JP2013045591A - Ion wind generation device and gas pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion wind generation device of a ground electrode coating system in which net fluid movement is achieved by covering a ground electrode partially and thereby generating non-uniform discharge before and after a wire electrode.SOLUTION: An ion wind generation device 1 for generating ion wind induced by corona discharge that is generated by applying a high voltage between electrodes comprises: a pair of planar ground electrodes 11a, 11b connected with the ground and disposed so as to face each other; a linear line electrode 13 arranged in a counter spatial region 12 where the ground electrodes 11a, 11b faces each other, in parallel therewith, and to which a high voltage is applied; an insulation cover 15 disposed in a part of the counter surface in the pair of planar ground electrodes 11a, 11b at a position on the upstream side in the output direction of ion wind; and a voltage application unit 14 which applies a voltage to the line electrode 13.

Description

  The present invention relates to an ion wind generator that generates an ion wind induced by corona discharge by applying a high voltage between electrodes.

  In the low-temperature atmospheric pressure plasma, as shown in FIG. 13, when a high voltage is applied between the electrodes, ion wind (EHD: Electrohydrodynamics) induced by corona discharge is generated. In particular, the speed of ion wind in the air is said to reach several tens of m / s. Currently, research using this EHD flow is being conducted in various application fields such as thermal fluid transport and dust removal.

  In recent years, research on EHD gas pumps using the EHD phenomenon has been conducted. The reason for this is that the conventional blade-rotating fan has problems such as wind noise from the blades, vibration due to the rotation, bearing life, difficulty in miniaturization, and inability to generate wind at the center of rotation. On the other hand, the EHD gas pump is an electric direct drive system, so it has (1) no moving parts (2) simple structure (3) low noise, low vibration (4) small size and light weight compared to conventional fans (5) Electric flow with high responsiveness can be controlled (6) Uniform velocity distribution can be generated (7) It is expected that a highly efficient gas pump can be realized.

  Research on EHD gas pumps has been conducted so far (1) Line-non-parallel plate type (2) Line-linear type (3) Needle-ring type (4) Needle-mesh type (5) Ring-ring type, etc. Various types of EHD gas pumps have been proposed. However, it is difficult to say that they generate a sufficient flow rate or flow rate and can maintain a stable discharge over a wide range of applied voltages, and these are compact multi-stage types and highly flexible flow channel shapes. Difficult to design. Therefore, a line-parallel plate that can provide a multistage EHD gas pump that can obtain a sufficient flow rate, can easily maintain a stable corona discharge, is simple in shape, small in size, and has a plurality of line electrodes arranged in the same size as a single-stage type. A type EHD gas pump has been proposed.

  In this line-parallel plate EHD gas pump, partial insulation coating (line electrode coating method) is applied to the line electrode, resulting in non-uniform discharge before and after the line electrode, realizing net fluid movement in one direction. (See FIG. 14, Non-Patent Documents 1 and 2).

  Further, as techniques using EHD, techniques disclosed in Patent Documents 1 and 2 are disclosed. The technology shown in Patent Document 1 relates to a cooling system, and more particularly, to a cooling system that generates forced convection gas flow. According to one aspect, the cooling system is corona wind, microscale corona wind, or temporary. Using a heat sink combined with an EHD pumping mechanism such as controlled ion generation technology, the channel array structure can be used to implement the heat sink, and the EHD pump It is arranged at the inlet or outlet of the channel.

  The technique shown in Patent Document 2 uses a metal taper tube electrode and a metal rod electrode, inserts an electrically insulating tube inscribed on the small diameter side of the metal taper tube electrode, and inserts a metal rod electrode along the central axis thereof. The portion of the metal rod electrode extending from the inside of the metal taper tube electrode to the inside of the electrical insulating tube is exposed, and the other end of the metal rod electrode is covered with an insulating coating and surrounded by the metal taper tube electrode to form a fluid delivery channel. Then, the exposed portion of the metal rod electrode is opposed to the inner surface of the metal taper tube electrode, and a fluid in which dissociated ions are generated when an electric field acts between the metal electrodes is filled between the metal taper tube electrode and the metal rod electrode. A high DC voltage is applied between the metal taper tube electrode and the metal rod electrode.

