JP4228231B2 - Control method and apparatus for refrigerator - Google Patents

Description

  The present invention relates to a refrigerator control method and apparatus for controlling the refrigerator internal temperature.

There is a kimchi storage as a prior art of this kind. This kimchi storage includes a key input unit, a temperature sensor provided in the partition wall of the storage body, a control unit provided in the control box, an evaporator provided in the partition wall of the storage body, And a compressor installed in the machine room. When the refrigerated storage mode is selected by operating the key input unit, the control unit drives the compressor to circulate the refrigerant. While this refrigerant is vaporized in the evaporator, it takes ambient heat and cool air is generated from the evaporator, and the storage chamber is cooled by this cool air. On the other hand, the control unit drives the compressor when the temperature in the storage chamber detected by the temperature sensor rises to the compressor operating temperature, and drives the compressor when the temperature in the storage chamber falls to the compressor stop temperature. It stops once (for example, refer patent document 1).
Japanese Patent Laid-Open No. 11-316073 (page 2 to page 3, FIGS. 1 to 2)

In the conventional storage described above, in cold regions where the outside air temperature is low in winter, the time that the temperature detected by the temperature sensor rises from the compressor stop temperature to the compressor operating temperature is delayed, and the compressor stop time may be prolonged. It was. In the case of a refrigerator, in particular, the inside temperature of the freezer compartment is higher than the set temperature, which may affect the frozen food.
The present invention has been made in order to solve such a problem, and is a refrigerator that keeps the inside temperature at a set temperature even in a place where the outside temperature is low such that the stop time of the compressor is prolonged. It is an object to provide a control method and apparatus.

In the refrigerator control method according to the present invention, the refrigerator body is partitioned into a freezer compartment and a refrigerator compartment, a temperature sensor is installed in the refrigerator compartment, and the compressor operating temperature corresponds to the set temperature of the temperature controller. and the compressor stop temperature is set to drive the compressor when the temperature detected by the temperature sensor has risen to the compressor operating temperatures, the operation of the compressor when the temperature detected by the temperature sensor decreases to compressors stop temperature stop, at the stop time of the compressor predetermined set stop time or more, and when the detected temperature of the temperature sensor is equal to or higher than a temperature obtained by adding a predetermined temperature to the compressor stop temperature, the detected temperature is set to the set temperature compression The compressor is forcibly driven even before the machine operating temperature is reached .

In addition, the refrigerator control device according to the present invention is a temperature sensor installed in a refrigeration room among a freezing room and a refrigeration room formed by dividing the interior of the refrigerator body, and a temperature for setting the temperature in the refrigeration room . The compressor operating temperature and compressor stop temperature are set respectively corresponding to the set temperature of the temperature control unit and the temperature control unit, and the compressor is driven when the temperature detected by the temperature sensor rises to the compressor operating temperature. Control means for stopping the drive of the compressor when the detected temperature of the sensor falls to the compressor stop temperature, and the control means detects the temperature sensor when the stop time of the compressor is not less than a predetermined set stop time. When the temperature is equal to or higher than the temperature obtained by adding a predetermined temperature to the compressor stop temperature , the compressor is forcibly driven even before the detected temperature reaches the compressor operating temperature set to the set temperature.

In the present invention, to drive the compressor when the temperature detected by the temperature sensor has risen to the compressor operating temperatures, it stops driving the compressor when the temperature detected by the temperature sensor decreases to compressors stop temperature, compression in machine downtime predetermined set stop time or more, and when the detected temperature of the temperature sensor is equal to or higher than a temperature obtained by adding a predetermined temperature to the compressor stop temperature, to the detected temperature compressor operating temperatures set in the setting temperature since so even before forcibly driving the compressor to reach, it is possible to suppress the temperature rise of the cold Koshitsu even in a state the temperature increase rate is low in the refrigerating compartment at an early stage by the effect of low outside air temperature In addition, even when the set temperature is changed, the temperature of the freezer can be stabilized more quickly.

