WO2007052589A1

WO2007052589A1 - Dc ionizer

Info

Publication number: WO2007052589A1
Application number: PCT/JP2006/321629
Authority: WO
Inventors: Hidetomo Ohtsuki; Hirotaka Nakajima; Tohru Hosoda; Yasunori Terasaki; Fumitaka Irie; Takanobu Yamaguchi
Original assignee: Hugle Electronics Inc.
Priority date: 2005-10-31
Filing date: 2006-10-30
Publication date: 2007-05-10
Also published as: JP2007123166A; KR20080071123A; TWI319645B; CN101278451A; CN101278451B; TW200803097A

Abstract

[PROBLEMS] To provide a DC ionizer capable of maintaining a constant amount of ions produced for a long period of time. [MEANS FOR SOLVING PROBLEMS] A DC ionizer which blows ionized air containing positive and negative ions toward an object to be neutralized by means of a fan. The DC ionizer comprises an ion balance sensor (14) for detecting the ion balance of the positive and negative ions, an amount-of-ions sensor (15) for detecting the amount of negative ions, and control means for controlling the negative voltage applied to a negative electrode (12N) according to the output signal from the amount-of-ions sensor (15) to control the amount of negative ions so as to be approximately constant and controlling the voltage applied to a positive electrode (12P) according to the output signal from the ion balance sensor (14) to control the ion balance of the positive and negative ions so as to keep the balance.

Description

Specification

DC ionizer

Technical field

TECHNICAL FIELD [0001] The present invention relates to a DC ionizer that generates positive and negative ions by applying positive and negative DC voltages to positive and negative electrodes and blows ionized air containing these positive and negative ions toward an object to be discharged. Specifically, the present invention relates to a DC ionizer that maintains the ion balance of positive and negative ions with high accuracy and maintains the amount of generated ions almost constant over a long period of time.

Background art

[0002] With this type of DC ionizer, the ion balance of positive and negative ions supplied to the object to be removed is maintained! /, And the object to be removed is charged positively or negatively. Various methods are provided to maintain the service.

At the same time, dust and dirt adhere to the positive and negative discharge electrodes with long-term use, and the amount of generated ions gradually decreases and the static elimination performance deteriorates.Therefore, improvements have been made to suppress this reduction in static elimination performance. RU

[0003] For example, in Patent Document 1 to be described later, on either the positive or negative discharge electrode side, the discharge current is detected and the high voltage generation circuit on one pole is fed back so that the discharge current is constant. Discharge current to be controlled Z voltage control means is provided, and on the other discharge electrode side, the ion current is detected by the ion detector, and the positive and negative ion currents are balanced in the high voltage generation circuit of the other pole. Thus, a control device for a DC static eliminator provided with an ionic current Z voltage control means for feedback control and a control method using this control device are described.

[0004] Also, in Patent Document 2, positive and negative ion detection electrodes are respectively arranged corresponding to positive and negative discharge electrodes, and as an initial setting, the ion currents detected by the detection electrodes are equal, and After adjusting the sensitivity so that the potential of the charged plate becomes 0, the ion balance is maintained by controlling the applied voltage of positive, negative, or bipolar according to the set voltage of the ion balance variable volume. The amount of positive or negative ions due to contamination of the discharge electrode A method for controlling a DC static eliminator is described in which the applied voltage is controlled so as to compensate for the decrease when it decreases.

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-68497 ([0027] to [0039], FIGS. 6 to 8 etc.)

Patent Document 2: Japanese Patent No. 3572541 ([0008] to [0038], FIG. 1, etc.)

Disclosure of the invention

Problems to be solved by the invention

However, each of the above-described conventional techniques has the following problems.

