Referring to
Wherein: the metering tray 30 includes a tray 31 that is provided thereon with a reset switch 32 contacting with the combustion gas supplying cylinder 20, the reset switch 32 generates a triggering signal when the combustion gas supplying cylinder 20 moves, the triggering signal is transmitted to the display controller 10, thereby each time when the combustion gas supplying cylinder 20 is placed once again on the top of the tray 31, the reset switch 32 will contact the bottom of the combustion gas supplying cylinder 20 to transmit the triggering signal to the display controller 10, hence the display controller 10 is zero set once again and corrected for the accuracy of weight measured to thereby assure the accuracy of metering and timing.
Referring to
Wherein the elastic element 331 is provided for reacting upon the state of the pressure on the tray 31 to deform, the resistance-variable piece 332 stuck to the elastic element 331 can generate different values of resistance in accordance with the amount of deformation of the elastic element 331, a signal of each value can be transmitted to the display controller 10. When the combustion gas supplying cylinder 20 generates variation of weight by using the gas to transmit to the display controller 10, the display controller 10 can obtain a consumption rate representing the reduced weight accumulated for a period of time of the supplying cylinder, thereby the time duration that the remaining weight left can be used in the combustion gas supplying cylinder 20 can be calculated and displayed; and the metering tray 30 is provided further with a fixing member 34 for fixing the combustion gas supplying cylinder 20.
Referring to
Referring to
The VCC, VSS of the signal transduction unit 11 are connected respectively with a positive and a negative electrode of an electric power supply, thus the resistance signal of the pressure detector 33 can be changed to voltage and output to the signal amplifier 12 via an OUT- and an OUT+, then the signal amplifier 12 amplifies the signal for receiving of the microprocessor 13, then the microprocessor 13 calculates the time duration available for using the remaining combustion gas, i.e., the microprocessor 13 calculates the time duration available for using the combustion gas available now from the gross weight of the combustion gas available now, and the time duration is shown in the display 14 by hours and minutes for reading of a user.
In addition to calculating the time duration available for using the remaining combustion gas, the microprocessor 13 of the display controller 10 is respectively connected with the master valve 41 and the manual valves 42 of the combustion gas electric valve unit 40, when fire on the master valve 41 connected with the display controller 10 is accidentally extinguished in the middle of burning or is extinguished at a set time, gas can be automatically blocked by shutting the master valve 41, the master valve 41 is unable to be opened again unless all the manual valves 42 have been shut.
Referring again to
And more, the display 14 can further includes a function push button set 141 and a displaying screen 142, wherein the function push button set 141 includes at least a mode-switching push button, an activating and reset push button and a time-setting push button; and the displaying screen 142 can do switching among many kinds of displaying modes, for example: an action-displaying mode of the master valve 40, a timing displaying mode, a self-cleaning displaying mode and a displaying mode of the remaining time of using combustion gas etc.
The preferred embodiment shown and described is only for illustrating the present invention, and not for giving any limitation to the scope of the present invention; it will be apparent to those skilled in this art that various modifications or changes without departing from the spirit of this invention shall also fall within the scope of the appended claims.