air conditioning unit

Abstract

To solve a problem that it is difficult to maintain components of an air conditioning unit larger than a filter.SOLUTION: An indoor unit 30 includes: a box member 31 and a bottom plate member 32 that are installed at an upper side of an air-conditioned space SP1; an opening / closing member 100; and a first frame member 80 having a first support part and a second support part. The box member 31 and the bottom plate member 32 accommodate an indoor fan 43, an indoor heat exchanger 42 and a drain pan 46. An air suction port 32b is formed on the lower surface of the box member 31 and the bottom plate member 32. The first frame member 80 is positioned below the suction port 32b. The first support part and the second support part are positioned below the box member 31 and the bottom plate member 32 and support the opening / closing member 100. The first frame member 80 and the opening / closing member 100 are configured so that the drain pan 46 can be taken out to a space US when the opening / closing member 100 is opened.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an air conditioning unit, and more particularly to an air conditioning unit equipped with an opening and closing member. [Background technology]

[0002] Patent Document 1 (JP 2001-27428 A) discloses extending an outlet duct from an air conditioning unit installed above the ceiling of a room, and moving the position from which conditioned air is blown away from the main body of the air conditioning unit. The outlet duct extends from the side of the main body of the air conditioning unit. Meanwhile, the intake port is formed on the underside of the main body of the air conditioning unit. Summary of the Invention [Problem to be solved by the invention]

[0003] In such air conditioning units, a decorative panel is often provided below the main body. The decorative panel hides the gap between the ceiling opening and the main body of the air conditioning unit as much as possible, improving the appearance. The above-mentioned Patent Document 1 (JP 2001-27428 A) includes an air intake panel, which not only improves the appearance but also guides room air to the air intake of the main body of the air conditioning unit. The air intake panel is then removed when inspecting and maintaining the air conditioning unit.

[0004] However, the panel disclosed in Patent Document 1 (JP 2001-27428 A) is attached to the ceiling surface from the indoor side, and requires tools to remove. Also, while removing the panel makes it possible to clean the filter, the structure makes it difficult to maintain parts of the air conditioning unit that are larger than the filter. [Means for solving the problem]

[0005] The air conditioning unit of a first aspect comprises a main casing, an opening / closing member, and a support member. The main casing is installed above or above the space to be air-conditioned. The main casing houses a fan, a heat exchanger, and a drain pan. An air intake port is formed on the underside of the main casing. The opening / closing member is located below the intake port. The support member has a support portion. The support portion is located below the main casing and supports the opening / closing member. The support member and the opening / closing member are configured so that the drain pan can be removed into a first space when the opening / closing member is in an open state. The first space is the space below the support portion.

[0006] In this case, when the opening / closing member is in the open state, the drain pan can be removed into the first space below the support part, thereby improving the ease of maintenance of the air conditioning unit.

[0007] An air conditioning unit according to a second aspect is the air conditioning unit according to the first aspect, wherein the opening / closing member is in a closed state when placed on the support portion and in an open state when removed from the support portion, and the drain pan is arranged so that at least a portion of the drain pan overlaps with the opening / closing member in a bottom view when the opening / closing member is in the closed state.

[0008] Here, because the open / close member and the drain pan at least partially overlap in a closed state when viewed from below, it is difficult or impossible to remove the drain pan into the first space when the open / close member is closed. However, in the air conditioning unit of the second aspect, the open / close member can be opened, so the drain pan can be removed during maintenance.

[0009] An air conditioning unit according to a third aspect is the air conditioning unit according to the first aspect, wherein the opening / closing member supported by the support portion is capable of changing its position. The opening / closing member is in a closed state when in a first position along the horizontal direction. The opening / closing member is in an open state when in a second position different from the first position. The drain pan is arranged so that at least a portion of the drain pan overlaps with the opening / closing member in a bottom view when the opening / closing member is in the closed state.

[0010] Here, the open / close member and the drain pan in the closed state at least partially overlap when viewed from below, so when the open / close member is in the closed state, it is difficult or impossible to remove the drain pan into the first space. However, in the air conditioning unit of the fifth aspect, the open / close member can be opened, so the drain pan can be removed during maintenance.

[0011] An air conditioning unit according to a fourth aspect is the air conditioning unit according to the second aspect, wherein a gap is provided between the support portion and the main casing. By providing this gap, at least a portion of the open / close member in the closed state can be lifted up and removed from the support portion. Furthermore, because a gap is provided between the support portion and the main casing, the open / close member can be shifted from the support portion in a bottom view, allowing the open / close member to be removed into the first space.

