JP5877359B2 - Air conditioner outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit of an air conditioner.

  In general, an air conditioner in which a partition plate for partitioning a heat exchange chamber and a machine room is erected on the bottom plate of a housing, a heat exchanger and a blower are housed in the heat exchange room, and a compressor and an electrical unit are housed in the machine room The outdoor unit is known. In this type of outdoor unit, conventionally, an electrical component provided in the electrical component unit is connected to a heat sink by dissipating heat generated by the electrical component, and the heat sink is connected to the heat exchange chamber through an opening communicating the heat exchange chamber and the machine room. In order to prevent the intrusion of water such as rainwater from the heat exchange chamber side into the machine room side through the opening, there is something that cools the heat sink with the wind flowing in the heat exchange chamber. The heat sink is covered with a waterproof cover, or a flood prevention plate is attached to the opening (for example, see Patent Document 1).

JP 2009-186091 A

However, when the heat sink is covered with a waterproof cover, the air flow blown to the heat sink is hindered by the cover, so that the cooling efficiency of the heat sink decreases. Even when a flood prevention plate is attached to the opening communicating with the heat exchange chamber and the machine room, water enters the machine room from the fitting surface of the heat sink and the opening. It was necessary to prevent water from entering the machine room by attaching the, and the assembly workability was poor.
SUMMARY OF THE INVENTION An object of the present invention is to provide an outdoor unit of an air conditioner that is made in consideration of the above-described circumstances and prevents water from entering a machine room with a simple structure.

In order to solve the above-mentioned problems, the present invention includes a partition plate extending in a vertical direction that divides the inside of a housing into a heat exchange chamber and a machine room, and houses a heat exchanger and a blower in the heat exchange chamber. In the outdoor unit of the air conditioner in which the compressor and the electrical unit are housed, the electrical unit is configured by attaching a heat sink to a substrate holder that constitutes the upper part of the partition plate, and the substrate holder is configured such that the heat sink is a heat exchange chamber. Guided by a pair of guide rails toward the side and provided so as to be able to be drawn upward from the upper part of the partition plate. It formed in the member, through the fitting surface of the substrate holder and the guide rail, and dammed water flooded into the machine chamber side, to the waste water to the heat exchange chamber side The waterproof part is provided, the waterproof portion may formed by bending the machine room side end portion of the upper portion of the partition plate body upward.
According to this configuration, the waterproof part functions as a weir that prevents water entering from the fitting surface between the guide rail and the substrate holder from entering the machine room. Can be prevented.

In this configuration, the pair of guide rails are rails having a substantially U-shaped cross section facing each other and facing an opening that communicates the machine room and the heat exchange chamber, and the side edges of the substrate holder are disposed on the side edges of the substrate holder. It is good also as a structure inserted in the inside of a guide rail, and closing the said opening part with the board | substrate attached to the said board | substrate holder integrally with the said heat sink. The support member may support the second substrate in a substantially T shape with respect to the substrate. The substrate holder may be configured integrally with a hood that is provided above the heat sink and closes the opening, and a flood prevention plate that is provided below the heat sink and closes the opening.

  According to the present invention, there is provided a partition plate extending vertically to divide the inside of the housing into a heat exchange chamber and a machine room, the heat exchanger and the blower are accommodated in the heat exchange chamber, and the compressor and electrical equipment are contained in the machine room. In the outdoor unit of the air conditioner that houses the unit, the electrical unit is configured by attaching a heat sink to a substrate holder that constitutes the upper part of the partition plate, and the substrate holder has a pair of heat sinks facing the heat exchange chamber side. The guide rail is provided so as to be able to be drawn upward from the upper part of the partition plate, and the water immersed in the machine room is blocked through the fitting surface between the guide rail and the substrate holder, and the heat Since the waterproof part for draining is provided on the exchange chamber side, the waterproof part blocks the water submerged into the machine room side through the fitting surface of the guide rail and the substrate holder. Therefore, it is possible to prevent water from entering the machine room with a simple structure.

