Fixed vane-type turbocharger

Patent metadata

Field	Value
Publication number	US-9988939-B2
Application number	US-201113821646-A
Country	US
Kind code	B2
Filing date	Sep 12, 2011
Priority date	Sep 13, 2010
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

A fixed vane-type turbocharger is provided with a fixed vane in a conduit between a bearing housing and a turbine housing. The fixed vane is configured by a movable member disposed on one of the mutually opposing front faces of the bearing housing and the turbine housing so as to be capable of forward and backward movement, and by vanes which are fixed to the front face of the movable member. A pressing member presses the movable member so that the distal ends of the vanes are brought into pressure contact between the rear face of the movable member and either the bearing housing or the turbine housing with the other opposing front face of these. The pressing member contacts the rear face of the movable member within a range in the radial direction where the vanes are disposed, and presses within this range.

First claim

The invention claimed is:

1. A fixed vane-type turbocharger comprising:
a bearing housing having a first face;
a turbine housing connected to the bearing housing via a first conduit;
a compressor housing connected to the bearing housing via a second conduit;
a fixed vane provided in at least one of the first and second conduits, and including:
a ring-shaped member comprising a first face facing the first face of the bearing housing and a second face opposed to the first face and configured to move forward and backward, and
vanes fixed to the second face of the ring-shaped member; and

a disk spring positioned between the first face of the ring-shaped member and the first face of the bearing housing, and the disk spring configured to press the ring-shaped member by pressing force of the disk spring such that distal ends of the vanes are brought into pressure contact with at least one of a face of the turbine housing and the compressor housing facing the vanes,
wherein the disk spring is configured to contact the first face of the ring-shaped member within a range in a radial direction where the vanes are disposed so that the distal ends of the vanes are brought into pressure contact with at least one of the face of the turbine housing and the compressor housing facing the vanes within the range in the radial direction where the vanes are disposed,
wherein the disk spring seals off fluid leakage to the bearing housing through the first surface of the ring-shaped member,
wherein the disk spring is of a truncated conical shape,
wherein an outer peripheral edge of the disk spring contacts the first face of the ring-shaped member, and an inner peripheral edge of the disk spring contacts the first face of the bearing housing, and
wherein a site where the outer circumferential edge of the disk spring contacts the first face of the ring-shaped member is positioned within the range in the radial direction where the vanes are disposed, and the outer circumferential edge presses a circle corresponding to positions of centers of gravity of each of the vanes.

2. The fixed vane-type turbocharger according to claim 1 , wherein the ring-shaped member is made of a heat shield plate.

3. The fixed vane-type turbocharger according to claim 1 , further comprising:
a water-cooling jacket for cooling provided inside the bearing housing,
wherein an inner peripheral edge of the disk spring contacts with a front face of the bearing housing in a position more toward an interior of the bearing housing in the radial direction than a site where the water-cooling jacket is formed.

4. A fixed vane-type turbocharger comprising:
a bearing housing having a first face;
a turbine housing connected to the bearing housing via a first conduit;
a compressor housing connected to the bearing housing via a second conduit;
a ring-shaped member comprising a first face facing the first face of the bearing housing and a second face opposed to the first face and configured to move forward and backward;
vanes fixed to at least one of a face of the turbine housing and the compressor housing facing the second face of the ring-shaped member; and
a disk spring positioned between the first face of the ring-shaped member and the first face of the bearing housing, and the disk spring configured to press the ring-shaped member by pressing force of the disk spring such that distal ends of the vanes are brought into pressure contact with the second face of the ring-shaped member,
wherein the disk spring is configured to contact the first face of the ring-shaped member within a range in a radial direction where the vanes are disposed so that the distal ends of the vanes are brought into pressure contact with the second face of the ring-shaped member within the range in the radial direction where the vanes are disposed,
wherein the disk spring seals off fluid leakage to the bearing housing through the first surface of the ring-shaped member,
wherein the disk spring is of a truncated conical shape,
wherein an outer peripheral edge of the disk spring contacts the first face of the ring-shaped member, and an inner peripheral edge of the disk spring contacts the first face of the bearing housing, and
wherein a site where the outer circumferential edge of the disk spring contacts the first face of the ring-shaped member is positioned within the range in the radial direction where the vanes are disposed, and the outer circumferential edge presses a circle corresponding to positions of centers of gravity of each of the vanes.

5. The fixed vane-type turbocharger according to claim 4 , wherein the ring-shaped member is made of a heat shield plate.

6. The fixed vane-type turbocharger according to claim 4 , further comprising:
a water-cooling jacket for cooling provided inside the bearing housing,
wherein an inner peripheral edge of the disk spring contacts with a front face of the bearing housing in a position more toward an interior of the bearing housing in the radial direction than a site where the water-cooling jacket is formed.

Assignees

• Ishii Mikito
• Ihi Corp

Inventors

• Ishii Mikito

Classifications

• F05D2230/642

  using maintaining alignment while permitting differential dilatation · CPC title

• F02B37/24

  by using pumps or turbines with adjustable guide vanes · CPC title

• F05D2220/40

  in turbochargers · CPC title

• F05D2260/38

  by a spring, i.e. spring loaded or biased towards a certain position · CPC title

• F01D25/125

  of bearings · CPC title