WO2020203416A1 - Air-conditioning unit - Google Patents

Air-conditioning unit Download PDF

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Publication number
WO2020203416A1
WO2020203416A1 PCT/JP2020/012741 JP2020012741W WO2020203416A1 WO 2020203416 A1 WO2020203416 A1 WO 2020203416A1 JP 2020012741 W JP2020012741 W JP 2020012741W WO 2020203416 A1 WO2020203416 A1 WO 2020203416A1
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WO
WIPO (PCT)
Prior art keywords
air
filter
view
flat panel
central portion
Prior art date
Application number
PCT/JP2020/012741
Other languages
French (fr)
Japanese (ja)
Inventor
脩一 田中
義照 野内
Original Assignee
ダイキン工業株式会社
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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
Publication of WO2020203416A1 publication Critical patent/WO2020203416A1/en

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Classifications

    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers

Definitions

  • the air conditioning unit especially the air conditioning unit in which the air suction port is formed on the lower surface.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2001-274278 discloses an invention in which an air-conditioning duct is extended from an air-conditioning unit installed behind the ceiling of a room to separate the air-conditioning air from the main body of the air-conditioning unit.
  • the outlet duct extends from the side surface of the main body of the air conditioning unit.
  • the suction port is formed on the lower surface of the main body of the air conditioning unit.
  • a suction port panel is often provided under the main body.
  • the suction panel hides at least a part of the main body of the air conditioning unit to improve the appearance.
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2001-27428
  • a suction port panel in which a large number of openings such as slits are formed is provided, and the air in the room is sucked into the main body of the air conditioning unit while improving the appearance. Lead to. Then, when inspecting and maintaining the air conditioning unit, the suction port panel is removed.
  • dust dust or dust (hereinafter referred to as dust) may fall from the opening into the room when the operation is stopped.
  • the air conditioning unit of the first aspect includes a main body casing, a filter, and a plate-shaped member.
  • the main body casing is installed above or above the air-conditioned space.
  • the main body casing houses the fan and heat exchanger.
  • An air suction port is formed on the lower surface of the main body casing.
  • the filter collects dust contained in the air passing through the suction port.
  • the plate-like member is located below the filter. In plan view, the plate-like member is larger than the filter.
  • the plate-shaped member and the filter are arranged so that the outer edge of the filter is located inside the outer edge of the plate-shaped member in a plan view.
  • the outer edge of the filter is located inside the outer edge of the plate-shaped member in a plan view, even when the dust collected by the filter falls, the falling dust can be received by the plate-shaped member.
  • the air conditioning unit of the second viewpoint is the air conditioning unit of the first viewpoint
  • the plate-shaped member has a central portion and a non-central portion.
  • the central portion is a portion that overlaps the filter in a plan view.
  • the non-central part is a part that does not overlap with the filter in a plan view.
  • An opening that penetrates vertically is not formed in the central portion of the plate-shaped member. When dust falls from the filter, the central portion of the plate-shaped member receives the dust.
  • the air conditioning unit is configured so that most of the dust can be received by the plate-shaped member even when dust falls from the filter. As a result, the dust collected by the filter is suppressed from falling into the air-conditioned space.
  • the air conditioning unit of the third viewpoint is the air conditioning unit of the second viewpoint, and the plate-shaped member further has a wall portion.
  • the wall portion of the plate-shaped member extends upward from the outer edge of the central portion of the plate-shaped member, or extends upward from the non-central portion of the plate-shaped member.
  • the wall portion is provided here, it is possible to prevent the dust that falls from the filter and is received by the central portion of the plate-shaped member from moving sideways and falling into the air-conditioned space.
  • the air-conditioning unit of the fourth viewpoint is any of the air-conditioning units of the first to third viewpoints, and the first angle is 5 ° to 60 °.
  • the first angle is an angle formed by a virtual straight line in the vertical cross-sectional view and a vertical straight line passing through one end of the filter in the vertical cross-sectional view.
  • the cut surface of the vertical section is any vertical plane, including the centroid of the filter in plan view.
  • the virtual straight line in the vertical cross-sectional view is a straight line connecting one end of the filter in the vertical cross-sectional view and one end of the plate-shaped member in the vertical cross-sectional view close to one end of the filter.
  • the first angle is not less than 5 ° but has a certain size, even if the dust that has fallen from the filter falls slightly diagonally downward instead of directly below, the dust is generally removed by the plate-shaped member. Can receive.
  • the air-conditioning unit of the fifth viewpoint is any of the air-conditioning units of the first to fourth viewpoints, and an air outlet is formed on the side surface of the main body casing.
  • FIG. 5 is a vertical cross-sectional view showing the arrangement of the flat panel and the air filter viewed from the arrow VI of FIG.
  • the vertical cross-sectional view which shows the arrangement of the panel with a side wall of the indoor unit which concerns on modification 1 and a filter.
  • FIG. 1 is a diagram showing a refrigerant piping system of an air conditioner 10 having a plurality of indoor units and outdoor units.
  • the air conditioner 10 is a device that heats and cools a room in a building by performing a vapor compression refrigeration cycle operation.
  • the air conditioner 10 includes an outdoor unit 20 as a heat source unit, an indoor unit 30 as a large number of utilization units, and a first refrigerant connecting pipe 6 and a second refrigerant connecting pipe 7 connecting the outdoor unit 20 and the indoor unit 30. And have.
  • the refrigerant circuit of the air conditioner 10 is configured by connecting the outdoor unit 20, the indoor unit 30, and the refrigerant connecting pipes 6 and 7.
  • the refrigerant is sealed in the refrigerant circuit, and the refrigerating cycle operation is performed in which the refrigerant is compressed, cooled, depressurized, heated and evaporated, and then compressed again.
  • the refrigerant for example, one selected from R410A, R407C, R32, R134a, carbon dioxide, and the like is used.
  • the air-conditioned air (cold air or hot air) blown out from the indoor unit 30 is supplied from the blowout unit 55 to the air-conditioned space SP1 of the room via the duct 53.
  • the outdoor unit 20 is installed outside the building or in the basement of the building.
  • the outdoor unit 20 mainly includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 26, and an accumulator 29. By switching the four-way switching valve 22, the cooling operation and the heating operation are switched.
  • the outdoor heat exchanger 23 is a heat exchanger that functions as a radiator or evaporator for the refrigerant.
  • the outdoor unit 20 has an outdoor fan 27 for sucking outdoor air into the unit and discharging it to the outside again.
  • the outdoor fan 27 causes heat exchange between the outdoor air and the refrigerant flowing through the outdoor heat exchanger 23.
  • the indoor unit 30 is installed on the ceiling (including the space behind the ceiling) of each floor in the building.
  • Each indoor unit 30 mainly has an indoor expansion valve 41 which is a decompressor and an indoor heat exchanger 42 as a user-side heat exchanger.
  • the indoor expansion valve 41 is a mechanism for reducing the pressure of the refrigerant, and is an electric valve whose opening degree can be adjusted.
  • One end of the indoor expansion valve 41 is connected to the first refrigerant connecting pipe 6, and the other end is connected to the indoor heat exchanger 42.
  • the indoor heat exchanger 42 is a heat exchanger that functions as a refrigerant evaporator or radiator. One end of the indoor heat exchanger 42 is connected to the indoor expansion valve 41, and the other end is connected to the second refrigerant connecting pipe 7.
  • the indoor unit 30 includes an indoor fan 43 for sucking indoor air into the unit and supplying it to the room again, and exchanges heat between the indoor air and the refrigerant flowing through the indoor heat exchanger 42. Let me.
  • the blow-out unit 55 is installed at a place away from the indoor unit 30, and air-conditioned air sent from the indoor unit 30 through the duct 53 is taken into the room. It is a unit that blows out to the air-conditioned space SP1.
  • the outlet unit 55 is formed with one or a plurality of connection ports for connecting the duct 53 and an outlet 55a exposed to the air-conditioned space SP1.
  • both the indoor unit 30 and the blowout unit 55 are arranged in the installation space SP2 located above the air-conditioned space SP1 in the room.
