KR0159609B1 - Rapidity cold storage control method of a refrigerator - Google Patents

Abstract

The present invention relates to a rapid refrigeration control method of a refrigerator, and more particularly to a method of controlling the compressor (9), the cold air circulation fan (8) and the damper (4b) in connection with the selection of the quick refrigeration function.

The method of the present invention (a) when the rapid refrigerating function is selected, while maintaining the damper (4b) in the open state until the refrigerator compartment temperature (TR) is lower than the first set temperature (TS1) corresponding to the rapid refrigeration temperature ( 9) and operating the cold air circulation fan (8); (B) closing the damper 4b when the refrigerating chamber temperature TR becomes lower than the first set temperature TS1 in step (a); (C) When the freezer compartment temperature TF becomes above the second preset temperature TS2 corresponding to the freezer preset temperature, the compressor 9 and the cold air circulation fan 8 are operated, and the freezer compartment temperature TF is the second preset temperature ( Stopping the operation of the compressor 9 and the cold air circulation fan 8 when lower than TS2); (D) If the refrigerator compartment temperature TR is equal to or higher than the third set temperature TS3 corresponding to the strong cold set temperature during the process (c), the damper 4b is opened and the refrigerator compartment temperature TR is set to the third set temperature ( If lower than TS3), the process of closing the damper 4b and (e) repeating the process (C) below while the predetermined criteria are not mature and ending the rapid refrigeration function when the criteria are mature.

Description

Rapid Refrigeration Control Method of Refrigerator

1 is a longitudinal sectional view according to an example of a refrigerator to which the method of the present invention is applied.

2 is a cross-sectional view showing an example of a motor damper assembly.

3 is a block diagram of an operation control apparatus of a refrigerator to which the method of the present invention is applied.

4 is a detailed circuit diagram of the operation control apparatus of the refrigerator shown in FIG.

5 is a flowchart showing a method for controlling rapid refrigerating of a refrigerator according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10 microprocessor 20 temperature sensing unit

30: load driving unit 40: damper opening and closing detection unit

50: function setting unit 60: display unit

70: power supply

The present invention relates to a rapid refrigeration control method of a refrigerator, and more particularly, to a method of controlling a compressor, a cold air circulation fan, and a damper driving motor in connection with the selection of a quick refrigeration function.

In general, in a refrigerator having a freezer compartment and a refrigerating compartment, the driving of the compressor and the cold air circulation fan is controlled only depending on the temperature of the freezer compartment. In more detail, when the temperature of the freezer compartment reaches a predetermined set temperature, for example, -18 ° C or higher, the compressor and the circulation fan are operated, and when the temperature of the freezer compartment is lower than -18 ° C, the operation of the compressor and the circulation fan is stopped. On the other hand, the cold air flow path for communicating the cold air generated from the evaporator to the cold storage compartment is disposed in place at the rear of the refrigerating chamber, and the damper assembly for opening and closing the cold air flow path is installed at the place of the cold air flow path. The damper assembly usually consists of a temperature-sensitive tube in which gas is enclosed and a bellows, a damper, a heater and a thermostat connected thereto. In the above configuration, when the temperature of the refrigerating chamber is at a predetermined set temperature, for example, 3 ° C. or more, the thermostat is turned off to cut off the power supplied to the heater, and thus the bellows are contracted to open the damper. On the other hand, when the temperature of the refrigerating compartment is lower than 3 ° C. (to be precise, the refrigerating compartment temperature is kept within a predetermined temperature range), the thermostat is turned on to supply power to the heater in the opposite manner as described above, so that the bellows is developed. Close the damper.

That is, in the conventional refrigerator, the compressor and the circulation fan are controlled only depending on the temperature of the freezer compartment, and conversely, the damper is controlled only by the temperature of the refrigerating compartment. As a result, under the conventional control system, there is a problem in that it is virtually impossible to adopt a so-called rapid refrigeration function that rapidly cools a beverage such as beer or the like without freezing it.

The present invention has been made to solve the above problems, and an object thereof is to provide a control method of a refrigerator capable of realizing a rapid refrigeration function.

