JP7290045B2 - electrical equipment unit - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component module arranged in a machine room of an outdoor unit of an air conditioner, and more particularly to a cooler for cooling power devices.

A typical air conditioner, as shown in FIG. 19, 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.

The outdoor unit 10 includes an outdoor heat exchanger 11 that exchanges heat between the outdoor air and the refrigerant, a blower fan 11F, a compressor 12 that compresses the refrigerant, and lubricant discharged from the compressor 12 and a mixed fluid of the refrigerant. An oil separator 13 for separation, an expansion valve 14 for expanding the inflowing refrigerant and depressurizing it to a predetermined pressure, an accumulator 15 for gas-liquid separation of the inflowing refrigerant, a four-way valve 16 for switching between heating operation and cooling operation, etc. are provided. there is

The indoor unit 20 is also provided with an indoor heat exchanger 21 that exchanges heat between the indoor air and the refrigerant, a blower fan 21F, and the like. Refrigerant piping 30 connects these outdoor heat exchanger 11 , compressor 12 , oil separator 13 , expansion valve 14 , accumulator 15 , four-way valve 16 and indoor heat exchanger 21 . The refrigerant pipe 30 includes a liquid-side refrigerant pipe 30L and a gas-side refrigerant pipe 30G.

In the outdoor unit 10, as shown in FIG. 20, a partition plate 171 partitions the interior of the housing 17 into a heat exchanger chamber 10A and a machine chamber 10B in the left-right direction. 11 and a blower fan 11F are arranged.

The machine room 10B accommodates a compressor 12, an oil separator 13, an expansion valve 14, an accumulator 15, a four-way valve 16, and the like. This makes it visible from the outside.

In the machine room 10B, an electrical component module 40 is further arranged at a substantially middle position in the vertical direction. The electrical component module 40 includes a control circuit for controlling the overall operation of the air conditioner, a setting circuit for performing various settings of the air conditioner, a display circuit for displaying the status of the air conditioner, and AC power supplied from the outside. to DC power for output, an inverter circuit for converting DC power output from the converter circuit to AC power for output, and other circuits. It is equipped with multiple electronic components to achieve The printed circuit board 41 is configured by one sheet so as to secure a piping space on the inner side of the machine room 10B.

FIG. 21 shows the front of the electrical component module 40 . The printed circuit board 41 is installed in the machine room 10B in an upright posture. The printed circuit board 41 is vertically divided into a weak current region 41A and a strong current region 41B.

In the weak current area 41A, there are electronic parts such as a microcomputer that constitutes a part of the control circuit described above, electronic parts for operation such as a switch 41A1 that constitutes a setting circuit, a low-power connector 41A2 for plugging/unplugging, and a display circuit. light-current electronic components such as LED 41A3 constituting

In addition, in the high-voltage area 41B, a plurality of high-voltage electronic components for performing power conversion constituting the rest of the control circuit described above, for example, a power device 41B1 such as an IC for a converter circuit and an IC for an inverter circuit, a power device 41B1 for smoothing Components such as a large-capacity electrolytic capacitor 41B2 and a high-power connector 41B3 are mounted.

A cooler 50 for cooling the heat generated by the power device 41B1 is further arranged in the high-voltage region 41B. 20 and 22, cooler 50 includes a heat sink 51 made of, for example, an aluminum material that thermally couples liquid-side refrigerant pipe 30L and power device 41B1.

Two pipe portions of the liquid-side refrigerant pipe 30L that are bent in a U shape and extend in parallel in the vertical direction are used as cooling pipe portions 30L1 and 30L2, and the heat sink 51 is arranged to be in close contact with the power device 41B1. It is attached to the cooling pipe portions 30L1 and 30L2 by a pressing cover 52. As shown in FIG.

In this conventional example, the pressing cover 52 has, on both left and right sides, pressing portions 521 for one cooling pipe portion 30L1 and pressing portions 522 for the other cooling pipe portion 30L2. It is screwed to a mounting base 523 and attached to the cooling pipe sections 30L1 and 30L2.