  • This installation space SP2 is a space behind (above) the ceiling 90 of the room described later.
  • the indoor unit 30 is arranged above the ceiling 90 (space SP2) of the room including the air-conditioned space SP1.
  • the indoor unit 30 has a metal box member 31 and a bottom plate member 32.
  • the box member 31 and the bottom plate member 32 function as a main body casing.
  • the above-mentioned indoor expansion valve 41, indoor heat exchanger 42, and indoor fan 43 are also housed in the box member 31.
  • the indoor unit 30 includes a drain pan 46 for receiving condensed water in the indoor heat exchanger 42, a bell mouth 44 provided corresponding to the indoor fan 43, a connecting member 33 used for connecting to the duct 53, and the like. are doing.
  • the drain pan 46 and the bell mouth 44 are housed in the box member 31.
  • the connecting member 33 is fixed to each of the four side surfaces of the box member 31.
  • a blowout opening 31a is formed at a position facing the opening of the cylindrical connecting member 33.
  • the lower surface of the box member 31 is open.
  • the indoor heat exchanger 42 is generally in the shape of a square cylinder.
  • the indoor fan 43 is a turbo fan and blows out the air sucked from below to the side. The air blown out from the indoor fan 43 flows to the duct 53 through the indoor heat exchanger 42.
  • the drain pan 46 is a resin member.
  • a bottom plate member 32 is arranged under the drain pan 46.
  • the bottom plate member 32 is a member having a quadrangular outer edge in a plan view, and has a circular opening formed in the center.
  • the circular opening of the bottom plate member 32 serves as a suction port 32b for guiding air from below to the indoor fan 43.
  • the upper end of the canvas member 95 which will be described later, is detachably attached to the bottom plate member 32.
  • the bottom plate member 32 has a holding portion 32a that detachably holds the flat plate-shaped air filter 39.
  • the box member 31 is suspended from a beam (not shown) in the space SP2 behind the ceiling. In this state, a large gap G1 (see FIG. 4) is formed between the box member 31 and the bottom plate member 32 constituting the main body casing and the ceiling 90 in the height direction.
  • the indoor unit 30 has a flat panel 35, an annular frame 60, and a frame member at positions separated downward from the box member 31 and the bottom plate member 32 constituting the main body casing. Has 80 and. Further, the air filter 39 is arranged immediately below the bottom plate member 32.
  • Air filter 39 is a member having a substantially square shape in a plan view, and is fixed to a flange 38.
  • the air filter 39 is attached in a state parallel to the horizontal plane.
  • the flange 38 located on the outside of the air filter 39 is supported by the holding portion 32a of the bottom plate member 32 described above (see FIG. 4).
  • the flange 38 and the air filter 39 can be removed from the holding portion 32a by shifting the flange 38 from the holding portion 32a in a plane.
  • (2-2-2) Frame member The frame member 80 is fixed to the box member 31 via a support member (not shown).
  • the flat panel 35 and the annular frame 60 are detachably supported on the frame member 80.
  • the flat panel 35 is located below the suction port 32b of the bottom plate member 32 and the air filter 39 that covers the suction port 32b.
  • the annular frame 60 is an annular member having four sides. As shown in FIG. 4, the outer edge of the annular frame 60 is arranged so as to be adjacent to the inner edge of the frame member 80.
  • the annular frame 60 is attached to the frame member 80 by a detachable mechanism (not shown) composed of a claw or a spring member.
  • the flat panel 35 is a plate member made of resin that is substantially square in a plan view. Neither slits nor holes are formed in the flat panel 35. As shown in FIG. 6, the flat panel 35 has a central portion 35a located directly below the air filter 39 in the installed state, and an outer peripheral portion (non-central portion) 35b around the central portion 35a. However, there is no structural difference between the central portion 35a and the outer peripheral portion 35b, and the central portion 35a and the outer peripheral portion 35b are continuous and integral resin members. In other words, the central portion 35a is a portion of the flat panel 35 that overlaps with the air filter 39 in a plan view. The outer peripheral portion 35b is a portion of the flat panel 35 that does not overlap with the air filter 39 in a plan view.
  • the canvas member 95 is a thick woven fabric having a square tube shape that opens vertically.
  • the upper end of the canvas member 95 is fixed to the outside of the holding portion 32a of the bottom plate member 32.
  • the lower end of the canvas member 95 is connected to the upper end of the inner peripheral portion of the frame member 80.
  • the upper opening and the lower opening of the canvas member 95 are both square. Then, as shown in FIG. 4, the opening above the canvas member 95 is smaller than the opening below the canvas member 95.
  • FIG. 5 is a drawing for comparing the sizes of the flat panel 35 and the air filter 39 in a bottom view. Since the air filter 39 is hidden by the flat panel 35 in the bottom view, in FIG. 5, the flat panel 35 is shown by a two-dot chain line to display the air filter 39, and the flat panel 35 is seen through.
  • the flat panel 35 and the air filter 39 are arranged so that the outer edge of the air filter 39 is located inside the outer edge of the flat panel 35 in the bottom view.
  • the flat panel 35 is larger than the air filter 39. Therefore, when the indoor unit 30 is looked up from directly below, the air filter 39 is completely hidden by the flat panel 35.
  • the distance between the outer edge of the flat panel 35 and the outer edge of the air filter 39 in the bottom view is measured on each of the four sides, the distance differs depending on the cross section, as in the first distance L1 and the second distance L2 in FIG.
  • the vertical cross section having the smallest distance is the vertical cross section when cut at the vertical face VP shown in FIG. Is.
  • a vertical cross-sectional view when cut at this vertical VP is shown in FIG.
  • the virtual straight line IML connecting one end 39e of the air filter 39 and one end 35e of the flat panel 35 close to one end 39e of the air filter 39 is inclined with respect to the vertical plane.
  • the virtual straight line IML is tilted by a first angle A1 with respect to the vertical straight line VL passing through one end 39e of the air filter 39 in the vertical sectional view of FIG.
  • the indoor unit 30 is designed so that the first angle A1 is 5 ° to 60 °.
  • the preferable range of the first angle A1 is 5 ° to 40 ° in view of the miniaturization of the indoor unit 30 and the ventilation resistance value (size) of the air filter 39.
  • the dust DU1 can be dropped. Most of the dust DU1 is received by the flat panel 35. The dust received by the flat panel 35 will be accumulated on the flat panel 35 (see the dust DU2 in FIG. 6).
  • the indoor unit 30 of the air conditioner 10 of the present embodiment includes a box member 31 and a bottom plate member 32 that function as a main body casing, an air filter 39, and a flat panel 35. ..
  • the box member 31 and the bottom plate member 32 are installed above the air-conditioning target space SP1 and accommodate the indoor fan 43 and the indoor heat exchanger 42.
  • An air suction port 32b is formed on the lower surface of the bottom plate member 32.
  • the air filter 39 collects dust contained in the air passing through the suction port 32b.
  • the flat panel 35 is located below the air filter 39, as shown in FIGS. 4 and 6. In plan view, the flat panel 35 is larger than the air filter 39.
  • the flat panel 35 and the air filter 39 are arranged so that the outer edge of the air filter 39 is located inside the outer edge of the flat panel 35 in a plan view.
  • the dust DU1 (see FIG. 6) collected by the air filter 39 also falls due to the flat panel 35. You can receive the incoming dust.
  • the flat panel 35 has a central portion 35a and an outer peripheral portion 35b.
  • the central portion 35a is a portion that overlaps with the air filter 39 in a plan view.
  • the outer peripheral portion 35b is a portion that does not overlap with the air filter 39 in a plan view.
  • the central portion 35a of the flat panel 35 is not formed with an opening that penetrates vertically. When dust falls from the air filter 39, the central portion 35a of the flat panel 35 mainly receives the dust.
  • the indoor unit 30 is configured so that the flat panel 35 can receive most of the dust even when the dust falls from the air filter 39. There is. As a result, the dust DU1 collected by the air filter 39 is suppressed from falling into the air conditioning target space SP1.
