Device for controlling the ignition of gas burners of a domestic cooking appliance

Patent metadata

Field	Value
Publication number	US-11085638-B2
Application number	US-201816179132-A
Country	US
Kind code	B2
Filing date	Nov 2, 2018
Priority date	Nov 8, 2017
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A device is provided for controlling the ignition of gas burners of a domestic cooking appliance. The device includes an electric switch with an insulating casing that carries a pair of fixed electric contacts. A movable body carries a movable electric contact that cooperates with the fixed electric contacts. The movable body is displaceable with respect to the casing between an open position and a closed position. An elastic element elastically pushes movable body toward the open position. A flexible cable has a first end that is anchored to the movable body and a second end that is anchored to a fixed support. A plurality of actuating members is associated with respective gas taps and have movable elements that cooperate with respective sections of the flexible cable. Each actuating member can bend a respective portion of the flexible cable into corrugated shape during the opening of the respective gas tap.

First claim

The invention claimed is:

1. A control device for controlling the ignition of gas burners of a domestic cooking appliance, comprising:
an electrical switch comprising an insulating casing carrying at least one fixed electric contact, a movable body which is displaceable with respect to the casing between an open switch position and a closed switch position, a movable electrical contact cooperating with the at least one fixed electric contact due to the displacement of the movable body, and an elastic element which elastically pushes the movable body towards the open switch position,
a flexible cable stretched along a rectilinear direction, the flexible cable having a first end anchored to the movable body and a second end anchored to a fixed support, and
a plurality of actuating members associated with respective gas taps and having respective movable elements which cooperate with respective sections of the flexible cable and bend respective portions of the flexible cable during the opening of the respective gas tap.

2. The control device of claim 1 , wherein the electric switch includes an insulating casing carrying a pair of fixed electric contacts, a movable body carrying a movable electric contact cooperating with the fixed electric contacts, wherein the movable body is displaceable with respect to the casing between an open position and a closed position, and an elastic element which elastically pushes the movable body towards the open position.

3. The control device of claim 2 , wherein the movable contacts are elongated in the direction of movement of the movable body and the movable contact has two deformable wings which bend in contact with the fixed contacts.

4. The control device of claim 1 , wherein each of the actuating members comprises a support fixed to the respective gas tap and a movable element movable with respect to the support along a rectilinear direction transverse to the flexible cable.

5. The control device of claim 3 , wherein the rectilinear direction along which the movable elements of the actuating members are movable is parallel or radial with respect to an axis of a stem of the respective gas tap.

6. The control device of claim 4 , wherein the support and the movable element have respective teeth between which the respective section of the flexible cable extends, wherein the teeth interpenetrate each other to bend the respective section of the flexible cable according to a corrugated shape.

7. The control device according to claim 3 , wherein the movable element of each actuating member comprises a ring which engages with clearance in an axial direction a groove formed on a stem of the respective gas tap.

8. The control device of claim 4 , wherein the support mounted on the gas tap farthest from the switch carries a lever articulated to the support and provided with teeth adapted to lock one end of the cable against a wall of the support.

9. A domestic cooking appliance comprising:
a plurality of gas burners,
a plurality of spark plugs associated with respective ones of the plurality of gas burners,
an igniter electrically connected to the spark plugs,
a plurality of gas taps for regulating the flow of gas supplied to respective ones of the plurality of gas burners, and
a control device comprising:
an electrical switch comprising an insulating casing carrying at least one fixed electrical contact, a movable body which is displaceable with respect to the casing between an open switch position and a closed switch position, a movable electrical contact cooperating with the at least one fixed electrical contact due to the displacement of the movable body, and an elastic element which elastically pushes the movable body towards the open switch position,
a flexible cable stretched along a rectilinear direction, the flexible cable having a first end anchored to the movable body and a second direction end anchored to a fixed support, and
a plurality of actuating members associated with respective gas taps and having respective movable elements which cooperate with respective sections of the flexible cable and bend respective portions of the flexible cable during the opening of the respective gas tap, and

wherein the control device is arranged to close the electric supply circuit of the igniter during the opening of each of the gas taps.

Assignees

• Illinois Tool Works

Inventors

• Chirumbolo Dino
• Minniti Bruno

Classifications

• H01H13/52

  the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch · CPC title

• H01H3/0206

  Combined operation of electric switch and of fluid control device · CPC title

• H01H1/44 Primary

  with resilient mounting · CPC title

• F23Q3/00

  Igniters using electrically-produced sparks (sparking-plugs H01T13/00) · CPC title

• F24C3/103

  of electric ignition devices · CPC title