JP2553358Y2 - Air cleaner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner having a dirt sensor for detecting dust particles in the air.

[0002]

2. Description of the Related Art In a conventional air purifier, an air inlet 2 is provided in front of a main body 1 as shown in FIG. ing. A cleaning means 10 is provided inside the suction port 2. The cleaning means 10 comprises an ionizing wire 11, an ionizing electrode 12, a dust collecting filter 13, and a dust collecting electrode 14.
1 and the ionized electrode plate 12 are provided behind the suction port 2,
A dust collecting filter 13 and a dust collecting electrode plate 14 are provided behind the ionizing wire 11 and the ionizing electrode plate 12.

The ionizing wires 11 are made of a tungsten wire or the like having a diameter of about 0.1 mm, and a plurality of ionizing wires 12 are alternately arranged in parallel from the upper side to the lower side. A dust collecting filter 13 made of a non-woven fabric such as a charged polypropylene fiber and a dust collecting electrode plate 14 made of a metallic lath plate or the like, which are provided behind the ionizing wire 11 and the ionizing electrode plate 12, overlap with each other.
The inside of the main body 1 is partitioned at the center so as to be perpendicular to the ionization wire 11 and the ionization electrode plate 12.

[0004] A blower 20 is provided below the outlet 3. The blower 20 includes a fan 21 for sucking and discharging air and a motor 22 for driving the fan 21. A drive shaft of the motor 22 and the fan 2
1 is connected so that a fan 21 is installed on the back surface of the main body 1 so as to be parallel to the casing 21. A casing 4 is provided around the fan 21 so that the air is sucked from the inlet 2 by the blower 20 and flows smoothly to the outlet 3. Is provided.

A dirt sensor for detecting the amount of dust particles by emitting infrared light to the upper end of the suction port 2 of the air purifier body 1 and detecting the infrared light that scatters and scatters on the dust particles floating in the air. 30 are provided. The dirt sensor 30 is covered with a sensor cover 31 having air permeability.

The dirt sensor 30, the cleaning means 10 and the blower 20 are connected to and controlled by a control circuit.

[0007] When the dirt sensor 30 installed above the suction port 2 detects dirt in the room and a dirt signal is sent from the dirt sensor 30 to the control circuit, the control circuit sucks air. It is determined that it is necessary to perform a cleaning operation in which the air is sucked in from the port 2 and the dust particles contained in the air are removed and the clean air is discharged from the outlet 3, and the blowing device 20 and the cleaning device 10 are operated.

As a result, the motor 22 of the blower 20 is driven by the control circuit, the fan 21 interlocked with the motor 22 via the drive shaft is rotated, and the air containing dust particles is absorbed from the suction port 2. The air passes between the positive ionizing wire 11 and the ionizing electrode 12 applied to the electrical high voltage by the control circuit. At this time, corona discharge occurs in the ionizing wire 11 and the ionizing electrode plate 12 between the two electrodes, and fine dust and tobacco smoke particles that are invisible are positively charged. At this time, a propulsive force according to Coulomb's law acts on the positively charged dust between the two electrodes, and the particles of the dust collect on the dust collection filter 13 side, which is negatively charged by the high voltage portion. It is absorbed in the direction of the dust plate 14. As described above, the air that has passed through the dust collection filter 13 passes through the periphery of the motor 22 by the casing 4 with the dust removed by the dust collection filter 13 and is sent to the fan 21 side. It is discharged to the outside through the discharge port 3 under the action.

[0009]

According to such a conventional technique, it is difficult to know how much air has been purified in the process of sucking air from an inlet and exiting from an outlet. It was hard to understand that was purified. In addition, there is a disadvantage that it is difficult for the user to understand whether or not the vehicle is in a clean operation.

In addition, since it is necessary to notify the user of the time for replacing the filter, the user removes the dust collection filter from the main body and checks the degree of contamination, or sets the filter for a certain period after using the dust collection filter. Irrespective of the frequency of use of the device, when the period comes, it is very inaccurate to display it on the LED or the like and notify the user.