  • the inclination of the virtual straight line IML connecting one end 39e of the air filter 39 and one end 35e of the flat panel 35 close to one end 39e of the air filter 39 is increased to some extent. It is set. More specifically, the first angle, which is the inclination of the virtual straight line IML with respect to the vertical plane, is set in the range of 5 ° to 60 °. Here, since the first angle is not less than 5 ° but has a certain size, even if the dust that has fallen from the air filter 39 falls slightly diagonally downward instead of directly below, most of the dust is flattened. It can be received by the panel 35.
  • the panel 135 shown in FIG. 7 has a wall portion 135c in addition to a central portion 135a corresponding to the central portion 35a of the flat panel 35 and an outer peripheral portion 135b corresponding to the outer peripheral portion 35b of the flat panel 35 described above. ing.
  • the wall portion 135c extends outward and diagonally upward from the outer peripheral portion 135b.
  • the wall portion 135c may extend directly above the outer peripheral portion 135b. Further, the wall portion 135c may be extended upward from the outer edge of the central portion 135a, and the outer peripheral portion 135b may be eliminated.
  • the indoor unit 30 is arranged in the installation space SP2 (the space above the ceiling 90) located above the air-conditioned space SP1 in the room.
  • the indoor unit 30 may be arranged in the air-conditioned space SP1 which is the space under the ceiling 90, and the entire indoor unit 30 may be suspended from the ceiling 90.
  • the ceiling 90 does not exist around (near) the flat panel 35, so that the flat panel 35 The size of the above in a plan view can be further increased.

Abstract

An indoor unit (30) of an air conditioning device (10) comprising: a box member (31) and a bottom plate member (32) functioning as a main body casing; an air filter (39); and a flat panel (35) positioned below the air filter (39). An intake port (32b) is formed on a lower surface of the bottom plate member (32). The air filter (39) collects dust contained in air passing through the intake port (32b). In a plan view, the flat panel (35) is larger than the air filter (39). In the plan view, the flat panel (35) and the air filter (39) are arranged such that an outer edge of the air filter (39) is positioned to the inside of an outer edge of the flat panel (35).

Description

空調ユニットAir conditioning unit
　空調ユニット、特に、空気の吸込口が下面に形成されている空調ユニットに関する。 Regarding the air conditioning unit, especially the air conditioning unit in which the air suction port is formed on the lower surface.
　特許文献１（特開２００１－２７４２８号公報）に、部屋の天井裏に設置される空調ユニットから吹出ダクトを延ばし、空調空気の吹出位置を空調ユニットの本体から離す発明が開示されている。吹出ダクトは、空調ユニットの本体の側面から延びている。一方、吸込口は、空調ユニットの本体の下面に形成されている。 Patent Document 1 (Japanese Unexamined Patent Publication No. 2001-27428) discloses an invention in which an air-conditioning duct is extended from an air-conditioning unit installed behind the ceiling of a room to separate the air-conditioning air from the main body of the air-conditioning unit. The outlet duct extends from the side surface of the main body of the air conditioning unit. On the other hand, the suction port is formed on the lower surface of the main body of the air conditioning unit.
　このような空調ユニットでは、本体の下に吸込口パネルが設けられることが多い。吸込口パネルは、空調ユニットの本体の少なくとも一部を隠し、見栄えを向上させる。上記の特許文献１（特開２００１－２７４２８号公報）では、スリット等の多数の開口が形成された吸込口パネルを備えており、見栄えの向上とともに、部屋の空気を空調ユニットの本体の吸込口へと導く。そして、空調ユニットの点検保守時には、吸込口パネルを取り外す。 In such an air conditioning unit, a suction port panel is often provided under the main body. The suction panel hides at least a part of the main body of the air conditioning unit to improve the appearance. In the above-mentioned Patent Document 1 (Japanese Unexamined Patent Publication No. 2001-27428), a suction port panel in which a large number of openings such as slits are formed is provided, and the air in the room is sucked into the main body of the air conditioning unit while improving the appearance. Lead to. Then, when inspecting and maintaining the air conditioning unit, the suction port panel is removed.
　しかし、吸込口パネルの中央部にスリット等の開口が形成されていると、運転停止時などに塵や埃（以下、塵埃という。）が開口から部屋に落下してくる恐れがある。 However, if an opening such as a slit is formed in the center of the suction port panel, dust or dust (hereinafter referred to as dust) may fall from the opening into the room when the operation is stopped.
　第１観点の空調ユニットは、本体ケーシングと、フィルタと、板状部材と、を備えている。本体ケーシングは、空調対象空間の上部又は上方に設置されている。本体ケーシングは、ファン及び熱交換器を収容する。本体ケーシングの下面には、空気の吸込口が形成されている。フィルタは、吸込口を通る空気に含まれる塵埃を捕集する。板状部材は、フィルタの下方に位置する。平面視において、板状部材は、フィルタよりも大きい。平面視において板状部材の外縁の内側にフィルタの外縁が位置するように、板状部材及びフィルタが配置されている。 The air conditioning unit of the first aspect includes a main body casing, a filter, and a plate-shaped member. The main body casing is installed above or above the air-conditioned space. The main body casing houses the fan and heat exchanger. An air suction port is formed on the lower surface of the main body casing. The filter collects dust contained in the air passing through the suction port. The plate-like member is located below the filter. In plan view, the plate-like member is larger than the filter. The plate-shaped member and the filter are arranged so that the outer edge of the filter is located inside the outer edge of the plate-shaped member in a plan view.
　ここでは、平面視において板状部材の外縁の内側にフィルタの外縁が位置するため、フィルタが捕集した塵埃が落下したときにも、落下してくる塵埃を板状部材によって受けることができる。 Here, since the outer edge of the filter is located inside the outer edge of the plate-shaped member in a plan view, even when the dust collected by the filter falls, the falling dust can be received by the plate-shaped member.
　第２観点の空調ユニットは、第１観点の空調ユニットであって、板状部材は、中央部と、非中央部とを有している。中央部は、平面視においてフィルタと重なる部分である。非中央部は、平面視においてフィルタと重ならない部分である。板状部材の中央部には、上下に貫通する開口が形成されていない。フィルタから塵埃が落ちた場合には、板状部材の中央部が塵埃を受ける。 The air conditioning unit of the second viewpoint is the air conditioning unit of the first viewpoint, and the plate-shaped member has a central portion and a non-central portion. The central portion is a portion that overlaps the filter in a plan view. The non-central part is a part that does not overlap with the filter in a plan view. An opening that penetrates vertically is not formed in the central portion of the plate-shaped member. When dust falls from the filter, the central portion of the plate-shaped member receives the dust.
　ここでは、少なくとも板状部材の中央部には開口を設けず、フィルタから塵埃が落ちた場合にも板状部材によって塵埃の殆どを受けることができるように空調ユニットが構成されている。これにより、フィルタで捕集した塵埃が空調対象空間へと落ちていくことが抑制される。 Here, no opening is provided at least in the central portion of the plate-shaped member, and the air conditioning unit is configured so that most of the dust can be received by the plate-shaped member even when dust falls from the filter. As a result, the dust collected by the filter is suppressed from falling into the air-conditioned space.
　第３観点の空調ユニットは、第２観点の空調ユニットであって、板状部材は、さらに壁部を有している。板状部材の壁部は、板状部材の中央部の外縁から上に向かって延びる、あるいは、板状部材の非中央部から上に向かって延びる。 The air conditioning unit of the third viewpoint is the air conditioning unit of the second viewpoint, and the plate-shaped member further has a wall portion. The wall portion of the plate-shaped member extends upward from the outer edge of the central portion of the plate-shaped member, or extends upward from the non-central portion of the plate-shaped member.
　ここでは、壁部を設けているため、フィルタから落ちて板状部材の中央部によって受けられた塵埃が横に動いて空調対象空間に落ちてしまうことが抑制される。 Since the wall portion is provided here, it is possible to prevent the dust that falls from the filter and is received by the central portion of the plate-shaped member from moving sideways and falling into the air-conditioned space.
