WO2023013582A1

WO2023013582A1 - Air-conditioning indoor unit

Info

Publication number: WO2023013582A1
Application number: PCT/JP2022/029499
Authority: WO
Inventors: 幸子松本
Original assignee: ダイキン工業株式会社
Priority date: 2021-08-06
Filing date: 2022-08-01
Publication date: 2023-02-09
Also published as: JP2023024123A; CN117769631A; JP7168891B1; JP2023024426A

Abstract

The present invention suppresses the influence of changes in the condition of outside air on an electrostatic atomization unit. An air-conditioning indoor unit (2) comprises a casing (23) and an electrostatic atomization unit (75). The casing (23) has an air supply channel (R1) through which outside air, which is outdoor air, flows. The electrostatic atomization unit (75) emits liquid particles containing ions generated by electrical discharge. The electrostatic atomization unit (75) is disposed outside the air supply channel (R1).

Description

air conditioning indoor unit

　Regarding air conditioning indoor units that perform indoor air conditioning.

Air conditioning indoor units equipped with electrostatic atomization units have been known for some time. For example, as described in Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2014-20578), an electrostatic atomization unit of an air conditioner indoor unit generates liquid particles containing ions by electric discharge. The electrostatic atomization unit emits liquid particles containing ions into the room through an outlet of an air conditioner indoor unit.

The air conditioning indoor unit described in Patent Document 1 does not have the function of taking in outside air. When an electrostatic atomization unit is provided in an air conditioner indoor unit that has a function of taking outside air into the room, it is necessary to take measures to prevent the electrostatic atomization unit from being damaged by the outside air.

The air conditioning indoor unit of the first aspect is an air conditioning indoor unit that performs indoor air conditioning, and includes a casing and an electrostatic atomization unit. The casing has an air supply channel through which outside air, which is outdoor air, flows. The electrostatic atomization unit is a unit that emits liquid particles containing ions by electric discharge. The electrostatic atomization unit is arranged outside the air supply channel.

In the air conditioner indoor unit of the first aspect, the electrostatic atomization unit is arranged outside the air supply passage through which the outside air flows, so that the change in the outside air condition, especially the high humidity outside air, is applied to the electrostatic atomization unit. The impact can be suppressed.

The air conditioning indoor unit according to the second aspect is the air conditioning indoor unit according to the first aspect, and the air supply passage is arranged on one end side of the casing in the longitudinal direction. The electrostatic atomization unit is arranged inside the casing and on the other longitudinal end side.

The air conditioning indoor unit of the second aspect has a simple configuration in which the air supply passage is arranged on one end side in the longitudinal direction and the electrostatic atomization unit is arranged on the other end side, and changes in the state of the outside air are applied to the electrostatic atomization unit. The impact can be suppressed.

The air conditioning indoor unit according to the third aspect is the air conditioning indoor unit according to the second aspect, and includes an electrical component box arranged in the casing and extending in the longitudinal direction. The electrical component box has a first electrical component room containing a first electrical circuit component driven by a voltage of less than 50 volts on one end side, and a second electrical circuit driven by a voltage of 50 volts or more on the other end side. It has a second electrical compartment that houses components.

In the air conditioning indoor unit of the third aspect, the second electrical component room of the electrical component box is provided at one end in the longitudinal direction where the electrostatic atomization unit is arranged, so that the distance from the second electrical component room to the electrostatic atomization unit is increased. The wiring distance can be shortened, and countermeasures against voltages of 50 volts or more can be easily taken.

The air conditioner indoor unit of the fourth aspect is the air conditioner indoor unit of any one of the first to third aspects, and includes a fan arranged inside the casing. The casing has an air inlet for sucking room air from the room, an air outlet for blowing air into the room, and a ventilation path connecting the air inlet and the air outlet. The fan generates an airflow from the suction port toward the blowout port through the ventilation passage. The electrostatic atomization unit takes in air from a space other than the air passage for ejecting the liquid particles.

In the air conditioning indoor unit of the fourth aspect, since the electrostatic atomization unit takes in air for discharging the liquid particles from a space other than the ventilation passage, the influence of changes in the state of the outside air on the electrostatic atomization unit is reduced. can do.

The air conditioning indoor unit according to the fifth aspect is the air conditioning indoor unit according to the fourth aspect, and is provided with a heat exchanger arranged in the ventilation passage in the casing for exchanging heat between the indoor air and the outside air and the heat medium. . The air supply channel includes an air supply member having a blowout opening for blowing outside air, and is arranged such that the blowout opening faces the heat exchanger.

In the air conditioning indoor unit of the fifth aspect, the outlet of the air supply member is opposed to the heat exchanger, so that it is possible to prevent problems such as dew condensation caused by outside air coming into contact with other parts of the casing. can.

The air conditioner indoor unit of the sixth aspect is the air conditioner indoor unit of any one of the first aspect to the fifth aspect, and includes a control device that controls the electrostatic atomization unit. The controller controls the electrostatic atomization unit so as not to discharge when outside air is introduced into the room.

In the air conditioning indoor unit of the sixth aspect, the electrostatic atomization unit is prevented from being affected by outside air when the outside air is introduced into the room by preventing discharge from occurring in the electrostatic atomization unit when the outside air is introduced into the room. can be done.

The air conditioner indoor unit of the seventh aspect is the air conditioner indoor unit of any one of the first to sixth aspects, and the air supply channel is a channel for supplying humidified outside air.

In the air conditioning indoor unit of the seventh aspect, even when humidified outside air flows through the air supply passage, the electrostatic atomization unit is placed in a position away from the air supply passage through which the outside air flows, so that the humidity of the outside air is kept quiet. The influence on the electro-atomization unit can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows the air conditioner containing the air-conditioning indoor unit which concerns on embodiment. It is a sectional view of an air-conditioning indoor unit concerning an embodiment. It is an exploded perspective view of an air-conditioning indoor unit concerning an embodiment. FIG. 2 is a diagram for explaining a refrigerant circuit and an air flow path included in the air conditioning system of FIG. 1; (a) It is the partially broken plan view which fracture|ruptured a part of air-conditioning indoor unit which concerns on embodiment. (b) It is the partially broken front view which fracture|ruptured a part of air-conditioning indoor unit which concerns on embodiment. Fig. 3 is a schematic cross-sectional view of the air conditioner indoor unit for explaining the arrangement position of the electrostatic atomization unit according to the embodiment; It is a front view which shows the external appearance of a humidification duct. It is a side view which shows the external appearance of a humidification duct. It is a rear view which shows the external appearance of a humidification duct. FIG. 8 is a cross-sectional view of the humidifying duct cut along line II of FIG. 7; It is a schematic diagram which shows the outline|summary of a structure of an electrostatic atomizer. Fig. 2 is a schematic cross-sectional view showing the outline of the configuration of the electrostatic atomization unit; (a) It is the partially broken plan view which fracture|ruptured the part of air-conditioning indoor unit which concerns on a modification. (b) It is the partially broken front view which fracture|ruptured a part of air-conditioning indoor unit which concerns on a modification. FIG. 5 is a schematic cross-sectional view of an air conditioning indoor unit for explaining the arrangement position of an electrostatic atomization unit according to a modification;

