Gas valve unit for a dual circuit burner

Patent metadata

Field	Value
Publication number	US-8960234-B2
Application number	US-201113697054-A
Country	US
Kind code	B2
Filing date	May 10, 2011
Priority date	May 20, 2010
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

A gas valve unit for adjusting a gas volume flow in a dual circuit gas burner of a gas appliance includes a valve body having a gas inlet and two gas outlets; and a control mechanism constructed to adjust the gas volumetric flow supplied to one of the gas outlets in a number of stages and to adjust the gas volumetric flow supplied to other one of the gas outlets in a number of stages.

First claim

The invention claimed is:

1. A gas valve unit for adjusting a gas volume flow in a dual circuit gas burner of a gas appliance, comprising:
a valve body having a gas inlet and two gas outlets;
a control mechanism constructed to adjust the gas volumetric flow supplied to one of the gas outlets in a number of stages and to adjust the gas volumetric flow supplied to the other one of the gas outlets in a number of stages, the control mechanism including at least two first on-off valves and at least two first throttle points to adjust the gas volumetric flow supplied to the one of the gas outlets; and
a first throttle path in which the first throttle points are disposed in series, and a connecting section arranged between each two adjacent first throttle points and linking one of the first on-off valves in an open state to the gas inlet,
wherein the throttle points of the first throttle path—when viewed in a gas flow direction in the first throttle path—have an increasing flow cross-section.

2. The gas valve unit of claim 1 , constructed for setting the gas volumetric flow to the twin-circuit gas burner of a gas cooking appliance.

3. The gas valve of claim 1 , wherein the control mechanism includes second on-off valves to adjust the gas volumetric flow supplied to the other one of the gas outlets.

4. The gas valve of claim 1 , wherein the control mechanism includes three of the first on-off valves and three of the first throttle points to adjust the gas volumetric flow supplied to the one of the gas outlets.

5. The gas valve unit of claim 3 , wherein the control mechanism includes at least one magnetically acting body to control the first and second on-off valves, the at least one magnetically acting body being movable in relation to the first and second on-off valves.

6. The gas valve unit of claim 3 , wherein the control mechanism includes at least two magnetically acting bodies, with a first one of the magnetically acting bodies being provided for control of the first on-off valves and a second one of the magnetically acting bodies being provided for control of the second on-off valves.

7. The gas valve unit of claim 5 , further comprising a movement device for moving the at least one magnetically acting body in relation to the first and second on-off valves, the movement device being constructed such that, starting from a completely closed gas valve unit, upon actuation the first on-off valves assigned to the one of the gas outlets are first actuated and subsequently the second on-off valves assigned to the other one of the gas outlets are actuated.

8. The gas valve unit of claim 6 , wherein, depending on a position of the first one of the magnetically acting bodies, either none of the first on-off valves is opened or precisely exactly one of the first on-off valves is opened or exactly two of the first on-off valves are opened.

9. The gas valve unit of claim 6 , wherein, depending on a position of the second one of the magnetically acting bodies either none of the second on-off valves is opened or exactly one of the second on-off valves is opened or exactly two second on-off valves are opened.

10. The gas valve unit of claim 7 , wherein the control mechanism includes two of the magnetically acting body, with a first one of the magnetically acting bodies being provided for control of the first on-off valves and a second one of the magnetically acting bodies being provided for control of the second on-off valves, the movement device being constructed to move the second magnetically acting body synchronously to the first magnetically acting body when the gas valve unit assumes a switch position in which at least one of the first on-off valves is opened and all second on-off valves are closed.

11. The gas valve unit of claim 7 , wherein the control mechanism includes two of the magnetically acting body, with a first one of the magnetically acting bodies being provided for control of the first on-off valves and a second one of the magnetically acting bodies being provided for control of the second on-off valves, the movement device being constructed such that in a switch position of the gas valve unit in which at least one of the second on-off valves is opened, the first magnetically acting body is not moved during a movement of the second magnetically acting body.

12. The gas valve unit of claim 7 , wherein the movement device is constructed such that at least one of the first on-off valves is opened at a same time as at least one of the second on-off valves is open.

13. The gas valve unit of claim 7 , wherein the movement device is constructed such that exactly one of the first on-off valves is opened at a same time as at least one of the second on-off valves is open.

14. A gas valve unit for adjusting a gas volume flow in a dual circuit gas burner of a gas appliance, comprising:
a valve body having a gas inlet and two gas outlets; and
a control mechanism constructed to adjust the gas volumetric flow supplied to one of the gas outlets in a number of stages and to adjust the gas volumetric flow supplied to the other one of the gas outlets in a number of stages,
wherein the control mechanism includes first on-off valves to adjust the gas volumetric flow supplied to the one of the gas outlets and second on-off valves to adjust the gas volumetric flow supplied to the other one of the gas outlets,
the control mechanism includes at least two magnetically acting bodies, with a first one of the magnetically acting bodies being provided for control of the first on-off valves and a second one of the magnetically acting bodies being provided for control of the second on-off valves, and
each of the at least two magnetically acting bodies is a permanent magnet.

15. The gas valve of claim 14 , wherein the control mechanism includes at least two of the first on-off valves and at least two first throttle points to adjust the gas volumetric flow supplied to the one of the gas outlets.

16. The gas valve of claim 15 , wherein the control mechanism includes at least two of the second on-off valves and at least two second throttle points to adjust the gas volumetric flow supplied to the other one of the gas outlets.

17. The gas valve of claim 15 , wherein the control mechanism includes four of the second on-off valves and four second throttle points to adjust the gas volumetric flow supplied to the other one of the gas outlets.

18. The gas valve unit of claim 15 , further comprising a first throttle path in which the first throttle points are disposed in series, and a connecting section arranged between each two adjacent first throttle points and linking one of the first on-off valves in an open state to the gas inlet.

19. The gas valve unit of claim 16 , further comprising a second throttle path in which the second throttle points are disposed in series, and a connecting section arranged between each two adjacent second throttle points and linking one of the second on-off valves in an open state to the gas inlet.

20. A gas valve unit for adjusting a gas volume flow in a dual circuit gas burner of a gas appliance, comprising:
a valve body having a gas inlet and two gas outlets; and
a control mechanism constructed to adjust the gas volumetric flow supplied to one of the gas outlets in a number of stages and to adjust the gas volumetric flow supplied to the other one of the gas outlets in a number of stages, the control mechanism including
at least two first on-off valves and at least two first throttle points to adjust the gas volumetric flow supp

Assignees

• Cadeau Christophe
• Naumann Jörn
• Bsh Bosch Siemens Hausgeraete

Inventors

• Cadeau Christophe
• Naumann Jörn

Classifications

• F23N2237/10

  High or low fire · CPC title

• F23N2241/08

  Household apparatus · CPC title

• F23N2235/18

  Groups of two or more valves · CPC title

• F23N2235/22

  cooperating with magnets · CPC title

• F23N1/007 Primary

  using mechanical means (F23N1/04 - F23N1/10 take precedence) · CPC title