Back to results
US 2014/0369823 A1Published application
Centrifugal compressor
AssigneesMitsubishi Heavy Industries, Ltd., Mitsubishi Heavy Industries Compressor Corporation
InventorShuichi Yamashita
Life of this patent
Estimating the term…
Abstract
A centrifugal compressor for which θ−α>0° and 0°<θ<34°, when the angle formed by a diffuser inlet hub-side line (5a) and the radial direction at a point B in the meridian plane is θ, and the angle formed by a tangent line (3b) and the radial direction at a point A of an impeller hub-side line (3a) nearest the inlet of the diffuser (5) is α. Thus, skewing of the velocity distribution of a gas within the diffuser of the centrifugal compressor is eliminated.
Claims3
A centrifugal compressor comprising:
- an impeller connected to a rotary shaft via a hub;
- and
- a diffuser provided downstream of the impeller, the diffuser having a flow passage which extends in a direction away from the rotary shaft and an outlet which is directed in a radial direction in a meridian plane, characterized in that
- the centrifugal compressor satisfies θ−α>0°
- where
- θ is an angle formed by a diffuser inlet hub-side line with the radial direction in the meridian plane at a point closest to an outlet of the impeller in the diffuser inlet hub-side line, the diffuser inlet hub-side line being a line on the hub side in an inlet of the diffuser, and
- α is an angle formed by a tangent line of an impeller hub-side line with the radial direction in the meridian plane at a point closest to the inlet of the diffuser in the impeller hub-side line, the impeller hub-side line being a line on the hub side in the impeller, and
- a rear edge of the impeller has an inclined angle, the diffuser inlet hub-side line is a straight line, and an angle formed by the diffuser inlet hub-side line and the rear edge of the impeller is substantially 90° or more.
5 more elements
(canceled)
Dependencies are inferred from the claim text.