Control system and control method

Patent metadata

Field	Value
Publication number	US-2024219060-A1
Application number	US-202418602862-A
Country	US
Kind code	A1
Filing date	Mar 12, 2024
Priority date	Sep 29, 2020
Publication date	Jul 4, 2024
Grant date	—

Abstract

A control system includes a storage unit, an acquisition unit, a determination unit, a control unit, and a blowing unit. The storage unit stores a second reference capture efficiency obtained by correcting a first reference capture efficiency for first microscopic particles to a reference capture efficiency for second microscopic particles. The acquisition unit is configured to acquire a capture efficiency of a filter for the second microscopic particles. The determination unit is configured to perform a determination process of determining whether the capture efficiency acquired by the acquisition unit is smaller than the second reference capture efficiency. The control unit is configured to control operation of the blowing unit based on a result of the determination process. The first microscopic particles are used to measure a capture efficiency of the filter in a reference standard, and the second microscopic particles are present around the filter installed in an actual environment.

First claim

1 . A control system comprising:
a storage unit configured to store a second reference capture efficiency, the second reference efficiency being a value obtained by correcting a first reference capture efficiency indicating a predetermined capture efficiency for first microscopic particles to a reference capture efficiency for second microscopic particles and setting the reference capture efficiency as the second reference capture efficiency; an acquisition unit configured to acquire information indicating a capture efficiency of a filter for the second microscopic particles; a determination unit configured to perform a determination process of determining whether the capture efficiency acquired by the acquisition unit is smaller than the second reference capture efficiency; a control unit; and a blowing unit electrically connected to the control unit and configured to blow air to the filter in response to a command signal received from the control unit, the control unit controlling operation of the blowing unit based on a result of the determination process, the first microscopic particles being microscopic particles used to measure a capture efficiency of the filter in a reference standard, and the second microscopic particles being microscopic particles in an atmosphere present around the filter installed in an actual environment.

2 . The control system of claim 1 , further comprising:
an input unit configured to receive input of the first reference capture efficiency; and a correction unit configured to correct the first reference capture efficiency to the second reference capture efficiency based on correction data, the correction data including correlation information indicating a correlation between the first reference capture efficiency and the second reference capture efficiency.

3 . The control system of claim 1 , wherein
upon determining that the microscopic particle capture efficiency is smaller than the second reference capture efficiency, the control unit controls the blowing unit to increase a volume of air blown to the filter.

4 . The control system of claim 3 , wherein
the control unit controls the blowing unit to increase the volume of air blown to the filter by increasing a rotational speed of a motor of the blowing unit.

5 . A control system comprising:
a storage unit configured to store a second reference capture efficiency, the second reference capture efficiency being a value obtained by correcting a first reference capture efficiency indicating a predetermined capture efficiency for first microscopic particles to a reference capture efficiency for second microscopic particles and setting the reference capture efficiency as the second reference capture efficiency; an acquisition unit configured to acquire information indicating a capture efficiency of a filter for the second microscopic particles; a determination unit configured to perform a determination process of determining whether the capture efficiency acquired by the acquisition unit is smaller than the second reference capture efficiency; a notification unit configured perform at least one of emitting a sound or displaying information; a control unit configured to control the notification unit to emit the sound and/or display predetermined information to indicate that the filter should be replaced when the determination unit determines that the microscopic particle capture efficiency is smaller than the second reference capture efficiency.

6 . A control method comprising:
correcting a first reference capture efficiency indicating a predetermined capture efficiency for first microscopic particles to obtain a reference capture efficiency for second microscopic particles and setting the reference capture efficiency as a second reference capture efficiency; acquiring information indicating a capture efficiency of a filter for the second microscopic particles; performing a determination process of determining whether the capture efficiency of the filter is smaller than the second reference capture efficiency; blowing air to the filter using a blowing unit; and controlling operation of the blowing unit based on a result of the determination process.

7 . The control method of claim 6 , wherein
the controlling the operation of the blowing unit includes controlling the blowing unit to increase a volume of air blown to the filter when the microscopic particle capture efficiency is smaller than the second reference capture efficiency.

8 . The control method of claim 7 , wherein
the controlling the blowing unit to increase the volume of air blown to the filter includes increasing a rotational speed of a motor of the blowing unit.

Assignees

• Daikin Ind Ltd

Inventors

• Arakawa Takeshi
• Sasai Yuta
• Tanaka Toshio
• Kuroi Kiyoshi
• Hara Satoshi

Classifications

• F24F11/39

  Monitoring filter performance · CPC title

• F24F11/52

  Indication arrangements, e.g. displays · CPC title

• F24F11/89

  Arrangement or mounting of control or safety devices · CPC title

• F24F11/77 Primary

  by controlling the speed of ventilators · CPC title

• F24F13/28 Primary

  Arrangement or mounting of filters · CPC title