JP6723682B2 - Negative ion generator - Google Patents

Description

The invention of this application relates to the configuration of a discharge-type negative ion generator using a discharge electrode.

When negatively charged ions, that is, negative ions (also called anions or negative ions), act on the human body, the ionization amount of sodium and calcium in the blood increases, and minerals are efficiently used to improve blood pH. To be done. As a result, the acidified human body can be maintained in a weakly alkaline state and can be changed into a healthy body. For this reason, recently, such negative ions have come to be widely used in, for example, air purifiers, air conditioners, electric potential treatment devices and the like (see, for example, Patent Documents 1 and 2).

There are various substances that have the function of generating negative ions, such as natural ores (tourmaline, etc.) and processed products of plants (charcoal, bamboo charcoal, etc.), natural products such as foliage plants, natural products, and corona discharge. , There are things that utilize physical phenomena such as water droplet breakup.

Natural ores (tourmaline, etc.), processed products of plants (charcoal, bamboo charcoal, etc.), and static plants such as houseplants cannot continuously generate a large amount of negative ions, and air cleaners and air Since it cannot be incorporated in an electric device such as a harmony device or a potential treatment device, it is difficult to adopt it as a negative ion generator in those devices.

Further, the water drop splitting utilizing the so-called Leonard effect has a drawback that the device becomes large in scale and lacks quietness in addition to the increase in air humidity. In addition, water stains tend to collect and lack maintainability. Therefore, generally, a discharge method using corona discharge is often used.

A negative ion generator using corona discharge includes a discharge electrode, a high voltage generating means for applying a high voltage to the discharge electrode, a ground electrode corresponding to the discharge electrode, and a blowing means for flowing air to the discharge electrode portion. , Each of them is properly stored and installed in the main body of the apparatus.

When a high voltage necessary and sufficient for generating corona discharge is applied to the discharge electrode from the high voltage generating means, corona discharge occurs. A negative corona occurs when electrons flow from the electrode into the air, and a positive corona occurs when electrons flow from the air to the electrode. The flow of electrons due to these discharges forms an ion flow and ionizes the air blown from the blowing means. Then, this ionized air is supplied to the room, and the entire air in the room is ionized (the amount of ions is enriched).

The amount of ion flow generated depends on the voltage value applied to the discharge electrode, the structure of the discharge electrode, the humidity of the air, the distance from the ground electrode, and the like. As the structure of the discharge electrode, various forms such as a plate-shaped one, a rod-shaped one, a wire-shaped one and a needle-shaped one are adopted, but the needle-shaped electrode having a sharp tip is more preferable. , It is possible to generate corona discharge at a lower voltage, and has the advantage of high ion flow generation efficiency. (In the ion generator for the purpose of static electricity countermeasures, use a needle-shaped discharge electrode with a sharp tip. See Non-Patent Document 1 as an introduction of this).

JP, 06-142217, A JP, 2005-296441, A

Masayuki Nizawa "Static electricity countermeasure manual" Ohmsha Co., Ltd., published on November 20, 1990, pages 126 to 127

As described above, the amount of ion flow generated depends on the voltage applied to the discharge electrode, the structure of the discharge electrode, the humidity of the air, the distance from the ground electrode, etc. The voltage applied to the discharge electrode can be adjusted to a desired value, and the discharge electrode having a needle-like structure can be used. Also, the distance to the ground electrode can be designed by designing an appropriate distance based on experimental results. Regarding the humidity of the air, it is sufficient if it is based on the humidity at that time.

Therefore, if the negative ion generator is configured to satisfy such conditions, it is possible to realize the negative ion generator having a high negative ion generation efficiency.

However, the needle-shaped discharge electrode has a problem that the physical properties of the tip of the electrode change due to the discharge, and when a certain period of time elapses from the beginning of use, the amount of ion flow generated is considerably reduced.

In the case of a needle-shaped discharge electrode, if the applied voltage is the same, the sharper the tip of the electrode is, the stronger the electric field is and the more the amount of ions is generated. Since the molecules collide with each other, the electrodes are destroyed and the sharpness of the tip is lost, so that the amount of generated ions also decreases as the discharge progresses. This phenomenon becomes particularly noticeable when a large number of free electrons exist near the electrode.

However, this problem can be solved, for example, by forming the electrode material with a material having high strength such as stainless steel.

On the other hand, in addition to this, in order to increase the amount of generated ions, adoption of a configuration in which a plurality of, for example, two discharge electrodes are arranged in parallel at a predetermined interval in the air passage is also under study. In this case, basically, twice the amount of generated ions is expected as compared with the case of one discharge electrode.

However, according to the experiment, it was not so, and it was found that the amount of ions generated in each discharge electrode itself was rather reduced as compared with the case of one. This phenomenon is the same when the number of discharge electrodes is three or more, and it has been found that the smaller the distance between the discharge electrodes is, the larger the reduction amount is.

