WO2016098727A1 - Outdoor unit for air conditioner - Google Patents

Outdoor unit for air conditioner Download PDF

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Publication number
WO2016098727A1
WO2016098727A1 PCT/JP2015/084928 JP2015084928W WO2016098727A1 WO 2016098727 A1 WO2016098727 A1 WO 2016098727A1 JP 2015084928 W JP2015084928 W JP 2015084928W WO 2016098727 A1 WO2016098727 A1 WO 2016098727A1
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WO
WIPO (PCT)
Prior art keywords
air
outdoor
heat exchanger
outdoor unit
air conditioner
Prior art date
Application number
PCT/JP2015/084928
Other languages
French (fr)
Japanese (ja)
Inventor
雅人 平木
陽介 駒井
竜彦 赤井
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 EP15869932.2A priority Critical patent/EP3236165A4/en
Priority to AU2015364799A priority patent/AU2015364799B2/en
Priority to CN201580068135.4A priority patent/CN107110528B/en
Publication of WO2016098727A1 publication Critical patent/WO2016098727A1/en

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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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/08—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using heated wet elements
    • F24F6/10—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using heated wet elements heated electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/16—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using rotating elements
    • 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
    • F24F2003/1458—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 using regenerators
    • F24F2003/1464—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 using regenerators using rotating regenerators
    • 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
    • F24F3/1411—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 by absorbing or adsorbing water, e.g. using an hygroscopic desiccant

Definitions

  • the present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of an air conditioner having a humidifying function.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2008-190828
  • the configuration is such that air that has passed through the outdoor heat exchanger flows through a plate-like adsorbing member arranged in parallel to the front surface thereof. It is.
  • the ventilation resistance of the outdoor heat exchanger is large, and it is difficult to increase the amount of air passing through the adsorption member. Further, when frosting on the outdoor heat exchanger starts, the ventilation resistance further increases and the adsorption is increased. Since the air volume to the member is reduced, it is a key to improving the humidification performance.
  • An object of the present invention is to provide an outdoor unit of an air conditioner that can secure an air volume that permeates an adsorbing member without depending on an air volume that passes through an outdoor heat exchanger.
  • a plate-like adsorbing member that releases moisture by being heated after adsorbing moisture in the air is disposed so that the surface thereof is along the vertical plane.
  • An outdoor unit of an air conditioner which includes a main body casing that forms an outer shell, an outdoor heat exchanger that is housed in the main body casing, and an outdoor fan.
  • the outdoor fan is housed in the main casing and generates an air flow that passes through the outdoor heat exchanger.
  • the main body casing has a blower outlet and a suction opening. Air from the outdoor fan is blown out from the outlet.
  • the suction opening is provided at a position different from the air outlet and introduces air that does not pass through the outdoor heat exchanger.
  • An air flow path is formed in the main casing to allow the air introduced from the suction opening to flow through the adsorption member and pass through the adsorption member due to the negative pressure generated when the outdoor fan generates an air flow.
  • the outdoor unit of the air conditioner according to the second aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect, and further includes a bell mouth that guides air from the outdoor fan to the outlet. And the upstream edge part of the air flow direction in a bell mouth and the downstream edge part of the air flow direction in the said air flow path are adjacent.
  • the outdoor unit of the air conditioner according to the third aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect or the second aspect, and the adsorption member adsorbs moisture in the air flowing through the air flow path.
  • the side and the discharge side for releasing the adsorbed moisture coexist, and the adsorption side is arranged closer to the bell mouth.
  • An outdoor unit of an air conditioner according to a fourth aspect of the present invention is an outdoor unit of an air conditioner according to any one of the first to third aspects, wherein the adsorption member is parallel to the front surface portion of the main casing. Has been placed.
  • An outdoor unit of an air conditioner according to a fifth aspect of the present invention is an outdoor unit of an air conditioner according to any one of the second to fourth aspects, wherein the suction opening and the bell mouth opening are provided on the body casing. It is provided in the front part.
  • outdoor air that does not pass through the outdoor heat exchanger is introduced from the suction opening when the outdoor fan is in operation and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. .
  • the outdoor unit of the air conditioner according to the sixth aspect of the present invention is the outdoor unit of the air conditioner according to the fifth aspect, and the adsorbing member is disposed so as to face the suction opening.
  • outside air is introduced from the suction opening when the outdoor fan is operated and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Accordingly, the upstream end of the bell mouth and the downstream end of the air flow path are adjacent to each other, so that the negative pressure effect at the upstream end of the bell mouth can be received more. As a result, more outside air can be introduced from the suction opening.
  • outside air is introduced from the suction opening when the outdoor fan is operated and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Since it is reasonable to introduce the air introduced from the suction opening to the suction side of the suction member, the negative pressure at the upstream end of the bell mouth is more increased by arranging the suction side closer to the bell mouth. Can receive. As a result, more outside air can be introduced from the suction opening.
  • the outdoor unit for an air conditioner according to the fourth aspect of the present invention has the same effects as the outdoor unit for an air conditioner according to any one of the first to third aspects.
  • the outdoor air that does not pass through the outdoor heat exchanger is caused by the negative pressure on the suction side of the outdoor fan, that is, the upstream end of the bell mouth, due to the operation of the outdoor fan. Is introduced from the suction opening.
  • the outdoor unit for an air conditioner according to the sixth aspect of the present invention has the same effects as the outdoor unit for an air conditioner according to the fifth aspect.
  • the block diagram of the freezing apparatus provided with the outdoor unit which concerns on one Embodiment of this invention The top view of the outdoor unit in the state where the top plate was removed.
  • the front view of the outdoor unit which concerns on the modification of the state from which the front board was removed.
  • the perspective view which shows the positional relationship of the bell mouth and humidification unit in FIG.
  • FIG. 1 is a configuration diagram of a refrigeration apparatus including an outdoor unit 30 according to an embodiment of the present invention.
  • the refrigeration apparatus is an air conditioner 10 that includes an indoor unit 20, an outdoor unit 30, and refrigerant communication pipes 14 and 16 that connect them.
  • the air conditioner 10 has a plurality of operation modes such as a cooling operation, a heating operation, a dehumidifying operation, a humidifying operation, and an air supply operation, and these operation modes can be appropriately combined.
  • the indoor unit 20 is provided with an indoor heat exchanger 21, and the outdoor unit 30 includes a compressor 31, a four-way switching valve 32, an outdoor heat exchanger 33, an electric expansion valve 34, an accumulator 36, a liquid side closing valve 37, and a gas.
  • a side closing valve 38 is provided.
  • air is moved between the indoor unit 20 and the outdoor unit 30 through the air supply hose 18 in order to supply the outdoor air into the room.
  • moisture is taken in from outside air in the outdoor unit 30 in order to supply high humidity air containing a lot of moisture from the outdoor unit 30 to the indoor unit 20.
  • the humidifying unit 60 is provided in the outdoor unit 30, and the humidifying unit 60 has a function of taking moisture from the outside air.
  • the indoor unit 20 is provided with an indoor fan 22 driven by a motor on the downstream side of the indoor heat exchanger 21 as shown in FIG.
  • the indoor fan 22 is a cross flow fan. When the indoor fan 22 is driven, the indoor air sucked from the suction port 23 at the top of the indoor unit 20 passes through the indoor heat exchanger 21 and is blown out from the outlet 24 at the bottom of the indoor unit 20.
  • the air supply port 25 of the air supply hose 18 is provided in the upstream space of the indoor heat exchanger 21.
  • the air supply hose 18 is connected to the humidification unit 60, and high-humidity air sent from the humidification unit 60 is supplied from the air supply port 25 to the upstream space of the indoor heat exchanger 21.
  • the humidity of the conditioned air blown out from the outlet 24 of the indoor unit 20 can be increased.
  • FIG. 2 is a plan view of the outdoor unit 30 with the top plate 48 removed.
  • FIG. 3 is a front view of the outdoor unit 30 with the protective grill 56 removed from the outdoor unit 30 of FIG.
  • the outdoor unit 30 includes a casing 40, an outdoor heat exchanger 33, an outdoor fan 39, and a humidifying unit 60.
  • the outdoor fan 39 When the outdoor fan 39 is driven, outside air is sucked in from the rear surface side of the outdoor heat exchanger 33, passes through the outdoor heat exchanger 33, and is blown out from the outlet 46a (see FIG. 3).
  • the front surface of the outlet 46a is covered with a protective grill 56 (see FIG. 2) so that the propeller 39b cannot be touched from the outside.
  • At least a part of the humidification unit 60 is disposed in the blower chamber 41 of the outdoor unit 30, and the other is disposed in the machine chamber 42.
  • the casing 40 is a casing including a left side plate 45, a front plate 46, a right side plate 47, a top plate 48 (see FIG. 3), a bottom plate 49 (see FIG. 3), and a back surface portion 44. It is divided into a fan room 41 and a machine room 42. In the blower chamber 41, an outdoor heat exchanger 33 and an outdoor fan 39 are arranged. In the machine room 42, the compressor 31 and a part of the humidification unit 60 are arranged.
  • the partition member 43 extends substantially in parallel with the right side plate 47 from the top plate 48 side toward the bottom plate 49 side.
  • the partition member 43 extends in an arc shape from the inner surface side of the front plate 46 toward the right end of the outdoor heat exchanger 33.
  • the partition member 43 has a function of shielding the wind from flowing from the blower chamber 41 to the machine chamber 42.
  • the front plate 46 is formed with a circular outlet 46a.
  • a ring-shaped bell mouth 52 is attached to the air outlet 46a along the peripheral edge thereof.
  • (3-2-2) Compressor 31 As shown in FIG. 1, the compressor 31 is located on the machine room 42 side and is fixed to the bottom plate 49. During operation, the compressor 31 is at a high temperature, so that the temperature in the machine room 42 is higher than that in the blower room 41.
  • the electrical component unit 50 is located in the blower chamber 41 and has a control board on which electronic components for driving the compressor 31, the outdoor fan 39, and the like are integrated.
  • the outdoor heat exchanger 33 is formed in an L shape so as to face the back surface portion 44 and the left side plate 45 of the casing 40. Further, the height of the outdoor heat exchanger 33 has a dimension substantially equal to the distance between the top plate 48 and the bottom plate 49.
  • Outdoor fan 39 The outdoor fan 39 has a propeller 39b driven by a fan motor 39a, and is provided on the downstream side of the outdoor heat exchanger 33. A part of the propeller 39b is arranged so as to enter a space surrounded by the bell mouth 52.
  • FIG. 2 the protective grill 56 is attached to the front plate 46 of the casing 40 and covers the outlet 46a.
