286results about How to "Avoid noise" patented technology

The utility model provides an electric hinge and an electric door and a steaming oven comprising the electric hinge, the electric hinge comprises a transmission assembly, the transmission assembly comprises a first connecting rod and a second connecting rod, the electric hinge further comprises a flexible connecting part, the first connecting rod and the second connecting rod are connected through the flexible connecting part, and the first connecting rod is connected with the second connecting rod through the flexible connecting part. The electric hinge further comprises a damping part, one end of the damping part is arranged on a support of the electric hinge, an output shaft of the damping part is hinged to the second connecting rod, and when the electric hinge is locked, the output shaft of the damping part provides resistance larger than reset elastic force of the electric hinge. And the resistance is smaller than the reset pulling force of the electric hinge. According to the electric hinge, the damping part is arranged and used for absorbing kinetic energy of the second connecting rod, so that the second connecting rod and the first connecting rod cannot directly abut against each other, and the situations of pause, collision and abnormal sound occurring in the door closing process of a door body connected with the electric hinge are reduced.

This invention discloses an installation structure for a perforated terracotta brick curtain wall, relating to the field of terracotta brick curtain wall technology. Its key technical points are: Firstly, a T-shaped connector is used to engage with a T-shaped groove on the back of the terracotta brick, allowing the brick to be directly hung on the connector while also adjusting the spacing of the bricks. Secondly, a central cylinder and a connecting column are interlocked on the connector, with a locking pin on the central cylinder corresponding to a spiral groove on the outside of the connecting column. Therefore, when the connecting column is pressed, the locking pin, guided by the spiral groove, drives the connecting column to rotate. Based on this, a middle plate is placed on the connecting column. Thus, during terracotta brick installation, the brick can be hooked by flipping the middle plate. This effectively solves the technical problem of existing terracotta brick curtain walls being difficult to replace and easily affecting load-bearing capacity, thereby achieving rapid installation of terracotta bricks, eliminating the need for extensive installation time and reducing the time and difficulty of high-altitude operations.

The invention relates to the technical field of sewage treatment, and discloses a sewage biochemical treatment process abnormity intelligent early warning method and system based on image recognition, and the method comprises the steps: periodically collecting a sludge image and water quality sensing data; extracting floc form, bubble distribution and color texture features of the image, and performing space-time alignment fusion with the sensing data to construct a multi-source fusion feature matrix; inputting the matrix into a pre-trained digital twin evaluation model, calculating a dynamic deviation degree between a current state and a normal working condition, and identifying an abnormal mode; and generating a graded early warning signal according to the deviation degree and the abnormal mode and pushing the graded early warning signal. The system comprises an online image acquisition unit and a water quality sensor array which are used for data acquisition, and a feature processing module used for feature processing and fusion. According to the scheme, early-stage, accurate and intelligent early warning of abnormality in the sewage biochemical treatment process is realized, the false report and missing report rate is reduced, and the accuracy and the reliability of the system are improved. And the operation stability and the regulation and control efficiency of the system are improved.

The utility model discloses a filterable cleaning agent raw material tank which comprises a tank body and a material receiving filter groove, the bottom of the tank body is conical and is provided with a discharging port, a feeding port is formed in the outer side surface of the tank body and located at a through hole, an elbow is arranged on the inner wall of the tank body and located at the through hole, and the material receiving filter groove is formed in the inner wall of the tank body and located below the elbow. The material receiving and filtering device is reasonable in structure, raw materials fall into the material receiving and filtering tank through the feeding port and the elbow feeding port, impurities are left in the material receiving and filtering tank through filtering of the filtering screen, the quality of the raw materials is guaranteed, the material receiving and filtering device is simple in structure and convenient to operate, and the material receiving and filtering device is suitable for popularization and application. And compared with an independent filter, the cost is greatly reduced, the processing is also simple, the improvement of a traditional raw material tank is facilitated, an inclined plate and a side baffle plate are arranged below the material receiving and filtering groove, and raw materials can flow to the inner wall of the tank body through the inclined plate, so that noise generated during feeding is avoided.

