DE102008055045A1 - Vacuum cleaner with centrifugal separators - Google Patents

Abstract

The invention relates to a vacuum cleaner with a first centrifugal separator (1) for separating dust from dust-laden suction air with an air inlet (4) for dust-laden suction air into a separation chamber (5) and an air outlet (7) via a dip tube (14) with the Separating chamber (5) is in communication, wherein through the dip tube (14) coarse-cleaned suction air from the first centrifugal separator (1) and at least one downstream second centrifugal separator (3) for separating fine dust from the coarse-cleaned suction air with an air inlet (10) with an air guide space (9) of the first centrifugal separator (1) is in communication, wherein the first centrifugal separator (1) in the air reversal side of the separation chamber (5) arranged dust outlet (6) through which the separated dust by centrifugal force in one of the Separating chamber (5) separated dust collection container (2) is herausuderbar out. The present invention facilitates with simple and constructive means the realization of an improved vacuum cleaner with a first centrifugal separator (1) for separating coarse dust and downstream smaller centrifugal separators (3) for separating fine dust in such a way that the dust collecting container (2) as large a dust collection capacity has and a very high proportion of the dust particles is eliminated from the suction air.

Description

Background of the invention

The The present invention relates to a vacuum cleaner with centrifugal separators, with a first centrifugal separator for the separation of dust from dust-laden suction air with an air inlet for dust-laden Suction air into a separation chamber and an air outlet that over a dip tube is in communication with the separation chamber, wherein the dip tube coarsely cleaned suction air from the first centrifugal separator outlet and at least one downstream second centrifugal separator for the separation of fine dust from the coarse-cleaned suction with an air intake, with an air duct of the first Centrifugal separator communicates.

State of the art

such So-called bagless vacuum cleaners usually work with a centrifugal separator, the dust and dirt taking advantage of Centrifugal force from a stream of air swirling through a separation chamber separates. The separated dust, located at the bottom of the deposition chamber or the dust collector deposits, can then be removed become. The cleaned of coarse dirt suction air of the vortex flows in the interior of the deposition chamber back up and out of the Vacuum blown. However, such centrifugal separators In general, are also unable to remove the fine dust from the air deposit these vacuum cleaners often downstream fine dust filter on, which are arranged in the region of the air outlet. This fine dust filter However, due to the large amount of often accumulate fine dust very quickly and must be cleaned constantly.

Therefore, it has been proposed, the centrifugal separating the coarse dust and dirt from the sucked air nachscheidet several small cyclones that separate from the coarsely purified air nor the fine dust before the air exits the vacuum cleaner again. An example of this is in the DE 10 2004 028 677 A1 given. Here, the dust-laden suction air passes first into a first separation chamber, in which the coarse dust and dirt from the turbulent air is separated. The debris migrates down the walls of the deposition chamber and accumulates at the bottom of the deposition chamber, while the roughly cleaned air passes back out through a dip tube in the center of the deposition chamber. The outflowing air is divided and led to a large number of small Centrifugal separators, in which the dust-laden suction air is swirled on the same principle. Here, the fine dust is separated from the dust-laden suction air in the small centrifugal separators, which also moves down the walls of the centrifugal and falls into fine dust chambers. The cleaned suction air in turn migrates through a dip tube to the outside and is discharged through an outlet from the vacuum cleaner. A disadvantage of such a construction may be that the small centrifugal separator with their fine dust chambers in the vacuum cleaner take away space that is no longer available as a collecting space for the coarse dirt available. Thus, the collection capacity of the vacuum cleaner can be significantly reduced.

The invention is based task

Of the Invention is based on the object, an improved vacuum cleaner with a centrifugal separator for separating coarse dust and downstream small centrifugal separators for the separation of fine dust in such a way, that the dust collection container as large as possible Has dust collection capacity and a very high proportion of Dust particles from the suction air is excreted.

invention solution

The Solution of the task accomplished by a vacuum cleaner with centrifugal separators having the features of claim 1.