During cooling operation, the refrigerant condensed in the outdoor heat exchanger 11 flows through the cooling pipe portions 30L1 and 30L2, and in the heating operation, refrigerant condensed in the indoor heat exchanger 21 and decompressed by the expansion valve 14 flows. The heat sink 51 of the cooler 50 is cooled by the temperature, and the temperature of the power device 41B1 is kept below a predetermined value. The air conditioner described above is described in Patent Document 1.

Referring to FIG. 20, when performing maintenance and inspection of electrical components attached to the back of electrical component module 40 and mechanical components such as pipes and valves present on the back side of electrical component module 40, The electrical component module 40 can be opened and closed, but in many cases, a hinge mechanism is provided on one end side (for example, the left side in FIG. 20) of the electrical component module 40 as described in Patent Document 2, for example. applied, and the electrical component module 40 is of a rotary type.

Japanese Patent No. 5472364 JP 2012-159222 A

However, the provision of the hinge mechanism requires a rotating shaft, parts such as its bearings, and a space for arranging these parts, which poses problems in terms of space saving and cost. In addition, when power lines, signal lines, and the like are connected to the electrical component module 40, the wiring length is made extra long in order to prevent excessive tension from being applied to those wires even when the electrical component module 40 is opened and closed. need to keep

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electrical component module that has a simple structure and can be opened and closed without requiring a space for opening and closing.

In order to solve the above-mentioned problems, the present invention provides a fixing plate to which a circuit board including a power device as a component for operating the air conditioner is fixed, and a pair of upper and lower fixing plates horizontally provided in the outdoor unit of the air conditioner. An electrical component unit including an upper frame and a lower frame, wherein the fixing plate is supported on the front side of the upper frame and the lower frame,
A heat sink in contact with the power device is attached to the back sides of the upper frame and the lower frame, and the fixing plate is attached to the upper frame while the heat sink is attached to the upper frame and the lower frame. and is removable from the lower frame,
Between at least one left and right end of the upper side of the fixing plate and the upper frame, the fixing plate is held perpendicular to a vertical plane including the upper frame and the lower frame at a predetermined angle. It is characterized by having provisional fixing means for

In the present invention, the temporary fixing means includes a locking claw formed by cutting and raising a portion of the upper frame and having an upper end and both side ends cut open, and the locking claw formed on one end side of the fixing plate. An aspect is included that consists of a combination of locking holes that are hooked on.

As another aspect, the temporary fixing means includes a locking claw formed by cutting and raising a portion of one end side of the fixing plate and a locking claw having both side ends cut open, and the locking claw formed on the upper frame side. It may be a combination of locking holes that are hooked on a nail.

In the case of the former mode, an ear piece is provided on one end side of the fixing plate and is bent at right angles to the plate surface of the fixing plate, and the locking hole is formed in the ear piece.

In the case of the latter mode, one end side of the fixing plate is provided with an ear piece that is bent at right angles to the plate surface of the fixing plate, and the locking claw is formed on the ear piece.

In the present invention, at least one of the right and left ends of the lower side of the fixing plate is provided with an engaging portion for the lower frame when the fixing plate is temporarily fixed to the upper frame via the temporary fixing means. is preferred.

According to the present invention, the electrical component module can be opened and closed with a simple structure and without requiring a space for opening and closing.

