JPH024141A - Drain water draining device for air conditioner - Google Patents

Abstract

PURPOSE:To detect an abnormality in the water level when, for instance, a drain pipe is clogged and issue an alarm for the abnormality by discharging the drain water automatically by the detection of the amount of drain water in a drain pan. CONSTITUTION:When the drain water is accumulated in a drain pan 1 by the operation of a pneumatic device and the water level of the drain water rises, the ring shaped float 21 of a water level sensor 2 thereby goes up. When the water level has reached a specified level, a ring-shaped magnet 25 which is enclosed in the ring-shaped float 21 actuates a lead switch 27 for sensing water level. By the actuation of the lead switch 27 a signal actuates a drain pump 3 through a signal line SL to discharge the drain water from the drain pan 1. If a filter 6 is clogged or the water level of the drain water in the drain pan 1 rises abnormally by an disorder of the drain pump 3, the ring-shaped float 21 rises fully to actuates a lead switch 26 for alarming. In this case a light 7 for warning the abnormal water level is lighted.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a drain water drainage device for an air conditioner.

[Description of Prior Art] Drain water from an air conditioner is temporarily stored in a drain tray, and then discharged outside by a drain pump.

Due to clogged drain piping, etc., the drain water could not be drained sufficiently, and there was a risk that the drain water would overflow from the drain pan.

[Problems to be Solved by the Invention] The first object of the present invention is to provide a drain water drainage device for an air conditioner that detects an abnormal water level and issues an abnormality alarm when a pipe is clogged. It is.

A second object of the present invention is to provide a compact drain water drainage device for an air conditioner.

[Means for solving the problem] The drain water drainage device for an air conditioner according to the present invention that achieves the above object includes a sensor means for detecting the level of drain water accumulated in the drain tray of the air conditioner, and an output signal from the sensor. It has an operating drain pump and a filter installed in the piping from the drain pan to the drain pump, and it detects the amount of drain water in the drain pan and automatically drains and drains the drain water. It has become.

The invention will be explained in more detail below in the form of an example and with reference to the accompanying drawings, in which: FIG.

DESCRIPTION OF EMBODIMENTS Referring to FIG. 1, a drain water drainage device for an air conditioner is schematically illustrated.

Drain water for the air conditioner accumulates in the drain pan 1.

When the drain water level reaches a predetermined level, the water level detection sensor 2 is excited and sends a signal to the drain pump 3 via the signal line SL. This causes the drain pump 3 to operate, sucking up the drain water 4 from the drain pan 1 through the piping 5.

Since the pipe 5 is provided with a filter 6, foreign matter is not sucked into the drain pump 3.

However, the filter 6 becomes clogged and the drain pan 1
When the water level inside becomes abnormally high, the water level detection sensor 2 turns on the abnormal water level warning light 7.

2 and 3 show details of the water level detection sensor 2 that detects the water level in the drain dish 1. FIG.

The water level detection sensor 2 is composed of a ring-shaped float 21 fitted into a hollow cylinder 22 with some play. This ring-shaped float 21 has a core material made of styrofoam or the like, and floats on water. Furthermore, a ring-shaped magnet 25 is embedded in the inner peripheral surface of the ring-shaped float 21.

Flange stoppers 23 are provided at the upper and lower ends of the hollow cylinder 22.
．． 24, the ring-shaped float 21 is
It does not fall out from the hollow cylinder 22. Furthermore, a hollow cylinder 22
The interior of the is kept watertight to the exterior. Inside the cylinder 22, a reed switch 27 for water level detection and a reed switch 26 for dispensing water level are arranged above it.

The operation of the drain water drainage device of the present invention will be explained.

When the drain water accumulates in the drain pan 1 and the water level of the drain water rises due to the operation of the air conditioner, the ring-shaped float 21 of the water level detection sensor 2 rises accordingly. When the water level reaches a predetermined level, the ring-shaped magnet 25 embedded in the ring-shaped float 21 moves the water level detection reed switch 2
Operate 7.

When the reed switch 27 operates, a signal is transmitted through the signal line SL to operate the drain pump 3 to discharge drain water from the drain pan 1.

When the water level of the drain water in the drain 11111 rises abnormally due to the filter 6 being clogged or the drain pump 3 malfunctioning, the ring-shaped float 21 rises sufficiently and activates the warning reed switch 26, thereby issuing an abnormal water level warning. Light 7 lights up.

Although the present invention has been described in detail in the form of the embodiments as described above, the present invention is not limited to the above embodiments, and can be variously modified within the scope of the claims.

For example, the water level detection sensor 2 can be achieved with a different configuration than that illustrated in FIGS. 2 and 3. That is, a known three-electrode type sensor for detecting the water level in an aquarium can also be used for this purpose.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing an embodiment of the drain water drainage device of the present invention. FIG. 2 is a perspective view of a water level detection sensor used in the drain water drainage device of the present invention. FIG. 3 is a cross-sectional view of the water level detection sensor. 1... Drain dish, 2... Water level detection sensor, 3...
Drain pump, 4... Drain water, 5... Piping, 6.
... Filter, 7 ... Abnormal water level warning light, 21 ... Ring-shaped float, 22 ... Hollow cylinder, 23.24 ...
・Flange stopper, 25...Ring magnet, 26・
... Warning reed switch, 27... Water level detection reed switch.

Claims (1)

[Claims] (1) A drain water drainage device for an air conditioner, comprising: sensor means for detecting the level of drain water collected in a drain pan of the air conditioner; a drain pump operated by an output signal from the sensor means; A drain water draining device for an air conditioner, comprising: a filter provided in the piping up to the drain pump; and detecting the amount of drain water in the drain pan and automatically draining the drain water. .