WO2022044531A1

WO2022044531A1 - Indoor air conditioning system

Info

Publication number: WO2022044531A1
Application number: PCT/JP2021/024530
Authority: WO
Inventors: 康史鵜飼; 裕伊藤; 太郎黒田
Original assignee: ダイキン工業株式会社
Priority date: 2020-08-26
Filing date: 2021-06-29
Publication date: 2022-03-03
Also published as: JP6963199B1; JP2022038322A; CN115885134B; CN115885134A

Abstract

The present disclosure addresses the problem of preventing decrease in humidity during cleaning operation of an indoor heat exchanger. In an indoor air conditioning system (1), when manipulation for decreasing the humidification capability of a humidifier (6, 106, 206) has been performed, a control unit (8) performs control so as to restore the capability of the humidifier (6, 106) or performs notification for urging restoration of the humidification capability of the humidifier (106, 206) by controlling a loudspeaker (82) or a display screen (15a) of a remote controller (15). As a result, even when a user has stopped the humidifier (6, 106, 206), it is possible to ensure humidity required for cleaning operation by restarting the humidifier (106, 206) or performing notification for urging restart of the humidifier (6, 106).

Description

Indoor air conditioning system

Regarding the indoor air conditioning system that performs the cleaning operation to clean the indoor heat exchanger

In recent years, air conditioners that can automatically clean the indoor heat exchangers of indoor units have been introduced to the market. For example, in the air conditioner described in Patent Document 1 (Japanese Unexamined Patent Publication No. 2010-014288), a defrosting operation is performed in which at least a part of the fins of the indoor heat exchanger is defrosted, and then defrosting is performed by the defrosting operation. It is equipped with a means for generating water to remove dirt adhering to the fin surface.

The present disclosure provides an air conditioner capable of ensuring the humidity required for cleaning the heat exchanger.

The indoor air conditioning system of the first aspect includes an air conditioning indoor unit, a humidifier, a control unit, and a notification unit. The air-conditioning indoor unit performs a cleaning operation for cleaning the indoor heat exchanger. In the cleaning operation, the indoor heat exchanger functions as an evaporator, and the moisture contained in the indoor air is condensed in the indoor heat exchanger to clean the indoor heat exchanger. The humidifier humidifies the room. The control unit controls to restore the humidifying capacity of the humidifier when an operation is performed to reduce the humidifying capacity of the humidifier, or controls the notification unit to promote the restoration of the humidifying capacity of the humidifier. Notify.

In this indoor air-conditioning system, when the indoor heat exchanger is being washed while the humidifier is operating, even if the user stops the humidifier, the humidifier is restarted or a notification prompting the restart is given. Thereby, the humidity required for the washing operation can be secured.

The cleaning operation includes an operation of performing a freezing operation in which the surface temperature of the indoor heat exchanger is kept below the freezing point, and thawing after the freezing operation is completed to clean the indoor heat exchanger.

The indoor air-conditioning system of the second viewpoint is the indoor air-conditioning system of the first viewpoint, and the control unit has a remote control function for remotely controlling the humidifier. The control unit controls to restore the humidifying capacity of the humidifier by remote control when the humidifying capacity of the humidifier is reduced.

In this indoor air conditioning system, the humidity drop is avoided by restarting the humidifier.

The indoor air-conditioning system of the third viewpoint is the indoor air-conditioning system of the first viewpoint, and further includes a humidity sensor. Based on the detection value of the humidity sensor, the control unit determines whether or not an operation has been performed that reduces the humidifying capacity of the humidifier. When it is determined that the humidifying capacity of the humidifier is reduced, the control unit controls the notification unit to notify the humidifier to restore the humidifying capacity of the humidifier.

This indoor air conditioning system will prevent the humidity from dropping by encouraging the restart of the humidifier.

The indoor air conditioning system of the fourth aspect includes an air conditioning indoor unit, a humidifier, and a control unit. The air-conditioning indoor unit performs a cleaning operation for cleaning the indoor heat exchanger. In the cleaning operation, the indoor heat exchanger functions as an evaporator, and the moisture contained in the indoor air is condensed in the indoor heat exchanger to clean the indoor heat exchanger. The humidifier humidifies the room. The control unit takes measures to suppress the decrease in capacity during the cleaning operation. The capacity reduction suppressing measure makes it less likely that the humidifying capacity of the humidifier is reduced as compared with the case where the washing operation is not performed.

In this indoor air-conditioning system, it is possible to suppress the decrease in humidity due to the decrease in the capacity of the humidifier by taking measures to suppress the decrease in capacity.

The indoor air-conditioning system of the fifth viewpoint is the indoor air-conditioning system of the fourth viewpoint, and the control unit notifies that the washing operation and the operation of the humidifier are linked as a measure for suppressing the decrease in capacity.

This indoor air conditioning system prevents the user from stopping the humidifier by notifying that the washing operation and the humidifier are linked.

The indoor air-conditioning system of the sixth viewpoint is the indoor air-conditioning system of the fourth viewpoint, and the control unit has a remote control function for remotely controlling the humidifier. The humidifier has an operation restriction function that cancels an input other than a predetermined operation. The control unit enables the operation restriction function of the humidifier by remote control as a measure to suppress the decrease in capacity.

In this indoor air conditioning system, by activating the operation restriction function, operations that reduce the humidifying capacity, such as stopping the humidifier, are prevented and humidity reduction is avoided.

The indoor air-conditioning system of the seventh viewpoint is the indoor air-conditioning system of the sixth viewpoint, and the humidifier has a plurality of operation buttons. The predetermined operation is an operation of pressing a predetermined operation button among a plurality of operation buttons longer than usual, or an operation of pressing the predetermined operation button twice or more.

In this indoor air-conditioning system, by preventing the capacity of the humidifier from being reduced by normal operation, the humidity is reduced due to the reduction in the capacity of the humidifier while the indoor heat exchanger is being washed while the humidifier is operating. Can be prevented.

The indoor air-conditioning system of the eighth viewpoint is any one of the indoor air-conditioning systems of the first to seventh viewpoints, and when the control unit detects or estimates the stop of the humidifier, the washing operation is stopped.

In this indoor air conditioning system, the cleaning operation cannot be expected to be effective when the humidity is low, so the cleaning operation is stopped.

The indoor air-conditioning system according to the ninth aspect is an indoor air-conditioning system according to any one of the first to eighth aspects, and the control unit stops the washing operation by stopping the humidifier, a communication terminal or a remote control device. Notify via.

It is a conceptual diagram which shows an example of the structure of the room air-conditioning system which concerns on 1st Embodiment. It is sectional drawing which shows an example of the structure of the indoor unit of an indoor air-conditioning system. It is a figure for demonstrating the refrigerant circuit and the air flow path which the indoor air-conditioning system of FIG. 1 has. It is an exploded perspective view which shows the structural example of the outdoor unit and a humidifier of FIG. It is a block diagram for demonstrating the structure of the room air-conditioning system of FIG. It is a block diagram for demonstrating the structure of a control part. It is a flowchart for demonstrating operation of an indoor air-conditioning system. It is a timing chart for comparing the humidification operation and the washing operation of a normal operation. It is a flowchart which shows the operation example of the control part at the time of automatically shifting to a cleaning operation. It is an operation flowchart of the humidifier control of the air conditioner in a washing operation. It is another operation flowchart of the humidifier control of the air conditioner in a washing operation. It is a conceptual diagram which shows an example of the structure of the room air-conditioning system which concerns on 2nd Embodiment. It is an exploded perspective view which shows the structural example of the air purifier of FIG. It is a perspective view which shows the appearance of the air purifier of FIG. It is a block diagram for demonstrating the structure of the room air-conditioning system of FIG. It is an operation flowchart of the humidifier control of the air conditioner in the washing operation when the humidifier has an operation restriction function. It is another operation flowchart of the humidifier control of the air conditioner in a washing operation. It is a flowchart for demonstrating operation of an indoor air-conditioning system which concerns on 3rd Embodiment.

<First Embodiment>
(1) Outline of Configuration of Indoor Air-Conditioning System 1 FIG. 1 is a conceptual diagram showing an example of the configuration of indoor air-conditioning system 1 according to the first embodiment. In FIG. 1, the indoor air conditioning system 1 includes an air conditioner 10 and a humidifier 6. The air conditioner 10 includes an indoor unit 2 and an outdoor unit 4.

The indoor unit 2 is installed in the room RM and performs air conditioning in the room RM. In the first embodiment, the indoor unit 2 is attached to the wall WL of the room RM. However, the indoor unit 2 is not limited to the type installed on the wall WL of the room RM. The indoor unit 2 may be installed on the ceiling CE or the floor FL, for example.

FIG. 2 is a cross-sectional view showing an example of the configuration of the indoor unit 2 of the indoor air conditioning system 1. In FIG. 2, the indoor unit 2 has an indoor heat exchanger 21. The indoor unit 2 exchanges heat with the indoor air by passing the indoor air (air in the room RM) through the indoor heat exchanger 21.

The indoor heat exchanger 21 has a plurality of heat transfer fins 21a and a plurality of heat transfer tubes 21b. The indoor air passes between the plurality of heat transfer fins 21a. Further, during heat exchange, air passes between the plurality of heat transfer fins 21a, and at the same time, the refrigerant flows through the heat transfer tube 21b. The heat transfer tube 21b is folded a plurality of times and penetrates one heat transfer fin 21a a plurality of times.

FIG. 3 is a diagram for explaining a refrigerant circuit and an air flow path included in the indoor air conditioning system 1 of FIG. 1. In FIGS. 1 and 3, the humidifier 6 supplies moisture to the inside (indoor) of the room RM to perform humidification to raise the humidity in the room.

FIG. 4 is an exploded perspective view showing a configuration example of the outdoor unit 4 and the humidifier 6 of FIG. Further, FIG. 5 is a block diagram for explaining the configuration of the indoor air conditioning system of FIG. 1. In FIGS. 3 to 5A, the indoor air conditioning system 1 includes a control unit 8 that controls the indoor unit 2 and the humidifier 6.

The control unit 8 controls the indoor unit 2 so as to perform a cleaning operation, which is an operation for cleaning the indoor heat exchanger 21. In the cleaning operation, the control unit 8 controls the humidifier 6 so as to raise the humidity in the room, and cleans the surface of the indoor heat exchanger 21 by generating dew condensation water on the surface of the indoor heat exchanger 21. .. The humidifier 6 may be started before the operation of the air conditioner 10 or at the same time as the operation of the air conditioner 10.

It is preferable that the control unit 8 first controls the humidifier 6 so that the humidity in the room reaches a predetermined humidity in the washing operation. In this case, after the room is brought to a predetermined humidity by the humidifier 6, the control unit 8 causes dew condensation water to be generated on the surface of the room heat exchanger 21 to clean the surface. The surface of the indoor heat exchanger 21 referred to here includes heat transfer fins 21a.

The control unit 8 is realized by, for example, a microcomputer. For example, in the cleaning operation, the control unit 8 causes the humidifier 6 to perform a humidifying operation, and then causes the indoor unit 2 to perform a cleaning operation.

When the room is dry due to weather conditions or the like, it becomes difficult to clean the surface of the indoor heat exchanger 21 by causing dew condensation on the surface of the indoor heat exchanger 21 if the room remains dry.

