5results about How to "Reduce internal resistance" patented technology

The mobile air conditioner comprises a shell, a horizontal partition plate is arranged in the shell and divides the shell into an upper cavity and a lower cavity, a first volute assembly made of heat preservation materials is arranged in the upper cavity, a first volute cavity is formed in the first volute assembly, an evaporator is arranged at the air inlet end of the first volute cavity, and a second volute assembly made of heat preservation materials is arranged at the air outlet end of the first volute cavity. The air outlet of the first volute cavity faces upwards; a second volute assembly is arranged in the lower cavity, a second volute cavity is formed in the second volute assembly, a condenser is arranged at the air inlet end of the second volute cavity, and the air inlet end of the second volute cavity and the air inlet end of the first volute cavity are located on different faces of the shell. The mobile air conditioner with the heat preservation air cavity is compact in structure, convenient and rapid to assemble, high in precision, low in working noise and power consumption, large in air outlet amount, long in air supply distance and good in heat dissipation performance, continuous and stable refrigeration of the mobile air conditioner is guaranteed, and the using effect is good.

The invention belongs to the technical field of micro electro mechanical system manufacturing and ocean current energy collection, and particularly relates to a dual-drive ultra-low-speed ocean current energy harvesting device which solves the problems that an existing ocean current energy collecting device is large in overall size, more depends on other forms of ocean energy such as wave energy, cannot collect low-frequency and low-speed ocean current energy in a compatible mode, and is poor in energy efficiency. The energy harvesting device comprises an internal energy harvesting structure, an external energy harvesting structure, a barrel-shaped shell and a top cover, the internal energy harvesting structure comprises a bevel gear wheel, a left bevel pinion, a right bevel pinion, a conductive slip ring, a left copper ring, a right copper ring and a semiconductor wafer; the external energy harvesting structure comprises a left turbine blade, a right turbine blade and a bottom turbine blade. Direct current is generated through friction between the conductive copper ring and the semiconductor, resistance in the friction process can be remarkably reduced, the output power density is improved, and high reliability and long endurance are achieved. The two turbine blades are adopted to adapt to different flow velocity changes, and the flexibility of energy collection is improved.

The invention provides a mesoporous carbon material as well as a preparation method and application thereof. The mesoporous carbon material has a multi-stage pore structure, the multi-stage pore structure comprises macropores with the pore diameter larger than thousands of 50 nm, mesopores with the pore diameter of 2-50 nm and micropores with the pore diameter smaller than thousands of 2 nm, and the macropores, the mesopores and the micropores are communicated with one another to form a three-dimensional network structure; the mesopores and the micropores are distributed on the pore walls of the macropores, the mesopores accounting for more than 70% of the total number of the mesopores are distributed in a first area of the mesoporous carbon material, the micropores accounting for more than 80% of the total number of the micropores are distributed in a second area of the mesoporous carbon material, and the first area wraps the second area. The mesoporous carbon material provided by the invention is beneficial to thousand rapid ion transmission, has good conductivity and energy storage capacity, and is suitable for being applied to the fields of thousand secondary batteries, catalysts or adsorbents.

The utility model provides a kind of bicycle hub and bicycle, it is related to bicycle technical field, including axle core and the shell and tower base of being sleeved on axle core, wherein shell and tower base are formed with the installation cavity for assembling ratchet structure between, ratchet structure includes first ratchet piece, second ratchet piece and elastic piece, first ratchet piece and second ratchet piece are all sleeved on axle core, first limiting portion for being limited with first ratchet piece along the circumference is shaped in shell, second limiting portion for being limited with second ratchet piece along the circumference is shaped in tower base, elastic piece is located in the other side of second ratchet piece relative to first ratchet piece, to make first ratchet piece limit along the axial direction, second ratchet piece can reciprocate along the axial direction, so that the second helical tooth on the end face of second ratchet piece and the first helical tooth on the end face of first ratchet piece can be one-way engagement. To improve the problem that existing bicycle hub structure is easy to wear and tear and the number of parts is more.

The invention discloses pneumatic driving type fireproof glue solution vacuum defoaming quantitative filling equipment, and relates to the technical field of fireproof glue solution filling, the pneumatic driving type fireproof glue solution vacuum defoaming quantitative filling equipment comprises a tank body, the top of the tank body is movably connected with a tank cover, the upper portion of the left side of the tank body is fixedly connected with a vacuumizing connector, and the pneumatic driving type fireproof glue solution vacuum defoaming quantitative filling equipment further comprises filling assemblies arranged on the right side and the bottom of the tank body; the filling assembly comprises an air pressure injection connector fixedly connected to the top of the right side of the tank body, a pressure gauge is fixedly connected to the right end of the air pressure injection connector, a filling connector is fixedly connected to the bottom of the tank body, an electromagnetic valve is movably connected to the exterior of the filling connector, and a weighing device is arranged at the bottom of the tank body; bubbles in the fireproof glue solution in the tank body are completely removed in a vacuumizing mode, the weight reduction amount of the tank body is detected through weight induction, the weight reduction amount of the tank body is the weight of the fireproof glue solution injected into the fireproof glass cavity, and the injection amount can be accurately controlled.