100results about How to "Reduce use noise" patented technology

The invention discloses a dust-removing air purifier with double functions of anion sedimentation and high-voltage electrostatic adsorption. The dust-removing air purifier comprises a casing as well as an anion emission needle plate, a stacked high-voltage electrostatic cell, a positive pole filtering body and a fan which are sequentially arranged, wherein anion emission needles which discharge towards the positive pole filtering body and form potential difference with the positive pole filtering body are arranged on the anion emission needle plate, the stacked high-voltage electrostatic cell comprises negative plates and positive plates, an air channel is formed between each negative plate and the adjacent positive plate, each negative plate comprises two insulators with high resistance and high voltage resistance and a conductor which is located between the two insulators and has low resistance, and the positive plates have electrical conductivity and can lead out charges carried by electronegative particles directly contacted with the positive plates in the air channels. According to the dust-removing air purifier, the wind resistance is low, the use noise is small, frequent cleaning is not required, single air purification efficiency is high, bacteria and viruses in air can be killed, the problems about wall blackening and influence on human health are solved, and secondary pollution caused by starting up is avoided.

The invention discloses an intelligent air purifier with multiple filtering layers. The intelligent air purifier comprises a purifier box body and a remote controller. The intelligent air purifier is characterized in that a display panel, a control panel, an air inlet, an air outlet and an induction region are arranged/formed on/in the purifier box body; a wind shield is arranged at the air inlet; an air inlet gap is formed between the wind shield and the air inlet; a hollow purifying chamber is formed in the purifier box body; filtering layers, a negative-ion generator, an ultraviolet lamp and a fan are arranged in the purifying chamber; the filtering layers sequentially comprise a filter screen made of aluminum alloy, a cold-accelerant filter screen, a filter screen made of honeycomb activated carbon, an antibacterial filter screen, and an HEPA high-efficiency filter screen from outside to inside; a plurality of mounting screws, a power-line hole, a drainage hole and a water storage tank are arranged/formed on/in a rear side plate of the purifier box body. The intelligent air purifier disclosed by the invention has the benefits that the air purifier has low noise, can rapidly respond to smoke, is low in energy consumption, and the high in purifying efficiency, the high in the concentration of negative ions released by the air purifier.

The invention discloses a belt pulley powder metallurgy formulation. The belt pulley powder metallurgy formulation is composed of the following ingredients (mass percentage): 0.3-0.7% of graphite, 1.5-2.5% of copper powder, 0.6-1.0% of zinc stearate, 0.1-0.3% of sulphur, 0.3-1.5% of nickel powder, 0.3-1.0% of molybdenum powder, and the rest is iron powder; the invention further discloses a process for preparing the belt pulley powder metallurgy formulation. The process comprises the following steps of mixing materials, pressing, sintering, cooling, shaping, removing oil, blasting sands, and blackening. In the formulation and the method, the formulation is reasonable, the belt pulley is proper in hardness, the process is simplified, the production efficiency is high and the production cost is low.

The invention relates to a split type exhaust hood. Compared with the prior art, the split type exhaust hood solves the defects of high using noise and low reliability. The split type exhaust hood comprises a draught fan (2), a draught fan power supply control box (7), a smoke vent (4), a public flue (9) and an exhaust hood body (1), wherein a switch panel (20) and a main air chamber (3) are arranged on the exhaust hood body (1), the smoke vent (4) and the main air chamber (3) are connected, the draught fan (2) is arranged between the public flue (9) and the smoke vent (4), and the draught fan (2) is connected with the switch panel (20) by the draught fan power supply control box (7). The split type exhaust hood can reduce the using noise and prolong the service life.

The invention provides a fan module used for a server on the one hand. The fan module comprises a fan backboard (2) and at least one fan bracket (1), wherein each fan bracket (1) is detachably connected with the fan backboard (2) and provided with at least one fan groove (4), the fan brackets (1) and the fan backboard (2) are arranged in a spaced mode, and each fan groove (4) contains a fan module body (3). The invention further provides a server with the fan module on the other hand. The fan module used for the server and the server are provided for at least achieving the effect that vibration generated in the using process of the fan module is reduced.

