JP7352858B2 - Outdoor unit of air conditioner - Google Patents

Description

The present invention relates to an outdoor unit of an air conditioner.

An outdoor unit of an air conditioner includes a heat exchanger having a plurality of fins arranged at predetermined intervals and a plurality of heat transfer tubes through which a refrigerant passes through the fins (for example, Patent Document 1 ).

The interior of the outdoor unit casing is divided by a partition plate into a heat exchange room where the heat exchanger and fan described above are located, and a machine room where the compressor, expansion valve, electrical equipment box, etc. are located. . The heat exchanger is assembled to the bottom plate of the outdoor unit housing. The heat exchanger needs to be connected to the compressor and expansion valve arranged in the machine room through refrigerant piping, and a part of the heat exchanger is arranged in the machine room for this connection. That is, since the heat exchanger is arranged across the machine room and the heat exchange room, there is no partition plate where the heat exchanger is arranged. Furthermore, the bottom plate is provided with a drainage groove that drains water such as condensed water generated by the heat exchanger and rainwater that has entered the outdoor unit to the outside of the outdoor unit. The drain groove is formed as a recess in the bottom plate along the shape of the heat exchanger.

Japanese Patent Application Publication No. 2010-210140

As described above, there is no partition plate in the area where the heat exchanger is arranged, and a drainage groove is formed below the heat exchanger from the machine room to the heat exchange room. Since the drain groove is formed as a recess in the bottom plate, the lower surface of the heat exchanger and the drain groove do not come into close contact when the heat exchanger is assembled to the bottom plate. Therefore, a gap is formed between the lower part of the heat exchanger and the drain groove, which communicates the machine room and the heat exchange room. If the size of this gap is large, it may cause problems such as the inlet for taking in outside air into the heat exchange chamber of the outdoor unit, or the outlet for releasing outside air that has undergone heat exchange with the refrigerant in the heat exchanger from the heat exchange chamber to the outside. There is a risk that small animals that have entered the heat exchange room may enter the machine room through the above-mentioned gap. If a small animal that has entered the machine room enters the electrical equipment box, it may cause problems such as short-circuiting of circuit boards stored in the electrical equipment box.

The present invention solves the problems described above, and aims to provide an outdoor unit of an air conditioner that can prevent small animals from entering the machine room from the heat exchange room.

In order to solve the above problems, an outdoor unit of an air conditioner according to the present invention includes a casing whose interior is divided into a first chamber and a second chamber by a partition plate, and a casing from which the first chamber is connected to the inside of the casing. and a heat exchanger disposed across the second chamber. This outdoor unit has a drain groove formed in a concave shape extending from the first chamber to the second chamber, which forms part of the housing and is located below the heat exchanger and at a position corresponding to the shape of the heat exchanger 10. The heat exchanger has a bottom plate provided with the heat exchanger, and a gap member provided with the protrusion and assembled to the heat exchanger. Then, when the heat exchanger with the gap member assembled is placed on the bottom plate, the protruding portion is placed in the drain groove, and the protruding portion forms an interface between the first chamber and the second chamber in the drain groove.

According to the outdoor unit of the air conditioner of the present application, since the first chamber and the second chamber are cut off by the protrusion, small animals cannot enter the first chamber (mechanical room) from the second chamber (heat exchange room). can be prevented.

FIG. 2 is an explanatory diagram of an outdoor unit of an air conditioner according to an embodiment of the present invention, (A) is an external perspective view of the outdoor unit, and (B) is a view of the inside of the outdoor unit from above with the top panel removed. This is a diagram. 2 is a diagram illustrating a state in which a gap member is installed in an embodiment of the present invention, (A) is an internal perspective view of an outdoor unit showing only the configuration related to the present invention, and (B) is a B in (A). It is an enlarged view of the part. It is a figure which looked at the heat exchanger from the side plate side before mounting|wearing the gap member. FIG. 3 is a perspective view of a gap member in an embodiment of the present invention. 2 is a diagram illustrating a method of installing a gap member in an embodiment of the present invention, (A) is a diagram illustrating a procedure for attaching a gap member to the lower surface of a heat exchanger, and (B) is a diagram illustrating a procedure for installing a gap member on the lower surface of a heat exchanger, and (B) is a diagram illustrating a procedure for attaching a gap member to the lower surface of a heat exchanger; It is a drawing which shows the state where attachment of the gap member to the lower surface of an exchanger is completed. It is a figure which looked at the heat exchanger from the side plate side after mounting|wearing the gap member. FIG. 3 is a perspective view showing a state in which the abutting portion of the gap member abuts against the side plate of the heat exchanger. It is a perspective view of the gap member which provided the penetration part in the protrusion part in other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. In the following explanation, the horizontal direction of the outdoor unit will be referred to as the X direction shown in FIG. 1(A), the front-rear direction of the outdoor unit will be referred to as the Y direction, and the vertical direction of the outdoor unit will be referred to as the Z direction shown in FIG. 1(A). do. Further, the present invention is not limited to the following embodiments, and various modifications can be made without departing from the spirit of the present invention.