[0011]

According to an air purifier for performing a cleaning operation in which air is sucked in from an inlet, dusts contained in the air are removed, and clean air is discharged from an outlet. It is composed of cleaning means including a dust collecting filter and the like for collecting the dust particles while passing air, a fan for sucking the air and discharging the clean air, and a motor for driving the fan. A dirt sensor provided at both the suction port and the discharge port for detecting dust particles in the air; and a dirt degree of the dirt sensor on the suction port side and a dirt sensor on the discharge port side during the clean operation. the difference between the dust concentration is compared with a reference value, if the reference value of the atmospheric determined that during normal operation, and a control circuit to determine that in the case of small a replacement timing of the filter, at the inlet side sensor Detect L to display the dirt level in a multi-step
The ED and the degree of contamination detected by the outlet side sensor are multi-staged.
LED displayed on the floor and a normal LED determined by the control circuit
An LED that indicates that the vehicle is running and a lamp that is determined by the control circuit.
And a display unit ing from an LED for displaying the Iruta replacement time.

[0012]

[Operation] The display unit displays the inlet-side contamination level and the outlet-side contamination level on the display unit, and the cleaning operation and the filter replacement time are also displayed on the display unit, so that the user can obtain cleanliness and clean operation. You can check whether you are doing, and tell exactly when to replace the filter.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the air purifier according to the present invention will be described below with reference to FIG. The same parts as those in the related art are denoted by the same reference numerals, and description thereof will be omitted.

The internal structure of the air purifier main body 1 is as follows.
Cleaning means 10 comprising an ionizing wire 11, an ionizing electrode plate 12, a dust collecting filter 13 and a dust collecting electrode plate 14 inside the suction port 2 in front of the main body 1; 3 is the same as the prior art in which a fan 21 and a blower 20 composed of a motor 22 for driving the fan 21 are provided below.

However, in the present invention, the exhaust port 3 is also provided with a dirt sensor 40 for detecting dust particles in the air, and the dirt sensor 40 is covered with a gas-permeable sensor cover 41.

An LED 6 for displaying the degree of contamination on the side of the suction port 2 and an LED 7 for displaying the degree of contamination on the side of the discharge port 3 are provided in front of the discharge port 3 at the back of the top plate of the main body 1. When it is determined that the cleaning operation is being performed, the display unit 5 provided with the LED 8 that indicates that the cleaning operation is being performed and the LED 9 that indicates the replacement time of the filter is provided.

FIG. 2 is a circuit block diagram of the present invention, which will be described. The inlet side dirt sensor 30 and the outlet side dirt sensor 40 are connected to a control circuit 70 via an arithmetic circuit 50 such as a comparator. The control circuit 70 has a display unit 5 for displaying the degree of contamination using LEDs or the like, an operation unit 60 for setting automatic operation or manual operation, etc., a fan 21 and a motor 22 for driving the fan 21. It is connected to the means 20 and the cleaning means 10 such as the ionizing polar wire 11 and the power supply, and controls the air purifier.

When the operation unit 60 is set to the automatic operation, a signal of the automatic operation is transmitted to the control circuit 70, and the control circuit 70 operates the inlet-side sensor 30 and the outlet-side sensor 40 via the arithmetic circuit 50.

When the suction port side sensor 30 detects contamination, a signal of the contamination is sent from the suction port side sensor to the control circuit 70, and the control circuit 70 drives the motor 22 of the blowing means 20. The fan 21 is rotated, and at the same time, the control circuit 70
When a high voltage is applied to the ionizing electrode plate 12, air containing dust particles is absorbed from the inlet 2, the dust particles are collected by the dust filter 13, and
The cleaning operation released from the outlet 3 by the fan 21 is started, and the degree of contamination on the side of the inlet 2 is displayed on the display unit 5 in multiple stages by the LED 6.

When the inlet sensor 30 is activated, the outlet sensor 40 is activated at the same time, and the display unit 5 displays the degree of dirt on the outlet 3 by the LED 7 in multiple stages .

