CN107361695B

CN107361695B - Device with dusting duster and suction unit for cleaning dusting duster

Info

Publication number: CN107361695B
Application number: CN201710333798.5A
Authority: CN
Inventors: 格奥尔格·哈克特; 乌韦·克姆克; 米夏埃尔·西克尔特; 海科·京特
Original assignee: Warwick Corp
Current assignee: Warwick Corp
Priority date: 2016-05-12
Filing date: 2017-05-12
Publication date: 2020-10-27
Anticipated expiration: 2037-05-12
Also published as: CN107361695A; TW201739411A; DE102016108821B4; DE102016108821A1

Abstract

The invention relates to a device for dusting with a dusting duster comprising synthetic fibres and/or filaments (24), a holder (2) for the dusting duster and a suction unit (3) for cleaning the dusting duster, wherein the suction unit has a suction fan (12) and a motor (13) for driving the suction fan, and wherein the holder forms a chamber (4) for accommodating the dusting duster, which has at least one air inlet (9) at an upper section. In order to achieve a high cleaning efficiency when using the dusting duster (1) and to achieve a convenient and effective cleaning of the dusting duster which is loaded with dust, the invention proposes that the device is embodied as a mobile, portable hand-held appliance with a battery (14) for supplying power to a motor (13) and a dust separating chamber (11) adjacent to the chamber (4) accommodating the dusting duster (1). For this purpose, the at least one air inlet (9) is preferably provided with at least one ionizer (25) in order to improve the dust removal by the fibers and/or threads (24) subjected to electrostatic charges.

Description

Device with dusting duster and suction unit for cleaning dusting duster

Technical Field

The invention relates to a device for dusting with a dusting duster comprising synthetic fibres and/or filaments, a holder for the dusting duster and an air suction unit for cleaning the dusting duster, wherein the air suction unit has an air suction fan and a motor for driving the air suction fan, and wherein the holder forms a chamber for accommodating the dusting duster, the chamber having at least one air inlet at an upper section.

Background

Various embodiments of vacuum cleaners for suctioning dust and dirt particles from a floor surface have been known for a long time. Different fittings are also known for removing dust and dirt from furniture, racks and other items of furniture. These accessories include, in particular, a floor brush nozzle, which is mounted on a tubular handpiece of a flexible vacuum cleaner hose. However, if such a floor brush nozzle, which is fitted to the handpiece of a cleaner hose, is used to clean racks or other surfaces on which fragile objects are arranged in abutment with each other, the handling of the floor brush nozzle is often regarded as difficult and dangerous. Alternatively, dusting cloths or dusters are used for this cleaning.

The duster has an advantage that it has a plurality of flexible wires or fibers which are bent to one side when the wires or fibers are pressed onto the object to be cleaned. Thus, the dusting duster can be moved well between the articles arranged against each other, wherein its threads or fibers can follow the contours of the article to be cleaned. The wires and fibers of a dusting duster are typically implemented to create an electrostatic charge upon its application, thereby allowing the dust to be removed to adhere thereto and not be lifted without masking. However, in such a duster, there is a problem that the electrostatic charge is generally insufficient to achieve effective dust removal. In addition, there are cleaning problems in dusting dusters. For this reason, the user must frequently go to a position where the user can shake off the duster to separate the dust attached thereto.

DE 60007266T 2 discloses a vacuum cleaner with a suction pipe equipped with a floor nozzle, which suction pipe has a holder for a spring duster. The holder forms a cylindrical chamber having a plurality of air inlets at an upper wall member thereof. An exhaust port is located between the suction duct and the holder through which air can flow from the chamber into the suction duct. During normal operation of the vacuum cleaner, the air outlet is closed by a cover which is rotatably fixed by means of a hinge. The cover is connected to the flap such that the flap does not prevent an effective suction airflow at the floor nozzle from flowing through the suction duct during normal operation of the cleaner. The cover is under the action of a spring, which pretensions the cover in the direction of the closed position. Furthermore, the cover is provided with an angled flange, on which the duster can be applied by means of a spring in order to swing the cover open in order to open the exhaust opening. When the cleaner is in operation, the spring duster introduced into the chamber vibrates, cleans attached dust, and generates electrostatic charge by vibrating contact with the walls of the chamber. The known system is only used with conventional floor cleaners. Thereby not providing a truly convenient operation of the duster.

