Outdoor machine and refrigeration cycle apparatus

Abstract

An outdoor machine includes a plurality of outdoor units, and a base capable of supporting the plurality of outdoor units. The base is provided with an accommodation space capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units, and an access opening to allow access to the accommodation space from outside of the plurality of outdoor units and the base. The base has a panel capable of opening and closing the access opening.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This nonprovisional application is based on Japanese Patent Application No. 2025-060372 filed on Apr. 1, 2025 with the Japan Patent Office, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTIONField of the Invention

[0002] The present disclosure relates to an outdoor machine and a refrigeration cycle apparatus.Description of the Background Art

[0003] Conventionally, an outdoor machine of a refrigeration cycle apparatus including a plurality of outdoor units and a base to support the plurality of outdoor units has been known.

[0004] Japanese Patent Laying-Open No. 2023-139387 describes a base including a pair of main frames disposed in parallel with each other and a plurality of side frames fixed to the pair of main frames. The base includes a support plate for mounting pipes and wires (hereinafter, sometimes described as pipes and the like).SUMMARY OF THE INVENTION

[0005] The base does not include an opening to allow access to the pipes and the like disposed on the support plate from outside thereof, in a state in which the base supports an outdoor unit. Accordingly, it is difficult to perform maintenance work for the pipes and the like in the base, in the state in which the base supports the outdoor unit.

[0006] A main object of the present disclosure is to provide an outdoor machine and a refrigeration cycle apparatus that enable maintenance work for pipes and the like disposed inside a base, in a state in which the base supports an outdoor unit.

[0007] An outdoor machine according to the present disclosure includes a plurality of outdoor units, and a base capable of supporting the plurality of outdoor units. The base is provided with an accommodation space capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units, and an access opening to allow access to the accommodation space from outside of the plurality of outdoor units and the base. The base has a panel capable of opening and closing the access opening.

[0008] The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a view showing an example of a refrigeration cycle apparatus according to the present embodiment.

[0010] FIG. 2 is a front view showing an example of an outdoor machine according to a first embodiment.

[0011] FIG. 3 is a perspective view showing an example of connection portions between pipes of each of a plurality of outdoor units and pipes accommodated inside a base in the outdoor machine shown in FIG. 2.

[0012] FIG. 4 is an exploded perspective view of the outdoor machine shown in FIG. 2.

[0013] FIG. 5 is an exploded perspective view showing an access opening and a panel of the base of the outdoor machine shown in FIG. 2.

[0014] FIG. 6 is an exploded perspective view showing a state in which parts of the pipes accommodated inside the base of the outdoor machine shown in FIG. 2 are taken out through the access opening.

[0015] FIG. 7 is a plan view showing an example of pipes disposed inside a base so as not to underlie drain holes provided in a drain pan of each of a plurality of outdoor units in an up-down direction, in an outdoor machine according to a second embodiment.

[0016] FIG. 8 is a view showing a modification of the outdoor machine according to the second embodiment.

[0017] FIG. 9 is a side view showing an example of a pipe disposed inside a base in an outdoor machine according to a third embodiment.

[0018] FIG. 10 is a perspective view showing an example of a fixing member to position each of a plurality of outdoor units on a base and fix each of the plurality of outdoor units to the base in an outdoor machine according to a fourth embodiment.

[0019] FIG. 11 is a partially enlarged perspective view for illustrating the fixing member shown in FIG. 10.

[0020] FIG. 12 is a perspective view showing an example of a protection portion to protect an accommodation space of a base between a plurality of outdoor units disposed with a spacing therebetween in a first direction, in an outdoor machine according to a fifth embodiment.

[0021] FIG. 13 is a partially enlarged perspective view of the outdoor machine shown in FIG. 12.

[0022] FIG. 14 is a perspective view showing a modification of the protection portion in the outdoor machine according to the fifth embodiment.

[0023] FIG. 15 is a partially enlarged perspective view of the outdoor machine shown in FIG. 14.DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that, in the following, identical or corresponding parts will be designated by the same reference numerals, and redundant description will not be repeated.Configuration of Refrigeration Cycle Apparatus

[0025] FIG. 1 is a view showing an example of a refrigeration cycle apparatus according to an embodiment of the present disclosure. A refrigeration cycle apparatus 500 shown in FIG. 1 includes an outdoor machine 100, an indoor machine 200, a first connection pipe 300, and a second connection pipe 400.

[0026] Outdoor machine 100 includes a plurality of outdoor units 10A and 10B, and a base 20. The plurality of outdoor units 10A and 10B are connected to base 20 in parallel with each other, for example. The plurality of outdoor units 10A and 10B are connected to indoor machine 200 in parallel with each other, via base 20, for example. Base 20 can support the plurality of outdoor units 10A and 10B.

[0027] The plurality of outdoor units 10A and 10B have the same configuration, for example. Outdoor unit 10A or 10B may be provided as a minimum unit of the outdoor machine. The plurality of outdoor units 10A and 10B may have configurations different from each other.

[0028] Each of the plurality of outdoor units 10A and 10B includes, for example, a compressor 1, an outdoor heat exchanger 2, an expansion device 3, a switching device 4, a first pipe 11, and a second pipe 12. Compressor 1 can compress refrigerant. Compressor 1 is, for example, a rotary compressor, a scroll compressor, a screw compressor, a reciprocating compressor, or the like. Outdoor heat exchanger 2 is provided such that the refrigerant exchanges heat with outdoor air. Expansion device 3 can expand the refrigerant. Expansion device 3 is, for example, an electronic expansion valve (LEV) or a capillary tube. Switching device 4 can switch between flow paths of the refrigerant. Switching device 4 is, for example, a plurality of on-off valves, or a four-way valve or a six-way valve. Through first pipe 11, a gas-phase refrigerant flowing out from each of outdoor units 10A and 10B toward indoor machine 200 or a gas-phase refrigerant flowing into each of outdoor units 10A and 10B from indoor machine 200 flows. Through second pipe 12, a gas-liquid two-phase refrigerant flowing out from each of outdoor units 10A and 10B toward indoor machine 200 or a gas-liquid two-phase refrigerant or a liquid-phase refrigerant flowing into each of outdoor units 10A and 10B from indoor machine 200 flows. First pipe 11 is connected to first connection pipe 300 via a first branch pipe 21 of base 20 described later. Second pipe 12 is connected to second connection pipe 400 via a second branch pipe 22 of base 20 described later.

[0029] Each of the plurality of outdoor units 10A and 10B further includes an outdoor fan 5 capable of blowing the air to outdoor heat exchanger 2.

[0030] Indoor machine 200 includes an indoor heat exchanger 6. Indoor heat exchanger 6 is provided such that the refrigerant exchanges heat with indoor air.

[0031] Indoor machine 200 further includes an indoor fan (not shown) capable of blowing the air to indoor heat exchanger 6.

[0032] Each of first connection pipe 300 and second connection pipe 400 connects outdoor machine 100 and indoor machine 200. Through first connection pipe 300, the gas-phase refrigerant flowing out from outdoor machine 100 toward indoor machine 200 or the gas-phase refrigerant flowing into outdoor machine 100 from indoor machine 200 flows. Through second connection pipe 400, the gas-liquid two-phase refrigerant flowing out from outdoor machine 100 toward indoor machine 200 or the gas-liquid two-phase refrigerant or the liquid-phase refrigerant flowing into outdoor machine 100 from indoor machine 200 flows.

[0033] Base 20 of outdoor machine 100 includes first branch pipe 21 and second branch pipe 22. First branch pipe 21 is connected between first pipe 11 of each of the plurality of outdoor units 10A and 10B and first connection pipe 300. First branch pipe 21 has a plurality of first ends 21A and 21B, a second end 21C, and a branch portion 21D located between the plurality of first ends 21A and 21B and second end 21C. The plurality of first ends 21A and 21B are connected to first pipes 11 of the plurality of outdoor units 10A and 10B, respectively. Second end 21C is connected to first connection pipe 300. Second branch pipe 22 is connected between second pipe 12 of each of the plurality of outdoor units 10A and 10B and second connection pipe 400. Second branch pipe 22 has a plurality of third ends 22A and 22B, a fourth end 22C, and a branch portion 22D located between the plurality of third ends 22A and 22B and fourth end 22C. The plurality of third ends 22A and 22B are connected to second pipes 12 of the plurality of outdoor units 10A and 10B, respectively. Fourth end 22C is connected to second connection pipe 400.

