Fluid machine

Patent metadata

Field	Value
Publication number	US-9964107-B2
Application number	US-201314761696-A
Country	US
Kind code	B2
Filing date	Jun 24, 2013
Priority date	Jun 24, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A fluid machine includes a piston, a valve seat plate, a valve, and a valve retainer that reduces an opening amount of the valve. One end of the valve retainer is fixed with a fastener together with the valve to the valve seat plate. The fastener spans through the one end of the valve retainer and the valve to thereby fasten the one end of the valve retainer and the valve to the valve seat plate. A second end of the valve retainer that is opposite to the one end does not contact the valve seat plate.

First claim

The invention claimed is:

1. A fluid machine, comprising:
a piston reciprocating in a cylinder;
a valve seat plate provided in the cylinder;
a valve for opening and closing a port portion of the valve seat plate in accordance with reciprocation of the piston, one end of the valve being fixed to the valve seat plate; and
a valve retainer for reducing an opening amount of the valve, one end of the valve retainer being fixed with a fastener together with the valve to the valve seat plate, wherein
the fastener spans through the one end of the valve retainer and the valve to thereby fasten the one end of the valve retainer and the valve to the valve seat plate, and
a second end of the valve retainer that is opposite to the one end does not contact the valve seat plate,
wherein a surface of the valve retainer that faces the port portion, is inclined relative to the valve seat plate so that the surface is closer to the port portion at the second end than at a part farthest from the valve seat plate which is between the port portion and the fixed end.

2. The fluid machine according to claim 1 , wherein
a contact surface of the valve retainer to be brought into contact with the valve is provided between the part of the valve retainer farthest from the valve seat plate, and the fixed end.

3. The fluid machine according to claim 1 , wherein
the surface facing the valve seat plate between the part of the valve retainer, the part being farthest from the valve seat plate, and the fixed end has a shape obtained by connecting at least two plane surfaces having different inclinations.

4. The fluid machine according to claim 3 , wherein
an inclination on a side opposite to the fixed end side is set to be larger than the inclination on the fixed end side.

5. The fluid machine according to claim 1 , wherein
the surface facing the valve seat plate between the part of the valve retainer farthest from the valve seat plate, and the fixed end is provided as a curved surface protruding toward the valve seat plate.

6. The fluid machine according to claim 5 , wherein
a curvature of the curved surface varies.

7. The fluid machine according to claim 1 , wherein
the surface facing the valve seat plate between the part of the valve retainer farthest from the valve seat plate, and the fixed end has a shape obtained by connecting a plane surface and a curved surface.

8. The fluid machine according to claim 1 , wherein
the valve retainer is a valve fixing portion integrally provided with the cylinder head.

9. The fluid machine according to claim 1 , wherein the surface facing the valve seat plate between the part of the valve retainer farthest from the valve seat plate, and the second end has a shape obtained by connecting a plane surface and a curved surface.

10. The fluid machine according to claim 1 , wherein the valve and the valve retainer are longitudinally coextensive.

11. A fluid machine, comprising:
a piston reciprocating in a cylinder;
a valve seat plate provided in the cylinder;
a valve for opening and closing above a port portion of the valve seat plate in accordance with reciprocation of the piston, one end of the valve being fixed to the valve seat plate; and
a valve retainer for reducing an opening amount of the valve, one end of the valve retainer being fixed with a fastener together with the valve to the valve seat plate,
wherein the valve retainer has a bending portion between the port portion and the fixed end and, is inclined toward an open end side, the open end side being separated from the valve and the valve seat plate by a distance that is larger than a thickness of the valve,
wherein the bending portion is a part farthest from the valve seat plate which is between the port portion and the fixed end, and
wherein a surface of the valve retainer that faces the valve seat plate is inclined relative to the valve seat plate so that the surface is closer to the port portion at the second end than at the bending portion.

12. The fluid machine according to claim 11 , wherein
a contact surface to be brought into contact with the valve is provided between the bending portion of the valve retainer and the fixed end.

13. The fluid machine according to claim 11 , wherein
the surface facing the valve seat plate between the bending portion of the valve retainer and the fixed end has a shape obtained by connecting at least two plane surfaces having different inclinations.

14. The fluid machine according to claim 13 , wherein
the inclination on a side close to the bending portion is set to be larger than the inclination on the fixed end side.

15. The fluid machine according to claim 11 , wherein
the surface facing the valve seat plate between the bending portion of the valve retainer and the fixed end is provided as a curved surface protruding toward the valve seat plate.

16. The fluid machine according to claim 15 , wherein
a curvature of the curved surface varies.

17. The fluid machine according to claim 11 , wherein
the surface facing the valve seat plate between the bending portion and the fixed end has a shape obtained by connecting a plane surface and a curved surface.

18. The fluid machine according to claim 11 , wherein
the valve retainer is a valve fixing portion integrally provided with the cylinder head.

19. The fluid machine according to claim 11 , wherein
the surface facing the valve seat plate between the bending portion of the valve retainer and the open end has a shape obtained by connecting a plane surface and a curved surface.

Assignees

• Hitachi Industry Equipment Systems Co Ltd

Inventors

• Sadakata Kosuke
• Tashiro Koichi
• Suefuji Kazutaka

Classifications

• F04B39/1073 Primary

  the members being reed valves · CPC title

• F04B39/1066

  Valve plates · CPC title

• F04B53/1047

  the valve being formed by one or more flexible elements · CPC title

• F04B53/1085 Primary

  having means for limiting the opening height (F04B53/101 and F04B53/1035 take precedence) · CPC title

• F04B39/0027

  Pulsation and noise damping means · CPC title