Ionizer

Patent metadata

Field	Value
Publication number	US-2016249441-A1
Application number	US-201615013198-A
Country	US
Kind code	A1
Filing date	Feb 2, 2016
Priority date	Feb 20, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

An electrode unit formed by mounting a discharge electrode in a first housing, and a power supply control unit formed by locating a high voltage generation circuit that outputs a pulsating high voltage to the electrode unit in a second housing are electrically connected via a shielded cable, and a capacitor is connected to a ground line electrically connecting between a shield layer of the shielded cable and the ground.

First claim

1 . An ionizer comprising an electrode unit including a discharge electrode, a power supply controller that outputs a pulsating high voltage to the electrode unit, and a cable that electrically connects the electrode unit and the power supply controller,
wherein the electrode unit is formed by mounting the discharge electrode in a first housing separated from the power supply controller so as to be installed with a spacing from the power supply controller, the cable is a shielded cable including an electric wire formed of a conductor, an insulating layer formed of an insulating material surrounding the electric wire, and a shield layer formed of a conductor surrounding the insulating layer, and a capacitor is connected between the shield layer and ground.

2 . The ionizer according to claim 1 , wherein the capacitor has a smaller electrostatic capacitance than an electrostatic capacitance between the electric wire and the shield layer in the cable.

3 . The ionizer according to claim 1 , wherein the power supply controller alternately outputs a positive and negative pulsating high voltage successively.

4 . The ionizer according to claim 3 , wherein the power supply controller includes a high voltage generation circuit that boosts an oscillating voltage from an oscillation power source thereby converting into a positive and negative DC voltage, and alternately switches the positive and negative DC voltage successively to output the DC voltage to the electrode unit.

5 . The ionizer according to claim 4 , wherein the electrode unit includes a first discharge electrode and a second discharge electrode,
the high voltage generation circuit alternately and successively switches between a voltage of a first polarity pattern in which a positive DC voltage is outputted to the first discharge electrode and a negative DC voltage is applied to the second discharge electrode, and a voltage of a second polarity pattern in which the negative DC voltage is applied to the first discharge electrode and the positive DC voltage is applied to the second discharge electrode, when outputting the voltage to the electrode unit.

6 . The ionizer according to claim 1 , wherein the capacitor is provided in the cable.

7 . The ionizer according to claim 1 , wherein the high voltage generation circuit is accommodated in a second housing, and the capacitor is located in the second housing.

8 . The ionizer according to claim 1 , further comprising a discharge resistance for discharging an electric charge on the shield layer to the ground, connected parallel to the capacitor.

Assignees

• Smc Corp

Inventors

• Hariya Tomokazu
• Toshida Takayuki

Classifications

• H01T19/04

  having pointed electrodes · CPC title

• H01T23/00 Primary

  Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere · CPC title

• H05F3/06 Primary

  by means of ionising radiation · CPC title