KR100582461B1 - Method for controlling operation in a kimchi storehouse - Google Patents

Abstract

The present invention is installed in the first and second storage chamber having a storage space partitioned inside the main body, the first and second temperature sensing unit for detecting the high temperature inside, the outside temperature sensing unit for sensing the outside temperature, and the first storage room or In the operation control method of the kimchi reservoir having a valve driving unit for switching the three-way valve for adjusting the flow direction of the refrigerant for cooling operation of the second storage chamber, and a compressor driving unit for driving the compressor, according to the pre-stored operation control program Performing initial operation on the first and second storage rooms; Determining a cooling operation condition for the first and second storage rooms according to the internal temperature of the first and second storage rooms after a predetermined idle time has elapsed; Detecting an outside temperature if there is a storage room that satisfies the cooling operation condition as a result of the determination; And controlling the operation of the three-way valve and the compressor to forcibly cool the operation of the storage compartment that satisfies the cooling operation condition if the outside air temperature sensed in the step is less than the set temperature, and then forcibly operate the rest of the storage compartment. Characterized in that.

The present invention starts a cooling operation for the storage compartment with a predetermined idle time after the initial operation, thereby preventing the starting failure of the compressor, and sequentially cooling the two storage compartments according to the operating time of the compressor set in consideration of the outside temperature. Since it is possible to prevent the abnormal lowering of the high internal temperature, it is possible to maintain a good freshness of the stored food.

Description

METHOOD FOR CONTROLLING OPERATION IN A KIMCHI STOREHOUSE}

1 is a view showing a conventional refrigeration cycle to which a two-way solenoid valve is applied;

2 is a view showing a refrigeration cycle applied to the kimchi storage of the present invention,

3 is a control block diagram of the kimchi storage applied to the present invention,

4a to 4d is an operation flowchart for explaining the operation control method of the kimchi storage in accordance with the present invention.

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

20: control unit 30: first temperature detection unit

40: second temperature detection unit 50: outside temperature detection unit

60: three-way valve drive unit 70: compressor drive unit

80: driving time integration unit

The present invention relates to a method of controlling the operation of a kimchi storage, and more particularly, when a three-way valve and two evaporators are disposed on a closed circuit of a refrigeration cycle, and at least one of the two storage rooms satisfies the cooling operation condition. It relates to the operation control method of the kimchi storage to operate sequentially.

In general, kimchi storage is provided in the main body of the storage room containing foods such as kimchi, vegetables, etc., the refrigeration cycle and the ripened heater operated by the control unit to maintain the internal temperature of the storage room at a temperature suitable for cold storage and to mature the food stored It is installed around the storage room.

In such a kimchi storage, a storage room for refrigeration of kimchi is provided with a structure that also serves as a ripening room. Therefore, when the previously stored kimchi and newly made kimchi are stored together, the existing kimchi becomes excessively fermented and loses its taste. Is generated.

In view of this, in recent years, the aging room for ripening kimchi and the storage room for storing kimchi are separately partitioned, and when the ripening of the kimchi is completed in the aging room, it is converted to storage conditions to perform the role of the storage room. Storage became convenient.

As such, in the kimchi storage provided with two storage chambers, a refrigeration cycle including one compressor and two evaporators is generally applied. As shown in FIG. 1, two Kimchi storages are used to cool the first storage chamber R1 and the second storage chamber R2. Two evaporators 1A and 1B are installed in parallel. Then, the first and second capillary tubes 5A and 5B are disposed upstream of the first evaporator 1A and the second evaporator 2A, respectively, and the upstream sides of the first and second capillary tubes 5A and 5B. First and second solenoid valves 4A and 4B are respectively provided for controlling the refrigerant flow. At this time, the first and second solenoid valves 4A and 4B are a kind of two-way valves, while the refrigerant flow is maintained at the time of closing while the refrigerant flow is closed.

However, in the conventional refrigeration cycle employing two evaporators, since the two solenoid valves for supplying the refrigerant to the first evaporator and the second evaporator are respectively installed, the labor cost increases and the manufacturing cost increases.