This is because the adjacent electric discharge electrodes are affected by each other's electrodes and the electric field strength with the earth electrode (the electric field strength of each individual discharge electrode) becomes unstable and This is because the proper discharge potential in relation to the electrodes is no longer maintained and the flow of electrons from the electrode part into the air and the flow of electrons from the air into the electrode part are disturbed. It is considered that the presence of the Karman vortex facilitates the generation of the Karman vortex, disturbs the air flow in the air passage to form a turbulent flow, and does not form an appropriate air flow (laminar flow).

Even if the high voltage is applied to each discharge electrode at the same timing, there are differences in the degree of deterioration of the electrode parts and differences in the flow of air, so the timing of the discharge that actually occurs in each discharge electrode part is not always the same. do not do. That is, it is difficult to accurately control the discharge timing of the adjacent discharge electrodes among the plurality of discharge electrodes. Therefore, the electric field strength of each discharge electrode is likely to change, and the flow of air flowing through each discharge electrode portion is easily disturbed by the discharge.

The present invention has been made to solve such a problem. Even when two first and second discharge electrodes are arranged in parallel, one electrode is not affected by the counterpart electrode. By making it possible to maintain an appropriate electric field strength and a stable air flow as at the time, it is possible to effectively increase the amount of ions generated according to the number of installations. It is intended to provide a negative ion generator.

In order to solve the above problems, the present invention comprises the following problem solving means.

(1) Means for Solving the Problem of the Invention of Claim 1 In the means for solving the problems of the present invention, the device main body having a first air passage from the rear side air intake port to the front side air outlet port, and the device at the central portion. a second air passage communicating with the first air passage of the main body, removable and mounted for electrical connection to said air outlet of said first air passage of the device body separate consists an electrode cartridge unit structure, to the electrode cartridge, said second air passage, the first being arranged with a predetermined interval in the width direction of the second air passage, the Two needle-shaped discharge electrodes and the second air passage are divided into left and right, a partition plate provided between the first and second needle-shaped discharge electrodes, and the second air passage. the first, while the second needle-like discharge electrodes of the electrode portions earth electrodes provided corresponding to the orthogonal direction to the tip are provided, in the apparatus main body, the apparatus main body in the first Blower means for flowing air through the blower passage and the second blower passage of the electrode cartridge, boosting means for boosting the voltage of the AC power source to a high negative voltage equal to or higher than a predetermined voltage, and high negative voltage boosted by the boosting means. the converted into pulsating voltage a the first, negative ion generator pulsating voltage generating means for applying the that provided in the second needle-like discharge electrodes,
The electrode cartridge, mutually dividable, the central portion to the second air passage side cartridge case after an opening for forming the same in a central portion said second air passage and for forming with two of the cartridge case of the front cartridge case having an opening, dividing said second air passage of the electrode cartridge to the right and left in the front cartridge case, said rear cartridge case and the front cartridge case above in the state of being bonded integrally to each other first, with a partition plate is provided you positioned between the second needle-like discharge electrodes cross, inserted the memory substrate for device control to the rear cartridge case A memory substrate storage case for detachably storing is provided, and the rear cartridge case and the front cartridge case are coupled and integrated with each other, and the first cartridge is provided between the rear cartridge case and the front cartridge case. the second needle-like discharge electrodes and one ground electrode that are fixed in a state located in the second air passage of the electrode cartridge memory substrate for device control in the memory substrate storage case of the rear-side cartridge case The feature is that it can be inserted and removed freely.

For SUMMARY of the present invention, as a whole first, an apparatus body having a first air passage extending from the rear side air inlet on the front side air outlet, a first air passage of the apparatus main body in the central portion An electrode cartridge having an independent unit structure that has a second air passage communicating with the air blower, is detachably attached to the air outlet of the first air passage of the apparatus body, and is electrically connectable thereto . It consists of two parts .

In the electrode cartridge , the second air passage communicating with the first air passage of the apparatus body and the second air passage arranged in parallel with each other in the width direction of the second air passage with a predetermined gap therebetween. 1, a second needle-like discharge electrodes, to divide the upper Symbol second air passage to the left and right, the first, and the partition plate provided between the second needle-like discharge electrodes cross the upper Symbol the first second air passage, the ground electrodes provided corresponding to the orthogonal direction is provided on the electrode tip of the second needle-like discharge electrodes.

On the other hand, in the device body, air blowing means for flowing air through the first air passage of the device body and the second air passage of the electrode cartridge, and the voltage of the AC power supply to a high negative voltage of a predetermined voltage or more. There are provided boosting means for boosting and pulsating voltage generating means for converting the high negative voltage boosted by the boosting means into a pulsating voltage and applying it to the first and second needle-shaped discharge electrodes.

