Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit

Abstract

The invention provides a rotary compressor used to structurally simplify a laminae which divides a cylinder into a low-pressure chamber and a high-pressure chamber; in addition, the invention provides a multi-stage rotary compressor, the manufacturing method thereof and a defrosting device used in a coolant loop. The rotary compressor(10)comprises a first and a second rotary compressing units(32,34) which are driven via an electromotor(14) arranged in a sealed container(12). The first rotary compressing unit(32)is composed of an upper cylinder(38), a swinging piston(110) for a roller(112)which is connected with an eccentric unit(42)on the rotary shaft(16)of the electromotor(14) and eccentrically moves inside the upper cylinder(38), and a laminae(114) which is molded on the swinging piston(110) and protrudes in the radial direction from the roller(112)to divide the upper cylinder(38)into a low-pressure chamber and a high-pressure chamber. A retaining member is arranged to retain the laminae(114) of the swinging piston(110)in a sliding and swingy mode.

Description

[0001] This application is a divisional application of the patent application filed on August 28, 2002 with the title of "rotary compressor, its manufacturing method, and a box removal device using the compressor" and application number 02142300.8. technical field [0002] The present invention relates to an airtight container with an electric unit and a rotary compression unit driven by the electric unit for CO 2 A rotary compressor that compresses the refrigerant. [0003] The present invention also relates to a multi-stage compression type rotary compressor that sucks refrigerant gas compressed and discharged by the first rotary compression unit to the second rotary compression unit, compresses it, and discharges it, a manufacturing method thereof, and a compressor using the same. The defrosting device of the refrigerant circuit of the machine. Background technique [0004] A conventional internal intermediate pressure type multi-stage compression type rotary compressor ...

AI Technical Summary

Problems solved by technology

[0026] However, in this case, the discharge side of the first rotary compression unit communicates with the discharge side of the second rotary compression unit, so that the suction side and the discharge side of the second rotary compression unit are at the same pressure, so there is a second rotary compression unit. Unstable operation of the 2nd rotary compression unit such as blade jumping of the compression unit

Images