61results about How to "Improve reflux efficiency" patented technology

The invention discloses a flat type radiating pipe and a manufacturing method thereof. The flat type radiating pipe comprises a tube cavity with two closed ends and a tube wall axially surrounding the tube cavity; the tube cavity and the tube wall are axially provided with an evaporation section, a heat insulation section and a condensation section sequentially; the tube cavity is internally provided with a main capillary structure and an auxiliary capillary structure, wherein the main capillary structure contacts with the tube wall of the evaporation section and extends to the heat insulation section of the tube cavity; the auxiliary capillary structure contacts with the tube walls of the heat insulation section and condensation section; in the heat insulation section of the tube cavity,the auxiliary capillary structure is partially covered by the main capillary structure; and a working medium is filled in the tube cavity enclosed by the main capillary structure and the auxiliary capillary structure. The flat type radiator can be used for solving the ponding problem occurring after the radiating pipe is beaten to be very thin; the capillary force of the flat type radiator is improved, the working medium conveying ability is enhanced, and the backflow efficiency of the working medium is improved; and moreover, the composite capillary structure ensures that the heat transfer performance of the radiating pipe is greatly improved, thus the heat transfer efficiency of the flat type radiating pipe is enhanced.

The invention discloses an oil return structure for a cooling fan. The oil return structure for the cooling fan comprises a base frame, a bearing, a stator, fan blades and a rotor, wherein the bearing, the stator, the fan blades and the rotor are installed on the base frame, an upwards protruding and hollow central pillar is formed in the middle of the base frame, the bearing is installed in the central pillar, a rotation shaft is matched with the bearing so that the fan blades can be arranged on the base frame, an oil return frame and an insulating annular piece are installed on the central pillar of the base frame, a first interval is formed between the central pillar of the base frame and the bearing, a second interval is formed between the bearing and the rotation shaft, the parts, making contact with the fan blades, of the oil return frame, the insulating annular piece and the rotation shaft passing through the first interval and the second interval form a plurality of circulating oil-return flowing passages in a matched and blocking mode, and grease thrown out from the fan blades flows back to the bearing through the oil-return flowing passages. The oil return structure for the cooling fan can basically recycle all the thrown-out lubricating grease through the oil-return flowing passages, enables the lubricating grease to be recycled continuously, is high in backflow efficiency of the lubricating grease, and can effectively reduce noise and frictional force for a long time.

The invention provides a horizontal suspension sludge air-lift backflow method. The method mainly comprises the following steps: sludge is sucked completely and in equilibrium and lifted to a biochemical reaction tank for recycling by arranging a horizontal plane-type air-lift micro-power backflow device in a suspension thick activated sludge layer and utilizing sludge suction pipes of the backflow device, which are horizontally arranged in the vertical and horizontal directions, and a compressed air control device outside the tank adjusts the air volume to control the quantity of backflow. Compared with the conventional sludge backflow method, the horizontal suspension sludge air-lift backflow method provided in the invention has a high backflow efficiency, there is no dead area or dead angle of sludge return in the large-area suspension sludge layer, and the backflow is in equilibrium; and besides, the activated sludge floc structure is not damaged, the control of backflow quantity is flexible, rapid and visual, no moving part or electrical equipment is used under water, and the backflow reliability is extremely high. Furthermore, an aeration blower of a sewage treatment plant is adopted for air supply, the corrected energy consumption for air-lift backflow is extremely low, and the energy-saving effect is obvious.