CN107105948B

CN107105948B - Floor vacuum cleaner

Info

Publication number: CN107105948B
Application number: CN201580069796.9A
Authority: CN
Inventors: 拉尔夫·赛耶; 简·舒尔廷克
Original assignee: Eurofilters Holding NV
Current assignee: Eurofilters Holding NV
Priority date: 2015-01-20
Filing date: 2015-12-11
Publication date: 2021-08-20
Anticipated expiration: 2035-12-11
Also published as: RU2674866C1; ES2673249T3; AU2015378046A1; EP3047774A1; DK3047774T3; AU2015378046B2; WO2016116221A1; CN107105948A; EP3047774B1; US20180000301A1; PL3047774T3

Abstract

The invention relates to a floor vacuum cleaner (1) comprising a dust collector unit (2) mounted to a roller (3) and/or a rotating wheel, a suction hose (4), a suction duct (5) and a floor nozzle (7), wherein the floor nozzle (7) is fluidly connected to the dust collector unit (2) via the suction duct (5) and the suction hose (4), the floor vacuum cleaner (1) further comprising a motor-actuated fan unit (9) for sucking an air flow through the floor nozzle (7), the motor-actuated fan unit (9) being arranged between the floor nozzle (7) and the suction duct (5) such that the air flow sucked through the floor nozzle (7) flows through the motor-actuated fan unit (9) and into the suction duct (5).

Description

Floor vacuum cleaner

Technical Field

The present invention relates to floor vacuum cleaners.

Background

The vacuum cleaner can be used in a variety of different configurations or designs. The best known designs include upright vacuum cleaners, hand-held vacuum cleaners and floor vacuum cleaners.

An upright vacuum cleaner comprises a movable base unit above which is arranged an upper body with a vacuum cleaner container, wherein the two parts are mounted so as to be pivotable relative to each other. An electrically driven brush is typically provided in the base unit. For example, an upright vacuum cleaner is shown in EP 2030551. Such vacuum cleaners are sometimes referred to as brush/rapper type vacuum cleaners.

A hand-held vacuum cleaner includes a housing having a motor-driven fan and a dust collection chamber. A suction duct leads from one side of the housing, at the end of which a floor nozzle is arranged. Disposed on the other side of the housing is a handle, which is optionally disposed on the rod.

The floor vacuum cleaner comprises a housing mounted to the roller and/or wheel. A dust collection receptacle is disposed in the housing and contains a filter bag. The floor nozzle is connected to the dust collection chamber via a suction tube and a suction hose. In conventional floor vacuum cleaners, a motor-actuated fan unit is further arranged within the housing and generates a negative pressure within the dust collecting container. Thus, in the air flow direction, the motor-actuated fan unit is arranged downstream of the floor nozzle, the suction tube, the suction hose and the dust collecting container or filter bag, respectively. Such a motor-actuated electric fan unit is sometimes referred to as a purified air motor because clean air passes through the motor-actuated electric fan unit.

In particular, there are also vacuum cleaners from the front that draw dirty air directly across the motor fan and into the dust bag mounted immediately downstream. Examples of which are shown in US 2,101,390, US 2,036,056 and US 2,482,337. These forms of vacuum cleaners are no longer very common today.

Such dirty air or dirty air motor fans are also referred to as "dirty air motors" or "direct air motors". The use of such dirty air motors is also described in documents GB 554177, US 4,644,606, US 4,519,112, US 2002/0159897, US 5,573,369, US 2003/0202890 or US 6,171,054.

Disclosure of Invention

On this background, it is an object of the present invention to provide an improved floor vacuum cleaner.

This object meets the subject matter of claim 1. The floor vacuum cleaner according to the invention comprises a dust collector unit mounted to the roller and/or the wheel, a suction hose, a suction duct and a floor nozzle, wherein the floor nozzle is fluidly connected to the dust collector unit via the suction duct and the suction hose, and a motor-actuated fan unit for drawing an air flow through the floor nozzle, the motor-actuated fan unit being arranged between the floor nozzle and the suction duct such that the air flow drawn through the floor nozzle flows through the motor-actuated fan unit and into the suction duct.

