KR0184698B1 - Outdoor device of airconditioner - Google Patents

Abstract

The present invention relates to the construction of an outlined electrical parts box disposed in an outdoor unit, in particular an outdoor unit of an air conditioner, which promotes miniaturization of the electrical parts box and improves the cooling efficiency of the electrical control parts housed therein. It is an object of the present invention to provide an outdoor unit of an air conditioner equipped with an electrical parts box which aims to prevent dust from entering, reduce stress on the control board, and improve assembly and service workability. And a unit main body (1) for accommodating a heat exchanger, a blower or the like arranged opposite to the heat exchanger, and an electric control part (5) disposed in the unit main body for control of the compressor and the blower. An electrical parts box (15) is provided, wherein the electrical parts box is provided with a control board (P) on which all the electrical control parts are mounted, and supports and supports the control board. It is characterized in that the control panel is located on the top, and has a component box body 16 for receiving all the electrical control components in the downward direction.

Description

Outdoor unit of air conditioner

1 is an exploded perspective view of an electrical parts box showing an embodiment of the present invention.

2 is a perspective view of the attachment support constituting the electrical component box according to the embodiment.

3 is an exploded perspective view of the radiator from the control plate and the attachment support according to the embodiment.

4 is a perspective view of an electrical parts box showing the above embodiment.

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

6 is a perspective view of a part of the air conditioner outdoor unit to which the electric parts box according to the embodiment is attached is broken.

* Explanation of symbols for main parts of the drawings

1: unit body 9: heat exchanger

10 blower 11: compressor

15: electrical parts box 5: electrical control parts

P: Control board 16: Parts box body

17: attachment support 18: case body

19: cover 20: radiator

20a: cooling fin 23: gap seal

27: outlet 29 29: rectifier

30: holding part 34, 35: holding part

38: extruded part 39: (for internal air introduction) slit

42: SL connector mounting plate 45: protrusion

46, 47: (for cooling air supply) Slit 48: case body opening

52: insulated sheet 54, 55: protrusion

55: sheet for tracking jersey

The present invention relates to an outdoor unit of an air conditioner, and more particularly to an improvement in the construction of an electrical component box disposed in an outdoor unit.

An air conditioner that is commonly used is composed of an indoor unit installed in the air control room and an outdoor unit installed outside the building, and the units are connected to each other through a refrigerant pipe or electric wiring.

The outdoor unit is provided with an outdoor parts heat exchanger, a compressor, a valve such as a four-way valve, an electric parts box for accommodating an electric control part for controlling the blower and the compressor or the blower, and the like.

In recent years, the frequency control of a compressor is common when controlling a refrigeration cycle. Therefore, the electric control parts are referred to as giants and transistors (hereinafter referred to as G.TRs) as switching transistors of CPUs, capacitors, transformers, rectifiers and inverters. ), Control board (PC board) and many other components.

In particular, since the G.TR has a large amount of heat dissipation due to a switching action, when accommodated inside a sealed electrical component box, the temperature inside the box is abnormally high, and thermally adversely affects itself and other electrical control parts.

For this reason, the structure which installs a radiator in the outer surface part of an electrical component box, and dissipates heat of G.TR efficiently is adopted. The radiator is made of an aluminum material having excellent heat transfer properties and is obtained by extrusion molding.

As such, the electrical control parts other than the radiator are basically contained in all the electrical parts boxes.

By the way, for example, as disclosed by the present applicant in Japanese Patent Application No. Hei 5-251795, a capacitor, a rectifier and a G.TR, which are relatively large electric control parts, are not mounted on the control board.

This is because in the arrangement space of the electrical parts box, the electrical parts box is long in the vertical direction, the left and the right direction, short inward direction, and formed in a thin box shape in plan view, so that the control board is installed in the installed state.

That is, since the control board is made into a thin box shape in the vertical and horizontal directions, it is not possible to mount relatively large capacitors, rectifiers and electrical control parts such as G.TR, so that they are separately arranged and electrically connected to each other through the lead wires. Connected.

