Invention title: Electrical component module
Technical field
[0001]
　The present invention relates to an electric component module in which a service panel is arranged in front of an outdoor unit of an air conditioner and is attached to a machine room provided on the back side of the service panel.
Background technology
[0002]
　As shown in FIG. 13, a general air conditioner includes an outdoor unit 10 installed outdoors and an indoor unit 20 installed indoors. The outdoor unit 10 and the indoor unit 20 are connected by a refrigerant pipe 30 to form a vapor compression refrigeration cycle.
[0003]
　The outdoor unit 10 is supplied with lubricating oil from an outdoor heat exchanger 11 that exchanges heat between outdoor air and a refrigerant, a blower fan 11F, a compressor 12 that compresses the refrigerant, and a mixed fluid of the lubricating oil and the refrigerant discharged from the compressor 12. An oil separator 13 for separation, an expansion valve 14 for expanding the inflowing refrigerant to reduce the pressure to a predetermined pressure, an accumulator 15 for separating the inflowing refrigerant into a gas-liquid, a four-way valve 16 for switching between heating operation and cooling operation are provided. There is. Further, the indoor unit 20 is provided with an indoor heat exchanger 21 for exchanging heat between indoor air and a refrigerant, a blower fan 21F, and the like. The refrigerant pipe 30 connects the outdoor heat exchanger 11, the compressor 12, the oil separator 13, the expansion valve 14, the accumulator 15, the four-way valve 16, and the indoor heat exchanger 21. The refrigerant pipe 30 includes a liquid-side refrigerant pipe 30L and a gas-side refrigerant pipe 30G.
[0004]
　As shown in FIG. 14, the outdoor unit 10 has a partition plate 171 partitioning the inside of the housing 17 into a heat exchanger chamber 10A and a machine chamber 10B in the left-right direction, and the heat exchanger chamber 10A includes the above-described outdoor heat. The exchanger 11 and the blower fan 11F are arranged. The above-mentioned compressor 12, oil separator 13, expansion valve 14, accumulator 15, four-way valve 16 and the like are housed in the machine room 10B, and these are service panels (not shown) on the front surface of the housing 17 as shown in FIG. By removing the, it becomes visible from the outside.
[0005]
　In the machine room 10B, an electric component module 40 is further arranged at a substantially intermediate position in the vertical direction. The electrical component module 40 includes a control circuit that controls the overall operation of the air conditioner, a setting circuit for making various settings of the air conditioner, a display circuit that displays the state of the air conditioner, and an AC supplied from the outside. It is a module equipped with a converter circuit that converts power into DC power and outputs it, an inverter circuit that converts DC power output from the converter circuit into AC power and outputs it, and other circuits. It is equipped with multiple electronic components to realize the circuit. The printed circuit board 41 is composed of one printed circuit board 41 so as to secure a piping space on the back side of the machine room 10B.
[0006]
　FIG. 15 shows a front view of the electrical component module 40. The printed circuit board 41 is attached in a standing posture in the machine room 10B. The printed circuit board 41 is divided into a weak electric field 41A and a strong electric field 41B in the vertical direction.
[0007]
　In the light electric region 41A, electronic components such as a microcomputer that constitutes a part of the control circuit described above, electronic components for operating the switch 41A1 that constitutes the setting circuit, the low power connector 41A2 for inserting and removing the plug, and the display circuit The electronic components of the light electric system such as the LED 41A3 constituting the above are mounted. Further, in the high-voltage region 41B, a plurality of high-voltage electronic components for performing power conversion that constitute the rest of the control circuit described above, for example, a converter circuit IC, a power device 41B1 such as an inverter circuit IC, and a smoothing device. Parts such as a large capacity electrolytic capacitor 41B2 and a large power connector 41B3 are mounted.
