High-rigidity plate and air-conditioning apparatus

[0015] Exemplary embodiments of the present invention are disclosed below. The configuration of the embodiment described below and the operation and effects achieved by the configuration are merely exemplary. The present invention can be implemented with configurations other than those disclosed herein. In addition, the present invention can achieve at least one of various effects (including secondary effects) obtained by this configuration.

[0016] In each figure, directions are defined for convenience. The X direction, Y direction, and Z direction intersect each other. In this specification, serial numbers are used to distinguish parts or components from each other, and do not indicate order or preference.

[0017] figure 1 It is an exemplary schematic perspective view of the air conditioning apparatus 10 in the embodiment. figure 2 It is an exemplary schematic cross-sectional view of the air conditioning apparatus 10 in the embodiment.

[0018] figure 1 and figure 2 The illustrated air conditioning device 10 is configured as a so-called box-type indoor unit installed at the ceiling (not shown) of a building. The air conditioning equipment 10 and an outdoor unit (not shown) provided outside the building constitute an air conditioning system that performs cooling and heating.

[0019] The air conditioning equipment 10 includes a housing 11, a heat exchanger 12 ( figure 2 ) And fan 13 ( figure 2 ). The heat exchanger 12 and the ventilator 13 are housed inside the housing 11. As used in the following description, the term “vertical direction” means the vertical direction (the Z direction and the direction opposite to the Z direction) of the housing 11 (air conditioning apparatus 10).

[0020] The housing 11 is formed in a substantially rectangular shape. The housing 11 includes a base 20 and a decorative panel 21. The base 20 includes an upper top wall 22 and a cylindrical portion 23. The base 20 is formed of, for example, a metal material such as iron and stainless steel. Noticed that figure 2 The housing 11 is schematically shown.

[0021] The upper top wall 22 extends along the X-Y plane. Specifically, the upper top wall 22 extends in a direction intersecting the Z direction (first direction). The upper top wall 22 is made by stamping a single sheet blank. The upper top wall 22 will be described in detail later. The upper top wall 22 is also referred to as a plate or top plate. The upper top wall 22 is an exemplary high-rigidity board. The Z direction is an exemplary first direction.

[0022] The cylindrical portion 23 extends downward (in the direction opposite to the Z direction) from the outer edge 22a of the upper top wall 22. The cylindrical portion 23 is fixed to the frame of the building. The fixing of the cylindrical portion 23 results in the housing 11 being fixed to the frame of the building. The cylindrical portion 23 is also called a plate portion or a peripheral portion.

[0023] The decorative panel 21 is fixed to the cylindrical portion 23 in a state where the decorative panel 21 covers the opening in the lower end portion of the cylindrical portion 23. The decorative panel 21 has an air inlet 21a ( figure 1 ) And outlet 21b ( figure 1 ). The air inlet 21a is provided at the central part of the decorative panel 21. The air inlet 21a has a plurality of slits and generally has a rectangular shape. A plurality of air outlets 21b each having an elongated rectangular shape is provided around the air inlet 21a to surround the air inlet 21a. The air inlet 21a and the air outlet 21b pass through the decorative panel 21 so that the inside and the outside of the housing 11 communicate with each other. Specifically, the housing 11 is configured to allow air to flow into and out of the housing 11 through the air inlet 21a and the air outlet 21b. The decorative panel 21 is also called a bottom wall or floor.

[0024] See now figure 2. The heat exchanger 12 is formed in a rectangular tube shape extending in the vertical direction so as to surround the ventilator 13. The heat exchanger 12 is connected to a compressor or an outdoor heat exchanger installed in the outdoor unit via a refrigerant pipe, for example. The heat exchanger 12 and the compressor or outdoor heat exchanger constitute a refrigeration cycle. In the heat exchanger 12, heat exchange is performed between the indoor air delivered by the fan 13 and the refrigerant flowing through the heat exchanger 12.

[0025] Such as figure 2 As shown, the ventilator 13 includes a motor 30 and a fan 31. The motor 30 includes a housing 30a and a rotating shaft 30b. The shell 30a is fixed to the upper top wall 22. The rotating shaft 30b is rotatably supported about the central axis Ax by the housing 30a and extends downward from the housing 30a. The center axis Ax extends in the vertical direction. When power is supplied to the motor 30, the rotating shaft 30b rotates. The motor 30 is an exemplary vibration transmission member that transmits vibration generated by the fan 31.

