US 5,669,439 AGranted

Laminated type heat exchanger

AssigneeNippondenso Co., Ltd.

InventorsEtsuo Hasegawa, Masatoshi Sudo, Toshiya Nagasawa, Keiichi Yoshii

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Abstract

According to the present invention, an outlet tank and an inlet tank are formed in one end side of a plurality of connecting bodies and the bent portions are formed in other end side of the connecting bodies. The plurality of the connecting bodies is formed by a pair of pressed plates and is laminated to form a predetermined space in which the fin is installed, thus creating a laminated type heat exchanger. The bent portions are formed in a bottom end portion of the connecting body, and in the remaining bottom end portion of the surface, there is formed an extending portion which extends to a side lower than the bottom end portion of the fin. Therefore, even when the condensed water becomes a water drop between the surface of the connecting body and the surface of the fin, the drop does not stay for a long time and is efficiently drained by the extending portion downwardly.

Claims5

Dependent claims

A laminated type heat exchanger comprising:

a plurality of connecting bodies, each of which is formed by connecting a pair of pressed plates face-to-face to form a refrigerant passage therein;
an inlet tank portion protruding from said connecting body toward its top end side thereof for directing a refrigerant into said refrigerant passage, said inlet tank portions of each of said connecting bodies communicating with each other;
an outlet tank portion protruding from said connecting body toward its top end side thereof for discharging the refrigerant from said refrigerant passage, said outlet tank portions of each of said connecting bodies communicating with each other;
a U-shaped tube formed within said connecting body for directing the refrigerant from said inlet tank portion to said outlet tank portion;
a bent portion partially provided on a bottom portion of said connecting body, said bent portion being bent nearly perpendicular to a bottom surface of said connecting body;
a fin provided between each adjacent pair of said connecting bodies at a lower side of said inlet tank portion and said outlet tank portion and at an upper side of said bent portion;
an extending portion provided on said bottom portion of said connecting body on a portion other than said bent portion so as to extend to a side lower than a bottom end portion of said fin a predetermined distance;
and
guide means provided on a surface of said connecting body for guiding condensed water generated on a surface of said connecting body toward said extending portion while avoiding said bent portion.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/635,006Filed 19 Apr 1996
Priority: JP 7-9694521 Apr 1995
Granted: 23 Sep 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F28F 17/005
Removing ice or water from heat-exchange apparatus: means for draining condensates from heat exchangers, e.g. from evaporators
F28D 1/0341
The plates having integrated connecting members: with U-flow or serpentine-flow inside the conduits
F28F
Details of heat-exchange and heat-transfer apparatus, of general application
F28D
Heat-exchange apparatus, not provided for in another subclass, in which the heat-exchange