CN101341638A - Ion generating element, ion generating unit, and ion generating apparatus - Google Patents

Abstract

The invention provides an ion generating element, an ion generating unit and an ion generating device which are not easy to be touched by fingers, wherein the ion generating element (4) comprises an insulating substrate (41), a linear electrode (45) and a grounding electrode (42), the insulating substrate (41) comprises a main body part (41a), the linear electrode is arranged on the main body part, the tail end of the linear electrode extends out of the main body part, two extending parts extending from the main body part are positioned at two sides of the tail end of the linear electrode and are separated from the linear electrode by a certain distance, the grounding electrode (42) is arranged on the two extending parts, and the tail ends of the two extending parts (41b, 41c) are connected.

Description

Ion generating element, ion generating unit and ion generating device

technical field

The invention relates to an ion generating element, an ion generating unit and an ion generating device, in particular to an ion generating element comprising an insulating substrate, a linear electrode and a ground electrode, an ion generating unit and an ion generating device.

Background technique

As such an ion generator, the ion generator disclosed in Patent Document 1 is known. Specifically, as shown in the exploded perspective view of FIG. 7 , the ion generator 101 includes a ground electrode 142 disposed on an insulating substrate 141 , a high voltage electrode 143 , an insulating film 144 covering the surface of the ground electrode 142 , and a linear electrode 145 . The insulating substrate 141 has a concave portion 141a cut at one end thereof, and the starting end of the linear electrode 145 is welded to the high voltage electrode 143, and the terminal end protrudes from the concave portion 141a.

In this known ion generating device 101 , a finger can be inserted into the device through the concave portion 141 a, so that the linear electrode 145 may be touched. Since a high voltage for generating a strong electric field is supplied to the wire electrode 145, the wire electrode 145 should not be touched by a finger.

Patent Document 1: Japanese Patent Application Publication, Publication No. 2005-63827

Contents of the invention

An object of the present invention is to provide an ion generating element, an ion generating unit, and an ion generating device in which a finger does not easily touch a linear electrode.

As a first solution, the ion generating element includes an insulating substrate, a linear electrode, and a ground electrode. The insulating substrate includes a main body part and two extension parts, and a linear electrode whose end protrudes from the main body part is arranged on the main body part, and the two extension parts extend from the main body part and are located at the ends of the above-mentioned linear electrode. There is a certain distance between the two sides and the linear electrode, and the tail ends of the two extensions are connected.

According to the ion generating element as described above, since the tail ends of the two extension parts are connected, the linear electrode is prevented from being touched by fingers, thereby improving the safety of the ion generating element.

According to the first solution above, the ground electrodes formed on the two extensions are preferably connected at the tail ends of the two extensions.

Since the ground electrode is continuous at the tail ends of the two extensions, the electric field is more likely to be intensively generated between the ground electrode and the linear electrode, so that the ion generating element can generate ions more efficiently.

According to the second aspect, the ion generating element includes an insulating substrate, a linear electrode, and a ground electrode. The insulating substrate includes a main body and two extensions, the main body is provided with a linear electrode whose end protrudes from the main body, the two extensions extend from the main body and are located on both sides of the linear electrode, two There is a certain distance between them and the linear electrode, the distance between the tail ends of the two extension parts is smaller than the distance between other parts of the two extension parts, and the distance between the tail ends of the two extension parts is preferably 3mm or less.

According to the ion generating unit as described above, since the distance between the tail ends of the two extensions is small, the linear electrode can be prevented from being touched by fingers, thereby improving the safety of the ion generating unit.

In the first aspect and the second aspect, the diameter of the linear electrode is preferably 100 μm or less.

Since thin wire electrodes having a diameter of 100 μm or less are used, electrons are more likely to concentrate at the ends of the wire electrodes, so that a strong electric field can be generated.

In the first aspect and the second aspect, the surface of the ground electrode is preferably covered with an insulating film.

Since the surface of the ground electrode is covered by the insulating film, the effect of suppressing the amount of ozone generated can be achieved under the premise that the amount of negative ions generated basically does not change.

In the first aspect and the second aspect, it is preferable that the insulating film covers the entire surface of the ground electrode except the portion corresponding to the end of the linear electrode.

Since the tail end of the ground electrode is not covered by the insulating film, a current leakage occurs between the ground electrode and the linear electrode, thereby generating a small amount of ozone while generating ions.

In the first solution and the second solution, the ground electrode is preferably a resistor.

The ground electrode is formed of a resistor such as a ruthenium oxide resistor or a carbon resistor. Even if the wire electrode comes into contact with the ground electrode, since the ground electrode is a resistor, heat generation due to a short circuit can be suppressed. Among them, ruthenium oxide is the most suitable material, because even in a strong electric field, ruthenium oxide does not migrate.

