JPH0960928A - Outdoor device of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outdoor device of an air conditioner in which a miniaturization of an electrical component box is promoted, a cooling efficiency in respect to electrical control elements stored in the box is improved, dust is prevented from entering the box, a stress applied to a control substrate is reduced and assembling and service workability can be improved with the electrical element box. SOLUTION: In this outdoor device there are provided a compressor, a heat exchanger, a device main body for storing a blower or the like arranged to be faced against the heat exchanger and an electrical element box 15 arranged within the device main body and for storing an electrical control component S for use in driving and controlling the compressor and the blower or the like. The electrical element box is comprised of a control substrate P on which all the electrical control components are practically installed and a component box main body 16 having the control substrate fixed and supported thereon, having the control substrate positioned at its upper part and also storing all the electrical control components while being directed in a downward direction.

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 the configuration of an electric parts box arranged inside the outdoor unit.

[0002]

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

The outdoor unit includes an outdoor heat exchanger,
It is provided with a compressor, valves such as a four-way valve, a blower, and an electric parts box that houses electric control parts that electrically control the compressor and the blower.

Recently, the frequency control of the compressor is generally used as the refrigeration cycle control. Therefore, the electric control parts are giant transistors as switching transistors of CPU, capacitors, transformers, rectifiers and inverters. (Hereinafter referred to as G / TR), a control board (PC board) and many other parts.

In particular, the above-mentioned G.TR has a large amount of heat radiation due to the switching action, and if it is housed in a sealed electrical parts box, the inside of the box will have an abnormally high temperature. It has a bad thermal effect on the parts.

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

[0007]

As described above, basically, all the electric control parts other than the radiator are housed in the electric part box. However, for example, as disclosed in Japanese Patent Application No. 5-251795 by the present applicant, a capacitor, a rectifier and a G.
TR etc. are not mounted on the control board.

This is because the electric component box is formed in a thin box shape in plan view, which is long in the vertical and horizontal directions and short in the depth direction, because of the arrangement space of the electric component box. Due to being housed in.

That is, since the control board is formed in a large thin box shape in the vertical and horizontal directions, it is not possible to mount relatively large capacitors, rectifiers and electric control parts such as G / TR, and these are separately arranged. However, they are electrically connected to each other via lead wires.

Therefore, the number of lead wires between the control board and the electrical control parts not mounted on the control board increases,
The wiring process is complicated, and the degree of freedom in arranging the control board is low, which prevents the miniaturization of the electric component box itself.

In addition, due to this arrangement limitation, the control board and G
・ It is not necessarily arranged in the same direction as TR and capacitors, and many cooling slits must be opened in order to efficiently cool the electrical control components in all electrical component boxes. The larger the number of openings, the greater the amount of dust entering the electric parts box.

[0012] As described above, if an attempt is made to sufficiently cool the inside of the electric component box, there is a problem that it is difficult to prevent the intrusion of dust into the box. The present invention has been made in view of the above circumstances, and an object thereof is to promote miniaturization of an electric component box, improve cooling efficiency for an electric control component housed inside, and intrude dust. The present invention aims to provide an outdoor unit for an air conditioner equipped with an electric component box that can prevent the above-mentioned problems, reduce the stress applied to the control board, and improve the assembly and service workability.

[0013]

An outdoor unit of an air conditioner according to the present invention for satisfying the above object is, as claimed in claim 1, a compressor, a heat exchanger, and an air conditioner arranged opposite to the heat exchanger. Outdoor unit of an air conditioner including a unit main body that accommodates a blower and the like, and an electric component box that is disposed in the unit main body and that accommodates electrical control components for driving and controlling the compressor, the blower, and the like. In the electric component box, the control board on which all the electric control parts are mounted, the control board is mounted and supported, and the control board is located on the upper side. The component box main body is housed in a downward direction in which the flow passage is formed.

