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Patent Searching and Data


Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/261410
Kind Code:
A1
Abstract:
The present invention comprises: a fixed scroll in which a first fixed-side tooth tip curved section and a second fixed-side tooth tip curved section having a larger curvature radius than the foregoing first section are formed on a tooth tip of a scroll tooth, and in which a fixed-side root curved section is formed in a root section on a fixed table plate side of the scroll tooth; and a rocking scroll in which a rocking-side tooth tip curved section is formed on a tooth tip of the scroll tooth, and in which a first rocking-side root curved section and a second rocking-side root curved section having a larger curvature radius than that the foregoing first section are formed in a root section on a rocking table plate side of the scroll tooth. The second fixed-side tooth tip curved section and the second rocking-side root curved section are formed, in a scroll tooth of each scroll, in at least a part of or an entirety of a range including: a first arc section extending from a center-side end point of an outer involute curve toward a scroll center; and a second arc section extending from a center-side end point of an inner involute curve toward the scroll center. Due to this configuration, refrigerant leakage can be reduced while sufficiently ensuring fatigue strength at the center of the scroll tooth, and the compression efficiency can be improved while ensuring reliability.

Inventors:
UKAI MITSUYOSHI (JP)
YANO KENJI (JP)
MATSUI TOMOKAZU (JP)
TAKAMURA YUJI (JP)
FUKUHARA KOICHI (JP)
Application Number:
PCT/JP2019/025319
Publication Date:
December 30, 2020
Filing Date:
June 26, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/02
Foreign References:
JPS6176185U1986-05-22
JP2008309020A2008-12-25
JPH10122167A1998-05-12
JP2001055989A2001-02-27
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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