[0008]
　Further, a cooler 50 for cooling the heat generated in the power device 41B1 is arranged in the high-power region 41B. The cooler 50 includes a heat sink (not shown) having a shape that can be attached to the liquid side refrigerant pipe 30L of the refrigerant pipe 30. The heat sink is arranged so that the front side of the printed circuit board 41, which thermally couples the heat generated by the power device 41B1 so as to be transferred, faces the service panel side (not shown). The refrigerant condensed by the outdoor heat exchanger 11 flows through the liquid side refrigerant pipe 30L during the cooling operation, and the refrigerant condensed by the indoor heat exchanger 21 and depressurized by the expansion valve 14 flows during the heating operation. The heat sink of the cooler 50 is cooled, and the temperature of the power device 41B1 is maintained below a predetermined value. The air conditioner described above is described in Patent Document 1.
Prior art documents
Patent documents
[0009]
Patent Document 1: Japanese Patent No. 5472364
Summary of the invention
Problems to be Solved by the Invention
[0010]
　By the way, in the outdoor unit 10 described above, since the cooler 50 is disposed on the front side of the printed circuit board 41 facing the service panel side for accessing the inside, maintenance such as replacement of the printed circuit board 41 is performed. At this time, it is necessary to remove the refrigerant pipe 30 and the heat sink from the front surface of the printed board 41. Therefore, the maintenance work of the printed circuit board 41 has the disadvantage of requiring skill. Further, in the electrical component module 40 described above, since the cooler 50 is supported by the printed circuit board 41, there is a problem that the mechanical strength of the support structure of the printed circuit board 41 against vibration or the like is low.
[0011]
　The disclosed technique is made in view of the above, and can easily perform maintenance of the printed circuit board without removing the cooler, and can increase the mechanical strength of the printed circuit board support structure with a simple structure. The purpose is to provide an electrical component module.
Means for solving the problems
[0012]
　One aspect of the electrical component module disclosed in the present application is an electrical component module in which a service panel is arranged in front of an outdoor unit of an air conditioner having a refrigerant pipe and is attached to a machine room provided on the back side of the service panel, A control unit for controlling the air conditioner, the service panel is arranged so that the front faces the direction, the fixed plate on which the control unit is mounted, and the refrigerant plate is arranged between the fixed plate and the back surface of the fixed plate. The controller includes a cooler attached to a part of the refrigerant pipe, a first frame attached to one end of the fixed plate, and a second frame attached to the other end of the fixed plate. The power device is thermally coupled to the cooler, and the cooler is mounted so as to straddle the first frame and the second frame.
Effect of the invention
[0013]
　According to one aspect of the electrical component module disclosed in the present application, the printed circuit board can be easily maintained without removing the cooler, and the mechanical strength of the printed circuit board support structure can be increased with a simple structure.
A brief description of the drawing
[0014]
FIG. 1 is a perspective view showing an outdoor unit of an embodiment.
FIG. 2 is a perspective view showing an outdoor unit with a service panel removed.
FIG. 3 is a perspective view showing the outdoor unit with the electrical component module removed from the machine room.
FIG. 4 is an exploded perspective view of an electrical component module and a cooler.
[FIG. 5] FIG. 5 is an explanatory view of attachment for attaching the upper frame and the lower frame to the partition plate.
FIG. 6 is a vertical cross-sectional view of an electrical component module.
FIG. 7 is a cross-sectional view taken along the line AA in FIG.
FIG. 8 is a plan view of the outdoor unit with the top panel removed.
FIG. 9 is a right side view of the outdoor unit with the right side panel removed.
FIG. 10 is a front view of the main board.
FIG. 11 is a front view of a power board.
FIG. 12 is a perspective view showing a modified example of the electrical component module of the embodiment.
FIG. 13 is a circuit diagram of a refrigerant circuit of an air conditioner.
FIG. 14 is a front view of a conventional outdoor unit with a service panel removed.
FIG. 15 is a front view of a conventional electric component module.
