Outdoor unit and refrigeration cycle device

Abstract

One embodiment of an outdoor unit according to the present disclosure is an outdoor unit of a refrigeration cycle device, and comprises a housing having a first chamber and a second chamber that are divided from one another by means of a dividing 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: a drainage hole formed in a bottom portion of the first chamber, a drainage flow passage portion which is formed extending across the bottom portion of the first chamber and the bottom portion of the second chamber and which is joined to the drainage hole, and a pair of supporting portions for supporting the dividing member from below in a vertical direction are formed in a bottom portion of the housing; the drainage flow passage portion has a narrow flow passage portion positioned between the pair of supporting portions; the dividing member has an opposing portion opposing an upper side, in the vertical direction, of a bottom surface of the narrow flow passage portion, across a gap; and a stepped portion that is higher on the side farthest from the drainage hole than on the side closest to the drainage hole, in an extending direction in which the narrow flow passage portion extends, as seen from above in the vertical direction, is formed in the bottom surface of the narrow flow passage portion.

Description

[Technical Field]

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

[0002] For example, as shown in Patent Document 1, an outdoor unit is known in which a drainage channel for draining water such as condensation water is formed in the bottom plate of the housing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3523823 Summary of the Invention [Problem to be solved by the invention]

[0004] In outdoor units such as those described above, there is a risk that small creatures such as reptiles and insects may enter the machine room through the drainage channel. For example, in Patent Document 1, a step is formed in the bottom plate to prevent water such as condensation from flowing out of the heat exchanger mounting surface, but simply providing a step is not enough to prevent small creatures from entering the machine room.

[0005] In view of the above circumstances, one of the objects of the present disclosure is to provide an outdoor unit having a structure that can prevent small organisms from entering the machine room, and a refrigeration cycle device equipped with such an outdoor unit. [Means for solving the problem]

[0006] One aspect of the outdoor unit according to the present disclosure is an outdoor unit for a refrigeration cycle device, the outdoor unit comprising: a housing having a first chamber and a second chamber separated 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 a drainage hole formed in the bottom of the housing; 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 support portions that support the partition member from below 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 has opposing portions that oppose each other via a gap on the vertically upper side of a bottom surface of the narrow flow path portion, and a step portion is formed on the bottom surface of the narrow flow path portion such that the side farther from the drainage hole is higher than the side closer to the drainage hole in an extension direction in which the narrow flow path portion extends as viewed from above in the vertical direction. Crate , The flow path width of the narrow flow path section is smaller than the maximum flow path width of the flow path section of the drainage flow path section that is connected to the downstream side of the narrow flow path section, and the flow path width of the part of the flow path section of the drainage flow path section that is connected to the upstream side of the narrow flow path section that is connected to the narrow flow path section. .

[0007] One aspect of a refrigeration cycle apparatus according to the present disclosure includes an outdoor unit and an indoor unit. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to prevent small organisms from entering the machine room of an outdoor unit of a refrigeration cycle device. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram showing a schematic configuration of a refrigeration cycle device in a first embodiment. [Figure 2] FIG. 1 is a perspective view showing an outdoor unit according to a first embodiment. [Figure 3] FIG. 2 is a perspective view showing a part of the outdoor unit according to the first embodiment. [Figure 4] 1 is a view of a part of the outdoor unit in the first embodiment as seen from the front side. [Figure 5] 1 is a view of a part of the outdoor unit in the first embodiment as seen from above. [Figure 6] FIG. 2 is a perspective view showing a control unit according to the first embodiment. [Figure 7] 2 is a cross-sectional view showing a valve unit and a protective cover according to the first embodiment. FIG. [Figure 8] 2 is a cross-sectional perspective view showing a valve unit and a protective cover according to the first embodiment. FIG. [Figure 9] 3 is a perspective view showing a part of the protective cover and a part of the bottom plate portion in the first embodiment. FIG. [Figure 10] 3 is a perspective view showing a part of a bottom plate portion and a part of a partition member in the first embodiment. FIG. [Figure 11] 11 is a perspective view showing a part of the bottom plate portion and a part of the partition member in the first embodiment, viewed from an angle different from that in FIG. 10. FIG. [Figure 12] 3 is a perspective view showing a part of the bottom plate portion in the first embodiment. FIG. [Figure 13] 13 is a perspective view showing a part of the bottom plate part in the first embodiment, seen from an angle different from that in FIG. 12. FIG. [Figure 14] 3 is a front view of the bottom plate portion according to the first embodiment. FIG. [Figure 15] 7 is a cross-sectional view showing a part of the bottom plate portion and a part of the partition member in the first embodiment, taken along the line XV-XV in FIG. 5. FIG. [Figure 16] FIG. 2 is a diagram for explaining the effect of the first embodiment. [Figure 17] 10 is a cross-sectional view showing a part of the bottom plate portion and a part of the partition member in the second embodiment. FIG. [Figure 18] FIG. 10 is a diagram for explaining the effect of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiments and can be modified as desired within the scope of the technical concept of the present disclosure. In addition, in the following drawings, the scale and number of each structure may differ from the scale and number of the actual structure in order to make each configuration easier to understand.

[0011] The drawings also show the X-axis, Y-axis, and Z-axis as appropriate. The X-axis indicates one of the horizontal directions. The Y-axis indicates the other of the horizontal directions. The Z-axis indicates 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, left-right direction Y, and vertical direction Z are perpendicular to each other. In the following description, the side of the vertical direction Z toward which the arrow of the Z-axis points (+Z side) is referred to as the upper side, and the side of the vertical direction Z opposite to the side toward which the arrow of the Z-axis points (-Z side) is referred to as the lower side. Furthermore, the side of the front-rear direction X toward which the arrow of the X-axis points (+X side) is referred to as the front side, and the side of the front-rear direction X opposite to the side toward which the arrow of the X-axis points (-X side) is referred to as the rear side. The left-right direction Y is the left-right direction when the outdoor unit in the following embodiments is viewed from the front (+X side). That is, the side of the left-right direction Y toward which the Y-axis arrow points (+Y side) is the right side, and the side of the left-right direction Y opposite to the side toward which the Y-axis arrow points (-Y side) is the left side.

