Patent EP-2186573-A1 (EP)
Inventor: SARDO ALBERTO
IPC: A23B7/153
Filed: 2009-11-17
Abstract: The device comprises an assembly (3) for producing a hot gas flow under pressure having an outlet of hot gas, a nozzle (5) having a hot gas inlet connected to the hot gas outlet and an outlet for ejection of a liquid mist, a first liquid source (7), a unit for injecting a measured flow of liquid from the first source of liquid in the nozzle, a probe (11) for detecting a total or partial interruption of measured flow of liquid injected in the nozzle from the first liquid source, a second source (13) of liquid, and a unit to inject a flow of liquid relief from the second source of liquid. The device comprises an assembly (3) for producing a hot gas flow under pressure having an outlet of hot gas, a nozzle (5) having a hot gas inlet connected to the hot gas outlet and an outlet for ejection of a liquid mist, a first liquid source (7), a unit for injecting a measured flow of liquid from the first source of liquid in the nozzle, a probe (11) for detecting a total or partial interruption of measured flow of liquid injected in the nozzle from the first liquid source, a second source (13) of liquid, and a unit to inject a flow of liquid relief from the second source of liquid in the nozzle when the probe detects a total or partial interruption of measured flow of liquid injected into the nozzle from the first liquid source. The unit for injecting the measured flow of liquid comprises a fluid dispenser body having a liquid suction inlet connected to the first source of liquid and a liquid discharge outlet connected to an inlet of liquid of the nozzle. The unit for injecting the flow of liquid relief comprises a valve body for selectively connecting the liquid suction inlet of the dozer body to the second liquid source. The probe is able to measure a current temperature of the gas in the nozzle in downstream of the liquid inlet. A logic controller is arranged to collect current temperature of the gas measured by the probe, to compare the current temperature with a predetermined maximum value, and to control the valve body for connecting the inlet of liquid suction of the dispenser body to the second liquid source when the current temperature is greater than the predetermined maximum value. The valve body comprises a three-way valve comprising a first liquid inlet connected to the first liquid source, a second liquid inlet connected to the second liquid source and an outlet connected to the suction inlet of the liquid of dispenser body. The first liquid source undergoes a chemical treatment, and the second liquid source is a source of a liquid devoid of the chemical treatment. The second liquid source is a water source, and comprises an airtight reservoir. The assembly further comprises a blower provided by an exhaust gas inlet and an outlet of pressurized gas discharge, and a body for heating the pressurized gas with an inlet of cold gas connected to the discharge outlet of the ventilator and an outlet constituting the hot gas outlet. The injecting units comprise a duct placed under pressure connecting the discharge outlet of the blower to a roof of the second liquid source, and nozzle connecting the second liquid source to a liquid inlet of the nozzle. An independent claim is included for a process for heat fogging of a liquid.