3results about How to "Guaranteed air intake efficiency" patented technology

The flow detection device comprises a shell, an airflow channel is arranged in the shell, and an air resistance structure is arranged in the airflow channel so that the airflow channel can be divided into an air inlet section located on one side of the air resistance structure and an air outlet section located on the other side of the air resistance structure. The air resistance structure is at least provided with a ventilation grid part in the middle area of the airflow channel, the shell is provided with a detection opening corresponding to the air inlet section and provided with a detection pipe extending into the air outlet section corresponding to the air outlet section, and the tail end of the detection pipe extends to the ventilation grid part to detect airflow passing through the ventilation grid part. The ventilation grating part is separated to form a plurality of airflow passing ports arranged in an array mode, airflow can be divided into a plurality of strands to pass through when passing through, the stability of the flow state of the airflow can be guaranteed, and the airflow can pass through the detection pipe in the air outlet section in a laminar flow state. The detection pipe can cross a viscous area close to the channel wall to directly detect the airflow in the central area of the airflow channel.

This utility model provides a fan assembly and a range hood. The fan assembly includes a fan and a bracket assembly. The fan has a volute and an external rotor motor. The volute forms a mounting cavity, and the external rotor motor is at least partially located within the mounting cavity. The bracket assembly has a first bracket and a second bracket, which are staggered and overlapped. The first bracket has a first mating part, and the second bracket has a second mating part. The volute has an air inlet side, and the ends of both the first and second brackets are connected to the air inlet side. One end of the central shaft of the external rotor motor passes through the first and second mating parts sequentially to connect to the bracket assembly. This effectively improves the robustness and reliability of the connection between the external rotor motor and the volute. Furthermore, the simple structure of the bracket assembly effectively ensures the air intake efficiency of the external rotor motor. Moreover, the assembly process of the bracket assembly is simple, effectively improving the convenience and efficiency of fan assembly.

The present application relates to the technical field of transformer, and discloses a dustproof photovoltaic box-type transformer, which comprises a box body, a V-shaped photovoltaic panel is arranged on the top of the box body, a transformer body is arranged on the inner side of the box body, a wind shield is further arranged on the inner side of the box body, a fan is arranged on the inner side of the wind shield, an air outlet is arranged on the side of the box body away from the wind shield, and an air inlet is arranged on the same side of the box body and the wind shield. The dustproof photovoltaic box-type transformer is driven to work by the dust scraping assembly and the deep cleaning assembly in cooperation with the cylindrical dustproof cylinder. Under normal circumstances, the second spring pushes the dust scraping plate to adhere to the outer wall of the dustproof cylinder, so that the surface accumulated dust can be scraped in real time; the motor driven reciprocating screw rod driven by photovoltaic power drives the bristles to reciprocate up and down, and the dust inside the mesh is deeply cleaned. Meanwhile, the disassembly assembly can quickly disassemble and clean the bristles, so that the problems of easy blockage and difficult cleaning of the traditional dustproof net are solved, and the air inlet and heat dissipation efficiency of the box body are continuously guaranteed.