EP0114114B1 - Abfallaufsammelgerät - Google Patents

Abfallaufsammelgerät Download PDF

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Publication number
EP0114114B1
EP0114114B1 EP19840300247 EP84300247A EP0114114B1 EP 0114114 B1 EP0114114 B1 EP 0114114B1 EP 19840300247 EP19840300247 EP 19840300247 EP 84300247 A EP84300247 A EP 84300247A EP 0114114 B1 EP0114114 B1 EP 0114114B1
Authority
EP
European Patent Office
Prior art keywords
conduit
air
flow
debris
impeller
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
Application number
EP19840300247
Other languages
English (en)
French (fr)
Other versions
EP0114114A1 (de
Inventor
Brian Henning
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.)
Black and Decker Inc
Original Assignee
Black and Decker Inc
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
Priority claimed from GB838301278A external-priority patent/GB8301278D0/en
Priority claimed from GB838305642A external-priority patent/GB8305642D0/en
Application filed by Black and Decker Inc filed Critical Black and Decker Inc
Priority to AT84300247T priority Critical patent/ATE37280T1/de
Publication of EP0114114A1 publication Critical patent/EP0114114A1/de
Application granted granted Critical
Publication of EP0114114B1 publication Critical patent/EP0114114B1/de
Expired 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
    • 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
    • A47L5/14—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning

Definitions

  • This invention relates to a debris collecting apparatus, and in particular, but not exclusively, an apparatus for collecting garden debris, of the kind which may be used either in a vacuum mode to suck debris into the apparatus or in a blowing mode to discharge a stream of air from a nozzle so that debris can be blown into piles.
  • Such debris collecting apparatus is already known.
  • a centrifugal impeller is used to blow air through an outlet to which, in the blowing mode, a length of pipe is connected.
  • the pipe is disconnected from the outlet of the impeller and connected to its central inlet; in this mode, debris passes through the impeller which will inevitably result in wear to the impeller even though a chopping blade may be mounted on the impeller shaft immediately upstream of the impeller.
  • air is discharged longitudinally in a jet into the centre of a first tube at a location where a second tube is joined at right angles.
  • air is drawn from the second tube into the first by the jet of air; debris is sucked into an open end of the second tube and passes from there into the first tube to a collecting bag.
  • the first tube is closed downstream of the junction with the second tube so that the air discharged into the first tube is forced to travel up the second tube and is blown out of its open end.
  • two modes of operation ie a vacuum mode and a blowing mode
  • a vacuum mode the nozzle is connected to the central intake of the fan, and dust-carrying air is drawn in by the fan via a filter end dust-collection chamber, the cleaned air being discharged at the periphery of the fan.
  • the blowing mode the nozzle is connected instead to the outlet at the periphery of the fan to discharge a stream of air.
  • This apparatus requires the use of alternative components to connect the nozzle either to the intake or the outlet of the fan as required.
  • a debris collecting apparatus including a debris conduit one end of which is an operating end; means for discharging air into the conduit through at least one opening in the wall thereof, and a switch arrangement operable to switch the air flow between a first "vacuum” flow in which the air discharged into the conduit induces an air flow from the operating end to the other end of the conduit and a second "blowing" flow in which the air discharged into the conduit is discharged from the conduit through the operating end, characterized in that the means for discharging air comprises an impeller arranged adjacent to the opening to discharge air into the conduit in a region where the conduit wall is devoid of any sudden and substantial change in direction and in that the switch arrangement is adjacent to the said opening.
  • An arrangement of this kind has the advantage that while it is still possible to use the apparatus either as a vacuum device or as a blower, the debris conduit can be designed without any rners or obstructions where debris might beme trapped.
  • the apparatus is, moreoever, self contained and the location of the switch arrangement so that it co-operates with the air discharge opening in the side of the debris conduit leaves the end of the conduit free to receive some form of debris collector, for example, a bag.
  • the impeller is arranged to discharge air into the conduit towards the said other end at an acute angle to the lengthwise direction of the conduit. Introducing the air flow from the side of the conduit does not impede the passage of debris along the conduit. The air may, if desired, be discharged into the conduit in a ring around the whole of the conduit.
  • the debris conduit is preferably substantially inflexible in the region where air is discharged into the conduit and preferably substantially straight and inflexible along its whole length. Flexibility is undesirable as any bend in the debris conduit can result in twigs or other objects being stuck in the conduit.
  • the impeller may be a cross flow fan and may be driven by an electric motor.
  • the impeller which may be located within a housing which is lined with acoustic foam, may be arranged to draw air through the motor housing.
  • the apparatus may have a handle which is connected to the motor housing and which includes a switch for actuating the motor.
  • a debris collector in the form of a collecting bag is removably connected to the said other end of the conduit and the switch arrangement is held in the "blowing" flow position when the collecting bag is detached.
  • the switch arrangement may comprise a valve member which is inoperative in a first position corresponding to "vacuum” flow but which when switched to a second position corresponding to “blowing” flow blocks the debris conduit between a point at which air is discharged into the conduit and the said other end.
  • the valve member may be so shaped that when in the second position, it directs the air discharged into the conduit towards the operating end. This improves the efficiency of the apparatus in the blowing mode.
  • the switch arrangement may comprise and air flow guide movable between a first position corresponding to "vacuum” flow in which the air discharged from the impeller induces an air flow in the debris conduit from the operating end to the said other end and a second position corresponding to "blowing” flow in which air is discharged from the impeller through the air flow guide into the conduit and is diverted by the guide to flow towards the operating end of the conduit.
  • the air flow guide may comprise one or more vanes carried on a member slidably mounted in the conduit wall.
  • the air flow guide leaves the opening in the side of the conduit substantially unblocked but in its second position the vanes are located in the opening.
  • a part of the air flow guide in its first position, is arranged to guide air discharged into the debris conduit.
  • the debris collecting apparatus 1 shown in Figs. 1, 2, 3 and 7 is principally intended for collecting garden debris and has a debris conduit 2 of generally rectangular cross-section to one end of which is detachably connected a tube 3 having an operating end 4 and to the other end of which is detachably connected a diffuser 5 having a collecting bag 6 attached thereto.
  • the tube 3 and diffuser 5 may be detachably connected to the conduit 2 by any suitable means, for example by screw threads.
  • a housing 7 to the side of the debris conduit is lined with acoustic foam and houses a cross flow fan 8 driven by a motor 28 housed in a motor casing 9.
  • a subsidiary air inlet to the fan housing from the motor casing 9 is provided by an aperature 10 and a main air inlet (not shown) is provided in the fan housing approximately opposite the aperture 10.
