JP6161444B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner that performs at least one of a humidifying operation and a dehumidifying operation.

An air conditioner that performs an air cleaning operation is generally provided with a fan disposed in a casing having an inlet and an outlet and a dust detection sensor that detects air contamination. Some of these air conditioners have an intermittent operation mode in which the fan is operated intermittently when the degree of air contamination detected by the dust detection sensor is small. When the fan is stopped in the intermittent operation mode and the air contamination level detected by the dust detection sensor increases, the intermittent operation mode is canceled and the fan is started.

JP 2006-57942 A

However, when the degree of air contamination detected by the dust detection sensor is small, the fan is stopped because the operation in the intermittent operation mode is started. However, immediately after the fan operation is stopped, the fan detection is detected, for example, by the dust detection sensor. In some cases, the air pollution level increases, the intermittent operation mode is canceled, and the fan operation is started. In this case, there is a problem that the intermittent operation mode is canceled immediately after the intermittent operation mode is started.

Accordingly, an object of the present invention is to provide an air conditioner that can prevent the intermittent operation mode from being released immediately after the fan intermittent operation mode is started.

An air conditioner according to a first aspect of the present invention controls a fan disposed in a casing having a suction port and an air outlet, an air contamination detection means that is disposed in the casing and detects air contamination, and the fan. An intermittent operation mode in which the fan is intermittently operated so that the fan stop state and the fan drive state are alternately repeated when the air contamination level detected by the air contamination detection unit is small. And the release condition for releasing the intermittent operation mode includes a condition that the degree of air contamination detected by the air contamination detection means is a predetermined amount or more, and the control means includes the intermittent operation mode. when said fan satisfies the release condition when it is stopped, to release the intermittent operation mode, there is to initiate the operation of the fan in the intermittent operation In this mode, detection of whether the release condition is satisfied is not performed until a predetermined time elapses from the start of the fan stop state, and the fan stop state is reached after a predetermined time elapses from the start of the fan stop state. Whether or not the release condition is satisfied is detected until the operation is completed and during the fan driving state .

In this air conditioner, the fan operation is not started until the predetermined time has elapsed since the fan stopped in the intermittent operation mode, regardless of whether the release condition (fan operation start condition) is satisfied. After the operation mode is started, the fan is operated for at least a predetermined time. Therefore, immediately after the intermittent operation mode of the fan is started, it is possible to prevent the intermittent operation mode from being released and the fan operation from being started.

In this air conditioner, when the air pollution level increases after the intermittent operation mode in which the fan is operated intermittently when the air pollution level is small, the intermittent operation mode is canceled and the fan is operated. You can start.

  An air conditioner according to a second invention is the air conditioner according to the first invention, further comprising humidity detecting means for detecting humidity, wherein the humidity detected by the humidity detecting means is within a predetermined range. The fan operation start condition includes a condition that the humidity detected by the humidity detecting means is outside a predetermined range.

  In this air conditioner, when the humidity is within a predetermined range, after starting the intermittent operation mode in which the fan is operated intermittently, when the humidity decreases, the intermittent operation mode is canceled and the fan is operated. You can start.

  As described above, according to the present invention, the following effects can be obtained.

In the first aspect of the invention, the fan operation is not started until a predetermined time elapses after the fan stops in the intermittent operation mode regardless of whether or not the fan operation start condition is satisfied.
After the fan intermittent operation mode is started, the fan is operated for at least a predetermined time. Therefore, immediately after the intermittent operation mode of the fan is started, the intermittent operation mode is canceled,
It is possible to prevent the fan from being started.

In the first invention, when the air pollution level increases after the intermittent operation mode in which the fan is operated intermittently when the air pollution level is small, the intermittent operation mode is canceled and the fan is operated. You can start.

In the second invention, when the humidity is within a predetermined range, after starting the intermittent operation mode in which the fan is operated intermittently, when the humidity decreases, the intermittent operation mode is canceled and the fan is operated. You can start.