As a result, the number of lead wires between the control board and the electric control parts not mounted thereon increases, which makes the wiring process cumbersome, and the degree of freedom of the control board arrangement is low, thereby preventing the miniaturization of the electric parts box itself.

In addition, due to the limitation of this arrangement, the control board, the G.TR, the condenser, and the like are not necessarily arranged in the same direction, and most cooling slits must be opened to efficiently cool the electrical control parts in all the electrical component boxes. The larger the opening of the slit, the greater the intrusion of dust into the electrical component box.

In this way, if the cooling efficiency of the inside of the electrical component box is sufficient, it is difficult to prevent dust from entering the inside of the box.

The present invention has been made in view of the above circumstances, and an object thereof is to promote the miniaturization of an electrical parts box, to improve the cooling efficiency of the electrical control parts contained therein, and to prevent dust from entering. The present invention aims to provide an outdoor unit of an air conditioner equipped with an electrical parts box which can reduce stress on the control board and improve assembly and service workability.

The outdoor unit of the air conditioner of the present invention for satisfying the above object is a unit body for accommodating a compressor, a heat exchanger and a blower disposed to face the heat exchanger, disposed in the unit body, and driving the compressor and the blower. An outdoor unit of an air conditioner having an electrical parts box for accommodating electrical control parts for controlling, wherein the electrical parts box is attached to and supports a control board on which all of the electrical control parts are mounted; The control panel is installed on the upper side, and has a component box for receiving all the electrical control components facing downwards in which an air flow passage in the box is formed.

An electric control component having a large amount of heat is mounted on the side of the control board, and a heat radiator is attached to the electric control component having a large amount of heat, and a gap seal is provided at an interval formed between the radiator and the side edge of the control panel. Is installed. In this case, the radiator may have a structure in which a plurality of cooling fins are integrally provided, and the cooling fins are radially widened with each other.

The component box body includes an attachment support made of a resin molding material for supporting the control plate, and a case body made of a metal plate covering the outer circumferential surface of the attachment support and accommodating the electrical control parts together with the attachment support.

The attachment support may be any one of the following structures. In other words,

(1) The peripheral edge part of the said control board is attached and supported.

(2) A support portion for receiving the control board from below is provided.

(3) A rectifier for both reinforcement and rectifying air introduced into the interior is provided.

(4) A part thereof protrudes from the case body, and this protrusion is a holding part for holding and holding a lead wire connected to the electric control component.

The case body has a cooling air inlet slit for the electrical control component or a protrusion for preventing a collision of the electrical control component with the lower surface thereof, and the cooling air inlet slit is provided in the protrusion. Further, an SL connector mounting plate is provided on the cooling air inlet direction side of the slit.

The case body has a slit for inducing the internal air on a part of the main surface of the outlet body or the case body which inserts the attachment support and protrudes from the case body bottom part, and induces the internal air from the protruding portion. It may be provided. The case body may be provided with an extruded portion in the air outflow direction forward of the internal air discharge slit.

The parts box main body includes a cover body detachably attached to an upper surface portion of the control board, and the cover body is fitted with an insulating sheet for obtaining insulation between the control boards. The insulating sheet prevents tracking by inserting a projection to withstand the pressure applied from the upper portion on the upper surface side or another sheet between the insulating sheet and the control plate.

The insulating sheet can accommodate a control board on which the electric control component is mounted, and can be sealed and integrated with the control board.

By providing the means for solving the above problems, all electrical control parts are mounted on the control board, which simplifies the wiring process, improves the workability and serviceability of the electrical parts box, and all the electrical control parts in the air flow in the box. Since the passage is directed downward, the complicated air flow passage does not need to be set, and the cooling efficiency is improved even if the cooling openings are not provided a lot.

In addition, the electrical component box itself is also formed in a thin box shape in the vertical direction, and the degree of freedom of arrangement in the outdoor unit is increased.

In particular, the cooling efficiency is improved for the electric control component having a large heat generation amount.

The component box body has a double structure of an attachment support of a resin molding material and a case body of a metal plate, thereby securing rigidity, ensuring protection for an electrical component box or a control board housed therein, and blocking noise.

The attachment support efficiently maintains the control plate, cools the electrical control parts, and facilitates wiring.

