rotary compressor

Abstract

The present invention provides a rotary compressor in which the eccentric amount of the eccentric shaft portion of the crankshaft is increased and the maximum volume of the compression chamber is increased, which can prevent refrigerant leakage and improve compression efficiency without reducing assembly performance. In this rotary compressor, a pair of compression mechanism parts (10a, 10b) stacked across a partition plate (30) is driven by a crankshaft having two eccentric shaft parts (51a, 51b). The shaft parts (52a, 52b) supported by the side end plates, the shaft parts (52a, 52b) of the crankshaft (50) are formed with different outer diameters, and the eccentric shaft parts (51a, 51b) of the crankshaft are formed with different outer diameters. Formed, the inner diameter of the central through hole (33) of the partition plate (30) is smaller than either of the outer diameters of the eccentric shaft portion (51a, 51b) of the crankshaft (50), and the partition plate (30) is divided to surround the crankshaft (50) to insert part (53) of the divider plate.

Description

technical field [0001] The present invention relates to a rotary compressor, and more particularly to a rotary compressor having a plurality of cylinders with partition plates disposed between the cylinders. Background technique [0002] The rotary compressor has an airtight container (hereinafter referred to as "casing"), a drive unit (hereinafter referred to as "motor") arranged in the housing, and a compression unit driven by the motor. The compression part is cooled and discharged to the outside of the casing through the discharge pipe. Since this rotary compressor is used in a refrigerator, a freezer, an air conditioner, a water heater, etc., it is required to increase the capacity and reduce the cost. [0003] The compression unit of the single-cylinder rotary compressor has an annular cylinder, an annular rotary piston, vanes that can advance and retreat toward the central axis of the cylinder, a spring, a crankshaft, and a pair of end plates. The annular piston is ...

AI Technical Summary

Problems solved by technology

[0009] However, as described above, when the eccentricity of the eccentric shaft portion of the crankshaft increases, the inner diameter of the central through hole formed on the partition plate also increases, so that in (3), a gap between adjacent cylinders may occur. The compression chambers communicate with each other through the central through hole with a large inner diameter, resulting in a "leakage flow path" and poor compression efficiency

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