However, even if the room is dry due to weather conditions, the indoor air conditioning system 1 can raise the humidity in the room to a predetermined humidity by humidifying the washing operation.

The indoor air conditioning system 1 can perform a cleaning operation in a state where the humidity in the room has risen to a predetermined humidity.

As described above, the indoor air conditioning system 1 can clean the surface of the indoor heat exchanger 21 by causing sufficient dew condensation without being affected by indoor drying due to weather conditions and the like.

(2) Detailed configuration The air conditioner 10 has an indoor unit 2, an outdoor unit 4, and a remote controller 15. The indoor unit 2 and the outdoor unit 4 are connected by refrigerant connecting

pipes

11 and 12. The indoor unit 2, the outdoor unit 4, and the refrigerant connecting

pipes

11 and 12 form a refrigerant circuit 13.

The indoor unit 2 and the outdoor unit 4 are controlled by the control unit 8. In the refrigerant circuit 13, for example, the steam compression refrigeration cycle is repeated during the cooling operation, the heating operation, and the dehumidifying operation.

(2-1) Indoor unit 2
As shown in FIGS. 2, 3 and 5, the indoor unit 2 includes an indoor heat exchanger 21, an indoor fan 22, a casing 23, an air filter 24, a drain pan 26, and a horizontal flap 27. , A vertical flap (not shown) and a discharge unit 29. Further, the indoor unit 2 includes an indoor temperature sensor 31, an indoor humidity sensor 32, a duct temperature sensor 33, a duct humidity sensor 34, and an indoor heat exchanger temperature sensor 35.

When explaining the direction, the expressions "up", "down", "front", and "rear" are used according to the directions indicated by the arrows in FIGS. 1 and 2.

(2-1-1) Casing 23
The casing 23 has a suction port 23a at the upper portion and an outlet 23b at the lower portion. The indoor unit 2 drives the indoor fan 22 to suck in the indoor air from the suction port 23a and blow out the air that has passed through the indoor heat exchanger 21 from the air outlet 23b.

(2-1-2) Indoor fan 22
As shown in FIG. 2, the indoor fan 22 is arranged at a substantially central portion in the casing 23. The indoor fan 22 is, for example, a cross flow fan. The indoor heat exchanger 21 is arranged upstream of the indoor fan 22 in the air flow path from the suction port 23a to the air outlet 23b.

(2-1-3) Indoor heat exchanger 21
The indoor heat exchanger 21 has a shape that opens downward so as to cover the upper part of the indoor fan 22 when viewed in the extending direction of the heat transfer tube 21b. Here, such a shape is referred to as a substantially Λ shape. The indoor heat exchanger 21 has a first heat exchange unit 21F far from the wall WL and a second heat exchange unit 21R close to the wall WL.

The drain pan 26 is arranged under the front lower part and the rear lower part of the indoor heat exchanger 21 having a substantially Λ shape. The dew condensation generated in the first heat exchange section 21F of the indoor heat exchanger 21 is received by the drain pan 26 arranged in the lower front part of the indoor heat exchanger 21. The dew condensation generated in the second heat exchange unit 21R of the indoor heat exchanger 21 is received by the drain pan 26 arranged in the lower rear part of the indoor heat exchanger 21.

(2-1-4) Horizontal flap 27
A horizontal flap 27 and a vertical flap are arranged at the outlet 23b. The horizontal flap 27 changes the wind direction of the air blown from the outlet 23b up and down. Therefore, the horizontal flap 27 is configured so that the angle formed with the horizontal direction can be changed by the motor 27m.

The vertical flap is configured so that the wind direction of the air blown from the outlet 23b can be changed to the left or right. The indoor air conditioning system 1 drives, for example, a vertical flap by a motor (not shown) so as to change the angle formed by the front-rear direction.

(2-1-5) Air filter 24
An air filter 24 is arranged downstream of the suction port 23a in the casing 23 and upstream of the indoor heat exchanger 21. The air filter 24 is installed in the casing 23 so that substantially all the indoor air supplied to the indoor heat exchanger 21 passes through the air filter 24.

Therefore, dust larger than the mesh of the air filter 24 is removed by the air filter 24 and does not reach the indoor heat exchanger 21. However, dust and oil mist finer than the mesh of the air filter 24 and the like that pass through the air filter 24 reach the indoor heat exchanger 21.

(2-1-6) Discharge unit 29
The discharge unit 29 is an active species generating device configured to have a discharge unit inside. The discharge unit includes, for example, a needle-shaped electrode and a counter electrode, and a streamer discharge, which is a type of plasma discharge, is generated by applying a high voltage. Active species with high oxidative decomposition power are produced when a discharge occurs. These active species include, for example, fast electrons, ions, hydroxide radicals and excited oxygen molecules. The active species decomposes harmful components and odorous components in the air composed of small organic molecules such as ammonia, aldehydes and nitrogen oxides. The discharge unit 29 is arranged, for example, upstream of the air filter 24 or upstream of the indoor heat exchanger 21.

(2-1-7) Indoor control unit 81
In the indoor unit 2, an indoor control unit 81 constituting the control unit 8 is arranged. As shown in FIG. 5, the indoor control unit 81 is connected to the motor 22 m of the indoor fan 22, the motor 27 m of the horizontal flap 27, and the reheat dehumidifying valve 28.

The indoor control unit 81 can control the rotation speed of the motor 22m of the indoor fan 22, the rotation angle of the motor 27m of the horizontal flap 27, and the on / off of the reheat dehumidifying valve 28.

FIG. 6 is a block diagram for explaining the configuration of the control unit 8. In FIG. 6, the room control unit 81 includes a processor 81a and a memory 81b.

The processor 81a reads the control program for each operation stored in the memory 81b, and outputs a command required for each device.

The memory 81b stores the instruction value from the outdoor control unit 86 at any time in addition to the control program for each operation.

Further, the processor 81a reads the data or the requested value stored in the memory 81b and calculates the necessary control value. Further, the processor 81a has a timer 83 inside.

A CPU or GPU is adopted as the processor 81a. The above description is an example and is not limited to the above description.

The indoor control unit 81 is connected to the motor 22 m of the indoor fan 22 shown in FIG. 5, the motor 27 m of the horizontal flap 27, the reheat dehumidifying valve 28, and the speaker 82. The indoor control unit 81 is also connected to the outdoor control unit 86 arranged in the outdoor unit 4.

The indoor control unit 81 receives a signal from the remote controller 15 and receives an instruction input from the remote controller 15. The remote controller 15 has a display screen 15a.

The indoor control unit 81 can display various information on the display screen 15a of the remote controller 15. The indoor control unit 81 can use, for example, the display screen 15a to notify that the cleaning operation cannot be performed.

Further, the indoor control unit 81 can also notify via the speaker 82 that the cleaning operation cannot be performed.

3 and 5 show the indoor temperature sensor 31, the indoor humidity sensor 32, the duct temperature sensor 33, the duct humidity sensor 34, and the indoor heat exchanger temperature sensor 35 among the sensors included in the indoor unit 2. It is shown. These sensors are connected to the indoor control unit 81.

The indoor control unit 81 detects the temperature of the indoor air by the indoor temperature sensor 31, and detects the relative humidity of the indoor air by the indoor humidity sensor 32.

The indoor control unit 81 detects the temperature of the air blown from the humidifier 6 to the indoor unit 2 by the duct temperature sensor 33, and the relative air blown from the humidifier 6 to the indoor unit 2 by the duct humidity sensor 34. Detect humidity.

Further, the indoor control unit 81 can detect the temperature of the refrigerant flowing in a specific place of the indoor heat exchanger 21 by the indoor heat exchanger temperature sensor 35. This specific location is, for example, the location of the heat transfer tube 21b to which the indoor heat exchanger temperature sensor 35 is attached.

(2-1-8) Reheat dehumidifying valve 28
As shown in FIG. 3, the indoor heat exchanger 21 has a reheat dehumidifying valve 28. The first heat exchange unit 21F and the second heat exchange unit 21R are connected via a reheat dehumidifying valve 28.

The reheat dehumidifying valve 28 is fully opened during cooling operation, heating operation, and weak cooling / dehumidifying operation to allow the refrigerant to flow without depressurization, and to depressurize the refrigerant during reheat dehumidification.

There are two types of valve mechanisms: a case where a decompression means is provided inside the valve body and a case where a decompression means such as a capillary tube is arranged in parallel with the valve.

(2-2) Outdoor unit 4
The outdoor unit 4 functions as a heat source unit that supplies heat energy to the indoor unit 2. As shown in FIGS. 3 and 5, the outdoor unit 4 includes a compressor 41, a four-way valve 42, an accumulator 43, an outdoor heat exchanger 44, an outdoor expansion valve 45, an outdoor fan 46, and a casing 47.

The compressor 41, the four-way valve 42, the accumulator 43, the outdoor heat exchanger 44, the outdoor expansion valve 45, and the outdoor fan 46 are housed in the casing 47.

(2-2-1) Casing 47
The casing 47 has a suction port 47a (see FIG. 3) for sucking in outdoor air and an outlet 47b (see FIGS. 1 and 3) for blowing out the air after heat exchange. The suction port 47a is arranged on the rear side of the casing 47.

(2-2-2) Compressor 41
The compressor 41 sucks in the gas refrigerant, compresses it, and discharges it. The compressor 41 is, for example, a variable displacement compressor whose operating capacity can be changed by adjusting the operating frequency of the motor 41 m with an inverter. The larger the operating frequency, the larger the operating capacity of the compressor 41.

(2-2-3) Four-way valve 42
The four-way valve 42 switches the direction of the flow of the refrigerant in the refrigerant circuit 13. The four-way valve 42 has four ports. The first port P1 of the four-way valve 42 is connected to the discharge port of the compressor 41. The second port P2 of the four-way valve 42 is connected to the first inlet / outlet 44x of the outdoor heat exchanger 44. The third port P3 of the four-way valve 42 is connected to the accumulator 43. The fourth port P4 of the four-way valve 42 is connected to the second inlet / outlet 21y of the indoor heat exchanger 21.

(2-2-4) Accumulator 43
The accumulator 43 is connected between the third port P3 of the four-way valve 42 and the suction port of the compressor 41. In the accumulator 43, gas-liquid separation of the refrigerant sucked into the compressor 41 is performed.

(2-2-5) Outdoor heat exchanger 44
The outdoor heat exchanger 44 connects the second inlet / outlet 44y to the first inlet / outlet 45x of the outdoor expansion valve 45. The outdoor heat exchanger 44 exchanges heat between the refrigerant flowing into the inside from the first inlet / outlet 44x or the second inlet / outlet 44y and the outdoor air.

(2-2-6) Outdoor expansion valve 45
The outdoor expansion valve 45 connects the second inlet / outlet 45y to the first inlet / outlet 21x of the indoor heat exchanger 21.

(2-2-7) Outdoor control unit 86
In the outdoor unit 4, an outdoor control unit 86 constituting the control unit 8 is arranged. As shown in FIG. 6, the outdoor control unit 86 includes a control device 86a, a storage device 86b, and an arithmetic unit 86c.

