JP2024020257A - Blower - Google Patents

Abstract

[Problem] It was not possible to efficiently generate positive ions and negative ions. [Solution] The blower includes a fan that generates airflow, a main body in which a cylindrical cavity is formed through which the airflow is sent in a direction along the rotational axis of the fan, and a positive electrode and a negative electrode. The ion generating section includes an ion generating section having one or more pairs, and the ion generating section has a first distance from the rotation axis of the fan to the positive electrode for all of the one or more pairs. The negative electrode is disposed in the cavity so as to be longer than the second distance from the axis to the negative electrode. [Selection diagram] Figure 6

Description

The present invention relates to a blower.

Patent Document 1 discloses a blower that integrates a ceiling light installed on a ceiling surface of a room for illumination, a blower fan, and an ion generator that generates ions. This blower has a fan placed in the center of the main body that is attached to the ceiling, and an ion generator placed on the bottom of the main body.

The ion generator includes a discharge electrode having a positive electrode and a negative electrode, and an induction electrode corresponding to each electrode of the discharge electrode, and generates positive ions and negative ions by discharging.

In the blower, positive ions and negative ions generated by the ion generator are placed on an airflow generated by a blower fan and diffused into the indoor space.

Japanese Patent Application Publication No. 2018-179007 (published on November 15, 2018)

However, in the above-mentioned blower, positive ions and negative ions are caused to flow in the same direction of airflow generated by the blower fan, so that the positive and negative ions may be neutralized. Furthermore, the balance between the amount of positive ions and the amount of negative ions may become unbalanced in the indoor space.

Therefore, in view of the above points, one embodiment of the present invention realizes a blower that can efficiently diffuse positive ions and negative ions into a room.

(1) A blower according to one aspect of the present invention includes a fan that generates an airflow, a main body in which a cylindrical cavity is formed through which the airflow is sent out in a direction along a rotation axis of the fan, and a positive electrode. and an ion generating section having one or more pairs constituted by negative electrodes, the ion generating section having a first distance from the rotation axis of the fan to the positive electrode for all of the one or more pairs. is arranged in the cavity so as to be longer than the second distance from the rotation axis of the fan to the negative electrode.

(2) A blower according to one aspect of the present invention includes a fan that generates an airflow, a main body in which a cylindrical cavity is formed through which the airflow is sent out in a direction along a rotational axis of the fan, and a positive electrode. and an ion generating section having one or more pairs constituted by negative electrodes, the ion generating section having a first distance from the rotation axis of the fan to the positive electrode for all of the one or more pairs. is arranged in the cavity so as to be shorter than a second distance from the rotation axis of the fan to the negative electrode.

(3) In the blower according to one aspect of the present invention, the ion generating section is configured such that the negative electrode and the positive electrode are arranged in the order of the negative electrode and the positive electrode with respect to the direction in which the fan rotates for all of the one or more pairs. placed in the cavity.

(4) The ion generating section is arranged in the cavity so that the positive electrode and the negative electrode are arranged in the order of the positive electrode and the negative electrode in the direction in which the fan rotates for all of the one or more pairs.

(5) In the blower according to one aspect of the present invention, the ion generating section may be configured such that, for all of the one or more pairs, the wind speed of the air flow at the position of the positive electrode is higher than that of the air flow at the position of the negative electrode. higher than the wind speed.

(6) In the blower according to one aspect of the present invention, the ion generating unit may be arranged such that the air velocity at the position of the positive electrode is higher than that at the position of the negative electrode for all of the one or more pairs. lower than wind speed.

It is a front sectional view showing the blower concerning this embodiment. FIG. 3 is a bottom view showing the sending device according to the present embodiment. FIG. 1 is an exploded perspective view showing a sending device according to the present embodiment. (a) It is a perspective view showing an ion generation part. (b) It is a top view of the ion generation part shown in FIG. 4(a). FIG. 2 is a plan view schematically showing the airflow generated by the fan of the blower when looking downward from the ceiling side. FIG. 3 is a plan view schematically showing the relationship between the ion generating section disposed on the lower surface of the main body and the airflow passing therethrough. FIG. 3 is a plan view schematically showing the relationship between the ion generating section disposed on the lower surface of the main body and the airflow passing therethrough. FIG. 3 is a plan view schematically showing the relationship between the ion generating section disposed on the lower surface of the main body and the airflow passing therethrough. (a) It is a top view which shows another ion generation part. (b) It is a top view which shows typically the relationship with the other ion generation part arrange|positioned at the main body lower surface, and the airflow which passes through it. (a) It is a perspective view which shows the modification 1 of an ion generation part. (b) It is a top view of the ion generation part shown to Fig.10 (a). (c) It is a top view which shows typically the relationship between the ion generation part arrange|positioned on the lower surface of a main body, and the airflow which passes through it. (a) It is a perspective view which shows the modification 2 of an ion generation part. (b) It is a top view of the ion generation part shown to Fig.11 (a). (c) It is a top view which shows typically the relationship between the ion generation part arrange|positioned on the lower surface of a main body, and the airflow which passes through it. FIG. 3 is a plan view schematically showing the relationship between the ion generator installed in the lighting body and the airflow passing through it. FIG. 3 is a side view showing the wind speed distribution that occurs when the fan of the blower is moved. (a) It is a top view showing a conventional blower. (b) It is a top view showing the blower concerning this embodiment.

