JP2018189266A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor unit for air conditioner including an electric component unit which facilitates cable connection.SOLUTION: An electric component unit 5 includes a first electric component unit 6 including a substrate 62 mounted on an electric part partition plate 52, and a second electric component unit 7 in which electric components are mounted on a substrate fixing plate in which one end is supported at a front end of the first electric component unit. The substrate fixing plate has an opening 73 on the first electric component unit side, and a cable 46 for connecting with the substrate can be inserted from the opening and easily connected to the substrate.SELECTED DRAWING: Figure 4

Description

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

  There is known a multi-room type air conditioner in which one outdoor unit installed outdoors and at least one indoor unit installed in an air-conditioned room are connected via a refrigerant pipe to form a refrigeration cycle. Yes. Inside the outdoor unit, a machine room equipped with a compressor, accumulator, piping, etc., a heat exchanger, a blower fan, etc. are installed by a partition plate attached to the bottom plate that forms part of the casing of the outdoor unit. It is divided into a blower room. In the upper part of the machine room, an electrical component unit including a power supply device that supplies driving power to devices such as a compressor and a blower fan, a control board that controls the operation of the outdoor unit, and the like is disposed.

  The conventional example of the electrical component unit includes a structure in which an upper partition plate having a power supply device and a control board and a front plate are coupled to a bottom plate fixed on the partition plate, and the upper partition plate and the front plate are supported by beams. There is something that has become. (See Patent Document 1)

JP 2012-159222 A

  In the case of the conventional example, in order to connect the cable to the board attached to the upper partition plate, the cable is inserted from the upper part of the front plate or the periphery of the bottom plate and the connector at the end of the wiring is connected to the connector on the board. However, in either case, connection work cannot be done without opening the front plate.

  In recent years, an outdoor unit of an air conditioner needs to be equipped with a large communication board or an inverter board in order to increase the capacity, and accordingly, a large current flows and a power supply component also becomes large. Therefore, it is difficult to open the front plate having a large power supply component.

  An object of the present invention is to solve the above-described problems and to provide an outdoor unit for an air conditioner including an electrical component unit that improves the workability of cable connection.

  In order to solve the above-described problems, the housing and the interior of the housing are divided into a blower chamber and a machine room by a lower partition plate and an electrical component partition plate placed on the lower partition plate, Is an air conditioner outdoor unit in which a blower fan and a heat exchanger are disposed, and an electrical component unit is disposed in the machine room, and the electrical component unit includes a substrate attached to the electrical component partition plate. A first electric component unit, and a second electric component unit having an electric component attached to a substrate fixing plate supported at one end at a front end of the first electric component unit, wherein the substrate fixing plate includes: One electrical component unit has an opening, and a cable connected to the board can be inserted into the opening and connected to the board.

  The outdoor unit of the air conditioner of the present invention configured as described above can connect the electrical component unit by inserting a cable from the opening of the substrate fixing plate of the second electrical component unit and connecting it to the substrate of the first electrical component unit. Even if it is not opened, cable connection is possible and workability is improved.

It is a front side perspective view of the outdoor unit of the air conditioner by this invention. It is a back side perspective view of the outdoor unit of an air conditioner. It is a figure which shows the internal structure of the outdoor unit of an air conditioner. It is the elements on larger scale around an electric equipment unit. It is explanatory drawing of a lower partition plate. It is explanatory drawing of attachment of an electrical component unit. It is a figure of an electrical equipment parting plate. It is an exploded view of an electrical component unit. It is explanatory drawing of the framework of an electrical component unit. It is a figure of a 1st electrical component unit, (a) is a left side perspective view, (b) is an exploded view. It is AA fragmentary sectional drawing of FIG. It is a right side perspective view of an electrical component unit. It is explanatory drawing of a top board | substrate and a board | substrate fixture. It is explanatory drawing of the assembly of a 3rd electrical component unit.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated in detail as an Example based on an accompanying drawing. The present invention is not limited to this.

  The outdoor unit of the air conditioner according to the present invention is installed outdoors, and is connected to at least one indoor unit installed in the air-conditioned room via a refrigerant pipe to constitute a refrigeration cycle.

