US2570307A - Suction cleaner with pneumatic filter cleaning means - Google Patents

Suction cleaner with pneumatic filter cleaning means Download PDF

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Publication number
US2570307A
US2570307A US761530A US76153047A US2570307A US 2570307 A US2570307 A US 2570307A US 761530 A US761530 A US 761530A US 76153047 A US76153047 A US 76153047A US 2570307 A US2570307 A US 2570307A
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US
United States
Prior art keywords
filter
handle
nozzle
fan
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US761530A
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English (en)
Inventor
Bell William Charlton
Press Raymond Herbert Harold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoover Co
Original Assignee
Hoover Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoover Co filed Critical Hoover Co
Application granted granted Critical
Publication of US2570307A publication Critical patent/US2570307A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/20—Means for cleaning filters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/30—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A47L9/1666—Construction of outlets with filtering means

Definitions

  • This invention relates to suction cleaners of the handle-propelled type comprising a casing containing a motor-driven fan and affording a main nozzle adapted to be maneuvered by means of a pivoted handle over the carpet or other surface to be cleaned for on-the-floor" cleaning.
  • An agitator preferably positively driven, is usually mounted within the main nozzle.
  • a suction cleaner of the handle-propelled type includes a preliminary separator or whirl chamber, a final filter chamber, a filter cleaning nozzle, movable relatively to the final filter surface for cleaning it, and conduits leading from the fan outlet to the final filter chamber, and from the filter-cleaning nozzle back to the preliminary separator or fan intake.
  • the handle structure may be hollow and include outlet openings covered by air-permeable fabric or the like, while the filter cleaning nozzle is arranged within the handle and provided with means for applying suction to it and means for moving it relatively to the inner surface of the filter material to remove the agglomerated dirt therefrom.
  • the filter cleaning nozzle comprises a longitudinally extending mouth and projects from a tubular member mounted centrally within the handle and capable of rotation to traverse the mouth over the inner surface of the final filter.
  • the filter-cleaning nozzle may thus comprise a tube of generally star-shaped cross section, for example having three projections equally spaced round the axis. one of the projections being slotted to provide a mouth and formed with rounded lips to ride over the surface of the filter material.
  • the suction cleaner may have means for applying suction to the filter-cleaning nozzle, and moving it relatively to the filter, while the main nozzle is in operation.
  • the movement of the filter cleaning nozzle may be produced by the rocking movement of the handle as the suction cleaner is moved to and fro in use.
  • the filter-cleaning nozzle may be arranged to be rotated step by step, as through ratchet mechanism, by the movements of the handle.
  • means may be provided for wholly or partially closing the main nozzle and applying suction to the filter cleaning nozzle when the filter is to be cleaned.
  • a portion of the handle assembly for example the handle grip, may be adapted to be moved relatively to the main portion of the handle so as to traverse the filter-cleaning nozzle over the surface of the filter.
  • Figure 1 is a sectional side elevation showing the invention applied to a suction cleaner in which the fan has a vertical axis;
  • Figure 2 is a sectional plan view of the cleaner shown in Figure 1;
  • Figure 3 is a sectional plan on the line of 3-3 of Figure 1;
  • Figure 4 is a detail view showing the perforated handle tube
  • Figure 5 is an enlarged diagram of the mechanism for rotating the filter-cleaning nozzle
  • Figure 6 is a diagrammatic plan view showing the invention applied to a cleaner in which the fan has a horizontal transverse axis;
  • Figure 7 is a diagrammatic side elevation of the cleaner shown in Figure 6, and
  • Figure 8' is an enlarged detail diagram showing the mechanism for rotating the filter-cleaning nozzle in the arrangement of Figures 6 and 7.
  • the cleaner comprises a casing 10 mounted upon wheels I I and provided with a vertical axis motor driven fan l2.
  • the cleaner has a main nozzle l3 within which an agitator H is rotatably driven by a belt ll looping a pulley It at the lower end of the motor shaft.
  • the lighter dust particles which are not thrown down into the dirt receptacle, pass up- 19 permeable fabric, or like filtering material, 32
  • the interior of the handle communicates with the pressure side of the fan i2 through a 35 delivery passage 33 and pivotal Joint 33 which allows the handle to pivot up and down without breaking the communication between the delivery passage 33 and the interior of the handle.
  • the hollow handle contains a filter-cleaning go nozzle comprising a tube of generally triangular or three pointed starshaped cross section as. shown in Figure 3. Two of the points of the star merely rest on the inner surface of the handle in order to guide and locate the filter-cleaning nozg5 zle, whilst the third is formed as a slot ll with lips rounded as shown at 42 so as to ride smoothly over the surface of the fabric and constitute a nozzle mouth for cleaning it.
  • the filter-clean- 4o ing nozzle tube 40 is rotatable about a fixed tube 43 through which it communicates with a point on the suction side of the fan. For example it may communicate through an arcuate port 44 with a compartment 45 (Fig. 2) in the swivel joint 45 34 and thence through a passage way 45 with a port 41 (see in Figure 1) of the whirl chamber 20.
  • the interior of the filter-cleaning nozzle is continuously in communication with the suction side of the fan and hence the area of the filter fabric between its lips is subjected to suction on its inside and atmospheric pressure on its outside, while the remaining fabric is subjected to atmospheric pressure on its outside and the delivery pressure of the fan on its inside.
