EP3692884A1 - Vacuum container and manual cyclone vacuum cleaner - Google Patents

Abstract

The invention relates to a suction material container (1) for a hand-held cyclone vacuum cleaner, having a housing (17), a central filter (2) which is arranged in the housing (17), and a fine filter (4) which is located in the central filter ( 2) is arranged and which is designed such that it remains in the housing (17) when the central filter (2) is removed from the housing (17). The invention also relates to a hand-held cyclone vacuum cleaner which has the suction material container (1).

Description

The invention relates to a suction material container and a hand-held cyclone vacuum cleaner. In particular, the invention relates to a suction material container for a hand-held cyclone vacuum cleaner and the hand-held cyclone vacuum cleaner which has such a suction material container. For the sake of simplicity, the hand-held cyclone vacuum cleaner will also be referred to below as a vacuum cleaner.

The term "cyclone vacuum cleaner" is to be understood as meaning a vacuum cleaner which is bagless and in which eddies and possible turbulences are generated in an air flow entering the vacuum cleaner, whereby the suction material, e.g. Dust particles are pushed and deposited in a predetermined direction due to centrifugal force. The expression "bagless" means that the suction material in the vacuum cleaner is collected directly in the suction material container without a bag or similar replaceable filter medium for receiving suction material being arranged in it, so that the user has to empty the suction material from the suction material container does not remove a bag or the like from the suction material container. Rather, the suction material is emptied directly from the suction material container.

With a cyclone vacuum cleaner, it is necessary to connect a filter after the cyclone so that a drive unit, which is designed to generate a suction air flow, is not damaged. For this purpose, a prior art that has not been documented in printed literature provides a filter system comprising several filters which provides suction power and at the same time dust filtration. The filter system has, in particular, a central filter with a storage medium for storing coarse dust and a fine filter for filtering fine dust, which is designed to protect the drive unit from fine dust, as this can damage the drive unit. Due to the different requirements on the filter materials, these are different and also need to be cleaned differently. With a filter system in which the two filters are firmly connected, the efficiency of the incorrectly cleaned filter decreases and the load on the drive unit increases. In the case of a filter system with filters that can be separated by the user, the filter system is removed as a whole and then the filters are separated from the user. There is still a risk of incorrect cleaning. In addition, in order to separate the two filters, the user has to touch the dirty filter. There is therefore still a need for a suction material container with an improved filter system.

The invention thus raises the problem of providing a suction material container and a cyclone vacuum cleaner which have an improved filter system.

According to the invention, this problem is solved by a suction material container with the features of claim 1 and a hand-held cyclone vacuum cleaner with the features of claim 9. Advantageous refinements and developments of the invention emerge from the following subclaims.

The advantages that can be achieved with the invention consist, in addition to an improved utilization of the performance of the individual filters of the filter system, in an optimized handling by the user. The user does not have to touch any dirty parts to clean the filter, as he does not have to actively and consciously dismantle the filter system. Rather, an automated separation of the central filter from the fine filter is provided. In addition, the risk of the individual filter being cleaned incorrectly is further reduced. In addition, the fact that the fine filter remains in the suction material container ensures that no dust and the like fall into a suction area of the drive unit when the central filter is removed. This can increase the service life of the vacuum cleaner.

• ein Gehäuse,
• einen Zentralfilter, der in dem Gehäuse angeordnet ist,
• einen Feinfilter, der in dem Zentralfilter angeordnet ist und der derart ausgebildet ist, dass er bei Entnahme des Zentralfilters aus dem Gehäuse in dem Gehäuse verbleibt.

The invention relates to a suction material container for a hand-held cyclone vacuum cleaner, having

• a housing,
• a central filter, which is arranged in the housing,
• a fine filter which is arranged in the central filter and which is designed such that it remains in the housing when the central filter is removed from the housing.

The central filter is used in particular to store dust. It is preferably designed as a depth filter. The fine filter serves in particular as protection for the drive unit of the vacuum cleaner. The central filter must therefore be cleaned more often than the fine filter. Due to the separation of the central filter from the fine filter provided when the central filter is removed, the user does not have to carry out a handling step of deliberate separation. In addition, particles that fall from the central filter when it is removed, filter cakes on a surface of the central filter, dust and the like cannot fall into the suction area of the drive unit or collect in airways in front of it and fall into the drive unit of the vacuum cleaner during operation contains the suction material container. This increases the life of the vacuum cleaner.