In addition, the case body secures the rigidity of the component box body, efficiently cools the electrical control parts accommodated therein, and prevents dust from entering into the component box body.

The upper surface portion, which is the rear surface side of the control board, is shielded with a lid to protect the control board.

The insulation sheet between the lid and the control plate provides thermal and electrical insulation, and a breakdown effect is obtained.

The resin sealing to the control board of this insulating sheet enhances the reliability against salt damage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

6 shows an outdoor unit constituting the air conditioner. '1' in the figure is a unit body which is an outer box, a split body in which the front panel 3 and the top plate 4 on which the draw grill 2 is installed are integrated, the side plate 5 and the back plate 6. And a bottom plate not shown here in combination with the integrated body.

The inside of the unit main body 1 is divided into two by the partition plate 7. In the divided one chamber 8a, the outdoor heat exchanger 9 is formed along the one side plate 5 and the back plate 6 in a planar L shape. The blower 10 is disposed in the remaining space.

The compressor 11 is arrange | positioned at the divided chamber 8b, and the piping 12 connected to this compressor 11, and valves 13, such as a four-way valve and an expansion valve which are not shown in figure, are accommodated.

The cover plate 14 which covers a non-illustrated pack valve is attached to the side plate 5 which opposes this room 8b.

In addition, the upper end of the partition plate 7 is cut off, and the electrical parts box 15 is placed on the cutout 7. The electrical component box 15 is thin and is formed in a thin box shape that is large in the horizontal and vertical directions.

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 thereof is connected to the compressor 11 and the connection pipe (in the other room 8b). 12) It extends to the top. In other words, the electrical component box 15 is arranged over the upper ends of the two chambers 8a and 8b in the unit body 1 divided by the partition plate 7.

In addition, the electrical component box 15 is described.

As shown in FIG. 1, the electrical component box 15 has a control board P on which all electrical control components S are mounted on the lower surface side, and a component box body 16 for supporting the control board P. ).

The component box body 16 covers an outer support surface made of a resin mold material for supporting the control plate P on its upper end portion, and an outer circumferential surface of the attachment support 17, and further together with the attachment support. The case body 18 which consists of a metal plate which accommodates the electrical control component S toward a direction, and this support body 17 and the cover body 19 which cover the upper surface part of the case body 18 are comprised.

Therefore, some electric control parts S are not exposed in the upper surface part of the control board P, and the angle part for attaching the electric control parts S which are soldered to the control board P is simply omitted (not shown in the drawings). Only).

As shown in FIG. 3, the control board P is provided with a G.TR, which is an electric control component S having a large amount of heat generation, and a rectifier in series with this G.TR.

In order to prevent heat generated from the electric control parts S such as the G.TR and the rectifier having a large heat generation amount from entering the inside of the box body 16 as much as possible, this is a state in which it protrudes to some extent from the side of the control board P. It is mounted as.

The heat-sensitive adhesive is applied to the outer surface side of the G.TR and the rectifier S, and the radiator 20 is in close contact. In addition, a plurality of mounting screws 21 are fitted to the radiator 20 and penetrated through the G.TR and the rectifier S to be attached to the support 22 of the radiator 20.

In this state, a gap is formed between the upper end of the radiator 20 and the edge of the side of the control plate P. In that state, dust and the like enter the main body 16 in the gap. Thus, a gap seal 23 made of a resin mold material is provided at the gap between the radiator 20 and the side of the control plate P to completely close the gap to reliably prevent dust or the like from entering.

The radiator 20 is an extruded product made of aluminum, and a plurality of cooling fins 20a are integrally installed. The cooling fins 20a are provided over the entire length in the width direction of the radiator 20, and the cooling fins are radially widened with each other.

As also shown in FIG. 2, the attachment support 17 is formed in a rectangular frame shape in plan view, and its inner dimension slightly exceeds the outer dimension of the control plate P. As shown in FIG. As for the both side surface parts 17a and 17b along a longitudinal direction, only one side end part is provided with the short missing part a. An inverted U-shaped missing portion b is provided on the other side from the lower edge to the vicinity of the upper end.