First, the outdoor unit 1 will be explained. As shown in FIG. 1(B), the outdoor unit 1 of the air conditioner according to this embodiment includes at least a heat exchanger 10 and a fan 41 inside a casing of the outdoor unit 1, which will be described later. Although not shown, the outdoor unit 1 is equipped with an electrical component box that stores the compressor, four-way valve, expansion valve, and circuit boards such as the power supply board and control board, which together with the heat exchanger 10 form the refrigerant circuit of the outdoor unit 1. It is provided inside the casing.

As shown in FIGS. 1(A) and 1(B), the casing of the outdoor unit 1 includes a front panel 2, a top panel 3, a front column 23, a rear column 24, and a side panel 4. , the bottom plate 8 and the partition plate 25 are formed into a rectangular parallelepiped shape.

The front panel 2 is formed of a sheet metal, and as shown in FIG. 1(A), is arranged so as to cover a portion of the right side of the front surface of the outdoor unit 2 (the front surface of a machine room 31 to be described later). The front support column 23 is formed by bending a sheet metal into an L-shape, and is arranged at the left end of the front surface of the outdoor unit 1, as shown in FIG. 1(B). Between the left end of the front panel 2 and the front support column 23, two air outlets 21 are vertically arranged to communicate the inside and outside of the outdoor unit 1, and the fans 41 are also arranged vertically so as to face the air outlets 21. There are two located in.

The rear support column 24 is formed by bending a sheet metal into an L-shape, and is arranged at the left end of the rear surface of the outdoor unit 1. The back panel 5 is formed of a sheet metal, and is arranged to cover a part of the right side of the back of the outdoor unit 1 (the back of the machine room 31, which will be described later). And, between the front side column 23 and the rear side column 24, and between the rear side column 24 and the left end of the rear panel 5, each serves as a suction port 21 that communicates the inside and outside of the outdoor unit 1, As shown in FIGS. 1(B) and 2(A), an L-shaped heat exchanger 10 is arranged so as to face the suction port 22. As shown in FIG. Note that in FIG. 2, the drawing of the fan 41 is omitted.

The side panel 4 is formed of a sheet metal, and is arranged to cover the right side of the outdoor unit 1 (the right side of the machine room 31, which will be described later). The partition plate 25 is arranged to partition the inside of the casing of the outdoor unit 1 into a machine room 31 (corresponding to the first chamber of the present invention) and a heat exchange chamber 32 (corresponding to the second chamber of the present invention). It is formed by bending a sheet metal into a substantially C-shape.

The bottom plate 8 is formed by bending the peripheral edge of a sheet metal upward. Each of the panels described above, the front support 23, the back support 24, the partition plate 25, the heat exchanger 10, a compressor forming a refrigerant circuit, and the like are fixed to the bottom plate 8. In addition, as shown in FIGS. 2(B) and 3, the bottom plate 8 has a drainage groove for discharging water such as condensed water generated in the heat exchanger 10 and rainwater that has entered from the outside to the outside of the outdoor unit 1. 8a is provided. The drainage groove 8a is formed so that the bottom plate 8 has a concave shape and extends from the machine room 31 to the heat exchange room 32 along the lower surface 10a of the heat exchanger 10. A drain hole (not shown) is provided in the drain groove 8a, and the drain groove 8a is formed so as to be inclined toward the drain hole. Therefore, condensed water that is generated when the heat exchanger 10 functions as an evaporator and drips into the drain groove 8a flows to the drain hole and is drained to the outside of the outdoor unit 1 from the drain hole.

