US20140366309A1 - Configuration of a surface cleaning apparatus - Google Patents
Configuration of a surface cleaning apparatus Download PDFInfo
- Publication number
- US20140366309A1 US20140366309A1 US14/470,342 US201414470342A US2014366309A1 US 20140366309 A1 US20140366309 A1 US 20140366309A1 US 201414470342 A US201414470342 A US 201414470342A US 2014366309 A1 US2014366309 A1 US 2014366309A1
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- US
- United States
- Prior art keywords
- surface cleaning
- cyclone
- cleaning unit
- unit
- air flow
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- 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.)
- Abandoned
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Classifications
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- 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
- A47L5/225—Convertible suction cleaners, i.e. convertible between different types thereof, e.g. from upright suction cleaners to sledge-type suction cleaners
-
- 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
- A47L5/24—Hand-supported suction cleaners
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- 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
- A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
-
- 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
- A47L9/1616—Multiple arrangement thereof
- A47L9/1625—Multiple arrangement thereof for series flow
-
- 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
- A47L9/1616—Multiple arrangement thereof
- A47L9/1641—Multiple arrangement thereof for parallel flow
-
- 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
-
- 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
- A47L9/1683—Dust collecting chambers; Dust collecting receptacles
-
- 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
- A47L9/32—Handles
- A47L9/327—Handles for suction cleaners with hose between nozzle and casing
Definitions
- the specification relates to surface cleaning apparatus such as vacuum cleaners.
- the specification relates to cyclonic hand vacuum cleaners.
- PCT publication WO 2008/009890 discloses a handheld cleaning appliance comprising a main body, a dirty air inlet, a clean air outlet and a cyclonic separator for separating dirt and dust from an airflow.
- the cyclone separator is located in an airflow path leading from the air inlet to the air outlet.
- the cyclonic separator is arranged in a generally upright orientation (i.e., the air rotates about a generally vertical axis in use).
- a base surface of the main body and a base surface of the cyclonic separator together form a base surface of the appliance for supporting the appliance on a surface. See also PCT publication WO 2008/009888 (Dyson Technology Limited) and PCT publication WO 2008/009883 (Dyson Technology Limited).
- U.S. Pat. No. 7,370,387 discloses a hand-holdable vacuum cleaner that uses one or more filters and/or cyclonic separation device, and means for adjusting an angle of air inlet relative to a main axis of said vacuum cleaner.
- the vacuum cleaner further comprises a rigid, elongate nose having the air inlet at one end thereof, the nose being pivotal relative to a main axis of the vacuum cleaner through an angle of at least 135 degrees.
- a surface cleaning apparatus and, preferably a cyclonic hand vacuum cleaner and/or a surface cleaning unit that is removably mounted to an upright support structure that is pivotally mounted to a cleaning head wherein at least part, and preferably a substantial portion, of the air flow path between components of the surface cleaning apparatus is linear.
- one or more components of the vacuum cleaner may be arranged such that the air outlet of an upstream component faces the air inlet of a downstream component.
- the outlet from a cyclone is oriented such that the air may travel generally linearly to the inlet of a suction motor.
- the outlet of the last pre-motor cyclone or cyclones is preferably oriented such that the air may travel generally linearly to the inlet of a suction motor.
- one or more pre-motor filters may be positioned between the cyclone outlet and the suction motor inlet.
- the air flow through the pre-motor filter or filters is generally linear.
- the air outlet of other components may also be oriented such that the air may travel generally linearly to the inlet of the next downstream component (e.g., a cyclone, filter or suction motor).
- An advantage of this design is that the backpressure in the airflow path through the hand vacuum cleaner may be reduced. Accordingly, the airflow rate through the hand vacuum cleaner may be increased without increasing the size (and weight) of the suction motor. Alternately, or in addition, a smaller motor may be used with decreasing the airflow rate through the hand vacuum cleaner.
- the hand vacuum cleaner may comprise a front end, a rear end and air flow passage extending from a dirty air inlet to a clean air outlet.
- a first cyclone unit is positioned in the air flow passage.
- the first cyclone unit may comprise at least one cyclone comprising a cyclone inlet and a cyclone outlet, and at least one dirt collection chamber.
- a suction motor is positioned in the air flow passage preferably downstream from the first cyclone unit.
- the air flow passage may include a generally linear air flow path from the cyclone outlet to the suction motor.
- the vacuum cleaner further comprises a pre-motor filter, wherein the first cyclone unit, the pre-motor filter and the suction motor are arranged linearly. Accordingly, the inlets and the outlets may face each other so that the air travels generally in a straight line between the components. It will be appreciated that the components may be arranged along a straight line.
- the at least one cyclone has a cyclone axis extending longitudinally through the at least one cyclone
- the hand vacuum cleaner has an axis extending from the front end to the rear end
- the cyclone axis is generally parallel to the axis of the hand vacuum cleaner.
- the cyclone axis may be parallel to an axis extending through the suction motor (e.g., co axial or parallel to the shaft on which a suction fan rotates.
- the at least one cyclone has a cyclone axis extending longitudinally through the at least one cyclone
- the suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan and the cyclone axis is generally parallel to the motor axis.
- the suction motor is positioned rearward of the first cyclone unit.
- the first cyclone unit is positioned at the front end of the hand vacuum cleaner.
- the dirt collection chamber has an openable door provided at a front end of the first cyclone unit.
- the at least one cyclone has a cyclone front end, and a cyclone rear end, and the cyclone air inlet and the cyclone air outlet are at the same end of the at least one cyclone.
- the cyclone air inlet and the cyclone air outlet are at the cyclone rear end.
- the cyclone may have a dirt outlet and the dirt out is preferably positioned at an end opposed to the end having the cyclone air inlet.
- the cyclone dirt outlet is at the cyclone front end.
- the cyclone front end is proximate the front end of the hand vacuum cleaner, the cyclone front end has a dirt outlet, and a separation plate is mounted in facing relation to the dirt outlet.
- the dirt collection chamber has an openable door provided at the cyclone front end and the separation plate is mounted to the door.
- the door may alternately or in addition be removable.
- the at least one dirt collection chamber is openable when mounted to the hand vacuum cleaner.
- the vacuum cleaner further comprises a suction motor housing.
- the suction motor is positioned in the suction motor housing and the first cyclone unit is removably mounted to the suction motor housing.
- the vacuum cleaner further comprises a pre-motor filter positioned facing the cyclone air outlet and having a pre-motor filter air inlet and a pre-motor filter air outlet.
- the suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan and the pre-motor filter air inlet and the pre-motor air outlet each define a plane that is generally transverse to the motor axis.
- the vacuum cleaner further comprises a post motor filter having a post motor filter air inlet and a post motor filter air outlet
- the suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan
- the post motor filter air inlet and the post motor air outlet are generally transverse to the motor axis.
- the vacuum cleaner further comprises a pre-motor filter having a pre-motor filter air inlet and a pre-motor filter air outlet and a post motor filter having a post motor filter air inlet and a post motor filter air outlet, and some, and preferably all, of the pre-motor filter air inlet, the pre-motor air outlet, the post motor filter air inlet and the post motor air outlet are aligned.
- the vacuum cleaner further comprises a post motor filter positioned downstream from the suction motor and comprising an air outlet at the rear end of the hand vacuum cleaner.
- the vacuum cleaner further comprises the first cyclone unit comprises a single cyclone and a single dirt collection chamber.
- the vacuum cleaner further comprises a second cyclone unit downstream from the first cyclone unit.
- the second cyclone unit may have a second cyclone air inlet having a direction of flow and a second cyclone air outlet having a direction of flow and the direction of flow through the second cyclone air inlet and/or the second cyclone air outlet may be in the same direction as the direction of air flow through the cyclone outlet.
- a surface cleaning apparatus comprises an air flow passage extending from a dirty air inlet to a clean air outlet.
- the surface cleaning apparatus further comprises a floor cleaning unit comprising a surface cleaning head and a handle drivingly connected thereto.
- a surface cleaning unit is removably mounted to the floor cleaning unit.
- the surface cleaning unit comprises a first cyclone unit positioned in the air flow passage.
- the first cyclone unit comprises at least one cyclone comprising a cyclone inlet and a cyclone outlet and at least one dirt collection chamber.
- a suction motor is positioned in the air flow passage downstream from the first cyclone unit.
- the air flow passage includes a generally linear air flow path from the cyclone outlet to the suction motor.
- the surface cleaning unit is operable when removed from the floor cleaning unit.
- the air flow passage comprises a portion extending from the surface cleaning head to the surface cleaning unit and the portion comprises a flexible conduit.