In the present invention, when the temperature detected by the temperature sensor rises to the operating temperature of the compressor, the compressor is driven, and when the temperature detected by the temperature sensor drops to the compressor stop temperature, the driving of the compressor is stopped. at the stop time of the compressor is predetermined set stop time or more, and when the detected temperature of the temperature sensor is equal to or higher than a temperature obtained by adding a predetermined temperature to the compressor stop temperature, the compressor operating temperatures to which the detected temperature is set to the set temperature since so also forcibly drive the compressor even before reaching the lower the influence of the outside temperature to suppress early temperature rise of the cold Koshitsu even if the temperature increase rate becomes a low state of the refrigerating compartment In addition, even when the set temperature is changed, the temperature of the freezer can be stabilized more quickly.

Hereinafter, a refrigerator control device using the control method of the present invention will be described in detail.
FIG. 1 is a side sectional view of a refrigerator in the embodiment of the present invention, FIG. 2 is a front view of a control box provided in the refrigerator of the embodiment, and FIG. 3 is a schematic block configuration showing a control device of the refrigerator of the embodiment FIG.
In the refrigerator of the present embodiment, the interior of the refrigerator main body 1 is partitioned into an upper part and a lower part by a partition wall 4, and the upper part is a freezer compartment 2 and the lower part is a refrigerator compartment 3. An evaporator 5 and a blower 6 are installed in the freezer compartment 2, and a control box 8 and a vegetable storage case 9 are provided in the refrigerator compartment 3. A compressor 7 is installed at the bottom of the refrigerator body 1. The external appearance of the control box 8 is as shown in FIG. 2, and a dial 11a for setting the temperature in the refrigerator compartment 3 is mounted on the front surface, and a temperature sensor for detecting the temperature of the refrigerator compartment 3 inside. 10. Control unit 12 for controlling the on / off of the compressor 7 via the temperature adjusting unit 11 for outputting the set temperature in accordance with the operation of the dial 11a, the compressor driving unit 13, and for controlling the operation of the blower 6. A memory 12a and the like are provided.

  For example, as shown in FIG. 4, the set temperature in the refrigerator compartment 3 is up to 13 levels in increments of 0.6 ° C., the set temperatures from ranks 1 to 4 are classified as “weak”, and the set temperatures from ranks 5 to 9 are “ The “medium” category and the set temperatures of ranks 10 to 13 are classified as “strong” categories, and the set stop time tH of the compressor 7 is assigned to each category (weak, medium, strong). The weak / medium / strong classification corresponding to the set temperature and the set stop time tH set in accordance with each classification are stored in the memory 12a as data. Further, the memory 12a includes a lower limit set time tL (for example, approximately 5 minutes) of the compressor 7 stop time, compressor operating temperature and compressor stop temperature respectively set corresponding to each set temperature, and when the outside temperature is low. The predetermined temperature used (for example, + 1 ° C.) is stored as data. Approximately 5 minutes of the lower limit setting time tL is the drive inhibition time of the compressor 7.

  The control unit 12 described above is initialized when power is applied, and drives the compressor 7 via the compressor driving unit 13. When the set temperature is input from the temperature adjusting unit 11 by operating the dial 11a, the compressor operating temperature and the compressor stop temperature set corresponding to the set temperature are read from the memory 12a and the compressor 7 is controlled. to go into. When the detected temperature of the temperature sensor 10 rises to the compressor operating temperature, the compressor 7 is driven. When the detected temperature is lowered to the compressor stop temperature by driving the compressor 7, the driving of the compressor 7 is stopped. When the stop time of the compressor 7 is not less than the set stop time tH selected based on the set temperature and the detected temperature of the temperature sensor 10 is not less than the compressor stop temperature + predetermined temperature, the detected temperature becomes the set temperature. Even before reaching the set compressor operating temperature, the compressor 7 is forcibly driven.