JP 2008-529284 A JP 2008-141870 A

Hiroaki Tsubo, J.H. S. Chang, GD. Harvel, “Characteristics of line-non-parallel plate type DC electrohydrodynamic gas pump (1st report, influence of wire electrode insulation cover)”, Proceedings of Annual Meeting 2007 of the Japan Society of Mechanical Engineers (2), No07-1, 2007. 9.9-12 Jen-Shin Chang, Hiroaki Tsubone, Glenn D. Harvel and Kuniko Urashima, "Narrow-Flow-Channel-Driven EDH Gas Pump for an advanced Thermal Management of Microelectronics", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL.46, NO.3, MAY / JUNE 2010

  However, the techniques of the wire electrode coating method shown in Non-Patent Documents 1 and 2 have several problems. (1) The coating angle of the wire electrode insulation coating and the symmetry in the vertical and depth directions are the flow velocity and flow rate. (2) It is very difficult to raise the installation accuracy of the wire electrode insulation coating. (3) The wire electrode insulation coating (diameter about 2 mm) shields 40% of the flow path (width 5 mm). That is, the pressure loss becomes large.

Further, in the technique shown in Patent Document 1, since the line electrode which is the first electrode is located at the entrance of the channel of the heat sink, the spark is discharged by the edge of the second electrode, and the ions are efficiently discharged. There is a problem that wind cannot be generated.
Furthermore, the technique shown in Patent Document 2 is a technique based on the premise that a liquid is flowed, and has a problem that the structure is complicated and troublesome when multistage.

  The present invention provides a ground electrode coating type ion wind generator and the like that generate a non-uniform discharge before and after a line electrode by partially covering the ground electrode to realize a net gas movement.

  An ion wind generator according to the present invention is an ion wind generator that generates an ion wind induced by corona discharge by applying a high voltage between electrodes. A plate-like ground electrode, a linear high-voltage line electrode that is arranged in parallel to each ground electrode in a facing space region where the ground electrode is opposed, and to which a high voltage is applied, and A voltage application for applying a voltage to the opposing surfaces of the pair of ground electrodes, an insulator that is part of the opposing surfaces and disposed upstream of the ion wind output direction, and the high-voltage line electrode Means.

  As described above, in the ion wind generator according to the present invention, a pair of flat ground electrodes and a linear high voltage line parallel to each ground electrode in an opposed space region where the ground electrodes are opposed to each other. A coating that requires advanced technology for high-voltage line electrodes because an insulator is disposed on the opposite surface of the ground electrode at a position upstream of the ion wind output direction. There is no need to perform the above and the like, and an ion wind can be easily generated in an arbitrary direction.

  In addition, since the flow path of the ionic wind is not shielded by the insulating coating, there is an effect that the ionic wind can be efficiently flowed.

  Furthermore, since the high-voltage line electrode is disposed in the facing space region where the ground electrode is opposed, it is possible to prevent discharge due to the occurrence of sparks due to edges, and to efficiently generate ion wind. There is an effect that can be done.

  The ion wind generator according to the present invention includes the pair of ground electrodes arranged in parallel.

  Thus, in the ion wind generator according to the present invention, since the ground electrodes are arranged in parallel, the structure can be simplified and the processing can be facilitated, and the gas flow path and the voltage can be reduced. There exists an effect that control can be simplified. In particular, when a plurality of high voltage line electrodes are provided, the voltage of each high voltage line electrode can be controlled collectively.

  In the ion wind generator according to the present invention, the high voltage line electrode is a linear electrode, and is disposed in the facing space region so that the distance from the pair of ground electrodes is the same. The insulator is disposed so that ends of the insulator are aligned at positions of a cross section perpendicular to the pair of ground electrodes and parallel to the high voltage line electrode.

