CN118203259A - Suction device for household vacuum cleaner - Google Patents
Suction device for household vacuum cleaner Download PDFInfo
- Publication number
- CN118203259A CN118203259A CN202311670179.7A CN202311670179A CN118203259A CN 118203259 A CN118203259 A CN 118203259A CN 202311670179 A CN202311670179 A CN 202311670179A CN 118203259 A CN118203259 A CN 118203259A
- Authority
- CN
- China
- Prior art keywords
- suction device
- air
- absorbing element
- sound absorbing
- sound
- 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.)
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- 239000011148 porous material Substances 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 description 16
- 230000036961 partial effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction 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
- 230000002829 reductive effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Electric Suction Cleaners (AREA)
Abstract
Suction device (9), comprising: a main housing (12) including an air intake portion (14) provided with an air passage opening (15); a suction motor (17) provided in the main casing (12) and including an air inlet (18) located opposite the air passage opening (15); and a sound absorbing element (21) fixed to the main casing (12) and at least partially covering the air passage opening (15), the sound absorbing element (21) being made of a porous material and comprising at least one through hole (25) located opposite at least a portion of the air passage opening (15).
Description
Technical Field
The present invention 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
The household vacuum cleaner comprises in a known manner suction means comprising:
A main housing comprising an air passage opening, and
A suction motor disposed in the main housing and including an air inlet located opposite the air passage opening, the suction motor configured to generate an air flow through the air passage opening and the air inlet.
This arrangement of the suction device creates a large amount of turbulence upstream of the air inlet, causing turbulent airflow to flow through the air inlet of the suction motor. Accordingly, the air flow circulating upstream of the suction motor generates a loud noise, and the suction motor generates a loud noise, which causes discomfort to the user. Furthermore, such turbulence causes increased load losses in the suction device, which have an adverse effect on the suction performance of the suction device.
Disclosure of Invention
The present invention aims to overcome all or part of these disadvantages.
The invention is based on the technical problem, inter alia, of providing a suction device which is simple and economical in construction, while at the same time limiting the noise generated by such a suction device and having an improved suction performance.
To this end, the invention relates to a suction device for a household vacuum cleaner, comprising:
A main housing comprising an air intake portion, such as an air intake grille, provided with a plurality of air passage openings,
A suction motor arranged in the main housing and comprising an air inlet located opposite at least a part of the air passage opening provided in the air intake portion, the suction motor being configured to generate an air flow through the air passage opening and the air inlet, and
A sound-absorbing element fixed to the main casing and arranged upstream of the air intake portion, the sound-absorbing element being made of a porous material and at least partially covering the air passage opening, the sound-absorbing element comprising a first face facing the air passage opening and a second face opposite the first face, the sound-absorbing element comprising at least one through hole opening in the first face and in the second face of the sound-absorbing element, respectively, opposite at least a portion of the air passage opening.
In other words, the at least one through hole has a diameter such that a cross section of the through hole covers the plurality of air passing openings.
The presence of the sound absorbing element limits turbulence upstream of the air inlet and homogenizes the air flow flowing around the periphery of the air inlet and into the interior of the suction motor. Thus, the noise generated by the circulating air flow upstream of the suction motor is reduced by the elimination of these turbulences.
Further, the air flow passing through the sound absorbing member and then through the air passing port provided on 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 and the noise generated by the shear stress of the turbulence surrounding the blades.
Furthermore, the combination of the sound absorbing element and the perforated air intake portion (which forms a kind of helmholtz resonator) allows to attenuate the amplitude of the sound waves propagating upstream of the suction motor in a large spectral band.
The particular configuration of the suction device according to the invention thus allows to significantly reduce the noise generated by the air flow through the suction device and the noise generated by the suction motor, while limiting the load losses generated inside the suction device.
The presence of at least one through hole also allows to avoid any obstruction of the air flow through the sound absorbing element in case of a blockage of the sound absorbing element.
The suction device may also have one or more of the following features, alone or in combination.
According to one embodiment of the invention, the at least one through hole is cylindrical or frustoconical.
According to one embodiment of the invention, at least one through hole has a circular cross section.
According to one embodiment of the invention, the first face of the sound-absorbing element abuts against the air intake portion.
According to one embodiment of the invention, the sound absorbing element has a maximum transverse dimension which is greater than the maximum transverse dimension of the air intake portion.
According to one embodiment of the invention, the sound absorbing element has a maximum transverse dimension which is larger than the diameter of the air inlet.
According to one embodiment of the invention, the sound absorbing element is substantially rectangular.
According to one embodiment of the invention, the air intake portion is substantially flat and has a substantially circular shape.
According to one embodiment of the invention, the air inlet portion and the air inlet are arranged substantially coaxially. This configuration of the suction device allows to attenuate the amplitude of the sound waves propagating upstream of the suction motor in a greater spectral band.
According to one embodiment of the invention, the sound absorbing element is a sound absorbing foam.
According to one embodiment of the invention, the sound absorbing element is made of a porous material with open cavities.
According to one embodiment of the invention, the sound-absorbing element is sound-absorbing porous and is advantageously made of a sound-absorbing porous material.
According to one embodiment of the invention, the first and second faces of the sound-absorbing element are substantially parallel.
According to one embodiment of the invention, the sound absorbing element is substantially parallelepiped.
According to one embodiment of the invention, the sound absorbing element has a thickness of between 5 and 40 mm.
According to one embodiment of the invention, the at least one through hole is located at least partially opposite the air inlet. In other words, the orthogonal projection of the at least one through hole onto the reference plane, which is perpendicular to the motor shaft of the suction motor, coincides at least partially with the orthogonal projection of the air inlet onto said reference plane. This configuration of the sound absorbing element allows further improvement of the acoustic performance of the sound absorbing element.
According to one embodiment of the invention, the motor shaft of the suction motor intersects with at least one through hole.
According to one embodiment of the invention, the at least one through hole and the air inlet are arranged substantially coaxially. This configuration of the suction device allows to attenuate the amplitude of the sound waves propagating upstream of the suction motor in a greater spectral band.
According to one embodiment of the invention, the at least one through hole has a diameter of 10% to 150%, advantageously 100% to 140% of the diameter of the air inlet.
According to one embodiment of the invention, the ratio of the diameter of the at least one through hole to the diameter of the air inlet is between 1 and 1.5, for example between 1 and 1.35.
According to one embodiment of the invention, the through hole has a channel cross section which is substantially the same as the channel cross section of the air inlet.
According to one embodiment of the invention, the at least one through hole has a diameter of between 30 and 40 mm.
According to one embodiment of the invention, each air passage opening has a diameter of between 1 and 3 mm.
According to one embodiment of the invention, the air inlet and the air intake are spaced from each other by a distance of less than or equal to 2 cm.
According to one embodiment of the invention, the sound absorbing element has a thickness greater than said spacing.
According to one embodiment of the invention, the main housing comprises a receiving compartment containing the sound absorbing element. This configuration of the main casing ensures the position stability of the sound absorbing element.
According to one embodiment of the invention, the main housing comprises a baffle wall extending around the air intake portion and the sound absorbing element, the air intake portion and the baffle wall at least partially defining the receiving compartment.
According to one embodiment of the invention, the retaining wall has a shape complementary to the shape of the sound-absorbing element. This configuration of the main housing allows the sound absorbing element to be easily and inexpensively fixed to the main housing.
According to one embodiment of the invention, the baffle wall comprises a flow guide located upstream of the sound-absorbing element and configured to guide the air flow generated by the suction motor towards the sound-absorbing element. Advantageously, the flow guiding portions converge in the direction of the sound absorbing element.
According to one embodiment of the invention, the blocking wall defines an insertion opening into the receiving compartment, through which the sound-absorbing element is configured to be inserted into the receiving compartment.
According to one embodiment of the invention, the suction motor has a motor shaft and the sound-absorbing element extends substantially perpendicularly to the motor shaft.
According to one embodiment of the invention, a suction motor includes a fan and a motor configured to drive the fan in rotation.
According to one embodiment of the invention, the suction device comprises: an air discharge circuit including at least one air discharge port provided on the main housing, through which an air flow generated by the suction motor is discharged to the outside of the suction device; and an air discharge duct fluidly connecting the air outlet of the suction motor with at least one air discharge port.
According to one embodiment of the invention, the air discharge circuit further comprises a filter element configured to filter the air flow through the at least one air discharge opening.
According to one embodiment of the invention, the sound absorbing element comprises a single through hole. However, according to another embodiment of the present invention, the sound absorbing member may include a plurality of through holes. The through holes may be distributed, e.g. evenly distributed, around the central axis of the air inlet.
According to one embodiment of the invention, the air inlet portion is formed by a perforated plate.
According to one embodiment of the invention, the suction device is configured such that at least a portion of the air flow generated by the suction motor flows through the sound absorbing element and towards the air passage opening.
The invention also relates to a household vacuum cleaner, such as a ski-type vacuum cleaner, comprising a suction device according to the invention.
According to one embodiment of the present invention, a household cleaner includes:
-a housing comprising a motor compartment, in which the suction device is housed, and
A suction connection arranged on the housing, through which suction connection waste-conveying air can be sucked into the housing, the air inlet being fluidly connected to the suction connection.
According to one embodiment of the invention, the suction connection is arranged in the front part of the housing.
According to one embodiment of the invention, the suction motor is configured to generate an air flow through the suction fitting and the air inlet.
According to one embodiment of the invention, the household vacuum cleaner comprises a waste separating and collecting device located upstream of the suction motor and configured to retain waste conveyed by the air flow generated by the suction motor. Advantageously, the waste separating and collecting device is removably mounted on the housing.
According to one embodiment of the invention, the waste separation and collection device is cyclone-type.
According to one embodiment of the invention, the household vacuum cleaner comprises a connecting conduit configured to fluidly connect the air outlet of the waste separating and collecting device with an air passage opening provided in the main housing.
According to one embodiment of the invention, the at least one air discharge opening is directed towards the waste separation and collection device.
According to one embodiment of the invention, 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 invention, 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 invention 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 invention.
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.
Fig. 7 is a partial longitudinal cross-sectional view of the suction device of fig. 3.
Fig. 8 is a perspective view of a suction motor belonging to 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 8 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 arranged in the front part of the housing 3. In the embodiment shown in the figures, the housing 3 is provided with wheels 5 for ensuring that the housing 3 moves 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 its 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 lower hood 12.1 and an upper hood 12.2, which are assembled together, for example by means of screws or snap-fit.
The main housing 12 comprises an air inlet portion 14, for example an air inlet grille, which is fixed to the upper housing 12.2 and has a plurality of air passage openings 15. Each air passage opening 15 may for example have a diameter of between 1 and 3 mm. According to the embodiment shown in the figures, the air intake portion 14 is flat and has a circular shape. The air intake portion 14 may for example be formed by a perforated plate attached to the upper housing 12.2.
As shown in fig. 2, the household cleaner 2 comprises a connecting conduit 16 configured to fluidly connect the air outlet of the waste separating and collecting device 6 with an air passage opening 15 provided in the main housing 12.
The suction device 9 further comprises a suction motor 17, also called an electric fan, which is arranged in the inner compartment 13 of the main housing 12 and comprises an air inlet 18 which is fluidly connected to the suction connection 4 and which is located opposite at least a part of the air passage opening 15 provided in the air intake 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 passage opening 15 and the air inlet 18. In a known manner, the suction motor 17 comprises a fan 17.1 and a motor 17.2 configured to drive the fan 17.1 in rotation. The suction motor 17 may further comprise a fan housing 19 which at least partly covers the fan 17.1 and defines an air inlet 18.
The suction motor 17 further comprises at least one air outlet 20 through which the air flow leaves the suction motor 17 and can flow into the inner compartment 13. The or each air outlet 20 may for example be provided in a lower part of the motor housing 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 21 fixed to the main housing 12 and arranged upstream of the air intake portion 14.
The sound absorbing element 21 is made of a porous material, for example, a porous material having an open cavity. Thus, the pores (also called cavities or cells) of the sound absorbing element 21 are filled with air, the function of which is to dissipate the acoustic energy of the incident sound waves as heat in the porous material structure. Advantageously, the sound absorbing element 21 is a sound absorbing foam, such as a cellular polyurethane foam, in particular an open-cell polyurethane foam.
For example, the sound absorbing element 21 may have a net density of between 26 and 30 kg/cc (measured according to standard ISO 845), a compressive strength of between 2.0 and 4.0 kpa at 40% compression (measured according to standard ISO 3386/1), a tensile strength of between 190 and 210 kpa (measured according to standard ISO 1798), for example about 200 kpa, 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).
According to the embodiment shown in the figures, the main housing 12, in particular the upper hood 12.2, has a blocking wall 22 extending from the outer surface of the upper hood 12.2 and extending around the air intake portion 14 and the sound absorbing element 21. The air intake portion 14 and the baffle wall 22 at least partially delimit a receiving compartment 23 in which the sound absorbing element 21 is accommodated.
As shown in fig. 4, the blocking wall 22 defines an insertion opening 24 which opens into the receiving compartment 23. The sound absorbing element 21 is configured to be inserted into the receiving compartment 23 through the insertion opening 24.
Advantageously, the retaining wall 22 comprises: a retaining portion 22.1 extending substantially parallel to the motor shaft a, configured to cooperate with the sound-absorbing element 21; and a flow guiding portion 22.2 located upstream of the sound absorbing element 21 and configured to guide the air flow generated by the suction motor 17 towards the sound absorbing element 21. According to the embodiment shown in the figures, the flow guiding portions 22.2 converge in the direction of the retaining portions 22.1 and thus in the direction of the sound absorbing element 21.
According to the embodiment shown in the figures, the sound-absorbing element 21 extends perpendicularly to the motor shaft a and is configured to extend horizontally when the housing 3 is parked on a horizontal surface by means of, for example, its wheels 5. The sound absorbing element 21 may for example be substantially parallelepiped and have a substantially rectangular shape. The sound-absorbing element 21 may for example have a thickness of between 5 and 40 mm.
The sound absorbing element 21 comprises a first face 21.1 facing the air passage opening 15 and a second face 21.2 opposite the first face 21.1. Advantageously, the first and second faces 21.1, 21.2 of the sound-absorbing element 21 are substantially parallel and the first face 21.1 of the sound-absorbing element 21 rests against, i.e. on, the air intake portion 14 such that the sound-absorbing element 21 at least partially covers the air passage opening 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 sound absorbing element 21 and to the air passing port 15.
According to the embodiment shown in the figures, the sound-absorbing element 21 comprises a single through-hole 25 which opens in the first and second faces 21.1, 21.2 of the sound-absorbing element 21, respectively, and which is located opposite at least a part of the air-passing opening 15. According to the embodiment shown in the figures, the through hole 25 is cylindrical and has a circular cross section. Advantageously, the through hole 25 and the air inlet 18 are coaxially arranged.
The through hole 25 may, for example, have a diameter of 10% to 150% of the diameter of the air inlet 18. Advantageously, the ratio of the diameter of the through hole 25 to the diameter of the air inlet 18 is between 1 and 1.5, in particular between 1 and 1.35. The through-hole 25 may have a channel cross-section that is substantially the same as, e.g., the same as, the channel cross-section of the air inlet 18. The through hole 25 may for example have a diameter of between 30 and 40 mm.
According to the embodiment shown in the figures, the air inlet 18 and the air intake portion 14 are spaced apart from each other by a distance of less than or equal to 2 cm. Advantageously, the sound-absorbing element 21 has a thickness greater than said spacing.
The suction device 9 further comprises an air discharge circuit 26 comprising an air discharge opening 27 (see fig. 6) opening in the outer surface of the main housing 12, through which air discharge opening 27 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 27 is directed towards the waste separating and collecting device 6.
The air discharge circuit 26 further comprises a conduit 28 fluidly connecting the inner compartment 13 and thus the air outlet 20 of the suction motor 17 with an air discharge 27.
The air discharge circuit 26 further includes a filter element 29 configured to filter the air flow through the air discharge port 27. The filter element 29 may for example be at least partially accommodated in the air discharge opening 27 and located behind the waste separating and collecting device 6.
According to a variant embodiment of the invention, the sound-absorbing element 21 may comprise a plurality of through holes 25, each opening into the first and second faces 21.1, 21.2 of the sound-absorbing element 21, respectively. Such through holes 25 may be distributed, e.g., evenly distributed, around the central axis of the air inlet 18. Such through holes 25 may also be arranged symmetrically with respect to a plane of symmetry passing through the central axis of the air inlet 18.
Of course, the invention 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 invention, particularly in terms of the constitution of the various elements, or by substitution of technical equivalents.
Claims (16)
1. A suction device (9) for a household vacuum cleaner (2), comprising:
A main housing (12) comprising an air intake portion (14) provided with a plurality of air passage openings (15),
-A suction motor (17) arranged in the main housing (12) and comprising an air inlet (18) located opposite at least a part of an air passage opening (15) arranged on the air intake portion (14), the suction motor (17) being configured to generate an air flow through the air passage opening (15) and the air inlet (18), and
-A sound absorbing element (21) fixed on the main housing (12) and arranged upstream of the air intake portion (14), the sound absorbing element (21) being made of a porous material and at least partially covering the air passage opening (15), the sound absorbing element (21) comprising a first face (21.1) facing the air passage opening (15) and a second face (21.2) opposite the first face (21.1), the sound absorbing element (21) comprising at least one through hole (25), the through hole (25) opening in the first and second faces (21.1, 21.2) of the sound absorbing element (21) respectively and being located opposite at least a portion of the air passage opening (15).
2. Suction device (9) according to claim 1, wherein the first face (21.1) of the sound-absorbing element (21) abuts against the air intake portion (14).
3. Suction device (9) according to claim 1 or 2, wherein the sound-absorbing element (21) has a maximum transverse dimension which is greater than the maximum transverse dimension of the air-intake portion (14).
4. A suction device (9) according to any one of claims 1 to 3, wherein the air intake portion (14) is substantially flat and has a substantially circular shape.
5. Suction device (9) according to any one of claims 1 to 4, wherein the air intake portion (14) and the air inlet (18) are arranged substantially coaxially.
6. The suction device (9) according to any one of claims 1 to 5, wherein the sound absorbing element (21) is a sound absorbing foam.
7. Suction device (9) according to any one of claims 1 to 6, wherein the at least one through hole (25) is located at least partially opposite the air inlet (18).
8. Suction device (9) according to any one of claims 1 to 7, wherein the at least one through hole (25) is cylindrical or frustoconical.
9. Suction device (9) according to any one of claims 1 to 8, wherein the at least one through hole (25) has a circular cross section.
10. Suction device (9) according to any one of claims 1 to 9, wherein the at least one through hole (25) and the air inlet (18) are arranged substantially coaxially.
11. Suction device (9) according to any one of claims 1 to 10, wherein the at least one through hole (25) has a diameter of 10% to 150% of the diameter of the air inlet (18).
12. Suction device (9) according to any one of claims 1 to 11, wherein each air passage opening (15) has a diameter of between 1 and 3 mm.
13. Suction device (9) according to any one of claims 1 to 12, wherein the air inlet (18) and the air intake portion (14) are spaced from each other by a distance of less than or equal to 2 cm.
14. Suction device (9) according to any one of claims 1 to 13, wherein the main housing (12) comprises a receiving compartment (23) containing the sound-absorbing element (21).
15. Suction device (9) according to claim 14, wherein the main housing (12) comprises a baffle wall (22) extending around the air intake portion (14) and the sound absorbing element (21), the air intake portion (14) and baffle wall (22) at least partially delimiting the receiving compartment (23).
16. A household vacuum cleaner (2) comprising a suction device (9) according to any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2213585A FR3143309A1 (en) | 2022-12-16 | 2022-12-16 | Suction device for domestic vacuum cleaner |
| FRFR2213585 | 2022-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118203259A true CN118203259A (en) | 2024-06-18 |
Family
ID=85381435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311670179.7A Pending CN118203259A (en) | 2022-12-16 | 2023-12-07 | Suction device for household vacuum cleaner |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4385377A1 (en) |
| CN (1) | CN118203259A (en) |
| FR (1) | FR3143309A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100500848B1 (en) * | 2003-07-07 | 2005-07-12 | 삼성광주전자 주식회사 | Motor assembly and vacuum cleaner having the same |
| JP5216688B2 (en) * | 2009-05-29 | 2013-06-19 | 株式会社東芝 | Electric vacuum cleaner |
| FR3120296B1 (en) * | 2021-03-08 | 2023-02-10 | Seb Sa | Household vacuum cleaner equipped with a sound attenuation cavity |
-
2022
- 2022-12-16 FR FR2213585A patent/FR3143309A1/en active Pending
-
2023
- 2023-12-06 EP EP23214781.9A patent/EP4385377A1/en active Pending
- 2023-12-07 CN CN202311670179.7A patent/CN118203259A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP4385377A1 (en) | 2024-06-19 |
| FR3143309A1 (en) | 2024-06-21 |
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