JP7276651B2 - outdoor unit of air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an outdoor unit for an air conditioner, and more particularly to the structure of an electrical component unit provided in the outdoor unit.

A multi-room air conditioner is known in which one outdoor unit installed outdoors and one or more indoor units installed in an air-conditioned room are connected via refrigerant pipes. The interior of the outdoor unit consists of a machine room with a compressor, accumulator, piping, etc., and a heat exchanger, ventilation fan, etc. It is divided into a fan room and a fan room.

The upper part of the machine room is equipped with an electrical component storage section, and there is an electrical component unit equipped with a power supply that supplies drive power to equipment such as the compressor and blower fan, and a control board that controls the operation of the outdoor unit. placed.

For example, in the outdoor units described in Patent Documents 1 and 2, as electrical component units, a first electrical component unit in which predetermined electrical components are mounted on an electrical component part partition plate disposed above the partition plate; A second electrical component unit is provided in which a predetermined electrical component is mounted on a mounting substrate supported openably and closably in a door shape on the front end of the first electrical component unit on the panel side.

Among the multi-room type air conditioners, a large model such as a building multi-air conditioner (VRF) in particular requires a large amount of electric power, and therefore the number of electric parts increases.

Therefore, a third electrical component unit is newly arranged in the upper part of the electrical component storage section that stores the electrical component units, and the third electrical component unit includes, for example, an electrolytic capacitor and a resistor that constitute a rectifier circuit for preventing inrush current. Implementation is being done.

Although electrolytic capacitors are explosion-proof, in many cases the electrolyte inside them is flammable. Since there are many combustible materials such as heat insulating material and sound absorbing material in the machine room, it is important to take measures to prevent the spread of fire in case the electrolytic capacitor catches fire for some reason.

Conventional air conditioners prevent the spread of fire by securing a distance from the ignition source, such as an electrolytic capacitor, to combustibles. It is difficult to secure sufficient distance for use. In addition, mounting parts such as electrolytic capacitors and resistors may drop and spread fire due to the burning of the board. In addition, the dropping of mounted components may damage other electrical components and substrates.

JP 2012-159222 A JP 2013-50255 A

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to take effective measures to prevent the spread of fire in electrical equipment units arranged in the machine room of an outdoor unit of an air conditioner.

In order to solve the above-described problems, the present invention divides the interior of a housing into a fan chamber and a mechanical chamber having an electrical component storage section by a partition plate, and a circuit board is provided with a heat-generating electricity in the electrical component storage section. An air conditioner having an electrical component unit including a specific electrical component unit in which parts are mounted , and a barrier tray for receiving falling objects from the exothermic electrical component is arranged below the specific electrical component unit. In the outdoor unit of the machine,
The heat-generating electrical components include a strong heat-generating electrical component with high heat-generating energy and a weak heat-generating electrical component with low heat-generating energy. 1 region and a second region corresponding to the weakly heat-generating electrical component, wherein the distance between the first region and the specific electrical component unit is greater than the distance between the second region and the specific electrical component unit and an inclined surface is formed for guiding the falling object from the second area to the first area .

It is preferable that ventilation holes are provided in predetermined portions of the barrier tray other than immediately below the heat-generating electrical components.

According to the present invention, by arranging the barrier tray under the specific electrical component unit, it is possible to receive falling objects from the heat-generating electrical components, thereby preventing the spread of fire and damage to surrounding members.

BRIEF DESCRIPTION OF THE DRAWINGS The front side perspective view which shows one Embodiment of the outdoor unit of the air conditioner by this invention. The back side perspective view of the outdoor unit of the said air conditioner. The perspective view which shows the internal structure of the outdoor unit of the said air conditioner. FIG. 4 is an enlarged perspective view showing an electrical component unit provided in the outdoor unit of the air conditioner. FIG. 4 is a perspective view showing parts of a lower partition plate and an electrical part partition plate of the electrical component unit; The perspective view which shows the attachment state of the said electrical component unit. The perspective view which shows the said electrical part partition plate. FIG. 2 is an exploded perspective view showing the electrical component unit; FIG. 2 is a perspective view showing a framework of the electrical component unit; (a) A left side perspective view and (b) an exploded view showing a first electrical component unit included in the electrical component unit. AA partial sectional view of FIG. The right side perspective view showing the inside of the electrical component unit. FIG. 4 is a perspective view showing a top board and a board fixing tool provided in the electrical component unit in a separated manner; The perspective view which shows the assembly method of the 3rd electrical component unit contained in the said electrical component unit. FIG. 4 is a perspective view showing another embodiment of the electrical part partition plate of the electrical part unit; (a) A perspective view showing an upper part of another embodiment of the electrical component part partition plate, (a) A schematic diagram for explaining the bending angle of the second electrical component part partition plate with respect to the first electrical component part partition plate. FIG. 4 is a schematic perspective view showing a state in which the electrical component unit is lifted using a handle provided inside. As a preferred embodiment of the present invention, a perspective view of a main portion showing an example in which a receiving plate for an electrical component unit is provided at the upper end of the lower partition plate. (a), (b) Explanatory drawing which shows the state which moves an electrical component unit to a fixing position by using the said receiving plate as a guide. FIG. 4 is a perspective view showing an embodiment with improved heat dissipation paths of a second electrical component unit included in the electrical component unit; FIG. 20 is a perspective view in which the direction of flow of cooling air is written in FIG. 20; The side view which shows the 3rd electrical component unit to which the barrier tray (integrated type) was attached. The perspective view which shows the said barrier tray (integrated type). (a) A plan view and (b) a bottom view of the barrier tray (integrated type). The perspective view which shows the barrier tray (split type) of another aspect. FIG. 2 is an exploded perspective view showing the barrier tray (split type). FIG. 4 is an enlarged perspective view showing a preferable male side of fitting means applied to the barrier tray (split type); FIG. 2 is a rear perspective view of the barrier tray (split type). The perspective view explaining how to attach the said barrier tray (split type) with respect to a 3rd electrical component unit. FIG. 3B is a partially enlarged perspective view showing a mounting portion of the main tray; FIG. 3B is a partially enlarged perspective view showing a state in which the engaging portion of the subtray is hooked to a handle; The side view which shows the said barrier tray (split type) attached to the 3rd electrical component unit.

Next, some embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

An outdoor unit of an air conditioner according to the present invention is installed outdoors and connected to one or more indoor units installed in an air-conditioned room via refrigerant pipes.

