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:
Jun. 30, 2026
Filed:
Aug. 22, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Viraj Vartak, Ferndale, MI (US);
Satish P. Ketkar, Troy, MI (US);
Nathan John English, Brighton, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A vapor injection refrigerant system includes a compressor including at least first and second stage inputs, and an output arranged to provide output vapor refrigerant. A condenser is fluidly coupled to the output of the compressor to receive the output vapor refrigerant, and an evaporator is fluidly coupled between the condenser and the first stage input. The evaporator is arranged to provide refrigerant in vapor to the first stage input of the compressor. A chiller is fluidly coupled between the condenser and both the first and second stage inputs. The chiller is arranged to inject refrigerant in vapor form into the first stage input or the second stage input. A bypass branch fluidly couples the output of the compressor to the first stage input of the compressor to provide at least some of the output vapor refrigerant to the first stage input without routing through the condenser, evaporator, and chiller.