45results about How to "Avoid air turbulence" patented technology

A magnetic head supporting apparatus includes a magnetic head for reading and writing information on a magnetic disc, a slider having the magnetic head, and a suspension for supporting the slider. An IC chip for controlling a signal of the magnetic head is mounted on a first surface of a heat insulating substrate, and a second surface of the heat insulating substrate opposite to the first surface thereof is mounted to the suspension.

The invention relates to a multi-beam deformation detecting device which comprises a probe, a digital signal processor DSP, a personal computer PC, a laser group and a prism reflection target, wherein the prism reflection target is arranged on a point to be tested, the probe and the laser group are arranged on a measuring point, a laser beam group emitted from the laser group is reflected through the prism reflection target by adjusting the laser group and then forms an overlapped light spot on the probe, a barycenter of the overlapped light spot is determined by utilizing a photoelectronic tracing macro pixel iteration barycenter method, and the deformation of the point to be tested is further determined through the barycenter offset distance. The invention can effectively avoid the influences on environmental change, air turbulence and stray light, can realize long-term online monitoring, and has accurate measurement data, high detection precision, simple structure, low cost and convenient operation.

The subject matter of the invention is a tractor unit with a double axle trailer (2), a connecting joint being provided between the trailer (2) and the tractor unit (1), said connecting joint being adapted to be readily releasably coupled to and uncoupled from the tractor unit (1) and a connection (10), which is surrounded by a bellows (11), being provided between tractor unit (1) and trailer (2).

A case that is used for an electronic or electric device has an opening portion arranged at a vicinity of a fan motor that generates airflow inside and outside the case. The opening portion has a protection portion for preventing a finger or other matters from entering the fan motor. The protection portion includes a first rib group extending linearly in a lateral direction, a second rib group extending linearly in a second direction vertical direction. Each of the ribs has an inclined surface that is along a direction of the airflow exhausted from the fan motor and faces the inside or the outside of the opening portion.

Provided is a recording apparatus including: a recording unit for performing recording on a recordable medium; a transportation unit for transporting the recordable medium; and a drier for accelerating the drying of the recordable medium by ejecting gas to the recordable medium, wherein the drier is configured such that the ejection range of the gas in a direction perpendicular to the transportation direction of the recordable medium is changeable.

A compressor rotor for a turbomachine including at least two disks on a common axis carrying blades and connected together by a tubular wall, forming a surface of revolution, and a centripetal air bleed mechanism including air passages passing through the tubular wall, together with a wall extending along the tubular wall from the through passages up to one of the disks to channel the air stream inside the tubular wall.

The invention relates to the technical field of concrete construction, in particular to a jet device, a spray head assembly and a concrete jet vehicle. The jet device comprises a jet nozzle and a mixing device connected with the jet nozzle, and a clamping device for tightly clamping the jet nozzle is arranged at the position where the mixing device is connected with the jet nozzle. The mixing device comprises a casing pipe and a mixer, and a cavity is formed between the casing pipe and the mixer. A ventilation pipe is connected to the casing pipe. The spray head assembly comprises a driving device and the jet device, the driving device is connected with the outer wall of the mixing device on the jet device, and the driving device comprises a swinging device and a brushing device. The brushing device comprises a first hanging bracket and a second hanging bracket, the first hanging bracket is connected with the swinging device, and the second hanging bracket is connected with the outer wall of the mixing device through a connection part. The concrete jet vehicle comprises the spray head assembly. The technical problems that a spray head in the prior art is prone to cracking, and theservice life is short are solved.

A speaker system includes a main speaker and a subordinate speaker arranged around the main speaker. A pseudo-spherical wave is generated around the main speaker as a whole such that both speakers are vibrated in the frequency range of piston vibration and are in phase and that the propagation speed of a sound wave produced by the vibration of the subordinate speaker is preferably lower than the propagation speed of a sound wave produced by the vibration of the main speaker.

The invention provides an air stream collecting device, which comprises an air stream collecting channel with a large outer orifice and a small inner orifice, wherein the channel wall of the air stream collecting channel at least comprises a movable part; and when the wind power exceeds a preset value, the movable part is compressed to release a part of air stream surpassing the preset value. The invention further discloses a wind motor and a wind energy collecting device using the air stream collecting device. Due to the adoption of the invention, the potential safety hazard on equipment caused by blast air such as typhoon or strong wind and the like can be eliminated effectively.

The invention is applicable to the field of household electric appliances, and discloses a machine base assembly and an electromagnetic heating food processor. The machine base assembly comprises a machine base shell, a control panel arranged outside the machine base shell, a main control circuit board arranged inside the machine base shell, a wire coil, an electromagnetic compatible board, and amotor, wherein the inside of the machine base shell is divided into a first heat dissipation air duct and a second heat dissipation air duct which are mutually isolated; the main control circuit board, the wire coil and the electromagnetic compatible board are all arranged inside the first heat dissipation air duct; the motor is arranged inside the second heat dissipation air duct. According to the machine base assembly provided by the invention, two completely independent heat dissipation air ducts which are not crossed with each other are formed in the machine base shell in a separated mode,the main control circuit board, the wire coil and the electromagnetic compatible board are arranged in one of the heat dissipation air ducts, and the motor is arranged in the other heat dissipation air duct, so that on one hand, the two heat dissipation air ducts can independently exchange heat with external cold air to improve the heat dissipation effect of a product, and on the other hand, phenomena of airflow disorder and loud airflow noise in the machine base assembly can be prevented.

The invention provides a dust removal fan. The dust removal fan comprises a shell, an impeller, a motor and a flow guide cap. The shell is a cylinder, and an air inlet and an air outlet are formed inthe two axial ends of the shell respectively. The motor is fixed in the shell. The impeller is located in the shell and is in drive connection with the motor. The impeller comprises a front disc, a rear disc and blades. The outer contour of the front disc and the outer contour of the rear disc are each in a circular truncated cone shape, wherein the outer contour of the front disc and the outer contour of the rear disc are gradually shrunk towards the air inlet, and the axis of the front disc and the axis of the rear disc coincide with the axis of the shell. The two axial ends of the front disc and the two axial ends of the rear disc are the large circular end and the small circular end respectively. The outer contour of the flow guide cap is in a spherical segment shape with a central angle less than 180 degrees. The area of the bottom circle of the flow guide cap is greater than that of the small circular end. The bottom circular end of the flow guide cap is fixedly connected to thesmall circular end, the axis of the bottom circular end of the flow guide cap coincides with the axis of the rear disc, and the flow guide cap is gradually shrunk towards the air inlet. According to the dust removal fan, airflow entering the impeller can be guided, the phenomenon of vortexes or airflow turbulence is avoided, and therefore the power consumption of the dust removal fan is reduced.