JP6493023B2 - Air conditioner outdoor unit - Google Patents

Description

The present invention relates to an outdoor unit of an air conditioner including a base heater that prevents freezing of drain water on a bottom plate.

In a heat pump type air conditioner, moisture in the outside air may form frost on the heat exchanger of the outdoor unit that functions as an evaporator during heating operation. When the heating operation is performed in a state where the heat exchanger is frosted, the heat exchange capacity is reduced, and therefore, a defrosting operation is performed to remove frost formed on the heat exchanger.

When the defrosting operation is performed, the frost that has been frosted on the heat exchanger is melted and dripped onto the bottom plate of the outdoor unit from the heat exchanger to become drain water, and is provided on the bottom plate from the bottom plate to the outside of the outdoor unit. It is discharged through the outlet. However, in outdoor units that are used at low outdoor temperatures such as in cold regions, the drain water is re-frozen on the bottom plate before being discharged to the outside of the outdoor unit. When grown, the air conditioner may become inoperable due to ice coming into contact with the fan.

Therefore, in an outdoor unit of an air conditioner used under a low outside temperature, a base heater is disposed on the bottom plate, and the base plate is heated to generate heat by energizing the base heater to prevent refreezing of drain water. It has become.

In such an outdoor unit of an air conditioner, it is desirable that the base heater is fixed in contact with the upper surface of the bottom plate so that the bottom plate can be easily warmed. For this reason, an air conditioner that can be fixed by pressing against the upper surface of the bottom plate while enclosing the parallel-arranged portions of the base heater, which are bent on the upper surface of the bottom plate, with the recesses provided on the left and right sides of the fixture, respectively. An outdoor unit is known. (For example, refer to Patent Document 1).

JP 2004-69220 A (pages 3 to 4, FIG. 1)

However, the outdoor unit of the air conditioner of Patent Document 1 is designed to prevent the base heater from deviating from a predetermined position or floating from the upper surface of the bottom plate when vibration or the like occurs due to operation or transportation of the outdoor unit. However, there has been a problem that a plurality of separate fasteners must be provided.

Furthermore, in order to prevent the person's finger from entering the base heater and the heat exchanger in general, it is necessary to make the discharge port provided in the bottom plate so small that the person's finger cannot be inserted. There is also a problem that it is difficult to improve drain water drainage unless a large number of small-diameter discharge ports are provided.

An object of the present invention is to solve the above-described problems, and to provide an outdoor unit of an air conditioner that can eliminate a fixture and can secure a drainage amount of drain water.

In order to solve the above-described problems, the present invention is the invention described in claim 1 of the present invention, wherein the bottom plate of the housing has a bottom plate, a base heater is disposed on the top surface of the bottom plate, and the top of the bottom plate is provided. In an outdoor unit of an air conditioner to which a heat exchanger is fixed, an opening serving as a discharge port for draining drained water formed by cutting and raising the cut and raised pieces, and a cut and raised piece formed by cutting and raising the bottom plate The cut-and-raised piece is bent at a predetermined height from the upper surface of the bottom plate in a direction opposite to the opening and is formed at a predetermined distance from the opening to fix the base heater. have a fixed portion, the opening is being formed at a position closer to the heat exchanger than the bent portions.

According to a second aspect of the present invention, an insertion path for inserting the base heater into the fixed portion is formed between the bottom plate and the tip side of the cut and raised piece facing the bottom plate. It is characterized by that.

Further, the invention according to claim 3 of the present invention is characterized in that the opening is formed in a rectangular shape having a size that a human finger cannot be inserted, and a short side thereof is adjacent to the cut and raised piece. To do.

The invention according to claim 4 of the present invention is characterized in that a screw hole for inserting a screw is formed on the tip side of the cut and raised piece.

According to the outdoor unit for an air conditioner of the present invention, it is possible to eliminate the need for a fixture for fixing the base heater on the bottom plate, thereby reducing the component cost of the outdoor unit. Moreover, since the opening is cut and raised and formed in a position closer to the heat exchanger than the piece, the amount of drain water can be secured.