1 is a perspective view of an air conditioner according to an embodiment of the present invention. It is a side view of the air conditioner shown in FIG. It is a conceptual diagram which shows the path | route of the ventilation in the air conditioner shown in FIG. It is an exploded view of the air conditioner shown in FIG. It is a front view of the air conditioner shown in FIG. It is the schematic of the operation part of the air conditioner shown in FIG. It is a functional block diagram of the air conditioner shown in FIG. It is a flowchart which shows operation | movement of the air conditioner of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Configuration of air conditioner]
As shown in FIGS. 1 to 4 and 7, an air conditioner 1 according to an embodiment of the present invention includes a casing 2 including a main body case 2 a and a front panel 2 b, an electric dust collector 3, and a streamer discharge. Unit 4, fan 5, dust detection sensor 6, odor detection sensor 7, temperature detection sensor 8, humidity detection sensor 9, filter unit 20, humidification unit 30, operation unit 70, and display unit 80 And a control unit (control means) 90.

As shown in FIG. 1, the front of the air conditioner 1 is covered with a front panel 2b. Below the front is a portion that is not covered by the front panel 2b, and the lower suction port 11 is provided in that portion. As shown in FIG. 2, a part of the side surface of the air conditioner 1 is covered with a side suction port forming member 2c made of synthetic resin, which is a part of the main body case 2a. The side suction port forming member 2c is formed with a first side suction port 12 for taking in air so as to extend in the vertical direction. That means
The first side suction port 12 has a vertical dimension larger than a horizontal dimension. Moreover, although not shown in figure, a part of side surface on the opposite side of the air conditioner 1 is similarly covered with the side inlet formation member 2c. In the side suction port forming member 2c, a second side suction port 13 is formed at a position facing the first side suction port 12 so as to extend in the vertical direction. The vertical and horizontal dimensions of the second side suction port 13 are:
The dimensions are the same as those of the first side inlet 12. Hereinafter, the first side inlet 12 and the second side inlet 1
3 and the lower suction port 11 are referred to as the suction port 10.

The air outlet 14 through which the air sucked into the air conditioner 1 is blown out is provided on the upper surface of the air conditioner 1 as shown in FIGS. 1 and 4. As shown in FIG. 3, the fan 5 generates an air flow 15 from the inlet 10 to the outlet 14. Dust and odor components are removed from the indoor air sucked from the suction port 10 by the filter unit 20, and clean air is blown out from the fan 5.

<Electric dust collector 3>
As shown in FIG. 4, the electrostatic precipitator 3 has a vertically long cylindrical shape, one near each of the first side suction port 12 and the second side suction port 13. Vertically along the inlet 10
It is installed detachably. Electric dust collector 3 disposed in the vicinity of the first side suction port 12
Is the electric dust collector 3L. The electrostatic precipitator 3 disposed in the vicinity of the second side suction port 13 is an electrostatic precipitator 3R. The vertical and horizontal dimensions of the electrostatic precipitator 3 are larger than the vertical and horizontal dimensions of the suction port 10, and the electrostatic precipitator 3 is in contact with the side suction port forming member 2 c so that there is as little gap as possible. Therefore, the air sucked from the suction port 10 is
All are configured to pass through the electric dust collector 3.

The electric dust collector 3 charges relatively small dust floating in the sucked air. Specifically, there are two positive and negative electrodes in the electrostatic precipitator 3, and when a high voltage is applied to a tungsten ionization wire that is the positive electrode of the two positive and negative electrodes, a potential difference is generated between the two electrodes. And corona discharge occurs. Then, the dust in the air passing through the electrostatic precipitator 3 is charged by this discharge.

<Filter unit 20>
As shown in FIG. 3, the filter unit 20 includes a pre-filter 21 and a HEPA (High E
(Ficiency Particulate Air Filter) filter 22 (
Hereinafter, it is described as a dust collection filter 22) and a deodorizing filter 23. First,
Large dust is removed by the pre-filter 21 arranged on the most upstream side. Next, finer dust is removed by the dust collection filter 22. Further, the air that has passed through the dust collection filter 22 is decomposed or adsorbed by formaldehyde, odor components, and the like by a deodorization filter 23 that includes activated carbon and is disposed on the most downstream side.