MODE FOR CARRYING OUT THE INVENTION
[0015]
　Hereinafter, embodiments of the electrical component module disclosed in the present application will be described in detail with reference to the drawings. It should be noted that the following examples do not limit the electrical component module disclosed in the present application. 1 to 3, 8 and 9 show an outdoor unit 100 according to an embodiment of the present invention. The housing 110 of the outdoor unit 100 includes a front panel 111, a service panel 112 on the right side of the front panel 111, a right side panel 113, a left side panel 114, a top panel 115, a back panel 116, and a bottom panel 117. There is. A stand 118 is attached to the bottom panel 117. The internal space of the housing 110 is partitioned in the left-right direction by a partition plate 119 so that the heat exchanger room 110A is provided on the back side of the front panel 111 and the machine room 110B is provided on the back side of the service panel 112. Has been done. The partition plate 119 constitutes a part of the wall surface of the machine room 110B. The outdoor heat exchanger 11 and the blower fan 11F described above are arranged in the heat exchanger chamber 110A. Further, the machine room 110B houses the above-mentioned refrigerant pipe 30, compressor 12, expansion valve 14, accumulator 15, sub-accumulator 15A, four-way valve 16, and the like. The internal space of the machine room 110B can be visually recognized from the front side of the outdoor unit 100 by removing the service panel 112.
[0016]
　As shown in FIGS. 4 to 9, the electrical component module 200 is attached to a fixed plate 210 arranged in the machine room 110B so that its front surface faces the back surface of the service panel 112, and an upper portion as one end of the fixed plate 210. The upper frame 220 as the long-shaped first frame, the lower frame 230 as the long-shaped second frame to which the lower portion as the other end of the fixing plate 210 is attached, and the upper frame 220 are attached to the partition plate 119. A mounting bracket 240 for mounting, a mounting bracket 250 for mounting the lower frame 230 on the partition plate 119, a main board 260 on which electronic components forming a part of a control circuit as a control unit and other electronic components are mounted, and a control circuit. It includes electronic components and other electronic components constituting the remaining part of the above, and a power board 270 on which a plurality of power devices 274 described later are mounted.
[0017]
　As described above, the printed circuit board of the electrical component module 200 is divided into a main board 260 and a power board 270. In the main board 260 as a printed circuit board, the back surface 260b described later is the front surface 211a of the fixing plate 210 described later. It is mounted on the fixing plate 210 so as to face the. The power substrate 270 as a printed circuit board is mounted on the fixing plate 210 so that the back surface 270b described later faces the back surface 211b of the fixing plate 210 described later. That is, the fixed plate 210 is arranged such that the front surface 211 a of the fixed plate 210 faces the service panel 112. The fixed plate 210 is arranged such that the direction connecting the upper part and the lower part of the fixed plate 210 is along the vertical direction of the machine room 110B.
[0018]
　Further, the electrical component module 200 includes a cooler 300 that is arranged with the refrigerant pipe 30L interposed between the fixed plate 201 and the back surface 211b and is attached to a part of the refrigerant pipe 30L. The cooler 300 is attached to the upper frame 220 and the lower frame 230 so as to straddle the upper frame 220 and the lower frame 230 in a state where the U-shaped bent portion 31 of the refrigerant pipe 30L is attached as described later.
[0019]
　The fixing plate 210 has a main body 211 on which the main board 260 is mounted on the front 211a and the power board 270 is mounted on the back 211b, and a reinforcing plate 210 bent 90 degrees from the upper end of the main body 211 toward the back 211b. It includes an upper horizontal piece 212 and an upper vertical piece 213 for mounting that is bent 90 degrees upward from the rear end of the upper horizontal piece 212. Further, the fixing plate 210 includes a reinforcing lower horizontal piece 214 bent from the lower end of the main body portion 211 toward the front surface 211a by 90 degrees, and a lower vertical piece 214 bent downward from the front end of the lower horizontal piece 214 by 90 degrees. And a piece 215. Mounting portions 215a projecting downward are formed at both ends of the lower vertical piece 215.