[0026] The fan 31 is fixed to the rotating shaft 30b of the motor 30 and rotates integrally with the rotating shaft 30b about the central axis Ax. The fan 31 is an exemplary vibration source that generates vibration. The motor 30 as a vibration transmission member and the fan 31 as a vibration source that generates vibration are collectively referred to as a vibration member. The fan 31 is configured as a turbofan that sucks air in the axial direction along the center axis Ax and blows out the air in the radial direction with respect to the center axis Ax. The heat exchanger 12 is disposed on the outside in the radial direction with respect to the center axis Ax of the fan 31 so that the fan 31 can be surrounded by the heat exchanger 12. When the fan 31 is driven by the motor 30, the fan 30 blows the air drawn into the housing 11 from the air inlet 21a to the outside of the housing 11 through the heat exchanger 12.

[0027] With the foregoing configuration, during the refrigeration cycle operation, indoor air is drawn into the housing 11 by the ventilator via the air inlet 21a. The air sucked into the housing 11 passes through the heat exchanger 12. Heat exchange is performed between the refrigerant in the heat exchanger 12 and the air passing through the heat exchanger 12. In the case of the cooling operation, the air is cooled and blown out from the air outlet 21b. In the case of the heating operation, air is heated and blown out from the air outlet 21b.

[0028] The upper top wall 22 is described in detail below. image 3 It is an exemplary schematic perspective view of the upper top wall 22 of the air conditioning device 10 in the embodiment. Figure 4 It is an exemplary schematic bottom view of the upper top wall 22 of the air conditioning device 10 in the embodiment. Figure 5 Is along Figure 4 A cross-sectional view taken at the line V-V. Image 6 Is along Figure 4 The cross-sectional view taken from the line VI-VI.

[0029] Such as image 3 with Figure 4 As shown, the upper top wall 22 has an outer surface 22b and an inner surface 22c. The outer edge 22a of the upper top wall 22 has four sides 22aa to 22ad and four connecting portions 22ae to 22ah. The outer surface 22b is also referred to as the upper surface. The inner surface 22c is also referred to as the lower surface.

[0030] The sides 22aa and 22ac extend linearly along the X direction. The sides 22aa and 22ac are spaced apart from each other in the Y direction so that the base 20 has a central portion disposed between the sides 22aa and 22ac. The sides 22aa and 22ac extend substantially parallel to each other.

[0031] The sides 22ab and 22ad extend linearly along the Y direction. The sides 22ab and 22ad are spaced apart from each other in the X direction, so that the base 20 has a central portion disposed between the sides 22ab and 22ad. The sides 22ab and 22ad extend substantially parallel to each other.

[0032] The four connecting portions 22ae to 22ah connect the corresponding four sides 22aa to 22ad together. The connecting portion 22ae linearly extends between the end of the side 22aa in the X direction and the end of the side 22ab in the Y direction. The connecting portion 22ae is inclined with respect to the X direction and the Y direction.

[0033] The connecting portion 22af linearly extends between the end of the side 22ab in the direction opposite to the Y direction and the end of the side 22ac in the X direction. The connecting portion 22af is inclined with respect to the X direction and the Y direction.

[0034] The connecting portion 22ag linearly extends between the end of the side 22ac in the direction opposite to the X direction and the end of the side 22ad in the direction opposite to the Y direction. The connecting portion 22ag is inclined with respect to the X direction and the Y direction.

[0035] The connecting portion 22ah extends stepwise between the end of the side 22ad in the Y direction and the end of the side 22aa in the direction opposite to the X direction. The connecting portion 22ah includes three straight portions 22ai to 22ak. The straight portion 22ai linearly extends from the end of the side 22ad in the Y direction and is inclined with respect to the X direction and the Y direction. The straight portion 22aj linearly extends in the Y direction from the end of the straight portion 22ai in the X direction. The straight portion 22ak is linearly provided between the end of the straight portion 22aj in the Y direction and the end of the side 22aa in the direction opposite to the X direction. The linear portion 22ak is inclined with respect to the X direction and the Y direction. Note that the connecting portion 22ah extends stepwise in this embodiment, but it is not limited to this shape. As long as the connecting portion 22ah connects the end of the side 22ad in the Y direction and the end of the side 22aa in the direction opposite to the X direction, the connecting portion 22ah may have any shape.

