JPS6010707B2 - High frequency thawing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a high frequency thawing device for thawing frozen meat and the like.

Conventional structure and its problems Defrosting by dielectric heating at high frequencies of several MHz or higher is generally known, and in order to prevent uniform thawing and local heating, the surface is cooled in a cold atmosphere. There is a known method of defrosting by applying a high-frequency electric field.

FIG. 1 is a schematic diagram of such a secondary high-frequency thawing device, in which a thawing chamber 1, a cooling device 2, cold air passages 3, 3', and their outer walls are covered with a heat insulating material 4, and an upper electrode 5 and a lower electrode are covered. An object 7 to be thawed is sandwiched between the wafer 6 and the thawed object 7, and a high-frequency electric field is applied to thaw the object 7 by dielectric heating. The upper electrode 5 can be moved up and down according to the size of the object 7 to be thawed by an elevating shaft 8 and a drive section 9. Further, 10 is a high frequency oscillation section, 11 is a high voltage power supply section, 12 is a condenser, and 13 is a cooling fan.
When such a conventional high-frequency thawing device continues to operate for a long period of time, the cooling device 2 cools the elevator shaft 8 in the thawing chamber, and the upper drive section 9 is also cooled by heat conduction. There is a problem in that the safety and durability of the electrical components are deteriorated due to the surrounding environment.To solve this problem, the drive unit 9 is generally surrounded by a heat insulating material to cut off the outside air. Alternatively, a method must be used to prevent heat conduction by using a resin part between the lifting shaft 8 and the drive unit 9, which has drawbacks such as complicating the mechanism, increasing cost, and reducing ease of assembly. was. OBJECTS OF THE INVENTION The present invention aims to eliminate the drawbacks of the above-mentioned systems and to improve safety against dew mackerel, especially near electrical components.

Structure of the Invention In order to achieve the above object, the high-frequency thawing device of the present invention includes a thawing chamber that stores an object to be thawed, a high-frequency oscillator that supplies high-frequency energy, and a pair of heating electrodes that irradiate high-frequency waves. In a high-frequency thawing device that is equipped with an electrode drive device that moves the electrodes up and down and performs induction heating thawing while sending cold air into the thawing chamber by a refrigeration device, the exhaust gas of a condenser cooling fan of the refrigeration device is guided to the electrode drive device. It is something.

DESCRIPTION OF EMBODIMENTS Examples of the present invention will be described below with reference to FIGS. 2 to 4.

FIG. 2 is an overall schematic diagram of one embodiment, but the positions of the condenser 12' and the cooling fan 13' are different from the conventional example, and the air sucked from the side of the thawing device by the cooling fan 13' is It passes through the condenser 12' for cooling and is further blown onto the drive section 9. The temperature of the air blown to the drive section 9 has increased due to the heat taken from the condenser 12', so that the temperature drop of the drive shaft 9 due to heat conduction from the elevating shaft 8 can be suppressed, and the temperature around the drive section 9 can be suppressed. can prevent dew streaks. Another embodiment is shown in FIG.

This is because air is sucked in from the front of the defrosting device by a cooling fan 13'', passes through a condenser 12'', is cooled, and is guided to the drive section 9 by an air guide 14. This embodiment also has the same effect as the previous embodiment, and no butterfly stripes are frozen on the drive 9. Effects of the Invention As described above, according to the present invention, the problem of deterioration of the stability and durability of electrical components due to fog streaks around the drive unit can be solved without complicating the mechanism, and in terms of cost and ease of assembly. It is possible to achieve the effect that the problem can be solved without any change.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view of a secondary high-frequency thawing device, Fig. 2 is a front sectional view of a high-frequency thawing device according to an embodiment of the present invention, Fig. 3 is a plan sectional view of the same device, and Fig. 4 is another one. FIG. 8... Lifting shaft, 9... Drive unit, 12'...
...Condenser, 13'...Cooling fan. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 It has a thawing chamber that stores the object to be thawed, a high-frequency oscillation device that supplies high-frequency energy, and a pair of heating electrodes that irradiates high-frequency waves, and is further equipped with an electrode drive device that moves the heating electrodes up and down, so that the thawing chamber can be moved by the freezing device. A high-frequency thawing device that performs dielectric heating thawing while sending cold air to the refrigeration device, the high-frequency thawing device being configured to guide exhaust air from a condenser cooling fan of the refrigeration device to an electrode drive device.