[0012] Embodiment 1 FIG. 1 is a schematic diagram showing a general configuration of a refrigeration cycle apparatus 100 in a first embodiment. The refrigeration cycle apparatus 100 is an apparatus that utilizes a refrigeration cycle in which a refrigerant 19 circulates. In the first embodiment, the refrigeration cycle apparatus 100 is an air conditioner. As shown in FIG. 1, the refrigeration cycle apparatus 100 includes an outdoor unit 10, an indoor unit 20, and a circulation path section 18. The outdoor unit 10 is disposed outdoors. The indoor unit 20 is disposed indoors. The outdoor unit 10 and the indoor unit 20 are connected to each other by the circulation path section 18 in which the refrigerant 19 circulates. The outdoor unit 10 and the indoor unit 20 are heat exchange units that exchange heat with the air.

[0013] The refrigeration cycle device 100 can adjust the temperature of the air in the room by exchanging heat between the refrigerant 19 flowing in the circulation path portion 18 and the air in the room where the indoor unit 20 is placed. Examples of the refrigerant 19 include a fluorine-based refrigerant or a hydrocarbon-based refrigerant, which have a low global warming potential (GWP).

[0014] The outdoor unit 10 includes a housing 30, a compressor 12, a heat exchanger 13, a flow rate adjustment valve 14, a blower 15, a four-way valve 16, and a control unit 17. The housing 30 houses the compressor 12, the heat exchanger 13, the flow rate adjustment valve 14, the blower 15, the four-way valve 16, and the control unit 17.

[0015] The compressor 12, the heat exchanger 13, the flow rate control valve 14, and the four-way valve 16 are provided in a portion of the circulation path 18 that is located inside the housing 30. The compressor 12, the heat exchanger 13, the flow rate control valve 14, and the four-way valve 16 are connected by a portion of the circulation path 18 that is located inside the housing 30.

[0016] The four-way valve 16 is provided in a portion of the circulation path section 18 that is connected to the discharge side of the compressor 12. The four-way valve 16 can reverse the direction of the refrigerant 19 flowing through the circulation path section 18 by switching a portion of the path of the circulation path section 18. When the path connected by the four-way valve 16 is the path shown by the solid line on the four-way valve 16 in Fig. 1, the refrigerant 19 flows through the circulation path section 18 in the direction shown by the solid arrow in Fig. 1. On the other hand, when the path connected by the four-way valve 16 is the path shown by the dashed line on the four-way valve 16 in Fig. 1, the refrigerant 19 flows through the circulation path section 18 in the direction shown by the dashed arrow in Fig. 1.

[0017] The indoor unit 20 includes a housing 21, a heat exchanger 22, and a blower 23. The housing 21 houses the heat exchanger 22 and the blower 23. The indoor unit 20 is capable of cooling operation to cool the air in the room where the indoor unit 20 is located, and heating operation to warm the air in the room where the indoor unit 20 is located.

[0018] When the indoor unit 20 is in cooling operation, the refrigerant 19 flowing in the circulation path portion 18 flows in the direction shown by the solid arrow in Fig. 1. In other words, when the indoor unit 20 is in cooling operation, the refrigerant 19 flowing in the circulation path portion 18 circulates through the compressor 12, the heat exchanger 13 of the outdoor unit 10, the flow control valve 14, and the heat exchanger 22 of the indoor unit 20 in that order, before returning to the compressor 12. During 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.

[0019] On the other hand, when the indoor unit 20 is in heating operation, the refrigerant 19 flowing in the circulation path portion 18 flows in the direction shown by the dashed line in Fig. 1. In other words, when the indoor unit 20 is in heating operation, the refrigerant 19 flowing in the circulation path portion 18 circulates through the compressor 12, the heat exchanger 22 of the indoor unit 20, the flow control valve 14, and the heat exchanger 13 of the outdoor unit 10 in that order, before returning to the compressor 12. In 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.

[0020] Next, the outdoor unit 10 will be described in further detail. Fig. 2 is a perspective view showing the outdoor unit 10. Fig. 3 is a perspective view showing a part of the outdoor unit 10. Fig. 4 is a view of a part of the outdoor unit 10 seen from the front side (+X side). Fig. 5 is a view of a part of the outdoor unit 10 seen from above.

[0021] As shown in Fig. 2, the housing 30 of the outdoor unit 10 is in the shape of a substantially rectangular parallelepiped box that is long in the left-right direction Y. The housing 30 has a front panel 31 that forms the front wall of the housing 30, a right side panel 32 that forms the right wall of the housing 30, and a top panel 33 that forms the upper wall of the housing 30. The front panel 31 is formed with an air outlet 10a that opens to the front side (+X side). The air outlet 10a is covered from the front side by a lattice-shaped grill 36 attached to the front panel 31.

[0022] As shown in FIGS. 3 to 5, the housing 30 has a bottom plate portion 34 that forms a lower wall portion of the housing 30, and a partition member 37 that divides 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 with a gap in between in the left-right direction Y. As shown in FIG. 3, the bottom plate portion 34 has a bottom plate main body portion 34a and a frame portion 34b. When viewed in the vertical direction Z, the bottom plate main body portion 34a has a generally rectangular shape that is elongated in the left-right direction Y. The frame portion 34b protrudes upward from the outer edge of the bottom plate main body portion 34a. The frame portion 34b has a rectangular frame shape that is elongated in the left-right direction Y.

[0023] The partition member 37 extends in the vertical direction Z. More specifically, the partition member 37 extends upward from the bottom plate main body portion 34a. As shown in FIG. 5, the rear (-X side) portion of the partition member 37 curves toward the machine chamber 30b (described later), i.e., to the right, when viewed in the vertical direction Z. The partition member 37 has a plate-shaped main body portion 37a that divides the interior of the housing 30. The plate surface of the main body portion 37a faces in a horizontal direction perpendicular to the vertical direction Z. The main body portion 37a has a first portion 37b and a second portion 37c.

[0024] The first portion 37b extends in the front-rear direction X as viewed in the vertical direction Z. A front (+X side) end of the first portion 37b is connected to the front panel 31. The second portion 37c is connected to a rear (-X side) end of the first portion 37b. The second portion 37c extends obliquely with respect to the front-rear direction X and the left-right direction Y. As viewed in the vertical direction Z, the second portion 37c extends rearward and to the right from the rear (-X side) end of the first portion 37b. Note that the rear (-X side) portion of the partition member 37 may or may not be curved toward the blower chamber 30a (described later), i.e., to the left, as viewed in the vertical direction Z.

[0025] The housing 30 has a fan chamber 30a and a machine chamber 30b separated from each other by a partition member 37. In the first embodiment, the fan chamber 30a corresponds to the "first chamber" and the machine chamber 30b corresponds to the "second chamber." The fan chamber 30a and the machine chamber 30b are arranged adjacent to each other in the left-right direction Y. The dimension of the fan chamber 30a in the left-right direction Y is larger than the dimension of the machine chamber 30b in the left-right direction Y. The fan chamber 30a is located to the left of the machine chamber 30b. As shown in FIG. 3, a heat exchanger 13 and a fan 15 are arranged inside the fan chamber 30a.