During the above-described clean operation, the degree of contamination of the air detected by the outlet side sensor 40 is compared with the degree of contamination detected by the inlet side sensor 30 by the arithmetic circuit 50, and the degree of contamination of the inlet side sensor 30 is determined. The degree of contamination of the sensor 40 of the discharge port is subtracted from the degree of contamination of.

The difference thus subtracted is compared with a certain reference value initially set, and if the difference is larger than the reference value,
The display unit 5 determines that the normal operation is being performed, and indicates the LE of the clean operation.
D8 is turned on. On the other hand, when the degree of contamination detected by the inlet side sensor 30 is smaller than a predetermined reference value by subtracting the degree of contamination detected by the outlet side sensor 40, an indication of filter replacement is displayed. Is turned on by the LED 9 on the display unit 5.

When the dirt in the air is no longer detected by the suction side sensor 30, the operation of the cleaning means 10 and the blower 20 is stopped via the control circuit 70, and the suction side sensor 30 removes the dirt. It returns to the standby state until it is detected.

When the suction port side sensor 30 does not detect dirt in the air even though the user himself feels dirt in the air, the operation unit should be set to manual operation and clean operation should be performed. Can be.

[0025]

Effects of the invention] As described above, the air cleaner of the present invention is,
The difference between the suction inlet side of the dust concentration and dust concentration of the exhaust port side calculated by the arithmetic circuit, by displaying on the display unit or cleaning operation or filter replacement by the value of the difference, clean luck to the user
It is possible to indicate the exact time for changing the filter or replacing the filter. In addition, the display unit displays the contamination detected by the inlet sensor.
LED with multi-level display and discharge side sensor
LED that displays the detected dirt level in multiple stages
Since it is provided independently, the user does not
Of the degree of contamination, and at the same time
The outlet air purified by the filter
At this time, it is possible to know the degree of contamination.

[Brief description of the drawings]

FIG. 1 is a sectional view of an air purifier according to an embodiment of the present invention.

FIG. 2 is a block diagram of an electric circuit of the air purifier according to the present invention.

FIG. 3 is a front view showing a display unit of the air purifier according to the present invention.

FIG. 4 is a cross-sectional view of an air cleaner according to an example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier main body 2 Inlet 3 Outlet 4 Casing 5 Display part 6 LED which shows the degree of dirt on the inlet side 7 LED which shows the degree of dirt on the outlet side 8 LED which shows that it is performing the clean operation 9 It shows the exchange of the filter LED 10 to be cleaned 11 Cleaning means 11 Ionizing line 12 Ionizing electrode plate 13 Dust collecting filter 14 Dust collecting electrode plate 20 Blowing means 21 Fan 22 Motor 30 Inlet side dirt sensor 31 Inlet side dirt sensor cover 40 Outlet side dirt sensor 41 Outlet Side dirt sensor cover 50 Operation circuit 60 Operation unit 70 Control circuit

Claims (1)

(57) [Scope of request for utility model registration] 1. An air purifier for performing a cleaning operation in which air is sucked in from an inlet, dust particles contained in the air are removed, and clean air is discharged from an outlet, wherein the sucked air is passed through the air cleaner. A cleaning unit including a dust collection filter for collecting the dust particles, a fan for sucking the air and discharging the clean air, and a blowing unit including a motor for driving the fan; A dirt sensor provided at both the inlet and the outlet to detect dust particles in the air, and the difference between the dirt level of the dirt sensor on the inlet side and the dirt level of the dirt sensor on the outlet side during clean operation. is compared with a reference value, in the case of larger than the reference value it is determined that during normal operation, and a control circuit to determine that in the case of small is time to replace the filter, the dust concentration detected by the inlet-side sensor multi Display in the floor
LED and the degree of contamination detected by the outlet sensor
LED is displayed in multiple stages, and the control circuit determines
LED indicating normal operation and the control circuit determine
It was equipped with a Ru display name from an LED to display a filter change time, the air purifier.