Appliance for supplying heated air
AssigneeDyson Technology Limited
InventorsAnais Isabelle LEUNG-PIN, Maurizio BALLARATI
Life of this patent
Estimating the term…
Abstract
A hair care appliance is provided and includes a heater having a heating element, an airflow passage extending from an airflow inlet to an airflow outlet, and an air mover for moving airflow along the passage from the inlet to the outlet. The appliance further includes a thermal barrier at least partly surrounding the airflow passage so as to restrict heat transfer from the heater to an external surface of the appliance. The thermal barrier includes an inner wall proximal to the heater, an outer wall distal from the heater, and a sealed evacuated space defined between the inner and outer walls.
Claims26
A hair care appliance for applying heat to a user's hair, the appliance comprising:
- an airflow passage extending from an airflow inlet to an airflow outlet;
- an air mover for moving airflow along the airflow passage from the airflow inlet to the airflow outlet;
- a heater arranged to heat air in the airflow passage, the heater comprising a heating element;
- and
- a thermal barrier at least partly surrounding the heater, the thermal barrier comprising an inner wall proximal to the heater, an outer wall distal from the heater, and a sealed evacuated space defined between the inner and outer walls.
An appliance comprising:
- an airflow passage extending from an airflow inlet to an airflow outlet;
- an air mover for moving airflow along the airflow passage from the airflow inlet to the airflow outlet;
- a heater extending across the airflow passage, the heater comprising a heating element across which air in the airflow passage flows;
- and
- a thermal barrier at least partly surrounding the heater, the thermal barrier comprising an inner wall proximal the heater, an outer wall distal from the heater, and a sealed evacuated space defined between the inner and outer walls.
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A thermal barrier for an appliance, the thermal barrier comprising:
- concentrically arranged inner and outer tubular walls;
- a passage defined by the inner tubular wall and extending through the thermal barrier between opposing openings thereof;
- a sealed evacuated space defined between the inner and outer tubular walls;
- and
- a mounting portion for mounting a heater across the passage, the mounting portion in the form of a recess or protrusion formed in the inner tubular wall.
24-26. (canceled)
Dependencies are inferred from the claim text.