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
  • E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
  • E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
  • B08B3/02—Cleaning by the force of jets or sprays
  • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned

Definitions

• the invention relates to a floor cleaning device with a hood-shaped housing that is open towards its underside, closed laterally and on its upper side, and a spray arm that can be rotated about a vertical axis therein and has at least one outlet for a cleaning medium directed toward the open underside of the housing, wherein At least one opening is arranged on the top of the housing, through which air is sucked in from the surroundings into the interior of the housing.
• Openings in the top of the housing allow ambient air to enter the interior of the housing, which is sucked in by the rotational movement of the spray arm and is expelled by the spray arm through the open underside of the housing. This forms an air cushion below the housing, which lifts the housing and keeps it at a distance from the surface to be cleaned.
• This air cushion effect is permanently provided in the known floor cleaning device, since ambient air is always sucked in through the openings in the housing when the spray arm rotates.
• This object is achieved according to the invention in a floor cleaning device of the type described in the opening paragraph in that the openings can be completely or partially closed.
• the user therefore has the possibility, through the different opening of the openings, to adjust the amount of air drawn in during operation as the user wishes, it is also possible to completely close the openings and thereby completely prevent the air from being drawn in. This gives the user the option of dosing or completely switching off the air cushion effect.
• a closure body is mounted on the housing, which can be displaced along the upper side to a greater or lesser extent over the cross section of the openings between an opening position releasing the openings and a closing position closing them.
• the closure body can be arranged on the inside of the top.
• the closure body has at least one opening, which covers at least one opening of the housing in the open position of the closure body and is laterally offset in relation to or in the closed position.
• a plurality of openings are preferably arranged on the upper side of the housing. These can be arranged in groups, between which non-perforated areas remain.
• the openings are distributed around the axis of rotation of the spray arm in the top of the housing, so that when ambient air is sucked in, it is sucked in uniformly over the circumference.
• a particularly advantageous embodiment is one in which it is provided that the closure body rotatably rests on the upper side, in particular the axis of rotation of the closure body can coincide with the axis of rotation of the spray arm.
• closure body extends substantially over the entire top of the housing.
• the closure body is preferably plate-shaped.
• closure body can be displaced between its open position and its closed position by a handling element arranged on the outside of the housing.
• the openings are labyrinthine, so that the path of the ambient air drawn in changes several times in its direction. This can be achieved in particular that no splashes of the cleaning liquid to the outside from the interior of the housing emerge, while on the other hand ambient air can freely enter the interior via this angled flow path.
• the upper side is ribbed so that alternately outwardly and inwardly open grooves lie side by side, and that an opening is provided in the partition between adjacent grooves to form an opening on the upper side.
• These openings are located only in certain areas of the grooves in these partitions, so that there are areas with openings and areas without openings in the top. The areas with openings can be more or less covered by the closure body and thereby closed.
• the spray arm has at least one wing-shaped section which, in the manner of a propeller or fan, sucks in an air stream from the environment through the openings on the top and releases it again through the open underside of the housing.
• the spray arm can in particular have two wing-shaped sections diametrically opposite on both sides of the axis of rotation.
• Figure 1 is a sectional view of a floor cleaning device with the housing open at the bottom and a spray arm rotatably mounted therein;
• Figure 2 is a plan view of the floor cleaning device of Figure 1 in the direction of arrow A;
• Figure 3 is a sectional view taken along line 3-3 in Figure 1;
• Figure 4 is a sectional view taken along line 4-4 in Figure 2;
• Figure 5 an enlarged detail view of area B in Figure 1 with adjacent, separate grooves in the top of the housing and
• FIG. 6 a view similar to FIG. 5 with grooves connected to one another by openings in the upper side of the housing in order to form openings for sucking in ambient air.
