WO2023013586A1 - 空調室内機 - Google Patents

空調室内機 Download PDF

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Publication number
WO2023013586A1
WO2023013586A1 PCT/JP2022/029505 JP2022029505W WO2023013586A1 WO 2023013586 A1 WO2023013586 A1 WO 2023013586A1 JP 2022029505 W JP2022029505 W JP 2022029505W WO 2023013586 A1 WO2023013586 A1 WO 2023013586A1
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WO
WIPO (PCT)
Prior art keywords
air
filter
air supply
fan
utilization
Prior art date
Application number
PCT/JP2022/029505
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
幸子 松本
裕 伊藤
Original Assignee
ダイキン工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ダイキン工業株式会社 filed Critical ダイキン工業株式会社
Priority to CN202280051712.9A priority Critical patent/CN117716178A/zh
Publication of WO2023013586A1 publication Critical patent/WO2023013586A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification

Definitions

  • Patent Document 1 International Publication No. 2018/2301278 discloses an air conditioning indoor unit that includes an air filter and an air cleaning filter.
  • An air filter is a filter intended to capture relatively large dust particles.
  • An air purifying filter is a filter that has a higher airflow resistance than an air filter and is intended to capture fine particles that pass through the air filter.
  • the moving device moves the air cleaning filter to a position covering part of the air filter.
  • the air conditioning indoor unit of Patent Document 1 can perform an air cleaning operation in which the air cleaning filter collects dust in the air.
  • An air conditioner equipped with a humidification unit is known.
  • the humidification unit generates humidified air by humidifying outside air.
  • the air conditioner humidifies the conditioned air with humidified air generated from the humidified air.
  • the air purifying filter is clogged due to the adhesion of moisture contained in the humidified air and the adhesion of dust in the air to the attached moisture. As a result, the air cleaning capacity of the indoor unit of the air conditioner decreases.
  • the present disclosure proposes an indoor air conditioner capable of suppressing deterioration in air cleaning performance caused by humidified air.
  • the air conditioning indoor unit of the first aspect includes a fan, a first filter, a second filter, and an air supply duct.
  • a fan generates an airflow.
  • the first filter is a filter through which the airflow generated by the fan passes.
  • the second filter is a filter through which the airflow generated by the fan passes and has a higher dust collection capability than the first filter.
  • the air supply duct supplies humidified air, which is obtained by humidifying outside air, to the airflow generated by the fan.
  • the air supply duct has an air supply opening for blowing out humidified air.
  • the air supply port is arranged downstream of the second filter in the airflow.
  • the air conditioning indoor unit of the second aspect is the air conditioning indoor unit of the first aspect, and the air supply port is formed so that the humidified air is blown out toward the downstream side of the airflow.
  • the air conditioning indoor unit of the third aspect is the air conditioning indoor unit of the first aspect or the second aspect, and further includes a heat exchanger.
  • the air supply port is formed so as to face the heat exchanger.
  • the shortest distance between the air supply port and the heat exchanger is 15 mm or less.
  • the air conditioning indoor unit of the fourth aspect is the air conditioning indoor unit of the first aspect, further comprising a heat exchanger arranged upstream of the airflow relative to the fan.
  • the fan is a cross-flow fan.
  • the air supply port is arranged on the upstream side of the airflow relative to the heat exchanger, and is formed so that the humidified air is blown out along the extending direction of the rotating shaft of the cross-flow fan.
  • the humidified air blown out from the air supply port spreads in the direction of extension of the rotating shaft and is integrated with the air flow to pass through the heat exchanger. Therefore, according to the present indoor air conditioner, it is possible to effectively humidify the conditioned air while suppressing a decrease in the air cleaning performance due to the humidification operation.
  • An air conditioning indoor unit is the air conditioning indoor unit according to any one of the first aspect to the fourth aspect, wherein the second filter covers a portion of the first filter at a first position and covers the first filter. No second position.
  • the air conditioning indoor unit of the sixth aspect is the air conditioning indoor unit of the fifth aspect, and the second filter is at the second position while humidified air is being supplied from the air supply duct.
  • the distance between the air supply port and the second filter is secured while the humidified air is blown out from the air supply port, so that the passage of the humidified air through the second filter is effectively suppressed. Therefore, according to the present indoor air conditioner, it is possible to effectively suppress the deterioration of the air cleaning performance caused by the humidification operation.