First, referring to FIGS. 1 and 2, an outdoor unit 1 (hereinafter simply referred to as outdoor unit 1) of an air conditioner according to this embodiment has a substantially rectangular parallelepiped housing 11. As shown in FIG. In the rectangular parallelepiped housing 11, the upper surface side is the upper surface or the upper side, the opposite side of the upper surface is the bottom surface or the lower side, the surface with the blowout port 31 described later is the front side or front side, the front side is the rear side or the rear side, and the outside air intake is described later. In the following description, the surface on which the inlet 141 is located is defined as the right side or right side, and the opposite side of the right side is defined as the left side or left side. The same applies to each component.

The outer shell of the housing 11 is mainly made of steel plate, and the front and left side surfaces of the housing 11 are covered with a front panel 30 . At two upper and lower positions on the front surface of the front panel 30, air outlets 31 are provided which are circularly opened so as to correspond to blower fans 21, which will be described later.

A bell mouth 32 formed in a trumpet shape by extending the steel plate of the front panel 30 inward is provided around the outlet 31 . The air outlet 31 is covered and protected by a fan guard 35 made of wire. In this embodiment, the left side surface of the front panel 30 is provided with a suction port 33 consisting of 5 horizontal×7 vertical rectangular holes.

The right side of the front surface and the front side of the right side surface of the housing 11 are covered with a lower piping cover 12 and an upper service panel 13 . The pipe cover 12 and the service panel 13 are detachable for connection and maintenance of refrigerant pipes and cables (not shown).

Further, the rear side of the right side surface of the housing 11 and part of the rear side are covered with a rear panel 14 . A plurality of laterally elongated outside air intakes 141 for taking outside air into the electrical component unit 5 described later are provided at the lower right side surface of the rear panel 14 .

The front panel 30, the pipe cover 12, and the rear panel 14 are assembled by screws to a bottom plate 15 having legs 151 that serve as the bottom surface of the housing 11 and support the housing 11. The front panel 30, the service panel 13, and the rear panel 14 The upper end is covered with a top plate 16 .

The top plate 16 is attached to the front panel 30, the service panel 13, and the rear panel 14 by screwing. In FIG. 1, the upper portion of the service panel 13 is cut away to show the electric component unit 5 inside.

As shown in FIG. 3, inside the housing 11, a bottom plate 15 is erected, and the right end of the front panel 30 is screwed. The lower partition plate 24 having a height up to the lower end and the electrical part partition plate 52 placed on the front side of the lower partition plate 24 separate the fan room FR on the front panel 30 side and the machine room MR on the service panel 13 side. are separated by A rear partition plate 26, which will be described later, is arranged on the rear side of the lower partition plate 24. As shown in FIG.

Propeller fan type blower fans 21 are provided at two upper and lower positions in the blower room FR. The blower fan 21 is pivotally supported by a fan motor 20 fixed to a motor support 19 supported by the bottom plate 15 .

In addition, a heat exchanger 18 having an L-shape in top view is arranged from the left side to the back in the fan room FR. The heat exchanger 18 is composed of a plurality of fins 181 arranged in parallel and heat transfer tubes 182 arranged in a meandering manner so as to intersect the fins 181 at right angles.

With reference to FIG. 2, on the back side of housing 11, heat exchanger 18 is exposed between the side edge of back panel 14 and the side edge of front panel 30. As shown in FIG. On the back side of the housing 11, a portion where the heat exchanger 18 is exposed is a back suction port 22 for taking outside air into the fan chamber FR, and the back suction port 22 is provided with a protective member 23.

Returning to FIG. 3, the machine room MR is provided with an electrical component storage section 50 in which the electrical component unit 5 is arranged in the upper portion, and an accumulator 40, a compressor 41, a four-way valve 42, and a refrigerant pipe 43 in the lower portion. A refrigerant circuit component 4 such as an expansion valve 44 is arranged.

With the above configuration, the outdoor unit 1 of the air conditioner transfers the heat of the high-temperature/high-pressure refrigerant flowing inside the heat transfer tubes 182 of the heat exchanger 18 from the heat transfer tubes 182 to the fins 181 during cooling operation, for example. , the fins 181 radiate heat to the air sucked from the suction port 33 and the rear suction port 22 by the blower fan 21, or absorb heat from the sucked air, thereby performing heat exchange.

As shown in FIG. 4 , the heat exchanger 18 includes a heat exchanger mounting plate 183 surrounding the right end of the heat exchanger 18 . The heat exchanger mounting plate 183 has a plurality of holes through which the heat transfer pipes 182 pass and are connected to other heat transfer pipes 182 and refrigerant pipes 43 . Although not shown, the heat exchanger 18 is erected by fixing the lower end of the heat exchanger mounting plate 183 to the bottom plate 15 .

The front end of the heat exchanger mounting plate 183 is bent at right angles to the heat exchanger 18 side to form a heat exchanging corner portion 185 . The lower partition plate 24 and the later-described back partition plate 26 are assembled to the heat exchanger mounting plate 183 and the heat exchange corner 185 and screwed.

Also referring to FIG. 5, the lower partition plate 24 extends along the refrigerant circuit components 4 (the accumulator 40, the compressor 41, the refrigerant pipe 43, etc.) arranged inside the machine room MR. A first partition surface 241 on the front side parallel to the side surface, a second partition surface 242 on the back side parallel to the back surface of the housing 11 and fixed to the heat exchanger mounting plate 183, the first partition surface 241 and the second partition surface 242 It has a third partition surface 243 connecting the partition surfaces 242 with an inclined surface.

The lower partition plate 24 has a lower front flange portion 244 bent toward the machine room MR at its front end. Further, the lower partition plate 24 has a receiving portion 25 bent toward the machine room MR at its upper end.

The receiving portion 25 located on the first partition surface 241 is a rail receiving portion 251 . The end of the rail receiving portion 251 on the third partition surface 243 side is provided with a stopper extension portion 251a partially extending toward the machine room MR at a position where a stopper 57 described later stops.

A rear partition plate 26 is provided above the second partition surface 242 of the lower partition plate 24 . The rear partition plate 26 has its right end bent toward the rear side and screwed to the heat exchanger mounting plate 183 . The left end of the back partition plate 26 is fixed to the electrical component partition plate 52 .

At the lower end of the back partition plate 26, fixed pieces 262 and 263 are provided which are bent so as to come into contact with the receiving portions 25 of the lower partition plate 24. As shown in FIG. Also referring to FIG. 6, an insertion claw 264 is provided on the upper left portion of the back partition plate 26 and gradually rises toward the direction of the fan chamber FR. An inwardly extending fixture 265 is provided on the upper right portion of the back partition plate 26 .