[Embodiment 1]
Embodiment 1 of the present disclosure will be described using FIGS. 1 to 6. FIG. 1 is a front sectional view showing a blower according to this embodiment. FIG. 2 is a bottom view showing the blower according to this embodiment.

The blower 1 includes a main body 2, a fan 3 disposed in the main body 2, and an ion generating section 5 having a positive electrode 31 and a negative electrode 32. An ion generating section 5 is arranged at a predetermined location on the main body 2, and the details will be described later.

The main body 2 is formed into, for example, a substantially cylindrical shape, and a mounting member (not shown) for attaching to the ceiling L is provided on the back side of the main body 2. For example, a hook ceiling is used as the attachment member. Further, the main body 2 includes a lighting main body 20 of a lighting section 4, which will be described later.

Further, the main body 2 includes a fan 3, a power supply board and a control board for the lighting section 4 and the ion generating section 5, and the fan 3 is placed in the center of the lower surface of the main body 2.

The fan 3 includes an impeller 10 that generates airflow, and a motor section 13 that supports the impeller 10 and rotates it. The fan 3 is composed of, for example, an axial fan.

The impeller 10 has a plurality of blades 11, . . . , 11 arranged on the outer peripheral surface of a cylindrical boss portion 12. In the impeller 10, a rotating shaft 14 of a motor section 13 is pivotally supported on a boss section 12, and the tip of the rotating shaft 14 protruding from the center of the boss section is fixed with a fixing screw 15. The radius of the impeller 10 is R.

A space S is formed between the lower surface 2b of the main body 2 and the upper end 10a of the impeller 10, through which air sent to the impeller 10 flows.

As shown in FIG. 2, the impeller 10 is rotated clockwise as shown by an arrow G around a rotation axis 14 perpendicular to the mounting surface (ceiling surface L) of the main body 2 when viewed from the bottom surface by the drive of the motor section 13. Rotates in the forward direction to send airflow downward.

As shown in FIG. 3, a plurality of stays 6, 6, 6 are arranged at a predetermined angle on the peripheral edge 2c of the main body 2, and a lighting section 4 is attached to the tip 6a of each stay 6. Between each stay 6, there are formed flow ports S1, S1, S1 for air to flow into the upper end 10a of the fan 3.

The illumination unit 4 includes an annular illumination main body 20 having, for example, a substantially cylindrical cavity 21 in the center for housing the fan 3 therein. The illumination main body 20 is configured to surround the outer periphery of the fan 3 in a cavity 21 thereof. The illumination main body 20 is equipped with an LED or the like as a light source, and the light source is covered with a illumination cover 22.

The illumination cover 22 is made of, for example, a light-transmitting resin. The upper surface 20a of the illumination main body 20 is, for example, formed flat, and the tips 6a of each stay 6 are fixed thereto. The illumination main body 20 is formed to have a polygonal cross section, for example.

The impeller 10 is housed in a cavity 21 of the illumination body 20, is pivotally supported on a rotating shaft 14 of a motor section 13 for rotational driving, and is rotated by fixing the tip of the rotating shaft 14 with a fixing screw 15. Become free.

Note that the illumination unit 4 may have a configuration in which, for example, the illumination main body 20 is divided into four in the circumferential direction and the divided illumination main bodies are connected to each other in an annular shape.

A fan guard 7 having a plurality of blades for covering the opening 23 is provided at the lower end of the lighting body 20. The fan guard 7 can prevent foreign objects and the like from coming into contact with the impeller 10. Note that the fan guard 7 may not be provided depending on the configuration of the blower 1.

The ion generating unit 5 shown in FIG. 4 includes, for example, a substantially elongated box-shaped housing 30, and a positive electrode 31 and a negative electrode 32, which are discharge electrodes that protrude from openings 30a and 30b at the top of the housing 30 and generate discharge. , each of the induction electrodes 33 and 34 facing each of the discharge electrodes and provided at the periphery of each of the openings 30a and 30b.

