DE102014210149A1 - Hose device for transporting a fluid for a household appliance, apparatus for a household appliance, household appliance and method - Google Patents

Abstract

The present invention provides a hose device (1) for transporting a fluid for a household appliance (27), with a smooth tube (5) and a corrugated tube (6), which is adapted to prevent buckling of the smooth tube (5).

Description

The present invention relates to a hose device for transporting a fluid for a household appliance. Furthermore, the invention relates to a device for a household appliance. Furthermore, the invention relates to a household appliance. Moreover, the invention relates to a method for producing a hose device.

For example, this describes DE 196 50 861 A1 a safety device against flooding. This comprises a housing which has a channel which is connectable on the one hand with a fresh water connection and on the other hand with an inner tube. The inner tube is designed as a smooth tube and surrounded by an outer tube, which is designed as a corrugated tube. In the event of a leak in the inner tube leakage water enters the annular gap between the outer tube and the inner tube and flows towards a collection area of the household appliance. In the collecting area, a sensor is arranged, which detects the leakage water and controls valves within the housing for closing the channel. Accordingly, no further water from the fresh water connection can get into the inner tube, so that a flood is avoided.

The EP 2 314 752 B1 provides a corrugated tube instead of the inner tube designed as a smooth tube. This is kink-resistant than the smooth hose and therefore preferable in such cases, in which the inner tube comprehensive outer tube is guided along narrow radii, as is occasionally required for certain kitchen lines or even for the transport of the household appliance with a space-saving placement of the Wasserzuführschlauchs.

With regard to the latter approach, it has been found that noise can occur when, in particular, large amounts of water flow through the inner corrugated hose. This is the case, for example, when entering a washing machine or dishwasher.

An object of the present invention is therefore to provide an improvement with respect to the problem described above. In addition, it is generally the object of the present invention to provide an improved hose assembly for transporting a fluid for a home appliance, an improved home appliance appliance, an improved home appliance, and an improved method of manufacturing a hose assembly.

This object is achieved by a hose device for transporting a fluid. The hose device comprises a smooth hose and a corrugated hose. The corrugated tube is designed to prevent buckling of the smooth tube.

It thus creates a unit that combines the advantages of smooth and corrugated hose. The flowing through the smooth tube fluid causes only minimal noise. At the same time a high kinking stability is achieved due to the corrugated hose.

In the present case, a "smooth hose" means a hose with a longitudinally constant, in particular annular cross-section. This in contrast, in particular to a corrugated hose whose wall is formed wave-shaped.

In the present case, a "corrugated tube" is understood to mean a tube whose wall has a wave-shaped geometry in the longitudinal direction. The waveform can be rounded or square. A helical wave geometry is conceivable.

"Longitudinal", "longitudinal", "axial", "radial", "eccentric" or "circumferential direction" in the present case refers to a longitudinal axis (in the extended state) or curve along which the hose device (in particular the smooth hose and the hose) Corrugated hose) extends. The smooth hose and the corrugated hose can be arranged coaxially.

In the present case, a "fluid" is to be understood as meaning a liquid, in particular water (for example fresh water, waste water or rinsing liquor), fuel, brake fluid, oil or another operating medium for a motor vehicle, or a gas, in particular water vapor, air or another gas.

The hose device may be designed to be suitable in particular for the following applications: household appliances, in particular water-conducting household appliances, such as a washing machine or a dishwasher, motor vehicles, in particular in the field of fuel supply, the line of brake fluid, the management of resources for the exhaust gas treatment, such as ammonia. In general, the invention is intended for applications in which a low-noise transport of a fluid by means of a line is desired, and the line should also have a high kink resistance.

According to one embodiment, the corrugated tube is extruded onto the smooth tube.

By "extruding" is to be understood in the present case that at least the corrugated tube is produced in the extrusion process and is bonded cohesively to the smooth tube. The cohesive connection can be done by melting the corrugated tube to the smooth tube. In particular, troughs of the corrugated hose can be fused to the outside of the smooth hose. "Melting" here means that the temperature of the corrugated hose is so high that its material enters into a cohesive connection with the smooth hose when the corrugated hose is brought into contact with the smooth hose or these are pressed against each other. "Melting" here also includes the case of fusing, ie, that the smooth hose and the corrugated hose are each brought to a temperature or in the context of the extrusion process already at the appropriate temperature, in which their materials flow into one another and thus form a material connection. The cohesive connection can also be achieved using a filler material, ie adhesive.

