186 results about "Fan noise" patented technology

The technology described herein is directed towards a metasurface arranged with unit cells for broadband and / or multiband sound absorption, in which the unit cells are based on the principles of Helmholtz resonators. Deeply subwavelength sound absorbing unit cells are designed and constructed based on desired resonance frequencies. Each unit cell includes a neck portion and air chamber dimensioned to resonate at a desired resonance frequency and thereby inverse phase cancel corresponding frequencies of incoming sound waves. Differently designed and arranged subgroups of unit cells are part of the metasurface, which can be positioned proximate to a noise source. As practical examples, the metasurface or multiple metasurfaces can be placed near or wrapped around a computer server or rack of servers to absorb fan noise. The metasurface components (including the unit cells) can be printed by a 3D printer to result in a thin, light-weight, and cost effective noise absorbing metasurface.

The invention discloses a piezoelectric fan control method, a piezoelectric fan control device, an electronic device and a computer readable storage medium, and relates to the technical field of fan control. The piezoelectric fan is connected with a to-be-cooled device, and the control method comprises the steps that according to the hot spot temperature of a power device of the to-be-cooled device and the temperature of a shell of the to-be-cooled device, operation gears of the piezoelectric fan are determined, and the operation gears comprise the closing gear, the low-power-consumption optimal operation gear and the full-power gear; and under the condition that the operation gear of the piezoelectric fan is the low-power-consumption optimal operation gear, the driving voltage and the working frequency of the piezoelectric fan are adjusted according to a multi-objective function until the parameters of the multi-objective function are reduced to the minimum value, and then the piezoelectric fan is started. The parameters of the multi-objective function comprise fan power consumption and fan noise of the piezoelectric fan. According to the piezoelectric fan, low-power-consumption and low-noise operation can be kept on the premise that safe heat dissipation of the piezoelectric fan is ensured.

The technology described herein is directed towards metasurfaces arranged with unit cells for narrowband sound absorption, in which the unit cells are based on the principles of Helmholtz resonators. A deeply subwavelength sound absorbing unit-cell is designed and constructed based on a desired resonance frequency. The unit-cell includes a neck portion and air chamber dimensioned to resonate at the desired resonance frequency to inverse phase cancel corresponding narrowband frequencies of incoming sound waves. The unit cells are distributed (e.g., periodically) as part of a metasurface, e.g., positioned proximate to a noise source. As practical examples, the metasurface or multiple metasurfaces can be placed near or wrapped around a computer server or rack of servers to absorb fan noise. The metasurface components (including the unit-cells) can be manufactured using any type of additive manufacturing process such as 3D printing to result in a thin, light-weight, and cost effective noise absorbing metasurface.

The invention provides a fan noise reduction method and device, electronic equipment and a storage medium, the method is applied to the electronic equipment comprising a fan, and the method comprises the steps that the current temperature of the electronic equipment is obtained; determining a first target rotating speed of the fan based on the current temperature of the electronic equipment; determining a rotating speed fluctuation range corresponding to the first target rotating speed; the current rotating speed of the fan is controlled to be the first target rotating speed, and multiple second target rotating speeds are obtained based on the first target rotating speed and the rotating speed fluctuation range; the fan is controlled to operate at the second target rotating speeds in sequence; each second target rotating speed is used for reducing the noise of the audio of the fan. According to the method, after the rotating speed of the fan is adjusted to the target rotating speed, range fluctuation is conducted on the target rotating speed, the constant inherent frequency of fan sound can be scattered, the noise outburst ratio of the fan sound is reduced, and then noise reduction of the fan is achieved.

The invention provides a method for testing noise and vibration of a refrigeration fan of a refrigerator, relates to the field of vibration testing of refrigerators, and aims to solve the problem that the real noise performance of the fan in a complex environment in the refrigerator cannot be reflected in the current noise testing of the fan of the air-cooled refrigerator. The actual installation states of a fan, an air duct and a box body are reserved to eliminate single body test deviation, vibration and noise data are synchronously collected, time domain and frequency domain analysis is covered, vibration-noise causal relation tracing is achieved, the coupling frequency band and energy distribution of vibration and noise are quantified through time domain and frequency domain conjoint analysis, and therefore the noise source and the coupling frequency band are positioned, and the noise quality is improved. And targeted optimization is facilitated, and the noise optimization efficiency and the optimized noise control effect are improved.

