Outdoor unit and refrigeration cycle device

Abstract

According to one embodiment of the present disclosure, an outdoor unit of a refrigeration cycle device is provided with a housing having a first chamber and a second chamber partitioned from each other by a partition member, a heat exchanger disposed inside the first chamber, an air blower disposed inside the first chamber, and a control unit disposed inside the second chamber, a drain hole formed in the bottom of the first chamber, a drain flow path portion formed across the bottom of the first chamber and the bottom of the second chamber and connected to the drain hole, and a pair of support portions supporting the partition member from the lower side in the vertical direction are formed in the bottom of the housing, and the drain flow path portion has a narrow flow path portion located between the pair of support portions. The partition member has a facing portion that faces the vertical upper side of the bottom surface of the narrow flow path portion via the gap, a stepped portion is formed on the bottom surface of the narrow flow path portion, and the side of the stepped portion that is farther from the drain hole is higher than the side of the stepped portion that is closer to the drain hole in the extension direction in which the narrow flow path portion extends when viewed from the vertical upper side.

Description

Technical Field

[0001] The present disclosure relates to an outdoor unit and a refrigeration cycle device. Background Art

[0002] For example, as disclosed in Patent Document 1, there is known an outdoor unit in which a drainage channel for draining condensed water or the like is formed on a bottom plate of a casing.

[0003] Patent Document 1: Japanese Patent No. 3523823

[0004] In the outdoor unit as described above, small creatures such as reptiles and insects may invade the machine room through the drainage channel. For example, in Patent Document 1, a step is formed on the bottom plate to prevent condensed water and other water from flowing out of the heat exchanger mounting surface. However, it is difficult to prevent small creatures from invading the machine room by simply providing the step. Summary of the invention

[0005] In view of the above circumstances, one object of the present disclosure is to provide an outdoor unit having a structure capable of suppressing the intrusion of small organisms into a machine room, and a refrigeration cycle device including such an outdoor unit.

[0006] One aspect of the outdoor unit disclosed herein is an outdoor unit of a refrigeration cycle device, wherein the outdoor unit comprises: a housing having a first chamber and a second chamber partitioned from each other by a partition member; a heat exchanger disposed inside the first chamber; a blower disposed inside the first chamber; and a control unit disposed inside the second chamber, wherein the housing is provided at the bottom with: a drain hole formed at the bottom of the first chamber; a drain flow path portion formed across the bottom of the first chamber and the bottom of the second chamber and connected to the drain hole; and a pair of support portions supporting the partition member from a vertical lower side, the drain flow path portion having a narrow flow path portion located between the pair of support portions, the partition member having an opposing portion opposed to the vertical upper side of the bottom surface of the narrow flow path portion via a gap, a step portion being formed on the bottom surface of the narrow flow path portion, and when viewed from the vertical upper side, in the extending direction in which the narrow flow path portion extends, the side of the step portion farther from the drain hole is higher than the side closer to the drain hole.

[0007] One embodiment of a refrigeration cycle device of the present disclosure includes an outdoor unit and an indoor unit.

[0008] According to the present disclosure, in the outdoor unit of the refrigeration cycle device, it is possible to suppress the intrusion of small organisms into the machine room. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram showing a schematic configuration of a refrigeration cycle device according to Embodiment 1.

[0010] Figure 2 It is a perspective view showing the outdoor unit according to Embodiment 1.

[0011] Figure 3 It is a perspective view showing a part of the outdoor unit according to Embodiment 1.

[0012] Figure 4 This is a diagram showing a part of the outdoor unit according to Embodiment 1 as viewed from the front.

[0013] Figure 5 This is a diagram showing a part of the outdoor unit according to Embodiment 1 as viewed from above.

[0014] Figure 6 It is a perspective view showing the control unit according to the first embodiment.

[0015] Figure 7 It is a cross-sectional view showing the valve unit and the protection cover according to the first embodiment.

[0016] Figure 8 It is a cross-sectional perspective view showing the valve unit and the protection cover according to the first embodiment.

[0017] Fig. 9 It is a perspective view showing a part of the protection cover and a part of the bottom plate portion according to the first embodiment.

[0018] Fig.10 It is a perspective view showing a part of the bottom plate portion and a part of the partition member according to the first embodiment.

[0019] Fig.11 is a perspective view showing a portion of the bottom plate portion and a portion of the partition member of the first embodiment, and is viewed from the perspective of Fig.10 Observe the diagrams of each part from different angles.

[0020] Fig.12 This is a perspective view showing a part of the bottom plate portion according to the first embodiment.

[0021] Fig.13 is a perspective view showing a portion of the bottom plate portion of the first embodiment, and is viewed from the perspective of Fig.12 A portion of the bottom plate is viewed from different angles.

[0022] Fig.14 This is a diagram showing the bottom plate portion of Embodiment 1 as viewed from the front.

[0023] Fig.15 is a cross-sectional view showing a portion of the bottom plate portion and a portion of the partition member according to the first embodiment, and is Figure 5 XV-XV section view in.

[0024] Fig.16This is a diagram for explaining the effects of the first embodiment.

[0025] Fig.17 It is a cross-sectional view showing a part of the bottom plate portion and a part of the partition member according to the second embodiment.

[0026] Fig.18 This is a diagram for explaining the effects of the second embodiment. DETAILED DESCRIPTION

[0027] Hereinafter, the embodiments of the present disclosure will be described with reference to the accompanying drawings. In addition, the scope of the present disclosure is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical concept of the present disclosure. In addition, in the following drawings, in order to facilitate the understanding of each structure, there is a case where the scale and number of each structure are different from the scale and number of the actual structure.

[0028] In addition, the X-axis, Y-axis and Z-axis are appropriately shown in the accompanying drawings. The X-axis represents one direction in the horizontal direction. The Y-axis represents another direction in the horizontal direction. The Z-axis represents the vertical direction. In the following description, the horizontal direction along the X-axis is referred to as the "front-rear direction X", the horizontal direction along the Y-axis is referred to as the "left-right direction Y", and the vertical direction along the Z-axis is referred to as the "vertical direction Z". The front-rear direction X, the left-right direction Y and the vertical direction Z are mutually orthogonal directions. In the following description, the side (+Z side) to which the arrow of the Z-axis in the vertical direction Z points is set as the upper side, and the opposite side (-Z side) to which the arrow of the Z-axis in the vertical direction Z points is set as the lower side. In addition, the side (+X side) to which the arrow of the X-axis in the front-rear direction X points is set as the front side, and the opposite side (-X side) to which the arrow of the X-axis in the front-rear direction X points is set as the rear side. In addition, the left-right direction Y is set as the left-right direction when the outdoor unit of the following embodiment is observed from the front side (+X side). That is, the side to which the Y-axis arrow in the left-right direction Y points (+Y side) is the right side, and the side opposite to which the Y-axis arrow in the left-right direction Y points (-Y side) is the left side.

[0029] Implementation method 1.

