RU2694926C1 - Nozzle for hand instrument - Google Patents

Abstract

FIELD: satisfaction of vital human requirements.

SUBSTANCE: invention relates to a hair appliance nozzle comprising a main portion having a fluid inlet, a fluid outlet, a fluid flow path extending between the fluid inlet and the fluid outlet, first guide device and a second guide device for guiding the fluid in the fluid flow path towards the fluid outlet, wherein the main portion comprises at least two expanded plates, wherein the fluid medium outlet comprises a slot formed by the application of at least two expanded plates, wherein the first guide device and the second guide device are located within the at least two expanded plates, wherein the first guide device and the second guiding device are bent in opposite directions. Fluid inlet can have a first cross-sectional area, wherein the main part has an outer wall, wherein the outer wall of the main portion has a second cross-sectional area, wherein the second cross-sectional area is greater than the first cross-sectional area.

EFFECT: nozzle for a hair care appliance is disclosed.

25 cl, 18 dwg

Description

The technical field to which the invention relates.

The present invention relates to a nozzle for a hand-held device, in particular a hair care device, such as a hot hair styling device.

The level of technology

In a conventional device for hot hair styling, air is drawn into the entrance with the help of the fan unit and is directed to the hairs with the help of a head or nozzle. Depending on the desired installation, the air may or may not heat up. The head or nozzle often contains bristles on which hair is wound and which retain them for styling. Air usually leaves the nozzle perpendicular to the nozzle surface. When curls are made on the hair, it can be difficult to separate the hair from the bristles and the hair may become tangled.

When curls are made on the hair, it is also known to use hair curling irons, in which the heated cylinder can reach high temperatures until the hair is coiled around the cylinder, and then the hair is held by clamping the cylinder for a period of time. Repeated use of such hair curling irons at high temperatures can damage the hair.

Disclosure of the invention

In accordance with the first aspect of the invention, an attachment for a hair care device is proposed, comprising: a main part having a fluid inlet, a fluid outlet, a fluid flow path extending between the fluid inlet and the fluid outlet, and at least at least one paddle to direct the fluid in the fluid flow path towards the fluid outlet, the main part comprising at least two expanded plates, the fluid outlet containing a slit, forming overlaying at least two expanded plates, wherein at least one blade is located within the overlay of at least two extended plates.

The advantage of this is the location of the blades on the inner surface of each plate, which provide the exact direction of flow when it leaves the nozzle. More specifically, a uniform flow of air coming out of the nozzle will allow the strands of hair to adhere evenly along the entire length of the cylinder.

Preferably, the main part is elongated and extended along the axis. In one preferred embodiment of the invention, the elongated body comprises a first end and a second end, the fluid inlet being located at the first end.

Preferably, the fluid outlet continues along an axis between the first end and the second end.

In one preferred embodiment of the invention, said at least one blade has a streamlined shape. This form is preferred because it reduces turbulence.

Preferably, said at least one blade changes the direction of the fluid flowing in the fluid flow path from the first direction to the second direction. In one preferred embodiment of the invention, the first direction is parallel to the axis of the main part. Preferably, the second direction is inclined by an angle of between 85 ° and 95 ° with the specified axis.

In one preferred embodiment of the invention, said at least one blade is a plurality of blades extending from the first end of the main part towards the second end of the main part.

Preferably, the plurality of blades are unevenly arranged along the main body. In one preferred embodiment of the invention, the blades of the specified set of blades gradually approach each other towards the second end.

Preferably, the blades of the specified set of blades were inclined to the axis of the main part. In one preferred embodiment of the invention, the angle of at least some blades of a plurality of blades is different from the corners of adjacent blades. Preferably, the angle of the blades of the specified set of blades relative to the specified axis increased towards the second end.

The advantage of this is to provide blades with varying angles within the overlap, while the angles of the blades depend on the position of the blades along the length of the nozzle, which helps to optimize the air flow in the nozzle.

In one preferred embodiment of the invention, the size of the blades of a plurality of blades varies between the first end and the second end. Preferably, the size of the blades of the plurality of blades gradually decreases towards the second end of the main part.

In one preferred embodiment of the invention, all the blades of a plurality of blades have the same profile.

Preferably, the gap is bent relative to the axis of the main part. The advantage of this is to combine the twisting spiral shape of each plate, which provides spiral exit slots for the fluid, and internal blades to direct the flow coming out of the nozzle, as this improves the fit of the air flow to the nozzle surface.

In one preferred embodiment of the invention, said at least one blade is substantially the same length as the overlap of at least two expanded plates.

Preferably, one blade from said at least one blade performs a structural function as well as a flow direction function.

In one preferred embodiment of the invention, each expanded plate is formed from a stand and a plate.

Preferably, the slit is formed by a rack and a plate of adjacent expanded plates.

In accordance with the second aspect of the invention, a nozzle for a hair care device is proposed, comprising: a main part having a first end and a second end, a fluid inlet at the first end, a fluid outlet and a fluid flow path extending between the fluid inlet medium and outlet for the fluid, while near the second end of the elongated main part provides a cold tip, and the cold tip is located at a distance from the second end of the elongated main part.

The gap between the bottom of the cold tip and the adjacent end of the elongated body preferably minimizes heat transfer to the cold tip, and also preferably allows manufacturing tolerances to exist between the component parts of the device assembly.

Preferably, an air gap is provided between the cold tip and the second end of the elongated core.

In one preferred embodiment of the invention, the cold tip comprises an annular flange that extends around the second end of the elongated core. Preferably, the elongated core comprises an outer wall. In one preferred embodiment of the invention, the annular flange is located at a distance from the outer wall.

