DE102017114897A1 - Fine vacuum cleaner, use of same and suction pipe - Google Patents

Abstract

The invention relates to a hand vacuum cleaner (10) for cleaning surfaces, comprising: - a suction tube (11) with handle (12), which extends along a longitudinal axis and has a surface (27) for sucking air and dust particles, - a separation system (14) for separating the dust particles, - a hose (13) for connecting the separation system (14) to the suction pipe (11), - a motor (15) for generating a negative pressure such that the air and dust particles from the suction pipe (11) are supplied to the separation system (14) - a battery (22) for supplying power to the motor (15). The invention is characterized in that the suction tube (11) has a plurality of openings (16) on the surface (27). for sucking in the air and dust particles.

Description

• - ein Saugrohr mit Griff, das sich, entlang einer Längsachse erstreckt und eine Oberfläche hat, zum Ansaugen von Luft und Staubpartikeln;
• - ein Trennsystem zur Abscheidung der Staubpartikel;
• - einen Schlauch zur Verbindung des Trennsystems mit dem Saugrohr;
• - einen Motor zur Erzeugung eines Unterdrucks derart, dass die Luft und Staubpartikel aus dem Saugrohr dem Trennsystem zugeführt werden
• - eine Batterie zur Versorgung des Motors mit Strom.

The invention relates to a hand vacuum cleaner for cleaning surfaces, comprising:

• a suction tube with a handle extending along a longitudinal axis and having a surface for sucking in air and dust particles;
• - A separation system for the separation of dust particles;
• - A hose for connecting the separation system with the suction pipe;
• - A motor for generating a negative pressure such that the air and dust particles are fed from the suction pipe to the separation system
• - a battery to power the motor.

The invention further relates to the use of the hand vacuum cleaner and a suction tube.

A hand vacuum cleaner is for example from the US 2012079671 known. In this hand vacuum cleaner, the operator holds a handle, a suction tube, a motor, a separation system for the separation of dust particles, a battery, a floor nozzle with her joint and possibly brushes. Especially the floor nozzle with its joint, the battery, the separation system and the engine have a certain weight.

Together, these functional units form a hand vacuum cleaner whose weight can cause problems for the user. For longer cleaning processes and especially for cleaning areas where the hand vacuum cleaner or floor nozzle can not be supported on the floor, i. If the hand vacuum cleaner has to be lifted with its nozzle, the user can quickly tire out or not even lead the nozzle of the hand vacuum cleaner to the desired locations. Particularly problematic here are vertical or sloping surfaces which are not at ground level, for example the surfaces of screens, glass surfaces, windows, walls, plants and furniture.

Not only because of the weight is a hand vacuum cleaner like in the US 2012079671 f poorly suited to these surfaces, the cleaning process is also inefficient, because the floor nozzle must be guided exactly to the point to be cleaned, which can be cumbersome especially on vertical surfaces such as those of screens, glass surfaces, windows, walls, plants and furniture.

The invention is therefore based on the object to improve a hand vacuum cleaner of the type mentioned so that the fast and efficient cleaning of surfaces is possible. In addition, it should be possible by lowering the weight to be held less vigorous or elderly persons to use a hand vacuum cleaner.

The invention is also based on the object to specify the use of a hand vacuum cleaner and a suction tube.

According to the invention this object is achieved by a hand vacuum cleaner according to claim 1. With a view to the use of a hand vacuum cleaner, this object is achieved by the subject matter of claim 11. With respect to the suction pipe, this object is achieved by the subject matter of claim 12.

In particular, the object is achieved by a hand vacuum cleaner of the type mentioned in the present invention, that the suction pipe on the surface has a plurality of openings for sucking the air and dust particles.

An inventively designed hand vacuum cleaner also has the advantage that the suction tube can be performed with multiple openings on the surface without effort on the surface to be cleaned. The movement of the suction tube is preferably parallel to the surface. The multiple openings cover a large area. Thus, a large area can be cleaned with a single movement. Furthermore, it is not necessary to lead a single opening exactly to the surface to be cleaned.