• the floor cleaning device 1 shown in the drawing comprises a hood-shaped or bell-shaped housing 2, which is circular in cross-section, with a circumferential, closed side wall 3, an open underside 4 and a closed, slightly upwardly curved upper side 5 surrounded by a brush wreath, not shown in the drawing be, which closes the interior at the lower end of the side wall 3 to the environment.
• a liquid jet discharged through the outlet nozzle 11 is directed through the open underside 4 of the housing 2 against a surface to be cleaned, onto which the floor cleaning device 1 is placed.
• the spray arms 10 could theoretically be connected in a rotationally fixed manner to the bearing shaft 8, which then rotates with the spray arms 10, but it is also possible to hold the bearing shaft 8 in a rotationally fixed manner in the bearing bore 7 and to rotate the spray arms 10 in a suitable manner on the bearing shaft 8 to store. In both cases, the bearing shaft 8 can also be adjustable in height, but this is not explained in more detail.
• the cleaning liquid is supplied via a feed pipe 12 which opens radially into the bearing bore 7 and which is connected to an annular space 13 which surrounds a radially recessed section 14 of the bearing shaft 8. This annular space 13 is sealed by seals 15 at both opposite ends relative to the inner wall of the bearing bore 7 and is connected via a radial bore 16 to an inner bore 17, which in turn is connected to the outlet nozzles 11 via longitudinal bores 18 in the spray arms 10.
• the top 5 of the housing 2 is ribbed and thus has a plurality of mutually parallel, immediately adjacent, alternately outwardly and inwardly open grooves 19 which are parallel to the feed pipe 12 and are rectilinear ( Figure 2). These grooves 19 are separated from one another by partitions 20, which each form the side faces of the grooves 19.
• openings 22 are provided in the partition walls 20, each of which connects an outwardly facing groove 19 and the adjacent inwardly facing groove 19 and thus forms a flow path through which ambient air can reach the interior 9 of the housing 2 ( Figure 6).
• Such openings 22 are missing in other partial areas 23 of the upper side 5, so in these partial areas 23 the partition walls 20 completely separate adjacent grooves 19 from one another, so that in these partial areas 23 there are no flow paths which allow the suction of ambient air (FIG. 5).
• the sections 21 and 23 are each formed by adjacent circular sectors which extend between the bearing bush 6 on the one hand and the side wall 3 on the other and which alternate with one another, the opening angle of such a sector-shaped section is 30 ° in the exemplary embodiment shown.
• a locking plate 25 is rotatably mounted on a bearing ring 24 concentrically surrounding the bearing bush 6, optionally formed in one piece with the bearing bush 6, which bears tightly against the inner wall of the upper side 5 and covers it practically completely.
• this closure plate 25 there are sector-shaped cutouts 26 with an opening angle which corresponds to the opening angle of the partial areas 21 and 23; these cutouts 26 are separated from one another by closed partial areas 27 which also extend over an opening angle of approximately 30 °.
• the spray arms 10 carry wing-shaped widenings 30 which, when the spray arms rotate in the manner of a propeller or fan, produce an air flow which directs ambient air into the interior 9 through the openings 22 through the openings 22 and then this ambient air through the open underside 4 of the Releases housing 2 again. This forms an air cushion in the area of the interior 9, through which the floor cleaning device 1 is kept at a distance from the surface to be cleaned.
• This air inflow can be controlled in that the closure plate 25 is brought into different angular positions by means of the pin 28, in which it covers the open partial areas 21 more or less and thereby changes the inflow cross-sections available for the air flow.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Nozzles For Electric Vacuum Cleaners (AREA)
• Cleaning In General (AREA)
• Cleaning By Liquid Or Steam (AREA)
• Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
• Pinball Game Machines (AREA)
• Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

Country Status (6)

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Family Cites Families (6)

• 2002
  • 2002-02-14 DE DE10206014A patent/DE10206014A1/de not_active Withdrawn
  • 2002-06-07 AU AU2002325231A patent/AU2002325231A1/en not_active Abandoned
  • 2002-06-07 DE DE50206344T patent/DE50206344D1/de not_active Expired - Lifetime
  • 2002-06-07 WO PCT/EP2002/006248 patent/WO2003068045A1/fr not_active Application Discontinuation
  • 2002-06-07 ES ES02758220T patent/ES2261710T3/es not_active Expired - Lifetime
  • 2002-06-07 EP EP02758220A patent/EP1474029B1/fr not_active Expired - Lifetime
  • 2002-06-07 AT AT02758220T patent/ATE322214T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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