28results about How to "Reduce wind noise" patented technology

The present disclosure relates to an axial flow fan blade, a fan assembly, an air conditioner outdoor unit and an air conditioner. The axial flow fan blade comprises a hub and a plurality of blades arranged on the outer side of the hub, each blade comprising a pressure surface and a suction surface arranged oppositely, each blade comprising a blade inner edge and a blade outer edge arranged oppositely, and each blade further comprising a blade leading edge and a blade trailing edge arranged oppositely. Each blade is divided into a first region, a second region and a third region in a circumferential direction. The first included angle of the first region, the second included angle of the second region and the third included angle of the third region are selected to be in a ratio of 1:1.25-1.9:1.25-1.9.

The utility model discloses a kind of automobile A column reinforcing member based on lightweight design, it is related to the technical field of automobile parts, including external steel body, the inside of external steel body is equipped with main body reinforcing component, the inside of main body reinforcing component is equipped with energy-absorbing member, the side of external steel body away from the surface of main body reinforcing component is equipped with sound insulation cotton.The utility model can make the internal structure of automobile A column more stable by main body reinforcing component, reduce the deformation due to collision, protect front compartment safety, by energy-absorbing member, local shock wave can be offset, ensure that front compartment living space is not deformed, while the material density of energy-absorbing member is smaller, the overall weight of A column can be reduced, so as to reduce the weight of entire vehicle body, reach the effect of reducing fuel consumption, while external steel body is fixed together by hinge hole bolt and angle steel bolt, compared with general welding mode, when maintaining, avoid cutting A column, cause stress concentration of A column, affect the safety of overall A column structure.

The utility model belongs to the technical field of cooking equipment, and particularly provides a cooking utensil and a silencing component. In order to solve the problem that air noise is large when an existing cooking utensil exhausts air, the cooking utensil comprises a machine body, a machine cover and a silencing component. The machine body is provided with a cooking cavity. The machine cover is used for opening and closing the cooking cavity, and an exhaust channel is formed in the machine cover and used for exhausting gas in the cooking cavity. The silencing component is embedded into the exhaust channel, a silencing channel is defined by the silencing component and the peripheral wall of the exhaust channel, and the through-flow area of the silencing channel is alternately increased and decreased, so that the flow speed of gas is repeatedly increased and decreased, and the wind noise is reduced.

The utility model discloses a kind of air intake structures of rear air intake hair dryer. It includes: air duct body;Several air inlets, set in the air intake end of the air duct body and located on the side wall of the air duct body;Fan module, set between the air intake end of the air duct body and the air outlet end of the air duct body;Flow guide plate, set in the inside of the air duct body and located between fan module and air inlet;Several flow guide holes, set on the flow guide plate;Transition fillet, set at the port of both ends of flow guide hole.The beneficial effects of the utility model are: reduce the wind noise of the air intake end of air duct body;It plays the role of protecting internal components, improves the service life of hair dryer;Increase wind speed;Increase the structural strength of filter screen;Filtering effect is good;Reduce fan noise.

The application discloses a curve saw, which comprises a first air duct, a second air duct and a third air duct formed in the interior of a shell and communicated with each other, and an air duct switching device is arranged between at least two of the air ducts, the air duct switching device comprises a push button exposed at least partially to the shell and a conversion piece located in the interior of the shell, the conversion piece is horizontally movable under the drive of the push button to control the switching of the air ducts in the open or closed state. The third air duct allows air flow to flow in or out as an independent heat dissipation air duct and keeps the same open or closed state with the second air duct. When the curve saw is in the dust collection mode, the heat generated in the transmission cavity in the interior of the curve saw can flow out of the curve saw through the third air duct, and heat dissipation is more efficient. The side wall of the third air duct is also penetrated by an air duct circulation hole, which allows the air flow in the third air duct to re-enter the transmission cavity, forms the circulation flow of part of the air flow, and achieves more balanced and more continuous temperature control, and the generated air noise is smaller.