In addition, eliminates the weight of a floor nozzle or a nozzle head and the usually heavy joint. Apart from the weight load through the floor nozzle or the nozzle head and the joint, these components shift the focus of the suction pipe away from the handle, which makes the operation more difficult and more strenuous.

Especially in sensitive areas such as screens, glass surfaces, windows, walls, plants and furniture, it is important to controlled the hand vacuum cleaner, soft and smooth over the surfaces, resulting in a hand vacuum cleaner according to the invention because of the multiple openings, because of the reduced weight and because of advantageous center of gravity is possible.

In a preferred embodiment, the hand vacuum cleaner includes a housing having a mounting system for attaching the housing to a belt or belt system, the housing containing the separation system, the battery and / or the motor. About the fastening system, the housing can be attached to a belt or a belt system and attached, for example, to the waist or upper body of the user, so that also the separation system, the battery and / or the engine can be carried comfortably on the hip or the back. Thus, the weight that has to be held in the user's hand, can be significantly reduced again, whereby the benefits listed above are even more pronounced.

The battery can be easily removed from the case for replacement or recharging. However, in other embodiments, the battery may also be charged in the housing. Particularly advantageous is the carrying of the battery in the housing on a belt or belt system, since batteries are particularly heavy.

The housing may include a switch for turning on and off the hand vacuum cleaner. Pressing here means the use of the suction function.

In other embodiments, the intake manifold and / or the handle contains the engine.

In a preferred embodiment, the suction tube contains plastic. In a further preferred embodiment, the suction tube is made of plastic. Preferably, the suction tube is in one piece. By one-piece is meant that the suction tube (as) is made of one piece. Furthermore, the suction tube is preferably rigid. Particularly preferred is a suction tube which contains plastic and is in one piece. In other embodiments, the suction tube contains one or more metals. In other embodiments, the suction tube is made of one or more metals. Preference is given to light metals, for example aluminum. The suction tube can therefore be a thin-walled aluminum tube.

Preferably, the suction tube has a length of 10 to 150 cm, preferably from 15 to 100 cm, particularly preferably from 20 to 60 cm. By length is meant the maximum extent along the longitudinal axis of the suction tube. The length is limited on the one hand by the transition of the suction tube in the hose and on the other hand by the end facing away from the hose. A shorter suction tube has less weight, a high suction power and is easier to handle, a longer suction tube can clean a larger area with one movement.

In a preferred embodiment, the suction pipe is closed on the, the hose facing away from the end. For cleaning, the longitudinal side of the suction pipe is preferably moved over the surface to be cleaned, so that an opening at the end remote from the hose costs unnecessary suction power.

Preferably, the suction tube has an inner diameter of less than 2 cm, in particular less than 1.5 cm. Particularly preferred is an inner diameter between 0.5 and 1.5 cm. Preferably, the inner diameter is filled with air. Due to a small diameter of the suction tube whose function is not impaired, but over conventional vacuum cleaners material and weight is saved.

Preferably, the suction tube has an outer diameter of less than 3 cm, in particular less than 2 cm. Particularly preferred is an outer diameter between 1 and 2 cm. The outer diameter results from the sum of the thickness of the material of the suction tube, preferably of the plastic, and the air-filled inner diameter. Due to a small diameter of the suction tube whose function is not impaired, but over conventional vacuum cleaners material and weight is saved.

Preferably, the ratio of the inner diameter of the suction pipe to the length of the suction pipe is less than 1/30, particularly preferably less than 1/45. In other words, the suction tube, with regard to its inner diameter, disproportionately long.

In a preferred embodiment, the separation system comprises a filter system, preferably a bag filter system. It is advantageous that the bag filter system does not require regular emptying, so it is user friendly.

Preferably, the hand vacuum cleaner comprises at least one fabric, preferably a cloth, and / or at least one brush, which is arranged on the outside of the suction tube, preferably in the region of the openings, wherein the fabric preferably comprises electrostatic material and / or microfibers.