In the prior art described in Patent Document 1, attention is paid to the fact that the discharge current with respect to the same applied voltage decreases due to contamination of the discharge electrode. For example, the discharge current on the positive electrode side is detected by a discharge current detection resistor. Feed back to the current control circuit and control the voltage applied to the positive electrode so that the discharge current is constant, and keep the amount of ions generated constant! /. However, it is detected by the discharge current detection resistor. Since the discharge current is very small and the error is large, it is difficult to keep the amount of generated ions constant by feedback control.

[0007] In addition, in the conventional technique described in Patent Document 2, it is necessary to arrange positive and negative ion detection electrodes corresponding to positive and negative discharge electrodes, respectively, so that many parts are required and ion balance is required. The control is actually generated and is not based on feedback of positive / negative ion balance, but based on the voltage applied to each electrode and the voltage set by the ion balance variable volume. Unless the voltage and the amount of ions generated are accurately proportional, it is difficult to perform highly accurate ion balance control.

[0008] Therefore, a problem to be solved by the present invention is to provide a DC ionizer that maintains ion generation amount substantially constant for a long period of time and enables ion balance control with high accuracy.

Means for solving the problem

[0009] In order to solve the above-mentioned problem, the invention according to claim 1 applies positive DC voltage to the positive electrode to generate positive ions, and applies negative DC voltage to the negative electrode. Negative ions are generated, and ionized air containing these positive and negative ions is supplied to the object to be discharged by a fan. In a direct current ionizer that blows air toward

An ion balance sensor that detects the ion balance of positive and negative ions;

An ion amount sensor for detecting the amount of positive ions or negative ions;

Based on the output signal of the ion quantity sensor, the voltage applied to the polar electrode detected by the ion quantity sensor is controlled to control the ion quantity of the polarity to be substantially constant, and the ion quantity sensor And control means for controlling the voltage applied to the electrode having the opposite polarity to the polarity based on the output signal of the balance sensor so as to maintain the ion balance of positive and negative ions.

[0010] The invention according to claim 2 is the invention according to claim 1, wherein the positive DC voltage applied to the positive electrode is controlled in order to maintain the ion balance of positive and negative ions, and the negative amount is maintained in order to keep the ion amount substantially constant. The negative DC voltage applied to the side electrode is controlled.

[0011] The invention according to claim 3 is as described in claim 1 or 2,

As the ion balance sensor, a conductive protection member disposed in front of the fan is used, and the ion balance is detected from the current flowing through the protection member.

[0012] The invention according to claim 4 is any one of claims 1 to 3,

The amount of ions is detected from the current flowing through the ion amount sensor.

[0013] The invention according to claim 5 is any one of claims 1 to 4,

Based on the output of the ion amount sensor, a taring display for prompting cleaning of the electrode is performed.

[0014] The invention according to claim 6 is any one of claims 1 to 4,

Based on the voltage applied to the electrode, a tiling display for promoting cleaning of the electrode is performed.

[0015] The invention according to claim 7 is to display an alarm when the cleaning display continues for a certain time or more in claim 5 or 6.

The invention's effect

[0016] According to the present invention, even when the amount of generated ions decreases due to electrode contamination, etc., either positive or negative voltage is controlled according to the output signal of the ion amount sensor, and at the same time, the output signal of the ion balance sensor is used. By controlling the other voltage accordingly, the amount of ion generation is almost reduced. The ion balance of positive and negative ions can be maintained while maintaining constant.

In particular, the amount of generated ions is controlled by detecting the discharge current as in Patent Document 1, and the ion balance is controlled based on the voltage applied to each electrode and the voltage set by the volume as in Patent Document 2. Compared with this method, feedback control is performed using the ion amount directly detected by the ion amount sensor and the ion balance directly detected by the ion balance sensor, thereby enabling more accurate ion amount control and ion balance control. it can.

In addition, when the cleaning is not executed after a certain period of time, in addition to the cleaning display that prompts the electrode to be cleaned, an alarm display is made to indicate that the user needs to be cleaned. Can be strongly aroused. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a DC ionizer body. A needle-like positive electrode 12P and a negative electrode 12N are arranged in the rear of the casing 11, and an air blower is provided in the front of the casing 11. Fan 13 is placed. There may be a plurality of positive and negative electrodes.