(1) Outline of Configuration of Air Conditioning System (1-1) Outline of Overall Configuration of Air Conditioning System As shown in FIG. The air conditioning system 1 includes an air conditioning indoor unit 2 , an air conditioning outdoor unit 4 and a humidifier 6 . In the following description, the expressions "top", "bottom", "front", and "back" shown in FIGS. 1, 2 and 6 are used to describe the direction of each arrow. There is Further, in FIGS. 4 and 6, thick arrows indicate the flow of air. The operation modes of the air conditioning system 1 include, for example, a cooling operation, a heating operation, a dehumidifying operation, a humidifying operation, an air blowing operation, a ventilation operation, and an air cleaning operation. The air conditioning system 1 includes a controller 8 that controls the air conditioning indoor unit 2 and the humidifier 6, as shown in FIG.

The air conditioning indoor unit 2 is installed in the room RM (see FIG. 1) and performs air conditioning in the room RM (indoor). As shown in FIGS. 1 and 4 , the air conditioning indoor unit 2 is included in the air conditioner 10 of the air conditioning system 1 . The air conditioner 10 includes an air conditioner indoor unit 2 and an air conditioner outdoor unit 4 . The air conditioner indoor unit 2 and the air conditioner outdoor unit 4 are connected by

refrigerant communication pipes

11 and 12 . The air conditioning indoor unit 2 , the air conditioning outdoor unit 4 , and the

refrigerant communication pipes

11 and 12 form a refrigerant circuit 13 . The air conditioning system 1 can perform, for example, a cooling operation, a heating operation, a dehumidification operation, a ventilation operation, and an air cleaning operation by using the air conditioning indoor unit 2 and the air conditioning outdoor unit 4 (air conditioner 10) without using the humidifier 6. can drive. In the refrigerant circuit 13, for example, the vapor compression refrigeration cycle is repeated during cooling operation, heating operation, and dehumidification operation. The air conditioning indoor unit 2 and the air conditioning outdoor unit 4 are controlled by the control unit 8 .

In this embodiment, the case where the air conditioning indoor unit 2 is attached to the wall WL of the room RM will be described. However, the type of the air conditioning indoor unit 2 is not limited to the type installed on the wall WL of the room RM. The air conditioner indoor unit 2 may be installed, for example, on the ceiling CI or the floor FL.

The air conditioner indoor unit 2 has a heat exchanger 21 as shown in FIG. The air conditioner indoor unit 2 performs heat exchange of the air by passing the air through the heat exchanger 21 . The heat exchanger 21 has a plurality of heat transfer fins 21a and a plurality of heat transfer tubes 21b. In the heat exchanger 21, air passes between the heat transfer fins 21a. During heat exchange, the air passes through the heat transfer fins 21a and the refrigerant flows through the heat transfer tubes 21b. The refrigerant flowing through the heat transfer tubes 21b is a kind of heat medium. The heat transfer tube 21b is thermally connected to the plurality of heat transfer fins 21a so as to be folded back a plurality of times and penetrate each heat transfer fin 21a a plurality of times.

By using the humidifier 6 shown in FIGS. 1 and 4 together with the air conditioning indoor unit 2 and the air conditioning outdoor unit 4, the air conditioning system 1 can perform, for example, humidification operation and ventilation operation. In other words, the air-conditioning indoor unit 2 of the air-conditioning system 1 configured as described above can perform operations corresponding to, for example, cooling operation, heating operation, dehumidification operation, humidification operation, ventilation operation, ventilation operation, and air cleaning operation. be. The humidifier 6 has an air supply/exhaust hose 68 that communicates with the room via the air conditioning indoor unit 2 . The air conditioning indoor unit 2 can humidify the room by increasing the humidity in the room RM with the moisture supplied into the room RM through the air supply/exhaust hose 68 by the humidifier 6 . In addition, the air conditioning indoor unit 2 can ventilate the room RM with the outside air supplied into the room RM (inside the room) through the air supply/exhaust hose 68 by the humidifier 6 . The ambient air described in this disclosure is outdoor OD air.

The control unit 8 of the air conditioning system 1 includes a control device 81 that controls the air conditioning indoor unit 2 and an outdoor control plate 82 that controls the air conditioning outdoor unit 4 and the humidifier 6 . The control device 81 and the outdoor control board 82 are controllers implemented by, for example, microcomputers. For example, the control device 81 includes a timer 81a, a control arithmetic device 81b, and a storage device 81c. A processor such as a CPU or GPU can be used for the control arithmetic unit 81b. The control arithmetic device 81b reads a program stored in the storage device 81c, and performs, for example, predetermined sequence processing and arithmetic processing according to this program. Furthermore, the control arithmetic device 81b can write the arithmetic result to the storage device 81c and read the information stored in the storage device 81c according to the program.

(1-2) Arrangement of Electrostatic Atomization Unit of Air Conditioner Indoor Unit The air conditioner indoor unit 2 includes an electrostatic atomization unit 75 shown in FIG. The electrostatic atomization unit 75 is a device that emits liquid particles containing ions by electric discharge. The electrostatic atomization unit 75 is arranged outside the air supply passage R1 shown in FIG. Arranging the electrostatic atomization unit 75 outside the air supply passage R1 means that the air flowing through the air supply passage R1 does not flow to the electrostatic atomization unit 75 . The air supply flow path R1 is a flow path through which outside air can flow. Another flow path R2, which is a flow path other than the air supply flow path R1, is a flow path through which outside air does not flow. The electrostatic atomization unit 75 is arranged at a place other than the air supply channel R1 and the other channel R2 that constitute the ventilation channel FP. In other words, the air does not directly flow into the electrostatic atomization unit 75 from the ventilation path FP.