Inside the casing of the outdoor unit 1 described above, as described above, the heat exchanger 10, the fan 41, a compressor (not shown), a four-way valve, an expansion valve, and an electrical component box are arranged. Specifically, the machine room 31 includes a compressor, a four-way valve, an expansion valve, and an electrical equipment box. The electrical component box is disposed above the machine room 31 with a portion thereof fixed to the upper end of the partition plate 25 shown in FIG. 2(A). Therefore, the space above the partition plate 25 inside the outdoor unit 1 is partitioned into a machine room 31 and a heat exchange room 32 by the electrical equipment box. On the other hand, the heat exchanger 10 and the fan 41 are arranged in the heat exchange chamber 32. The fan 41 is arranged so as to face the air outlet 21. The heat exchanger 10 is formed into a substantially L-shape and is arranged so as to face each suction port 22 provided on the back and left side.

As described above, most of the heat exchanger 10 fixed to the bottom plate 8 is disposed in the heat exchange chamber 32, and a portion thereof is disposed in the machine room 31. Specifically, as shown in FIG. 1(B), the end of the heat exchanger 10 (hereinafter referred to as a heat The exchanger end 11a) passes through the end of the partition plate 25 on the heat exchanger 10 side (hereinafter referred to as the partition plate end 25a) and crosses the straight line A parallel to the side panel 4 into the machine room. It is located at 31. Here, the straight line A is an imaginary straight line for separating the machine room 31 and the heat exchange room 32 at a location where the partition plate 25 is not present. That is, as shown in FIG. 3, the partition plate 25 is not present in the drainage groove 8a below the lower surface 10a of the heat exchanger 10 below the location on the straight line A where the heat exchanger end 11a is arranged. Thus, a communication port S is formed through which the machine room 31 and the heat exchange room 32 communicate with each other via the drain groove 8a.

As shown in FIG. 1(B) and FIG. 2, the heat exchanger 10 includes a plurality of fins 11 arranged at predetermined intervals, and a plurality of heat transfer tubes 7 through which a refrigerant flows through the plurality of fins 11. As described above, it is formed into a substantially L-shape. As shown in FIG. 2(B) and FIG. 3, the heat exchanger 10 is arranged such that the bottom plate 8 or the front support column is arranged such that the lower surface 10a of the heat exchanger 10 is disposed above the drain groove 8a. 23 with a plurality of fixing fittings (not shown). The heat exchanger 10 exchanges heat between the air passing between the plurality of fins 11 in the air flow direction α shown in FIG. 2(A) and the refrigerant flowing through the plurality of heat transfer tubes 7.

The fin 11 is formed into a plate shape using aluminum or an aluminum alloy. A plurality of fins 11 are stacked at predetermined intervals, and air flows between them. As the fan 41 rotates, the air sucked in from each suction port 22 and flowing into the heat exchange chamber 32 flows through the heat exchanger 10 in the direction of arrow α shown in FIG. 2(A). Further, as shown in FIG. 2, a side plate 6 is attached to the heat exchanger end 11a on the outside of the fins 11 arranged at the heat exchanger end 11a. The side plate 6 is formed by processing a sheet metal so that the height dimension is almost the same as that of the fin 11, and the front-rear dimension (Y direction in FIG. 1(A)) is slightly larger than the fin 11.

The plurality of heat exchanger tubes 7 are copper pipes formed into a hairpin shape. The plurality of heat exchanger tubes 7 are arranged in parallel in the vertical direction in a direction perpendicular to the air flow direction α. As shown in FIGS. 1(B) and 2(A), at the heat exchanger end 11a, some of the heat exchanger tubes 7 are connected to a flow divider (not shown), and other heat exchanger tubes 7 are connected to a flow divider (not shown). In this case, one end of the heat exchanger tube 7 and the end of the other heat exchanger tube 7 are connected by a connecting tube 7a to form one pipe line. In addition, in the heat exchanger 10 of this embodiment, the heat exchanger tubes 7 are arranged in multiple rows in the air flow direction α, but the heat exchanger tubes 7 may be arranged in multiple rows in the air flow direction α. Therefore, the number of rows of heat exchanger tubes 7 may be increased or decreased as appropriate.

