Heat exchanger and method for manufacturing the heat exchanger

A heat exchanger includes a pair of header pipes having connection holes, and flat tubes disposed between the header pipes and connected to the header pipes at their end portions. Each of the flat tubes has connecting portions at its end portions which are inserted into the connection holes. The con...

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Hauptverfasser: SHINMURA, TOSHIHARU
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creator SHINMURA
TOSHIHARU
description A heat exchanger includes a pair of header pipes having connection holes, and flat tubes disposed between the header pipes and connected to the header pipes at their end portions. Each of the flat tubes has connecting portions at its end portions which are inserted into the connection holes. The connecting portions have a flow area substantially equal to the flow area of the central portion of the flat tube, and have a width smaller than the width of the central portion of the flat tube in the longitudinal direction of the cross section of the central portion of the flat tube. The connection holes may be small in the diameter direction of the header pipes; thus the diameter of the header pipes can be decreased. As a result, the amount of the used heat medium can be reduced. The flat tubes are easily assembled to a desired position merely by inserting the connecting portions into the connection holes.
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Each of the flat tubes has connecting portions at its end portions which are inserted into the connection holes. The connecting portions have a flow area substantially equal to the flow area of the central portion of the flat tube, and have a width smaller than the width of the central portion of the flat tube in the longitudinal direction of the cross section of the central portion of the flat tube. The connection holes may be small in the diameter direction of the header pipes; thus the diameter of the header pipes can be decreased. As a result, the amount of the used heat medium can be reduced. 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subjects BLASTING
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HEAT EXCHANGE IN GENERAL
HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
HEATING
LIGHTING
MECHANICAL ENGINEERING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TRANSPORTING
WEAPONS
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
title Heat exchanger and method for manufacturing the heat exchanger
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