JP2019143882A - Outdoor machine of air conditioner - Google Patents

Abstract

To easily carry a heavy electric component unit.SOLUTION: An outdoor unit of an air conditioner is configured such that an electric component unit 5 formed by connecting a first electric component unit 6 and a second electric component unit 7 in a substantially L shape in a plan view is provided in a machine chamber. On an inner surface side where an electric component of an electrical component partition plate 52 included in the first electric component unit 6 is mounted, a portable handle 510 is provided.SELECTED DRAWING: Figure 15

Description

  The present invention relates to an outdoor unit of an air conditioner, and more particularly to a 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 one or more indoor units installed in an air-conditioned room are connected via a refrigerant pipe to form a refrigeration cycle. . 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.

  For example, in the outdoor unit described in Patent Documents 1 and 2, as an electrical component unit, a first electrical component unit in which predetermined electrical components are mounted on an electrical component partition plate included in the upper part of the partition plate, and a service panel And a second electrical component unit in which a predetermined electrical component is mounted on a mounting substrate that is supported at the front end of the first electrical component unit so as to be opened and closed like a door.

  The compressor and accumulator are installed in the machine room of the casing including their piping, but the electrical component unit is assembled in a separate process and installed in the upper part of the machine room (see, for example, Patent Document 3). ).

  Various electrical components such as a reactor, a heat sink, an inverter board, and a capacitor are attached to the electrical component unit, and the electrical component unit itself is formed of a steel plate, so the weight reaches about 15 kg.

  Therefore, when installing in a machine room, it lifts so that an operator may carry. Further, when the electrical component unit is removed from the machine room during maintenance, it is carried in the same manner as if it is held.

  At this time, for example, the outside of the electrical component unit can be put on a heat sink, but there is no place for gripping the inside, so there is a problem that it is difficult to carry around.

  In addition, although the electrical component box with a handle is described in Patent Document 3, since the part where the handle is provided is outside the electrical component box, the outside of the electrical component unit is gripped with both hands. This is not easy to carry because the balance of carrying is not good.

JP 2012-159222 A JP 2013-50255 A JP 2012-241939 A JP 2014-47991 A (FIG. 3)

  Accordingly, an object of the present invention is to provide an electrical component in an outdoor unit of an air conditioner that includes an electrical component unit formed by connecting a first electrical component unit and a second electrical component unit in a substantially L shape in plan view. It is to make the unit easy to carry.

In order to solve the above-described problems, the present invention has a rectangular parallelepiped housing, and the interior of the housing includes a lower partition plate and an electric part partition plate placed on the lower partition plate, and a fan chamber. Air conditioner with air blower fan and heat exchanger arranged in machine room, electrical equipment unit in the upper part and refrigerant circuit parts including accumulator and refrigerant pipe in the lower part in the machine room In outdoor unit,
The electrical component unit includes a first electrical component unit in which electrical components are attached to the electrical component partition plate, and one end supported at the front end of the first electrical component unit, and is substantially L-shaped with respect to the first electrical component unit. A second electrical component unit connected in a shape,
A carrying handle is provided on the inner surface side where the electrical component of the electrical part partition plate included in the first electrical component unit is mounted.

  According to a preferred aspect of the present invention, the handle has an inclination of 45 degrees with respect to a virtual vertical line or horizontal line.

  In addition, the electrical component partition plate to which the first electrical component unit is attached is divided into a first electrical component partition plate on the front end side and a second electrical component partition plate on the rear end side as viewed from the second electrical component unit side. A mode in which the second electrical component part partition plate is bent into a square shape with an angle with respect to the first electrical component part partition plate, and the handle is provided on the second electrical component part partition plate side is also present. Included in the invention.

  According to the present invention, a first electrical component unit in which electrical components are attached to the electrical component partition plate, and one end supported at the front end of the first electrical component unit are connected in an approximately L shape to the first electrical component unit. In the electrical component unit including the second electrical component unit, a handle for carrying is provided on the inner surface side where the electrical component of the electrical component partition plate included in the first electrical component unit is mounted. A place having the electric component unit is formed on the inner surface side of the partition plate, and the electric component unit can be carried and carried, and workability is improved.

