WO2024154172A1 - 空気調和機 - Google Patents

空気調和機 Download PDF

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Publication number
WO2024154172A1
WO2024154172A1 PCT/JP2023/000908 JP2023000908W WO2024154172A1 WO 2024154172 A1 WO2024154172 A1 WO 2024154172A1 JP 2023000908 W JP2023000908 W JP 2023000908W WO 2024154172 A1 WO2024154172 A1 WO 2024154172A1
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WO
WIPO (PCT)
Prior art keywords
top plate
base
ventilation
air conditioner
heat exchanger
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.)
Ceased
Application number
PCT/JP2023/000908
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
周平 横田
洋平 小柳
信洋 進
明寛 中花
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2023/000908 priority Critical patent/WO2024154172A1/ja
Priority to JP2024571434A priority patent/JP7802212B2/ja
Publication of WO2024154172A1 publication Critical patent/WO2024154172A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F24F1/0041—Indoor units, e.g. fan coil units characterised by exhaustion of inside air from 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
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/20—Sunlight

Definitions

  • This disclosure relates to air conditioners.
  • the ventilation fan of the ventilation device outdoors.
  • a structure is required that protects the electrical components, such as the ventilation fan, placed inside the ventilation device from rainwater.
  • the present disclosure aims to provide an air conditioner that can protect the electrical components of the ventilation device from rainwater.
  • an air conditioner includes an indoor unit installed indoors and having a first heat exchanger, an outdoor unit installed outdoors and having a second heat exchanger, a refrigerant pipe that passes through a through hole in a wall separating the indoor and outdoor areas and connects the first heat exchanger and the second heat exchanger, and a ventilation device that ventilates the air in the indoor room, the ventilation device having a ventilation pipe that passes through the through hole and is drawn out from the indoor room to the outdoor area, a base that is connected to the ventilation pipe outside the outdoor area and is fixed to the wall surface of the outdoor area, a ventilation fan supported by the base, and a case that covers the ventilation fan and the base, the case having a direction perpendicular to the vertical direction along the wall surface as a first direction, the ventilation fan, and a top plate located above the base, and a first protrusion portion that is provided on the underside of the top plate and extends in the first direction over the entire length of the top plate in the first direction.
  • This disclosure provides an air conditioner that can protect the electrical components of the ventilation device from rainwater.
  • FIG. 1 is a schematic diagram showing a schematic configuration of an air conditioner according to an embodiment.
  • 1 is a schematic diagram showing an installation state of an air conditioner according to an embodiment, as viewed from the side.
  • FIG. 1 is a schematic perspective view of an installation state of an air conditioner according to an embodiment.
  • FIG. FIG. 2 is an exploded view of the ventilation device main body according to the embodiment.
  • FIG. 2 is a perspective view of the base body according to the embodiment, seen from diagonally rear left.
  • FIG. 2 is a perspective view of the base body according to the embodiment, seen from diagonally rear right.
  • FIG. 2 is a perspective view of the case according to the embodiment, seen from the lower right rear.
  • FIG. 2 is a front view of the ventilation device main body according to the embodiment.
  • FIG. 9 is a cross-sectional view of the ventilator body taken along line IX-IX in FIG. 8.
  • 9 is a cross-sectional view of the ventilator body taken along line XX in FIG. 8.
  • FIG. 11 is a partially enlarged view of a part of FIG. 10 .
  • FIG. 11 is a cross-sectional view of a ventilator body equipped with a modified case.
  • the drawings also show the X-axis, Y-axis, and Z-axis as appropriate.
  • the X-axis shows one of the horizontal directions.
  • the Y-axis shows the other of the horizontal directions.
  • the Z-axis shows the vertical direction.
  • the horizontal direction along the X-axis is called the "front-rear direction X”
  • the horizontal direction along the Y-axis is called the "left-right direction Y”
  • the vertical direction is called the "vertical direction Z”.
  • the front-rear direction X, the left-right direction Y, and the vertical direction Z are mutually perpendicular directions.
  • the side of the vertical direction Z toward which the Z-axis arrow points (+Z direction) is defined as the upper side
  • the opposite side of the vertical direction Z to the side toward which the Z-axis arrow points (-Z direction) is defined as the lower side
  • the side of the front-rear direction X toward which the X-axis arrow points (+X direction) is defined as the front
  • the opposite side of the front-rear direction X to the side toward which the X-axis arrow points (-X direction) is defined as the rear.
  • the side in the left-right direction Y toward which the Y-axis arrow points (+Y direction) is defined as the left
  • the side opposite to the side in the left-right direction Y toward which the Y-axis arrow points (-Y direction) is defined as the right.
  • Fig. 1 is a schematic diagram showing a schematic configuration of an air conditioner 100 in the present embodiment.
  • the air conditioner 100 includes an outdoor unit 10, an indoor unit 20, a circulation path section (refrigerant piping) 18, and a ventilation device 30.
  • the outdoor unit 10 is disposed outside 7.
  • the indoor unit 20 is disposed inside 8.
  • the outdoor unit 10 and the indoor unit 20 are connected to each other by a circulation path section 18 through which a refrigerant 19 circulates.
  • a part of the ventilation device 30 is disposed inside 8, and the other part is disposed outside 7.
  • the ventilation device 30 exhausts air from the room 8 in which the indoor unit 20 is disposed to the outside 7.
  • the air conditioner 100 is capable of adjusting the temperature of the air in the room 8 in which the indoor unit 20 is disposed by exchanging heat between the refrigerant 19 flowing in the circulation path section 18 and the air in the room 8 in which the indoor unit 20 is disposed.