According to a second aspect of the present invention, the control board according to the first aspect is provided with an electric control component having a large amount of heat generation mounted on a side portion thereof, and the electric control component having a large heat generation amount has a radiator. It is characterized in that a gap seal is provided in a gap formed between the radiator and the side edge portion of the control board.

According to a third aspect of the present invention, the radiator according to the second aspect is characterized in that a plurality of cooling fins are integrally provided so as to project, and the cooling fins are radially spread with respect to each other. According to a fourth aspect of the present invention, the component box body according to the first aspect includes a mounting support made of a resin molding material for mounting and supporting the control board, an outer peripheral surface of the mounting support, and an electrical control together with the mounting support. And a case body made of a metal plate for accommodating components.

According to a fifth aspect of the present invention, the mounting support according to the fourth aspect mounts and supports the peripheral portion of the control board. A sixth aspect of the present invention is characterized in that the mounting support according to the fourth aspect includes a column portion that receives the control board from below.

A seventh aspect of the present invention is characterized in that the mounting support according to the fourth aspect is provided with a rectifying portion which also serves as a reinforcement and which rectifies the air introduced therein. According to an eighth aspect of the present invention, the mounting support according to the fourth aspect has a part thereof protruding from the case body, and the protruding portion is a holding portion for accommodating and holding a lead wire connected to the electric control component. Characterize.

As a ninth aspect, the case body according to the fourth aspect is characterized in that a slit for introducing cooling air to the electric control component is provided on a lower surface portion thereof. Claim 10
According to another aspect of the present invention, the case body is provided with a projecting surface portion on a lower surface portion thereof for preventing the electric control component from hitting.

According to an eleventh aspect, the projecting surface portion of the lower surface portion of the case body according to the tenth aspect is provided with a slit for introducing cooling air. As the twelfth aspect, the case body according to the ninth and eleventh aspects is provided with an SL connector mounting plate on a lower surface portion thereof, and the SL connector mounting plate is a cooling air for the slit provided on the lower surface portion of the case body. The feature is that the position is set on the introduction direction side.

According to a thirteenth aspect, the case body according to the fourth aspect is provided with an opening portion in a lower surface portion thereof, and the mounting support body is inserted into the case body opening portion so as to extend from the lower surface portion of the case body. It is characterized in that it is provided with an outflow body that is projected and leads out the internal air from this protruding portion.

As a fourteenth aspect, the case body according to the fourth aspect is characterized in that a slit for introducing the internal air is provided in a part of a peripheral surface thereof. As claim 15, claim 1
The case body described in No. 4 is characterized in that a push-out portion is provided in front of the internal air outlet slit in the air outflow direction.

A sixteenth aspect of the present invention is characterized in that the component box body according to the first aspect includes a lid body detachably attached to an upper surface portion of the control board. According to a seventeenth aspect of the present invention, the lid body according to the sixteenth aspect is characterized in that an insulating sheet is interposed between the lid body and the control board.

According to an eighteenth aspect, the insulating sheet according to the seventeenth aspect is characterized in that the upper surface side thereof is provided with a protrusion for withstanding pressure from above. A nineteenth aspect of the present invention is characterized in that a tracking-resistant sheet is interposed between the insulating sheet and the control board according to the seventeenth aspect.

According to a twentieth aspect of the invention, the insulating sheet according to the seventeenth aspect of the invention is characterized in that it accommodates a control board on which the electrical control component is mounted and is resin-sealed to be integrated with the control board.

By providing the means for solving the above problems, in the invention of claim 1, all the electric control parts are mounted on the control board, the wiring process is simplified, and the assembly workability and service as the electric part box are improved. In addition to improving the performance, all electric control parts face downward in the box where the air flow passage is formed, so it is not necessary to set a complicated air flow passage and the number of cooling openings is not increased. However, the cooling efficiency is improved.

Further, the electric component box itself becomes a thin box shape in the vertical direction, which increases the degree of freedom of arrangement in the outdoor unit. According to the second and third aspects of the invention, the cooling efficiency is particularly good for the electrical control component that generates a large amount of heat.

