JPH08200745A - Drain disposing structure for outdoor unit - Google Patents

Abstract

PURPOSE: To effectively discharge drain dropped from the evaporator in an outdoor unit from a drain port at the time of heating. CONSTITUTION: A refrigerating cycle having a compressor 1, a condenser 2, and an evaporator 3 is provided in such a manner that the evaporator 3 and the compressor 1 are formed in the same frame 4 as that for forming an outdoor unit at the time of heating, a blower 5 is mounted near the evaporator 3, the refrigerator liquefied by the condenser 1 in the indoor unit is evaporated by the evaporator 3, the air passed through the evaporator 3 is cooled and vapor is liquefied by the blower 5. The bottom plate of the frame 4 is formed with a drain channel 7 inclined toward the drain port 6 down of the compressor 1, the drain dropped by liquefying by the evaporator 3 is fed to the port 6 along the channel 7, and effectively discharged from the port 6 without icing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to drainage of drain water generated from an evaporator provided in an outdoor unit during heating operation of an air conditioner.

[0002]

2. Description of the Related Art An air conditioner has a refrigeration cycle including a compressor for compressing a refrigerant, a condenser for liquefying a high-temperature and high-pressure refrigerant compressed by the compressor, and an evaporator for vaporizing the refrigerant that has become a liquid in the condenser. I have it.

In a separate type outdoor unit for heating, the compressor and the evaporator are located in the same frame, a blower is provided in the vicinity of the evaporator, and the blower cools the evaporator. At this time, drain water is generated by cooling the air passing through the evaporator, the drain water is dropped on the bottom plate of the frame body, and drain water is drained to the outside of the frame body from a drain port provided at the bottom of the evaporator. Is.

[0004]

The evaporator during the heating operation is cooled because the liquid refrigerant is vaporized, and the air sent by the blower is cooled so that drain water is generated. The drain water freezes when the outdoor air temperature is low.

As described above, since the evaporator is repeatedly frozen and thawed, the drain water during the heating operation and the drain water melted during the thawing are frozen by the cool air near the drain port below the evaporator, and the evaporator is also frozen. The ice that accumulates at the bottom of the box may grow and cover the drain port below, and drain water may accumulate in the frame.
In this state, the drain water may overflow from the periphery of the bottom plate of the frame and may freeze.

[0006]

In order to solve the above-mentioned problems, the present invention provides a compressor 1 for compressing a refrigerant, a condenser 2 for liquefying a refrigerant which is compressed by the compressor 1 and becomes high temperature and high pressure, and the condenser. A refrigeration cycle having an evaporator 3 for vaporizing the refrigerant liquefied in 2 is provided, and the compressor 1 and the evaporator 3 are located in the same frame 4 during the heating operation, and a blower 5 is provided in the vicinity of the evaporator 3.
In the air conditioner for cooling the evaporator 3 by the blower 5, a drain port 6 is formed below the compressor 1 on the bottom plate of the frame body 4 to which the compressor 1 is attached,
Moreover, a drain water flow path 7 facing the drainage port 6 is provided on the bottom plate of the frame body 4 below the evaporator 3, and drain water is drained from the drainage port 6 below the compressor 1.

Regarding the structure for guiding the drain water to the drain port 6 below the compressor 1, if the bottom plate of the frame 4 below the evaporator 3 is inclined toward the drain port 6 to form the drain water flow path 7. The flow path to the drainage port 6 can be secured even if the ice pieces falling from the evaporator 3 interfere.

[0008]

When the air conditioner is operated for heating, the evaporator 3 of the outdoor unit, in which the refrigerant liquefied in the condenser 2 is vaporized, is cooled, and the refrigerant is warmed by the temperature of the air sent by the blower 5 to become a gas and the compressor 1 Sent to.

At this time, the water vapor in the air is evaporated by the evaporator 3.
The drain water that is cooled and condensed by the
Drop on the bottom plate of. Since the drain port 6 for drain water is provided below the compressor 1, the dropped drain water flows toward the lower side of the compressor 1 along the drain water flow path 7 on the bottom surface of the frame body 4, and is smoothly drained from the drain port 6. Is what
Even if the lower part or the lower part of the evaporator 3 is frozen, the lower part of the compressor 2 having a high temperature is hardly affected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure will be described below with reference to the drawings shown in the embodiments. 1 is a compressor for compressing a refrigerant, 2 is a condenser for liquefying a high-temperature high-pressure gaseous refrigerant, and 3 is an evaporator for gasifying the liquefied refrigerant. Yes, the refrigerant is circulated to form a refrigeration cycle.

