FR2779329A1 - Electro-pneumatic hair dryer for professional hairdressers - Google Patents

Abstract

The hair dryer has the motor separated from the air delivery unit. The air is delivered from an external blower, which may supply several delivery outlets at once, supplied through flexible tubes. The delivery unit houses an electric resistance heating element (5) supplied through a flexible power cord. The air resistance has a pneumatic safety switch (3) to prevent overheating.

Description

/ '2779329

DESCRIPTION OF THE HAIR DRYER

  Lightening of the hand-held device by eliminating the electric motor.

  The present invention relates to an apparatus of a new concept, intended for the use of a hair dryer, intended mainly but not exhaustively for the clientele of hairdressing professionals, and more broadly to

that of the general public.

  Until then, traditional hair dryers, whether hand or standing in the form of a helmet, had an electric motor propelling air

on a heating resistor.

  The major drawback of such a system being mainly with regard to the hand dryer; the weight, and with regard to the floor dryer or

  helmet, as well as the hand dryer; the noise generated by the engine.

  The new concept, proposed within the framework of this patent is precisely to eliminate these two drawbacks, thus bringing to professional users

  as well as their customers, a new comfort.

  It is a hermetic shell in molded plastic (Fg A / 1) or in any other material allowing to give this device an ergonomic shape facilitating the ideal preemption, which shape could resemble that of a pistol, on the classic model of hair dryers currently available on the market This shell is airtight except at its end or it is provided with an orifice called "mouth>" This shell has a handle provided with an orifice at its base (Fg NA / 6) intended to receive a compressed air supply pipe, of two other orifices in its middle at the level of the positioning of the index finger of the hand intended to receive an electro pneumatic switch and a push button returning to the position as soon as it is released, the function of which is to interrupt by disconnecting the power supply from the resistor. (FgA2 / 3) The top of the handle, which connects the handle to the barrel of the dryer, is provided with a funnel-shaped connection called "air distributor (Fg A4) at this point the system is provided with sound absorbers, This part made up of a set of fins is connected or not to the exit of the push button, it allows the widening and the distribution of the air beam whose arrival is controlled by

  the handle located on the handle.

  The barrel of the dryer receives one or more conventional electrical resistances which allow the air passing through it to be heated. (FgA5) This new concept of pneumatic electro-type device, leads to

following innovations.

  - Absence of ventilation holes in the plastic shell of the dryer, which is not

  more openwork since there is no engine to cool.

  - Significant reduction in noise (not measured to date), on the one hand because of the suppression of the engine, on the other hand by that of all moving parts to

  inside the gun shell.

  The pressurized air produced by a compressor or blower adapted to the installation of the professional concerned (depending on the number of styling stations), is conveyed by suitable ducts designed to receive and

  keep the air pulsating or under pressure, up to the hairdressing station.

>: L 2779329

  The hair dryer connected to the hairdressing console is by a double electro-pneumatic connection. Once connected to the console, the dryer is under pressure, it is equipped with a flow or air pressure adjustment device. (Fg A 7/8) to use the device, all you have to do is release the air in the "air distributor" by pressing the electro-pneumatic switch at the touch of a finger. This movement activates the electrical resistance by the simple contact of the button on the wires which feed it; this avoiding any risk of overheating

  The device can be fitted with a rheostat.

  The attached drawing illustrates the invention: FIG. A shows the various elements in section constituting the new prototype of the electropneumatic dryer The plastic shell (FgA / 1) whose shape recalls that of conventional dryers has as major difference the absence of holes d 'aeration

  normally intended to cool an engine in action.

  It also has an orifice at its base which allows the supply of air and electricity (FgA / 6) The air intake pipe is held in its center by a partition, which ensures the sealing as well as its keeps in place From the consoJe, the hose is connected to the dryer by quick connection sockets. The air inlet is then connected to the air distributor (Fg A / 4) also called air distribution part. the role is to burst the compressed air beam while distributing it over the electrical resistance (s). The immobility of this part avoids the noises that would generate a moving part like a propeller or a turbine Many solutions exist to ensure the distribution function

air in the dryer body.

  The air thus distributed then passes over one or more resistors, '(Fg A / 5) (straight, star, tubular, helical) which heats it until it leaves The ignition of the resistor (s) is coupled with the air outlet; this action is ensured by the electropneumatic switch (Fg A3) which performs both functions at the same time, in order to avoid any risk of overheating, however a push button allows the switching off of resistance in order to allow only cold air to pass at the operator's request

3, 2779329

Claims (4)

  1-Device for use as a hair dryer in the form of an airtight shell except at its end called "mouth", supplied with a flow of air from an external source (compressor or blower), provided a power supply and provided with one or more resistors to heat the air passing through it 2- Device according to claim (1) characterized in that it combines a compressor or a blower with a hair dryer in order to supply in the air this   last without the help of an integrated electric motor.   3- Device according to claim (1) characterized in that it comprises a hermetic housing provided with an outlet orifice called "mouth" (Fg A / 9), an orifice to let in a power cord in air and electricity to supply the device, (FgA6), an air distributor as well as an orifice intended to receive an electro-pneumatic switch allowing to release the air, and a push button allowing disconnect the power supply to the resistors. (Fg A2 / 3) 4 - Device according to claim (3) characterized in that it comprises a pressurized air inlet pipe, (FgA / 7) provided with a device for adjusting the flow rate or pressure of air (FA / 8) fixed inside the hull, connected to an electro pneumatic switch, at the place where it ends inside the dryer body. Outside, the hose is connected by quick connection sockets, both to the dryer and to the styling console. The dryer will thus be made independent   thus allowing to change it if necessary.   -A device according to claim (3) characterized in that it comprises an electro-pneumatic switch (FgA3) which makes it possible to release the air under pressure; the action of the latter triggers the activation by contact of the electrical resistors, at the same time as it releases air in order to avoid overheating of the dryer. The push button located just below the switch allows to disconnect the power supply from the resistors, even when the switch is   engaged so as to obtain no longer hot air but cold air.   6-Device according to claim (3) characterized in that it comprises an air distributor thus called, by its function intended to widen the beam from the outlet of the pipe in the body of the dryer (FgA / 4); it includes a series of fins arranged in the body of the dryer, the arrangement of which is intended to ensure the best distribution of air over the resistances which will heat it   7-Device according to claim (4) characterized in that it comprises.   electric resistances which are placed in the barrel of the dryer (FgA / 9) in order to heat the air which crosses them