Ion generating apparatus and judgment method for presence or absence of ions
AssigneeSharp Kabushiki Kaisha
InventorMasafumi Nishino
Life of this patent
Estimating the term…
Abstract
A measuring part 67 measures the potential of a collecting electrode 66 having collected positive and negative ions respectively generated by ion generating parts 61 of ion generators 6a and 6b and ion generating parts 62 of ion generators 6c and 6d. In the judgment of the presence or absence of ions, the ion generators 6a and 6b and the ion generators 6c and 6d are alternately turned ON/OFF. In ion judgment 1, ON/OFF is performed 6 times with a period of 10 seconds. In ion judgment 2, ON/OFF is performed 10 times with a period of 1 second. Then, when the difference (the amount of change) between the maximum value and the minimum value of the output voltage of the measuring part 67 is greater than a given threshold value, the presence of ions is concluded respectively.
Claims12
An ion generating apparatus in which a plurality of ion generators generate positive and negative ions, comprising:
- a drive circuit turning ON/OFF the ion generators;
- an ion detector detecting an index indicating a state of generation of the ions generated by the ion generators;
- and
- a judgment part judging presence or absence of the ions on the basis of the index detected by the ion detector, wherein
- in a case that the drive circuit turns ON one ion generator and the other ion generator periodically at different timings, when a difference of the indices detected by the ions detector is greater than a given threshold value, the judgment part concludes presence of the ions.
A judgment method for presence or absence of ions of judging presence or absence of ions, comprising:
- turning ON/OFF a plurality of ion generators so as to generate positive and negative ions;
- detecting through an ion detector an index indicating a state of generation of the ions generated by the ion generators;
- and
- in a case that the ion generators respectively generating positive and negative ions are turned ON periodically at different timings, when a difference of the indices detected by the ions detector is greater than a given threshold value, concluding presence of the ions.
Dependencies are inferred from the claim text.