[0034] It should be noted that the plurality of outdoor units 10A and 10B may be connected in series with each other. Each of the plurality of outdoor units 10A and 10B does not need to include switching device 4. The number of outdoor units may be any number equal to or larger than two.

[0035] Hereinafter, embodiments of the outdoor machine will be described.First Embodiment.Configuration of Outdoor Machine

[0036] FIGS. 2-6 are views showing an example of an outdoor machine 101 according to a first embodiment. As shown in FIGS. 2-4, the plurality of outdoor units 10A and 10B are disposed above base 20. The plurality of outdoor units 10A and 10B are fixed to base 20. The plurality of outdoor units 10A and 10B and base 20 may be fixed to each other such that they can be integrally moved (for example, delivered). The plurality of outdoor units 10A and 10B are disposed side by side in a first direction DR1 orthogonal to an up-down direction. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided in a U-shape when viewed from the up-down direction, for example. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B has heat exchange portions disposed to face each other in first direction DR1, for example. In this case, it is preferable that the plurality of outdoor units 10A and 10B are disposed side by side with a spacing therebetween in first direction DR1. It is preferable that a space that can be serve as an air path facing the heat exchange portion of outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided between outdoor unit 10A and outdoor unit 10B in first direction DR1.

[0037] It should be noted that outdoor heat exchanger 2 of each of outdoor units 10A and 10B may be provided in a linear shape or in an L-shape when viewed from the up-down direction.

[0038] Each of the plurality of outdoor units 10A and 10B further includes a casing 13. Casing 13 has a front wall portion and a rear wall portion extending in first direction DR1, and a pair of side wall portions extending in a second direction DR2 orthogonal to each of the up-down direction and first direction DR1. At least a part of the front wall portion of casing 13 can be opened / closed or detached / attached by a maintenance worker.

[0039] An accommodation space 14 capable of accommodating above-described compressor 1, outdoor heat exchanger 2, first pipe 11, second pipe 12, and the like is provided inside casing 13 of each of outdoor units 10A and 10B. In FIG. 3, illustration of a part of casing 13 is omitted.

[0040] Each of the plurality of outdoor units 10A and 10B may further include a drain pan (not shown) disposed below outdoor heat exchanger 2 and the like. The drain pan may be provided with at least one drain hole.

[0041] As shown in FIGS. 2-4, base 20 further includes a casing 23. Casing 23 has a front wall portion and a rear wall portion extending in first direction DR1, and a pair of side wall portions extending in second direction DR2 orthogonal to each of the up-down direction and first direction DR1. An accommodation space 24 capable of accommodating above-described first branch pipe 21, second branch pipe 22, and the like is provided inside casing 23.

[0042] As shown in FIG. 4, accommodation space 24 of base 20 has, for example, a first region 24A disposed below outdoor unit 10A, a second region 24B disposed below outdoor unit 10B, and a third region 24C connecting first region 24A and second region 24B in first direction DR1. First region 24A underlies accommodation space 14 of outdoor unit 10A in the up-down direction. Second region 24B underlies accommodation space 14 of outdoor unit 10B in the up-down direction. Third region 24C underlies a space between casings 13 of outdoor units 10A and 10B in first direction DR1, in the up-down direction.

[0043] As shown in FIG. 4, first end 21A of first branch pipe 21 and third end 22A of second branch pipe 22 are disposed in first region 24A. First end 21B of first branch pipe 21 and third end 22B of second branch pipe 22 are disposed in second region 24B. Second end 21C of first branch pipe 21 and fourth end 22C of second branch pipe 22 are disposed in second region 24B. A part of each of first branch pipe 21 and second branch pipe 22 extends through third region 24C.

[0044] Base 20 is provided with a connection opening 25 through which first connection pipe 300 connected to second end 21C of first branch pipe 21 and second connection pipe 400 connected to fourth end 22C of second branch pipe 22 pass. Base 20 may be provided with a connection opening through which first connection pipe 300 connected to second end 21C of first branch pipe 21 passes, and a connection opening through which second connection pipe 400 connected to fourth end 22C of second branch pipe 22 passes, independently of each other.

[0045] FIGS. 5 and 6 are views showing an example of base 20 of outdoor machine 101. In FIGS. 5 and 6, illustration of the plurality of outdoor units 10A and 10B is omitted.

[0046] As shown in FIGS. 5 and 6, base 20 is further provided with an access opening 26 to allow access to accommodation space 24 from outside of the plurality of outdoor units 10A and 10B and base 20. In the present specification, a structure to allow access to accommodation space 24 means a structure to allow a hand of the maintenance worker or a tool operated by the maintenance worker to reach the inside of accommodation space 24 from the outside of the plurality of outdoor units 10A and 10B and base 20, without passing through accommodation space 14 of each of the plurality of outdoor units 10A and 10B. Preferably, access opening 26 extends along first direction DR1. Preferably, the opening width of access opening 26 in first direction DR1 is wider than the opening width of access opening 26 in the up-down direction. Access opening 26 is provided in at least the front wall portion of casing 23.

[0047] Preferably, access opening 26 allows access to each of the plurality of first ends 21A and 21B and second end 21C of first branch pipe 21 and the plurality of third ends 22A and 22B and fourth end 22C of second branch pipe 22.

[0048] Preferably, access opening 26 allows access to each of first region 24A, second region 24B, and third region 24C of accommodation space 24.

[0049] Base 20 includes at least one panel 27 capable of opening and closing access opening 26. At least one panel 27 is provided so as not to close connection opening 25.

[0050] Base 20 includes, for example, a plurality of panels 27 capable of opening and closing access opening 26. The plurality of panels 27 have a first panel 27A and a second panel 27B. First panel 27A is a member different from second panel 27B. First panel 27A and second panel 27B can open and close different opening regions of access opening 26, independently of each other. First panel 27A can open and close, for example, an opening region that is contiguous to first region 24A and third region 24C of accommodation space 24 in second direction DR2, of access opening 26. Second panel 27B can open and close, for example, an opening region that is contiguous to second region 24B of accommodation space 24 in second direction DR2, of access opening 26.

[0051] Preferably, base 20 further includes at least one fixing portion 28 capable of fixing at least one panel 27 to casing 23. Fixing portion 28 fixes panel 27 to casing 23 such that panel 27 can be opened / closed or detached / attached. Fixing portion 28 includes, for example, at least one of a screw and a hinge. Base 20 includes, for example, a plurality of fixing portions 28 capable of fixing first panel 27A to casing 23, and a plurality of fixing portions 28 capable of fixing second panel 27B to casing 23. It should be noted that, in FIGS. 5 and 6, illustration of some of the plurality of fixing portions 28 is omitted.

[0052] Preferably, access opening 26 is provided so as to be contiguous to connection opening 25. Preferably, in a state in which panel 27 opens access opening 26, access opening 26 and connection opening 25 are provided so as to form one opening.

[0053] From a different viewpoint, base 20 is provided with an opening 29. A part of opening 29 is provided as connection opening 25. The remaining part of opening 29 is provided as access opening 26. Panel 27 is provided so as to open and close only access opening 26 of opening 29.

[0054] As shown in FIG. 6, preferably, access opening 26 has a size that allows each of first branch pipe 21 and the second branch pipe to be taken in and out therethrough. Preferably, entire first branch pipe 21 can be taken in and out through access opening 26. Preferably, entire second branch pipe 22 can be taken in and out through access opening 26.Effects

[0055] In outdoor machine 101, base 20 is provided with accommodation space 24 capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units 10A and 10B, and access opening 26 to allow access to accommodation space 24 from the outside of the plurality of outdoor units 10A and 10B and base 20. Base 20 has panel 27 capable of opening and closing access opening 26. Accordingly, in outdoor machine 101, it is possible to perform maintenance work for the pipes and the like disposed inside base 20, in a state in which base 20 supports outdoor units 10A and 10B.

[0056] In outdoor machine 101, outdoor unit 10A or 10B may be provided as a minimum unit of the outdoor machine. Outdoor units 10A and 10B may have the same configuration. Thereby, the number of components that are common between the outdoor units can be increased. Further, in outdoor machine 101, it is possible to change the capacity of outdoor machine 101 in a stepwise manner, in accordance with the number of outdoor units 10A and 10B that are made common to each other. In outdoor machine 101, it is possible to easily realize a lineup of outdoor machines having different capabilities by appropriately combining the outdoor units that are made common and a plurality of types of base 20 capable of supporting different numbers of such outdoor units.

