JP2007242568A - Static eliminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a static eliminator capable of preventing generation of mist, and of flying ions over a sufficiently long distance. <P>SOLUTION: This static eliminator is structurally provided with: one or more discharge electrodes; a housing for housing the discharge electrode(s); an ion emitting opening formed on the housing for emitting the ions generated from the discharge electrode(s) to the outside; at least one fan mounted to the housing for supplying fan blow toward the ion emitting opening to spray the ions to the outside from the inside of the housing through the ion emitting opening; and a compressed air supply means for supplying compressed air for generating a venturi effect to the fan blow containing the ions for carrying the ions sprayed from the ion emitting opening to the distance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a static eliminator (a static eliminator).

  Japanese Unexamined Patent Publication No. 2000-306693 discloses an air blow gun type static eliminator for preventing generation of fog and preventing electric leakage. In the invention of this publication, compressed air is used, but it is not directed to the discharge electrode, and compressed air is supplied to ions generated from the discharge electrode and exiting from the housing in order to prevent generation of fog. And ions are blown away.

Japanese Patent Application Laid-Open No. 2004-349092 discloses a bar-type static eliminator with a fan that does not cause generation of fog. In the invention of this publication, a fan is provided inside or outside the housing for housing a plurality of discharge electrodes without using compressed air to prevent generation of fog, and air is supplied from the fan toward the discharge electrode. To do. Thereby, while preventing generation | occurrence | production of fog, the ion generated from the discharge electrode is made to fly away.
JP 2000-306693 A JP 2004-349092 A

  However, in the former conventional example, the compressed air is supplied to the ions that have come out of the housing to prevent the generation of fog, so that the ions can be moved far away. There was a problem that could not be done.

  In the latter conventional example, ions are blown away by using fan blow by a fan instead of compressed air. However, fan blow has a problem that the wind force is weak and ions cannot be blown far away. It was.

  Accordingly, an object of the present invention is to provide a static eliminator capable of preventing the generation of fog and flying ions sufficiently far away.

  In order to achieve the above-mentioned object, the present invention is formed in the housing for discharging at least one discharge electrode, a housing for housing the discharge electrode, and ions generated from the discharge electrode to the outside. And at least one fan attached to the housing for supplying a fan blow toward the ion outlet to cause ions to be ejected outwardly from within the housing through the ion outlet. And a compressed air supply means for supplying compressed air that causes a venturi effect to a fan blow containing ions to carry ions ejected from the ion emission port to a distance. Is adopted.

  According to the present invention, it is possible to obtain a static eliminator capable of preventing generation of fog and flying ions sufficiently far away.

  By preventing the generation of fog, high-voltage leakage that is fed to the discharge needle is prevented.

  Moreover, the ion discharge amount can be increased by the fan to increase the charge removal capability, and the internal pressure of the housing is increased by the fan, so that dust or the like floating outside can be prevented from entering from the ion discharge port.

  In addition, a filter can be provided for the fan to prevent entry of dust and the like from the outside when air is supplied by the fan.

  In the static eliminator of the present invention, at least one discharge electrode, a housing for housing the discharge electrode, an ion emission port formed in the housing for discharging ions generated from the discharge electrode to the outside, At least one fan attached to the housing for supplying a fan blow toward the ion emission port to cause ions to be ejected from the housing through the ion emission port; and the ion emission port Compressed air supply means is provided for supplying compressed air that causes a venturi effect to a fan blow containing ions in order to carry ions ejected from the remote.

Next, a static eliminator according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining the static eliminator of the first embodiment. Among these, FIG. 1a is a cross-sectional view of the static eliminator along the arrow in FIG. 1b, and FIG. 1b is a side view of the ion emission port side. It is. 2 is a cross-sectional view showing the static eliminator of the second embodiment, FIG. 3 is a cross-sectional view showing the static eliminator of the third embodiment, and FIG. 4 is a cross-sectional view showing the static eliminator of the fourth embodiment. Is a cross-sectional view showing a static eliminator of Example 5, FIG. 6 is a cross-sectional view showing a static eliminator of Example 6, FIG. 7 is a cross-sectional view showing a static eliminator of Example 7,
Example 1
As shown in FIG. 1, the static eliminator of Example 1 has a prismatic housing 1. A plurality of (four in the circumferential direction in this embodiment) discharge electrodes (discharge needles) 4 provided on the holding body are provided on one end portion 1a (ion discharge port end portion) of the housing 1 as discharge electrodes. 4 is provided so that the ions (shown by broken lines) generated in 4 are directed outward of the housing 1. A cylindrical through hole is formed in the end portion, and the discharge electrode 4 is disposed in the through hole. Any appropriate voltage, for example, a DC voltage, an AC voltage, or a pulsed voltage that is alternately switched, is applied to the discharge electrode 4.