It is an external appearance perspective view of the outdoor unit which concerns on embodiment to which this invention is applied. It is a perspective view which shows the internal structure of an outdoor unit. It is a perspective view which shows the internal structure of the outdoor unit of a state which removed the electrical equipment unit. It is a perspective view which shows an electrical equipment unit. It is a top view which shows the temporary support structure of an electrical equipment unit. It is the perspective view which looked at the electrical equipment unit and the partition plate from the back side. FIG. 5 is a cross-sectional perspective view of the cross section of the electrical unit and the partition plate cut in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The air conditioner according to the present embodiment includes an outdoor unit 10 and an indoor unit (not shown), and performs a cooling operation and a heating operation by flowing a refrigerant through a refrigerant circuit connected by a refrigerant pipe. The outdoor unit 10 is installed outside, exchanges heat with outdoor air, condenses the refrigerant during the cooling operation and releases heat to the outside air, and evaporates the refrigerant during the heating operation and takes in heat from the outside air. In addition, the directions such as up and down and left and right described below indicate directions when the outdoor unit 10 is viewed from the front side in a state where the outdoor unit 10 is installed.

  FIG. 1 is a perspective view of the outdoor unit 10. The outdoor unit 10 includes a substantially rectangular parallelepiped box-shaped unit case (housing) 11, and the unit case 11 includes a bottom plate 12, a ceiling panel 13, a front panel 14, and an outer plate 15. The inside of the unit case 11 is partitioned vertically by a partition plate 16 erected on the bottom plate 12, and is divided into a heat exchange chamber R1 and a machine chamber R2. The front panel 14 includes a first front panel 14A and a second front panel 14B that are divided into left and right parts with a partition plate 16 as a boundary. By removing the first front panel 14A, the operator can perform maintenance work on components in the heat exchange chamber R1 from the front side of the outdoor unit 10, and by removing the second front panel 14B, the operator can perform outdoor work. Maintenance work of parts in the machine room R2 can be performed from the front side of the unit 10.

  In addition, the first front panel 14A on the heat exchange chamber R1 side is formed with two air outlets 28 and 28 that blow out the air heat-exchanged inside the heat exchange chamber R1 in the vertical direction. The air outlets 28 and 28 are each covered with a net-like fan guard 29. Although not shown, the air outlets 28 and 28 are covered with, for example, a round flange-shaped fan cover, and a blower 22 described later is provided in the opening of the fan cover.

  FIG. 2 is a perspective view of the outdoor unit 10 with the ceiling panel 13, the front panel 14, and the outer plate 15 removed. The inside of the unit case 11 is divided into a heat exchange chamber R1 and a machine room R2 by a partition plate 16 standing on the bottom plate 12. As shown in FIG. 2, the heat exchanger 21 accommodates the heat exchanger 21 on the back side and the blowers 22 and 22 arranged in the vertical direction on the front side. The heat exchanger 21 is formed by being bent into a substantially L shape when viewed from above, and is disposed along the back surface from the left side surface (outer side surface) of the heat exchange chamber R1. Thus, the heat exchanger 21 forms the left side surface and the back surface of the heat exchange chamber R1 (that is, the unit case 11), and the entire exposed surface from the left side surface to the back surface functions as a ventilation path (suction port). Although not shown, the surface of the heat exchanger 21 is covered with a finger made of a resin net or the like in order to prevent a human body or the like from contacting the heat exchanger 21.