It is a disassembled perspective view which shows the structure of the outdoor unit of the air conditioner by this invention. It is a perspective view which shows the raising and raising of the baseplate by this invention. It is sectional drawing of the fixing | fixed part formed in the baseplate by this invention. It is a top view which shows the base plate fixed to the upper surface of the bottom plate and bottom plate by this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings. Note that 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.

FIG. 1 is an exploded perspective view showing a configuration of an outdoor unit of an air conditioner according to the present invention. The outdoor unit 100 of the air conditioner includes a box-shaped housing formed by a front panel 500, a left side panel 300, a right side panel 400, a ceiling panel 600, a bottom plate 200, and a rear guard 700.

The interior of the outdoor unit 100 is partitioned into a heat exchange chamber 800 on the left side and a machine room 900 on the right side by the partition plate 5 fixed to the bottom plate 200, with the partition plate 5 being sandwiched between them. The heat exchanger 2 formed in an L shape along the left side panel 300 and the rear guard 700, the blower fan 3, the fan motor 31, and the base heater 6 are provided. On the other hand, on the machine room 900 side, an electrical component box 4 in which a compressor 1 and piping parts such as a four-way valve and an expansion valve (both are not shown) and a substrate for controlling the outdoor unit 100 are stored is provided. .

FIG. 2 is a perspective view showing the cut and raised pieces 210A and 210B and the opening 220 of the bottom plate 200 according to the present invention. The bottom plate 200 is cut and raised pieces 210A and 210B obtained by cutting and raising the bottom plate 200 into a rectangular shape, and a drain outlet for draining drain water from the bottom plate 200. The opening formed by cutting and raising pieces 210A and 210B from the bottom plate 200. Part 220 is provided. In FIG. 2, description will be made using a cut-and-raised piece 210A having no screw hole and a cut-and-raised piece 210B having a screw hole, which will be described later.

On the cut-and-raised pieces 210A and 210B, a folded portion 211 is formed which is bent upward from the upper surface of the bottom plate 200 at a predetermined height L3 (for example, 5 mm) in the opposite direction to the discharge port 220 side.

The cut and raised pieces 210 </ b> A and 210 </ b> B are formed with a fixing portion 212 that fixes the base heater 6 to the upper surface of the bottom plate 200 at a position separated from the opening 220 by a predetermined distance L <b> 4 (for example, 15 mm). A tip 213 or a tip 214 is formed on the tip side. A screw hole 250 through which a screw to be described later is inserted to fix the base heater 6 to the upper surface of the bottom plate 200 is formed at the tip 214 of the cut and raised piece 210B.

The opening 220 is formed in a rectangular shape in which the side length L2 extending from the cut and raised pieces 210A and 210B in the direction toward the opening 220 is longer than the length L1 of the side adjacent to the cut and raised pieces 210A and 210B. Has been. This rectangular shape has a short side length L1 of, for example, 10 mm so that a human finger cannot be inserted from the outside. Further, in order to secure the opening area of the opening 220 and improve the drainage of drain water on the bottom plate 200, the length L2 of the long side is, for example, 30 mm.

FIG. 3 is a cross-sectional view of cut and raised pieces 210A and 210B formed on the bottom plate according to the present invention. An insertion path which is a gap for inserting the base heater 6 into the fixed portion 212 between the tip portions 213 and 214 of the cut and raised pieces 210A and 210B and the bottom plate 200 facing the lower side of the tip portions 213 and 214. 240 is formed, and the base heater 6 can be guided from the insertion path 240 to the fixed portion 212.

The bottom plate 200 is a sheet metal press-molded product, and has a predetermined plate thickness that provides a strength for fixing and holding the compressor 1 and the like provided in the outdoor unit 100, and the base heater 6 is inserted. When inserting from the path 240 into the fixing portion 212, it is difficult to widen the insertion path 240 by deforming the cut and raised pieces 210A and 210B. Therefore, the folded portion 211 of the cut and raised pieces 210A and 210B is bent at a predetermined height L3 from the upper surface of the bottom plate 200, and a fixed portion 212 is formed at a position separated from the opening 220 by a predetermined length L4. The tip portions 213 and 214 are easily deformed upward by separating the distance from the opening 220 to the fixed portion 230 by a certain distance (L3 + L4).

