JPH02152561A - Air cleaner - Google Patents

Abstract

PURPOSE:To always maintain the specified anion quantity with respect to an inside volume of a chamber (vehicle) by providing an operation control section which controls the air flow rate by an electric fan, an anion generating section, and an anion quantity control section which controls the quantity of the anions to be generated. CONSTITUTION:An automatic or manual operation is discriminated and, for example, the manual operation is selected if the high-, middle- and low-speed continuous operations are selected by a switch 14. The on time and off time of pulses by an anion regulating section 11 are so controlled by the anion quantity control section 20 as to be made the same in the case of the middle-speed operation. A high voltage is, therefore, impressed to the anion generating section 4 in such a manner that the impression time and the non-impression time are the same. The quantity of the anions to be added at this time is so set as to be optimized. The pulse on time is so controlled as to be made shorter than the off time in the case of the high-speed operation and the impression quantity of the anions increased by an increase in the air flow rate is decreased. The control reverse from the high-speed operation is executed in the case of the low-speed operation and the impression quantity of the anions is increased. The quantity of the anions to be impressed is thus so maintained as not to exceed the optimum quantity in spite of a change in the air flow rate.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an air tlI purifier having an anion generating section.

(b) Prior art Technologies prior to the present invention include Japanese Utility Model Publication No. 56-53891, Japanese Patent Publication No. 61-2417, and Japanese Patent Publication No. 60-39.
There is an air purifier described in Japanese Patent No. 425. The air purifier is equipped with an anion generator, and in order to increase the ion concentration due to changes in anion generation due to voltage fluctuations in the high voltage applied to the electrodes of the anion generator,
By making one electrode movable or covering it with an air permeability suppressing electrode, the generation of anions is kept constant.

However, in the conventional technology, keeping the generation of anions constant means that the ventilation speed is constant, and the concentration in the passing air is constant.
As the ventilation rate increases, the amount of anions added to a given volume of the chamber will increase.

(c) Problems to be Solved by the Invention The present invention does not maintain a constant anion concentration in the air blown out from an air purifier, but instead maintains a constant anion concentration of 1% of the indoor (vehicle) volume. - The amount of anions (a degrees) is kept constant.

(d) Means for Solving the Problems The present invention provides an operation control unit that controls the amount of air blown by an electric blower that generates an air flow that passes through a filter, an anion generation unit formed in an air outlet, and an operation control unit. This problem is solved by a means formed by an anion amount control section that controls the amount of anions generated by the anion generation section in conjunction with the control of the electric blower.

In addition, when controlling the operation control unit that controls the electric blower with the dirt detection unit that detects the dirt concentration of the indoor air and changing the air flow rate, the anion amount control unit also takes into account the detection signal from the dirt detection unit. It will be possible to control it.

(E) Function The present invention controls the amount of anions generated by the anion generating section in conjunction with changes in the amount of air blown by the electric blower, and controls the amount of anions generated so that it is inversely proportional to the increase/decrease in the amount of air blown.
(inside the car) is kept approximately constant.

(F) Embodiment FIG. 2 is an electric circuit diagram of the air cleaner of the present invention, and FIG. 1 is a flowchart showing the main operations of the electric circuit of the air cleaner of the present invention.

The air purifier rotates a blower blade using an electric motor 1 whose speed is adjusted to high, medium, and low speeds. A filter is installed in the air flow path to collect dust contained in the air flow. An anion generating section 4 formed by a needle-like electrode 2 and a plate-like counter electrode 3 is disposed at the blow-off port. A DC high voltage is applied to the needle electrode 2 and the plate-shaped counter electrode 3 from the DC high voltage section 5, and anions are added to the air flow passing through the anion generation section 4. 11jI Application of the DC high voltage from the DC high voltage unit 5 to the ion generating unit 4 is controlled by a switch body 7 formed of a relay, etc., which is controlled to turn on and off by a control transistor 6, and the energization time is controlled. The amount of anions added to the air stream can be increased by [t].

The speed control of the electric Ja1 is the speed AII drawn from the motor winding.
The L114 child is switched by a switch body 8 such as a triunk.

The switch body 8 and the control transistor 6 are controlled by a control body 9 formed by a microcomputer. The control body 9 includes an operation control unit lO that controls the switch body 8;
An anion mvi unit 11 that controls the control transistor 6, a display control unit 13 that controls the display 12 such as a light emitting diode, and a switch 14.1 that sets the operation of the air purifier.
5, a gas concentration determination section 19 that determines input from the gas sensor part 17 and the gas concentration detection section 18, an anion amount control section 20, and each control section 1O113, 20. It has an adjustment section 11 and a main control section 21 that centrally controls the input section 16 and determination section 19.