The blower 22 is attached to a pair of left and right struts 24L and 24R disposed in the heat exchange chamber R1. These struts 24L and 24R hook the upper ends of the struts 24L and 24R to the upper edge of the heat exchanger 21, respectively, and the lower ends of the struts 24L and 24R are fixed to the bottom plate 12 by screws.
The blower 22 includes a fan motor 26 fixed to the upper portions of the support posts 24L and 24R via a pedestal 25, and a propeller fan (axial fan) 27 attached to the shaft of the fan motor 26. The propeller fan 27 is disposed close to the front side of the heat exchange chamber R1. When the propeller fan 27 is rotationally driven by the fan motor 26, outside air is sucked into the heat exchange chamber R1 from the periphery of the outdoor unit 10, more specifically from the back side and the left side of the heat exchanger 21, and heat is generated. Heat is exchanged with the refrigerant flowing in the exchanger 21, and the air is discharged out of the outdoor unit 10 through the air outlets 28 and 28 provided on the front surface of the heat exchange chamber R1. That is, the outdoor unit 10 is configured as a front blowing type that blows out air after heat exchange from the front.

  Further, the machine room R2 includes a compressor 31 that constitutes a part of the refrigerant circuit, an accumulator (not shown), a receiver tank 33, an oil separator (not shown), and valves such as a four-way valve 32 and an expansion valve (not shown). A refrigerant circuit component such as a body is connected by piping, and is accommodated in a substantially lower space of the machine room R2.

  A gas pipe service valve and a liquid pipe service valve are fixed in close proximity to the upper right side of the compressor 31 and on the front side of the machine room R2. The gas pipe service valve and the liquid pipe service valve are respectively connected to a gas pipe and a liquid pipe (not shown) of unit piping extending from the indoor unit, thereby constituting a refrigerant circuit for circulating the refrigerant. In addition, an electrical unit 40 in which various electrical components such as a control board for controlling the air conditioner are disposed is disposed above the machine room R2. The electrical unit 40 includes a support member 50, a first substrate 41, a second substrate 42, and a heat sink 55 that are supported by the support member 50. The electrical unit 40 is integrated with the support member 50, and the heat sink 55 is fitted into the opening 5 that communicates the heat exchange chamber R1 and the machine room R2, and fins 55A described later are stretched to the heat exchange chamber R1 side. It faces the heat exchange chamber R1 so as to exit, and is provided in the upper space of the machine room R2. The support member 50 extends in the width direction of the partition plate 16, that is, in the front-rear direction of the unit case 11.

  As shown in FIG. 3, the partition plate 16 is disposed between the heat exchange chamber R1 and the machine room R2, and separates the heat exchange chamber R1 and the machine room R2 from the partition plate body (partition plate body) 16B. And the front side (end) 16C formed by bending the front side edge of the partition plate body 16B toward the machine room R2, and the side edge on the back side of the partition plate body 16B as the machine room R2. On the side, a back surface portion (end portion) 16D formed by bending substantially parallel to the front surface portion 16C, and an upper surface portion (upper end surface) 16A formed by bending the upper edge portion of the partition plate main body portion 16B to the machine chamber R2 side. With. The partition plate 16 is formed by bending a thin sheet metal as described above to improve the rigidity (strength) of the partition plate 16.

  The partition plate 16 is erected on the bottom plate 12 and fixed by screwing the back surface portion 16D to the heat exchanger 21. Specifically, the heat exchanger 21 includes a tube plate 35 at the right end, and the tube plate 35 is formed with a rib 35A in which a side edge portion inside the unit case 11 is bent into a substantially L shape. Yes. The partition plate 16 is fixed by screwing the back surface portion 16D to the rib 35A. An opening 5 is provided above the partition plate 16 to communicate the heat exchange chamber R1 and the machine chamber R2.

  As shown in FIG. 2, the electrical unit 40 is placed on and connected to the upper surface portion 16 </ b> A of the partition plate 16. As shown in FIG. 4, the electrical unit 40 is integrated with the support member 50, and the first substrate 41, the second substrate 42, and the heat sink 55 are supported on the support member 50. The first substrate 41 and the heat sink 55 are integrally fixed by a substrate holder 51, and the substrate holder 51 is detachably supported by the support member 50. The support member 50 includes a pair of guide rails 43, 43 that face the opening 5 that connects the heat exchange chamber R <b> 1 and the machine chamber R <b> 2 and are provided directly above the partition plate 16. The guide rails 43 and 43 are substantially U-shaped cross-section rails facing each other, one guide rail 43 extends to the front surface portion 16C of the partition plate 16, and the other guide rail 43 is in the vicinity of the back surface portion 16D. Extend.