The invention relates to a lock body component of a door lock, and in particular provides a silent buffer spring bolt structure. The technical scheme adopted by the invention is as follows: a liner plate, a latch bolt, a bottom box, a sliding block, a dial peach and a buffer block are arranged on the silent buffer spring bolt structure; a rubber gasket is fixedly embedded in front of a tail pin at the tail end of the latch bolt; the latch bolt extends into the bottom box, and the rear part of the latch bolt presses against a reset spring; a buffer cavity is formed in the middle of the bottom box and the buffer block can be embedded in the cavity; a box cover is buckled with the bottom box, the sliding block is embedded in the bottom box, an embedding cavity is formed on the inner side of the front end of the bottom box to embed the tail pin and the rubber gasket at the tail end of the latch bolt, a guide column is arranged on one side of the outer wall at the front end of the bottom box and is embedded with a guide straight groove in the middle of the box cover, and a buffer column is arranged on the other side of the outer wall to match with the buffer block embedded in the bottom box and is embedded into a buffer bent groove formed in the buffer block; and when the latch bolt returns, the latch bolt is influenced by the resistance of the buffer bent groove in the buffer block, and slows down at the tail end of the stroke. Therefore, the silent buffer spring bolt structure disclosed by the invention realizes functions of slow and stable restoration of the latch bolt, and achieves a technical effect of reducing door lock using noise.

The invention discloses a multimedia hard disk destroying device. The multimedia hard disk destroying device comprises a device body, wherein a feeding hole is formed in the top of the device body and a discharging hole is formed in the bottom of the device body; a crushing mechanism is arranged in the device body; the crushing mechanism comprises a cutting crushing device; the cutting crushing device comprises a main case and a driving motor II; a cutting mechanism is arranged in the main case; the crushing mechanism further comprises a paired roller extrusion device; the paired roller extrusion device comprises an extrusion space which is formed between two mutually-parallel paired roller cutters and used for extruding a hard disk and a driving motor I which is used for driving the paired roller cutters; the extrusion space is located under the feeding hole; the outlet of the extrusion space is engaged with the inlet of the crushing mechanism and an extruded hard disk is conveyed into the crushing mechanism; and the outlet of the crushing mechanism are engaged with the discharging hole so that the crushed hard disk is conveyed out of the device body. The multimedia hard disk destroying device has the advantages of better hard disk destroying effect, lower use noise, higher crushing efficiency and the like.

The invention discloses an intelligent oxygen generator. The intelligent oxygen generator comprises a main control panel, a blood oxygen detection module and an oil-free compressor, and the blood oxygen detection module and the oil-free compressor are connected with the main control panel respectively; the blood oxygen detection module is used for detecting the blood oxygen concentration of a target user, generating electric signals corresponding to the detected blood oxygen concentration, and sending the electric signals to the main control panel; the main control panel is used for generatingrotation speed adjustment signals corresponding to the electric signals; the oil-free compressor is used for adjusting the rotation speed of a motor according to the rotation speed adjustment signals. According to the intelligent oxygen generator, the rotation speed of the motor of the oil-free compressor in the oxygen generator is adjusted according to the detected blood oxygen concentration ofthe target user, accordingly, the oxygen outlet amount is adjusted, and the aims that energy is saved and using noise of the oxygen generator is lowered are achieved.

The invention discloses a hawthorn fruit drying device with a charging machine. The hawthorn fruit drying device comprises a drying room, the charging machine, a plurality of heat transforming systemsand a conveying device, wherein the charging machine is arranged outside the drying room; the heat transforming systems are arranged in parallel above the drying room; the conveying device is positioned in the drying room; a material inlet is formed at the top of one end of the drying room, and a material outlet is arranged at the bottom of the drying room; the charging machine comprises a conveying part arranged at the bottom of one side of the material inlet of the drying room, a lifting part positioned at the end part of the inner side of the conveying part and a pushing part positioned atthe outer side of the lifting part; and the conveying device comprises a support frame, lifting mechanisms symmetrically arranged at both ends of the support frame, and a plurality of conveying mechanisms arranged in parallel on the support frame. The hawthorn fruit drying device with the charging machine has simple structure, energy conservation, environment friendliness, high drying efficiencyand good quality of hawthorn fruits, uniformity of operation in a transport process and no noise pollution, and can realize continuous transfer among transfer devices of different height.