[0012] An air conditioning unit according to a fifth aspect is the air conditioning unit according to any one of the second to fourth aspects, wherein the outer edge of the opening / closing member in the closed state is positioned outside the outer edge of the drain pan when viewed from below.

[0013] Here, the drain pan is configured so that it fits entirely inside the outer edge of the opening and closing member when viewed from below, so that the drain pan can be easily removed by opening the opening and closing member.

[0014] An air conditioning unit according to a sixth aspect is the air conditioning unit according to any one of the first to fifth aspects, further comprising a tubular canvas member. The canvas member extends downward from the main casing. A space connecting an opening formed by the lower end of the canvas member and the opening / closing member to the suction port of the main casing forms an intake flow path that guides air from the space to be air-conditioned to the fan in the main casing.

[0015] Here, even if the main body casing is placed in a space slightly above the space to be air-conditioned, the canvas member can guide air from the space to be air-conditioned into the main body casing.

[0016] An air conditioning unit according to a seventh aspect is the air conditioning unit according to the sixth aspect, wherein the opening at the upper end of the canvas member is smaller than the opening at the lower end of the canvas member.

[0017] An air conditioning unit according to an eighth aspect includes a main casing, an opening / closing member, and a support member. The main casing is installed above or above the space to be air-conditioned. The main casing houses a fan, a heat exchanger, and a drain pan. An air intake port is formed on the underside of the main casing. The opening / closing member is located below the intake port. The support member has a support portion. The support portion is located below the main casing and supports the opening / closing member. In order to allow maintenance of the drain pan when the opening / closing member is in the open position, the outer edge of the opening / closing member in the closed position is located outside the outer edge of the drain pan when viewed from below.

[0018] Here, the size of the opening / closing member is increased, so that when the opening / closing member is in the open position, maintenance of the drain pan is easy, thereby improving the maintainability of the air conditioning unit. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 2 is a diagram showing a refrigerant piping system of the air conditioning apparatus. [Figure 2] FIG. 2 is a perspective view showing an example of a duct and a blowout unit extending from an indoor unit which is a utilization unit of the air conditioning apparatus. [Figure 3] FIG. 10 is a perspective view showing another example of a duct extending from an indoor unit and an air outlet unit. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 6 is an enlarged perspective view showing the attachment of part VI in FIG. 5. [Figure 7] FIG. 7 is an enlarged perspective view showing the attachment of part VII in FIG. 5; [Figure 8]FIG. 10 is a diagram comparing the sizes of the box member, drain pan, frame member, first opening / closing panel, and opening / closing frame when viewed from below. [Figure 9] FIG. [Figure 10] 10 is a conceptual diagram showing the state in which the first opening / closing panel and the opening / closing frame are rotated relative to the first frame member, and the drain pan and the like are removed. DETAILED DESCRIPTION OF THE INVENTION

[0020] (1) Overall configuration of the air conditioning unit FIG. 1 is a diagram showing a refrigerant piping system of an air conditioner 10 having multiple indoor and outdoor units. The air conditioner 10 is a device that heats and cools rooms in a building by operating a vapor compression refrigeration cycle. The air conditioner 10 includes an outdoor unit 20 as a heat source unit, multiple indoor units 30 as utilization units, and a first refrigerant connection pipe 6 and a second refrigerant connection pipe 7 that connect the outdoor unit 20 and the indoor units 30. The refrigerant circuit of the air conditioner 10 is formed by connecting the outdoor unit 20, the indoor units 30, and the refrigerant connection pipes 6 and 7. A refrigerant is sealed within the refrigerant circuit, and refrigeration cycle operation is performed in which the refrigerant is compressed, cooled, decompressed, heated and evaporated, and then compressed again. The refrigerant may be selected from the group consisting of R410A, R407C, R32, R134a, carbon dioxide, and the like.

[0021] 2 and 3, the conditioned air (cold air or hot air) blown out from the indoor unit 30 is supplied from the blow-out unit 55 via the duct 53 to the space to be air-conditioned SP1 in the room.

[0022] (1-1) Outdoor unit The outdoor unit 20 is installed outside the building or in the basement of the building. The outdoor unit 20 mainly has a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an outdoor expansion valve 26, and an accumulator 29. Cooling operation and heating operation are switched by switching the four-way switching valve 22. The outdoor heat exchanger 23 is a heat exchanger that functions as a radiator or evaporator of the refrigerant.

[0023] The outdoor unit 20 also has an outdoor fan 27 for drawing outdoor air into the unit and discharging it back outside. The outdoor fan 27 exchanges heat between the outdoor air and the refrigerant flowing through the outdoor heat exchanger 23.

