of soldering to make, the fusing point of solder is in 580～670 ℃ temperature range, such as 580 ℃, 600 ℃, 620 ℃, 640 ℃, 660 ℃, 670 ℃ etc., when water tank section 4 is integral braze-welded, location stator 3 is melted in heat exchanger shell 2 and coil pipe 1 joint, location stator 3 as a supplement solder can make the scolder of heat exchanger shell 2 and coil pipe 1 welding more, makes it weld more firmly.
The integral braze-welded front anchor clamps positioning process that uses in the prior art, use anchor clamps that coil pipe 1 is fixing with heat exchanger shell 2, make coil pipe 1 and heat exchanger shell 2 close contacts, then integral body is delivered to the soldering furnace brazing, may produce adhesion during because of anchor clamps and heat exchanger shell 2 soldering, after finishing, soldering easily certain damage is caused on coil pipe 1 and the surface of heat exchanger shell 2 during clamper for disassembling, its operation is more loaded down with trivial details, length consuming time, one time the soldering qualification rate is lower, easily cause impression and distortion even damage on coil pipe 1 and the surface of heat exchanger shell 2, usually need to increase post processing polishing operation and guarantee appearance requirement.Location stator 3 techniques that adopt the solder of soldering to make can be cancelled the operation of manual sectional fixture, and spot welding location stator 3 makes behind coil pipe 1 positioning compression integral braze-welded, and its soldering qualification rate improves greatly, satisfies the requirement of outward appearance and quality.
Another direct spot welding technique of using in the prior art, coil pipe 1 makes it fastening with heat exchanger shell 2 by direct spot welding, and then integral body is delivered to the soldering furnace brazing, because spot-welding technology burns strongly to the parts generation of spot welding place, easily spot welding place is caused certain damage, spot welding place is then strong oxidation and burn black, heavy then burnt gently.Burn black part in the major safety risks that heat exchanger is long-term to have perforation to leak after using, and the coil pipe 1 that burns and heat exchanger shell 2 can only be done and scrap processing.Among the present invention, location stator 3 as a supplement solder can make the scolder of heat exchanger shell 2 and coil pipe 1 welding more, and coil pipe 1 and heat exchanger shell 2 is not caused any damage, therefore qualification rate improves greatly after its soldering, satisfies the requirement of Performance and quality.
Claims (10)
1. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger, the method comprises the steps:
Step 1 is enclosed within the coil pipe (1) of required size moulding on heat exchanger shell (2) outer wall, makes water tank section (4);
Step 2 is delivered to integral solder in the soldering oven with water tank section (4), and coil pipe (1) is anchored on heat exchanger shell (2) outer wall,
It is characterized in that: in step 1, location stator (3) two ends by the space are welded on the outer wall of heat exchanger shell (2) coil pipe (1) positioning compression on the outer wall of heat exchanger shell (2), and described location stator (3) is made for the solder of soldering;
In step 2, location stator (3) is melted in soldering oven.
2. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 1 is characterized in that locating in the described step 1 left side, right side and the back side that stator (3) is arranged on heat exchanger shell (2).
3. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 1 and 2 is characterized in that water tank section (4) holding time in soldering oven is 20～40 minutes in the described step 2.
4. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 3 is characterized in that the described holding time is 30 minutes.
5. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 3 is characterized in that water tank section (4) brazing temperature in soldering oven is 560～690 ℃ in the described step 2.
6. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 5 is characterized in that described brazing temperature is 560 ℃.
7. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 5 is characterized in that described brazing temperature is 620 ℃.
8. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 5 is characterized in that described brazing temperature is 690 ℃.
9. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 5 is characterized in that described location stator (3) quantity of using is 12～30.
10. the method for attachment of coil pipe and heat exchanger shell in the gas heater aluminum alloy heat exchanger according to claim 9, its feature is 21 in described location stator (3) quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193655 CN102049586B (en) | 2009-11-02 | 2009-11-02 | Method for connecting coil with heat exchanger shell in aluminum alloy heat exchanger of gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193655 CN102049586B (en) | 2009-11-02 | 2009-11-02 | Method for connecting coil with heat exchanger shell in aluminum alloy heat exchanger of gas water heater |
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| CN102049586A CN102049586A (en) | 2011-05-11 |
| CN102049586B true CN102049586B (en) | 2013-01-30 |
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| CN 200910193655 Active CN102049586B (en) | 2009-11-02 | 2009-11-02 | Method for connecting coil with heat exchanger shell in aluminum alloy heat exchanger of gas water heater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB556338A (en) * | 1942-05-21 | 1943-09-30 | Ascot Gas Water Heaters Ltd | An improved method of attaching metal rods or tubes to metal plates and the like |
| CN2239602Y (en) * | 1995-09-05 | 1996-11-06 | 慈溪市燃气安全用具厂 | Microcomputer control device of gas water heater |
| CN101175966A (en) * | 2005-05-16 | 2008-05-07 | 大金工业株式会社 | Heat exchanger |
-
2009
- 2009-11-02 CN CN 200910193655 patent/CN102049586B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB556338A (en) * | 1942-05-21 | 1943-09-30 | Ascot Gas Water Heaters Ltd | An improved method of attaching metal rods or tubes to metal plates and the like |
| CN2239602Y (en) * | 1995-09-05 | 1996-11-06 | 慈溪市燃气安全用具厂 | Microcomputer control device of gas water heater |
| CN101175966A (en) * | 2005-05-16 | 2008-05-07 | 大金工业株式会社 | Heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| JP昭63-188469A 1988.08.04 |
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| CN102049586A (en) | 2011-05-11 |
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