The invention discloses an automatic blanking and code-printing device for multiple cigarette sample inspection items. The automatic sample blanking and code-printing device is characterized in that a blanking and code-printing mechanism consists of a left hopper, a right hopper, a left roller, a right roller, a code spraying roller, a photoelectric detector, a code spraying nozzle and a blanking slideway, wherein the left hopper and the right hopper are used for accommodating cigarette samples; the left roller and the right roller are positioned at the lower part of the left hopper and the right hopper; and the blanking slideway is arranged at the lower part of the code spraying roller. The automatic sample blanking and code-printing device has the advantages that the automatic blanking and code-printing of the samples are realized, so that the human errors are avoided, the labour intensity and the working noise is reduced, and the working efficiency is improved. Compared with the prior art, the equipment has a reasonable and compact structure and is small in size, so that the device can be used for three-point inspection of cigarettes, and also can be used for contrast and sequencing inspection of multiple kinds of cigarettes; and therefore, the device is wide in application range, and high in blanking and code-printing efficiency.

The invention belongs to the technical field of five-star foot supporting seat structures, and especially relates to a connecting structure for assembling a five-star foot pedestal and a supporting foot. The connecting structure comprises a connecting block arranged between the five-star foot pedestal and the supporting foot and used for connecting, assembling and reducing use noises, a pedestal clamping portion arranged on five-star foot pedestal and used for being in clamping connection with the connecting block, and a supporting foot clamping portion arranged on the supporting foot and used for being in clamping connection with the connecting block. The connecting block is arranged between the five-star foot pedestal and the supporting foot to increase the connecting strength. The connecting structure for assembling the five-star foot pedestal and the supporting foot has the advantages of simplicity, effectiveness, convenience in dismounting and mounting, large use strength after connecting and assembling, and small use noises.

The invention provides an electric door and window guide rail with a magnetic levitation linkage function, and belongs to the field of an electric guide rail for doors and windows. The electric door and window guide rail comprises a motion block, a fixed part, a linear motor driving device, a linkage component and pulleys, wherein the fixed part is resting relatively to a mobile part; the motion block moves in an empty slot of an outer frame guide rail in the fixed part, and the linear motor driving device is arranged on the outer side of the fixed part; the pulleys are fixedly arranged on thetwo sides of the motion block and are in clearance fit to slide in the empty slot of the fixed part; and the linkage component is connected with a driving motion block and a driven motion block of atrack, and thus one motor can drive two doors and windows for linkage moving. The electric door and window guide rail has the advantages of simple structure, easiness in maintenance and high practicality and prevents the fixed part from deforming and linking. Meanwhile, the electric door and window guide rail does not need transmission equipment during electrical moving, so that friction is small,and noise is low.

The multi-layer composite filter for the return air system of the vehicle air conditioner disclosed by the present invention comprises a HEPA filter core, a conductive fiber layer, a high dielectric coefficient nonwoven fabric, an insulating outer frame, a DC power supply module, a transformer, an antibacterial nonwoven fabric, and activated carbon Layer and electret melt-blown non-woven fabric, the HEPA filter element is bonded from top to bottom by antibacterial non-woven fabric, activated carbon layer and electret melt-blown non-woven fabric, installed in the insulating outer frame, the The high dielectric constant non-woven fabric is arranged between two conductive fiber layers, the conductive fiber layer is fixedly connected with the insulating outer frame, and the conductive fiber layer is connected to the DC power supply module through the transformer, and the DC power supply module is connected to the power supply in the vehicle. . The present invention adds electric treatment and filtration to the traditional HEPA filter layer, so that particles of 0.1 μm to 0.3 μm that cannot be filtered in the traditional technology can be filtered, and can realize the function of low energy consumption and high-efficiency filtration of the vehicle air conditioner filter.

