Patent ID: 8770216
Filing Date: 2014-07-08
Classification: F17C,Y10T

Abstract:
1. A device adapted to withdraw gas and to control the gas flow rate discharged therefrom comprising: a filling valve initially in a shut position and adapted to be engaged to move to an open position for filling liquid gas; and a sleeve having a hollow shape and including an open end engaged with the filling valve, and a peripheral wall including a fluid passing zone that enables liquid gas outside the sleeve to flow inside; an absorbing member having an ability to absorb liquid gas disposed in the sleeve; a gas control unit including a main body, a gas inlet and flow rate adjusting mechanism, and a gas outlet mechanism, with the main body including one end receiving the gas inlet and flow rate adjusting mechanism and another end receiving the gas outlet mechanism respectively, with the main body including first and second chambers, and a passage, with the first and second chambers defined in two ends of the main body respectively, with the first chamber receiving the gas inlet and flow rate adjusting mechanism and the second chamber receiving the gas outlet mechanism respectively, with the first and second chambers interconnected by the passage, with the gas inlet and flow rate adjusting mechanism including an adjustably movable valve and a first air seal, with the adjustably movable valve adjustably mounted on the main body, with the first air seal mounted between the adjustably movable valve and the main body to prevent liquid gas from passing therebetween, with the adjustably movable valve including an end engaged with the sleeve and the absorbing member such that after the absorbing member absorbs liquid gas outside the sleeve through the fluid passing zone, vaporized gas emitted from the absorbing member is able to flow into the adjustably movable valve, with the adjustably movable valve in fluid communication with the gas outlet mechanism such that vaporized gas is discharged from the device from the gas outlet mechanism, wherein the adjustably movable valve includes a receptacle extended therein and an aperture extended radially therethrough and in fluid communication with the receptacle, with an end of the absorbing member received in the receptacle, with the gas inlet and flow rate adjusting mechanism including a soft member and a hard member disposed in the first chamber, with the soft member made of foam, with the soft member deressible by the adjustably movable valve to have various heights and density, with different heights determining the flow rate of vaporized gas in the gas outlet mechanism, with the hard member made of copper, with the adjustably movable valve including a surface defining a pressing end, with the pressing end abutted against the hard member and the hard member abutted against the soft member respectively; and a can providing a gas storage space and defining a bottom and a top, with the can including a through hole extended in the bottom, wherein the device is disposed in the can, with the filling valve disposed in the through hole, with the filling valve prevented from being completely inserted through the through hole and disengaged from the can, with the through hole having a diameter, with the filling valve including an outer periphery including a stop structure extended therefrom such that the filling valve with the stop structure extended therefrom has a diameter greater than the diameter of the through hole.