In one preferred embodiment of the invention, the cold tip comprises a handle extending from the flange. Preferably, the handle is cylindrical. In one preferred embodiment of the invention, the handle is hollow. The presence of a hollow handle on a cold tip is advisable, since the air inside it provides additional insulation.

Preferably, the outer wall is made of at least two plates that extend from the first end to the second end.

In one preferred embodiment of the invention, the fluid outlet comprises a slit, wherein said slit extends between at least two plates. Preferably, the slit is curved. In one preferred embodiment of the invention, the fluid outlet contains more than one slit.

In accordance with the third aspect of the invention, an attachment for a hair care device is proposed that comprises a first device node and a second device node, wherein the first device node comprises a cage on which the components of the second device node are installed.

Preferably, the first device node is formed from a plurality of racks located at a distance from each other.

In one preferred embodiment of the invention, the second device assembly comprises a plurality of plates.

Preferably, each rack of a plurality of racks spaced apart from each other comprises a longitudinal protrusion that extends from the first end to the second end. In one preferred embodiment of the invention, each plate of a plurality of plates contains an interacting longitudinal protrusion.

Preferably, the same number of plates and racks are provided.

In one preferred embodiment of the invention, the first device assembly comprises at least one structural blade that extends between a pair of adjacent posts.

Preferably, the second device assembly comprises a plurality of plates and each plate of said plurality of plates contains a recess for receiving said at least one structural blade.

In one preferred embodiment of the invention, the nozzle contains an elongated main part formed by a plurality of racks located at a distance from each other and a plurality of plates. Preferably, the elongated core comprises a first end and a second end.

In one preferred embodiment of the invention, each plate of a plurality of plates and each rack of a plurality of racks spaced apart are provided with one element of an interacting pair of protrusions and recesses at the first end of the elongated main part. Preferably, each plate of a plurality of plates and each rack of a plurality of racks spaced apart are provided with a second element of an interacting pair of projections and recesses at the second end of the elongated main part.

In one preferred embodiment of the invention, after attaching a plurality of plates to the first node of the device, a plurality of plates are welded to the first node of the device.

Preferably, each rack of a plurality of spaced racks contains a longitudinal protrusion that extends from the first end to a second end, and each plate of the plurality of plates contains an interacting longitudinal protrusion, and that these protrusions are welded to each other.

In one preferred embodiment of the invention, at the far end of each rack of a plurality of racks located at a distance from each other and each plate of a plurality of plates from a longitudinal protrusion and an interacting longitudinal protrusion is a slot, this slot forms part of the fluid outlet of the nozzle.

Preferably, a plurality of vanes are provided in the slit. In one preferred embodiment of the invention, the blades of a plurality of blades serve to maintain the gap between the stand and the plate. Preferably, a plurality of vanes serve to rotate the fluid flowing out of the gap.

In one preferred embodiment of the invention, a connecting ring is provided at the first end of the elongated main part, which serves to connect the nozzle with the hair care device.

In accordance with the fourth aspect, the invention proposes a nozzle for a hair care device comprising an elongated body having a first end and a second end, a fluid inlet at the first end, a fluid outlet and a fluid flow path extending between the inlet for a fluid medium and an outlet for a fluid medium; an annular shoulder is provided at the first end, the annular shoulder extending around the elongated main part.

The advantage of this is that the square rim or annular collar at the first end of the nozzle, which functions to prevent air from being caught near the device for hot hair styling with air and to prevent hair from winding down on the device for hot hair styling with air.

Preferably, the fluid outlet extends from a location adjacent to the annular shoulder toward the second end of the elongated core. In one preferred embodiment of the invention, the annular shoulder protrudes from the elongated main part. Preferably, the elongated main part extends along the axis, and the annular shoulder is substantially perpendicular to said axis of the elongated main part. In one preferred embodiment of the invention, the elongated main part extends radially from the axis, with the annular shoulder extending further from the axis compared to the elongated main part. Preferably, the annular bead lasts radially around the elongated core.

In one preferred embodiment of the invention, the fluid outlet comprises at least one slit that extends along an elongated core.

Preferably, the outer wall is made of at least two expanded plates and said at least one slot extends between said at least two expanded plates.

In one preferred embodiment of the invention, the elongated body extends along an axis, wherein said at least one slit is bent relative to said axis. Preferably, said at least one slit is helical.

In accordance with the fifth aspect, the invention proposes a nozzle for a hair care device comprising an elongated body having a first end and a second end, a fluid inlet at the first end, a fluid outlet and a fluid flow path extending between the inlet for a fluid medium and an outlet for a fluid medium, wherein the diameter at the first end is larger than the diameter at the second end, and the output for the fluid continues from the first end to the second end.

Preferably, the elongated main part is tapered from the first end towards the second end.

In one preferred embodiment of the invention, the diameter of the elongated main part gradually decreases from the first end of the elongated main part. Preferably, this reduction in diameter continues along a portion of the elongated main portion. In one preferred embodiment of the invention, there is a gradual transition from the diameter at the first end to the diameter at the second end.

Preferably, the elongated core comprises an expanded plate that extends from the first end to the second end. In one preferred embodiment of the invention, the expanded plate has a thickness, and the thickness of the plate is substantially the same along the main body.

Preferably, any change in diameter along the length of the elongated main part is both an internal change and an external change.

In one preferred embodiment of the invention, the elongated body extends toward the first end. It is an advantage that the expanding profile of the first end of the nozzle reduces turbulence and thus contributes to the initial fit of the end of the hair strand. Further, the hair is wound from the second end of the nozzle towards the inlet end for air flow.