The first aspect and the second aspect described above can be applied to the ion generating unit described below. Specifically, there is provided such an ion generating unit, which includes the ion generating element of the first or second solution above, and the ion generating element also includes a set on the insulating substrate, and the linear electrode is set On the high-voltage electrode, the ion generating unit also includes a first connection terminal connected to the high-voltage electrode and having a fixed part that can be connected to a first lead, and a first connection terminal that is connected to the ground electrode and has a fixed part that can be connected to a second lead. The second connection terminal, and a chamber that can accommodate the ion generating element, the first connection terminal and the second connection terminal. The first solution and the second solution are also applicable to the ion generating device as described below, specifically, such an ion generating device is provided, which includes the ion generating device according to the above first or second solution The generating element also includes a high-voltage power supply that generates negative voltage.

The ion generating unit can also be applied to the ion generating device as described below. Specifically, such an ion generating device is provided, which includes lead wires respectively connected to the first connection terminal and the second connection terminal, and generates The high-voltage power supply of negative voltage also includes the ion generating unit as claimed in claim 9 .

Beneficial Effects of the Invention

According to the ion generating element, ion generating unit and ion generating device of the present invention, since the tail ends of the two extension parts are connected, or the distance between the tail ends of the two extension parts is small, the linear electrode is not easy to be touched by fingers Therefore, the safety of the ion generating element, the ion generating unit and the ion generating device is improved.

Brief description of the drawings

Fig. 1 is the exploded perspective view of the ion generating device of embodiment one;

Fig. 2 is the external schematic diagram of this ion generating device;

Fig. 3 is a schematic plan view of the ion generating element contained in the ion generating device shown in Fig. 1;

Fig. 4 is the schematic plan view of the ion generating element of embodiment two;

Fig. 5 is the schematic plan view of the ion generating element of embodiment three;

Fig. 6 is a schematic plan view of another ion generating element of the third embodiment;

Fig. 7 is an exploded perspective view of an ion generating device in the prior art.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the ion generating element, ion generating unit and ion generating device of the present invention will be described below with reference to the accompanying drawings.

Embodiment one

FIG. 1 is an exploded perspective view of an ion generating device 1 , and FIG. 2 is an external schematic view showing the appearance of the ion generating device 1 . As shown in Figure 1, the ion generating device 1 includes a lower resin cover 2, an upper resin cover 3, an ion generating element 4, a first connection terminal 5a, a second connection terminal 5b, lead wires 7 and 8, a high voltage power supply (not shown in the figure) Shows). The lower resin cover 2, the upper resin cover 3, the ion generating element 4, the first terminal 5a, and the second terminal 5b together form an ion generating unit.

The lower resin housing 2 has an air inlet 21 located on the side wall 2a at one end thereof, and an air outlet 22 located on the side wall 2b at the other end thereof, and the lower resin housing 2 also has a fixed arm located at the front side wall 2c thereof. twenty three.

The upper resin cover 3 has an air inlet (not shown) on the side wall 3a at one end, and an air outlet 32 on the side wall 3b at the other end. Two buckles 31 on the side wall 3c. When the buckle 31 is buckled into the fixed arm 23 of the lower resin cover 2, the upper resin cover 3 and the lower resin cover 2 are tightly combined to form a ventilated resin chamber. The ion generating element 4 , the first connection terminal 5 a and the second connection terminal 5 b are installed in a chamber defined by the upper resin case 3 and the lower resin case 2 .

As shown in FIG. 3 , the ion generating element 4 includes an insulating substrate 41 , a ground electrode 42 , a high voltage electrode 43 , an insulating film 44 , and a linear electrode 45 . Wherein, the insulating substrate 41 is a sheet-like component, and includes a main body part 41a and a pair of extension parts 41b and 41c, the high-voltage electrode 43 is arranged on the main body part 41a, and the linear electrode 45 passes through it. The starting end is installed on the main body part 41a by welding with the high voltage electrode 43, and the end of the linear electrode 45 protrudes from the main plane direction of the main body part 41a. The wire electrode 45 is an extremely fine wire with a diameter of 100 μm or less, and its longitudinal elastic modulus can reach 2500 N/mm ² or more, which can be steel wire, tungsten wire, stainless wire or titanium wire, etc.

The extensions 41 b and 41 c extend from the main body 41 a and are located on two sides of the end of the wire electrode 45 , with a certain distance between them and the wire electrode 45 . The tail ends of the extensions 41b and 41c are connected, specifically, on the plan view plane, the extensions 41b and 41c make the linear electrode 45 between them, and the two are approximately parallel to the linear electrode; in addition, the extensions The tail ends of 41b and 41c are connected to each other on the extension line of the linear electrode 45, that is, a through hole passing through the main surface of the insulating substrate is formed, and the end of the linear electrode 45 is located in the through hole.

