CN221285605U - Suction device for household dust collector and household dust collector comprising same - Google Patents
Suction device for household dust collector and household dust collector comprising same Download PDFInfo
- Publication number
- CN221285605U CN221285605U CN202323326976.1U CN202323326976U CN221285605U CN 221285605 U CN221285605 U CN 221285605U CN 202323326976 U CN202323326976 U CN 202323326976U CN 221285605 U CN221285605 U CN 221285605U
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- absorbing element
- sound
- air
- motor
- compartment
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- 239000000428 dust Substances 0.000 title description 5
- 238000005192 partition Methods 0.000 claims description 34
- 239000011148 porous material Substances 0.000 claims description 16
- 239000006260 foam Substances 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 description 30
- 239000002699 waste material Substances 0.000 description 16
- 229920005830 Polyurethane Foam Polymers 0.000 description 6
- 239000011496 polyurethane foam Substances 0.000 description 6
- 230000001413 cellular effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
-
- 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
- A47L5/362—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the horizontal type, e.g. canister or sledge 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Electric Suction Cleaners (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
Suction apparatus for a household cleaner, and a household cleaner including the same, comprising: a main housing (12) defining an inner compartment (13); a suction motor (17) comprising a fan (19) and a motor (21); and a sound absorbing element (25) arranged in the inner compartment (13), the sound absorbing element (25) extending around the motor (21) and dividing the inner compartment (13) into a first compartment (26) in which the motor (21) is arranged and a second compartment (27) in which the fan (19) is arranged, and the air outlet (23) opening into the first compartment. The sound absorbing element (25) is configured such that when the motor (21) is in operation, at least a portion of the air flow exiting the air outlet (23) and flowing into the first compartment (26) passes through the sound absorbing element (25) and into the second compartment (27).
Description
Technical Field
The present utility model relates to the field of household cleaners which allow to suck up dust and waste present on a surface to be cleaned (which may be, for example, a tile, parquet, laminate, carpet or floor mat).
Background
Document CN104997463 describes a household vacuum cleaner comprising suction means comprising, inter alia:
A main housing defining an interior compartment and comprising at least one air inlet opening in the interior compartment,
A suction motor arranged in the inner compartment and comprising an air inlet fluidly connected with the at least one air inlet and at least one air outlet opening in the inner compartment, the suction motor comprising a fan and a motor having a motor shaft and configured to drive the fan in rotation, the suction motor being configured to generate an air flow through the at least one air inlet and the air inlet,
An air-discharge circuit comprising an inner envelope perforated and extending around the motor, an outer envelope perforated and extending around the inner envelope, a vertical air-discharge duct in which the perforations provided on the outer envelope open, a horizontal air-discharge duct fluidly connected to the vertical air-discharge duct, and an air-discharge opening through which the air flow generated by the suction motor is discharged to the outside of the suction device, and
-A sound absorbing element arranged in the inner compartment and extending around the motor, the sound absorbing element being made of porous material and being located on a support wall extending perpendicular to the motor shaft of the motor.
When the suction motor is operated, the air flow generated by the suction motor flows in sequence into the first annular space defined by the motor and the inner envelope, then into the second annular space defined by the inner envelope and the outer envelope, then into the vertical air discharge duct and the horizontal air discharge duct, and finally through the air discharge opening.
This arrangement of the suction device creates a great turbulence downstream of the air outlet, so that a turbulent air flow flows through the air discharge circuit. Accordingly, the air flowing through the suction device generates loud noise, and the suction motor generates loud noise, which causes discomfort to the user.
Disclosure of utility model
The present utility model aims to overcome all or part of these disadvantages.
The technical problem underlying the present utility model is in particular to provide a suction device that is structurally simple and economical, while limiting the noise generated by such a suction device.
To this end, the utility model relates to a suction device for a household vacuum cleaner, comprising:
A main housing defining an interior compartment and comprising at least one air inlet opening in the interior compartment,
A suction motor arranged in the inner compartment and comprising an air inlet fluidly connected with the at least one air inlet and at least one air outlet opening in the inner compartment, the suction motor comprising a fan and a motor having a motor shaft and configured to drive the fan in rotation, the suction motor being configured to generate an air flow through the at least one air inlet and the air inlet,
-An air discharge circuit comprising at least one air discharge opening provided on the main housing, through which air flow generated by the suction motor is discharged to the outside of the suction device; and an air discharge conduit fluidly connecting the inner compartment with the at least one air discharge port, an
-A sound absorbing element made of porous material and arranged in the inner compartment, the sound absorbing element extending around the motor and dividing the inner compartment into a first compartment in which the motor is at least partially arranged and a second compartment in which the fan is arranged, the at least one air outlet opening in the first compartment.
The sound absorbing element is configured such that at least a portion of the airflow exiting the at least one air outlet and flowing into the first compartment passes through the sound absorbing element and into the second compartment when the motor is in operation.
This arrangement of the sound absorbing element creates a load loss in the suction device, which reduces the flow rate of the air flow in the suction device. Furthermore, the presence of the sound-absorbing element also allows to homogenize the air flow flowing downstream of the suction motor, in particular in the air discharge circuit. This reduction in the flow rate of the air flow and the homogenization of the air flow allow to reduce the turbulence in the suction device and thus the noise generated by the air flow flowing in the suction device.
Furthermore, the sound absorbing element allows to reduce noise originating from a plurality of moving parts of the suction motor, in particular the fan and the motor, taking into account the sound absorbing properties of the sound absorbing element.
The special configuration of the suction device according to the utility model thus allows to significantly reduce the noise generated by the air flow through the suction device and by the suction motor.
The suction device may also have one or more of the following features, alone or in combination.
According to one embodiment of the utility model, the sound-absorbing element has a plate-like overall shape. For example, the sound absorbing element may have a substantially rectangular shape.
According to one embodiment of the utility model, the sound absorbing element is a sound absorbing foam.
According to one embodiment of the utility model, the sound absorbing element is made of a porous material with open cavities.
According to one embodiment of the utility model, the sound-absorbing element is sound-absorbing porous and is advantageously made of a sound-absorbing porous material.
According to one embodiment of the utility model, the sound absorbing element comprises a first face facing the fan and a second face opposite to the respective first face, the first and second faces of the sound absorbing element being substantially parallel.
According to one embodiment of the utility model, the sound absorbing element is configured such that when the motor is in operation, at least a portion of the air flow that has passed through the sound absorbing element and into the second compartment passes through the sound absorbing element again and into the air discharge duct. This configuration of the sound absorbing element allows to further reduce turbulence in the suction device and thus to further reduce the noise generated by the suction device.
According to one embodiment of the utility model, the sound absorbing element extends radially around the motor. In other words, the sound absorbing element extends substantially perpendicular to the motor shaft.
According to one embodiment of the utility model, the sound absorbing element extends to a plurality of inner walls of the main housing. This configuration of the sound absorbing element allows to absorb the noise generated by both the fan and the motor, thereby further reducing the noise generated by the suction device.
According to one embodiment of the utility model, the sound absorbing element comprises a plurality of outer edges configured to abut against a plurality of inner walls of the main housing, respectively.
According to one embodiment of the utility model, the main housing comprises a first hood and a second hood, which are fixed to each other and delimit an inner compartment.
According to one embodiment of the utility model, the sound absorbing element has a shape complementary to the shape of the portion of the main housing where the sound absorbing element is provided, for example, a shape complementary to the shape of the first hood or the second hood. This configuration of the sound absorbing element allows to further reduce the noise generated by the suction device.
According to one embodiment of the utility model, the first compartment and the second compartment are separated from each other by a sound absorbing element.
According to one embodiment of the utility model, the sound-absorbing element comprises a motor through opening into which the motor, in particular a motor housing of the motor, is inserted.
According to one embodiment of the utility model, the sound absorbing element comprises an inner circumferential surface defining the motor passage opening and configured to cooperate with an outer circumferential surface of a motor housing of the motor. This configuration of the sound absorbing element allows to absorb an additional portion of the noise generated by the motor, thereby further reducing the noise generated by the suction device.
According to one embodiment of the utility model, the suction motor comprises an annular bearing surface against which the sound-absorbing element abuts.
According to one embodiment of the utility model, the air discharge circuit comprises a partition configured to at least partially separate the first compartment from the air discharge duct, the partition being rigid and impermeable to air. The presence of such a baffle allows to force at least a portion of the air flow through the sound absorbing element before entering the air discharge duct, thus reducing the noise generated by the suction device of the present utility model without having a significant impact on the manufacturing costs of the suction device.
According to one embodiment of the utility model, the partition extends substantially parallel to the motor shaft, for example from the bottom wall of the first compartment.
According to one embodiment of the utility model, the sound absorbing element is configured to abut against the partition, for example against the upper edge of the partition, at least in one mode of operation of the motor.
According to one embodiment of the utility model, the sound absorbing element and the first compartment are configured such that when the motor is in operation, the entire air flow leaving the at least one air outlet and flowing into the first compartment passes through the sound absorbing element before entering the air discharge duct. This configuration of the sound absorbing element allows to further reduce the noise generated by the suction device of the present utility model.
According to one embodiment of the utility model, the sound absorbing element is deformable between two configurations:
-a first configuration in which the sound absorbing element is spaced apart from the partition and defines with the partition an air channel fluidly connecting the first compartment with the air discharge duct such that when the motor is in operation, at least a portion of the air flow leaving the at least one air outlet and flowing into the first compartment flows through the air channel and to the air discharge duct without flowing through the sound absorbing element, and
A second configuration in which the sound absorbing element abuts against the partition, for example against the upper edge of the partition, such that when the motor is in operation, the entire air flow leaving the at least one air outlet and flowing into the first compartment passes through the sound absorbing element before entering the air discharge duct.
This arrangement of the sound-absorbing element allows, at least in one mode of operation of the suction device, the forced air flow to pass completely through the sound-absorbing element before leaving the suction device. These arrangements allow to further reduce the noise generated by the suction device of the present utility model.
According to one embodiment of the utility model, the sound absorbing element is configured to deform from the first configuration to the second configuration when the negative pressure in the inner compartment exceeds a predetermined value. Therefore, when the negative pressure in the inner compartment increases, in particular when the air flow rate at the air inlet decreases, the sound absorbing element deforms and presses against the partition plate. In this way, the air flow passes completely through the sound-absorbing element before leaving the suction device. These arrangements allow to further reduce the noise generated by the suction device of the present utility model.
According to one embodiment of the utility model, the suction device comprises an additional sound-absorbing element made of porous material and arranged at least partially in the air discharge duct.
According to one embodiment of the utility model, the additional sound absorbing element is a sound absorbing foam.
According to one embodiment of the utility model, the additional sound-absorbing element extends substantially parallel to the motor shaft.
According to one embodiment of the utility model, an additional sound absorbing element is arranged below the sound absorbing element.
According to one embodiment of the utility model, the additional sound-absorbing element comprises an upper edge extending close to the sound-absorbing element, e.g. extending in contact with the sound-absorbing element.
According to one embodiment of the utility model, the air discharge duct comprises an air vein defined in part by the additional sound absorbing element.
According to one embodiment of the utility model, the air pulse is at least partially delimited by the partition and the additional sound-absorbing element.
According to one embodiment of the utility model, the main housing and the sound absorbing element define a second compartment.
According to one embodiment of the utility model, the main housing, the sound absorbing element and the partition define a first compartment.
According to one embodiment of the utility model, the additional sound absorbing element is arranged facing the partition plate.
According to one embodiment of the utility model, the additional sound absorbing element comprises a first surface facing the partition and a second surface opposite to the respective first surface.
According to one embodiment of the utility model, the air vein is defined in part by the baffle and the first surface of the additional sound absorbing element.
According to one embodiment of the utility model, the air pulse extends substantially parallel to the motor shaft.
According to one embodiment of the utility model, the air discharge circuit comprises a deflector fin extending from the partition and arranged in the air discharge duct.
According to one embodiment of the utility model, the additional sound absorbing element abuts against the guide fins.
According to one embodiment of the utility model, the guide fins are configured to secure the additional sound absorbing element.
According to one embodiment of the utility model, the main housing comprises an air intake portion provided with at least one air intake.
According to one embodiment of the utility model, the suction device further comprises an upstream sound-absorbing element fixed to the main housing and arranged upstream of the air intake portion, the upstream sound-absorbing element being made of porous material and at least partially covering the at least one air intake. The presence of the upstream sound absorbing element limits turbulence upstream of the air inlet and homogenizes the air flow flowing along the periphery of the air inlet in the direction of the interior of the suction motor. Thus, noise generated by the air flow flowing upstream of the suction motor is reduced by the elimination of turbulence. In addition, the air flow passing through the sound absorbing member and then through the air passing opening provided in the air intake portion becomes uniform at the inlet of the blade of the fan provided to the suction motor. This allows to reduce the static aerodynamic induced load noise imposed on the fan blades, as well as the noise due to the shear stress of the turbulence around the blades.
According to one embodiment of the utility model, the upstream sound-absorbing element comprises a first face facing the at least one air inlet and a second face opposite the first face, the upstream sound-absorbing element comprising at least one through hole opening in the first face and the second face of the upstream sound-absorbing element, respectively, opposite the at least one air inlet. The presence of at least one through hole allows to avoid any obstruction of the air flow through the upstream sound-absorbing element in case of a blockage of the upstream sound-absorbing element.
According to one embodiment of the utility model, the air inlet is located opposite the at least one air inlet.
According to one embodiment of the utility model, the air intake portion comprises a plurality of air inlets.
According to one embodiment of the utility model, the first face of the upstream sound absorbing element abuts the air intake portion.
According to one embodiment of the utility model, the upstream sound absorbing element is a sound absorbing foam.
According to one embodiment of the utility model, the at least one through hole is located at least partially opposite the air inlet.
According to one embodiment of the utility model, the main housing comprises a receiving compartment in which the sound absorbing element is accommodated.
According to one embodiment of the utility model, the air discharge circuit further comprises a filter element configured to filter the air flow through the at least one air discharge opening.
The utility model also relates to a household vacuum cleaner, such as a ski vacuum cleaner, comprising a suction device according to the utility model.
According to one embodiment of the present utility model, a household cleaner includes:
a housing comprising a motor chamber, in which the suction device is housed, and
A suction connection provided on the housing, through which suction connection waste-conveying air is sucked into the housing, the air inlet being fluidly connected to the suction connection.
According to one embodiment of the utility model, the suction connection is arranged in the front part of the housing.
According to one embodiment of the utility model, the suction motor is configured to generate an air flow through the suction fitting and the air inlet.
According to one embodiment of the utility model, a household vacuum cleaner includes a waste separation and collection device located upstream of the suction motor and configured to retain waste conveyed by an airflow generated by the suction motor. Advantageously, the waste separating and collecting device is removably mounted on the housing.
According to one embodiment of the utility model, the waste separation and collection device is cyclone-type.
According to one embodiment of the utility model, the household vacuum cleaner comprises a connecting conduit configured to fluidly connect the air outlet of the waste separating and collecting device with at least one air inlet provided on the main housing.
According to one embodiment of the utility model, the at least one air discharge opening is directed towards the waste separation and collection device.
According to one embodiment of the utility model, the sound absorbing element is configured to extend substantially horizontally when the housing is parked on a horizontal surface, for example by its wheels.
According to one embodiment of the utility model, the motor shaft is configured to extend substantially vertically when the housing is parked on a horizontal surface, for example by its wheels.
Drawings
In any event, the utility model will be clearly understood by the following description with reference to the accompanying schematic drawings, which show, by way of non-limiting example, one embodiment of the cleaning head.
Figure 1 is a partial top perspective view of a household vacuum cleaner in accordance with the present utility model.
Figure 2 is a partial longitudinal cross-sectional view of the household cleaner of figure 1.
Fig. 3 is a perspective view of a suction device belonging to the household cleaner of fig. 1.
Fig. 4 is a partial perspective view of the suction device of fig. 3.
Fig. 5 is a top view of the suction device of fig. 3.
Fig. 6 is a longitudinal cross-sectional view of the suction device of fig. 3, showing the sound absorbing element in a first configuration.
Fig. 7 is a longitudinal cross-sectional view of the suction device of fig. 3, showing the sound-absorbing element in a second configuration.
Fig. 8 is a partial top view of the suction device of fig. 3.
Fig. 9 is a perspective view of the sound absorbing element.
Fig. 10 is a perspective view of a suction motor belonging to the suction device of fig. 3.
Fig. 11 is a partial longitudinal cross-sectional view of the suction device of fig. 3.
Detailed Description
In this context, the terms "upstream" and "downstream" are defined with respect to the flow direction of the air flow generated by the suction motor.
Fig. 1 to 11 show a household vacuum cleaner 2, for example a ski vacuum cleaner, which comprises in particular a housing 3, also referred to as a vacuum cleaner body, which comprises a suction connection 4 through which waste-conveying air is sucked into the housing 3. Advantageously, the suction connection 4 is provided in the front part of the housing 3. According to the embodiment shown in the figures, the housing 3 is provided with wheels 5 for ensuring movement of the housing 3 over the surface to be cleaned.
The domestic cleaner 2 may also comprise a flexible hose (not shown), for example, which is detachably connected to the suction fitting 4, and a suction attachment (not shown), for example a rigid telescopic tube, which may receive a detachable suction head at an end opposite the flexible hose.
The household cleaner 2 further comprises a waste separating and collecting device 6, which may for example be detachably mounted on the housing 3. Advantageously, the waste separating and collecting device 6 is cyclone-shaped and comprises a waste collecting container 7 and a cyclone chamber 8, which is annular and is delimited from the outside by the side walls of the waste collecting container 7.
The household cleaner 2 further comprises suction means 9 housed in a motor compartment 11 defined by the housing 3 and downstream of the waste separating and collecting means 6.
The suction device 9 comprises a main housing 12 defining an inner compartment 13. According to the embodiment shown in the figures, the main housing 12 comprises a first hood 12.1 and a second hood 12.2, which are assembled together by means of screws or snaps, for example.
The main housing 12 comprises an air intake portion 14, for example an air intake grille, which is secured to the second hood 12.2 and is provided with a plurality of air inlets 15. Each air inlet 15 may have a diameter of, for example, between 1 and 3 mm. According to the embodiment shown in the figures, the air intake portion 14 is flat and circular. The air intake portion 14 may for example be formed by a perforated plate attached to the second hood 12.2.
As shown in fig. 2, the household cleaner 2 comprises a connecting duct 16 configured to fluidly connect the air outlet of the waste separating and collecting device 6 with an air inlet 15 provided on the main housing 12.
The suction device 9 further comprises a suction motor 17 (also called electric fan) arranged in the inner compartment 13 of the main housing 12 and comprising an air inlet 18 fluidly connected to the suction connection 4 and located opposite at least a portion of the air inlet 15 provided on the air inlet portion 14. Advantageously, the air intake portion 14 and the air inlet 18 are coaxially arranged.
The suction motor 17 is configured to generate an air flow through the suction connection 4, the waste separating and collecting device 6, the connecting duct 16, the air inlet 15 and the air inlet 18. In a known manner, the suction motor 17 comprises a fan 19 and a motor 21 configured to drive the fan 19 in rotation. The fan 19 may include a fan housing 22 that at least partially covers the impeller of the fan 19 and defines the air inlet 18.
The suction motor 17 further comprises at least one air outlet 23 which opens into the inner compartment 13 and through which the air flow leaves the suction motor 17 and can flow into the inner compartment 13. The or each air outlet 23 may for example be provided in a lower part of the motor housing 24 of the suction motor 17.
According to the embodiment shown in the figures, the suction motor 17 has a motor shaft a which extends substantially vertically when the housing 3 is parked on a horizontal plane by its wheels 5.
The suction device 9 further comprises a sound absorbing element 25 arranged in the inner compartment 13 and made of a porous material, for example a porous material with an open cavity. Thus, the pores (also referred to as cavities or cells) of the sound absorbing element 25 are filled with air, which functions to dissipate the acoustic energy of the incident sound waves as heat in the porous material structure. Advantageously, the sound absorbing element 25 is a sound absorbing foam, such as a cellular polyurethane foam, in particular an open-cell polyurethane foam.
For example, the sound absorbing element 25 may have a net density of between 26 and 30 kg/cubic meter (measured according to standard ISO 845), a compressive strength of between 2.0 and 4.0 kilopascals at 40% compression (measured according to standard ISO 3386/1), a tensile strength of between 190 and 210 kilopascals (measured according to standard ISO 1798), for example about 200 kilopascals, an elongation at break of between 320 and 370% (measured according to standard ISO 1798), for example about 350%, a pore diameter of between 440 and 450 micrometers (measured according to method Recticel/t.013.4).
The sound absorbing element 25 extends radially around the motor 21 and divides the inner compartment 13 into a first compartment 26 in which the motor 21 is at least partially arranged and a second compartment 27 in which the fan 19 is arranged. The or each air outlet 23 is particularly open in the first compartment 26.
According to the embodiment shown in the figures, the sound-absorbing element 25 has a plate-like overall shape and has a substantially rectangular shape. Advantageously, the sound absorbing element 25 is configured to extend substantially horizontally when the housing 3 is parked on a horizontal surface, for example by its wheels 5.
The sound absorbing element 25 comprises a first face facing the fan 19 and a second face opposite to the respective first face. Advantageously, the first and second faces of the sound-absorbing element 25 are substantially parallel.
According to the embodiment shown in the figures, the suction motor 17 comprises an annular bearing surface 28 against which the sound-absorbing element 25 abuts.
The sound absorbing element 25 comprises a motor through opening 29, into which the motor 21, in particular the motor housing 24 of the motor 21, is inserted. Advantageously, the sound absorbing element 25 comprises an inner circumferential surface defining the motor passage opening 29 and configured to cooperate with the outer circumferential surface of the motor housing 24. Advantageously, the inner peripheral surface has a shape complementary to the shape of the outer peripheral surface of the motor housing 24.
According to the embodiment shown in the figures, the sound-absorbing element 25 extends to the inner wall of the main housing 12 and has a shape complementary to the shape of the portion of the main housing 12 in which the sound-absorbing element 25 is provided, for example to the shape of the first hood 12.1 or the second hood 12.2. In particular, the sound absorbing element 25 comprises outer edges configured to abut against the inner walls of the main housing 12, respectively. In this way, the first and second compartments 26, 27 are separated from each other by the sound absorbing element 25.
The suction device 9 further comprises an air discharge circuit 31 comprising an air discharge opening 32 (see fig. 6) open in the outer surface of the main housing 12 through which the air flow generated by the suction motor 17 is discharged to the outside of the suction device 9. According to the embodiment shown in the figures, the air discharge 32 is directed towards the waste separating and collecting device 6.
The air discharge circuit 31 further comprises an air discharge conduit 33 fluidly connecting the inner compartment 13 and thus the air outlet 23 with the air discharge opening 32.
Advantageously, the sound absorbing element 25 is configured such that when the motor 21 is in operation, at least a portion of the air flow exiting the air outlet 23 and flowing into the first compartment 26 passes through the sound absorbing element 25 and into the second compartment 27, and then passes through the sound absorbing element 25 again and into the air discharge duct 33.
The air discharge circuit 31 further comprises a partition 34 configured to separate the first compartment 26 from the air discharge duct 33. The partition 34 is rigid and impermeable to air. Advantageously, the partition 34 extends substantially parallel to the motor shaft a, for example starting from the bottom wall of the first compartment 26.
According to the embodiment shown in the figures, the sound-absorbing element 25 is deformable between two configurations:
A first configuration (see fig. 6), in which the sound-absorbing element 25 is spaced apart from the upper edge of the partition 34 and delimits, with the partition 34, an air channel 35 fluidly connecting the first compartment 26 and the air-discharge duct 33, such that when the motor 21 is in operation, at least a portion of the air flow leaving the air outlet 23 and flowing into the first compartment 26 flows in the air channel 15 and in the direction of the air-discharge duct 33, without flowing through the sound-absorbing element 25, and
A second configuration (see fig. 7) in which the sound-absorbing element 25 abuts against the upper edge of the partition 34, so that when the motor 21 is in operation, all the air flow leaving the air outlet 23 and flowing into the first compartment 26 passes through the sound-absorbing element 25 before entering the air discharge duct 33.
The sound absorbing element 25 may, for example, be configured to deform from a first configuration to a second configuration when the negative pressure in the inner compartment 13 exceeds a predetermined value.
According to a variant embodiment of the utility model, the sound-absorbing element 25 may be always against the upper edge of the partition 34, and the sound-absorbing element 25 and the first compartment 26 may be configured such that, when the motor 21 is in operation, all the air flow leaving the air outlet 23 and flowing into the first compartment 26 passes through the sound-absorbing element 25 before entering the air discharge duct 33.
According to the embodiment shown in the figures, the suction device 9 comprises an additional sound-absorbing element 36 made of porous material and arranged in the air discharge duct 33. Advantageously, the additional sound absorbing element 36 is a sound absorbing foam, such as a cellular polyurethane foam, in particular an open-cell polyurethane foam.
The additional sound absorbing member 36 is substantially parallel to the motor shaft a and is located opposite the diaphragm 34. In particular, the additional sound absorbing element 36 comprises a first surface facing the partition 34 and a second surface opposite to the respective first surface. Advantageously, the first and second surfaces of the additional sound absorbing element 36 are substantially parallel.
According to the embodiment shown in the figures, an additional sound-absorbing element 36 extends below the sound-absorbing element 25. The additional sound absorbing element 36 may for example comprise an upper edge extending close to the sound absorbing element 25, for example in contact with the sound absorbing element 25.
More specifically, the air discharge duct 33 comprises an air pulse 37, which air pulse 37 extends substantially parallel to the motor shaft a and is defined in part by the additional sound absorbing element 36 and the partition 34.
Advantageously, the air discharge circuit 31 comprises a deflector fin 38 extending from the partition 34 and arranged in the air discharge duct 33. Advantageously, the guide fins 38 abut against the additional sound absorbing element 36, in particular configured to fix the additional sound absorbing element 36.
The air discharge circuit 31 further includes a filter element 39 configured to filter the air flow through the air discharge port 32. The filter element 39 may for example be at least partially accommodated in the air discharge opening 32 and located behind the waste separating and collecting device 6.
The suction device 9 further comprises an upstream sound absorbing element 41 fixed to the main housing 12 and arranged upstream of the air intake portion 14. The upstream sound absorbing element 41 is made of a porous material, for example, a porous material having an open cavity. Advantageously, the upstream sound absorbing element 41 is a sound absorbing foam, such as a cellular polyurethane foam, in particular an open-cell polyurethane foam.
According to the embodiment shown in the figures, the main housing 12, in particular the second hood 12.2, comprises a baffle wall 42 extending from the outer surface of the second hood 12.2 and extending around the air intake portion 14 and the upstream sound absorbing element 41. The air intake portion 14 and the baffle wall 42 at least partially define a receiving compartment 43 in which the upstream sound absorbing element 41 is received.
The upstream sound absorbing element 41 extends perpendicularly to the motor shaft a and is configured to extend horizontally when the housing 3 is parked on a horizontal surface, for example by its wheels 5. The upstream sound-absorbing element 41 may, for example, be substantially parallelepiped in shape and have a substantially rectangular shape.
The upstream sound absorbing element 41 comprises a first face 41.1 facing the air inlet 15 and a second face 41.2 opposite the first face 41.1. Advantageously, the first and second faces 41.1, 41.2 of the upstream sound-absorbing element 41 are substantially parallel and the first face 41.1 of the upstream sound-absorbing element 41 abuts the air intake portion 14 such that the upstream sound-absorbing element 41 covers the plurality of air inlets 15. In this way, the suction device 9 is configured such that at least a portion of the air flow generated by the suction motor 17 flows through the upstream sound absorbing element 41 and towards the air inlet 15.
According to the embodiment shown in the figures, the upstream sound-absorbing element 41 comprises through holes 44 opening in the first and second faces 41.1, 41.2 of the upstream sound-absorbing element 41, respectively, and located opposite at least a portion of the air inlet 15. According to the embodiment shown in the figures, the through hole 44 is cylindrical and has a circular cross section. Advantageously, the through hole 44 and the air inlet 18 are coaxially arranged.
Of course, the utility model is in no way limited to the embodiments described and illustrated, which are given by way of example only. Modifications may be made without departing from the scope of the utility model, particularly in terms of the constitution of the various elements, or by substitution of technical equivalents.
Claims (17)
1. A suction device for a household vacuum cleaner (2), comprising:
-a main housing (12) defining an inner compartment (13) and comprising at least one air inlet (15) opening into said inner compartment (13),
-A suction motor (17) arranged in the inner compartment (13) and comprising an air inlet (18) fluidly connected with at least one air inlet (15) and at least one air outlet (23) opening into the inner compartment (13), the suction motor (17) comprising a fan (19) and a motor (21) having a motor shaft (a) and configured to drive the fan (19) in rotation, the suction motor (17) being configured to generate an air flow through the at least one air inlet (15) and the air inlet (18),
-An air discharge circuit (31) comprising at least one air discharge opening (32) provided on the main housing (12) and an air discharge duct (33) through which an air flow generated by the suction motor (17) is discharged to the outside of the suction device (9), the air discharge duct (33) fluidly connecting the inner compartment (13) with the at least one air discharge opening (32), and
-A sound absorbing element (25), which sound absorbing element (25) is made of a porous material and is arranged in the inner compartment (13), which sound absorbing element extends around the motor (21) and divides the inner compartment (13) into a first compartment (26) in which the motor (21) is at least partially arranged and a second compartment (27) in which the fan (19) is arranged, at least one air outlet (23) opening into the first compartment (26),
Characterized in that the sound absorbing element (25) is configured such that at least a part of the air flow leaving at least one air outlet (23) and flowing into the first compartment (26) passes through the sound absorbing element (25) and into the second compartment (27) when the motor (21) is operated.
2. Suction device according to claim 1, characterized in that the sound-absorbing element (25) extends radially around the motor (21).
3. The suction device according to claim 1, wherein the sound absorbing element (25) is configured such that when the motor (21) is operated, at least a portion of the air flow that has passed through the sound absorbing element (25) and into the second compartment (27) passes through the sound absorbing element (25) again and into the air discharge duct (33).
4. A suction arrangement, as set forth in claim 3, characterized in that the sound-absorbing element (25) extends radially around the motor (21).
5. A suction device according to any one of claims 1-4, characterized in that the sound-absorbing element (25) extends to a plurality of inner walls of the main housing (12).
6. A suction device according to any one of claims 1-4, characterized in that the sound-absorbing element (25) has a shape complementary to the shape of the part of the main housing (12) where the sound-absorbing element (25) is provided.
7. A suction device according to any one of claims 1-4, characterized in that the sound-absorbing element (25) comprises a motor through opening (29) into which the motor (21) is inserted.
8. The suction arrangement, as set forth in any of claims 1-4, characterized in that the air discharge circuit (31) comprises a partition (34) configured to at least partially separate the first compartment (26) and the air discharge duct (33), the partition (34) being rigid and impermeable to air.
9. Suction device according to claim 8, characterized in that the sound-absorbing element (25) is configured to abut against the partition (34) at least in one operating mode of the motor (21).
10. Suction device according to claim 8, characterized in that the sound-absorbing element (25) is deformable between two configurations:
-a first configuration in which the sound-absorbing element (25) is spaced apart from the partition (34) and delimits, together with the partition (34), an air channel (35) fluidly connecting the first compartment (26) with an air discharge duct (33), such that when the motor (21) is in operation, at least a portion of the air flow leaving at least one air outlet (23) and flowing into the first compartment (26) flows through the air channel (35) and towards the air discharge duct (33) without flowing through the sound-absorbing element (25), and
-A second configuration in which the sound absorbing element (25) abuts against the partition (34) such that when the motor (21) is operating, the entire air flow leaving at least one air outlet (23) and flowing into the first compartment (26) passes through the sound absorbing element (25) before entering the air discharge duct (33).
11. Suction device according to claim 10, characterized in that the sound-absorbing element (25) is configured to deform from the first configuration to the second configuration when the negative pressure in the inner compartment (13) exceeds a predetermined value.
12. A suction arrangement, as set forth in any of claims 1-4, characterized in that the sound-absorbing element (25) is a sound-absorbing foam.
13. A suction arrangement, according to any one of claims 1-4, characterized in that the suction arrangement comprises an additional sound-absorbing element (36) made of porous material and arranged at least partly in the air discharge duct (33).
14. Suction device according to claim 13, characterized in that the additional sound-absorbing element (36) extends substantially parallel to the motor shaft (a).
15. Suction device according to claim 13, characterized in that the air discharge duct (33) comprises an air vein (37) defined in part by the additional sound-absorbing element (36).
16. The suction arrangement, as set forth in claim 15, characterized in that the air discharge circuit (31) comprises a partition (34) configured to at least partially separate the first compartment (26) and the air discharge duct (33), the partition (34) being rigid and impermeable to air, and the air vein (37) being at least partially delimited by the partition (34) and the additional sound-absorbing element (36).
17. Household vacuum cleaner, characterized in that it comprises a suction device (9) according to any one of claims 1 to 16.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2213582A FR3143310A1 (en) | 2022-12-16 | 2022-12-16 | Suction device for domestic vacuum cleaner |
| FRFR2213582 | 2022-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221285605U true CN221285605U (en) | 2024-07-09 |
Family
ID=86272142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323326976.1U Active CN221285605U (en) | 2022-12-16 | 2023-12-07 | Suction device for household dust collector and household dust collector comprising same |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4385376A1 (en) |
| CN (1) | CN221285605U (en) |
| FR (1) | FR3143310A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3402603A1 (en) * | 1984-01-26 | 1985-08-01 | Electrostar Schöttle GmbH & Co, 7313 Reichenbach | Vacuum cleaner |
| AU2006200912A1 (en) * | 2005-05-20 | 2006-12-07 | Samsung Gwangju Electronics Co., Ltd. | Exhausting apparatus of a motor assembly and a vacuum cleaner having the same |
| CN104997463B (en) | 2014-04-23 | 2017-07-28 | 江苏美的清洁电器股份有限公司 | Inlet duct and dust catcher for dust catcher |
-
2022
- 2022-12-16 FR FR2213582A patent/FR3143310A1/en active Pending
-
2023
- 2023-12-06 EP EP23214780.1A patent/EP4385376A1/en active Pending
- 2023-12-07 CN CN202323326976.1U patent/CN221285605U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| FR3143310A1 (en) | 2024-06-21 |
| EP4385376A1 (en) | 2024-06-19 |
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