JPS6199088A - Refrigerator with high-frequency thawing device - Google Patents

Abstract

(57) [Summary] 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 refrigerator equipped with a high-frequency thawing device for thawing frozen foods.

Conventional configuration and its problems Frozen foods are being used more frequently in households, and many refrigerator-freezers are being used. In addition, home freezing has recently become popular as refrigerators have been equipped with quick freezing functions.

However, when it comes to thawing frozen foods, natural thawing (
Thawing in water (natural thawing), water thawing (microwave oven with water thawing included), but these methods were not satisfactory in terms of thawing time and thawing quality.

Therefore, a refrigerator with a high-frequency thawing device has been proposed that enables rapid defrosting by installing a high-frequency thawing device using a semiconductor inside the refrigerator.

As shown in Fig. 4, a conventional refrigerator with a high frequency generator 1
' has a refrigerator compartment 2' and a freezing compartment 3'.

A thawing chamber 4' for frozen foods is provided in the refrigerator chamber 2'.

A high frequency generator 5' is placed above the thawing chamber 4',
Heat radiation fins 6' were provided inside the refrigerator compartment 2'. Here, the high frequency generator 6' is installed above the thawing chamber 4' in order to prevent high frequency transmission loss. The antenna 7' emits high frequency waves to thaw the frozen food. Therefore, during the thawing time, the heat dissipation fins 6
There was a problem in that the temperature of the refrigerator compartment 2' locally increased due to heat radiation from the refrigerator compartment 2'.

OBJECTS OF THE INVENTION An object of the present invention is to provide a refrigerator with a high-frequency defrosting device that is not affected by heat radiation to the refrigerator compartment.

Structure of the Invention In order to achieve this object, the present invention provides a heat dissipation plate of a high frequency generator in close contact with a thawing chamber.

The heat that was conventionally radiated to the refrigerator compartment is now effectively used as an auxiliary heat source for the defrosting compartment.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1st
In Figures 1 to 3, reference numeral 1 denotes a refrigerator with a high-frequency thawing device, which has a refrigerator compartment 2 and a freezer compartment 3. A metal thawing compartment 4 is provided in the refrigerator compartment 2, and a semiconductor is used in the upper part of the thawing compartment 4. A high frequency generator 5 is arranged. Then, the heat sink 8 (electrically insulated) of the high frequency generator 6 is attached to the thawing chamber 4.
It is in close contact with the surface over a sufficiently large area. Power is supplied to the high frequency generator 6 from a power supply circuit 9 installed in a mechanism room at the bottom of the refrigerator 1. The power supply circuit 9 also serves as a power supply for a control circuit 1o that sets the operating time of the high frequency generator 5. Reference numeral 11 denotes a high-frequency scattering star fan made of metal, which scatters high-frequency waves radiated from the antenna 7 connected to the output end of the high-frequency generator 5 into the thawing chamber 4. The antenna 7 is covered with a high-frequency transparent resin cap 12 from the viewpoint of environmental resistance and food hygiene.

The defrosting chamber 4 is made of metal and reflects radio waves, and the frozen product 1 is placed in front of it.
An electric circuit diagram of a refrigerator equipped with a high-frequency defrosting device, which is provided with a door 14 that takes radio wave protection into consideration, will be described. 16 is a cooling circuit for the refrigerator body, 16 is a commercial AC power source, and 17 is an internal temperature regulator, which is closed when the internal temperature falls below a predetermined temperature.

18 is an MR reshinro that switches between cooling operation and defrosting operation, and its normally open contact is connected to a defrosting heater 21 of the cooler 2o via a bimetal thermostat 19, and its normally closed contact is connected to a compressor 22. A fan 23 for forcing cool air into the refrigerator is connected in parallel. Reference numeral 24 denotes a high frequency generation circuit, which supplies power from a power supply circuit 9 including a power transformer to a high frequency generation device 6 using a semiconductor, a star fan motor 25, and a control circuit 1o that controls the operating time of the high frequency generation device, etc. ing.

At the time of defrosting, the high frequency generator 6 and the stirrer fan 11 operate during the defrosting time set by the control path 10,
A high frequency wave is radiated from an antenna 7 connected to the output end of the high frequency generator 6 and irradiated onto the frozen food 13. Then, water molecules contained in the frozen food 13 are imaged by the high frequency, and the frozen food 13 is thawed from the inside due to the frictional heat. At this time, the high frequency generator 6 generates heat, but since the heat sink 8 of the high frequency generator 6 is in close contact with the surface of the thawing chamber 4 over a sufficiently wide area, this heat is transferred from the heat sink 8 to the top surface of the metal thawing chamber 4. The entire thawing chamber 4 is heated through the thawing chamber 4, and the air inside the thawing chamber 4 is heated to serve as an auxiliary heat source for high-frequency thawing.

As described above, by bringing the heat dissipation plate 8 into close contact with the thawing chamber 4, the heat generated by the high-frequency generator 5, which conventionally caused the problem of radiating heat to the refrigerator compartment 2 and locally increasing the temperature inside the refrigerator, can be solved. Since the chamber 4 is made of metal and has good heat conductivity, the heat of the high-frequency generator 5 can be dissipated more efficiently, so the high-frequency generator 5 can be used, thereby shortening the defrosting time and saving power.

Effects of the Invention As is clear from the above description, the present invention comprises a metal thawing chamber provided in a refrigerator, a high frequency generator in which a heat sink is placed in close contact with the thawing chamber, and a high frequency generator. Since it is composed of a control circuit that controls operating time, etc., and a power supply circuit, the defrosting time can be shortened, power can be saved, and the reliability of the high frequency generator can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a thawing chamber showing one embodiment of the present invention;
The figure is a sectional view of a refrigerator to which the same figure 1 is applied, FIG. 3 is an electric circuit diagram of the same figure 1, and FIG. 4 is a sectional view of a conventional refrigerator equipped with a high frequency defrosting device. 2...Refrigerating room, 4...Defrosting room, 6...
...High frequency thawing device, 9...Power supply circuit, 1
0...Control circuit. Figure 1 Figure 2 Figure 3 O Figure 4 3'

Claims (1)

[Claims] It consists of a metal thawing chamber provided in a refrigerator, a high frequency generator with a heat sink placed in close contact with the thawing chamber, a control circuit for controlling the operating time of the high frequency generator, and a power supply circuit. Refrigerator with high frequency thawing device.