CN115405570A - Noise reduction fan assembly and cleaning robot - Google Patents
Noise reduction fan assembly and cleaning robot Download PDFInfo
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- CN115405570A CN115405570A CN202211034730.4A CN202211034730A CN115405570A CN 115405570 A CN115405570 A CN 115405570A CN 202211034730 A CN202211034730 A CN 202211034730A CN 115405570 A CN115405570 A CN 115405570A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 16
- 229920000742 Cotton Polymers 0.000 claims abstract description 75
- 230000030279 gene silencing Effects 0.000 claims abstract description 67
- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000035939 shock Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003584 silencer Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a noise reduction fan assembly and a cleaning robot, wherein the noise reduction fan assembly comprises a fan shell and a fan, the fan is arranged in the fan shell, and the fan is connected to the inner wall of the fan shell; the air inlet and/or the air outlet of the fan are/is provided with silencing cotton, and the flow directions of the inlet airflow flowing into the fan and/or the exhaust airflow discharged by the fan on the flow paths at least at two ends are different. Above-mentioned fan subassembly of making an uproar falls sets up the fan in the fan shell, sets up the amortization cotton through the air intake and/or the air outlet at the fan, and the noise of air intake and/or air outlet is absorbed to the amortization cotton, reduces the noise of fan air intake and/or air outlet, reduces the noise that uses the fan to produce, reduces to cause noise pollution to the place that uses the fan. The noise reduction fan assembly provided by the invention is applied to a cleaning robot, so that the noise generated in the use process of the cleaning robot is reduced, and the user experience comfort level is improved.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a noise reduction fan assembly and a cleaning robot.
Background
The fan can produce the noise because of its self vibrations and air current drunkenness at the working process, causes noise pollution to the place that uses the fan. The existing cleaning robot comprises a storage box and a fan communicated with the storage box, wherein the fan is used for sucking sundries or water flow on the ground into the storage box, so that the work of cleaning the ground is completed. However, the cleaning machine is prone to generate loud noise during use, which affects the user experience.
Disclosure of Invention
Based on this, it is necessary to provide a noise reduction fan assembly for solving the problem of noise generated during the operation of the fan.
A noise reducing fan assembly comprising:
a fan casing;
the fan is arranged in the fan shell and connected to the inner wall of the fan shell;
the air inlet and/or the air outlet of the fan are/is provided with silencing cotton, and the flow directions of the inlet airflow flowing into the fan and/or the exhaust airflow discharged by the fan on at least two sections of flow paths are different.
In one embodiment, the air inlet is provided with a first silencing piece, the first silencing piece comprises first silencing cotton, the first silencing cotton is enclosed to form an inner cavity, the inner cavity is communicated with the air inlet in a fluid mode, and the air inlet can penetrate through the first silencing cotton to flow into the inner cavity and flow into the air inlet.
In one embodiment, the first silencing element further includes a supporting element disposed on a wall of the inner cavity, the supporting element is in a honeycomb shape, a first opening in fluid communication with the air inlet is disposed at an end of the supporting element facing the air inlet, and the intake airflow passes through the first silencing cotton, flows into the supporting element, and flows into the air inlet through the first opening.
In one embodiment, the first silencing piece is of a cylindrical structure, a second opening which is in fluid communication with the air inlet is arranged at the end part, facing the air inlet, of the first silencing cotton, and the first opening, the second opening and the air inlet are in two-to-two communication.
In one embodiment, the fan casing comprises a casing and a partition board arranged in the casing, the partition board divides the casing into a first cavity and a second cavity, a through hole is formed in the partition board and is communicated with the first cavity and the second cavity, the fan is arranged in the second cavity, an exhaust hole is formed in the wall of the first cavity, the first silencing piece penetrating through the partition board is partially located in the first cavity, partially located in the second cavity and connected to the air inlet, and the intake airflow penetrates through the first silencing cotton from one side deviating from the second cavity and flows into the inner cavity and the air inlet.
In one embodiment, the fan casing further comprises an end casing connected to the outer casing, the end casing is arranged on one side away from the second cavity, one end, away from the second cavity, of the first silencing piece extends into the end casing, an air inlet hole is formed in the end casing, and the intake airflow flows into the end casing from the air inlet hole, passes through the first silencing cotton, flows into the inner cavity and flows into the air inlet.