The air conditioning indoor unit 2 includes a casing 23. The casing 23 of the air conditioning indoor unit 2 described here has a frame 23f, a grille 23g, and a front panel 23p, as shown in FIG. The configuration of the casing 23 of the air conditioning indoor unit 2 is not limited to the configuration described here. For example, the front panel 23p and the grille 23g may be integrated. This casing 23 extends long along the longitudinal direction D1. One end E1 of the casing 23 in the longitudinal direction D1 is on the left when the casing 23 is viewed from the front, and the other end E2 of the casing 23 in the longitudinal direction D1 is on the right when the casing 23 is viewed from the front. In the present disclosure, the side closer to the one end E1 than the center CE in the longitudinal direction D1 of the casing 23 is called the one end side, and the side closer to the other end E2 than the center CE is called the other end side. In other words, the area between the center CE of the casing 23 and the one end E1 is the one end side, and the area between the center CE and the other end E2 is the other end side. Outside air is supplied to one end by an air supply/exhaust hose 68 . As a result, one end of the casing 23 in the longitudinal direction D1 becomes the air supply passage R1. In FIG. 4 , the flow of outside air is indicated by a thick dashed-dotted arrow. Since the outside air is not supplied from the air supply/exhaust hose 68 to the other end side of the casing 23 in the longitudinal direction D1, this other end side becomes a flow path R2 other than the air supply flow path.

(2) Detailed configuration (2-1) Air conditioning indoor unit As shown in FIGS. 2, 4 and 6, the air conditioning indoor unit 2 includes a heat exchanger 21, a fan 22, a casing 23, Equipped with a filter 24, a drain pan 26, a horizontal flap 27, a vertical flap (not shown), a humidification duct 28, and an electrostatic atomizer 70 (see FIG. 11) including an electrostatic atomizer unit 75. there is The air conditioning indoor unit 2 also includes an indoor temperature sensor 31 and an indoor humidity sensor 32 . The indoor temperature sensor 31 and the indoor humidity sensor 32 are connected to the controller 81 .

The casing 23 has a suction port 23a at its top and a blowout port 23b at its bottom. The air conditioner indoor unit 2 drives the fan 22 to suck in the indoor air from the suction port 23a, and blows out the air that has passed through the heat exchanger 21 from the blowout port 23b. In the casing 23, the airflow path connecting the suction port 23a and the blowout port 23b is the ventilation path FP. The fan 22 is arranged in a substantially central portion within the casing 23 in a cross-sectional view of the air conditioning indoor unit 2 (see FIG. 2). A cross-flow fan is used for the fan 22 . The fan 22 has blades extending along the longitudinal direction D1 and generates an air flow in a direction perpendicular to the longitudinal direction D1.

The heat exchanger 21 is arranged upstream of the fan 22 in the ventilation passage FP from the suction port 23a to the blowout port 23b. The heat exchanger 21 has a downwardly open shape so as to cover the upper side of the fan 22 when viewed in the direction in which the heat transfer tubes 21b extend (when viewed from the side). Here, such a shape is called a Λ shape or a C shape. The heat exchanger 21 has a first heat exchange section 21F far from the wall WL and a second heat exchange section 21R close to the wall WL. A drain pan 26 is arranged under the lower portion of the first heat exchange portion 21F and the lower portion of the second heat exchange portion 21R of the Λ-shaped or C-shaped heat exchanger 21 . Condensation generated in the first heat exchange section 21F of the heat exchanger 21 is received by the drain pan 26 arranged in the lower front portion of the heat exchanger 21 . Condensation generated in the second heat exchange section 21R of the heat exchanger 21 is received by the drain pan 26 arranged in the lower rear portion of the heat exchanger 21 .

A horizontal flap 27 and a vertical flap are arranged at the outlet 23b. The horizontal flap 27 vertically changes the direction of the air blown from the outlet 23b. Therefore, the horizontal flap 27 is configured so that the angle formed with the horizontal direction can be changed by a motor 27m. The vertical flap is configured to be able to change the direction of the air blown out from the outlet 23b to the left or right. The air conditioning indoor unit 2 drives, for example, a vertical flap with a motor (not shown) so as to change the angle formed with the front-rear direction.

An air filter 24 is arranged downstream of the suction port 23 a in the casing 23 and upstream of the heat exchanger 21 . Substantially all of the room air supplied to the heat exchanger 21 passes through the air filter 24 . Therefore, dust particles larger than the mesh of the air filter 24 are removed by the air filter 24 and do not reach the heat exchanger 21 .

The air conditioning indoor unit 2 includes a humidification duct 28 as an air supply member inside the casing 23 . As shown in FIG. 5, the humidification duct 28 is arranged on one end side of the casing 23 in the longitudinal direction D1 and is included in the air supply flow path R1 formed on the one end side of the casing 23 . In humidification duct 28, outlet opening 28a is arranged to face heat exchanger 21 (see FIG. 6). Outside air is blown out from the humidification duct 28 when the air conditioning indoor unit 2 is performing the ventilation operation. During the ventilation operation, the humidifying operation in the humidifier 6 is stopped, and outside air is sent from the humidifier 6 through the air supply/exhaust hose 68 to the humidification duct 28 as it is. Humidified outside air is blown out from the humidification duct 28 when the air conditioning indoor unit 2 is performing the humidification operation. During humidification operation, humidification operation is performed in the humidifier 6 , and humidified outside air is sent from the humidifier 6 to the humidification duct 28 through the air supply/exhaust hose 68 . The humidification duct 28 is provided with a duct filter 28b. Outside air sent through the air supply/exhaust hose 68 is blown out into the casing 23 through the duct filter 28b.

The electrostatic atomization device 70 (see FIG. 11) including the electrostatic atomization unit 75 is arranged outside the air supply passage R1. In the example shown in FIGS. 3-6, an electrostatic atomizer 70 including an electrostatic atomizer unit 75 is arranged within the casing 23 . The electrostatic atomizer 70 including the electrostatic atomizer unit 75 is arranged on the other end side of the casing 23 in the longitudinal direction D1. In the air conditioner indoor unit 2, the electrostatic atomization device 70 is arranged on the other end side of the casing 23, so that the electrostatic atomization unit 75 is arranged outside the air supply passage R1. More specifically, the electrostatic atomizer 70 including the electrostatic atomizer unit 75 is arranged outside the air supply channel R1 and the other channel R2. The electrostatic atomization device 70 including the electrostatic atomization unit 75 takes in air for ejecting liquid particles from a space other than the ventilation path FP. In this air conditioner indoor unit 2, as shown in FIG. 6, an electrostatic atomizer 70 including an electrostatic atomizer unit 75 sprays liquid particles from a space IS inside the casing 23 other than the air passage FP. It takes in air to let it out. This space IS is a space in the casing 23 near the other end E2. The other end E2 of the casing 23 is the right side surface of the casing 23 .

