JPS58106376A - Refrigerator - 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 The present invention relates to a refrigeration system equipped with a high frequency heating device for thawing frozen foods.

In recent years, frozen foods have been making inroads into the food market, and with this, various types of so-called refrigerator-freezers with a freezing storage function have been developed for household refrigeration. There are two ways to thaw frozen food that has been stored in the freezer for cooking: one is to move it to a refrigerator or outside the refrigerator and thaw it naturally, and the other is to immediately thaw it using a high-frequency heating device such as a microwave oven. The former method requires a lot of time, the latter method requires a microwave oven that also has a purulent function, and is expensive, and there are currently no microwave ovens specifically designed for thawing on the market. It is.

Therefore, in the present invention, a high-frequency heating chamber for defrosting is incorporated in the refrigerator compartment of the refrigerator, and an A-frequency generator that generates high temperature is installed outside the refrigerator, and the high-frequency radio waves generated at the high-frequency generator heat the waveguide, and the inside of the waveguide is heated. The purpose is to prevent dew from getting on the surface.

Embodiments of the present invention will be described below based on the drawings.

ill is the refrigerated car body, and the inside of the car is divided into a cold room (4) and a cold room (4) on the upper side by a partition (21).
There is. Further, (5) is a machine room in the 111F section of the refrigerator body that houses the compressor (6) and the like. (71 is the freezer compartment (
31 is a freezer compartment door that closes the front opening, and (8) has a pocket (8M) on the inside, and is a refrigerator compartment door that closes the front opening of the refrigerator*+a+.

(9) is a container provided in the upper part of the refrigerator compartment 14) for storing vegetables and the like. ue is a cooler installed in the cooling l[a11 formed between the partition wall (2; The air is sent to the freezer compartment (31) by an electric blower 13 through a duct, and is also blown to the refrigerator 41 from a cold air outlet α- having a damper device (not shown) to cool the inside of the car. is an ice making device installed near the cold air outlet of duct I.

Now, as will be explained in detail later, d61 is a thawing chamber that serves as a frequency heating chamber that thaws frozen foods using high-frequency radio waves, and is a refrigerator.
It is arranged in front of the cold air discharge port I at the upper part of iii [41], and has a radio wave stirring chamber α in the lower part. Ura is l
The magnetron oscillation unit included in the 4-wave generator is a high-frequency radio wave oscillation unit, and the refrigerator main body is provided at a position corresponding to the radio stirring chamber (1η) behind the defrosting chamber 11a on the outside of the back wall (1) of J. uIJ is the power supply device for the magnetron oscillation section J81, and is fixed to the compressor stand in the machine Toyama).The magnetron oscillation section J81 and the power supply device (1! The magnetron oscillation section J8 and the radio wave stirring chamber d7) are a waveguide (2) provided through the back wall (1a) of the refrigerator body.
) are combined. ■ is a fan for cooling the magnetron oscillation unit J8, which is inside the wind tunnel member (to) which is installed so as to extend to the inside of the magnetron oscillation unit 1 or the refrigerator compartment (4) and surround the waveguide device. will be stored in. Also, Makoto is a condenser that is housed inside the refrigerator main body + exhaust duct on the back.

Now, FIG. 2 shows an exploded perspective view of the defrosting chamber stop.

The mirror is a cavity made of a radio wave reflecting material such as metal and has an opening on the front, through which an inner plate made of resin with a low dielectric constant with an open top is inserted. be done. There is a thawing chamber including a handle in the front of the inner plate (to).
is installed.

In FIG. 3, a state is shown in which the inner plate (1) on which frozen food is placed is housed in the cavity (1). (
2) is the front plate of the thawing chamber door, ■ is a choke dielectric to prevent radio wave leakage, and C is provided around the entire circumference of the thawing chamber door.
There is. (to) is a door punching plate that reflects C radio waves at the front of the cavity (to). A large number of cold air circulation holes (26 holes) are drilled in the rear wall of the cavity (toward) at a position corresponding to the cold air outlet I and in the front part of the ceiling wall. A through hole (28aJ) is bored at a position corresponding to the cold air circulation hole (268).Thereby, the cold air discharged into the refrigerator compartment (4) is directed from the rear to the thawing chamber ue as shown by the arrow in Fig. 2. The cold air circulation hole (26 m) is a hole with a diameter sufficiently smaller than 1/10 of the wavelength of the high-frequency radio wave used for thawing. Since the hole exhibits a very large impedance to radio waves of that frequency, there is very little leakage of 1lliIIIl wave radio waves from the cold air circulation hole (26 m).

The bottom and side surfaces of the radio wave stirring chamber dη are provided with a plurality of cold air circulation holes (holes (17) having the same effect as the above-mentioned cold air ventilation holes (26@J), and inside are driven by a motor (to) to reflect radio waves. The Star Laugh Fan is made of metal and is stored in the refrigerator compartment.
4) Perform cold air stirring. On the other hand, magnetron oscillation section 1
The high-frequency radio waves oscillated by 81 are star rahufun (to)
It is reflected and stirred into the cavity as shown by the bent arrow, thereby thawing the frozen food inside the cavity.

