Fan filter unit with fixed surface air speed and controllable area

Abstract

The invention relates to a fan filter unit with fixed surface air speed and controllable area. The fan filter unit comprises a device casing, the bottom of the device casing is provided with an air outlet, the top of the device casing is provided with a circular air suction port, a fan is arranged below the circular air suction port, a filter is arranged below the fan, and an air speed sensor is arranged at the center below the filter and is connected with a controller through a lead, wherein the controller is arranged on the top of the device casing and used for controlling rotation speed of the fan. The fan filter unit breaks through the conventional method of controlling air quantity by changing air speed via area fixing type, senses and monitors the air speed of the air outlet by means of the sensor and timely feeds the air speed back to the controller, and the controller can immediately transmits signals to enable rotary shafts on two sides of a box to rotate in or out to adjust the area of a windward side, so that air quantity can be changed, air speed can be stabilized, and airflow distribution can be constant.

Description

technical field [0001] The invention relates to the field of air purification, in particular to a fan filter unit with a fixed surface wind speed and a controllable area. Background technique [0002] With the development of the economy and the improvement of people's living standards, people's requirements for product quality are getting higher and higher. Reasonable control of various technical indicators of the production environment to meet the requirements of special production processes has become one of the current research hotspots in clean engineering. As a kind of purification equipment, FFU has been widely used in clean rooms due to its long working time, low noise, maintenance-free, small vibration, stepless speed regulation, uniform wind speed, convenient installation, and modular connection. , Dust-free operating table, dust-free production line, assembled clean room and local 100-level applications. However, due to the high standards and strict requirements ...

AI Technical Summary

Problems solved by technology

For computer control, because clean workshops do not allow FFU motors to have brushes, therefore, FFU motors use brushless DC motors, and the commutation problem is solved by electronic commutators, and the short life of electronic commutators makes the whole control The service life of the system is also greatly reduced

The whole system is expensive

High post-maintenance costs

The remote control is similar to the computer control, which has the disadvantages of short life and high cost.

So is there a control method that can not only achieve low energy consumption, convenient control, but also ensure service life and low cost? This has of course become another major problem and challenge in the field of science and technology today.

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