PURPOSE: To miniaturize a compressor, make it lightweight, and improve its reliability by setting the lap height of the inner periphery section of a front side scroll higher than the lap height of a suction outer periphery section, and setting the lap depth of the inner periphery section of the front side deeper than that of the suction side.
CONSTITUTION: A rotary bearing section 12 driving a rotary scroll 2 is arranged on the inner periphery section of a boss section 2c erected on the back side of the center section of an end plate 2a. A compression chamber 7a on the back side formed on the outer periphery section of the boss section 2c and a compression chamber 8a on the front side across the end plate 2a are communicated with each other by the proper number of connection holes 9. The lap height Hd of a scroll inner periphery section on the front side coupled with the connection holes 9 is set higher than the lap height Hs (Hd>Hs) of a suction outer periphery section in response to the lap height of the compression chamber on the back side of the rotary scroll 2. The lap depth Hd of the inner periphery section of the fixed scroll 1 on the front side is set deeper than that on the suction side.
SUEFUJI KAZUTAKA
KOKUNI KENSAKU