  The outdoor unit 1 (hereinafter referred to as the outdoor unit 1) of the air conditioner shown in FIGS. 1 and 2 has a substantially rectangular parallelepiped casing 11. In the rectangular parallelepiped housing 11, the upper surface is the upper surface or the upper surface, the upper surface is the bottom surface or the lower surface, the surface with the air outlet 31 described later is the front surface or the front, the front surface is the rear surface or the rear, and the outdoor air intake port described later In the following description, the surface with 141 is the right side or right side, and the right side surface is the left side or left side. The same applies to each part.

  The outer case of the housing 11 is mainly formed of a steel plate, and the front surface and the left side surface of the housing 11 are covered with a front panel 30. Air outlets 31 that are opened in a circle in accordance with a blower fan 21 to be described later are provided at two locations above and below the front surface of the front panel 30. The periphery of the blowout port 31 includes a bell mouth 32 formed in a trumpet shape by extending the steel plate of the front panel 30 inward. The air outlet 31 is covered and protected by a fan guard 35 that is formed by processing a wire. The left side surface of the front panel 30 is provided with a suction port 33 composed of 5 × 7 rectangular holes.

  The right side of the front surface of the housing 11 and the front side of the right side surface are covered with a lower pipe 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 back side of the right side surface of the housing 11 and a part of the back surface are covered with the back panel 14. A plurality of horizontally long hole-like outside air inlets 141 for taking in outside air into an electrical component unit 5 described later are provided at the lower right side of the back panel 14.

  The front panel 30, the piping cover 12, and the rear panel 14 are assembled by screwing to the bottom plate 15 having the legs 151 that support the casing 11 as the bottom of the casing 11, and the upper ends of the front panel 30, the service panel 13, and the rear panel 14. Is covered with a top plate 16. The top plate 16 is assembled to the front panel 30, the piping cover 12, and the rear panel 14 by screws. In FIG. 1, the upper part of the service panel 13 is cut away to illustrate the internal electrical component unit 5.

  As shown in FIG. 3, the inside of the housing 11 is erected on the bottom plate 15, and the right end of the front panel 30 is screwed, and is parallel to the side surface of the housing 11 and from the bottom plate 15 to the lower end of an electrical component partition plate 52 to be described later. And a fan room FR on the front panel 30 side and a machine room MR on the service panel 13 side by means of a lower partition plate 24 having a height up to and an electrical part partition plate 52 placed on the front side of the lower partition plate 24. It is divided into. An upper partition plate 26 described later is also provided on the back side of the lower partition plate 24.

  In the blower room FR, two propeller fan type blower fans 21 are provided at the top and bottom. 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 the blower chamber FR, a heat exchanger 18 having an L shape in a top view is arranged from the left side to the back side. The heat exchanger 18 includes a plurality of fins 181 arranged in parallel and heat transfer tubes 182 arranged in a meandering manner so as to be orthogonal to the fins 181. Referring to FIG. 2, the rear side of the housing 11 is exposed to the rear side of the heat exchanger 18 so that the heat exchanger 18 is exposed between the side end of the back panel 14 and the side end of the front panel 30 to take outside air into the blower chamber FR. The back suction port 22 is provided with a protective member 23.

  Returning to FIG. 3, in the machine room MR, the electrical component unit 5 is arranged at the upper part, and the refrigerant circuit components 4 such as the accumulator 40, the compressor 41, the four-way valve 42, the refrigerant pipe 43 and the expansion valve 44 are arranged at the lower part. ing.

  With the above configuration, the outdoor unit 1 of the air conditioner transfers the heat of the high-temperature and high-pressure refrigerant flowing through the heat transfer pipe 182 of the heat exchanger 18 from the heat transfer pipe 182 to the fins 181 during cooling operation, for example. The fin 181 is cooled by the air sucked from the suction port 33 and the rear suction port 22 by the blower fan 21 to exchange heat.