The suction material container is designed such that it can be connected to a device body in such a way that the drive unit, for example in the form of a fan and / or a Motor is arranged that the fine filter is arranged in the flow direction of a suction air flow generated by the drive unit in front of the drive unit and the central filter is arranged in the flow direction of the suction air flow generated by the drive unit upstream of the fine filter, so that the suction air flow first the central filter, then the fine filter and then flows through a space of the device body accommodating the drive unit. This provides a four-stage filter system in which the cyclone produced first acts as the first filter stage, the pre-filter acts as the second filter stage, the central filter acts as the third filter stage and the fine filter acts as the fourth filter stage. The suction area of the drive unit is arranged downstream of the air flow behind the fine filter and behind the central filter.

In a preferred embodiment, the central filter has a handle which is designed such that the central filter is removed from the housing by pulling the handle out of the housing. The handle is preferably formed at one end of the central filter which is arranged opposite a further end of the central filter, which is arranged adjacent to the suction area of the drive unit when the suction material container is connected to the device body. This ensures that the handle is not arranged in a suction material collecting area of the suction material container and is therefore not or at least only slightly soiled.

The suction material container preferably also has a prefilter, which is arranged in the housing and in which the central filter is arranged. The prefilter is preferably arranged concentrically in the housing of the suction material container. The prefilter is preferably arranged concentrically surrounding the central filter, and the central filter is preferably arranged concentrically surrounding the fine filter. The pre-filter serves in particular as a filter protection for the central filter and the fine filter. The pre-filter is located upstream of the central filter. Only suction material that has not settled on the pre-filter, such as dust, is deposited on the central filter or fine filter. A four-stage filter system is thus provided in which the cyclone generated by the drive unit serves as the first filter stage, the pre-filter serves as the second filter stage, the central filter serves as the third filter stage and the fine filter serves as the fourth filter stage.

The fine filter is preferably releasably connected to the prefilter. The fine filter and the prefilter are preferably designed in such a way that the fine filter can be detached from the prefilter by a rotary movement. The fine filter and the pre-filter are preferably connected via a bayonet connection. The fine filter preferably has one or more latching elements which are designed to latch with one or more corresponding counterparts of the prefilter in such a way that the fine filter remains in the housing when the central filter is removed from the housing, but by releasing the bayonet connection the Pre-filter can be removed from the housing. As a result, the fine filter is designed to be removable from the housing if necessary, so that it can be cleaned if necessary. For example, the fine filter has three locking elements and the prefilter has correspondingly designed counterparts. The locking elements ensure that the fine filter remains in the housing when the central filter is removed by the user. To clean the fine filter, the user must therefore actively and consciously remove the fine filter by loosening the bayonet connection. The locking element or elements of the fine filter are preferably designed in such a way that they lock with corresponding counterparts of the prefilter and can only be detached from the prefilter by rotating the fine filter by a predetermined ° value, and thus the fine filter from the prefilter and the surrounding filter Housing is removable. Preferably the predetermined ° value is in the range from 40 to 80 °, more preferably 50 to 70 °.

In a preferred embodiment, the fine filter and the central filter are releasably connected. The fine filter preferably has a guide dome at one end and the central filter has a receiving area which is designed to receive the guide dome. On the one hand, the connection is easily detachable if the central filter is removed from the housing and the fine filter remains in the housing. On the other hand, the fine filter and the central filter can easily be connected to one another if they are to be integrated into the housing, for example during initial assembly, after purchasing a central filter or after cleaning the fine filter. This means that the central filter and the fine filter can be inserted as a unit. The filter holder of the central filter preferably has a positioning element which is designed such that the fine filter is aligned with the filter holder via the guide dome. The positioning element is preferably designed in the form of positioning ribs which are designed like a roof at one end so that the fine filter rotates into a predetermined position when it is inserted into the central filter.

The fine filter preferably has a gripping area which lies outside the dirt area in which dirt accumulates during operation when the suction material container is arranged in a vacuum cleaner. This allows the user to take out the fine filter in an area that is not soiled. The gripping area of the fine filter is preferably arranged at an end of the fine filter which is opposite an end which is arranged adjacent to a suction area of the drive unit when the suction material container is integrated into the vacuum cleaner. This ensures that the gripping area is not arranged in the suction material collecting area of the suction material container.

The fine filter preferably has a plastic body which is provided with a filter medium. The filter medium of the fine filter is preferably an electrostatic material for example an electrically charged polyester fleece. The fine filter preferably has an electret. The fine filter is preferably designed in such a way that it cannot be washed. The fine filter is preferably designed in such a way that it can be knocked out for cleaning. The filter medium is preferably welded onto the plastic body. The central filter preferably has a storage medium which is designed to store dust. It is preferably designed as a depth filter. The central filter is preferably designed in such a way that it is washable. The prefilter is preferably designed as a foam, knitted and / or knitted filter.