- the first cyclone unit is positioned above the suction motor when the surface cleaning unit is mounted to the floor cleaning unit.
- the first cyclone unit has a portion that is openable or removable and the portion is located at an upper end of the first cyclone unit.
- the surface cleaning unit is removably mounted to the handle.
- an upright surface cleaning apparatus comprising an air flow passage extending from a dirty air inlet to a clean air outlet.
- a floor cleaning unit is provided which comprises a surface cleaning head and a handle drivingly connected thereto.
- a first cyclone unit is supported by the handle and is in the air flow passage.
- the first cyclone unit comprises at least one cyclone comprising a cyclone inlet and a cyclone outlet and at least one dirt collection chamber.
- a suction motor is supported by the handle below the first cyclone unit.
- the cyclone unit is mounted to the handle.
- the air flow passage includes a generally linear air flow path from the cyclone outlet to the suction motor.
- vacuum cleaner may incorporate one or more of the features of each of these examples.
- FIG. 1 is a side plan view of an example of a surface cleaning unit
- FIG. 2 is a top plan view of the surface cleaning unit of FIG. 1 ;
- FIG. 3 is a front plan view of the surface cleaning unit of FIG. 1 ;
- FIG. 4 is a partially exploded rear perspective view of the surface cleaning unit of FIG. 1 ;
- FIG. 5 is a partially exploded front perspective view of the surface cleaning unit of FIG. 1 ;
- FIG. 6 is a cross section taken along line 6 - 6 in FIG. 2 ;
- FIG. 7 is a bottom perspective view of the surface cleaning unit of FIG. 1 ;
- FIG. 8 is a cross section showing an alternate example of a surface cleaning unit
- FIG. 9 is a perspective illustration of the surface cleaning unit of FIG. 1 mounted in a surface cleaning apparatus.
- FIG. 10 is a perspective illustration of the surface cleaning unit of FIG. 1 in airflow communication with the surface cleaning apparatus of FIG. 9 .
- the hand vacuum cleaner is exemplified as comprising one or two cyclonic stages. It will be appreciated that the vacuum cleaner 100 may be of various configurations (e.g., different positioning of the cyclonic stages and the suction motor and differing cyclonic stages that may comprise one or more cyclones and one or more filters).
- the surface cleaning unit 100 (also referred to herein as vacuum cleaner 100 or cleaner 100 ) is usable as a vacuum cleaner 100 , and more particularly a hand vacuum cleaner 100 .
- the vacuum cleaner 100 is movable along a surface to be cleaned by gripping and maneuvering handle 102 .
- the vacuum cleaner includes an upper portion 104 , a lower portion 106 , a front end 108 , and a rear end 110 .
- a longitudinal axis 125 of the vacuum cleaner 100 extends between the front end 108 and the rear end 110 .
- handle 102 is provided at the upper portion 104 . In alternate examples, handle 102 may be provided elsewhere on the vacuum cleaner 100 , for example at the rear 110 and may be of any design.
- the vacuum cleaner 100 comprises a nozzle 112 and a cyclone unit 114 , which together preferably form a surface cleaning head 116 of the vacuum cleaner 100 .
- the surface cleaning head 116 is preferably provided at the front end 108 of the vacuum cleaner 100 .
- Nozzle 112 engages a surface to be cleaned, and comprises a dirty air inlet 118 , through which dirty air is drawn into the vacuum cleaner 100 .
- An airflow passage extends from the dirty air inlet 118 to a clean air outlet 120 of the cleaner 100 .
- clean air outlet 120 is at the rear 110 of the cleaner 100 .
- Cyclone unit 114 is provided in the airflow passage, downstream of the dirty air inlet 118 .
- Cyclone unit 116 has a front end 190 , and a rear end 192 .
- the cyclone unit 114 is a one piece assembly comprising one cyclone 122 , and one dirt collection chamber 124 , which are integrally formed.
- the cyclone unit 110 may include more than one cyclonic stage, wherein each cyclonic stage comprises one or more cyclones and one or more dirt chambers. Accordingly, the cyclones may be arranged in parallel and/or in sequence. Further, in alternate examples, the cyclone 122 and dirt collection chamber 124 may be separately formed.
- the nozzle 112 is positioned at the lower portion 106 of the vacuum cleaner 100 .
- nozzle 112 is positioned at the bottom of the vacuum cleaner 100 , and, preferably, beneath the cyclone unit 114 .
- nozzle 112 may be connected to the cyclone unit or dirt collection chamber at alternate locations.
- nozzle 112 may be on lower surface 157 of cyclone unit 114 and may share a wall with the cyclone unit 114 .
- the upper wall 126 of the nozzle 112 may be a lower wall of the cyclone unit 114 .
- dirt chamber 124 surrounds the lower portion of cyclone 122 .
- the upper wall of nozzle 112 may be part of the lower wall of the dirt chamber. It will be appreciated that if dirt chamber 124 does not extend around the lower portion of cyclone 122 , then the upper wall of nozzle 112 may be part of a lower wall of cyclone 122 .
- the nozzle 112 is fixedly positioned at the lower portion 106 of the vacuum cleaner 100 . That is, the nozzle 112 is not movable (e.g., rotatable) with respect to the remainder of the vacuum cleaner 100 , and is fixed at the lower portion 106 of the vacuum cleaner 100 .
- nozzle 112 has a width W N
- cyclone unit 114 has a width W C .
- W N , and W C are about the same.
- An advantage of this design is that the nozzle 112 may have a cleaning path that is essentially as wide as the hand vacuum itself.
- nozzle 112 comprises an airflow chamber 136 wherein at least a portion, and preferably a majority, of the lower surface 134 of the chamber is open.
- nozzle 812 comprises a lower wall 837 , which closes lower end 834 .
- nozzle 112 may be of various designs and may be an open sided passage or a closed passage. In either embodiment, it will be appreciated that nozzle 112 may be mounted or provided on cyclone unit 114 and as exemplified on a lower portion of the dirt collection chamber so as to be removable with the dirt collection chamber
- FIG. 7A An open sided design is exemplified in FIG. 7A wherein nozzle 112 comprises an upper nozzle wall 126 .
- the upper nozzle wall 126 comprises a portion 119 of a wall 115 of the cyclone unit.
- one or more depending walls 128 extend downwardly from the upper nozzle wall 126 .
- the depending wall is preferably generally U-shaped.
- a depending wall 128 is provided rearward of opening 138 .
- depending walls may alternately or in addition be provided on the lateral sides of opening 138 .
- the depending walls may be continuous to define a single wall as shown, or may be discontinuous.
- the depending walls may be provided on each lateral side of opening 138 and rearward thereof.
- depending walls 128 may extend a substantial distance to the front end 108 and, preferably, essentially all the way to front end 108 .
- the depending wall 128 may be continuous to define a single wall as shown, or may be discontinuous.
- the depending wall is preferably rigid (e.g., integrally molded with cyclone unit 114 ). However, they may be flexible (e.g., bristles or rubber) or moveably mounted to cyclone unit 114 (e.g., hingedly mounted).
- the lower end 132 of depending wall 128 is spaced above the surface being cleaned when the hand vacuum cleaner is placed on a surface to be cleaned.
- lower end 132 of depending wall 128 is spaced a distance H above the floor.
- distance H is from 0.01 inches to 0.175 inches, more preferably from 0.04 to 0.08 inches.
- the height of the depending wall 128 may vary.
- the depending wall may have a height of between about 0.05 and about 0.875 inches, preferably between about 0.125 and about 0.6 inches and more preferably between about 0.2 and about 0.4 inches.
- the height of depending wall 128 may vary but is preferably constant.
- the open end of the U-shape defines an open side 130 of the nozzle 114 , and forms the dirty air inlet 118 of the cleaner 100 .
- the open side 130 is provided at the front of the nozzle 114 .
- the open side 130 sits above and is adjacent a surface to be cleaned (e.g. floor F).
- a surface to be cleaned e.g. floor F.
- lower end 132 of depending walls 128 is spaced above floor F. Accordingly, some air may enter nozzle 114 by passing underneath depending wall 132 . In such a case, the primary air entry to nozzle 114 is via open side 130 so that dirty air inlet 118 is the primary air inlet, with a secondary air inlet being under depending wall 128 .
- the lower end 132 of the depending wall 128 defines an open lower end 134 of the nozzle 114 .
- the open lower end 134 preferably extends to the front 108 of the cleaner 100 , and merges with the open side 130 .
- the exemplified nozzle 112 has an open lower end 134 that faces a surface to be cleaned.
