JPS61257251A - Ionic wind generator - Google Patents

Abstract

PURPOSE:To change over the direction of an ionic wind in accordance with an object by providing discharge electrodes so as to induce a corona discharge for counter electrodes from the different direction and providing a high-voltage changeover means between one part of the discharge electrodes and the counter electrodes. CONSTITUTION:In an ionic wind generator used for the air purifier of the inside of a vehicle chamber, the interval of both leading ends of plural counter electrodes 7 and the discharge electrodes 5 is regulated so that the ionic current sufficient in the generation of the ionic wind is conducted and the horizontal positions are regulated so that the discharge electrodes are positioned in the intermediate parts of the counter electrodes 7. A high-voltage generator 11 for generating the ionic wind which is housed and fixed in a case 2 is changed over with a changeover switch 4. When the high voltage is impressed on the counter electrodes and one part of the discharge electrodes, the corona discharge is generated and the ionic wind is flowed but when the high voltage is impressed on the other part of the discharge electrodes with the changeover means, the ionic wind can be generated from a different direction.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an ion wind generation device that utilizes ion wind generated when a high voltage is applied between a discharge electrode and a counter electrode. It is effective for use in air purifiers such as

(Prior Art) Conventionally, this type of ion wind generator includes a discharge electrode and a counter electrode disposed opposite to the discharge electrode, as disclosed in Japanese Patent Publication No. 57-58219, for example. An air purifier is known that collects dust by applying a high voltage between the discharge electrode and the counter electrode using the ionic wind generated from the discharge electrode toward the counter electrode.

That is, the air near the discharge electrode is ionized by the corona discharge, and the ions flow toward the counter electrode due to electrostatic force. In this process, it collides with many electrically neutral molecules, creating a flow of molecules, or a wind. Dust in the air is also ionized during corona discharge, and thus is trapped on the counter electrode by electrostatic force.

This type of air purifier uses ionized wind to integrate the blower and dust collection means, so it can provide a small and lightweight air purifier without using a blower with a fan and motor or a dust collection filter. It is possible.

(Problems to be Solved by the Invention) However, in the air purifier having such a structure, the discharge electrode is disposed in only one direction with respect to the counter electrode.
Since the ion wind flows in one direction from the discharge electrode to the counter electrode, the air passing through the air cleaner is also fixed in one direction. For example, if an air purifier like the one described above is installed in the approximate center of the ceiling of a passenger car so that the air flows from the front to the rear of the vehicle, if there is a smoker in the front seat, the smoke will flow through the wind. The smoke can be purified quickly because it can reach the air purifier by riding the flow of smoke, but if there is a smoker in the rear seat, the smoke will not be purified easily because the rear seat is on the leeward side.

As described above, in the conventional ion wind generator, the direction of the ion wind cannot be changed depending on the purpose.

(Means for Solving the Problems) The configuration of the ion wind generator of the present invention that solves the above problems is that corona discharge is induced from at least two different directions using a discharge electrode with respect to a counter electrode. The present invention is characterized in that it is further provided with a switching means for selectively applying a high voltage between either one of the at least two discharge electrodes and the opposing electrode.

(Function) In the above configuration, when a high voltage is applied between the counter electrode and at least one of the two discharge electrodes, a corona discharge is generated from the discharge electrode toward the counter electrode, and the ion wind At this time, the voltage flows from the discharge electrode to which the voltage is applied toward the counter electrode. When a high voltage is applied by the switching means between the opposing electrode and the discharge electrode located in a different direction from the discharge electrode, it becomes possible to generate ion winds from different directions.

(Effects of the Invention) Therefore, according to the present invention, when used in the above-mentioned vehicle air purifier, etc., the present invention can quickly improve the air flow by selecting the wind direction depending on the air pollution status in the vehicle interior. It has excellent effects such as being able to purify the air, and being able to switch the direction of the ionized wind depending on the purpose.