This application discloses a down-blowing bathroom heater window, including a window frame and glass. The window frame includes a lower part, with a down-blowing air inlet on the outer side of the lower part. A heating element and a warm air fan are housed inside the lower part, and the warm air fan is connected to the down-blowing air outlet on the inner side. The beneficial effects of this application are: the down-blowing air outlet is close to the ground, forming a bottom-up heating method. The overall thermal effect of the space is more even under the operation of the warm air fan, solving the common problem of ceiling-mounted bathroom heaters not easily warming lower spaces, optimizing the heating path, and ensuring heating effect; the embedded installation of the device is achieved based on the window opening and window frame, making full use of the internal space of the window frame without occupying additional space, ensuring the utilization rate of indoor space, ensuring the comfort of using the device, and also significantly reducing wind noise caused by the high-power fan due to the window opening.

The utility model provides an earphone and an earphone assembly. The earphone comprises a shell, a sound production unit and a sound reception unit. A sound inlet is arranged in the housing. The sound production unit and the sound reception unit are arranged in the housing. The sounding unit is arranged on one side, close to the auricular conchae, of the sound receiving unit. The sounding unit is electrically connected with the radio unit. A first pickup hole, a pickup channel and a second pickup hole which are integrally formed through injection molding are formed in the shell. The first pickup hole and the second pickup hole are arranged on two opposite sides of the shell along the first direction and are used for communicating with the external environment. The pickup channel is communicated with the first pickup hole and the second pickup hole along the first direction. The sound inlet is arranged on one side of the pickup channel along the second direction and is used for communicating the pickup channel with the sound receiving unit. The pickup channel is isolated from the sounding unit. Wherein the first direction intersects with the second direction. According to the earphone provided by the embodiment of the invention, the processing procedure after the shell is formed can be omitted, and the production cost of processing and manufacturing is reduced.

This utility model discloses a vibration-damping and noise-reducing silent heat sink, including a heat sink assembly, a fan, and a base plate. It also includes a vibration-damping connector and a flow guide shroud. The vibration-damping connector is made of an elastic material and has a ring-shaped structure, nested between the fan and the flow guide shroud. The flow guide shroud surrounds the air outlet side of the fan, and its inner wall has a spiral flow guide groove. The heat sink assembly includes multiple wavy, non-equidistantly arranged heat dissipation fins, forming a gradually expanding airflow channel. The bottom of the base plate has a honeycomb-shaped vibration-damping cavity filled with damping adhesive. The three-stage vibration-damping structure significantly reduces vibration transmission rate, reduces resonance, and extends equipment life. The spiral flow guide groove, sound-absorbing grille, and wavy fin phase difference design significantly reduce wind noise and structural noise.

The utility model discloses an upward blowing type heater which comprises a window frame and glass, the window frame comprises a window frame lower body, a lower air inlet is formed in the outer side of the window frame lower body, a heating element and a warm air fan are arranged in the window frame lower body, and an upward blowing air supply outlet communicated with the warm air fan is formed in the inner side of the window frame lower body. The device has the beneficial effects that embedded installation of the device is achieved based on the window opening and the window frame, hot air supply at the low position is achieved, the internal space of the window frame is fully utilized, other space is not additionally occupied, the indoor space utilization rate is guaranteed, the use comfort of the device is guaranteed, and wind noise caused by a high-power fan can be obviously reduced based on the window opening; the heating device achieves dual purposes in an upward blowing mode, provides warm air for the interior of a room and can achieve drying at the same time, a half of a heating main machine is saved, supporting facilities are obviously saved, materials are saved, and the cost is reduced by about a half.

