KR20230048629A - Handheld vacuum cleaner with removable filter - Google Patents

Abstract

The portable vacuum cleaner 1 includes a vacuum cleaner housing 2, a gripping handle 3 connected to the vacuum cleaner housing 2, a suction inlet 4 through which air can be sucked by the portable vacuum cleaner 1, At least one exhaust port (5) through which cleaned air can be discharged from the portable vacuum cleaner (1), an air circuit (6) extending between the suction inlet (4) and the exhaust opening (5), arranged in the air circuit air intake unit (7) comprising an electric motor (7.1) and a fan (7.2) coupled to the electric motor (7.1) to produce airflow in the air circuit (6) from the intake inlet (4) to the exhaust port (5). a suction unit 7, a waste separation device arranged in the air circuit 6 upstream of the suction unit 7 and allowing the airflow generated by the suction unit 7 to pass when the handheld vacuum cleaner 1 is in operation. (8), a removable bin (9) which receives the waste separated by the waste separation device (8) and is removably attached to the vacuum cleaner housing, a first wall (12.3) at least partially covering the suction unit (7). It includes a suction unit housing 12 comprising a. The suction unit housing 12 comprises a second wall 12.4 at least partially covering the first wall 12.3. The second wall 12.4 is formed apart from the first wall 12.3 and at least partially covers the interior space 15 of the portable vacuum cleaner 1 extending between the first wall 12.3 and the second wall 12.4. define

Description

Handheld vacuum cleaner with removable filter

The present invention relates to the field of vacuum cleaners for vacuuming dirt and small particle size waste present on surfaces to be cleaned, which may be, for example, tiles, wood chip parquets, laminates, carpets or rugs.

A vacuum cleaner, more specifically a handheld vacuum cleaner, is:

·Vacuum cleaner housing,

A handle connected to the vacuum cleaner housing,

An intake inlet that allows air to be sucked in by the handheld vacuum cleaner;

at least one exhaust port through which cleaned air can be expelled from the handheld vacuum cleaner;

An airflow circuit extending between the intake inlet and the exhaust port;

an intake unit mounted in the airflow circuit, including an electric motor and a fan to generate airflow in the airflow circuit from the intake inlet to the exhaust port;

a waste separation device mounted in the airflow circuit upstream of the suction unit and allowing the airflow generated by the suction unit to pass through when the handheld vacuum cleaner is in operation;

• It is known to include a suction unit casing that at least partially covers the suction unit. Suction unit casings are commonly used in handheld vacuum cleaners to position and hold the suction unit and to protect the suction unit.

“Waste separation device” refers to a separation device capable of separating waste and/or dust from an intake air stream, for example a filtration device using at least one filter medium or a cyclone device using at least one cyclone. . Waste and/or dust is hereinafter referred to as "waste".

For this type of handheld vacuum cleaner, a compromise has been sought for years between suction efficiency, waste storage capacity of the removable tank, compactness and lightness to keep the handheld vacuum cleaner manageable.

In order to reduce the size of the handheld vacuum cleaner and reduce its external dimensions, some manufacturers, for example, seek to reduce the thickness of the inner and outer walls of the handheld vacuum cleaner, while others seek to reduce the size of the suction unit. wanted to reduce. Reducing the thickness of the inner or outer walls of a handheld vacuum cleaner is generally done at the expense of its robustness, thereby shortening, for example, the overall life of the handheld vacuum cleaner which is more susceptible to impact. Reducing the size of the suction unit without changing the motor technology is often accompanied by a reduction in suction power and reduced vacuuming performance.

The present invention aims to alleviate all or part of the aforementioned disadvantages.

The technical problem of the present invention is to provide a handheld vacuum cleaner with improved lightness and compactness without otherwise compromising the robustness of the device and the performance of the vacuum cleaner.