  • the air conditioning indoor unit of the seventh aspect is the air conditioning indoor unit of the fifth aspect, in which no humidified air is supplied from the air supply duct while the second filter is in the second position.
  • the present indoor air conditioner it is possible to effectively suppress the deterioration of the air cleaning performance caused by the humidification operation.
  • FIG. 1 is a schematic configuration diagram of an air conditioner 1 including a utilization unit 3 according to one embodiment.
  • FIG. 2 is a front view of the usage unit 3.
  • FIG. 3 is a schematic cross-sectional view of the utilization unit 3 taken along line A-A'.
  • FIG. 4 is a schematic cross-sectional view of the utilization unit 3 taken along line B-B'.
  • FIG. 5 is a schematic cross-sectional view taken along line A-A' of the utilization unit 3 with the second filter 37 at the second position.
  • 6 is a perspective view of the air supply duct 38.
  • FIG. FIG. 7 is a control block diagram of the control section 9. As shown in FIG.
  • FIG. 1 is a schematic configuration diagram of an air conditioner 1 including a usage unit 3 according to one embodiment.
  • the air conditioner 1 air-conditions a room (not shown) such as a building, which is a target space, by a vapor compression refrigerant cycle.
  • the air conditioner 1 mainly includes a heat source unit 2, a utilization unit 3, a humidification unit 4, a liquid refrigerant communication pipe 5, a gas refrigerant communication pipe 6, an air supply hose 7, a controller 9, and a remote controller 8. and have
  • the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6 connect the heat source unit 2 and the utilization unit 3 .
  • the heat source unit 2 , the utilization unit 3 , the liquid refrigerant communication pipe 5 , and the gas refrigerant communication pipe 6 are annularly connected by refrigerant pipes to form a refrigerant circuit 10 .
  • the refrigerant circuit 10 has a refrigerant sealed inside.
  • the air supply hose 7 connects the humidification unit 4 and the utilization unit 3 .
  • the air supply hose 7 is a member that supplies outside air from the humidification unit 4 toward the utilization unit 3 .
  • the outside air supplied from the humidification unit 4 to the usage unit 3 includes humidified air obtained by humidifying the outside air.
  • control unit 9 controls each device of the air conditioner 1 to perform air conditioning operations such as heating operation, cooling operation, humidification operation, air supply operation, and air cleaning operation.
  • the heat source unit 2 is installed outdoors (on the roof of a building, near the exterior wall of the building, etc.).
  • the heat source unit 2 mainly has a compressor 21 , a four-way switching valve 23 , a heat source heat exchanger 24 , a heat source expansion valve 25 and a heat source fan 26 .
  • the compressor 21 sucks low-pressure refrigerant from the suction side 21a, compresses it to high pressure, and then discharges it from the discharge side 21b.
  • a closed-type compressor is used in which a displacement type compression element (not shown) such as a rotary type or a scroll type is rotationally driven by a motor (not shown).
  • the number of revolutions of the motor is controlled by the controller 9 via an inverter or the like.
  • the capacity of the compressor 21 is controlled by the controller 9 changing the number of revolutions of the motor.
  • the four-way switching valve 23 switches the direction of refrigerant flow in the refrigerant circuit 10 .
  • the four-way switching valve 23 has a first port P1, a second port P2, a third port P3, and a fourth port P4.
  • the four-way switching valve 23 is controlled by the controller 9 to be in the first state (the state indicated by the dashed line in FIG. 1) in which the first port P1 and the fourth port P4 communicate with each other and the second port P2 and the third port P3 communicate with each other. ) and a second state (shown by solid lines in FIG. 1) in which the first port P1 and the second port P2 communicate with each other and the third port P3 and the fourth port P4 communicate with each other.
  • the first port P1 is connected to the discharge side 21b of the compressor 21.
  • the second port P2 is connected to the gas side of the heat source heat exchanger 24 .
  • the third port P3 is connected to the suction side 21a of the compressor 21 .
  • the fourth port P4 is connected to the gas refrigerant communication pipe 6 .
  • the heat source heat exchanger 24 is a heat exchanger that exchanges heat between the refrigerant and outdoor air in the refrigerant circuit 10 .
