CN100409969C - Heat exchanger and its mfg. method - Google Patents
Heat exchanger and its mfg. method Download PDFInfo
- Publication number
- CN100409969C CN100409969C CNB021302235A CN02130223A CN100409969C CN 100409969 C CN100409969 C CN 100409969C CN B021302235 A CNB021302235 A CN B021302235A CN 02130223 A CN02130223 A CN 02130223A CN 100409969 C CN100409969 C CN 100409969C
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- pipe
- heat exchanger
- flange part
- pipe joint
- flange
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Abstract
The present invention relates to a heat exchanger and a manufacturing method thereof. A pipe expanding part (8) with pipe expansion through punch processing and a flange part (9) integrally formed with the end of the pipe expanding part (8) are formed at the end of a pipe (3c). A separate flange member (10) whose the outer part is embedded on the pipe expanding part (8) is also arranged on the end of the pipe (3c) and is tightly attached to the flange part (9). The pipe expanding part (8), the flange part (9) and the flange member (10) form a pipe joint (7) for connecting the pipe (3c) to an external pipe. The method can reduce the processing working hours and the manufacture cost.
Description
Technical field
The present invention relates to possess the fin tube type heat exchanger and the manufacture method thereof of many pieces of fins and pipe, relate in particular to improvement the pipe joint that pipe is connected in outside pipe arrangement is constructed, with the technology of seeking to cut down cost of manufacture, manufacturing cost and improving quality.
Background technology
In the past, water heater was generally used fin tube type heat exchanger.As Fig. 6, shown in Figure 7, heat exchanger 30 has many pieces of fins 33 of outer cover body 31, many pipes 32 and outer cover body 31 inside etc., when the hot water supply moves, make the combustion chambers burn operation on one side, drive supply fan on one side, if supply water, then be heated to the above hot water of heat supply coolant-temperature gage and just discharge from the heat supply mouth of a river 35 of pipe 32 from the supply mouth of a river 34 of pipe 32.Pipe reciprocally connects outer cover body 31 and many pieces of fins 33 for more than 32 time, and the position that pipe 32 connects outer cover body 31 and many pieces of fins 33 engages with furnace brazing.The water inlet 34 of pipe 32 and 35 places, the heat supply mouth of a river use soldering and engage the brazen pipe joint 36 that machining forms behind forging and molding.
Summary of the invention
In described heat exchanger in the past, assemble many pipelines, outer cover body and many pieces of fins, soldering object place at these heat exchange assemblys settles solder, again this heat exchange assembly is contained in soldering oven inside, carry out furnace brazing with about 800～850 degree, then to the head portion of heat-transfer pipe brazed pipe joint by hand.Because pipe joint is brazen, if in soldering oven, carry out soldering, can Yin Gaowen causes and take off plumbous phenomenon, thereby bad etc. the unfavorable condition of the bad and outward appearance of the insufficient strength, the surface roughness that cause because of changes in material takes place.
Manual brazed pipe joint is the operation that needs a lot of staff and machining period number, cost of manufacture height not only, and the automation of parts manufacturing also produced obstacle.
The objective of the invention is to reduce the machining period number of heat exchanger, and reduce cost of manufacture.
Tube end forms expansion tube department through punch process, and this integrally formed flange part in expansion tube department end is made of the pipe joint that pipe is connected usefulness with outside pipe arrangement this expansion tube department and flange part.Form such pipe joint, owing to pipe pair and heat exchanger body and many pieces of fins can be carried out furnace brazing, therefore, pipe needn't manual brazed pipe joint after furnace brazing, the pipe joint structure is simplified, guaranteed the quality of pipe joint, can reduce the cost of manufacture of heat exchanger significantly.Because use as pipe joint the end of pipe, compare with the conventional art of using brazen pipe joint to constitute, can seek the lightweight of pipe joint.