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. The expansion perspective view which shows the electrical equipment unit with which the outdoor unit of the said air conditioner is provided. The perspective view which shows each part of a lower part partition plate and the electrical equipment part partition plate of the said 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 equipment part partition plate. The disassembled perspective view which shows the said electrical component unit. The perspective view which shows the framework of the said electrical component unit. The (a) left side perspective view and (b) exploded view which show the 1st electrical component unit contained in the said electrical component unit. The AA fragmentary sectional view of FIG. The right side perspective view which shows the inside of the said electrical equipment unit. The perspective view which isolate | separates and shows the top board | substrate with which the said electrical component unit is provided, and a board | substrate fixture. The perspective view which shows the assembly method of the 3rd electrical component unit contained in the said electrical component unit. The perspective view which shows another embodiment of the electrical equipment part partition plate of the said electrical equipment unit. (A) The perspective view which shows the upper part of another embodiment of the said electrical equipment part partition plate, (b) The schematic diagram explaining the bending angle of the 1st electrical equipment part partition plate with respect to the 1st electrical equipment part partition plate. The typical perspective view which shows the state which lifted the said electrical component unit using the handle provided in the inside. The principal part perspective view which shows the example which provided the receiving plate of the electrical component unit in the upper end of the lower partition plate as a preferable aspect of this invention. (A), (b) Explanatory drawing which shows the state which moves an electrical component unit to a fixed position by using the said receiving plate as a guide. The perspective view which shows embodiment which has the improved thermal radiation path | route of the 2nd electrical component unit contained in the said electrical component unit. The perspective view which wrote the flow direction of the cooling air in FIG.

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

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

  First, referring to FIG. 1 and FIG. 2, an outdoor unit 1 of an air conditioner according to this embodiment (hereinafter simply referred to as “outdoor unit 1”) 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 having 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 outside air is described later. The following description will be made assuming that the surface having the inlet 141 is the right side or the right side, and the opposite side of the right side is the left side or the 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 circularly in accordance with a blower fan 21 to be described later are provided at two locations on the upper and lower sides 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 blower outlet 31 is covered and protected by a fan guard 35 obtained by processing a wire. In this embodiment, a suction port 33 made up of 5 × 7 rectangular holes is provided on the left side surface of the front panel 30.

  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 side are covered with the back panel 14. At the lower right side of the back panel 14, a plurality of laterally long outside air inlets 141 for taking outside air into the electrical component unit 5 described later are provided.

  The front panel 30, the piping cover 12, and the rear panel 14 are assembled by screwing to a bottom plate 15 that has a leg portion 151 that serves as a bottom surface of the casing 11 and supports the casing 11. The upper end is covered with a top plate 16.

  The top plate 16 is assembled to the front panel 30, the service panel 13, and the back panel 14 by screws. In FIG. 1, the upper portion 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, parallel to the side surface of the housing 11 and from the bottom plate 15 of an electrical component partition plate 52 to be described later. The blower room FR on the front panel 30 side and the machine room MR on the service panel 13 side are provided by 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. It is divided into and. Further, an upper partition plate 26 described later is disposed on the back side of the lower partition plate 24.

  In the blower chamber FR, propeller fan type blower fans 21 are provided at two locations on the upper and lower sides. 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.

  With reference to FIG. 2, the heat exchanger 18 is exposed between the side end of the back panel 14 and the side end of the front panel 30 on the back side of the housing 11. On the back side of the housing 11, a portion where the heat exchanger 18 is exposed is a back surface suction port 22 for taking outside air into the blower chamber FR, and the back surface 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. Has been.

  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 tube 182 of the heat exchanger 18 to the fins 181 from the heat transfer tube 182 during the cooling operation, for example. At the same time, the fin 181 is cooled by the air sucked from the suction port 33 and the back surface suction port 22 by the blower fan 21 so that heat exchange is performed.

  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 and fixed to the heat exchanger mounting plate 183 and the heat exchange angle portion 185 with screws.

  Referring also to FIG. 5, the lower partition plate 24 extends along the refrigerant circuit component 4 (accumulator 40, compressor 41, refrigerant pipe 43, etc.) disposed inside the machine room MR. The first partition surface 241 on the front side parallel to the side surface, the second partition surface 242 fixed to the heat exchanger mounting plate 183 parallel to the back surface of the housing 11 on the back side, the first partition surface 241 and the second partition surface 241 It has the 3rd partition surface 243 which connects between the partition surfaces 242 with an inclined surface.

  The lower partition plate 24 includes a lower front flange portion 244 that is bent toward the machine room MR side at the front end thereof. Further, the lower partition plate 24 includes a receiving portion 25 bent at the upper end thereof toward the machine room MR.