  • One end of the heat source heat exchanger 24 is connected to the heat source expansion valve 25 .
  • the other end of the heat source heat exchanger 24 is connected to the second port P2 of the four-way switching valve 23 .
  • the heat source expansion valve 25 is an expansion mechanism that reduces the pressure of the refrigerant in the refrigerant circuit 10 .
  • the heat source expansion valve 25 is provided between the liquid refrigerant communication pipe 5 and the liquid side of the heat source heat exchanger 24 .
  • the heat source expansion valve 25 is an electric expansion valve whose degree of opening can be controlled. The degree of opening of the heat source expansion valve 25 is controlled by the controller 9 .
  • the heat source fan 26 generates airflow and supplies outdoor air to the heat source heat exchanger 24 .
  • the heat source fan 26 supplies the outdoor air to the heat source heat exchanger 24, thereby promoting heat exchange between the refrigerant in the heat source heat exchanger 24 and the outdoor air.
  • the heat source fan 26 is rotationally driven by a heat source fan motor 26a.
  • the air volume of the heat source fan 26 is controlled by the controller 9 changing the rotation speed of the heat source fan motor 26a.
  • the usage unit 3 is a wall-mounted indoor air conditioner that is installed on the wall in the room that is the target space.
  • the utilization unit 3 mainly includes a utilization heat exchanger 31, a utilization fan 32, a dust detection sensor 33, a casing 34, a flap 35, a first filter 36, a second filter 37, and an air supply duct 38.
  • FIG. 2 is a front view of the usage unit 3.
  • FIG. 3 is a schematic cross-sectional view of the utilization unit 3 taken along line AA'.
  • FIG. 4 is a schematic cross-sectional view of the user unit 3 taken along line BB'.
  • part of the casing 34 and the second filter 37 are shown transparently.
  • 3 and 4 show a state in which the second filter 37 is at a first position, which will be described later.
  • the directions of up, down, front, rear, left and right used in the following description follow the directions indicated by the arrows in FIGS.
  • the utilization heat exchanger 31 exchanges heat between the refrigerant and the indoor air in the refrigerant circuit 10 .
  • One end of the utilization heat exchanger 31 is connected to the liquid refrigerant communication pipe 5 .
  • the other end of the utilization heat exchanger 31 is connected to the gas refrigerant communication pipe 6 .
  • the utilization heat exchanger 31 is, for example, but not limited to, a cross-fin type fin-and-tube heat exchanger composed of heat transfer tubes and heat transfer fins.
  • the utilization heat exchanger 31 is arranged in the air flow path generated by the utilization fan 32 . Specifically, as shown in FIG. 2, it is arranged so as to cover the front and top of the utilization heat exchanger 31 .
  • the utilization fan 32 is a blower that generates an airflow.
  • the indoor air passes through the utilization heat exchanger 31 by the utilization fan 32 generating an airflow. Passing the indoor air through the heat utilization exchanger 31 promotes heat exchange between the refrigerant in the heat utilization exchanger 31 and the outdoor air.
  • the utilization fan 32 is a cross-flow fan in which the rotation axis O is arranged along the left-right direction.
  • the utilization fan 32 is rotationally driven by a utilization fan motor 32a.
  • the air volume of the utilization fan 32 is controlled by the controller 9 by changing the rotational speed of the utilization fan motor 32a.
  • the utilization fan 32 is an example of a fan.
  • the dust detection sensor 33 detects the presence or absence of dust contained in the indoor air.
  • the dust detection sensor 33 is provided inside the casing 34 .
  • the casing 34 has a substantially rectangular parallelepiped shape elongated in the left-right direction, including a front surface 34a, a side surface 34b, a top surface 34c, a bottom surface 34d, and a rear surface 34e.
  • the utilization heat exchanger 31 , the utilization fan 32 , the first filter 36 , the second filter 37 , and the dust detection sensor 33 are housed inside the casing 34 .
  • an outlet 34f is formed from which the air that has undergone heat exchange with the refrigerant in the heat utilization exchanger 31 blows out.
  • the utilization fan 32 When the utilization fan 32 generates an airflow, the refrigerant that has exchanged heat with the refrigerant in the utilization heat exchanger 31 is blown out into the room through the outlet 34f.
