Scroll filter and automatic control method thereof

Abstract

The invention discloses a scroll filter and an automatic control method thereof. The scroll filter comprises a driving scroll for installing a scroll motor and a driven scroll for installing filtering cotton, and the scroll filter also comprises a support, wherein the filtering cotton is drawn out from the driven scroll and then is wound onto the driving scroll after passing through the support, the support is provided with a rolling rod, magnetic steel of a hall sensor is installed on the rolling rod, a probe of the hall sensor which is installed on the rolling rod is fixed on the support, and the scroll filter also comprises a controller, an output signal of the hall sensor is transmitted to the controller to be used as a control signal of the controller for controlling the scroll motor. The pressure difference on two side surfaces of the filtering cotton is used as a condition for starting the scroll motor, a sensing count of the hall sensor is used as a condition for stopping the scroll motor, so that whether the filtering cotton is clogged and can be normally used or not can be reversed, the sensing count of the hall sensor is used as a condition for judging a replacement length, so that the filtering cotton can be prevented from being half replaced or incompletely replaced.

Description

technical field [0001] The invention relates to a filter in the field of air filtration, in particular to a scroll filter and an automatic control method thereof. Background technique [0002] With the popularization and application of the fresh air system, especially under the environmental conditions of the computer room, it is necessary to install a filter device for the air intake system of the fresh air system, because special occasions such as computer rooms, base stations, and hospitals require air cleanliness to meet certain requirements. Install a filter device on the air inlet. If the filter device uses a low-grade filter material, the filtration efficiency will be too low to meet the environmental requirements; The air intake requires frequent replacement of the filter material. Most of the plate filters and bag filters used in the fresh air system now use aluminum alloy frames. This kind of filter generally needs to be replaced once every 1 to 2 months, which is ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a reel filter and its automatic control method, which solves the inaccurate replacement time of the current filter cotton, and at the same time, the length of the replacement is affected by the thickness of the filter cotton and the reel during the process of replacing the used filter cotton. The problem of excessive replacement or incomplete replacement caused by the influence of the diameter change of the filter, to achieve the purpose of accurately controlling the replacement length of the filter cotton

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