JPH09210409A - Outdoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assuredly prevent a drain failure in a drain hole on a base plate by opening a drain hole for emergency at a position higher than that of the drain hole on the base plate. SOLUTION: One or more of drain hole 105 for emergency having an opening at a position higher than that of a drain hole 104 is provided, in addition to the drain hole 104 opened at the lowest position of a base plate 1 to which a heat exchanger 3, a propeller fan 4, a compressor 7 of an outdoor unit or the like are attached. Even when the drain hole 104 is closed owing to freezing, drain can be rapidly exhausted outside by using the drain hole 105 for emergency and an inconvenience that the drain or rain water enters a compressor chamber 6 and the case of the compressor 7 is corroded can be cancelled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit for an air conditioner having at least one drain hole formed in the lowest portion of a base plate.

[0002]

2. Description of the Related Art Recently, air conditioners represented by so-called air conditioners have been remarkably popularized and have been installed in many households.

[0003] Such an air conditioner is composed of an indoor unit for blowing air for cooling and heating and an outdoor unit for generating a heat source required for cooling and heating.

The outdoor unit is installed under adverse conditions such as outside the house or on the balcony of an apartment, where it is relatively exposed to the weather.

However, conventionally, as such an outdoor unit, a rear panel 2 having an air inlet is provided on a base plate 1 as shown in FIG.
A heat exchanger 3 is arranged along the heat exchanger 3, a propeller fan 4 driven by a motor (not shown) is arranged on the front surface of the heat exchanger 3, and a partition plate 5 partitions the other corner of the rear panel 2. A compressor chamber 6 is formed, a compressor 7 is housed in the compressor chamber 6, and various types for controlling the drive of the propeller fan 4, the compressor 7, and other devices above the propeller fan 4 and the compressor chamber 6. Some control circuits 8 are provided.

Although the front surface and the upper surface of the base plate 1 are open in the drawing, a front panel and an air out grill (both not shown) are provided on the front surface side, and a top panel (not shown) is provided on the upper surface side. Has been.

FIG. 7 shows a base plate 1 applied to such an outdoor unit. On the surface of the base plate 1 is a protrusion for mounting the heat exchanger 3, the propeller fan 4, the compressor 7 and the like. 10
1, a screw hole 102, a screw portion 103, and the like are provided, and further, a drain drain hole 104 is formed in the lowest portion of the surface of the base plate 1.

The drain hole 104 is provided for discharging drainage caused by water droplets of dew condensation generated by the heat exchange operation of the heat exchanger 3 and rainwater entering the outdoor unit from the outside to the outside. The drain and rainwater collected in the lowest part along the surface of the base plate are discharged to the outside.

[0009]

However, in the outdoor unit configured as described above, especially when the heating operation is performed under the condition of low temperature in the severe cold season, the drain or the drain collected in the lowest portion on the base plate 1 is used. The rainwater freezes when passing through the drain hole 104, and the drain hole 1
May block 04. Then, when the drainage from the drain hole 104 is stopped, after that, the drain and rainwater on the bottom surface of the base plate 1 are cut off,
It may pass through under the partition plate 5 and enter the compressor chamber 6, which adversely affects the compressor 7 and other electric devices, which causes failure and life of the air conditioner to be significantly shortened. There was a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an outdoor unit of an air conditioner capable of reliably preventing defective drainage in a drain hole of a base plate.

[0011]

According to the first aspect of the present invention,
In an outdoor unit of an air conditioner in which at least one drain drain hole is bored in the lowest part of a base plate, at least one emergency drain drain hole is bored at a position higher than the drain drain hole. I am configuring.

According to a second aspect of the present invention, in the first aspect, a plurality of emergency drain drain holes are formed at different height positions.

According to a third aspect of the present invention, in the first aspect, the emergency drain drain hole is provided by burring or drawing.

As a result, according to the invention of claim 1,
Even if the drain drain hole formed in the lowest portion of the base plate is drained poorly due to freezing or the like, the drain drain hole for emergency can be used for quick drainage.

Further, according to the second aspect of the present invention, even when the drain hole for emergency is drained poorly due to freezing or the like, another drain for emergency located higher than the drain hole for emergency is provided. Water can be drained quickly from the hole.

According to the third aspect of the invention, the emergency drain hole can be processed by a simple construction method.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a schematic structure of an air conditioner to which the outdoor unit of the present invention is applied. In the figure, 1
1 is an indoor unit, on the surface of this indoor unit 11,
A suction grill 111 is provided, and this suction grill 11
1. Air filter 112 and clean filter 113 inside
Further, a heat exchanger and a cross flow fan (not shown) are arranged inside the clean filter 113 so that the air for cooling and heating generated in the heat exchanger is blown out from the outlet 114 by the rotation of the cross flow fan. ing.

An outdoor unit 13 is connected to such an indoor unit 11 via a connecting pipe / wiring 12. This outdoor unit 13 has an air outlet 1 on the front side.
31 is formed, and the side surface and the rear surface are formed in the air suction port 132.