[0020]
　The upper frame 220 includes a vertical piece 221 screwed to the upper vertical piece 213 of the fixing plate 210, a reinforcing upper horizontal piece 222 bent 90 degrees rearward from the upper end of the vertical piece 221 and a vertical piece 211. And a mounting piece 223 bent from the left end toward the front by 45 degrees. The upper end of the cooler 300 is attached to the end 224 of the upper frame 220.
[0021]
　The lower frame 230 includes a lower vertical piece 231 screwed to the lower vertical piece 215 of the fixing plate 210, an upper horizontal piece 232 bent backward 90 degrees from the upper end of the lower vertical piece 231, and an upper horizontal piece 232. It includes a reinforcing upper vertical piece 233 bent upward by 90 degrees from the back end, and a mounting piece 234 bent 45 degrees from the left end of the lower vertical piece 231 toward the front. Then, the terminal plate 400 is attached to the front side of the lower vertical piece 231. The lower end of the cooler 300 is attached to the end 235 of the lower frame 230.
[0022]
　The cooler 300 includes an aluminum heat sink 310 that is thermally coupled to a plurality of power devices 274 mounted on the front surface 270a of the power substrate 270 and described later, and two heat sinks 310 having a semicircular cross section. The U-shaped bent portion 31 of the liquid-side refrigerant pipe 30L fitted in the groove 311 and the sheet metal cover 320 for fixing the U-shaped bent portion 31 to the heat sink 310 are provided. In addition to the groove 311, the heat sink 310 has a thick plate portion 312 to which the power device 274 is pressed and thermally coupled, and cover attachment portions 313 and 314 formed on both sides of the thick plate portion 312. The cover 320 has a central pressing portion 321 for pressing the U-shaped bent portion 31 of the liquid side refrigerant pipe 30L, a hook portion 322 bent from one end of the pressing portion 321 and a hook portion 322 from the other end of the pressing portion 321. And a mounting portion 323 that is bent so as to face with.
[0023]
　On the front surface 260a of the main board 260, the electronic components forming a part of the control circuit and other electronic components are mounted as described above. That is, as shown in FIG. 10, on the front surface 260a of the main board 260, an AC input current detection/temperature detection circuit 261, an actuator drive circuit 262 for driving the expansion valve 14 and the four-way valve 16, and an LED lamp 263a as a display are provided. , Display setting circuit 263 including dip switch 263b and button switch 263c as an operation unit, main control IC264 such as a microcomputer, EMC (ElectroMagnetic) for measures against external noise and spontaneous noise including common mode choke coil 254a and capacitor 265b. (Compatibillity) A filter circuit 265, a switching power supply circuit 266 having a switching transformer 266a and a switching IC 266b, an inrush current control circuit 267, and a plurality of connectors 268 arranged in a peripheral portion are mounted. 260b is the back surface of the main substrate 260. The main substrate 260 is formed in a quadrangle, and has an upper end 260c, a lower end 260d, a left end 260e, and a right end 260f. The main board 260 is mounted on the front surface 211a so that the back surface 260b faces the front surface 211a of the main body portion 211 of the fixed plate 210.
[0024]
　On the front surface 270a of the power board 270, electronic components including a plurality of power devices 274 described later that form the remaining part of the control circuit as described above are mounted. That is, as shown in FIG. 11, a diode bridge circuit 271a for rectification, two IGBT (Insulated Gate Bipolar Transistor) elements 271b in which MOSFETs are incorporated in the gate portion of the bipolar transistor to reduce the operating resistance, and 2 for high-speed operation. An FRD (Fast Recovery Diode) element 271c, two PFC (Power Factor Correction) coils 271d for power factor correction, two aluminum electrolytic capacitors 271e for smoothing large power, and the like are mounted. The diode bridge circuit 271a, the IGBT element 271b, the FRD element 271c, the PFC coil 271d, the electrolytic capacitor 271e, and the like configure a converter circuit 271 that converts and outputs AC power supplied from the outside. Furthermore, an IPM (Intelligent Power Module) element 272 and an inverter control IC 273 that form an inverter circuit that converts DC power supplied from the converter circuit 271 into AC power and outputs it by incorporating a drive circuit and a self-protection function are also installed. There is. 270b is the back surface of the power board 270. The power substrate 270 is formed in a quadrangle shape and has an upper end 270c, a lower end 270d, a left end 270e, and a right end 270f. Each of the diode bridge circuit 271a, the IGBT element 271b, the FRD element 271c, the IPM element 272, etc. is a power device 274 that generates a large amount of heat, and is mounted in a vertical arrangement near the left end 270e so as to be easily cooled by the cooler 300. ing. The power board 270 is mounted on the back surface 211b so that the back surface 270b faces the back surface 211b of the main body portion 211 of the fixed plate 210. The cooler 300 faces and abuts a portion of the plurality of power devices 274.