The control device 86a reads the control program stored in the storage device 86b and outputs a command required for each device.

The storage device 86b stores the requested value from the indoor control unit 81 at any time in addition to each control program.

The arithmetic unit 86c reads the data or the required value stored in the storage device 86b according to the command of the control device 86a, and calculates the necessary control value.

A processor such as a CPU or GPU is adopted as the control device 86a and the arithmetic unit 86c. The above description is an example and is not limited to the above description.

The outdoor control unit 86 is connected to the indoor control unit 81. Further, the outdoor control unit 86 is connected to the motor 41 m of the compressor 41, the four-way valve 42, and the motor 46 m of the outdoor fan 46.

The outdoor control unit 86 can control the operating frequency of the motor 41 m of the compressor 41, the opening degree of the four-way valve 42, and the rotation speed of the motor 46 m of the outdoor fan 46.

3 and 5 show an outside air temperature sensor 51, a discharge pipe temperature sensor 52, and an outdoor heat exchanger temperature sensor 53 among the sensors included in the outdoor unit 4. These sensors are connected to the outdoor control unit 86.

The outdoor control unit 86 can detect the temperature of the outdoor air by the outside air temperature sensor 51. Further, the control unit 8 can detect the temperature of the refrigerant flowing through the discharge pipe (the refrigerant pipe connected to the discharge port of the compressor 41) by the discharge pipe temperature sensor 52, and the outdoor heat exchanger 53 by the outdoor heat exchanger 53. The temperature of the refrigerant flowing in 44 specific places can be detected.

When controlling the refrigeration cycle, the outdoor control unit 86 monitors the state of the refrigerant in the refrigerant circuit 13 by means of a discharge pipe temperature sensor 52, an outdoor heat exchanger temperature sensor 53, an indoor heat exchanger temperature sensor 35, and the like.

The refrigerant circuit 13 includes a compressor 41, a four-way valve 42, an accumulator 43, an outdoor heat exchanger 44, an outdoor expansion valve 45, and an indoor heat exchanger 21. Refrigerant circulates in the refrigerant circuit 13. Examples of the refrigerant include fluorocarbons such as R32 refrigerant and R410 refrigerant, carbon dioxide and the like.

In the steam compression refrigeration cycle, the refrigerant is compressed by the compressor 41 to raise the temperature, and then the refrigerant dissipates heat in the outdoor heat exchanger 44 or the indoor heat exchanger 21. Further, in the steam compression type refrigeration cycle, the refrigerant is decompressed and expanded by the outdoor expansion valve 45, and then the refrigerant is endothermic by the indoor heat exchanger 21 or the outdoor heat exchanger 44.

(2-3) Humidifier 6
The humidifier 6 is integrated with the outdoor unit 4. The humidifier 6 takes in moisture from the outdoor air. The humidifier 6 generates high-humidity air by applying the taken-in moisture to the outdoor air. The humidifier 6 sends this high humidity air to the indoor unit 2.

At the time of humidification, the indoor air conditioning system 1 mixes the high humidity air sent from the humidifier 6 with the indoor air in the indoor unit 2. The indoor unit 2 humidifies the room by blowing out air mixed with high humidity air into the room RM (indoor). The humidifier 6 is controlled by the control unit 8.

As shown in FIG. 4, the humidifier 6 includes a suction rotor 61, a heater 62, a switching damper 63, an intake / exhaust fan 64, a suction fan 65, a duct 66, and a casing 69. There is. Further, the humidifier 6 includes an intake / exhaust hose 68.

As shown in FIGS. 1 and 4, the casing 69 of the humidifier 6 is attached to and integrated with the casing 47 of the outdoor unit 4. The casing 69 has an adsorption air outlet 69a, an adsorption air intake 69b, and a humidifying air intake 69c.

(2-3-1) Suction rotor 61
The suction rotor 61 is, for example, a disk-shaped ceramic rotor having a honeycomb structure. The ceramic rotor can be formed, for example, by firing an adsorbent. The adsorbent has the property of adsorbing the moisture in the air that comes into contact with it.

Further, the adsorbent has the property of desorbing the adsorbed water by being heated. Such adsorbents include, for example, zeolite, silica gel and alumina. The suction rotor 61 is driven by the motor 61m and rotates. The rotation speed of the suction rotor 61 can be changed by changing the rotation speed of the motor 61m.

(2-3-2) Heater 62
The heater 62 is arranged between the humidifying air intake port 69c and the switching damper 63. The outdoor air taken in from the humidifying air intake port 69c passes through the heater 62, then further passes through the suction rotor 61, and reaches the switching damper 63.

When the air heated by the heater 62 passes through the adsorption rotor 61, the moisture is desorbed from the adsorption rotor 61, and the moisture is supplied to the heated air from the adsorption rotor 61. The heater 62 can change the output, and the temperature of the air passing through the heater 62 can be changed according to the output.

Within a specific temperature range, the suction rotor 61 tends to desorb a large amount of water as the temperature of the air passing through the suction rotor 61 increases.

(2-3-3) Switching damper 63
The switching damper 63 has a first entrance / exit 63a and a second entrance / exit 63b. The switching damper 63 can switch whether the inlet of the air sucking in the air when the intake / exhaust fan 64 is driven is the first inlet / outlet 63a or the second inlet / outlet 63b.

When the air inlet is the first inlet / outlet 63a, the outdoor air flows from the humidifying air intake port 69c in the direction of the arrow shown by the solid line in FIG. 3, the suction rotor 61, the heater 62, and the suction rotor 61. , The first inlet / outlet 63a, the intake / exhaust fan 64, the second inlet / outlet 63b, the duct 66, the intake / exhaust hose 68, and the indoor unit 2 flow in this order.

When the air inlet is switched to the second inlet / outlet 63b, conversely, in the direction of the arrow shown by the broken line in FIG. 3, the intake / exhaust hose 68, the duct 66, the second inlet / outlet 63b, and the intake / exhaust are taken from the indoor unit 2. Air flows in the order of the exhaust fan 64, the first inlet / outlet 63a, the suction rotor 61, the heater 62, the suction rotor 61, and the humidifying air intake port 69c. The switching of the switching damper 63 is performed by the motor 63m.

(2-3-4) Intake / exhaust fan 64
The intake / exhaust fan 64 is arranged between the first entrance / exit 63a and the second entrance / exit 63b of the switching damper 63. The intake / exhaust fan 64 generates an air flow from the first inlet / outlet 63a to the second inlet / outlet 63b or from the second inlet / outlet 63b to the first inlet / outlet 63a. The intake / exhaust fan 64 is driven by a motor 64 m.

(2-3-5) Suction fan 65
The suction fan 65 is arranged in a passage leading from the suction air intake port 69b to the suction air outlet 69a. A suction rotor 61 is arranged in this passage so that the suction rotor 61 can be hooked.

When the suction fan 65 generates an air flow from the suction air intake 69b toward the suction air outlet 69a, moisture is adsorbed from the outdoor air passing through the suction rotor 61 to the suction rotor 61. The suction fan 65 is driven by a motor 65 m.

The motor 61m of the suction rotor 61, the motor 63m of the switching damper 63, the motor 64m of the intake / exhaust fan 64, and the heater 62 are connected to the outdoor control unit 86.

The outdoor control unit 86 can control the rotation speed of the suction rotor 61, the switching of the switching damper 63, the on / off of the intake / exhaust fan 64 and the suction fan 65, and the output of the heater 62.

(2-3-6) Intake / exhaust hose 68
One end of the intake / exhaust hose 68 is connected to the duct 66, and the other end is connected to the indoor unit 2. With such a configuration, the intake / exhaust hose 68 and the room RM communicate with each other via the indoor unit 2.

(2-3-7) Outside air humidity sensor 71
3 and 5 show an outside air humidity sensor 71 among the sensors included in the indoor unit 2. The outside air humidity sensor 71 is connected to the outdoor control unit 86. The outdoor control unit 86 can detect the relative humidity of the outdoor air by the outside air humidity sensor 71.

(3) Operation of the indoor air conditioning system 1 (3-1) Normal operation The normal operation of the indoor air conditioning system 1 includes, for example, cooling operation, heating operation, dehumidifying operation, humidifying operation, ventilation operation, ventilation operation, and air cleaning operation. be. Here, the normal operation is an operation other than the washing operation. The normal operation is not limited to the above-mentioned cooling operation and heating operation. Further, in the above-mentioned normal operation, a plurality of operations may be combined, such as a combination of a heating operation and a humidifying operation.

(3-1-1) Cooling operation Before the start of the cooling operation, the control unit 8 is instructed by, for example, the remote controller 15 to perform the cooling operation and the target temperature. During the cooling operation, the control unit 8 switches the four-way valve 42 to the state shown by the solid line in FIG.

During the cooling operation, the four-way valve 42 causes the refrigerant to flow between the first port P1 and the second port P2, and the refrigerant to flow between the third port P3 and the fourth port P4. The four-way valve 42 during the cooling operation causes the high-temperature and high-pressure gas refrigerant discharged from the compressor 41 to flow through the outdoor heat exchanger 44.

In the outdoor heat exchanger 44, heat is exchanged between the refrigerant and the outdoor air supplied by the outdoor fan 46. The refrigerant cooled by the outdoor heat exchanger 44 is decompressed by the outdoor expansion valve 45 and flows into the indoor heat exchanger 21.

In the indoor heat exchanger 21, heat exchange is performed between the refrigerant and the indoor air supplied by the indoor fan 22. The refrigerant warmed by the heat exchange in the indoor heat exchanger 21 is sucked into the compressor 41 via the four-way valve 42 and the accumulator 43.

The indoor air cooled by the indoor heat exchanger 21 is blown out from the indoor unit 2 to the room RM to cool the room.

In this air conditioner 10, in the cooling operation, the indoor heat exchanger 21 functions as a refrigerant evaporator to warm the indoor air in the room RM, and the outdoor heat exchanger 44 functions as a refrigerant radiator.

(3-1-2) Heating operation Before the start of the heating operation, the control unit 8 is instructed by, for example, the remote controller 15 to perform the heating operation and the target temperature. During the heating operation, the control unit 8 switches the four-way valve 42 to the state shown by the broken line in FIG.

During the heating operation, the four-way valve 42 causes the refrigerant to flow between the first port P1 and the fourth port P4, and the refrigerant to flow between the second port P2 and the third port P3. The four-way valve 42 during the heating operation causes the high-temperature and high-pressure gas refrigerant discharged from the compressor 41 to flow through the indoor heat exchanger 21.

In the indoor heat exchanger 21, heat exchange is performed between the refrigerant and the indoor air supplied by the indoor fan 22. The refrigerant cooled by the indoor heat exchanger 21 is decompressed by the outdoor expansion valve 45 and flows into the outdoor heat exchanger 44.

In the outdoor heat exchanger 44, heat is exchanged between the refrigerant and the indoor air supplied by the outdoor fan 46. The refrigerant warmed by the heat exchange in the outdoor heat exchanger 44 is sucked into the compressor 41 via the four-way valve 42 and the accumulator 43.

The indoor air heated by the indoor heat exchanger 21 is blown out from the indoor unit 2 to the room RM to heat the room.

