TWI676771B - Air conditioner - Google Patents

Abstract

The air conditioner (C) of the present invention includes an indoor unit (Ci) and an outdoor unit (Co); the outdoor unit (Co) includes: an electrical component (8d1) configured on a substrate (8); and A sheet metal box (7) covering the electrical components (8d1); the sheet metal box (7) is a drainage groove (13) having a concave shape formed by sheet metal and a waterproof dike (11, 12) having a convex shape. The substrate (8) is preferably arranged on the upper side of the sheet metal box (7), with the soldering surface (8h) facing upward, and the surface of the electrical component (8d1) facing downward.

Description

Air conditioner

[0001] The present invention relates to an air conditioner.

[0002] Since the outdoor unit of the air conditioner is installed outdoors, it is exposed to wind and rain such as typhoons. Inside the outdoor unit, in addition to the liquid-gas separator (Accumulator), compressor, outdoor heat exchanger, piping, etc. that constitute the refrigeration cycle, a control board is also installed that includes electronic components that control the refrigeration cycle and the like. The control board is housed in a sheet metal electrical box. Since the electrical box is made of sheet metal, a hole for bending the iron plate is formed in the corner portion. [0003] In addition, an opening is formed in the outdoor unit to promote the heat exchange of the outdoor heat exchanger in the outdoor unit, and the outdoor air is transported by a fan. On a rainy day, the outdoor rain will be sucked into the interior of the outdoor unit by the fan, which will wet the electrical box. In this case, water may intrude into the electrical box inside the outdoor unit. [0004] Electronic parts or power supply units in electrical goods boxes are short-circuited or cause malfunctions when they are exposed to moisture. Since they cannot be exposed to moisture, it is desirable to have a structure that prevents moisture from entering the electrical goods box. In other words, it is necessary to take measures to prevent the moisture entering the electrical box of the outdoor unit from contacting the electronic parts or the power supply unit. [Prior Art Document] [Patent Document] [0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2015-040679 (Figure 1 (b), paragraph 0029, etc.)

[Problems to be Solved by the Invention] 0006 [0006] In the first figure (b) of Patent Document 1, it is described that the extension portion (36a) is disposed between the second opening (34) and the electrical component unit (24). In the meantime, when water drops enter the machine room (20) from the second opening (34), the extension portion (36a) is configured to waterproof the electrical component assembly unit (24). [0007] As another countermeasure, in order to prevent water from completely entering the electric article box, a waterproof tape or sheet material, or a sealant such as silicone rubber is applied to the gap of the electric article box, or Use a sponge-like sealing material to fill the gaps or holes in the electrical box. [0008] Even with such countermeasures, it is difficult to fill gaps or holes to be completely waterproof. Therefore, double waterproof measures such as applying a sealing material to the inside of the electrical goods box and attaching a waterproof tape to the outside are also produced. 000 [0009] Or in other words, since the waterproofing operation takes time, the waterproofing operation is left until another process different from the production line of the outdoor unit is made, and the waterproofing material is inputted in the production line. As a result of this, assembly man-hours increased, material costs increased, and most costs incurred in materials and assembly. Therefore, it leads to an increase in production costs. [0010] As a countermeasure other than the above, there is a countermeasure for molding an electrical article box with a resin. When the electrical article box is formed of resin, the cost is 2 to 3 times higher than that of the electrical article box made of sheet metal. In addition, when the electrical article box is formed of resin, there is a problem that it is flammable and cannot be made into a non-combustible structure. Therefore, in order to make a resin-molded electrical article box into a refractory structure, a resin-made electrical article box is covered with a sheet metal box. [0011] The present invention has been developed in view of the above-mentioned actual situation, and an object thereof is to provide an air conditioner that can perform waterproofing of an electric article box with a simple structure. [Means for Solving the Problem] [0012] In order to solve the above-mentioned problems, the air conditioner of the first aspect of the present invention includes an indoor unit and an outdoor unit; the outdoor unit includes: an electrical structured article configured on a substrate, and The sheet metal box covering the electrical components; the sheet metal box has a concave drain groove formed by sheet metal and a convex dike. [Inventive Effect] [0013] According to the present invention, it is possible to realize an air conditioner that can perform waterproofing of an electric article box with a simple structure.

