Refrigeration – Refrigeration producer – Compressor-condenser-evaporator circuit
Reexamination Certificate
2001-11-20
2002-10-29
Esquivel, Denise L. (Department: 3744)
Refrigeration
Refrigeration producer
Compressor-condenser-evaporator circuit
C165S173000
Reexamination Certificate
active
06470704
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATION
This application is related to Japanese Patent Application No. 2000-385562 filed on Dec. 19, 2000, the contents of which are hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pipe connection structure of a receiver-integrated condenser in a refrigerant cycle system for a vehicle.
2. Description of Related Art
In a receiver-integrated condenser
110
arranged integrally with a radiator
161
in a vehicle, as shown in
FIGS. 7A
,
7
B, a condensing portion
125
is disposed at an upper side in a core portion
113
, and refrigerant after passing through the condensing portion
125
is introduced into a receiving unit
120
to be separated into gas refrigerant and liquid refrigerant. Further, liquid refrigerant within the receiving unit
120
flows through a super-cooling portion
126
disposed at a lower side in the core portion
110
to be super-cooled. In addition, a connector portion
140
used as a refrigerant outlet of the core portion
113
is positioned at one end side of the condenser
110
in a width direction, and is arranged at a middle position in the vehicle in a vehicle right-left direction. On the other hand, the receiving unit
120
is positioned at an end side of the condenser
110
opposite to the connector portion
140
. In addition, for improving assembling performance of the condenser
110
in the vehicle and for reducing a mounting space of the condenser
110
, a connector
142
for being connected to the connector portion
140
is connected to an upstream end of a refrigerant pipe
141
disposed at a front lower side of the condenser
110
, and a downstream end of the refrigerant pipe
141
is positioned at the side of the receiving unit
120
to be connected to an outlet connector
133
used as a connection portion of a high-pressure liquid-refrigerant pipe. However, in this case, as shown in
FIG. 7B
, the connector portion
140
and the connector
142
greatly protrude to a vehicle front side, and the mounting performance of the condenser
110
on the vehicle may be deteriorated.
On the other hand, in a receiver-integrated condenser described in JP-A-8-183325, a refrigerant outlet portion of the super-cooling portion and a connection portion connecting with a high-pressure liquid-pipe is disposed at the same side as a receiving unit in the width direction of the condenser. However, in this case, the connection portion is disposed to protrude to a side of the receiving unit, and the mounting performance of the condenser on the vehicle is deteriorated. In addition, because the refrigerant outlet portion of the super-cooling portion is provided at a direct lower side of the receiving unit, a cap member of a bottom portion of the receiving unit cannot be detachable.
SUMMARY OF THE INVENTION
In view of the foregoing problems, it is an object of the present invention to improve mounting performance of a receiver-integrated condenser on a vehicle, in which a receiving unit is positioned at one end side of the condenser in a width direction, and a connection portion for connecting a refrigerant outlet pipe is disposed at the same side as an arrangement position of the receiving unit.
According to the present invention, a receiver-integrated condenser for a refrigerant cycle system of a vehicle includes a condensing portion for cooling and condensing refrigerant discharged from a compressor of the refrigerant cycle system, a receiving unit which is disposed to separate refrigerant from the condensing portion into gas refrigerant and liquid refrigerant and to store liquid refrigerant therein, a super-cooling portion for super-cooling liquid refrigerant from the receiving unit, and a connector connected to a refrigerant outlet portion of the super-cooling portion. In the receiver-integrated condenser, the super-cooling portion is disposed at a lower side of the condensing portion in a core portion, and the receiving unit is disposed at one end side of the core portion in a width direction of the core portion to extend in a vertical direction perpendicular to the width direction. The super-cooling portion is disposed to define a refrigerant passage, in such a manner that refrigerant is U-turned in the refrigerant passage at the other end side of the core portion in the width direction, and the refrigerant outlet portion of the super-cooling portion is positioned at the one end side in the width direction. In the receiver-integrated condenser, the connector is disposed at a lower side of the refrigerant outlet portion, and the connector has a refrigerant outlet port opened toward downwardly and a bottom surface used as a connection surface connecting with a pipe connector of the refrigerant pipe. Accordingly, the pipe connector of the refrigerant pipe can be disposed at a direct lower side of the connector of the refrigerant outlet portion, and the connection between the connector of the refrigerant outlet portion of the super-cooling portion and the pipe connector can be readily performed. Thus, the connection portion between the connector of the refrigerant outlet portion of the super-cooling portion and the pipe connector can be arranged in a lower mounting area of the receiver-integrated condenser, and the mounting performance of the receiver-integrated condenser on the vehicle can be improved. As a result, the connector and the pipe connector are not positioned directly under the receiving unit, and a cap member disposed at a bottom portion of the receiving unit can be detachably disposed.
Alternatively, the connector is connected to the refrigerant outlet portion of the super-cooling portion to be shifted to a side of the receiving unit when being viewed from an upper side of the receiving unit. In this case, the connector has a refrigerant outlet port opened toward upwardly, and a top surface used as a connection surface connecting with a pipe connector of the refrigerant pipe. Accordingly, connection operation of the connector of the refrigerant outlet portion of the super-cooling portion and the pipe connector can be readily performed. Even in this case, the cap member of the receiving unit can be detachably disposed.
REFERENCES:
patent: 5546761 (1996-08-01), Matsuo et al.
patent: 5875650 (1999-03-01), Nobuta et al.
patent: 5927102 (1999-07-01), Matsuo et al.
patent: 6397627 (2002-06-01), Aki et al.
patent: 8-183325 (1996-07-01), None
Shibata Kazuji
Yoshida Yoshio
Denso Corporation
Esquivel Denise L.
Harness Dickey & Pierce PLC
Jones Melvin
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