Thus, a dirty air motor or a direct air motor is advantageously used in a floor vacuum cleaner. Even with low motor power, a high volume flow can be achieved by the floor vacuum cleaner according to the invention. The dirty air motor has, for example, a maximum speed of less than 30,000rpm and an electrical input power of less than 900W.

In the direction of the air flow, a floor nozzle, sometimes referred to as a "suction nozzle", is arranged upstream of the suction tube, which is arranged upstream of the suction hose, which is arranged upstream of the dust collector unit. The air flow drawn in by the motor-actuated fan unit through the floor nozzle first enters the suction duct, then the suction hose and then the dust collector unit. Due to the fluid connection, a continuous air flow is ensured through the floor nozzle, the suction tube, the suction hose into the dust collector unit.

It has surprisingly been found that the dirty-air motor can also be used advantageously in a floor vacuum cleaner, in particular in order to convey dirty air sucked through the floor nozzle into the suction duct.

In contrast to conventional floor vacuum cleaners, in which a negative pressure is present in the suction duct, the suction hose and the dust collector unit or the dust collection chamber during operation, the overpressure in the floor vacuum cleaner according to the invention is present in the suction duct, the suction hose and the dust collection chamber. In this way, the wall thickness of these elements can be reduced, or the use of stiffening elements (e.g. stiffening ribs) can be avoided to a lesser extent or even completely.

The motor actuated fan unit can be configured in such a way: in the state of the bore 8, at an electrical input power of less than 900W according to DIN EN60312-1, the motor-actuated fan unit has a volume flow of more than 30l/s, in particular more than 40l/s, still in particular more than 50 l/s. The motor actuated fan unit can alternatively or additionally be configured in such a way: in the state of the bore 8, at an electrical input power of less than 600W according to DIN EN60312-1, the motor-actuated fan unit has a volume flow of more than 25l/s, in particular more than 30l/s, still in particular more than 40 l/s. The motor actuated fan unit can alternatively or additionally be configured in such a way: in the state of the bore 8, at an electrical input power of less than 300W according to DIN EN60312-1, the motor-actuated fan unit has a volume flow of more than 15l/s, in particular more than 25l/s, still in particular more than 30 l/s.

In this way, a particularly effective floor vacuum cleaner is obtained.

Air data of the vacuum cleaner or motor actuated fan unit are determined according to DIN EN 60312-1: 2014-01. Reference is made in particular to section 5.8. Measuring device B according to section 7.3.7.3 was used. The measuring device B is also used if the measurement is made without the motor-actuated fan unit of the vacuum cleaner housing. For adapters, which may be necessary, for connection to the measurement chamber, the description in section 7.3.7.1 applies.

The terms "volume flow" and "suction air flow" are also used for the term "air flow" according to DIN EN 60312-1.

The floor nozzle can have a chassis with a base surface facing the surface to be sucked during operation of the floor vacuum cleaner, wherein the chassis has at least one air flow channel parallel to the base surface and the side of the chassis is provided with an opening. In particular, during operation of the floor vacuum cleaner, the base surface of the chassis can be placed on the surface to be suctioned or separated from the surface to be suctioned, for example by a bristle strip (bristle strip).

The chassis is also referred to as the nozzle base. The floor nozzle includes a suction opening for creating a fluid connection with the motor-actuated fan unit. The suction opening is in fluid connection with at least one air flow channel. In order to obtain good suction power, the contact pressure of the floor nozzle is advantageously adjusted by means of at least one, in particular one or more, air flow channels. The opening provided in the side of the chassis is arranged transversely to the intended sliding direction of the floor nozzle. One or more air flow channels can be provided from one side of the chassis to the opposite side of the chassis (in each case transversely to the sliding direction). In such end-to-end air flow channels, one opening is provided for each channel on either (opposite) side of the chassis.

