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EP3961111B1 - Deckeneingebaute inneneinheit und klimaanlage - Google Patents

Deckeneingebaute inneneinheit und klimaanlage

Info

Publication number
EP3961111B1
EP3961111B1 EP20823586.1A EP20823586A EP3961111B1 EP 3961111 B1 EP3961111 B1 EP 3961111B1 EP 20823586 A EP20823586 A EP 20823586A EP 3961111 B1 EP3961111 B1 EP 3961111B1
Authority
EP
European Patent Office
Prior art keywords
casing
air
ceiling
indoor
intake port
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20823586.1A
Other languages
English (en)
French (fr)
Other versions
EP3961111A1 (de
EP3961111A4 (de
Inventor
Mami Iwasaki
Yoshiteru Nouchi
Yasunobu Okumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP3961111A1 publication Critical patent/EP3961111A1/de
Publication of EP3961111A4 publication Critical patent/EP3961111A4/de
Application granted granted Critical
Publication of EP3961111B1 publication Critical patent/EP3961111B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F24F1/00075—Indoor units, e.g. fan coil units receiving air from a central station
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F24F3/06—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 arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065—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 arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers

Definitions

  • the present invention relates to an indoor unit and an air-conditioning device.
  • An air-conditioning device including an indoor unit embeddable in a ceiling is known.
  • the indoor unit of JP 2010 164294 A houses a heat exchanger and a fan inside a casing installed in a ceiling space. On a lower surface of the casing, a blow-out port that supplies air that has passed through the heat exchanger to an indoor space is formed.
  • the indoor unit has a casing with a fan and two groups of heat exchangers, a water receiving tray under each group of heat exchangers, and two air return openings in the side wall of the casing for returning air from different rooms.
  • the bottom part of the casing has an air outlet.
  • the air outlet has two groups of air valves. Each group of air valves adjusts the exhaust angle for each room.
  • Each group of heat exchangers corresponds to one air return port.
  • An object of the present invention is to reduce the area of the panel of the indoor unit.
  • the panel (50) can extend along the ceiling (C), the opening area of the blow-out port (51, 52) with respect to the panel (50) is relatively large, and the intake port (46, 47) can be secured in each side plate (41, 42) on both sides of the casing body (40a) without forming the intake port (46, 47) in the top plate of the casing body (40a).
  • Standard plate mentioned here means a plate forming the right, left, front, and rear surfaces, and does not include a plate forming the upper and lower surfaces.
  • An air-conditioning device (10) of the embodiment adjusts the temperature of air in an air conditioning target space (5).
  • the air-conditioning device (10) is applied to buildings and the like.
  • the air conditioning target space (5) is an indoor space.
  • the air-conditioning device (10) includes an outdoor unit (20) and at least one indoor unit (30).
  • the air-conditioning device (10) in this example is configured as a so-called multi-type device including a plurality of indoor units (30).
  • the indoor unit (30) is a ceiling-embedded unit.
  • the outdoor unit (20) is installed outdoors.
  • the indoor unit (30) and the outdoor unit (20) are connected to each other via a gas connection pipe (12) and a liquid connection pipe (13).
  • the air-conditioning device (10) includes a refrigerant circuit (11).
  • the refrigerant circuit (11) is filled with a refrigerant.
  • the refrigerant circuit (11) executes a refrigeration cycle by circulation of the refrigerant.
  • the outdoor unit (20) includes an outdoor circuit (21) and an outdoor fan (22).
  • Each indoor unit (30) includes an indoor circuit (31) and an indoor fan (32).
  • the refrigerant circuit (11) includes the outdoor circuit (21), the indoor circuit (31), and the connection pipe (12, 13) connecting the outdoor circuit (21) and the indoor circuit (31) to each other.
  • the outdoor circuit (21) includes a compressor (23), an outdoor heat exchanger (24), an outdoor expansion valve (25), and a four-way switching valve (26).
  • the compressor (23) compresses the refrigerant and discharges the compressed refrigerant.
  • the outdoor heat exchanger (24) exchanges heat between the outdoor air carried by the outdoor fan (22) and the refrigerant.
  • the outdoor heat exchanger (24) is of a fin and tube type.
  • the outdoor expansion valve (25) is a decompression mechanism for decompressing the refrigerant.
  • the outdoor expansion valve (25) is, for example, an electronic expansion valve.
  • the four-way switching valve (26) is a flow path switching mechanism for switching between a first refrigeration cycle (cooling cycle) and a second refrigeration cycle (heating cycle).