In a preferred embodiment, the central filter has a foam seal which is molded onto the storage medium. The fine filter preferably has an inner dome with a cone which is designed to produce a sealing effect with the foam seal and a connection piece of the prefilter. This ensures that the central filter and the fine filter are designed to be leakproof. The foam seal keeps the storage medium in shape and creates a sealing point. The cone continues to seal against the foam seal. The cone is preferably designed in such a way that it forms a corresponding cone on an inside which seals against the connector of the prefilter. The connector of the prefilter preferably extends in the direction of the device body to be connected to the suction material container, preferably towards its suction area. A force for releasing the foam seal from the inner dome is preferably less than a latching force of the latching element or elements between the fine filter and the prefilter. In an assembled state, a force acting from the foam seal on the cone of the inner dome provides an additional sealing effect on the connection piece of the prefilter.

The central filter preferably has a position geometry and the pre-filter has a further position geometry, the position geometry and the further position geometry being designed in such a way that the bayonet connection of the fine filter and the pre-filter is aligned when the central filter connected to the fine filter is inserted into the housing. The position geometry of the central filter is designed as a counterpart to the further position geometry of the prefilter. By coding the position geometries, the locking element or elements of the fine filter are always aligned to match the counterpart (s) of the pre-filter. Preferably, the position geometry and the further position geometry are each formed at one end of the central or prefilter that is opposite the end that is arranged adjacent to the device body when the suction material container is connected to the device body.

A distance between the pre-filter and the central filter and a further distance between the central filter and the fine filter are preferably made as large as possible. This ensures that the filter surface of the central filter is not reduced by the prefilter and the filter surface of the fine filter is not reduced by the central filter.

The invention also relates to a hand-held cyclone vacuum cleaner which has the suction material container according to one or more of the embodiments described above.

The expression “hand-held” means that the vacuum cleaner is operated by hand by the user. For this purpose, the vacuum cleaner preferably also has a handle which can be connected to the suction material container and which is connected to it during operation.

The vacuum cleaner is preferably a cordless vacuum cleaner. That is, the vacuum cleaner has an accumulator and is designed to be operated by means of the accumulator as a power source. The accumulator can be connected to the suction material container and / or the device body, preferably the device body.

In a preferred embodiment, the vacuum cleaner also has a device body with a drive unit which is designed to generate an air flow through the suction material container during operation, a suction area of the drive unit being arranged downstream of the air flow to the central filter.

Fig. 1

eine Querschnittsansicht eines erfindungsgemäßen Sauggutbehälters;

Fig. 2

eine Querschnittsansicht des in Fig. 1 gezeigten Sauggutbehälters mit entnommenem Zentralfilter;

Fig. 3

eine Querschnittsansicht des in Fig. 2 gezeigten Sauggutbehälters mit entnommenem Feinfilter;

Fig. 4

eine Querschnittsansicht des in Fig. 3 gezeigten Sauggutbehälters mit einsatzbereitem Zentralfilter samt Feinfilter;

Fig. 5

eine Draufsicht auf den in Fig. 2 gezeigten Zentralfilter;

Fig. 6

eine weitere Draufsicht auf den in Fig. 2 gezeigten Zentralfilter;

Fig. 7

eine Draufsicht auf den in Fig. 3 gezeigten Feinfilter;

Fig. 8

eine Teil-Querschnittsansicht des in Fig. 1 gezeigten Vorfilters samt Zentralfilter und Feinfilter;

Fig. 9

eine weitere Draufsicht auf den in Fig. 4 gezeigten Zentralfilter samt Feinfilter;

Fig. 10

eine Draufsicht auf den in Fig. 1 gezeigten Sauggutbehälter; und

Fig. 11

eine perspektivische Teil-Ansicht eines erfindungsgemäßen Staubsaugers.

An embodiment of the invention is shown purely schematically in the drawings and is described in more detail below. It shows schematically and not to scale

Fig. 1

a cross-sectional view of a suction material container according to the invention;

Fig. 2

a cross-sectional view of the in Fig. 1 suction material container shown with removed central filter;

Fig. 3

a cross-sectional view of the in Fig. 2 suction material container shown with fine filter removed;

Fig. 4

a cross-sectional view of the in Fig. 3 suction material container shown with ready-to-use central filter including fine filter;

Fig. 5

a top view of the in Fig. 2 shown central filter;

Fig. 6

another top view of the in Fig. 2 shown central filter;

Fig. 7

a top view of the in Fig. 3 fine filter shown;

Fig. 8

a partial cross-sectional view of the in Fig. 1 shown pre-filter including central filter and fine filter;

Fig. 9

another top view of the in Fig. 4 shown central filter including fine filter;

Fig. 10

a top view of the in Fig. 1 suction material container shown; and

Fig. 11

a perspective partial view of a vacuum cleaner according to the invention.