  • the top surface 34c is formed with a suction port 34g for letting indoor air flow into the casing 34. As shown in FIG. The indoor air flows into the casing 34 through the suction port 34g by the utilization fan 32 generating an airflow.
  • the flap 35 is a substantially plate-shaped member for adjusting the flow rate and/or direction of the air blown out from the blowout port 34f of the casing 34. As shown in FIG. The flap 35 is attached to the casing 34 so as to be rotatable within a predetermined angular range around a rotation axis extending in the left-right direction so as to cover the blowout port 34f. The flap 35 is rotationally driven by a motor (not shown).
  • the first filter 36 is a filter through which the airflow generated by the utilization fan 32 passes. More specifically, the first filter 36 is a filter through which air flowing into the casing 34 through the suction port 34g passes. The first filter 36 is provided above the utilization heat exchanger 31 .
  • the second filter 37 is a filter that has a higher dust collection capability than the first filter 36 .
  • the second filter 37 is also a filter through which the airflow generated by the utilization fan 32 passes. More specifically, the second filter 37 is a filter through which at least part of the airflow flowing into the casing 34 through the suction port 34g passes before passing through the first filter 36 .
  • the second filter 37 is arranged upstream of the first filter 36 in the airflow inside the casing 34 so as to partially cover the first filter 36 .
  • the second filter 37 is preferably of a pleated type or a non-woven fabric type, which has a high dust collection capability.
  • FIG. 5 is a schematic cross-sectional view taken along line A-A' of the utilization unit 3 with the second filter 37 at the second position.
  • the air conditioner 1 has a moving device 37a for moving the second filter 37 between the first position and the second position between the front edge of the first filter 36 and the front surface 34a of the casing 34. provided in the first space S1.
  • the moving device 37a has a pinion and a motor (not shown).
  • the pinion is rotationally driven by a motor.
  • the pinion is meshed with a rack formed on the second filter 37 .
  • the second filter 37 moves between the first position and the second position as the pinion rotates.
  • the motor is rotationally driven by the controller 9 .
  • the first position is above the front side of the first filter 36 .
  • the second position is inside the housing space S. As shown in FIG. The second filter 37 at the second position is accommodated in the first space S1 without covering the first filter 36, as shown in FIG.
  • the air supply duct 38 is a member that supplies outside air supplied from the humidification unit 4 to a predetermined location inside the utilization unit 3 .
  • 6 is a perspective view of the air supply duct 38.
  • the air supply duct 38 has a suction port 38a, a communicating portion 38b, and an air supply port 38c.
  • the suction port 38a is an opening for connecting one end of the air supply hose 7. Outside air supplied from the humidifying unit 4 flows through the air supply hose 7 and into the air supply duct 38 from the suction port 38a.
  • the suction port 38a is arranged in the vicinity of the lower side of the back surface 34e, as shown in FIG.
  • the communication portion 38b is a pipe that communicates the suction port 38a and the air supply port 38c.
  • the communicating portion 38b is mainly composed of a first communicating portion 38b1 and a second communicating portion 38b2.
  • the first communication portion 38b1 is a flat pipe that extends forward from the air supply port 38c at the left end inside the casing 34 and then extends upward.
  • the second communicating portion 38b2 is a flat pipe extending rightward from the front end of the first communicating portion 38b1 above the heat utilization exchanger 31 .
  • the second communication portion 38b2 is formed so as to be located in the second space S2 between the first filter 36 and the heat utilization exchanger 31. As shown in FIG.
  • the air supply port 38c is an opening for blowing outside air into the utilization unit 3.
  • the air supply port 38c is arranged downstream of the second filter 37 in the air flow, as shown in FIGS. Furthermore, in the air conditioner 1, the air supply port 38c is arranged downstream of the first filter 36 in the air flow. Further, the air supply port 38c is formed so that outside air is blown out toward the downstream side of the airflow.
  • the air supply port 38 c is formed so as to face the utilization heat exchanger 31 . Specifically, the air supply port 38c is formed on the surface of the second communication portion 38b2 facing the heat utilization heat exchanger 31. As shown in FIG.
  • the air supply port 38c is preferably formed at a position where the shortest distance D (see FIG. 3) to the heat exchanger 31 is 15 mm or less, more preferably 10 mm or less.
  • the air supply duct 38 may have a filter for suppressing dust contained in the outside air from blowing out into the usage unit 3 through the air supply port 38c.