- a plurality of wheels 135 are mounted to the depending wall 128 , and extend lower than the lower end 132 of the depending wall 128 . Accordingly, in use, when wheels 135 are in contact with a surface, the lower end 132 of the depending wall 128 is spaced from the surface to be cleaned, and the space between the lower end of the depending wall 128 and the surface to be cleaned form the secondary dirty air inlet to the vacuum cleaner 100 .
- wheels 135 are optional.
- wheels 135 are positioned exterior to the airflow path through nozzle 112 , e.g., laterally outwardly from depending wall 128 .
- a pair of front wheels 135 are provided.
- the wheels are located adjacent front 108 .
- one or more rear wheels 180 may be provided. In an alternate embodiment, no wheels may be provided.
- the upper nozzle wall 126 , depending wall 128 , and open lower end 134 of the nozzle 112 define open sided airflow chamber 136 of the nozzle.
- the nozzle 112 and the airflow chamber 136 preferably extend generally horizontally, and preferably linearly along a nozzle axis 113 (see FIG. 7 ).
- Opening 138 maybe provided in the upper nozzle wall 126 , and is in communication with the airflow chamber 136 .
- Opening 138 may be of any size and configuration and at various locations in upper nozzle wall 126 .
- the opening 138 faces a surface to be cleaned, air enters the dirty air inlet 118 , passes horizontally through the airflow chamber 136 , and passes into the opening 138 .
- Opening 138 is in communication with a cyclone inlet passage 139 , which is in communication with a cyclone inlet 140 of cyclone 122 .
- a single cyclone is used.
- the direction of air exiting the outlet of cyclone 122 is the same as the direction of airflow immediately upstream of the suction motor 164 .
- an optional pre-filter 162 is positioned between the cyclone air outlet 145 and the suction motor 162
- the front and rear face of the pre-motor filter are each preferably transverse to the direction of airflow leaving the cyclone outlet 145 .
- the direction of airflow through the pre-motor filter 162 is preferably in the same direction as the air leaving the cyclone outlet 145 . Accordingly, in this preferred embodiment, while the air may spread out or converge as it travels through the pre-motor filter 162 , some and preferably all of the air continues to generally travel in the same direction, namely rearwardly.
- cyclone 122 may of any configuration and orientation.
- cyclone 122 comprises a chamber wall 142 , which in the example shown, is cylindrical.
- the cyclone chamber is located inside chamber wall 142 .
- the cyclone 122 extends along an axis 123 , which, in the example shown, is preferably parallel to the nozzle axis, and/or preferably parallel to the cleaner axis 125 .
- Axis 123 preferably extends generally horizontally when cleaner 100 is in use and wheels 135 are seated on a surface.
- Cyclone 122 has a front end 196 , and a rear end 198 . In the example shown, the front end 196 of the cyclone 122 is proximate the front end 108 of the vacuum cleaner 100 .
- the cyclone air inlet 140 and the cyclone air outlet 145 are at the same end of the cyclone 122 and the dirt outlet 146 is at an opposed end.
- the cyclone air outlet 145 may be covered by a screen or shroud or filter as is known in the art.
- the cyclone air inlet 140 is defined by an aperture in the chamber wall 142 .
- the cyclone inlet 140 is preferably at the rear end 198 of the cyclone 122 .
- the inlet passage 139 is configured such that air enters the cyclone 122 in a tangential flow path, e.g., passage 139 may be arcuate.
- outlet 145 is preferably at the rear end 198 of the cyclone. Accordingly, inlet 140 and outlet 145 are at the same end of the cyclone.
- a plate 174 may be provided adjacent outlet passage 144 , spaced from and facing the inlet 176 to outlet passage 144 .
- Plate 174 may be mounted to cyclone 122 via legs 178 .
- plate 174 , and legs 178 form an assembly 182 that is removably mounted in cyclone 122 .
- a screen may be mounted around legs 178 .
- Dirt outlet is preferably at the front 196 of the cyclone 122 , and further, is at the front end 108 of the cleaner 100 .
- the dirt collection chamber 124 may be internal or external to the cyclone chamber. Preferably, as exemplified, the dirt collection chamber is external.
- the dirt collection chamber 124 may be in communication with the cyclone chamber 122 by any means known in the art. Accordingly, one or more dirt outlets may be provided.
- the dirt outlet is at the end opposed to the air inlet and, preferably, the dirt outlet is at the front end 108 .
- dirt collection chamber 124 preferably comprises two portions.
- a first portion 148 is provided immediately adjacent the dirt outlet 146 , and is at the front end 108 of the cleaner 100 .
- a second portion 150 is concentric with the cyclone 122 .
- a lower portion 152 of the second portion 150 is below the cyclone.
- nozzle 112 is positioned below first portion 148 , and lower portion 152 .
- dirt chamber 124 may comprise an annular chamber surrounding the cyclone 122 .
- a separation plate 154 may be provided in the dirt collection chamber 124 , and may be mounted in facing relation to the dirt outlet 146 .
- the separation plate 154 aids in preventing dirt in dirt chamber 124 from re-entering cyclone 122 .
- plate 154 is spaced from dirt outlet 146 .
- Plate 154 may be mounted by any means to any component in cyclone unit 114 .
- the separation plate may be mounted on an arm 156 , which extends from a front wall 158 at the front end 190 of the cyclone unit 114 .
- Cyclone unit 114 may be emptied by any means known in the art.
- one of the ends of the cyclone unit 114 may be openable and/or removable. The end may open cyclone chamber as well as the dirt collection chamber.
- front wall 158 is pivotally mounted to the cyclone unit wall 115 , and provides an openable door of the cyclone unit 114 . Accordingly, cyclone unit 114 may be opened, and dirt chamber 124 may be emptied.
- the dirt collection chamber 124 is preferably openable both when the dirt collection chamber 124 is mounted to the hand vacuum cleaner, or when it is optionally removed, as will be described hereinbelow.
- front wall 158 when front wall 158 is pivoted away from the remainder of the cyclone unit 114 , separation plate 154 and arm 156 also pivot away from the remainder of the cyclone unit.
- a latch 159 or other securing member or members may be provided, which secure front wall 158 to wall 115 .
- front wall 158 may be removable from cyclone unit wall 115 , or the rear wall 179 of the cyclone unit 114 may be openable or removable. In an alternate embodiment, only the dirt chamber may be removable.
- the rear portion of the dirt collection chamber 124 may be closed by wall 179 .
- the clean air exiting cyclone 122 passes through outlet 145 of outlet passage 144 , exits surface cleaning head 116 , and passes into the cleaner body 160 .
- the cleaner body 160 is downstream of the surface cleaning head 116 , and positioned rearward of the surface cleaning head 116 .
- the cleaner body comprises a suction motor housing 168 , which houses an optional pre-motor filter 162 , a suction motor 164 and may house an optional post-motor filter 166 .
- the air flow passage includes a generally linear airflow path (indicated by arrow A 1 ) between outlet 145 and suction motor 164 . That is, the air flow passage does not comprise significant bends between outlet 145 and suction motor 164 .
- suction motor housing 168 further houses a pre-motor filter 162 .
- Pre-motor filter 162 is provided in the airflow path preferably adjacent and downstream of the outlet passage 144 , and preferably facing the outlet 145 .
- Pre-motor filter 162 has an inlet 163 , and an outlet 167 .
- Pre-motor filter 162 serves to remove remaining particulate matter from air exiting the cyclone 122 , and may be any type of filter, such as a foam filter.
- the cyclone unit 114 , the pre motor filter 162 , and the suction motor 164 are arranged linearly.
- Suction motor 164 is provided in the airflow path adjacent and downstream of the pre-motor filter 162 .
- the suction motor 164 may be any type of suction motor.
- the suction motor draws air into the dirty air inlet 118 of the cleaner 100 , through the airflow path past the suction motor 164 , and out of the clean air outlet 120 .
- the suction motor 164 has a motor axis 165 , which is generally parallel to the axis of rotation of a suction fan (not shown) of the suction motor.
- the motor axis 165 and the cyclone axis 123 extend in the same direction and are generally parallel.
- the inlet 163 and the outlet 167 of the pre-motor 162 filter are generally transverse to the motor axis 165 . That is, the inlet 163 and the outlet 167 of the pre-motor filter 162 are defined in planes that are transverse to the motor axis 165 .
- the cleaner body 160 preferably further comprises a post-motor filter housing 170 .
- a post motor filter 166 is provided in the post-motor filter housing 170 .