The invention discloses a semiconductor laser and a temperature control method, the semiconductor laser comprises an outer shell, a driving plate, a laser light source module and a liquid cooling plate, the outer shell is fixed on the liquid cooling plate, the driving plate and the laser light source module are both arranged on the liquid cooling plate, and the driving plate and the laser light source module are both located in the outer shell. The laser light source module comprises a light source shell, a vapor chamber, a TEC semiconductor chilling plate, a laser component PCB, a first temperature sensor and a second temperature sensor. According to the semiconductor laser and the temperature control method provided by the invention, the TEC semiconductor chilling plate is adopted to finely control the temperature of a laser component, heat dissipation is integrally performed through a vehicle body liquid cooling system, and the power consumption fluctuation is reduced while the stability of the internal temperature of the laser light source module is maintained.

The application discloses a Bayer image denoising method, which comprises the following steps: obtaining a Bayer image and performing a demosaicing operation to obtain an RGB image; converting the format of the RGB image to obtain a YUV image; performing image denoising on the Y channel of the YUV image to obtain Ynr; performing downsampling on the Bayer image to obtain four chrominance subgraphs R1, Gr1, Gb1 and B1; performing downsampling on the Ynr image to obtain four luminance subgraphs YR1, YGr1, YGb1 and YB1; performing guided filtering on the chrominance subgraphs by using the luminance subgraphs to obtain four chrominance filtered images R1nr, Gr1nr, Gb1nr and B1nr; performing guided filtering on each level of the luminance subgraphs and the chrominance subgraphs by using a Gaussian pyramid; and performing upsampling and weighted fusion on each level of the four chrominance filtered images and restoring the images to the original positions to output a Bayer denoised image. The application takes into account low-frequency and high-frequency signals, improves the image signal-to-noise ratio, and retains more image details.

The application belongs to the technical field of kitchen appliances, and particularly relates to a control method and device of an extractor hood and electronic equipment. The first offset displacement and the first vibration acceleration of a motor of the extractor hood are acquired, the vibration level of the motor is determined according to the first offset displacement and the first vibration acceleration, and the rotating speed of the motor of the extractor hood is adjusted according to the vibration level. The rotating speed of the motor is actively reduced, noise is avoided, vibration is inhibited, the abrasion and resonance effect of mechanical components are reduced, and the risk of structure loosening or part falling of the extractor hood caused by vibration is reduced.

The application discloses a Brillouin sensing device based on optical parallel differential pulse pairs and a working method, and belongs to the technical field of optical fiber sensing. In view of the problem that the prior art is difficult to consider high resolution, high precision and fast measurement, the device used by the application comprises: an optical source module, which is used to generate an optical carrier; a first optical path module, which is connected with the optical source module and is used to receive the optical carrier and generate optical parallel differential pulse pairs containing anti-Stokes and Stokes components and having different pulse lengths as pump light through double-frequency double-sideband pulse modulation; a second optical path module, which is connected with the optical source module and is used to generate double-sideband probe light; and a sensing optical fiber, which is connected with the first and second optical path modules respectively and is used to receive the pump light and the probe light and directly complete signal differentiation in the optical domain through stimulated Brillouin scattering. Thus, high resolution, high precision and fast measurement are synergistically optimized, the gain / loss mechanism can be flexibly switched, and the scene adaptability is enhanced.