[0030] Figure 1 1 is a schematic diagram showing a schematic structure of a refrigeration cycle device 100 according to Embodiment 1. The refrigeration cycle device 100 is a device that utilizes a refrigeration cycle in which a refrigerant 19 circulates. In Embodiment 1, the refrigeration cycle device 100 is an air conditioner. Figure 1As shown, the refrigeration cycle device 100 includes an outdoor unit 10, an indoor unit 20, and a circulation path portion 18. The outdoor unit 10 is arranged outdoors. The indoor unit 20 is arranged indoors. The outdoor unit 10 and the indoor unit 20 are connected to each other through the circulation path portion 18 for circulating the refrigerant 19. The outdoor unit 10 and the indoor unit 20 are heat exchange units that perform heat exchange with air.

[0031] The refrigeration cycle device 100 can adjust the temperature of the indoor air by exchanging heat between the refrigerant 19 flowing in the circulation path portion 18 and the indoor air in which the indoor unit 20 is arranged. Examples of the refrigerant 19 include fluorine-based refrigerants and hydrocarbon-based refrigerants with low global warming potential (GWP).

[0032] The outdoor unit 10 includes a casing 30, a compressor 12, a heat exchanger 13, a flow regulating valve 14, a blower 15, a four-way valve 16, and a controller 17. The casing 30 accommodates the compressor 12, the heat exchanger 13, the flow regulating valve 14, the blower 15, the four-way valve 16, and the controller 17.

[0033] The compressor 12, the heat exchanger 13, the flow regulating valve 14, and the four-way valve 16 are provided in a portion of the circulation path portion 18 located inside the housing 30. The compressor 12, the heat exchanger 13, the flow regulating valve 14, and the four-way valve 16 are connected through a portion of the circulation path portion 18 located inside the housing 30.

[0034] The four-way valve 16 is provided in a portion of the circulation path portion 18 connected to the discharge side of the compressor 12. The four-way valve 16 can reverse the direction of the refrigerant 19 flowing in the circulation path portion 18 by switching a portion of the path of the circulation path portion 18. Figure 1 In the case of the path shown by the solid line in the four-way valve 16, the refrigerant 19 flows in the circulation path portion 18. Figure 1 On the other hand, the path connected by the four-way valve 16 is Figure 1 In the case of the path shown by the dotted line in the four-way valve 16, the refrigerant 19 flows in the circulation path portion 18. Figure 1 Flow in the direction indicated by the dashed arrow.

[0035] The indoor unit 20 includes a casing 21, a heat exchanger 22, and a blower 23. The casing 21 accommodates the heat exchanger 22 and the blower 23. The indoor unit 20 can perform a cooling operation to cool the indoor air in which the indoor unit 20 is arranged, and a heating operation to heat the indoor air in which the indoor unit 20 is arranged.

[0036] When the indoor unit 20 performs cooling operation, the refrigerant 19 flowing in the circulation path portion 18 flows along the Figure 1 That is, when the indoor unit 20 performs cooling operation, the refrigerant 19 flowing in the circulation path portion 18 circulates in a manner that it passes through the compressor 12, the heat exchanger 13 of the outdoor unit 10, the flow regulating valve 14, and the heat exchanger 22 of the indoor unit 20 in sequence and returns to the compressor 12. In cooling operation, the heat exchanger 13 in the outdoor unit 10 functions as a condenser, and the heat exchanger 22 in the indoor unit 20 functions as an evaporator.

[0037] On the other hand, when the indoor unit 20 performs heating operation, the refrigerant 19 flowing in the circulation path portion 18 is directed to the indoor unit 20. Figure 1 That is, when the indoor unit 20 performs heating operation, the refrigerant 19 flowing in the circulation path portion 18 circulates in a manner that it passes through the compressor 12, the heat exchanger 22 of the indoor unit 20, the flow regulating valve 14, and the heat exchanger 13 of the outdoor unit 10 in sequence and returns to the compressor 12. In the heating operation, the heat exchanger 13 in the outdoor unit 10 functions as an evaporator, and the heat exchanger 22 in the indoor unit 20 functions as a condenser.

[0038] Next, the outdoor unit 10 will be described in further detail. Figure 2 It is a perspective view showing the outdoor unit 10 . Figure 3 It is a perspective view showing a part of the outdoor unit 10 . Figure 4 This is a diagram of a part of the outdoor unit 10 as viewed from the front side (+X side). Figure 5 This is a diagram showing a portion of the outdoor unit 10 as viewed from above.

[0039] like Figure 2 As shown, the housing 30 of the outdoor unit 10 is a substantially rectangular box-shaped body that is long in the left-right direction Y. The housing 30 includes: a front panel 31 that constitutes a front wall portion in the housing 30; a right side panel 32 that constitutes a right wall portion in the housing 30; and a top panel 33 that constitutes an upper wall portion in the housing 30. The front panel 31 is provided with a blow-out port 10a that opens to the front side (+X side). The blow-out port 10a is covered from the front side by a lattice-shaped grille 36 mounted on the front panel 31.

[0040] like Figures 3 to 5 As shown in FIG. 1 , the housing 30 includes a bottom plate portion 34 constituting a wall portion on the lower side of the housing 30 and a partition member 37 that partitions the interior of the housing 30 in the left-right direction Y. The bottom plate portion 34 is the bottom of the housing 30. A pair of legs 39 are provided on the lower surface of the bottom plate portion 34. The pair of legs 39 are arranged at intervals in the left-right direction Y. Figure 3As shown, the bottom plate portion 34 includes a bottom plate main body portion 34a and a frame portion 34b. The bottom plate main body portion 34a is in a substantially rectangular shape that is long in the left-right direction Y when viewed along the vertical direction Z. The frame portion 34b protrudes upward from the outer edge of the bottom plate main body portion 34a. The frame portion 34b is in a rectangular frame shape that is long in the left-right direction Y.

[0041] The partition member 37 extends in the vertical direction Z. More specifically, the partition member 37 extends upward from the bottom plate main body 34a. Figure 5 As shown, the rear side (-X side) of the partition member 37 is bent toward the machine room 30b side described later, that is, the right side, when viewed along the vertical direction Z. The partition member 37 includes a plate-shaped main body 37a that partitions the interior of the housing 30. The plate surface of the main body 37a faces the horizontal direction orthogonal to the vertical direction Z. The main body 37a includes a first portion 37b and a second portion 37c.

[0042] When observed along the vertical direction Z, the first part 37b extends along the front-to-back direction X. The end of the front side (+X side) of the first part 37b is connected to the front surface panel 31. The second part 37c is connected to the end of the rear side (-X side) of the first part 37b. The second part 37c extends obliquely relative to the front-to-back direction X and the left-right direction Y. When observed along the vertical direction Z, the second part 37c extends from the end of the rear side (-X side) of the first part 37b to the rear side and the right side. In addition, when observed along the vertical direction Z, the portion of the rear side (-X side) of the partition member 37 may be bent toward the side of the blower chamber 30a described later, that is, the left side, or may not be bent.

[0043] The housing 30 has a blower room 30a and a machine room 30b which are separated from each other by a partition member 37. In Embodiment 1, the blower room 30a corresponds to the "first room" and the machine room 30b corresponds to the "second room". The blower room 30a and the machine room 30b are arranged adjacent to each other in the left-right direction Y. The dimension of the blower room 30a in the left-right direction Y is larger than the dimension of the machine room 30b in the left-right direction Y. The blower room 30a is located on the left side of the machine room 30b. Figure 3 As shown, the heat exchanger 13 and the blower 15 are arranged inside the blower chamber 30a.

