KR100516636B1 - Method and system for controlling refrigerator driving - Google Patents

Abstract

The refrigerator operation control system according to the present invention changes the compressor driving on or off reference temperature value set in the central control unit according to the refrigerator external temperature and controls the compressor on or off according to the changed temperature value. An external temperature sensor for sensing a temperature value, and a central control unit for increasing or decreasing the temperature value at which the compressor is driven on or off according to the room temperature value detected by the external temperature sensor.

As described above, according to the present invention, the compressor is controlled by changing the temperature value at which the compressor is driven on or off according to the external temperature, thereby maintaining an optimal refrigeration state in which the temperature in the refrigerator does not change according to the external temperature.

Description

Refrigerator operation control system and method {METHOD AND SYSTEM FOR CONTROLLING REFRIGERATOR DRIVING}

The present invention relates to a method of operating a refrigerator, and more particularly, to a refrigerator operation control system and method in which a temperature inside a refrigerator does not change with a change in an external temperature of the refrigerator.

Generally, a refrigerator is a household appliance used to freeze and refrigerate food using a cooling cycle, and exchanges refrigerant gas, which has been compressed at a high temperature and high pressure in a compressor, with an outside air in a condenser. After filtration in a receiver dryer, and adiabatic expansion with low-temperature, low-pressure liquid refrigerant through a capillary tube (Capillary Tube).

In particular, a fan-cooling refrigerator exchanges heat with cavity air in a cabinet circulated by a fan in an evaporator to freeze and refrigerate food stored by evaporative heat of refrigerant absorbed. Temperature control is performed as the drive / stop control of the fan and the compressor.

On the other hand, among such fan-cooling refrigerators, in which condensation of cold air around the evaporator is forced by condensation by a fan, the refrigerator having a temperature control centered on the refrigerator temperature has one fan in the freezer compartment. A fan that discharges cold air around the detected temperature and a compressor that converts low-pressure low-temperature refrigerant gas into high-pressure high-temperature refrigerant gas in order to liquefy the refrigerant in a gaseous state, and controls the cold air around the evaporator in the freezer compartment and the refrigerator compartment. The temperature of the refrigerator is maintained at an appropriate temperature.

These fans and compressors are turned on or off by a temperature sensor that senses the temperature in the refrigerator. In other words, the temperature sensor controls the fan and the compressor to be driven on and off when the temperature in the refrigerator is higher than or equal to the predetermined upper limit temperature, and controls the fan and the compressor to be turned off when the temperature in the detected refrigerator is lower than or equal to the preset lower limit temperature. And control the temperature of the freezer compartment.

However, since the temperature value set by the temperature sensor to control the fan and the compressor on or off is preset regardless of the change in the ambient temperature of the place where the refrigerator is located, the temperature in the refrigerator increases or decreases according to the external temperature. There is this. In other words, there is a problem in that the temperature in the refrigerator is increased due to the change in the external temperature, so that the refrigerating compartment is weakly cooled or the temperature in the refrigerator is lowered, so that the refrigerating compartment is overcooled.

An object of the present invention is to solve the problems of the prior art, and increases and decreases the compressor and refrigeration fan driving on or off reference temperature value set in the central control unit according to the refrigerator external temperature, and using the increased or decreased reference temperature value It is to provide a refrigerator operation control system and method that can improve the refrigeration efficiency by maintaining a constant temperature in the refrigerator by controlling the on or off.

In order to achieve the above object, the present invention provides a driving control system of a refrigerator in which a compressor is driven on or off temperature value is set, an external temperature sensor for sensing an indoor temperature value outside the refrigerator during operation of the refrigerator; When the room temperature value detected by the external temperature sensor is 15 ° C. or less, the temperature value of turning on or off the compressor is increased by 1 ° C., and when the room temperature value is 15 ° C. or more and 25 ° C. or less, the compressor is turned on. Or 0.5 ° C increase to the temperature value to be turned off, and the temperature value at which the compressor is turned on or off is decreased by 0.5 ° C when the room temperature value exceeds 25 ° C and 43 ° C or less, and the room temperature value exceeds 43 ° C. And a central control unit for further reducing the temperature value at which the compressor is turned on or off by 1.0 ° C.