[0025]
　The power board 270 has its vertical size set according to the size of the vertical arrangement of the plurality of power devices 274. Be placed. In this way, the vertical size of the power substrate 270 is set to a slightly larger size corresponding to the vertical size of the vertical arrangement of the plurality of power devices 274. The main board 260 is set to the same size in the vertical direction corresponding to the size of the power board 270 in the vertical direction. A setting circuit 263, a main control IC 264, an EMC filter circuit 265, a switching power supply circuit 266, an inrush current control circuit 267, a connector 268 and the like are mounted. The IGBT element 271b may be replaced with a MOSFET.
[0026]
　The electronic components mounted on the main board 260 and the power board 270 described above are merely examples, and can be changed without departing from the spirit of the present invention. Further, the electronic components mounted on the main board 260 are weak electric system electronic components that operate at a low voltage, and the electronic components mounted on the power board 270 are strong electric system electronic components that operate at a high voltage. High-power electronic components generate more heat and generate more noise than weak-power electronic components.
[0027]
　By the way, in order to arrange the electrical component module 200 in the machine room 110B of the outdoor unit 100, first, a mounting bracket 240 having a slope 241 and a mounting bracket 250 having a slope 251 are previously mounted on the partition plate 119. Then, as shown in FIG. 5, the mounting piece 223 of the upper frame 220 is screwed to the slope 241 of the mounting bracket 240, and the mounting piece 234 of the lower frame 230 is screwed to the slope 251 of the mounting bracket 250. As a result, the upper frame 220 and the lower frame 230 are attached to the partition plate 119 in a cantilevered manner in a posture along the lateral direction.
[0028]
　Next, as shown in FIG. 6, the heat sink 310 of the cooler 300 is installed so as to straddle the end 224 of the vertical piece 221 of the upper frame 220 and the end 235 of the upper vertical piece 233 of the lower frame 230. Attach with screws B1 and B2. Further, as shown in FIG. 7, after pressing the U-shaped bent portion 31 of the refrigerant pipe 30L into the groove 311 of the heat sink 310, the hook portion 322 of the cover 320 is engaged with one cover attachment portion 313 of the heat sink 310. Then, the pressing portion 323 is pressed against the other cover mounting portion 314 of the heat sink 310, and the pressing portion 323 is fixed to the cover mounting portion 314 with screws B3 and B4. This work is performed with the back panel 116 of the outdoor unit 100 removed. As described above, the cooler 300 is provided so as to straddle between the end portion 224 of the upper frame 220 and the end portion 235 of the lower frame 230, and so that the thick plate portion 312 of the heat sink 310 faces the service panel 112. It is attached.
