JPS603749Y2 - High frequency heating thawing device for frozen foods - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for thawing frozen foods by high-frequency heating.

Frozen foods are usually stored in a freezer maintained at around -20°C, so the food is at the freezer temperature from the center to the surface, but in order to cook such frozen foods, First it must be unzipped as is known.

As the means for defrosting, high frequency heating treatment has become widely used because it can defrost in a relatively short time.

However, conventional thawing devices of this type simply use a microwave oven designed to the desired specifications, so if the object to be thawed has a sharp part, such as a crab's leg, it may be difficult to defrost that part. This causes the thawing to proceed ahead of other parts, making it difficult for the thawing to proceed uniformly as a whole.Furthermore, even in the absence of such sharp parts, the thawed moisture is exposed on the surface of the thawed object, resulting in high frequency Energy will be applied to the moisture in a concentrated manner, making the surface temperature much higher than the internal temperature, and the surface will dry out, so when the inside is completely thawed. However, there was a drawback that the surface portion and protrusions were in a state unsuitable for cooking.

In view of the above-mentioned difficulties, the present invention has been developed by equipping a conventional microwave oven with a humidifier and an air blower that operate at the appropriate times, thereby suppressing local heating of the object to be thawed and achieving as uniform a thawing process as possible. The purpose is to make it possible.

To explain the present invention by an illustrated embodiment, the device main body 1
On the front side of the microwave oven, there is provided an opening/closing door 2 and an operation panel 3 similar to the existing microwave oven, and a thawing chamber 4 is formed in which the object to be thawed is stored when the door 2 is opened. High frequency generation sources 5, 5 using magnetrons etc. installed in
Accordingly, the object to be thawed is configured to receive high frequency irradiation.

The defrosting chamber 4 shown in FIG. The output signal of the sensor 7, that is, the output proportional to the weight of the object to be thawed, is input to the microcomputer 8 incorporated in the main body 1 of the apparatus, and the control panel 3 The operation of the weight sensor 7 and microcomputer 8 is controlled.

Furthermore, the thawing chamber 4 is not only provided with a ventilation port 9.9 that communicates with the outside air, but also has a Natshu receiving plate 10 on which the object to be thawed is placed in the lower part of the thawing chamber 4. humidifiers 11, 11 are provided, and humidifiers 11, 1 are provided.
1, fine water droplets can be sprayed into the thawing chamber 4, and a blower 12 such as a fan installed on the ceiling wall can blow air in any direction toward the object to be thawed on the mesh receiving plate 10. has been done.

Therefore, in order to use this, the control can be performed manually or by the computer 8 by setting the operation panel 3. In the case of manual control, the blower 12, humidifier 11, and By turning on and off the respective switches of the high frequency generation source 5, or in the case of using the computer 8, turning on and off the control switch for controlling the computer 8 provided on the operation panel 3, the weight sensor is activated. After receiving the signal from 7, the computer 8 operates according to the selected program.

That is, first, the high frequency generation sources 5, 5 are activated for a predetermined period of time, and when thawing has progressed to a certain extent, high frequency heating is stopped, and then the humidifier 11 and the blower 12 are activated at the same time or a little later. As a result, air is blown onto the surface of the object to be thawed to which fine water droplets from the humidifier 11 have adhered, vaporizing the moisture on the surface, thus removing latent heat from the surface of the object to be thawed, and thawing the object from the inside. It lowers the temperature of the same surface, which is previously hot and dry, and provides moisture.

Further, the operation of the humidifiers 11, 11 and the blower 12 is stopped, and the high frequency generation sources 5, 5' are started again. The food is thawed so that the difference between its surface temperature and internal temperature is as small as possible.

The present invention, as embodied by the above embodiments, includes a main body 1 of the device;
To do this, a thawing chamber 4 is formed in which the thawed object is irradiated with high frequency waves, a ventilation opening 9 is opened in the thawing chamber 4, and water droplets are formed in the thawing chamber 4 when the high frequency irradiation is interrupted. Since the humidifier 11 is provided with a humidifier 11 that provides a By installing a humidifier 11 and a blower 12 that operate with a time difference from the humidifier 11 and the blower 12, which operate when the operation is interrupted, the temperature of the thawed object is reduced so as to reduce the difference between the surface temperature of the thawed object and the internal temperature. It is possible to proceed with thawing while removing latent heat from the surface, and thawing can proceed uniformly rather than unevenly as with conventional thawing equipment, so thawing can be performed with less trouble due to local heating than with conventional thawing equipment. can be done.

[Brief explanation of the drawing]

FIG. 1 is a front view of a high-frequency heating thawing device according to the present invention, and FIG. 2 is a front explanatory view showing the inside of the device in a cutaway manner. 1... Apparatus body, 4... Thawing chamber, 5.
...High frequency source, 7...Weight sensor 8...Microcomputer, 9...
·Air vent.

Claims (1)

[Scope of utility model registration request] The main body of the device has a thawing chamber in which the stored items are irradiated with high frequency waves, a ventilation opening is formed in the thawing chamber, and a humidifier that supplies water droplets to the thawing chamber when the high frequency irradiation is interrupted. A high-frequency heating thawing device for frozen food, comprising: a humidifier; and a blower that operates together with the humidifier to blow air to the object to be thawed.