A substrate holder 51 is attached between the guide rails 43. More specifically, the board holder 51 has both side edges 51A fitted between the guide rails 43 and is guided by the guide rails 43 integrally with the first board 41 and the heat sink 55 so that the upper side of the partition plate 16. It can be pulled out. The substrate holder 51 is formed in a frame shape by resin molding, and is emitted from a first substrate 41 on which an electrical component with a large amount of heat generation such as a hybrid IC (HIC) 57 is mounted, and an electrical component mounted on the first substrate 41. The heat sink 55 for radiating the generated heat is fixed integrally.
More specifically, the first substrate 41 is fixed to the substrate holder 51 with screws or the like so that an electrical component with a large amount of heat generation faces the opening of the frame-shaped substrate holder 51 and closes the opening. The electrical component having a large heat generation mounted on the first substrate 41 is thermally connected to the heat sink 55 through the opening of the substrate holder 51. The heat sink 55 has a configuration in which metal plate members constituting the plurality of fins 55A are arranged at intervals in the vertical direction. The heat sink 55 is provided such that the fins 55 </ b> A project on the surface opposite to the surface on which the first substrate 41 is provided, and the outer periphery is fitted into the opening of the substrate holder 51.

  As described above, the first substrate 41 and the heat sink 55 are provided integrally with the substrate holder 51 so as to close the opening 5 that communicates the heat exchange chamber R1 and the machine chamber R2. In addition, the heat sink 55 is provided in the electrical unit 40 so that the front and rear end portions are fitted to the opening 5 and the plurality of fins 55A project to the heat exchange chamber R1 side. According to this configuration, the heat generated from the electrical components mounted on the first substrate 41 is radiated to the heat sink 55, and the heat sink 55 can be cooled by the wind flowing in the heat exchange chamber R1. The heat generated by the electrical components mounted on the first substrate 41 can be efficiently dissipated.

  A hood 59 that covers most of the entire projected area of the heat sink 55 is fixed to the substrate holder 51 at the top of the heat sink 55. The hood 59 is opened upward, and is formed in a substantially box shape in which the side surface on the machine room R2 side is cut out from front to back. The hood 59 is formed such that the upper end surfaces 59B of the three side surfaces 59A are in contact with the lower surface of the ceiling panel 13 of the unit case 11. According to this configuration, it is possible to prevent water such as rainwater that has entered the heat exchange chamber R1 from the back side of the heat exchanger 21 from entering the machine room R2 side from above the heat sink 55 with the hood 59.

  Further, the bottom surface 59C is cut out along the side surface 59A on the heat exchange chamber R1 side in the hood 59, and a cutout portion 59D that connects the upper space of the hood 59 and the heat exchange chamber R1 is formed. The air in the machine room R2 is attracted by the air flowing through the heat exchange chamber R1, and flows into the heat exchange chamber R1 through the notch 59D. Therefore, the air heated by the heat generated from the electrical components included in the electrical unit 40 can be circulated without being trapped in the machine room R2. According to these configurations, water such as rainwater that has entered the heat exchange chamber R1 from the back side of the heat exchanger 21 can be prevented from entering the machine room R2 side from the top of the heat sink 55. It is not necessary to cover the entire 40 with a case or the like. Therefore, the number of parts of the electrical unit 40 can be reduced, and the substrate 41 provided in the electrical unit 40 can be attached and detached simply by removing one of the panels (plates) of the unit case 11. Can be improved.