  • the refrigerant 19 include fluorine-based refrigerants or hydrocarbon-based refrigerants that have a low Global Warming Potential (GWP).
  • GWP Global Warming Potential
  • the outdoor unit 10 comprises an outdoor unit housing 11, a compressor 12, a heat exchanger 13, a flow control valve 14, a blower 15, a four-way valve 16, and a control unit 17.
  • the outdoor unit housing 11 houses the compressor 12, the heat exchanger 13, the flow control valve 14, the blower 15, the four-way valve 16, and the control unit 17.
  • the compressor 12, heat exchanger 13, flow rate control valve 14, and four-way valve 16 are provided in a portion of the circulation path 18 that is located inside the outdoor unit housing 11.
  • the compressor 12, heat exchanger 13, flow rate control valve 14, and four-way valve 16 are connected by a portion of the circulation path 18 that is located inside the outdoor unit housing 11.
  • the four-way valve 16 is provided in a portion of the circulation path section 18 that is connected to the discharge side of the compressor 12.
  • the four-way valve 16 can reverse the direction of the refrigerant 19 flowing through the circulation path section 18 by switching a portion of the path of the circulation path section 18.
  • the path connected by the four-way valve 16 is the path shown by the solid line on the four-way valve 16 in FIG. 1
  • the refrigerant 19 flows through the circulation path section 18 in the direction shown by the solid arrow in FIG. 1.
  • the path connected by the four-way valve 16 is the path shown by the dashed line on the four-way valve 16 in FIG. 1, the refrigerant 19 flows through the circulation path section 18 in the direction shown by the dashed arrow in FIG. 1.
  • the indoor unit 20 comprises an indoor unit housing 21, a heat exchanger 22, a blower 23 as a fan, and a control unit 24.
  • the indoor unit housing 21 houses the heat exchanger 22, the blower 23, and the control unit 24 inside.
  • the indoor unit 20 is capable of cooling operation to cool the air in the room 8 in which the indoor unit 20 is located, and heating operation to warm the air in the room 8 in which the indoor unit 20 is located.
  • the blower 23 is illustrated diagrammatically in FIG. 1.
  • the refrigerant 19 flowing in the circulation path 18 flows in the direction shown by the solid arrow in Figure 1.
  • the refrigerant 19 flowing in the circulation path 18 circulates through the compressor 12, the heat exchanger 13 of the outdoor unit 10, the flow control valve 14, and the heat exchanger 22 of the indoor unit 20, in that order, before returning to the compressor 12.
  • the heat exchanger 13 in the outdoor unit 10 functions as a condenser
  • the heat exchanger 22 in the indoor unit 20 functions as an evaporator.
  • the refrigerant 19 flowing in the circulation path portion 18 flows in the direction shown by the dashed line in Figure 1.
  • the refrigerant 19 flowing in the circulation path portion 18 circulates through the compressor 12, the heat exchanger 22 of the indoor unit 20, the flow control valve 14, and the heat exchanger 13 of the outdoor unit 10, in that order, before returning to the compressor 12.
  • the heat exchanger 13 in the outdoor unit 10 functions as an evaporator
  • the heat exchanger 22 in the indoor unit 20 functions as a condenser.
  • ⁇ Indoor unit> 2 and 3 are schematic diagrams showing an installation state of the air conditioner 100 according to the embodiment.
  • the indoor unit 20 is a wall-mounted indoor unit that is fixed to an upper region of a wall surface 9a of the room 8.
  • the indoor unit 20 has a generally rectangular parallelepiped shape that is long in the left-right direction Y.
  • the blower 23 is housed in the indoor unit housing 21.
  • the blower 23 extends in the left-right direction Y.
  • the blower 23 rotates around its axis of rotation by a fan motor 23a.
  • the heat exchanger 22 is disposed inside the indoor unit housing 21, between the blower 23 and the indoor unit intake port 20a.
  • the heat exchanger 22 extends in the left-right direction Y.
  • the indoor unit housing 21 has an outer shell member 21b and an air passage member 21d.
  • the outer shell member 21b is a member that constitutes part of the outer shell of the indoor unit housing 21.
  • the outer shell member 21b improves the design of the appearance of the indoor unit 20.
  • the outer shell member 21b is a roughly rectangular box shape that opens on the wall surface 9a side. The opening of the outer shell member 21b on the wall surface 9a side is blocked by the air passage member 21d.
  • the air passage member 21d is a member that constitutes part of the air passage through which the air sucked into the indoor unit housing 21 by the blower 23 passes.
  • the air passage member 21d is hooked onto an installation plate (not shown) that is fixed to the wall surface 9a on the room 8 side. This fixes the indoor unit 20 to the wall surface 9a.
  • the indoor unit housing 21 has an indoor unit inlet 20a and an indoor unit outlet 20b.
  • the indoor unit inlet 20a and the indoor unit outlet 20b are formed in the outer shell member 21b.
  • the indoor unit inlet 20a opens upward and extends in the axial direction.
  • a filter (not shown) is disposed in the indoor unit inlet 20a.
  • the indoor unit outlet 20b opens toward the room 8 and extends in the axial direction.
  • a wind direction control vane 25 is disposed in the indoor unit outlet 20b.
  • Air from the room 8 is drawn into the indoor unit housing 21 through the indoor unit suction port 20a by the drive of the blower 23.
