Liquid tank structure of heat exchanger

Abstract

In a liquid tank structure of a heat exchanger, a liquid tank 4 is attached to a heat exchanger having a heat exchanger core defining a condensation part AC and an under cooling part BC, and a pair of headers 1 and 2 each having an inlet part R1, R2 connected with the condensation part AC and an outlet part R3, R4. The condensed refrigerant from the inlet part R2 flows in the liquid tank 4 through an inlet port 1a of an inlet-port side connecting pipe 4a connected with the inlet part R2 of one header 2 of the pair of header. The condensed refrigerant Q accumulated in a bottom portion of the liquid tank 4 is discharged to the outlet part R3 through an outlet port b1 of an outlet-port side connecting pipe 4b connected with the outlet part R3 at a position under an inlet port a1. A sloshing suppression member 11, for suppressing a sloshing of the condensed refrigerant Q accumulated in the bottom portion of the liquid tank 4, has a passing-through ability of the condensed refrigerant and is provided in an inner space of the liquid tank 4 between the inlet port a1 and the outlet port b1.

Description

TECHNICAL FIELD [0001]The present invention relates to a liquid tank structure of a heat exchanger which is mounted on a motor vehicles and the like.BACKGROUND OF THE INVENTION [0002]Conventional liquid tank structures of heat exchangers are disclosed in Japanese Patents Laid-open No. (Tokkaihei) 11-316064 and No. 2000-46444. In these liquid tank structures, a heat exchange core, which includes a condensation part and an under cooling part, is provided with a pair of headers which fluidically connects the condensing part and the under cooling part. One of the headers is defined into an inlet part and an outlet part, where the inlet part is provided with an inlet port to be fluidically connected with the condensing part, and the outlet part is provided with an outlet port to be fluidically connected with the under cooling part. The other of the headers is defined into an inlet part and an outlet part, where the inlet part is fluidically connected with the under cooling part, being pr...

AI Technical Summary

Benefits of technology

[0008]In the liquid tank structure of the invention, the sloshing suppression member is arranged in the inner space of the liquid tank between the inlet port and the outlet port for suppressing the condensed refrigerate accumulated in the bottom portion of the liquid tank. Therefore, even when the condensed refrigerate which causes through the inlet part falls on the condensed refrigerate accumulated in the bottom portion of the liquid tank to disturb a liquid surface, the liquid surface is calmed down while and after the condensed refrigerant passes through the sloshing suppression member with the passing-through ability, and consequently its gas and its liquid are more surely separated from each other, only the condensed refrigerate is sent to the under cooling part through the outlet part.

[0009]Therefore, the liquid tank structure of the invention can prevent the condensed refrigerant from being sent to the under cooling part in a state where its gas and its liquid are unsufficiently separated from each other, due to a disturbance of the liquid surface of the condensed refrigerate in the liquid tank, and thereby it can obtain the effect in decreasing a necessary amount of the refrigerant.

Problems solved by technology

This causes a problem in that the condensed refrigerant 100, which is accumulated in the bottom portion of the liquid tank 100, is discharged to the under cooling part in a white turbidity state where the condensed refrigerant 103 contains the gas because the gas and the liquid thereof are remixed up due to the hard fall.

Accordingly, in the conventional liquid tank structure, there is a problem in that the enclosed capacity of the refrigerant increases too much, thereby increasing a consumption amount of the refrigerant which causes environmental problems in recent years.

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