In one embodiment, the air outlet and an end wall of the second chamber facing away from the first chamber have a gap.
In one embodiment, the wall of the first chamber and/or the wall of the second chamber is provided with a second sound-deadening piece, and the second sound-deadening piece comprises second sound-deadening cotton.
In one embodiment, the fan casing comprises a guide plate, the guide plate is arranged between the side wall of the first cavity and the first silencing cotton and is positioned between the exhaust hole and the through hole, and the guide plate is used for guiding the exhaust airflow to flow around the first silencing cotton and then to be exhausted from the exhaust hole.
The invention also provides a cleaning robot which comprises a box body and the noise reduction fan assembly, wherein the fan shell is installed in the box body.
Above-mentioned fan subassembly of making an uproar falls sets up the fan in the fan shell, sets up the amortization cotton through the air intake and/or the air outlet at the fan, and the noise of air intake and/or air outlet is absorbed to the amortization cotton, reduces the noise of fan air intake and/or air outlet, and when reducing the use fan, the noise that air inlet flow and exhaust air current flow produced, and then reduces to cause noise pollution to the place that uses the fan. Moreover, the inlet airflow to the fan and/or the exhaust airflow discharged by the fan have different flow directions in at least two flow paths, so that the noise generated by the inlet airflow and/or the exhaust airflow can be reduced. The noise reduction fan assembly provided by the invention is applied to a cleaning robot, so that the noise generated in the use process of the cleaning robot is reduced, and the user experience comfort level is improved.
Drawings
Fig. 1 is a schematic structural diagram of a noise reduction fan according to an embodiment of the present invention;
fig. 2 is a first cross-sectional view of a noise reduction fan according to an embodiment of the present invention;
FIG. 3 is a second cross-sectional view of a noise reduction blower in accordance with an embodiment of the present invention;
FIG. 4 is a third cross-sectional view of a noise reduction blower in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a housing according to an embodiment of the present invention.
In the figure:
100. a fan casing; 110. a housing; 111. a first chamber; 1111. an exhaust hole; 112. a second chamber; 120. a partition plate; 121. a through hole; 130. an end shell; 131. an air inlet; 140. a baffle;
200. a fan; 210. an air inlet; 220. an air outlet;
300. a first noise reducing member; 310. first silencing cotton; 320. a support member;
400. a second noise dampening member; 410. second silencing cotton; 420. a rubber member; 430. a metal member;
500. an exhaust pipe;
600. a shock-absorbing pad.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The embodiment of the invention provides a noise reduction fan assembly, please refer to fig. 1 and fig. 2, the noise reduction fan assembly comprises a fan shell 100 and a fan 200, the fan 200 is arranged in the fan shell 100, and the fan 200 is connected to the inner wall of the fan shell 100; the air inlet 210 and/or the air outlet 220 of the blower 200 are/is provided with silencing cotton, and the flow directions of the inlet air flow flowing into the blower 200 and/or the exhaust air flow discharged by the blower 200 at least on the flow paths at the two ends are different.
According to the noise reduction fan assembly, the fan 200 is arranged in the fan shell 100, and the silencing cotton is arranged at the air inlet 210 and/or the air outlet 220 of the fan 200, so that the silencing cotton absorbs noise of the air inlet 210 and/or the air outlet 220, noise of the air inlet 210 and/or the air outlet 220 of the fan 200 is reduced, noise generated by air inlet flow and exhaust flow flowing 200 when the fan is used is reduced, and noise pollution to a place where the fan 200 is used is further reduced. Moreover, the difference in flow direction between the intake airflow flowing into the fan 100 and/or the exhaust airflow discharged from the fan 100 in at least two flow paths can also reduce noise generated by the flow of the intake airflow and/or the exhaust airflow. The noise reduction fan assembly provided by the embodiment is applied to the cleaning robot, noise generated in the using process of the cleaning robot is reduced, and the user experience comfort level is improved.
