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Patent Searching and Data


Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/220698
Kind Code:
A1
Abstract:
This scroll compressor is provided with: a sealed vessel; a fixed scroll; a rocking scroll; a main shaft having a main shaft part and a rocking shaft part; a main bearing that holds the main shaft part so that the main shaft part is radially rotatable; an auxiliary main bearing extending under the main bearing; and a motor having a stator and a rotor. The main shaft has: a first oil supply path for transporting a refrigerator oil; a first oil supply hole for supplying the refrigerator oil to the main bearing and the auxiliary main bearing; a second oil supply path that branches from a middle portion of the first oil supply path, is formed side-by-side with the first oil supply path, and transports the refrigerator oil; and a second oil supply hole which is formed branching from the second oil supply path and communicates the second oil supply path and the auxiliary main bearing. The main shaft part is provided with a switching valve which closes the first oil supply path and opens the second oil supply path when the rotation speed of the main shaft is no greater than a preset rotation speed, and which opens the first oil supply path and closes the second oil supply path when the main shaft reaches the preset rotation speed.

Inventors:
MISAKA, Rei (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
MYOGAHARA, Masashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/020036
Publication Date:
December 06, 2018
Filing Date:
May 30, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F04C18/02; F04C29/02
Foreign References:
JP2014129757A2014-07-10
JPH03237287A1991-10-23
JPS58183887A1983-10-27
US20120263609A12012-10-18
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (East 8F, TORANOMON TWIN BLDG. 10-1 Toranomon 2-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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