[0029]
　Further, the main board 260 is mounted on the front surface 211a of the main body 211 of the fixed plate 210, and the power board 260 is mounted on the back surface 211b. Then, the fixing plate 210 on which the main board 260 and the power board 270 are mounted, the upper vertical piece 213 is fitted to the vertical piece 221 of the upper frame 220, and the lower vertical piece 215 is fitted to the lower vertical piece 231 of the lower frame 230. As shown, it is attached by screws B5 and B6. At this time, the attachment piece 223 of the upper frame 220 is attached to the partition plate 119 by the attachment metal fitting 240, and the attachment piece 234 of the lower frame 230 is attached to the partition plate 119, and the other end 224 of the upper frame 220 and the lower frame 230 are attached. Since the other end 235 of is fixed to the U-shaped bent portion 31 of the liquid side refrigerant pipe 30L by the cooler 300, the fixing plate 210 is firmly fixed. Further, the plurality of power devices 274 of the power substrate 270 are pressed against the thick plate portion 312 of the heat sink 310 of the cooler 300 so as to be thermally coupled thereto. Therefore, by starting the operation of the air conditioner, the heat generated in the power device 274 is cooled by the cooler 300. If heat-dissipating grease having high thermal conductivity is applied to the thick plate portion 312 of the heat sink 310, thermal coupling will be further improved. After the electrical component module 200 is attached to the machine room 110B as described above, a plug to which the required wiring is connected is connected to the connector 263 of the main board 260 of the electrical component module 200, and the terminal board 400 is required. Another wire is connected.
[0030]
　The electrical component module 200 described above has two printed circuit boards, a main board 260 and a power board 270, but may be configured to have only one printed circuit board. FIG. 12 is a perspective view showing a modified example of the electrical component module 200 of the embodiment.
[0031]
　As shown in FIG. 12, the front surface 211a of the fixed plate 210 is fixed so that the front surface 360a of the printed circuit board 360 faces the service panel 112 (see FIG. 8) and the back surface 360b of the printed circuit board 360 is fixed. One printed circuit board 360 is mounted on the fixed plate 210 so as to face the front surface 211a of the plate 210. On the printed circuit board 360, the printed circuit board 360 in the modified example includes a main board 260 on which electronic components forming a part of a control circuit are mounted on the front surface 260a, and a plurality of power devices 274 forming the remaining part of the control circuit. And a power substrate 270 on which electronic components including the The printed circuit board 360 is formed in a rectangular shape and has an upper end 260c, a lower end 260d, a left end 260e, and a right end 260f.
[0032]
　On the printed circuit board 360, a plurality of power devices 274 are arranged on at least one of the front surface 360a and the back surface 360b. When the power device 274 is arranged on the front surface 360a of the printed circuit board 360, the power device 274 is projected to the back surface 360b side of the printed circuit board 360 through a through hole (not shown) of the printed circuit board 360.
[0033]
　Further, the fixing plate 210 is provided with an opening 216 for thermally coupling the plurality of power devices 274 mounted on the printed circuit board 360 to the cooler 300 at a position facing the power device 274. The power device 274 of the printed circuit board 360 attached to the fixed plate 210 is in contact with the thick plate portion 312 of the heat sink 310 of the cooler 300 through the opening 216.
[0034]
　Instead of the opening 216, a cutout portion (not shown) through which the power device 274 of the printed circuit board 360 passes may be formed on the outer peripheral portion of the fixed plate 210. Further, the fixing plate 210 is not limited to a structure having an opening 216 and a notch portion. For example, a power device 274 of the printed circuit board 360 is arranged on the outer peripheral side of the fixing plate 210 to form an outer peripheral portion of the fixing plate 210. It may be thermally coupled to the cooler 300 across the bridge.