The invention relates to the field of centrifugal fan industry, in particular to a multi-wing centrifugal fan impeller with an arc-shaped front disc and a multi-wing centrifugal fan, the impeller comprises the front disc and a rear disc, an exhaust inlet is formed in the middle of the front disc, and a plurality of blades are arranged on the rear disc in a surrounding array mode; the front disc is of an arc-shaped structure, the front disc comprises a front disc linear part and a front disc arc part which are connected in the direction from the air suction opening to the rear disc, and an impeller clearance fit part is arranged at the end, away from the front disc arc part, of the front disc linear part and used for connecting the impeller and the current collector. According to the multi-wing centrifugal fan impeller with the arc-shaped front disc and the multi-wing centrifugal fan, the blades on the two sides are asymmetrically designed, the contact ends of the blades and the rear disc are straight and perpendicular, the contact ends of the blades and the front disc are in arc curvature transition, and when air flow enters the impeller, the air flow can flow in the arc direction of the blades, so that a vortex area and an impact area are reduced; the fan pressure and efficiency of the multi-wing centrifugal fan are effectively improved, and fan noise generated by rotation impact when airflow enters is reduced.

The following pneumatic wet-type vibrating wire dust remover comprises an air inlet barrel, a fan barrel and an air outlet barrel which are sequentially connected and coaxially arranged, an air inlet grille is fixed to the outer side of the air inlet end of the air inlet barrel, a negative pressure spraying device is arranged in the air inlet barrel in a sleeved mode, a water inlet is formed in the outer surface of the air inlet barrel, and the negative pressure spraying device is communicated with the water inlet; a vibrating wire dust removal plate is arranged in the air inlet barrel, and a pneumatic fan is coaxially arranged in the fan barrel. When in use, the device is respectively arranged at the left and right walking parts of the coal mining machine body to realize nearby dust removal, effectively reduce coal dust dissipation and achieve high dust removal efficiency. The device adopts negative-pressure spraying, the vibrating wire dust removal plate is matched with the fan to realize dust removal, the dust removal efficiency is high, and the effect is good. An air outlet of the device is matched with a silencer, and noise of the fan is effectively reduced. And the sewage is discharged to the toothed rail of the scraper conveyer through a special pipeline, so that the cleaning and lubricating effects are achieved, coal powder and dirt are treated without shutdown, the operation efficiency is further improved, and the operation environment is remarkably improved.

The invention discloses a fan noise control method, device and system and an air conditioner, and belongs to the field of fan noise control. The draught fan noise control method comprises the steps that when it is determined that the noise of a draught fan is unqualified, the noise peak frequency of the noise is obtained; determining the noise type of the noise based on the noise peak frequency; and the fan blade angle is adjusted based on the noise type. According to the scheme, when the fan noise is unqualified, different types of noise can be determined based on the noise peak frequency, and then the fan blade angle is adjusted by adopting different adjusting modes according to the different types of noise, so that when the noise is unqualified, the fan blade angle can be adjusted in a targeted manner based on the different types of noise, adjustment can be performed in time, and the fan blade angle adjusting efficiency is improved. And a sound wave generator is not needed, the cost is low, the method can be suitable for various use scenes, and the use experience of a user is not affected.

The utility model discloses a notebook computer automation test assembly line, which comprises a code scanning connection station, a horn test device, a fan noise test device and a microphone test device which are sequentially arranged along a product circulation direction, and is characterized in that the code scanning connection station is used for calibrating the position and the opening and closing angle of a notebook computer and can scan the code of the notebook computer; the loudspeaker test equipment is used for testing loudspeaker performance and keyboard resonance performance of the notebook computer, and the fan noise test equipment is used for testing noise conditions of a cooling fan of the notebook computer; a material receiving assembly is arranged on one side of the microphone testing device, and the microphone testing device is used for testing the microphone performance and the microphone air tightness of the notebook computer and sending the tested notebook computer to the material receiving assembly. According to the utility model, an assembly line type operation mode is adopted, manual transfer is not needed, multiple test operations of the notebook computer can be completed at the same time, the labor cost of the test is reduced, and the test efficiency can be greatly improved.

The utility model relates to the technical field of fan noise reduction, in particular to an impeller, a fan and a cleaning device, the impeller comprises a seat body and fan blades, the seat body is provided with a top surface and a curved surface, and the curved surface surrounds the top surface and intersects with the top surface. And one end of each fan blade is connected with the seat body and extends on the curved surface. According to the impeller, generated noise can be reduced.