<Streamer discharge unit 4>
A part of the air blown out from the fan 5 is sent to the streamer discharge unit 4 as a tributary 16 shown in FIG. When this tributary 16 passes through the streamer discharge unit 4, active species are supplied by the streamer discharge. The tributary 16 supplied with the active species is blown out from the discharge port 17 to the front of the pre-filter 21 as a plurality of diversions. The plurality of diverted flows join the indoor air sucked from the prefilter 21 to collect the dust collection filter 22 and the deodorizing filter 2.
Reach up to 3. The deodorizing effect is enhanced by the active species reaching the deodorizing filter 23.

The streamer discharge unit 4 has a tungsten needle electrode as a positive electrode and a plate electrode (counter electrode) located near the needle electrode and opposed to the electrode. By applying a high voltage to the needle-like electrode, streamer discharge, which is a kind of plasma discharge, is generated. Active species with high oxidative decomposition power are generated when the discharge is generated. These active species include fast electrons, ions, hydroxyl radicals, and excited oxygen molecules, and these active species are in the air consisting of small organic molecules such as ammonia, aldehydes, nitrogen oxides, etc. Decomposes harmful and odorous components.

The generated air containing the active species flows into two vertical wind passage members 18 as shown in FIG. The first side suction port 12 and the second side suction port 13 of the humidifier 1 are long openings in the vertical direction as described above, but the two vertical air passage members 18 are the first side suction port 12 and the first side suction port 12. Arranged along the two side suction ports 13. In each vertical wind passage member 18, a plurality of discharge ports 17 are formed along the vertical direction of the first side suction port 12 and the second side suction port 13. The air containing the active species that has flowed into the vertical wind passage member 18 is blown out from the discharge port 17 before the prefilter 21 of the filter unit 20.

<Fan 5>
The fan 5 is disposed in the casing 2, and more specifically, is disposed between the humidification unit 30 and the air outlet 14. A fan motor 5a is connected to the fan 5,
When the fan motor 5a is driven by the control unit 90, the fan 5 rotates.

<Dust detection sensor 6>
The dust detection sensor 6 is provided in the upper part in the humidifier 1 and detects the amount of dust contained in the air around the humidifier 1.

<Odor detection sensor 7>
The odor detection sensor 7 is provided in the upper part in the humidifier 1 and detects the odor intensity of the air around the humidifier 1.

<Temperature detection sensor 8>
The temperature detection sensor 8 is provided in the upper part in the humidifier 1 and detects the temperature of the air around the humidifier 1.

<Humidity detection sensor 9>
The humidity detection sensor 9 is provided in the upper part in the humidifier 1 and detects the humidity of the air around the humidifier 1.

<Humidification unit 30>
The humidification unit 30 is disposed between the filter unit 20 and the fan 5, and includes a humidification rotor 31, a water storage tank 32, and a water tray 33 as shown in FIG. 5.

The humidification rotor 31 includes a humidification filter 34 that supplies water to the air to humidify the air, and a watering device 35 that irrigates the humidification filter 34 by applying water to the humidification filter 34. The humidification filter 34 is formed in a disk shape with a nonwoven fabric, for example, and is attached to the swivel frame 41 of the watering device 35. The water supplied from the water tray 33 evaporates while the humidifying filter 34 rotates together with the swivel frame 41. Since the humidifying filter 34 is disposed above the water level when the water tray 33 is full, it is not in direct contact with the water in the water tray 33.

The water hanger 35 includes a swivel frame 41, a plurality of water hangers 42, and a drive motor 43 (FIG. 7).
Reference). The revolving frame 41 has a rotating shaft 44 located at the center thereof supported in a detachable and rotatable manner on a bearing portion 33a of the water tray 33. As a result, the humidifying rotor 31 can be attached to and detached from the water tray 33 and rotated. Supported as possible.