[0035]
　As described above, in the electrical component module 200 of the present embodiment, the electrical component module 200 of the present embodiment is arranged between the fixing plate 210 in which the control circuit is mounted so that the front surface 211a faces the service panel 112 and the back surface 211b of the fixing plate 210. A cooler 300, which is arranged so as to sandwich the refrigerant pipe 30L and is attached to a part of the refrigerant pipe 30L, is provided. Accordingly, when the maintenance of the printed circuit board 360 (or the main circuit board 260 and the power circuit board 270) of the control circuit is performed, the printed circuit board 360 (or the main circuit board 260 and the power circuit board 270) can be performed without removing the cooler 300 from the machine room 110B. Maintenance can be easily performed. Further, the electrical component module 200 includes an elongated upper frame 220 in which an upper portion of the fixed plate 210 is attached to the machine room 110B, and an elongated lower frame 230 in which a lower portion of the fixed plate 210 is attached to the machine room 110B. The cooler 300 is attached so as to straddle the upper frame 220 and the lower frame 230. Accordingly, since the fixing plate 210 connects the upper frame 220 and the lower frame 230, and the cooler 300 connects the upper frame and the lower frame 230, the fixing plate 210, the upper frame 220, and the lower frame 230 are connected. The mechanical strength of the supporting structure of the supported main substrate 260, power substrate 270, and printed circuit board 360 can be increased with a simple structure. That is, in the electrical component module 200, since the cooler 300 also serves as a part of the support structure of the main board 260, the power board 270, and the printed circuit board 360, the support structure can be simplified.
[0036]
　By the way, in the outdoor unit 100, when only one printed circuit board 360 is used (FIG. 12), in the up-down direction of one printed circuit board 360, weak electric system electronic parts are arranged in the weak electric field and strong electric system electronic parts are arranged in the strong electric field. Be placed. When the weak electric system electronic components and the strong electric system electronic components are mounted side by side on the printed circuit board 360 in this way, the vertical size of the printed circuit board 360 becomes large. Therefore, it is difficult to apply such a printed circuit board 360 to an outdoor unit having a small space above and below the machine room. Therefore, it is preferable to divide the printed circuit board 360 into two and mount the two printed circuit boards (main board 260 and power board 270) separately on the front side 211a and the back side 211b of the fixing plate 210. On the other hand, when the vertical sizes of the main board 260 and the power board 270 are different from each other, the advantage of dividing the printed circuit board 360 into two is lost.
[0037]
　Therefore, in this embodiment, the main board 260 and the power board 270 are mounted on the fixing plate 210 with the back surfaces aligned with each other via the fixing plate 210 attached to the machine room 110B. Therefore, the vertical size of the main board 260 and the power board 270 is significantly smaller than the vertical size of the printed board when the main board 260 and the power board 270 are arranged side by side in the vertical direction. It can be effectively applied to an outdoor unit having a housing having a small vertical space.
[0038]
　At this time, the vertical size of the power board 270 is set to a size corresponding to the vertical arrangement size of the plurality of power devices 274, and the main board 260 is also set to be the same as or substantially the same as the vertical size, and then a plurality. By allocating and mounting electronic components other than the power device 274 on the main board 260 and the power board 270, the size of the main board 260 and the power board 270 in the vertical direction can be reduced.
[0039]
　Further, the lower vertical piece 231 of the lower frame 230 projects toward the front side of the fixing plate 210 by the upper horizontal piece 232, and the terminal plate 400 is attached to the front surface 231a of the lower vertical piece 231. Therefore, the terminal plate 400 protrudes forward to facilitate access to the terminal plate 400, and a wide space SP can be secured on the back surface 231b of the lower vertical piece 231. Therefore, the lower frame 230 is arranged in the space SP. It will not interfere with such things.
[0040]
　Further, the plurality of power devices 274 mounted on the power board 270 are thermally coupled to the cooler 300 on the back surface 211b side of the fixing plate 210, but are only pressed against the cooler 300. Therefore, by loosening the screws B5 and B6, the fixing plate 210, the main board 260, and the power board 270 can be integrated and removed from the front of the machine room 110B without being disturbed by the cooler 300. Maintenance of the substrate 260 and the power substrate 270 becomes easy.
[0041]
　Further, on the front surface 260a of the main board 260, a display setting circuit 261 including an LED lamp 261a, a dip switch 261b, a button switch 261c and the like and a plurality of connectors 263 are mounted. Therefore, only by removing the service panel 112 from the outdoor unit 100, the operation contents of the air conditioner can be confirmed by the display contents of the LED lamp 261a, and the setting contents can be changed by operating the dip switch 261b, the button switch 261c, or the like. It becomes easy to switch the circuit connection by inserting and removing the plug to and from the connector 263.