  • the fan has an outlet 11 through which air is directed into the conduit 2 at an angle of about 30° thereto.
  • the motor casing 9, which is secured to the fan housing, has a motor compartment 12 in which the motor 28 (and also, if desired, a motor cooling fan) is located.
  • the motor armature shaft passes through a bearing 13 at the end of the motor casing and carries the fan 8 at its free end.
  • the end of the motor compartment adjacent the fan housing is surrounded by an annular air passage 14 which communicates with the motor compartment through slots 15 in the compartment wall.
  • the air passage 14 in turn is connected to the fan housing through the aperture 10.
  • air inlet slots 16 are provided at the opposite end of the motor compartment to the slots.
  • a handle 17 is fixed to the motor compartment and carries an electric switch 18 for controlling the operation of the apparatus which is powered from the mains supply via a cable (not shown).
  • the fan 8 is in this particular example a double sided cross-flow fan having twenty blades, indicated by reference numeral 19 on each side.
  • the collecting bag 6 has an open mesh construction but over the side of the bag which in use lies against a user's body, the bag is rendered impermeable by the provision of a plastics sheet.
  • the bottom of the bag is openable to enable collected debris to be emptied from the bag; the bottom of the bag may for example be open and a resilient strip of 'C' shaped cross-section provided to close the bag.
  • a valve member 20 is pivotally mounted on a pivot 27 in the side wall of the debris conduit 2 adjacent to the outlet 11 of the fan; the valve member 20 is movable between the position shown in solid outline in Fig. 1 to that shown in dotted outline and movement of the valve member is controlled by an actuating lever 21 mounted on a pivot 22 and connected to the valve member 20 by a link 23 pivotally connected at each end.
  • a tension spring 24 biases the lever 21 to the position shown in Fig. 1.
  • An 'L' shaped member 25 is slidably mounted in a slot in the debris conduit 2 and is biased to the left (as seen in Fig. 1) by a compression spring 26, but with the diffuser 5 and bag 6 connected it is held in the position shown in Fig. 1. In this position, the member 25 defines the rest position of the actuating lever 21 by virtue of its abutment therewith; if, however, the diffuser 5 is removed the member 25 slides to the left under the bias of the spring 26 and engagement of the member 25 with the lever 21 rotates the valve member 20 into the position shown in dotted outline in Fig. 1.
  • the fan 8 which rotates clockwise as seen in Fig. 1, draws air through the main air inlet and also through the motor compartment and discharges the air through the outlet 11 into the debris conduit 2.
  • the discharge of air induces a flow of air along the debris conduit from the operating end 4.
  • the user holds the apparatus by the handle 17 with the tube 3 inclined downwardly (a position which the apparatus naturally adopts) and moves the operating end 4 over areas from which debris is to be collected. The debris passes into the conduit through the end 4 and then has a straight and uninterrupted passage into the collecting bag 6.
  • the user wishes to use the device in the blowing mode, he merely depresses the free end of the lever 21 thereby rotating the lever and moving the valve member 20 into the position shown in dotted outline. In this position, air discharged through the outlet 11 is turned and directed along the tube 3 and out through the operating end 4.
  • the valve member is positioned so that it defines an extension of the outlet 11 and is curved to assist in the re-directing of the air discharged from the fan.
  • the apparatus can only be used in the blowing mode so that there is no risk of a user being struck by debris flying out of the debris conduit 2.
  • the debris conduit is of rectangular cross-section but, alternatively, the conduit may be of circular cross-section.
  • Fig. 4 shows a modified form of the apparatus of Fig. 1.
  • the description of this embodiment will be confined largely to the features not present in the apparatus of Fig. 1 and it should be understood that the various alternatives described in relation to Fig. 1 are also applicable to the apparatus of Fig. 4. Similar parts are designated by the same reference numerals in Figs. 1 and 4.
  • the main feature of the embodiment of Fig. 4 is the use of an air flow guide 30 to control the direction of air flow in the conduit 2 in place of the valve member 20.
  • the air flow guide 30 comprises a wedge shaped part 31 and a vane assembly 32 and is integrally formed with an actuating member 33, with an opening 34 provided between the member 33 and part 31.
  • the guide 30 is slidably mounted on the top of the debris conduit and the actuating member 33 carries a mounting for one end of a tension spring 54, the other end of which is anchored to the housing 7.
  • the vane assembly 32 is made up of a series of vanes 39 between which passageways 40 are provided. It will be seen that the passageways 40 turn through an angle of the order of 90° in passing through the vane assembly 32.
  • a user lifts the free end of the actuating member 33 against the bias of the leaf spring 35 thereby disengaging the pip 36 from the peripheral rib 37.
  • the actuating member then moves out from the housing under the bias of the tension spring 34 to its limit position in which the vane assembly 32 is located over the outlet 11 and the opening 34 lies over a closed part of the housing 7. In this position, air is discharged by the fan 8 in the direction of the arrows and passes through the passageways 40 in the vane assembly where it is turned and directed into the conduit 2 towards the operating end 4.
  • the debris conduit is able to provide smooth boundary walls thereby reducing to a minimum the risk of the conduit being blocked.
  • the arrangement can be used on ducts of different shapes and sizes so that, if desired, a duct of relatively iarge cross-section can be used thus reducing again the likelihood of blockages.
  • Figs. 5 and 6 show an alternative form of vane assembly 42 that may be used in the apparatus.
  • the assembly 42 is made up of a central web 43 from each side of which vanes 44 extend. Passageways 45 are provided between adjacent vanes and these turn through an angle of about 150° from one end to the other.
  • the fan is arranged to discharge air at an angle of about 15° to the longitudinal axis of the debris conduit. The angle of entry of air into the conduit can be selected by experiment to give the optimum performance for the particular shape of debris conduit employed.