[0018] An ion balance sensor 14 is disposed in front of the fan 13, and an ion amount sensor 15 is disposed in a position corresponding to the negative electrode 12N in front of the fan 13. Here, the ion balance sensor 14 is a sensor that detects ion balance by measuring ion current according to the amount of positive ions and negative ions, for example, a conductive protection disposed in front of the fan 13. A member (guard electrode) can be used. The ion amount sensor 15 is a sensor that detects the ionic current caused by the negative ions sent through the fan 13 as well as the ambient force of the negative electrode 12N, and is a sensor that converts the ionic current into a voltage and outputs it. It is configured.

[0019] The output signal of the ion balance sensor 14 is input to the amplifier 21P to control the voltage applied to the positive electrode 12P, and the output signal of the ion amount sensor 15 is applied to the negative electrode 12N. To control the amplifier 21N. The output signals of both amplifiers 21P and 21N are input to the CPU 22, and the output signals are passed through the voltage adjustment circuit 23 to the high voltage generation circuit 24P on the positive electrode 12P side and the high voltage generation circuit 24N on the negative electrode 12N side. And are input respectively. The positive high voltage output from the high voltage generating circuit 24P is applied to the positive electrode 12P, and the negative high voltage output from the high voltage generating circuit 24N is applied to the negative electrode 12N.

[0020] Further, a display control circuit 25 is connected to the CPU 22, and the display control circuit 25 has a display lamp 26a that is lit to prompt cleaning of the electrodes 12P and 12N, and has not yet been turned. When the display lamp 26a is on (when the display lamp 26a remains displayed for a certain period of time), the display lamp 26b that lights and displays an alarm is connected.

In the above configuration, the parts other than the ionizer body 10 constitute a controller, and the components of this controller are built in the casing 11. The amplifiers 21P and 21N, the CPU 22, the voltage adjustment circuit 23, and the high voltage generation circuits 24P and 24N constitute control means in the claims.

Next, the operation of this embodiment will be described.

In the present embodiment, the CPU 22 detects the positive / negative ion tolerance of the output signal force of the ion balance sensor 14, calculates the positive voltage applied to the positive electrode 12 P, and outputs it to the voltage adjustment circuit 23. The voltage adjustment circuit 23 generates a control signal for generating the output voltage calculated by the CPU 22 and outputs it to the high voltage generation circuit 24P.

On the other hand, the output signal force of the ion amount sensor 15 is also detected by the CPU 22 and the negative voltage applied to the negative electrode 12N is calculated and output to the voltage adjusting circuit 23. The voltage adjustment circuit 23 generates a control signal for generating the output voltage calculated by the CPU 22 and outputs it to the high voltage generation circuit 24N.

[0024] If the amount of positive and negative ions is unbalanced, the ion balance sensor 14 detects an excess or deficiency of the amount of positive ions, and the detection signal is input to the CPU 22 via the amplifier 21P. The CPU 22 calculates a required positive voltage to be applied to the positive electrode 12P in order to reduce excess positive ions or to compensate for the insufficient positive ions, and the positive side via the voltage adjustment circuit 23 and the high voltage generation circuit 24P. Controls the voltage applied to electrode 12P.

By the above operation, the amount of positive ions and the amount of negative ions are almost equal to maintain the ion balance. The static elimination operation can be performed in a state where

[0025] Further, when the electrodes 12P and 12N become dirty due to long-term use and as a result, the amount of generated ions decreases, the amount of negative ions detected by the ion amount sensor 15 also decreases. The output signal of the ion quantity sensor 15 is input to the CPU 22 via the amplifier 21N.