This invention discloses an air supply device assembly, including an air duct assembly and an air outlet assembly for generating airflow. The air duct assembly includes a front frame, a middle frame, and a rear frame for forming the air duct. The rear frame forms an air inlet on one side of the middle frame, and the front frame forms an air outlet on the other side of the middle frame. The middle frame is closed around the air duct, and a funnel-shaped air guide portion is formed on the middle frame corresponding to the air inlet. Multiple air guide grooves are formed on the air guide portion in the circumferential direction. The air guide grooves are arranged with respect to the airflow path. The air guide portion and the air guide grooves limit the airflow path in the air duct and constrict the airflow at the air outlet, thereby increasing the air outlet effect.

The utility model discloses an exhaust device of a range hood. The exhaust device comprises an exhaust fume collecting hood, an air inlet duct and an exhaust duct, a purification box is fixedly connected to the front side of the exhaust fume collecting hood, a filter screen is inserted into the purification box, sliding blocks are fixedly connected to the two sides of the filter screen, a handle is fixedly connected to the top of the filter screen, a guide plate is fixedly connected to the interior of the exhaust fume collecting hood, an air inlet duct is fixedly connected to the tail of the exhaust fume collecting hood, the air inlet duct is a gradually-shrinking air duct and gradually shrinks from an opening of the exhaust fume collecting hood, and a fan is fixedly connected to the tail end of the air inlet duct. The top of the draught fan is fixedly connected with a power source, the top of the power source is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a solar panel, and the exhaust duct is fixedly connected to the other end of the draught fan. The rotating speed of the draught fan can be automatically adjusted according to the oil smoke concentration, the smoke exhaust efficiency is improved, and the air flow resistance and the air noise are reduced through the gradually-shrinking and gradually-expanding design of the air inlet duct and the air exhaust duct.

The utility model discloses an electric heating warmer of noise reduction, and the device includes: the warmer shell, be equipped with electric heating element in the warmer shell, electric heating element one side is equipped with fan assembly, the warmer shell is located in one end of fan assembly and is equipped with the air outlet, the warmer shell is located in the opposite end of air outlet and is equipped with the air inlet, the air outlet and air inlet all are equipped with the sound absorption cotton layer and honeycomb formula sound attenuation grid, the inner wall of warmer shell is equipped with the corrugated flow groove. The utility model has the advantages of: the sound absorption cotton layer and honeycomb formula sound attenuation grid that the air outlet and air inlet set, form double -deck sound attenuation structure, effectively reduce the mechanical noise that fan assembly generates and the wind noise that the airflow passes the air hole forms, the corrugated flow groove of warmer shell inner wall changes the airflow direction, breaks the regularity fluctuation of airflow, reduces the vortex generation, further weakens the wind noise and the resonance sound of internal element.

The utility model discloses an upward blowing type warm air drying device which comprises a window frame and glass, the window frame comprises a window frame lower body, a lower air inlet is formed in the outer side of the window frame lower body, a heating element and a warm air fan are arranged in the window frame lower body, an upward blowing air supply outlet communicated with the warm air fan is formed in the inner side of the window frame lower body, and a rolled inner side blind is arranged on the inner side of the window frame. And the inner side blind is close to the inner side relative to the upper blowing air outlet. The window has the beneficial effects that the blind on the inner side of the window opening and the glass on the outer side of the window opening form a closed space, the drying chamber is formed in the window opening, stable heat energy and blowing of the draught fan can be obtained more easily in the drying chamber, warm air is provided for the interior of the room, drying can be achieved at the same time, a half of a heating main machine is saved, supporting facilities are also obviously saved, and the cost is reduced. Materials are saved, and cost is reduced by about half.