Preferably, the elongated main part extends along the axis and has a substantially constant diameter along this axis from the second end towards the first end.

In one preferred embodiment of the invention, the fluid outlet comprises at least one slit that extends along an elongated core. Preferably, the elongated main part extends along the axis and said at least one slit is bent relative to said axis. In one preferred embodiment of the invention, said at least one slit is helical.

It is advisable that the nozzle corresponding to the present invention, could have different sizes to ensure different sizes of curls. Moreover, either spiral exit slots for air flow with a counterclockwise direction, or spiral exit slots for air flow with a clockwise direction can be used. The direction of the overlap of the slit determines the direction of the curls.

In accordance with the sixth aspect, the invention provides a nozzle for a hair care device, comprising: a main part comprising a fluid inlet, a fluid outlet, a fluid flow path extending between the fluid inlet and the fluid outlet, the first guiding device and the second guiding device for guiding the fluid in the fluid flow path towards the fluid outlet, wherein the main part contains at least two expanded plates, and The fluid outlet comprises a slot formed by overlapping at least two expanded plates, wherein the first guide device and the second guide device are bent and arranged within the overlay of at least two expanded plates, the first guide device and the second guide device are bent in opposite directions .

Preferably, the fluid inlet has a first cross-sectional area, and the main body comprises an outer wall, and the outer wall of the main body has a second cross-sectional area, while the second cross-sectional area is larger than the first cross-sectional area.

In one preferred embodiment of the invention, the fluid inlet has a diameter of d _f , and the nozzle has a diameter of d ₂ , with d ₂ greater than d _f .

Preferably, the main part is elongated and extended along the axis. In one preferred embodiment of the invention, the elongated body comprises a first end and a second end, the fluid inlet being located at the first end.

Preferably, the first guide device is located adjacent to the fluid inlet. In one preferred embodiment of the invention, the first guide device comprises a convex surface, with the convex surface facing the fluid inlet.

Preferably, the second guiding device comprises a concave surface and a concave surface facing the fluid inlet.

In one preferred embodiment of the invention, the first guide device and the second guide device have a streamlined shape.

Preferably, the fluid outlet continues along an axis between the first end and the second end.

In a preferred embodiment of the invention, the second guide device comprises a plurality of blades spaced apart from each other along the expanded plates. Preferably, the blades of the specified set of blades were unevenly arranged along the expanded plates. In one preferred embodiment of the invention, the blades of the specified set of blades are inclined relative to the axis of the main part. Preferably, the angle of at least some blades of a plurality of blades is different from the corners of adjacent blades. In one preferred embodiment of the invention, the angle of the blades of the specified set of blades relative to the specified axis increases towards the second end. Preferably, the size of the blades of the plurality of blades varies along the expanded plate. In one preferred embodiment of the invention, all the blades of a plurality of blades have the same profile. Preferably, the specified at least one blade had essentially the same length as the overlay of at least two expanded plates.

In one preferred embodiment of the invention, the gap is curved relative to the axis of the main part.

Preferably, each expanded plate is formed by a pillar and a plate.

In one preferred embodiment of the invention, the slit is formed by a stand and a plate of adjacent expanded plates.

Preferably, the nozzle additionally contains at least one structural blade. In one preferred embodiment of the invention, said at least one structural blade connects adjacent stands. Preferably, the specified at least one structural blade connected the rack and plate.

It is advisable that the protrusion on the front edge of the inner surface of the plate provides improved adhesion of air flow to the outer surface of the nozzle, in particular in nozzles of larger diameter (for example, 40 mm).

In accordance with another aspect, the invention proposes a nozzle for a hair care device comprising a main part having a fluid inlet, a fluid outlet and a fluid flow path extending between the fluid inlet and the fluid outlet, the output for the fluid contains a gap formed by the imposition of a radially inner expanded plate and a radially outer expanded plate.

Preferably, the radially inner expanded plate comprises a radially inner surface that is bent radially inward toward the overlay.

Preferably, the radially inner expanded plate comprises a stand and a plate.

In one preferred embodiment of the invention, the radially inner surface comprises a stiffener, which preferably extends into the interior of the rack. Preferably, this stiffener is rounded to provide a smooth transition for the fluid flowing through the nozzle. The rib extends from the entrance end of the overlap at least partially along the radially inner surface of the rack.

Preferably, the stand contains a bulge located near the inlet end of the radially inner plate. This bulge is a projection or a local thickening of the rack. Preferably, the bulge is essentially hemispherical. Preferably, the bulge extends from the upstream end of the rack to the downstream end of the rack. Alternatively, the bulge extends partly along the rack.

In one preferred embodiment of the invention, the rib, protrusion or bulge extends substantially along the entire length of the rack.

Preferably, near the fluid inlet, the stiffener, protrusion or bulge contains a rounding or inclined surface. This provides a smooth transition for the fluid flowing into the nozzle. Preferably, the nozzle contains a connecting ring for connection with the device. In a preferred embodiment of the invention, the connecting ring defines the fluid inlet to the nozzle. Preferably, near the connecting ring, the rib, protrusion or bulge are located in the same plane as the connecting ring. In one preferred embodiment of the invention, the rib, protrusion or bulge extend radially inwards to a minimum radius from the connecting ring towards the downstream end of the nozzle. When the minimum radius is reached, it is preferable that the stiffener, the protrusion or bulge have a substantially constant radius relative to the longitudinal axis X-X of the nozzle.

Preferably, the hair care device is a hot hair styling device.

