JP7634220B2 - Air conditioner and air cleaning method - Google Patents

Description

This disclosure relates to an air conditioning device that performs an air purification function, and an air purification method.

Patent Document 1 discloses an air conditioner that realizes an air purification function. This air conditioner is equipped with an air quality sensor, and an air purification filter is positioned at the air intake based on the detection results of the air quality sensor.

JP 2018-151081 A

The present disclosure aims to provide an air conditioner and air purification method that increases the amount of air pollutants removed from indoor air while minimizing the reduction in user comfort.

The air conditioning apparatus of the present disclosure comprises a predetermined number of three or more air purification functions, and a control unit that controls the predetermined number of air purification functions, wherein the control unit acquires detection results from an air quality sensor that detects fine particulate matter as an air pollutant, and determines whether or not to execute each of the predetermined number of air purification functions based on the detection results from the air quality sensor, and executes the air purification functions that have been decided to be executed, wherein the predetermined number of air purification functions include an ion sending function that sends at least one of ions and ozone into a room, a filter function that closes a filter configured to be able to open and close an intake port, a dehumidification function that dehumidifies the air in the room, and a blower function that circulates the air in the room, and the control unit acquires detection results from a human presence sensor that detects the presence or absence of a human body, and controls the predetermined number of air purification functions based on the detection results from the air quality sensor and the detection results from the human presence sensor. The control unit determines whether to execute each of the air purification functions, and when the detection result of the air quality sensor indicates a lack of air purification capacity and the human presence sensor does not detect a human body, the control unit sequentially executes the air purification functions that are not being executed among the specified number of air purification functions based on a preset first priority order, and when the detection result of the air quality sensor indicates a lack of air purification capacity and the human presence sensor detects a human body, the control unit sequentially executes the air purification functions that are not being executed among the specified number of air purification functions based on a preset second priority order, the first priority order being set to descend in the order of the dehumidification function, the air blowing function, the filter function, and the ion sending function, and the second priority order being set to descend in the order of the ion sending function, the filter function, the air blowing function, and the dehumidification function.

Further, an air purification method in the present disclosure is an air purification method for an air conditioner equipped with a predetermined number of air purification functions, which includes obtaining a detection result of an air quality sensor that detects fine particulate matter as an air pollutant, determining whether or not to execute each of the predetermined number of air purification functions based on the detection result of the air quality sensor, and executing the air purification functions that have been decided to be executed, the predetermined number of air purification functions including an ion sending function that sends at least one of ions and ozone into a room, a filter function that closes a filter configured to be able to open and close an intake port, a dehumidification function that dehumidifies the air in the room, and a blowing function that circulates the air in the room, obtaining a detection result of a human presence sensor that detects the presence or absence of a human body, and controlling the predetermined number of air purification functions based on the detection result of the air quality sensor and the detection result of the human presence sensor. a determination is made as to whether or not to execute each of the above functions; when the detection result of the air quality sensor indicates a lack of air cleaning capacity and the human presence sensor does not detect a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset first priority order; when the detection result of the air quality sensor indicates a lack of air cleaning capacity and the human presence sensor detects a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset second priority order, the first priority order being set to descend in the order of the dehumidification function, the air blowing function, the filter function, and the ion sending function, and the second priority order being set to descend in the order of the ion sending function, the filter function, the air blowing function, and the dehumidification function.

The air conditioning device and air purification method disclosed herein determine whether or not to execute each of a predetermined number of three or more air purification functions based on the detection results of an air quality sensor, and executes the air purification function that has been determined to be executed, thereby achieving the following effects. That is, by appropriately determining whether or not to execute each of a predetermined number of three or more air purification functions, it is possible to increase the amount of air pollutants removed from the air in the room and prevent a decrease in user comfort.

FIG. 1 is a vertical cross-sectional view showing an example of an indoor unit of an air conditioner according to an embodiment of the present invention. FIG. 1 is a vertical cross-sectional view showing an example of an indoor unit of an air conditioner according to an embodiment of the present invention. FIG. 1 is a diagram showing an example of the configuration of an ion generating device; FIG. 2 is a diagram showing an example of the configuration of a control unit and an air control function. A flowchart showing an example of a process of the control unit. A flowchart showing an example of a process of the control unit. A flowchart showing an example of a process of the control unit. 11 is a flowchart showing an example of a first plurality of operation processes of a control unit. 11 is a flowchart showing an example of a second multiple operation process of the control unit.

(The knowledge and other information that formed the basis of this disclosure)
When a single air cleaning function is performed as an air cleaning operation in an air conditioner, there is a limit to the amount of air pollutants that can be removed per unit time, so there is a possibility that the air pollutants in the indoor air cannot be reduced to a desired level.
Furthermore, when performing dehumidification as an air purification function, for example, it is necessary to increase the air velocity in order to increase the amount of air pollutants removed from the indoor air, which may reduce the comfort of the user.
Therefore, the present disclosure provides an air conditioner and an air cleaning method that increase the amount of air pollutants removed from indoor air while suppressing a decrease in user comfort.

Hereinafter, the embodiments will be described in detail with reference to the drawings. However, in some cases, more detailed explanations than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations of substantially the same configurations may be omitted.
It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[1. Configuration of the air conditioning device]
FIG. 1 is a vertical cross-sectional view showing an example of an indoor unit 10 of an air-conditioning apparatus 100 according to the present embodiment.

The air-conditioning device 100 in this embodiment is composed of an indoor unit 10 and an outdoor unit (not shown). The indoor unit 10 and the outdoor unit are connected by refrigerant piping and control wiring, and the indoor unit 10 and the outdoor unit form a heat pump. The outdoor unit is provided with a compressor. The indoor unit 10 is attached to a wall surface inside a room.
In this embodiment, the term "indoors" refers to the interior of a room in which the indoor unit 10 is placed.

An indoor unit 10 of an air-conditioning apparatus 100 comprises a housing 1 forming an air inlet 11 and an air outlet 12 , and a front panel 2 provided on the front surface of the housing 1 .
The air inlet 11 is formed on an upper surface of the housing 1, and the air outlet 12 is formed on a lower surface of the housing 1. A rear surface 13 of the housing 1 is attached to a wall surface.
Inside the housing 1, there are provided a fan 20 for sucking air into the housing 1 from the suction port 11, and a heat exchanger 30 for exchanging heat with the air sucked from the suction port 11.
A cross-flow fan is suitable as the fan 20. The fan 20 has a rotation shaft (not shown) connected to a fan motor (not shown).

The downstream air flow path 40, which runs from downstream of the fan 20 to upstream of the air outlet 12, is formed by a rear guider 41 that is arranged downstream of the fan 20 to guide the air flow, a stabilizer 42 that is arranged opposite the rear guider 41, and both side walls of the housing 1 (not shown).

