JPS6335915B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerator, particularly a refrigerator with a thawing chamber, in which a dielectric heating device constituting a thawing chamber is disposed in the refrigerating chamber of the refrigerator-freezer.

Recently, with advances in refrigeration technology, the freezing of fresh foods for general household use has progressed, and the popularity of frozen foods has rapidly increased.

However, when defrosting the frozen food, the frozen food is usually stored in a refrigerator, but this has disadvantages such as the long time it takes to defrost the food. On the other hand, thawing can be done easily and relatively reliably by using a microwave oven, but depending on the shape of the frozen food, heating may be uneven and only a portion of the surface may be heated excessively, reducing the freshness of the food. There are problems such as:

In view of these points, the present invention incorporates a heating chamber of a dielectric heating device constituting a thawing chamber into a refrigeration chamber,
To provide a refrigerator with a thawing chamber that can easily and reliably thaw frozen food without impairing its freshness.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a refrigerator-freezer with a defrosting chamber, showing a state with the front door removed. In the case 1 of the refrigerator, there is a freezer compartment 3 in the upper part by a partition wall 2, and a refrigerator compartment 3 in the lower part. Each of the chambers 4 is divided into sections.
As shown in FIG. 2, a freezer compartment cooler 5 is disposed on the inner circumferential wall of the freezing compartment 3, and a refrigerator compartment cooler 5 is disposed inside the refrigerator compartment 4 near the upper rear wall. 7
is provided.

Incidentally, a dielectric heating device 8 constituting a thawing chamber is installed in the refrigerator compartment 4 on one side of its upper part. A heating chamber 10 is defined in the outer casing 9 of the dielectric heating device 8, and an opening/closing door 11 is provided at the front opening of the heating chamber 10, and the top wall 10a of the heating chamber 10 and the Control equipment 12 such as a timer is housed in the gap with the outer casing 9, and operation switches 13 and the like are provided on the front surface thereof.

On the other hand, the heating chamber 10 has one end sealed and the other end of a waveguide 14 opened, and the waveguide 14 penetrates the rear wall 1a of the refrigerator and protrudes from the outer surface of the refrigerator case 1. has been done. A recess 15 is formed on the outer surface of the rear wall 1a through which the waveguide 14 is inserted, and a high-frequency oscillation magnetron 16 is disposed within the recess 15.
A dome 16a of No. 6 is protruded into the waveguide 14, and the recess 15 is provided with a dome 16a of the magnetron 1.
A ventilated lid 17 covering the housing 6 is attached. Further, a portion of the outer casing 9 of the dielectric heating device 8 facing the refrigerator compartment cooler 5 and a heating chamber 10
A large number of punching holes 18 are formed in the peripheral wall of the device to serve as radio wave shielding ventilation holes.

In addition, a transformer (not shown) for a dielectric heating device and the like are arranged along with a compressor 19 and the like at the lower part of the rear outside of the refrigerator. Note that the reference numeral 20 in the figure is a shelf for placing food.

Therefore, in normal times, the foods stored in the freezer compartment 3 are frozen and preserved by the freezer compartment cooler 5, and the foods in the refrigerator compartment 4 are refrigerated by the refrigerator compartment cooler 7. . In this case, since the heating chamber 10 of the dielectric heating device 8 is communicated with the inside of the refrigerator compartment 4 through a large number of punched holes 18, the inside of the heating chamber 10 is also maintained at a low temperature, and one compartment is It can be used as a cold storage room.

By the way, when defrosting frozen food, when the frozen food is placed in the heating chamber 10 and the operation switch 13 is activated, the high frequency waves oscillated from the magnetron 16 pass through the waveguide 14 and thaw the frozen food in the heating chamber 10. The frozen food is irradiated with water to thaw the frozen food. On the other hand, at this time, the cold air in the refrigerator compartment 4 flows through the punching holes 1 in the heating chamber 10 as in normal times.
8, the food to be thawed is surrounded by a cold atmosphere, which suppresses the rise in surface temperature of the food, and the inside and surface of the food to be thawed are heated almost equally, resulting in uniform thawing. .

As explained above, in the present invention, the heating chamber for dielectric heating is disposed inside the refrigeration chamber, and the heating chamber is communicated with the refrigeration chamber, so that the heating chamber is normally used as a refrigeration chamber. On the other hand, when thawing frozen food, the food to be thawed is heated and thawed by high frequency in a cold atmosphere, so the inside and outside of the food to be thawed is uniformly and rapidly thawed, and the freshness of the food to be thawed is maintained. can be maintained. Furthermore, since the magnetron, etc., which is a high-temperature heating element, is located outside the refrigerator, and the food to be thawed is heated using high frequency waves, it is certain that the temperature inside the refrigerator compartment will rise due to the high temperature of the magnetron, etc. This has the effect of preventing

[Brief explanation of drawings]

FIG. 1 is a perspective view of the refrigerator of the present invention with the front door removed, and FIG. 2 is a longitudinal sectional side view of the refrigerator with a defrosting chamber of the present invention. 1...Housing, 3...Freezing room, 4...Refrigerating room, 7...Refrigerating room cooler, 8...Microwave oven, 10...Heating room, 1
4...Waveguide, 16...Magnetron, 18...Punching hole.

Claims (1)

[Claims] 1. A thawing chamber using dielectric heating is built into the refrigerator compartment so as to communicate with the refrigerator compartment through a radio wave shielding vent formed in a part of the peripheral wall, and the high frequency generating part of the dielectric heating device is connected to the outer surface of the refrigerator casing. 1. A refrigerator with a thawing chamber, characterized in that the high-frequency generating section and the thawing chamber are connected through a waveguide.