- the post motor filter 166 is provided in the airflow path downstream of, and preferably adjacent, the suction motor 164 .
- the post-motor filter comprises an inlet 169 and an outlet 171 .
- Outlet 171 is at the rear 110 of cleaner 100 .
- the plane of the inlet 169 and, preferably in addition, the plane of the outlet 171 are generally transverse to the motor axis 165 .
- the pre-motor filter air inlet 163 , the pre-motor filter air outlet 167 , the post motor filter air inlet 169 and optionally the post motor filter air outlet 171 are aligned.
- Post motor filter 166 serves to remove remaining particulate mater from air exiting the cleaner 100 .
- Post-motor filter 166 may be any type of filter, such as a HEPA filter.
- Clean air outlet 120 is provided downstream of post-motor filter 166 .
- Clean air outlet 120 may comprise a plurality of apertures formed in housing 170 .
- cleaner body 160 is preferably removably mounted to surface cleaning head 116 , such as by a bayounet mount, a screw mount or hand manipulateable mechanical fasteners.
- cleaner body 160 may be entirely removable from surface cleaning head 116 , or pivotally mounted to surface cleaning head 116 . Accordingly, cleaner body 160 and surface cleaning head 116 may be separated in order to provide access to the interior of cleaner body 160 or surface cleaning head 116 . This may allow pre-motor filter 162 to be cleaned, changed, or serviced, or motor 164 to be cleaned, changed or serviced.
- surface cleaning head 116 may be cleaned or serviced. For example, any dirt stuck in outlet passage 144 may be removed.
- a replacement cleaner body 160 or surface cleaning head 116 may be provided, and may be mounted to an existing surface cleaning head 116 or cleaner body 160 , respectively.
- One or more additional wheels 180 may be mounted to housing 161 , preferably at lower portion 106 , and may be used in conjunction with wheels 135 .
- a single rear wheel 180 is provided.
- rear wheel 180 is located on a centre line of the vacuum cleaner and rearward of the depending wall 128 .
- FIG. 8 in which like numerals refer to like features, with the first digit incremented to 8 to refer to the figure number, an alternate example of a hand vacuum cleaner 800 is shown.
- front wall 858 is not pivotally mounted to wall 815 .
- wall surface cleaning head 816 is pivotally mounted to body 860 .
- Cleaner 800 further comprises a second optional cyclone unit 851 downstream of the first cyclone unit 814 , between first cyclone unit 814 and pre-motor filter 862 .
- the second cyclone unit 851 comprises a plurality of cyclones in parallel. Each of the plurality of cyclones is parallel to the first cyclone axis 823 .
- Second cyclone unit 851 has an air inlet 853 and a plurality of air outlets 855 .
- the direction of flow into the inlet 853 (indicated by arrow A 2 ), and out of the outlets 855 (indicated by arrows A 3 ) is the same as the direction of flow through the outlet 845 of the first cyclone unit 814 (also indicated by arrow A 2 ).
- surface cleaning unit 100 is removably mountable in a surface cleaning apparatus.
- surface cleaning unit 100 may be removably mounted to form a canister type surface cleaning apparatus, or, as shown, an upright surface cleaning apparatus 900 .
- surface cleaning unit 100 is usable as a hand vacuum cleaner, as described hereinabove, as well as being removably mountable in a surface cleaning apparatus.
- surface cleaning unit 100 may be removably mounted in a surface cleaning apparatus, without being usable as a hand vacuum cleaner.
- surface cleaning unit 100 may not be provided with a surface cleaning nozzle 112 , and may serve only as a removable pod of a surface cleaning apparatus.
- upright cleaning apparatus 900 comprises a floor cleaning unit 902 , which comprises a surface cleaning head 904 .
- the surface cleaning head comprises a dirty air inlet 906 .
- a handle 908 is drivingly connected to the surface cleaning head 904 , such that a user may grip the handle 908 and move the surface cleaning head 904 along a surface to be cleaned.
- the surface cleaning unit 100 is connectable in airflow communication with the surface cleaning head 904 . More particularly, the surface cleaning unit is connectable to the surface cleaning head 904 such that an airflow passage extends from the dirty air inlet 906 of the surface cleaning head to the clean air outlet 120 of the surface cleaning unit 100 .
- a portion 910 of the airflow passage extends between the surface cleaning head 904 and the surface cleaning unit 100 .
- the portion 910 comprises a flexible conduit 912 , which in the embodiment shown is hose.
- An attachment member 914 is provided, which connects the flexible conduit 912 to the cyclone unit 114 of the surface cleaning unit.
- the surface cleaning unit 100 is removably mounted to and supported by handle 908 , which extends upwardly from the floor cleaning unit 902 and comprises a handgrip 909 .
- handle 908 comprises a mount 914 .
- mount 914 comprises a U-shaped recess.
- the attachment member 914 is lockably receivable in the U-shaped recess, to mount the surface cleaning unit 100 to the handle 908 such that, the cyclone unit 114 and the suction motor 164 are supported by the handle 908 .
- the attachment member 914 mounts the cyclone unit 114 to the handle 908 .
- any other portion of the surface cleaning unit 100 such as the motor housing 168 , or the handle 102 , may be mounted to the handle 908 .
- the portion may be mounted to the handle indirectly, such as via attachment member 914 as shown, or directly.
- handle 102 may be directly received in a mount provided on handle 908 .
- the first cyclone unit 114 is positioned above the suction motor 164 . That is, the suction motor 164 is below the cyclone unit 114 . Accordingly, the front end 108 of the surface cleaning unit 100 becomes an upper end of the cyclone unit 114 , and the openable door 158 is at the upper end of the cyclone unit 114 .
- the linear airflow path between the first cyclone unit 114 and the suction motor 164 is generally vertical and flows generally downwardly.
- surface cleaning unit 100 is operable both when mounted to the floor cleaning unit 902 , and when removed from the floor cleaning unit 902 . That is, as shown in FIG. 10 , the surface cleaning unit 100 may remain in fluid communication with floor cleaning unit 902 , even when attachment member 914 is removed from mount 914 . Accordingly, a user may hold handle 102 of surface cleaning unit 100 with a first hand, and hold handgrip 909 with a second hand. This may be useful in cleaning hard to reach locations, or small areas.
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Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 12/721,128, filed Mar. 10, 2010, entitled CONFIGURATION OF A SURFACE CLEANING APPARATUS, which is allowed, which itself is
- (a) a continuation-in-part of U.S. patent application Ser. No. 12/675,512 filed Feb. 26, 2010 entitled CYCLONIC SURFACE CLEANING APPARATUS WITH A SPACED APART IMPINGEMENT SURFACE, which is abandoned and which was a national phase entry of PCT/CA2008/001531 which claimed priority from CA2,599,303, and is
- (b) a continuation-in-part of U.S. patent application Ser. No. 12/675,540 filed on Feb. 26, 2010 entitled CYCLONIC SURFACE CLEANING APPARATUS WITH EXTERNALLY POSITIONED DIRT CHAMBER which is pending and which was a national phase entry of PCT/CA2008/001530 which claimed priority from CA2,599,303; and, is
- (c) a continuation-in-part of U.S. patent application Ser. No. 12/675,636 filed Feb. 26, 2010 entitled CYCLONIC SURFACE CLEANING APPARATUS WITH SEQUENTIAL FILTRATION MEMBERS which is abandoned and which was a national phase entry of PCT/CA2008/001519 which claimed priority from CA2,599,303;
- The specification relates to surface cleaning apparatus such as vacuum cleaners. In a preferred embodiment, the specification relates to cyclonic hand vacuum cleaners.
- The following is not an admission that anything discussed below is prior art or part of the common general knowledge of persons skilled in the art.
- PCT publication WO 2008/009890 (Dyson Technology Limited) discloses a handheld cleaning appliance comprising a main body, a dirty air inlet, a clean air outlet and a cyclonic separator for separating dirt and dust from an airflow. The cyclone separator is located in an airflow path leading from the air inlet to the air outlet. The cyclonic separator is arranged in a generally upright orientation (i.e., the air rotates about a generally vertical axis in use). A base surface of the main body and a base surface of the cyclonic separator together form a base surface of the appliance for supporting the appliance on a surface. See also PCT publication WO 2008/009888 (Dyson Technology Limited) and PCT publication WO 2008/009883 (Dyson Technology Limited).
- U.S. Pat. No. 7,370,387 (Black & Decker Inc.) discloses a hand-holdable vacuum cleaner that uses one or more filters and/or cyclonic separation device, and means for adjusting an angle of air inlet relative to a main axis of said vacuum cleaner. In particular, the vacuum cleaner further comprises a rigid, elongate nose having the air inlet at one end thereof, the nose being pivotal relative to a main axis of the vacuum cleaner through an angle of at least 135 degrees.
