Rotary valve in a multi-gas cooker
OwnerIñigo Albizuriinventor
Life of this patent
Estimating the term…
Abstract
The cooking appliance (1) having a control panel (2) is equipped with one or more gas flow (Q) regulating valves, wherein the rotary regulator organ (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 (A2, A3) for the supply of a constant minimum gas flow Qmin, through one of two successive holes (18, 19) calibrated each one for a different type of gas NG or LPG, one or the other hole being superimposed to a valve inlet duct (4) at a different angular position A2, A3. An integral lug (14) on the control knob (9) running into a slide groove (20) in the control panel (2), establishes a first rotation stop A2.
Claims3
Gas cooking appliance adapted for a supply with different types of gaseous fuel, natural gas (NG) or liquefied petroleum gas (LPG), equipped with one or more regulating valves (3) of the rotary regulator organ (6) type, comprising:
- a regulating valve (3) having a valve body (3a) provided with a housing for the regulator organ (6), an inlet conduit (4) and an outlet conduit (5), and an actuating shaft (7) mounted salient from a control panel (2) on the cooking appliance (1), wherein a regulated gas flow “Q” is directed towards the outlet conduit (5) to a cooking appliance burner adapted to one of these types of gas,
- said rotary regulator organ (6) provided with a revolution peripheral surface and various peripheral through openings (16–19) for the passage of a regulated flow “Q” to a central chamber (8) in communication with said outlet conduit (5), the passage openings being superimposed in alignment with said inlet conduit (4), successively in function of a respective angular position of the regulator organ (6),
- wherein, starting from an initial valve closed “OFF” position (A1,A1/A2,A2,A3), in accordance with each one of said angular positions (A1,A1/A2,A2,A3) of the regulating organ (5), three different possible flows, a constant maximum flow “Qmax”, a constant minimum flow “Qmin”, and an intermediate flow “Qint” between them, are supplied to the outlet conduit (5), in function of the area of the through opening (16–19) facing the inlet conduit (4),
- said actuating shaft (7) provided with a means (13) for guiding the angular travel (A3) of the regulator organ (6), interacting with a rotation stop means (12a) in the valve body (12a),
- an interchangeable control knob (9) fitted at the free end of the actuating shaft (7), provided with a integral means (14) for guiding said angular travel (A2) and interacting with a rotation stop means (20) in the control panel (2) of the appliance,
- wherein said rotation stop means (12a) in the valve body (12a) determines an angular position A2 of the regulating organ (6), for the supply of a first flow Qmin through one of said openings (18), calibrated for one type of gas (NG), and said rotation stop means (20) in the control panel (2) determines an angular position A3 successive to the prior position A2, for the supply of a second flow Qmin for another type of gas (LPG), through a second calibrated opening (19) spaced apart from the former.
Dependencies are inferred from the claim text.