　第４観点の空調ユニットは、第１観点から第３観点のいずれかの空調ユニットであって、第１角度が、５°～６０°である。第１角度は、縦断面視における仮想の直線と、縦断面視におけるフィルタの一端を通る鉛直線と、が為す角度である。縦断面の切断面は、平面視におけるフィルタの図心を含む任意の鉛直面である。縦断面視における仮想の直線は、縦断面視におけるフィルタの一端と、そのフィルタの一端に近い縦断面視における板状部材の一端とを結ぶ直線である。 The air-conditioning unit of the fourth viewpoint is any of the air-conditioning units of the first to third viewpoints, and the first angle is 5 ° to 60 °. The first angle is an angle formed by a virtual straight line in the vertical cross-sectional view and a vertical straight line passing through one end of the filter in the vertical cross-sectional view. The cut surface of the vertical section is any vertical plane, including the centroid of the filter in plan view. The virtual straight line in the vertical cross-sectional view is a straight line connecting one end of the filter in the vertical cross-sectional view and one end of the plate-shaped member in the vertical cross-sectional view close to one end of the filter.
　ここでは、第１角度が５°未満ではなく、ある程度の大きさになっているため、フィルタから落ちた塵埃が真下ではなく少し斜め下方に落ちた場合にも、その塵埃を板状部材によって概ね受けることができる。 Here, since the first angle is not less than 5 ° but has a certain size, even if the dust that has fallen from the filter falls slightly diagonally downward instead of directly below, the dust is generally removed by the plate-shaped member. Can receive.
　第５観点の空調ユニットは、第１観点から第４観点のいずれかの空調ユニットであって、本体ケーシングの側面には、空気の吹出口が形成されている。 The air-conditioning unit of the fifth viewpoint is any of the air-conditioning units of the first to fourth viewpoints, and an air outlet is formed on the side surface of the main body casing.
空気調和装置の冷媒配管系統を示す図。The figure which shows the refrigerant piping system of an air conditioner. 室内ユニットから延びるダクト及び吹出ユニットの一例を示す斜視図。The perspective view which shows an example of the duct extending from an indoor unit and a blowout unit. 室内ユニットから延びるダクト及び吹出ユニットの他の例を示す斜視図。Perspective view showing another example of a duct extending from an indoor unit and a blowout unit. 室内ユニットの縦断面図。Vertical sectional view of the indoor unit. フラットパネルとエアフィルタとの下面視における大きさを比較する図。The figure which compares the size of a flat panel and an air filter in the bottom view. 図５のVI-VI矢視のフラットパネル及びエアフィルタの配置を示す縦断面図。FIG. 5 is a vertical cross-sectional view showing the arrangement of the flat panel and the air filter viewed from the arrow VI of FIG. 変形例１に係る室内ユニットの側壁付きパネルとフィルタとの配置を示す縦断面図。The vertical cross-sectional view which shows the arrangement of the panel with a side wall of the indoor unit which concerns on modification 1 and a filter.
　（１）空気調和装置の全体構成
　図１は、複数の室内ユニット及び室外ユニットを有する空気調和装置１０の冷媒配管系統を示す図である。空気調和装置１０は、蒸気圧縮式の冷凍サイクル運転を行うことによって建物内の部屋を冷暖房する装置である。空気調和装置１０は、熱源ユニットとしての室外ユニット２０と、多数の利用ユニットとしての室内ユニット３０と、室外ユニット２０と室内ユニット３０とを接続する第１冷媒連絡管６及び第２冷媒連絡管７とを備えている。空気調和装置１０の冷媒回路は、室外ユニット２０と、室内ユニット３０と、冷媒連絡管６、７とが接続されることによって構成されている。そして、冷媒回路内には、冷媒が封入されており、冷媒が圧縮され、冷却され、減圧され、加熱・蒸発された後に、再び圧縮されるという冷凍サイクル運転が行われるようになっている。冷媒としては、例えば、Ｒ４１０Ａ、Ｒ４０７Ｃ、Ｒ３２、Ｒ１３４ａ、二酸化炭素、などから選択されたものが用いられる。 (1) Overall Configuration of Air Conditioner FIG. 1 is a diagram showing a refrigerant piping system of an air conditioner 10 having a plurality of indoor units and outdoor units. The air conditioner 10 is a device that heats and cools a room in a building by performing a vapor compression refrigeration cycle operation. The air conditioner 10 includes an outdoor unit 20 as a heat source unit, an indoor unit 30 as a large number of utilization units, and a first refrigerant connecting pipe 6 and a second refrigerant connecting pipe 7 connecting the outdoor unit 20 and the indoor unit 30. And have. The refrigerant circuit of the air conditioner 10 is configured by connecting the outdoor unit 20, the indoor unit 30, and the refrigerant connecting pipes 6 and 7. Then, the refrigerant is sealed in the refrigerant circuit, and the refrigerating cycle operation is performed in which the refrigerant is compressed, cooled, depressurized, heated and evaporated, and then compressed again. As the refrigerant, for example, one selected from R410A, R407C, R32, R134a, carbon dioxide, and the like is used.
　また、室内ユニット３０から吹き出される空調空気（冷風あるいは温風）は、図２や図３に示すように、ダクト５３を介して吹出ユニット５５から部屋の空調対象空間ＳＰ１に供給される。 Further, as shown in FIGS. 2 and 3, the air-conditioned air (cold air or hot air) blown out from the indoor unit 30 is supplied from the blowout unit 55 to the air-conditioned space SP1 of the room via the duct 53.
　（１－１）室外ユニット
　室外ユニット２０は、建物の外あるいは建物の地下室などに設置される。室外ユニット２０は、主として、圧縮機２１と、四路切換弁２２と、室外熱交換器２３と、室外膨張弁２６と、アキュムレータ２９とを有している。四路切換弁２２を切り換えることによって、冷房運転と暖房運転とが切り換わる。室外熱交換器２３は、冷媒の放熱器又は蒸発器として機能する熱交換器である。 (1-1) Outdoor unit The outdoor unit 20 is installed outside the building or in the basement of the building. The outdoor unit 20 mainly includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 26, and an accumulator 29. By switching the four-way switching valve 22, the cooling operation and the heating operation are switched. The outdoor heat exchanger 23 is a heat exchanger that functions as a radiator or evaporator for the refrigerant.
　また、室外ユニット２０は、ユニット内に室外空気を吸入して、再び室外に排出するための室外ファン２７を有している。室外ファン２７は、室外空気と室外熱交換器２３を流れる冷媒との間で熱交換をさせる。 Further, the outdoor unit 20 has an outdoor fan 27 for sucking outdoor air into the unit and discharging it to the outside again. The outdoor fan 27 causes heat exchange between the outdoor air and the refrigerant flowing through the outdoor heat exchanger 23.
　（１－２）室内ユニット
　室内ユニット３０は、建物内の各階の天井（天井裏の空間を含む）などに設置される。各室内ユニット３０は、主として、減圧器である室内膨張弁４１と、利用側熱交換器としての室内熱交換器４２とを有している。 (1-2) Indoor unit The indoor unit 30 is installed on the ceiling (including the space behind the ceiling) of each floor in the building. Each indoor unit 30 mainly has an indoor expansion valve 41 which is a decompressor and an indoor heat exchanger 42 as a user-side heat exchanger.
　室内膨張弁４１は、冷媒を減圧するための機構であり、開度調整が可能な電動弁である。室内膨張弁４１は、その一端が第１冷媒連絡管６に接続され、その他端が室内熱交換器４２に接続されている。 The indoor expansion valve 41 is a mechanism for reducing the pressure of the refrigerant, and is an electric valve whose opening degree can be adjusted. One end of the indoor expansion valve 41 is connected to the first refrigerant connecting pipe 6, and the other end is connected to the indoor heat exchanger 42.
