초록 ▼

The cooking appliance (1) having a control panel (2) is equipped with one or more gas flow (Q) regulating valves, wherein the rotary regulating plug (6) is provided with various peripheral through holes (16-19). The control knob (9) being interchangeable for fitting to the actuating shaft (7), is ch

The cooking appliance (1) having a control panel (2) is equipped with one or more gas flow (Q) regulating valves, wherein the rotary regulating plug (6) is provided with various peripheral through holes (16-19). The control knob (9) being interchangeable for fitting to the actuating shaft (7), is chosen from the two units available, one and the other permitting different angular limit positions of the regulating plug (6) for the supply of a constant minimum gas flow Qmin, adjusted each one for a different type of gas N gas or LP gas. The outlet conduit (5) of the valve is equipped with a further injector nozzle (21,23) for adjusting a constant gas flow Qmax to be fed into the conduit (25) of the correspondent burner, when the cooking appliance is supplied with a LP gas.

대표청구항 ▼

What is claimed is: 1. 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

What is claimed is: 1. 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 determines 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, determines a second minimum flow rate of a second predetermined type of gas, 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, the valve outlet having a first restriction that determines a first maximum flow rate of the first predetermined type of gas, the valve outlet configured to receive a second restriction successive to the first restriction that is configured to provide a second maximum flow rate of the second predetermined type of gas, the second maximum flow rate being lower than the first maximum flow rate. 2. The valve of claim 1 wherein the first restriction is a removable press-in or threaded disk having a hole. 3. 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 libel at the valve outlet as a function of an angular position of the regulating organ, a first angular position of the regulating organ determines 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, determines a second minimum flow rate of a second predetermined type of gas, 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 first restriction integrated into the valve outlet that determines a first maximum flow rate of the first predetermined type of gas; and a second restriction removably attached to the valve outlet downstream of the first restriction, the second restriction determining a second maximum flow rate of the second predetermined type of gas, the second maximum flow rate being lower than the first maximum flow rate. 4. The valve of claim 3 wherein the second restriction is a hole located within a nozzle. 5. The valve of claim 4 wherein the nozzle is threaded onto the valve outlet. 6. A gas cooking appliance adapted for a supply of either a first predetermined type of gas or a second predetermined type of gas to a burner comprising: at least one regulating valve with a valve body, the valve body having a rotatable regulating organ operationally coupled to an actuating shaft that protrudes from a control panel of the cooking appliance, the regulating organ positioned between a valve inlet and a valve outlet and 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 the 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 the second predetermined type of gas, a control knob attached to the actuating shaft useable to manipulate the angular position of the regulating organ, the control knob having a feature that cooperates with a part of the appliance other than the valve to prevent rotation of the regulating organ beyond the first angular position, the regulating organ rotatable to the second angular position successive to the first angular position absent the presence of the feature on the control knob, the valve outlet having a first restriction that determines a first maximum flow rate of the first predetermined type of gas, the valve outlet configured to receive a second restriction successive to the first restriction that determines a second maximum flow rate of the second predetermined type of gas, the second maximum flow rate being lower than the first maximum flow rate. 7. The appliance of claim 6 wherein the first restriction is a removable press-in or threaded disk having a hole. 8. The appliance of claim 6 wherein the burner has a feed conduit facing the valve outlet, there existing an air gap between the valve outlet and the feed conduit. 9. The appliance of claim 6 wherein the feature of the control knob projects from a base of the control knob facing the control panel and travels within a groove in the control panel, the groove having an extension, an end of the extension corresponding to the first angular position. 10. The appliance of claim 6 wherein the actuating shaft has associated with it an engagement feature that cooperates with a part of the valve to impede rotation of the regulating organ beyond the second angular position. 11. The appliance of claim 6 wherein the first predetermined type of gas is natural gas and the second predetermined type of gas is liquefied gas. 12. A method for establishing the gas compatibility of a gas appliance having a valve capable of regulating the flow rate of a gaseous fuel of either a first type of gas or a second type of gas to a burner in the appliance, the valve having a valve body with a rotatable regulating organ positioned between a valve inlet and a valve outlet, the regulating organ operationally coupled to an actuating shaft and 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 the first 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 the second type of gas, the method comprising: selecting between a first control knob and second control knob for attachment to the actuating shaft, the first and second control knobs useable to manipulate the angular position of the regulating organ, the first control knob having a feature engagable with a part of the appliance that impedes rotation of the regulating organ beyond the first angular position to establish a gas compatibility with the first gas, the second control knob not having a feature to engage with a part of the appliance to permit rotation of the regulating organ to the second angular position to establish gas compatibility with the second gas, attaching the selected first or second control knob to the actuating shaft, attaching a restriction that is calibrated for a given maximum flow rate of the second type of gas to the valve outlet when the second control knob is selected. 13. The method of claim 12 wherein the first type of gas is natural gas and the second type of gas is liquefied gas.