To this end, the present invention relates to a handheld vacuum cleaner, which includes:

·Vacuum cleaner housing,

A handle connected to the vacuum cleaner housing,

An intake inlet that allows air to be sucked in by the handheld vacuum cleaner;

at least one exhaust port through which cleaned air can be expelled from the handheld vacuum cleaner;

An airflow circuit extending between the intake inlet and the exhaust port;

an intake unit mounted in the airflow circuit, comprising an electric motor and a fan coupled to the electric motor to produce an airflow in the airflow circuit from the intake inlet to the exhaust port;

a waste separation device mounted in the airflow circuit upstream of the suction unit and allowing the airflow generated by the suction unit to pass through when the handheld vacuum cleaner is in operation;

A removable tank which accommodates the waste separated by the waste separation device and is removably attached to the vacuum cleaner housing;

· A suction unit casing comprising a first wall at least partially covering the suction unit.

According to the invention, the suction unit casing comprises a second wall at least partially covering the first wall. The second wall is formed apart from the first wall and at least partially defines an interior space of the handheld vacuum cleaner extending between the first wall and the second wall.

The present invention makes it possible to provide the interior space of a handheld vacuum cleaner adjacent to the suction unit. This inner space is formed in the casing of the suction unit. In other words, the wall of the suction unit casing not only provides a protective casing around the suction unit, but also serves as the interior space of the handheld vacuum cleaner functioning for the vacuum cleaner; That is, an interior space designed to form an airflow duct or to accommodate a functional subassembly of a handheld vacuum cleaner, such as, for example, a noise attenuator or damper, an electronic board for controlling or activating the handheld vacuum cleaner, or a filter that is part of the airflow circuit. makes it possible to create

Providing this interior space in the direct suction unit casing while still serving for a handheld vacuum cleaner makes it possible to reduce the number of walls needed to create such an interior space if not integrated into the suction unit casing and ultimately the vacuum cleaner. It makes handheld vacuum cleaners lighter and more compact while preserving the robustness of the machine without changing its performance.

A handheld vacuum cleaner may also have one or more of the following features, alone or in combination.

Advantageously, the first wall and the second wall of the suction unit casing are made in one piece. The first wall and the second wall are obtained, for example, by plastic injection molding.

This feature further facilitates the manufacture of the suction unit casing.

Advantageously, the electric motor includes an output shaft having a rotational axis, and the output shaft is coupled to the fan.

The first wall and the second wall are partially annular in shape around the axis of rotation. Thus, the first wall and the second wall define a partially annular interior space around the suction unit. In this configuration, the interior space does not extend all around the suction unit. For example, the interior space may have a “C” shape extending partially around the suction unit. To meet the requirements of specific vacuum cleaner configurations, the "C" shaped interior space makes it easy to provide through channels for wires or air ducts that do not pass through the interior space, for example. Thus, this configuration makes it possible to optimize the interior space when there are constraints such as, for example, through-channels for electric wires or air ducts that cannot pass through the interior space.

Advantageously, the first wall and the second wall are substantially coaxial with respect to the axis of rotation and are annular in shape, for example tubular or truncated conical. Thus, the first wall and the second wall at least partially define an annular interior space extending around the suction unit.

This configuration makes it possible to optimize the internal space extending around the suction unit. For example, a large functional subassembly, such as a dust filter, can be placed in this annular interior space while limiting its impact on the outer diameter of the handheld vacuum cleaner.

Advantageously, the first wall and the second wall are connected by at least one connecting wall. The first wall, the second wall and the connecting wall are made in one piece, preferably obtained by plastic injection molding. This configuration allows the suction unit casing to be easily manufactured.

Advantageously, the connecting wall extends radially with respect to the axis of rotation of the electric motor between the first wall and the second wall.

Advantageously, the connecting wall is in the shape of an annular disk.

In an alternative embodiment, the first wall and the second wall are connected by a connecting arm. In this case, the first wall, the second wall and the connecting arm are advantageously manufactured in one piece, preferably in a single piece obtained by plastic injection molding.

Advantageously, the suction unit casing comprises an access opening for accessing the interior space. The connecting wall is preferably formed on the side of the suction unit casing opposite the access opening.