Brief Description of the Drawings

Further, for example only, the preferred features of the present invention will be described with reference to the attached drawings.

FIG. 1 shows an embodiment of the present invention, in perspective view;

in fig. 2a - nozzle view with a spatial separation of parts;

in fig. 2b — first device assembly, isometric view;

in fig. 2c shows a second device node, an exploded view;

in fig. 3 - nozzle, side view;

in fig. 4 is a cross-section along line A-A of FIG. 3;

in fig. 5 is a cross-section along the line BB of FIG. 3;

in fig. 6 is a section along the line XX of FIG. 3;

in fig. 7 - nozzle, view from the top;

in fig. 8 - nozzle, view from the base;

in fig. 9 - one plate, front view;

in fig. 10 - one plate, side view;

in fig. 11 is a second embodiment of the present invention, perspective view;

in fig. 12 — the nozzle of FIG. 11, an exploded view;

in fig. 13 shows the nozzle of FIG. 11, side view;

in fig. 14 is a cross-sectional view along line A-A of FIG. 13;

in fig. 15 is a cross-section along the line B-B of FIG. 13;

in fig. 16 is a longitudinal section of the nozzle of FIG. eleven;

in fig. 17 is one plate of the nozzle of FIG. 11, side view; and

in fig. 18 is an example of a device for hot styling hair with the help of air, to which a nozzle can be attached, side view.

The implementation of the invention

FIG. 1 shows the appearance of the nozzle 10 according to the present invention. The nozzle 10 includes a fluid inlet 20 for receiving a stream of air from the outlet end for the air stream of a device for hot styling hair with air or a similar device. The fluid inlet 20 has a generally circular shape to provide an air-tight connection to the generally circular output end of the device for hot hair styling with air.

The nozzle 10 is essentially cylindrical and extends longitudinally from the inlet 20 for the fluid to the far end 30, preferably continuing the line described by the device for hot hair styling with air. This nozzle has an elongated main part 12 with a first end 14 and a second end 16. The elongated plates 40 extend from the first end 14 to the second end 16, and the elongated slots 50 located between adjacent plates 40 represent the fluid outlet of said nozzle. The far end 30 of the nozzle 10 contains a cold tip 32.

In this embodiment of the invention, the nozzle 10 has a constant diameter d ₁ over at least part of the elongated main part 12, which is less than the diameter d _{f of the} inlet 20 for the fluid.

FIG. 2a, 2b and 2c are an exploded view and an isometric view of a preferred embodiment of the nozzle 10, showing some internal features, with the details shown also being the preferred component parts of the assembly. FIG. 2a and 2b show the first node 100 of the device, which is formed by a central cylindrical cell structure 60 and which is shown as comprising six elongated support columns 62. These six elongated support columns 62 extend between the annular shoulder 64 at the inlet 20 for the fluid of the central cylindrical cell structure 60 and end wall 66 at the second end 24 of the central cylindrical cell structure 60. Ring collar 64 extends from the connecting ring 68. The connecting ring 68 serves to connect the nozzle 10 to the device ystvom hot styling hair by means of air or a similar device. The end wall 66 includes a protruding ring 26 for mounting the cold tip 32 by means of projections 28 radially around the cold tip 32. The fluid outlet is formed by slots 50 extending from the adjacent annular shoulder 64 to the end wall 66 at the second end 24 of the central cylindrical cage structures 60.

The second device assembly 110 is formed by six separate plates 40, as shown in FIG. 2c. When manufacturing the nozzle, the second device node 110 is attached to the first device node 100. In one preferred embodiment of the invention, each of the plates 40 is attached to the rack 62 with the formation of extended plates 54 (see Fig. 5), which forms an elongated main part 12, which extends between the annular collar 64 and the second end 24 of the central cylindrical cell structure 60. Elongated the main part 12 has a first end 14, which is adjacent to the annular shoulder 64, and a second end 16, which is adjacent to the end wall 66 of the central cylindrical cell structure 60. The elongated main part 12 is about olzhaetsya as far as the rack 62, the plate 40 and elongated slot 50. The annular collar 64 and the connecting ring 68 forming part of the central cylindrical cell structure 60, but not elongated main body 12.

The annular flange 64 is flat and annular, with the annular flange extending outward from the elongated main part and having a diameter that is larger than the diameters of the connecting ring 68, the elongated main part 12 and the cylindrical cage 60. The annular flange 64 is located essentially perpendicular to the longitudinal axis X-X of the nozzle which is also the longitudinal axis of the elongated main part 12.

For attaching the first assembly of the device to the second assembly of the device, each plate 40 is attached to the rack 62. Each rack 62 has several features that are intended to receive connecting signs located on the inner side of each plate 40. More specifically, three structural vanes 70 extend from the leading edge 62a of each rack 62 at uniform intervals and connected to the outer surface 72 of the immediately adjacent rack. The inner surface 42 of each plate 40 comprises three recesses 44 which are intended to receive structural vanes 70. In yet another embodiment of the invention, both ends of the outer surface 72 of each rack contain a notch 74 which is intended to receive a protrusion 46, such protrusions located at both ends the inner surface 42 of each plate 40. In addition, each leg 62 includes a longitudinal protrusion 76 extending from the leading edge 62a. Each plate 40 contains an interacting longitudinal protrusion 48. In this embodiment of the invention, the cooperative longitudinal protrusion 48 is formed as a continuation of three recesses 44, providing local thinning of the plate 40. The longitudinal protrusion 76 of the stand 62 also is, in fact, a refined part of the stand 62. When the plate 40 attached to the rack 62, an expanded plate 54 is formed (see Fig. 5), the longitudinal protrusion 76 interacts with the interacting longitudinal protrusion 48 to position the plate 40 relative to one hundred iki 62. In one preferred embodiment of the invention, when the plate 40 is attached to the stand 62, the outer surface 72 of the stand 62 in the transverse direction continues with the outer surface 52 of the plate 40.

