JPH11165018A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with a difference of individual sensitivities to noise and the discharge wind velocity, etc., and to give max. air cleaning effect to a user within an allowable range. SOLUTION: An operational part 23 having a rotary type knob 23a, five pieces wind volume display LEDs 23b, a wind volume displace device 23c, a rotary position display 23d for confirming an operation state of the rotary knob 23a, and a wind volume display 23e corresponding to a lighting state of the wind volume display LEDs 23b, is disposed on a specified position of an air cleaner main body, and a motor is driven to attain a discharge wind volume set with the knob 23a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier, and more particularly to an air purifier for purifying indoor air by inhaling indoor air, purifying the air, and discharging the air again into the indoor air.

[0002]

2. Description of the Related Art Conventionally, various air purifiers have been provided. In particular, in recent years, human health has become an important concern, and from this viewpoint, the importance of air purifiers has been recognized again. In these conventional air purifiers, except for the special mode operation in which the discharge air volume is automatically changed according to a predetermined program, the indoor air contamination state, the air temperature, the life rhythm of the air purifier user, etc.
A configuration is adopted in which the user can arbitrarily set the discharge air volume in about 3 to 5 steps according to various conditions.

[0003]

In the above-mentioned conventional air purifier, the discharge air volume of about three to five steps set in advance as a settable discharge air volume is, for example, an average user average. It is set in advance in accordance with various usage conditions. However, when the user is particularly worried about noise at bedtime or when using an air purifier that aims to apply clean air directly to the user, noise that can be tolerated by the user can be obtained. In the upper limit of the level, the discharge air amount, and the like, a certain degree of variation occurs due to a difference in individual sensitivity.

[0004] For example, in the summer, a constant wind of 0.6 to 1.2 m / s (0.2 m / s) is applied to seven male and five female subjects.
s) and the wind speed (Vpr) at which the wind strength is just right was obtained, the results shown in Table 1 were obtained. The other experimental conditions were as follows: air temperature was 28 (± 1 ° C),
The humidity is 40 to 60%, the wind speed is 0.1 to 1.7 m / s, the uniform is worn, and the chair is in a resting state.

[0005]

[Table 1]

As is apparent from Table 1, the wind speed at which the wind intensity is just right is 0.6-1. It can be seen that variations (large variations) occur in the range of 2 m / s (comfort and environmental factors (3) comfort and "turbulence of wind",
Motoyasu Kamata, Yasuo Kuwasawa, Institute of Bu
ilding Energy Conservatio
n'90.11, p. 38-43).

It is also known that the minimum audible threshold value varies with age and that the minimum audible threshold value differs for men and women. Therefore, it is easily predicted that the level of noise that can be endured as noise greatly varies depending on age and gender. On the other hand, considering the purpose of use of the air purifier, it is preferable that the discharge air volume be as large as possible.

Therefore, in a conventional air purifier in which only about 3 to 5 discharge air volumes are set, there is a very high possibility that there is no air volume corresponding to the upper limit for the user. If there is no airflow corresponding to the upper limit of the air purifier, there is a disadvantage that the benefit of the air purifier cannot be maximized.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can cope with individual differences in sensitivity to noise, discharge wind speed, etc., and use the maximum air cleaning effect within an allowable range. The purpose is to provide an air purifier that can affect people.

[0010]

The air purifier according to claim 1 includes air volume setting means for setting a clean air discharge air volume by the air blowing device, and as an air volume setting device, can respond to individual differences in sensitivity, and In this case, a set value of the discharge air volume of the number of stages at which the maximum clean air discharge air volume can be set within the sensitivity range is set in advance.

The air purifier according to the second aspect employs at least one of noise and discharge wind speed as individual differences in sensitivity. The air purifier according to claim 3 employs, as the air volume setting means, one in which the difference between the set values of the discharged air volumes in adjacent stages is set to be larger as the amount of the clean air discharged from the blowing device is larger. .

According to a fourth aspect of the present invention, there is provided an air purifier which employs, as the air volume setting means, a device capable of instructing that the current clean air discharge air volume should be reduced.
An air purifier according to a fifth aspect of the present invention adopts an air purifier having an operation knob as the air volume setting means, and which can set a clean air discharge air volume at a desired stage by operating the knob.

