JPS5756122A - Pipe expanding method for heat exchanger - Google Patents
Pipe expanding method for heat exchangerInfo
- Publication number
- JPS5756122A JPS5756122A JP13213480A JP13213480A JPS5756122A JP S5756122 A JPS5756122 A JP S5756122A JP 13213480 A JP13213480 A JP 13213480A JP 13213480 A JP13213480 A JP 13213480A JP S5756122 A JPS5756122 A JP S5756122A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- former
- flare
- fins
- pressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Metal Extraction Processes (AREA)
Abstract
PURPOSE: To expand a pipe at high accuracy by inserting a pipe into a through hole of overlapped plural fins, and expanding the pipe after forming a flare at the end of the pipe that projects from the fins.
CONSTITUTION: A pipe 4 is inserted into a through hole 3 of plural fins 2 and its end is projected from a flange 2a of an end plate 2b. Under this state, an expander 5 made up of a pipe expanding device 6, a flare former 7 and a stripper 8 is lowered in the pipe 4. The ball part 10 of the expander 6 is pressed in and then the former 7 is pressed in while rotating. Since the ball part 10 is pressed only in the end of the pipe, contraction of the pipe in the direction of length does not take place. When the end face 14 of the former 7 comes into contact with the stopper 18 of the stripper 8, the former 7 comes to a stop, and flare forming is completed. Even if the ball part 10 descends to expand the pipt 4 after flare forming, contraction of the pipe 4 in the direction of length can be restrained and the pipe 4 contacts closely with fins 2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13213480A JPS5756122A (en) | 1980-09-22 | 1980-09-22 | Pipe expanding method for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13213480A JPS5756122A (en) | 1980-09-22 | 1980-09-22 | Pipe expanding method for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5756122A true JPS5756122A (en) | 1982-04-03 |
Family
ID=15074166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13213480A Pending JPS5756122A (en) | 1980-09-22 | 1980-09-22 | Pipe expanding method for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5756122A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62144829A (en) * | 1985-12-20 | 1987-06-29 | Matsushita Refrig Co | Expansion method for pipe |
| JPS6392835A (en) * | 1986-10-03 | 1988-04-23 | Mitsubishi Electric Corp | Manufacture of electromagnetic coupling device |
| JP2007024426A (en) * | 2005-07-19 | 2007-02-01 | Kakinuma Kinzoku Seiki Kk | Heat exchanger, its manufacturing method, and freezing apparatus using the heat exchanger |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5483672A (en) * | 1977-12-16 | 1979-07-03 | Hitachi Ltd | Expander for pipe-flare of heat-exchanger |
-
1980
- 1980-09-22 JP JP13213480A patent/JPS5756122A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5483672A (en) * | 1977-12-16 | 1979-07-03 | Hitachi Ltd | Expander for pipe-flare of heat-exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62144829A (en) * | 1985-12-20 | 1987-06-29 | Matsushita Refrig Co | Expansion method for pipe |
| JPS6392835A (en) * | 1986-10-03 | 1988-04-23 | Mitsubishi Electric Corp | Manufacture of electromagnetic coupling device |
| JP2007024426A (en) * | 2005-07-19 | 2007-02-01 | Kakinuma Kinzoku Seiki Kk | Heat exchanger, its manufacturing method, and freezing apparatus using the heat exchanger |
| JP4515346B2 (en) * | 2005-07-19 | 2010-07-28 | 柿沼金属精機株式会社 | Heat exchanger |
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