The invention discloses a low-noise axial flow fan. The low-noise axial flow fan comprises a shell, a fixing frame installed on the shell, a driving motor installed on the fixing frame and a wind wheel installed on a rotating shaft of the driving motor, a rotating drum is rotationally connected to the interior of the shell, the rotating drum is located between the wind wheel and the shell, the rotating drum extends to an air inlet from an air outlet of the shell. a plurality of follow-up blades used for driving the rotating drum and the wind wheel to rotate in the same direction are arranged on the inner wall of the rotating drum, the follow-up blades are spirally arranged and located between an impeller and the air outlet of the shell; and at least four blades are arranged on the wind wheel, arc-shaped bent turbulent flow parts are arranged at the blade tips of the blades, and the bending angle of each turbulent flow part is 1 to 3 degrees. According to the low-noise axial flow fan, the rotating drum, a silencing cavity, a sound absorption structure and a specific blade structure are arranged, so that the use noise is low.

The invention provides a plasma degerming assembly and a refrigerator. The plasma degerming assembly comprises a discharging electrode which is arranged on a box inner container of the refrigerator and used for performing discharging ionization processing on air inside the box inner container. According to the technical scheme, high-frequency discharge is achieved through tiny power consumption to modify chemical energy of molecules of harmful gases inside the refrigerator, then the molecules of the harmful gases are decomposed into elementary substance atoms or harmless molecules, removal aiming at some harmful gas is not required, removal is performed on a large amount of harmful gases indistinguishably, vital signs of a large amount of molecules are broken during the discharging process aiming at the harmful bacteria, the harmful bacteria are quickly killed, and convenience of user operation is guaranteed during the integral degerming process.

The invention discloses a damper and a water purifier with the same. The damper comprises a shell, a damping block is arranged in the shell in the water flowing direction, and an elastic piece is connected with the end, close to a water outlet, of the damping block. The damping block moves between a first position and a second position under the common effect of pressure of water and elastic force of the elastic piece. In the process that the damping block moves to the second position from the first position, the water discharging amount in the water outlet in the upper portion of the shell is reduced evenly. The water purifier is provided with the damper. When the flow of water entering the damper from a booster pump fluctuates, the damping block in the damper moves vertically in the water flowing direction under the effect of water pressure and the spring, the gap between the damping block and a transition section of the shell changes, and therefore it is ensured that the water outlet amount of the water outlet of the damper is kept stable, vibration of the water purifier in the use process is reduced to a certain extent, the use noise is lowered, and user satisfaction is improved.

The invention discloses a control method and a system of an air conditioner indoor unit. The fan rotating speed is acquired, the rotating speed of a driving motor is determined according to the rotating speed of a fan; a rotating speed control signal is generated according to the rotating speed of the driving motor, and used for controlling the driving motor to rotate; the rotating speed of the driving motor is reduced along with the increase of the rotating speed of the fan, so that the use noise of a whole air conditioner is reduced; and the problem that the noise of the air conditioner is large when the fan of an existing air conditioner indoor unit operates at high rotating speed is solved, and the use experience of the user is improved.

The invention provides a gas inflow method for a gas water heater. The method is characterized in that a gas inflow channel is additionally arranged on a gas inlet of the strong-extracting or strong-blowing type gas water heater, the gas inflow channel is used for preventing noise in the gas water heater from being transmitted outside, and the use noise of the gas water heater is lowered in the aspect of noise transmission. The invention further provides the gas water heater based on the gas inflow method. The gas water heater is of a strong-extracting or strong-blowing type structure, and the gas inlet is formed in the back face or the side face or the top face of a shell of the gas water heater. The gas water heater is characterized in that a gas inflow cover is installed on the gas inlet, an air inlet is formed in the gas inflow cover, a silencing baffle is installed in the gas inflow cover, and external air flows into the gas inflow cover through the air inlet and then flows tortuously along the silencing baffle to the gas inlet.

The invention discloses a side sucking type range hood which comprises a shell and a smoke guide plate arranged on the front side of the shell. The shell is provided with a main wind inlet. Smoke sucking openings are formed between the smoke guide plate and the shell. The smoke sucking openings communicate with the main wind inlet. The range hood is characterized in that the two smoke sucking openings are located on the left side and the right side of the smoke guide plate correspondingly, the smoke sucking openings incline forwards gradually from bottom to top, and meanwhile, the smoke sucking openings are oblique openings gradually inclining toward the middle from bottom to top. The smoke sucking openings are formed in the two sides, the openings are obliquely opened in the opening direction, the soot dispersing principle is conformed, and compared with transverse openings, the capture effect of the range hood to the soot dispersed to the two sides is better.