The suction tube can have a diameter ranging from 25mm to 50mm, in particular ranging from 30mm to 45mm, still in particular ranging from 35mm to 45mm, and/or a length ranging from 600mm to 1200 mm. The suction tube can be formed to be rigid, in particular so that it cannot be deformed by the user during the intended use. The suction tube can be partially or completely made of plastic material or metal.

The suction hose can have a diameter in the range from 25mm to 50mm, in particular in the range from 30mm to 45mm, still in particular in the range from 35mm to 45mm, and/or a length in the range from 1000mm to 2500 mm. The suction hose can be configured to be flexible, in particular such that it can be deformed by the user during the intended use. The suction hose can be partially or completely made of a plastic material. In particular, the suction hose can comprise a plastic wall made of metal and/or a reinforcement (for example a spiral).

The suction tube and/or the suction hose can have a constant or variable diameter over their respective length. In particular, the suction tube and/or the suction hose can have a conical shape with a diameter that preferably decreases towards the floor nozzle. In particular, the above-mentioned diameters refer to the smallest diameter of the suction tube or the smallest diameter of the suction hose, respectively.

The ground nozzle can be configured and/or the motor actuated fan unit can be configured such that contact between the test probe according to IEC/EN 60335 and the fan wheel cannot be made through the ground nozzle. Reference is made to DIN EN 60335-1:2012-10 version section 8. In particular, test probe B was used.

This reduces the risk of damage to the motor-actuated fan unit and the risk of injury when touching the floor nozzle while the motor is running.

The floor vacuum cleaner can be a bag vacuum cleaner, in particular withAt least 800cm²In particular at least 1500cm²And more particularly at least 2500cm²The filtration area of (a). A bag type vacuum cleaner is a vacuum cleaner that causes sucked dust to be separated and collected in a vacuum cleaner filter bag. In particular, the floor vacuum cleaner can be a bag vacuum cleaner of a disposable bag.

The filter area of the vacuum cleaner filter bag refers to the entire area of the filter material located between or inside the edge seams (e.g. welded or glued seams). Any folds of the edges or surfaces that may be present need to be taken into account. The area of the bag fill opening or inlet opening (including the seam around the opening) is not part of the filter area.

The vacuum cleaner filter bag can be a flat bag or have a block bottom shape. A flat bag is formed by two side walls made of filter material joined together (e.g. welded or glued) along their outer edges. The bag filling opening or the inlet opening can be provided in one of the two side walls. The side faces or side walls can each have a rectangular basic shape. Each sidewall can include one or more layers of nonwoven and/or nonwoven material.

A floor vacuum cleaner in the form of a bag vacuum cleaner can comprise a vacuum cleaner filter bag, wherein the vacuum cleaner filter bag is designed in the form of a flat bag and/or a disposable bag.

The bag wall of the vacuum cleaner filter bag can comprise one or more layers of nonwoven and/or one or more layers of nonwoven. In particular, the bag wall of the vacuum cleaner filter bag can comprise one or more layers of nonwoven and/or a laminate of one or more layers of nonwoven. Such a laminate is described, for example, in WO 2007/068444.

The term nonwoven is used within the meaning of the standard DIN EN ISO 9092: 2010. In particular, films and paper structures, in particular filter papers, are not considered to be nonwovens. "nonwoven" is a structure made of fibers and/or continuous filament or staple fiber yarns that have been formed into a surface structure by some means (other than interweaving yarns such as woven, knitted, openwork, or cut pile fabrics) but that has not been bonded by some means. Through the bonding process, the nonwoven becomes a nonwoven. It is possible to dry-lay, wet-lay or extrude non-woven or non-woven materials.

