JP2003056878A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate checking the quantity of produced minus ions by a user and enable the control of the quantity of produced minus ions by estimating the quantity of minus ions generated by a minus ion generating means attached to an air cleaner. SOLUTION: The cleaner comprises a means for generating and discharging minus ions into purified air to be fed into room; and a means for acquiring environment information including information about the current operating condition and the condition of introduced air, and also for estimating the quantity of minus ions contained in the purified air, based on the environment information.

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 that removes foreign substances contained in introduced air and supplies purified air to a room.

[0002]

2. Description of the Related Art An air purifier includes a blower fan that introduces air into a casing to generate an airflow for supplying purified air into a room, and a fan motor and a fan motor that rotationally drive the blower fan. It is provided with a fan motor driving means for controlling rotation.

In the casing, filters are arranged in an air flow generated by a blower fan, and are configured to adsorb smoke, dust, pollen, and other foreign matter contained in the air. Examples of filters include a prefilter for adsorbing large dust and dirt, a deodorizing filter for adsorbing malodorous components such as zeolite, an electrostatic precipitating element for adsorbing and adsorbing fine particles such as cigarette smoke, and titanium oxide. It is possible to use a photocatalytic filter that decomposes malodorous components and harmful substances into carbon dioxide and water by using the reaction with ultraviolet rays to inactivate viruses, and one or more filters can be combined depending on the application. Used.

The air purifier may be provided with negative ion generating means for releasing negative ions into the purified air supplied to the room. This negative ion generating means can be configured, for example, by disposing a negatively charged needle in the passing air and discharging the needle between the negative electrode and a grounded electrode.

[0005]

In the air cleaner as described above, there is usually no means for measuring the amount of negative ions generated by the negative ion generating means, and the amount of negative ion generated. Has been left unchecked. Moreover, since the amount of negative ions generated by the negative ion generating means is not displayed, it is difficult for the user to confirm the effect of the negative ion generating means.

[0006] In order to measure and display the amount of negative ions generated by such negative ion generating means, an expensive sensor is required, resulting in an increase in cost.

According to the present invention, in the air purifier provided with the negative ion generating means, the amount of generated negative ions can be obtained by estimation, thereby facilitating the confirmation by the user and controlling the amount of generated negative ions. The purpose is to

[0008]

An air purifier according to claim 1 of the present invention is an air purifier that removes foreign substances contained in introduced air and supplies purified air to a room.
Negative ion generation means that generates negative ions and discharges them to the purified air supplied to the room, and environmental information including information on the current operating state and the state of the introduced air is acquired, and the amount of negative ions contained in the purified air is set to the environment. And a negative ion amount estimating means for estimating based on the information.

In this case, the amount of negative ions released into the purified air by the negative ion generating means is estimated by using the environmental information including the information on the current operating state and the state of air, and this negative ion amount is calculated. It can be displayed and used as a parameter during control.

An air purifier according to a second aspect of the present invention is the air purifier according to the first aspect, which is a blower fan for introducing air to generate an air flow for supplying purified air into a room. The negative ion amount estimating means is configured to acquire the air amount of the blower fan as environmental information and estimate the negative ion amount based on this.

In this case, the correlation between the air volume of the blower fan and the amount of negative ions is made into a table so that
By detecting the current air volume, it becomes possible to estimate the amount of negative ions released into the purified air.

An air purifier according to a third aspect of the present invention is the air purifier according to the second aspect, wherein a fan motor that rotationally drives a blower fan and a fan motor drive that controls the rotation speed of the fan motor. The negative ion amount estimating unit is configured to obtain the air amount of the blower fan based on the rotation speed of the fan motor controlled by the fan motor driving unit.

When the control amount relating to the rotation speed of the fan motor by the fan motor driving means is variable,
The negative ion amount can be estimated by correlating the rotation speed of the fan motor with the air amount of the blower fan.

An air purifier according to claim 4 of the present invention is the air purifier according to any one of claims 1 to 3, wherein the negative ion amount estimating means is smoke contained in the introduced air. Estimate the amount of negative ions based on the particle concentration of dust, pollen, etc.

In this case, the particle concentration contained in the introduced air can be detected by making a table of the correlation between the particle concentration of smoke, dust, pollen and the like contained in the air and the amount of negative ions. The amount of negative ions released into the purified air can be estimated. Of course, it is possible to obtain both the air volume of the blower fan and the particle concentration as environmental information, and to estimate the amount of negative ions released into the purified air.