In one preferred embodiment of the invention, for fastening and positioning the plates 40, in addition to the auxiliary elements mentioned, additional fastening means such as ultrasonic welding or gluing can be used. Preferably, the parts are welded along the length of the protrusions and the three recesses 44. This provides air-tightness at the leading edge 62a of each rack 62, causing the air to exit from the elongated slots 50.

As shown in FIG. 2b and 2c, a plurality of blades 100 are located on the inner surface 42 of each plate 40. More specifically, the blades 100 are located along the leading edge 42a of each plate 40 in transverse orientation relative to the longitudinal axis X-X of the nozzle. In one preferred embodiment of the invention, the blades 100 are distributed along the length of the plate 40 at intervals where the receiving recesses 44 are present. From the first end 14 to the second end 16, the blades 100 gradually decrease in length and height, as well as the angle of inclination to the perpendicular to the front the edge 42a of the plate 40.

Structural vanes 70 additionally perform the function of flow direction. Thus, the structural blades perform a structural function and the function of turning the flow. Structural blades 70 have the same angle and profile as the blades 100 adjacent to each structural blade 70.

The blades 100 and structural blades 70 are optimized to reduce the air pressure and reduce the air volume along the length of the elongated main part 12 from the fluid inlet 20 to the second end 16 in order to provide air flow from the slit 50 with a uniform volume and in the direction along the slit 50 length.

FIG. 3 shows a side view of the nozzle. The profile of the leading edge of each plate is not parallel to the longitudinal axis X-X of the nozzle. More specifically, each plate twists around the longitudinal axis X-X of the nozzle, forming a spiral structure. Preferably, the slits are bent through an angle of 45 ° relative to the longitudinal axis X-X of the nozzle. In this example, the slits 50 are bent in a counterclockwise direction from the first end 14 towards the second end 16. The slits 50 are formed between adjacent overlapping extended plates 54, 54a, however, for the formation of curved slits, the plate 40 does not continue along the longitudinal axis of the nozzle and preferably bent to an angle of 45 °.

FIG. The 3 vanes 100, located on the inner surface of one particular plate 40, are visible through the gap between two adjacent plates. In the shown preferred embodiment of the invention, the diameter of the elongated main part 12 at the first end 14 is larger than at the second end 16. More specifically, the lamellar structure expands outward toward the first end 14 of the elongated main part 12.

In this view, the nozzle in FIG. 3 shows protrusions 76 evenly spaced on a connecting ring 68 for making a snap-fit connection with the output end for the fluid of the device for hot hair styling with air or the like. Alternatives of attachment, such as screw or pressure means, are clear to the person skilled in the art.

FIG. 4 shows a cross-sectional view along the line A-A of the elongated main portion 12. This cross-section shows six expanded plates 54, each expanded plate 54 containing one plate 40 and one leg 62, but this section does not pass through structural vanes 70 or vanes 100. The output 58 for the fluid between the expanded plate 54 and the next expanded plate 54a is not constant across the width. More specifically, each expanded plate 54 has an arcuate cross-sectional shape, the radius of which is less than the radius of the entire elongated main part 12. As a result, each fluid outlet 58 has a minimum size on the corresponding outlet slit 50. Although the fluid outlet 58 narrows towards each slit 50, the thickness of the expanded plate 54 remains substantially constant. As a result, each element of the longitudinal protrusion 76 and the interacting longitudinal protrusion 48 has about half the thickness of the plate 40 and the rack 62.

The air flow coming out of each slit 50 is directed tangentially to the outer surface 54b of the expanded plate 54 and is connected to the airflow coming out of the other slits, thus forming a continuous path 78 for the fluid around the nozzle circumference. The air flow leaving the slots 50 is attracted to the curved surface of the nozzle due to the Coanda effect. This, in turn, leads to the fact that present at the nozzle 10 hair affects the air flow, winding them on the cylindrical surface of the nozzle 10. In particular, the tips of the hair curls present at the nozzle 10, are attracted to the outer surface of the nozzle 10 and further curls hair is wound around the nozzle 10. As the air blows along the length of the hair, wet hair dries quickly. It is advisable that this winding process be carried out without the use of bristles, and thus the hair can slide off the nozzle when it has dried or laid, so that there is no hair entanglement.

The air flow out of the slots is essentially perpendicular to the slots 50, however, it is preferable that the air flow is inclined towards the fluid inlet 20 at an angle of about 2.5 to 4.5 °. In this example, an angle of 3.5 ° is used. The combination of the curved slot 50, the blades 100 and the structural blades 70 generates the specified angle of inclination of the air flow. This causes the hair to spiral out from the nozzle towards the fluid inlet 20, which allows curled hair to naturally fall from the nozzle 10 when the user either removes the nozzle 10 from the curls of the hair or turns off the device.

FIG. 5 shows an additional cross section along the line B-B of FIG. 3 of the elongated main part 12. The said cross section passes through the blade 100 on each expanded plate 54. A spiral in the longitudinal direction of the fluid outlet slits can be seen, since the position of each expanded plate 54 is rotated relative to FIG. 4. When the blade 100 on the expanded plate 54 is in contact with the adjacent expanded plate 54a, the air flow is restricted or stopped.

