초록 ▼

A rotary compressor of the present invention includes a compression mechanism, motor and hermetically sealed housing. The compression mechanism includes compression elements, a rotary shaft and bearing. The compression elements includes a cylinder block, piston, and vane. The cylinder block has a cy

A rotary compressor of the present invention includes a compression mechanism, motor and hermetically sealed housing. The compression mechanism includes compression elements, a rotary shaft and bearing. The compression elements includes a cylinder block, piston, and vane. The cylinder block has a cylinder hole and vane groove. The compression mechanism and the motor are housed in the hermetically sealed housing. The cylinder block is made up of sintered metal. The compression mechanism is welded to the hermetically sealed housing in a region other than the cylinder block. Preferably, the cylinder block includes a first cylinder block and a second cylinder block, and the first cylinder block and the second cylinder block are formed by machining sinter-molded blanks identical in shape. With this configuration, it is possible to reduce the machining processes and to make the blank parts usable in common, thereby realizing a low-cost compressor.

대표청구항 ▼

1. A rotary compressor comprising:(a) a compression mechanism including compression elements, a rotary shaft, a main bearing, and a sub-bearing; in which said compression elements include a cylinder block, a piston and a vane, said cylinder block includes a cylinder hole and a vane groove, said vane

1. A rotary compressor comprising:(a) a compression mechanism including compression elements, a rotary shaft, a main bearing, and a sub-bearing; in which said compression elements include a cylinder block, a piston and a vane, said cylinder block includes a cylinder hole and a vane groove, said vane groove is diametrically connected to said cylinder hole, said piston eccentrically rotates in said cylinder hole, said vane reciprocally moves in said vane groove while being in contact with said piston, said rotary shaft includes an eccentric portion to drive said piston with the phase shifted by 180 degrees, and said main bearing and said sub-bearing serve to close the end of said cylinder hole and to bear said rotary shaft; (b) a motor; and (c) a hermetically sealed housing in which said compression mechanism and said motor are housed, wherein said cylinder block is made of sintered metal, said cylinder block being machined from a sinter-molded blank, said sinter-molded blank including a land, and at least said cylinder hole and said vane groove, and said land at an intersection of said cylinder hole and a cylinder block end, and at an intersection of said vane groove and said cylinder block end.