JP2550722B2 - Air conditioner outdoor unit - Google Patents

Description

Description: [Industrial field of use] The present invention relates to an improvement of a cooling means for an electric component provided in an outdoor unit of an air conditioner.

[Prior Art] FIG. 4 is a perspective view showing an electric component box housed in an outdoor unit in a conventional air conditioner, in which (1) is the electric component box and (2) is the inside thereof. The generated reactor has a particularly large amount of heat generation and its surface temperature reaches about 100 ° C. (3) is a U-shaped duct covering this reactor,
(4) is the U-shaped duct (3) and the electrical box (1)
Is communicated with the outside of the outdoor unit through a vent for cooling air flow formed between the bottom plate (5) and the bottom plate (5). (6) is a suction port for sucking outside air into the electrical component box (1), (7) is an exhaust port from the electrical component box (1) and the duct (3) provided on the opposite side, Reference numeral (8) is a money receiver provided on the top surface of the duct (3) to receive the internal electric component (9), and (10) connects the duct (3) and the bottom plate (5) of the electric component box (1). It is a mounting screw. In the above structure, when the blower rotates, the outside air enters through the suction ports (4) and (6) and is discharged to the outside through the exhaust port (7) while cooling the reactor (2) in the duct (3). . On the other hand, electrical box (1)
The outside air entering through the suction port (6) of the
While being cooled, it is discharged to the outside through the exhaust port (7).

[Problems to be Solved by the Invention] Since the electrical component box housed in the outdoor unit of the conventional air conditioner is configured as described above, the reactor base plate and the bottom plate (5) of the electrical component box are superposed. Since the area is large, chattering noise due to magnetism is easily generated, and the suction port (4) of the U-shaped duct (3) that covers the reactor (2) is directly opened to the outside of the outdoor unit, so rainwater can enter. However, there is a problem that rainwater similarly enters the electric equipment box (1) to cause an electric leakage accident.

The present invention has been made to solve the above problems, and an object thereof is to reduce chatter noise due to the magnetism of the reactor as much as possible and to prevent rainwater from entering the reactor housing and the electrical equipment box. To do.

[Means for Solving the Problem] An outdoor unit for an air conditioner according to the present invention is provided with a collision plate (18) for separating incoming rainwater on the intake side of an electric component box (16). ) Is provided with an outer casing (20) for accommodating a reactor, which is a different air passage that is separated from the air passage through which the main cooling air flow that is sucked into and cools the electrical components and is discharged is provided. ) Place the four corners of the base plate on the open top wall of the outer housing (20) for accommodating the reactor, and place the reactor (21) in an inverted state in the outer housing (20) for accommodating the reactor with mounting screws. It is configured to be fixed and to be cooled by a cooling flow separated from the main cooling air flow.

[Operation] In the case of the present invention, the outside air for cooling that has flowed into the electrical equipment box (16) and the external casing (20) for branching from the electrical equipment box has its rainwater contained therein separated in advance, The support of the reactor (21) to the outer casing (20) is
Since chattering is performed only at the four corners of the base plate and the overlapping area is small, chatter noise due to magnetism is reduced. Furthermore, since the reactor in the reactor housing (20) is in an inverted state, the cooling air flow directly hits the winding part of the reactor, which not only improves the cooling efficiency but also improves the four corners of the base plate of the reactor (21). Since it is once placed on the open top wall of the reactor housing outer casing (20), it is easy to assemble with the mounting screws.

[Example] An example of the present invention will be described below. That is, in FIG. 1, FIG. 2 and FIG.
An outer casing of an outdoor unit provided with an electric component box (16) containing a compressor (12), a blower (13) and an inverter circuit,
In FIG. 3, (14) is an inlet for cooling air flow formed on one side of the outer casing, and (15) is provided inside the outer casing (11) so as to face the inlet (14). This is a duct that separates the rainwater in the intake outside air. The upper part is the bottom plate (16)
It is sealed in a). (17) is a communication hole for communicating the inside of this duct (15) with the electrical box (16) above it.
Reference numeral (18) is a collision plate for separating the rainwater contained in the cooling air flow provided so as to collide with the cooling air flow sucked from the communication hole (17), and has a horizontally long slot (18a) in the lower part. )have. (19) is an electrical component mounting plate provided in the electrical component box (16) so as to be located on the downstream side of the collision plate (18), and (20) is a cooling air flow of the electrical component mounting plate (19). The diverted air flow from the electrical box (1
6) An outer casing for accommodating a reactor separately provided in the inside, (20a) is the front punching metal plate, (20b) is the above outer casing (20)
Of the electric component mounting plate (19), and the opening on the opposite side is closed by the outer casing (11) of the outdoor unit. Further, (20c) in FIG. 2 is an outer housing (20) for storing the reactor.
A cross hole is formed on the top wall of the reactor, (21) is a reactor inserted from this cross hole in the outer casing (20) in an inverted state (21a).
Is a base plate, (21b) is a winding portion, (22) is a mounting screw for fixing the four corners of the base plate (21a) to the top wall of the outer casing (20) in a superposed state. As a result, the reactor (21) is suspended and supported in the outer casing (20) in an inverted state. (23) is provided on the rear wall of the electric component box (16) in a superposed state, and the inside of the electric component box (16) and the outer casing (2).
0) A cooling air flow focusing duct that communicates with the exhaust port (24) from the inside of the outdoor unit (1).
1) Suction hole (23a) sucked by blower (13)
Has been established.

