FR2778823A1 - Hand-operated portable rapid drying hair dryer - Google Patents

Abstract

The hair dryer has a means permitting combined or alternate use of hot air blowing and suction, by propelling or sucking in air through the same interface with respect to the head of the user, the rapid evaporation of water at hair level and the evacuation, simultaneously or not, of all produced vapor. The hair dryer has a means permitting combined or alternate use of hot air blowing and suction, by propelling or sucking in air through the same interface with respect to the head of the user, the rapid evaporation of water at hair level and the evacuation, simultaneously or not, of all produced vapor. The dryer has a body (6) and enclosure (19), an air production unit, including a heater (2) and a motor (3) associated with a fan, a removable cover (13) with several types of openings, e.g. holes (14), into which pass the teeth of a round comb (10), air passage holes (15) used as a filter function (16) during suction, a rapid operation air flow inverter, a control unit, a system for immobilizing and removing the control operation and a safety system for positioning and control of the cover (13) and/or accessories for switching out the device.

Description

FAST HAIR DRYING APPARATUS FOR USE BY HAND,

  RESPECTING THEIR CONSTITUTION AND THE ENVIRONMENT OF

THE USER.

  The hygienic habits practiced in modern societies lead to a need for cleanliness resulting in a daily cleansing of the body and frequent washing of the hair; Natural drying, in the open air of the latter requires a significant time, but time having become one of the main dimensions of life, man has created different devices to make this operation shorter and possibly more complete if accompanied of special conditioning of the hair:

  coloring, perm, treatment, etc ...

  It is known that to quickly evacuate the water present in different states in a natural fiber, such as a hair for example, it is necessary to improve what has been observed in nature, that is to say that the drying more Rapid after rain results from the combination of the reappearance of the sun and gusts of wind. The more the sun

  is hot and strong wind, faster is the result.

  To reproduce these phenomena artificially, two types of apparatus are used above all. These are: * First type: dryer helmets They proceed by blowing hot air inside a helmet partially enveloping the head. The air flow is directed from the top of the skull, and therefore from the helmet, to the chin; along its course it takes care of the humidity produced by evaporation

  water in the hair which is drawn outward.

  These devices have gradually gone out of fashion because although they respect the constituents of the hair and allow easy shaping on accessories such as rollers, they do not meet the criteria of speed and practicality currently required. They can hardly be improved because the space envelope of the head, between the skin and the walls of the helmet conditions the air temperature, which to avoid heat stroke can not be very hot. In the same way the air speed cannot be very high because of the noise and unpleasant sensations which can be felt on the skin * Second type: hair dryers Of all shapes, all sizes, powers or colors, they are become the common means, present in all homes, of drying the hair. They proceed by spraying the hair, always in the same direction, with a jet of air more or

less hot, quick and concentrated.

  Their advantage lies above all in the practicality because, moreover, they have many drawbacks, one can cite: - Those linked to the temperature of the air flow: At Risk of burns At high thermal shock on the hair which can eventually lead to a

  deterioration of its constituents or scalp problems.

  Difficulty regulating the flow temperature.

  It is these drawbacks that require these devices to be kept to a certain

  head distance to limit risk.

  - Those related to the speed of the hot air flow Imprecision of the place of drying * Dispersion of the hair under the power of the breath 20. Dispersion of the calorific energy produced. It is known that according to the models only 5 to 20% of the initial power is used for the vaporization of water * High noise nuisance To limit these drawbacks, various means have been devised, including the creation of accessories to be placed at the end devices, aimed at making drying more homogeneous. It has been produced, for example, nozzles for concentrating or diverting the flow, or also nozzles comprising combs or solid or hollow toothbrushes making it possible to bring the output of the fluid closer, thanks to the screen which they represent. hot air relative to the scalp. However, none of these accessories provides a really effective solution to truly reduce the drying time without

alter the quality.

  The conditions for good drying are as follows: To dry a hair well, it must be brought to the temperature as quickly as possible to cause, first, the evaporation of the film of water which envelops it, then that of the residual water which permeates it and which is trapped by its shell structure. To cause this evaporation it is not necessary to bring the hair to high temperature: between 25 and 60 C is enough. What is important is to obtain the best possible ratio between the speed with which a certain quantity of water vapor is produced locally, and the speed at which this same quantity is evacuated

in full.

  This evacuation of moisture is directly linked to the way the air flow intended to entrain the vapor, circulates around the hair. The closer it is to the hair, the more enveloping it will be for maximum surface area, the more constant it will be.

  in position and the better the speed of drying.

  It is obvious that the current hair dryers are still far from filling

perfectly these conditions.

  * The object of the invention is to overcome the drawbacks of known means for drying the hair, while making it possible to better respect it, to shape it, and

  possibly apply treatment products to it.

  * The principle of the invention is based on a new concept of hair drying, air blower (PULS'HAIR) proceeding by combined or alternating use of a blowing of hot air, to evaporate the water at the level of the hair, and with sufficient suction to evacuate all the vapor produced instantly. In the case of alternating use, this can be adjusted at the user's discretion between

  a few seconds and several minutes.

  The principle of using a drying associated with a suction is already known, since any drying with hot air requires a drawing of air, taken from the environment by suction and warming up on contact with a source heating, before restoring towards the object to be blown dry; This constitutes the

  basic operation of all hair dryers or dryer hoods.

  Around this basic principle have been created different concepts or devices aiming to use the aspiration in a more specialized way, essentially for the shaping of the hair or its treatment. It is thus known a certain number of creations which we examined, but which are open to criticism compared to the various criteria of s practicality, speed, economy of construction, ergonomics, respect for the environment,

  quality of the result, which are obtained by the apparatus which is the subject of the invention.

  We can cite in a non-exhaustive way some of the patents relating to this subject: - Patent FR - 2 381 489 - BRAUN It relates to a hair dryer of tubular shape whose central part acts as a handle. It has many practical drawbacks, linked to the grip by a part of the device rising rapidly in temperature and to an inversion which is not very easy in use, in the case where one would like to use the suction side for the

  drying of a lock of hair or of the entire head of hair.

  - Patent FR - 2 392 647 - MARSHALL JOHN HALL It describes a compartmentalized piece of furniture, allowing the use of a classic hair dryer which can be transformed by means of a few arrangements provided for hand dryers or steam diffusers; in the latter case the suction is used to introduce a volatile product, disposed near the air inlet of the device, into the flow

  propelled towards the outside of the cabinet.

  - Patent FR - 2396526 - ATOMELEC Refers to a device extrapolated from a mini vacuum cleaner with part for recovering the aspirated products. It concerns the treatment and maintenance of the hair and scalp by brushing and extracting dandruff and cannot be considered as a means of

practical drying.

- FR patent - 2 435 925 - DROIN.

  This patent describes an apparatus making it possible to operate in successive phases: first drying the hair using a hot air outlet located on one side of the body of the apparatus, then shaping the dried hair on a winding device, of a type of use similar to that of known styling rollers and located on the side

opposite of the camera body.

  Its use calls when one wants to form a lock of hair to an irrational placement of it in the winding device, through which one can circulate either aspirated air or partially recycled air warmed up,

  which leads to long and complicated manipulations.

  In addition, we can note a complex construction causing very high losses.

  of charges making the device ineffective and a high manufacturing cost.

  s Patent FR - 2 504 250 BLAIZAT It concerns the integration in a hair dryer of a means of drying for

  obtain hot air free of humidity before spraying onto the product to be dried.

  Patent FR - 2 530131 - HERZOG and FR - 2 568 358 L'OREAL They apply to dryer helmets type configurations and cannot

  extrapolate to manual hair dryers.

Patent - FR - 2,533,424 - GARBO-SNC

  He claims the shaping of the hair strand by strand, by introducing those

  ci, by an air suction effect, in a pipe which is then tilted to use its end edge in order to carry out a friction forming during the extraction of the wick. This way of doing things is slow, impractical and ineffective because proceeding cold, strand after strand, and on a hair not stretched, which limits the effect of

  friction applied to obtain a permanent curvature of the hair.

  * Analysis of the cited patents shows that none of the devices described makes it possible to have a set of results and advantages equivalent to the subject of the invention which

  is proposed and which meets the following description:

  A base of hair dryer type is used to achieve the desired results, by arranging it so that, for alternating use, for example, the direction of flow can be changed, by reversing the direction of rotation of the propeller. , or combination of several propellers rotating in the same direction, and that the air flows generated in one direction or the other are channeled so as not to cause any discomfort

of the user.

  Switching from the hot air blowing function to the suction function must in this case cause the operation of the source producing

heat.

  Many constructions of apparatuses are possible to implement

the means of the invention.

  We will describe one, below, without being exhaustive and without mentioning the known devices usually affected in hair dryers.

  thermal or electrical insulation between components.

  The device which is the subject of the invention chooses a 230V supply

  used by parallel connection of a motor and a heating element.

  The functions to be obtained are: - A supply air with motor turning in one direction and the heating element switched on (Plate 1/6) - A suction with motor rotating in opposite direction and the heating element switched off (Plate 2/6) This device is composed of the following elements: (Figure 1, Plate 1/6) * An air production group - 1 - heated or not, including:

- A heating element - 2 -.

  - A motor - 3 - fitted with an output shaft - 4 - on which is mounted so

  fixes a propeller or a turbine, in the example a propeller - 5 -.

  * A central body - 6 - arranged to allow the air circulation to be organized according to the desired use. It is therefore provided with different openings:

  - Side openings - 7 - evenly distributed around its periphery.

  - Front openings - 8 - in the form of almost triangular petals whose axes converge towards the axis of the engine. Each pair of apertures 7 - and - 8 - is located in the same axial plane. We will note an angular step oc between two pairs

  successive. The sum of the respective areas of the openings - 7 - and 8 -

  should be substantially identical.

  - An opening - 9 - fitted at the periphery in an area opening into

the connecting branch - 6c -.

  The central body - 6 - carries the following elements:

  - The components of the air production group - I -

  - The various hairdressing accessories that can be supplied with the device, such

  for example a round comb with short teeth - 10 -.

  These accessories will be provided to be easily mounted or dismountable by a known system, in our example, by a bayonet system coming to be caught in notches - 11 - provided on the cylindrical body - 6a -. All these accessories must be provided with passages allowing the circulation of the air flow in one direction or the other, such as for example the holes -12 provided in

the round comb 10 -.

  * A removable cover - 13 - provided with several types of orifices:

  - Holes - 14 - allowing the teeth of the round comb to pass through - 10 -

  - Openings - 15 - allowing the air flow to circulate. These openings are sufficiently numerous but fine so that their assembly constitutes a filtering grid - 16 - preventing the penetration of hair or small debris during the use of the suction function, this without creating a pressure drop detrimental to the proper functioning. It will not be possible to remove the cover and / or the accessory without causing the appliance to stop immediately. There will be a connection between the dismantling system of the removable cover - 13 - or of the round comb - 10 -, illustrated in our case by the rod - 17 - and a control of the general supply circuit of the device by

  example of a safety switch - 18 -.

  In certain cases, for example to constitute special styling accessories, the filtering grid - 16 - can be incorporated directly into the accessory. This cover and / or the adaptable accessories on the device are oriented towards the hair to be dried and are therefore traversed by the air flows, both in suction

than blowing.

  * A closing box - 19 - located on the side opposite the accessories. Can be dismantled without using a tool, it closes the central body - 6 - and puts the equipment

  electric out of reach from the outside.

  It is similar in construction, function and use to identical devices known in hair dryers and has the perforations 20 -, useful for its

  job, allowing air circulation through its thickness.

  * A flow direction reversing device which consists of: - A flow direction selector - 21 - consisting of a cylindrical part partially obstructed by a conical front end intended to allow the distribution of the flow as it is blown or vacuumed. To allow this distribution, this flow selector - 21 - has different orifices (Figure 2, Plate 2/6) Lateral orifices - 22 - evenly distributed on its periphery, at intervals

  angular oc, identical to that between the openings - 7 - and - 8 - of the central body - 6 -.

  Front orifices - 23 - in the form of almost triangular petals whose axes converge towards the motor axis - 3 - and exactly superimposed on the openings

  frontal - 8 - of the same shape of the central body - 6 -.

  If we consider the angular step cc between two identical orifices - 22 - or -

  23 -, the latter will be offset relative to each other by the angle c / 2 - An actuating tab - 24 - which can freely debate in the opening

- 9 - from the central body - 6 -

  The flow direction selector - 21 - is mounted in the cylindrical part 6a - of the central body - 6 - in such a way that it is free to rotate, but with a minimum of play at the periphery, the actuating tab - 24 being disposed through through the opening - 9 - so that it can be put in contact with: A control device for right and left handed comprising: - A push lever - 25 - comprising a push part 25a - passing through the

  link arm - 6c - in order to be visible and accessible from the outside, an eyecup - 25b -

  and a notch - 25c. This push lever - 25 - is permanently subjected to the thrust of a spring - 26 - tending to return it to the original position, as soon as it

  moves. It can pivot freely around a fixed axis - 27 -.

  - A "Microswitch" - 28 -

  - A return - 29 - fitted with 2 return fingers - 29a - and - 29b -. I1 can rotate

  freely around a fixed axis - 30 -

  - A push rod - 31 - which can slide freely in the handle 6b -.

  It has at one of its ends a pusher part -3 crossing the link arm - 6d - in order to be visible and accessible from the outside. The other end forms

a fork - 3 b -.

  - An electrical device - 32 - for general operation comprising 3 switches il, i2, i3 controlled simultaneously, and connected to the control device so that any movement of the push rod - 31 - or of the lever

  button - 25 - is transmitted to it and positions it for one or other of the functions.

  The relative position of these parts between them is as follows

  The eyecup - 25b - traps the end of the actuating tab - 24 -

  The notch - 25 c- surrounds the return finger - 29a -

  Fork - 3 lb - surrounds the return pin - 29b -

  The actuating tab - 24 - crosses the cylindrical body - 6a - by

  the opening - 9 -. It allows the flow direction selector to be rotated 21-

  The lateral parts of the opening - 9 - of the central body - 6 will serve as a stop for the angular movement of the actuating tab 24 -, this movement cannot be

  greater than the angle aoc / 2 half the angle oc previously defined.

  o0. A system for immobilizing, or releasing, the control system described on page 6 lines 26 to 31, and which consists of: - A rocker - 33 pivotally mounted at the end of an auxiliary arm - 31c - of the rod

  push button - 31 -. Its rotation is limited clockwise by a stop - 34 -

carried by the arm - 31 c -.

  - A compression spring - 35 - mounted in a cage - 36 - provided in the handle - 6b - It exerts its thrust from the fixed bottom of the cage 36 - towards the

  rocker - 33 - on which it is centered by the pin - 37 -.

  - Two stops materialized by the walls of the cage - 36 -:

  - An immobilization stop - 38 -

- A release stop - 39 -

- Hanging opening - 40 -

  * Ergonomics, aesthetics and general functional form of the device, object of

  the invention is given, excluding accessories, by the assembly of the closure housing -

  19 - with the central body - 6 -, to form a homogeneous whole grouping its

  means of action and its original means of gripping.

  They are characterized, by defining themselves with respect to the plane P in which the propeller rotates, by: - A cylindrical body - 6a - of greater or lesser diameter, containing the active members, and perpendicular to the plane P - A handle - 6b - located in a plane parallel to P, it has its main axis not intersecting with the central body - 6 - and is arranged so that a space E

  remains formed between the cylindrical body - 6a - and its own external shape.

  This space may or may not be closed. If kept open it should allow

  the passage of the fingers between the cylindrical body - 6a - and the handle - 6b -.

  The handle - 6b - incorporates an anti-rotation function due to its shape, its section will be between rectangular or oval envelope lines, elongated or flattened. It contains the electrical device for general operation - 32 In the construction shown, the connection between the cylindrical body - 6a - and the

  handle - 6b - is provided by two link arms - 6c - and 6d -.

  It will be possible to obtain aesthetic variants without compromising the ergonomics of the product by having only one link arm which can be kept on one side only, or placed in the central position (see apparatus diagrams nl and N 2 Plate 3/6), making sure to keep a right / left handed use. The amendment and the new provision

  internal control parts remaining within the reach of ordinary skill in the art.

  This arrangement between the main components allows easier handling, near, around, and outside the head and hair to be dried by

  the device. This compared to known hair dryers.

  Description of the recommended handling methods for this device

  does not exclude more traditional and known employment, but less efficient in ergonomics

  "pistol" type handles used in current hair dryers.

  * The comfort of use of the device which is the subject of the invention, in relation to the ambient environment will be characterized by: * For the central body 6 - and closure box - 19 - a construction adapted to the emission limitation of sound waves, in particular by the absence of sharp angles on the path of the air flow and an embodiment of the envelope walls with respect to the exterior, in thicknesses between 2 and 6 mm., these walls being , depending on the materials chosen, single-component or multi-component, in a layer or multi-layer, use will preferably be made to obtain the bi and / or tri-material injection technologies, or surface coating processes. We will complete the effectiveness of these arrangements by providing the inner surface of these enveloping pieces with mini volumes known to constitute reverberating sets trapping sounds, for example: diamond points - 41 -, or lines

  waves, or tiled shapes, etc ...

  For the entire device, an external surface that is particularly pleasant to the touch, defined by sensory analysis methods, and characterized by a definition of contact surface with the skin of maximum roughness class included.

  between NI and N3, corresponding to Ra between 0.025 and 0.1 Pm.

  * The device which is the subject of the invention can be used with accessories.

  In addition to those, usual with known hair dryers, it may be provided with specific accessories giving it particular advantages, such as imparting styling power to their part in contact with the hair. We could create, for example, a dual-function nozzle - 42 - (Figure 4, Plate 3/6) comprising: - For blowing, a narrowing air concentrator - 42a - terminated by two lateral bars - 42b joining together combing teeth - 42c -, and comprising at regular intervals connecting bars - 42d -, these being intended to prevent the penetration of the hair in the event of involuntary actuation of

aspiration.

  - For suction, at each end of the concentrator constriction 42a -,

  an elastic clamp - 42e - turned towards the inside of the end piece - 42 -.

  This elastic clamp is intended to receive by clipping the lug - 44a of the combing grid - 44 - so that the latter comes to bear against the connecting bars - 42d -. We can play on the side - h - of the combing grid - 44 - and on the

  length of its teeth - 44b - to obtain different styling effects.

  The characteristic of this dual-function tip - 42 - is to integrate into each of the side bars - 42b - hot ingots - 43 - which can be: Either masses heated by the flow of hot air during drying to

  restore the calorific energy stored during the aspiration.

  Either active heating elements of the resistance type, CTN or CTP self-regulating ceramic preferably, electrically connected, by plugging in

  safety for example to the electrical circuit of the device.

  For more conventional use, the end of the concentrator constriction - 42a - may be provided with shapes integrating the safety grid necessary for the suction function, for example (Figure 5 and 6, Plate 3/6):

  - A rounded cap - 45 - with holes - 46 - and wide teeth 47 -

  - A brushing comb - 48 - with a fine grid with fine holes - 49 - and several

rows of short teeth - 50 -.

  Except in the case of a construction requiring an electrical connection, the dual-function nozzle - 42 - will be orientable 360 around the axis of the cylindrical body - 6a - on

which it is clipped.

  "The device which is the subject of the invention described in the preceding pages operates in the following manner": After being energized by an on / off switch, the energy reaches the electrical device - 32 - for general operation, its distribution is done as follows: * In the blowing position (Plate 1/6) - it - energizes the supply circuit of the heating element - i2 - and - i3 ensure that the motor is energized, - i2 - switching

  the arrival and - i3 - the return of the current.

  * In the suction position (Plate 2/6) - it - cuts the power to the heating element - i2 - and - i3 - ensures that the motor is switched on, - i3 - switching the supply and - i2 - the return . The polarity of the motor running is reversed

reverse.

  By construction, this position is that where the pusher parts - 25a and - 31 a -

  are raised in relation to the outside of the device. They are held in position

  by the action exerted by the spring - 26 - on the entire control device.

  The microswitch - 28 - can possibly be substituted for - it - if it allows a better sensitivity to the cut of the power supply of the heating element; it's a

choice of construction.