As shown in FIGS. 5 and 7, the electrical component partition plate 52 has a mounting surface 53 positioned above the first partition surface 241 of the lower partition plate 24 formed by bending a steel plate, and is perpendicular to the rear side of the mounting surface 53 . a curved corner 541, a fixing surface 54 extending from the corner 541 to the back partition plate 26 and fixed to the back partition plate 26, and a post attachment portion 521 that is bent in multiple stages from the front end of the attachment surface 53 and becomes a concave portion. , and an upper front flange portion 522 that is flush with the lower front flange portion 244 on the front surface of the post mounting portion 521 .

The electrical part partition plate 52 is further connected to a support 55 which is fixed inside the support mounting part 521 and whose right side protrudes beyond the upper front flange part 244, and the lower end corners of the mounting surface 53 and the fixing surface 54. A corner fixing plate 56 is provided that contacts the receiving portion 25 of the third partition surface 243 with a bent piece 561 that is bent downward.

A lower end of the mounting surface 53 serves as a rail surface 58 bent toward the fan chamber FR side. The rail surface 58 has a rail guide portion 581 bent downward. A stopper 57 extending downward from the rail surface 58 is provided at the lower portion of the mounting surface 53 on the machine room MR side, and the bottom surface of the support column mounting portion 521 at the front end is bent downward toward the machine room MR side. A front guide portion 523 is provided.

A lateral width W1 from the inner side of the rail guide portion 581 to the inner side of the front guide portion 523 is the same as the lateral width of the rail receiving portion 251 of the lower partition plate 24 . The lateral width W2 of the rail surface 58 is the same as the lateral width of the stopper extension 251a.

As a result, the stopper extending portion 251a is regulated between the rail guide portion 581 and the stopper 57, and the rail receiving portion 251 is regulated between the rail guide portion 581 and the front guide portion 523 to prevent rattling. .

Next, the configuration of the electrical component unit 5 will be described. As shown in FIG. 8, the basic structure of the electrical component unit 5 consists of a first electrical component unit 6 including electrical components attached to an electrical part partition plate 52, and one end supported by the front end of the first electrical component unit 6. a second electrical component unit 7 arranged on the service panel 13 side and orthogonal to the first electrical component unit 6; It is formed by a third electrical component unit 8 that is arranged in a row.

Three surfaces of the first electrical component unit 6, the second electrical component unit 7, and the third electrical component unit 8 are assembled so as to intersect substantially at right angles, so that a rectangular parallelepiped shape is provided inside the electrical component unit 5 shown in FIG. space is formed.

This space serves as a pipe accommodating portion 45, and part of the refrigerant circuit components 4 arranged in the machine room MR shown in FIGS. can be accommodated. As a result, the height of the housing 11 can be made low, and the outdoor unit 1 can be made compact.

As shown in FIG. 9, the framework of the electrical component unit 5 includes the aforementioned electrical component partition plate 52 of the first electrical component unit 6, the substrate fixing plate 71 of the second electrical component unit 7, and the third electrical component unit 8. is formed by a support frame 81 of

As shown in FIGS. 4, 8, and 10, electrical parts can be provided on both sides of the electrical part partition plate 52 of the first electrical component unit 6 and the board fixing plate 71 of the second electrical component unit 7, respectively. is.

13 and 14, a board fixing assembly 84 including a top board (circuit board) 82 is detachably attached to the support frame 81 of the third electrical component unit 8. Electrical components can be provided on the top substrate 82 . As a result, it becomes possible to sufficiently arrange a large-sized substrate and power supply components accompanying the increase in capacity.

The support frame 81 of the third electrical component unit 8 is formed of a steel plate and has a U-shaped cross section provided with reinforcing portions 817 and 818 bent inward on the top and bottom of the support frame 81, as shown in FIG. In addition, it is bridged over both front and rear upper ends of the electrical part partition plate 52 .

The support frame 81 includes a rear arm portion 811 screwed to the upper end of the fixing surface 54 of the electrical component partition plate 52 , a right arm portion 812 bent at right angles from the rear arm portion 811 , and a right arm portion 812 bent at right angles from the right arm portion 812 . A front arm portion 813 which is partially inclined forward and is screwed to the upper end of the upper front flange portion 522 is provided.

The rear arm portion 811 has an insertion claw hole 811 a at a position facing the insertion claw 264 of the back partition plate 26 , and a rear mounting fixture 814 bent to the rear side at a position facing the fixture 265 . It is The rear fixture 814 has two engagement holes 811b on the left and right.

Also, on the front portion of the right arm portion 812, there is a right fixture 815 bent to the right. The forearm portion 813 has a crank-like front attachment 816 that bends along the bottom surface of the forearm portion 813 from the front surface and then bends downward. A portion of the front fixture 816 further bends forward to form a hooking claw 816a.

Also referring to FIG. 7, the support 55 described above has a height from the lower end of the electrical part partition plate 52 to the bottom of the support frame 81, and two upper and lower hinges are provided on the front side of the support 55. A slit 551 is provided. The hinge slit 551 has an upwardly elongated groove 552 at its left upper end and a downwardly elongated groove 553 at its right lower end.

The substrate fixing plate 71 is formed of a steel plate. It has an inclined surface 712 that is inclined forward left.

At the left end of the inclined surface 712, there is a hinge surface 713 parallel to the front surface, and two hinge pieces 714 protrude leftward from the end of the hinge surface 713 at positions facing the hinge slits 551 of the post 55. is provided as follows.

The substrate fixing plate 71 has an opening 73 cut from the hinge surface 713 to the inclined surface 712 . The opening 73 has a height approximately half the height of the substrate fixing plate 71 and is opened widely at the vertical center of the substrate fixing plate 71 .

The inclined surface 712 is provided with hole-shaped connector relay portions 74 at two upper and lower positions in the vicinity of the opening 73 . A relay connector 741 is fitted to the connector relay portion 74 .

Further, the mounting surface 710 of the substrate fixing plate 71 and the right end of the terminal block mounting surface 711 are bent rearward and further to the right to form a flange portion 716 fixed to the back panel 14 . In addition, a locking hole 715 is provided at the upper end of the mounting surface 710 .

By inserting the hinge piece 714 into the groove 552 of the hinge slit 551 of the post 55 from the front and moving the mounting surface 710 rearward, the board mounting plate 71 is fitted with the groove 553 of the hinge slit 551 . match. As a result, the second electrical component unit 7 is supported by the column 55 of the first electrical component unit 6 so as to be openable and closable.

Next, the hooking claw 816a of the front mounting member 816 of the support frame 81 is hooked to the locking hole 715 at the upper end of the mounting surface 710, and the screw hole beside the locking hole 715 and the screw hole of the front mounting member 816 are screwed. Thus, the framework of the electrical component unit 5 is assembled.