In the invention of claim 4, the component box main body has a double structure of a mounting support of a resin molding material and a case body of a metal plate to secure rigidity, and an electrical component box or control housed inside. Ensures protection for the board and blocks noise.

According to the fifth to eighth aspects of the invention, the mounting support can efficiently hold the control board and cool the electric control parts, and facilitate the wiring process.

In the ninth to fifteenth aspects of the invention, the case body secures the rigidity of the component box main body and efficiently cools the electric control components housed inside.
Prevents dust from entering the parts box body.

In the sixteenth aspect of the present invention, the upper surface of the control board, which is the back surface side, is covered with the lid to protect the control board. According to the seventeenth invention to the nineteenth invention, the insulating sheet between the lid and the control board provides thermal and electrical insulation and a pressure resistance effect. According to the twentieth aspect of the invention, the reliability of salt damage is enhanced by resin-sealing the insulating sheet on the control substrate.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 shows an outdoor unit that constitutes an air conditioner. In the figure, reference numeral 1 denotes a unit main body which is an outer casing, and 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, a back plate 6 and a bottom plate not shown here. Is composed of a combination with a 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 room 8a.
An outdoor heat exchanger 9 formed in a plane L shape is arranged along the back plate 6. And in the remaining space,
The blower 10 is arranged.

A compressor 11 is arranged in the partitioned other chamber 8b, and a pipe 12 connected to the compressor 11 and valves 13 such as a four-way valve and an expansion valve (not shown) are housed therein. A cover plate 14 for covering 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 electrical component box 15 is placed in this notch 7a. The electric component box 15 is formed in a thin box shape that is thin in the vertical direction and large in the horizontal direction and the depth direction.

One end of the electrical component box 15 extends from the partition plate 7 to the vicinity of the blower 10 on the side of the one chamber 8a, and the other end of the other chamber 8
It is extended to the upper part of the compressor 11 and the connecting pipe 12 of b. That is, the electric component box 15 is arranged so as to straddle the upper ends of both chambers 8a and 8b in the unit 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 includes a control board P on which all electric control components S are mounted on the lower surface side,
A component box body 16 for mounting and supporting the control board P is provided.

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

Therefore, a little electric control component S is not exposed on the upper surface of the control board P, and a leg for mounting the electric control component S which is simply soldered to the control board P (not shown in the figure). Is only exposed.

As shown in FIG. 3, on the control board P, G.TR, which is an electric control component S having a large amount of heat generation, is connected to one side of the longitudinal direction of the control board P 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 component S having a large amount of heat such as G · TR and rectification from being taken into the component box body 16 as much as possible, these are to some extent from the side of the control board P. It is mounted in a protruding state.

A heat-conducting adhesive is applied to the outer surfaces of the G · TR and the rectifier S, and the radiator 20 is brought into close contact therewith. Further, a plurality of mounting screws 21 ... Are inserted into the radiator 20 and penetrate the GTR and the rectifier S to dissipate the radiator 20.
Is attached to the support portion 22 of.

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 if left as it is, dust or the like will enter the component box body 16. Therefore, a gap seal 23 made of a resin molding material is provided in the gap between the radiator 20 and the side edge portion of the control board P to completely close the gap and reliably prevent the intrusion of dust and the like.

The radiator 20 is an extruded product of an aluminum material, and a plurality of cooling fins 20a ... Are integrally projected. These cooling fins 20a ...
The cooling fins are provided so as to project over the entire length in the width direction of 0 and the mutual cooling fins are radially expanded.

As shown also in FIG. 2, the above-mentioned mounting support 1
7 is formed in a rectangular frame shape in a plan view, and the inner dimension thereof is slightly larger than the outer dimension of the control board P. The side surface portions 17a and 17b along the longitudinal direction have stepped cutout portions a only at one side end portion. An inverted U-shaped missing portion b is provided on the other side from the lower edge to the vicinity of the upper edge.