The assembly of the heat exchanger 10 described above is performed in the following steps. First, a plurality of heat exchanger tubes 7 are inserted through a plurality of fins 11 and a side plate 6. Specifically, each heat exchanger tube 7 is inserted into a hole provided in a plurality of fins 11, and finally each heat exchanger tube 7 is inserted into a hole provided in a side plate 6. Next, each heat exchanger tube 7 is expanded and each heat exchanger tube 7, each fin 11, and each side plate 6 are fixed. Next, one end of one heat exchanger tube 7 and one end of the connecting tube 7a are welded and connected, and the other end of the connecting tube 7a and one end of the other heat exchanger tube 7 are welded. and connect. At this time, the side plate 6 is placed inside (on the left side) from the welding point between the end of the heat exchanger tube 7 and the connecting tube 7a, that is, the fin is placed on the outermost side (on the right side) of the heat exchanger end 11a. A side plate 6 is interposed between 11 and the welding location. As a result, when welding the heat exchanger tube 7 and the connecting tube 7a, the amount of heat transmitted to the fins 11 arranged inside the side plate 6 is reduced, so that the amount of heat generated when welding the heat exchanger tube 7 and the connecting tube 7a is reduced. It is possible to prevent the fins 11 from deforming due to heat.

By the way, as shown in FIG. 3, when the heat exchanger 10 is assembled to the bottom plate 8, a concave drain groove 8a is located below the heat exchanger 10. If the distance between the heat exchanger 10 and the drain 8a is short, when the water present in the drain 8a freezes in winter, the lower part of the heat exchanger 10 will be covered with ice, reducing the area that serves as the heat exchanger 10. There is a risk that the amount of heat exchanged will decrease. Therefore, the heat exchanger 10 is assembled to the bottom plate 8 apart from the drain groove 8a.

As described above, the interior of the outdoor unit 1 is divided by the partition plate 25 into a machine room 31 and a heat exchange room 32. On the other hand, the above-described communication port S is formed by assembling the heat exchanger 10 on the bottom plate 8 apart from the drain groove 8a. If the height and width of the communication port S are large and are larger than the dimensions (for example, 9.0 mm) that allow small animals such as insects to enter, the air intake port 22 or the Small animals such as insects that have entered the heat exchange chamber 32 through the outlet 21 have entered the machine room 31 through the communication port S, and have been disposed of in an electrical equipment box (not necessarily a closed box) located in the machine room 31. It is not necessary, and a part of it may be open to the machine room 31), and there is a risk of short-circuiting the circuit board such as the power supply board.

In order to solve the problems described above, the outdoor unit 1 of the air conditioner according to the present embodiment has a gap member 9 attached to the lower surface 10a of the heat exchanger 10, and a protrusion 9d provided on the gap member 9. Place it in the communication port S. As a result, the protruding portion 9d in the drain groove 8a forms an interface between the heat exchange chamber 32 and the machine room 31, and reduces the area of the communication port S, thereby preventing small animals from entering the machine room 31 from the heat exchange chamber 32. can be prevented. Hereinafter, details of the gap member 9 will be explained mainly using FIG. 4.

As shown in FIG. 4, the gap member 9 is formed using a sheet metal to have a substantially rectangular shape, and includes a base 9a in contact with the lower surface 10a of the heat exchanger 10, and a base 9a extending upward from one side of the base 9a. A first curved portion 9b that is formed to extend continuously, and a second curved portion that is formed to continuously extend upward from the base portion 9a from one side opposite to the side where the first curved portion 9b of the base portion 9a is continuous. It has a portion 9c. The first return portion 9b is formed to be disposed on the upstream side in the air flow direction α when the gap member 9 is attached to the heat exchanger 10, and the second return portion 9c is formed to connect the gap member 9 to the heat exchanger 10. It is formed so that it is located on the downstream side in the air flow direction α when it is attached to the air flow direction α.

Also, it extends continuously from the base 9a downward from one side located on the heat exchanger end 11a side, which is different from the side where each of the first turned part 9b and the second turned part 9c are continuous. A protrusion 9d is provided. When the gap member 9 is attached to the lower surface 10a of the heat exchanger 10, the protruding portion 9d is arranged between the heat exchanger 10 and the drain groove 8a to reduce the area of the communication port S and reduce the area of the heat exchanger 10. 32 into the machine room 31 so that small animals cannot enter. In addition, when the gap member 9 is assembled to the heat exchanger 10 by the method described later, the end facing the side plate 6 among the ends of the first turned part 9b is defined as the first turned part end 9b1, and the second turned part Among the ends of the portion 9c, the end facing the side plate 6 is referred to as a second turned end portion 9c1.