  As shown in FIG. 4, the heat exchanger 18 includes a heat exchanger mounting plate 183 that surrounds the right end of the heat exchanger 18. The heat exchanger mounting plate 183 has a plurality of holes, and the heat transfer tubes 182 pass through the holes and are connected to other heat transfer tubes 182 and the refrigerant piping 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 a right angle toward the heat exchanger 18 to form a heat exchange angle portion 185. A lower partition plate 24 and an upper partition plate 26 to be described later are assembled to the heat exchanger mounting plate 183 and the heat exchange angle portion 185 and screwed.

  Referring also to FIG. 5, the lower partition plate 24 is parallel to the side surface of the housing 11 along the refrigerant circuit components 4 (accumulator 40, compressor 41, refrigerant pipe 43, etc.) disposed inside the machine room MR. A first partition surface 241 on the front surface side, a second partition surface 242 fixed to the heat exchanger mounting plate 183 parallel to the rear surface of the housing 11 on the back surface side, and the first partition surface 241 and the second partition surface 242. A third partition surface 243 that connects the two with an inclined surface. The front end of the lower partition plate 24 includes a lower front flange portion 244 that is bent toward the machine room MR. The upper end of the lower partition plate 24 is provided with a receiving portion 25 bent toward the machine room MR side. The receiving portion 25 positioned 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 extending portion 251a that partially extends to the machine chamber MR side at a position where a stopper 57 described later stops.

  An upper partition plate 26 is provided above the second partition surface 242 of the lower partition plate 24. The upper partition plate 26 is bent to the back side at the right end and is screwed to the heat exchanger mounting plate 183. The left end of the upper partition plate 26 is fixed to the electrical component partition plate 52. A lower end of the upper partition plate 26 is provided with a fixed piece 262 and a fixed piece 263 that are bent so as to contact the receiving portion 25 of the lower partition plate 24. Referring also to FIG. 6, an insertion claw 264 that gradually rises in the direction of the blower chamber FR is provided at the upper left portion of the upper partition plate 26. A fixing tool 265 extending inward is provided on the upper right portion of the upper partition plate 26.

  As shown in FIGS. 5 and 7, the electrical component partition plate 52 is bent at a right angle from the mounting surface 53 located on the first partition surface 241 of the lower partition plate 24 obtained by bending a steel plate and from the back side of the mounting surface 53. The fixed corner 54 extending from the corner 541 and the corner 541 to the upper partition plate 26 and fixed to the upper partition plate 26, the column mounting portion 521 that is bent in multiple steps from the front end of the mounting surface 53, and the column mounting An upper front flange portion 522 that is flush with the lower front flange portion 244 on the front surface of the portion 521 is formed.

  Further, a support column 55 that is fixed inside the support column mounting portion 521 and whose right side protrudes from the upper front flange portion 244 is coupled to a lower end corner portion of the mounting surface 53 and the fixing surface 54, and a bent piece 561 whose front end is bent downward. And a corner fixing plate 56 that contacts the receiving portion 25 of the third partition surface 243.

  The lower end of the mounting surface 53 is a rail surface 58 that is bent toward the blower chamber FR side. The rail surface 58 includes a rail guide portion 581 where the end of the rail surface 58 is bent downward. Further, 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 column mounting portion 521 at the front end is bent downward toward the machine room MR side. A guide portion 523 is provided.

  The left-right width W1 from the inside of the rail guide portion 581 to the inside of the front guide portion 523 is the same as the left-right width of the rail receiving portion 251 of the lower partition plate 24. The left-right width W2 of the rail surface 58 is the same as the left-right width of the stopper extension 251a. Therefore, the stopper extending portion 251a is restricted between the rail guide portion 581 and the stopper 57, and the rail receiving portion 251 is restricted 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 includes a first electrical component unit 6 composed of electrical components attached to the electrical component partition plate 52, and one end supported by the front end of the first electrical component unit 6. A second electrical component unit 7 disposed on the service panel 13 side and orthogonal to the first electrical component unit 6, and mounted on the first electrical component unit 6 and the second electrical component unit 7 along the upper surface of the housing 11. It is formed by three surfaces of the third electrical component unit 8 to be arranged. A rectangular parallelepiped space is formed inside the electrical component unit 5 shown in FIG. This space serves as a pipe housing part 45 and houses a part of the refrigerant circuit component 4 arranged in the machine room MR shown in FIGS. 3 and 6, specifically, the expansion valve 44, the accumulator 40 and the upper part of the refrigerant pipe 43. It becomes possible to do. Thereby, the height of the housing | casing 11 can be formed low and it becomes the compact outdoor unit 1. FIG.

