JPS5940433B2 - High frequency thawing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency thawing device for frozen foods, and is intended to improve the thawing ability by making the device more compact and improving air flow.

A front cross-sectional view of a conventional high-frequency thawing device is shown in FIG.

The thawing device has a thawing chamber 3 in an outer casing 1 for storing an object 2 to be thawed such as a frozen product, and a lower electrode configured with a predetermined gap provided below the object 2 to be thawed is used as a high voltage side electrode 4. A ground side electrode 5 is formed on the top of the object 2 to be thawed, and is covered with a protective cover 6.

During operation, the ground side electrode 5 is used in contact with or in close proximity to the object 2 to be thawed.

The high-voltage side electrode 4 is insulated from the mounting plate 7 for the object 2 to be thawed or the wall surface of the thawing chamber 3 made of a grounded conductive material, and has a predetermined gap to ensure an optimal thawing state. There is.

A ventilation duct 8 is formed on both side walls of the thawing chamber 30, and includes an intake duct 9 and an exhaust duct 10.

A ventilation duct 8 is provided with a cooling evaporator 11 and a blower 12 to send cold air into the thawing chamber 3 to thaw the object 2 while cooling it.

A condenser 13, a compressor 14, etc. that constitute an external unit of the refrigerator are provided outside the ventilation duct 8.

Reference numeral 15 is a drive motor for raising and lowering the earth side electrode 5, and 16 is a power supply line for the earth side electrode 5.

1T is an inner box forming a thawing chamber 3, and the outside is covered with the duct 8.

Reference numeral 18 denotes a high frequency oscillation section, which is connected to the high voltage side electrode 4 and the feed line 21, and the high frequency oscillation section 18 is connected to the high voltage power source 19 and the feed line 20.
It is also connected.

In the above conventional structure, the inner box 17 forming the thawing chamber 3
In a structure in which external force nine ventilation ducts 8 are formed from both side surfaces or the rear surface of the thawing chamber 3 and cold air is sent from the side wall surface of the thawing chamber 3,
The size of the thawing chamber 3 (width dimension in the figure) becomes larger outwardly, and the size of the entire thawing device inevitably becomes large, making it impossible to downsize.

Furthermore, there are ducts (wind trunks) on both sides and above, and their volume is large, requiring a larger capacity of the refrigerator to lower the cold air to the required temperature. Due to the long distance between the wind barrel and the exhaust side, the p heat loss from duct) 8 was also significant, necessitating the need for a refrigerator with even greater capacity.

As a result, the cost is high, and the structure of the entire refrigerator becomes larger, which in turn increases the size of the thawing device as a whole.

Further, in the configuration shown in the figure, water, dirt, etc. are likely to enter the wind barrel from inside the thawing chamber 3, and even if it becomes unsanitary, cleaning etc. cannot be done easily.

The present invention solves these conventional problems, and will be described below with reference to FIGS. 2 and 3.

The same parts as in FIG. 1 are given the same reference numerals.

The device of the present invention includes a thawing chamber 3 for storing and thawing an object 2 such as a frozen product in an outer casing, and a high voltage side electrode 4 with a predetermined gap below the object 2 to be thawed. There is a ground side electrode 5 on the top that moves up and down to contact or approach the object 2 to be thawed, and faces the object 2 through a protective cover 6.

Reference numeral 7 denotes a mounting plate on which the object 2 to be thawed is placed, and the vertical movement of the ground side electrode 5 is performed by a drive motor 15 disposed above.

16 is a power supply line for the ground side electrode 5.

Reference numeral 18 denotes a high frequency oscillation section, which is connected to the high voltage side electrode 4 through a power feed line 21, and furthermore, the high frequency oscillation section 18 is connected to a high voltage power source 19 through a power feed line 20.

The thawing chamber 3 is composed of a mounting plate 7, a body part 25 forming a side wall part, and a top plate 22 inside the body part 25, and further includes an upper part VC of the top plate 22.
A wind barrel top plate 28 is provided with a gap to form a duct part.

Then, both ends of the top plate 22 are opened, and the discharge port 23 and the intake port 2 are opened.
4, and an evaporator 11 and a blower 12 for sending cold air are installed between the wind cylinder between the top plate 22 and the wind cylinder top plate 28, and the cold air is sent into the thawing chamber 3 from the discharge port 23.

13 is a condenser, 14 is a compressor, and evaporator 1
1. This is an external unit that constitutes the blower 12 and the refrigerator.

Furthermore, a top plate 2 is provided at the openings of the discharge port 23 and the intake port 24 so that the cold air can be accurately sent to the thawing chamber 3 and circulated to the intake side.
A guide plate 27 is provided with both ends of the plate 2 hanging down into the thawing chamber 3,
The cold air is reliably sent to the object 2 to be thawed, and furthermore, guide plates 26 are provided on both sides of the protective cover 6 to further ensure the guidance, and between both guide plates 26, 27 and the body 25. The structure is such that a passage is formed through the passage.

As described above, according to the apparatus of the present invention, the structure of the defrosting chamber and the wind barrel serving as a ventilation path for cold air is simply that the upper part of the defrosting chamber is made double, and can be formed with a simpler structure.

Therefore, there is no need to double the entire outer periphery of the thawing chamber to form a wind barrel, and it is possible to provide an inexpensive thawing device with a more compact shape.

Furthermore, compared to the conventional system, the volumetric force of the wind barrel is always smaller, and as a result, the capacity of the entire refrigerator unit for producing cold air can be reduced, resulting in cost reduction and miniaturization.

Moreover, since the discharge port and the intake port are formed on the top plate, there is no possibility of dirt or the like entering through there, and the product can be handled hygienically.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a conventional high-frequency thawing device, FIG. 2 is a front sectional view of the high-frequency thawing device of the present invention, and FIG. 3 is a circuit diagram. 2...Object to be thawed, 3...Thawing chamber, 4.
...High voltage side electrode, 5... Earth side electrode,
18...High frequency oscillation part, 22...Top plate, 23...Discharge port, 24...Intake port,
25... body part, 28... wind body top plate.

Claims (1)

[Scope of Claims] 1. A thawing chamber that stores an object to be thawed, a high-frequency oscillator that supplies high-frequency energy to the object to be thawed, and a pair of electrodes, and a high voltage is applied between the electrodes to thaw the object. The upper part of the thawing chamber is made of a double large plate with a gap, and the top plate facing the thawing chamber is provided with an inlet and an outlet,
A high-frequency thawing device characterized in that guide plates are provided in these openings to guide cold air to the object to be thawed. 2. Claim 1, wherein a guide plate extending upward is provided on the ground side electrode, facing the guide plate provided in the opening of the top plate, and a passage is formed by both of the guide plates and the wind barrel. High-frequency thawing device as described in section.