[0057] In outdoor machine 101, two outdoor units 10A and 10B may be disposed with a spacing therebetween in first direction DR1. In this case, the outdoor air can be sent from the space between casings 13 of two outdoor units 10A and 10B to outdoor heat exchanger 2 of each of two outdoor units 10A and 10B. Accordingly, heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B can be improved, when compared with a case where two outdoor units 10A and 10B are disposed without a spacing therebetween in first direction DR1.

[0058] In outdoor machine 101, since a load can be distributed to the outdoor units, performance can be improved. Furthermore, in outdoor machine 101, since a plurality of compressors are used, the amount of displacement of the refrigerant can be increased and the amount of circulation of the refrigerant can be increased, when compared with a case where only one compressor is used.

[0059] In outdoor machine 101, when the plurality of outdoor units 10A and 10B and base 20 are coupled to be integrally movable, the number of man-hours for installation work can be reduced and workability of outdoor machine 101 can be improved, when compared with a case where the plurality of outdoor units and the base are coupled at a location where outdoor machine 101 is to be installed.Second Embodiment.

[0060] An outdoor machine according to a second embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0061] FIG. 7 is a view for illustrating the positional relation in the up-down direction between first branch pipe 21 and second branch pipe 22 accommodated inside base 20 and drain holes 15 provided in a drain pan of each of a plurality of outdoor units, in the outdoor machine according to the second embodiment. In FIG. 7, outdoor heat exchanger 2 of each of outdoor units 10A and 10B is indicated by a broken line.

[0062] As shown in FIG. 7, each of the plurality of outdoor units is provided with a plurality of drain holes 15. The plurality of drain holes 15 are disposed mainly below outdoor heat exchanger 2. The plurality of outdoor units have the same configuration, for example. In each of the plurality of outdoor units, the plurality of drain holes 15 have the same configuration, for example.

[0063] Each of first branch pipe 21 and second branch pipe 22 is disposed so as not to underlie the plurality of drain holes 15 in the up-down direction.

[0064] For example, when first branch pipe 21 or second branch pipe 22 is disposed so as to underlie the plurality of drain holes 15 in the up-down direction, drained water from drain holes 15 is cooled by first branch pipe 21 or second branch pipe 22 to form an ice column, and this ice column may damage first branch pipe 21 or second branch pipe 22. On the other hand, in the outdoor machine according to the second embodiment, each of first branch pipe 21 and second branch pipe 22 is disposed so as not to underlie the plurality of drain holes 15 in the up-down direction, and thus it is possible to suppress occurrence of defects such as damage and rupture in first branch pipe 21 and second branch pipe 22 due to drained water from drain holes 15.

[0065] Preferably, the pipes and wires accommodated in accommodation space 24 of base 20 are disposed so as not to underlie the plurality of drain holes 15 in the up-down direction. This can suppress occurrence of defects such as damage and rupture in the pipes and wires due to drained water from drain holes 15.Modification

[0066] FIG. 8 is a view for illustrating a modification of the outdoor machine according to the second embodiment. As shown in FIG. 8, in the outdoor machine according to the second embodiment, at least one of first branch pipe 21 and second branch pipe 22 may be disposed so as to underlie only a part of the plurality of drain holes 15 in the up-down direction. It is only necessary that, among the plurality of drain holes 15, the number of drain holes 15 overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction is smaller than the number of drain holes 15 not overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction. In this case, it is only necessary that each of the plurality of outdoor units 10A and 10B has a closing member 17 to close drain hole 15 overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction, among the plurality of drain holes 15. Closing member 17 prevents water from being drained from drain hole 15 to accommodation space 24 of base 20. This can also suppress occurrence of defects such as damage and rupture in the pipes and wires due to drained water from drain hole 15.Third Embodiment

[0067] An outdoor machine according to a third embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0068] FIG. 9 is a partially enlarged side view of second branch pipe 22 accommodated inside base 20 in the outdoor machine according to the third embodiment.

[0069] As shown in FIG. 9, second branch pipe 22 further has a T-shaped portion 22E. T-shaped portion 22E is located between branch portion 22D and fourth end 22C.

[0070] T-shaped portion 22E has a first opening end 22E1, a second opening end 22E2, and a third opening end 22E3. First opening end 22E1 is connected to the plurality of third ends 22A and 22B via branch portion 22D. Second opening end 22E2 is connected to fourth end 22C. Third opening end 22E3 is closed. Second opening end 22E2 and third opening end 22E3 face opposite to each other.

[0071] As shown in FIG. 9, first opening end 22E1 may face upward. Second opening end 22E2 and third opening end 22E3 may face opposite to each other in a horizontal direction. It should be noted that first opening end 22E1 may face in the horizontal direction.

[0072] In the outdoor machine according to the third embodiment, mixing of a gas refrigerant and a liquid refrigerant in a gas-liquid two-phase refrigerant flowing through second branch pipe 22 is promoted at T-shaped portion 22E of second branch pipe 22. Accordingly, a deviation in the mixing ratio between the gas refrigerant and the liquid refrigerant is less likely to occur between the gas-liquid two-phase refrigerants distributed from second end 21C to the plurality of first ends 21A and 21B via branch portion 22D. In the outdoor machine according to the third embodiment, it is possible to suppress occurrence of a deviation in the distribution of the gas-liquid two-phase refrigerant from base 20 to each of outdoor units 10A and 10B.

[0073] Preferably, second branch pipe 22 does not have an L-shaped portion bent in an L-shape between branch portion 22D and T-shaped portion 22E. If second branch pipe 22 has an L-shaped portion instead of T-shaped portion 22E, a centrifugal force acting on the liquid refrigerant having a high density, in the gas-liquid two-phase refrigerant flowing through the L-shaped portion, is larger than a centrifugal force acting on the gas refrigerant having a low density. In this case, the gas-liquid two-phase refrigerant in which gas-liquid separation is promoted at the L-shaped portion is distributed to each of outdoor units 10A and 10B at branch portion 22D, and thus the deviation in the mixing ratio is likely to occur between the gas-liquid two-phase refrigerants flowing into outdoor units 10A and 10B. On the other hand, in outdoor machine 104 in which second branch pipe 22 does not have an L-shaped portion between branch portion 22D and T-shaped portion 22E, it is possible to more effectively suppress occurrence of the deviation of the mixing ratio between the gas-liquid two-phase refrigerants flowing into outdoor units 10A and 10B.

[0074] More preferably, second branch pipe 22 does not have an L-shaped portion between branch portion 22D and fourth end 22C. It should be noted that second branch pipe 22 may have an L-shaped portion between T-shaped portion 22E and fourth end 22C. Second branch pipe 22 may have an L-shaped portion between branch portion 22D and each of the plurality of third ends 22A and 22B.

[0075] First branch pipe 21 does not have a T-shaped portion, for example. It should be noted that first branch pipe 21 may have a T-shaped portion.Fourth Embodiment

[0076] An outdoor machine according to a fourth embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0077] FIGS. 10 and 11 are views showing an example of an outdoor machine 104 according to the fourth embodiment. FIG. 11 is a partially enlarged perspective view showing a state achieved when outdoor unit 10A is positioned with respect to base 20 by a fixing member 30 shown in a region XI in FIG. 10. As shown in FIGS. 10 and 11, outdoor machine 104 further includes a plurality of fixing members 30 capable of positioning each of the plurality of outdoor units 10A and 10B on base 20 and fixing each of the plurality of outdoor units 10A and 10B to base 20. The plurality of fixing members 30 can position casing 13 of each of the plurality of outdoor units 10A and 10B on casing 23 of base 20, and fix casing 13 to casing 23, for example.

[0078] Each of casing 13 and casing 23 is provided with a plurality of through holes through which the plurality of fixing members 30 are passed respectively. Casing 13 is provided with a plurality of through holes 13H (see FIG. 11). Casing 23 is provided with a plurality of through holes 23H (see FIG. 11). When casing 13 is appropriately disposed with respect to casing 23, the plurality of through holes 13H in casing 13 are provided so as to overlap the plurality of through holes 23H in casing 23 in the up-down direction. The opening area of each of the plurality of through holes 13H is larger than the opening area of each of the plurality of through holes 23H, for example.

[0079] The plurality of fixing members 30 each include a male screw portion and a female screw portion, for example. The male screw portion is included in a bolt and is connected to a head portion of the bolt, for example. The female screw portion is a nut, for example. The male screw portion is passed through the through hole in each of casing 13 and casing 23. The head portion of the bolt is disposed below through hole 23H in casing 23, for example. The nut is screwed onto the male screw portion above through hole 13H in casing 13, for example. It should be noted that, in FIGS. 10 and 11, illustration of the male screw portion and the female screw portion is omitted.