  • the four-way switching valve (26) switches between a first state (state shown by the solid line in FIG. 1 ) and a second state (state shown by the broken line in FIG. 1 ).
  • Each indoor circuit (31) includes an indoor heat exchanger (33) and an indoor expansion valve (34).
  • the indoor heat exchanger (33) exchanges heat between the indoor air carried by the indoor fan and the refrigerant.
  • the indoor heat exchanger (33) is of a fin and tube type.
  • the indoor expansion valve (34) is a decompression mechanism for decompressing the refrigerant.
  • the indoor expansion valve (34) is, for example, an electronic expansion valve.
  • the four-way switching valve (26) is in the first state, and the first refrigeration cycle is executed.
  • the refrigerant compressed by the compressor (23) dissipates heat in the outdoor heat exchanger (24), is decompressed by the indoor expansion valve (34), and evaporates in the indoor heat exchanger (33).
  • the four-way switching valve (26) is in the second state, and the second refrigeration cycle is executed.
  • the refrigerant compressed by the compressor (23) dissipates heat in the indoor heat exchanger (33), is decompressed by the outdoor expansion valve (25), and evaporates in the outdoor heat exchanger (24).
  • the indoor unit (30) applies to a system ceiling (C).
  • the system ceiling (C) is of a so-called line type.
  • the system ceiling (C) includes a plurality of bars (B1, B2) arranged in a grid pattern, and ceiling walls (W) fitted between the bars (B1, B2).
  • the plurality of bars (B1, B2) includes a plurality of first bars (B1) and a plurality of second bars (B2).
  • the first bar (B1) extends in the front-rear direction.
  • the plurality of first bars (B1) is arranged parallel to each other in the right-left direction.
  • the second bar (B2) extends in the right-left direction.
  • the plurality of second bars (B2) is arranged parallel to each other in the front-rear direction.
  • the first bar (B1) and the second bar (B2) are orthogonal to each other.
  • the plurality of first bars (B1) and the plurality of second bars (B2) form grid structure.
  • the first bar (B1) is formed to have an inverted T-shaped longitudinal cross section. In other words, at the lower end of the first bar (B1), protrusions (7) protruding on both sides of the width direction are formed.
  • the system ceiling (C) includes hanging bolts and fixing brackets (not shown).
  • the hanging bolts are fixed to a slab above the system ceiling.
  • the first bar (B1) and the second bar (B2) are supported by the lower end of the hanging bolts via the fixing brackets.
  • a first opening (O1) and a second opening (O2) are formed between the plurality of first bars (B1) and the plurality of second bars (B2).
  • the right-left width of the first opening (O1) is smaller than the right-left width of the second opening.
  • the plurality of first bars (B1) includes a plurality of pairs of first bars (B1) (line bars (LB)) at relatively narrow intervals from each other.
  • the first opening (O1) is formed between the pair of first bars (B1).
  • the ceiling wall (W) is fitted into each second opening (O2).
  • the ceiling wall (W) is fitted into each first opening (O1).
  • the ceiling wall (W) is installed on the upper surface of the protrusion (7) of each of the first bar (B1) and the second bar (B2).
  • a ceiling space (6) is formed on the back side (upper side) of the ceiling wall (W) of the system ceiling (C).
  • the indoor space (5) is formed on the front side (lower side) of the ceiling wall (W) of the system ceiling.
  • Illumination devices (8) are fitted in some first openings (O1) of the plurality of first openings (O1) (see FIG. 3 ).
  • the illumination device (8) is installed on the upper surface of the protrusion (7) of each of the first bar (B1) and the second bar (B2).
  • the illumination device (8) is formed in a substantially rectangular shape extending along one pair of line bars (LB).
  • a casing (40) of the indoor unit (30) (strictly speaking, casing body (40a)) is fitted in some first openings (O1) of the plurality of first openings (O1).
  • the casing body (40a) is installed on the upper surface of the protrusion (7) of each of the first bar (B 1) and the second bar (B2).
  • the casing body (40a) extends along one pair of line bars (LB).
  • the illumination device (8) and the indoor unit (30) are linearly arranged in the longitudinal direction. This gives a streamlined impression to the appearance of the ceiling surface.
  • the indoor unit (30) will be described with reference to FIGS. 2 to 5 .
  • the indoor unit (30) is installed in the first opening (O1) of the system ceiling (C).