An air purifier according to claim 5 of the present invention is the air purifier according to claim 4, wherein the particle concentration of smoke, dust, pollen, etc. contained in the introduced air is optically determined. A dust sensor for detection is further provided.

In this case, the dust sensor causes smoke, dust,
It is possible to detect the concentration of particles such as pollen and estimate the amount of negative ions based on the detected value. An air purifier according to claim 6 of the present invention is the air purifier according to any one of claims 1 to 5, wherein the negative ion amount estimation means is based on the humidity of the introduced air. To estimate.

In this case, the correlation between the humidity of the introduced air and the amount of negative ions released is made into a table, the humidity of the introduced air is detected, and the amount of negative ions released into the purified air is calculated. Can be estimated. It can be configured to acquire both the air volume of the blower fan and the humidity of the introduced air as environmental information, and to estimate the amount of negative ions released into the purified air from this, as well as the air volume of the blower fan, smoke, dust, It is also possible to estimate the amount of negative ions by using the particle concentration of pollen and the humidity of the introduced air as environmental information.

An air purifier according to claim 7 of the present invention is the air purifier according to claim 6, wherein the humidity of the introduced air is detected, and the detected humidity information is used as a negative ion amount estimating means. It further comprises a humidity sensor for transmitting to.

In this case, the humidity of the introduced air can be detected by the humidity sensor, and the negative ion amount can be estimated based on the detected value. An air purifier according to claim 8 of the present invention is the air purifier according to any one of claims 1 to 7, wherein the negative ion amount estimation means is based on the temperature of the introduced air. Estimate the quantity.

In this case, the correlation between the temperature of the introduced air and the amount of negative ions released is made into a table, the temperature of the introduced air is detected, and the amount of negative ions released into the purified air is calculated. Can be estimated. It can be configured to acquire both the air flow rate of the blower fan and the temperature of the introduced air as environmental information, and to estimate the amount of negative ions released into the purified air from this, and also the air flow rate of the blower fan, smoke, dust, It is also possible to estimate the amount of negative ions by using the concentration of particles such as pollen and the temperature of the introduced air as environmental information.
It is also possible to estimate the amount of negative ions by using the particle concentration of smoke, dust, pollen, etc., the humidity of the introduced air and its temperature as environmental information.

An air purifier according to claim 9 of the present invention is the air purifier according to claim 8, wherein the temperature of the introduced air is detected, and the detected temperature information is used as a negative ion amount estimating means. It further comprises a temperature sensor for transmitting to.

In this case, the temperature of the introduced air can be detected by a temperature sensor, and the amount of negative ions can be estimated based on the detected value. Claim 10 of the present invention
The air purifier according to claim 1 is the air purifier according to any one of claims 1 to 9, further comprising display means for displaying the negative ion amount in the purified air estimated by the negative ion amount estimating means. There is.

In this case, the user can confirm the amount of negative ions released into the purified air by the negative ion generating means and display the estimated value on the display means.

An air purifier according to claim 11 of the present invention comprises:
The air purifier according to any one of claims 1 to 10, wherein set value receiving means for receiving a set value of the amount of negative ions in the purified air, and negative ions released into the purified air by the negative ion generating means. And negative ion control means for controlling the negative ion generation means so that the amount approaches the set value.

In this case, the amount of negative ions released into the purified air by the negative ion generating means is estimated, and the negative ion amount in the purified air supplied to the room is controlled by controlling the amount to be close to the set value. The amount can be controlled to the desired amount.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION [Schematic Configuration of Air Purifier] FIG. 1 shows an external configuration of an air purifier to which an embodiment of the present invention is applied.
Shown in.

The air purifier 1 includes a main body casing 11 and
Front panel portion 1 provided on the front surface of the main body casing 11
2 and. The front panel section 12 is provided in front of the main body casing 11 with a space between the front panel section 1 and the front panel 1.
Side suction ports 13 are formed on the left and right sides of the upper part 2, and an upper suction port 14 is formed on the upper side. Below the front panel 12, a display panel 15 is provided for displaying an operation mode, monitor information from various sensors, timer information, maintenance information, and the like. The display panel 15 includes a liquid crystal display panel, LEDs, electroluminescence (E
L), other display elements, or a combination thereof.

