Outdoor unit and air conditioner

Abstract

Provided is an outdoor unit capable of appropriately draining dew condensation water and meltwater.　This outdoor unit has a bottom plate, a pressure reducer, and a flow divider. The bottom plate includes a drain hole for draining water, the pressure reducer and the flow divider are connected by a connection pipe, and a water guide part for guiding water dripped from the connection pipe to the drain hole is provided below the connection pipe.

Description

Outdoor unit and air conditioner

[0001] This disclosure relates to an outdoor unit and an air conditioner.

[0002] Patent Document 1 discloses an outdoor unit provided with a refrigerant diverter that distills and flows a liquid refrigerant. The outdoor unit is provided with a first drainage portion having a first opening on the bottom plate. The refrigerant diverter includes a plurality of refrigerant pipes through which the refrigerant flows. Since the refrigerant flowing through the refrigerant pipe is cooler than the outside air, the outside air around the refrigerant pipe is cooled, and dew water and frost adhere. The dew water and the melt water of the frost are discharged to the outside through the first opening disposed at a position overlapping the lowermost end of the refrigerant pipe in the vertical direction.

[0003] Japanese Unexamined Patent Application Publication No. 2021 - 081077

[0004] However, in the outdoor unit, the refrigerant diverter is not necessarily arranged near the bottom plate, and may be arranged above the outdoor unit. This disclosure provides an outdoor unit that can appropriately drain dew water and melt water even when the refrigerant diverter is arranged above in the outdoor unit.

[0005] This specification includes all the contents of Japanese Patent Application No. 2024 - 170335 filed on September 30, 2024. The outdoor unit in this disclosure, in an outdoor unit having a bottom plate, a decompressor, and a diverter, the bottom plate is provided with a drain hole for draining water, the decompressor and the diverter are connected by a connection pipe, and a water guide portion for guiding water dripping from the connection pipe to the drain hole is provided below the connection pipe.

[0006] The air conditioner in this disclosure is an air conditioner having an indoor unit and an outdoor unit. The outdoor unit has a bottom plate, a decompressor, and a diverter. The bottom plate is provided with a drain hole for draining water. The decompressor and the diverter are connected by a connection pipe, and a water guide portion for guiding water dripping from the connection pipe to the drain hole is provided below the connection pipe.

[0007] The outdoor unit in this disclosure can guide dew water and melt water to the drain hole by the water guide portion. Therefore, even when the refrigerant diverter is arranged above, the drainage of dew water and melt water can be appropriately performed.

[0008] Figure 1 shows an air conditioning system in Embodiment 1. Figure 2 shows the inside of the outdoor unit in Embodiment 1. Figure 3 is an enlarged view of the main part of Figure 2 in Embodiment 1. Figure 4 shows the water guide section in Embodiment 1. Figure 5 shows the second water guide section in Embodiment 1.

[0009] (Knowledge and other information forming the basis of this disclosure) At the time the inventors conceived of this disclosure, there was a technology, as described in Patent Document 1, for draining condensation water and melted frost water from drainage holes provided in the bottom plate of the outdoor unit. However, the inventors discovered that with the conventional technology, if the refrigerant diverter was positioned at the top, it was not possible to properly drain condensation water and melted frost water. To solve this problem, the subject matter of this disclosure was established. Therefore, this disclosure provides an outdoor unit that can properly drain condensation water and melted frost water even when the refrigerant diverter is positioned at the top.

[0010] The embodiments will be described in detail below with reference to the drawings. However, some descriptions may be omitted to avoid unnecessary detail. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0011] Furthermore, each figure shows the direction of the outdoor unit 10 in its installed state with an arrow. The symbol UP indicates upward, the symbol FR indicates forward, and the symbol R indicates right. In the explanation, unless otherwise specified, directions such as front, back, left, right, up, and down are based on the direction of the outdoor unit 10 in Figure 1.

