VENTILATION APPARATUS AND METHOD FOR FILTER DIRT DETECTION

摘要

A ventilation apparatus includes a main body, an air entry and an air exit respectively arranged on two sides of the main body, a filter arranged behind the air entry, and a pressure sensor module located between the filter and the air exit, which senses pressure caused by air flowing inside the main body through the air entry and the filter. The pressure sensor module firstly senses pressure related data when the apparatus begins to start for initial data, and senses pressure related data continuously after the apparatus starts for working data, and transmits these data externally. An analysis monitor device computes a reference pressure offset value and a working pressure offset value according to the initial data and the working data, and compares the two pressure offset values for determining whether the filter needs to be replaced.

主权项

1. A ventilation apparatus with filter dirt detection, comprising:
a main body comprising an air entry and an air exit disposed at two sides of the main body respectively; a filter disposed behind the air entry for filtering air flowing into the main body via the air entry and the filter; a pressure sensor module disposed between the filter and the air exit for sensing a static pressure value of the main body before enabling the ventilation apparatus, for sensing an initial pressure value of the main body when just enabling the ventilation apparatus, and for continuously sensing a working pressure value of the main body after the ventilation apparatus being enabled, and wirelessly transmitting the static pressure value, the initial pressure value and the working pressure value externally; wherein the static pressure value and the initial pressure value are used for calculating a reference pressure offset value, the static pressure and the working pressure are used for calculating a working pressure offset value, and the reference pressure offset value and the working pressure offset value are used for determining whether to issue a warning message related to the filter.