[0036] See now Figure 3 to Figure 5. The upper top wall 22 includes a first protrusion 22d, a second protrusion 22f, a first curved portion 22g, a second curved portion 22h, and a middle portion 22i. The first protrusion 22d is provided at the central portion of the upper top wall 22. The second protrusion 22f is provided around the first protrusion 22d. The first curved portion 22g, the second curved portion 22h, and the intermediate portion 22i are provided between the first protrusion 22d and the second protrusion 22f. The first curved portion 22g, the second curved portion 22h, and the intermediate portion 22i constitute an intermediate portion 22k provided between the first protrusion 22d and the second protrusion 22f. The first protrusion 22d is also referred to as an inner protrusion or bead, and the second protrusion 22f is also referred to as an outer protrusion or bead.

[0037] The first protrusion 22d protrudes toward the inside of the housing 11. More specifically, the first protrusion 22d protrudes toward the inside of the housing 11 from the middle portion 22k. The outer surface 22b in the first protrusion 22d has a recess 22m (opening). The first protrusion 22d has a first top wall 22da and a first peripheral wall 22db. The first top wall 22da extends along the X-Y plane.

[0038] The first peripheral wall 22db is annularly formed around the first top wall 22da and is connected to the outer peripheral edge 22dc of the first top wall 22da. The first top wall 22da supports the motor 30. The first top wall 22da supports the fan 31 via the motor 30. In other words, the first top wall 22da supports the vibration member. In detail, when viewed along the Z direction, the first top wall 22da includes a plurality of (exemplarily three) support portions 22j provided around the center axis Ax of the motor 30. The support portion 22j protrudes in a direction opposite to the Z direction. Stud bolts or any other fasteners are fixed to each of the support parts 22j, and the housing 30a of the motor 30 is fixed to the support parts 22j via the fasteners. That is, the support portion 22j supports the motor 30. The support portion 22j supports the fan 31 via the motor 30. In other words, the support portion 22j supports the vibration member. When viewed in the Z direction, the first top wall 22da is formed in a polygonal shape (exemplarily a triangle) having a corner 22ja provided for each supporting portion 22j. Note that the corner 22ja may be curved or right-angled.

[0039] The second protrusion 22f is formed annularly and protrudes to the outside of the housing 11. Specifically, the second protrusion 22f protrudes from the middle portion 22k to the outside of the housing 11. The inner surface 22c in the second protrusion 22f has a recess 22n (opening). When viewed along the Z direction ( Figure 4 ), the second protrusion 22f is provided at a position surrounding the first top wall 22da. In addition, the second protrusion 22f is connected to the first protrusion 22d via the first curved portion 22g and the second curved portion 22h, and the first curved portion 22g includes the end of the first peripheral wall 22db away from the first top wall 22da, and The second curved portion 22h includes an end of the middle portion 22i away from the first curved portion 22g. The second protrusion 22f has a second top wall 22fa, a second peripheral wall 22fb, and a third peripheral wall 22fc. The second top wall 22fa extends along the X-Y plane. When viewed along the Z direction, the second top wall 22fa is provided at a position surrounding the first top wall 22da. The second peripheral wall 22fb is annularly formed along the inner peripheral direction of the second top wall 22fa and is connected to the inner peripheral edge 22fd ( Figure 5 ) Is connected to the second bent portion 22h. The third peripheral wall 22fc is annularly formed in the outer peripheral direction of the second top wall 22fa and is connected to the outer peripheral edge 22fe ( Figure 5 )connection. The second peripheral wall 22fb is also referred to as an inner peripheral wall, and the third peripheral wall 22fc is also referred to as an outer peripheral wall.

[0040] The first bent portion 22g is formed annularly around the first protrusion 22d and is connected to the first peripheral wall 22db of the first protrusion 22d. The second curved portion 22h is annularly formed around the first curved portion 22g and is connected to the second protrusion 22f.