According to one embodiment, the smooth tube runs inside the corrugated tube.

That is, the smooth tube extends longitudinally within the corrugated tube. Preferably, the smooth tube and the corrugated tube are arranged coaxially, wherein an eccentric arrangement is possible. In other words, the extruding of the corrugated tube to the smooth tube does not have to take place along the entire circumference of the smooth tube. However, an extrusion of the corrugated tube on the entire circumference of the smooth tube is a preferred embodiment.

According to a further embodiment, the corrugated hose has alternating wave troughs and wave crests, wherein the wave troughs are connected to the outside of the smooth hose, in particular connected in one piece.

This results in a stable and easy-to-manufacture construction. In this case, "one-piece" means that the corresponding elements are formed from one piece and from the same material.

Thus, it follows that the corrugated tube in the longitudinal direction sections (wave troughs), in which it is in particular integrally connected to the outside of the smooth tube, and to alternating sections (wave crests), in which it is spaced from the outside of the smooth tube.

According to a further embodiment, a cavity is formed between a respective wave crest of the corrugated tube and the outside of the smooth tube. The cavity may be filled with air. Furthermore, a vent may be provided. For example, a vent may be provided in the form of an axial channel which extends along the smooth tube and connects the cavities with the environment in an air-conducting manner.

According to one embodiment, the smooth tube is guided so tightly inside the corrugated tube that the corrugated tube prevents buckling of the smooth tube.

The corrugated tube serves as a support tube for the smooth tube. "Tight" also includes the case that wave troughs of the corrugated tube bear against the inside against an outside of the smooth tube. However, according to this embodiment, there is a mobility of the smooth tube relative to the corrugated tube.

The buckling of the smooth tube is prevented, for example, in a smooth tube made of polyethylene, polypropylene or polyvinyl chloride whose outer diameter between 5 and 20 mm and the wall thickness between 0.5 and 1.2 mm, when the gap between zero and 3mm (both sides of the smooth tube ) is. Preferably, the outer diameter is between 7 and 13 mm, and the gap (on both sides of the smooth tube) between zero and 2mm. However, these values are by no means to be considered as limiting. Rather, depending on the situation or the application, the person skilled in the art will suitably dimension the outside diameter of the smooth tube and the gap in order to bring about the desired kinking stability.

According to a further embodiment, the smooth hose and the corrugated hose are formed from the same material or different materials.

By forming the smooth tube and the corrugated tube from the same material, a simple manufacturing process can be ensured. In particular, one and the same corrugator with associated die can be used to produce the smooth tube and the corrugated tube.

On the other hand, the use of different materials for the smooth hose and the corrugated hose has the advantage that the properties of different materials can be optimally utilized for each application. For example, the smooth tube may thus be formed from a chemically stable material which is able to withstand the fluid carried in the smooth tube, thus resulting in a long service life. The corrugated hose can again be formed from a material which is advantageous and / or inexpensive in view of the desired kinking stability. In particular, the corrugated hose can be formed from an elastic material, for example an elastomer. Further, the corrugated hose from a regenerated material, so recycled plastic, especially recycled polyethylene or polypropylene, be made, which is inexpensive. The smooth hose is preferably made of a plastic allowed for drinking water, in particular polyethylene or polypropylene.

According to a further embodiment, the smooth hose and / or the corrugated hose are formed from polyethylene, polypropylene and / or polyvinyl chloride (PVC).

In principle, however, the smooth hose and / or the corrugated hose can also be formed from any desired plastic or natural rubber. In particular, all polyolefins come as a material for the smooth tube and / or corrugated tube into consideration.

According to a further embodiment, an outer tube is provided, wherein the smooth tube and the corrugated hose together form an inner tube arranged within the outer tube.

Thus, the outer tube and the inner tube extend in the longitudinal direction and can be arranged coaxially or eccentrically.