The floor vacuum cleaner can comprise a blow-out filter, in particular having at least 800cm²The filtration area of (a). In particular, the blow-out filter can be configured to be pleated or folded. This enables the blow-out filter to achieve a large surface area with a small base area. The blow-out filter can be provided in a holder, as described for example in european patent application No. 14179375.2. Such a blow-out filter allows the use of vacuum cleaner filter bags with low separation efficiency, such as single-layer vacuum cleaner filter bags. For example, the following bag can be used as a vacuum cleaner filter bag with low separation efficiency: wherein the filter material of the bag wall has a surface weight of 15g/m²To 100g/m²Is spun-bonded. Thus, the vacuum cleaner filter bag can be formed, in particular, with a single layer. For example, alternatively, the following bags can be used: wherein the filter material of the bag wall consists of a laminate made of spunbond, meltblown and other spunbond (SMS).

Alternatively, the floor vacuum cleaner can be a bagless vacuum cleaner, in particular having a height of at least 800cm as described above²The filter area of (3) is blown out of the filter. Bagless vacuum cleaners are vacuum cleaners that allow the sucked dust to be separated and collected without a vacuum cleaner filter bag. In this case, the dust collector unit can comprise an impact separator or a centrifugal separator or a cyclone separator, respectively.

In the above-described floor vacuum cleaner, the motor-actuated fan unit can be arranged at and/or above the floor nozzle, in particular directly on and/or directly above the floor nozzle. This results in advantageous pumping performance. Furthermore, a compact structure of the unit comprising the floor nozzle and the motor-actuated fan unit can be obtained. For example, the motor-actuated fan unit can be configured such that air drawn through the floor nozzle enters the motor-actuated fan unit directly from the floor nozzle.

The motor actuated fan unit can be fluidly connected to the floor nozzle via a duct member. In this case, the motor-actuated fan unit is no longer arranged directly at and/or directly above the floor nozzle. In particular, the tube member can have a length of 10mm to 1200mm, preferably 10mm to 300 mm.

The motor actuated fan unit can comprise a (in particular single stage) radial fan. In radial fans, air is drawn in parallel or axially with respect to the drive axis of the fan wheel and deflected, in particular by approximately 90 °, by the rotation of the fan wheel and blown out radially.

The above floor vacuum cleaner can comprise a second motor-actuated fan unit. The second motor actuated fan unit can be a dirty air motor or a clean air motor (as described above).

In particular, in the case of a dirty-air motor, the second motor-actuated fan unit can be arranged, for example, between the floor nozzle and the suction duct, so that the air flow sucked in through the floor nozzle flows through the second motor-actuated fan unit into the suction duct. In particular, the second motor actuated fan unit can be fluidly disposed directly downstream of the first motor actuated fan unit.

Alternatively, the motor-actuated fan unit can be arranged between the suction hose and the dust collector unit such that the air flow sucked through the suction hose flows into the dust collector unit through the second motor-actuated fan unit. The dust collector unit can include a housing, wherein the second motor actuates the fan unit and is disposed in the housing.

In particular, in the case of a clean air motor, the second motor-actuated fan unit can be arranged fluidly downstream of the dust collector unit.

The first and second motor actuated fan units can have the same or different electrical input power. In particular, the electrical input power of each motor-actuated fan unit can be between 50W and 400W. In particular, the sum of the electrical input powers of the two motor-actuated fan units can be at most 900W.

It has been shown that the use of a second auxiliary motor to actuate the fan unit positively influences the clogging behaviour of the vacuum cleaner filter bag and enables a high volume flow to be obtained. This allows good collection of dust through the floor nozzle.

In principle, the ground nozzle can be an active or passive ground nozzle. The active floor nozzle has a brush roller (sometimes also referred to as a beating and/or rotating brush) in the suction opening. The brush roller can be electrically driven. The passive floor nozzle does not have a brushroll.

In the floor vacuum cleaner described, very good efficiency and suction performance can also be achieved by the floor nozzle being passive, i.e. without the brush roller, due to the overall design. When using a passive floor nozzle, the design and weight of the floor nozzle is simplified, which simplifies the operation.

Drawings

Further features are described with reference to the drawings, in which

FIG. 1 shows a first embodiment of a floor vacuum cleaner;

fig. 2 shows a second embodiment of a floor vacuum cleaner.

