JPH0634604B2 - Blower - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower device that obtains a blowing effect by applying a high voltage between a cathode plate and an ionization line to generate corona discharge in the ionization line.

2. Description of the Related Art Conventionally, a technique of applying a high voltage between a cathode plate and an ionization line to generate a corona discharge in the ionization line to obtain a blowing effect is well known, and many application techniques thereof have been developed.
(For example, as a document, Exit et al .: SANY TECHNICAL R
EVIEW VL.4 No.1 (1972)) However, depending on the development content, it may be necessary to position the inlet and outlet of the airflow at a substantially right angle in order to discharge the airflow in any direction.

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

In the figure, reference numeral 31 designates a blower main body in which the positional relationship between the suction port 32 and the discharge port 33 is substantially right angled, and the air blower main body 31 is arranged inside so as to be substantially perpendicular to the flow of air. A plurality of cathode plates 34 and the ionizing rays 3 paired therewith
5 are provided. Reference numeral 36 is a well-known power supply device for applying a high voltage between the cathode plates 34 and the ionizing wires 35 to generate a corona discharge.

The blower configured as described above can blow air from the discharge port 33 according to a well-known principle.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional configuration, since the distance L between each cathode plate 34 and the ionization line 35 is constant, the air volume (wind speed) discharged from the discharge port 33 is equal to the suction port 32. There is a problem that the distribution becomes uneven as it gets closer to, and becomes smaller as it goes away.

Such a problem is that when the technology is applied to an air conditioner,
It was not preferable in terms of air blowing characteristics, and some improvement measures were required.

Furthermore, the above-described conventional configuration is different from the ionization line 35 and the cathode plate 3
Since an electrostatic attraction is generated between the four electrodes, a phenomenon occurs in which each ionizing wire 35 vibrates. Therefore, each of the ionization lines 35
When the tension applied to the ion beam is constant, all the ion beams 35 resonate due to the vibration phenomenon, which causes a resonance noise.

This resonance sound impairs the noise reduction which is a characteristic of ion blowing, and some improvement measures are still required.

In view of the above-mentioned conventional problems, it is an object of the present invention to allow the air flow distribution unevenness at the discharge port to be arbitrarily set and to control the resonance sound.

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 as to become gradually shorter as the distance from the center side of the curvature of the air flow increases. .

With such a configuration, it is possible to suppress the difference between the air volume (wind velocity) on the center side of the curvature of the air flow and the air volume (wind velocity) on the far side, and eliminate the uneven distribution. Moreover, if the degree of the distance is set, an arbitrary air distribution distribution unevenness can be obtained.

Embodiment Hereinafter, the present invention will be described with reference to FIGS. 1 and 2 of the accompanying drawings showing an embodiment thereof.

In FIG. 1, reference numeral 1 is a blower device main body, which is provided with a suction port 2 and a discharge port 3. The suction port 2 and the discharge port 3 are provided on the surfaces adjacent to each other, and are configured so that the airflow bends at a substantially right angle. Cathode plates 4a, 4b, and 4c are arranged in parallel at a predetermined interval in a direction substantially perpendicular to the air flow. Reference numerals 5a, 5b, and 5c are ionizing rays, which are paired with the cathode plates 4a, 4b, and 4c. The distance l between each of the ionization lines 5a, 5b, 5c and the cathode plates 4a, 4b, 4c
₁ · l ₂ · l ₃ is set to be larger as it is closer to the suction port 2 and smaller as it is further away. That is, the distance between the electrodes is set to gradually decrease as the distance from the center of the bending of the air flow increases. 6 is the cathode plates 4a, 4
This is a power supply device for applying a high DC voltage between the b.4c and the ionizing wires 5a, 5b, 5c.

Next, referring to FIG. 2, description will be made on the results of experimentally determining the relationship between the distance between the cathode plate and the ionization line and the wind speed (air volume).

The experimental conditions are as follows.

Ionization wire diameter: about 0.1 mm (tungsten) Cathode plate thickness: about 0.9 mm (aluminum) Applied voltage: 0 to 15 KV Based on the above experimental conditions, the distance l between the cathode plate and the ionization line
When l = 10 mm and l = 15 mm were set and corona discharge was generated, a smaller wind speed (air volume) was obtained by reducing l = 10 mm as shown in FIG.

It is obvious that the distance 1 has a limit in consideration of the current environment (applied limit voltage, etc.), and the distance may be selected within an appropriate range.

Therefore, as shown in FIG. 1, each distance l ₁ · l ₂ · l
By setting ₃ to be gradually smaller, the air flow distribution at the discharge port 3 can be made uniform or can be arbitrarily set.

This can be explained as follows as the characteristic of the ionic wind when the corona discharge is generated continuously and stably by various related experiments by the inventors.

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

V∝ρ 0.5 (1) Further, the current density ρ when the electrode structure is specified is expressed by the equation (2) as the relationship between the applied voltage E and the interelectrode distance l.

From the equations (1) and (2), the relationship between the ion wind velocity V, the applied voltage E, and the inter-electrode distance 1 is expressed by the equation (3).

This is in agreement with the result of FIG. 2 confirmed by the experiment.

As a result, in the case of applying the configuration shown in the present embodiment to an air conditioner, even if it is necessary to configure a wind circuit in which the airflow is refracted at a substantially right angle or refracted at an arbitrary angle, the corona discharge unit is provided with such a configuration. By using it, the discharge air volume distribution can be improved.

Further, by changing the distances l ₁ , l ₂ , l ₃ , the electrostatic attraction force between the ionization lines 5a, 5b, 5c is different, so that even if the ionization lines 5a, 5b, 5c vibrate. The vibration frequencies are different, and as a result, they do not resonate with each other to generate a resonance sound.

In the present embodiment, the ionizing rays 5a, 5b, 5
The ionization lines 5a and 5 are installed so as to be separated from c.
Even if b.multidot.5c are arranged side by side in a line and the cathode plates 4a, 4b, 4c are arranged so as to gradually approach each other, the same operational effect can be expected, and the gist of the present invention is not deviated.

Advantageous Effects of Invention As described above, the present invention is a blower device having a wind circuit section in which an air current is deflected substantially at right angles. The distribution of can be uniformed or set arbitrarily,
In addition, resonance noise due to resonance between ionization lines can be suppressed, and a quiet air blowing effect can be obtained.

[Brief description 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 a relationship between a distance between a cathode plate and an ionization line in the air blower, and an air volume (wind speed). FIG. It is a basic block diagram of the air blower which shows an example. 1 ... Blower device main body, 2 ... Suction port, 3 ... Discharge port, 4
a · 4b · 4c ...... cathode plate, 5a · 5b · 5c ...... ionization _{lines, l 1 · l 2 · l} 3 ...... distance.

Claims (1)

[Claims] 1. A wind circuit for regulating an air flow flowing through the ionization line and the cathode plate at a substantially right angle in a main body of an air blower equipped with a cathode plate and an ionization line arranged at a predetermined distance. In the provided air blower, the plurality of cathode plates or ionization lines are arranged side by side in a direction substantially perpendicular to the air flow, and further ionization lines forming a pair with each cathode plate or cathodes forming a pair with each ionization line. An air blower in which the plate is arranged such that the distance between the cathode plate and the ionization line gradually decreases as the plate moves away from the center of the curvature of the air flow.