According to a sixth aspect of the present invention, there is provided the air purifier, wherein the air flow rate setting means includes an operation means for selecting a preset discharge air flow rate set value at any stage, and a fine adjustment of the selected discharge air flow rate set value. And an auxiliary operation means for performing the operation. The air purifier of claim 7 further includes display means for displaying the set discharge air volume.

The air purifier according to claim 8 employs, as the display means, one that includes a plurality of light emitting elements and drives the number of light emitting elements corresponding to the set discharge air volume. The air purifier according to claim 9 is configured as:
Including a smaller number of light emitting elements than the number of discharge air volume setting values,
A device that drives the same number of light emitting elements corresponding to a plurality of discharge air volumes is employed.

According to a tenth aspect of the present invention, as the display means, the number of discharge air volumes for driving the same number of light emitting elements is smaller when the discharge air volume is small than when the discharge air volume is large. What is set so as to be adopted is adopted. The air purifier of claim 11 has a clean air discharge port for discharging clean air on the front surface of the air purifier body.

[0016]

According to the air purifier of the present invention, the amount of clean air discharged by the blowing means can be set by the air amount setting means. Then, in the air volume setting means, the discharge air volume set value of the number of stages capable of responding to individual differences in sensitivity and setting the maximum clean air discharge air volume within the range of sensitivity of each individual is set in advance. Therefore, it is possible to cope with individual differences in sensitivity, and to give a maximum air cleaning effect to the user within an allowable range.

In the case of the air purifier of the second aspect, since the individual difference in sensitivity is at least one of noise and the discharge wind speed, in addition to the effect of the first aspect, the sensitivity of the individual depends particularly on the sensitivity of the individual. Noise, discharge wind speed, etc. According to the air purifier of the third aspect, as the air flow rate setting means, the larger the difference between the discharge air flow rate setting values in adjacent stages is set as the larger the clean air discharge air flow rate by the blower means, the larger the difference. Therefore, in addition to the effect of claim 1 or claim 2, an increase in the number of discharge air volume setting values can be suppressed.

According to the air purifier of the present invention, since the air flow rate setting means is capable of instructing that the current clean air discharge air flow rate should be reduced, noise, discharge wind speed, etc. Can respond to individual differences in susceptibility to air, and can exert the maximum air cleaning effect on the user. Further, even when the number of discharge air volume setting values is increased, it is possible to quickly reach the target discharge air volume.

In the air purifier of the present invention, an operation knob is provided as the air volume setting means, and the air volume can be set in a desired stage by operating the knob. Therefore, in addition to the operation of any one of claims 1 to 4, the number of steps for selecting the clean air discharge air volume can be easily increased without complicating the operation mechanism, and thus the clean air discharge Changing the air volume steplessly can be easily achieved.

In the air purifier of the present invention, as the air flow rate setting means, an operation means for selecting a preset discharge air flow rate set value at any stage, and a fine adjustment of the selected discharge air flow rate set value. Since the apparatus including the auxiliary operation means for performing the adjustment is employed, the operation for realizing a desired discharge air volume can be simplified in addition to the operation of any one of the first to fifth aspects.

The air purifier according to claim 7 further includes a display means for displaying the set discharge air volume. Confirmation of the discharge air volume can be easily achieved.
In the air purifier of claim 8, as the display means,
Since a light emitting element including a plurality of light emitting elements and driving the number of light emitting elements corresponding to the set discharge air amount is employed, in addition to the operation of claim 7, the confirmation of the set discharge air amount is driven. This can be easily achieved based on the number of light emitting elements present.

In the air purifier of the ninth aspect, the display means includes a number of light emitting elements smaller than the number of discharge air volume setting values, and an equal number of light emitting elements corresponding to a plurality of discharge air volume. Since the driving device is employed, in addition to the function of claim 7, the number of driven light emitting elements is prevented from changing even when the change in the discharge air volume is small, and the discharge air volume based on the number of light emitting elements is reduced. Confirmation can be simplified.