The substrate receiving piece 24 is provided in parallel with the upper edge at a portion slightly lowered from the upper edge at the inner surface side of the both side surface portions 17a and 17b. This board | substrate receiving piece 24 is cut | disconnected along the way suitably, and the hook part 25 is provided in the upper edge direction. The space | interval of this hook part 25 and the board | substrate receiving piece 24 is substantially equal to the plate | board thickness of the said control board P.

The side piece 17c is provided with the pressing piece 26 on the inner surface side along the upper edge.

The height of the pressing piece 26 coincides with the height of the hook portion 25. The up-down dimension of this side part 17c is smaller than the up-down dimension of the edge part of the said step-shaped missing part a.

Opposite side portions 17d have the same up and down dimensions as both side portions 17a and 17b, but leave only a few both side ends, and most are provided with one-shaped opening c.

The rectangular outlet port 27 is provided in the lower surface of this side part 17d. As shown only in FIG. 4, the opening part of the outlet opening 27 is directed inwardly, and an obstruction plate 28 is provided which draws out only the internal air and prevents the ingress of water and dust.

As shown in FIG. 2, the ladder part 29 is provided in the lower end of the side part 17d and the lower end of both side parts 17a and 17b, and it intersects in the substantially center part of the attachment support 17. As shown in FIG. Some ladder portions 29 are bent upwards and reinforce the respective side portions 17a, 17b, 17d. This ladder part 29 is called a rectifier in the form.

The support part 30 is provided in the substantially center part of the attachment support 17 which is the crossing position of the rectification part 29 upwards. The height of the upper edge of the support 30 corresponds to the height of the substrate receiving piece 24.

On the other hand, the case receiving piece 31 in parallel with the upper edge is provided in the portion of the outer surface side of the both side portions (17a, 17b) lowered from the upper edge by a predetermined interval. The case receiving piece 31 is appropriately cut off along the way, and the positioning end portion 32 extending from the orthogonal to the case receiving piece 31 and extending to the lower edge is provided successively on the side of the short cut-out part a.

In addition, a plurality of hook projections 33 are provided at both side portions 17a and 17b at predetermined intervals. Only one side portion 17b is provided with a concave portion (not shown) of a predetermined width from the outer surface side to the lower edge near the upper end portion.

Only the side part 17b and the side part 17c are provided with a pair of holding | maintenance part 34 and 35 in an upper end, respectively. The holding portions 34 and 35 protrude upward from the upper edge of the attachment support 17.

The control plate P is attached to and supported by the attachment retaining member 17. That is, the control board P on which all the electric control parts S are mounted has the electric control parts S facing downwards, so that the control board P is at the upper side, and the lower surface side which is the edge of both sides in the long direction. This side portion is placed on the substrate receiving piece 24. In this state, the upper three sides of the control board P are pressed by the hook portion 25 and the pressing piece 26.

At this time, the radiator 20 is installed in the G.TR and the rectifier S which are already mounted on one side of the control board P, which is fitted into the opening c of the side surface 17d of the attachment support. Both side ends of one side of the control plate P are engaged with the side portions 17d on both sides of the opening c, and positioning of the control board P is performed.

The support portion 30 supports the control plate P from below. Therefore, the bending deformation of the control board P by the many electrical control components S mounted can be suppressed, and an accident such as a disconnection can be prevented reliably.

The holding portions 34 and 35 collectively bundle lead wires (compressor lead, fan motor lead, sensor lead, case thermo lead, four-way valve lead, etc.) connected to the electrical control component S (not shown). Keep storage. Thus, the wiring process around the electrical component box 15 is obtained in a clean state.

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

The total length of both side portions 18b and 18c coincides with the length from the side portion 17d on which the outlet opening 27 of the attachment support 17 is installed to the positioning end 32 of both side portions 17a and 17b. .

The height may at least coincide with the height from the case receiving piece 31 of the both side surface portions 17a and 17b to this lower edge, and may have a margin slightly higher. The total length of both side portions 18d and 18e coincides with the total length of both side portions 17c and 17d of the attachment support 17. The height is mentioned later.