[0044] In Embodiment 1, the heat exchanger 13 is substantially L-shaped when viewed in the vertical direction Z. The heat exchanger 13 has a first portion 13a extending in the left-right direction Y when viewed in the vertical direction Z and a second portion 13b extending from the left end of the first portion 13a to the front side (+X side) when viewed in the vertical direction Z. The first portion 13a is disposed at the rear end in the blower chamber 30a. The right end of the first portion 13a is exposed in the machine chamber 30b. The refrigerant pipe group 40 disposed in the machine chamber 30b is connected to the right end of the first portion 13a. The second portion 13b is disposed at the left end in the blower chamber 30a. In the blower chamber 30a, the blower 15 is located in front of the first portion 13a in the heat exchanger 13 and on the right side of the second portion 13b in the heat exchanger 13. In addition, the heat exchanger 13 may also be observed as a straight line in the vertical direction Z.

[0045] When the blower 15 is driven, air is sucked into the blower chamber 30a from an unillustrated suction port provided on the wall portion of the rear side (-X side) of the blower chamber 30a. The air sucked into the blower chamber 30a passes through the heat exchanger 13 and is blown out to the outside of the housing 30 from the blow-out port 10a provided on the wall portion of the front side (+X side) of the blower chamber 30a. In this way, the blower 15 delivers air to the heat exchanger 13. In Embodiment 1, since the portion of the rear side (-X side) of the partition member 37 is bent toward the machine chamber 30b side, the air path through which the air delivered by the blower 15 passes can be made narrower as it approaches the impeller of the blower 15 from the unillustrated suction port to the impeller of the blower 15. Thus, the air supply efficiency of the blower 15 can be improved.

[0046] The compressor 12 and the control unit 17 are arranged inside the machine room 30b. The compressor 12 is arranged in the lower part of the machine room 30b. The compressor 12 is substantially cylindrical and extends in the vertical direction Z. The temperature of the refrigerant 19 flowing into the compressor 12 is often lower than the ambient temperature in the machine room 30b. Therefore, condensation may occur on the surface of the compressor 12. Figure 5 The suction muffler 12a of the compressor 12 shown and the pipe connected to the suction muffler 12a are prone to condensation water, which is discharged to the outside of the outdoor unit 10 through the first drainage flow path 61 described later.

[0047] like Figure 3 As shown, the control unit 17 is arranged in the upper part of the interior of the machine room 30b. The control unit 17 is located above the compressor 12. The control unit 17 controls each part of the outdoor unit 10. Specifically, the control unit 17 controls the compressor 12 and the blower 15. The control unit 17 is, for example, a system control unit that controls the entire refrigeration cycle device 100. Figure 61 is a perspective view showing the control unit 17. The control unit 17 includes a terminal block 17a and a control substrate 17b. Although not shown in the figure, a power line for supplying power to the outdoor unit 10 and a connection line for connecting the indoor unit 20 and the outdoor unit 10 are connected to the terminal block 17a. The control substrate 17b is a substrate for controlling each part of the outdoor unit 10. A plurality of electronic components exposed in the machine room 30b are mounted on the lower surface of the control substrate 17b.

[0048] like Figure 3 As shown, a refrigerant pipe group 40 is arranged inside the machine room 30b. The refrigerant pipe group 40 constitutes a part of the circulation path portion 18. The refrigerant pipe group 40 has a plurality of refrigerant pipes 41. Although not shown in the figure, the refrigerant pipe group 40 is connected to the pipe extending from the indoor unit 20 via the valve unit 50.

[0049] The valve unit 50 connects the refrigerant pipe group 40 to the pipe extending from the indoor unit 20. The valve unit 50 includes a liquid valve 51, a gas valve 52, and a valve fixing portion 53. The valve fixing portion 53 extends upward from the right end portion of the bottom plate portion 34. The lower end portion of the valve fixing portion 53 is fixed to the bottom plate portion 34. The lower end portion of the valve fixing portion 53 is located inside the frame portion 34b. Figure 7 2 is a cross-sectional view showing the valve unit 50 and the protective cover 35 described later. Figure 7 As shown, the valve fixing portion 53 constitutes a part of the right wall portion of the housing 30 together with the right side panel 32 .

[0050] The liquid valve 51 and the gas valve 52 constitute a part of the circulation path portion 18. The liquid valve 51 and the gas valve 52 are fixed to the valve fixing portion 53. The liquid valve 51 and the gas valve 52 protrude to the right from the valve fixing portion 53. The liquid valve 51 is located on the upper side of the gas valve 52. The refrigerant pipe 41 of the refrigerant pipe group 40 is connected to the liquid valve 51 and the gas valve 52, respectively. A liquid pipe among a plurality of refrigerant pipes 41 is connected to the liquid valve 51. A gas pipe among a plurality of refrigerant pipes 41 is connected to the gas valve 52. The liquid valve 51 and the gas valve 52 are located outside the machine room 30b.

[0051] The liquid valve 51 and the gas valve 52 are covered from the right side by the protective cover 35. The protective cover 35 can suppress unexpected impact on the liquid valve 51 and the gas valve 52. Thus, damage to the liquid valve 51 and the gas valve 52 can be suppressed, and leakage of the refrigerant 19 from the liquid valve 51 and the gas valve 52 can be suppressed.

[0052] like Figure 2 As shown, the protective cover 35 is mounted on the right side of the housing 30. The protective cover 35 is mounted on the right side panel 32. The protective cover 35 extends in the vertical direction Z. The lower part of the protective cover 35 is a valve protection part 35a. The valve protection part 35a protrudes to the right side than the upper part of the protective cover 35. Figure 8 2 is a cross-sectional perspective view showing the valve unit 50 and the protective cover 35. Figure 7 and Figure 8 As shown, the valve protection portion 35a is in a box shape that is open to the left. A valve housing portion 54 that houses the liquid valve 51 and the gas valve 52 is formed by a portion of the right side panel 32, the valve fixing portion 53, and the valve protection portion 35a.

[0053] Fig. 9 3 is a perspective view showing a part of the protective cover 35 and a part of the bottom plate 34. Fig. 9 As shown, the protective cover 35 has a drainage guide portion 35b protruding to the left side (-Y side) from the inner surface of the valve protection portion 35a. A drainage groove 35c that is recessed downward is formed on the upper surface of the drainage guide portion 35b. The drainage groove 35c extends in the left-right direction Y. The drainage groove 35c is open to the upper side and the left side. The bottom surface of the drainage groove 35c is an inclined surface that is located on the lower side as it moves toward the left side. The left end of the drainage groove 35c is located on the upper side of the first flow path portion 61a of the first drainage flow path portion 61 described later. As shown Figure 7 As shown, the drainage guide portion 35 b is located on the lower side of the liquid valve 51 and the gas valve 52 .

[0054] During cooling operation, the low-temperature and liquid refrigerant 19 flows from the outdoor unit 10 to the indoor unit 20. Therefore, the liquid valve 51 is cooled by the liquid refrigerant 19, and the temperature of the liquid valve 51 tends to become lower than the outside air. In addition, during cooling operation, the gaseous refrigerant 19 after heat exchange with the indoor air in the heat exchanger 22 of the indoor unit 20 flows from the indoor unit 20 to the outdoor unit 10. The temperature of the gaseous refrigerant 19 is also often lower than that of the outside air. Therefore, the gas valve 52 is cooled by the gaseous refrigerant 19, and the temperature of the gas valve 52 tends to become lower than that of the outside air. Therefore, during cooling operation, condensation water tends to form on the surface of the liquid valve 51 and the surface of the gas valve 52.