A plurality of water hanger portions 42 are installed at equal intervals on the outer frame portion 45 of the swivel frame 41. This water hanger part 42 is formed in a concave shape so that water can be stored inside, and by the rotation of the humidification rotor 31, each water hanger part 42 rises after being sequentially immersed in the water tray 33, Repeat the action of flooding. When the water hanging part 42 is submerged, water flows into the water hanging part 42, and the water accumulated in the water hanging part 42 as the water hanging part 42 rises through an opening (not shown) formed in the swivel frame 41. Flows toward the humidifying filter 34. Thereby, water is supplied to the humidifying filter 34 and the humidifying filter 34 is submerged.

The drive motor 43 is a motor for rotationally driving the watering device 35. The drive motor 43 is driven and controlled by the control unit 90. In addition, although mentioned later for details, the humidification rotor 3
1 rotates only when the humidifying operation is performed. Therefore, air cleaning operation (hereinafter,
When only the air cleaning operation is performed), the humidification rotor 31 is stopped, and water is not supplied to the humidification rotor 31 from the water tray 33. For this reason, after the rotation of the humidification rotor 31 is stopped, the water adsorbed by the humidification rotor 31 is supplied to the air and the humidification rotor 31 is dried. As a result, water is not supplied from the humidification rotor 31 to the air.

The water storage tank 32 is detachable from the humidifying device 1 (see FIG. 1), and is stored in the humidifying device 1 when mounted on the air conditioner 1. In addition, a water inlet (not shown) is provided at the lower part of the water storage tank 32, and the water in the water tank 32 flows into the water tray 33 through the water inlet due to a decrease in the water level in the water tray 33. .

The water tray 33 is a tray for supplying water to the humidification rotor 31, and stores water. The water tray 33 is provided with a float 50 that determines whether or not the amount of water in the water tray 33 is equal to or greater than a predetermined amount.

The float 50 includes a float body 51 that floats on water stored in the water tray 33, and a float detector 52. The float detection unit 52 includes a detection target 53 that is fixed to the float main body 51 and moves as the float main body 51 moves, and a detection element 54 that is fixed at a predetermined position outside the water tray 33. The detected body 53 is a magnet. As a result, the position of the float body 51 in the water tray 33 with respect to the outside of the water tray 33 changes, whereby the position of the detected body 53 with respect to the detection element 54 changes and the water level in the water tray 33 decreases. The position of the detection object 53 with respect to the element 54 changes. The detection element 54 is a reed switch that detects the detection target 54 depending on the distance from the detection target 53, and is a contact portion that turns on / off under the influence of the magnetic field from the detection target 53 (see FIG. Not shown). Also,
The detection element 54 can detect the detection target 53 when the float main body 51 is in a state of floating in water, and cannot detect the detection target 53 when the float 45 main body 51 is in a lowered state. Is arranged. Furthermore, when the water tray 33 is not housed in the air conditioner 1, the detection element 54 is designed to be disposed at a position where the detected object 53 cannot be detected.

<Air cleaning operation (humidification operation)>
The air cleaning operation (humidification operation) by the air conditioner 1 will be described with reference to FIG. The air sucked from the first side suction port 12 and the second side suction port 13 is converted into the electric dust collector 3.
The air passes through the discharge part of the electrostatic precipitator 3. At that time, dust or the like contained in the air is positively charged. Then, the air reaches the filter unit 20. On the other hand, lower suction port 1
The air sucked from 1 reaches the filter unit 20.

In the filter unit 20, the air first passes through the prefilter 21. At that time, relatively large dust and dust are removed from the air by the pre-filter 21.

The air that has passed through the prefilter 21 passes through the dust collection filter 22. The charged dust in the air is adsorbed by the dust collection filter 22.

  The air that has passed through the dust collecting filter 22 passes through the deodorizing filter 23 and is deodorized at this time.

Thereafter, the air reaches the humidification rotor 31 of the humidification unit 30. The air passes through the humidification rotor 31 and is humidified.

The air that has passed through the filter unit 20 and the humidification rotor 31 and has been purified is blown out into the room from the outlet 14. Further, a part of the purified air is introduced into the streamer discharge unit 4 as a tributary 16 without being blown into the room.