An endoscope image enhancement method, system, medium and product, relate to the field of image processing. The method comprises: acquiring an initial endoscope RGB image and decomposing it into three gray channels R, G and B; constructing an initial gray mapping function to map all initial gray values to target gray values; based on the set of target gray values of each pixel point, determining the optimal mapping parameters corresponding to each gray channel through a preset optimization objective function, so that the color difference of the enhanced image reaches a preset enhancement ratio with respect to the color difference of the initial image; updating the initial gray mapping function to obtain the optimal gray mapping function corresponding to each gray channel; mapping all initial gray values to optimal gray values and fusing all gray channel images to obtain an enhanced endoscope RGB image. The present application can meet the high-precision detection requirement of identifying defects or abnormalities through color difference.

The utility model discloses a kind of metal composite material walkway plates, comprising: footpath cantilever support, footpath cantilever support is spacedly arranged multiple along the length direction of prefabricated beam, the fixed end of multiple footpath cantilever support is fixedly connected with prefabricated beam;Steel grating frame, steel grating frame is multiple, the length direction of each steel grating frame Two ends are respectively overlapped and fixed on adjacent two footpath cantilever supports;Continuous no-alkali glass fiber felt reinforced polyurethane rigid foam plate, polyurethane rigid foam plate is multiple, and it is flatly fixed on multiple steel grating frames;Guardrail, guardrail is fixed on the cantilever end of footpath cantilever support.The footpath step plate is combined use by steel grating frame and polyurethane rigid foam plate, can greatly improve the durability of footpath step plate, and has the advantages of light weight, high strength.

The utility model discloses a kind of automobile rear door decoration upper boards, comprising: panel main body, panel main body upper side has the radian of backward bending and folding edge portion, left and right sides and lower side are provided with the edge portion of backward folding and folding;3 U-shaped buckles are set on the back of radian and folding edge portion;Reinforced lining is overlaid on the back of radian and folding edge portion, and reinforced lining upper surface has the multiple buffer rib of supporting radian and folding edge portion, and has the inner sunken square hole corresponding U-shaped buckle, inner sunken square hole has the protrusion of the opposite end of U-shaped buckle;And reinforced lining has the 3 positioning branch portions of downward extension, and positioning branch portion has positioning round hole;Positioning column is set on the back of panel main body and corresponding positioning round hole;And multiple reinforcing ribs and screw mounting hole column are set on the back of panel main body.The utility model automobile rear door decoration upper board structure installation is stable, and structural strength is high, buffering performance is good, assembly is convenient, appearance texture is excellent, can satisfy the use demand of modern automobile rear door interior, with good practicality.

The utility model relates to the technical field of air compressors, and particularly discloses an air compressor with a bottom air inlet structure, the air compressor comprises a bottom plate, a top plate, a back plate, a panel and two side plates, the back plate, the panel, the side plates, the bottom plate and the top plate are connected to define a closed working cavity, and a first air inlet channel for air flowing is formed in each side plate; a first air outlet hole is formed in the side wall, close to the working cavity, of the first air inlet channel; the bottom plate is provided with a second air inlet hole, and air flows into the first air inlet channel through the second air inlet hole and enters the working cavity through the first air outlet hole. The air inlet holes are all located below the air compressor and hidden in position, the overall attractiveness and the design sense of the air compressor are effectively improved, and the space limitation is small when the air compressor is used; an airflow wall is formed when air flows in the air inlet channel from bottom to top, part of noise spread through airflow can be blocked, and the mute effect of the air compressor is improved.

This application relates to the field of sliding door technology and discloses an improved manual steel sliding door, including a support frame fixed to a wall, a steel guide rail, a steel door leaf, and a steel door frame located below. The steel door frame is fixedly installed at the bottom of the support frame, and the steel guide rail is detachably installed and fixed at the bottom of the support frame. The top of the steel door leaf is slidably connected to the steel guide rail. Sealing strips are installed and fixed on the sides of the steel door leaf and the steel door frame that are close to each other. A sealing component is provided at the bottom of the steel door leaf to seal the gap between the steel door leaf and the ground. This application has the following advantages and effects: it can significantly improve the sealing performance of manual steel sliding doors, effectively block dust, rainwater, and noise, provide a cleaner, quieter, and more comfortable indoor environment, and meet the needs of places with high environmental requirements.