The perspective view which shows the outdoor unit which concerns on embodiment of this invention. The perspective view which shows the state which removed the service panel of the said outdoor unit. The perspective view which shows the state which removed the electrical component module from the machine room. FIG. 3 is a perspective view of an electrical component module developed including a cooler; The perspective view which shows the aspect which attaches an upper frame and a lower frame to a partition plate. FIG. 2 is a vertical cross-sectional view of the electrical component module; FIG. 7 is a cross-sectional view taken along line AA of FIG. 6; FIG. 4 is a perspective view showing a preferred form of a heat sink that essentially constitutes a cooler; (a) A sectional view taken along line AA in FIG. 8, (b) a sectional view taken along line BB in FIG. Sectional drawing which shows the cooler which has a holding cover of another aspect. FIG. 11 is a cross-sectional view showing a pressing cover extracted from FIG. 10; (a) A schematic sectional view showing one mode of action of the pressing cover, (b) A schematic sectional view showing another mode of action of the pressing cover. The top view which shows the state which removed the top panel from the outdoor unit. The right side view which shows the state which removed the right side panel from the outdoor unit. FIG. 4 is a perspective view showing a state in which a fixing plate to which a main board and a power board are attached is supported at a normal position in a machine room except during maintenance; FIG. 4 is a perspective view showing a state in which the fixing plate is temporarily fixed (temporarily fixed) to the frame in the machine room during maintenance; (a) A perspective view showing an example of the temporary fixing means, (b) A perspective view showing another example of the temporary fixing means. The perspective view which shows the support by the lower frame at the time of temporary fixing. The circuit diagram which shows the refrigerant circuit of an air conditioner. The front view which shows the state which removed the service panel of the conventional outdoor unit. The front view which shows the conventional electrical component module. Sectional drawing which shows the cooler with which the conventional electrical component module is provided.

Next, some embodiments of the present invention will be described with reference to FIGS. 1 to 18, but the present invention is not limited thereto.

First, an outdoor unit 100 to which an electrical component module 200 of the present invention is applied will be described with reference to FIGS. 1 to 3, 13 and 14. FIG.

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 rear panel 116, and a bottom panel 117. A stand 118 is attached to the bottom panel 117 .

The housing 110 is partitioned in the left-right direction by a partition plate 119 such that the back side of the front panel 111 is a heat exchanger chamber 110A and the back side of the service panel 112 is a machine chamber 110B. The partition plate 119 forms part of the wall surface of the machine room 110B.

The outdoor heat exchanger 11 and the blower fan 11F are arranged in the heat exchanger chamber 110A. Further, the refrigerant pipe 30, the compressor 12, the expansion valve 14, the accumulator 15, the sub-accumulator 15A, the four-way valve 16, and the like are accommodated in the machine room 110B. The machine room 110B can be visually recognized from the front side of the outdoor unit 100 by removing the service panel 112 .

Referring particularly to FIG. 4, the electrical component module 200 includes a fixing plate 210 arranged in the machine room 110B so that the front face faces the back surface of the service panel 112, and an elongated upper part to which the upper part of the fixing plate 210 is attached. A frame 220, an elongated lower frame 230 to which the lower part of the fixing plate 210 is attached, a mounting bracket 240 for mounting the upper frame 220 to the partition plate 119, a mounting bracket 250 for mounting the lower frame 230 to the partition plate 119, and a control A main board 260 on which electronic components and other electronic components that make up part of the circuit are mounted, electronic components and other electronic components that make up the rest of the control circuit, and a plurality of power devices 274 to be described later are mounted. A power board 270 is provided.

Thus, in this embodiment, the printed circuit board of the electrical component module 200 is divided into the main circuit board 260 and the power circuit board 270. The main circuit board 260 has its rear surface 260b facing the front surface 211a of the fixing plate 210. Mounted on the fixed plate 210 , the power board 270 is mounted on the fixed plate 210 so that the rear surface 270 b faces the rear surface 211 b of the fixed plate 210 .

A cooler 300 that cools the power device 274 is arranged on the front 270a side of the power board 270 (the rear side of the power board 270 in FIG. 4). 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 while being attached to the U-shaped bent portion 31 of the liquid-side refrigerant pipe 30L.

The U-shaped bent portion 31 of the liquid-side refrigerant pipe 30L includes two pipes extending parallel to each other in the vertical direction. It is used as the parts 30L1 and 30L2. Refrigerants having the same temperature flow through the cooling pipe portions 30L1 and 30L2.

The fixed plate 210 includes a main body portion 211 having a main substrate 260 mounted on a front surface 211a and a power substrate 270 mounted on a rear surface 211b, and a reinforcing member bent at 90 degrees from the upper end of the main body portion 211 toward the rear surface 211b. It has an upper horizontal piece 212 and an upper vertical piece 213 for attachment bent upward at 90 degrees from the rear end of the bent piece 212 .