- The following introduction is provided to introduce the reader to the more detailed discussion to follow. The introduction is not intended to limit or define the claims
- According to one broad aspect, a surface cleaning apparatus and, preferably a cyclonic hand vacuum cleaner and/or a surface cleaning unit that is removably mounted to an upright support structure that is pivotally mounted to a cleaning head is provided wherein at least part, and preferably a substantial portion, of the air flow path between components of the surface cleaning apparatus is linear. Accordingly, one or more components of the vacuum cleaner may be arranged such that the air outlet of an upstream component faces the air inlet of a downstream component. In a preferred embodiment, the outlet from a cyclone is oriented such that the air may travel generally linearly to the inlet of a suction motor. This may be achieved by orienting the axis of a cyclone such that the cyclone axis is generally parallel to the axis of the suction motor. If the hand vacuum cleaner has more than one cyclonic stage, then the outlet of the last pre-motor cyclone or cyclones is preferably oriented such that the air may travel generally linearly to the inlet of a suction motor. It will be appreciated that one or more pre-motor filters may be positioned between the cyclone outlet and the suction motor inlet. Preferably, the air flow through the pre-motor filter or filters is generally linear. It will be appreciated that the air outlet of other components (e.g., a cyclone, filter or suction motor) may also be oriented such that the air may travel generally linearly to the inlet of the next downstream component (e.g., a cyclone, filter or suction motor).
- An advantage of this design is that the backpressure in the airflow path through the hand vacuum cleaner may be reduced. Accordingly, the airflow rate through the hand vacuum cleaner may be increased without increasing the size (and weight) of the suction motor. Alternately, or in addition, a smaller motor may be used with decreasing the airflow rate through the hand vacuum cleaner.
- Accordingly, the hand vacuum cleaner may comprise a front end, a rear end and air flow passage extending from a dirty air inlet to a clean air outlet. A first cyclone unit is positioned in the air flow passage. The first cyclone unit may comprise at least one cyclone comprising a cyclone inlet and a cyclone outlet, and at least one dirt collection chamber. A suction motor is positioned in the air flow passage preferably downstream from the first cyclone unit. The air flow passage may include a generally linear air flow path from the cyclone outlet to the suction motor.
- In some examples, the vacuum cleaner further comprises a pre-motor filter, wherein the first cyclone unit, the pre-motor filter and the suction motor are arranged linearly. Accordingly, the inlets and the outlets may face each other so that the air travels generally in a straight line between the components. It will be appreciated that the components may be arranged along a straight line.
- In some examples, the at least one cyclone has a cyclone axis extending longitudinally through the at least one cyclone, the hand vacuum cleaner has an axis extending from the front end to the rear end, and the cyclone axis is generally parallel to the axis of the hand vacuum cleaner. The cyclone axis may be parallel to an axis extending through the suction motor (e.g., co axial or parallel to the shaft on which a suction fan rotates.
- In some examples, the at least one cyclone has a cyclone axis extending longitudinally through the at least one cyclone, the suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan and the cyclone axis is generally parallel to the motor axis.
- In some examples, the suction motor is positioned rearward of the first cyclone unit.
- In some examples, the first cyclone unit is positioned at the front end of the hand vacuum cleaner.
- In some examples, the dirt collection chamber has an openable door provided at a front end of the first cyclone unit.
- In some examples, the at least one cyclone has a cyclone front end, and a cyclone rear end, and the cyclone air inlet and the cyclone air outlet are at the same end of the at least one cyclone. In some examples, the cyclone air inlet and the cyclone air outlet are at the cyclone rear end. The cyclone may have a dirt outlet and the dirt out is preferably positioned at an end opposed to the end having the cyclone air inlet. Preferably, the cyclone dirt outlet is at the cyclone front end.
- In some examples, the cyclone front end is proximate the front end of the hand vacuum cleaner, the cyclone front end has a dirt outlet, and a separation plate is mounted in facing relation to the dirt outlet.
- In some examples, the dirt collection chamber has an openable door provided at the cyclone front end and the separation plate is mounted to the door. The door may alternately or in addition be removable.
- In some examples, the at least one dirt collection chamber is openable when mounted to the hand vacuum cleaner.
- In some examples, the vacuum cleaner further comprises a suction motor housing. The suction motor is positioned in the suction motor housing and the first cyclone unit is removably mounted to the suction motor housing.
- In some examples, the vacuum cleaner further comprises a pre-motor filter positioned facing the cyclone air outlet and having a pre-motor filter air inlet and a pre-motor filter air outlet. The suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan and the pre-motor filter air inlet and the pre-motor air outlet each define a plane that is generally transverse to the motor axis.
- In some examples, the vacuum cleaner further comprises a post motor filter having a post motor filter air inlet and a post motor filter air outlet, the suction motor has a motor axis extending generally parallel to the axis of rotation of a suction fan, and the post motor filter air inlet and the post motor air outlet are generally transverse to the motor axis.
- In some examples, the vacuum cleaner further comprises a pre-motor filter having a pre-motor filter air inlet and a pre-motor filter air outlet and a post motor filter having a post motor filter air inlet and a post motor filter air outlet, and some, and preferably all, of the pre-motor filter air inlet, the pre-motor air outlet, the post motor filter air inlet and the post motor air outlet are aligned.
- In some examples, the vacuum cleaner further comprises a post motor filter positioned downstream from the suction motor and comprising an air outlet at the rear end of the hand vacuum cleaner.
- In some examples, the vacuum cleaner further comprises the first cyclone unit comprises a single cyclone and a single dirt collection chamber. In other examples, the vacuum cleaner further comprises a second cyclone unit downstream from the first cyclone unit. In such examples, the second cyclone unit may have a second cyclone air inlet having a direction of flow and a second cyclone air outlet having a direction of flow and the direction of flow through the second cyclone air inlet and/or the second cyclone air outlet may be in the same direction as the direction of air flow through the cyclone outlet.
- According to another broad aspect, a surface cleaning apparatus is provided. The surface cleaning apparatus comprises an air flow passage extending from a dirty air inlet to a clean air outlet. The surface cleaning apparatus further comprises a floor cleaning unit comprising a surface cleaning head and a handle drivingly connected thereto. A surface cleaning unit is removably mounted to the floor cleaning unit. The surface cleaning unit comprises a first cyclone unit positioned in the air flow passage. The first cyclone unit comprises at least one cyclone comprising a cyclone inlet and a cyclone outlet and at least one dirt collection chamber. A suction motor is positioned in the air flow passage downstream from the first cyclone unit. The air flow passage includes a generally linear air flow path from the cyclone outlet to the suction motor.
- In some examples, the surface cleaning unit is operable when removed from the floor cleaning unit.
- In some examples, the air flow passage comprises a portion extending from the surface cleaning head to the surface cleaning unit and the portion comprises a flexible conduit.
- In some examples, the first cyclone unit is positioned above the suction motor when the surface cleaning unit is mounted to the floor cleaning unit.
- In some examples, the first cyclone unit has a portion that is openable or removable and the portion is located at an upper end of the first cyclone unit.
- In some examples, the surface cleaning unit is removably mounted to the handle.
- According to another broad aspect, an upright surface cleaning apparatus is provided. The upright surface cleaning apparatus comprises an air flow passage extending from a dirty air inlet to a clean air outlet. A floor cleaning unit is provided which comprises a surface cleaning head and a handle drivingly connected thereto. A first cyclone unit is supported by the handle and is in the air flow passage. The first cyclone unit comprises at least one cyclone comprising a cyclone inlet and a cyclone outlet and at least one dirt collection chamber. A suction motor is supported by the handle below the first cyclone unit.
- In some examples, the cyclone unit is mounted to the handle.
- In some examples, the air flow passage includes a generally linear air flow path from the cyclone outlet to the suction motor.
- It will be appreciated that the vacuum cleaner may incorporate one or more of the features of each of these examples.
