Valves for a diaphragm pump

• US 7,040,876 B2
• Filed: 12/15/2004
• Issued: 05/09/2006
• Est. Priority Date: 11/06/2001
• Status: Expired due to Term

• Current Assignee: OKEN Seiko Company Limited (Mabuchi Motor Company Limited)
• Original Assignee: OKEN Seiko Company Limited (Mabuchi Motor Company Limited)
• Inventors: Onishi, Koji, Fukami, Tadashi, Kakizawa, Goro, Nakatsugi, Koichi
• Primary Examiner(s): FREAY, CHARLES GRANT
• Application Number:
  US11/011,279
• Publication Number:
  US 20050169780A1
• Time in Patent Office: 510 Days
• Field of Search: 417/413.1, 417/560, 417/566, 417/571, 417/531
• US Class Current: 417/413.1
• CPC Class Codes: F04B 43/026 each plate-like pumping flexible member working in its own pumping chamber
• CPC Class Codes: Y10T 137/7891 Flap or reed

Abstract

A pump which has a diaphragm main body integrally connected at a planar portion to a diaphragm portion forming a pump chamber and performs a pumping action by reciprocating a driving portion disposed integrally with the diaphragm portion; the pump being configured compact by disposing a suction valve at the planar portion of the diaphragm main body and further using a planar discharge valve.

Claims

1. Valves for a diaphragm pump comprising:

at least a diaphragm portion which forms a pump chamber;

a diaphragm main body which has a planar portion integrally connected to said diaphragm portion;

a suction valve which is formed at the planar portion of said diaphragm main body located between said diaphragm portions or in the vicinity of said diaphragm portion;

a discharge valve which has a V-shaped or U-shaped section; and

a valve housing which has a concave portion having a V-shaped or U-shaped section and an air vent connecting a side surface of said concave portion to said diaphragm portion,

wherein said discharge valve is disposed in close contact with the concave portion of said valve housing so as to be capable of opening and closing said air vent, and

wherein said diaphragm portion has a driving portion and performs a pumping action by reciprocating said driving portion.

2. The valves for a diaphragm pump according to claim 1, wherein said discharge valve has a fixed portion, wherein said valve housing has a mounting hole, and wherein said discharge valve is fixed by pressing the fixed portion of said discharge valve into the mounting hole of said valve housing.

3. The valves for a diaphragm pump according to claim 1, further comprising an air collecting body which has a discharge port and a valve clamp, wherein said discharge valve is fixed by said valve clamp when said air collecting body is attached to said valve housing.

9. The valves for a diaphragm pump according to claim 3 or claim 8,

wherein the discharge valve having the V-shaped or U-shaped section has a fixed portion at a center thereof, and

wherein the valve clamp of the air collecting body is configured fix the discharge valve by clamping the fixed portion.

10. The valves for a diaphragm pump according to claim 3,

further comprising an air hole formed in the valve clamp, the air hole providing communication between the discharge valve and the discharge port.

11. The valves for a diaphragm pump according to claim 9,

further comprising an air hole formed in the valve clamp, the air hole providing communication between the discharge valve and the discharge port.

4. Valves for a diaphragm pump comprising:

a diaphragm main body which is connected definitely at a planar portion to at least a diaphragm portion forming a pump chamber;

a cylinder member having a cylinder into which said diaphragm portion is to be inserted and a suction port;

a suction valve having a portion which opens and closes the suction port at a location of the planar portion of said diaphragm main body; and

a discharge valve,

wherein said suction valve has a hole at a location different from that of said suction port,

wherein said diaphragm portion has a driving portion and performs a pumping action by moving up and down said driving portion.

5. The valves for a diaphragm pump according to claim 4, wherein said suction valve has a valve portion and an opening at a portion surrounding the valve portion.

6. The valves for a diaphragm pump according to claim 9 or 5, wherein said discharge valve has a form of a planar plate.

7. The valves for a diaphragm pump according to claim 9 or 5, wherein said discharge valve has a U-shaped section.

8. The valves for a diaphragm pump according to claim 4,

wherein the discharge valve defines a V-shaped or U-shaped section,

wherein the valve housing defines a concave portion defining a V-shaped or U-shaped section and an air vent which connects a side surface of the concave portion to the pump chamber formed by the diaphragm portion, and

wherein the discharge valve is disposed in close contact with the concave portion so as to be capable of opening and closing the air vent.