JP3322778B2 - Outdoor unit of air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit of an air conditioner, and more particularly to an improvement in a configuration of an electric component box disposed in the outdoor unit.

[0002]

2. Description of the Related Art An air conditioner commonly used includes an indoor unit installed in a room to be air-conditioned and an outdoor unit installed in an outdoor part of a building. The units are connected to each other via a refrigerant pipe or electric wiring. It becomes.

[0003] The outdoor unit includes an outdoor heat exchanger,
A compressor, a valve such as a four-way valve, a blower, and an electrical component box that houses electrical control components for electrically controlling the compressor, the blower, and the like are provided.

Recently, frequency control of a compressor has been generally used as refrigeration cycle control. For this reason, the above-mentioned electric control components include a giant transistor as a switching transistor of a CPU, a capacitor, a transformer, a rectifier and an inverter. (Hereinafter referred to as G · TR), a control board (PC board), and many other components.

[0005] In particular, the above-mentioned G · TR has a large amount of heat radiation due to the switching action. When housed in a sealed electric component box, the inside of the box becomes abnormally high in temperature, and, of course, other electric control units are not used. Thermal adverse effects on parts.

Therefore, a configuration is adopted in which a radiator is provided on the outer surface of the electric component box to efficiently radiate the heat of G.TR. The radiator is made of an aluminum material having excellent heat conductivity, and is obtained by extrusion.

[0007]

As described above, basically, all of the electric control components other than the radiator are housed in the electric component box. However, for example, as disclosed by the present applicant in Japanese Patent Application No. 5-251795, capacitors, rectifiers and G.
TR is not mounted on the control board.

Since the electric component box is formed to be long in the vertical and horizontal directions and short in the depth direction in a thin box shape in plan view, the control board is in an upright state because of the space in which the electric component box is arranged. Due to the accommodation in.

In other words, since the control board is housed in a large thin box-shaped electrical component box in the vertical and horizontal directions, relatively large capacitors, rectifiers, and electrical control components such as G / TR can be mounted. Instead, they are separately arranged and electrically connected to each other via lead wires.

[0010] Therefore, the number of lead wires between the control board and the electric control parts not mounted thereon increases, and
The wiring process is complicated, the degree of freedom in arranging the control board is small, and the miniaturization of the electric component box itself is hindered.

In addition, the control board and the G
・ TR and capacitors are not always arranged in the same direction. To cool the electric control parts in all electric parts boxes efficiently, many cooling slits must be opened. As the number of openings increases, the penetration of dust into the electrical component box increases.

As described above, when the cooling efficiency for the inside of the electric component box is to be sufficiently improved, there are problems such as difficulty in preventing dust from entering the box. The present invention has been made in view of the above circumstances, and has as its object to promote miniaturization of an electric component box, improve cooling efficiency for electric control components housed therein, and prevent dust from entering. It is an object of the present invention to provide an outdoor unit of an air conditioner provided with an electric component box capable of preventing stress, reducing stress applied to a control board, and improving assembling and service workability.

[0013]

SUMMARY OF THE INVENTION In order to satisfy the above-mentioned object, the present invention provides a unit body for accommodating a compressor , a heat exchanger, a blower disposed opposite the heat exchanger, and the like. An outdoor unit for an air conditioner, which is disposed in the unit main body and includes an electric component box containing electric control components for driving and controlling the compressor, the blower, and the like, wherein the electric component box includes a rectifier and an inverter. a control board electrical control components are mounted, including the amount of heat generated large consisting electrical control components, such as switching transistors, the control
It is made of resin mold material that attaches and supports the periphery of the control board.
Mounting support and a control board provided on the mounting support.
Cover the outer peripheral surface of the column and mounting support that receive the plate from below.
Metal plate that houses the electrical control components with a secure mounting support
And a component box main body in which a control board is located at an upper portion and all the electric control components are accommodated in a downward direction where an air flow passage in the box is formed .

Furthermore, to the control board, the large-made electrical control components of the side edge portion side <br/> the heating value are mounted, a plurality of cooling fins for large become the electronic control module of the heat value Together
A projecting radiator is attached.