The access opening allows easy insertion or removal of a removable subassembly of the vacuum cleaner, such as a removable filter. The access opening also makes the suction unit casing easier to release from the mold and thus easier to manufacture, especially when obtained in one piece by plastic injection molding.

Advantageously, the interior space formed between the first wall and the second wall forms a chamber or duct located on the airflow circuit. Airflow generated by the suction unit passes through the chamber or duct when the handheld vacuum cleaner is in operation. When the interior space forms a duct, it is typically an airflow duct for delivering air to the handheld vacuum cleaner. When the interior space forms a chamber, this chamber may be used to house functional subassemblies of the handheld vacuum cleaner, such as filters, noise attenuators or dampers forming part of the airflow circuit. Thus, the defined interior space can create or accommodate essential features of a handheld vacuum cleaner.

Advantageously, the interior space extending between the first wall and the second wall forms a filter chamber in which a filter, preferably a removable filter, is positioned, the filter chamber and the filter being arranged in an airflow circuit and the handheld vacuum cleaner When in operation, it allows the airflow generated by the suction unit to pass through. A filter chamber and a filter are arranged in the air flow circuit downstream of the intake unit.

Although the interior space is also designed to accommodate a filter that is part of the upstream portion of the airflow circuit, i.e. upstream of the suction unit, forming an interior space next to or around the intake unit makes this interior space part of the downstream portion of the airflow circuit, i.e. , when used in removable filters and filter chambers that are part of the airflow circuit downstream of the suction unit, allow further optimization of the airflow circuit in terms of pressure loss and overall dimensions.

Advantageously, the filter chamber is at least partially defined by the first wall, the second wall and the connecting wall. The access opening allows the filter to be installed or removed.

Advantageously, the filter chamber and filter have an annular shape extending around the suction unit.

Advantageously, the filter chamber comprises at least one air inlet formed in the connecting wall. An air inlet of the filter chamber is in air communication with an air outlet of the suction unit, and the filter chamber includes at least one air outlet formed in the second wall.

Advantageously, the first wall is free of openings.

Advantageously, at least part of the second wall forms at least one wall of the vacuum cleaner housing.

This configuration makes it possible to define the internal space between the walls already present in conventional vacuum cleaners. Accordingly, the inner space can be formed with fewer walls than conventional vacuum cleaners, making the handheld vacuum cleaner lighter and more compact. This configuration also makes it possible to maximize the internal space between the vacuum cleaner housing and the protective casing of the suction unit. Moreover, since the first wall and the second wall are part of the same one-piece part, forming an internal space between the protective casing of the suction unit and the vacuum cleaner housing does not change the robustness of the handheld vacuum cleaner in this place.

When the second wall forms the wall of the vacuum cleaner housing, said at least one air outlet is an exhaust port. This configuration allows for simplification by limiting the number of ducts in the handheld vacuum cleaner.

Advantageously, the second wall of the suction unit casing is located between the removable tank and the rear part of the vacuum cleaner housing in a direction parallel to the axis of rotation of the motor.

Advantageously, an access opening providing access to the interior space opposes the removable tank.

According to this configuration of the invention, a functional subassembly of the vacuum cleaner, such as a removable filter, can be easily removed from the interior space through the access opening when the removable tank is removed from the vacuum cleaner housing. Once the removable tank is attached to the vacuum cleaner housing, the removable filter becomes inaccessible and cannot be removed from the interior space through the access opening.

Advantageously, the separation device is housed in a removable tank so that it can be separated from the vacuum cleaner housing together with the removable tank.

This configuration makes it possible to remove the separation device together with the removable tank, making later removal and cleaning of the separation device easier.

Advantageously, the removable tank is removably attached to the vacuum cleaner housing and contacts the vacuum cleaner housing via a contact surface formed on the vacuum cleaner housing.

Advantageously, the contact surface is substantially annular and the interior space and access opening are formed radially within the substantially annular contact surface.

Advantageously, the contact surface is formed by the substantially annular axial end of the second wall of the suction unit casing.