[0055] The condensed water generated on the surface of the liquid valve 51 and the surface of the gas valve 52 falls onto the drainage guide portion 35b. Fig. 9 The dew condensation water flowing in the drain groove 35c flows like the water Wa shown by the double-dashed line in the drain groove 35c and is recovered in the machine room 30b. More specifically, the dew condensation water flowing in the drain groove 35c is discharged from the opening on the left side of the drain groove 35c, passes through the gap between the valve fixing portion 53 and the frame portion 34b of the bottom plate portion 34, and flows into the first drain flow path portion 61 described later. Thus, it is possible to prevent the dew condensation water generated on the surface of the liquid valve 51 and the surface of the gas valve 52 from leaking to the outside of the outdoor unit 10 and splashing onto unexpected objects, etc.

[0056] In addition, a hole is formed in the protective cover 35 for passing the piping extending from the indoor unit 20, so rainwater and the like may sometimes intrude into the interior of the valve housing 54 through the hole. In such a case, the rainwater and the like also flow toward the first drainage flow path portion 61 through the drainage groove 35c. In addition, the number of liquid valves 51 and the number of gas valves 52 are not particularly limited. The relative configuration relationship between the liquid valve 51 and the gas valve 52 is also not particularly limited. The protective cover 35 may also cover the liquid valve 51 and the gas valve 52 only from the bottom. In this case, the protective cover 35 may also be used to guide the condensation water falling from the liquid valve 51 and the gas valve 52 to the first drainage flow path portion 61 described later.

[0057] Next, the bottom plate portion 34 and the partition member 37 will be described in more detail. Fig.10 It is a perspective view showing a part of the bottom plate portion 34 and a part of the partition member 37 . Fig.11 is a perspective view showing a part of the bottom plate 34 and a part of the partition member 37, and is viewed from the perspective of Fig.10 Observe the diagrams of each part from different angles. Fig.12 It is a perspective view showing a part of the bottom plate portion 34 . Fig.13 is a perspective view showing a portion of the bottom plate portion 34, which is viewed from the Fig.12 A portion of the bottom plate portion 34 is viewed from a different angle.

[0058] like Figures 10 to 13 As shown, a pair of support portions 34c and 34d are formed on the bottom plate portion 34. A pair of support portions 34c and 34d are formed on the right side (+Y side) of the bottom plate portion 34. A pair of support portions 34c and 34d protrude upward from the bottom surface of the first drainage flow path portion 61 described later. In embodiment 1, a pair of support portions 34c and 34d are arranged at intervals in a direction inclined to the left and right direction Y relative to the front-rear direction X. A pair of support portions 34c and 34d are respectively arranged at the position of the second portion 37c of the support partition member 37. The support portion 34c is located at a position closer to the right side (+Y side) and to the rear side (-X side) than the support portion 34d. A pair of support portions 34c and 34d are arranged across the second flow path portion 61b in the first drainage flow path portion 61 described later.

[0059] like Fig.10 and Fig.11 As shown in the figure, a pair of supporting parts 34c and 34d support the partition member 37 from the lower side. More specifically, the pair of supporting parts 34c and 34d support the second portion 37c of the partition member 37 from the lower side. The partition member 37 has an opposing part 37d located between the pair of supporting parts 34c and 34d. The opposing part 37d protrudes downward from the second portion 37c of the partition member 37. When viewed in a direction perpendicular to the plate surface of the second portion 37c, the opposing part 37d is a trapezoidal shape whose width becomes narrower as it goes downward.

[0060] Each portion of the lower end of the partition member 37 supported by the pair of support portions 34c, 34d is in contact with the pair of support portions 34c, 34d. In addition, a small gap may be provided between each portion of the lower end of the partition member 37 supported by the pair of support portions 34c, 34d and the pair of support portions 34c, 34d. In this case, the gap may be sealed by a sealing material.

[0061] like Figure 5 As shown, a drain hole 38 is formed in the bottom plate portion 34, which passes through the bottom plate portion 34 in the vertical direction Z. The drain hole 38 is formed in a portion of the bottom plate portion 34 that constitutes the bottom of the blower chamber 30a. In Embodiment 1, the drain hole 38 is formed in the center portion of the left-right direction Y at the end portion on the rear side (-X side) of the bottom plate main body portion 34a. The drain hole 38 is a circular hole. In Embodiment 1, the end portion on the rear side of the drain hole 38 is located on the lower side of the first portion 13a of the heat exchanger 13.

[0062] Fig.14 This is a diagram of the bottom plate portion 34 viewed from the front side (+X side). Fig.14 As shown, a portion of the bottom plate main body 34a is recessed downward. In the bottom plate main body 34a, the portion where the drain hole 38 is formed is located at the lowest side. The drain hole 38 is located above the lower surface of the pair of legs 39. The drain hole 38 is opposite to the installation surface where the outdoor unit 10 is installed with a small gap.

[0063] like Figure 5 As shown, a first drainage flow path portion 61, a second drainage flow path portion 62, and a third drainage flow path portion 63 are formed on the bottom plate portion 34. The first drainage flow path portion 61, the second drainage flow path portion 62, and the third drainage flow path portion 63 are formed by grooves recessed from the upper surface of the bottom plate portion 34 to the lower side. In embodiment 1, each drainage flow path portion is made by forming a concave and convex shape on the bottom plate portion 34 made of a metal plate by stamping. The first drainage flow path portion 61, the second drainage flow path portion 62, and the third drainage flow path portion 63 are connected to the drainage hole 38. The first drainage flow path portion 61 is located on the right side of the drainage hole 38. The second drainage flow path portion 62 is located on the left side of the drainage hole 38. The third drainage flow path portion 63 is located on the front side (+X side) of the drainage hole 38.

[0064] The first drainage flow path portion 61 is a drainage flow path portion formed across the bottom of the blower room 30a and the bottom of the machine room 30b. That is, the first drainage flow path portion 61 is formed across the inside of the blower room 30a and the inside of the machine room 30b. The second drainage flow path portion 62 and the third drainage flow path portion 63 are drainage flow path portions formed at the bottom of the blower room 30a. That is, the second drainage flow path portion 62 and the third drainage flow path portion 63 are formed in the blower room 30a.

[0065] The first drainage flow path 61 includes a first flow path 61a formed in the machine room 30b, a second flow path 61b formed across the inside of the blower room 30a and the inside of the machine room 30b, and a third flow path 61c formed in the blower room 30a. The first flow path 61a extends from the right end of the bottom of the machine room 30b to the rear side (-X side) and the left side. Fig. 9 As shown, the left side (-Y side) end portion of the drainage groove 35c is located above the right side (+Y side) end portion of the first flow path portion 61a.

[0066] like Figure 5 As shown, the second flow path portion 61b extends from the rear end portion of the first flow path portion 61a to the left and slightly to the rear. The third flow path portion 61c extends from the left end portion of the second flow path portion 61b to the left. The third flow path portion 61c is provided at the rear edge portion of the bottom of the blower chamber 30a. The left end portion of the third flow path portion 61c is connected to the drain hole 38.