  Thus, in the ion wind generator according to the present invention, the high voltage line electrode is a linear electrode, and is disposed in the opposing space region so that the distance from each ground electrode is the same, Since the insulator is arranged so that the end of the insulator is aligned at the position of the cross section perpendicular to the ground electrode and parallel to the high voltage line electrode, the distance relationship between the high voltage line electrode and the ground electrode , The positional relationship in which the insulator is arranged becomes orderly, the flow path of the ionic wind is efficiently secured, and the ionic wind can be efficiently flowed while suppressing a complicated flow such as a vortex generated by the ionic wind. There is an effect.

  In the ion wind generator according to the present invention, the high voltage line electrode is a linear electrode, and is disposed in the facing space region so that the distance from the pair of ground electrodes is the same. The insulator is arranged so that the end of the insulator is aligned at a position of a cross section perpendicular to the pair of ground electrodes and including the high voltage line electrode.

  Thus, in the ion wind generator according to the present invention, the high voltage line electrode is a linear electrode, and is disposed in the facing space region so that the shortest distance to each ground electrode is the same, Since the insulator is arranged so that the end of the insulator is aligned with the position of the cross section perpendicular to each ground electrode and including the high voltage line electrode, the distance relationship between the high voltage line electrode and the ground electrode In addition, the positional relationship in which the insulator is arranged becomes orderly, the flow path of the ionic wind is efficiently secured, the ionic wind can be efficiently flowed by the flow of vortices generated by the ionic wind, and the high flow rate and There is an effect that a high flow efficiency by the flow rate can be realized.

  In the ion wind generator according to the present invention, a plurality of the high-voltage line electrodes and the insulators are provided in series in a facing space region where the ground electrode is opposed.

  As described above, in the ion wind generator according to the present invention, a plurality of high voltage wire electrodes and insulators are provided in series in the opposed space region where the ground electrode is opposed, so that multi-stages can be realized by simple processing. The ion wind can be generated efficiently.

  In the ion wind generator according to the present invention, the insulator is disposed in a part of a region where the current is at least a predetermined value or more according to a current distribution flowing through the ground electrode when the insulator is not provided. It is what.

  Thus, in the ion wind generator according to the present invention, the insulator is disposed in a part of the region where the current is at least a predetermined value according to the current distribution flowing through the ground electrode when there is no insulator. Therefore, it is possible to reduce the size of the apparatus while minimizing the region where the insulator is disposed while maintaining the generation efficiency of the ion wind.

  An ion wind generator according to the present invention is a gas pump using the ion wind generator, wherein the ion wind is generated in a direction of the opening in a housing having an opening in at least a part thereof. An ion wind generator is provided.

  As described above, the ion wind generator according to the present invention is a gas pump using the ion wind generator so that the ion wind is generated in the direction of the opening in the housing having the opening at least partially. Since the ion wind generator is provided in the above, there is an effect that a highly efficient gas pump using the ion wind can be realized.

It is the schematic of the ion wind generator which concerns on 1st Embodiment. It is a side view of the ion wind generator which concerns on 1st Embodiment. It is a top view of the ion wind generator which concerns on 1st Embodiment. It is a 1st figure which shows the various aspects of the ion wind generator which concerns on 1st Embodiment. It is a 2nd figure which shows the various aspects of the ion wind generator which concerns on 1st Embodiment. It is the schematic of the ion wind generator which concerns on 2nd Embodiment. It is a side view of the ion wind generator which concerns on 2nd Embodiment. It is a side view of the gas pump which concerns on 3rd Embodiment. It is a figure which shows the structure of an experimental apparatus. It is a 1st figure which shows an experimental result. It is a 2nd figure which shows an experimental result. It is a 3rd figure which shows an experimental result. It is a figure which shows the generation | occurrence | production mechanism of an ion wind. It is a figure which shows the structure of the line-parallel plate type EHD gas pump of a line electrode coating system.

  Embodiments of the present invention will be described below. The present invention can be implemented in many different forms. Also, the same reference numerals are given to the same elements throughout the present embodiment.

(First embodiment of the present invention)
An ion wind generator according to this embodiment will be described with reference to FIGS. FIG. 1 is a schematic diagram of an ion wind generator according to the present embodiment, FIG. 2 is a side view of the ion wind generator according to the present embodiment, and FIG. 3 is a top view of the ion wind generator according to the present embodiment. FIG. 4 is a first diagram showing various aspects of the ion wind generator according to the present embodiment, and FIG. 5 is a second diagram showing various aspects of the ion wind generator according to the present embodiment. .