In this air conditioner 10, in the heating operation, the indoor heat exchanger 21 functions as a refrigerant radiator to warm the indoor air in the room RM, and the outdoor heat exchanger 44 functions as a refrigerant evaporator.

(3-1-3) Dehumidifying operation Before the start of the dehumidifying operation, the control unit 8 is instructed to perform the dehumidifying operation, for example, from the remote controller 15. Here, a case where a plurality of modes can be selected in the dehumidifying operation will be described.

Information on which mode of the first dehumidification mode, the second dehumidification mode, and the third dehumidification mode is selected is transmitted from the remote controller 15 to the control unit 8.

In the first dehumidification mode, the first dehumidification operation is performed so that substantially the entire indoor heat exchanger 21 is in the evaporation area.

In the second dehumidification mode, a second dehumidification operation is performed in which at least a part of the windward side of the indoor heat exchanger 21 is set as an evaporation area, while the remaining part of the indoor heat exchanger 21 is set as a superheat area.

In the third dehumidification mode, in the indoor heat exchanger 21, the portion upstream of the reheat dehumidification valve 28 is the condensation region, while the portion downstream of the reheat dehumidification valve 28 is the evaporation region. Is done.

During the dehumidifying operation, the control unit 8 switches the four-way valve 42 to the state shown by the solid line in FIG.

During the dehumidifying operation, the four-way valve 42 causes the refrigerant to flow between the first port P1 and the second port P2, and the refrigerant to flow between the third port P3 and the fourth port P4. Therefore, in the refrigerant circuit 13, the direction in which the refrigerant flows is the same during the dehumidifying operation and the cooling operation. The refrigeration cycle is also carried out in the refrigerant circuit 13 of the dehumidifying operation.

(3-1-3-1) First dehumidifying operation In the first dehumidifying operation, when the refrigerant circulates in the refrigerant circuit 13, the control unit 8 fully opens the reheat dehumidifying valve 28 and sets the operating frequency of the compressor 41. Adjust the opening degree of the outdoor expansion valve 45. In the first dehumidification operation, substantially the entire indoor heat exchanger 21 is set as the evaporation region.

As a result, the first dehumidifying operation has a high sensible heat capacity, which is the ability to change the room temperature.

Here, to make substantially all of the indoor heat exchanger 21 an evaporation region is not only when the entire indoor heat exchanger 21 is made into an evaporation region, but also only a part of the indoor heat exchanger 21 except for a part. Including when making the evaporation area.

When only a part of this (for example, a part of 1/3 or less of the total volume of the indoor heat exchanger 21) does not become an evaporation region, for example, a part near the refrigerant outlet of the indoor heat exchanger 21 depending on the indoor environment or the like. There are times when it becomes an overheated area.

(3-1-3-2) Second dehumidification operation In the second dehumidification operation, when the refrigerant circulates in the refrigerant circuit 13, the control unit 8 fully opens the reheat dehumidification valve 28 and sets the operating frequency of the compressor 41. Adjust the opening degree of the outdoor expansion valve 45.

In the second dehumidifying operation, at least a part of the windward side of the first heat exchange section 21F is set as an evaporation region, while the remaining portion of the first heat exchange section 21F and the second heat exchange section 21R are set as a superheat zone.

The control unit 8 controls the compressor 41 and the outdoor expansion valve 45 so that the evaporation area becomes a predetermined volume (for example, 2/3 of the total volume of the indoor heat exchanger 21) or less during the second dehumidification operation.

At this time, the opening degree of the outdoor expansion valve 45 is usually smaller than the opening degree of the outdoor expansion valve 45 during the first dehumidifying operation.

Since the sensible heat capacity of the second dehumidifying operation is lower than that of the first dehumidifying operation, it is possible to dehumidify the room while suppressing a decrease in room temperature when the heat load in the room is neither high nor low.

(3-1-3-3) Third dehumidification operation (reheat dehumidification operation)
In the third dehumidifying operation, when the refrigerant circulates in the refrigerant circuit 13, the control unit 8 closes the reheat dehumidifying valve 28, adjusts the operating frequency of the compressor 41, and fully opens the opening degree of the outdoor expansion valve 45. do.

In the third dehumidification operation, the pressure is reduced by closing the reheat dehumidification valve 28.

In the third dehumidification operation, the first heat exchange unit 21F is set to the condensation region, while the second heat exchange unit 21R is set to the evaporation region.

In the third dehumidification operation, since the first heat exchange unit 21F functions as a condensed region, it is possible to dehumidify the room while suppressing a decrease in room temperature as compared with the second dehumidification operation.

(3-1-4) Humidification operation Before the start of the humidification operation, the control unit 8 is instructed by, for example, the remote controller 15 to perform the humidification operation and the target humidity. During the humidification operation, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13. However, in the humidification / heating operation, the refrigeration cycle in the refrigerant circuit 13 is also carried out at the same time as the humidification operation.

Upon receiving the instruction of the humidifying operation, the control unit 8 first controls the humidifier 6 so as to perform the first drying operation for drying the intake / exhaust hose 68.

In the first drying operation, the control unit 8 stops the suction fan 65 and the suction rotor 61. In the first drying operation, the control unit 8 heats the air in the heater 62, switches the switching damper 63 so as to generate an air flow from the first inlet / outlet 63a to the second inlet / outlet 63b, and drives the intake / exhaust fan 64.

The outdoor air taken in from the humidifying air intake 69c is heated by the heater 62 and the temperature rises, so that the relative humidity decreases. Since the suction rotor 61 is stopped, the supply of moisture to the air passing through the suction rotor 61 does not occur.

The air intake / exhaust fan 64 passes through the intake / exhaust hose 68 to dry the intake / exhaust hose 68. For example, the control unit 8 counts the operation time with the timer 83, and when the operation time reaches a predetermined time, the control unit 8 ends the first drying operation.

The humidification operation is started after the first drying operation is completed. When the first drying operation is completed, the control unit 8 drives the suction fan 65 and controls the suction rotor 61 to rotate. When the outdoor air passes through the suction rotor 61 by driving the suction fan 65, moisture is adsorbed to the suction rotor 61 from the outdoor air.

The location where the moisture is adsorbed moves to the location where the air heated by the heater 62 passes due to the rotation of the adsorption rotor 61. As a result, moisture is desorbed from the place where the moisture is adsorbed to the heated air.

The air having high humidity in this way is sent to the room RM by the intake / exhaust fan 64 through the intake / exhaust hose 68 and the indoor unit 2. The control unit 8 drives the indoor fan 22 of the indoor unit 2 in order to blow high humidity air into the room RM.

(3-1-5) Blower operation Before the start of the blower operation, the control unit 8 is instructed to perform the blower operation, for example, from the remote controller 15. During the blowing operation, the control unit 8 stops the compressor 41 and stops the refrigerating cycle in the refrigerant circuit 13.

In the ventilation operation, the remote controller 15 may instruct the target air volume, or the indoor unit 2 may automatically select the target air volume. The control unit 8 controls the motor 22m of the indoor fan 22 so that the target air volume is reached.

For example, in normal operation, the control unit 8 is configured to be able to increase the rotation speed in the order of the L tap, the M tap, and the H tap from the LL tap having the lowest rotation speed.

(3-1-6) Ventilation operation Before the start of the ventilation operation, the control unit 8 is instructed to perform the ventilation operation from, for example, the remote controller 15. During the ventilation operation, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13.

Also, during the ventilation operation, the humidification operation is also stopped. In order to stop the humidification operation, the rotation of the suction fan 65 and the suction rotor 61 is stopped. In the ventilation operation, the control unit 8 controls the motor 64m so as to drive the intake / exhaust fan 64.

Further, in the ventilation operation, the control unit 8 switches between the supply air state and the exhaust state by controlling the switching damper 63.

In the air supply state, the outdoor air is taken in from the humidifying air intake port 69c and blown out to the room RM through the intake / exhaust hose 68 and the indoor unit 2. In the exhaust state, the air in the room is exhausted from the room RM through the indoor unit 2 and the intake / exhaust hose 68 from the humidifying air intake port 69c.

(3-1-7) Air Purifying Operation The indoor air conditioning system 1 of the first embodiment performs an air cleaning operation using the discharge unit 29. Here, the air cleaning operation is an operation of suppressing harmful components and / or odor components in the air.

The air cleaning operation is, for example, an operation in which harmful components and / or odor components are suppressed by the decomposing power of streamer discharge.

(3-2) Cleaning operation FIG. 7 is a flowchart for explaining the operation of the indoor air conditioning system 1. Hereinafter, the cleaning operation will be described with reference to the flowchart of FIG. When the washing operation is started, the control unit 8 is instructed to start the washing operation (in the case of manual start), and the control unit 8 automatically determines the start of the washing operation (automatically). In case of start).

The indoor air conditioning system 1 of the first embodiment corresponds to both the case of manual start and the case of automatic start. However, the indoor air conditioning system 1 can also be configured to support either the manual start case or the automatic start case.

(Step S1)
In step S1, the control unit 8 determines whether or not there is an instruction for cleaning operation. When the control unit 8 determines that there is an instruction for the cleaning operation, the control unit 8 proceeds to step S2.

As a case of manual start, for example, the washing operation start button for instructing the washing operation of the remote controller 15 may be pressed.

If the control unit 8 determines that there is no instruction for cleaning operation, the control unit 8 proceeds to step S11.

(Step S2)
In step S2, the control unit 8 controls the motor 27m so as to open the horizontal flap 27 and fix it at a predetermined angle in order to start the washing operation. The angle of the horizontal flap 27 is preferably an angle at which the air blown from the indoor unit 2 does not directly hit the person even if there is a person in the room RM.

Further, the control unit 8 controls the discharge unit 29 so as to start the streamer discharge. If the horizontal flap 27 has already been opened before the process of step S2, it is maintained. Further, before the process of step S2, when the streamer discharge has already started, the state in which the streamer discharge is being performed is maintained. The streamer discharge ends when the cleaning operation ends.

When the streamer discharge is performed in the washing operation, the indoor air conditioning system 1 can clean the indoor heat exchanger 21. However, the indoor air conditioning system 1 can also be configured so as to stop the discharge of the discharge unit 29 and perform the cleaning operation.

(Step S3)
In step S3, the control unit 8 determines whether or not the humidity of the air in the room RM has reached a predetermined humidity. The control unit 8 determines that the indoor humidity value has reached the predetermined value AH1 (predetermined humidity) not only when the indoor humidity value is the predetermined value AH1 but also when the indoor humidity value exceeds the predetermined value AH1. do. As the humidity, absolute humidity may be used, but relative humidity may be used instead. When substituting with relative humidity, the detected value of relative humidity may be adjusted according to the atmospheric temperature, if necessary.

The control unit 8 detects the indoor temperature by the indoor temperature sensor 31 and detects the relative humidity in the room by the indoor humidity sensor 32. When the absolute humidity is used for the humidity, the control unit 8 uses the air temperature value MT detected by the indoor temperature sensor 31 and the air relative humidity value MRH detected by the indoor humidity sensor 32 in the room RM. The absolute humidity of the air inside can be calculated.

When the control unit 8 determines that the humidity in the room has reached the predetermined value AH1, the control unit 8 proceeds to step S4.

