Top plate and indoor unit of air conditioner

Abstract

The utility model provides a top plate and an indoor unit of an air conditioner, wherein the top plate can achieve compactness of a packaging form during conveying and improve conveying efficiency, and the indoor unit of the air conditioner is provided with a shell comprising the top plate. The top plate constitutes a box-shaped housing that accommodates the heat exchanger and the blower. The top plate is provided with: an inner surface section facing the space side in the housing in which the heat exchanger and the blower are housed; an outer surface portion on the opposite side of the inner surface portion; and a depressed portion that depresses the inner surface portion and projects the outer surface portion. The deep drawing part is provided with a plurality of fixing parts for fixing bolts for attaching the blower to the top plate. When the inner surface parts of the two top plates are oppositely overlapped, the plurality of fixing parts of one top plate are respectively arranged at positions which do not overlap with any one of the plurality of fixing parts of the other top plate when observed from the overlapping direction of the two top plates.

Description

Technical Field

[0001] The present invention relates to a top plate and an indoor unit of an air conditioner having a housing including the top plate. Background Technology

[0002] Air conditioner indoor units are sometimes installed behind the ceiling of a building. The back of the ceiling separates the building from the interior space and exists between the ceiling and the building's roof or the floor of the upper floor. In such ceiling-recessed indoor units, for example, the unit's casing is positioned behind the ceiling, and a panel installed at the lower part of the casing protrudes into the interior space. The panel has an intake for drawing in indoor air and an outlet for blowing air into the room. Furthermore, the panel is referred to as a decorative panel, interior trim panel, etc., and is installed to enhance the interior design.

[0003] The housing of the indoor unit is mounted on the back of the ceiling, for example, by means of suspension fittings fixed to suspension bolts, which are mounted on beams on the back of the ceiling. The outer contour of the housing is box-shaped, having a space surrounded by a top plate and side plates assembled to hang down from the edges of the top plate. The top plate and side plates are formed, for example, by stamping or bending thin-walled metal sheets. Bolts are fixed to the top plate by welding, riveting, etc., for mounting a blower housed in the housing.

[0004] For example, when transporting multiple top plates, packaging is often carried out with two different top plates overlapping each other on the same side. Here, to improve the strength and durability of the thinner top plates, they are sometimes drawn into a deep shape. In this case, when two top plates are overlapped on the same side, for example, the drawn shape of one top plate may interfere with the bolts fixing it to the other top plate, and the packaging shape during transport risks expanding in the overlapping direction of the two top plates. As a result, the top plate volume is larger during transport, which risks reducing transport efficiency.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2004-84999 Utility Model Content

[0008] Technical problem to be solved by the utility model

[0009] This invention was made in view of the present situation, and its purpose is to provide a top plate that enables compact packaging during transportation and improves transportation efficiency, and an indoor unit of an air conditioner having a housing including the top plate.

[0010] Solution to the above technical problems

[0011] According to one embodiment, the top plate forms a box-shaped housing that accommodates a heat exchanger and a blower. The heat exchanger exchanges heat between indoor air and refrigerant, and the blower draws in indoor air and blows the air that has undergone heat exchange into the room. The top plate has: an inner surface portion facing the space accommodating the heat exchanger and the blower within the housing; an outer surface portion opposite to the inner surface portion; and a drawn portion that recesses the inner surface portion and protrudes the outer surface portion. A plurality of fixing portions are provided in the drawn portion for securing bolts that mount the blower to the top plate. When two top plates overlap their respective inner surfaces, the fixing portions of one top plate are positioned such that they do not overlap with any of the fixing portions of the other top plate when viewed from the overlapping direction of the two top plates. Attached Figure Description

[0012] Figure 1 This is a perspective view of the indoor unit of the ceiling-embedded air conditioner according to this embodiment, viewed from the indoor side.

[0013] Figure 2 This is a perspective view of the indoor unit of the ceiling-embedded air conditioner according to this embodiment, viewed from the back side of the ceiling.

[0014] Figure 3 It is shown Figure 2 A three-dimensional view of the cross-section at the specified plane of the indoor unit shown.