In addition, when a 2-way solenoid valve is used, an intermittent operation is frequently performed for each solenoid valve to control the flow of refrigerant whenever the cooling conditions of each storage chamber are satisfied. As the complexity increases and the flow of the refrigerant is restricted during non-compressor operation, compressor start-up failure occurs due to the pressure difference between the front and rear of the compressor, and it is intermittently cooled depending on the internal temperature of each storage room without considering the outside temperature. Since the operation is performed, the internal temperature is lowered to an abnormally low temperature, thereby reducing the freshness of the stored food.

Therefore, a conventional three-way valve is installed without using a two-way solenoid valve applied for cooling operation of each storage room in a kimchi storage, and a method of controlling the operation of the three-way valve and the compressor according to the cooling conditions of each storage room. This situation is desperately required.

An object of the present invention is to provide a method of controlling the operation of a kimchi storage in which a storage room that satisfies the cooling operation conditions of two storage rooms is preferentially cooled and then the remaining storage room can be sequentially cooled.

Another object of the present invention is to provide an operation control method of a kimchi storage to prevent abnormal degradation of the internal temperature by limiting the operation time of the compressor driven to cool each storage chamber under an overload condition having a high outside temperature.

The operation control method of the kimchi storage according to the present invention as described above is installed in the first and second storage chambers having storage spaces partitioned inside the main body, the first and second temperature sensing unit for detecting the internal temperature and the outside temperature sensing Compressor operation control of the Kimchi reservoir having an outside air temperature sensing unit, a valve driving unit for switching a three-way valve for controlling the flow direction of the refrigerant to cool the first storage chamber or the second storage chamber, and a compressor driving unit for driving the compressor. A method, comprising: performing an initial operation on a first and a second storage room according to a pre-stored operation control program; Determining a cooling operation condition for the first and second storage chambers according to the internal temperature of the first and second storage chambers after a predetermined idle time has elapsed; Detecting an outside temperature if there is a storage room that satisfies the cooling operation condition as a result of the determination; And controlling the operation of the three-way valve and the compressor in order to forcibly cool the operation of the storage chamber that satisfies the cooling operation condition if the outside air temperature detected in the step is not higher than the set temperature, and then forcibly cool the remaining storage chamber. Is achieved.

The present invention is characterized in that if the first and second storage chambers all satisfy the cooling operation conditions, the cooling chamber is preferentially operated in a high storage temperature of a high internal temperature and then the remaining storage chamber is cooled.

In addition, the present invention is to accumulate the operation time of the compressor driven to preferentially cool the operation of any one of the storage compartment, and to cool the remaining storage compartment during the operation time calculated by multiplying the operation time accumulated by the step by a predetermined weight. Driving a compressor for operation.

In addition, the present invention includes the step of performing a cooling operation in a range not exceeding the set time for the storage room that satisfies the cooling operation condition or the storage room that does not satisfy the cooling operation condition if the detected outside temperature is higher than the set temperature. do.

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

Figure 2 is a view showing a refrigeration cycle applied to the kimchi storage of the present invention, the three-way valve is installed on the outlet side of the condenser to condense by exchanging the refrigerant compressed to high temperature, high pressure in the compressor outside air, the outlet side of the three-way valve First and second capillary tubes and first and second evaporators for parallel cooling between the first and second capillaries for cooling the first and second reservoirs, respectively, between the first capillary tube and the first evaporator and simultaneously 2 Kimchi storage is equipped with a refrigeration cycle in which a capillary tube and a second evaporator are connected in series.

As shown in Figure 2, the refrigeration cycle according to the present invention is a compressor (12) for compressing the refrigerant at high temperature, high pressure, the refrigerant compressed by high temperature, high pressure by the compressor 12 to condense by heat exchange with the outside air First and second capillary tubes 15A and 15B which are arranged in parallel to individually cool the condenser 13 and the two storage chambers R1 and R2 and expand and convert the condensed refrigerant into low temperature and low pressure; First and second evaporators 11A and 11B for heat-exchanging the refrigerant converted to low temperature and low pressure by the first and second capillary tubes 15A and 15B to the high-temperature air in each of the storage chambers R1 and R2, and It is comprised between the outlet side of the condenser 13, and the inlet side of the said 1st, 2nd capillary tube 15A, 15B and the three-way valve 14 which supplies the condensed refrigerant | coolant.