In the air purifier of the tenth aspect, the number of discharge air volumes for driving the same number of light emitting elements as the display means is such that the number when the discharge air volume is small is larger than the number when the discharge air volume is large. In addition to the effect of claim 9, it is possible to set the number of discharge airflows for driving the same number of light emitting elements in accordance with the change rate of the discharge airflow. Consequently, it is possible to achieve the display of the discharge air volume in accordance with the feeling received by the user using a small number of light emitting elements.

According to the eleventh aspect of the present invention, the air purifier has a clean air discharge port for discharging clean air on the front surface of the air purifier body. In addition to the function, even a front-blown air purifier that is highly likely to cause individual differences in sensitivity to noise, discharge air volume, and the like due to its intended use can be used comfortably.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an air purifier according to the present invention will be described in detail with reference to the accompanying drawings. FIG.
1 is a front view showing an embodiment of the air purifier of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG.

This air purifier has a suction grille 22 on the back side of a rectangular cylindrical casing 21, an operation section 23 at a predetermined position on the front side, and a plurality of columns 2 at the center.
4 and a motor 26 supported by the back plate 25. The motor 26 has a rotating shaft protruding in a direction toward the inlet grill 22, and an impeller 27 is fixed to the rotating shaft. Therefore, the rectangular cylindrical casing 2
The opening on the side opposite to the inlet grille 22 mounting portion is the clean air outlet 20. Further, a filter member 28 is provided inside the inlet grill 22, and the filter member 28 and the impeller 27 are provided.
And a partition plate 29 for guiding the suction air to the impeller 27 effectively. The impeller 27 is preferably of a centrifugal type, such as a turbo fan. This is because when a filter having a high collection efficiency is used as the filter member 28, a large static pressure is required for the air volume, and this requirement is satisfied.

However, the structure of the air purifier is not limited to those shown in FIGS. 1 and 2, but may be any air purifier capable of sucking and purifying indoor air and discharging the purified air again into the room. I just need. FIG. 3 is a block diagram showing an electrical configuration of the air purifier shown in FIGS. An operation state of the operation unit 1 (operation unit of the operation unit 23 for setting the discharge air volume) is detected by the state detection unit 2 and a detection signal is supplied to the microcomputer 3. The microcomputer 3 determines which stage is selected by using the detection signal as an input, reads a corresponding set value from the storage unit 4 based on the determination result, and outputs a motor control signal based on the read set value. Motor 2
6 is driven.

The storage unit 4 is capable of responding to individual differences in sensitivity to at least one of noise and discharge air velocity, and setting a discharge air flow set value of a number of steps capable of setting a maximum clean air discharge air flow within the range of sensitivity of each individual. Are preset. Here, the number of preset discharge air volume setting values should be able to correspond to individual differences in sensitivity. Since it has no practical meaning, it can be reduced within a range where a difference in noise and discharge wind speed can be felt. In addition, there are differences in sensitivity among individuals, such as noise, discharge air volume,
Draft sensation, cold / hot sensation, suction air velocity in a pre-suction air cleaner, and the like can be exemplified. Further, the discharge air volume and the suction wind speed are used as concepts including the rotation speed of the motor or the impeller.

FIG. 4 is a front view showing an example of the operation unit 1. The operation unit 1 has a pair of operation buttons 1a and 1b for selecting a preset discharge air volume setting value. Here, the operation button 1a is for increasing the set value of the discharge air volume, and the operation button 1b is for reducing the set value of the discharge air volume.

When the air purifier having the above configuration is employed, the number of times of operation of each of the pair of operation buttons 1a and 1b is detected by the state detection unit 2 and a detection signal is supplied to the microcomputer 3. 3 can determine which stage has been selected. Then, it reads out the discharge air volume set value from the storage unit 4 corresponding to the selected stage, and outputs a motor control signal based on the read discharge air volume set value. Therefore, the motor 26 is driven by the motor control signal, and can rotate the impeller 27 to discharge the clean air at the selected discharge air volume.

As a result, it is possible to cope with individual differences in sensitivity to noise, discharge wind speed, and the like, and to exert a maximum air cleaning effect on the user within an allowable range. In addition, since it is possible to instruct not only an increase in the discharge air amount but also a decrease in the discharge air amount, the operation for setting a desired discharge air amount can be simplified. FIG. 5 is a front view showing another example of the operation unit 1.