  • the indoor unit (30) includes the casing (40), the indoor fan (32), the indoor heat exchanger (33), drain pans (35, 36), flow path forming member (60), and filters (71, 72).
  • the casing (40) includes the casing body (40a) with an open lower side and a ceiling panel (50) provided in the lower open portion of the casing body (40a).
  • An air passage (P) through which air flows is formed inside the casing (40).
  • the casing (40) is formed long sideways extending along the system ceiling (C).
  • the casing body (40a) is disposed in the ceiling space (6).
  • the ceiling panel (50) is exposed to the indoor space (5) so as to form the ceiling surface.
  • the casing body (40a) is formed in a hollow box shape having a long side extending along the ceiling and a short side shorter than the long side. Specifically, the casing body (40a) is formed in an elongated rectangular shape extending in the longitudinal direction of the first bar (B 1).
  • the casing body (40a) includes four side plates (41, 42, 43, 44) and one top plate (45).
  • the top plate (45) is located on the upper side of the casing (40).
  • the four side plates include the first side plate (41), the second side plate (42), the third side plate (43), and the fourth side plate (44).
  • the first side plate (41) is located on the left side of the casing (40).
  • the second side plate (42) is located on the right side of the casing (40).
  • the third side plate (43) is located on the front side of the casing (40).
  • the fourth side plate (44) is located on the rear side of the casing (40).
  • the first side plate (41) and the second side plate (42) are side plates along the long side of the casing (40).
  • the first side plate (41) and the second side plate (42) face each other.
  • the first side plate (41) and the second side plate (42) extend in the longitudinal direction of the first bar (B 1) to go along the first bar (B 1).
  • the third side plate (43) and the fourth side plate (44) are side plates along the short side of the casing (40).
  • the third side plate (43) and the fourth side plate (44) extend in the longitudinal direction of the
  • a first intake port (46) and a second intake port (47) are formed in the casing body (40a).
  • the indoor air of the indoor space (5) is taken in the first intake port (46) and the second intake port (47) through a vent hole (9) described in detail later and the ceiling space (6).
  • the first intake port (46) is formed in the first side plate (41).
  • the first intake port (46) is formed in a rectangular shape along the outer edge of the first side plate (41).
  • the first intake port (46) extends from near the upper end to near the lower end of the first side plate (41).
  • the first intake port (46) extends from near the front end to near the rear end of the first side plate (41) in the longitudinal direction of the casing (40).
  • the second intake port (47) is formed in the second side plate (42).
  • the second intake port (47) is formed in a rectangular shape along the outer edge of the second side plate (42).
  • the second intake port (47) extends from near the upper end to near the lower end of the second side plate (42).
  • the second intake port (47) extends from near the front end to near the rear end of the second side plate (42) in the longitudinal direction of the casing (40).
  • the ceiling panel (50) constitutes the lower surface of the casing (40).
  • the ceiling panel (50) is exposed to the indoor space (5).
  • the ceiling panel (50) is formed in an elongated rectangular shape.
  • the ceiling panel (50) extends in a direction along the line bar (LB).
  • a first blow-out port (51) and a second blow-out port (52) are formed in the ceiling panel (50).
  • the first blow-out port (51) and the second blow-out port (52) supply air in the casing (40) into the room.
  • the first blow-out port (51) and the second blow-out port (52) extend in the longitudinal direction of the ceiling panel (50).
  • the first blow-out port (51) and the second blow-out port (52) are disposed parallel and adjacent to each other.
  • the first blow-out port (51) and the second blow-out port (52) are each provided with a wind direction adjustment plate (53).
  • the wind direction adjustment plate (53) extends along each blow-out port (51, 52) in the longitudinal direction of the blow-out port (51, 52).
  • the angle of each wind direction adjustment plate (53) is adjusted by a motor (not shown).
  • the angle of the wind direction adjustment plate (53) is adjusted between positions of closing and opening the blow-out port (51, 52).
  • the wind direction adjustment plate (53) adjusts the direction of airflow blown out from the blow-out port (51, 52).
  • a first slit (54) and a second slit (55) are formed in the ceiling panel (50).
  • the first slit (54) is formed between the left edge of the ceiling panel (50) and the first slit (54).
  • the second slit (55) is formed between the right edge of the ceiling panel (50) and the second slit (55).
  • the first slit (54) and the second slit (55) extend in the longitudinal direction of the ceiling panel (50).
  • a pull-out part (71b, 72b) of the corresponding filter (71, 72) is fitted into the first slit (54) and the second slit (55).
  • the indoor fan (32) is a fan that carries air.
