EP3930554A1 - Sauggerät mit kanalstück - Google Patents
Sauggerät mit kanalstückInfo
- Publication number
- EP3930554A1 EP3930554A1 EP20706457.7A EP20706457A EP3930554A1 EP 3930554 A1 EP3930554 A1 EP 3930554A1 EP 20706457 A EP20706457 A EP 20706457A EP 3930554 A1 EP3930554 A1 EP 3930554A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- suction device
- channel
- suction
- fan motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 45
- 238000007789 sealing Methods 0.000 claims description 39
- 238000001816 cooling Methods 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 20
- 238000007667 floating Methods 0.000 claims description 12
- 230000001154 acute effect Effects 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 20
- 239000000523 sample Substances 0.000 description 14
- 238000004140 cleaning Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
- A47L5/365—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the vertical type, e.g. tank or bucket type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
- A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
- A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
- A47L7/0019—Details of the casing
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
- A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
- A47L7/0042—Gaskets; Sealing means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/22—Mountings for motor fan assemblies
Definitions
- the invention relates to a suction device, comprising a suction unit device for generating a suction flow, the suction unit device having a fan with a fan motor, a fan holder for holding the fan and / or the fan motor, and a guide device for process air.
- US 2014/0026355 A1 discloses a wet-dry vacuum cleaner.
- WO 2013/139833 A1 discloses a suction unit for a suction machine.
- CH 440 589 discloses a vacuum cleaner with a spiral housing which has a rear end wall inclined to a longitudinal central axis, the spiral housing cross section increasing towards a pipe socket.
- US 2007/0151072 A1 discloses a vacuum cleaner with an exhaust air flow path.
- JP H10-252696 discloses a centrifugal compressor.
- US 2009/0095360 A1 discloses a vacuum cleaner with a plurality of exhaust air output points.
- the invention is based on the object of providing a suction device of the type mentioned at the beginning which can be produced in a simple manner and / or has an optimized fluid sealing structure.
- This object is achieved according to the invention in the suction device mentioned at the outset in that the guide device for process air has a duct piece with at least one duct which is closed on the exhaust air side to the fan, that the duct piece sits on the fan holder, and that the duct piece is attached to the fan or Fan motor is seated.
- the duct piece can be designed to be multifunctional: it initially forms a duct for discharging process air from the fan. Because it is seated on the fan holder as well as on the fan or fan motor, it can be designed as a sealing device which seals the fan or fan motor in a fluid-tight manner from the fan holder. Furthermore, a liquid seal with respect to the fan motor can thereby be achieved in a simple manner. Furthermore, a sealing device can be integrated into the duct piece, which seals a cooling air guide device for the fan motor.
- a floating mounting in particular of the fan motor or the fan, is possible via the duct device.
- vibration decoupling can be achieved and noise can be minimized.
- the duct section results in an optimized, low-resistance air flow, so that an energy-efficient suction operation can be achieved.
- the suction device can be easily manufactured through the channel piece.
- the duct piece can be easily positioned during manufacture with respect to the blower and the multifunctional design means that the number of components required can be kept low.
- the channel piece is designed in one piece and / or the channel piece is made in one piece and / or the channel piece is a unit that can be handled as a whole at least during the manufacture of the suction device and / or the channel piece is made of an elastic material, wel Ches has a fluid sealing function and / or a floating mounting it allows. This keeps the number of components required low.
- the channel piece has a first opening and has a second opening, the second opening being spaced apart from the first opening in the axial direction.
- the first opening and the second opening are directed parallel to one another; the first opening and / or the second opening are oriented transversely and in particular perpendicular to the axial direction; the first opening and / or the second opening are surrounded by a closed wall; the first opening and / or the second opening have a circular cross-section; the fan motor is positioned in the second opening; the fan motor is positioned in at least a partial area of the first opening.
- the channel piece can thus be easily manufactured. Furthermore, during the manufacture of the suction device, it can be manufactured in a simple manner.
- the fan motor is floatingly mounted on the fan holder via the duct piece and / or that the duct piece forms a sealing device for sealing the fan motor, in particular from the fan holder and / or a cooling air guide device for the fan motor.
- a single piece of duct can be used to achieve both a floating mounting of the fan motor and a seal, in particular both with respect to the fan holder and with respect to the cooling air duct.
- the duct piece has a first sub-area which is supported on the fan holder, and wherein the fan motor is supported on the first sub-area, and in particular the first sub-area is positioned between the fan motor and the fan holder in relation to an axial direction.
- the first sub-area surrounds a first opening of the channel piece, and in particular the first sub-area forms a wall which surrounds the first opening in a closed manner.
- the corresponding duct piece can be produced in a simple manner. Furthermore, the corresponding suction device can be easily manufactured.
- the first opening has a first area which forms or at least partially receives an inlet-side connection for process air of the air guiding device for process air to the fan.
- a simple connection of the fan to the air guiding device can thereby be achieved via the duct piece.
- the first opening has a second area in which the fan motor is positioned. This enables simple and optimized positioning between the fan motor and the duct piece to be achieved.
