JPH029458A - Air cleaner - Google Patents

Abstract

PURPOSE:To maintain excellent dust collection performance whatever intake air volume may be by installing a discharge plate with an electric discharge rod vertically in a suction direction and in a rotatable manner with the longitudinal direction as a shaft core so that the discharge plate operates in response to an intake air. CONSTITUTION:If a high voltage is applied to a discharge device 16 in a standard operation, and air discharge occurs in an earthing element 20 on account of an electric discharge rod 18 and dust in the intake air passing through the earthing element is electrically charged. The charged dust is attracted by a charged filter 17 when passing through the filter 17 due to the mutually attracting force of electric charges. Then only the clean air passes through a fan 13 and is discharged from a discharge port 23. Although the forced operation is the same as in the standard operation, the discharge plate 19 is pushed and tilted film by the air because it is drawn in at high velocity. Consequently, the discharge rod 18 approaches the earthing element 20. In this case, a discharge current increases and the dust in the intake air is easily charged. Consequently, it is ensured that the dust will be electrically charged, if the air velocity is high.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a small air purifier installed in a car or the like.

BACKGROUND OF THE INVENTION Conventionally, this type of purifier has been equipped with a discharge device 2 that charges the air sucked from an intake port 1, as shown in FIG. Was.

In this case, high pressure is applied between the discharge needle 3 and the negative plate 4, and discharge occurs between them, giving an electric charge to the dust in the suction air passing therethrough.

A part of the charged dust is attracted to the negative plate 4 by the force of attracting electric charges, while the other part passes through the discharge device 2 and is attracted to the charged filter 6 provided behind it. Then, dust is filtered out and clean air is exhausted. 6
is a fan, and 7 is an exhaust port.

Problems to be Solved by the Invention The above configuration has a control circuit that switches the suction air volume, and for example, when switching between "strong" and "weak" in two stages, the current collection performance is higher than "weak". There was a problem that the .

To be more specific, when set to "strong", all input is lost to the motor that drives the fan 6, and the high voltage applied to the discharge device 2 is reduced. Further, since the wind speed is high, the dust passes through the discharge device 2 without being sufficiently charged, and even when it passes through the filter 5, the wind speed is higher and the dust is discharged without being attached.

As a solution to this problem, there is a method of controlling the input of the high voltage generation circuit to increase when the voltage is high, but the circuit becomes complicated and
If the high voltage is increased too much, safety issues such as insulation deterioration occur.

The object of the present invention is to solve the above-mentioned problems and to prevent the dust collection performance from deteriorating even during heavy operation.

Means for Solving the Problems The present invention solves the above-mentioned problems.In a discharge device for an air purifier with a control operation function that switches the air volume, a discharge plate having discharge needles formed thereon is provided perpendicularly to the intake direction. It is rotatable about the longitudinal direction and responds to the intake air, and the distance between the discharge needle and the ground body changes automatically depending on the wind speed.

Operation With the above configuration, in the case of "strong" operation with a large air volume, the discharge plate responds to the wind speed and the distance to the ground body becomes shorter. In that case, even if the high voltage for discharge does not change, the discharge rate increases, giving a large amount of electric charge to the dust in the suction air. Therefore, even at high wind speeds, dust is adsorbed while passing through the charged filter, providing excellent dust collection performance.

In addition, in the case of "weak" operation, the performance is the same as before, and the air consumption fJi is the same, so there is no waste, and "
strength".

Even in ``weak'' operation, there is no waste, and high concentration@performance is demonstrated.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 to 3, reference numeral 11 denotes an air purifier main body, which has a fan 13 driven by a motor 12 and a high pressure generation circuit 14 that generates high pressure.

A discharge device 18 is provided inside the intake port 16, and a charged filter 17 is provided behind it.

The discharge device 16 consists of a discharge plate 19 on which a plurality of discharge needles 18 are formed, and a grounding body 20. 18 is designed to rotate in accordance with the amount of suction air.

One end of the shaft 21 is attached to the inner wall of the main body, and the other end is connected to the output terminal 22 of the high voltage generation circuit 14.

23 is an exhaust port.

24 is a control circuit that changes the input to the motor 12 to enable selection between strong operation and standard operation, and to switch the suction air volume.

In the above configuration, it is normally used in standard operation, and when the room is very dirty, it is used in strong operation and the suction power is increased.

In the case of standard operation, as shown in FIG. 2, when a high voltage is applied to the discharge device 16, an air discharge is generated from the discharge needle 18 to the earth body 20, and the dust in the suction air passing therethrough is charged. When the charged dust passes through the charged filter 1, it is attracted by the attractive force of the charges, and only clean air passes through the fan 13 and is discharged from the exhaust port 23.

In the case of strong operation, the operation is the same, but because the suction wind speed is high, the discharge plate 19 is pushed by the wind and the discharge needle 18 touches the ground body 20, as shown in FIG. Get closer.

In that case, the discharge current increases, making it easier to charge the dust in the sucked air, and the dust is reliably charged even if the wind speed is high.

Conventionally, when the suction air volume was increased, input was taken to the motor 12, the high voltage decreased, and the amount of discharge decreased, but in the case of this embodiment, even if the high pressure decreases to some extent, the discharge distance approaches,
Since the amount of discharge increases, dust collection performance does not deteriorate.

In the case of standard operation, the discharge amount is set to a value that sufficiently corresponds to low wind speeds and reliably imparts an electric charge to dust, and no unnecessary power is consumed, making it a saving type.

Since the switching of the discharge amount is automatically performed using wind power, no operation is required and there is no burden on the user.

Effects of the Invention As described above, according to the present invention, in an air purifier in which the amount of suction air can be selected, the amount of discharge is automatically adjusted according to the amount of suction air. To provide an air purifier with high dust collection performance that can ensure excellent dust collection performance at any suction wind level without placing a burden on the air cleaner, and can be used economically and effectively.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views showing an embodiment of the present invention, FIG. 3 is a cross-sectional view of the same, and FIG. 4 is a cross-sectional view of a conventional example. 12...Motor, 13...Fan,
14... High voltage generation circuit, 16... Discharge device, 18... Discharge needle, 19... Discharge plate, 20... Earth body. , 21...axis,
24... Control circuit.

Claims (1)

[Claims] The discharge device includes a fan driven by a motor, a discharge device connected to a high voltage generation circuit, and a control circuit that controls the input of the motor. An air purifier comprising a grounding body that receives discharge from a discharge needle, and the discharge plate is rotatable about the longitudinal direction and is attached so as to respond to the air volume.