Various electrical components such as heat sinks 631, 632, and 633, an inverter board 611, and an electrolytic capacitor 821, which will be described later, are attached to the electrical component unit 5, and the electrical component unit 5 itself is formed of a steel plate. It weighs about 15kg.

In order to easily place it on the lower partition plate 24, first, the electrical component unit 5 is raised to the height of the lower partition plate 24 as shown in FIG. Next, position the rail receiving portion 251 of the lower partition plate 24 between the rail guide portion 581 of the electrical component partition plate 52 and the stopper 57 so as to sandwich the rail surface 58 on the rail receiving portion 251 . put it on

Then, the electrical component unit 5 is slid rearward. If the corner fixing plate 56 is moved as it is, the bent piece 561 of the corner fixing plate 56 comes into contact with the receiving portion 25 of the third partition surface 243 and stops. At this time, the stopper extending portion 251 a of the lower partition plate 24 is restricted between the rail guide portion 581 and the stopper 57 , and the front of the rail receiving portion 251 is restricted between the rail guide portion 581 and the front guide portion 523 . By doing so, the electrical component unit 5 is temporarily fixed while preventing lateral displacement.

As the electrical component unit 5 moves, the insertion claws 264 of the back partition plate 26 are fitted into the insertion claw holes 811a of the support frame 81, so that the upper end of the electrical component unit 5 is also temporarily fixed.

The temporarily fixed electrical component unit 5 is screwed to the rear fixture 814 of the support frame 81 and the fixture 265 of the back partition plate 26 . The electrical component unit 5 is fixed to the machine room MR by screwing the right fixture 815 of the support frame 81 and the flange 716 of the board mounting plate 71 to the rear panel 14 .

As shown in FIGS. 7, 8, and 10 to 12, each electrical component is attached to the first electrical component unit 6 via a mounting base 61 made of steel plate on the mounting surface 53 of the electrical component partition plate 52. . According to this embodiment, an inverter board 611 is arranged behind the mounting base 61 (on the right side of the mounting base 61 in FIG. 8), and two fan motor drives are arranged in front of the mounting base 61 (on the left side of the mounting base 61 in FIG. 8). Boards 62 are arranged one above the other, and a diode bridge 614 is placed on the fan motor drive board 62 . All of them are substrates and heat-generating parts on which heat-generating elements are mounted.

Therefore, in order to cool these electrical parts, the electrical part partition plate 52 and the mounting base 61 have mounting holes 531 and 616 corresponding to the inverter board 611, the fan motor drive board 62 and the diode bridge 614, respectively. Heat sinks 631, 632, and 633 are provided on the blower chamber FR side of the partition plate 52 to cover the attachment hole 531 and cool the inverter board 611, the fan motor drive board 62, and the diode bridge 614, respectively.

The heat sinks 631, 632, and 633 have a plurality of heat radiation fins 63a arranged vertically, and a ventilation passage 632 is formed so that air K1, which will be described later, flows horizontally.

A reactor 613, which is a heat-generating component, is provided on the inverter board 611. The reactor 613 is covered with a U-shaped duct 651 that is open on the front side and the back side. The mounting base 61 has a vent hole 532 in alignment with the reactor 613 . On the blower chamber FR side of the electrical part partition plate 52, a water impermeable lid 64 having a plurality of horizontally long slit-shaped ventilation holes 641 with a canopy provided on the upper part covering the ventilation port 532 is provided.

The mounting surface 53 of the electrical component partition plate 52 is provided with an air intake port 59 between a corner portion 541 (back side of the electrical component partition plate) with the fixing surface 54 and one end side of the heat sink 631 . The air intake port 59 consists of a plurality of vertically long slit-shaped ventilation holes 591 inclined toward the machine room MR side toward the rear side by press working. there is

The mounting base 61 is provided with a ventilation guide portion 617 that protrudes toward the machine room MR around the air intake port 59 and guides the air K1 to the air intake port 59 . An opening in the ventilation guide portion 617 serves as an air inlet 615 .

The air intake port 59 is positioned adjacent to the heat sink 631 on the fan chamber FR side and has the same height as the heat sink 631 . The air intake port 59 and the heat sink 631 are surrounded by an air guide cover 652 . The air guide cover 652 has an air guide surface 653 inclined on the side of the air intake port 59 and has an air outlet 654 in front of the heat sink 631 .

Next, the air flow inside the electrical component unit 5 will be described. The air drawn by the blower fan 21 and flowed in from the outside air intake 141 of the rear panel 14 rises in the machine room MR, cools the electrical components in the electrical component unit 5, and reaches the waterproof cover 64 through the duct 651. It becomes the air K2 that flows from the ventilation hole 641 directly toward the blower fan 21 into the blower chamber FR.

Air K1, which is part of the air, enters the air inlet 615 of the mounting base 61, flows along the ventilation guide portion 617 protruding from the mounting base 61, and flows from the air inlet 59 into the wind guide cover 652. The air passes through the ventilation path 63b of the heat sink 631 along the air guide surface 653 of the air guide cover 652, cools the heat sink 631, and reaches the air outlet 654 to the fan chamber FR.

By providing the air guide cover 652 for directing the air before heat exchange to the heat sink 631, the board and the heat generating components mounted with the heat generating elements mounted with the heat sink 631 can be efficiently cooled. In addition, a triple waterproof structure is formed by the wind guide cover 652, the vertically long slit-shaped ventilation hole 591 inclined toward the machine room MR side, and the ventilation guide portion 617 that partially covers the air intake port 59. Intrusion of water from the blower FR chamber can be reliably prevented.

In addition, the air K2 that cools the electrical components in the electrical component unit 5 and flows into the fan chamber FR from the waterproof lid 64 directly toward the blower fan 21 and the air K2 that flows through the wind guide cover 652 and cools the heat sink 631 cools the fan chamber FR. The outflow direction is different from that of the air K1 flowing in front of the FR, so that the electric components can be efficiently cooled without affecting each other, and the heat dissipation efficiency can be improved.

As described above, the first electrical component unit 6 includes two fan motor drive boards 62 arranged vertically in front of the mount 61 (closer to the service panel 13). Each fan motor drive board 62 is provided with a first connector 621 and a second connector 622 . The first connector 621 is connected with the first cable 46 that drives the fan motor 20 , and the second connector 622 is connected with the second cable 47 that is the signal line of the fan motor 20 .

The first connector 621 is arranged in front of the fan motor drive board 62 (near the service panel 13 side), and as shown in FIGS. visible.

Referring to FIG. 3, first cable 46 and second cable 47 connected to fan motor 20 enter machine room MR from outlet 245 in first partition surface 241 of lower partition plate 24 . A connector 461 is provided at the tip of the first cable 46 , and this connector 461 can be directly inserted into the first connector 621 of the fan motor drive board 62 through the opening 73 .