The rapid refrigeration control method of the present invention for achieving the above object is a refrigeration cycle consisting of a compressor, a condenser, a capillary tube, an evaporator and a refrigerant pipe connecting them in series, for forcibly circulating the cold air generated in the evaporator in a freezer compartment or a refrigerating compartment. A refrigerator having a fan, a cold air flow path formed between the evaporator and the refrigerating chamber, and a damper capable of arbitrarily opening and closing the cold air flow path, wherein the refrigerator can be selected from the rapid refrigerating function. Operating the compressor and the cold air circulation fan while maintaining the damper in an open state until the temperature becomes lower than the first preset temperature corresponding to the rapid refrigeration temperature; (B) closing the damper when the temperature of the refrigerating compartment is lower than the first preset temperature in step (a); (C) When the temperature of the freezer compartment is higher than the second set temperature corresponding to the freezer set temperature, the compressor and cold air circulation fan are operated. When the temperature of the freezer compartment is lower than the second set temperature, the operation of the compressor and the cold air circulation fan is stopped. and; (D) opening the damper if the temperature of the refrigerating chamber is higher than the third set temperature corresponding to the strong cold set temperature during the process (c), and closing the damper if the temperature of the refrigerating chamber is lower than the third set temperature; The process of repeating the process (C) below while the predetermined criteria are not mature, and terminating the rapid refrigeration function when the criteria are mature. In the process (e), it is preferable to judge whether or not the criterion is mature by a predetermined time. Further, when the temperature of the refrigerating chamber is greater than or equal to the third set temperature in the process (d), the cold air circulation fan is operated and the refrigerating chamber is When the temperature is lower than the third set temperature, the step of stopping the operation of the cold air circulation fan can be further provided to allow the cold air to flow into the refrigerating compartment more rapidly.

Hereinafter, a preferred embodiment of the rapid refrigeration control method of the refrigerator according to the present invention will be described in detail.

1 is a longitudinal sectional view according to an example of a refrigerator to which the method of the present invention is applied. As shown in FIG. 1, the refrigerator includes a freezing compartment 2 and a refrigerating compartment 3 partitioned up and down by the partition wall 1. Each door 5; 6 is rotatably installed in the front surface of the freezing chamber 2 and the refrigerating chamber 3, and the partition walls 2b; 3b in which a plurality of openings 2a; 3a are formed are arranged behind. An evaporator 7 forming a part of the refrigeration cycle is disposed behind the partition 2b of the freezer compartment 2, and a cold air circulation fan 8 is disposed above the evaporator 7 so as to face the opening 2a. . A plurality of shelves 3d are detachably disposed in the refrigerating chamber 3, and a vegetable chamber 3e is usually provided at a lower portion thereof. The partition walls 1 are provided with cool air flow paths 1a and 1b for introducing air from the freezing chamber 2 and the refrigerating chamber 3 into the evaporator 7, and also between the rear wall of the main body and the partition walls 2b and 3b. A passage 3g which functions as a cold air flow path is formed. A predetermined portion of the cold air passage 3g is provided with a damper assembly 4 for blocking cold air flowing out of the evaporator 7 from entering the refrigerating chamber 3. Arrows shown in FIG. 1 indicate a cold air circulation path, and reference numeral 9 denotes a compressor that forms part of a refrigeration cycle.

2 is a cross-sectional view showing an example of a damper assembly. As shown in FIG. 2, the damper assembly 4 includes a damper 4b which is installed to be opened and closed on the cold air flow path 3g, one end of which is coupled to the damper 4b, and the other end thereof is hinged 4d. The combined pressure transfer member 4g, the damper motor 4a, the actuator 4c axially coupled to the damper motor 4a, the rod member 4f and the rod member 4f that are advanced and retracted by the actuator 4c. It consists of an elastic plate 4e which exerts a force so that the damper 4b is closed to the retreat of the back side). In the above configuration, when the shaft of the damper motor 4a is rotated by a predetermined angle, for example, 180 degrees, the rod member 4f is advanced by the action of the actuator 4c to push the pressure transmitting member 4g, and eventually The damper 4b is opened. In this state, when the shaft of the damper motor 4a is further rotated by a predetermined angle, for example, 180 degrees, the rod member 4f is retracted by the action of the actuator 4c, and the elastic plate 4e is the pressure transmission member 4g. ) And eventually closes the damper 4b.