  • This filter is provided, for example, inside the communicating portion 38b or in the air supply port 38c.
  • the humidification unit 4 is a device that supplies outside air to the utilization unit 3 .
  • the outside air includes humidified air obtained by humidifying the outside air.
  • the humidification unit 4 is installed outdoors (on the roof of a building, near the outer wall surface of the building, etc.) together with the heat source unit 2 .
  • the heat source unit 2 and the humidification unit 4 may be integrated.
  • the humidification unit 4 mainly has a humidification rotor 41 , a heater 42 , an air supply fan 43 , an adsorption fan 44 , a first path 45 and a second path 46 .
  • the humidification rotor 41 is a humidity control rotor that adsorbs moisture in the outside air and releases the adsorbed moisture when heated.
  • the humidification rotor 41 has a honeycomb structure and has a substantially disk-shaped outer shape.
  • the humidification rotor 63 is manufactured using a material that adsorbs moisture in the air at room temperature and releases moisture when exposed to heated air or the like and the temperature rises.
  • the material of the humidification rotor 63 is not limited, it is an adsorbent such as silica gel or zeolite.
  • the humidification rotor 41 is provided rotatably in the circumferential direction inside the humidification unit 4, and is rotated by a rotor drive motor 41a.
  • the rotor drive motor 41 a is controlled by the controller 9 .
  • the heater 42 heats the humidifying rotor 41 .
  • the heater 42 is provided in the first path 45 and heats the outside air sent to the humidification rotor 41 through the first path 45 .
  • the heated outside air is sent to the humidification rotor 41 .
  • the heater 42 is controlled by the controller 9 .
  • the air supply fan 43 is an air blower that flows the outside air into the first path 45 and supplies the outside air to the air supply hose 7 .
  • the air supply fan 43 is controlled by the controller 9 .
  • the adsorption fan 44 is an air blower that causes outside air to flow into the second path 46 .
  • the suction fan 44 is controlled by the controller 9 .
  • the first path 45 is a ventilation path for supplying outside air that has passed through the humidification rotor 41 to the air supply fan 43 .
  • the first path 45 is a path that connects the first intake port 45a, the heater 42, the humidifying section 45b, and the first discharge port 45c in this order. .
  • the first intake port 45a is an opening formed in the humidification unit 4. Outside air flows into the first path 45 through the first intake port 45a.
  • the humidifying portion 45b is a portion where a predetermined range in the circumferential direction of the humidifying rotor 41 is exposed. The moisture adsorbed by the humidifying rotor 41 is released to the outside air heated by the heater 42 and passing through the humidifying section 45b.
  • the first discharge port 45c is connected to the air supply fan 43. Outside air flows into the air supply fan 43 through the first outlet 45c.
  • the second path 46 is a ventilation path that causes the humidifying rotor 41 to adsorb moisture contained in the inflowing outside air. Specifically, as shown in FIG. 2, the second path 46 is a path that connects the second intake port 46a, the suction portion 46b, the suction fan 44, and the second discharge port 46c in this order. be.
  • the second intake port 46a is an opening formed in the humidification unit 4. Outside air flows into the second path 46 through the second intake port 46a.
  • the adsorption portion 46b is a portion where a predetermined range in the circumferential direction of the humidification rotor 41 is exposed.
  • the exposed range of the adsorption section 46b is different from the exposed range of the humidifying section 45b. Moisture contained in the outside air that has flowed into the second path 46 is adsorbed by the humidification rotor 41 in the adsorption portion 46b.
  • the second discharge port 46c is an opening formed in the humidification unit 4.
  • the outside air with moisture adsorbed on the humidifying rotor 41 flows out of the second path 46 through the second outlet 46c.
  • the remote controller 8 is used by the user to perform any one of the heating operation, cooling operation, humidifying operation, air supply operation, and air cleaning operation, stop the air conditioner 1, set temperature Ts, etc. It accepts the setting value and transmits the accepted result to the control unit 9 as a control signal.
  • the control unit 9 records the received set values in the storage device.
  • FIG. 7 is a control block diagram of the control unit 9.
  • the control unit 9 mainly includes a compressor 21, a four-way switching valve 23, a heat source expansion valve 25, a heat source fan 26, a utilization fan 32, a moving device 37a, a rotor drive motor 41a, and a heater 42.