A fabric with electrostatic material is charged by friction, for example when passing over a surface, and attracts dust particles. A fabric with microfibers has a very large area and can absorb a large amount of dust. It is advantageous for the at least one fabric containing electrostatic material and / or microfibers, and / or the at least one brush, for dust particles to be conveyed in the vicinity of the openings and to be absorbed more easily. The at least one fabric and / or the at least one brush are also advantageous if, for some reason, the suction force of the vacuum cleaner is insufficient to absorb all the dust particles. In this case, the vacuum cleaner is supported by the at least one fabric and / or the at least one brush. For example, should the battery be deflated, so not cleaned surface can be cleaned by merely wiping with the suction tube become. The at least one fabric, preferably a cloth, with electrostatic material and microfibers may take on various shapes and thicknesses. The fabric is adapted in shape to the openings. It is also possible to use several fabrics with electrostatic material and microfibers. Another advantage of the at least one fabric is that sensitive surfaces, such as those of screens, glass surfaces, windows, plants and furniture, are spared.

The invention is also based on the idea of specifying the use of a handheld vacuum cleaner according to the invention for removing dust particles from surfaces, in particular screens, glass surfaces, windows, walls, plants and / or furniture. The use of a hand-held vacuum cleaner designed according to the invention has the advantage that the suction tube can be guided with several openings on the surface without effort and in parallel over the surface to be cleaned. The multiple openings cover a large area. Above all, it is not necessary to lead a single opening exactly to the point to be cleaned.

In addition, eliminates the weight of a floor nozzle or a nozzle head and the usually heavy joint. Apart from the weight load through the floor nozzle or the nozzle head and the joint, these components shift the focus of the suction pipe away from the handle, which makes the operation more difficult and more strenuous. Especially with sensitive surfaces such as screens, glass surfaces, windows, walls, plants and furniture, it is important to controlled the hand vacuum cleaner, gently and smoothly over the surfaces, resulting in the use of a hand vacuum cleaner according to the invention because of the multiple openings, the reduced weight and the advantageous center of gravity is possible.

In addition, the invention is based on the idea to provide a suction tube for a vacuum cleaner, which extends along a longitudinal axis and has a surface for sucking air and dust particles, wherein the suction tube on the surface has a plurality of openings for sucking the air and dust particles, and is closed on the, the hose facing away from the end. Thus, a large area can be cleaned with one movement. For further advantages and preferred embodiments of the suction tube according to the invention, reference is made to the above statements.

• 1 einen erfindungsgemäß ausgebildeten Handstaubsauger;
• 2 einen Querschnitt durch die Längsachse des Saugrohres.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. The drawings are schematic and do not necessarily reflect proportions correctly. In these show:

• 1 an inventively designed hand vacuum cleaner;
• 2 a cross section through the longitudinal axis of the suction tube.

1 shows the hand vacuum cleaner 10 for cleaning surfaces, comprising a suction tube 11 which has a handle 12 for one or two hands of a user. The suction tube 11 is rigid and one-piece, so (as) of a piece. It preferably contains plastic and has a low weight. The suction tube 11 extends along a longitudinal axis over a length 24 and forms the surface around the longitudinal axis 27 , The handle 12 located on the, nine openings 16 opposite side of the suction tube 11 , The suction tube 11 is on that, the hose 13 opposite end 23 closed and points to its surface 27 along its longitudinal axis, nine rectangular openings 16 for sucking in air and dust particles. Air and dust particles are released through a vacuum via a hose 13 in a separation system for the separation of dust particles 14 conveyed, whereby the negative pressure by a motor 15 which is generated by a battery 22 is powered.

The several openings 16 , the suction tube 11 , the hose 13 , the separation system 14 , the motor 15 and the battery 22 are arranged in this embodiment, that the sucked air in this order through the hand vacuum cleaner 10 flows. In addition to the separation system 14 , which here includes a bag filter system, is preferably another filter to protect the engine 15 in the hand vacuum cleaner 10 , The absorbed air cools the engine 15 and the battery 22 , Over the air outlet 20 escapes the aspirated and purified air.

