DE2820568A1 - CLEANING HEAD - Google Patents

Description

PATENTANWÄLTE 2ENZ & HELBER D 4300 EGSEN 1 AM RUHRSTEiN 1 TEL .: (02 01) 4126

VAX APPLIANCES LIMITED

Abra House, 168 Worcester Road, Bromsgrove, Hereford & Worcester England

Cleaning head

The invention relates to a cleaning head for a device for cleaning floors, walls, carpets, curtains, Upholstery or the like. and more particularly relates to a cleaning head for use in water extraction cleaning in which a carpet or the like. with a solution containing a suitable detergent such as a non-sudsing detergent vigorously moistened and then dried by suction of the 'solution will.

The cleaning head, which has a suction chamber that can be connected to a suction source and an open mouthpiece, is distinguished according to the invention in that an inner chamber is arranged essentially centrally in the suction chamber, the side walls of which an open mouth in the plane of the mouthpiece opening form that the inner chamber has a cleaning fluid supply line with a plurality of mutually spaced fine Is assigned outlet openings, through the cleaning liquid essentially dropwise at one of the Muzzle spaced point can be introduced into the inner chamber, and that the arrangement is made so that when put on of the cleaning head on a surface to be cleaned

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ORIGINAL INSPECTED

the cleaning liquid on a screened from the suction air flow Part of the surface can be applied and when the cleaning head is moved in one of at least two opposite directions Directions the area moistened with the cleaning liquid is immediately subjected to suction drying.

The end edges of the side walls of the inner chamber are preferably free of local projections or recesses, see above that the end edges touch the surface to be cleaned evenly. The mouthpiece of the suction chamber is also preferred free of local protrusions or recesses, and the End edges of the side walls forming the suction chamber can be slightly rounded in cross section.

The cleaning head preferably has an elongated shape, with the inner chamber extending centrally over the length of the suction chamber extends. In an alternative embodiment, the head can have a round shape and the inner chamber can have a be circular or ring-shaped.

In the following the invention is illustrated by means of a preferred exemplary embodiment with reference to the drawing described. Show in the drawing;

1 shows the cleaning head in a front view cut away from one side;

Fig. 2 is a sectional view taken along line X-X of Fig. 1;

Fig. 3 is a sectional view taken along line Y-Y of Fig. 1; and

4 shows a view of the cleaning head from below.

The cleaning head 100 has a connection sleeve 101 for a suction hose (not shown in the drawing) and a this transverse housing 102 with a transverse rib and a central hollow extension 104 for receiving a nozzle

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105 at the end of line 77. The cleaning liquid is supplied through the line 77. At the bottom of the central Approach 104, an opening 106 is provided, which is connected to a channel running along the underside of the transverse rib 103 107 communicates. Two molded parts 108 are held in the housing 102 in that their ends engage in slots 109, the are formed in the end portions of the housing. "The two molded parts are formed in combination so that they fit with two vertically extending lugs 110 into openings 111 which are in the top wall of the Enclose housing near its end sections. The two molded parts also jointly form a channel 112, which together with the channel 107 a transverse line is defined. Through this transverse line 113 is the Cleaning liquid taken up from the nozzle 105 through the opening 106 is distributed over the entire length of the housing 102.

Calibrated openings 114 are spaced apart along the length of the head and control the Liquid dispensing in such a way that the liquid is uniform and continuous at the intended rate is discharged from the cleaning head. Typically, the calibrated dispensing orifices 114 have one Diameter of 0.4 mm and a center distance of 4 mm. With this training, the liquid drips through the calibrated openings and enters an interior chamber 115 sandwiched between two transverse walls 116 of the molded parts 108 is formed. The inner chamber 115 is centrally located in an outer chamber formed by the housing 102 arranged, and the end surfaces 118 of the walls 116 are arranged so that they are with the by the rounded lip formed outer edges of the housing mouthpiece lie flush in one plane. The rounded lip 119 has a continuous and uninterrupted form so that a The pile treated with the cleaning head is not separated or combed. In this way, the outer chamber 117 is opposed to

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Effectively sealed against the outside atmosphere, so that a strong suction flow on the fabric to be cleaned, the carpet or the like. works. The arrangement of the end faces 118 of the walls 116 in the plane of the mouth of the outer chamber 117 ensures that the interior chamber 115 is similarly effectively sealed on the treated area so that the Liquid from the inner chamber 115, even under the influence of the suction flow effective in the outer chamber 117, does not flow directly into the outer chamber can be pulled over. Instead of this . the liquid drips onto the material to be treated. This results in thorough wetting and moistening of the treated material without spraying. This in turn makes it possible for the device to act on the liquid only with low pressure, so that a pump for feeding the cleaning fluid to the cleaning head is also unnecessary.

A shut-off valve (not shown) can be built into the feed pipe to prevent the flow of cleaning fluid can optionally be interrupted to the cleaning head.

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Claims (6)

PATENTANWÄLTE ZENZ & HELBER · D Λ300 ESSEN 1 ■ AW RUHRSTEIN 1 · TEL .: (02 01) 4126 Page - 1 - V 23 VAX APPLIANCES LIMITED Expectations f 1 Λ cleaning head with a suction chamber that can be connected to a suction source and an open mouthpiece, characterized in that an inner chamber (115) is arranged essentially centrally in the suction chamber (117), the side walls (116) of which have an open mouth (118) in form the plane of the mouthpiece opening (119) that the inner chamber (115) is assigned a cleaning fluid supply line (113) with several, mutually spaced fine outlet openings (114) through which the cleaning fluid essentially drops at a point spaced from the mouth into the inner chamber ( 115) can be introduced, and that the arrangement is such that when the cleaning head (100) is placed on a surface to be cleaned, the cleaning liquid can be applied to a part of the surface that is shielded from the suction air flow and, when the cleaning head (100) is moved, in one of at least two opposite directions which are wetted with the cleaning liquid or the humidified zone is immediately subjected to suction drying. 2. Cleaning head according to claim 1, characterized in that the end edges (118) of the side walls (116) of the inner chamber (115) are free of local protrusions or recesses. 3. cleaning head according to claim 1 or 2, characterized 809847/0837 Z / ko. shows that the housing edges delimiting the mouthpiece opening (119) are free of local protrusions or recesses. 4. Cleaning head according to claim 3, characterized in that the end edges delimiting the mouthpiece opening on the outside (119) of the side walls of the suction chamber (117) have a slightly rounded cross-sectional shape. 5. Cleaning head according to one of claims 1 to 4, characterized in that the suction chamber (117) has an elongated shape and the inner chamber (115) runs centrally over the length of the suction chamber. 6. Cleaning head according to one of claims 1 to 5, characterized in that the suction chamber (117) through an outer housing (102) is bounded by a centrally running inner rib (103) and that the inner chamber (115) by two with the inner rib joined molded parts (108) is limited, which together with the inner rib form a line (113), through which cleaning liquid is distributed to the outlet opening (114). ORIGINAL INSPECTED 809847/0837