  1 to 3, the ion wind generator 1 according to the present embodiment includes a pair of ground electrodes 11a and 11b connected to the ground and arranged to face each other, and the ground electrodes 11a and 11b facing each other. In the opposed space region 12, the line electrode 13 disposed in parallel with the ground electrodes 11a and 11b, the voltage applying unit 14 for applying a high voltage to the line electrode 13, and the opposing surface side of the ground electrodes 11a and 11b An insulating cover 15 having an insulating property is provided at a position that is a part of the surface and upstream of the direction in which the ion wind is output.

  The opposing space region 12 is a space region where the ground electrodes 11a and 11b are opposed to each other, and when the ground electrodes 11a and 11b are viewed from the overhead, the ground electrodes 11a and 11b overlap each other. The corresponding spatial region. By arranging the line electrode 13 in such a facing space region 12, it is possible to prevent a spark from being generated by the edge.

  Here, the pair of ground electrodes 11a and 11b are arranged in parallel in the same rectangular shape. The line electrode 13 is arranged at a position parallel to the ground electrodes 11a and 11b and at the same distance from each electrode. The line electrode 13 is connected to a voltage application unit 14 which is a direct current high voltage power source, and is applied with a positive voltage.

  The insulating cover 15 disposed on the surface of the ground electrodes 11a and 11b on the opposite surface side has a cross section F (see FIG. 2) whose end is perpendicular to the ground electrodes 11a and 11b and includes the line electrode 13. It is arranged so as to be aligned with the position P, and is arranged so as to cover the region A of the ground electrodes 11a, 11b on the upstream side in the output direction of the ion wind indicated by the arrow in the drawing.

  As shown in FIGS. 1 to 3, the insulating cover 15 is preferably provided upstream of the direction in which the ion wind is output with reference to the position of the line electrode 13, but at least downstream in the direction in which the ion wind is output. If the ground electrodes 11a and 11b are exposed in a part of the side, the ion wind can be generated in the intended direction (here, in the right direction with respect to the paper surface).

  When a positive or negative high voltage is applied to the line electrode 13, an uneven electric field composed of the ground electrodes 11 a and 11 b and the line electrode 13 is locally concentrated and a place where the electric field is strong is concentrated and spark discharge occurs. A local corona discharge is generated at a portion where the electric field is concentrated before the occurrence of the occurrence. Excited by ion migration by this corona discharge, a fluid (air in the atmosphere) flows. The ion wind that is the air flow is generated from the line electrode 13 toward the pair of ground electrodes 11a and 11b. As shown in FIGS. 1 to 3, in the ion wind generator according to the present embodiment, since the insulating cover 15 is disposed in a partial region of the ground electrodes 11 a and 11 b, the insulating cover 15 extends from the line electrode 13. Corona discharge does not occur in the direction in which 15 is disposed, and as a result, ion wind from the line electrode 13 toward the insulating cover 15 does not occur. That is, an ion wind is generated in the direction of the arrow in the figure.

  In the ion wind generator 1 according to the present embodiment, as shown in FIGS. 4A and 4B, the position of the end of the insulating cover 15 is perpendicular to the ground electrodes 11 a and 11 b and the line electrode 13. It is not necessary to be arranged so as to be aligned with the position P of the cross section F including the same, but to be arranged so as to be aligned with the position P of the cross section F perpendicular to the ground electrodes 11a and 11b and parallel to the line electrode 13. Also good.

  Further, as shown in FIG. 4C, the line electrodes 13 do not have to be disposed at the same distance from the ground electrodes 11a and 11b, but at different positions (the ground electrode 11a and the ground electrode 11a). The distance between the line electrode 13 and the distance between the ground electrode 11b and the line electrode 13 may be arranged at a position where the distance is not the same. In FIG. 4C, the distance between the ground electrode 11a and the line electrode 13 is shorter than the distance between the ground electrode 11b and the line electrode 13. Further, as shown in FIG. 4D, the ground electrodes 11a and 11b may not be arranged in parallel.

