30results about How to "Reduce the dissipation rate" patented technology

A mold for injection molding and an injection molding device / method with surface quality improvement ability are disclosed, in which the injection molding device comprises: a mold including a first mold piece and a second mold piece; and a film feeder. In an exemplary embodiment, the second mold piece is configured with a suction unit in a manner that the film feeder is enabled to provide a film to the suction unit.

The invention discloses an automatic directional transmission wireless charging device. The wireless charging device comprises a base, and the upper part of the base is provided with a sliding board which is movable in the transverse direction. A first end sidewall of the sliding board in the length direction is provided with a first fixing chamber. The first end of the upper surface of the sliding board in the width direction is provided with a first lamp tube. The second end of the upper surface of the sliding board in the width direction is provided with a photosensitive detecting board. The automatic directional transmission wireless charging device further comprises the components of a plurality of single-axis moving mechanisms, wherein the first end sidewall of the single-axis movingmechanism in the length direction is provided with a second fixing chamber; a transmitting coil; a light-penetrable board; two telescopic driving mechanisms which are separately arranged in a lineardriving mechanism, wherein the telescoping end of the first telescopic driving mechanism selectively extends into the first fixing chamber, and the telescoping end of the second telescopic driving mechanism selectively extends into the second fixing chamber; and a controller which is connected with the lamp tube, the photosensitive sensing board, the driver, the linear driving mechanism and the telescopic driving mechanism. The automatic directional transmission wireless charging device settles a technical problem of easy dislocation between a transmitting coil and a receiving coil in the wireless charging device.

The invention relates to the technical field of kitchen appliances, in particular to a range hood and a control method thereof. The range hood comprises a lampblack collecting hood, a main oil screen and a lampblack guide plate, wherein at least part of the main oil screen is hollowed out to form a lampblack passing channel, and the main oil screen is movably connected with the lampblack collecting hood; the lampblack guide plate is of a plate-shaped structure, and the lampblack guide plate is movably connected with the main oil screen; when the main oil screen is in an initial state, the main oil screen is attached to the top surface of the lampblack collecting hood; when the main oil screen is in a working state, the main oil screen and the top surface of the lampblack collecting hood are arranged at an angle; when the lampblack guide plate is in the initial state, the main oil screen is covered; and when the lampblack guide plate is in the working state, the lampblack guide plate and the main oil screen are arranged at an angle. According to the range hood, when the main oil screen is in the working state, the main oil screen and the top surface of the lampblack collecting hood are arranged at an angle, so that the lampblack filtering effect can be improved compared with a mode that a main oil screen is parallel to the top surface of a lampblack collecting hood, and the main oil screen is configured to be in an inclined state so that the sliding speed of oil on the main oil screen can be increased.

Disclosed is a multivariable predictive control method for an air separation device. The multivariate predictive control method comprises the steps that (a) an upper computer is additionally arranged on a DCS system local area network of the air separation device for creating an MVPC server of the air separation device; (b) variables are determined, specifically, according to the technological process optimizing target of the air separation device, the controlled variable (CV), the manipulating variable (MV) and the disturbance variable (DV) are determined; (c) the establishment principles of the size of an MVPC matrix are that key parameters are selected, the variables are controlled as less as possible, the valve opening degree, namely corresponding to the output of a PID controller under conventional control, is adjusted through the MV of an MVPC, when the MVPC works, the PID controller corresponding to the MV of the MVPC is in cascade control, the output of the PID controller tracks the MV of the MVPC, and when the MVPC does not work, the PID controller corresponding to the MV of the MVPC is in automatic control, and the MV of the MVPC tracks the output of the PID controller; (d) a model is built, specifically, an MVPC controller model is built in the air separation device, or independent MVPC controller models are built in different work sections in the air separation device; (e) the models are trained and adjusted, specifically, the gain K, the time constant Tau and the delay time Tdelay in the models are preliminarily set, and after the models are put into use, the optimized gain, time constant and delay time are provided by a system automatically; and (f) the models are put into use.

The invention provides a dish-shaped underwater gliding robot, which relates to an underwater detection robot, and solves the problems of poor hydrodynamic performance, high energy consumption and poor cruising ability of two underwater detection robots. The dish-shaped underwater gliding robot comprises a main casing, wherein the main casing is in a water drop shape; the main casing mainly consists of an upper half cabin and a lower half cabin in sealed butt joint; the longitudinal section of the main casing uses an NACA airfoil profile; an ascending and sinking adjustment mechanism used for controlling the ascending and sinking of the robot is arranged in the upper half cabin; an electromagnetic propulsion system used for controlling the navigation of the robot, an alternating current module used for providing a power source for the electromagnetic propulsion system, an attitude adjustment mechanism used for controlling the attitude of the robot and a gravity center adjustment mechanism used for controlling the glider tail inclination are arranged in the lower half cabin; a main control module used for controlling the attitude adjustment mechanism, the gravity center adjustment mechanism and the ascending and sinking adjustment mechanism is also arranged in the upper half cabin; a battery pack for transmitting electricity to the alternating current module and the main control module is also arranged in the lower half cabin. The dish-shaped underwater gliding robot is used for underwater navigation detection.