A substantially annular contact surface can easily be achieved on the second wall of the suction unit casing and allows the removable tank to make evenly distributed contact with the vacuum cleaner housing when the tank is attached to the vacuum cleaner housing. Evenly distributed contact of the vacuum cleaner housing with the removable tank makes it easier to achieve a seal in this contact area.

The removable tank may be fitted in various ways, in particular by a snap-on fit with at least one notch and a locking latch, a bayonet-type fit, a screw fit or any other means known to those skilled in the art. It can be attached to the vacuum cleaner housing by

Advantageously, the waste separation device is a cyclone separator having a main axis coaxial with the axis of rotation of the electric motor output shaft.

The following description highlights the features and advantages of the present invention. This description is based on the drawings including:
1 illustrates an overall view of a handheld vacuum cleaner according to a particular embodiment;
Fig. 2 illustrates the handheld vacuum cleaner of Fig. 1 according to a longitudinal section;
Fig. 3 illustrates the handheld vacuum cleaner of Fig. 1 according to a 3/4 front perspective view without a removable tank and separator;
Figure 4 illustrates a partial cross-sectional view of the back of the handheld vacuum cleaner of Figure 3;
Fig. 5 illustrates the handheld vacuum cleaner of Fig. 1 according to a 3/4 front perspective view without the removable tank and separator and with the removable filter partially removed from the filter chamber;
Figure 6 illustrates a partial cross-sectional view of the back of the handheld vacuum cleaner of Figure 5;
Fig. 7 illustrates the handheld vacuum cleaner of Fig. 1 according to a 3/4 front perspective view without the removable tank and separator and with the removable filter completely removed from the filter chamber;
Figure 8 illustrates a partial cross-sectional view of the back of the handheld vacuum cleaner of Figure 7;
Fig. 9 illustrates the suction unit casing of the handheld vacuum cleaner of Fig. 1 according to a 3/4 front perspective view;
Fig. 10 illustrates the suction unit casing of Fig. 1 in a longitudinal cross-section;

In the remainder of the description, handheld vacuum cleaners are referred to as vacuum cleaners.

1 to 10 show a vacuum cleaner housing 2, a handle 3 connected to the vacuum cleaner housing 2, an air intake inlet 4 through which air can be sucked in by the vacuum cleaner 1, and cleaned air. It shows a vacuum cleaner (1) comprising several air exhaust ports (5) through which air can be expelled from the vacuum cleaner (1). The vacuum cleaner 1 further includes an air flow circuit 6 extending between the intake inlet 4 and the exhaust port 5 . The vacuum cleaner (1) includes a suction unit (7) mounted on an airflow circuit (6). The intake unit 7 includes an electric motor 7.1 and a fan 7.2 coupled to the electric motor 7.1 (shown in Figs. 2 and 4) to flow air from the intake inlet 4 to the exhaust port 5. Airflow is created in the circuit (6). The handle 3 may be made in one piece with the vacuum cleaner housing 2 or attached to the vacuum cleaner housing.

The vacuum cleaner 1 also comprises a waste separation device 8 mounted upstream 6.1 of the air flow circuit 6 of the suction unit 7. The airflow generated by the suction unit 7 passes through the waste separation device 8 when the vacuum cleaner 1 is in operation. The vacuum cleaner 1 includes a removable tank 9, also referred to as a waste storage container, which receives and accumulates the waste separated by the waste separation device 8 and is removably attached to the vacuum cleaner housing 2. . The waste separation device 8 is advantageously arranged in a removable tank 9 . In this case, the removable tank 9 forms a separation chamber. Preferably, the waste separation device 8 is separated from the removable tank 9 to allow easier emptying of the contents of the removable tank when the removable tank 9 is removed from the vacuum cleaner housing 2. can The air intake inlet 4 is connected to the corresponding separation chamber inside the removable tank 9 by an air intake duct 4.1 (shown in Fig. 2).

The vacuum cleaner 1 preferably includes a battery pack 10 in the lower part of the vacuum cleaner. The bottom surface 10.1 of the battery pack 10 allows the vacuum cleaner 1 to be placed on a horizontal surface when the vacuum cleaner 1 is not in use (see Fig. 2). The handle 3 extends between the battery pack 10 and the vacuum cleaner housing 2, advantageously in the rear part 13 of the vacuum cleaner.

