JPS60165444A - Drain discharging device for air conditioner - Google Patents

Abstract

PURPOSE:To prevent re-evaporation or generation of offensie smell of drain reserved in a drain pan by conducting the drain discharging device forcibly by a time limit relay for a predetermined period of time when the operation of the air conditioner is stopped. CONSTITUTION:The time limit relay T, operating for a given period of time after conduction, is connected to the contact (b) of an operation switch SW controlling the air conditioner. A drain pump motor PM, constituting the drain discharging device, is connected to an electric source in series with a float switch Fs, being connected or disconnected in accordance with the level of the drain Y in the drain pan D, while the contact Ta of the time limit relay T is connected in parallel with the float switch Fs. When the operation switch SW is being connected to the contact (b), voltage is not impressed on a solenokd contacter 52C for a compressor and the compressoris stopped. In this case, when the voltage is impressed on the time limit relay T and the contact Ta is closed, the voltage is impressed on the drain pump motor PM and the discharging operation is effected for a predetermined period of time to discharge the drain forcibly in spite of the operation of the float switch Fs. Accordingly, the forced discharging of the drain is effected upon every stopping of the operation, therefore, the re-evaporation or generation of offsensive smell of the drain may be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner having a forced drainage device for drain water.

Conventional configurations and their problems In general, in ceiling-suspended or built-in air conditioners, if the drain water cannot be drained naturally, the drain water is stored in a 1-well pan and forcedly drained when the water level rises. The normal method is to operate the device and drain the water.If the air conditioner is stopped using the operation switch, drain water will accumulate in the drain pan from the device mentioned above, and the drain water will be re-evaporated. There was a problem that it was necessary to do so, or that it generated bad odors.

Purpose of the Invention Therefore, in view of the above-mentioned problems, the present invention aims to prevent the re-evaporation of the drain water accumulated in the drain pan and the generation of bad odor.

Structure of the Invention In order to achieve this object, the present invention is configured such that after the air conditioner is stopped by the operation switch, the drain water is forcibly drained from the drain pan by powering the drain device for a predetermined period of time. .

Description of examples An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show an electric circuit and a drainage device of an air conditioner having a drain water drainage device of the present invention.

SW is an operation switch that controls the operation of the air conditioner, and the compressor electromagnetic contactor 52C that drives the compressor CM and the indoor fan FM are connected to the contact C, and the contact operates for a certain period of time after being energized. A time limit relay T is connected. PM
is a drain pump motor constituting the drainage device, and is connected to a power source in series with a float switch Fs that turns on and off according to the level of drain water Y in the drain pan D.

On the other hand, a contact Ta of a time limit relay T is connected in parallel with the float switch Fs.

In the above configuration, the operation switch SW is on the operation side, that is, when connected to the contact C, the compressor electromagnetic contactor 6
A voltage is applied to 2C, and the compressor CM is put into operation.

Further, a voltage is also applied to the indoor fan FM.

At this time, if the water level of the drain water Y has risen to the operating position of the float switch Fs, a voltage is applied to the drain pump motor PM, and the drain pump motor PM is brought into operation and the drain water Y is forcibly drained.

Conversely, when the operation switch SW is connected to the stop side, that is, to the contact point, the compressor electromagnetic contactor 62C[il],
The river is no longer applied and the compressor stops. At that time, a voltage is applied to the time limit relay T, its contact Ta is closed, and a voltage is applied to the drain pump motor PM, which is operated for a predetermined period of time regardless of the operation of the float switch Fs to strongly control the drain water. . Therefore, since water is forcibly drained every time the operation is stopped, evaporation of IIj' and generation of bad odor are prevented.

Effects of the Invention As is clear from the above explanation, according to the present invention, when the air conditioner is stopped by the operation switch, the drain device is forcibly energized for a predetermined time by the time-limited relay, so that drain water does not flow into the drain pan. There is no accumulation of drain water, and no re-evaporation of drain water or generation of bad odors. Furthermore, by stopping the drain water at a low water level in the drain pan, less electricity is applied to the drainage device when restarting the system, thereby preventing wasteful operation.

[Brief explanation of the drawing]

FIG. 1 is a schematic electrical circuit diagram of an air conditioner equipped with a drain water drainage device according to an embodiment of the present invention, and FIG. 2 is a sectional view of the drainage device. SW: Operation switch, T: Time limit device (time limit relay), Fs: Float switch, PM: Drain pump motor, CM:
・Compressor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 D

Claims (1)

[Claims] It consists of a drain pan that collects drain water, a float switch that detects the water level in the drain pan, a drain pump motor that is operated when the float switch detects a predetermined water level, and an operation switch that controls the operation of the compressor. A drain water drainage device for an air conditioner, which is provided with a timer that operates a drain pump motor for a predetermined period of time regardless of the float switch when the compressor is stopped by a switch.