[0026] In the first embodiment, the heat exchanger 13 has a substantially L-shape 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 of the fan chamber 30a. The right end of the first portion 13a is exposed in the machine chamber 30b. The right end of the first portion 13a is connected to a refrigerant pipe group 40 disposed in the machine chamber 30b. The second portion 13b is disposed at the left end of the fan chamber 30a. In the fan chamber 30a, the fan 15 is disposed in front of the first portion 13a of the heat exchanger 13 and to the right of the second portion 13b of the heat exchanger 13. The heat exchanger 13 may be linear when viewed in the vertical direction Z.

[0027] When blower 15 is driven, air is drawn into blower chamber 30a through an inlet (not shown) provided in the wall on the rear side (-X side) of blower chamber 30a. The air drawn into blower chamber 30a passes through heat exchanger 13 and is blown out of housing 30 through outlet 10a provided in the wall on the front side (+X side) of blower chamber 30a. In this manner, blower 15 delivers air to heat exchanger 13. In the first embodiment, the rear side (-X side) of partition member 37 is curved toward machine chamber 30b. Therefore, the air path through which air delivered by blower 15 passes can be narrowed from the inlet (not shown) to the impeller of blower 15 as it approaches the impeller of blower 15. This improves the air-blowing efficiency of blower 15.

[0028] The compressor 12 and the control unit 17 are arranged inside the machine room 30b. The compressor 12 is arranged in a lower part of the inside of the machine room 30b. The compressor 12 has a generally cylindrical shape extending in the vertical direction Z. The temperature of the refrigerant 19 flowing into the compressor 12 is often lower than the ambient temperature inside the machine room 30b. As a result, condensation may occur on the surface of the compressor 12. Condensation is particularly likely to occur on the suction muffler 12a of the compressor 12 shown in FIG. 5 and on the piping connected to the suction muffler 12a. The condensation is discharged to the outside of the outdoor unit 10 by a first drainage channel 61, which will be described later.

[0029] As shown in FIG. 3, the control unit 17 is disposed in an upper portion inside 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 oversees the overall control of the refrigeration cycle apparatus 100. FIG. 6 is a perspective view showing the control unit 17. The control unit 17 has a terminal block 17a and a control board 17b. Although not shown, a power line that supplies power to the outdoor unit 10 and a connection line that connects the indoor unit 20 and the outdoor unit 10 are connected to the terminal block 17a. The control board 17b is a board that controls each part of the outdoor unit 10. A plurality of electronic components exposed inside the machine room 30b are mounted on the underside of the control board 17b.

[0030] 3, a refrigerant pipe group 40 is arranged inside the machine room 30b. The refrigerant pipe group 40 constitutes part of the circulation path section 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 pipes extending from the indoor unit 20 via a valve unit 50.

[0031] The valve unit 50 connects the refrigerant pipe group 40 and pipes extending from the indoor unit 20. The valve unit 50 has 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 of the bottom plate portion 34. The lower end of the valve fixing portion 53 is fixed to the bottom plate portion 34. The lower end of the valve fixing portion 53 is located inside the frame portion 34b. Figure 7 is a cross-sectional view showing the valve unit 50 and a protective cover 35, which will be described later. As shown in Figure 7, the valve fixing portion 53, together with the right side panel 32, constitutes part of the right wall portion of the housing 30.

[0032] The liquid valve 51 and the gas valve 52 constitute part of the circulation path section 18. The liquid valve 51 and the gas valve 52 are fixed to a valve fixing section 53. The liquid valve 51 and the gas valve 52 protrude to the right from the valve fixing section 53. The liquid valve 51 is located above the gas valve 52. The liquid valve 51 and the gas valve 52 are each connected to a refrigerant pipe 41 of the refrigerant pipe group 40. The liquid valve 51 is connected to a liquid pipe out of the multiple refrigerant pipes 41. The gas valve 52 is connected to a gas pipe out of the multiple refrigerant pipes 41. The liquid valve 51 and the gas valve 52 are located outside the machine room 30b.

[0033] The liquid valve 51 and the gas valve 52 are covered from the right side by a protective cover 35. The protective cover 35 prevents unexpected impacts from being applied to the liquid valve 51 and the gas valve 52. This prevents damage to the liquid valve 51 and the gas valve 52 and prevents the refrigerant 19 from leaking from the liquid valve 51 and the gas valve 52.

[0034] As shown in FIG. 2, the protective cover 35 is attached to the right side surface of the housing 30. The protective cover 35 is attached to the right side panel 32. The protective cover 35 extends in the vertical direction Z. The lower portion of the protective cover 35 is the valve protection portion 35a. The valve protection portion 35a protrudes further to the right than the upper portion of the protective cover 35. FIG. 8 is a cross-sectional perspective view showing the valve unit 50 and the protective cover 35. As shown in FIGS. 7 and 8, the valve protection portion 35a is box-shaped and opens to the left. A portion of the right side panel 32, the valve fixing portion 53, and the valve protection portion 35a form a valve accommodating portion 54 that accommodates the liquid valve 51 and the gas valve 52 therein.

[0035] FIG. 9 is a perspective view showing a portion of the protective cover 35 and a portion of the bottom plate portion 34. As shown in FIG. 9, the protective cover 35 has a drain guide portion 35b that protrudes to the left (-Y side) from the inner surface of the valve protection portion 35a. A drain groove 35c that is recessed downward is formed on the upper surface of the drain guide portion 35b. The drain groove 35c extends in the left-right direction Y. The drain groove 35c opens on the upper and left sides. The bottom surface of the drain groove 35c is an inclined surface that slopes downward toward the left. The left end of the drain groove 35c is located above the first flow path portion 61a of the first drain flow path portion 61, which will be described later. As shown in FIG. 7, the drain guide portion 35b is located below the liquid valve 51 and the gas valve 52.

