WO2010018101A1 - Vacuum cleaner hose and hose seat for a vacuum cleaner with increased suction - Google Patents

Abstract

Vacuum cleaner hose (5) equipped at one end with a vacuum cleaner coupling (6) for connection of the vacuum cleaner hose (5) to a suction opening (3) of a first vacuum cleaner unit (1) for producing a vacuum and at the other end with a seat coupling (7) for connecting to a hose seat (8), wherein the inner diameter of the hose is at least 40 mm at the vacuum cleaner coupling (6). And a tubular hose seat (8) provided at one end with a hose coupling (10) for connecting a vacuum cleaner hose (5) and at the other end with a suction opening (9), wherein the inner tube diameter of the hose seat (8) at the hose coupling (10) is larger than the suction opening (9) and the inner diameter of the tubular hose seat (8) at the hose coupling (10) is at least 32 mm. A vacuum cleaner tube equipped at one end with a hose seat coupling for connecting to a hose seat (8) and at the other end with a suction opening, wherein the tube inner diameter of the vacuum cleaner tube at the hose seat coupling is larger than at the suction opening of the vacuum cleaner tube. The invention advantageously permits the flow resistance to be reduced and thus the energy use and operational nose to be reduced, and at the same time allows good ergonomic handling.

Description

 - -

Vacuum cleaner hose and hose attachment for one

Vacuum cleaner with increased suction power

description

Background of the invention

The invention relates to a vacuum cleaner hose, which is equipped at its one end with a vacuum cleaner coupling for connecting the vacuum cleaner hose to a suction opening of a vacuum generating vacuum cleaner unit and at its other end with a top coupling for connection to a hose attachment. Further, the invention relates to a tubular hose attachment which is provided at its one end with a hose coupling for connecting a vacuum cleaner hose and at its other end has a suction opening, wherein the pipe inner diameter of the hose attachment is larger at the hose coupling than at the on-mammal opening. The invention also relates to a vacuum cleaner tube which is equipped at one end with a hose attachment coupling for connection to a tubular hose attachment and which has a suction opening at its other end. Finally, the invention relates to a system comprising at least two elements from the group of elements, comprising: a generic vacuum cleaner hose, a generic tubular hose attachment and a generic vacuum cleaner tube.

State of the art

Vacuum cleaners are known from the prior art, for example the BSGL42223 device marketed under the BOSCH brand, in which a vacuum cleaning unit which can be parked on the floor or can be rolled on the floor generates a negative pressure and is equipped with a suction opening. A vacuum cleaner hose equipped with a corresponding vacuum cleaner coupling can be coupled to the suction opening of the vacuum cleaning unit. At its opposite end of the vacuum cleaner coupling the vacuum cleaner hose is equipped with an attachment coupling to him to a - -

Hose attachment with a suction port to connect. The hose attachment is generally tubular and may be e.g. a cushion brush or a crevice nozzle. In particular, however, can also be connected to the suction opening of the hose attachment a vacuum cleaner tube, which in turn has a suction opening, which, for. wearing a brush. In this case, the hose attachment is generally designed as a handle so that it can be grasped by the hand to guide the vacuum cleaner tube.

Vacuum cleaner hoses are generally cylindrical in shape with a uniform diameter over the entire length of 32 mm. In addition, under the brand SIEMENS a vacuum cleaner with the type designation VS 08 is offered, whose hose is slightly conical, whereby the hose diameter in the area of the attachment coupling is about 32 mm and in the area of the vacuum cleaner coupling about 38 mm.

US Pat. No. 1,892,382 discloses a vacuum cleaner with a vacuum cleaner hose which connects the vacuum cleaner to a hose attachment and whose cross-section increases from the hose attachment to the vacuum cleaner, the cross-sectional increase being substantially uniform over the length of the hose.

The German Utility Model DE 20 2006 002 975 U1 discloses a conical vacuum cleaner hose, wherein the hose is made of hydrolysis and ozone-resistant polyurethane. For production, it is proposed to create a constricted area on an extruded tube by partially holding it.