[0015] Figure 4 It is shown Figure 2 The cross-sectional view of the specified plane of the indoor unit shown.

[0016] Figure 5 This is a perspective view showing the top plate of the housing of the indoor unit of the ceiling-recessed air conditioner according to this embodiment, from both the inner and outer surface sides.

[0017] Figure 6 It is shown Figure 5 A three-dimensional view of the cross-section at the specified plane of the top plate shown.

[0018] Figure 7 This is a diagram that schematically illustrates the packaging configuration of the two top plates involved in this embodiment.

[0019] Figure 8 It is a general description of becoming as follows Figure 7 A diagram showing the state of the various fixing parts in the two top plates of the package configuration shown.

[0020] Figure 9 This is a perspective view showing, schematically from the outer surface side of the top plate, the vicinity of the drawn portion of the top plate in the packaging form involved in the variation of this embodiment. Detailed Implementation

[0021] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The indoor unit of the air conditioner is embedded in the ceiling of a building and is connected to an outdoor unit, such as one installed on the roof of a building, via pipes to form a refrigeration cycle, thereby regulating the indoor air of the building.

[0022] Figures 1 to 4 The configuration of the indoor unit of the air conditioner according to this embodiment is shown. Figure 1 This is a three-dimensional view of the indoor unit of a ceiling-embedded air conditioner, viewed from the indoor side. Figure 2 Viewed from the back side of the ceiling Figure 1 The diagram shows a three-dimensional view of the interior unit. Figure 3 It is shown Figure 2 A three-dimensional view of the cross-section at the specified plane of the indoor unit shown. Figure 4 It is shown Figure 2 The cross-sectional view of the specified plane of the indoor unit shown. Figure 3 and Figure 4 The defined plane in the text is, for example, a plane along the vertical direction.

[0023] like Figures 1 to 4 As shown, the indoor unit 1 of the air conditioner has a main body 2 installed on the back of the ceiling and a panel (hereinafter referred to as decorative panel) 3 installed on the lower end of the main body 2 as the main components.

[0024] The decorative panel 3 is positioned along the ceiling (not shown) of the air-conditioned space, covering the opening at the lower end of the housing 4 from the indoor side. The decorative panel 3 includes a grille (hereinafter referred to as an intake grille) 80 and a frame 81.

[0025] The intake grille 80 is located in the center of the decorative panel 3 and is a component that is rotatably supported on the frame 81 and covers the intake port 87 that draws indoor air into the housing 4. The intake grille 80 has a generally square outer frame portion 82 and a grid portion 83 surrounded by the outer frame portion 82. The grid portion 83 is located directly below the blower 10.

[0026] The frame 81 of the decorative panel 3 is a generally square element surrounding the intake grille 80, having first to fourth sides 85a, 85b, 85c, 85d and four corners 86a, 86b, 86c, 86d. An intake port 87 is defined by a quadrilateral area surrounded by the inner periphery of the first to fourth sides 85a, 85b, 85c, 85d. The decorative panel 3 is detachably connected to the housing 4 at the four corners 86a, 86b, 86c, 86d of the frame 81. Thus, the lower end of the unit body 2 is covered by the decorative panel 3.

[0027] The decorative panel 3 has four air outlets 88 that blow air that has undergone heat exchange in the heat exchanger into the room. The air outlets 88 are formed on the first to fourth sides 85a, 85b, 85c, and 85d of the frame 81.

[0028] Four gratings 89 are rotatably supported on the frame 81 of the decorative panel 3. Each grating 89 is a component that changes the direction of airflow from the outlet 88 into the room, and is formed into a flat, elongated plate. The gratings 89 are rotatable between a closed position (closing the outlet 88) and an open position (tilted to open the outlet 88). When the gratings 89 are rotated to the closed position, the four gratings 89 are horizontal, completely covering the first to fourth sides 85a, 85b, 85c, and 85d of the frame 81.

[0029] The main body 2 has a shell 4. The shell 4 is configured as a box shape with an opening facing the interior, and is suspended from a beam on the back of the ceiling, for example, by a plurality of suspension bolts (not shown).