[0012] (Embodiment 1) [1-1. Configuration] [1-1-1. Configuration of the air conditioning system] Figure 1 is a diagram showing the air conditioning system 1. The air conditioning system 1 comprises an indoor unit 5 installed indoors and an outdoor unit 10 installed outdoors. The indoor unit 5 and the outdoor unit 10 are connected by refrigerant piping 25. As a result, refrigerant circulates between the indoor unit 5 and the outdoor unit 10. More specifically, the refrigerant piping 25 connects, for example, an indoor heat exchanger (not shown) provided in the indoor unit 5, a compressor (not shown) provided in the outdoor unit 10, an outdoor heat exchanger 20, and a pressure reducer 21, etc., to form a refrigerant flow path through which the refrigerant circulates.

[0013] The indoor unit 5 comprises a housing 6. Inside the housing 6 is an indoor heat exchanger. The indoor heat exchanger is a heat exchanger that exchanges heat between the refrigerant and the indoor air. In other words, during cooling operation, the indoor heat exchanger absorbs heat from the room, and during heating operation, it releases heat from the refrigerant into the room. To put it another way, during cooling operation, the indoor heat exchanger functions as an evaporator, exchanging heat between the refrigerant discharged from the pressure reducer and the air. Furthermore, during heating operation, the indoor heat exchanger functions as a condenser, exchanging heat between the refrigerant discharged from the compressor and the air.

[0014] [1-1-2. Outdoor Unit Configuration] As shown in Figure 1, the outdoor unit 10 includes a housing 11. The housing 11 is formed in a rectangular parallelepiped shape. The housing 11 has a bottom plate (see Figure 2) 12 and a main frame 13 that extends vertically from the four corners of the bottom plate 12. Panels 14 are attached to the front, rear, left, and right sides of the main frame 13. Although not shown, intake openings are formed in the left, right, and rear panels 14. In addition, a top plate 15 is provided at the upper end of the main frame 13. The top plate 15 is formed in a grid pattern.

[0015] A blower fan 16 is positioned below the top panel 15. The blower fan 16 is oriented upwards. In other words, the operation of the blower fan 16 draws in outside air from the left, right, and rear panels 14 of the housing 11, and discharges the air that has exchanged heat with the refrigerant by the outdoor heat exchanger 20 (described later) from the top panel 15.

[0016] A drain pan 12a is provided on the bottom plate 12 (see Figure 4). A drain hole 12b is provided on the drain pan 12a. The drain hole 12b is a circular hole that penetrates the bottom plate 12. The drain hole 12b allows for the drainage of condensation water generated inside the outdoor unit 10 (described later) and meltwater generated when frost melts during defrosting operation.

[0017] Figure 2 shows the outdoor unit 10 with the front, rear, left, and right side panels 14 removed from the housing 11. Inside the housing 11 are a compressor (not shown), an outdoor heat exchanger 20, a pressure reducer 21, and a flow divider 22.

[0018] The compressor and pressure reducer 21 are positioned in the refrigerant flow path between the indoor heat exchanger and the outdoor heat exchanger 20. The compressor draws in low-pressure refrigerant, compresses it to a predetermined pressure, and discharges it. The pressure reducer 21 reduces the incoming refrigerant to a predetermined pressure. By adjusting the pressure in this way, the temperature of the refrigerant can be adjusted.

[0019] The outdoor heat exchanger 20 is positioned along the left, right, and rear panels 14 of the housing 11. In other words, the outdoor heat exchanger 20 is positioned in a roughly U-shape when viewed from above. The outdoor heat exchanger 20 performs heat exchange between the refrigerant and the outdoor air. That is, the outdoor heat exchanger 20 comes into contact with the outside air drawn in from the left, right, and rear panels 14 by the operation of the blower fan 16. As a result, during cooling operation, it releases heat from the refrigerant to the outside, and during heating operation, it absorbs heat from the outside air. In other words, during cooling operation, the outdoor heat exchanger functions as a condenser, performing heat exchange between the refrigerant discharged from the compressor and the air. Also, during heating operation, the outdoor heat exchanger functions as an evaporator, performing heat exchange between the refrigerant discharged from the pressure reducer and the air. The outdoor heat exchanger 20 is provided with multiple heat transfer tubes. The heat transfer tubes are connected to the first shunt (corresponding to a shunt) 22a and the second shunt 22b by capillaries 23.

