EP3866658A1 - Saugmaschine mit schallwinkel - Google Patents
Saugmaschine mit schallwinkelInfo
- Publication number
- EP3866658A1 EP3866658A1 EP18792395.8A EP18792395A EP3866658A1 EP 3866658 A1 EP3866658 A1 EP 3866658A1 EP 18792395 A EP18792395 A EP 18792395A EP 3866658 A1 EP3866658 A1 EP 3866658A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outlet
- machine according
- suction machine
- deflection element
- inlet
- 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 22
- 238000001816 cooling Methods 0.000 claims description 48
- 230000001154 acute effect Effects 0.000 claims description 21
- 238000004140 cleaning Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 4
- 238000005201 scrubbing Methods 0.000 description 4
- 241001417527 Pempheridae Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002775 capsule Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L9/1658—Construction of outlets
Definitions
- the invention relates to a suction machine, comprising a suction unit device with a blower, with a blower motor, and with an exhaust air guiding device for process air, and at least one flow deflection element with an inlet pipe and with an outlet pipe, the outlet pipe being oriented transversely to the inlet pipe.
- the at least one flow deflection element is designed as a sound angle, and the at least one flow deflection element is arranged on the exhaust air guiding device.
- WO 2015/04364 A1 discloses a suction device comprising a blower device for generating a suction air flow and an air guiding device which has at least one flow deflection element with an inlet pipe and an outlet pipe, the outlet pipe being oriented transversely to the inlet pipe.
- a sound mirror device is arranged at a transition area between the inlet pipe and the outlet pipe, on which sound is reflected and / or sound is absorbed.
- WO 2018/068850 A1 discloses a cleaning device comprising
- the at least one noise source and an air guiding device with at least one flow deflection element having a first arm with an inlet pipe and a second arm with an outlet pipe, the outlet pipe is oriented transversely to the inlet pipe, the inlet pipe has an inlet with an extension in one first depth direction and in a first width direction, the outlet pipe has an outlet with a depth in a second depth direction and a width in a second width direction, the first depth direction and the second depth direction are oriented parallel to one another, and the first width direction and second width direction are oriented transversely to one another, the width in the second width direction being at least 1.2 times the depth in the second depth direction.
- DE 10 2008 003 350 A1 discloses a vacuum cleaner with a space for receiving an engine fan.
- EP 2 510 855 A2 discloses a motor arrangement for an electric motor-driven household appliance and cleaning device.
- EP 0 289 987 A2 discloses a vacuum cleaner.
- WO 2005/016107 A1 discloses a vacuum cleaner with a blower capsule.
- US 2005/0022337 A1 discloses a motor housing for a vacuum cleaner.
- EP 1 797 808 A2 discloses a vacuum cleaner with an engine noise reduction system.
- US 2008/0235898 A1 discloses a motor unit for a steam vacuum cleaner.
- DE 196 16 156 CI discloses a vacuum cleaner with a housing, a motor and a fan being mounted in a capsule to dampen vibrations.
- the invention has for its object to provide a suction machine of the type mentioned, which is space-saving and compact with respect to the suction unit device with effective noise reduction.
- this object is achieved according to the invention in that a connecting channel is arranged between a fan outlet and an inlet of the inlet pipe of the at least one flow deflection element, which is connected to the fan outlet and the inlet of the inlet pipe, and in that a length of the connecting duct between the fan outlet and the inlet of the inlet pipe is at least as large as the greatest width of the inlet of the inlet pipe.
- the at least one flow deflection element is designed as a sound angle. It has a sound mirror device which reflects sound and / or absorbs sound. Fluid (in particular process air) flows through the flow deflection element, this flow being deflected at the flow deflection element. At least some of the sound waves are reflected within the flow deflection element. At least some of the corresponding sound waves cannot propagate through an outlet of the outlet pipe, and noise reduction is accordingly achieved.
- a connecting duct is arranged between a fan outlet and the inlet of the at least one flow deflection element, which has a certain length, namely is at least as long as the greatest width of the inlet of the inlet pipe.
- the at least one flow deflection element can be integrated into the suction unit device in a space-saving and compact manner.
- the inlet of the inlet tube has a first extension in a first width direction with a first width, and a second extension in a first depth direction with a first depth as the width in the first depth direction, the first width direction being transverse to the first Is oriented in the depth direction and in particular is oriented perpendicular to the first depth direction, and in particular at least one of the following is present: the inlet has an at least approximately rectangular shape; the first width is greater than the first depth and is in particular at least 1.2 times greater than the first depth; the inlet is oriented transversely to a main flow direction of process air when passing from the connecting channel into the inlet pipe, and in particular the main flow direction is oriented transversely to the first width direction and the first depth direction.
- blower motor forms a source of noise, whereby effective noise reduction can be achieved.
- the corresponding sound angle (the flow deflection element) is designed to be flat, as described in WO 2018/068850 A1. This is expressly referred to. There is a high degree of noise reduction.
- an outlet of the outlet pipe has a first extension in a second width direction with a second width and a second extension in a second depth direction with a second depth, the first width direction being transverse to the second depth direction is and in particular is oriented perpendicular to the second depth direction, and in particular there is at least one of the following: the outlet has an at least approximately rectangular shape; the first width direction and the second width direction are oriented transversely and in particular perpendicular to one another; the first depth direction and the second depth direction are oriented at least approximately parallel to one another; the first depth and the second depth are at least approximately the same size; the second width is greater than the second depth and in particular at least 1.2 times greater than the second depth; the inlet and outlet have the same hydraulic cross-section.
- the length of the connecting channel is at least as large as the first width. It results in a compact and space-saving Effective noise reduction.
- the length of the connecting channel is in particular an arc length.
- the first width direction is parallel to an axis of rotation of the blower motor or is oriented at an acute angle less than or equal to 45 ° to the axis of rotation of the blower motor.
- the corresponding flow deflection element (the sound angle) can be integrated into the suction unit device in a compact and space-saving manner.
- the first depth direction is oriented transversely and in particular perpendicular to an axis of rotation of the blower motor. This results in an effective noise reduction with a space-saving and compact design.
- the connecting duct has at least one of the following: an at least approximately uniform depth as the duct width transverse to an axis of rotation of the blower motor; an at least approximately uniform width across the depth; a width at the inlet of the inlet pipe which corresponds to a width (Bi) of the inlet; a depth at the inlet of the inlet pipe, which corresponds to a depth (Ti) of the inlet.
- connection channel is curved and in particular a center line of the connection channel is in the form of a circular arc.
- a length of the connecting duct between the fan outlet and the inlet of the inlet pipe is then an arc length.
- the length (arc length) of the connecting channel between the fan outlet and the inlet of the inlet pipe is at least 5 cm and preferably at least 10 cm. In a specific embodiment, the length is approximately 13 cm. This results in a space-saving and compact design for the suction unit device with effective noise reduction.
- the fan has at least one outlet channel on which the fan outlet is arranged, the at least one outlet channel having a widening cross section toward the fan outlet.
- This outlet channel is in particular a worm channel or spiral channel.
- the at least one flow deflection element is arranged on the exhaust air guiding device with respect to the fan in such a way that a main flow direction of process air upon entry into the inlet pipe is oriented transversely to an axis of rotation of the fan motor, and a main flow direction of exhaust air upon exit from the outlet pipe is oriented parallel to the axis of rotation or at an acute angle less than 45 ° to the axis of rotation.
- Flow deflection element is arranged on the exhaust air guiding device with respect to the fan such that a deflection of a
- the main direction of flow of process air is from a direction at least approximately parallel to a normal plane, which is perpendicular to an axis of rotation of the blower motor, in a direction transverse to the normal plane.
- the outlet pipe has a central axis which is oriented at an acute angle to an axis of rotation of the blower motor, the acute angle in particular being in a range between 5 ° and 45 °.
- a housing of the suction unit device which in particular is also a tank wall, can then be produced in a simple manner, for example using an injection molding process, without undercut surfaces occurring.
- a trough can thereby be integrated into the at least one flow deflection element, which causes an effective noise reduction.
- the connecting duct and / or an outlet duct of the blower which opens into the connecting duct, surrounds the blower motor and / or an impeller of the blower.
- the blower motor or the impeller of the blower is completely surrounded, if necessary. This enables effective noise reduction with a compact design to be achieved.
- the inlet pipe and the outlet pipe have a common edge at an outside angle region, which extends in a first depth direction.
- Flow deflection element can be rounded at the edge or there can be a sharp edge.
- edge is arranged in a trough in relation to an interior of the at least one flow deflection element.
- a cooling air guide device for the blower motor on which at least one flow deflection element with an inlet pipe and an outlet pipe is arranged, the at least one flow deflection element (on the cooling air guide device) being designed as a sound angle.
- noise reduction can also be achieved with regard to the cooling air flow.
- the combination of flow deflection elements on the exhaust air guiding device and on the cooling air guiding device makes it possible to achieve an effective noise reduction for the suction unit device.
- the suction unit device can be designed in a space-saving and compact manner. There are not any
- the at least one flow deflection element on the cooling air guide device and the at least one flow deflection element on the exhaust air guide device are arranged one above the other. These are preferably arranged in the manner of a stack. This results in a compact and space-saving structure.
- the at least one flow deflection element on the cooling air guide device is arranged lying in relation to an axis of rotation of the blower motor and the at least one flow deflection element is arranged on the exhaust air guide device in an upright position with respect to the axis of rotation. This results in a space-saving and compact structure.
- the corresponding suction unit device can be easily integrated into a receiving tank.
- the outlet pipe of the at least one flow deflection element on the exhaust air guiding device is oriented transversely to the outlet pipe of the at least one flow deflection element on the cooling air guiding device.
- the result is a compact and space-saving structure.
- Flow deflecting element on the exhaust air guiding device is oriented parallel or at an acute angle less than or equal to 45 ° to the inlet pipe of the at least one flow deflecting element on the cooling air guiding device. This results in a space-saving, compact structure.
- an outlet of the exhaust air guiding device which is arranged on the at least one flow deflecting element of the exhaust air guiding device
- an outlet of the cooling air guiding device which is arranged on the at least one flow deflecting element of the cooling air guiding device or is subordinate to it, lie side by side.
- an opening of the outlet of the exhaust air guiding device and an opening of the outlet of the cooling air guiding device lie in one plane.
- Process air at the outlet of the exhaust air routing device are parallel to each other.
- the line path for the cooling air guiding device for the exhaust air guiding device can thereby be kept short. The result is a space-saving and compact structure.
- the suction unit device has a housing in which the connecting channel is arranged and in which the at least one flow deflection element is integrated on the exhaust air guiding device.
- the suction unit device is arranged on a receiving tank. This results in a cable routing with a minimized cable length.
- suction unit device is positioned in a recess on a wall of the receiving tank. This results in a space-saving arrangement.
- a housing wall of the suction unit device forms a wall of a receiving tank or is arranged on a wall of the receiving tank.
- a housing of the suction unit device is then formed by the receiving tank and thereby by a wall of the receiving tank.
- the suction machine is designed in particular as a self-propelled machine and advantageously as a ride-on machine or back-up machine. It has a travel drive motor to enable self-driving.
- the suction machine is designed as a cleaning machine with at least one floor cleaning tool.
- the suction machine is designed, for example, as a scrubber-suction machine or as a sweeper. In principle, it is possible to suck in dirty fluid containing liquid or to suck in dirty fluid that is not liquid.
- the suction machine can also have a sweeping function and a scrubbing function.
- Figure 1 is an isometric view of an embodiment of a
- Suction machine in the form of a scrubbing suction machine as a ride-on machine
- Figure 2 shows an embodiment of a tank for the suction machine according to
- Figure 1 (or also according to Figure 12) with suction unit device arranged thereon;
- FIG. 3 shows an exploded view of the tank according to FIG. 2;
- FIG. 4 shows a side partial sectional view of the tank according to FIG. 3;
- FIG. 5 is an exploded view of the suction unit according to
- FIG. 6 shows a plan view of the suction unit device in its installation situation in the tank
- FIG. 7 shows a sectional view along the line 7-7 according to FIG. 6;
- Figure 8 is a sectional view taken along line 8-8 of Figure 6;
- Figure 9 shows the suction unit in the same view as in Figure 7;
- Figure 10 is a sectional view of the suction unit along the line
- Figure 11 is a sectional view of the suction unit device along the line
- Figure 12 shows another embodiment of a suction machine in the form
- a scrubber-drier which is designed as a back-up machine.
- a first exemplary embodiment of a suction machine 10 which is shown in FIG. 1, is a floor cleaning machine in the form of a ride-on machine.
- the suction machine 10 comprises a chassis 12.
- a rear wheel device 14 with a left rear wheel and right rear wheel (based on a forward travel direction 16) is arranged on the chassis 12.
- a front wheel device 18 is also arranged on the chassis 12.
- Front wheel device 18 in particular comprises a steerable front wheel.
- the suction machine 10 is self-propelled.
- a drive motor for the travel movement of the suction machine 10 is positioned on the chassis 12 (not shown in the drawing).
- a cleaning tool 20 is (at least) arranged on the suction machine 10.
- the cleaning tool 20 is, for example, a scrubbing tool in the case of a scrubber-drier.
- the corresponding cleaning tool 20 is a sweeper. In principle, it is also possible for both one or more sweeping tools and one or more scrubbing tools to be arranged on the suction machine 10.
- the cleaning tool 20 is arranged on the chassis 12 between the front wheel device 18 and the rear wheel device 14.
- a suction unit device 22 is arranged on the chassis 12.
- the suction unit device 22 comprises a blower 24 and a blower motor 26.
- the blower motor 26 drives one or more impellers of the blower 24.
- the blower motor 26 is in particular an electric motor.
- the motor for driving a driving movement of the suction machine 10 can be an electric motor or a fuel motor.
- a suction bar 28 is arranged on the chassis 12 in the region of a rear end of the suction machine 10.
- the suction bar 28 is fluidly connected to the suction unit device 22.
- the suction unit device 22 generates a suction flow with which a surface to be cleaned can be acted upon via the suction bar 28; by means of the suction bar 28 driven by the suction flow of the suction unit device 22, dirty fluid can be extracted from a surface to be cleaned.
- an application device 30 for cleaning liquid is arranged on the chassis 12.
- This application device 30 comprises a tank 32 for cleaning liquid.
- One or more suction nozzles are arranged on the chassis 12 and / or on a holder 34 for the cleaning tool 20, by means of which cleaning liquid can be applied to a floor to be cleaned.
- a receiving tank 36 Arranged on the chassis 12 is a receiving tank 36 which is in fluid communication with the suction unit device 22. Dirty fluid sucked off the floor via the suction bar 28, which can also be liquid-containing, is received in the holding tank 36.
- the suction machine 10 has a structure 38 which is arranged above the rear wheel device 14. In this structure 38 is the receiving tank 36 and the suction unit device 22 is positioned.
- the tank 32 and the loading device 30 are also positioned in the structure 38.
- a steering column 40 is located on the chassis 12 facing away from the body 38 at a front end.
- a steering wheel 42 is arranged on this steering column 40, which acts on the front wheel device 18.
- a driver seat 44 is arranged between the steering column 40 and the body 38.
- the receiving tank 36 (FIGS. 2 to 4) is in particular detachably arranged on the structure 38. It comprises a receiving chamber 46 with a receiving space 48 for dirty fluid.
- the receiving chamber 46 comprises a wall 50.
- a handle 52 is arranged on the wall 50.
- a receiving area 54 On the wall 50 there is also a receiving area 54, which is provided for receiving a float switch for the receiving tank 36.
- a first wall region 56 is arranged on the receiving chamber 46. Furthermore, a second wall region 58 is arranged spaced apart from the first wall region. The first wall area 56 and the second wall area 58 are aligned at least approximately parallel to one another.
- the first wall area 56 and the second wall area 58 are connected via a third wall area 60. This in turn also sits on the receiving chamber 46.
- the first wall area 56 and the second wall area 58 are oriented transversely to the third wall area 60.
- a space 62 is formed between the first wall area 56, the second wall area 58 and the third wall area 60.
- the receiving tank 36 can be positioned and fixed on the chassis 12 via the first wall area 56 and the second wall area 58 and possibly also via the third wall area 60.
- a suction hose 64 leads from the suction bar 28 to the suction unit device 22, this suction hose 64 being fixed to the receiving tank 36.
- a recess 66 (see FIG. 3, for example) is formed on the wall 50 of the receiving chamber 46 facing the space 62.
- the recess 66 is (hollow) dome-shaped.
- the suction unit device 22 is positioned in this recess 66.
- the recess 66 is delimited by a wall 68.
- the wall 68 is part of the wall 50 of the receiving chamber 46.
- the suction unit device 22 has a housing 70. This housing 70 is at least partially formed by the wall 68.
- An outside of the housing 70 is thereby an inside of the receiving tank 36, that is to say it points to the receiving space 48.
- the suction unit device 22 has a connection 72 for process air.
- This connection 72 is arranged in particular on the housing 70.
- This connection 72 is in fluid-effective connection with the receiving space 48 of the receiving tank 36 via one or more channels. Suction air can be applied to the receiving space 48 via the connection 72.
- a float is associated with the receiving tank 36.
- a filling level of the holding tank 36 determines the position of the float.
- the float triggers a float switch which is arranged on the receiving area 54. The triggering of the float switch leads to a warning display or to a switching off of the suction unit device 22 (by switching off the blower motor 26). This prevents (a large amount of) liquid from being sucked in at the connection 72.
- the suction hose 64 opens into the receiving space 48.
- the blower motor 26 has an axis of rotation 74.
- the blower motor 26 drives the rotation (at least) of an impeller 76 about this axis of rotation 74.
- the impeller 76 is positioned in the housing 70.
- An outlet duct 80 (see FIG. 10) is arranged in the housing 70 on a pressure side of the suction unit device 22, starting from a space 78 in which the impeller 76 is positioned.
- the outlet duct defines a blower outlet 82.
- the outlet duct 80 assigns a connection to the space 78 the blower outlet 82 has an expanding cross section.
- the outlet channel 80 has a first boundary wall 84, which is circular-cylindrical, and an opposite second boundary wall 86, which has the shape of a cylinder spiral, the axis of rotation 74 being in the center of this cylinder spiral and the second boundary wall 86 being formed parallel to the axis of rotation 84 .
- a connecting channel 88 is arranged in the housing 70 (cf. FIG. 10). This connecting duct 88 is connected to the blower outlet 82 to the outlet duct 80. The connection duct 88 opens away from the fan outlet 82 into an inlet 90 of a flow deflection element 92.
- the connecting duct 88 is curved between the fan outlet 82 and the inlet 90 of the flow deflection element 92. It has a first boundary wall 94, which is circular cylindrical. It also has an opposing second boundary wall 96, which is also circular cylindrical. The second boundary wall 26 is a continuation of the second boundary wall 86 of the outlet channel 80. The second boundary wall 96 is a wall of the housing 70.
- the first boundary wall 94 also forms the second boundary wall 96 for the outlet duct 80 in a partial area, starting from the connection of the outlet duct 80 to the space 78.
- a center line 98 of the connecting duct 88 between the fan outlet 82 and the inlet 90 is in the form of a circular arc.
- the connecting duct 88 has in particular a uniform cross section between the fan outlet 82 and the inlet 90.
- a depth D of the connecting channel 88 in a direction transverse to the axis of rotation 74 along the center line 98 is uniform (cf. FIG. 10).
- the Depth D of the connecting duct 88 corresponds in particular to the corresponding depth at the blower outlet 82.
- a height (as width) G of the connecting channel 88 (cf. FIG. 8) is preferably perpendicular to the depth D over the center line 98 of the
- Blower outlet 82 is uniform to inlet 90 of flow deflecting element 92.
- the width (height) G of the connecting duct 88 preferably corresponds to the corresponding width of the blower outlet 82.
- the flow deflection element 92 has an inlet pipe 100 which is connected to the connecting channel 88 via its inlet 90.
- the inlet pipe 100 has in particular a straight extension. It also has an outlet pipe 102, which is connected to the inlet pipe 100 and is oriented transversely to the inlet pipe 100. An outlet 104 is formed on the outlet pipe 102.
- the outlet pipe 102 in particular has a straight extension.
- the inlet 90 on the inlet pipe 100 has a depth Ti transverse to the axis of rotation 74 (cf. FIG. 10). This depth Ti lies in a first depth direction 106 which, as mentioned, is oriented transversely to the axis of rotation 74. The depth Ti is a width in the first depth direction 106.
- the inlet 90 of the flow deflection element 92 also has a width Bi (cf. FIG. 9) in a first width direction 108.
- the first width direction 108 is oriented transversely to the first depth direction 106.
- the width G of the connecting channel 88 corresponds in particular to the width Bi at the inlet 90.
- the depth D of the connecting channel 88 corresponds in particular to the depth Ti at the inlet 90.
- the inlet 90 of the flow deflection element 92 has in particular an at least approximately rectangular shape.
- the outlet pipe 102 of the flow deflection element 92 has a second width B 2 in a second width direction 110.
- the second width direction 110 is oriented perpendicular to the first width direction 108 (cf. FIG. 9).
- the outlet 104 has a second depth T 2 in a second depth direction 112 (cf. FIG. 10).
- the second depth direction 112 is parallel to the first depth direction 106.
- the outlet 104 in particular has an at least approximately rectangular shape.
- a channel device 114 is formed over the outlet channel 80, the connecting channel 88 and the inlet pipe 100, which encloses the space 78 and thus the impeller 76.
- the channel device 114 completely surrounds this space 78. It surrounds this space 78 in particular in an angular range, based on the axis of rotation 74, of at least 360 °.
- the connecting channel 88 has a length L (as the arc length) between the fan outlet 82 and the inlet 90 of the flow deflection element 92, which is at least as large as the width Bi in the first width direction 108.
- the length L is a length along the center line 98.
- this length L is at least 5 cm and preferably at least 10 cm. In a specific embodiment, this length is 13 cm.
- the flow deflection element 92 is designed as a sound angle, which comprises a sound mirror, on which sound is reflected and / or sound is absorbed.
- the flow deflection element 92 is designed as a “flat sound angle”, in which the width Bi is greater than the depth Ti and in particular is at least 1.2 times greater than the depth Ti.
- width B 2 is larger than the width T 2 and in particular by
- inlet tube 100 and outlet tube 102 have a common edge 116.
- This edge 116 can be “sharp” or rounded.
- a trough 118 is formed on this edge 116.
- This trough within the flow deflection element 92 forms a depression opposite the inlet 90, which acts as a “sound trough” in order to achieve effective noise reduction.
- This sound depression can have one or more straight or curved boundary walls.
- the suction machine 10 has an exhaust air guide device 120 for process air. Exhaust air process air can be removed from the suction machine 10 via this exhaust air guide device.
- the duct device 114 is part of this exhaust air guide device 120 for removing process air.
- the flow deflection element 92 is connected to this exhaust air guiding device 120 or can be regarded as part of it.
- the duct device 114 is arranged and designed such that exhaust air (exhaust air process air) which enters the flow deflection element 92 at the inlet 90 from the connecting duct 88 has a main flow direction 122 which is oriented transversely to the axis of rotation 74.
- Flow deflection element 92 - with noise reduction - is deflected, process air exiting at outlet 104 with a main flow direction 124, which is transverse and in particular perpendicular to main flow direction 122.
- the main flow direction 124 is parallel to the axis of rotation 74 or lies at a small acute angle, which is in particular less than 45 °, to the axis of rotation 74.
- the main flow direction 122 is parallel or at a small acute angle to a normal plane to the axis of rotation 74.
- the main flow direction 124 is transverse to this normal plane.
- the flow deflection element 92 is integrated in the housing 70 and in particular an integral part of the latter.
- an outside of the flow deflection element 92 forms an inside of a tank wall, that is to say it points into the space 78.
- the flow deflection element 92 which is arranged on the exhaust air guiding device 120, is inclined with respect to the axis of rotation 94 by a small acute angle 126, which is in particular in the range between 5 ° and 45 °.
- a central axis 128 of the outlet pipe 102 lies at an acute angle 126 to the axis of rotation 74.
- Such an arrangement has advantages in the production of the housing 70 by means of injection molding in connection with the trough 118. In this way, an undercut surface can be avoided.
- the acute angle 126 is in particular designed such that a
- Boundary wall 130 on the trough 118 (cf. FIG. 9) is aligned parallel to the axis of rotation 74 or lies at an acute angle to it. This avoids the undercut area.
- An acute angle 132 between the boundary wall 130 of the outlet pipe 102 on the trough 118 and a continuation of a boundary wall 134 of the outlet pipe 102 in the region of the outlet 104 therefore specifies the acute angle 126.
- the exhaust air guiding device 120 has an outlet 134. This outlet 134 opens into the space 62 (cf. FIG. 2).
- the outlet 134 coincides with, or is spaced from, the outlet 104 of the outlet pipe 102.
- a pipe piece 136 is connected between the outlet 104 of the flow deflection element 92, on which the outlet 134 is seated.
- the outlet 134 is arranged on an underside 138 of the housing 70 and lies, for example, on an envelope plane 140 of this underside 138.
- the suction unit device 22 also has a cooling air guide device 142.
- the suction unit device 22, and in particular the blower motor 26, is provided with cooling air via the cooling air guide device 142.
- the cooling air guide device 142 comprises an inlet 144 (cf. FIG. 2) which opens into the space 62. Cooling air can be coupled into the cooling air guide device 142 via the inlet 144.
- the cooling air guide device 142 further comprises an outlet 146, via which (heated) cooling air can be coupled out of the cooling air guide device 142.
- the outlet 146 also opens into the room 62.
- the outlet 146 is arranged next to the outlet 134 of the exhaust air guiding device 120.
- mouths of the outlet 146 and the outlet 134 lie in the same plane and in this case in particular at the envelope plane 140.
- a main flow direction of cooling air as it exits the outlet 146 is at least approximately parallel to a main flow direction of exhaust air process air as it exits the outlet 134.
- An impeller 148 is assigned to the cooling air guide device 142. This impeller is rotatable about the axis of rotation 74, the rotation being driven by the blower motor 26. In particular, impeller 148 rotates in synchronism with impeller 76.
- the impeller 148 drives a flow of cooling air through the cooling air guiding device 142 between the inlet 144 and the outlet 146.
- a receiving area 150 for the impeller 148 is arranged in the housing 70.
- the cooling air guide device 142 has a channel device 152 through which cooling air can be driven.
- the duct device 152 is designed in such a way that cooling air can flow past corresponding areas of the blower motor 26 to cool it.
- the cooling air guide device 142 comprises a flow deflection element 154, which is designed as a sound angle.
- This flow deflection element 154 has an inlet pipe 156 and an outlet pipe 158, which are oriented transversely to one another.
- the flow element 154 is basically designed as a sound angle, as described in WO 2018/068850 A1 or WO 2015/043641 A1.
- the flow deflection element 154 can be designed, for example, as a flat sound angle (see FIGS
- the flow deflection element 154 provides for a sound reduction when cooling air flows through the cooling air guide device 142.
- the flow deflection element 154 is arranged "lying".
- a central axis 160 of the input pipe 156 is oriented transversely to the axis of rotation 74.
- a central axis 162 of the output pipe 158 which is in particular perpendicular to the central axis 160, is also oriented transversely to the axis of rotation 74.
- the flow deflection element 92 is arranged upright (with respect to the axis of rotation 74); the outlet pipe 102 is positioned parallel or at a small acute angle with respect to the axis of rotation 74.
- the channel device 152 is integrated in the housing 70.
- the housing 70 is closed towards the underside 138 by a cover 164.
- the cover 164 projects beyond the recess 66 into the space 62 (cf. FIG. 2).
- the inlet 144 sits on the lid 164.
- the outlet 146 is at least partially arranged on the cover 164.
- the lid 164 includes a first region 166 on which the inlet 144 is arranged. A part of the channel device 152 is formed in the first region 166.
- the suction machine 10 works as follows:
- the blower motor 26 drives the rotation of the impeller 76 and the axis of rotation 74.
- a suction flow is generated. This acts on the receiving space 48 of the receiving tank 36. This is in fluid-effective connection with the suction bar 28. Dirty fluid, which is in particular water-borne, can thereby be sucked in.
- Process air as exhaust air which is not or only slightly exposed to liquid, in particular during normal operation of the suction machine 10, is discharged via the exhaust air guide device 120.
- the flow deflection element 90 is arranged on the exhaust air guiding device 120 as a sound angle. This includes a sound mirror through which sound is reflected and / or sound is absorbed. A part of the corresponding becomes within the flow deflection element 92 Sound waves reflected. This can then not propagate to the outlet 134 and noise reduction is achieved accordingly.
- the flow deflection element 154 is arranged on the cooling air guide device 142. This is also designed as a sound angle and reduces noise.
- the flow deflection element 92 and the flow deflection element 154 are stacked with respect to the axis of rotation 74, that is to say arranged one above the other.
- the flow deflection element 92 and the flow deflection element 154 are integrated in the housing 70 of the suction unit device 22.
- This housing 70 is in particular part of the receiving tank 36 and forms an “inner” wall of the receiving chamber 46 of the receiving tank 36.
- the connecting duct 88 between the fan outlet 82 and the inlet 90 of the flow deflection element 90 is designed such that its length L is at least as large as the width Bi of the inlet 90.
- the result is a compact structure with effective noise reduction.
- the suction unit device 22 can be integrated as a whole into the receiving tank 36 in a simple manner.
- the suction unit device 22 and thereby the blower motor 26 can be encapsulated in a noise-reduced manner via the housing 70 with the flow deflection element 92 and also with the flow deflection element 154. Soundproofing materials are not necessary. As mentioned, a results
- a suction unit device can be formed in which the
- Flow deflection element 92 is nestled against the housing 70 and is in particular connected to it in one piece.
- Exhaust process air can be removed at the outlet 134, which is at least approximately parallel to the axis of rotation 74.
- the solution according to the invention can be used if dirty fluid is liquid. It can also be used when the dirty fluid is not liquid.
- FIG. 12 Another exemplary embodiment of a suction machine is shown in FIG. 12 and designated 170 there.
- This suction machine 170 is designed as a back-up machine. An operator runs behind a rear 172 of the suction machine 170. He does not travel with it.
- the suction machine 170 is provided with a suction unit device 174, which is basically of the same design as the suction unit device 22.
- the suction unit device 174 is integrated in the receiving tank and one or more flow deflection elements corresponding to the flow deflection element 92 and the flow deflection element 154 are provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2018/078713 WO2020078564A1 (de) | 2018-10-19 | 2018-10-19 | Saugmaschine mit schallwinkel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3866658A1 true EP3866658A1 (de) | 2021-08-25 |
Family
ID=63963032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18792395.8A Pending EP3866658A1 (de) | 2018-10-19 | 2018-10-19 | Saugmaschine mit schallwinkel |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3866658A1 (de) |
| CN (1) | CN112867422B (de) |
| WO (1) | WO2020078564A1 (de) |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665332B2 (ja) | 1987-05-06 | 1994-08-24 | 株式会社日立製作所 | 電気掃除機 |
| JP3047984B2 (ja) * | 1990-04-18 | 2000-06-05 | 株式会社日立製作所 | 電気掃除機 |
| DE4100858A1 (de) | 1991-01-14 | 1992-07-16 | Siemens Ag | Staubsauger mit einem geblaeseaggregat |
| JPH0520095U (ja) * | 1991-08-28 | 1993-03-12 | 株式会社伸興 | クリーナヘツドの消音カバー |
| DE19616156C1 (de) | 1996-04-23 | 1997-10-02 | Fakir Werk Gmbh & Co | Staubsauger |
| US5813085A (en) | 1997-02-25 | 1998-09-29 | White Consolidated Industries, Inc. | Motor isolation gasket for central vacuum |
| JP3584704B2 (ja) * | 1997-10-24 | 2004-11-04 | 昭和風力機械株式会社 | 送風機の吸込流予旋回制御バイパス構造 |
| KR100382485B1 (ko) * | 2000-10-05 | 2003-05-01 | 엘지전자 주식회사 | 원심형 송풍기 |
| KR100420518B1 (ko) * | 2001-08-28 | 2004-03-02 | 엘지전자 주식회사 | 팬하우징 |
| US7144219B2 (en) * | 2003-06-13 | 2006-12-05 | American Standard International Inc. | Cutoff for fan or blower |
| US7614113B2 (en) | 2003-07-31 | 2009-11-10 | Panasonic Corporation Of North America | Motor enclosure for a vacuum cleaner |
| DE10336828B4 (de) * | 2003-08-11 | 2013-04-18 | BSH Bosch und Siemens Hausgeräte GmbH | Staubsauger mit Abluftströmungskanälen |
| DE10336827A1 (de) | 2003-08-11 | 2005-03-10 | Bsh Bosch Siemens Hausgeraete | Staubsauger mit einer Gebläsekapsel |
| JP4028872B2 (ja) * | 2004-11-05 | 2007-12-26 | 三星光州電子株式会社 | モータ組立体の排気装置及びこれを含む掃除機 |
| KR100725515B1 (ko) | 2005-12-15 | 2007-06-08 | 삼성광주전자 주식회사 | 모터 소음저감구조를 갖는 진공청소기 |
| JP2008212500A (ja) * | 2007-03-07 | 2008-09-18 | Toshiba Corp | 電気掃除機 |
| KR100813539B1 (ko) | 2007-04-02 | 2008-03-17 | 한경희 | 집진용기 및 이를 사용한 스팀진공청소기 |
| JP2009100840A (ja) * | 2007-10-22 | 2009-05-14 | Panasonic Corp | 電動送風機およびそれを用いた電気掃除機 |
| DE102008003350B4 (de) | 2008-01-08 | 2011-05-19 | Miele & Cie. Kg | Staubsauger mit einem Raum zur Aufnahme eines Motorgebläses |
| DE102011001035B4 (de) * | 2010-03-05 | 2022-09-08 | Vorwerk & Co. Interholding Gmbh | Selbsttätig verfahrbares Saug- und/oder Kehrgerät sowie Abstandssensor |
| DE102011007205A1 (de) | 2011-04-12 | 2012-10-18 | BSH Bosch und Siemens Hausgeräte GmbH | Motoranordnung für ein elektromotorisch angetriebenes Haushaltsgerät und Reinigungsgerät |
| US10570928B2 (en) * | 2013-03-15 | 2020-02-25 | Regal Beloit America, Inc. | Centrifugal blower assembly and method for assembling the same |
| FR3008490B1 (fr) | 2013-07-10 | 2015-08-07 | Snecma | Dispositif pour l'inspection d'une surface d'une piece electriquement conductrice |
| CN103423203B (zh) * | 2013-08-29 | 2015-12-02 | 中联重科股份有限公司 | 离心风机和道路清扫车 |
| CN105593534B (zh) * | 2013-09-26 | 2019-08-23 | 阿尔弗雷德·卡赫欧洲两合公司 | 具有声音反射装置的抽吸设备 |
| CN109843134B (zh) | 2016-10-12 | 2021-03-30 | 阿尔弗雷德·卡赫欧洲两合公司 | 清洁设备和用于制造清洁设备的方法 |
-
2018
- 2018-10-19 WO PCT/EP2018/078713 patent/WO2020078564A1/de not_active Ceased
- 2018-10-19 CN CN201880098622.9A patent/CN112867422B/zh active Active
- 2018-10-19 EP EP18792395.8A patent/EP3866658A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN112867422B (zh) | 2023-05-09 |
| CN112867422A (zh) | 2021-05-28 |
| WO2020078564A1 (de) | 2020-04-23 |
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