The air outlet 12 is provided with an up-down air direction changing blade 51 and a left-right air direction changing blade 52. The left-right air direction changing blade 52 is positioned upstream of the up-down air direction changing blade 51. The up-down air direction changing blade 51 opens and closes the air outlet 12, adjusting the air blowing out in the up-down direction. The left-right air direction changing blade 52 adjusts the air blowing out in the left-right direction.

A heat exchanger 30, an air filter 70, and an air purifying filter 80A are arranged in the air flow path 60 upstream of the fan 20. The air purifying filter 80A is formed as a separate body from the air filter 70. The air filter 70 is a coarse dust filter intended to capture relatively large dust particles. On the other hand, the air purifying filter 80A is a filter intended to capture fine particles that would pass through the air filter 70, and is preferably a pleated type or a nonwoven fabric type.

The moving device 90A moves the position of the air cleaning filter 80A without deforming the shape of the air cleaning filter 80A, while maintaining the original shape as it is. The moving device 90A includes, for example, a motor 91 and a gear 92, and moves the position of the air cleaning filter 80A by meshing the gear 92 with a rack 81 formed on the outer frame of the air cleaning filter 80A and rotating the gear 92 with the motor 91.
By moving the position of the air purifying filter 80A without changing the shape of the air purifying filter 80A, deterioration of the air purifying filter 80A can be suppressed.
At least a part of the air purification filter 80A is arc-shaped. By making at least a part of the air purification filter 80A arc-shaped, the air purification filter 80A can be arranged in a limited space with good air purification efficiency, and the moving device 90A can be simply configured.

The air purification filter 80A is disposed in the air flow path 60 upstream of the air filter 70. By disposing the air purification filter 80A in the air flow path 60 upstream of the air filter 70, it is possible to suppress the deterioration of the performance of the air purification filter 80A due to condensation during cooling operation, compared to when the air purification filter 80A is disposed in the air flow path 60 between the air filter 70 and the heat exchanger 30.

The moving device 90A is preferably disposed in the air flow path 60 upstream of the air filter 70. By disposing the moving device 90A in the air flow path 60 upstream of the air filter 70, the effect of condensation on the moving device 90A during cooling operation can be suppressed, compared to disposing the moving device 90A in the air flow path 60 between the air filter 70 and the heat exchanger 30, and an increase in ventilation resistance due to the moving device 90A can also be suppressed.

The air conditioning apparatus 100 in this embodiment is configured to be able to perform cooling operation, heating operation, and air cleaning operation MT, and operates according to instructions from the control unit 200.
The air cleaning operation MT includes a filtering operation MT3.
The air cleaning operation MT and the filter operation MT3 will be described with reference to FIG.
In the filtering operation MT3, the moving device 90A moves the position of the air cleaning filter 80A from the standby position shown in FIG. 1 to the dust removal position shown in FIG.

The air conditioning device 100 in this embodiment includes an air quality sensor S1 that detects air pollutants in the air. Based on the amount of air pollutants detected by the air quality sensor S1, the control unit 200 controls a predetermined number of air purification functions FN, which are three or more.
Air pollutants include fine particulate matter such as so-called PM2.5.
For example, when the control unit 200 executes the third air purification function FN3 corresponding to the filter operation MT3, the moving device 90A moves the position of the air purification filter 80A from the standby position shown in FIG. 1 to the dust removal position shown in FIG.

1, the air purification filter 80A is disposed inside the housing 1, that is, substantially outside the air flow path 60. The position of the air purification filter 80A shown in FIG 1 indicates the standby position of the air purification filter 80A.
In the standby position, the air purification filter 80A is disposed inside the front panel 2, and the gear 92 is located on the upper end side of the air purification filter 80A. Therefore, the air purification filter 80A does not cover the suction port 11 on the upstream side of the air filter 70, i.e., the air flow path 60. In this state, the air purification function of the air purification filter 80A does not work.

FIG. 2 is a vertical cross-sectional view showing an example of the indoor unit 10 of the air-conditioning apparatus 100 in this embodiment.
In Fig. 2, the air purification filter 80A covers the suction port 11 on the upstream side of the air filter 70, i.e., a part of the air flow path 60. The position of the air purification filter 80A shown in Fig. 2 indicates the dust removal position of the air purification filter 80A. In this state, the air purification function of the air purification filter 80A, i.e., the third air purification function FN3 shown in Fig. 3, works.

By rotating the motor 91 in the forward direction, the air purifying filter 80A moves from the standby position shown in Fig. 1 to the dust removal position shown in Fig. 2. At that time, the air purifying filter 80A moves to the arrangement position without being deformed and in the same shape as when it was arranged. In other words, the air purifying filter 80A moves in the direction in which the flow path area covering the suction port 11, i.e., the air flow path 60, becomes larger.
Moreover, by rotating the motor 91 in the reverse direction, the air purifying filter 80A moves from the dust removal position shown in Fig. 2 to the standby position shown in Fig. 1. At that time, the air purifying filter 80A moves to the arrangement position without being deformed, and keeps the same shape as when it was arranged. In other words, the air purifying filter 80A moves in the direction in which the flow path area covering the suction port 11, i.e., the air flow path 60, becomes smaller.

In this embodiment, the air purification filter 80A is configured to be movable between the standby position and the dust removal position, but instead of (or in addition to) the air purification filter 80A, the air filter 70 may be configured to be movable between the standby position and the dust removal position. In this case, the dust removal position is a position that covers the suction port 11, and the standby position is, for example, a position along the rear surface 13 of the housing 1. In addition, the air filter 70 can be configured to capture fine particles, so that it can function as an air purification filter.

As shown in FIGS. 1 and 2 , the air conditioning apparatus 100 further includes an ion generating device 43, a human presence sensor S2, a temperature sensor S3, and a control unit 200.
The control unit 200 controls the operation of the air conditioning device 100. In this embodiment, the control unit 200 controls the air cleaning operation of the air conditioning device 100.
The configuration of the control unit 200 will be described with reference to FIG.

The ion generating device 43 is disposed in the downstream air flow path 40 and generates ions and ozone. The ion generating device 43 is disposed, for example, in the rear guider 41. The ion generating device 43 operates according to instructions from the air conditioning device 100.
The configuration of the ion generating device 43 will be described with reference to FIG.
The air cleaning operation by the ion generating device 43 will be described with reference to FIG.

The human presence sensor S2 detects the presence or absence of a human body in the room. The human presence sensor S2 is composed of, for example, an infrared sensor. The detection signal of the human presence sensor S2 is output to the control unit 200. The control unit 200 controls the air purification operation based on the detection result of the human presence sensor S2.

The temperature sensor S3 detects the temperature inside the room. The temperature sensor S3 is composed of, for example, a thermistor. The detection signal of the temperature sensor S3 is output to the control unit 200. The control unit 200 controls the air purification operation based on the detection result of the temperature sensor S3.

[2. Configuration of ion generating device]
FIG. 3 is a diagram showing an example of the configuration of the ion generating device 43.
In the ion generating device 43, a negative high voltage is applied between the discharge electrode 432 and the counter electrode 431 by the high voltage generating device 434, causing a corona discharge, thereby generating negative ions and ozone.

