JPS63224663A - Blower - Google Patents

Abstract

PURPOSE:To inhibit a resonant sound by changing a distance between a cathode and ionization beams in a blower with an air circuit section in which an air current is drifted at approximately a right angle. CONSTITUTION:A blower body 1 has a suction opening 2 and a discharge open ing 3, and both openings 2, 3 are each formed to adjacent surfaces, and constitut ed so that an air current is bent at approximately a right angle. Respective cathode 4a-4c is juxtaposed at regular intervals in approximately rectangular direction to the air current, and ionization beams 5a-5c are mounted paired with the cathodes. Distances l1-l3 among each ionization beam 5a-5c and the cathodes 4a-4c are set in larger size with approach to the suction opening 2 and in smaller size with separation from the suction opening 2 at that time. Accordingly, the difference of air quantity (air velocity) on the center side of the curvature of the air current and air quantity (air velocity) on the side of separation is inhibited, thus eliminating the nonuniformity of distribution. When the degrees of the distances (l) are set, the arbitrary nonuniformity of the distribution of blast is acquired.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a blowing device that obtains a blowing effect by applying a high voltage between a cathode plate and an ionizing wire to cause corona discharge in the ionizing wire.

2. Description of the Related Art Conventionally, the technique of applying a high voltage between a cathode plate and an ionized wire to generate a corona discharge in the ionized wire to obtain a blowing effect is well known, and many applied technologies have also been developed.

(For example, as a document, Deguchi et al.: 5ANYOTECHN
ICAL REVIEW VOL, 4 hl (1972
)) However, depending on the details of the development, the inlet and outlet of the airflow may have to be located approximately at right angles in order to discharge the airflow in an arbitrary direction.

The basic structure will be explained below with reference to FIG.

In the figure, reference numeral 31 denotes a blower main body configured such that the positional relationship between the suction port 32 and the discharge port 33 is approximately perpendicular to each other. A plurality of cathode plates 34 and an ionization line 3 paired with the cathode plates 34
5 are arranged.

Reference numeral 36 is a well-known power supply device that applies a high voltage between each of the cathode plates 34 and the ionization wires 35 to generate corona discharge.

The air blowing device having the above configuration can blow air from the taste outlet 33 according to a well-known principle.

Problems to be Solved by the Invention However, in the conventional configuration described above, the distances between each cathode plate 34 and the ionization line 35 are all constant, so the air volume (@speed) discharged from the discharge port 33 varies depending on the suction port. The closer it is to 32, the larger it becomes, and the farther away it is, the smaller it becomes, and there is a problem that the distribution becomes uneven.

Such problems arise when applying this technology to air conditioners.
This was not desirable in terms of air blowing characteristics, and some kind of improvement measure was required.

Furthermore, in the above conventional configuration, the ionization line 35 and the cathode plate 3
Since electrostatic attraction is generated between the ionized wires 35, a phenomenon occurs in which each ionized wire 35 vibrates. Therefore, each ionization line 35
If the applied tension was kept constant, all the ion beams 35 would resonate due to the vibration phenomenon described above, causing a problem of producing resonance noise. This resonance noise impairs the noiseless feature of ion air blowing. However, some kind of improvement measures were required.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to make it possible to arbitrarily set the uneven air distribution at the discharge port, and to control resonance noise.

Means for Solving the Problems In order to solve the above problems, the present invention sets the distance between the cathode plate and the ionization line so that it gradually becomes shorter as it moves away from the center of the curvature of the airflow. .

By adopting such a configuration, it is possible to suppress the difference between the air volume (wind speed) on the center side of the curvature of the air flow and the air volume (wind speed) on the side moving away from it, and eliminate uneven distribution.

Further, by setting the degree of the distance, any unevenness in the air blow distribution can be obtained.

EXAMPLE Hereinafter, the present invention will be explained with reference to FIGS. 1 and 2 of the accompanying drawings, which show one example of the invention.

In FIG. 1, reference numeral 1 denotes a blower main body, which has an inlet 2 and an outlet 3. The suction port 2 and the discharge port 3 are provided on opposing surfaces, respectively, and are configured so that the airflow is bent at approximately right angles. 4a, 4b, and 4c are cathode plates, which are arranged in parallel at a predetermined interval in a direction substantially perpendicular to the airflow. Ionization lines 5a, 5b, and 5c form pairs with the cathode plates 4a, 4b, and 4C, respectively. The distance e between each ionization line 5a, 5b, 5C and the cathode plate 4a, 4b, 4C
1, e2, and 13 are set to be larger as they are closer to the suction port 2, and smaller as they are farther away from the suction port 2.