[0030] The housing 4 has a thin plate-shaped top plate 4a and side plates 4b made of metal plates or the like. In the example shown, the top plate 4a is slightly smaller than the roughly square decorative panel 3, and has a roughly octagonal planar shape obtained by obliquely cutting off portions corresponding to the corners of the decorative panel 3. The planar shape is formed by the outline of the top plate 4a when viewed from the vertical direction. The side plates 4b have eight faces as main faces to surround the top plate 4a.

[0031] Among them, the 1st, 3rd, 5th, and 7th facets 41b, 43b, 45b, and 47b are facets along the four sides of the decorative panel 3, and the 2nd, 4th, 6th, and 8th facets 42b, 44b, 46b, and 48b are facets along the edges obtained by obliquely cutting off the parts corresponding to the corners of the decorative panel 3. The inner surfaces of the top plate 4a and the side plates 4b (facets 1 to 8 41b to 48b) are covered, for example, with a heat-insulating material 4c made of expanded polystyrene.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, a blower 10 and a heat exchanger 11 are housed inside the housing 4.

[0033] The blower 10 draws in air from the air-conditioned space, i.e., the room, and blows the air, which has undergone heat exchange by the heat exchanger 11, out of the room. The blower 10 uses a centrifugal fan that draws in air axially and blows it circumferentially. The blower 10 has a fan motor 10a and a fan section 10b. The fan motor 10a is fixed to the top plate 4a of the housing 4 by bolts 14, causing the rotating shaft 10c to rotate. The fan section 10b has a plurality of blades 10d arranged circumferentially at predetermined intervals, which are concentrically mounted to the front end of the rotating shaft 10c and rotate together with the rotating shaft 10c.

[0034] The heat exchanger 11 performs heat exchange between the air and refrigerant in the air-conditioned space, i.e., the indoor space, thereby conditioning the indoor air. The heat exchanger 11 is configured to surround the outlet side of the blower 10 within the housing 4. The heat exchanger 11 includes multiple heat dissipation fins 12 and multiple heat transfer pipes 13 for refrigerant flow. Each heat dissipation fin 12 is positioned along the height of the housing 4 (…). Figure 4 The elongated plates extending in the vertical direction are arranged at intervals around the perimeter of the housing 4. The heat transfer tubes 13 are arranged at intervals in both the height direction and the transverse direction (perpendicular to the height direction) of the housing 4. Furthermore, the heat transfer tubes 13 are thermally connected to the heat dissipation fins 12 by passing through them.

[0035] The end of the heat transfer pipe 13, which is connected to the heat exchanger 11, is disposed in the space between the fourth facet 44b in the side plate 4b of the housing 4 and the heat exchanger 11, and is connected to a pair of connection ports 13a and 13b via manifolds and connecting pipes (not shown). Connection ports 13a and 13b protrude outward from the housing 4 from a portion of the fourth facet 44b that is recessed, and are connected to the outdoor unit (not shown) of the air conditioner via liquid pipes and gas pipes (not shown).

[0036] Next, the top plate 4a of the housing 4 involved in this embodiment will be further described.

[0037] Figure 5 This is a perspective view of the top plate 4a shown from both the inner and outer surface sides. Figure 6 It is shown in general terms. Figure 5 A three-dimensional view of the cross-section at the specified plane of the top plate 4a shown. Figure 6 The defined plane in the text is, for example, a plane along the vertical direction.

[0038] like Figure 5 and Figure 6As shown, the top plate 4a has a generally octagonal planar shape. The top plate 4a has eight edges that connect to the eight faces (faces 1 to 8, 41b to 48b) of the side plate 4b. The first, third, fifth, and seventh edges 41a, 43a, 45a, and 47a are edges along the four sides of the decorative panel 3, and connect to the first, third, fifth, and seventh faces 41b, 43b, 45b, and 47b of the side plate 4b (see reference). Figures 1 to 4 The 2nd, 4th, 6th, and 8th edge portions 42a, 44a, 46a, and 48a are edges obtained by obliquely cutting off the edges corresponding to the corners of the decorative panel 3, and are connected to the 2nd, 4th, 6th, and 8th face portions 42b, 44b, 46b, and 48b of the side panel 4b. The face portion 49a surrounded by these eight edge portions (1st to 8th edge portions 41a to 48a) constitutes the bottom of the box-shaped shell 4. The eight edge portions (1st to 8th edge portions 41a to 48a) hang down from the face portion 49a in a manner that overlaps with the face portions (1st to 8th face portions 41b to 48b) that connect to these edge portions.

