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Oil supply apparatus for hermetic compressor

a technology of oil supply apparatus and compressor, which is applied in the direction of positive displacement liquid engine, pump components, piston pumps, etc., can solve the problems of deteriorating compressor efficiency and compressor efficiency, and achieve the effect of efficiently cooling a cylinder and improving compressor efficiency

Inactive Publication Date: 2005-12-08
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an oil supply apparatus for a hermetic compressor that improves efficiency by effectively cooling the cylinder by supplying oil stored at a lower portion of the casing to the cylinder. The apparatus includes an oil feeder, oil passage, oil injection hole, and a sleeve with a sealed top surface. The oil injection hole is inclined in the rotary direction of the crank shaft and is positioned to inject the oil into the cylinder for compressing fluid. The technical effects of the invention include improved compressor efficiency, reduced energy consumption, and improved performance.

Problems solved by technology

Accordingly, the cylinder 126 is not sufficiently cooled, and thus efficiency of the compressor is deteriorated.
However, the conventional oil supply apparatus does not sufficiently supply the oil 106 to the cylinder 126, and thus not efficiently cool the cylinder 126, thereby deteriorating efficiency of the compressor.

Method used

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  • Oil supply apparatus for hermetic compressor
  • Oil supply apparatus for hermetic compressor
  • Oil supply apparatus for hermetic compressor

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first embodiment

[0042]FIG. 5 is a cross-sectional view illustrating a hermetic compressor in accordance with the present invention.

[0043] The hermetic compressor includes a casing 10 having a hermetic space, is being connected to a suction tube 12 and a discharge tube (not shown), and storing oil 18 at its lower portion, a driving unit 14 disposed at the lower portion of the casing 10, for generating a rotary force, a compression unit 16 disposed at the upper portion of the casing 10, for compressing fluid sucked into the suction tube 12 by the rotary force generated by the driving unit 14, and discharging the compressed fluid to the discharge tube (not shown), and an oil supply apparatus for supplying the oil 18 to rubbed parts of the compression unit 16, and also supplying the oil 18 to a cylinder 20 of the compression unit 16.

[0044] The driving unit 14 includes a stator 24 damply supported by damping springs 22 mounted at the lower portion of the casing 10, for receiving power from an external ...

second embodiment

[0066] In the oil supply apparatus for the hermetic compressor of the second embodiment, the oil injected through the upper oil injection hole 72 formed on the sleeve 70 is supplied to the head cover 48 as indicated by arrows E, for cooling the head cover 48, and the oil injected through the lower oil injection hole 74 formed on the sleeve 70 is supplied to the cylinder 20 as indicated by arrows F, for cooling the cylinder 20.

[0067]FIG. 13 is a graph showing P-V lines of the hermetic compressor in accordance with the present invention. The oil supply apparatus for the hermetic compressor cools the cylinder, and thus reduces the temperature of the refrigerants compressed in the cylinder, thereby performing the isothermal process. As shown in FIG. 13, the line M of the present invention is lower than the general line L in the compression process of 1 to 2. Therefore, the input for the operation of the compressor can be reduced by the section N, which results in high efficiency of the ...

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Abstract

Disclosed is an oil supply apparatus for a hermetic compressor including an oil feeder mounted at a bottom end of a crank shaft rotated by a driving unit, for sucking oil, an oil passage formed inside the crank shaft, for guiding the oil sucked by the oil feeder, and an oil injection hole formed on a sleeve inserted onto an eccentric unit formed at the top end of the crank shaft, for injecting the oil sucked into the oil passage into a cylinder for compressing fluid. The oil supply apparatus for the hermetic compressor improves efficiency of the compressor by efficiently cooling the cylinder by sufficiently supplying the oil stored at the lower portion of the casing to the cylinder.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an oil supply apparatus for a hermetic compressor, and more particularly to, an oil supply apparatus for a hermetic compressor which can improve efficiency of the compressor by cooling a cylinder by mainly supplying oil to the cylinder. [0003] 2. Description of the Background Art In general, various types of compressors can be employed according to compression methods. A hermetic reciprocal type compressor has been mostly used for an air conditioning apparatus requiring a small size and a light weight. [0004]FIG. 1 is a cross-sectional view illustrating a conventional hermetic compressor. [0005] The conventional hermetic compressor includes a casing 104 having a hermetic space, being connected to a suction tube 102 and a discharge tube (not shown), and storing oil 106 at its lower portion, a driving unit 108 disposed at the lower portion of the casing 104, for generating a rotary for...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B17/00F04B39/00F04B39/02
CPCF04B39/0253
Inventor CHUNG, MOON-KEEAN, KWANG-HYUPKIM, JONG-HOONLEE, JEONG-HOREW, HO-SEON
Owner LG ELECTRONICS INC