The German utility model DE 296 17 752 U1 discloses a hose combination of a first hose and a second hose of smaller diameter, which is to be used in particular as a suction hose in a vacuum cleaner. The second tube is attached along a common line of contact to the inside of the wall of the first tube. The first tube widens conically from one end to its other end. - -

Finally, from the German utility model DE 201 18 357 U1 a Hinterschranksaugschlauch known, which has a taper on the side of a suction and is also provided at the end of the suction with a plurality of small holes. With the rear cabinet suction hose, the dust behind cabinets and in cracks can be sucked without the need to move the furniture must be removed.

The problem underlying the invention

The invention has for its object to provide an improved vacuum cleaner hose for connection to a vacuum cleaner unit. You are also the

Object to provide an improved tubular hose attachment for connection to a vacuum cleaner hose and an improved vacuum cleaner tube.

Finally, it is the object of the invention to provide an improved system of at least two elements from the group of elements, comprising: a vacuum cleaner hose, a tubular hose attachment and a vacuum cleaner pipe.

Inventive solution

The object of the invention is achieved in the generic vacuum cleaner hose characterized in that the hose inner diameter of the vacuum cleaner coupling is at least 40 mm. The object is also achieved in the generic tube-like hose attachment in that the pipe inside diameter at the hose coupling of the hose attachment is at least 32 millimeters (mm). Further, the object is achieved in the gettungsgemäßen vacuum cleaner tube in that the pipe inner diameter of the vacuum cleaner tube is larger at the hose attachment coupling than at the suction opening of the vacuum cleaner tube. Finally, the object is achieved by a system which comprises at least two elements from the group of elements, comprising: a generic vacuum cleaner hose whose hose inside diameter at the vacuum cleaner coupling is at least 40 mm, a generic tubular hose attachment whose pipe inside diameter at the hose coupling is at least 32 mm, and a vacuum cleaner pipe, the pipe inside diameter at the hose attachment coupling is larger than at the suction opening of the vacuum cleaner tube. - -

It can be achieved by the invention that the hose attachment can also be handled by the user in vacuum cleaners with a higher suction power, without these handling factors being at the expense of the energy efficiency of the vacuum cleaner. The vacuum cleaner hose according to the invention and / or the hose attachment according to the invention are preferably used with vacuum cleaners which can achieve a suction power of greater than or equal to 54 l / sec, particularly preferably greater than or equal to 50 l / sec.

The invention is based on the consideration that a suction hose is preferably not smooth on its inside, but provided with a wave profile to ensure sufficient flexibility of the suction hose. However, this wave profile can adversely affect the flow behavior in the hose and in particular lead to a relatively high flow resistance at higher suction rates, which in turn can drive the energy required to achieve the required suction in the air. The invention is also based inter alia on the consideration that can be reduced by increasing the diameter of the flow resistance and thus the energy consumption can be reduced. On the other hand, a large hose diameter can affect the handling of the tubular hose attachment, as it can no longer be so easily covered by the hand of a user with larger diameters.

By the invention it is achievable that the vacuum cleaner hose on the one hand has a sufficiently enlarged compared to conventional vacuum cleaners diameter to keep the increased energy expenditure within limits, on the other hand, however, ensures sufficient handling of the hose attachment.

It is a further achievable advantage of the invention that the noise development can be reduced by a flow cross-section which is at least partially enlarged compared to conventional vacuum cleaner hoses and the associated lower flow velocity.

The preferred vacuum cleaner hose has a circular cross-section. In principle, however, vacuum cleaners with a non-circular cross-section are also covered by the invention. In this case is below the diameter of the non-circular - -

Hose cross section to withstand the circle diameter of a hypothetical tube having the same flow resistance.

Preferred embodiment of the invention

Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims.