The outer tube may for example have an outer diameter between 10 to 40mm. The inner tube may for example have an outer diameter of 5 to 30 mm.

According to a further embodiment, the inner tube is a pressure hose and the outer tube is a protective tube.

In other words, the inner tube is adapted to withstand the pressure of the fluid. Typically, such pressures may be 0.5 to 15 bar. On the other hand, the outer tube has the function of protecting the inner tube from external influences, in particular damage.

According to a further embodiment, a leakage receiving space for receiving leakage from the inner tube is formed between the inner tube and the outer tube.

Should the inner hose become leaky, as may be the case for example due to overpressure, or should a connection between the inner hose and a connecting piece, on which the inner hose is seated, leak, escaping leakage in the leakage receiving space may be absorbed and arrested be prevented from escaping into the environment. For example, the leakage receiving space may be connected to a catchment area, in particular a collecting trough, for example in a household appliance.

According to another embodiment, an electrical cable extends between the inner tube and the outer tube.

In the present case, an "electrical cable" is understood to mean a cable which comprises at least one stranded wire. The strand is preferably made of conductive metal, for example copper, aluminum or another conductor. In the present case, a "stranded wire" in particular comprises a conductor with a circular cross section as well as a flat strip. The electrical cable may also comprise two or more strands. Furthermore, the electrical cable can have a cable tube which envelopes one or more strands individually or in total. The cable tube may be formed as electrical insulation. The electrical cable preferably extends longitudinally between the inner and outer tubes.

Furthermore, a device for a household appliance is provided. The device comprises a channel for transporting a fluid, a valve for shutting off or releasing the channel and a hose device as described above. The smooth hose is sealingly connected to the channel.

In other words, with the valve open (release of the channel), fluid can flow through the smooth tube and through the channel. Such devices may be configured to prevent flooding in the home appliance area. In particular, the device can be set up to supply fresh water to a carcass of the domestic appliance during normal operation. In the event of a fault, ie in the event of a leak, the valve blocks the channel, so that no further fresh water from the corresponding fresh water connection can flow into the inner tube. Flooding is thus prevented. "Fresh water connection" here also includes a cistern, by means of which rainwater is provided.

According to one embodiment, the at least one electrical cable of the hose device is electrically coupled to the valve.

By means of the electric cable, the valve, in particular a control device thereof, can be acted upon with a sensor and control signal.

Alternatively or additionally, a power supply of the valve, in particular a coil thereof, can be provided via the electrical cable. The valve is in particular an electromagnetic valve, wherein a valve element for closing the channel is electromagnetically actuated.

According to a further embodiment, the device further comprises a sensor for detecting leakage fluid and a control device which is adapted to control the valve for shutting off or releasing the channel in response to a signal from the sensor.

The sensor may be configured to detect the presence of leakage fluid. In addition, the sensor may be configured to detect a certain filling level of the leakage fluid, for example in a collecting trough or the like. If the leakage fluid runs from the leakage receiving space into the drip pan, in particular of the domestic appliance, then this leakage fluid is detected there by the sensor. Due to the signal generated by this, the valve of the device is shut off to block the channel, so that no additional fluid can flow through the channel in the inner tube.

Furthermore, a household appliance is provided with a hose device as described above or a device as described above.

The household appliance is in particular a water-conducting domestic appliance, in particular a dishwasher or a washing machine.

Furthermore, a method for manufacturing a hose device as described above is provided. Thereafter, the corrugated tube is provided on the smooth tube so that a buckling of the smooth tube is prevented.

According to one embodiment, the corrugated tube is extruded onto the smooth tube.

According to one embodiment, the smooth tube and the corrugated tube are each extruded and then melted together.

The smooth tube and the corrugated tube may have a temperature of, for example, between 150 ° and 250 °, preferably 180 ° to 220 ° when extruding. If they are pressed against each other in this still hot state, they melt together.

According to a further embodiment, the corrugated tube is first extruded as a smooth tube and then provided by means of jaws with a wave geometry.

The mold jaws can be conveyed continuously, for example by means of mold jaws circulating on a circular path, so that continuous production of the corrugated hose is possible.

According to one embodiment, the smooth tube and the corrugated tube are produced simultaneously by means of the same corrugator.