The vacuum cleaner 1 comprises a switch 11 for activating the vacuum cleaner, which in particular controls the activation of the suction unit 7 when switched on by the user.

The electric motor 7.1 comprises an output shaft 7.3 (shown in Figs. 2, 4, 6 and 8) with a rotational axis X. The output shaft 7.3 is coupled to the fan 7.2.

Advantageously, as shown in FIGS. 1 to 10 , the decoupling device 8 , the fan 7.2 and the electric motor 7.1 are aligned. More specifically, the waste separation device 8, the fan 7.2 and the electric motor 7.1 are aligned and centered on the axis of rotation X of the electric motor 7.1. In this configuration, the rotation axis X is the main axis of the vacuum cleaner 1 .

The suction unit 7 is in the rear part 13 of the vacuum cleaner 1 and the waste separation device 8 is located in front of the suction unit 7 . 4 and 6 show the rear part 13 of the vacuum cleaner 1 . In the embodiment shown in the drawings, the intake inlet 4 of the vacuum cleaner 1 forms the front end of the handheld vacuum cleaner 1 . This intake inlet 4 advantageously protrudes forward from the rest of the handheld vacuum cleaner 1 , especially with respect to the removable tank 9 .

The vacuum cleaner 1 further comprises a suction unit casing 12 at least partially covering the suction unit 7 . More specifically, the suction unit casing 12 includes a first wall 12.3 at least partially covering the suction unit 7.

The suction unit casing 12 can be seen in FIGS. 2 to 10 , more specifically in FIGS. 9 and 10 . The suction unit casing 12 is used in particular for positioning and holding the suction unit 7 in the vacuum cleaner 1 and also for protecting the suction unit 7 .

As shown in the drawing, the suction unit 7 may include an intermediate casing 7.4 arranged radially inside the suction unit casing 12 with respect to the axis of rotation X of the electric motor 7.1.

The suction unit casing 12 is in air communication with the suction unit 7 and includes an air inlet opening 12.1 and an air outlet opening 12.2 arranged on both sides of the suction unit 7 in the direction of the rotational axis X. . The air inlet opening 12.1 communicates with the upstream portion 6.1 of the air flow circuit 6 and the air outlet 12.2 communicates with the downstream portion of the air flow circuit 6. In other words, the upstream portion 6.1 of the air flow circuit 6 is located upstream of the suction unit 7 and extends between the intake inlet 4 and the suction unit 7. The downstream part 6.2 of the air flow circuit 6 is located downstream of the suction unit 7 and extends between the suction unit 7 and the exhaust port 5.

The separation device 8 is arranged in the upstream part 6.1 of the air flow circuit 6.

In the embodiment shown in FIGS. 1 to 10 , the separating device 8 is advantageously a cyclone separator with a main axis coaxial with the axis of rotation X of the output shaft of the electric motor. In an alternative embodiment not shown, and without departing from the scope of the present invention, the separation device may be made of a filter comprising a porous filter medium to allow air to pass through and to prevent waste from passing through.

In order to limit the amount of dust sucked into the suction unit 7, the vacuum cleaner, in addition to the waste separation device 8, is arranged in an air flow circuit between the waste separation device 8 and the suction unit 7 upstream. A filter 13 may be included. This upstream filter 13 is preferably removable; It is frustoconical in shape and is accommodated in the central part of the cyclone separator.

In order to limit or prevent the escape of dust from the exhaust port 5, the vacuum cleaner 1 is preferably arranged in the downstream part 6.2 of the air flow circuit 6, in addition to the waste separation device 8. A downstream filter 14 is included.

