CN101316541B - Vacuum cleaner comprising a cyclone dust collector - Google Patents

Abstract

The invention relates to a vacuum cleaner with a centrifugal separator (1) having an air inlet (7) connected to a suction pipe (9) for sucking in dusty air, a separation chamber (10) and an air outlet (5), the air that produces the rotating movement in this separation chamber makes the dust deposit to the dust collection area of the separation chamber (10) by centrifugal force or discharges to a desirable place isolated from the separation chamber (10) through a dust discharge port (14). The air outlet (5) communicates with the separation chamber (10) through the submerged pipe (6) and discharges the purified air into the atmosphere. According to the invention, the air inlet (7) is arranged axially oriented on the centrifugal separator (1).

Description

Vacuum cleaner with centrifugal separator

technical field

The invention relates to a vacuum cleaner with a centrifugal separator according to the preamble of claim 1 .

Background technique

This type of vacuum cleaner can be known from many patent applications. The components of this type of vacuum cleaner mainly include one or more suction nozzles; Depending on the construction of floor, hand-held or upright vacuum cleaners: one or more centrifugal separators; a dust collection container, which can be an integral part of one or more centrifugal separators or as a separate dust collection container ; a negative pressure chamber through which the air from the fan is sucked in; and, if necessary, a fine dust filter for final cleaning of the air to be discharged.

DE 100 21 594 A1 proposes this type of vacuum cleaner. The vacuum cleaner described in this document mainly includes the general parts of a conventional floor vacuum cleaner. Replace the dust bag with a dust box, the dust chamber is composed of a centrifugal separator including a submerged pipe, a dust chamber and a filter, this kind of vacuum cleaner is evolved from the conventional dust bag vacuum cleaner , so that research and development costs can be saved, that is, all available parts of conventional vacuum cleaners can also continue to be used in this solution without dust bags, which is very popular. Therefore DE 100 21 594 A1 proposes simply to insert the dust box instead of the hitherto dust bag into a conventional vacuum cleaner, so that this well-known housing can be used, but the disadvantage is that, due to the space taken up by the centrifugal separator, it can be used The dust collection space for dust collection is significantly reduced.

Therefore, the dust collector with centrifugal separator developed by DE 102005047075 is to install the centrifugal separator directly on the dust collection chamber. Since the centrifugal separator is arranged outside the casing, the restriction of the dust collection container due to the additional need for the centrifugal separator is avoided. GB 2 402 047 A describes another vacuum cleaner of similar structure, but this vacuum cleaner collects the separated dust directly in the separation chamber body and removes it together with the entire centrifugal separator for emptying.

All vacuum cleaners of this type have the problem that dirt can adhere especially in the area of the connecting lines to and from the centrifugal separator; especially wet dust with long hairs often causes difficulties there. The resulting clogging can lead to a power loss of the vacuum cleaner and, in extreme cases, even to a breakdown.

Contents of the invention

It is therefore the object of the invention to provide a vacuum cleaner with a centrifugal separator which at least reduces the risk of clogging.

This object is achieved according to the invention by a vacuum cleaner with a centrifugal separator having the features of claim 1 .

The centrifugal separator of the vacuum cleaner according to the invention has an axial inlet for dust-laden air. In this way, the air inlet and the suction pipe connected thereto lie in the same direction as the centrifugal separator itself. So a smooth smooth transition is formed between all these components. This transition does not provide a basis for the adhesion of dirt, so due to the arrangement of the invention, clogging of this area is substantially avoided. In the case of a conventional vacuum cleaner with a centrifugal separator, the air inlets of the centrifugal separator are generally arranged radially, so the suction pipe and the air inlet are vertically located on the centrifugal separator. A 90° air deflection is thus required in the connection region of the suction pipe and the separator. This situation creates eddy currents which cause dirt to stick to the connection corners of these connections. The above-mentioned undesired situation is avoided by the inventive straight line of the connection and the fact that the deflection of the air occurs only in the centrifugal separator body which has no connection corners. A further advantage of the invention is that the air inlet of the centrifugal separator connected to the suction pipe and the suction pipe itself fit freely into the dust collector housing with the axial arrangement of the centrifugal separator. This is a structural advantage and also makes the vacuum cleaner easier to handle, since there are no more obstructive pipes protruding into the space. Such protruding pipes often lead to the vacuum cleaner being stuck on low stands or the like in the case of conventional vacuum cleaners, beneath which the vacuum cleaner has to vacuum.

In an advantageous embodiment, the sucked-in air is deflected at a helical air deflector arranged inside the centrifugal separator and thus induces a vortex motion oriented radially relative to the centrifugal separator. According to the invention, the deflection of the air no longer takes place in the connection area of the suction pipe, but in the body of the centrifugal separator, where the deflection device is designed so that there are no corners on which dirt can adhere. This is achieved by the fact that the connection between the centrifugal separator and the suction pipe and the air deflection are spatially separable from each other due to the axial inlet.

The air turning device is preferably designed in the shape of an Archimedes spiral. In this way, the axially inflowing air can transition particularly smoothly into the radial vortex.

In another advantageous embodiment, the submerged pipe for discharging the purified air is bent. This ensures that the air outlet openings are offset laterally from the center of the centrifugal separator, so that there is sufficient space in the center of the centrifugal separator to make the air deflection device arranged in the centrifugal separator sufficiently large.