Detailed Description

Fig. 1 shows an example of a floor vacuum cleaner 1. The floor vacuum cleaner 1 shown comprises a dust collector unit 2 mounted to a roller 3 and thus movable in a rolling manner. Connected to the dust collector unit 2 is a suction hose 4, which suction hose 4 in turn is connected to a suction tube 5. The suction hose 4 comprises a flexible material which is deformable in particular during operation. The material used is for example a plastic material. The hose can be connected to a dust collector unit 2 which can be detached in a non-destructive manner or which cannot be detached in a non-destructive manner.

The suction tube 5 is formed so as to be rigid so that it cannot be deformed by the user during the intended use. The material of the suction duct 5 can be a plastic material or a metal. The connection between the suction tube and the suction hose can be formed such that it can be detached in a non-destructive manner or cannot be detached in a non-destructive manner. A handle 6 is also mounted to the suction tube 5.

The floor vacuum cleaner 1 further comprises a floor nozzle 7, the floor nozzle 7 being connected to a motor-actuated fan unit 9 via a duct member 8. An inclined joint, a rotary joint or a rotary/inclined joint can be provided between the tube member 8 and the motor-actuated fan unit 9 and/or between the floor nozzle 7 and the tube member 8 and/or between the motor-actuated fan unit 9 and the suction duct 5, respectively. Such a joint can also be realized, for example, by means of a bellows (bellow). Thus in the shown configuration a continuous fluid connection with the dust collector unit 2 is established through the floor nozzle 7, the duct member 8, the motor actuated fan unit 9, the suction duct 5 and the suction hose 4. The motor-actuated fan unit 9 is arranged between the floor nozzle 7 and the suction duct 5 such that dirty air drawn through the floor nozzle flows into the suction duct 5 through the motor-actuated fan unit 9.

Thus, the motor actuated fan unit 9 is a dirty air motor. Which in particular comprises a single-stage radial fan. The motor-actuated fan unit has a fan wheel whose axis is parallel to the surface to be sucked and perpendicular to the intended sliding direction of the floor nozzle during intended use.

The fan diameter may be 60mm to 160 mm. A motor actuated fan unit such as from AMETEK, inc, which is also used for ultrasonic cleaning of an Upright vacuum cleaner (e.g., sonclean VT PLUS) can be used.

The motor-actuated fan unit of SONICLEAN VT PLUS has features according to DIN EN 60312-1:2014-01 as described above. The motor actuated fan unit is measured without the vacuum cleaner housing. For adapters, which may be necessary, for connection to the measurement chamber, the description in section 7.3.7.1 applies. This shows that a high volume flow is achieved at low rotational speeds and low input power.

Air is drawn in by the motor-actuated fan unit 9 during operation. The air flow entering the vacuum cleaner 1 through the opening of the floor nozzle 7 passes through the tube member 8 and the motor-actuated fan unit 9 and then flows into the suction duct 5. Due to the arrangement of the motor-actuated fan unit 9 near the floor nozzle 7 and upstream of the suction duct 5 and the suction hose 4 in the air flow direction, an overpressure is present in the suction duct 5 and the suction hose 4.

In conventional floor vacuum cleaners, a motor-actuated fan unit is arranged to the dust collector unit, resulting in that the entire system, including the floor nozzle, the suction tube and the suction hose, as well as the dust collector unit itself, is subjected to a negative pressure. In order to prevent deformations of the suction tube, the suction hose and/or the dust collector device due to the underpressure, these elements must usually be reinforced. In the configuration shown in fig. 1, reinforcement is not required or only to a small extent due to overpressure of the suction tube 5, the suction hose 4 and the dust collector unit 2.

The example shown in fig. 1 is a bag vacuum cleaner. This means that arranged in the dust collector unit 2 is a vacuum cleaner filter bag, in which the sucked dirt and dust are separated. In particular, the vacuum cleaner filter bag may be a flat bag, the bag wall of which comprises one or more layers of nonwoven and/or nonwoven material. The vacuum cleaner filter bag is embodied as a disposable bag.