  • the air drawn into the indoor unit housing 21 through the indoor unit suction port 20a passes through the heat exchanger 22 and is blown out into the room 8 from the indoor unit outlet 20b.
  • the air passing through the indoor unit outlet 20b is blown by the air direction control vane 25 in the vertical direction Z and the left and right direction Y of the room 8.
  • a control unit 24 is provided inside the indoor unit housing 21.
  • the control unit 24 is disposed inside the indoor unit housing 21 at one end in the left-right direction Y.
  • the control unit 24 controls the fan motor 23a, the air direction control vane 25, the heat exchanger 22, etc.
  • the external shape of the indoor unit housing 21 is a rectangular column extending in the left-right direction Y.
  • the indoor unit housing 21 has an upper surface 21p facing upward and a lower surface 21q facing downward.
  • the indoor unit intake port 20a is provided on the upper surface 21p.
  • the indoor unit exhaust port 20b is provided on the lower surface 21q.
  • the indoor unit 20 is provided with a drain hose 20d.
  • the tip of the drain hose 20d extends to the outside 7.
  • the drain hose 20d discharges drain water that condenses on the heat exchanger 22 during cooling to the outside 7.
  • the outdoor unit 10 is disposed outdoors 7.
  • the outdoor unit housing 11 has an outdoor unit inlet 11b and an outdoor unit outlet 11a.
  • a blower 15 sends air from the outdoor unit inlet 11b side through a heat exchanger 13 (see FIG. 1) toward the outdoor unit outlet 11a, promoting heat exchange in the heat exchanger 13.
  • the outdoor unit 10 and the indoor unit 20 are connected by a circulation path section 18 and a first electrical wiring 10e.
  • the circulation path section 18 is configured in a loop shape between the outdoor unit 10 and the indoor unit 20. For this reason, the circulation path section 18 connects the outdoor unit 10 and the indoor unit 20 with a pair of pipes.
  • the first electrical wiring 10e includes a power supply line that supplies power to the outdoor unit 10 via the indoor unit 20, and a signal line for controlling the outdoor unit 10 and the indoor unit 20 in cooperation with each other.
  • the circulation path section 18 and the first electrical wiring 10e pass through a through hole 9h provided in the wall 9 that separates the indoor space 8 from the outdoor space 7. As a result, the circulation path section 18 and the first electrical wiring 10e are drawn from the indoor space 8 to the outdoor space 7.
  • the ventilation device 30 is a device that ventilates the room 8 by discharging the air inside the room 8 to the outside 7, and keeps the air inside the room 8 clean.
  • the ventilation device 30 may be driven in conjunction with the indoor unit 20 and the outdoor unit 10, or may be driven independently of these.
  • the ventilation device 30 has a ventilation intake section 32, a ventilation pipe 31, and a ventilation device main body 50.
  • the ventilation intake section 32 is attached to the indoor unit 20 in the room 8.
  • the ventilation device main body 50 is installed on the wall surface 9b of the outdoor room 7.
  • the ventilation pipe 31 extends across the room 8 and the outdoor room 7.
  • the ventilation intake section 32 draws in air from the room 8.
  • the ventilation intake section 32 is provided on the surface of the indoor unit housing 21. In this embodiment, the ventilation intake section 32 is located on the underside 21q of the indoor unit housing 21.
  • the ventilation pipe 31 is a tubular pipe.
  • the ventilation pipe 31 connects the ventilation device main body 50 and the ventilation intake section 32. Therefore, one end of the ventilation pipe 31 is located inside the room 8, and the other end is located outside the room 7.
  • the ventilation pipe 31 passes through the inside of the indoor unit housing 21 and the through hole 9h in the wall 9 and is drawn out to the outside the room 7.
  • FIG. 4 is an exploded view of the ventilator main body 50.
  • the direction perpendicular to the vertical direction Z along the wall surface 9b to which the ventilation device main body 50 is attached is the left-right direction Y or the first direction
  • the direction perpendicular to the wall surface 9b is the front-rear direction X or the second direction.
  • the direction perpendicular to the wall surface 9b that moves away from the wall surface 9b is called the forward (+X direction)
  • the direction approaching the wall surface 9b is called the rear (-X direction).
  • the left and right are defined based on the posture of the observer facing forward (+X direction).
  • the left hand side of the observer facing the opposite side (+X direction) of the wall surface 9b is called the left side (+Y direction), and the right hand side is called the right side (-Y direction).
  • the left-right direction of the ventilation device main body 50 and the left-right direction of the outdoor unit 10 coincide with each other, but these left-right directions do not necessarily have to coincide with each other.
  • the ventilation device main body 50 has a ventilation fan 51, a duct member 52, a backflow prevention valve 53, a base 80, a joint member 75, and a case 40.
  • the base 80 is fixed to the wall surface 9b by fixing screws (not shown).
  • the base 80 supports other components of the ventilation device main body 50.
  • the ventilation pipe 31 (see FIG. 3) is connected to the base 80.
  • the base 80 has a base main body 60, an installation plate 70, and a drain valve 69.
  • the mounting plate 70 is a plate-shaped member made of sheet metal.
  • the mounting plate 70 is disposed between the base body 60 and the wall surface 9b.
  • the mounting plate 70 protects the wall surface 9b.
  • the upper end of the case 40 is engaged with the upper end 70a of the mounting plate 70.
  • the lower end 70c of the mounting plate 70 is bent forward. The lower end of the case 40 is screwed to the lower end 70c of the mounting plate 70.
  • An air passage 60F is provided inside the base body 60.