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. The present invention relates to an air conditioner, and in particular, to an electric article box having a waterproof dike and a drainage groove so that moisture entering the electric article box of the outdoor unit does not contact the electronic parts or the power supply section. [0016] In the present invention, a structure is proposed in which the water does not flow to the electronic component part or the power supply part even when water intrudes into the electric article box. Thereby, the reliability of the electric article box is maintained, and the manufacturing cost is suppressed. [0017] FIG. 1 shows an outdoor unit Co of an air conditioner C according to an embodiment of the present invention. The air conditioner C of the embodiment includes an indoor unit Ci and an outdoor unit Co. The indoor unit Ci is installed in the room for air conditioning in the room. [0018] <Outdoor Unit Co> The outdoor unit Co is a main functional element installed outside the house and containing the air conditioner C inside. The outdoor unit Co is formed by the outer cover 1. [0019] FIG. 2 shows a state where the front plate 1m and the upper plate 1u of the cover 1 of the outdoor unit Co are removed. The inside of the outdoor unit Co and the indoor unit Ci constitute a refrigeration cycle connected to the pipe 2 through which the refrigerant flows. [0020] A liquid-gas separator 3 constituting a refrigeration cycle, a compressor 4, an outdoor heat exchanger 1e, and the like are connected to the inside of the outdoor unit Co via a pipe 2. Standing in front of the outdoor heat exchanger 1e, a fan 5 for sending air is placed in the outdoor heat exchanger 1e. [0021] As shown in FIG. 1, in the front plate 1m of the cover 1, an opening 1k for drawing outside air toward the outdoor heat exchanger 1e inside the outdoor unit Co is formed in front of the fan 5. The opening 1k is constituted by a grid 1k1 having a radial shape and a circular shape. [0022] At the upper right of the outdoor unit Co shown in FIG. 2, an electric article box assembly 6 is disposed, which houses a fan motor (not shown) capable of controlling the driving of the fan 5 or an inverter device that controls the compressor 4 And so on. The liquid-gas separator 3, the compressor 4, and the like are separated from the fan 5, the fan motor, and the electrical goods box assembly 6 by a zone partition 1s. [0023] Since the outdoor unit Co is installed outside the house, it is exposed to wind and rain. Therefore, in a rainy day or a typhoon, there is a phenomenon that the water that is sucked together with the air from the opening 1k (refer to FIG. 1) by the fan 5 wets the electric article box assembly 6. [0024] <Electrical Goods Box Assembly 6> FIG. 3 is a perspective view showing the electrical article box assembly 6 as viewed from the upper right; and FIG. 4 is a view showing the electrical article box assembly 6 as viewed from the lower left Perspective view. [0025] FIG. 5A is a top view showing the electrical goods box assembly 6; and FIG. 5B is a cross-sectional view taken along the line I-I of FIG. 5A. The electric article box assembly 6 includes an electric article box 7, a control board 8, and a board supporting portion 9. [0026] The electrical article box 7 is manufactured by processing sheet metal using a steel plate. The control board 8 is an electronic component 8d1 configured with a frequency conversion device and the like. [0027] The substrate supporting portion 9 supports the control substrate 8 and is formed into a shape that is embedded in the electric article box 7 by resin. The substrate supporting portion 9 has a flat plate shape, and ribs are erected downward from the outer peripheral portion. [0028] As shown in FIG. 5B, the control substrate 8 on which the electronic component 8d1 is structured is disposed below the substrate support portion 9, and is disposed in an inverted posture. That is, the mounting surface 8j on which the electronic component 8d is mounted becomes the lower surface, and the soldering surface 8h on which the terminal of the electronic component 8d1 is soldered becomes the upper surface. [0029] This makes it possible to sufficiently increase the distance s1 from the capacitor 8c having the highest height to the bottom plate 7a of the electric article box 7 among the electronic components 8d. The distance s1 is, for example, 7 mm to 13 mm. Thereby, the electronic component 8d can be arrange | positioned apart from the bottom plate 7a of the electrical goods box 7. Therefore, water does not easily adhere to the electronic component 8d. [0030] The power element 8p installed on one side of the control substrate 8 flows a large current used for power control of the inverter device and the like. Therefore, since the heat generation amount of the power element 8p is large, it is necessary to dissipate heat. Here, a plurality of radiating fins 8f extending downward and coming into contact with the power element 8p are formed. The fin 8f is made of, for example, an aluminum material having good thermal conductivity, light weight, and good workability. [0031] As shown in FIG. 