EP0599477A1 - Sammelvorrichtung - Google Patents

Sammelvorrichtung Download PDF

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Publication number
EP0599477A1
EP0599477A1 EP93308364A EP93308364A EP0599477A1 EP 0599477 A1 EP0599477 A1 EP 0599477A1 EP 93308364 A EP93308364 A EP 93308364A EP 93308364 A EP93308364 A EP 93308364A EP 0599477 A1 EP0599477 A1 EP 0599477A1
Authority
EP
European Patent Office
Prior art keywords
duct
air
stream
access port
collection
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.)
Withdrawn
Application number
EP93308364A
Other languages
English (en)
French (fr)
Inventor
John Samuel Davies
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.)
Husqvarna UK Ltd
Original Assignee
Electrolux Outdoor Products Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Outdoor Products Ltd filed Critical Electrolux Outdoor Products Ltd
Publication of EP0599477A1 publication Critical patent/EP0599477A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0863—Apparatus loosening or removing the dirt by blowing and subsequently dislodging it at least partially by suction ; Combined suction and blowing nozzles
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H2001/0881—Details for pneumatically dislodging or removing not related to the mouth-piece
    • E01H2001/089—Suction-effect created through blowing, e.g. using the venturi effect

Definitions

  • This invention relates to an apparatus for collecting material from a surface.
  • vacuum cleaners collection devices which collect material by applying a stream of pressurised air to the material and carrying the material through a duct to a refuse receptacle.
  • the material to be collected may, for example, be paper or leaves from streets, gardens, etc.
  • an apparatus for collecting material from a surface comprises a duct for transporting material entrained in a stream of pressurised air from a collection mouth at an upstream end of the duct to a downstream region of the duct for collection; at least one air inlet opening into the duct for delivering pressurized air to form a primary stream of air directed generally downstream at the duct; and a source for generating the pressurised air and passing the air to the said at least one air inlet, characterised in that the duct includes an access port disposed downstream from the collection mouth and in that the apparatus includes a source for imparting energy to the stream of pressurised air in the duct via the access port thereby increasing the section in the duct.
  • a first pressurised air stream is blown into the duct past a collection mouth. Material is carried into the duct with the pressurised air stream. The pressure in the duct is lowered by use of a secondary air stream applying suction downstream at the collection mouth.
  • the pressure in the duct is reduced by blowing the stream of secondary air into the duct in the downstream direction.
  • Figure 1 shows the collection apparatus according to a first embodiment of the present invention in an operating position relative to a surface S from which material is to be collected.
  • the surface S is drawn obliquely for reasons of clarity only.
  • the apparatus comprises a duct D, a plenum chamber P, a handle member H, a suction pump G and a collection receptacle CB.
  • the suction pump G includes an impeller I and an electric motor M.
  • An inlet opening 1 and a collection mouth CM are positioned at the upstream end of the duct D.
  • An access port 2 and an outlet leading to the collection receptacle CB are positioned in the downstream region DS of the duct D.
  • air is drawn into the suction pump G through pump inlets (not shown) and also through the access port 2. Air under pressure is directed into the plenum chamber P, as indicated by arrow PA. After passing through the inlet opening 1 pressurised air forms the first stream of pressurised air which picks up material disposed in the region of the collection mouth CM, and carries it into the duct D in the direction indicated by arrow DA.
  • the stream of pressurised air is directed to a collection receptacle while a part of the first stream of pressurised air is sucked through the access port 2 into the suction pump G.
  • This separated air stream forms a secondary stream of air which is sucked out of the downstream region DS of the duct D thereby producing a lowered pressure in the duct D.
  • the secondary air stream is sucked into the outlet region of the suction pump G (arrow A1) by the passage of the pressurised air from the suction pump G past the secondary stream of air. Furthermore, the secondary air stream can be urged into an inlet of the suction pump G (arrow A2), by the suction of the impeller I.
  • the stream of pressurised air passes out of the downstream end of the duct and directly into a closed collection receptacle where the collected material is deposited.
  • the cleaned air is then sucked into the suction pump G. This causes a lowering of pressure in the duct, and therefore, increases the suction at the collection mouth of the apparatus.
  • Figure 2 shows an apparatus for collecting material according to a second embodiment of the invention.
  • the common components in Fig. 1 and Fig. 2 are labelled with the same reference signs.
  • a stream of pressurized air carrying the material is directed through the duct D into the collection receptacle CB.
  • a stream of secondary pressurised air is directed from the positive pressure pump G into a portion of the duct D downstream of the collection mouth CM through an access port. This is shown by arrow A3.
  • the secondary stream of pressurised air is directed into the duct D in a substantially downstream direction, thereby urging the primary stream of air in a downstream direction. This results in a decreased pressure in the duct and, therefore, increased suction at the collection mouth CM.
  • the access port may be formed with a lip to deflect a part of the pressurised air through the access port.
  • the stream of secondary pressure air is directed into the collection receptacle CB, but it still has the same effect of lowering the pressure in the duct. This is shown by arrow A4.
  • the pressure pump G comprises one or more impellers which are driven by one or more electric motors
  • the pressurised air is generated in one common chamber or more than one chamber, each chamber separated from the others.
  • the pressurised air is directed to the plenum chamber P.
  • the pressurised air is directed to the access ports 3, 4, respectively.
  • the apparatus may include an access port 2 for directing the secondary stream of air between the duct and the pump and also an access port 4 for passing a stream of secondary air from the pump into the collection receptacle.
  • an access port 2 for directing the secondary stream of air between the duct and the pump
  • an access port 4 for passing a stream of secondary air from the pump into the collection receptacle.
  • the collection apparatus as illustrated is a movable device manually operable by a single person. It is apparent that the device of the present invention can also be used with a remote pump or with a remote collection receptacle.
  • Another embodiment may include a valve disposed within the access port for adjusting the secondary air stream. In some circumstances, it may be desirable for the user to close off the access port altogether.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
EP93308364A 1992-11-23 1993-10-20 Sammelvorrichtung Withdrawn EP0599477A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9224582 1992-11-23
GB929224582A GB9224582D0 (en) 1992-11-23 1992-11-23 Improvements in and relating to collection devices