  Furthermore, as shown in FIG. 4E, a plurality of ground electrodes 11a to 11d, line electrode 13, and insulating cover 15 may be arranged in parallel. That is, the line electrode 13 and the insulating cover 15 are provided in the opposing space regions between the ground electrodes 11a and 11c, between the ground electrodes 11c and 11d, and between the ground electrodes 11d and 11b, respectively. By doing so, the output of the ion wind can be increased. Furthermore, as shown in FIG. 4F (the upper diagram is a sectional view and the lower diagram is a side sectional view), the ground electrode 11 may be formed in a duct shape (the section is rectangular, circular, elliptical, etc.). A line electrode 13 is provided along the circumferential direction of the ground electrode 11, and an insulating cover 15 is provided so as to cover the inside of the ground electrode 11 on the upstream side in the direction in which the ion wind is output. You may make it prepare. By doing so, the output of the ion wind can be increased.

  Furthermore, as shown in FIGS. 5A and 5B, when viewed from above, the positions of the end portions of the insulating cover 15 and the line electrodes 13 may or may not coincide with each other. It does not need to be parallel or parallel.

  Furthermore, as shown in FIG. 5C, the line electrode 13 may not be linear. Furthermore, as shown in FIGS. 5D and 5E, the ground electrode 11a and the ground electrode 11b only need to be disposed so as to have opposing space regions 12, and the size and shape are not limited.

  As described above, according to the ion wind generator according to the present embodiment, in order to control the flow direction of the ion wind, it is only necessary to coat the insulating cover 15 on the ground electrodes 11a and 11b, so that processing and installation are extremely difficult. It can be manufactured easily and with high accuracy. Further, the shielding around the center of the flow path can be reduced, and the fluid can be flowed with high efficiency by reducing the pressure loss. Furthermore, it is possible to prevent the occurrence of sparks and the like due to the presence of edges and the like, and to generate an ion wind efficiently.

(Second embodiment of the present invention)
The ion wind generator according to this embodiment will be described with reference to FIGS. FIG. 6 is a schematic view of the ion wind generating apparatus according to the present embodiment, and FIG. 7 is a side view of the ion wind generating apparatus according to the present embodiment.
In addition, in this embodiment, the description which overlaps with the said 1st Embodiment is abbreviate | omitted.

  The ion wind generator 1 according to the present embodiment is provided with a plurality of the line electrodes 13 and the insulating covers 15 in the first embodiment in series in the facing space region 12 where the ground electrodes 11a and 11b are opposed to each other. is there. Further, the insulating cover 15 at that time is disposed in a part of a region where the current value is at least a predetermined value or more according to the distribution of the current flowing through the ground electrodes 11a and 11b.

  As shown in FIG. 6, the ion wind generator 1 includes a plurality of line electrodes 13 (here, 13a and 13b) in a facing space region 12 of a pair of ground electrodes 11a and 11b arranged to face each other. Although two are shown, any number may be provided) and a plurality of insulating covers 15 (here, two of 15a and 15b are shown, but they are provided in a number corresponding to the line electrode 13). May be provided). The positional relationship between each line electrode 13 and the insulating cover 15 is the same as that shown in the first embodiment, and a plurality of them are continuously provided in series. A positive voltage is applied to each line electrode 13 from a common voltage application unit 14, and corona discharge is generated for each line electrode 13. That is, the flow of the fluid excited by the corona discharge generated for each line electrode 13 is additionally increased, and the ion wind can be generated with high output and high efficiency.

  At this time, there is a possibility that corona discharge occurs in the direction of the region (region Z) where the line electrode 13a is sandwiched between the insulating covers 15a and 15b. That is, the ion wind is generated in the direction opposite to the direction in which the ion wind is to be generated, which may reduce the efficiency. Therefore, in this embodiment, in order to prevent such a situation, the insulating cover 15 is provided only in a necessary region according to the current distribution of the ground electrodes 11a and 11b.