The invention relates to an air conditioner outdoor unit with an active noise reduction function, an air conditioner and an active noise reduction method, and relates to the technical field of air conditioners. The air conditioner outdoor unit comprises a machine shell; the fan is arranged in the machine shell; the compressor is arranged in the machine shell; the sound collection module is arranged in the machine shell, is close to the fan and the compressor and is used for collecting a first sound signal; the first sound signal comprises at least one of compressor noise and fan noise; the control module is connected with the sound acquisition module and is used for determining a noise total value and a noise peak value of the first sound signal and generating a control electric signal according to a comparison result of the noise total value and the noise peak value; the piezoelectric braking module is arranged on the machine shell, is connected with the control module and is used for generating deformation under the action of the control electric signal so as to drive the machine shell to vibrate, and a reverse sound wave signal generated by the vibrating machine shell is used for weakening the first sound signal. The air conditioner outdoor unit can achieve active noise reduction.

The present disclosure relates to a method and device for acoustically imaging fan noise, an electric vehicle charging pile, and a storage medium. The method comprises: acquiring a noise time-domain signal generated by a fan when the fan is running; performing time-frequency conversion on the noise time-domain signal based on a short-time Fourier transform algorithm to obtain a noise frequency-domain signal; inputting the noise frequency-domain signal into a delay-and-sum beamformer to perform beamforming to obtain beam data; positioning principal component data of the beam data to obtain sound power data; and generating a sound image containing a sound source position according to the sound power data. In this embodiment, the resolution of the noise can be improved by positioning the principal component of the beam data, which achieves the effect of accurately positioning the sound source position and is conducive to obtaining a more accurate sound image.

This invention discloses a broadband duct silencing structure combining perforated tubes and cavities. The structure uses a galvanized housing as its main body, with perforated tubes coaxially arranged inside. A perforated partition divides the structure into front and rear silencing chambers. The front silencing chamber contains a first sound absorber and an air layer, forming a Helmholtz resonant cavity to efficiently eliminate low-frequency fan noise. The rear silencing chamber is filled with a second sound absorber and is equipped with perforated tubes, micro-perforated tubes, and micro-perforated inserts with progressively smaller apertures, forming a gradient microporous structure to achieve broadband absorption of mid-to-high frequency noise. The structure utilizes the airflow in the duct to drive the impeller to rotate, which in turn drives a bidirectional reciprocating screw via bevel gear transmission. This drives a delivery rod and a one-way valve to form a directional airflow circulation. The sound absorber is automatically purged through the air duct and comb-shaped air duct to remove fiber dust, preventing secondary pollution and stabilizing acoustic performance. This invention combines the advantages of low-frequency resonance silencing and mid-to-high frequency gradient microporous sound absorption, featuring a compact structure, wide silencing bandwidth, and stable and reliable operation.

This invention relates to a range hood, comprising: a body, a baffle plate, and a fan cabinet. The body has an internal smoke collection chamber and includes a front panel and a top panel connected to the front panel. An air inlet is located at the bottom of the front panel, and an air outlet is located on the top panel. When the range hood is operating, the fan cabinet provides suction, causing the cooking fumes in the kitchen space to enter the first chamber through the air inlet, then enter the air intake side of the fan cabinet, and are discharged outwards into the common flue through the air outlet and the air outlet. During normal use, the air in the second chamber is blocked by the baffle plate from entering the first chamber, thus preventing turbulence with the air entering the fan cabinet from the air inlet. This allows the fan cabinet to concentrate the smoke intake from the air inlet, optimizing the smoke extraction effect and reducing the fan cabinet's operating frequency, thereby reducing fan noise and saving energy.

The application provides a device heat dissipation adjustment device and a VR device. The device comprises a noise detection module and a heat dissipation control module. The noise detection module and the heat dissipation control module are in communication connection. The noise detection module detects the environmental noise of the environment where the device is located and the fan noise generated by the heat dissipation fan, and sends the environmental noise and the fan noise to the heat dissipation control module. The heat dissipation fan is arranged in the device to dissipate heat of the device. The heat dissipation control module adjusts the rotating speed of the heat dissipation fan according to the environmental noise and the fan noise. Compared with the prior art, the device heat dissipation adjustment device can adjust the rotating speed of the heat dissipation fan according to the environmental noise and the fan noise generated by the heat dissipation fan, so that the device reaches a balance between user experience and heat dissipation noise by dynamically adjusting the rotating speed of the heat dissipation fan, thereby enabling the user to obtain a better experience.