- the second area follows the first area in the axial direction; the second area has a larger cross-sectional area and in particular a larger diameter than the first area; the first sub-area of the duct section has a first contact surface for the fan motor for the axial support of the fan motor in the second area of the first opening; the first sub-area has a second contact surface for the fan motor on the second area of the first opening for radial support of the fan motor; the first contact surface and / or the second contact surface are ring-shaped and in particular circular ring-shaped; the first contact surface and the second contact surface merge continuously.
- the fan is connected to the air ducting device via the duct piece.
- a fluid-tight and also floating mounting of the fan / fan motor can be achieved via the duct piece with respect to the fan holder.
- a cooling air guide device for the fan motor is seen before, wherein the duct piece forms a sealing device for the cooling air guide device.
- no separate sealing device for fluid sealing of the cooling air guiding device then has to be provided.
- a hood is angeord net on the fan motor, at least one channel for guiding cooling air for the fan motor being arranged or formed between the hood and the fan motor.
- the channel piece is designed as a sealing device for fluid sealing between the hood and the fan motor; the channel piece comprises a second partial area which is arranged between a wall of the hood and a wall of the fan motor and forms a fluid seal; the channel piece is designed for floating mounting of the hood on the blower motor.
- a multifunctional channel piece can be provided which also provides a fluid seal for the cooling air guiding device.
- the second sub-area is axially spaced from a first sub-area of the channel piece, which ensures a fluid seal and / or mounting of the fan motor on the fan holder; the at least one channel of the channel piece is formed between the first partial area and the second partial area; the second sub-area is designed as a protruding web, wel cher is immersed in a groove on the fan motor; the web extends at least approximately in the axial direction; the web is ring-shaped and in particular circular; the second portion surrounds a second opening of the channel piece; A portion of the hood is positioned in the second opening.
- a multifunctional channel piece can thus be provided and a fluid seal with respect to the cooling air guide device can be achieved in a simple manner.
- the channel piece has a third partial area which forms a wall of the at least one channel. This allows the air ducting function of the duct piece to be achieved in a simple manner.
- the third sub-area is arranged between a first sub-area of the channel piece and a second sub-area of the channel piece, the first sub-area providing a fluid seal and / or mounting on the fan holder and the second partial area providing a fluid seal and / or mounting of a hood.
- a multi-functional duct piece can be implemented in a simple manner.
- the fan motor forms a further wall of the min least one channel of the channel piece. Via the fan motor and in particular a housing of the fan motor, the at least close a channel. This means that the number of parts can be kept low and assembly is simple.
- the duct piece can be slipped over the fan / fan motor in a simple manner, for example.
- a receptacle which is in particular a ring receptacle, is formed on an inner side of the channel piece between the second partial area and the third partial area. In this way, a corresponding counter-element of the fan / fan motor can be positioned on the recording in order to achieve a secure fixation of the duct section.
- a receptacle such as a groove or a shoulder is formed on an inner side of the channel piece, a wall of the fan motor being arranged on the receptacle. This enables secure fixation between the duct section and the fan motor or fan.
- a fan motor mount is provided on which at least one mount for the duct piece is formed.
- an axial and radial fixation of the fan / the fan motor on a suction head of the suction device can be achieved in a simple manner.
- this also makes it possible to clamp the fan or the fan motor in the suction head, in which case the number of screw elements for fixing the fan / fan motor to the fan holder can be kept low or even no screws are necessary.
- a first receptacle for a web of the channel piece is provided with at least one of the following: the at least one web is arranged on an upper side of the channel piece, which is in particular facing away from the fan holder; the at least one web is arranged on a second portion of the channel piece, which provides a seal to a hood; the at least one web extends in the axial direction; when at least one web is immersed in the receptacle, radial displaceability of the duct piece relative to the fan motor is blocked.
- the channel piece has a paragraph to adapt to the second recording on;
- the shoulder of the duct piece is formed on a first portion, wel cher ensures a seal and / or storage on the fan holder;
- the second receptacle blocks radial displaceability and / or axial displaceability of the fan motor or the fan.
- blower / blower motor This allows the blower / blower motor to be fixed to the suction device in a simple manner.
- a third receptacle which blocks radial displacement and in particular also ensures that the channel piece is pressed in the radial direction.
- An axial sealing device with radial pressure can thereby be achieved via the channel piece. It is particularly advantageous if the channel piece forms a first axial sealing device and a second axial sealing device which is spaced apart from the first sealing device and at least one of the sealing devices is pressed radially.
- the first axial sealing device is used in particular for fluid sealing between a fan holder and the fan / fan motor.
- the second axial sealing device is used in particular to seal a cooling air guide device for the fan motor.
- the duct piece is therefore multifunctional.
- the channel piece has at least one tab and the fan holder is assigned a counter-element for the at least one tab, with the tab fixed on the counter-element blocking a rotational mobility of the channel piece with respect to the fan holder.
- the at least one tab has and the counter-element is a pin for penetrating the opening. This allows the duct piece to be positioned in a simple manner with respect to the fan holder during the manufacture of the suction device.