The waveguide has a dielectric section (21 m) extending directly rearward from the radio stirring chamber entrance η and a power feeding section (21 m) extending from the magnetron oscillation section δ, which can be inserted and removed at the choke joint (to). Here, a through hole is formed in the back wall (1 hole) of the refrigerated vehicle body Ill, into which the extension part (23) of the wind tunnel member @ is fitted, and the dielectric of the waveguide a is The part (21a) is inserted into the wind tunnel member through the through hole (to) at the front end of the extension part (23aJ).The wind tunnel member (to) extends into the refrigerator compartment (4) and connects the waveguide (to). 2), and the opening on the αη side of the radio wave stirring chamber of the waveguide is closed with a cover made of vinyl chloride resin, etc. that is transparent to high frequency radio waves, and cold air inside the waveguide is closed. A plurality of through-holes are formed in the outside portion of the wind tunnel member β to prevent the air from entering the vehicle.

If the magnetron oscillator J8 is installed in this way on the outside of the refrigerator behind the radio wave agitation*u'rI of the defrosting chamber a8, the waveguide circuit can be kept at the shortest length, and since it can be connected in a straight line, the radio wave attenuation can be minimized. Also, since there is no need to bend it in the middle, the circuit calculation becomes easier.

When defrosting starts with this configuration, the magnetron oscillation section starts operating and the cooling fan also starts rotating. At this time, the temperature of the 7gnetron oscillator rose to about 29 degrees Celsius, and the air inside the wind tunnel member became even warmer.
The cooling fan (2) circulates through the extension (23) and provides ventilation through the through holes.

This warms the waveguide (2) while the waveguide (2)
The opening on the opposite side of the radio wave stirring '11α is closed with a cover (toward) and has a C angle, so no cold air can enter the waveguide.The temperature of the air inside the waveguide rises moderately. It turns out.

Here, since the waveguide (2) is cooled by the cold air in the refrigerator compartment (4), dew will adhere to the inner wall of the waveguide, especially if the side of the radio wave stirring chamber is open. The water droplets absorb the high-frequency radio waves from the C magnetron oscillating section 18, reducing the thawing efficiency.However, in the present invention, moisture enters the waveguide and dew forms. There's nothing to do.

Here, the temperature inside the wind tunnel member (c) rises, so the extension part (2)
There may be a temperature effect on the inside of the refrigerator M(4) from 3, but if a resin with low thermal conductivity is used as the material for the wind tunnel member, the temperature effect on the inside of the refrigerator room +41 can be almost ignored. become.

The present invention is constructed as described above, and a high-frequency heating chamber is provided in the cold room of the refrigerator having a freezer compartment and a refrigerator compartment. In a refrigerated fIIi refrigerator in which high-frequency radio waves from an oscillating section are guided to a high-frequency heating chamber through a waveguide to defrost frozen foods in the heating chamber, the high-frequency radio wave oscillating section is connected to the back of the refrigerator car. A wind tunnel member is provided at the back of the high frequency heating chamber on the outside of the wall and houses the high frequency radio wave oscillating part and the oscillating part cooling fan, and the wind tunnel member penetrates through the back wall of the refrigerator and also has a waveguide. 8) The high-frequency heating side opening of the waveguide was closed with a temporary cover, so the inside of the waveguide was warmed by the heat generated by the high-frequency radio wave oscillating part, and the inside of the waveguide was heated by the heat generated by the high-frequency radio wave oscillating part. Since cold air does not enter the waveguide, condensation on the inner wall of the waveguide can be prevented, and the resulting IIibtg 4-wave radio waves will not be attenuated (therefore, the thawing efficiency will be improved. Also, the humidity inside the waveguide from outside the refrigerator can be prevented). There is no need to airtightly seal the high-frequency radio wave oscillating part to prevent the intrusion of radio waves, and the structure is simple.Also, since the waveguide is short, radio wave attenuation can be further prevented, making it easier to calculate circuits. It also makes it easier.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention; FIG. 1 is a cut-away Tri diagram of the refrigeration rate, FIG. 2 is an exploded perspective view of the thawing chamber, and FIG. 3 is an enlarged side sectional view of the same. (3)... Freezer room, (4+... Refrigerator room, (161.
... Thawing chamber, side... Magnetron oscillation section, ■... Waveguide, ■... Cooling fan, (c)... Wind tunnel member.

Claims (1)

[Claims] 1. A l1bN4 wave generator installed outside the refrigerator car having a freezer compartment and a refrigerator compartment, a high-frequency heating chamber installed inside the refrigerator compartment, and an I1bN4 wave generator included in the frequency generator outside the back wall of the refrigerator. a high-frequency radio wave oscillation section provided at a position facing the back of the high-frequency heating chamber, a waveguide that guides radio waves from the high-frequency radio wave oscillation section to the high-frequency heating chamber, and the high-frequency heating 3111I of the waveguide. ! l A cover made of a high-frequency radio wave transmitting member that closes the opening, a cooling fan device for the high-frequency radio wave oscillating section, and a wind tunnel member having an internal cavity that houses the high-frequency radio wave oscillating section and the cooling fan device therein. The refrigerator* is configured such that the member penetrates the back wall of the refrigerator and also surrounds the waveguide.