The operation unit 1 includes a pair of operation buttons 1a and 1b for selecting a preset discharge air volume set value.
And a pair of fine-adjustment operation buttons 1c and 1d for fine-adjusting the discharge air volume set value selected using at least one of the pair of operation buttons 1a and 1b. When the operation unit 1 is adopted, a pair of operation buttons 1c and 1d for fine adjustment are directly supplied to the microcomputer 3 so that
The set value of the discharge air volume read from the storage unit 4 corresponding to the stage selected by the number of times of operation of each of the pair of operation buttons 1a and 1b is set to the pair of operation buttons 1c and 1 for fine adjustment.
A configuration is adopted in which fine adjustment is performed according to the number of times of each operation of d.

When the air purifier having this configuration is adopted, the number of set values of the discharge air volume can be reduced, and it is possible to cope with individual differences in sensitivity to noise, discharge wind speed, etc. Thus, the maximum air cleaning effect can be exerted on the user. FIG. 6 shows a case in which a rotary knob is employed as the operation unit 1. A rotary position indicating line is provided at a predetermined position of the knob, and a display indicating the discharge air volume is provided at a predetermined position close to the knob. ing.

When the operation unit 1 is employed,
For example, a unit that detects the rotation angle of the knob is employed as the state detection unit 2. When the air purifier having this configuration is adopted, the configuration of the operation unit 1 can be simplified, and it is possible to cope with individual differences in sensitivity to noise, discharge wind speed, and the like, and to the maximum within an allowable range. Air cleaning effect can be exerted on the user.

FIG. 7 shows a case where a slide-type knob is employed as the operation unit 1. A slide position indicating unit is provided at a predetermined position of the knob, and the discharge air volume is indicated at a predetermined position close to the knob. A linear display is provided.
When this operation unit 1 is employed, the state detection unit 2
For example, one that detects the slide amount of the knob is employed.

When the air purifier having this configuration is employed, the configuration of the operation unit 1 can be simplified, and it is possible to cope with individual differences in sensitivity to noise, discharge wind speed, etc. Thus, the maximum air cleaning effect can be exerted on the user. In each of the above embodiments, it is preferable that the larger the rotation speed of the motor 26 is, the larger the difference between the set discharge air volumes is. In this case, for example, the discharge air volume can be set by paying attention to the change ratio of the discharge air volume, so that the number of discharge air volume setting values to be set according to the interval between individuals can be reduced.

FIG. 8 is an electric circuit diagram showing another embodiment of the air purifier of the present invention. In this air purifier, a fuse 32 and a varistor 33 are connected in series between both terminals of a single-phase commercial AC power supply 31, a capacitor 34 is connected in parallel with the varistor 33, and a first input terminal of the motor 26 is connected to a single-phase commercial AC power supply 31. Connected to one terminal of the AC power supply 31,
Is connected to one terminal of a single-phase commercial AC power supply 31 via a capacitor 35, and the third input terminal of the motor 26 is connected to the other terminal of the single-phase commercial AC power supply 31 via a solid state relay 36. Connected. Then, the primary winding of the transformer 37 is connected in parallel with the capacitor 34,
A rectifier circuit 38 is connected between both terminals of the secondary winding of the transformer 37, and a diode 39 is connected between both output terminals of the rectifier circuit 38.
And a capacitor 40 connected in series, a voltage regulation circuit 41 is connected in parallel with the capacitor 40, and a capacitor 42 is connected between the output terminals of the voltage regulation circuit 41.
To obtain a constant voltage.

A pair of resistors 43 and 44 are connected in series between both output terminals of the rectifier circuit 38, and a connection point between the resistors 43 and 44 is connected to a base terminal of the transistor 45. The constant voltage is applied to the transistor 45 via the resistor 46 connected to the collector terminal, and the collector terminal is connected to the base terminal of the transistor 47. Further, the constant voltage is applied to the series connection circuit of the variable resistor 48 and the capacitor 49, and the connection point between the variable resistor 48 and the
0 is connected to the collector terminal of the transistor 47.