  • the air supply fan 43, the suction fan 44, and the remote control 8 are connected so as to be able to transmit and receive control signals.
  • the controller 9 is also connected to the dust detection sensor 33 so as to be able to receive detection signals.
  • control unit 9 controls the operation of the compressor 21, the four-way switching valve 23, the heat source expansion valve 25, the heat source fan 26, and the utilization fan 32, respectively, thereby operating the refrigerant circuit 10. Control.
  • the control unit 9 is typically implemented by a computer including a control arithmetic device and a storage device (both not shown).
  • the control computing unit is a processor, such as a CPU or GPU.
  • the control arithmetic unit reads out the control program stored in the storage device and performs operation control according to this control program. Furthermore, the control arithmetic device can write the arithmetic result to the storage device and read the information stored in the storage device according to the control program.
  • FIG. 1 is a schematic diagram, and the control unit 9 includes an outdoor control unit provided inside the heat source unit 2 and an internal control unit inside the usage unit 3, which are connected by a communication line capable of transmitting and receiving control signals. It may be configured by an indoor control unit provided.
  • control unit 9 When the control unit 9 receives a control signal from the remote control 8 instructing the execution of the heating operation, it starts the heating operation. During the heating operation, the control unit 9 switches the four-way switching valve 23 to the first state (see broken line in FIG. 1). Further, the control unit 9 sets the heat source expansion valve 25 to the degree of opening corresponding to the set temperature Ts received from the remote controller 8, operates the compressor 21, and drives the utilization fan 32 to rotate. As a result, the heat source heat exchanger 24 functions as a refrigerant evaporator, and the utilization heat exchanger 31 functions as a refrigerant condenser.
  • the refrigerant circuit 10 functions as follows.
  • the high-pressure refrigerant discharged from the compressor 21 exchanges heat with the indoor air supplied by the utilization fan 32 in the utilization heat exchanger 31 and is condensed.
  • the indoor air is heated and discharged indoors as conditioned air.
  • the condensed refrigerant passes through the heat source expansion valve 25 and is decompressed, it exchanges heat with the outdoor air supplied by the heat source fan 26 in the heat source heat exchanger 24 and evaporates.
  • the refrigerant that has passed through the heat source heat exchanger 24 is sucked into the compressor 21 and compressed.
  • the control unit 9 receives a control signal from the remote controller 8 instructing the execution of the cooling operation, it starts the cooling operation.
  • the controller 9 switches the four-way selector valve 23 to the second state (see the solid line in FIG. 1).
  • the control unit 9 sets the heat source expansion valve 25 to the degree of opening corresponding to the set temperature Ts received from the remote controller 8, operates the compressor 21, and drives the utilization fan 32 to rotate.
  • the heat source heat exchanger 24 functions as a refrigerant condenser
  • the utilization heat exchanger 31 functions as a refrigerant evaporator.
  • the refrigerant circuit 10 functions as follows.
  • the high pressure refrigerant discharged from the compressor 21 exchanges heat with the outdoor air supplied by the heat source fan 26 in the heat source heat exchanger 24 and is condensed.
  • the indoor air is cooled and discharged indoors as conditioned air.
  • the refrigerant that has passed through the heat utilization exchanger 31 is sucked into the compressor 21 and compressed.
  • Humidification operation is an air conditioning operation in which conditioned air is humidified using humidified air obtained by humidifying outside air.
  • the control unit 9 receives a control signal from the remote control 8 for instructing the execution of the humidification operation, the control unit 9 starts the humidification operation.
  • the controller 9 rotates the humidification rotor 41 by the rotor drive motor 41a, causes the air supply fan 43 and the adsorption fan 44 to blow air, causes the heater 42 to heat the outside air flowing through the first path 45, and operates the utilization fan. 32 is rotationally driven. While the humidification operation is being performed, the refrigerant circuit 10 can perform the heating operation or the cooling operation.
  • the humidification unit 4 functions as follows. As the suction fan 44 rotates, outside air flows into the second path 46 through the second inlet 46a. The outside air that has flowed into the second path 46 passes through a predetermined range of the rotating humidifying rotor 41 in the adsorption portion 46b. Moisture contained in the outside air is adsorbed by the humidifying rotor 41 as the outside air passes through the humidifying rotor 41 . The outside air with moisture adsorbed on the humidifying rotor 41 is discharged to the outside of the humidifying unit 4 through the second outlet 46c.