[0015]

[0016]

Furthermore, the mounting support, Bei a rectifying unit for rectifying the air guided into with also serves as a reinforcement
I got it. Further, a part of the mounting support is protruded from the case body, and the protruding portion is a holding portion for housing and holding a lead wire connected to the electric control component .

[0018]

Further, the case body is cooled on the lower surface thereof.
A slit for introducing cooling air is provided, and a SL connector mounting plate is mounted. The SL connector mounting plate is set at a position on the side of the slit where the cooling air is introduced.
Was.

Further, the case body is provided with an opening in a lower surface thereof, and the mounting support is inserted into the opening of the case body and protrudes from the lower surface of the case body. An outlet body for taking out air was provided.

[0021]

Further, the component box main body has a lid detachably attached to the upper surface of the control board . Further
To, the lid may have an insulating sheet between the control board via
Be present.

Further, the insulating sheet has a projection on its upper surface side to withstand pressure from above .

Further, the insulating sheet accommodates the control board on which the electric control parts are mounted, and is sealed with a resin to be integrated with the control board .

[0025] In particular it provided with a means to solve the above problems
In addition, electrical control components, including electrical control components that generate a large amount of heat, such as rectifiers and inverter switching transistors, are mounted on the control board, simplifying wiring processing and improving assembly workability and serviceability as an electrical component box. In addition, since all the electric control parts face downwards where the air flow path in the box is formed, it is not necessary to set up a complicated air flow path, and it is not necessary to increase the number of cooling openings. Cooling efficiency is improved.

Further, the electric component box itself also has a thin box shape in the vertical direction, so that the degree of freedom of arrangement in the outdoor unit is increased. Further
In addition, the component box body is
And rigidity with double structure with metal plate case
And protect the electrical control components and control boards contained inside.
Protection and noise isolation. further,
An electrical control component that generates a large amount of heat is mounted on the side of the control board.
Cooling the electric control parts with a large amount of heat
Since the radiator in which the fins are integrally provided is attached, the cooling efficiency is particularly high particularly for the electric control parts that generate a large amount of heat.

[0027]

Further, the mounting support serves as a reinforcement and is empty.
A rectifier for rectifying air is provided.
Equipped with a holding part that protrudes from
Takara, the mounting support comprises a holding to the control board, can be efficiently cooled to the electrical control components, wiring processing is facilitated.

Further , a slit is provided in the case body,
A SL connector mounting plate was mounted on the cooling air introduction direction side
Furthermore, since the mounting support is provided with an outlet body, the case body secures the rigidity of the component box main body, efficiently cools the electric control components housed therein, and water droplets into the component box main body. To prevent intrusion .

Further, the component box body is mounted on the upper surface of the control board.
Since the cover is provided detachably, the upper surface portion on the back side of the control board is shielded by the cover to protect the control board. In addition, an insulating sheet is interposed between the lid and the control board.
To withstand pressure from above on the top side of the insulation sheet
Because with the order of the projections by an insulating sheet between the control board and the lid, thermal, pressure-resistant effect can be obtained with forming the electrical insulation, further insulating sheet is sealed with resin
Since it is integrated with the control board, it increases reliability against salt damage.

[0031]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 shows an outdoor unit constituting the air conditioner. In the figure, reference numeral 1 denotes a unit body which is an outer casing, a divided body in which a front panel 3 and a top plate 4 provided with a blowout grill 2 are integrated, a side plate 5 and a back plate 6, and a bottom plate not shown here. Consists of a combination with an integrated divided body.

The inside of the unit body 1 is divided into two by a partition plate 7. One side plate 5 is provided in the partitioned one room 8a.
An outdoor heat exchanger 9 formed in a plane L shape along the back plate 6 is arranged. And in the remaining space,
A blower 10 is arranged.

A compressor 11 is disposed in the partitioned other chamber 8b, and accommodates a pipe 12 connected to the compressor 11, and valves 13 such as a four-way valve and an expansion valve (not shown). A cover plate 14 that covers a packed valve (not shown) is attached to the side plate 5 facing the chamber 8b.

