JPS6365283A - Refrigerator with thawing chamber - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a technology for a thawing room refrigerator that defrosts food using a heat source.

BACKGROUND OF THE INVENTION In recent years, the frequency of using frozen foods at home has increased to 2/2, and many refrigerator-freezers have been used. Frozen foods or foods frozen at home must be thawed and cooked in some way. There are various methods of defrosting, but microwave ovens are often used because they can defrost food quickly, and recently refrigerators are being developed that have a defrosting chamber inside them that defrosts food using a heat source such as high frequency.

An example of the conventional refrigerator with a defrosting chamber mentioned above will be described below with reference to the drawings.

FIGS. 3 and 4 show a sectional view and an electric circuit diagram of a conventional refrigerator with a defrosting chamber. In FIG. 3 and FIG. 4, 1 is a refrigerator main body. 2 is a compressor that compresses the refrigerant in the refrigeration cycle. A condenser 3 condenses the refrigerant compressed by the compressor 2 at a predetermined temperature. An evaporator 4 evaporates the refrigerant liquefied in the condenser 3 at a predetermined temperature. 6 is an electric blower that blows cold air from the evaporator 4 into the refrigerator. 6
is a freezer compartment, and 7 is a refrigerator compartment. A heat source 8 (hereinafter referred to as magnetron) consisting of a magnetron oscillates a predetermined high frequency. 9 is a waveguide that guides the high frequency radio waves generated by the magnetron 8 to the thawing chamber 1o. 1o is a thawing chamber provided in the refrigerator compartment 7.

11 is a magnetron 8 that measures the thawing time in the thawing chamber 10;
This is a timer that controls the operating time. Reference numeral 12 indicates a most temperature control unit provided in the freezer compartment 6, which controls the temperature of the freezer compartment 6 by turning the compressor 2 and the electric blower 5 ON and OFF. 13 is a damper thermostat provided in the refrigerator compartment 7, and controls the temperature of the refrigerator compartment 6 and the thawing compartment 1o by using the wind 111-. 14 is timer 11
The timer motor 16 inside is a switch that is linked to the timer motor 14 and performs ON-OFF control of the 7 magnetrons 8. 16 is a defrosting operation switch.

The operation of the refrigerator with a defrosting chamber configured as above will be explained below.

Compressor 2. Condenser 3. A refrigeration cycle constituted by an evaporator 4 and an electric blower 5. Thermostat12. The damper thermostat 13 controls the freezing compartment 6. Refrigerator room7. The thawing chamber 1o is cooled to a predetermined temperature. When thawing frozen food, place the food in the thawing chamber 1o and set the timer to 1.
1 to a time appropriate for the food, and turning on the thawing operation switch 16, the food is thawed using high-frequency radio waves guided from the magnetron 8 to the thawing chamber 10 by the waveguide 9, and the timer motor 14 starts to defrost the food after the set time has elapsed. , interlocked switches 16. Then, the defrosting operation switch 16 is turned OFF, and defrosting ends.

Problems to be Solved by the Invention However, in the above configuration, the thermostat 1
If thawing is performed when 2 is OFF, no cold air will enter the thawing chamber 10 from the damper thermostat 13, and
The temperature of the item to be thawed tends to be uneven, and timer 1
Depending on the length of time the thawing process takes, the thawing may be performed more than necessary, which may result in overloading of the material to be thawed. When the food to be thawed rises abnormally, moisture evaporating from the food causes abnormal frost formation on the evaporator 4. At the same time, there is a problem that an appropriate temperature inside the thawing chamber cannot be maintained due to the thermal influence on the outside surroundings of the thawing chamber.

In view of the above-mentioned problems, the present invention provides a refrigerator with a thawing chamber that reduces the temperature unevenness of objects to be thawed, and prevents abnormal frost formation on the evaporator due to excessive rise of objects to be thawed and heat influence on the surroundings outside the thawing chamber. This is what we provide.