[0067] like Figure 5 As shown by the double-dashed arrows, in the machine room 30b, condensed water Wa generated on the surface of the refrigerant piping group 40, the surface of the liquid valve 51, the surface of the gas valve 52, and the surface of the compressor 12 flows in the first drainage flow path 61. Fig.14 As shown in FIG. 1 , the bottom surface of the first drain flow path portion 61 is located at the lower side as it approaches the drain hole 38. Therefore, the water Wa that has flowed into the first drain flow path portion 61 flows to the drain hole 38 along the bottom surface of the first drain flow path portion 61 due to its own weight. The water Wa in the valve housing portion 54, such as condensed water generated on the surface of the liquid valve 51 and the surface of the gas valve 52, flows from the above-mentioned drain groove 35c into the first flow path portion 61a of the first drain flow path portion 61, flows through the second flow path portion 61b and the third flow path portion 61c in sequence, and flows to the drain hole 38.

[0068] In the following description, the upstream side of the water Wa flowing in the first drainage flow path portion 61 in the flow direction is sometimes simply referred to as the “upstream side”, and the downstream side of the water Wa flowing in the first drainage flow path portion 61 in the flow direction is sometimes simply referred to as the “downstream side”. The water Wa flowing in the first drainage flow path portion 61 also includes, for example, rainwater or the like that flows into the valve housing portion 54 from the outside of the outdoor unit 10.

[0069] like Fig.12 and Fig.13As shown, in Embodiment 1, the second flow path portion 61b of the first drainage flow path portion 61 is a narrow flow path portion located between a pair of support portions 34c and 34d. The side surfaces in the flow path width direction of the inner surface of the second flow path portion 61b are respectively constituted by the side surfaces of a pair of support portions 34c and 34d. The flow path width direction refers to a direction orthogonal to both the extension direction and the vertical direction Z of the first drainage flow path portion 61 when viewed from the upper side. The flow path width of the second flow path portion 61b is smaller than the flow path width of the portion connected to the second flow path portion 61b in the first flow path portion 61a and the flow path width of the portion connected to the second flow path portion 61b in the third flow path portion 61c. That is, the flow path width of the first drainage flow path portion 61 becomes smaller in the second flow path portion 61b. In addition, the flow path width of the second flow path portion 61b is smaller than the maximum flow path width of the third flow path portion 61c connected to the downstream side of the second flow path portion 61b in the first drainage flow path portion 61. The maximum flow path width in the third flow path portion 61c is, for example, Fig.13 Flow path width CW is shown. Fig.13 The flow path width CW shown is the dimension of the portion of the third flow path portion 61c connected to the left side (-Y side) of the left end portion of the step portion 64 described later in the front-rear direction X. In addition, the flow path width of the first drainage flow path portion 61 is the dimension of the first drainage flow path portion 61 in the flow path width direction orthogonal to both the extending direction and the vertical direction Z in which the first drainage flow path portion 61 extends when viewed from the upper side.

[0070] like Fig.10 and Fig.11 As shown, in the second flow path portion 61b of the first drainage flow path portion 61, the opposing portion 37d of the partition member 37 is inserted from the upper side. In the first embodiment, the opposing portion 37d is embedded in the second flow path portion 61b. The two edges of the opposing portion 37d in the flow path width direction of the second flow path portion 61b are respectively in contact with the inner side surfaces located on both sides of the flow path width direction of the second flow path portion 61b. The opposing portion 37d is opposed to the upper side of the bottom surface of the second flow path portion 61b with a gap G1 therebetween. The bottom surface of the second flow path portion 61b is the surface located on the lower side of the inner surface of the second flow path portion 61b.

[0071] like Fig.12 and Fig.13 As shown, a step portion 64 is formed on the bottom surface of the second flow path portion 61b in the first drainage flow path portion 61, and when viewed from the upper side, in the extension direction of the second flow path portion 61b, the side of the step portion 64 away from the drainage hole 38 is higher than the side close to the drainage hole 38. The step portion 64 is a step that protrudes upward when advancing from the downstream side to the upstream side in the second flow path portion 61b. In embodiment 1, when viewed along the vertical direction Z, the step portion 64 extends in a direction inclined to the left-right direction Y relative to the front-back direction X. Both ends of the step portion 64 are connected to a pair of support portions 34c and 34d, respectively.

[0072] The portion of the bottom surface of the second flow path portion 61b that is closer to the first flow path portion 61a than the step portion 64, that is, the portion of the bottom surface of the second flow path portion 61b that is located on the upstream side of the step portion 64 is the upstream side bottom surface 34e. The portion of the bottom surface of the second flow path portion 61b that is closer to the third flow path portion 61c than the step portion 64, that is, the portion of the bottom surface of the second flow path portion 61b that is located on the downstream side of the step portion 64 is the downstream side bottom surface 34f. The upstream side bottom surface 34e is located above the downstream side bottom surface 34f.

[0073] Fig.15 is a cross-sectional view showing a part of the bottom plate portion 34 and a part of the partition member 37. Figure 5 The XV-XV section view in Fig.15 , an arrow indicates an extension direction D in which the second flow path portion 61b extends when viewed from above. The extension direction D is a direction in which the second flow path portion 61b extends when viewed from above in the vertical direction Z, and is a direction orthogonal to the vertical direction Z. The side to which the arrow indicating the extension direction D points (+D side) is the downstream side, and the side opposite to the side to which the arrow indicating the extension direction D points (-D side) is the upstream side.

[0074] like Fig.15 As shown in FIG. 1 , the upstream bottom surface 34e and the downstream bottom surface 34f are slightly inclined relative to the horizontal plane orthogonal to the vertical direction Z. The upstream bottom surface 34e and the downstream bottom surface 34f are located on the lower side as they approach the drain hole 38. The upstream bottom surface 34e and the downstream bottom surface 34f are connected via the step surface 64a of the step portion 64. The upstream bottom surface 34e is located on the lower side as it approaches the step surface 64a. The downstream bottom surface 34f is located on the lower side as it moves away from the step surface 64a.

[0075] The step surface 64a of the step portion 64 is a surface facing the downstream side and the upper side. The upper end of the step surface 64a is connected to the end of the downstream side of the upstream side bottom surface 34e. The upper end of the step surface 64a is the upper end of the step portion 64. The lower end of the step surface 64a is connected to the end of the upstream side of the downstream side bottom surface 34f. The lower end of the step surface 64a is the lower end of the step portion 64. The step surface 64a is located on the downstream side (+D side) of the extension direction D as it faces the lower side. In embodiment 1, the angle θ formed by the step surface 64a and the downstream side bottom surface 34f is an obtuse angle. Thus, when the bottom plate portion 34 is made of a metal plate or the like, the step portion 64 is easily made. In addition, the angle θ can be 90° or an acute angle. By setting the angle θ to 90° or an acute angle, the effect of suppressing the invasion of small biological C described later into the machine chamber 30b can be more appropriately obtained.

