JPS62175545A - Drain pump control device for air-conditioning machine - Google Patents

Abstract

PURPOSE:To prevent articles in a living room from spoiling by drain water by a method wherein the operating period of a drain pump is determined by a timer during the operation of a compressor and cooling operation as well as dehumidifying operation are stopped when a water level detecting sensor is put ON. CONSTITUTION:The titled device is provided with a water receiving pan 2, reserving drain water generated in a heat exchanger 1 by condensation, 2 drain pump 3 for discharging the drain water and a water level detecting sensor 6, detecting the overflow of the drain water from the water receiving pan 2 before the overflow of the same. The operation of the drain pump 3 is controlled by timers 8, 14 while the operation of an air-conditioning machine is stopped when the water level detecting sensor 6 detects the water level. As a result, the drain water will never overflow the water receiving pan 2 and, accordingly, ceiling, wall surfaces, articles in a closet or the like will never be contaminated and comfortable air condition may be effected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a drain pump control device fft for discharging drain water accumulated in a water tray of an air conditioner.

BACKGROUND OF THE INVENTION In recent years, in order to make effective use of living rooms and improve aesthetics, there has been a rapid increase in the so-called built-in air conditioners, in which most air conditioners are recessed into ceilings or closets. For this reason, it is no longer possible to drain the drain water generated during cooling or dehumidifying operation using the natural head, and a device that forcibly drains the drain water has become necessary.

An example of the above-mentioned drain pump control device will be described below with reference to the drawings.

FIG. 4 shows a conventional drain pump operation control device.

In the same figure, 101 is a heat exchanger, 102 is a water receiver 1+1
L, 103 is a drain pump, 104 is a control device, 10
5 is a water level II output sensor, and 106 is a drain hose. When the water level detection sensor 105 is turned on, the drain pump 103 is operated to discharge drain water. Further, when the water level detection sensor does not turn off even after the drain pump operates for a predetermined period of time, the control device 104 stops the cooling operation.

Problems to be Solved by the Invention However, in the +116 configuration as described above, the drain pump 103 for discharging drain water may break or the drain hose 106 may become clogged, making it difficult to discharge drain water. If the drain water is no longer able to be used, the drain water overflows the water tray 102 to operate the air conditioner for a predetermined period of time, soiling the ceiling, walls, and things in the closet.

In addition, when drain water is being discharged, the water level detection sensor 105 is immersed in the drain water, and when used for a long time, water stains, tobacco residue, hair, etc.
The problem is that the water adheres to the water level detection sensor 105, making it impossible to accurately detect the water level, and as described above, the drain water overflows and stains the ceiling, walls, and things in the closet in the living room. It had a point.

In view of the above-mentioned problems, the present invention provides comfortable air conditioning without staining the ceiling, walls, or objects in a closet with drain water.

Means for Solving the Problems In order to solve the above problems, the drain pump control device for an air conditioner according to the present invention sets the operation cycle of the drain pump to ON/OFF using a timer when the compressor is operating, and uses a timer to detect the water level. It is equipped with a control that stops cooling and dehumidifying operations when the sensor is turned on.

Effect The present invention has the above-described configuration, and the operation cycle of the drain pump is set to ON/FF by a timer when the compressor is operating.
If the drain pump is broken or the drain hose is clogged and the drain water cannot be drained, the water level in the water tray will rise and the water level detection sensor will turn on.
By installing a control that stops the operation of the air conditioner, the drain water is adjusted to the correct size before overflowing the water tray, thereby providing comfortable air without polluting the ceiling, walls, and objects in the closet. A harmonizer can be used.

Embodiment Hereinafter, drain pump control for an air conditioner according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a part of an air conditioner of a drain pump control device for an air conditioner according to the present invention.

In Fig. 1, 1rI''i heat exchanger, 2 a water tray, 3
is a drain pump, 4 is a drain hose, 5 is a control device, 6
is a water level detection sensor.