Next, the operation of the present embodiment will be described with reference to FIGS. FIG. 5 is a flowchart showing the operation of the control device of the refrigerator, and FIG. 6 shows the detected temperature of the temperature sensor, the driving state of the compressor, and the average temperature in the freezer compartment when the outside temperature is high and the outside temperature is low. FIG.
When power is applied to the refrigerator body 1 and a preset temperature is selected by the dial 11a, the control unit 12 initializes (S10) and drives the compressor 7 via the compressor drive unit 13 (S20). Then, although not shown in the flowchart of FIG. 5, the set temperature based on the selection operation of the dial 11 a is read from the temperature adjusting unit 11 and the control of the compressor 7 is started.

  First, the detected temperature of the temperature sensor 10 is input (S30), the compressor stop temperature set corresponding to the previously read set temperature is read from the memory 12a, and the detected temperature becomes lower than the compressor stop temperature. It is determined whether or not (S40). When the detected temperature of the temperature sensor 10 is higher than the compressor stop temperature, the process returns to S20 and the drive of the compressor 7 is held, and when the detected temperature of the temperature sensor 10 becomes equal to or lower than the compressor stop temperature, the compressor is driven. The drive of the compressor 7 is stopped via the part 13 (S50). When the compressor 7 is stopped, measurement of the stop time of the compressor 7 is started (S60), the memory 12a is accessed, the weak / medium / strong classification is determined from the previously set temperature, and the classification is made. The set stop time tH of the set compressor 7 is read and set (S70). For example, when the set temperature (4.2 ° C.) of rank 5 is selected by the dial 11a, the section is determined to be “medium”, and the set stop time tH of the compressor 7 set to the section is read by b.

  Thereafter, it is determined whether or not the stop time from which measurement is started from S60 is equal to or longer than the lower limit set time tL (approximately 5 minutes) stored in the memory 12a (S80). When the stop time is less than the lower limit set time tL, the process waits at S80 until the lower limit set time tL elapses, and the drive stop of the compressor 7 is held. When the stop time of the compressor 7 is less than the lower limit set time tL, the compressor 7 is not driven even if the temperature detected by the temperature sensor 10 reaches the compressor operating temperature. This is to prevent frequent operation of the compressor 7. When the stop time becomes equal to or longer than the lower limit set time tL, it is determined whether or not the stop time is equal to or longer than the set stop time tH (b minutes) set in S70 (S90).

  Since the stop time of the compressor 7 is short when the outside temperature is high, the compressor operating temperature set corresponding to the set temperature is read from the memory 12a and set (S150), and the temperature detected by the temperature sensor 10 is input (S160). ), It is determined whether or not the detected temperature has increased to the compressor operating temperature (S170). When the detected temperature has not reached the compressor operating temperature, the process returns to S90, and it is determined again whether or not the stop time of the compressor 7 is equal to or longer than the set stop time tH (b minutes). When the stop time is less than the set stop time tH (b minutes) and the temperature detected by the temperature sensor 10 has not risen to the compressor operating temperature, the operations of S90 → S150 → S160 → S170 are repeated. While the operation is repeated, when the stop time of the compressor 7 becomes equal to or longer than the set stop time tH (b minutes), the process proceeds to S100, but when the stop time is less than the set stop time tH (b minutes). When the temperature detected by the temperature sensor 10 rises to the compressor operating temperature, the compressor 7 is driven via the compressor drive unit 13 (S130), and the measured stop time of the compressor 7 is cleared (S140). Return to S30.

  When the above-described operation is repeated, the state shown in FIG. This state is when the outside air temperature of the refrigerator is as high as 30 ° C., for example, and the temperature in the refrigerator compartment 3 is likely to rise due to the influence, and the temperature in the refrigerator compartment 3 when the compressor 7 is stopped (the temperature detected by the temperature sensor 10). ) Rises to the compressor operating temperature, the compressor 7 is driven. When the temperature in the refrigerator compartment 3 drops to the compressor stop temperature by this driving, the driving of the compressor 7 is stopped, and this is repeated. By this control, the average temperature in the freezer compartment 2 of the refrigerator is lowered, and this state is maintained.