Inside the main body casing 11, as shown in FIGS. 2 and 3, a fan motor 21 and a fan motor 2 are provided.
And a blower fan 22 that is driven to rotate by 1. As the blower fan 22, a centrifugal fan that generates an airflow in a direction away from the rotation axis can be adopted,
As the fan motor 21, an inverter motor whose frequency is controlled by an inverter circuit can be adopted.

On the inner side of the front panel 12, the side suction port 1
3 and various filters for removing foreign matters contained in the air sucked from the upper suction port 14 are provided.
FIG. 2 shows an example of filters provided in the air purifier 1.

First, a pre-filter 31 for removing relatively large dust and dust is arranged. The prefilter 31 can employ a dustproof net made of synthetic resin fiber or the like.

A plasma ionization section 32 is arranged inside the pre-filter 31. The plasma ionization unit 32 includes smoke, dust, and the like that have passed through the pre-filter 31.
Pollen and other dirt particles are charged by applying a strong electric charge to improve the efficiency of collecting particles by the filter in the subsequent stage.

Inside the plasma ionization section 32, the first
A photocatalytic filter 38 is arranged. The first photocatalytic filter 38 is a stack of an electrostatic filter 33 for adsorbing particles charged in the plasma ionization unit 32 and a titanium oxide filter 34 containing titanium oxide having a photocatalytic action. This first photocatalytic filter 38
Is in the form of a roll that is wrapped in multiple lengths,
When the surface in use is dirty, it can be pulled out to cut the dirty part.

Inside the first photocatalytic filter 38, a second photocatalytic filter 35 and a third photocatalytic filter 36 made of a material containing titanium oxide are arranged.
Second photocatalytic filter 35 and third photocatalytic filter 36
An inverter lamp 37 is arranged in the middle of the line.
The inverter lamp 37 includes the first photocatalytic filter 3
8, the second photocatalyst filter 35 and the third photocatalyst filter 36 are irradiated with ultraviolet rays, and the photocatalytic action of each photocatalyst filter is activated.

As shown in FIG. 3, the airflow generated by the blower fan 22 passes through various filters, becomes purified air, and is discharged from the central portion of the blower fan 22 in the circumferential direction. It passes through the air passage 17 formed inside 11. The purified air that has passed through the air passage 17 is discharged indoors from the air outlet 16 provided in the upper portion of the casing body 11.

A negative ion generator 41 for adding negative ions to the purified air passing therethrough is arranged in the air passage 17. Negative ion generator 41
Is a structure in which a needle-shaped negative electrode that is negatively charged and a discharge plate that is grounded are arranged so as to face each other in the air flow passing therethrough. By applying a negative electric charge to the negative electrode to cause discharge between the negative electrode and the discharge plate, negative ions can be added to the passing purified air.

A control block diagram of the air purifier 1 is shown in FIG. The air purifier 1 includes a control unit 51 including a microprocessor. The control unit 51 is connected to a ROM 52 that stores control programs and various parameters, a RAM 53 that temporarily stores variables that are being processed, and the like.

The control unit 51 also includes a humidity sensor 54,
Various sensors such as a temperature sensor 55, a dust sensor 56, a gas sensor 57, etc. are connected, and the detection signal of each sensor is input.

As the dust sensor 56, for example, an optical type in which a light emitting element composed of an LED or the like and a light receiving element composed of a photodiode or the like are arranged so that their optical axes are inclined at a predetermined angle is used. You can Such a dust sensor 56 irradiates the introduced air with light from the light emitting element, and detects the amount of light reaching the light receiving element by being scattered by smoke, dust, pollen, and other particles contained in the air. Thus, the concentration of particles such as dust can be measured.

The gas sensor 57 is for detecting particles contained in cigarette smoke, chemical vapor, and the like, and utilizes, for example, that the electric resistance of tin oxide decreases in the reducing gas. A tin oxide plate is arranged in the air introduced by the blower fan 22, a voltage is applied, and the gas concentration is detected from the flowing current value.

The control unit 51 has a fan motor driving unit 58 for controlling the rotation of the fan motor 21, a negative ion driving unit 59 for driving the negative ion generator 41, and a display panel for displaying various operating modes. 1
5. An infrared transmitting / receiving unit 60 for receiving instruction data from the remote controller and transmitting operating conditions, temperature / humidity, and other environmental data to the remote controller is connected.

