Rotary attachment for a blow-drying hair styling device

Abstract

An air guiding attachment (1) designed to convert a substantially unidirectional first air flow (F1) of a hair cutting device (2) into a second air flow (F2) sweeping a plurality of different directions, the air guiding attachment comprising: a stator (11) extending along and around a stator axis (S-S') from a stator entry plane (PES) to a stator exit plane (PSS); a rotor (12) extending from a rotor entry plane (PER) to a rotor exit plane (PSR) and comprising a pneumatic drive means (121) designed to drive the rotor in rotation around the stator axis by means of the first air flow, the rotor comprising at least a portion extending along and around a sweeping axis (R-R') forming an intersection angle (β) with the stator axis comprised between 5 and 40 degrees; characterized in that the intersection point of the sweeping axis with the stator axis is comprised between the rotor entry plane and the stator exit plane.

Claims

1. An air guiding accessory (1) designed to be installed on an air outlet (28) of a hairdressing device (2), the air outlet (28) blowing a unidirectional first airflow (F1), the air guiding accessory (1) being designed to convert the first airflow (F1) into a second airflow (F2) sweeping in multiple different directions, the air guiding accessory (1) comprising: - An accessory air inlet (117) designed to cooperate with the air outlet (28) of the hairdressing device (2); - Attached air outlet (127) that allows the second airflow (F2) to be blown toward the user's head; - Stator (11), which extends along and around the stator axis (SS′) from the stator inlet plane (PES) to the stator outlet plane (PSS); - A rotor (12) extending from a rotor inlet plane (PER) to a rotor outlet plane (PSR) and including a pneumatic drive (121) designed to drive the rotor (12) to rotate about the stator axis (SS′) by means of the first airflow (F1); - The rotor (12) includes at least a portion extending along and around a sweeping axis (RR′), the at least portion being designed to orient the second airflow (F2) along the plurality of different directions, the sweeping axis (RR′) being an axis around which the second airflow (F2) will sweep in the plurality of different directions as the rotor (12) rotates; - The sweep axis (RR′) and the stator axis (SS′) form an intersection angle (β) between 5 degrees and 40 degrees; - The stator (11) and the rotor (12) are located between the accessory air inlet (117) and the accessory air outlet (127) and are connected to each other by fluid-tight connectors (116, 126); The feature is that the intersection point of the sweep axis (RR′) and the stator axis (SS′) is located between the rotor inlet plane (PER) and the stator outlet plane (PSS).

2. The air directing attachment (1) according to claim 1, characterized in that The rotor inlet plane (PER) is located upstream of the stator outlet plane (PSS) along the flow direction of the first airflow (F1).

3. The air directing attachment (1) according to claim 2, characterized in that The overlap length (L) between the rotor inlet plane (PER) and the stator outlet plane (PSS) is defined as being between 1 mm and 5 mm.

4. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The stator (11) includes the accessory air inlet (117) and is designed to be assembled on the air outlet (28) of the hairdressing device (2).

5. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The rotor outlet plane (PSR) includes the accessory air outlet (127).

6. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The swept axis (RR′) and the stator axis (SS′) intersect in a transition plane (T) parallel to the rotor inlet plane (PER), and the stator axis (SS′) is orthogonal to the transition plane (T).

7. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The intersection angle (β) is between 5 degrees and 25 degrees.

8. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The rotor (12) is a truncated cone shape.

9. The air-guiding accessory (1) according to claim 8, characterized in that, The cone angle (γ) of the rotor (12) is between 5 degrees and 20 degrees.

10. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The stator (11) includes a hub retainer (1112) which is connected to the outer wall (113) of the stator via at least one arm (1111).

11. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The pneumatic drive (121) includes a hub (1212) which is connected to the outer wall (125) of the rotor via at least one blade (1211).

12. The air-guiding accessory (1) according to claim 10, characterized in that, The pneumatic drive (121) includes a hub (1212) which is mounted to pivotally connect with the hub retainer (1112).

13. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The air-guided accessory (1) includes at least a housing (13) surrounding the rotor (12), the housing (13) being integral with the stator (11) and designed to protect the rotor (12) from contact with the user.

14. The air-guiding accessory (1) according to claim 13, characterized in that, The shell (13) is truncated conical in shape.

15. The air-guiding accessory (1) according to claim 2, characterized in that, The overlap length (L) between the rotor inlet plane (PER) and the stator outlet plane (PSS) is defined as 3 mm.

16. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The stator (11) includes the accessory air inlet (117) and is designed to be detachably mounted on the air outlet (28) of the hairdressing device (2).

17. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The intersection angle (β) is equal to 18 degrees, or equal to 20 degrees, or equal to 22 degrees.

18. The air-guiding accessory (1) according to claim 8, characterized in that, The cone angle (γ) of the rotor (12) is equal to 16 degrees, or equal to 14 degrees, or equal to 6 degrees.

19. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The stator (11) includes a hub retainer (1112) which is connected to the outer wall (113) of the stator via three arms (1111).

20. The air-guiding accessory (1) according to any one of claims 1 to 3, characterized in that, The pneumatic drive unit (121) includes a hub (1212) which is connected to the outer wall (125) of the rotor by three blades (1211).

21. The air-guiding accessory (1) according to claim 14, characterized in that, The shell (13) has a shell cone angle (θ) between 25 degrees and 60 degrees.

22. The air-guiding accessory (1) according to claim 14, characterized in that, The shell (13) has a shell cone angle (θ) of 40 degrees.

23. A hair-cutting device, comprising: Hairdressing device (2) that blows a unidirectional first airflow (F1); And the air-guided accessory (1) according to any one of claims 1 to 22.

24. The hair-cutting device according to claim 23, characterized in that, The hair-cutting device (2) is a hair dryer.

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