  When the control pattern shown in FIG. 6A is repeated, the set stop time tH (b minutes) elapses before the detected temperature of the temperature sensor 10 becomes equal to or higher than the compressor operating temperature. Reads the predetermined temperature (+ 1 ° C.) from the memory 12a and adds it to the compressor stop temperature set in S40 (S100). Then, the temperature detected by the temperature sensor 10 is input (S110), and it is determined whether or not the detected temperature is equal to or higher than the compressor stop temperature + a predetermined temperature (S120). When the detected temperature is not higher than the compressor stop temperature + predetermined temperature, the operations of S110 → S120 are repeated until the detected temperature is higher than the detected temperature. When the detected temperature is equal to or higher than the compressor stop temperature + predetermined temperature, the compressor 7 is forcibly driven via the compressor drive unit 13 (S130), and the measured stop time of the compressor 7 is cleared. (S140), the process returns to S30.

  When this operation is repeated, the state shown by the solid line in FIG. This state is when the outside air temperature of the refrigerator is as low as 5 ° C., for example, before the temperature in the refrigerator 3 when the compressor 7 stops (the temperature detected by the temperature sensor 10) rises to the compressor operating temperature. When the stop time of 7 is equal to or longer than the set stop time tH (b minutes) and the temperature in the refrigerator compartment 3 is equal to or higher than the compressor stop temperature + predetermined temperature, the compressor 7 is forcibly driven, and this drive causes the refrigerator When the temperature in the chamber 3 falls to the compressor stop temperature, the drive of the compressor 7 is stopped and this is repeated. By this control, the average temperature in the freezer compartment 2 of the refrigerator becomes lower than the conventional temperature. The broken line shown in FIG. 5B shows the change in temperature detected by the temperature sensor when the conventional kimchi storage control described above is used in the refrigerator and the driving state of the compressor. The average temperature in the chamber 2 increases.

  When the outside air temperature is 5 ° C. and the set temperature based on the selection operation of the dial 11a of the temperature adjusting unit 11 is in the “weak” category, it is as shown in FIG. When the classification is “weak”, the set stop time tH is a minutes shorter than b minutes (see FIG. 4), the stop time of the compressor 7 is longer than the set stop time tH (a minutes), and the temperature sensor When the detected temperature 10 is equal to or higher than the compressor stop temperature + predetermined temperature, the compressor 7 is forcibly driven. When the detected temperature of the temperature sensor 10 is lowered to the compressor stop temperature by this drive, the compressor 7 Stop driving and repeat this. Since the compressor 7 is forcibly driven earlier than the conventional one indicated by the broken line, an increase in the average temperature of the freezer compartment 2 is suppressed and the frozen food is not affected.

Next, as shown in FIG. 8, an operation immediately before the classification is changed from “medium” to “weak” due to a change in the set temperature at a low outdoor temperature (5 ° C.) will be described.
When the control unit 12 is controlling the compressor 7 with the control pattern shown in FIG. 8A, when a set temperature of, for example, 6.0 ° C. by the operation of the dial 11a is input through the temperature adjustment unit 11, the temperature sensor 10 The compressor 7 is controlled until the detected temperature becomes equal to or lower than the compressor stop temperature (S20 to S140). When it is confirmed by this control that the temperature detected by the temperature sensor 10 has become equal to or lower than the compressor stop temperature (S40), the drive of the compressor 7 is stopped via the compressor drive unit 13 (S50). The measurement of the stop time is started (S60). Then, the value a of the set stop time tH of the compressor 7 is read from the previously set temperature (6.0 ° C.) and set (S70), and the stop time of the compressor 7 is the lower limit set time tL (approximately 5 minutes). It waits until it becomes above (S80).

