JPS62501088A - suction device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] suction device The present invention also relates to a suction device for cleaning according to the generic concept of claim 1. It is.

A suction device of this kind is already known from DE 24 46 728. So The air intake device is formed as a continuation of the floor-parallel suction device in the rearward direction; air between the floor surface and the floor surface. In this case, there are many current losses. This significantly reduces cleaning effectiveness. Relatively large irregularities in the floor cause considerable pressure fluctuations. This also has a negative effect on the cleaning effect. Air conduction to floor surface The closer the input devices are placed, the greater the risk of failure if they run over an obstacle. Moreover, the further away from the floor surface, the smaller the cleaning effect becomes.

Therefore, the object of the present invention is to supply air to the suction device from the back without increasing exhaust efficiency. The objective is to improve the effectiveness of the air flow by reducing fluid engineering waste.

This object is achieved according to the invention by the features of claim 1.

The idea behind this solution is to omit unnecessary fluidic devices and to maintain cleaning efficiency. Additional airflow can be achieved by providing a special nozzle-shaped flow path for the supply air. It is based on the knowledge that this can be achieved simply by tilting the airflow relative to the floor surface. .

When the air volume parallel to the floor is sufficiently reduced, the vacuum at the suction opening of the suction device will cause suction. The injected air is removed at a high flow rate by J'ft through the suction funnel forming the air nozzle. It reaches the desired floor surface, where it exerts an auxiliary effect on the intake air flow of the suction device. child Surprisingly, the device in this video is connected to the venting device via a pressure hose. It is almost comparable to known blowing air nozzles such as.

According to the proposal of the present invention, exactly this fluid engineering waste can be eliminated. ,child For the first time, the present invention reduces this waste by using a special air nozzle arrangement. To achieve sufficient lif removal effect with little fluid loss regardless of the non-uniformity of succeeded in.

The effect of air inflow to the floor surface is determined by the spatial expansion of the suction opening in the suction device. In order to adapt, according to the invention, a slit shape extending transversely to the running direction is provided. An exit aperture is formed in the air nozzle. Air flowing out at high speed is passed to the baffle plate. Similar to flow effects, it is deflected towards the floor surface. By "speech bubble effect".

The captured dust is separated from the floor surface and introduced into the suction opening. It will be done.

Preferably, the suction funnel has a rear wall projecting to the floor surface by rubber-elastic sealing means. Be prepared. This sealing means is preferably provided at a distance of about 10 mm from the floor surface, for example. The dimensions should be such that a small gap is left between the holes so that sufficient vacuum is applied to the incoming air parallel to the floor. I will do it. Inhomogeneities in the floor surface are overcome by this elastically deforming sealing means. be able to.

The effect of the air flow in the primary intake air flow as well as the air nozzle further improves the suction device's Rubber elastic sealing plates with air nozzles extending backwards and downwards on both sides are placed on the floor surface. On the other hand, it can be improved by closing it with a sealed end.

Within the scope of the invention, the suction funnels each have a cross-sectional shape suitable for fluidics. It can be equipped with a device such as an air device on the top to adjust the air flow rate and velocity. A location can be provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described by way of example with reference to the accompanying drawings.

Figure 1 is a vertical cross-sectional view of the suction flow path. FIG. 2 is a sectional view taken along line n-nu in FIG.

Figure 1 follows arrow R] 1 of the vacuum cleaner to be moved with respect to the floor surface 1 in the lifting direction A suction device 2 is shown as a section, and a funnel-shaped air nozzle 3 is provided on the rear surface. air The rear wall 4 of the cusp 3 is extended by rubber-elastic sealing means 5 . Suction device 2 side The front wall 6 of the air nozzle 3 has a U-shaped connection preferably made of rubber material. It is connected to the rear wall portion 7 of the suction device 2 by a member 8 . The suction device 2 has side plates on both sides. 9, which forms a supporting frame for the suction device 2 and the air nozzle 3. each The side plate 9 is connected to the air nozzle 3 by a short connecting stem 10 and other connections It is connected to the suction device 2 via the stem 11. Rubber elastic is provided on the outer surface of each side plate 9. The sealing plate 12 is fixed, thereby disrupting the fluid sealing effect on both sides. rough, side Wheels 13 are supported on the plate 9, which allows the suction device 2 to run relative to the floor surface 1. I support you.

The suction device 2 and the suction hose 14 connected to it suck in the direction of arrow F. The air generated generates a reduced pressure below the suction opening 15, which causes the arrow from the front to bed-parallel feed flow according to P and entering through air nozzle 3 according to arrow B Increase air flow. The latter exits the air nozzle 3 via the outlet aperture 16 Ru. The air flowing out from here collides with the floor surface 1 according to the direction of the arrow and is inhaled. It is deflected in the direction of the aperture 15. At that time, the spiral dust particles are removed from the suction device 2. directly to the back side of the rubber elastic bottom frame 17 protruding from the front wall of the Dust particles are captured from the intake air stream by the suction device 2.

Wheel 13 is not shown in FIG. 1; instead, its axis 18 is marked by a cross. Therefore, it is shown.

Adjustment of the air flow according to arrow B in the air nozzle 3 with respect to air volume and velocity is , can be easily obtained by an air device 19 shown in dotted lines in the drawing installed in the air nozzle 3. Ru. Its status can be adjusted manually or set manually via remote control. You can also

The inflow angle of the air flow in the air nozzle 3 which opens rearward with respect to the floor surface 1 is favorable. or 40 to 70', with the apex of this angle at the rear end of the suction opening 15. Bring it closer.

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Claims (5)

[Claims] 1. An air chamber that applies reduced pressure is placed at the rear of the suction device (2) and communicates the inflow side with the outer surroundings. In a vacuum cleaner suction device comprising an air introduction device, the air introduction device is connected to an air nozzle. formed as a nozzle (3) with an outlet opening (16) directed towards the floor surface (1). A suction device characterized by being provided with a suction funnel that opens upward. 2. The outlet opening (16) of the air nozzle (3) is formed into a slit shape. Claim 1, characterized in that the area extends in the lateral direction with respect to the cleaning direction (R). Suction device as described in section. 3. Rubber elastic sealing means ( 5) according to claim 1 or 2, characterized in that it is made to protrude by Suction device. 4. By means of a rubber elastic sealing plate (12) that terminates in a sealing manner against the floor surface (1). It is characterized by having both sides closed and extending to the rear of the air nozzle (3). A suction device according to claim 1 or 2. 5. Internally installed adjustable air flow volume and speed in air nozzle (3) The suction according to claim 1, characterized in that it is regulated by an air cover (19). Pulling device.