Seal structure for use in housing of compressor

Details Seal structure for use in housing of compressor Seal structure for use in housing of compressor

2002-04-18

2004-04-20

Pickard, Alison K. (Department: 3676)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for other than internal combustion engine, or...

C277S650000

Reexamination Certificate

active

06722666

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a seal structure for use in a housing of a compressor which constitutes a refrigerant circuit in an air conditioner.
In general, a housing of a compressor includes a plurality of members that is joined with one another by a plurality of bolts. A single seal or a plurality of seals is interposed at a joint between the members so as to prevent gas and lubricating oil from leaking out of the housing.
Unexamined Japanese Patent Publication No. 9-42156 discloses a dual seal structure for use in a housing of a compressor. As shown in
FIG. 4
, a front case
44
and a motor case
49
are joined by a frame
60
to form the housing. At a joint between the front case
44
and the frame
60
, O-rings
72
and
74
are respectively interposed on the inner circumferential side and the outer circumferential side of the housing. In a similar manner, at a joint between the frame
60
and the motor case
49
, O-rings
78
and
76
are respectively interposed on the inner circumferential side and the outer circumferential side of the housing. In the above constitution, even if the gas and lubricating oil leak from the inner O-rings
72
and
78
, the leaked gas and lubricating oil are sealed by the outer O-rings
74
and
76
. Thus, sealing performance is improved.
In recent years, the use of high-pressure gas such as carbon dioxide as a refrigerant for air conditioners has been proposed to reduce environmental problems. However, carbon dioxide tends to permeate a rubber material. For this reason, mere seal structure made of rubber cannot adequately prevent the gas and lubricating oil from leaking even if the dual O-ring is applied.
SUMMARY OF THE INVENTION
The present invention is directed to a simple seal structure for use in a compressor housing whose seal structure ensures substantially high sealing performance and a compressor with the same seal structure.
According to the present invention, a seal structure for use in a compressor has a first member, a second member, an O-ring and a gasket. The first member and the second member constitute a housing of the compressor. The first member and the second member are joined to each other at a joint. The O-ring and the gasket are interposed at the joint.


REFERENCES:
patent: 3249119 (1966-05-01), Pollack
patent: 3355181 (1967-11-01), Olson
patent: 3467398 (1969-09-01), Bernard
patent: 3531133 (1970-09-01), Sheesley et al.
patent: 4011029 (1977-03-01), Shimizu
patent: 4095809 (1978-06-01), Smith
patent: 4226572 (1980-10-01), Nakayama et al.
patent: 4265495 (1981-05-01), Backlin
patent: 4381178 (1983-04-01), Nakayama et al.
patent: 4416190 (1983-11-01), Ishizuka
patent: 4470772 (1984-09-01), Gannaway
patent: 4522567 (1985-06-01), Kato et al.
patent: 4652217 (1987-03-01), Shibuya
patent: 5244363 (1993-09-01), Olson
patent: 6030184 (2000-02-01), Ikeda et al.
patent: 6120259 (2000-09-01), Miyaji et al.
patent: 6227814 (2001-05-01), Yokomachi et al.
patent: 6260851 (2001-07-01), Baron
patent: 6322086 (2001-11-01), Yokomachi et al.
patent: 6402159 (2002-06-01), Kohn
patent: 6443502 (2002-09-01), Iida et al.
patent: 2001/0050464 (2001-12-01), Kuramoto et al.
patent: 19610060 (1996-09-01), None
patent: 09-042156 (1997-02-01), None
patent: 11-343974 (1999-12-01), None
patent: 2000-170656 (2000-06-01), None

Affiliated with

Also associated with

Rating

Seal structure for use in housing of compressor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seal structure for use in housing of compressor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seal structure for use in housing of compressor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3217554