Scroll compressor capacity modulation with solenoid mounted outside a compressor shell

US8840384B2 · kind B2 · utility

Assignee

• DANFOSS SCROLL TECHNOLOGIES, LLC

Inventors

• Tapesh P. Patel
• Gene Fields · Arkadelphia, US
• Joe T. Hill · Bristol, US
• Tracy L. Milliff · Bristol, US
• Harshal Upadhye · Charlotte, US
• Behzad Parastar · Kolding, DK
• Ole Holst Christensen · Kolding, DK

Key dates

• Filing date: Sep 8, 2009
• Grant date: Sep 23, 2014
• Expiry date: Jun 4, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2270/58
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.