The invention relates to the field of energy-saving ventilation, in particular to energy-saving ventilation equipment for a green building. The existing ventilation equipment convenient for energy conservation is difficult to fully utilize wind power resources in natural resources, and the supplied air quantity fluctuates greatly. An energy-saving ventilation device for a green building comprises a supporting gas conveying pipe, a first supporting plate, a second supporting plate, a flow guide frame and the like. The supporting gas conveying pipe is sequentially and rotationally connected with a first supporting plate and a second supporting plate from bottom to top, the first supporting plate and the second supporting plate are jointly and fixedly provided with a flow guide frame, and an upper exhaust hole and a lower exhaust hole are formed in the side, close to the supporting gas conveying pipe, of the flow guide frame from top to bottom. The supporting air conveying pipe is used for conveying flowing air into the ventilation pipeline in the building, compared with a traditional air supply mode, electric power resources are effectively saved, natural environment resources can be fully utilized on the premise that the ecological environment is not damaged, and the concept of environment-friendly design of the green building is met.

The utility model relates to the technical field of air conditioner ventilation systems, in particular to a flow guide type low-frequency flow dividing tee joint which comprises a box body and a silencing body arranged in the box body, one end of the silencing body extends inwards to be provided with an air inlet channel, and the two sides of the silencing body extend inwards to be provided with air outlet channels respectively. The air outlet channels are communicated with the air inlet channel in the silencing body, an air inlet is formed in the box body and right opposite to the air inlet channel, an air outlet is formed in the box body and right opposite to the air outlet channels, and a resistant silencing cavity is formed between the air inlet channel and the two air outlet channels; in practical application, airflow enters the air inlet channel from the air inlet, is exhausted from the two air outlets after being silenced by the resistant silencing cavity, and absorbs noise generated by the airflow through the silencing body and the resistant silencing cavity, so that the noise reduction effect is good; pressure loss and wind noise can be effectively reduced, and the wind noise is prevented from entering a downstream area along with the air pipe.

The application discloses a kind of muffler pipe and air duct machine with it, the muffler pipe includes multiple noise reduction modules, multiple the noise reduction module splicing and enclose the muffler pipe, the inside of the muffler pipe defines airflow passage, the noise reduction module has resonance cavity and the communication hole that communicates with the resonance cavity, the resonance cavity is communicated with the airflow passage by the communication hole.According to the muffler pipe of the application, by splicing and surrounding the muffler pipe using multiple noise reduction modules, the sound absorption effect of the muffler pipe can be increased, the air outlet noise of the air duct machine can be reduced, and the use experience of the air duct machine can be improved.

An inlet of a coil holder sleeve of the air duct assembly is connected with a tubular support, a support cover is arranged on the side, away from the coil holder sleeve, of the tubular support, a high-speed motor is arranged in the tubular support, and an inner air inlet net is of a barrel-shaped structure with an opening at one end. The open end of the inner air inlet net is buckled to the side, away from the tubular support, of the support cover. By means of the honeycomb net of the support cover and the meshes distributed on the inner air inlet net, airflow is divided into a plurality of strands of small airflow twice, the airflow is rectified before entering a high-speed motor, the airflow is rectified after entering the high-speed motor, the airflow is rectified after entering the high-speed motor, and the airflow is rectified after entering the high-speed motor. The flow speed and the flow of the airflow are stabilized, the influence of turbulent flow is reduced, the airflow entering the high-speed motor is more stable, the influence of airflow disturbance on an air inlet of the high-speed motor is reduced, the wind noise is reduced, and the noise reduction effect is achieved.

This utility model belongs to the field of air conditioning technology, specifically providing a heat exchanger and air conditioner with better overall performance. This utility model aims to solve the problem of poor overall performance in existing heat exchangers. To this end, the heat exchanger of this utility model includes refrigerant pipes and multiple fins. The diameter d of the refrigerant pipe is selected from any value between 5.8mm and 6.5mm, and the refrigerant pipe includes multiple pipe segments. The distance H between two adjacent pipe segments is selected from any value between 17.1mm and 22.5mm. Multiple fins are penetrated by the multiple pipe segments, and the width W of the fins is selected from any value between 18mm and 23mm. The distance L between two adjacent fins is selected from any value between 0.8mm and 1.5mm. This utility model effectively avoids increased air resistance while ensuring heat exchange, thus improving the overall performance of the heat exchanger.