The utility model provides a tricycle brake disc relates to brake disc technical field, including the support shell, the top fixedly connected with two support blocks of support shell, the top of support block is established with the axle hole, the bottom fixedly penetrates to the bottom of support shell of axle hole, the top of support shell is provided with the rotating lever, the top fixedly connected with the rotating plate of rotating lever, two the top of rotating plate is provided with the support plate, the inner wall rotationally connected with the axle of axle hole. The utility model, through fixedly connecting two support blocks in the top of support shell, and establishing the axle hole in the top of support block, makes rotating lever can drive rotating plate to carry out effective rotation control, the rotary connection of rotating plate and support plate makes whole brake system can realize more even brake force distribution, especially, in the design, the inner wall fixedly connected baffle of brake shell's one side, and fixedly connected through the spring, makes baffle can rebound quickly in the brake process, ensures that the contact of brake shoe and brake disc is more even.

This utility model relates to the field of magnet technology, and more particularly to a magnet with a sealing ring, comprising an axially magnetized magnet body, one end of which is formed with a plurality of first annular grooves, and the other end of which is formed with a plurality of second annular grooves. A first sealing ring is provided at the end of the magnet body near the first annular grooves, and the first sealing ring is formed with a plurality of first annular protrusions. A second sealing ring is provided at the end of the magnet body near the second annular grooves, and the second sealing ring is formed with a plurality of second annular protrusions. This utility model can not only reduce the rigid impact at the moment of adsorption, avoid generating unpleasant noise, and avoid the risk of breakage, but also greatly improve the sealing performance at the joint, prevent moisture, dust, and even insects from penetrating into the product and ensure the overall service life of the product, and is better suited for modular splicing products.

The invention relates to a transient electromagnetic signal denoising method based on self-adaptive fuzzy optimization singular spectrum analysis (SSA), which aims at denoising transient electromagnetic signals, and comprises the following specific steps of: 1, decomposing a noisy signal into a plurality of modes through a complementary ensemble empirical mode decomposition (CEEMD) method; and according to the sample entropy, classifying the modals into a signal-dominant category and a noise-dominant category. 2, taking a signal fuzzy entropy (FE) as a target function of each modal optimization, obtaining a strict boundary of each modal SSA reconstruction order by using a particle swarm optimization (PSO) algorithm, and taking a singular value in the strict boundary as a signal component; thirdly, solving loose boundaries of each modal reconstruction order through a singular value spectrum and a singular value difference spectrum, and generating a fuzzy interval by combining the loose boundaries with the strict boundaries; and 4, obtaining the membership degree of the singular value belonging to the signal or noise component in the fuzzy interval through a weighted fuzzy noise clustering algorithm (WFNC), and carrying out signal component reconstruction by taking the membership degree as a weight. And finally, adaptive reconstruction of each mode is carried out on the signal components by using an SSA method, and a de-noised signal is obtained through mode summation. According to the method, a low-signal-to-noise-ratio adaptive singular spectrum analysis denoising method is provided, the problem of wrong singular value selection in the reconstruction process is avoided, and the signal-to-noise ratio is effectively improved.

The utility model discloses a low noise silencing type reversing valve relates to reversing valve technical field, including valve body and valve core, the valve core sets up in the valve body, still includes the noise reduction mechanism, sets up on the valve body, the noise reduction mechanism includes: the noise reduction box sets up in the valve body with fixed connection with the valve body, the noise reduction spring has a plurality, and a plurality of noise reduction spring sets up in the noise reduction box with fixed connection with the noise reduction box, the noise reduction board has a plurality, and a plurality of noise reduction board sets up in the noise reduction box, the connecting piece has a plurality, and a plurality of connecting piece sets up on the valve body, the noise reduction cylinder has a plurality, and a plurality of noise reduction cylinder sets up on the connecting piece, the mounting mechanism sets up on the valve body. The device can directly reduce the noise generated when working through setting the noise reduction mechanism when the reversing valve works, and can also reduce the noise of the external connection position, prevent the noise from generating.