  • the base body 60 has a first member 61 and a second member 62 that are assembled together in the front-rear direction X.
  • the air passage 60F is mainly formed between the first member 61 and the second member 62.
  • the first member 61 constitutes the rear portion of the base body 60. Meanwhile, the second member 62 constitutes the front portion of the base body 60.
  • the second member 62 supports the ventilation fan 51.
  • the ventilation fan 51 is fixed to a forward-facing area of the second member 62.
  • the second member 62 has an opening 62a that penetrates the second member 62 in the front-rear direction X.
  • the downstream end of the air passage 60F opens forward at the opening 62a.
  • the opening 62a is covered by the ventilation fan 51.
  • the base body 60 is provided with a drain hole (not shown).
  • the drain hole extends downward from the air passage 60F. This allows the air passage 60F to communicate with the external space.
  • the drain hole drains condensed water that accumulates in the air passage 60F.
  • a drain valve 69 is attached to the drain hole. The drain valve 69 closes the drain hole when the ventilation fan 51 is driven and negative pressure is created in the air passage. The drain valve 69 also opens the drain hole due to the weight of the water in the air passage 60F, allowing the water that has accumulated in the air passage 60F to drain from the drain hole.
  • the base main body 60 has a box-shaped portion 63 that is rectangular when viewed from the rear, and a pipe portion 64 that is shaped like a pipe and is disposed to the right (-Y direction) of the box-shaped portion 63.
  • the box-shaped portion 63 and the pipe portion 64 are formed by assembling a first member 61 and a second member 62, respectively, in the front-rear direction X. Furthermore, each portion of the air passage 60F is disposed inside the box-shaped portion 63 and the pipe portion 64, respectively.
  • the pipe section 64 protrudes to the right (-Y direction) from the side of the box-shaped section 63 and extends further upward.
  • the internal space of the pipe section 64 forms the upstream area of the air passage 60F.
  • the ventilation pipe 31 is connected to the pipe section 64.
  • the connection between the pipe section 64 and the ventilation pipe 31 is covered by a cylindrical joint member 75 shown in Figure 4.
  • the joint member 75 protects the connection between the pipe section 64 and the ventilation pipe 31.
  • the box-shaped portion 63 has a top surface 60a facing upward, a first side surface 60b facing to the right (-Y direction), and a second side surface 60c facing to the left (+Y direction). That is, the base 80 has a top surface 60a and a pair of side surfaces 60b, 60c.
  • the first side surface 60b is connected to the right end (-Y direction) of the top surface 60a.
  • the second side surface 60c is connected to the left end (+Y direction) of the top surface 60a.
  • the upper surface 60a is provided with an upper surface protrusion portion (second protrusion portion) 65.
  • the upper surface protrusion portion 65 extends linearly in the left-right direction Y over the entire length of the upper surface 60a in the left-right direction Y.
  • the upper surface protrusion portion 65 protrudes upward relative to the upper surface 60a.
  • the first side surface 60b is provided with a first side surface protrusion portion (third protrusion portion) 66
  • the second side surface 60c is provided with a second side surface protrusion portion (third protrusion portion) 67.
  • This pair of side surface protrusion portions 66, 67 extend downward from the ends of the upper surface protrusion portion 65 in the left-right direction Y. Furthermore, the pair of side surface protrusion portions 66, 67 protrude in the left-right direction Y relative to the sides 60b, 60c, respectively.
  • the upper end portion of the first side surface protrusion portion 66 is connected to the right end (-Y direction) of the upper surface protrusion portion 65. Meanwhile, the upper end portion of the second side surface protrusion portion 67 is connected to the left end (+Y direction) of the upper surface protrusion portion 65.
  • the top surface ridge 65 and the side surface ridges 66, 67 are ribs provided on the front edge of the first member 61.
  • the top surface ridge 65 and the side surface ridges 66, 67 are positioned rearward of the rear edge of the second member 62.
  • the top surface ridge 65 and the side surface ridges 66, 67 are located rearward (toward the wall 9) of the boundary between the first member 61 and the second member 62.
  • top surface protrusion 65 prevents the rainwater running down the top surface 60a from flowing forward (in the +X direction) beyond the top surface protrusion 65.
  • This rainwater also flows in the left-right direction Y and flows downward from the end in the left-right direction Y along the side surfaces 60b, 60c.
  • Side surfaces 60b, 60c are also provided with side surface protrusions 66, 67 that are continuous with the top surface protrusion 65. For this reason, the rainwater is also prevented from flowing forward (in the +X direction) beyond the side surface protrusions 66, 67 on the side surfaces 60b, 60c.
  • the first side protrusion 66 has a first extension 66a extending downward from the upper protrusion 65, and a second extension 66b that connects to the lower end of the first extension 66a and extends at an angle toward the rear (-X direction) as it extends downward.
  • the first extension 66a extends parallel to the vertical direction Z.
  • the rearward facing surface of the second extension 66b connects to the rear surface 64a of the pipe section 64 at its lower end. Therefore, the first side protrusion 66 guides rainwater that runs downward along the surface of the first side 60b to the rear surface 64a of the pipe section 64.
  • the rear surface 64a of the pipe section 64 is provided with a pair of rear protrusions 64b, 64c that extend parallel to the vertical direction Z. Rainwater that reaches the rear surface 64a of the pipe section 64 by being guided by the first side ridge 66 passes between the pair of rear ridges 64b, 64c and drips down from the lower end of the base body 60.