[0039] In addition, in the example shown, the planar shape of the top plate 4a is approximately octagonal, but it can also be any planar shape as long as it can be connected to each facet of the side plate 4b and together with these faces, form the shell 4 into a box shape.

[0040] The top plate 4a has a drawn portion 60 on its surface 49a. The drawn portion 60 is a concave-convex portion of the surface 49a, for example, a portion in which the inner surface portion 71 of the top plate 4a is recessed and correspondingly the outer surface portion 72 of the top plate 4a protrudes. The inner surface portion 71 of the top plate 4a is the surface facing the space housing the heat exchanger 11 and the blower 10 in the housing 4 formed by the top plate 4a, corresponding to one side of the surface 49a. On the other hand, the outer surface portion 72 of the top plate 4a is the surface facing the opposite side to the inner surface portion 71, corresponding to the other side of the surface 49a. For example, when the housing 4 is suspended from the beam behind the ceiling, the inner surface portion 71 of the top plate 4a of the housing 4 faces the interior side, and the outer surface portion 72 faces the back of the ceiling side.

[0041] Thus, the drawn portion 60 is the concave portion of the inner surface portion 71 and the convex portion of the outer surface portion 72. In other words, as described later... Figure 7 As shown, when the inner surface portions 71 of a top plate 4a having the drawn portion 60 and a top plate 4a different from the top plate 4a are overlapped relative to each other, the drawing portion 60 increases the opposing distance (the distance between the inner surface portions 71) of the different top plate 4a. That is, when the inner surface portions 71 of the two top plates 4a are overlapped relative to each other, the drawing portion 60 of these top plates 4a is a concave portion of the inner surface portion 71 that increases the opposing distance of the two top plates 4a, and a convex portion of the outer surface portion 72.

[0042] exist Figure 5 and Figure 6 In the example shown, when viewed in a direction perpendicular to the face 49a (vertical direction in each figure), the drawn portion 60 is positioned approximately at the center of the face 49a, specifically at the top plate 4a. Furthermore, when viewed in a direction perpendicular to the face 49a, the four corner portions 62, 64, 66, and 68 of the drawn portion 60 curve and bulge, forming a continuous profile shape between these corner portions 62, 64, 66, and 68 via four edges 61, 63, 65, and 67. The edges 61, 63, 65, and 67 are correspondingly positioned to correspond with the edges 41a, 43a, 45a, and 47a of the top plate 4a. The corner portions 62, 64, 66, and 68 are correspondingly positioned to correspond with the edges 42a, 44a, 46a, and 48a of the top plate 4a. Side 61 is continuous in a straight line between corners 62 and 68, and side 65 is continuous in a straight line between corners 64 and 66. In contrast, side 63 is continuous in a curved, concave manner between corners 62 and 64, and side 67 is continuous in a curved, concave manner between corners 66 and 68.

[0043] In addition to the drawn portion 60, the top plate 4a also has multiple drawn portions surrounding the drawn portion 60. As an example in this embodiment, such as... Figure 6 As shown, the innermost drawing portion 60 (hereinafter also referred to as the first drawing portion 60a) is surrounded by eight (hereinafter referred to as the second to ninth drawing portions 60b, 60c, 60d, 60e, 60f, 60g, 60h, and 60i), totaling nine drawing portions. The second drawing portion 60b, the fourth drawing portion 60d, the seventh drawing portion 60g, and the ninth drawing portion 60i are convex portions of the inner surface portion 71 and concave portions of the outer surface portion 72. The third drawing portion 60c, the fifth drawing portion 60e, the sixth drawing portion 60f, and the eighth drawing portion 60h are concave portions of the inner surface portion 71 and convex portions of the outer surface portion 72.

