Air conditioning outdoor unit

Abstract

This ensures workability within the machine room and prevents electromagnetic noise from being superimposed on cables connected to the electrical equipment support section. [Solution] The outdoor unit has a machine chamber that accommodates a power terminal block, a first high-power cable, a first circuit board to which high voltage is supplied from an external AC power source via the power terminal block and the first high-power cable, a first electrical component support disposed along a first surface and supporting the first circuit board, and a second electrical component support disposed along a second surface adjacent to the first surface and supporting the power terminal block. An end of the first electrical component support facing the second surface and an end of the second electrical component support facing the first surface are disposed adjacent to each other. At least one of the first electrical component support and the second electrical component support is disposed to be movable around a movement axis that extends along the first and second surfaces. The first circuit board has a first connection portion to which the first high-power cable is connected. At least one of the first connection portion on the first circuit board and the power terminal block on the second electrical component support is located on the movement axis side.

Description

[Technical Field]

[0001] The present invention relates to an outdoor unit for an air conditioner. [Background technology]

[0002] A known outdoor unit for an air conditioning system has a housing separated by a partition into a heat exchange chamber containing a heat exchanger and a machine chamber containing components and piping that make up a refrigerant circuit through which refrigerant circulates, and an electrical equipment support section that supports electrical equipment such as a control board is provided within the machine chamber.

[0003] One such outdoor unit has a first electrical component support section arranged along the front surface of the housing and a second electrical component support section arranged along the side surface of the housing, which are arranged side by side, and in which piping and a compressor are arranged in the internal space surrounded by the first and second electrical component support sections at the rear surface of the housing (Patent Document 1). With this outdoor unit, by removing only the side panel arranged on the side surface of the housing and removing and moving the second electrical component support section, it becomes possible to easily attach and detach parts inside the machinery compartment from the side surface of the housing, improving the ease of work in maintenance and the like. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-55593 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the structure of Patent Document 1, when the second electrical equipment support part is moved, the wiring (hereinafter referred to as the cable) connected to the second electrical equipment support part moves with the second electrical equipment support part. Therefore, when the second electrical equipment support part is returned to its original position, this cable may come close to a cable through which electromagnetic noise is propagating, for example, from a switching power supply supported by the first electrical equipment support part. As a result, electromagnetic noise may be superimposed on the cable that moves with the second electrical equipment support part, and this electromagnetic noise may leak from this cable to the outside of the outdoor unit. Furthermore, electromagnetic noise propagated through the cable that moves with the second electrical equipment support part may be superimposed on other cables installed in the machine room, causing the outdoor unit or the like to malfunction.

[0006] The disclosed technology has been developed in consideration of the above, and aims to provide an outdoor unit for an air conditioning system that ensures workability within the machine room and prevents electromagnetic noise from being superimposed on cables connected to the electrical equipment support part. [Means for solving the problem]

[0007] One aspect of an outdoor unit for an air conditioner disclosed herein includes a housing in which a heat exchange chamber containing a heat exchanger and a machinery chamber containing components constituting a refrigerant circuit are separated by a partition. The machinery chamber contains a power terminal block connected to an external AC power source, a first high-voltage cable having one end connected to the power terminal block, a first circuit board connected to the other end of the first high-voltage cable and receiving high voltage from the external AC power source via the power terminal block and the first high-voltage cable, a first electrical component support arranged along a first surface of the housing to support the first circuit board, and a second electrical component support arranged along a second surface of the housing adjacent to the first surface to support the power terminal block. An end of the first electrical component support facing the second surface is adjacent to an end of the second electrical component support facing the first surface. At least one of the first electrical component support and the second electrical component support is movably mounted around a movement axis along the first and second surfaces. The first board has a first connection portion to which the first high-power cable is connected, and at least one of the first connection portion on the first board and the power terminal block on the second electrical component support is located on the moving axis side. [Effects of the Invention]

[0008] According to one aspect of the outdoor unit for an air conditioner disclosed in the present application, workability in the machine room is ensured, and electromagnetic noise is prevented from being superimposed on cables connected to an electrical component support portion. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view schematically showing an outdoor unit of the embodiment. [Figure 2] FIG. 2 is a perspective view schematically showing a machine chamber of the outdoor unit of the embodiment. [Figure 3] FIG. 3 is a view of the first electrical component support portion and the second electrical component support portion in the outdoor unit of the embodiment, viewed from the front side of the housing. [Figure 4] FIG. 4 is a view of the first electrical component support portion and the second electrical component support portion in the outdoor unit of the embodiment, viewed from the rear side of the housing. [Figure 5] FIG. 5 is a perspective view showing a state in which the second electrical component support portion is located at the closed position in the embodiment. [Figure 6] FIG. 6 is a perspective view showing a state in which the second electrical component support portion is located at the closed position in the embodiment. [Figure 7] FIG. 7 is a perspective view showing a state in which the second electrical component support portion is located at the open position in the embodiment. [Figure 8] FIG. 8 is an enlarged view showing a cutout portion of the first electrical component support portion in the embodiment. [Figure 9] FIG. 9 is a diagram of the first electrical component support portion and the second electrical component support portion in the embodiment as viewed from above. [Figure 10] FIG. 10 is a view of the first electrical component support portion in the embodiment as viewed from a direction perpendicular to the front surface portion. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the outdoor unit of the air conditioner disclosed in the present application will be described in detail with reference to the drawings. Note that the outdoor unit of the air conditioner disclosed in the present application is not limited to the following embodiments. [Example]

[0011] (Outdoor unit) FIG. 1 is a perspective view schematically showing an outdoor unit of an embodiment. The outdoor unit 1 of the embodiment is, as an example, connected to a plurality of indoor units 2 that constitute an air conditioning system, forming a so-called multi-air conditioner. As shown in FIG. 1, the outdoor unit 1 includes a heat exchanger 4, a compressor 6, and a housing 7 that houses the heat exchanger 4 and the compressor 6. The housing 7 has a heat exchange chamber 8 in which the heat exchanger 4 is provided, and a machine chamber 9 in which various parts such as the compressor 6 and piping 18 that constitute a refrigerant circuit through which a refrigerant circulates are provided, and the heat exchange chamber 8 and the machine chamber 9 are separated by a partition plate 10. A fan 5 is provided in the heat exchange chamber 8 to take in outside air and blow it to the heat exchanger 4.