[0080] Preferably, the plurality of fixing members 30 can be positioned in the plurality of through holes in casing 23, respectively, in a state in which the plurality of fixing members 30 are not passed through the plurality of through holes in casing 13, respectively. For example, each of the plurality of through holes in casing 23 may be provided as a female screw portion to be screwed onto the male screw portion of each of the plurality of fixing members 30.

[0081] Outdoor machine 104 can be installed in the following procedure.

[0082] Firstly, base 20 is disposed at a location where outdoor machine 104 is to be installed. The plurality of fixing members 30 are positioned in the plurality of through holes in casing 23 of base 20.

[0083] Secondly, the plurality of fixing members 30 protruding upward from the plurality of through holes in casing 23 of base 20, respectively, are passed through the plurality of through holes in casing 13 of each of the plurality of outdoor units 10A and 10B, to position the plurality of outdoor units 10A and 10B on base 20.

[0084] Thirdly, casing 13 of each of the plurality of outdoor units 10A and 10B is fixed to casing 23 of base 20 by the plurality of fixing members 30.

[0085] Thereby, outdoor machine 104 can be easily installed at its installation location.

[0086] It should be noted that the plurality of through holes in casing 13 may be provided as female screw portions of the plurality of fixing members 30. The plurality of fixing members 30 may be capable of fixing the plurality of outdoor units 10A and 10B and base 20 such that they can be integrally moved.Fifth Embodiment

[0087] An outdoor machine according to a fifth embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0088] FIGS. 12 and 13 are views showing an example of an outdoor machine 105 according to the fifth embodiment. As shown in FIGS. 12 and 13, outdoor machine 105 further includes a protection portion 40 capable of protecting accommodation space 24 of base 20 between two outdoor units 10A and 10B adjacent to each other with a spacing therebetween in first direction DR1. Protection portion 40 can restrict an article and a human body part (for example, a finger) disposed around outdoor machine 105 from reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B. Protection portion 40 can protect third region 24C of accommodation space 24 of base 20.

[0089] Protection portion 40 can be attached to and detached from base 20, for example. Protection portion 40 can protect third region 24C of accommodation space 24 of base 20 when it is attached to base 20.

[0090] As shown in FIGS. 12 and 13, protection portion 40 includes a net-like member 41, for example. Net-like member 41 includes a plurality of metal lines extending in directions intersecting with each other, for example. Preferably, in net-like member 41, the plurality of metal lines extending in the directions intersecting with each other are joined to each other at intersections. Net-like member 41 can restrict an article and a human body part disposed around outdoor machine 105 from reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B. Net-like member 41 is provided with a plurality of openings smaller than a finger of a human.

[0091] Preferably, protection portion 40 further includes a drain pan 42 located below net-like member 41. Drain pan 42 is provided so as to cover the pipes and wires disposed in third region 24C of accommodation space 24, and is provided so as to receive water entering third region 24C from the plurality of openings provided in net-like member 41.

[0092] In outdoor machine 105, it is possible to prevent occurrence of defects caused by an article and a human body part disposed around outdoor machine 105 reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B, by means of protection portion 40, while improving heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B.Modification

[0093] FIGS. 14 and 15 are views showing a modification of protection portion 40 in outdoor machine 105. As shown in FIGS. 14 and 15, in outdoor machine 105, protection portion 40 may include a plate-like member 43 instead of net-like member 41. Preferably, plate-like member 43 has an upper surface inclined with respect to the horizontal direction. This can also prevent occurrence of defects caused by an article and a human body part disposed around outdoor machine 105 reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B, by means of protection portion 40, while improving heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B.

[0094] Although the embodiments of the present invention have been described, it should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the scope of the claims, and is intended to include any modifications within the scope and meaning equivalent to the scope of the claims.

Examples

first embodiment

Configuration of Outdoor Machine

[0036]FIGS. 2-6 are views showing an example of an outdoor machine 101 according to a first embodiment. As shown in FIGS. 2-4, the plurality of outdoor units 10A and 10B are disposed above base 20. The plurality of outdoor units 10A and 10B are fixed to base 20. The plurality of outdoor units 10A and 10B and base 20 may be fixed to each other such that they can be integrally moved (for example, delivered). The plurality of outdoor units 10A and 10B are disposed side by side in a first direction DR1 orthogonal to an up-down direction. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided in a U-shape when viewed from the up-down direction, for example. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B has heat exchange portions disposed to face each other in first direction DR1, for example. In this case, it is preferable that the plurality of outdoor units 10A and 10B are disposed side by side with a spacing therebetwee...

second embodiment

[0060]An outdoor machine according to a second embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0061]FIG. 7 is a view for illustrating the positional relation in the up-down direction between first branch pipe 21 and second branch pipe 22 accommodated inside base 20 and drain holes 15 provided in a drain pan of each of a plurality of outdoor units, in the outdoor machine according to the second embodiment. In FIG. 7, outdoor heat exchanger 2 of each of outdoor units 10A and 10B is indicated by a broken line.

[0062]As shown in FIG. 7, each of the plurality of outdoor units is provided with a plurality of drain holes 15. The plurality of drain holes 15 a...

third embodiment

[0067]An outdoor machine according to a third embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0068]FIG. 9 is a partially enlarged side view of second branch pipe 22 accommodated inside base 20 in the outdoor machine according to the third embodiment.

[0069]As shown in FIG. 9, second branch pipe 22 further has a T-shaped portion 22E. T-shaped portion 22E is located between branch portion 22D and fourth end 22C.

[0070]T-shaped portion 22E has a first opening end 22E1, a second opening end 22E2, and a third opening end 22E3. First opening end 22E1 is connected to the plurality of third ends 22A and 22B via branch portion 22D. Second opening end 22E2 is co...

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This nonprovisional application is based on Japanese Patent Application No. 2025-060372 filed on Apr. 1, 2025 with the Japan Patent Office, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTIONField of the Invention

[0002] The present disclosure relates to an outdoor machine and a refrigeration cycle apparatus.Description of the Background Art

[0003] Conventionally, an outdoor machine of a refrigeration cycle apparatus including a plurality of outdoor units and a base to support the plurality of outdoor units has been known.

[0004] Japanese Patent Laying-Open No. 2023-139387 describes a base including a pair of main frames disposed in parallel with each other and a plurality of side frames fixed to the pair of main frames. The base includes a support plate for mounting pipes and wires (hereinafter, sometimes described as pipes and the like).SUMMARY OF THE INVENTION

[0005] The base does not include an opening to allow access to the pipes and the like disposed on the support plate from outside thereof, in a state in which the base supports an outdoor unit. Accordingly, it is difficult to perform maintenance work for the pipes and the like in the base, in the state in which the base supports the outdoor unit.

[0006] A main object of the present disclosure is to provide an outdoor machine and a refrigeration cycle apparatus that enable maintenance work for pipes and the like disposed inside a base, in a state in which the base supports an outdoor unit.

[0007] An outdoor machine according to the present disclosure includes a plurality of outdoor units, and a base capable of supporting the plurality of outdoor units. The base is provided with an accommodation space capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units, and an access opening to allow access to the accommodation space from outside of the plurality of outdoor units and the base. The base has a panel capable of opening and closing the access opening.

[0008] The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a view showing an example of a refrigeration cycle apparatus according to the present embodiment.

[0010] FIG. 2 is a front view showing an example of an outdoor machine according to a first embodiment.

[0011] FIG. 3 is a perspective view showing an example of connection portions between pipes of each of a plurality of outdoor units and pipes accommodated inside a base in the outdoor machine shown in FIG. 2.

[0012] FIG. 4 is an exploded perspective view of the outdoor machine shown in FIG. 2.

[0013] FIG. 5 is an exploded perspective view showing an access opening and a panel of the base of the outdoor machine shown in FIG. 2.

[0014] FIG. 6 is an exploded perspective view showing a state in which parts of the pipes accommodated inside the base of the outdoor machine shown in FIG. 2 are taken out through the access opening.

[0015] FIG. 7 is a plan view showing an example of pipes disposed inside a base so as not to underlie drain holes provided in a drain pan of each of a plurality of outdoor units in an up-down direction, in an outdoor machine according to a second embodiment.

[0016] FIG. 8 is a view showing a modification of the outdoor machine according to the second embodiment.

[0017] FIG. 9 is a side view showing an example of a pipe disposed inside a base in an outdoor machine according to a third embodiment.

[0018] FIG. 10 is a perspective view showing an example of a fixing member to position each of a plurality of outdoor units on a base and fix each of the plurality of outdoor units to the base in an outdoor machine according to a fourth embodiment.