Furthermore, gate-shaped frames 35, 35 are provided in the upper longitudinal direction of the housing 30 to prevent contact with the positive electrode 31 and the negative electrode 32. Note that a plurality of gate-shaped frames 35, 35 may be provided in the short side direction of the upper part of the housing. The discharge electrodes (positive electrode 31, negative electrode 32) and induction electrodes 33, 34 of the ion generating section 5 are connected to the control board of the main body 2, and discharge is controlled.

The positive electrode 31 and the negative electrode 32 are formed into a substantially brush shape, for example, by bundling a plurality of thread-like conductors, and have their lower portions fixed within the housing 30 . Note that the positive electrode 31 and the negative electrode 32 may have, for example, a substantially needle-shaped configuration.

The ion generating section 5 equipped with a brush-shaped electrode has an increased area of the region where positive and negative ions are generated, so compared to a needle-shaped electrode, the amount of ions generated can be increased when the same voltage is applied. I can do it.

In the ion generating section 5, when a positive high voltage pulse is applied to the positive electrode 31 of one discharge electrode and a negative high voltage pulse is applied to the other negative electrode 32, the tips of the positive electrode 31 and the negative electrode 32 of the same discharge electrode Then, a corona discharge occurs, producing positive and negative ions.

Note that the positive ion is a cluster ion in which a plurality of water molecules are clustered around a hydrogen ion (H ⁺ ), and is expressed as H ⁺ (H ₂ O)m (m is any integer greater than or equal to 0). A negative ion is a cluster ion in which a plurality of water molecules are clustered around an oxygen ion (O ₂ ⁻ ), and is expressed as O ₂ ⁻ (H ₂ O) _n (n is any integer greater than or equal to 0).

Furthermore, when positive and negative ions are released into the air, both ions surround molds and viruses floating in the air and cause chemical reactions with each other on their surfaces. Floating mold and bacteria are removed by the action of hydroxide radicals (.OH), which are discharge products generated at this time.

The ion generator 5 generates discharge products such as electrons, ions, radicals, and ozone in the air by discharge.

The positive ions and negative ions generated by the discharge of the ion generating section 5 described above have the property of canceling each other out, so if the positive ions and negative ions are placed in the airflow in the same direction (for example, see FIG. 14(a)), they cancel each other out. They are neutralized and cannot be diffused far into the room, reducing the effect produced by the presence of both positive and negative ions. Therefore, the ion generator 5 is arranged at a predetermined position in the main body 2 so that the positive ions and negative ions generated in the ion generator can be widely diffused. Note that the ion generating section 5 may be covered with a case provided with an opening so that hands and fingers do not directly touch the exposed electrodes.

First, the airflow generated by the fan 3 of the blower 1 will be explained. FIG. 5 is a plan view schematically showing the airflow generated by the fan 3 of the blower 1 when looking downward from the ceiling side (upper end side of the impeller 10). Note that the downward direction from the ceiling side is the direction of the VV line in FIG.

The blower 1 lights up the room by lighting the lighting section 4, and when the motor section 13 is driven to rotate and the impeller 10 rotates in the positive direction shown by the arrow G (see FIG. 2), the direction of the arrow K1 ( As shown in FIG. 1), air near the ceiling is supplied to the intake side of the impeller 10 (the upper end 10a side of the impeller 10) through the flow port S1. Air passes through the opening 23 of the illumination body 20 to the fan guard 7 in order and is sent downward by the impeller 10 as shown by arrow K2 (see FIG. 1). Thereby, the blower 1 performs indoor air circulation.

The ion generating section 5 is placed on the lower surface 2b of the main body 2, and the upper part of the ion generating section 5 is located so as to face the upper end 10a of the impeller 10 of the fan 3. A positive electrode 31 and a negative electrode 32 as discharge electrodes and both induction electrodes 33 and 34 are provided on the upper part of the ion generating section 5, and the positive ions and negative ions generated at the positive electrode 31 and the negative electrode 32 due to discharge are It is discharged into a space S between the lower surface 2b of the main body 2 and the upper end 10a of the impeller 10.

As shown in FIGS. 3 and 6, the ion generator 5 has a first distance r1 from the rotation shaft 14 of the fan 3 to the positive electrode 31 and a second distance r1 from the rotation shaft 14 of the fan 3 to the negative electrode 32. r2 are arranged on the lower surface 2b of the main body 2 so that they are different from each other.

According to this configuration, the positive ions generated by the positive electrode 31 and the negative ions generated by the negative electrode 32 of the ion generating section 5 are carried by different air currents W2 and W1, respectively, so that the positive ions and the negative ions are separated immediately after the positive and negative ions are generated. Neutralization between ions is reduced, positive ions and negative ions are carried in different airflows W2 and W1, respectively, and can be efficiently released into the room, and the amount of positive ions and negative ions in the room can be balanced. can.