End at pipe forms expansion tube department through punch process, is formed with flange part in this expansion tube department end, and in addition the flange component of body is set as outside chimeric and be close to state on the flange part with expansion tube department.Constitute pipe joint by this expansion tube department, flange part and flange component, pipe is connected to outside pipe arrangement.Because after forming this pipe joint, pipe and pipe body and many pieces of fins can be carried out furnace brazing, after pipe carries out furnace brazing, needn't implement manual soldering to pipe joint, can reduce cost of manufacture significantly, and,, can seek the lightweight of pipe joint so compare with described conventional art with the brass pipe joint because of constituting pipe joint with tube end and flange component.
The manufacture method of technical scheme 3 described heat exchangers, it is the method that technical scheme 1 or 2 described heat exchangers are made, it is characterized in that, carry out furnace brazing at many interior pipes, many pieces of fins and whole solderings position of accommodating on the outer cover body of these fins containing the pipe that constitutes described pipe joint.When making this heat exchanger, in the end of pipe pipe joint is set in advance, the many pipes that will comprise this pipe are installed on many pieces of fins and the outer cover body.Then, place many solders, constitute the heat exchange assembly, afterwards, this heat exchange assembly is contained in the soldering oven,, soldering is implemented at whole solderings position by heat-treating with set point of temperature according to these pipe installation positions.
If operation technique scheme 1 described invention, end at pipe forms expansion tube department through punch process, at the integrally formed flange part in the end of this expansion tube department, constitute pipe joint by these expansion tube departments and flange part, so that pipe is connected with outside pipe arrangement, so, form pipe joint simply with punch process etc., pipe is carried out furnace brazing in outer cover body, needn't be again after soldering artificial brazed pipe joint, this just can reduce cost of manufacture significantly, use as pipe joint the end of pipe, compares with the described conventional art of using brazen pipe joint, and the pipe joint structure is simplified, can seek the pipe joint lightweight, become favourable when being arranged at the hot water supply equipment who adopts this pipe 7 on the dwelling house wall.
If adopt technical scheme 2 described inventions, end at pipe forms expansion tube department through punch process, at the integrally formed flange part in the end of this expansion tube department, be provided with again that the outside is entrenched on the expansion tube department and be close to the flange component of body in addition of portion, constitute the pipe joint that pipe is connected usefulness with outside pipe arrangement by expansion tube department, flange part, flange component with flange.Therefore, available pressure processing etc. form simple pipe joint, pipe can be contained in and carry out the soldering furnace brazing in the outer cover body.Therefore, pipe carries out soldering in soldering oven after, needn't carry out manual soldering, can reduce cost of manufacture significantly pipe joint.Adopt flange component to constitute pipe joint, also can constitute the pipe joint that is not subjected to tubing and thickness of pipe restriction, obtain the effect same in addition with technical scheme 1.
If adopt technical scheme 3 described inventions, when making heat exchanger, pipe joint is set on pipe, the many pipes that will comprise this pipe are installed on many pieces of fins and the outer cover body, installation position according to these pipes, put many solders, constitute the heat exchange assembly, afterwards this heat exchange assembly is contained in and carries out heat treated in the soldering oven, soldering is implemented at whole soldering positions simultaneously, therefore, can simplify the manufacture method of heat exchanger, reduce manufacturing cost, and can advance heat exchanger to make the automation of line.
Description of drawings
Fig. 1 is the front view of the heat exchanger of embodiment of the present invention.
Fig. 2 is the side view after the part of heat exchanger is dissectd.
Fig. 3 is the heat exchanger vertical view.
Fig. 4 is the rearview after the part of heat exchanger is dissectd.
Fig. 5 is the in-built phantom of expression pipe joint.
Fig. 6 is the front view of heat exchanger in the past.
Fig. 7 is the expanded view of pipe joint and pipe relation in the past.
The specific embodiment
Following with reference to the description of drawings embodiment of the present invention.Present embodiment is the occasion of heat exchanger application of the present invention in the heat exchanger of the fin tube type that is used for water heater.The explanation of the manufacture method that also comprises heat exchanger below is described in addition.
