Hand dryer

Patent metadata

Field	Value
Publication number	US-10006711-B2
Application number	US-201314085284-A
Country	US
Kind code	B2
Filing date	Nov 20, 2013
Priority date	Nov 21, 2012
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The invention relates to a hand dryer for drying a user's hands by means of an airflow discharged through an air outlet on the hand dryer. The airflow is generated by a motor-driven fan unit. The hand dryer comprises a plurality of air intakes, the air intakes being connected to the fan unit to form a plurality of parallel air-intake paths. Each air intake path is provided with a separate air-filter. The air-filters may be replaceable for individual replacement as required.

First claim

The invention claimed is:

1. A hand dryer for drying a user's hands by an airflow discharged through an air outlet on the hand dryer, the airflow being generated by a motor-driven fan unit, the hand dryer comprising:
a plurality of air intakes, the air intakes being connected to the fan unit to form a plurality of parallel air-intake paths, each air intake path being provided with a separate air-filter;
an outer filter cover associated with each filter comprising a plurality of slots forming a filter inlet for the respective filter, the outer filter cover positioned in-between the respective filter and the respective air intake; and
an inner filter cover associated with each filter comprising a plurality of apertures forming a filter outlet for the respective filter, the inner filter cover positioned in-between the respective filter and the fan unit, the filter inlet and filter outlet being off-set to prevent line-of-sight through the filter inlet and the filter outlet.

2. A hand dryer for drying a user's hands by an airflow discharged through an air outlet on the hand dryer, the airflow being generated by a motor-driven fan unit, the hand dryer comprising a plurality of air intakes, the air intakes being connected to the fan unit to form a plurality of parallel air-intake paths, each air intake path being provided with a separate air-filter, the hand dryer further comprising an air intake on one side of the hand dryer (when the hand dryer is viewed front-on) and an air intake on the opposite side of the hand dryer, the respective air-filters being arranged on respective sides of the fan unit, an outer filter cover associated with each filter comprising a plurality of slots forming a filter inlet for the respective filter, the outer filter cover positioned in-between the respective filter and the respective air intake, an inner filter cover associated with each filter comprising a plurality of apertures forming a filter outlet for the respective filter, the inner filter cover positioned in-between the respective filter and the fan unit, the respective filter inlets and filter outlets being off-set to prevent line-of-sight through the respective filter inlet and filter outlet.

3. The hand dryer of claim 2 , wherein the filters are planar and are arranged with their planes facing one another.

4. A hand dryer for drying a user's hands by an airflow discharged through an air outlet on the hand dryer, the airflow being generated by a motor-driven fan unit wherein a top of the fan unit is located at a first height and the bottom of the fan unit is located at a second height, the hand dryer comprising:
a plurality of air intakes, the air intakes being connected to the fan unit to form a plurality of parallel air-intake paths, each air intake path being provided with a separate air-filter, and at least a portion of each filter is located between the first height and the second height;
an outer filter cover associated with each filter comprising a plurality of slots forming a filter inlet for the respective filter, the outer filter cover positioned in-between the respective filter and the respective air intake; and
an inner filter cover associated with each filter comprising a plurality of apertures forming a filter outlet for the respective filter, the inner filter cover positioned in-between the respective filter and the fan unit, wherein the filter inlet and filter outlet are off-set to prevent line-of-sight through the filter inlet and the filter outlet.

5. The hand dryer of claim 4 , in which the filters are replaceable filters which are individually replaceable.

6. The hand dryer of claim 4 , in which the filters are planar.

7. The hand dryer of claim 6 , in which the filters are arranged with their planes facing one another.

8. The hand dryer of claim 7 , in which the filters are arranged substantially plane parallel.

9. The hand dryer of claim 4 , in which the filters are arranged adjacent the fan unit.

Assignees

• Dyson Technology Ltd

Inventors

• Gammack Peter David
• Ryan Leigh Michael
• Steele Stuart James
• Courtney Stephen Benjamin

Classifications

• F26B21/003 Primary

  Air or gas filters · CPC title

• A47K10/48 Primary

  Drying by means of hot air · CPC title

• B01D46/4236

  Reducing noise or vibration emissions · CPC title