The two side portions 18b and 18c are provided with a pair of hook hangers 36 separated from each upper end, and a plurality of rectangular hook holes 37 are provided at predetermined intervals.

The extruded part 38 smoothly extruded is provided in one side part 18b. The lower end portion 18a side end portion of the extruded portion 38 is opened, and the upper end portion is closed in a bag shape. Therefore, the air can be freely flowed into the case body 18 from the lower end opening of the extrusion part 38.

In the extruded portion 38, slits 39 for internal air extraction are arranged in a row between the side ends of the side portions 18e. This internal air extraction slit 39 is opened toward the extruded portion 38. In other words, the extrusion part 38 is installed in the air outflow direction of the internal air discharge slit 39.

Only the opposing side part 18c is formed in the rectangular recessed part 40 concave. The width | variety of this recessed part 40 is equal to the width | variety of the recessed part not shown provided in the side part 17b of the said attachment base 17. As shown in FIG.

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

The SL connector mounting plate 42 is composed of a portion attached to the case body side portion 18d, a portion extending on the same plane as the case body lower surface portion 18a, and a portion extending in an inclined downward direction. The SL connector 43 is attached to the portion.

Opposite side portions 18e are bent inwardly at both ends, and the remaining portions are opened. The lower edge extends from the lower surface portion 18a and includes a hook portion 44 that is bent side by side at a narrow interval from the side portion 18e.

In the lower surface portion 18a, a rectangular projecting surface portion 45 is formed on the outer surface (lower surface) side. The protruding surface portion 45 is provided along the side surface portion 18c, and the cooling air introduction slits 46 are arranged in a line with the side surface portion 18d, which is a space approximately halfway in the longitudinal direction.

Cooling air introduction slits 47 having the same shape are arranged in a row in the lower surface portion 18a in parallel with the slits 46. Either slit 47 is in a position close to the SL connector mounting plate 42, and each of the openings faces the SL connector mounting plate.

In addition, a rectangular opening 48 is provided in the lower surface portion 18a along the side surface portion 18e. L-shaped pressing piece 49 is cut out on both sides of this opening portion 48 on the outer surface side.

The case body 18 formed in this way is attached as if it covers the outer surface side of the attachment support 17 as mentioned above.

That is, the plurality of hook hole portions 37 of the case body side surfaces 18b and 18c are fitted to the hook protrusion 33 provided at the position where the attachment support 17 faces. The recessed part 40 of the case side surface part 18c hangs in the recessed part which is not shown in the attachment support 17. FIG. In this state, the upper edges of the side portions 18b and 18c are caught by the attachment support case receiving portion 31, and the side edges are caught by the positioning portion 32.

Moreover, the case body side part 18e is caught by the side part 17d which the attachment support 17 opposes. The other side part 186 is caught by the attachment support missing portion a, and the lower surface portion 18a closes the lower surface opening except for the missing portion a.

Therefore, in particular, the case body 18 can be attached to the attachment support 17 without using an attachment mechanism such as a screw, and the case body 18 is accurate in both the longitudinal direction, the short direction, and the vertical direction. It is caught with the positioning performed.

At the same time, the case body hanger 44 is caught by the lower end of the radiator 20, and the end of the radiator 20 is fitted between the side face 18e. An attachment support outlet 27 is fitted into the opening 48 of the case lower surface 18a. The pressing piece 49 at both ends of the opening 48 is caught by the protruding lower surface of the outlet opening 27 and is positioned. The opening of the outlet opening 27 protrudes from the case lower surface portion 18a and opens toward the slits 46 and 47 and the SL connector mounting plate 42 that are inward.

Since the projecting surface part 45 is provided in the same lower surface part 18a, it is prevented from contacting the electric control component S mounted in the control board P and directed downward, and an appropriate space | interval is formed here, Cooling air is guided smoothly to improve cooling efficiency of electric control parts.

In particular, as shown in FIG. 4, one side end of the attachment support 17 protrudes outward from the side end of the case body 18 partially from the setting of the longitudinal length of the case body 18 and the attachment support 17. It protrudes.

And the opening part 50 is formed in the protrusion part from the dimension setting of the side part 17c, 18d of the up-down direction, and a part of control board P and a part of electric control part S are exposed.