The second connector 622 is connected to a relay connector 741 provided on the connector relay portion 74 on the inclined surface 712 , and the second connector 622 is connected by connecting the second cable 47 to the relay connector 741 of the connector relay portion 74 . 622 can be connected.

As a result, connection and maintenance of the first cable 46 and the second cable 47 can be performed without opening the second electrical component unit 7 of the electrical component unit 5, thereby improving workability.

As shown in FIG. 13, the third electrical component unit 8 has a top substrate 82 fixed to a substrate fixture 83 to form a substrate fixing assembly 84 shown in FIG. Mounted from.

The top substrate 82 has an electrolytic capacitor 821 and other electrical components on the bottom surface of a substrate made of a rectangular plate material. The substrate fixture 83 is made of a resin material and has a rectangular fixing frame 831 surrounding the top substrate 82 . The fixed frame 831 supports the top substrate 82 with a substrate supporting portion 832 provided in a rim shape at the inner lower portion of the fixed frame 831 .

Furthermore, the fixed frame 831 has three protruding pieces 833 protruding from the inside upper part of the right long side, three places protruding from the inside of the left long side of the fixed frame 831, and one place from the inside of the front short side. A locking pawl 834 is provided. The board support portion 832 is notched at a portion where the protruding piece 833 and the locking claw 834 are located.

The distance from the upper surface of the substrate supporting portion 832 to the lower ends of the protruding pieces 833 and the locking claws 834 is substantially the same as the thickness of the plate of the top substrate 82 . Two beams 835 are provided below the substrate fixture 83 to reinforce the fixing frame 831 so that it does not come into contact with the electrolytic capacitor 821 . Note that the projecting piece 833 may be used as the locking claw 834 .

As shown in FIG. 13, the top substrate 82 is inserted into the substrate fixture 83 from above, and after the right long side is fitted between the substrate support portion 832 and the protruding piece 833, the top substrate 82 is secured to the locking claws 834. It is fixed by fitting so that it is located under the

Also referring to FIG. 8, the substrate fixture 83 has two engaging claws 836, 836 protruding to the rear side outside a fixing frame 831 located on one short side (back side) of the top substrate . is provided.

Further, as shown in FIG. 13, the substrate fixture 83 is provided with two mounting pieces 838, 838 protruding outside the fixing frame 831 located on the other short side (front side) of the top substrate 82. there is

The attachment piece 838 has a claw portion 838 a that rests on the reinforcing portion 818 of the support frame 81 when assembled with the support frame 81 . Furthermore, between the mounting pieces 838 , 838 is provided a screw piece 837 positioned below the support frame 81 when assembled with the support frame 81 .

The board fixture 83 that has become the board fixing group 84 is aligned with the support frame 81 from below, and the two engaging claws 836 on the rear side are fitted into the engaging holes 811b of the support frame 81 . There is some play between the engaging claw 836 and the engaging hole 811b. It sits on top of part 818 . It is now temporarily fixed.

At this time, since the engaging claw 836 and the claw portion 838a of the mounting piece 838 are supported by the support frame 81, there is no fear of falling. Finally, the board fixing assembly 84 is fixed to the support frame 81 by aligning the screw pieces 837 and the screw holes of the support frame 81 and screwing them from below.

When removing the board fixing assembly 84 for maintenance, conversely, the screw is removed and the board fixture 83 is slightly pushed backward to pull the front mounting piece 838 side downward, and the claw portion 838a of the mounting piece 838 is pulled downward from the support frame 81. It can be easily removed by removing it from the reinforcing portion 818 and finally pulling out the engaging claw 836 from the engaging hole 811b.

The assembled third electrical component unit 8 is covered with an insulating sheet 85 as shown in FIG. Also, the substrate fixing assembly 84 is attached to the right side of the support frame 81 , so that a gap 86 is provided between the substrate fixing assembly 84 and the electrical component partition plate 52 .

The duct 651 of the first electrical component unit 6 described above is arranged in this gap 86 . By arranging the board fixing assembly 84 and the duct 651 side by side in this manner, the height of the electrical component unit 5 can be further reduced, and the height of the housing 11 can be further reduced.

As described above, the substrate fixing assembly is provided with the U-shaped support frame 81 bridged by the electrical part partition plate 53, and the top substrate 82 and the substrate fixture 83 supporting the top substrate 82 are integrated with the support frame 81. By attaching 84 , it becomes possible to provide an electrical component (electrolytic capacitor 821 ) in the upper part of housing 11 .

Further, by providing the substrate fixing assembly 84 on the upper portion of the housing 11, the height of the housing 11 can be reduced. Also, the substrate fixing assembly 84 is attached to the right side of the support frame 81 so that a gap 86 is provided between the substrate fixing assembly 84 and the electrical component partition plate 52 .

A duct 651 of the first electrical component unit 6 is arranged in this gap 86 . By arranging the board fixing assembly 84 and the duct 651 side by side, the height of the electrical component unit 5 can be further reduced, and the height of the housing 11 can be further reduced. Furthermore, since the substrate fixing assembly 84 is detachable, the top substrate 82 can be removed from below, which improves the workability of maintenance.

By the way, in the above embodiment, the first electrical component unit 6 is attached to the electrical part partition plate 52, but as shown in FIG. ), and the inverter board 611 is arranged on the rear end side (back side) of the electrical part partition plate 52 when viewed from the second electrical component unit 7 on the service panel 13 side.

During maintenance of the electrical component unit 5, the service panel 13 is removed, the second electrical component unit 7 is opened toward the outside of the housing 11 (the front side of the paper surface of FIG. 1), and the inside of the electrical component unit 5 is inspected. However, since the inverter board 611 is arranged in a deep place on the rear end side of the electrical part partition plate 52, the visibility of the inverter board 611 is poor. When removing using a tool, the workability is difficult.

Therefore, another embodiment for improving this point will be described with reference to FIGS. is used.

In this alternative embodiment, the electrical component partition plate 52 includes a first electrical component partition plate 52a on the front end side when viewed from the second electrical component unit 7 on the service panel 13 side, and a second electrical component partition plate on the rear end side. The second electrical component part partition plate 52b on the rear end side is bent at a predetermined angle with respect to the first electrical component part partition plate 52a on the front end side. With reference to FIG. 16(b), the bending angle θ of the second electrical component part partition plate 52b with respect to the first electrical component part partition plate 52a is calculated by It is the angle measured clockwise from the reference plane.

That is, the first electrical component part partition plate 52a on the front end side is substantially parallel to the side surface of the housing 11 (the right side surface in FIG. 1), but the second electrical component part partition plate 52b on the rear end side is parallel to the side surface of the housing 11 ( 1, the first electrical component part partition plate 52a and the second electrical component part partition plate 52b have a dogleg shape in plan view.