On the inner surface sides of the both side surface portions 17a, 17b, a board receiving piece portion 24 is provided in a portion slightly lower than the upper edge so as to be parallel to the upper edge. This board receiving piece 2
4 is cut off as appropriate, and hooks 25 are hooked toward the upper edge.
Is projected. The hooking claw portion 25 and the board receiving piece portion 24
The distance between and substantially coincides with the plate thickness of the control board P.

The side surface portion 17c is provided with a pressing piece portion 26 projecting on the inner surface side along the upper edge. The height position of the pressing piece portion 26 matches the height position of the hooking claw portion 25. The vertical dimension of the side surface portion 17c is smaller than the vertical dimension of the end of the stepped missing portion a.

The opposite side surface portions 17d are the side surface portions 1 described above.
7a and 17b have the same vertical dimension, but only the side edges are slightly left, and most of them are U-shaped openings c.
Is provided.

On the lower surface of the side surface portion 17d, a rectangular outlet body 27 is provided so as to project in a top view. As shown only in FIG. 4, the opening of the outlet body 27 is directed inward, only the internal air is drawn out, and the baffle plate 2 for preventing 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 both side surface portions 17a and 17b, and intersect at the substantially central portion of the mounting support body 17.
A part of the bottom part 29 is bent upward, and each side part 17a, 1
Reinforce 7b and 17d. Due to their form, these shell parts 29 are called rectifying parts.

A column portion 30 is provided so as to project upward at a substantially central portion of the mounting support body 17, which is an intersecting position of the rectifying portion 29. The height position of the upper end edge of the column portion 30 coincides with the height position of the substrate receiving piece portion 24.

On the other hand, on the outer surface side of the both side surface portions 17a, 17b, a case receiving piece portion 31 is provided in parallel with the upper end edge, at a position lower than the upper end edge by a predetermined distance. The case receiving piece portion 31 is provided so as to be appropriately interrupted, and a positioning step portion 32 that extends orthogonally to the case receiving piece portion 31 and extends to the lower end edge is continuously provided on the stepped missing portion a side.

Furthermore, a plurality of hooking projections 33 are provided at predetermined intervals on both side surfaces 17a, 17b. Only on one side surface portion 17b, a concave portion (not shown) having a predetermined width is formed on the outer surface side from the vicinity of the upper end portion to the lower end edge.

Only the side surface portion 17b and the side surface portion 17c are provided with a pair of holding portions 34 and 35 at the upper ends thereof. These holding portions 34 and 35 project upward from the upper edge of the mounting support body 17.

The control board P is mounted and supported on such a mounting support body 17. That is, the control board P on which all the electric control components S are mounted has the electric control components S facing downward, and thus the control board P is on the upper side, and the lower surface side two side portions which are both end edges in the longitudinal direction. Is the board receiving piece 24
Placed on top. In this state, the upper side three sides of the control board P are pressed by the hooking claws 25 and the pressing pieces 26.

At this time, the radiator 20 is already attached to the G.TR and the rectifier S which are mounted on one side of the control board P, and these are installed in the opening c of the side surface 17d of the mounting support.
Fit in. Both side ends of one side of the control board P are engaged with the side surface portions 17d on both sides of the opening c, and the control board P is positioned.

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

The holding portions 34 and 35 are the electric control parts S.
A bundle of lead wires (compressor lead, fan motor lead, sensor lead, case thermo lead, four-way valve lead, etc.) that are connected to is bundled together and stored. 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 portion 18a, side surface portions 18b and 18c along the longitudinal direction, and side surface portions 18 along the lateral direction.
d, 18e.

The overall lengths of the side surface portions 18b and 18c are the same as those of the side surface portion 17 on which the outlet 27 of the mounting support 17 is provided.
It is the same as the length dimension from d to the positioning step portion 32 of both side surface portions 17a and 17b. Its height is 1 on both sides
The height dimension from the case receiving piece portion 31 of 7a, 17b to the lower end edge may be at least equal, and there may be a margin to slightly exceed it. The overall length of both side surfaces 18d and 18e is
It is equal to the overall length dimension of both side surface portions 17c and 17d of the mounting support body 17. The height dimension will be described later.

