Ventilation apparatus and method for filter dirt detection
First Claim
1. A ventilation apparatus with filter dirt detection, comprising:
- a main body comprising an air entry and an air exit at two sides of the main body respectively;
a filter behind the air entry for filtering air flowing into the main body via the air entry and the filter;
a fan;
a motor connected to the fan, the motor being configured to operate under different motor rotation speeds such that the fan is caused to rotate;
a motor sensor module connected to the motor, the motor sensor module being configured to sense a current motor rotation speed of the motor and to generate corresponding rotation speed data;
a pressure sensor module between the filter and the air exit, the pressure sensor module being configured to;
sense a static pressure value of the main body before enabling the ventilation apparatus;
sense multiple initial pressure values of the main body respectively corresponding to each of the motor rotation speeds when the ventilation apparatus is just enabled; and
continuously sense a working pressure value of the main body after the ventilation apparatus is enabled; and
an analysis monitor device configured to;
wirelessly receive the static pressure value, the multiple initial pressure values, the working pressure value and the rotation speed data;
calculate multiple reference pressure offset values, based on the static pressure value and the multiple initial pressure values, and respectively corresponding to each of the motor rotation speeds;
calculate a working pressure offset value based on the static pressure and the working pressure;
identify a predetermined pressure offset range based on the rotation speed data;
identify a corresponding one of the multiple reference pressure offset values based on the rotation speed data;
calculate an operating status offset value between the corresponding one of the multiple reference pressure offset values and the working pressure offset value; and
generate a warning message related to the filter if the operating status offset value is within the predetermined pressure offset range.
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Accused Products
Abstract
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.
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Citations
11 Claims
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1. A ventilation apparatus with filter dirt detection, comprising:
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a main body comprising an air entry and an air exit at two sides of the main body respectively; a filter behind the air entry for filtering air flowing into the main body via the air entry and the filter; a fan; a motor connected to the fan, the motor being configured to operate under different motor rotation speeds such that the fan is caused to rotate; a motor sensor module connected to the motor, the motor sensor module being configured to sense a current motor rotation speed of the motor and to generate corresponding rotation speed data; a pressure sensor module between the filter and the air exit, the pressure sensor module being configured to; sense a static pressure value of the main body before enabling the ventilation apparatus; sense multiple initial pressure values of the main body respectively corresponding to each of the motor rotation speeds when the ventilation apparatus is just enabled; and continuously sense a working pressure value of the main body after the ventilation apparatus is enabled; and an analysis monitor device configured to; wirelessly receive the static pressure value, the multiple initial pressure values, the working pressure value and the rotation speed data; calculate multiple reference pressure offset values, based on the static pressure value and the multiple initial pressure values, and respectively corresponding to each of the motor rotation speeds; calculate a working pressure offset value based on the static pressure and the working pressure; identify a predetermined pressure offset range based on the rotation speed data; identify a corresponding one of the multiple reference pressure offset values based on the rotation speed data; calculate an operating status offset value between the corresponding one of the multiple reference pressure offset values and the working pressure offset value; and generate a warning message related to the filter if the operating status offset value is within the predetermined pressure offset range. - View Dependent Claims (2, 3, 4)
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5. A ventilation apparatus with filter dirt detection, comprising:
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a main body with an air entry and an air exit at two sides of the main body respectively; a filter behind the air entry for filtering air flowing into the main body from the air entry and the filter; a fan; a motor connected to the fan, the motor being configured to operate under different motor rotation speeds such that the fan is caused to rotate; a motor sensor module connected to the motor, the motor sensor being configured to sense a current motor rotation speed of the motor and to generate corresponding rotation speed data; and a pressure sensor module between the filter and the air exit, the pressure sensor module being configured to; sense a static pressure value of the main body before the ventilation apparatus is enabled; sense multiple initial pressure values of the main body respectively corresponding to each of the motor rotation speeds when the ventilation apparatus is just enabled; and continuously sense a working pressure value of the main body after the ventilation apparatus is enabled; and an analysis monitor device wirelessly connected to the pressure sensor module, the analysis monitor device being configured to; receive the static pressure value, the multiple initial pressure values, the working pressure value and the rotation speed data; calculate multiple reference pressure offset values respectively corresponding to each of the motor rotation speeds according to the static pressure value and the multiple initial pressure values; calculate a working pressure offset value according to the static pressure value and the working pressure value; obtain a corresponding one of the multiple reference pressure offset values and a corresponding predetermined pressure offset range according to the rotation speed data; and issue a warning message related to the filter based on a determination that an offset value between the obtained corresponding reference pressure offset value and the working pressure offset value falls within the corresponding predetermined pressure offset range. - View Dependent Claims (6, 7, 8)
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9. A method for filter dirt detection method for a ventilation apparatus, the ventilation apparatus comprising a main body, an air entry and an air exit disposed at two sides of the main body respectively, a filter disposed behind the air entry, a pressure sensor module disposed between the filter and the air exit, a fan, a motor sensor module connected to the motor for sensing current motor rotation speed of the motor and generating corresponding rotation speed data, and an analysis monitor device wirelessly connected to the pressure sensor module, the filter dirt detection method comprising:
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a) sensing pressure related data in the main body as multiple initial data when the ventilation apparatus just being enabled, comprising; a1) sensing a static pressure value in the main body before the ventilation apparatus being enabled; and a2) controlling the motor to operate under different motor rotation speeds and controlling the pressure sensor module to sense multiple initial pressures values of the main body respectively corresponding to each of the motor rotation speeds when the ventilation apparatus just being enabled, wherein the multiple initial data respectively comprise the static pressure value and one of the multiple initial pressure values; b) wirelessly transmitting the multiple initial data to the analysis monitor device; c) the analysis monitor device respectively calculating multiple reference pressure offset values respectively corresponding to each of the motor rotation speeds according to the multiple initial data after the step b); d) the pressure sensor module continuously sensing pressure related data in the main body as working data after the ventilation apparatus is enabled; e) wirelessly transmitting the working data to the analysis monitor device; f) the analysis monitor device calculating a working pressure offset value according to the working data after the step e); g) obtaining a corresponding one of the multiple reference pressure offset values and a corresponding predetermined pressure offset range according to the rotation speed data; and h) the analysis monitor device determining whether to issue a warning message relate to the filter according to whether an offset value between the obtained corresponding reference pressure offset value and the working pressure offset value falls within the predetermined pressure offset range. - View Dependent Claims (10, 11)
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Specification