JPH11290206A - Thawing container for frozen food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To favorably thaw a frozen food containing a plurality of kinds of food materials of which the thawing conditions are different by a method wherein for a thawing container to be used in order to simultaneously thaw the plurality of kinds of frozen food materials of which the thawing conditions are different, the plurality of kinds of food materials are housed in members of which the high frequency transmittances are different. SOLUTION: This thawing container which is suitably used to thaw a frozen food such as a frozen sushi 9, comprises a container main body 1 made of a high frequency passing material, and an upper lid 3 made of a high frequency shielding material, and an internal tray 5 made of the high frequency passing material is separatably set on a fastening step part 2 which is disposed on the peripheral edge of the container main body 1. On the internal tray 5, eight housing recesses 7 are integrally molded, and the frozen sushi 9 is housed in the housing recesses 7. When a microwave oven is operated at the time of the thawing of the sushi, a high frequency is not applied to sushi toppings 11, and in the meantime, the high frequency is applied to the rice 13, and the only the rice 13 is thawed and warmed, and in a steaming process, the sushi toppings 11 are thawed by the remaining heat of the rice 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thawing container used for thawing frozen food using a microwave oven or the like. In particular, the present invention relates to a thawing container used for thawing frozen food composed of a plurality of ingredients such as frozen sushi.

[0002]

2. Description of the Related Art In general, when thawing and / or heating frozen food, it is convenient to use a microwave oven.

[0003]

However, it is extremely difficult to thaw foods such as frozen sushi in a good condition using a microwave oven. In other words, if the thawing time is long, the rice will be in a moderately warm and good condition, but will be heated to the sushi material. On the other hand, if the thawing time is short, the sushi is thawed at an appropriate temperature, but the rice is not sufficiently thawed. This is because the optimum thawing conditions (thawing time and thawing temperature) differ between sushi and rice, which are mainly made of seafood.

[0004] The present invention has been made in view of the above situation, and an object of the present invention is to provide a thawing container which can satisfactorily thaw frozen foods containing a plurality of foods having different optimum thawing conditions.

[0005]

A plurality of food materials having different optimum thawing conditions are accommodated by members having different high-frequency transmittances.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a sushi thawing container for a microwave oven according to a first embodiment of the present invention. FIG. 2 is an enlarged view showing the structure of the main part (A) of the thawing container shown in FIG. In the figure, reference numeral 1 denotes a container body made of a high-frequency material such as polypropylene. Reference numeral 3 denotes an upper lid made of a high-frequency cutoff material,
It is made of aluminum, ceramics, vapor-deposited aluminum, fluorinated aluminum, or the like. The upper lid 3 is separably and hermetically mounted on the container body 1.

A locking step 2 is provided on the peripheral edge of the container body 1, and an inner plate 5 made of a high-frequency material such as polypropylene is set on the locking step 2 in a separable manner. As shown in FIG. 3, eight storage recesses 7 are integrally formed in the inner plate 5, and the frozen sushi 9 is stored in the storage recesses 7. The storage recess 7 is formed at a height (depth) H such that when the sushi 9 is stored, the sushi material 11 protrudes above the container body 1. Reference numeral 13 denotes rice.

As shown in FIG. 3, eight receiving recesses 7 are formed in the middle plate 5 in two rows in an inclined state, and adjacent receiving recesses 7 are connected by grooves 7a. The storage recesses 7 in the upper row and the storage recesses 7 in the lower row in FIG. Thereby, the sushi 9 stored in all the storage recesses 7 is uniformly thawed. Although not shown in FIG. 3, the groove 7 a is recessed in a U-shape, and is formed shallower than the storage recess 7.

Next, a sushi thawing method using the sushi thawing container according to the first embodiment as described above will be described. First, the middle plate 5 on which the frozen sushi 9 is placed is stored in the container body 1,
The upper lid 3 is closed, and the inner plate 5 is stored between the container body 1 and the upper lid 3 in a tightly closed state. Next, the container main body 1 is housed in a microwave oven (not shown), the microwave oven is operated, and high-frequency irradiation is performed at about 600 W for about 3 minutes.

At this time, the high frequency does not act on the upper part of the sushi 9, ie, the sushi material 11, since the upper lid 3 blocks the high frequency and the sushi material 11 is protruded above the container body 1. On the other hand, a high frequency transmitted through the container body 1 acts on the rice 13 below the sushi 9. Because of this, rice 1
Only 3 will be thawed and warm.

Thereafter, the high-frequency irradiation is stopped and steaming is performed for about 3 minutes. In this steaming process, the residual heat of the rice 13 is transmitted to the sushi material 11, and the sushi material 11 is thawed to a temperature at which the sushi material 11 does not lose its coldness. At the same time, the rice 13 also cools to an appropriate temperature. That is, the temperature of the sushi material 11 and the rice 13 becomes like a real sushi that is not frozen.

The upper lid 3 may be connected to the container body 1 so as to be openable and closable. Further, the number of storage recesses 7 to be set is arbitrary, and may be about one or two. If the number of the storage recesses 7 is about two, the middle plate 5 can be placed on a so-called rotating sushi tray as it is, and the use is expanded. Furthermore, it is sufficient that the inner plate 5 is set separably on the container body 1, instead of being directly overlaid on the bottom surface of the container body 1, as shown in FIG. 4, a state in which a space 14 is provided from the bottom surface of the container body 1. May be installed.

FIG. 5 shows the structure of a thawing container according to a second embodiment of the present invention. In the drawing, the same or corresponding components as those of the first embodiment described above are denoted by the same reference numerals, and duplicate description will be omitted. The thawing container of this embodiment is a thawing container for chirashi sushi, and one large concave portion 7 is formed in the inner plate 5. In the recess 7, rice 13 is stored, and a plurality of kinds of ingredients (sushi ingredients) 11 are placed thereon.