  • the indoor fan (32) of this example includes a cross-flow fan (also called a transverse fan).
  • the indoor fan (32) is disposed in the middle of the width direction (right-left direction) of the casing (40).
  • the indoor fan (32) is disposed in the middle of the height direction of the casing (40).
  • the indoor fan (32) extends in the longitudinal direction of the casing (40). In other words, the axis of rotation of the indoor fan (32) extends in the longitudinal direction of the casing (40) or the line bar (LB). Since the cross-flow fan (32) has an elongated shape, the dead volume is reduced even if the casing (40) is elongated.
  • the outdoor heat exchanger (24) is disposed inside the casing (40).
  • the outdoor heat exchanger (24) includes a first heat exchange unit (33A) and a second heat exchange unit (33B).
  • the first heat exchange unit (33A) is disposed near the first side plate (41).
  • the first heat exchange unit (33A) is disposed at a position corresponding to the first intake port (46).
  • the second heat exchange unit (33B) is disposed near the second side plate (42).
  • the second heat exchange unit (33B) is disposed at a position corresponding to the second intake port (47).
  • the first heat exchange unit (33A) and the second heat exchange unit (33B) include a large number of fins (F) and heat transfer tubes (not shown) penetrating each fin (F).
  • the large number of fins (F) are arranged in the longitudinal direction of the casing (40) or the indoor fan (32).
  • the first heat exchange unit (33A) and the second heat exchange unit (33B) are slightly inclined from the vertical direction. Specifically, the first heat exchange unit (33A) is inclined such that the upper part thereof is near the middle of the width direction of the casing (40).
  • the second heat exchange unit (33B) is inclined such that the upper part thereof is near the middle of the width direction of the casing (40).
  • the first heat exchange unit (33A) and the second heat exchange unit (33B) are disposed with an inclination at an interval widening downward from each other. This forms a space at a relatively wide interval in the width direction between the lower part of the first heat exchange unit (33A) and the lower part of the second heat exchange unit (33B).
  • the indoor fan (32) is disposed in this space.
  • the first drain pan (35) and the second drain pan (36) are disposed inside the casing (40).
  • the first drain pan (35) is disposed below the first heat exchange unit (33A).
  • the first drain pan (35) is a tray that receives condensed water generated around the first heat exchange unit (33A).
  • the second drain pan (36) is a tray that receives condensed water generated around the second heat exchange unit (33B).
  • the first drain pan (35) extends in the longitudinal direction of the casing (40) to go along the first side plate (41).
  • the second drain pan (36) extends in the longitudinal direction of the casing (40) to go along the second side plate (42).
  • the flow path forming member (60) is disposed below the indoor fan (32).
  • the flow path forming member (60) forms a main flow path (61) that covers the lower part of the indoor fan (32) and two branch flow paths (62,63) that branch right and left from the lower part of the main passage (61).
  • the flow path forming member (60) extends in the longitudinal direction of the casing (40).
  • the two branch flow paths (62,63) include the first branch flow path (62) connected to the first blow-out port (51) and the second branch flow path (63) connected to the second blow-out port (52).
  • the first filter (71) and the second filter (72) are disposed inside the casing (40). Each filter (71, 72) is formed in a plate shape or a sheet shape. The first filter (71) and the second filter (72) are disposed upstream of the indoor heat exchanger (33) in the air passage (P). The first filter (71) and the second filter (72) collect dust in the air.
  • the first filter (71) is disposed behind the first intake port (46) so as to cover the first intake port (46).
  • the first filter (71) extends up and down from the top plate (45) to the ceiling panel (50).
  • the first filter (71) is attached to the casing (40) in a state of standing up and down.
  • the first filter (71) includes a first filter body (71a) that covers the first intake port (46) and the first pull-out part (71b) connected to the lower end of the first filter body (71a). With the first filter (71) attached, the first pull-out part (71b) protrudes downward from the first slit (54).
  • the first pull-out part (71b) is provided with a handle (73) for a worker or user to pull out the first filter (71).
  • the second filter (72) is disposed behind the second intake port (47) so as to cover the second intake port (47).
  • the second filter (72) extends up and down from the top plate (45) to the ceiling panel (50).
  • the second filter (72) is attached to the casing (40) in a state of standing up and down.
  • the second filter (72) includes a second filter body (72a) that covers the second intake port (47) and the second pull-out part (72b) connected to the lower end of the second filter body (72a). With the second filter (72) attached, the second pull-out part (72b) protrudes downward from the second slit (55).