[0012] The housing 7 is formed in the shape of a rectangular parallelepiped box. In the drawings, the width direction of the housing 7 is indicated as the X direction, the depth direction of the housing 7 as the Y direction, and the height direction of the housing 7 as the Z direction. The housing 7 has a front surface 7F that is a first surface portion and that extends along the XZ plane, and a side surface 7S that is a second surface portion and that extends along the YZ plane, and a rear surface 7R that faces the front surface 7F.

[0013] For example, a front surface 7F of the housing 7 is provided with an outlet 7a for discharging air that has passed through the heat exchanger 4. A detachable side panel 7b is provided on a side surface 7S of the housing 7, and maintenance of the machine room 9 can be performed by removing only the side panel 7b from the housing 7. An intake port (not shown) for taking air into the heat exchanger 4 is provided on a rear surface 7R of the housing 7, etc.

[0014] (mechanical room) Fig. 2 is a perspective view schematically showing the machine chamber 9 of the outdoor unit 1 of the embodiment. Fig. 3 is a view of the first electrical component support portion 16 and the second electrical component support portion 17 in the outdoor unit 1 of the embodiment, seen from the front part 7F side of the housing 7. Fig. 4 is a view of the first electrical component support portion 16 and the second electrical component support portion 17 in the outdoor unit 1 of the embodiment, seen from the rear part 7R side of the housing 7.

[0015] As shown in Figures 2, 3 and 4, the machine room 9 contains a power supply terminal block 12 connected to an external AC power supply 11, a first high-voltage cable 14 having one end connected to the power supply terminal block 12, a first board 15 to which the other end of the first high-voltage cable 14 is connected and to which high voltage is supplied from the external AC power supply 11 via the power supply terminal block 12 and the first high-voltage cable 14, a first electrical equipment support 16 that supports the first board 15, and a second electrical equipment support 17 that supports the power supply terminal block 12.

[0016] (First electrical equipment support portion and second electrical equipment support portion) The first electrical component support 16 is disposed along the front surface 7F of the housing 7. The second electrical component support 17 is disposed along the side surface 7S of the housing 7 adjacent to the front surface 7F. An end 16a of the first electrical component support 16 on the side surface 7S side and an end 17a of the second electrical component support 17 on the front surface 7F side are disposed adjacent to each other.

[0017] An end 17a of the second electrical component support portion 17 is provided so as to be movable around a movement axis A that is aligned with an end 16a of the first electrical component support portion 16. The movement axis A is provided along the front surface 7F and side surface 7S of the housing 7, that is, along the Z direction that is the height direction of the housing 7. Details of the movement axis A will be described later.

[0018] (Closed and open positions of the first electrical equipment support) Fig. 5 is a perspective view showing the second electrical component support portion 17 in the closed position P1 in this embodiment. Fig. 6 is a perspective view showing the second electrical component support portion 17 in the closed position P1 in this embodiment. Fig. 7 is a perspective view showing the second electrical component support portion 17 in the open position P2 in this embodiment.

[0019] 5, 6, and 7, when the machine chamber 9 is viewed from the side surface 7S of the housing 7, the second electrical component support 17 moves to a closed position P1 (see FIGS. 5 and 6) where it closes the internal space B surrounded by the first electrical component support 16 and the second electrical component support 17 from the side surface 7S, and to an open position P2 (see FIGS. 3 and 7) where an end 17b of the second electrical component support 17 on the opposite side to the movement axis A is positioned outside the internal space B and away from the internal space B, opening the side surface 7S side of the internal space B. The internal space B is located between the first electrical component support 16 and the rear surface 7R of the housing 7, and contains components such as the compressor 6 and piping 18 connected to the compressor 6.

[0020] As an example, the second electrical component support portion 17 is aligned along the side surface 7S when positioned at the closed position P1, and aligned along the front surface 7F when positioned at the open position P2. When the second electrical component support portion 17 is viewed from the side surface 7S, in the closed position P1, the second electrical component support portion 17 is positioned so as to cover a portion of the interior space B. The embodiment is not limited to a structure in which the second electrical component support portion 17 moves from the closed position P1 to the open position P2, i.e., a structure in which the second electrical component support portion 17 moves approximately 90 degrees around the movement axis A from the closed position P1 to the open position P2, but may also be a structure in which the second electrical component support portion 17 moves approximately 180 degrees around the movement axis A from the closed position P1, for example.

[0021] In this way, by providing the second electrical equipment support part 17 so that it can move between the closed position P1 and the open position P2, when performing maintenance work in the internal space B of the machine room 9 from the side part 7S of the housing 7, it is possible to remove only the side panel 7b from the side part 7S and easily move the second electrical equipment support part 17 that covers the internal space B, thereby making it easy to access the internal space B. This makes it easy to perform maintenance work in the internal space B.

[0022] (moving axis) In the present disclosure, as an example, the movement axis A refers to a virtual axis passing through protruding claws 27a (see FIGS. 5, 6, and 8) of a pair of engagement pieces 27, which will be described later, formed on the end 17a of the second electrical component support portion 17. However, without being limited to this structure, a rotation shaft (not shown), which is a component, may be provided on the end 17a of the second electrical component support portion 17 as the movement axis A, and the end 17a of the second electrical component support portion 17 may be rotatably supported on the end 16a of the first electrical component support portion 16 via the rotation shaft. Furthermore, the movement axis A is not limited to a structure in which it is provided on the end 17a of the second electrical component support portion 17, but may also be provided on the end 16a of the first electrical component support portion 16.

[0023] Furthermore, in the embodiment, the movement axis A is provided at the end 17a of the second electrical component support portion 17, but the position of the movement axis A in the Y direction along the side surface portion 7S is not limited. For example, the movement axis A may be provided at the center of the second electrical component support portion 17 in the Y direction, and a part of the second electrical component support portion 17 on the rear surface portion 7R side may move partially with respect to the movement axis A. In other words, it is sufficient that at least a part of the second electrical component support portion 17 is moved around the movement axis A.

