KR100303679B1 - Method for controlling sleep mode operation of air conditioner - Google Patents

Abstract

PURPOSE: A control method of sleep mode operation for an air conditioner is provided to operate the pleasant sleep mode by deciding cooling or heating of operation every four hours in the sleep mode and newly beginning the sleep operation in changing operation mode. CONSTITUTION: A key input signal according to cooling or heating operation mode is detected in an air conditioner divided into an indoor unit and an outdoor unit(S1). The air conditioner is operated with increasing to the desired temperature after the predetermined time in setting cooling operation mode from the key input signal(S2-S3), and with decreasing to the desired temperature in setting heating operation mode from the key input signal(S5-S6). The sleep mode is operated according to cooling or heating operation, and sleep operation is performed according to cooling or heating operation with deciding operation mode again after the elapsed time.

Description

How to control bedtime operation of air conditioner

The present invention relates to a sleep operation control method for an inverter air conditioner capable of varying an operating frequency.

Inverter air conditioner rectifies AC voltage, converts it into DC voltage, and then converts it into AC again to change the operating frequency according to the cooling load condition. For example, when applied to a compressor, the cooling capacity is controlled by varying the number of rotations by controlling the operating frequency. In addition, it is possible to save power consumption cooling operation of low power consumption.

In this way, the inverter air conditioner can change the operating frequency according to the load, so that the indoor temperature can be increased within a short time (when heating) or the indoor temperature can be lowered within a short time (when cooling) to shorten the time to reach the set temperature band. Since there is almost no load stop, it is possible to precisely maintain the change in room temperature at the minimum temperature band, and since the speed is gradually changed at high speed after starting at the lowest operating frequency, the starting current is lower than the operating current, so that it is not applied to other electrical products. There is no impact and less power loss than standard air conditioners.

In such an inverter air conditioner, the conventional bedtime operation control method is to increase the desired temperature by 1 ° C. after 1 hour at the start of bedtime when the bedtime operation is performed in the automatic operation as shown in FIG. Because the control to lower the temperature to 3 ° C. and lower the temperature to 4 ° C. after 3 hours is performed only once after the start of bedtime, there is a difficulty in controlling proper sleep according to the change of the room temperature.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to provide a method for controlling an inverter air conditioner bedtime operation, which enables sleep control according to a room temperature situation by setting a cycle according to the bedtime operation repeatedly. .

In order to achieve the above object, the present invention continuously controls the temperature according to the bedtime operation when the previous mode and the current mode are the same when setting the bedtime, and if every other time, performs the bedtime operation again according to the newly determined cooling and heating. Operation Mode It is possible to distinguish between heating and cooling.

According to this method, more comfortable sleeping conditions can be provided by performing bedtime control according to the room temperature situation every 4 hours when setting the bedtime in the automatic operation.

1 is a block diagram showing an electrical connection configuration of the inverter air conditioner according to the present invention, Figure 2 is a flow chart for explaining a bedtime driving control method according to the present invention,

3 is a flowchart illustrating a conventional bedtime driving control method.

* Description of the symbols for the main parts of the drawings *

10; Indoor 11; Indoor temperature sensor

12; indoor fan motor 13; indoor microcomputer

14; key input unit 20; outdoor unit

21; outdoor temperature sensor 22; outdoor fan motor

27; compressor

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block circuit diagram showing an electrical connection configuration of an inverter air conditioner for realizing the present invention, which is divided into an indoor unit 10 installed indoors and an outdoor unit 20 installed outdoors.

The indoor unit 10 includes an indoor temperature sensor 11 for detecting an indoor temperature, an indoor fan motor 12 for blowing indoor air of a low temperature heat exchanged by an indoor heat exchanger, an indoor fan motor control, a temperature calculation and a timer. The indoor microcomputer 13 for outputting a control signal for controlling a load according to a set program having a function, etc., a key input unit 14 for selecting an operation mode of the indoor unit, and a display unit for displaying the input key signal state ( 15) configured.