The opening 50 extends from the power supply cord connected to the electrical control component S or the electrical control component S to the SL connector 43 and is connected to the lead wire.

Even if the case body 18 is attached to the attachment support 17 in this way, the upper surface part of the control board P is completely exposed. The cover body 19 shields the top exposed portion of the control plate P.

As shown in FIG. 1 and FIG. 4, the said cover body 19 is the upper surface part 19a which forms the rectangle corresponded to the upper surface opening part of the attachment support 17, and the side part formed by being folded in the periphery of this upper surface part, respectively. (19b to 19e) are provided.

Four circular protrusions 51 are provided on the upper surface portion 19a at the longitudinally symmetrical position. Both side portions 19b and 19c have the same bend width, and only one side portion 19c abuts against the attachment support holding portion 34 in a state in which the lid 19 is fitted to the case body 18. In order to avoid the discharge portion not shown is provided.

The side part 19d consists of a part bent at both ends, and a part bent slightly by the upper surface part 19a. The opposite side portions 19e are bent at the upper surface portion 19a, and the bending width is shorter than the bending widths of the both side portions 19b and 19c and larger than the bending widths of the opposing side portions 19e.

The insulating sheet 52 shown in FIG. 1 and FIG. 5 is engaged with the inner surface side of this cover body 19. As shown in FIG. The insulating sheet 52 has an upper surface portion 52a having the same shape area as the cover upper surface portion 19a, side surfaces 52b to 52d having the same bending width as the cover side surface portion 19d, and a cover side surface portion 19e. The side surface part 52e of the same shape as () is provided.

One side of the upper surface portion 52a is provided with a rectangular protrusion 53 protruding upward, and a circular protrusion 54 with three longitudinal and horizontal portions is provided in the remaining space. The protruding heights of the protrusions 53 and 54 are the same.

In addition, a sheet 55 for blocking tracking as shown in FIG. 5 is interposed between the insulating sheet 52 and the control board P, and the sheet is attached to the insulating sheet 52 side.

And each side part 52b-52e of the insulating sheet 52 is engaged with the inner surface side of each side part 19b-19e to which the cover body 19 corresponds. Four of the circular protrusions 54 are engaged with the circular protrusions 51 of the upper surface portion 19a of the cover body, thereby reliably positioning the insulating sheet 52.

The cover body 19 in which the insulating sheet 52 is engaged is attached to the attachment support 17 to which the control board P is attached, and the case body 18 to cover it. That is, the cover side part 52e is opposed to the side to which the said radiator 20 was attached, and is covered as it is.

Both sides of the cover body side surfaces 19b and 19c are fitted to the case receiving piece 31 of the attachment support side portions 17a and 17b and the outer surface of the case body side portions 18b and 18c, and the outer surface thereof is the case body hanger 36. By pressing elastically.

The inner surface of the lid side portion 19d is engaged with the outer surface of the attachment support side portion 17c and is sandwiched between the holding portions 35 provided therein. Opposite side portions 19e are engaged with the radiator 20 ends and slightly protrude from the case body side portions 18e. On the protruding side, however, the gap seal 23 fills the gap between the radiator 20 and the control plate P, so there is no slight gap to the inside.

Here, attachment and detachment of the cover body 19 is very easy. That is, when attaching the cover body 19, the side part 19e in which an opening part is installed is matched with the radiator 20 side, and mounting is completed by one touch. To remove the cover body 19, the cover body 19 protruding portion on the radiator 20 side is simply pushed up and detached.

In addition, each of the protrusions 53 and 54 provided on the insulating sheet 52 abuts the inner surface of the upper surface portion 19a of the lid, and in this state can withstand the pressure from the upper portion of the lid 19.

Such an electrical component box 15 is placed in the upper end of the partition plate 7 as described in FIG. In the room 8a where the radiator 20 protrudes, the blower 10 is disposed together with the heat exchanger 9, and blows toward the take-out grill 2 of the front panel 3 in accordance with the refrigeration cycle operation.