3, a terminal block 10 for a power source electrically connected to the control board 8 is provided on the other side of the electric article box 7. The terminal block 10 is provided with a power socket 10p. [0032] <Electrical Goods Box 7> FIG. 6 shows a diagram of the electrical goods box viewed obliquely from the upper right; FIG. 7 shows the bottom plate as viewed from the arrow II in FIG. 6 7a, the right side plate 7d, and the left side plate 7e are partially cut away. [0033] FIG. 8 is a diagram of the electrical goods box viewed obliquely from the upper left; FIG. 9 is a top view of the electrical goods box; FIG. 10 is a diagram of FIG. 9 III-III section enlarged view. Fig. 11 is a bottom view of the electric article box 7. [0034] As shown in FIG. 6, the electrical article box 7 is a box shape formed of sheet metal and having two chambers with an opened upper surface. Electrical article box 7 includes an electronic component storage room 7A and a fin insertion portion 7B. [0035] In the electronic component storage room 7A, there are stored electronic components 8d1, capacitors 8c, and the like, which are mounted on the control board 8 and face down. On the other hand, a fin insertion hole 7h is opened in the fin insertion portion 7B, so that the fin 8f fixed to the control substrate 8 can be inserted. [0036] The electronic component storage room 7A of the electric article box 7 is formed by bending a sheet metal: a bottom plate 7a, a front plate 7b, a rear plate 7c, a right plate 7d, and a left plate 7e. The bottom plate 7a, the front plate 7b, and the right side plate 7d form a sheet metal corner crotch k1. The bottom plate 7a, the rear plate 7c, and the right side plate 7d form a sheet metal corner portion k2. The bottom plate 7a, the front plate 7b, and the left side plate 7e form a sheet metal corner portion k3. The bottom plate 7a, the left side plate 7e, and the rear plate 7c form a sheet metal corner portion k4. [0037] The corner portions k1, k2, k3, and k4 of the sheet metal corners are formed with corner holes a1, a2, a3, and a4 of about 1.0 mm to 1.5 mm in the bending process of the sheet metal, respectively. As a result, water can enter the corner holes a1, a2, a3, and a4. In this case, the water is drained so as not to wet the control substrate 8. Therefore, on the contrary, the corner holes a1, a2, a3, and a4 are used as drain holes. [0038] <Wire outlet 13 and terminal block holder 14 of the right side plate 7d> As shown in FIGS. 3 and 6, on the front side of the right side plate 7d, an electric wire for signal lines is formed (not shown) ) The lead wire outlet 13 passing therethrough forms a rectangular cutout shape. The wire outlet 13 is formed at a higher position (distanced) from the bottom plate 7a. Since the wire outlet 13 is positioned higher from the bottom plate 7a, water can be prevented from flowing into the interior along the electric wires for the signal lines. [0039] At the center of the right-side plate 7d, a terminal block holder 14 is formed which bends the plate connected to the bottom plate 7a to the outside and bends upward, and is used to place the indoor unit Ci and the indoor unit Ci connected by the cable. Terminal block 10 of the outdoor unit Co. [0040] <First Embankment Section 11 and Drain Trench 13> As shown in FIGS. 6 and 7, the bottom plate 7a, the front plate 7b, and the rear plate 7c are integrally formed in the vicinity of the left side plate 7e. A convex first bank portion 11 is formed toward the inside. The first embankment portion 11 includes a bottom embankment portion 11a formed on the bottom plate 7a, a front embankment portion 11b (see FIG. 7) formed on the front plate 7b, and a rear embankment portion 11c formed on the rear plate 7c. [0041] The bottom bank 11a shown in FIG. 6 is for blocking water flowing along the upper surface of the bottom plate 7a toward the center of the electronic component storage chamber 7A. The front bank portion 11b (see FIG. 7) formed in the front plate 7b is for blocking water flowing along the inner surface of the front plate 7b toward the center of the electronic component storage chamber 7A. The rear bank portion 11c (see FIG. 6) formed in the rear plate 7c is for blocking water flowing along the inner surface of the rear plate 7c toward the center of the electronic component storage chamber 7A. [0042] Between the first embankment portion 11 and the left side plate 7e, the corner hole a3 (see FIG. 9) is continuously connected to the corner hole a4 (see FIGS. 6 and 9), and the bottom plate 7a faces Drain groove 13 on the outer side. The drainage groove 13 is a drainage path for water entering the electronic component storage room 7A from the left side plate 7e of the electric article box 7 along the bottom plate 7a. The drain groove 13 drains water that flows from the left side plate 7e of the electrical box 7 along the inner surface of the front plate 7b to the center of the electronic component storage room 7A. The drain groove 13 drains water that flows from the left side plate 7e of the electrical box 7 along the inner surface of the rear plate 7c to the center of the electronic component storage room 