Valve device

Patent metadata

Field	Value
Publication number	US-9995406-B2
Application number	US-201514876580-A
Country	US
Kind code	B2
Filing date	Oct 6, 2015
Priority date	Oct 8, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A valve device includes a body in which a gas flow passage is provided; and a check valve provided in the gas flow passage, the check valve including a poppet and a valve seat. The poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft. The at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens.

First claim

What is claimed is:

1. A valve device configured to be fitted to a gas tank in which high-pressure gas is stored, the valve device comprising:
a body in which a gas flow passage and a fitting hole are provided, the fitting hole provided on an outer surface of the body, and the gas flow passage providing communication between an inside and an outside of the gas tank through the fitting hole;
a check valve provided in the gas flow passage, the check valve including a poppet that suppresses discharge of the gas inside the gas tank to an outside of the body, and a valve seat with which the poppet makes contact and from which the poppet separates,
a joint at least partially located in the fitting hole and configured to connect a pipe to the gas flow passage; and
a positioning member configured with a communication hole that communicates with the gas flow passage, the positioning member being arranged between the joint and the gas flow passage such that the positioning member is located in the fitting hole, the positioning member configured to set a position of the valve seat even in a state where the joint is not fitted in the fitting hole;

wherein:
the poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft; and
the at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens.

2. The valve device according to claim 1 , wherein
an intersection angle of a central axis line of each of the at least one side hole with respect to the central axis line of the poppet is 20°, or 60°, or between 20° and 60°.

3. The valve device according to claim 1 , wherein:
the gas flow passage includes an increased diameter portion in which the valve seat is fitted, and a valve accommodation portion in which the poppet is accommodated;
an inside diameter of the valve accommodation portion is smaller than an inside diameter of the increased diameter portion; and
the positioning member sets the position of the valve seat by pressing the valve seat to a connecting surface that connects an inner peripheral surface of the increased diameter portion and an inner peripheral surface of the valve accommodation portion.

Assignees

• Jtekt Corp
• Toyota Motor Co Ltd

Inventors

• Kuroyanagi Munetoshi
• Nakamura Akio
• Haneda Kazuo
• Inagi Shusuke
• Yamashita Akira
• Kondo Masaaki

Classifications

• F17C2270/0184

  Fuel cells · CPC title

• F17C2270/0168

  by vehicles · CPC title

• F17C2223/036

  Very high pressure (>80 bar) · CPC title

• F17C2223/0123

  gaseous, e.g. CNG, GNC · CPC title

• F17C2205/0394

  in direct contact with the pressure vessel · CPC title