Referring to Figure 3, the present invention, the control unit 20 for controlling the overall operation of the kimchi storage, and the first and second temperature sensing unit for detecting the internal temperature of the first and second storage chamber (R1) (R2), respectively ( 30) (40), the outside air temperature sensing unit 50 for sensing the outside temperature, the three-way valve driving unit 60 for switching the three-way valve 14 for controlling the flow of the refrigerant by the control unit 20, The control unit 20 includes a compressor driving unit 70 for driving the compressor 12 and an operation time integration unit 80 for accumulating the operation time and the rest time of the compressor 12.

The first and second temperature detectors 30 and 40 are implemented as temperature sensors installed in the first and second storage chambers R1 and R2, and the controller 20 is configured to detect a temperature detection value corresponding to the detected inside temperature. )

The outside temperature sensing unit 50 is implemented as a temperature sensor installed in place outside the body or inside the body, and outputs a temperature sensing value corresponding to the sensed outside temperature to the controller 20.

The three-way valve driving unit (60) is a compressor 12 through the first capillary tube (15A) and the first evaporator (11A) the refrigerant condensed in the condenser (13) when performing the cooling operation for the first storage chamber (R1). The three-way valve 14 is switched in accordance with the control signal of the control unit 20 so as to flow to the second storage pipe, and the refrigerant condensed in the condenser 13 when the cooling operation is performed on the second storage chamber R2. The three-way valve 14 is switched according to the control signal of the controller 20 so as to flow to the compressor 12 via 15B) and the second evaporator 11B.

The compressor driver 70 drives the compressor 12 by the controller 20 when performing a cooling operation on the first storage chamber R1 or the second storage chamber R2.

The operation time integrating unit 80 accumulates the operation time of the compressor 12 driven by the cooling operation or the off time at operation stop, and outputs the accumulated operation time or off time to the controller 20.

The controller 20 performs an initial operation by driving the compressor 12 for a predetermined time according to a program stored in advance when the power is applied, and when the initial operation is finished, a predetermined amount of the control unit 20 is prevented from starting failure due to the pressure difference between the front and rear ends of the compressor. After the idle time has elapsed, determine the cooling operation condition according to the internal temperature of the refrigerator. That is, the control unit 20 determines that the cooling operation condition is satisfied when the inside temperature detected by the first temperature detecting unit 30 is higher than the refrigerated storage temperature preset for the first storage chamber R1 and the second temperature. If the inside temperature detected by the sensing unit 40 is higher than the preset temperature set for the second storage chamber R2, it is determined that the cooling operation condition is satisfied.

When there is a storage compartment that satisfies the cooling operation condition, the controller 20 outputs a control signal to the three-way valve driver 60 so that the refrigerant is supplied to the evaporator corresponding to the storage compartment, and thus the three-way valve driver 60 is The three-way valve 14 is switched. At the same time, the controller 20 drives the compressor 12 by controlling the compressor driver 70 to perform a cooling operation on the storage compartment.

The control unit 20 has a high internal temperature of the first and second storage chambers R1 and R2 that is higher than a set refrigerated storage temperature, so that all of the first and second storage chambers R1 and R2 satisfy the cooling operation conditions. By comparing the high temperature inside, the storage room with high internal temperature is cooled first and cooling operation is performed secondly for the remaining storage room. The secondary cooling operation is more than the operation time of the compressor driven during the first cooling operation. Drive relatively short

In addition, the control unit 20 performs a cooling operation on a storage chamber that satisfies the cooling operation condition first if only one of the first and second storage rooms R1 and R2 satisfies the cooling operation condition. Next, the cooling operation is performed to the storage compartment that does not satisfy the cooling operation condition in the second operation. The second cooling operation is operated relatively shorter than the operation time of the compressor driven during the first cooling operation.