The control device 81 arranged in the air conditioning indoor unit 2 is connected to the motor 22m of the fan 22 and the motor 27m of the horizontal flap 27, as shown in FIG. The control device 81 can control the number of rotations of the motor 22m of the fan 22 and the rotation angle of the motor 27m of the horizontal flap. The control device 81 is connected to an outdoor control plate 82 (see FIG. 4) arranged inside the air conditioner outdoor unit 4 . Here, a case where the control device 81 has a timer 81a, a control arithmetic device 81b, and a storage device 81c will be described. It may be provided in place. For example, the timer 81a, the control arithmetic device 81b, and the storage device 81c may be provided on the outdoor control board 82. FIG. The control device 81 can detect the temperature of the indoor air with the indoor temperature sensor 31 and the relative humidity of the indoor air with the indoor humidity sensor 32 . The controller 81 can set the on/off timing of the electrostatic atomizer 70 using the timer 81a.

The air conditioning indoor unit 2 has an electrical component box 90 arranged in the casing 23 and extending in the longitudinal direction D1 (see FIG. 3). In the air conditioner indoor unit 2 , the control device 81 is housed in the first electrical component room 91 (see FIG. 5 ) of the electrical component box 90 . The first electrical equipment chamber 91 is arranged on one end side of the casing 23 . The first electrical equipment compartment 91 is a space in which a first electrical circuit component driven by a voltage of less than 50 volts is accommodated. The first electrical circuit component includes an electrical circuit component that constitutes the control device 81 . The electrical component box 90 has a second electrical component room 92 on the other end side. The second electrical equipment room 92 is a space in which second electrical circuit components driven by a voltage of 50 volts or higher are accommodated. The second electrical circuitry includes electrical circuitry for powering the electrostatic atomization unit 75 . The second electrical equipment chamber 92 is arranged on the other end side of the casing 23 . Since the second electrical compartment 92 is arranged on the other end side, the wiring distance from the second electrical compartment 92 to the electrostatic atomization unit 75 can be shortened.

(2-1-1) Humidification Duct As shown in FIGS. 7, 8, 9 and 10, the humidification duct 28 includes a blowout opening 28a, a duct filter 28b, a wide portion 28c, a connection portion 28d, and a feeder. It has an air opening 28e. A supply/exhaust hose 68 is connected to the cylindrical connecting portion 28d. Outside air flows through the air supply/exhaust hose 68 from the air supply opening 28e at the tip of the connection portion 28d. A wide portion 28c that is wider in the longitudinal direction D1 (horizontal direction) than the connecting portion 28d is arranged downstream of the connecting portion 28d. A duct filter 28b is detachably attached to the wide portion 28c. By opening the front panel 23p of the air conditioning indoor unit 2, the duct filter 28b can be pulled out from the casing 23 forward. A blowout opening 28a is formed downstream of the duct filter 28b in the wide portion 28c. Blow-out opening 28 a faces heat exchanger 21 . In the air conditioning indoor unit 2 of the present embodiment, the blowout opening 28a is arranged below the air filter 24, and the outside air blown out from the blowout opening 28a flows into the heat exchanger 21 without passing through the air filter 24. Since the fan 22 generates an air flow in a direction perpendicular to the longitudinal direction D1, the outside air blown out from the humidification duct 28 to one end side of the casing 23 flows through the air supply flow path R1 and then into the other flow path R2. does not flow.

(2-1-2) Electrostatic atomization device The electrostatic atomization unit 75 is arranged in the electrostatic atomization device 70 as shown in FIG. The electrostatic atomizer 70 includes, for example, a housing 71, an inlet 72a, an outlet 72b, a blower 74, and a high-voltage transformer 73. The outlet 72b is connected to the ventilation path FP. A portion to which the discharge port 72b is connected is, for example, a scroll portion connected to the blowout port 23b of the casing 23 in the air passage FP. The intake port 72a sucks the room air from a portion other than the air passage FP in the casing 23 . The electrostatic atomizer 70 includes a blower 74 in the housing 71 so that the air sucked from the suction port 72a passes through the electrostatic atomization unit 75 in the housing 71 and is discharged from the discharge port 72b. It is preferable to have However, if airflow is generated in the housing 71 without the blower 74, the blower 74 may be omitted.

As shown in FIG. 12, the electrostatic atomization unit 75 converts water condensed on the discharge electrode 78 into water fine particles 77 containing ions by discharging and emits the water. A high voltage is applied between the discharge electrode 78 and the counter electrode 79 by the high voltage transformer 73 in order to generate a high voltage discharge at the discharge electrode 78 . Due to the discharge phenomenon that occurs in the discharge electrode 78, the moisture on the discharge electrode 78 turns into nanometer-sized fine particles and is charged, generating electrostatic mist.

The electrostatic atomization unit 75 is equipped with, for example, a cooling element 76 in order to generate condensed water on the discharge electrode 78 . The cooling element 76 has a heat dissipation surface 76a and a cooling surface 76b. For example, a heat dissipation portion 76c is thermally connected to the heat dissipation surface 76a. A heat radiation fin, for example, can be used for the heat radiation portion 76c. The cooling surface 76b is thermally connected to the discharge electrode 78 via an electrical insulator (not shown). The discharge electrode 78 installed upright on the cooling surface 76b is arranged at a predetermined distance from the counter electrode 40. As shown in FIG. The cooling element 76 is, for example, a Peltier element. A plurality of cooling elements 76 may be provided. When the cooling element 76 is a Peltier element, when a direct current is passed through the Peltier element, the cooling surface 76b absorbs heat and the heat radiation surface 76a generates heat. The temperature of electrode 78 decreases. When the temperature of the discharge electrode 78 falls below the dew point temperature of the air sucked from the suction port 72a, dew condensation occurs on the discharge electrode 78 . By connecting the discharge electrode 78 to the negative side of the high-voltage transformer 73 and connecting the counter electrode 79 to the positive side of the high-voltage transformer 73, negative ions are generated in the water particles 77, and the electrostatic mist generated by the discharge electrode 78 is negatively charged. do.

(2-2) Air Conditioner Outdoor Unit As shown in FIG. and a housing 47 . Compressor 41 , four-way valve 42 , accumulator 43 , outdoor heat exchanger 44 , outdoor expansion valve 45 and outdoor fan 46 are housed in housing 47 . The housing 47 has a rear opening 47a (see FIG. 4) for sucking outside air and a front opening 47b (see FIGS. 1 and 4) for blowing out air after heat exchange. The rear opening 47 a is arranged on the rear side of the housing 47 . The air conditioner outdoor unit 4 functions as a heat source unit that supplies thermal energy to the air conditioner indoor unit 2 .