Referring to fig. 2 and 3, in some embodiments, the air inlet 210 is provided with a first silencing element 300, the first silencing element 300 includes a first silencing cotton 310, the first silencing cotton 310 encloses to form an inner cavity, the inner cavity is in fluid communication with the air inlet 210, and the intake air flow can flow into the inner cavity through the first silencing cotton 310 and flow into the air inlet 210. By arranging the first silencing cotton 310 at the air inlet 210, the first silencing cotton 310 is enclosed into an inner cavity, the inner cavity is in fluid communication with the air inlet 210, the intake airflow passes through the first silencing cotton 310 and flows into the inner cavity, and then flows into the air inlet 210 through the inner cavity, and the first silencing cotton 310 is utilized to absorb noise generated by the flow of the intake airflow entering the air inlet 210 of the fan 200. And the air current of admitting air passes first amortization cotton 310, has increased the cotton 310 sound absorption effect of first amortization, has improved noise reduction.
Referring to fig. 2 and 3, in some embodiments, the first silencer 300 further includes a supporting member 320 disposed on a wall of the inner cavity, the supporting member 320 is honeycomb-shaped, an end of the supporting member 320 facing the air inlet 210 is provided with a first opening in fluid communication with the air inlet 210, and the intake air flows into the supporting member 320 through the first silencing cotton 310 and flows into the air inlet 210 through the first opening. Set up support piece 320 at the chamber wall of inner chamber, utilize support piece 320 to support first amortization cotton 310, set up support piece 320 into honeycomb structure moreover, support piece 320 not only can support first amortization cotton 310, still has certain noise reduction ability, improves the noise reduction effect of first amortization piece 300. The end of the support member 320 facing the air inlet 210 is provided with a first opening, and the intake airflow outside the first silencing cotton 310 sequentially passes through the first silencing cotton 310 and enters the support member 320, and then flows to the intake end of the fan 200 through the first opening on the support member 320.
Specifically, the supporting member 320 is made of a metal material, a plurality of air holes are formed in the supporting member 320, and the intake air flows into the supporting member 320 through the first silencing cotton 310 and the air holes and then flows out through the first opening.
In some embodiments, the supporting member 320 is wrapped in the inner cavity of the first sound absorption cotton 310, the two ends of the first sound absorption cotton 310 are sealed, the intake airflow can only flow into the supporting member 320 through the side wall of the first sound absorption cotton 310, and the end of the first sound absorption cotton 310 facing the intake vent 210 can further absorb the vibration generated by the operation of the fan 200.
Referring to fig. 2 and 3, in some embodiments, the first silencing element 300 is a cylinder, and the end of the first silencing cotton 310 facing the air inlet 210 is provided with a second opening in fluid communication with the air inlet 210, and the first opening, the second opening and the air inlet 210 are in two-to-two communication. Set up first amortization piece 300 to cylindrical structure, first amortization is cotton 310 and support piece 320 and is cylindrical structure, and first amortization is cotton 310 parcel outside support piece 320, has seted up the second opening at first amortization cotton 310 towards air intake 210 end correspondence first opening, and the air current of admitting air passes first amortization cotton 310 and flows into support piece 320 in, the air intake 210 of the first opening of rethread and second opening flow direction fan 200.
It can be appreciated that providing a second opening corresponding to the first opening increases the flow rate of the intake airflow and facilitates the intake airflow to flow into the intake vent 210. In some embodiments, the second opening is not formed, the intake airflow passes through the first silencing cotton 310 and the air holes of the support 320 and flows into the support 320, and the intake airflow passes through the first opening and then flows into the air inlet 210 through the end of the first silencing cotton 310, so as to further absorb sound and reduce noise generated by the intake airflow.
Referring to fig. 2 and 3, in some embodiments, the fan case 100 includes a housing 110 and a partition 120 disposed in the housing 110, the partition 120 divides the housing 110 into a first cavity 111 and a second cavity 112, the partition 120 is provided with a through hole 121, the through hole 121 communicates the first cavity 111 and the second cavity 112, the fan 200 is disposed in the second cavity 112, the wall of the first cavity 111 is provided with an exhaust hole 1111, a portion of the first silencing element 300 passing through the partition 120 is located in the first cavity 111, a portion of the first silencing element is located in the second cavity 112 and is connected to the air inlet 210, and an intake airflow passes through the first silencing cotton 310 from a side away from the second cavity 112 and flows into the inner cavity and flows into the air inlet 210. By arranging the partition plate 120 in the housing 110, the housing 110 is divided into the first cavity 111 and the second cavity 112, the air outlet 1111 is formed in the cavity wall of the first cavity 111, the fan 200 is arranged in the second cavity 112, and the exhaust air flow discharged from the air outlet 220 of the fan 200 sequentially passes through the second cavity 112, the first cavity 111 and the air outlet 1111 to flow out. The first silencing element 300 penetrates through the housing 110, a part of the first silencing element is located in the first cavity 111, a part of the first silencing element extends into the second cavity 112 and is connected with the air inlet 210 of the fan 200, and exhaust air can flow into the support element 320 through the first silencing cotton 310 passing through the first silencing element 300 and the air vents on the support element 320 and then flow into the fan 200 through the first opening and the second opening.