Each time the switch 14 is operated and turned on, the key human power section 16 is turned on.
The operation of the air purifier is sequentially switched between automatic operation in which the speed of the electric motor 1 is automatically controlled according to the input from the gas sensor part 17, high-speed operation, medium-speed operation, and low-speed operation. .

When the switch 15 is turned on, the air cleaner is stopped as determined by the key operator 16. In response to the settings made by the switch 14, the display control section 13 switches the display 12 on and off, and the operation control section 10 adjusts the speed of the electric motor 1.

The anion adjustment section 11 is controlled by the anion amount control section 20 and adjusts the pulse width applied to the base terminal of the control transistor 6. The anion amount control section 20 is the operation control section 10
and a signal from the gas concentration determination g319.

First, when high-speed, medium-speed, and low-speed continuous operation is selected with the switch 14, manual is selected in the judgment of 1 automatic or manual j as shown in Fig. 1, and processing is performed for each selected operation mode. Move. In medium speed operation, the ON time and OFF time of the pulse by the anion adjustment unit 11 are set to be the same.
This will be controlled by the anion amount control section 20. Therefore, a high voltage is applied to the anion generating section 4 so that the application time and the non-application time are the same, and the amount of anions added at this time is set to be the optimum amount.

In high-speed operation, the ON time of the pulse by the anion adjustment unit 11 is controlled to be shorter than the OFF time.

Therefore, the time for applying high voltage to the anion generator 4 is shorter than during medium-speed operation (which reduces the amount of anions applied that increases due to the increase in ventilation volume, and moderates the amount of anions added). As with fast driving, this is the optimum amount.

In the case of low-speed operation, the ON time of the pulse by the anion adjustment unit 11 is controlled to be longer than the OFF time.

Therefore, the application time of high voltage to the C% anion generating section 4 becomes longer than during medium-speed operation, and the amount of anions applied, which decreases due to the decrease in ventilation volume, increases and the amount of anions added increases. The optimum amount is set as in the case of medium-speed operation.

Even if the rotational speed of the electric motor 1 changes and the amount of ventilation changes, the amount of anions applied is controlled to remain approximately constant.

When automatic operation is selected in the switch 14, the speed of the electric motor 1 is adjusted according to the gas concentration detected by the gas sensor part 17. Assuming that the detected value by the gas sensor part 17 is R, the gas concentration determination unit 19 compares it with set values Ro, Rs, and Rs, and the magnitude relationship is R□<Rt<Rt. When the detected value R is in the relationship Rt<R<R2, the engine is operating at medium speed, when the relationship RO<H is, the engine is operating at high speed, and when the relationship Ro<R<Rs is, the engine is operating at low speed.

Control of the amount of anions upon transition to each operation is the same as in the manual case. If R<RO, the process will stop and will wait until R becomes larger than Ro.

Controlling the amount of anions generated by the dangerous ion generation section 20 in conjunction with the control of the electric motor 1 by the operation control section 1O means direct control of the anion amount control section 20 by the operation control section 10 when manual operation is selected. , and indirect control of the anion amount control section 20 by the gas concentration determination section 19 when automatic operation is selected.

Further, in the present invention, the control of the amount of anions generated by the anion amount control section refers to control in which the amount of negative ions applied is kept substantially constant or inversely proportional to the amount of ventilation regardless of changes in the amount of ventilation.

(G) Effects of the Invention According to the present invention, even if the amount of ventilation changes, the amount of anions applied does not exceed an appropriate amount, and the adverse effects on the human body are suppressed.

In addition, control that takes gas concentration into account can also prevent ionized dust from adhering to indoor walls.

[Brief explanation of the drawing]

The figures show the invention, FIG. 1 is a flowchart, and FIG. 2 is an electric circuit diagram. DESCRIPTION OF SYMBOLS 1... Electric motor, 4... Anion generation amount, 9... Control body 10... Operation control part, 19... Gas concentration determination part, 20... Anion amount control part. Figure 1

Claims (1)

[Claims] 1. An electric blower that generates airflow that passes through the filter, an operation control section that controls the amount of air blown by the electric blower, an anion generation section formed at the outlet, and an operation control section that is linked to control of the electric blower. and an anion amount control section that controls the amount of anions generated by the anion generation section.