Therefore, when the electrode cartridge is attached to the air outlet of the device body, air is blown into the second air passage of the electrode cartridge by the air blower via the first air passage of the device body. Is washed away. Further, in the second air passage of the electrode cartridge, two needle-shaped discharge electrodes, a first needle and a second needle, are arranged side by side at a predetermined interval in the width direction thereof. A partition plate is provided between the first and second two needle-shaped discharge electrodes to divide the second air passage into left and right.

In the above configuration, in order to discharge electrode in the second air passage of the electrode cartridge is constituted by the first, second of the two needle-like discharge electrodes, the first, second two Since a larger number of ion streams are formed by the discharge at the needle-shaped discharge electrode than in the case of the discharge by one needle-shaped electrode, the generation amount of negative ions as a whole is increased.

Next, the first and second needle-shaped discharge electrodes are each provided with a partition plate that divides the second air passage of the electrode cartridge into left and right parts between them. The discharge spaces are separated from each other to form independent air passages, and the electric field strength between the needle-shaped discharge electrode and the ground electrode is affected by the existence of mutual electrodes and the discharge action of the mutual electrodes. Stable electric field strength will always be maintained without being affected.

Further, in the case of the means for solving the problems of the present invention, in addition to this , in the device body, a boosting means for boosting the voltage of the AC power source to a high negative voltage of a predetermined voltage or more, and a high negative voltage boosted by the boosting means. A pulsating voltage generating means for converting the voltage into a pulsating voltage and applying it to the first and second needle-shaped discharge electrodes is provided, and the high negative voltage boosted by the boosting means is pulsating voltage. It is adapted to be applied to the above-mentioned first and second two needle-shaped discharge electrodes. Therefore, each of the first and second needle-shaped discharge electrodes can always perform stable discharge according to the application timing of the pulsating voltage applied.

Further, the flow of the air flowing through the second air passage is separated from each other by the partition plate, and becomes a stable laminar flow in the independent air passage portion. Existence and the discharge of the adjacent discharge electrode do not disturb the discharge, and the flow becomes more stable.

As a result of these, the first and second needle-shaped discharge electrodes described above generate more stable discharges in their respective discharge electrode portions, and a more stable ion flow is generated. Therefore, unlike the conventional device, the amount of negative ions generated is effectively increased substantially according to the number of discharge electrodes.

Moreover, in the case of the present invention, each of the second air passage, the first and second needle-shaped discharge electrodes, the partition plate, and the ground electrode configured as described above is provided, and the first main body of the apparatus main body is provided. Opening for forming the second air passage in the central portion of the electrode cartridge that is detachably attached to the air outlet of the air passage and is electrically connectable Ri Contact comprise two cartridge case of the front cartridge case having an opening for forming the second air passage to the same central part and side cartridge case after having the above to the front cartridge case dividing the air passage of the electrode cartridge to the right and left, the first in a state where the mutually coupled integrally the rear cartridge case and the front cartridge case, you positioned between the second needle-like discharge electrodes cross the partition A plate is provided, and a memory substrate storage case that stores the device control memory substrate in a removable manner is provided in the rear cartridge case, and the rear cartridge case and the front cartridge case are mutually connected. The first and second needle-shaped discharge electrodes and the ground electrode are fixed between the rear cartridge case and the front cartridge case in a state of being located in the second air passage of the electrode cartridge. On the other hand, the memory substrate storage case of the rear cartridge case is removably accommodated in the memory substrate storage case.

Therefore, in the configuration, the electrode cartridge including the second air passage, the first and second needle-shaped discharge electrodes, the partition plate, and the ground electrode, which have the above-described beneficial effects, is provided. However, as an independent electrode cartridge having an apparatus control unit function, it can be independently attached to and detached from the air outlet of the apparatus main body. Moreover, the electrode cartridge is composed of two cartridge cases, that is, a rear cartridge case and a front cartridge case that are separable from each other, and the rear cartridge case and the front cartridge case are connected and integrated with each other. Since the first and second needle-shaped discharge electrodes and the ground electrode are fixed between the cartridge case and the front cartridge case in a state of being located in the second air passage of the electrode cartridge, The fixed state becomes stable. Further, it becomes easy to replace the first and second needle-shaped discharge electrodes and ground electrodes, the device control memory board, and other electric parts.

As a result of the above, according to the anion generator of the present invention, it is possible to generate an effective amount of anions corresponding to the number of the installed first and second discharge electrodes. It becomes easy to replace the second needle-shaped discharge electrode and the memory board, and to replace and repair other electric parts.

