Method for determining remaining time for cleaning filter screen, air supply equipment and control method thereof

Abstract

The invention provides a method for determining remaining time of cleaning a filter screen in air feeding equipment. The air feeding equipment comprises the filter screen and an air feeding fan; and the filter screen is arranged on an air flue of the air feeding fan. The method comprises the following steps of regulating the rotation speed of the air feeding fan according to a current change condition of the air feeding fan, and enabling air quantity output of the air feeding equipment to be constant; and determining remaining time of cleaning the filter screen according to the rotation speed increase rate of the air feeding fan. The method provided by the invention can be used for detecting filth blockage degree of the filter screen in real time, so that remaining time is determined; and moreover, the rotation speed of the fan can be increased according to the filth blockage degree of the filter screen to ensure constant air quantity output by the system, and therefore, a comfortable environment is provided for a user. The invention further provides a control method for the air feeding equipment and the air feeding equipment.

Description

Technical field [0001] The invention relates to the technical field of air supply equipment, in particular to a method for determining the remaining time for cleaning a filter screen. The invention also relates to a control method of the air supply device and the air supply device. Background technique [0002] In order to improve the comfort of the indoor environment, various air supply equipment such as air conditioners, fresh air fans, and air purifiers have been widely used. One of the common features of this type of air supply equipment is that they all include an air supply fan and a filter set on the upstream side of the air supply fan. Among them, these devices have the problem of dirty filters after working for a period of time. In the prior art, except for some products, many products do not have a reminder function to instruct the cleaning of the filter. Users can only roughly grasp the time for cleaning the filter by themselves, which can easily cause serious cloggi...

AI Technical Summary

Problems solved by technology

In the existing technology, except for some products, many of them do not have a reminder function to indicate to clean the filter screen. Users can only roughly grasp the time to clean the filter screen by themselves, which can easily cause the problem that the filter screen is seriously dirty and clogged, which affects the air supply effect.

[0003] Taking the air conditioner as an example, in the prior art, even if the model has a reminder function to indicate to clean the filter screen, the factors on which the reminder cleaning is based are often only the preset use time, and cannot be determined according to the actual filter screen dirty degree. Make a judgment, which is also due to the technical difficulty in automatically judging the degree of filter blockage

[0004] At the same time, in the prior art, these devices cannot adjust the air volume according to the degree of filter blockage. Therefore, as the filter screen becomes increasingly dirty, the air volume is gradually reduced, which increases the static pressure of the equipment, or even completely prevents air output. , or cause the device to run abnormally, affecting the user's comfortable experience

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