JPH02160011A - Air cleaner - Google Patents

Abstract

PURPOSE:To mitigate the cold felt by the human body by changing the control range of the supply air quantity by an operation control part to the control on the low-speed side based on the detected temp. lower than the set value by a room temp. discriminating part in an operation control changing part. CONSTITUTION:The contamination of room air is detected by a contamination discriminating part 9, and the room temp. is detected and discriminated by a room temp. discriminating part 8. An air current passing through a filter is generated by an electric blower, and the air quantity supplied by the blower is controlled by the operation control part 3 based on the detection signal from the contamination discriminating part 9. Furthermore, the control range of the supply air quantity by the operation control part 3 is changed by the operation control changing part 4 to the control on the low-speed side based on the detected temp. lower than the set value by the room temp. discriminating part 8. As a result, the cold felt by the human body is mitigated.

Description

[Detailed description of the invention] (Fields of industrial use) The present invention relates to an air cleaner that purifies indoor air.

(II) Prior Art As a technology prior to the present invention, there is an air cleaner equipped with a temperature sensor described in Japanese Patent Publication No. 61-52731. Since room temperature rises when combustion equipment (heaters) that pollute indoor air are used, air purifiers start operating when a temperature sensor detects the rise in room temperature.

However, even though the room temperature has risen in the winter, when an air purifier is operated, the wind hits the human body and makes the person feel cold.

(c) Problems to be Solved by the Invention The technical object of the present invention is to provide an air cleaner that reduces the feeling of cold in the human body.

(d) Means for Solving the Problems The present invention provides a dirt determination unit that detects dirt in indoor air, a room temperature judgment unit that detects and judges indoor temperature, an electric blower that generates an air flow that passes through a filter, and a dirt determination unit that detects dirt in indoor air. An operation control section that controls the amount of air blown by the electric blower based on the detection signal from the determination section, and a control range of the amount of air blown by the operation control section to control on the low speed side based on the detection of a temperature below a set value by the room temperature judgment section. This problem is solved by means of forming an air purifier by changing the operation control changing section.

(f) Function In the present invention, when the temperature detected by the room temperature detection section is below a set value, the operation control change section changes the air flow control of the electric blower by the operation control section so that it is controlled at a low speed side.

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

The air cleaner is equipped with a dust collector that collects dust contained in the air flow when an electric motor 1 rotates a blower blade.

The speed control of the electric motor 1 allows switching between strong operation, medium operation, and weak operation. To control the speed of the electric all, a switch body 2 such as a triac is connected to each speed control terminal, and the switch body 2 is controlled by the operation control section 3.

The operation control section 3 is controlled by the main control section ll, and the main control section 4
A key human power unit 7 that determines and inputs the operation of the switch 5.6, a room temperature determination unit 8, a gas concentration determination unit as a dirt determination unit, and a display control unit 11 that blinks the display 10 are connected. are doing. The display body 10 is formed of a light emitting diode or the like. The operation control section 3, the main control section 4, the key power section 7, the display control section 11, the gas concentration determination section 9, and the room temperature determination section 8 may be formed of transistors, resistors, capacitors, comparators, amplifiers, etc. However, it may also be formed using a microcomputer that has been used to control many electrical devices in recent years.

When the switch 5 is turned on, the air purifier starts operating, and the operation mode becomes automatic operation in which inputs from the gas concentration determination section 9 and the room temperature determination section 8 are taken into account. The switch 5 is cyclically switched to automatic operation, strong operation, medium operation, weak operation, and automatic operation depending on the number of times the switch 5 is turned on. strong, medium,
Each weak operation is called a manual operation, and the set operation is a continuous operation in which the speed of the electric motor 1 does not change. The display 10 changes blinking depending on the operation set by the switch 5. When the switch 6 is turned on, the air cleaner stops.

The gas concentration determining section 9 inputs the change in the gas sensor part 12 to the gas concentration detecting section 13 and calculates the input value as the detected gas concentration R and the set values R8, Rt, R2, (R,<R,<
The relationship is R. ). Setting [R,,
By comparing R1 and R2 with the detected gas concentration R, the electric motor 1 is automatically controlled to perform strong operation, medium operation, and weak operation. When the detected gas concentration R is R2≦R, strong operation is performed, and R1≦R<
If it is R2, it will be in medium operation, if Ro≦R<R, it will be in weak operation, and if it is R or R6, it will stop.

However, in the present invention, the automatic control described above is controlled in addition to the determination by the room temperature determining section 8.

The change in the temperature sensor portion 111 is input to the room temperature detection section 15 and then inputted from the room temperature detection section 15 to the room temperature determination section 8 . The temperature sensor portion 14 is formed of a thermistor. The room temperature detection section 15 is connected to a room temperature adjustment section 16 that changes and sets a high temperature setting value T2 and a low temperature setting value T1 that are compared with the room temperature detection value T from the temperature sensor part 14. The room temperature control section 16 is formed by means such as a resistor I/Q switch, a variable resistor, or the like. The set values T2 and T2 by the room temperature control unit 16 can be set as appropriate according to the user's preference. For example, in winter, T2 is set to 25 degrees, T1 is set to 15 degrees,
In the summer, both To and T2 are set to 15 degrees. This set value is the temperature at which you do not feel cold when the air is blown.

The air cleaner is operated based on the flowchart t shown in FIG. When driving starts, you will be asked whether it is automatic or manual operation.
If automatic operation is selected, the set value T1. T2
The room temperature detection value T is determined based on the following. Room temperature detection value T is T
>T2, the gas concentration determination unit 9 automatically switches between strong, medium, and weak operation and stop. TI<T≦
T2 means medium/weak! Performs operation that automatically switches between running and stopping. When T≦T, operation is performed that automatically switches between weak operation and stop.

Therefore, when the room temperature drops, the air speed (which indicates the air volume if the outlet is constant) is controlled so that it only changes at low speeds, allowing air purifying operation that does not make the user feel cold. It will be done.

However, if the room is normally dirty, the necessary air purification is performed by the above-mentioned control that takes into account the room temperature, and optimal operation is performed so that the user does not feel cold.

As a countermeasure against this, if a forced strong operation mode is incorporated when an abnormal gas concentration is detected, the performance of the air purifier will be improved. For this purpose, an abnormal gas concentration judgment value R1 is set, and when R1≦R, the control is switched to strong operation, and until FIR3>R, the control is performed with priority over other controls. . Although indoor dirt is detected by gas concentration, the dirt determination section may be formed by a smoke sensor using an optical sensor.

(G) Effects of the Invention The present invention controls the amount of air blown within a range that corresponds to the room temperature, and when the room temperature is low, it is controlled at a low speed.

[Brief explanation of the drawing]

The figures illustrate the present invention, with FIG. 1 being a flowchart and FIG. 2 being an electrical circuit diagram. DESCRIPTION OF SYMBOLS 1... Electric motor, 3... Operation control part, 8... Room temperature determination part, 9... Gas concentration determination part.

Claims (1)

[Claims] 1. A dirt determination section that detects dirt in the indoor air, a room temperature judgment section that detects and judges the indoor temperature, an electric blower that generates an air flow that passes through a filter, and an electric blower that generates an air flow based on the detection signal from the dirt judgment section. and an operation control change unit that changes the control width of the airflow amount by the operation control unit to control on the low speed side based on the detection of a temperature below a set value by the room temperature determination unit. Cleaner.