[0024] (1-2) Indoor unit The indoor units 30 are installed on the ceilings (including the attic space) of each floor of the building. Each indoor unit 30 mainly has an indoor expansion valve 41, which is a pressure reducer, and an indoor heat exchanger 42, which is a user-side heat exchanger.

[0025] The indoor expansion valve 41 is a mechanism for reducing the pressure of the refrigerant and is an electrically operated valve with adjustable opening. One end of the indoor expansion valve 41 is connected to the first refrigerant communication pipe 6, and the other end is connected to the indoor heat exchanger 42.

[0026] The indoor heat exchanger 42 is a heat exchanger that functions as an evaporator or a radiator of the refrigerant. One end of the indoor heat exchanger 42 is connected to the indoor expansion valve 41, and the other end is connected to the second refrigerant communication pipe 7.

[0027] The indoor unit 30 also includes an indoor fan 43 for drawing indoor air into the unit and supplying it back into the room, and heat is exchanged between the indoor air and the refrigerant flowing through the indoor heat exchanger 42.

[0028] (1-3) Blowing unit 2 and 3, the blow-out unit 55 is installed at a location away from the indoor unit 30, and blows out the conditioned air sent from the indoor unit 30 via the duct 53 into the air-conditioned space SP1 of the room. The blow-out unit 55 is formed with one or more connection ports for connecting the duct 53, and an air outlet 55a exposed to the air-conditioned space SP1.

[0029] In this embodiment, both the indoor unit 30 and the blow-out unit 55 are arranged in an installation space SP2 located above the air-conditioned space SP1 of the room. This installation space SP2 is the space behind (above) a ceiling 90 of the room, which will be described later.

[0030] (2) Detailed configuration of the indoor unit Next, the detailed structure of the indoor unit 30 will be described with reference to FIGS.

[0031] (2-1) Main casing and parts housed in the main casing As shown in FIG. 4, the indoor unit 30 is disposed above the ceiling 90 of a room (space SP2) that includes the air-conditioned space SP1. The indoor unit 30 includes a metal box member 31 and a bottom plate member 32. The box member 31 and bottom plate member 32 function as a main body casing. The above-described indoor expansion valve 41, indoor heat exchanger 42, and indoor fan 43 are also housed in the box member 31. The indoor unit 30 also includes a drain pan 46 for receiving condensation water in the indoor heat exchanger 42, a bell mouth 44 provided for the indoor fan 43, and a connecting member 33 used for connecting to the duct 53. The drain pan 46 and the bell mouth 44 are housed in the box member 31. The connecting members 33 are fixed to each of the four side surfaces of the box member 31. An outlet opening 31a is formed in the side surface of the box member 31 at a position facing the opening of the cylindrical connecting member 33. The bottom surface of the box member 31 is open.

[0032] The indoor heat exchanger 42 has a generally rectangular cylindrical shape. The indoor fan 43 is a turbo fan that draws in air from below and blows it out to the side. The air blown out from the indoor fan 43 passes through the indoor heat exchanger 42 and flows into the duct 53.

[0033] The drain pan 46 is a resin member having a shape as shown in FIG. 9. A bottom plate member 32 is disposed below the drain pan 46. The bottom plate member 32 is a member having a square outer edge in a plan view, with a circular opening formed in the center. This circular opening in the bottom plate member 32 serves as an intake port 32b that guides air from below to the indoor fan 43. The upper end of a canvas member 95, which will be described later, is removably attached to the bottom plate member 32. The bottom plate member 32 also has a holder 32a that removably holds a flat air filter 39.

[0034] Box member 31 is suspended from a beam (not shown) in space SP2 above the ceiling. In this state, a large gap G1 (see FIG. 4) is formed in the height direction between box member 31 and bottom plate member 32 constituting the main body casing and ceiling 90.

[0035] (2-2) Lower part of the main casing Furthermore, the indoor unit 30 has an opening / closing member 100 (first opening / closing panel 35, opening / closing frame 60, etc.) that is supported so as to be able to change its posture, and a first frame member 80, at a position downward and away from the box member 31 and bottom plate member 32 that constitute the main casing.