  • the second pull-out part (72b) is provided with a handle (73) for a worker or user to pull out the second filter (72).
  • the system ceiling (C) is provided with the vent hole (9) that causes the indoor space (5) to communicate with the ceiling space (6).
  • the intake port (46, 47) of the indoor unit (30) communicates with the indoor space (5) via the vent hole (9) and the ceiling space (6).
  • the intake port (46, 47) is configured to substantially take in the indoor air of the indoor space (5).
  • the operation of the air-conditioning device (10) will be described.
  • the air-conditioning device (10) switches between a cooling operation and a heating operation.
  • the outdoor fan (22), the indoor fan (32), and the compressor (23) are operated. Accordingly, the first refrigeration cycle described above is executed.
  • the indoor fan (32) is in operation, the indoor air of the indoor space (5) is taken in from the vent hole (9) to the ceiling space (6).
  • the air in the ceiling space (6) is taken in from the first intake port (46) and the second intake port (47) to the air passage (P) in the casing (40).
  • the air taken in from the first intake port (46) passes through the first filter (71).
  • the first filter (71) collects dust in the air.
  • the air that has passed through the first filter (71) is cooled by the first heat exchange unit (33A).
  • the air taken in from the second intake port (47) passes through the second filter (72).
  • the second filter (72) collects dust in the air.
  • the air that has passed through the second filter (72) is cooled by the second heat exchange unit (33B).
  • the air cooled by the indoor heat exchanger (33) flows through the main passage (61) and is divided into the first branch flow path (62) and the second branch flow path (63).
  • the air in the first branch flow path (62) is supplied from the first blow-out port (51) to the indoor space (5).
  • the air in the second branch flow path (63) is supplied from the second blow-out port (52) to the indoor space (5).
  • the heating operation is basically the same as the cooling operation except that the air is heated by the indoor heat exchanger (33).
  • each of the blow-out port (51, 52), the indoor fan (32), and the indoor heat exchanger (33) overlaps each other in the up-and-down direction.
  • the upper part of the first heat exchange unit (33A), the left part of the indoor fan (32), and the first blow-out port (51) overlap each other in the up-and-down direction.
  • the upper part of the second heat exchange unit (33B), the right part of the indoor fan (32), and the second intake port (47) overlap each other in the up-and-down direction.
  • the size of the casing (40) can be reduced horizontally. This can reduce the area of the ceiling panel (50) exposed to the indoor space (5).
  • the intake port (46, 47) is not formed in the ceiling panel (50) in this example. Therefore, the area of the ceiling panel (50) can be made smaller than the ceiling panel (50) in which the intake port is formed.
  • the casing (40) has a long front-rear length and a narrow right-left width. Therefore, as shown in FIG. 3 , the indoor unit (30) can be arranged together with the illumination device (8) between one pair of line bars (LB). This allows the indoor unit (30) and the illumination device (8) to be linearly arranged in the longitudinal direction thereof. This allows formation of a ceiling surface with a streamlined impression.
  • the aspect ratio A of the ceiling panel (50) is L2/L1.
  • the aspect ratio A is preferably 1.25 or more, more preferably 3.0 or more, and even more preferably 4.0 or more.
  • the total opening area S2 in this example is the sum of the opening area of the first blow-out port (51) and the opening area of the second blow-out port (52).
  • the total opening area S2 is preferably 20% or more of the total area S1. Setting the total opening area to 20% or more makes it possible to secure a sufficient flow rate of blow-out air.
  • a person in the room such as a worker or a user performs the work of removing and installing the filter (71, 72) from and into the indoor space (5).
  • the person in the room grabs the handle (73) of the pull-out part (71b, 72b) of the filter (71,72) and pulls the pull-out part (71b, 72b) downward. Then, the filter (71, 72) moves downward through the slit (54, 55) (see FIG. 7 ). This allows the filter (71, 72) to be taken out of the casing (40) without removing the ceiling panel (50) from the casing body (40a).
  • the person in the room grabs the handle (73) of the pull-out part (71b, 72) and inserts the upper end of the filter (71, 72) into the slit (54, 55). In this state, the filter (71, 72) is pushed upward. This allows the filter (71, 72) to be attached to the inside of the casing (40) without removing the ceiling panel (50) from the casing body (40a).
  • the embodiment is the ceiling-embedded indoor unit (30) for the air-conditioning device (10) including the casing (40), and the indoor fan (32) and the indoor heat exchanger (33) disposed inside the casing (40).