The application discloses a side turn light mounting assembly, a door body of a vehicle and the vehicle, and the side turn light mounting assembly comprises a mounting cover plate and a turn light component, the mounting cover plate is provided with a first light transmission area; the turn light component is arranged on one side of the mounting cover plate and comprises a shell and a light emitting element, the shell is provided with a second light transmission area which is arranged opposite to the first light transmission area, and the light emitting element is arranged in the shell; and light emitted by the light emitting element is adapted to be emitted out through the first light transmission area and the second light transmission area. According to the side turn light mounting assembly provided by the application, the turn light component is mounted in the mounting cover plate, and the mounting cover plate is connected with the vehicle body; therefore, the joint gap of the vehicle body is overlapped with the modeling feature line as much as possible, the additional joint gap of the vehicle body is reduced, and the appearance is improved.

The utility model discloses a table type water purifying and drinking machine which comprises a base and a shell, a refrigerating system is arranged in the shell and comprises an ice container, a refrigerating piece and an air guiding and heat dissipating piece used for dissipating heat of the refrigerating piece, the shell comprises an air inlet area and an air outlet area, a heat dissipating fan is arranged between the air inlet area and the air guiding and heat dissipating piece, the air inlet area is provided with an air inlet channel, and the air outlet area is provided with an air outlet channel. The air outlet area is provided with an air outlet channel and a shielding part, the air outlet channel inclines towards the air inlet area, the air guide heat dissipation piece is provided with a flow guide inclined face, the flow guide inclined face can guide airflow blown to the air guide heat dissipation piece by the heat dissipation fan towards the air outlet channel, and the shielding part inclines relative to the air outlet channel and shields the internal view of the shell. According to the scheme, a directional flow guide airflow heat dissipation path is formed, the flowing direction of airflow is optimized, disordered diffusion of the airflow in the shell is avoided, the airflow intensively flows through the high-temperature area of the air guide heat dissipation piece, the good heat dissipation effect is achieved, elements in the shell are invisible through the shielding part, the appearance integrity is remarkably improved, and the visual attractiveness of a machine is improved.

A wearable two-way communication audio device includes: a first microphone providing a first microphone signal; a second microphone that provides a second microphone signal; and one or more processors. The one or more processors are configured to estimate an ambient noise level using the second microphone signal and adjust the equalization filter based on the estimated ambient noise level. The first microphone signal and the second microphone signal may be processed via a first beamformer to provide a first beamformed signal, and the first beamformed signal may be filtered with an equalization filter to provide a noise estimation signal. The one or more processors may also use the noise estimation signal to generate a voice output signal for transmission to a remote recipient.

The application discloses a lower apron assembly and a vehicle, and solves the technical problem that the lower apron of the prior art does not cover the position of a suspension, so that the coverage of the lower apron in the area is discontinuous, vortex and turbulence phenomena caused by gas flow are obvious, and the aerodynamic drag of the whole vehicle is large. The lower apron assembly comprises a lower apron body and a suspension lower apron, the suspension lower apron covers the suspension part of a vehicle chassis, the suspension lower apron is connected with the lower apron body and a suspension assembly of the vehicle respectively, the suspension lower apron is made of an elastic material so that it can deform correspondingly with the up-and-down swing of the suspension assembly, and the suspension lower apron is provided with a avoiding part at the position of a vehicle wheel, which can avoid motion interference, the suspension lower apron covers the suspension part of the vehicle chassis, so that the coverage of the lower apron assembly in the suspension area is continuous, vortex and turbulence phenomena caused by gas flow are avoided, and the aerodynamic drag of the whole vehicle is reduced.