[0036] (2-2-1) First frame member The first frame member 80 is fixed to the box member 31 in a manner that it is suspended from the box member 31. The first opening / closing panel 35 and the opening / closing frame 60 are supported by the first frame member 80 so that their postures can be changed. The first frame member 80 has a four-sided, annular frame main body 81 and four fixing members 82 extending upward from each of the four corners of the frame main body 81. The upper ends of the four fixing members 82 are screwed to four support portions 31c fixed to the four corners of the side of the box member 31. The lower surface of the frame main body 81 extends horizontally along the ceiling 90 as shown in FIG. 4. A first support portion 81a1 and a second support portion 81b1 that support the opening / closing frame 60 are formed on the inner periphery of the frame main body 81, as shown in FIGS. 6 and 7. The first support portion 81a1 constitutes the lower edge of the first opening 81a. The second support portion 81b1 is formed on a side opposite to the side on which the first support portion 81a1 is formed of the frame main body 81. The second support portion 81b1 is a portion that forms the lower side of the second opening 81b.

[0037] (2-2-2) First opening / closing panel and opening / closing frame The first opening / closing panel 35 and the opening / closing frame 60 are separate components as shown in Figure 5, but are integrated by a connecting member 37 to form the opening / closing member 100. The opening / closing member 100 is supported by the first frame member 80 and rotates relative to the first frame member 80.

[0038] As shown in Fig. 4, the first opening / closing panel 35 is located below the air inlet 32b of the bottom plate member 32 and the air filter 39 that covers the air inlet 32b. As shown in Fig. 5, the first opening / closing panel 35 is a rectangular plate-shaped member.

[0039] As shown in FIG. 5, the connecting members 37 are provided at four locations, one end of which is fixed to the first opening / closing panel 35 with a screw, and the other end of which is fixed to the opening / closing frame 60 with a screw.

[0040] The opening / closing frame 60 is a four-sided annular member. The opening / closing frame 60 is smaller than the frame body 81 of the first frame member 80. As shown in FIG. 4, the outer edge of the opening / closing frame 60 is disposed adjacent to the inner edge of the frame body 81 of the first frame member 80. The opening / closing frame 60 has a function of being rotatably supported with respect to the first frame member 80. The opening / closing frame 60 has an outer wall 60a, a movable member 61 shown in FIG. 6, and a supported portion 62 shown in FIG. 7.

[0041] The movable member 61 of the opening / closing frame 60 shown in Fig. 6 is a member that can be manually switched between a state in which a tip 61a protrudes outward from an opening formed in one side of the outer wall 60a (the state shown in Fig. 6) and a state in which the tip 61a is retracted into the opening formed in one side of the outer wall 60a. On the opposite side of the tip 61a of the movable member 61, a claw portion 61b is formed to allow a user or a maintenance person to hook their finger. When the tip 61a of the movable member 61 is inserted into the first opening 81a of the frame main body 81, the movable member 61 is supported by the first support portion 81a1 of the frame main body 81.

[0042] 6 shows one movable member 61, the opening / closing frame 60 has two movable members 61. The first openings 81a of the frame body 81 of the first frame member 80 are also formed in multiple locations on the first frame member 80.

[0043] The supported portion 62 of the opening / closing frame 60 shown in FIG. 7 is provided on the outer wall 60a of the side opposite to the side on which the movable member 61 is located. The supported portion 62 protrudes outward from the outer wall 60a and has three curved surfaces 62a on its underside. The supported portion 62 is inserted into the second opening 81b of the frame main body 81, and the three curved surfaces 62a of the supported portion 62 rest on the second support portion 81b1 that constitutes the lower side of the second opening 81b, whereby the supported portion 62 of the opening / closing frame 60 is supported by the frame main body 81 of the first frame member 80. The support structure consisting of the supported portion 62 of the opening / closing frame 60 and the second support portion 81b1 of the frame main body 81 of the first frame member 80 is a support structure that allows the opening / closing frame 60 to rotate with respect to the first frame member 80. When the opening / closing frame 60 is in a horizontal position, the base of the curved surface 62a of the supported portion 62 of the opening / closing frame 60 rests on the second support portion 81b1 of the frame main body 81, and when the opening / closing frame 60 is in a position inclined relative to the horizontal plane (here, a vertical position; see Figure 10), the portion near the tip of the curved surface 62a of the supported portion 62 of the opening / closing frame 60 rests on the second support portion 81b1 of the frame main body 81.

[0044] 7 shows one supported portion 62, the opening / closing frame 60 has three supported portions 62 on the outer wall 60a of the side opposite to the side on which the movable member 61 is located. The support structure consisting of the second support portion 81b1 of the frame main body 81 of the first frame member 80 is also formed at multiple locations on the first frame member 80.