At the hose 13 it is an ordinary plastic vacuum cleaner hose. It is characterized by a low weight, flexibility and a certain robustness. Preferably, it is a so-called corrugated tube. Preferably, the hose has 13 the same, a similar or slightly larger, for example, by a maximum of 10, 20 or 30% larger inner diameter as the suction pipe 11 ,

At the handle 12 it is a handle for one or two hands. The handle 12 protrudes approximately perpendicular to the longitudinal axis of the suction tube 11 out of this. This allows the suction tube 11 be easily guided with its longitudinal axis parallel over the surface to be cleaned. Preferred is a shown, so-called hand, carrying or bow handle. The handle 12 is preferably as shown in the vicinity of the transition to the hose or centrally on the suction pipe 11 , The handle 12 includes a switch in this example 19 to the Switching off and on or pressing the hand vacuum cleaner 10 , Pressing here means the use of the suction function. In other embodiments, the handle is 12 Extendable. In other words, the distance from the suction tube 11 to the handle 12 be enlarged in order to clean with a longer reach areas, such as high walls or ceilings. The distance from the suction tube is preferred 11 to the handle 12 bridged by a rigid connector. In certain embodiments, this connection is made by at least one telescopic pole.

The suction of air and dust particles is carried out by a negative pressure. This is produced by the engine 15 , As an engine 15 a customary for vacuum cleaner motor is used, for example, a series motor or AC motor or a shaded pole motor. In order to create a negative pressure or a pressure ratio, the motor may include a blower and drive this. In other words, the engine may be a blower motor. This means that the engine can produce pressure ratios between 1.3: 1.0 and 2.9: 1.0. According to the invention, the engine may also include a compressor and drive it. With a compressor, such as a centrifugal compressor, a greater negative pressure can be generated. Furthermore, the motor may comprise a triac actuator, to which the suction power can be set with a variable resistor over the current flow angle. The actuator also serves the inrush current limit.

As a battery 22 come especially rechargeable batteries, also called batteries or accumulators, in question. These preferably contain lithium and / or nickel. Examples are nickel metal hydride, lithium ion and lithium iron phosphate accumulators. Suitable, with regard to their performance, traction batteries, such as those used for electric bikes.

In this embodiment, the hand vacuum cleaner includes 10 nine rectangular openings 16 , As shown, a plurality of openings are preferred 16 over the length 24 of the suction pipe 11 distributed. As shown, the openings are 16 preferably on one side along the longitudinal axis of the suction tube 11 appropriate. In this embodiment, the openings 16 created in a single row. In other embodiments, the openings 16 created in several rows. The individual openings 16 can on the suction pipe 11 also form different shapes, such as round shapes, squares or rectangles.

The individual openings 16 In this embodiment, in each case a simple perforation of the suction tube 11 , In other words, in this embodiment, the single opening 16 in the direction of the longitudinal axis of the suction tube 11 consistently the same cross-sectional area. In other embodiments, the individual openings are specially shaped, for example, the openings are widened or tapered in the direction of the longitudinal axis of the suction tube. Thus, the suction of the dust particles can be promoted.

The cross-sectional areas of the different openings 16 are the same size in this embodiment. The cross-sectional areas of the various openings are different in size in other embodiments. It is advantageous if the cross-sectional areas of the various openings, with increasing distance to the motor 15 , increase. So can over the length 24 of the suction pipe 11 an approximately similar negative pressure and a similar suction through all openings 16 be generated.

In this embodiment, the hand vacuum cleaner includes 10 nine openings 16 , In other embodiments, the plurality of openings are two to 300 , preferably three to 100 , more preferably five to 80 , Openings.

In this embodiment, the hand vacuum cleaner further comprises a housing 17 which is the separation system 14 , the engine 15 and a battery 22 contains. The housing 17 includes a fastening system 21 for fastening the housing to a belt. About the belt is the case 17 strapped around the waist of a user, allowing the separation system 14 , the motor 15 and a battery 22 to be worn on the hip. Thus, the weight that has to be held in the user's hand, again significantly lowered. The battery 22 just out of the case 17 to replace them or to recharge them. The battery 22 but also in the case 17 getting charged. The housing 17 includes in this embodiment another switch 19 to switch off and on or to operate the hand vacuum cleaner. Pressing here means the use of the suction function. An inventive hand vacuum cleaner 10 However, only a switch 19 feature.