It is the figure seen from the front side diagonal right upper of the anion generator concerning the form for carrying out the anion generator of the invention of this application. It is the figure seen from the back side diagonally right upper part of the device. FIG. 3 is an exploded view of the same device seen from diagonally above and to the front. FIG. 3 is an exploded view of the same device seen from diagonally above and to the rear side. It is the figure which looked at the electrode cartridge of the same device from the diagonally upper right on the front side. It is the figure which looked at the electrode cartridge of the device from the front side. It is the figure which looked at the electrode cartridge of the device from the back side. It is the figure which looked at the electrode cartridge of the device from the right side. It is the figure which looked at the back side composition of the front side cartridge case by removing the back side cartridge case of the electrode cartridge of the device. It is the exploded view which looked at the electrode cartridge of the same device from the diagonally right upper side on the front side. It is a block circuit diagram which shows the structure of the discharge control circuit in the main body of the same apparatus.

Next, a mode for carrying out the negative ion generator of the invention of this application will be specifically described.

1 to 10 show a configuration of an apparatus main body portion of a negative ion generator according to one mode for carrying out the negative ion generator of the invention of this application, and FIG. 11 shows a control circuit in the apparatus main body. The structure of a part is shown.

<Overall configuration of device body>
First, FIGS. 1 to 4 show the overall configuration of the main body of the negative ion generator, FIG. 1 is a view of the front side of the apparatus main body seen obliquely from the upper right, and FIG. FIG. 3 is an exploded perspective view of the apparatus body with the front cover and the electrode cartridge portion removed, and FIG. 4 is an exploded perspective view of the apparatus body with the filter cover and activated carbon storage box portion removed. It is a figure.

That is, the apparatus main body of this negative ion generator is a cross-section base provided with an operation unit (power switch) 1A, an operation unit (fan air volume strong/medium/weak switch) 1B, and a display unit (display of voltage applied to electrodes) 2. A shaped base portion 3 and a circular air suction port 4, a first air passage 5 a , and a square air outlet port 6 are formed on the upper portion of the base portion 3 from the back side to the front side. It is composed of a main body portion 7 that is open.

The base part 3 and the main body part 7 are integrally molded with each other on the front side case 37F in which the base part 3 side and the main body part 7 side are integrally molded with each other, and the base part 3 side and the main body part 7 side are integrally molded with each other. The rear case 37R is integrally engaged with each other in the front-rear direction.

The circular air inlet 4 is provided on the main body 7 side portion of the rear case 37R, and the square air outlet 6 is provided on the main body 7 side portion of the front case 37F. A first air passage 5a is provided between the air blower 4 and the air outlet 6 (see FIGS. 1 to 3).

Further, a filter cover 12 having a grill structure having a storage function of the activated carbon storage box 11 is detachably engaged with a rear surface portion of the circular air suction port 4 on the main body portion 7 side portion of the rear case 37R. It is like this.

A filter is provided in the filter cover 12 over the entire grill portion 12a, and an activated carbon storage box 11 is provided in the lower portion on the front side of the filter. The activated carbon having a pack structure is stored in the activated carbon storage box 11 (see FIG. 4).

A blower fan (a blower fan F in FIG. 11, which will be described later) is provided as a blower at the rear side portion of the rectangular air outlet 6 on the main body 7 side portion of the front case 37F. The electrode cartridge 13 having the first and second needle-shaped discharge electrodes 14a and 14b and the plate-shaped earth electrode 15 is attached to and detached from the front side portion (not shown in FIGS. 1 to 10). Engagement is possible. Further, a front cover 8 having a grill structure, which constitutes a final air blowing surface, is detachably engaged with the front side of the electrode cartridge 13.

The front cover 8 is adapted to be detachably engaged with the front side portion of the rectangular air outlet 6 on the main body 7 side portion of the front side case 37F in a sliding state from above. In the engaged state, the electrode cartridge 13 is entirely covered (see FIG. 3).

In the negative ion generator having such a configuration , when the blower fan F that is the blower means is driven, the grill portion 12a of the filter cover 12 on the rear side, the filter, the activated carbon in the activated carbon storage box 11, the air air is sucked from the suction port 4, a first air passage 5 a, through the blower fan F, the air is passed through the second air passage 5b portions to be described later of the electrode cartridge 13, the electrode cartridge 13 first, second needle-like discharge electrodes 14a, negative ions by discharge 14b partially enriched, is blown from the grill portion 8a part of the front cover 8 to the outside (the room).

<Structure of electrode cartridge part and its action>
Next, FIG. 5 and FIG. 6 show the configuration of the front side of the electrode cartridge 13, FIG. 7 shows the configuration of the back side, FIG. 8 shows the configuration of the side surface side, and FIG. 9 and FIG. 10 show the internal configuration. , Respectively.

That is, the electrode cartridge 13 to enrich the negative ions in the air flowing through the second air passage 5 b, for example, as shown in FIGS. 5 to 10, rectangular opening 17a for blowing inwardly respectively, the 16a engage the cartridge case 17, 16 front and rear two with each other, first, second two needle at the bottom portion of the second air passage 5 b formed therebetween Discharge electrodes 14a, 14b and a plate-shaped ground electrode 15 provided on the upper portion (see FIGS. 9 and 10).