  • outside air flows into the first path 45 from the first intake port 45a.
  • the outside air that has flowed into the first path 45 is heated by the heater 42 and then passes through a predetermined range of the rotating humidifying rotor 41 in the humidifying section 45b.
  • the heated outside air passes through the humidification rotor 41 , the moisture adsorbed in the adsorption portion 46 b is released from the heated humidification rotor 41 .
  • the outside air that has passed through the humidification rotor 41 is humidified to become humidified air, which flows into the air supply fan 43 via the first discharge port 45c.
  • the humidified air that has flowed into the air supply fan 43 passes through the air supply hose 7 and flows into the air supply duct 38 of the utilization unit 3, and then, as indicated by the hatched arrows in FIGS. Outside air is blown out from the port 38c.
  • the utilization fan 32 is rotationally driven to generate an airflow while the humidified air is blown out as outside air from the air supply port 38c. Therefore, the humidified air blown out from the air supply port 38 c is integrated with the airflow passing through the heat utilization heat exchanger 31 . As a result, humidified conditioned air is blown out from the utilization unit 3 .
  • the air supply operation is an air conditioning operation in which outside air is supplied to the target space without being humidified.
  • the control unit 9 starts the air supply operation when it receives a control signal from the remote controller 8 for instructing the execution of the air supply operation.
  • the controller 9 causes the air supply fan 43 to blow air, and drives the utilization fan 32 to rotate.
  • the controller 9 stops the humidification rotor 41 by the rotor drive motor 41a, and stops the adsorption fan 44 and the heater 42.
  • the control part 9 may rotate the humidification rotor 41 at low speed by the rotor drive motor 41a. While the air supply operation is being performed, the refrigerant circuit 10 can perform heating operation or cooling operation.
  • the humidification unit 4 functions as follows. As the air supply fan 43 rotates, outside air flows into the first path 45 through the first intake port 45a. The outside air that has flowed into the first path 45 passes through a predetermined range of the humidification rotor 41 without being heated by the heater 42 . At this time, since the outside air is not heated, moisture is not released to the outside air passing through the adsorption portion 46b, and humidified air is not generated. The outside air that has passed through the humidification rotor 41 flows into the air supply fan 43 via the first discharge port 45c.
  • the outside air that has flowed into the air supply fan 43 flows through the air supply hose 7 into the air supply duct 38 of the utilization unit 3, and then flows through the air supply port as indicated by the hatched arrows in FIGS. It blows out from 38c.
  • the utilization fan 32 is rotationally driven to generate an airflow while the outside air is blown out from the air supply port 38c. For this reason, the outside air blown out from the air supply port 38c flows into the casing 34 from the suction port 34g and becomes integrated with the airflow passing through the heat utilization heat exchanger 31 . As a result, outside air and conditioned air are blown out together from the utilization unit 3 .
  • the air cleaning operation is an air conditioning operation in which airflow is allowed to pass through the second filter 37 to collect dust in the air.
  • the control unit 9 starts the air cleaning operation when it receives a control signal from the remote control 8 to instruct the execution of the air cleaning operation.
  • the controller 9 moves the second filter 37 to the first position and drives the utilization fan 32 to rotate.
  • the control unit 9 may automatically start executing the air cleaning operation based on the dust detection result by the dust detection sensor 33b.
  • the control unit 9 may perform the air cleaning operation simultaneously with the heating operation, the cooling operation, the humidification operation, or the air supply operation.
  • the utilization unit 3 which is an indoor air conditioner, includes a utilization fan 32 , a first filter 36 , a second filter 37 , and an air supply duct 38 .
  • the utilization fan 32 generates an airflow.
  • the first filter 36 is a filter through which the airflow generated by the utilization fan 32 passes.
  • the second filter 37 is a filter through which the airflow generated by the utilization fan 32 passes and has a higher dust collection capability than the first filter 36 .
  • the air supply duct 38 supplies humidified air obtained by humidifying outside air to the airflow generated by the utilization fan 32 .
  • the air supply duct 38 has an air supply port 38c for blowing out humidified air.