The vacuum cleaner with centrifugal separators according to the invention succeeds in that the first centrifugal separator has a dust outlet arranged laterally in the region of the air reversal through which the separated dust can be centrifuged out by centrifugal force into a dust collecting container separate from the separating chamber. Both cyclone and cyclone separators are to be regarded as centrifugal separators, centrifugal forces acting on the particles in the centrifugal force separator and accelerating them radially outward. Such centrifugal separators are used in particular in so-called bagless vacuum cleaners. The first centrifugal separator separating the coarse dust is constructed such that the separating chamber of the centrifugal separator absorbs only the air vortex separating the dust, but the dust itself is ejected via a dust outlet into a separate dust collecting container. As a result of the separation chamber and the dust collection container being decoupled, the dust collection container can be arranged independently of the deposition process. Its The shape of the dust collector is no longer tied to the air duct of the air vortex. Thus, the dust collector is free in the design options and can be adapted to the spatial conditions of the Vacuum cleaner to be adjusted. The air vortex is limited to the separation space, the dust collector can be designed arbitrarily and is not affected by the air vortex. So that the separated dust passes through centrifugal force immediately from the separation chamber into the dust collection container, the dust outlet for the dust collection container is arranged on the side wall of the separation chamber, preferably in the region of the air reversal of the dust separating vortex. This construction makes it possible for the dust collecting container to be designed in any desired form and thus optimally adapted to the space available in the vacuum cleaner and thereby able to assume the maximum possible collecting capacity.

Preferred embodiment of invention

advantageous Training and further education, which individually or in combination with each other can be used are the subject of the dependent Claims. The reference numerals in the claims have no restrictive effect, but should only improve their readability.

In A preferred embodiment of the invention is the first Centrifugal separator a Wirbelrohrabscheider. Vortex Tube are characterized by the fact that they form a dust deposit cause low pressure loss and large heavy dust particles can be safely separated. Vortex Tube are characterized by a cylindrical, so in the radial direction constant Separating chamber. A dust outlet may be at an air reversal. Advantageously, the first centrifugal separator is a vortex tube separator, because with a small pressure loss sure the big heavy ones Particles can be excreted and only the fine dust in the dust-laden air the downstream centrifugal separator can be provided.

Appropriately Way, the second centrifugal separator is a Cyclonabscheider. Cyclone are characterized by the fact that they are opposite Wirbelrohrabscheidern have improved particulate matter separation can. Cyclone separators are characterized by a conical, so in the radial direction variable separation space. Advantageous the second centrifugal separator is a cyclone separator that is safe the particulate matter precipitates.

Appropriately Way are the centrifugal separator following the first centrifugal separator arranged in parallel. In a parallel arrangement of centrifugal separators becomes the airflow exiting the first centrifugal separator in several uniform, sometimes different Air flows split. Advantageously, the with Particulate matter laden air is divided into several centrifugal separators become. Advantageously, it is achieved that in case of failure from a Cyclonabscheider, about by clogging with a large Dust particles further centrifugal separator for dust separation be available. This can advantageously be a safe Dust removal achieved over the life of the vacuum cleaner become.

In a particularly advantageous embodiment opens its dust outlet of the at least one second downstream centrifugal separator for the fine dust in the dust collector of the first centrifugal separator. First and second centrifugal separator So use the same dust collector. This is special efficient for the dust collection capacity. This common benefit of a dust collector is characterized allows the Staubabscheidewirbel the first centrifugal separator is separated from the dust collector and thus not the also opening into this dust collector can influence downstream centrifugal separator. Advantageous can be achieved by only one movable flap for Dust emptying actuated by a dust collector must be removed and only on an inner wall adhering dust can be eliminated got to.

In a further advantageous embodiment is the second downstream centrifugal separator also with a bottom to Provided air reversal of Abscheidwirirel and has a in the area this air reversal arranged lateral dust outlet, through the separated dust by centrifugal force in a separate from the separation chamber Dust collector is slingshot out. This will causes even the smaller separation vortex of the downstream Centrifugal separator no dust in the dust collector Whirling up what the concept of a common dust collector supported.

In A further advantageous embodiment of the dust collection container removable and has an emptying flap. The dust collector the embodiment of the invention a vacuum cleaner with centrifugal separator can except for the openings, which with the dust outlets of centrifugal separators are closed, be closed. That's why he can easily get the dust collector are removed without the dirt is collected in it is delivered to the environment. For emptying, the substantially closed Container an emptying flap, the first over the garbage can be opened. This can especially beneficial for allergy sufferers, as the operator does not come into contact with any dust.