In the electrode cartridge 13 portion, the upstream side of the air flow is given priority, and the upstream side of the air flow is given a small number, not the front-back relation of the apparatus main body.

The first and second needle-shaped discharge electrodes 14a and 14b are located at a lower portion of the opening 16a of the rear cartridge case 16 and extend upward from below. The opening 16a is provided at a lower portion of the ceiling piece 16c and extends in the left-right direction, and is provided in a shape orthogonal to the T-shape while maintaining a predetermined discharge distance therebetween.

Both the front side cartridge case 17 and the rear side cartridge case 16 are configured to have air blowing openings 17a and 16a corresponding to the air outlet 6 of the front side case 37F of the apparatus body inside. However, although the shape and size of the rear side (air flow upstream side) opening surface of the opening 16a of the rear cartridge case 16 is the same as the shape and size of the air outlet 6 of the front case 37F of the apparatus body. The shape and size of the front side (air flow downstream side) opening surface of the opening 16a is formed longer than the shape and size of the rear side opening surface, and the lower surface 16b of the opening 16a is It is a descending inclined surface that descends at a predetermined gradient from the rear side (air flow upstream side) to the front side (air flow downstream side).

The first and second needles are provided on the lower surface 16b of the opening 16a, which is a descending inclined surface descending at a predetermined gradient from the rear side (air flow upstream side) to the front side (air flow downstream side). -Shaped discharge electrode fitting portions 18a and 18b for installing the discharge electrodes are provided. The discharge electrode fitting portions 18a and 18b are provided with a discharge electrode fitting hole penetrating in the vertical direction in the lower surface 16b portion of the opening 16a, and the first and second discharge electrode fitting holes are provided on both left and right sides of the discharge electrode fitting hole. It is configured by providing triangular ribs that support both the left and right sides and the rear side of the needle-shaped discharge electrodes 14a and 14b.

Below the discharge electrode fitting hole, a base side terminal 23 and a pressing side terminal 24 for sandwiching a lower end side copper material portion c of the first and second needle-shaped discharge electrodes 14a, 14b described later are sandwiched. Is provided, and a high-voltage power supply is applied by sandwiching a later-described lower-end side copper material portion c of the first and second needle-shaped discharge electrodes 14a and 14b between them. ing. One end 23 a of the base-side terminal 23 converts a high negative voltage (−6 Kv) from a high voltage unit (boosting means) 102, which will be described later, into a pulsating voltage via a pulsating voltage generating unit (pulsating voltage generating means) 103. It is connected to the high-voltage power supply terminal 29 supplied above (see FIG. 9).

On the other hand, the other ground electrode 15 is fixed to the lower surface of the upper ceiling piece 16c of the opening 16a of the same rear cartridge case 16 by extending in the entire left-right direction and fixing the one end side terminal portion 15a. It is connected to one end side terminal portion 26a of the member 26, and is connected to a ground terminal 28 for connecting the other end side connection terminal 26b portion to an external ground wire via a harness member 26 of a predetermined length (Fig. 9). The ground terminal 28 is detachably connected to the main body side via a connector part 28a provided on the back side of the rear cartridge case 16, and by the same connection, the main body part shown in FIG. It is adapted to be connected to the ground connector 11 on the rear side of the side base part 3.

Further, a board storage case 31 that stores the control memory board 30 in a removable manner is provided inside the opening 16a of the same rear cartridge case 16 in a lateral direction. Is installed (see FIG. 9). The main body side terminal portion of the substrate storage case 31 is also detachably connected to the main body portion side via a connector portion 31a provided on the back side of the rear cartridge case 16.

The shape and dimensions of the opening 17a of the front side (air flow downstream side) cartridge case 17 are such that the shape and dimensions of the rear side (air flow upstream side) opening surface are in front of the opening 16a of the rear side cartridge case 16. Although the shape and dimensions of the opening side (air flow downstream side) are the same, the shape and dimensions of the front side (air flow downstream side) opening surface are the same as those of the opening 16a of the rear cartridge case 16. The lower side 17b of the opening 17a is formed from the rear side (air flow upstream side) to the front side from the rear side (air flow upstream side). It is a descending inclined surface that descends at a predetermined gradient toward (on the downstream side of the air flow).