　室内熱交換器４２は、冷媒の蒸発器又は放熱器として機能する熱交換器である。室内熱交換器４２は、その一端が室内膨張弁４１に接続され、その他端が第２冷媒連絡管７に接続されている。 The indoor heat exchanger 42 is a heat exchanger that functions as a refrigerant evaporator or radiator. One end of the indoor heat exchanger 42 is connected to the indoor expansion valve 41, and the other end is connected to the second refrigerant connecting pipe 7.
　また、室内ユニット３０は、ユニット内に室内空気を吸入して、再び室内に供給するための室内ファン４３を備えており、室内空気と室内熱交換器４２を流れる冷媒との間で熱交換をさせる。 Further, the indoor unit 30 includes an indoor fan 43 for sucking indoor air into the unit and supplying it to the room again, and exchanges heat between the indoor air and the refrigerant flowing through the indoor heat exchanger 42. Let me.
　（１－３）吹出ユニット
　吹出ユニット５５は、図２や図３に示すように、室内ユニット３０から離れた場所に設置され、室内ユニット３０からダクト５３を介して送られてきた空調空気を部屋の空調対象空間ＳＰ１に吹き出すユニットである。吹出ユニット５５には、ダクト５３を接続する１又は複数の接続口と、空調対象空間ＳＰ１に露出する吹出口５５ａとが形成されている。 (1-3) Blow-out unit As shown in FIGS. 2 and 3, the blow-out unit 55 is installed at a place away from the indoor unit 30, and air-conditioned air sent from the indoor unit 30 through the duct 53 is taken into the room. It is a unit that blows out to the air-conditioned space SP1. The outlet unit 55 is formed with one or a plurality of connection ports for connecting the duct 53 and an outlet 55a exposed to the air-conditioned space SP1.
　なお、本実施形態においては、室内ユニット３０も吹出ユニット５５も、部屋の空調対象空間ＳＰ１の上方に位置する設置空間ＳＰ２に配置されている。この設置空間ＳＰ２は、後述する部屋の天井９０の裏（上）の空間である。 In the present embodiment, both the indoor unit 30 and the blowout unit 55 are arranged in the installation space SP2 located above the air-conditioned space SP1 in the room. This installation space SP2 is a space behind (above) the ceiling 90 of the room described later.
　（２）室内ユニットの詳細構成
　次に、図４を参照して、室内ユニット３０の詳細な構造について説明する。 (2) Detailed Configuration of Indoor Unit Next, the detailed structure of the indoor unit 30 will be described with reference to FIG.
　（２－１）本体ケーシング及び本体ケーシングに収容される部品
　図４に示すように、空調対象空間ＳＰ１を含む部屋の天井９０の上方（空間ＳＰ２）に、室内ユニット３０が配置されている。室内ユニット３０は、金属製の箱部材３１及び底板部材３２を有している。これらの箱部材３１及び底板部材３２は、本体ケーシングとしての機能を果たす。上述の室内膨張弁４１、室内熱交換器４２及び室内ファン４３も、箱部材３１の中に収容されている。また、室内ユニット３０は、室内熱交換器４２における結露水を受けるためのドレンパン４６、室内ファン４３に対応して設けられているベルマウス４４、ダクト５３との接続に用いる接続部材３３などを有している。ドレンパン４６及びベルマウス４４は、箱部材３１の中に収容されている。接続部材３３は、箱部材３１の４つの側面それぞれに固定される。箱部材３１の側面には、円筒状の接続部材３３の開口と対向する位置に、吹出用開口３１ａが形成されている。箱部材３１の下面は、開口している。 (2-1) Main body casing and parts housed in the main body casing As shown in FIG. 4, the indoor unit 30 is arranged above the ceiling 90 (space SP2) of the room including the air-conditioned space SP1. The indoor unit 30 has a metal box member 31 and a bottom plate member 32. The box member 31 and the bottom plate member 32 function as a main body casing. The above-mentioned indoor expansion valve 41, indoor heat exchanger 42, and indoor fan 43 are also housed in the box member 31. Further, the indoor unit 30 includes a drain pan 46 for receiving condensed water in the indoor heat exchanger 42, a bell mouth 44 provided corresponding to the indoor fan 43, a connecting member 33 used for connecting to the duct 53, and the like. are doing. The drain pan 46 and the bell mouth 44 are housed in the box member 31. The connecting member 33 is fixed to each of the four side surfaces of the box member 31. On the side surface of the box member 31, a blowout opening 31a is formed at a position facing the opening of the cylindrical connecting member 33. The lower surface of the box member 31 is open.
　室内熱交換器４２は、概ね四角筒の形状である。室内ファン４３は、ターボファンであり、下から吸い込んだ空気を側方に吹き出す。室内ファン４３から吹き出された空気は、室内熱交換器４２を通ってダクト５３へと流れる。 The indoor heat exchanger 42 is generally in the shape of a square cylinder. The indoor fan 43 is a turbo fan and blows out the air sucked from below to the side. The air blown out from the indoor fan 43 flows to the duct 53 through the indoor heat exchanger 42.
　ドレンパン４６は、樹脂製部材である。ドレンパン４６の下には、底板部材３２が配置されている。底板部材３２は、平面視で外縁が四角形の部材であり、中央に円形開口が形成されている。この底板部材３２の円形開口は、下方から室内ファン４３へと空気を導く吸込口３２ｂとなる。底板部材３２には、後述するキャンバス製部材９５の上端が着脱自在に装着される。また、底板部材３２は、平板状のエアフィルタ３９を着脱自在に保持する保持部３２ａを有している。 The drain pan 46 is a resin member. A bottom plate member 32 is arranged under the drain pan 46. The bottom plate member 32 is a member having a quadrangular outer edge in a plan view, and has a circular opening formed in the center. The circular opening of the bottom plate member 32 serves as a suction port 32b for guiding air from below to the indoor fan 43. The upper end of the canvas member 95, which will be described later, is detachably attached to the bottom plate member 32. Further, the bottom plate member 32 has a holding portion 32a that detachably holds the flat plate-shaped air filter 39.
　箱部材３１は、天井裏の空間ＳＰ２にある梁（図示せず）から吊り下げられる。この状態で、本体ケーシングを構成する箱部材３１及び底板部材３２と天井９０との間には、高さ方向に大きな隙間Ｇ１（図４参照）ができる。 The box member 31 is suspended from a beam (not shown) in the space SP2 behind the ceiling. In this state, a large gap G1 (see FIG. 4) is formed between the box member 31 and the bottom plate member 32 constituting the main body casing and the ceiling 90 in the height direction.
　（２－２）本体ケーシングの下方の部品
　さらに、室内ユニット３０は、本体ケーシングを構成する箱部材３１及び底板部材３２から下方に離れた位置に、フラットパネル３５と、環状フレーム６０と、枠部材８０とを有している。また、底板部材３２の直ぐ下に、エアフィルタ３９が配置される。 (2-2) Parts Below the Main Body Casing Further, the indoor unit 30 has a flat panel 35, an annular frame 60, and a frame member at positions separated downward from the box member 31 and the bottom plate member 32 constituting the main body casing. Has 80 and. Further, the air filter 39 is arranged immediately below the bottom plate member 32.
　（２－２－１）エアフィルタ
　エアフィルタ３９は、平面視において概ね正方形の部材であり、フランジ３８に固定されている。エアフィルタ３９は、水平面に平行な状態で取り付けられる。具体的には、エアフィルタ３９の外側に位置するフランジ３８が、上述の底板部材３２の保持部３２ａによって支えられる（図４参照）。フランジ３８を保持部３２ａから平面的にずらすことで、保持部３２ａからフランジ３８及びエアフィルタ３９を外すことができる。 (2-2-1) Air filter The air filter 39 is a member having a substantially square shape in a plan view, and is fixed to a flange 38. The air filter 39 is attached in a state parallel to the horizontal plane. Specifically, the flange 38 located on the outside of the air filter 39 is supported by the holding portion 32a of the bottom plate member 32 described above (see FIG. 4). The flange 38 and the air filter 39 can be removed from the holding portion 32a by shifting the flange 38 from the holding portion 32a in a plane.
　（２－２－２）枠部材
　枠部材８０は、図示しない支持部材を介して、箱部材３１に固定される。この枠部材８０に、フラットパネル３５及び環状フレーム６０が着脱自在に支持される。 (2-2-2) Frame member The frame member 80 is fixed to the box member 31 via a support member (not shown). The flat panel 35 and the annular frame 60 are detachably supported on the frame member 80.
　（２－２－３）フラットパネル及び環状フレーム
　フラットパネル３５及び環状フレーム６０は、別の部材であるが、図示しない連結部材を介して一体化されている。一体化されている両部材、フラットパネル３５と環状フレーム６０との間には、図２～図４に示すように、環状の隙間ＳＬ１が形成される。この隙間ＳＬ１は、空調対象空間ＳＰ１の空気を底板部材３２の吸込口３２ｂへと導く経路の一部となる（図４において点線で示す吸込空気流れＦＬを参照）。 (2-2-3) Flat panel and annular frame The flat panel 35 and the annular frame 60 are separate members, but are integrated via a connecting member (not shown). As shown in FIGS. 2 to 4, an annular gap SL1 is formed between the two integrated members, the flat panel 35 and the annular frame 60. This gap SL1 becomes a part of the path that guides the air in the air-conditioned space SP1 to the suction port 32b of the bottom plate member 32 (see the suction air flow FL shown by the dotted line in FIG. 4).
　フラットパネル３５は、図４に示すように、底板部材３２の吸込口３２ｂ及びその吸込口３２ｂを覆うエアフィルタ３９の下方に位置している。 As shown in FIG. 4, the flat panel 35 is located below the suction port 32b of the bottom plate member 32 and the air filter 39 that covers the suction port 32b.
　環状フレーム６０は、四辺を有する環状の部材である。図４に示すように、環状フレーム６０の外縁は、枠部材８０の内縁と隣り合うように配置される。爪やバネ部材から成る着脱機構（図示せず）によって、環状フレーム６０が枠部材８０に装着される。 The annular frame 60 is an annular member having four sides. As shown in FIG. 4, the outer edge of the annular frame 60 is arranged so as to be adjacent to the inner edge of the frame member 80. The annular frame 60 is attached to the frame member 80 by a detachable mechanism (not shown) composed of a claw or a spring member.
　フラットパネル３５は、平面視において概ね正方形の樹脂製の板部材である。フラットパネル３５には、スリットも孔も形成されていない。フラットパネル３５は、図６に示すように、設置状態においてエアフィルタ３９の真下に位置する中央部３５ａと、その中央部３５ａの周囲の外周部（非中央部）３５ｂとを有する。但し、中央部３５ａと外周部３５ｂとの間に構造上の違いが存在する訳ではなく、中央部３５ａと外周部３５ｂとは連続した一体の樹脂製部材である。中央部３５ａは、言い換えると、フラットパネル３５のうち、平面視においてエアフィルタ３９と重なる部分である。外周部３５ｂは、フラットパネル３５のうち、平面視においてエアフィルタ３９と重ならない部分である。 The flat panel 35 is a plate member made of resin that is substantially square in a plan view. Neither slits nor holes are formed in the flat panel 35. As shown in FIG. 6, the flat panel 35 has a central portion 35a located directly below the air filter 39 in the installed state, and an outer peripheral portion (non-central portion) 35b around the central portion 35a. However, there is no structural difference between the central portion 35a and the outer peripheral portion 35b, and the central portion 35a and the outer peripheral portion 35b are continuous and integral resin members. In other words, the central portion 35a is a portion of the flat panel 35 that overlaps with the air filter 39 in a plan view. The outer peripheral portion 35b is a portion of the flat panel 35 that does not overlap with the air filter 39 in a plan view.
　（２－３）キャンバス製部材
　キャンバス製部材９５は、上下に開口する角筒状の厚地の織物である。キャンバス製部材９５の上端は、底板部材３２の保持部３２ａの外側に固定される。キャンバス製部材９５の下端は、枠部材８０の内周部の上端に接続される。キャンバス製部材９５の上の開口及び下の開口は、ともに正方形である。そして、図４に示すように、キャンバス製部材９５の上の開口は、キャンバス製部材９５の下の開口よりも小さい。 (2-3) Canvas member The canvas member 95 is a thick woven fabric having a square tube shape that opens vertically. The upper end of the canvas member 95 is fixed to the outside of the holding portion 32a of the bottom plate member 32. The lower end of the canvas member 95 is connected to the upper end of the inner peripheral portion of the frame member 80. The upper opening and the lower opening of the canvas member 95 are both square. Then, as shown in FIG. 4, the opening above the canvas member 95 is smaller than the opening below the canvas member 95.
　（３）フラットパネル及びエアフィルタの大きさと配置
　図５は、フラットパネル３５及びエアフィルタ３９の下面視における大きさを比較するための図面である。下面視ではエアフィルタ３９がフラットパネル３５によって隠れてしまうので、図５では、エアフィルタ３９を表示するため、フラットパネル３５を二点鎖線で示し、フラットパネル３５を透視している。 (3) Size and Arrangement of Flat Panel and Air Filter FIG. 5 is a drawing for comparing the sizes of the flat panel 35 and the air filter 39 in a bottom view. Since the air filter 39 is hidden by the flat panel 35 in the bottom view, in FIG. 5, the flat panel 35 is shown by a two-dot chain line to display the air filter 39, and the flat panel 35 is seen through.
　図５から明らかなように、下面視において、フラットパネル３５の外縁の内側にエアフィルタ３９の外縁が位置するように、フラットパネル３５及びエアフィルタ３９が配置されている。当然、平面視において、フラットパネル３５は、エアフィルタ３９よりも大きい。したがって、室内ユニット３０を真下から見上げると、フラットパネル３５によって完全にエアフィルタ３９が隠れる。 As is clear from FIG. 5, the flat panel 35 and the air filter 39 are arranged so that the outer edge of the air filter 39 is located inside the outer edge of the flat panel 35 in the bottom view. Naturally, in a plan view, the flat panel 35 is larger than the air filter 39. Therefore, when the indoor unit 30 is looked up from directly below, the air filter 39 is completely hidden by the flat panel 35.
　４つの各辺において、フラットパネル３５の外縁とエアフィルタ３９の外縁との下面視における距離を図ると、図５における第１距離Ｌ１、第２距離Ｌ２のように、断面によって距離が異なる。平面視におけるエアフィルタ３９の図心３９Ｍを含む任意の鉛直面で切断したときの縦断面のうち、この距離が最も小さくなる縦断面は、図５に示す鉛直面ＶＰで切断したときの縦断面である。この鉛直面ＶＰで切断したときの縦断面図を、図６に示す。 When the distance between the outer edge of the flat panel 35 and the outer edge of the air filter 39 in the bottom view is measured on each of the four sides, the distance differs depending on the cross section, as in the first distance L1 and the second distance L2 in FIG. Of the vertical cross sections of the air filter 39 in plan view when cut at any vertical plane including the center of gravity 39M, the vertical cross section having the smallest distance is the vertical cross section when cut at the vertical face VP shown in FIG. Is. A vertical cross-sectional view when cut at this vertical VP is shown in FIG.
　図６に示すように、エアフィルタ３９の一端３９ｅと、そのエアフィルタ３９の一端３９ｅに近いフラットパネル３５の一端３５ｅとを結ぶ仮想の直線ＩＭＬは、鉛直面に対して傾いている。具体的には、仮想の直線ＩＭＬは、図６の縦断面図においてエアフィルタ３９の一端３９ｅを通る鉛直線ＶＬに対して、第１角度Ａ１だけ傾いている。本実施形態では、第１角度Ａ１が５°～６０°となるように、室内ユニット３０が設計されている。第１角度Ａ１の好ましい範囲は、室内ユニット３０の小型化やエアフィルタ３９の通風抵抗値（サイズ）に鑑みると、５°～４０°である。 As shown in FIG. 6, the virtual straight line IML connecting one end 39e of the air filter 39 and one end 35e of the flat panel 35 close to one end 39e of the air filter 39 is inclined with respect to the vertical plane. Specifically, the virtual straight line IML is tilted by a first angle A1 with respect to the vertical straight line VL passing through one end 39e of the air filter 39 in the vertical sectional view of FIG. In the present embodiment, the indoor unit 30 is designed so that the first angle A1 is 5 ° to 60 °. The preferable range of the first angle A1 is 5 ° to 40 ° in view of the miniaturization of the indoor unit 30 and the ventilation resistance value (size) of the air filter 39.
　第１角度Ａ１が少なくとも５°であれば、エアフィルタ３９で捕集されエアフィルタ３０の下面に付いた塵埃ＤＵ１が、室内ファン４３が停止しているときに落下してしまったとしても、その塵埃ＤＵ１の殆どはフラットパネル３５によって受け止められる。フラットパネル３５に受け止められた塵埃は、フラットパネル３５の上に積もることになる（図６の塵埃ＤＵ２を参照）。 If the first angle A1 is at least 5 °, even if the dust DU1 collected by the air filter 39 and attached to the lower surface of the air filter 30 falls when the indoor fan 43 is stopped, the dust DU1 can be dropped. Most of the dust DU1 is received by the flat panel 35. The dust received by the flat panel 35 will be accumulated on the flat panel 35 (see the dust DU2 in FIG. 6).
　（４）特徴
　（４－１）
　本実施形態の空気調和装置１０の室内ユニット３０は、図４に示すように、本体ケーシングとしての機能を果たす箱部材３１及び底板部材３２と、エアフィルタ３９と、フラットパネル３５とを備えている。箱部材３１及び底板部材３２は、空調対象空間ＳＰ１の上方に設置され、室内ファン４３や室内熱交換器４２を収容している。底板部材３２の下面には、空気の吸込口３２ｂが形成されている。エアフィルタ３９は、吸込口３２ｂを通る空気に含まれる塵埃を捕集する。フラットパネル３５は、図４及び図６に示すように、エアフィルタ３９の下方に位置する。平面視において、フラットパネル３５は、エアフィルタ３９よりも大きい。図５に示すように、平面視においてフラットパネル３５の外縁の内側にエアフィルタ３９の外縁が位置するように、フラットパネル３５及びエアフィルタ３９が配置されている。 (4) Features (4-1)
As shown in FIG. 4, the indoor unit 30 of the air conditioner 10 of the present embodiment includes a box member 31 and a bottom plate member 32 that function as a main body casing, an air filter 39, and a flat panel 35. .. The box member 31 and the bottom plate member 32 are installed above the air-conditioning target space SP1 and accommodate the indoor fan 43 and the indoor heat exchanger 42. An air suction port 32b is formed on the lower surface of the bottom plate member 32. The air filter 39 collects dust contained in the air passing through the suction port 32b. The flat panel 35 is located below the air filter 39, as shown in FIGS. 4 and 6. In plan view, the flat panel 35 is larger than the air filter 39. As shown in FIG. 5, the flat panel 35 and the air filter 39 are arranged so that the outer edge of the air filter 39 is located inside the outer edge of the flat panel 35 in a plan view.
　ここでは、平面視においてフラットパネル３５の外縁の内側にエアフィルタ３９の外縁が位置するため、エアフィルタ３９が捕集した塵埃ＤＵ１（図６参照）が落下したときにも、フラットパネル３５によって落下してくる塵埃を受けることができる。 Here, since the outer edge of the air filter 39 is located inside the outer edge of the flat panel 35 in a plan view, the dust DU1 (see FIG. 6) collected by the air filter 39 also falls due to the flat panel 35. You can receive the incoming dust.
　（４－２）
　本実施形態の空気調和装置１０の室内ユニット３０では、フラットパネル３５は、中央部３５ａと、外周部３５ｂとを有している。中央部３５ａは、平面視においてエアフィルタ３９と重なる部分である。外周部３５ｂは、平面視においてエアフィルタ３９と重ならない部分である。フラットパネル３５の中央部３５ａには、上下に貫通する開口が形成されていない。エアフィルタ３９から塵埃が落ちた場合には、フラットパネル３５の中央部３５ａが主として塵埃を受ける。 (4-2)
In the indoor unit 30 of the air conditioner 10 of the present embodiment, the flat panel 35 has a central portion 35a and an outer peripheral portion 35b. The central portion 35a is a portion that overlaps with the air filter 39 in a plan view. The outer peripheral portion 35b is a portion that does not overlap with the air filter 39 in a plan view. The central portion 35a of the flat panel 35 is not formed with an opening that penetrates vertically. When dust falls from the air filter 39, the central portion 35a of the flat panel 35 mainly receives the dust.
　ここでは、少なくともフラットパネル３５の中央部３５ａには開口を設けず、エアフィルタ３９から塵埃が落ちた場合にもフラットパネル３５によって殆どの塵埃を受けることができるように室内ユニット３０が構成されている。これにより、エアフィルタ３９で捕集した塵埃ＤＵ１が空調対象空間ＳＰ１へと落ちていくことが抑制される。 Here, at least the central portion 35a of the flat panel 35 is not provided with an opening, and the indoor unit 30 is configured so that the flat panel 35 can receive most of the dust even when the dust falls from the air filter 39. There is. As a result, the dust DU1 collected by the air filter 39 is suppressed from falling into the air conditioning target space SP1.
　（４－３）
　本実施形態の空気調和装置１０の室内ユニット３０では、エアフィルタ３９の一端３９ｅと、そのエアフィルタ３９の一端３９ｅに近いフラットパネル３５の一端３５ｅとを結ぶ仮想の直線ＩＭＬの傾きを、ある程度大きく設定している。より詳細に言えば、仮想の直線ＩＭＬの鉛直面に対する傾きである第１角度を、５°～６０°の範囲に設定している。　ここでは、第１角度が５°未満ではなく、ある程度の大きさになっているため、エアフィルタ３９から落ちた塵埃が真下ではなく少し斜め下方に落ちた場合にも、その塵埃の大半をフラットパネル３５によって受けることができる。 (4-3)
In the indoor unit 30 of the air conditioner 10 of the present embodiment, the inclination of the virtual straight line IML connecting one end 39e of the air filter 39 and one end 35e of the flat panel 35 close to one end 39e of the air filter 39 is increased to some extent. It is set. More specifically, the first angle, which is the inclination of the virtual straight line IML with respect to the vertical plane, is set in the range of 5 ° to 60 °. Here, since the first angle is not less than 5 ° but has a certain size, even if the dust that has fallen from the air filter 39 falls slightly diagonally downward instead of directly below, most of the dust is flattened. It can be received by the panel 35.
　（５）変形例
　（５－１）変形例１
　上記実施形態の空気調和装置１０の室内ユニット３０では、完全にフラットなフラットパネル３５を採用しているが、これに代えて、壁を備えるパネル１３５（図７参照）を採用してもよい。 (5) Modification example (5-1) Modification example 1
In the indoor unit 30 of the air conditioner 10 of the above embodiment, a completely flat flat panel 35 is adopted, but instead of this, a panel 135 having a wall (see FIG. 7) may be adopted.
　図７に示すパネル１３５は、上述のフラットパネル３５の中央部３５ａに相当する中央部１３５ａ、上述のフラットパネル３５の外周部３５ｂに相当する外周部１３５ｂ、に加えて、壁部１３５ｃを有している。壁部１３５ｃは、外周部１３５ｂから外側且つ斜め上に向かって延びている。 The panel 135 shown in FIG. 7 has a wall portion 135c in addition to a central portion 135a corresponding to the central portion 35a of the flat panel 35 and an outer peripheral portion 135b corresponding to the outer peripheral portion 35b of the flat panel 35 described above. ing. The wall portion 135c extends outward and diagonally upward from the outer peripheral portion 135b.
　このように壁部１３５ｃを設けることで、エアフィルタ３９から落ちてパネル１３５の中央部１３５ａによって受けられた塵埃が横に動いて空調対象空間に落ちてしまうことが抑制される。 By providing the wall portion 135c in this way, it is possible to prevent the dust that falls from the air filter 39 and is received by the central portion 135a of the panel 135 from moving laterally and falling into the air-conditioned space.