  • the protective grill 56 is formed with a plurality of openings for blowing out the outside air.
  • Partition member 43 partitions the blower chamber 41 and the machine chamber 42 inside the casing 40.
  • the humidification unit 60 since the humidification unit 60 is disposed at the upper part of the machine room 42, the humidification unit 60 also serves as a part of the upper part of the partition member 43.
  • the humidifying unit 60 is disposed between the front plate 46 and the back surface portion 44 so as to straddle the blower chamber 41 and the machine chamber 42.
  • the humidification unit 60 includes a humidification rotor 63, an adsorption duct 68, a heater 71, a humidification duct 73, a fan 75 (see FIG. 1), and a humidification second duct 180.
  • the humidification rotor 63 has a disc shape and is disposed so as to face the suction opening 46 b of the front plate 46, and can be rotated by driving a motor.
  • the suction opening 46b has a sector shape with a central angle of about 240 °, and the central axis of the fan and the rotation central axis of the humidification rotor 63 are located on the same axis.
  • the entire circumference of the humidification rotor 63 is surrounded by a wall.
  • the humidification rotor 63 adsorbs moisture in a fan-shaped region having a central angle of 240 ° facing the suction opening 46b, this region is referred to as a moisture adsorption region 63a. Further, the humidifying rotor 63 discharges moisture in a fan-shaped region with a central angle of 120 ° that is adjacent to the moisture adsorption region 63a and does not face the suction opening 46b. Therefore, this region is referred to as a moisture release region 63b.
  • the portion that was the moisture adsorption region 63a becomes the moisture release region 63b and the portion that was the moisture release region 63b becomes the moisture adsorption region 63a depending on the rotation angle.
  • FIG. 4 is a perspective view showing a humidification rotor and a flow of air passing through the humidification rotor.
  • the humidifying rotor 63 is provided with a gear 63 t around it. Further, as shown in FIG. 3, the gear 63t meshes with the pinion gear 64a, and when the pinion gear 64a is rotated by the power of the rotor driving motor 64, the entire humidification rotor 63 is rotated together with the gear 64t.
  • the moisture adsorption region 63a and the moisture release region 63b have a honeycomb structure formed by firing of zeolite or the like.
  • Adsorbents such as zeolite adsorb moisture from air at room temperature and release moisture when the temperature rises due to exposure to air heated by a heater or the like.
  • the heater 71 is disposed between the moisture release region 63b of the humidification rotor 63 and the front plate 46 so as to face the moisture release region 63b.
  • FIG. 5 is a perspective view of the humidifying unit 60 with the heater 71 removed.
  • the humidifying unit 60 is provided with an adsorption duct 68 for guiding outside air to the moisture adsorption region 63a.
  • the suction duct 68 forms an air inlet 681 that opens toward the suction opening 64 b of the front plate 46.
  • the shape of the air inlet 681 has a sector shape with a central angle of about 240 °, like the suction opening 46b.
  • the air containing moisture is sucked from the air inlet 681 and then flows through the adsorption duct 68 to reach the moisture adsorption region 63a of the humidification rotor 63.
  • the air outlet 683 is adjacent to a space that becomes negative pressure when the outdoor fan 39 rotates (that is, the upstream end of the bell mouth 52), and the air pressure on the air outlet 683 side is the air inlet 681 side. Due to the lowering action, air is sucked in from the air inlet 681.
  • the moisture adsorption region 63a is disposed closer to the bell mouth 52 than the moisture release region 63b.
  • the suction opening 46b is provided on the upper right side of the air outlet 46a of the front plate 46, and opens toward the front of the front plate 46 in the same manner as the air outlet 46a.
  • the air pushed forward by the outdoor fan 39 travels along the bell mouth 52 and is blown out from the blowout port 46a, so that the air blown out from the blowout port 46a is not sucked from the suction opening 46b.
  • the purpose of adopting the above configuration is to take in more air containing moisture.
  • the air that has passed through the outdoor heat exchanger 33 has low temperature and low humidity. For this reason, when low-temperature air is inhaled, the amount of moisture that can be adsorbed by the humidifying rotor 63 decreases.
  • the suction opening 64b and the air inlet 681 are configured not to suck the air that has passed through the outdoor heat exchanger 33, it is possible to take in outside air containing more moisture, so that the moisture amount adsorbed by the humidifying rotor 63 is increased. Can be prevented from decreasing.
  • the heater 71 heats the air sent to the moisture release region 63b in order to release moisture from the moisture release region 63b of the humidification rotor 63.
  • the heated air releases moisture from the humidification rotor 63 when passing through the moisture release region 63b, and enters the humidification duct 73 as humid air.
  • the humidification duct 73 guides air to the moisture release region 63 b via the heater 71, and further guides the air that has passed through the humidification rotor 63 to the fan 75.
  • the air flow guided to the humidifying duct 73 is generated by the fan 75.
  • the air guided to the humidification duct 73 is heated by the heater 71 to become high-temperature air, and further, when passing through the humidification rotor 63, moisture is released from the moisture release region 63b to become high-temperature and high-humidity air to the fan 75. Head over.
  • the fan 75 includes an impeller 75a that sends out humidified air in a predetermined direction, and a fan motor 75b that drives the impeller 75a.
  • the fan 75 is arranged in such a posture that the rotation shaft of the impeller 75a is in the horizontal direction, and the rotation shaft of the fan motor 75b is directly connected to the rotation shaft of the impeller 75a.
  • the fan 75 is disposed in the machine room 42.
  • the impeller 75a is surrounded by a fan casing 81, and the fan casing 81 and the inlet of the humidifying second duct 180 are connected.
  • the fan motor 75b is covered with a motor cover 82 on the outside.
  • Humidification second duct 180 is a duct that guides high-temperature and high-humidity air pushed out from the fan 75 to the connection port of the air supply hose 18 (see FIG. 1). Almost all of the humidifying second duct 180 is located in the machine room 42, but only a predetermined portion including the connection port with the air supply hose 18 is located on the opposite side of the machine room 42 with the right side plate 47 interposed therebetween. (See FIG. 2).
  • the humidifying second duct 180 has a horizontal duct portion 181 and a vertical duct portion 182.
  • the horizontal duct portion 181 is a duct that guides the high-temperature high-humidity air horizontally
  • the vertical duct portion 182 is a duct that guides the high-temperature high-humidity air flowing into the horizontal duct portion 181 downward.
  • the horizontal duct portion 181 extends from the machine room 42 toward the rear end of the right side plate 47.
  • the vertical duct portion 182 extends vertically downward from the connection port with the horizontal duct portion 181, and the end is connected to the air supply hose 18.
  • liquid side closing valve 37 and the gas side closing valve 38 are in an open state.
  • the opening degree of the electric expansion valve 34 is adjusted so that the superheat degree SH of the refrigerant at the refrigerant outlet of the indoor heat exchanger 21 is constant at the superheat degree target value.
  • the low-pressure gas refrigerant is sucked into the compressor 31 and compressed to become a high-pressure gas refrigerant.
  • the high-pressure gas refrigerant is sent to the outdoor heat exchanger 33 via the four-way switching valve 32, exchanges heat with the outdoor air supplied by the outdoor fan 39, and condenses to form a high-pressure liquid refrigerant.
  • the high-pressure liquid refrigerant is decompressed by the electric expansion valve 34 and then sent to the indoor unit 20 via the liquid-side closing valve 37 and the liquid refrigerant communication pipe 14.
  • the low-pressure refrigerant sent to the indoor unit 20 becomes a gas-liquid two-phase refrigerant, enters the indoor heat exchanger 15, performs heat exchange with the indoor air in the indoor heat exchanger 15, evaporates, and is low-pressure. It becomes a gas refrigerant.
  • the low-pressure gas refrigerant is sent to the outdoor unit 30 via the gas refrigerant communication pipe 16 and flows into the accumulator 36 via the gas-side closing valve 38 and the four-way switching valve 32. Then, the low-pressure gas refrigerant that has flowed into the accumulator 36 is again sucked into the compressor 31.
  • the air conditioner 10 can perform a cooling operation in which the outdoor heat exchanger 33 functions as a refrigerant condenser and the indoor heat exchanger 21 functions as a refrigerant evaporator.
  • the four-way switching valve 32 connects the discharge side of the compressor 31 and the gas side of the indoor heat exchanger 21, and the suction side of the compressor 31 and the outdoor heat exchanger. 33 is connected to the gas side (indicated by a broken line in FIG. 1).
  • the opening degree of the electric expansion valve 34 is adjusted so that the refrigerant flowing into the outdoor heat exchanger 33 is reduced to a pressure at which the outdoor heat exchanger 33 can evaporate.
  • the liquid side closing valve 37 and the gas side closing valve 38 are open.
  • the compressor 31, the outdoor fan 39, and the indoor fan 22 are operated in the state of this refrigerant circuit, the low-pressure gas refrigerant is sucked into the compressor 31 and compressed to become a high-pressure gas refrigerant, and the four-way switching valve 32, The gas is sent to the indoor unit 20 via the gas-side closing valve 38 and the gas refrigerant communication pipe 16.
  • the high-pressure gas refrigerant sent to the indoor unit 20 is condensed by exchanging heat with indoor air in the indoor heat exchanger 21, and becomes a high-pressure liquid refrigerant. Sent.
  • the liquid refrigerant passes through the liquid side closing valve 37 and enters the electric expansion valve 34.
  • the liquid refrigerant is decompressed by the electric expansion valve 34 and then flows into the outdoor heat exchanger 33.
  • the low-pressure gas-liquid two-phase refrigerant flowing into the outdoor heat exchanger 33 exchanges heat with the outdoor air supplied by the outdoor fan 39 to evaporate into a low-pressure gas refrigerant, and passes through the four-way switching valve 32. And flows into the accumulator 36.
  • the low-pressure gas refrigerant that has flowed into the accumulator 36 is again sucked into the compressor 31.
  • the humidification operation is performed in combination with the heating operation.
  • the air inlet 681 (see FIG. 5) of the adsorption duct 68 opens toward the suction opening 64 b (see FIG. 3) of the front plate 46, and the air outlet 683. (See FIG. 2) is adjacent to the upstream end of the bell mouth 52, which becomes negative pressure when the outdoor fan 39 rotates.
  • the air pressure on the air outlet 683 side becomes lower than that on the air inlet 681 side.
  • the “outside air containing moisture that has not passed through the outdoor heat exchanger 33” is Inhaled.
  • the humidification rotor 63 is located between the air inlet 681 and the air outlet 683 and in the vicinity of the air outlet 683, and is rotated at a predetermined rotational speed by the power of the rotor driving motor 64 during the humidifying operation. Due to the rotation of the humidification rotor 63, the moisture adsorbed to the humidification rotor 63 in the moisture adsorption region 63a is carried to the moisture release region 63b along with the rotation of the humidification rotor 63, and comes to a position facing the heater 71.