The use of a blow-out filter is advantageous when in particular a single-layer vacuum cleaner filter bag is used whose bag wall consists of exactly one layer of nonwoven, for example in the form of a spunbond. The dust filter can be used for filtering fine dust that is not separated in the vacuum cleaner filter bag. Such blow-out filters can have at least 800cm²The area of (a). In particular, the blow-out filter can be formed pleated or folded in order to have a large surface area with a small base area (small specific surface area).

Since there is no need to arrange a motor-actuated fan unit in the dust collector unit 2, a dust collector unit that is more compact and lighter than that in conventional floor vacuum cleaners can be implemented. The suction hose 4 typically has a diameter in the range of 25mm to 50mm and a length in the range of 1000mm to 2500 mm. The suction duct 5 typically has a diameter in the range 25mm to 50mm and a length in the range 600mm to 1200 mm.

The suction tube 5 is formed rigid and the suction hose 4 is formed flexible.

Fig. 2 shows an alternative embodiment of the floor vacuum cleaner 1, wherein like elements are provided with the same reference numerals as in fig. 1. In the example shown in fig. 2, the motor-actuated fan unit 9 is arranged directly above the floor nozzle 7 and above the floor nozzle 7. In this case, the axis of the fan wheel of the motor-actuated fan unit 9 is arranged vertically, i.e. perpendicular to the surface to be sucked, during the intended use. The sucked air enters the floor nozzle 7 through the suction opening and directly enters the motor-actuated fan unit 9 through a suction nozzle provided at the floor nozzle 7, flowing from the motor-actuated fan unit 9 into the suction duct 5. As a result, an overpressure exists in the suction tube (and also in the suction hose downstream of the suction tube).

The example shown in fig. 2 is a bagless vacuum cleaner. The dust collector unit 2 comprises a centrifugal separator or cyclone separator 10, respectively, in which the sucked up dirt and dust particles are separated by centrifugal force. Can be a single cyclone or a multiple cyclone vacuum cleaner. Alternatively, the bagless floor vacuum cleaner can also be designed as an impact separator (impact separator).

The dust collector unit 2 includes a blow-out filter with which fine dust that is not separated in the centrifugal separator is filtered. The blow-out filter can have at least 800cm²The area of (a). In particular, it can be pleated or folded in order to have a large surface area with a small base area. As described in european patent application No.14179375.2, a blow-out filter may be provided to the holder.

It should be understood that the features shown in fig. 1 and 2 can also be combined with each other in other ways. In particular, the configuration of the motor actuated fan unit according to fig. 1 can also be used in the example according to fig. 2, and the configuration of the motor actuated fan unit in fig. 2 can be used in the example according to fig. 1.

In addition to the one motor-actuated fan unit employed in the illustrated example, the floor vacuum cleaner can also include a second auxiliary motor-actuated fan unit. It has been found that the use of two motor-actuated fan units can result in lower suction power losses during operation of the floor vacuum cleaner than the use of a single motor-actuated fan unit, even if the sum of the electrical input powers of the two motor-actuated fan units is equal to the electrical input power of one motor-actuated fan unit.

The second motor-actuated fan unit can be designed as a dirty air motor and can be arranged fluidly upstream of the dust collector unit such that dirty air also flows through the second motor-actuated fan unit. The two motor-actuated fan units can have the same or different electrical input power.

Alternatively, the second motor-actuated fan unit can be designed as a clean air motor and can be arranged fluidly downstream of the dust collector unit. For example, model name 467.3.601-4 (to be called Domel, doo Otoki 21, 4228) of Domel corporation can be used

Available from Slovenija) actuates the fan unit.

In either embodiment, there is no need to provide a brush roll (e.g., a beating brush and/or a rotating brush) on or in the floor nozzle 7.