(Example) The present invention will be described below based on an example shown in the drawings. 1st
The figure is a schematic cross-sectional view illustrating the structure of the vehicle air cleaner 1 of the present invention, and FIG. 2 is a perspective view illustrating the specific structure thereof. Reference numeral 2 denotes a generally rectangular resin case constituting the main body of the air purifier, and is fixed to a substantially central part of the vehicle ceiling, as shown in the schematic diagram of the vehicle mounted state in FIG. A front vent hole 3 and a rear vent hole 4 are provided on an end surface 2a on the vehicle front side and an end surface 2b on the rear side of the case 2, respectively.

Reference numeral 5 denotes a front discharge electrode made of a wire made of platinum or nichrome with a diameter of several tens of microns, which is arranged on a resin insulating plate 6 fixed to the case 2 and is attached by soldering or mechanically to an electrode plate 5a made of stainless steel or the like fixed thereto. They are electrically connected in parallel by being fixed at regular intervals so that there is no slack due to engagement or the like. Reference numeral 7 denotes a plurality of rectangular opposing electrodes made of plates such as aluminum or stainless steel, which are fixed parallel to each other by being inserted into fixing grooves 8e provided in insulating plates 8 provided on both sides of the case 2. Note that the counter electrode 7
The distance between the front end of the discharge electrode 5 and the front discharge electrode 5 is set so that a sufficient ionic current flows to generate an ionic wind.
The horizontal position is such that the discharge electrode is located midway between the opposing electrodes.

Note that the plurality of counter electrodes 7 are electrically connected in parallel by a connection line (not shown). Further, reference numeral 9 denotes a rear discharge electrode disposed on the rear end side of the counter electrode 7, which is different from the front discharge electrode 5 only in its front and rear positions, but otherwise has the same arrangement and structure. Reference numeral 10 denotes a plurality of dust collection electrodes for further promoting ionization of dust in the air and for efficiently capturing ionized dust, which are made of aluminum or stainless steel plates provided in the space between the opposing electrodes 4. Similarly to the counter electrode 7, its side end portion is fixed to the insulating plate 8.

Note that the plurality of dust collection electrodes 10 are electrically connected by a connection line (not shown).

Reference numeral 11 denotes a high voltage generator for generating ion wind that is housed and fixed in the case 2, and connects the + side terminal of the battery 12 and the main switch 1 provided on the bottom surface 2C of the case 2 of the air purifier.
3, the high voltage generator main device 11 connects to the high voltage side terminal 11
a, 11b, and a low voltage side terminal 11C. Low voltage side electric F
ill'c is connected to a common terminal 14a of a changeover switch 14 provided near the main switch 13 on the bottom surface 2C of the case 2 of the air purifier 1. When the knob of the changeover switch 14 is operated forward, the common terminal 14a and the changeover terminal 1
4b is connected, and when the knob is operated backward, the common terminal 14a and the switching terminal 14G are connected,
The switching terminals 14b and 14C are connected to the front and rear discharge electrodes 5 and 9, respectively. Further, the high voltage side terminal 11a of the high voltage generator 11 is connected to the counter electrode 7, and the other high voltage side terminal 11b is connected to the dust collecting electrode 10.

Next, the operation of the above embodiment will be explained. For example, in FIG. 3, if you smoke on the front seat side of the vehicle, if you operate the main switch 13 of the air purifier to ONL and the changeover switch 14 to the front side, the area between the front discharge electrode 5 and the opposite electrode 7 and the front A high voltage is applied between the side discharge electrode 5 and the dust collection electrode 10. An unequal electric field is formed between the front discharge electrode 5 and the counter electrode 7 due to the difference in the area of the opposing electrodes, and an electric field is created around the front discharge electrode 5, which is made of a thin wire with a diameter of several tens of microns and has a sharp shape. is concentrated and corona discharge occurs.

This corona discharge generates ions with both positive and negative polarities, but ions with the opposite polarity to the front discharge electrode 5 are absorbed by the discharge electrode 5, and only ions with the same polarity are transferred to the opposite electrode 7. I am drawn to it. This ion is
In the process of being attracted to the counter electrode 7, they collide with a large number of neutral molecules, and by giving kinetic energy to these neutral molecules and causing them to move, both ions and neutral molecules head toward the counter electrode 7, creating an ionic wind. to occur.

