Handheld portable hot air device
AssigneeLooft Industries AB
InventorRichard LOOFT
Life of this patent
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Abstract
A handheld, portable hot air device (1, 30) comprising an electrical heating element (31), a fan (33) for inducing an air stream to pass the heating element (31) and an accumulator (34) for powering the heating element (31) and the fan (33), and in that said heating element (1, 31) comprises a ceramic tube (35) having a rear end and a front end and in which rear end a wire circuit (41, 42) with at least one heating wire (32) enters and leaves the ceramic tube (35) and in that the heating wire (32) either protrudes out from the front end of the ceramic tube (35) or enters the front end of the ceramic tube (35) in a spiral formed shape and in that one heating wire (421) is wrapped around a central ceramic conduit (43) located in the center of the ceramic tube (35).
Claims29
A handheld, portable hot air device comprising an electrical heating element, a fan for inducing an air stream to pass the heating element and an accumulator for powering the heating element and the fan, wherein said heating element comprises a ceramic tube having a rear end and a front end, wherein a wire circuit with at least one heating wire enters and leaves the ceramic tube at the rear end, wherein the heating wire either protrudes out from the front end of the ceramic tube or enters the front end of the ceramic tube in a spiral formed shape and wherein a spiral formed heating wire is wrapped around a central ceramic conduit located in a center of the ceramic tube.
A method of manufacturing a ceramic conduit or a ceramic tube for a handheld, portable electrical hot air device, comprising:
- a) mixing the materials in the ceramic composition together,
- b) placing the mixture in a mold,
- c) treating the mold in a kiln in a first burning at 200-300° C. for 20-40 minutes, and
- d) treating the mold is in a second burning at 1500-1700° C. for 20-40 minutes;
- wherein the hot air device comprises an electrical heating element and a fan for inducing an air stream to pass the heating element, wherein said heating element comprises the ceramic tube, the ceramic conduit located in a center of the ceramic tube, and a spiral formed heating wire wrapped around the ceramic conduit.
A hot air device, comprising:
- an electrical heating element and a fan for inducing an air stream to pass the heating element,
- an accumulator for powering the heating element and the fan, and
- an Electronic Control Unit (ECU),
- wherein said ECU is configured to provide a Normal Ignition Cycle in which the fan and the heating element are operating simultaneously during an Ignition Step which continues for a set time interval, and a Blowing Step in the Normal Ignition Cycle which follows after the Ignition Step, and
- wherein said Blowing step includes setting an electrical effect of the heating element to be lower than in the ignition step while the fan is still operating.
Dependencies are inferred from the claim text.