  As shown in FIG. 7, when the insulating cover 15 is not provided, it is assumed that current flows through the ground electrodes 11a and 11b with a distribution as shown in FIG. 7A, for example. In this case, in order to minimize the influence of the ion wind generated by corona discharge between the line electrode 13a and the region B, a threshold value is set with a value as shown in FIG. The part is covered with an insulating cover 15. That is, as shown in FIG. 7B, one end portion of the insulating cover 15 is positioned at a cross section perpendicular to the ground electrodes 11a and 11b and including the line electrode 13, as shown in the first embodiment. The other end is disposed so as to cover a region where a current exceeding a threshold value flows. By doing so, it is possible to eliminate ion wind generated in a direction that inhibits net gas movement.

  Thus, according to the ion wind generator according to the present embodiment, by providing a plurality of insulating covers 15 that are paired with a plurality of line electrodes 13, it is possible to easily increase the output of the ion wind, A miniaturized ion wind generator can be realized that maintains high efficiency while minimizing the area covered by the insulating cover 15.

(Third embodiment of the present invention)
The gas pump according to the present embodiment will be described with reference to FIG. FIG. 8 is a side view of the gas pump according to the present embodiment.
In addition, in this embodiment, the description which overlaps with each said embodiment is abbreviate | omitted.

  The gas pump 20 according to the present embodiment uses the ion wind generator 1 according to each of the embodiments. That is, as shown in FIG. 8, an ion wind generator 1 is provided in a housing 22 having an opening 21 at least partially so that an ion wind is generated in the direction of the opening 21. By setting it as such a structure, the gas pump which discharges | emits ion wind from the opening part 21 is realizable.

  Thus, according to the gas pump which concerns on this embodiment, the high performance gas pump using the ion wind generator in each said embodiment is realizable.

The gas pump was prototyped and its performance experiment was conducted.
FIG. 9 shows the configuration of the experimental apparatus according to this example. The experiment was conducted under atmospheric pressure using air at room temperature as the working fluid. A positive voltage was applied to the line electrode using a DC high voltage power supply. A high voltage probe, an oscilloscope, a DC ammeter were used to measure the applied voltage and the discharge current, a hot-wire anemometer was used to measure the air flow velocity, and a differential pressure gauge was used to measure the pressure difference.

  Regarding the air flow velocity, the horizontal and vertical lines at the center of the cross section were measured at intervals of 2 mm in the vertical cross section in the flow direction at a position 5 mm away from the pump for both the outlet and the inlet, and the average value was taken as the representative speed. The air flow rate was calculated from the channel cross section and the average flow velocity (Q = A × V).

  A channel made of acrylic resin and having a rectangular cross section (height 5 mm × width 10 mm) was used as the channel. A stainless steel wire having a diameter of 0.24 mm was used for the wire electrode, and a pair of brass flat plates were used for the ground electrode, and the wire electrode was installed at a position that is vertically symmetrical with the wire electrode. The insulating coating was installed according to the distance from the wire electrode. In this example, the distance between the insulating coating and the line electrode was L, and the experiment was performed at six installation positions between L = −6 mm and 2 mm.

  FIG. 10 shows the experimental results of the discharge characteristics. The plots indicated by the arrows in the figure are based on gas pumps when insulating coatings are applied to the wire electrodes as shown in the conventional non-patent documents 1 and 2 (the wire electrode coating method is used and the coating angle is 180 °). Experimental results are shown. Regardless of the position L of the insulating coating, discharge occurred at an applied voltage of 5.5 kV or higher, and the discharge current I increased in a quadratic function with the increase in voltage, and sparked at about 8 kV or 8.5 kV. Also, the discharge current tended to decrease with increasing L. This is because the area of the ground electrode that attracts gas molecules that are ionized near the line electrode and have a positive charge is reduced.

  FIG. 11 shows the experimental results of the flow velocity and flow rate of air at the pump outlet. The plots indicated by the arrows in the figure show the experimental results using a line electrode coating type gas pump. Basically, in any insulation coating position L, the flow velocity U and the flow rate Q increased as the applied voltage increased. The maximum flow velocity and flow rate reached U = 3.4 m / s and Q = 0.17 l / s when L = 0 mm and V = 8 kV. Compared to the case of the wire electrode coating method, the maximum increase was 2.2 times.