In a further advantageous embodiment, the Dust collection on partitions to eventual Turbulence of the deposited from the first centrifugal separator coarse dirt and dust through the Abscheidewirbel the downstream Prevent centrifugal separator. The partitions are However, not firmly connected to the ground, so that between through the walls and floor can still pass through get the dust from one area of the tank to the other can if an area is filled faster. Also by it can increase the collection capacity of the dust collector be used optimally. This has an especially advantageous effect off if the dust collector is a flexible floor having. It can be a foil that adhere to Any vacant spaces in the vacuum cleaner can adjust and so maximum dust collection capacity available provides.

In a further advantageous embodiment, this is further developed. The dust collector opens here in a dust collecting film, the first on the dust collector is applied and with increasing filling level of dirt and dust continues to reach into the room, until finally they all fills available collecting space and must be removed and replaced by the operator.

in principle are due to the decoupling of first and possibly also downstream centrifugal separators from the dust collector any useful embodiments of a dust collector conceivable.

The present invention facilitates with simple and constructive Means the realization of an improved vacuum cleaner with a first centrifugal separator for separating coarse dust and downstream smaller centrifugal separators for separation of particulate matter in such a way that the dust collector the largest possible dust collection capacity and a very high proportion of the dust particles excreted from the suction air becomes.

Brief description of the drawings

Further advantageous embodiments are described below with reference to an in the drawing illustrated embodiment, on which the invention is not limited, in more detail described.

It show schematically:

1 A schematic representation of a centrifugal separator system according to the invention with a decoupled dust container,

2 : a schematic representation of a section of a similar embodiment with reference to the air guide is explained; and

3 to 5 : Schematic representations of the principle of a dust collection container with removable dust collecting foil

Detailed description based on an embodiment

at the following description of two preferred embodiments In the present invention, like reference characters designate the same or similar components.

The in the above description, the claims and the Drawings disclosed features can both individually as well as in any combination for the realization the invention in its various embodiments of importance be.

1 shows the basic structure of a Staubabscheidesystems invention with a first centrifugal separator 1 for separating the coarse dirt and dust from the dust sucked by the vacuum cleaner nozzle, a dust collecting container 2 and two smaller centrifugal separators downstream of the first centrifugal separator 3 for the separation of fine dust. The dust-laden air that has been collected by the vacuum cleaner nozzle, passes through a laterally disposed air inlet 4 in the first centrifugal separator and is due to the shape of the air inlet and the separation chamber 5 swirled. The air vortex flows through the separation chamber 5 and separates it due to centrifugal forces, especially in the area of the bottom of the separation chamber 5 Dirt and dust from which due to the centrifugal force to the wall of the separation chamber 5 is pressed from where he goes through the dust outlet 6 in the dust collector 2 is ejected. The air vortex is at the bottom of the separation chamber 5 vice versa and passes over the interior of the separation chamber 5 and the air outlet 7 to the arranged dip tube 14 in the downstream centrifugal separator 3 , The air duct is in the 2 and 3 again shown in detail. In the downstream centrifugal separators 3 The air is again moved in vortices, which are formed by geometry of air inlet and centrifugal separators, down, now the fine dust from the air via centrifugal forces to the side walls of centrifugal separators 3 is deposited. The separated fine dust migrates along the walls of the centrifugal separator 3 down and leaves the downwardly open centrifugal separator 3 and falls into the dust collector 2 into which the centrifugal separators 3 protrude.

2 shows the air flow in the first centrifugal separator 1 again in more detail. The air vortex, which removes the dust and dirt in the separation chamber 5 is deposited on the ground using a Umlenkkegels 8th vice versa and the roughly cleaned air flow is over the dip tube 7 in the air duct 9 led from where they into the air intakes 10 the downstream centrifugal separator 3 arrives. There, the fine dust is separated, which as well as the centrifugal separator 1 deposited coarse dust in the dust collector 2 is thrown. The dust collector 2 is how in 1 and 2 can be seen, designed as a common dust collector for all centrifugal separators. Both the coarse dust from the dust ejection of the first centrifugal separator 1 as well as the fine dust from the centrifugal separators 3 gets into the dust collector 2 ,