  The support member 50 includes a second substrate mounting plate 45 that supports the second substrate 42 at a substantially right angle to the first substrate 41. The second board attachment plate 45 is attached to a lower part of the second board attachment part 45A provided substantially parallel to the guide rail 43, and a base part 45B formed in a substantially L-shaped cross section. With. The second substrate 42 is fixed to the second substrate attachment portion 45A by a fastener such as a screw 47. Alternatively, the second substrate 42 may be configured to be sandwiched between the second substrate attachment portion 45A with a clip or other fastener.

  The base portion 45B is provided at the lower end of the second substrate mounting portion 45A so as to protrude toward the front side of the machine room R2. The base portion 45B is provided with a terminal block mounting portion 45C including a plurality of terminal blocks 46A and 46B to which power supply terminals and connectors are coupled so as to hang down below the electrical unit 40. A communication line for communicating with an indoor unit or the like is connected to the terminal block 46A. A power line for supplying power to the outdoor unit 10 is connected to the terminal block 46B. Further, clips 46C and 46D for fixing the communication line and the power supply line are attached to the terminal block attaching portion 45C.

  In addition, a fixing portion 45D is formed on the left edge of the second substrate mounting portion 45A and the base portion 45B. Although not shown in the drawings, the fixing portion 45D extends to the surface to be attached to the outer plate 15 and the second front panel 14B, and is formed by bending the edge of the outer plate 15 to the inside of the unit case 11 and screwing it to the side edge portion. It is fixed with. The second substrate mounting portion 45A, the base portion 45B, the terminal block mounting portion 45C, and the fixing portion 45D are integrally formed by subjecting one metal plate to sheet metal processing such as bending.

  The substrate holder 51 includes a hook 58 provided above the first substrate 41. The hook 58 is formed of a metal such as aluminum, and has a hook claw 58A formed by bending the tip downward. A hook groove 58 </ b> B is formed on the upper end surface of the second substrate mounting plate 45. When the substrate holder 51 is attached to the support member 50, the hooking claws 58A are locked in the hooking grooves 58B.

  In addition, the substrate holder 51 includes two screw holes 51E and 51E provided in the vicinity of the guide rails 43 and 43 in the upper part of the substrate holder 51. The substrate holder 51 is fixed to the support member 50 by screws inserted from the machine room R2 side through the screw holes 51E. That is, the substrate holder 51 is fixed to the support member 50 at the three points of the hooking claw 58A and the screw holes 51E and 51E. Further, since the hooking claws 58A for fixing the substrate holder 51 to the support member 50 and the screw holes 51E and 51E are all provided at the upper portion of the substrate holder 51, the upper opening of the outdoor unit 10 from which the ceiling panel 13 is removed. The substrate holder 51 can be easily removed.

  The support member 50 includes a plate-like member 54 that extends to the back surface portion 16 </ b> D of the partition plate 16 and extends above and below the support member 50. The plate-like member 54 is fixed to the side surface of the heat exchange chamber R1 side of the guide rail 43 located behind the unit case 11 with a screw or the like so as to project to the back side of the support member 50, and along the back surface portion 16D. It is bent into a substantially L shape on the machine room R2 side. Thus, the support member 50 is formed with a recess 54A between the plate-like member 54 and the rear guide rail 43, into which the rib 35A formed on the tube plate 35 of the heat exchanger 21 is fitted. .

  The partition plate 16 is fixed by screwing the back portion 16D of the partition plate 16 to the rib 35A formed on the tube plate 35 of the heat exchanger 21 that is erected and fixed on the bottom plate 12, and the electrical unit 40 is integrated. The support member 50 is placed on the upper surface portion 16A of the partition plate main body portion 16B by fitting the rib 35A into the recess 54A. Next, as shown in FIG. 5, the front surface 54C of the back side edge 54B of the plate-like member 54 and the back surface 35B of the rib 35A are brought into contact with each other, and the back side edge 54B is screwed up and down 2 to the rib 35A. Fix in place. The electrical unit 40 is supported in the unit case 11 by fixing the fixing portion 45D of the support member 50 to the outer plate 15 with screws or the like after attaching the outer plate 15 to the unit case 11 in the final process of assembling the outdoor unit 10. Is done.