The counter electrode 431 is formed in an arc shape. The discharge electrode 432 is disposed on the axis of the counter electrode 431 at a position where the tip of the discharge electrode 432 protrudes beyond the end face of the counter electrode 431 (protrudes upward in the drawing).
By forming the counter electrode 431 in an arc shape, the distance from the discharge electrode 432 is approximately the same, so that uniform discharge can be caused on the counter electrode 431, enabling efficient discharge.

Materials for the counter electrode 431 include stainless steel, nickel, aluminum, copper, and tungsten, among which stainless steel is versatile and is also preferred in terms of workability. The thickness of the material for the counter electrode 431 should be 0.3 mm or more and 2 mm or less. If the thickness is less than 0.3 mm, the strength will be weak and there will be a problem that the shape will be easily deformed during the manufacturing process. Also, if the thickness is greater than 2 mm, it will be difficult to process.

Materials for the discharge electrode 432 include stainless steel, nickel, aluminum, copper, and tungsten, but stainless steel is versatile and is also preferred in terms of workability. The shape of the discharge electrode 432 has a sharply pointed tip, and the sharper the tip, the less ozone is generated. The diameter of the discharge electrode 432 should be 0.3 mm or more and 1 mm or less. If it is less than 0.3 mm, it is difficult to distinguish it from the tip. Also, if the diameter is greater than 1 mm, it becomes difficult to process.

The high voltage generator 434 applies a negative high voltage between the counter electrode 431 and the discharge electrode 432. The current flowing between the counter electrode 431 and the discharge electrode 432 is a direct current, and when a current of 1 μA or more flows, the amount of ozone generated becomes 25 μg/hr or more. For example, in a 40 L sealed container, the ozone concentration can be increased to about 30 ppb.
Furthermore, when a current of 30 μA or less flows between the opposing electrode 431 and the discharge electrode 432, the amount of ozone generated is about 400 μg/hr. For example, in a 200 L sealed container, the ozone concentration can be made about 100 ppb.
The current flowing between the counter electrode 431 and the discharge electrode 432 is preferably 1 μA or more and 30 μA or less.

In this embodiment, the ion generating device 43 generates negative ions and ozone, but it is sufficient that the ion generating device 43 generates at least one of negative ions and ozone. For example, the ion generating device 43 may generate negative ions but not ozone. The ion generating device 43 may also discharge electricity into moisture to generate a mist containing charged water particles.

[3. Configuration of the control unit and air purification function]
FIG. 4 is a diagram showing an example of the configuration of the control unit 200 and the air cleaning function FN.
The control unit 200 includes a processor 201 such as a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit), a memory device 202 such as a ROM (Read Only Memory) or a RAM (Random Access Memory), and an interface circuit for connecting the air quality sensor S1, etc.
The memory device 202 stores a control program 203 .

The control unit 200 controls the operation of the air conditioning device 100 by the processor 201 executing the control program 203. In this embodiment, the control unit 200 controls the air purification function FN of the air conditioning device 100 by the processor 201 executing the control program 203.

The air conditioning device 100 has a predetermined number of air purification functions, which are three or more.
The air purification function FN indicates a function of removing air pollutants from the air in the room. The air purification function FN includes a predetermined number of air purification functions, which may be three or more.
In this embodiment, the air purification function FN includes a first air purification function FN1, a second air purification function FN2, a third air purification function FN3, and a fourth air purification function FN4. That is, in this embodiment, the predetermined number is four.
The first air purification function FN1 to the fourth air purification function FN4 correspond to an example of a "predetermined number of air purification functions."

The first air cleaning function FN1 indicates a function of removing air pollutants from the indoor air by the air conditioning apparatus 100 executing the dehumidification operation MT1.
The first air cleaning function FN1 corresponds to an example of a "dehumidification function."
The second air cleaning function FN2 indicates a function of removing air pollutants in the indoor air by the air conditioning apparatus 100 executing the fan operation MT2.
The second air cleaning function FN2 corresponds to an example of a "blowing function".

The third air purification function FN3 represents a function of removing air pollutants from the indoor air by performing a filter operation MT3 by the air conditioning apparatus 100. The filter operation MT3 represents an operation of placing the air purification filter 80A in the dust removal position shown in FIG.
By performing the filter operation MT3 simultaneously with the dehumidification operation MT1 or the fan operation MT2, air pollutants in the indoor air can be removed more effectively than when the dehumidification operation MT1 or the fan operation MT2 is performed alone.
The third air cleaning function FN3 corresponds to an example of a "filter function".

The fourth air cleaning function FN4 represents a function of removing air pollutants from the indoor air by executing an ion sending operation MT4 by the air conditioning apparatus 100. The ion sending operation MT4 represents an operation of causing the ion generating device 43 described with reference to Figures 1 to 3 to generate negative ions and ozone, and to send the negative ions and ozone into the room from the air outlet 12.
By performing the ion sending out operation MT4 simultaneously with the dehumidifying operation MT1 or the fan operation MT2, air pollutants in the air in the room can be removed more effectively than when the dehumidifying operation MT1 or the fan operation MT2 is performed alone.
The fourth air purification function FN4 corresponds to an example of an "ion sending function".

The control unit 200 controls the first air purification function FN1 to the fourth air purification function FN4. Specifically, the control unit 200 determines whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection result of the air quality sensor S1. Then, the control unit 200 executes the air purification function that it has decided to execute.

The control unit 200 also determines whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection results of the air quality sensor S1 and the detection results of the human presence sensor S2.

Specifically, when the detection result of the air quality sensor S1 indicates a lack of air purification capability and the human presence sensor S2 does not detect a human body, the control unit 200 sequentially executes the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4, based on a preset first priority order.
In this embodiment, if the current detection value of the air quality sensor S1 is equal to or greater than the previous detection value, the control unit 200 determines that the detection result of the air quality sensor S1 indicates a lack of air purification capability. The detection value of the air quality sensor S1 indicates the amount of air pollutants in the air in the room.
The first priority order is set in the descending order of the first air purification function FN1, the second air purification function FN2, the third air purification function FN3, and the fourth air purification function FN4.
The first priority will be specifically described below.
That is, the first air purification function FN1 has a higher first priority than the second air purification function FN2, the second air purification function FN2 has a higher first priority than the third air purification function FN3, and the third air purification function FN3 has a higher first priority than the fourth air purification function FN4.

In addition, when the detection result of the air quality sensor S1 indicates a lack of air purification capacity and the human presence sensor S2 detects a human body, the control unit 200 sequentially executes the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4 based on a preset second priority order.
The second priority order is set in the descending order of the fourth air purification function FN4, the third air purification function FN3, the second air purification function FN2, and the first air purification function FN1.
The second priority will be specifically described below.
That is, the fourth air purification function FN4 has a second priority higher than the third air purification function FN3. The third air purification function FN3 has a second priority higher than the second air purification function FN2. The second air purification function FN2 has a second priority higher than the first air purification function FN1.