Then, at the rear edge of the lower surface 17b of the opening 17a, which is a descending inclined surface descending at a predetermined gradient from the rear side (air flow upstream side) to the front side (air flow downstream side), the rear cartridge Discharge electrode fixing members 19a and 19b corresponding to the fitting portions 18a and 18b for installing the first and second needle-shaped discharge electrodes of the case 16 are provided. The discharge electrode fixing members 19a and 19b are fitted (internally fitted) between the triangular ribs on both sides of the discharge electrode fitting holes of the fitting portions 18a and 18b for installing the discharge electrode, and the discharge electrode fitting members 19a and 19b are fitted. A convex rib structure having a T-shaped cross section that presses the front side of the fitting portions of the first and second needle-shaped discharge electrodes 14a and 14b fitted in the hole portions as shown in FIG. (See FIG. 10), for example, in the state where the front side cartridge case 17 and the rear side cartridge case 16 are integrally engaged with each other as shown in FIG. 8, a convex vertical rib portion extending in the vertical direction is formed. Then, the front side of the first and second needle-shaped discharge electrodes 14a, 14b is pressed backward with a predetermined pressure.

As a result, for example, the vertical positions of the first and second needle-shaped discharge electrodes 14a and 14b fitted in the discharge electrode fitting hole portion in the state as shown in FIG. The height of the electrode portion) is securely positioned and fixed in a stable state (see FIG. 5). Then, as described above, the electrode cartridge 13 configured as a single independent unit structure is detachably attached to the air outlet 6 portion of the front case 37F of the apparatus main body.

Therefore, in the case of such a configuration, when the necessary electric parts are replaced or a failure occurs due to the consumption of the electrode portions of the first and second needle-shaped discharge electrodes 14a and 14b, the replacement of the memory substrate, and other circumstances. Even when repairing, the electrode cartridge 13 can be easily removed from the main body after the front cover 8 is removed, and the electrode cartridge 13 itself can be easily replaced if necessary. (See Fig. 3). Moreover, the main body portion and the electrode cartridge 13 can be easily attached and detached by utilizing the above-mentioned rear side connector portions 28a, 29a, 31a.

Further, as described above, each of the rear side cartridge case 16 and the front side cartridge case 17 constituting the electrode cartridge 13 has a predetermined width in the front-rear direction, and has a predetermined length by the openings 16a and 17a, respectively. the lower surface of the second air blowing but passage 5 form a b, said second air passage 5 the lower surface 16b of the opening 16a of the rear cartridge case 16 that forms b and opening 16a of the front cartridge case 17 of the As shown in the drawing, each of the 16b has a tapered surface structure in which the rear side opening surface and the front side opening surface have a downward slope of a predetermined inclination angle. The lower surface 16b is formed as a downward slope having a large inclination angle from the upstream side to the downstream side of the air flow compared to the lower surface 17b of the opening 17a of the front cartridge case 17, and the tapered surface having a large downward inclination angle is used. As described above, the discharge electrode fitting portions (triangular ribs) 18a, 18b for installing the first and second needle-shaped discharge electrodes 14a, 14b having the predetermined height in the vertical direction are formed, while the bottom surface position is formed. The convex discharge electrode fixing portions 19a and 19b are provided by using a tapered surface having a low (lower surface 17b position of the opening 17a) and a small downward inclination angle, and thereby (using a difference in gradient and height). As described above, the first and second needle-shaped discharge electrodes 14a and 14b are appropriately provided in a stable state.

At the same time, the openings between the left and right side wall portions of the opening 17 are also formed such that the width of the front opening surface is wider than that of the rear opening surface (see FIG. 6). In this way, the first, second needle-like discharge electrodes 14a, passage diameter of the second air passage 5 b and 14b installation portion is expanded to the horn type, the velocity of the air flow of the discharge electrode portions gradually Become. As a result, the negative ion flow generated by corona discharge is stabilized, and the generation efficiency and enrichment efficiency of negative ions are improved.

In the case of this embodiment, the front-rear width of the front cartridge case 17 is formed to be larger than the front-rear width of the rear cartridge case 16, and the opening thereof is larger than the opening of the rear cartridge case 16. forming a relatively long air blowing through passage.

Further, in the case of this embodiment, the first and second needle-shaped discharge electrodes 14a and 14b are needle-shaped, as shown in, for example, FIG. 9 and FIG. Of the stainless steel material is protected by a protective tube b having a high strength, and the protective tube b is fitted into the discharge electrode fitting holes 18a and 18b of the rear cartridge case 16. Then, the convex discharge electrode fixing portions 19a and 19b are fitted and fixed, and the lower end side c portion of the stainless material is fastened (screw-fastened) to the electrode attaching portion of the base terminal 23 described above by the electrode retainer 24. Attached (see FIG. 10).

Therefore, not only is the installation state of the first and second needle-shaped discharge electrodes 14a, 14b to which a high-voltage power source is applied stable, but also the first and second after the electrode cartridge 13 is removed as described above. It is easy to remove, replace, and attach the needle-shaped discharge electrodes 14a and 14b.