  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 at the right end on the back side and 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.

  Fixing pieces 262 and 263 are formed at the lower end of the upper partition plate 26 so as to be 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 toward the blower chamber FR direction is provided at the upper left portion of the upper finishing plate 26. A fixing tool 265 extending inward is provided at the upper right portion of the upper partition plate 26.

  As shown in FIGS. 5 and 7, the electrical part partition plate 52 includes a mounting surface 53 positioned on the first partition surface 241 of the lower partition plate 24 obtained by bending a steel plate, and a right angle from the back side of the mounting surface 53. A bent corner 541, a fixing surface 54 that extends from the corner 541 to the upper partition plate 26 and is fixed to the upper partition plate 26, and a column attachment portion 521 that is bent in multiple steps from the front end of the attachment surface 53 to form a recessed portion. The upper front flange portion 522 that is flush with the lower front flange portion 244 on the front surface of the column attachment portion 521 is provided.

  The electrical part partition plate 52 is further coupled to the column 55 fixed to the inside of the column mounting portion 521 and the right side protruding from the upper front flange portion 244, the lower end corner of the mounting surface 53 and the fixing surface 54, and the tip is A corner portion fixing plate 56 that abuts the receiving portion 25 of the third partition surface 243 with a bent piece 561 that is bent downward is provided.

  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 further, the bottom surface of the post mounting portion 521 at the front end is bent downward toward the machine room MR side. A front 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. Moreover, the left-right width W2 of the rail surface 58 is the same as the left-right width of the stopper extension 251a.

  As a result, 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 is supported at one end by the first electrical component unit 6 including electrical components attached to the electrical component partition plate 52 and 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. The third electrical component unit 8 is arranged on three surfaces.

  The 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 at substantially right angles, so that a rectangular parallelepiped is formed inside the electrical component unit 5 shown in FIG. A shaped space is formed.

  This space becomes the pipe accommodating portion 45, and 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 are provided. It can be accommodated. Thereby, the height of the housing | casing 11 can be formed low and it becomes the compact outdoor unit 1.

  As shown in FIG. 9, the framework of the electrical component unit 5 includes the above-described electrical part 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. The support frame 81 is formed.

  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 can be provided with electrical components on both sides, respectively. It is.

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

  The support frame 81 of the third electrical component unit 8 is a U-shaped cross section having reinforcing portions 817 and 818 formed of a steel plate and bent inwardly above and below the support frame 81, respectively, as shown in FIG. In addition, it is bridged at both upper and lower ends of the electrical component 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 a right angle from the rear arm portion 811, and a right angle from the right arm portion 812. A part of the middle is provided with a front arm portion 813 inclined forward and 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 that is bent to the back side at a position facing the fixing tool 265 is provided. It has been. 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 that is bent to the right. The front arm portion 813 includes a crank-shaped front fixture 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.

  Referring also to FIG. 7, the support column 55 described above has a height from the lower end of the electrical component partition plate 52 to below the support frame 81, and on the front side of the support column 55, there are two upper and lower hinges. A slit 551 is provided. 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.

  At the left end of the inclined surface 712, there is a hinge surface 713 parallel to the front surface, 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. It is provided as follows.

  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 greatly opened at the center of the substrate fixing plate 71 in the vertical direction.

  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.

  The right end of the mounting surface 710 of the board fixing plate 71 and the terminal block mounting surface 711 is a flange portion 716 that is bent rearward and further bent rightward and fixed to the rear panel 14. Further, a locking hole 715 is provided at the upper end of the mounting surface 710.

  The board mounting plate 71 is inserted into the groove 552 of the hinge slit 551 of the support column 55 from the front to move the mounting surface 710 rearward, so that the hinge piece 714 fits into the groove 553 of the hinge slit 551. Match. Thus, the second electrical component unit 7 is supported on the support 55 of the first electrical component unit 6 so as to be opened and closed.

  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.

  Various electrical components such as heat sinks 631, 632, and 633, an inverter board 611, and a 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. Is about 15kg.

  In order to easily place this on the lower partition plate 24, first, as shown in FIG. 6, the electrical component unit 5 is raised to the height of the lower partition plate 24. Next, the rail surface 58 is placed on the rail receiving portion 251 by aligning the position between the rail guide portion 581 of the electrical component partition plate 52 and the stopper 57 so as to sandwich the rail receiving portion 251 of the lower partition plate 24. Put it on.

