Haircare appliance

Patent metadata

Field	Value
Publication number	US-2023413969-A1
Application number	US-202118034648-A
Country	US
Kind code	A1
Filing date	Oct 14, 2021
Priority date	Nov 2, 2020
Publication date	Dec 28, 2023
Grant date	—

Abstract

A haircare appliance is described having first and second arms that define a hair treatment chamber, an infrared emitter configured to emit infrared radiation into the hair treatment chamber, and an airflow generator configured to generate an airflow within the hair treatment chamber. The hair treatment chamber includes a minimal width of greater than 5 mm.

First claim

1 . A haircare appliance comprising first and second arms that define a hair treatment chamber, an infrared emitter configured to emit infrared radiation into the hair treatment chamber, and an airflow generator configured to generate an airflow within the hair treatment chamber, wherein the hair treatment chamber comprises a minimal width of greater than 5 mm.

2 . The haircare appliance as claimed in claim 1 , wherein the airflow generator is be configured to generate airflow at a flow rate of greater than 4 L/s.

3 . The haircare appliance as claimed in claim 1 , wherein the first and second arms are movable relative to one another to selectively vary a width of the hair treatment chamber.

4 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter is configured to emit infrared radiation comprising a peak wavelength greater than 900 nm.

5 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter is configured to emit infrared radiation comprising a peak wavelength in the region of 1000-3500 nm.

6 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter extends along at least 50% of the length of the hair treatment chamber.

7 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter is located in one of the first and second arms, and the haircare appliance comprises a further infrared emitter located in the other of the second and first arms.

8 . The haircare appliance as claimed in claim 7 , wherein the further infrared emitter extends along at least 50% of the length of the hair treatment chamber.

9 . The haircare appliance as claimed in claim 1 , wherein one of the first and second arms comprises an air outlet through which airflow from the airflow generator is discharged into the hair treatment chamber.

10 . The haircare appliance as claimed in claim 9 , wherein the air outlet comprises a length greater than or equal to a length of the infrared emitter.

11 . The haircare appliance as claimed in claim 9 , wherein the air outlet comprises a single aperture.

12 . The haircare appliance as claimed in claim 9 , wherein the air outlet has a maximal width of less than 4 mm.

13 . The haircare appliance as claimed in claim 9 , wherein the haircare appliance comprises an air inlet, the airflow generator is configured to generate airflow from the air inlet to the air outlet along an airflow path, and the infrared emitter is disposed in the airflow path.

14 . The haircare appliance as claimed in claim 9 , wherein the other of the second and first arms comprises a further air outlet through which airflow from the airflow generator is discharged into the hair treatment chamber.

15 . The haircare appliance as claimed in claim 14 , wherein the further air outlet comprises a length greater than or equal to a length of the infrared emitter.

16 . The haircare appliance as claimed in claim 14 , wherein the further air outlet comprises a single aperture.

17 . The haircare appliance as claimed in claim 14 , wherein further the air outlet has a maximal width of less than 4 mm.

18 . The haircare appliance as claimed in claim 1 , wherein each of the first and second arms comprises a hair contacting rib.

19 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter comprises an incandescent source of infrared radiation.

20 . The haircare appliance as claimed in claim 1 , wherein the infrared emitter is configured to output infrared radiation comprising a power density greater than 10 W/cm 2 .

21 . The haircare appliance as claimed in claim 1 , wherein the haircare appliance comprises a first mode of operation in which the infrared emitter is configured to output infrared radiation comprising a first power density, and a second mode of operation in which the infrared emitter is configured to output infrared radiation comprising a second power density less than the first power density, and the first power density is greater than 10 W/cm 2 .

22 . The haircare appliance as claimed in claim 21 , wherein the airflow generator is configured to generate airflow at a first flow rate in the first mode of operation, and at a second flow rate less than the first flow rate in the second mode of operation.

23 . The haircare appliance as claimed in claim 1 , wherein the haircare appliance comprises a temperature sensor configured to sense a temperature of hair within the hair treatment chamber in use, and a controller configured to modify power supplied to the infrared emitter in response to an output of the temperature sensor.

Assignees

• Dyson Technology Ltd

Inventors

• Beaumont Rory William
• Coulton Robert Mark Brett
• Imhasly Nathan Haruna Waters

Classifications

• A45D2/001 Primary

  Hair straightening appliances · CPC title

• A45D2200/205

  Radiation, e.g. UV, infrared · CPC title

• A45D1/06 Primary

  with two or more jaws (A45D1/02 takes precedence) · CPC title

• A45D20/10

  Hand-held drying devices, e.g. air douches · CPC title

• A45D1/04

  by electricity · CPC title