JPH0375421A - Air conditioner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the evaporation of drain water applied to an air conditioner.

Conventional technologyIn air conditioners (hereinafter referred to as air conditioners) that originally applied refrigeration theory, condensed water (hereinafter referred to as drain water) is generated in the heat exchanger where the refrigerant evaporates during both cooling and heating operations. . Therefore, in order to drain the drain water outdoors, it is customary to install an appropriate outdoor drain pipe from the air conditioner, and the air conditioner is equipped with a drainage connection port for this purpose (Utility Model Opening in Showa 51). -134055).

Problems to be Solved by the Invention However, as mentioned above, conventional air conditioners require the installation of a drain pipe, which increases the cost of the air conditioner equipment, and secondly, the drain pipe becomes old and the water drains. The shi, go that I covered □
There was a problem in that troubles such as nuisances occurred.

In view of the above-mentioned problems, the present invention evaporates and scatters drain water, eliminates the need for installing a drain pipe, and therefore reduces equipment costs and eliminates troubles for air conditioners.

Means for Solving the Problems The present invention has a compressor, an indoor blower, an indoor heat exchanger, an outdoor blower, an outdoor heat exchanger, an indoor air intake and a discharge port, and an indoor drain. The refrigerant piping has a drain pipe placed at an angle from the pan to the outdoor drain pan, and a water pump is attached to the outdoor drain pan, and the water pipe is installed near the top of the indoor heat exchanger, so that the refrigerant piping becomes hot only during cooling. The structure is such that it is attached to the bottom of the outdoor drain pan.

Function: With the above-described configuration, the present invention allows drain water to evaporate and scatter even during heating and cooling, and drain water can be discharged outdoors without the need for a drain pipe for drain water.

EXAMPLE Hereinafter, an air conditioner according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a longitudinal sectional view of an air conditioner according to the present invention. FIG. 2 shows the refrigeration cycle diagram. In Figure 1, 1 is the compressor, 2 is the indoor blower, and 3 is the compressor.
is an indoor heat exchanger, 4 is an outdoor blower, 5 is an outdoor heat exchanger, 6 is an indoor drain pan, 7 is an outdoor drain pan, 8 is a drain pipe, 9 is a water pump, 1o is a water pipe, 11 is a refrigerant pipe that becomes hot only during cooling, and 12 is a box that houses these pipes. The part of the box that opens toward the building side has an intake port 13° and a discharge port 14 for outdoor air, and the other side has an intake port 16 and a discharge port 16 for indoor air.

The indoor side drain pan 6 of the indoor heat exchanger 30 is also located above the outdoor side drain pan 7, and a drain pipe 8 is arranged to be inclined from the indoor side drain pan 6 to the outdoor side drain pan 7.

Furthermore, a refrigerant pipe 11 that becomes hot only during cooling is attached to the bottom surface of the outdoor drain pan 7 so that heat can be transferred thereto. In addition, the outdoor side drain pan 7 and the indoor side heat exchanger 3
A water pipe 1o extends through a water pump 9 from the upper part 1 of the pipe.

With reference to the above configuration, the treatment of drain water during cooling and heating will be explained. First, during cooling, the dehumidified water (hereinafter referred to as drain water) generated from the indoor air that has passed through the indoor heat exchanger (cooler in this case) in step 3 is passed through the drain pipe 8, and then transferred to the outdoor drain. bread 7
be led to.

A refrigerant pipe 11 (hereinafter referred to as a hot pipe) is attached to the bottom of the drain pan 7 through which high-temperature gas of the refrigerant circuit passes. This hot pipe will be briefly explained with reference to refrigeration pipes 5 to 5 in FIG. 2.