  Thereafter, it is determined whether or not the stop time of the compressor 7 is equal to or longer than the set stop time tH (a minutes) set previously (S90). At this time, since the stop time of the compressor 7 is short, the compressor operating temperature set corresponding to the set temperature (6.0 ° C.) is read from the memory 12a and set (S150), and the temperature detected by the temperature sensor 10 is input. Then, it is determined whether or not the detected temperature has increased to the compressor operating temperature (S170). When the detected temperature has not reached the compressor operating temperature, the process returns to S90 to determine again whether or not the stop time of the compressor 7 is equal to or longer than the set stop time tH (a minutes). As described above, this operation is repeatedly performed when the stop time is less than the set stop time tH (a minute) and the temperature detected by the temperature sensor 10 has not risen to the compressor operating temperature. When this operation is repeated, the temperature detected by the temperature sensor 10 (the temperature of the refrigerator compartment 3) gradually increases as shown in FIG. 8B.

  In this state, when the stop time of the compressor 7 becomes equal to or longer than the set stop time tH (a minutes) (S90), the predetermined temperature (+ 1 ° C.) is added to the compressor stop temperature set in S40 (S100), and the temperature sensor The detected temperature of 10 is input (S110), and it is determined whether the detected temperature is equal to or higher than the compressor stop temperature + predetermined temperature (S120). In this case, since the compressor stop temperature of the set temperature (6.0 ° C) in the category "Weak" is higher than the compressor stop temperature of the set temperature (4.2 ° C) in the category "Medium", the detected temperature is the compressor stop temperature + The operation of S110 → S120 is repeated until the predetermined temperature is reached. Then, when the temperature detected by the temperature sensor 10 rises to the compressor stop temperature and further exceeds a predetermined temperature, the compressor 7 is driven via the compressor drive unit 13 (S130), and the measured compressor 7 Is cleared (S140), and the process returns to S30.

  At this time, the control unit 12 inputs the detected temperature of the temperature sensor 10 (S30), and drives the compressor 7 until the detected temperature becomes equal to or lower than the compressor stop temperature (S20 to S40). When the temperature detected by the temperature sensor 10 becomes equal to or lower than the compressor stop temperature due to the drive of the compressor 7 (S40), the drive of the compressor 7 is stopped via the compressor drive unit 13 (S50). The stop time measurement is started (S60). Then, “a” of the set stop time tH of the compressor 7 is read from the memory 12a and set (S70), and the process waits until the stop time of the compressor 7 reaches the lower limit set time tL (approximately 5 minutes) (S80). . Thereafter, it is determined whether or not the stop time of the compressor 7 is equal to or longer than the set stop time tH (a minutes) set in advance (S90). At this time, since the stop time of the compressor 7 is short, the set temperature (6.0 ° C. ) Is read from the memory 12a and set (S150), the temperature detected by the temperature sensor 10 is input (S160), and whether or not the detected temperature has increased to the compressor operating temperature. Is determined (S170). When the detected temperature does not reach the compressor operating temperature, the process returns to S90, and the operations of S150 → S160 → S170 → S90 are repeated. In this case, since the stop time of the compressor 7 is equal to or longer than the set stop time tH (a minutes) before the temperature detected by the temperature sensor 10 reaches the compressor operating temperature, the compression at which the predetermined temperature (+ 1 ° C.) is set in S40. The temperature is added to the machine stop temperature (S100), the detected temperature of the temperature sensor 10 is input (S110), and it is determined whether the detected temperature is equal to or higher than the compressor stop temperature + predetermined temperature (S120). In this case, since the condition is satisfied, the compressor 7 is driven via the compressor drive unit 13 (S130), the measured stop time of the compressor 7 is cleared (S140), and the process returns to S30. As described above, the compressor 7 is driven based on the condition that the stop time of the compressor 7 is not less than the set stop time tH (a minutes) and the temperature detected by the temperature sensor 10 is not less than the compressor stop temperature + predetermined temperature.

