Pipe fitting mechanism and heat exchanger using same

Details Pipe fitting mechanism and heat exchanger using same Pipe fitting mechanism and heat exchanger using same

1994-12-15

1996-07-23

Flanigan, Allen J.

Heat exchange

With repair or assembly means

165178, 285319, 285189, F28F 902, F16L 4108

Patent

active

055380760

ABSTRACT:
Projections are formed on the tip end part of a pipe for directly fitting the pipe into a capsule without using any extraneous elements, thus providing an economical and firmly fitting mechanism. Such a structure is commonly used in a heat exchanger. A tank includes a capsule formed into a box shape with one side open and a bottom panel disposed at the upper and lower ends of a heat exchanger and brazed thereto. A pipe fitting hole is formed in a side panel of the capsule, and around the pipe fitting hole is concavely formed a ring-shaped part inside the tank, and around the-ring-shaped part is formed a cylindrical part approximately at a right angle to the plane of ring-shaped part. On pipe is formed a flange part, and on a tip end part of the pipe are formed projections. The pipe is fit to the capsule of the tank by caulking an annular sealing material to the outer periphery of an end part of the pipe, fitting the end part into the pipe fitting hole, and contracting the annular sealing material between the ring-shaped part, the cylindrical part and the flange part.

REFERENCES:
patent: 4773474 (1988-09-01), Stay
patent: 4887666 (1989-12-01), Briet
patent: 4887849 (1989-12-01), Briet

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