[0019] FIG. 11 is a partially enlarged perspective view for illustrating the fixing member shown in FIG. 10.

[0020] FIG. 12 is a perspective view showing an example of a protection portion to protect an accommodation space of a base between a plurality of outdoor units disposed with a spacing therebetween in a first direction, in an outdoor machine according to a fifth embodiment.

[0021] FIG. 13 is a partially enlarged perspective view of the outdoor machine shown in FIG. 12.

[0022] FIG. 14 is a perspective view showing a modification of the protection portion in the outdoor machine according to the fifth embodiment.

[0023] FIG. 15 is a partially enlarged perspective view of the outdoor machine shown in FIG. 14.DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be noted that, in the following, identical or corresponding parts will be designated by the same reference numerals, and redundant description will not be repeated.Configuration of Refrigeration Cycle Apparatus

[0025] FIG. 1 is a view showing an example of a refrigeration cycle apparatus according to an embodiment of the present disclosure. A refrigeration cycle apparatus 500 shown in FIG. 1 includes an outdoor machine 100, an indoor machine 200, a first connection pipe 300, and a second connection pipe 400.

[0026] Outdoor machine 100 includes a plurality of outdoor units 10A and 10B, and a base 20. The plurality of outdoor units 10A and 10B are connected to base 20 in parallel with each other, for example. The plurality of outdoor units 10A and 10B are connected to indoor machine 200 in parallel with each other, via base 20, for example. Base 20 can support the plurality of outdoor units 10A and 10B.

[0027] The plurality of outdoor units 10A and 10B have the same configuration, for example. Outdoor unit 10A or 10B may be provided as a minimum unit of the outdoor machine. The plurality of outdoor units 10A and 10B may have configurations different from each other.

[0028] Each of the plurality of outdoor units 10A and 10B includes, for example, a compressor 1, an outdoor heat exchanger 2, an expansion device 3, a switching device 4, a first pipe 11, and a second pipe 12. Compressor 1 can compress refrigerant. Compressor 1 is, for example, a rotary compressor, a scroll compressor, a screw compressor, a reciprocating compressor, or the like. Outdoor heat exchanger 2 is provided such that the refrigerant exchanges heat with outdoor air. Expansion device 3 can expand the refrigerant. Expansion device 3 is, for example, an electronic expansion valve (LEV) or a capillary tube. Switching device 4 can switch between flow paths of the refrigerant. Switching device 4 is, for example, a plurality of on-off valves, or a four-way valve or a six-way valve. Through first pipe 11, a gas-phase refrigerant flowing out from each of outdoor units 10A and 10B toward indoor machine 200 or a gas-phase refrigerant flowing into each of outdoor units 10A and 10B from indoor machine 200 flows. Through second pipe 12, a gas-liquid two-phase refrigerant flowing out from each of outdoor units 10A and 10B toward indoor machine 200 or a gas-liquid two-phase refrigerant or a liquid-phase refrigerant flowing into each of outdoor units 10A and 10B from indoor machine 200 flows. First pipe 11 is connected to first connection pipe 300 via a first branch pipe 21 of base 20 described later. Second pipe 12 is connected to second connection pipe 400 via a second branch pipe 22 of base 20 described later.

[0029] Each of the plurality of outdoor units 10A and 10B further includes an outdoor fan 5 capable of blowing the air to outdoor heat exchanger 2.

[0030] Indoor machine 200 includes an indoor heat exchanger 6. Indoor heat exchanger 6 is provided such that the refrigerant exchanges heat with indoor air.

[0031] Indoor machine 200 further includes an indoor fan (not shown) capable of blowing the air to indoor heat exchanger 6.

[0032] Each of first connection pipe 300 and second connection pipe 400 connects outdoor machine 100 and indoor machine 200. Through first connection pipe 300, the gas-phase refrigerant flowing out from outdoor machine 100 toward indoor machine 200 or the gas-phase refrigerant flowing into outdoor machine 100 from indoor machine 200 flows. Through second connection pipe 400, the gas-liquid two-phase refrigerant flowing out from outdoor machine 100 toward indoor machine 200 or the gas-liquid two-phase refrigerant or the liquid-phase refrigerant flowing into outdoor machine 100 from indoor machine 200 flows.

[0033] Base 20 of outdoor machine 100 includes first branch pipe 21 and second branch pipe 22. First branch pipe 21 is connected between first pipe 11 of each of the plurality of outdoor units 10A and 10B and first connection pipe 300. First branch pipe 21 has a plurality of first ends 21A and 21B, a second end 21C, and a branch portion 21D located between the plurality of first ends 21A and 21B and second end 21C. The plurality of first ends 21A and 21B are connected to first pipes 11 of the plurality of outdoor units 10A and 10B, respectively. Second end 21C is connected to first connection pipe 300. Second branch pipe 22 is connected between second pipe 12 of each of the plurality of outdoor units 10A and 10B and second connection pipe 400. Second branch pipe 22 has a plurality of third ends 22A and 22B, a fourth end 22C, and a branch portion 22D located between the plurality of third ends 22A and 22B and fourth end 22C. The plurality of third ends 22A and 22B are connected to second pipes 12 of the plurality of outdoor units 10A and 10B, respectively. Fourth end 22C is connected to second connection pipe 400.

[0034] It should be noted that the plurality of outdoor units 10A and 10B may be connected in series with each other. Each of the plurality of outdoor units 10A and 10B does not need to include switching device 4. The number of outdoor units may be any number equal to or larger than two.

[0035] Hereinafter, embodiments of the outdoor machine will be described.First Embodiment.Configuration of Outdoor Machine

[0036] FIGS. 2-6 are views showing an example of an outdoor machine 101 according to a first embodiment. As shown in FIGS. 2-4, the plurality of outdoor units 10A and 10B are disposed above base 20. The plurality of outdoor units 10A and 10B are fixed to base 20. The plurality of outdoor units 10A and 10B and base 20 may be fixed to each other such that they can be integrally moved (for example, delivered). The plurality of outdoor units 10A and 10B are disposed side by side in a first direction DR1 orthogonal to an up-down direction. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided in a U-shape when viewed from the up-down direction, for example. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B has heat exchange portions disposed to face each other in first direction DR1, for example. In this case, it is preferable that the plurality of outdoor units 10A and 10B are disposed side by side with a spacing therebetween in first direction DR1. It is preferable that a space that can be serve as an air path facing the heat exchange portion of outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided between outdoor unit 10A and outdoor unit 10B in first direction DR1.

[0037] It should be noted that outdoor heat exchanger 2 of each of outdoor units 10A and 10B may be provided in a linear shape or in an L-shape when viewed from the up-down direction.

[0038] Each of the plurality of outdoor units 10A and 10B further includes a casing 13. Casing 13 has a front wall portion and a rear wall portion extending in first direction DR1, and a pair of side wall portions extending in a second direction DR2 orthogonal to each of the up-down direction and first direction DR1. At least a part of the front wall portion of casing 13 can be opened / closed or detached / attached by a maintenance worker.

[0039] An accommodation space 14 capable of accommodating above-described compressor 1, outdoor heat exchanger 2, first pipe 11, second pipe 12, and the like is provided inside casing 13 of each of outdoor units 10A and 10B. In FIG. 3, illustration of a part of casing 13 is omitted.

[0040] Each of the plurality of outdoor units 10A and 10B may further include a drain pan (not shown) disposed below outdoor heat exchanger 2 and the like. The drain pan may be provided with at least one drain hole.

[0041] As shown in FIGS. 2-4, base 20 further includes a casing 23. Casing 23 has a front wall portion and a rear wall portion extending in first direction DR1, and a pair of side wall portions extending in second direction DR2 orthogonal to each of the up-down direction and first direction DR1. An accommodation space 24 capable of accommodating above-described first branch pipe 21, second branch pipe 22, and the like is provided inside casing 23.

[0042] As shown in FIG. 4, accommodation space 24 of base 20 has, for example, a first region 24A disposed below outdoor unit 10A, a second region 24B disposed below outdoor unit 10B, and a third region 24C connecting first region 24A and second region 24B in first direction DR1. First region 24A underlies accommodation space 14 of outdoor unit 10A in the up-down direction. Second region 24B underlies accommodation space 14 of outdoor unit 10B in the up-down direction. Third region 24C underlies a space between casings 13 of outdoor units 10A and 10B in first direction DR1, in the up-down direction.