[0020] Figure 3 is an enlarged view of the main part of Figure 2. In this embodiment, the flow divider 22 comprises a first flow divider 22a and a second flow divider 22b positioned above the first flow divider 22a. The first flow divider 22a is connected to the pressure reducer 21 by a first connecting pipe (corresponding to a connecting pipe) 25a. In other words, the first flow divider 22a is positioned on the refrigerant path between the pressure reducer 21 and the outdoor heat exchanger 20. The second flow divider 22b is connected to the refrigerant pipe 25d extending from the pressure reducer by a second connecting pipe 25b. In other words, the second flow divider 22b is positioned on the refrigerant path between the pressure reducer and the outdoor heat exchanger 20.

[0021] The first connecting pipe 25a consists of a straight first vertical pipe 25a1 extending vertically downward from the first flow divider, a first U-shaped pipe 25a2 curving upward from the lower end of the first vertical pipe 25a1, and a first vertical short pipe 25a3 extending vertically upward from the first U-shaped pipe 25a2.

[0022] During heating operation, the first connecting pipe 25a may be susceptible to uneven flow due to pressure distribution imbalances caused by factors such as the inflow of gaseous-liquid two-phase refrigerant into the first diverter 22a, bends in the piping, and throttling. However, by providing a first vertical pipe 25a1, which is a straight pipe of a predetermined length, below the first diverter 22a, the uneven flow occurring in the first connecting pipe 25a can be suppressed.

[0023] Figure 4 is an enlarged view of the water guide section 29. The water guide section 29 is formed in a flat plate shape that extends toward the drain hole 12b of the bottom plate 12. The lower corner of the water guide section 29 is inclined at a predetermined angle with respect to the side edge of the water guide section 29. A bent portion 29a that is curved upward is formed in this inclined portion. The upper end of the water guide section 29 is attached to the lowest end of the first U-shaped pipe 25a2 of the first connecting pipe 25a via a ring-shaped fastening member 24.

[0024] A refrigerant pipe 25c connecting the pressure reducer 21 and the outdoor heat exchanger 20 is located at the lower part of the water conduit 29. In other words, the water conduit 29 is provided between the first connecting pipe 25a and a refrigerant pipe 25c that is different from the first connecting pipe 25a.

[0025] Figure 5 is an enlarged view of the second water intake section. The second connecting pipe 25b comprises a second vertical pipe 25b1 extending vertically downward from the second flow divider 22b, a second U-shaped pipe 25b2 curving upward from the lower end of the second vertical pipe 25b1, and a second vertical short pipe 25b3 extending vertically upward from the second U-shaped pipe 25b2.

[0026] In the second connecting pipe 25b, during heating operation, there is a concern that uneven flow may occur due to the inflow of gaseous-liquid two-phase refrigerant into the second diverter 22b, as well as bends and constrictions in the piping, resulting in an imbalance in pressure distribution. However, by providing a second vertical pipe 25b1, which is a straight pipe of a predetermined length, below the second diverter 22b, the uneven flow that occurs in the second connecting pipe 25b can be suppressed.

[0027] The outdoor heat exchanger 20 is equipped with a refrigerant temperature sensor (not shown) to check the refrigerant temperature of the outdoor heat exchanger 20. By checking the refrigerant temperature of the outdoor heat exchanger 20 using the refrigerant temperature sensor, the completion of the defrosting operation is detected.

[0028] The wiring 36 for the refrigerant temperature sensor is fixed at its middle section to the lowest end of the second U-shaped pipe 25b2 of the second connecting pipe 25b. The lowest end of the wiring for the refrigerant temperature sensor is positioned vertically above the water guide section 29.

[0029] A tube 37 is provided to protect the wiring 36 of the refrigerant temperature sensor. This allows condensed water and melted water to drip onto the tube 37 and be guided to the water guide section 29. In other words, the tube 37 corresponds to the second water guide section.