  • the fan 75 since the fan 75 is also driven, the outside air flows around the heater 71 and is heated. Since the heated air passes through the moisture release region 63b of the humidification rotor 63, moisture is released from the portion exposed to the heated air. Air containing moisture (hereinafter referred to as humidified air) is sucked into the fan 75 and blown out to the air supply hose 18 through the humidifying second duct 180. The humidified air is guided to the indoor unit 20 through the air supply hose 18.
  • humidified air Air containing moisture
  • FIG. 6 is a front view of an outdoor unit 30 according to a modification in a state in which the front plate is removed.
  • FIG. 7 is a perspective view showing the positional relationship between the bell mouth 52 and the humidifying unit 60 in FIG.
  • the outlet 46a and the suction opening 46b in the front plate 46 are not arranged side by side on the vertical axis or the horizontal axis of the outlet 46a. It is reasonable, and the suction opening 46b is disposed between the outlet 46a and the upper right corner of the front plate 46.
  • the center-to-center distance between the air outlet 46a and the suction opening 46b is the center-to-center distance between the bell mouth 52 and the suction duct 68, and is set to the shortest distance in which the outer peripheries of the both do not interfere with each other.
  • the ideal configuration in which the negative pressure at the upstream end of the bell mouth 52 effectively acts on the air outlet 683 is that the central axis of the bell mouth 52 and the central axis of the suction duct 68 intersect at one point. It is to be.
  • the central axis of the bell mouth 52 and the central axis of the adsorption duct 68 intersect at one point. Cannot be adopted.
  • the humidification rotor 63 is inclined so that the negative pressure at the upstream end of the bell mouth 52 effectively acts on the air outlet 683 of the adsorption duct 68.
  • the plate surface of the humidifying rotor 63 is inclined by a predetermined angle ⁇ with respect to the opening surface of the bell mouth 52, and the predetermined angle ⁇ is within a range of 5 ° to 45 °, which is recommended. The value is 30 °.
  • the plate surface of the humidifying rotor 63 is inclined by a predetermined angle ⁇ with respect to the opening surface of the bell mouth 52, the upstream end of the bell mouth 52 and the air outlet 683 are closer to each other. The effect of the negative pressure at the upstream end of the bell mouth 52 can be received more. As a result, more outside air can be introduced from the suction opening 46b.
  • an outdoor unit of an air conditioner provided with a humidifying unit not only an outdoor unit of an air conditioner provided with a humidifying unit, but other units are arranged so as to straddle the two spaces in a casing divided into two spaces by a partition member. It is also useful for equipment to be used.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Central Air Conditioning (AREA)
  • Air Humidification (AREA)

Abstract

The purpose of the present invention is to provide an outdoor unit for an air conditioner that is capable of ensuring air flow through an adsorbing member, independent of the air flow through an outdoor heat exchanger. In an outdoor unit (30), air that does not pass through an outdoor heat exchanger (33) flows in from an intake opening (46b). As a result, when frost forms on the outdoor heat exchanger (33), an amount of air equivalent to the air flow reduced by the increase in air circulation resistance in the outdoor heat exchanger (33) is introduced through the intake opening (46b), and the adsorbed air flow increases, conversely to the decline in adsorbed air flow that has occurred during frost formation hitherto.

Description

空調機の室外ユニットAir conditioner outdoor unit
　本発明は、空調機の室外ユニットに関し、特に加湿機能を有する空調機の室外ユニットに関する。 The present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of an air conditioner having a humidifying function.
　特許文献１（特開２００８－１９０８２８号公報）に開示されている加湿機能付き室外ユニットでは、その前面と平行に配置された板状の吸着部材に室外熱交換器を通過した空気が流れるという構成である。 In the outdoor unit with a humidifying function disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-190828), the configuration is such that air that has passed through the outdoor heat exchanger flows through a plate-like adsorbing member arranged in parallel to the front surface thereof. It is.
　しかし、上記構成では室外熱交換器の通風抵抗が大きく、吸着部材を透過させる風量を増加させることは困難であり、さらに室外熱交換器への着霜が始まるとさらに通風抵抗が増加して吸着部材への風量が減少するので、加湿性能向上の枷となっている。 However, in the above configuration, the ventilation resistance of the outdoor heat exchanger is large, and it is difficult to increase the amount of air passing through the adsorption member. Further, when frosting on the outdoor heat exchanger starts, the ventilation resistance further increases and the adsorption is increased. Since the air volume to the member is reduced, it is a key to improving the humidification performance.
　本発明の課題は、吸着部材を透過させる風量を、室外熱交換器を通過する風量に依存せずに確保することができる、空調機の室外ユニットを提供することにある。 An object of the present invention is to provide an outdoor unit of an air conditioner that can secure an air volume that permeates an adsorbing member without depending on an air volume that passes through an outdoor heat exchanger.
　本発明の第１観点に係る空調機の室外ユニットは、空気中の水分を吸着した後に加熱されることによって水分を放出する板状の吸着部材をその表面が鉛直面に沿うように配置した、空調機の室外ユニットであって、外郭を形成する本体ケーシングと、本体ケーシングに収納される室外熱交換器と、室外ファンとを備えている。室外ファンは、本体ケーシングに収納され、室外熱交換器を通過する空気流を生成する。本体ケーシングは、吹出口と吸込開口とを有している。吹出口は、室外ファンからの空気が吹き出される。吸込開口は、吹出口とは異なる位置に設けられ、室外熱交換器を通過しない空気を導入する。本体ケーシング内には、室外ファンが空気流を生成する際に生じる負圧によって、吸込開口から導入された空気を吸着部材へ流して吸着部材内を通過させる空気流路が形成されている。 In the outdoor unit of the air conditioner according to the first aspect of the present invention, a plate-like adsorbing member that releases moisture by being heated after adsorbing moisture in the air is disposed so that the surface thereof is along the vertical plane. An outdoor unit of an air conditioner, which includes a main body casing that forms an outer shell, an outdoor heat exchanger that is housed in the main body casing, and an outdoor fan. The outdoor fan is housed in the main casing and generates an air flow that passes through the outdoor heat exchanger. The main body casing has a blower outlet and a suction opening. Air from the outdoor fan is blown out from the outlet. The suction opening is provided at a position different from the air outlet and introduces air that does not pass through the outdoor heat exchanger. An air flow path is formed in the main casing to allow the air introduced from the suction opening to flow through the adsorption member and pass through the adsorption member due to the negative pressure generated when the outdoor fan generates an air flow.
　この空調機の室外ユニットでは、室外ファン稼動時の負圧の作用によって、室外熱交換器を通過しない空気が吸込開口から流入する上、室外熱交換器への着霜が発生した際には室外熱交換器の通風抵抗増加で減少した風量に相当する量の空気が当該吸込開口から導入されることになり、［着霜時に吸着風量が低下していた従来］とは逆に吸着風量が増加する。 In the outdoor unit of this air conditioner, air that does not pass through the outdoor heat exchanger flows from the suction opening due to the negative pressure when the outdoor fan is operating, and when the outdoor heat exchanger is frosted, The amount of air equivalent to the reduced air volume due to the increased airflow resistance of the heat exchanger will be introduced from the suction opening, and the adsorbed air volume will increase as opposed to the conventional case where the adsorbed air volume decreased during frost formation. To do.
　本発明の第２観点に係る空調機の室外ユニットは、第１観点に係る空調機の室外ユニットであって、室外ファンからの空気を吹出口へ案内するベルマウスをさらに備えている。そして、ベルマウスにおける空気流れ方向の上流側端部と、上記空気流路における空気流れ方向の下流側端部とが隣接している。 The outdoor unit of the air conditioner according to the second aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect, and further includes a bell mouth that guides air from the outdoor fan to the outlet. And the upstream edge part of the air flow direction in a bell mouth and the downstream edge part of the air flow direction in the said air flow path are adjacent.
　この空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって吸込開口から外気が導入される。したがって、ベルマウスの上流側端部と空気流路の下流側端部とが隣接することによってベルマウスの上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口からより多くの外気を流入させることができる。 In the outdoor unit of this air conditioner, outside air is introduced from the suction opening when the outdoor fan is in operation, and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Accordingly, the upstream end of the bell mouth and the downstream end of the air flow path are adjacent to each other, so that the negative pressure effect at the upstream end of the bell mouth can be received more. As a result, more outside air can be introduced from the suction opening.
　本発明の第３観点に係る空調機の室外ユニットは、第１観点又は第２観点に係る空調機の室外ユニットであって、吸着部材では、空気流路を流れる空気中の水分を吸着する吸着側と、吸着した水分を放出する放出側とが並存し、吸着側がベルマウス寄りに配置されている。 The outdoor unit of the air conditioner according to the third aspect of the present invention is the outdoor unit of the air conditioner according to the first aspect or the second aspect, and the adsorption member adsorbs moisture in the air flowing through the air flow path. The side and the discharge side for releasing the adsorbed moisture coexist, and the adsorption side is arranged closer to the bell mouth.
　この空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって吸込開口から外気が導入される。吸込開口から導入された空気は吸着部材の吸着側に導かれるのが合理的であるから、吸着側がベルマウス寄りに配置されることによってベルマウスの上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口からより多くの外気を流入させることができる。 In the outdoor unit of this air conditioner, outside air is introduced from the suction opening when the outdoor fan is in operation, and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Since it is reasonable to introduce the air introduced from the suction opening to the suction side of the suction member, the negative pressure at the upstream end of the bell mouth is more increased by arranging the suction side closer to the bell mouth. Can receive. As a result, more outside air can be introduced from the suction opening.
　本発明の第４観点に係る空調機の室外ユニットは、第１観点から第３観点のいずれか１つに係る空調機の室外ユニットであって、吸着部材が、本体ケーシングの前面部と平行に配置されている。 An outdoor unit of an air conditioner according to a fourth aspect of the present invention is an outdoor unit of an air conditioner according to any one of the first to third aspects, wherein the adsorption member is parallel to the front surface portion of the main casing. Has been placed.
　本発明の第５観点に係る空調機の室外ユニットは、第２観点から第４観点のいずれか１つに係る空調機の室外ユニットであって、吸込開口及びベルマウスの開口が、本体ケーシングの前面部に設けられている。 An outdoor unit of an air conditioner according to a fifth aspect of the present invention is an outdoor unit of an air conditioner according to any one of the second to fourth aspects, wherein the suction opening and the bell mouth opening are provided on the body casing. It is provided in the front part.