[0044] like Figure 6 As shown, adjacent drawing sections are continuous with each other via continuous sections 60j, 60k, 60l, 60m, 60n, 60o, 60p, and 60q, which are inclined at a section along a predetermined plane perpendicular to the face 49a.

[0045] like Figure 5 As shown, a plurality of fixing parts 90 are provided in the drawing section 60 (first drawing section 60a), which fix bolts 14 for mounting the blower 10 to the top plate 4a. The bolts 14 position the head 14a on the outer surface 72 side and the shaft portion 14b on the inner surface 71 side, for example, by welding, riveting, or other means, to the fixing parts 90. Figure 4As shown, the fan motor 10a is fixed to the bolt 14, for example, by a washer 15 and a nut 16, thereby the blower 10 is mounted on the top plate 4a.

[0046] like Figure 5 and Figure 6 As shown, the fixing part 90 is configured such that the inner surface portion 71 of the drawn portion 60 protrudes, and the outer surface portion 72 of the drawn portion 60 is recessed. That is, the fixing part 90 is a protrusion of the inner surface portion 71 and a recess of the outer surface portion 72. In the example shown, the fixing part 90 is shaped such that the outer surface portion 72 is recessed in a frustum-shaped manner (in other words, the inner surface portion 71 protrudes in a frustum-shaped manner). By recessing the outer surface portion 72 in the fixing part 90 in this way, the head 14a of the bolt 14 can be embedded in the recess. Thus, as Figure 5 As shown, the head 14a of the bolt 14 will not protrude more from the drawn portion 60, specifically from the face 49a of the top plate 4a than from the outer face 72.

[0047] like Figure 5 and Figure 6 As shown, three fixing parts 91, 92, and 93 are provided on the top plate 4a. However, their number is not limited to this. The top plate 4a is positioned along a predetermined axis C (refer to...). Figure 5 When rotating by a predetermined angle around the center and reversing the vertical direction, the three positions of the fixed parts 91, 92, and 93 after rotation and reversal do not overlap with any of the fixed parts 91, 92, and 93 before rotation and reversal. The shaft C can be, for example, a shaft that passes through the center of gravity of the top plate 4a in a vertical direction, or a shaft concentric with the rotation shaft 10c of the blower 10. Reversing the vertical direction means flipping the top plate 4a so that both the inner surface 71 and the outer surface 72 face in opposite directions.

[0048] In this embodiment, such as Figure 5 As shown, the top plate 4a is rotated and reversed vertically by overlapping the first edge 41a and the fifth edge 45a, the second edge 42a and the fourth edge 44a, the third edge 43a and the third edge 43a, the fourth edge 44a and the second edge 42a, the fifth edge 45a and the first edge 41a, the sixth edge 46a and the eighth edge 48a, the seventh edge 47a and the seventh edge 47a, the eighth edge 48a and the sixth edge 46a in a direction perpendicular to the face 49a. At this time, the three positions of the fixed parts 91, 92 and 93 after rotation and reversal do not overlap with any position of the fixed parts 91, 92 and 93 before rotation and reversal when viewed in the vertical direction, that is, the overlapping direction of the top plate 4a.

[0049] In this case, such as Figure 5As shown, the rotated top plate 402 is in a state where the original top plate 401 has rotated 180° around axis C. Furthermore, the top plate 402 after being rotated vertically is in a state where the inner surface portion 71 of the original top plate 401 is opposite to the inner surface portion 71 of the original top plate 402. In this state, the three positions of the rotating and vertically reversed fixing portions 91, 92, and 93 do not overlap with any of the original fixing portions 91, 92, and 93 when viewed in the overlapping direction of the top plates 401 and 402. Furthermore, if they do not overlap, the rotation angle of the top plate 402 around axis C does not necessarily have to be 180°.

[0050] That is, the three fixing parts 91, 92, and 93 are respectively arranged in the drawn portion 60 of the top plate 4a in such a way that the outline shape connecting these fixing parts 91, 92, and 93 is not point-symmetric with respect to a point on axis C. This outline shape is the trajectory connecting the center points of the fixing parts 91, 92, and 93 as viewed from the vertical direction; in other words, it is the trajectory connecting the center of the axis of the shaft portion 14b of the bolt 14. In the example of the fixing parts 91, 92, and 93, their outline shapes are triangular.