In this example, the bending angle θ of the second electrical component part partition plate 52b with respect to the first electrical component part partition plate 52a is set to 40 degrees in order to improve the visibility and workability of the inverter board 611. The same effect can be obtained within the range of degrees.

5, the lower partition plate 24 has a first partition surface 241 on the front side parallel to the side surface of the housing 11 and a heat exchanger mounting plate 183 parallel to the rear surface of the housing 11 on the rear side. and a third partition surface 243 connecting the first partition surface 241 and the second partition surface 242 with an inclined surface. It is preferable that the first partition surface 241 and the second electrical part partition plate 52 b are substantially flush with the third partition surface 243 .

In this way, by tilting the second electrical component partition plate 52b on the rear end side toward the side surface (the right side surface in FIG. 1) of the housing 11, the inverter board 611 arranged on the second electrical component partition plate 52b The visibility of the parts is improved, and maintenance can be performed with good workability, such as being able to easily approach the parts without worrying about other peripheral parts.

As in the previous embodiment, the fan motor drive board 62 is arranged on the first electrical part partition plate 52a side, but the present invention is not limited to this board arrangement. The inverter board 611 may be arranged on the partition plate 52a side, and the fan motor drive board 62 may be arranged on the second electrical part partition plate 52b side.

As described above, the electrical component unit 5 is equipped with various electrical components such as the heat sinks 631, 632, 633, the inverter board 611, and the electrolytic capacitor 821. The frame of the electrical component unit 5 is made of steel plate. The weight is about 15 kg because it is made of Therefore, it is not easy to lift and transport the electrical component unit 5 .

Therefore, in order to facilitate carrying of the electrical component unit 5, as a preferred embodiment of the present invention, as shown in FIGS. A handle 510 is provided. The handle 510 may have a general shape consisting of a band plate having screwing pieces 512, 512 facing outward at both ends of a U-shaped grip portion 511, and may be made of either sheet metal or synthetic resin. There may be.

In FIG. 15, the handle 510 is arranged in a vacant upper right portion of the electrical part partition plate 52, which is obliquely upper right of the inverter board 611 in this example, above the air intake port 59. As shown in FIG. Handle 510 may be mounted vertically or horizontally, but is preferably tilted about 45 degrees. The direction of inclination may be upward to the right (downward to the left) or downward to the right (upward to the left).

According to this, as shown in FIG. 17, by gripping the handle 510 with one hand and supporting the lower portion of the heat sink 631 (see FIG. 10) with the other hand, the heavy electrical component unit 5 can be held. can be carried around.

In this example, the handle 510 is provided on the side of the second electrical component partition plate 52b of the electrical component partition plate 52. A flat plate having no bent portion may be used.

Next, referring to FIG. 5, in the previous embodiment, when the electrical component unit 5 is placed on the lower partition plate 24, the lower end of the electrical component partition plate 52 is used as the rail surface 58, and the lower partition plate 24 is A rail receiving portion 251 for the rail surface 58 is formed on the upper end of the first partition surface 241 , and the electrical component unit 5 is moved along the rail receiving portion 251 so as to be placed on the lower partition plate 24 . However, since the width of the rail receiving portion 251 is narrow, there is a problem with stability during movement.

To solve this problem, as shown in FIG. 18, a receiving plate 270 is provided at the upper end of the lower partition plate 24 so that the electrical component unit 5 can be stably moved to its fixed position.

As described above, the lower partition plate 24 is fixed to the first partition surface 241 on the front side parallel to the side surface of the housing 11 and the heat exchanger mounting plate 183 parallel to the rear surface of the housing 11. It has a second partition surface 242 and a third partition surface 243 connecting between the first partition surface 241 and the second partition surface 242 .

The receiving plate 270 has the first partitioning surface 241, the third partitioning surface 243 and the second partitioning surface 241, the third partitioning surface 243 and the second partitioning surface 241. 242, and a first flange 271 is formed on the oblique side thereof so as to be bent upward.

In the embodiment here, the electrical component unit 5 has the electrical component part partition plate 52, as described with reference to FIG. 52b, and the second electrical component partition plate 52b is bent at a predetermined angle with respect to the first electrical component partition plate 52a. A second flange 52c is provided which is bent and erected toward the blower chamber FR side.

According to this, as shown in FIG. 19A, the electrical component unit 5 is lifted, placed on the receiving plate 270 at the rear end of the second electrical component partition plate 52b, and moved along the first flange 271 in the direction of the arrow A. 19(b), the electrical component unit 5 can be stably guided to the fixed position shown in FIG. 19(b).

As described above, the second electrical component unit 7 is supported by the support column 55 of the first electrical component unit 6 so as to be openable and closable. (on the front side of the paper) can be opened up to, for example, about 90°.

Referring to FIG. 16 again, a predetermined electrical wiring W (three-phase power line in this example) is laid between the first electrical component unit 6 and the second electrical component unit 7 . As the air-conditioning capacity is improved, the drive current value of the compressor and the like is also increased. If the wiring becomes thicker, it becomes difficult to route it, and this also hinders the opening and closing of the second electrical component unit 7 .

Therefore, the power line W is set to a sufficient length longer than the length required when the second electrical component unit 7 is opened to the maximum, and the surplus length of the power line W is set above the board fixing plate 71 of the second electrical component unit 7. A wiring storage section 75 for storing the wiring is provided.

Also referring to FIG. 20, the wiring housing portion 75 is formed in a substantially box-like shape so as to protrude toward the service panel 13 side. The wiring housing portion 75 may be formed integrally with the substrate fixing plate 71, or may be formed separately and attached to the substrate fixing plate 71 by screws, welding, or the like.

Preferably, as shown in FIG. 16, a wire hanger 752 is provided in the wire housing portion 75, and the surplus length of the power wire W is looped and passed through the wire hanger 752 a plurality of times to be held. In this example, the wire hanger 752 is an annular body, but a hook-shaped hanger can also be used.

According to this, even if the power wire W has a large wire diameter, it can be routed compactly and easily between the first electrical component unit 6 and the second electrical component unit 7 . The electric wiring W may be a signal line and is not limited to a power line.

Next, the improved heat dissipation path of the second electrical component unit 7 will be described with reference to FIGS. 20 and 21. FIG. 20 and 21 are perspective views of the electrical component unit 5 viewed from below the service panel 13 side.