Fig. 1 shows a cross-sectional view of a suction material container according to the invention. The suction material container 1 has a housing 17, a central filter 2 which is arranged concentrically in the housing 17, and a fine filter 4 which is arranged in the central filter 2. The fine filter 4 has a guide dome 11 which is inserted into the central filter 2. Furthermore, the fine filter 4 has three latching elements 7, one of which is shown and which are latched with corresponding counterparts (not shown) of the prefilter 5, so that they are connected to one another via a bayonet connection.

The central filter 2 has a handle 3 by means of which it can be removed from the housing 17. The central filter 2 also has a storage medium 6 which is designed to store dust. The central filter 2 also has a foam seal 14 which is molded onto the storage medium 6. The fine filter 4 is designed as a plastic body which is provided with a filter medium 18. In the housing 17, a prefilter 5 is also arranged concentrically, in which the central filter 2 is arranged concentrically. The prefilter 5 has a connector 12 which can be connected to a device body (not shown) of a vacuum cleaner in which a drive unit (not shown) is arranged. The suction material container 1 has a suction area 8.

When the suction material container 1 is arranged in a vacuum cleaner (not shown), it is connected to a device body (not shown) in which a drive unit (not shown) is arranged. When the vacuum cleaner is in operation, the drive unit is protected from suction material such as dirt by a four-stage filter system of the suction material container. After generating a suction flow by means of the drive unit, the cyclone generated by the drive unit serves as the first filter stage, the pre-filter as the second filter stage, the central filter as the third filter stage and the fine filter as the fourth filter stage, since the suction flow passes through the filter stages in the specified order and then through the suction material container 1 leaves through the suction area 8 and enters the device body.

Fig. 2 FIG. 10 shows a cross-sectional view of the FIG Fig. 1 suction material container shown with removed central filter. The central filter 2 is removed from the housing 17 by pulling on the handle 3. The fine filter 4 is connected to the prefilter 5 via the latching element 7 and the corresponding counterpart of the prefilter 7 in such a way that it remains in the housing 17 when the central filter 2 is removed from the housing 17.

Fig. 3 FIG. 10 shows a cross-sectional view of the FIG Fig. 2 suction material container shown with the fine filter removed. The fine filter 4 is detachably connected to the prefilter 5 and can be removed from this and thus from the housing 17. The connection between the locking element 7 and the corresponding counterpart 22 of the prefilter 5 can be released by means of a rotary movement and has been released in this view.

Fig. 4 FIG. 10 shows a cross-sectional view of the FIG Fig. 3 suction material container shown with ready-to-use central filter including fine filter. The fine filter 4 is connected to the central filter 2 by means of its guide dome 11, so that the fine filter 4 can be inserted into the pre-filter 5 together with the central filter 2.

Fig. 5 shows a top view of the in Fig. 2 shown central filter. The central filter 2 has a filter holder 9 and positioning ribs 10 into which the in Figs. 1 to 4 The guide dome of the fine filter shown can be inserted so that the fine filter can be connected to the central filter 2. The storage medium of the central filter 2 has been omitted for the sake of clarity.

Fig. 6 shows a further plan view of the in Fig. 2 shown central filter. The central filter 2 has the handle 3 by means of which it can be pulled out of the housing (not shown) of the suction material container. The storage medium of the central filter 2 has been omitted for the sake of clarity.

Fig. 7 shows a top view of the in Fig. 3 fine filter shown. The fine filter 4 is designed as a plastic body which is provided with a filter medium 18. The fine filter 4 has the guide dome 11 at one end.

Fig. 8 FIG. 13 shows a partial cross-sectional view of the FIG Fig. 1 shown pre-filter including central filter and fine filter. The fine filter 4 has an inner dome 13 with a cone, which is designed to produce a sealing effect with the foam seal 14 of the central filter 2 formed on the storage medium 6 and the connector 12 of the prefilter 5.

Fig. 9 shows a further plan view of the in Fig. 4 shown central filter including fine filter. The fine filter 4 is arranged in the central filter 2. The fine filter 4 has latching elements 7 which are designed to latch with the prefilter (not shown). The central filter 2 has a position geometry 15.