Active species are generated by the streamer discharge in the streamer discharge unit 4. The air containing the active species passes through the two vertical ventilation path members 18 and is discharged from the plurality of discharge ports 17 formed in each vertical ventilation path member 18 in front of the prefilter 21. The air containing the active species is mixed with the suction air and sucked into the prefilter 21 and the dust collection filter 22. The air containing these active species inactivates or extinguishes viruses, molds, bacteria, and the like.

<Operation unit 70>
The operation unit 70 is provided on the upper surface of the humidifying device 1. As shown in FIG. 6, the operation unit 70 includes an operation on / off switch 71, a humidification on / off switch 72, a humidification switching switch 73, an ECO power saving switch 74, and an air volume change switch 75. .

The operation on / off switch 71 is a switch for selecting operation or stop of the air conditioner 1.
If the operation on / off switch 71 is pressed in a state where the air conditioner 1 is stopped, an air cleaning operation for driving the fan 5 is started. On the other hand, the operation on / off switch 7 in the state where the air purification operation is being performed.
Operation stops when 1 is pressed.

The humidification ON / OFF switch 72 is a switch for switching between the humidification OFF mode and the humidification ON mode. When the humidification on / off switch 72 is pressed in a humidified state, the mode changes to the humidified mode.
At this time, a lamp indicating that the humidification mode is on is turned on. On the other hand, in humidification mode,
When the humidification on / off switch 72 is pressed, the state changes to the humidification off state. At that time, the lamp is turned off. In the present embodiment, in the humidification cut-off mode, only the air purification operation is performed without performing the humidification operation regardless of the humidity level. On the other hand, in the humidification mode, when the continuous operation mode is set, the air cleaning operation and the humidification operation are performed regardless of the humidity level. When the automatic operation mode is set, only the air cleaning operation is performed depending on the humidity level. May be performed, and an emptying operation and a humidification operation may be performed. In the humidification mode, even if the humidification / off switch 72 is pressed to switch from the humidification mode to the humidification cut mode, the emptying operation continues.

The humidification changeover switch 73 is a switch for changing the mode of the humidification operation. The humidifying operation mode includes an automatic operation mode and a continuous operation mode. When the humidification changeover switch 73 is pressed in the humidified state, these modes are switched under the control of the control unit 90.

The automatic operation mode is a mode in which the air conditioner 1 automatically switches between the humidification operation and the air cleaning operation with reference to the target humidity (for example, humidity 50%). In the present embodiment, when the humidification mode is switched to the automatic operation mode, the fan 5 is driven and the rotation of the humidification rotor 31 is stopped, the humidification rotor is stopped, the fan 5 is driven, and the humidification rotor 31 is driven. Is automatically switched to the humidified rotor driving state in which is rotated. Therefore, in the humidification rotor stop state, the humidification operation is performed without performing the humidification operation, and in the humidification rotor drive state, the humidification operation is performed together with the air purification operation. Specifically, the humidity in the air detected by the humidity detection sensor 9 is compared with the target humidity to determine whether or not the humidification operation is performed, and based on the determination result, the humidification operation is operated or stopped. . Therefore, when the humidity in the air detected by the humidity detection sensor 9 is smaller than the target humidity, the humidification operation is performed. When the humidity in the air detected by the humidity detection sensor 9 is equal to or higher than the target humidity, the humidification operation is performed. Stopped. On the other hand, the continuous operation mode is a mode in which the fan 5 is driven and the humidification rotor driving state in which the humidification rotor 31 is rotationally driven is continued during the continuous operation mode.

The ECO power saving switch 74 is a switch for selecting whether or not to execute an energy saving operation. When the humidifying operation is being performed, if the ECO power saving switch 74 is pressed, the mode changes to the energy saving operation mode, and a lamp indicating that the energy saving operation mode is set to light. On the other hand, when the ECO power saving switch 74 is pressed in the energy saving operation mode, the energy saving operation mode is stopped,
The lamp returns to the state before switching to the energy saving operation mode, and the lamp is turned off. In the energy saving operation mode, the rotational speed of the fan 5 is limited to a rotational speed corresponding to weak.