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

  Further, as shown in FIGS. 4, 8, and 10, the electrical component partition plate 52 of the first electrical component unit 6 and the board fixing plate 71 of the second electrical component unit 7 may be provided with electrical components on both sides. The electrical component can be provided on the top substrate 82 of the substrate fixing set 84 that is detachably attached to the support frame 81 of the third electrical component unit 8, and a large-sized substrate or power supply component associated with the increase in capacity can be provided. It becomes possible to arrange sufficiently.

  The support frame 81 of the third electrical component unit 8 is formed of a steel plate and is a U-shaped cross section having reinforcing portions 817 and 818 that are bent inwardly above and below the support frame 81, respectively, as shown in FIG. It is bridged on both upper and lower ends of the electrical part partition plate 52. The support frame 81 is 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 a right angle from the rear arm portion 811, and being bent at a right angle from the right arm portion 812. Is formed of a front arm portion 813 which is inclined forward and is screwed to the upper end of the upper front flange portion 522.

  The rear arm portion 811 has an insertion claw hole 811 a at a position facing the insertion claw 264 of the upper partition plate 26, and a rear mounting tool 814 bent to the back side is provided at a position facing the fixing tool 265. ing. Engagement holes 811b are provided at two positions on the left and right of the rear attachment 814.

  Further, in front of the right arm portion 812, there is a right fixture 815 bent to the right side. The front arm portion 813 has a crank-shaped front attachment 816 that is bent along the bottom surface from the front surface of the front arm portion 813 and further bent downward. A part of the front fixture 816 is further bent forward to form a hooking claw 816a.

  The support column 55 described above with reference to FIG. 7 has a height from the lower end of the electrical component partition plate 52 to the bottom of the support frame 81, and hinge slits 551 are provided at two positions on the front side of the support column 55. Prepare. The hinge slit 551 is provided with a long groove 552 at the upper end on the left side and a long groove 553 at the lower end on the right side.

  The board fixing plate 71 is formed of a steel plate, and includes an attachment surface 710 parallel to the front surface of the housing 11, a terminal block attachment surface 711 inclined forward from a lower portion of the attachment surface 710, an attachment surface 710, and a terminal block attachment surface 711. An inclined surface 712 inclined forward and left is provided. A hinge surface 713 that is parallel to the front surface is provided at the left end of the inclined surface 712, and hinge pieces 714 project from the end of the hinge surface 713 to the hinge slit 551 of the support column 55 in two vertical directions toward the left side. Is provided.

  The substrate fixing plate 71 has an opening 73 cut out from the hinge surface 713 to the inclined surface 712. The opening 73 has a height that is about half the height of the substrate fixing plate 71, and is largely opened at the center of the substrate fixing plate 71.

  The inclined surface 712 is provided with hole-shaped connector relay portions 74 at two locations above and below the opening 73. A relay connector 741 is fitted into the connector relay portion 74.

  Further, the mounting surface 710 of the board fixing plate 71 and the right end of the terminal block mounting surface 711 are bent rearward and further bent to the right to become 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.

  When the board attachment plate 71 is inserted from the front into the groove 552 of the hinge slit 551 of the column 55 and the attachment surface 710 is moved backward, the hinge piece 714 is fitted into the groove 553 of the hinge slit 551 and temporarily fixed. The Next, the hooking claw 816a of the front mounting tool 816 of the support frame 81 is hooked into 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 tool 816 are screwed. Thus, the framework of the electrical component unit 5 is assembled.