Fig. 10 shows a top view of the in Fig. 1 suction material container shown. The central filter and the fine filter are omitted in this view for the sake of clarity. The pre-filter 5 has a further position geometry 16 which, as a counterpart to that in FIG Fig. 9 position geometry shown is formed. In the Fig. 9 The position geometry shown and the further position geometry 16 are designed in such a way that when the central filter 2 connected to the fine filter 4 is inserted into the housing 17, the bayonet connection of the fine filter 4 and the pre-filter 5 is aligned. Furthermore, the pre-filter 5 has counterparts 22 to the in Fig. 9 shown locking elements of the fine filter, which are designed to lock.

Fig. 11 shows a perspective partial view of a vacuum cleaner according to the invention. The vacuum cleaner has a suction material container 1 for receiving suction material, a Housing body 19, a handle 20 and a suction tube 21. In the device body 19, a drive unit (not shown) is arranged, which is designed to generate a suction flow. The suction material container 1 is detachably connected to the device body 19. The handle 20 is detachably connected to the suction material container 1 and the device body 19. The device body 19 and the suction tube 20 are detachably connected. The handle 19 and the suction tube 20 are connected to opposite ends of the device body 1. The vacuum cleaner is shown in its operational working position.

When operating the in Fig. 11 The vacuum cleaner shown, the user holds the vacuum cleaner by gripping the handle 20, which rests in the position on the suction material container 1, while an end (not shown) of the suction tube 21 pointing away from the device body 19 is directed towards the surface to be vacuumed (not shown), in order to suck up from this suction material (not shown). During operation, the suction air flow is generated, which flows through the suction pipe 21, the device body 19 and the suction material container 1.

Reference list

1

Suction material container

2

Central filter

3

Handle

4th

Fine filter

5

Pre-filter

6

Storage medium

7th

Locking elements

8th

Suction area

9

Filter mount

10

Position ribs

11

Leadership dome

12th

Support

13th

Interior dome

14th

Foam seal

15

Position geometry

16

further position geometry

17th

casing

18th

Filter medium

19th

Device body

20th

Handle

21st

Suction pipe

22nd

Counterpart

Claims (10)

Suction material container (1) for a hand-held cyclone vacuum cleaner, having - a housing (17), - A central filter (2) which is arranged in the housing (17), - A fine filter (4) which is arranged in the central filter (2) and which is designed such that it remains in the housing (17) when the central filter (2) is removed from the housing (17). Suction material container (1) according to claim 1, characterized in that the central filter (2) has a handle (3) which is designed in such a way that the central filter (2) is removed from the housing (17) by pulling the handle (3) out of the housing (17) Housing (17) is removed. Suction material container (1) according to one of the preceding claims, characterized by a prefilter (5) which is arranged in the housing (17) and in which the central filter (2) is arranged, the prefilter (5) concentric to the central filter (2) is arranged surrounding and the central filter (2) is arranged concentrically surrounding the fine filter (4). Suction material container (1) according to claim 3, characterized in that the fine filter (4) has a latching element (7) which is designed to latch with a corresponding counterpart of the pre-filter (4) in such a way that they form a bayonet connection so that the Fine filter (4) remains in the prefilter (5) when the central filter (2) is removed from the housing (17), but can be removed from the housing (17) by loosening the bayonet connection of the prefilter (5). Suction material container (1) according to one of the preceding claims, characterized in that the fine filter (4) is detachably connected to the central filter (2). Suction material container (1) according to one of the preceding claims, characterized in that the fine filter (4) has a plastic body which is provided with a filter medium, the central filter (2) has a storage medium (6) which is designed to store dust, and / or the prefilter (5) is designed as a foam, knitted and / or knitted filter. Suction material container (1) according to claim 6, characterized in that the central filter (2) has a foam seal (14) which is molded onto the storage medium (6), and the fine filter (4) has an inner dome (13) with a cone, who is trained with the foam seal (14) and a nozzle (12) of the pre-filter (5) to produce a sealing effect. Suction material container (1) according to one of the preceding claims 3 to 7, characterized in that the central filter (2) has a position geometry (15) and the pre-filter (5) has a further position geometry (16), the position geometry (15) and the further Position geometry (16) are designed in such a way that when the central filter (2) connected to the fine filter (4) is inserted into the housing (17), the bayonet connection of the fine filter (4) and the pre-filter (5) via the position geometry (15) and the further position geometry (16) is aligned. Hand-held cyclone vacuum cleaner, having the suction material container (1) according to one of the preceding claims. Vacuum cleaner according to claim 9, characterized by a device body (22) with a drive unit which is designed to generate an air flow through the suction material container (1) during operation, a suction area of the drive unit being arranged downstream of the air flow to the central filter (2).

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