7A. [0043] Further, the corner hole a3 and the corner hole a4 connected to the drain groove 13 constitute a drain hole for water entering the electronic component storage chamber 7A from the left plate 7e, the front plate 7b, and the rear plate 7c. [0044] <Second Embankment Section 12> As shown in FIG. 7 and FIG. 9, a second embankment section 12 is formed on the bottom plate 7a and the front plate 7b so as to be convex toward the inside. [0045] As shown in FIG. 9, the second bank portion 12 is formed asymmetrically with respect to the center line O extending in the longitudinal direction of the bottom plate 7a. In other words, the second embankment portion 12 is formed at an inclination of less than 90 degrees with respect to the flowing direction of the invaded water (arrow β17 in FIG. 17). (2) The second embankment portion 12 is provided on the opposite side of the mounting surface (terminal block holder 14) of the terminal block 10 of the bottom plate 7a, and has an angle hole a2 serving as a drainage hole. The second embankment portion 12 of the bottom plate 7a is formed obliquely with respect to the left side plate 7e or the right side plate 7d. The second embankment portion 12 is a drainage hole formed in the corner hole a2 of the blocked water. [0046] As shown in FIG. 9, an upper bank portion 12a1 extending from the front plate 7b toward the rear plate 7c is formed on one end portion of the second bank portion 12 of the bottom plate 7a. A middle bank slope portion 12a2 is formed at a central portion of the second bank portion 12 of the bottom plate 7a with respect to the left side plate 7e or the right side plate 7d. The middle bank slope portion 12 a 2 is formed so that the corner hole a 2 is disposed on the side of the first bank portion 11. [0047] On the other end of the middle bank slope portion 12a2, a lower bank portion 12a3 is formed. The lower bank portion 12a3 extends along the rear plate 7c so that the corner hole a2 is disposed on the side of the side plate 7e. [0048] As shown in FIG. 7, the front bank portion 12b of the second bank portion 12 formed on the front plate 7b is formed in a shape extending upward from the bottom plate 7a. [Formation of the First Embankment Section 11 and the Drain Trench 13 and Bending of the Left Side Plate 7e] Second, for the formation of the first bank section 11 and the drain groove 13 of the electrical box 7, and the left side plate 7e An example of bending forming will be described. [0050] In FIGS. 12A to 12C, the outline of the formation of the first bank 11 and the drainage groove 13 are shown in cross sections. Prepare a metal plate 15 (refer to FIG. 12A) to be the base material of the electrical article box 7. As the metal plate 15, a hot-dip galvanized steel plate, an electro-galvanized steel plate, or the like is used, but other metal plates may be used. (2) As the lower mold K1, a lower mold having a concave portion k1a corresponding to the drain groove 13 is prepared. [0051] As the upper die K2, an upper die having a punching hole k2a for forming the drainage groove 13 is prepared. Further, as shown in FIG. 12B, the metal plate 15 disposed between the lower mold K1 and the upper mold K2 is punched (arrow α1 in FIG. 12B). [0052] Accordingly, a drainage groove 13 is formed in the metal plate 15. In the same manner, the first bank portion 11 is formed. [0053] Thereby, the metal plate 15 having the first bank portion 11 and the drainage groove 13 formed as shown in FIG. 12C is obtained. In FIG. 12C and FIGS. 13A to 13C described later, the drainage trench 13 and the first bank 11 are illustrated separately. In this way, the drainage trench 13 may be formed separately from the first bank portion 11. [0054] The outline of the bent shape of the left side plate 7e is shown in FIGS. 13A to 13C as a cross section. Thereafter, as shown in FIG. 13A, the metal plate 15 on which the first bank portion 11 and the drainage groove 13 are formed is disposed between the lower mold K3 and the upper mold 4 described later. [0055] The lower die K3 is a concave escape portion k3b having a bending punch k3a and a drainage groove 13. The upper mold K4 is a convex support portion k4a having a drainage groove 13 and a concave escape portion k4b of a first embankment portion 11. [0056] Furthermore, as shown in FIG. 13B, the metal plate 15 between the lower die K3 and the upper die K4 is bent and formed by the bending punch k3a of the lower die K3 (arrow α2 in FIG. 13B). Thereby, the lower bank 7a and the left side board 7e of the first bank 11 and the drainage groove 13 where the electrical goods box 7 is formed as shown in FIG. 13C are formed. [0057] <Formation of the second embankment portion 12 and bending and forming of the front plate 7b having the second embankment portion 12> Second, regarding formation of the second embankment portion 12 and bending of the front plate 7b having the second embankment portion 12 formed An example of molding will be described. [0058] In FIGS. 14A to 14C, an outline of the formation of the second bank section 12 is shown in a cross section. As shown in FIG. 14A, a lower mold having a concave portion k5a corresponding to the inclined second