In addition, the controller 20 compares the outside air temperature detected by the outside air temperature sensing unit 50 with the set temperature (for example, 43 ° C.) if there is at least one storage room that satisfies the cooling operation condition. The operation time of the compressor 12 driven to perform the cooling operation and the secondary cooling operation is limited. In the state where the outside air temperature is high, each storage compartment (referred to as the refrigerant remaining in the refrigerant pipe of the evaporators 11A and 11B) is used. This is because erroneous detection of the high internal temperature of R1) (R2) can be avoided.

Hereinafter, the operation control method of the kimchi storage according to the present invention will be described in detail according to the flow chart.

First, when power is supplied to the Kimchi refrigerator, the control unit 20 performs an initial operation of cooling the storage rooms R1 and R2 according to a previously stored operation control program (S100).

When the initial operation is finished, the compressor 12 is turned off. From this time, the operation time integration unit 80 counts the compressor off time, and outputs the counted compressor off time to the controller 20 (S101).

The control unit 20 determines whether or not the compressor off time has elapsed from the set idle time (for example, 4 minutes) (S102), which prevents the compressor from starting due to the pressure difference. This is to perform cooling operation for storage room stably while maintaining equilibrium.

When the idle time has elapsed, the control unit 20 receives the internal temperature of the first and second storage chambers R1 and R2 detected through the first and second temperature sensing units 30 and 40 (S103). In operation S104, it is determined whether the cooling operation condition is satisfied by comparing with the refrigerated storage temperature set for each storage compartment.

As a result of the determination, when both the first and second storage chambers R1 and R2 satisfy the cooling operation condition, the controller 20 receives the outside temperature detected by the outside temperature sensing unit 50 and is higher than the preset set temperature. It is determined (S105-S106).

If both of the first and second storage chambers R1 and R2 satisfy the cooling operation condition and the outside temperature is not higher than the set temperature, the internal temperature of the first storage chamber R1 and the internal storage temperature of the second storage chamber R2 are compared. Cooling operation is first performed for the storage compartment having a high internal temperature (S107-S108), and the control unit 20 operates the three-way valve driving unit 60 to cool the storage chamber having a high internal temperature. By controlling the three-way valve 14 to control the flow of the refrigerant to control the compressor driving unit 70 to drive the compressor (12). As a result, the cooling operation is primarily performed for the storage chamber (high-rank storage chamber) having a higher internal temperature. When the first cooling operation is continued and the internal temperature of the high-rank storage room is kept at the set refrigerated storage temperature, the control unit 20 turns off the compressor 12, and the first time counted by the operation time integrating unit 80 until this time. The compressor operation time T1 according to the cooling operation is received (S109). Subsequently, the controller 20 calculates the secondary compressor operation time T2 = T1 × W1 by multiplying the primary compressor operation time T1 by a predetermined weight W1 (S110). This weight W1 is an experimental value obtained through a plurality of experiments, and is preferably set to 0.33 obtained under the condition that the outside temperature is about 30 ° C. Secondly, the cooling operation is performed to the storage compartment (lower priority storage compartment) that satisfies the cooling operation condition and has a relatively low internal temperature, and the controller 20 cools the storage compartment (low priority storage compartment) having a low internal temperature. In order to control the three-way valve driving unit 60 to switch the three-way valve 14 to control the flow of the refrigerant, and to control the compressor driving unit 70 to drive the compressor 12 to perform the cooling operation for the storage chamber (lower-order storage chamber) It performs (S111). When the secondary compressor operation time T2 calculated during the secondary cooling operation elapses, the control unit 20 turns off the compressor 12 and returns (S113).