  • the second side ridge 67 has a third extension 67a extending downward from the upper ridge 65, a fourth extension 67b connecting to the lower end of the third extension 67a and extending downward at an angle toward the rear (-X direction), and a fifth extension 67c extending downward from the lower end of the fourth extension 67b.
  • the third extension 67a and the fifth extension 67c extend parallel to the vertical direction Z.
  • the lower end of the fifth extension 67c reaches the lower end of the second side 60c.
  • the second side ridge 67 guides rainwater running downward along the surface of the second side 60c to the lower end of the base 80. Rainwater that has been guided by the second side ridge 67 to the lower end of the second side 60c drips directly.
  • the side ridges 66, 67 are not linear, but are bent backward. This allows a large area of the outer surface of the base 80 to be provided forward of the side ridges 66, 67, and protects a wide area of the outer surface of the base 80 from rainwater.
  • the top surface ridge 65, the first side surface ridge 66, and the second side surface ridge 67 divide the outer surface of the base 80 into a rear region B and a front region F.
  • the rear region B is the region located at the rear (i.e., toward the wall 9) of the outer surface of the base 80.
  • the front region F is the region located on the opposite side of the rear region B (i.e., in the direction away from the wall 9).
  • the "outer surface" of the base 80 here refers to the region of the surface of the base 80 that is exposed to the outside.
  • an upper surface protrusion 65, a first side surface protrusion 66, and a second side surface protrusion 67 are provided between the front region F and the rear region B. For this reason, rainwater that adheres to the rear region B is unlikely to reach the front region F by traveling downward.
  • the boundary between the first member 61 and the second member 62 is provided in the front region F. According to this embodiment, rainwater is unlikely to reach the boundary between the first member 61 and the second member 62.
  • the ventilation fan 51 is fixed to the base body 60 from the front (+X direction). More specifically, the ventilation fan 51 is attached to the front region F of the base body 60. For this reason, rainwater running down the surface of the base body 60 is unlikely to reach the ventilation fan 51, and the ventilation fan 51 is protected from the rainwater.
  • the ventilation fan 51 has a cylindrical rotor 51a centered on a central axis extending in the front-rear direction X, a fan motor 51b that rotates the rotor 51a, a fan box 51c that houses the rotor 51a and the fan motor 51b, and a terminal block 51e.
  • the ventilation fan 51 in this embodiment is a so-called sirocco fan.
  • the ventilation fan 51 sends air from the inner diameter side to the outer diameter side of the rotor 51a by rotating the rotor 51a.
  • the fan box 51c is fixed to an area of the base body 60 facing forward (+X direction).
  • a rotor 51a and a fan motor 51b are arranged inside the fan box 51c.
  • the fan box 51c has a fan inlet (not shown) connected to the opening 62a of the base body 60, and a fan outlet 51d facing downward.
  • the ventilation fan 51 draws air in from the air passage 60F of the base body 60 at the fan inlet and blows the air downward from the fan outlet 51d.
  • the terminal block 51e is fixed to an area of the base body 60 facing forward (+X direction).
  • the terminal block 51e supports multiple terminals (not shown) extending from the fan motor 51b. Electrical wiring (not shown) extending from the indoor unit 20 or the outdoor unit 10 is connected to these terminals.
  • the backflow suppression valve 53 is attached to the fan outlet 51d.
  • the backflow suppression valve 53 closes the fan outlet 51d.
  • the backflow suppression valve 53 is opened when the ventilation fan 51 blows air out of the fan outlet 51d.
  • the backflow suppression valve 53 prevents air from flowing back from the fan outlet 51d toward the inside of the ventilation fan 51.
  • the duct member 52 is attached to the case 40.
  • the duct member 52 is disposed directly below the fan outlet 51d.
  • the duct member 52 guides the air blown downward from the fan outlet 51d to the exhaust port 46a provided at the lower end of the case 40.
  • the case 40 is box-shaped and opens to the rear.
  • the case 40 is supported by the mounting plate 70.
  • the case 40 covers the base 80, the ventilation fan 51, the backflow prevention valve 53, and the duct member 52. In this way, the case 40 protects the base 80, the ventilation fan 51, the backflow prevention valve 53, and the duct member 52.
  • FIG. 7 is a perspective view of the case 40 as seen from the lower left rear.
  • a duct member 52 is attached to the case 40.
  • the case 40 has a case body 41 made of resin and a sheet metal member 49 made of sheet metal attached to the inner surface of the case body 41 .
  • the case body 41 has a top plate 42 located above the internal space A of the case body 41, a right side plate 43 located to the right of the internal space A (-Y direction), a left side plate 44 located to the left of the internal space A (+Y direction), a front plate 45 located in front of the internal space A (+X direction), a bottom plate 46 located below the internal space A, and a side box section 47 connected to the right side plate 43.
  • the top plate 42 is a flat plate that slopes downward as it moves forward.
  • a top plate protrusion portion (first protrusion portion) 48 is provided on the underside 42a of the top plate 42.
  • the top plate protrusion portion 48 extends in the left-right direction Y over the entire length of the top plate 42 in the left-right direction Y.
  • the top plate protrusion portion 48 protrudes downward from the underside 42a.
  • the top plate protrusion portion 48 is a separate member from the case body 41.
  • the top plate protrusion portion 48 is a sponge-like porous body P1 that is attached to the underside 42a of the top plate 42 via an adhesive layer.
  • FIG. 8 is a front view of the ventilation device main body 50.
  • FIG. 9 is a cross-sectional view of the ventilation device main body 50 along line IX-IX in FIG. 8.