As the energy-saving operation mode, there are two operation modes, that is, a beam operation mode (intermittent operation mode) and a normal operation mode. The Mihari operation mode is an operation in which the fan intermittent operation in which the operation and stop of the fan 5 are alternately repeated is performed and the rotation driving of the humidification rotor 31 is stopped. The normal operation mode is an operation in which the fan 5 is driven and the humidification rotor 31 is driven. That is, in the normal operation mode, the humidification operation is performed together with the emptying operation.

In the present embodiment, intermittent fan operation in the watch operation mode means that the fan 5 stops for a predetermined time T1 (for example, 5 minutes) and stops for a predetermined time T2 (for example, for example) until the watch operation mode is canceled. The operation that repeats the driving of 2 minutes). In the following, a state in which the fan 5 is driven during the intermittent fan operation is referred to as a fan ON state, and a state in which the fan 5 is stopped is referred to as a fan OFF state.

In the energy saving operation mode, the Mihari operation mode and the normal operation mode are automatically switched. Specifically, in the normal operation mode, when all the following conditions (i) to (iii) are satisfied, the normal operation mode is switched to the watch operation mode.
(I) The “air pollution degree” is in a “clean” state. The “air dirt degree” in the “clean” state is that the amount of dust in the air detected by the dust detection sensor 6 is less than a predetermined amount. Say that.
(Ii) The humidity in the air detected by the humidity detection sensor 9 is within a predetermined range (for example, 50% or more) (iii) After satisfying (i) and (ii), the state is Continue for a predetermined time T3 (for example, 10 minutes)

On the other hand, in the Mihari operation mode, when either of the following conditions (iv) and (v) is satisfied, the Mihari operation mode is switched to the normal operation mode (the Mihari operation mode is canceled).
(Iv) The “air pollution degree” is no longer in the “clean” state (v) The humidity in the air detected by the humidity detection sensor 9 is outside the predetermined range. When either of the conditions (iv) and (v) is satisfied when the fan 5 is stopped during intermittent fan operation, the fan start condition is set before the fan OFF state continues for a predetermined time T1. Assuming that the condition has been satisfied, the fan starts operating and switches from the Mihari operation mode to the normal operation mode (releases the Mihari operation mode).

Note that when the normal operation mode is switched to the beam operation mode, the fan intermittent operation is started, the rotational driving of the humidification rotor 31 is stopped, and the humidification operation is stopped. That is, the control unit 90 controls the fan motor 5a of the fan 5 and stops the drive motor 43 of the humidification rotor 31 so that the drive and stop of the fan 5 are alternately repeated. When intermittent fan operation is started, the fan is first turned off, and then the fan is turned on and the fan OF.
The F state is repeated alternately.

In the present embodiment, when the ECO power saving switch 74 is pressed, the normal operation mode is first entered.

The air volume change switch 75 is a switch for setting the air volume. The air volume setting includes a manual setting in which the user can select an air volume by operating the air volume changing switch 75 and an automatic setting in which the air volume is automatically set. In manual setting, the user can choose between turbo, strong, normal, weak, and low.
The stage can be selected. When the air volume is set to automatic, the air volume is automatically changed based on the dust volume detected by the dust detection sensor 6 and the odor intensity detected by the odor detection sensor 7. Therefore, when the amount of dust detected by the dust detection sensor 6 and the odor intensity detected by the odor detection sensor 7 are large, the air volume is greatly changed, and the amount of dust detected by the dust detection sensor 6 and the odor detection sensor are detected. When the odor intensity detected at 7 is small, the air volume is changed to be small. In the present embodiment, when the ECO power saving switch 74 is pressed to switch to the energy saving operation mode, the air volume is limited to a low or lower air volume.