[0051] For example, when conveying multiple top plates 4a in this configuration, they are conveyed in two different states where their respective inner surface portions 71 are overlapped relative to each other. In this embodiment, of the two top plates, one top plate 4a is positioned relative to the other top plate 4a along a predetermined axis (for example, Figure 5 The axes shown (C) are rotated around the center by a specified angle (180° for example) and reversed vertically, overlapping each other with their respective inner surface portions 71 facing each other to form a set. Next, the state in which the two top plates 4a are thus formed as a set (hereinafter referred to as the packaging form) will be described.

[0052] Figure 7 This is a diagram that roughly shows the packaging configuration of the two top plates 4a (401, 402). Figure 8 It is a general description of becoming as follows Figure 7 A diagram showing the state of the area near the various fixing parts 90 (91, 92, 93) in the two top plates 4a (401, 402) of the package shown.

[0053] exist Figure 7 In the example shown, Figure 5 The top plates 401 and 402 shown overlap each other with their inner surface portions 71. Figure 7In the packaging configuration shown, the fourth edge 44a of the top plate 401 contacts the second edge 42a of the top plate 402, the fifth edge 45a of the top plate 401 contacts the first edge 41a of the top plate 402, and the sixth edge 46a of the top plate 401 contacts the eighth edge 48a of the top plate 402. Although the illustration is omitted, Figure 7 In the packaging configuration shown, similarly, the first edge 41a of the top plate 401 is in contact with the fifth edge 45a of the top plate 402, the second edge 42a of the top plate 401 is in contact with the fourth edge 44a of the top plate 402, the third edge 43a of the top plate 401 is in contact with the third edge 43a of the top plate 402, the seventh edge 47a of the top plate 401 is in contact with the seventh edge 47a of the top plate 402, and the eighth edge 48a of the top plate 401 is in contact with the sixth edge 46a of the top plate 402.

[0054] These edges are not specifically joined together, but rather in a mating state. However, the two top plates 401 and 402 can be integrated by temporarily fixing them while the edges are mated together.

[0055] like Figure 8 As shown, forming Figure 7 In the packaging configuration shown, the fixing portions 91, 92, and 93 of the top plates 401 and 402 are positioned relative to each other. As described above, these three fixing portions 91, 92, and 93 position the top plate 402 relative to the top plate 401 at axis C (see reference). Figure 5 When the top plate 402 is rotated 180° around the center and its top and bottom are reversed, the three positions of the fixing parts 91, 92, and 93 of the top plate 402 do not overlap with any position of the fixing parts 91, 92, and 93 of the top plate 401 when viewed in the overlapping direction of the top plates 401 and 402.

[0056] Therefore, as Figure 8 As shown, the bolts 14 fixed to the fixing parts 91, 92, and 93 of the top plate 401 and the bolts 14 fixed to the fixing parts 91, 92, and 93 of the top plate 402 do not interfere with each other. That is, the shaft portions 14b of these bolts 14 do not contact the shaft portions 14b of other bolts 14.

[0057] Furthermore, the top plates 401 and 402 each have a drawn portion 60 that increases the opposing distance between them (the distance between the inner surface portions 71). Fixing portions 91, 92, and 93 are provided on the drawn portions 60 that thus increase the opposing distance between the top plates 401 and 402. Therefore, because the opposing distance between the top plates 401 and 402 is increased by the drawn portion 60, the ends 14c of the bolts 14 of the fixing portions 91, 92, and 93 fixed to the top plate 401 do not contact the drawn portion 60 of the top plate 402. Similarly, the ends 14c of the bolts 14 of the fixing portions 91, 92, and 93 fixed to the top plate 402 do not contact the drawn portion 60 of the top plate 401.

[0058] Thus, according to this embodiment, the shaft portion 14b and end portion 14c of the bolt 14 fixing portion 90 of one top plate 4a will not interfere with the shaft portion 14b and end portion 14c of the bolt 14 fixing portion 90 of the other top plate 4a, and the two top plates 4a form a set in the packaging configuration. Therefore, it is possible to suppress the expansion of the packaging configuration of these top plates 4a in the overlapping direction. As a result, it is possible to achieve a compact packaging configuration of the top plates 4a during transportation and improve transportation efficiency.