On both sides of the substrate fixing plate 71 of the second electrical component unit 7, many components for air conditioning control are mounted, and the heat-generating components included therein are mounted on the front surface of the substrate fixing plate 71 (the surface on the service panel 13 side). ) side, part of the air taken into the electrical component unit 5 from the outside air intake port 141 (see FIG. 1) of the rear panel 14 is made to flow easily to the front side of the substrate fixing plate 71 as well. There is a need to cool heat-generating components more effectively.

As described above, the upper portion of the electrical component partition plate 52 (second electrical component partition plate 52b) of the first electrical component unit 6 is provided with a ventilation port 532 for discharging cooling air from the reactor 613 to the fan chamber FR side. is formed.

Using this air vent 532 as a first air vent, a second air vent is provided above the board fixing plate 71 of the second electrical component unit 7 to improve the air flow on the front side of the board fixing plate 71 . The second vent may be a simple opening in the board fixing plate 71 , but in this embodiment, the second vent 751 is provided at the bottom of the wiring housing portion 75 .

As a result, as indicated by an arrow B in FIG. 21, a heat radiation path is formed to improve the flow of cooling air from the front surface of the substrate fixing plate 71 to the first ventilation port 532 through the second ventilation port 751, thereby fixing the substrate. Heat-generating components provided on the front side of the plate 71 can be cooled more effectively.

When the second electrical component unit 7 is incorporated into the electrical component unit 5 , the hinge piece 714 of the second electrical component unit 7 is engaged with the hinge slit 551 provided in the post 55 of the first electrical component unit 6 . However, in that case, the second vent 751 can be used as a handle for carrying the second electrical component unit 7 .

By the way, in this embodiment, the third electrical component unit 8 arranged along the upper surface of the housing 11 is equipped with a rectifying circuit for preventing inrush current. An electrolytic capacitor 821 and a cement resistor 822 are mounted on the bottom surface of the substrate 82 . The third electrical component unit 8 corresponds to the specific electrical component unit described in claim 1 .

The electrolytic capacitor 821 is an electrical component that generates a large amount of flammable heat energy and is filled with a flammable electrolytic solution. Although the cement resistor 822 generates a small amount of heat energy, it is one of the heat-generating electric parts that can become an ignition source together with the electrolytic capacitor 821 .

When the electrolytic capacitor 821 catches fire, the electrolytic solution, which is a combustible substance, scatters around. In addition, when the cement resistor 822 catches fire, the sparks and cinders may scatter, and the fire may spread to the surrounding heat insulating material, sound absorbing material, and the like, causing the fire to spread. In addition, mounted components may drop due to burning of the board.

Therefore, in the present embodiment, the barrier tray 9 is arranged below the third electrical component unit 8 to prevent leaked substances from falling or scattering around when the exothermic electrical components (the electrolytic capacitor 821 and the cement resistor 822) are ignited. I try not to.

The barrier tray 9 is provided with areas corresponding to the magnitude of the heat energy generated by the heat-generating electrical components. Specifically, it has a first region 9a corresponding to the electrolytic capacitor 821 with high heat energy and a second region 9b corresponding to the cement resistor 822 with low heat energy.

In the first region 9a, a clearance (minimum distance between the first region 9a and the electrolytic capacitor 821) of at least 25 mm is required with respect to the electrolytic capacitor 821 of the ignition source. In addition, the second region 9b requires a clearance (minimum distance between the second region 9b and the cement resistor 822) of at least 15 mm, for example, from the cement resistor 822 of the ignition source. These minimum distances are also the distances between the first area 9a or the second area 9b and the third electrical component unit (specific electrical component unit).

In this way, since there is a height difference between the first region 9a and the second region 9b, in this embodiment, an inclined surface 9c that slopes downward from the second region 9b to the first region 9a is formed to facilitate ignition. Combustibles (electrolyte, spark, embers, etc.) scattered from the source (electrolytic capacitor 821 and cement resistor 822) are collected in the first region 9a with a large clearance. According to this, the combustibles are collected at a position away from the ignition source where the heat energy is large, and the combustion of the combustibles can be suppressed.

In the present invention, the barrier tray 9 includes an integrated barrier tray 910 shown in FIG. 23 and a divided barrier tray 930 shown in FIG.

With reference to the perspective view of FIG. 23, the plan view of FIG. 24(a), and the bottom view of FIG. It has a large area and is entirely made of a non-twisting synthetic resin.

A front end portion (end portion on the service panel 13 side) 910a of the barrier tray 910 is integrally formed with a tongue-shaped screwing portion 911 for the substrate fixture 83 (see FIG. 14) of the third electrical component unit 8. there is

In addition, a handle 510 (see FIGS. 15 to 17) for carrying the electrical component unit is provided at the rear end portion 910b of the barrier tray 910 (the end portion opposite to the front end portion 910a on the far side of the electrical component storage portion 50). An engaging portion 912 is provided for. In this embodiment, the engaging portion 912 is formed in a U-shape that hooks onto the handle 510 .

To attach the barrier tray 910 to the third electrical component unit 8, the engaging portion 912 of the rear end portion 910b is hooked on the handle 510, and the screwing portion 911 of the front end portion 910a is screwed to the substrate fixture 83. .

In order to remove the barrier tray 910 from the third electrical component unit 8 , it is sufficient to remove the screwing portion 911 from the substrate fixture 83 and remove the engaging portion 912 of the rear end portion 910 b from the handle 510 .

As shown in FIGS. 24(a) and 24(b), the electrolytic capacitor 921 in particular is air-cooled at a predetermined portion of the barrier tray 9 (910) excluding the portion immediately below the exothermic electrical components (the electrolytic capacitor 821 and the cement resistor 822). A ventilation hole (ventilation portion) 913 is provided for this purpose.

In the case of the integrated barrier tray 910, because of its size, it is difficult to attach it to the bottom side of the third electrical component unit 8 inside the electrical component unit 5 after assembly. Next, a modification of the barrier tray (divided barrier tray 930) will be described with reference to FIGS. 25 to 28. FIG.

The split-type barrier tray 930 can also be used for the electrical component unit 5 assembled from the first electrical component unit 6, the second electrical component unit 7, and the third electrical component unit 8 (see, for example, FIG. 20). A main tray 940 is arranged on the front side (service panel 13 side) of the electrical component storage section 50 and a main tray 940 is arranged on the back side (back side) of the electrical component storage section 50 so that it can be attached to the component unit 8 . It consists of two members, a sub-tray 950 connected to the main tray 940 .

A front end portion 940a of the main tray 940 is integrally formed with a tongue-like screwing portion 911 for the board fixture 83 of the third electrical component unit 8, similarly to the front end portion 910a of the integrated barrier tray 910. A rear end portion 950b of the sub-tray 950 is provided with an engaging portion 912 for a handle 510 for carrying the electrical component unit, like the rear end portion 910b of the integrated barrier tray 910. FIG.

