Rotary blower brush with improved ergonomics
A hairstyling device of the rotary blower brush type may include a handle having two zones of different diameters D 1 and D 2 . The first diameter is greater than the second (i.e., D 1 >D 2 ), such that the greater diameter can accommodate a compressor. The compressor facilitates a substantially constant air flow. The smaller diameter zone corresponds to a gripping zone that facilitates more ergonomic handling compared to known devices.
1. A rotary blower brush of length L comprising:
a handle, a heater, a first motor configured to drive a compressor, and a second motor configured to drive a cylindrical brush in rotation, the first motor, the heater, and the compressor being positioned in the handle, and the second motor being located outside the handle in a support rod; and
a plurality of straightening fins disposed downstream of a fan of the compressor, wherein the plurality of straightening fins are disposed on a housing of the first motor and an airflow exiting the compressor is guided by the plurality of straightening fins;
wherein the handle comprises two separate zones of different diameters, a first zone having a first diameter D 1 and a second zone having a second diameter D 2 , the first diameter D 1 being greater than the second diameter D 2 , the first zone of diameter D 1 accommodating the compressor and the second zone of diameter D 2 corresponding to a gripping zone of the rotary blower brush.
2. The rotary blower brush according to claim 1 , wherein the diameter D 2 is 10% smaller than the diameter D 1 .
3. The rotary blower brush according to claim 1 , wherein the diameter D 2 of the gripping zone represents less than 15% of the total of length L.
4. The rotary blower brush according to claim 1 , wherein the compressor maintains a substantially constant flow rate between 300 and 1000 I/min.
5. The rotary blower brush according to claim 1 , wherein a ratio between a power of the heater in watts and an air flow rate of the compressor in I/min is between 1 and 2.5.
6. The rotary blower brush according to claim 1 , wherein the two motors are brushless motors.
7. The rotary blower brush according to claim 1 , wherein the handle comprises a temperature sensor disposed at an outlet of the handle and controlled by a heating power of the heater, allowing the rotary blower brush to avoid overheating.
8. The rotary blower brush according to claim 1 , wherein the cylindrical brush comprises air outlet openings arranged at least partially in concentric rings, a diameter of the rings decreasing progressively as one moves away from the handle.
9. The rotary blower brush according to claim 1 , wherein the handle comprises an ion generator located in an extension of the motor of the compressor.
10. The rotary blower brush according to claim 1 , wherein the support rod of the motor comprises a polygonal coupling element cooperating with the cylindrical brush of the rotary blower brush.
11. The rotary blower brush according to claim 1 , wherein the cylindrical brush of the rotary blower brush comprises a metal covered with a ceramic layer.
12. The rotary blower brush according to claim 1 , wherein a temperature sensor is disposed on the support rod so as to allow an air flow of the compressor and a heating power of the rotary blower brush to be adjusted based on a sensed temperature.
13. The rotary blower brush according to claim 1 , wherein the rotary blower brush comprises a system for detecting a type of the cylindrical brush, allowing an air flow of the compressor, a heating power of the rotary blower brush, and a rotation speed of the motor to be adjusted based on the type.
14. The rotary blower brush of claim 1 , wherein upstream ends of the plurality of straightening fins are curved.
15. The rotary blower brush of claim 14 , wherein the plurality of straightening fins are configured to direct the airflow through a length of the second zone.
16. The rotary blower brush of claim 1 , further comprising a plurality of radial attachment fins disposed on an upstream end of the support rod.
17. The rotary blower brush of claim 16 , wherein a downstream end of the handle comprises a pair of half-shells disposed around the attachment fins of the support rod.
18. The rotary blower brush of claim 17 , further comprising an outer assembly ring securing the pair of half-shells to the attachment fins of the support rod.
19. A rotary blower brush of length L comprising:
a handle, a heater, a first motor configured to drive a compressor, and a second motor configured to drive a cylindrical brush in rotation, the first motor, the heater, and the compressor being positioned in the handle, and the second motor being located outside the handle in a support rod; and
a plurality of radial attachment fins disposed on an upstream end of the support rod;
wherein the handle comprises two separate zones of different diameters, a first zone having a first diameter D 1 and a second zone having a second diameter D 2 , the first diameter D 1 being greater than the second diameter D 2 , the first zone of diameter D 1 accommodating the compressor and the second zone of diameter D 2 corresponding to a gripping zone of the rotary blower brush.
20. The rotary blower brush according to claim 19 , wherein the diameter D 2 is 10% smaller than the diameter D 1 .
21. The rotary blower brush according to claim 19 , wherein the diameter D 2 of the gripping zone represents less than 15% of the total of length L.
22. The rotary blower brush according to claim 19 , wherein the compressor maintains a substantially constant flow rate between 300 and 1000 I/min.
23. The rotary blower brush according to claim 19 , wherein a ratio between a power of the heater in watts and an air flow rate of the compressor in I/min is between 1 and 2.5.
24. The rotary blower brush according to claim 19 , further comprising a plurality of straightening fins disposed downstream of a fan of the compressor, wherein an airflow exiting the compressor is guided by the plurality of straightening fins.
25. The rotary blower brush of claim 24 , wherein the plurality of straightening fins are disposed on a housing of the first motor.
26. The rotary blower brush of claim 25 , wherein upstream ends of the plurality of straightening fins are curved.
27. The rotary blower brush of claim 26 , wherein the plurality of straightening fins are configured to direct the airflow through a length of the second zone.
28. The rotary blower brush according to claim 19 , wherein the two motors are brushless motors.
29. The rotary blower brush according to claim 19 , wherein the handle comprises a temperature sensor disposed at an outlet of the handle and controlled by a heating power of the heater, allowing the rotary blower brush to avoid overheating.
30. The rotary blower brush according to claim 19 , wherein the cylindrical brush comprises air outlet openings arranged at least partially in concentric rings, a diameter of the rings decreasing progressively as one moves away from the handle.
31. The rotary blower brush according to claim 19 , wherein the handle comprises an ion generator located in an extension of the motor of the compressor.
32. The rotary blower brush according to claim 19 , wherein the support rod of the motor comprises a polygonal coupling element cooperating with the cylindrical brush of the rotary blower brush.
33. The rotary blower brush according to claim 19 , wherein the cylindrical brush of the rotary blower brush comprises a metal covered with a ceramic layer.
34. The rotary blower brush according to claim 19 , wherein a temperature sensor is disposed on the support rod so as to allow an air flow of the compressor and a heating power of the rotary blower brush to be adjusted based on a sensed temperature.
35. The rotary blower brush according to claim 19 , wherein the rotary blower brush comprises a system for detecting a type of the cylindrical brush, allowing an air flow of the compressor, a heating power of the rotary blower brush, and a rotation speed of the motor to be adjusted based on the type.
36. The rotary blower brush of claim 19 , wherein a downstream end of the handle comprises a pair of half-shells disposed around the attachment fins of the support rod.
37. The rotary blower brush of claim 36 , further comprising an outer assembly ring securing the pair of half-shells to the attachment fins of the support rod.