Further, the screw hole 250 formed in the tip end portion 214 of the cut and raised piece 210B is provided for inserting the screw 260 after the base heater 6 is inserted into the fixing portion 230. By inserting the screw 260, the screw hole 250 is inserted. The cut and raised piece 210B can fix the base heater 6 between the fixed portion 212 and the upper surface of the bottom plate 200 more reliably than the cut and raised piece 210A.

2 and 3, since the cut-and-raised pieces 210A and 210B can be lengthened by making the long side L2 of the opening 220 longer than the short side L1, the fixing portion 212, the screw It is possible to ensure a sufficient length for providing the hole 250 and the distance (L3 + L4) from the opening 220 to the fixed portion 212.

FIG. 4 is a plan view showing the bottom plate 200 and the base heater 6 fixed to the upper surface of the bottom plate according to the present invention. The bottom plate 200 on the heat exchange chamber side is formed with a plurality of cut and raised pieces 210A and openings 220, and the base heater 6 formed by bending into a frame shape is inserted into the fixing portion 212 of each cut and raised piece 210A. Thus, the base heater 6 can be fixed to the bottom plate 200. Further, the drain water dropped on the upper surface of the bottom plate 200 can be drained from each opening 220.

2 and 3, in the vicinity of the heat exchanger 2 formed in an L shape along the rear guard 700 side and the left side panel 300 side of the outdoor unit 100 described in FIG. 1. 4 is formed at a position closer to the heat exchanger 2 than the cut and raised piece 210A so that drain water dropped from the heat exchanger 2 onto the upper surface of the bottom plate 200 can be drained efficiently. The

As described with reference to FIGS. 2 to 4, by cutting and raising the bottom plate 200 and forming the cut and raised pieces 210 </ b> A and the opening 220, a fixture for fixing the base heater 6 on the bottom plate 200 becomes unnecessary. Therefore, the component cost of the outdoor unit 100 can be reduced. Further, the opening 220C is cut and raised and formed at a position closer to the heat exchanger 2 than the piece 210A, draining drain water efficiently, and widening the opening area as compared to forming the opening 220 elongated and circular. Thus, the drainage amount of drain water can be secured.

DESCRIPTION OF SYMBOLS 1 Compressor 2 Heat exchanger 3 Blower fan 31 Fan motor 4 Electrical component box 5 Partition plate 6 Base heater 100 Outdoor unit 200 Bottom plate 210A, 210B Cut-and-raised piece 211 Folding part 212 Fixing part 213, 214 Tip part 220, 220C Opening part 240 Insertion path 250 Screw hole 260 Screw 300 Left side panel 400 Right side panel 500 Front panel 600 Ceiling panel 700 Rear guard 800 Heat exchange chamber 900 Machine room

Claims (4)

In an outdoor unit of an air conditioner having a bottom plate on the bottom surface of the housing, a base heater disposed on the top surface of the bottom plate, and a heat exchanger fixed on the top of the bottom plate, the bottom plate is formed by cutting and raising the bottom plate. A cut and raised piece and an opening serving as a discharge port for draining drain water generated by cutting and raising the cut and raised piece, and the cut and raised piece has a predetermined height from the upper surface of the bottom plate. formed with bent in opposite directions at a position at a predetermined distance from the opening to have a fixing unit for fixing the base heater, the opening is formed at a position closer to the heat exchanger than the bent portions The outdoor unit of the air conditioner characterized by being made .   2. The air conditioner according to claim 1, wherein an insertion path for inserting the base heater into the fixed portion is formed between the bottom plate and a leading end side of the cut and raised piece facing the bottom plate. Outdoor unit.   2. The outdoor unit for an air conditioner according to claim 1, wherein the opening is formed in a rectangular shape that cannot be inserted by a human finger, and a short side thereof is adjacent to the cut and raised piece. The outdoor unit for an air conditioner according to claim 1, wherein a screw hole for inserting a screw is formed on a tip side of the cut and raised piece.

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