[0059] Here, for example, depending on the length of the shaft portion 14b of the bolt 14 fixed to the fixing portion 90, the end portion 14c of the bolt 14 sometimes contacts the drawn portion 60 of the other of the two top plates 4a that form a set in the packaging form. Figure 9 A variation of this embodiment considering this situation is shown. In this variation, it is the same as the embodiment described above, except for the differences described below. Therefore, for the differences, the same reference numerals are used in the drawings and reference is made appropriately to the embodiment described above, and the description is omitted.

[0060] Figure 9 This is a perspective view, schematically shown from the outer surface side of the top plate, near the drawn portion of one of the two top plates forming a set in the packaging configuration. (See image.) Figure 9 As shown, the top plate 40a has a plurality of holes 100 in the drawn portion 60 (first drawn portion 60a). The holes 100 extend the drawn portion 60 from the outer surface portion 72 to the inner surface portion 71 (see reference). Figure 8 The diameter of the hole 100 is larger than the diameter of the shaft portion 14b and the end portion 14c of the bolt 140. In the example shown, three holes 101, 102, and 103 are provided on the top plate 40a.

[0061] These holes 101, 102, and 103 are positioned to overlap with the positions of the bolts 140 fixing the top plate to which it is fixed when viewed in the overlapping direction of the top plates. This top plate is one of a set of top plates in a packaged form. That is, when the top plate 40a is aligned with a predetermined axis (for example,...), Figure 5 When the shaft C shown is rotated by a specified angle, such as 180°, and the top and bottom are reversed, the holes 101, 102, and 103 are arranged in a corresponding position to the fixed parts 91, 92, and 93 after the rotation and reversal.

[0062] That is, when the top plate that forms a group with the top plate 40a in the packaging form is rotated 180° about axis C relative to the top plate 40a and reversed vertically, when viewed in the overlapping direction of the top plates, holes 101, 102, and 103 are arranged at positions that overlap with the three fixing parts of the top plate.

[0063] Therefore, when the top plate 40a is formed into a package with other identical top plates, when viewed in the overlapping direction of the top plates, the holes 101, 102, and 103 of the top plate 40a can overlap with the bolts 140 of the other top plates. Thus, even if the bolt 140 has a shaft portion 14b that contacts the drawn portion 60 of the top plate 40a at its end 14c in the packaged form, the shaft portion 14b and end 14c of the bolt 140 can pass through the holes 101, 102, and 103. That is, contact between the end 14c of the bolt 140 and the drawn portion 60 of the top plate 40a can be avoided; in other words, interference between the end 14c of the bolt 140 and the drawn portion 60 of the top plate 40a can be prevented. Therefore, the expansion of the packaged form in the overlapping direction of the top plates can be suppressed, and a compact packaged form can be achieved during transportation.

[0064] The above description describes several embodiments of this utility model, but these embodiments are provided as examples and are not intended to limit the scope of the utility model. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the utility model. These embodiments and their variations are included in the scope and spirit of the utility model, and are included within the scope of the claims and their equivalents.

[0065] Explanation of reference numerals in the attached figures

[0066] 1. Indoor unit of air conditioner

[0067] 2-unit main body

[0068] 3-panel (ceiling panel)

