Pump sleeve for a charge and scavenge pump of an integrated drive generator

Patent metadata

Field	Value
Publication number	US-10788035-B2
Application number	US-201815871422-A
Country	US
Kind code	B2
Filing date	Jan 15, 2018
Priority date	Jan 15, 2018
Publication date	Sep 29, 2020
Grant date	Sep 29, 2020

Abstract

A pump sleeve for an integrated drive generator has a pump sleeve body extending between a first end and a second end. The first end is at a location adjacent a radially enlarged end plate. The body extends to the second end with a generally cylindrical body portion having an inner bore diameter defining a first distance. The body extends between the first and second ends for a second distance. A ratio of the first distance to the second distance is between 0.15 and 0.30. An integrated drive generator and a method are also disclosed.

First claim

The invention claimed is:

1. A pump sleeve for an integrated drive generator comprising:
a pump sleeve body extending between a first end and a second end, said first end being at a location adjacent a radially enlarged end pate, and said body extending to said second end with a generally cylindrical body portion having an inner bore with a diameter defining a first distance, and said body extending between said first and second ends for a second distance and a ratio of said first distance to said second distance being between 0.15 and 0.30;
wherein said body having two pairs of circumferentially spaced windows to provide fluid ports to two distinct pumps, said windows to provide fluid ports to one of said pumps extending axially for a third distance and said windows to provide fluid ports to the second of said pumps extending axially for a fourth distance, and a ratio of said third distance to said fourth distance being between 0.70 and 0.85, wherein each of said pairs of window having an inlet port and an outlet port, and said inlet port extending circumferentially for a first angle that is between 99 and 119 degrees ad said outlet port extending for a second angle that is between 90 and 110 degrees; and
wherein said first angle and said second angle are different angles.

2. The pump sleeve as set forth in claim 1 , wherein the pumps include a charge pump and an scavenge pump.

3. The pump sleeve as set forth in claim 1 , wherein said first angle is greater than said second angle.

4. The pump sleeve as set forth in claim 3 , wherein said first angle is 109 degrees and said second angle is 100 degrees.

5. The pump sleeve as set forth in claim 4 , wherein said first distance is 1.375 inches and said second distance is 6.119 inches.

6. The pump sleeve as set forth in claim 5 , wherein said third distance is 0.832 inch and said fourth distance is 1.065 inches.

7. The pump sleeve as set forth in claim 1 , wherein said first distance is 1.375 inches, said second distance is 6.119 inches, said third distance is 0.832 inch and said fourth distance is 1.065 inches.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Hochstetler Derek R
• Martin Ted A
• Johnson Duane C
• Lemmers Jr Glenn C

Classifications

• F01C21/10 Primary

  Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M) · CPC title

• F04C2240/30

  Casings or housings · CPC title

• F16H47/04

  the mechanical gearing being of the type with members having orbital motion · CPC title

• F04B41/06

  Combinations of two or more pumps · CPC title

• F04B53/16 Primary

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title