Of these, the sub-tray 950 in particular has an appropriate size selected according to the model of the outdoor unit and is connected to the main tray 940 . Therefore, a fitting means 960 is provided at the connecting portion between the main tray 940 and the sub-tray 950 (between the rear end portion 940b of the main tray 940 and the front end portion 950a of the sub-tray 950).

According to this example, the male member 961 of the fitting means 960 is provided on the rear end portion 940b side of the main tray 940, and the female member 962 of the fitting means 960 is provided on the front end portion 950a side of the sub-tray 950. ing.

The fitting means 960 fits the male member 961 and the female member 962 by sliding the sub-tray 950 with respect to the main tray 940 in the lateral direction (direction perpendicular to the front-rear direction of the barrier tray 9).

Also referring to FIG. 27, a support plate 963 protrudes from the rear end portion 940b of the main tray 940 along the longitudinal direction of the barrier tray 9. is formed perpendicular to its plate surface.

According to this embodiment, the male member 961 is formed in a U shape including a pair of left and right rib walls 961a, 961a in order to increase the structural strength and obtain a strong connection. .

In addition, forward tapered inclined surfaces 961b, 961b that slope downward toward the female member 962 are formed at the upper ends of the rib walls 961a, 961a in order to facilitate fitting to the female member 962. As shown in FIG. In contrast, the female member 962 is a hole into which the male member 961 is fitted.

As shown in FIGS. 25 and 26, the subtray 950 is ultimately screwed to the main tray 940, but the male member 961 and female member 962 are not properly mated unless the set screw 972 is attached to the main tray. Their shape is defined so that they cannot be screwed into the female screw hole 971 provided in the tray 940 .

Referring to FIGS. 26 and 28, sub-tray 950 has an overlapping piece (overlapping piece) 980 that slips into a portion of bottom surface 940c of main tray 940 when connected to main tray 940 (during assembly).

According to this, even when the barrier tray 9 is divided into the main tray 940 and the sub-tray 950 to be assembled as a split-type barrier tray 930, the fire prevention structure against ignition sources can be maintained.

Here, how to attach the split-type barrier tray 930 to the third electrical component unit 8 will be described with reference to FIGS. 29 to 31. FIG.

First, as shown in FIG. 29, the main tray 940 is attached to the lower surface of the third electrical component unit 8 on the front side of the service panel 13 side. As shown in FIG. 30(a), this attachment is accomplished by screwing the screwing portion 911 at the front end portion 940a of the main tray 940 to the board fixture 83 (see FIG. 13) of the third electrical component unit 8. done.

Next, referring to FIGS. 26 and 29, the sub-tray 950 is pushed in from the side of the electrical component unit 5 with its front end 950a aligned with the rear end 940b of the main tray 940. The member 961 and the female member 962 are fitted and connected to the main tray 940, and as shown in FIG. It is hooked on the handle 510 .

Finally, as shown in FIG. 26, the set screw 972 is screwed into the female screw hole 971 provided in the main tray 940 to integrate the main tray 940 and the sub-tray 950 together. FIG. 31 shows a split-type barrier tray 930 attached to the third electrical component unit 8 in this way.

This split-type barrier tray 930 can be easily attached to the assembled electrical component unit 5 as well. It is also possible to attach the main tray 940 to the bottom side of the top substrate 82 of the third electrical component unit 8 before assembly, and connect the sub-tray 950 to the main tray 940 after the electrical component unit 5 is assembled.

Also, if the barrier tray 9 becomes a hindrance to maintenance of electrical equipment, for example, only the subtray 950 can be removed, or both the main tray 940 and the subtray 950 can be removed.

Thus, according to the present invention, by disposing the barrier tray 9 below the third electrical component unit (the specific electrical component unit having an ignition source), it is possible to prevent the scattering of leaked substances due to the ignition of exothermic electrical components. can do. In addition, since the barrier tray 9 can be assembled by dividing it into the main tray 940 and the sub-tray 950, the barrier tray 9 can be easily attached to the assembled electrical component unit 5 as well.

1: outdoor unit, 11: housing, 12: pipe cover, 13: service panel, 14: rear panel, 141: outside air intake, 15: bottom plate, 16: top plate, 18: heat exchanger,
20: Motor, 21: Blower fan, 24: Lower partition plate, 25: Receiving part, 351: Rail receiving part, 251a: Extension part for stopper, 26: Back partition plate, 264: Insertion claw, 270: Receiving plate , 271: first flange,
30: Front panel 4: Refrigerant circuit component, 40: Accumulator, 43: Refrigerant piping, 45: Piping housing, 46: First cable, 47: Second cable,
5: Electrical component unit, 50: Electrical component housing, 510: Handle, 52: Electrical component partition, 53: Mounting surface, 54: Fixed surface, 541: Corner, 55: Post, 551: Hinge slit, 56 : corner fixing plate, 57: stopper, 58: rail surface, 581: rail guide portion, 59: air intake, 591: ventilation hole,
6: First electrical component unit, 61: Mounting base, 611: Inverter board, 62: Fan motor drive board, 621: First connector, 622: Second connector, 631: Heat sink, 64: Waterproof lid, 651: Duct , 652: wind guide cover,
7: second electrical component unit, 71: substrate fixing plate, 73: opening, 74: connector relay portion, 741: relay connector, 75: wiring housing portion,
8: Third electrical component unit, 81: Support frame, 82: Top board, 83: Board fixture, 84: Board fixing set, 85: Insulating sheet, 86: Gap 9: Barrier tray, 9a: First area, 9b 910: integrated barrier tray; 911: screwed portion; Tray 950: Sub-tray 960: Fitting means MR: Machine room FR: Fan room

Claims (2)

The interior of the housing is partitioned into a fan room and a machine room having an electrical component storage section, and the electrical component storage section contains a specific electrical component unit in which a heat-generating electrical component is mounted on a circuit board. an outdoor unit of an air conditioner having an electrical component unit, and a barrier tray for receiving falling objects from the exothermic electrical component is arranged below the specific electrical component unit ,
The heat-generating electrical components include a strong heat-generating electrical component with high heat-generating energy and a weak heat-generating electrical component with low heat-generating energy. 1 region and a second region corresponding to the weakly heat-generating electrical component, wherein the distance between the first region and the specific electrical component unit is greater than the distance between the second region and the specific electrical component unit 1. An outdoor unit for an air conditioner, wherein an inclined surface is formed for guiding said falling object from said second area to said first area. 2. The outdoor unit of an air conditioner according to claim 1, wherein ventilation holes are provided in predetermined portions of the barrier tray except for areas immediately below the heat-generating electrical parts.

Images