Publications (1)

Publication Number Publication Date
EP0599477A1 true EP0599477A1 (de) 1994-06-01

Family

ID=10725586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93308364A Withdrawn EP0599477A1 (de) 1992-11-23 1993-10-20 Sammelvorrichtung

Country Status (2)

Country Link
EP (1) EP0599477A1 (de)
GB (1) GB9224582D0 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780519A1 (de) * 1995-12-19 1997-06-25 Electrolux Outdoor Products Limited Sammelvorrichtung
US5673457A (en) * 1995-01-30 1997-10-07 Black & Decker Inc. Debris blower and/or vacuum devices
US5701632A (en) * 1995-09-04 1997-12-30 Black & Decker Inc. Debris blowing apparatus
US5768743A (en) * 1995-02-11 1998-06-23 Black & Decker Inc. Debris collecting apparatus
IT201800009391A1 (it) * 2018-10-12 2020-04-12 Ruffini Andrea Macchina per la pulizia di spiagge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE163308C (de) *
GB1319454A (en) * 1969-10-06 1973-06-06 Bradley Ltd G & E Apparatus for removing particulate rubish
DE2452633A1 (de) * 1974-11-06 1976-05-13 Engelbrecht & Lemmerbrock Maschine zum pneumatischen aufnehmen von laub, papier u.dgl.
FR2541701A1 (fr) * 1983-02-28 1984-08-31 Gorenje Muta Tovarna Poljedels Appareil de nettoyage de surfaces de sol
EP0443882A1 (de) * 1990-02-23 1991-08-28 John Edward Coathupe Sammelvorrichtung
EP0501675A1 (de) * 1991-02-25 1992-09-02 Electrolux Northern Limited Sammelvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE163308C (de) *
GB1319454A (en) * 1969-10-06 1973-06-06 Bradley Ltd G & E Apparatus for removing particulate rubish
DE2452633A1 (de) * 1974-11-06 1976-05-13 Engelbrecht & Lemmerbrock Maschine zum pneumatischen aufnehmen von laub, papier u.dgl.
FR2541701A1 (fr) * 1983-02-28 1984-08-31 Gorenje Muta Tovarna Poljedels Appareil de nettoyage de surfaces de sol
EP0443882A1 (de) * 1990-02-23 1991-08-28 John Edward Coathupe Sammelvorrichtung
EP0501675A1 (de) * 1991-02-25 1992-09-02 Electrolux Northern Limited Sammelvorrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673457A (en) * 1995-01-30 1997-10-07 Black & Decker Inc. Debris blower and/or vacuum devices
US5768743A (en) * 1995-02-11 1998-06-23 Black & Decker Inc. Debris collecting apparatus
US5701632A (en) * 1995-09-04 1997-12-30 Black & Decker Inc. Debris blowing apparatus
EP0780519A1 (de) * 1995-12-19 1997-06-25 Electrolux Outdoor Products Limited Sammelvorrichtung
IT201800009391A1 (it) * 2018-10-12 2020-04-12 Ruffini Andrea Macchina per la pulizia di spiagge

Also Published As

Publication number Publication date
GB9224582D0 (en) 1993-01-13

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