When the instruction signal transmitted from the remote controller is received via the infrared transmission / reception unit 60, the rotation number of the fan motor 21 is determined based on the instruction of the operation mode included in the instruction signal, and the control by the fan motor drive unit 58 is performed. I do.
At the same time, the negative ion drive unit 59 controls the negative ion generator 41 to add negative ions to the purified air.

[Estimation of Amount of Negative Ions] It is considered that the amount of negative ions released into the purified air by the negative ion generator 41 depends on the humidity of the air, the temperature, the amount of air, the concentration of dust particles contained therein, and the like.

FIG. 5 shows a plot of the correlation between the humidity in the air and the amount of negative ions generated from the measurement results. The measurement result shows that the amount of negative ions generated is about 200,000 (pieces / cc) at a relative humidity of 35%, the amount of negative ions generated is about 220,000 (pieces / cc) at a relative humidity of 45%, and the amount of negative ions generated at a relative humidity of 55%. Is about 240000 (pieces / cc), and it can be seen that the amount of negative ions generated increases as the humidity increases.

FIG. 6 shows a plot of the correlation between the amount of air blown by the blower fan 22 and the amount of negative ions generated from the measurement results. In this measurement result, the air volume is 2 (m ³ / min)
The negative ion generation rate is about 80,000 (pieces / cc), the negative ion generation quantity is about 140,000 (pieces / cc) when the air volume is 3 (m ³ / min), and the negative ion generation quantity is about 5 (m ³ / min). It is about 190000 (pieces / cc), and it can be seen that the amount of negative ions generated increases as the air volume increases.

Similarly, FIG. 7 shows the correlation between the temperature in the air and the amount of generated negative ions. Here, the amount of negative ions generated increases as the temperature of the introduced air increases.

FIG. 8 shows the correlation between the dust concentration (dust particle concentration) in the air and the amount of negative ions generated. Here, smoke, dust,
The higher the concentration of particles such as pollen, the smaller the amount of negative ions generated.

Therefore, the humidity information of the introduced air,
The negative ion generation amount can be estimated from the temperature information, the dust concentration, and the data on the air volume, and can be used for controlling the negative ion generation device 41 or displaying the negative ion generation amount. This control system diagram is shown in FIG.

By loading the negative ion amount estimation program into the control unit 51, the water amount calculation unit 7
1, a generated negative ion amount calculation unit 72, a lost negative ion amount calculation unit 73, and an effective negative ion amount calculation unit 74 are configured. The output of the effective negative ion amount calculation unit 74 is input to the negative ion generation applied voltage control unit 75.

Humidity information based on the detection value of the humidity sensor 54 and room temperature information based on the detection value of the temperature sensor 55 are input to the water content calculation unit 71. The moisture amount calculation unit 71 calculates the amount of moisture in the introduced air based on the input humidity information and room temperature information.

The generated negative ion amount calculation unit 72 has an output signal from the negative ion generation applied voltage control unit 75, an output signal from the moisture amount calculation unit 71, and a fan motor drive unit 58.
The air volume information based on the control amount of is input. The negative ion generation applied voltage control unit 75 determines the control amount of the applied voltage for controlling the negative ion generation amount in the negative ion generation device 41, and passes the control amount to the negative ion drive unit 59. From the output signal of the negative ion generation applied voltage control unit 75, the generated negative ion amount calculation unit 72 determines the negative ion generation device 4
The amount of negative ions generated by 1 is calculated, and the amount of negative ions generated is corrected based on the amount of water in the introduced air input from the water amount calculation unit 71. In this case, based on the correlation between the humidity and temperature in the air and the negative ion generation amount as shown in FIGS. 5 and 7,
The correlation between the amount of water in the air and the amount of generated negative ions can be made into a table, and the amount of generated negative ions can be corrected based on the data of the amount of water input from the water amount calculation unit 71. is there.

The fan motor drive unit 58 controls the rotation of the fan motor 21 based on the instruction information from the remote controller, and inputs this control amount to the generated negative ion amount calculation unit 72 as air amount information. The generated negative ion amount calculation unit 72 calculates the air amount by the blower fan 22 based on the data input from the fan motor drive unit 58, and corrects the negative ion generation amount. Also in this case,
From the measurement result as shown in FIG. 6, the correlation between the air volume by the blower fan 22 and the negative ion generation amount is made into a table, and the negative ion generation amount is corrected based on the air volume information input from the fan motor drive unit 58. Can be configured to do.