The above-described gap member 9 is obtained by cutting a sheet metal using a laser cutter or the like, cutting out the outer shape of the gap member 9 including the first turned portion 9b, etc. , and the protrusion 9d are each formed by bending and raising from the base 9a. At this time, the distance D between the first turned part 9b and the second turned part 9c shown in FIG. 4 is set to be slightly smaller than the thickness H of the heat exchanger 10 shown in FIG. 5.

Next, a method for assembling the gap member 9 to the heat exchanger 10 will be explained using FIG. In addition, in FIG. 5, drawing of the connecting pipe 7a is omitted, and in order to make it easier to understand the state in which the gap member 9 is attached to the heat exchanger 10, the drawing of the side plate 6 is also omitted.

First, as shown in FIG. 5A, the gap member 9 is brought close to the lower surface 10a of the heat exchanger 10 from below, that is, from the direction of the arrow β shown in FIG. The gap member 9 is assembled to the heat exchanger 10 so that the heat exchanger 10 is disposed between the heat exchanger 10 and the second return portion 9c. As mentioned above, since the distance D between the first returned portion 9b and the second returned portion 9c is a dimension slightly smaller than the thickness H of the heat exchanger 10, when the gap member 9 is assembled to the heat exchanger 10, , the first turned portion 9b and the second turned portion 9c are each elastically deformed outward. As a result, the first return portion 9b and the second return portion 9c of the gap member 9 sandwich both end surfaces of the plurality of fins 11, and the assembly of the gap member 9 to the heat exchanger 10 is completed.

Note that the method of assembling the gap member 9 is not limited to this. For example, the distance D between the first turned part 9b and the second turned part 9c is set to be a little larger than the thickness H of the heat exchanger 10, and the first turned part 9b and the second turned part 9c are connected to the end surfaces of the fins 11. The gap member 9 may be assembled to the heat exchanger 10 by interposing an elastically deformable material such as a cushioning material in the gap created between the two.

When the heat exchanger 10 to which the gap member 9 described above is assembled is assembled to the bottom plate 8, the protrusion 9d is arranged at the communication port S of the drain groove 8a, as shown in FIG. More specifically, the protruding portion 9d is arranged below the straight line A shown in FIG. 1(B) in the drain groove 8a. As a result, the area of the communication port S between the machine room 31 and the heat exchange chamber 32 in the drain groove 8a, excluding the gap between the lower end of the protrusion 9d and the drain groove 8a (hereinafter referred to as gap L), is is made smaller by the protrusion 9d. Note that in FIG. 6 as well, the drawing of the connecting pipe 7a is omitted as in FIG. 5.

The protruding portion 9d is formed such that the height of the gap L is a first predetermined dimension (for example, 2.5 mm). Here, the first predetermined dimension is such that a small animal of a size that may enter the electrical equipment box and cause a problem such as shorting out circuit components is allowed to pass from the heat exchange room 32 to the machine room 31 through the gap L. and water that is generated in the machine room 31 or enters the machine room 31 from the outside and drips into the drain groove 8a located in the machine room 31 is allowed to flow into the heat exchange room 32 through the gap L. This is a distance that allows for Furthermore, by providing this gap L, even if the protruding portion 9d and the drain groove 8a move toward each other due to vibrations occurring during transportation of the outdoor unit 1 or falling of the outdoor unit 1, contact between the two can be prevented. , it is possible to prevent the protrusion 9d from being deformed due to contact with the drain groove 8a.

As explained above, the outdoor unit 1 of the air conditioner according to the present embodiment has a space between the heat exchanger 10 10a and the drain groove 8a by attaching the gap member 9 to the lower surface 10a of the heat exchanger 10. The protruding portion 9d of the gap member 9 is arranged in the communication opening S that is created. Thereby, small animals such as insects that have entered the heat exchange chamber 32 can be prevented from entering the machine room 31 through the communication port S. A small animal that has entered the machine room 31 can be prevented from entering the electrical equipment box and causing a short circuit to the circuit board. Furthermore, by providing a gap L that is spaced apart by a first predetermined dimension between the lower end of the protrusion 9d of the gap member 9 and the drain groove 8a, water that has entered the machine room 31 or water generated in the machine room 31 can be prevented. , water can be drained to the heat exchange chamber 32 without any problem through the gap L. Further, it is possible to prevent the protrusion 9d of the gap member 9 from coming into contact with the drainage groove 8a of the bottom plate 8 and deformation of the protrusion 9d due to vibration or dropping during transportation of the outdoor unit 1.