The upper end of the partition plate 7 is notched, and the electric component box 15 is placed in the notch 7a. The electric component box 15 is formed in a thin box shape that is thin in the up-down direction and large in the left-right direction and the depth direction.

One end of the electric component box 15 extends from the partition plate 7 to the vicinity of the blower 10 on the one chamber 8a side, and the other end is connected to the other chamber 8.
b to the upper part of the compressor 11 and the connection pipe 12. That is, the electric component box 15 is disposed so as to straddle the upper ends of both the chambers 8a and 8b in the unit main body 1 partitioned by the partition plate 7.

Further, the electric component box 15 will be described in detail. As shown in FIG. 1, the electric component box 15 has a rectifier and a switch transistor for an inverter on a lower surface side.
Electric control parts that generate a large amount of heat, such as CPU,
A control board P, on which the electric control component S is mounted, is formed of other electric control components such as sensors and transistors, and a component box body 16 for mounting and supporting the control board P.

The component box main body 16 has a mounting support 17 made of a resin molding material for mounting and supporting the control board P on the upper end thereof, an outer peripheral surface of the mounting support 17 and a lower portion together with the mounting support. It comprises a case body 18 made of a metal plate for accommodating the electric control components S oriented in the direction, a mounting support 17 and a lid body 19 covering the upper surface of the case body 18.

Therefore, no electric control component S is exposed on the upper surface of the control board P, and the electric control component S is simply soldered to the control board P. Is only exposed.

As shown in FIG. 3, on the control board P, G.TR as an electric control part S which generates a large amount of heat is provided on one side in the longitudinal direction, and in series with the G.TR. Side by side, a rectifier (rectifier) is implemented.

In order to prevent the heat generated from the electric control parts S having a large amount of heat, such as G · TR and rectch, from being taken into the inside of the component box body 16 as much as possible, they are somewhat removed from the side of the control board P. It is mounted in a protruding state.

A heat conductive adhesive is applied to the outer surfaces of the G · TR and the rectifier S, and the radiator 20 is brought into close contact with the adhesive. Further, a plurality of mounting screws 21 are inserted into the radiator 20 and penetrate the G / TR and the rectifier S.
Is attached to the support portion 22 of the main body.

In this state, the upper end of the radiator 20 and the control board P
A gap is formed between the side edge portion and dust and the like enter the component box body 16 from the gap as it is. Therefore, a gap seal 23 made of a resin mold material is interposed in a gap between the radiator 20 and the edge of the control board P to completely close the gap to prevent the entry of dust and the like.

The radiator 20 is an extruded product of an aluminum material, and has a plurality of cooling fins 20a projecting integrally therewith. These cooling fins 20a ...
The cooling fins protrude over the entire length in the width direction of 0, and the respective cooling fins are radially spread.

As shown in FIG. 2, the mounting support 1
Reference numeral 7 is formed in a rectangular frame shape in a plan view, and its inner dimension slightly exceeds the outer dimension of the control board P. In both side surface portions 17a and 17b along the longitudinal direction, a step-shaped missing portion a is formed only at one side end. On the other side, an inverted U-shaped notch b is provided from the lower edge to the vicinity of the upper edge.

On the inner surfaces of the side portions 17a and 17b, a board receiving piece 24 is provided in a position slightly lower than the upper edge in parallel with the upper edge. This board receiving piece 2
4 is appropriately interrupted, and is hooked in the direction of the upper end edge.
Is protruded. The hooking claw portion 25 and the substrate receiving piece portion 24
Is substantially equal to the thickness of the control board P.

A pressing piece 26 protrudes from the side surface 17c on the inner side along the upper edge. The height position of the holding piece 26 coincides with the height position of the hooking claw 25. The vertical dimension of the side surface portion 17c is smaller than the vertical dimension of the end of the step-shaped notch a.

The opposite side portions 17d are provided on the both side portions 1d.
Although the vertical dimension is the same as 7a and 17b, only the both ends are slightly left, and most of the openings c are U-shaped.
Is provided.

An outlet 27 having a rectangular shape as viewed from above is projected from the lower surface of the side surface 17d. As shown in FIG. 4 only, the opening of the outlet body 27 is directed inward, and only the internal air is led out to prevent the intrusion of water and dust.
8 are provided.