[0030] [1-2. Operation, etc.] Next, the operation of Embodiment 1 will be described. When the air conditioner 1 is performing heating operation, condensation water and frost are generated inside the casing 11 of the outdoor unit 10 due to the low temperature around the outdoor unit 10 or the temperature drop caused by heat exchange in the outdoor heat exchanger 20. More specifically, condensation water and frost are generated on the outdoor heat exchanger 20, capillary 23, piping, etc. As described above, the vertical pipes 25a1 and 25b1 provided in the first connecting pipe 25a and the second connecting pipe 25b are extended vertically to a predetermined length to prevent uneven flow. When condensation water and frost are generated on such vertical pipes 25a1 and 25b1, the condensation water and melted water generated when frost melts due to defrosting operation tend to drip from the vertical pipes 25a1 and 25b1. When the dripped condensation water freezes or the melted water refreezes, icicles and ice roots are generated inside the casing 11. In other words, there is a concern that the heating capacity of the air conditioning system 1 will decrease and that icicles or ice crystals inside the outdoor unit 10 may come into contact with the piping, causing damage.

[0031] In this embodiment, the outdoor unit 10 is equipped with a drain hole 12b for draining condensation water. The condensation water drips through a predetermined pipe and flows through the water guide section 29, allowing it to be drained outside the outdoor unit 10. As for frost, the outdoor unit 10 performs a defrosting operation to melt the frost, and the melted water is drained from the drain hole 12b, similar to the condensation water. More specifically, as shown by the arrows in Figure 4, the condensation water generated in the first connecting pipe 25a and the melted water generated when frost melts during the defrosting operation drip from the first vertical pipe 25a1 through the first U-shaped pipe 25a2 and into the water guide section 29. The water that drips into the water guide section 29 is guided to the drain hole 12b in the bottom plate 12 and can be drained. Therefore, the formation of ice columns and root ice inside the outdoor unit 10 can be prevented.

[0032] Furthermore, even if condensation or meltwater occurs in the capillary 23, the condensation or meltwater is guided through the flow divider 22a to the first connecting pipe 25a. In other words, just as when condensation or meltwater occurs in the first connecting pipe 25a as described above, the water can be drained from the drain hole 12b.

[0033] Furthermore, the bent portion 29a of the water guide section 29 prevents the water flowing through the water guide section 29 from being guided towards the refrigerant piping 25, thereby suppressing contact between the water dripping from the water guide section 29 and the refrigerant piping 25. This prevents the water flowing through the water guide section 29 from refreezing due to contact with the refrigerant piping 25.

[0034] Furthermore, since the water guide section 29 can receive water dripping from the first connecting pipe 25a, a portion of the refrigerant piping 25 can be placed vertically below the water guide section 29. In this embodiment, the refrigerant piping 25c connecting the pressure reducer 21 and the outdoor heat exchanger 20 is located there. Conventionally, refrigerant piping 25 could not be placed in locations where there was a concern about water dripping in order to prevent condensation water and refreezing of melted water. However, by providing the water guide section 29, refrigerant piping 25 can also be placed below the water guide section 29. Therefore, the layout of the refrigerant piping 25 can be improved.

[0035] As shown by the arrow in Figure 5, the water generated in the second connecting pipe 25b drips down the second vertical pipe 25b1 to the second U-shaped pipe 25b2, and then moves to the tube 37. The water sent to the tube 37 drips into the water guide section 29, and, similar to the drainage of water in the first connecting pipe 25a, is guided to the drain hole 12b in the water guide section 29 and drained.

[0036] Furthermore, even if condensation or meltwater occurs in the capillary 23, the condensation or meltwater is guided through the flow divider 22b to the second connecting pipe 25b. In other words, just as when condensation or meltwater occurs in the second connecting pipe 25b as described above, the water can be drained from the drain hole 12b.