When the control unit 8 determines that the humidity in the room has not reached the predetermined value AH1, the control unit 8 proceeds to step S31.

(Step S4)
Next, the control unit 8 starts the cleaning operation in step S4. In the cleaning operation, the humidifier 6 has stopped the humidifying operation. In the cleaning operation, the air conditioner 10 operates the indoor heat exchanger 21 as an evaporator, as in the cooling operation or the dehumidifying operation. In the indoor air conditioning system 1 of the first embodiment, the control unit 8 controls the air conditioner 10 so as to perform the same operation as the first dehumidifying operation.

The control unit 8 has started counting by the timer 83 from the start of the washing operation.

(Step S5)
Next, in step S5, the control unit 8 determines whether or not the predetermined time tt2 has elapsed since the washing operation was started. When the control unit 8 determines that "a predetermined time tt2 has elapsed since the start of the washing operation", the control unit 8 ends the first dehumidifying operation and proceeds to step S6.

When the control unit 8 determines that "the predetermined time tt2 has not elapsed since the start of the cleaning operation", the control unit 8 returns to step S4 and continues the cleaning operation.

(Step S6)
In step S6, the control unit 8 performs a drying operation and ends the washing operation. The drying operation in the washing operation is the same as the first drying operation in the humidifying operation in the normal operation. The control unit 8 stops the suction fan 65 and the suction rotor 61 of the humidifier 6 in order to dry the intake / exhaust hose 68.

Further, the control unit 8 heats the air in the heater 62 of the humidifier 6, switches the switching damper 63 so as to generate an air flow from the first inlet / outlet 63a to the second inlet / outlet 63b, and drives the intake / exhaust fan 64.

(Step S11)
Steps S1 to S6 are the main flow of operation. On the other hand, if the control unit 8 determines in step S1 that there is no instruction for the cleaning operation, the control unit 8 determines in step S11 whether or not the condition for starting the cleaning operation is satisfied. When the control unit 8 determines that "the condition for starting the cleaning operation is satisfied", the control unit 8 proceeds to step S2. The conditions for shifting to the washing operation in step S11 will be described later in "(3-3) Conditions for shifting to the washing operation".

Further, when the control unit 8 determines that "the condition for starting the cleaning operation is not satisfied", the control unit 8 returns to step S1.

(Step S31)
Further, if the control unit 8 determines in step S3 that the humidity in the room has not reached the predetermined value AH1, the control unit 8 determines in step S31 whether it is the first humidification operation or the first humidification operation based on the temperature in the room. 2 In order to select the humidification operation, it is determined whether or not the temperature detected by the room temperature sensor 31 is equal to or higher than the predetermined temperature T1.

In the case of this indoor air conditioning system 1, two methods are set for supplying water by the humidifier 6. The control unit 8 selects an appropriate operation from the first humidification operation and the second humidification operation.

The first humidification operation is an operation of humidifying at the same time as heating. In the first humidification operation, the control unit 8 controls the air conditioner 10 and the humidifier 6 so that the air conditioner 10 heats the room RM and the humidifier 6 simultaneously humidifies the room RM. ..

The second humidification operation is an operation in which the heating operation in the first humidification operation is stopped and only the humidification operation is performed. In the second humidification operation, the control unit 8 controls the air conditioner 10 and the humidifier 6 so as to humidify the room RM by the humidification operation of the humidifier 6. In the second humidification operation, the heating operation is not performed, but since the indoor unit 2 sends high humidity air to the room RM, the air conditioner 10 performs the air blowing operation.

(Step S32A)
If the control unit 8 determines in the previous step S31 that "the temperature detected by the indoor temperature sensor 31 is not equal to or higher than the predetermined temperature T1", the control unit 8 performs the above-mentioned first humidification operation in the step S32A.

(Step S32B)
If the control unit 8 determines in the previous step S31 that "the temperature detected by the indoor temperature sensor 31 is equal to or higher than the predetermined temperature T1", the control unit 8 performs the above-mentioned second humidification operation in the step S32B.

In both the first humidification operation and the second humidification operation, the humidification operation by the humidifier 6 is performed. The humidifying operation performed in the first humidifying operation and the second humidifying operation is the same as the humidifying operation of the humidifier 6 performed in the humidifying operation of the normal operation.

However, in the humidification operation performed in the first humidification operation and the second humidification operation, the humidification capacity is set to be equal to or higher than the maximum value of the humidification capacity that appears in the humidification operation of the normal operation. In the washing operation, the comfort of the room RM is not emphasized, but rather, the priority is given to finishing the washing operation quickly.

Therefore, in the washing operation, the first humidification operation or the second humidification operation is performed with the maximum value or more of the humidification capacity appearing in the humidification operation of the normal operation so that the humidity in the room reaches the predetermined value AH1 quickly.

For example, when the humidifying capacity of the normal operation is set to L tap, M tap, and H tap in order from the lowest humidifying capacity, the H tap is selected in the first humidification operation and the second humidification operation. ..

In the first humidification operation, the control unit 8 controls the air conditioner 10 together with the humidifier 6 so that the heating operation is performed at the same time as the humidification operation. The control unit 8 controls the air conditioner 10 so as to reach a target temperature preset for the cleaning operation.

The heating operation performed by the air conditioner 10 in the washing operation is the same as the operation of the air conditioner 10 in the heating operation in the normal operation, so the description thereof is omitted here.

(Step S33)
Next, the control unit 8 determines in step S33 whether or not a predetermined time tt1 has elapsed from the start of humidification in either the first humidification operation or the second humidification operation. ..

When the control unit 8 determines that the predetermined time tt1 has not elapsed, the control unit 8 returns to step S3 and continues the first humidification operation or the second humidification operation until the humidity in the room reaches the predetermined value AH1.

When the control unit 8 determines that the predetermined time tt1 has elapsed, the control unit 8 proceeds to step S34.

(Step S34)
If the control unit 8 determines in step S33 that "the predetermined time tt1 has elapsed", the control unit 8 notifies the abnormality in step S34 and returns to step S6.

FIG. 8 is a timing chart for comparing the humidification operation and the washing operation in the normal operation. In FIG. 8, assuming that the operation starts at the same time at time t10, the washing operation and the humidifying operation of the normal operation are compared.

In the cleaning operation, since there is no operation for drying the intake / exhaust hose 68 before the humidification operation, the humidification operation can be started immediately (time t10). In the washing operation, the humidifying operation can be completed and the washing operation can be started at the time t11 when the first drying operation of the normal operation continues.

In the example shown in FIG. 8, the cleaning operation of the cleaning operation is completed at the time t12 when the first drying operation of the humidifying operation of the normal operation is completed. In the example shown in FIG. 8, the drying operation at the end of the washing operation can be completed at the time t13 when the humidifying operation of the normal operation ends.

(3-3) Conditions for transition to cleaning operation In the indoor air conditioning system 1, the control unit 8 automatically determines whether or not to shift to cleaning operation in step S11 of FIG. 7.

FIG. 9 is a flowchart showing an operation example of the control unit when automatically shifting to the cleaning operation. The process of the control unit 8 for determining the transition condition of the washing operation will be described with reference to FIG.

(Step S41)
In step S41, the control unit 8 determines whether or not the operation mode is an operation other than the cleaning operation. When the control unit 8 determines that "the operation mode is not an operation other than the cleaning operation (the operation mode is the cleaning operation)", the process proceeds to step S48 and the integrated drive time is reset.

When the control unit 8 determines that the operation mode is an operation other than the cleaning operation, the control unit 8 proceeds to step S42.

(Step S42)
Next, in step S42, the control unit 8 determines whether or not the operation mode is an operation other than the cooling operation and the dehumidifying operation. When the control unit 8 determines that "the indoor air conditioning system 1 is performing an operation other than the cooling operation and the dehumidifying operation", in other words, the indoor air conditioning system 1 is in the heating operation, the humidification operation, the ventilation operation, the ventilation operation or the air. If the clean operation is being performed, the process proceeds to step S43.

If the control unit 8 does not determine that "the indoor air conditioning system 1 is performing an operation other than the cooling operation and the dehumidifying operation", the process proceeds to step S431.

(Step S43)
The control unit 8 counts the drive time of the indoor fan 22 in step S43.

The processor 81a counts the drive time of the indoor fan 22, for example, by using the timer 83. The processor 81a stores the counted drive time in the memory 81b. The drive time of the indoor fan 22 is counted until the current operation is completed.

For example, even during the heating operation, when the temperature of the room RM has reached the target temperature and the compressor 41, the indoor fan 22 and the like are stopped, the drive time of the indoor fan 22 is not counted.

The drive time of the indoor fan 22 is counted in the first drive time and the second drive time. The first drive time is the drive time of the indoor fan 22 during the heating operation (including the heating / humidifying operation) of the indoor unit 2.

The second drive time is the drive time of the indoor fan 22 during the humidification operation (excluding the heating / humidification operation), the ventilation operation, the ventilation operation, and the air cleaning operation.

(Step S431)
On the other hand, if the control unit 8 does not determine that the indoor air conditioning system 1 is "operating other than the cooling operation or the dehumidifying operation" in the previous step S42, in other words, the indoor air conditioning system 1 performs the cooling operation or the dehumidifying operation. If so, in step S431, it is determined whether or not the operation time of the cooling operation or the dehumidifying operation is tt3 or more for a predetermined time.

The operating time of the cooling operation or the dehumidifying operation is counted by the processor 81a using, for example, the timer 83. The processor 81a stores the counted operation time in the memory 81b.

When the control unit 8 determines that "the operation time of the cooling operation or the dehumidification operation is tt3 or more for the predetermined time", the control unit 8 proceeds to step S48 and resets the integrated drive time of the indoor fan 22. The control unit 8 resets the integrated drive time when the indoor unit 2 that causes dew condensation is cooled or dehumidified by the indoor heat exchanger 21.

Further, when the control unit 8 determines that the operation time of the cooling operation and the dehumidification operation is less than the predetermined time tt3, the control unit 8 proceeds to step S44 without counting the drive time of the indoor fan 22.

(Step S44)
In step S44, the control unit 8 determines whether or not the current operation has been completed. In other words, the control unit 8 controls so that the drive time of the indoor fan 22 when the indoor unit 2 is operating to cause dew condensation on the indoor heat exchanger 21 in normal operation is not included in the integrated drive time.

When the control unit 8 determines that the current operation has ended, the control unit 8 proceeds to step S45.

(Step S45)
The control unit 8 calculates the integrated drive time of the indoor fan 22 in step S45. The control unit 8 integrates the drive times stored in the memory 81b to calculate the integrated drive time.

Here, the integrated drive time is calculated by totaling the drive times of the indoor fans 22 of the heating operation, the humidification operation, the ventilation operation, the ventilation operation, and the air cleaning operation. However, the method of calculating the integrated drive time is not limited to the method of simply summing the drive times of each operation. For example, the control unit 8 can be configured to calculate the integrated drive time by weighting each type of operation.

(Step S46)
In step S46, the control unit 8 determines whether or not the integrated drive time is equal to or longer than the predetermined drive time CT1. When the control unit 8 determines that the integrated drive time is equal to or longer than the predetermined drive time CT1, the control unit 8 proceeds to step S47.