On the other hand, the plate-shaped ground electrode 15 is made of, for example, a stainless material, has a length corresponding to the lower portion of the ceiling piece 16c above the opening 16a of the rear cartridge case 16, and has the second air blower. the passage 5 b lower side 1, see the second needle-like discharge electrodes 14a, is disposed so as to correspond to the T-shape with a predetermined discharge distance equal to one another above the 14b (e.g., FIG. 9 ). Then, the second air passage 5 b the lower side of the first, second needle-like discharge electrodes 14a, to give rise to corona discharge between the bottom surface of 14b of the tip and the plate-like ground electrode 15 Accordingly, so as to form a negative ion flow to the air flowing through the second air passage 5 b.

Therefore, first the second air passage 5 b downward, corona discharge between the lower surface of the second needle-like discharge electrodes 14a, 14b of the tip and the plate-like ground electrode 15, the As described above, the ground electrode 15 is plate-shaped and is widely installed over the entire left-right direction of the ceiling piece 16c of the opening 16a. Therefore, only a local region corresponding to the tip electrode portion in a linear direction in the vertical direction is provided. Instead, it will occur widely with some spread to the left and right. As a result, the generation efficiency of negative ions also increases.

Moreover, in this case, the first and second needle-shaped discharge electrodes 14a and 14b are arranged in parallel to the plate-shaped ground electrode 15 at a predetermined interval. Therefore, the amount of negative ions generated is correspondingly increased as compared with the case of one discharge electrode.

<Reduction of negative ion generation efficiency when a plurality of discharge electrodes are provided>
Incidentally, when simply considered, when juxtaposed the two discharge electrodes to the second air passage 5 b as described above, as compared with the one discharge electrode, an ion generation amount of essentially doubles There is expected.

However, as described above, in the case of the configuration in which the first and second needle-shaped discharge electrodes 14a and 14b are simply arranged in parallel in the same one air passage, according to the experiment, However, the amount of ions generated from each discharge electrode itself is rather reduced as compared with the case of one ion. This phenomenon is the same when the number of discharge electrodes is three or more, and the smaller the distance between the discharge electrodes is, the larger the reduction amount is.

This is because the plurality of adjacent discharge electrodes are affected by each other's electrodes, and the electric field strength with the ground electrode 15 (the electric field strength of each individual discharge electrode) becomes unstable. The proper discharge potential in relation to the ground electrode 15 is not maintained, and the flow of electrons from the electrode portion to the air and the flow of electrons from the air to the electrode portion are disturbed. The existence of Karman vortices is likely to occur, the flow of air in the air passage is disturbed and becomes a turbulent flow, and it is considered that an appropriate air flow (laminar flow) is not formed.

In particular, even if the timing of applying the high voltage to each discharge electrode is the same, there are differences in the degree of deterioration of the electrode parts and differences in the air flow, and the timing of the discharge that actually occurs in each discharge electrode part is not always the same. do not do. That is, it is difficult to accurately control the discharge timing of the adjacent discharge electrodes among the plurality of discharge electrodes. Therefore, the electric field strength of each discharge electrode is likely to change, and the flow of air flowing through each discharge electrode portion is easily disturbed by the discharge.

<Improvement of negative ion generation efficiency when a plurality of discharge electrodes are provided>
Therefore, in the configuration of this embodiment, for example, FIGS. 5 to 7, as shown in FIG. 10, first in the second air passage 5 b, second needle-like discharge electrodes 14a, between 14b mutually of the intermediate portion, the vertical and the partition plate 20 extending in the longitudinal direction is provided, by partition plate 20, divides the second air passage 5 b of the electrode cartridge 13 partially substantially two right and left independent air passage (Compartment). The partition plate 20 has a height corresponding to the vertical and front-back widths of the airflow upstream front edge 20a and the opening 17a of the front cartridge case 17, which extend up to the vertical and front-back widths of the opening 16a of the rear cartridge case 16, for example. And an airflow trailing edge portion 20b integrally formed in the opening portion 17a of the front cartridge case 17 and having an anteroposterior width, and the airflow upstream leading edge portion 20a is the rear cartridge case 16 When the front cartridge case 17 and the front cartridge case 17 are integrally combined, the opening 16a of the rear cartridge case 16 extends to the full vertical height and front-rear width, and is fitted between the upper ceiling piece 16c and the lower lower surface 16b. It is supposed to be done.

As a result, each of the first and second needle-shaped discharge electrodes 14a, 14b adjacent to each other has the partition plate 20 interposed at least in the second air passage 5b portion of the electrode cartridge 13 that produces a discharge action. Therefore, the electric field strength with the ground electrode 15 (the electric field strength of each discharge electrode alone) becomes unstable due to the influence of the other side electrode. The proper discharge potential in relation to the ground electrode 15 may not be maintained, and the flow of electrons from the tip side discharge electrode a portion to the air and the flow of electrons from the air to the discharge electrode a portion may be disturbed. And the presence of the adjacent discharge electrodes a and a facilitates the generation of Karman vortices, which disturbs the air flow in the air passage to form a turbulent flow and forms an appropriate air flow (laminar flow). It will not be lost.

