Outdoor unit and air conditioning system

Abstract

To provide an outdoor unit that can properly drain condensation and meltwater. [Solution] The outdoor unit comprises a bottom plate, a pressure reducer, and a flow divider, wherein 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.

Description

Technical Field

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

Background Art

[0002] Patent Document 1 discloses an outdoor unit provided with a refrigerant diverter that distills and flows a liquid refrigerant. In the outdoor unit, a first drainage portion having a first opening is provided on the bottom plate. Further, the refrigerant diverter includes a plurality of refrigerant pipes through which the refrigerant flows. Since the refrigerant flowing through the refrigerant pipes is colder than the outside air, the outside air around the refrigerant pipes is cooled, and dew water and frost adhere thereto. 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.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[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. The present disclosure provides an outdoor unit that can appropriately drain dew water and melt water even when the refrigerant diverter is arranged above the outdoor unit.

Means for Solving the Problems

[0005] The outdoor unit in the present disclosure is 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 the water dripping from the connection pipe to the drain hole is provided below the connection pipe.

[0006] The air conditioning system in this disclosure is 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. [Effects of the Invention]

[0007] In this disclosure, the outdoor unit can guide condensed water and melted water to the drain hole via a water guide section. Therefore, even if the refrigerant diverter is positioned above, condensed water and melted water can be properly drained. [Brief explanation of the drawing]

[0008] [Figure 1] Diagram showing the air conditioning system in Embodiment 1 [Figure 2] Diagram showing the inside of the outdoor unit in Embodiment 1 [Figure 3] Enlarged view of the main part of Figure 2 in Embodiment 1 [Figure 4] Diagram showing the water supply section in Embodiment 1 [Figure 5] Diagram showing the second water intake section in Embodiment 1. [Modes for carrying out the invention]

[0009] (Knowledge and other information that formed 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 through drainage holes provided in the bottom plate of the outdoor unit. However, the inventors discovered that with the conventional technology, when the refrigerant flow divider 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 water even when the refrigerant diverter is positioned above.

[0010] The embodiments will be described in detail below with reference to the drawings. However, some unnecessarily detailed explanations may be omitted. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. The attached 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. Structure] [1-1-1. Configuration of the air conditioning system] Figure 1 shows an 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. This allows refrigerant to circulate 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 is equipped with 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. Also, during heating operation, the indoor heat exchanger functions as a condenser, exchanging heat between the refrigerant discharged from the compressor and the air. [1-1-2. Outdoor Unit Configuration]

[0014] As shown in FIG. 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 FIG. 2) 12 and main frames 13 that extend vertically at the four corners of the bottom plate 12. Panels 14 are attached to the front, rear, left, and right surfaces of the main frames 13. Although not shown, intake openings are formed in the panels 14 on the left, right, and rear surfaces. Also, a top plate 15 is provided at the upper end of the main frame 13. The top plate 15 is formed in a lattice shape.

[0015] Below the top plate 15, a blower fan 16 is disposed. The blower fan 16 has an upward blowing direction. That is, by the operation of the blower fan 16, outside air is taken in from the panels 14 on the left, right, and rear surfaces of the housing 11, and the air that has exchanged heat with the refrigerant by the outdoor heat exchanger 20 described later is discharged from the top plate 15.

[0016] A drain pan 12a is provided on the bottom plate 12 (see FIG. 4). A drain hole 12b is provided in the drain pan 12a. The drain hole 12b is a circular hole that penetrates the bottom plate 12. The drain hole 12b can drain the dew condensation water generated inside the outdoor unit 10 described later and the thawing water generated when the frost melts during the defrosting operation.

[0017] FIG. 2 is a view in which the panels 14 on the front, rear, left, and right surfaces are removed from the housing 11 of the outdoor unit 10. Inside the housing 11, a compressor, an outdoor heat exchanger 20, an expansion device 21, and a diverter 22 (not shown) are provided.

[0018] The compressor and the expansion device 21 are disposed between the indoor heat exchanger and the outdoor heat exchanger 20 in the refrigerant flow path. The compressor sucks in low-pressure refrigerant, compresses the refrigerant to a predetermined pressure, and discharges it. The expansion device 21 reduces the pressure of the flowing-in refrigerant to a predetermined pressure. Thereby, by adjusting the pressure, 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. Specifically, 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 a first shunt (corresponding to a shunt) 22a and a 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 diversion valve 22a is connected to the pressure reducer 21 by the first connecting pipe (corresponding to the connecting pipe) 25a. In other words, the first diversion valve 22a is positioned between the pressure reducer 21 and the outdoor heat exchanger 20 in the refrigerant path. The second diverter 22b is connected to the refrigerant piping 25d extending from the pressure reducer by the second connecting pipe 25b. In other words, the second diverter 22b is positioned in 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 is susceptible to flow deviation due to pressure imbalance caused by factors such as the inflow of gaseous-liquid two-phase refrigerant into the first diverter 22a, bends in the pipe, 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 flow deviation occurring in the first connecting pipe 25a can be suppressed.