Disclosure of Invention

On this basis, the object of the invention is to provide a device for dusting an area above ground which not only enables a high cleaning efficiency to be achieved with the aid of a dusting duster, but also enables a convenient and effective cleaning of the dusting duster.

According to the invention, this object is achieved by a device having the features given in claim 1. Preferred and advantageous embodiments of the device according to the invention are given in the dependent claims.

The invention therefore proposes a device for dusting, consisting of a dusting duster with synthetic fibers and/or filaments, a holder for the dusting duster and an air suction unit for cleaning the dusting duster, wherein the air suction unit has an air blower and a motor for driving the air blower, and wherein the holder forms a chamber for accommodating the dusting duster, the chamber having at least one air inlet at an upper section. According to the invention, the device is embodied as a mobile, portable hand-held appliance with a battery for powering the motor and a dust separating chamber adjacent to the chamber housing the duster.

The device according to the invention, by being embodied as a mobile portable hand-held appliance with an integrated suction unit and an integrated dust separating chamber, achieves both a convenient and effective cleaning of the used dust-loaded dusting duster and a high cleaning efficiency when cleaning surfaces by means of the dusting duster cleaned in a container.

The synthetic fibers and/or threads of the duster of the device according to the invention may also be a fibrous or filament fabric, such as a non-woven strip and a cotton-ball-like fabric.

An advantageous embodiment of the device according to the invention is characterized in that the at least one air inlet is provided with at least one ionizer. Oxygen ions are generated in the intake region by means of an ionizer, which come into contact with the synthetic fibers and/or threads of the dusting duster during operation of the suction unit and thereby neutralize the electrostatic charge of the fibers and/or threads or at least reduce the electrostatic charge thereof.

As a result, dust particles adhering to the synthetic fibers and/or threads are separated off or can be sucked away more easily therefrom, since the dust particles no longer or only with a low force adhere to the fibers or threads due to the reduced electrostatic charge of the fibers and/or threads. The reduction of the synthetic fibers and/or filaments is thus assisted by ions, preferably nitrogen ions and/or oxygen ions, and the ions are generated in the region of the air-conveying inlet by means of at least one ionizer.

Preferably, at least one ionizer is assigned a time-limiting element which, when the suction fan and the ionizer are activated, automatically switches off the ionizer after a predefined or predefinable time duration, while the suction fan still continues to operate. Thereby cleaning the dusting duster loaded with dust and subsequently re-charging the cleaned fibres and/or threads in a particularly efficient manner.

According to a further embodiment of the device according to the invention, the at least one air inlet is arranged in the wall in such a way that a vortex is set in the chamber which rotates the dusting duster when the suction fan is running. Preferably, for this at least one air inlet is arranged in the side wall of the chamber housing the dusting duster, so that a vortex is set in the chamber that rotates the dusting duster when the suction fan is running. For example, the at least one air inlet opening is arranged in the housing of the device at a position which is spaced from the upper end of the housing by not more than 40mm, preferably not more than 30mm, particularly preferably not more than 20 mm.

According to a further advantageous embodiment of the invention, the chamber for receiving the dusting duster is defined by a container which tapers in the direction of the suction unit and has one or more ventilation holes in the lower region. A particularly effective separation of dust particles sucked off by the dusting duster can be achieved by means of the container. Furthermore, the tapering shape of the container contributes to the formation of a relatively strong vortex in the container, thereby enabling a more thorough cleaning of the dusting duster to a high dust binding effect and an efficient electrostatic charge of the cleaned fibres and/or threads of the dusting duster.