Explanation of symbols
[0042]
　30L: Liquid side refrigerant pipe, 31: U-shaped bent part
　100: Outdoor unit, 110: Housing, 110A: Heat exchanger room, 110B: Machine room, 111: Front panel, 112: Service panel, 113: Right side surface Panel, 114: left side panel, 115: top panel, 116: rear panel, 117: bottom panel, 118: stand, 119: partition plate
　200: electrical component module
　210: fixed plate, 211: body part, 211a: front face , 211b: back surface, 212: upper horizontal piece, 213
　: upper vertical piece, 214: lower horizontal piece, 215: lower vertical piece, 216: opening 220: upper frame, 221: vertical piece, 222: horizontal piece, 223: mounting Piece
　230: Lower frame, 231: Lower vertical piece, 232: Upper horizontal piece, 233: Upper vertical piece, 234: Mounting piece
　240: Mounting bracket
　250: Mounting bracket
　260: Main board, 260a: Front, 260b: Back side
　270: Power board, 270a: front surface, 270b: back surface, 274: power device
　300: cooler, 310: heat sink, 320: cover
　360: printed board
　400: terminal board
The scope of the claims
[Claim 1]
　In an electrical component module in which a service panel is arranged in front of an outdoor unit of an air conditioner having a refrigerant pipe and is attached to a machine room provided on the back side of the service panel
　, a control unit for controlling the air conditioner, , The
　front side of the service panel, the fixed plate on which the control unit is mounted,
　and the rear surface of the fixed plate with the refrigerant pipe interposed therebetween, and a part of the refrigerant pipe. A cooler attached to the
　fixed plate, a first frame attached to one end of the
　fixed plate, and a second frame attached to the other end of the fixed plate, and the
　control unit is equipped with a power device. An 　electrical component module that includes a printed substrate, the
　power device is thermally coupled to the
cooler , and the cooler is mounted so as to straddle the first frame and the second frame.
[Claim 2]
　In the electrical component module according to claim 1, the
　fixed plate is provided with an opening or a notch for thermally coupling the power device of the printed circuit board to the cooler. ..
[Claim 3]
　The electrical component module according to claim 1,
　wherein the printed circuit board includes a main circuit board on which electronic components that form a part of the control unit are mounted on the front surface , and a plurality of the printed circuit boards that form the remaining part of the control unit. The
　fixing plate includes a power board on which electronic components including a power device are mounted on the front surface, and the back surface of the main board faces the front surface of the fixing plate, and the back surface of the power board faces the back surface of the fixing plate. There the power substrate and the main substrate to face are mounted, the as the front of the main board are in the direction of the service panel, the fixing plate is attached to the machine room,
　a plurality of the power devices the thermally coupled to the condenser while being vertically arranged in front of the power board,
　the fixing plate, the direction connecting the other end portion and the end portion is arranged along the vertical direction,
　the power substrate Is set so that
　the vertical size of the power board corresponds to the vertical size of the vertical arrangement of the plurality of power devices, and the vertical size of the main board is the vertical size of the power board. The electrical component module according to claim 1 or 2, which is set according to the above.
[Claim 4]
　The electrical component module according to any one of claims 1 to 3,
　wherein a partition plate that partitions the heat exchanger chamber and the machine chamber is attached to the outdoor unit, and
　one end of the first frame and the An electrical component module in which one end of the second frame is attached to the partition plate, and the other end of the first frame and the other end of the second frame are attached to the cooler.
[Claim 5]
　In the electrical component module according to claim 4, the
　power device is an electrical component module located between the other end of the first frame and the other end of the second frame.
[Claim 6]
　In the electrical component module according to any one of claims 1 to 5, the
　cooler includes a heat sink that is thermally coupled to the power device, a cover that attaches the heat sink to a part of the refrigerant pipe, and the like. An electrical component module having: