JPS58162277A - High-frequency thawing apparatus - Google Patents

Abstract

PURPOSE:To improve the efficiency of the thawing operation with simple and inexpensive apparatus, by putting the material to be thawed between a pair of vertically disposed electrodes, wherein the upper electrode is made movable vertically interlocked with the opening of the door. CONSTITUTION:The thawing chamber 1 contains the upper and the lower electrodes 6 and 7, between which the frozen material is to be inserted. The upper electrode 6 is so constructed as to be movable vertically interlocked with the opening motion of the door 12 by the link 13. When the door 12 is opened, the link 13 is pulled and the upper electrode 6 is lifted to the top position. Then, the material 5 to be thawed is placed on the lower electrode 7. By the closing motion of the door 12, the upper electrode 6 is lowered and brought into contact with the material 5 to be thawed. Accordingly, the thawing of the material with high-frequency electric field can be carried out under the maximum electrical output, and the operation to adjust the gap between the electrodes 6 and 7 can be omitted.

Description

[Detailed Description of the Invention] The present invention relates to a high frequency thawing device for frozen foods, etc.
In particular, the two-pronged approach is to improve defrosting efficiency and usability.

Conventionally, the dielectric heating thawing method using high-frequency waves of several hours or more is well known, and generally, the object to be thawed is sandwiched between two upper and lower electrodes, and a high-frequency electric field is applied between them. Heat is generated and thaws due to dielectric loss. However, when an object to be thawed is sandwiched between two electrodes, the high frequency output will be larger and the efficiency will be improved by placing the electrodes as close as possible to the object to be thawed. You can defrost things quickly. For this reason, generally one of the electrodes is made vertically movable so that it can be moved according to the thickness of the object to be thawed. Therefore, as preparatory operations for performing a thawing operation, it is necessary to open the door to take in and take out the object to be thawed, and to adjust the height of the electrode to match the size of the object to be thawed. There are still methods to perform this adjustment operation, such as interlocking levers from outside the device or using a drive source such as a motor, but these mechanisms are complex and expensive. Ta.

3be=' Therefore, the present invention aims to eliminate these drawbacks and provide a high-frequency decompressing device that is inexpensive and has improved usability with less preparatory operations.An embodiment thereof will be described below with reference to the accompanying drawings. do. In the figure, a thawing chamber wall 2 constituting a thawing chamber 1 is made of metal, and a lower surface composed of an insulating frame 3 and a mounting plate 4 is fixed to the lower surface of the thawing chamber wall 2. Reference numeral 6 denotes an object to be thawed, and there is an upper electrode 6 and a lower electrode 7 sandwiching the object. Also, the upper electrode 6
An insulating slider 9 is fixed to both ends of the defrosting chamber wall 20, and is engaged with a slide rod 1o fixed to both sides of the defrosting chamber wall 20 by an insulating frame 3°3', so that the slider 9 can move up and down. or,
A support fitting 11 is fixed to the slider 9, and supports the entire upper electrode 6 at the center of the support fitting 11, and is connected to a connecting member 13 such as a string connected to a door X2 through which the object to be thawed 6 is taken in and out. ing. This connecting member 13 is still connected to a hinge 19 fixed to the door 12 via pulleys 14 to 18. The pulley 18 is still attached to the movable plate 20, and the movable plate 20 is constantly pulled by the spring 21. Further, 22 is an oscillation circuit section for generating high frequency waves, which is cooled by a fan 23. Further, 24 and 25 are power supply lines for supplying high frequency voltage to the electrodes 6 and 7 above and below the oscillation circuit section 22, and are connected to the oscillation circuit section 22 and the power supply line 26.
is shielded by a conductive metal casing 26.

Further, 27 is an exterior, 28 is a control unit such as a relay, and 29 is an operation unit such as a power switch.

Next, the operation of this embodiment will be explained. When the door 12 of the non-shutling thawing device is closed, the object 5 to be thawed is placed in the thawing chamber 1.
If the upper electrode 6 is not inserted, the upper electrode 6 is closest to the lower electrode 7, and when the door 12 is completely opened, the connecting member 13 is closed. 1 is stretched, and the upper electrode 6 is in the highest state. Then, when the object 6 to be thawed is put in and the door is closed, the upper electrode 6 lowers and comes into contact with the object 5 to be thawed. When the door 12 is further closed and completely tightened, the connecting member 13 will start to loosen, but the loosening will be pulled by the spring 21 provided on the pulley 18, so there is no chance of it coming off the pulley 18. There is no.

Further, since the electrode 6 comes into contact with the object 5 to be thawed and measures the exact size, when defrosting the object, the object can be thawed with the highest output, which eliminates the trouble of adjusting the distance between the electrodes 6 and 7.

Furthermore, when the door 12 is opened when thawing is completed, the electrode 6
, 7 are raised, making it very easy to take out the thawed object 6.

As described above, according to the present invention, there is no need to move the electrode up and down each time when putting in and taking out an object to be thawed, and the electrode is set in a state in which the blower can be inserted in the most efficient manner even in the case of a large object to be thawed. As a result, the overall work efficiency is improved, and since the configuration itself is very simple, the cost is also low.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a high-frequency decompressing device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1... Thawing chamber, 4... Placement plate, 5...
...Object to be thawed, 6...Top electrode, 9...
...Slider, 10 e...Slide rod, 12 s
agas/door, 13e@...connecting member, 14.15
, 16, 17. 18・绢...-Boo6banj, 22...Oscillation circuit section, 27...Exterior.

Claims (3)

[Claims] (1) A thawing chamber that stores the items to be thawed, two upper and lower electrodes configured to sandwich the items to be thawed, an oscillation circuit section that generates a high-frequency electric field between the electrodes, and a thawing chamber for loading and unloading the items to be thawed. A high-frequency thawing device is provided with a locking door, the upper electrode is movable in the vertical direction, and is linked to the opening and closing of the door. (2) The high-frequency thawing device according to claim 1, wherein the upper electrode and the door are connected by a connecting member, and a pulley for applying tension is provided in the middle of the connecting member. (3) The high-frequency thawing device according to claim 1, wherein the upper electrode has a slider at its end slidably engaged with a slide rod provided on the wall of the thawing chamber via an insulator.