A lower horizontal piece 214 for reinforcement bent from the lower end of the main body 211 toward the front surface 211a at 90 degrees, and a lower vertical piece 215 bent downward at 90 degrees from the front end of the lower horizontal piece 214 are provided. Prepare. Both ends of the lower vertical piece 215 are provided with mounting portions 215a protruding downward.

The upper frame 220 includes a vertical piece 221 screwed to the upper vertical piece 213 of the fixing plate 210, an upper horizontal piece 222 for reinforcement bent backward at 90 degrees from the upper end of the vertical piece 221, and the vertical piece 211. and a mounting piece 223 that is bent forward at 45 degrees from the left end thereof. 224 is the end to which the cooler 300 is attached.

The lower frame 230 consists of a lower vertical piece 231 screwed to the lower vertical piece 215 of the fixing plate 210, an upper horizontal piece 232 bent backward at 90 degrees from the upper end of the lower vertical piece 231, and an upper horizontal piece 232. It has a reinforcing upper vertical piece 233 bent upward from the inner end at 90 degrees, and a mounting piece 234 bent forward from the left end of the lower vertical piece 231 at 45 degrees. A terminal plate 400 is attached to the front side of the lower vertical piece 231 . 235 is the end to which the cooler 300 is attached.

6 and 7, cooler 300 includes an aluminum heat sink 310 thermally coupled to a plurality of power devices 274 mounted on front surface 270a of power board 270. As shown in FIG.

The heat sink 310 is formed with two housing grooves 311 and 311 each having a semicircular cross section, and the cooling pipe portions 30L1 and 30L2 are fitted into the housing grooves 311 and 311, respectively. The storage grooves 311 and 311 are shallower than the outer diameters of the cooling pipe portions 30L1 and 30L2, and the cooling pipe portions 30L1 and 30L2 are fixed to the heat sink 310 by a pressing cover 320 made of sheet metal.

In this embodiment, a plurality of power devices 274 are arranged vertically as a power device group along the cooling pipe portions 30L1 and 30L2, and the heat sink 310 has the same length as the power device group in the vertical direction. or have a length greater than that length. The present invention also includes a mode in which there is one power device 274 .

Further, the heat sink 310 includes a thick plate portion 312 that is pressed against and thermally coupled to the power device 274 in addition to the housing groove 311 for the piping, and cover mounting portions 313 and 314 formed on both sides of the thick plate portion 312 . have.

The pressing cover 320 includes a central pressing portion 321 that presses the cooling pipe portions 30L1 and 30L2, a hook portion 322 bent from one end of the pressing portion 321, and a hook portion 322 facing the hook portion 322 from the other end of the pressing portion 321. and a mounting portion 323 that is bent inward.

To assemble the cooler 300, first, as shown in FIG. are attached with screws B1 and B2.

Then, as shown in FIG. 7, the cooling pipe portions 30L1 and 30L2 are fitted into the housing grooves 311 and 311 of the heat sink 310, the hook portion 322 of the pressing cover 320 is engaged with one cover mounting portion 313 of the heat sink 310, 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.

Next, referring to FIGS. 8 and 9, a cooler 300A according to another embodiment in which anti-condensation measures are taken will be described.

The heat sink 310 in the above embodiment is entirely made of aluminum, but in the cooler 300A according to this alternative embodiment, the heat sink 310A includes a heat conductor 330 made of, for example, an aluminum material having high thermal conductivity, and a heat insulating material. It consists of two kinds of members, the heat insulator 340 made of, for example, a synthetic resin material.

Thermal conductors 330 are arranged only in the portions that contact power devices 274 , and the remaining portions are formed by thermal insulators 340 .