The outdoor unit 20 includes an outdoor temperature sensor 21 for sensing an outdoor temperature, an outdoor fan motor 22 for cooling an outdoor heat exchanger to increase heat exchange efficiency, and an inverter output frequency by a control signal of the indoor microcomputer 13. The A / D converter 25 is driven by the outdoor microcomputer 23 for controlling the control unit, the TR driver 24 for driving the compressor according to the control signal of the outdoor microcomputer 23, and the TR driver 24. By converting the direct-current power source AC is converted into AC again through the inverter unit 26 for driving the compressor, and by the AC power applied from the inverter unit 26 forcibly compress the refrigerant of the cooling cycle And a direct current peak detector 28 and an overcurrent detector 29 for detecting a voltage and a current which change in response to an increase in overload, thereby controlling the system according to a predetermined program. Will be done.

In the embodiment of the present invention has been described an electrical connection configuration for the inverter air conditioner, the bedtime operation control method described below is not only applied to the heat pump type air conditioner but also the inverter air conditioner.

FIG. 2 is a flowchart illustrating a method for controlling sleep operation according to the present invention. The present invention allows the user to perform the operation mode again in consideration of the indoor temperature condition after a predetermined time has elapsed after the start of the sleep operation. When the cooling or heating operation mode is set according to the sleep operation, the indoor microcomputer 13 performs the sleep operation by determining the operation mode S1 according to this and controlling various loads.

If it is determined that the sleep mode set by the user is the cooling mode, the indoor microcomputer 13 performs the cooling operation while maintaining the set temperature according to the sleep mode. After 1 hour, the operating frequency of the compressor 27 And controlling the rotation speed of the indoor / outdoor fan motors 12 and 22 to raise the desired temperature by 1 ° C. (S2-S3).

For example, when starting the bedtime operation, if the room temperature is maintained at 27 ° C, the cooling operation is performed while maintaining the same room temperature for 1 hour. After 1 hour, the desired temperature is increased to 28 ° C by raising the desired temperature by 1 ° C. Carry out the operation.

At this time, the indoor microcomputer 13 controls the outdoor microcomputer 23 so that the operating frequency of the compressor 27 is lowered by 2 Hz at intervals of about 30 seconds when the temperature is raised to a desired temperature so that a sudden temperature change does not occur.

When the set time 4 hours have elapsed while performing such a sleep operation (S4), the indoor microcomputer 13 determines the operation mode again, and if the same as the previous mode, that is, the cooling mode, performs the aforementioned sleep operation based on the current indoor temperature. do.

On the contrary, in step 1, when it is determined that the sleep mode set by the user is the heating mode, the indoor microcomputer 13 performs the heating operation while maintaining the set temperature according to the sleep mode. After 1 hour, the compressor ( By controlling the operating frequency of the 27) and the number of rotations of the indoor and outdoor fan motors 12 and 22, the desired temperature is lowered by 3 ° C (S5-S6).

For example, when starting the bedtime operation, if the room temperature is maintained at 25 ° C, the cooling operation is performed while maintaining the same room temperature for 1 hour, and after 1 hour, the operating frequency of the compressor 27 is controlled and desired. The heating operation is performed at 22 ° C. with a temperature of 3 ° C.

After 3 hours of starting the bedtime operation while performing the heating bedtime operation (S7), the heating temperature is performed while maintaining the desired temperature at 21 ° C (S8) by lowering 1 ° C again from the temperature of 25 ° C at the time of starting the bedtime operation (S8). When 4 hours have elapsed (S4) due to such operation, the indoor microcomputer 13 determines the operation mode again, and if the same as the previous mode, that is, the heating mode, repeats the routine of performing the above-described sleep operation based on the current indoor temperature. By this, more comfortable sleeping conditions can be provided.

As described above, in the sleep mode, the present invention can continuously perform the operation corresponding to the change of the room temperature by re-executing the sleep operation control suitable for the room temperature situation after a certain time while cooling or heating is performed. I can create a comfortable environment.

Claims (1)

An air conditioner divided into an indoor unit and an outdoor unit, comprising: an operation mode determination step of determining a key input signal according to an air conditioning operation mode; A cooling operation step of operating by raising the desired temperature after a predetermined time when the cooling operation mode is set by the key input signal; A heating operation step of operating by lowering to a desired temperature after a predetermined time when the heating operation mode is set by a key input signal; Sleeping operation control method of the air conditioner, characterized in that to perform a routine of repeating the sleep operation according to the cooling and heating operation step to determine the operation mode again when the set time elapses while performing the sleep operation according to the heating and cooling operation .

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