[0023] Figure 4 is an enlarged view of the water intake 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 intake 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] Below the water intake section 29, a refrigerant pipe 25c is located that connects the pressure reducer 21 and the outdoor heat exchanger 20. In other words, the water intake section 29 is located between the first connecting pipe 25a and a different refrigerant pipe 25c.

[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 diverter 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 pressure distribution imbalances caused by the inflow of gaseous-liquid two-phase refrigerant into the second diverter 22b, as well as bends and constrictions in the piping. 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. Effects, etc.] Next, the operation of Embodiment 1 will be described. When the air conditioning system 1 is operating in heating mode, condensation or frost forms inside the casing 11 of the outdoor unit 10 due to low temperatures around the outdoor unit 10 or due to the temperature drop caused by heat exchange in the outdoor heat exchanger 20. More specifically, condensation or frost forms on the outdoor heat exchanger 20, capillary tube 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 airflow deviation. When condensation or frost occurs in these vertical pipes 25a1 and 25b1, the condensation and meltwater generated by the melting of frost during defrosting operations tend to drip from the vertical pipes 25a1 and 25b1. If the dripping condensation freezes or the meltwater refreezes, icicles or ice roots will form inside the casing 11. In other words, there is a concern that the heating capacity of the air conditioning unit 1 will decrease and that the icicles or ice roots inside the outdoor unit 10 may come into contact with the pipes and cause damage.

[0031] In this embodiment, the outdoor unit 10 is equipped with a drain hole 12b for draining such condensation water. The condensation water drips through a predetermined pipe and flows through the water guide section 29, thereby being 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 in the same way as the condensation water. More specifically, as shown by the arrows in Figure 4, condensation water generated on the first connecting pipe 25a and meltwater generated when frost melts during defrosting operation drip from the first vertical pipe 25a1 down 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 of the bottom plate 12 and can be drained. Thus, the formation of icicles and ice on the roots 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 water guide section 29 has a bent portion 29a that 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 arrows 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 tube 37. The water sent to 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 leakage 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, allowing for easy drainage of condensed water and melted water without significant changes from the existing configuration.

[0040] [1-3. Effects, etc.]

[0041] 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 a capillary 23 and the first connecting pipe 25a to the drain hole. According to this, even if the first flow divider 22a is positioned at the top, 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 intake section 29 is located below the lowest end of the first connecting pipe 25a. According to this, by providing a 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.

[0043] The water guide section 29 is formed in a flat plate shape, and a bent portion 29a is formed on one side of the water guide section 29 to guide water to the drain hole 12b. According to this, the bent portion 29a of the water guide portion 29 allows water to flow efficiently to the drain hole 12b. Therefore, even if condensation or melted frost water is generated inside the outdoor unit 10, the water can be properly drained.

[0044] The unit has an outdoor heat exchanger 20, and the drain hole 12b drains melted frost water or condensation water generated on the outdoor heat exchanger 20. According to this, by positioning the water guide section 29 toward the drain hole 12b located at the bottom of the outdoor heat exchanger 20, it becomes unnecessary to form a new drain hole 12b, thereby reducing the airflow performance of the outdoor heat exchanger 20 and suppressing the risk of small animals entering.

[0045] A second water supply section is provided that connects the first connecting pipe 25a to a second connecting pipe 25b, which is connected to the second flow divider 22b and located below the second flow divider 22b, and a second connecting pipe 25b, which is located below the second flow divider 22b. According to this, by circulating water through the second water intake section to the drain hole 12b, condensation and meltwater generated at multiple locations can be efficiently drained.

[0046] The second water supply section 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 guide for condensation and melted water, condensation and melted frost generated inside the outdoor unit 10 can be properly drained with a simple configuration.

[0047] Below the first connecting pipe 25a, a refrigerant pipe 25c is positioned, and the water guide section 29 is provided between the first connecting pipe 25a and the refrigerant pipe 25c. According to this, it is possible to suppress the dripping of condensation water and melted water onto the refrigerant pipe 25c located vertically below the first connecting pipe 25a. Therefore, freezing of the refrigerant pipe 25c located below the first connecting pipe 25a can be suppressed, and the layout of the refrigerant pipe 25 can be improved.

[0048] An air conditioning system 1 having an indoor unit 5 and an outdoor unit 10, wherein the outdoor unit 10 has a bottom plate 12, a pressure reducer 21, and a first flow divider 22a, the bottom 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 is provided a water guide section 29 that guides water dripping from the first connecting pipe 25a to the drain hole 12b. According to this, even if the first flow divider 22a is positioned at the top, 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.

[0049] (Other embodiments) As described above, Embodiment 1 has been presented as an example disclosed in this application. However, the technology in this disclosure is not limited to this and can be applied to embodiments that have been modified, replaced, added, or omitted. Furthermore, it is possible to create new embodiments by combining the components described in Embodiment 1. Therefore, other embodiments are illustrated below.