  * Operation in the blowing position Positioning the electrical device - 32 - starts the engine in the blowing direction and supplies the heating element, the user pushes in the parts

pusher - 25a - and / or - 31a -.

  The push slides the push rod - 31 - and / or rotates the push lever - 25 -. These two parts are related to each other by the return - 29 -, any action exerted by the fork - 3 lb - on the return finger - 29b - and / or the notch - 25c

  - on the return finger - 29a - causes the rotation of the return - 29 -.

  The push rod - 31 - comprises an auxiliary arm - 31c - supporting a system for immobilizing, or releasing, the controls operating as follows:

  At the start of the action on the pusher parts - 25a - and - 31 la - the rocker -33-

  is in the support position on the immobilization stop - 38 -, the thrust it receives from the top of the spring - 35 -, centered on the pin - 37 -, tends to rotate it counterclockwise around of its axis of rotation. The direction of this thrust is the same as long as the axis of the pin - 37 - remains on the same side with respect to the median plane containing the axis of rotation of the rocker - 33 - and the axis of the base of the spring - 35 - in support on the bottom of the cage - 36 -. The action continuing, the stop - 38 - pushes on the side of the

  rocker - 33 - in contact with it, causing it to rotate.

  By turning, the pin - 37 - moves the top of the spring - 35 - As soon as its axis has

  1 5 clearly crossed the median plane, the direction of thrust of the spring - 35 on the rocker -

  33 - reverses, it pivots clockwise until it comes into contact with the stop -

  34 -. The rocker - 33 - can engage in the hooking opening 40 -. The release of the pressure on the pusher parts - 25a - and 3 la - releases the stress on the spring - 35 -, this pushes the rocker - 33 - until it meets the edge of the hooking opening - 40 - against which he stops. The controls are then locked in the blowing position. Their actuation and their blocking made pivot the push lever - 25 - around its axis - 27 -, this movement put in stress the spring - 26 - whose direction of thrust applies opposite to this rotation L 'eyecup - 25b -a therefore exerted an action on the end of the actuating tab - 24 - which it traps, the flow direction selector - 21 - which carries the latter has moved around its axis of an angle ac / 2 until it comes into abutment against one of the sides of the opening - 9 -. The front orifices - 23 have come to superimpose on the front openings - 8 - of the central body - 6 -, at the same time as the solid parts located between the lateral orifices - 22 - have obscured the

  side openings - 7 - located on the periphery of the central body - 6 -.

  The flow of hot air from the air production group - 1 - can then circulate freely by entering through the perforations - 20 - of the closure box - 19 - and out through the holes - 12 - of the round comb 10 - and the openings - 15 - of the

filter grid - 16 -.

  e Operation in the suction position Switching to the suction position is done by changing the position of the electrical device 32 - which cuts the power to the heating element from the start

  of the movement of the controls and reverse the direction of rotation of the motor.

  To obtain this result, it is necessary to press one or the other, or the two push-button parts - 25a - and - 3 la - with a more energetic impulse than for setting the blowing position. This stronger action on the spring - 35 - allows the rocker - 33 to penetrate further into the cage - 36 -, it can descend until it meets the stop

  release - 39 -, which makes it pivot around its axis and moves the pin - 37 -

  on the other side of the median plane. The spring - 35 - completes the tilting.

  As soon as the pulse ceases, the entire control assembly can move under

  the joint action of the springs - 26 - and -35 -, without encountering any obstacle the rocker -

  33- passing in front of the hooking opening - 40 -, and returning to the suction position. All the operation of the controls described on page 13, line 6 to pagel14, line 2 is reversed, and the flow direction selector - 21 returns to the initial position until its movement is blocked by the stop of the tab

  actuation - 24 - in the opening - 9 -

  In this position, the solid parts of the front conical bottom located between the front holes - 23 - obscure the front openings - 8 - of the central body - 6 - while the side holes - 22 - are aligned exactly opposite the

  lateral openings - 7 - of the central body - 6 -.

  The sucked air can no longer circulate to exit through the perforations 20 - of the closure housing - 19 -; it is deflected to be ejected on the sides of the device,

  passing through lateral openings - 22 - and openings - 7 -.

  * Function of the filter grids and accessories mounted on the device: - Round comb with short teeth - 10 - and removable cover - 13 -: The round comb with short teeth - 10 - can be mounted alone in blowing function, subject to conditions that its dismantling, even accidental, actuates the safety switch-I 8-. It allows combing simultaneously with blowing, especially in

long hair in mass.

  In suction, the removable cover - 13 - must be used to accompany the round comb with short teeth - 10 - for two reasons: s5 It has a grid with finer holes which makes it possible to stop all debris,

  dandruff, broken hair, and the like, extracted from the hair by suction.

  It can be extracted from the teeth by carrying all its dirt on its smooth surface, and therefore allows easy cleaning of the comb and the grid. This removable cover - 13 - can be mounted alone for certain uses, but its dismantling must

  activate the safety switch - 18 -.

  -Bi-function nozzle - 42 - and combing grid - 44 - (Figure 4, Plate 3/6): - First function, in blowing: In addition to the use for drying hair, we use the flow of hot air for heating side bars - 42b - representing large areas of the air concentrator - 42a -. To improve their heat capacity, one of the original features of the object of the invention is to give these bars the possibility of staying hot for a long time or of being heated independently. This will be done by overmolding in the lateral bars of ingots - 43 - made of a material with high thermal inertia, or by inclusion of self-regulating heating elements.

  CTP type or conventional resistors.

  Thus equipped with the dual-function nozzle - 42 - can fulfill its second function - Second function, in suction: (Figure 3, Plate 3/6) Suction after installation of the combing grille - 44 - by clipping in elastic pliers - 42 e- is concentrated on a reduced surface. The depression caused is sufficient to ensure that the locks of hair are pressed against the hot side bars - 42b - and the central edge carrying the combing teeth of the grid.

combing - 44 -.

  By circulating the dual-function tip - 42 - cold, but above all hot, on damp hair strands we create a natural waving or curling effect, which

it is fixed by drying.

  The fineness of the holes of the combing grid - 44 - is sufficient to stop debris or hair entrained by the suction, and cleaning is very easy by

  the removal of this grid, which makes the teeth very accessible.

  When using more conventional end caps (as illustrated in Figures 5 and 6 - Plate 3/6), the suction vacuum also presses the hair against its surface, but the styling effect is more weak because no

  accentuated by the presence of hot surfaces.

  The apparatus, object of the invention as it has been described, corresponds to one of the construction possibilities offered by this new concept of drying the hair, using alternating hot air blowing or combined with suction, c 'is that

  which seems to correspond to the best use we can make of it.

  However, the same inventive unit can be applied to variants depending on whether simpler and therefore more economical constructions are desired, or whether certain disadvantages of use are accepted. For example: A device according to a Variant - 51 - of the device that is the subject of the invention (Figures 7 and 8, Plate 4/6): It can be created on the same construction bases, identical:

  - The air production group - 1 -

  - The removable cover - 13 - with a round comb.