  Further, the support member 50 includes a support plate 48 having a substantially L-shaped cross section that connects the second board mounting portion 45 </ b> A and the guide rail 43. A space R3 is formed between the back side of the second substrate 42 and the first substrate 41 by the support plate 48, and an electrolytic capacitor 56 accommodated in the space R3 is mounted on the first substrate 41. . According to this configuration, since the rigidity of the support member 50 that supports the first substrate 41 and the second substrate 42 in a substantially T shape by the support plate 48 can be increased, the weight of the electrical unit 40 can be reduced. Can do. Further, since the electrolytic capacitor 56 is surrounded by the support plate 48 and accommodated in the space R3, it is possible to prevent the electrolytic capacitor 56 from being damaged by colliding with the electrolytic capacitor 56 during the assembly operation. Can do.

  FIG. 6 is a perspective view of the partition plate 16 and the electrical unit 40 viewed from the back side of the outdoor unit 10 with the heat exchanger 21 and the outer plate 15 removed. In FIG. 6, the heat exchanger 21 is not shown, but the heat exchanger 21 is attached to the unit case 10 before the partition plate 16 is attached, and the rear portion 16D of the partition plate 16 is attached. The plate-like member 54 is fixed to the tube plate 35 of the heat exchanger 21 with screws or the like.

  A hood 59 is provided on the top of the heat sink 55 in which the front and rear ends are fitted to the opening 5. Between the plurality of fins 55 </ b> A of the heat sink 55, the air sucked into the heat exchange chamber R <b> 1 through the heat exchanger 21 flows by the blower 22 as indicated by arrows in FIG. 6. Water such as rainwater may enter the heat exchange chamber R1 through the heat exchanger 21 along the air flow, and the water that has entered the heat exchange chamber R1 is rotated by the propeller fan 27 of the blower 22. The surface of the support member 50 is exposed to the heat exchange chamber R1 and the heat sink 55. A hood 59 is provided in the upper part of the heat sink 55, and this hood 59 can prevent water from entering the machine room R <b> 2 from above the heat sink 55.

  A first support plate 44 that connects the guide rails 43 and closes the lower portion of the opening 5 that connects the heat exchange chamber R <b> 1 and the machine chamber R <b> 2 is provided on the support member 50 at the lower portion of the heat sink 55. Further, the substrate holder 51 is provided with a flood prevention plate 65 fixed integrally with the heat sink 55. The infiltration prevention plate 65 is provided so as to cover the upper end portion of the first support plate 44, and prevents water from entering the contact surface with the substrate holder 51 from above the first support plate 44.

  By the way, in the present embodiment, the cooling efficiency of the heat sink 55 is improved without providing a cover or the like before and after the heat sink 55, that is, at the wind inlet / outlet of the fin 55A. That is, the air sucked into the heat exchange chamber R <b> 1 by the blower 22 and passed through the heat exchanger 21 flows between the fins 55 </ b> A of the heat sink 55. Therefore, before and after the heat sink 55, rainwater or the like may enter the fitting surface S between the heat sink 55 and the opening 5 from the wind entrance / exit of the fin 55A.