The heat sink 310A is preferably manufactured by insert molding in which the heat conductor 330 is placed in a mold (not shown) and a synthetic resin is injected. The heat conductor 330 is provided in the heat insulator 340 so that one end thereof is exposed on one side of the heat sink 310A on the power board 270 side, and the other end is exposed on the other side on the cooling pipe portions 30L1 and 30L2 side. be done.

Also in this other embodiment, on the other surface of the heat sink 310A (cooler 300A), housing grooves 311, 311 for the cooling pipe portions 30L1, 30L2 are formed, including the portion of the heat conductor 330. As shown in FIG. 9A, the heat conductor 330 and the cooling pipe portions 30L1 and 30L2 are in contact with each other in the storage grooves 311 and 311, respectively.

In this manner, the heat conductor 330 is arranged only in the portion that contacts the power device 274, and the remaining portion is the heat insulator 340. This makes it difficult for condensation to occur on the surface of the heat sink 310A. It is no longer necessary to control the temperature of the refrigerant.

In addition, since it is not necessary to form a drainage channel in the heat sink 310A (cooler 300A) itself, it is possible to reduce the size and improve the degree of freedom in design. Furthermore, since synthetic resin material, which is cheaper than aluminum material, can be used for the heat insulator 340, the cost can be reduced.

Next, as shown in FIGS. 10 to 12, even when the cooler is arranged behind the power board 270 when viewed from the front side (service panel side) as shown in FIG. The cooler 300B will be explained.

Also in this cooler 300B, the heat sink 310 has one cover mounting portion 313 on one left side end and another cover mounting portion 314 on the other right side end for mounting the pressing cover 320A. However, while one cover mounting portion 313 is formed as a substantially right-angled corner portion, the other cover mounting portion 314 is formed with an inclined surface 314a inclined toward the power board 270 side. there is The inclination angle of the inclined surface 314a with respect to the power substrate 270 is preferably about 30 to 60 degrees, for example.

Further, on the side of the heat sink 310B on which the piping is fixed (the side opposite to the side in contact with the power device 274), in addition to the housing grooves 311 and 311 for the cooling piping sections 30L1 and 30L2, a recess 315 is formed between them.

The pressing cover 320A used here is made of sheet metal having elasticity, and has a hook 322 as a first engaging portion that engages with the cover mounting portion 313 on one side end of the heat sink 310 at one end thereof. Using this hook 322 as a first hook, the pressing cover 320A has a second hook 324 as a second engaging portion that engages with the cover mounting portion 314 on the other side end of the heat sink 310 at the other end.

The lower edge of the first hook 322 is integrally formed with a flange 322a that is bent at the same angle as the corner of the cover attachment portion 313 (90° in this example). In addition, the second hook 324 has the same inclination angle as the inclined surface 314a of the cover attachment portion 314, and the end portion of the second hook 324 is bent around the edge of the cover attachment portion 314 with deformation. A claw 324a is provided for engagement.

Referring to FIG. 11, the hook 324a has a first bent portion 324b that is bent substantially perpendicularly downward from the end of the second hook 324 in FIG. It has a second bent portion 324c that is bent rightward in FIG. 11 at a substantially right angle, and a substantially right-angled corner portion 324d is formed by the first bent portion 324b and the second bent portion 324c. Further, the end of the second hook 324 is provided with a reinforcing piece 324e for the hook 324a.

The pressing cover 320A presses one cooling pipe portion 30L1 of the cooling pipe portions 30L1 and 30L2 housed (fitted) in the storage grooves 311 and 311 as a means for holding the cooling pipe portion. It has a first pressing portion 325 and a second pressing portion 326 that presses the other cooling pipe portion 30L2.

According to this cooler 300B, the first hook 322 on one end side of the pressing cover 320A is engaged with the cover mounting portion 313 on one side end side of the heat sink 310, and the engaging portion is used as an axis (fulcrum). When the other end side of the pressing cover 320A is rotated clockwise in FIG.

Then, when the second hook 324 is pressed toward the cover attachment portion 314, the claw 324a is elastically deformed so as to be spread, and the corner portion 324d climbs over the edge of the cover attachment portion 314 and engages. Thereby, the cooling pipe portions 30L1 and 30L2 can be reliably fixed to the heat sink 310. As shown in FIG.