The ground electrode 42 has a pair of legs 42a and 42b respectively provided on the main surfaces of the extensions 41b and 41c, which are substantially parallel to the linear electrode 45 and connected at the tail ends of the extensions 41b and 41c. The insulating film 44 is provided on the surface of the ground electrode 42 so as to cover the ground electrode 42 but not cover the corresponding portion of the connection portion 42c connected to the second connection terminal 5b. The insulating film 42 is formed of materials such as silicone resin or glass glaze. The ground electrode 42 has an impedance of about 50 MΩ, and is a ruthenium oxide paste or carbon paste material, among which ruthenium oxide is the most suitable material because it does not migrate even if a strong electric field is applied thereto. The ground electrode 42 is formed by applying, for example, the above-mentioned paste material to the insulating substrate 42 followed by firing.

Both the first connection terminal 5a and the second connection terminal 5b include a fixed portion 51 and a foot portion 52, the fixed portion 51 of the first connection terminal 5a fits with the fixed portion 33, and the fixed portion 51 of the second connection terminal 5b fits with the fixed portion 52. The portion 34 fits, and the fixing portions 33 and 34 are provided on the upper surface 3d of the upper resin case 3 . The leg portion 52 of the first connection terminal 5 a is connected to the connection portion 43 a of the high voltage electrode 43 , and the leg portion 52 of the second connection terminal 5 b is connected to the connection portion 42 c of the ground electrode 42 .

One end 7a of the high-voltage lead wire 7 is inserted into a hole formed on the front surface of the fixed part 33 of the upper resin housing 3, and the core wire 71 is in contact with the fixed part 51 of the first connection terminal 5a and is electrically connected. Similarly, one end 8a of the grounding wire 8 is inserted into the hole formed on the front surface of the fixing portion 34, and the core wire 81 contacts and is electrically connected to the fixing portion 51 of the second connection terminal 5b.

The high-voltage lead 7 is connected to the negative output end of the high-voltage power supply, and the ground lead 8 is connected to the ground output end of the high-voltage power supply. A high voltage power supply provides a negative DC voltage, but it can also provide an AC voltage superimposed with a negative bias DC voltage. The ion generating device 1 can be combined in air filters or air-conditioning equipment and other equipment, wherein the high-voltage power supply is arranged on the power circuit of the air filter, and the ion generating device is arranged on the air blast channel, so that the air filter and other devices Air with negative ions can be blown out.

The ion generating device 1 having the above-mentioned structure can generate negative ions at a voltage of -1.3KV to -2.5KV, that is, when a negative voltage is provided to the linear electrode 45, a negative ion is generated between the linear electrode 45 and the ground electrode 42. With a strong electric field, the medium at the end of the wire electrode 45 is broken down and reaches a corona discharge state. At this time, the molecules around the end of the wire electrode 45 enter a plasma state and are decomposed into positive ions and negative ions. Positive ions in the air are absorbed by the linear electrodes 45, so that only negative ions remain.

According to the ion generating device 1 configured as described above, since the extensions 41b and 41c are connected to each other, fingers cannot easily touch the linear electrode 45 through the air outlets 22 and 23, thereby improving the safety of the ion generating device 1 , Moreover, since the ground electrode 42 is arranged to surround the linear electrode 45, an electric field can be more concentratedly formed between the linear electrode 45 and the ground electrode 42, thereby generating negative ions more efficiently.

In addition, since the linear electrode has a longitudinal elastic coefficient of 2500 N/mm ² or more, the linear electrode 45 is not easily bent, and even when an external force is applied to the linear electrode 45, the linear electrode 45 easily returns to its original shape. shape. Therefore, the linear electrode 45 is less likely to deviate from the original position.

Embodiment two

4 is a schematic plan view of the second embodiment of the ion generating element. In the ion generating element 4 of the first embodiment, the extensions 41b and 41 are connected. However, in the ion generating element 4A of this embodiment, the extensions 61b and 61c Not connected. Specifically, the distance between the tail end of the extension part 61b and the tail end of the extension part 61c is smaller than the distance between other parts of the extension part 61b and other parts of the extension part 61c, and the distance between the tail end of the extension part 61b and the extension part The distance L between the tail ends of 61c is preferably 3 mm or less. In addition, the distance between the end of the leg 42a and the end of the leg 42b of the ground electrode 42 is also preferably smaller than the distance between the other parts of the two.

