Donald Robert Fiegel

US Patent:

6120255, Sep 19, 2000

Filed:

Jan 16, 1998

Appl. No.:

9/007972

Inventors:

Stanley P. Schumann - Sidney OH
Donald R. Fiegel - New Knoxville OH
Jeffrey L. Berning - Fort Loramie OH

Assignee:

Copeland Corporation - Sidney OH

International Classification:

F04B 4906

US Classification:

417213

Abstract:

An improved capacity modulation system for scroll-type compressors is disclosed in which a valve body of a solenoid valve assembly is secured to the inner wall of the hermetic shell and the actuating coil is mounted on the outer surface thereof. The actuating coil includes a plunger/valve member which cooperates with passages provided in the valve body to selectively actuate the capacity modulation arrangement utilizing compressed fluid. The construction offers the advantage that all fluid pressure lines are located within the hermetic shell and thus protected from potential damage, the solenoid coil may be easily changed/replaced to accommodate different available operating voltages and/or malfunction thereof and the system can be easily tested prior to final welding of the outer shell.