As shown in FIG. 2 again, a plurality of crosspieces 29 project from the lower end of the side surface portion 17d and the lower ends of the side surface portions 17a and 17b, and intersect at substantially the center of the mounting support 17.
Some of the ridges 29 are bent upward, and the side surfaces 17a, 1
7b and 17d are reinforced. These ridges 29 are referred to as rectifying sections from the aspect.

At a substantially central portion of the mounting support 17 at a crossing position of the rectifying portion 29, a support portion 30 is provided so as to protrude upward. The height position of the upper edge of the support portion 30 coincides with the height position of the substrate receiving piece portion 24.

On the other hand, a case receiving piece 31 is projected from a portion of the outer surface of the both side surfaces 17a and 17b, which is lower than the upper edge by a predetermined distance, in parallel with the upper edge. The case receiving piece 31 is provided as appropriate, and a positioning step 32 extending to the lower edge perpendicular to the case receiving piece 31 is continuously provided on the side of the step-shaped notch a.

Further, a plurality of hooking projections 33 are provided on both side portions 17a and 17b at predetermined intervals. Only one side surface portion 17b has a not-shown concave portion having a predetermined width from the vicinity of the upper end portion to the lower end edge on the outer surface side.

A pair of holding parts 34 and 35 are protruded from the upper ends of only the side face part 17b and the side face part 17c. These holding portions 34 and 35 project upward from the upper edge of the mounting support 17.

The control board P is mounted and supported on the mounting support 17. That is, the control board P on which all the electric control parts S are mounted has the electric control parts S oriented downward, and thus the control board P is on the upper side, and the lower side two sides which are both side edges in the longitudinal direction. Is the board receiving piece 24
Placed on top. In this state, the three sides on the upper surface of the control board P are pressed by the hooking claw 25 and the holding piece 26.

At this time, the radiator 20 has already been mounted on the G.TR and the rectifier S mounted on one side of the control board P. These radiators 20 are provided in the opening c of the mounting support side surface 17d.
Fit into. The both ends of one side of the control board P are engaged with the side faces 17d on both sides of the opening c to position the control board P.

The column 30 supports the control board P from below. Therefore, it is possible to suppress the bending deformation of the control board P due to the large number of mounted electric control components S, and to reliably prevent an accident such as disconnection.

The holding parts 34 and 35 are provided with electric control parts S
A bundle of lead wires (compressor lead, fan motor lead, sensor lead, case thermo lead, four-way valve lead, etc.) connected together is stored and held. Therefore, the wiring process around the electric component box 15 can be obtained in a neat state.

On the other hand, as shown in FIGS. 1 and 4, the case body 18 has a lower surface 18a, both side surfaces 18b and 18c along the longitudinal direction, and both side surfaces 18b along the short direction.
d, 18e.

The total length of both side portions 18b and 18c is determined by the side portion 17 of the mounting support 17 where the outlet 27 is provided.
The length from d to the positioning step 32 of both side portions 17a and 17b is the same as the length dimension. Its height dimension is 1 on both sides.
The height from the case receiving piece 31 of 7a, 17b to this lower edge may be at least equal to, and may be slightly greater than, the margin. The total length dimension of both side portions 18d and 18e is
It matches the total length of both side portions 17c and 17d of the mounting support 17. The height dimension will be described later.

Each of the side portions 18b, 18c has a pair of hooking claws 36, 36 provided at the upper end thereof at a distance from each other, and a plurality of rectangular hooking holes 37 at predetermined intervals. ... are provided.

An extruded portion 38 extruded in an R shape is provided on one side portion 18b. This extruded part 38
The lower end 18a side end is opened, and the upper end is closed in a bag shape. Accordingly, air can freely flow from the lower end opening of the push-out portion 38 into the case body 18.

A series of slits 39 for leading out internal air is provided between the pushing section 38 and the end on the side face section 18e. The internal air outlet slit 39 is opened toward the pushing section 38. In other words, the pushing portion 38 is provided in front of the internal air outlet slit 39 in the air outflow direction.