Figure 2 is a sequence diagram in which the power supply is connected to the series circuit of the drain pump motor 7, the contact 11 of the relay 12, the water level detection sensor contact 10, and the operation switch 9, and the timer is connected in parallel to the drain pump motor 7. 8 are connected. Also, the contact point 1 of the drain pump motor 7 and the relay 12
The contact point 15 of the relay 12 which is connected in series with the compressor 13 and the timer 14 is connected in parallel to the one series circuit. A series circuit of the 12 relays, the contact 17 of the timer 14, and the contact 17 of the timer 8 is connected in parallel to the compressor 13.

Contacts 11 and 16 are b contacts.

FIG. 3 is a timing chart.

The operation of the air conditioner drain pump control device configured as described above will be described below with reference to FIGS. 1 to 3.

When the operation switch 9 and the water level detection sensor contact 1o are in the ON state, voltage is applied to the timer 8, drain pump motor 7, and compressor 13, and the drain water condensed in the heat exchanger 1 is discharged by the drain pump 3. Ru. After T1 time, the contacts of the timer 8 are closed and the voltage is applied to the relay 10, the contact 11 of the relay 10 is opened, the voltage is no longer applied to the drain pump motor 7, the drain pump 3 is stopped, and the discharge of drain water is also stopped. . At this time, at the same time, contact 15 of relay 10
is closed and the timer 14 is energized. After 12 hours, the contact 16 of the timer 14 opens, the power to the relay 10 is stopped, the contact 11 of the relay 10 closes, the drain pump motor 7 and the timer 8 are energized, and the drain pump 3 starts operating again. . In this way, the drain pump 3 repeats a periodic operation in which it operates for T1 hours and stops for 12 hours.

Since the water level detection sensor 6 is installed in a position where it will not be immersed in drain water even when the drain water is at its highest level in the water tray 2 during the last 12 hours, water stains and cigarettes will be removed even if it is used for a long time. The water level detection sensor can accurately detect the water level due to dirt or hair, and there is no possibility of water leaking due to overflow of drain water and staining the ceiling, walls, and items in the closet. .

In the event that the drain pump 3 is broken or the drain hose 4 is clogged and it becomes impossible to drain the drain water, the water level detection sensor 6 detects the water before it overflows from the water tray 2. As shown in the timing chart of Fig. 3, the water level rises, the water level detection sensor 6 detects an overflow ffQ, and the water level detection sensor contact 10 becomes ○FF.
Then, the compressor 13 is stopped and the rise in water level is suppressed, so that the drain water does not overflow from the water tray 2.

Therefore, comfortable air conditioning can be achieved without contaminating the ceiling, walls, and objects in the closet in the living room.

In addition, in the timing chart shown in Figure 3, the abnormality display LED turns on at the same time as the water level detection sensor contact turns FF, so it is immediately known that there is an abnormality around the drain water, and service can be quickly taken. It has various effects.

Effects of Development 1 As described above, the present invention provides a water tray 2 for storing drain water generated by condensation in the heat exchanger 1, a drain pump 3 for discharging this drain water, and furthermore, the water tray 2. A water level detection sensor 6 is installed at 11f1 when the drain water exceeds 70-, and the drain pump 3 is ON/OFF controlled by a timer 8.14.
By providing a control that stops the operation of the air conditioner when the water level is detected, the drain water will not overflow the water tray 2, and therefore will not stain the ceiling, walls, and things in the closet in the living room. It provides comfortable air conditioning.

1...Heat exchanger, 2...Water tray, 3.
...Drain pump, 6..Water level detection sensor, 8.14..Timer.

/-111 square five 2-m-water tray 3-m-drain pump Figure 1 Figure 2 J, /4---Fimmer Figure 3 Figure 4 OZ

Claims (1)

[Claims] A water tray for storing drain water generated by condensation in a heat exchanger, a drain pump for discharging this drain water, and a water level detection sensor for detecting before the drain water overflows from the water tray. . A drain pump control device for an air conditioner, wherein the drain pump is ON/OFF controlled by a timer, and when a water level detection sensor detects a water level, the operation of the air conditioner is stopped.