Therefore, this room 8a becomes negative pressure, cooling air is blown to the radiator 20, and sufficient heat radiation effect is acquired. In addition, since the cooling fins 20a protruding over the entire length in the width direction of the radiator 20 radially spread from each other, the amount of blowing air flowing between the fins increases, thereby providing more complete heat dissipation.

In the slit 39 of the case body side part 18b located in this room 8a, the air inside the component box main body 16 heated by the heat dissipated by the electrical control component S is derived, and the internal temperature rising is performed. Stop it.

Moreover, the extrusion part 38 protrudes and is installed in the opening direction of this slit 39, and this extrusion part 38 is the front panel 3 with the electrical parts box 15 arrange | positioned in the unit main body 1. As shown in FIG. In order to prevent the air from flowing into the openings of the slit 39, the communication between the rooms 8a and 8b at the side of the case body side portion 18b is prevented.

The temperature-heated air inside the component box main body 16 also flows out from the outlet port 27 which protrudes from the case body lower part 18a. Water droplets and dust can be prevented from entering by the baffle plate 28 provided in the outlet port 27 opening, which contributes to improved reliability because it is not attached to the internal electric control component S.

In addition, cooling air is introduced into the component box body 16 from the two rows of slits 46 and 47 provided on the lower surface portion 18a of the case body, thereby cooling the electrical control part S to prevent the temperature increase. .

These slits 46 and 47 are opened to face the SL connector mounting plate 42, and the SL connector mounting plate 42 is located on the introduction side of the so-called cooling air. In addition, the attachment plate 42 is bent in an obliquely downward direction, and the SL connector attachment plate has a function of cutting off water, which prevents water droplets from entering the component box body 16 through the slits 46 and 47.

In particular, the rectifying unit 29 combined with the reinforcement installed on the attachment support 17 rectifies the cooling air introduced into the box body 16 from the slits 46 and 47 to the electric control part S. Induction leads to more efficient cooling.

In this way, the electrical component box 15 is disposed over the two rooms 8a and 8b, and guides cooling air into the box from the slits 46 and 47 and the opening 50 at the room 8b side, and the rectifying section 29 And the air flows out from the outlet port 27 and the slit 39 on the side of the room 8a, so that the electrical control component S on the control plate P is formed under the air flow passage in the box. Along with the direction, the cooling air flowing in the box cools the electric control component S efficiently.

Since the sheet 55 made of a material resistant to tracking is placed on the control board P side of the insulating sheet 52 between the lid 19 and the control board P, for example, the insulating sheet 52 has a control board ( Even if it contacts P), it can withstand high voltage.

Further, the control board P in which the electric control component S is mounted may be accommodated in the insulating sheet 52, and the resin plate may be sealed as it is to be integrated with the control board P. In this state, since all the soldered parts to the control board P of the electric control component S are resin-sealed, it is a very strong structure against salt damage.

As described above, all electric control parts are mounted on the control board and housed in the parts box main body facing downward, thus simplifying the wiring process, improving workability and serviceability as the electric parts box, and all electric controls. Since the parts are directed downward in which the air flow passages in the box are formed, it is not necessary to set complicated air flow passages, and the cooling efficiency is improved even if the cooling openings are not drilled a lot.

Since the heat dissipation preventing structure is adopted in the shape of the radiator, the cooling efficiency can be improved, particularly for an electric control component having a large heat generation amount.

Since the parts box body has a double structure between the support body of the resin mold material and the case body of the metal plate, it secures the rigidity of the parts box body to ensure the protection of the electrical parts box or the control board housed therein, and also the noise. It has the effect of blocking.

The attachment support shows effects such as reliable maintenance of the control plate, reduction of stress, improvement of cooling efficiency for the electric control parts, and simplified wiring processing.

In addition to securing the rigidity of the main body of the parts, the case body efficiently cools the electrical control parts. It is effective in preventing dust from entering and improving reliability.

Since the lid is detachably attached to the upper surface of the controller board, the controller board is shielded with the lid and the controller board is protected.

An insulating sheet is provided between the cover body and the control board, and the configuration achieves thermal and electrical insulation to the control board, thereby achieving internal pressure, and the like.