  • FIG. 10 is a cross-sectional view of the ventilation device main body 50 along line X-X in FIG. 8.
  • the top plate 42 covers the ventilation fan 51 and the base 80 from above.
  • the lower surface 42a of the top plate 42 faces the upper surface 60a of the base main body 60 in the vertical direction Z.
  • the top plate protrusion 48 faces the upper surface 60a of the base main body 60 in the vertical direction Z.
  • the top plate protrusion 48 is positioned rearward (i.e., toward the wall 9) of the upper surface protrusion 65 of the base 80.
  • a first hook portion 42f is provided at the rear end of the top plate 42 (i.e., the end on the wall 9 side).
  • the first hook portion 42f protrudes downward and extends in the left-right direction Y.
  • the first hook portion 42f is engaged with the upper end portion 70a of the mounting plate 70.
  • the first hook portions 42f extend in a rib shape in the left-right direction Y.
  • the case body 41 is provided with a pair of first hook portions 42f.
  • the pair of first hook portions 42f are arranged side by side in the left-right direction Y.
  • the lower plate 46 faces the top plate 42 in the vertical direction Z.
  • An exhaust port 46a is provided on the lower plate 46.
  • the exhaust port 46a is connected to the downstream end of the duct member 52.
  • the exhaust port 46a blows out the air that has passed through the ventilation pipe 31 and reached the ventilation device main body 50 to the outside 7.
  • the blowing direction becomes downward, and it is possible to prevent rainwater from entering the inside of the ventilation device main body 50 from the exhaust port 46a.
  • the lower plate 46 is screwed to the lower end 70c (see FIG. 4) of the mounting plate 70. In this way, the case 40 is fixed to the base 80.
  • the side box part 47 is formed so as to protrude to the right (-Y direction) from the right side plate 43.
  • the side box part 47 covers the pipe part 64 (see Figure 5) of the base main body 60 from the front (+X direction).
  • the upper end of the side box part 47 is located below the top plate 42.
  • the upper end of the side box part 47 is provided with a notch part 47a extending forward from the rear edge.
  • the ventilation piping 31 connected to the pipe part 64 is positioned inside the notch part 47a.
  • the sheet metal member 49 is arranged along the inner surface of the case body 41.
  • the sheet metal member 49 has a first extension portion 49a extending in the front-rear direction X along the top plate 42, and a second extension portion 49b extending in the vertical direction Z along the front plate 45.
  • the first extension portion 49a is arranged in the center of the top plate 42 in the left-right direction Y.
  • the second extension portion 49b is arranged in the center of the front plate 45 in the left-right direction Y.
  • the front end of the first extension portion 49a and the upper end of the second extension portion 49b are connected to each other.
  • the boundary between the first extension portion 49a and the second extension portion 49b is formed by bending.
  • the first extension portion 49a has a second hook portion (hook portion) 49f and a bent portion 49g.
  • the second hook portion 49f is provided at the rear end portion of the first extension portion 49a (i.e., the end portion on the wall 9 side).
  • the second hook portion 49f is formed by bending downward.
  • the second hook portion 49f is disposed between a pair of first hook portions 42f aligned in the left-right direction Y.
  • the second hook portion 49f can be engaged with the mounting plate 70. That is, the second hook portion 49f can be engaged with the base 80. If the second hook portion 49f is disposed in a position where it can be engaged with the base 80, it can be engaged with the base 80 when the case 40 moves downward relative to the base 80, and does not need to be in contact with the base 80.
  • the case 40 of this embodiment is engaged with the base 80 at the first hook portion 42f of the case body 41. When the first hook portion 42f is damaged by an unexpected impact or the like and the engagement at the first hook portion 42f is released, the second hook portion 49f is engaged with the base 80. In this way, the sheet metal member 49 prevents the case 40 from coming off the base 80.
  • FIG. 11 is a partially enlarged view of FIG.
  • the bent portion 49g is disposed in front of the second hook portion 49f (+X direction) and is connected to the second hook portion 49f.
  • the bent portion 49g has a first piece 49j and a second piece 49k.
  • the first piece 49j and the second piece 49k are each flat.
  • the first piece 49j extends in a downward inclined direction as it moves forward (i.e., as it moves away from the wall surface 9b).
  • the second piece 49k is connected to the lower end of the first piece 49j.
  • the second piece 49k extends in a upward inclined direction as it moves forward.
  • the bent portion 49g is formed in a V-shape with the lower end 49p being the boundary between the first piece 49j and the second piece 49k.
  • the lower end 49p of the bent portion 49g is disposed rearward (i.e., toward the wall 9) of the upper surface protrusion portion 65 of the base 80.
  • a sponge-like porous body P2 is attached to the underside of the first piece 49j of the bent portion 49g.
  • the porous body P2 attached to the first piece 49j may be the same material as the porous body P1 constituting the top plate protrusion portion 48, or a different material.
  • the porous body P2 extends across the entire width of the first piece 49j in the left-right direction Y.
  • the porous body P2 is positioned behind the top surface protrusion portion 65 of the base 80 (i.e., on the wall 9 side).
  • the porous body P2 in this embodiment has a rectangular parallelepiped shape.
  • the porous body P2 in this embodiment is in contact with the front surface 70b of the upper end portion 70a of the mounting plate 70, and is deformed to conform to the shape of the front surface 70b.
  • the upper end portion 70a of the mounting plate 70 is bent so as to protrude forward (in the +X direction).