[0024] In the present disclosure, forms in which the end 17a of the second electrical equipment support part 17 is arranged to be movable around the movement axis A include, for example, a form in which the end 17a of the second electrical equipment support part 17 is temporarily detached from the end 16a of the first electrical equipment support part 16, the second electrical equipment support part 17 is moved around the movement axis A, and then the end 17a of the second electrical equipment support part 17 is attached to the end 16a of the first electrical equipment support part 16, and a form in which the end 17a of the second electrical equipment support part 17 is rotated around the movement axis A relative to the end 16a of the first electrical equipment support part 16.

[0025] The first electrical equipment support portion 16 has a first support frame 21 formed from a metal plate, and an upper end surface 21a of the first support frame 21 is fixed to the partition plate 10 along the X direction. The second electrical equipment support portion 17 has a second support frame 22 formed from a metal plate, and the second support frame 22 is supported so as to be movable around a movement axis A relative to the first support frame 21.

[0026] Fig. 8 is an enlarged view showing the first notched grooves 26 of the first electrical component support part 16 in this embodiment. As shown in Fig. 5, 6 and 8, the end part 16a of the first electrical component support part 16 formed by the first support frame 21 is formed with a set of first notched grooves 26 spaced apart in the Z direction, which is the up-down direction, as a rotation support part that allows the end part 17a of the second electrical component support part 17 to rotate about the movement axis A and detachably supports the second electrical component support part 17.

[0027] 5 and 6, a pair of engagement pieces 27 that engage with the first notched grooves 26 of the end 16a of the first electrical equipment support part 16 are formed at an end 17a of the second electrical equipment support part 17 formed by the second support frame 22, with the engagement pieces 27 spaced apart in the Z direction, which is the up-down direction. The engagement pieces 27 extend toward the end 16a of the first electrical equipment support part 16, and protruding claws 27a that engage with the first notched grooves 26 are formed at the tips of the engagement pieces 27.

[0028] When the second electrical equipment support portion 17 is in the closed position P1 or the open position P2, the protruding claws 27a of the engagement pieces 27 are engaged with the first notched grooves 26 in the end portions 16a of the first electrical equipment support portion 16. In this embodiment, the second support frame 22 of the second electrical equipment support portion 17 is fixed to the inside of the machine chamber 9 by fixing screws or the like (not shown) when it is located in the closed position P1.

[0029] 8, the end 16a of the first electrical component support portion 16 is provided with a second notch groove 28 at a position adjacent to the first notch groove 26, which serves as a fixing support portion that supports the second electrical component support portion 17 removed from the first notch groove 26 and fixes it in the open position P2. The second notch groove 28 restricts movement of the second electrical component support portion 17 located in the open position P2 around the movement axis A by engaging the engaging piece 27 on the end 17a of the second electrical component support portion 17 moved to the open position P2. This makes it possible to easily fix the second electrical component support portion 17 in the open position P2. This prevents the second electrical component support portion 17 from accidentally moving from the open position P2 to the closed position P1, allowing maintenance work in the interior space B to be performed stably. In addition, the engagement piece 27 of the second electrical equipment support portion 17 may engage with the first notch groove 26 without using the second notch groove 28 when the second electrical equipment support portion 17 is moved from the closed position P1 to the open position P2.

[0030] The first board 15 provided in the first electrical equipment support portion 16 has a control circuit that controls the outdoor unit 1, and as shown in Figures 2 and 3, on the side of the first electrical equipment support portion 16 facing the front portion 7F, a mounting surface 15a on which various electrical components described below are mounted is arranged along the front portion 7F.

[0031] (Connection structure of first high-voltage cable) As shown in FIGS. 3, 5, and 6, first board 15 has first connection portion 15c, which is a connection terminal to which first high-power cable 14 is connected. First connection portion 15c is located on the movement axis A side of mounting surface 15a of first board 15 in the X direction along front surface 7F. Being located on the movement axis A side of first board 15 refers to being located at end 15b of first board 15 that is closer to movement axis A than the center of first board 15 in the X direction. This shortens the length of first high-power cable 14, thereby shortening the portion of first high-power cable 14 that moves with second electrical component support 17 when second electrical component support 17 is moved around movement axis A. This prevents first high-power cable 14 from being routed in an unintended manner when second electrical component support 17 is moved and fixed in closed position P1. This prevents first high power cable 14 from being placed close to electrical components that emit electromagnetic noise or other cables that propagate electromagnetic noise (for example, cables connected to compressor 6). This prevents electromagnetic noise from being superimposed on first high power cable 14 from other cables. Furthermore, by preventing electromagnetic noise from being superimposed on first high power cable 14, it is possible to prevent electromagnetic noise from being propagated from first high power cable 14 to other cables.

[0032] Although not shown, first connection portion 15c may be located on the side of first circuit board 15 that faces movement axis A, and power terminal block 12 on second electrical component support portion 17 may be located on the side of movement axis A in the Y direction along side surface portion 7S. This further shortens the length of first high power cable 14, thereby further preventing first high power cable 14, which moves along with second electrical component support portion 17 that moves around movement axis A, from coming close to electrical components that emit electromagnetic noise or other cables that propagate electromagnetic noise. In other words, by locating at least one of first connection portion 15c on first circuit board 15 and power terminal block 12 on second electrical component support portion 17 on the side of movement axis A, it is possible to suppress electromagnetic noise from being superimposed on first high power cable 14 and from propagating electromagnetic noise from first high power cable 14 to other cables.

[0033] 4, the first electrical component support portion 16 has a step-down portion 31 that steps down the high voltage supplied from the external AC power supply 11 to the first board 15. As shown in FIGS. 3 and 5, a high-voltage circuit 33A that receives high voltage from the external AC power supply 11 via the first high-voltage cable 14 from the external AC power supply 11 is disposed on the mounting surface 15a of the first board 15 on the movement axis A side in the X direction along the front surface 7F. A low-voltage circuit 33B that receives low voltage stepped down by the step-down portion 31 is disposed on the mounting surface 15a of the first board 15 on the opposite side from the movement axis A side. In other words, the high-voltage circuit 33A and the low-voltage circuit 33B are disposed side by side on the mounting surface 15a of the first board 15 in the X direction along the front surface 7F.

[0034] 3, a first connection portion 15c to which first high-power cable 14 is connected is provided at an end portion 15b of high-power circuit 33A of first substrate 15 on the movement axis A side. Similarly, a fourth connection portion 15e to which second high-power cable 38 (described later) is connected is provided at an end portion of high-power circuit 33A on the movement axis A side. Electrical components mounted on high-power circuit 33A include X capacitor 33a, Y capacitor 33b, common mode choke coil 33c, arrester 33d, varistor 33e, and fuse 33f that configure outdoor unit power supply filter circuit F1 and indoor unit power supply filter circuit F2.