Preferably, the receptacle is mounted in a housing of the device, wherein the housing and the receptacle define a dust separation chamber. This embodiment is advantageous in terms of manufacturing technology and in terms of cleaning the device, in particular the dust separation chamber.

Furthermore, in terms of the handling of the duster and the container that houses it, it is advantageous that the container or housing is provided with a removable cover at the upper end.

In order to achieve a particularly rapid and effective generation of the electrostatic charge of the cleaned synthetic fibers and/or threads of the dusting duster, according to a further embodiment of the invention the cover is rotatably supported on the grab bar of the dusting duster. Thus, the duster inserted in the container can be rotated in relation to the container, wherein the cleaned fibres and/or threads rub on the inside of the container wall and can thus quickly and efficiently generate an electric charge. The dusting duster with cleaned fibres and/or threads is rotated by the turbulence occurring in the container during operation of the suction unit. The rotary bearing of the cover or the grab rail can be embodied, for example, as a rolling bearing, in particular as a ball bearing.

For the purpose of bringing the cleaned fibers and/or threads of the dusting duster again to an electrostatic charge, it is advantageous if the container is made of a thermoplastic, particularly preferably of polymethyl methacrylate. The material of the container and the material of the synthetic fibers and/or threads of the duster are preferably chosen such that they are relatively far from each other in terms of charging sequence. The charge sequence dictates the electron affinity of the material. The further a material is from the positive end of the charging sequence, the more electrons are emitted when contacting or rubbing against a material that is further from the negative end of the sequence.

A further advantageous embodiment of the invention is characterized in that the hand-held appliance is provided with a switch or a pushbutton which can be operated by means of the dusting duster introduced into the chamber. When the dusting duster is introduced into a chamber for suction, the suction is activated for this by pressing a button or key or by automatic recognition on the grip piece of the dusting duster. Thereby achieving a convenient operation of the device according to the invention. The user can thus introduce the dusting duster into the chamber for cleaning dust-loaded fibers and/or threads by means of only a hand movement or an arm movement and at the same time switch on the suction unit and, if necessary, at least one ionizer.

The invention also comprises a configuration in which the device has at least one sensor and/or a switch, wherein the suction unit and the at least one ionizer are activated or deactivated by the control device and/or by means of the switch as a function of the state measured by the sensor. Preferably, a sensor detects whether the duster is introduced into the chamber and then activates at least one ionizer and a motor driving the suction fan. Thereby, the synthetic fibers and/or threads of the duster are first discharged and the dust accumulated on the fibers and/or threads is sucked away. The ionizer is then turned off after a short time, so that the cleaned, rotating fibers and/or threads can create an electrostatic charge by friction on the inner surface of the plastic container. This embodiment of the invention also includes an embodiment in which the hand-held appliance is provided with a switch or a pushbutton which can be operated by means of a dusting duster introduced into the chamber.

The device according to the invention does not require a dust filter bag. According to a preferred embodiment, the device is implemented such that a filter unit for intercepting dust is arranged between the chamber for receiving the duster and the suction fan.

In terms of the compact design of the device according to the invention and the simple cleaning of the dust separating chamber, it is advantageous if the suction fan, the motor driving the suction fan and the battery for supplying power to the motor are arranged in a common housing part which is releasably connected to the holder of the dusting duster.

Preferably, the housing of the device according to the invention is dimensioned such that a user of the device can carry the device by simply holding it with his hand. Furthermore, the housing may also be provided with a handle, e.g. an arcuate handle, protruding from the housing.

A further advantageous embodiment of the device according to the invention provides that the holder for the duster is mounted on a belt or a harness by means of the suction unit. Thus, the user of the device can carry the device. In this regard, the user does not need to hold the device in hand, and therefore at least one hand is free for other operations, such as for positioning of an object on a surface to be cleaned.

Drawings

The invention is elucidated below on the basis of an embodiment and with reference to the drawing. Fig. 1 shows a longitudinal section through the device according to the invention as the sole figure.