Further, the fan 3 generates a swirling wind W by rotating, and the negative electrode 32 of the ion generator 5 is arranged on the windward side of the swirling wind W, and the negative electrode 32 of the ion generator 5 is arranged on the leeward side of the swirling wind W. A positive electrode 31 is placed. Note that, in the swirling wind W, a position far from the rotation axis 14 of the fan 3 is defined as upwind, and a position close to the rotation axis 14 of the fan 3 is defined as leeward.

According to this configuration, the negative ions generated by the negative electrode 32 of the ion generator 5 are blown from the windward side of the swirling wind W, so that many negative ions that are easily extinguished can be diffused into the indoor space.

Further, the ion generating section 5 is arranged on the lower surface 2b of the main body 2 so that the negative electrode 32 and the positive electrode 31 are in this order with respect to the direction in which the fan 3 rotates.

As shown in FIG. 6, the second distance r2 from the rotation shaft 14 of the fan 3 to the negative electrode 32 of the ion generation section 5 is the first distance r2 from the rotation shaft 14 of the fan 3 to the positive electrode 31 of the ion generation section 5. It is preferable to arrange the ion generating section 5 on the lower surface 2b of the main body 2 so that the distance r1 is longer than the distance r1.

According to this configuration, positive ions generated by the positive electrode 31 of the ion generator 5 are carried by the airflow W2 close to the rotating shaft 14, and negative ions generated by the negative electrode 32 are carried by the airflow W1 far from the rotating shaft 14. By transporting positive and negative ions to different airflows W2 and W1, neutralization between positive and negative ions is reduced, positive and negative ions are efficiently released into the room, and the amount of positive and negative ions in the room is reduced. The amount of ions can be balanced.

Further, the first distance r1 is shorter than the rotation radius R of the blades 11 of the impeller 10. According to this configuration, since the positive electrode 31 is located inside the rotation radius R of the blade 11, the positive ions generated at the positive electrode 31 are carried by the airflow and sent from the intake side of the fan 3 to the outlet side, and are sent indoors. can be released to

Further, the ion generating section 5 is arranged on the lower surface 2b of the main body 2 at a position close to the tip side in the longitudinal direction of the blades 11 of the impeller 10. The negative electrode 32 is located on the lower surface 2b of the main body 2 and near the maximum of the wind speed distribution generated by the fan 3. The positive electrode 31 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the negative electrode 32 (at a position where the wind speed is lower than that of the negative electrode 32).

According to this configuration, the positive ions and negative ions generated in the ion generator 5 can be carried on the strong airflow generated near the tips of the blades 11 of the impeller 10, without increasing the rotation speed of the fan 3. Positive and negative ions can be sent indoors.

Note that the ion generating section 5 in FIG. 7 may be rotated by 180 degrees and placed on the lower surface 2b of the main body 2. The negative electrode 32 is located on the lower surface 2b of the main body 2 and near the maximum of the wind speed distribution generated by the fan 3. The positive electrode 31 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the negative electrode 32 (at a position where the wind speed is lower than that of the negative electrode 32). Even in this configuration, the same effects as in the above embodiment can be achieved.

Further, in the ion generating section 5 of FIG. 8, the positive electrode 31 is located on the windward side of the swirling wind W, and the negative electrode 32 is located on the leeward side of the swirling wind W. The ion generator 5 may be arranged on the lower surface 2b of the main body 2 so that the first distance r1 is longer than the second distance r2. The positive electrode 31 is located on the lower surface 2b of the main body 2 and near the maximum of the wind speed distribution generated by the fan 3. The negative electrode 32 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the positive electrode 31 (a position where the wind speed is lower than that of the positive electrode 31). Even in this configuration, the positive ions generated by the positive electrode 31 and the negative ions generated by the negative electrode 32 of the ion generating section 5 are carried by different air currents W2 and W1, so that immediately after the positive and negative ions are generated, the positive ions and negative ions are Neutralization of ions is reduced, positive ions and negative ions are carried in different airflows W2 and W1, respectively, and can be efficiently discharged into the room, and the amount of positive ions and negative ions in the room can be balanced.

The above-described ion generating unit 5 has a configuration in which the tips of the positive electrode 31 and the tips of the negative electrodes 32 are arranged side by side on a line that crosses the center of the housing 30 in plan view, as shown in FIG. 4(b). As shown in FIG. 9(a), the ion generating section 5-1 may have a configuration in which the tip of the positive electrode 31 and the tip of the negative electrode 32 are arranged diagonally on the casing 30 in plan view.