[0036] During cooling operation, low-temperature liquid refrigerant 19 flows from the outdoor unit 10 to the indoor unit 20. Therefore, the liquid refrigerant 19 cools the liquid valve 51, and the temperature of the liquid valve 51 tends to be lower than that of the outside air. Also, during cooling operation, gaseous refrigerant 19 flows from the indoor unit 20 to the outdoor unit 10 after exchanging heat with the indoor air in the heat exchanger 22 of the indoor unit 20. The temperature of the gaseous refrigerant 19 is often lower than that of the outside air. Therefore, the gaseous refrigerant 19 cools the gas valve 52, and the temperature of the gas valve 52 tends to be lower than that of the outside air. Therefore, condensation is likely to form on the surfaces of the liquid valve 51 and the gas valve 52 during cooling operation.

[0037] Condensation water formed on the surfaces of the liquid valve 51 and the gas valve 52 falls onto the drain guide portion 35b, flows through the drain groove 35c as shown by the two-dot chain line in Fig. 9, and is collected in the machine room 30b. More specifically, the condensation water flowing through 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, which will be described later. This prevents the condensation water formed on the surfaces of the liquid valve 51 and the gas valve 52 from leaking outside the outdoor unit 10 and getting on unexpected objects, etc.

[0038] Note that protective cover 35 has a hole formed therein through which piping extending from indoor unit 20 passes, and rainwater and other water may enter valve housing portion 54 through this hole. In such a case, the rainwater and other water will flow through drain groove 35c to first drainage flow path portion 61. There is no particular limitation on the number of liquid valves 51 or the number of gas valves 52. There is also no particular limitation on the relative positional relationship between liquid valves 51 and gas valves 52. Protective cover 35 may cover liquid valves 51 and gas valves 52 only from below. Even in this case, protective cover 35 can guide condensation water dropping from liquid valves 51 and gas valves 52 to first drainage flow path portion 61, which will be described later.

[0039] Next, the bottom plate portion 34 and the partition member 37 will be described in more detail. Fig. 10 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 portion 34 and a part of the partition member 37, with each part viewed from an angle different from that of Fig. 10. Fig. 12 is a perspective view showing a part of the bottom plate portion 34. Fig. 13 is a perspective view showing a part of the bottom plate portion 34, with the part of the bottom plate portion 34 viewed from an angle different from that of Fig. 12.

[0040] As shown in FIGS. 10 to 13, a pair of support portions 34c, 34d are formed on the bottom plate portion 34. The pair of support portions 34c, 34d are formed on the right side (+Y side) of the bottom plate portion 34. The pair of support portions 34c, 34d protrude upward from the bottom surface of a first drainage channel portion 61 (described later). In the first embodiment, the pair of support portions 34c, 34d are arranged spaced apart in a direction obliquely inclined in the left-right direction Y with respect to the front-rear direction X. The pair of support portions 34c, 34d are respectively arranged at positions supporting the second portion 37c of the partition member 37. The support portion 34c is located to the right (+Y side) and rearward (-X side) of the support portion 34d. The pair of support portions 34c, 34d are arranged across a second channel portion 61b of the first drainage channel portion 61 (described later).

[0041] As shown in Figures 10 and 11, the pair of support portions 34c, 34d support the partition member 37 from below. More specifically, the pair of support portions 34c, 34d support the second portion 37c of the partition member 37 from below. The partition member 37 has a facing portion 37d located between the pair of support portions 34c, 34d. The facing portion 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 facing portion 37d has a trapezoidal shape that narrows downward.

[0042] The portions of the lower end of the partition member 37 supported by the pair of support portions 34c, 34d are in contact with the pair of support portions 34c, 34d. A small gap may be provided between the portions 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 with a sealant.

[0043] As shown in FIG. 5, the bottom plate portion 34 is formed with a drainage hole 38 that penetrates the bottom plate portion 34 in the vertical direction Z. The drainage hole 38 is formed in a portion of the bottom plate portion 34 that forms the bottom of the fan chamber 30a. In the first embodiment, the drainage hole 38 is formed in the center in the left-right direction Y at the rear end (-X side) of the bottom plate main body portion 34a. The drainage hole 38 is a circular hole. In the first embodiment, the rear end of the drainage hole 38 is located below the first portion 13a of the heat exchanger 13.

[0044] Figure 14 is a view of the bottom plate portion 34 as seen from the front side (+X side). As shown in Figure 14, a portion of the bottom plate main body portion 34a is recessed downward. The portion of the bottom plate main body portion 34a where the drainage holes 38 are formed is located at the lowest point. The drainage holes 38 are located above the lower surfaces of the pair of legs 39. The drainage holes 38 face the installation surface on which the outdoor unit 10 is installed, with a small gap between them.

[0045] As shown in FIG. 5, the bottom plate 34 is formed with a first drainage channel portion 61, a second drainage channel portion 62, and a third drainage channel portion 63. The first drainage channel portion 61, the second drainage channel portion 62, and the third drainage channel portion 63 are formed by grooves recessed downward from the upper surface of the bottom plate 34. In the first embodiment, each drainage channel portion is made by forming recesses and projections on the bottom plate 34 made of sheet metal by press working. The first drainage channel portion 61, the second drainage channel portion 62, and the third drainage channel portion 63 are connected to the drainage hole 38. The first drainage channel portion 61 is located to the right of the drainage hole 38. The second drainage channel portion 62 is located to the left of the drainage hole 38. The third drainage channel portion 63 is located in front of the drainage hole 38 (+X side).

[0046] The first drainage channel portion 61 is a drainage channel portion formed across the bottom of the blower chamber 30a and the bottom of the machine chamber 30b. In other words, the first drainage channel portion 61 is formed across the inside of the blower chamber 30a and the inside of the machine chamber 30b. The second drainage channel portion 62 and the third drainage channel portion 63 are drainage channel portions formed at the bottom of the blower chamber 30a. In other words, the second drainage channel portion 62 and the third drainage channel portion 63 are formed inside the blower chamber 30a.

[0047] The first drainage channel 61 includes a first channel 61a formed in the machine chamber 30b, a second channel 61b formed across the blower chamber 30a and the machine chamber 30b, and a third channel 61c formed in the blower chamber 30a. The first channel 61a extends from the right end of the bottom of the machine chamber 30b to the rear (-X side) and left side. As shown in FIG. 9, the left end (-Y side) of the drain groove 35c is located above the right end (+Y side) of the first channel 61a.

[0048] As shown in Fig. 5, the second flow path portion 61b extends leftward from the rear end of the first flow path portion 61a, tilting slightly rearward. The third flow path portion 61c extends leftward from the left end of the second flow path portion 61b. The third flow path portion 61c is provided on the rear edge of the bottom of the blower chamber 30a. The left end of the third flow path portion 61c is connected to the drain hole 38.