Since the control board is sealed in the insulating sheet, the control board has an effect of increasing the reliability against salt damage.

Claims (20)

The interior is divided into partition plates, and the partitioned room includes an outdoor heat exchanger and a blower arranged opposite to the heat exchanger, and a unit body including a compressor in another room, disposed in the unit body, and the compressor and the blower An outdoor unit of an air conditioner having an electrical component box accommodating an electrical control component for driving control, wherein the electrical component box has a thin box shape having a small thickness and a large width in the horizontal and vertical directions, and one end side thereof. A control board which extends to the vicinity of the blower and is fixed to the upper part of the partition plate across both rooms in the unit body so that the other end side extends to the upper side of the compressor, and on which the electric control parts are mounted on the lower surface side; A component attached to and supported on a substrate, receiving all of the electrical control parts downward, and forming an air flow path. The outdoor unit of an air conditioner comprising the chair body. 2. The control board according to claim 1, wherein an electric control component having a large amount of heat is mounted on a side surface of one end extending to the vicinity of the blower, and a heat radiator is attached to the electric control component having a large amount of heat. The outdoor unit of the air conditioner, characterized in that the interval seal is installed in the interval formed between the side edge portions of the. The outdoor unit of an air conditioner of claim 2, wherein the radiator is provided with a plurality of cooling fins integrally, and the cooling fins are radially widened to each other. The case body according to claim 1, wherein the component box body comprises an attachment support made of a resin molding material for supporting the control plate, and a metal plate covering the outer circumferential surface of the attachment support and accommodating the electrical control parts together with the attachment support. An outdoor unit of an air conditioner, characterized by having a sieve. The outdoor unit of an air conditioner of claim 4, wherein the attachment support attaches and supports a peripheral edge of the control plate. The outdoor unit of an air conditioner according to claim 4, wherein the attachment support has a support for receiving the control plate from below. The outdoor unit of an air conditioner according to claim 4, wherein the attachment support is provided with a rectifying unit that serves both reinforcement and rectifies the air guided into the inside. The outdoor unit of an air conditioner according to claim 4, wherein a part of the attachment support protrudes from the case body on the other end side, and the protruding portion is a holding part for holding and holding a lead wire connected to the electric control component. . The outdoor unit of an air conditioner according to claim 4, wherein the case body has a slit for introducing cooling air into the electric control part at a lower surface thereof. The outdoor unit of an air conditioner according to claim 4, wherein the case body has a protruding surface portion for preventing abutment of the electrical control component on its lower surface portion. The outdoor unit of an air conditioner of claim 10, wherein the protruding surface of the lower surface of the case body includes a slit for introducing cooling air. The said case body is a SL connector attachment plate provided in the lower surface part of the said other end side, and this SL connector attachment plate is located in the cooling air introduction direction side of the said slit provided in a case body lower surface part. Outdoor unit of the air conditioner, characterized in that set. 5. The casing according to claim 4, wherein the casing body has an outlet provided in the lower end portion of the one end side with the attachment support and protruding from the casing lower surface portion, and having an outlet port for inducing internal air from the projecting portion. An outdoor unit of an air conditioner, characterized in that. The outdoor unit of an air conditioner according to claim 4, wherein the case body has a slit for deriving internal air on a circumferential surface of the one end side. The outdoor unit of an air conditioner according to claim 14, wherein the case body has an extruded portion forward in an air outlet direction of the slit for deriving the internal air. The outdoor unit of an air conditioner according to claim 1, wherein the parts box main body includes a cover body detachably attached to an upper surface of the control board. The outdoor unit of an air conditioner according to claim 16, wherein the cover has an insulating sheet between the control plates. 18. The outdoor unit of an air conditioner according to claim 17, wherein the insulation sheet and the upper surface side thereof have projections for withstanding the pressure applied therefrom. The outdoor unit of an air conditioner according to claim 17, wherein a tracking blocking sheet is sandwiched between the insulating sheet and the control plate. 18. The outdoor unit of an air conditioner according to claim 17, wherein the insulating sheet accommodates a control plate on which the electric control component is mounted, and is resin-sealed and integrated with the control plate.