The rectangular recess 40 is formed only in the facing side portion 18c. The lateral width of the concave portion 40 matches the lateral width of a concave portion (not shown) provided on the side surface portion 17 b of the mounting support 17.

The side surface portion 18d is bent from the lower surface portion 18a, and its bending width is less than half of the side surface portions 18b and 18c, and the other portions are opened. This side part 18
A pair of triangular cut-and-raised portions 41 is provided at d, and the base end of the SL connector mounting plate 42 is inserted and fixed with screws.

The SL connector mounting plate 42 includes a portion that is mounted on the side wall portion 18d of the case body, a portion that once extends flush with the lower surface portion 18a of the case body, and a portion that extends obliquely downward. The SL connector 43 is attached to the obliquely inclined portion.

The opposite side portion 18e is bent inward only at both side ends, and the remaining portion is opened. The lower edge extends from the lower surface 18a, and forms a hook 44 that is bent in parallel with the side 18e with a small gap.

On the lower surface portion 18a, a rectangular projecting surface portion 45 is formed so as to protrude toward the outer surface (lower surface). This protruding surface portion 45
It is provided along the side surface portion 18c, and is close to a side surface portion 18d which is a space approximately half in the longitudinal direction.
Slits 46 for introducing cooling air are provided in a row.

In the lower surface portion 18a, similarly shaped slits 47 for introducing cooling air are provided in a row in parallel with the slits 46. Each slit 47 is located at a position close to the SL connector mounting plate 42, and each opening is opposed to the SL connector mounting plate.

Further, on the lower surface portion 18a, the side surface portion 18 is provided.
A rectangular opening 48 is provided along e. L-shaped pressing pieces 49, 49 are formed on both sides of the opening 48 by being cut and raised on the outer surface side.

The case body 18 thus formed is mounted so as to cover the outer surface of the mounting support 17 as described above. That is, the plurality of engaging holes 37 of the case body side surface portions 18b, 18c are formed by the engaging projections 3 provided at positions facing the mounting support 17.
3 are inserted. Recess 40 of case body side portion 18c
Is engaged with a concave portion (not shown) of the mounting support 17. In this state, the upper edges of the side surfaces 18b and 18c are hooked on the mounting support case receiving piece 31, and the side edges are hooked on the positioning piece 32.

Further, the case body side surface portion 18e is engaged with the opposed side surface portion 17d of the mounting support 17. The other side portion 18d is engaged with the mounting support lacking portion a,
The lower surface portion 18a closes the lower surface opening except for the missing portion a.

Therefore, the case body 18 can be mounted on the mounting support 17 without using a mounting tool such as a screw, and the case body 18 can be accurately positioned in the longitudinal direction, the short direction, and the vertical direction. It is engaged in a state where positioning has been performed.

At the same time, the case body hooking portion 44 is hooked on the lower end of the radiator 20, and clamps the end of the radiator 20 with the side surface 18e. Opening 4 of case body lower surface 18a
A mounting support outlet 27 is inserted into 8. The pressing pieces 49 on both sides of the opening 48 are positioned on the lower surface of the outlet 27 so as to be positioned. The opening of the outlet 27 protrudes from the case body lower surface 18a and opens toward the slits 46 and 47 and the SL connector mounting plate 42 on the inner side.

Since the protruding portion 45 is provided on the same lower surface portion 18a, the contact with the electric control component S mounted on the control board P and directed downward is prevented, and an appropriate gap is formed. The use air is smoothly guided to improve the cooling efficiency of the electric control parts.

In addition, as shown in FIG.
Due to the setting of the length in the longitudinal direction between the mounting support 17 and the mounting support 17, one end of the mounting support 17 protrudes outward beyond the end of the case body 18 and partially overhangs.

An opening 50 is formed in the overhang portion from the vertical dimension setting of these side portions 17c and 18d, and a part of the control board P and the electric control component S are formed.
A part will be exposed. Utilizing the opening 50, a power cord connected to the electric control component S, a lead wire extending from the electric control component S to the SL connector 43, and connected thereto are inserted.

