Valve device

Patent metadata

Field	Value
Publication number	US-9929417-B2
Application number	US-201514878580-A
Country	US
Kind code	B2
Filing date	Oct 8, 2015
Priority date	Oct 10, 2014
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A valve device includes a body, a solenoid valve accommodated in an accommodation hole of the body, and a joint member fixed to the body. The solenoid valve includes: a sleeve having a tubular shape and fitted in the accommodation hole, and including an introduction passage and a delivery passage; and a valve element configured to open and close the passages. A U-seal is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole. The body has an attachment hole that is located downstream of the delivery passage of the sleeve and opens on an outer surface of the body. The joint member including a backflow reduction valve is fixed to the attachment hole.

First claim

The invention claimed is:

1. A valve device comprising:
a body having a gas passage and an accommodation hole communicated with the gas passage;
a solenoid valve accommodated in the accommodation hole; and
a joint member detachably fixed to the body, wherein
the solenoid valve includes:
a sleeve having a tubular shape and fitted in the accommodation hole, the sleeve including a passage communicated with the gas passage,
an opening-closing portion configured to open and close the passage; and
a driving portion configured to drive the opening-closing portion to open and close the passage,

a seal member is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole,
the body has a joint connection opening that is located downstream of the passage of the sleeve, the joint connection opening being opened on an outer surface of the body and being configured to receive the joint member,
the joint member is detachably fixed to the joint connection opening,
the joint member has a communication passage connected to the passage of the sleeve,
the joint member includes a backflow reduction valve configured to hinder movement of gas in the communication passage toward the sleeve,
a valve seat of the backflow reduction valve is held in air-tight contact with the outer surface of the body and the joint member, and
the valve seat of the backflow reduction valve air-tightly seals a space between the body and the joint member.

2. The valve device according to claim 1 , wherein
the valve seat is disposed in a valve seat attachment portion of a valve accommodation hole provided at an upstream end of the communication passage of the joint member, and
the backflow reduction valve includes:
a valve element accommodated in the valve accommodation hole, the valve element being configured to be brought into contact with or moved away from the valve seat; and
an urging member configured to urge the valve element toward an upstream side, the urging member being configured to cause the valve element to come into contact with the valve seat when a counter pressure is generated on a downstream side.

3. The valve device according to claim 1 , wherein the accommodation hole is coaxially aligned with a valve accommodation hole that accommodates the backflow reduction valve.

4. The valve device according to claim 1 , wherein the solenoid valve is coaxially aligned with the backflow reduction valve.

Assignees

• Jtekt Corp
• Toyota Motor Co Ltd

Inventors

• Nakamura Akio
• Suzuki Takuya
• Inagi Shusuke
• Yamashita Akira
• Kondo Masaaki

Classifications

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• F16K39/024

  using an auxiliary valve on the main valve · CPC title

• F16K31/0693

  Pressure equilibration of the armature · CPC title

• F16K31/0655

  Lift valves · CPC title

• F16K15/025

  the valve being loaded by a spring (F16K15/03 - F16K15/12 take precedence) · CPC title