Fan and compressor housing

Patent metadata

Field	Value
Publication number	US-10113558-B2
Application number	US-201614989191-A
Country	US
Kind code	B2
Filing date	Jan 6, 2016
Priority date	Jan 6, 2016
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A fan housing for an air cycle machine includes a fan exit flow passage and a ring disposed around a center axis of the fan housing and disposed around the fan exit flow passage. The ring includes a first end disposed axially opposite a second end and a guide surface facing radially inward relative the center axis and formed between the first end and the second end. The ring also includes a shelf disposed radially inward from the guide surface. The shelf includes a stop surface extending radially and disposed axially between the second end and the guide surface. The shelf also includes a shelf surface facing radially outward relative the center axis and extending axially between the first end and the stop surface.

First claim

The invention claimed is:

1. A fan housing for an air cycle machine, the fan housing comprising:
an outer ring disposed around a center axis of the fan housing;
at least one strut extending radially inward from the outer ring; and
an inner ring disposed radially inward from the outer ring and connected to the at least one strut opposite the outer ring; wherein the inner ring further comprises:
a first end disposed axially opposite a second end;
a guide surface facing radially inward relative the center axis and formed between the first end and the second end;
a shelf disposed radially inward from the guide surface, wherein the shelf comprises:
a stop surface extending radially and disposed axially between the second end and the guide surface; and
a shelf surface facing radially outward relative the center axis and extending axially between the first end and the stop surface; and

a recess formed in the first end, wherein the recess extends axially between the first end and the guide surface, and wherein the recess extends radially inward to the guide surface.

2. The fan housing of claim 1 , wherein the inner ring further comprises:
a mounting surface disposed at the first end, wherein the mounting surface extends radially outward from the recess.

3. The fan housing of claim 2 , wherein the stop surface is spaced an axial distance D 1 from the first end, the recess extends an axial distance D 2 from the first end, and a ratio of the axial distance D 1 to the axial distance D 2 is 19.227 to 21.322.

4. The fan housing of claim 2 , wherein the stop surface is spaced an axial distance D 1 from the first end, the recess comprises an outer diameter D 3 relative the center axis of the fan housing, and wherein a ratio of the axial distance D 1 to the outer diameter D 3 of the recess is 0.288 to 0.289.

5. The fan housing of claim 2 , wherein the stop surface is spaced an axial distance D 1 from the first end, the guide surface comprises a diameter D 4 relative the center axis of the fan housing, and wherein a ratio of the axial distance D 1 to the diameter D 4 of the guide surface is 0.302 to 0.303.

6. The fan housing of claim 2 , wherein the stop surface is spaced an axial distance D 1 from the first end, the shelf surface comprises a diameter D 5 relative the center axis of the fan housing, and wherein a ratio of the axial distance D 1 to the diameter D 5 of the shelf surface is 0.329 to 0.330.

7. The fan housing of claim 2 , wherein the recess extends an axial distance D 2 from the first end, the recess comprises an outer diameter D 3 relative the center axis of the fan housing, and wherein a ratio of the axial distance D 2 to the outer diameter D 3 of the recess is 0.013 to 0.015.

8. The fan housing of claim 2 , wherein the recess comprises an outer diameter D 3 relative the center axis of the fan housing, the guide surface comprises a diameter D 4 relative the center axis of the fan housing, and wherein a ratio of the outer diameter D 3 of the recess to the diameter D 4 of the guide surface is approximately 1.050.

9. The fan housing of claim 2 , wherein the recess comprises an outer diameter D 3 relative the center axis of the fan housing, the shelf surface comprises a diameter D 5 relative the center axis of the fan housing, and wherein a ratio of the outer diameter D 3 of the recess to the diameter D 5 of the shelf surface is 1.142 to 1.143.

10. The fan housing of claim 2 , wherein the guide surface comprises a diameter D 4 relative the center axis of the fan housing, the shelf surface comprises a diameter D 5 relative the center axis of the fan housing, and wherein a ratio of the diameter D 4 of the guide surface to the diameter D 5 of the shelf surface is 1.088 to 1.089.

11. A fan housing for an air cycle machine, the fan housing comprising:
a fan exit flow passage; and
a ring disposed around a center axis of the fan housing and disposed around the fan exit flow passage; wherein the ring comprises:
a first end disposed axially opposite a second end;
a guide surface facing radially inward relative the center axis and formed between the first end and the second end;
a shelf disposed radially inward from the guide surface, wherein the shelf comprises:
a stop surface extending radially and disposed axially between the second end and the guide surface; and
a shelf surface facing radially outward relative the center axis and extending axially between the first end and the stop surface;

a recess formed in the first end, wherein the recess extends axially between the first end and the guide surface, and wherein the recess extends radially inward to the guide surface; and
a mounting surface disposed at the first end, wherein the mounting surface extends radially outward from the recess.

12. The fan housing of claim 11 , wherein the fan housing further comprising:
a containment ring comprising:
a tubular body extending axially between a first end and a second end of the containment ring;
a flange extending radially outward from the tubular body at the first end of the containment ring,
wherein the second end of the tubular body extends onto the shelf surface of the shelf, and the flange extends into the recess.

13. The fan housing of claim 12 , wherein the fan housing further comprising:
a shroud comprising:
a tubular body extending between a first end and a second end of the shroud;
a mounting flange extending radially outward from the tubular body of the shroud at the first end of the shroud,
wherein the second end of the tubular body of the shroud is disposed radially inward from the tubular body of the containment ring and radially inward of the shelf surface, and
wherein the mounting flange is disposed against the mounting surface of the ring and covers the recess and the flange of the containment ring.

Assignees

• Hamilton Sundstrand Corp
• Hamilton Sunstrand Corp

Inventors

• Chrabascz Eric
• Rosen Seth E

Classifications

• F04D29/644

  especially adapted for elastic fluid pumps · CPC title

• F04D29/522 Primary

  especially adapted for elastic fluid pumps · CPC title

• F04D25/024

  the driving means being assisted by a power recovery turbine · CPC title

• F04D29/4206 Primary

  especially adapted for elastic fluid pumps · CPC title

• B64D2013/0688

  with means for recirculating cabin air · CPC title