The constant voltage is applied to a series connection circuit of a pair of resistors 51 and 52, and a connection point of the resistors 51 and 52 is connected to a non-inverting input terminal of a comparator 53.
The connection point between the variable resistor 48 and the capacitor 49 is connected to the inverting input terminal of the comparator 53. The constant voltage is applied to the output terminal of the comparator 53 via the resistor 54, and the resistor 55 is connected between the output terminal of the comparator 53 and the non-inverting input terminal. Further, the output terminal of the comparator 53 is connected to the base terminal of the transistor 56 via the resistor 63. In the transistor 56, the constant voltage is applied via a resistor 57 connected to the collector terminal, and the collector terminal is connected to the base terminal of the transistor 58.
The collector terminal of the transistor 58 is connected to the inverting input terminal of the comparator 53 via the resistor 59.

The constant voltage is applied to a series connection circuit of a pair of resistors 60 and 61, a connection point of the resistors 60 and 61 is connected to a non-inverting input terminal of an inverting comparator 62, and an output terminal of the comparator 53 is connected to The inverting input terminal of the inverting comparator 62 is connected, and the output terminal of the inverting comparator 62 is connected to the control terminal of the solid state relay 36.

The variable resistor 48 may be of any configuration such as a rotary type or a sliding type. The variable resistor 48 controls the time td from the zero crossing of the power supply waveform to the output of the pulse output from the inverting comparator 62 by changing the time constant of charging the capacitor 49. The emitter terminal of the transistor 47 and the emitter terminal of the transistor 58 are connected to the ground.

The transistors 45 and 47 achieve a so-called reset function in which the charge of the capacitor 49 is released and cleared each time the power supply waveform crosses zero. The transistors 56 and 58 control the charging and discharging of the capacitor 49 while the transistor 47 is off, so that the comparator 53 and the inverting comparator 6
This is for extracting a pulse-like output from 2.

The operation of the air cleaner having the above configuration will be described with reference to signal waveforms shown in FIG. The rectifier circuit 3
The output voltage Ve 8 is a positive voltage that periodically crosses zero as shown in FIG. This output voltage Ve
Applies a bias voltage to the transistor 45 by being divided by the resistors 43 and 44, so that the output voltage Ve is larger than a predetermined reference voltage {see the broken line in FIG. 9A}. Is turned on, and the transistor 45 is turned off on condition that the output voltage Ve is lower than a predetermined reference voltage {see FIG. 9 (B)}. The transistor 47 is connected to the transistor 45
The on and off states are reversed (see (C) in FIG. 9).

Since the capacitor 49 is charged through the variable resistor 48, as shown in FIG. 9 (F) or FIG. 9 (H), the capacitor 49 has a charging time constant determined by the resistance value of the variable resistor 48. Increases between the terminals Vc1. While the voltage Vc1 between the terminals of the capacitor 49 is smaller than the voltage Vref between the terminals of the resistor 52, the output signal from the comparator 53 is at a high level.
The transistor 56 is turned on {see FIG. 9 (D)},
The transistor 58 is turned off (see FIG. 9E).
If the voltage Vc1 between the terminals of the capacitor 49 becomes larger than the voltage Vref between the terminals of the resistor 52, the output signal from the comparator 53 goes low and the output signal from the inverting comparator 62 goes high. See middle (G) or (I) in FIG. In this case, the transistor 56 is turned off, and the transistor 58 is turned off.
Is turned on, the capacitor 49 is discharged through the resistor 59, and the terminal voltage Vc1 of the capacitor 49 decreases. Then, the above operation is repeated until the output voltage Ve crosses zero again.

When the output signal from the inverting comparator 62 goes high first, the solid state relay 36 is turned on, and the solid state relay 36 is kept on until the output voltage Ve crosses zero again. . As is apparent from the above, by changing the resistance value of the variable resistor 48, the time from the zero crossing of the output voltage Ve to the turning on of the solid state relay 36, and thus the solid state relay 36 during the half cycle of the output voltage Ve, is obtained. Can be controlled. Since the rotation speed of the motor 26 is determined by the ON time of the solid state relay 36, the discharge air volume can be controlled by changing the resistance value of the variable resistor 48. In this embodiment,
Variable resistor 48 capable of changing the resistance value steplessly
, The discharge air volume can be changed steplessly. However, if a configuration in which a plurality of resistors are selected by a switch instead of the variable resistor 48 is adopted, the discharge air volume can be changed stepwise.