During cooling, the high-temperature refrigerant gas discharged from the compressor 1 passes through the four-way switching valve 17, passes through the hot pipe 11, is radiated by the external heat exchanger 6, becomes a liquid, is depressurized by the throttling device 18, and returns to the room. After evaporation (cooling) in the inner heat exchanger 3, it returns to the compressor. This is indicated by a solid arrow (→). During heating, high-temperature gas flows into the indoor heat exchanger by switching the four-way switching valve. As is clear from the above description, the hot pipe 11 is at a high temperature only during cooling. Therefore, this hot pipe 11
The heat causes the bottom of the drain pan to become warm and can serve as a heat source for the evaporation of drain water only during cooling. This is part a (where high temperature gas passes through this hot pipe during heating).
This is because when the hot pipe (FIG. 2) is used as a hot pipe, heat is radiated at the bottom of the drain pan 7, resulting in a decrease in heating capacity.

The drain water led to the drain pan 7 during the above-mentioned cooling is passed through the pot pipe 11 and evaporates from the drain pan 7 which has reached a high temperature. In the unlikely event that the amount of Citrene water generated is large compared to the amount of evaporation, the drain water will accumulate in the drain pan 7, but in this case, the Citrene water will be scattered around the outer circumference of the fan 4 and released out of the building along with the blown air. . As described above, drain piping is not required during cooling. On the other hand, during heating, drain water is generated by the outdoor heat exchanger 5.

This generated drain water is dropped by the water pump 9 through the water pipe 10 near the top of the indoor heat exchanger 3 (which is at a high temperature due to heating), and is scattered by the wind from the indoor fan 2. However, it evaporates in the heat exchanger 3 and is assimilated with the indoor air, which acts as a humidifier. In the unlikely event that the amount of Citrene water generated is large enough to evaporate, it flows out through the drain pipe 8 and into the drain pan 7, and is scattered by the fan and released outside the building, just as it is during cooling.

As described above, according to this embodiment, the indoor heat exchanger and drain pan are connected to the outdoor heat exchanger and drain pan by the drain pipe, and the water in the outdoor drain pan is transferred to the indoor heat exchanger and the drain pan. The water is transferred by a water pump and a water pipe, and there is a hot pipe at the bottom of the outdoor drain pan that evaporates only during cooling, so the hot pipe (outdoor drain pan) evaporates the drain water during cooling. In addition, during heating, the drain water is evaporated in the indoor heat exchanger, so there is no need for conventional drainage pipe construction during heating and cooling. Therefore, it is possible to reduce the equipment cost of the air conditioner and eliminate the problem of drain pipes and water leaks.

Effects of the Invention As described above, the present invention connects an indoor drain pan and an outdoor drain pan with a drain pipe, and uses a water pump and a water pipe to sprinkle water from the outdoor drain pan onto an indoor heat exchanger. Because there is a hot pipe at the bottom of the outdoor drain pan that performs evaporation only during cooling,
During cooling, the drain water evaporates in this hot pipe.

In addition, during heating, the drain water is evaporated in the indoor heat exchanger, so there is no need for conventional drainage pipe construction during heating and cooling. Therefore, it provides a reduction in equipment costs for air conditioners and eliminates troubles such as drainage pipe trenches and water leaks.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a refrigeration cycle diagram corresponding to FIG. 1. 1...Compressor, 2...Indoor blower,
3...Indoor heat exchanger, 4...Outdoor blower, 5...Outdoor heat exchanger, 6...
・Indoor drain pan, 7...Outdoor drain pan, 8...Drain pipe, 9...
Water pump, 1o...Water pipe, 12...
...Box body, 13...Indoor air intake port, 1
4...Outdoor air outlet, 16...
Indoor air intake port, 16... Indoor air outlet.

Claims (1)

[Claims] It has a compressor, an indoor blower, an indoor heat exchanger, an outdoor blower, an outdoor heat exchanger, an indoor air intake and a discharge port, and is arranged at an angle from the indoor drain pan to the outdoor drain pan. At the same time, a water pump was attached to the outdoor drain pan, and the water pipe was installed near the top of the indoor heat exchanger, and the refrigerant piping, which becomes hot only during cooling, was installed at the bottom of the outdoor drain pan. Characteristic air conditioner.