In a preferred vacuum cleaner hose, the hose inner diameter at the vacuum cleaner coupling is larger than at the attachment coupling. Particularly preferably, the hose inner diameter is smaller at any point than at the attachment coupling. Particularly preferably, the inner tube diameter is not larger at any point than at the vacuum cleaner coupling. By this embodiment of the invention can be achieved that a smaller hose inner diameter on the attachment coupling side of the vacuum cleaner hose is at least partially compensated by a correspondingly larger dust suction clutch side inner diameter. In this way, the top coupling and accordingly also the hose coupling of the article can be kept small and thus the handling can be improved.

Particularly preferably, the hose inner diameter of the attachment coupling of the vacuum cleaner hose to the vacuum cleaner coupling increases substantially steadily, particularly preferably linear. Such a vacuum cleaner hose can allow particularly favorable flow conditions inside the hose. In addition, such an embodiment of the vacuum cleaner hose has also proved to be advantageous from an aesthetic point of view.

In a preferred embodiment of the vacuum cleaner hose according to the invention, the hose inner diameter at the attachment coupling is at least 32 mm. It is an achievable advantage of this embodiment of the invention that the vacuum cleaner hose on conventional and already existing in the market hose attachments with a hose coupling diameter of 32 mm can be formed engageable. The user can thus be enabled to use existing accessories with the new vacuum cleaner hose according to the invention. Manufacturer is the result of the - -

The advantage that no new accessories have to be developed and manufactured for the new vacuum cleaner hose. Particularly preferably, the hose inner diameter is not smaller than 32 mm at any point.

The hose inner diameter of the vacuum cleaner hose to the vacuum cleaner coupling is preferably at least 47 mm. With this measure, it can be advantageously achieved that a smaller hose inner diameter in the area of the attachment coupling, e.g. one

Hose inner diameter of 32 mm, through the hose inner diameter at the

Vacuum cleaner coupling can be sufficiently compensated to keep the total flow resistance in the vacuum cleaner hose sufficiently low even at higher power.

The ratio between the hose inner diameter at the attachment coupling of the vacuum cleaner hose and the hose inner diameter at the vacuum cleaner coupling is according to a particularly preferred embodiment of the invention less than 0.77. With such diameter ratios, the reduced flow resistance with simultaneously increased ergonomics makes itself particularly noticeable.

However, the invention also includes in particular those vacuum cleaner hoses in which the vacuum cleaner hose has a uniform diameter throughout, which is 40 mm or more. It is an advantage of this embodiment of the invention that vacuum cleaner tubes with a uniform diameter can be produced in a particularly simple and cost-effective manner.

The preferred hose length is between 1 m and 5 m, more preferably between 1, 3 m and 3 m, particularly preferably between 1, 6 m and 2 m.

In a tube-like hose attachment according to the invention, the tube inner diameter of the intake opening to the hose coupling increases substantially steadily, particularly preferably linear. As a result, particularly favorable flow conditions in the hose attachment can advantageously be achieved. In order to achieve a particularly low flow resistance, the tube inner diameter of the hose attachment to the hose coupling in a preferred embodiment of the hose attachment is at least 36 mm. Nevertheless, good handling too - -

ensure the tube inner diameter of the hose attachment to the hose coupling is preferably 40 mm or less.

At the suction opening, the pipe inner diameter of the tubular hose attachment is preferably at most 40 mm, particularly preferably at most 36 mm, particularly preferably at most 32 mm, particularly preferably at most 30 mm. This advantageously achieves that the tubular hose attachment at least in the front area of the user's hand well embraced and therefore can be handled safely. With a tube inner diameter of 30 mm can also be advantageously achieved that conventional vacuum cleaner tubes can be connected to the tubular hose attachment, so that users can be enabled to use the new hose attachment with conventional vacuum cleaner tubes and manufacturer no new vacuum cleaner tubes must be offered and manufactured , In this case, it can also be avoided in particular that the manufacturing costs of the vacuum cleaner pipe are greater due to a larger diameter of the vacuum cleaner pipe than in the case of conventional vacuum cleaner pipes.