- the at least one channel of the channel piece has an outlet which opens directly via a pipe element into an outlet for the discharge of process air exhaust air to the surroundings of the suction device.
- Process air exhaust air It is advantageous if the outlet of the at least one channel has a circular cross section. This results in a low-resistance air flow.
- the at least one channel leads around the fan motor. This results in an optimized flow guidance for process air.
- the at least one channel has a path that runs around an axis that is parallel or coaxial with a motor axis.
- the course around an axis means that the path can be represented mathematically in polar coordinates with the motor axis as the pole and a corresponding polar angle.
- the at least one channel has a spiral path, that is to say the at least one channel is designed as a volute.
- a suction head and a suction material container are seen, the suction head being detachably arranged on the suction material container. This allows the suction material container to be cleaned and emptied easily when the suction head is removed.
- the fan motor (and the fan) are arranged on the suction head.
- the suction device has a height axis, a motor axis being oriented at an acute angle to the height axis. This results in an optimized use of space.
- the suction device can be designed as a stand-alone device and in particular as a wet-dry suction device.
- the multifunctional channel piece also enables the fan motor to be sealed against liquids.
- the suction device it is also possible for the suction device to be integrated into a vehicle, for example.
- Figure 1 is a schematic sectional view of an embodiment of a suction device according to the invention.
- FIG. 2 shows a sectional view along the line 2-2 according to FIG. 1;
- FIG. 3 shows an enlarged illustration of area A according to FIG. 1;
- FIG. 4 shows a sectional view along the line 4-4 according to FIG. 3;
- FIG. 5 shows a sectional view along the line 5-5 according to FIG. 3;
- FIG. 6 shows a sectional view along the line 6-6 according to FIG. 3;
- FIG. 7 shows a sectional view along the line 7-7 according to FIG. 3;
- FIG. 8 shows an enlarged illustration of the area B according to FIG. 3;
- FIG. 9 shows an enlarged illustration of the area C according to FIG. 3;
- FIG. 10 shows an embodiment of a channel piece in plan view
- FIG. 11 shows a sectional view along the line 11-11 according to FIG. 10;
- FIG. 12 shows a perspective illustration of the channel piece according to FIG. 12
- FIG. 13 shows a further sectional view of the suction device according to FIG. 1;
- FIG. 14 shows an enlarged illustration of the area D according to FIG. 13;
- FIG. 15 a sectional view along the line 15-15 according to FIG. 13;
- FIG. 16 shows an enlarged illustration of the area E according to FIG. 15;
- FIG. 17 shows a representation similar to that in FIG. 16 in a variant
- FIG. 18 schematically shows a measuring device for determining a
- FIG. 20 An embodiment of a suction device according to the invention, which is shown in the figures and denoted by 20, is formed as a stand-alone suction device.
- the suction device 20 is designed in particular as a wet-dry vacuum cleaner that can suck in liquids and dust.
- the suction device 20 comprises a suction material container 22.
- the suction material container 22 has a base 24 and a wall 26.
- the wall 26 and the base 24 delimit an interior space 28.
- the interior space 28 can accommodate suction material. It is also possible that a suction material bag can be positioned in the interior space 28 (for dry suction operation).
- the suction material container 22 and thus the suction device 20 are designed to be mobile.
- a wheel device 30 is arranged on the suction material container 22.
- a wheel axle 32 is oriented transversely to the drawing plane in FIG.
- a steerable roller 34 is positioned on the suction material container 22 or a plurality of steerable rollers 34 are positioned.
- a suction head 36 is seated on the suction material container 22. The suction head 36 can be removed from the suction material container 22 in order to enable access to the interior space 28, in particular in order to be able to empty and clean the interior space 28.
- a fixing device 38 is provided, via which the suction head 36 can be fixed on the suction material container 22.
- the suction device 20 has a height axis 40 which extends from the suction material container 22 to the suction head 36.
- the height axis 40 lies transversely and in particular perpendicular to the wheel axis 32.
- this height axis is perpendicular to this base 42.
- a suction connection 44 is assigned to the suction material container 22.
- the suction port 44 is positioned on the suction head 36.
- a suction hose 46 can be connected to the suction connection 44.
- a pipe element 46 which is in particular curved, leads from the suction connection 44 into the interior space 28.
- the pipe element 46 has a connecting piece 48 which protrudes into the interior space 28.
- suction connection 44 it is also possible for the suction connection 44 to be arranged directly on the suction material container 22.
- a corresponding opening connection of the suction material bag can be pushed onto the connecting piece 48.
- the suction device 20 comprises a suction unit device 50 for generating a suction flow.
- This suction flow acts on the interior 28 of the Suction material container 22.
- a suction can be achieved via this suction flow.
- the suction flow is applied to the suction connection 44. In Figure 1 it is indicated by a double arrow.
- the suction device 20 has a filter device 52.
- the filter device 52 is arranged such that it can be removed from the suction head 36, for example.
- the filter device 52 has a clean side 54 and a dirty side 56.
- the dirt side 56 faces the interior 28 of the suction material container 22.
- the suction flow flows through the filter device 52 and the suction flow is cleaned by the filter device 52. Starting from the clean side 54 of the filter device 52, the suction flow is not contaminated with dirt.
- a cleaning device 58 for the filter device 52 is arranged on the suction head 36. This allows the filter device 52 to be cleaned. For example, the cleaning device 58 generates blasts of air, which cause dirt particles adhering to the filter device 52 to fall into the interior space 28 of the suction material container 22.
- the suction unit device 50 comprises a fan 60 with a fan motor 62.
- the fan 60 has an impeller 64 which is driven in rotation by the fan motor 62.
- the fan motor 62 has a motor axis 66 which is coaxial with an axis of rotation for the impeller 64.
- the motor axis 66 is oriented at an acute angle 68 to the height axis 40.
- the acute angle 68 is approximately 65 °.
- the motor axis 66 it is also possible for the motor axis 66 to be oriented, for example, parallel to the height axis 40.
- the suction device 20 has a guide device, designated as a whole by 70, for process air.
- This guide device 70 for process air is arranged on the suction head 36. Process air is fed through them to the suction head 36 and discharged as process air exhaust air. This guided process air is air purified by the filter device 52. In the case of wet operation of the suction device 20, it can in principle be exposed to liquid.
- a fan holder 72 is arranged on the suction head 36. This fan holder 72 forms a base plate for fixing the fan motor 62.
- the fan motor 62 is integrated with the fan 60;
- the fan motor 62 and the fan 60 in particular have a common housing 74 in which motor elements such as the stator and rotor are arranged and in which the impeller 64 is arranged.
- the fan holder 72 then holds the fan 60 with the fan motor 62.
- a receptacle 76 for the fan 60 / the fan motor 62 is arranged or formed.
- the guide device 70 for process air has one or more channels 78 which lead from the clean side 54 of the filter device 52 to the fan 60.
- a duct piece 80 is arranged on the fan holder 72 and the fan 60 / the fan motor 62.
- This duct piece 80 has a duct 82 which is connected to the fan on the exhaust air side. Process air exhaust air can be emitted to the surroundings of the suction device 20 via this channel 82.
- the channel piece 80 is arranged and designed so that it is loaded on the input side is positioned in addition to the fan 60. This is explained in more detail below.
- the channel piece 80 is formed in one piece or in one piece. It is designed, in particular, in such a way that during the manufacture of the suction device 20 it is a unit that can be handled as a whole and, in particular, can be fixed as a whole on the suction head 36. It is an object of the channel piece 80 to provide the channel 82 of the guide device 70 for process air for discharging exhaust air.
- the channel piece 80 continues to have a sealing function and also a storage function.
- the material for the channel piece 80 is selected accordingly.
- the channel piece is made from a single material.
- the channel piece is made from a vulcanized rubber material such as EPDM (ethylene-propylene-diene rubber).
- EPDM ethylene-propylene-diene rubber
- the channel piece 80 is made from a thermoplastic elastomer (TPE).
- TPE thermoplastic elastomer
- the duct piece 80 is arranged on the fan holder 72. It is also arranged on the fan 60 / the fan motor 62. Furthermore, a hood 84, which is assigned to the fan motor 62, on the channel piece 80 is arranged.
- the channel piece 80 has a track region 86 on which the channel 82 is formed.
- This path area 86 has a wall 88 which delimits the duct 82 to the outside, from the fan 60 / fan motor 62.
- the channel piece 80 is opposite the wall 88 open.
- Another wall 90 for closing the channel 82 is formed by the fan 60 / the fan motor 62 and thereby by the housing 74.
- the path area 86 has a path course with a course about an axis which is coaxial to the motor axis 66. This is understood to mean that a corresponding path course of the path region 86 is determined by polar coordinates can be represented, the motor axis 66 forming the pole. The corresponding trajectory can be represented by the distance from the pole (from the motor axis 66) and a polar angle.
- the course of the path in the path area 86 is circular.
- a path of the wall 88 is spiral.
- the underlying spiral is, for example, an Archimedean spiral or a logarithmic spiral.
- the track area 86 is then formed in particular as a volute.
- a diameter 92 of the channel 82 steadily widens towards an outlet 94 of the channel piece 80.
- the channel 82 is circular in cross section and the outlet 94 has a circular cross section (see also FIG. 12, for example).
- the channel piece 80 has (compare FIGS. 10 to 12) a first opening 96 and a second opening 100 spaced apart in the axial direction 98.
- the axial direction 98 is coaxial with the motor axis 66.
- the first opening 96 and the second opening 100 are parallel to each other. They are oriented transversely and, in particular, perpendicular to the axial direction 98.
- the first opening 96 and the second opening 100 are each delimited to the outside by the wall 88.
- the channel piece 80 is open inward.
- the channel piece 80 has a first partial area 102.
- the first partial area 102 surrounds the first opening 96 and forms a wall for the first opening 96.
- the channel piece 80 also has a second partial area 104.
- the second partial area 104 surrounds the second opening 100 and forms a wall for the second opening 100.
- a third partial area 106 of the channel piece 80 is arranged between the first partial area 102 and the second partial area 104. This third sub-area 106 forms the wall 88 as an outer wall for the channel 82.
- the first sub-area 102 is supported with a first side 108 (compare, for example, FIGS. 8, 9) on the fan holder 72.
- the fan 60 / fan motor 62 is supported on a second side 110 of the first partial area 102 opposite the first side 108.
- the first sub-area 102 is thereby positioned between the fan 60 / the fan motor 62 and the fan holder 72.
- the channel piece 80 forms a first sealing device via the first sub-area 102. This seals the fan motor 62 / the fan 60 from the duct 82.
- the first opening 96 which is formed by the first partial region 102, is designed as a connection, or receives a connection, via which the duct 82 is closed to the fan 60 on the inlet side with respect to the process air.
- the first portion 102 of the channel piece 80 also provides for a
- the first opening 96 has a first area 112, which ensures the connection of the channel 82 to the fan 60.
- the first opening 96 also has a second region 114, on which the second side 110 lies, and which adjoins the first region 112 in the axial direction 98.
- the second area 114 has a larger diameter than the first area 112.
- a support surface 116 is formed on the second side 110, on which the fan 60 / the fan motor 62 is supported.
- the support surface 116 has a first contact surface 118 and a second surface 120.
- the first contact surface 118 is used to axially support the fan 60 / the fan motor 62 in relation to the axial direction 98.
- the second contact surface 120 also serves to provide radial support in the radial direction transverse to the axial direction 98.
- the first contact surface 118 and the second Contact surface 120 go continuously into one another.
- the corresponding bearing surface which is formed by the first contact surface 118 and the second contact surface 120, is annular.
- the fan 60 / the fan motor 62 is positioned and held in the second area 114.
- the fan 60 / the fan motor 62 with the hood 84 is positioned in the first opening 96.
- the first partial region 102 has a shoulder 122 on its outside.
- the receptacle 76 in the suction head 36 has a (counter) shoulder 124 which is adapted to the shoulder 22 and on which the shoulder 122 of the channel piece 80 rests.
- the counter shoulder 124 forms a second receptacle for the channel piece 80 on the suction head 36.
- the second sub-area 104 has a first web 126, which extends essentially parallel to the axial direction 98 and points in the direction of the second sub-area 104.
- the housing 74 has a groove 128.
- the first web 126 is immersed in this annular groove 128.
- a receptacle 130 is formed on the channel piece 80, which is for example a groove. This receptacle 130 is formed between the first sub-area 102 and the third sub-area 106.
- a wall area 132 of the housing 74 of the fan 60 / of the fan motor 62 is immersed in this receptacle 130, this wall area 132 delimiting the groove 128.
- a wall area 134 of the hood 84 is also immersed in the groove 128, the first web 126 lying between the wall area 134 of the hood 84 and the wall area 132 of the fan 60 / of the fan motor 62.
- the first web 126 and in particular the second sub-area 104 forms a fluid seal between the hood 84 and the fan 60 / the fan motor 62.
- hood 84 it is also possible for the hood 84 to be mounted on the fan 60 / fan motor 62 in a floating manner over the second partial area 104 of the duct section 80.
- a second axial sealing device is formed over the second partial area 104 by the channel piece 80, which ensures an airtight seal between the hood 84 and the housing 74.
- the hood 84 is dome-shaped. In particular, it has an opening 136 coaxial to the motor axis 66 (see FIG. 4).
- a fan wheel 140 which is assigned to the opening 136, is arranged on a shaft 138 of the fan motor 62.
- the fan wheel 140 is in particular spaced apart from the impeller 64.
- the fan wheel 140 rotates about the same axis of rotation as the impeller 64, that is, an axis coaxial with the motor axis 66. Cooling air can thereby be sucked in through the opening 136.
- the opening 136 is in corresponding connection with a connection on the suction head 36, via which cooling air can be sucked in.
- the hood 84 surrounds a partial area of the fan motor 62.
- One or more channels 142 of an air cooling device for the fan motor 62 are formed between it and this partial area.
- Cooling air sucked in through the opening 136 can flow in the channel or channels 142 and thereby flow around a corresponding housing area 144 of the fan motor 62.
- An outlet 146 is arranged on the hood 84, to which a pipe 148 is connected, which leads to an outlet 51 for cooling air on the suction head 36 (compare FIG. 2; in FIG. 2, the guidance of cooling air is indicated by a double arrow in broken lines ).
- a second web 152 or a plurality of second webs 152 are furthermore arranged on the second partial region 104 (compare FIGS. 8, 10, 12). These sit on an upper side of the channel piece 80 and point upwards away from the second partial area 104.
- the second web or webs 152 are oriented at least approximately parallel to the axial direction 98.
- the receptacle 76 on the suction head 36 is assigned a first receptacle 154 (see FIG. 8) into which the second web or webs 152 are at least partially immersed.
- One or more tabs 156 are arranged on the second partial area 104 of the channel piece 80.
- a corresponding tab 156 has an opening 158 (see FIG. 7).
- a counter-element 160 is arranged on the suction head and assigned to the fan holder 72. This is designed in particular as a pin element which is immersed in the opening 158.
- two tabs 156 and correspondingly two counter-elements 160 are provided.
- the channel piece 80 can be positioned non-rotatably with respect to the fan holder 72 by fixing the tabs 156 on the corresponding counter-elements 160 and can thereby be correctly aligned.
- a pipe element 162 leads from the outlet 94 of the duct section 80 to an outlet on the suction head 36, via which process air exhaust air can be emitted to the surroundings of the suction device 20.
- the channel piece 80 with its outlet 94 can open directly into the outlet.
- the channel piece 80 is a multifunctional component, which is implemented in particular in a one-piece component:
- a connection of the fan 60 to the channel 82 is at least partially formed.
- the channel piece 80 forms a first sealing device via the first sub-area 102, via which the fan 60 / the fan motor 62 are sealed in a fluid-tight manner with respect to the fan holder 72. Furthermore, the channel piece 80 ensures that no suction stream containing liquid can reach the fan motor 62.
- the fan 60 / the fan motor 62 is mounted in a floating manner over the first partial area 102 of the duct section 80. In this way, vibration decoupling can be achieved to a certain extent and noise is reduced.
- the first sealing device is in particular an axial sealing device.
- channel piece 80 forms a second sealing device via the second partial area 104, via which the hood 84 is fluid-tight on the
- Fan 60 / the fan motor 62 is mounted.
- the cooling air guide device for cooling the fan motor 62 is fluid-tight.
- the channel piece 80 is posi tioned in particular radially pressed in the receptacle 76.
- the fan 60 / the fan motor 62 is in particular axially clamped.
- a corresponding bracket 162 is provided, which ensures this axial A voltage.
- the blower motor 62 / the blower 60 can thereby be fixed in the suction head 36 in a simple manner.
- the suction device 20 can be manufactured in a simple manner. The result is a space-saving arrangement with a high level of fluid tightness.
- the duct piece 80 is slipped onto the blower 60 with the blower motor 62.
- Effective flow guidance can also be achieved with low flow resistances via the channel piece 80. This results in a high efficiency for the operation of the suction device 20.
- the suction device 20 can be manufactured in a simple and inexpensive manner. The number of components can be minimized due to the multifunctional design of the channel piece 80.
- the suction device 20 comprises a measuring device 164 (in particular FIGS. 13 to 18) for determining a liquid level 166 in the suction material container 22.
- measuring device 164 is designed as a threshold value device which checks whether a certain threshold value for a liquid level 166 has been reached; In a wet-suction operation of the suction device 20, liquid is sucked in and taken up in the suction material container 22. It should be prevented that the suction device 20 is "flooded".
- Threshold value for example, a timely shutdown of suction operation can take place via the measuring device 164.
- the measuring device 164 comprises a probe device 168.
- the probe device 168 has a first flexurally elastic element 170 and a second flexurally elastic element 172.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 are spaced apart from one another in a transverse direction 174, which is in particular parallel to the wheel axis 32.
- the probe device 168 is arranged on the suction head 36.
- the probe device 168 is arranged on the suction material container 22, or is arranged with a first part on the suction head 36 and with a second part on the suction material container 22.
- the arrangement of the probe device 168 completely on the suction head 36 has the advantage that electrical components of the measuring device 164 which are arranged in the suction head 36 can be in permanent electrical contact with the probe device 168. If the probe device 168 is arranged on the suction material container 22, a corresponding electrical contact must be ensured when the suction head 36 is placed on the suction material container 22.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 protrude into the interior space 28 of the suction material container 22 in an operative position when the suction head 36 is placed on the suction material container 22.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 are each designed as a line element 176. It is wire-shaped, rope-shaped or thread-shaped and made from an electrical conductor.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 are each held on a holder 182 of the suction head 36 via a first fixing point 178 and a second fixing point 180.
- the respective flexurally elastic element 170, 172 is freely suspended between the first fixing point 178 and the second fixing point 180.
- the first fixing point 178 and the second fixing point 180 are at the same height, the fixing points 178, 180 for both flexurally elastic elements 170, 172 being at the same height.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 have an arc shape between the respective first fixing point 178 and the second fixing point 180.
- the first fixing point 178 is in the area of a first end 184 of the respective flexible elastic element 170, 172.
- the second fixing point 180 is in the area of a second end 186.
- the corresponding flexurally elastic element 170 is fixed on the holder 162 in that a pin element 188 is arranged in the region of its ends 184, 186, which is fixed on the holder 162 and is, for example, pressed in there.
- the pin element 188 is pressed or glued to the line element 176, for example.
- the first flexible element 170 and the second flexible element 172 extend in the height axis 40 with a point or area 190 which is at a minimum distance from the bottom 24 of the suction material container 22 .
- this area 190 is in particular an apex.
- the area 190 thus defines the
- Threshold value for level detection by measuring device 164 The area 190 is in particular for the first flexurally elastic element 170 and the second flexurally elastic element 172 at the same height in the height axis 40. (Due to the oblique section in FIG. 13, the areas 190 of the flexurally elastic elements 170, 172 appear offset there.)
- the first fixing point 178 and the second fixing point 180 are spaced apart from one another in a direction 192 at a distance 194.
- the direction 192 is transverse to the transverse direction 174 and transverse to the height axis 40.
- the direction 192 is a longitudinal direction of the suction device 20.
- the suction device 20 has a larger dimension in the direction 192 than in the transverse direction 174.
- the distance 194 is in particular at least 2 cm, preferably at least 4 cm, preferably at least 6 cm, preferably at least 8 cm and particularly preferably at least 10 cm.
- the distance 194 is preferably at least 12 cm or at least 14 cm or at least 16 cm.
- the distance 194 can be selected to be as large as a hanging position of the flexible elements 170, 172 protruding into the interior 28 of the suction material container 22 is still possible.
- a variant 196 is indicated in FIGS. 1 and 15 in which the flexurally elastic element has a greater length, that is, the distance 194 is greater than in the embodiment according to FIG.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 each have opposing envelopes spaced in parallel and planar 198a, 198b.
- the line element 176 lies between these envelope planes 198a, 198b.
- the first flexurally elastic element 170 and the second flexurally elastic element 172 are designed to be so rigid that they have a fixed position, namely the starting position, without force influencing. They are so movably arranged and designed that a deflection from this starting position is possible. This is indicated in FIG.
- a starting position 200 is shown there for the first flexurally elastic element 170 and 172.
- the double arrow 202 indicates a deflection with respect to this starting position 200.
- the flexurally elastic elements 170, 172 are arranged and formed in such a way that when they are deflected from the starting position 200 and when the corresponding deflection force ceases, they automatically return to their starting position 200.
- these are resiliently arranged and designed in such a way that they snap back into their starting position.
- the flexurally elastic elements 170, 172 are basically acted upon with dirt-laden liquid. In the process, dirt can settle on the flexible elements 170, 172.
- a flexurally elastic element 170, 172 is moved from the starting position 200 and snaps back via the resilient formation after the deflection has ceased to exist, then incrustations can become detached from the flexurally elastic element 170, 172 (from the line element 176).
- the flexurally elastic elements 170, 172 in the starting position 200 are inclined at an acute angle 204 (see FIG. 13) with respect to the height axis 40, with a distance 206 between the first Flexibly elastic element and the second flexurally elastic element 172 decreases towards the region 190.
- the distance 206 decreases in the direction of the bottom 24 of the suction material container 22.
- the acute angle 204 is in particular related to the envelope planes 198a, 198b.
- This provides an insertion aid when the suction head 36 with the probe device 168 is placed on the suction material container 22.
- first flexurally elastic element 170 and the second flexurally elastic element 172 can be positioned at a relatively large distance in the transverse direction 174 and in particular at the edge on the suction head 36.
- first flexurally elastic element 170 and the second flexurally elastic element 172 are arranged at the same distance in the direction 192. This same distance in the direction 192 is not absolutely necessary for a mode of operation.
- the suction head 36 has on its underside (which faces the bottom 24 of the suction material container 22 when the suction head 36 is placed on the suction material container 22) a mounting surface 208 (see FIG. 1) with a corresponding mounting level.
- a mounting surface 208 see FIG. 1 with a corresponding mounting level.
- first flexurally elastic element 170 and the second flexurally elastic element 172 lie in their starting position 200 on the corresponding installation plane for the installation surface 208 or protrude beyond this. (In principle, they can also be reset to this.) In particular, if the flexible elements 170, 172 protrude in their starting position 200 from the installation level, then they are bent over when the suction head 36 is placed on a base. When the suction head 26 is then lifted, these snap back into their starting position 200. The cleaning effect described occurs as a result.
- the first fixing point 212 lies in the region of an underside of the suction head 36, and the second fixing point 214 lies on the connector 48.
- a flexurally elastic element 170 is fixed to a holder 216 of the suction head 36, a receptacle 218 being arranged on the holder associated with the first fixing point 178 and the second fixing point 180.
- the receptacle 218 has a first part 220 in which a screw is positioned. It has a second part 222 through which the flexurally elastic element 170 is passed.
- the flexurally elastic can be adjusted via the screw in the first part 220
- the receptacle 218 is 8-shaped with respect to its openings.
- the suction device 20 has a control device 224 (FIG. 18) which is arranged in particular in the suction head 36. Via the control device, the fan motor 62 is controlled.
- the controller 224 is in communication with one or more switches.
- the control device 224 controls an optical and / or acoustic display 226.
- the measuring device 164 includes an evaluation circuit 228. This is implemented, for example, in an ASIC.
- a voltage VccProbe_enable is applied via the evaluation circuit 228 between the first flexurally elastic element 170 and the second flexurally elastic element 172 as an application signal.