  FIG. 7 is a view in which the electrical unit 40 and the partition plate 16 are cut along aa in FIG. 4 and the cross section is viewed from the direction of the arrow X in the figure. As shown in FIG. 7, a flooding prevention portion (waterproof portion) 16E is provided on the upper surface portion 16A of the partition plate main body portion 16B on which the support member 50 is placed. The inundation preventing portion 16E is formed by bending the end of the upper surface portion 16A on the machine room R2 side substantially vertically upward. The inundation preventing portion 16E is formed by bending the lower end of the first support member 44 in a substantially L shape on the machine chamber R2 side, and the end portion on the machine chamber R2 side of the pedestal portion 52 on which the lower end of the substrate holder 51 is placed. It is provided so as to surround. Water that has entered the contact surface between the support member 50 and the substrate holder 51 from the fitting surface S of the heat sink 55 and the opening 5 forms the contact surface between the support member 50 and the substrate holder 51 by its own weight. Accordingly, the pedestal 52 is collected, but according to this configuration, the inundation prevention unit 16E surrounding the machine chamber R2 side end of the pedestal 52 is provided integrally with the partition plate 16, and thus the inundation prevention unit 16E. However, the water collected in the pedestal portion 52 dams up the water that infiltrates the machine room R2 side. As a result, the water collected in the pedestal portion 52 is drained to the heat exchange chamber R1 side through between the upper surface portion 16A of the partition plate main body portion 16B and the pedestal portion 52. For this reason, the heat sink 55 can be efficiently cooled without blocking the air passage between the fins 55A of the heat sink 55, and water can be prevented from entering the machine room R2.

  As described above, according to the embodiment to which the present invention is applied, the vertically extending partition plate 16 that divides the inside of the unit case (housing) 11 into the heat exchange chamber R1 and the machine room R2 is provided, and heat exchange is performed. In the outdoor unit 10 of the air conditioner in which the heat exchanger 21 and the blower 22 are accommodated in the chamber R1, and the compressor 31 and the electrical unit 40 are accommodated in the machine room R2, the electrical unit 40 constitutes the upper part of the partition plate 16. A heat sink 55 is attached to the substrate holder 51, and the substrate holder 21 can be drawn upward from the upper part of the partition plate 16 by being guided by the pair of guide rails 43, 43 with the heat sink 55 facing the heat exchange chamber R1. Water that is immersed in the machine room R2 side is blocked through the fitting surface between the guide rails 43, 43 and the substrate holder 51, and is discharged to the heat exchange room R1 side. Since the waterproof part 16E is provided, the waterproof part 16E blocks the water submerged from the heat exchange chamber R1 side to the machine room R2 side through the fitting surfaces of the guide rails 43, 43 and the substrate holder 51, thereby exchanging heat. Since the water is discharged to the chamber R1 side, it is possible to prevent water from entering the machine room R2 with a simple structure.

  Further, according to the embodiment to which the present invention is applied, the pair of guide rails 43, 43 are connected to the upper surface portion (upper end portion) 16A of the partition plate body portion 16B, and the waterproof portion 16E is connected to the partition plate body portion 16B. Since the end of the upper end portion 16A on the machine room R2 side is bent upward, water intrusion to the machine room R2 side is allowed without increasing the number of parts and at the joint between the upper surface portion 16A and the waterproof portion 16E. Without forming a gap, the waterproof part 16E can be easily formed, and water intrusion into the machine room R2 can be prevented with a simple structure.

  Further, according to the embodiment to which the present invention is applied, the pair of guide rails 43, 43 face the opening 5 that communicates the machine room R2 and the heat exchange chamber R1, and are substantially U-shaped cross-section rails facing each other. Since the side edge of the substrate holder 51 is inserted inside the guide rails 43 and 43 and the opening 5 is closed with the substrate 41 integrally attached to the heat sink 55 on the substrate holder 51, the maintenance of the substrate 41 is performed. The substrate 41 and the heat sink 55 can be easily removed from the support member 50 for maintenance, and the maintainability of the substrate 41 can be improved. Further, the electrical component mounted on the substrate 41 is connected to the heat sink 55 through the opening 5, and the heat generated by the electrical component is efficiently radiated using the heat sink 55 cooled by the air flowing through the heat exchange chamber R1. Can do.

