US 7,651,330 B2 · Rotary valve arranged in a multi-gas cooker

Abstract

Cooking appliance (1A,1B) having an external and control panel (2,2′) equipped with one or more regulating valves, where the rotary regulator organ (6) is equipped with various peripheral openings (16-19) for supplying a flow Q. According to two embodiments (1A, 1B) of the cooking appliance, for the supply of one or another type of gas, NG or LPG, either the control knob (9) or a bezel disk (22) in the external panel (2) are interchangeable on the appliance, being chosen between two different available units, one and the other permitting two different angular position limits A2, A3 of the regulator organ (6) for the supply of a constant flow Qmin through one or another opening (18,19) with calibrated sections, respectively for NG or LP gas. An appendix (14) in the control knob (9) guided in a slide groove (20) on the control panel (2) of the appliance, or a tongue (24) on the bezel disk stopping the rotation of the control knob, determines the travel limit A2 for the supply of Qmin of NG.

Claims16

Dependent claims

A valve comprising:

a valve body having a rotatable regulating organ positioned between a valve inlet and a valve outlet, the regulating organ configured to vary the flow rate of the gaseous fuel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determining a first minimum flow rate of a first predetermined type of gas, and a second angular position of the regulating organ, successive to the first angular position, determining a second minimum flow rate of a second predetermined type of gas;
and
a control knob used to manipulate the angular position of the regulating organ coupled to the regulating organ by an actuating shaft, the control knob having a feature co-operable with a part of an appliance to which the valve is to be attached to prevent rotation of the regulating organ beyond the first angular position, absent the presence of the feature on the control knob the regulating organ is rotatable to the second angular position.

A gas cooking appliance adapted for a supply of either a first predetermined type of gas or a second predetermined type of gas comprising:

a regulating valve having a valve body provided with a housing for a regulator organ, an inlet conduit and an outlet conduit, and an actuating shaft operationally coupled to the regulator organ and protruding from a control panel of the cooking appliance, wherein a regulated gas flow “Q” is directed towards the outlet conduit to a cooking appliance burner adapted to one of these predetermined types of gas,
the regulator organ provided with a revolution peripheral surface and various peripheral through openings for the passage of a regulated flow “Q” to a central chamber in communication with the outlet conduit, the passage openings being in alignment with the inlet conduit, successively in function of a respective angular position of the regulator organ,
wherein, starting from an initial valve closed “OFF” position, in accordance with each one of the angular positions of the regulating organ, three different flows, a constant maximum flow “Qmax”, a constant minimum flow “Qmin”, and an intermediate flow “Qint” between them, are supplied to the outlet conduit, in function of the area of the through opening facing the inlet conduit, and
a control knob attached to the actuating shaft useable to manipulate the angular position of the regulator organ, the control knob having a feature that cooperates with a part of the appliance to prevent rotation of the regulating organ beyond a first angular position for the supply of a first flow Qmin through one of the through openings, calibrated for the first predetermined type of gas, the regulator organ rotatable to a second angular position successive to the first angular position absent the presence of the feature on the control knob for the supply of a second flow Qmin for the second predetermined type of gas, through one of the through openings, calibrated for the second predetermined type of gas, spaced apart from the first calibrated opening.

1 more element

Dependencies are inferred from the claim text.

Rotary valve arranged in a multi-gas cooker

Life of this patent

Rotary valve arranged in a multi-gas cooker

Life of this patent

Abstract

Claims16