[0035] A third connection part 15d is provided at the center of the low-voltage circuit 33B to which a low-voltage cable 37 (described later) is connected. Electrical components such as an IC (Integrated Circuit) chip 33g, a diode 33h, and a transistor 33k are mounted on the low-voltage circuit 33B.

[0036] As shown in Figures 3 and 5, the second electrical equipment support portion 17 has a second board 35 to which low voltage is supplied from the low-voltage circuit 33B of the first board 15, and a plurality of indoor unit terminal blocks 36 that supply power to each indoor unit 2.

[0037] The second board 35 is a maintenance board having an adjustment unit 35a for performing various settings and adjustments when performing various maintenance work on the outdoor unit 1, for example. The second electrical component support 17 has an upper section 17U, a middle section 17M, and a lower section 17L that are aligned in the Z direction, which is the up-down direction. The support surfaces of the upper section 17U, the middle section 17M, and the lower section 17L are inclined so that the side opposite to the internal space B is positioned lower than the internal space B when the second electrical component support 17 is in the closed position P1, allowing a low-voltage cable 37 (described later) connected to the second board 35 to be smoothly pulled out from above the second electrical component support 17.

[0038] The second board 35 is disposed on the movement axis A side of the upper stage 17U of the second electrical component support 17. The power terminal block 12 of the second electrical component support 17 is disposed on the opposite side of the upper stage 17U of the second electrical component support 17 from the movement axis A side, that is, on the rear surface 7R side when the second electrical component support 17 is located in the closed position P1.

[0039] This ensures a large distance between power terminal block 12 and first board 15 of first electrical component support 16. First high-power cable 14, which is connected to power terminal block 12 for connecting to external AC power source 11, generally has a larger outer diameter and is less flexible and difficult to route than low-power cables 37 (described later) and the like due to its larger current value. Therefore, even when a less flexible first high-power cable 14 is used, ensuring a long distance to first board 15 allows first high-power cable 14 to bend more gently when routing first high-power cable 14 around obstacles, thereby reducing the force applied to first high-power cable 14. This facilitates the routing and connection of first high-power cable 14. Furthermore, reducing the force applied to first high-power cable 14 when second electrical component support 17 is moved prevents damage to first high-power cable 14.

[0040] The indoor unit terminal blocks 36 are arranged on the middle section 17M and the lower section 17L of the second electrical component support section 17. The indoor unit terminal blocks 36 are connected to the high-voltage circuit 33A of the first board 15 via a second high-voltage cable 38 (described later). A supply cable (not shown) is connected to the indoor unit terminal blocks 36, and the supply cable is pulled out from the second electrical component support section 17 downward on the side surface section 7S side.

[0041] Also housed within the machine room 9 are a low-voltage cable 37 that connects the low-voltage circuit 33B of the first board 15 to the second board 35, and a second high-voltage cable 38 that transmits high voltage from the first board 15 to the second electrical equipment support section 17.

[0042] One end of the low-voltage cable 37 is connected to the third connection portion 15d, which is a connection terminal provided in the center of the low-voltage circuit 33B of the first board 15, and the other end is connected to the second connection portion 35c on the second board 35, which will be described later.

[0043] Generally, low-voltage cables 37 have a smaller outer diameter and tend to be more flexible than the first high-voltage cables 14 and the like because they have a smaller current value. Furthermore, when the second electrical component support 17 is moved around the movement axis A, the weak-voltage cable 37 connected to the second electrical component support 17 moves more significantly as the end of the cable connected to the second electrical component support 17 moves away from the movement axis A. Taking these points into consideration, in this embodiment, the weak-voltage circuit 33B to which the flexible low-voltage cable 37 is connected is positioned farther from the movement axis A on the first board 15, i.e., on the opposite side from the movement axis A. This allows the second electrical component support 17 to move smoothly without being hindered by the weak-voltage cable 37, thereby facilitating access to the interior space B. This improves the ease of performing maintenance in the interior space B. In addition, by arranging the low-voltage circuit 33B on the first board 15 at a position far from the movement axis A, space is secured on the movement axis A side, and the high-voltage circuit 33A, to which the first high-voltage cable 14, which is difficult to route, is connected, can be arranged on the movement axis A side.

[0044] The second board 35 has a second connection portion 35c which is a connection terminal to which the low-voltage cable 37 is connected. The second connection portion 35c is located at the upper end portion on the internal space B side of the second board 35 which is supported by the upper stage portion 17U of the second electric component support portion 17. Therefore, the low-voltage cable 37 which is drawn out from above the first electric component support portion 16 is routed up to above the second electric component support portion 17 and can be easily connected to the second connection portion 35c of the second board 35.

[0045] (Second high-voltage cable connection structure) One end of second high-power cable 38 is connected to fourth connection part 15e, which is a connection terminal provided at the end of high-power circuit 33A of first board 15 on the movement axis A side, and the other end is connected to each indoor unit terminal block 36 of second electrical component support part 17. Second high-power cable 38 in this embodiment has a smaller outer diameter and tends to bend more easily than first high-power cable 14 because its current value is smaller.

[0046] In the connection structure for the second high-power cable 38, similarly to the connection structure for the first high-power cable 14 described above, the fourth connection portion 15e is located on the movement axis A side of the mounting surface 15a of the first circuit board 15 in the X direction along the front surface 7F. This shortens the length of the second high-power cable 38, thereby shortening the portion of the second high-power cable 38 that moves with the second electrical component support 17 when the second electrical component support 17 moves around the movement axis A. This prevents the second high-power cable 38 from being routed in an unintended manner when the second electrical component support 17 is moved and fixed in the closed position P1. This prevents the second high-power cable 38 from coming close to electrical components that emit electromagnetic noise or other cables that propagate electromagnetic noise (e.g., a cable connected to the compressor 6). This prevents electromagnetic noise from being superimposed on the second high-power cable 38 from other cables. Furthermore, by suppressing the superposition of electromagnetic noise on second high-power cable 38, the propagation of electromagnetic noise from second high-power cable 38 to other cables can be suppressed.

