US20080235978A1 - Self-cleaning lint collector - Google Patents

Self-cleaning lint collector Download PDF

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Publication number
US20080235978A1
US20080235978A1 US12006881 US688108A US2008235978A1 US 20080235978 A1 US20080235978 A1 US 20080235978A1 US 12006881 US12006881 US 12006881 US 688108 A US688108 A US 688108A US 2008235978 A1 US2008235978 A1 US 2008235978A1
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Prior art keywords
lint
screen
frame
lint collector
collector according
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Abandoned
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US12006881
Inventor
Michael Epstein
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Michael Epstein
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00Domestic laundry driers
    • D06F58/20General details of domestic laundry driers
    • D06F58/22Lint collecting arrangements

Abstract

A lint collector for a dryer in which clothes are dried by heated air supplied to a rotating drum. The lint collector is made of a frame, a tubular screen rotatably mounted in the frame, a device for rotating the screen in the frame and an element attached to the frame for removing lint from the screen as the screen

Description

  • This application claims the benefit of Provisional Application 60/919,973 filed Mar. 26, 2007, the entire contents of which are incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • The present invention relates to clothes dryers, and more particularly lint collectors utilized in such cloths dryers.
  • Virtually all clothes dryers have a lint collector provided to trap lint from clothing so as to prevent the lint from accumulating in the exhaust duct of the dryer. The lint collectors are traditionally a screen or mesh material which allows air to pass through while trapping the lint on one side of the screen or mesh. The problem with these conventional prior art lint collectors is that they become blocked and clogged with lint fairly quickly. Furthermore, it is common for the dryer users to overlook cleaning the lint collector. This results in making the drying procedure very inefficient in that the airflow is reduced which necessitates that the dryer operate for a longer period of time in order to dry a load of clothing.
  • Some examples of prior art lint filters and related components can be seen in U.S. Pat. Nos. 4,720,925; 4,638,573; 5,675,908; 3,959,891; and 5,463,820. There are also a number of prior art systems for detecting when the lint screen is full of lint. One such patent is U.S. Pat. No. 6,971,186, which uses air flow sensors for triggering an alarm when the filter is clogged with lint.
  • There are also prior art devices for removing lint from a lint screen, as for example in U.S. Pat. No. 6,662,464. This device is completely separate from the dryer and requires the lint screen to be removed from the dryer and then inserted into a slot which has components for scraping the lint off of the screen.
  • U.S. Pat. No. 4,314,409 discloses an automatic lint screen cleaner and storage system. It is provided between the exhaust air outlet and the discharge port in the back of the dryer.
  • Another lint screen cleaner is disclosed in U.S. Pat. No. 4,462,170.
  • SUMMARY OF THE INVENTION
  • Accordingly, it is an object of the present invention to provide a lint collector which addresses the problems of the prior art, particularly the clogging of the filter and subsequent loss of drying efficiency.
  • Pursuant to this object, and others which will become apparent hereafter, one aspect of the present invention resides in a lint collector for a dryer, having a tubular screen mounted in a frame so as to rotate about an axis. The rotation can take place intermittently or continuously. Preferably the rotation is carried out mechanically by a spring-wound mechanism, similar to an egg timer, for example. However, the rotation can be provided by an electric motor.
  • A comb like scoop or scraper is arranged adjacent to the screen's surface so that as the screen rotates the lint which has collected on the surface of the screen is scraped therefrom.
  • This rotation of the tubular screen allows a clear screen to be present in the airflow through the dryer basket which results in a substantial reduction of drying time which in turns results in reduced cost and wear on the dryer itself.
  • In another embodiment of the invention, the frame forms a chamber for holding lint removed from the screen. Furthermore, the frame is configured to be insertable into an air duct in the vicinity of the dryer door.
  • In still another embodiment of an invention, the frame has two end plates connected together by an elongate base with two side walls that extend between the end plates. The side walls are spaced from one another so as to form an opening through which lint removed from the screen can pass.
  • The lint removing element extends between the two end plates so that there is an opening between the element and one of the side walls, into which opening the lint can enter once scraped from the screen.
  • Other features and advantages of the present invention will become apparent from the following description of the invention.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a perspective view of the inventive lint collector;
  • FIG. 2 shows the lint collector being mounted in a cloths dryer; and
  • FIG. 3 is a bottom view of the lint collector.
  • DETAILED DESCRIPTION OF THE INVENTION
  • As shown in FIGS. 1 and 3, the inventive lint collector has a frame 1 in which a tubular screen 2 is rotatably mounted. At one end of the frame is a knob 3 connected to a spring mechanism 4. Rotating the knob 3 loads the spring mechanism 4, which in turn drives the tubular screen 2. The tubular screen 2 rotates slowly during dyer operation so that at least a portion of clear screen is moved into the airflow of the dryer at least periodically during operation of the dryer. The screen 2 is rotatable about a spindle 11.
  • It is beneficial to have a comb or scraper 5 arranged adjacent to the surface of the tubular screen 4 for removing lint from the outer surface of the screen as it passes by the scraper 5. Once the lint is removed from the screen 2 the clean screen section is once again available for rotation into the airflow of the dryer. The lint scraped from the screen surface passes through openings 6 between the frame and the scraper 5 can be collected either in the frame or in a larger receptacle provided beneath the frame.
  • FIG. 2 illustrates the mounting of the lint collector in a clothes dryer 7. The clothes dryer 7 has a door 8 which closes a door opening 9. In the edge of the opening 9 is an opening 10 for an air duct via which air passes out of the interior of the clothes dryer 7. The frame 1 of the inventive lint collector is configured to mount in the opening 10 so that air passing through the interior of the clothes dryer must pass through the tubular screen 2 as it exits into the opening 10 and the subsequent air passage out of the dryer.
  • To operate the illustrated embodiment, one needs to turn the knob 3 to load the screen mechanism 4. This can be done by removing the lint collector from the opening 10 or, if appropriately designed, the knob can be turned while the lint collector is mounted in the opening 10. In either case, once the spring mechanism is loaded the screen begins to rotate. At this point, the door 8 to the clothes dryer 7 is closed and the dryer is turned on so that hot air circulates through the dryer, the tubular screen and the outlet duct. As previously mentioned, the spring loaded mechanism can be replaced with an electric motor tied to the electrical supply of the dryer itself. In this instance, it is preferable to have a switch connected in the electrical circuit of the motor. The switch would be arranged in the door opening 9 so that when the door 8 is closed, the circuit is also closed and the motor would turn the tubular screen 2.
  • Additionally, instead of a hard-wired motor, it is feasible to provide a battery operated motor so that the lint collector could be used to retrofit older dryers that are not wired for powering a motor in the lint collector.
  • In the embodiment shown in FIG. 1, the bottom of the frame forms a chamber which forms a box 12 for collecting lint removed from the screen 2. Alternatively, as shown in FIG. 3, the bottom of the frame 1 can be open so that a separate lint collecting element can be attached to the frame to collect lint removed from the screen.
  • Furthermore, in the embodiment illustrated in FIG. 1, the frame 1 has end plates 13 that are connected together by side walls 14.
  • Although the present invention has been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become apparent to those skilled in the art. It is preferred, therefore, that the present invention be limited but by the specific disclosure herein, but only by the appended claims.

