CN220158168U - Noise elimination wind channel device, wind channel subassembly and cleaning robot - Google Patents

Abstract

The utility model discloses a silencing air duct device, an air duct component and a cleaning robot, and relates to the technical field of air purification. The air flow is uniformly diffused to the first-stage turbulence assembly through the flow dividing piece, so that the air flow uniformity in each first-stage turbulence channel is improved, the condition that the air flow is discharged in the shortest path in the air flow channel is avoided, the first-stage turbulence assembly is ensured to be capable of well diffusing and dividing air, and the noise elimination and vibration reduction effects of the noise elimination air channel device are improved.

Description

Noise elimination wind channel device, wind channel subassembly and cleaning robot

Technical Field

The utility model relates to the technical field of air purification, in particular to a silencing air duct device, an air duct assembly and a cleaning robot.

Background

The existing cleaning equipment such as dust collectors, intelligent cleaning robots and the like have the functions of dust collection, dust removal and the like, and the working principle of the dust collection function is that a motor is utilized to drive a blade to rotate at a high speed, so that air negative pressure is generated in a sealed shell, and dust on the ground or at a cleaning position is sucked.

However, because the motor is in a state of continuously rotating at a high speed during working, high-speed airflow generated by the motor can rub with other air and equipment parts, so that a duct system of the cleaning equipment generates larger noise in the dust collection and removal processes, the noise not only affects the use experience of a user on the cleaning equipment, but also affects the stability of the cleaning equipment in the use process due to vibration generated by friction between the air, and the cleaning effect of the equipment is affected to a certain extent.

Disclosure of Invention

The aim of the embodiment of the utility model is that: the utility model provides a noise elimination wind channel device, wind channel subassembly and cleaning robot, solves cleaning equipment noise too big to and the relatively poor problem of stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided a muffling air duct apparatus, comprising:

The air flow channel is used for providing a flowing space of air, and an air inlet and an air outlet which are communicated with the external environment are arranged on the air flow channel at intervals so as to limit the air flow direction in the air flow channel;

an air inlet and an air outlet are formed in the air inlet, and an air outlet is formed in the air inlet;

the flow dividing piece is arranged between the air inlet and the first-stage turbulent flow component and is used for dividing the air flow channel into a plurality of flow dividing channels, the first-stage turbulent flow channels and the diversion channels are alternately arranged and communicated with each other.

As an alternative implementation manner, the flow dividing piece is provided with a flow guiding surface for guiding the air flow from the air inlet to the air-head-level turbulence component, and the flow guiding surface is arranged in an extending way from one end close to the air inlet to the air-head-level turbulence component; and is also provided with

The guide surface is a curved surface or a plane.

As an alternative implementation mode, the included angle between the straight line formed by connecting the opposite ends of the guide surface and the air inlet direction of the air inlet is 0-70 degrees.

As an alternative embodiment, the first-stage spoiler assembly comprises at least two first-stage fluid bodies which are arranged side by side at intervals, and the first-stage fluid bodies are used for separating the air flow channel into at least two first-stage spoiler channels;

The first-stage flow dividing bodies and the flow dividing pieces are alternately arranged.

As an alternative embodiment, the number of the first-stage turbulence channels is n, wherein n is more than or equal to 3;

the number of the shunt channels is n-1.

As an alternative embodiment, further comprising:

the secondary turbulent flow assembly is arranged between the first-stage turbulent flow assembly and the air outlet, the secondary turbulent flow assembly is used for dividing the air flow channel into a plurality of secondary turbulent flow channels, and the first-stage turbulent flow channels and the secondary turbulent flow channels are alternately arranged and mutually communicated.

As an alternative embodiment, the secondary spoiler assembly comprises at least one secondary fluid for separating the air flow channel into at least two secondary spoiler channels;

the secondary split body is arranged opposite to the first-stage turbulent flow channel or the secondary turbulent flow channel.

As an alternative embodiment, a sound absorbing material is disposed in the airflow passage.

As an alternative embodiment, the sound absorbing material is disposed between the splitter and the air outlet.

As an alternative embodiment, the cross-sectional area of the air inlet is smaller than or equal to the cross-sectional area of the air outlet.

In a second aspect, there is provided an air duct assembly comprising:

the muffling air duct apparatus of the first aspect;

the fan is provided with an exhaust pipe, and the exhaust pipe is communicated with the airflow channel through the air inlet.

In a third aspect, there is provided a cleaning robot including:

the air duct assembly according to the second aspect, wherein the fan is further provided with an exhaust pipe connected with the exhaust pipe;

the dust collection mechanism is characterized in that one side of the dust collection mechanism is communicated with the external environment of the cleaning robot, and the other side of the dust collection mechanism is connected with the fan through the exhaust pipe.

The beneficial effects of the utility model are as follows: according to the silencing air duct device, the first-stage turbulence assembly is arranged in the air flow channel, so that the air flow channel is divided into a plurality of first-stage turbulence channels which are arranged side by side, the path length in the air flow channel is prolonged, and the flow speed is reduced. The sound waves carried in the air flow can be respectively diffused into the corresponding first-stage turbulence channels, so that energy absorption and noise reduction are carried out in the first-stage turbulence channels, noise and vibration generated in the working process of the cleaning equipment are reduced, and the use requirements of users and the stability of the equipment are improved;

the flow dividing piece is used for uniformly diffusing the air flow to the first-stage turbulence assembly, the air flow flowing to the first-stage turbulence assembly through each flow dividing channel is uniformly divided into each first-stage turbulence channel, the uniformity of the air flow in each first-stage turbulence channel is improved, the condition that the air flow is discharged in the shortest path is avoided, and the noise elimination and vibration reduction effects of the noise elimination air channel device are improved.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the overall structure of a sound-deadening air duct device according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a sound attenuation duct apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an airflow channel according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the primary fluid and secondary fluid according to an embodiment of the present utility model;