FIG. 6 shows the structure of a defrosting container according to a third embodiment of the present invention. In the figure, the same reference numerals are given to the same or corresponding components as those of the first and second embodiments described above, and duplicate description will be omitted. In this embodiment, the technical idea of the present invention is applied to a lunch box, and a middle plate 105 made of a high-frequency shielding material is provided next to a middle plate 5 made of a high-frequency transmitting material.
Has been arranged. Side dishes 104 (salads, fruits, poops, cold guys, etc.) that are not desired to be cooked are placed in the middle plate 105. In this embodiment, the upper lid 103
Is formed of a high-frequency transmitting material.

When the thawing container (lunch box) of this embodiment is heated (thawed) with a microwave oven, the high frequency wave passes through the upper lid 103 and the container body 1 and reaches the rice 13 and the side dish 104. At this time, the high frequency wave from below the side dish 104 toward the inside of the lunch box is blocked by the inner plate 105 and does not act on the side dish 104. That is, the rice 13 is irradiated with a high frequency from all directions, but only the high frequency from above acts on the side dish 104. Therefore, when the thawing container (lunch box) of the present embodiment is heated (thawed) in a microwave oven, the rice 13
Is not heated much.

FIG. 7 shows the structure of a thaw container according to a fourth embodiment of the present invention. In the figure, the same reference numerals are given to the same or corresponding components as those of the first, second, and third embodiments described above, and duplicate description will be omitted. In this embodiment, as in the third embodiment, the technical idea of the present invention is applied to a lunch box, and a middle plate made of a high-frequency shielding material is provided between two middle plates 5 made of a high-frequency transmitting material. 105 are arranged.
One of the two middle plates 5 contains rice 13 and the other contains side dishes 106 such as fried chicken, which is desirably heated. Side dish 104 (salad, fruit, cold, etc.) that is not desired to be cooked is stored in middle plate 105.

The upper lid 103 is made of a high-frequency transmitting material, but only the portion 203a facing the inner plate 105 is made of a high-frequency shielding material. High frequency shielding part 2
03a is formed so as to be dented inside the lunch box, so that high frequencies from above and obliquely above do not reach the side 104. In the middle plate 105 of this embodiment, sashimi and the like that need to avoid direct heating can be accommodated in addition to salad, fruit, cold and so on.

When the thawing container (lunch box) of the present embodiment is heated (thawed) with a microwave oven, the high frequency light passes through the top lid 103 and the container body 1 and irradiates the rice 13 and the side dish 106. At this time, the high-frequency wave from below the side dish 104 toward the inside of the lunch box is cut off by the inner plate 105, and the high-frequency wave from above the side dish 104 is cut off by the high-frequency shielding portion 203a of the upper lid. That is, the rice 13 and the side dish 106 include
High frequency radiation is applied from all directions.
Does not directly affect high frequency. For this reason, the side dish 104 is gradually thawed like natural thawing by the temperature of the rice 13, the side dish 106 and the container.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various design changes are possible within the scope of the technical idea described in the claims. is there. For example, the container can be made of not only the high-frequency transmitting material and the high-frequency shielding material but also a material whose high-frequency transmittance is adjusted intermediately. Further, the present invention can be applied to a container for heating non-frozen food (eg, a lunch box).

[0020]

As described above, according to the frozen food thawing container of the present invention, since a plurality of types of food materials are accommodated by members having different high-frequency transmittances, a plurality of types of food materials having different optimum thawing conditions are stored. It has a special effect of being able to thaw frozen foods containing it well.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure of a thawing container for frozen sushi according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view showing a structure of a main part of the first embodiment surrounded by A in FIG. 1;

FIG. 3 is a plan view showing a configuration of a middle plate of the thawing container of the first embodiment.

FIG. 4 is a cross-sectional view of a main part showing a modification of the first embodiment.

FIG. 5 is a sectional view showing the structure of a thaw container for frozen sushi according to a second embodiment of the present invention.

FIG. 6 is a sectional view showing the structure of a defrosting container / lunch box according to a third embodiment of the present invention.

FIG. 7 is a sectional view showing the structure of a thaw container / lunch box according to a fourth embodiment of the present invention.

Claims (8)

[Claims] 1. A thawing container used for simultaneously thawing a plurality of types of frozen foods having different optimum thawing conditions by using a microwave oven, wherein the plurality of types of foods are accommodated by members having different high-frequency transmittances. Thawing container for frozen foods. 2. The thawing container according to claim 1, wherein the frozen food is a frozen sushi in which sushi is placed on rice. 3. A container body made of a high-frequency passing material, an upper lid made of a high-frequency shielding material, and a middle plate made of a high-frequency passing material, wherein the middle plate has a storage recess for storing frozen sushi. The thawing container according to claim 2, wherein the sushi material is set to a depth H such that the sushi material protrudes above the concave portion, and is defrosted by residual heat of the rice. 4. The medium tray according to claim 1, wherein the inner plate has a plurality of storage recesses arranged in a plurality of rows in the horizontal direction, and each row is arranged to be shifted by a half pitch from each other in the horizontal direction. 4. The thawing container according to 3. 5. The thawing container according to claim 4, wherein the storage recesses in the same row are connected by a predetermined groove. 6. The thawing container according to claim 5, wherein the groove is set to be shallower than a depth H of the storage recess. 7. The thawing container according to claim 1, wherein the frozen food is a lunch box containing rice and side dishes, and the thawing container doubles as a lunch box. 8. The thawing container according to claim 7, further comprising an upper lid having a plurality of regions having different high-frequency transmittances.