Fan and compressor housing

Patent metadata

Field	Value
Publication number	US-2017191497-A1
Application number	US-201614989191-A
Country	US
Kind code	A1
Filing date	Jan 6, 2016
Priority date	Jan 6, 2016
Publication date	Jul 6, 2017
Grant date	—

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

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; and
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.

2 . The fan housing of claim 1 , wherein the inner ring further comprising:
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.

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

4 . The fan housing of claim 3 , wherein the stop surface is spaced an axial distance D1 from the first end, the recess extends an axial distance D2 from the first end, and a ratio of the axial distance D1 to the axial distance D2 is 19.227 to 21.322.

5 . The fan housing of claim 3 , wherein the stop surface is spaced an axial distance D1 from the first end, the recess comprises an outer diameter D3 relative the center axis of the fan housing, and wherein a ratio of the axial distance D1 to the outer diameter D3 of the recess is 0.288 to 0.289.

6 . The fan housing of claim 3 , wherein the stop surface is spaced an axial distance D1 from the first end, the guide surface comprises a diameter D4 relative the center axis of the fan housing, and wherein a ratio of the axial distance D1 to the diameter D4 of the guide surface is 0.302 to 0.303.

7 . The fan housing of claim 3 , wherein the stop surface is spaced an axial distance D1 from the first end, the shelf surface comprises a diameter D5 relative the center axis of the fan housing, and wherein a ratio of the axial distance D1 to the diameter D5 of the shelf surface is 0.329 to 0.330.

8 . The fan housing of claim 3 , wherein the recess extends an axial distance D2 from the first end, the recess comprises an outer diameter D3 relative the center axis of the fan housing, and wherein a ratio of the axial distance D2 to the outer diameter D3 of the recess is 0.013 to 0.015.

9 . The fan housing of claim 3 , wherein the recess comprises an outer diameter D3 relative the center axis of the fan housing, the guide surface comprises a diameter D4 relative the center axis of the fan housing, and wherein a ratio of the outer diameter D3 of the recess to the diameter D4 of the guide surface is approximately 1.050.

10 . The fan housing of claim 3 , wherein the recess comprises an outer diameter D3 relative the center axis of the fan housing, the shelf surface comprises a diameter D5 relative the center axis of the fan housing, and wherein a ratio of the outer diameter D3 of the recess to the diameter D5 of the shelf surface is 1.142 to 1.143.

11 . The fan housing of claim 3 , wherein the guide surface comprises a diameter D4 relative the center axis of the fan housing, the shelf surface comprises a diameter D5 relative the center axis of the fan housing, and wherein a ratio of the diameter D4 of the guide surface to the diameter D5 of the shelf surface is 1.088 to 1.089.

12 . 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; and
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.

13 . The fan housing of claim 12 , wherein the inner ring further comprising:
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.

14 . The fan housing of claim 13 , 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.

15 . The fan housing of claim 14 , 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

Inventors

• Chrabascz Eric
• Rosen Seth E

Classifications

• F04D29/522 Primary

  especially adapted for elastic fluid pumps · CPC title

• B64D2013/0603

  Environmental Control Systems · CPC title

• B64D13/06

  the air being conditioned (pressurising B64D13/02) · CPC title

• F04D29/545

  Ducts · CPC title

• F04D25/024

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