As mentioned above, since the distance between the tail end of the extension part 61b and the tail end of the extension part 61c is smaller, fingers can be prevented from touching the linear electrode 45 . In addition, because the distance between the end of the pin 42a and the end of the pin 42b is smaller than the distance between the other parts of the two, the distance between the ground electrode 42 and the linear electrode 45 is small, thereby generating a high-intensity electric field. Therefore, it can be more efficient. generate negative ions.

It should be noted that, in this embodiment, the tail ends of the extension parts 61b and 61c refer to the parts adjacent to the tail ends of the extension parts 61b and 61c, especially the parts that extend farther than the ends of the linear electrodes 45 .

Embodiment Three

5 and 6 are schematic plan views of ion generating element 4B and ion generating element 4C in Example 3, respectively. In the first embodiment and the second embodiment, the insulating film 44 covers the surface of the ground electrode 42 of the ion generating elements 4 and 4A, but does not cover the part of the connection part 42c. However, in the third embodiment, the insulating film 44 covers the surfaces of the ground electrodes 42 of the ion generating elements 4B and 4C except for the tail end 42d of the ground electrode 42 opposite to the end of the linear electrode 45 and the portion of the connecting portion 42c. , that is, the tail end 42d is exposed from the insulating film 44.

As described above, since the tail end 42d of the ground electrode 42 is not covered by the insulating film 44, current leakage occurs between the ground electrode 42 and the linear electrode 45, thereby generating a trace amount of ozone along with ions. It should be noted that the current leakage can be controlled by changing the area or position of the tail portion 42d of the ground electrode 42 exposed from the insulating film 44, thereby controlling the amount of ozone generated.

The present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the scope of the present invention. For example, the number of linear electrodes included in the ion generating element is not limited to one, but can include two or more wire electrodes. It should be noted that if two or more linear electrodes are arranged too closely, the electric field distribution will be disturbed and the discharge efficiency will be reduced. Therefore, the distance between the linear electrodes needs to be carefully considered.

Industrial Applicability

As mentioned above, this invention is applicable to an ion generating element, an ion generating unit, and an ion generating apparatus, Especially this invention can prevent a finger from touching a linear electrode.

Claims (11)

1, a kind of ion generating device comprises insulated substrate, wire electrode and grounding electrode, it is characterized in that, described insulated substrate comprises:

Main part, described wire electrode is arranged on this main part, and the end of described wire electrode with stretch out from main part;

Two from the extended extension of described main part, and these two extension are positioned at the both sides of described wire electrode end and separated by a distance with this wire electrode, and these two extension are provided with described grounding electrode; The tail end of described two extension joins.

2, ion generating device according to claim 1 is characterized in that, the described grounding electrode that is arranged on described two extension joins at the tail end of described two extension.

3, a kind of ion generating device comprises insulated substrate, wire electrode and grounding electrode, it is characterized in that, described insulated substrate comprises:

Main part, described wire electrode is arranged on this main part, and the end of described wire electrode stretches out from this main part;

Two from the extended extension of described main part, and these two extension are positioned at the both sides of described wire electrode end and separated by a distance with this wire electrode, and these two extension are provided with described grounding electrode;

Distance between the tail end of described two extension is less than the distance between other parts of described two extension.

4, ion generating device according to claim 3 is characterized in that, the distance between the tail end of described two extension is less than or equal to 3mm.

5, according to any described ion generating device of claim 1 to 4, it is characterized in that the diameter of described wire electrode is less than or equal to 100 μ m.

6, according to any described ion generating device of claim 1 to 5, it is characterized in that insulation film covers the surface of described grounding electrode.

7, ion generating device according to claim 6 is characterized in that, described insulation film covers the surface of described grounding electrode, but does not cover in the described grounding electrode the terminal corresponding part with described wire electrode.

8, according to any described ion generating device of claim 1 to 7, it is characterized in that described grounding electrode is a resistive element.

9, a kind of ion generating unit is characterized in that, comprising:

According to any described ion generating device of claim 1 to 8, this ion generating device also comprises the high-field electrode that is arranged on the described insulated substrate, and described wire electrode is arranged on this high-field electrode;

First binding post, this first binding post is connected with described high-field electrode, and has a standing part that can connect lead-in wire;

Second binding post, this second binding post is connected with described grounding electrode, and has a standing part that can connect lead-in wire; And

Room, this room can hold described ion generating device, described first binding post and described second binding post.

10, a kind of ion generating device is characterized in that, comprising: according to any described ion generating device of claim 1 to 8, and the high voltage source of generation negative voltage.

11, a kind of ion generating device is characterized in that, comprising:

High voltage source, this high voltage source have the lead-in wire that is connected with first binding post, second binding post respectively, and this high voltage source produces negative voltage;

Ion generating unit according to claim 9.

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