[0045] 4 and 5, the opening / closing member 100, in which the first opening / closing panel 35 and the opening / closing frame 60 are integrated, has slits (gaps) SL1 formed between each side of the first opening / closing panel 35 and each side of the opening / closing frame 60. Furthermore, a chain 70 shown in FIG. 4 is provided to prevent the opening / closing member 100 from coming off the first frame member 80 and falling.

[0046] (2-3) Size of the box member, drain pan, frame member, first opening / closing panel, and opening / closing frame 8 is a diagram for comparing the sizes of an opening / closing member 100, including the box member 31, drain pan 46, first frame member 80, first opening / closing panel 35, and opening / closing frame 60, which constitute the main body casing, as viewed from below. However, for the opening / closing member 100, the outer peripheral edge of the opening / closing frame 60 and the inner peripheral edge 81d of the frame main body 81 of the first frame member 80 face each other with a small gap between them, and it is sufficient to know the size of the inner peripheral edge of the frame main body 81. Therefore, the opening / closing member 100, including the first opening / closing panel 35 and the opening / closing frame 60, is not shown in FIG. 8. This omission is also to make it easier to grasp the outer edges of the box member 31 and the drain pan 46.

[0047] As shown in FIG. 8, the frame main body 81 has a square inner peripheral edge 81d when viewed from below, and the distance between the opposing sides of the inner peripheral edge 81d is a length W5 (mm). The box member 31 that constitutes the main body casing has a length W4 (mm) between the opposing sides of its outer peripheral edge. The drain pan 46 has a length W3 (mm) between the opposing sides of its outer peripheral edge. The relationship between these lengths is as follows: W5>W4>W3 is.

[0048] The outer edge of the opening / closing member 100, including the first opening / closing panel 35 and the opening / closing frame 60, is approximately the same size as the inner peripheral edge 81d of the frame body 81 of the first frame member 80. Therefore, the outer edge of the opening / closing member 100 in the closed state is located outside the outer edge of the drain pan 46 when viewed from below.

[0049] Because the indoor unit 30 is configured in this manner, the drain pan 46 can be accessed through the large central opening of the first frame member 80 by opening or removing the first opening / closing panel 35 and the opening / closing frame 60, and the drain pan 46 can be removed during maintenance. An example of the operation during maintenance is described below.

[0050] (2-4) Canvas material The canvas member 95 is a thick woven fabric that opens at the top and bottom. The top end of the canvas member 95 is fixed to the outside of the holding portion 32a of the air filter 39 of the bottom plate member 32. The bottom end of the canvas member 95 is connected to the top end of the inner periphery of the first frame member 80. The top and bottom openings of the canvas member 95 are both square. As shown in FIG. 4, the top opening of the canvas member 95 is smaller than the bottom opening of the canvas member 95.

[0051] (3) How to open the opening and closing parts during maintenance For example, if water leakage occurs from the indoor unit 30 due to aging or other reasons, the drain pan 46 will be inspected. In the indoor unit 30 of the air conditioning apparatus 1 of this embodiment, first, the position of the opening / closing member 100, including the first opening / closing panel 35 and the opening / closing frame 60, is changed from the horizontal position (closed position) indicated by the dotted line in FIG. 10 to the vertical position (open position) indicated by the solid line in FIG. 10 (see the two arc-shaped dotted lines in FIG. 10 ). In the closed position, a maintenance person (hereinafter referred to as a maintenance person) pulls out the tip portion 61a of the movable member 61 of the opening / closing frame 60, which is inserted into the first opening 81a of the first frame member 80, from the first opening 81a. At this time, the maintenance person supports the underside of the opening / closing member 100 near the movable member 61 of the opening / closing frame 60 with his or her hand to prevent the opening / closing member 100 from suddenly rotating. Thereafter, as the maintenance person lowers the opening / closing member 100 supported by hand, the supported portion 62 of the opening / closing frame 60 shown in Fig. 7 rotates while sliding on the second support portion 81b1 of the frame main body 81, changing the posture of the opening / closing member 100 relative to the frame main body 81. As the maintenance person lowers the opening / closing member 100 while supporting one side of the opening / closing member 100 by hand, the opening / closing member 100 rotates from the horizontal position (closed position) and finally changes its posture to the vertical position (open position) shown in Fig. 10.

[0052] In this way, by changing the posture of the opening / closing member 100 including the first opening / closing panel 35 and the opening / closing frame 60, for example, to a vertical position as shown in Figure 10, it becomes easy to perform one or more tasks required for maintenance, such as removing the air filter 39, the bottom plate member 32, the bell mouth 44, or the drain pan 46.

