KR940007188B1 - Method of controlling air conditioner automatically - Google Patents

Abstract

The method for automatically operating an air conditioner comprises the steps of: resetting a reference temperature difference value when a room temperature is higher than a setting temperature and an automatic operation is not selected, operating a compressor and operating an air amount and air direction to a setting state; storing the room temperature in a first register when the automatic operation is selected, operating the compressor and driving a timer; storing the room temperature in a second register when a count time is a prescribed time; storing the reference temperature difference value in a third register; storing a calculating temperature difference value between the room temperatures stored in the first and second registers; and operating the air amount and the air direction according to a comparison result of the reference temperature difference value and the calculating temperature difference value, thereby maintaining the room temperature at an agreeable state.

Description

Automatic operation of air conditioner

1 is an air conditioner automatic operation circuit diagram of the present invention.

2 is a flowchart of a method for automatically operating an air conditioner according to the present invention.

* Explanation of symbols for the main parts of the drawings

1 power unit 2 display unit

3: microprocessor 4: relay driver

5: relay unit 6: temperature sensing unit

AS: Automatic Switch

The present invention relates to a method of operating an air conditioner (Air Conditioner), and more particularly, to an automatic operation method of an air conditioner to maintain a comfortable indoor environment by automatically adjusting the wind direction and the amount of air by detecting the fall width of the room temperature.

In a conventional air conditioner (hereinafter, referred to as an aircon), a user arbitrarily selects and adjusts the speed of the blowing fan according to the room temperature by selecting one of the selection switches of the high, medium, and low stages. Therefore, it operates continuously according to the wind direction and wind speed that has been selected once, so it operates continuously regardless of the indoor environment, causing unnecessary power waste and cooling bottle, and when the user wants to change the speed of the indoor blower fan, There was a problem of having to reselect one of the strong / medium / weak selection switches.

In view of the above-described problems, the present invention is to create an automatic operation method of an air conditioner that detects the indoor temperature and automatically adjusts the air volume and the wind direction according to the detected indoor temperature to maintain a comfortable indoor environment. This will be described in detail with reference to the accompanying drawings.

FIG. 1A is a circuit diagram of an air conditioner automatic operation of the present invention. As shown therein, a power supply unit 1 for supplying power to each unit, a microprocessor 3 for controlling the overall operation of the air conditioner system, and A display unit 2 which displays an operation state under the control of the microprocessor 3, an indoor temperature sensor 6 which senses an indoor temperature by a demister and applies it to the microprocessor 3, and the micro The relay driver 4 receives the relay drive signal of the processor 6 and drives the relay, and the relay driver 5 driven by the relay driver 4.

Fig. 1 (b) is a driving circuit diagram showing the connection state of each relay (RY1-RY5) of the relay unit 5 shown in Fig. 1 (a). a1) is connected to the strong selection terminal C1 of the fan motor FM, and the terminal b1 is connected to the middle selection relay RY2, and the terminal A2 of the selection relay RY2 is connected to the fan motor. The terminal b2 is connected to the weak selection relay RY3, the terminal a2 of the weak selection relay RY3 is connected to the weak selection terminal a2 of the FM, and the fan motor FM is weakly selected. It is connected to the terminal c3, and it is comprised by connecting the wind direction drive relay RY4 and the compressor drive relay RY5 to the wind direction motor BM and the compressor motor CM, respectively. In the description of the drawings, reference numeral AS denotes an automatic selection key.

2 is a flow chart of an air conditioner automatic operation method according to the present invention. Referring to FIG. 2, the operation and effect of the present invention will be described in detail as follows.

When the operation start key signal is input to the microprocessor 3, a relay drive signal is output to the relay drive unit 4 in accordance with the key signal set by the microprocessor 3, and the relay unit 5 receives an example (RY1-RY5). Operation is started. That is, when the strong selection signal is set, the switch is shorted to the terminal al by driving the strong selection relay RY1 through the relay driver 4 to the microprocessor 3 so that the fan motor FM operates at high speed. In this case, the microprocessor 3 drives the wind direction driving case RY4 of the relay unit 5 through the relay driving unit 4 and the light compressor driving case RY5 of the relay unit 5 through the relay driving unit 4. ) Is driven to lower the room temperature.