  Further, according to the embodiment to which the present invention is applied, the guide rails 43 and 43 are connected to the upper end portion 16A of the partition plate main body portion 16B and are formed on the support member 50 that supports the electrical unit 40. 16 is connected to the guide rail 43 formed on the support member 50, and the substrate holder 51 is fitted to the guide rail 43 so that the mechanical chamber R1 and the heat exchange chamber R2 can be communicated with each other through an opening. With the heat sink 55 facing the machine room R1 side, the heat sink 55 and the substrate 41 can be integrally provided so as to be able to be drawn upward from the upper part of the partition plate 16, and assembling workability and maintainability are improved. Can do. Further, since the waterproof portion 16E can prevent water from entering the machine room R1, the mating surface between the guide rail 43 and the substrate holder 51 does not need to be provided with packing or the like for preventing water from entering. 51 can be easily ejected upward from the guide rail 43.

  Further, according to the embodiment to which the present invention is applied, the support member 50 supports the second substrate 42 in a substantially T shape with respect to the first substrate 41, so that the electrical unit 40 is not removed from the unit case 11. The maintenance of the second substrate 42 can be performed from the opening on the front side of the machine room R1 from which the front panel 14B is removed, and the maintainability of the electrical unit 40 is improved. Further, since the flooding into the machine room R2 side is prevented by the prevention unit 16E, the plurality of substrates 41 and 42 are supported on the support member 50 and disposed in the machine room R2 without covering the electrical unit 40 with a cover or the like. Therefore, it is possible to reduce the number of parts and improve the maintainability.

  Further, according to the embodiment to which the present invention is applied, the substrate holder 51 is provided at the upper part of the heat sink 55, and the hood 59 that closes the opening 5, and the water prevention that is provided at the lower part of the heat sink 55 and closes the opening 5. Since the plates 44 and 65 are integrally provided, water such as rainwater enters the machine room R2 from the gap between the heat sink 55 and the ceiling panel 13 or the gap between the substrate holder 51 and the support member 50 in the lower area of the heat sink 55. Intrusion can be prevented, and water intrusion into the machine room R2 can be prevented with a simple structure.

R1 heat exchange chamber R2 machine room 5 opening 10 outdoor unit 11 unit case (housing)
12 Bottom plate 16 Partition plate 14B Front panel 16A Upper surface (upper surface)
16B Partition body (partition body)
16E Water-proof part (waterproof part)
21 Heat Exchanger 35 Tube Sheet 40 Electrical Unit 41 First Board (Board)
43 Guide rail 50 Support member 51 Substrate holder 55 Heat sink 59 Hood 65 Flood prevention plate

Claims (4)

An air conditioner having a vertically extending partition that divides the housing into a heat exchange chamber and a machine room, a heat exchanger and a blower accommodated in the heat exchange chamber, and a compressor and an electrical unit accommodated in the machine chamber In the outdoor unit of the device,
The electrical unit is configured by attaching a heat sink to a substrate holder that constitutes an upper portion of the partition plate, and the substrate holder is guided by a pair of guide rails with the heat sink facing the heat exchange chamber, It is provided so that it can be pulled out from the top,
The pair of guide rails are formed on a support member that is connected to an upper end portion of the partition plate body and supports the electrical unit.
A waterproof part is provided that dams up water that is immersed in the machine room through the fitting surface of the guide rail and the substrate holder, and drains the water to the heat exchange room, and the waterproof part is an upper end of the partition plate body. An outdoor unit of an air conditioner , wherein the machine room side end of a part is bent upward . The pair of guide rails are rails having a substantially U-shaped cross section facing each other and facing an opening that communicates the machine room and the heat exchange chamber, and the side edges of the substrate holder are arranged on the inner side of the guide rail. The outdoor unit of the air conditioner according to claim 1, wherein the outdoor unit of the air conditioner according to claim 1 , wherein the opening is closed by a substrate integrally attached to the heat sink to the substrate holder. The outdoor unit of an air conditioner according to claim 1 or 2 , wherein the support member supports the second substrate in a substantially T shape with respect to the substrate. The substrate holder according to claim 2, wherein the hood for closing the opening provided in the upper part of the heat sink, further comprising integrally, and prevent flooding plate provided at a lower portion of the heat sink closes the opening Or the outdoor unit of the air conditioning apparatus of 3 .

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