The side surface portions 18b, 18c are provided with a pair of locking claw portions 36, 36 spaced apart from each other at their upper ends, and a plurality of rectangular engaging holes 37 are provided at predetermined intervals. ... is provided.

An extruded portion 38 extruded in an R shape is provided on one side surface portion 18b. This pushing part 38
The lower end 18a side end is opened and the upper end is closed like a bag. Therefore, air can freely flow from the lower end opening of the pushing portion 38 to the inside of the case body 18.

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

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

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

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

The opposite side surface portions 18e are bent inward only at both side end portions, and the remaining portions are opened. The lower edge extends from the lower surface portion 18a and serves as a hook portion 44 that is bent in parallel with the side surface portion 18e with a narrow gap.

A rectangular projecting surface portion 45 is formed on the lower surface portion 18a so as to project to the outer surface (lower surface) side. This projecting surface portion 45 is
It is provided along the side surface portion 18c, and is brought close to the side surface portion 18d which is a half space in the longitudinal direction,
Slits 46 for introducing cooling air are provided in a line.

On the lower surface portion 18a, parallel to the slits 46, slits 47 of the same shape for introducing cooling air are provided in a line. All the slits 47 are located close to the SL connector mounting plate 42, and the openings of the slits 47 face the SL connector mounting plate.

Furthermore, the lower surface portion 18a has the above-mentioned side surface portion 18
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 attached so as to cover the outer surface side of the attachment support body 17 as described above. That is, the plurality of engaging hole portions 37 ... Of the case body both side surface portions 18 b, 18 c are provided with the engaging protrusions 3 provided at the positions facing the mounting support body 17.
3 is inserted. Recess 40 of case body side surface portion 18c
Engages with a recess (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 opposing side surface portion 17d of the mounting support body 17. The other side surface portion 18d is engaged with the mounting support missing portion a,
The lower surface portion 18a closes the lower surface opening portion excluding the missing portion a.

Therefore, in particular, the case body 18 can be attached to the attachment support body 17 without using a fixture such as a screw, and the case body 18 is accurate in the longitudinal direction, the lateral direction, and the vertical direction. It is engaged in the state where it is positioned.

At the same time, the case body hooking portion 44 is engaged with the lower end portion of the radiator 20 and holds the end portion of the radiator 20 with the side surface portion 18e. The opening 4 of the lower surface 18a of the case body
A mounting support outlet 27 is inserted into the mounting member 8. The pressing pieces 49, 49 at both ends of the opening 48 are hooked on the protruding lower surface of the outflow body 27 for positioning. The opening of the outlet 27 is projected from the lower surface 18a of the case, and is opened toward the slits 46, 47 and the SL connector mounting plate 42 which are inside.

Since the projecting surface portion 45 is provided on the same lower surface portion 18a, it is prevented from hitting the electric control component S mounted on the control board P and directed downward, and an appropriate gap is formed to cool it. The working air is smoothly guided to improve the cooling efficiency of the electric control parts.

Further, particularly as shown in FIG. 4, the case body 1
Due to the setting of the longitudinal lengths of the mounting support 17 and the mounting support 17, one end of the mounting support 17 protrudes further outward than the end of the case 18 and partially overhangs.

Then, the opening 50 is formed in the overhang portion due to the vertical dimension setting of the side surface portions 17c and 18d, and the control board P part and the electric control component S are formed.
Part of it will be exposed. Using 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.

In this way, even if the case body 18 is attached to the attachment support body 17, the upper surface of the control board P is completely exposed. The lid 19 shields the exposed upper surface of the control board P.