[0037] In this way, the meltwater generated by the melting of condensation and frost is properly drained outside the housing 11 by the water guide section 29 and tube 37. In other words, it is possible to prevent water generated inside the housing 11 from forming icicles or ice crystals and coming into contact with the piping, thereby preventing damage to the piping.

[0038] Furthermore, in this embodiment, since condensation and meltwater generated in the piping are guided to the drainage holes 12b provided at the bottom of the outdoor heat exchanger 20, there is no need to provide drainage holes 12b corresponding to the locations where condensation and meltwater are generated. In other words, since condensation and meltwater can be drained from the drainage holes 12b at the bottom of the outdoor heat exchanger 20 that were originally provided, there is no need to create new drainage holes 12b. That is, the number of drainage holes 12b can be minimized. Consequently, it is possible to suppress a decrease in the airflow performance of the outdoor heat exchanger 20 due to air leaking from the drainage holes 12b. In addition, it is possible to suppress small animals from entering the outdoor unit 10 through the drainage holes 12b.

[0039] Furthermore, in this embodiment, a second water supply section is created by wrapping a tube 37 around the wiring 36 of the refrigerant temperature sensor, so condensed water and melted water can be easily drained without significantly changing the existing configuration.

[0040] [1-3. Effects, etc.] In an outdoor unit 10 having a base plate 12, a pressure reducer 21, and a flow divider 22, the base plate 12 is provided with a drain hole 12b for draining water, the pressure reducer 21 and the first flow divider 22a are connected by a first connecting pipe 25a, and below the first connecting pipe 25a, a water guide section 29 is provided to guide water dripping from the capillary 23 and the first connecting pipe 25a to the drain hole. With this, even if the first flow divider 22a is positioned above, water can be circulated to the drain hole 12b by the water guide section 29. Therefore, even if condensation or melted frost water is generated inside the outdoor unit 10, the water can be properly drained.

[0041] The water guide section 29 is located below the lowest end of the first connecting pipe 25a. By placing the water guide section 29 at the lowest end of the first connecting pipe 25a, where water tends to accumulate, water can be circulated to the drain hole 12b by the water guide section 29. Therefore, even if condensation or melted frost water is generated inside the outdoor unit 10, the water can be properly drained.

[0042] The water guiding part 29 is formed in a flat plate shape, and a bent part 29a for guiding water to the drain hole 12b is formed on one side of the water guiding part 29. According to this, the bent part 29a of the water guiding part 29 enables water to efficiently flow through the drain hole 12b. Therefore, even when condensed water or melted water of frost occurs in the outdoor unit 10, the drainage of water can be appropriately performed.

[0043] It has an outdoor heat exchanger 20, and the drain hole 12b drains the melted water or condensed water of the frost generated in the outdoor heat exchanger 20. According to this, by arranging the water guiding part 29 toward the drain hole 12b provided at the lower part of the outdoor heat exchanger 20, there is no need to form a new drain hole 12b, and it is possible to suppress a decrease in the air volume performance of the outdoor heat exchanger 20 and the risk of small animals invading.

[0044] It has a second diverter 22b arranged above the first diverter 22a, and a second water guiding part is provided for connecting a second connection pipe 25b connected to the second diverter 22b and arranged below the second diverter 22b and the first connection pipe 25a. According to this, by allowing water to flow through the second water guiding part to the drain hole 12b, the condensed water and melted water generated at multiple locations can be efficiently drained.

[0045] The second water guiding part is a tube 37 that protects the wiring 36 of the refrigerant temperature sensor. According to this, by using the tube 37 that protects the wiring 36 of the temperature sensor as a water guiding part for condensed water and melted water, the condensed water and melted water of frost generated in the outdoor unit 10 can be appropriately drained with a simple configuration.

[0046] A refrigerant pipe 25c is arranged below the first connection pipe 25a, and the water guiding part 29 is provided between the first connection pipe 25a and the refrigerant pipe 25c. According to this, it is possible to suppress the dripping of condensed water or melted water onto the refrigerant pipe 25c arranged vertically below the first connection pipe 25a. Therefore, it is possible to suppress the freezing of the refrigerant pipe 25c arranged below the first connection pipe 25a and improve the layout of the refrigerant pipe 25.