  A compressed air nozzle 1c is formed at the protruding central portion of the ion emission port end portion 1a of the housing 1, and a compressed air flow path 1b extending from the side portion to the compressed air nozzle 1c is formed. The compressed air is jetted at the center of the arrangement of the plurality of discharge electrodes through the compressed air passage 1b and the compressed air nozzle 1c.

  A fan 2 is provided inside the other end portion (the end portion opposite to the end portion of the ion emission port). A filter 3 is provided behind the fan 2, that is, on the opening side. As indicated by the arrow, the air (air) taken into the opening of the housing 1 from the outside by the fan blow by the fan 2 is removed with dust and the like by the filter 3 and directed toward the opposite end, and around the discharge electrode. It is injected outside through. At that time, the jet of compressed air acts as a venturi effect on the fan blow containing ions, and the fan blow can be blown away further. That is, ions can be blown farther, and the charge removal of the charge removal object can be increased.

In this embodiment, compressed air is jetted through the center of the arrangement of the plurality of discharge electrodes through one compressed air nozzle 1c. However, the compressed air nozzle 1c is formed outside each ion discharge port. May be arranged.
(Example 2)
As shown in FIG. 2, in the static eliminator of the second embodiment, the fan 2 and the filter 3 are provided on the side wall portion of the housing 1 instead of the fan 2 and the filter 3 provided at the open end of the housing. Yes.
(Example 3)
As shown in FIG. 3, in the static eliminator of the third embodiment, in addition to the fan 2 and the filter 3 provided at the open end of the housing, another fan 2 and a filter 3 are provided on the side wall portion of the housing 1. It has been.
Example 4
As shown in FIG. 4, the static eliminator of the fourth embodiment is provided with the blower pipe 5 of the filter 3 of the first embodiment. For this reason, inhalation of dust in the vicinity of the static eliminator, particularly in the vicinity of the end of the open port can be prevented.
(Example 5)
As shown in FIG. 5, in the static eliminator of the fifth embodiment, the blower pipe 5 of the filter 3 of the second embodiment is provided. For this reason, inhalation of dust in the vicinity of the static eliminator, particularly in the vicinity of the end of the open port can be prevented.
(Example 6)
As shown in FIG. 6, in Example 6, arrangement | positioning of the fan 2, the filer 3, and the ventilation pipe 5 in Example 4 is reversed.
(Example 7)
As shown in FIG. 7, in Example 7, arrangement | positioning of the fan 2, the filer 3, and the ventilation pipe 5 in Example 5 is reversed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the static eliminator of Example 1, Among these, FIG. 1a is sectional drawing of the static eliminator along the arrow of FIG. 1b, FIG. 1b is a side view by the side of an ion emission port. 6 is a cross-sectional view illustrating a static eliminator of Example 2. FIG. 6 is a cross-sectional view showing a static eliminator of Example 3. FIG. 6 is a cross-sectional view showing a static eliminator of Example 4. FIG. 10 is a cross-sectional view showing a static eliminator of Example 5. FIG. 10 is a cross-sectional view showing a static eliminator of Example 6. FIG. 10 is a cross-sectional view showing a static eliminator of Example 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 1b Compressed air flow path 1c Compressed air nozzle 2 Fan 3 Filter 4 Discharge electrode 5 Blower pipe

Claims (7)

At least one discharge electrode;
A housing for housing the discharge electrode;
An ion emission port formed in the housing for discharging ions generated from the discharge electrode outward;
At least one fan attached to the housing for supplying a fan blow toward the ion outlet to cause ions to be ejected out of the housing through the ion outlet;
Compressed air supply means for supplying compressed air that causes a venturi effect to a fan blow containing ions in order to carry ions ejected from the ion discharge port to a distance;
A static eliminator comprising:   2. The static eliminator according to claim 1, wherein a flow path of the compressed air by the compressed air supply means is electrically separated from the discharge electrode.   3. The static eliminator according to claim 1, wherein when there are a plurality of the discharge electrodes, an outlet for compressed air by the compressed air supply means is formed at the center of the discharge electrode.   The static eliminator according to any one of claims 1 to 3, wherein the fan is disposed on a side wall portion of the housing, an end wall portion opposite to the ion emission port of the housing, or both portions. A static eliminator characterized by   5. The static eliminator according to claim 1, further comprising a filter attached in association with the fan so as to remove dust contained in the air supplied to the fan. Static eliminator.   6. The static eliminator according to claim 1, further comprising a blower pipe attached to the outside of the housing in order to supply air to the fan from a distance. The static eliminator according to any one of claims 1 to 6, wherein a blower pipe is provided outside the housing, and the fan is attached to an air supply side of the blower pipe.