In other words, the distance between the electrodes is set to gradually become smaller as the distance from the center of the bending of the airflow increases. 6 is the cathode plate 4a, 4b, 4C and the ionization wire 5a, 5b,
This is a power supply device that applies a high DC voltage between 50 and 50 degrees.

Next, with reference to FIG. 2, the results obtained by experiment on the relationship between the distance between the cathode plate and the ionization line and the wind speed (@amount) will be explained.

Note that the experimental conditions are as follows.

Ionization wire diameter: approx. 0.1 m (Tungsten) Cathode plate thickness: Approx. 0.9 mm (Aluminum) Applied voltage: 20-1
5KV Based on the above experimental conditions, the distance e between the cathode plate and the ionization line
When a corona discharge is generated with l=10rm, /=1smt setting t, a larger wind speed (air volume) is obtained when the setting is as small as 1=10, as shown in FIG.

Note that it is clear that the distance e has a limit considering the current environment (applied limit voltage, etc.), and the distance may be selected within an appropriate range.

Therefore, as shown in FIG.
By setting 13 to gradually become smaller, the air volume distribution at the discharge port 3 can be made uniform or can be set arbitrarily.

This can be explained as follows, based on various related experiments conducted by the inventors, as a characteristic of the ion wind when corona discharge is continuously and stably occurring.

The relationship between the ion wind velocity V and the ionization current density ρ on the surface of the ionization line is experimentally shown as equation (1).

'Jocρ0.5 ・・・・・・・・・・・・
(1) Furthermore, the current density ρ when the electrode structure is specified is expressed as the relationship between the applied voltage E and the inter-electrode distance e as shown in equation (2).

From equations (1) and (2), the relationship between ion wind speed V, applied voltage E, and interelectrode distance l is expressed as equation (3).

This is consistent with the experimentally confirmed results shown in FIG.

As a result, when the configuration shown in this embodiment is applied to an air conditioner, even if it becomes necessary to configure a wind circuit in which the airflow is refracted approximately at right angles or at an arbitrary angle, such a configuration can be applied to the corona discharge section. By using this, it is possible to improve the discharge air volume distribution.

In addition, by changing the distances 11, r2, and z3, the electrostatic attraction between the ionized wires 5a, 5b, and 50 is different, so even if vibration occurs in each of the ionized wires 5a, 5b, and 5c, the vibration The frequencies are different, and as a result, they do not resonate with each other to generate resonance sound.

In addition, in this example, the ionization lines 5a, 5b, 5
Although the ionization wires 5a and 5
Even if the cathode plates 4a, 4b, and 4c are arranged side by side in a horizontal line and the cathode plates 4a, 4b, and 4c are arranged so as to gradually approach each other, similar effects can be expected, and this does not depart from the gist of the present invention.

Effects of the Invention As described above, the present invention provides an air blower having a wind circuit section in which the airflow is deflected at approximately right angles, and has a simple configuration in which the distance between the cathode plate and the ionization line is changed, thereby increasing the air volume (air speed) at the discharge port side. While making the distribution uniform or setting it arbitrarily,
Furthermore, resonance noise caused by mutual resonance between ionized wires can be suppressed, and a quiet air blowing effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a basic configuration diagram of an air blower according to an embodiment of the present invention, Fig. 2 is a characteristic diagram showing the relationship between the distance between the cathode plate and the ionization line and the air volume (air speed) in the air blower, and Fig. 3 is a conventional FIG. 2 is a basic configuration diagram of an example blower device. 1... Air blower main body, 2... Suction port,
3...Discharge port, 4a, 4b, 4c...
Cathode plate, 5a, 5b, 5C...Ionization line, 1
1, 12, 13... Distance. Name of agent: Patent attorney Toshio Nakao and 1 other person/
- Air blower main body 2 ° - Connection 0 3 - Cero 4a, 4J1.4 cm pole & 5 Ω 5 C - ゛ - Ionization wire 1! t, I'r 13 - Katsu 1st figure 65c

Claims (1)

[Claims] In a blower device, the blower body is provided with a cathode plate and an ionization wire arranged at a predetermined distance, and a wind circuit is provided in the main body of the blower device to regulate the airflow flowing through the ionization wire and the cathode plate so that the air flow is approximately perpendicular to the cathode plate. , the plurality of cathode plates or ionization lines are arranged in parallel in a direction substantially perpendicular to the airflow,
Furthermore, the ionization line paired with each of the cathode plates or the cathode plate paired with each ionization line is arranged so that the distance between the cathode plate and the ionization line gradually becomes shorter as the distance from the center of the curvature of the airflow increases. Air blower installed.