FIG. 5 is a schematic view illustrating the internal classification of the airflow channel according to the embodiment of the utility model;

FIG. 6 is a schematic diagram showing the relationship between the flow divider structure and the air inlet direction according to the embodiment of the present utility model;

fig. 7 is a schematic view of an arrangement mode of the sound absorbing material according to the embodiment of the utility model;

FIG. 8 is a simulation diagram of the flow channel according to an embodiment of the present utility model;

FIG. 9 is one of the assembled views of the duct assembly according to the embodiment of the present utility model;

FIG. 10 is a second view of an assembly of an air duct assembly according to an embodiment of the present utility model;

fig. 11 is a simplified structural diagram of a cleaning robot according to an embodiment of the present utility model.

In the figure: 10. an air flow channel; 11. an air inlet; 12. an air outlet; 13. a sound absorbing material; 20. an air-conditioning component; 21. an first-stage turbulence channel; 22. a first fraction fluid; 30. a shunt; 31. a shunt channel; 32. a flow guiding surface; 40. a secondary spoiler assembly; 41. a secondary spoiler channel; 42. a secondary fraction fluid; 43. a secondary spoiler assembly; 44. a tertiary turbulence assembly; 45. a four-stage spoiler assembly; 46. a five-stage spoiler assembly; 50. a blower; 51. an exhaust pipe; 52. an exhaust tube; 60. a windward part; 70. an air guide part; 80. an air duct housing; 81. an air duct connecting pipe; 82. an upper cover; 83. a lower cover; 84. a damping hose; 90. a base body; 91. a dust collecting box.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The cleaning device refers to a mechanical device which can be used for cleaning a designated position instead of manually. The existing cleaning equipment such as dust collectors, intelligent cleaning robots and the like have the functions of dust collection, dust removal and the like, and the working principle of the dust collection function is that a motor is utilized to drive a blade to rotate at a high speed, so that air negative pressure is generated in a sealed shell, and dust on the ground or at a cleaning position is sucked.

According to the background technology, during operation of the cleaning equipment, the motor is in a state of continuous high-speed rotation, high-speed airflow generated by the motor can rub with other air and equipment parts, so that the air duct system of the cleaning equipment generates larger noise in the dust collection and removal process, the use experience of a user on the cleaning equipment is affected by the noise, and the stability of the cleaning equipment in the use process is affected by vibration generated by friction between the air, so that the cleaning effect of the equipment is affected to a certain extent. For this purpose, the present embodiment provides the following.

The embodiment provides a noise elimination wind channel device, and it is mainly applied to the cleaning equipment that has dust absorption function, and this noise elimination wind channel device is through improving traditional cleaning equipment's exhaust channel structure, and it compares traditional cleaning equipment, and noise elimination wind channel device of this embodiment can provide noise elimination, vibration reduction's function, satisfies the user to cleaning equipment's demand.

Referring to fig. 1-3, the noise-reducing air duct device includes an air flow channel 10, the air flow channel 10 is used for providing a flow space for air to be discharged from the cleaning device during dust collection operation, so as to define an air flow direction of the air discharged from the cleaning device, and an air inlet 11 and an air outlet 12 which are respectively communicated with an external environment are arranged on the air flow channel 10 at intervals. Referring to fig. 9-10, in the application of the noise-reducing air duct device in the air duct assembly, the air inlet 11 is used for communicating with the air outlet 51 of the fan 50, and the air discharged from the air outlet 51 can be discharged from the air outlet 12 to the outside of the assembly through the air flow channel 10.

With continued reference to fig. 3, the air inlet 11 and the air outlet 12 define an air flow direction, an air inlet direction and an air outlet direction in the air outlet channel 10, and in this embodiment, the air inlet direction and the air outlet direction are at least partially staggered, and the staggered arrangement of the air inlet direction and the air outlet direction can be understood that the air inlet direction and the air outlet direction are at least partially oriented in different directions, or that the air inlet direction and the air outlet direction are even in the same direction, and the staggered directions can be staggered on the same horizontal plane, or staggered on different horizontal planes, and at least partially positioned in two staggered positions, so that at least part of the air flow path in the air flow channel 10 is a turbulence structure capable of disturbing the air flow direction, such as bending, etc. The air flow channel 10 is designed to be of a turbulent flow structure, so that the air flow channel 10 forms a simple labyrinth air channel structure, and air flow can collide with the side wall of the air flow channel 10 when flowing through the air flow channel 10, so that energy loss occurs when the air flow changes the flowing direction, and meanwhile, the flow speed of the air flow is reduced, and the effects of preliminary noise reduction and vibration reduction are achieved.

In the air flow channel 10, an air-jet turbulence assembly 20 is arranged between the air inlet 11 and the air outlet 12, the air flow channel 10 is divided into a plurality of air-jet turbulence channels 21 by the air-jet turbulence assembly 20, the air-jet turbulence channels 21 are sequentially arranged in the air flow channel 10 side by side, so that the main air flow flowing into the air flow channel 10 can be divided into a plurality of branches corresponding to the air-jet turbulence channels 21 under the action of the air-jet turbulence assembly 20, the branches respectively enter the corresponding air-jet turbulence channels 21 and are guided by the air-jet turbulence channels 21 to change the original flow direction, thereby prolonging the flow path of air in the air flow channel 10.

Illustratively, a sound damping structure may be disposed in each of the air-turbulence passages 21 to enable sound waves in the air-turbulence passages 21 to be buffered and absorbed.

