44results about How to "Take away much" patented technology

The invention relates to a winnowing pan type grain throwing machine. The winnowing pan type grain throwing machine comprises a frame, a grain throwing hood, a throwing motor and an impeller. The impeller is arranged in the grain throwing hood which is arranged on the upper portion of the frame, bearing seats at two ends of the impeller are arranged on the frame respectively, a center shaft of the impeller is connected with an output shaft of the throwing motor through a coupler, and the center shaft, the coupler and the output shaft are coaxial. The grain throwing hood is provided with a feeding port and a discharging port, and blades of the impeller are bent plates. The winnowing pan type grain throwing machine has the advantages of small size, stability of grain throwing paths, low noise, detachability of parts, convenience in installation and maintenance, low cost and flexibility in use.

The invention discloses a double-ultrasonic heat pipe cooling device, which belongs to the technical field of refrigeration and heat exchange. The double ultrasonic heat pipe cooling device includes a heat pipe, and the heat pipe includes a hot end and a condensation end. The heat pipe is provided with a piezoelectric ultrasonic transducer at the hot end and the condensation end respectively, and the piezoelectric ultrasonic transducer is connected between the hot end and the condensation end. Ultrasonic waves of different frequencies are generated at the hot end, the frequency range of the ultrasonic wave at the hot end is 20kHz-40kHz, and the frequency range of the ultrasonic wave at the condensing end is 400kHz-700kHz; the piezoelectric ultrasonic transducer includes piezoelectric ceramics and vibrators connected with piezoelectric ceramics. The invention can promote the flow of liquid and gas in the heat pipe, and improves the heat dissipation efficiency.

The invention provides an evaporation drum of a coating machine and belongs to the technical field of machinery, solving the problem of poor cooling effect of the existing evaporation drum of the coating machine. The evaporation drum of the coating machine comprises an outer cylinder, an inner cylinder and a middle shaft, wherein a first cooling flow channel and a second cooling flow channel are distributed in double helix form in the axial direction of the outer cylinder; the middle shaft penetrates through the outer cylinder and the inner cylinder; the middle shaft is provided with a liquid inlet and a liquid outlet; a first liquid inlet channel and a first liquid outlet channel are formed at the two ends of the first cooling flow channel, respectively; a second liquid inlet channel and a second liquid outlet channel are formed at the two ends of the second cooling flow channel, respectively; the port of the first liquid inlet channel and the port of the second liquid outlet channel are located on the same cross section of the middle shaft; the port of the second liquid inlet channel and the port of the first liquid outlet channel are located on the same cross section of the middle shaft; the first liquid inlet channel and the second liquid inlet channel are communicated with a liquid inlet, respectively; the first liquid outlet channel and the second liquid outlet channel are communicated with a liquid outlet, respectively. The evaporation drum of the coating machine has the advantages that the cooling liquid is evener in distribution, the surface temperature of the evaporation drum is consistent and the coating quality of the plastic thin film is better.

The invention discloses an electric turbocharger. The electric turbocharger comprises a waste gas turbine, a compressor and a motor mounted on the same shaft; the motor is arranged in the middle position between the waste gas turbine and the compressor; the motor comprises a rotor and a stator; the stator is fixedly mounted on an engine body; the rotor is mounted on the shaft; and bearing modulesare mounted on the shaft between the waste gas turbine and the motor and on the shaft between the compressor and the motor. The invention aims to provide the electric turbocharger; and in the electricturbocharger structure, the motor is arranged between the waste gas turbine and the compressor, so that the space utilization rate is increased.

The invention relates to a turbine blade with transverse meandering and alternately shortening and shortening passages inside, including a blade body, a tenon, a base connecting the blade body and the tenon, and a middle blade root. The blade body includes a leading edge, a trailing edge, and a protruding The suction surface and the concave pressure surface, the blade body is equipped with spoiler columns and the meandering channels along the height direction of the blade body and along the direction of the blade chord surrounded by internal ribs, and the meandering channels distributed along the direction of the blade chord are close to the trailing edge There is an overflow hole in the center of the outer wall of the U-shaped bend at the center, an impact hole is opened on the inner rib between the cold air cavity at the leading edge and the winding channel along the height direction of the blade body, and there are splits on the trailing edge outside the blade body and along the height of the blade body. direction and air film holes along the chord direction. The invention can make up for the defect of insufficient external cooling by strengthening the internal heat exchange of the blades, and at the same time make the air film cooling play a good role, so as to meet the higher requirements for cooling brought about by the continuous increase of the working temperature of the turbine.

The invention discloses a resistance box with convenience in air guiding and heat dissipating. The resistance box comprises a hollow box body with an inner cavity; the box body comprises continuous bearing section and accommodating section; the accommodating section is used for placing resistance elements; a fan which blows air towards the accommodating section is arranged in the bearing section; air guiding parts are fixed on the inner wall of the accommodating section; and the air guiding parts are inclined towards the inner cavity of the box body. By virtue of the air guiding parts in the box body, (1) air flow loss is lowered, air flow which flows through the resistance elements is higher in amount, and more heat can be taken away under the effect of the fan of the same powder, so that partial overhigh temperature of the box body can be avoided and the heat dissipation effect is improved; (2) turbulent current is formed between the resistance elements, so that heat generated by the resistance elements can be taken away more easily; and (3) the air guiding parts are directly impacted by the air flow, and the heat on the side wall of the box body can be taken away by the air guiding parts, so that the air guiding parts also can have a thermal insulation effect, thereby lowering the temperature of the side wall of the box body, and reducing heat dissipation from the side surface of the box body.

The invention discloses an electronic chip heat dissipation experiment device based on film evaporation. A cooling working medium is stored in a liquid storage tank, enters a liquid inlet of a film evaporation generator through a piezoelectric micro pump, and reaches a film evaporation chip through a liquid supply channel. The redundant cooling working medium at the film evaporation chip reaches aliquid outlet through a liquid discharge channel of the film evaporation generator, leaves the film evaporation generator and finally reaches the liquid storage tank through a pipeline. Gas directlygenerated by film evaporation at the film evaporation chip reaches a heat exchanger of a temperature control device through a gas outlet, is condensed into liquid, and finally reaches the liquid storage tank. The redundant liquid working medium and the generated gas working medium in the film evaporation generator finally return to the liquid storage tank in a liquid state to finish a cycle. The electronic chip heat dissipation experiment device has the advantages of small occupied area, low power consumption and high heat dissipation capacity, and can meet the heat dissipation requirement that the heat flow density exceeds 1kW / cm<2>.