Claims

1. A floor vacuum cleaner (1) comprising a dust collector unit (2) mounted to a roller (3) and/or a wheel, a suction hose (4), a suction duct (5) and a floor nozzle (7), wherein the floor nozzle is fluidly connected to the dust collector unit via the suction duct and the suction hose,

the floor vacuum cleaner further comprises a motor-actuated fan unit (9) for drawing an air flow through the floor nozzle,

wherein the floor nozzle is arranged upstream of the suction duct, the motor-actuated fan unit is arranged between the floor nozzle and the suction duct, the suction duct is arranged upstream of the suction hose, and the suction hose is arranged upstream of the dust collector unit in the direction of air flow,

wherein the air flow drawn in through the floor nozzle flows through the motor-actuated fan unit and into the suction duct,

wherein the floor nozzle comprises a chassis having a base surface facing the surface to be sucked during operation of the floor vacuum cleaner, the chassis having at least one air flow channel parallel to the base surface and the air flow channel having an opening provided at a side of the chassis.

2. The floor vacuum cleaner of claim 1, wherein the motor actuated fan unit is configured to: in the aperture state, the motor-actuated fan unit generates a volume flow of more than 30l/s at an electrical input power of less than 900W according to DIN EN 60312-1; in the aperture state, the motor-actuated fan unit generates a volume flow of more than 25l/s at an electrical input power of less than 600W according to DIN EN 60312-1; and/or in the state of the orifice, at an electrical input power of less than 300W according to DIN EN60312-1, the motor-actuated fan unit produces a volume flow of more than 15 l/s.

3. A floor vacuum cleaner according to claim 1 or 2, wherein the suction tube has a diameter in the range from 25mm to 50mm and/or a length in the range from 600mm to 1200 mm.

4. A floor vacuum cleaner according to claim 1 or 2, wherein the suction hose has a diameter in the range from 25mm to 50mm and/or a length in the range from 1000mm to 2500 mm.

5. A floor vacuum cleaner according to claim 1 or 2, characterized in that the motor-actuated fan unit has a fan wheel, the floor nozzle being configured and/or the motor-actuated fan unit being configured such that no contact can be made between a test probe according to IEC/EN 60335 and the fan wheel via the floor nozzle.

6. A floor vacuum cleaner as claimed in claim 1 or 2, which comprises a blow-out filter.

7. The floor vacuum cleaner of claim 6, wherein the blow-out filter has at least 800cm²The filtration area of (a).

8. A floor vacuum cleaner as claimed in claim 1 or 2, which is a bag vacuum cleaner.

9. A floor vacuum cleaner as claimed in claim 8, wherein the bag vacuum cleaner has at least 800cm²The filtration area of (a).

10. A floor vacuum cleaner as claimed in claim 8, characterized in that the floor vacuum cleaner comprises a vacuum cleaner filter bag which is designed in the form of a flat bag and/or a disposable bag.

11. A floor vacuum cleaner as claimed in claim 10, characterized in that the bag wall of the vacuum cleaner filter bag comprises one or more layers of nonwoven and/or one or more layers of nonwoven.

12. A floor vacuum cleaner as claimed in claim 1 or 2, which is a bagless vacuum cleaner.

13. The floor vacuum cleaner of claim 12, wherein the bagless vacuum cleaner has a filter area of at least 800cm²The blow-out filter of (1).

14. A floor vacuum cleaner according to claim 12 wherein the dust collector unit comprises an impingement separator or a centrifugal separator.

15. A floor vacuum cleaner according to claim 1 or 2, wherein the motor-actuated fan unit is arranged at and/or above the floor nozzle.

16. A floor vacuum cleaner according to claim 15, wherein the motor-actuated fan unit is arranged directly on and/or directly above the floor nozzle.

17. A floor vacuum cleaner according to claim 1 or 2, characterized in that the motor-actuated fan unit is fluidly connected to the floor nozzle via a duct member (8).

18. A floor vacuum cleaner as claimed in claim 1 or 2 wherein the motor-actuated fan unit comprises a single stage radial fan.

19. A floor vacuum cleaner as claimed in claim 1 or 2, which comprises a second motor-actuated fan unit.

20. A floor vacuum cleaner as claimed in claim 1 or 2 wherein the floor nozzle has no rotating brush.