3 is a block diagram of the operation control apparatus of the refrigerator to which the method of the present invention is applied, and FIG. 4 is a detailed circuit diagram of the operation control apparatus of the refrigerator shown in FIG. As shown in Figures 3 and 4, the operation control apparatus of the refrigerator to which the present invention is applied, the microprocessor 10 for controlling the overall operation of the refrigerator, and the temperature of the freezer compartment 2 and the refrigerating compartment 3 A temperature sensing unit 20 for sensing; A load driver 30 for driving the compressor motor 34, the damper motor 36, and the fan motor 38; It includes a function setting unit 50 for selecting a desired function, including a rapid refrigeration function and a display unit 60 for displaying the operating state of the refrigerator. The temperature sensing unit 20 is a freezer compartment temperature sensing thermistor Th1 connected to the DC power supply Vcc via the voltage divider resistor R1 and a refrigerating chamber connected to the DC power supply Vcc via the voltage divider resistor R3. It consists of a temperature-sensing thermistor Th2 and its peripheral elements R2, C1: R4, C2. The microprocessor 10 determines the temperature of the freezer compartment 2 and the refrigerating compartment 3 by checking the voltages across the thermistors Th1 and Th2. The load driving unit 30 is a compressor motor driving relay which is turned on or off in accordance with a control signal output from the compressor motor 34, the damper motor 36, the fan motor 38, and the microprocessor 10, respectively. 34L), damper motor drive relay 36L, and fan motor drive relay 38L. Reference numerals 32a, 32b and 32c denote inverter elements, respectively. The function setting unit 50 includes a freezer compartment temperature setting button SW1, a refrigerator compartment temperature setting button SW2, and a quick refrigerating selection button SWn. The temperature setting of the freezer compartment 2 and the refrigerating compartment 3 may be, for example, for each temperature band. The display unit 60 displays an operation state of the refrigerator. In FIG. 4, only the quick-refrigeration display element (LED) is shown for convenience. Reference numeral INV denotes an inverter element, and R5 denotes a current limiting resistor. Reference numeral 40 denotes a damper opening and closing detection unit for detecting whether the damper 4b is opened or closed and providing the result to the microprocessor 10. In the microprocessor 10, a signal from the damper opening and closing detection unit 40 is applied. Based on this, it is possible to accurately control the interruption time of the power supplied to the damper motor 36. Reference numeral 70 denotes a power supply unit for supplying operating power (Vcc and V12, etc.) to each part of the control device including the microprocessor 10.

5 is a flow chart showing a method for controlling rapid refrigeration of a refrigerator according to one embodiment of the present invention. As shown in FIG. 5, when the user selects the rapid refrigerating button SWn while the refrigerator is operating according to the preset operation mode, in step S100, the refrigerator compartment temperature TR is set to the rapid refrigerating set temperature. It is determined whether or not the corresponding first set temperature TS1 is, for example, -4 ° C or higher. If the refrigerator compartment temperature TR is greater than or equal to the first set temperature TS1 in step S100, the process proceeds to step S102, where the compressor 4 is maintained while the damper 4b is opened to allow the cool air to flow into the refrigerator compartment 3. 9) and the cold air circulation fan (8). In step S104, it is again determined whether the refrigerating chamber temperature TR is lower than the first preset temperature TS1. If the refrigerating chamber temperature TR is greater than or equal to the first set temperature TS1 in step S104, steps S102 and S104 are repeatedly performed. If the temperature is lower than the first set temperature TS1, the process proceeds to step S106. The damper 4b is closed. In step S108, the timer t is operated to determine whether the end criterion of the rapid refrigerating function is mature. In steps S110-S114, the operation of the compressor 9 and the cold air circulation fan 8 is controlled in dependence on the freezer compartment temperature TF. In step S110, the freezer compartment temperature TF is set to the freezer set temperature. It is determined whether or not the corresponding second set temperature TS2 is, for example, -18 ° C or higher. If the freezer compartment temperature TF is greater than or equal to the second set temperature TS2 in step S110, the flow advances to step S112 to operate the compressor 9 and the cold air circulation 8, while the freezer compartment temperature TF is set to the first temperature. If it is lower than the two set temperatures TS2, the flow advances to step S114 to stop the operation of the compressor 9 and the cold air circulation fan 8. Under this control state, in step S116, it is determined whether the refrigerating chamber temperature TR is the third set temperature TS3 corresponding to the strong refrigerator set temperature, for example, -1 ° C or more. In step S116, when the refrigerator compartment temperature TR is lower than the third set temperature TS3, steps S110-S114 are repeatedly performed. When the refrigerator compartment temperature TR is equal to or greater than the third set temperature TS3, the step is performed. Proceeding to S118, the damper 4b is kept open. By this step S118, even if the freezer compartment temperature TF is lower than the second set temperature TS2 and the operation of the compressor 9 is stopped, the relatively low temperature cold air of the freezer compartment 2 is transferred to the refrigerating compartment 3. By inflow, food can be kept cold. At this time, when the cold air circulation fan 8 is operated, the amount of cold air flowing into the refrigerating chamber 3 is increased, so that food can be quickly cooled. In step S120, it is again determined whether the refrigerator compartment temperature TR is lower than the third set temperature TS3. If the refrigerator compartment temperature TR is greater than or equal to the third set temperature TS3, the steps S110 to S122 are repeated. When the refrigerating chamber temperature TR is lower than the third set temperature TS3, the flow proceeds to step S122 to close the damper 4b and to stop the operation of the cold air circulation fan 8. In step S124, it is determined whether a predetermined reference time H, for example, 2 hours has elapsed from step S108. If the reference time H has not elapsed in step S124, steps S110-S124 are repeatedly performed until the reference time H has elapsed, and if the reference time H has elapsed, the rapid refrigeration control routine To exit. After the rapid refrigeration control routine is finished, the operation of the refrigerator may be controlled according to the conventional control method described above.

