Valve unit for controlling the delivery of a fuel gas
First Claim
1. A valve unit for controlling the delivery of a fuel gas through a delivery duct, the valve unit comprising:
- a valve seat located in the duct,a closure member associated with the valve seat,a motor-driven actuator acting on the closure member, having;
a rod for operating the closure member,wherein the actuator controls the closure member to open or close the valve seat,an electromagnetic unit associated with the actuator having;
a first portion having a magnetizing winding, wherein the first portion is connected to a stationary structure of the valve unit, anda second portion having a movable armature mounted on one end of the rod, wherein the second portion is configured to be firmly fixed to the first portion by magnetization,wherein the actuator and the second portion of the electromagnetic unit move together, and the movement opens or closes the valve seat.
1 Assignment
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Accused Products
Abstract
A valve unit for controlling the delivery of a fuel gas through a delivery duct (3) comprises a valve seat (6) in the duct, a closure member (5) associated with the seat, a motor-driven actuator (7) acting on the closure member in order to control it so as to open/close the valve seat, as well as an electromagnetic unit (22) with a first portion (23) carrying a magnetizing winding (24) and a second portion (25) which can be fixed firmly to the first position by magnetization. The electromagnetic unit (22) is associated with the actuator in order to act on the closure member (5) so as to close the valve seat (6), irrespective of the operative position of the actuator (7), upon the occurrence of a predetermined condition which requires the valve seat to be shut off, and the actuator means (7) is movable, together with the second portion (25) of the electromagnetic unit (5) so as to open/close the valve seat, the first portion (23) of the electromagnetic unit being connected to a stationary structure of the valve unit.
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Citations
12 Claims
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1. A valve unit for controlling the delivery of a fuel gas through a delivery duct, the valve unit comprising:
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a valve seat located in the duct, a closure member associated with the valve seat, a motor-driven actuator acting on the closure member, having; a rod for operating the closure member, wherein the actuator controls the closure member to open or close the valve seat, an electromagnetic unit associated with the actuator having; a first portion having a magnetizing winding, wherein the first portion is connected to a stationary structure of the valve unit, and a second portion having a movable armature mounted on one end of the rod, wherein the second portion is configured to be firmly fixed to the first portion by magnetization, wherein the actuator and the second portion of the electromagnetic unit move together, and the movement opens or closes the valve seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification