CN111096708A - Air outlet cover assembly of dust collector and dust collector with same - Google Patents
Air outlet cover assembly of dust collector and dust collector with same Download PDFInfo
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- CN111096708A CN111096708A CN201811250715.7A CN201811250715A CN111096708A CN 111096708 A CN111096708 A CN 111096708A CN 201811250715 A CN201811250715 A CN 201811250715A CN 111096708 A CN111096708 A CN 111096708A
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- air outlet
- air duct
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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
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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
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
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- Mechanical Engineering (AREA)
- Electric Suction Cleaners (AREA)
Abstract
The invention discloses an air outlet cover component of a dust collector and the dust collector with the same, wherein the air outlet cover component comprises: the air outlet cover is internally provided with an air duct, the air duct is provided with an air inlet and an air outlet, the air inlet is suitable for being communicated with an air outlet of a motor cover of the dust collector, and the air outlet is suitable for being communicated with the external environment; amortization subassembly, amortization subassembly is located in the wind channel, the amortization subassembly includes: a micro-perforated plate provided with a plurality of micro-perforations that penetrate in a thickness direction thereof, the plurality of micro-perforations being arranged to be spaced apart from each other; the backplate is equipped with at least one back of the body chamber on, every back of the body chamber all has the intercommunication mouth, and the one side that is equipped with the intercommunication mouth of backplate is located to the microperforated panel, every back of the body chamber the intercommunication mouth is relative with at least one micro-perforation to make every back of the body chamber and at least one micro-perforation intercommunication. According to the air outlet cover assembly, the noise reduction effect is good, so that the noise of the dust collector during working can be better reduced, and the overall quality and user experience of the dust collector are improved.
Description
Technical Field
The invention relates to the technical field of dust collectors, in particular to an air outlet cover assembly of a dust collector and the dust collector with the air outlet cover assembly.
Background
The dust catcher includes dust collecting device, air inlet unit and exhaust apparatus, and air inlet unit locates dust collecting device's downstream side, and the air inlet unit of dust catcher includes the motor cover and locates the motor in the motor cover, and exhaust apparatus locates air inlet unit's downstream side, and exhaust apparatus includes out the fan housing subassembly. When the dust collector works, the motor rotates to generate negative pressure in the motor cover, air with dust is sucked into the dust collecting device in a disordered mode, the dust in the air is filtered and then enters the motor cover, and finally the air returns to the atmosphere through the air outlet cover assembly.
The dust collector is a common household appliance, and the noise problem directly influences the product quality and the user experience. Motor vibration and air flow turbulence are two important causes of noise generated by the cleaner. As can be appreciated, there are motor vibration and airflow turbulence problems at the intake and airflow turbulence problems at the exhaust.
For those skilled in the art, the noise reduction problem at the air intake device is generally concerned, but the noise reduction at the exhaust device is not deeply studied, and the noise at the exhaust device is relatively high, thereby affecting the overall quality and user experience of the dust collector.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one object of the present invention is to provide an air outlet cover assembly of a vacuum cleaner, which has good noise reduction effect, so as to better reduce the noise of the vacuum cleaner during operation, and improve the overall quality and user experience of the vacuum cleaner.
The invention also provides a dust collector with the air outlet cover assembly.
The air outlet cover assembly of the dust collector comprises: the air outlet cover is internally provided with an air duct, the air duct is provided with an air inlet and an air outlet, the air inlet is suitable for being communicated with an air outlet of a motor cover of the dust collector, and the air outlet is suitable for being communicated with the external environment; amortization subassembly, amortization subassembly is located in the wind channel, amortization subassembly includes: a microperforated plate provided with a plurality of microperforations that pass through in a thickness direction thereof, the plurality of microperforations being arranged so as to be spaced apart from each other; the backplate, be equipped with at least one back of the body chamber on the backplate, every back of the body chamber all has the intercommunication mouth, microperforated panel locates the backplate be equipped with the one side of intercommunication mouth, every back of the body chamber the intercommunication mouth is relative with at least one the micro-perforation, so that every back of the body chamber with at least one the micro-perforation intercommunication.
According to the air outlet cover assembly of the dust collector, the micro-perforated structure is adopted for noise elimination and reduction, the micro-perforated structure can be specially designed according to the frequency spectrum characteristic of noise, the noise elimination and reduction effects are good, the noise of the dust collector during working can be well reduced, and the overall quality and user experience of the dust collector are improved.
In addition, the air outlet cover assembly of the dust collector according to the embodiment of the invention can also have the following additional technical characteristics:
according to one embodiment of the invention, the number of the back cavities is equal to the number of the micro-perforations, and the back cavities and the micro-perforations are communicated in a one-to-one correspondence manner.
According to one embodiment of the present invention, the number of said back cavities is smaller than the number of said micro-perforations, at least one of said back cavities being in communication with a plurality of said micro-perforations.
According to one embodiment of the invention, a plurality of said microperforations are distributed in an array.
Optionally, a plurality of said microperforations in a same row or a plurality of said microperforations in a same column are opposed to a same said back cavity.
According to one embodiment of the invention, the microperforated panel has a perforation rate ε of 5% or less, where the perforation rate ε is the ratio of the sum of the areas of the microperforations on the microperforated panel to the area of the microperforations.
According to an embodiment of the present invention, the air duct includes a plurality of stages of air ducts sequentially connected to each other, the air inlet is connected to the first stage air duct, the air outlet is connected to the last stage air duct, and the position of the noise reduction assembly disposed in the air duct includes any one of the following conditions:
the silencing component is only arranged in the last stage air duct;
the silencing assembly is only arranged in the first-stage air duct;
the silencing component is arranged in the multistage air duct.
Optionally, it includes relative first end plate and the second end plate that sets up to go out the fan housing, and locates first end plate with annular bounding wall subassembly between the second end plate, the bounding wall subassembly includes a plurality of annular bounding walls of nested from inside to outside in proper order, first end plate the second end plate with be located the most inboard the bounding wall is injectd jointly first order wind channel, all the other wind channels by first end plate the second end plate with adjacent two the bounding wall is injectd jointly, the air intake forms on the first end plate.
Optionally, the air outlet is formed in the shroud located outermost.
Optionally, the sound attenuation assembly is disposed in close proximity to an inner wall surface of the enclosure, and the back plate faces the inner wall surface of the enclosure.
Optionally, the wind channel includes tertiary wind channel, the bounding wall subassembly includes from inside to outside nested annular first bounding wall, annular second bounding wall and annular third bounding wall in proper order, first end plate the second end plate with first bounding wall prescribes a limit to first order wind channel jointly, the air intake forms on the first end plate, first end plate the second end plate first bounding wall with the second bounding wall prescribes a limit to the second wind channel jointly, first end plate the second bounding wall prescribes a limit to the third wind channel jointly.
Optionally, a plurality of the noise reduction assemblies are sequentially arranged in the air duct along the circumferential direction of the air duct.
Optionally, a plurality of clamping blocks spaced apart from each other are arranged in the air duct, and the silencing assembly is clamped between two adjacent clamping blocks.
A vacuum cleaner according to an embodiment of the second aspect of the present invention includes: a dust collecting device for collecting dust; the air inlet device comprises a motor cover and a motor arranged in the motor cover, and an air inlet of the motor cover is communicated with the dust collecting device; according to the air outlet housing assembly of the embodiment of the first aspect of the present invention, the air inlet is communicated with the air outlet of the motor housing.
According to the dust collector disclosed by the embodiment of the invention, the air outlet cover assembly of the dust collector disclosed by the embodiment of the first aspect of the invention is arranged, so that the dust collector has all the advantages of the air outlet cover assembly, the micro-perforated structure is adopted for noise reduction, the micro-perforated structure can be specially designed according to the frequency spectrum characteristic of noise, the noise reduction effect is good, the noise of the dust collector during working can be better reduced, and the integral quality and user experience of the dust collector are improved.
Optionally, the motor cover is also provided with the noise reduction assembly therein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a structure of a vacuum cleaner according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an air inlet device and an air outlet cover assembly of the vacuum cleaner according to the embodiment of the invention;
FIG. 4 is a cross-sectional view of an air inlet unit and an air outlet housing assembly of the vacuum cleaner in accordance with an embodiment of the present invention;
FIG. 5 is a schematic structural view of an air outlet cover assembly of the vacuum cleaner according to the embodiment of the invention;
FIG. 6 is a partial schematic structural view of an outlet hood assembly of a vacuum cleaner according to an embodiment of the present invention (the first end plate is not shown in the figure, and a plurality of back cavities are formed on a back plate of a silencer assembly);
FIG. 7 is a partial schematic structural view of an outlet hood assembly of a vacuum cleaner according to another embodiment of the present invention (the first end plate is not shown in the figure, and only one back cavity is provided on the back plate of the noise reduction assembly);
FIG. 8 is a schematic view of a muffler assembly according to an embodiment of the present invention;
FIG. 9 is a schematic view of a back plate of a sound attenuating assembly (with multiple back cavities in the back plate) according to one embodiment of the present invention;
FIG. 10 is a schematic view of a back plate of a sound attenuating assembly according to another embodiment of the present invention (only one back cavity is provided in the back plate);
FIG. 11 is a schematic view of a microperforated panel in accordance with an embodiment of the present invention.
Reference numerals:
an air outlet housing assembly 100;
an air outlet housing 1; an air duct 11; an air inlet 111; an air outlet 112; an air outlet 1121; a first stage duct 101; a second stage air duct 102; a third stage air duct 103; a first end plate 12; a second end plate 13; a first shroud 14; a first outlet 141; a first air outlet 1411; a second shroud 15; a second air outlet 151; a second air outlet 1511; a third surrounding plate 16; a latch 17;
a silencing component 2; a micro-perforated plate 21; a micro-perforation 211;
a back plate 22; a back cavity 221;
a cleaner 200; a dust collecting device 201; an air intake device 202; a motor cover 2021; an air inlet 20211; an air outlet 20212; a motor 2022.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An outlet hood assembly 100 of a vacuum cleaner 200 in accordance with an embodiment of the first aspect of the present invention will now be described with reference to figures 1 to 11. It should be noted that the vacuum cleaner 200 includes a dust collecting device 201, an air intake device 202 and an air exhaust device, the air intake device 202 is disposed at the downstream side of the dust collecting device 201, the air intake device 202 of the vacuum cleaner 200 includes a motor cover 2021 and a motor 2022 disposed in the motor cover 2021, the air exhaust device is disposed at the downstream side of the air intake device 202, and the air exhaust device includes the air outlet cover assembly 100. When the vacuum cleaner 200 is in operation, the motor 2022 rotates to generate negative pressure in the motor hood 2021, the air with dust is sucked into the dust collecting device 201 in a disordered manner, the dust in the air is filtered and then enters the motor hood 2021, and finally the air returns to the atmosphere through the air outlet hood assembly 100.
Referring to fig. 1 to 11, an outlet housing assembly 100 of a vacuum cleaner 200 according to an embodiment of the present invention includes: an air outlet cover 1 and a silencing component 2.
An air duct 11 is defined in the air outlet housing 1, the air duct 11 has an air inlet 111 and an air outlet 112, the air inlet 111 is adapted to communicate with an air outlet 20212 of a motor housing 2021 of the vacuum cleaner 200, the air outlet 112 is adapted to communicate with the external environment, specifically, the motor housing 2021 has an air inlet 20211 and an air outlet 20212, the air inlet 20211 of the motor housing 2021 is connected to the dust collecting device 201, so that the air with dust filtered enters the motor housing 2021, the air outlet 20212 of the motor housing 2021 is connected to the air inlet 111 of the air outlet housing 1, and the air outlet 112 of the air outlet housing 1 is adapted to communicate with the external environment, so that the air in the motor housing 2021 flows to the atmosphere through the air.
The vacuum cleaner 200 is a common household appliance, and the noise problem directly affects the product quality and the user experience. Motor vibration and air flow turbulence are two important causes of noise generated by the cleaner 200. It can be understood that there are problems of motor vibration and air flow turbulence at the air inlet 202 and air flow turbulence at the air outlet, i.e. when the air flow passes through the air duct 11 of the wind outlet housing 1, noise will be generated at the wind outlet housing 1 due to the air flow turbulence.
For those skilled in the art, the noise reduction problem at the air intake device is generally concerned, but the noise reduction at the exhaust device is not deeply studied, and the noise at the exhaust device is relatively high, thereby affecting the overall quality and user experience of the dust collector.
In order to solve the above problem, the wind outlet cover assembly 100 of the present application further includes a silencing assembly 2, specifically, the silencing assembly 2 is disposed in the wind channel 11, and the silencing assembly 2 includes a micro-perforated plate 21 and a back plate 22. The micropunch plate 21 is provided with a plurality of micropunch holes 211 penetrating in the thickness direction of the micropunch plate 21, the plurality of micropunch holes 211 are arranged at intervals, the back plate 22 is provided with at least one back cavity 221, each back cavity 221 is provided with a communication port, the micropunch plate 21 is arranged on one side of the back plate 22 provided with the communication ports, specifically, the communication ports of the back cavities 221 are arranged on the same side of the back plate 22, when the communication ports of the back cavities 221 are arranged on the first surface of the back plate 22, the micropunch plate 21 is arranged on one side of the first surface of the back plate 22, and when the communication ports of the back cavities 221 are arranged on the second surface of the back plate 22, the micropunch plate 21 is arranged on one side of the.
It is to be noted that, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The microperforations 211 used herein mean holes having a diameter of 1mm or less. The shape of the micro-perforations 211 can be arbitrarily selected, and can be, for example, circular, elliptical, polygonal, or the like.
The communication port of each back cavity 221 is opposite to at least one microperforation 211 such that each back cavity 221 communicates with at least one microperforation 211. That is, the communication port of each back cavity 221 may be opposite one microperforation 211, two microperforations 211, three microperforations 211, or more microperforations 211, the back cavity 221 communicates with one microperforation 211 when the communication port of the back cavity 221 is opposite the one microperforation 211, the back cavity 221 communicates with two microperforations 211 when the communication port of the back cavity 221 is opposite the two microperforations 211, the back cavity 221 communicates with the three microperforations 211 when the communication port of the back cavity 221 is opposite the three microperforations 211, and so on.
The noise reduction principle of the noise reduction assembly 2 is as follows: the air in the micro-perforations 211 and the air in the back cavity 221 communicated with the micro-perforations 211 form an elastic system, sound waves of noise pass through the micro-perforations 211, the sound wave energy causes the air in the micro-perforations 211 to vibrate, and the air in the micro-perforations 211 can rub against the micro-perforated plate 21 when vibrating, so that the noise energy is consumed, and the purposes of noise reduction and noise reduction are achieved. When the noise frequency and the natural frequency of the elastic system are the same, strong resonance of the air inside the micro-perforations 211 is caused, and the friction between the air inside the micro-perforations 211 and the micro-perforated plate 21 is also more severe, resulting in better noise reduction.
Therefore, in the design process, the thickness and the perforation rate of the micro-perforated plate 21, the shape and the size of the micro-perforated hole 211, the shape and the size of the back cavity 221 and other parameters can be designed according to the noise spectrum characteristics in the air outlet cover 1, so that the noise frequency is approximately the same as the natural frequency of the elastic system, and the better noise reduction effect can be achieved. Adopt the micro-perforation structure to go out fan housing 1 department and carry out the amortization and fall the noise, can carry out the special design micro-perforation structure according to the spectral characteristic of the noise of fan housing 1 department, the amortization noise reduction effect is good.
According to the air outlet cover assembly 100 of the dust collector 200, the micro-perforated structure is adopted at the air outlet cover 1 for noise reduction, the micro-perforated structure can be specially designed according to the frequency spectrum characteristic of the noise at the air outlet cover 1, the noise reduction effect is good, the noise of the dust collector 200 during working can be better reduced, and the overall quality and the user experience of the dust collector 200 are improved.
The material of the microperforated panel 21 and the back plate 22 may be arbitrarily selected, for example, both the microperforated panel 21 and the back plate 22 may be plastic or metal.
In one embodiment of the present invention, the number of the back cavities 221 is equal to the number of the micro-perforations 211, one communication port corresponds to one micro-perforation 211, and the back cavities 221 and the micro-perforations 211 are in one-to-one communication. Thus, the noise reduction effect of the noise reduction assembly 2 is better.
In one embodiment of the present invention, the number of back cavities 221 is less than the number of microperforations 211, with at least one back cavity 221 communicating with a plurality of microperforations 211. In this case, the two embodiments are also included, and the number of the micro-perforations 211 correspondingly communicated with each back cavity 221 is all equal; or the number of micro-perforations 211 communicated with each back cavity 221 is not completely equal. For example, when the number of the micro-perforations 211 is one hundred and the number of the back cavities 221 is fifty, it may be that every two micro-perforations 211 are correspondingly communicated with one back cavity 221, that is, the number of the micro-perforations 211 correspondingly communicated with each back cavity 221 is all equal; or ten back cavities 221 are respectively and correspondingly communicated with two micro-perforated holes 211, twenty back cavities 221 are respectively and correspondingly communicated with three micro-perforated holes 211, and twenty back cavities 221 are respectively and correspondingly communicated with one micro-perforated hole 211, that is, the number of the micro-perforated holes 211 correspondingly communicated with each back cavity 221 is not completely equal.
In a specific example of the present invention, as shown in fig. 7, 10-11, the back plate 22 is provided with only one back cavity 221, and all the micro-perforations 211 on the micro-perforated plate 21 are correspondingly communicated with the one back cavity 221, so that the production and processing of the back plate 22 are simple and convenient.
In an alternative embodiment of the present invention, as shown in fig. 6-7 and 8 and 11, a plurality of microperforations 211 are arranged in an array. Therefore, the structure of the micro-perforated plate 21 is regular, and the noise reduction effect is good.
Further, a plurality of micro-perforations 211 in the same row or a plurality of micro-perforations 211 in the same column are opposite to the same back cavity 221. Specifically, the plurality of micro-perforations 211 located in the same row communicate with the same back cavity 221, or the plurality of micro-perforations 211 located in the same column communicate with the same back cavity 221. Therefore, the production and the manufacture of the back plate 22 are convenient, and the noise reduction effect of the noise reduction assembly 2 is good.
Alternatively, adjacent rows of microperforations 211 on microperforated panel 21 communicate with the same back cavity 221, or adjacent columns of microperforations 211 on microperforated panel 21 communicate with the same back cavity 221, thereby further simplifying the manufacturing of backplane 22.
In a preferred embodiment of the present invention, as shown in fig. 6, 9 and 11, the plurality of micro-perforations 211 and the plurality of back cavities 221 are distributed in an array, so that the overall structure of the noise reduction assembly 2 is beautiful and the noise reduction effect is better.
Of course, the arrangement of the plurality of micro-perforations 211 in the present application is not limited to the above array arrangement, and may also be formed as a ring arrangement, for example, and the arrangement of the plurality of micro-perforations 211 is not limited in the present application. Similarly, the arrangement of the plurality of back cavities 221 in the present application is not limited to the array arrangement described above, and may also be formed into a ring-shaped arrangement, for example, and the arrangement of the plurality of back cavities 221 is not limited in the present application.
In one embodiment of the present invention, microperforated panel 21 has a perforation rate ε of 5% or less, where the perforation rate ε is the ratio of the sum of the areas of microperforations 211 on microperforated panel 21 to the area of microperforated panel 21. Therefore, the noise reduction effect of the noise reduction assembly 2 is better.
The connection mode between the micro-perforated plate 21 and the back plate 22 can be selected arbitrarily as required, the micro-perforated plate 21 and the back plate 22 can be detachably connected (for example, connected by a snap structure or a threaded fastener, etc.), the micro-perforated plate 21 and the back plate 22 can be non-detachably connected (for example, connected by bonding or welding, etc.), and the micro-perforated plate 21 and the back plate 22 can also be an integral piece.
In an embodiment of the present invention, the air duct 11 includes multiple stages of air ducts sequentially connected, the air inlet 111 is connected to the first stage air duct 101, the air outlet 112 is connected to the last stage air duct, and the position of the noise reduction assembly 2 disposed in the air duct 11 includes any one of the following conditions:
the silencing component 2 is only arranged in the last stage of air duct;
the silencing component 2 is only arranged in the first-stage air duct 101;
the silencing component 2 is arranged in the multi-stage air duct.
That is, in an alternative example of the present invention, the silencing assembly 2 is only disposed in the final stage air duct;
in another alternative example of the present invention, the silencing assembly 2 is provided only in the first-stage air duct 101;
in yet another alternative example of the present invention, the acoustic abatement assembly 2 is disposed within a multi-stage air duct. For example, the noise reduction assembly 2 may be provided in both the first stage air duct 101 and the last stage air duct. Therefore, the noise reduction effect at the air outlet cover 1 is better.
In addition, through setting up multistage wind channel, the air current that gets into in the air-out cover 1 by air intake 111 flows through multistage wind channel in proper order after, flows out by air outlet 112 again, sets up multistage wind channel and plays the effect of sound insulation on the one hand, and on the other hand realizes that the air current is at the labyrinth flow in the air-out cover 1, has prolonged the flow path of air current, can make the turbulent air current fully stabilize and discharge after getting off like this, can further reduce the noise of air-out cover 1 department from this.
Further, go out fan housing 1 including relative first end plate 12 and the second end plate 13 that sets up to and locate the annular bounding wall subassembly between first end plate 12 and the second end plate 13, the bounding wall subassembly includes a plurality of annular bounding walls of nested from inside to outside in proper order, first end plate 12, second end plate 13 and the bounding wall that is located the innermost limit jointly first order wind channel 101, all the other wind channels are limited jointly by first end plate 12, second end plate 13 and two adjacent bounding walls, and air intake 111 forms on first end plate 12. Alternatively, as shown in fig. 5-7, the outlet vents 112 are formed on the outermost shroud. At this time, the air outlet cover 1 forms axial air inlet and circumferential air outlet, which is beneficial to discharging the turbulent air flow in the air duct 11 after being stabilized. Of course, the present application is not limited thereto, and the air outlet 112 may also be formed on the second end plate 13, and at this time, the air outlet housing 1 forms axial air inlet and axial air outlet.
For example, in one specific example of the present invention, as shown in fig. 5-7, the duct 11 includes a tertiary duct, the enclosure assembly includes a first annular enclosure 14, a second annular enclosure 15, and a third annular enclosure 16 nested from inside to outside, the first end plate 12, the second end plate 13, and the first enclosure 14 collectively define a primary duct 101, the air inlet 111 is formed in the first end plate 12, the second end plate 13, the first enclosure 14, and the second enclosure 15 collectively define a secondary duct 102, and the first end plate 12, the second end plate 13, the second enclosure 15, and the third enclosure 16 collectively define a tertiary duct 103 (the last-stage duct described above). First level wind channel 101, second level wind channel 102 and tertiary wind channel 103 inlay from inside to outside in proper order and establish, specifically, first level wind channel 101 inlays and locates in second level wind channel 102, second level wind channel 102 inlays and locates in tertiary wind channel 103, air intake 111 forms on first end plate 12 and communicates with first level wind channel 101, be equipped with the first air outlet 141 with second level wind channel 102 intercommunication on the first bounding wall 14, be equipped with the second air outlet 151 with tertiary wind channel 103 intercommunication on the second bounding wall 15, air outlet 112 is formed on third bounding wall 16.
When the vacuum cleaner 200 works, after flowing through the air intake device, the airflow enters the first-stage air duct 101 through the air inlet 111, after flowing through the first-stage air duct 101, the airflow enters the second-stage air duct 102 through the first air outlet 141, flows along the second-stage air duct 102, then enters the third-stage air duct 103 through the second air outlet 151, flows through the third-stage air duct 103, and finally flows into the atmosphere through the air outlet 112. After entering the air outlet housing 1 through the air inlet 111, the airflow sequentially flows through the first-stage air duct 101, the second-stage air duct 102 and the third-stage air duct 103 and then flows out of the air outlet 112. The air outlet cover 1 is internally provided with an air channel structure with three nested air channels, so that on one hand, a good sound insulation effect can be achieved, on the other hand, the labyrinth flow of air flow in the air outlet cover 1 can be realized, the flow path of the air flow is prolonged, the disordered air flow can be fully stabilized and then discharged, and the noise at the air outlet cover 1 can be further reduced.
Alternatively, as shown in fig. 5 to 7, the first air outlet 141 includes a plurality of first air outlet holes 1411, the plurality of first air outlet holes 1411 are uniformly distributed on the first enclosing plate 14 in the axial direction and the circumferential direction, the second air outlet 151 includes at least one elongated second air outlet hole 1511 extending in the axial direction, and the air outlet 112 includes at least one elongated air outlet hole 1121 extending in the axial direction. In the specific example shown in fig. 5-7, the second air outlet 151 comprises two second air outlet holes 1511 opposite to each other with respect to the center of the housing 1, and the air outlet 112 comprises two air outlet holes 1121 opposite to each other with respect to the center of the housing 1.
Preferably, the air outlets of the two adjacent air ducts are offset from each other, for example, in the specific example shown in fig. 5-7, the second air outlet 151 and the air outlet 112 are offset from each other, so that the flow path of the air flow can be extended, and the turbulent air flow can be discharged after being sufficiently stabilized, thereby further reducing the noise at the air outlet housing 1.
In some examples, only the first stage duct 101 is provided with the silencer assembly 2; in some examples, only the second stage air duct 102 is provided with the silencer assembly 2; in some examples, only the third stage air duct 103 is provided with the noise reduction assembly 2 therein; in some examples, a noise reduction assembly 2 is disposed in both the first-stage air duct 101 and the second-stage air duct 102; in some examples, the noise reduction assembly 2 is disposed in both the first stage air duct 101 and the third stage air duct 103; in some examples, the second-stage air duct 102 and the third-stage air duct 103 are both provided with the silencing assembly 2 therein; in some examples, the first stage air duct 101, the second stage air duct 102, and the third stage air duct 103 each have a noise reduction assembly 2 disposed therein.
In an alternative example of the invention, the acoustic attenuation modules 2 are positioned against the interior wall surface of the enclosure with the back panel 22 facing the interior wall surface of the enclosure. The "inner wall surface of the shroud" referred to herein means a wall surface of the shroud on a side facing the center of the outlet cover 1. Specifically, in the example shown in fig. 5 to 7, the noise reduction assembly 2 is provided in the third-stage air duct 103, and the noise reduction assembly 2 is provided to be attached to the inner wall surface of the third shroud 16. As can be understood, when the silencing assembly 2 is arranged in the first-stage air duct 101, the silencing assembly 2 is attached to the inner wall surface of the first enclosing plate 14; when the silencing assembly 2 is arranged in the second-stage air duct 102, the silencing assembly 2 is arranged to be attached to the inner wall surface of the second enclosing plate 15. Through laminating amortization subassembly 2 in the internal face setting of bounding wall for the amortization noise reduction effect is better.
As shown in fig. 6 to 7, the shroud is formed in a circular ring-shaped structure, and the microperforated plate 21 and the back plate 22 are each formed in an arc-like structure. Make amortization subassembly 2 and bounding wall better laminating together like this, the amortization noise reduction effect is better.
In one embodiment of the present invention, a plurality of noise reduction assemblies 2 are sequentially disposed in the air duct 11 along the circumferential direction thereof. For example, in the example shown in fig. 6 to 7, a plurality of noise reduction assemblies 2 are sequentially provided in the third-stage air duct 103 along the circumferential direction thereof, and each of the plurality of noise reduction assemblies 2 is provided to be attached to the inner wall surface of the third shroud 16. All there is noise cancelling assembly 2 to carry out the amortization to the noise in the wind channel 11 at each angle in wind channel 11 like this, and noise cancelling and noise reducing effect is good.
In an embodiment of the present invention, a plurality of clamping blocks 17 are disposed in the air duct 11 and spaced apart from each other, and the noise reduction assembly 2 is clamped between two adjacent clamping blocks 17, so that the noise reduction assembly 2 is mounted and fixed in the air duct 11, and is convenient to mount and dismount. For example, in the examples shown in fig. 6 to 7, a plurality of blocks 17 are provided in the third-stage air duct 103, and the noise reduction assembly 2 is clamped between two adjacent blocks 17, so that the noise reduction assembly 2 is installed and fixed in the third-stage air duct 103. Preferably, the plurality of blocks 17 are disposed adjacent to the inner wall surface of the third enclosing plate 16, and when the noise reduction assembly 2 is clamped between two adjacent blocks 17, the noise reduction assembly 2 is just attached to the inner wall surface of the third enclosing plate 16.
It should be noted that the installation position of the noise reduction assembly 2 in each stage of the air duct is not limited to the arrangement of the inner wall surface attached to the enclosure in the above embodiment, and the noise reduction assembly 2 may be arranged to be attached to any wall surface of each stage of the air duct, for example, when the noise reduction assembly 2 is arranged in the third stage air duct 103, the noise reduction assembly 2 may be arranged to be attached to not only the inner wall surface of the third enclosure 16 but also the outer wall surface of the second enclosure 15, the inner wall surface of the first end plate 12, or the inner wall surface of the second end plate 13. Preferably, all wall surfaces of each stage of air ducts are provided with the noise reduction assemblies 2 in a fitting manner, for example, when the noise reduction assemblies 2 are arranged in the third stage air duct 103, the noise reduction assemblies 2 are arranged on the inner wall surface of the third enclosing plate 16, the outer wall surface of the second enclosing plate 15, the inner wall surface of the first end plate 12 and the inner wall surface of the second end plate 13 in a fitting manner. Noise in the air duct 11 can be silenced by each angle, and the silencing and noise reducing effects are better.
A vacuum cleaner 200 according to a second aspect of the embodiment of the present invention will now be described with reference to figures 1 to 4. The vacuum cleaner 200 described in the present application may be a hand-held vacuum cleaner 200, or may be an upright vacuum cleaner 200 or a canister vacuum cleaner 200.
As shown in fig. 1 to 4, the vacuum cleaner 200 includes a dust collecting device 201 for collecting dust, an air intake device 202, and the hood assembly 100 according to the above-described first embodiment of the present invention.
The air inlet device 202 comprises a motor cover 2021 and a motor 2022 arranged in the motor cover 2021, the motor cover 2021 is provided with an air inlet 20211 and an air outlet 20212, and the air inlet 20211 of the motor cover 2021 is communicated with the dust collecting device 201, so that the air after dust is filtered enters the motor cover 2021. The air inlet 111 of the air outlet housing 1 is communicated with the air outlet 20212 of the motor housing 2021, and the air outlet 112 of the air outlet housing 1 is suitable for communicating with the external environment so that the air in the motor housing 2021 flows to the atmosphere through the air outlet housing 1. The dust collecting device 201 includes a dust bag or a dust cup.
According to the dust collector 200 of the embodiment of the present invention, by providing the air-out cover assembly 100 of the dust collector 200 according to the above-mentioned first aspect of the present invention, the dust collector 200 has all the advantages of the air-out cover assembly 100, and the micro-perforated structure is adopted to perform noise reduction, so that the micro-perforated structure can be specially designed according to the spectral characteristics of noise, and the noise reduction effect is good, thereby better reducing the noise of the dust collector 200 during operation, and improving the overall quality and user experience of the dust collector 200.
Optionally, a noise reduction assembly 2 is also provided within the motor cover 2021. The motor cover 2021 is a structure of the discharge machine 2022, and the noise reduction unit 2 is provided in the motor cover 2021, and is very important to reduce noise transmitted from the motor 2022. In the related art, the noise of the motor transmitted from the motor cover is reduced by wrapping the motor cover with the sound absorption cotton. It makes an uproar to fall with inhaling cotton parcel motor of sound, has following shortcoming: the motor is easy to heat, and if the motor is wrapped by the material of the sound-absorbing cotton, the heat is not easy to discharge, so that the temperature of the motor is easily overhigh and the service life of the motor is easily influenced; the appearance of the sound-absorbing cotton is difficult to see, and the appearance and the technological sense of the dust collector are influenced; the sound absorption cotton is a ready-made product and cannot be specially designed according to the frequency spectrum characteristic of the motor noise so as to achieve a better sound absorption effect.
In this embodiment, the motor 2022 is silenced and denoised by adopting a micro-perforated structure, and the silencing and denoising principle is as follows: the air in the micro-perforations 211 and the air in the back cavity 221 communicated with the micro-perforations 211 form an elastic system, sound waves of noise pass through the micro-perforations 211, the sound wave energy causes the air in the micro-perforations 211 to vibrate, and the air in the micro-perforations 211 can rub against the micro-perforated plate 21 when vibrating, so that the noise energy is consumed, and the purposes of noise reduction and noise reduction are achieved. When the noise frequency in the motor cover 2021 is the same as the natural frequency of the elastic system, strong resonance of the air in the micro-perforated holes 211 is caused, and the friction between the air in the micro-perforated holes 211 and the micro-perforated plate 21 is more severe, so that the noise reduction effect is better. Therefore, during design, parameters such as the thickness and the perforation rate of the micro-perforated plate 21 in the motor cover 2021, the shape and the size of the micro-perforated hole 211, the shape and the size of the back cavity 221 and the like can be designed according to the noise spectrum characteristics in the motor cover 2021, so that the noise frequency in the motor cover 2021 is approximately the same as the natural frequency of the elastic system of the noise reduction assembly 2, and a better noise reduction effect can be achieved.
According to the dust collector 200 provided by the embodiment of the invention, the motor cover 2021 and the air outlet cover 1 are both provided with the silencing components 2, the noise at the motor cover 2021 and the noise at the air outlet cover 1 are silenced by adopting a micro-perforated structure, the micro-perforated structure of the silencing component 2 in the motor cover 2021 can be specially designed according to the spectral characteristic of the noise at the motor cover 2021, and the micro-perforated structure of the silencing component 2 in the air outlet cover 1 can be specially designed according to the spectral characteristic of the noise at the air outlet cover 1, so that the noise at the motor cover 2021 and the air outlet cover 1 can be better reduced, and the overall quality and the user experience of the dust collector 200 can be better improved.
In the description of the present invention, it is to be understood that the terms "axial," "radial," "circumferential," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.
In the description of the present invention, the features of the "first end panel 12", "second end panel 13", "first enclosure 14", "second enclosure 15", "third enclosure 16", "first outlet 141", and "second outlet 151" may explicitly or implicitly include one or more corresponding features.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. The utility model provides an air-out cover subassembly of dust catcher which characterized in that includes:
the air outlet cover is internally provided with an air duct, the air duct is provided with an air inlet and an air outlet, the air inlet is suitable for being communicated with an air outlet of a motor cover of the dust collector, and the air outlet is suitable for being communicated with the external environment;
amortization subassembly, amortization subassembly is located in the wind channel, amortization subassembly includes:
a microperforated plate provided with a plurality of microperforations that pass through in a thickness direction thereof, the plurality of microperforations being arranged so as to be spaced apart from each other;
the backplate, be equipped with at least one back of the body chamber on the backplate, every back of the body chamber all has the intercommunication mouth, microperforated panel locates the backplate be equipped with the one side of intercommunication mouth, every back of the body chamber the intercommunication mouth is relative with at least one the micro-perforation, so that every back of the body chamber with at least one the micro-perforation intercommunication.
2. An outlet housing assembly of a vacuum cleaner as claimed in claim 1, wherein the number of said back cavities is equal to the number of said micro-perforations, and said back cavities and said micro-perforations are in one-to-one correspondence.
3. An outlet housing assembly according to claim 1, wherein the number of said rear cavities is less than the number of said micro-perforations, at least one of said rear cavities communicating with a plurality of said micro-perforations.
4. An outlet housing assembly according to claim 1, wherein a plurality of said micro-perforations are arranged in an array.
5. An outlet housing assembly according to claim 4, wherein a plurality of said microperforations in a common row or a plurality of said microperforations in a common column are disposed opposite a common said rear chamber.
6. An outlet hood assembly of a vacuum cleaner according to claim 1, wherein the perforated sheet has a perforation rate e ≤ 5%, wherein the perforation rate e is a ratio of a sum of areas of the plurality of microperforations on the perforated sheet to an area of the microperforations.
7. The air outlet cover assembly of the vacuum cleaner as claimed in claim 1, wherein the air duct includes a plurality of stages of air ducts which are sequentially connected, the air inlet is connected to the first stage air duct, the air outlet is connected to the last stage air duct, and the position of the noise reduction assembly in the air duct includes any one of the following conditions:
the silencing component is only arranged in the last stage air duct;
the silencing assembly is only arranged in the first-stage air duct;
the silencing component is arranged in the multistage air duct.
8. An air-out cover assembly of a vacuum cleaner as claimed in claim 7, wherein the air-out cover comprises a first end plate and a second end plate which are arranged oppositely, and an annular enclosure assembly arranged between the first end plate and the second end plate, the enclosure assembly comprises a plurality of annular enclosures which are nested in sequence from inside to outside, the first end plate, the second end plate and the enclosure which is located at the innermost side jointly define the first-stage air duct, the rest air ducts are defined by the first end plate, the second end plate and two adjacent enclosures jointly, and the air inlet is formed in the first end plate.
9. An outlet housing assembly according to claim 8, wherein the outlet is formed in the outermost shroud.
10. An outlet housing assembly according to claim 8, wherein the silencer assembly is arranged to fit against an inner wall surface of the shroud, and the back panel faces the inner wall surface of the shroud.
11. An air outlet cover assembly of a vacuum cleaner as claimed in claim 8, wherein the air duct includes a tertiary air duct, the enclosure assembly includes a first annular enclosure, a second annular enclosure and a third annular enclosure nested from inside to outside in sequence, the first end plate, the second end plate and the first enclosure together define a primary air duct, the air inlet is formed in the first end plate, the second end plate, the first enclosure and the second enclosure together define a secondary air duct, and the first end plate, the second enclosure and the third enclosure together define a tertiary air duct.
12. An air outlet housing assembly of a vacuum cleaner as claimed in claim 1, wherein a plurality of said noise reduction assemblies are sequentially arranged in said air duct along a circumferential direction thereof.
13. The exhaust hood assembly of the vacuum cleaner as claimed in claim 1, wherein a plurality of clamping blocks are disposed in the air duct and spaced apart from each other, and the noise reduction assembly is clamped between two adjacent clamping blocks.
14. A vacuum cleaner, comprising:
a dust collecting device for collecting dust;
the air inlet device comprises a motor cover and a motor arranged in the motor cover, and an air inlet of the motor cover is communicated with the dust collecting device;
an outlet housing assembly according to any of claims 1 to 13, wherein the air inlet communicates with an air outlet of the motor housing.
15. An outlet housing assembly according to claim 14, wherein the sound deadening assembly is also disposed within the motor housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250715.7A CN111096708B (en) | 2018-10-25 | 2018-10-25 | Air outlet cover assembly of dust collector and dust collector with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811250715.7A CN111096708B (en) | 2018-10-25 | 2018-10-25 | Air outlet cover assembly of dust collector and dust collector with same |
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| Publication Number | Publication Date |
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| CN111096708A true CN111096708A (en) | 2020-05-05 |
| CN111096708B CN111096708B (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811250715.7A Active CN111096708B (en) | 2018-10-25 | 2018-10-25 | Air outlet cover assembly of dust collector and dust collector with same |
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| Country | Link |
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| CN (1) | CN111096708B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343500A (en) * | 2021-12-31 | 2022-04-15 | 深圳市杉川机器人有限公司 | Working base station |
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| CN2248532Y (en) * | 1995-08-28 | 1997-03-05 | 周进顺 | Device for damping and water-proof for nozzle of aspirator |
| CN1762296A (en) * | 2005-11-10 | 2006-04-26 | 苏州金莱克清洁器具有限公司 | Noise absorption unit of dust collector |
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|---|---|
| CN111096708B (en) | 2022-03-01 |
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