JPH04158150A - Drain pump controller of air conditioner - Google Patents

Abstract

PURPOSE:To change operation intervals and to secure the life time of a drain pump by a method wherein a plurality of areas in which temperature and humidity are parameters are set in a storage part in a microcomputer and an area determination is made at prescribed intervals based on data of a temperature detecting means and a humidity detecting means. CONSTITUTION:Along with start of cooling operation, temperature data of a room temperature sensor 1 and humidity data of a humidity sensor 2 are read in and it is determined in which area present temperature and humidity are comparing with temperature and humidity areas stored in storage part in a microcomputer 3. If B area is determined, for example, an operation mode of a drain pump 5 is determined to be that of two-minute operation and one- minute stop (operation factor is 67%) and then an electric signal is outputted from an output part of the microcomputer 3 for an operation and stop control of the drain pump 5 through a relay. As room temperature and humidity changes along with the operation of an air conditioner, the room temperature and humidity are read in at prescribed intervals by a time counting part in the microcomputer 3 to determine an optimum operation mode.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention (L) relates to the operation control of a drain pump of an air conditioner equipped with a drain pump (a)Prior art As a conventional drain pump operation control device for an air conditioner ζ
As shown in Figure 6 (Japanese Unexamined Patent Publication No. 63-204056), during GQ cooling operation, compressor operation (thermo 0N).
i;! , Carry out periodic operation with the drain pump ON for T1 and FF for T2. Stop the compressor (thermo 0FF).
+ LTa time fA Problems that inventions are trying to solve even if they are operated only once Recently, Party Ho 7L (wedding trench
Training rooms and offices with increased office automation and computers and other heat-generating devices have become required to operate air conditioners throughout the year. Therefore, it is also necessary to operate the drain pumps that discharge drain water generated during air conditioner operations throughout the year. Even if it is necessary to extend the life of the drain pump, the conventional operation control of the drain pump will ensure that the operation cycle (ON-OFF time) is constant (C). It is necessary to determine the operating cycle to prevent overflow from the drain pan, and as a result, the operating time (operating rate) of the drain pump per unit time becomes extremely large, and the life span of the drain pump is short for year-round cooling operation. In view of the above problems, the present invention distinguishes between times when a lot of drain water is generated and times when there is little, and operates the drain pump. The purpose of this invention is to ensure the lifespan of a drain pump that can be used for cooling operations throughout the year by changing the cycle. A water receiver for storing drain water generated by condensation in the indoor heat exchanger includes a dish, a drain pump for discharging the drain water, a temperature detecting means for detecting room temperature, a humidity detecting means for detecting humidity, and the above-mentioned. A microcomputer is installed to control the operation of the air conditioner (large).During cooling operation, a timer within the microcomputer reads temperature data from the temperature detection means and humidity data from the humidity detection means at regular intervals.
The area is determined by comparing the setting area that is pre-assigned in the memory section of the microcomputer with temperature and humidity as parameters.\ A time mode signal corresponding to the setting area is output from the pressure section and the operation mode of the drain pump (operation, This device is equipped with a drain pump operation control device that varies the stop time).
We focused on the fact that the amount of dehumidification from an air conditioner can be calculated fairly accurately based on room temperature and humidity. (Temperature and humidity determine the absolute humidity in the air.) The microcomputer's memory has multiple areas with temperature and humidity as parameters. set
The area is determined at regular intervals based on the data of the temperature detection means and the humidity detection means (X), and the operation signal corresponding to the area is output from the output section, and the operation cycle of the drain pump (○N-0) is determined.
For example, when the room temperature and humidity are high in midsummer (there is a large amount of drain water), the ON time of the drain pump is long and the OFF time is short, and the operation rate of the drain pump can be greatly adjusted to the middle. Example of Shortening the ON Time and Longing the OFF Time (Extremely Low Room Temperature and Humidity (Very Small Volume of Drain Water) During Seasons, Winter, etc.) Hereinafter, an example of the present invention will be explained.
A block diagram of an embodiment of the present invention is shown, and 1 is a humidity detection means.
2 is a humidity detection means; 3 is a microcomputer with a built-in time measurement means, storage means, and output means; 4 is a relay; and 5 is a drain pump. FIG. 2 is an air conditioner showing an embodiment of the present invention. In the cross-sectional view of the indoor unit, 6 is the actual indoor unit, 7 is the indoor heat exchanger, 8 is the water receiver that receives the drain water, 9 is the air blower a, 10 is the control device with a built-in microcomputer 3, and 1 is the temperature detection means. 2 is a humidity sensor corresponding to the humidity detecting means; 5 is a drain pump that pumps up and drains drain water.The operation of the above configuration will be explained with reference to the flow chart in FIG. 3. With the start of operation (
Step 101) The temperature data of the room temperature sensor 1 and the humidity data of the humidity sensor 2 are read (Step 102), and it is determined in which region it is currently located in comparison with the temperature and humidity regions stored in the memory section of the microcomputer 3. A judgment is made (step 103). FIG. 4 shows an example of area classification of temperature and humidity. High temperature/high humidity area is A area, below B-
Figure 5 is a time chart showing an example of the operation mode of the drain pump corresponding to the above regions. When it is determined, the operation mode of the drain pump 5 is determined to be 2 minutes operation and 1 minute stop (operation rate 67%), and an electric signal is output from the output section of the microcomputer 3, and the drain pump 3 is controlled to operate or stop via the relay. Since the room temperature and humidity change with the operation of the air conditioner, the timer in the microcomputer 3 reads the room temperature and humidity at regular intervals and determines the optimum operating mode (step 104). The drain pump is then operated according to the determined operation mode (steps 105, 106).

