Hair dryer having a passive silencer system
AssigneeTechnofirst
InventorChristian Carme
Life of this patent
Estimating the term…
Abstract
The invention relates to a hair dryer including a tapered plastic shell between a rear end and a front end through which flows out the air set into motion and heated by the hair dryer, this plastic shell defining at least one air inlet and an air outlet and being intended to accommodate at least one motor and one fan, the shaft of which is borne by an attached internal structure in the central portion of the fuselage. According to the invention, the plastic shell is conformed in order to receive the air between the air inlet and the internal structure bearing the fan, on a longer acoustic path as compared with the length of the acoustic path between the rear end and the internal structure bearing the fan.
Claims11
A hand-held hair dryer comprising:
- a tapered plastic shell comprising:
- at least one air inlet,
- a front end comprising an air outlet and configured to be directed towards the hair to be heated,
- a rear end,
- at least one fan comprising a shaft borne by an internal structure of the shell and attached in a central portion of the shell,
- a motor to drive the fan, and
- heating means arranged in the air path between the air inlet and the air outlet,
- wherein the fan brings in air from the at least one air inlet and expels heated air out through the air outlet, and
- wherein:
- all of the air expelled through the air outlet flows a distance between the air inlet and the internal structure bearing the fan such that it is greater than the physical distance between the rear end and the internal structure bearing the fan.
Dependencies are inferred from the claim text.