Detailed Description

As shown in the drawing, the apparatus according to the present invention includes a duster 1, a holder 2 for a duster and a suction unit 3 for cleaning the duster 1. For this purpose, the device is embodied as a mobile, portable hand-held appliance. The device may simply be held in the hand or secured on a belt or harness.

The holder 2 for the duster 1 is configured in the form of a chamber 4 for receiving the duster 1. The chamber 4 is defined by a container 5 which tapers in the direction of the suction unit 3. The container 5 may also be referred to as an inner housing part. The container 5 is mounted in a form-fitting connection in an outer housing part or housing 6 of the device. The housing 6 is preferably tubular or substantially hollow-cylindrical in shape. The container 5 has a hollow cylindrical upper section 5.1 and a hollow conical lower section 5.2. The outer diameter of the housing 6 is, for example, in the range of 7 to 10 cm. It is also possible to provide the housing 6 with a waist-shaped taper (not shown) on the axial longitudinal section, which waist-shaped taper serves as a holding area for manually carrying the movable device. Alternatively or additionally, a handle (not shown) may also be mounted on the housing 6.

The housing 6 is provided at its upper end with a removable cover 7, which closes the chamber 4 at the upper side. The cover 7 is rotatably supported on the rod 1.2 of the duster 1 provided with the handle 1.1. The rotary bearing can be formed, for example, by a rolling bearing 8 or a ball joint. The chamber 4 has a plurality of air inlets 9 in the area of its upper wall, through which air is sucked into the chamber 4 and is sucked in the direction of the suction unit 3 as a result of the negative pressure generated by the suction unit 3. In this case, a plurality of ventilation openings 10 are formed in the lower section of the container 5. Alternatively or additionally, the bottom of the container 5 may have a relatively large vent hole 10. The housing 6 and the container 5 define a dust separation chamber 11.

The suction unit 3 is composed of a suction fan 12 and a motor 13 for driving the suction fan 12. A battery 14 is provided for supplying power to the motor 13. The suction fan 12, the motor 13 and the battery 14 are arranged in a common housing part 15, which is releasably connected to the holder 2 of the dusting duster 1, i.e. the upper outer housing part 6. For example, the two housing parts 6, 15 have complementary form-fitting connection elements and are provided with at least one releasable locking element (not shown). An electrical socket for a charging cable for charging the battery 14 is indicated by 16, which is arranged, for example, in the housing bottom 17.

Between the dust separating chamber 11 and the suction fan 12, a filter unit 18 intercepting dust is arranged. The filter unit 18 is arranged, for example, on a partition 19 of the housing part 15, wherein the partition 19 has a through-opening 20 provided with a fine mesh. The housing part 15 surrounding the suction fan 12 and the motor 13 is provided with an air outlet 21, which is formed, for example, in the base 17 of the housing part. A carrier body supporting the motor 13 and the suction fan 12 is indicated at 22, which carrier body likewise has one or more through-openings 23 or defines one or more through-openings.

The housing parts 6, 15 of the device and the cover 7 are made of plastic. The removable container 5 inserted into the housing 6 is preferably made of polymethyl methacrylate.

The dusting duster 1 is made of a rod 1.2 provided with a plurality of synthetic fibers (preferably ultra fine fibers) and/or filaments 24, which by friction generate an electrostatic charge. The fibers and/or filaments 24 may be comprised of, for example, polyamide, polypropylene, polyethylene, and the like. The handle 1.1 of the dusting duster 1 is preferably configured as a telescopic handle or rod so that the dusting duster 1 can be extended variably if necessary for cleaning high places such as blinds, frame tops, picture frames etc.

The air inlet 9 in the chamber 4 is constructed and arranged such that, when the suction fan 12 is operated, a vortex (air circulation) is formed in the chamber 4, by means of which vortex the dusting duster inserted therein is rotated.