[0043] As shown in FIG. 4, first end 21A of first branch pipe 21 and third end 22A of second branch pipe 22 are disposed in first region 24A. First end 21B of first branch pipe 21 and third end 22B of second branch pipe 22 are disposed in second region 24B. Second end 21C of first branch pipe 21 and fourth end 22C of second branch pipe 22 are disposed in second region 24B. A part of each of first branch pipe 21 and second branch pipe 22 extends through third region 24C.

[0044] Base 20 is provided with a connection opening 25 through which first connection pipe 300 connected to second end 21C of first branch pipe 21 and second connection pipe 400 connected to fourth end 22C of second branch pipe 22 pass. Base 20 may be provided with a connection opening through which first connection pipe 300 connected to second end 21C of first branch pipe 21 passes, and a connection opening through which second connection pipe 400 connected to fourth end 22C of second branch pipe 22 passes, independently of each other.

[0045] FIGS. 5 and 6 are views showing an example of base 20 of outdoor machine 101. In FIGS. 5 and 6, illustration of the plurality of outdoor units 10A and 10B is omitted.

[0046] As shown in FIGS. 5 and 6, base 20 is further provided with an access opening 26 to allow access to accommodation space 24 from outside of the plurality of outdoor units 10A and 10B and base 20. In the present specification, a structure to allow access to accommodation space 24 means a structure to allow a hand of the maintenance worker or a tool operated by the maintenance worker to reach the inside of accommodation space 24 from the outside of the plurality of outdoor units 10A and 10B and base 20, without passing through accommodation space 14 of each of the plurality of outdoor units 10A and 10B. Preferably, access opening 26 extends along first direction DR1. Preferably, the opening width of access opening 26 in first direction DR1 is wider than the opening width of access opening 26 in the up-down direction. Access opening 26 is provided in at least the front wall portion of casing 23.

[0047] Preferably, access opening 26 allows access to each of the plurality of first ends 21A and 21B and second end 21C of first branch pipe 21 and the plurality of third ends 22A and 22B and fourth end 22C of second branch pipe 22.

[0048] Preferably, access opening 26 allows access to each of first region 24A, second region 24B, and third region 24C of accommodation space 24.

[0049] Base 20 includes at least one panel 27 capable of opening and closing access opening 26. At least one panel 27 is provided so as not to close connection opening 25.

[0050] Base 20 includes, for example, a plurality of panels 27 capable of opening and closing access opening 26. The plurality of panels 27 have a first panel 27A and a second panel 27B. First panel 27A is a member different from second panel 27B. First panel 27A and second panel 27B can open and close different opening regions of access opening 26, independently of each other. First panel 27A can open and close, for example, an opening region that is contiguous to first region 24A and third region 24C of accommodation space 24 in second direction DR2, of access opening 26. Second panel 27B can open and close, for example, an opening region that is contiguous to second region 24B of accommodation space 24 in second direction DR2, of access opening 26.

[0051] Preferably, base 20 further includes at least one fixing portion 28 capable of fixing at least one panel 27 to casing 23. Fixing portion 28 fixes panel 27 to casing 23 such that panel 27 can be opened / closed or detached / attached. Fixing portion 28 includes, for example, at least one of a screw and a hinge. Base 20 includes, for example, a plurality of fixing portions 28 capable of fixing first panel 27A to casing 23, and a plurality of fixing portions 28 capable of fixing second panel 27B to casing 23. It should be noted that, in FIGS. 5 and 6, illustration of some of the plurality of fixing portions 28 is omitted.

[0052] Preferably, access opening 26 is provided so as to be contiguous to connection opening 25. Preferably, in a state in which panel 27 opens access opening 26, access opening 26 and connection opening 25 are provided so as to form one opening.

[0053] From a different viewpoint, base 20 is provided with an opening 29. A part of opening 29 is provided as connection opening 25. The remaining part of opening 29 is provided as access opening 26. Panel 27 is provided so as to open and close only access opening 26 of opening 29.

[0054] As shown in FIG. 6, preferably, access opening 26 has a size that allows each of first branch pipe 21 and the second branch pipe to be taken in and out therethrough. Preferably, entire first branch pipe 21 can be taken in and out through access opening 26. Preferably, entire second branch pipe 22 can be taken in and out through access opening 26.Effects

[0055] In outdoor machine 101, base 20 is provided with accommodation space 24 capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units 10A and 10B, and access opening 26 to allow access to accommodation space 24 from the outside of the plurality of outdoor units 10A and 10B and base 20. Base 20 has panel 27 capable of opening and closing access opening 26. Accordingly, in outdoor machine 101, it is possible to perform maintenance work for the pipes and the like disposed inside base 20, in a state in which base 20 supports outdoor units 10A and 10B.

[0056] In outdoor machine 101, outdoor unit 10A or 10B may be provided as a minimum unit of the outdoor machine. Outdoor units 10A and 10B may have the same configuration. Thereby, the number of components that are common between the outdoor units can be increased. Further, in outdoor machine 101, it is possible to change the capacity of outdoor machine 101 in a stepwise manner, in accordance with the number of outdoor units 10A and 10B that are made common to each other. In outdoor machine 101, it is possible to easily realize a lineup of outdoor machines having different capabilities by appropriately combining the outdoor units that are made common and a plurality of types of base 20 capable of supporting different numbers of such outdoor units.

[0057] In outdoor machine 101, two outdoor units 10A and 10B may be disposed with a spacing therebetween in first direction DR1. In this case, the outdoor air can be sent from the space between casings 13 of two outdoor units 10A and 10B to outdoor heat exchanger 2 of each of two outdoor units 10A and 10B. Accordingly, heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B can be improved, when compared with a case where two outdoor units 10A and 10B are disposed without a spacing therebetween in first direction DR1.

[0058] In outdoor machine 101, since a load can be distributed to the outdoor units, performance can be improved. Furthermore, in outdoor machine 101, since a plurality of compressors are used, the amount of displacement of the refrigerant can be increased and the amount of circulation of the refrigerant can be increased, when compared with a case where only one compressor is used.

[0059] In outdoor machine 101, when the plurality of outdoor units 10A and 10B and base 20 are coupled to be integrally movable, the number of man-hours for installation work can be reduced and workability of outdoor machine 101 can be improved, when compared with a case where the plurality of outdoor units and the base are coupled at a location where outdoor machine 101 is to be installed.Second Embodiment.

[0060] An outdoor machine according to a second embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0061] FIG. 7 is a view for illustrating the positional relation in the up-down direction between first branch pipe 21 and second branch pipe 22 accommodated inside base 20 and drain holes 15 provided in a drain pan of each of a plurality of outdoor units, in the outdoor machine according to the second embodiment. In FIG. 7, outdoor heat exchanger 2 of each of outdoor units 10A and 10B is indicated by a broken line.

[0062] As shown in FIG. 7, each of the plurality of outdoor units is provided with a plurality of drain holes 15. The plurality of drain holes 15 are disposed mainly below outdoor heat exchanger 2. The plurality of outdoor units have the same configuration, for example. In each of the plurality of outdoor units, the plurality of drain holes 15 have the same configuration, for example.

[0063] Each of first branch pipe 21 and second branch pipe 22 is disposed so as not to underlie the plurality of drain holes 15 in the up-down direction.

[0064] For example, when first branch pipe 21 or second branch pipe 22 is disposed so as to underlie the plurality of drain holes 15 in the up-down direction, drained water from drain holes 15 is cooled by first branch pipe 21 or second branch pipe 22 to form an ice column, and this ice column may damage first branch pipe 21 or second branch pipe 22. On the other hand, in the outdoor machine according to the second embodiment, each of first branch pipe 21 and second branch pipe 22 is disposed so as not to underlie the plurality of drain holes 15 in the up-down direction, and thus it is possible to suppress occurrence of defects such as damage and rupture in first branch pipe 21 and second branch pipe 22 due to drained water from drain holes 15.

[0065] Preferably, the pipes and wires accommodated in accommodation space 24 of base 20 are disposed so as not to underlie the plurality of drain holes 15 in the up-down direction. This can suppress occurrence of defects such as damage and rupture in the pipes and wires due to drained water from drain holes 15.Modification

[0066] FIG. 8 is a view for illustrating a modification of the outdoor machine according to the second embodiment. As shown in FIG. 8, in the outdoor machine according to the second embodiment, at least one of first branch pipe 21 and second branch pipe 22 may be disposed so as to underlie only a part of the plurality of drain holes 15 in the up-down direction. It is only necessary that, among the plurality of drain holes 15, the number of drain holes 15 overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction is smaller than the number of drain holes 15 not overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction. In this case, it is only necessary that each of the plurality of outdoor units 10A and 10B has a closing member 17 to close drain hole 15 overlapping at least one of first branch pipe 21 and second branch pipe 22 in the up-down direction, among the plurality of drain holes 15. Closing member 17 prevents water from being drained from drain hole 15 to accommodation space 24 of base 20. This can also suppress occurrence of defects such as damage and rupture in the pipes and wires due to drained water from drain hole 15.Third Embodiment

[0067] An outdoor machine according to a third embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0068] FIG. 9 is a partially enlarged side view of second branch pipe 22 accommodated inside base 20 in the outdoor machine according to the third embodiment.