Further, such an outdoor unit 13 is constructed as shown in FIG. 2 in which the same parts as those in FIG. In this case, as shown in FIG. 3, the base plate 1 of the outdoor unit 13 has a projection 101, a screw hole 102 and a screw 1 for mounting the heat exchanger 3, the propeller fan 4, the compressor 7, etc. on the surface thereof, as shown in FIG.
03, etc., a drain drain hole 104 is formed in the lowest portion of the base plate 1 surface, and an emergency drain drain hole 105 having an opening 105a is formed at a position higher than the drain drain hole 104. ing.

In this case, the emergency drain drain hole 105 is
As shown in FIG. 4, the opening 105a may be formed by burring so as to be located higher than the drain hole 104, or as shown in FIG.
You may form so that 05a may be higher than the drain hole 104.

The emergency drain holes 105 may be formed at a plurality of positions, and the height positions of the openings 105a may be different.

With such a construction, however, in the outdoor unit 13, drainage caused by water droplets of dew condensation generated by the heat exchange operation of the heat exchanger 3 and rainwater entering from the outside into the outdoor unit 13 are on the surface of the base plate 1. Along the bottom of the drainage hole 104 and drained to the outside.

Here, for example, in the heating operation under low temperature in the severe cold season, drainage and rainwater collected in the lowest portion on the base plate 1 are frozen and drained when passing through the drainage drain hole 104. Even when the hole 104 is blocked, these drains and rainwater temporarily stop on the bottom surface of the base plate 1, but when this amount reaches the height of the opening 105a of the emergency drain drain hole 105,
It is possible to prevent the situation in which drainage and rainwater pass through under the partition plate 5 and enter the compressor chamber 6 immediately after being drained quickly through the emergency drain drain hole 105.

Therefore, by doing so, the heat exchanger 3, the propeller fan 4, and the compressor 7 of the outdoor unit 13
In addition to the drain drain hole 104 formed in the lowest portion of the base plate 1 for mounting the drain drain hole 1
Since the emergency drain drain hole having the opening 105a is formed at a position higher than 04, even if the drain drain hole 104 is blocked due to freezing or the like,
The drain can be quickly drained to the outside by using the emergency drain drain hole 105, and the inconvenience of drain or rainwater entering the compressor chamber 6 and corroding the case of the compressor 7 can be eliminated. It is possible to eliminate an adverse effect on the life of the harmony machine.

Further, since the emergency drain drain holes 105 are formed at a plurality of positions and the height positions of the respective openings 105a are made different, the drain drain holes 10 are formed.
If drainage failure occurs due to freezing or the like in the emergency drain drain hole 105 subsequent to 4, drainage should be performed from other emergency drain drain holes 105 located higher than the emergency drain drain hole 105. Also, the drainage drainage reliability can be further improved.

Further, since the emergency drain hole 105 is formed by burring or drawing, such an emergency drain hole 105 can be processed by a simple construction method.

[0028]

As described above, according to the present invention, even if the drain drain hole formed in the lowest portion of the base plate becomes defective in drainage due to freezing or the like, the drain drain hole for emergency drains water quickly. As a result, it is possible to reliably prevent water from entering the compressor room, eliminate the inconvenience to the compressor case in the compressor room and other electrical equipment, and eliminate the failure and adverse effect on the life of the air conditioner. it can.

Further, even if the drainage hole for emergency drainage becomes defective due to freezing or the like, the drainage hole for drainage can be drained more quickly than the other drainage drain holes for emergency located at a position higher than this drain hole for emergency drainage. The reliability of drainage water can be further improved.

The emergency drain hole may be formed by a simple method such as burring or drawing.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an air conditioner to which an outdoor unit according to an embodiment of the present invention is applied.

FIG. 2 is a diagram showing a schematic configuration of an outdoor unit of one embodiment.

FIG. 3 is a diagram showing a schematic configuration of a base plate used in the outdoor unit according to the embodiment.

FIG. 4 is a diagram for explaining a method of processing an emergency drain hole formed in the outdoor unit according to the embodiment.

FIG. 5 is a diagram for explaining a method of processing an emergency drain hole formed in the outdoor unit according to the embodiment.

FIG. 6 is a diagram showing a schematic configuration of a conventional outdoor unit.

FIG. 7 is a diagram showing a schematic configuration of a base plate used in a conventional outdoor unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base plate, 101 ... Protrusion, 102 ... Screw hole, 103 ... Screw part, 104 ... Drain drain hole, 105 ... Emergency drain drain hole, 105a ... Opening, 2 ... Rear panel, 3 ... Heat exchanger, 4 ... Propeller fan , 5 ... Partition plate, 6 ... Compressor chamber, 7 ... Compressor, 8 ... Control circuit, 11 ... Indoor unit, 111 ... Suction grille, 112 ... Air filter, 113 ... Clean filter, 114 ... Outlet port, 12 ... Connection piping / wiring , 13 ... Outdoor unit, 131 ... Air outlet, 132 ... Air inlet.

Claims (3)

[Claims] 1. An outdoor unit for an air conditioner, wherein at least one drain drain hole is formed in the lowest portion of a base plate, and at least one emergency drain drain hole is provided at a position higher than the drain drain hole. An outdoor unit for an air conditioner, which is formed by drilling. 2. The outdoor unit for an air conditioner according to claim 1, wherein a plurality of emergency drain holes are formed at different height positions. 3. The outdoor unit for an air conditioner according to claim 1, wherein the emergency drain drain hole is formed by burring or drawing.