　この空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって、室外熱交換器を通過しない外気が吸込開口から導入される。 In the outdoor unit of this air conditioner, outdoor air that does not pass through the outdoor heat exchanger is introduced from the suction opening when the outdoor fan is in operation and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. .
　本発明の第６観点に係る空調機の室外ユニットは、第５観点に係る空調機の室外ユニットであって、吸着部材が、吸込開口と対向するように配置されている。 The outdoor unit of the air conditioner according to the sixth aspect of the present invention is the outdoor unit of the air conditioner according to the fifth aspect, and the adsorbing member is disposed so as to face the suction opening.
　本発明の第１観点に係る空調機の室外ユニットでは、室外ファン稼動時の負圧の作用によって、室外熱交換器を通過しない空気が吸込開口から流入する上、室外熱交換器への着霜が発生した際には室外熱交換器の通風抵抗増加で減少した風量に相当する量の空気が当該吸込開口から導入されることになり、［着霜時に吸着風量が低下していた従来］とは逆に吸着風量が増加する。 In the outdoor unit of the air conditioner according to the first aspect of the present invention, air that does not pass through the outdoor heat exchanger flows in from the suction opening due to the negative pressure when the outdoor fan is operating, and frost forms on the outdoor heat exchanger. When this occurs, an amount of air corresponding to the amount of air decreased due to the increase in the airflow resistance of the outdoor heat exchanger will be introduced from the suction opening, and [the conventional method in which the amount of air adsorbed has decreased during frost formation] Conversely, the amount of adsorption air increases.
　本発明の第２観点に係る空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって吸込開口から外気が導入される。したがって、ベルマウスの上流側端部と空気流路の下流側端部とが隣接することによってベルマウスの上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口からより多くの外気を流入させることができる。 In the outdoor unit of the air conditioner according to the second aspect of the present invention, outside air is introduced from the suction opening when the outdoor fan is operated and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Accordingly, the upstream end of the bell mouth and the downstream end of the air flow path are adjacent to each other, so that the negative pressure effect at the upstream end of the bell mouth can be received more. As a result, more outside air can be introduced from the suction opening.
　本発明の第３観点に係る空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって吸込開口から外気が導入される。吸込開口から導入された空気は吸着部材の吸着側に導かれるのが合理的であるから、吸着側がベルマウス寄りに配置されることによってベルマウスの上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口からより多くの外気を流入させることができる。 In the outdoor unit of the air conditioner according to the third aspect of the present invention, outside air is introduced from the suction opening when the outdoor fan is operated and the suction side of the outdoor fan, that is, the upstream end of the bell mouth becomes negative pressure. Since it is reasonable to introduce the air introduced from the suction opening to the suction side of the suction member, the negative pressure at the upstream end of the bell mouth is more increased by arranging the suction side closer to the bell mouth. Can receive. As a result, more outside air can be introduced from the suction opening.
　本発明の第４観点に係る空調機の室外ユニットでは、第１観点から第３観点のいずれか１つに係る空調機の室外ユニットと同等の効果を奏する。 The outdoor unit for an air conditioner according to the fourth aspect of the present invention has the same effects as the outdoor unit for an air conditioner according to any one of the first to third aspects.
　本発明の第５観点に係る空調機の室外ユニットでは、室外ファンの稼動により室外ファンの吸込側、つまりベルマウスの上流側端部が負圧になることによって、室外熱交換器を通過しない外気が吸込開口から導入される。 In the outdoor unit of the air conditioner according to the fifth aspect of the present invention, the outdoor air that does not pass through the outdoor heat exchanger is caused by the negative pressure on the suction side of the outdoor fan, that is, the upstream end of the bell mouth, due to the operation of the outdoor fan. Is introduced from the suction opening.
　本発明の第６観点に係る空調機の室外ユニットでは、第５観点に係る空調機の室外ユニットと同等の効果を奏する。 The outdoor unit for an air conditioner according to the sixth aspect of the present invention has the same effects as the outdoor unit for an air conditioner according to the fifth aspect.
本発明の一実施形態に係る室外ユニットを備えた冷凍装置の構成図。The block diagram of the freezing apparatus provided with the outdoor unit which concerns on one Embodiment of this invention. 天板が取り外された状態の室外ユニットの平面図。The top view of the outdoor unit in the state where the top plate was removed. 前板から防護用グリルが取り外された状態の室外ユニットの正面図。The front view of the outdoor unit in the state where the protective grille was removed from the front plate. 加湿ロータ及び加湿ロータを通過する空気の流れを示す斜視図。The perspective view which shows the flow of the air which passes a humidification rotor and a humidification rotor. ヒータを取り外した状態の加湿ユニットの斜視図。The perspective view of the humidification unit of a state which removed the heater. 前板が取り外された状態の変形例に係る室外ユニットの正面図。The front view of the outdoor unit which concerns on the modification of the state from which the front board was removed. 図６におけるベルマウスと加湿ユニットとの位置関係を示す斜視図。The perspective view which shows the positional relationship of the bell mouth and humidification unit in FIG.
　以下、図面を参照しながら、本発明の実施形態について説明する。なお、以下の実施形態は、本発明の具体例であって、本発明の技術的範囲を限定するものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.
　（１）空調機１０の構成の概要
　図１は、本発明の一実施形態に係る室外ユニット３０を備えた冷凍装置の構成図である。図１において、冷凍装置は、室内ユニット２０と、室外ユニット３０と、それらを接続する冷媒連絡配管１４，１６を備えた空調機１０である。空調機１０は、冷房運転、暖房運転、除湿運転、加湿運転、及び給気運転などの複数の運転モードを持っており、これらの運転モードを適宜組み合わせることもできる。 (1) Outline of Configuration of Air Conditioner 10 FIG. 1 is a configuration diagram of a refrigeration apparatus including an outdoor unit 30 according to an embodiment of the present invention. In FIG. 1, the refrigeration apparatus is an air conditioner 10 that includes an indoor unit 20, an outdoor unit 30, and refrigerant communication pipes 14 and 16 that connect them. The air conditioner 10 has a plurality of operation modes such as a cooling operation, a heating operation, a dehumidifying operation, a humidifying operation, and an air supply operation, and these operation modes can be appropriately combined.
　室内ユニット２０には室内熱交換器２１が設けられ、室外ユニット３０には圧縮機３１、四路切換弁３２、室外熱交換器３３、電動膨張弁３４、アキュムレータ３６、液側閉鎖弁３７及びガス側閉鎖弁３８が設けられている。 The indoor unit 20 is provided with an indoor heat exchanger 21, and the outdoor unit 30 includes a compressor 31, a four-way switching valve 32, an outdoor heat exchanger 33, an electric expansion valve 34, an accumulator 36, a liquid side closing valve 37, and a gas. A side closing valve 38 is provided.
　また、加湿運転、及び給気運転では、室内に外気を供給するため、給気ホース１８を通して室内ユニット２０と室外ユニット３０との間で空気の移動がある。特に、加湿運転では、水分を多く含んだ湿度の高い空気を室外ユニット３０から室内ユニット２０に供給するため室外ユニット３０において外気から水分を取り込む。 Further, in the humidifying operation and the air supply operation, air is moved between the indoor unit 20 and the outdoor unit 30 through the air supply hose 18 in order to supply the outdoor air into the room. In particular, in the humidifying operation, moisture is taken in from outside air in the outdoor unit 30 in order to supply high humidity air containing a lot of moisture from the outdoor unit 30 to the indoor unit 20.
　本実施形態では、加湿ユニット６０が室外ユニット３０内に設けられており、加湿ユニット６０が外気から水分を取り込む機能を有している。 In the present embodiment, the humidifying unit 60 is provided in the outdoor unit 30, and the humidifying unit 60 has a function of taking moisture from the outside air.
　（２）室内ユニット２０の構成
　室内ユニット２０には、図１に示すようにモータで駆動される室内ファン２２が室内熱交換器２１の下流側に設けられている。室内ファン２２は、クロスフローファンである。室内ファン２２が駆動されると、室内ユニット２０上部の吸込口２３から吸い込まれた室内空気は、室内熱交換器２１を通過して室内ユニット２０下部の吹出口２４から吹き出される。 (2) Configuration of Indoor Unit 20 The indoor unit 20 is provided with an indoor fan 22 driven by a motor on the downstream side of the indoor heat exchanger 21 as shown in FIG. The indoor fan 22 is a cross flow fan. When the indoor fan 22 is driven, the indoor air sucked from the suction port 23 at the top of the indoor unit 20 passes through the indoor heat exchanger 21 and is blown out from the outlet 24 at the bottom of the indoor unit 20.
　また、室内ユニット２０には、給気ホース１８の給気口２５が、室内熱交換器２１の上流側空間に設けられている。給気ホース１８は加湿ユニット６０に接続されており、加湿ユニット６０から送られてくる湿度の高い空気が給気口２５から室内熱交換器２１の上流側空間に供給される。このような湿度の高い空気が給気口２５から供給されている状態で室内ファン２２を駆動することにより、室内ユニット２０の吹出口２４から吹き出される調和空気の湿度を高くすることができる。 In the indoor unit 20, the air supply port 25 of the air supply hose 18 is provided in the upstream space of the indoor heat exchanger 21. The air supply hose 18 is connected to the humidification unit 60, and high-humidity air sent from the humidification unit 60 is supplied from the air supply port 25 to the upstream space of the indoor heat exchanger 21. By driving the indoor fan 22 in a state where such high-humidity air is supplied from the air supply port 25, the humidity of the conditioned air blown out from the outlet 24 of the indoor unit 20 can be increased.
　（３）室外ユニット３０の構成
　（３－１）全体構成
　図２は、天板４８が取り外された状態の室外ユニット３０の平面図である。また、図３は、図２の室外ユニット３０から防護用グリル５６が取り外された状態の当該室外ユニット３０の正面図である。 (3) Configuration of Outdoor Unit 30 (3-1) Overall Configuration FIG. 2 is a plan view of the outdoor unit 30 with the top plate 48 removed. FIG. 3 is a front view of the outdoor unit 30 with the protective grill 56 removed from the outdoor unit 30 of FIG.
　図１～図３において、室外ユニット３０は、ケーシング４０、室外熱交換器３３、室外ファン３９、加湿ユニット６０を備えている。室外ファン３９が駆動されると、外気が室外熱交換器３３の後面側から吸い込まれ、室外熱交換器３３を通過し、吹出口４６ａ（図３参照）から吹き出される。通常、吹出口４６ａの前面は防護用グリル５６（図２参照）で覆われており、外部からプロペラ３９ｂに触れられないようになっている。 1 to 3, the outdoor unit 30 includes a casing 40, an outdoor heat exchanger 33, an outdoor fan 39, and a humidifying unit 60. When the outdoor fan 39 is driven, outside air is sucked in from the rear surface side of the outdoor heat exchanger 33, passes through the outdoor heat exchanger 33, and is blown out from the outlet 46a (see FIG. 3). Normally, the front surface of the outlet 46a is covered with a protective grill 56 (see FIG. 2) so that the propeller 39b cannot be touched from the outside.