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (19)

1. Abfallsammelvorrichtung mit einer Abfalleitung (2), deren eines Ende (4) ein Betriebsende ist; Mitteln zum Abgeben von Luft in die Leitung durch mindestens eine Öffnung (11, 34) in ihrer Wand, einer Schalteranordnung (20, Figur 1, 30, Figur 4), die zum Schalten des Luftstroms zwischen einem ersten "Vakuum"-Strom, bei dem die in die Leitung abgegebene Luft einen Luftstrom vom Betriebsende zum anderen Ende der Leitung induziert, und einem zweiten "Blas"-Strom schaltbar ist, bei dem die in die Leitung abgegebene Luft von der Leitung durch das Betriebsende abgegeben wird, dadurch gekennzeichnet, daß die Mittel zur Abgabe von Luft ein benachbart zu der Öffnung (11, 34) angeordnetes Flügelrad (8) aufweist, um Luft in einem Bereich in die Leitung (2) abzugeben, in dem die Leitungswand frei von irgendwelchen plötzlichen und wesentlichen Richtungsänderungen ist, und daß sich die Schalteranordnung benachbart zu der Öffnung (11, 34) befindet.
2. Vorrichtung nach Anspruch 1, bei der das Flügelrad zur Abgabe von Luft in die Leitung (2) zum anderen Ende unter einem spitzen Winkel zur Längsrichtung der Leitung angeordnet ist.
3. Vorrichtung nach Anspruch 1 oder 2, bei der die Abfalleitung (2) im Abgabebereich im wesentlichen unflexibel ist.
4. Vorrichtung nach Anspruch 3, bei der die Abfalleitung (2) entlang ihrer gesamten Länge im wesentlichen unflexibel ist.
5. Vorrichtung nach einem der vorhergehenden Ansprüche bei der die Abfalleitung (2) entlang ihrer Länge im wesentlichen gerade ist.
6. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der das Flügelrad (8) ein Querstromgebläse ist.
7. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der das andere Ende der Leitung ein Sammelende ist, mit dem ein Schmutzsammler (6) lösbar verbunden ist, und bei dem die Schalteranordnung (20, 30) in der "Blas"-Strom-Stellung gehalten wird, wenn der Abfallsammler vom Sammelende der Leitung (2) abgenommen ist.
8. Vorrichtung nach Anspruch 7, bei der die Schalteranordnung (20, 30) in Richtung auf die "Blas"-Strom-Stellunmg elastisch vorgespannt ist und Betätigungsmittel zur Bewegung der Schalteranordnung in die Vakuum-Strom-Stellung aufweist, der Schmutzsammler betätigbar ist, um die Schalteranordnung in der "Vakuum"-Strom-Stellung zu halten und die Bewegung der Schalteranordnung in die "Blas"-Strom-Stellung unter Wirkung der elastischen Vorspannung zu ermöglichen, wenn der Schmutzsammler abgenommen ist.
9. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der die Schalteranordnung ein Ventilelement (20) enthält, das in einer ersten Stellung entsprechend dem "Vakuum"-Strom unwirksam ist, das jedoch bei Schaltung in eine zweite Stellung entsprechend dem "Blas"-Strom die Abfalleitung zwischen einer Stelle, an der die Luft in die Leitung abgegeben wird, und dem anderen Ende blockiert.
10. Vorrichtung an Anspruch 9, bei der das Ventilelement (10) so geformt ist, daß es in der zweiten Stellung in die Leitung abgegebene Luft zum Betriebsende (4) lenkt.
11. Vorrichtung nach Anspruch 9 oder Anspruch 10, bei der das Ventilelement schwenkbar in der Leitung befestigt und gekrümmt ist, um Luft zum Betriebsende zu lenken, wenn es sich in der "Blas"-Strom-Stellung befindet, wobei das Ventilelement in einer Aussparung in der Seitenwand der Leitung liegt, wenn es sich in der "Vakuum"-Strom-Stellung befindet.
12. Vorrichtung nach Anspruch 9 oder Anspruch 10, bei der sich das Ventilelement in der "Vakuum"-Strom-Stellung außerhalb des Luftströmungsweges vom Betriebsende zum anderen Ende befindet, um einen ungestörten Durchgang für den Abfall während des "Vakuum"-Stroms zu erhalten.
13. Vorrichtung nach einem der Ansprüche 1 bis 7, bei der die Schalteranordnung eine Luftstromführung (30, Figur 4) aufweist, die zwischen einer ersten Stellung entsprechend dem "Vakuum"-Strom, in der vom Flügelrad abgegebene Luft in der Abfalleitung einen Luftstrom vom Betriebsende (4) zum anderen Ende induziert, und einer zweiten Stellung entsprechend dem "Blas"-Strom bewegbar ist, in der Luft vom Flügelrad (8) durch die Luftstromführung in die Leitung (2) abgegeben und von der Führung abgelenkt wird, um zum Betriebsende der Leitung zu strömen.
14. Vorrichtung nach Anspruch 13, bei der die Luftstromführung ein oder mehr Schaufeln (39) aufweist, die von einem verschiebbar in der Leitungswand befestigten Element (33) getragen sind.
15. Vorrichtung nach Anspruch 14, bei der die Luftstromführung die Öffnung (3) in der Seite der Leitung in ihrer ersten Stellung im wesentlichen unblockiert läßt und bei der die Schaufeln (39) der Luftstromführung in der zweiten Stellung der Führung in der Öffnung angeordnet sind.
16. Vorrichtung nach Anspruch 15, bei der in der ersten Stellung ein Teil (31) der Luftstromführung angeordnet ist, um in die Abfalleitung abgegebene Luft zu führen.
17. Vorrichtung nach einem der vorhergehenden Ansprüche, bei der das Flügelrad (8) innerhalb eines Gehäuses (7) angeordnet ist, das mit dem Gehäuse (9) eines Elektromotors (28) zum Antrieb des Flügelrades verbunden ist, wobei die Vorrichtung einen Griff (17) hat, der mit dem Motorgehäuse verbunden ist und einen Schalter (18) zur Betätigung des Motors enthält.
18. Vorrichtung nach einem der Ansprüche 1 bis 16, bei der das Flügelrad (8) angeordnet ist, um Luft durch das Gehäuse (9) eines Elektromotors (28) für den Antrieb des Flügelrades zu saugen.
19. Vorrichtung nach einem der Ansprüche 1 bis 16, bei der das Flügelrad (8) in einem Gehäuse angeordnet ist, das mit Akustikschaum ausgekleidet ist.
EP19840300247 1983-01-18 1984-01-16 Abfallaufsammelgerät Expired EP0114114B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84300247T ATE37280T1 (de) 1983-01-18 1984-01-16 Abfallaufsammelgeraet.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB838301278A GB8301278D0 (en) 1983-01-18 1983-01-18 Apparatus for collecting debris
GB8301278 1983-01-18
GB838305642A GB8305642D0 (en) 1983-03-01 1983-03-01 Apparatus for colecting debris
GB8305642 1983-03-01