[0076] The step portion 64 is located at a position on the upstream side (-D side) of the opposing portion 37d of the partition member 37. Thus, the lower end portion 37e of the opposing portion 37d is arranged on the upper side of the downstream bottom surface 34f with a gap G1 therebetween. In Embodiment 1, the step portion 64 is formed in the portion of the bottom surface of the second flow path portion 61b located in the machine room 30b. In addition, "the portion of the step portion 64 located in the bottom surface of the second flow path portion 61b located in the machine room 30b" is not limited to the portion of the step portion 64 located in the machine room 30b located in the bottom surface of the second flow path portion 61b in which the entirety is formed, but also includes a portion of the step portion 64 located on the lower side of the opposing portion 37d and the other portion of the step portion 64 located in the portion of the bottom surface of the second flow path portion 61b located in the machine room 30b. In Embodiment 1, the entirety of the step portion 64, that is, the entirety of the step surface 64a, is formed in the portion of the bottom surface of the second flow path portion 61b located in the machine room 30b. The upper end of the step portion 64 is located above the lower end 37e of the facing portion 37d. The upper end of the step portion 64 is disposed at a distance on the upstream side of the facing portion 37d.

[0077] The distance L2 in the extension direction D between the upper end of the step portion 64 and the opposing portion 37d is greater than the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. The shortest distance L1 is the shortest distance between the downstream bottom surface 34f and the lower end 37e of the opposing portion 37d. The shortest distance L1 is the size of the gap G1 in the direction orthogonal to the downstream bottom surface 34f. The distance L3 in the extension direction D between the lower end of the step portion 64 and the opposing portion 37d is smaller than the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. In addition, the shortest distance L1, the distance L2, and the distance L3 are, for example, about 1 mm or more and 30 mm or less.

[0078] In Embodiment 1, the height H of the step portion 64 is more than half of the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. The height H of the step portion 64 is the dimension of the step portion 64 in the direction orthogonal to the downstream bottom surface 34f. In addition, the height H of the step portion 64 is the distance between the upstream bottom surface 34e and the downstream bottom surface 34f in the direction orthogonal to the downstream bottom surface 34f. In particular, in Embodiment 1, the height H of the step portion 64 is greater than the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b.

[0079] like Figure 5As shown, the second drainage flow path portion 62 has a first flow path portion 62a and a second flow path portion 62b. The first flow path portion 62a is formed at the left edge of the bottom of the blower chamber 30a. The first flow path portion 62a extends in the front-to-back direction X. The second flow path portion 62b extends to the right from the rear end portion of the first flow path portion 62a. The second flow path portion 62b is formed at the edge of the rear side (-X side) of the bottom of the blower chamber 30a. The right end portion of the second flow path portion 62b is connected to the drainage hole 38. Water Wb such as condensation water generated on the surface of the heat exchanger 13 flows in the second drainage flow path portion 62. As Fig.14 As shown in FIG. 1 , the bottom surface of the second drainage flow path portion 62 is located at the lower side as it approaches the drainage hole 38. Therefore, the water Wb flowing into the second drainage flow path portion 62 flows along the bottom surface of the second drainage flow path portion 62 to the drainage hole 38. In addition, the water Wb flowing in the second drainage flow path portion 62 also includes, for example, rainwater or the like flowing into the blower chamber 30a from the outside of the outdoor unit 10.

[0080] like Figure 5 As shown, the third drainage flow path portion 63 is formed in the central portion of the left-right direction Y in the bottom of the blower chamber 30a. The rear end portion of the third drainage flow path portion 63 is connected to the drain hole 38. Water Wc such as rainwater that flows into the shell 30 from the blower outlet 10a flows in the third drainage flow path portion 63. Although omitted from the figure, the bottom surface of the third drainage flow path portion 63 is located on the lower side as it faces the drain hole 38. Therefore, the water Wc that flows into the third drainage flow path portion 63 flows along the bottom surface of the third drainage flow path portion 63 to the drain hole 38. In addition, the water Wc flowing in the third drainage flow path portion 63 also includes, for example, rainwater or the like that flows into the blower chamber 30a from a portion other than the blower outlet 10a.

[0081] According to Embodiment 1, the first drainage flow path portion 61 has a second flow path portion 61b as a narrow flow path portion located between a pair of support portions 34c and 34d. The partition member 37 has an opposing portion 37d that is opposed to the upper side of the bottom surface of the second flow path portion 61b in the vertical direction with a gap G1 therebetween. A step portion 64 is formed on the bottom surface of the second flow path portion 61b, and when viewed from the upper side in the vertical direction, the step portion 64 is higher on the side (-D side) away from the drain hole 38 in the extension direction D of the second flow path portion 61b than on the side (+D side) close to the drain hole 38. Therefore, the opposing portion 37d and the step portion 64 are respectively arranged at positions close to each other, and a structure that makes it difficult for small organisms to invade from the inside of the blower room 30a to the inside of the machine room 30b can be appropriately made by the opposing portion 37d and the step portion 64. Thus, it is possible to suppress the invasion of small organisms into the machine room 30b. Therefore, it is possible to suppress the contact of small organisms with the control unit 17. Therefore, it is possible to prevent small living things from coming into contact with the terminal block 17 a and the control substrate 17 b through which electric current flows, and to prevent malfunction of the control unit 17 from occurring.

[0082] On the other hand, water Wa can flow through the gap G1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b, so that water Wa flowing in the second flow path portion 61b can flow to the drain hole 38. Thus, water Wa in the machine room 30b can be discharged to the outside of the housing 30 through the drain hole 38. Therefore, it is possible to suppress the water Wa from continuously accumulating in the housing 30. In Embodiment 1, as described above, a structure in which small organisms are difficult to invade from the blower room 30a into the machine room 30b can be formed by the opposing portion 37d and the step portion 64, so that water Wa can be discharged to the outside of the housing 30 with the gap G1 separated to the extent that water Wa can flow appropriately, and it is possible to suppress the small organisms from invading the machine room 30b.

[0083] Specifically, according to Embodiment 1, the step portion 64 is formed in a portion of the bottom surface of the second flow path portion 61b located in the machine chamber 30b. Fig.16 As shown, it is possible to suppress the intrusion of small organisms C into the machine room 30b. Fig.16 This is a diagram for explaining the effects of the first embodiment. Fig.16 The small organism C shown is, for example, a gecko. Fig.16 As shown, when the organisms C that have entered the blower chamber 30a attempt to move into the machine chamber 30b through the gap G1, the organisms C come into contact with the step portion 64 provided near the facing portion 37d before completing the passage through the gap G1. Fig.16 In the example of FIG. 1 , the state in which the tip of the head CH of the creature C is in contact with the step surface 64a of the step portion 64 is shown when about half of the head CH of the creature C passes through the gap G1. The creature C in contact with the step portion 64 wants to move upward, but since the opposing portion 37d is provided on the upper side, the creature C cannot move upward. Thus, the creature C is prevented from moving through the gap G1 to the machine chamber 30b. Therefore, it is possible to appropriately prevent small creatures C from intruding into the machine chamber 30b.

[0084] In addition, according to Embodiment 1, the height H of the step portion 64 is equal to or greater than half of the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. Therefore, it is possible to prevent the organisms C from crossing the step portion 64 and invading the machine room 30b after contacting the step portion 64. Therefore, it is possible to further prevent small organisms C from invading the machine room 30b.