[0069] As shown in FIG. 9, second branch pipe 22 further has a T-shaped portion 22E. T-shaped portion 22E is located between branch portion 22D and fourth end 22C.

[0070] T-shaped portion 22E has a first opening end 22E1, a second opening end 22E2, and a third opening end 22E3. First opening end 22E1 is connected to the plurality of third ends 22A and 22B via branch portion 22D. Second opening end 22E2 is connected to fourth end 22C. Third opening end 22E3 is closed. Second opening end 22E2 and third opening end 22E3 face opposite to each other.

[0071] As shown in FIG. 9, first opening end 22E1 may face upward. Second opening end 22E2 and third opening end 22E3 may face opposite to each other in a horizontal direction. It should be noted that first opening end 22E1 may face in the horizontal direction.

[0072] In the outdoor machine according to the third embodiment, mixing of a gas refrigerant and a liquid refrigerant in a gas-liquid two-phase refrigerant flowing through second branch pipe 22 is promoted at T-shaped portion 22E of second branch pipe 22. Accordingly, a deviation in the mixing ratio between the gas refrigerant and the liquid refrigerant is less likely to occur between the gas-liquid two-phase refrigerants distributed from second end 21C to the plurality of first ends 21A and 21B via branch portion 22D. In the outdoor machine according to the third embodiment, it is possible to suppress occurrence of a deviation in the distribution of the gas-liquid two-phase refrigerant from base 20 to each of outdoor units 10A and 10B.

[0073] Preferably, second branch pipe 22 does not have an L-shaped portion bent in an L-shape between branch portion 22D and T-shaped portion 22E. If second branch pipe 22 has an L-shaped portion instead of T-shaped portion 22E, a centrifugal force acting on the liquid refrigerant having a high density, in the gas-liquid two-phase refrigerant flowing through the L-shaped portion, is larger than a centrifugal force acting on the gas refrigerant having a low density. In this case, the gas-liquid two-phase refrigerant in which gas-liquid separation is promoted at the L-shaped portion is distributed to each of outdoor units 10A and 10B at branch portion 22D, and thus the deviation in the mixing ratio is likely to occur between the gas-liquid two-phase refrigerants flowing into outdoor units 10A and 10B. On the other hand, in outdoor machine 104 in which second branch pipe 22 does not have an L-shaped portion between branch portion 22D and T-shaped portion 22E, it is possible to more effectively suppress occurrence of the deviation of the mixing ratio between the gas-liquid two-phase refrigerants flowing into outdoor units 10A and 10B.

[0074] More preferably, second branch pipe 22 does not have an L-shaped portion between branch portion 22D and fourth end 22C. It should be noted that second branch pipe 22 may have an L-shaped portion between T-shaped portion 22E and fourth end 22C. Second branch pipe 22 may have an L-shaped portion between branch portion 22D and each of the plurality of third ends 22A and 22B.

[0075] First branch pipe 21 does not have a T-shaped portion, for example. It should be noted that first branch pipe 21 may have a T-shaped portion.Fourth Embodiment

[0076] An outdoor machine according to a fourth embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0077] FIGS. 10 and 11 are views showing an example of an outdoor machine 104 according to the fourth embodiment. FIG. 11 is a partially enlarged perspective view showing a state achieved when outdoor unit 10A is positioned with respect to base 20 by a fixing member 30 shown in a region XI in FIG. 10. As shown in FIGS. 10 and 11, outdoor machine 104 further includes a plurality of fixing members 30 capable of positioning each of the plurality of outdoor units 10A and 10B on base 20 and fixing each of the plurality of outdoor units 10A and 10B to base 20. The plurality of fixing members 30 can position casing 13 of each of the plurality of outdoor units 10A and 10B on casing 23 of base 20, and fix casing 13 to casing 23, for example.

[0078] Each of casing 13 and casing 23 is provided with a plurality of through holes through which the plurality of fixing members 30 are passed respectively. Casing 13 is provided with a plurality of through holes 13H (see FIG. 11). Casing 23 is provided with a plurality of through holes 23H (see FIG. 11). When casing 13 is appropriately disposed with respect to casing 23, the plurality of through holes 13H in casing 13 are provided so as to overlap the plurality of through holes 23H in casing 23 in the up-down direction. The opening area of each of the plurality of through holes 13H is larger than the opening area of each of the plurality of through holes 23H, for example.

[0079] The plurality of fixing members 30 each include a male screw portion and a female screw portion, for example. The male screw portion is included in a bolt and is connected to a head portion of the bolt, for example. The female screw portion is a nut, for example. The male screw portion is passed through the through hole in each of casing 13 and casing 23. The head portion of the bolt is disposed below through hole 23H in casing 23, for example. The nut is screwed onto the male screw portion above through hole 13H in casing 13, for example. It should be noted that, in FIGS. 10 and 11, illustration of the male screw portion and the female screw portion is omitted.

[0080] Preferably, the plurality of fixing members 30 can be positioned in the plurality of through holes in casing 23, respectively, in a state in which the plurality of fixing members 30 are not passed through the plurality of through holes in casing 13, respectively. For example, each of the plurality of through holes in casing 23 may be provided as a female screw portion to be screwed onto the male screw portion of each of the plurality of fixing members 30.

[0081] Outdoor machine 104 can be installed in the following procedure.

[0082] Firstly, base 20 is disposed at a location where outdoor machine 104 is to be installed. The plurality of fixing members 30 are positioned in the plurality of through holes in casing 23 of base 20.

[0083] Secondly, the plurality of fixing members 30 protruding upward from the plurality of through holes in casing 23 of base 20, respectively, are passed through the plurality of through holes in casing 13 of each of the plurality of outdoor units 10A and 10B, to position the plurality of outdoor units 10A and 10B on base 20.

[0084] Thirdly, casing 13 of each of the plurality of outdoor units 10A and 10B is fixed to casing 23 of base 20 by the plurality of fixing members 30.

[0085] Thereby, outdoor machine 104 can be easily installed at its installation location.

[0086] It should be noted that the plurality of through holes in casing 13 may be provided as female screw portions of the plurality of fixing members 30. The plurality of fixing members 30 may be capable of fixing the plurality of outdoor units 10A and 10B and base 20 such that they can be integrally moved.Fifth Embodiment

[0087] An outdoor machine according to a fifth embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0088] FIGS. 12 and 13 are views showing an example of an outdoor machine 105 according to the fifth embodiment. As shown in FIGS. 12 and 13, outdoor machine 105 further includes a protection portion 40 capable of protecting accommodation space 24 of base 20 between two outdoor units 10A and 10B adjacent to each other with a spacing therebetween in first direction DR1. Protection portion 40 can restrict an article and a human body part (for example, a finger) disposed around outdoor machine 105 from reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B. Protection portion 40 can protect third region 24C of accommodation space 24 of base 20.

[0089] Protection portion 40 can be attached to and detached from base 20, for example. Protection portion 40 can protect third region 24C of accommodation space 24 of base 20 when it is attached to base 20.

[0090] As shown in FIGS. 12 and 13, protection portion 40 includes a net-like member 41, for example. Net-like member 41 includes a plurality of metal lines extending in directions intersecting with each other, for example. Preferably, in net-like member 41, the plurality of metal lines extending in the directions intersecting with each other are joined to each other at intersections. Net-like member 41 can restrict an article and a human body part disposed around outdoor machine 105 from reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B. Net-like member 41 is provided with a plurality of openings smaller than a finger of a human.

[0091] Preferably, protection portion 40 further includes a drain pan 42 located below net-like member 41. Drain pan 42 is provided so as to cover the pipes and wires disposed in third region 24C of accommodation space 24, and is provided so as to receive water entering third region 24C from the plurality of openings provided in net-like member 41.