bank portion 12 is prepared as the lower mold K5. A lower mold having a punch k6a corresponding to the inclined second bank portion 12 is prepared as the lower mold K6. [0059] As shown in FIG. 14B, the metal plate 15 disposed between the lower mold K5 and the upper mold K6 is punched (arrow α3 in FIG. 14B). [0060] Thus, the second bank portion 12 is formed on the metal plate 15 (see FIG. 14C). FIG. 14C shows a case where the second embankment portion 12 faces up to place the metal plate 15 thereon. [0061] In FIGS. 15A to 15C, the outline of the bending forming of the front plate 7b in which the second bank portion 12 is formed is shown in a cross section. Next, as shown in FIG. 15A, the metal plate 15 on which the second bank portion 12 is formed is disposed between a lower mold K7 and an upper mold K8 described later. [0062] The lower die K7 is provided with a bending punch k7a. The upper mold K8 is provided with a concave escape portion k8a that allows the second bank portion 12 to escape. [0063] As shown in FIG. 15B, the metal plate 15 having the second bank portion 12 formed between the lower mold K7 and the upper mold K8 is bent and formed using a bending punch k7a of the lower mold K7 ( Arrow α4 in Figure 15B). Thereby, the front plate 7b on one side of the bottom plate 7a is bent. [0064] The rear plate 7c on the other side of the bottom plate 7a is similarly bent and formed. As a result, the bottom plate 7a having the second embankment portion 12 and the front plate 7b having the second embankment portion 12 bent and formed with respect to the bottom plate 7a are formed as shown in FIG. 15C. [0065] <Draining Effect by First Embankment Part 11 and Drain Trench 13> Fig. 16 shows the drainage action of the first embankment part 11 and the drain trench 13 as viewed from the arrow IV of Fig. 3 With the operation of the fan 5 (refer to FIG. 2), the rainwater outside the outdoor unit Co (refer to FIG. 1) is attracted to the inside. [0066] Moisture that has entered the inside of the outdoor unit Co may come in contact with the electrical article box assembly 6 including the fins 8f. For example, as shown in FIG. 16, water is inserted from the insertion board 9s of the electronic component storage room 7A of the substrate support portion 9 supporting the control substrate 8 (see FIG. 5B) and the left side plate 7e of the electrical box 7 Intruded into the electronic component storage room 7A of the electric article box 7 (arrow β11 in FIG. 16). Then, a part of the intruded water flows into the drainage groove 13 of the bottom plate 7a adjacent to the left side plate 7e (arrow β12 in FIG. 16). The inflowed water flows through the drainage groove 13 (arrow β13 in FIG. 16), and is discharged through the corner hole a3 or the corner hole a4 at the end of the drainage groove 13 shown in FIG. 6. [0067] On the other hand, as shown in FIG. 16, water that does not enter the drainage trench 13 or water that overflows from the drainage trench 13 (arrow β14) is stopped by the convex first bank 11. Instead, it flows back to the drain groove 13 (arrow β15). The water flowing back to the drainage groove 13 is discharged through the drainage groove 13 through the corner hole a3 or the corner hole a4. [0068] The water that has not been stopped by the convex first dike portion 11 passes over the first dike portion 11 (arrow β16). 00 [0069] <Draining action by second embankment section 12 and corner hole a2> FIG. 17 is a top view of the electrical article box 7 and shows the drainage action formed by the second embankment section 12. The water (the arrow β16 in FIG. 17) passing over the first bank 11 flows toward the second bank 12 on the bottom plate 7 a (arrow β17 in FIG. 17). [0070] Furthermore, the water flowing on the bottom plate 7a is stopped by the convex second dike portion 12, and is inclined along the upper dike portion 12a1 of the second dike portion 12 by the inclination of the second dike portion 12. The bank slope portion 12a2 and the lower bank portion 12a3 flow (arrow β18 in FIG. 17), and are then discharged from the corner hole a2 (arrow β19). [0071] Here, the terminal block 10 or the wire outlet 13 (see FIGS. 3 and 6), which are not to be wet with water, is located in the first embankment section 11 relative to the second embankment section 12. On the opposite side, it is possible to prevent the invading water from getting wet on the terminal block 10 or the wire outlet 13. As described above, since the wire outlet 13 is arranged relatively high from the bottom plate 7 a of the electric article box 7, it is also possible to suppress wet from this point. [0072] With the above configuration, the first bank portion 11 and the drainage trench 13 and the second bank portion 12 can be used to smoothly discharge water that has penetrated into the electric article box 7. [0073] <Waterproofing formed by the holes (ai, s1) of the electric article box 7 and the arrangement of the substrate support portion 9> Secondly, with respect to the arrangement of the corner holes ai of the electric article box 7 and the arrangement of the substrate support portion 9 The formed waterproof is explained. [0074] FIG. 18 shows a fitting