The utility model belongs to the technical field of medical equipment, and particularly discloses a mounting structure for reducing noise of a fan of a breathing machine, which comprises a fan, a shell and a fan seat, a mounting groove is arranged at the bottom of the shell, and a first air guide groove matched with the fan is arranged on the side edge of the shell; the fan is mounted in the fan seat, and the fan seat is mounted in the mounting groove through a buffer part; a sound absorption cover is fixedly connected to the inner wall of the periphery of the fan base. When the breathing machine works, noise caused by airflow or vibration of the fan is reduced, the comfort level of a user is improved, and meanwhile, the shell outer cover and the detachable filter screen cover body are arranged, so that the filter screen is convenient to replace.

The utility model relates to the technical field of ventilation treatment, and discloses a ventilation component and ventilation treatment equipment. The ventilation component is used for being arranged in the ventilation treatment equipment and comprises a ventilation pipe body (11), a curve air channel (111) used for prolonging an airflow circulation path is defined in the ventilation pipe body (11), and an air inlet (112) of the air channel (111) is used for being correspondingly communicated with a main machine air inlet (22) of the ventilation treatment equipment. And an air outlet (113) of the air passage (111) is used for being correspondingly communicated with an air inlet of a fan (21) in the ventilation treatment equipment. According to the ventilation component provided by the utility model, the curved air channel is arranged in the ventilation component to guide the air flow to flow and prolong the air flow flowing path, so that on one hand, the effect of extending the air path can be realized through three-dimensional folding in a smaller space, and on the other hand, the noise of a fan can be prevented from being transmitted out, thereby realizing the purposes of flow stabilization and noise reduction.

The embodiment of the application discloses a fan noise reduction method and device, electronic equipment and computer readable storage medium, and belongs to the technical field of noise reduction. The method comprises the following steps: obtaining running state information and running condition information of a target fan; identifying the running state information to obtain noise source information; determining a target control parameter based on the noise source information and the running condition information; and performing noise reduction processing on the target fan based on the target control parameter. In this way, by accurately identifying the noise source information in the running state information of the target fan, the appropriate target control parameter can be determined in combination with the running condition information, the targeted noise reduction processing of the target fan is realized while ensuring the stable operation of the target fan, thereby effectively improving the noise reduction effect and improving the quiet comfort of the user.

The utility model discloses a fire-fighting fan noise reduction and sound insulation assembly, which relates to the technical field of fire-fighting fans, and comprises a mounting underframe and a protection assembly, a synergistic plate is arranged outside the mounting underframe, and the protection assembly suitable for noise reduction and sound insulation of fire-fighting fans of different sizes is arranged at the upper end of the mounting underframe. And the protection assembly comprises an adjusting top frame, a fixing plate, a sound insulation plate, a mounting rubber block and a connecting plate, the fixing plate is mounted on the side edge of the adjusting top frame, and the sound insulation plate is arranged on the inner side of the adjusting top frame. According to the noise reduction and sound insulation assembly for the fire-fighting fan, the noise reduction and sound insulation effect is enhanced outside the assembled adjusting top frame and mounting bottom frame through the slidably-mounted synergistic plate made of the sound absorption material, and the rectangular space formed by the adjusting top frame and the mounting bottom frame is matched with the sound insulation plate outside the fire-fighting fan to achieve the noise reduction and sound insulation effect; and the mounting rubber blocks and the inner sides of the connecting plates can be used for mounting the fire fans with different sizes.

The utility model belongs to the technical field of Ethernet access equipment. The Ethernet access equipment fan frame device comprises a fan frame body, a front end fixing device and a rear end fixing device, the fan frame body comprises a frame body defined by a bottom plate, two lateral plates and a front panel, the upper edge of the front panel is provided with an upper extending edge, the front panel is provided with a plurality of heat dissipation holes, and the bottom plate is provided with a plurality of heat dissipation holes. The bottom plate is provided with lower positioning supporting columns and fixing holes, the upper extending edge is provided with a plurality of upper positioning supporting columns, the front end fixing device comprises a front end fixing plate, the upper edge and the lower edge of the front end fixing plate are each provided with a plurality of lug wings, each lug wing is provided with a clamping groove, and the rear end fixing device comprises a rear end mounting plate. The two ends of the rear end mounting plate are provided with rear end mounting lug plates which can be fixedly connected with a fan shell. The fan frame device is convenient to assemble, meanwhile, the stability of the fan frame is improved, the fan noise is reduced, the structure is simple, the manufacturing process is simple, the production efficiency is effectively improved, and the production cost is reduced.