In this embodiment, the suction pipe 11 a length 24 of 55 cm. Advantageous is a low weight, good handling and suction with a sufficient length for efficient cleaning large areas.

In this embodiment, the suction pipe 11 on the, the hose 13 opposite end 23 closed. As for cleaning, the long side of the suction tube 11 , with the openings 16 , is moved over the surface to be cleaned, an opening at the, the hose 13 remote, The End 23 , only absorb suction and absorb little additional dust.

2 shows a section across the longitudinal axis of the suction tube 11 , You can see the inside diameter 25 and the outside diameter 26 ,

In this embodiment, the suction tube 11 an inner diameter 25 from 1 cm up. Due to a small inner diameter 25 of the suction pipe 11 becomes the function of the suction pipe 11 Not affected, compared to conventional vacuum cleaners but material and weight is saved.

In this embodiment, the suction tube 11 an outer diameter 26 of 1.5 cm. Due to this small outer diameter 26 the suction pipe becomes the function of the suction pipe 11 Not affected, compared to conventional vacuum cleaners but material and weight is saved.

In this embodiment, the ratio of the inner diameter 25 of the suction pipe 11 to the length 24 of the suction pipe 11 less than 1 / 30 respectively. 1 / 45 , namely 1 / 55 , Thus, the suction tube 11 disproportionately long. A narrow suction tube reduces weight. At the same time, the suction pipe 11 be longer at the same weight and a longer suction tube 11 through the openings 16 be covered on the surface 27 a larger area.

The separation system 14 for the separation of dust particles includes a system common for vacuum cleaners. It preferably comprises a bag filter system, but cyclone separation systems or water filter systems may also be included according to the invention. An advantage of a bag filter system is that the bag filter system does not require regular emptying, so it is user-friendly.

In this embodiment, the hand vacuum cleaner includes 10 , outside on the suction pipe 11 , in the area of the openings 16 , a fabric 18 comprising electrostatic material and microfibers. The tissue 18 with electrostatic material and microfibers is electrostatically charged by friction, for example, when passing over a surface and attracts dust particles. The microfibers lead to a very large area, leaving the tissue 18 can absorb a large amount of dust. Beneficial to the tissue 18 that contains electrostatic material and microfibers, is that this fabric dust particles in the vicinity of the openings 16 transported and thus helps with absorption. Such a fabric is also advantageous when the suction force of the hand vacuum cleaner 10 for some reason is not enough to absorb all dust particles. In this case, the hand vacuum cleaner 10 supported by such a tissue. For example, should the battery 22 emptied, so can not yet cleaned surface by merely wiping with the suction pipe 11 getting cleaned. The at least one fabric 18 with electrostatic material and microfibers is in its shape the openings 16 customized. Another advantage of the at least one fabric 18 Using electrostatic material and microfibers ensures that sensitive surfaces such as screens, glass surfaces, windows, plants and furniture are protected and not scratched. Also so-called vacuum cleaner brushes can for these purposes on the suction pipe 11 be attached.

The hand vacuum cleaner 10 This embodiment enables easy and efficient cleaning of surfaces. In addition, lowering the weight to be held will enable less vigorous or elderly people to use a hand vacuum cleaner.

The hand vacuum cleaner 10 This embodiment of the invention has the advantage that the suction tube 11 with his nine, over the length 24 of the suction pipe 11 distributed, openings 16 , can be performed without effort on the surface to be cleaned. The nine openings 16 cover a large area. In the hand vacuum cleaner according to the invention 10 it is not necessary to lead an opening exactly to the point to be cleaned.