  Here, qualitatively, it can be classified into two cases, when L is −6 to −2 mm and when it is 0 to 2 mm. When L ≦ −2 mm, a VU relationship similar to that of the wire electrode coating method was exhibited, and the flow velocity and flow rate reached a peak or peak at a certain arbitrary applied voltage, and then tended to decrease. However, when L ≧ 0 mm, the flow rate and flow rate tended to increase with increasing applied voltage. This difference is considered to be because the influence of the ion wind due to the discharge in the reverse direction can no longer be ignored as the applied voltage increases when L is negative with L = 0. That is, when L is negative, it is considered that the ion wind due to the reverse discharge becomes higher in output as the applied voltage increases, preventing the net flow of gas flowing in the forward direction.

  FIG. 12 shows the experimental results of the pump efficiency. Unlike L ≦ −2 mm, when L ≧ 0 mm, the pump efficiency tends to increase as the applied voltage increases, and when L = 0 mm, the maximum efficiency is η = 0.18%. In addition, when L ≦ −2 mm, the pump efficiency is lower than that of the line electrode coating method when compared with the wire electrode coating method. However, when L ≧ 0 mm, the applied voltage is about 7.5 kV or more. It was found that the maximum efficiency of the gas pump was increased by about 54% compared to the wire electrode coating method. In addition, even when L ≦ −2 mm, it can be seen that when the applied voltage is 6.0 kV or less, the result is more efficient than the line electrode coating method.

  From the above experimental results, it became clear that the flow rate and flow rate can be increased and the pump efficiency can be greatly improved by using the gas pump according to the present invention. Thereby, the feasibility and superiority of the gas pump according to the present invention were clearly shown.

DESCRIPTION OF SYMBOLS 1 Ion wind generator 11a, 11b Ground electrode 12 Opposite space area 13 Wire electrode 14 Voltage application part 15 Insulation cover 20 Gas pump 21 Opening part 22 Case

Claims (7)

In an ion wind generator that generates an ion wind induced by corona discharge by applying a high voltage between the electrodes,
A pair of flat ground electrodes connected to the ground and disposed opposite to each other;
A linear high-voltage line electrode that is disposed in parallel to each ground electrode in an opposing space region where the ground electrode is opposed, and to which a high voltage is applied;
An insulator disposed on a facing surface of the pair of ground electrodes, at a position that is a part of the facing surface and is upstream of the output direction of the ion wind;
An ion wind generator comprising: voltage applying means for applying a voltage to the high voltage line electrode. In the ion wind generator of Claim 1,
An ion wind generator, wherein the pair of ground electrodes are arranged in parallel. In the ion wind generator according to claim 2,
The high voltage line electrode is a linear electrode, and is disposed in the facing space region so that the distance between the pair of ground electrodes is the same.
An ion wind generator characterized in that the insulator is arranged so that the end of the insulator is aligned at a position of a cross section perpendicular to the pair of ground electrodes and parallel to the high voltage line electrode. . In the ion wind generator according to claim 2,
The high voltage line electrode is a linear electrode, and is disposed in the facing space region so that the distance between the pair of ground electrodes is the same.
The ion wind generator according to claim 1, wherein the insulator is arranged so that an end of the insulator is aligned at a position of a cross section perpendicular to the pair of ground electrodes and including the high voltage line electrode. In the ion wind generator of Claim 3 or 4,
An ion wind generator, wherein a plurality of the high-voltage line electrodes and the insulator are provided in series in a facing space region where the ground electrodes are opposed to each other. In the ion generator according to claim 5,
Ion wind generation, wherein the insulator is disposed in a part of a region where the current is at least a predetermined value according to a current distribution flowing through the ground electrode in the absence of the insulator apparatus. A gas pump using the ion wind generator according to any one of claims 1 to 6,
A gas pump characterized in that the ion wind generator is provided in a housing having an opening at least partially so that the ion wind is generated in the direction of the opening.