Thus, even when the case body 18 is mounted on the mounting support 17, the upper surface of the control board P is completely exposed. The lid 19 shields an upper surface exposed portion of the control board P.

As shown in FIGS. 1 and 4, the lid 19 is formed so as to have a rectangular upper surface 19a corresponding to the upper opening of the mounting support 17 and to be folded around the upper surface. Side portions 19b to 19e are provided.

Four circular projections 51 are provided on the upper surface 19a at vertically and horizontally symmetric positions. Both sides 19b, 19
c is an escape portion (not shown) for having the same bending width, and for escaping contact with the mounting support holding portions 34, 34 in a state where only the one side portion 19c is assembled with the lid body 19 in the case body 18. Is provided.

The side surface portion 19d includes a portion bent to both side ends and a portion slightly bent from the upper surface portion 19a. The opposing side surface portion 19e is formed by bending from the upper surface portion 19a.
And is larger than the bending width of the opposing side surface portion 19e.

As shown in FIG. 1 and FIG.
The insulating sheet 52 shown in FIG. The insulating sheet 52 has an upper surface portion 5 having the same shape area as the lid upper surface portion 19a.
2a and a side surface 52b having the same bending width as the lid side surface 19d.
52d, and a side surface portion 52e having the same shape as the lid side surface portion 19e.

A rectangular projection 53 projecting upward is provided on one side of the upper surface 52a, and circular projections 54 each having three rows and columns are provided in the remaining space. The protruding heights of the projections 53 and 54 are the same.

Note that a sheet 55 that is difficult to track is interposed between the insulating sheet 52 and the control board P, and this sheet is attached to the insulating sheet 52 side. The side surfaces 52b to 52e of the insulating sheet 52 are engaged with the corresponding side surfaces 19b to 19e of the lid 19, respectively. Four of the circular projections 54 are engaged with the circular projections 51 of the lid upper surface portion 19a, thereby ensuring reliable positioning of the insulating sheet 52.

The lid 19 on which the insulating sheet 52 is hung is mounted on the mounting support 17 on which the control board P is mounted and on the case body 18 covering the mounting support 17. That is, the lid side surface portion 52e faces the radiator 20 mounting side, and is directly covered.

The inner surfaces of both side portions 19b and 19c of the lid are engaged with the outer surfaces of the case receiving piece 31 and the outer surfaces of the case side portions 18b and 18c of the mounting support side portions 17a and 17b. 36 elastically presses down.

The inner surface of the lid side surface portion 19d is engaged with the outer surface of the mounting support side surface portion 17c, and is inserted into a gap between the holding portions 35 provided there. Opposite side parts 1
9e engages with the end of the radiator 20 and slightly projects from the case body side surface 18e. However, since the gap seal 23 fills the gap between the radiator 20 and the control board P on this protruding side, there is no slight gap to the inside.

In this case as well, attachment and detachment of the lid 19 is extremely easy. That is, when attaching the lid 19, if the side surface 19e provided with the opening is pressed in accordance with the radiator 20, the attachment is completed with one touch. The lid 19 can be easily removed by pushing up the projecting portion of the lid 19 on the radiator 20 side.

The projections 53, 54,... Provided on the insulating sheet 52 are in contact with the inner surface of the lid upper surface portion 19a, and can withstand the pressure from the upper portion of the lid 19 in this state.

The electric component box 15 is placed on the upper end of the partition plate 7 as described above with reference to FIG. A blower 10 is arranged together with the heat exchanger 9 in a chamber 8a where the radiator 20 projects, and performs a blowing action toward the blow grill 2 of the front panel 3 with the refrigeration cycle operation.

Therefore, the pressure in the chamber 8a is reduced to a negative pressure, and cooling air is blown to the radiator 20, so that a sufficient heat radiation effect can be obtained. Moreover, since the cooling fins 20a projecting over the entire length in the width direction of the radiator 20 are radially spread from each other, the amount of air flowing between the fins increases, and a more complete heat radiating effect is achieved.

The case body side portion 18 located in the chamber 8a
The air inside the component box main body 16 that has been heated by the heat dissipated from the electric control component S is led out from the slit 39 of b to prevent the internal temperature from rising.