[0041] The intermediate portion 22i is provided between the first curved portion 22g and the second curved portion 22h. The intermediate portion 22i is formed annularly along the X-Y plane. When viewed along the Z direction, the intermediate portion 22i is provided at a position surrounding the first top wall 22da of the first protrusion 22d and is connected to the first top wall 22da via the first bent portion 22g. The outer surface 22b in the middle portion 22i has a recess 22p surrounded by a first protrusion 22d and a second protrusion 22f ( Figure 5 For the opening). The recess 22p is connected to the recess 22m. In other words, a larger opening is formed in the recess 22p than in the recess 22m. In other words, the recess 22p is formed so that the opening expands in the Z direction from the first top wall 22da of the first protrusion 22d via the middle portion 22k.

[0042] The intermediate portion 22i includes a plurality of third protrusions 22ia to 22id protruding in a direction (for example, the X direction and the Y direction) intersecting the Z direction. The third protrusion 22ia and the third protrusion 22ic protrude in directions opposite to each other. In detail, the third protrusion 22ia protrudes in the Y direction and the third protrusion 22ic protrudes in a direction opposite to the Y direction. The third protrusion 22ia and the third protrusion 22ic constitute a group P1. Similarly, the third protrusion 22ib and the third protrusion 22id protrude in directions opposite to each other. In detail, the third protrusion 22ib protrudes in the X direction and the third protrusion 22id protrudes in the direction opposite to the X direction. The third protrusion 22ib and the third protrusion 22id constitute a group P2.

[0043] As described above, the embodiment includes one or more (exemplarily two) groups as the groups P1 and P2, and each group includes two of the third protrusions 22a to 22id that protrude in opposite directions to each other. . The third protrusions 22ia and 22ic constituting the group P1 protrude in the Y direction and a direction opposite to the Y direction, and the protrusions 22ib and 22id constituting the group P2 protrude in the X direction and a direction opposite to the X direction. That is, the direction in which the third protrusion of one of the two groups P1 and P2 of the third protrusions 22ia to 22id protrudes is the same as the direction in which the third protrusion of the other of the two groups P1 and P2 of the third protrusions 22a to 22id protrudes. The protruding directions of the three protrusions intersect.

[0044] See now image 3 , Figure 4 with Image 6. The upper top wall 22 includes a plurality of fourth protrusions 22q. The fourth protrusion 22q protrudes to the outside of the housing 11. In detail, the fourth protrusion 22q protrudes to the outside of the housing 11 from the outer surface 22b surrounding the fourth protrusion 22q. The height of the fourth protrusion 22q is equal to or lower than the height of the second protrusion 22f. Note that the height of the fourth protrusion 22q is not limited to the above and may be higher than the height of the second protrusion 22f. That is, the height of the fourth protrusion 22q may be any height. The inner surface 22c in the fourth protrusion 22q has a recess 22r (opening). When viewed in the Z direction (first direction), the fourth protrusion 22q is provided at a position surrounding the second protrusion 22f ( Figure 4 ). In addition, the fourth protrusions 22q are spaced apart from each other. The above configuration results in a plurality of grooves 22s formed between each pair of fourth protrusions 22q in the outer surface 22b of the upper top wall 22 ( image 3 ). The groove 22s is formed radially around the center portion of the upper top wall 22. The circumferential width of the groove 22s surrounding the central portion (central axis Ax) of the upper top wall 22 is each smaller than the circumferential width of each of the fourth protrusions 22q around the central portion (central axis Ax) of the upper top wall 22. Note that the circumferential width of the groove 22s surrounding the central portion (central axis Ax) of the upper top wall 22 may be each larger than the circumferential width of each of the fourth protrusions 22q surrounding the central portion (central axis Ax) of the upper top wall 22 Circumferential width. The fourth protrusion 22q is also called a bead.