In the above structure, the negative pressure generated by the rotation of the blower (13) causes outside air to enter the electric component box (16) from the suction port (14) provided in the outer casing (11) of the outdoor unit through the duct (15), Cool the internal electrical components (9) through the oblong hole (18a) of the collision plate, part of which enters the reactor housing (20) and cools the reactor (21) supported in an inverted state. It is then discharged from the exhaust port (24). The other cooling air flow passes around the outer casing (20) and is discharged from the exhaust port (24).

By the way, most of the rainwater contained in the cooling air flow is separated when it collides with the front wall of the duct (15), and the rest is blocked by the collision plate (18) and the electric component box ( 16) Rainwater does not enter the inside.

The winding part (21b) of the reactor (21) is inserted into the cross hole (20c) formed in the top wall of the outer casing (20), and the reactor (21) is upside down at the four corners of the base plate (21a). Since the winding part (21b) is supported by the base plate (21b), the cooling effect of the winding part (21b) is great, and the contact surface between the base plate (21a) and the outer casing (20) is the base plate (21b).
The chattering noise due to magnetism is reduced because it is limited to the four corners of a).

[Advantages of the Invention] The outdoor unit of the air conditioner of the present invention is configured as described above, and has a large amount of heat generation in the electrical component box (21).
Is installed separately from other electric parts, and the cooling air passage is divided into the reactor (21) side and the other electric part side, so that the hot air after cooling does not adversely affect each other. Further, since the collision water is used to separate the rainwater and suck it into the electrical component box, the cooling air flow is separated, so that only one suction port for the cooling air is required and the rainwater can be prevented from entering. Done. Further, since the reactor (21) in the reactor housing (20) is in an inverted state, the cooling air flow directly hits the winding portion of the reactor (21) so that the cooling efficiency is good and the reactor (21) is in the inverted state. Since the four corners of the base plate are once placed on the open top wall of the reactor housing (20), the workability of assembling with the mounting screws is good, and the chatter noise due to magnetism is reduced.

[Brief description of drawings]

1 and 2 are perspective views showing a main part of an outdoor unit according to the present invention, FIG. 3 is a sectional view of the main part, and FIG. 4 is a perspective view showing an electric component box housed in a conventional outdoor unit. It is a figure. In the figure, (11) is the outer casing of the outdoor unit, (12) is a compressor, (13) is a blower, (15) is a duct, (16) is an electrical component box, (18) is a collision plate, and (19) is. Is an electrical equipment mounting plate, (20)
Is an outer casing, (21) is a reactor, (21a) is a base plate, (21b)
Is a winding part, and (22) is a mounting screw.

Claims (1)

(57) [Claims] 1. An outdoor unit in which a built-in electric component box (16) such as a compressor, a blower, a condenser and an inverter circuit is housed inside to separate incoming rainwater into the intake side of the electric component box (16). Equipped with a collision plate (18), the electrical box (16)
A reactor housing outer casing (20), which is a different air passage that is separated from the air passage through which the main cooling air flow that is sucked inside and cools the electrical components and is discharged, is provided, and the reactor (2
The four corners of the base plate of 1) are placed on the open top wall of the reactor housing outer casing (20), and the reactor (21) is inverted in the reactor housing outer casing (20) with mounting screws. And the coil portion (21b) of the reactor supported in a suspended state inside the reactor housing (20) is cooled and exhausted by a cooling flow diverted from the main cooling air flow. The outdoor unit of the air conditioner.