As a result, even if the discharge timings of the first and second needle-shaped discharge electrodes 14a, 14b are different due to the difference in the degree of deterioration of the discharge electrode a portion, the difference in the air flow, etc., each discharge electrode a, The electric field strength at the portion a does not change, and the flow of air flowing through the discharge electrodes a and a is not disturbed by the discharge of other electrodes.

Therefore, a more stable discharge is generated in each of the discharge electrodes a and a, and a more stable negative ion flow is generated, and the amount of negative ions generated is also effective depending on the number of discharge electrodes. Will be increased to.

<Structure of discharge control circuit part in device body>
Next, FIG. 11 is a block diagram showing a configuration of a discharge control circuit portion in the negative ion generator.

The discharge control circuit includes an AC adapter 101, which is an AC/DC converter that converts a power supply voltage AC100v to AC240v from a household AC power supply 100 into a DC 12v, and a DC voltage 12v from the AC adapter 101 into a high negative voltage of 6kv. And a high-voltage unit 102 for boosting the voltage, a pulsating voltage generating unit 103 for inputting a high negative voltage 6 kv from the high-voltage unit 102, converting it to a pulsating voltage, and outputting the pulsating voltage, and a predetermined voltage from the pulsating voltage generating unit 103. It is composed of a corona discharge electrode 104 which inputs a high frequency pulsating high negative voltage of 6 kv and efficiently generates a corona discharge.

In the case of this embodiment, the corona discharge electrode 104 is composed of the first and second needle-shaped discharge electrodes 14a and 14b and the ground electrode 15 described above. Then, (−)0 v of the AC adapter 101 is applied to the power supply terminal portion of the ground electrode 15.

Then, using this control circuit, the effective negative ion generation control (corona discharge control) as described above is performed.

In addition, F in FIG. 11 indicates a blower fan, and A indicates an air flow. Although not shown in FIG. 11, a control is actually provided between the AC adapter 101 and the high-voltage unit 102 for adjusting the blow rate (strong/medium/weak) of the blower fan F. A circuit is provided.

1 operating unit, 2 a display unit, 3 base portion, 4 is an air suction opening, 5 a first air passage, 5b and the second air passage, 6 air outlet 7 the main body, 8 is a front cover, 13 is an electrode cartridge, 14a is a first needle-shaped discharge electrode, 14b is a second needle-shaped discharge electrode, 15 is a plate-shaped ground electrode, 16 is a rear cartridge case, and 16a is an opening. Reference numeral 17 is a front cartridge case, 17a is an opening, 18a and 18b are discharge electrode fitting portions, 19a and 19b are discharge electrode fixing members, 20 is a partition plate, 100 is an AC power supply, 101 is an AC adapter, and 102 is a high voltage. A unit, 103 is a pulsating voltage generating unit, and F is a blower fan.

Claims (1)

Has a device body having a first air passage leading to the front side air outlet from the rear side air inlet, a second air passage communicating with the first air passage of the apparatus main body in a central portion, detachable from the air outlet of the first air passage of the apparatus main body, and made an electrode cartridge electrically connectable to attached independent unit structure, to the electrode cartridge, said first The second air passage, the first and the second needle-shaped discharge electrodes arranged in parallel in the width direction of the second air passage at a predetermined interval, and the second air passage are divided into left and right. A partition plate provided between the first and second needle-shaped discharge electrodes, and a direction orthogonal to the tip of the electrode portion of the first and second needle-shaped discharge electrodes of the second air passage. while a ground electrode provided correspondingly provided on, in the aforementioned apparatus main body, a blowing means for flowing the air to the second air passage of said first air passage and the electrode cartridge of said device body , Boosting means for boosting the voltage of the AC power source to a high negative voltage equal to or higher than a predetermined voltage, and converting the high negative voltage boosted by the boosting means into a pulsating voltage to generate the first and second needle-shaped discharge electrodes. applying pulsed voltage generating means a negative ion generating apparatus that are provided,
The electrode cartridge, mutually dividable, the central portion to the second air passage side cartridge case after an opening for forming the same in a central portion said second air passage and for forming with two of the cartridge case of the front cartridge case having an opening, dividing said second air passage of the electrode cartridge to the right and left in the front cartridge case, said rear cartridge case and the front cartridge case above in the state of being bonded integrally to each other first, with a partition plate is provided you positioned between the second needle-like discharge electrodes cross, inserted the memory substrate for device control to the rear cartridge case A memory substrate storage case for detachably storing is provided, and the rear cartridge case and the front cartridge case are coupled and integrated with each other, and the first cartridge is provided between the rear cartridge case and the front cartridge case. the second needle-like discharge electrodes and one ground electrode that are fixed in a state located in the second air passage of the electrode cartridge memory substrate for device control in the memory substrate storage case of the rear-side cartridge case A negative ion generator characterized in that it can be inserted and removed freely.

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