Publications (2)

Publication Number Publication Date
EP0114114A1 EP0114114A1 (de) 1984-07-25
EP0114114B1 true EP0114114B1 (de) 1988-09-21

Family

ID=26284939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840300247 Expired EP0114114B1 (de) 1983-01-18 1984-01-16 Abfallaufsammelgerät

Country Status (2)

Country Link
EP (1) EP0114114B1 (de)
DE (1) DE3474104D1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6122826A (ja) * 1984-07-11 1986-01-31 小松ゼノア株式会社 集塵装置
CA1300827C (en) * 1986-12-24 1992-05-19 William T. Arnold Vacuum refuse collector
GB9409909D0 (en) * 1994-05-18 1994-07-06 Black & Decker Inc Blower vacuum
DE29507709U1 (de) * 1995-05-15 1995-07-06 Elektra Beckum Ag, 49716 Meppen Saug-/Blasgerät
US6141823A (en) * 1996-02-21 2000-11-07 Ryobi Limited Blower and vacuum device
ATE533896T1 (de) * 2005-10-07 2011-12-15 Dulevo Int Spa Saugvorrichtung für abfälle oder dergleichen
DE102007036161B4 (de) * 2007-08-02 2019-09-05 BSH Hausgeräte GmbH Saugbürstenvorrichtung für ein Staubsammelgerät, insbesondere für einen Staubsammelroboter, sowie ein eine solche Saugbürstenvorrichtung enthaltendes Staubsammelgerät, insbesondere Staubsammelroboter
WO2009144257A2 (de) * 2008-05-30 2009-12-03 Alfred Kärcher Gmbh & Co. Kg Laubsauger
ITRE20130052A1 (it) * 2013-07-19 2015-01-20 Eurosystems S P A Dispositivo aspiratore e soffiatore

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460327A (en) * 1966-07-11 1969-08-12 Up Right Inc Apparatus for harvesting fruit
GB1331064A (en) * 1970-11-13 1973-09-19 Produktions Materiel Ab Nozzle assemblies
FR2214794B3 (de) * 1973-01-23 1976-11-05 Larsson Ulf
SE7309869L (sv) * 1973-07-13 1975-01-14 Anders Henry Pettersson Anordning vid ett till en tryckluftkella anslutbart kombinerat sug- och blasmunstycke.
JPS5628245U (de) * 1979-08-13 1981-03-17
US4288886A (en) * 1979-08-23 1981-09-15 Frederick Siegler Air broom
DD156568A1 (de) * 1980-12-15 1982-09-08 Herbert Haeske Einrichtung zur optimalen nutzung des blasluftstromes bei handstaubsaugern

Also Published As

Publication number Publication date
DE3474104D1 (en) 1988-10-27
EP0114114A1 (de) 1984-07-25

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