  • fine dust which fails to be trapped by the whirl chamber or preliminary separator 20 becomes agglomerated on the filter fabric 32 and hence when drawn back again into the whirl chamber 20 through the filter-cleaning nozzle 40 will be no deposited in the whirl chamber.
  • the filter-cleaning nozzle is rotated relatively to the handle. This may be effected manually, for example by securing the outer end of the Q5 filter cleaning nozzle to the end grip ll of the handle which may be made rotatable relatively to the outer tube 30 of the handle.
  • FIG. 5 One form of mechanism for achieving this is shown diagrammatically in Figure 5.
  • a shaft 50 extends transversely through the fixed part of the handle tube and the fixed part of the filter-cleaning nomle tube 43.
  • the rotating filtercleaning male 40 is formed at its inner end with a ratchet 5
  • An arm 54 is rigid with one end of shaft ill and is connected by a link 55 to a pivot on a fixed part of the casing.
  • the mechanism is so chosen that as the handle is oscillated up and down relatively to the casing the shaft 50 will be rocked to and fro and the pawl 52 on the arm 53 will advance the ratchet 5i and hence rotate the filter-cleaning nozzle with a step by step rotation.
  • a second arm and pawl may, if desired, be provided on the 1
  • FIGS. 6-8 show a similar arrangement of filter-cleaning nozzle 66 as applied to a suction cleaner having a transverse horizontal fan and motor axis.
  • the whole suction-creating unit including the motor and fan ii is arranged to turn with the handle relatively to the frame or chassis on which the casing of the cleaner is mounted.
  • the suction unit may turn relatively to the whirl chamber, the lower end of which is provided with a dirt receptacle having a detachable base.
  • the fan ii is carried on the motor shaft adjacent to the whirl chamber whilst the belt for driving the agitator is conveniently driven by a pulley at the opposite end of the motor shaft from the fan and is housed in a passage remote from the conduit by which air is drawn into the whirl chamber by the main nozzle.
  • th arrangement is generally analogous to that shown in Figures 1-5 except that the pivotal joint 34 provided in Figures 1-5 is not necessary in the construction of Figures 6-8.
  • separate passages 62 and .3 connect the interior of the handle with the pressure side of the fan ii and the interior of the filter-cleaning nozzle 84 with the whirl chamher.
  • a ratchet wheel II is secured to the lower nd of the scavenger nozzle 64.
  • a pawl 'il carried by an arm I! rigidly attached to a shaft 13.
  • an arm 14 to which is pivoted one end of a link 15 the other end of which is secured to a fixed part of the cleaner such as a part of the main nozzle 66.
  • the movement of the filter-cleaning nozzle may be produced manually and may be performed only intermittently at times when the main nozzle is not in operation.
  • means may be provided for wholly or partially closing the main nozzle when the filter-cleaning nozzle is put into use. This is particularly conveniently effected in an arrangement such as that of Figures 6 and 7 in which the belt is arranged in a separate passage. Means may be provided to prevent the rotation of the nozzle unless and until the necessary adjustments have been made to ensure that the air circuit is arranged for air to fiow in the right direction.
  • the form of the filter-cleaning nozzle may vary.
  • the preliminary separator may com- I prise a rotary member of known type by which the dirt particles are mechanically separated before the dust-laden air is discharged to the final filter.
  • a suction cleaner comprising, an ambulatory body, a nozzle carried by said body, a hollow handle for propelling said body over a surface to be cleaned, a motor driven fan, a passageway communicating between the suction side of said fan and said nozzle, said passageway including a preliminary dirt separator, a final dirt filter positioned within said handle and interiorly connected to the pressure side of said fan, a scavenger nozzle movably positioned against the inner surface of said final filter and interiorly connected to the suction side of said fan, a pivotal joint for pivotally connecting said handle to said body and means actuated by pivotal movement oi? said handle relative to 'said body for moving said scavenger nozzle over the interior surface of said final filter.
  • a suction cleaner comprising; an ambulatory body including a suction nozzle; a handle pivotally articulated to said body; a preliminary dirt separator associated with said body; a final dirt filter in said handle; a scavenger nozzle positioned to contact the inner surface of said filter; a motor-driven fan; conduits connecting said suction nozzle, preliminary dirt separator, fan,
  • a suction cleaner according to claim 2 in which said handle includes a cylindrical casing, said filter comprising a cylindrical filter bag within said casing, said scavenger nozzle is rotatable on the interior of said filter bag and said moving means comprising a ratchet and pawl mechanism operated by the normal pivotal movement of said handle.
  • a suction cleaner comprising, an ambulatory body, a suction nozzle associated with said body, a handle pivoted to said body for moving said nozzle about over a surface to be cleaned, a filter carried by said handle, a scavenger nozzle movable over the surface of said filter, a fan, conduit means for connecting each of said nozzles to the suction side of said fan, a pivotal linkage mechanism connected between said handle and body and means actuated by said linkage mechanism upon pivotal movement of said handle relative to said body for moving said scavenger nozzle over the surface of said filter.
  • a suction cleaner according to claim 5 in which said handle comprises a foraminous hollow casing, said filter comprises a slotted tube in contact with the interior surface of said bag and said linkage actuated means comprising a ratchet and pawl mechanism for rotating said scavenger nozzle over the interior surface of said filter bag.
  • a suction cleaner according to claim 5 in which said linkage actuating mechanism comprises ratchet and pawl mechanism for moving said scavenger nozzle over the surface of said filter in a step by step movement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US761530A 1946-07-12 1947-07-17 Suction cleaner with pneumatic filter cleaning means Expired - Lifetime US2570307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20897/46A GB614297A (en) 1946-07-12 1946-07-12 Improvements in or relating to suction cleaners

