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Dual capacity compressor

A compressor and dual-capacity technology, applied in the field of compressors, can solve problems such as inability to guarantee work stability, difficulty in accurate movement, etc., and achieve the effects of improving work stability and efficiency and preventing relative rotation.

Inactive Publication Date: 2004-09-08
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, since the accurate movement of the pin from the eccentric to the cam through the holes is difficult, the stability of the work cannot be guaranteed

Method used

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Examples

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no. 1 example

[0061] Figure 5A and 5B A side view and a plan view of a dual capacity compressor according to a first embodiment of the present invention are shown, wherein components of the dual capacity compressor are shown in an assembled state through partial cutaway for easy understanding and clarity. Figures 6A-11C With the individual components shown, a first preferred embodiment of the present invention will be described below with reference to these drawings.

[0062] The dual capacity compressor of the first preferred embodiment comprises: a crank pin 110 having a pair of opposing key member mounting portions 111 in an oblique position; an eccentric sleeve 120 for locally restricting the rotation of the protruding portion of the key member and a key member 130 for being installed through the key member mounting portion 111 so that at least a part of it protrudes from the crank pin 110. The other components included in the dual capacity compressor are the same as Figure 4 The ...

no. 2 example

[0075] The dual-capacity compressor of the second embodiment of the present invention has a completely different key member mounting portion from the compressor of the first embodiment.

[0076] Figure 12A and 12B Respectively represent a side view and a plan view of a dual-capacity compressor according to a second embodiment of the present invention; Figure 13-15C Indicates its main components. As with the first embodiment, the components are shown in an assembled state and include partial cross-sections for ease and clarity of illustration. Next, a second preferred embodiment of the present invention will be described with reference to the above-mentioned drawings.

[0077] The dual-capacity compressor 200 of the second preferred embodiment includes: a crank pin 210 having a pair of opposing and parallel key member mounting portions 211; an eccentric sleeve 220 for partially restricting the rotation of the protruding portion of the key; And a key member 230 for mountin...

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Abstract

A dual capacity compressor is provided to prevent relative movement between parts that maintain eccentricity. To this end, the dual capacity compressor comprises a power generating unit having reversible motor, and a crank shaft inserted into the motor; a compressing unit having a cylinder, a piston and a connecting rod connected with the piston; a crank pin eccentrically formed on an upper end portion of the crank shaft; a eccentric sleeve mounted between the crank pin and one end of the connecting rod; and a key member for completely restricting the eccentric sleeve to the crank pin.

Description

technical field [0001] The present invention relates to a compressor for compressing a working fluid such as a refrigerant to a required pressure, and more particularly to a compressor whose compression capacity can vary with the direction of rotation. Background technique [0002] A dual capacity compressor is a reciprocating compressor whose piston stroke and thus compression capacity are varied by means of an eccentric sleeve rotatably connected to the crank pin of the crankshaft, the position of which relative to the crank pin is determined by the motor and the direction of rotation of the crankshaft. Because the compression capacity of the dual-capacity compressor can vary with the required load, the dual-capacity compressor is widely used in devices that need to compress working fluid, especially in household appliances that need to work in a refrigeration cycle such as refrigerators , in order to improve work efficiency. US Patent 4236874 discloses a conventional du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B35/01F01C1/02F04B49/12F16C3/28F16H21/20
CPCF16H21/20F16C3/28F04B49/126
Inventor 裵英珠金钟奉卢铁基沈在性姜达守徐敏荣金贤朴垌俊金碁株金希玹
Owner LG ELECTRONICS INC
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