As shown in FIGS. 1 and 4, the lid body 19 is formed by folding back a rectangular upper surface portion 19a which coincides with the upper surface opening of the mounting support body 17 and around the upper surface portion. The side surface portions 19b to 19e are provided.

The upper surface portion 19a is provided with four circular protrusions 51 ... In vertical and horizontal symmetrical positions. Both side surfaces 19b, 19
Reference numeral c denotes an escape portion (not shown) having the same bending width, and only one side surface portion 19c escapes the contact with the attachment support holding portions 34, 34 in a state where the lid body 19 is incorporated in the case body 18. Is provided.

The side surface portion 19d is composed of a portion bent to both end portions 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 the bending width is equal to both side surface portions 19b and 19c.
Is smaller than the bending width of the side wall portion 19e, and is larger than the bending width of the opposite side surface portion 19e.

On the inner surface side of the lid body 19, as shown in FIGS.
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 portion 52b having the same bending width as the lid side surface portion 19d.
To 52d and a side surface portion 52e having the same shape as the lid side surface portion 19e.

A rectangular protrusion 53 protruding upward is provided on one side of the upper surface 52a, and further three circular protrusions 54 are provided in the remaining space. The protrusion heights of these protrusions 53 and 54 are the same.

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. Then, the respective side surface portions 52b to 52e of the insulating sheet 52 are engaged with the corresponding inner surface sides of the side surface portions 19b to 19e of the lid body 19. The circular protrusions 51 of the lid upper surface portion 19a are engaged with four of the circular protrusions 54, so that the insulating sheet 52 is reliably positioned.

The lid 19 having the insulating sheet 52 attached thereto is attached to the attachment support 17 having the control board P attached thereto and the case body 18 covering the attachment support 17. That is, the side surface 52e of the lid is opposed to the side where the radiator 20 is attached, and is directly capped.

The inner surfaces of both side surface portions 19b and 19c of the lid body are engaged with the case receiving piece portion 31 of the mounting support side surface portions 17a and 17b and the outer surfaces of the case body side surface portions 18b and 18c, and the outer surfaces thereof are the case body hooking claw portions. It is pressed down elastically by 36.

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 fitted into the gap between the holding portions 35, 35 provided therein. Opposing side part 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 the protruding side, there is no gap to the inside.

Here, too, the attachment / detachment of the lid 19 is extremely easy. That is, when the lid 19 is attached, the attachment can be completed with one touch by pressing the side surface portion 19e provided with the opening in accordance with the radiator 20 side. To remove the lid body 19, the protruding portion of the lid body 19 on the radiator 20 side is pushed up, and the lid body 19 is easily removed.

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

Such an electric parts box 15 is mounted on the upper end portion of the partition plate 7 as described above with reference to FIG. A blower 10 is arranged together with the heat exchanger 9 in the chamber 8a from which the radiator 20 projects, and blows air to the blowout grill 2 side of the front panel 3 with the refrigeration cycle operation.

Therefore, the pressure in the chamber 8a becomes negative, and the cooling air is blown to the radiator 20 to obtain a sufficient heat radiation effect. Moreover, the cooling fins 20a, which are provided so as to project over the entire length in the width direction of the radiator 20, are radially expanded with respect to each other, so that the amount of air blown between the fins is increased and a more complete heat radiation effect is achieved.

The case body side surface portion 18 located in the chamber 8a
From the slit 39 of b, the internal air of the component box body 16 which has been heated to a high temperature by the heat dissipated from the electrical control component S is led out to prevent the internal temperature from rising.

A push-out portion 38 is provided so as to project in the opening direction of the slit 39. Since the push-out portion 38 is pressed against the front panel 3 in a state where the electric component box 15 is arranged in the unit body 1, Communication between the chambers 8a and 8b on the side of the case body side portion 18b is blocked, and air is prevented from flowing into the slit 39 opening.

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

Further, cooling air is introduced into the inside of the component box body 16 through the two rows of slits 46 and 47 provided on the lower surface 18a of the case body to cool the electrical control component S and prevent it from rising in temperature.

These slits 46 and 47 are opened so as to face the SL connector mounting plate 42, so to speak, the SL connector mounting plate 42 is located on the cooling air introduction side. Moreover, this 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 body 16 through the slits 46 and 47.

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

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

Since the sheet 55 made of a material strong against tracking is interposed on the control board P side of the insulating sheet 52 interposed between the lid 19 and the control board P, even if the insulating sheet 52 is used.
Even if the battery contacts the control board P, it can withstand a high voltage.

The control board P on which the electrical control component S is mounted may be housed in the insulating sheet 52, and may be resin-sealed as it is to be integrated with the control board P. In this state, the soldering portion of the electric control component S to the control board P is entirely resin-sealed, so that the structure is extremely resistant to salt damage.

[0100]

As described above, according to the first aspect of the invention, all the electrical control components are mounted on the control board and are housed in the component box body in the downward direction. It simplifies and improves the workability and serviceability of the assembly as an electric parts box, and all the electric control parts face downwards where the air flow path inside the box is formed, so a complicated air flow path is set. It is not necessary to do so, and cooling efficiency is improved without increasing the number of cooling openings.

According to the second and third aspects of the invention, since the shape structure of the radiator is limited and the heat leakage prevention structure is adopted, it is possible to improve the cooling efficiency especially for the electric control parts which generate a large amount of heat. Play.

According to the fourth aspect of the invention, the component box body has a double structure including the mounting support of the resin molding material and the case body of the metal plate. Therefore, the rigidity of the component box body is ensured and the component box body is housed inside. In addition to reliably protecting the electric component box and the control board, the noise can be blocked.

According to the fifth to eighth aspects of the invention, 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 and electrical connection. The effects of improving the cooling efficiency for the control parts and simplifying the wiring process are achieved.

In the ninth to fifteenth aspects of the invention, the cooling air introduction structure, the internal air discharge structure, and the water drop / dust intrusion prevention structure of the case body are limited, so that the rigidity of the component box body is ensured. This has the effect of efficiently cooling the electric control parts, preventing water droplets and dust from entering, and improving reliability.

According to the sixteenth aspect of the invention, since the lid is detachably attached to the upper surface of the control board, the control board is shielded by the lid and the control board is protected. According to the seventeenth invention to the nineteenth invention, the insulating sheet is interposed between the lid body and the control board to limit the structure. Therefore, the control board is thermally and electrically insulated, and the withstand voltage is increased. An effect such as being able to be achieved is achieved. According to the twentieth aspect of the invention, the control board is resin-sealed in the insulating sheet, and therefore, the effect of increasing the reliability of the control board against salt damage is exhibited.

[Brief description of 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 body that constitutes the electrical component box according to the embodiment.

FIG. 3 is a perspective view showing the same embodiment in which a radiator is disassembled from a control board and a mounting support.

FIG. 4 is a perspective view of an electric component box showing the same embodiment.

FIG. 5 is an enlarged vertical sectional view of an insulating sheet showing the same embodiment.

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

[Explanation of symbols]

11 ... Compressor, 9 ... Heat exchanger, 10 ... Blower, 1 ... Unit body, 15 ... Electrical component box, S ... Electrical control component, P ...
Control board, 16 ... Component box body, 20 ... Radiator, 20a ...
Cooling fin, 23 ... gap seal, 17 ... mounting support,
18 ... Case body, 30 ... Strut part, 29 ... Rectification part, 34,
35 ... Holding part, 47 ... (for cooling air introduction) slit, 4
5 ... Projection surface portion, 46 ... (for cooling air introduction) slit, 42
... SL connector mounting plate, 48 ... Case body opening, 27
... Outlet body, 39 ... (for leading out internal air) slit, 38
... Extruded part, 19 ... Lid, 52 ... Insulation sheet, 54, 5
5 ... Projection portion, 55 ... (Difficult to track) sheet.

