1178 results about "Supersonic waves" patented technology

The invention relates to a method for preparing endogenetic particle reinforced metal matrix composites under the coupling effect of a magnetic field and supersonic waves. The method comprises: adjusting the temperature of a metal matrix fused mass to the reaction initial temperature after refining, adding a reactant which can generate a particle phase with the fused mass through the reaction in situ for implementing the synthesis reaction, standing the mixture after the reaction is over, and cooling the mixture to the pouring temperature for pouring; and the method is characterized in that: the magnetic field and the high-intensity ultrasonic field are simultaneously exerted in the reaction synthesis process to realize the synthesis of endogenetic particle reinforced metal matrix composites under the coupling effect of the magnetic field and the high-intensity ultrasonic field. The magnetic field can be an intense pulse magnetic field, a high frequency oscillation magnetic field or a low frequency alternating magnetic field. In the method, the coupling effect of the magnetic field and the ultrasonic field makes the particle sizes be thinned and dispersed evenly; the ultrasonic vibration agitation and electromagnetic stirring functions improve the composite dynamic condition, and the compounding of the particle phase and a base metal interface is better; and the co-action of magnetochemistry and sonochemistry improves the thermodynamic condition of the reaction in situ, as well as speeding up the reaction in situ and controlling the growth of the particle phase.

A washing machine has a partial washing apparatus fitted on an outer surface of a main unit having a washing tub housed therein. The partial washing apparatus is movable between an use position and a non-use position. When the partial washing apparatus is in the use position, its washing portion faces a laundry entrance from outside the main unit; when the partial washing apparatus is in the non-use position, its washing portion is retracted from the position in which it faces the laundry entrance. The washing portion achieves washing by using supersonic waves generated by a supersonic vibration device. The laundry entrance is covered with a lid composed of a front lid and a rear lid coupled together so as to be foldable in two. The rear lid has a gate opening formed therein to let the partial washing apparatus pass through. The gate opening is partially or completely closed by a tray for sustaining a piece of laundry. The tray has a drain outlet formed in its bottom surface, and the drain outlet is open toward or communicates with a drain path leading to outside the washing machine. When the partial washing apparatus is in the non-use position, the tray rotates together with the rear lid.

The invention provides an ultrasonic inspection device which can simplify the mechanical constitution by fixing the ultrasonic array probe to a rotating shaft in a predetermined degree, and electrically controls the ultrasonic beam in a manner that the ultrasonic transmitting and receiving direction is approximately vertical to the breast surface, and collects the data of the entire region containing C' section of the breast only by turning the probe. In addition, the membrane between the probe and the breast has a reticulation constitution thereby reducing multiple reflections. Further, the invention can get correct diagnosis in short time by displaying B mode image and C mode image simultaneously.

In the conventional cleaning robot, by mainly using each supersonic waves sensor having a sensing range as +-30 DEG in consideration of an appropriate sensitivity, when four supersonic waves sensors are installed at a cleaner main body, a sensing range as 240 DEG is obtained, and accordingly it is impossible to observe surroundings of the cleaner thoroughly. In order to solve the above-mentioned problem, a position information recognition apparatus for a cleaning robot in accordance with the present invention includes a fixed plate installed at a cleaner main body; a main motor fixedly installed at the fixed plate in order to generate a rotational force; a rotational cylinder combined with a rotational axis of the main motor so as to be rotated at a certain angle; and plural position information sensors installed at the rotational cylinder at a certain angle in order to sense surroundings. By installing several supersonic waves sensors performable left / right rotation at regular intervals, observation region can be greatly increased, and accordingly it is possible to improve efficiency by eliminating unnecessary rotational motion of the cleaner main body in position recognition and distance compensation.