[0092] An extruding portion 38 is protruded in the opening direction of the slit 39. Since the extruding portion 38 is pressed against the front panel 3 in a state where the electric component box 15 is arranged in the unit main body 1, The communication between the chambers 8a and 8b on the side of the case body side portion 18b is prevented, and the inflow of air into the opening of the slit 39 is prevented.

The heated air inside the component box main body 16 flows out of the outlet 27 protruding from the case body lower surface 18a. The baffle 28 provided at the opening of the outlet 27 can prevent water droplets and dust from entering, and contribute to improvement in reliability without adhering to the internal electric control parts S.

Further, cooling air is introduced into the interior of the component box main body 16 from the two rows of slits 46 and 47 provided on the lower surface portion 18a of the case body, and cools the electric control components S to prevent a temperature rise.

The slits 46 and 47 are open to face the SL connector mounting plate 42, so that the SL connector mounting plate 42 is located on the cooling air introduction side. Moreover, the mounting plate 42 is bent obliquely downward,
The SL connector mounting plate has a draining function of preventing water droplets from entering the component box main body 16 through the slits 46 and 47.

In particular, the rectifying section 29, which also serves as reinforcement, provided on the mounting support 17 rectifies the cooling air introduced into the interior of the component box body 16 from the slits 46, 47 and guides the cooling air to the electric control component S. And the cooling efficiency is further improved.

As described above, the electric component box 15 is disposed so as to straddle the chambers 8a and 8b, and the slits 46,
The cooling air is guided into the box from the opening 47 and the opening 50, and is rectified by the rectifying section 29 and the air flows out from the outlet 27 and the slit 39 on the chamber 8a side. The cooling air flowing in the box efficiently cools the electric control component S in combination with the downward direction in which the air flow passage in the box is formed.

Since a sheet 55 made of a material resistant to tracking is interposed on the control board P side of the insulating sheet 52 interposed between the lid 19 and the control board P, for example,
Can withstand a high voltage even if it comes into contact with the control board P.

The control board P on which the electric control components S are mounted may be housed in the insulating sheet 52, and may be sealed with resin as it is and integrated with the control board P. In this state, all the soldered portions of the electric control component S to the control board P are sealed with resin, so that the configuration is extremely resistant to salt damage.

[0100]

As described above , according to the present invention ,
Electrical control components, including electrical control components that generate a large amount of heat, such as rectifiers and inverter switching transistors, are mounted on the control board and housed downward in the component box body, simplifying wiring processing. , As well as the ease of assembly and service as an electrical parts box,
Since all the electric control parts face downwards where the air flow passage in the box is formed, there is no need to set up a complicated air flow passage, and the cooling efficiency can be improved without increasing the number of cooling openings. It has effects such as improvement. Furthermore, the parts box body
The mounting support for the resin mold material and the case body of the metal plate
With the double structure, the rigidity of the parts box body is secured,
Ensure protection of the electrical component boxes and control boards contained inside.
In addition to realizing, it has the effect of cutting off noise
You.

[0102] In addition, limiting the shape structure of the radiator, the
Since the mounting structure is employed, an effect is obtained in that the cooling efficiency can be improved particularly for electric control parts that generate a large amount of heat.

[0102]

Further, since the control board mounting structure of the mounting support, the rectifying structure and the wiring holding structure are limited, reliable holding of the control board, reduction of stress, improvement of cooling efficiency for electric control parts, and improvement of wiring processing are achieved. It has effects such as simplification.

Further, the cooling air introduction structure of the case body and
The structure for preventing the intrusion of water and water droplets is limited, so that the rigidity of the component box body is ensured, cooling of the electric control components can be performed efficiently, and the intrusion of water droplets is prevented, thereby improving the reliability.

Further, since the cover is detachably attached to the upper surface of the control board, the control board is shielded by the cover and the control board is protected. Furthermore, since an insulating sheet is interposed between the lid and the control board to limit this configuration, the control board is thermally and electrically insulated from the control board. Furthermore, since the control board is resin-sealed on the insulating sheet, an effect of increasing the reliability of the control board against salt damage is achieved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electric component box, showing an embodiment of the present invention.