Claims (14)

  1. 1. A lint collector for a dryer in which clothes are dried by heated air supplied to a rotating drum, the lint collector, comprising:
    a frame;
    a tubular screen rotatably mounted in the frame;
    a device for rotating the screen in the frame; and
    an element attached to the frame for removing lint from the screen as the screen rotates.
  2. 2. The lint collector according to claim 1, wherein the device for rotating the screen is a spring-wound mechanism arranged at one end of the screen and having a knob operative to load the spring of the mechanism.
  3. 3. The lint collector according to claim 1, wherein the frame forms a chamber for holding lint removed from the screen.
  4. 4. The lint collector according to claim 1, wherein the device for rotating the screen is an electric motor.
  5. 5. The lint collector according to claim 1, wherein the frame is configured to be removably insertable into a air duct of the dryer in a vicinity of a dryer door.
  6. 6. The lint collector according to claim 1, wherein the screen is rotatable about a horizontal axis.
  7. 7. The lint collector according to claim 1, wherein the frame has two end plates connected together by an elongate base.
  8. 8. The lint collector according to claim 7, wherein the base has two side walls that extend between the end plates.
  9. 9. The lint collector according to claim 8, wherein the side walls are spaced from one another so as to form an opening through which lint removed from the screen can pass.
  10. 10. The lint collector according to claim 8, wherein the lint removing element extends between the two end plates so as to leave an opening between the element and one of the side walls.
  11. 11. The lint collector according to claim 1, wherein the lint removing element is a wiper arranged to separate lint from the screen.
  12. 12. The lint collector according to claim 1, wherein the lint removing element is a comb.
  13. 13. The lint collector according to claim 4, wherein the electric motor is battery operated.
  14. 14. A clothes dryer comprising a cabinet having a drum therein for tumbling a clothing load and a blower for circulating heated air through the clothes to an airflow passage arranged at an edge of a door opening in the cabinet, and a lint collector having a frame, a tubular screen rotatably mounted in the frame, a device for rotating the screen in the frame, and an element attached to the frame for removing lint from the screen as the screen rotates, the lint collector being removably mounted in the airflow passage in an edge region of the door opening.
US12006881 2007-03-26 2008-01-07 Self-cleaning lint collector Abandoned US20080235978A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US91997307 true 2007-03-26 2007-03-26
US12006881 US20080235978A1 (en) 2007-03-26 2008-01-07 Self-cleaning lint collector

