JPH0618823U - Air conditioner outdoor unit - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevent drain water from freezing even when the outside temperature is below zero by facilitating drain water flow. [Structure] The outdoor unit includes a heat exchanger 1, a drain pan 2 for collecting drain water defrosted by the heat exchanger 1, and a blower for blowing outside air to the heat exchanger 1. Drain hole 4 for discharging drain water generated during defrosting after heating operation to the outside of the machine
And a groove 3 for flowing into the drain hole 4 of the drain pan 2 are provided.
A Teflon tape 5 is attached to, and the heat exchanger 1 is installed above the groove 3. The drain water defrosted from the heat exchanger 1 flows down to the drain pan 2, and the drain water flowing in the groove 3 of the drain pan 2 is made easy to flow, so that the drain water is prevented from freezing even when the outside temperature is below zero.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drain water treatment structure for an outdoor unit such as an air conditioner.

[0002]

[Prior art]

 FIG. 4 is a schematic side sectional view showing an outdoor unit of a conventional air conditioner. As shown in FIG. 4, the outdoor unit includes a heat exchanger 1, a drain pan 2 for collecting drain water defrosted by the heat exchanger 1, and a blower 7 for blowing outside air to the heat exchanger 1. Has been done.

The drain pan 2 is provided with a groove 3 for facilitating the flow of drain water defrosted by the heat exchanger 1, and a drain hole 4 for discharging the drain water. The heat exchanger 1 is installed above the groove 3, and the drain water defrosted by the heat exchanger 1 remains in the groove 3 of the drain pan 2 and therefore remains in the groove 3 when the outside air temperature is below zero. The drain water freezes, and the frozen drain water 8 adheres to the drain pan 2. The blower 7 is composed of a propeller fan 7a that blows outside air to the heat exchanger 1 and a fan motor 7b that rotates the propeller fan 7a, and is attached to the drain pan 2 at a motor angle (not shown). ing.

In the outdoor unit of the air conditioner configured as described above, outside air is blown to the heat exchanger 1 by the blower 7, heat is exchanged by the heat exchanger 1, and heating operation is performed for a certain period of time. Since frost adheres to the heat exchanger 1 and the ability of heat exchange is reduced, the heating operation is stopped and the defrosting operation is performed, and hot gas is caused to flow backward to the heat exchanger 1 to thaw the frost. Then, the thawed frost becomes drain water and flows down to the drain pan 2 below, and flows out of the machine from the drain hole 4 of the drain pan 2.

At this time, if the outside air temperature is below zero, the drain water defrosted by the heat exchanger 1 remains on the surface of the drain pan 2 to become the frozen drain water 8, and when defrosting is repeated, Freezing occurs in the groove 3 of the drain pan 2 and the portion of the heat exchanger 1, and in order to prevent this freezing, the defrosting time is extended to completely defrost or a heater is provided. It was done either by forced defrosting.

[0006]

[Problems to be solved by the device]

 However, even if the defrosting time is extended and defrosting is performed, the plate thickness of the drain pan 2 is 1 to 1. Since a sheet metal press of about 2 mm is required and there is a limit to the drawing process for making the groove 3 inclined, it is difficult to completely flow the structure, and a heater can be arranged to force defrosting. However, there was a problem that the number of parts would increase because another mounting part was required.

The present invention has been made in order to solve such a problem, and by making the groove 3 of the drain pan 2 water repellent, drain water can easily flow and the number of parts can be increased. An object is to provide an outdoor unit of an air conditioner that can be eliminated.

[0008]

[Means for Solving the Problems]

 The outdoor unit of the air conditioner for achieving the above object includes a heat exchanger, a drain pan for collecting drain water defrosted by the heat exchanger, and a blower for blowing outside air to the heat exchanger. In the outdoor unit of the air conditioner provided with the above, a drain hole for discharging drain water generated during defrosting after heating operation to the outside of the machine and a groove for flowing to the drain hole of the drain pan are provided. Water-repellent treatment is applied to prevent drain water from remaining on.

[0009]

[Action]

 In the above configuration, by making the drain pan groove water-repellent, drain water can easily flow, and since drain water does not remain in the drain pan groove, drain water does not freeze even when the outside air temperature is below zero. Can be prevented.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same parts as those in the conventional example of the present invention are designated by the same reference numerals. 1 is a schematic perspective view showing an outdoor unit related to an outdoor unit of an air conditioner of the present invention, and FIG. 2 is a perspective view showing a drain pan according to a first embodiment of an outdoor unit of an air conditioner of the present invention. As shown in FIG. 1, the outdoor unit includes a heat exchanger 1, a drain pan 2 for collecting drain water defrosted by the heat exchanger 1, and a blower (not shown) for blowing outside air to the heat exchanger 1. ) And is composed of.

The drain pan 2 discharges drain water, a groove 3 for facilitating the flow of drain water defrosted by the heat exchanger 1, a Teflon tape 5 for facilitating the flow of drain water flowing in the groove 3, and drain water. A drainage hole 4 is provided, and the heat exchanger 1 is mounted above the groove 3.

The blower includes a propeller fan that blows outside air to the heat exchanger 1 and a fan motor that rotates the propeller fan, and is attached to the drain pan 2 at a motor angle (not shown). .

As shown in FIG. 2, a Teflon tape 5 is attached to the groove 3 of the drain pan 2.

In the first embodiment described above, by attaching the Teflon tape 5 to the groove 3 of the drain pan 2, the water repellency of the Teflon tape makes it easier for drain water to flow. Since there is no drain water left over, it is possible to prevent the drain water from freezing even when the outside temperature is below zero.

FIG. 3 is a perspective view showing a drain pan according to a second embodiment of the outdoor unit of the air conditioner of the present invention. FIG. 3 shows the structure shown in FIG. 1 in which a Teflon coating 6 is applied to the entire surface of the drain pan 2.

In the second embodiment described above, the Teflon coating 6 is applied to the groove 3 of the drain pan 2 so that the drain water easily flows due to the water repellency, like the Teflon tape, so that the groove 3 of the drain pan 2 can be easily discharged. Since the drain water does not remain, it is possible to prevent the drain water from freezing even when the outside temperature is below zero. Further, by applying the Teflon coating 6 to the entire surface of the drain pan 2, it is possible to prevent rust that often occurs in the coastal area.

[0017]

[Effect of device]

 The outdoor unit of the air conditioner of the present invention is configured as described above, and since the drain pan 2 can completely drain the drain water that has flowed down from the heat exchanger 1, the drain water can be drained. Can be prevented from freezing.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an outdoor unit related to an outdoor unit of an air conditioner of the present invention.

FIG. 2 is a perspective view showing a drain pan according to a first embodiment of an outdoor unit of an air conditioner of the present invention.

FIG. 3 is a perspective view showing a drain pan according to a second embodiment of the outdoor unit of the air conditioner of the present invention.

FIG. 4 is a schematic side sectional view showing an outdoor unit of a conventional air conditioner.

[Explanation of symbols]

 1 Heat Exchanger 2 Drain Pan 3 Groove 4 Drain Hole 5 Teflon Tape 6 Teflon Coating 7 Blower

Claims (1)

[Scope of utility model registration request] 1. An outdoor unit of an air conditioner comprising a heat exchanger, a drain pan for collecting drain water defrosted by the heat exchanger, and a blower for blowing outside air to the heat exchanger,
A drain hole for discharging drain water generated during defrosting after heating operation to the outside of the machine and a groove for flowing to the drain hole of the drain pan are provided, and a water repellent treatment is applied to prevent drain water from remaining in the groove of the drain pan. An outdoor unit of an air conditioner characterized by the above.