Air cleanliness information from the dust sensor 56 is input to the lost negative ion amount calculation unit 73. The dust sensor 56 detects smoke, dust,
The concentrations of pollen and other particles are detected, and the detected values are input to the disappearance negative ion amount calculation unit 73 as air cleanliness information. The lost negative ion amount calculation unit 73 calculates the amount of negative ions that will be lost by reacting with the particles contained in the air based on the input air cleanliness information. Also in this case, the correlation between the air cleanliness information and the amount of lost negative ions is tabulated based on the correlation between the dust concentration and the amount of generated negative ions as shown in FIG. It can be configured to calculate the amount of negative ions lost based on the cleanliness information.

The output value of the generated negative ion amount calculation unit 72 and the output value of the lost negative ion amount calculation unit are input to the effective negative ion amount calculation unit 74. The effective negative ion amount calculation unit 74 subtracts the lost negative ion amount calculated by the lost negative ion amount calculation unit 73 from the generated negative ion amount calculated by the generated negative ion amount calculation unit 72 to obtain purified air. Calculate the amount of effective negative ions included.

The calculation result of the effective negative ion amount calculation unit 74 is output to the display unit 15 and displayed visually. At the same time, the calculation result of the effective negative ion amount calculation unit 74 is input to the negative ion generation applied voltage control unit 75. The negative ion generation applied voltage control unit 75 compares the input effective negative ion amount with a control target value to determine the applied voltage, passes the control amount to the negative ion drive unit 59, and calculates the generated negative ion amount. Part 72
Give feedback to.

[Display Panel] The display panel 15 is shown in FIG.
As shown in FIG. 7, a driving display section for displaying whether or not the vehicle is driving, and a mode display section 8 for displaying the current driving mode.
2. An air flow rate display unit 83 that displays the current air flow rate, an automatic air flow rate display unit 84 that displays that the air flow rate is being automatically controlled, a maintenance time display unit 85 that displays the cleaning time and the filter replacement time, and a cut-off timer. A timer display unit 86 that displays the setting, a cleanliness display unit 87 that displays the degree of dust and odor in the air based on the dust concentration detected by the dust sensor 56 and the particle concentration of the malodorous component detected by the gas sensor 57. A negative ion operation display unit 88 for displaying that negative ions are being generated by the negative ion generator 41, a negative ion amount display unit 89 for displaying the effective negative ion amount in the air supplied to the room, and the like. There is.

The display panel 15 can be constituted by a liquid crystal display panel, and a plurality of LEDs can be arranged on the inner surface of the panel which can transmit light. When the negative ion generator 41 is in operation, the negative ion operation display portion 88 is turned on and a message to that effect is displayed. At the same time, based on the effective negative ion amount calculated by the effective negative ion amount calculation unit 74, the negative ion amount display unit 89 displays. For example, when a plurality of LEDs are arranged as the negative ion amount display unit 89, the number of LEDs that are sequentially turned on from the left is increased according to the effective negative ion amount, and the effective negative ion amount is a certain amount or more. Can be configured to turn on all LEDs. In addition, when the negative ion amount display unit 89 is composed of a display element capable of displaying numerical values, it is possible to display the effective negative ion amount numerically.

In this way, the negative ion generator 41
By estimating the amount of negative ions released into the purified air from humidity information, room temperature information, air volume information, air cleanliness information, etc., it is possible to obtain an accurate negative ion amount. The applied voltage control can be executed to obtain a desired negative ion amount. Further, by displaying on the display panel 15 based on the effective amount of negative ions, the user can visually check the current amount of generated negative ions, and feel the effect of the negative ions released into the indoor air. You can

Further, since the detected values of the humidity sensor 54, the temperature sensor 55, the dust sensor 56 and the like are used as the parameters used for estimating the amount of negative ions, a special expensive sensor for detecting negative ions is required. Therefore, the cost can be kept low.