The determination in step S47 in FIG. 9 is an example of the determination in step S11 in FIG. 7. Here, if the integrated drive time is equal to or longer than the predetermined drive time CT1, it is determined that the condition for shifting to the cleaning operation is satisfied.

However, the condition for shifting to the cleaning operation does not necessarily have to be that the integrated drive time is equal to or longer than the predetermined drive time CT1. As a condition for shifting to the washing operation, for example, a condition that the normal operation is stopped may be added.

The control unit 8 returns to step S41 and repeats the step for integrating the integrated drive time when it is determined that the integrated drive time is less than the predetermined drive time CT1.

(Step S47)
In step S47, the control unit 8 sets a flag indicating that the transition condition to the washing operation is satisfied and stores it in the memory 81b.

(Step S48)
The control unit 8 resets the integrated drive time in step S48.

(Step S49)
If the indoor air conditioning system 1 is not stopped in step S49, the control unit 8 returns to step S41 and repeats the step for integrating the integrated drive time.

In the case of the cleaning operation, step S41, step S48 and step S49 are repeated, so that the integrated drive time is not counted even if the indoor fan 22 is driven.

(3-4) Humidifier control of the air conditioner 10 in the washing operation Humidification operation by the humidifier 6 is performed in both the first humidification operation and the second humidification operation. The humidification operation performed in the first humidification operation and the second humidification operation is set so as to be equal to or more than the maximum value of the humidification capacity appearing in the humidification operation of the normal operation.

FIG. 10A is an operation flowchart of the humidifier control of the air conditioner 10 in the washing operation. In FIG. 10A, the flow after step S321 shows the control operation of the control unit 8 performed inside the steps S32A and S32B of FIG. 7.

(Step S321)
In step S321, the control unit 8 determines whether or not there is a humidification operation start command for the humidifier 6. The control unit 8 proceeds to step S322 when there is a command to start the humidifying operation of the humidifier 6.

(Step S322)
The control unit 8 starts the operation of the humidifier 6 in step S322. The humidifying capacity of the humidifier 6 is set to L tap, M tap, and H tap in ascending order, and the H tap is selected in the first humidifying operation and the second humidifying operation during the washing operation.

(Step S323)
The control unit 8 determines in step S323 whether or not an operation for reducing the humidifying capacity of the humidifier 6 has been performed. The operation of reducing the humidifying capacity of the humidifier 6 includes an operation of stopping the operation of the humidifier 6. In the case of the first embodiment, since the air conditioner 10 and the humidifier 6 are integrated, the operation of reducing the humidifying capacity of the humidifier 6 is performed via the remote controller 15.

When the control unit 8 determines that an operation for reducing the humidifying capacity of the humidifier 6 has been performed, the control unit 8 proceeds to step S324. If the control unit 8 does not determine that the operation for reducing the humidifying capacity of the humidifier 6 has been performed, the control unit 8 proceeds to step S326.

(Step S324)
In step S324, the control unit 8 cancels the operation of reducing the humidifying capacity of the humidifier 6. For example, the user reduces the humidifying capacity of the humidifier 6 from the H tap to the L tap via the remote controller 15 without noticing that the indoor heat exchanger 21 is being washed by the air conditioner 10. When the operation for causing the humidifier 6 or the operation for stopping the operation of the humidifier 6 is performed, the control unit 8 does not accept the request related to the operation and ignores it.

(Step S325)
In step S325, the control unit 8 states that "the washing operation is in progress, the washing operation and the humidifying operation of the humidifier 106 are linked, and it is necessary to restore the humidifying capacity of the humidifier 6 to the original state." Is notified via the display screen 15a of the remote controller 15 or the speaker 82. This is to prevent the user from misunderstanding that the operation of the remote controller 15 does not work.

The execution order of steps S324 and S325 may be reversed.

(Step S326)
In step S326, the control unit 8 determines whether or not there is a stop command for the washing operation. This is because the user may want to stop the washing operation, and in such a case, it is necessary to forcibly end the washing operation even during the humidifying operation.

When the control unit 8 is instructed to stop the cleaning operation, the control unit 8 proceeds to step S6 in FIG. The control unit 8 may notify the stop of the washing operation via a communication terminal 230 such as a smartphone or a remote controller 15.

Further, the control unit 8 proceeds to step S33 in FIG. 7 when there is no stop command for the cleaning operation.

As described above, in the first humidifying operation of step S32A and the second humidifying operation of step S32B of FIG. 7, the controls of steps S321 to S326 are executed, and the decrease in the humidifying capacity of the humidifier 6 is suppressed. ..

In step S324 of the flowchart of FIG. 10A, the operation of lowering the humidifying capacity of the humidifier 6 is canceled, but the operation is not limited to this.

FIG. 10B is another operation flowchart of the humidifier control of the air conditioner 10 in the washing operation.

In FIG. 10B, the difference between FIG. 10A and FIG. 10B is that step S324 in FIG. 10A is replaced with step S324'.

In step S324', the control unit 8 restores the humidifying capacity immediately before the operation of lowering the humidifying capacity of the humidifier 6 (hereinafter referred to as “original humidifying capacity”).

For example, the user may stop the operation of the humidifier 6 via the remote controller 15 without noticing that the indoor heat exchanger 21 is being washed by the air conditioner 10, or the humidifier 6 When the operation of reducing the humidifying capacity of the humidifier from the H tap to the L tap is performed, the control unit 8 accepts the operation once, but restarts the humidifying operation of the humidifier 6 or returns the tap to the H tap almost at the same time. And restore the original humidifying capacity. Since the other steps are the same as those in FIG. 10A, the description thereof will be omitted.

<Second Embodiment>
(1) Overall Configuration In the first embodiment, the case where the air conditioner 10 and the humidifier 6 are integrated has been described, but the air conditioner 10 and the humidifier may be separate bodies.

FIG. 11 is a conceptual diagram showing an example of the configuration of the indoor air conditioning system 1 according to the second embodiment. In FIG. 11, in the indoor air conditioning system 1, the air conditioner 10 and the humidifier 106 with an air purifying function (hereinafter referred to as the humidifier 106) are separate bodies. The humidifier 106 corresponds to the humidifier 6 of the first embodiment. The humidifier 106 is installed in the room RM and has a configuration in which ventilation operation cannot be performed.

As shown in FIG. 11, the indoor unit 2 of the air conditioner 10 and the humidifier 106 are connected to each other via a wireless LAN router 210. A wireless LAN adapter 85 is connected to the indoor control unit 81 of the indoor unit 2.

Here, the case where the wireless LAN adapter 85 is externally attached to the indoor unit 2 is shown. However, the wireless LAN adapter 85 may be built in the indoor unit 2. The humidifier control unit 89 of the humidifier 106 has a built-in function of a wireless LAN adapter.

FIG. 14 is a block diagram for explaining the configuration of the indoor air conditioning system 1 of FIG. In FIGS. 11 and 14, the indoor air conditioning system 1 including the air conditioner 10 and the humidifier 106 includes a control unit 8. When the cleaning operation is performed, the humidifier 106 is instructed to operate by the indoor control unit 81 via the wireless LAN router 210 and the wireless LAN adapter 85.

The control unit 8 has an indoor control unit 81, an outdoor control unit 86, and a humidifier control unit 89. Since the control of the indoor unit 2 by the indoor control unit 81 and the control of the outdoor unit 4 by the outdoor control unit 86 are described in the first embodiment, the description thereof will be omitted here.

As shown in FIG. 11, the indoor air conditioning system 1 can instruct the air conditioner 10 and the humidifier 106 by using a communication terminal 230 such as a smartphone. For example, an instruction output from a communication terminal 230 such as a smartphone is transmitted to the air conditioner 10 and the humidifier 106 via the wireless LAN router 210 or via the Internet 240, the broadband router 220, and the wireless LAN router 210. ..

(2) Configuration of Humidifier 106 FIG. 12 is an exploded perspective view showing a configuration example of the humidifier 106 of FIG. In FIG. 12, the humidifier 106 includes a casing 110, a pre-filter 121, a dust collecting filter 122, a deodorizing filter 123, a blower fan 130, a humidifying filter unit 140, a water tray 150, and a water tank 160. I have. The casing 110 includes a main body 111 and a front panel 112.

FIG. 13 is a perspective view showing the appearance of the humidifier 106 of FIG. In FIG. 13, the humidifier 106 has a suction port 113 at the boundary between the front panel 112 and the main body 111. The suction port 113 is provided on the lower portion and both sides of the front panel 112. The outlet 114 is provided on the upper part of the main body 111.

FIG. 14 is a block diagram for explaining the configuration of the indoor air conditioning system 1 of FIG. In FIGS. 11, 12, 13 and 14, when the blower fan 130 is driven, the air in the room sucked from the suction port 113 is the pre-filter 121, the dust collection filter 122, the deodorizing filter 123 and the humidifying filter unit. It passes through 140 and is blown out from the outlet 114.

An operation panel 115 is provided on the top surface of the main body 111. The operation panel 115 is provided with a plurality of operation buttons.

The pre-filter 121 mainly removes large dust from the passing air. The dust collecting filter 122 mainly removes fine dust from the passing air. The deodorizing filter 123 contains, for example, activated carbon. The deodorizing filter 123 mainly removes odorous components from the passing air.

The humidifying filter unit 140 has a humidifying rotor 141 including a humidifying filter 142. The humidifying rotor 141 is rotated by a motor 143 (see FIG. 14). The humidifying filter 142 receives the supply of water stored in the water tray 150 by rotating together with the humidifying rotor 141.

The humidifying filter 142 that has been supplied with water supplies water to the passing air. When the motor 143 stops and the rotation of the humidifying rotor 141 stops, the humidifying filter unit 140 stops humidification.

The water tray 150 replenishes the water supplied to the humidifying filter 142 by receiving the water supply from the water tank 160. The user replenishes the water tank 160 with water.

The control unit 8 can control the motor 143 via the humidifier control unit 89. Therefore, the control unit 8 can make the humidifier 106 perform the humidifying operation by turning on the motor 143, and stop the humidifying operation on the humidifier 106 by turning off the motor 143.

As shown in FIG. 14, the humidifier 106 includes an indoor temperature sensor 171, an indoor humidity sensor 172, and a water supply sensor 173. The indoor temperature sensor 171 and the indoor humidity sensor 172 and the water supply sensor 173 are connected to the humidifier control unit 89.

Therefore, the control unit 8 can detect the temperature of the room air and the relative humidity by the room temperature sensor 171 and the room humidity sensor 172 via the humidifier control unit 89. The control unit 8 of the first embodiment uses the indoor temperature sensor 31 and the indoor humidity sensor 32 for control. The control unit 8 of the second embodiment may use the indoor temperature sensor 31 and the indoor humidity sensor 32 or the indoor temperature sensor 171 and the indoor humidity sensor 172 for control.

The control unit 8 of the second embodiment may use both sensors at the same time for control, for example, using the average value of the

indoor temperature sensors

31 and 171 as the temperature of the indoor air. Further, the control unit 8 of the second embodiment may use both sensors at the same time for control, for example, using the average value of the

indoor humidity sensors

32 and 172 as the relative humidity of the indoor air.