As a result of the decoupling of separating space according to the invention 5 and dust collector 2 almost any shape for the dust collector 2 is possible, can be used as a dust collector 2 also variants without fixed container walls, like those in the 3 to 5 implement in the flowchart. Here is a dust collector 2 shown by a dust collecting foil 11 is surrounded in a tubular manner. The dust collecting foil 11 lies on the sliding floor 12 of the dust collector 2 up and up with this floor 12 from the container 2 pushed away as soon as dust settles on the bottom container and thus pressure on the ground 12 exercises. As a result, the dust collects in the dust collecting film 11 and fill them, their volume always increasing until the bottom 12 in the 5 has reached the end position shown. Once this end position of the sliding floor 12 is reached, the dust collecting film from the welding unit 13 welded and separated. The dust collecting foil can now be easily removed with the packed dirt. In particular, it is also possible by the invention, the dust collector 2 Build so that it only has the dust outlet 6 the centrifugal separator merges and then directly into a dust collecting foil 11 like in the 3 to 5 shown, flows.

The present invention facilitates with simple and constructive Means the realization of an improved vacuum cleaner with a first centrifugal separator for separating coarse dust and downstream smaller centrifugal separators for separation of particulate matter in such a way that the dust collector the largest possible dust collection capacity and a very high proportion of the dust particles excreted from the suction air becomes.

1

first cyclone

2

dust collection

3

downstream cyclone

4

air intake (first centrifugal separator)

5

separating chamber

6

Dust outlet

7

air outlet

8th

deflecting cone

9

Air guide space

10

air intake (second centrifugal separator)

11

Dust collecting sheet

12

ground

13

welding unit

14

dip tube

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102004028677 A1 [0003]

Claims (10)

Vacuum cleaner with centrifugal separators, with a first centrifugal separator ( 1 ) for separating dust from dust-laden suction air with an air inlet ( 4 ) for dust-laden suction air into a separation chamber ( 5 ) and an air outlet ( 7 ), which via a dip tube ( 14 ) with the separation chamber ( 5 ), whereby through the dip tube ( 14 ) coarsely cleaned suction air from the first centrifugal separator ( 1 ) and at least one downstream second centrifugal separator ( 3 ) for the separation of fine dust from the coarse-cleaned suction air with an air inlet ( 10 ), which is equipped with an air duct ( 9 ) of the first centrifugal separator ( 1 ), characterized in that the first centrifugal separator ( 1 ) one in the region of the air reversal laterally at the separation chamber ( 5 ) arranged dust outlet ( 6 ) through which the separated dust by centrifugal force in a from the separation chamber ( 5 ) separate dust collection container ( 2 ) is slingshot out. Vacuum cleaner with centrifugal separators according to claim 1, characterized in that at least the first centrifugal separator ( 1 ) is a Wirbelrohrabscheider. Vacuum cleaner with centrifugal separators according to claim 1, characterized in that at least the second centrifugal separator ( 3 ) is a cyclone separator. Vacuum cleaner with centrifugal separators according to one of the preceding claims, characterized in that the first centrifugal separator ( 1 ) following centrifugal separator ( 3 ) are arranged in parallel. Vacuum cleaner with centrifugal separators according to one of the preceding claims, characterized in that a dust outlet ( 6 ) of the at least one second centrifugal separator ( 3 ) in the dust collection container ( 2 ) of the first centrifugal separator ( 1 ) opens. Vacuum cleaner with centrifugal separators according to one of the preceding claims, characterized in that the second centrifugal separator ( 3 ) arranged in the region of the air reversal dust outlet ( 6 ) through which the separated dust by centrifugal force in a from the separation chamber ( 5 ) separate dust collection container ( 2 ) is slingshot out. Vacuum cleaner with centrifugal separators according to claim 5, characterized in that the dust collecting container ( 2 ) is removable and has an emptying flap. Vacuum cleaner with centrifugal separators according to one of the preceding claims, characterized in that the dust collecting container ( 2 ) Has partitions. Vacuum cleaner with centrifugal separators according to claim 1 or 5, characterized in that the dust collecting container ( 2 ) a flexible floor ( 12 ) having. Vacuum cleaner with centrifugal separators according to claim 6, characterized in that the dust collecting container ( 2 ) a dust collecting foil ( 11 ).