Other Embodiments (a) The generated negative ion amount calculation unit 72 calculates the generated negative ion amount based on the output value of the negative ion generation applied voltage control unit 75 and the air amount information from the fan motor drive unit 58. Can be configured to calculate

In this case, since the amount of generated negative ions is not corrected by the humidity information and the temperature information, an error occurs due to the amount of water in the air, but the humidity sensor 54 and the temperature sensor 55 can be omitted. It is possible to reduce costs.

Similarly, the lost negative ion amount calculation unit 73
Can be omitted, and the correction based on the amount of lost negative ions based on the air cleanliness information can be omitted. In this case as well, although an error based on the air cleanliness information will occur, the dust sensor 56 can be omitted and the cost can be reduced.

As parameters for estimating the effective negative ion amount, only air volume information, air volume information and air cleanliness information, air volume information and humidity information, air volume information, humidity information and air cleanliness information, air volume information, humidity information, A combination of temperature information and air cleanliness information is possible.
As described above, since the sensors can be omitted as the number of parameters is smaller, the cost can be reduced, and the cost can be reduced in the order of →→→→. Also, in order to obtain an accurate effective negative ion amount, it is necessary to consider various parameters, →→
Good accuracy can be obtained in the order of → →.

The combination of each parameter is
However, the present invention is not limited to this, and other combinations are possible. (B) In the air conditioner configured to perform heat exchange between the refrigerant circulating in the refrigerant circuit and the introduced indoor air, and to supply the adjusted air after the heat exchange into the room, generate negative ions. When the device is provided and configured to emit negative ions into the air supplied to the room, the configuration of the present invention is applied to estimate the amount of generated negative ions and use them for control, and to the display panel. Can be configured to display.

[0065]

The air purifier according to claim 1 of the present invention uses the environmental information including the information on the current operating state and the state of the air to discharge the negative ions into the purified air by the negative ion generating means. The amount is estimated, and this negative ion amount can be displayed or used as a parameter during control.

In the air purifier according to claim 2 of the present invention,
By presenting a table of the correlation between the air volume of the blower fan and the amount of negative ions, the current air volume is detected,
It is possible to estimate the amount of negative ions released into the purified air.

In the air purifier according to claim 3 of the present invention,
The negative ion amount can be estimated by correlating the rotation speed of the fan motor with the air amount of the blower fan. In the air purifier according to claim 4 of the present invention, the correlation between the particle concentration of smoke, dust, pollen and the like contained in the air and the amount of negative ions is tabulated so that the air can be contained in the introduced air. It is possible to estimate the amount of negative ions released into the purified air by detecting the concentration of particles that are generated. Of course, it is possible to obtain both the air volume of the blower fan and the particle concentration as environmental information, and to estimate the amount of negative ions released into the purified air.

In the air purifier according to claim 5 of the present invention,
It is possible to detect the particle concentration of smoke, dust, pollen, etc. by the dust sensor and estimate the amount of negative ions based on the detected value.

In the air purifier according to claim 6 of the present invention,
It is possible to make a table of the correlation between the humidity of the introduced air and the amount of released negative ions, detect the humidity of the introduced air, and estimate the amount of negative ions released into the purified air. It can be configured to acquire both the air volume of the blower fan and the humidity of the introduced air as environmental information, and to estimate the amount of negative ions released into the purified air from this, as well as the air volume of the blower fan, smoke, dust, It is also possible to estimate the amount of negative ions by using the particle concentration of pollen and the humidity of the introduced air as environmental information.

In the air purifier according to claim 7 of the present invention,
The humidity of the introduced air can be detected by a humidity sensor, and the negative ion amount can be estimated based on the detected value.

In the air purifier according to claim 8 of the present invention,
The correlation between the temperature of the introduced air and the amount of negative ions released can be made into a table, the temperature of the introduced air can be detected, and the amount of negative ions released into the purified air can be estimated. It can be configured to acquire both the air flow rate of the blower fan and the temperature of the introduced air as environmental information, and to estimate the amount of negative ions released into the purified air from this, and also the air flow rate of the blower fan, smoke, dust, It is also possible to estimate the amount of negative ions by using the particle concentration of pollen and the temperature of the introduced air as environmental information, and further, the air volume of the blower fan, the particle concentration of smoke, dust, pollen, etc. It is also possible to estimate the amount of negative ions by using humidity and its temperature as environmental information.

In the air purifier according to claim 9 of the present invention,
The temperature of the introduced air can be detected by a temperature sensor, and the amount of negative ions can be estimated based on the detected value.