Applications Claiming Priority (1)

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US12006881 US20080235978A1 (en) 2007-03-26 2008-01-07 Self-cleaning lint collector

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US20080235978A1 true true US20080235978A1 (en) 2008-10-02

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060218817A1 (en) * 2005-03-31 2006-10-05 Lg Electronics Inc. Laundry drier
US20090071030A1 (en) * 2005-03-31 2009-03-19 Lg Electronics, Inc. Laundry dryer
EP2177661A1 (en) 2010-01-26 2010-04-21 V-Zug AG Household appliance, in particular laundry dryer
US20100146804A1 (en) * 2008-12-17 2010-06-17 Seung Phyo Ahn Dryer and foreign material removing apparatus thereof
DE102008062434A1 (en) * 2008-12-17 2010-07-01 Ip Ag Lint filtering device for fitting into exhaust air flow of laundry dryer, has stripping device that is in contact with drum, so that surface of drum is freed from deposited lint by relative motion of drum and stripping device
EP2226421A1 (en) 2010-01-26 2010-09-08 V-Zug AG Household appliance, in particular laundry dryer
US7886458B2 (en) * 2006-12-22 2011-02-15 G.A. Braun Inc. Lint collection apparatus and system for fabric dryers
US7958651B2 (en) * 2006-05-19 2011-06-14 Maniha Allan M Clothes dryer rake
US20110173834A1 (en) * 2008-07-14 2011-07-21 Electrolux Home Products Corporation, N.V. Laundry Drying Machine with Vibrating Fluff Filter
CN105780428A (en) * 2015-10-21 2016-07-20 李宏江 Blockage-free clothes dryer cloth fluff blocking device
US20170037560A1 (en) * 2014-04-17 2017-02-09 Lg Electronics Inc. Dryer for clothes

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US2594456A (en) * 1948-10-16 1952-04-29 Hoover Co Vacuum cleaner
US2821583A (en) * 1956-04-12 1958-01-28 Leo L Kielman Intervalometer
US2886900A (en) * 1955-04-15 1959-05-19 Murray Corp Drier lint collector
US3959891A (en) * 1974-12-30 1976-06-01 Whirlpool Corporation Removable lint screen assembly for a dryer
US4314409A (en) * 1980-02-06 1982-02-09 Whirlpool Corporation Automatic lint screen cleaner and storage system for dryer
US4462170A (en) * 1982-05-21 1984-07-31 Whirlpool Corporation Sump for lint screen cleaner and storage system for a dryer
US4638573A (en) * 1984-11-09 1987-01-27 Hitachi, Ltd. Lint and raveling collector for clothes dryer
US4653200A (en) * 1986-03-05 1987-03-31 Whirlpool Corporation Lint screen shield assembly for a dryer
US4700492A (en) * 1986-02-05 1987-10-20 Whirlpool Corporation Air actuated automatic lint screen cleaning system for dryer
US4720925A (en) * 1986-12-22 1988-01-26 Whirlpool Corporation Lint filter housing for a dryer
US5463820A (en) * 1992-09-14 1995-11-07 La Rue; Len Lint filter
US5497563A (en) * 1994-05-05 1996-03-12 Charles D. Johnson Dryer apparatus
US5675908A (en) * 1996-10-28 1997-10-14 Barnes; Paul S. Clothes dryer lint receptacle
US5701684A (en) * 1993-09-15 1997-12-30 Fisher & Paykel Limited Lint collector for clothes drier
US5706588A (en) * 1996-08-13 1998-01-13 General Electric Company Device and method for separating lint particles in a clothes dryer
US6662464B2 (en) * 2002-02-15 2003-12-16 Daniel Mark Treu Method and apparatus for cleaning dryer lint screens
US20040143994A1 (en) * 2002-04-22 2004-07-29 The Proctor & Gamble Company Fabric article treating apparatus with safety device and controller
US6971186B1 (en) * 2004-02-11 2005-12-06 Chin Tj Lint filter assembly for use in a dryer
US20060201014A1 (en) * 2005-03-14 2006-09-14 Electrolux Home Products Corporation N.V. Household clothes drying machine with improved lint filter
US20070107251A1 (en) * 2005-11-16 2007-05-17 Bsh Bosch Und Siemens Hausgerate Gmbh Device for drying laundry by means of a current of air