　加湿ユニット６０の少なくとも一部は室外ユニット３０の送風機室４１に配置され、他は機械室４２に配置される。 At least a part of the humidification unit 60 is disposed in the blower chamber 41 of the outdoor unit 30, and the other is disposed in the machine chamber 42.
　（３－２）詳細構成
　（３－２－１）ケーシング４０
　ケーシング４０は、左側板４５、前板４６、右側板４７、天板４８（図３参照）、底板４９（図３参照）、及び背面部４４からなる筐体であり、内部を仕切部材４３によって送風機室４１と機械室４２とに分けられている。送風機室４１には、室外熱交換器３３及び室外ファン３９が配置されている。機械室４２には、圧縮機３１及び加湿ユニット６０の一部が配置されている。 (3-2) Detailed configuration (3-2-1) Casing 40
The casing 40 is a casing including a left side plate 45, a front plate 46, a right side plate 47, a top plate 48 (see FIG. 3), a bottom plate 49 (see FIG. 3), and a back surface portion 44. It is divided into a fan room 41 and a machine room 42. In the blower chamber 41, an outdoor heat exchanger 33 and an outdoor fan 39 are arranged. In the machine room 42, the compressor 31 and a part of the humidification unit 60 are arranged.
　仕切部材４３は、天板４８側から底板４９側に向って右側板４７と略並行に延びている。また、仕切部材４３は、前板４６内面側から室外熱交換器３３の右端向かって円弧状に延びている。その結果、仕切部材４３は送風機室４１から機械室４２に風が回り込まないように遮蔽する機能を有している。 The partition member 43 extends substantially in parallel with the right side plate 47 from the top plate 48 side toward the bottom plate 49 side. The partition member 43 extends in an arc shape from the inner surface side of the front plate 46 toward the right end of the outdoor heat exchanger 33. As a result, the partition member 43 has a function of shielding the wind from flowing from the blower chamber 41 to the machine chamber 42.
　また、図３に示すように、前板４６には、円形の吹出口４６ａが形成されている。吹出口４６ａには、その周縁に沿うようにリング状のベルマウス５２が取り付けられている。 Further, as shown in FIG. 3, the front plate 46 is formed with a circular outlet 46a. A ring-shaped bell mouth 52 is attached to the air outlet 46a along the peripheral edge thereof.
　（３－２－２）圧縮機３１
　図１に示すように、圧縮機３１は、機械室４２側に位置しており、底板４９に固定されている。運転時、圧縮機３１は高温になるので、機械室４２は送風機室４１に比較して温度が高くなっている。 (3-2-2) Compressor 31
As shown in FIG. 1, the compressor 31 is located on the machine room 42 side and is fixed to the bottom plate 49. During operation, the compressor 31 is at a high temperature, so that the temperature in the machine room 42 is higher than that in the blower room 41.
　（３－２－３）電装品ユニット５０
　図３に示すように、電装品ユニット５０は送風機室４１に位置しており、圧縮機３１および室外ファン３９などを駆動するための電子部品を集約した制御基板を搭載している。 (3-2-3) Electrical component unit 50
As shown in FIG. 3, the electrical component unit 50 is located in the blower chamber 41 and has a control board on which electronic components for driving the compressor 31, the outdoor fan 39, and the like are integrated.
　（３－２－４）室外熱交換器３３
　図２に示すように、室外熱交換器３３は、ケーシング４０の背面部４４と左側板４５とに対峙できるように、Ｌ字状に成形されている。また、室外熱交換器３３の高さは、天板４８と底板４９との距離にほぼ等しい寸法を有している。 (3-2-4) Outdoor heat exchanger 33
As shown in FIG. 2, the outdoor heat exchanger 33 is formed in an L shape so as to face the back surface portion 44 and the left side plate 45 of the casing 40. Further, the height of the outdoor heat exchanger 33 has a dimension substantially equal to the distance between the top plate 48 and the bottom plate 49.
　（３－２－５）室外ファン３９
　室外ファン３９は、ファンモータ３９ａによって駆動されるプロペラ３９ｂを有しており、室外熱交換器３３の下流側に設けられている。プロペラ３９ｂの一部は、このベルマウス５２で囲まれた空間内に入るように配置されている。 (3-2-5) Outdoor fan 39
The outdoor fan 39 has a propeller 39b driven by a fan motor 39a, and is provided on the downstream side of the outdoor heat exchanger 33. A part of the propeller 39b is arranged so as to enter a space surrounded by the bell mouth 52.
　（３－２－６）防護用グリル５６
　図２に示すように、防護用グリル５６は、ケーシング４０の前板４６に取り付けられ、吹出口４６ａを覆っている。防護用グリル５６には、外気を吹き出すため、複数の開口部が形成されている。 (3-2-6) Protective grill 56
As shown in FIG. 2, the protective grill 56 is attached to the front plate 46 of the casing 40 and covers the outlet 46a. The protective grill 56 is formed with a plurality of openings for blowing out the outside air.
　（３－２－７）仕切部材４３
　仕切部材４３は、ケーシング４０内を送風機室４１と機械室４２とを仕切る。本実施形態では、加湿ユニット６０が機械室４２の上部に配置されるので、加湿ユニット６０が仕切部材４３上部の一部分を兼ねている。 (3-2-7) Partition member 43
The partition member 43 partitions the blower chamber 41 and the machine chamber 42 inside the casing 40. In the present embodiment, since the humidification unit 60 is disposed at the upper part of the machine room 42, the humidification unit 60 also serves as a part of the upper part of the partition member 43.
　（３－２－８）加湿ユニット６０
　図２に示しように、加湿ユニット６０は、前板４６と背面部４４との間で、送風機室４１と機械室４２とに跨るように配置されている。加湿ユニット６０は、加湿ロータ６３、吸着用ダクト６８、ヒータ７１、加湿用ダクト７３、ファン７５（図１参照）、及び加湿用第２ダクト１８０を有している。 (3-2-8) Humidification unit 60
As shown in FIG. 2, the humidifying unit 60 is disposed between the front plate 46 and the back surface portion 44 so as to straddle the blower chamber 41 and the machine chamber 42. The humidification unit 60 includes a humidification rotor 63, an adsorption duct 68, a heater 71, a humidification duct 73, a fan 75 (see FIG. 1), and a humidification second duct 180.
　（４）加湿ユニット６０の詳細構成
　（４－１）加湿ロータ６３
　図３に示すように、加湿ロータ６３は、円板状で、前板４６の吸込開口４６ｂと対向するように配置されており、モータ駆動によって回転することができる。吸込開口４６ｂは中心角が約２４０°の扇形を成しており、扇の中心軸と加湿ロータ６３の回転中心軸は同軸上に位置している。加湿ロータ６３の全周囲は、壁によって包囲されている。 (4) Detailed configuration of humidification unit 60 (4-1) Humidification rotor 63
As shown in FIG. 3, the humidification rotor 63 has a disc shape and is disposed so as to face the suction opening 46 b of the front plate 46, and can be rotated by driving a motor. The suction opening 46b has a sector shape with a central angle of about 240 °, and the central axis of the fan and the rotation central axis of the humidification rotor 63 are located on the same axis. The entire circumference of the humidification rotor 63 is surrounded by a wall.
　加湿ロータ６３は吸込開口４６ｂと対向する中心角２４０°分の扇形領域で水分を吸着するので、この領域を水分吸着領域６３ａという。また、加湿ロータ６３は、水分吸着領域６３ａに隣接し吸込開口４６ｂと対向しない中心角１２０°分の扇形領域で水分を放出するので、この領域を水分放出領域６３ｂという。つまり、加湿ロータ６３は、回転角度によって水分吸着領域６３ａであった部分が水分放出領域６３ｂとなり、水分放出領域６３ｂであった部分が水分吸着領域６３ａとなる。 Since the humidification rotor 63 adsorbs moisture in a fan-shaped region having a central angle of 240 ° facing the suction opening 46b, this region is referred to as a moisture adsorption region 63a. Further, the humidifying rotor 63 discharges moisture in a fan-shaped region with a central angle of 120 ° that is adjacent to the moisture adsorption region 63a and does not face the suction opening 46b. Therefore, this region is referred to as a moisture release region 63b. That is, in the humidification rotor 63, the portion that was the moisture adsorption region 63a becomes the moisture release region 63b and the portion that was the moisture release region 63b becomes the moisture adsorption region 63a depending on the rotation angle.
　図４は、加湿ロータ及び加湿ロータを通過する空気の流れを示す斜視図である。図４において、加湿ロータ６３は、周囲にギア６３ｔが設けられている。また、図３に示すように、ギア６３ｔはピニオンギア６４ａと噛み合っており、ピニオンギア６４ａがロータ駆動用モータ６４の動力によって回転することによって、ギア６４ｔと共に加湿ロータ６３全体が回転する。 FIG. 4 is a perspective view showing a humidification rotor and a flow of air passing through the humidification rotor. In FIG. 4, the humidifying rotor 63 is provided with a gear 63 t around it. Further, as shown in FIG. 3, the gear 63t meshes with the pinion gear 64a, and when the pinion gear 64a is rotated by the power of the rotor driving motor 64, the entire humidification rotor 63 is rotated together with the gear 64t.
　また、水分吸着領域６３ａ及び水分放出領域６３ｂは、ゼオライト等の焼成によって形成されたハニカム構造である。ゼオライト等の吸着剤は、常温で空気から水分を吸着し、ヒータなどで加熱された空気に曝されて温度上昇したときに水分を放出する。 Further, the moisture adsorption region 63a and the moisture release region 63b have a honeycomb structure formed by firing of zeolite or the like. Adsorbents such as zeolite adsorb moisture from air at room temperature and release moisture when the temperature rises due to exposure to air heated by a heater or the like.
　したがって、加湿ユニット６０では、加湿ロータ６３の水分放出領域６３ｂと前板４６との間に、水分放出領域６３ｂと対向するようにヒータ７１が配置されている。 Therefore, in the humidification unit 60, the heater 71 is disposed between the moisture release region 63b of the humidification rotor 63 and the front plate 46 so as to face the moisture release region 63b.
　（４－２）吸着用ダクト６８
　図５は、ヒータ７１を取り外した状態の加湿ユニット６０の斜視図である。図５において、加湿ユニット６０は、水分吸着領域６３ａに外気を導くための吸着用ダクト６８が設けられている。吸着用ダクト６８は、前板４６の吸込開口６４ｂに向かって開口する空気流入口６８１を形成している。空気流入口６８１の形状は、吸込開口４６ｂと同じく中心角が約２４０°の扇形を成している。 (4-2) Adsorption duct 68
FIG. 5 is a perspective view of the humidifying unit 60 with the heater 71 removed. In FIG. 5, the humidifying unit 60 is provided with an adsorption duct 68 for guiding outside air to the moisture adsorption region 63a. The suction duct 68 forms an air inlet 681 that opens toward the suction opening 64 b of the front plate 46. The shape of the air inlet 681 has a sector shape with a central angle of about 240 °, like the suction opening 46b.
　水分を含む空気は、空気流入口６８１から吸い込まれた後、吸着用ダクト６８内を流れて加湿ロータ６３の水分吸着領域６３ａに到達し、そこを透過する際に水分が吸着され、空気流出口６８３（図３参照）から排出される。空気流出口６８３は、室外ファン３９が回転するときに負圧になる空間（つまり、ベルマウス５２の上流側端部）に隣接しており、空気流出口６８３側の気圧が空気流入口６８１側より低くなる作用によって、空気が空気流入口６８１から吸い込まれる。なお、水分吸着領域６３ａが水分放出領域６３ｂよりもベルマウス５２側に配置されている。 The air containing moisture is sucked from the air inlet 681 and then flows through the adsorption duct 68 to reach the moisture adsorption region 63a of the humidification rotor 63. When the air is permeated there, moisture is adsorbed, and the air outlet It is discharged from 683 (see FIG. 3). The air outlet 683 is adjacent to a space that becomes negative pressure when the outdoor fan 39 rotates (that is, the upstream end of the bell mouth 52), and the air pressure on the air outlet 683 side is the air inlet 681 side. Due to the lowering action, air is sucked in from the air inlet 681. Note that the moisture adsorption region 63a is disposed closer to the bell mouth 52 than the moisture release region 63b.
　図３に示すように、吸込開口４６ｂは、前板４６の吹出口４６ａの右斜め上側に設けられており、吹出口４６ａと同様に前板４６の前方に向かって開口している。室外ファン３９によって前方へ押し出された空気は、ベルマウス５２に沿って進み、吹出口４６ａから勢いよく吹き出されるので、吹出口４６ａから吹き出された空気が吸込開口４６ｂから吸い込まれることはない。 As shown in FIG. 3, the suction opening 46b is provided on the upper right side of the air outlet 46a of the front plate 46, and opens toward the front of the front plate 46 in the same manner as the air outlet 46a. The air pushed forward by the outdoor fan 39 travels along the bell mouth 52 and is blown out from the blowout port 46a, so that the air blown out from the blowout port 46a is not sucked from the suction opening 46b.
　上記のような構成を採る目的は、より水分を含んだ空気を取り込むためである。通常、加湿運転は、暖房運転時に行われるので、室外熱交換器３３を通過した空気は低温低湿になっている。このため、低温空気が吸い込まれた場合、加湿ロータ６３が吸着することができる水分量が低下する。しかしながら、吸込開口６４ｂ及び空気流入口６８１が室外熱交換器３３を通過した空気を吸い込まない構成にしておけば、より水分を含んだ外気を取り込むことができるので、加湿ロータ６３が吸着する水分量が低下することを防止することができる。 The purpose of adopting the above configuration is to take in more air containing moisture. Usually, since the humidification operation is performed during the heating operation, the air that has passed through the outdoor heat exchanger 33 has low temperature and low humidity. For this reason, when low-temperature air is inhaled, the amount of moisture that can be adsorbed by the humidifying rotor 63 decreases. However, if the suction opening 64b and the air inlet 681 are configured not to suck the air that has passed through the outdoor heat exchanger 33, it is possible to take in outside air containing more moisture, so that the moisture amount adsorbed by the humidifying rotor 63 is increased. Can be prevented from decreasing.
　（４－３）ヒータ７１
　ヒータ７１は、加湿ロータ６３の水分放出領域６３ｂから水分を放出させるために、水分放出領域６３ｂに送られる空気を加熱する。加熱された空気は、水分放出領域６３ｂを透過するときに加湿ロータ６３から水分を放出させて、高湿の空気となって加湿用ダクト７３に入る。 (4-3) Heater 71
The heater 71 heats the air sent to the moisture release region 63b in order to release moisture from the moisture release region 63b of the humidification rotor 63. The heated air releases moisture from the humidification rotor 63 when passing through the moisture release region 63b, and enters the humidification duct 73 as humid air.
　（４－４）加湿用ダクト７３
　図１及び図５に示すように、加湿用ダクト７３は、空気をヒータ７１経由で水分放出領域６３ｂまで導き、さらに加湿ロータ６３を透過した空気をファン７５まで導く。加湿用ダクト７３に導かれる空気の流れは、ファン７５によって発生する。 (4-4) Humidification duct 73
As shown in FIGS. 1 and 5, the humidification duct 73 guides air to the moisture release region 63 b via the heater 71, and further guides the air that has passed through the humidification rotor 63 to the fan 75. The air flow guided to the humidifying duct 73 is generated by the fan 75.
　加湿用ダクト７３に導かれる空気は、ヒータ７１に加熱されて高温空気になり、さらに、加湿ロータ６３を透過する際に水分放出領域６３ｂから水分を放出させ高温高湿空気となってファン７５に向う。 The air guided to the humidification duct 73 is heated by the heater 71 to become high-temperature air, and further, when passing through the humidification rotor 63, moisture is released from the moisture release region 63b to become high-temperature and high-humidity air to the fan 75. Head over.
　（４－５）ファン７５
　ファン７５は、図１に示すように、加湿空気を所定の方向へ送り出す羽根車７５ａと、その羽根車７５ａを駆動するファンモータ７５ｂとを有している。ファン７５は、羽根車７５ａの回転軸が水平方向となる姿勢で配置され、羽根車７５ａの回転軸にファンモータ７５ｂの回転軸が直結されている。また、ファン７５は機械室４２に配置されている。 (4-5) Fan 75
As shown in FIG. 1, the fan 75 includes an impeller 75a that sends out humidified air in a predetermined direction, and a fan motor 75b that drives the impeller 75a. The fan 75 is arranged in such a posture that the rotation shaft of the impeller 75a is in the horizontal direction, and the rotation shaft of the fan motor 75b is directly connected to the rotation shaft of the impeller 75a. The fan 75 is disposed in the machine room 42.
　また、羽根車７５ａはファンケーシング８１に囲まれており、このファンケーシング８１と加湿用第２ダクト１８０の入口とが繋がっている。ファンモータ７５ｂは、外側をモータカバー８２で覆われている。 The impeller 75a is surrounded by a fan casing 81, and the fan casing 81 and the inlet of the humidifying second duct 180 are connected. The fan motor 75b is covered with a motor cover 82 on the outside.
　（４－６）加湿用第２ダクト１８０
　加湿用第２ダクト１８０は、ファン７５から押し出される高温高湿空気を給気ホース１８（図１参照）の接続口まで導くダクトである。加湿用第２ダクト１８０のほぼ全体が機械室４２に位置しているが、給気ホース１８との接続口を含む所定部分だけは、右側板４７を挟んで機械室４２の反対側に位置する（図２参照）。 (4-6) Humidification second duct 180
The humidifying second duct 180 is a duct that guides high-temperature and high-humidity air pushed out from the fan 75 to the connection port of the air supply hose 18 (see FIG. 1). Almost all of the humidifying second duct 180 is located in the machine room 42, but only a predetermined portion including the connection port with the air supply hose 18 is located on the opposite side of the machine room 42 with the right side plate 47 interposed therebetween. (See FIG. 2).
　図５に示すように、加湿用第２ダクト１８０は、水平ダクト部１８１と鉛直ダクト部１８２とを有している。水平ダクト部１８１は高温高湿空気を水平に導くダクトであり、鉛直ダクト部１８２は水平ダクト部１８１に流入した高温高湿空気を下方に導くダクトである。水平ダクト部１８１は、機械室４２から右側板４７の後方端に向って延びている。 As shown in FIG. 5, the humidifying second duct 180 has a horizontal duct portion 181 and a vertical duct portion 182. The horizontal duct portion 181 is a duct that guides the high-temperature high-humidity air horizontally, and the vertical duct portion 182 is a duct that guides the high-temperature high-humidity air flowing into the horizontal duct portion 181 downward. The horizontal duct portion 181 extends from the machine room 42 toward the rear end of the right side plate 47.
　なお、鉛直ダクト部１８２は、水平ダクト部１８１との接続口から鉛直下方に延び、終端が、給気ホース１８と接続される。 The vertical duct portion 182 extends vertically downward from the connection port with the horizontal duct portion 181, and the end is connected to the air supply hose 18.
　（５）空調機１０の動作
　（５－１）冷房運転
　冷房運転時、四路切換弁３２は、圧縮機３１の吐出側と室外熱交換器３３のガス側とを接続し、且つ圧縮機３１の吸入側と室内熱交換器２１のガス側とを接続する（図１の実線で示される状態）。 (5) Operation of the air conditioner 10 (5-1) Cooling operation During the cooling operation, the four-way switching valve 32 connects the discharge side of the compressor 31 to the gas side of the outdoor heat exchanger 33, and the compressor 31. Are connected to the gas side of the indoor heat exchanger 21 (state shown by the solid line in FIG. 1).
　また、液側閉鎖弁３７及びガス側閉鎖弁３８は開状態である。電動膨張弁３４の開度は、室内熱交換器２１の冷媒出口における冷媒の過熱度ＳＨが過熱度目標値で一定になるように調節される。 Further, the liquid side closing valve 37 and the gas side closing valve 38 are in an open state. The opening degree of the electric expansion valve 34 is adjusted so that the superheat degree SH of the refrigerant at the refrigerant outlet of the indoor heat exchanger 21 is constant at the superheat degree target value.
　この冷媒回路の状態で、圧縮機３１、室外ファン３９および室内ファン２２を運転すると、低圧のガス冷媒は、圧縮機３１に吸入されて圧縮されて高圧のガス冷媒となる。その後、高圧のガス冷媒は、四路切換弁３２を経由して室外熱交換器３３に送られて、室外ファン３９によって供給される室外空気と熱交換を行って凝縮して高圧の液冷媒となる。そして、この高圧の液冷媒は、電動膨張弁３４で減圧された後、液側閉鎖弁３７および液冷媒連絡配管１４を経由して、室内ユニット２０に送られる。 When the compressor 31, the outdoor fan 39, and the indoor fan 22 are operated in the state of this refrigerant circuit, the low-pressure gas refrigerant is sucked into the compressor 31 and compressed to become a high-pressure gas refrigerant. After that, the high-pressure gas refrigerant is sent to the outdoor heat exchanger 33 via the four-way switching valve 32, exchanges heat with the outdoor air supplied by the outdoor fan 39, and condenses to form a high-pressure liquid refrigerant. Become. The high-pressure liquid refrigerant is decompressed by the electric expansion valve 34 and then sent to the indoor unit 20 via the liquid-side closing valve 37 and the liquid refrigerant communication pipe 14.
　この室内ユニット２０に送られた低圧の冷媒は、気液二相状態の冷媒となって室内熱交換器１５に入り、室内熱交換器１５において室内空気と熱交換を行って蒸発して低圧のガス冷媒となる。 The low-pressure refrigerant sent to the indoor unit 20 becomes a gas-liquid two-phase refrigerant, enters the indoor heat exchanger 15, performs heat exchange with the indoor air in the indoor heat exchanger 15, evaporates, and is low-pressure. It becomes a gas refrigerant.
　この低圧のガス冷媒は、ガス冷媒連絡配管１６を経由して室外ユニット３０に送られ、ガス側閉鎖弁３８及び四路切換弁３２を経由して、アキュムレータ３６に流入する。そして、アキュムレータ３６に流入した低圧のガス冷媒は、再び、圧縮機３１に吸入される。 The low-pressure gas refrigerant is sent to the outdoor unit 30 via the gas refrigerant communication pipe 16 and flows into the accumulator 36 via the gas-side closing valve 38 and the four-way switching valve 32. Then, the low-pressure gas refrigerant that has flowed into the accumulator 36 is again sucked into the compressor 31.
　このように、空調機１０では、室外熱交換器３３を冷媒の凝縮器として、かつ、室内熱交換器２１を冷媒の蒸発器として機能させる冷房運転を行うことができる。 Thus, the air conditioner 10 can perform a cooling operation in which the outdoor heat exchanger 33 functions as a refrigerant condenser and the indoor heat exchanger 21 functions as a refrigerant evaporator.
　（５－２）暖房運転
　暖房運転時、四路切換弁３２は、圧縮機３１の吐出側と室内熱交換器２１のガス側とを接続し、且つ圧縮機３１の吸入側と室外熱交換器３３のガス側とを接続する（図１の破線で示される状態）。 (5-2) Heating Operation During the heating operation, the four-way switching valve 32 connects the discharge side of the compressor 31 and the gas side of the indoor heat exchanger 21, and the suction side of the compressor 31 and the outdoor heat exchanger. 33 is connected to the gas side (indicated by a broken line in FIG. 1).
　また、電動膨張弁３４の開度は、室外熱交換器３３に流入する冷媒を室外熱交換器３３において蒸発させることが可能な圧力まで減圧するように調節される。液側閉鎖弁３７及びガス側閉鎖弁３８は開状態である。 The opening degree of the electric expansion valve 34 is adjusted so that the refrigerant flowing into the outdoor heat exchanger 33 is reduced to a pressure at which the outdoor heat exchanger 33 can evaporate. The liquid side closing valve 37 and the gas side closing valve 38 are open.
　この冷媒回路の状態で、圧縮機３１、室外ファン３９および室内ファン２２を運転すると、低圧のガス冷媒は、圧縮機３１に吸入されて圧縮されて高圧のガス冷媒となり、四路切換弁３２、ガス側閉鎖弁３８およびガス冷媒連絡配管１６を経由して、室内ユニット２０に送られる。 When the compressor 31, the outdoor fan 39, and the indoor fan 22 are operated in the state of this refrigerant circuit, the low-pressure gas refrigerant is sucked into the compressor 31 and compressed to become a high-pressure gas refrigerant, and the four-way switching valve 32, The gas is sent to the indoor unit 20 via the gas-side closing valve 38 and the gas refrigerant communication pipe 16.
　室内ユニット２０に送られた高圧のガス冷媒は、室内熱交換器２１において、室内空気と熱交換を行って凝縮して高圧の液冷媒となり、液冷媒連絡配管１４を経由して室外ユニット３０に送られる。 The high-pressure gas refrigerant sent to the indoor unit 20 is condensed by exchanging heat with indoor air in the indoor heat exchanger 21, and becomes a high-pressure liquid refrigerant. Sent.
　液冷媒は、液側閉鎖弁３７を通過して、電動膨張弁３４に入る。液冷媒は、電動膨張弁３４で減圧された後に、室外熱交換器３３に流入する。室外熱交換器３３に流入した低圧の気液二相状態の冷媒は、室外ファン３９によって供給される室外空気と熱交換を行って蒸発して低圧のガス冷媒となり、四路切換弁３２を経由してアキュムレータ３６に流入する。アキュムレータ３６に流入した低圧のガス冷媒は、再び、圧縮機３１に吸入される。 The liquid refrigerant passes through the liquid side closing valve 37 and enters the electric expansion valve 34. The liquid refrigerant is decompressed by the electric expansion valve 34 and then flows into the outdoor heat exchanger 33. The low-pressure gas-liquid two-phase refrigerant flowing into the outdoor heat exchanger 33 exchanges heat with the outdoor air supplied by the outdoor fan 39 to evaporate into a low-pressure gas refrigerant, and passes through the four-way switching valve 32. And flows into the accumulator 36. The low-pressure gas refrigerant that has flowed into the accumulator 36 is again sucked into the compressor 31.
　（５－３）加湿運転
　空調機１０では、加湿運転は暖房運転と組み合わせて行われる。図２、図３及び図５に示すように、吸着用ダクト６８の空気流入口６８１（図５参照）は前板４６の吸込開口６４ｂ（図３参照）に向かって開口し、空気流出口６８３（図２参照）は室外ファン３９が回転するときに負圧となるベルマウス５２の上流側端部に隣接している。室外ファン３９が稼動すると、空気流出口６８３側の気圧が空気流入口６８１側より低くなり、その作用によって「室外熱交換器３３を通っていない、水分を含んだ外気」が空気流入口６８１から吸い込まれる。 (5-3) Humidification Operation In the air conditioner 10, the humidification operation is performed in combination with the heating operation. As shown in FIGS. 2, 3 and 5, the air inlet 681 (see FIG. 5) of the adsorption duct 68 opens toward the suction opening 64 b (see FIG. 3) of the front plate 46, and the air outlet 683. (See FIG. 2) is adjacent to the upstream end of the bell mouth 52, which becomes negative pressure when the outdoor fan 39 rotates. When the outdoor fan 39 is operated, the air pressure on the air outlet 683 side becomes lower than that on the air inlet 681 side. As a result, the “outside air containing moisture that has not passed through the outdoor heat exchanger 33” is Inhaled.
　加湿ロータ６３は、空気流入口６８１と空気流出口６８３との間で且つ空気流出口６８３近傍に位置し、加湿運転時にはロータ駆動用モータ６４の動力によって所定の回転速度で回転している。加湿ロータ６３の回転によって、水分吸着領域６３ａで加湿ロータ６３に吸着された水分は加湿ロータ６３の回転に伴って水分放出領域６３ｂに運ばれ、ヒータ７１に対向する位置に来る。 The humidification rotor 63 is located between the air inlet 681 and the air outlet 683 and in the vicinity of the air outlet 683, and is rotated at a predetermined rotational speed by the power of the rotor driving motor 64 during the humidifying operation. Due to the rotation of the humidification rotor 63, the moisture adsorbed to the humidification rotor 63 in the moisture adsorption region 63a is carried to the moisture release region 63b along with the rotation of the humidification rotor 63, and comes to a position facing the heater 71.
　また、ファン７５も駆動しているので、外気がヒータ７１周囲に回り込み、加熱される。加熱された空気は、加湿ロータ６３の水分放出領域６３ｂを通るので、その加熱された空気に曝された部分から水分が放出される。そして、水分を含んだ空気（以下、加湿空気という。）はファン７５に吸い込まれ、加湿用第２ダクト１８０を介して給気ホース１８へと吹き出される。加湿された空気は、給気ホース１８を経て室内ユニット２０へと導かれる。 Further, since the fan 75 is also driven, the outside air flows around the heater 71 and is heated. Since the heated air passes through the moisture release region 63b of the humidification rotor 63, moisture is released from the portion exposed to the heated air. Air containing moisture (hereinafter referred to as humidified air) is sucked into the fan 75 and blown out to the air supply hose 18 through the humidifying second duct 180. The humidified air is guided to the indoor unit 20 through the air supply hose 18.
　（６）特徴
　（６－１）
　室外ユニット３０では、室外熱交換器３３を通過しない空気が吸込開口４６ｂから流入する。その結果、室外熱交換器３３への着霜が発生した際には室外熱交換器３３の通風抵抗増加で減少した風量に相当する量の空気が吸込開口４６ｂから導入されることになり、［着霜時に吸着風量が低下していた従来］とは逆に吸着風量が増加する。 (6) Features (6-1)
In the outdoor unit 30, air that does not pass through the outdoor heat exchanger 33 flows from the suction opening 46b. As a result, when frost formation on the outdoor heat exchanger 33 occurs, an amount of air corresponding to the amount of air reduced due to the increase in ventilation resistance of the outdoor heat exchanger 33 is introduced from the suction opening 46b. Contrary to the conventional case where the adsorbed air volume has decreased during frost formation, the adsorbed air volume increases.
　（６－２）
　室外ユニット３０では、室外ファン３９の稼動により室外ファン３９の吸込側、つまりベルマウス５２の上流側端部が負圧になり、その作用によって吸込開口４６ｂから外気が導入される。特に、ベルマウス５２の上流側端部と、空気流路ＡＦ２の下流側端部である吸着用ダクト６８の空気流出口６８３とが隣接するので、ベルマウス５２の上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口４６ｂからより多くの外気を流入させることができる。 (6-2)
In the outdoor unit 30, the outdoor fan 39 is operated, the suction side of the outdoor fan 39, that is, the upstream end of the bell mouth 52 becomes negative pressure, and external air is introduced from the suction opening 46b by the action. In particular, since the upstream end of the bell mouth 52 and the air outlet 683 of the suction duct 68 that is the downstream end of the air flow path AF2 are adjacent to each other, the negative pressure at the upstream end of the bell mouth 52 is reduced. You can receive more effects. As a result, more outside air can be introduced from the suction opening 46b.