At the intake of a particularly preferred tubular hose attachment a StaubStaubsaugerrohr can be coupled. However, embodiments of the invention are also included in which the hose attachment e.g. is designed as a upholstery brush or crevice nozzle. Particularly preferably, the hose attachment is designed as a grip part, with which the vacuum cleaner pipe connected thereto can be guided.

In a preferred vacuum cleaner tube, the inner diameter of the end facing away from the hose attachment increases substantially steadily, preferably linearly, to the end which can be coupled to the hose attachment. In order to achieve a particularly low flow resistance, the tube inner diameter of the vacuum cleaner tube to the hose attachment coupling in a preferred embodiment of the vacuum cleaner tube is more than 30 mm. However, to ensure good handling, the pipe inside diameter of the vacuum cleaner hose at the hose attachment coupling is preferably 36 mm or less, more preferably 32 mm or less. - -

At the suction opening of the vacuum cleaner pipe, the pipe inner diameter of the vacuum cleaner pipe is preferably 30 mm. This advantageously achieves that conventional brushes can be connected to the vacuum cleaner tube, so that users can be enabled to use the new vacuum cleaner tube with conventional brushes and no new brushes must be offered and manufactured by the manufacturer.

The vacuum cleaner hose and / or the hose attachment are preferably made of plastic, e.g. made of polyvinyl chloride (PVC), polyethylene (PE) or polyurethane (PU).

Brief description of the figures

The invention will be explained in more detail below with reference to schematic drawings of an exemplary embodiment in further detail.

They show schematically:

1 shows a perspective view of a vacuum cleaning unit, to which a vacuum cleaner hose according to the invention is coupled;

Fig. 2: The course of the inner diameter of a vacuum cleaner hose according to the invention; and

Fig. 3: sketchy and in cross-sectional representation of a tubular hose attachment according to the invention.

Detailed description based on an embodiment

In Fig. 1 is a roll on the floor by rollers not shown rollable unit 1 is shown, which includes a suction motor, also not shown, which can be set by means of an operating switch 2 in function to generate a negative pressure. For this purpose, dust-laden air is generally removed from a suction opening 3 of the vacuum cleaner. - -

unit 1 sucked, passed through one or more dust filters, not shown, and then blown on a grid 4 substantially freed of dust again. The vacuum cleaner hose 5 has a vacuum cleaner coupling 6, with which it is connected to the suction port of the vacuum cleaner unit.

The profile of the inner diameter of the vacuum cleaner hose 5 is shown in Fig. 2. Accordingly, the hose inner diameter D decreases linearly from the top coupling to the vacuum cleaner coupling, the vacuum cleaner hose 5 is thus conical. The hose inner diameter D _E on the attachment coupling 7 is about 32 mm, the hose inner diameter D _A at the vacuum cleaner coupling 6 is about 47 mm. The relationship between length and diameter is not shown to scale in FIG. As is clearly recognizable in FIG. 1, it has a wave-like profile in longitudinal section, which in particular advantageously increases the flexibility of the hose. The length of the vacuum cleaner hose is about 1, 8 m.

In Fig. 3 is sketched and shown in cross-sectional representation of an inventive tube-like hose attachment. It is curved with a radius of about 50 cm and about 25 cm long. The suction opening 9 of the hose attachment 8 has an inner diameter d _Θ of about 30 mm, in the region of the hose coupling 10, with the hose attachment 8 can be coupled to the top coupling 7 of the vacuum cleaner hose 5 by nesting of the two parts, the inner diameter d _a of Hose attachment 8 approx. 36 mm.

The hose attachment is a substantially smooth pipe section. At the suction of the hose attachment a conventional not shown vacuum cleaner tube with an inner diameter of 30 mm can be connected. The hose lug may be gripped by a user from the outside to guide the vacuum cleaner tube.