Furthermore, when the room temperature TP detected by the temperature sensor S3 is lower than the temperature threshold ST, the control unit 200 prohibits the execution of the first air purification function FN1.
The temperature threshold ST is set, for example, based on the annual average temperature and annual average humidity in the area where the air conditioning device 100 is installed. For example, when the annual average temperature is 27° C. and the annual average humidity is 70%, the temperature threshold ST is set to 21° C. 21° C. corresponds to the dew point temperature of the heat exchanger 30 when the indoor temperature TP is 27° C. and the humidity is 70%.
That is, when the room temperature TP is lower than the temperature threshold ST, the execution of the first air cleaning function FN1 is prohibited, thereby making it possible to suppress the occurrence of condensation in the heat exchanger 30 shown in FIG.
The temperature threshold ST corresponds to an example of a "threshold value."

In this embodiment, the control unit 200 executes the air purification function based on the detection result of the air quality sensor S1, but is not limited to this. The control unit 200 may display the detection result of the air quality sensor S1 on the display unit. The display unit may include, for example, an LCD (Liquid Crystal Display) or the like, and display an image on the LCD. The air conditioning device 100 may include the display unit, or a device configured to be able to communicate with the air conditioning device 100 may include the display unit. The control unit 200 may, for example, display the detection result of the air quality sensor S1 on the display unit of a remote controller that accepts user instructions for the air conditioning device 100, or may display the detection result of the air quality sensor S1 on the display unit of a smartphone carried by the user.

[4. Processing of the control unit]
Next, the processing of the control unit 200 will be described with reference to FIGS.
5 to 7 are flowcharts showing an example of processing by the control unit 200. In FIG.
First, as shown in FIG. 5, in step S101, the control unit 200 obtains a detection value of the air quality sensor S1.
Next, in step S103, the control unit 200 determines whether or not the detection value is equal to or greater than the activation threshold value SS. The activation threshold value SS indicates a threshold value at which the control unit 200 determines whether or not to execute the air purification function. The activation threshold value SS is, for example, 35 μg/ ^m3 .
If the control unit 200 determines that the detected value is not equal to or greater than the activation threshold value SS (step S103; NO), the process returns to step S101. If the control unit 200 determines that the detected value is equal to or greater than the activation threshold value SS (step S103; YES), the process proceeds to step S105.
Then, in step S105, the control unit 200 acquires the room temperature TP detected by the temperature sensor S3, and determines whether the room temperature TP is equal to or higher than the temperature threshold value ST.
When the control unit 200 determines that the room temperature TP is equal to or higher than the temperature threshold value ST (step S105; YES), the process proceeds to step S107.
Then, in step S107, the control unit 200 starts the dehumidifying operation MT1, and thereafter, the process proceeds to step S111.
When the control unit 200 determines that the room temperature TP is not equal to or higher than the temperature threshold value ST (step S105; NO), the process proceeds to step S109.
Then, in step S109, the control unit 200 starts the fan operation MT2, and thereafter, the process proceeds to step S111.

Next, in step S111, the control unit 200 determines whether or not a predetermined time has elapsed since the start of the dehumidification operation MT1 or the fan operation MT2. The predetermined time is, for example, 120 minutes.
When the control unit 200 determines that a predetermined time has elapsed since the start of the dehumidification operation MT1 or the fan operation MT2 (step S111; YES), the process proceeds to step S125.
Then, in step S125, the control unit 200 stops all of the air cleaning operations MT being executed, and then the process ends.
When the control unit 200 determines that the predetermined time has not elapsed since the start of the dehumidification operation MT1 or the fan operation MT2 (step S111; NO), the process proceeds to step S113.
Then, in step S113, the control unit 200 acquires a detection value of the human presence sensor S2. The detection value of the human presence sensor S2 indicates the presence or absence of a human body in the room.
Next, in step S115, the control unit 200 determines whether or not the human presence sensor S2 has detected a human body.
If it is determined that the human sensor S2 has not detected a human body (step S115; NO), the process proceeds to step S161 shown in Fig. 7. If it is determined that the human sensor S2 has detected a human body (step S115; YES), the process proceeds to step S117.
Then, in step S117, the control unit 200 changes or stops the operation capacity of the air purification operation MT being performed, that is, the dehumidification operation MT1 or the fan operation MT2, and starts the ion sending out operation MT4.

Next, in step S119, the control unit 200 acquires the detection value of the air quality sensor S1.
Next, in step S121, the control unit 200 determines whether the detection value of the air quality sensor S1 is greater than the previous value. A detection value greater than the previous value indicates that the cleanliness of the air in the room has deteriorated. In other words, this indicates that the capacity of the air purification function being performed by the air conditioning device 100 is insufficient.
If the control unit 200 determines that the detection value of the air quality sensor S1 is greater than the previous value (step S121; YES), the process proceeds to step S127 in Fig. 6. If the control unit 200 determines that the detection value of the air quality sensor S1 is not greater than the previous value (step S121; NO), the process proceeds to step S123.
Then, in step S123, the control unit 200 determines whether the detection value of the air quality sensor S1 is equal to or lower than a lower limit SL. The lower limit SL is a threshold value by which the control unit 200 determines whether to end the air purification process. The lower limit SL is, for example, 25 μg/ ^m3 .
If the control unit 200 determines that the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL (step S123; YES), the process proceeds to step S125. If the control unit 200 determines that the detection value of the air quality sensor S1 is not equal to or lower than the lower limit SL (step S123; NO), the process returns to step S111.

If the answer is YES in step S121 in Fig. 5, in step S127, as shown in Fig. 6, the control unit 200 determines whether the detection value of the air quality sensor S1 is equal to or greater than the upper limit SH. The upper limit SH is a threshold value for determining whether or not to execute the "multiple operation process" even when a human body is detected. The "multiple operation process" refers to a process in which multiple operations out of the four air purification operations are executed in parallel. The upper limit SH is, for example, 45 μg/ ^m3 .
If the control unit 200 determines that the detection value of the air quality sensor S1 is not equal to or greater than the upper limit SH (step S127; NO), the process returns to step S111 in Fig. 5. If the control unit 200 determines that the detection value of the air quality sensor S1 is equal to or greater than the upper limit SH (step S127; YES), the process proceeds to step S129.
Then, in step S129, the control unit 200 determines whether or not to execute the multiple motion process. In this embodiment, whether or not to execute the multiple motion process is set in advance by the user.
If the control unit 200 determines that the multiple motion process is not to be executed (step S129; NO), the process returns to step S111 in Fig. 5. If the control unit 200 determines that the multiple motion process is to be executed (step S129; YES), the process proceeds to step S131.
Then, in step S131, the control unit 200 acquires the detection value of the human presence sensor S2.
Next, in step S133, the control unit 200 determines whether or not the human presence sensor S2 has detected a human body.
If the control unit 200 determines that the human sensor S2 has detected a human body (step S133; YES), the process proceeds to step S147. If the control unit 200 determines that the human sensor S2 has not detected a human body (step S133; NO), the process proceeds to step S135.