  • the central portion in the left-right direction Y of the porous body P1 that constitutes the top plate protrusion portion 48 is located above the first piece 49j.
  • the central portion of the porous body P1 contacts the upper surface of the first piece 49j and is compressed and deformed by being sandwiched between it and the lower surface 42a of the top plate 42.
  • the air conditioner 100 of this embodiment includes an indoor unit 20, an outdoor unit 10, a circulation path section (refrigerant piping) 18, and a ventilation device 30.
  • the indoor unit 20 is installed in the room 8 and has a heat exchanger (first heat exchanger) 22.
  • the outdoor unit 10 is installed in the outdoor 7 and has a heat exchanger (second heat exchanger) 13.
  • the circulation path section 18 passes through a through hole 9h in a wall 9 that separates the room 8 from the outdoor 7, and connects the heat exchanger 22 of the indoor unit 20 to the heat exchanger 13 of the outdoor unit 10.
  • the ventilation device 30 ventilates the air in the room 8.
  • the ventilation device 30 has a ventilation pipe 31, a base 80, a ventilation fan 51, and a case 40.
  • the ventilation pipe 31 is drawn from the room 8 to the outdoor 7 through the through hole 9h.
  • the base 80 is connected to the ventilation pipe 31 in the outdoor 7 and is fixed to a wall surface 9b of the outdoor 7.
  • the ventilation fan 51 is supported by the base 80.
  • the case 40 covers the ventilation fan 51 and the base 80.
  • the case 40 covers the ventilation fan 51 and the base 80.
  • the case 40 has a top plate 42 located above the ventilation fan 51 and the base 80, and a top plate protrusion portion (first protrusion portion) 48 provided on the lower surface 42a of the top plate 42.
  • the direction perpendicular to the vertical direction Z along the wall surface 9b is defined as the left-right direction (first direction) Y, and the top plate protrusion portion 48 extends in the left-right direction Y over the entire length of the top plate 42 in the left-right direction Y.
  • the ventilation fan 51 is arranged in the internal space A of the case 40.
  • the case 40 prevents rainwater from directly splashing on the ventilation fan 51.
  • the case 40 of this embodiment is provided with a top plate protrusion 48 that extends in the left-right direction Y over the entire length of the top plate 42 in the left-right direction Y on the underside 42a of the top plate 42. Therefore, rainwater that flows around from the rear end of the case 40 to the underside 42a of the top plate 42 is blocked by the top plate protrusion 48 and is less likely to flow forward (in the +X direction) than the top plate protrusion 48.
  • the top plate 42 is inclined downward as it moves away from the wall surface 9b. Therefore, rainwater that splashes on the upper surface of the top plate 42 flows down in a direction away from the wall surface 9b, reducing the amount of rainwater that flows down the wall surface 9b and enters the inside of the case 40. In addition, rainwater that wraps around the underside 42a of the top plate 42 flows forward along the incline and is collected in the top plate protrusion portion 48. This allows the rainwater to drip downward quickly from the top plate protrusion portion 48.
  • the base 80 has an upper surface 60a facing the top plate 42, and an upper surface protrusion portion (second protrusion portion) 65 that is provided on the upper surface 60a and extends in the left-right direction Y over the entire length of the upper surface 60a in the left-right direction Y.
  • the upper surface protrusion portion 65 is disposed farther from the wall surface 9b than the top plate protrusion portion 48. Therefore, rainwater dripping from the top plate protrusion portion 48 adheres to the upper surface 60a of the base 80 on the wall 9 side of the upper surface protrusion portion 65.
  • the upper end of the upper surface protrusion 65 is positioned close to the underside 42a of the top plate 42.
  • the upper surface protrusion 65 protrudes upward, narrowing the gap between the upper surface protrusion 65 and the underside 42a of the top plate 42. Therefore, even if rainwater flows along the underside 42a of the top plate 42 forward of the top plate protrusion 48, the rainwater can come into contact with the upper surface protrusion 65 and be easily collected. This further prevents the rainwater from flowing forward of the upper surface protrusion 65.
  • the base 80 has a pair of side surfaces 60b, 60c that are connected to the upper surface 60a and face the left-right direction Y, and side surface protrusions (third protrusions) 66, 67 that are provided on the pair of side surfaces 60b, 60c, respectively.
  • the side surface protrusions 66, 67 are connected to the upper surface protrusion 65 at their upper ends. Therefore, the side surface protrusions 66, 67 can prevent rainwater that flows down from the upper surface 60a to the side surfaces 60b, 60c from flowing forward (in the +X direction). This can better protect the electrical components arranged in the front area of the base 80 from rainwater.
  • the top surface ridge 65 and the side surface ridges 66, 67 divide the outer surface of the base 80 into a rear region B located on the wall 9 side and a front region F located on the opposite side.
  • the ventilation fan 51 is fixed to the front region F. By positioning the ventilation fan 51 in the front region F in this manner, rainwater can be blocked by the top surface ridge 65 and the side surface ridges 66, 67, and the ventilation fan 51, which is an electrical component, can be protected from rainwater. This improves the reliability of the ventilation device 30.
  • the top plate protrusion 48 is a porous body P1 attached to the underside 42a of the top plate 42.
  • the porous body P1 is capable of retaining liquid inside. This makes it possible for the top plate protrusion 48 to retain rainwater that has traveled down the underside 42a of the top plate 42 and reached the top plate protrusion 48, and even in the case of a heavy rainfall, the rainwater can be prevented from flowing forward of the top plate protrusion 48.
