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.
Patent No.:
Date of Patent:
Dec. 09, 2025
Filed:
Nov. 20, 2023
Heatcraft Refrigeration Products Llc, Stone Mountain, GA (US);
Janakiraman Kuppuswamy, Decatur, GA (US);
Shitong Zha, Snellville, GA (US);
Heatcraft Refrigeration Products LLC, Stone Mountain, GA (US);
Abstract
A refrigeration system includes a low side heat exchanger configured to receive a first portion of a working fluid from a flash tank. The refrigeration system further includes a header positioned downstream of the low side heat exchanger, wherein the header has one or more inlets configured to receive the working fluid from the low side heat exchanger, a first outlet, and a second outlet. The refrigeration system further includes a check valve positioned downstream of the first outlet, a compressor positioned downstream of the check valve, and an oil drain conduit. The oil drain conduit has an inlet in fluid communication with the second outlet of the header. The drain conduit has an outlet configured to discharge at least a portion of the working fluid to a position downstream of the check valve and upstream of the compressor.