Oil tank comprising an oil level control device

Patent metadata

Field	Value
Publication number	US-10683774-B2
Application number	US-201715822812-A
Country	US
Kind code	B2
Filing date	Nov 27, 2017
Priority date	Nov 28, 2016
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

An oil tank for a turbine engine comprising a closed enclosure having the shape of an arc of circle adapted to receive oil, with the enclosure having a lower portion and an upper portion at a distance from each other, and an oil level control device in the enclosure, wherein the oil level control device comprises a first sensor positioned in the lower portion of the enclosure so as to control the oil level, and a second sensor separate from the first sensor and positioned in the upper portion of the enclosure so as to control the oil level.

First claim

The invention claimed is:

1. An oil tank for a turbine engine, the oil tank comprising:
a closed enclosure having the shape of an arc of a circle adapted to receive oil, with the enclosure having a lower portion and an upper portion at a distance from each other; and
an oil level control device in the closed enclosure, wherein the oil level control device comprises:
a first sensor positioned in the lower portion of the enclosure so as to control the oil level, wherein the first sensor includes:
a first magnet;
a first float attached to the first magnet;
a first rail configured to guide the first float; and
a first electromagnetic card that includes first contactors configured to switch between an open position and a closed position based on a position of the first magnet; and

a second sensor separate from the first sensor and positioned in the upper portion of the enclosure so as to control the oil level, wherein the second sensor includes:
a second magnet;
a second float attached to the second magnet;
a second rail configured to guide the second float; and
a second electromagnetic card that includes second contactors configured to switch between an open position and a closed position based on a position of the second magnet.

2. The oil tank of claim 1 , wherein the enclosure comprises a middle portion separating the lower portion from the upper portion, and wherein the first sensor is positioned so as to cover the lower portion and a part of the middle portion, and the second sensor is positioned so as to cover the upper portion and a part of the middle portion.

3. The oil tank of claim 1 , wherein the enclosure comprises a sealing plug enabling at least one of the introduction and the removal of the first sensor.

4. The oil tank of claim 3 , wherein the first sensor is integral with the sealing plug.

5. The oil tank of claim 1 , wherein the first sensor and the second sensor are straight.

6. The oil tank of claim 1 , wherein the upper portion and the lower portion each represent one-third of a total curved length of the enclosure.

7. A turbine engine comprising the oil tank of claim 1 .

8. The oil tank of claim 1 , wherein the first rail and the second rail are straight, and wherein the upper portion of the enclosure and the lower portion of the enclosure are curved.

9. The oil tank of claim 8 , wherein the first rail and the second rail are not parallel.

Assignees

• Safran Aircraft Engines

Inventors

• Chalaud Sébastien Christophe
• Domecq Lise Jeanine Léonie
• Emprin Yves

Classifications

• F01D25/20 Primary

  using lubrication pumps · CPC title

• F05D2250/37

  circumferential · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F16N19/003

  Indicating oil level (measuring liquid level in general G01F) · CPC title

• F01M11/12

  concerning lubricant level · CPC title