[0047] An air conditioner 1 having an indoor unit 5 and an outdoor unit 10, wherein the outdoor unit 10 has a bottom plate 12, a decompressor 21, and a first diverter 22a. The bottom plate 12 is provided with a drain hole 12b for draining water. The decompressor 21 and the first diverter 22a are connected by a first connection pipe 25a. Below the first connection pipe 25a, a water guiding portion 29 for guiding the water dripping from the first connection pipe 25a to the drain hole 12b is provided. According to this, even when the first diverter 22a is disposed upward, the water can flow through the water guiding portion 29 to the drain hole 12b. Therefore, even when dew condensation water or thawing water of frost occurs in the outdoor unit 10, the drainage of water can be appropriately performed.

[0048] (Another Embodiment) As described above, as an example disclosed in the present application, the above-described Embodiment 1 has been described. However, the technology in the present disclosure is not limited thereto, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made. Further, it is also possible to combine the respective components described in the above-described Embodiment 1 to form a new embodiment. Therefore, other embodiments will be exemplified below.

[0049] In the present embodiment, a configuration in which adhering water and thawing water are induced and drained by a water guiding portion having a bent portion on a flat plate has been described. However, the shape of the water guiding portion is not particularly limited. That is, it is only necessary that water can be guided to the drain hole. Further, in the present embodiment, an example in which a tube 37 is provided on the wiring 36 of the refrigerant temperature sensor to serve as a second water guiding portion has been described. However, the second water guiding portion is not limited to the tube 37 of the wiring 36 of the refrigerant temperature sensor. That is, it is only necessary that water can be guided to the drain hole 12b.

[0050] In addition, since the above-described embodiments are for exemplifying the technology in the present disclosure, various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or their equivalents.

[0051] (Supplementary Note) By the description of the above embodiments, the following technology is disclosed.

[0052] (Technology 1) An outdoor unit having a base plate, a pressure reducer, and a flow divider, wherein the base plate is provided with a drain hole for draining water, the pressure reducer and the flow divider are connected by a connecting pipe, and below the connecting pipe is a water guide section that guides water dripping from the connecting pipe to the drain hole. With this, even if the flow divider is positioned at the top, water can be circulated to the drain hole by the water guide section. Therefore, even if condensation or melted frost water is generated inside the outdoor unit, the water can be properly drained.

[0053] (Technology 2) The outdoor unit according to Technology 1, wherein the water guide is provided below the lowest end of the connecting pipe. With this, by providing the water guide at the lowest end of the connecting pipe where water tends to accumulate, water can be circulated to the drain hole by the water guide. Therefore, even if condensation or melted frost water is generated inside the outdoor unit, the water can be properly drained.

[0054] (Technical 3) The outdoor unit according to Technical 1 or 2, wherein the water guide portion is formed in a flat plate shape, and a bent portion is formed on one side of the water guide portion to guide water to the drain hole. With this, the bent portion of the water guide portion allows water to flow efficiently to the drain hole. Therefore, even if condensation or melted frost water is generated inside the outdoor unit, the water can be drained properly.

[0055] (Technology 4) An outdoor unit according to any one of Technologies 1 to 3, having an outdoor heat exchanger, wherein the drainage hole drains melted frost water or condensation water generated in the outdoor heat exchanger. With this, by arranging the water guide section toward the drainage hole of the outdoor heat exchanger, it becomes unnecessary to form a new drainage hole, and the reduction in the airflow performance of the outdoor heat exchanger and the risk of small animals entering can be suppressed.

[0056] (Technical 5) An outdoor unit according to Technical 1 to 4, having a second flow divider positioned above the aforementioned flow divider, a second connecting pipe connected to the second flow divider and positioned below the second flow divider, and a second water guide section connecting the connecting pipe. With this, by circulating water to the drain hole through the second water guide section, condensation water and meltwater generated at multiple locations can be efficiently drained.