[0069] 4 housings

[0070] Top plates of 4a, 401, 402, and 40a

[0071] 4b side panel

[0072] 4C thermal insulation material

[0073] 10 blowers

[0074] 10A fan motor

[0075] 10b fan section

[0076] 10c rotating shaft

[0077] 10d blade

[0078] 11 heat exchangers

[0079] 12 heat sink fins

[0080] 13 heat transfer tubes

[0081] 13a and 13b connection ports

[0082] 14, 140 bolts

[0083] 14a bolt head

[0084] Shaft portion of 14b bolt

[0085] The end of the 14c bolt

[0086] 15 Washers

[0087] 16 nuts

[0088] 41a First edge

[0089] 42a Second Edge

[0090] 43a 3rd margin

[0091] 44a 4th margin

[0092] 45a Fifth border

[0093] 46a 6th margin

[0094] 47a, 7th rim

[0095] 48a, 8th rim

[0096] 49a face

[0097] 41b First face

[0098] 42b Second face

[0099] 43b Third face

[0100] 44b Fourth face

[0101] 45b Fifth face

[0102] 46b Sixth face

[0103] 47b Seventh face

[0104] 48b Eighth face

[0105] 60 Deep drawing section

[0106] 60a First Deep Drawing Section

[0107] 60b Second Deep Drawing Section

[0108] 60c third deep drawing section

[0109] 60d fourth deep drawing section

[0110] 60e Fifth Deep Drawing Section

[0111] 60f 6th deep drawing section

[0112] 60g 7th deep drawing section

[0113] 60h 8th deep drawing section

[0114] 60i 9th deep drawing section

[0115] Continuous sections 60j, 60k, 60l, 60m, 60n, 60o, 60p, 60q

[0116] Edges 61, 63, 65, and 67

[0117] 62, 64, 66, 68 corners

[0118] 71 Inner Surface

[0119] 72 External Facial Features

[0120] 80 grille (intake grille)

[0121] 81 frame

[0122] 82 outer frame

[0123] 83 Grid Department

[0124] 85a First side

[0125] 85b second side

[0126] 85c third side

[0127] 85d fourth side

[0128] Corner sections 86a, 86b, 86c, and 86d

[0129] 87 suction port

[0130] 88 blowout

[0131] 89 grid

[0132] Fixed parts 90, 91, 92, 93

[0133] Holes 100, 101, 102, and 103

[0134] C-axis.

Claims

1. A top plate, comprising a box-shaped housing for a heat exchanger and a blower, wherein the heat exchanger performs heat exchange between indoor air and refrigerant, and the blower draws in indoor air and blows the air that has undergone heat exchange by the heat exchanger out of the room, characterized in that, The top plate has: an inner surface portion facing the space accommodating the heat exchanger and the blower within the housing; an outer surface portion opposite to the inner surface portion; and a drawn portion that recesses the inner surface portion and protrudes the outer surface portion. The drawing section is provided with multiple fixing parts, which secure the bolts that mount the blower to the top plate. When the inner surface portions of the two top plates overlap relative to each other, the plurality of fixing portions of one top plate are respectively arranged in a position that does not overlap with any of the plurality of fixing portions of the other top plate when viewed from the overlapping direction of the two top plates.

2. The top plate as described in claim 1, characterized in that, For the plurality of fixing parts, when the top plate of the other side is rotated by a predetermined angle about a predetermined axis along the overlapping direction of the two top plates and the inner surface portions of the two top plates are relatively overlapped, the plurality of fixing parts of the top plate of the other side are respectively arranged in a position that does not overlap with any of the plurality of fixing parts of the top plate of the other side when viewed from the overlapping direction of the two top plates.

3. The top plate as described in claim 2, characterized in that, The plurality of fixing portions are configured to make the inner surface portion of the drawing portion protrude and the outer surface portion recessed.

4. The top plate as described in any one of claims 1 to 3, characterized in that, The drawn portion has a plurality of holes extending from the inner surface portion to the outer surface portion. When the inner surface portions of the two top plates overlap each other, the plurality of holes of one top plate are respectively arranged at a position that overlaps with any one of the bolts of the plurality of fixing portions fixed to the other top plate when viewed from the overlapping direction of the two top plates.

5. The top plate as described in claim 4, characterized in that, The drawing section has three or more fixing parts. Each of the three or more fixed parts is fixed with one bolt.

6. The top plate as described in claim 5, characterized in that, The drawing section is provided with three fixing parts. When the bolt fixed to the fixing part is viewed from the overlapping direction of the two top plates, the shape of the trajectory connecting the positions of the bolt's axis is triangular.

7. An indoor unit of an air conditioner, characterized by comprising: have: The heat exchanger; The blower; The housing is configured as a box shape with an opening facing the interior, housing the heat exchanger and the blower, and having a top plate as described in claim 6.

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