[0092] In outdoor machine 105, it is possible to prevent occurrence of defects caused by an article and a human body part disposed around outdoor machine 105 reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B, by means of protection portion 40, while improving heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B.Modification

[0093] FIGS. 14 and 15 are views showing a modification of protection portion 40 in outdoor machine 105. As shown in FIGS. 14 and 15, in outdoor machine 105, protection portion 40 may include a plate-like member 43 instead of net-like member 41. Preferably, plate-like member 43 has an upper surface inclined with respect to the horizontal direction. This can also prevent occurrence of defects caused by an article and a human body part disposed around outdoor machine 105 reaching the inside of accommodation space 24 from between casings 13 of the plurality of outdoor units 10A and 10B, by means of protection portion 40, while improving heat exchange performance of outdoor heat exchanger 2 of each of outdoor units 10A and 10B.

[0094] Although the embodiments of the present invention have been described, it should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the scope of the claims, and is intended to include any modifications within the scope and meaning equivalent to the scope of the claims.

Examples

first embodiment

Configuration of Outdoor Machine

[0036]FIGS. 2-6 are views showing an example of an outdoor machine 101 according to a first embodiment. As shown in FIGS. 2-4, the plurality of outdoor units 10A and 10B are disposed above base 20. The plurality of outdoor units 10A and 10B are fixed to base 20. The plurality of outdoor units 10A and 10B and base 20 may be fixed to each other such that they can be integrally moved (for example, delivered). The plurality of outdoor units 10A and 10B are disposed side by side in a first direction DR1 orthogonal to an up-down direction. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B is provided in a U-shape when viewed from the up-down direction, for example. Outdoor heat exchanger 2 of each of outdoor units 10A and 10B has heat exchange portions disposed to face each other in first direction DR1, for example. In this case, it is preferable that the plurality of outdoor units 10A and 10B are disposed side by side with a spacing therebetwee...

second embodiment

[0060]An outdoor machine according to a second embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0061]FIG. 7 is a view for illustrating the positional relation in the up-down direction between first branch pipe 21 and second branch pipe 22 accommodated inside base 20 and drain holes 15 provided in a drain pan of each of a plurality of outdoor units, in the outdoor machine according to the second embodiment. In FIG. 7, outdoor heat exchanger 2 of each of outdoor units 10A and 10B is indicated by a broken line.

[0062]As shown in FIG. 7, each of the plurality of outdoor units is provided with a plurality of drain holes 15. The plurality of drain holes 15 a...

third embodiment

[0067]An outdoor machine according to a third embodiment has the same configuration and functions and effects as those of outdoor machine 101 according to the first embodiment described above, and can be modified similarly, unless otherwise specified. Therefore, the same components as those of the first embodiment described above will be designated by the same reference numerals, and the description thereof will not be repeated.

[0068]FIG. 9 is a partially enlarged side view of second branch pipe 22 accommodated inside base 20 in the outdoor machine according to the third embodiment.

[0069]As shown in FIG. 9, second branch pipe 22 further has a T-shaped portion 22E. T-shaped portion 22E is located between branch portion 22D and fourth end 22C.

[0070]T-shaped portion 22E has a first opening end 22E1, a second opening end 22E2, and a third opening end 22E3. First opening end 22E1 is connected to the plurality of third ends 22A and 22B via branch portion 22D. Second opening end 22E2 is co...

Claims

1. An outdoor machine comprising:a plurality of outdoor units; anda base capable of supporting the plurality of outdoor units, whereinthe base is provided with an accommodation space capable of accommodating at least a part of a pipe connected to each of the plurality of outdoor units, and an access opening to allow access to the accommodation space from outside of the plurality of outdoor units and the base, andthe base has a panel capable of opening and closing the access opening.

2. The outdoor machine according to claim 1, whereinthe base is disposed below each of the plurality of outdoor units,the plurality of outdoor units are disposed side by side in a first direction orthogonal to an up-down direction, andthe access opening extends along the first direction.

3. The outdoor machine according to claim 1, whereinthe base further has the pipe accommodated in the accommodation space,the pipe has a plurality of first ends connected to the plurality of outdoor units, respectively, and a second end located opposite to the plurality of first ends, andthe plurality of first ends and the second end are accessible from the outside of the plurality of outdoor units and the base through the access opening.

4. The outdoor machine according to claim 3, whereinthe pipe has a branch portion located between the plurality of first ends and the second end, and a T-shaped portion located between the branch portion and the second end,the T-shaped portion has a first opening end, a second opening end, and a third opening end, andthe first opening end is connected to the plurality of first ends via the branch portion, the second opening end is connected to the second end, and the third opening end is closed.

5. The outdoor machine according to claim 1, whereineach of the plurality of outdoor units includes a drain pan provided with a drain hole, andthe base includes the pipe disposed so as not to underlie the drain hole in each of the plurality of outdoor units in an up-down direction.

6. The outdoor machine according to claim 1, whereineach of the plurality of outdoor units has a drain pan provided with a plurality of drain holes,the base has the pipe, andeach of the plurality of outdoor units further has a closing member to close the drain hole overlapping the pipe in an up-down direction among the plurality of drain holes.

7. The outdoor machine according to claim 1, further comprising a plurality of fixing members capable of positioning each of the plurality of outdoor units on the base and fixing each of the plurality of outdoor units to the base.

8. The outdoor machine according to claim 7, wherein the plurality of fixing members are provided so as to position the plurality of outdoor units on the base such that the plurality of outdoor units are disposed with a spacing therebetween in a first direction orthogonal to an up-down direction.

9. The outdoor machine according to claim 1, whereinthe plurality of outdoor units are disposed with a spacing therebetween in a first direction orthogonal to an up-down direction, andthe outdoor machine further comprises a protection portion capable of protecting the accommodation space of the base between the plurality of outdoor units disposed with the spacing therebetween in the first direction.

10. A refrigeration cycle apparatus comprising:the outdoor machine according to claim 1;an indoor machine; anda connection pipe to connect the outdoor machine and the indoor machine, whereineach of the plurality of outdoor units is connected to the connection pipe via the pipe accommodated in the accommodation space.

11. The outdoor machine according to claim 2, whereinthe base further has the pipe accommodated in the accommodation space,the pipe has a plurality of first ends connected to the plurality of outdoor units, respectively, and a second end located opposite to the plurality of first ends, andthe plurality of first ends and the second end are accessible from the outside of the plurality of outdoor units and the base through the access opening.

12. The outdoor machine according to claim 11, whereinthe pipe has a branch portion located between the plurality of first ends and the second end, and a T-shaped portion located between the branch portion and the second end,the T-shaped portion has a first opening end, a second opening end, and a third opening end, andthe first opening end is connected to the plurality of first ends via the branch portion, the second opening end is connected to the second end, and the third opening end is closed.

13. The outdoor machine according to claim 2, whereineach of the plurality of outdoor units includes a drain pan provided with a drain hole, andthe base includes the pipe disposed so as not to underlie the drain hole in each of the plurality of outdoor units in the up-down direction.

14. The outdoor machine according to claim 2, whereineach of the plurality of outdoor units has a drain pan provided with a plurality of drain holes,the base has the pipe, andeach of the plurality of outdoor units further has a closing member to close the drain hole overlapping the pipe in the up-down direction among the plurality of drain holes.

15. The outdoor machine according to claim 2, further comprising a plurality of fixing members capable of positioning each of the plurality of outdoor units on the base and fixing each of the plurality of outdoor units to the base.

16. The outdoor machine according to claim 15, wherein the plurality of fixing members are provided so as to position the plurality of outdoor units on the base such that the plurality of outdoor units are disposed with a spacing therebetween in the first direction orthogonal to the up-down direction.

17. The outdoor machine according to claim 2, whereinthe plurality of outdoor units are disposed with a spacing therebetween in the first direction orthogonal to the up-down direction, andthe outdoor machine further comprises a protection portion capable of protecting the accommodation space of the base between the plurality of outdoor units disposed with the spacing therebetween in the first direction.

18. The outdoor machine according to claim 3, whereineach of the plurality of outdoor units includes a drain pan provided with a drain hole, andthe base includes the pipe disposed so as not to underlie the drain hole in each of the plurality of outdoor units in an up-down direction.

19. The outdoor machine according to claim 3, whereineach of the plurality of outdoor units has a drain pan provided with a plurality of drain holes,the base has the pipe, andeach of the plurality of outdoor units further has a closing member to close the drain hole overlapping the pipe in an up-down direction among the plurality of drain holes.

20. The outdoor machine according to claim 3, further comprising a plurality of fixing members capable of positioning each of the plurality of outdoor units on the base and fixing each of the plurality of outdoor units to the base.

Images