Referring to fig. 2 and 3, in some embodiments, the fan casing 100 further includes an end casing 130 connected to the outer casing 110, the end casing 130 is disposed at a side away from the second cavity 112, one end of the first silencing element 300 away from the second cavity 112 extends into the end casing 130, an air inlet hole 131 is formed in the end casing 130, and the intake airflow flows into the end casing 130 from the air inlet hole 131, flows into the inner cavity through the first silencing cotton 310, and flows into the air inlet 210. The end shell 130 is connected to the outer shell 110 by disposing the end shell 130 at an end of the first chamber 111 far from the second chamber 112, the end shell 130 covers an end of the first silencer 300 far from the inlet 210 of the blower 200, and the end of the first silencer 300 is protected by the end shell 130. The end housing 130 is provided with an air inlet hole 131, and the intake air flows through the air inlet hole 131 of the end housing 130, then flows into the support member 320 through the first silencing cotton 310 and the air vent of the support member 320, and then flows to the air inlet 210 of the fan 200 through the first opening and the second opening.
Specifically, referring to fig. 2 and 3, the air outlet 220 and the end wall of the second chamber 112 facing away from the first chamber 111 have a gap. Set up fan 200 in second chamber 112, and fan 200 connects in the chamber wall of second chamber 112, and fan 200's air outlet 220 is towards the end wall of second chamber 112, leaves the clearance between the end wall that fan 200's air outlet 220 and second chamber 112 deviate from first chamber 111, prevents that the vibrations that fan 200 work produced from transmitting the end wall of shell 110 through air outlet 220. The exhaust hole 1111 is disposed on a wall of the first cavity 111, the air outlet of the fan 200 faces an end of the second cavity 112 away from the first cavity 111, and the exhaust airflow exhausted through the air outlet of the fan 200 has different flowing directions on at least two flowing paths. The exhaust airflow firstly flows towards the inner end part of the second cavity 112, then sequentially passes through the second cavity 112, the through hole 121 and the first cavity 111 along the axial direction of the shell 110, and finally flows out through the exhaust hole 1111, the flow direction of the exhaust airflow is bent, so that the flow directions of the exhaust airflow on two flow paths are different, the flow path of the exhaust airflow in the shell 110 is increased, and the noise generated by the flow of the exhaust airflow is reduced.
Specifically, referring to fig. 2 and 3, the blower 200 is connected to the wall of the second chamber 112 through a shock-absorbing pad 600, and the shock-absorbing pad 600 is used for absorbing shock generated by the blower 200 during operation. Install fan 200 on shock pad 600, connect shock pad 600 in the chamber wall of second chamber 112, and fan 200 butt in shock pad 600, through setting up shock pad 600, reduce the vibration noise that fan 200 work produced. Specifically, a first mounting hole is formed in the cavity wall of the second cavity 112, the mounting hole is a threaded hole, a second mounting hole is formed in the shock pad 600 corresponding to the first mounting hole, and screws sequentially penetrate through the second mounting hole and the first mounting hole to connect the shock pad 600 and the cavity wall of the second cavity 112.
Preferably, the housing 110 and the partition 120 are integrally formed, and the housing 110 is made of a plastic material, so that the actual processing and production of a factory are facilitated, and the production efficiency is improved.