According to another aspect of the present invention, there is provided a method of controlling a refrigerator in which a temperature value at which a compressor is driven on or off is set, the method comprising: detecting an indoor temperature value outside the refrigerator while the refrigerator is operating in an operation mode; In the case where the detected room temperature value is 15 ° C. or less, the temperature value at which the compressor is turned on or off is increased by 1 ° C., and when the room temperature value is more than 15 ° C. and less than 25 ° C., the temperature value at which the compressor is turned on or off Increase the temperature by 0.5 ° C., decrease the temperature at which the compressor is turned on or off by less than 0.5 ° C. when the room temperature value is above 25 ° C. and below 43 ° C., and when the room temperature value is above 43 ° C., turn on the compressor. Or further decreasing the temperature value which is turned off by 1.0 ° C.

There may be a plurality of embodiments of the present invention, and a preferred embodiment will be described in detail below with reference to the accompanying drawings. Those skilled in the art will be able to better understand the objects, features and advantages of the present invention through this embodiment.

1 is a block diagram illustrating a refrigerator operation control method according to the present invention. Referring to FIG. 1, the refrigerator to which the control method of the present invention is applied includes a refrigerating and freezing sensor 100, an external temperature sensor 101, a central control unit 102, a motor driving unit 103, and a compressor 104.

The freezing and refrigerating sensor 100 is installed in the refrigerating compartment and the freezing compartment to detect the internal temperature of the refrigerating compartment and the freezing compartment, and the A / D (Analog to Digital) port of the central control unit 102 to describe the detected freezer and refrigerating compartment temperature detection signals. Is applied.

The external temperature sensor 101 detects the internal temperature of the room where the refrigerator is installed, and applies the detected temperature detection signal outside the refrigerator to the A / D port of the central control unit 102 described later.

The central control unit 102 increases or decreases the temperature value of the compressor 104 on or off according to the temperature value detected by the external temperature sensor 101, and increases or decreases the temperature value detected by the freezing and refrigerating sensor 100 and the external temperature. The temperature value changed accordingly is compared and the control signal for driving the compressor 104 is transmitted to the motor driver 103. The motor driver 103 drives the compressor 104 on or off according to the control signal received from the central controller 102.

In addition, when the refrigerator is changed to the defrost mode during the operation mode, the central control unit 102 increases the temperature value at which the compressor 104 is turned on or off by a predetermined amount, and turns on the compressor 104 according to the increased temperature value. Control on or off.

In other words, in the defrost mode, the central control unit 120 increases the on or off temperature value of the preset compressor 104 by 1 ° C. and drives the compressor 104 on or off according to the increased temperature value. The same compressor 104 drive on or off operation automatically changes the defrost mode to the run mode after repeating two cycles.

An operation process of the operation control system of the refrigerator having the structure as described above will be described with reference to FIG. 2. 2 is a flowchart illustrating an operation control method of a refrigerator according to the present invention.

Referring to FIG. 2, in the operation control method of the refrigerator according to the present invention, when the power plug of the refrigerator is not connected to a power outlet, the refrigerator operates normally (S200).

At this time, the central control unit 102 has a reference temperature value at which the refrigerating fan 105 and the compressor 104 are driven on and off.

During normal operation, the central control unit 102 receives an external temperature value from the external temperature sensor 101, and determines whether the received external temperature value is 15 ° C. or less (S202).

As a result of the determination in step S202, when the external temperature value is 15 ° C or less, the central control unit 102 advances to step S216 after raising the reference temperature value at which the compressor 104 is turned on or off by 1 ° C (S204).

As a result of the determination in step S202, when the external temperature value exceeds 15 ° C, the central control unit 102 determines whether the external temperature value exceeds 15 ° C or less than 25 ° C (S206).

As a result of the determination in step S206, when the external temperature value exceeds 15 ° C and below 25 ° C, the central control unit 102 advances to step S216 after raising the reference temperature value at which the compressor 104 is turned on or off by 0.5 ° C ( S208), otherwise, it is determined whether the external temperature value exceeds 25 ° C and less than 43 ° C (S210).