FIG. 10 is a front view showing the structure of the operation unit 23. The operation unit 23 includes a rotary knob 23a,
5 air volume display LEDs 23b, air volume indicator 23c,
It has a rotation position display 23d for confirming the operation state of the rotary knob 23a and an air volume display 23e corresponding to the lighting state of the air volume display LED 23b. The air volume indicator 23c is formed of, for example, a liquid crystal display, and displays the number of revolutions of the motor 26 (fan). However, it is also possible to display the discharge wind speed and the like.

FIG. 11 is a diagram showing the relationship between the air volume selected by the rotary knob 23a, the lighting state of the air volume display LED 23b, and the number of rotations of the motor (fan) 26. In FIG. 11, the lighting state of the air volume display LED 23b is indicated by a black circle, and the non-lighting state is indicated by a white circle. As is clear from FIG. 11, when the air volume 1 is selected, only one air volume display LED 23b is turned on, and when the air volume 2 is selected, the two air volume display LEDs 23b are turned on.
Is turned on and 3 and 4
Only one air volume display LED 23b is lit, and the air volume 5,
When 6 and 7 are selected, four air flow display LEDs 2
When only 3b is turned on and the air flow rates 8, 9, and 10 are selected, all the air flow display LEDs 23b are turned on. Of course, the motor (fan) 2 corresponding to the set air volume
The number of rotations 6 is displayed by the air volume display 23c.

Therefore, the selected discharge air volume can be displayed easily and visually. In addition, although the selectable discharge air amount is in ten stages, the air amount display L
The number of the EDs 23b can be set to 5, and the air flow rate display L is smaller than the case where the air flow rate display LEDs 23b are provided for each stage.
The number of EDs 23b can be reduced. further,
When the discharge air volume is small, the number of discharge air volumes at which the number of lighting of the air volume display LED 23b is the same is smaller than when the discharge air volume is large, so that a state in which a change in the discharge air volume can be clearly sensed is displayed in detail. Can be.

In the above embodiment, the operation section, the display section, and the like are provided at predetermined positions of the air purifier main body. However, it goes without saying that these may be provided on the remote controller of the air purifier.

[0050]

According to the first aspect of the present invention, there is provided a unique effect that it is possible to cope with individual differences in sensitivity and to exert a maximum air cleaning effect on the user within an allowable range. The invention of claim 2 has a special effect that it can cope with noise and discharge wind speed which depend on the sensitivity of the individual, in particular, in addition to the effect of claim 1.

The third aspect of the invention has a specific effect that the number of set values of the discharge air volume can be suppressed from increasing in addition to the effects of the first or second aspect. According to the fourth aspect of the invention, it is possible to finely respond to individual differences in sensitivity to noise, discharge wind speed, and the like, and to exert a maximum air cleaning effect on a user, and further increase the number of discharge air volume setting values. This also has a specific effect that the target discharge air volume can be quickly reached.

The invention of claim 5 is the invention of claims 1 to 4.
In addition to the effects of any of the above, the number of selection steps of the clean air discharge air volume can be easily increased without complicating the operation mechanism, and thus the clean air discharge air volume can be easily changed steplessly. It has the unique effect that it can be achieved. According to the invention of claim 6, in addition to the effect of any one of claims 1 to 5, there is a unique effect that an operation for realizing a desired discharge air volume can be simplified.

The invention of claim 7 is the invention of claims 1 to 6
In addition to the effect of any one of the above, there is an effect that the set discharge air volume can be easily confirmed.
The invention of claim 8 has a unique effect that, in addition to the effect of claim 7, the confirmation of the set discharge air volume can be easily achieved based on the number of driven light emitting elements.

