Gas valve unit

Patent metadata

Field	Value
Publication number	US-2016010857-A1
Application number	US-201414771214-A
Country	US
Kind code	A1
Filing date	Mar 5, 2014
Priority date	Mar 3, 2013
Publication date	Jan 14, 2016
Grant date	—

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

1 - 16 . (canceled)

17 . 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.

18 . The gas valve unit of claim 17 for controlling the gas throughput guided to the gas burner of a gas cooking appliance as the gas device.

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

20 . The gas valve unit of claim 17 , wherein the activation area is embodied as a lever arm connected with the shoulder area.

21 . The gas valve unit of claim 20 , wherein the closing spring is positioned between the shut-off body and the lever arm.

22 . The gas valve unit of claim 21 , 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.

23 . The gas valve unit of claim 22 , wherein the distance is predetermined for engagement of the driver into the activation area of the valve body.

24 . The gas valve unit of claim 22 , 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.

25 . The gas valve unit of claim 24 , 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.

26 . The gas valve unit of claim 17 , 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.

27 . The gas valve unit of claim 26 , further comprising a grip shaft to define the axis.

28 . The gas valve unit of claim 22 , 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.

29 . The gas valve unit of claim 17 , 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.

30 . The gas valve unit of claim 17 , 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.

31 . The gas valve unit of claim 30 , 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.

32 . The gas valve unit of claim 17 , further comprising a nozzle plate having openings of different diameters with successively decreasing opening cross section.

33 . 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.

34 . The gas valve of claim 33 , wherein the shoulder area is configured to restrict a lift of the valve body in the gas valve.

35 . The gas valve of claim 33 , wherein the activation area is embodied as a lever arm connected with the shoulder area.

36 . The gas valve of claim 35 , wherein the closing spring is positioned between the shut-off body and the lever arm.

37 . The gas valve of claim 36 , 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.

38 . The gas valve of claim 37 , wherein the distance is predetermined for engagement of the driver into the activation area of the valve body.

39 . The gas valve of claim 37 , 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.

40 . The gas valve of claim 39 , 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.

41 . The gas valve of claim 33 , 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.

42 . The gas valve of claim 41 , wherein the gas valve unit includes a grip shaft to define the axis.

43 . The gas valve of claim 37 , 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.

44 . The gas valve of claim 33 , 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.

45 . The gas valve of claim 33 , 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.

46 . The gas valve of claim 45 , 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.

47 . The gas valve of claim 33 , wherein the gas valve unit includes a nozzle plate having openings of different diameters with successively decreasing opening cross section.

Assignees

• Bsh Hausgeraete Gmbh
• BSH Haugeräte GmbH

Inventors

• Cadeau Christophe
• Naumann Jörn

Classifications

• F23N2235/16

  variable flow or proportional valves · CPC title

• F23N2235/24

  Valve details · CPC title

• F23N1/007 Primary

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

• F23N5/107

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

• F16K31/52416

  comprising a multiple-way lift valve · CPC title