Refrigeration – Refrigeration producer – With refrigerant treater
Reexamination Certificate
1999-11-29
2001-04-03
Doerrler, William (Department: 3744)
Refrigeration
Refrigeration producer
With refrigerant treater
C062S503000
Reexamination Certificate
active
06209347
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
The present invention relates to an improved adsorbent unit which contains a separate compartment containing refrigerant tracer for use in a refrigerant accumulator of an automotive air conditioning system.
In the past, a refrigerant tracer was placed in direct contact with the desiccant in an adsorbent unit of an automotive air conditioning system to detect refrigerant leaks in the system by displaying the color of the tracer at the point of leakage. However, when the desiccant of the adsorbent unit was tested for water content, the tracer, which was in direct contact with the desiccant, caused erroneously high water content readings to be obtained. It is with overcoming the foregoing deficiency of prior adsorbent units that the present invention is concerned.
BRIEF SUMMARY OF THE INVENTION
It is the object of the present invention to integrate a refrigerant tracer into a separate compartment on the adsorbent unit which is used in an air conditioning system without producing erroneously high water content readings of a tested desiccant. Other objects and attendant advantages of the present invention will readily be perceived hereafter.
The present invention relates to an adsorbent unit for an air conditioning system comprising a porous container, adsorbent in said container, a refrigerant tracer, and a separate compartment on said adsorbent unit containing said refrigerant tracer.
The present invention also relates to an adsorbent unit comprising a porous adsorbent container having a width, adsorbent in said container, a tab extending outwardly from said container, an elongated slot in said tab extending in the direction of said width of said container and said tab having a length which approximates the widest portion of said container, and a compartment on said tab containing a refrigerant tracer.
The present invention also relates to an adsorbent unit for mounting relative to a U-bend pipe of a refrigerant accumulator having spaced pipes and a return bend comprising a porous container, adsorbent in said container, first and second end portions on said container, first mounting means on said first end portion for placement about said spaced pipes with said container located between said first mounting means and said return bend, second mounting means at said second end of said container for mounting relative to said return bend, and a compartment on said adsorbent unit containing a refrigerant tracer.
The present invention also relates to a refrigerant accumulator having a housing with a bottom wall and a side wall and a U-shaped pipe with a return bend adjacent said bottom wall and with first and second pipe portions extending from said return bend along said side wall, and a filter body extending outwardly from said return bend, the improvement of an adsorbent unit comprising a porous adsorbent container, adsorbent in said container, first and second end portions on said container, first means on said first end portion for mounting said adsorbent container relative to said first and second pipe portions, second means on said second end portion for mounting said adsorbent container relative to said return bend, and a compartment on said adsorbent unit containing a refrigerant tracer.
The various aspects of the present invention will be more fully understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:
REFERENCES:
patent: 4405347 (1983-09-01), Cullen et al.
patent: 4911739 (1990-03-01), Cullen et al.
patent: 5036972 (1991-08-01), Cullen et al.
patent: 5650563 (1997-07-01), Cooper et al.
patent: 5651266 (1997-07-01), Hutchison et al.
Corrigan Daniel L.
Goulet Kevin J.
Konieczy Donald L.
Millen Peter R.
Olesnavich Michael A.
Doerrler William
Gastel Joseph P.
Jones Melvin
Multisorb Technologies, Inc.
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