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Single-stage nozzle flapper torque motor and electrohydraulic valve including flexible hermetic seal

A technology of torque motors and seals, applied in the direction of servo motor components, electric components, electrical components, etc., can solve problems such as calibration changes and leakage

Inactive Publication Date: 2013-03-06
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these seals are generally safe, reliable, and durable, these seals can have certain disadvantages
For example, currently known constructions of seals and torque motors can result in significant set-up times during manufacturing
Additionally, currently known seals may be prone to calibration variations and leakage with use

Method used

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  • Single-stage nozzle flapper torque motor and electrohydraulic valve including flexible hermetic seal
  • Single-stage nozzle flapper torque motor and electrohydraulic valve including flexible hermetic seal
  • Single-stage nozzle flapper torque motor and electrohydraulic valve including flexible hermetic seal

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Embodiment Construction

[0018] The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. As used herein, the word "exemplary" means "serving as an example, instance, or illustration." Thus, any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. All of the embodiments described herein are exemplary embodiments provided to enable persons skilled in the art to make or use the claimed invention and not to limit the scope of the invention as defined by the claims. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary, or the following detailed description.

[0019] In this application, relative terms such as first and second etc. may be used alone to classify one entity or another without necessarily requiring or implying any actual su...

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Abstract

The invention relates to a single-stage nozzle flapper torque motor and an electrohydraulic valve including a flexible hermetic seal. The torque motor includes an armature support, a flapper, and a flexible metallic seal. The armature support comprises a base, an armature-flapper support, and a plurality of springs. The armature is coupled to the armature-flapper support. The flapper is coupled to the flapper support and to the armature, and extends through the first and third flapper openings, and extends at least partially into the second flapper opening. The flexible metallic seal surrounds a portion of the flapper, and has a first end, a second end, and a plurality of convolutions between the first end and the second end. The first end is disposed between and hermetically connected to the flapper and the armature, and the second end is disposed within the first opening and hermetically connected to the base.

Description

technical field [0001] The present invention relates generally to a single-stage electrohydraulic valve and torque motor (motor) for use therein, and more particularly to a torque motor including a flexible hermetic seal. Background technique [0002] Single-stage electrohydraulic valves (EHVs) can be used in countless systems and environments. A typical system and environment is the fuel control system onboard a jet aircraft. Regardless of the specific end-use system and environment, single-stage EHVs typically include a pair of nozzles connected between a source of pressurized hydraulic fluid and a hydraulically controlled load. Pressurized hydraulic fluid flows through each nozzle, and thus flow to hydraulically controlled loads can be controlled via the torque motor. [0003] A typical torque motor used in conjunction with a single-stage EHV includes multiple coils, armatures, and baffles. The coil is controllably energizable to control the rotational position of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/10F16K31/04
CPCH01F7/14H01F7/128F15B13/0438H02K26/00
Inventor D·德鲁汉D·卡特
Owner HONEYWELL INT INC
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