Note that the gap member 9 may be provided with an abutting portion 9b2 for positioning the gap member 9, as shown in FIGS. 4 and 5(A). As described above, the protruding portion 9d of the gap member 9 is disposed below the communication port S formed in the drain groove 8a where the partition plate 25 is not present, that is, below the straight line A shown in FIG. 1(B). For example, the protrusion 9d can prevent small animals such as insects from entering the machine room 31 from the heat exchange chamber 32. On the other hand, if the protrusion 9d is located away from the straight line A, that is, if the protrusion 9d is disposed not on the straight line A but at a different location in the drain 8a, the protrusion 9d It is not possible to prevent small animals such as insects from entering the machine room 31 from the machine room 32.

Therefore, as shown in FIG. 7, an abutment part 9b2 is provided in a part of the upper part of the first turned part end 9b1 so as to project outward from the first turned part end 9b1, and the heat exchanger 10 When the gap member 9 is installed, the abutting portion 9b2 is abutted against the side plate 6 so that the protruding portion 9d of the gap member 9 is placed below the communication port S, that is, the straight line A shown in FIG. 1(B). Then, position the gap member 9. At this time, the shape of the abutting portion 9b2 is such that when the heat exchanger 10 is assembled to the bottom plate 8, the protruding portion 9d of the gap member 9 is arranged below the straight line A shown in FIG. 1(B). Any shape may be used as long as the gap member 9 can be positioned. In this way, by providing the abutment part 9b2 on the gap member 9, the positioning of the protruding part 9d can be easily performed, and the protruding part 9d can reliably reduce the area of the communication port S, thereby allowing the connection from the heat exchange chamber 32 to the machine room. It is possible to prevent small animals from entering 31.

Next, a second embodiment of the present invention will be described. In this embodiment, a part of the structure of the gap member 91 is different from the gap member 9 of the first embodiment, as described later. Note that the configuration other than the above is the same as that of the first embodiment, so detailed explanation will be omitted.

As shown in FIG. 8, the gap member 91 of this embodiment has a plurality of (six in FIG. 8) through-holes 91a in the protrusion 9d. This penetrating portion 91a is a round hole, and its diameter is equal to or smaller than the first predetermined dimension described in the first embodiment. By providing the penetrating portion 91a in the protruding portion 9d, water that has entered the machine room 31 or that has been generated in the machine room 31 and has flowed down to the drain groove 8a is more likely to flow into the heat exchange room 32 than in the first embodiment. It can flow smoothly. Note that the penetrating portion 91a may not be a round hole but a slit whose width is equal to or less than the first predetermined dimension.

1 Outdoor unit 2 Front panel 3 Top panel 4 Side panel 5 Back panel 6 Side plate 7 Heat exchanger tube 7a Connection pipe 8 Bottom plate 8a Drain groove 9 Gap member 9a Base 9b First turned part 9b1 First turned part end 9b2 Abutting part 9c 2nd return part 9c1 2nd return part end 9d Projection part 10 Heat exchanger 10a Lower surface of heat exchanger 11 Fin 11a Heat exchanger end 21 Air outlet 22 Suction port 23 Front side support 24 Back side support 25 Partition plate 25a Partition plate end 31 Machine room 32 Heat exchange room 41 Fan 91 Gap member 91a Penetration part S Communication port L Gap

Claims (3)

a housing whose interior is divided into a first chamber and a second chamber by a partition plate;
a heat exchanger disposed inside the casing from the first chamber to the second chamber;
An outdoor unit of an air conditioner having
A drain groove forming a part of the casing and extending from the first chamber to the second chamber in a concave shape is provided below the heat exchanger and at a position corresponding to the shape of the heat exchanger. A bottom plate with
a gap member disposed between the heat exchanger and the bottom plate and having a protrusion,
When the heat exchanger is disposed on the bottom plate , the protrusion is disposed in the drain, and the protrusion forms an interface between the first chamber and the second chamber in the drain. ,
An outdoor unit of an air conditioner characterized by: When the protrusion is placed in the drain groove, a gap having a first predetermined dimension is formed between the drain groove and the protrusion.
The outdoor unit of an air conditioner according to claim 1. The protruding portion has a penetration portion that allows water to flow from the first chamber to the second chamber .
The outdoor unit of an air conditioner according to claim 1 or 2, characterized in that:

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