  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 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 substrate mounting plate 71 to the back panel 14.

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

  Therefore, 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 blower chamber FR side of the partition plate 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.

  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, a water shielding lid 64 is provided which has a plurality of horizontally long slit-shaped ventilation holes 641 that cover the ventilation ports 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 vertically-slit vent holes 591 inclined toward the machine room MR side toward the back side by press working. In this example, the air intake port 59 is provided in five rows horizontally and two columns vertically. ing.

  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. 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. In addition, a triple water-blocking structure is formed by the air guide cover 652, the vertically slit-shaped vent hole 591 inclined to 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 blower FR chamber can be reliably prevented.

  In addition, the electric component in the electric component unit 5 is cooled and air K2 flowing directly from the impermeable cover 64 toward the blower fan 21 to the blower fan FR and the air guide cover 652 is cooled to cool the heat sink 631 and the blower chamber. The outflow direction is different from that of the air K1 flowing in front of the FR, and it is possible to efficiently cool the electrical components without affecting each other and to improve the heat radiation efficiency.

  As described above, the first electrical component unit 6 includes the two fan motor drive boards 62 arranged vertically in front of the mounting base 61 (closer to the service panel 13 side). Each fan motor drive board 62 is provided with 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 (closer to the service panel 13 side). As shown in FIGS. 4 and 12, the first connector 621 is inserted from the opening 73 of the second electrical component unit 7. Visible.

  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 the relay connector 741 provided in the connector relay portion 74 on the inclined surface 712, and the second connector 47 is connected to the relay connector 741 of the connector relay portion 74 to connect the second connector 621. 622 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.

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

  The top substrate 82 has a capacitor 821 and other electrical components on the bottom surface of the 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 by a substrate support portion 832 provided in an edge shape at the inner lower portion of the fixed frame 831.

  Further, the fixed frame 831 protrudes from the inner upper part of the right side of the right side at three locations, the left side of the fixed frame 831 from the inner side of the left side, and from the inner side of the front short side to one location. 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 so as not to contact the capacitor 821 are provided under the substrate fixture 83. Note that the protruding piece 833 may be the locking claw 834.

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

  Referring also to FIG. 8, the board fixture 83 has two engagement 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 board 82. Is provided.

  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. Yes.

  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, 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 fixing tool 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 it is supported on the support frame 81 by the engaging claw 836 and the claw portion 838a of the attachment piece 838, 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. Further, 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.

  The duct 651 of the first electrical component unit 6 described above is disposed in the gap 86. Thus, by arranging the board fixing set 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.

  As described above, the board fixing assembly includes the U-shaped support frame 81 that is bridged by the electrical component partition plate 53, and the support frame 81 is integrated with the top substrate 82 and the substrate fixture 83 that supports the top substrate 82. By attaching 84, the electrical component (capacitor 821) can be provided also on the upper portion of the housing 11.

  In addition, by providing the board fixing set 84 on the upper portion of the housing 11, the height of the housing 11 can be reduced. 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.

  The duct 651 of the first electrical component unit 6 is disposed in the gap 86. Thereby, the board | substrate fixing set 84 and the duct 651 are arranged side by side, and the height of the electrical component unit 5 can be made still lower, and the height of the housing | casing 11 can be made low by extension. Furthermore, since the board fixing set 84 is detachable, the top board 82 can be removed from below, and the maintenance workability is improved.

  By the way, in the said embodiment, although the 1st electrical component unit 6 is attached to the electrical component partition plate 52, as shown in FIG. 7, the electrical component partition plate 52 is a side surface (right side surface in FIG. 1). The inverter board 611 is disposed on the rear end side (back side) as viewed from the second electrical component unit 7 on the service panel 13 side of the electrical component partition plate 52.

  During maintenance of the electrical component unit 5, the service panel 13 is removed, and the second electrical component unit 7 is opened toward the outside of the housing 11 (front side in FIG. 1) to inspect the interior of the electrical component unit 5. However, since the inverter board 611 is disposed at a deeper position on the rear end side of the electrical component partition plate 52, the visibility of the inverter board 611 is poor, and the inverter board 611 is screwed, for example. When using the above tool, the workability is difficult.

  Accordingly, another embodiment for improving this point will be described with reference to FIGS. 15 and 16. In these drawings, components that are substantially the same as those described above are denoted by the same reference numerals. Is used.