[0053] (4) How to remove the opening and closing parts during maintenance Furthermore, the opening / closing member 100 including the first opening / closing panel 35 and the opening / closing frame 60 can also be completely removed from the first frame member 80, rather than changing its position while still being supported by the first frame member 80.

[0054] In this case, it is necessary to either remove the safety chain 70 shown in FIG. 4 from the beginning, or to remove the chain 70 after opening the opening / closing member 100 once.

[0055] When removing the opening / closing member 100 from the first frame member 80, the tip 61a of the movable member 61 of the opening / closing frame 60 is pulled out from the first opening 81a of the first frame member 80, just as when changing the position. Next, the vicinity of the movable member 61 of the opening / closing frame 60 is slightly lifted up. The vicinity of the supported portion 62 of the opening / closing frame 60 on the opposite side is also slightly lifted up, so that the supported portion 62 of the opening / closing frame 60 is lifted off the second support portion 81b1 of the first frame member 80. In this state, the opening / closing member 100 can be shifted sideways to remove the supported portion 62 of the opening / closing frame 60 from the second opening 81b of the first frame member 80. Thereafter, by tilting the opening / closing member 100 slightly relative to the horizontal plane, the opening / closing member 100 can be lowered straight down through the central opening of the first frame member 80.

[0056] (5) Features (5-1) The indoor unit 30 of the air conditioning apparatus 1 includes a box member 31 and a bottom plate member 32 that function as a main body casing, an opening / closing member 100 including a first opening / closing panel 35 and an opening / closing frame 60, and a first frame member 80. The box member 31 and the bottom plate member 32 are installed above the air-conditioned space SP1. The box member 31 and the bottom plate member 32 house an indoor fan 43, an indoor heat exchanger 42, and a drain pan 46. An air inlet 32b is formed on the underside of the box member 31 and the bottom plate member 32. The first frame member 80 is located below the inlet 32b. The first frame member 80 includes a first support portion 81a1 and a second support portion 81b1. The first support portion 81a1 and the second support portion 81b1 are located below the box member 31 and the bottom plate member 32 and support the opening / closing member 100. The first frame member 80 and the opening / closing member 100 are configured so that the drain pan 46 can be removed into the first space US (see FIG. 10) when the opening / closing member 100 is in the open state as shown in FIG. 10. The first space US is a space below the frame main body 81 of the first frame member 80, which has the first support portion 81a1 and the second support portion 81b1.

[0057] 10, when the opening / closing member 100 is in the open state, the drain pan 46 can be removed into the first space US below the first frame member 80 having the first support portion 81a1 and the second support portion 81b1. This improves the maintainability of the indoor unit 30.

[0058] (5-2) In the indoor unit 30 of the air conditioner 1, the first support portion 81a1 and the second support portion 81b1 support a portion (the movable member 61 and the supported portion 62) of the opening / closing frame 60 of the opening / closing member 100 from below. When the opening / closing member 100 is removed during maintenance, the opening / closing member 100 is in a closed state when placed on the first support portion 81a1 and the second support portion 81b1, and in an open state when removed from the first support portion 81a1 and the second support portion 81b1. The drain pan 46 is positioned so that a portion of the drain pan 46 overlaps with the opening / closing member 100 when viewed from below when the opening / closing member 100 is in the closed state (see FIG. 4).

[0059] Here, as is clear from FIG. 4 and other figures, when the opening / closing member 100 is in the closed state (the state shown by the solid line in FIG. 4), it is impossible to remove the drain pan 46 into the first space US.

[0060] However, in the indoor unit 30, the opening and closing member 100 can be removed and the indoor unit 30 can be put into an open state, so the drain pan 46 can be removed during maintenance.

[0061] (5-3) In the indoor unit 30 of the air conditioning device 1, when the opening / closing member 100 is in the closed state shown by the solid line in Figure 4, there is a slit (gap) SL1 between the first opening / closing panel 35 of the opening / closing member 100 and the opening / closing frame 60, which connects the air-conditioned space SP1 with the intake port 32b of the bottom plate member 32.

[0062] Here, the box member 31 and bottom plate member 32 that function as the main body casing are installed behind the ceiling 90 (SP2) of the room in which the air-conditioned space SP1 is located, and the air in the air-conditioned space SP1 can be guided to the indoor fan 43 via the intake port 32b, rather than the air in the space SP2 behind the ceiling 90. This allows for efficient use of the air-conditioning capacity.

[0063] (5-4) In the indoor unit 30 of the air conditioning apparatus 1, the opening / closing member 100 supported by the first support portion 81a1 and the second support portion 81b1 of the first frame member 80 can change its position. The opening / closing member 100 is in a closed state when it is in a first position along the horizontal direction shown by the solid line in FIG. 4. The opening / closing member 100 is in an open state when it is in a second position different from the first position. In this embodiment, the position shown by the solid line in FIG. 10 is the open state of the opening / closing member 100.

