JPH0560329B2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a method for freezing and refrigeration of fish, and more specifically, the present invention relates to a method for freezing and refrigeration of fish, and more specifically, it is possible to pack fish into sachets or store them in store without deformation or damage caused by stacking the fish, and without thawing the fish. The present invention relates to a method for freezing and refrigeration of fish, which allows fish to be stored and preserved in a fresh state.

``Prior art and problems'' Usually, fish are stored in two tiers of cardboard boxes, stacked on top of each other, and frozen in a freezer at around -40°C. Frozen fish is directly transported in refrigerated trucks to wholesale and retail stores, where it is thawed, divided into small portions, and lined up on store shelves.

However, if you put fish in a cardboard box, the cardboard box may become deformed due to poor water resistance.
They are easily crushed, and if multiple boxes are stacked, not only the cardboard box but also the fish contained therein may be crushed. In addition, cardboard boxes have considerable insulation properties, so they require a long time to freeze, and after freezing,
Even when loaded into a refrigerated truck and transported,
Cooling efficiency is poor. Furthermore, when dividing into smaller portions at wholesale or retail stores or lining up at stores, it is necessary to thaw and separate frozen fish one by one. If the fish is frozen, it is difficult to separate it, and if the fish is forcibly removed when it is partially frozen, the fish will be damaged and the product value will be significantly reduced. If an attempt is made to sufficiently thaw the food to avoid this, the thawing time becomes longer and work efficiency decreases. Furthermore, when thawing the fish, separating them one by one, dividing them into small pieces, and placing them on store shelves, it is desirable to keep them in a frozen state for the purpose of preserving freshness. The time loss is immeasurable.

"Means for Solving the Problems" In view of the above circumstances, the present invention was completed as a result of intensive research to solve the above problems.

That is, the present invention uses a container that is composed of a water-resistant lid and a container body, and is equipped with a hanging plate and/or a support plate having a plurality of through holes inside, and a container in which fish are placed in the through holes of the hanging plate. The contents include a method for freezing and refrigeration of fish, characterized by suspending the tail, supporting the abdomen of the fish in the through hole of the support plate, or freezing and refrigerating the fish with the tail suspended and the abdomen supported. That is.

``Example'' The materials of the lid, container body, hanging plate, and support plate that constitute the container used in the present invention are not particularly limited as long as they are water resistant, but from the viewpoint of cushioning and heat insulation properties, It is preferable that one or more of them is a synthetic resin foam, and examples of these resins include polystyrene resins, polyolefin resins such as polyethylene and polypropylene, and polyurethane resins. In addition, in order to introduce cold air from the outside for freezing and refrigeration, it is preferable to provide at least one cold air hole in the side wall of the lid and the container body.Furthermore, in order to perform differential pressure freezing, etc. It is desirable to provide cold air holes to introduce and circulate cold air.

The container used in the present invention will be explained based on the drawings showing the embodiments. In FIG. A hanging plate 4 is provided. The hanging plate 4 is provided approximately horizontally on the side wall 5 of the container body 2, but the side wall 5 is divided slightly below the hanging plate 4, and the side wall above the divided part 6 and below the lid 1 5' and hanging plate 4, H
It forms the hanging board of the mold.

FIG. 2 shows an example of the hanging plate 4, in which a large number of through holes 3 are bored, each consisting of a long slit-shaped insertion hole 3a and a screw head-shaped locking hole 3b. hanging board 4
To hang a fish, the tail is inserted into the insertion hole 3a from the back side of the hanging plate 4, and the most worn out part between the tail and the body is locked and held in the locking hole 3b. Further, the locking holes 3b are provided in a zigzag pattern between adjacent locking holes 3b in the length direction of the hanging plate 4 so that they are aligned with each other and do not overlap. With such a configuration, cold air can be passed through and circulated well, and refrigeration efficiency can be improved.

A recess 7 for accommodating and supporting the head of the fish is provided on the bottom surface of the container body 2, and the fish is thereby stably held.

Further, cold air holes 8 are bored in the side wall 5 of the container body 2. At least one cold air hole 8 is provided on the side wall 8 of the lid 1 or the container body 2, but it is preferable to provide at least two cold air holes from the viewpoint of ventilation effect.
It is preferable that the cold air holes of adjacent containers are connected so that the cold air is introduced and circulated into each container.
For example, as shown in the figure, there are two cold air holes 8 on opposite walls.
It is preferable to provide at least one.

The container having the above structure has the above H-shaped hanging plate 4.
Then, as described above, the fish's tail is suspended and the dividing part 6 is connected, and then the lid 1 is attached, and cold air is introduced and circulated through the cold air hole 8 to freeze the fish.

FIG. 3 shows another embodiment of the container used in the present invention, in which the hanging plate 4 is supported by a receiving part 9 protruding inside the side wall 5 of the container body 2, and the hanging plate 4 is
is configured to be movable to the upper or lower receiving portion 9. In this example, one side wall 5 is configured to be detachable so as to constitute the lid 1. With this configuration, the height of the hanging plate 4 can be adjusted according to the size of the fish, and the fish can be held in an optimal state. Further, the cold air holes 8 are provided at different heights on the side wall 5. For example, if cold air is introduced from the upper cold air hole, the cold air will descend while cooling the fish, and be discharged from the lower cold air hole. can. Of course, it is also possible to introduce and discharge cold air in the opposite direction.

