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AssigneeCalsonic Kansei Corporation
InventorsKoji Tatsuta, Kenji Shimizu, Shizuo Matsumoto
Estimating the term…
An expansion section for expanding the distance between longitudinal side surfaces of an opening of a tube when being inserted a predetermined depth into the opening is formed an expansion wedge body, and guide protuberances are protrusively formed on the respective longitudinal sides of the expansion section. The guide protuberances are inserted into the spaces provided on the respective sides of the opening of the tube, thereby guiding the expansion section into the opening.
An expansion wedge for use with a flat heat exchanger tube of which an opening is inserted into a tube hole of a header member, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Arrangements for sealing elements into header boxes or end plates: by permanent joints, e.g. by rolling
Application of procedures in order to alter the diameter of tube ends: enlarging
Heat exchangers or parts thereof, e.g. radiators, condensers fins, headers: of both metal tubes and sheet metal
Details of heat-exchange and heat-transfer apparatus, of general application
Term end not estimated
1. Field of the Invention
The present invention relates to a structure for mounting a tube to a header member of the heat exchanger which is manufactured through the use of an expansion wedge. The expansion wedge expands the diameter of an opening of a flat tube to be inserted into a tube hole formed in a header member and which brings the opening into close contact with the tube hole.
The present application is based on Japanese Patent Applications No. Hei. 11-44875 and 2000-23925, which are incorporated herein by reference.
In the accompanying drawings:
FIG. 1 is a side view showing an expansion wedge for use with a heat exchanger tube according to a first embodiment of the present invention;
FIG. 2 is a front view of the expansion wedge shown in FIG. 1;
The present invention will be described in detail hereinbelow by reference to embodiments shown in the accompanying drawings.
FIGS. 1 through 3 show an expansion wedge for use with a heat exchanger tube according to the first embodiment of the present invention.
In the present embodiment, an aluminum tube 11 having a flat cross section such as that shown in FIG. 4 is inserted into a tube hole 13a of an aluminum header member 13, as shown in FIG. 5. In this state, an expansion wedge 15 is inserted into the opening 11a of the tube 11, thereby expanding the cross-sectional width of the opening 11a and bringing the opening 11a into close contact with the tube hole 13a.