FIG. 6 shows a cut along the longitudinal axis of the nozzle 10, thereby showing the inner surface of several racks 62. The inner space of the cold tip 32 is hollow to provide a relatively cooler place for the user to touch or grip the nozzle. The gap between the bottom of the cold tip 32 and the second end 16 of the elongated main part 12 minimizes heat transfer to the cold tip 32, and also preferably allows for manufacturing tolerances to exist between the parts.

The cold tip 32 includes a handle 34 and an annular flange 36. The handle 34 is hollow and in this embodiment is filled with air to isolate the handle 34 from the hot fluid that flows in the nozzle 10. The annular flange 36 has an annular recess 38 to provide between the second end 16 of the elongated main part 12 and the cold tip 32 of the air gap 80, which extends circumferentially around the annular flange 36. We can assume that the elongated main part 12 has external walls ku 82 formed from plates 40; the annular flange 36 is located at a distance from the outer wall 82. The air gap 80 is of sufficient size so that it is continuous around the annular flange 36, even taking into account manufacturing tolerances.

FIG. 3 through 6 on the first end of the nozzle, the expanding profile of the elongated main part 12 is visible. Such an expansion is not present in all embodiments of the present invention. The presence or absence of expansion is determined by the ratio of the diameters of the nozzle and the device for hot hair styling using air or a similar device to which the nozzle is attached. If the diameter of the nozzle is smaller than the diameter of the device for hot hair styling using air or a similar device, then the expansion is present to minimize the turbulence and to change the diameter when moving from the device to the nozzle. More specifically, such an extension is provided in one embodiment of the invention in which the diameter of the elongated main part is 30 mm, and is not provided in one embodiment of the invention in which the diameter of the elongated main part is 40 mm. This expansion serves to reduce turbulence and, thus, contributes to the initial attraction of the end of the hair strand to the first end of the nozzle.

The elongated main part 12 narrows from the first end 14 towards the second end 16. This decrease in diameter continues from the first end 14 to point Y, and from point Y to the second end 16 the diameter of the elongated main part 12 is constant. The purpose of the restriction is to ensure a smooth transition from the diameter at the inlet 20 for the fluid to the diameter at the second end 16 of the elongated main part 12. Any turbulence in the air that flows in the nozzle 10 is minimized, which also reduces the pressure drop in the nozzle 10. This preferably causes the tips of the curls of the hair to rest against the outer surface of the nozzle.

The view from the top of the nozzle example in FIG. 7 shows that the annular bead 64 near the fluid inlet of the nozzle has a larger diameter compared to the cold tip 32 at the far end 30. A view of the one hundred side of the base of the example nozzle in FIG. 8 shows the formation of an overlay for each expanded plate 54.

Ring collar 64 performs several functions. The collar 64 helps keep the hair on the nozzle 10 when it is wrapped around the nozzle 10, which is done by having a physical barrier to the hair and by preventing the hair from winding around part of the nozzle 10 or, in fact, around the device behind the ring collar 64. Another function is in protecting the flow of air around the nozzle 10. Continuous path 78 for the fluid around nozzle 10 captures or attracts air outside the slots 50. This trapped air is not necessarily directed tangentially to An outer surface 54b of the expanded plate 54, which can adversely affect the process of winding hair. The annular bead 64 has a large diameter compared to the first end 14 of the elongated main part 12, therefore it acts as a barrier to air trapped above the surface of the device and flowing towards the nozzle 10.

FIG. 9 shows one preferred embodiment of the inner surface 42 of a single plate 40 comprising twelve vanes 100 that are located as close as possible to the front edge 42a of the plate 40. The vanes 100 are spaced apart by two main groups of five vanes each. The recesses 44 for receiving the structural vanes 70 are located on the rear edge 42b of the plate 40 in the spaces between the groups of vanes. The blades 100 are located generally perpendicular to the front edge 42a of the plate 40. In one preferred embodiment of the invention, the blades 100 located near the upstream end of the nozzle are located at an acute angle to the front edge 42a of the plate 40. The preferred length of the blade 100 is such as to substantially fill a slot 50 formed by overlaying 84 one extended plate 54 and an adjacent extended plate 54a.

The profile of each blade 100 is streamlined and designed to change the direction of flow from the first direction to the second direction from the slit 50. Air enters the fluid inlet parallel to the longitudinal axis X-X of the nozzle 10; This is the first direction. The air flowing through the nozzle 10 naturally rotates from the specified axis towards the slit 50, but this is the result of the joint effect of the blades 100 profile and the curvature of the slits 50 on the air flow, which generates a second flow direction, which, as described above, is preferably slightly inclined to the inlet 20 for the fluid, as this contributes to the good winding of hair and curls, which are easily removed from the nozzle 10.

The blades 100 can be located at the same distance from each other along the length of the plate 40, however, to achieve a smooth flow from the slot 50 along the elongated main part 12, it is preferable that the blades 100 are unevenly spaced and located farther from each other end 14 and closer to each other at the second end 16 of the elongated main part 12.

In addition, since the volume and pressure of air passing through the nozzle 10 varies from the first end 14 to the second end 16 of the elongated main part 12, the vanes 100 gradually decrease from the first end 14 to the second end 16 of the elongated main part 12. The angle of the vanes 100 relative to the longitudinal axis X-X of the nozzle 10 varies from the first end 14 to the second end 16 of the elongated main part 12. Preferably, the angle relative to the longitudinal axis X-X of the nozzle 10 increases from the first end 14 to the second end 16 of the elongated main part 12.

FIG. 10 shows a side view of the plate 40, on which the spiral, relative to the longitudinal axis, of each plate is visible. The magnitude of the spiral rotation of the plate 40 depends on a combination of such signs as, among other things, the number of plates, the diameter of the nozzle, the profile of the blades and the desired angle of the output fluid flow relative to the longitudinal axis of the nozzle.

FIG. 11 to 17 show a second embodiment of the invention. In this embodiment of the invention, the components shown and already described with reference to FIG. 1 to 10 are denoted by the same reference numerals. In this second embodiment of the invention, the diameter of the nozzle 150 is 40 mm. Thus, the diameter of the nozzle 150 is larger than the diameter of the connecting ring 68 and the inlet 20 for the fluid in the nozzle 150. The cross-sectional area of the nozzle 150 is larger than the cross-sectional area of the inlet 20 for the fluid. The diameter d _{2 of the} nozzle 150 is larger than the diameter d _{f of the} inlet 20 for the fluid.

Since the volume of air entering the nozzle 150 increases in the nozzle at the first end 14 of the elongated main part 112, some air will flow towards the supply 160 located between the connecting ring 68 and the outer wall 182 of the nozzle 150. Thus, some the amount of air leaving the gap 50 will flow towards the fluid inlet 20 until the flow direction changes. So that this recirculation does not negatively affect the direction of air flow from the slots 50, at least the first blade 170, which is a blade adjacent to the first end 14 of the elongated main part 112 and located near the fluid inlet 20, is inverted relative to all other blades 100 .

This provides two functions: firstly, it maintains the advantage of providing flow from the slit 50, which is uniform in volume and direction along the length of the slit 50, as in the previous embodiment of the invention, and, secondly, one of the functions is performed the annular shoulder 64 of the first embodiment of the invention, namely, the hair is kept on the nozzle 150 due to the provision of an air barrier at the first end 14 of the elongated main part 112. Due to this air barrier, for this second That embodiment of the invention, when the nozzle 150 has a large diameter compared with the entrance 20 for the fluid, the annular flange 164 has a diameter that coincides with the diameter of the outer wall 182. Since this nozzle 150 has a surface area that is larger than the surface area of the previously described nozzle 10, hair is more easily attracted to the outer surface 182, so that the problem of the negative impact of trapped flow above the surface of the device flowing towards the nozzle 150 is less obvious.

The first blade 170 has a streamlined shape and a concave surface 172 and a convex surface 174. The blades 100 also have a concave surface 102 and a convex surface 104. To turn the air flowing from the slit 50, towards the fluid inlet 20, there is a concave surface 102 of the blades 100, facing fluid inlet 20, which smoothly directs the fluid or ensures its smooth passage in a second direction. The presence of a smooth transition reduces the pressure drop, turbulence and noise in the nozzle.

In contrast, the first blade 170 has a convex surface 174 facing the fluid inlet 20. This is ensured due to the recirculation of air to the ledge 160, therefore, the concave surface 172 of the first blade 170 still directs the air flow in a manner similar to the blades 100. The functionality and the effect of this are similar, as the direction of the fluid has changed.

The first blade 170, together with the paddles 100, is configured to change the direction of the fluid flowing in the nozzle 150 from the first direction to the second direction when exiting the slot 50. As described above, air enters the fluid inlet parallel to the longitudinal axis X-X of the nozzle 150; This is the first direction. The air flowing through the nozzle 10 will naturally turn from the axis towards the slot 50, and in this nozzle 150 the air near the fluid inlet 20 turns further than necessary. To achieve a smooth flow along the length of the nozzle 150, as described above, the combined effect of the profile of the first blade 170, blades 100 and curvature of the slots 50 on the air flow generates a second flow direction, which, as described above, is preferably slightly inclined to the fluid inlet 20, as this contributes to good winding of hair and curls, which are easily removed from the nozzle 10.

An additional feature of the nozzle 150 is that each leg 62 contains a stiffening element. Preferably, the first device assembly 100 is manufactured as a single piece by injection molding. For the nozzle 10, since the elongated main part 12 expands towards the fluid inlet 20, there is a natural narrowing towards the second end 16, which is used in the manufacturing process to at least partially create the thrust needed to remove the central shape from the nozzle 10. For nozzle 150, since the diameter d _{2 is} larger than the diameter d _{f of the} fluid inlet 20, there is a groove created during manufacture. For this reason, in the nozzle 150 there is a local thickening 162 of the column 62 on the radially inner surface 162a at the entrance end 86 of the overlay 84.

The local thickening 162 can be viewed as a stiffener, protrusion or bulge that extend along the entire length of the pillar 62. Next to the fluid inlet 20, the local thickening 162 has a rounding or inclined surface 166 that guides the fluid entering the nozzle 150 from the connecting rings 68 at the end of the local thickening 162.

The bending of the local bulge 162 further directs the flow along the trailing edge 62b of the column 62 towards the overlay 84 and the slit 50.

FIG. 18 shows an example of a device 200 for hot styling hair with air along with a nozzle 10. Device 200 for hot styling hair with air contains a tubular handle 220 in general with fluid inlet 230 at opposite ends and a fluid outlet 240. At the fluid inlet 230 of the handle, around the handle 220 and partially along the handle 220, an array of holes 232 is located. Inside (not shown) the fan unit includes a fan and a motor. In use, the engine drives the fan, and air is drawn in through the fluid inlet 20 of the fluid inlet 20, along the path for the fluid flow, which continues along the length of the handle 220. The fluid, if desired, is heated by a heater (not shown) before leaving from the device for hot hair styling with air at the outlet 240 for the fluid. The fluid inlet 20 of the nozzle 10 according to the present invention is connected to the fluid outlet 240 of the hot hair styling device 200 with air or a similar device, while the fluid inlet 20 receives the fluid drawn by the engine. Next, the fluid exits the nozzle 10 through the slots 50. The device 200 can be connected to a source of electrical energy using an electric cable or it can contain batteries in the handle 220.