As a result of the determination in step S210, when the external temperature value exceeds 25 ° C and below 43 ° C, the central control unit 102 decreases the temperature value at which the compressor 104 is turned on or off by 0.5 ° C and then proceeds to step S216 (S221). Otherwise, the compressor 104 decreases the temperature value at which the compressor 104 is turned on or off by 1 ° C., and then determines whether the current mode is the defrost mode (S214, S216).

As a result of the determination in step S216, in the case of not in the defrost mode, the central control unit 102 returns to step S202 to increase or decrease the temperature value at which the compressor 104 is driven on or off in accordance with the external temperature value.

As a result of the determination in step S216, in the defrost mode, the central control unit 102 further decreases the temperature value at which the compressor 104 is turned on or off (that is, the temperature value decreased by 1 ° C. in step S214) by 1 ° C., and decreases. The compressor 104 is controlled on or off in accordance with the temperature value (S218).

Thereafter, the central control unit 102 determines whether the compressor 104 is driven on or off for two cycles in the defrost mode (S220), and as a result of the determination of step S220, the compressor 104 is driven on or off for two cycles. If so, the flow returns to step S202 to increase or decrease the temperature at which the compressor 104 is driven on or off in accordance with the external temperature.

As a result of the determination in step S220, when the compressor 104 has not been driven on or off for two cycles, the process returns to step S218 to further reduce the drive on or off temperature value of the current compressor 104 by 1 DEG C, and to the reduced temperature value. Accordingly, the compressor 104 is driven on or off.

As described above, the present invention can maintain the optimal refrigeration state in which the temperature in the refrigerator does not change according to the external temperature by controlling the compressor by changing the temperature value at which the compressor is driven on or off according to the external temperature.

1 is a block diagram showing a refrigerator operation control system according to the present invention,

2 is a flowchart illustrating a control process of a refrigerator operation control system according to the present invention.

<Description of the code | symbol about the principal part of drawing>

100: refrigeration and refrigeration sensor 101: external temperature sensor

102: central control unit 103: motor drive unit

104: compressor

Claims (6)

delete In the operation control system of a refrigerator in which a temperature value at which a compressor is driven on or off is set, An external temperature sensor configured to detect an indoor temperature value outside the refrigerator during operation of the refrigerator; When the room temperature value sensed by the external temperature sensor is 15 ° C. or less, the on or off temperature value of the compressor is increased by 1 ° C., and when the room temperature value is 15 ° C. or more and 25 ° C. or less, the compressor is turned on or off. When the temperature rises by 0.5 ° C., when the room temperature exceeds 25 ° C. and below 43 ° C., the temperature at which the compressor is turned on or off is decreased by 0.5 ° C., and when the room temperature exceeds 43 ° C. Central control unit for further reducing the temperature value at which the compressor is turned on or off 1.0 ℃ Refrigerator driving control system comprising a. The method of claim 2, The central control unit, When the change from the operation mode of the refrigerator to the defrost mode, the temperature value of the on or off of the compressor is reduced by 1 ℃, the refrigerator when the on or off operation of the compressor is changed to the operation mode after two cycles Driving control system. delete In the operation control method of the refrigerator in which the temperature value at which the compressor is driven on or off is set, Detecting an indoor temperature value outside the refrigerator while the refrigerator is operating in an operation mode; When the room temperature value sensed by the external temperature sensor is 15 ° C. or less, the on or off temperature value of the compressor is increased by 1 ° C., and when the room temperature value is 15 ° C. or more and 25 ° C. or less, the compressor is turned on or off. When the temperature rises by 0.5 ° C., when the room temperature exceeds 25 ° C. and below 43 ° C., the temperature at which the compressor is turned on or off is decreased by 0.5 ° C., and when the room temperature exceeds 43 ° C. Further decreasing the temperature at which the compressor is turned on or off by 1.0 ° C. Refrigerator driving control method comprising a. The method of claim 5, The refrigerator operation control method, When the change from the operation mode of the refrigerator to the defrost mode, the temperature value of the on or off of the compressor is reduced by 1 ℃, the refrigerator when the on or off operation of the compressor is changed to the operation mode after two cycles Driving control method.