Drum type laundry dryer

• US 4,557,058 A
• Filed: 05/22/1984
• Issued: 12/10/1985
• Est. Priority Date: 05/23/1983
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kinoshita, Hiroshi, Ozawa, Toru
• Primary Examiner(s): Schwartz, Larry I.
• Application Number:
  US06/612,808
• Time in Patent Office: 567 Days
• Field of Search: 34/82, 34/133, 432/105
• US Class Current: 34/82
• CPC Class Codes: D06F 58/02 having dryer drums rotating about a horizontal axis
• CPC Class Codes: D06F 58/22 Lint collecting arrangements

Abstract

A drum type laundry dryer has an outer frame, a drying drum rotatably supported by the outer frame and adapted to receive laundry to be dried, a fan for introducing air into the drying drum, a heater for heating air to be introduced into the drying drum, air outlet ports in the drying drum and a filter device adjacent to the air outlet ports. The filter device is formed by a net and a lint collector disposed in opposite relationship to the net. The lint collector is annular and spaced from the net a distance which is smaller in the inlet section of the lint collector than in an inner section thereof.

Claims

1. A drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum, means for establishing different filter areas on said filter means and a lint collector for receiving lint captured by said filter means, said filter means including a net-like filter section including a radially inner filter area adapted to be exposed to the laundry in said drying drum, said establishing means being disposed in closely spaced, opposed relationship to the portion of said net-like filter section radially outward of said radially inner filter area and operating to assure that, during operation of the laundry dryer, said portion of said net-like filter section has a radially outer area adapted not to be contacted by the laundry being dried and an intermediate filter area disposed between said radially inner and outer filter areas and adapted to be contacted by wet laundry being dried but not contacted by the laundry when the laundry has been substantially dried in said drying drum.

2. A drum type laundry dryer according to claim 1, wherein said filter means further includes a central boss section and an outer peripheral ring section, said radially inner and outer filter areas and said intermediate filter area being disposed between said central boss and outer peripheral ring sections.

3. A drum type laundry dryer according to claim 1, wherein said establishing means is contiguous with said lint collector and disposed inwardly of said lint collector.

4. A drum type laundry dryer according to claim 3, wherein said establishing means and said lint collector are integral and are detachably connected to said filter means.

5. A drum type laundry dryer according to claim 3, wherein said establishing means and said lint collector are detachable one from the other and said lint collector is movable outwardly.

6. A drum type laundry dryer according to claim 1, wherein the distance between said filter means and said establishing means is smaller than the distance between said filter means and said lint collector.

7. A drum type laundry dryer including an outer frame, a drying drum rotatably supported by said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means provided adjacent to said air outlet, wherein said lint collecting means comprises a filter means for capturing lint separated from laundry to be dried in said drying drum and a lint collector disposed upstream of said filter means in closely spaced, opposed relationship thereto, said filter means being adapted to be exposed to the laundry in said drying drum except for the section of said filter means covered by said lint collector, the spacing between said lint collector and said filter means being smaller in an inlet portion of said lint collector than in an inner portion thereof.

8. A drum type laundry dryer including an outer frame, a drying drum rotatably mounted in said outer frame and adapted to receive laundry to be dried, means for introducing air into said drying drum, means for heating the air to be introduced into said drying drum, an air outlet provided in said drying drum, and lint collecting means adjacent to said air outlet, wherein said lint collecting means comprises filter means for capturing lint separated from laundry being dried in said drying drum and a lint collector disposed upstream of said filter means in closely spaced, opposed relationship to part of said filter means, said filter means except for said part being exposed to the interior of said drying drum.