It is clear to a person skilled in the art that manufacturing and assembly in accordance with the present invention can be implemented in many different ways. In the embodiment of the invention shown in FIG. 2, the possible component parts of the assembly are shown as an elongated main part 12 comprising six elongated support columns, six separate plates and a cold tip. However, the elongated main part 12 may, in turn, be made of several additional components of the device assembly. In one alternative embodiment of the present invention, the extruded core 12 may contain three fixed plates, and additional three separate plates may be attached to the cell structure. It is clear that regardless of the number of plates present in one embodiment of the invention, similar manufacturing and assembly methods can be used.

The preferred method of manufacturing nozzles 10, 150 is injection molding, however, this is not essential for the idea of the invention and suitable alternatives are clear to the person skilled in the art.

The diameter of the nozzle 10, 150 may either coincide with the diameter of the device to which the nozzle is attached, and not coincide with the specified diameter. Some of the features of the invention described herein may be used regardless of diameter, for example, the location of the cold tip, various device assemblies, and the use of blades.

Although the diameter of the nozzle is shown different from the diameter of the device to which it is attached, in general, both the inner diameter and the outer diameter differ.

The blades 100, 170 are shown as part of the plate 40, however, they can be made as part of the rack 62. The recesses 44 for receiving structural vanes 70 are shown connected to the longitudinal protrusion 48, however, they can be separated.

The invention has been described in detail for a hot hair styling brush, however it is applicable to any appliance that draws in fluid and directs the output fluid flow from the appliance, including a hair dryer to dry the hair.

The device can be used with or without a heater; the action of the fluid flow at high speed has a drying effect.

The fluid that flows through the device is generally air, but it may be a different combination of gases or gas and may contain additives to improve the performance of the device, or the device’s effect may be aimed at creating an output stream in the direction of, for example, hair and can be directed on styling this hair. Such additives can be, among other things, for example, hair spray and serum.

The invention is not limited to the above detailed description. The possible changes are clear to the person skilled in the art.

Claims (25)

1. A hair care attachment nozzle comprising a main part having a fluid inlet, a fluid outlet, a fluid flow path extending between the fluid inlet and the fluid outlet, the first guide device and the second guide device the direction of the fluid in the path of the fluid flow towards the outlet for the fluid, while the main part contains at least two expanded plates, and the outlet for the fluid contains a slit formed by laying on m At least two expanded plates, wherein the first guide device and the second guide device are bent and arranged within the overlap of at least two expanded plates, with the first guide device and the second guide device bent in opposite directions. 2. The nozzle of claim 1, wherein the fluid inlet has a first cross-sectional area, the main part comprising an outer wall, the outer wall of the main part having a second cross-sectional area, the second cross-sectional area being larger than the first cross-sectional area . 3. The nozzle according to claim 1 or 2, in which the fluid inlet has a diameter d _f , and the nozzle has a diameter d ₂ , wherein d _{2 is} greater than d _f . 4. Nozzle according to any one of paragraphs. 1-3, in which the main part is elongated and continues along the axis. 5. The nozzle according to claim 4, in which the main part has a first end and a second end, while the input for the fluid is located at the first end. 6. Nozzle according to any one of paragraphs. 1-5, in which the first guide device is located near the entrance for the fluid. 7. Nozzle according to any one of paragraphs. 1-6, in which the first guide device has a convex surface, with the convex surface facing the inlet for the fluid. 8. The nozzle according to claim 7, in which the second guiding device has a concave surface, with the concave surface facing the fluid inlet. 9. Nozzle according to any one of paragraphs. 1-8, in which the first guide device and the second guide device have a streamlined shape. 10. Nozzle according to any one of paragraphs. 1-9, in which the output for the fluid continues along the axis between the first end and the second end. 11. The nozzle according to claim 10, in which the second guiding device comprises a plurality of blades spaced apart from each other along the expanded plates. 12. The nozzle according to claim 11, in which a plurality of vanes are arranged unevenly along the expanded plates. 13. Nozzle under item 11 or 12, in which many of the blades are angled to the axis of the main part. 14. The nozzle according to claim 13, wherein the angle of at least some of the blades of the plurality of blades is different from the angles of the adjacent blades. 15. The nozzle according to claim 14, in which the angle of the blades of the plurality of blades relative to the specified axis increases towards the second end. 16. Nozzle according to any one of paragraphs. 11-15, in which the size of the blades of the plurality of blades varies along the expanded plate. 17. Nozzle under item 16, in which all the blades of the many blades have the same profile. 18. Nozzle according to any one of paragraphs. 11-17, in which at least one blade has essentially the same length as the overlay of at least two expanded plates. 19. Nozzle according to any one of paragraphs. 1-18, in which the slit is bent relative to the axis of the main part. 20. The attachment according to claim 19, in which each expanded plate is formed from a stand and a plate. 21. The attachment according to claim 20, in which the slit is formed by a rack and a plate of adjacent extended plates. 22. Nozzle under item 21, which further comprises at least one structural blade. 23. Nozzle under item 22, in which at least one structural blade connects adjacent racks. 24. The nozzle according to claim 22 or 23, in which at least one structural blade connects the stand and plate. 25. Nozzle according to any one of paragraphs. 1-24, while the device for hair care is a device for hot hair styling.

Images