In yet another advantageous embodiment, the gas inlet and the gas outlet arranged at the same end of the centrifugal separator run partly in parallel, in particular they run parallel in the region of the connection to the centrifugal separator, so that in this The rectilinear configuration of the centrifugal separator and of the air-conducting connections is also generally maintained, which leads to the structural and operational advantages already mentioned.

The submerged tube and the air deflector are preferably integrally formed within the centrifugal separator by means of an airtight partition wall. In this way, the submerged tube can be used as part of the air diversion. Furthermore, such a monolithic structure is easy to manufacture, especially when injection molding is used, so that the production costs of the centrifugal separator are reduced.

Further details and advantages of the invention can be obtained from the dependent claims, which are described in detail below with reference to the embodiments shown in the drawings.

Description of drawings

The cross section of Fig. 1 centrifugal separator of the present invention;

Figure 2 Schematic top view of the centrifugal separator in the air inlet area.

Detailed ways

FIG. 1 shows a sectional view of a centrifugal separator 1 according to the present invention, which is connected via a connecting hose 2 to a hose connector 3 of a vacuum cleaner not shown in the figure. The centrifugal separator 1 is mounted rotatably about a pivot point 4, so that it can be swiveled away from the vacuum cleaner in order to remove a separate dust box located beneath it in the vacuum cleaner. The air outlet region 5 of the connection hose 2 flows into the submerged pipe 6 of the centrifugal separator 1 . The air inlet area 7 of the centrifugal separator 1 is located next to the air outlet area 5 and is separated from it in a gas-tight manner. This air inlet region is arranged parallel to the air outlet opening 5 in the region of the connecting pipe 8 of the suction pipe 9 . In this way, the axially inward air can flow into the centrifugal separator 1 through the air inlet 7 . The immersion tube 6 is bent so that there is sufficient space for the air inlet 7 and for generating a split vortex thereon. In this way, the gas outlet 5 of the submerged tube 6 can flow into the outer wall region of the vortex tube 10 of the centrifugal separator 1 . At the end of the vortex tube 10 opposite the air inlet 7 and the air outlet 5 of the centrifugal separator 1 , a top cone 12 extending into the centrifugal separator 1 is formed on a detachably fixed cover 11 . On this top cone, the air vortex flowing from the air inlet 7 through the vortex tube 10 to the opposite end is deflected in the direction of the submerged tube 6 and flows into the interior of the centrifugal separator 1 . The air vortex deflected by the dip tube 6 flows via the air outlet 5 to a not shown vacuum cleaner. In the air deflection area 13 , a dirt outlet 14 is arranged on the side wall of the vortex tube 10 , which is formed as a hole in the vortex tube 10 . The dust separated from the vortex air by centrifugal force is discharged via this dirt outlet into a separate dust collection container (not shown). Since the air inlet 7 is arranged axially, the suction pipe 9 connected to the centrifugal separator 1 via the connecting pipe 8 enters the centrifugal separator 1 in a straight line. In this way, the incoming air can flow in a straight line past the corners inevitably produced by the connection between the suction pipe and the separator, so that it is impossible to attach larger dust particles entrained with the air. The vortices which are produced by the deflection of the air and which can cause clogging when passing through these corners are only produced within the no longer corners of the vortex tube 10 . There, the air below the air inlet 7 is deflected by means of an Archimedes turbine 15 , shown schematically in FIG. 2 .

FIG. 2 shows a top view of the centrifugal separator 1 of the present invention with the air inlet 7 and the air outlet 5 opened. Partially visible within the centrifugal separator is the helical air deflector, which is designed as an Archimedes turbine 15 in the air inlet region 7 in the figure. This device forms part of the bent immersion tube 6 and is preferably produced in one piece with the immersion tube 6 as an injection-molded part.

reference sign

1 centrifugal separator

2 connecting hose

3 hose connectors

4 turning points

5 Air outlet area

6 diving tube

7 Air inlet area

8 connecting pipe

9 straws

10 vortex tube

11 cover

12 top cone

13 Turning area

14 Dirt outlet

15 Archimedes Turbine

Claims (6)

1. Vacuum cleaner with a centrifugal separator (1) having an air inlet (7) connected to a suction tube (9) for sucking in dusty air, a separation chamber (10) and an air outlet (5 ), the air that generates rotational movement in the separation chamber makes the dust deposit into the dust collection area of the separation chamber (10) by centrifugal force or discharges to a separate, isolated from the separation chamber (10) through a dust discharge port (14) In the dust collection container that can be removed, the air outlet (5) communicates with the separation chamber (10) through the submerged pipe (6) and discharges the purified air into the atmosphere, wherein the air inlet (7) is axially oriented Arranged on the centrifugal separator (1), it is characterized in that the air inlet (7) and the air outlet (5) are located at the same end of the centrifugal separator (1), wherein the air inlet (7) and the air outlet (5 ) run parallel in the area connected to the centrifugal separator. 2. The vacuum cleaner with centrifugal separator (1) according to claim 1, characterized in that the air inlet (7) has a helical air deflection (15). 3. The vacuum cleaner with centrifugal separator (1) according to claim 2, characterized in that the air deflection device (15) is designed as an Archimedes screw. 4. The vacuum cleaner with centrifugal separator (1) according to claim 1, characterized in that the immersion pipe (6) is bent. 5. The vacuum cleaner with centrifugal separator 1 according to claim 1, characterized in that the air outlet (5) and the air inlet (7) run at least partially in parallel. 6. The vacuum cleaner with centrifugal separator 1 according to claim 2, characterized in that the submerged pipe (6) and the air deflection device (15) are connected in an airtight isolation from each other.

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