[0049] As indicated by the dashed-dotted arrows in FIG. 5 , water Wa, such as condensation water generated on the surfaces of the refrigerant pipe group 40, the liquid valve 51, the gas valve 52, and the compressor 12 in the machine chamber 30b, flows through the first drainage channel section 61. As shown in FIG. 14 , the bottom surface of the first drainage channel section 61 is positioned downward as it approaches the drainage hole 38. Therefore, water Wa that flows into the first drainage channel section 61 flows along the bottom surface of the first drainage channel section 61 to the drainage hole 38 due to its own weight. Water Wa in the valve accommodating section 54, such as condensation water generated on the surfaces of the liquid valve 51 and the gas valve 52, flows from the drain groove 35c into the first channel section 61a of the first drainage channel section 61, flows through the second channel section 61b and the third channel section 61c in this order, and flows to the drainage hole 38.

[0050] In the following description, the upstream side in the flow direction of the water Wa flowing in the first drainage flow path section 61 may be simply referred to as the "upstream side," and the downstream side in the flow direction of the water Wa flowing in the first drainage flow path section 61 may be simply referred to as the "downstream side." Note that the water Wa flowing in the first drainage flow path section 61 also includes water such as rainwater that has flowed into the valve housing section 54 from outside the outdoor unit 10, for example.

[0051] As shown in FIGS. 12 and 13, in the first embodiment, the second flow path section 61b of the first drainage flow path section 61 is a narrow flow path section located between the pair of support members 34c and 34d. The inner side surfaces of the second flow path section 61b in the flow path width direction are formed by the side surfaces of the pair of support members 34c and 34d. The flow path width direction is a direction perpendicular to both the extension direction of the first drainage flow path section 61 and the vertical direction Z when viewed from above. The flow path width of the second flow path section 61b is smaller than the flow path width of the first flow path section 61a at a portion connected to the second flow path section 61b and the flow path width of the third flow path section 61c at a portion connected to the second flow path section 61b. In other words, the flow path width of the first drainage flow path section 61 is smaller at the second flow path section 61b. The flow path width of the second flow path section 61b is smaller than the maximum flow path width of the third flow path section 61c, which is connected to the downstream side of the second flow path section 61b in the first drainage flow path section 61. The maximum flow path width of the third flow path section 61c is, for example, the flow path width CW shown in FIG. 13. The flow path width CW shown in FIG. 13 is the dimension in the front-to-rear direction X of the portion of the third flow path section 61c that is connected to the left side (-Y side) of the left end of a step section 64, which will be described later. The flow path width of the first drainage flow path section 61 is the dimension of the first drainage flow path section 61 in the flow path width direction, which is perpendicular to both the extension direction in which the first drainage flow path section 61 extends and the vertical direction Z, when viewed from above.

[0052] As shown in Figures 10 and 11, the opposing portion 37d of the partition member 37 is inserted from above into the second flow path portion 61b of the first drainage flow path portion 61. In the first embodiment, the opposing portion 37d is fitted into the second flow path portion 61b. Both edge portions of the opposing portion 37d in the flow path width direction of the second flow path portion 61b are in contact with the inner surfaces located on both sides of the second flow path portion 61b in the flow path width direction. The opposing portion 37d faces the upper side of the bottom surface of the second flow path portion 61b across a gap G1. 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.

[0053] As shown in Figures 12 and 13, a step portion 64 is formed on the bottom surface of the second flow path portion 61b of the first drainage flow path portion 61 in the extension direction of the second flow path portion 61b when viewed from above, such that the side farther from the drainage hole 38 is higher than the side closer to the drainage hole 38. The step portion 64 is a step that protrudes upward when traveling from the downstream side to the upstream side within the second flow path portion 61b. In the first embodiment, the step portion 64 extends in a direction obliquely in the left-right direction Y with respect to the front-rear direction X when viewed in the vertical direction Z. Both ends of the step portion 64 are connected to a pair of support portions 34c, 34d, respectively.

[0054] The portion of the bottom surface of the second flow path section 61b that is closer to the first flow path section 61a than the step section 64, i.e., the portion of the bottom surface of the second flow path section 61b that is located upstream of the step section 64, is the upstream bottom surface 34e. The portion of the bottom surface of the second flow path section 61b that is closer to the third flow path section 61c than the step section 64, i.e., the portion of the bottom surface of the second flow path section 61b that is located downstream of the step section 64, is the downstream bottom surface 34f. The upstream bottom surface 34e is located above the downstream bottom surface 34f.

[0055] Fig. 15 is a cross-sectional view showing a part of the bottom plate portion 34 and a part of the partition member 37, and is a cross-sectional view taken along line XV-XV in Fig. 5. 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 the direction in which the second flow path portion 61b extends when viewed from above the vertical direction Z, and is a direction perpendicular to the vertical direction Z. The side toward which the arrow indicating the extension direction D points (+D side) is the downstream side, and the side opposite to the side toward which the arrow indicating the extension direction D points (-D side) is the upstream side.

[0056] As shown in Figure 15, the upstream bottom surface 34e and the downstream bottom surface 34f are slightly inclined with respect to a horizontal plane perpendicular to the vertical direction Z. The upstream bottom surface 34e and the downstream bottom surface 34f are positioned lower as they approach the drainage 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 positioned lower as it approaches the step surface 64a. The downstream bottom surface 34f is positioned lower as it moves away from the step surface 64a.

[0057] The step surface 64a of the step portion 64 is a surface facing downstream and upward. The upper end of the step surface 64a is connected to the downstream end of the upstream 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 upstream end of the downstream 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 downstream (towards +D) in the extension direction D as it extends downward. In the first embodiment, the angle θ formed between the step surface 64a and the downstream bottom surface 34f is an obtuse angle. This makes it easy to form the step portion 64 when making the bottom plate portion 34 out of sheet metal or the like. The angle θ may be 90° or an acute angle. By setting the angle θ to 90° or an acute angle, the effect of preventing small living things C (described later) from entering the machine room 30b can be more suitably obtained.

[0058] The step portion 64 is located upstream (toward the -D direction) of the opposing portion 37d of the partition member 37. As a result, the lower end portion 37e of the opposing portion 37d is disposed above the downstream bottom surface 34f with a gap G1 therebetween. In the first embodiment, the step portion 64 is formed in a portion of the bottom surface of the second flow path portion 61b that is located within the machinery chamber 30b. Note that the phrase "the step portion 64 is formed in a portion of the bottom surface of the second flow path portion 61b that is located within the machinery chamber 30b" does not necessarily mean that the entire step portion 64 is formed in a portion of the bottom surface of the second flow path portion 61b that is located within the machinery chamber 30b, but also means that a portion of the step portion 64 is located below the opposing portion 37d and another portion of the step portion 64 is formed in a portion of the bottom surface of the second flow path portion 61b that is located within the machinery chamber 30b. In the first embodiment, the entire step portion 64, i.e., the entire step surface 64a, is formed in a portion of the bottom surface of the second flow path portion 61b that is located within the machinery chamber 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 located upstream of the facing portion 37d with a gap therebetween.