[0057] (Technical 6) The outdoor unit as described in Technical 5, wherein the second water supply section is a tube that protects the wiring of the refrigerant temperature sensor. With this, by using the temperature sensor tube as a water supply section for condensation water and melted water, condensation water and melted frost water generated inside the outdoor unit 10 can be properly drained with a simple configuration.

[0058] (Technical 7) An outdoor unit according to Technical 1 to 6, wherein a refrigerant pipe is arranged below the connecting pipe, and the water guide is provided between the connecting pipe and the refrigerant pipe. This makes it possible to suppress the dripping of condensation water and melted water onto the refrigerant pipe arranged vertically below the connecting pipe. Therefore, it is possible to suppress freezing of the refrigerant pipe arranged below the connecting pipe and improve the layout of the refrigerant pipe.

[0059] (Technical 8) An air conditioning system having an indoor unit and an outdoor unit, wherein the outdoor unit has a bottom plate, a pressure reducer, and a flow divider, the bottom plate is provided with a drain hole for draining water, the pressure reducer and the flow divider are connected by a connecting pipe, and below the connecting pipe is provided a water guide section that guides water dripping from the connecting pipe to the drain hole. With this, even if the flow divider is positioned at the top, water can be circulated to the drain hole by the water guide section. Therefore, even if condensation or melted frost water is generated inside the outdoor unit, the water can be properly drained.

[0060] As described above, the outdoor unit and air conditioning system according to the present invention can be used for the purpose of removing condensation water and melted water generated inside the outdoor unit.

[0061] 1 Air conditioning unit 5 Indoor unit 6 Enclosure 10 Outdoor unit 11 Enclosure 12 Bottom plate 12a Drain pan 12b Drain hole 13 Main frame 14 Panel 15 Top plate 16 Blower fan 20 Outdoor heat exchanger 21 Pressure reducer 22 Diverter 22a First diverter (diverter) 22b Second diverter 23 Capillary 24 Fastening member 25 Refrigerant piping 25a First connecting pipe (connecting pipe) 25a1 First vertical pipe 25a2 First U-shaped pipe 25a3 First vertical short pipe 25b Second connecting pipe 25b1 Second vertical pipe 25b2 Second U-shaped pipe 25b3 Second vertical short pipe 29 Water conduit 29a Bent section 36 Wiring 37 Tube

Claims

1. An outdoor unit having a base plate, a pressure reducer, and a flow divider, wherein the base plate is provided with a drain hole for draining water, the pressure reducer and the flow divider are connected by a connecting pipe, and below the connecting pipe is provided a water guide section for guiding water dripping from the connecting pipe to the drain hole.

2. The outdoor unit according to claim 1, wherein the water intake section is provided below the lowest end of the connecting pipe.

3. The outdoor unit according to claim 1, wherein the water guiding portion is formed in a flat plate shape, and a bent portion is formed on one side of the water guiding portion to guide water to the drain hole.

4. The outdoor unit according to claim 1, comprising an outdoor heat exchanger, wherein the drainage hole drains melted frost water or condensation water generated in the outdoor heat exchanger.

5. The outdoor unit according to claim 1, further comprising a second flow divider positioned above the aforementioned flow divider, a second connecting pipe connected to the second flow divider and positioned below the second flow divider, and a second water guide section connecting the connecting pipe.

6. The outdoor unit according to claim 5, wherein the second water supply section is a tube that protects the wiring of the refrigerant temperature sensor.

7. The outdoor unit according to claim 1, wherein a refrigerant pipe is arranged below the connecting pipe, and the water guide is provided between the connecting pipe and the refrigerant pipe.

8. An air conditioning system having an indoor unit and an outdoor unit, wherein the outdoor unit has a bottom plate, a pressure reducer, and a flow divider, the bottom plate is provided with a drain hole for draining water, the pressure reducer and the flow divider are connected by a connecting pipe, and below the connecting pipe is provided a water guide section for guiding water dripping from the connecting pipe to the drain hole.

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