place between the electrical article box 7 and the substrate support portion 9 to prevent water from entering through the corner holes ai of the electrical article box 7. As described above, since the electrical article box 7 is formed of sheet metal, corner holes ai (i is a natural number) of about 1.0 mm to 1.5 mm are formed in the corners of the electrical article box 7 in the bending process of the sheet metal. . Therefore, water may enter the inside of the electric article box 7 through the corner hole ai (arrow β21 in FIG. 18). [0075] Here, the corner hole ai of the electric article box 7 is provided with a wall portion 9h1 of the substrate support portion 9 opposite to the corner hole ai so that water is not blown directly into the electric article box 7 from the corner hole ai. Way to pose. The water that has entered the inside of the electric article box 7 is discharged through the corner hole ai located below the electric article box 7. [0076] Next, the waterproof formed by the arrangement of the slot s1 of the electric article box 7 and the substrate support portion 9 (see FIG. 3B) supporting the control substrate 8 (see FIG. 5B) will be described. [0077] FIG. 19 shows a fitting place between the joint portion of the electric article box 7 and the substrate support portion 9. The electrical article box 7 may be formed by fitting the first electrical article box 7C and the second electrical article box 7D. In this case, a gap s1 is formed between the first electrical article box 7C and the second electrical article box 7D. There may be a case where water penetrates the inside of the electric article box 7 through the slit s1 (arrow β22 in FIG. 19). [0078] The wall portion 9h2 of the substrate supporting portion 9 is disposed so as to face the slit s1 so that water is not directly blown into the interior of the electric article box 7. The water that has entered the inside of the electric article box 7 is discharged through the corner hole ai located below the electric article box 7. With the structure of FIGS. 18 and 19, water entering from the corner hole ai or the slit s1 of the electrical box 7 can be drained from the corner hole ai without touching the electronic component 8d1. [0079] According to the above configuration, since the first embankment portion 11, the second embankment portion 12, and the drainage groove 13 of the electric article box 7 are integrally formed of sheet metal, the electric article box 7 can be formed into a waterproof structure. In addition, the electrical article box 7 can be formed into a fireproof structure, and can be manufactured inexpensively. [0080] As shown in FIG. 17, since the corner hole a2 of the drainage hole is provided on the opposite side of the mounting surface of the terminal block 10 (the terminal block holder 14) with respect to the second embankment portion 12, it is possible to make The water is drained from the corner hole a2 without touching the terminal block 10. In addition, since the second bank portion 12 is formed asymmetrically with respect to the centerline O of the bottom plate 7a, or the second bank portion 12 is formed at an angle of less than 90 degrees with respect to the flowing direction of the invaded water, water can be made It flows smoothly along the second bank 12 and is then discharged through the corner hole a2. [0081] In addition, since the angular holes a2, a3, a4, and ai which are drainage holes are provided in a large number, and water can be dispersedly discharged, drainage is good. With the drainage structure (11, 12, 13, and ai) of the electronic parts 8d1 of the outdoor unit Co, it is difficult for the electric article box 7 to be completely sealed only by sheet metal or resin molded products, and if moisture enters the inside of the electric article box 7 It can also drain water in such cases. [0082] Therefore, it becomes an additional member that does not require the use of a conventional sheet or silicone to prevent water intrusion. This can reduce the material cost of the outdoor unit Co and shorten the production time. In addition, since the electric article box 7 does not have a sealed structure, air can circulate, and it is more advantageous in terms of heat dissipation than a completely sealed electric article box. [0083] Therefore, according to the air conditioner C in the present invention, the original price of the outdoor unit Co of the air conditioner C can be suppressed, and the reliability can be improved. [0084] <Other Embodiments> 虽然 In the above embodiment, the first and second dike sections 11 and 12 of the waterproof dike section are provided with a plurality of corner holes a2, a3, and a4. There may be a plurality of devices ai and ai, but at least any one of the waterproof dike section and the drainage hole may be provided in plural. [0085] Although various configurations have been described in the above embodiments, the above configurations may be selected and combined as appropriate. In addition, the various structures described in the above embodiments are examples of the present invention, and can be various modified forms or specific forms within the scope of the patent application.