[0047] 4, the step-down unit 31 of the first electrical equipment support portion 16 is mounted on a third board 41 provided on the interior space B side of the first electrical equipment support portion 16, i.e., on the rear surface 7R side, along the rear surface 7R. The third board 41 is a sub-control board (e.g., a power board) for controlling the outdoor unit 1 together with the first board 15, and the third board 41 may be formed integrally with the first board 15. The third board 41 is mounted with electrical components that constitute the step-down unit 31, which is a switching power supply circuit that steps down the high voltage supplied from the first board 15, the conversion unit 32 that converts the high voltage supplied from the first board 15 from AC to DC, and the drive circuit 33 that drives the compressor 6.

[0048] Furthermore, a cooling device 39 that cools heat-generating components such as power semiconductors (not shown) included in the third board 41 is provided on the first electrical component support 16 on the side facing the third board 41, i.e., on the side facing the internal space B. The cooling device 39 has a heat dissipation member 40 that is thermally connected to the heat-generating components and fixed along the Z direction of the first support frame 21 of the first electrical component support 16. A cooling pipe 19 included in the refrigerant circuit is connected to the heat dissipation member 40 using fixing brackets 20, and the refrigerant flowing through the cooling pipe 19 removes heat from the heat dissipation member 40, thereby cooling the heat-generating components. For example, during maintenance of the outdoor unit 1, maintenance work is performed in the internal space B of the machine chamber 9 to attach and detach the cooling pipe 19, which is an example of a component that configures the refrigerant circuit, to and from the heat dissipation member 40.

[0049] (Fixing each cable) Fig. 9 is a top view of the first electrical component support portion 16 and the second electrical component support portion 17 in this embodiment. As shown in Figs. 3, 4, and 9, the first electrical component support portion 16 has a plurality of fixing portions 43 (43A to 43D) to which the first high-voltage cable 14, the low-voltage cable 37, and the second high-voltage cable 38 are respectively fixed. For example, a cable tie is used as the fixing portions 43, and the cables are fixed in a bundled state to the first support frame 21 that constitutes the first electrical component support portion 16.

[0050] As an example, the fixing portion 43A for the low-voltage cable is fixed to the upper end surface 21a of the first support frame 21 of the first electrical component support portion 16. The low-voltage cable 37, which is drawn upward from the third connection portion 15d of the low-voltage circuit 33B of the first board 15, is arranged along the upper end surface 21a of the second electrical component support portion 17, as shown in Fig. 9, and is fixed by the two fixing portions 43A for the low-voltage cable. This prevents the low-voltage cable 37 from protruding from the first electrical component support portion 16 into the internal space B when the second electrical component support portion 17 moves around the movement axis A.

[0051] 10 is a view of the first electrical component support portion 16 in the embodiment as viewed from the Y direction perpendicular to the front surface portion 7F. As shown in FIG. 10, in the internal space B surrounded by the first electrical component support portion 16 and the second electrical component support portion 17, piping 18 constituting the refrigerant circuit is provided and extends above the first electrical component support portion 16.

[0052] When viewing the extension portion 18a of the piping 18 located above the upper end of the first electrical equipment support portion 16 from a direction perpendicular to the front portion 7F of the housing 7, within the region R where the extension portion 18a is located, the low-voltage cable 37 is arranged so that the portion 37b extending from the fixing portion 43A for the low-voltage cable described later to the low-voltage circuit 33B of the first board 15 does not enter the internal space B from the first electrical equipment support portion 16.

[0053] Region R in which extension portion 18a of pipe 18 is located corresponds to the projection region of extension portion 18a projected onto front surface 7F, i.e., the XZ plane. In other words, portion 37b of low-voltage cable 37 is routed within region R in internal space B so as not to protrude from first electrical component support portion 16. Specifically, the position of low-voltage cable fixing portion 43A is set so that portion 37b of low-voltage cable 37 is brought close to first board 15 and upper end surface 21a of first support frame 21 and does not hang down from first electrical component support portion 16, and the length of low-voltage cable 37 is set so that portion 37b of low-voltage cable 37 is not too long compared to the distance between low-voltage cable fixing portion 43A and first board 15.

[0054] This prevents the portion 37b of the low-voltage cable 37 from coming into contact with the extension portion 18a of the pipe 18 located in the region R on the internal space B side from the first electrical equipment support portion 16, causing damage to the coating material of the low-voltage cable 37 due to the heat of the pipe 18, and prevents water droplets condensing on the pipe 18 from traveling up the low-voltage cable 37 to the first board 15 or the second board 35 and damaging electronic circuits, etc.

[0055] Additionally, a common fixing portion 43B for fixing the low-voltage cable 37 and the second high-voltage cable 38 is disposed on the second support frame 22 of the second electrical component support portion 17. The low-voltage cable 37 is disposed along the upper end of the second support frame 22 of the second electrical component support portion 17. The common fixing portion 43B is disposed on the second electrical component support portion 17 above the first board 15 of the first electrical component support portion 16 and on the movement axis A side of the second connection portion 35c of the second board 35.

[0056] By fixing the low-voltage cable 37 by the shared fixing portion 43B arranged in this manner, when the second electrical component support portion 17 moves around the movement axis A, the portions of the low-voltage cable 37 and the second high-voltage cable 38 near the movement axis A, which are more flexible than the first high-voltage cable 14, are prevented from moving from the first electrical component support portion 16 toward the interior space B. As the second electrical component support portion 17 moves from the open position P2 to the closed position P1, the shared fixing portion 43B moves toward the front surface 7F in the Y direction, so that the portion of the low-voltage cable 37 from the shared fixing portion 43B to the fixing portion 43A for the low-voltage cable is more likely to bend toward the front surface 7F. This prevents the low-voltage cable 37 from bending so as to protrude into the interior space B, preventing the low-voltage cable 37 from coming into contact with the pipes 18 arranged in the interior space B and damaging the covering material of the low-voltage cable 37 due to the heat of the pipes 18, and preventing water droplets condensing on the pipes 18 from traveling along the low-voltage cable 37 and reaching the first board 15 or the second board 35 and damaging the electronic circuits, etc. Furthermore, by providing the outdoor unit 1 with the shared fixing part 43B, the number of fixing parts 43 used can be reduced.