As shown more specifically in FIGS. 4, 6, 8, 9 and 10, the suction unit casing 12 includes a second wall 12.4 at least partially covering the first wall 12.3. . The second wall 12.4 is formed apart from the first wall 12.3 and at least partially covers the interior space 15 of the handheld vacuum cleaner 1 extending between the first wall 12.3 and the second wall 12.4. be defined as

The first wall 12.3 and the second wall 12.4 are advantageously annular in shape coaxial with the axis of rotation X of the output shaft 7.3 of the electric motor 7.1. The first wall 12.3 and the second wall 12.4 at least partially define an annular interior space 15 extending around the suction unit 7. In the embodiment shown in the drawings, the first wall 12.3 and the second wall 12.4 are more specifically tubular in shape. In an alternative embodiment not shown, the first wall and the second wall may also be substantially frustoconical in shape.

In another alternative embodiment not shown, the first wall and the second wall are partially annular in shape around the axis of rotation of the electric motor such that the first wall and the second wall define a partially annular interior space around the suction unit. . According to this alternative, the inner space may be in the shape of a ring section or a section with a "C" shape (non-closed ring), for example.

According to the embodiment shown in the drawings, the first wall 12.3 and the second wall 12.4 are joined by a connecting wall 12.5. 9 and 10, the first wall 12.3, the second wall 12.4 and the connecting wall 12.5 are advantageously in one piece, preferably in a single piece obtained by plastic injection molding. are manufactured Advantageously, the connecting wall 12.5 extends radially with respect to the axis of rotation X of the electric motor 7.1, the connecting wall 12.5 extending between the first wall 12.3 and the second wall 12.4. do. As shown in Figures 9 and 10, the connecting wall 12.5 is in the form of an annular disk. In one alternative as described above, the first wall and the second wall are partially annular in shape around the axis of rotation of the electric motor, and the connecting wall is not necessarily annular; The connecting wall may be, for example, in the shape of a disc section or may have a substantially rectangular or truncated conical shape or a “C” shape.

In another alternative embodiment (not shown), the first wall and the second wall may be connected by a connecting arm extending radially between the first wall and the second wall. According to this alternative, the first wall 12.3, the second wall 12.4 and the connecting arm are advantageously manufactured in one piece, preferably in a single piece obtained by plastic injection molding.

According to the embodiment shown in the drawings, the suction unit casing 12 comprises an access opening 12.6 for access to the interior space 15. A connecting wall 12.5 is formed on the side of the suction unit casing 12 opposite the access opening 12.6. Thus, the interior space 15 is defined by the walls 12.3, 12.4 and 12.5 of the suction unit casing 12 and forms a substantially “U” over half section, for example half section in FIG. 10 . This U-shape is shown in dotted lines in FIG. 10 and is referred to as 15.1. The access opening 12.6 faces the removable tank 9.

According to the embodiment shown in the drawings, the inner space 15 forms a filter chamber in which a filter is placed. The filter chamber and filter are arranged in the air flow circuit 6 and the air flow generated by the suction unit 7 passes through them when the vacuum cleaner 1 is in operation.

In the embodiment shown in the drawings, a filter chamber 15 is arranged in the downstream part 6.2 of the airflow circuit 6 and the filter is a downstream filter 14 as described above.

In the embodiment shown in the drawings, the filter chamber 15 and the downstream filter 14 are annular in shape and extend around the suction unit 7 .

The downstream filter 14 is preferably removable and the access opening 12.6 allows the filter 14 to be inserted into the filter chamber or when the removable tank 9 is removed from the vacuum cleaner housing 2 the filter ( 14) can be removed.

1 and 2 show the vacuum cleaner 1 in operating condition, ie the removable filter 14 is in place in the filter chamber and the removable tank 9 is attached to the vacuum cleaner housing 2. . 3-8 show three successive stages of disassembling the downstream filter 14 until the downstream filter 14 is completely removed.

Indeed, FIGS. 3 and 4 show the vacuum cleaner 1 in the first disassembly stage with the removable tank 9 removed and the downstream filter 14 still in place in the filter chamber. 5 and 6 show the vacuum cleaner in a second disassembly step in which the downstream filter 14 is partially removed from the filter chamber after the removable filter has translated along the main axis X. 7 and 8 show the vacuum cleaner in a third disassembly stage in which the downstream filter 14 has been completely removed from the filter chamber.