[0086]

1‧‧‧ outer cover

1e‧‧‧outdoor heat exchanger

1k‧‧‧ opening

1m‧‧‧ front board

1u‧‧‧on board

2‧‧‧Piping

3‧‧‧ liquid-gas separator

4‧‧‧compressor

5‧‧‧fan

6‧‧‧ Electrical box components

7‧‧‧Electrical Goods Box (Sheet Metal Box)

7A‧‧‧Electronic parts storage room

7B‧‧‧ Fin Insertion Section

7a‧‧‧ floor

7b‧‧‧Front plate

7c‧‧‧ rear panel

7d‧‧‧Right plate

7e‧‧‧Left plate

7h‧‧‧fin insertion hole

8‧‧‧ substrate (control substrate)

8c‧‧‧Capacitors (Electrical Components)

8d1‧‧‧Electronic Components (Electrical Components)

8h‧‧‧soldering surface

8j‧‧‧construction surface (surface for electrical construction articles)

8p‧‧‧Power Element

8f‧‧‧ fins (radiating fins)

9‧‧‧ substrate support

10‧‧‧Terminal Block

10p‧‧‧jack

11‧‧‧The first dike department (waterproof dike department)

11a‧‧‧Dike Division

11b‧‧‧ Front Dike

11c‧‧‧Hill

12‧‧‧Second Dike Department (Waterproof Dike Department)

12a1‧‧‧Uphill dike

12a2 ‧ ‧ ‧ middle embankment slope

12a3 ‧‧‧ lower bank slope

13‧‧‧ Drain trench

14‧‧‧Terminal block holder (mounting surface)