　なお、壁部１３５ｃは、外周部１３５ｂから真上に延びていてもよい。また、壁部１３５ｃを、中央部１３５ａの外縁から上に向かって延びるものとして、外周部１３５ｂを無くしてもよい。 The wall portion 135c may extend directly above the outer peripheral portion 135b. Further, the wall portion 135c may be extended upward from the outer edge of the central portion 135a, and the outer peripheral portion 135b may be eliminated.
　（５－２）変形例２
　上記実施形態では、室内ユニット３０を、部屋の空調対象空間ＳＰ１の上方に位置する設置空間ＳＰ２（天井９０の上の空間）に配置している。これに代えて、室内ユニット３０を、天井９０の下の空間である空調対象空間ＳＰ１に配置して、天井９０から室内ユニット３０全体が吊り下がる構造を採ってもよい。このように、天井９０よりも上の空間ではなく、空調対象空間ＳＰ１の上部に室内ユニット３０を配置する場合には、フラットパネル３５の周囲（近傍）に天井９０が存在しないため、フラットパネル３５の平面視における大きさを更に大きくすることができる。 (5-2) Modification 2
In the above embodiment, the indoor unit 30 is arranged in the installation space SP2 (the space above the ceiling 90) located above the air-conditioned space SP1 in the room. Instead of this, the indoor unit 30 may be arranged in the air-conditioned space SP1 which is the space under the ceiling 90, and the entire indoor unit 30 may be suspended from the ceiling 90. As described above, when the indoor unit 30 is arranged above the air-conditioned space SP1 instead of the space above the ceiling 90, the ceiling 90 does not exist around (near) the flat panel 35, so that the flat panel 35 The size of the above in a plan view can be further increased.
　（５－３）
　以上、空気調和装置１０の室内ユニット３０について説明したが、特許請求の範囲に記載された本開示の趣旨及び範囲から逸脱することなく、形態や詳細の多様な変更が可能なことが理解されるであろう。 (5-3)
Although the indoor unit 30 of the air conditioner 10 has been described above, it is understood that various changes in form and details are possible without departing from the purpose and scope of the present disclosure described in the claims. Will.
　　３０　　　室内ユニット（空調ユニット）
　　３１　　　箱部材（本体ケーシング）
　　３１ａ　　吹出口
　　３２　　　底板部材（本体ケーシング）
　　３２ｂ　　吸込口
　　３５　　　フラットパネル（板状部材）
　　３５ａ　　フラットパネルの中央部
　　３５ｂ　　フラットパネルの外周部（非中央部）
　　３５ｅ　　フラットパネルの一端
　　３９　　　エアフィルタ（フィルタ）
　　３９ｅ　　エアフィルタの一端
　　３９Ｍ　　エアフィルタの図心
　　４２　　　室内熱交換器（熱交換器）
　　４３　　　室内ファン（ファン）
　１３５　　　パネル（板状部材）
　１３５ａ　　パネルの中央部
　１３５ｂ　　パネルの外周部（非中央部）
　１３５ｃ　　パネルの壁部（非中央部）
　Ａ１　　　　第１角度
　ＤＵ１　　　塵埃
　ＤＵ２　　　塵埃
　ＩＭＬ　　　仮想の直線（直線）
　ＳＰ１　　　空調対象空間
　ＶＬ　　　　鉛直線
　ＶＰ　　　　鉛直面 30 Indoor unit (air conditioning unit)
31 Box member (main body casing)
31a Outlet 32 Bottom plate member (main body casing)
32b Suction port 35 Flat panel (plate-shaped member)
35a Flat panel center 35b Flat panel outer circumference (non-center)
One end of 35e flat panel 39 Air filter (filter)
One end of 39e air filter Center of gravity of 39M air filter 42 Indoor heat exchanger (heat exchanger)
43 Indoor fan (fan)
135 panel (plate-shaped member)
135a Panel center 135b Panel outer circumference (non-center)
135c panel wall (non-central part)
A1 1st angle DU1 Dust DU2 Dust IML Virtual straight line (straight line)
SP1 Air conditioning target space VL Vertical straight line VP Vertical face
特開２００１－２７４２８号公報Japanese Unexamined Patent Publication No. 2001-27428

Claims (5)

  1. 　空調対象空間（ＳＰ１）の上部又は上方に設置され、ファン（４３）及び熱交換器（４２）を収容し、空気の吸込口（３２ｂ）が下面に形成されている本体ケーシング（３１，３２）と、
    　前記吸込口を通る空気に含まれる塵埃を捕集するフィルタ（３９）と、
    　前記フィルタの下方に位置する板状部材（３５，１３５）と、
    を備え、
    　平面視において、前記板状部材は、前記フィルタよりも大きく、前記板状部材の外縁の内側に前記フィルタの外縁が位置するように、前記板状部材及び前記フィルタが配置されている、
    空調ユニット（３０）。     Main body casings (31, 32) installed above or above the air-conditioned space (SP1), accommodating a fan (43) and a heat exchanger (42), and having an air suction port (32b) formed on the lower surface. When,
    A filter (39) that collects dust contained in the air passing through the suction port and
    Plate-shaped members (35,135) located below the filter
    With
    In a plan view, the plate-shaped member is larger than the filter, and the plate-shaped member and the filter are arranged so that the outer edge of the filter is located inside the outer edge of the plate-shaped member.
    Air conditioning unit (30).
  2. 　前記板状部材は、平面視において前記フィルタと重なる中央部（３５ａ，１３５ａ）と、平面視において前記フィルタと重ならない非中央部（３５ｂ，１３５ｂ，１３５ｃ）とを有し、
    　前記中央部には、上下に貫通する開口が形成されておらず、前記フィルタから塵埃（ＤＵ２）が落ちた場合には前記中央部が前記塵埃を受ける、
    請求項１に記載の空調ユニット。     The plate-shaped member has a central portion (35a, 135a) that overlaps with the filter in a plan view and a non-central portion (35b, 135b, 135c) that does not overlap with the filter in a plan view.
    An opening penetrating vertically is not formed in the central portion, and when dust (DU2) falls from the filter, the central portion receives the dust.
    The air conditioning unit according to claim 1.
  3. 　前記板状部材（１３５）は、前記中央部の外縁あるいは前記非中央部から上に向かって延びる壁部（１３５ｃ）、をさらに有する、
    請求項２に記載の空調ユニット。     The plate-shaped member (135) further has a wall portion (135c) extending upward from the outer edge of the central portion or the non-central portion.
    The air conditioning unit according to claim 2.
  4. 　平面視における前記フィルタの図心（３９Ｍ）を含む任意の鉛直面（ＶＰ）で切断した、縦断面視における前記フィルタの一端（３９ｅ）と、前記フィルタの一端に近い前記縦断面視における前記板状部材の一端（３５ｅ）とを結ぶ直線（ＩＭＬ）は、前記縦断面視において前記フィルタの一端を通る鉛直線（ＶＬ）と、第１角度（Ａ１）を為し、
    　前記第１角度（Ａ１）は、５°～６０°である、
    請求項１から３のいずれかに記載の空調ユニット。     One end (39e) of the filter in a longitudinal view, cut at any vertical plane (VP) including the centroid (39M) of the filter in a plan view, and the plate in the longitudinal view close to one end of the filter. The straight line (IML) connecting one end (35e) of the shaped member forms a first angle (A1) with the vertical straight line (VL) passing through one end of the filter in the vertical cross-sectional view.
    The first angle (A1) is 5 ° to 60 °.
    The air conditioning unit according to any one of claims 1 to 3.
  5. 　前記本体ケーシングの側面に、空気の吹出口（３１ａ）が形成されている、
    請求項１から４のいずれかに記載の空調ユニット。     An air outlet (31a) is formed on the side surface of the main body casing.
    The air conditioning unit according to any one of claims 1 to 4.
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