Means for Solving the Problems In order to solve the above problems, the present invention provides a refrigerator with a freezer compartment that controls the thawing time in the thawing compartment and cools the refrigerator compartment at the same time as the timer operates. a temperature sensor that detects a temperature in the thawing chamber and, when the temperature reaches a predetermined temperature, terminates the operation of the thawing chamber with priority over the timer; ? It is equipped with a control means that operates the cooling system at the same time as the operation of (.

According to the above-described configuration, the cooling system of the present invention operates simultaneously with the start of Wr freezing, and the cold air can enter the thawing chamber -\, thereby suppressing temperature unevenness of the object to be thawed. /C f'R in the freezing chamber If the timer that controls the opening time during freezing is operating, the temperature of the object to be thawed rises and the temperature inside the thawing chamber reaches a predetermined level or higher. The temperature sensor stops the magnetron power supply and activates the cooling system before the thawing material rises abnormally. This will prevent abnormal frost formation on the outside of the defrosting room and heat effects on the surrounding area outside the defrosting room.

EXAMPLE Hereinafter, a refrigerator with a defrosting chamber according to an example of the present invention will be described with reference to the drawings. Note that the same configurations as those of the prior art are given the same numbers and detailed explanation thereof will be omitted.

FIG. 1 shows a cross section of a refrigerator with a defrosting chamber according to the present invention, and FIG. 2 shows its electric circuit.

In FIG. 1, reference numeral 17 is a temperature sensor provided in the thawing chamber 10.

Next, in FIG. 2 showing an electric circuit, 12 is a thermostat, compressor 2. It controls ON-OFF of the electric blower 5, and consists of a switch section 12a and a solenoid section 12b. The thermostat 12 detects and controls the temperature of the freezer compartment 6, but when the solenoid section 12b is energized, it forcibly closes the switch section 12a and then resumes normal operation. ing. Reference numeral 17 is a temperature sensor, and when the temperature inside the defrosting chamber is lower than a predetermined temperature, contacts 17a and 17c are closed;
a and contact 17b are closed. 18 is a switch linked with the timer motor 14, and controls energization to the solenoid section 12b of the thermostat 12.

The control means for operating the cooling system simultaneously with the timer operation includes a timer motor 14, a switch 18 interlocked with the timer motor, and a solenoid section 12b whose energization is controlled by the switch 18. It's a trench.
A control stage for activating the cooling system simultaneously with the activation of the temperature sensor includes a temperature sensor 17 and a contact point 1 of said temperature sensor.
7b and a solenoid part 12b connected in series.

The operation of the refrigerator with a defrosting chamber configured as described above will be described below with reference to FIGS. 1 and 2.

When thawing frozen food, place the food in the thawing chamber 10,
Defrosting is started by turning on the timer 11 at an appropriate time and turning on the defrosting operation switch 16. At the same time, when the thermostat 12 is in the OFF state, the switch 18 interlocked with the timer motor 14 is closed, the solenoid part 12b of the thermostat 12 is energized, the switch part 12a is closed, and the compressor 2. The electric blower 5 is operated and the damper thermostat 13 is used to blow the thawing chamber 1o.
During thawing, cold air can enter into thawing chamber 1.
When the temperature within 0 becomes relatively high, cold air can enter as appropriate to suppress unevenness in the temperature of the object to be thawed.

Next, prevention of abnormal over-rise of the object to be thawed will be explained.

When the timer 11 is set for an appropriate thawing time according to the food, the temperature sensor 17 in the thawing chamber 10 maintains the temperature below the predetermined temperature, the contacts 17a and 17c are open, and the timer motor 14 operates for the predetermined time. After that, the linked switch 16
The magnetron 8 is opened, the magnetron 8 is turned off, and the defrosting operation switch 16 is also turned off to complete defrosting. However, if the time of the timer 11 is set longer than necessary, the timer motor 14 is operated by turning on the defrosting operation switch 16, and the switch 16 linked thereto is closed. At this time, the temperature sensor 17 indicates that the inside of the thawing chamber 1o has been properly cooled and is below the predetermined temperature, so the contacts 17a and 17c are in a closed state, and the magnetron 8 is activated. Then, when thawing is performed and the object to be thawed exceeds the proper thawing state and the temperature inside the thawing chamber 1o rises and reaches a predetermined temperature of -1-, the contacts 17a and 17C of the temperature sensor 17 are opened, and the contacts 17a and 17C are opened. The contact 17b is opened.