According to a ninth aspect of the present invention, in addition to the effect of the seventh aspect, the number of driven light emitting elements is prevented from changing even when the change in the amount of discharge air is small, and the amount of discharge air based on the number of light emitting elements is reduced. Has a unique effect that confirmation of the information can be simplified. According to a tenth aspect of the present invention, in addition to the effect of the ninth aspect, the number of discharge air volumes for driving the same number of light emitting elements can be set according to the change rate of the discharge air volume,
As a result, it is possible to achieve a unique effect that the display of the discharge air volume can be achieved in accordance with the feeling received by the user using a small number of light emitting elements.

According to the eleventh aspect of the present invention, in addition to the effects of any one of the first to tenth aspects, a front-blown type in which there is a high possibility that individual differences in sensitivity to noise, discharge air volume and the like occur due to the purpose of use. The air purifier described above has a unique effect that it can be used comfortably.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the air purifier of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a block diagram showing an electrical configuration of the air purifier shown in FIGS. 1 and 2.

FIG. 4 is a front view showing an example of the operation unit 1.

FIG. 5 is a front view showing another example of the operation unit 1.

FIG. 6 is a front view showing still another example of the operation unit 1.

FIG. 7 is a front view showing still another example of the operation unit 1.

FIG. 8 is an electric circuit diagram showing another embodiment of the air purifier of the present invention.

FIG. 9 is a diagram showing signal waveforms at various parts of the air purifier of FIG.

FIG. 10 is a front view showing an example of the operation unit 23.

FIG. 11 is a diagram showing a relationship between an air volume selected by a rotary knob, a lighting state of an air volume indicator LED, and a rotation speed of a motor (fan).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation part 1a, 1b, 1c, 1d Operation button 2 State detection part 3 Microcomputer 4 Storage part 20 Clean air outlet 21 Casing 23b Air volume display LED 23c Air volume indicator 26 Motor 27 Impeller

Claims (11)

[Claims] 1. An air purifier having air blowing means (26), (27) for inhaling air from a room, purifying the intake air, and discharging the air into the room again, wherein the air is cleaned by the air blowing means (26), (27). Air volume setting means (1) for setting air discharge air volume
(2) Including (3) and (4), air volume setting means (1) (2)
In (3) and (4), the set values of the number of discharge air volumes are set in advance so as to be able to cope with individual differences in sensitivity and to set the maximum clean air discharge air volume within the range of individual sensitivity. An air purifier characterized in that: 2. The air purifier according to claim 1, wherein the individual difference in sensitivity is at least one of noise and discharge wind speed. 3. The air volume setting means (1) (2) (3)
(4) The difference between the set values of the discharge air amount in the adjacent stages is set to be larger as the amount of the clean air discharge air by the blowing means (26) (27) is larger.
Or the air purifier according to claim 2. 4. The air volume setting means (1) (2) (3)
(4) The air purifier according to any one of claims 1 to 3, which can indicate that the current clean air discharge air volume should be reduced. 5. The air volume setting means (1) (2) (3)
(4) The air purifier according to any one of claims 1 to 4, wherein the air purifier has a knob for operation, and by operating the knob, a desired amount of clean air discharge air volume can be set. . 6. The air volume setting means (1) (2) (3)
(4) operating means (1a) and (1b) for selecting a preset discharge air volume set value at any stage, and auxiliary operating means (1) for finely adjusting the selected discharge air volume set value.
c) (1d).
The air purifier according to any one of the above. 7. The air purifier according to claim 1, further comprising display means (23b) (23c) for displaying the set discharge air volume. 8. The display means (23b) includes a plurality of light emitting elements (23b) and drives a number of light emitting elements (23b) corresponding to a set discharge air volume. Air purifier. 9. The display means (23b) includes a number of light emitting elements (23b) smaller than the number of discharge air volume setting values,
The air purifier according to claim 7, wherein the same number of light emitting elements (23b) are driven corresponding to the plurality of discharge air volumes. 10. The display means (23b) reduces the number of discharge air volumes for driving the same number of light emitting elements (23b) when the discharge air volume is small than when the discharge air volume is large. 10 is set as follows.
An air purifier according to item 1. 11. The air purifier according to claim 1, further comprising a clean air discharge port (20) for discharging clean air on a front surface of the air purifier body (21).