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594456A (en) * 1948-10-16 1952-04-29 Hoover Co Vacuum cleaner
US2886900A (en) * 1955-04-15 1959-05-19 Murray Corp Drier lint collector
US2821583A (en) * 1956-04-12 1958-01-28 Leo L Kielman Intervalometer
US3959891A (en) * 1974-12-30 1976-06-01 Whirlpool Corporation Removable lint screen assembly for a dryer
US4314409A (en) * 1980-02-06 1982-02-09 Whirlpool Corporation Automatic lint screen cleaner and storage system for dryer
US4462170A (en) * 1982-05-21 1984-07-31 Whirlpool Corporation Sump for lint screen cleaner and storage system for a dryer
US4638573A (en) * 1984-11-09 1987-01-27 Hitachi, Ltd. Lint and raveling collector for clothes dryer
US4700492A (en) * 1986-02-05 1987-10-20 Whirlpool Corporation Air actuated automatic lint screen cleaning system for dryer
US4653200A (en) * 1986-03-05 1987-03-31 Whirlpool Corporation Lint screen shield assembly for a dryer
US4720925A (en) * 1986-12-22 1988-01-26 Whirlpool Corporation Lint filter housing for a dryer
US5463820A (en) * 1992-09-14 1995-11-07 La Rue; Len Lint filter
US5701684A (en) * 1993-09-15 1997-12-30 Fisher & Paykel Limited Lint collector for clothes drier
US5497563A (en) * 1994-05-05 1996-03-12 Charles D. Johnson Dryer apparatus
US5706588A (en) * 1996-08-13 1998-01-13 General Electric Company Device and method for separating lint particles in a clothes dryer
US5675908A (en) * 1996-10-28 1997-10-14 Barnes; Paul S. Clothes dryer lint receptacle
US6662464B2 (en) * 2002-02-15 2003-12-16 Daniel Mark Treu Method and apparatus for cleaning dryer lint screens
US20040143994A1 (en) * 2002-04-22 2004-07-29 The Proctor & Gamble Company Fabric article treating apparatus with safety device and controller
US6971186B1 (en) * 2004-02-11 2005-12-06 Chin Tj Lint filter assembly for use in a dryer
US20060201014A1 (en) * 2005-03-14 2006-09-14 Electrolux Home Products Corporation N.V. Household clothes drying machine with improved lint filter
US20070107251A1 (en) * 2005-11-16 2007-05-17 Bsh Bosch Und Siemens Hausgerate Gmbh Device for drying laundry by means of a current of air

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060218817A1 (en) * 2005-03-31 2006-10-05 Lg Electronics Inc. Laundry drier
US20090071030A1 (en) * 2005-03-31 2009-03-19 Lg Electronics, Inc. Laundry dryer
US7694434B2 (en) * 2005-03-31 2010-04-13 Lg Electronics Inc. Laundry drier
US8104192B2 (en) * 2005-03-31 2012-01-31 Lg Electronics Inc. Laundry dryer
US7958651B2 (en) * 2006-05-19 2011-06-14 Maniha Allan M Clothes dryer rake
US7886458B2 (en) * 2006-12-22 2011-02-15 G.A. Braun Inc. Lint collection apparatus and system for fabric dryers
US8919006B2 (en) * 2008-07-14 2014-12-30 Electrolux Home Products Corporation N.V. Laundry drying machine with vibrating fluff filter
US20110173834A1 (en) * 2008-07-14 2011-07-21 Electrolux Home Products Corporation, N.V. Laundry Drying Machine with Vibrating Fluff Filter
US9217220B2 (en) * 2008-12-17 2015-12-22 Lg Electronics Inc. Dryer and foreign material removing apparatus thereof
US20100146804A1 (en) * 2008-12-17 2010-06-17 Seung Phyo Ahn Dryer and foreign material removing apparatus thereof
DE102008062434A1 (en) * 2008-12-17 2010-07-01 Ip Ag Lint filtering device for fitting into exhaust air flow of laundry dryer, has stripping device that is in contact with drum, so that surface of drum is freed from deposited lint by relative motion of drum and stripping device
EP2177661A1 (en) 2010-01-26 2010-04-21 V-Zug AG Household appliance, in particular laundry dryer
EP2226421A1 (en) 2010-01-26 2010-09-08 V-Zug AG Household appliance, in particular laundry dryer
US20170037560A1 (en) * 2014-04-17 2017-02-09 Lg Electronics Inc. Dryer for clothes
US9896797B2 (en) * 2014-04-17 2018-02-20 Lg Electronics Inc. Dryer for clothes
CN105780428A (en) * 2015-10-21 2016-07-20 李宏江 Blockage-free clothes dryer cloth fluff blocking device

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