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Patent Searching and Data


Title:
ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/186695
Kind Code:
A1
Abstract:
This rotary shaft for a rotary compressor comprises a first coupling shaft part, which extends between a first crank part and a second crank part, and a second coupling shaft part, which extends between the second crank part and a third crank part. The first coupling shaft part has a cross-sectional shape including: a first outer surface (S1) which is formed on the side opposite of the eccentric direction of the first crank part, and in which at least an intermediate portion is circularly curved; a second outer surface (S2) which is formed on the side opposite of the eccentric direction of the second crank part, and in which at least an intermediate portion is circularly curved; and a third outer surface (S3) which extends between the first outer surface and the second outer surface at a position away from the center of rotation of the rotary shaft. In a cross-section orthogonal to the axial direction of the rotary shaft of the first coupling shaft part, if L1 is the distance from the center of rotation (O2) of the rotary shaft to an intersection point (P) at which the first outer surface and the second outer surface intersect on one end-side, L2 is the distance from the center of rotation (O2) of the rotary shaft to an intersection point (60) at which the first outer surface and the second outer surface intersect on the other end-side, and L3 is the distance from the center of rotation (O2) of the rotary shaft to the third outer surfaces, then the relationship L1>L3≥L2 is satisfied.

Inventors:
HIRAYAMA, Takuya (336 Tadehara, Fuji-sh, Shizuoka 21, 〒4168521, JP)
Application Number:
JP2018/012424
Publication Date:
October 03, 2019
Filing Date:
March 27, 2018
Export Citation:
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Assignee:
TOSHIBA CARRIER CORPORATION (72-34, Horikawa-cho Saiwai-ku, Kawasaki-sh, Kanagawa 85, 〒2128585, JP)
International Classes:
F04C29/00; F04C23/00
Domestic Patent References:
WO2009028633A12009-03-05
WO2015198539A12015-12-30
Foreign References:
JPH0610863A1994-01-21
JP2013096280A2013-05-20
JP2010071265A2010-04-02
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (SUZUYE & SUZUYE BLDG, 1-12-9 Toranomon, Minato-k, Tokyo 01, 〒1050001, JP)
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