As shown in FIG. 10, since the second hook 324 of the pressing cover 320A is finally screwed to the cover mounting portion 314 with the screw B7, the cover mounting portion 314 is not necessarily attached while elastically deforming the hook 323b. It is not necessary to engage the rim.

When screwing the second hook 324 to the cover mounting portion 314, since the cover mounting portion 314 and the second hook 324, which are the screwing portions, are inclined toward the power board 270 side, A hand can be turned from the front side (service panel 112 side) of 110B to perform the screwing operation.

As for the order of insertion into the storage grooves 311, 311, the cooling pipe portion 30L1 on the left side and the cooling pipe portion 30L2 on the right side are in order. Even if the portion 30L2 is misaligned, the second hook 324 of the pressing cover 320A is obliquely formed so that the cooling pipe portion 30L2 on the right side can be pushed toward the corresponding storage groove 311, which facilitates assembly. It's becoming

Referring to FIG. 12(b), when the second pressing portion 326 attempts to press down the cooling pipe 30L2 on the right side, the first pressing portion 325 first contacts the cooling pipe 30L1 on the left side. , the second pressing portion 326 may not strongly abut against the cooling pipe 30L2 on the right side.

Therefore, in this embodiment, as shown in FIG. 11, a step (height difference) d is provided between the pressing surface 325a of the first pressing portion 325 and the pressing surface 326a of the second pressing portion 326 so that the second pressing portion 326 is made lower than the first pressing portion 325 by the step d, so that the first pressing portion 325 and the second pressing portion 326 press down the cooling pipe portions 30L1 and 30L2 substantially evenly.

In addition, it is preferable to form a V-shaped (or U-shaped) groove 327 protruding toward the concave portion 315 between the first pressing portion 325 and the second pressing portion 326 . According to this, it is possible to disperse the pressing force on the cooling pipe portions 30L1 and 30L2.

Note that the pressing covers 320 and 320A do not necessarily have to be made of sheet metal, and may be made of an elastic synthetic resin plate. Moreover, since the cooler for cooling the power device is substantially a heat sink, the terms cooler and heat sink are used synonymously in this specification.

15 to 18, the fixing plate 210 (the board to which the main board 260 and the power board 270 are attached) is removed in order to facilitate access to the rear side (back side) of the electrical component housing during maintenance. A configuration for temporarily fixing (also referred to as temporary fixation or temporary placement) by pressing will be described.

As shown in FIG. 15, the fixing plate 210 is attached to the upper frame 220 and the lower frame 230 so as to cover the front surface of the electrical component storage (the front surface facing the service panel 112) during normal operation except during maintenance.

In this embodiment, the vertical piece 221 of the upper frame 220 is provided with a locking claw 225 , whereas the upper vertical piece 213 (see FIG. 4 ) of the fixing plate 210 is provided with a counterpart of the locking claw 225 . A locking hole 216 as is formed.

As shown in FIG. 17(a), the locking claw 225 is formed by cutting up a part of the vertical piece 221 of the upper frame 220, and the upper end 225a and both side ends 225b, 225b are cut open. The locking claws 225 are provided at a plurality of locations (two locations in this example) on the vertical piece 221 . The locking holes 216 are rectangular holes large enough to accommodate the locking claws 225 , and are provided at a plurality of locations (two locations in this example) on the upper vertical piece 213 of the fixing plate 210 corresponding to the locking claws 225 .

The fixing plate 210 is arranged between the upper frame 220 and the lower frame 230 so that the locking holes 216 are hooked on the locking claws 225 , and finally screwed to the upper frame 220 and the lower frame 230 .

The fixing plate 210 is removed in order to facilitate access to the rear side of the electrical component storage portion during maintenance. It can be temporarily fixed to the upper frame 220 and the lower frame 230 .

Therefore, an ear piece 217 is provided at one end (the left end in FIG. 15) of the upper vertical piece 213 of the fixing plate 210, and as shown in FIG. A stop hole 218 is formed.