Referring to fig. 2 and 3, a second sound-deadening piece 400 is disposed on a wall of the first chamber 111 and/or a wall of the second chamber 112, and the second sound-deadening piece 400 includes second sound-deadening cotton 410. In some embodiments, the second sound-deadening member 400 is disposed on the wall of the first chamber 111, and when the exhaust gas flow passes through the first chamber 111, the sound is absorbed by the second sound-deadening cotton 410 of the second sound-deadening member 400, so as to reduce the noise generated by the exhaust gas flow. In some embodiments, the second silencing element 400 is disposed on the wall of the second cavity 112, and when the exhaust airflow passes through the second cavity 112, the second silencing cotton 410 of the second silencing element 400 is used to absorb sound, so as to reduce the noise generated by the exhaust airflow. In some embodiments, the second silencing element 400 is disposed on the wall of each of the first cavity 111 and the second cavity 112, and when the exhaust airflow passes through the first cavity 111 and the second cavity 112, the second silencing cotton 410 of the second silencing element 400 is used to absorb sound, so as to reduce noise generated by the exhaust airflow. It is understood that the second silencing parts 400 are provided on the inner walls of the first and second chambers 111 and 112, that is, the second silencing parts 400 are provided on the flow path of the discharged air flow, to perform the sound absorbing work.
Specifically, the second noise damping member 400 further includes a rubber member 420 and a metal member 430, the second noise damping cotton 410, the rubber member 420 and the metal member 430 are sequentially arranged, the rubber member 420 and the metal member 430 are sandwiched between the second noise damping cotton 410 and the inner wall of the outer shell 110, and the metal member 430 is attached to the inner wall of the outer shell 110. The noise reduction effect of the second noise reduction part 400 is further enhanced by the rubber member 420 and the metal member 430, and the metal member 430 provides a certain supporting force to the outer shell 110 because the outer shell 110 is made of a rubber material. Specifically, the metal member 430 is a metal plate made of an aluminum alloy material, and the rubber member 420 is a rubber plate made of a rubber material. It should be noted that the inner wall of the housing 110 may be a cavity wall of the first cavity 111, a cavity wall of the second cavity 112, or a cavity wall of the first cavity 111 and the second cavity 112.
It is understood that in some embodiments, only the second sound attenuating cotton 410 may be disposed in the first cavity 111, depending on the actual production needs and the size of the inner wall of the fan casing 100.
Referring to fig. 4 and 5, in some embodiments, fan casing 100 includes a guiding plate 140, where guiding plate 140 is disposed between a sidewall of first cavity 111 and first silencing cotton 310 and located between air outlet 1111 and communication hole 121, and guiding plate 140 is used to guide exhaust airflow to flow around first silencing cotton 310 and then to be discharged from air outlet 1111. The guide plate 140 is disposed in the second cavity 112, one end of the guide plate 140 is connected to the sidewall of the first cavity 111, the other end of the guide plate 140 abuts against the outer wall of the first silencing cotton 310, and the guide plate 140 is disposed between the exhaust hole and the communication hole 121, when the air outlet 220 of the fan 200 discharges the exhaust airflow, the exhaust airflow flows into the first cavity 111 through the second cavity 112 and the communication hole 121, and then flows around the circumference of the first silencing cotton 310 and then is discharged outside the fan case 100 through the exhaust hole 1111. It should be noted that the second silencing piece 400 is disposed in the first cavity 111 to absorb the noise generated by the exhaust gas flow flowing in the first cavity 111, and flows around the circumferential direction of the first silencing cotton 310, that is, flows around the circumferential direction of the first cavity 111.
Preferably, the noise reduction fan assembly further includes an exhaust duct 500, the exhaust duct 500 communicating with the exhaust hole 1111, and the exhaust air flow passing through the exhaust hole 1111 flows out through the exhaust duct 500. Specifically, exhaust pipe 500 is made of a sound-deadening cotton material to further reduce noise generated by the exhaust gas flow.
The embodiment of the invention also provides a cleaning robot, which comprises a box body and the noise reduction fan assembly, wherein the fan shell 100 is arranged in the box body, and the fan 200 is used for generating suction force and pumping ground surface stains into the box body.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A noise reducing fan assembly, comprising:
a fan case (100);
the fan (200) is arranged in the fan shell (100), and the fan (200) is connected to the inner wall of the fan shell (100);
the air inlet (210) and/or the air outlet (220) of the fan (200) are/is provided with silencing cotton, and the flow directions of the inlet airflow flowing into the fan (200) and/or the exhaust airflow discharged by the fan (200) on at least two sections of flow paths are different.
2. The noise reduction fan assembly according to claim 1, wherein the intake vent (210) is provided with a first noise damping piece (300), the first noise damping piece (300) comprises a first noise damping cotton (310), the first noise damping cotton (310) encloses to form an inner cavity, the inner cavity is in fluid communication with the intake vent (210), and the intake airflow can flow into the inner cavity through the first noise damping cotton (310) and into the intake vent (210).
3. The noise reduction fan assembly according to claim 2, wherein the first noise damping member (300) further comprises a support member (320) disposed on a wall of the inner cavity, the support member (320) is honeycomb-shaped, an end of the support member (320) facing the inlet vent (210) is provided with a first opening in fluid communication with the inlet vent (210), and the inlet airflow passes through the first noise damping cotton (310) and flows into the support member (320) and flows into the inlet vent (210) through the first opening.
4. The noise reduction fan assembly according to claim 3, wherein the first noise reduction member (300) is a cylindrical structure, and the end of the first noise reduction cotton (310) facing the air inlet (210) is provided with a second opening in fluid communication with the air inlet (210), and the first opening, the second opening and the air inlet (210) are in two-to-two communication.
5. The noise reduction fan assembly according to claim 2, wherein the fan casing (100) comprises a housing (110) and a partition (120) disposed in the housing (110), the partition (120) divides the housing (110) into a first chamber (111) and a second chamber (112), a through hole (121) is disposed on the partition (120), the through hole (121) communicates the first chamber (111) and the second chamber (112), the fan (200) is disposed in the second chamber (112), an exhaust hole (1111) is disposed on a wall of the first chamber (111), the first noise reduction member (300) passing through the partition (120) is partially disposed in the first chamber (111) and partially disposed in the second chamber (112) and connected to the air inlet (210), and the intake air flow passes through the first noise reduction cotton (310) from a side facing away from the second chamber (112) and flows into the inner chamber and flows into the air inlet (210).
6. The noise reduction fan assembly according to claim 5, wherein the fan housing (100) further comprises an end housing (130) connected to the outer housing (110), the end housing (130) is disposed on a side away from the second cavity (112), an end of the first noise damper (300) facing away from the second cavity (112) extends into the end housing (130), an air inlet hole (131) is formed in the end housing (130), and the intake airflow flows into the end housing (130) through the air inlet hole (131), flows into the inner cavity through the first noise damping cotton (310), and flows into the air inlet (210).
7. The noise reduction fan assembly according to claim 5, wherein the air outlet (220) and an end wall of the second cavity (112) facing away from the first cavity (111) have a gap.
8. The noise reduction fan assembly according to claim 5, characterized in that a wall of the first chamber (111) and/or a wall of the second chamber (112) is provided with a second sound damping (400), the second sound damping (400) comprising second sound damping cotton (410).
9. The noise reduction fan assembly according to claim 5, wherein the fan casing (100) comprises a baffle (140), the baffle (140) is disposed between a sidewall of the first cavity (111) and the first silencing cotton (310) and between the exhaust hole (1111) and the through hole (121), and the baffle (140) is configured to guide the exhaust airflow to flow around the first silencing cotton (310) and then to be exhausted from the exhaust hole (1111).
10. A cleaning robot, characterized in that it comprises a box and a noise reduction fan assembly according to any of claims 1-9, said fan housing (100) being mounted in said box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211034730.4A CN115405570A (en) | 2022-08-26 | 2022-08-26 | Noise reduction fan assembly and cleaning robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211034730.4A CN115405570A (en) | 2022-08-26 | 2022-08-26 | Noise reduction fan assembly and cleaning robot |
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| Publication Number | Publication Date |
|---|---|
| CN115405570A true CN115405570A (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211034730.4A Pending CN115405570A (en) | 2022-08-26 | 2022-08-26 | Noise reduction fan assembly and cleaning robot |
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| Country | Link |
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| CN (1) | CN115405570A (en) |
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| CN118074413A (en) * | 2024-04-25 | 2024-05-24 | 云梦山(常州)科技有限公司 | Aviation starting integrated motor with noise reduction function |
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