In the rapid refrigeration control method described above, the first to third set temperatures TS1-TS3 and the reference time H can be appropriately changed, and the reference for the end of the rapid refrigeration, for example, the refrigerator compartment temperature TR May be set to a time point at which the temperature falls below the third set temperature TS3 by a predetermined number of times. Furthermore, the end of the rapid refrigerating function may be visually recognized by the user.

As described above, according to the rapid refrigeration control method of the refrigerator of the present invention, the food can be quickly refrigerated by appropriately controlling the compressor, the cold circulation fan, and the damper driving motor when the quick refrigeration function is selected. By keeping the food cold for a predetermined time, there is an effect that can prevent the deterioration of food and provide a cool food to the user. In particular, when it is desired to chill and eat various fruits and drinks in a hot summer, the useful value is great.

Claims (3)

A refrigeration cycle comprising a compressor (9), a condenser, a capillary tube, an evaporator (7), and a refrigerant pipe connecting them in series, for forcibly circulating cold air generated in the evaporator (7) to the freezer compartment (2) or the refrigerating compartment (3). A cold air passage 3g formed between the fan 8, the evaporator 7 and the refrigerating chamber 3, and a damper 4b for arbitrarily opening and closing the cold air passage 3g can be selected, and a rapid refrigeration function can be selected. In a refrigerator having (a) when the rapid refrigerating function is selected, the compressor (while the refrigerator compartment temperature TR is lower than the first set temperature TS1 corresponding to the rapid refrigerating temperature is kept open). 9) and operating the cold air circulation fan (8); (B) closing the damper 3g when the refrigerating chamber temperature TR becomes lower than the first set temperature TS1 in step (a); (C) When the freezer compartment temperature TF becomes above the second preset temperature TS2 corresponding to the freezer preset temperature, the compressor 9 and the cold air circulation fan 8 are operated, and the freezer compartment temperature TF is the second preset temperature ( Stopping the operation of the compressor 9 and the cold air circulation fan 8 when lower than TS2); (D) If the refrigerator compartment temperature TR is equal to or higher than the third set temperature TS3 corresponding to the strong cold set temperature during the process (c), the damper 4b is opened and the refrigerator compartment temperature TR is set to the third set temperature ( If lower than TS3), the process includes closing the damper 4b and (e) repeating the process (C) below while the predetermined criteria are not mature, and ending the rapid refrigeration function when the criteria are mature. Refrigeration control method of the refrigerator. The method according to claim 1, wherein the maturity of the reference in the process (e) is elapsed from the predetermined time (H) from the time when the refrigerating chamber temperature (TR) is lower than the first set temperature (TS1) corresponding to the rapid refrigeration temperature Rapid refrigeration control method of the refrigerator, characterized in that determined by. The cold air circulation fan 8 is operated when the refrigerating chamber temperature TR is higher than or equal to the third set temperature TS3 in the process (d), and the refrigerating chamber temperature TR is set to the third. If the temperature is lower than the TS3, the refrigeration control method of the refrigerator further comprising the step of stopping the operation of the cold air circulation fan (8).