In addition, eliminates the weight of a floor nozzle or a nozzle head and the usually heavy joint. Apart from the weight load through the floor nozzle or the nozzle head and the joint, these components shift the focus of the suction pipe away from the handle, which makes the operation more difficult and more strenuous. In a hand vacuum cleaner according to the invention 10 the center of gravity of the suction tube is closer to the handle 12 , which facilitates the use. The displacement of the weight of the separation system for the separation of dust particles described in this embodiment 14 , of the motor 15 and the battery 16 on the hip, reinforcing the benefits already described. Especially in sensitive areas such as screens, glass surfaces, windows, walls, plants and furniture, it is important to controlled the hand vacuum cleaner to gently and smoothly over the surfaces, resulting in a hand vacuum cleaner according to the invention 10 because of the nine openings 16 , reduced weight, and favorable center of gravity is possible.

From the embodiment shown here arise in the same way the preferred embodiments and advantages in the use of a vacuum cleaner according to the invention 10 , Also the preferred embodiments and advantages a suction tube 11 are derivable from this embodiment.

LIST OF REFERENCE NUMBERS

10

Handstaubsauger

11

suction tube

12

Handle

13

tube

14

Separation system (for the separation of dust particles)

15

engine

16

opening

17

casing

18

Fabric and / or brush

19

switch

20

air outlet

21

Fastening system for a belt or belt system

22

battery

23

The tube facing away from the suction tube

24

Length of the suction tube

25

Inner diameter of the suction pipe

26

Outer diameter of the suction pipe

27

surface

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2012079671 [0003]
• US 2012079671 f [0005]

Claims (12)

A handheld vacuum cleaner (10) for cleaning surfaces, comprising: - a suction tube (11) having a handle (12) extending along a longitudinal axis and having a surface (27) for sucking in air and dust particles; - A separation system (14) for the separation of the dust particles; - A hose (13) for connecting the separation system (14) with the suction tube (11); - A motor (15) for generating a negative pressure such that the air and dust particles from the suction pipe (11) to the separation system (14) are supplied - a battery (22) for supplying the motor (15) with power; characterized in that the suction tube (11) on the surface (27) has a plurality of openings (16) for sucking the air and dust particles. Hand vacuum cleaner (10) after Claim 1 characterized by : a housing (17) having a mounting system (21) for attaching the housing (17) to a belt or belt system, the housing (17) including the separation system (14), the battery (22) and / or the motor (15). Hand vacuum cleaner (10) after Claim 1 or 2 , characterized in that the suction tube (11) contains plastic and / or is in one piece. Hand vacuum cleaner (10) according to any one of the preceding claims, characterized in that the suction tube (11) has a length (24) of 10 to 150 cm, preferably from 15 to 100 cm, particularly preferably from 20 to 60 cm. Hand vacuum cleaner (10) according to one of the preceding claims, characterized in that the suction pipe (11) on the hose (13) facing away from the end (23) is closed. Hand vacuum cleaner (10) according to any one of the preceding claims, characterized in that the suction tube (11) has an inner diameter (25) of less than 2 cm, in particular less than 1.5 cm. Hand vacuum cleaner (10) according to one of the preceding claims, characterized in that the suction tube (11) has an outer diameter (26) of less than 3 cm, in particular less than 2 cm. Hand vacuum cleaner (10) according to one of the preceding claims, characterized in that the ratio of the inner diameter (25) of the suction tube (11) to the length (24) of the suction tube (11) is less than 1/30, preferably less than 1/45, is. Hand vacuum cleaner (10) according to one of the preceding claims, characterized in that the separation system (14) comprises a filter system, preferably a bag filter system. Hand vacuum cleaner (10) according to one of the preceding claims, characterized by : at least one fabric, preferably a cloth, and / or at least one brush (18) on the outside of the suction tube (11), preferably in the region of the openings (16 ), wherein the fabric preferably comprises electrostatic material and / or microfibers. Use of a hand vacuum cleaner (10) according to one of the preceding claims for the removal of dust particles from surfaces, in particular screens, glass surfaces, windows, walls, plants and / or furniture. Suction pipe (11) for a vacuum cleaner, which extends along a longitudinal axis and has a surface (27) for sucking air and dust particles, characterized in that the suction pipe (11) on the surface (27) has a plurality of openings (16) for sucking the air and dust particles and on the hose (13) facing away from the end (23) is closed.

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