Then, in step S135, the control unit 200 executes a "first multiple operation process". The "first multiple operation process" refers to a process of sequentially executing, based on a first priority order, air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4. The "first multiple operation process" will be described with reference to FIG. 8.
Next, in step S137, the control unit 200 acquires the detection value of the air quality sensor S1.
Next, in step S139, the control unit 200 determines whether the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL.
If the control unit 200 determines that the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL (step S139; YES), the process proceeds to step S153. If the control unit 200 determines that the detection value of the air quality sensor S1 is not equal to or lower than the lower limit SL (step S139; NO), the process proceeds to step S141.
Then, in step S141, the control unit 200 acquires the detection value of the human presence sensor S2.
Next, in step S143, the control unit 200 determines whether or not the human presence sensor S2 has detected a human body.
When the control unit 200 determines that the human sensor S2 has not detected a human body (step S143; NO), the process returns to step S135. When the control unit 200 determines that the human sensor S2 has detected a human body (step S143; YES), the process proceeds to step S145.
Then, in step S145, the control unit 200 stops all the air purification operations being executed and starts the ion discharge operation MT4. After that, the process proceeds to step S147.

If step S133 is YES, or if the process of step S145 is completed, in step S147, the control unit 200 executes a "second multiple operation process". The "second multiple operation process" refers to a process of sequentially executing the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4 based on the second priority order. The "second multiple operation process" will be described with reference to FIG. 9.
Next, in step S149, the control unit 200 acquires the detection value of the air quality sensor S1.
Next, in step S151, the control unit 200 determines whether the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL.
When the control unit 200 determines that the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL (step S151; YES), the process proceeds to step S153.
Then, in step S153, the control unit 200 stops all of the air cleaning operations MT being executed, and then the process ends.
When the control unit 200 determines that the detection value of the air quality sensor S1 is not equal to or lower than the lower limit SL (step S151; NO), the process proceeds to step S155.
Then, in step S155, the control unit 200 acquires the detection value of the human presence sensor S2.
Next, in step S157, the control unit 200 determines whether or not the human presence sensor S2 has detected a human body.
When the control unit 200 determines that the human sensor S2 has detected a human body (step S157; YES), the process returns to step S147. When the control unit 200 determines that the human sensor S2 has not detected a human body (step S157; NO), the process proceeds to step S159.
Then, in step S159, the control unit 200 stops all air purification operations being performed, and starts the dehumidification operation MT1 or the fan operation MT2. Note that the control unit 200 starts the dehumidification operation MT1 when the indoor temperature TP detected by the temperature sensor S3 is equal to or higher than the temperature threshold ST, and starts the fan operation MT2 when the indoor temperature TP detected by the temperature sensor S3 is not equal to or higher than the temperature threshold ST. Then, the process returns to step S135.

In the case of NO in step S115 in Fig. 5, the control unit 200 starts the "strongest air cleaning operation" in step S161 as shown in Fig. 7. The "strongest air cleaning operation" refers to an air cleaning operation with the highest cleaning ability that can be performed. In this embodiment, when the room temperature TP detected by the temperature sensor S3 is equal to or higher than the temperature threshold ST, the strongest air cleaning operation refers to an operation in which the dehumidification operation MT1, the filter operation MT3, and the ion sending operation MT4 are performed in parallel. When the room temperature TP detected by the temperature sensor S3 is not equal to or higher than the temperature threshold ST, the strongest air cleaning operation refers to an operation in which the blowing operation MT2, the filter operation MT3, and the ion sending operation MT4 are performed in parallel.
Next, in step S163, the detection value of the human presence sensor S2 is obtained.
Next, in step S165, the control unit 200 determines whether or not the human presence sensor S2 has detected a human body.
When the control unit 200 determines that the human sensor S2 has detected a human body (step S165; YES), the process returns to step S105 in Fig. 5. When the control unit 200 determines that the human sensor S2 has not detected a human body (step S165; NO), the process proceeds to step S167.

Then, in step S167, the detection value of the air quality sensor S1 is obtained.
Next, in step S169, the control unit 200 determines whether or not the detection value of the air quality sensor S1 is greater than the previous value.
If the control unit 200 determines that the detection value of the air quality sensor S1 is greater than the previous value (step S169; YES), the process returns to step S163. If the control unit 200 determines that the detection value of the air quality sensor S1 is not greater than the previous value (step S169; NO), the process proceeds to step S171.
Then, in step S171, the control unit 200 determines whether the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL.
If the control unit 200 determines that the detection value of the air quality sensor S1 is not equal to or less than the lower limit SL (step S171; NO), the process returns to step S163. If the control unit 200 determines that the detection value of the air quality sensor S1 is equal to or less than the lower limit SL (step S171; YES), the process proceeds to step S173.
Then, in step S173, the control unit 200 stops all of the air cleaning operations MT being executed, and then the process ends.

As described with reference to Figures 5 to 7, when the indoor temperature TP is equal to or higher than the temperature threshold ST, the control unit 200 starts the dehumidification operation MT1, and when the indoor temperature TP is not equal to or higher than the temperature threshold ST, the control unit 200 starts the fan operation MT2. Therefore, the occurrence of condensation in the heat exchanger 30 can be suppressed.

In addition, when the human presence sensor S2 detects a human body, the control unit 200 stops the dehumidification operation MT1 or the fan operation MT2 and starts the ion emission operation MT4. Therefore, it is possible to prevent a decrease in user comfort.

Furthermore, if the human presence sensor S2 does not detect a human body, the control unit 200 starts the "strongest air purification operation." The "strongest air purification operation" refers to the air purification operation with the highest purification capacity that can be performed. Therefore, the amount of air pollutants removed from the air in the room can be effectively increased.

In addition, when the detection value of the air quality sensor S1 is equal to or lower than the lower limit SL, the control unit 200 stops all air purification operations MT that are being performed, and then the process ends. Therefore, by appropriately setting the lower limit SL, the air purification process can be ended at the appropriate timing.

In addition, if the detection value of the air quality sensor S1 is equal to or greater than the upper limit SH, the multiple operation process is executed even if a human body is detected. Therefore, by appropriately setting the upper limit SH, the amount of air pollutants removed from the indoor air can be appropriately increased even if a human body is detected.