In an alternative embodiment not shown, the interior space instead of a downstream filter is an upstream filter (part of the upstream section 6.1 of the airflow circuit 6) or, for example, a noise attenuator or damper, controlling a handheld vacuum cleaner. other functional subassemblies of the handheld vacuum cleaner, such as an electronic board for activating or activating the vacuum cleaner. The interior space can also be used to define air ducts.

The filter chamber formed by the interior space 15 comprises at least one air inlet 12.7 formed in the connecting wall 12.5. As shown in FIG. 9 , several air inlets 12.7 are advantageously formed in the connecting wall 12.5. The air inlet 12.7 is in air communication with the air outlet 12.2 and the suction unit 7. The filter chamber includes at least one air outlet formed on the second wall 12.4. Advantageously, the filter chamber comprises several air outlets formed on the second wall 12.4.

The first wall 12.3 advantageously has no openings.

In the embodiment shown in the drawings, the two parts of the second wall 12.4 form the two walls 2.1 and 2.2 of the vacuum cleaner housing 2, and the air outlet formed in the second wall 12.6 is In the embodiment it forms the exhaust ports 5 formed in the walls 2.1 and 2.2. The walls 2.1 and 2.2 are arranged symmetrically on both sides of the vacuum cleaner 1.

The second wall 12.4 forming the walls 2.1 and 2.2 of the vacuum cleaner housing 2 is directed parallel to the axis of rotation A of the removable tank 9 and the electric motor 7.1 to the vacuum cleaner housing 2. ) is arranged between the rear part (2.3) of.

In the embodiment shown in the drawings, the removable tank 9 is connected via a contact surface 12.8 formed by the substantially annular axial end of the second wall 12.4 of the suction unit casing 12 to the vacuum cleaner housing ( 2) is removably attached to

A removable tank (9) is reversibly attached to the vacuum cleaner housing (2). The removable tank 9 is provided in various ways, in particular by a snap-on fit, a bayonet fit, a screw fit, or as shown in FIG. 1 , at least one notch 19 and a locking latch 20. ) through which it can be attached to the vacuum cleaner housing (2).

Of course, the present invention is in no way limited to the described and illustrated embodiments, as these embodiments are provided as examples only. Changes may still be made without departing from the scope of protection of the present invention, particularly with respect to the construction of various elements or by substituting technical equivalents.

Claims (16)

A handheld vacuum cleaner (1),
vacuum cleaner housing (2);
a handle (3) connected to the vacuum cleaner housing (2);
an intake inlet (4) allowing air to be sucked in by the handheld vacuum cleaner (1);
at least one exhaust port (5) through which cleaned air can be expelled from the handheld vacuum cleaner (1);
an air flow circuit (6) extending between the intake inlet (4) and the exhaust port (5);
An air flow circuit (6) from the intake inlet (4) to the exhaust port (5), including an electric motor (7.1) and a fan (7.2) coupled to the electric motor (7.1) as an intake unit (7) mounted in the air flow circuit. a suction unit (7), which creates an airflow at
a waste separation device (8) mounted in the airflow circuit (6) upstream of the suction unit (7) and allowing the airflow generated by the suction unit (7) to pass through when the handheld vacuum cleaner (1) is in operation;
a removable tank (9) containing the waste separated by the waste separation device (8) and removably attached to the vacuum cleaner housing;
a suction unit casing (12) comprising a first wall (12.3) at least partially covering the suction unit (7);
The suction unit casing (12) comprises a second wall (12.4) at least partially covering the first wall (12.3);
The second wall 12.4 is formed apart from the first wall 12.3 and at least partially covers the interior space 15 of the handheld vacuum cleaner 1 extending between the first wall 12.3 and the second wall 12.4. In the handheld vacuum cleaner, defined as,
The electric motor 7.1 includes an output shaft 7.3 with an axis of rotation X, the output shaft 7.3 is coupled to the fan 7.2, and the first wall 12.3 and the second wall 12.4 are the axis of rotation. (X) is partially annular in shape around the periphery, characterized in that the first wall (12.3) and the second wall (12.4) define an interior space (15) that is partially annular in shape around the suction unit (7). , a handheld vacuum cleaner (1). The handheld vacuum cleaner (1) according to claim 1, wherein the first wall (12.3) and the second wall (12.4) are made in one piece. 3. The electric motor (7.1) according to claim 1 or 2, comprising an output shaft (7.3) with an axis of rotation (X), the output shaft (7.3) being coupled to the fan (7.2), the first wall (12.3) ) and the second wall 12.4 are annular in shape substantially coaxial with the axis of rotation X, for example tubular or truncated conical, and the first wall 12.3 and the second wall 12.4 surround the suction unit 7 . A hand-held vacuum cleaner (1), at least partially delimiting an annular interior space (15) extending to . 4. The method according to any one of claims 1 to 3, wherein the first wall (12.3) and the second wall (12.4) are connected by at least one connecting wall (12.5), the first wall (12.3), the second wall (12.3) The handheld vacuum cleaner (1), wherein the wall (12.4) and the connecting wall (12.5) are made in one piece, preferably obtained by plastic injection molding. 5. The handheld vacuum cleaner (1) according to claim 4, wherein the connecting wall (12.5) extends radially with respect to the axis of rotation of the electric motor between the first wall (12.3) and the second wall (12.4). 5. The handheld vacuum cleaner (1) according to claim 4, wherein the connecting wall (12.5) is in the shape of an annular disk. 4. The method according to any one of claims 1 to 3, wherein the first wall (12.3) and the second wall (12.4) are connected by a connecting arm, the first wall (12.3), the second wall (12.4) and the connecting arm. The handheld vacuum cleaner (1), wherein the arm is manufactured in one piece, preferably obtained in one piece by plastic injection molding. 8. A method according to any of claims 1 to 7, wherein the suction unit casing (12) comprises an access opening (12.6) for access to the interior space (15), and the connection wall (12.5) preferably has an access opening (12.6). The handheld vacuum cleaner (1), which is formed on the side of the suction unit casing (12) opposite to (12.6). 9. The airflow according to any one of the preceding claims, wherein the interior space (15) is located on the airflow circuit (6) and the airflow generated by the suction unit (7) when the handheld vacuum cleaner (1) is in operation. A hand-held vacuum cleaner (1), forming a chamber or duct through which the 10. The method according to any one of claims 1 to 9, wherein the inner space (15) forms a filter chamber in which the filter (14) is placed, the filter chamber and the filter (14) being arranged in the air flow circuit (6) and the hand A handheld vacuum cleaner (1), which allows the airflow generated by the suction unit (7) to pass through when the handheld vacuum cleaner (1) is in operation. 11. Handheld vacuum cleaner (1) according to claim 10, wherein the filter chamber and filter (14) are arranged in the air flow circuit (6) downstream of the suction unit (7). 12. The filter chamber according to claims 4, 8 and 10 or 11, wherein the filter chamber is at least partially delimited by a first wall (12.3), a second wall (12.4) and a connecting wall (12.5), the access opening 12.6 allows the filter 14 to be inserted or removed. 13. Handheld vacuum cleaner (1) according to any one of claims 10 to 12, wherein the filter chamber and filter (14) are annular in shape and extend around the suction unit (7). 13. The filter chamber according to claim 12, wherein the filter chamber comprises at least one air inlet (12.7) formed in the connecting wall, the air inlet on the filter chamber being in air communication with the air outlet of the suction unit (7), the filter chamber having a second wall Hand-held vacuum cleaner (1), comprising at least one air outlet formed in (12.4). 15. The handheld vacuum cleaner (1) according to any one of claims 1 to 14, wherein at least part of the second wall (12.4) forms at least one wall (2.1, 2.2) of the vacuum cleaner housing (2). ). 16. Handheld vacuum cleaner (1) according to claims 14 and 15, wherein said at least one air outlet of a filter chamber is said at least one exhaust port (5).

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