Recent Patents on Mechanical Engineering - Volume 11, Issue 3, 2018

Background: The pneumatic conveying system has some advantages such as simple structure, easy loading and unloading, and low environmental pollution, but there are also problems such as pipe wear, blockage and limitation of the transmission distance. Objective: To relieve pipe blockage, reduce in-pipe dust and remove in-pipe blockage, this paper introduces three recent patents of pneumatic conveying systems and meth Read More

A qualitative observation has been undergone to review the various geometries of a microchannel that has been reported for the last two decades in literature majorly for the application of high power devices. Recent research on microchannel is more focused on numerical and experimental work with various configurations of the heat sink. In this paper, a comparative work on different flow geometries used in the microchann Read More

Background: A novel micro wedge-platform thrust slider bearing with a small wedge angle registered in the patent is introduced. This bearing depends on the physical adsorption and is applied in special cases with a pronounced load-carrying capacity. Objective: To show the newly developed micro wedge-platform thrust slider bearing with a small wedge angle by the physical adsorption technology. Methods: The fu Read More

Background: An abnormal micro/nano step bearing with the film thickness in the inlet zone lower than that in the outlet zone registered in the patent is introduced based on the physical adsorption technology. This bearing does not follow conventional hydrodynamic lubrication principles. Objective: To introduce an abnormal-geometry micro step bearing for application in special cases. Methods: The operation of the mentio Read More

Background: Various relevant papers and patents which have reported non-circular gears are widely used in many types of mechanical instruments. The Pascal limacon gear is one new type of noncircular gear. Many researchers have only focused on the design of Pascal limacon gears and their applications. Little attention has been paid to the machining aspects. Shaping is a better method for fabricating non-circ Read More

Background: When an unbalanced flexible rotor passes through its critical speed, it is very easy to result in great vibration amplitude, even the destruction of rotor and bearings. Therefore, it is significant for high-speed rotating machines to reduce the vibration amplitude of flexible rotor. Various patents have been discussed in this article. Objective: The purpose of this study is to find out the amplitude reduction method an Read More

Background: Large centrifugal fans with high efficiency are being developed fast recently, reflecting the trends that saving energy is becoming more and more important. Objective: The purpose of this study is to explore the design method of efficient impeller, and to form the design ideas and concepts, this can provide reference for the enterprises to design efficient impeller in the future, and improve enterprises' producti Read More

Background: According to the characteristics of engine cooling system, a BLDC (Brushless direct current motor) modeling method based on the electronic water pump is proposed. In the MATLAB/ Simulink environment, according to the different functions of the motor body module, the driver module, and the control module, we can build each independent module, and then let them make an organic integration, so we can buil Read More