  In this other embodiment, the electrical component partition plate 52 includes a first electrical component partition plate 52a on the front end side and a second electrical component partition plate on the rear end side as viewed from the second electrical component unit 7 on the service panel 13 side. The second electrical component partition plate 52b on the rear end side is bent at a predetermined angle with respect to the first electrical component partition plate 52a on the front end side. Referring to FIG. 16 (b), the bending angle θ of the second electrical part partition plate 52b with respect to the first electrical part partition plate 52a is defined with a plane including the first electrical part partition plate 52a as a reference plane of 0 degrees. This is an angle measured clockwise from the reference plane.

    That is, the first electrical component 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 partition plate 52b on the rear end side is the side surface of the housing 11 ( In FIG. 1, the first electrical component partition plate 52 a and the second electrical component partition plate 52 b have a square shape in plan view.

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

  Referring to FIG. 5, the lower partition plate 24 includes 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 back surface of the housing 11 on the back side. Since the second partition surface 242 fixed to the second partition surface 242 and the third partition surface 243 connecting the first partition surface 241 and the second partition surface 242 with an inclined surface are provided, the first electrical component partition plate 52a is provided. It is preferable that the first partition surface 241 is substantially the same surface and the second electrical component partition plate 52 b is substantially the same surface as the third partition surface 243.

  As described above, the second electric component partition plate 52b on the rear end side is inclined toward the side surface (right side surface in FIG. 1) of the housing 11, so that the inverter board 611 disposed on the second electric component partition plate 52b. In addition, it is possible to perform maintenance with good workability such that the hand can be easily brought close without worrying about other peripheral parts.

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

  As described above, the electrical component unit 5 is mounted with various electrical components such as the heat sinks 631, 632, 633, the inverter board 611, the capacitor 821, and the skeleton of the electrical component unit 5 is a steel plate. Due to the formation, the weight reaches about 15 kg. Therefore, it is not easy to lift and carry the electrical component unit 5.

  Therefore, in order to facilitate carrying of the electrical component unit 5, as a preferred aspect of the present invention, as shown in FIGS. 15 and 16, the electrical component partition plate 52 is provided on the inner surface side where the inverter board 611 and the like are mounted. A handle 510 is provided. The handle 510 may have a general shape made of a strip having screwing pieces 512 and 512 facing outward from each other at both ends of the U-shaped grip 511, and may be made of sheet metal or synthetic resin. There may be.

  In FIG. 15, the handle 510 is disposed on the air intake port 59 at a vacant position on the upper right side of the electrical component partition plate 52, in this example, on the diagonally upper right side of the inverter board 611. The handle 510 may be attached vertically or horizontally, but is preferably inclined about 45 degrees. The tilt direction may be either right-up (down to the left) or right-down (up to the left).

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

  In this example, the handle 510 is provided on the second electrical component partition plate 52b side of the electrical component partition plate 52, but the electrical component partition plate 52 to which the handle 510 is attached is as shown in FIG. It may be a flat plate having no bent portion.

  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 A rail receiving portion 251 for the rail surface 58 is formed at 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 rail receiving portion 251 is narrow, there is a difficulty in stability during movement.

  Therefore, as a configuration for solving this point, as shown in FIG. 18, a receiving plate 270 capable of stably moving the electrical component unit 5 to its fixed position is provided at the upper end of the lower partition plate 24.

  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 back surface of the housing 11. The second partition surface 242 and the third partition surface 243 that connects the first partition surface 241 and the second partition surface 242 are provided.

  The receiving plate 270 has a first partition surface 241, a third partition surface 243, and a second partition surface, with a side extending linearly from a substantially central portion of the first partition surface 241 to a substantially central portion of the second partition surface 242 as a hypotenuse. The first flange 271 is formed in a triangular shape that covers the upper end of 242 and is bent upward and is erected on the hypotenuse.

  In the embodiment here, as described in FIG. 15 above, the electrical component unit 5 includes the first electrical component partition plate 52a on the front end side and the second electrical component partition plate on the rear end side. The second electrical component partition plate 52b is bent at a predetermined angle with respect to the first electrical component partition plate 52a, and the lower end of the second electrical component partition plate 52b is A second flange 52c is provided that is bent and erected on the blower chamber FR side.

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

    As described above, the second electrical component unit 7 is supported by the support 55 of the first electrical component unit 6 so as to be openable and closable, and from the closed state substantially parallel to the service panel 13 (see FIG. 1). For example, up to 90 °.