In the air purifier according to the tenth aspect of the present invention, the amount of negative ions released into the purified air is estimated by the negative ion generating means, and the estimated value is displayed on the display means to be confirmed by the user. It becomes possible to do.

In the air purifier according to the eleventh aspect of the present invention, the amount of negative ions released into the purified air by the negative ion generating means is estimated, and the negative ion amount is controlled so as to approach the set value. It is possible to control the amount of negative ions in the purified air supplied to the device to a desired amount.

[Brief description of drawings]

FIG. 1 is a perspective view showing an external configuration of an air purifier.

FIG. 2 is an exploded perspective view of filters.

FIG. 3 is an explanatory diagram showing an internal structure.

FIG. 4 is a control block diagram.

FIG. 5 is a graph showing the correlation between humidity and the amount of negative ion generation.

FIG. 6 is a graph showing the correlation between the air volume and the negative ion generation amount.

FIG. 7 is a graph showing the correlation between temperature and the amount of negative ion generation.

FIG. 8 is a graph showing the correlation between dust concentration and the amount of negative ion generation.

FIG. 9 is a control system diagram of a negative ion generation amount estimation program.

FIG. 10 is an explanatory diagram of a display panel.

[Explanation of symbols] 15 Display panel 54 Humidity sensor 55 Temperature sensor 56 dust sensor 58 Fan motor drive 59 Negative ion drive unit 71 Water content calculator 72 Generated negative ion amount calculator 73 Loss negative ion amount calculator 74 Effective negative ion amount calculator 75 Negative ion generation Applied voltage control unit

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B03C 3/68 B03C 3/68 Z F24F 7/00 F24F 7/00 B H01T 23/00 H01T 23/00 F Term (reference) 3L056 BD01 BD02 BD03 BD07 BE02 BF06 4C080 AA09 BB01 CC01 QQ17 QQ20 4D054 AA13 BB04 BB12 CA10 CA11 CA12 CA13 CA14 CA15 CA20 EA01 EA11 EA14 EA22

Claims (11)

[Claims] 1. An air purifier which removes foreign substances contained in the introduced air and supplies purified air to the room, wherein negative ions are generated and released to the purified air supplied to the room. Means, and means for estimating the amount of negative ions contained in the purified air based on the environmental information while obtaining environmental information including information on the current operating state and the state of the introduced air, and means for estimating the amount of negative ions. Air cleaner. 2. A blower fan for introducing air to generate an air flow for supplying purified air into the room, wherein the negative ion amount estimating means acquires the air amount of the blower fan as environmental information. The air purifier according to claim 1, wherein the negative ion amount is estimated based on the negative ion amount. 3. A fan motor for rotatably driving the blower fan, and a fan motor drive means for controlling the rotation speed of the fan motor, wherein the negative ion amount estimating means is controlled by the fan motor drive means. The air purifier according to claim 2, wherein the air volume of the blower fan is obtained based on the rotation speed of the fan motor. 4. The negative ion amount estimating means estimates the negative ion amount based on the particle concentration of smoke, dust, pollen, etc. contained in the introduced air. Air purifier. 5. The air purifier according to claim 4, further comprising a dust sensor that optically detects a particle concentration of smoke, dust, pollen, etc. contained in the introduced air. 6. The air purifier according to claim 1, wherein the negative ion amount estimating means estimates the negative ion amount based on the humidity of the introduced air. 7. The air purifier according to claim 6, further comprising a humidity sensor for detecting the humidity of the introduced air and transmitting the detected humidity information to the negative ion amount estimating means. 8. The air purifier according to claim 1, wherein the negative ion amount estimating means estimates the negative ion amount based on the temperature of the introduced air. 9. The air purifier according to claim 8, further comprising a temperature sensor for detecting the temperature of the introduced air and transmitting the detected temperature information to the negative ion amount estimating means. 10. The air purifier according to claim 1, further comprising display means for displaying the amount of negative ions in the purified air estimated by the negative ion amount estimation means. 11. Set value receiving means for receiving a set value of the amount of negative ions in the purified air, and the negative ion so that the amount of negative ions released into the purified air by the negative ion generating means approaches the set value. The air cleaner according to any one of claims 1 to 10, further comprising negative ion control means for controlling the generation means.