8 is a flowchart showing an example of the first multiple action process of the control unit 200. The first multiple action process is executed in step S135 of FIG.
As shown in FIG. 8, in step S201, the control unit 200 determines whether the dehumidifying operation MT1 or the fan operation MT2 is being performed.
When the control unit 200 determines that the dehumidifying operation MT1 or the fan operation MT2 is being performed (step S201; YES), the process proceeds to step S209. When the control unit 200 determines that the dehumidifying operation MT1 or the fan operation MT2 is not being performed (step S201; NO), the process proceeds to step S203.
Then, in step S203, the control unit 200 acquires the room temperature TP detected by the temperature sensor S3, and determines whether the room temperature TP is equal to or higher than the temperature threshold value ST.
When the control unit 200 determines that the room temperature TP is equal to or higher than the temperature threshold value ST (step S203; YES), the process proceeds to step S205.
Then, in step S205, the control unit 200 starts the dehumidifying operation MT1, and thereafter, the process returns to step S137 in FIG.
When the control unit 200 determines that the room temperature TP is not equal to or higher than the temperature threshold value ST (step S203; NO), the process proceeds to step S207.
Then, in step S207, the control unit 200 starts the fan operation MT2, and thereafter, the process returns to step S137 in FIG.

If the answer is YES in step S201, in step S209, the control section 200 determines whether or not the filter operation MT3 is being executed.
If the control unit 200 determines that the filter operation MT3 is not being executed (step S209; NO), the process proceeds to step S211.
Then, in step S211, the control section 200 starts the execution of the filter operation MT3, and thereafter, the process returns to step S137 in FIG.
When the control unit 200 determines that the filter operation MT3 is being executed (step S209; YES), the process proceeds to step S213.
Then, in step S213, the control unit 200 determines whether or not the ion discharge operation MT4 is being executed.
When the control unit 200 determines that the ion discharge operation MT4 is not being executed (step S213; NO), the process proceeds to step S215.
Then, in step S215, the control unit 200 starts the execution of the ion discharge operation MT4, and then the process returns to step S137 in FIG.
When the control unit 200 determines that the ion discharge operation MT4 is being executed (step S213; YES), the process returns to step S137 in FIG.

As explained with reference to FIG. 8, if the control unit 200 determines in step S133 of FIG. 6 that the human presence sensor S2 has not detected a human body, the control unit 200 sequentially starts the execution of the dehumidification operation MT1 or the fan operation MT2, the filter operation MT3, and the ion sending operation MT4. In other words, the control unit 200 sequentially executes the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4, based on the first priority order. Therefore, the amount of air pollutants removed from the indoor air can be appropriately increased.

9 is a flowchart showing an example of the second multiple action process of the control unit 200. The second multiple action process is executed in step S147 of FIG.
As shown in FIG. 9, in step S301, the control unit 200 determines whether or not the ion discharge operation MT4 is being executed.
When the control unit 200 determines that the ion discharge operation MT4 is not being executed (step S301; NO), the process proceeds to step S303.
Then, in step S303, the control unit 200 starts the execution of the ion discharge operation MT4, and then the process returns to step S149 in FIG.
When the control unit 200 determines that the ion discharge operation MT4 is being executed (step S301; YES), the process proceeds to step S305.
Then, in step S305, the control section 200 determines whether or not the filter operation MT3 is being executed.
When the control unit 200 determines that the filter operation MT3 is not being executed (step S305; NO), the process proceeds to step S307.
Then, in step S307, the control section 200 starts the execution of the filter operation MT3, and thereafter, the process returns to step S149 in FIG.
When the control unit 200 determines that the filter operation MT3 is being executed (step S305; YES), the process proceeds to step S309.

Then, in step S309, the control unit 200 determines whether the dehumidifying operation MT1 or the fan operation MT2 is being executed.
When the control unit 200 determines that the dehumidifying operation MT1 or the fan operation MT2 is being performed (step S309; YES), the process returns to step S149 in Fig. 6. When the control unit 200 determines that the dehumidifying operation MT1 or the fan operation MT2 is not being performed (step S309; NO), the process proceeds to step S311.
Then, in step S311, the control unit 200 obtains the room temperature TP detected by the temperature sensor S3, and determines whether the room temperature TP is equal to or higher than the temperature threshold value ST.
When the control unit 200 determines that the room temperature TP is equal to or higher than the temperature threshold value ST (step S311; YES), the process proceeds to step S313.
Then, in step S313, the control unit 200 starts the dehumidifying operation MT1, and thereafter, the process returns to step S149 in FIG.
When the control unit 200 determines that the room temperature TP is not equal to or higher than the temperature threshold value ST (step S311; NO), the process proceeds to step S315.
Then, in step S315, the control unit 200 starts the fan operation MT2, and thereafter, the process returns to step S149 in FIG.

As explained with reference to FIG. 9, when the control unit 200 determines in step S133 of FIG. 6 that the human presence sensor S2 has detected a human body, the control unit 200 sequentially starts the execution of the ion sending operation MT4, the filter operation MT3, and the dehumidification operation MT1 or the fan operation MT2. In other words, the control unit 200 sequentially executes the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4, based on the second priority order. Therefore, it is possible to increase the amount of air pollutants removed from the indoor air and suppress a decrease in user comfort.

[5. Effects, etc.]
As described above, the control unit 200 of the air conditioning device 100 determines whether or not to execute each of a predetermined number of three or more air purification functions based on the detection results of the air quality sensor S1, and executes the air purification function that it has decided to execute.

The air conditioning device 100's air purification method determines whether or not to execute each of a predetermined number of three or more air purification functions based on the detection results of the air quality sensor S1, and executes the air purification function that has been decided to be executed.

The air conditioning device 100 and the air purification method appropriately determine whether or not to execute each of a predetermined number of three or more air purification functions, thereby increasing the amount of air pollutants removed from the air in the room and preventing any reduction in user comfort.

When the detection result of the air quality sensor S1 indicates a lack of air purification capacity, the control unit 200 sequentially executes the air purification functions that are not being executed among the predetermined number of air purification functions based on a predetermined priority order that has been set in advance.

With this configuration, by appropriately setting the predetermined priority, it is possible to increase the amount of air pollutants removed from the indoor air and prevent a decrease in user comfort.

The predetermined number of air purification functions includes at least three of the following: a fourth air purification function FN4 that sends out at least one of ions and ozone into the room; a third air purification function FN3 that closes the air purification filter 80A that is configured to be able to open and close the intake port 11; a second air purification function FN2 that dehumidifies the air in the room; and a first air purification function FN1 that circulates the air in the room.

According to this configuration, the first air purification function FN1 and the second air purification function FN2 cannot be executed in parallel, but the first air purification function FN1, the third air purification function FN3, and the fourth air purification function FN4 can be executed in parallel, and the second air purification function FN2, the third air purification function FN3, and the fourth air purification function FN4 can be executed in parallel. Therefore, since at least three functions out of the first air purification function FN1 to the fourth air purification function FN4 are included, by executing an appropriate function out of the first air purification function FN1 to the fourth air purification function FN4, it is possible to increase the amount of air pollutants removed from the air in the room and suppress a decrease in user comfort.

The predetermined priority order is set in the following descending order: fourth air purification function FN4, third air purification function FN3, second air purification function FN2, and first air purification function FN1.