The application discloses a kind of semi-automatic coffee machine extraction pressure keeping mechanism including powder pressing handle, transmission gear, lifting frame with vertical rack and fixed ratchet disc;Brewing powder pressing head is installed at the lower end of lifting frame;Powder pressing handle is connected with transmission gear, and transmission gear is engaged with vertical rack, so that when powder pressing handle drives transmission gear, brewing powder pressing head moves up and down with lifting frame;Ratchet disc is provided with one-way ratchet by blocking surface and inclined sliding surface, and lock slot is formed between adjacent one-way ratchet;Control key and lock pin are provided on powder pressing handle, and control key controls lock pin to enter or exit lock slot;During the rotation of powder pressing handle, lock pin enters lock slot and jumps on continuous multiple inclined sliding surfaces with rotation;Blocking surface prevents reverse rotation of powder pressing handle to complete self-locking;It can be rotated smoothly in positive direction, and direction is automatically locked without additional operation, and individualized accurate selection of pressure can be realized.

The utility model relates to a hearing aid technical field, concretely relates to an ear hanging type hearing aid, include: a main part assembly for wearing at the head or neck of user, its end part setting has the host unit of built -in talk microphone, two ear hanging assemblies are connected to both ends of main part assembly respectively, and the ear hanging assembly is flexible arc structure, is used for around setting at the ear of user, two connecting assemblies are connected to an ear hanging assembly respectively, and at least one connecting assembly is equipped with hearing aid microphone, two receivers are connected to a connecting assembly respectively, and the receiver assembly is equipped with the ear -entering part to be used for putting into the ear canal of user. The ear hanging assembly is around setting on the ear, and the ear -entering part of receiver assembly cooperates to make the connecting assembly stably wear at the front side of ear of user, and hearing aid microphone can reliably receive the sound of the front and both sides of user, can also avoid the noise brought by the shaking or the friction, help the hearing aid accurate reception of external sound, improve the hearing aid effect.

This utility model provides a kitchen fume extraction system, which includes a range hood and an exhaust duct. The range hood is suspended from the ceiling and includes a smoke duct that connects to the exhaust duct in the ceiling. The system also includes a top-mounted fume extraction assembly positioned between the smoke duct and the exhaust duct, connecting the ceiling surface where the range hood is mounted to the exhaust duct. Therefore, this kitchen fume extraction system prevents cooking fumes from accumulating near the kitchen ceiling and avoids generating additional noise.

The utility model provides a tail door limiting structure and car, including limiting structure car body end assembly and limiting structure car door end assembly, limiting structure car body end assembly with limiting structure car door end assembly among any one installation is in car body side, and other installation is in car door side, when the car door closes or opens, limiting structure car body end assembly with limiting structure car door end assembly between through the convex and recessed part mutual coupling and disengaging, to form the stable force of guaranteeing tail door system. The utility model embodiment sets up the combination structure of limiting structure car body end assembly and limiting structure car door end assembly, through the convex and recessed part mutual coupling and disengaging, not only has reduced the abnormal sound that appears when tail door unlocking, effectively avoided the abnormal sound that caused in the closing process of tail door, effectively promoted the operation comfort of operator.

