Fluid machine and fluid machine system equipped with the same

• US 10,100,792 B2
• Filed: 02/21/2013
• Issued: 10/16/2018
• Est. Priority Date: 02/21/2013
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries, Ltd.
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Kanzaka, Tadashi, Tomita, Isao, Ozaki, Makoto, Wakashima, Koji
• Primary Examiner(s): Laurenzi, Mark
• Assistant Examiner(s): France, Mickey
• Application Number:
  US14/761,547
• Publication Number:
  US 20150337780A1
• Time in Patent Office: 2,063 Days
• Field of Search: 415203, 415204, 415206
• CPC Class Codes: F02B 37/00 Engines characterised by provision of pumps driven at least for part of the time by exhaust
• CPC Class Codes: F02M 35/10131 Ducts situated in more than one plane; Ducts of one plane crossing ducts of another plane
• CPC Class Codes: F04D 25/04 the pump being fluid-driven pumps driven by exhaust gases F02B37/00, F02B39/00; turbochargers F02C6/12
• CPC Class Codes: F04D 29/4206 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/4213 suction ports
• CPC Class Codes: F04D 29/441 especially adapted for elastic fluid pumps
• CPC Class Codes: F05D 2250/51 Inlet
• CPC Class Codes: F05D 2260/14 Preswirling
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An object is to provide a fluid machine whereby it is possible to improve performance, for example, expand a flow-rate operation rage with a simplified shape of an intake pipe. A fluid machine includes an impeller mounted to a rotation shaft, a housing which houses the impeller rotatably, and an intake pipe for supplying a fluid to the housing. The intake pipe includes at least a first bend portion disposed on a first plane, and a second bend portion disposed at a downstream side of the first bend portion and on a second plane which is different from the first plane. The second bend portion includes an upstream section having a center axis oriented along a center axis of a downstream section of the first bend portion and a downstream section having a center axis oriented along an axial direction of the impeller at a front of the impeller. The intake pipe has a constant cross-sectional shape from an upstream end of the first bend portion to a downstream end of the second bend portion.

Claims

1. A fluid machine, comprising:

an impeller mounted to a rotation shaft;

a housing which houses the impeller rotatably; and

an intake pipe for supplying a fluid to the housing,

wherein the intake pipe includes at least;

a first bend portion disposed on a first plane; and

a second bend portion disposed at a downstream side of the first bend portion and on a second plane which is different from the first plane, the second bend portion including an upstream section having a center axis oriented along a center axis of a downstream section of the first bend portion and a downstream section having a center axis oriented along an axial direction of the impeller at a front of the impeller,

wherein the intake pipe has a constant cross-sectional shape from an upstream end of the first bend portion to a downstream end of the second bend portion, and

wherein a distance between an intersection between the center axes of the upstream section and the downstream section of the first bend portion, and the intersection between the center axes of the upstream section and the downstream section of the second bend portion is not more than three times the pipe diameter of the intake pipe.

2. The fluid machine according to claim 1,

wherein a bending angle of the first bend portion is in a range of not less than 30°

and not more than 150°

, and a bending angle of the second bend portion is in a range of not less than 45° and

not more than 100°

.

3. The hydraulic machine according to claim 2,

wherein the bending angle of the first bend portion is in a range of not less than 45°

and not more than 90°

, and the bending angle of the second bend portion is in a range of not less than 45° and

not more than 90°

.

4. The hydraulic machine according to claim 1,

wherein an intersection angle between the first plane and the second plane is in a range of not less than 45°

and not more than 135°

.

5. The hydraulic machine according to claim 1,

wherein a distance between:

an intersection between the center axes of the upstream section and the downstream section of the second bend portion; and

a front end of vanes of the impeller is not more than five times a pipe diameter of the intake pipe.

6. The hydraulic machine according to claim 1,

wherein, in a front view of the impeller, a right or left rotational direction of the impeller is the same direction as a right or left bending direction of the first bend portion from an upstream side to a downstream side.

7. The hydraulic machine according to claim 1,

wherein, in a front view of the impeller, a right or left rotational direction of the impeller is opposite to a right or left bending direction of the first bend portion from an upstream side to a downstream side.

8. The fluid machine according to claim 1,

wherein the fluid machine is a compressor of a turbocharger for an automobile.

9. A hydraulic machine system, comprising:

a first hydraulic machine and a second hydraulic machine each of which is the hydraulic machine according to claim 1; and

a collecting pipe for collecting a compressed fluid supplied from the first hydraulic machine and the second hydraulic machine and causing the compressed fluid to flow downstream,

wherein, a relationship between a swirling direction of the fluid supplied to the housing and a swirling direction of the impeller is a same-direction relationship or an opposite-direction relationship in both of the first fluid machine and the second fluid machine, in a front view of each of the impellers.

10. The hydraulic machine system according to claim 9,

wherein the second fluid machine is disposed at a position rotated by 180°

from a position of the first fluid machine with respect to an optional symmetrical axis orthogonal to an axial direction of the rotation shaft of the first fluid machine, and

wherein the impellers of the first fluid machine and the second fluid machine have the same rotational direction in a front view of each of the impellers.

11. A hydraulic machine system comprising:

a first fluid machine; and

a second fluid machine which further compresses a compressed fluid supplied from the first fluid machine,

wherein at least the second fluid machine comprises the fluid machine according to claim 1.

12. The fluid machine according to claim 1,

wherein the intake pipe includes a straight pipe portion having an upstream end connected to a downstream end of the second bend portion and a downstream end connected to the housing, and

wherein a distance between an intersection between the center axes of the upstream section and the downstream section of the second bend portion, and a front end of vanes of the impeller is not more than five times a pipe diameter of the intake pipe.