3results about How to "Efficient work" patented technology

This utility model relates to the technical field of charging pile auxiliary equipment, and in particular to an auxiliary device for flood control and drainage slope at the bottom of a charging pile. It includes a base, with a first symmetrical drainage channel at the bottom, a second symmetrical drainage channel in the middle, and third drainage channels on both the left and right sides. All three drainage channels are inclined. This utility model introduces a three-stage drainage channel structure, combined with drainage channels, to form a three-dimensional drainage network from top to bottom. This network can operate effectively under different rainfall intensities. Each drainage channel functions sequentially according to actual needs, guiding rainwater out step by step. This utility model replaces the cement base of the charging pile, fixing it to the foundation with bolts. The charging pile is then installed and fixed on two sets of this device. The easy assembly and disassembly design significantly shortens installation time, allowing the charging pile to be put into use in a shorter time, greatly improving the efficiency of infrastructure construction.

A mixed-flow ventilation fan includes a base plate and a panel that snaps onto it. An exhaust pipe is connected to the rear of the base plate. An air inlet is provided on the panel, communicating with the exhaust pipe on the base plate. A motor mount is connected to the inner wall of the exhaust pipe via several guide vanes. The motor mount is fixed to the central axis of the exhaust pipe by the guide vanes. A drive motor is installed inside the motor mount, and a front fan blade is mounted on the main shaft of the drive motor. The front fan blade rotates inside the exhaust pipe, drawing in air from the air inlet and expelling it from the rear of the exhaust pipe. The beneficial effects of this invention are: the front fan blade is a mixed-flow fan blade, and combined with an optimized number of blades and a reasonable design of the inclination angle, curvature, and angle of attack of the inner and outer edges of the blades, the blades can efficiently perform work on the air during rotation, generating excellent airflow characteristics that balance large air volume and high air pressure.

This invention discloses an axial flow fan assembly and its control method. The axial flow fan assembly includes a fan shroud, fan blades disposed within the fan shroud, a fan motor driving the fan blades to rotate, and a pressure balancing device. The pressure balancing device includes a housing, a piston, and a pressure balancing motor. Both the housing and the pressure balancing motor are detachably fixed to the outer wall of the fan shroud. The piston is slidably disposed within the housing, dividing the inner cavity of the housing into a first chamber and a second chamber. Both ends of the first and second chambers have openings facing away from each other, with the openings of the first and second chambers respectively facing the fan blades. The pressure balancing motor is driven by the piston, driving the piston to move along the length of the housing within the inner cavity. The pressure balancing device can balance the high and low air pressures generated on the surface of the fan blades during rotation. Therefore, this axial flow fan assembly has the advantage of good noise reduction performance.