  • the casing (40) includes the casing body (40a) disposed in the ceiling space (6) of the system ceiling (C) with the open lower side, and the panel (50) provided in the lower open portion of the casing body (40a) and exposed to the air conditioning target space (5).
  • the blow-out port (51, 52) that supplies air to the indoor space (5) is formed.
  • the intake port (46, 47) in which the air of the indoor space (5) is taken is formed. At least a part of each of the blow-out port (51, 52), the indoor fan (32), and the indoor heat exchanger (33) overlaps each other in the up-and-down direction.
  • each of the blow-out port (51,52), the indoor fan, and the indoor heat exchanger (33) overlaps each other in the up-and-down direction, making it possible to reduce the size of the casing (40) horizontally. This can also reduce the area of the ceiling panel (50) facing the indoor space (5).
  • the intake port (46, 47) is not formed in the ceiling panel (50), and the intake port (46, 47) is formed in the casing body (40a). This can reduce the area of the ceiling panel (50) more than the configuration of forming the intake port (46, 47) in the ceiling panel (50). In addition, the so-called short circuit, in which the air blown out from the blow-out port (51, 52) is immediately taken in the intake port (46, 47), can be avoided.
  • the casing (40) has a long side extending in the direction along the system ceiling (C) and a short side shorter than the long side.
  • the casing (40) is formed in a rectangular shape extending along the system ceiling (C), the casing (40) can be adopted for the line-type system ceiling (C).
  • the illumination device (8) and the indoor unit (30) are installed between one pair of elongated line bars (LB), and are arranged in a straight line (see FIG. 3 ). This gives a streamlined impression to the ceiling surface and can improve the comfort of the person in the room.
  • the total opening area S2 is 20% or more of the total area S1.
  • This embodiment can secure the total opening area S2 of the blow-out port (51, 52) relatively large while reducing the area of the ceiling panel (50). This embodiment can secure a sufficient flow rate of the blow-out air, and reduce the pressure loss of the blow-out air. Since there is no intake port in the ceiling panel (50), even if the opening area of the blow-out port (51, 52) is increased in this way, the so-called short circuit is not generated.
  • the intake port (46, 47) is formed in at least one side plate (41, 42) of the casing body (40a).
  • This embodiment can secure a sufficient area of the intake port (46, 47) by forming the intake port (46, 47) in the side plate (41, 42) having a relatively large area. If the intake port (46, 47) is formed on the upper surface of the casing body (40a), there is a possibility that the air cannot be taken in sufficiently under the constraint of height of the ceiling space (6) (such as slab). The present embodiment is not subjected to such a constraint.
  • the intake port (46, 47) is formed in each of the two side plates (41, 42) of the casing body (40a) facing each other.
  • This embodiment can further increase the area of the intake port (46, 47).
  • the indoor heat exchanger (33) includes the first heat exchange unit (33A) disposed near the first side plate (41) of the casing body (40a), and the second heat exchange unit (33B) disposed near the second side plate (42) facing the first side plate (41) of the casing body (40a).
  • the first heat exchange unit (33A) and the second heat exchange unit (33B) are each disposed with an inclination at an interval widening downward from each other.
  • This embodiment can cause the air taken in from the intake port (46,47) of the first side plate (41) to pass through the first heat exchange unit (33A), and can cause the air taken in from the intake port (46,47) of the second side plate (42) to pass through the second heat exchange unit (33B). Since the first heat exchange unit (33A) and the second heat exchange unit (33B) are inclined with respect to the vertical direction, the heat transfer area of each heat exchange unit (33A, 33B) can be increased. In addition, the casing (40) can be made smaller in the horizontal direction than when each heat exchange unit (33A, 33B) is placed horizontally.
  • the indoor fan (32) is a cross-flow fan extending in the longitudinal direction of the casing (40).
  • the casing (40) which is elongated horizontally, can be adapted to the line-type system ceiling (C).
  • the casing (40) has a long side extending along the system ceiling (C) and a short side shorter than the many years.
  • the casing body (40a) includes the first side plate (41) along the long side of the casing body (40a) and the second side plate (42) facing the first side plate (41).
  • the intake port (46, 47) is formed in each of the first side plate (41) and the second side plate (42).
  • the indoor heat exchanger (33) includes the first heat exchange unit (33A) disposed near the first side plate (41) of the casing body (40a), and the second heat exchange unit (33B) disposed near the second side plate (42) facing the first side plate (41) of the casing body (40a).
