密閉型圧縮機及びこれを用いた冷蔵庫

Hermetic compressor and refrigerator using the same

Abstract

PROBLEM TO BE SOLVED: To provide a hermetic compressor capable of enhancing the efficiency and the reliability of the compressor by improving the lubricating oil holding capacity between a piston and a cylinder, and to provide a refrigerator having the same.SOLUTION: The hermetic compressor has compressing elements and electric elements accommodated in the hermetic container, wherein the compressing elements have the piston and the cylinder, the lower end of the crankshaft driven by the electric elements is dipped into the lubricating oil stored in the hermetic container, the lubricating oil is raised by the centrifugal force of the oil pump arranged in the lower end of the crankshaft, and supplies the lubricating oil jetting out from the oil supplying hole of the eccentric shaft eccentrically formed in the upper part of the crankshaft between the cylinder and the piston. The compressor has the lubricating oil supplying part arranged in the cylinder and the lubricating oil storing part arrange in the piston, and the gas releasing part suppressing the stagnation of coolant gas in the lubricating oil storing part when the lubricating oil is supplied from the lubricating oil supplying part to the lubricating oil storing part in the cylinder.
【課題】ピストンとシリンダ間の潤滑油保持性を向上させて圧縮機の効率と信頼性を向上できる密閉型圧縮機及びこれを備えた冷蔵庫を提供することを目的とする。 【解決手段】密閉容器内に収納した圧縮要素及び電動要素を備え、前記圧縮要素はピストン及びシリンダを有し、前記電動要素で駆動されるクランク軸の下端部を前記密閉容器に貯留された潤滑油中に浸し、前記クランク軸の下端部に設けたオイルポンプの遠心力で前記潤滑油を上昇させ、前記クランク軸の上部に偏心して形成した偏心軸の給油穴から噴出する前記潤滑油を前記シリンダと前記ピストンの間に供給する密閉型圧縮機において、前記シリンダに設けた潤滑油供給部と、前記ピストンに設けた潤滑油保持部とを有し、前記潤滑油供給部から前記潤滑油保持部に潤滑油が供給される際に、前記潤滑油保持部における冷媒ガスの滞留を抑制するガス抜き部を前記シリンダに備えたことを特徴とする。 【選択図】 図1

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