15‧‧‧ metal plate

C‧‧‧air conditioner

Ci‧‧‧ indoor unit

Co‧‧‧ outdoor unit

K1‧‧‧ bottom die

K2‧‧‧ Upper mold

a1, a2, a3, a4‧‧‧ corner hole

ai‧‧‧holes for electrical box

k1, k2, k3, k4‧‧‧ sheet metal corner

s1‧‧‧ gap

[0014] Fig. 1 is a perspective view showing an outdoor unit of an air conditioner according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which a front plate and an upper plate of an outdoor unit cover are removed. Figure 3 is a perspective view of the electrical goods box assembly viewed from the upper right. FIG. 4 is a perspective view of the electrical goods box assembly viewed from the lower left. Figure 5A is a top view of the electrical goods box assembly. Figure 5B is a sectional view taken along the line I-I in Figure 5A. FIG. 6 is a perspective view of the electrical goods box as viewed obliquely from the upper right. FIG. 7 is a view showing the base plate, the right side plate, and the left side plate partially cut away as viewed from an arrow direction II in FIG. 6. FIG. 8 is a perspective view of the electrical goods box as viewed obliquely from the upper left. Figure 9 is a top view of the electrical box. Figure 10 is an enlarged view taken along the line III-III of Figure 9. Figure 11 is a bottom view of the electrical box. FIG. 12A is a cross-sectional view showing the outline of the formation of the first bank section and the drainage trench. FIG. 12B is a cross-sectional view showing the outline of the formation of the first bank section and the drainage trench. FIG. 12C is a cross-sectional view showing the outline of the formation of the first embankment portion and the drainage trench. FIG. 13A is a drawing showing a curved shape of the left side plate. FIG. 13B is a drawing showing the bending of the left side plate. Figure 13C is a drawing showing the bending of the left plate. FIG. 14A is a cross-sectional view showing the outline of the formation of a second bank section. FIG. 14B is a sectional view showing the outline of the formation of the second embankment section. FIG. 14C is a sectional view showing the outline of the formation of the second embankment section. FIG. 15A is a schematic cross-sectional view showing the bending and forming of the front plate on which the second embankment portion is formed. FIG. 15B is a schematic cross-sectional view showing the bending and forming of the front plate on which the second embankment portion is formed. FIG. 15C is a schematic cross-sectional view showing the bending and forming of the front plate on which the second embankment portion is formed. FIG. 16 is a view showing the drainage action of the first bank and the drainage trench as viewed from the arrow IV in FIG. 3. Figure 17 is a top view of the electrical box, showing the drainage function formed by the second bank. FIG. 18 is a perspective view showing a fitting portion of the electrical article box and the substrate supporting portion that suppresses moisture from entering through the corner holes of the electrical article box. FIG. 19 is a perspective view showing a fitting portion of a joint portion of the electric article box and a substrate support portion.

Claims (8)

An air conditioner is characterized in that it includes an indoor unit and an outdoor unit. The outdoor unit includes: an electrical structured article with fins mounted on a substrate; and a sheet metal box, the sheet metal box is provided with: An electrical structured article storage room for structured articles, and a fin insertion portion through which the fins of the electrically structured article are inserted; the substrate is disposed on the upper side of the sheet metal box, and the soldering surface faces the upper side. The surface of the electrically-structured article is arranged to face downward. On the side of the fin insertion portion of the electrical-structured article storage room, a sheet metal-shaped concave groove and a convex-shaped waterproof dike are provided. The sheet insertion part is opened above the sheet metal box above the drainage groove and the waterproof dike. The air conditioner according to item 1 of the patent application scope, comprising: a terminal block for connecting the indoor unit and the outdoor unit by a cable; and a bottom plate of the sheet metal box is the same as a mounting surface on which the terminal block is mounted. The waterproof dike section is provided on the side, and a first drainage hole is provided on the opposite side of the mounting surface of the terminal block with respect to the waterproof dike section. The air conditioner according to item 1 of the scope of the patent application, wherein at least any one of the waterproof dike section and a drainage hole for discharging water from the sheet metal box is provided with a plurality. The air conditioner according to item 1 of the scope of patent application, wherein the waterproof dike portion is configured in an asymmetric shape. The air conditioner according to item 1 of the scope of the patent application, wherein the waterproof dike section is inclined less than 90 degrees with respect to the flowing direction of the invaded water. The air conditioner according to item 1 of the patent application range, wherein the drainage groove is connected to the second drainage hole. The air conditioner according to item 1 of the scope of patent application, wherein the waterproof dike section includes a first dike section and a second dike section, and the drainage ditches, the first dike section, and the second dike The first embankment part is formed along the direction of the drainage groove; the second embankment part is formed with an inclination of less than 90 degrees relative to the first embankment part, and is formed relative to the second embankment The first drain hole is formed on the same side as the first bank portion. The air conditioner according to item 1 of the scope of application for a patent, wherein a substrate supporting portion for arranging the substrate is disposed to face the hole of the sheet metal box.