When the ion generator 5-1 is placed on the lower surface 2b of the main body 2, the distance from the rotating shaft 14 of the fan 3 to both corners of the housing 30 of the ion generator 5-1 is as shown in FIG. 9(b). Although they are equal, the distance r1 from the rotation shaft 14 of the fan 3 to the positive electrode 31 and the distance r2 from the rotation shaft 14 to the negative electrode 32 can be arranged so as to be different. The negative electrode 32 is located on the lower surface 2b of the main body 2 and near the maximum of the wind speed distribution of the swirling wind W generated by the fan 3. The positive electrode 31 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the negative electrode 32 (at a position where the wind speed is lower than that of the negative electrode 32). According to this configuration, the same effects as the above-described embodiment can be achieved. Note that the ion generating section 5-1 has a configuration in which the tips of the positive electrode 31 and the tips of the negative electrode 32 are arranged on a diagonal line diagonally downward to the right of the housing 30 when viewed from above, but as shown in FIG. 9(b), The tip of the positive electrode 31 and the tip of the negative electrode 32 may be arranged on a diagonal line rising to the right of the housing 30 so that the relationship between the distance r1 and the distance r2 is such that distance r2<distance r1.

Further, as shown in FIGS. 10 and 11, a modification of the ion generating section 5 may include a plurality of positive and negative electrodes as discharge electrodes and a plurality of induction electrodes.

[Modification 1]
As shown in FIGS. 10(a) and 10(b), the housing 30 of the ion generating section 5-2 includes, for example, two positive electrodes 31-1, 31-2 and two negative electrodes 32-1, 32-2 are arranged horizontally in a straight line. An ion generating section 5-2 having a plurality of electrodes is installed in the main body 2.

As shown in FIG. 10(c), the ion generating unit 5-2 has a first distance r1-1 from the rotation shaft 14 of the fan 3 to the positive electrode 31-1 and a distance r1-1 from the rotation shaft 14 of the fan 3 to the negative electrode 32. -1 to the lower surface 2b of the main body 2 so that the second distance r2-1 is different from the second distance r2-1. Alternatively, the first distance r1-2 from the rotation axis 14 of the fan 3 to the positive electrode 31-2 is different from the second distance r2-2 from the rotation axis 14 of the fan 3 to the negative electrode 32-2. It is arranged on the lower surface 2b of the main body 2. The negative electrodes 32-1 and 32-2 are located on the lower surface 2b of the main body 2 and near the maximum wind speed distribution of the swirling wind W generated by the fan 3. The positive electrodes 31-1 and 31-2 are located on the lower surface 2b of the main body 2 and at a position closer to the rotation axis than the negative electrodes 32-1 and 32-2 (a position where the wind speed is lower than that of the negative electrodes 32-1 and 32-2). do.

According to this configuration, a large amount of positive ions generated by the plurality of positive electrodes 31-1, 31-2 of the ion generating section 5-2 and a large amount of negative ions generated by the plurality of negative electrodes 32-1, 32-2 are respectively By being carried by different airflows W2 and W1, neutralization between positive ions and negative ions is reduced, and a large amount of positive ions and a large amount of negative ions are efficiently released into the room, and the amount of positive ions and negative ions are reduced indoors. The amount can be balanced.

Further, the fan 3 generates a swirling wind W by rotating, and the negative electrodes 32-1 and 32-2 of the ion generating section 5-2 are arranged on the windward side of the swirling wind W. Positive electrodes 31-1 and 31-2 of the ion generating section 5-2 are arranged on the leeward side.

According to this configuration, a large amount of negative ions generated by the plurality of negative electrodes 32-1, 32-2 of the ion generating section 5-2 are blown from the windward side of the swirling wind, so that the negative ions that are easy to disappear are transferred to the indoor space. Can be spread a lot.

Further, the ion generating section 5-2 is arranged on the lower surface 2b of the main body 2 in the order of the negative electrodes 32-1, 32-2 and the positive electrodes 31-1, 31-2 with respect to the direction in which the fan 3 rotates. .

Further, the second distance r2-1 from the rotating shaft 14 of the fan 3 to the negative electrode 32-1 of the ion generating section 5-2 is the second distance r2-1 from the rotating shaft 14 of the fan 3 to the positive electrode 31-1 of the ion generating section 5-2. It is preferable to set it longer than the first distance r1-1 to 1. Alternatively, the second distance r2-2 from the rotating shaft 14 of the fan 3 to the negative electrode 32-2 of the ion generating section 5-2 is the second distance r2-2 from the rotating shaft 14 of the fan 3 to the positive electrode 31-2 of the ion generating section 5-2. It is preferable to set the distance to be longer than the first distance r1-2 up to 2.