Claims (20)

[Claims] 1. A unit main body for accommodating a compressor, a heat exchanger, a blower and the like arranged facing the heat exchanger, and a unit main body disposed in the unit main body for driving the compressor, the blower and the like. In an outdoor unit of an air conditioner including an electric component box that accommodates electric control components for controlling, the electric component box includes a control board on which all the electric control components are mounted, and the control board is attached. An air conditioner characterized by comprising: a parts box body which supports and controls the control board at an upper part, and accommodates all the electric control parts in a downward direction in which an air flow passage is formed in the box. Outdoor unit of the machine. 2. An electric control component having a large heat generation amount is mounted on a side portion of the control board, and a radiator is attached to the electric control component having a large heat generation amount. The outdoor unit for an air conditioner according to claim 1, wherein a gap seal is provided in a gap formed between the side edge portion of the control board and the side edge portion. 3. The outdoor unit for an air conditioner according to claim 2, wherein the radiator has a plurality of cooling fins integrally projecting from each other, and the cooling fins are radially spread with respect to each other. 4. The component box body includes a mounting support made of a resin molding material for mounting and supporting the control board, and a metal for covering an outer peripheral surface of the mounting support and accommodating an electrical control component together with the mounting support. The outdoor unit for an air conditioner according to claim 1, further comprising a case body made of a plate. 5. The outdoor unit for an air conditioner according to claim 4, wherein the mounting support mounts and supports a peripheral portion of the control board. 6. The outdoor unit for an air conditioner according to claim 4, wherein the mounting support includes a column portion that receives the control board from below. 7. The outdoor unit for an air conditioner according to claim 4, wherein the mounting support is provided with a rectifying portion that also serves as reinforcement and rectifies the air introduced therein. 8. The mounting support body is partially protruded from the case body, and the projecting portion is a holding portion for storing and holding a lead wire connected to the electric control component. The outdoor unit of the air conditioner according to 4. 9. The outdoor unit for an air conditioner according to claim 4, wherein the case body is provided with a slit for introducing cooling air to the electric control component on a lower surface portion thereof. 10. The outdoor unit for an air conditioner according to claim 4, wherein the case body is provided with a projecting surface portion for preventing contact of the electric control component on a lower surface portion thereof. 11. The projecting surface of the lower surface of the case body is provided with a slit for introducing cooling air.
The outdoor unit of the air conditioner described in 0. 12. The case body is provided with an SL connector mounting plate on a lower surface thereof, and the SL connector mounting plate is positioned on the cooling air introducing direction side of the slit provided on the lower surface of the case body. An outdoor unit for an air conditioner according to claim 9 or 11, characterized by the above. 13. The case body is provided with an opening at a lower surface thereof, and the mounting support is fitted into the case body opening,
The outdoor unit for an air conditioner according to claim 4, further comprising: an outlet body that projects from the lower surface of the case body and discharges internal air from the projecting portion. 14. The case body is provided with a slit for leading out internal air in a part of a peripheral surface thereof.
The outdoor unit of the air conditioner described. 15. The outdoor unit for an air conditioner according to claim 14, wherein the case body is provided with a push-out portion in front of the internal air outlet slit in the air outflow direction. 16. The outdoor unit for an air conditioner according to claim 1, wherein the component box body includes a lid body detachably attached to an upper surface portion of the control board. 17. The outdoor unit for an air conditioner according to claim 16, wherein an insulating sheet is interposed between the lid and the control board. 18. The outdoor unit for an air conditioner according to claim 17, wherein the insulating sheet is provided with a protrusion on its upper surface side to withstand pressure from above. 19. The outdoor unit for an air conditioner according to claim 17, wherein a sheet that is hard to track is interposed between the insulating sheet and the control board. 20. The insulating sheet accommodates a control board on which the electric control component is mounted and is resin-sealed,
The outdoor unit for an air conditioner according to claim 17, wherein the outdoor unit is integrated with a control board.