  • the direction perpendicular to the wall surface 9b is the front-rear direction (second direction) X
  • the case 40 has a case body 41 having a top plate 42, and a sheet metal member 49 made of sheet metal that extends in the front-rear direction X along the lower surface 42a of the top plate 42.
  • the sheet metal member 49 has a second hook portion 49f that is provided at the end on the wall 9 side and can be engaged with the base portion 80, and a bent portion 49g that is connected to the second hook portion 49f.
  • the bent portion 49g has a first piece 49j that extends at an incline downward as it moves away from the wall surface 9b, and a second piece 49k that connects to the lower end 49p of the first piece 49j and extends at an incline upward as it moves away from the wall surface 9b.
  • the sheet metal member 49 When such a sheet metal member 49 is provided, the sheet metal member 49 is close to the wall surface 9b at the second hook portion 49f. Therefore, it is assumed that rainwater running down the wall surface 9b will enter the case 40 through the sheet metal member 49.
  • the sheet metal member 49 is provided with a bent portion 49g in which the first piece 49j and the second piece 49k form a V-shape. Therefore, rainwater running down from the wall surface 9b can be collected at the lower end 49p of the bent portion 49g and dripped downward. This makes it possible to prevent the rainwater from flowing forward (in the +X direction) of the lower end 49p of the bent portion 49g.
  • the electrical components to be protected from rainwater forward of the lower end 49p of the bent portion 49g, it is possible to further prevent rainwater dripping from the bent portion 49g from splashing on these parts.
  • a porous body P2 extending in the left-right direction Y over the entire width of the first piece 49j in the left-right direction Y is attached to the underside of the first piece 49j.
  • the sheet metal member 49 is disposed closer to the wall surface 9b than other parts of the case 40 at the second hook portion 49f. Therefore, the amount of rainwater that runs down the surface of the sheet metal member 49 and enters the case 40 is more likely to be greater than the amount of rainwater that runs down other parts.
  • the rainwater running down the sheet metal member 49 can be dripped not only from the lower end 49p of the bent portion 49g, but also from the porous body P2.
  • the width dimension in the front-rear direction X of the porous body P2 attached to the sheet metal member 49 is greater than the width dimension in the front-rear direction of the porous body P1 attached to the top plate 42. As a result, the porous body P2 can effectively retain a large amount of rainwater that runs down the sheet metal member 49.
  • the lower end 49p of the bent portion 49g and the porous body P2 attached to the first piece 49j are positioned behind the upper surface ridge 65 of the base 80 (i.e., on the wall 9 side). Therefore, rainwater dripping from the lower end 49p of the bent portion 49g and the porous body P2 adheres to the upper surface 60a of the base 80 on the wall 9 side of the upper surface ridge 65. In addition, rainwater dripping onto the upper surface 60a is blocked by the upper surface ridge 65 and is less likely to flow forward of the upper surface ridge 65. Therefore, according to this embodiment, by positioning the electrical components to be protected from rainwater forward of the upper surface ridge 65, these electrical components can be more effectively protected from rainwater flowing down the surface of the base 80.
  • the case 140 of this modified example has a case body 141, similar to the embodiment described above.
  • the case body 141 also has a ventilation fan 51 and a top plate 142 located above the base 80.
  • a top plate protrusion portion (first protrusion portion) 148 is provided on the lower surface 142a of the top plate 142, extending in the left-right direction Y over the entire length of the top plate 142 in the left-right direction Y.
  • the top plate protrusion 148 is a rib that is provided on the underside 142a of the top plate 142 and protrudes downward from the underside 142a.
  • the top plate protrusion 148 is provided integrally with the top plate 142 as shown in this modified example, there is no need to fasten a separate member to the top plate 142, and the manufacturing process for the case 140 can be simplified.
  • the present disclosure is not limited to the configurations of the above-mentioned embodiments.
  • the underside of the top plate may be provided with a plurality of first protrusions aligned in the front-rear direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)
PCT/JP2023/000908 2023-01-16 2023-01-16 空気調和機 Ceased WO2024154172A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2023/000908 WO2024154172A1 (ja) 2023-01-16 2023-01-16 空気調和機
JP2024571434A JP7802212B2 (ja) 2023-01-16 2023-01-16 空気調和機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/000908 WO2024154172A1 (ja) 2023-01-16 2023-01-16 空気調和機

Publications (1)

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WO2024154172A1 true WO2024154172A1 (ja) 2024-07-25

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Country Link
JP (1) JP7802212B2 (https=)
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175738U (https=) * 1987-05-06 1988-11-15
JPS645032U (https=) * 1987-06-25 1989-01-12
JP2000146259A (ja) * 1998-11-16 2000-05-26 Daikin Ind Ltd 空調装置
JP2005083654A (ja) * 2003-09-09 2005-03-31 Sanyo Electric Co Ltd 空気調和機
JP2006284150A (ja) * 2005-04-05 2006-10-19 Inaba Denki Sangyo Co Ltd コーナー用化粧カバー

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63175738U (https=) * 1987-05-06 1988-11-15
JPS645032U (https=) * 1987-06-25 1989-01-12
JP2000146259A (ja) * 1998-11-16 2000-05-26 Daikin Ind Ltd 空調装置
JP2005083654A (ja) * 2003-09-09 2005-03-31 Sanyo Electric Co Ltd 空気調和機
JP2006284150A (ja) * 2005-04-05 2006-10-19 Inaba Denki Sangyo Co Ltd コーナー用化粧カバー

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JP7802212B2 (ja) 2026-01-19

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