Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/188738
Kind Code:
A1
Abstract:
The outer curve of one spiral is defined using a basic curve and a group of circles having a radius of eλ, and the inner curve thereof is defined using an inversion curve and a group of circles having a radius of eλ. The inner curve of the other spiral is defined using the basic curve and a group of circles having a radius of e(1 − λ), and the outer curve thereof is defined using the inversion curve and a group of circles having a radius of e(1 − λ). In the foregoing, e represents an orbit radius of an orbiting scroll, λ represents a dissimilar tooth thickness ratio when the tooth thickness of the fixed spiral is tf and the tooth thickness of the orbiting spiral is tO, where λ = tf/(tf+tO) and λ satisfies 0 <λ < 1. The basic curve is a curve defined by equation (1) and equation (2) using an involute angle θ, where w(θ) is a function that varies in a sinusoidal or cosine waveform with a period of π [rad] with respect to the involute angle θ.
Equation (1): x = a(cosθ + w(θ)sinθ)
Equation (2): y = a(sinθ − w(θ)cosθ)
Inventors:
IWATAKE WATARU (JP)
SEKIYA SHIN (JP)
KAWAMURA RAITO (JP)
SEKIYA SHIN (JP)
KAWAMURA RAITO (JP)
Application Number:
PCT/JP2019/011433
Publication Date:
September 24, 2020
Filing Date:
March 19, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C18/02
Foreign References:
| JPH1054380A | 1998-02-24 | |||
| JP2017089491A | 2017-05-25 | |||
| JPH05223071A | 1993-08-31 | |||
| JPH06137286A | 1994-05-17 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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