[0085] Specifically, for example, when the head CH of the living thing C is regarded as a substantially elliptical shape that is long in the horizontal direction, when the short diameter of the head CH is substantially the same as the shortest distance L1, and when the distance from the gap G1 to the extension direction D of the step portion 64 is equal to the long radius of the head CH, the front end of the head CH reaches the step portion 64 in a state where the head CH contacts the lower end of the opposing portion 37d and the bottom surface of the second flow path portion 61b. At this time, if the height H of the step portion 64 is less than half of the shortest distance L1, the front end of the head CH does not contact the step portion 64, and the front end of the head CH easily moves upward. Therefore, the living thing C may easily cross the step portion 64 and enter the machine room 30b. On the other hand, if the height H of the step portion 64 is more than half of the shortest distance L1, the front end of the head CH contacts the step portion 64, and the head CH is in a state of contact at three points: the lower end 37e of the opposing portion 37d, the bottom surface of the second flow path portion 61b, and the step portion 64. Therefore, the tip of the head CH, which is considered to be in a substantially elliptical shape, can be rotated in a direction in which it is difficult to move upward, and the living creature C can be made difficult to climb over the step portion 64. Thus, it is possible to further suppress the intrusion of small living creatures C into the machine chamber 30b.

[0086] In addition, in particular, according to Embodiment 1, the height H of the step portion 64 is greater than the shortest distance L1 between the facing portion 37d and the bottom surface of the second flow path portion 61b. Therefore, it is possible to more appropriately suppress the organisms C from crossing the step portion 64 after contacting the step portion 64 and invading the machine room 30b. Therefore, it is possible to more appropriately suppress the small organisms C from invading the machine room 30b.

[0087] In addition, according to Embodiment 1, the distance L3 between the end of the step portion 64 on the lower side in the vertical direction and the facing portion 37d in the extension direction D is smaller than the shortest distance L1 between the facing portion 37d and the bottom surface of the second flow path portion 61b. Therefore, the head CH of the organism C, which is often long in the horizontal direction, is likely to contact the step portion 64 before passing through the gap G1. Thus, it is possible to more appropriately suppress the head CH from passing through the gap G1. Therefore, it is possible to more appropriately suppress the small organism C from intruding into the machine chamber 30b.

[0088] Furthermore, according to Embodiment 1, the flow path width of the second flow path portion 61b is smaller than the maximum flow path width of the third flow path portion 61c connected to the downstream side of the second flow path portion 61b in the first drainage flow path portion 61. Therefore, it is easy to make the dimension of the flow path width direction at the gap G1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b smaller than the flow path width of the third flow path portion 61c in the blower chamber 30a. Thus, it is possible to further suppress the small organisms C that have invaded the third flow path portion 61c from invading the machine chamber 30b through the gap G1.

[0089] In addition, according to Embodiment 1, the bottom surface of the first drainage flow path portion 61 is located vertically downward toward the drainage hole 38. Therefore, condensation water or the like can be easily caused to flow toward the drainage hole 38 along the bottom surface of the first drainage flow path portion 61. Thus, the water Wa can be appropriately discharged to the outside of the outdoor unit 10 through the drainage hole 38.

[0090] In the first embodiment, the position of the facing portion 37d relative to the step portion 64 may be Fig.15 In this case, the distance L4 in the extension direction D between the upper end of the step portion 64 in the vertical direction and the opposing portion 37d is smaller than the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. Therefore, it is possible to make it more difficult for small organisms C to pass between the step portion 64 and the opposing portion 37d. Thus, it is possible to more appropriately suppress the intrusion of small organisms C into the machine chamber 30b. The distance L4 is, for example, about 1 mm or more and 30 mm or less.

[0091] Implementation Method 2

[0092] Fig.17 This is a cross-sectional view showing a part of the bottom plate portion 234 and a part of the partition member 37 in the second embodiment. Fig.18 It is a diagram for explaining the effects in Embodiment 2. In the following description, about the same structure as that of the above-mentioned embodiment, description may be omitted by appropriately attaching the same reference numerals or the like.

[0093] like Fig.17 As shown, in the outdoor unit 210 of Embodiment 2, the relative position of the step portion 264 with respect to the opposing portion 37d of the partition member 37 in the extension direction D is different from the relative position in the outdoor unit 10 of Embodiment 1. In Embodiment 2, the step portion 264 is formed in the portion of the bottom surface of the second flow path portion 61b located in the blower chamber 30a. In addition, "the step portion 264 is formed in the portion of the bottom surface of the second flow path portion 61b located in the blower chamber 30a" is not limited to the step portion 264 being formed entirely in the portion of the bottom surface of the second flow path portion 61b located in the blower chamber 30a, but also includes a portion of the step portion 264 being located below the opposing portion 37d, and the other portion of the step portion 264 being formed in the portion of the bottom surface of the second flow path portion 61b located in the blower chamber 30a. In Embodiment 2, the upper end of the step portion 264, that is, the upper end of the step surface 264a, is located below the opposing portion 37d, and the rest of the step portion 264 except the upper end is formed in the portion located inside the blower chamber 30a on the bottom surface of the second flow path portion 61b. The step portion 264 has the same structure as the step portion 64 of Embodiment 1 except that the relative position with respect to the extending direction D of the opposing portion 37d is different.

[0094] In Embodiment 2, the upper end of the step portion 264 is arranged below the lower end 37e of the opposing portion 37d with a gap G2 therebetween. That is, in Embodiment 2, a portion of the step portion 264 is located below the opposing portion 37d in the vertical direction. The upper end of the step portion 264 and the side surface 37f of the opposing portion 37d facing the inside of the blower chamber 30a are arranged at approximately the same position as the upper end of the step portion 264 in the extension direction D. Fig.17 For example, the side surface 37f is located slightly downstream (on the +D side) than the upper end of the step portion 264. In addition, the side surface 37f may be located upstream (on the -D side) than the upper end of the step portion 264. The distance L6 in the extension direction D between the side surface 37f and the upper end of the step portion 264 is smaller than the shortest distance L5 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. The shortest distance L5 is the shortest distance between the upstream bottom surface 34e and the lower end 37e of the opposing portion 37d. The shortest distance L5 is the size of the gap G2 in a direction orthogonal to the upstream bottom surface 34e. In addition, the shortest distance L5 is, for example, about 1 mm or more and 30 mm or less. In Fig.17 In the example of , the distance L6 is greater than zero, but the distance L6 may also be zero. The distance L6 is, for example, about 0 mm or more and 30 mm or less.

[0095] The other structures of the bottom plate portion 234 are the same as those of the bottom plate portion 34 in Embodiment 1. The other structures of the outdoor unit 210 are the same as those of the outdoor unit 10 in Embodiment 1.

[0096] According to Embodiment 2, the step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b located in the blower chamber 30a. Fig.18 As shown, when the organism C that has invaded the blower chamber 30a intends to move into the machine chamber 30b through the gap G2, the organism C contacts the step surface 264a of the step portion 264 provided near the opposing portion 37d before entering the gap G2. The organism C that has contacted the step surface 264a of the step portion 264 turns its head CH upward along the step surface 264a, and changes the direction of travel to the upper side. At this time, when viewed from the organism C, the side surface 37f of the opposing portion 37d appears to be the ground in front of the direction of travel, so the organism C easily crosses the gap G2 and moves toward the side surface 37f. Thus, the organism C can be prevented from entering the gap G2. Therefore, it is possible to appropriately prevent small organisms C from invading the machine chamber 30b.