  Actually, the electrical component unit 5 is attached with various electrical components such as heat sinks 631, 632, 633, an inverter board 611, and a capacitor 821, which will be described later, and the electrical component unit 5 itself is formed of a steel plate. It is about 15 kilometers. In order to place this on the lower partition plate 24 easily, the electrical component unit 5 is first raised to the height of the lower partition plate 24 as shown in FIG. Next, the rail surface 58 is placed on the rail receiving portion 251 in such a manner that the rail receiving portion 251 of the lower partition plate 24 is sandwiched between the rail guide portion 581 of the electrical component partitioning plate 52 and the stopper 57. Then, the electrical component unit 5 is slid rearward. If it 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 251a 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 prevented from being displaced in the left-right direction and temporarily fixed.

  Further, as the electrical component unit 5 moves, the upper end of the electrical component unit 5 is also temporarily fixed by fitting the insertion claw 264 of the upper partition plate 26 into the insertion claw hole 811 a of the support frame portion 81.

  The electrical component unit 5 temporarily fixed is screwed to the rear mounting tool 814 of the support frame 81 and the fixing tool 265 of the upper partition plate 26. Then, the right fixture 815 of the support frame 81 and the flange 716 of the board mounting plate 71 shown in FIG. 1 are fixed to the machine room MR by screwing to the back panel 14.

  Next, 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 a steel plate on the mounting surface 53 of the electrical component partition plate 52. It is done. The electrical components include an inverter board 611 on the rear side (right side of the mounting base 61), two fan motor drive boards 62 arranged vertically on the front side (left side of the mounting base 61), and a diode bridge 614 on the fan motor drive board 62. Is provided. Both are substrates and heat-generating components on which heat-generating elements are mounted. In order to cool these electrical components, the electrical component 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 that cover the mounting holes 531 and cool the inverter board 611, the fan motor drive board 62, and the diode bridge 614 are provided on the fan chamber FR side of 52, respectively.

The heat sinks 631, 632, and 633 have a plurality of heat dissipating fins 63a arranged vertically, and a ventilation path 632 is formed so that air K1 described later flows laterally.
got in line

  A reactor 613, which is a heat generating component, is provided on the inverter board 611. The reactor 613 is covered with a duct 651 that is open on the front side and the back side and is bent in a U-shape. The mounting base 61 has a vent hole 532 according to the reactor 613. On the side of the blower room FR of the electrical component partition plate 52, there is provided a water shielding lid 64 provided with a plurality of horizontally long slit-like ventilation holes 641 that cover the ventilation openings 532 and have a ridge at the top.

  The mounting surface 53 of the electrical component partition plate 52 includes an air intake port 59 between a corner portion 541 (on the back side of the electrical component partition plate) with the fixed surface 54 and one end of the heat sink 631. The air intake port 59 is composed of a plurality of longitudinally slit-shaped vent holes 591 inclined toward the machine room MR side toward the back side by press working, and is provided in five rows horizontally and two columns vertically.

  The mounting base 61 is provided around the air intake port 59 so as to protrude toward the machine room MR and cover the two front portions of the vent hole 591, and a ventilation guide portion 617 that guides the air K 1 to the air intake port 59. The opening in the ventilation guide 617 becomes an air inlet 615.

  The air intake port 59 is located adjacent to the heat sink 631 on the blower 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 a wind guide cover 652.

  The air guide cover 652 includes an air guide surface 653 inclined on the air intake port 59 side, and has an air outlet 654 in front of the heat sink 631.

  Next, the flow of air in the electrical component unit 5 will be described. The air that is pulled by the blower fan 21 and flows from the outside air inlet 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 water shielding lid 64 from the duct 651. Air K <b> 2 flows into the blower chamber FR directly from the vent hole 641 toward the blower fan 21.

  The air K1, which is a part of the air, enters the air inlet 615 of the mounting base 61 and flows into the air guide cover 652 from the air intake port 59 along the protruding air guide portion 617 of the mounting base 61. The heat sink 631 is cooled along the air guide surface 653 of the air guide cover 652 through the air passage 63b of the heat sink 631, and reaches the blower chamber FR from the air outlet 654.

