SCROLL-TYPE COMPRESSOR

摘要

A scroll-type compressor includes: a movable scroll including a low-stage movable tooth portion having a spiral shape and protruding from a first side of a movable substrate portion in an axial direction, and a high-stage movable tooth portion having a spiral shape and protruding from a second side of the movable substrate portion in the axial direction; and a shaft arranged to extend through the movable substrate portion and causing the movable scroll to undergo revolution motion. A low-stage compression mechanism and a high-stage movable compression mechanism are provided on opposite sides of the movable substrate portion in the axial direction. The numbers of curling of the low-stage movable tooth portion and the high-stage movable tooth portion are set to be one.

主权项

1. A scroll-type compressor comprising:
a rotation shaft rotating by receiving a drive force from a rotational drive source; a movable scroll revolving by a rotational drive force transmitted from the rotation shaft, the movable scroll including a movable substrate portion having a flat-plate shape, a low-stage movable tooth portion having a spiral shape and protruding from the movable substrate portion to a first side in an axial direction of the rotation shaft, and a high-stage movable tooth portion having a spiral shape and protruding from the movable substrate portion to a second side in the axial direction of the rotation shaft; a low-stage fixed scroll including a low-stage substrate portion having a flat-plate shape, and a low-stage fixed tooth portion having a spiral shape, protruding from the low-stage substrate portion in the axial direction of the rotation shaft and engaging with the low-stage movable tooth portion; a high-stage fixed scroll including a high-stage substrate portion having a flat-plate shape, and a high-stage fixed tooth portion having a spiral shape, protruding from the high-stage substrate portion in the axial direction of the rotation shaft and engaging with the high-stage movable tooth portion; a low-stage compression chamber that is a space provided between the low-stage movable tooth portion and the low-stage fixed tooth portion, the low-stage compression chamber changing in volume in accordance with revolution of the movable scroll to pressurize a fluid sucked from an outside; and a high-stage compression chamber that is a space provided between the high-stage movable tooth portion and the high-stage fixed tooth portion, the high-stage compression chamber changing in volume in accordance with revolution of the movable scroll to pressurize the fluid pressurized in the low-stage compression chamber, wherein the rotation shaft extends through the movable substrate portion, and a number of curling of at least one of the low-stage movable tooth portion and the high-stage movable tooth portion is less than or equal to one.