Therefore, it is possible to operate the drain pump in accordance with the drain water generation status of the air conditioner, and when the amount of drain water generated in the winter and intermediate seasons is small, it is possible to set the operation rate of the drain pump to a small value, and the drain pump operation rate can be set to a low value. The lifespan can be greatly extended to the same level as the lifespan of the air conditioner itself.Advantages of the InventionAs is clear from the above embodiments, the present invention is capable of reducing condensation in the indoor heat exchanger of the air conditioner. A water receiver for storing generated drain water includes a dish, a drain pump for discharging the drain water,
A temperature detecting means for detecting room temperature, a humidity detecting means for detecting humidity, and a microcomputer for controlling the operation of the air conditioner are installed, and the temperature is detected at regular intervals by a clock means in the microcomputer during cooling operation. A section reads temperature data from the means and humidity data from the humidity sensor, determines a setting area pre-allocated in a storage section in the microcomputer using temperature and humidity as parameters, and outputs a time mode signal corresponding to the setting area. By increasing the output power and varying the operation mode of the drain pump, it is possible to significantly extend the life of the drain pump and realize cooling operation throughout the year.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a drain pump control device for an air conditioner showing an embodiment of the present invention. Fig. 2 is a cross-sectional diagram of an indoor unit of the air conditioner. Fig. 3 is a diagram showing the operation of the drain pump control device. Flowchart, Fig. 4 is an explanatory diagram showing the area classification based on temperature and humidity stored in the storage section in the microcomputer of the control device. Fig. 5 is an operation time chart of the drain pump according to the same area classification, and Fig. 6 is the conventional one. In the time chart of the drain pump control device...
... Temperature detection means 2 ... Humidity detection means 3 ...
・Micro computer 5...Drain pump 5-
Doshin pump irises l Figure 3

Claims (1)

[Claims] A water tray for storing drain water generated by condensation in an indoor heat exchanger of an air conditioner, a drain pump for discharging the drain water, a temperature detecting means for detecting room temperature, and a humidity detecting means for detecting humidity. and a microcomputer for controlling the operation of the air conditioner, and during cooling operation, a timer in the microcomputer reads temperature data from the temperature detection means and humidity data from the humidity detection means at regular intervals, An air conditioner that determines a setting area that is assigned in advance using temperature and humidity as parameters in the memory section of a microcomputer, and outputs a time mode signal corresponding to the setting area from the output section to vary the operation mode of the drain pump. Drain pump control device.