With this configuration, the fourth air purification function FN4 and the third air purification function FN3 are executed with priority over the second air purification function FN2 and the first air purification function FN1. Therefore, it is possible to suppress a decrease in the comfort of the user.

The control unit obtains the detection result of the temperature sensor S3 that detects the indoor temperature, and prohibits the execution of the second air purification function FN2 if the indoor temperature TP is lower than the temperature threshold ST.

This configuration can prevent condensation from occurring in the heat exchanger 30.

The control unit 200 is configured to be able to communicate with the ventilation fan, and the predetermined number of air purification functions include a function to exhaust indoor air to the outside by operating the ventilation fan.

With this configuration, indoor air can be expelled to the outside by operating the ventilation fan. This allows for a variety of air purification functions to be realized.

The control unit 200 is configured to be able to communicate with the air purifier, and the predetermined number of air purification functions includes a function to purify the air in the room by operating the air purifier.

With this configuration, the air in the room can be purified by operating the air purifier. Therefore, a variety of air purification functions can be realized.

The control unit 200 obtains the detection results of the human presence sensor S2, which detects the presence or absence of a human body, and determines whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection results of the air quality sensor S1 and the human presence sensor S2.

With this configuration, a decision is made as to whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection results of the air quality sensor S1 and the detection results of the human presence sensor S2. Therefore, it is possible to appropriately decide whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4.

When the detection result of the air quality sensor S1 indicates a lack of air purification capacity and the human presence sensor S2 does not detect a human body, the control unit 200 sequentially executes the not-executing air purification functions among the first air purification function FN1 to the fourth air purification function FN4 based on a preset first priority order. When the detection result of the air quality sensor S1 indicates a lack of air purification capacity and the human presence sensor S2 detects a human body, the control unit 200 sequentially executes the not-executing air purification functions among the first air purification function FN1 to the fourth air purification function FN4 based on a preset second priority order.

With this configuration, by appropriately setting the first priority and the second priority, it is possible to increase the amount of air pollutants removed from the indoor air and prevent a decrease in user comfort.

The predetermined number of air purification functions includes at least three of the following: a fourth air purification function FN4 that sends out at least one of ions and ozone into the room; a third air purification function FN3 that closes the air purification filter 80A that is configured to be able to open and close the intake port 11; a second air purification function FN2 that dehumidifies the air in the room; and a first air purification function FN1 that circulates the air in the room.

According to this configuration, the first air purification function FN1 and the second air purification function FN2 cannot be executed in parallel, but the first air purification function FN1, the third air purification function FN3, and the fourth air purification function FN4 can be executed in parallel, and the second air purification function FN2, the third air purification function FN3, and the fourth air purification function FN4 can be executed in parallel. Therefore, since at least three functions out of the first air purification function FN1 to the fourth air purification function FN4 are included, by executing an appropriate function out of the first air purification function FN1 to the fourth air purification function FN4, it is possible to increase the amount of air pollutants removed from the air in the room and suppress a decrease in user comfort.

The first priority is set in descending order of the first air purification function FN1, the second air purification function FN2, the third air purification function FN3, and the fourth air purification function FN4, and the second priority is set in descending order of the fourth air purification function FN4, the third air purification function FN3, the second air purification function FN2, and the first air purification function FN1.

According to this configuration, for example, when the human presence sensor S2 detects a human body, it is possible to suppress a decrease in the user's comfort. Also, for example, when the human presence sensor S2 does not detect a human body, it is possible to increase the amount of air pollutants removed from the air in the room.

The control unit 200 obtains the detection result of the temperature sensor S3 that detects the indoor temperature, and prohibits the execution of the first air purification function FN1 if the indoor temperature TP is lower than the temperature threshold ST.

This configuration can prevent condensation from occurring in the heat exchanger 30.

The control unit 200 is configured to be able to communicate with the ventilation fan, and the predetermined number of air purification functions include a function to exhaust indoor air to the outside by operating the ventilation fan.

With this configuration, indoor air can be expelled to the outside by operating the ventilation fan. This allows for a variety of air purification functions to be realized.

The control unit 200 is configured to be able to communicate with the air purifier, and the predetermined number of air purification functions includes a function to purify the air in the room by operating the air purifier.

With this configuration, the air in the room can be purified by operating the air purifier. Therefore, a variety of air purification functions can be realized.

The control unit 200 is configured to be able to communicate with a display unit that displays images, and causes the display unit to display the detection results of the air quality sensor.

According to this configuration, the detection results of the air quality sensor are displayed on the display unit. This allows the user to easily check the progress of air pollutants. This improves user convenience.

6. Other embodiments
As described above, the above-mentioned embodiment has been described as an example disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to an embodiment in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the above-mentioned embodiment to create a new embodiment.
Therefore, other embodiments will be exemplified below.

In this embodiment, the air conditioning apparatus 100 is described as having four air purification functions, but the air conditioning apparatus 100 may have three or more air purification functions. For example, the air conditioning apparatus 100 may have three air purification functions, or the air conditioning apparatus 100 may have five or more air purification functions. The greater the number of air purification functions (i.e., the predetermined number), the more improved the air purification effect. The smaller the number of air purification functions (i.e., the predetermined number), the more simplified the processing of the control unit 200.
The air cleaning function may also be performed by a device other than the air conditioning device 100. For example, the air cleaning function may include a function of discharging indoor air to the outside by a ventilation fan. Also, for example, the air cleaning function may include a function of purifying air by an air purifier.

In this embodiment, the control unit 200 determines whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection results of the air quality sensor S1 and the detection results of the human presence sensor S2, but it may also determine whether or not to execute each of the first air purification function FN1 to the fourth air purification function FN4 based on the detection results of the air quality sensor S1.
For example, when the detection result of the air quality sensor S1 indicates a lack of air purification capability, the control unit 200 sequentially executes the air purification functions that are not being executed among the first air purification function FN1 to the fourth air purification function FN4 based on a predetermined priority order that has been set in advance.
The predetermined priority order is set, for example, in the descending order of the fourth air purification function FN4, the third air purification function FN3, the second air purification function FN2, and the first air purification function FN1. That is, the predetermined priority order is the same as the second priority order.
By configuring in this manner, it is possible to increase the amount of air pollutants removed from the indoor air and to suppress any decrease in user comfort.
Furthermore, in this embodiment, the air quality sensor S1, the human presence sensor S2, and the temperature sensor S3 are arranged in the air conditioning apparatus 100, but the control unit 200 may acquire the detection results of the air quality sensor S1, the human presence sensor S2, and the temperature sensor S3. For example, at least one of the air quality sensor S1, the human presence sensor S2, and the temperature sensor S3 may be arranged in a device other than the air conditioning apparatus 100. For example, the air quality sensor S1, the human presence sensor S2, and the temperature sensor S3 may be arranged in an air purifier.

