Gas valve unit

Patent metadata

Field	Value
Publication number	US-10436444-B2
Application number	US-201414771214-A
Country	US
Kind code	B2
Filing date	Mar 5, 2014
Priority date	Mar 13, 2013
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A gas valve unit for controlling a gas throughput guided to a gas burner of a gas device includes a plurality of on-off valves. Each on-off valve includes a movable valve body with a shut-off body and an activation area, a closing spring which, when the on-off valve is closed, pushes the shut-off body onto a sealing seat and thereby closes an opening. A driver lifts the shut-off body away from the sealing seat for opening the on-off valve by a force caused by the driver when engaging into the activation area against a force of the closing spring. The valve body has a shoulder area to accept a torque arising on engagement of the driver into the activation area.

First claim

The invention claimed is:

1. A gas valve unit for controlling a gas throughput guided to a gas burner of a gas device, comprising a plurality of on-off valves, each on-off valve including a movable valve body with a shut-off body and an activation area, a closing spring which, when the on-off valve is closed, pushes the shut-off body onto a sealing seat and thereby closes an opening, and a driver configured to lift the shut-off body away from the sealing seat for opening the on-off valve by a force caused by the driver when engaging into the activation area against a force of the closing spring, said valve body having a shoulder area configured to accept a torque arising on engagement of the driver into the activation area, wherein the activation area is embodied as a lever arm connected with the shoulder area.

2. The gas valve unit of claim 1 for controlling the gas throughput guided to the gas burner of a gas cooking appliance as the gas device.

3. The gas valve unit of claim 1 , wherein the shoulder area is configured to restrict a lift of the valve body in the gas valve unit.

4. The gas valve unit of claim 3 , wherein the closing spring is positioned between the shut-off body and the lever arm.

5. The gas valve unit of claim 1 , further comprising a ring-shaped disk which is configured to position the closing spring of each of the on-off valves between the shut-off body and the lever arm and to provide a predetermined distance between the lever arm and the closing spring, said ring-shaped disk maintaining the closing springs of the on-off valves under tension.

6. The gas valve unit of claim 5 , wherein the distance is predetermined for engagement of the driver into the activation area of the valve body.

7. The gas valve unit of claim 5 , wherein the ring-shaped disk has a plurality of tabs of a number corresponding to a number of the closings springs of the on-off valves for centering the closing springs.

8. The gas valve unit of claim 7 , wherein the number of tabs of the ring-shaped disk for centering the closing springs is twice the number of the closing springs of the on-off valves, each said closing spring being centered by two of the tabs.

9. The gas valve unit of claim 5 , wherein the ring-shaped disk includes at least one torsion proofing device for torsion-proof positioning of the ring-shaped disk in the gas valve unit.

10. The gas valve unit of claim 1 , wherein the shut-off bodies of the on-off valves are disposed on a circular track around an axis of the gas valve unit, said shut-off bodies being movable in parallel relation to the axis.

11. The gas valve unit of claim 10 , further comprising a grip shaft to define the axis.

12. The gas valve unit of claim 1 , wherein the driver and the on-off valves are configured such that, depending on a position of the driver, either none of the on-off valves is opened or precisely one of the on-off valves is opened or precisely two of the on-off valves are opened.

13. The gas valve unit of claim 1 , wherein the on-off valves are arranged in a circular arrangement, and further comprising a grip shaft, said driver being disposed, as a function of an angle of the grip shaft, above the circular arrangement of the on-off valves.

14. The gas valve unit of claim 13 , further comprising a control disk including a torque transmission device for transmitting a torque from the grip shaft to the control disk, said driver forming part of the control disk.

15. The gas valve unit of claim 1 , further comprising a nozzle plate having openings of different diameters with successively decreasing opening cross section.

16. A gas valve, comprising at least one gas valve unit for controlling a gas throughput guided to a gas burner of a gas device, said gas valve unit comprising a plurality of on-off valves, each on-off valve including a movable valve body with a shut-off body and an activation area, a closing spring which, when the on-off valve is closed, pushes the shut-off body onto a sealing seat and thereby closes an opening, and a driver configured to lift the shut-off body away from the sealing seat for opening the on-off valve by a force caused by the driver when engaging into the activation area against a force of the closing spring, said valve body having a shoulder area configured to accept a torque arising on engagement of the driver into the activation area, wherein the activation area is embodied as a lever arm connected with the shoulder area.

17. The gas valve of claim 16 , wherein the shoulder area is configured to restrict a lift of the valve body in the gas valve.

18. The gas valve of claim 16 , wherein the closing spring is positioned between the shut-off body and the lever arm.

19. The gas valve of claim 18 , wherein the gas valve unit includes a ring-shaped disk which is configured to position the closing spring of each of the on-off valves between the shut-off body and the lever arm and to provide a predetermined distance between the lever arm and the closing spring, said ring-shaped disk maintaining the closing springs of the on-off valves under tension.

20. The gas valve of claim 19 , wherein the ring-shaped disk includes at least one torsion proofing device for torsion-proof positioning of the ring-shaped disk in the gas valve.

21. The gas valve of claim 19 , wherein the distance is predetermined for engagement of the driver into the activation area of the valve body.

22. The gas valve of claim 19 , wherein the ring-shaped disk has a plurality of tabs of a number corresponding to a number of the closings springs of the on-off valves for centering the closing springs.

23. The gas valve of claim 22 , wherein the number of tabs of the ring-shaped disk for centering the closing springs is twice the number of the closings springs of the on-off valves, each said closing spring being centered by two of the tabs.

24. The gas valve of claim 16 , wherein the shut-off bodies of the on-off valves are disposed on a circular track around an axis of the gas valve, said shut-off bodies being movable in parallel relation to the axis.

25. The gas valve of claim 24 , wherein the gas valve unit includes a grip shaft to define the axis.

26. The gas valve of claim 16 , wherein the driver and the on-off valves are configured such that, depending on a position of the driver, either none of the on-off valves is opened or precisely one of the on-off valves is opened or precisely two of the on-off valves are opened.

27. The gas valve of claim 16 , wherein the on-off valves are arranged in a circular arrangement, wherein the gas valve unit includes a grip shaft, said driver being disposed, as a function of an angle of the grip shaft, above the circular arrangement of the on-off valves.

28. The gas valve of claim 27 , wherein the gas valve unit includes a control disk including a torque transmission device for transmitting a torque from the grip shaft to the control disk, said driver forming part of the control disk.

29. The gas valve of claim 16 , wherein the gas valve unit includes a nozzle plate having openings of different diameters with successively decreasing opening cross section.

30. A gas appliance, comprising a gas valve, said gas valve comprising at least one gas valve unit for controlling a gas throughput guided to a gas burner of a gas device, said gas valve unit comprising a plurality of on-off

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Cadeau Christophe
• Naumann Jörn

Classifications

• F23N2235/24

  Valve details · CPC title

• F23N2235/16

  variable flow or proportional valves · CPC title

• F23N1/007 Primary

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

• F16K31/52416

  comprising a multiple-way lift valve · CPC title

• F23N5/107

  using mechanical means, e.g. safety valves · CPC title