- a falling voltage Voltage In is measured as a reaction signal.
- first flexurally elastic element 170 and the second flexurally elastic element 172 there is a resistance R_probe due to a medium between them. If there is no liquid between the first flexurally elastic element 170 and the second flexurally elastic element 172, then, idealized, this resistance can be viewed as infinitely large.
- Corresponding measurement signals are given by the evaluation circuit 228 and the control device 224. In one embodiment switches then the control device 224 switches off the suction operation by appropriately applying the blower motor 62.
- a warning message can be given. It is also possible, for example, that when the corresponding threshold value is detected, it is not possible to restart the suction device 20 for suction operation.
- the signal VccProbe_enable which is an application signal, is emitted in a pulsed manner so that a measurement does not take place continuously.
- the signal Voltage In is a corresponding reaction signal and contains at least in digital form the liquid level 166, that is to say whether the threshold value has been reached or not.
- a probe device 168 is provided which is flexible.
- the flexurally elastic elements 170, 172 greatly reduce the risk of breaking off.
- the probe device 168 takes up a relatively small space requirement in the suction material container 22 due to the line elements 176.
- a flexible design helps with the self-cleaning of the flexible elastic elements 170, 172. Incrustations can then easily be broken off.
- the self-cleaning effect can also take place automatically when the suction head 36 is placed on the installation surface 208.
- the first flexurally elastic element 170, 172 are each made of an electrical conductor's rule. They are rope-shaped with a certain inherent rigidity, and they can also be made limp. They are made, for example, of a wire material or of a thread or fiber material with conductive fibers such as carbon fibers.
- the flexurally elastic elements 170, 172 are arranged centrally on the suction device 20 with respect to the direction 192. In particular, they are spaced from one another in the transverse direction 174. orderly. In this way, the reaching of a threshold value for the liquid level can be determined in a simple and reliable manner.
- a flexurally elastic design of the flexurally elastic elements 170, 172 makes it possible to snap back from the starting position 200 for a self-cleaning effect.
- the probe device 168 can be arranged in such a way that, due to the acute angle 204, an insertion aid for placing the suction head 36 on the suction material container 22 is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102019105086.3A DE102019105086A1 (de) | 2019-02-28 | 2019-02-28 | Sauggerät mit Kanalstück |
PCT/EP2020/054388 WO2020173791A1 (de) | 2019-02-28 | 2020-02-19 | Sauggerät mit kanalstück |
Publications (1)
Publication Number | Publication Date |
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EP3930554A1 true EP3930554A1 (de) | 2022-01-05 |
Family
ID=69645973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20706457.7A Pending EP3930554A1 (de) | 2019-02-28 | 2020-02-19 | Sauggerät mit kanalstück |
Country Status (4)
Country | Link |
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EP (1) | EP3930554A1 (de) |
CN (1) | CN113473891A (de) |
DE (1) | DE102019105086A1 (de) |
WO (1) | WO2020173791A1 (de) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH440589A (de) * | 1966-05-18 | 1967-07-31 | Pulipa Ag | Staubsauger |
JP3975501B2 (ja) * | 1997-03-17 | 2007-09-12 | 株式会社Ihi | 遠心圧縮機 |
US6158083A (en) * | 1998-08-31 | 2000-12-12 | Emerson Electric, Co. | Wet/dry vacuum with reduced operating noise |
KR101212291B1 (ko) * | 2005-12-30 | 2012-12-12 | 삼성전자주식회사 | 진공청소기 |
US8261406B2 (en) * | 2007-10-11 | 2012-09-11 | Black & Decker Inc. | Vacuum with multiple exhaust points |
US8297949B1 (en) * | 2009-02-17 | 2012-10-30 | Mancl Scott C | Bearing seal for a wet vacuum motor |
WO2013139838A1 (de) | 2012-03-22 | 2013-09-26 | Alfred Kärcher Gmbh & Co. Kg | Saugaggregat und saugmaschine |
US8997308B2 (en) | 2012-07-24 | 2015-04-07 | Koblenz Electricia S.A. de C.V. | Wet/dry vacuum cleaner |
EP3541258B1 (de) * | 2016-11-15 | 2020-12-30 | Alfred Kärcher SE & Co. KG | Sauger |
DE202018105372U1 (de) * | 2018-09-10 | 2018-10-30 | Berbel Ablufttechnik Gmbh | Vorrichtung zur Muldenabsaugung von auf einem Kochfeld erzeugter Abluft |
-
2019
- 2019-02-28 DE DE102019105086.3A patent/DE102019105086A1/de active Pending
-
2020
- 2020-02-19 WO PCT/EP2020/054388 patent/WO2020173791A1/de unknown
- 2020-02-19 CN CN202080016689.0A patent/CN113473891A/zh active Pending
- 2020-02-19 EP EP20706457.7A patent/EP3930554A1/de active Pending
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WO2020173791A1 (de) | 2020-09-03 |
CN113473891A (zh) | 2021-10-01 |
DE102019105086A1 (de) | 2020-09-03 |
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