  • the first heat exchange unit (33A) and the second heat exchange unit (33B) are each disposed with an inclination at an interval widening downward from each other.
  • the indoor fan (32) is a cross-flow fan extending in the longitudinal direction of the casing (40).
  • the cross-flow fan (32) is disposed between the lower part of the first heat exchange unit (33A) and the lower part of the second heat exchange unit (33B).
  • the horizontally long indoor fan (32) can be disposed in the space between the lower parts of the first heat exchange unit (33A) and the second heat exchange unit (33B). This can reduce the dead space inside the casing (40). By disposing the indoor fan (32) in this space, the height of the casing (40) can also be reduced.
  • the embodiment includes the filter (71, 72) that collects dust in the air taken in the intake port (46, 47).
  • the slit (54, 55) is formed to pull the filter (71, 72) out of the casing (40).
  • This embodiment allows the work of inserting and removing the filter (71, 72) into and from the indoor space (5) to be easily executed without removing the ceiling panel (50) from the casing body (40a).
  • An air-conditioning device (10) of the first modification shown in FIG. 8 includes a first duct (D1) and a second duct (D2).
  • a system ceiling (C) is provided with a first vent hole (9a) and a second vent hole (9b).
  • the inflow end of the first duct (D1) is connected to the first vent hole (9a).
  • the outflow end of the first duct (D1) is connected to the first intake port (46).
  • the inflow end of the second duct (D2) is connected to the second vent hole (9b), and the outflow end of the second duct (D2) is connected to the second intake port (47).
  • the basic configuration of an indoor unit (30) is similar to the configuration of the embodiment described above.
  • the indoor air of indoor space (5) is taken into the first duct (D1) via the first intake port (46).
  • the air in the first duct (D1) flows from the first intake port (46) into an air passage (P) of the indoor unit (30).
  • the air in the second duct (D2) flows from the second intake port (47) into the air passage (P) of the indoor unit (30).
  • the air in the air passage (P) is cooled or heated by an indoor heat exchanger (33) and then supplied from a blow-out port (51, 52) to the indoor space (5).
  • an indoor fan (32), an indoor heat exchanger (33), and a blow-out port (51,52) are disposed to overlap each other in the up-and-down direction.
  • the indoor fan (32) of the second modification is a sirocco fan.
  • the indoor heat exchanger (33) is of a horizontal type with the longitudinal direction of the fin in the horizontal direction.
  • the air-conditioning device (10) may be of a so-called pair type including one outdoor unit (20) and one indoor unit (30).
  • the indoor unit (30) may take in outdoor air into the intake port (46, 47) and adjust the temperature of the taken air to supply the air to the air conditioning target space (indoor space (5)).
  • the indoor unit (30) may take in the outdoor air directly into the intake port (46, 47) through a duct, or take in the outdoor air indirectly into the intake port (46, 47) via the ceiling space (6).
  • the indoor unit (30) does not necessarily have to be applied to the line-type ceiling panel (50).
  • the present invention is useful for the indoor unit and the air-conditioning device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Claims (5)

  1. Inneneinheit, die in eine Decke (C) für eine Klimaanlage einbaubar ist, wobei die Inneneinheit ein Gehäuse (40) umfasst, wobei das Gehäuse (40) Folgendes einschließt:
    einen Gehäusekörper (40a) zum Anordnen in einem Rückseitenraum (6) der Decke (C) und der eine offene untere Seite aufweist; und
    eine lange Seite, die sich entlang der Decke (C) erstreckt, und eine kurze Seite, die kürzer ist als die lange Seite;
    wobei der Gehäusekörper (40a) eine erste Seitenplatte (41) und eine zweite Seitenplatte (42) einschließt, die Seitenplatten entlang der langen Seite des Gehäuses (40) sind, die zu einander zeigen;
    wobei ein erster Einlassanschluss (46), in dem Luft aufgenommen wird, in der ersten Seitenplatte (41) gebildet ist und sich in einer Längsrichtung des Gehäuses (40) erstreckt;
    wobei ein zweiter Einlassanschluss (47), in dem Luft aufgenommen wird, in der zweiten Seitenplatte (42) gebildet ist und sich in der Längsrichtung des Gehäuses (40) erstreckt;
    ein Paneel (50), das an einem unteren offenen Abschnitt des Gehäusekörpers (40a) bereitgestellt ist und einem Klimatisierungszielbereich (5) exponiert werden soll,
    einen Ausblasanschluss (51, 52), der so konfiguriert ist, dass er Luft an den Klimatisierungszielbereich (5) liefert, der in dem Paneel (50) gebildet ist,
    wobei die Inneneinheit weiter ein Gebläse (32) und einen Wärmetauscher (33) umfasst, die innerhalb des Gehäuses (40) angeordnet sind,
    wobei mindestens ein Teil von jedem des Ausblasanschlusses (51, 52), des Gebläses (32) und des Wärmetauschers (33) sich gegenseitig in einer Richtung von oben nach unten überlappen,
    wobei der Wärmetauscher (33) eine erste Wärmetauscheinheit (33A) einschließt, die an einer Position angeordnet ist, die dem ersten Einlassanschluss (46) entspricht, und eine zweite Wärmetauscheinheit (33B), die an einer Position angeordnet ist, die dem zweiten Einlassanschluss (47) entspricht; und
    wobei, wenn eine Gesamtfläche, die den Ausblasanschluss (51,52) an einer unteren Oberfläche des Paneels (50) einschließt, S1 ist und eine Gesamtöffnungsfläche des Ausblasanschlusses (51,52) S2 ist, die Gesamtöffnungsfläche S2 20 % oder mehr der Gesamtfläche S1 ist.