One or more ionizers 25 are arranged in the region of the air inlet 9. Thereby, oxygen ions are generated at the beginning of the suction, which significantly reduce or neutralize the electrostatic charge of the fibers and/or threads 24 of the dusting duster 1 to be cleaned and thus assist the suction. In this case, at least one ionizer 25 is assigned a time-limiting element (not shown) which, when the suction fan 12 and the ionizer 25 are activated, automatically switches off the ionizer 25 after a predefined or predefinable time duration, while the suction fan 12 still continues to operate. The at least one ionizer 25 is thus switched off after a short time, so that the cleaned, rotating fibers and/or threads 24 can again generate an electrostatic charge by friction on the inner surface of the container 5 made of plastic.

An on/off switch or main switch is designated 26 and is arranged, for example, on the outside of the housing 6. Alternatively or additionally, the device may be provided with a switch or key (not shown) which is operated by means of the duster 1 introduced into the chamber 4.

Furthermore, the mobile device can comprise at least one sensor 27, wherein the suction unit 3 and the at least one ionizer 25 are activated or deactivated by the control means depending on the state measured by the sensor. Preferably, it is detected by the sensor 27 whether the duster 1 is introduced into the chamber 4. When the sensor 27 knows that the dusting duster 1 is introduced into the chamber 4, at least one ionizer 25 is activated and the motor 13 driving the suction fan 12. Thereby, the electrostatic charge of the synthetic fibers and/or filaments 24 is first reduced or neutralized and dust adhering to the fibers or filaments 24 is sucked away. The ionizer 25 is then switched off after a short time, which is predefined or can be set, so that the cleaned, rotating fibers and/or threads 24 on the surface of the plastic container 5 can again generate an electrostatic charge, after which the duster 1 can be reused for the cleaning process.

Claims

1. Device for dusting with a dusting duster (1) comprising synthetic fibres and/or filaments (24), a holder (2) for the dusting duster and a suction unit (3) for cleaning the dusting duster, where the suction unit (3) has a suction fan (12) and a motor (13) for driving the suction fan, and where the holder (2) forms a chamber (4) for receiving the dusting duster (1), which chamber has at least one air inlet (9) at an upper section, characterized in that the device is embodied as a movable portable hand held appliance with an accumulator (14) for powering the motor (13) and a dust separating chamber (11) adjacent to the chamber (4) receiving the dusting duster, where the at least one air inlet (9) is provided with at least one ionizer (25), the at least one air inlet (9) is arranged in the wall in such a way that a vortex is set in the chamber (4) which rotates the dusting duster (1) when the suction fan (12) is running.

2. The device according to claim 1, characterized in that the chamber (4) for accommodating the dusting duster is defined by a container (5) which tapers in the direction of the suction unit (3) and has one or more ventilation holes (10) in the lower region.

3. The device according to claim 2, characterized in that the container (5) is mounted into a housing (6) of the device, wherein the housing (6) and the container (5) define a dust separation chamber (11).

4. Device according to claim 3, characterized in that the container (5) or the housing (6) is provided at the upper end with a removable cover (7).

5. Device according to claim 4, characterized in that the cover (7) is rotatably supported on the rod (1.2) of the duster (1).

6. Device according to claim 1, characterized in that a time-limiting element is assigned to the at least one ionizer (25), which, in the case of activation of the suction fan (12) and ionizer (25), automatically switches off the ionizer (25) after a predefined or predefinable duration, while the suction fan (12) still continues to operate.

7. Device according to any one of claims 1 to 6, characterized in that the hand-held appliance is provided with a switch or a push-button which can be operated by means of a dusting duster (1) introduced into the chamber (4).

8. Device according to claim 1, characterized in that it has at least one sensor (27) and/or a switch, wherein the suction unit (3) and at least one ionizer (25) are activated or deactivated by control means and/or by means of a switch depending on the state measured by the sensor (27).

9. The device according to claim 8, characterised in that the sensor (27) detects whether the dusting duster (1) is introduced into the chamber (4) or not, and that the hand-held appliance is provided with a switch or key which can be operated by means of the dusting duster (1) introduced into the chamber (4).

10. The device according to any of claims 1 to 9, characterized in that a filter unit (18) intercepting dust is arranged between the chamber (4) for accommodating the duster (1) and the suction fan (12).