If all of the first and second storage chambers R1 and R2 satisfy the cooling operation condition and the outside temperature is higher than the set temperature, the internal temperatures of the first and second storage chambers R1 and R2 are compared, and the storage chamber having a high internal temperature is compared. When the cooling operation is performed primarily (S114-S115), and the first cooling operation is continued, and the internal temperature of the high-level storage chamber falls and falls below the set temperature, the compressor 12 is turned off, and the primary cooling counted up to this point is The compressor operation time (T1) according to the operation is received (S116). Subsequently, the controller 20 calculates a second compressor operation time T2 = T1 × W1 by multiplying the first compressor operation time T1 by a predetermined weight W1 (S117). Subsequently, the cooling operation is performed secondarily to the storage chamber (lower-level storage chamber) that satisfies the cooling operation condition and has a relatively low internal temperature (S118). Thus, while performing the secondary cooling operation, the control unit 20 determines whether the secondary compressor operation time T2 has passed the first predetermined time (for example, 15 seconds) (S119), and passes the first predetermined time. If not, continue with the second cooling operation to the lower storage compartment. If the second compressor operation time T2 has passed the first set time, it is determined whether the second set time (for example, 40 seconds) has elapsed (S120), and if the second set time has not elapsed, the low priority storage room continues. While performing the second cooling operation for, when the second set time has elapsed, the compressor 12 is turned off and then returned (S121).

Meanwhile, it is determined whether the cooling operation condition is satisfied according to the internal temperature of the first and second storage chambers R1 and R2 detected by the first and second temperature sensing units 30 and 40 (S122). As a result of the determination, when only the first storage chamber R1 corresponds, the controller 20 receives the outside temperature sensed by the outside temperature sensing unit 50 and determines whether it is smaller than a preset set temperature (S123-S124).

If only the first storage chamber (R1) satisfies the cooling operation conditions and the outside temperature is not higher than the set temperature, the control unit 20 is a three-way valve driving unit (1) to perform the first cooling operation for the first storage chamber (R1) 60, the three-way valve 14 is switched to control the flow of the refrigerant, and the compressor driving unit 70 is controlled to drive the compressor 12. Accordingly, the cooling operation is primarily performed on the first storage chamber R1 (S125). When the first cooling operation is continued and the internal temperature of the first storage chamber R1 drops and is maintained at the refrigerated storage temperature, the control unit 20 turns off the compressor 12, and until this time is counted by the operation time integrating unit 80. The compressor operation time T1 according to the primary cooling operation is received (S126). Subsequently, the controller 20 calculates a secondary compressor operating time T2 = T1 × W2 by multiplying the primary compressor operating time T1 by a predetermined weight W2 (S127). This weight (W2) is an experimental value obtained through a plurality of experiments, and is preferably set to 0.2 obtained under the condition that the outside temperature is about 30 ° C. The second storage chamber (R2) performs a secondary cooling operation, wherein the control unit 20 controls the three-way valve driving unit 60 to cool the second storage chamber (R2) to operate the three-way valve (14). By switching to adjust the flow of the refrigerant and controls the compressor driving unit 70 to drive the compressor 12 (S128). When the secondary compressor operation time T2 calculated during the secondary cooling operation elapses, the controller 20 turns off the compressor 12 and returns (S129-S130).

If only the first storage chamber R1 satisfies the cooling operation condition and the outside temperature is higher than the set temperature, the first storage chamber R1 performs the cooling operation primarily with respect to the first storage chamber R1 (S131), and the first cooling operation continues to perform the first cooling operation. When the internal temperature of the storage compartment R1 is kept low and the refrigerated storage temperature is maintained, the compressor 12 is turned off, and the compressor operation time T1 according to the first cooling operation counted up to this time is input (S132). Subsequently, the controller 20 calculates a secondary compressor operation time T2 = T1 × W2 by multiplying the primary compressor operation time T1 by a predetermined weight W2 (S133). Subsequently, a second cooling operation is performed on the second storage chamber R2 (S134). During the secondary cooling operation as described above, the controller 20 determines whether the second compressor operation time T2 has passed the second set time (for example, 40 seconds) (S135), and passes the second set time. If not, the second cooling operation for the second storage chamber R2 is continuously performed. If the second preset time has elapsed, the compressor 12 is turned off and then returned (S136).

Meanwhile, it is determined whether the cooling operation condition is satisfied according to the internal temperature of the first and second storage chambers R1 and R2 detected by the first and second temperature sensing units 30 and 40 (S137). If only the second storage room R2 corresponds to the determination result, the control unit 20 receives the outside temperature sensed by the outside temperature sensing unit 50 and determines whether the temperature is higher than the preset set temperature (S138-S139).