According to this configuration, a large amount of positive ions generated by the plurality of positive electrodes 31-1, 31-2 of the ion generating section 52 are carried by the airflow W2 near the rotating shaft 14, and are transferred to the plurality of negative electrodes 32-1, 32-. A large amount of negative ions generated by the rotation shaft 14 are carried to the airflow W1 far from the rotating shaft 14. By carrying a large amount of positive and negative ions into different air currents W2 and W1, neutralization between positive and negative ions is reduced immediately after the generation of positive and negative ions, and a large amount of positive and negative ions are efficiently brought into the room. In addition, the amount of positive ions and the amount of negative ions in the room can be balanced.

Further, the first distance r1 is shorter than the rotation radius R of the blades 11 of the impeller 10. According to this configuration, since the positive electrodes 31-1 and 31-2 are located inside the rotation radius R of the blade 11, positive ions generated at the positive electrodes 31-1 and 31-2 are carried on the airflow, It can be sent from the intake side of the fan 3 to the outlet side and discharged into the room.

Further, the ion generating section 5-2 is arranged at a position close to the tip side in the longitudinal direction of the blades 11 of the impeller 10 on the lower surface side of the main body 2. The negative electrode 32-2 is located on the lower surface 2b of the main body 2 and near the maximum wind speed distribution of the swirling wind W generated by the fan 3. The positive electrode 31-2 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the negative electrode 32-2 (at a position where the wind speed is lower than that of the negative electrode 32-2).

According to this configuration, a large amount of positive ions and a large amount of negative ions generated in the ion generating section 5-2 can be carried on the strong airflow generated near the tips of the blades 11 of the impeller 10, so that the rotation speed of the fan can be reduced. A large amount of positive and negative ions can be sent out to diffuse into the room without raising the temperature.

[Modification 2]
Further, as shown in FIGS. 11(a) and 11(b), the ion generating unit 5-3 includes a positive electrode 31-1 and a negative electrode 32-1 as a pair, and further includes a positive electrode 31-2 and a negative electrode 32-1. A pair of negative electrodes 32-2 may be arranged side by side.

As shown in FIG. 11(c), the ion generating unit 5-3 has a first distance r1-1 from the rotation shaft 14 of the fan 3 to the positive electrode 31-1 and a distance r1-1 from the rotation shaft 14 of the fan 3 to the negative electrode 32. It is preferable to arrange the second distance r2-1 on the lower surface 2b of the main body 2 so that the second distance r2-1 is different from -1. Alternatively, the ion generating section 5-3 is configured to have a first distance r1-2 from the rotating shaft 14 of the fan 3 to the positive electrode 31-2 and a second distance r1-2 from the rotating shaft 14 of the fan 3 to the negative electrode 32-2. It is preferable to arrange it on the lower surface 2b of the main body 2 so that it is different from r2-2.

According to this configuration, a large amount of positive ions generated by the plurality of positive electrodes 31-1, 31-2 of the ion generating section 5-3 and a large amount of negative ions generated by the plurality of negative electrodes 32-1, 32-2 are respectively By being carried by different air currents, neutralization between positive ions and negative ions is reduced, a large amount of positive ions and a large amount of negative ions are efficiently released into the room, and the amount of positive ions and negative ions in the room is reduced. It can be well balanced.

Further, the fan 3 generates a swirling wind W by rotating, and the negative electrode 32-2 of the ion generating section 5-3 is arranged on the windward side of the swirling wind W, and the ion generator 32-2 is arranged on the leeward side of the swirling wind W. The positive electrode 31-2 of the generating section 5-3 is arranged. Further, the negative electrode 32-1 of the ion generating section 5-3 is arranged on the windward side of the swirling wind W, and the positive electrode 31-1 of the ion generating section 5-3 is arranged on the leeward side of the swirling wind W.

According to this configuration, since a large amount of negative ions generated by the plurality of negative electrodes of the ion generating section 5-3 are blown from the windward side of the swirling wind W, it is possible to diffuse a large amount of easily extinguished negative ions into the indoor space. .

Further, the ion generating section 5-3 is arranged on the lower surface 2b of the main body 2 so that the negative electrode and the positive electrode are arranged in this order with respect to the direction in which the fan 3 rotates.