- The closing box - 19 -

  - The device for immobilizing or releasing orders.

  The other constituents being modified in order to have a device whose reversal of direction of flow is obtained by reversing the pitch of the propeller.

  modified correspond to the following description:

  * Electric controls: The motor does not change direction of rotation, it is enough for the system

  electric on / off switch - i4 -, microswitch - 28 -

  controlling or not controlling the supply of the heating element, and of the switch

  safety - 18 - controlled by the rod - 17 -

  * A supporting body - 52 -: With an external shape and size identical to the central body - 6 - it consists of an external wall - 52a - and an internal cage - 52b - connected together by bars - 52c and - 52d -, arranged at regular angular intervals, of

  preferably every 45 or 60, like the spokes of a wheel.

  The air circulation will be parallel to the central axis of the carrier body -

  52 -, without obstacle, except in a sector oriented on the handle side, where the space included

  between two successive bars - 52d - will be partially filled by a partition - 53 -

  carrier of the propeller pitch reversal device.

  e A variable pitch propeller - 54 - consisting of:

  - A blade support - 55 - bowl-shaped, centered and mounted on the axis - 4 -

  of the motor. It includes a number of crossings - 55a - in which are

  installed trunnions - 56 - consisting of a flange - 56a -, an axial part -

* 56b- passing through the crossings - 55a -, and a part in the form of a crank - 56c -

  The number of bushings - 55a - corresponds to the number of blades desired.

  This blade support - 55 - further comprises a hub - 55d - provided

  outwardly of splines - 55 e -.

  - Propeller blades - 57 - mounted and immobilized by their hollow core - 57a on the axial parts - 56b - in such a way (see partial section A, Figure 7) that the start of the part of the blade - 57 - located around the hollow core - 57a - either in the same plane as the crank-shaped part - 56c - and shape with respect to the plane P

  general in which the propeller turns - 54 - an angle 3.

  * A propeller pitch reversal control device comprising: - A trigger - 58 - which can pivot around an axis - 59 - rotating in a

  support leg - 53a - from the partition - 53 -.

  - A walkman - 60 - sliding freely and without play, on the splines - 55 e -

  of the hub - 55d -.11 has two circular grooves - 60a - and - 60b -.

  It is made of a material with a low coefficient of friction, in PTFE for example.

  * An elastic fork - 61 - in spring steel connected: - On the one hand to the trigger - 58 - by its handle - 61a - on which it

  is crimped by rivets - 58a -.

  - On the other hand at the throat - 60a - of the player - 60 - by its fork - 61b -

  that surrounds the bottom of this gorge. Each end of the legs of the fork will be arranged to form rounded pads - 61c - coming into contact with each other and

  else against the sides of the throat - 60a -.

  * A system for immobilizing or releasing commands, connected to the trigger - 58 - by an arm - 58a - issuing therefrom, identical to that already described on page 9,

  lines 9 to 20, and operating as already explained on page 13, lines 6 to 24.

  The device, object of the variant - 51 - operates as follows: - In the suction position (Figure 7, Plate 4/6) After switching on by the on / off switch -i4 -, and the Microswitch switch - 28 being in the open position therefore not supplying the element

  heating, the engine turns, driving in its rotation the propeller - 54 -.

  Each propeller blade - 57 - mounted in the bushings - 55a - is maintained in the suction position, characterized by the angle 1 which it makes with the Plan P, thanks to the end in the form of a crank - 56c - of the journal - 56 - engaged in the

groove - 60b - of the player - 60 -.

  The whole is held in position by the thrust of the spring - 35 transmitted via the rocker - 33 -, the trigger - 58 -, and the fork handle - 61a - to the fork - 61b -; the pads - 61c - which the latter carries at each end hold the player - 60 - in its position furthest from the motor corresponding to

  aspiration. To reduce friction of the pads - 61c - against the side of the throat -

  a - concerned, these could possibly be replaced by rotating rollers.

  Air can therefore circulate by entering via the removable cover side - 13 fitted

  of its comb and come out on the closing box side - 19 -.

  - In the blowing position (Figure 8, Plate 4/6)

  To switch to the blowing position, you must press the trigger firmly -

  58 - until the rocker is engaged - 33 - in the hanging opening - 40 -, Ce

  movement causes the end of the trigger - 58 - carrying the elastic fork - 61 -

  moves, which causes: On the one hand the switching of the Microswtich switch - 28 - which supplies

the heating element.

  On the other hand the movement of the player - 60 - on the hub - 55d - along the grooves - 55 e - by the action of the pads - 61c -, it stops in its most position

  close to the engine. Movement drives crank end - 56c -

  of the trunnion - 56 -, this pivots in rotation, its axial part - 56 rotates in the

  crossing - 55a - and brings the part of the blade - 57 - located around the hollow core - 57a-

  to a position where it makes an angle Co with respect to the plane P. (Figure 8, Section

Partial B).

  The propeller pitch is thus reversed, and the engine always turning in the same direction, the air circulates by entering through the closing box - 19 - and leaving by the removable cover - 13 - after being heated to passage. The device according to this variant - 51 - has the disadvantage of ejecting air during

  the suction in the axis of the device and therefore the face of the user.

  It has the advantage of retaining the same direction of rotation to the motor and of allowing a high sensitivity of the cold suction or blowing position because it allows immobilization of the propeller blade in intermediate positions

  contained either in angle [3 or in angle o.

  The device from this variant - 51 - of the device which is the subject of the invention uses, like it, a single turbine or propeller to alternately produce the two effects

  research; hot or cold blowing, or suction.

  While remaining within the same inventive concept, we can imagine a simplified device combining the two effects by producing them simultaneously, but by distributing them separately. Such as for example a device according to a variant - 62 - of

the device which is the subject of the invention.

  This device described below includes: (Figure 9, Plate 5/6) * An air production group - 63 - hot and cold composed of: - An engine - 64 whose operation is not dissociated from that of the heating element, we can therefore use a series connection with for the

  motor - 64 - a voltage of 12V. The rest being used for heating.

  - A heating element - 65 - conical in shape

  - A double helico-centrifugal turbine - 66 - double acting fixed mounted on the axis -

  67 - of the engine - 64 -. This one-piece molded piece constitutes the originality of this variant - 62 -, it brings together the following three parts: (Figure 10, Plate 5/6) A central cone - 66a - connecting the hub - 66b to:

  An inner belt - 68 - carrying the blowing blades - 68a -

  These are oriented towards the interior of the device, the leading edges - 68b located in the same plane and their curvatures - 68c oriented so that they

  allow to take the air inside the device to reject it to the outside.

  An outer belt - 69 - carrying the suction blades - 69a oriented towards the outside of the device with their leading edges - 69b - located in the same plane and their curvatures - 69c - oriented in such a way that they let take

  outside air to introduce it inside the appliance.

  The central cone - 66a - and the inner belt - 68 - are connected by the border

circular - 70 -.

  The inner belt - 68 - and the outer belt - 69 - are connected between

  them by the circular cord - 71 -.

  * A closing box - 72 - substantially identical to the

closing- 19-.

  * A removable cover - 13 - with a round comb - 73 - with short teeth and

  a connecting rod - 17 - to a safety switch - 18 -.

  This sub-assembly is used as for the device which is the subject of the initial invention.

  The round comb - 73 - with short teeth has a partition - 74 - bevelled

  whose bevel - 74a - is oriented towards the interior of the device.

  * A central body - 75 - whose connections to the closing box - 72 and to the removable cover sub-assembly - 13 - / round comb - 73 - are identical to that of the central body - 6 -, but the middle part of which consists of :

- An outer wall - 75a -

  - An inner cage - 75b - in which the engine is installed - 64.

  - An intermediate wall - 75c - connected by external arms - 75d - to the external wall - 75a - and by internal arms - 75c - to the internal cage - 75b -. It has a bevelled edge - 75f- on the helico-centrifugal turbine side, the whole constituting

one piece.

  The heating element - 65 - is installed between the inner cage - 75b and the intermediate wall - 75c -, which constitutes the hot chamber - 76 -. It is between these two elements that also circulate the blowing blades - 68a - carried by the belt

  interior - 68 - when the engine - 64 - is running.

  The suction blades - 69a - are arranged to circulate between the outer wall - 75a - and the intermediate wall - 75c - the volume between these two

  walls constitutes the cold room - 77 -.

  By construction, care will be taken to obtain a minimum clearance between the bevel 75f -

  s of the intermediate wall - 75c -, the bevel - 74a - of the sharing belt - 74 - and the circular bead - 71 - to limit air passages and turbulence as much as possible

  between the hot room - 76 - and the cold room - 77 -.

  * An On / Off switch - 78 -.

  The device that is the subject of this variant - 62 - works as follows: The switch-on is made by the On / Off button - 78 - which controls

  simultaneously switching on the motor - 64 - and the heating element - 65 -.

  As soon as the helico-centrifugal turbine - 66 - starts to rotate, the air contained in the device is set in motion and we can observe the creation of two air flows, one hot, the other cold , circulating inside the cold - 76 - and hot - 77 - chambers, in the opposite direction, which is explained by the fact that: - On the one hand, the rotation of the suction blades - 69a - causes a depression on the outside of the removable grid - 13 - directly above the cold room - 77 - and pushes the air it contains towards the closing box - 72 -. This movement is maintained by the rotation of the blades , an air flow is created entering through the removable grid - 13 - and the brush - 73 - and emerging through the holes - 20 of the

closing box - 72 -.

  - On the other hand, the rotation of the blowing blades - 68a -

  causes a vacuum on the outside of the closing box - 72 - directly above the hot chamber - 76 - and pushes the air it contains towards the removable grid - 13-. This movement being maintained by the rotation of the blades, it creates an incoming air flow at

  through the closing box - 72 -, circulating around the heating element - 65 -

  energized, causing it to heat up, and coming out through the holes

  provided in the round comb - 73 - and the removable grid - 13 -.

  The bevelled edge - 75f - and the bevel - 74a - of the partition wall 74 -

  promote air flow with a minimum of turbulence, and materialize a

  physical separation between the two air flows, inside this device.

  Outside, there will be created in the interface zone between the two flows, a phenomenon of mixing and resumption of air from one current to the other, tending to "2 create an air circulation always in the same direction around the surface of the intermediate wall - 75c - In practice, on the scalp of the user this will help to lift the hair plated by blowing and to expose them more to the flow of

  re-aspiration and therefore to improve their drying.

  The device according to the variant - 62 - illustrates a simplified version of the concept of

  base of the device object of the invention.

  The apparatus according to another variant - 79 - of the apparatus which is the subject of the invention, represents another way of obtaining the desired result. Two helico-centrifugal turbines are used which can be driven separately, the engine always turning in the same direction. It is a combination of the device according to the variant - 51 - and the device according to the variant - 62 -, plus an original part concerning the setting

  movement of one or other of the turbines.

From variant - 51 - it keeps:

  - The electrical controls described on page 16, Line 23 to 27.

  - Optionally, according to the will or not of the manufacturer, an immobilization or order release system, linked to the

  clutch control device described below.

  - The removable cover - 13 - with its round comb, * From the variant - 62 - it keeps: - The motor - 64 - and the heating element - 65 -, - The closing box - 72 -, It is completed by the following elements: (See Figure 11, Plate 6/6) * A central body - 80 - whose connections to the closing box - 72 - and to the removable cover sub-assembly - 13 - / round comb are identical to those of the body central - 6 -, but the middle part of which consists of: - An external wall - 80a -, - An internal cage - 80b - in which the motor is installed - 64 -, - An intermediate wall - 80c - connected by arms external - 80d - to the

  outer wall - 80a - and by internal arms - 80 e - to the inner cage - 80b -.

  The external arms - 80d - and the internal arms - 80 e - are regularly angularly spaced and concentric around the inner cage - 80b - there are 6 to 12. There is one spacing between the internal arms - 80 e -, preferably oriented on the handle side, will allow the inclusion in the intermediate wall - 80c - of a cradle - 81 - composed of a roof - 81a - and two side walls - 81b -; in the extension of this cradle - 81 - we will find a partition - 82 - connecting the intermediate wall - 80c - to the outer wall - 80a of a width identical to that given by the side walls - 81b - and intended to support the spring - 83 -. * A helico-centrifugal blowing turbine - 84 - composed of blowing blades - 84a -, with shapes and definitions similar to those - 68a - attached to the inner belt - 68 - of the bi-turbine - 66 - and described on page 19, line 31 to page

  , line 2, and mounted on a crown - 84b-.

  A dish - 84c - with a flat bottom ensures the connection between the crown - 84b - and the

  hub - 84d - of this turbine - 84 -.

  * A helico-centrifugal suction turbine - 85 - composed of suction blades - 85a -, of similar shape and definition to those - 69a attached to the outer belt - 69 - of the bi-turbine - 66 - and described on page 20, line 2 to 6, and mounted on a cone crown - 85b -. Link arms - 85c - connect this

  last at the hub - 85d - of this turbine - 85 -.

  The hubs - 84d - and - 85d - have the common characteristic of being centered and mounted "just sliding" by their respective bores - 84 e - and - 85 e - on the cylindrical body - 86a - of a driver - 86 - . They each have a flat bottom groove, respectively - 84f- and 85f- and a female cone, respectively - 84g - and

- 85g - clutch.

  * A clutch assembly including:

  - A driver - 86 - with cylindrical body - 86a - fixed on the motor axis - 64 -

  with in its middle and projecting, a male bicone - 86b - one face 86c - is turned towards the inside of the device and the other face - 86d towards the outside. These conical faces are coated with a material of known type capable of ensuring friction drive of either of the turbines, by means of a

  put in contact either with the female cone - 84g - or with the female cone - 85g -.

  - A clutch fork - 87 - made in two parts, a half-shell - 88

  and a half-shell - 89 - in which a flexible blade - 90 - is fixed.

  These two half-shells form a guide bearing for the hubs of the turbines, with which they are connected by the circular openings - 88a

  - and - 89a - bearing hubs at the bottom of grooves, respectively - 84fet - 85f-.

  To ensure the sliding required for the clutch, it is necessary between the grooves -

  84f- and - 85f -, and the semicircular openings - 88a - and - 89a - the following relationships:

  - The race to go from one turbine to another is rated - M.-.

  s5 - In the driving position of the blowing turbine (Figure 11-Plate 6/6, Magnifier L scale 5/2), the female cone - 84g - is in contact with the face - 86c - of the

  male bicone - 86b - This contact is pressed and maintained by the action of the blade - 90 -

  which relays that of the spring - 83 - and exerts its action via the faces - 88b

  - and - 89b - half shells - 88 - and - 89 -, on the flank F of the gorge - 84f-.

  - A clearance - J - slightly greater than - M - will be left between the other side of the

  throat - 84f- and the semicircular openings - 88a - and - 89a -.

  - A slight game - J1 - will be provided between the flank F1 of the throat - 85f- and the cheeks -

  88c - and - 89c - half shells - 88 - and - 89 - to limit friction to the single

hub diameter.

  * A clutch control device composed of: - A clutch lever - 91 - articulated around an axis - 92 - supported by

  and the other in the side walls - 81b -. It has, crimped on its end - 91a -

the flexible blade - 90 -.

  The device according to the variant - 79 - shown Plate 6/6 does not include a device for immobilizing or releasing the clutch lever - 91 -, the latter is therefore permanently pushed by the spring - 83 -. Such a device may, on the basis

  of the foregoing descriptions to be optionally incorporated by those skilled in the art, in

this variant.

  This device according to variant - 79 - operates as follows:

  Pressing the on / off switch - i4 - starts the motor 64 -.

  The "Microswitch" switch - 28 - being in the closed position, allows the passage of the

  current and the heating element - 65 - is energized.

  The "Microswitch" switch - 28 - is held in its position by the pushing of the spring - 83 - which is transmitted to it by the clutch lever - 91 -, which also transmits it via the axis - 92 - with a flexible blade - 90 -. The latter communicates this pressure to the half-shell - 88 - in which it is fixed and to the clutch fork - 87 -, the latter tends to move towards the outside of

  the device; as it is in connection with the hub - 84d - of the helical turbine

  centrifugal blowing - 84 - and its stroke is not limited, it is the plating of the female cone - 84g - against the face - 86c - of the male bicone 86 - which takes the place of setting

  in stop, ensures the clutch and the rotational drive of the helical turbine

  centrifugal blowing - 84 -. The air circuit can then be created by entering through the closing box - 72 -, by heating in contact with the heating element - 65 - and by exiting towards the hair through the round comb - 73 - and the removable brush - 13 To disengage and switch to the suction circuit, press firmly on the

clutch lever - 91 -.

  This action results in the reversal of the direction of movement, and using the same chain of relationship between the parts of the device, to move the clutch fork - 85 - towards the inside of the device, this which separates the cone

  female - 84g - front - 86c - male bicone - 86 -.

  The movement continuing it is the turn of the face - 86d - of the bicone to come and press against the female cone - 85g - carried by the helico-centrifugal suction turbine - 85 -, the latter can then enter into rotation and reverse the direction of air circulation. This command is exerted as long as the pressure on the clutch lever - 91 - is maintained. As soon as it stops we return to position

  blowing since it is the one favored by the action of the spring - 83 -.

  The suction position corresponds to a stop in operation of the heating element - 85 - this being disconnected from the start of the function reversal by

  separation of the "Microswitch" switch - 28 - from the clutch lever 91 -.

  The apparatus according to variant - 79 - illustrates the case of a drying apparatus,

  can generate, by pulses only, suction phases.

Claims (14)

  1 - Apparatus usable by hand for individual drying or treatment of the hair characterized in that it comprises means allowing, by combined or alternating use of a blowing of hot air and a suction, propelling or attracting l air through the same interface with respect to the head, rapid evaporation of water at the level of the hair and sufficient evacuation, simultaneous or not, of all the steam produced.   2 - Apparatus according to claim 1 characterized in that it comprises inside   of a covering composed of a central body - 6 - and a closing box - 19 -.   - An air production group - 1 - including a heating element - 2 and a means   motor - 3 - associated with a ventilation means of propeller or turbine type.   - A central body - 6 - arranged to carry the components of the air production group as well as the hairdressing accessories capable of adapting to the device and fitted with a plurality of openings to allow air circulation in the desired conditions.   - A removable cover - 13 - arranged with several types of openings.   - On the one hand holes - 14 - to allow the teeth of a round comb to pass through - 10 - On the other hand a plurality of orifices - 15 - for the passage of air flow in one direction or in the other, and ensuring a filter function - 16 - during the suction function of said device.   - A device for quick and easy reversal of the air flow - An operating control device - A system for immobilizing, or releasing, the operating control device. - Security means ensuring the presence and positioning control of the   cover - 13 - and / or accessories and enabling the device to be switched off.   3 - Apparatus according to claim - 2 - characterized in that the flow reversal device comprises: - A flow direction selector 21 - consisting of a partially obstructed cylindrical part, to allow the distribution of the flow by blowing or suction , said selector including a plurality of lateral orifices - 22 - established on its periphery intended to be in relation to the orifices - 7 - of the central body, and front orifices - 23 - intended to be in relation to the orifices - 8 - from the central body; and in that said flow selector - 21 - is mounted to rotate freely opposite and with respect to the central body - 6 - 4 - Apparatus according to claim 2 characterized in that the operation control device is established to be in use right-handed - left-handed and includes: - A push lever - 25 actuable against an elastic return means,   said lever being accessible from the outside.   - A push rod - 31 - movable in the handle of the device.   - An electrical device - 32 - for operating and comprising switch means connected to the control device and allowing the selection in movement of the push lever - 25 - and / or of the push rod - 31 -, said electrical device   ensuring an immediate stop of the heating as soon as the transition to suction function begins.   - Apparatus according to claim 1 and 2 characterized in that it is arranged to allow an ergonomic grip defined by a handle - 6b located in a plane parallel to the plane designated P in which the propeller rotates and a position of its main axis not intersecting with the central body - 6. The connection between the central body - 6 - and the handle is ensured by one or more connecting arms. Space E for passage   fingers are provided between the central body - 6 - and the handle and / or the link arms.   The surface condition of the exterior parts will be in a roughness class between Ra of 0.025 and 0.1 im.   6 - Device according to claims 1 and 2 characterized in that it is arranged for   limit the emission of sound waves in its environment by a constitution of the walls of its covering, corresponding to the parts of the central body - 6 - and of the closure housing - 19 - in contact with the outside, made of single-component or multi-component materials , monolayers or multilayers and by an internal surface of these walls bristling with mini volumes constituting reverberant sets trapping sounds such as for example: cones, diamond tips, waves, more or less streaks deep, etc ...   7 - Apparatus according to any one of claims 1 to 6 characterized in that it is   arranged to receive a bi-purpose end piece - 42 - comprising a narrowing   air concentrator - 42a - fitted with side bars - 42b -, combing teeth -   42c - and connecting bars - 42d -. Each side bar - 42b integrates a means of producing heat which can either be a mass accumulating thermal energy recovered from the hot air in blowing function, or a means of autonomous heating, PTC or resistance integrated by example.   8 - Apparatus according to claim 7 characterized in that, for suction, each   end of the concentrator constriction - 42a - includes an elastic clamp - 42 e -   securing a combing grid - 44 -   9 - Apparatus constituting a variant - 51 - of the apparatus object of the invention, according to claim 1 and 2 and 5 to 8 in which the flow reversal device uses different means and characterized in that the reversal of flow is obtained by a propeller pitch reversal assembly comprising: -a supporting body - 52 - of external shape identical to the central body - 6 - and which has an external wall 52a - and an internal cage - 52b - connected by bars arranged at angular intervals from 45 to 60. One of the spaces between   two bars being filled by a partition - 53 -.   - A propeller - 54 - with variable pitch.   - A device for controlling the propeller pitch reversal.   - Apparatus according to claim 1 - 2 -5 to 8 and 9 characterized in that the variable pitch propeller - 54 - comprises:   - A blade support - 55 - centered by its hub - 55d - on the axis of the engine -4 -.   - Trunnions - 56 - mounted rotating in the blade support - 55 - and one end of which is in the form of a crank - 56c - ensures the connection with the overturn control device and the other end, straight, the connection with, - Propeller blades - 57 -.   It - Apparatus according to claim 1 -2 - 5 to 8 and 9 characterized in that the device for controlling the reversal of the propeller pitch comprises: - A trigger - 58 -.   - A walkman - 60 - sliding freely on the hub - 55d - and comprising two   circular grooves - 60a - and - 60b -.   - An elastic fork - 61 - with each fork end fitted with pads - 61 c - or rotating rollers   The pads - 61 c - are mounted in the groove - 60a -   The ends - 56c - of the pins - 56 - are mounted in the groove 60b -.   12 - Device constituting a variant - 62 - of the device which is the subject of the invention, according to claim 1 and 5 to 8, characterized in that the means used make it possible to combine the use of the blowing and suction flows and comprise: - An air production group - 63 including a heating element - 65 - shaped   conical and a hub - 66b - mounted on the axis - 67 - of the motor - 64 - associated with a bi- turbine - 66 - helico-centrifugal - A central body - 75 -. - A removable cover - 13 -.   - A round comb - 73 - fitted with a beveled partition.   - An operating control device.   13 - Apparatus according to claim 1- 5 to 8 and 12 characterized in that the twin-turbine - 66 - helico-centrifugal comprises:   - A central cone - 66a - connecting its hub - 66b - to an inner belt - 68 -   support of the blowing blades - 68a - and an external belt - 69 support of the suction blades - 69a - oriented towards the outside of the device to allow the grip outside air.   - This central cone - 66a - and the outer belt - 69 - are connected by a border   circular - 70 - while the inner belt - 68 - and the outer belt - 69 -   are connected by a circular cord - 71 -.   14 - Apparatus according to claim 1- 5 to 8 - 12 and 13 characterized in that the central body - 75 - comprises an outer wall - 75a -, an inner cage - 75b - receiving the motor - 64 and an intermediate wall - 75c - connected to the outer wall and the inner cage by link arms and in that the heating element - 65 - is arranged between the inner cage - 75b - and the intermediate wall - 75c - which constitutes the hot chamber - 76 - And in that the blowing blades - 68a - are located in said hot chamber, while the suction blades 69a - are arranged in the   cold room - 77 - defined between the outer wall - 75a - and the intermediate wall - 75c-.   - Device constituting a variant - 79 - of the device which is the subject of the invention, according to claim 1 and 5 to 8, characterized in that the reversal of flow is obtained by setting in separate motion, the motor always rotating in the same direction, either of a propeller assigned to the blowing function, or of a propeller assigned to the suction function, this constituting a set of means comprising: - An air production group - 63 - including a heating element - 65 - shaped   conical and a drive - 86 - mounted integral with the axis - 67 - the motor - 64 -. - A central body - 80 -.   - A helical centrifugal blowing turbine - 84 -.   - A centrifugal helical suction turbine - 85 -. - A clutch assembly   - A clutch control device.   - A removable cover - 13 - with its round comb and the safety means associated.   16 - Apparatus according to claim 1 - 5 to 8 and 15 characterized in that the helical centrifugal blowing turbine - 84 - consists of blowing blades - 84a - mounted   on a crown - 84b - and a hub - 84d -, linked together by a bowl - 84c -   and in that the centrifugal helical suction turbine - 85 - consists of suction blades - 85 a - mounted on a cone ring - 85b - and a hub - 85d -, connected to each other by arms of connection - 85c - and in that the respective hubs of each of the turbines have a flat-bottomed groove for their control and a female cone 3 'intended to ensure the connection by clutch by friction on parts   taper carried by the coach - 86 -.   17 - Apparatus according to claim 1 - 5 to 8 and 15 and 16 characterized in that the central body - 80 - comprises an outer wall - 80a -, an inner cage - 80b - receiving the motor - 64 - and an intermediate wall - 80c - connected to the outer wall and the inner cage by connecting arms defining between them angular sectors, one of   the latter oriented on the handle side being used to allow the inclusion of a cradle -   81 - carrier of the clutch control device, and in that the heating element -   65 - is arranged between the inner cage - 80b - and the intermediate wall - 80c - to constitute a hot chamber, and in that the blowing blades - 84a - are located in said hot chamber while the suction blades - 85a - are arranged in   a cold room defined between the outer wall - 80a - and the intermediate wall -   vs -. 18 - Apparatus according to claim 1 - 5 to 8 - and 15 to 17 characterized in that the clutch device and its control comprise the driver - 86 - comprising a male bicone - 86c - in relief on a cylindrical body - 86a - , a fork   clutch - 87 - composed by the assembly of two half shells - 88 - and - 89 -   which are mounted in the flat bottom grooves provided on the hubs 84d - and - 85d and a flexible blade - 90 - connecting the clutch fork - 87 - and a lever clutch - 91 -.