The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 27, 2016

Filed:

Nov. 12, 2012
Applicant:

Service Solutions U.s. Llc, Charlotte, NC (US);

Inventors:

Michael Schoenoff, Rochester, MN (US);

Mark McMasters, Owatonna, MN (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25B 49/00 (2006.01); F25B 45/00 (2006.01); B60H 1/00 (2006.01);
U.S. Cl.
CPC ...
F25B 45/00 (2013.01); B60H 1/00585 (2013.01); Y10T 137/0318 (2015.04); Y10T 137/6416 (2015.04);
Abstract

A refrigerant recovery unit is provided and includes a safe purging mode. The safe purging mode allows non-condensable gases to be incrementally purged from a storage tank when the determined ideal vapor pressure is high, such as 40 p.s.i., in order to minimize refrigerant loss during purging. The purging can be done in small increments of time, pressure or mass. The storage tank can include a dip tube that extends into the liquid portion of the refrigerant in order to heat up the refrigerant in the tank with the heated recovered refrigerant.


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