  By providing the air guide cover 652 that allows the air before heat exchange to flow directly to the heat sink 631, it is possible to efficiently cool the substrate and the heat generating component on which the heat generating element on which the heat sink 631 is mounted is mounted. Further, a triple water-impervious structure is provided by the air guide cover 652, the vertically slit-shaped vent hole 591 inclined toward the machine room MR side, and the vent guide portion 617 that covers a part of the air intake port 59. Water intrusion from the FR chamber can be prevented.

  Also, the electrical components in the electrical component unit 5 are cooled to flow the air K2 directly from the impermeable lid 64 toward the blower fan 21 to the blower fan FR, and to the blower cover 652 to cool the heat sink 631 to cool the blower chamber FR. Outflow direction is different from the air K1 flowing in front of the air, and it is possible to efficiently cool the electrical components without affecting each other and increase the heat radiation efficiency.

  As described above, the first electrical component unit 6 includes the two fan motor drive boards 62 arranged in the vertical direction in front of the mounting base 61. The fan motor drive board 62 includes a first connector 621 and a second connector 622. The first connector 621 is connected to the first cable 46 that drives the fan motor 20, and the second connector 622 is connected to the second cable 47 that is a signal line of the fan motor 20.

  The first connector 621 is disposed in front of the fan motor drive board 62, and the first connector 621 is visible from the opening 73 of the second electrical component unit 7 as shown in FIGS. 4 and 12.

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

The second connector 622 is connected to a relay connector 741 provided in the connector relay portion 74 on the inclined surface 712. By connecting the second cable 47 to the relay connector 741 of the connector relay portion 74, the second connector 622 is connected. Can be connected. Thereby, even if it does not open the 2nd electrical component unit 7 of the electrical component unit 5, the connection and maintenance of the 1st cable 46 and the 2nd cable 47 are attained, and workability | operativity improves.

  In the third electrical component unit 8, as shown in FIG. 13, the top substrate 82 is fixed to the substrate fixture 83 to form the substrate fixing set 84 of FIG. 14, and this substrate fixing set 84 is attached to the support frame 81 from below. .

  The top substrate 82 has a capacitor 821 and other electrical components on the bottom surface of a rectangular plate. 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 by a substrate support portion 832 provided in an edge shape at the inner lower portion of the fixed frame 831. Furthermore, the protruding piece 833 protrudes from the inside upper part of the right long side of the fixed frame 831, and protrudes from the inside of the long side of the left side of the fixing frame 831 to one place from the inside of the short side of the front. The engaging claw 834 is provided. The substrate support portion 832 is cut off at a portion where the protruding piece 833 and the locking claw 834 are present. The distance from the upper surface of the substrate support portion 832 to the lower end of the protruding piece 833 and the locking claw 834 is substantially the same as the thickness of the plate of the top substrate 82. Two beams 835 that reinforce the fixing frame 831 are provided below the substrate fixture 83 so as not to contact the capacitor 821. The protruding piece 833 may be used as the locking claw 834.

  The top substrate 82 is inserted into the substrate fixture 83 from above, the right long side is fitted between the substrate support portion 832 and the protruding piece 833, and then the top substrate 82 is fitted so as to be positioned below the locking claw 834. It is fixed by inserting.

  Referring to FIG. 8 as well, the substrate fixture 83 is provided with two engaging claws 836 and 836 that protrude to the back side outside the fixed frame 831 located on one short side (back side) of the top substrate 82. It has been. As shown in FIG. 13, the substrate fixture 83 is provided with two attachment pieces 838 and 838 protruding outside the fixed frame 831 located on the other short side (front side) of the top substrate 82. 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. Further, a screw piece 837 is provided between the attachment pieces 838 and 838 and is positioned below the support frame 81 when assembled with the support frame 81.

  The board fixture 83 which is the board fixing set 84 is aligned with the support frame 81 from below, and two engagement claws 836 on the back side are fitted into the engagement holes 811 b of the support frame 81. The engagement claw 836 and the engagement hole 811b have some play. When the board fixture 83 is pushed slightly backward and the front attachment piece 838 is pushed upward, the claw portion 838a of the attachment piece 838 reinforces the support frame 81. It rests on the part 818. This is temporarily fixed. At this time, since the engaging claw 836 and the claw portion 838a of the attachment piece 838 are supported by the support frame 81, there is no possibility of dropping. Finally, the board fixing set 84 is fixed to the support frame 81 by aligning the screw holes 837 and the screw holes of the support frame 81 and screwing them from below.