(3) Cleaning operation of the indoor air conditioning system 1 The cleaning operation of the indoor air conditioning system 1 is different from the cleaning operation of the indoor air conditioning system 1 of the first embodiment, except for the difference that the humidifier 106 is used instead of the humidifier 6. It can be configured in the same way. Therefore, control is performed according to the flowcharts shown in FIGS. 7 and 9.

The indoor air conditioning system 1 performs a washing operation using the humidifier 106. In the indoor air conditioning system 1, the humidifier 106 sucks in the indoor air from the suction port 113, moisturizes the indoor air, and blows it out into the room RM from the outlet 114.

Therefore, the indoor air conditioning system 1 performs the first humidification operation by using the air conditioner 10 and the humidifier 106. In the first humidification operation, the control unit 8 causes the air conditioner 10 to perform the heating operation of the room RM, and at the same time causes the humidifier 106 to humidify the room RM. In the second humidification operation of the indoor air conditioning system 1, the control unit 8 stops the operation of the air conditioner 10 and causes the humidifier 106 to humidify.

(3-1) Humidifier control In the first humidification operation and the second humidification operation, it is desirable to control the humidifier 106 according to the flowchart shown in FIG. 10B. This is because, in the second embodiment, the air conditioner 10 and the humidifier 106 are separate bodies, so that when the user directly turns off the power of the humidifier 106 or changes the tap from the H tap to the L tap, This is because it is not easy to execute the operation "cancel the operation of reducing the humidifying capacity of the humidifier 106" as in step S324 of the flowchart shown in FIG. 10A.

When the humidifier 106 is controlled according to the flowchart shown in FIG. 10B, the step S6 (see FIG. 7) for drying the intake / exhaust hose 68 can be omitted in the cleaning operation.

This is because the indoor air conditioning system 1 has the humidifier 106 placed in the room RM, so that it is not necessary to provide an intake / exhaust hose 68 that passes through the wall WL.

(3-2) Humidifier control when the humidifier 106 is equipped with an operation restriction function When the humidifier 106 is equipped with an operation restriction function, the control unit 8 limits the operation of the humidifier 106 as a measure to suppress the decrease in capacity. The function may be enabled by remote control.

FIG. 15 is an operation flowchart of the humidifier control of the air conditioner 10 in the washing operation when the humidifier 106 has an operation restriction function.

(Step S421)
When the control unit 8 determines in step S31 shown in FIG. 7 that "the temperature detected by the indoor temperature sensor 31 is not equal to or higher than the predetermined temperature T1", the control unit 8 humidifies the humidifier 106 in step S421. Determine if there is an operation start command. The control unit 8 proceeds to step S422 when there is a command to start the humidifying operation of the humidifier 106.

(Step S422)
The control unit 8 starts the operation of the humidifier 106 in step S422. The humidifying capacity of the humidifier 106 is set to L tap, M tap, and H tap in ascending order, and the H tap is selected in the first humidifying operation and the second humidifying operation during the washing operation.

(Step S423)
The control unit 8 enables the operation restriction function of the humidifier 106 in step S422. The operation restriction function is a function of canceling an input other than a predetermined operation of the humidifier 106.

Here, the predetermined operation is an operation of "holding down" a specific button (here, referred to as a first button 116) among a plurality of buttons provided on the operation panel 115 of the humidifier 106, or a first operation. It is an operation of "pressing the button 116 twice", and is an operation that the user does not normally perform.

Therefore, when the operation restriction function is enabled, the input related to the operation of turning off the power of the humidifier 106 and the operation of changing the tap to a tap lower than the H tap is canceled.

(Step S424)
The control unit 8 determines in step S423 whether or not an operation for reducing the humidifying capacity of the humidifier 106 has been performed. The operation of reducing the humidifying capacity of the humidifier 106 also includes an operation of stopping the operation of the humidifier 106.

When the control unit 8 determines that an operation for reducing the humidifying capacity of the humidifier 106 has been performed, the control unit 8 proceeds to step S425. If the control unit 8 does not determine that the operation for reducing the humidifying capacity of the humidifier 106 has been performed, the control unit 8 proceeds to step S426.

(Step S425)
In step S425, the control unit 8 states that "the washing operation is in progress, the washing operation and the humidifying operation of the humidifier 106 are linked, and it is necessary to restore the humidifying capacity of the humidifier 106 to the original state." Is notified via the display screen 15a of the remote controller 15 or the speaker 82. This is to prevent the user from misunderstanding that the operation of the humidifier 106 does not work.

The execution order of steps S424 and S425 may be reversed.

(Step S426)
In step S426, the control unit 8 determines whether or not there is a stop command for the washing operation. This is because the user may want to stop the washing operation, and in such a case, it is necessary to forcibly end the washing operation even during the humidifying operation.

The control unit 8 proceeds to step S427 when there is a stop command for the cleaning operation. Further, the control unit 8 proceeds to step S33 in FIG. 7 when there is no stop command for the cleaning operation.

(Step S427)
The control unit 8 stops the cleaning operation in step S427. The control unit 8 may notify the stop of the washing operation via a communication terminal 230 such as a smartphone or a remote controller 15.

As described above, in the first humidifying operation of step S32A and the second humidifying operation of step S32B of FIG. 7, the controls of steps S321 to S326 are executed, and the decrease in the humidifying capacity of the humidifier 106 is suppressed. ..

(3-3) When the humidifier 106 is not remotely controlled The control unit 8 cancels the operation of reducing the humidifying capacity of the humidifier 106 by the user, restores the humidifying capacity to the original state, or operates the operation limiting function. However, it is also possible to leave it to the user's judgment whether or not to restore the humidifying capacity to the original state.

FIG. 16 is another operation flowchart of the humidifier control of the air conditioner 10 in the washing operation. In FIG. 16, the flow after step S521 shows the control operation of the control unit 8 performed inside the steps S32A and S32B of FIG. 7.

(Step S521)
In step S521, the control unit 8 determines whether or not there is a humidification operation start command for the humidifier 106. The control unit 8 proceeds to step S522 when there is a command to start the humidifying operation of the humidifier 106.

(Step S522)
The control unit 8 starts the operation of the humidifier 106 in step S522. The humidifying capacity of the humidifier 106 is set to L tap, M tap, and H tap in ascending order, and the H tap is selected in the first humidifying operation and the second humidifying operation during the washing operation.

(Step S523)
The control unit 8 determines in step S523 whether or not an operation for reducing the humidifying capacity of the humidifier 106 has been performed. The operation of reducing the humidifying capacity of the humidifier 106 also includes an operation of stopping the operation of the humidifier 106.

When the control unit 8 determines that an operation for reducing the humidifying capacity of the humidifier 6 has been performed, the control unit 8 proceeds to step S524. If the control unit 8 does not determine that the operation for reducing the humidifying capacity of the humidifier 6 has been performed, the control unit 8 proceeds to step S525.

(Step S524)
In step S524, the control unit 8 states that "the washing operation is in progress, the washing operation and the humidifying operation of the humidifier 106 are linked, and it is necessary to restore the humidifying capacity of the humidifier 106 to the original state." Is notified via the display screen 15a of the remote controller 15 or the speaker 82. For example, an operation of reducing the humidifying capacity of the humidifier 6 from the H tap to the L tap without noticing that the indoor heat exchanger 21 is being washed by the air conditioner 10, or the humidifier 6 When the operation of stopping the operation is performed, the control unit 8 promotes the recovery of the humidifying capacity via the display screen 15a of the remote controller 15 or the speaker 82.

(Step S525)
In step S525, the control unit 8 determines whether or not there is a stop command for the washing operation. This is because the user may want to stop the washing operation, and in such a case, it is necessary to forcibly end the washing operation even during the humidifying operation.

The control unit 8 proceeds to step S526 when there is a stop command for the cleaning operation.

(Step S526)
The control unit 8 stops the washing operation in step S526. The control unit 8 may notify the stop of the washing operation via a communication terminal 230 such as a smartphone or a remote controller 15.

As described above, in the first humidifying operation of step S32A and the second humidifying operation of step S32B of FIG. 7, the controls of steps S521 to S525 are executed, and the decrease in the humidifying capacity of the humidifier 6 is suppressed. ..

<Third Embodiment>
In the second embodiment, as shown in FIG. 11, the humidifier 106 is instructed to operate by the indoor control unit 81 of the air conditioner 10 via the wireless LAN router 210 and the wireless LAN adapter 85. Met.

In the third embodiment, the cleaning operation when the air conditioner 10 is not linked with the humidifier will be described.

Since it is unclear what kind of humidifier the user will use, here we assume a humidifier 206 that has only a humidifier function.

(1) Cleaning operation FIG. 17 is a flowchart for explaining the operation of the indoor air conditioning system 1 according to the third embodiment. Hereinafter, the cleaning operation will be described with reference to the flowchart of FIG. When the washing operation is started, the control unit 8 is instructed to start the washing operation (in the case of manual start), and the control unit 8 automatically determines the start of the washing operation (automatically). In case of start).

The indoor air conditioning system 1 of the third embodiment corresponds to both the case of manual start and the case of automatic start. However, the indoor air conditioning system 1 can also be configured to support either the manual start case or the automatic start case.

(Step S101)
In step S101, the control unit 8 determines whether or not there is an instruction for cleaning operation. When the control unit 8 determines that there is an instruction for the cleaning operation, the control unit 8 proceeds to step S102.

If the control unit 8 determines that there is no instruction for cleaning operation, the control unit 8 proceeds to step S111.

(Step S102)
In step S102, the control unit 8 controls the motor 27m so as to open the horizontal flap 27 and fix it at a predetermined angle in order to start the cleaning operation. The angle of the horizontal flap 27 is preferably an angle at which the air blown from the indoor unit 2 does not directly hit the person even if there is a person in the room RM.

Further, the control unit 8 controls the discharge unit 29 so as to start the streamer discharge. If the horizontal flap 27 has already been opened before the processing of step S102, it is maintained. Further, before the process of step S102, when the streamer discharge has already started, the state in which the streamer discharge is being performed is maintained. The streamer discharge ends when the cleaning operation ends.

(Step S103)
In step S103, the control unit 8 determines whether or not the humidity of the air in the room RM has reached a predetermined humidity. The control unit 8 determines that the indoor humidity value has reached the predetermined value AH1 (predetermined humidity) not only when the indoor humidity value is the predetermined value AH1 but also when the indoor humidity value exceeds the predetermined value AH1. do. As the humidity, absolute humidity may be used, but relative humidity may be used instead. When substituting with relative humidity, the detected value of relative humidity may be adjusted according to the atmospheric temperature, if necessary.

When the control unit 8 determines that the humidity in the room has reached the predetermined value AH1, the control unit 8 proceeds to step S104.

If the control unit 8 determines that the humidity in the room has not reached the predetermined value AH1, the control unit 8 proceeds to step S131.

(Step S104)
Next, the control unit 8 starts the cleaning operation in step S104. In the case of the first embodiment and the second embodiment, the

humidifiers

6 and 106 have stopped the humidifying operation in the cleaning operation, but in the case of the third embodiment, the humidifier 206 cannot be controlled. It only gives the notification "Please stop the operation of the humidifier 206."