If only the second storage compartment (R2) satisfies the cooling operation conditions and the outside temperature is not higher than the set temperature, the first storage operation is performed to the second storage compartment (R2) (S140), and the first cooling operation is continued. When the internal temperature of the second storage compartment R2 drops and is maintained at the refrigerated storage temperature, the control unit 20 turns off the compressor 12, and the compressor operation according to the first cooling operation counted by the operation time integrating unit 80 until this time. The second compressor operation time T2 = T1 x W2 is calculated by multiplying the time T1 by a predetermined weight W2, and then a second cooling operation is performed on the first storage chamber R1 (S141-S143). When the second compressor operation time T2 calculated during the second cooling operation of the first storage chamber R1 elapses, the control unit 20 turns off the compressor 12 and returns (S144-S145). ).

If only the second storage chamber R2 satisfies the cooling operation condition and the outside temperature is higher than the set temperature, the second storage chamber R2 performs the cooling operation primarily with respect to the second storage chamber R2 (S146), and the first cooling operation continues and the second The compressor 12 is turned off when the internal temperature of the storage compartment R2 falls and the refrigeration storage temperature is maintained, and the secondary compressor obtained by multiplying the compressor operating time T1 according to the primary cooling operation counted up to this time by a predetermined weight W2. The operation time (T2 = T1 x W2) is calculated and then a second cooling operation is performed on the first storage chamber R1 (S147-S149). The controller 20 determines whether the second compressor operation time T2 has passed the second predetermined time (for example, 40 seconds) while performing the second cooling operation on the first storage chamber R1 (S150). If the second set time has not elapsed, the second cooling operation for the first storage chamber R1 is continuously performed. If the second set time has elapsed, the compressor 12 is turned off and returned (S151). ).

As described above, the present invention starts the cooling operation for the storage chamber in a state where the pressure equilibrium of the compressor front and rear ends at a predetermined rest time, thereby preventing the starting failure of the compressor. In addition, since the cooling operation is performed sequentially for the two storage chambers according to the operating time of the compressor set in consideration of the outdoor temperature, it is possible to prevent abnormally lowering of the internal temperature as compared to the intermittent cooling operation only depending on the internal temperature as before. Therefore, the freshness of the stored food can be maintained well.

Claims (4)

First and second temperature sensing units installed in the first and second storage chambers having storage spaces separated from each other in the main body to sense a high internal temperature, an outside temperature sensing unit sensing an outside temperature, and the first storage chamber or the second storage chamber In the operation control method of the kimchi storage having a valve driving unit for switching the three-way valve for adjusting the flow direction of the refrigerant for cooling operation and a compressor driving unit for driving the compressor, Performing initial operations on the first and second storage rooms according to a pre-stored operation control program; Determining a cooling operation condition for the first and second storage chambers according to the internal temperature of the first and second storage chambers after a predetermined idle time has elapsed; Detecting an outside temperature if there is a storage room that satisfies the cooling operation condition as a result of the determination; And Controlling the operation of the three-way valve and the compressor in order to forcibly cool the operation of the storage chamber that satisfies the cooling operation condition and then forcibly cool the rest of the storage chamber if the outside air temperature detected in the step is not higher than the set temperature. Operation control method of the kimchi storage. The method of claim 1, If both of the first and second storage chambers satisfy the cooling operation conditions, the operation control method of the kimchi storage, characterized in that the high-temperature high storage chamber is preferentially cooled and then the remaining storage chamber is cooled. The method according to claim 1 or 2, Accumulating the operation time of the compressor which drives the first storage compartment in order to preferentially cool the operation, and compressing the compressor for the cooling operation of the remaining storage compartment during the operation time calculated by multiplying the operation time accumulated by the step by a predetermined weight. Operation control method of the kimchi storage, characterized in that it comprises a step of driving. The method of claim 1, If the detected outside temperature is higher than the set temperature, the operation of the Kimchi storage, characterized in that the cooling operation in the storage room that satisfies the cooling operation conditions or the storage room that does not satisfy the cooling operating conditions within the range not exceeding the set time. Control method.

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