1 Even when the retimer motor 14 is operating, the temperature detector 17 installed in the thawing chamber 1o detects an abnormal temperature rise of the object to be thawed, and the magnetron 8 stops operating and thawing is stopped, and the contact 17a The contact 17b is closed and the solenoid portion 12b is energized. Therefore, the thermostat 12 is closed, the compressor 2 and the electric blower 5 are operated, cooling cartwheel is carried out, and the cold air from the evaporator 4 is guided to the thawing chamber 1o through the damper thermostat 13 to a predetermined temperature 1.
cooled down. Note that after the solenoid 12b is energized and the thermostat 12 is forcibly closed, the normal thermostat operation is performed.

As described above, according to this embodiment, there is provided a timer that controls the thawing time in the thawing chamber, a control means that operates the cooling system simultaneously with the operation of the timer, and a temperature that detects the temperature inside the thawing chamber and reaches a predetermined temperature or higher. a temperature sensor that gives priority to the operation of the thawing chamber over the timer and terminates the operation if the defrosting chamber is
Since the device is equipped with a control means that operates the cooling system at the same time as the operation of the temperature sensor, the cooling system operates at the same time as the start of thawing, and cold air can enter the thawing chamber, and the object to be thawed can be cooled. In addition, when the timer that controls the thawing time in the thawing chamber is operating, the temperature of the thawing object rises and the temperature inside the thawing chamber reaches a predetermined level, the operation of the thawing chamber is stopped. The temperature sensor, which gives priority to the timer and terminates the process, shuts down the power to the magnetron and activates the cooling system before the thawing material rises abnormally, thereby preventing the evaporator from rising due to the thawing material overheating. It is possible to prevent abnormal frost formation and thawing of heat from the surrounding area outside the room. Although the embodiments have been described using a magnetron as a heat source, the same effect can be obtained even if a heater is used.

Effects of the Invention As described above, the present invention includes a timer that controls the freezing time of each cassette in the thawing chamber, a control means that operates the cooling system simultaneously with the operation of the timer, and a control means that detects the temperature inside the thawing chamber and adjusts the temperature to a predetermined temperature. By providing a temperature sensor that gives priority to the operation of the thawing chamber and terminates the operation of the thawing chamber when the temperature exceeds the timer, and a control means that operates a cooling system at the same time as the operation of the temperature sensor, the thawing chamber is cooled at the same time as the thawing starts. When the system is activated, cold air can enter the thawing chamber, suppressing uneven temperatures of the thawed items, and the timer that controls the thawing time in the thawing chamber is activated so that the temperature of the thawed items increases. When the temperature inside the freezing chamber reaches a predetermined temperature, the temperature sensor gives priority to the operation of the thawing chamber and terminates it over the timer. By turning off the power supply and activating the cooling system, it is possible to prevent abnormal frost formation on the evaporator due to excessive rise in the thawing material and thermal effects on the surroundings outside the thawing room.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a refrigerator with a defrosting chamber according to an embodiment of the present invention, Fig. 2 is an electrical circuit diagram of the main part of Fig. This figure is an electrical circuit diagram of the main part of FIG. 3. 7... Refrigerator room, 1o... Thawing room, 11...
...Timer, 17...Temperature detector. Name of agent: Patent attorney Toshio Nakao and 1 other person1-
Refrigerator room 11-1 Temperature & indicator Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] a refrigeration chamber; a thawing chamber for thawing using a magnetron in the refrigeration chamber; a timer for controlling thawing time in the thawing chamber; and a control means for operating a cooling system for cooling the refrigeration chamber at the same time as the timer is activated. , a temperature sensor that detects the temperature in the thawing chamber and, when the temperature reaches a predetermined temperature or higher, terminates the operation of the thawing chamber with priority over the timer; and a control that operates a cooling system simultaneously with the operation of the temperature sensor. A refrigerator with a defrosting chamber characterized by comprising means.