This application discloses a control method, control device, electronic device, and computer-readable storage medium for a piezoelectric fan, relating to the field of fan control technology. The piezoelectric fan is connected to a device to be cooled. The control method includes: determining the operating level of the piezoelectric fan based on the hot spot temperature of the power device and the casing temperature of the device to be cooled; the operating level includes an off level, a low-power optimal operating level, and a full-power level; and when the operating level of the piezoelectric fan is the low-power optimal operating level, adjusting the driving voltage and operating frequency of the piezoelectric fan according to a multi-objective function until the parameters of the multi-objective function are reduced to a minimum value, the parameters of the multi-objective function including the fan power consumption and fan noise of the piezoelectric fan. This application ensures that the piezoelectric fan maintains low power consumption and low noise operation while ensuring safe heat dissipation.

The utility model provides a fan with noise reduction function relates to fan noise reduction technical field, including ventilation pipe still includes the vibration reduction subassembly, and the vibration reduction subassembly includes the soundproofing cotton fixedly connected in the inside of ventilation pipe, the inside fixedly connected with the positioning plate of ventilation pipe, the inside fixedly connected with the inner side plate of one end of ventilation pipe close to the positioning plate, the refraction subassembly, the refraction subassembly includes the refraction board fixedly connected in the inside both ends of ventilation pipe, the inside of refraction board is provided with the resilience angle, the inside of resilience angle is provided with the inner recess, the inside fixedly connected with the ventilation subassembly of ventilation pipe, like this design has realized the stable form of soundproofing cotton under the high speed airflow, suppresses ventilation pipe thin wall resonance, reduces the eccentric vibration of fan blade, thereby effectively solved the secondary structure radiation noise caused by motor and impeller unbalance excitation, from the source controlled mechanical noise, weakened the vibration transmission problem caused by eccentricity.

The embodiment of the invention provides a fan noise reduction method and device, a storage medium and an operation machine. The method comprises the steps of starting the heat dissipation device; when the fan is in the first mode, the fan is driven to dissipate heat of the cooling liquid till the cooling liquid reaches the target temperature, and the fan is driven to move by a preset distance towards the side away from the liquid level of the cooling liquid; when the driving fan moves by a preset distance towards the side away from the liquid level of the cooling liquid, whether the current temperature of the cooling liquid meets a liquid temperature balance condition or not is determined according to the current temperature of the cooling liquid and the target temperature, and the liquid temperature balance condition is determined based on the target temperature; under the condition that the current temperature of the cooling liquid meets the liquid temperature balance condition, returning to the step of driving the fan to move towards one side far away from the liquid level of the cooling liquid by a preset distance; and when the current temperature of the cooling liquid does not meet the liquid temperature balance condition, the immersion depth corresponding to the fan is determined, and the immersion depth of the fan can be rapidly, simply and conveniently adjusted.

The present invention discloses a low-noise ventilation device, comprising a fan and a piping system. The fan comprises a housing (1), an impeller (2), a motor (3), and a flow guide (4). The housing comprises an upper shell plate (11) and a lower shell plate (12). The impeller comprises a chassis (21) and blades (22). The fan is a cross-flow fan, characterized in that a noise reduction structure is provided on the lower side of the chassis (21). The noise reduction structure comprises a plurality of recessed portions (23), each of which extends radially and comprises a plurality of arc-shaped recesses. The present invention can suppress turbulence in the impeller cavity, reduce fan noise, and adjust the wind performance of the fan.

The present disclosure provides a fan structure of an open rotor engine and an open rotor engine. The fan structure comprises: a hub; rotor blades and stator blades which are sequentially arranged along an airflow direction on an outer periphery of the hub; wherein a trailing edge of the rotor blades is provided with a first noise reduction structure, the first noise reduction structure comprising a plurality of first holes formed on a surface of the rotor blades and a plurality of dissipation cavities located inside the rotor blades, each first hole being in communication with at least one dissipation cavity, and / or a leading edge of the stator blades is provided with a second noise reduction structure, the second noise reduction structure comprising a plurality of fairing portions protruding from a surface of the stator blades, a surface of the fairing portions facing the airflow direction being a smooth curved surface. The open rotor engine comprises the aforementioned fan structure. The fan structure and the open rotor engine provided by the present disclosure can effectively reduce fan noise.