FIG. 2 is a perspective view of a mounting support constituting the electric component box, showing the embodiment.

FIG. 3 is an exemplary perspective view of the embodiment, in which a radiator is disassembled from a control board and a mounting support;

FIG. 4 is an exemplary perspective view of the electric component box showing the embodiment;

FIG. 5 is an enlarged longitudinal sectional view of the insulating sheet, showing the embodiment.

FIG. 6 is a perspective view showing the same embodiment, in which a part of an outdoor unit of the air conditioner to which an electric component box is attached is cut away.

[Explanation of symbols]

11 ... Compressor, 9 ... Heat exchanger, 10 ... Blower, 1 ... Unit body, 15 ... Electrical parts box, S ... Electrical control parts, P ...
Control board, 16: parts box main body, 20: radiator, 20a ...
Cooling fins, 23: gap seal, 17: mounting support,
18 ... case body, 30 ... pillar part, 29 ... rectification part, 34,
35 ... holding part, 47 ... (for introducing cooling air) slit, 4
5 Projection surface, 46 Slit (for introducing cooling air), 42
... SL connector mounting plate, 48 ... Case body opening, 27
… Outlet body, 39… (for internal air outlet) slit, 38
... Extrusion part, 19 ... Lid, 52 ... Insulating sheet, 54,5
5. Projection, 55 ... (Tracking difficult) sheet.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-147555 (JP, A) JP-A-7-103511 (JP, A) JP-A-3-263532 (JP, A) JP-A-63-1988 290337 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 5/00

Claims (10)

(57) [Claims] 1. A compressor, a heat exchanger, a unit main body containing a blower and the like disposed opposite to the heat exchanger, and a unit disposed in the unit main body for driving the compressor, the blower and the like. An outdoor unit for an air conditioner, comprising: an electric component box that accommodates an electric control component for controlling, wherein the electric component box includes an electric control component that generates a large amount of heat, such as a rectifier and a transistor for a switch of an inverter. A control board on which electrical control components are mounted, and a resin molding material for mounting and supporting the peripheral portion of the control board
And a mounting support provided on the mounting support.
A support for receiving the control board from below;
Electrical control parts together with the support, covering the outer peripheral surface of the holder
And a case body made of a metal plate that houses the control board, the control board being located at an upper part, and a component box body that houses all the electric control components in a downward direction in which an air flow passage in the box is formed. An outdoor unit for an air conditioner, comprising: 2. An electric control component having a large heat value is mounted on a side of the control board, and a plurality of cooling fins are integrally formed on the electric control component having a large heat value. Is
The outdoor unit of an air conditioner according to claim 1, wherein a radiator attached is provided. 3. The outdoor unit of an air conditioner according to claim 1 , wherein said mounting support has a rectifying portion which also serves as reinforcement and rectifies air guided inside. Wherein said mounting support, claim a portion is protruded from the case body, the protruding portion, which is a holding portion for accommodating and holding the lead wire connected to the electronic control module 2. The outdoor unit of the air conditioner according to 1 . 5. The case body has cooling air on its lower surface.
A slit for introduction is provided, and an SL connector mounting plate is mounted .
The outdoor unit of an air conditioner according to claim 1, wherein the slit is positioned on the cooling air introduction direction side of the slit. 6. The case body has an opening at a lower surface thereof, and the mounting support is inserted into the case body opening and protrudes from the case body lower surface. The outdoor unit of an air conditioner according to claim 1 , further comprising an outflow body for taking out air. 7. The component box main body includes a lid detachably attached to an upper surface of the control board.
The outdoor unit of the air conditioner according to claim 1 . 8. The outdoor unit of an air conditioner according to claim 7 , wherein an insulating sheet is interposed between the lid and the control board. 9. The insulating sheet is 請 that comprising the projections to withstand the pressure from the upper to the upper surface
The outdoor unit of the air conditioner according to claim 8 . 10. The insulating sheet accommodates a control board on which the electric control component is mounted, and is resin-sealed.
The outdoor unit of an air conditioner according to claim 8 , wherein the outdoor unit is integrated with a control board.