　（６－３）
　吸込開口４６ｂから導入された空気は加湿ロータ６３の水分吸着領域６３ａに導かれるのが合理的であるから、水分吸着領域６３ａ側がベルマウス５２寄りに配置されることによってベルマウス５２の上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口４６ｂからより多くの外気を流入させることができる。 (6-3)
Since it is reasonable that the air introduced from the suction opening 46 b is guided to the moisture adsorption region 63 a of the humidifying rotor 63, the upstream end of the bell mouth 52 is arranged by arranging the moisture adsorption region 63 a side closer to the bell mouth 52. The effect of the negative pressure of the part can be received more. As a result, more outside air can be introduced from the suction opening 46b.
　（７）変形例
　図６は、前板が取り外された状態の変形例に係る室外ユニット３０の正面図である。また図７は、図６におけるベルマウス５２と加湿ユニット６０との位置関係を示す斜視図である。 (7) Modification FIG. 6 is a front view of an outdoor unit 30 according to a modification in a state in which the front plate is removed. FIG. 7 is a perspective view showing the positional relationship between the bell mouth 52 and the humidifying unit 60 in FIG.
　図６及び図７において、室外ユニット３０では、デッドスペースの最小化を考慮すると前板４６における吹出口４６ａ及び吸込開口４６ｂが吹出口４６ａの縦軸上又は横軸上に並べて配置されること不合理であり、吸込開口４６ｂは吹出口４６ａと前板４６の右上コーナーとの間に配置される。 6 and 7, in the outdoor unit 30, in consideration of minimization of dead space, the outlet 46a and the suction opening 46b in the front plate 46 are not arranged side by side on the vertical axis or the horizontal axis of the outlet 46a. It is reasonable, and the suction opening 46b is disposed between the outlet 46a and the upper right corner of the front plate 46.
　吹出口４６ａと吸込開口４６ｂとの中心間距離は、ベルマウス５２と吸着用ダクト６８との中心間距離であり、上記実施形態では両者の外周同士が干渉しない最短距離に設定されている。 The center-to-center distance between the air outlet 46a and the suction opening 46b is the center-to-center distance between the bell mouth 52 and the suction duct 68, and is set to the shortest distance in which the outer peripheries of the both do not interfere with each other.
　負圧を利用して吸込開口４６ｂから外気を取り込むため、空気流出口６８３に負圧が作用するように、ベルマウス５２の上流側端部の周縁と吸着用ダクト６８の空気流出口６８３の周縁を近接させている。なお、ここまでの記載事項については、上記実施形態にも適用されている。 Since the outside air is taken in from the suction opening 46b using the negative pressure, the peripheral edge of the upstream end of the bell mouth 52 and the peripheral edge of the air outlet 683 of the suction duct 68 so that the negative pressure acts on the air outlet 683. Are in close proximity. The items described so far are also applied to the above embodiment.
　ここで、ベルマウス５２の上流側端部の負圧が空気流出口６８３に効果的に作用する理想的な構成は、ベルマウス５２の中心軸と吸着用ダクト６８の中心軸とが一点で交差することである。 Here, the ideal configuration in which the negative pressure at the upstream end of the bell mouth 52 effectively acts on the air outlet 683 is that the central axis of the bell mouth 52 and the central axis of the suction duct 68 intersect at one point. It is to be.
　しかし、加湿ロータ６３の水分吸着領域６３ａを除く加湿ユニット６０を機械室４２に収納させるという構造的制約上、ベルマウス５２の中心軸と吸着用ダクト６８の中心軸とが一点で交差する構成は採用できない。 However, because of the structural restriction that the humidification unit 60 except the moisture adsorption region 63a of the humidification rotor 63 is housed in the machine room 42, the central axis of the bell mouth 52 and the central axis of the adsorption duct 68 intersect at one point. Cannot be adopted.
　そこで、本変形例では、ベルマウス５２の上流側端部の負圧が吸着用ダクト６８の空気流出口６８３に効果的に作用するように、加湿ロータ６３を傾斜させている。図７に示すように、加湿ロータ６３の板面が、ベルマウス５２の開口面に対して所定角度θだけ傾斜しており、その所定角度θは５°～４５°の範囲内であり、推奨値は３０°である。 Therefore, in this modification, the humidification rotor 63 is inclined so that the negative pressure at the upstream end of the bell mouth 52 effectively acts on the air outlet 683 of the adsorption duct 68. As shown in FIG. 7, the plate surface of the humidifying rotor 63 is inclined by a predetermined angle θ with respect to the opening surface of the bell mouth 52, and the predetermined angle θ is within a range of 5 ° to 45 °, which is recommended. The value is 30 °.
　加湿ロータ６３の板面がベルマウス５２の開口面に対して所定角度θだけ傾斜することによって、ベルマウス５２の上流側端部と、空気流出口６８３がより接近するので、空気流出口６８３はベルマウス５２の上流側端部の負圧の効果をより多く受けることができる。その結果、吸込開口４６ｂからより多くの外気を流入させることができる。 Since the plate surface of the humidifying rotor 63 is inclined by a predetermined angle θ with respect to the opening surface of the bell mouth 52, the upstream end of the bell mouth 52 and the air outlet 683 are closer to each other. The effect of the negative pressure at the upstream end of the bell mouth 52 can be received more. As a result, more outside air can be introduced from the suction opening 46b.
　以上のように、本願発明によれば、加湿ユニットを備えた空調機の室外ユニットに限らず、仕切部材によって空間を２分割されたケーシング内にそれら２つの空間を跨ぐように他のユニットが配置される機器にも有用である。 As described above, according to the present invention, not only an outdoor unit of an air conditioner provided with a humidifying unit, but other units are arranged so as to straddle the two spaces in a casing divided into two spaces by a partition member. It is also useful for equipment to be used.
１０　　　空調機
３０　　　室外ユニット
３３　　　室外熱交換器
３９　　　室外ファン
４０　　　本体ケーシング
４６ａ　　吹出口
４６ｂ　　吸込開口
５２　　　ベルマウス
６３　　　加湿ロータ（吸着部材） DESCRIPTION OF SYMBOLS 10 Air conditioner 30 Outdoor unit 33 Outdoor heat exchanger 39 Outdoor fan 40 Main body casing 46a Air outlet 46b Suction opening 52 Bell mouth 63 Humidification rotor (adsorption member)
特開２００８－１９０８２８号公報JP 2008-190828 A

Claims (6)

  1. 　空気中の水分を吸着した後に加熱されることによって前記水分を放出する板状の吸着部材（６３）をその表面が鉛直面に沿うように配置した、空調機の室外ユニットであって、
    　外郭を形成する本体ケーシング（４０）と、
    　前記本体ケーシング（４０）に収納される室外熱交換器（３３）と、
    　前記本体ケーシング（４０）に収納され、前記室外熱交換器（３３）を通過する空気流を生成する室外ファン（３９）と、
    を備え、
    　前記本体ケーシング（４０）は、
    　前記室外ファン（３９）からの空気が吹き出される吹出口（４６ａ）と、
    　前記吹出口（４６ａ）とは異なる位置に設けられ、前記室外熱交換器（３３）を通過しない空気を導入する吸込開口（４６ｂ）と、
    を有し、
    　前記本体ケーシング（４０）内には、前記室外ファン（３９）が前記空気流を生成する際に生じる負圧によって、前記吸込開口（４６ｂ）から導入された空気を前記吸着部材（６３）へ流して前記吸着部材（６３）内を通過させる空気流路が形成されている、
    空調機の室外ユニット。     An outdoor unit of an air conditioner in which a plate-like adsorbing member (63) that releases the moisture by being heated after adsorbing moisture in the air is disposed so that the surface thereof is along a vertical plane,
    A body casing (40) forming an outer shell;
    An outdoor heat exchanger (33) housed in the main body casing (40);
    An outdoor fan (39) housed in the main casing (40) and generating an air flow passing through the outdoor heat exchanger (33);
    With
    The body casing (40)
    An outlet (46a) through which air from the outdoor fan (39) is blown;
    A suction opening (46b) that is provided at a position different from the outlet (46a) and introduces air that does not pass through the outdoor heat exchanger (33);
    Have
    In the main casing (40), the air introduced from the suction opening (46b) flows to the adsorption member (63) by the negative pressure generated when the outdoor fan (39) generates the air flow. An air flow path is formed through the suction member (63).
    Air conditioner outdoor unit.
  2. 　前記室外ファン（３９）からの空気を前記吹出口（４６ａ）へ案内するベルマウス（５２）をさらに備え、
    　前記ベルマウス（５２）における空気流れ方向の上流側端部と、前記空気流路における空気流れ方向の下流側端部とが隣接している、
    請求項１に記載の空調機の室外ユニット。     A bell mouth (52) for guiding air from the outdoor fan (39) to the air outlet (46a);
    An upstream end in the air flow direction in the bell mouth (52) and a downstream end in the air flow direction in the air flow path are adjacent to each other.
    The outdoor unit of the air conditioner according to claim 1.
  3. 　前記吸着部材（６３）では、前記空気流路を流れる空気中の水分を吸着する吸着側と、吸着した前記水分を放出する放出側とが並存し、前記吸着側が前記ベルマウス（５２）寄りに配置されている、
    請求項２に記載の空調機の室外ユニット。     In the adsorption member (63), an adsorption side for adsorbing moisture in the air flowing through the air flow path and a discharge side for releasing the adsorbed moisture coexist, and the adsorption side is closer to the bell mouth (52). Arranged,
    The outdoor unit of the air conditioner according to claim 2.
  4. 　前記吸着部材（６３）は、前記本体ケーシング（４０）の前面部と平行に配置されている、
    請求項１から請求項３のいずれか１項に記載の空調機の室外ユニット。     The adsorbing member (63) is disposed in parallel with the front surface portion of the main casing (40).
    The outdoor unit of an air conditioner according to any one of claims 1 to 3.
  5. 　前記吸込開口（４６ｂ）及び前記ベルマウス（５２）の開口が、前記本体ケーシング（４０）の前面部に設けられている、
    請求項２から請求項４のいずれか１項に記載の空調機の室外ユニット。     The suction opening (46b) and the opening of the bell mouth (52) are provided on the front surface of the main casing (40).
    The outdoor unit of an air conditioner according to any one of claims 2 to 4.
  6. 　前記吸着部材（６３）は、前記吸込開口（４６ｂ）と対向するように配置されている、
    請求項５に記載の空調機の室外ユニット。     The suction member (63) is disposed so as to face the suction opening (46b).
    The outdoor unit of an air conditioner according to claim 5.
PCT/JP2015/084928 2014-12-18 2015-12-14 Outdoor unit for air conditioner WO2016098727A1 (en)

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CN107110528A (en) 2017-08-29
JP6119823B2 (en) 2017-04-26

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