[0057] In addition, the low-voltage cable fixing portion 43A and the common fixing portion 43B to which the low-voltage cable 37 is fixed are not limited to the arrangement described above, and it is sufficient that the portion 37b of the low-voltage cable 37 is arranged in at least one of the first electrical equipment support portion 16 and the second electrical equipment support portion 17 within the region R in the internal space B so that it does not protrude from the first electrical equipment support portion 16.

[0058] 3 and 5, the machine room 9 is provided with a removal unit 46 that removes electromagnetic noise from the current flowing through the second high-power cable 38. The second high-power cable 38 is drawn out from the fourth connection portion 15e of the high-power circuit 33A of the first board 15 and extends upward along the movement axis A from the end portion 16a of the first electrical component support portion 16 on the movement axis A side.

[0059] The remover 46 is fixed to the end 16a of the first electrical component support 16 on the movement axis A side by a fixing portion 43C for the second high-power cable. The remover 46 is provided on the second high-power cable 38 near the upper end of the end 16a of the first electrical component support 16. The remover 46 is also located closer to the fourth connection portion 15e of the high-power circuit 33A than the shared fixing portion 43B that fixes both the second high-power cable 38 and the low-power cable 37. In other words, the second high-power cable 38 is routed upward from the fourth connection portion 15e, passes through the remover 46, and is fixed by the shared fixing portion 43B. The remover 46 is, for example, a noise filter member such as a ferrite core.

[0060] Here, when second electrical component support 17 moves about movement axis A, the portion of second high power cable 38 that moves with second electrical component support 17 is mainly the portion from shared fixing portion 43B to indoor unit terminal block 36. Furthermore, current flows from fourth connection portion 15e of first circuit board 15 toward indoor unit terminal block 36. Therefore, in the portion of second high power cable 38 that moves with second electrical component support 17 when second electrical component support 17 moves about movement axis A, electromagnetic noise is removed by removal portion 46. Therefore, even if the moving second high power cable 38 comes close to another cable, the electromagnetic noise propagating through second high power cable 38 can be prevented from being superimposed on the other cable.

[0061] As described above, the machine room 9 is provided with a removal unit 46 that removes electromagnetic noise from the current flowing through the first high-power cable 14. The first high-power cable 14 is pulled out from the second electrical component support 17 and extends downward along the movement axis A from the end 16a of the first electrical component support 16 on the movement axis A side.

[0062] The remover 46 is fixed to the end 16a of the first electrical component support 16 on the movement axis A side by a first high-power cable fixing part 43D. The remover 46 is disposed on the first high-power cable 14 above the upper end of the end 16a of the first electrical component support 16 on the movement axis A side.

[0063] As a result, even if there is slack in the length of the first high-voltage cable 14, the first high-voltage cable 14 is fixed to the moving axis A side, so when the second electrical equipment support part 17 is moved around the moving axis A from the open position P2 to the closed position P1, the first high-voltage cable 14 is prevented from moving toward the internal space B side, and electromagnetic noise propagated from the external AC power source 11 to the first high-voltage cable 14 is prevented from propagating to the high-voltage circuit 33A of the first board 15.

[0064] (Current flow in the first electrical component support portion and the second electrical component support portion) The flow of current in the first electrical component support portion 16 and the second electrical component support portion 17 configured as described above will now be described. As shown in Fig. 3, current supplied from the external AC power supply 11 is supplied to the high-power circuit 33A on the first board 15 of the first electrical component support portion 16 via the power supply terminal block 12 of the second electrical component support portion 17 and the first high-power cable 14. The current supplied to the high-power circuit 33A is sent to the outdoor unit power supply filter circuit F1 and the indoor unit power supply filter circuit F2.

[0065] As shown in Fig. 4, the current that passes through the outdoor unit power supply filter circuit F1 is supplied to a third board 41 provided on the back side (internal space B side) of the first board 15, and is sent to the step-down unit 31 (switching power supply circuit) and the conversion unit 32. As shown in Figs. 3 and 4, the current that passes through the indoor unit power supply filter circuit F2 is sent via a second high-voltage cable 38 to the indoor unit terminal block 36 of the second electrical component support 17, and is supplied to the indoor unit 2 via the indoor unit terminal block 36.

[0066] In the voltage step-down unit 31, the voltage is stepped down, for example, to two voltages, and each voltage is supplied to the low-voltage circuit 33B of the first board 15. As shown in Fig. 3, the current flowing due to the two types of voltages supplied to the low-voltage circuit 33B is sent to the second board 35 of the second electrical component support unit 17 via a low-voltage cable 37. As shown in Fig. 4, in the conversion unit 32, the AC is converted to DC and the voltage is boosted, and the current flowing due to the boosted voltage is sent to the compressor 6 via the drive circuit 33.

[0067] (Effects of the Example) As described above, in the outdoor unit 1 of the embodiment, the end 16a of the first electrical component support 16 on the side surface 7S side and the end 17a of the second electrical component support 17 on the front surface 7F side are arranged adjacent to each other in the machine room 9, and the second electrical component support 17 is provided to be movable around the movement axis A along the front surface 7F and the side surface 7S. The first board 15 supported by the first electrical component support 16 has a first connection portion 15c to which the first high-power cable 14 is connected, and the position of the first connection portion 15c on the first board 15 is located at the end 15b on the movement axis A side of the first board 15. In this way, in the embodiment, the end 17a of the second electrical component support 17 is movable around the movement axis A relative to the end 16a of the first electrical component support 16, thereby allowing easy access to the internal space B, and ensuring ease of maintenance work for attaching and detaching parts such as the cooling piping 19 in the internal space B of the machine room 9. Additionally, in the embodiment, first connection portion 15c of first board 15 is positioned at end portion 15b on the movement axis A side of first board 15, which makes it possible to shorten first high power cable 14 connected to second electrical component support portion 17, thereby preventing first high power cable 14, which moves together with second electrical component support portion 17, from coming close to other cables through which electromagnetic noise propagates, thereby suppressing superimposition of electromagnetic noise on first high power cable 14. Furthermore, suppressing superimposition of electromagnetic noise on first high power cable 14 also suppresses propagation of electromagnetic noise from first high power cable 14 to other cables.

