Fuel gas injection device and fuel cell system

Patent metadata

Field	Value
Publication number	US-10950880-B2
Application number	US-201916364343-A
Country	US
Kind code	B2
Filing date	Mar 26, 2019
Priority date	Mar 28, 2018
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A fuel gas injection device of a fuel cell system includes an injector device and an ejector device. Mount portions of the injector device each include a mount body joined to a distal-side support portion, a screw member joining the mount body and an ejector body to each other in a state in which the screw member extends in an operating direction of a plunger, and a mount rubber member disposed on an outer circumferential side of a shaft portion of the screw member.

First claim

What is claimed is:

1. A fuel gas injection device comprising an injector device that includes an injector for injecting a fuel gas, and an ejector device that includes an ejector body attached to an external support member and to which the fuel gas injected from the injector is guided, the fuel gas of the ejector device being supplied to a fuel cell,
the injector device comprising:
an injector support portion supporting the injector;
a rubber member disposed between the injector and the injector support portion; and
a mount portion for attaching the injector support portion to the ejector body,
the mount portion comprising:
a mount body joined to the injector support portion;
a fixing member for joining the mount body and the ejector body to each other, with the fixing member extending in an operating direction of a plunger of the injector; and
a mount rubber member disposed on an outer circumferential side of a shaft portion of the fixing member,
wherein the injector support portion includes:
a distal-side support portion supporting a distal portion of the injector; and
a proximal-side support portion supporting a proximal portion of the injector, and the rubber member includes:
a distal-side rubber member held between the injector and the distal-side support portion from the operating direction of the plunger; and
a proximal-side rubber member held between the injector and the proximal-side support portion from the operating direction of the plunger.

2. The fuel gas injection device according to claim 1 , wherein the mount rubber member has a hardness that is lower than a hardness of the distal-side rubber member and a hardness of the proximal-side rubber member.

3. The fuel gas injection device according to claim 1 , wherein the injector device includes a plurality of injectors disposed in parallel,
the distal-side rubber member extends so as to surround the distal portion of each of the plurality of injectors, and
the proximal-side rubber member extends so as to surround the proximal portion of each of the plurality of injectors.

4. The fuel gas injection device according to claim 1 , wherein the mount portion comprises a plurality of mount portions that are disposed in a point symmetric manner about a center line of the injector device.

5. The fuel gas injection device according to claim 1 ,
wherein the ejector body has a hole portion in which a part of the distal-side support portion is inserted, and
a rubber seal member in contact with an inner surface forming the hole portion is attached to the part of the distal-side support portion that is inserted in the hole portion.

6. The fuel gas injection device according to claim 1 , wherein the injector support portion comprises a coupling member coupled to the distal-side support portion and the proximal-side support portion such that a tightening force along the operating direction of the plunger acts to the distal-side rubber member and the proximal-side rubber member.

7. The fuel gas injection device according to claim 6 , wherein, with the tightening force acting, a thickness of the distal-side rubber member along the operating direction of the plunger is smaller than a thickness of the proximal-side rubber member along the operating direction of the plunger.

8. The fuel gas injection device according to claim 1 , wherein the mount rubber member is formed in an annular shape.

9. A fuel gas injection device comprising an injector device that includes an injector for injecting a fuel gas, and an ejector device that includes an ejector body attached to an external support member and to which the fuel gas injected from the injector is guided, the fuel gas of the ejector device being supplied to a fuel cell,
the injector device comprising:
an injector support portion supporting the injector;
a rubber member disposed between the injector and the injector support portion; and
a mount portion for attaching the injector support portion to the ejector body,
the mount portion comprising:
a mount body joined to the injector support portion;
a fixing member for joining the mount body and the ejector body to each other, with the fixing member extending in an operating direction of a plunger of the injector; and
a mount rubber member disposed on an outer circumferential side of a shaft portion of the fixing member,
wherein the mount portion includes:
an annular inside member fixed to the ejector body by the fixing member; and
an annular outside member bonded to the mount body while being disposed on an outer circumferential side of the annular inside member, and
wherein the mount rubber member abuts on an outer surface of the annular inside member and an inner surface of the annular outside member.

10. A fuel cell system comprising a fuel cell and a fuel gas injection device,
the fuel gas injection device comprising an injector device that includes an injector for injecting a fuel gas, and an ejector device that includes an ejector body attached to an external support member and to which the fuel gas injected from the injector is guided, the fuel gas of the ejector device being supplied to the fuel cell,
the injector device comprising:
an injector support portion supporting the injector;
a rubber member disposed between the injector and the injector support portion; and
a mount portion for attaching the injector support portion to the ejector body, the mount portion comprising:
a mount body joined to the injector support portion;
a fixing member for joining the mount body and the ejector body to each other, with the fixing member extending in an operating direction of a plunger of the injector; and
a mount rubber member disposed on an outer circumferential side of a shaft portion of the fixing member,
wherein the injector support portion includes:
a distal-side support portion supporting a distal portion of the injector; and
a proximal-side support portion supporting a proximal portion of the injector, and
the rubber member includes:
a distal-side rubber member held between the injector and the distal-side support portion from the operating direction of the plunger; and
a proximal-side rubber member held between the injector and the proximal-side support portion from the operating direction of the plunger.

11. The fuel cell system according to claim 10 , wherein the mount rubber member has a hardness that is lower than a hardness of the distal-side rubber member and a hardness of the proximal-side rubber member.

12. The fuel cell system according to claim 10 , wherein the injector device includes a plurality of injectors disposed in parallel,
the distal-side rubber member extends so as to surround the distal portion of each of the plurality of injectors, and
the proximal-side rubber member extends so as to surround the proximal portion of each of the plurality of injectors.

13. The fuel cell system according to claim 10 ,
wherein the mount portion includes:
an annular inside member fixed to the ejector body by the fixing member; and
an annular outside member bonded to the mount body while being disposed on an outer circumferential side of the annular inside member, and
wherein the mount rubber member abuts on an outer surface of the annular inside member and an inner surface of the annular outside member.

14. The fuel cell system according to claim 10 , wherein the mount portion comprises a plurality of mount portions that are disposed in a point symmetric manner about a center line of the injector device.

15. The fuel cell system according to claim 10 , wherein the ejector body has a hole portion in whi

Assignees

• Honda Motor Co Ltd

Inventors

• Hatakeda Tomohiko
• Terasawa Yuji
• Mizumoto Kazuya

Classifications

• H01M8/04753

  of fuel cell reactants · CPC title

• H01M8/04074

  Heat exchange unit structures specially adapted for fuel cell · CPC title

• Y02E60/50

  Fuel cells · CPC title

• H01M2250/20

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

• F04F5/36

  characterised by using specific inducing fluid · CPC title