This utility model provides a temple connection structure and eyeglasses, relating to the field of eyeglasses. It solves the problem that fixing the temples to the frame with screws is prone to loosening and wear, leading to a decrease in fixing force. The temple connection structure includes a receiving shaft, a plug-in shaft, and a rubber gasket. One of the temples and the frame has a single hinge plate fixed to it, while the other has a mating groove. The single hinge plate extends into the mating groove and has a first hole. The rubber gasket is located on one side or opposite sides of the single hinge plate, with a portion of the gasket extending into the first hole. The receiving shaft passes through the groove wall of the mating groove and the first hole. The plug-in shaft is inserted into the receiving shaft with an interference fit, thereby rotatably connecting the temples to the frame. The rubber gasket is clamped between the groove wall of the mating groove and the single hinge plate. The plug-in shaft, inserted into the receiving shaft with an interference fit, forms a solid whole, achieving a hinged connection between the temples and the frame. The rubber gasket provides smooth and uniform damping for opening and closing the temples.

The utility model provides a kind of chain automatic assembly equipment, it is related to chain assembly equipment field, and it includes: equipment main body, the equipment main body lower part front end face is equipped with transparent oil tank and oil conveying mechanism, the oil conveying mechanism includes piston cylinder, the piston cylinder is fixedly connected in the equipment main body lower part front end face by the cooperation of the character of Chinese character of fixed block, the character of Chinese character of fixed block is slidably connected with piston rod, and piston rod right end is provided with the piston in the interior of piston cylinder.The utility model is cooperated by oil conveying mechanism and transparent oil tank, can make the sliding bushing and the guiding slide between the cycle lubrication from top to bottom, avoid lubrication failure and dry friction, and then improve the stability and service life of the chain automatic assembly equipment of the utility model;Solve the problem that the stability and service life of the chain automatic assembly equipment are seriously affected due to the lack of cycle lubrication structure on the guide cylinder, and the lubricating oil is easy to deposit in the bottom of guide cylinder, causes lubrication failure.

The utility model relates to the massage device of massage device driving structure field's electromagnetic drive formula sucking structure, including fixed bolster and electric control massage subassembly, electromagnetic drive source is by the casing and sets up in the coil support and cylindrical magnetic jar of casing inside constitution, the periphery of coil support is wound with the electromagnetic coil, power supply and electromagnetic coil all with main control circuit board electric connection, coil support installs in the inside of magnetic jar along the opening of magnetic jar, and can along the opening direction of magnetic jar telescopic activity, the bottom of coil support is connected with the airbag for being driven by coil support and makes the massage mouth produce negative pressure telescopic activity. When working, coil support telescopic activity along the inside of magnetic jar, thereby drive airbag along the axial direction of magnetic jar and make reciprocating motion, make the inside of sucking mouth form negative pressure, realize the technical effect of noise reduction through non - contact magnetic force drive, can absorb the part high - frequency vibration energy that coil support does linear telescopic motion produces, ensure that can eliminate part mechanical vibration feeling when working.

The utility model provides a novel fireproof antiknock wind pressure resistant sliding door which comprises a door frame metal plate, a fireproof door leaf, a door closing self-locking assembly, automatic bolt mechanisms and a hydraulic mechanism, the door closing self-locking assembly is arranged at the position, corresponding to a self-locking plug, of a side support of the door frame metal plate, and the automatic bolt mechanisms are arranged at the upper position and the lower position in the fireproof door leaf. When the door leaf of the fireproof door is closed, the door closing armature is inserted along the middle of the pair of anti-falling roller columns until the pair of anti-falling roller columns are buckled in the concave part of the rhombic part at the outer end of the self-locking plug, and the fork type hinging arm is dragged by the sliding sleeve through the connecting rod, so that the pair of anti-falling roller columns are kept in a clamping state for the self-locking plug; the tooth end of the bottom end of the anti-disengagement tooth is clamped with the tooth groove of the anti-disengagement ratchet wheel in a matched mode, so that the position of the fork type hinge arm is limited, namely the clamping state of the pair of anti-disengagement roller columns to the self-locking plug is kept, the self-locking plug is prevented from being disengaged from the pair of anti-disengagement roller columns, and the self-locking effect on the fireproof door leaf is achieved.