Further, the second distance r2-2 from the rotating shaft 14 of the fan 3 to the negative electrode 32-2 of the ion generating section 5-3 is the second distance r2-2 from the rotating shaft 14 of the fan 3 to the positive electrode 31-2 of the ion generating section 5-3. Preferably, it is longer than the first distance r1-2 up to 2. Alternatively, the second distance r2-1 from the rotating shaft 14 of the fan 3 to the negative electrode 32-1 of the ion generating section 5-3 is the second distance r2-1 from the rotating shaft 14 of the fan 3 to the positive electrode 31-1 of the ion generating section 5-3. 1 is preferably longer than the first distance r1-1.

According to this configuration, a large amount of positive ions generated by the plurality of positive electrodes 31-1, 31-2 of the ion generating section 5-3 are carried by the air current near the rotating shaft 14, and are transferred to the plurality of negative electrodes 32-1, 32. A large amount of negative ions generated by -2 are carried to the airflow far from the rotating shaft 14. By carrying a large amount of positive and negative ions into different air currents, neutralization between positive and negative ions is reduced immediately after the positive and negative ions are generated, and a large amount of positive and negative ions are efficiently released into the room. Moreover, the amount of positive ions and the amount of negative ions in the room can be balanced.

Further, the first distance r1 is shorter than the rotation radius R of the blades 11 of the impeller 10. According to this configuration, since the positive electrodes 31-1, 31-2 are located inside the rotation radius R of the blade 11, positive ions generated at the positive electrodes 31-1, 31-2 are carried on the airflow, It can be sent from the intake side of the fan 3 to the outlet side and discharged into the room.

Furthermore, the ion generating section 5-3 is arranged at a position close to the tip side in the longitudinal direction of the blades 11 of the impeller 10 on the lower surface 2b side of the main body 2. The negative electrode 32-2 is located on the lower surface 2b of the main body 2 and near the maximum wind speed distribution of the swirling wind W generated by the fan 3. The positive electrode 31-2 is located on the lower surface 2b of the main body 2 at a position closer to the rotating shaft 14 than the negative electrode 32-2 (at a position where the wind speed is lower than that of the negative electrode 32-2).

According to this configuration, a large amount of positive ions and a large amount of negative ions generated in the ion generating section 5-3 can be carried on the strong airflow generated near the tips of the blades 11 of the impeller 10, so that the rotation speed of the fan can be reduced. A large amount of positive and negative ions can be sent out to diffuse into the room without raising the temperature.

Note that a plurality of the above-mentioned ion generators 5 may be provided on the lower surface 2b of the main body 2. For example, the two ion generating units 5 may be arranged diagonally to each other so that the rotation axis 14 passes through the lower surface 2b of the main body 2.

FIG. 12 is a plan view schematically showing the airflow generated by the fan 3 of the blower 1 when viewed downward from the line XII-XII in FIG.

As shown in FIGS. 12(a) and 12(b), the ion generating unit 5 is disposed outside the rotation radius R of the blade 11, and the rotation axis is attached to the upper surface 20a of the illumination main body 20 included in the main body 2. The distance r1 from the rotating shaft 14 to the positive electrode 31 may be different from the distance r2 from the rotating shaft 14 to the negative electrode 32.

Further, since the wind force is large in the area near the tip of the impeller 10 of the fan 3, the ion generating unit 5 is arranged on the upper surface 20a of the illumination body 20 so that the negative electrode 32 is located closer to the rotating shaft 14 than the positive electrode 31. It is located in That is, the distance r2 from the rotating shaft 14 to the negative electrode 32 is shorter than the distance r1 from the rotating shaft 14 to the positive electrode 31. Note that the ion generating section 5 in FIG. 12(b) is arranged at a position on the upper surface 20a rotated by 180 degrees from the position on the upper surface 20a of the illumination main body 20 shown in FIG. 12(a).

In this configuration, the positive ions generated by the positive electrode 31 and the negative ions generated by the negative electrode 32 of the ion generating section 5 are carried by different air currents W3 and W4, so that immediately after the positive and negative ions are generated, the positive ions and negative ions are Neutralization of ions is reduced, positive ions and negative ions are carried in different airflows W3 and W4, respectively, and can be efficiently discharged into the room, and the amount of positive ions and negative ions in the room can be balanced.

The blower according to the first embodiment of the present disclosure described above will be further explained in detail with reference to FIGS. 13 and 14. FIG. 13 is a side view showing the wind speed distribution of the wind generated when the fan 3 of the blower 1 is moved. In FIG. 14, the distance r1 from the rotation axis 14 of the main body 2 to the positive electrode 31 of the ion generating section 5 and the distance r2 from the negative electrode 32 are equal, and the distance r1 and the distance r2 are different from each other. The amount of ions generated in each case was measured and compared.