[0068] Furthermore, in the outdoor unit 1 of the embodiment, a high-voltage circuit 33A to which high voltage is supplied is arranged on the first board 15 of the first electrical component support 16, in the X direction along the front surface 7F, on the side of the movement axis A, and a low-voltage circuit 33B to which low voltage is supplied is arranged on the side opposite the movement axis A. The second electrical component support 17 has a second board 35 to which low voltage is supplied from the low-voltage circuit 33B, and a low-voltage cable 37 connecting the low-voltage circuit 33B of the first board 15 to the second board 35 is provided in the machine room 9. Thus, by arranging the low-voltage circuit 33B to which the flexible low-voltage cable 37 is connected at a position on the first board 15 far from the movement axis A, i.e., on the side opposite the movement axis A, the movement of the second electrical component support 17 is not hindered by the low-voltage cable 37, and the second electrical component support 17 can be moved smoothly, improving the ease of maintenance work in the interior space B. In addition, by arranging the low-voltage circuit 33B on the first board 15 at a position far from the movement axis A, space is secured on the movement axis A side, and the high-voltage circuit 33A, to which the first high-voltage cable 14, which is difficult to route, is connected, can be arranged on the movement axis A side.

[0069] Furthermore, in the outdoor unit 1 of the embodiment, when the extending portion 18a of the piping 18 located above the upper end of the first electrical component support 16 (upper end surface 21a of the first support frame 21) is viewed from the Y direction perpendicular to the front surface 7F, within region R where the extending portion 18a is located, portion 37b of the low-voltage cable 37 extending from fixing portion 43A for the low-voltage cable to the first board 15 is arranged not to enter from the first electrical component support 16 into the internal space B. This prevents portion 37b of the low-voltage cable 37 from coming into contact with extending portion 18a of the piping 18 located in region R on the internal space B side from the first electrical component support 16, which could cause damage to the coating of the low-voltage cable 37 due to heat from the piping 18, and prevents water droplets condensed on the piping 18 from traveling along the low-voltage cable 37 to reach the first board 15 or the second board 35 and damaging electronic circuits, etc.

[0070] Furthermore, in the outdoor unit 1 of the embodiment, the second board 35 of the second electrical component support part 17 has a second connection part 35c to which the low-voltage cable 37 is connected, and the low-voltage cable 37 is arranged along the upper end of the second electrical component support part 17. The shared fixing part 43B is arranged in the second electrical component support part 17 above the first board 15 of the first electrical component support part 16 and on the movement axis A side of the second connection part 35c of the second board 35. This prevents the parts of the low-voltage cable 37 and the second high-voltage cable 38, which are more flexible than the first high-voltage cable 14, near the movement axis A from moving from the first electrical component support part 16 towards the interior space B when the second electrical component support part 17 moves around the movement axis A. As the second electrical component support portion 17 moves from the open position P2 to the closed position P1, the shared fixing portion 43B moves toward the front surface 7F in the Y direction, so that the portion of the low-voltage cable 37 from the shared fixing portion 43B to the fixing portion 43A for the low-voltage cable is more likely to bend toward the front surface 7F. This prevents the low-voltage cable 37 from bending so as to protrude into the internal space B, thereby preventing the low-voltage cable 37 from coming into contact with the piping 18 arranged in the internal space B and damaging the coating of the low-voltage cable 37 due to heat from the piping 18, and preventing water droplets condensing on the piping 18 from traveling along the low-voltage cable 37 to the first board 15 or the second board 35 and damaging electronic circuits, etc.

[0071] Furthermore, in the second electrical component support 17 of the outdoor unit 1 of the embodiment, the power terminal block 12 is disposed at the end 17b of the second electrical component support 17 on the side opposite to the movement axis C. This ensures a large distance between the power terminal block 12 and the first board 15 of the first electrical component support 16. Therefore, even when a first high-power cable 14 that is difficult to bend is used, ensuring a long distance to the first board 15 makes it possible to make gentler bends in the first high-power cable 14 when it is necessary to route the first high-power cable 14 around obstacles, facilitating the routing and connection of the first high-power cable 14. In addition, the force applied to the first high-power cable 14 when the second electrical component support 17 is moved is reduced, preventing damage to the first high-power cable 14.

[0072] Furthermore, in the outdoor unit 1 of the embodiment, the machine room 9 is provided with a second high power cable 38 that transmits high voltage from the first board 15 to the second electrical component support 17, and a removal unit 46 that is attached to the second high power cable 38 and removes electromagnetic noise from the current flowing through the second high power cable 38. The removal unit 46 is fixed to the end 16a of the first electrical component support 16 on the movement axis A side, and the second high power cable 38 is disposed along the movement axis A at the end 16a of the first electrical component support 16 on the movement axis A side. The current flowing through the second high power cable 38 flows from the first board 15 toward the second electrical component support 17. Therefore, electromagnetic noise is removed by the removal unit 46 in the portion of the second high power cable 38 that moves together with the second electrical component support 17 when the second electrical component support 17 moves about the movement axis A. Therefore, even if the second high-power cable 38 moves and approaches other cables, the electromagnetic noise propagating through the second high-power cable 38 can be prevented from being superimposed on the other cables.

[0073] Furthermore, in the outdoor unit 1 of the embodiment, the first electrical component support part 16 has a first notch groove 26 that detachably supports the second electrical component support part 17 as the second electrical component support part 17 rotates about the movement axis A, and a second notch groove 28 that supports the second electrical component support part 17 that has been removed from the first notch groove 26 and fixes it to the open position P2. This makes it possible to easily fix the second electrical component support part 17 to the open position P2, and prevents the second electrical component support part 17 from accidentally moving from the open position P2 to the closed position P1, allowing maintenance work in the interior space B to be carried out stably.

[0074] The following briefly describes the modified examples. The present disclosure includes a configuration in which at least one of the first electrical component support portion 16 and the second electrical component support portion 17 is provided to be movable around a movement axis A along the front surface portion 7F and the side surface portion 7S.