[0064] As explained in (5-2) above, when the opening / closing member 100 is in the closed state (the state shown by the solid line in FIG. 4), it is impossible to remove the drain pan 46 into the first space US.

[0065] However, in the indoor unit 30, the position of the opening and closing member 100 can be changed to the open state shown by the solid line in FIG. 10, so that the drain pan 46 can be removed during maintenance.

[0066] (5-5) In the indoor unit 30 of the air conditioning apparatus 1, when the opening / closing member 100 is in the closed state, a gap G1 shown in FIG. 4 is provided between the frame main body 81 of the first frame member 80, which has the first support portion 81a1 and the second support portion 81b1, and the box member 31 and bottom plate member 32, which function as the main body casing. The provision of this gap G1 allows at least a portion of the opening / closing member 100 in the closed state to be lifted up and removed from the first support portion 81a1 and the second support portion 81b1. Furthermore, because the gap G1 is provided between the frame main body 81, which has the first support portion 81a1 and the second support portion 81b1, and the box member 31 and the bottom plate member 32, the opening / closing member 100 can be shifted from the first support portion 81a1 and the second support portion 81b1 in a bottom view, allowing the opening / closing member 100 to be removed into the first space US.

[0067] (5-6) The indoor unit 30 of the air conditioning apparatus 1 is equipped with a square tubular canvas member 95. The canvas member 95 forms an intake flow path that guides air in the air-conditioned space SP1 to the indoor fan 43. For this reason, even though the box member 31 and bottom plate member 32 that house the indoor fan 43 are located in a space slightly above and away from the air-conditioned space SP1, the canvas member 95 enables the air in the air-conditioned space SP1 to be guided to the indoor fan 43.

[0068] (5-7) In the indoor unit 30 of the air conditioning device 1, as explained above in (2-3), the outer edge of the opening / closing frame 60 of the opening / closing member 100 in the closed state is positioned outside the outer edge of the drain pan 46 when viewed from below, so that the drain pan 46 can be maintained when the opening / closing member 100 is in the open state.

[0069] Here, because the size of the opening / closing member 100 is increased, maintenance of the drain pan 46 is easy when the opening / closing member 100 is in the open state. This improves the maintainability of the indoor unit 30.

[0070] (6) Variations (6-1) Variation 1A In the above embodiment, the outer edge of the opening / closing member 100 in the closed state is positioned outside the outer edge of the drain pan 46 when viewed from below.

[0071] However, depending on the type of indoor unit, even if the outer edge of the drain pan 46 is not completely inside the outer edge of the opening and closing member, maintenance can be performed satisfactorily as long as 80% or more of the underside of the drain pan 46 is visible during maintenance. However, from the perspective of maintainability, it is preferable that at least 70% or more of the underside of the drain pan 46 is exposed when viewed from below when the opening and closing member 100 is opened.

[0072] (6-2) Variation 1B In the above embodiment, a support structure consisting of the supported portion 62 of the opening / closing frame 60 of the opening / closing member 100 and the second support portion 81b1 of the frame main body 81 of the first frame member 80 enables the opening / closing member 100 to change its posture (rotate) relative to the first frame member 80.

[0073] However, instead of this support structure, a hinge structure may be employed, or a structure in which the opening / closing member 100 is rotated and opened by a link mechanism may be employed.

[0074] (6-3) Variation 1C In the above embodiment, an opening / closing member 100 is used that integrates the first opening / closing panel 35 and the opening / closing frame 60, and a slit (gap) SL1 is provided between the first opening / closing panel 35 and the opening / closing frame 60, and air from the air-conditioned space SP1 is guided to the indoor fan 43 through the slit (gap) SL1.

[0075] However, it is also possible to draw in air from the space (installation space) SP2 behind the ceiling 90 and heat or cool it in the indoor heat exchanger 42. In this case, the opening / closing member 100 does not need to be divided into two members, and one plate-shaped member can be used as the opening / closing member.

[0076] (6-4) Variation 1D In the above embodiment, in consideration of installing the blow-out unit 55 in a location away from the indoor unit 30, the air-conditioned space SP1 is distinguished from the first space US, which is the space below the frame main body 81 of the first frame member 80. However, when the air-conditioned space SP1 and the first space US are in the same room, part of the air-conditioned space SP1 becomes the first space US. On the other hand, when there is a partition wall between the room in which the indoor unit 30 is installed and the room in which the blow-out unit 55 is installed, the first space US becomes a space separate from the air-conditioned space SP1.