The refrigerant during the heating operation is the condenser 2 of the indoor unit.
The refrigerant that was liquefied and became liquid was the evaporator 3 of the outdoor unit.
To vaporize and cool the evaporator 3. Therefore, the water vapor in the air passing through the evaporator 3 is condensed to drain water, while the gasified refrigerant is returned to the compressor 1 and compressed.

Reference numeral 4 is a frame of an outdoor unit equipped with a compressor 1 and an evaporator 3 during heating operation, and 5 is a blower provided in the frame 4 in the vicinity of the evaporator 3 and cooled by vaporizing a refrigerant. The evaporator 3 is warmed by the air sent by the blower 5, while the air is cooled and blown out as cold air.

Reference numeral 6 is a drain port formed in the bottom plate of the frame 4 below the compressor 1, and 7 is a drain water flow channel formed from below the evaporator 3 toward the drain port 6 below the compressor 1. The channel 7 is formed in a groove shape on the bottom plate of the frame body 4, or the bottom plate of the frame body 4 is inclined from below the evaporator 3 toward the drain port 6 so that drain water flows to the drain port 6 along the inclined surface. It should be set to.

The evaporator 3 is operated during the heating operation of the air conditioner.
The drain water generated in 1 is dropped on the bottom plate of the frame body 4, flows along the drain water flow path 7 to the drain port 6 below the compressor 1, and drain water is drained from the drain port 6, so that the lower portion of the evaporator 3 is Even if the ice sticks, the drainage port 6 does not stick to the ice because the compressor 1 is warm, and the drain water can always be stably discharged.

Therefore, if the surface of the evaporator 3 freezes during the heating operation, the thawing operation mode is set to melt the ice, but if the ice is not completely melted and the heating operation is resumed,
The adhered ice may grow again and reach the bottom plate of the frame body 4. In this invention, there is no drainage port below the evaporator 3, and the trouble that the drainage port is blocked by the grown ice does not occur. Further, even if a large piece of ice drops during the thawing operation, the compressor 1 that flows through the drain water flow path 7 and becomes high temperature
Since the ice pieces melted near to, troubles due to poor drainage drainage did not occur.

Reference numeral 8 denotes a drain drain plug attached to the drainage port 6, which does not allow drainage water to flow to the lower portion of the drainage port 6.
It works as a pipe connecting tool when drain water is made to flow to a predetermined place using a drain pipe.

[0017]

EFFECTS OF THE INVENTION The present invention has the above-described structure and operation. Even when the lower portion and the lower portion of the evaporator 3 are frozen during the heating operation, the drain port 6 is warmed by the heat generated by the compressor 1. , Drain water freezes and drain port 6
It will not cover the.

Therefore, there is no fear that the drain water liquefied by the evaporator 3 will be accumulated in the frame 4 of the outdoor unit, and
Drain water can now be stably discharged without overflowing around the bottom plate of the frame body 4.

Further, even if ice that cannot be completely thawed and falls as ice pieces when the evaporator 3 is thawed, the ice pieces flow toward the compressor 1 along the drain water flow path 7, so if the ice pieces are brought close to the compressor 1. It is melted by the heat of the compressor 1 and can be reliably drained from the drain port 6.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Compressor 2 Condenser 3 Evaporator 4 Frame of outdoor unit 5 Blower 6 Drain port 7 Drain water flow path

Claims (2)

[Claims] 1. A refrigeration cycle having a compressor 1 for compressing a refrigerant, a condenser 2 for liquefying the refrigerant compressed by the compressor 1 to be high temperature and high pressure, and an evaporator 3 for vaporizing the refrigerant liquefied by the condenser 2. Is provided, the compressor 1 and the evaporator 3 are located in the same frame 4 during the heating operation, and the blower 5 is provided in the vicinity of the evaporator 3.
In the air conditioner for cooling the evaporator 3 with the blower 5, the bottom plate of the frame body 4 to which the compressor 1 is attached has the drain port 6 formed below the compressor 1 and the frame body 4 below the evaporator 3. The bottom plate has a drain water flow path 7 that faces the drain port 6, and drain water is drained from the drain port 6 below the compressor 1 for the outdoor unit. 2. The drain water treatment structure for an outdoor unit according to claim 1, wherein the bottom plate of the frame body 4 below the evaporator 3 is inclined toward the drain port 6 to form a drain water flow passage 7.