As Fig. 1～shown in Figure 4, heat exchanger 1 is to be used for the water heating that the outside is supplied with reached answering more than the supply temperature and the equipment of discharging through the heat supply mouth of a river.Heat hands over outer cover body 2 inside of ironware 1 to be incorporated with the copper pipe 3 of many pieces of fins 6, heat exchanger 1, and the also repeatedly reciprocal shape that links to each other by the outside feed pipe 3a of outer cover body 2, with feed pipe 3a connects many pieces of the fin 6 and finned tube 3b of the outer cover body 2 and hot water supply pipe 3c that links to each other with this finned tube 3b and constitutes.If make the not shown combustion chamber that is equipped on heat exchanger 1 below burn operation, supply water from feed pipe 3a, then heating reaches the above hot water of hot water supply temperature, from the heat supply mouth of a river discharge of hot water supply pipe 3c.
Then, describe the structure of this heat exchanger 1 in detail.
As Fig. 1～shown in Figure 5, the many pieces of fins 6 that constitute than sheet copper or corrosion resistant plate are accommodated guaranteeing heat transfer area greatly in the inside of outer cover body 2, and many pieces of fins 6 insert inner from the upper opening portion of outer cover body 2.Finned tube 3b connects many pieces of fins 6 and outer cover body 2 at the number place.The position that connects many pieces of fins 6 at finned tube 3b forms solder installation pit 5, to place the clavate solder.
There is the heat exchange assembly of many solders to be contained in the soldering oven storing like that as described, just soldering implemented at the position of all soldering objects in several 10 minutes through about 800～850 degree heat treatments.The top ends of feed pipe 3a is stamping and becomes slightly undergauge shape, the top ends of this undergauge to be embedded in the end of finned tube 3b to carry out soldering.Equally, the top ends of hot water supply pipe 3c also is stamping slightly undergauge shape, and the top ends of this undergauge is embedded in the end of finned tube 3b, carries out soldering.
The structure of the pipe joint 7 that feed pipe 3a and hot water supply pipe 3c are connected with outside pipe arrangement then, is described.Top ends at feed pipe 3a and hot water supply pipe 3c is provided with pipe joint 7 respectively.These pipe joints are same structures, so be located at pipe joint 7 on the hot water supply pipe 3c with reference to Fig. 5 explanation.
The effect of described heat exchanger 1 then, is described.
If adopt the heat exchanger 1 of described explanation, because at pipe 3a, the end of 3c forms the expansion tube department 8 that forms through the punch process expander, be shaped and the flange part 9 integrally formed by this expander with expansion tube department 8 ends, and the flange component 10 of body in addition that is provided with that the outside is entrenched on the expansion tube department 8 and is close to flange part 9, by described expansion tube department 8, flange part 9, flange component 10 constitutes the pipe joint 7 that is connected with outside pipe arrangement, thereby, pipe joint 7 simple structures, because this pipe joint 7 is being pre-formed at pipe 3a, under the state on the 3c, can carry out furnace brazing to the soldering object position of heat exchanger 1, therefore, after handling, furnace brazing needn't carry out the manual soldering of pipe joint 7, can reduce the cost of manufacture of heat exchanger 1 significantly, and can realize high-quality pipe joint 7 by simple structure, thereby realize light-duty pipe joint 7.
Because of end and flange component 10 with pipe 3a, 3c form pipe joint, thus compare with the device in the past of the pipe joint that uses brazen miscellaneous part, can be to seek the lightness of pipe joint.And then the lightness of seeking heat exchanger, adopting the water heater of this heat exchanger is favourable to being arranged on the dwelling house wall.And, can solve in the device in the past pipe joint of soldering and take off phenomenons such as undercapacity, surface roughness that plumbous phenomenon causes are bad, outward appearance is bad, thereby can prevent the quality condition of poor.
When making heat exchanger, on pipe 3a, 3c, pipe joint is set in advance, pipe 3a～3c is installed on many pieces of fins 6 and the outer cover body 2, many solders are placed in installation position according to these pipes 3a～3c, constitute the heat exchange sub-assembly, it is contained in carries out heat treated in the soldering oven afterwards, all soldering is implemented at the soldering position simultaneously, thereby can simplify heat exchanger 1 manufacture method, reduce manufacturing cost, and, can advance the automation of the manufacturing line of heat exchanger 1.