The compressor 41 sucks in gas refrigerant, compresses it, and discharges it. The compressor 41 is, for example, a variable capacity compressor whose operating capacity can be changed by adjusting the operating frequency of the motor 41m with an inverter. As the operating frequency increases, the operating capacity of the compressor 41 increases. The four-way valve 42 has four ports. A first port P1 of the four-way valve 42 is connected to a discharge port of the compressor 41 . A second port P2 of the four-way valve 42 is connected to one inlet/outlet of the outdoor heat exchanger 44 . A third port P3 of the four-way valve 42 is connected to the accumulator 43 . A fourth port P4 of the four-way valve 42 is connected to one inlet/outlet of the heat exchanger 21 .

The accumulator 43 is connected between the third port P3 of the four-way valve 42 and the suction port of the compressor 41. The outdoor heat exchanger 44 has the other inlet/outlet connected to one inlet/outlet of the outdoor expansion valve 45 . The outdoor heat exchanger 44 exchanges heat between the refrigerant that has flowed into the inside from one entrance or the other entrance and the outside air. The outdoor expansion valve 45 has the other inlet/outlet connected to the other inlet/outlet of the heat exchanger 21 .

An outdoor control plate 82 that constitutes the control unit 8 is arranged in the air conditioner outdoor unit 4 . The outdoor control plate 82 is connected to the control device 81 . The outdoor control plate 82 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 control unit 8 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 with the outdoor control plate 82 .

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 a heat exchanger 21 . A refrigerant circulates in the refrigerant circuit 13 . Refrigerants include, for example, fluorocarbons such as R32 refrigerant and R410 refrigerant, and carbon dioxide. In the vapor compression refrigerating cycle, the refrigerant is compressed by the compressor 41 and heated, and then radiates heat in the outdoor heat exchanger 44 or the heat exchanger 21 . Also, in the vapor compression refrigeration cycle, the refrigerant is decompressed and expanded by the outdoor expansion valve 45 , and then the refrigerant absorbs heat in the heat exchanger 21 or the outdoor heat exchanger 44 . In the accumulator 43, gas-liquid separation of the refrigerant sucked into the compressor 41 is performed. The four-way valve 42 switches the direction of refrigerant flow in the refrigerant circuit 13 .

(2-3) Humidifier 6
The humidifier 6 of this embodiment is integrated with the air conditioner outdoor unit 4 . However, the humidifier 6 and the air conditioner outdoor unit 4 may be configured as separable separate bodies. The humidifier 6 takes in moisture from outside air. The humidifier 6 can generate high-humidity air by applying the taken-in moisture to the outside air. The humidifier 6 sends this high-humidity air to the air conditioner indoor unit 2 . The air conditioner indoor unit 2 mixes the high-humidity air sent from the humidifier 6 with the indoor air during the humidification operation. The air conditioner indoor unit 2 humidifies the room by blowing out air mixed with high-humidity air into the room RM. The humidifier 6 is controlled by the controller 8 .

The humidifier 6 can also stop the humidification operation and send outside air to the air conditioning indoor unit 2 without humidifying. The air conditioning indoor unit 2 mixes the outside air sent from the humidifier 6 with the indoor air during ventilation operation. The air conditioning indoor unit 2 can supply the outside air to the room by blowing out the air mixed with the outside air into the room RM (inside the room). The humidifier 6 can also stop the humidification operation and exhaust the indoor air from the air conditioning indoor unit 2 to the outdoor OD without humidifying. In the ventilation operation, the air conditioning indoor unit 2 can supply outside air into the room RM and exhaust indoor air in the room RM to the outside OD.

The humidifier 6, as shown in FIG. there is The humidifier 6 also includes an air supply/exhaust hose 68 . As shown in FIGS. 1 and 4 , the housing 69 of the humidifier 6 is attached to the housing 47 of the air conditioner outdoor unit 4 . The humidifier 6 has a housing 69 with an adsorption air outlet 69a, an adsorption air intake 69b, and a humidification air intake 69c.

The adsorption rotor 61 is, for example, a disk-shaped humidity control rotor having a honeycomb structure. The humidity control rotor can be formed, for example, by firing an adsorbent that has the property of adsorbing moisture in the air that comes in contact with it. The adsorbent of the adsorption rotor 61 has the property of desorbing the adsorbed moisture when heated. When unheated air passes through the adsorption rotor 61 of the honeycomb structure, moisture in the air is adsorbed on the adsorption rotor 61 . When the heated air passes through the adsorption rotor 61 of the honeycomb structure, moisture of the adsorption rotor 61 is imparted to the air. The adsorption rotor 61 is rotated by being driven by a motor 61m. The rotation speed of the adsorption rotor 61 can be changed by changing the rotation speed of the motor 61m.

The heater 62 is arranged between the humidifying air intake 69 c and the switching damper 63 . Outside air taken in from the humidifying air intake 69 c passes through the heater 62 and then through the adsorption rotor 61 to reach the switching damper 63 . When the air heated by the heater 62 passes through the adsorption rotor 61 , moisture is desorbed from the adsorption rotor 61 and supplied from the adsorption rotor 61 to the heated outside air. The heater 62 can change its output, and the temperature of the air that has passed through the heater 62 can be changed according to the output. Within a specific temperature range, the adsorption rotor 61 tends to desorb more moisture as the temperature of the air passing through the adsorption rotor 61 increases. By changing the temperature of the heater 62 and the number of rotations of the adsorption rotor 61, the amount of water added to the outside air can be adjusted.

The switching damper 63 has a first entrance 63a and a second entrance 63b. The switching damper 63 can switch between the first inlet/outlet 63a and the second inlet/outlet 63b as the air inlet for sucking air when the air supply/exhaust fan 64 is driven. When the air inlet is the first inlet/outlet 63a, outside air flows from the humidifying air inlet 69c in the direction of the solid arrow in FIG. 1 entrance/exit 63a, air supply/exhaust fan 64, second entrance/exit 63b, duct 66, air supply/exhaust hose 68, and air conditioning indoor unit 2 in this order. When the air inlet is switched to the second inlet/outlet 63b, conversely, the supply/exhaust hose 68, the duct 66, the second inlet/outlet 63b, Air flows through the supply/exhaust fan 64, the first inlet/outlet 63a, the adsorption rotor 61, the heater 62, the adsorption rotor 61, and the humidification air intake 69c in this order. The switching of the switching damper 63 is performed by a motor 63m.

The air supply/exhaust fan 64 is arranged between the first entrance 63 a and the second entrance 63 b of the switching damper 63 . The air supply/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 air supply/exhaust fan 64 is driven by a motor 64m. The air supply/exhaust hose 68 has one end connected to the duct 66 and the other end connected to the air conditioning indoor unit 2 . With such a configuration, the air supply/exhaust hose 68 and the room RM communicate with each other via the air conditioning indoor unit 2 .

An adsorption fan 65 is arranged in a passage leading from the adsorption air intake 69b to the adsorption air outlet 69a, and the adsorption rotor 61 is arranged so as to hang over this passage. When the adsorption fan 65 generates an airflow from the adsorption air intake port 69b toward the adsorption air outlet 69a, the adsorption rotor 61 adsorbs moisture from the outside air passing through the adsorption rotor 61 . The suction fan 65 is driven by a motor 65m.

The motor 61 m of the adsorption rotor 61 , the motor 63 m of the switching damper 63 , the motor 64 m of the air supply/exhaust fan 64 and the heater 62 are connected to the outdoor control plate 82 . The controller 8 can control the number of rotations of the adsorption rotor 61 , the switching of the switching damper 63 , the ON/OFF of the air supply/exhaust fan 64 and the adsorption fan 65 , and the output of the heater 62 using the outdoor control plate 82 .

(3) Operation of Air Conditioning System and Air Conditioning Indoor Units (3-1) Overview Operation modes of the air conditioning system 1 include, for example, cooling operation, heating operation, dehumidification operation, humidification operation, fan operation, ventilation operation, and air cleaning operation. be. Note that a plurality of operations can be combined. For example, heating operation and humidifying operation, cooling operation and humidifying operation, air blowing operation and humidifying operation, ventilation operation and cooling operation, ventilation operation and heating operation, ventilation operation and dehumidifying operation, and ventilation operation and air blowing operation can be combined, An air cleaning operation can be further combined with those combinations.

(3-2) Cooling Operation Before starting the cooling operation, the controller 81 of the control section 8 is instructed to perform the cooling operation and the target temperature from, for example, a remote controller (not shown). During cooling operation, the controller 8 switches the four-way valve 42 to the state indicated by the solid line in FIG. During cooling operation, the four-way valve 42 switched in this way allows 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 cooling operation allows the high-temperature, high-pressure gas refrigerant discharged from the compressor 41 to flow to the outdoor heat exchanger 44 . The outdoor heat exchanger 44 exchanges heat between the refrigerant and the outside air supplied by the outdoor fan 46 . The refrigerant cooled by the outdoor heat exchanger 44 is depressurized by the outdoor expansion valve 45 and flows into the heat exchanger 21 . The heat exchanger 21 exchanges heat between the refrigerant and the air supplied by the fan 22 . The air supplied by the fan 22 may be indoor air alone or indoor air and outdoor air. The refrigerant warmed by heat exchange in the heat exchanger 21 is sucked into the compressor 41 via the four-way valve 42 and the accumulator 43 . The indoor air is cooled by blowing the indoor air cooled by the heat exchanger 21 or the mixed air of the indoor air and the outdoor air from the air conditioning indoor unit 2 to the room RM. In the air conditioner 10, in the cooling operation, the heat exchanger 21 functions as a refrigerant evaporator to cool the room RM, and the outdoor heat exchanger 44 functions as a refrigerant radiator. The controller 8 controls the air conditioning indoor unit 2 and the air conditioning outdoor unit 4 so that the temperature detected by the indoor temperature sensor 31 approaches the target temperature.

(3-3) Heating Operation Before starting the heating operation, the controller 81 of the control section 8 is instructed to perform the heating operation and the target temperature from, for example, a remote controller. During heating operation, the control unit 8 switches the four-way valve 42 to the state indicated by the dashed line in FIG. During heating operation, the four-way valve 42 switched in this way allows the refrigerant to flow between the first port P1 and the fourth port P4, and the refrigerant between the second port P2 and the third port P3. The four-way valve 42 during heating operation allows the high-temperature, high-pressure gas refrigerant discharged from the compressor 41 to flow to the heat exchanger 21 . In the heat exchanger 21, heat is exchanged between the air supplied by the fan 22 and the refrigerant. The air supplied by the fan 22 may be indoor air alone or indoor air and outdoor air. The refrigerant cooled by the heat exchanger 21 is depressurized by the outdoor expansion valve 45 and flows into the outdoor heat exchanger 44 . The outdoor heat exchanger 44 exchanges heat between the refrigerant and the outside air supplied by the outdoor fan 46 . The refrigerant warmed by 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 room is heated by blowing out the indoor air warmed by the heat exchanger 21 or the mixed air of the indoor air and the outside air from the air conditioning indoor unit 2 into the room RM. In the air conditioner 10, in the heating operation, the heat exchanger 21 functions as a refrigerant radiator to warm the room RM, and the outdoor heat exchanger 44 functions as a refrigerant evaporator. The controller 8 controls the air conditioning indoor unit 2 and the air conditioning outdoor unit 4 so that the temperature detected by the indoor temperature sensor 31 approaches the target temperature.

(3-4) Blowing operation Before starting the blowing operation, the control device 81 of the control unit 8 is instructed to operate the blowing operation from, for example, a remote controller. During the blowing operation, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13 . The control unit 8 also stops the operation of the humidifier 6 . In the air blowing operation, there are cases where the target air volume is instructed from the remote controller, and where the air conditioning indoor unit 2 automatically selects the target air volume. The control device 81 controls the motor 22m of the fan 22 so as to achieve the target air volume. For example, the control device 81 is configured so that the rotation speed can be increased in order from the LL tap, which has the lowest rotation speed, to the L tap, the M tap, and the H tap. The controller 8 also stops the operation of the humidifier 6 when the air blowing operation is being performed. In the air blowing operation, the indoor air in the room RM is circulated by the air conditioning indoor unit 2 .

(3-5) Humidification Operation Before the humidification operation is started, the controller 81 of the control section 8 is instructed to perform the humidification operation and the target humidity from, for example, a remote controller. During humidification operation in which only humidification is performed, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13 . However, for example, in the humidification/heating operation, the refrigeration cycle in the refrigerant circuit 13 is also performed at the same time as the humidification operation.