It can be understood that the structure of the air flow channel 10 (including the air flow channel 10 body, the primary turbulence channel 21 and the secondary turbulence channel 41) and the design of the silencing structure need to ensure that the wind resistance parameter meets the requirement of the cleaning robot in the cleaning process, ensure that the air flow in the silencing air duct device is smooth, and enable the dust collection mechanism of the cleaning robot to generate enough negative pressure to suck external dust.

With continued reference to fig. 3, the silencing air duct device further includes a flow dividing member 30 disposed in the air flow channel 10, wherein the flow dividing member 30 may be disposed between the air inlet 11 and the air-jet flow component 20, so that the air flow flowing into the air flow channel 10 through the air inlet 11 can pass through the flow dividing member 30, the flow dividing member 30 is used for dividing the air flow channel 10 into a plurality of flow dividing channels 31, and each flow dividing channel 31 is sequentially disposed in the air flow channel 10 side by side, and the air-jet flow flowing channels 21 and the flow dividing channels 31 are alternately disposed and mutually communicated, similar to the arrangement of the air-jet flow channel 21. For example, the main air flow flowing into the air flow channel 10 through the air inlet 11 can be split into a plurality of primary branches flowing into the respective splitting channels 31 under the action of the splitting element 30, the primary branches flow towards the air flow direction of the air flow source assembly 20 under the guiding of the splitting element 30 and finally act on the air flow source assembly 20, and under the action of the air flow source assembly 20, the primary branches flow into the corresponding air flow source flow channel 21 respectively, so as to finally implement the noise reduction and vibration reduction of the air flow.

By implementing the above scheme, the main air flow can relatively uniformly flow into each flow distribution channel 31 under the action of the flow distribution member 30 to form primary flow distribution, and uniformly spread into each air flow distribution channel 21 formed by the air flow distribution assembly 20 under the guiding action of each flow distribution channel 31 to form secondary flow distribution, so that the secondary flow flowing into each air flow distribution channel 21 is relatively uniform, the interaction efficiency of the air flow in the air flow channel 10 and the air flow distribution assembly 20 is improved, the noise reduction and vibration reduction effects of each air flow distribution channel 21 on the secondary flow distribution are ensured to be the same to a certain extent, and the condition that the air flow is discharged in the air flow channel 10 by selecting the shortest path is avoided.

It should be noted that, the main function of the splitter 30 is to separate the main air flow into multiple primary air flows and uniformly diffuse the primary air flows to the first-stage spoiler assembly 20, so the splitter 30 should ensure the relatively smooth primary flow distribution in the splitter channel 31, and avoid excessive deceleration or spoiler of the air flow in the splitter channel 31, so that the spoiler effect of the subsequent primary flow distribution by the first-stage spoiler assembly 20 is affected.

In one embodiment, the air-jet flow channel 21 may be formed by the air-jet flow component 20, or may be formed by the channel sidewall of the air-jet flow channel 10 and the air-jet flow component 20 in cooperation; likewise, the flow dividing passage 31 may be formed between any two flow dividing members 30 disposed adjacently, or may be formed by the flow dividing members 30 being fitted to the passage side walls of the air flow passage 10.

With continued reference to fig. 3, the splitter 30 is formed with a guiding surface 32 for guiding the air flow from the air inlet 11 to the air-jet assembly 20, where the guiding surface 32 extends from one end near the air inlet 11 toward the air-jet assembly 20, so that the main air flow is guided to a position corresponding to the air-jet assembly 20 according to the extending direction of the guiding surface 32 after entering the splitting passage 31 and forming a primary split.

For example, the flow splitter 30 may be one of other shaped structures such as a plate structure, a block structure, and the like, and at least two flow guide surfaces 32 may be provided on the flow splitter 30. Taking the split flow as a plate structure and two diversion surfaces 32 as an example, the two diversion surfaces 32 are respectively formed on two opposite side plate surfaces of the split flow, and the split flow channel 31 can be formed between any diversion surface 32 and the channel side wall of the air flow channel 10, or can be formed between any two adjacent diversion surfaces 32 which are oppositely arranged in the case of arranging a plurality of split flows.

To reduce the influence of the guide surface 32 on the airflow velocity and other airflow parameters, it is ensured that the primary flow can be quickly split into primary flows by the splitter 30 and then flow to the air-jet assembly 20, and the guide surface 32 may be configured as a curved surface or a plane surface.

With continued reference to fig. 3 and 6, the flow guiding surface 32 in this embodiment is configured as a curved surface gradually curved from one end near the air inlet 11 toward the air-jet assembly 20, so that the air flow in the flow splitting channel 31 can be guided by the flow splitting surface with a curved surface structure, and can flow more smoothly to the air-jet assembly 20 for turbulence treatment.

In one embodiment, the end of the guiding surface 32 near the air inlet 11 is tangential to the air inlet direction, so that the flow speed and direction of the main air flow when entering the corresponding diversion channel 31 are not excessively disturbed. And, the straight line L1 formed by connecting the opposite ends of the guide surface 32 forms an included angle alpha of 0-70 degrees with the extension line of the air inlet direction L2 of the air inlet 11. Illustratively, the opposite ends of the flow divider 30 in the airflow direction are respectively formed with a first end 11 close to the air inlet and a second end far from the air inlet 11, and the straight line L1 may also be understood as a straight line formed by connecting the first end of the flow divider 30 with the second end thereof. The air inlet direction L2 may be understood as the air flow direction of the first end of the splitter 30, in practical application, multiple air flows enter the air flow channel 10 through the air inlet 11, when the multiple air flows respectively flow toward the corresponding splitter 30 along the air flow direction, each air flow is respectively split by the corresponding splitter 30, at this time, the air flow direction of the air flow corresponding to the first end of the splitter 30 is defined as the air inlet direction L2, it may be understood that the channel structure between the air inlet 11 and the splitter 30 may be a straight channel, an arc channel, or the like, but no matter what channel structure is between the splitter 30 and the air inlet 11, the air flow direction of the air flow contacting the first end of the corresponding splitter 30 is the air inlet direction L2. The air guide surface 32 is arranged between the air inlet 11 and the first-stage spoiler assembly 20 in the mode of the structural form, so that the first split flow is not easily affected by the air guide surface 32 while the air guide surface 32 can guide the corresponding first split flow to the position corresponding to the first-stage spoiler assembly 20, and the situation that the first split flow generates extra turbulence at one end of the air guide surface 32 close to the first-stage spoiler assembly 20 is avoided.