In particular, the smooth tube and the corrugated tube are produced by means of the same die, which has corresponding openings. Through the openings, the hot raw material (melt) is pushed through. The "die" is also referred to as nozzle. The smooth tube and the corrugated tube can be produced by means of different matrices.

According to a further embodiment, the smooth tube is provided so tightly within the corrugated tube, that a buckling of the smooth tube is prevented.

In particular, the smooth tube can be produced by extrusion. The corrugated tube is then also produced in the extrusion process to the smooth tube. The production preferably takes place on the same production line. For this purpose, the corrugated hose is produced, for example, by means of an annular nozzle around the smooth hose - with the mentioned gap. This is done with a distance to the nozzle, which produces the smooth tube, so that the corrugated tube has sufficient time to cool, so it can not come to a melting of the corrugated tube to the smooth tube.

Alternatively, the smooth tube and the corrugated tube can also be made separately. The smooth tube is then drawn into the corrugated tube.

Further possible implementations of the invention also do not include the explicitly mentioned combination of features and embodiments described above or below with regard to the exemplary embodiments. The expert will add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the embodiments of the invention described below. In addition, the invention is based on preferred Embodiments with reference to the accompanying figures explained in more detail.

1 shows in a side view a hose device;

2 shows a section II-II 1 ;

3 shows a view III 1 ;

4 - 6 show several process steps for producing the hose device according to the 1 - 3 ;

7 shows a perspective view of a device for a household appliance and dashed lines indicates a household appliance;

8th partially shows a longitudinal section 1 ;

9 shows in a longitudinal section a hose device according to another embodiment; and

10 shows a method step for producing the hose device 9 ,

In the figures, the same reference numerals designate the same or functionally identical components, unless stated otherwise.

1 shows a side view of a hose device 1 according to one embodiment. The 2 shows a section II-II, 3 a view III from 1 ,

The hose device 1 includes an outer tube 2 , which is designed as a corrugated hose. Alternatively, the outer tube could 2 also be designed as a smooth tube. To the outer tube 2 may be in one piece a socket or tulip shape 3 whose function will be explained later.

Inside the outer tube 2 extends an inner tube 4 , as in 2 to see. The inner tube 4 is made up of a smooth hose 5 and a corrugated hose 6 together. The corrugated tube 6 is on the smooth hose 5 extruded onto. This procedure is in the 4 - 6 illustrated in more detail.

4 shows a schematically indicated corrugator 7 which is a nozzle 8th with extrusion openings 9 . 10 includes. Through the extrusion openings 9 . 10 becomes hot raw material 11 (Melt) pressed. With the raw material 11 it may be, for example polyethylene, polypropylene or PVC.

Accordingly arise behind the nozzle 8th two coaxial smooth tubes 5 . 6 ' , The corresponding longitudinal axis is with 12 designated. Also an eccentric arrangement of the smooth tubes 5 . 6 ' with respect to the longitudinal axis 12 is conceivable. This would be a correspondingly different arrangement of the extrusion openings 9 . 10 require.

In an in 5 shown, downstream step is now the smooth tube 6 ' by means of mold baking 13 perpendicular to the longitudinal direction 12 pressed. The 4 and 5 show an example of a mold baking 13 which is a wavy (serrated) geometry 14 includes which of the wave geometry to be generated 15 ( 5 ) of the corrugated tube to be produced 6 equivalent.

It can be several mold jaws 13 be used, which circulate on a circular path, so that a continuous production of the corrugated hose 6 is guaranteed.

As in the 5 and 6 Shown are troughs 16 of the corrugated tube 6 in contact ( 5 ) with the outside 17 the smooth tube 5 and merge with this. This results according to the embodiment, a one-piece inner tube 4 ,

According to another embodiment could for the smooth tube 5 and the corrugated hose 6 a different raw material 11 can be used, such as in 10 indicated (see raw materials 11 and 11 ' ). In this case, the troughs can 16 also on the outside 17 melted and thereby secured. But a bonding using a filler material is conceivable.

As in further 6 to recognize, are the troughs 16 alternating with wave crests 18 arranged. A respective wave mountain 18 defined together with the outside 17 a cavity 19 , The cavity 19 is designed in particular as a filled with air, closed annular space. This allows the kink stability of the corrugated hose 6 be improved.

Now returning to 2 is further shown there that in between the inner tube 4 and the outer tube 2 defined gap, in particular annular gap 20 , an electrical cable 21 is guided. The electric cable 21 extends parallel to the longitudinal axis 12 , This results according to the embodiment that the longitudinal axis 12 of the inner tube 4 eccentric with respect to a longitudinal axis 22 of the outer tube 2 is arranged.

The electric cable 21 can, for example, two strands 23 which consist of a cable tube 24 , in particular of insulating material, are surrounded. The strands 23 may be configured to transmit an electrical signal. The electrical signal may be a signal from a sensor or a control signal. Furthermore, by means of the strands 23 a power supply can be guaranteed.

The gap 20 forms - regardless of whether the electrical cable 21 is provided or not - a leakage receiving space. Will the inner tube 4 leaking, it may be a fluid carried therein, such as water, in the form of a leak, in the leakage receiving space 20 penetrate. The outer tube 2 But then stops a further advance of the leakage in the environment.

In particular, in the smooth tube 5 a fluid can be passed under pressure. Accordingly, the inner tube forms 4 a pressure hose off. In contrast, the outer tube is used 2 preferably as protection for the inner tube 4 and is accordingly a protective tube.

Due to the smooth inside 25 the smooth tube 5 In this fluid, in particular water, brake fluid, fuel, a means for fuel treatment, in particular ammonia, or other equipment, in particular for a household appliance or a motor vehicle, flow virtually turbulence-free and thus quiet. The corrugated tube 6 By contrast, it ensures a high kink stability of the inner tube 4 , Corresponding to the corrugated hose 6 due to its wave geometry kink-resistant.

Both the wave geometry of the corrugated tube 6 as well as the outer tube 2 may be sinusoidal or angular, in particular rectangular. Also a helical geometry is conceivable.

The 7 and 8th now illustrate a concrete application of the hose device 1 in a device 26 , The device 26 is part of a dashed and highly schematically indicated water-conducting household appliance 27 , which is in particular a dishwasher or a washing machine. The device 26 serves, on the one hand, the household appliance 2 Normally with fresh water from a house-side fresh water connection (not shown) to supply and to avoid flooding in case of failure, as will be explained in more detail below.

The device 26 includes a locking device 28 and the hose device 1 as described above.

The locking device 28 has a housing 29 which has a in 7 and 8th shown channel 30 includes. 8th illustrates a longitudinal section along a longitudinal axis 31 which is coaxial with the longitudinal axis 12 of the inner tube 4 is arranged. Returning to 7 is shown there that the channel 30 an inlet side 32 at which he by means of a mother 33 or another coupling means with the fresh water connection is sealingly connectable.

As in 8th illustrated, the channel points 30 furthermore a discharge side 34 on which he is inside a connecting piece 35 is formed. Between the inlet side 32 and the discharge side 34 is the channel 30 by means of a valve 36 which is in the housing 29 is integrated, lockable and can be opened. The valve 36 is preferably designed as an electromagnetic valve and has to a coil 37 on, by means of which a closing element 38 to lock or unlock the channel 30 is adjustable.

An end 39 of the inner tube 4 is in a mounting direction 40 over the connecting piece 35 pushed. The end 39 is preferably one end of the smooth tube 5 , which without the corrugated hose 6 is formed. This can be done, for example, by being in the area of the end 39 the corrugated hose 6 is subsequently removed. This removal can be done by chipless cutting, such as laser cutting. The end 39 For example, by means of a hose clamp 41 on the connecting piece 35 secured. The connecting piece 35 Can hook on the outside 42 which provide a better grip as well as a better seal between the end 39 and the connecting piece 35 to care.

The thimble or tulip shape 3 of the outer tube 2 can be on a corresponding geometry 43 of the housing 29 be deferred, which on the one hand a solid connection and on the other hand, a sealing closure is created.

The electric cable 21 can go directly to the valve 36 be guided and connected to this electrically. In particular, the electrical cable 21 also with a control device 44 , whose function will be explained in more detail below, be connected. Alternatively, the electrical cable 21 on the periphery 45 of the housing 29 by means of a male-female connection to the with 46 designated point with an already in the housing 29 provided electrical cable or other electrical connection.