- In the detailed description, reference will be made to the following drawings, in which:
-
FIG. 1 is a side plan view of an example of a surface cleaning unit; -
FIG. 2 is a top plan view of the surface cleaning unit ofFIG. 1 ; -
FIG. 3 is a front plan view of the surface cleaning unit ofFIG. 1 ; -
FIG. 4 is a partially exploded rear perspective view of the surface cleaning unit ofFIG. 1 ; -
FIG. 5 is a partially exploded front perspective view of the surface cleaning unit ofFIG. 1 ; -
FIG. 6 is a cross section taken along line 6-6 inFIG. 2 ; -
FIG. 7 is a bottom perspective view of the surface cleaning unit ofFIG. 1 ; -
FIG. 8 is a cross section showing an alternate example of a surface cleaning unit; -
FIG. 9 is a perspective illustration of the surface cleaning unit ofFIG. 1 mounted in a surface cleaning apparatus; and -
FIG. 10 is a perspective illustration of the surface cleaning unit ofFIG. 1 in airflow communication with the surface cleaning apparatus ofFIG. 9 . - Various apparatuses or methods will be described below to provide an example of each claimed invention. No example described below limits any claimed invention and any claimed invention may cover processes or apparatuses that are not described below. The claimed inventions are not limited to apparatuses or processes having all of the features of any one apparatus or process described below or to features common to multiple or all of the apparatuses described below. It is possible that an apparatus or process described below is not an embodiment of any claimed invention.
- In the drawings attached hereto, the hand vacuum cleaner is exemplified as comprising one or two cyclonic stages. It will be appreciated that the
vacuum cleaner 100 may be of various configurations (e.g., different positioning of the cyclonic stages and the suction motor and differing cyclonic stages that may comprise one or more cyclones and one or more filters). - Referring to
FIGS. 1 to 7 , a first example of asurface cleaning unit 100 is shown. In the embodiment shown, the surface cleaning unit 100 (also referred to herein asvacuum cleaner 100 or cleaner 100) is usable as avacuum cleaner 100, and more particularly ahand vacuum cleaner 100. Thevacuum cleaner 100 is movable along a surface to be cleaned by gripping and maneuvering handle 102. The vacuum cleaner includes anupper portion 104, alower portion 106, afront end 108, and arear end 110. Alongitudinal axis 125 of thevacuum cleaner 100 extends between thefront end 108 and therear end 110. In the example shown, handle 102 is provided at theupper portion 104. In alternate examples, handle 102 may be provided elsewhere on thevacuum cleaner 100, for example at the rear 110 and may be of any design. - In the example shown, the
vacuum cleaner 100 comprises anozzle 112 and acyclone unit 114, which together preferably form asurface cleaning head 116 of thevacuum cleaner 100. In the example shown, thesurface cleaning head 116 is preferably provided at thefront end 108 of thevacuum cleaner 100. -
Nozzle 112 engages a surface to be cleaned, and comprises adirty air inlet 118, through which dirty air is drawn into thevacuum cleaner 100. An airflow passage extends from thedirty air inlet 118 to aclean air outlet 120 of the cleaner 100. In the example shown,clean air outlet 120 is at the rear 110 of the cleaner 100. -
Cyclone unit 114 is provided in the airflow passage, downstream of thedirty air inlet 118.Cyclone unit 116 has afront end 190, and arear end 192. - In the example shown, the
cyclone unit 114 is a one piece assembly comprising onecyclone 122, and onedirt collection chamber 124, which are integrally formed. In alternate examples, as will be described hereinbelow with respect toFIG. 8 , thecyclone unit 110 may include more than one cyclonic stage, wherein each cyclonic stage comprises one or more cyclones and one or more dirt chambers. Accordingly, the cyclones may be arranged in parallel and/or in sequence. Further, in alternate examples, thecyclone 122 anddirt collection chamber 124 may be separately formed. - In the example shown, the
nozzle 112 is positioned at thelower portion 106 of thevacuum cleaner 100. Preferably, as exemplified,nozzle 112 is positioned at the bottom of thevacuum cleaner 100, and, preferably, beneath thecyclone unit 114. However, it will be appreciated thatnozzle 112 may be connected to the cyclone unit or dirt collection chamber at alternate locations. - Preferably, as exemplified,
nozzle 112 may be onlower surface 157 ofcyclone unit 114 and may share a wall with thecyclone unit 114. For example, in a particularly preferred design, theupper wall 126 of thenozzle 112 may be a lower wall of thecyclone unit 114. As shown inFIG. 6 ,dirt chamber 124 surrounds the lower portion ofcyclone 122. Accordingly, the upper wall ofnozzle 112 may be part of the lower wall of the dirt chamber. It will be appreciated that ifdirt chamber 124 does not extend around the lower portion ofcyclone 122, then the upper wall ofnozzle 112 may be part of a lower wall ofcyclone 122. - Preferably, in the example shown, the
nozzle 112 is fixedly positioned at thelower portion 106 of thevacuum cleaner 100. That is, thenozzle 112 is not movable (e.g., rotatable) with respect to the remainder of thevacuum cleaner 100, and is fixed at thelower portion 106 of thevacuum cleaner 100. - As shown in
FIGS. 3 and 5 ,nozzle 112 has a width WN, andcyclone unit 114 has a width WC. In the example shown, WN, and WC are about the same. An advantage of this design is that thenozzle 112 may have a cleaning path that is essentially as wide as the hand vacuum itself. - Preferably,
nozzle 112 comprises anairflow chamber 136 wherein at least a portion, and preferably a majority, of thelower surface 134 of the chamber is open. In an alternate design as exemplified byFIG. 8 ,nozzle 812 comprises alower wall 837, which closes lower end 834. Accordingly,nozzle 112 may be of various designs and may be an open sided passage or a closed passage. In either embodiment, it will be appreciated thatnozzle 112 may be mounted or provided oncyclone unit 114 and as exemplified on a lower portion of the dirt collection chamber so as to be removable with the dirt collection chamber - An open sided design is exemplified in
FIG. 7A whereinnozzle 112 comprises anupper nozzle wall 126. In the example shown, theupper nozzle wall 126 comprises aportion 119 of awall 115 of the cyclone unit. - Preferably, one or more depending
walls 128 extend downwardly from theupper nozzle wall 126. The depending wall is preferably generally U-shaped. In one embodiment, a dependingwall 128 is provided rearward ofopening 138. In other embodiments, depending walls may alternately or in addition be provided on the lateral sides ofopening 138. It is preferred that the depending walls may be continuous to define a single wall as shown, or may be discontinuous. The depending walls may be provided on each lateral side ofopening 138 and rearward thereof. Further, dependingwalls 128 may extend a substantial distance to thefront end 108 and, preferably, essentially all the way tofront end 108. The dependingwall 128 may be continuous to define a single wall as shown, or may be discontinuous. The depending wall is preferably rigid (e.g., integrally molded with cyclone unit 114). However, they may be flexible (e.g., bristles or rubber) or moveably mounted to cyclone unit 114 (e.g., hingedly mounted). - Preferably, the
lower end 132 of dependingwall 128 is spaced above the surface being cleaned when the hand vacuum cleaner is placed on a surface to be cleaned. As exemplified inFIG. 6 , whenvacuum cleaner 100 is placed on a floor F,lower end 132 of dependingwall 128 is spaced a distance H above the floor. Preferably distance H is from 0.01 inches to 0.175 inches, more preferably from 0.04 to 0.08 inches. - The height of the depending wall 128 (between
upper nozzle wall 126 and lower end 132) may vary. In some examples, the depending wall may have a height of between about 0.05 and about 0.875 inches, preferably between about 0.125 and about 0.6 inches and more preferably between about 0.2 and about 0.4 inches. The height of dependingwall 128 may vary but is preferably constant. - As exemplified, the open end of the U-shape defines an
open side 130 of thenozzle 114, and forms thedirty air inlet 118 of the cleaner 100. In the example shown, theopen side 130 is provided at the front of thenozzle 114. In use, whenoptional wheels 135 are in contact with a surface, theopen side 130 sits above and is adjacent a surface to be cleaned (e.g. floor F). As mentioned hereinabove, preferably,lower end 132 of dependingwalls 128 is spaced above floor F. Accordingly, some air may enternozzle 114 by passing underneath dependingwall 132. In such a case, the primary air entry tonozzle 114 is viaopen side 130 so thatdirty air inlet 118 is the primary air inlet, with a secondary air inlet being under dependingwall 128. - In the example shown, the
lower end 132 of the dependingwall 128 defines an openlower end 134 of thenozzle 114. The openlower end 134 preferably extends to thefront 108 of the cleaner 100, and merges with theopen side 130. In use, the exemplifiednozzle 112 has an openlower end 134 that faces a surface to be cleaned. - In the example shown, a plurality of