[0097] In addition, the distance L6 between the side surface 37f and the upper end of the step portion 264 in the extension direction D is preferably sufficiently smaller than the size of the gap G2, that is, the shortest distance L5, or is zero. This is because the side surface 37f of the opposing portion 37d can be easily seen from the ground located in front of the traveling direction from the creature C that is in contact with the step portion 264 and has its head CH facing upward along the step portion 264. For example, when the side surface 37f is located on the downstream side (+D side) of the upper end of the step portion 264, if the distance L6 is large, the lower end 37e of the opposing portion 37d is likely to be located in front of the sight of the creature C with its head CH facing upward along the step portion 264, and the creature C may easily enter the gap G2. For example, when the side surface 37f is located on the upstream side (-D side) of the upper end of the step portion 264, if the distance L6 is large, the creature C may easily face the head CH in the direction along the upstream bottom surface 34e by crossing the step portion 264. Therefore, the gap G2 is easily visible in front of the creature C's line of sight, and the creature C may easily enter the gap G2.

[0098] In addition, according to Embodiment 2, a part of the step portion 264 is located below the facing portion 37d in the vertical direction. Therefore, the facing portion 37d and the step portion 264 can be appropriately arranged at close positions. Therefore, a structure that makes it difficult for small organisms to enter the machine room 30b from the blower room 30a can be more appropriately made by the facing portion 37d and the step portion 264.

[0099] As mentioned above, although the embodiment in this disclosure was described, this disclosure is not limited to the structure of each embodiment mentioned above, and the following structure and method can also be adopted.

[0100] The drainage flow path portion (first drainage flow path portion 61) formed across the bottom of the first chamber (blower chamber 30a) and the bottom of the second chamber (machine chamber 30b) may extend in any manner from the second chamber to the drain hole. The drainage flow path portion may extend toward the drain hole and connect to the drain hole after extending in a direction away from the drain hole. The bottom surface of the drainage flow path portion may not be inclined relative to a plane orthogonal to the vertical direction Z. Even in this case, water continues to flow into the drainage flow path portion, whereby the water in the drainage flow path portion is pressed out toward the drain hole and discharged to the outside of the outdoor unit. The drainage flow path portion may be formed arbitrarily. The drainage flow path portion may also be formed, for example, using the frame portion 34b of the bottom plate portion 34 in the above-mentioned embodiment 1. The bottom of the housing of the outdoor unit may also be formed by resin, and the drainage flow path portion may also be formed when the bottom of the housing is resin-molded. The number of drainage holes formed at the bottom of the first chamber may also be two or more.

[0101] As long as the step portion is formed on the bottom surface of the narrow flow path portion (the second flow path portion 61b) located between a pair of support portions, it can be arranged at any relative position relative to the opposing portion. The step portion can also be formed in the portion of the bottom surface of the narrow flow path portion that is opposite to the vertical lower side of the opposing portion. The step portion can also be formed across the portion of the bottom surface of the slit flow path portion located in the first chamber (blower chamber 30a) and the portion located in the second chamber (machine chamber 30b). In this case, the step portion has: a portion located on the vertical lower side of the opposing portion; a portion formed on the portion of the bottom surface of the narrow flow path portion located in the first chamber (blower chamber 30a); and a portion formed on the portion of the bottom surface of the narrow flow path portion located in the second chamber (machine chamber 30b). The step portion can also be located as a whole on the vertical lower side of the opposing portion. The height of the step portion is not particularly limited. The size of the gap between the bottom surface of the narrow flow path portion and the opposing portion is not particularly limited as long as it is a size that water can pass through.

[0102] The refrigeration cycle device disclosed in the present invention can be any device that utilizes a refrigeration cycle for circulating a refrigerant, and is not limited to an air conditioner. The refrigeration cycle device can also be a heat pump water heater, etc. As described above, each structure and each method described in this specification can be appropriately combined within a range that does not contradict each other.

[0103] Description of Reference Numerals

[0104] 10, 210…outdoor unit; 13…heat exchanger; 15…air blower; 17…control unit; 20…indoor unit; 30…housing; 30a…air blower room (first room); 30b…machine room (second room); 34…bottom plate (bottom); 34c, 34d…supporting part; 37…partitioning member; 37d…opposing part; 38…drain hole; 61…first drainage flow path part (drain flow path part); 61b…second flow path part (narrow flow path part); 61c…third flow path part (flow path part); 64, 264…stepped part; 100…refrigeration cycle device; D…extension direction; G1, G2…gap; H…height; L1, L5…shortest distance; Z…vertical direction.

Claims

1. An outdoor unit, which is an outdoor unit of a refrigeration cycle device, characterized in that: have: a housing having a first chamber and a second chamber partitioned from each other by a partition member; a heat exchanger disposed inside the first chamber; an air blower disposed inside the first chamber; and a control unit disposed inside the second chamber, The bottom of the housing is formed with: a drainage hole formed at the bottom of the first chamber; a drainage flow path portion formed across the bottom of the first chamber and the bottom of the second chamber and connected to the drainage hole; and a pair of supporting parts that support the partition member from the lower side in the vertical direction, The drainage flow path portion has a narrow flow path portion located between the pair of support portions. The partition member includes an opposing portion that opposes the upper side in the vertical direction of the bottom surface of the narrow flow path portion via a gap. A step portion is formed on the bottom surface of the narrow flow path portion, and when viewed from above in the vertical direction, the side of the step portion farther from the drain hole is higher than the side closer to the drain hole in the extending direction of the narrow flow path portion.

2. The outdoor unit according to claim 1, characterized in that: The step portion is formed at a portion of the bottom surface of the narrow flow path portion located within the second chamber.

3. The outdoor unit according to claim 2, characterized in that: The height of the step portion is equal to or greater than half of the shortest distance between the facing portion and the bottom surface of the narrow flow path portion.

4. The outdoor unit according to claim 3, characterized in that: The height of the step portion is greater than the shortest distance between the facing portion and the bottom surface of the narrow flow path portion.

5. The outdoor unit according to any one of claims 2 to 4, characterized in that: A distance in the extending direction between a vertically lower end of the step portion and the facing portion is smaller than a shortest distance between the facing portion and a bottom surface of the narrow flow path portion.

6. The outdoor unit according to any one of claims 2 to 5, characterized in that: A distance in the extending direction between an upper end portion of the step portion in the vertical direction and the facing portion is smaller than a shortest distance between the facing portion and a bottom surface of the narrow flow path portion.

7. The outdoor unit according to claim 1, characterized in that: The step portion is formed at a portion of the bottom surface of the narrow flow path portion located within the first chamber.

8. The outdoor unit according to any one of claims 1 to 7, characterized in that: The flow path width of the narrow flow path portion is smaller than the maximum flow path width of a flow path portion connected to the downstream side of the narrow flow path portion in the drainage flow path portion.

9. The outdoor unit according to any one of claims 1 to 8, characterized in that: A portion of the step portion is located below the facing portion in the vertical direction.

10. The outdoor unit according to any one of claims 1 to 9, characterized in that: The bottom surface of the drainage flow path portion is located vertically downward toward the drainage hole.

11. A refrigeration cycle device, characterized in that: have: The outdoor unit according to any one of claims 1 to 10; and Indoor unit.

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