The leakage receiving space 20 is with a drip tray 47 of the household appliance 27 fluidly connected. If there is a leak, the leakage fluid flows into the drip pan 47 , In the drip tray 47 is a sensor 48 arranged, which the presence of leakage fluid and / or a level height thereof in the drip pan 47 detected. When a predetermined threshold value is exceeded, the sensor sends 48 a sensor signal to the control device 44 , In response to the sensor signal then controls the controller 44 the sink 37 which in turn is the closing element 38 to lock the channel 30 actuated. The drip tray 47 is in a corpus 49 of the household appliance 27 arranged.

9 shows in a longitudinal section a hose device 1 according to a further embodiment. This differs from that according to the 1 - 3 in that the corrugated tube 6 not on the smooth hose 5 cohesively attached, in particular extruded, is. Rather, the smooth tube 5 in the corrugated hose 6 so tightly guided that a buckling of the smooth tube 5 is prevented. For this purpose, an outer diameter D _{G of} the smooth tube 5 for example, 6-9 mm, the wall thickness 0.6-0.9 mm and a gap S between an inner side of a respective wave trough 16 of the corrugated tube 5 and the outside 17 the smooth tube 5 on both sides of the same (coaxial arrangement of smooth hose 5 and corrugated hose 6 ) 0.5 to 1mm. The smooth hose 5 may be made of polyethylene, polypropylene or PVC, for example. With regard to the material and dimensioning of the corrugated hose 6 there is greater freedom. It is advisable to choose the material and the dimensioning so that the corrugated hose 6 itself does not kink and has the required flexibility. In particular, an outer diameter D _{W of} the corrugated hose 5 9-14 mm (this corresponds to the outer diameter of the inner tube 4 ). The corrugated tube 5 can also be made of polyethylene, polypropylene or PVC.

An outer diameter D _{A of} the outer tube 3 may be 15 to 35 mm, for example. Also the outer tube 3 can be made of polyethylene, polypropylene or PVC, for example.

10 illustrates a method step for manufacturing the hose device 1 out 9 ,

Unlike in the 4 - 6 shown method is the corrugated tube 6 associated smooth hose 6 ' by means of a ring nozzle 8th' in the extrusion process from a raw material 11 ' generated. The ring nozzle 8th' is a cooling line 50 from the nozzle 8th spaced the smooth tube 5 produced by extrusion. The ring nozzle 8th' in the conveying direction 51 is subordinate to the in the 4 and 5 shown mold baking 13 provided, which from the smooth hose 6 ' the corrugated tube 6 generated as described above. Because of that, due to the cooling distance 50 the smooth tube 5 has cooled sufficiently, there is no fusion of smooth hose 5 and corrugated hose 6 , The corrugated tube 6 points after the forming process by means of the mold baking 13 the gap S with respect to the smooth tube 5 on. Advantageously, this results in a continuous production of smooth hose 5 and corrugated hose 6 on a production line. The raw materials 11 . 11 ' can, depending on the application, be chosen the same or different.

Alternatively, the smooth tube 5 and the corrugated hose 6 each also separately, ie be produced on different production lines. The smooth hose 5 is then drawn into the corrugated hose.

The hose device 1 according to the 9 and 10 may instead of the hose device 1 according to the 1 - 3 at the device 26 or the household appliance 27 according to the 7 and 8th be provided. For this purpose, in particular the corrugated hose 6 cut short to the end 39 the smooth tube 5 expose. Then the end 39 on the connecting piece 35 deferred and by means of the clamp 41 secured.

Although the invention has been described herein with reference to preferred embodiments, it is not limited thereto, but variously modifiable.

For example, the electrical cable could 21 in an axial, ie in the direction of the longitudinal axis 12 , extending groove in the corrugated hose 6 extend. The groove is open on the outside, leaving the electrical cable 21 can be inserted in this.

