JPH0435668B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a refrigerator or the like having a rapid cooling function, and particularly relates to rapid cooling control during automatic defrosting of a refrigerator.

Configuration of conventional example and its problems As shown in Fig. 1, in the conventional rapid cooling control having a rapid cooling function, a manual time switch 1 is operated and a rapid cooling timer motor (quenching timer means) 2 is operated until a predetermined time is reached. At the same time, the cooling chamber dedicated blower motor 3 rotates. When a certain period of time has elapsed, time switch 1 turns OFF and the process ends. A thermostat 4 detects the temperature inside the refrigerator and controls the compressor 5. Reference numeral 6 denotes a defrosting timer, which is composed of a timer motor 6a and a time switch 6b.The timer motor 6a integrates the operating time of the compressor 5, and operates the time switch 6b when a predetermined time elapses. The defrost heater 7 is energized. 8 is a defrosting completion detection switch. A switch 6c, which operates in conjunction with the defrosting timer switch 6b, is connected in series with the rapid cooling fan motor 3, and turns off the rapid cooling fan motor 3 during defrosting. With the above configuration, even though the internal temperature is low in the vicinity of the quenching chamber, the quenching action stops, resulting in a long quenching time, and after defrosting, the warm cold air after defrosting must be stirred. It had some disadvantages as well.

OBJECTS OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks, shorten the quenching time, and prevent food temperature rise.

Structure of the Invention In order to achieve this object, the refrigerator of the present invention detects the temperature near the cooler, opens the contact when the temperature is higher than the set value set lower than the contact opening temperature of the defrost detection switch, and opens the contact when the temperature is lower than the contact opening temperature of the defrost detection switch. Close the contact point of time,
By installing a temperature switch that stops and starts the blower, the temperature switch that stops the blower when the temperature of the cooler rises above the predetermined value after the defrosting device of the cooler operates to defrost is installed. This prevents the disadvantages of cooling and provides a rapid cooling effect.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Fig. 2, 1 is a time switch;
Can be turned on and off manually. Also, after setting the time switch, the quenching timer motor 2 operates,
The blower motor 3 dedicated to rapid cooling also operates for a predetermined time, and when the predetermined time elapses, the time switch 1 is turned off. A thermostat 4 detects the temperature inside the refrigerator and controls the compressor 5. A defrost timer 6 integrates the operating time of the compressor, and when a predetermined time elapses, a timer motor 6a operates a time switch 6b, energizes the defrost heater 7, and starts defrosting. Reference numeral 8 denotes a defrost detection switch, which stops energizing the defrost heater 7 when the temperature reaches a certain level. On the other hand, the defrost timer 6 starts after a certain period of time.
The cooling operation is started again, and the compressor 5 is energized. Reference numeral 9 denotes a temperature switch connected in series with the quenching fan motor 3 and installed at or near the defrost detection switch 8, and is set to always turn off earlier than the defrost detection switch 8. . For example, if the defrost detection switch 8 is OFF when the cooler temperature is 13°C, the temperature switch 9 is set to be OFF when the cooler temperature is 6°C.

In the above configuration, the rapid cooling fan motor 3 does not turn off immediately after defrosting is started, and if the cooler has not cooled down, it does not return immediately even after defrosting is completed.

Therefore, even if defrosting is activated during the set rapid cooling time, the time is shortened because the food is rapidly cooled, and there is no need to blow warm cold air after defrosting, resulting in a remarkable effect in rapidly cooling the food. Further, not only can it be sealed integrally with the defrost detection switch 8, but also the time switch 6b can be a simple mechanism.

Effects of the Invention As is clear from the above description, the refrigerator of the present invention detects the temperature near the cooler, and opens the contact when the temperature rises to a set value that is lower than the contact opening/closing temperature of the defrost detection switch. By providing a temperature switch that closes the contact and stops and operates the blower when the temperature drops below the set value, the temperature switch will close the contact and stop and operate the blower, so even if the defrost device of the cooler starts defrosting operation during rapid cooling operation, the cooler If the temperature in the vicinity is below the set value of the temperature switch, the blower can be operated to promote the rapid cooling effect, which minimizes the interruption time of the rapid cooling operation due to the defrosting operation, resulting in an efficient rapid cooling effect. can get. In addition, even after the defrosting operation is finished, the blower will not operate until the temperature near the cooler falls below the temperature switch set value, so the warm air after the defrosting operation is stirred and the temperature of the stored food is prevented from rising. be able to.

[Brief explanation of drawings]

FIG. 1 is a conventional rapid cooling control circuit diagram, and FIG. 2 is a circuit diagram of an embodiment of the present invention. 1...Time switch, 2...Quick cooling timer motor, 3...Quick cooling dedicated blower motor, 6...Defrost timer, 7...Defrost heater, 4...Thermostat, 8...Defrost detection switch, 9...Temperature switch.

Claims (1)

[Claims] 1. A refrigerator compartment, a freezer compartment, a cooler, a defroster device having a defrost detection switch that detects the temperature near the cooler, a quenching chamber provided in the refrigerator compartment, and a quenching unit that rapidly cools the cold air in the refrigerator compartment. It has an air blower introduced into the room, a rapid cooling timer means for operating the air blower for a certain period of time, and a temperature switch that detects the temperature near the cooler and operates and stops the air blower, and the contact opening temperature of the temperature switch is , the temperature is set lower than the contact opening temperature of a defrost detection switch of the defrost device, and the quenching timer means opens the contact when the temperature detected by the temperature switch is equal to or higher than the contact opening temperature of the temperature switch during the quenching operation. The refrigerator stops the blower and operates the blower by closing the contact when the temperature detected by the temperature switch is lower than the temperature at which the contact of the temperature switch is opened.