JPS62299684A - Refrigerator with high-frequency heating apparstus - 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 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a refrigerator equipped with a high-frequency heating device for defrosting frozen foods.

Conventional technology In recent years, with the addition of quick freezing functions to refrigerators,
Home freezing is becoming popular.

However, when it comes to thawing frozen foods, methods such as leaving them to thaw naturally, leaving them to thaw in the cold room of a refrigerator, and thawing them using a microwave oven have not been satisfactory in terms of thawing time and thawing quality.

Therefore, various refrigerators with high-frequency heating devices have been proposed that enable rapid defrosting by installing a high-frequency generator inside the refrigerator.

An example of the above-mentioned conventional refrigerator with a high-frequency heating device will be described below with reference to the drawings.

Figure 4 is a cross-sectional view of a conventional refrigerator with high-frequency heating device;
The figure shows a sectional view of the thawing chamber, and FIG. 6 shows a perspective view of the thawing chamber. Reference numeral 1 denotes a refrigerator, which has a refrigerator compartment 2 and a freezer compartment 3, and a thawing compartment 4 is installed within the refrigerator compartment 2. The thawing chamber 4
Radio waves are supplied to the refrigerator 1 from a high frequency generator 5 installed in a machine room at the bottom of the refrigerator 1 through a waveguide 6 and a lower power supply amount. Further, 8 is a fan that causes forced convection of cold air into the refrigerator compartment 2, the freezing compartment 3, and the thawing compartment 4.

The defrosting chamber 4 is composed of a metal box 9 that reflects radio waves, and a door 12 with a metal plate 10 for radio wave reflection attached to the inside and a radio wave absorber 11 such as ferrite embedded around the box. Further, 14a is a radio wave shielding ventilation hole (inflow side) provided on the back surface of the box body 9, through which cool air forcedly convected from the fan 8 flows in and radio waves are blocked, and 14b is provided at the front of the top surface of the box body 9. This is a radio wave shielding ventilation hole (outflow side) that allows the cold air that flows in to flow out and blocks radio waves.

The operation of the refrigerator with a high-frequency heating device configured as described above will be described below. First, the radio waves generated from the high frequency generator 5 propagate through the waveguide 6, are split into upper and lower parts midway, and are guided to the power supply lower, where the frozen food 1 in the thawing chamber 4 is guided.
3 to thaw the food. Then, the temperature of the frozen food 13 is made uniform by causing cold air to flow in through the radio wave shielding ventilation hole 14a1 and the radio wave shielding ventilation hole 14b and blowing it onto the frozen food 13.

Problems to be Solved by the Invention However, with the above configuration, the electric field distribution inside the thawing chamber is locally biased due to the flat structure of the thawing chamber, which has a large width relative to its height. There have been problems in that thawing varies depending on the position where the thawing is placed, and even when the thawing is placed in the center of the thawing chamber, thawing is uneven and the thawing quality is low.

The present invention has been developed in view of the above problems. The present invention provides a refrigerator equipped with a high-frequency heating device that can uniformize the electric field distribution in the defrosting chamber in a flat-shaped defrosting chamber structure and perform defrosting without unevenness.

Means for Solving the Problems In order to solve the above problems, the refrigerator with a high-frequency heating device of the present invention guides microwaves generated from a high-frequency generator to the thawing chamber and heats the microwaves on the top or bottom of the box in the thawing chamber. It is equipped with branched waveguides.

Effect The present invention has the above-described configuration, and the microwaves generated by the high-frequency generator are guided to the thawing chamber, and a plurality of power feeds provided on the wall of the thawing chamber are connected by waveguides branching at the top or bottom of the box of the thawing chamber. By supplying it to the thawing chamber through the opening, the electric field distribution inside the thawing chamber can be made uniform and thawing can be performed without unevenness.

EXAMPLE Hereinafter, a refrigerator with a high-frequency heating device according to an example of the present invention will be described with reference to the drawings, and the same components as those of the conventional one will be designated by the same numbers and detailed explanations thereof will be omitted.

FIG. 1 is a sectional view of a refrigerator with a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a sectional view of a thawing chamber, and FIG. 3 is a perspective view of the thawing chamber.

4 is a thawing chamber, and radio waves are supplied from a high frequency generator 5 through a waveguide 6 branched into two at the top of the thawing chamber 4 and two power supply lowers provided on the top wall of the thawing chamber 4. I am receiving it.

The operation of the refrigerator with a high-frequency heating device configured as described above will be explained below with reference to FIGS. 1, 2, and 3.

The microwaves generated by the high-frequency generator 6 propagate through the waveguide 6, are branched into two directions at the top of the thawing chamber 4, are guided to the power supply lower, and are repeatedly reflected within the thawing chamber 4 to produce various frozen foods. It is irradiated from a certain angle and thawed.

As described above, by providing a waveguide branching in two directions on the top surface of the thawing chamber, even in a thawing chamber structure with a flat shape and a large width relative to its height, the electric field distribution inside the thawing chamber can be made uniform and the thawing Can reduce unevenness.

Effects of the Invention As described above, the present invention provides a waveguide that guides microwaves generated from a high-frequency generator to a thawing chamber and branches at the top, bottom, or back of a box in the thawing chamber, thereby providing multiple power supply sources. Microwaves are supplied into the thawing chamber through the opening, promoting radio wave reflection within the thawing chamber, and uniformizing the electric field distribution. It is possible to eliminate uneven thawing that occurs even in cases where the thawing occurs, and improve the thawing quality.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a refrigerator with a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a sectional view of the thawing chamber shown in FIG. 1, and FIG. 3 is a perspective view of the thawing chamber shown in FIG. 1. Figure 4 is a sectional view of a conventional refrigerator, Figure 5 is a sectional view of the defrosting chamber shown in Figure 4, and Figure 6 is a sectional view of the defrosting chamber shown in Figure 4.
This figure is a perspective view of the thawing chamber shown in FIG. 4. 4... Thawing chamber, 6... High frequency generator, 6... Waveguide, 9... Box, 10.
...Metal plate, 11...Radio wave absorber, 12
・・・・・・Door body. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
-1 thawing chamber 5---Re-opening 1 6--Re-exposure Figure 1 9-Box 10--1 Metal plate 2-Figure 4-Defrosting chamber 6-11 Re-opening 9- -One box/2--One door Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A door with a metal box inside the refrigerator that is wide and wide relative to its height and made of metal to reflect radio waves, with a metal plate for radio wave reflection attached to the inside and a radio wave absorber such as ferrite embedded around it. A thawing chamber consisting of a body, a high frequency generator,
A refrigerator with a high-frequency heating device, comprising a waveguide that guides microwaves generated from the high-frequency generator to the thawing chamber and branches at the top or bottom surface of the box in the thawing chamber.