[0077] (6-5) Variation 1E In the above embodiment, the box member 31 and the bottom plate member 32 that function as the main body casing are installed in the space above the ceiling (installation space) SP2, but instead of this arrangement, it is also possible to install the box member 31 and the bottom plate member 32 in the air-conditioned space SP1 below the ceiling 90 by suspending them from the ceiling 90.

[0078] (6-6) In the above embodiment, as explained in (3) and (4), it is possible to change the position of the opening / closing member 100 and also to remove the opening / closing member 100 from the first frame member 80.

[0079] However, it is also possible to adopt a simple structure in which the rotation function is removed from the supported portion 62 of the opening / closing frame 60 of the opening / closing member 100, and the supported portion 62 of the opening / closing frame 60 is simply placed on the frame main body 81. In this case, the opening / closing member 100 cannot change its position from a horizontal state to a vertical state while being supported by the first frame member 80, but as explained in (4) above, the opening / closing member 100 can be removed from the first frame member 80 during maintenance. Even if a structure is adopted in which the opening / closing member 100 can be opened by removal, it is still possible to remove the drain pan 46 into the first space US for maintenance.

[0080] (6-7) The above describes an embodiment of an indoor unit (air conditioning unit) of an air conditioner, but it will be understood that various changes in form and details are possible without departing from the spirit and scope of the present disclosure as set forth in the claims. [Explanation of symbols]

[0081] 30 Indoor unit (air conditioning unit) 31 Box material (main body casing) 32 Bottom plate member (main body casing) 32b Intake port 35 First opening and closing panel 42 Indoor heat exchanger (heat exchanger) 43 Indoor fan (fan) 46 Drain pan 60 Opening and closing frame 81 Frame body (support member) 81a1 1st support part (support part) 81b1 Second support part (support part) 95 Canvas material 100 Opening and closing member G1 Gap SP1 Air-conditioned space US space 1 [Prior art documents] [Patent documents]

[0082] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-27428

Claims

1. a main body casing (31, 32) that is installed at or above the space to be air-conditioned (SP1), that houses a fan (43), a heat exchanger (42), and a drain pan (46), and that has an air inlet (32b) formed on its underside; an opening / closing member (100) located below the suction port; a support member (81) having support portions (81a1, 81b1) positioned below the main body casing and supporting the opening / closing member; Equipped with The heat exchanger (42) has a rectangular cylindrical shape, The drain pan (46) receives condensation water from the heat exchanger (42), The support member and the opening / closing member are configured so that the drain pan can be removed into a first space (US) below the support portion when the opening / closing member is in an open state, When viewed from below, an outer edge of the opening / closing member in a closed state is located outside an outer edge of the drain pan, the open / close member is in the closed state when placed on the support part, and in the open state when removed from the support part, the drain pan is disposed so that at least a portion of the drain pan overlaps with the opening / closing member in a bottom view when the opening / closing member is in the closed state; a gap (G1) is provided between the support portion (81a1, 81b1) and the main casing (31, 32) so that the open / close member (35, 60) in the closed state can be removed from the support portion (81a1, 81b1) by lifting up at least a part of the open / close member (35, 60) and shifting the open / close member from the support portion in a bottom view, thereby allowing the open / close member to be removed into the first space; Air conditioning unit (30).

2. a main body casing (31, 32) that is installed at or above the space to be air-conditioned (SP1), that houses a fan (43), a heat exchanger (42), and a drain pan (46), and that has an air inlet (32b) formed on its underside; an opening / closing member (100) located below the suction port; a support member (81) having support portions (81a1, 81b1) positioned below the main body casing and supporting the opening / closing member; a tubular canvas member (95) extending downward from the main casing (31, 32); Equipped with The heat exchanger (42) has a rectangular cylindrical shape, The drain pan (46) receives condensation water from the heat exchanger (42), The support member and the opening / closing member are configured so that the drain pan can be removed into a first space (US) below the support portion when the opening / closing member is in an open state, When viewed from below, an outer edge of the opening / closing member in a closed state is located outside an outer edge of the drain pan, a space connecting an opening formed by the lower end of the canvas member and the opening / closing member to the air inlet of the main body casing forms an air intake flow path that guides air from the space to be air-conditioned to the fan in the main body casing; Air conditioning unit (30).

3. The canvas member has an opening at its upper end that is smaller than the opening at its lower end.

3. An air conditioning unit according to claim 2.

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