<Display unit 80>
The display unit 80 displays the amount of dust detected by the dust detection sensor 6, the odor intensity detected by the odor detection sensor 7, the temperature detected by the temperature detection sensor 8, and the humidity detected by the humidity detection sensor 9. As shown in FIG. 1, the display unit 80 is provided on the front panel 1b. The amount of dust is displayed, for example, in three colors depending on the size. The odor intensity is displayed, for example, by lighting in three colors according to the strength.
The temperature is displayed in increments of 1 ° C., for example, and the humidity is displayed in increments of 1%, for example. In addition, during the Mihari operation mode, humidity is not displayed in order to prevent the erroneously detected humidity from being displayed.

<Control unit 90>
The control unit 90 (control means) includes a CPU (Central Processing Unit) and a ROM (Read Only).
It is composed of a plurality of hardware such as a memory (RAM) and a random access memory (RAM). The ROM stores a control program for controlling the operation of the control unit 90 and the like.
And this control part 90 has the timer part 91, the electric dust collector 3, the streamer discharge unit 4, the fan motor 5a of the fan 5, the dust detection sensor 6, the odor detection sensor 7, the temperature detection sensor 8, and humidity detection The sensor 9, the drive motor 43 of the humidification rotor 31, the operation unit 70, the display unit 80, and the like are electrically connected.

The timer unit 91 determines whether or not the state in which the “air contamination degree” is “clean” and the humidity in the air is within a predetermined range (for example, 50% or more) continues for a predetermined time T3. A timer for measuring the time for determination is driven and controlled.

<Flow>
Next, the operation (flow) of the air conditioner 1 according to the present embodiment will be described with reference to FIG.

First, it is determined whether or not the ECO power saving switch 74 has been pressed (S1). At the start, the energy saving operation mode is entered and the normal operation mode is assumed. And
When the ECO power saving switch 74 is pressed and the energy saving operation mode is in effect (S1: Yes), the fan rotation speed is limited to a weak value or less (S2). On the other hand, when the ECO power saving switch 74 is not pressed (S1: No), step S1 is repeated.

  Thereafter, it is determined whether or not the “air contamination degree” is “clean” and the humidity in the air is within a predetermined range (whether the above conditions (i) and (ii) are satisfied). (S3). When the “air pollution degree” is in a “clean” state and the humidity in the air is within a predetermined range (S3: Yes), whether or not the state continues for a predetermined time T3 (for example, 10 minutes) (Whether or not the condition (iii) is satisfied) is determined (S4). When the “air pollution degree” is “clean” and the humidity in the air is within a predetermined range for a predetermined time T3 (S4: Yes), the normal operation mode is switched to the watch operation mode. The fan stops (S5). On the other hand, when the “air pollution level” is “clean” in step S3 and the humidity in the air is not within the predetermined range (S3: No), or in step S4, the predetermined time T3 (for example, 10 minutes) ) If not continued (S4: No), repeat step S3.

  In step S5, after switching to the watch operation mode (after the fan has stopped), it is determined whether or not a predetermined time T4 (for example, 30 seconds) has elapsed (S6). When the predetermined time T4 has elapsed (S6: Yes), it is determined whether or not the fan start condition is satisfied (whether any of the above conditions (iv) and (v) is satisfied) (S7). If the predetermined time T4 has not elapsed (S6: No), step S6 is repeated. When the fan start condition is satisfied (S7: Yes), the process proceeds to step S3 in the normal operation mode.

 On the other hand, if the fan start condition is not satisfied in step S7 (S7: No), when the predetermined time T1 has passed (S8), the operation of the fan 5 is started in the watch operation mode (S9). The air volume of the fan 5 is an air volume corresponding to the air flow. Then, after the operation of the fan 5 is started, when the predetermined time T2 has elapsed (S10), the process proceeds to step S5 (if the fan ON state continues for the predetermined time T2, the fan 5 is stopped and the fan OFF state is entered. Switch).

<Characteristics of the air conditioner 1 of the present embodiment>
In the air conditioner 1 of the present embodiment, the predetermined time T from the time of fan stop in the intermittent operation mode.
Since the operation of the fan 5 is not started until 4 elapses regardless of whether the fan operation start condition is satisfied or not, the fan 5 is operated for a predetermined time T4 after the intermittent operation mode of the fan 5 is started. Is done. Therefore, immediately after the intermittent operation mode of the fan 5 is started, the intermittent operation mode is canceled and the operation of the fan 5 can be prevented from being started.