At this time, the room temperature is detected by the room temperature sensor 6 and input to the microprocessor 3. Therefore, the microprocessor 3 stops the operation when the room temperature detected by the room temperature sensing unit 6 is lower than the set temperature, and is in the standby state. On the other hand, when the room temperature is higher than the set temperature, the operation is continued.

In addition, when the automatic selection key (AS) signal is input while the room temperature is higher than the set temperature as described above, the microprocessor 3 determines the current room temperature value TH1 detected by the room temperature detection unit 6. It is stored in the internal first register A, and the compressor drive relay RY5 is driven as described above to drive the compressor motor CM. Then, the timer is driven to count the time, and the count time of the timer is predetermined. The state is maintained until time T1. Thereafter, when the count time of the timer reaches the predetermined time T1, the current room temperature value TH2 sensed by the room temperature sensing unit 6 is stored in its internal second register B, and then the third register ( It is determined whether or not the reference temperature difference value TH3 is stored in C), and in this case, if it is not stored, the room temperature values TH1 and TH2 stored in the first, second registers A and B are stored. The difference AB is obtained from the difference, and the difference is stored in the third register C as the reference temperature difference value TH3. As a result, the reference temperature difference value TH3 stored in the third register C becomes a reference value of the descending tree in which the room temperature decreases for a predetermined time T1. Thereafter, the timer is reset, and the process is repeated after resetting the measured temperature difference value of the fourth register D described later.

On the other hand, if it is stored in the step of determining whether the reference temperature difference value (TH3) is stored in the third register (C), the room temperature value (1) in the first, second registers (A), (B) as described above The difference AB is obtained from TH1) and TH2, and the difference is stored in the fourth register D as the measured temperature difference value TH3 ', and then the storage source reference temperature difference value TH3 is the measured temperature. It is determined whether it is larger than the difference value TH3 '. At this time, if the reference temperature difference value TH3 is greater than the measured temperature difference value TH3 ', the fall of the room temperature is later than the initial stage of obtaining the reference temperature difference value TH3. Therefore, the fan motor is driven by driving the strong selection relay RY1. (FM) is driven at high speed, and thus, the indoor temperature drop is corrected at this time, so that the indoor temperature is rapidly spread to the set temperature, thereby maintaining the indoor temperature in a comfortable state.

On the other hand, if the reference temperature difference value TH3 is smaller than the measured temperature difference value TH3 ', an obstacle is present in the cold air flow path discharged to the room, and thus the cold air flows directly from the outlet to the entrance side. By driving RY5 to drive the wind direction motor BM, cold air is normally discharged to the room to maintain the room temperature in a comfortable state.

After driving the fan motor FM or the wind direction motor BM as described above, the timer is reset and the measured temperature difference value TH3 'of the fourth register D is reset. Repeat the above process.

As described in detail above, the present invention senses a room temperature fall width in a predetermined time unit and automatically adjusts the air volume and the wind direction depending on whether the room temperature fall width is greater than or less than the reference room temperature fall width. According to the set temperature has the effect of maintaining a comfortable state.

Claims (1)

Resetting the reference temperature difference value of the third register when the room temperature is higher than the set temperature and the automatic operation is not selected, and operating the compressor in the set state together with the operating term of the compressor; When the selection is made, storing the current room temperature value in the first register, operating the compressor, driving a timer, and storing the current room temperature value in the second register when the count time of the timer reaches a predetermined time. And after the reference temperature difference value is not stored in the third register, obtaining a difference between the room temperature values stored in the first and second registers and storing the difference in the reference temperature value in the third register. If the reference temperature difference value is stored in the third register, the difference between the room temperature values stored in the first and second registers is obtained, and the measured temperature is measured in the fourth register. Storing the difference as a difference value, and then comparing the reference temperature difference value stored in the third register to a value greater than the measured temperature difference value stored in the fourth register to drive the air volume in a large amount and to drive a wind direction in a small amount. And after the step of storing the reference temperature difference value in the third register, the timer is reset, the measured temperature difference value of the fourth register is reset, and the step is repeated. Automatic operation method of the air conditioner characterized by.