A fan noise reduction method and apparatus, and an embedded controller and an electronic device. The method comprises: S301, acquiring first control parameters for a first fan; S302, on the basis of preset configurations, determining second control parameters for at least one second fan that correspond to the first control parameters for the first fan, wherein the preset configurations comprise a plurality of fan parameter combinations, any fan parameter combination comprises the first control parameters for the first fan and the second control parameters for the at least one second fan, and the fan parameter combination causes fan noises to at least partially cancel each other out at a noise reduction position; and S303, on the basis of the second control parameters for the at least one second fan, controlling the at least one second fan. Thus, fan noise produced by a first fan and one or more second fans that operate in combination with the first fan at least partially cancel each other out at a noise reduction position, thereby reducing the fan noise.

The invention discloses a noise reduction fan, an energy storage tank and a vehicle-mounted refrigerator, the noise reduction fan comprises a fan base, a fan mounting plate, a fan body, a noise reduction structure and a damping structure, and the interior of the fan base is hollow and circular; the fan mounting plate corresponds to the fan base in shape and is detachably mounted on one side of the fan base; the fan body is detachably mounted on the other side of the fan base and blows air towards the fan mounting plate; the noise reduction structure is arranged in the fan mounting plate and is used for reducing noise of the noise reduction fan; the damping structure is arranged between the fan base and the fan body and used for damping of the noise reduction fan. The noise reduction structure and the damping structure are used in cooperation, so that airflow generated during fan operation can be effectively divided and buffered, airflow noise can be weakened, mechanical noise generated by fan vibration can be absorbed, the dual noise reduction effect is remarkable, the fan noise in a vehicle-mounted closed space can be effectively reduced, and the comfort level of the environment in a vehicle is improved.

The present application relates to the technical field of fan noise reduction, and specifically provides an axial flow fan, an axial flow fan design method, a fan assembly, and a chassis. The axial flow fan comprises a hub and at least two fan blades. The at least two fan blades are mounted on the outer peripheral surface of the hub in an annular array, and the fan blades are arranged obliquely relative to the axis of the hub. Each fan blade comprise a blade root and a blade tip; the blade root is connected to the hub; the blade tip is located at the end of the fan blade extending radially from the hub; the blade root smoothly extends to the blade tip; the size of the mean camber line in the circumferential section of the fan blade gradually increases; a leading edge and a trailing edge are provided between the blade root and the blade tip; and the leading edge and the trailing edge are bent into an arc shape towards the rotation direction of the fan blade. The axial flow fan provided by the present application can achieve a balance among airflow, air pressure, and noise.

A rotary component for a gas turbine engine includes a plurality of rotor blades operably coupled to a rotating shaft extending along the central axis and an outer casing arranged exterior to the plurality of rotor blades in a radial direction of the gas turbine engine. The outer casing defines a gap between a blade tip of each of the plurality of rotor blades and the outer casing. The outer casing includes a plurality of features formed into an interior surface thereof. Each of the plurality of features includes one or more design parameters that are perturbed about a mean design parameter for stall performance so as to provide a circumferential variation in wake strengths associated with the plurality of rotor blades, thereby reducing operational noise of the gas turbine engine.

The present application relates to the technical field of ventilation treatment, and discloses a ventilation component and a ventilation treatment device.The ventilation component is arranged in the ventilation treatment device and comprises a ventilation pipe body (11), the inside of the ventilation pipe body (11) is defined with a curved air passage (111) for prolonging the air flow circulation path, the air inlet (112) of the air passage (111) is used for corresponding communication with the main machine air inlet (22) of the ventilation treatment device, and the air outlet (113) of the air passage (111) is used for corresponding communication with the air inlet of the fan (21) in the ventilation treatment device.The ventilation component provided by the present application can guide the air flow and prolong the air flow path by arranging the curved air passage in the ventilation component, so that the effect of air path prolonging can be achieved by three-dimensional folding in a smaller space, and the fan noise can be blocked from being transmitted out, so that the purposes of stable flow and noise reduction are achieved.