FIG. 4 shows another embodiment of the container used in the present invention, which is composed of a lid 1 and a container body 2, and a side wall 5 of the container body 2 is provided with a support plate 11 having a through hole 10. ing. 7 is a recess, and 8 is a cold air hole. FIG. 5 shows an example of the support plate 11, in which through-holes 10 having substantially the same oval shape as the body of a fish are arranged in a row. It is preferable that the support plate 11 is also movable so that its height can be adjusted. In the container, with the lid 11 removed, the fish is inserted from above into the through hole 10 of the support plate 11, the head is supported in the bottom recess 7, the lid 1 is closed, and the fish is passed through the cold air hole 8. Cool air is introduced and passed through to freeze.

FIG. 6 shows yet another embodiment of the container of the present invention, in which a hanging plate 4 is provided above the container body 2, and a support plate 11 is provided in the middle portion. In the container having the above structure, with the fish suspended on the H-shaped hanging plate 4, the fish is inserted from the head side into the through hole 10 of the support plate 11, and the H-shaped hanging plate 4 is connected to the dividing portion 6. After connecting, the head is set in the bottom recess 7, and cold air is introduced and passed through the cold air hole 8 for freezing.

Figures 7 and 8 show a large number of containers P piled up,
Indicates a state in which cold air is circulated and efficiently frozen.
Cold air holes 8 are provided on four sides of the container P, and the cold air holes of each container are stacked so as to communicate with the cold air holes of other adjacent containers.

In FIG. 8, 12 is a partition plate, and the part that contacts the stacked containers P is made of a ventilation part such as a net or a porous sheet, 13 is a circulation fan, and 14 is a cold air introduction port. Cold air is introduced from the cold air inlet 14, introduced into the container by the circulation fan 13 through the cold air hole 8 on one side of the container P as shown by the arrow, passes through adjacent containers one after another, and is then introduced from the other side of the container. It is discharged. The discharged cold air passes through the ventilation portion of the partition plate 12 and rises along the partition plate 12, and the above operation is repeated again by the circulation fan 13. By using the container of the present invention, freezing and refrigeration can be efficiently performed by circulating cold air, which has not been done in the past.

As mentioned above, the frozen fish is loaded into a refrigerated truck or a freezer truck in its container and transported to its destination. Even during transportation, the cold vents are useful for drawing in cold air and keeping the fish fresh.

"Operations/Effects" As described above, according to the present invention, the containers are water resistant and will not deform even when stacked in multiple tiers, and therefore the fish stored therein will not be deformed or damaged. Because each fish is supported independently, it will not be deformed or damaged by the weight of other fish, and will stay fresh for a long time.Since the head is facing down, blood will not stay on the meat. Keeps freshness for a long time.As each fish is independent, cold air can pass through easily, improving freezing efficiency.Cold air is introduced directly into the container through the cold air holes, so freezing time is shorter than in the case of a cardboard box. The time is reduced to about 1/3, and since each fish is independent, there is no need to thaw it when dividing or arranging, making the work extremely efficient.Also, it can be divided and arranging while still frozen. It has many advantages such as staying fresh for a long time.

[Brief explanation of the drawing]

1, 3, 4 and 6 are used in the present invention, respectively. 2 is a schematic sectional view showing an embodiment of the container; FIG. 2 is a schematic view showing an example of a hanging plate used in the present invention; FIG. 5 is a schematic view showing an example of a support plate used in the present invention; FIG. and FIG. 8 are schematic diagrams showing a state in which a large number of containers containing fish are stacked and frozen. 1...Lid body, 2...Container body, 3...Through hole, 3
a...insertion hole, 3b...locking hole, 4...hanging plate,
5, 5'...Side wall, 6...Divided part, 7...Recessed part,
8...Cold air hole, 9...Receiving part, 10...Through hole, 1
1... Support plate, 12... Partition plate, 13... Circulation fan, 14... Cold air inlet, P... Container.

Claims (1)

[Claims] 1. Consisting of a water-resistant lid and a container body,
Using a container equipped with a hanging plate and/or support plate having a plurality of through holes inside, the tail of the fish is hung in the through hole of the hanging plate, or the abdomen of the fish is placed in the through hole of the support plate. A method for freezing and refrigeration of fish, characterized by freezing and refrigeration in a state where the fish is supported or the tail is suspended and the abdomen is supported. 2. The freezing and refrigeration method according to claim 1, wherein the head of the fish is accommodated and supported in a recess provided on the bottom of the container. 3. The freezing and refrigeration method according to claim 1 or 2, wherein at least one cold air hole is provided in the side wall of the lid and the container body, and cold air is introduced and circulated through the cold air hole. 4. Claim 1, in which at least one of the container, the hanging plate, and the supporting plate is made of foamed synthetic resin;
Freezing/refrigeration method according to item 2 or 3.