  As described above, according to the present embodiment, the stop time of the compressor 7 is equal to or longer than the set stop time tH, and the detected temperature of the temperature sensor 10 is set to the compressor stop temperature set to the set temperature of the temperature adjustment unit 11. Since the compressor 7 is forcibly driven even when the detected temperature reaches the compressor operating temperature set to the set temperature when the predetermined temperature (+ 1 ° C.) or higher is exceeded, it is low Even if the temperature increase rate of the refrigerator compartment 3 becomes low due to the influence of the outside air temperature, it is possible to suppress the temperature increase of the freezer compartment 2 at an early stage, and even if the set temperature is changed, the freezer compartment is quicker 3 temperature can be stabilized.

It is side surface sectional drawing of the refrigerator in embodiment of this invention. It is a front view of the control box provided in the refrigerator of the embodiment. It is a schematic block block diagram which shows the control apparatus of the refrigerator of embodiment. It is a figure which shows allocation of the setting stop time of the compressor with respect to the setting temperature for every rank. It is a flowchart which shows operation | movement of the control apparatus of a refrigerator. It is a figure which shows the detection temperature of the temperature sensor at the time of the high temperature of outside air in the category "medium", and the temperature of the compressor, the drive state of the compressor, and the average temperature in the freezer compartment. It is a figure which shows the state of the detection temperature of the temperature sensor at the time of the outside air low temperature in a classification "weak", the drive state of a compressor, and the average temperature in a freezer compartment. It is a figure which shows the state of the detected temperature of the temperature sensor at the time of switching from the division "medium" to "weak" in the outside air temperature of 5 degreeC, the drive state of a compressor, and the average temperature in a freezer compartment.

Explanation of symbols

1 Refrigerator body, 2 Freezer room, 3 Refrigerated room, 4 Bulkhead, 5 Evaporator, 6 Blower,
7 compressor, 8 control box, 9 vegetable storage case, 10 temperature sensor,
11 Temperature control unit, 11a dial, 12 control unit, 12a memory, 13 compressor drive unit.

Claims (4)

The refrigerator body is divided into a freezer compartment and a refrigerator compartment,
A temperature sensor is installed in the refrigerator compartment,
The compressor operating temperature and the compressor stop temperature are respectively set according to the set temperature of the temperature control unit, and when the temperature detected by the temperature sensor rises to the compressor operating temperature, the compressor is driven and the temperature sensor is detected. temperature stops driving the compressor when reduced to compressors stop temperature,
At the stop time of the compressor is predetermined set stop time or more, and when the detected temperature of the temperature sensor is equal to or higher than a temperature obtained by adding a predetermined temperature to the compressor stop temperature, the detected temperature is set to the set temperature compression A control method for a refrigerator, wherein the compressor is forcibly driven even before the machine operating temperature is reached .   The method for controlling a refrigerator according to claim 1, wherein the predetermined set stop time is set according to a set temperature of the temperature adjusting unit. A temperature sensor installed in the refrigerator compartment among the freezer compartment and the refrigerator compartment formed by dividing the refrigerator body ;
A temperature control unit for setting the temperature in the refrigerator compartment ;
The compressor operating temperature and the compressor stop temperature are respectively set corresponding to the set temperatures of the temperature control unit, and when the temperature detected by the temperature sensor rises to the compressor operating temperature, the compressor is driven, and the temperature sensor Control means for stopping the drive of the compressor when the detected temperature falls to the compressor stop temperature,
Wherein, at the stop time of the compressor predetermined set stop time or more, and when said temperature detected by the temperature sensor is equal to or higher than a temperature obtained by adding a predetermined temperature to the compressor stop temperature, the detected temperature is the set temperature A compressor control device for forcibly driving the compressor even before reaching the compressor operating temperature set in (1).   4. The refrigerator control device according to claim 3, wherein the predetermined set stop time is set in accordance with a set temperature of a temperature adjusting unit.

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