The CPU 22 calculates the required negative voltage to be applied to the negative electrode 12N in order to increase the decreased negative ions, and applies the voltage to the negative electrode 12N via the voltage adjustment circuit 23 and the high voltage generation circuit 24N. Boost your power! ] As a result, when the ion balance is lost, the applied voltage to the positive electrode 12P is controlled by the control system using the ion balance sensor 14 described above, and the ion balance is maintained.

[0026] In the above description, the applied voltage to the positive electrode 12P is controlled based on the output signal of the ion balance sensor 14, and the applied voltage to the negative electrode 12N is controlled based on the output signal of the ion amount sensor 15. Force applied to control the applied voltage to the negative electrode 12N based on the output signal of the ion balance sensor 14, and to control the applied voltage to the positive electrode 12P based on the output signal of the ion amount sensor 15. It may be configured.

[0027] When a decrease in the amount of negative ions is detected by the ion amount sensor 15, the CPU 22 determines that the electrode needs to be cleaned when the detected amount of ions falls below a preset value, One display lamp 26a is turned on via the display control circuit 25. The cleaning display lamp 26a may be displayed when the voltage applied to the negative electrode 24N or the positive electrode 24 controlled by the CPU 22 exceeds a set value.

[0028] When the display lamp 26a for cleaning has been lit for a certain period or longer, that is, when the amount of generated ions is still small without cleaning the electrode, the display control circuit 25 is used. The other indicator lamp 26b is lit to act as an alarm. In this case, the cleaning display lamp 26a may be lit in yellow and the alarm display lamp 26b in red.

If the two-step lighting display is performed as described above, it is possible to strongly urge the user to clean the electrodes.

Brief Description of Drawings

FIG. 1 is a configuration diagram showing an embodiment of the present invention. Explanation of symbols

10: DC ionizer body 11: Casing

12P: Positive electrode

12N: Negative electrode

13: Fan

14: Ion balance sensor

15: Ion amount sensor

21P, 21N: Amplifier

22: CPU

23: Voltage adjustment circuit

24P, 24N: High voltage generator

25: Display control circuit

26a, 26b: Indicator lamp

Claims

The scope of the claims

[1] A positive DC voltage is applied to the positive electrode to generate positive ions, and a negative DC voltage is applied to the negative electrode to generate negative ions. The ionization includes these positive and negative ions. An ion balance sensor that detects the ion balance of positive and negative ions in a DC ionizer that blows air toward the object to be discharged by a fan;

Based on the output signal of the ion quantity sensor, the voltage applied to the polar electrode detected by the ion quantity sensor is controlled to control the ion quantity of the polarity to be substantially constant, and the ion quantity sensor Control means for controlling the voltage applied to the electrode having the opposite polarity to the polarity based on the output signal of the balance sensor to maintain the ion balance of positive and negative ions;

A DC ionizer characterized by comprising:

[2] In the DC ionizer according to claim 1,

It is characterized by controlling the positive DC voltage applied to the positive electrode in order to maintain the ion balance of positive and negative ions, and controlling the negative DC voltage applied to the negative electrode in order to keep the amount of ions almost constant. DC type ionizer.

[3] In the DC ionizer according to claim 1 or 2,

A DC ionizer characterized in that a conductive protective member disposed in front of the fan is used as the ion balance sensor, and the ion balance is detected from a current flowing through the protective member.

[4] In the DC ionizer according to any one of claims 1 to 3,

A direct current ionizer that detects an ion amount from a current flowing through the ion amount sensor.

[5] In the DC ionizer according to any one of claims 1 to 4,

A direct current ionizer for performing a tally display for prompting cleaning of the electrode based on an output of the ion amount sensor.

[6] In the DC ionizer according to any one of claims 1 to 4,

A tally for encouraging cleaning of the electrode based on the voltage applied to the electrode DC ionizer characterized by Jung display.

In the DC ionizer according to claim 5 or 6,

A direct current ionizer that displays an alarm when the cleaning display continues for a predetermined time or more.