Publications (1)

Publication Number Publication Date
US2570307A true US2570307A (en) 1951-10-09

Family

ID=10153621

Family Applications (1)

Application Number Title Priority Date Filing Date
US761530A Expired - Lifetime US2570307A (en) 1946-07-12 1947-07-17 Suction cleaner with pneumatic filter cleaning means

Country Status (5)

Country Link
US (1) US2570307A (xx)
BE (1) BE479028A (xx)
FR (1) FR957814A (xx)
GB (1) GB614297A (xx)
NL (1) NL70175C (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6625845B2 (en) * 2000-03-24 2003-09-30 Sharp Kabushiki Kaisha Cyclonic vacuum cleaner
US20080189899A1 (en) * 2007-02-09 2008-08-14 Beers David R Vacuum electronic power tool sense
US20090094775A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum Electronic Switch Detection System
US20090094778A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum Electronic Water Sense Circuit
US20090094777A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum electronics isolation method
US8327487B2 (en) 2008-01-31 2012-12-11 Black & Decker Inc. Vacuum filter cleaning device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929025A (en) * 1930-08-02 1933-10-03 Quadrex Corp Bagless vacuum cleaner
US1954416A (en) * 1930-10-15 1934-04-10 Quadrex Corp Bagless vacuum cleaner
US2002636A (en) * 1930-09-12 1935-05-28 Quadrex Corp Vacuum-broom
US2184732A (en) * 1936-06-11 1939-12-26 Bendix Prod Corp Vacuum cleaner
US2287921A (en) * 1939-11-18 1942-06-30 Hoover Co Suction cleaner
US2287924A (en) * 1940-12-21 1942-06-30 Hoover Co Suction cleaner
USRE22336E (en) * 1940-04-05 1943-06-22 Vacuum cleaner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929025A (en) * 1930-08-02 1933-10-03 Quadrex Corp Bagless vacuum cleaner
US2002636A (en) * 1930-09-12 1935-05-28 Quadrex Corp Vacuum-broom
US1954416A (en) * 1930-10-15 1934-04-10 Quadrex Corp Bagless vacuum cleaner
US2184732A (en) * 1936-06-11 1939-12-26 Bendix Prod Corp Vacuum cleaner
US2287921A (en) * 1939-11-18 1942-06-30 Hoover Co Suction cleaner
USRE22336E (en) * 1940-04-05 1943-06-22 Vacuum cleaner
US2287924A (en) * 1940-12-21 1942-06-30 Hoover Co Suction cleaner

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6625845B2 (en) * 2000-03-24 2003-09-30 Sharp Kabushiki Kaisha Cyclonic vacuum cleaner
US8015657B2 (en) 2007-02-09 2011-09-13 Black & Decker Inc. Vacuum electronic power tool sense
US20110016656A1 (en) * 2007-02-09 2011-01-27 Black & Decker Inc. Vacuum Electronic Power Tool Sense
US20080189899A1 (en) * 2007-02-09 2008-08-14 Beers David R Vacuum electronic power tool sense
US8584310B2 (en) 2007-02-09 2013-11-19 Black & Decker Inc. Vacuum electronic power tool sense
US20090094775A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum Electronic Switch Detection System
US20090094778A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum Electronic Water Sense Circuit
US20090094777A1 (en) * 2007-10-11 2009-04-16 Beers David R Vacuum electronics isolation method
US7644469B2 (en) 2007-10-11 2010-01-12 Black & Decker Inc. Vacuum electronics isolation method
US20110016655A1 (en) * 2007-10-11 2011-01-27 Black & Decker Inc. Vacuum Electronic Switch Detection System
US7962994B2 (en) 2007-10-11 2011-06-21 Black & Decker Inc. Vacuum electronic switch detection system
US8266761B2 (en) 2007-10-11 2012-09-18 Black & Decker Inc. Vacuum electronic switch detection system
US8516650B2 (en) 2007-10-11 2013-08-27 Black & Decker Inc. Vacuum electronic water sense circuit
US8327487B2 (en) 2008-01-31 2012-12-11 Black & Decker Inc. Vacuum filter cleaning device

Also Published As

Publication number Publication date
GB614297A (en) 1948-12-13
NL70175C (xx)
FR957814A (xx) 1950-02-25
BE479028A (xx)

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