ACTUATING MECHANISM OF A GAS VALVE UNIT

• US 20120132836A1
• Filed: 07/15/2010
• Published: 05/31/2012
• Est. Priority Date: 07/24/2009
• Status: Active Grant

• Current Assignee: BSH Hausgeraete GmbH (Robert Bosch GmbH)
• Original Assignee: BSH Bosch und Siemens Hausgerã¤Te GmbH (Robert Bosch GmbH)
• Inventors: Cadeau, Christophe, Clauss, Stéphane, Eisenberg, Alexander, Naumann, Jörn
• Granted Patent: US 8,667,988 B2
• Time in Patent Office: Days
• US Class Current: 251/65
• CPC Class Codes: F23N 1/007 using mechanical means F23N1/04 - F23N1/10 take precedence
• CPC Class Codes: F23N 2235/16 variable flow or proportional valves
• CPC Class Codes: F23N 2235/18 Groups of two or more valves
• CPC Class Codes: F23N 2235/22 cooperating with magnets
• CPC Class Codes: F23N 2235/24 Valve details
• CPC Class Codes: F23N 2241/08 Household apparatus
• CPC Class Codes: Y10T 137/86919 Sequentially closing and opening alternately seating flow controllers
• CPC Class Codes: Y10T 137/87056 With selective motion for plural valve actuator
• CPC Class Codes: Y10T 137/8708 Rotation of actuator arm about its pivot and its axis

Abstract

A gas valve unit for adjusting a volumetric gas flow supplied to a gas burner of a gas appliance, in particular a gas cooking appliance, includes at least two open/close valves which can be actuated by moving at least one magnetically active body, in particular a permanent magnet, relative to the open/close valves. For actuating an open/close valve, a position of the magnetically active body, which is preferably implemented in the form of a permanent magnet, can be varied relative to the shut-off body of the open/close valve.

Claims

1-15. -15. (canceled)

16. A gas valve unit for adjusting a volumetric gas flow supplied to a gas burner of a gas appliance, said gas valve unit comprising:

at least two open/close valves, and

at least one magnetically active body,

wherein the at least two open/close valves are actuated by moving the at least one magnetically active body relative to the open/close valves.

17. The gas valve unit of claim 16, wherein the gas appliance is a gas cooking appliance.

18. The gas valve unit of claim 16, wherein the magnetically active body comprises a permanent magnet.

19. The gas valve unit of claim 16, wherein each of the at least two open/close valves has a movable shut-off body which bears against a valve seat when the open/close valve is closed, thereby sealing an orifice in the valve seat.

20. The gas valve unit of claim 19, wherein the valve seat is implemented as a substantially flat surface.

21. The gas valve unit of claim 19, wherein the valve seats of the at least two open/close valves are formed by a common component.

22. The gas valve unit of claim 21, wherein the common component is formed by a valve sealing plate.

23. The gas valve unit of claim 19, wherein the shut-off body is pressed onto the valve seat by a spring when the open/close valve is closed.

24. The gas valve unit of claim 19, wherein the open/close valve is opened by lifting the shut-off body off the valve seat through application of a force from the magnetically active body.

25. The gas valve unit of claim 19, wherein each shut-off body is formed by a substantially cylindrical plunger.

26. The gas valve unit of claim 19, wherein the gas valve unit comprises a valve body, and wherein each shut-off body is guided in the valve body for movement in an axial direction.

27. The gas valve unit of claim 16, wherein the gas valve unit comprises at least four open/close valves.

28. The gas valve unit of claim 19, wherein the shut-off bodies of individual open/close valves are arranged on a circular path around an axis of the gas valve unit and are movable parallel to said axis.

29. The gas valve unit of claim 28, wherein the axis is formed by a switching shaft of the gas valve unit.

30. The gas valve unit of claim 19, wherein the open/close valve is actuated by varying a position of the magnetically active body in relation to the shut-off body.

31. The gas valve unit of claim 16, wherein depending on a position of the at least one magnetically active body, either all of the at least two open/close valves are closed, or only one of the at least two open/close valves is open, or precisely two open/close valves are open.

32. The gas valve unit of claim 28, wherein the at least one magnetically active body is arranged on a rotatable component of the gas valve unit that is rotatable about the axis of the gas valve unit.

33. The gas valve unit of claim 32, wherein the rotatable component is formed by a driver.

34. The gas valve unit of claim 32, wherein the rotatable component can be rotated about the axis by hand by an operator.

35. The gas valve unit of claim 32, further comprising an electrical actuating element for rotating the rotatable component about the axis.