[0050] In this embodiment, a configuration was described in which a water-guiding section having a bent portion in a flat plate guides and drains adhering water and melted water. However, the shape of the water-guiding section is not particularly limited. In other words, it is sufficient as long as it can guide water to the drain hole. Furthermore, in this embodiment, an example was described in which a tube 37 is provided on the wiring 36 of the refrigerant temperature sensor to serve as a second water guide. However, the second water guide is not limited to the tube 37 on the wiring 36 of the refrigerant temperature sensor. In other words, it is sufficient if water can be guided to the drain hole 12b.

[0051] Since the embodiments described above are for illustrative purposes of the technology described herein, various modifications, substitutions, additions, omissions, etc., can be made within the claims or their equivalents.

[0052] (Note) Based on the above description of embodiments, the following technologies are disclosed.

[0053] (Technical 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. According to this design, even if the flow divider is positioned at the top, water can still 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 2) The outdoor unit according to Technical 1, wherein the water intake section is provided below the lowest end of the connecting pipe. According to this, by installing a water guide at the lowest end of the connecting pipe where water tends to accumulate, water can be circulated to the drain hole via the water guide. Therefore, even if condensation or melted frost water occurs inside the outdoor unit, the water can be properly drained.

[0055] (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. According to this design, the bent section of the water intake allows water to flow efficiently through the drain hole. Therefore, even if condensation or melted frost water is generated inside the outdoor unit, the water can be properly drained.

[0056] (Technology 4) An outdoor unit according to any one of Techniques 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. According to this method, by positioning the water intake section toward the drainage hole of the outdoor heat exchanger, it becomes unnecessary to create a new drainage hole, thereby reducing the airflow performance of the outdoor heat exchanger and minimizing the risk of small animals entering.

[0057] (Technical 5) An outdoor unit according to Technical 1 to 4, 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. According to this, by circulating water through the drainage holes via the second water intake section, condensation and meltwater generated at multiple locations can be efficiently drained.

[0058] (Technical 6) The outdoor unit according to Technical 5, wherein the second water supply section is a tube that protects the wiring of the refrigerant temperature sensor. According to this, by using the temperature sensor tube as a water guide for condensation and melted water, condensation and melted frost generated inside the outdoor unit 10 can be properly drained with a simple configuration.

[0059] (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. According to this method, it is possible to suppress the dripping of condensation water and melted water onto the refrigerant piping located vertically below the connecting pipe. Therefore, it is possible to suppress the freezing of the refrigerant piping located below the connecting pipe and improve the layout of the refrigerant piping.

[0060] (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 for guiding water dripping from the connecting pipe to the drain hole. According to this design, even if the flow divider is positioned at the top, water can still 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. [Industrial applicability]

[0061] 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. [Explanation of Symbols]

[0062] 1. Air conditioning system 5 Indoor unit 6 cabinets 10 Outdoor unit 11 cabinets 12 Bottom plate 12a Drain pan 12b Drain hole 13 Mainframe 14 panels 15 Top plate 16. Blower fan 20 Outdoor heat exchanger 21 Pressure reducer 22 Flow divider 22a 1st flow divider (flow divider) 22b 2nd shunt 23 Capillaries 24 Fastening members 25 Refrigerant piping 25a First connecting pipe (connecting pipe) 25a1 First vertical tube 25a2 1st U-shaped piping 25a3 First vertical short tube 25b Second connecting pipe 25b1 Second vertical tube 25b2 2nd U-shaped piping 25b3 Second vertical short pipe 29 Water intake section 29a Folded section 36 Wiring 37 Tubes

Claims

1. In an outdoor unit having a base plate, a pressure reducer, and a flow divider, The bottom plate is provided with drainage holes for draining water. The pressure reducer and the flow divider are connected by connecting piping. Below the connecting pipe, a water guide is provided to direct the water dripping from the connecting pipe to the drain hole. outdoor unit.

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

3. 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 into the drain hole. The outdoor unit according to claim 1.

4. It has an outdoor heat exchanger, The drainage hole is for draining melted frost water or condensation water generated in the outdoor heat exchanger. The outdoor unit according to claim 1.

5. It has a second flow divider positioned above the aforementioned flow divider, A second connecting pipe is provided, which is connected to the second flow divider and positioned below the second flow divider, and a second water guide section is provided to connect the connecting pipe. The outdoor unit according to claim 1.

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

7. Below the aforementioned connecting pipe, refrigerant piping is arranged. The water supply section is provided between the connecting pipe and the refrigerant pipe. The outdoor unit according to claim 1.

8. An air conditioning system having an indoor unit and an outdoor unit, The outdoor unit has a base plate, a pressure reducer, and a flow divider. The bottom plate is provided with drainage holes for draining water. The pressure reducer and the flow divider are connected by connecting piping. Below the connecting pipe, a water guide is provided to direct the water dripping from the connecting pipe to the drain hole. Air conditioning system.

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