This utility model relates to the field of dumbbell technology and discloses a dumbbell with shock absorption and noise reduction. Both ends of the dumbbell bar are fixedly connected to mounting heads. Dumbbell plates are movably sleeved on the surface of each mounting head. A fixing nut is threadedly fixed to the surface of the mounting head, and the dumbbell plates are fixedly sleeved on the surface of the mounting head by the fixing nut. Anti-collision rings are fixedly connected to both sides of the dumbbell plate surface. Regularly arranged shock-absorbing components are formed around the perimeter of the dumbbell plate surface. The anti-collision rings and shock-absorbing components are all made of rubber. Shock-absorbing pipes are fixedly sleeved inside the shock-absorbing components on each dumbbell plate. Telescopic rods are fixedly connected to both sides of the shock-absorbing components near the surface of the dumbbell plate, and the telescopic rods are movably sleeved inside the shock-absorbing pipes. The anti-collision rings help to isolate the dumbbell plates when multiple dumbbell plates are mounted on the surface of the mounting head, preventing noise caused by collisions between the dumbbell plates.

The invention provides a board card defect detection method and system based on image processing, and the method comprises the steps: collecting an original image of a to-be-detected board card, and sequentially carrying out the image preprocessing and image detail splitting of the original image, so as to obtain a background image and a detail image; performing first enhancement processing on the background image to obtain an enhanced background image, and performing second enhancement processing on the detail image to obtain an enhanced detail image; fusing the enhanced background image and the enhanced detail image to obtain a target enhanced image; performing iterative enhancement on the depth image based on the original image to obtain an enhanced depth image; the enhanced depth image and the target enhanced image are fused to obtain a final fused image, the final fused image is input into a defect detection model for defect detection, and a board card defect detection result is output, and the problems that in the prior art, detection precision is low, robustness is poor, and three-dimensional defects cannot be detected are effectively solved.

The utility model provides a medical oxygen generator's noise reduction device, the medical oxygen generator's noise reduction device includes Y-type air inlet pipe, Y-type air inlet pipe includes straight pipe portion and Y-type pipe portion, straight pipe portion one end is connected with the second slip pipe of Y-type pipe portion, straight pipe portion one end is equipped with the first slip pipe that connects with the Y-type pipe portion, the first slip pipe is equipped with the second slip pipe, the second slip pipe is equipped with the second slip pipe, and the second slip pipe is equipped with the second slip pipe. The second sliding pipe is sleeved with the first sliding pipe in a sliding mode, a buffering corrugated pipe part is integrally formed on the first clamping ring, and the other end of the buffering corrugated pipe part is connected with the second clamping ring on the straight pipe part. When airflow enters and gathers along the two pipe ends of the Y-shaped pipe part, the second sliding pipe and the first sliding pipe can slide when the airflow gathers and impacts, and the buffering corrugated pipe part can play a role in damping and buffering, so that vibration noise generated by airflow gathering is reduced, and the service life of the air conditioner is prolonged. A plurality of lubricating oil storage annular grooves used for being filled with solid lubricating oil are formed in the inner wall of the first sliding pipe, so that sliding between the first sliding pipe and the second sliding pipe is smoother, and noise generated by sliding is avoided.

The embodiment of the invention relates to the technical field of vehicles, and discloses a living object expelling method and device and a vehicle. The living object expelling method comprises the steps that whether a target living object exists in a vehicle blind area or not is determined based on detection data of the vehicle blind area; wherein the detection data of the vehicle blind area is used for reflecting the existence condition of living things in the vehicle blind area; the vehicle blind area refers to an area outside a driver view area and in a vehicle driving track, and the driver view area refers to a sight coverage area when a driver is in a driving position; under the condition that the target living object exists in the blind area of the vehicle, a target expelling strategy for the target living object is determined based on the living object type of the target living object and the area type of the area where the vehicle is located currently; and controlling the vehicle to execute the target expelling strategy. According to the technical scheme, the living body targets in the driving blind area can be repelled, and safety accidents are reduced.