In addition, for example, the step units of the operations shown in each of Figures 5 to 9 are divided according to the main processing content in order to make it easier to understand the processing of the control unit 200, and the present invention is not limited by the manner in which the processing units are divided or the names of the processing units. Depending on the processing content, the processing units may be divided into more step units. Also, one step unit may be divided so as to include more processing. Also, the order of the steps may be changed as appropriate within the scope of the present invention.

The air cleaning method of the air conditioning device 100 can be realized by having the processor 201 of the control unit 200 execute a control program 203 corresponding to the air cleaning method of the air conditioning device 100. The control program 203 can also be recorded on a computer-readable recording medium. The recording medium can be a magnetic or optical recording medium or a semiconductor memory device. Specifically, portable or fixed recording media such as a flexible disk, HDD, CD-ROM (Compact Disk Read Only Memory), DVD, Blu-ray (registered trademark) Disc, magneto-optical disk, flash memory, and card-type recording media can be mentioned. The recording medium can also be a non-volatile storage device such as a RAM or ROM, which is an internal storage device of the control unit 200. In addition, the control program 203 corresponding to the air purification method of the air conditioning device 100 can be stored in a server device or the like, and the air purification method of the air conditioning device 100 can be realized by downloading the control program 203 from the server device to the control unit 200.

The above-described embodiments are intended to illustrate the technology disclosed herein, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

As described above, the air conditioning device and air purification method disclosed herein can be used to remove air pollutants from indoor air.

REFERENCE SIGNS LIST 100 Air conditioner 10 Indoor unit 1 Housing 11 Intake port 12 Air outlet 2 Front panel 20 Fan 30 Heat exchanger 40 Downstream air flow path 41 Rear guider 42 Stabilizer 43 Ion generator 431 Counter electrode 432 Discharge electrode 434 High voltage generator 51 Up/down air direction changing blade 52 Left/right air direction changing blade 60 Air flow path 70 Air filter 80A Air purification filter 90A Movement device 91 Motor 92 Gear 200 Control unit 201 Processor 202 Memory device 203 Control program FN Air purification function FN1 First air purification function (dehumidification function)
FN2 Second air purifier function (blower function)
FN3 3rd air purifier function (filter function)
FN4 4th air purifying function (ion emission function)
MT Air purification operation MT1 Dehumidification operation MT2 Fan operation MT3 Filter operation MT4 Ion emission operation S1 Air quality sensor S2 Human presence sensor S3 Temperature sensor SH Upper limit value SL Lower limit value SS Start threshold value ST Temperature threshold value (threshold value)

Claims (10)

A predetermined number of air purification functions, which are three or more;
A control unit that controls the predetermined number of air purification functions;
Equipped with
The control unit is
Obtaining detection results from an air quality sensor that detects fine particulate matter as an air pollutant;
determining whether or not to execute each of the predetermined number of air cleaning functions based on the detection result of the air quality sensor;
Execute the air purifying function that you have decided to execute,
The predetermined number of air cleaning functions are
The air conditioner includes an ion sending function for sending at least one of ions and ozone into a room, a filter function for closing a filter configured to be able to open and close an intake port, a dehumidification function for dehumidifying the air in the room, and a blowing function for circulating the air in the room,
The control unit is
Obtaining the detection result of a human presence sensor that detects the presence or absence of a human body;
determining whether or not to execute each of the predetermined number of air cleaning functions based on the detection result of the air quality sensor and the detection result of the human presence sensor;
The control unit is
When the detection result of the air quality sensor indicates a lack of air cleaning ability and the human presence sensor does not detect a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset first priority order;
When the detection result of the air quality sensor indicates a lack of air cleaning ability and the human presence sensor detects a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset second priority order;
the first priority is set in descending order of the dehumidifying function, the air blowing function, the filtering function, and the ion sending function;
The second priority order is set to descend in the order of the ion sending function, the filtering function, the air blowing function, and the dehumidifying function.
Air conditioning units. The control unit is
when the detection result of the air quality sensor indicates a shortage of air cleaning capability, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed in sequence based on the second priority order.
The air conditioning apparatus according to claim 1. The control unit acquires a detection result of a temperature sensor that detects a temperature inside a room,
When the indoor temperature is lower than a threshold value, execution of the dehumidification function is prohibited.
The air conditioning apparatus according to claim 1 or 2 . The control unit is configured to be able to communicate with a ventilation fan,
The predetermined number of air cleaning functions includes a function of discharging indoor air to the outside by operating the ventilation fan.
The air conditioning apparatus according to claim 2. The control unit is configured to be able to communicate with the air purifier,
The predetermined number of air cleaning functions includes a function of cleaning the air in a room by operating the air purifier.
The air conditioning apparatus according to claim 2 or 4 . The control unit is
Obtain the detection result of a temperature sensor that detects the indoor temperature,
When the indoor temperature is lower than a threshold value, execution of the dehumidification function is prohibited.
The air conditioning apparatus according to claim 1. The control unit is configured to be able to communicate with a ventilation fan,
The predetermined number of air cleaning functions includes a function of discharging indoor air to the outside by operating the ventilation fan.
The air conditioning apparatus according to claim 1. The control unit is configured to be able to communicate with the air purifier,
The predetermined number of air cleaning functions includes a function of cleaning the air in a room by operating the air purifier.
The air conditioning apparatus according to claim 1 or 7 . The control unit is
A display unit that displays an image is configured to be capable of communicating with the display unit,
displaying the detection result of the air quality sensor on the display unit;
The air-conditioning apparatus according to any one of claims 1 to 8 . An air cleaning method for an air conditioner having a predetermined number of air cleaning functions, the method comprising:
Obtaining detection results from an air quality sensor that detects fine particulate matter as an air pollutant;
determining whether or not to execute each of the predetermined number of air cleaning functions based on the detection result of the air quality sensor;
Execute the air purifying function that you have decided to execute,
The predetermined number of air cleaning functions are
The air conditioner includes an ion sending function for sending at least one of ions and ozone into a room, a filter function for closing a filter configured to be able to open and close an intake port, a dehumidification function for dehumidifying the air in the room, and a blowing function for circulating the air in the room,
Obtaining the detection result of a human presence sensor that detects the presence or absence of a human body;
determining whether or not to execute each of the predetermined number of air cleaning functions based on the detection result of the air quality sensor and the detection result of the human presence sensor;
When the detection result of the air quality sensor indicates a lack of air cleaning ability and the human presence sensor does not detect a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset first priority order;
When the detection result of the air quality sensor indicates a lack of air cleaning ability and the human presence sensor detects a human body, the air cleaning functions that are not being executed among the predetermined number of air cleaning functions are executed sequentially based on a preset second priority order;
the first priority is set in descending order of the dehumidifying function, the air blowing function, the filtering function, and the ion sending function;
The second priority order is set to descend in the order of the ion sending function, the filtering function, the air blowing function, and the dehumidifying function.
Air purification methods.

Images