[0059] The distance L2 in the extension direction D between the upper end of the step portion 64 and the facing portion 37d is greater than the shortest distance L1 between the facing 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 facing portion 37d. The shortest distance L1 is the dimension of the gap G1 in a direction perpendicular 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 facing portion 37d is less than the shortest distance L1 between the facing portion 37d and the bottom surface of the second flow path portion 61b. Note that the shortest distance L1, distance L2, and distance L3 are, for example, approximately 1 mm or more and 30 mm or less.

[0060] In the first embodiment, 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. The height H of the step portion 64 is the dimension of the step portion 64 in a direction perpendicular to the downstream bottom surface 34f. The height H of the step portion 64 is also the distance between the upstream bottom surface 34e and the downstream bottom surface 34f in a direction perpendicular to the downstream bottom surface 34f. In particular, in the first embodiment, 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.

[0061] As shown in FIG. 5, the second drainage channel portion 62 includes a first channel portion 62a and a second channel portion 62b. The first channel portion 62a is formed on the left edge of the bottom of the blower chamber 30a. The first channel portion 62a extends in the front-rear direction X. The second channel portion 62b extends from the rear end of the first channel portion 62a to the right. The second channel portion 62b is formed on the rear (-X) edge of the bottom of the blower chamber 30a. The right end of the second channel 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 through the second drainage channel portion 62. As shown in FIG. 14, the bottom surface of the second drainage channel portion 62 is positioned downward as it approaches the drainage hole 38. Therefore, the water Wb that flows into the second drainage channel portion 62 flows along the bottom surface of the second drainage channel portion 62 to the drainage hole 38. The water Wb flowing through the second drainage channel portion 62 also includes water such as rainwater that has flowed from outside the outdoor unit 10 into the fan chamber 30a.

[0062] As shown in FIG. 5, the third drainage channel section 63 is formed in the center of the bottom of the blower chamber 30a in the left-right direction Y. The rear end of the third drainage channel section 63 is connected to the drainage hole 38. Water We, such as rainwater, that flows into the housing 30 from the air outlet 10a flows through the third drainage channel section 63. Although not shown, the bottom surface of the third drainage channel section 63 is positioned downward as it approaches the drainage hole 38. Therefore, the water We that flows into the third drainage channel section 63 flows along the bottom surface of the third drainage channel section 63 to the drainage hole 38. Note that the water We flowing through the third drainage channel section 63 also includes, for example, water, such as rainwater, that flows into the blower chamber 30a from locations other than the air outlet 10a.

[0063] According to the first embodiment, the first drainage channel section 61 has a second channel section 61b as a narrow channel section located between the pair of support sections 34c, 34d. The partition member 37 has an opposing section 37d that faces the bottom surface of the second channel section 61b on the vertically upper side thereof across a gap G1. The bottom surface of the second channel section 61b has a step section 64 formed thereon, such that the side farther from the drainage hole 38 (-D side) is higher than the side closer to the drainage hole 38 (+D side) in the extension direction D in which the second channel section 61b extends as viewed from above in the vertical direction. Therefore, the opposing section 37d and the step section 64 are located close to each other, and the opposing section 37d and the step section 64 advantageously create a structure that makes it difficult for small organisms to invade from the blower chamber 30a into the machine chamber 30b. This prevents small organisms from invading the machine chamber 30b. This prevents small organisms from coming into contact with the control unit 17. Therefore, it is possible to prevent small living things from coming into contact with the terminal block 17a and the control board 17b through which electricity is flowing, and to prevent malfunctions in the control unit 17.

[0064] On the other hand, water Wa can flow in the gap G1 between the facing portion 37d and the bottom surface of the second flow path portion 61b, and therefore the water Wa flowing in the second flow path portion 61b can flow up to the drain hole 38. This allows the water Wa in the machine chamber 30b to be discharged to the outside of the housing 30 via the drain hole 38. This prevents the water Wa from continuing to accumulate in the housing 30. In the first embodiment, as described above, the facing portion 37d and the step portion 64 form a structure that makes it difficult for small organisms to enter the machine chamber 30b from the blower chamber 30a. Therefore, by leaving the gap G1 large enough to allow the water Wa to flow appropriately, it is possible to discharge the water Wa to the outside of the housing 30, while preventing small organisms from entering the machine chamber 30b.

[0065] Specifically, according to the first embodiment, the step portion 64 is formed on a portion of the bottom surface of the second flow path portion 61b that is located inside the machine chamber 30b. Therefore, as shown in FIG. 16, it is possible to prevent small organisms C from entering the machine chamber 30b. FIG. 16 is a diagram for explaining the effect of the first embodiment. The small organism C shown in FIG. 16 is, for example, a gecko. As shown in FIG. 16, when the organism C that has entered the fan chamber 30a attempts to move through the gap G1 into the machine chamber 30b, the organism C comes into contact with the step portion 64 provided near the facing portion 37d before completely passing through the gap G1. The example in FIG. 16 shows a state in which the head CH of the organism C is about halfway through the gap G1, and the tip of the head CH comes into contact with the step surface 64a of the step portion 64. The organism C that has come into contact with the step portion 64 attempts to move upward, but the facing portion 37d is located above it, preventing the organism C from moving upward. This prevents the living organisms C from passing through the gap G1 and moving into the machine room 30b, thereby effectively preventing small living organisms C from entering the machine room 30b.

[0066] Furthermore, according to the first embodiment, the height H of the step portion 64 is equal to or greater than half 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 organism C from coming into contact with the step portion 64 and then climbing over the step portion 64 to enter the machine room 30b. This further prevents small organisms C from entering the machine room 30b.