Moreover, in the air conditioner 1 of this embodiment, when the air pollution degree is small, when the air pollution degree increases after starting the intermittent operation mode in which the fan 5 is intermittently operated when the air pollution degree is small, the intermittent operation mode is changed. The operation of the fan 5 can be started after being released.

  Moreover, in the air conditioner 1 of this embodiment, when the humidity is within a predetermined range, the intermittent operation mode is set when the humidity decreases after the intermittent operation mode in which the fan 5 is operated intermittently is started. It can cancel | release and the driving | operation of the fan 5 can be started.

As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

In the present embodiment, (i) the “air pollution degree” is in a “clean” state, (ii)
When all the conditions of the humidity in the air being within a predetermined range and satisfying (iii) (i) and (ii) that the state has continued for a predetermined time T3 are satisfied. Although the case where the Mihari operation mode is started has been described, (i) the Mihari operation mode is started when the condition including that the “air pollution degree” is in the “clean” state is satisfied. Good,
(I) When the air pollution level is "clean", (ii) when the conditions including the humidity in the air are within the specified range, the Mihari operation mode is started. It may be a thing.

In the present embodiment, when the fan 5 is stopped in the operation mode,
(Iv) When the air pollution level is no longer “clean” and (v) the humidity in the air is outside the specified range, the fan Although the case has been described in which the Mihari operation mode is canceled assuming that the start condition is satisfied, the fan start condition may be changed to another condition.

In the present embodiment, the Mihari operation mode is the operation mode in which the fan intermittent operation in which the operation and stop of the fan 5 are alternately repeated is performed and the rotation driving of the humidification rotor 31 is stopped. Any operation mode in which intermittent fan operation in which the operation and stop of the fan 5 are alternately repeated may be performed.

Moreover, in this embodiment, although the air conditioner which performs an air purification driving | operation and a humidification driving | operation was demonstrated,
It may be an air conditioner that performs only an air purification operation or an air conditioner that performs only a humidification operation.

Further, in this embodiment, when the amount of dust in the air detected by the dust detection sensor 6 is less than a predetermined amount, the “air contamination degree” is set to “clean”, but the dust detection sensor 6 detects When the amount of dust in the air is less than a predetermined amount and the odor contamination in the air detected by the odor detection sensor 7 is less than a predetermined value, Good.

By using the present invention, it is possible to prevent the intermittent operation mode from being released immediately after the intermittent operation mode of the fan is started.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Casing 5 Fan 6 Dust detection sensor (air dirt detection means)
9 Humidity detection sensor (humidity detection means)
10 Inlet 14 Outlet 90 Control part (control means)

Claims (2)

A fan disposed in a casing having an inlet and an outlet;
An air dirt detecting means arranged in the casing for detecting air dirt;
Control means for controlling the fan,
When the air contamination level detected by the air contamination detection means is small, the fan has an intermittent operation mode in which the fan is intermittently operated so that the fan stop state and the fan drive state are alternately repeated ,
The release condition for releasing the intermittent operation mode includes a condition that the degree of air pollution detected by the air dirt detection means is a predetermined amount or more,
The control means cancels the intermittent operation mode when the release condition is satisfied when the fan is stopped in the intermittent operation mode, and starts the operation of the fan,
In the intermittent operation mode,
The detection of whether the release condition is satisfied is not performed until the predetermined time has elapsed from the start of the fan stop state, and
The air conditioner is characterized in that detection of whether the release condition is satisfied is performed during a period from a start of the fan stop state until a fan stop state ends after a predetermined time elapses. . Humidity detection means to detect humidity,
The intermittent operation mode is started when the humidity detected by the humidity detecting means is within a predetermined range,
2. The air conditioner according to claim 1, wherein the release condition includes a condition that the humidity detected by the humidity detector is outside a predetermined range.

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