LIST OF REFERENCE NUMBERS

1

 hose means

2

 outer tube

3

 tulip shape

4

 inner tube

5

 smooth hose

6

 corrugated hose

6 '

 smooth hose

7

 corrugator

8th

 die

9

 extrusion opening

10

 extrusion opening

11

 raw material

12

 longitudinal axis

13

 forming jaw

14

 shaft geometry

15

 shaft geometry

16

 trough

17

 outside

18

 Wellenberg

19

 cavity

20

 Coil / leakage accommodation space

21

 electrical cable

22

 longitudinal axis

23

 braid

24

 umbilical cord

25

 inside

26

 contraption

27

 household appliance

28

 locking device

29

 casing

30

 channel

31

 longitudinal axis

32

 supply side

33

 mother

34

 outfeed

35

 spigot

36

 Valve

37

 Kitchen sink

38

 closing element

39

 The End

40

 mounting direction

41

 hose clamp

42

 hook

43

 geometry

44

 control device

45

 periphery

46

 Job

47

 drip tray

48

 sensor

49

 corpus

50

 cooling section

51

 conveying direction

D _A

 Outer diameter of the outer tube

D _G

 Outer diameter of the smooth tube

D _W

 Outer diameter of the corrugated tube

S

 gap

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

• DE 19650861 A1 [0002]
• EP 2314752 B1 [0003]

Claims (15)

Hose device ( 1 ) for transporting a fluid for a domestic appliance ( 27 ), with: a smooth hose ( 5 ) and a corrugated hose ( 6 ), which is adapted to a buckling of the smooth tube ( 5 ) to prevent. Hose device according to claim 1, wherein the corrugated hose ( 6 ) to the smooth hose ( 5 ) is extruded. Hose device according to claim 2, wherein the corrugated hose ( 6 ) alternating troughs ( 16 ) and wave mountains ( 18 ), the troughs ( 16 ) with an outside ( 17 ) of the smooth tube ( 5 ), in particular integrally connected, are. Hose device according to claim 1, wherein the smooth hose ( 5 ) so tightly within the corrugated tube ( 6 ) is guided, that the corrugated hose ( 6 ) a buckling of the smooth tube ( 5 ) prevented. Hose device according to one of claims 1 to 4, wherein the smooth hose ( 5 ) and the corrugated hose ( 6 ) of the same material ( 11 ) or different materials ( 11 . 11 ' ) are formed. Hose device according to one of claims 1 to 5, wherein the smooth hose ( 5 ) and / or the corrugated hose ( 6 ) are made of polyethylene, polypropylene and / or polyvinyl chloride. Hose device according to one of claims 1 to 6, further comprising an outer tube ( 2 ), whereby the smooth hose ( 5 ) and the corrugated hose ( 6 ) together within the outer tube ( 2 ) arranged inner tube ( 4 ) form. Hose device according to claim 7, wherein the inner tube ( 4 ) a pressure hose and the outer hose ( 2 ) is a protective tube. Hose device according to claim 7 or 8, wherein between the inner tube ( 4 ) and the outer tube ( 2 ) a leakage receiving space ( 20 ) for receiving a leakage from the inner tube ( 4 ) is formed. Hose device according to one of claims 7 to 9, wherein an electrical cable ( 21 ) between the inner tube ( 4 ) and the outer tube ( 2 ) runs. Contraption ( 26 ) for a household appliance ( 27 ), with: a channel ( 30 ) for transporting a fluid, a valve ( 36 ) for shutting off or releasing the channel ( 30 ), and a hose device ( 1 ) according to one of claims 1 to 10, wherein the smooth tube ( 5 ) sealing with the channel ( 30 ) connected is. Household appliance ( 27 ) with a hose device ( 1 ) according to one of claims 1 to 10 or a device ( 26 ) according to claim 11. Method for producing a hose device ( 1 ) according to one of claims 1 to 10, wherein the corrugated hose ( 5 ) on the smooth hose ( 6 ) is provided that a buckling of the smooth tube ( 6 ) is prevented. Method according to claim 13, wherein the corrugated hose ( 6 ) to the smooth hose ( 5 ) is extruded. The method of claim 13, wherein the smooth tube ( 5 ) so tightly within the corrugated tube ( 6 ) is provided that a buckling of the smooth tube ( 6 ) is prevented.

Images