[0075] (Variation) Although not shown, the end 16a of the first electrical component support 16 may be provided to be movable about the movement axis A relative to the end 17a of the second electrical component support 17. In this case, a front panel (not shown) is detachably provided on the machine chamber 9 side of the front surface 7F of the housing 7. By removing the front panel from the front surface 7F side and moving the first electrical component support 16 about the movement axis A relative to the second electrical component support 17, maintenance work can be easily performed in the internal space B covered by the first electrical component support 16. Note that this case is applicable, for example, to a structure in which a cooling device 39 is attached to the second electrical component support 17 or to a structure that does not include the cooling device 39. In a structure that does not include the cooling device 39, moving the first electrical component support 16 can easily perform maintenance work, such as replacing a coil of a four-way valve, which is an example of a component that configures a refrigerant circuit.

[0076] Furthermore, although not shown, both the first electrical component support part 16 and the second electrical component support part 17 may be provided so as to be movable relative to a component provided with the movement axis A. This makes it possible to easily perform maintenance work in the internal space B enclosed by the first electrical component support part 16 and the second electrical component support part 17, for example, by selectively removing the front panel or the side panel 7b from either the front part 7F or the side part 7S of the housing 7 and moving the first electrical component support part 16 or the second electrical component support part 17 around the movement axis A. [Explanation of symbols]

[0077] 1 Outdoor unit 4 Heat exchanger 7. Housing 7F Front section (1st surface section) 7S side part (second surface part) 7R Rear section 8 Heat exchange room 9 Machine room 10 Divider 11 External AC power supply 12 Power terminal block 14 First High-Power Cable 15 First board 15c First connection part 16. First Electrical Equipment Support Department 16a end 17. 2nd Electrical Equipment Support Department Ends of 17a and 17b 18 piping 18a Extended in the Ministry 19 Cooling piping (parts) 26 First Cutting Groove (Return Support Section) 27a Protruding claw (moving axis) 28. Second Cut Groove (Fixed Support) 31 Pressure reduction department 33A high-voltage circuit 33B Low-voltage circuit 35 2nd base plate 35c Chapter 2 37 Weak current ケーブル 38 The 2nd Strong Electric Power 43A Fixed part for weak current circuit (fixed part) 43B Common fixed part (fixed part) 46 Remove part A moving axis B Interior Space P1 Block position P2 Open Location R field

Claims

1. The heat exchanger includes a heat exchange chamber in which a heat exchanger is provided, and a machine chamber in which components constituting a refrigerant circuit are provided, the machine chamber being partitioned by a partition plate; The machine chamber accommodates a power supply terminal block connected to an external AC power supply, a first high-voltage cable having one end connected to the power supply terminal block, a first circuit board to which the other end of the first high-voltage cable is connected and to which a high voltage is supplied from the external AC power supply via the power supply terminal block and the first high-voltage cable, a first electrical component support portion disposed along a first surface portion of the housing and supporting the first circuit board, and a second electrical component support portion disposed along a second surface portion of the housing adjacent to the first surface portion and supporting the power supply terminal block, an end portion of the first electrical equipment support portion on the second surface portion side and an end portion of the second electrical equipment support portion on the first surface portion side are disposed adjacent to each other, At least one of the first electrical component support portion and the second electrical component support portion is provided to be movable around a movement axis along the first surface portion and the second surface portion, the first board has a first connection portion to which the first high-voltage cable is connected, At least one of the first connection portion on the first board and the power terminal block on the second electrical component support portion is located on the movement axis side. Outdoor unit of an air conditioning unit.

2. the second electrical component support portion is provided such that an end portion on the first surface portion side is movable around the movement axis, the first connection portion is located at an end portion of the first substrate on the first surface portion side; An outdoor unit for an air conditioner according to claim 1.

3. When the machine room is viewed from the second surface portion side, the second electric component support portion moves to a closed position where it closes the internal space surrounded by the first electric component support portion and the second electric component support portion from the second surface portion side, and an open position where an end portion of the second electric component support portion opposite to the moving axis side is positioned outside the internal space and away from the internal space, opening the internal space to the second surface portion side. The outdoor unit of an air conditioner according to claim 2.

4. the first electrical component support portion has a step-down portion that steps down the high voltage supplied to the first board, a high-voltage circuit to which the high voltage is supplied via the first high-voltage cable is disposed on the first substrate, on the moving axis side in a direction along the first surface portion, and a low-voltage circuit to which the low voltage stepped down by the step-down unit is supplied is disposed on the opposite side to the moving axis side; the second electrical component support portion has a second board to which a low voltage is supplied from the low-voltage circuit, a low-voltage cable connecting the low-voltage circuit of the first board and the second board is provided in the machine room; The outdoor unit of an air conditioner according to claim 2.

5. a piping that constitutes the refrigerant circuit is provided in an internal space surrounded by the first electrical equipment support portion and the second electrical equipment support portion, and extends above the first electrical equipment support portion; At least one of the first electrical component support portion and the second electrical component support portion has a fixing portion to which the low-voltage cable is fixed, When the extension portion of the piping located above the upper end of the first electrical equipment support portion is viewed from a direction perpendicular to the first surface portion, within a region where the extension portion is located, the low-voltage cable is arranged so that a portion extending from the fixing portion to the first board does not enter from the first electrical equipment support portion into the internal space. The outdoor unit of an air conditioner according to claim 4.

6. the second board has a second connection portion to which the low-voltage cable is connected, the low-voltage cable is arranged along an upper end of the second electrical component support portion, the fixing portion is disposed in the second electrical component support portion above the first board in the first electrical component support portion and closer to the movement axis than the second connection portion of the second board; The outdoor unit of an air conditioner according to claim 5.

7. the power supply terminal block is disposed at an end of the second electrical component support portion opposite to the moving shaft side; The outdoor unit of an air conditioner according to any one of claims 1 to 6.

8. a second high-voltage cable that transmits a high voltage from the first board to the second electric component support section; and a removal section that is provided on the second high-voltage cable and removes electromagnetic noise from a current flowing through the second high-voltage cable, the removal portion is fixed to an end portion of the first electrical component support portion on the movement axis side, the second high-power cable is disposed along the movement axis at an end of the first electrical component support portion on the movement axis side; The outdoor unit of an air conditioner according to any one of claims 1 to 6.

9. the first electrical component support portion has a rotation support portion that rotates the second electrical component support portion around the movement axis and detachably supports the second electrical component support portion; The outdoor unit of an air conditioner according to claim 3.

10. the first electrical equipment support portion has a fixed support portion that supports the second electrical equipment support portion detached from the pivot support portion and fixes it in the open position. The outdoor unit of an air conditioner according to claim 9.

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