As shown in FIG. 13, when the fan 3 is rotated, the blower 1 blows out air containing positive and negative ions generated in the ion generator 5 from the opening 23 of the lighting body 20. The wind force is small in the peripheral area directly below the rotating shaft 14 of the fan 3. The area directly below the tip of the impeller 10 of the fan 3 has a large wind force.

As shown in FIG. 14(a), the ion generator is installed at a position on the bottom surface of the main body where the distance r1 from the rotation axis to the positive electrode of the ion generator is equal to the distance r2 from the rotation axis to the negative electrode of the ion generator. do. For example, let r1=r2=90mm.

When the blower 101 shown in FIG. 14(a) was installed in a closed room and positive ions and negative ions were measured at predetermined measurement points, for example, the number of positive ions was approximately 80,000/cm3, and the number of negative ions was approximately 80,000/cm3. was approximately 330,000 pieces/ ^cm3 .

Considering the fact that there are fewer positive ions than negative ions, the positive electrode of the ion generator on the bottom of the main unit is located on the windward side, and the negative electrode is located on the leeward side, so the positive ions on the windward side are mixed with the negative ions on the leeward side. It is thought that the number of positive ions diffused into the room becomes smaller than the amount of negative ions as a result of the summation and decrease.

Therefore, as shown in FIG. 14(b), the ion generating section is installed so that the distance r1 from the rotating shaft to the positive electrode of the ion generating section is different from the distance r2 from the negative electrode on the lower surface of the main body. For example, let r1=85mm and r2=105mm.

When the blower 1 shown in FIG. 14(b) was installed in a closed room and positive ions and negative ions were measured at predetermined measurement points, for example, approximately 370,000 positive ions/cm ³ and negative ions were measured at predetermined measurement points. The number of ions was approximately 320,000/ ^cm3 .

Considering the amount of positive ions and negative ions, the negative electrode of the ion generating part on the bottom of the main unit is located on the fan tip side, and the positive electrode is located on the rotating shaft side, so the flow of air is different for positive ions and negative ions. It is thought that the amount of ions that are transported, neutralized and annihilated is reduced, and that the positive ions and negative ions that are diffused into the room are diffused in a well-balanced manner.

In the above embodiment, as an example, the case was mainly explained in which the fan was attached to a ceiling light that is attached to the ceiling. It may be an electronic device such as a conditioner, a deodorizer, a refrigerator, a vacuum cleaner, or a cooking appliance.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. are also included within the technical scope of the present invention.

L Ceiling S Space S1 Distribution port 1 Air blower 2 Main body 2a Upper surface 2b Lower surface 2c Peripheral section 3 Fan 4 Lighting section 5 Ion generating section 6 Stay 7 Fan guard 10 Impeller 10a Upper end 11 Blade 12 Boss section 13 Motor section 14 Rotating shaft 15 Fixed Screw 20 Lighting body 20a Top surface 21 Cavity 22 Lighting cover 23 Opening 30 Housing 31 Positive electrode 32 Negative electrode 33 Induction electrode 34 Induction electrode 35 Portal frame

Claims (6)

A fan that generates airflow;
a main body formed with a cylindrical cavity through which the airflow is sent out in a direction along the rotational axis of the fan;
comprising an ion generating section having one or more pairs constituted by a positive electrode and a negative electrode,
The ion generating section is configured such that for all of the one or more pairs, a first distance from the rotation axis of the fan to the positive electrode is longer than a second distance from the rotation axis of the fan to the negative electrode. arranged in the cavity so that
Blower. A fan that generates airflow;
a main body formed with a cylindrical cavity through which the airflow is sent out in a direction along the rotational axis of the fan;
comprising an ion generating section having one or more pairs constituted by a positive electrode and a negative electrode,
The ion generating section is configured such that, for all of the one or more pairs, a first distance from the rotation axis of the fan to the positive electrode is shorter than a second distance from the rotation axis of the fan to the negative electrode. arranged in the cavity so that
Blower. The ion generating unit is arranged in the cavity so that the negative electrode and the positive electrode are arranged in the order of the negative electrode and the positive electrode with respect to the direction in which the fan rotates for all of the one or more pairs,
The blower according to claim 1 or claim 2. The ion generating unit is arranged in the cavity so that the positive electrode and the negative electrode are arranged in the order of the positive electrode and the negative electrode with respect to the direction in which the fan rotates for all of the one or more pairs,
The blower according to claim 1 or claim 2. In the ion generating unit, for all of the one or more pairs, the speed of the airflow at the position of the positive electrode is higher than the wind speed of the airflow at the position of the negative electrode.
The blower according to claim 1. In the ion generating unit, for all of the one or more pairs, the speed of the airflow at the position of the positive electrode is lower than the wind speed of the airflow at the position of the negative electrode.
The blower according to claim 2.

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