[0067] Specifically, for example, if the head CH of the living organism C is considered to have a generally elliptical shape elongated in the horizontal direction, and the minor axis of the head CH is approximately the same as the shortest distance L1, and the distance in the extension direction D from the gap G1 to the step portion 64 is approximately the major axis of the head CH, the tip of the head CH will reach the step portion 64 while contacting the lower end of the opposing portion 37d and the bottom surface of the second flow path portion 61b. If the height H of the step portion 64 is less than half the shortest distance L1, the tip of the head CH will likely move upward without contacting the step portion 64. This could make it easier for the living organism C to climb over the step portion 64 and enter the machine room 30b. On the other hand, if the height H of the step portion 64 is equal to or greater than half the shortest distance L1, the tip of the head CH will contact the step portion 64, and the head CH will be in 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 can be considered to be substantially elliptical in shape, is less likely to rotate in the direction of moving upward, making it more difficult for the living thing C to climb over the step portion 64. This further prevents small living things C from entering the machine room 30b.

[0068] Furthermore, particularly according to the first embodiment, 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. Therefore, it is possible to more effectively prevent the organism C from coming into contact with the step portion 64 and then climbing over the step portion 64 to enter the machine chamber 30b. Therefore, it is possible to more effectively prevent small organisms C from entering the machine chamber 30b.

[0069] Furthermore, according to the first embodiment, the distance L3 in the extension direction D between the vertically lower end of the step portion 64 and the opposing portion 37d is shorter than the shortest distance L1 between the opposing portion 37d and the bottom surface of the second flow path portion 61b. Therefore, the head CH of the living thing C, which is often long in the horizontal direction, is likely to come into contact with the step portion 64 before passing through the gap G1. This more effectively prevents the head CH from passing through the gap G1. Therefore, it is more effectively possible to prevent small living things C from entering the machine room 30b.

[0070] Furthermore, according to the first embodiment, the flow path width of the second flow path section 61b is smaller than the maximum flow path width of the third flow path section 61c, which is connected to the downstream side of the second flow path section 61b in the first drainage flow path section 61. Therefore, the dimension in the flow path width direction of the gap G1 between the opposing section 37d and the bottom surface of the second flow path section 61b can be easily made smaller than the flow path width of the third flow path section 61c in the blower chamber 30a. This further prevents small organisms C that have entered the third flow path section 61c from entering the machine chamber 30b through the gap G1.

[0071] Furthermore, according to the first embodiment, the bottom surface of the first drainage channel portion 61 is positioned vertically downward as it approaches the drainage hole 38. This makes it easier for water Wa, such as condensed water, to flow along the bottom surface of the first drainage channel portion 61 toward the drainage hole 38. This allows the water Wa to be suitably discharged to the outside of the outdoor unit 10 via the drainage hole 38.

[0072] In the first embodiment, the position of the facing portion 37d relative to the step portion 64 may be the position shown by the two-dot chain line in FIG. 15. In this case, the distance L4 in the extension direction D between the vertically upper end of the step portion 64 and the facing portion 37d is shorter than the shortest distance L1 between the facing portion 37d and the bottom surface of the second flow path portion 61b. This makes it more difficult for small organisms C to pass between the step portion 64 and the facing portion 37d. This more effectively prevents small organisms C from entering the machine room 30b. The distance L4 is, for example, approximately 1 mm or more and 30 mm or less.

[0073] Embodiment 2 Fig. 17 is a cross-sectional view showing a part of bottom plate portion 234 and a part of partition member 37 in embodiment 2. Fig. 18 is a diagram for explaining the effect of embodiment 2. In the following explanation, the same components as those in the above-mentioned embodiments may be denoted by the same reference numerals as appropriate, and explanations thereof may be omitted.

[0074] 17, in the outdoor unit 210 of the second embodiment, the relative position of the step portion 264 in the extension direction D with respect to the opposing portion 37d of the partition member 37 differs from that in the outdoor unit 10 of the first embodiment. In the second embodiment, the step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b that is located inside the fan chamber 30a. Note that "the step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b that is located inside the fan chamber 30a" is not limited to the case where the entire step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b that is located inside the fan chamber 30a, but also includes the case where part of the step portion 264 is located below the opposing portion 37d and the other part of the step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b that is located inside the fan chamber 30a. In the second embodiment, the upper end of the stepped portion 264, i.e., the upper end of the stepped surface 264a, is located below the facing portion 37d, and the rest of the stepped portion 264 except for the upper end is formed in a portion of the bottom surface of the second flow path portion 61b that is located inside the blower chamber 30a. The stepped portion 264 has the same configuration as the stepped portion 64 of the first embodiment, except for its position relative to the facing portion 37d in the extension direction D.

[0075] In the second embodiment, the upper end of the step portion 264 is disposed below the lower end 37e of the facing portion 37d with a gap G2 therebetween. That is, in the second embodiment, a portion of the step portion 264 is located vertically below the facing portion 37d. The upper end of the step portion 264 and a side surface 37f of the facing portion 37d that faces the inside of the blower chamber 30a are disposed at approximately the same position in the extension direction D as the upper end of the step portion 264. In FIG. 17 , for example, the side surface 37f is located slightly downstream (+D side) of the upper end of the step portion 264. Note that the side surface 37f may also be located upstream (-D side) of the upper end of the step portion 264. A 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 facing 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 facing portion 37d. The shortest distance L5 is the dimension of the gap G2 in a direction perpendicular to the upstream bottom surface 34e. The shortest distance L5 is, for example, not less than 1 mm and not more than 30 mm. In the example of FIG. 17, the distance L6 is greater than zero, but the distance L6 may also be zero. The distance L6 is, for example, not less than 0 mm and not more than 30 mm.

[0076] Other configurations of the bottom plate portion 234 are the same as other configurations of the bottom plate portion 34 of Embodiment 1. Other configurations of the outdoor unit 210 are the same as other configurations of the outdoor unit 10 of Embodiment 1.

[0077] According to the second embodiment, the step portion 264 is formed in a portion of the bottom surface of the second flow path portion 61b located within the fan chamber 30a. Therefore, as shown in FIG. 18, when a living organism C that has entered the fan chamber 30a attempts to move through the gap G2 into the machine chamber 30b, the living organism C contacts the step surface 264a of the step portion 264 located near the opposing portion 37d before entering the gap G2. Having contacted the step surface 264a of the step portion 264, the living organism C moves its head CH upward along the step surface 264a, changing its direction of movement upward. At this time, from the perspective of the living organism C, the side surface 37f of the opposing portion 37d appears to be the floor ahead of the living organism C, making it easier for the living organism C to cross the gap G2 and move toward the side surface 37f. This prevents the living organism C from entering the gap G2. Therefore, small living organisms C can be effectively prevented from entering the machine chamber 30b.