wheels 135 are mounted to the dependingwall 128, and extend lower than thelower end 132 of the dependingwall 128. Accordingly, in use, whenwheels 135 are in contact with a surface, thelower end 132 of the dependingwall 128 is spaced from the surface to be cleaned, and the space between the lower end of the dependingwall 128 and the surface to be cleaned form the secondary dirty air inlet to thevacuum cleaner 100. It will be appreciated thatwheels 135 are optional. Preferably,wheels 135 are positioned exterior to the airflow path throughnozzle 112, e.g., laterally outwardly from dependingwall 128. Preferably a pair offront wheels 135 are provided. Preferably, the wheels are locatedadjacent front 108. Optionally, one or morerear wheels 180 may be provided. In an alternate embodiment, no wheels may be provided. - The
upper nozzle wall 126, dependingwall 128, and openlower end 134 of thenozzle 112 define opensided airflow chamber 136 of the nozzle. - In use, when
wheels 135 are in contact with a horizontal surface, thenozzle 112 and theairflow chamber 136 preferably extend generally horizontally, and preferably linearly along a nozzle axis 113 (seeFIG. 7 ). - An
opening 138 maybe provided in theupper nozzle wall 126, and is in communication with theairflow chamber 136. Opening 138 may be of any size and configuration and at various locations inupper nozzle wall 126. In use, whenwheels 135 are in contact with a surface, theopening 138 faces a surface to be cleaned, air enters thedirty air inlet 118, passes horizontally through theairflow chamber 136, and passes into theopening 138.Opening 138 is in communication with acyclone inlet passage 139, which is in communication with acyclone inlet 140 ofcyclone 122. - As exemplified in
FIGS. 1-7 , a single cyclone is used. As exemplified therein, the direction of air exiting the outlet ofcyclone 122 is the same as the direction of airflow immediately upstream of thesuction motor 164. Further, while anoptional pre-filter 162 is positioned between thecyclone air outlet 145 and thesuction motor 162, the front and rear face of the pre-motor filter are each preferably transverse to the direction of airflow leaving thecyclone outlet 145. Further, the direction of airflow through thepre-motor filter 162 is preferably in the same direction as the air leaving thecyclone outlet 145. Accordingly, in this preferred embodiment, while the air may spread out or converge as it travels through thepre-motor filter 162, some and preferably all of the air continues to generally travel in the same direction, namely rearwardly. - It will be appreciated that
cyclone 122 may of any configuration and orientation. Preferably,cyclone 122 comprises achamber wall 142, which in the example shown, is cylindrical. The cyclone chamber is located insidechamber wall 142. Thecyclone 122 extends along anaxis 123, which, in the example shown, is preferably parallel to the nozzle axis, and/or preferably parallel to thecleaner axis 125.Axis 123 preferably extends generally horizontally when cleaner 100 is in use andwheels 135 are seated on a surface.Cyclone 122 has afront end 196, and arear end 198. In the example shown, thefront end 196 of thecyclone 122 is proximate thefront end 108 of thevacuum cleaner 100. - Preferably, the
cyclone air inlet 140 and thecyclone air outlet 145 are at the same end of thecyclone 122 and thedirt outlet 146 is at an opposed end. Thecyclone air outlet 145 may be covered by a screen or shroud or filter as is known in the art. As exemplified, thecyclone air inlet 140 is defined by an aperture in thechamber wall 142. Thecyclone inlet 140 is preferably at therear end 198 of thecyclone 122. As can be seen inFIG. 5 , theinlet passage 139 is configured such that air enters thecyclone 122 in a tangential flow path, e.g.,passage 139 may be arcuate. The air travels in a cyclonic path in thecyclone 122, and dirt in the air is separated from the air. The air exits the cyclone via anoutlet passage 144, throughoutlet 145.Outlet 145 is preferably at therear end 198 of the cyclone. Accordingly,inlet 140 andoutlet 145 are at the same end of the cyclone. - As exemplified in
FIG. 6 , aplate 174 may be providedadjacent outlet passage 144, spaced from and facing theinlet 176 tooutlet passage 144.Plate 174 may be mounted tocyclone 122 vialegs 178. In the example shown,plate 174, andlegs 178 form anassembly 182 that is removably mounted incyclone 122. In some examples, a screen may be mounted aroundlegs 178. - The dirt that is separated from the air exits the cyclone via
dirt outlet 146, and entersdirt collection chamber 124. Dirt outlet is preferably at thefront 196 of thecyclone 122, and further, is at thefront end 108 of the cleaner 100. Thedirt collection chamber 124 may be internal or external to the cyclone chamber. Preferably, as exemplified, the dirt collection chamber is external. Thedirt collection chamber 124 may be in communication with thecyclone chamber 122 by any means known in the art. Accordingly, one or more dirt outlets may be provided. Preferably, the dirt outlet is at the end opposed to the air inlet and, preferably, the dirt outlet is at thefront end 108. - In the example shown,
dirt collection chamber 124 preferably comprises two portions. Afirst portion 148 is provided immediately adjacent thedirt outlet 146, and is at thefront end 108 of the cleaner 100. Asecond portion 150 is concentric with thecyclone 122. Alower portion 152 of thesecond portion 150 is below the cyclone. As exemplified,nozzle 112 is positioned belowfirst portion 148, andlower portion 152. Accordingly,dirt chamber 124 may comprise an annular chamber surrounding thecyclone 122. - A
separation plate 154 may be provided in thedirt collection chamber 124, and may be mounted in facing relation to thedirt outlet 146. Theseparation plate 154 aids in preventing dirt indirt chamber 124 from re-enteringcyclone 122. Preferably,plate 154 is spaced fromdirt outlet 146.Plate 154 may be mounted by any means to any component incyclone unit 114. As exemplified, the separation plate may be mounted on anarm 156, which extends from afront wall 158 at thefront end 190 of thecyclone unit 114. -
Cyclone unit 114 may be emptied by any means known in the art. For example, one of the ends of thecyclone unit 114 may be openable and/or removable. The end may open cyclone chamber as well as the dirt collection chamber. As exemplified inFIGS. 4 and 5 ,front wall 158 is pivotally mounted to thecyclone unit wall 115, and provides an openable door of thecyclone unit 114. Accordingly,cyclone unit 114 may be opened, anddirt chamber 124 may be emptied. Thedirt collection chamber 124 is preferably openable both when thedirt collection chamber 124 is mounted to the hand vacuum cleaner, or when it is optionally removed, as will be described hereinbelow. If aplate 124 is provided on the front wall, then whenfront wall 158 is pivoted away from the remainder of thecyclone unit 114,separation plate 154 andarm 156 also pivot away from the remainder of the cyclone unit. Alatch 159 or other securing member or members may be provided, which securefront wall 158 towall 115. In alternate examples,front wall 158 may be removable fromcyclone unit wall 115, or the rear wall 179 of thecyclone unit 114 may be openable or removable. In an alternate embodiment, only the dirt chamber may be removable. - The rear portion of the
dirt collection chamber 124 may be closed by wall 179. - The clean
air exiting cyclone 122 passes throughoutlet 145 ofoutlet passage 144, exitssurface cleaning head 116, and passes into thecleaner body 160. In the example shown, thecleaner body 160 is downstream of thesurface cleaning head 116, and positioned rearward of thesurface cleaning head 116. The cleaner body comprises asuction motor housing 168, which houses an optionalpre-motor filter 162, asuction motor 164 and may house an optionalpost-motor filter 166. As can be seen inFIG. 6 , the air flow passage includes a generally linear airflow path (indicated by arrow A1) betweenoutlet 145 andsuction motor 164. That is, the air flow passage does not comprise significant bends betweenoutlet 145 andsuction motor 164. - In the example shown,
suction motor housing 168 further houses apre-motor filter 162. One or more filters may be used.Pre-motor filter 162 is provided in the airflow path preferably adjacent and downstream of theoutlet passage 144, and preferably facing theoutlet 145.Pre-motor filter 162 has aninlet 163, and anoutlet 167.Pre-motor filter 162 serves to remove remaining particulate matter from air exiting thecyclone 122, and may be any type of filter, such as a foam filter. As can be seen inFIG. 6 , thecyclone unit 114, thepre motor filter 162, and thesuction motor 164 are arranged linearly. -