  2. Inneneinheit nach Anspruch 1, wobei das Gebläse (32) ein Querstromgebläse ist, das sich in der Längsrichtung des Gehäuses (40) erstreckt.
  3. Inneneinheit nach einem der vorstehenden Ansprüche, wobei die erste Wärmetauscheinheit (33A) und die zweite Wärmetauscheinheit (33B) jeweils mit einer Neigung in einem sich nach unten verbreitenden Abstand voneinander angeordnet sind.
  4. Deckeneingebaute Inneneinheit nach einem der vorstehenden Ansprüche, weiter umfassend einen Filter (71, 72), der so konfiguriert ist, dass er Staub in der in den Einlassanschluss (46, 47) aufgenommenen Luft sammelt, wobei ein Schlitz (54, 55), durch den der Filter (71, 72) aus dem Gehäuse (40) herausgezogen wird, in dem Paneel (50) gebildet ist.
  5. Klimaanlage, umfassend:
    eine Außeneinheit (20); und
    die deckeneingebaute Inneneinheit (30) nach einem der vorstehenden Ansprüche.
EP20823586.1A 2019-06-14 2020-04-13 Deckeneingebaute inneneinheit und klimaanlage Active EP3961111B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019111447A JP7348481B2 (ja) 2019-06-14 2019-06-14 天井埋込型の室内機、及び空気調和装置
PCT/JP2020/016327 WO2020250563A1 (ja) 2019-06-14 2020-04-13 天井埋込型の室内機、及び空気調和装置

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EP3961111A1 EP3961111A1 (de) 2022-03-02
EP3961111A4 EP3961111A4 (de) 2022-06-29
EP3961111B1 true EP3961111B1 (de) 2025-12-03

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JP7560719B2 (ja) * 2020-07-22 2024-10-03 ダイキン工業株式会社 吹出ユニット、及び、空気調和装置
WO2025209281A1 (zh) * 2024-04-01 2025-10-09 合肥美的暖通设备有限公司 空调

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JP4527306B2 (ja) * 2001-03-16 2010-08-18 三菱電機株式会社 天井埋込形空気調和機
JP2006194555A (ja) * 2005-01-17 2006-07-27 Matsushita Electric Ind Co Ltd 空気調和機
JP4039453B1 (ja) 2005-12-12 2008-01-30 ダイキン工業株式会社 空気調和装置
CN102563758B (zh) 2007-03-14 2015-03-25 三菱电机株式会社 空气调节器
EP2378217A4 (de) 2008-12-15 2018-05-02 Daikin Industries, Ltd. In der decke eingebettete klimaanlageninnenraumeinheit
CN102748814A (zh) * 2012-07-14 2012-10-24 李力游 一种嵌入式空调器室内机
CN105928067B (zh) * 2016-05-04 2018-12-21 奥克斯空调股份有限公司 一种挂式空调室内机
CN106287968A (zh) * 2016-08-30 2017-01-04 宁波奥克斯电气股份有限公司 侧回下送式多空间空调室内机

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WO2020250563A1 (ja) 2020-12-17
AU2020290178B2 (en) 2022-12-15
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AU2020290178A1 (en) 2021-12-16
JP2020204421A (ja) 2020-12-24
EP3961111A4 (de) 2022-06-29

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