In the cleaning operation, the air conditioner 10 operates the indoor heat exchanger 21 as an evaporator, as in the cooling operation or the dehumidifying operation. The control unit 8 starts counting by the timer 83 from the start of the washing operation.

(Step S105)
Next, in step S105, the control unit 8 determines whether or not the predetermined time tt2 has elapsed since the washing operation was started. When the control unit 8 determines that "a predetermined time tt2 has elapsed since the start of the washing operation", the control unit 8 ends the first dehumidifying operation, proceeds to step S6, and causes the drying operation to be performed.

When the control unit 8 determines that "the predetermined time tt2 has not elapsed since the start of the cleaning operation", the control unit 8 returns to step S104 and continues the cleaning operation.

(Step S106)
The control unit 8 ends the cleaning operation in step S106.

(Step S111)
Steps S101 to S106 are the main flow of operation. On the other hand, if the control unit 8 determines in step S101 that there is no instruction for the cleaning operation, the control unit 8 determines in step S111 whether or not the condition for starting the cleaning operation is satisfied. When the control unit 8 determines that "the condition for starting the cleaning operation is satisfied", the control unit 8 proceeds to step S102. The conditions for shifting to the washing operation in step S111 are described in "(3-3) Conditions for shifting to the washing operation" of the first embodiment.

Further, when the control unit 8 determines that "the condition for starting the cleaning operation is not satisfied", the control unit 8 returns to step S101.

(Step S131)
If the control unit 8 determines in step S103 that the humidity in the room has not reached the predetermined value AH1, the control unit 8 activates the counter in step S131 to set the number of notifications N for prompting humidification. Count.

N = 0 if the process proceeds from step S103 to step S131 in a state where the notification for prompting humidification has not been performed yet.

(Step S132)
Next, in step S133, the control unit 8 determines whether or not the number of times N of the notification for prompting humidification has reached the predetermined number of times X. When the control unit 8 determines that the number of times N of notifications has not reached the predetermined number of times X, the control unit 8 proceeds to step S133.

On the other hand, when the control unit 8 determines that the number of times N of notifications has reached the predetermined number of times X, the control unit 8 proceeds to step S106 to stop the washing operation.

(Step S133)
In step S133, the control unit 8 gives a notification to encourage humidification via the display screen 15a of the remote controller 15 or the speaker 82.

The notification prompting humidification includes a notification prompting "start the humidifier 206 to perform humidification operation" and a notification prompting "operate to increase the humidifying capacity of the humidifier 206".

In the case of the third embodiment, since the humidifier 206 is not interlocked with the air conditioner 10, the control unit 8 cannot grasp whether or not the humidifier 206 is operating.

Therefore, as the specific content of the notification, assuming that the humidifier 206 is stopped, the message A "Since the cleaning operation is performed, please humidify with the humidifier." Is notified. It is also good.

Also, assuming that the humidifier 206 is operating but the humidifying capacity is low, the message B "Please increase the humidifying capacity of the humidifier because the cleaning operation is performed" may be notified.

Furthermore, assuming that the humidifier 206 is operating but the user lowers the humidifying capacity, the message C "Please restore the humidifying capacity of the humidifier because the cleaning operation is performed." Is notified. You may. Further, the messages A, B, and C may all be notified.

(Step S134)
Next, in step S134, the control unit 8 determines whether or not a predetermined time ts1 has elapsed since the notification for prompting humidification was performed. When the control unit 8 determines that the predetermined time ts1 has elapsed, the control unit 8 proceeds to step S103.

Here, the notification waits for the elapse of the predetermined time ts1 with the expectation that the user is performing the humidification operation by the humidifier 206. Then, it is determined by returning to step S103 whether or not the humidification operation is actually performed.

As described above, the control unit 8 repeats the routine of notifying the humidification prompt and waiting for the lapse of the predetermined time ts1 N times, and if the humidity in the room still does not reach the predetermined value AH1, the control unit 8 is the control unit. Reference numeral 8 presumes that the humidifier 206 is in a stopped state, and stops the washing operation.

The control unit 8 may notify the stop of the washing operation via a communication terminal 230 such as a smartphone or a remote controller 15.

<Other embodiments>
In the cleaning operation described in the first, second and third embodiments, the indoor heat exchanger 21 functions as an evaporator and the moisture contained in the indoor air is condensed in the indoor heat exchanger 21 to condense the indoor heat exchanger 21. The explanation is based on the assumption that the dirt adhering to the surface of the surface is washed away.

However, the cleaning operation is not limited to this, and the cleaning operation includes an operation of performing a freezing operation in which the surface temperature of the indoor heat exchanger 21 is set below the freezing point, and thawing after the freezing operation is completed to clean the indoor heat exchanger. Is done.

<Characteristics>
(1)
In the indoor air conditioning system 1, the control unit 8 controls to restore the capacity of the

humidifiers

6, 106, 106 when an operation of reducing the humidification capacity of the

humidifiers

6, 106, 206 is performed, or a remote controller. The display screen 15a of 15 or the speaker 82 is controlled to give a notification urging the humidifiers 106 and 206 to recover their humidifying capacity. As a result, even if the user stops the

humidifiers

6, 106, 206, the humidity required for the washing operation is performed by restarting the

humidifiers

6, 106 or giving a notification prompting the restart of the humidifiers 106, 206. Can be secured.

(2)
In the indoor air conditioning system 1, the control unit 8 controls to restore the humidifying capacity of the humidifier by remote control when the humidifying capacity of the

humidifiers

6 and 106 is reduced. As a result, the decrease in humidity is avoided.

(3)
In the indoor air conditioning system 1, the control unit 8 determines whether or not an operation has been performed that reduces the humidifying capacity of the

humidifiers

6, 106, 206 based on the detection value of the indoor humidity sensor 32. When the control unit 8 determines that the humidifying capacity of the

humidifiers

6, 106, 206 is reduced, the control unit 8 controls the display screen 15a of the remote controller 15 or the speaker 82 to control the

humidifiers

6, 106, 206. A notification is given to encourage the restoration of the humidifying capacity of the. As a result, it is possible to prevent a decrease in humidity.

(4)
In the indoor air conditioning system 1, the control unit 8 operates the

humidifiers

6 and 106 by taking measures to suppress the decrease in capacity (for example, preventing the humidifier from being stopped by normal operation) during the cleaning operation. However, it is possible to prevent the humidity from dropping due to the shutdown of the

humidifiers

6 and 106 while the indoor heat exchanger 21 is being washed.

(5)
In the indoor air conditioning system 1, the control unit 8 notifies that the cleaning operation and the humidifying operation of the

humidifiers

6, 106, 206 are linked as a measure for suppressing the decrease in capacity. As a result, the user is prevented from stopping the humidifier.

(6)
In the indoor air conditioning system 1, the humidifier 106 has an operation restriction function of canceling an input other than a predetermined operation. The control unit 8 enables the operation restriction function of the humidifier 106 by remote control as a measure for suppressing the decrease in capacity. As a result, operations such as stopping the humidifier 106 that lower the humidifying capacity are prevented, and a decrease in humidity is avoided.

The predetermined operation is an operation in which the first button 116 of the plurality of operation buttons is pressed longer than usual, or an operation in which the first button 116 is pressed twice or more.

(7)
In the indoor air conditioning system 1, the control unit 8 stops the washing operation when the stop of the

humidifiers

6, 106, 206 is detected or estimated. This is because the cleaning operation in a low humidity condition cannot be expected to be effective.

(8)
In the indoor air conditioning system 1, the control unit 8 notifies the stop of the washing operation due to the stop of the

humidifiers

6, 106, 206 via the communication terminal or the remote controller 15.

Although the embodiments of the present disclosure have been described above, it will be understood that various modifications of the embodiments and details are possible without departing from the spirit and scope of the present disclosure described in the claims. ..

1 Indoor air conditioning system 2 Indoor unit (air conditioning indoor unit)
6 Humidifier 8 Control unit 15a Display screen (notification unit)
21 Indoor heat exchanger 32 Indoor humidity sensor (humidity sensor)
82 Speaker (notification unit)
106 Humidifier 116 1st button (predetermined operation button)
172 Indoor humidity sensor (humidity sensor)
206 Humidifier

Japanese Unexamined Patent Publication No. 2010-014288

Claims

An air-conditioning indoor unit that performs a cleaning operation in which the indoor heat exchanger (21) functions as an evaporator and the moisture contained in the indoor air is condensed in the indoor heat exchanger (21) to clean the indoor heat exchanger (21). (2) and
A humidifier (6) that humidifies the room,
Control unit (8) and
Notification unit (82) and
Equipped with
The control unit (8) recovers the capacity of the humidifier (6) when an operation of reducing the humidifying capacity of the humidifier (6) is performed when the washing operation is instructed. A notification is performed to urge the humidifier (6) to recover the humidifying capacity by controlling or controlling the notification unit (82).
Indoor air conditioning system (1).
The control unit (8) has a remote control function for remotely controlling the humidifier (6).
The control unit (8) controls to restore the humidifying capacity of the humidifier (6) by remote control when an operation is performed such that the humidifying capacity of the humidifier (6) is reduced.
The indoor air conditioning system (1) according to claim 1.
Further equipped with a humidity sensor (32)
Based on the detection value of the humidity sensor (32), the control unit (8) determines whether or not an operation has been performed so as to reduce the humidifying capacity of the humidifier (6).
The control unit (8) controls the notification unit (82) to control the humidifying capacity of the humidifier (6) when it is determined that the humidifying capacity of the humidifier (6) is reduced. Make a notification to urge you to recover
The indoor air conditioning system (1) according to claim 1.
An air-conditioning indoor unit that performs a cleaning operation by making the indoor heat exchanger (21) function as an evaporator and condensing the moisture contained in the indoor air into the indoor heat exchanger (21) to clean the indoor heat exchanger (21). 2) and
A humidifier (6) that humidifies the room,
Control unit (8) and
Equipped with
The control unit (8) takes measures to suppress the decrease in the humidifying capacity of the humidifier (6) during the cleaning operation as compared with the case where the cleaning operation is not performed.
Indoor air conditioning system (1).
The control unit (8) notifies that the washing operation and the humidifying operation of the humidifier (6) are linked as the capacity reduction suppressing measure.
The indoor air conditioning system (1) according to claim 4.
The control unit (8) has a remote control function for remotely controlling the humidifier (6).
The humidifier (6) has an operation restriction function of restricting inputs other than predetermined operations.
The control unit (8) enables the operation restriction function of the humidifier (6) by remote control as a measure for suppressing the decrease in capacity.
The indoor air conditioning system (1) according to claim 4.
The humidifier (6) has a plurality of operation buttons and has a plurality of operation buttons.
The predetermined operation is an operation of pressing a predetermined operation button among the plurality of operation buttons longer than usual, or an operation of pressing the predetermined operation button twice or more.
The indoor air conditioning system (1) according to claim 6.
When the control unit (8) detects or estimates that the humidifier (6) has stopped, the washing operation is stopped.
The indoor air conditioning system (1) according to any one of claims 1 to 7.
The control unit notifies the stop of the washing operation due to the stop of the humidifier (6) via a communication terminal or a remote control device.
The indoor air conditioning system (1) according to any one of claims 1 to 8.