Below, the alter mode of declaratives change present embodiment.
1) uses screw is connected described pipe joint 7 with the pipe joint of outside pipe arrangement occasion, also can on the flange part body 10a of flange component 10, form screw.In addition, the material of pipe 5 also has the employing copper situation of metal in addition, in the sort of occasion, also can save flange component 10, constitutes pipe joint with expansion tube department and flange part.
2) flange component 10 constitutes with the also available roughly same external diameter of flange part 9.In addition, without departing from the spirit and scope of the present invention, also can implement the mode of the additional all changes of described embodiment.
Claims (2)
1. heat exchanger, it is the fin tube type heat exchanger that possesses many pieces of fins and pipe, it is characterized in that, be provided with in the end of described pipe through punch process and the expansion tube department of expander, the flange part that forms in the end of this expansion tube department, the flange component that is entrenched in from the outside on the expansion tube department and is close to flange part
This flange component has the minor diameter part than big flange part body of the diameter of flange part and the tubular littler than the diameter of flange part,
Constitute the pipe joint that described pipe is connected usefulness with outside pipe arrangement by expansion tube department, flange part, flange component.
2. the manufacture method of a heat exchanger, it is the method that the described heat exchanger of claim 1 is made, it is characterized in that, carry out furnace brazing at many interior pipes, many pieces of fins and whole solderings position of accommodating on the outer cover body of these fins comprising the pipe that constitutes described pipe joint.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021302235A CN100409969C (en) | 2002-08-15 | 2002-08-15 | Heat exchanger and its mfg. method |
| HK04105526.8A HK1062708A1 (en) | 2002-08-15 | 2004-07-27 | Heat exchanger and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021302235A CN100409969C (en) | 2002-08-15 | 2002-08-15 | Heat exchanger and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1475710A CN1475710A (en) | 2004-02-18 |
| CN100409969C true CN100409969C (en) | 2008-08-13 |
Family
ID=34144423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021302235A Expired - Fee Related CN100409969C (en) | 2002-08-15 | 2002-08-15 | Heat exchanger and its mfg. method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100409969C (en) |
| HK (1) | HK1062708A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122928A (en) * | 1982-06-23 | 1984-01-25 | Valeo | Method of assembling at least one tube on a plate and equipment for performing this method |
| JPS6254533A (en) * | 1985-08-30 | 1987-03-10 | Showa Alum Corp | Manufacture of heat exchanger |
| JPH02127973A (en) * | 1988-11-08 | 1990-05-16 | Honda Motor Co Ltd | Manufacture of heat exchanger made of aluminum |
| JPH04288491A (en) * | 1991-03-15 | 1992-10-13 | Showa Alum Corp | Metallic heat exchanger |
| JPH10216930A (en) * | 1997-02-12 | 1998-08-18 | Keiji Matsumoto | Joining method for tube with joint in heat exchanger |
-
2002
- 2002-08-15 CN CNB021302235A patent/CN100409969C/en not_active Expired - Fee Related
-
2004
- 2004-07-27 HK HK04105526.8A patent/HK1062708A1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122928A (en) * | 1982-06-23 | 1984-01-25 | Valeo | Method of assembling at least one tube on a plate and equipment for performing this method |
| JPS6254533A (en) * | 1985-08-30 | 1987-03-10 | Showa Alum Corp | Manufacture of heat exchanger |
| JPH02127973A (en) * | 1988-11-08 | 1990-05-16 | Honda Motor Co Ltd | Manufacture of heat exchanger made of aluminum |
| JPH04288491A (en) * | 1991-03-15 | 1992-10-13 | Showa Alum Corp | Metallic heat exchanger |
| JPH10216930A (en) * | 1997-02-12 | 1998-08-18 | Keiji Matsumoto | Joining method for tube with joint in heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1062708A1 (en) | 2004-11-19 |
| CN1475710A (en) | 2004-02-18 |
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