Moreover, since the dust in the air is charged by the ions generated by the corona discharge, a portion of the dust is captured by the counter electrode 7 on the downstream side of the flow. However, part of the dust captured by this method is not sufficiently purified. On the other hand, a dust collecting electrode 10 is provided in the space between the facing electrodes 7, and since a potential difference is provided between the facing electrode 7 and the dust collecting electrode 10, an electric field is formed between them, and when passing between them, The ionized dust particles are efficiently collected. In the above operation, ionized wind is generated from the front of the vehicle toward the rear, creating an air flow inside the vehicle interior as shown by the solid arrow A in Figure 3, which pollutes the air due to smoking in the front seat. It is quickly purified.

In addition, if you smoke in the rear seat of the vehicle, turn on the main switch 13 of the air purifier and operate the changeover switch 14 to the rear. A high voltage is applied between each of the dust collection electrodes 10, and a flow of air is generated from the rear to the front based on the same principle as described above, and air pollution caused by smoking in the rear seats is quickly purified. Become.

Next, other embodiments of the present invention will be described below.

In the above embodiment, the front and rear discharge electrodes 5
and 9 side are set to low voltage, and counter electrode 7 side is set to high voltage, but these may be connected in reverse (in that case, the front side and rear side discharge electrodes 5 and 9
An electric field concentrates around the electrode, causing corona discharge, but ions having the same polarity as the front and rear discharge electrodes 5 and 9 head toward the counter electrode 10, generating an ion wind.

However, in this case, since the selector switch 14 is placed on the high voltage side, a normal switch would break and cannot be used. Therefore, in this case, selector switch 1
4, it is necessary to use, for example, a DC high voltage semiconductor switch or the like.

Further, in the above embodiment, only one high voltage generator 11 was provided, but as shown in FIG. The 16 low voltage terminals 16a are connected to the side discharge electrode 5 and the rear side discharge electrode 9, respectively, and the child terminals of the battery 12 and the input terminals 15b and 1eb of 15.16 are connected to the front side switch 17. The selector switch 14 may be omitted by connecting it in parallel with the rear switch 18. At this time, both or one of the high voltage terminals 15c and 16c of the high voltage generator 15.16 is connected to the counter electrode 7, and the other high voltage terminal 15d is connected to the counter electrode 7.

Both or one of the electrodes 16d is connected to the dust collecting electrode. In addition, also in the above embodiment, the low voltage terminals 15a, 16a and the high voltage terminals 15c, 16c may be connected to each other, and the opposing electrode side may be set to high voltage.

Further, in the above embodiment, the ion wind was installed to generate the ion wind in the front and back directions of the vehicle, but it may be installed in any direction as needed, such as left and right, and the discharge electrodes can be installed in three or more directions. Ion winds may be generated in three or more directions by switching and applying a voltage between one of the respective discharge electrodes and a common counter electrode, and in that case, the direction of the ion wind can be more efficiently The air will be purified more quickly.

The ion wind generator of the present invention can be widely used in addition to the above-mentioned air cleaners, for example, for cooling cutting tools, circulating air generators in refrigerators, etc.

[Brief explanation of drawings]

FIG. 1 is a sectional view illustrating the structure of the air purifier of the present invention;
FIG. 2 is a perspective view illustrating the specific configuration of FIG. 1, FIG. 3 is a schematic diagram illustrating the state in which the air purifier of the present invention is attached to the roof of a vehicle, and FIG. 4 is a perspective view illustrating the present invention. FIG. 3 is a sectional view illustrating the configuration of another embodiment. 2... Case, 3... Front vent, 4... Rear vent, 5... Front discharge electrode, 7... Opposing electrode, 9... Rear discharge electrode, 10 ... Dust collection electrode, 11
... High voltage generator, 14... Selector switch. Representative Patent Attorney Takashi Okabe Figure 3

Claims (1)

[Claims] A discharge electrode and a counter electrode that induce corona discharge,
In an ion wind generation device that generates an ion wind by applying a high voltage between the discharge electrode and a counter electrode, the discharge electrode is configured to induce corona discharge from at least two different directions with respect to the counter electrode. An ion wind generating device, further comprising a switching means for switching and applying a high voltage between one of the at least two discharge electrodes and the opposing electrode.