Suction motor 164 is provided in the airflow path adjacent and downstream of thepre-motor filter 162. Thesuction motor 164 may be any type of suction motor. The suction motor draws air into thedirty air inlet 118 of the cleaner 100, through the airflow path past thesuction motor 164, and out of theclean air outlet 120. Thesuction motor 164 has amotor axis 165, which is generally parallel to the axis of rotation of a suction fan (not shown) of the suction motor. In the example shown, themotor axis 165 and thecyclone axis 123 extend in the same direction and are generally parallel. Further, in the example shown, theinlet 163 and theoutlet 167 of the pre-motor 162 filter are generally transverse to themotor axis 165. That is, theinlet 163 and theoutlet 167 of thepre-motor filter 162 are defined in planes that are transverse to themotor axis 165. - The
cleaner body 160 preferably further comprises apost-motor filter housing 170. Apost motor filter 166 is provided in thepost-motor filter housing 170. Thepost motor filter 166 is provided in the airflow path downstream of, and preferably adjacent, thesuction motor 164. The post-motor filter comprises aninlet 169 and anoutlet 171.Outlet 171 is at the rear 110 of cleaner 100. In the example shown, the plane of theinlet 169 and, preferably in addition, the plane of theoutlet 171 are generally transverse to themotor axis 165. Accordingly, the pre-motorfilter air inlet 163, the pre-motorfilter air outlet 167, the post motorfilter air inlet 169 and optionally the post motorfilter air outlet 171 are aligned.Post motor filter 166 serves to remove remaining particulate mater from air exiting the cleaner 100.Post-motor filter 166 may be any type of filter, such as a HEPA filter. -
Clean air outlet 120 is provided downstream ofpost-motor filter 166.Clean air outlet 120 may comprise a plurality of apertures formed inhousing 170. - In the example shown,
cleaner body 160 is preferably removably mounted to surface cleaninghead 116, such as by a bayounet mount, a screw mount or hand manipulateable mechanical fasteners. For example,cleaner body 160 may be entirely removable fromsurface cleaning head 116, or pivotally mounted to surface cleaninghead 116. Accordingly,cleaner body 160 andsurface cleaning head 116 may be separated in order to provide access to the interior ofcleaner body 160 orsurface cleaning head 116. This may allowpre-motor filter 162 to be cleaned, changed, or serviced, ormotor 164 to be cleaned, changed or serviced. Alternately,surface cleaning head 116 may be cleaned or serviced. For example, any dirt stuck inoutlet passage 144 may be removed. Alternately, a replacementcleaner body 160 orsurface cleaning head 116 may be provided, and may be mounted to an existingsurface cleaning head 116 orcleaner body 160, respectively. - One or more
additional wheels 180 may be mounted tohousing 161, preferably atlower portion 106, and may be used in conjunction withwheels 135. Preferably, a singlerear wheel 180 is provided. Preferably,rear wheel 180 is located on a centre line of the vacuum cleaner and rearward of the dependingwall 128. - Referring now to
FIG. 8 , in which like numerals refer to like features, with the first digit incremented to 8 to refer to the figure number, an alternate example of ahand vacuum cleaner 800 is shown. In this example,front wall 858 is not pivotally mounted towall 815. Rather, wallsurface cleaning head 816 is pivotally mounted tobody 860. - Cleaner 800 further comprises a second
optional cyclone unit 851 downstream of thefirst cyclone unit 814, betweenfirst cyclone unit 814 andpre-motor filter 862. In the example shown, thesecond cyclone unit 851 comprises a plurality of cyclones in parallel. Each of the plurality of cyclones is parallel to the first cyclone axis 823.Second cyclone unit 851 has anair inlet 853 and a plurality ofair outlets 855. The direction of flow into the inlet 853 (indicated by arrow A2), and out of the outlets 855 (indicated by arrows A3) is the same as the direction of flow through theoutlet 845 of the first cyclone unit 814 (also indicated by arrow A2). - Referring now to
FIGS. 9 and 10 , in some embodiments,surface cleaning unit 100 is removably mountable in a surface cleaning apparatus. For example,surface cleaning unit 100 may be removably mounted to form a canister type surface cleaning apparatus, or, as shown, an uprightsurface cleaning apparatus 900. Preferably, as shown,surface cleaning unit 100 is usable as a hand vacuum cleaner, as described hereinabove, as well as being removably mountable in a surface cleaning apparatus. In alternate embodiments,surface cleaning unit 100 may be removably mounted in a surface cleaning apparatus, without being usable as a hand vacuum cleaner. For examplesurface cleaning unit 100 may not be provided with asurface cleaning nozzle 112, and may serve only as a removable pod of a surface cleaning apparatus. - In the embodiment shown,
upright cleaning apparatus 900 comprises afloor cleaning unit 902, which comprises asurface cleaning head 904. The surface cleaning head comprises adirty air inlet 906. Ahandle 908 is drivingly connected to thesurface cleaning head 904, such that a user may grip thehandle 908 and move thesurface cleaning head 904 along a surface to be cleaned. - As exemplified, the
surface cleaning unit 100 is connectable in airflow communication with thesurface cleaning head 904. More particularly, the surface cleaning unit is connectable to thesurface cleaning head 904 such that an airflow passage extends from thedirty air inlet 906 of the surface cleaning head to theclean air outlet 120 of thesurface cleaning unit 100. For example, as shown, aportion 910 of the airflow passage extends between thesurface cleaning head 904 and thesurface cleaning unit 100. Theportion 910 comprises aflexible conduit 912, which in the embodiment shown is hose. Anattachment member 914 is provided, which connects theflexible conduit 912 to thecyclone unit 114 of the surface cleaning unit. - As exemplified, the
surface cleaning unit 100 is removably mounted to and supported byhandle 908, which extends upwardly from thefloor cleaning unit 902 and comprises ahandgrip 909. Preferably, handle 908 comprises amount 914. In the embodiment shown,mount 914 comprises a U-shaped recess. Theattachment member 914 is lockably receivable in the U-shaped recess, to mount thesurface cleaning unit 100 to thehandle 908 such that, thecyclone unit 114 and thesuction motor 164 are supported by thehandle 908. - In the exemplified embodiment, the
attachment member 914 mounts thecyclone unit 114 to thehandle 908. In alternate embodiments, any other portion of thesurface cleaning unit 100, such as themotor housing 168, or thehandle 102, may be mounted to thehandle 908. Further, the portion may be mounted to the handle indirectly, such as viaattachment member 914 as shown, or directly. For example handle 102 may be directly received in a mount provided onhandle 908. - As can be seen in
FIG. 9 , preferably, when thesurface cleaning unit 100 is mounted to thefloor cleaning unit 902, thefirst cyclone unit 114 is positioned above thesuction motor 164. That is, thesuction motor 164 is below thecyclone unit 114. Accordingly, thefront end 108 of thesurface cleaning unit 100 becomes an upper end of thecyclone unit 114, and theopenable door 158 is at the upper end of thecyclone unit 114. When thesurface cleaning unit 100 is in this configuration, the linear airflow path between thefirst cyclone unit 114 and thesuction motor 164 is generally vertical and flows generally downwardly. - Preferably,
surface cleaning unit 100 is operable both when mounted to thefloor cleaning unit 902, and when removed from thefloor cleaning unit 902. That is, as shown inFIG. 10 , thesurface cleaning unit 100 may remain in fluid communication withfloor cleaning unit 902, even whenattachment member 914 is removed frommount 914. Accordingly, a user may hold handle 102 ofsurface cleaning unit 100 with a first hand, and holdhandgrip 909 with a second hand. This may be useful in cleaning hard to reach locations, or small areas.
Claims (27)
Priority Applications (8)
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US16/549,189 US11700983B2 (en) | 2007-08-29 | 2019-08-23 | Configuration of a surface cleaning apparatus |
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US18/345,395 US12048409B2 (en) | 2007-03-11 | 2023-06-30 | Portable surface cleaning apparatus |
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PCT/CA2008/001530 WO2009026709A1 (en) | 2007-08-29 | 2008-08-28 | Cyclonic surface cleaning apparatus with externally positioned dirt chamber |
PCT/CA2008/001531 WO2009026710A1 (en) | 2007-08-29 | 2008-08-28 | Cyclonic surface cleaning apparatus with a spaced apart impingement surface |
CA 2658005 CA2658005A1 (en) | 2009-03-11 | 2009-03-11 | Configuration of a surface cleaning apparatus |
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US20200046182A1 (en) | 2020-02-13 |
US10542856B2 (en) | 2020-01-28 |
US20100251506A1 (en) | 2010-10-07 |
US8950039B2 (en) | 2015-02-10 |
US11700983B2 (en) | 2023-07-18 |
US20180303298A1 (en) | 2018-10-25 |
US20170119221A1 (en) | 2017-05-04 |
US20190374079A1 (en) | 2019-12-12 |
US11571095B2 (en) | 2023-02-07 |
US10561286B2 (en) | 2020-02-18 |
US10433686B2 (en) | 2019-10-08 |
US20180303297A1 (en) | 2018-10-25 |
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