  When removing the board fixing set 84 for maintenance, the screw is removed and the board fixing tool 83 is pushed slightly backward to pull the front mounting piece 838 downward, and the claw 838a of the mounting piece 838 is attached to 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. Moreover, the board | substrate fixing set 84 is attached to the right side of the support frame 81, and the clearance gap 86 is provided between the electrical equipment part partition plates 52. FIG. In the gap 86, the duct 651 of the first electrical component unit 6 described above is disposed. Thereby, the board fixing set 84 and the duct 651 are arranged side by side, whereby the height of the electrical component unit 5 can be further reduced, and the height of the housing 11 can be lowered.

  As described above, the U-shaped support frame 81 on which the electrical component partition plate 53 is bridged is provided, and the substrate fixing set 84 in which the support substrate 81 and the substrate fixing tool 83 that supports the top substrate 82 are integrated. As a result, the electrical component (capacitor 821) can be provided on the upper portion of the housing 11. Further, by providing the substrate fixing set 84 on the upper portion of the housing 11, the height of the housing 11 can be lowered. The board fixing set 84 is attached to the right side of the support frame 81 so that a gap 86 is provided between the board fixing set 84 and the electrical component partition plate 52. In the gap 86, the duct 651 of the first electrical component unit 6 is disposed. Thereby, the board fixing set 84 and the duct 651 are arranged side by side, so that the height of the electrical component unit 5 can be further reduced, and the height of the housing 11 can be lowered. Furthermore, since the substrate fixing set 84 is detachable, the top substrate 82 can be removed from below, and the maintenance workability is improved.

1: outdoor unit, 11: housing, 12: piping cover, 13: service panel, 14: back 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 portion, 351: rail receiving portion, 251a: extension portion for stopper, 26: upper partition plate, 264: insertion claw 30: front panel 4: refrigerant circuit component, 40: Accumulator, 43: Refrigerant pipe, 45: Pipe housing part, 46: First cable, 47: Second cable 5: Electrical component unit, 52: Electrical part partition plate, 53: Mounting surface, 54: Fixed surface, 541 : Corner, 55: support, 551: slit for hinge, 56: corner fixing plate, 57: stopper, 58: rail surface, 581: rail guide, 59: air intake, 591: vent hole 6: first 1 electrical component unit 61: mounting base, 611: inverter board, 62: fan motor drive board, 621: first connector, 622: second connector, 631: heat sink, 64: water shielding 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 8: third electrical component unit, 81: support frame, 82: top substrate, 83: substrate fixture 84: Board fixing set, 85: Insulating sheet, 86: Gap MR: Machine room, FR: Blower room

Claims (3)

The housing and the interior of the housing are divided into a blower chamber and a machine room by a lower partition plate and an electrical part partition plate mounted on the lower partition plate, and a blower fan and a heat exchanger are arranged in the blower chamber In the outdoor unit of the air conditioner in which the electrical component unit is arranged in the upper part of the machine room,
The electrical component unit includes a first electrical component unit having a substrate attached to the electrical component partition plate, and an electrical component attached to a substrate fixing plate having one end supported at a front end of the first electrical component unit. 2 electrical component units,
The substrate fixing plate has an opening on the first electrical component unit side,
An outdoor unit of an air conditioner, wherein a cable connected to the substrate can be inserted into the opening and connected to the substrate.   The first electrical component unit includes a fan motor drive board and a first connector on the second electrical component unit side, and the first cable connected to the blower fan is inserted from the opening into the first connector. The outdoor unit for an air conditioner according to claim 1, wherein the outdoor unit can be connected.   The board fixing plate includes a relay connector in the vicinity of the opening, the relay connector is connected to a second connector located on the rear side of the fan motor drive board, and the second cable connected to the blower fan is: The outdoor unit for an air conditioner according to claim 1 or 2, wherein the outdoor unit can be connected to the second connector by connecting to the relay connector.

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