  Referring to FIG. 16 again, a predetermined electrical wiring W (a three-phase power line in this example) is bridged between the first electrical component unit 6 and the second electrical component unit 7. Since the drive current value of the compressor or the like increases with the improvement of the air conditioning capability, a wiring having a large diameter is also used for the power supply line W. When the wiring becomes thick, it is difficult to route the wiring, and the opening and closing of the second electrical component unit 7 is also hindered.

  Therefore, the power supply 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 supply line W is provided above the board fixing plate 71 of the second electrical component unit 7. A wiring storage unit 75 for storing the minutes is provided.

  Referring also to FIG. 20, the wiring storage portion 75 is formed in a substantially box shape so as to protrude toward the service panel 13. The wiring storage portion 75 may be formed integrally with the substrate fixing plate 71 or may be formed as a separate body and retrofitted to the substrate fixing plate 71 by screwing or welding.

  Preferably, as shown in FIG. 16, a wiring hook 752 is provided in the wiring storage portion 75, and the excess length of the power supply line W is formed in a ring shape so as to pass through the wiring hook 752 a plurality of times. In this example, the wiring hook 752 is an annular body, but a hook-type hook can also be used.

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

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

  Many components for air conditioning control are mounted on both surfaces of the substrate fixing plate 71 of the second electrical component unit 7, and the heat generating components contained therein are the front surfaces of the substrate fixing plate 71 (surface on the service panel 13 side). ) Side, a part of the air taken into the electrical component unit 5 from the outside air intake port 141 (see FIG. 1) of the back panel 14 can be easily flowed to the front side of the board fixing plate 71. There is a need to cool the heat generating components more effectively.

  As described above, the vent 532 that discharges the cooling air of the reactor 613 to the blower chamber FR side is provided above the electrical component partition plate 52 (second electrical component partition plate 52 b) of the first electrical component unit 6. Is formed.

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

  As a result, as shown by arrow B in FIG. 21, a heat dissipation path is formed to improve the flow of cooling air from the front surface of the substrate fixing plate 71 through the second vent 751 toward the first vent 532, thereby fixing the substrate. The heat-generating component provided on the front side of the plate 71 can be cooled more effectively.

  Further, 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 support column 55 of the first electrical component unit 6. In that case, the second ventilation hole 751 can be used as a handle for carrying the second electrical component unit 7.

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, 270: receiving plate 271: first flange,
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, 510: handle, 52: electrical component partition plate, 53: mounting surface, 54: fixing surface, 541: corner, 55: support, 551: hinge slit, 56: corner fixing plate, 57 : Stopper, 58: Rail surface, 581: Rail guide part, 59: Air intake port, 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: water shielding lid, 651: duct , 652: a wind guide cover,
7: second electrical component unit, 71: board fixing plate, 73: opening, 74: connector relay section, 741: relay connector, 75: wiring storage section,
8: Third electrical component unit, 81: Support frame, 82: Top substrate, 83: Substrate fixture, 84: Substrate fixing assembly, 85: Insulating sheet, 86: Crevice MR: Machine room, FR: Blower room

Claims (3)

The housing has a rectangular parallelepiped shape, and the interior of the housing is divided into a blower chamber and a machine chamber by a lower partition plate and an electrical part partition plate placed on the lower partition plate, and the blower chamber includes a blower fan and In the outdoor unit of an air conditioner in which a heat exchanger is arranged, and in the machine room, an electrical component unit is arranged in the upper part and a refrigerant circuit component including an accumulator and a refrigerant pipe is arranged in the lower part.
The electrical component unit includes a first electrical component unit in which electrical components are attached to the electrical component partition plate, and one end supported at the front end of the first electrical component unit, and is substantially L-shaped with respect to the first electrical component unit. A second electrical component unit connected in a shape,
An outdoor unit for an air conditioner, wherein a handle for carrying is provided on an inner surface side where an electrical component of the electrical component partition plate included in the first electrical component unit is mounted.   The outdoor unit of an air conditioner according to claim 1, wherein the handle has an inclination of 45 degrees with respect to a virtual vertical line or horizontal line.   The electrical component partition plate of the first electrical component unit is partitioned into a first electrical component partition plate on the front end side and a second electrical component partition plate on the rear end side as viewed from the second electrical component unit side, The second electrical component partition plate is bent in a U-shape with a predetermined angle with respect to one electrical component partition plate, and the handle is provided on the second electrical component partition plate side. The outdoor unit of an air conditioner according to claim 1 or 2.

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