Due to the conicity of the vacuum cleaner hose and the hose attachment advantageous flow resistance and thus the energy consumption and operating noise are advantageously reduced, while still an ergonomic handling is possible. - -

The features disclosed in the foregoing description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various forms.

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reference numeral

1 vacuum cleaner unit

2 operating switch 3 suction opening

4 grids

5 vacuum cleaner hose

6 Vacuum cleaner coupling

7 Attachment coupling 8 Hose attachment

9 intake opening

10 hose coupling

Claims

- Patent claims 1. A vacuum cleaner hose (5) which at one end with a vacuum cleaner coupling (6) for connecting the vacuum cleaner hose (5) to a suction port (3) of a vacuum generating vacuum cleaner unit (1) and at its other end with an attachment coupling (7) to connect to a Hose attachment (8) is equipped, characterized in that the hose inner diameter of the vacuum cleaner coupling (6) is at least 40 mm. 2. Vacuum cleaner hose (5) according to claim 1, characterized in that the hose inner diameter at the vacuum cleaner coupling (6) is greater than at the attachment coupling (7). 3. Vacuum cleaner hose (5) according to claim 2, characterized in that the hose inner diameter of the attachment coupling (7) for Vacuum cleaner coupling (6) increases substantially steadily. 4. Vacuum cleaner hose (5) according to any one of the preceding claims, characterized in that the hose inner diameter of the attachment coupling (7) is at least 32 mm. 5. Vacuum cleaner hose (5) according to any one of the preceding claims, characterized in that the hose inner diameter of the vacuum cleaner coupling (6) is at least 47 mm. 6. Vacuum cleaner hose (5) according to any one of the preceding claims, characterized in that the ratio between the hose inner diameter of the attachment coupling (7) and the hose inner diameter of the vacuum cleaner coupling (6) is less than 0.77. - - 7. tube-like hose attachment (8) which is provided at one ends with a hose coupling (10) for connecting a vacuum cleaner hose (5) and at its other end a suction port (9), wherein the inner tube diameter of the hose attachment (8) on the Hose coupling (10) is greater than at the suction port (9), characterized in that the Pipe inner diameter of the tubular hose attachment (8) on the hose coupling (10) is at least 32 mm. 8. tube-like hose attachment (8) according to claim 7, characterized in that the tube inner diameter of the tubular hose attachment (8) of the Inlet opening (9) of the hose attachment to the hose coupling (10) increases substantially steadily. 9. tube-like hose attachment (8) according to claim 7 or 8, characterized in that the tube inner diameter of the tubular Hose attachment (8) on the hose coupling (10) is at least 36 mm. 10. tube-like hose attachment (8) according to any one of claims 7 to 9, characterized in that the tube inner diameter of the tubular hose attachment (8) at the suction port (9) of the hose attachment (8) is at most 30 mm. 11. Pipe-like hose attachment (8) according to one of claims 7 to 10, characterized in that on the suction port (9) of the hose attachment a vacuum cleaner tube can be coupled. 12. Pipe-like hose attachment (8) according to one of claims 7 to 11, characterized in that the hose attachment (8) is designed as a handle part, with which the vacuum cleaner pipe connected thereto can be guided. - - 13. A vacuum cleaner tube, which is equipped at one end with a hose attachment coupling for connection to a hose attachment (8) and at its other end has a suction port, characterized in that the pipe inner diameter of the vacuum cleaner tube is larger at the hose attachment coupling than at the suction opening of the vacuum cleaner tube. 14. Vacuum cleaner tube according to claim 13, characterized in that the inner diameter of the hose attachment (8) facing away from the end to the hose attachment (8) can be coupled end substantially steadily increases. 15. A system comprising at least two elements of the group of elements, comprising: a vacuum cleaner hose (5) according to any one of claims 1 to 6, a tubular hose attachment (8) according to any one of claims 7 to 12 and a vacuum cleaner pipe according to claim 13 or 14 ,