This application relates to the field of vehicle component technology, and discloses a fixed glass assembly, a vehicle door, and a vehicle. The fixed glass assembly includes: a glass element; a bright strip frame having a first surface facing outwards along the width direction of the vehicle, the first surface including a first region and a second region distributed from front to rear along the length direction of the vehicle, the second region being recessed from the first region, at least the front edge of the inner surface of the glass element being fixed to the second region, and the outer surface of the glass element being flush with the first region; a support frame located on the edge of the inner surface of the glass element in a region not covered by the bright strip frame; the bright strip frame and the support frame are respectively used for connection with the door sheet metal of the vehicle door. The fixed glass assembly of this application, with its coordinated design of the bright strip frame and the glass element, eliminates the visual difference between the glass element and the vehicle body components, maintains the overall harmony of the vehicle's appearance, and also reduces wind noise and drag coefficient.

The air duct assembly comprises a coil holder sleeve, a tubular support, an inner air inlet net and a high-speed motor, one end of the tubular support is provided with an opening, the other end of the tubular support is provided with a honeycomb net, and an inlet of the coil holder sleeve is connected with the opening of the tubular support. The inner air inlet net is of a barrel-shaped structure with one end provided with an opening, and the opening of the inner air inlet net is arranged on the side, away from the coil holder sleeve, of the honeycomb net in a buckled mode. Air flow is divided into a plurality of small air flows twice through the honeycomb net of the tubular support and the meshes distributed on the inner air inlet net, so that the air flow is rectified before entering a high-speed motor, the flow speed and the flow rate of the air flow are stabilized, the influence of turbulent flow is reduced, the air flow entering the high-speed motor is more stable, and the air flow entering the high-speed motor is more uniform. The influence of airflow disturbance on the air inlet of the high-speed motor is reduced, the wind noise is reduced, and the noise reduction effect is achieved.

The utility model discloses an exhaust assembly of a dust collector and the dust collector, and solves the problems of loud noise and low cleaning efficiency of the exhaust assembly in the prior art. The air exhaust assembly comprises an upper cavity and a lower cavity, wherein a third filtering piece is arranged in the upper cavity; the lower cavity is located below the upper cavity and communicates with the upper cavity, and a rotary air outlet device is arranged in the lower cavity; the exhaust suction inlet is communicated with the lower cavity; in the dust collector, gas flowing out of a gas treatment device located on the upstream of the air exhaust assembly enters the rotary air outlet device through the air exhaust suction inlet, flows in the rotary air outlet device, then is exhausted upwards and flows to the third filter part, and then is discharged out of the third filter part. And the gas filtered by the third filtering piece is exhausted upwards through the air outlet end of the air exhaust assembly.

The application relates to a side wall trim assembly, a vehicle body outer trim assembly and a vehicle. The side wall trim assembly comprises a trim and a sealing element. A reserved gap is arranged between the circumferential side wall of the trim and a vehicle body panel. The sealing element comprises a first connecting section, which is close to the reserved gap and is arranged between the trim and the vehicle body panel. The projection of the first connecting section on a plane parallel to the first direction and the third direction is located within the projection range of the trim on the plane parallel to the first direction and the third direction. One end of the first connecting section in the second direction is connected with the trim, and the other end of the first connecting section in the second direction is provided with an abutting portion, which is used for abutting with the vehicle body panel. The side wall trim assembly is arranged as above, the demarcation line between the trim and the vehicle body panel can be highlighted, the wind noise can be reduced, and the machining precision of the trim and the production cost can be reduced.

The present application relates to a kind of blowing and sucking integrated machine, including big body component and detachably arranged on big body component dust cup component, dust cup component includes hollow dust cup and dust cup cover, big body component includes: shell, motor assembly, shell is hollow and includes middle part and the extension of being extended upwards along the two sides of middle part to outside, motor assembly is substantially arranged in middle part, middle part and extension form accommodating groove, dust cup component is at least partially arranged in accommodating groove, the axis direction of dust cup component and the axis direction of motor assembly are substantially parallel.The present application can realize the miniaturization of blowing and sucking integrated machine, modeling beautiful by component arrangement.