Safety systems for battery-supplied fogging device
AssigneeUr Fog S.R.L.
InventorsMauro Lombardo, Giovanni Balestrini, Marco Zangirolami
Life of this patent
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Abstract
A safety system for a battery-powered fog generator is described, designed to operate on a vaporization coil (2) of a fogging fluid; the safety system includes: a fuse wire (1), each placed at one end of the coil (2), suitable for heating both due to a Joule effect and through heat coming from the coil (2) by thermal conduction, the fusible wire (1) being therefore designed to melt when its temperature exceeds a melting threshold value, interrupting the power supply from the battery to the coil (2); a sensor (6) designed to detect the temperature of the coil (2) when current flows in it; and a control unit (7) operatively connected to the sensor (6).
Claims20
A safety system for battery-powered fogging device, the safety system being designed to operate on a vaporization coil of a fogging fluid of the fogging device, the safety system comprising:
- at least one fusible wire, each placed at one end of the coil, the fusible wire, during the production of fog by the fogging device, being able to heat up both due to a Joule effect and via heat coming from the coil by thermal conduction, the fusible wire being therefore designed to melt when its temperature exceeds a melting threshold value, interrupting the power supply from the battery to the coil;
- at least one sensor designed to detect the temperature of the coil upon the passage of current in the coil;
- and
- at least one control unit operatively connected to the at least one sensor,
- wherein the at least one sensor is an optical type sensor, designed to detect, upon reaching a temperature well above the maximum normal operating temperature, light in the red band emitted by the coil, the optical sensor being a photodiode, a phototransistor, or a CdS photocell, and being designed to control, on the basis of the detected light, an interruption of the flow of current, and the control unit being designed to measure the current of the coil, increasing the reliability of the system.
A safety system for battery-powered fogging device, the safety system being designed to operate on a vaporization coil of a fogging fluid of the fogging device, the safety system comprising:
- at least one fusible wire, each placed at one end of the coil, the fusible wire, during the production of fog by the fogging device, being able to heat up both due to a Joule effect and via heat coming from the coil by thermal conduction, the fusible wire being therefore designed to melt when its temperature exceeds a melting threshold value, interrupting the power supply from the battery to the coil;
- at least one sensor designed to detect the temperature of the coil upon the passage of current in the coil;
- at least one control unit operatively connected to the at least one sensor, wherein the control unit is designed to measure the current of the coil, increasing the reliability of the system;
- and
- a control system configured to generate a square wave with a frequency between 0.5 Hz and 50 Hz and a variable duty cycle, making it possible to limit the onset of instability phenomena during the operation of the fogging device.
Dependencies are inferred from the claim text.