7results about How to "Reduce use noise" patented technology

The utility model discloses a corner pull basket convenient to use, including main support, the left side installation of main support upper end fixed block, the right side front end of main support is installed with mounting panel, and the upper end fixed mounting of mounting panel has the pulley no.

The fine adjustment type support equipment comprises a top installation plate, a guide connection device is installed at the upper end of the top installation plate, bearing plates are symmetrically installed below the top installation plate, and a left guide block and a right guide block are installed on the outer sides of the bearing plates through guide devices respectively. A left-right fine adjustment device is mounted on the left guide block, and an up-down fine adjustment device is mounted on the right guide block; and the front sides of the left-right fine adjustment device and the up-down fine adjustment device are connected with a mounting base. Therefore, through mutual cooperation of the left-right fine adjustment device and the up-down fine adjustment device, a two-dimensional fine adjustment scheme can be formed, and the mounting and positioning precision of the clamping jaw device is remarkably improved. The sliding rail and the sliding block have a good self-lubricating effect on the premise that the stable combination degree is met. The stop raised head is matched with the elastic buffer rod, redundant impact kinetic energy can be absorbed at the limiting position, impact resonance is avoided, and use noise is reduced.

The invisible fan lamp comprises a circular-truncated-cone-shaped fan base, a fan motor and fan blades are fixed to the top face of the circular-truncated-cone-shaped fan base, and a center light source plate and a circular lampshade are fixed to the bottom face of the circular-truncated-cone-shaped fan base. An annular lifting air guide table is further arranged, and a horn-shaped convex cylinder is integrally formed on the inner wall of the annular lifting air guide table; a lifting driving structure is arranged between the edge of the circular-truncated-cone-shaped fan base and the annular lifting air guide table; the side wall of the horn-shaped protruding cylinder is provided with a lifting receding groove hole. An annular air outlet is formed between the edge of the circular-truncated-cone-shaped fan base and the inner wall of the horn-shaped protruding cylinder. The lifting driving structure drives the circular-truncated-cone-shaped fan base to ascend and descend, and the size of the annular air outlet is changed. The fan is reasonable in structural arrangement, the lifting driving structure drives the circular-truncated-cone-shaped fan base to ascend and descend, the size of the air outlet is adjusted, adjusting operation is convenient and fast, cleaning and maintaining operation is convenient, and the blowing requirements of different air volumes can be met.

The hidden fan lamp comprises a circular-truncated-cone-shaped fan base, a fan motor and fan blades are fixed to the top face of the circular-truncated-cone-shaped fan base, and a center light source plate and a circular lampshade are fixed to the bottom face of the circular-truncated-cone-shaped fan base. An annular lifting air guide table, a mounting seat, a control motor, a transmission screw rod and a sliding block body are further arranged; a horn-shaped protruding cylinder is integrally formed on the inner wall of the annular lifting air guide table, and a lifting receding groove hole is formed in the side wall of the horn-shaped protruding cylinder. An annular air outlet is formed between the edge of the circular-truncated-cone-shaped fan base and the inner wall of the horn-shaped protruding cylinder. The mounting seat is fixed on the annular lifting air guide table, and the sliding block body is fixed on the circular-truncated-cone-shaped fan seat and is in threaded connection with the transmission lead screw. The fan is reasonable in structural arrangement, the motor, the transmission lead screw and the sliding block body are controlled to be matched, the circular-truncated-cone-shaped fan base ascends and descends in the horn-shaped protruding cylinder, the size of an air outlet is adjusted, the overall appearance attractiveness can be improved, and the air blowing requirements of different air volumes are met.

The utility model discloses a kind of electric compressor for vehicle, air conditioning equipment and vehicle, electric compressor for vehicle includes: casing, driving component, orbiting scroll and static scroll, electric control cavity, low pressure cavity and high pressure cavity are equipped in casing, orbiting scroll and static scroll cooperate and jointly define compression cavity, static scroll is equipped with the vent hole being communicated with compression cavity, vent hole is communicated with high pressure cavity, orbiting scroll is adapted to rotate under the drive of crankshaft;Orbiting scroll includes disc body and orbiting scroll blade, orbiting scroll blade is equipped in the first surface of disc body, orbiting scroll blade is equipped with resonance cavity, resonance cavity includes first cavity and second cavity, and the cross-sectional area of first cavity is less than the cross-sectional area of second cavity, the inlet of first cavity is equipped in the inner end portion of orbiting scroll blade to be communicated with vent hole.Electric compressor for vehicle designed according to the utility model sets resonance cavity on orbiting scroll blade, to reduce the pressure pulsation level of discharge gas.

The air pump with the lower noise comprises an upper cover, a lower cover, a cylinder body, a motor installation base and a motor, a fixing screw sequentially penetrates through the upper cover, the lower cover, the cylinder body, the motor installation base and the motor from top to bottom to be fixedly connected, an air inlet cavity and an air outlet cavity are formed in an inner cavity of the upper cover at intervals, and the lower cover extends outwards to be provided with a protruding part. An air inlet nozzle and an air outlet nozzle are arranged on the bottom face of the protruding part, a one-way valve block is further arranged between the upper cover and the lower cover, a rubber cup is installed on the cylinder body, an air inlet cavity and an air outlet cavity penetrate through the one-way valve block to be communicated with an inner cavity of the rubber cup, the bottom of the rubber cup is connected with an eccentric swing frame assembly, and the lower end of the eccentric swing frame assembly is connected with the output end of a motor. The motor is used for driving the eccentric swing frame assembly to extrude the rubber cups for pumping. The utility model has the advantages of simpler and more convenient assembly, lower production and manufacturing cost, lower use noise and longer service life.

The utility model discloses a centrifugal impeller, centrifugal fan and air conditioner, centrifugal fan includes drive motor and centrifugal impeller, and centrifugal impeller includes: middle disc subassembly, main hub, bottom disc, blade and frame, be equipped with the ladder part on main hub, and the ladder part includes: first ladder section, second ladder section and third ladder section, and first ladder section is connected in the outer circumferential side of middle disc subassembly, and second ladder section is connected in the outer circumferential side of first ladder section, and third ladder section is connected in the outer circumferential side of second ladder section, and bottom disc is connected in the outer circumferential side of third ladder section. Since being equipped with first ladder section, second ladder section and third ladder section on main hub, first ladder section, second ladder section and third ladder section are opposite to the outer surface of drive motor and set up, can let centrifugal impeller and the structure arrangement of drive motor be more compact, to let the use performance and service life of drive motor get the promotion, still can reduce the shelter of main hub to the air inlet, promote the air volume, reduce the operating noise.