The ear piece 217 is bent from one end of the upper vertical piece 213 of the fixing plate 210 toward the service panel 112 side, and the locking hole 218 is provided in the upper vertical piece 213 of the fixing plate 210. This locking hole has the same shape and size as the locking hole 216 .

According to this, at the time of maintenance, the fixed plate 210 is removed from the upper frame 220 and the lower frame 230 by loosening the screws, and as shown in FIG. By hooking the provided locking claws 225, the fixing plate 210 is temporarily placed in a state (substantially fully open state) perpendicular to the front surface of the electrical component housing (vertical plane including the upper frame 220 and the lower frame 230). It can be stopped (temporarily fixed).

As a modification, as shown in FIG. 17(b), a locking hole 218 is formed on the vertical piece 221 side of the upper frame 220, and a locking claw 225 is provided on the ear piece 217 side of the fixing plate 210. may In this case, the locking claw 225 can be formed by cutting and lifting a part of the tab 217 so that the lower end 225c and the side ends 225b, 225b are cut open.

In order to stabilize the temporarily fixed state of the fixing plate 210, as shown in FIG. is preferably formed.

This temporary fixing structure has a simpler structure than an opening/closing type in which one side edge of the fixing plate 210 (for example, the left side in FIG. 4) is rotated as an axis. When it is connected, it is not necessary to lengthen the wiring length unlike the opening and closing type, and the wiring length can be shortened.

30L: liquid side refrigerant pipe, 31: U-shaped bent portion, 31L1, L2: cooling pipe portion 100: outdoor unit, 110: housing, 110A: heat exchanger room, 110B: machine room, 111: front panel, 112: Service panel, 113: Right side 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: Main body 211a: Front 211b: Back 212: Upper horizontal piece 213: Upper vertical piece 214: Lower horizontal piece 215: Lower vertical piece 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 270: Power board 270a: Front 270b: Back 274: Power device 300, 300A, 300B: Cooler, 310, 310A: Heat sink, 320, 320A: Press cover, 325: First pressing part , 326: second pressing portion, 327: V-shaped groove, 330: heat conducting portion, 340: heat insulating portion, 400: terminal plate

Claims (6)

a fixing plate to which a circuit board including a power device as a part for operating the air conditioner is fixed; In an electrical component unit in which a fixing plate is supported on front sides of the upper frame and the lower frame,
A heat sink in contact with the power device is attached to the back sides of the upper frame and the lower frame, and the fixing plate is attached to the upper frame while the heat sink is attached to the upper frame and the lower frame. and is removable from the lower frame,
Between at least one left and right end of the upper side of the fixing plate and the upper frame, the fixing plate is held perpendicular to a vertical plane including the upper frame and the lower frame at a predetermined angle. An electrical component unit, characterized by comprising a temporary fixing means.
The temporary fixing means includes an engaging claw formed by cutting and raising a portion of the upper frame and having an upper end and both side ends cut open, and an engaging claw formed on one end side of the fixing plate and engaged with the engaging claw. 2. The electrical component unit of claim 1, comprising a combination of holes. The temporary fixing means includes an engaging claw formed by cutting and raising a portion of one end side of the fixing plate and having a lower end and both side ends cut open, and an engaging claw hooked to the engaging claw formed on the upper frame side. 2. The electrical component unit of claim 1, comprising a combination of blind holes. An ear piece that is bent at right angles to the surface of the fixing plate is provided on one end side of the fixing plate, and the locking hole is formed in the ear piece. Item 3. The electrical component unit according to item 2. An ear piece that is bent at right angles to the surface of the fixing plate is provided on one end side of the fixing plate, and the locking claw is formed on the ear piece. Item 4. The electrical component unit according to item 3. At least one left and right end of the lower side of the fixing plate is provided with an engaging portion for the lower frame when the fixing plate is temporarily fixed to the upper frame via the temporary fixing means. The electrical equipment unit according to any one of claims 1 to 5.

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