Based on the above-mentioned structure of the flow dividing member 30, the end of the flow dividing member 30 near the air inlet 11 may be provided with an arc structure, and two sides of the arc structure are tangent to the flow guiding surfaces 32 respectively disposed on two opposite sides of the flow dividing member 30. Thus, when the main air flow and the flow dividing member 30 form first contact, the main air flow acts on the arc structure at the end of the flow dividing member 30, and the arc structure can divide the main air flow into two primary flow dividing passages and guide the primary air flow into the flow dividing passages 31 corresponding to the two sides, so that the turbulence phenomenon generated when the main air flow impacts the end of the flow dividing member 30 is reduced to the greatest extent.

In other embodiments, the end of the splitter 30 near the air inlet 11 may also be configured in a tapered configuration.

With continued reference to fig. 3-5, the air-jet flow disturbing assembly 20 of the present embodiment includes at least two air-jet flow distributing bodies 22 arranged side by side at intervals, and the air-jet flow distributing bodies 22 are configured to separate the air-jet flow channel 10 into at least two air-jet flow disturbing channels 21, so as to perform the functions of diffusing, disturbing and guiding the air-jet flow. When the air flow flows in the first-stage turbulence channel 21, the sound waves in the air flow generate repeated contact friction with the first-stage turbulence component 20 and the silencing structure arranged in the first-stage turbulence channel 21, so that the sound waves are absorbed to a certain extent in the first-stage turbulence channel 21, and when the contact friction is generated between the air flow and the first-stage split body 22, resonance is generated between the air flow and the first-stage split body 22, so that the sound waves of the first-stage split flow are consumed and absorbed.

In order to ensure that the primary flows are able to interact with the corresponding primary flow branches 22, the primary flow branches 22 are arranged alternately with the flow branches 30. The alternating placement of the first stage fluid 22 and the flow splitter 30 can be understood as:

the end of the flow dividing piece 30 close to the first-stage spoiler assembly 20 is opposite to the first-stage spoiler channel 21; and

the first-stage fluid 22 is disposed opposite the diversion channel 31.

Through the arrangement, the primary flow flowing out through the flow distribution channel 31 can be ensured to act on the primary flow distribution body 22 corresponding to the corresponding flow distribution channel 31, and the primary flow distribution body 22 fully acts to distribute and diffuse to the corresponding primary flow distribution channel 21.

In one embodiment, in order to ensure that the primary branches can act on the primary branches 22 at corresponding positions, the number of the primary turbulence channels 21 is set to n, where n is greater than or equal to 3, and the number of the branch channels 31 is n-1. As shown in fig. 3, when the number of the first-stage spoiler channels 21 is 5, the number of the corresponding shunt channels 31 is 4.

In other embodiments, the number of the first-stage spoiler channels 21 and the number of the split channels 31 do not have a corresponding relationship, for example, when the number of the first-stage spoiler channels 21 is 5, the number of the split channels 31 corresponding to the first-stage spoiler channels may be 2, 3, etc.

With continued reference to fig. 3 to 5, in an embodiment, in order to improve the noise-reducing and vibration-reducing effects of the noise-reducing air duct device, the noise-reducing air duct device of the present embodiment further includes a secondary spoiler assembly 40, where the secondary spoiler assembly 40 is also disposed in the air flow channel 10 and is disposed between the primary spoiler assembly 20 and the air outlet 12. It will be appreciated that the function of the secondary spoiler assembly 40 is consistent with that of the primary spoiler assembly 20, the secondary spoiler assembly 40 serves to divide the air flow channel 10 into a plurality of secondary spoiler channels 41, and the primary spoiler channels 21 and the secondary spoiler channels 41 are alternately arranged and communicate with each other. The secondary turbulence channels 41 are disposed in the airflow channel 10 in parallel in sequence, so that the secondary flow flowing into the channel of the primary turbulence channel 21 can be further split into a plurality of tertiary flows flowing into the secondary turbulence channels 41 under the action of the secondary turbulence assembly 40, and the tertiary flows are guided by the secondary turbulence channels 41 after entering the corresponding secondary turbulence channels 41, so as to change the original flow direction of the secondary turbulence channels 41, and the flow path of the air in the airflow channel 10 is further extended.

Similar to the primary spoiler channels 21, a sound damping structure may be disposed in each secondary spoiler channel 41 to enable sound waves in the secondary spoiler channel 41 to be buffered and absorbed.

As shown in fig. 5, the secondary spoiler assembly 40 includes at least one secondary flow splitter 42, where the secondary flow splitter 42 is configured to separate the airflow channel 10 into at least two secondary spoiler channels 41, so as to perform the functions of diffusing, spoiler, and acoustic guiding on the airflow. When the air flow flows in the secondary turbulence channel 41, the sound wave in the air flow generates repeated contact friction with the secondary turbulence component 40 and the silencing structure arranged in the secondary turbulence channel 41, so that the sound wave is absorbed to a certain extent in the secondary turbulence channel 41, and when the contact friction is generated between the air flow and the secondary split body 42, the air flow and the secondary split body 42 generate resonance, so that the sound wave of the primary split flow is consumed and absorbed.

In order to ensure that the secondary branches respectively can interact with the corresponding secondary branches 42, the secondary branches 42 are arranged opposite the primary spoiler channel 21 or the secondary spoiler channel 41.

As will be appreciated from the foregoing, in the case where the secondary spoiler assembly 40 is disposed adjacent to the primary spoiler assembly 20, each secondary fluid 42 is disposed directly opposite the primary spoiler channel 21, i.e., the end of each primary fluid 22 remote from the air intake 11 is disposed directly opposite the secondary spoiler channel 41. In an embodiment, a plurality of secondary spoiler assemblies 40 may be disposed between the air outlet 12 and the air-jet member 20 at intervals along the air flow direction, and in any two adjacent secondary spoiler assemblies 40, the secondary split body 42 at the rear stage is disposed opposite to one of the secondary spoiler channels 41 separated by the secondary split body 42 at the front stage, that is, the secondary split body 42 at the front stage is disposed opposite to the secondary spoiler channel 41 at the rear stage.

It can be understood that the main air flow entering the air flow channel 10 from the air inlet 11 is divided into a plurality of primary branches by the splitter 30 and flows into each of the splitting channels 31 correspondingly, the primary branches are then divided and spread into a plurality of secondary branches by the action of the primary turbulence component 20 and flow into the corresponding primary turbulence channels 21 for primary noise elimination and damping treatment, then when the secondary branches continue to flow towards the air outlet 12, each secondary branch flows to the corresponding secondary branches 42 and acts with the secondary branches, is divided into a plurality of tertiary branches and flows into the secondary turbulence channels 41, and according to the number of the secondary turbulence components 40, the tertiary branches can be further divided into four-stage branches, five-stage branches and the like by the secondary branches 42 at the subsequent stage, so that multi-stage branches are formed in the air flow channel 10, sound waves in each branch are subjected to noise elimination and damping treatment after continuous branches and turbulence, the contact area of each air flow with the primary branches 22, the secondary branches 42 and the noise elimination structure is sufficiently increased, so that most of energy of the sound waves is fully buffered, and most of the sound waves are consumed in the splitting channels 31, and the sound wave noise elimination effect is effectively improved.

Likewise, the secondary spoiler channel 41 may be formed by any two adjacent secondary flow splitters 42, or by the secondary flow splitters 42 being formed by mating with the channel side walls of the airflow channel 10.

In one of these cases, the number of secondary branches 42 in the same secondary spoiler assembly is greater than or equal to two, and any two secondary branches 42 in the same secondary spoiler assembly 40 are disposed opposite to each other, and two airflows are formed on opposite sides of the secondary branches 42 from the perspective of airflows, and these airflows eventually form a confluence in the secondary spoiler channel 41 formed between the secondary branches 42.

In another case, the number of secondary flow splitters 42 in the same secondary spoiler assembly 40 is one, and a secondary spoiler channel 41 is formed between the side portion of the secondary flow splitter 42 and the channel side wall of the airflow channel 10; or when the number of the secondary flow splitting bodies 42 in the secondary flow splitting assembly 40 of the same stage is greater than or equal to two, the secondary flow splitting bodies 42 arranged on the side part of the channel side wall closest to the airflow channel 10 and the channel side wall of the airflow channel 10 form a secondary flow splitting channel.

As shown in fig. 5, taking a schematic view of the internal partial structure of the airflow channel 10 as an example, in this embodiment, the secondary spoiler assembly 40 includes a secondary spoiler assembly 43 disposed adjacent to one side of the primary spoiler assembly 20, and a tertiary spoiler assembly 44, a quaternary spoiler assembly 45 and a quaternary spoiler assembly 46 sequentially disposed toward the air outlet 12, the primary spoiler assembly 20 includes four primary fluid branches 22, and the number of the flow splitters 30 may be three to form four flow splitting channels 31 and five corresponding primary spoiler channels 21, and the secondary spoiler assembly 43 disposed at one side of the primary spoiler assembly 20 toward the air outlet 12 includes five secondary flow splitters 42, where the secondary fluid branches 42 in the secondary spoiler assembly 43 are disposed on paths extending from the primary spoiler channels 21 separated by the primary fluid branches 22. In this way, after the primary airflow entering from the air inlet 11 is split into primary branches by the splitting channels 31, the primary branches are separated to form secondary branches flowing to the secondary branches, in this embodiment, the primary turbulence assembly 20 can separate the primary branches into five secondary branches, the secondary branches respectively flow along the primary turbulence channels 21 formed at two sides of the primary branches 22, each secondary branch respectively flows to the stimulated branches located at the secondary turbulence assembly 43, and then, when the secondary branches respectively act on the secondary branches 42 at the corresponding positions, the secondary branches are separated into six tertiary branches, and when the airflow is separated once, the flow direction, the flow velocity and the flow rate are all changed, so that the contact area of each turbulence channel and the airflow inside the turbulence assembly can be increased, and the sound wave silencing effect is effectively improved.

In order to enable the airflows in the airflow channel 10 to be converged and discharged from the air outlet 12 to the external environment of the noise reduction air duct device, the number of the secondary split bodies 42 in the tertiary spoiler assembly 44, the quaternary spoiler assembly 45 and the quaternary spoiler assembly 46 in the present embodiment is gradually decreased. The main air flow is separated into a plurality of flow dividing effects after entering the air flow channel 10, and the effect that the plurality of flow dividing effects can be combined into one air flow when approaching the air outlet 12 and discharged from the air outlet 12 is also satisfied.

With continued reference to fig. 4, the primary and secondary branches 22 and 42 of the present embodiment have the same structure, and in order to further improve the noise-canceling and vibration-damping effects in the limited installation space in the noise-canceling air duct apparatus, the primary and secondary branches 22 and 42 each include a windward portion 60 and an air guiding portion 70. It should be noted that, the windward portion 60 and the air guiding portion 70 may be an integrally formed structure, so as to reduce the processing difficulty, the installation difficulty, and the like of each split fluid. The windward portion 60 and the wind guiding portion 70 may be two independent members, and the two members coupled to each other in the wind path structure formed by the two members may be disposed in the airflow passage 10 by independent processing, mounting, or the like.

In an embodiment, taking one of the first-stage fluid 22 or the second-stage fluid 42 as an example, the windward portion 60 is disposed at one end near the air inlet 11 for dividing the air flow in the air flow channel 10 into at least two branches, when the air flow flows toward the fluid, the windward portion 60 is the portion that contacts with the air flow first, and the windward portion 60 blocks the air flow and changes the direction of the air flow, so that the air flow is divided into at least two branches, and each branch flows toward two sides of the windward portion 60. The wind guiding parts 70 are at least two, each wind guiding part 70 is respectively arranged at two opposite side parts of the primary flow dividing body 22 or the secondary flow dividing body 42, each wind guiding part 70 forms one side wall of each turbulence channel corresponding to the wind guiding part 70, and the wind guiding parts 70 are used for guiding the air flow direction in the turbulence channel corresponding to the wind guiding part, wherein each wind guiding part 70 is matched with the air flow path formed by separating the windward part 60, so that each air flow split by the windward part 60 can be guided by the wind guiding part 70, and the buffering and absorbing effects of noise sound waves in the air flow can be improved.

Taking the structure of the primary fluid 22 or the secondary fluid 42 as an example, the distance between any two adjacent wind guiding portions 70 is larger than that between the windward portions 60, and the primary fluid 22 and the secondary fluid 42 gradually expand from one end close to the windward portions 60 towards the wind guiding portions 70 and then gradually narrow in the airflow direction, so that a diffusion structure is formed at the front ends of the primary fluid 22 and the secondary fluid 42, and sufficient installation space is provided for the secondary fluid 42 at the subsequent stage and sufficient flow space is provided for airflow.

It is understood that the peripheral shapes of the primary 22 and secondary 42 flow splitters include, but are not limited to, one or more combinations of drop shapes, circles, diamonds, rectangles.

As shown in fig. 1-2, the silencing air duct device further includes an air duct housing 80, the air duct housing 80 is of a hollow structure, the air flow channel 10 mentioned in the above scheme is formed in the air duct housing 80, and the air inlet 11 and the air outlet 12 are both opened on the air duct housing 80. The first-stage turbulence assembly 20, the secondary turbulence assembly 40 and the flow dividing member 30 are all arranged in the airflow channel 10 and connected to the air channel shell 80, the air channel shell 80 is located at the air inlet 11 and can be provided with an air channel connecting pipe 81 extending out of the air channel shell 80, an air inlet flow channel is formed in the air channel connecting pipe 81, the flow direction of air entering the noise elimination air channel device is limited, and the noise elimination air channel device is connected with the fan 50 conveniently.

With continued reference to fig. 1-2, in order to facilitate the production, assembly and subsequent replacement and maintenance of the components, the duct housing 80 includes an upper cover 82 and a lower cover 83 that are mutually covered, the airflow channel 10 may be formed by assembling and enclosing the upper cover 82 and the lower cover 83, and the primary split body 22, the secondary split body 42 and the split member 30 may be disposed on the upper cover 82 or the lower cover 83, so that the processing efficiency may be improved in an integrally formed manner during the processing. The upper cover 82 and the lower cover 83 in this embodiment are specifically two shells of the noise-elimination air duct device, which are installed in the cleaning robot and are relatively close to the cleaning robot and relatively far away from the cleaning robot, the shell at the side relatively close to the cleaning robot is defined as the lower cover 83, the shell at the side relatively far away from the cleaning robot is defined as the upper cover 82, the upper cover 82 and the lower cover 83 can be detachably connected through a buckle, and also can be fixedly connected through a threaded connection or the like.

With continued reference to fig. 2 and 7, in order to further enhance the sound attenuation effect, the airflow passage 10 is provided with a sound absorbing material 13.

In one embodiment, the sound absorbing material 13 may be sleeved on the periphery of the primary fluid 22 and/or the secondary fluid 42;

as an implementation that can be implemented independently of the above embodiment or can be implemented together with the above embodiment, the sound absorbing material 13 may be disposed around the inner side wall of the duct housing 80;

in the present embodiment, the sound absorbing material 13 is filled in the airflow channel 10, specifically, the sound absorbing material 13 is filled in each of the primary turbulence channel 21 and the secondary turbulence channel 41, and in order to reduce the influence on the airflow during the flow division, the sound absorbing material 13 is not disposed in the flow division channel 31, that is, the sound absorbing material 13 is disposed between the flow division member 30 and the air outlet 12.

The sound absorbing material 13 may be specifically used to reduce noise generated by the fan 50 exhausting air when the cleaning robot is in operation, and the sound absorbing material 13 should be selected to have some necessary conditions. For example, the sound absorbing material 13 needs to be a ventilation member, or it can be said that the wind resistance of the sound absorbing material 13 is not excessively large, so that the sound absorbing material 13 can reduce the noise of the air flow without affecting the normal operation of the blower 50. The sound absorbing material 13 needs to be a component with good noise reduction effect, so that the sound absorbing material 13 can reduce noise to the greatest extent, and the use experience of a user is enhanced.

In the present embodiment, the sound absorbing material 13 is a sound absorbing cotton, and the material of the sound absorbing cotton is not limited to fiber cotton, polyurethane sound absorbing cotton, sponge, pearl cotton, or the like, and the thickness thereof is not limited. It can be understood that the internal structure of the sound absorbing cotton is in a mesh shape, when noise is transmitted into the surface of the sound absorbing cotton, a part of the noise can be reflected by the sound absorbing cotton, the rebound noise can be counteracted with the noise transmitted to the direction of the sound absorbing cotton subsequently, the effect of one-time noise elimination is achieved, a part of the noise can be absorbed by the sound absorbing cotton through the sound absorbing cotton, and a part of the noise can be lost when being rubbed with surrounding media during vibration transmission of the noise absorbing cotton, so that the effect of noise elimination is finally achieved.

According to the above-mentioned scheme, in order to avoid the flow velocity increase caused by the converging and other factors when the air flow is discharged at the air outlet 12, the cross-sectional area of the air inlet 11 of the present embodiment is smaller than or equal to the cross-sectional area of the air outlet 12, so that the flow velocity of the air flow at the air outlet 12 is smaller than or equal to the flow velocity of the air flow at the air inlet 11.

According to the above-mentioned technical solution, please refer to fig. 8, which is a simulation diagram of the air flow channel 10 of the noise elimination air duct device according to the present embodiment, it can be seen that under the action of the splitter 30, the high-speed main air flow (the portion with lighter color near the air inlet 11) can be evenly split and flows onto the primary turbulence assembly 20, and the air flow gradually tends to be smooth (the color gradually becomes uniform) as the air flow passes through the primary turbulence assembly 20 and each secondary turbulence assembly 40, so that the air flow can be discharged in a smooth manner at the air outlet 12, thereby achieving the effects of noise elimination and vibration reduction.

Referring to fig. 9-10, the present embodiment further provides an air duct assembly, where the above-mentioned noise-reducing air duct device is applied to the air duct assembly, that is, the air duct assembly includes the noise-reducing air duct device as mentioned above, and a fan 50, where the fan 50 is provided with an exhaust duct 51, and the exhaust duct 51 is communicated with the airflow channel 10 through the air inlet 11.

The blower 50 in the present embodiment is a component that converts electric energy input into mechanical energy to raise the pressure of gas and discharge the gas. The fan 50 of this embodiment has exhaust column 52 and exhaust duct 51, and exhaust column 52 can set up at the top or the bottom of fan 50, and exhaust duct 51 can set up the lateral part at fan 50, so can effectually utilize cleaning machine people's inner space, fan 50 also can have better wind-force effect.

Here, the noise principle formed by the exhaust pipe 51 of the blower 50 is described, because the pipe diameter of the exhaust pipe 51 is smaller, the blower forms a larger wind pressure in the housing of the blower 50 in the rotation process, so when the air with larger pressure is exhausted from the exhaust pipe 51, the air with larger pressure can impact and vibrate the external air, thereby generating noise, and therefore, when the wind pressure in the exhaust pipe 51 is larger as the rotation speed of the blower is faster, the noise formed by the blower 50 in the exhaust process is larger. In order to sufficiently reduce the noise of the air flow discharged from the exhaust duct 51 and to enhance the canceling effect of the noise sound wave, the size of the air flow passage 10 needs to be larger than that of the exhaust duct 51, giving the discharged air flow sufficient buffer space, so that the noise is buffered and absorbed in the noise-canceling air duct device.

As the connecting structure between the noise elimination wind channel device and the fan 50, the damping hose 84 is arranged between the exhaust pipe 51 and the noise elimination wind channel device, the damping hose 84 is made of materials with damping function, soft materials such as soft rubber can be adopted, the damping hose 84 can reduce noise at the exhaust pipe 51 of the fan 50 through damping, the air tightness between the fan 50 and the noise elimination wind channel device can be improved, the stability of airflow circulation is ensured, and the reliability of the wind channel assembly is further improved.

With continued reference to fig. 11, the present embodiment further provides a cleaning robot, which includes the above air duct assembly, the fan 50 is further provided with an exhaust tube 52 connected to the exhaust tube 51, a dust collection mechanism is disposed in the cleaning robot, one side of the dust collection mechanism is communicated with an external environment of the cleaning robot, and the other side of the dust collection mechanism is connected to the fan 50 through the exhaust tube 52.

The cleaning robot is an intelligent household appliance, is also called an automatic cleaner, an intelligent dust collection robot, a dust collector and the like, is one of the intelligent household appliances, and can automatically complete cleaning work in a region by means of certain artificial intelligence. The cleaning robot generally adopts a brushing and vacuum mode to absorb the dust on the ground into the dust box 91 of the cleaning robot, thereby completing the function of cleaning the ground. The cleaning robot is operated by remote control or by an operation panel on a machine body, and the machine body is mainly a disc type. The rechargeable battery is used for operation, and the rechargeable battery can be used for reserving cleaning and self-charging in general time.

The front of the cleaning robot is provided with a sensor which can detect obstacles, such as a wall or other obstacles, can turn by itself, and can travel different routes according to the settings of different programs of the system so as to clean the area in a planning way. The cleaning robot can produce noise when airing exhaust, influences user's use, also has caused certain influence to user's health.

The cleaning robot generally has an outer case (not shown) and a base assembly disposed in the outer case, and the base assembly includes a base body 90, and the cleaning robot according to the embodiment is formed by disposing components such as a driving wheel, a battery, an air duct assembly, etc. on the base body 90. The shell body can play the role of protecting parts in the base assembly of the cleaning robot, and the position, corresponding to the air outlet 12 of the silencing air duct device, on the shell body can be correspondingly provided with a clearance space, and air blown out by the air outlet 12 is provided to be discharged outside the shell body.

The dust box 91 is used for temporarily storing dust and garbage collected by the cleaning robot, the dust box 91 can be mounted on the outer shell of the cleaning robot in a detachable mounting manner, or is relatively fixed with the outer shell, and the dust discharging port is arranged, so that a user can automatically discharge dust or automatically and manually discharge dust from the workstation to clean the collected objects in the dust box 91. The dust box 91 may be provided with a dust inlet and an air outlet, the dust inlet may be communicated with a dust collection channel (not shown) on the cleaning robot bottom body, a dust collection mechanism communicated with the outside of the cleaning robot is formed on the dust collection channel, one side of the dust collection mechanism is opposite to the ground to be cleaned by the cleaning robot in the use state of the cleaning robot, and the other side of the dust collection mechanism is communicated with a noise elimination air channel device through the dust collection channel, the dust box 91 and the air outlet pipe 51 of the fan 50. The air outlet of the dust box 91 is used to communicate with the exhaust duct 52 of the blower 50. The blower 50 is a main power output part of the duct assembly in the cleaning robot, and the blower 50 is used for providing power to form negative pressure in the dust suction duct, thereby sucking dust on the ground into the dust box 91.

In summary, the noise elimination wind channel device, the wind channel subassembly and the cleaning robot that this embodiment provided can effectively remove noise, vibration to improve user's use experience and equipment stability, be provided with the diverging piece 30 in noise elimination wind channel device, can let the air current flow more evenly on the first-stage vortex subassembly 20, avoid the air current to select shortest path exhaust's condition in air current channel 10, improve noise elimination, vibration damping effect of noise elimination wind channel device.

In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are merely for convenience of description and to simplify the operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.

In the description herein, reference to the term "one embodiment," "an example," etc., means 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 utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (12)

1. A sound-deadening air passage device, characterized by comprising:

the air flow channel (10) is used for providing a flowing space of air, an air inlet (11) and an air outlet (12) which are communicated with the external environment are arranged on the air flow channel (10) at intervals so as to limit the air flow direction in the air flow channel (10);

An air-jet flow component (20) is arranged between the air inlet (11) and the air outlet (12), and the air-jet flow component (20) is used for separating the air flow channel (10) into a plurality of air-jet flow channels (21) which are arranged side by side;

the air distribution piece (30) is arranged between the air inlet (11) and the first-stage turbulence assembly (20), the air distribution piece (30) is used for dividing the air flow channel (10) into a plurality of distribution channels (31), and the first-stage turbulence channels (21) and the distribution channels (31) are alternately arranged and mutually communicated.

2. The muffling air duct device according to claim 1, wherein the flow dividing member (30) is formed with a flow guiding surface (32) for guiding the air flow from the air inlet (11) to the air head-level turbulence assembly (20), and the flow guiding surface (32) is arranged to extend from one end close to the air inlet (11) toward the air head-level turbulence assembly (20); and is also provided with

The guide surface (32) is a curved surface or a plane surface.

3. The muffling air duct apparatus as set forth in claim 2, wherein the straight line formed by connecting opposite ends of the guide surface (32) forms an angle of 0 ° -70 ° with the air intake direction of the air intake opening (11).

4. The muffling air duct apparatus of claim 1, wherein the air-jet assembly (20) includes at least two spaced side-by-side primary flow splitters (22), the primary flow splitters (22) being configured to separate the air flow channel (10) into at least two air-jet channels (21);

The primary flow divider (22) is arranged alternately with the flow divider (30).

5. The muffling air duct apparatus according to any one of claims 1-4, wherein the number of the air-turbulence passages (21) of the first stage is n, wherein n is not less than 3;

the number of the diversion channels (31) is n-1.

6. The muffling air duct apparatus of any one of claims 1-4, further comprising:

the secondary vortex assembly (40) is arranged between the first-stage vortex assembly (20) and the air outlet (12), the secondary vortex assembly (40) is used for dividing the airflow channel (10) into a plurality of secondary vortex channels (41), and the first-stage vortex channels (21) and the secondary vortex channels (41) are alternately arranged and communicated with each other.

7. The muffling air duct apparatus of claim 6, wherein the secondary spoiler assembly (40) comprises at least one secondary split flow body (42), the secondary split flow body (42) being used to separate the air flow channel (10) into at least two secondary spoiler channels (41);

the secondary flow splitter (42) is arranged opposite to the primary flow disturbing channel (21) or the secondary flow disturbing channel (41).

8. The muffling air duct device according to claim 1, wherein a sound absorbing material (13) is provided in the air flow passage (10).

9. The muffling air duct apparatus according to claim 8, wherein the sound absorbing material (13) is provided between the flow dividing member (30) and the air outlet (12).

10. The muffling air duct apparatus according to claim 1, wherein a sectional area of the air intake (11) is smaller than or equal to a sectional area of the air outlet (12).

11. An air duct assembly, comprising:

the muffling air duct apparatus of any one of claims 1-10;

the fan (50) is provided with an exhaust pipe (51), and the exhaust pipe (51) is communicated with the airflow channel (10) through the air inlet (11).

12. A cleaning robot, comprising:

the air duct assembly of claim 11, the blower (50) further provided with an exhaust duct (52) connected to the exhaust duct (51);

and one side of the dust collection mechanism is communicated with the external environment of the cleaning robot, and the other side of the dust collection mechanism is connected with the fan (50) through the exhaust pipe (52).