  • the air supply port 38c is arranged downstream of the second filter 37 in the airflow.
  • the air supply port 38c is formed such that humidified air is blown out toward the downstream side of the airflow.
  • the utilization fan 32 further includes a utilization heat exchanger 31 .
  • the air supply port 38 c is formed so as to face the utilization heat exchanger 31 .
  • the shortest distance D between the air supply port 38c and the utilization heat exchanger 31 is 15 mm or less.
  • the second filter 37 moves between a first position covering part of the first filter 36 and a second position not covering the first filter.
  • the second filter 37 can be moved between two positions as needed to change the distance from the air supply port 38c. Therefore, according to the utilization unit 3, the deterioration of the air cleaning ability due to the humidification operation is effectively suppressed.
  • the air supply port 38c of the air supply duct 38 is arranged on the upstream side of the air flow relative to the heat utilization heat exchanger 31, and the outside air or humidified air reaches the rotation axis O of the utilization fan 32. It is formed so as to be blown out along the stretching direction.
  • the outside air or humidified air blown out from the air supply port 38c spreads in the direction in which the rotation axis O extends, becoming integrated with the airflow, and can pass through the heat exchanger 31 for utilization. Therefore, according to the utilization unit 3 of the air conditioner 1 according to Modification A, it is possible to effectively humidify the conditioned air while suppressing a decrease in the air cleaning performance due to the humidification operation.
  • the second filter 37 may be in the second position while humidified air is being supplied from the air supply duct 38 .
  • the controller 9 may move the second filter 37 to the second position during the humidification operation.
  • the distance between the air supply port 38c and the second filter 37 is secured while the air is blown out from the air supply port 38c, so that the passage of the humidified air through the second filter 37 is effectively suppressed. . Therefore, according to the utilization unit 3 of the air conditioner 1 according to Modification B, it is possible to effectively suppress a decrease in the air cleaning performance due to the humidification operation.
  • the controller 9 does not have to supply humidified air from the air supply duct 38 while the second filter 37 is at the second position. Specifically, when the air cleaning operation is being performed, the control unit 9 does not have to perform the humidification operation even if there is an execution instruction.
  • the utilization unit 3 of the air conditioner 1 according to the modified example C it is possible to effectively suppress the deterioration of the air cleaning ability caused by the humidification operation.
  • the second filter 37 is moved between the first position and the second position by the moving device 37a. It may be moved manually.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Humidification (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Central Air Conditioning (AREA)
PCT/JP2022/029505 2021-08-06 2022-08-01 空調室内機 WO2023013586A1 (ja)

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JP2021129958A JP2023023959A (ja) 2021-08-06 2021-08-06 空調室内機

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CN (1) CN117716178A (enrdf_load_stackoverflow)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002089897A (ja) * 2000-09-12 2002-03-27 Daikin Ind Ltd 空気調和機
JP2002089892A (ja) * 2000-09-12 2002-03-27 Daikin Ind Ltd 空気調和機
JP2019045108A (ja) * 2017-09-06 2019-03-22 パナソニックＩｐマネジメント株式会社 空気調和機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3587151B2 (ja) * 2000-09-21 2004-11-10 ダイキン工業株式会社 加湿機能を有する空気調和機
JP2005344985A (ja) * 2004-06-02 2005-12-15 Daikin Ind Ltd ダクト装置
JP4794280B2 (ja) * 2005-11-14 2011-10-19 三洋電機株式会社 空気調和機
JP5062114B2 (ja) * 2008-09-09 2012-10-31 ダイキン工業株式会社 空気調和装置の室内機
CN110325798A (zh) * 2017-06-15 2019-10-11 松下知识产权经营株式会社 空气调节机
JPWO2019003511A1 (ja) * 2017-06-30 2020-04-30 パナソニックＩｐマネジメント株式会社 空気調和機
JP2020085271A (ja) * 2018-11-16 2020-06-04 三菱電機株式会社 熱交換型換気装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002089897A (ja) * 2000-09-12 2002-03-27 Daikin Ind Ltd 空気調和機
JP2002089892A (ja) * 2000-09-12 2002-03-27 Daikin Ind Ltd 空気調和機
JP2019045108A (ja) * 2017-09-06 2019-03-22 パナソニックＩｐマネジメント株式会社 空気調和機

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