[0045] As described above, exemplarily in the embodiment, the upper top wall 22 (high rigidity plate) of the housing 11 includes the first protrusion 22d, the middle portion 22i, and the second protrusion 22f. The first protrusion 22d has a first top wall 22da supporting a motor 30 (vibration transmission member) mounted with a fan 31 (vibration source) that generates vibration, and a first peripheral wall 22db connected to the outer peripheral edge 22dc of the first top wall 22da . The first protrusion 22d protrudes toward the inside of the housing 11. When viewed in the Z direction (first direction), the intermediate portion 22i is provided at a position surrounding the first top wall 22da and is connected to the first peripheral wall 22db via the first curved portion 22g. The second protrusion 22f is formed annularly. When viewed along the Z direction (first direction), the second protrusion 22f includes a second top wall 22fa provided at a position surrounding the first top wall 22da, and is connected to and connected to the intermediate portion 22i via the second curved portion 22h. The second peripheral wall 22fb is connected to the inner peripheral edge 22fd of the second top wall 22fa. Therefore, according to the embodiment, the upper top wall 22 has higher rigidity, for example, compared to a configuration having only one protrusion. Therefore, the vibration (downward vibration) of the upper top wall 22 caused by the vibration (operation) of the fan 31 can be minimized. Thereby, for example, it is easy to increase the speed of the resonance peak of the upper top wall 22, so that the peak is likely to fall outside the operating speed range of the motor 30 in operation.

[0046] In the embodiment, for example, the upper top wall 22 includes a first curved portion 22g connected with the first protrusion 22d, a second curved portion 22h connected with the second protrusion 22f, and a second curved portion 22h provided on the first curved portion 22g and the second The middle portion 22i between the bent portions 22h. Therefore, according to the embodiment, exemplarily, the two bending portions (the first bending portion 22 g and the second bending portion 22 h) increase the rigidity of the upper top wall 22.

[0047] In the embodiment, exemplarily, the middle portion 22i includes third protrusions 22ia to 22id protruding in a direction intersecting the Z direction. Therefore, according to the embodiment, exemplarily, the third protrusions 22a to 22id increase the rigidity of the upper top wall 22.

[0048] In the embodiment, exemplarily, the intermediate portion 22i includes one or more groups as the groups P1 and P2, and these groups each include two third protrusions protruding in opposite directions from each other among the third protrusions 22ia to 22id. . Therefore, according to the embodiment, for example, one or more groups as the groups P1 and P2 increase the rigidity of the upper top wall 22, and these groups each include two of the third protrusions 22ia to 22id.

[0049] In the embodiment, exemplarily, two groups P1 and P2 each including two third protrusions of the third protrusions 22ia to 22id are provided, and the third protrusions 22ia to 22id included in the group P1 and the group P2 are in each other. Protruding in the direction of intersection. Therefore, according to the embodiment, exemplarily, for the two groups P1 and P2, the direction in which the third protrusion of one of the two groups of the third protrusions 22ia to 22id protrudes is different from that of the third protrusions 22ia to 22id. The protruding directions of the third protrusions of the other of the two groups intersect, so that the rigidity of the upper top wall 22 is increased.

[0050] In the embodiment, exemplarily, the first top wall 22da includes a supporting portion 22j, and when viewed along the Z direction, the supporting portion 22j is disposed around the center axis Ax of the motor 30, thereby supporting the fan 31. When viewed along the Z direction, the first top wall 22da is formed in a polygonal shape having a corner 22ja provided for the corresponding support portion 22j. Therefore, according to the embodiment, exemplarily, the polygonal first top wall 22da increases the rigidity of the wall.

[0051] Note that although the embodiment has been described with respect to the exemplary configuration in which the first protrusion 22d protrudes to the inside of the housing 11, the first protrusion 22d may protrude to the outside of the housing 11. In addition, although the embodiment has been described for the exemplary configuration in which the second protrusion 22f protrudes to the outside of the housing 11, the second protrusion 22f may protrude to the inside of the housing 11. In addition, although the embodiment has been described for an exemplary configuration in which the fourth protrusion 22q protrudes to the outside of the housing 11, the fourth protrusion 22q may protrude to the inside of the housing 11. In addition, although the embodiment has been described for an exemplary configuration in which the fourth protrusions 22q are provided to be spaced apart from each other, a single fourth protrusion 22q may be provided annularly to surround the second protrusion 22f.

[0052] Although certain embodiments have been described, these embodiments are presented only by way of example and are not intended to limit the scope of the present invention. In fact, the novel embodiments described herein can be implemented in various other forms; in addition, without departing from the spirit of the present invention, various omissions, substitutions and changes can be made in the form of the embodiments described herein. The appended claims and their equivalents are intended to cover these forms or modifications that fall within the scope and spirit of the present invention.