Upon receiving the humidification operation instruction, the control unit 8 first causes the humidifier 6 to dry the air supply/exhaust hose 68 . After the air supply/exhaust hose 68 is dried, the controller 8 causes the humidifier 6 to start the humidification operation. The controller 8 drives the suction fan 65 and controls the suction rotor 61 to rotate. By driving the adsorption fan 65 and passing the outside air through the adsorption rotor 61 , the adsorption rotor 61 adsorbs moisture from the outside air. Due to the rotation of the adsorption rotor 61, the location where moisture is adsorbed moves to a location through which the air heated by the heater 62 passes. As a result, desorption of moisture occurs from the location where moisture has been adsorbed to the heated air. The air that has passed through the adsorption rotor 61 and becomes highly humid is sent to the room RM through the air supply/exhaust hose 68 and the air conditioning indoor unit 2 by the air supply/exhaust fan 64 . In the humidification operation, the control device 81 drives the fan 22 of the air conditioning indoor unit 2 to blow high-humidity air into the room RM. The control unit 8 controls the air conditioning indoor unit 2, the air conditioning outdoor unit 4, and the humidifier 6 so that the humidity detected by the predetermined humidity sensor approaches the target humidity. The predetermined humidity sensor is a humidity sensor provided in a flow path through which air flows in the humidifier 6 and the air conditioner indoor unit 2 . The predetermined humidity sensor includes, for example, the indoor humidity sensor 32 and the humidity sensor attached to the humidification duct 28 .

(3-6) Ventilation Operation Before starting the ventilation operation, the control device 81 of the control section 8 is instructed to perform the ventilation operation from, for example, a remote controller. During the ventilation operation, the humidification operation is stopped. Further, when performing only the ventilation operation, the control unit 8 stops the compressor 41 and stops the refrigeration cycle in the refrigerant circuit 13 . However, for example, when cooling while ventilating or when heating while ventilating, the control unit 8 drives the compressor 41 to perform the refrigeration cycle in the refrigerant circuit 13 . In order to stop the humidification operation, the rotation of the adsorption fan 65 and the adsorption rotor 61 is stopped. In the ventilation operation, the controller 8 controls the motor 64m to drive the air supply/exhaust fan 64 . In the ventilation operation, the controller 8 switches between the air supply state and the air exhaust state by controlling the switching damper 63 . In the air supply state, outside air is taken in from the humidifying air intake port 69c and blown through the air supply/exhaust hose 68 and the air conditioning indoor unit 2 into the room RM. In the exhaust state, indoor air is exhausted from the room RM through the air conditioning indoor unit 2 and the air supply/exhaust hose 68 from the humidification air intake port 69c. In the ventilation operation, the control device 81 drives the fan 22 of the air conditioner indoor unit 2 to blow outside air into the room RM. During air supply in the ventilation operation, the humidification duct 28 functions as an air supply duct that supplies outside air that has not been humidified by the humidifier 6 as it is.

(3-7) Air Cleaning Operation The air conditioning system 1 can perform an air cleaning operation using the electrostatic atomizer 70 . Here, the air cleaning operation is an operation for suppressing harmful components and/or odorous components in the air. The air cleaning operation is, for example, an operation in which harmful or odorous components are suppressed with water particles (electrostatic mist) containing ions generated by the electrostatic atomizer 70 . The air cleaning operation using the electrostatic atomizer 70 is performed together with other operations such as cooling operation, heating operation, dehumidifying operation, humidifying operation, blowing operation, ventilation operation, or a combination thereof.

The control device 81 of the air conditioner indoor unit 2 controls the electrostatic atomizer unit 75 so as not to discharge the electrostatic atomizer unit 75 when outside air is introduced into the room RM (indoor) during humidification operation or ventilation operation. control 70;

(4) Modification (4-1) Modification A
In the above embodiment, the case where the electrostatic atomization device 70 and the electrostatic atomization unit 75 are arranged inside the casing 23 has been described. However, the electrostatic atomizer 70 and the electrostatic atomizer unit 75 may be arranged outside the casing 23 .

(4-2) Modification B
In the above embodiment, the case where the electrostatic atomizer 70 and the electrostatic atomizer unit 75 take in air from outside the ventilation path FP (the air supply path R1 and the other flow path R2) has been described. However, the air sent to the electrostatic atomizer 70 and the electrostatic atomizer unit 75 may be taken in from another flow path R2, as shown in FIGS. 13 and 14. FIG. For example, the suction port 72 a of the electrostatic atomizer 70 is connected to another flow path R2 downstream of the air filter 24 and upstream of the heat exchanger 21 . The discharge port 72b of the electrostatic atomizer 70 is connected to, for example, a scroll portion (a part of the air passage FP) that is connected to the blowout port 23b of the casing 23 .

(4-3) Modification C
In the above embodiment, the case where the electrostatic atomization unit 75 is arranged in the electrostatic atomization device 70 and the blower device 74 blows the electrostatic mist from the outlet 23b of the casing 23 has been described. However, the blower 74 may be omitted. For example, the air blower 74 may be omitted by positioning the electrostatic atomization unit 75 in the air flow of the other flow path R2.

(4-4) Modification D
In the above-described embodiment, the case where outside air is blown out from the blowout opening 28a of the humidification duct 28 toward the heat exchanger 21 has been described. However, the direction in which outside air is blown out from the humidification duct 28 is not limited to the direction toward the heat exchanger 21 . For example, as shown in FIG. 13 , outside air may be blown out in a direction perpendicular to the direction toward the heat exchanger 21 from the humidification duct 28 .

(4-5) Modification E
In the above embodiment, the case of using the humidifying duct 28 as the air supply member has been described. However, the air supply member is not limited to the humidification duct 28 only. For example, instead of the humidifier 6, an air supply/exhaust device that only supplies and exhausts outside air without a humidification function may be provided outdoors. When an air supply/exhaust device is installed, an air supply duct is arranged in the casing 23 instead of the humidification duct 28 . In such a configuration, the air conditioning indoor unit 2 cannot perform the humidification operation, but can perform the ventilation operation to supply outside air to the room RM (indoor). The arrangement relationship between the air supply duct and the electrostatic atomization unit 75 can be set in the same manner as the arrangement relationship between the humidification duct 28 and the electrostatic atomization unit 75 .

(5) Features (5-1)
The air conditioner indoor unit 2 described above has an air supply passage R1 in the casing 23 through which outside air, which is outdoor air, flows during humidification operation or ventilation operation. The electrostatic atomizer 70 and the electrostatic atomizer unit 75 are arranged outside the air supply passage R1. In other words, the air flowing through the air supply passage R1 does not flow to the electrostatic atomization device 70 and the electrostatic atomization unit 75 . Room air that enters the casing 23 from the room RM without passing through the ventilation path FP, room air that is supplied from another flow path R2, or when the electrostatic atomizer 70 is arranged outside the casing 23 Room air outside the casing 23 is the air that flows into the electrostatic atomizer 70 and the electrostatic atomizer unit 75 . Outside air does not flow into the electrostatic atomization device 70 and the electrostatic atomization unit 75 configured in this manner even during the humidification operation or the ventilation operation. Therefore, by arranging the electrostatic atomization unit 75 outside the air supply passage R1 through which the outside air flows, it is possible to suppress changes in the state of the outside air, particularly the influence of the outside air in a high humidity state on the electrostatic atomization unit 75. be able to.

(5-2)
The air supply passage R1 of the air conditioning indoor unit 2 is arranged on one end side of the casing 23 in the longitudinal direction D1. The electrostatic atomization device 70 and the electrostatic atomization unit 75 are arranged inside the casing 23 and arranged on the other end side in the longitudinal direction D1. In this way, with a simple configuration in which the air supply flow path R1 is arranged on one end side in the longitudinal direction and the electrostatic atomization unit 75 is arranged on the other end side, the effect of changes in the state of the outside air on the electrostatic atomization unit 75 can be reduced. can be suppressed. As for the configuration in which the electrostatic atomization unit 75 is arranged on the other end side, the electrostatic atomization unit 75 is arranged between the ventilation passage FP and the other end E2 of the casing 23, as in the above-described embodiment. The use of room air entering the casing 23 from the RM is included. Further, the configuration in which the electrostatic atomization unit 75 is arranged on the other end side includes the case where the indoor air flowing through the other flow path R2 is sent to the electrostatic atomization unit 75 as in the modification B.

(5-3)
In the air conditioner indoor unit 2 described above, the electrical component box 90 arranged to extend in the longitudinal direction D1 in the casing 23 has a first electrical component room 91 on one end side and a second electrical component room on the other end side. has 92. The second electrical component room 92 accommodates a second electrical circuit component driven by a voltage of 50 volts or higher for supplying electric power to the electrostatic atomizer 70, for example. By providing such a second electrical equipment chamber 92 on one end side of the longitudinal direction D1 in which the electrostatic atomization unit 75 is arranged, for example, the electrostatic atomizer 70 and the electrostatic atomizer can be discharged from the second electrical equipment chamber 92 . The wiring distance to the unit 75 can be shortened. As a result, it becomes easier to take measures against voltages of 50 volts or more.

(5-4)
In the air conditioner indoor unit 2 described above, the air guided to the electrostatic atomization unit 75 is taken in from the space between the ventilation path FP and the other end E2 of the casing 23 . A space between the ventilation path FP and the other end E2 of the casing 23 is a space other than the ventilation path FP. In the air conditioner indoor unit 2 described above, the liquid particles emitted from the electrostatic atomization unit 75 are nano-sized water particles. Since the air introduced into the electrostatic atomization unit 75 is taken in from a space other than the ventilation path FP, the outside air is not mixed with the air introduced into the electrostatic atomization unit 75, and changes in the state of the outside air are electrostatically generated. The influence on the atomization unit 75 can be reduced.

(5-5)
In the air conditioning indoor unit 2 described above, the blowout opening 28 a of the humidifying duct 28 or the blowout opening (not shown) of the air supply duct, which is an air supply member, is arranged to face the heat exchanger 21 . Due to the configuration in which the blow-out opening 28a faces the heat exchanger 21, outside air hits other parts of the casing 23 other than the heat exchanger 21, causing problems such as dew condensation on parts other than the heat exchanger 21. can be prevented from occurring.

(5-6)
The control device 81 of the air conditioning indoor unit 2 described above performs control so that the electrostatic atomization unit 75 does not discharge when outside air is introduced into the room RM (indoor). As a result, it is possible to prevent the electrostatic atomization unit 75 from being affected by the outside air when the outside air is introduced.

(5-7)
The air supply passage R1 of the air conditioning indoor unit 2 described above is a passage for supplying humidified outside air during the humidification operation. Even when the humidified outside air flows through the air supply passage R1 in this way, the electrostatic atomization unit 75 is arranged at a position separated from the air supply passage R1 through which the outside air flows, so that the humidity of the outside air is electrostatically atomized. The influence on the unit 75 can be suppressed.

Although embodiments of the present disclosure have been described above, it will be appreciated that various changes in form and detail may be made without departing from the spirit and scope of the present disclosure as set forth in the appended claims. .

2 Air conditioner indoor unit 21 Heat exchanger 22 Fan 23 Casing

23a Suction port

23b Air outlet 28 Humidification duct (Example of air supply member)
70 Electrostatic atomization device 75 Electrostatic atomization unit 81 Control device 90 Electrical component box 91 First electrical component room 92 Second electrical component room R1 Air supply channel FP Ventilation channel

JP 2014-20578 A

Claims

An air conditioning indoor unit (2) that performs indoor air conditioning,
A casing (23) having an air supply passage (R1) through which outside air, which is outdoor air, flows;
an electrostatic atomization unit (75) that emits liquid particles containing ions by electric discharge;
with
The air conditioner indoor unit (2), wherein the electrostatic atomization unit is arranged outside the air supply passage.
The air supply channel is arranged on one end side in the longitudinal direction of the casing,
The electrostatic atomization unit is arranged inside the casing and on the other end side in the longitudinal direction,
The air conditioning indoor unit (2) according to claim 1.
an electrical component box (90) disposed within said casing and extending in said longitudinal direction;
The electrical component box has a first electrical component room (91) for housing a first electrical circuit component driven by a voltage of less than 50 volts on the one end side, and a voltage of 50 volts or more on the other end side. has a second electrical compartment (92) that houses a second electrical circuit component that is
The air conditioning indoor unit (2) according to claim 2.
a fan (22) positioned within the casing;
The casing has a suction port (23a) for sucking room air from the room, a blowout port (23b) for blowing air into the room, and a ventilation path (FP) connecting the suction port and the blowout port. ,
The fan generates an airflow from the suction port toward the outlet through the ventilation passage,
The electrostatic atomization unit takes in air for discharging the liquid particles from a space other than the air passage.
The air conditioning indoor unit (2) according to any one of claims 1 to 3.
A heat exchanger (21) arranged in the ventilation passage in the casing for exchanging heat between the indoor air and the outside air and a heat medium,
The air supply channel includes an air supply member having a blowout opening for blowing out the outside air, and the blowout opening is arranged to face the heat exchanger.
The air conditioning indoor unit (2) according to claim 4.
A control device (81) for controlling the electrostatic atomization unit,
The control device controls the electrostatic atomization unit so as not to discharge when the outside air is introduced into the room.
Air conditioning indoor unit (2) according to any one of claims 1 to 5.
The air supply channel is a channel for supplying the humidified outside air,
Air conditioning indoor unit (2) according to any one of claims 1 to 6.