[0078] It is preferable that the distance L6 in the extension direction D between the side surface 37f and the upper end of the stepped portion 264 is sufficiently smaller than the size of the gap G2, i.e., the shortest distance L5, or be zero. This is because, when viewed from a living organism C in contact with the stepped portion 264 and pointing its head CH upward along the stepped portion 264, the side surface 37f of the facing portion 37d is easily visible on the floor surface ahead in the direction of travel. For example, if the side surface 37f is located downstream (+D side) of the upper end of the stepped portion 264 and the distance L6 is large, the lower end 37e of the facing portion 37d is likely to be located in the line of sight of the living organism C pointing its head CH upward along the stepped portion 264, which may make it easier for the living organism C to enter the gap G2. Furthermore, for example, if the side surface 37f is located upstream (-D side) of the upper end of the stepped portion 264 and the distance L6 is large, the living organism C may be more likely to climb over the stepped portion 264 and point its head CH in a direction along the upstream bottom surface 34e. Therefore, gap G2 becomes more visible to organism C, which may make it easier for organism C to enter gap G2.

[0079] Furthermore, according to the second embodiment, a portion of the step portion 264 is located vertically below the facing portion 37d. This allows the facing portion 37d and the step portion 264 to be located suitably close to each other. This makes it possible to more suitably create a structure that makes it difficult for small creatures to enter the machine room 30b from the fan room 30a by the facing portion 37d and the step portion 264.

[0080] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of the above-described embodiments, and the following configurations and methods may also be adopted.

[0081] The drainage channel portion (first drainage channel 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 direction from the second chamber to the drainage hole. The drainage channel portion may extend away from the drainage hole and then extend toward the drainage hole to connect to the drainage hole. The bottom surface of the drainage channel portion does not have to be inclined with respect to a plane perpendicular to the vertical direction Z. Even in this case, as water continues to flow into the drainage channel portion, the water in the drainage channel portion is pushed out toward the drainage hole and discharged to the outside of the outdoor unit. The drainage channel portion may be formed in any manner. For example, the drainage channel portion may be formed using the frame portion 34b of the bottom plate portion 34 in the first embodiment described above. The bottom of the housing of the outdoor unit may be molded from resin, and the drainage channel portion may be formed when the bottom of the housing is molded from resin. The number of drainage holes formed in the bottom of the first chamber may be two or more.

[0082] The step portion may be disposed at any relative position with respect to the opposing portion, as long as it is formed on the bottom surface of the narrow flow path portion (second flow path portion 61b) located between the pair of support portions. The step portion may be formed on a portion of the bottom surface of the narrow flow path portion facing the vertically lower side of the opposing portion. The step portion may be formed across a portion of the bottom surface of the narrow flow path portion located within the first chamber (blower chamber 30a) and a portion of the bottom surface of the narrow flow path portion located within the second chamber (machine chamber 30b). In this case, the step portion has a portion located vertically below the opposing portion, a portion formed on the portion of the bottom surface of the narrow flow path portion located within the first chamber (blower chamber 30a), and a portion formed on the portion of the bottom surface of the narrow flow path portion located within the second chamber (machine chamber 30b). The entire step portion may be located vertically below 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 large enough for water to pass through.

[0083] The refrigeration cycle device of the present disclosure is not limited to an air conditioner as long as it utilizes a refrigeration cycle in which a refrigerant circulates. The refrigeration cycle device may also be a heat pump water heater, etc. The configurations and methods described in this specification can be combined as appropriate within a range that does not contradict each other. [Explanation of symbols]

[0084] 10,210...outdoor unit, 13...heat exchanger, 15...blower, 17...control unit, 20...indoor unit, 30...casing, 30a...blower chamber (first chamber), 30b...machine chamber (second chamber), 34...bottom plate portion (bottom), 34c, 34d...support portion, 37...partition member, 37d...opposing portion, 38...drainage hole, 61...first drainage flow path portion (drainage flow path portion), 61b...second flow path portion (narrow flow path portion), 61c...third flow path portion (flow path portion), 64,264...step portion, 100...refrigeration cycle device, D...extension direction, G1, G2...gap, H...height, L1, L5...shortest distance, Z...vertical direction

Claims

1. An outdoor unit of a refrigeration cycle device, a housing having a first chamber and a second chamber separated from each other by a partition member; a heat exchanger disposed inside the first chamber; a blower disposed inside the first chamber; a control unit disposed inside the second chamber; Equipped with The bottom of the housing has: a drainage hole formed in the bottom of the first chamber; a drainage channel portion formed across the bottom of the first chamber and the bottom of the second chamber and connected to the drainage hole; a pair of support portions that support the partition member from below in the vertical direction; is formed, The drainage channel portion has a narrow channel portion located between the pair of support portions, the partition member has an opposing portion that faces a bottom surface of the narrow flow path portion on a vertically upper side thereof via a gap, a step portion is formed on the bottom surface of the narrow flow path portion, in an extension direction in which the narrow flow path portion extends as viewed from above in the vertical direction, such that a side farther from the drainage hole is higher than a side closer to the drainage hole, an outdoor unit in which the flow path width of the narrow flow path section is smaller than the maximum flow path width of the flow path section of the drainage flow path section that is connected to the downstream side of the narrow flow path section, and the flow path width of the part of the flow path section of the drainage flow path section that is connected to the narrow flow path section on the upstream side of the narrow flow path section.

2. The outdoor unit according to claim 1 , wherein the step portion is formed in a portion of the bottom surface of the narrow flow passage portion that is located inside the second chamber.

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

4. The outdoor unit according to claim 3 , wherein the height of the step portion is greater than the shortest distance between the opposing portion and the bottom surface of the narrow flow path portion.

5. The outdoor unit according to claim 2 , wherein a distance in the extension direction between a vertically lower end of the step portion and the opposing portion is shorter than a shortest distance between the opposing portion and a bottom surface of the narrow flow path portion.

6. The outdoor unit according to claim 2 , wherein a distance in the extension direction between a vertically upper end of the step portion and the opposing portion is shorter than a shortest distance between the opposing portion and a bottom surface of the narrow flow path portion.

7. The outdoor unit according to claim 1 , wherein the step portion is formed in a portion of the bottom surface of the narrow flow passage portion that is located inside the first chamber.

8. The outdoor unit according to claim 1 , wherein a portion of the step portion is located vertically below the opposing portion.

9. The outdoor unit according to claim 1 , wherein a bottom surface of the drainage channel portion is positioned vertically downward as it approaches the drainage hole.

10. An outdoor unit according to any one of claims 1 to 9; An indoor unit, A refrigeration cycle device comprising:

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