JPH01168232A - Method for freezing and refrigerating fishes - Google Patents

Abstract

PURPOSE:To enable shop front display and preservation of fishes in a fresh state with excellent operating efficiency, by freezing and refrigerating the fishes using a vessel having hanging plates and supporting plates with plural holes in the interior thereof. CONSTITUTION:A vessel, consisting of a lid body 1 and vessel body 2 with water resistance, such as polystyrene based or polyolefin based resin, and having hanging plates 4 and/or supporting plates 11 with holes 3 in the upper part of the vessel body 2 is used. The tail parts of fishes are hung from the holes 3 of the above-mentioned hanging plates 4 or the abdominal parts of the fishes are supported by the holes of the afore-mentioned supporting plates 11. Alternatively the tail parts are hung and the abdominal parts are supported and freezing and refrigeration are carried out in the above-mentioned states to enable display and preservation of the fishes in a fresh state without deformation or damage of the fishes by piling up.

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,
This invention relates to a method for freezing and refrigeration of fish, which does not cause deformation or damage due to stacking of fish, can be packaged in small bags or displayed in stores without being thawed, and can therefore be displayed or stored in a fresh state.

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

However, when fish are placed in a cardboard box, the cardboard box has poor water resistance, so the cardboard box is easily deformed or crushed, and when 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.
Furthermore, even when the fish is loaded into a refrigerated truck and transported after freezing, the cooling efficiency is poor. It is necessary to pull them apart one by one, but in this case, if the thawing is incomplete and parts of the fish are still frozen, it is difficult to pull them apart, and if you forcefully pull away the partially frozen parts, you may damage the fish. This will significantly reduce the product value. If an attempt is made to sufficiently thaw the food to avoid this, the thawing time becomes longer and work efficiency decreases. Furthermore,
After thawing, if the fish are separated one by one, divided into small pieces, and placed on store shelves, it is desirable to keep them in a frozen state for the purpose of preserving freshness. The losses are immeasurable.

"Means for Solving the Problems" In view of the above circumstances, the present inventor has completed the present invention 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 tail of the fish is suspended, or the abdomen of the fish is supported in the through hole of the support plate, or the fish is frozen with the tail suspended and the abdomen supported.
The contents include methods for freezing and refrigeration of fish that support refrigeration.

"Example" The materials of the lid, container main 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 at least one of these 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. 1, the container of the present invention has a lid body (
1) and a container body (2), and a hanging plate (4) having a through hole (3) is provided in the upper part of the container body (2). The hanging plate (4) is provided approximately horizontally on the side wall (5) of the container body (2), and the side wall (5) is attached to the hanging plate (4).
If we pay attention to the side wall (5') and the hanging plate (4) above this dividing part (6) and below the lid (1), we can see that it forms an H-shaped hanging plate. ing,.

Figure 2 shows an example of the hanging plate (4), which has many through holes (3) consisting of long slit-shaped insertion holes (3a) and screw head locking holes (3b). It is set up. Hanging board (4)
To hang a fish, insert the tail into the insertion hole (3a) from the back side of the hanging plate (4), and lock and hold the narrowest part between the tail and the body in the locking hole (3b). let In addition, the locking hole (3b) is adjacent to the locking hole (3b) in the length direction of the hanging plate (4).
3b) They are provided in a zigzag manner so that they are aligned in a straight line and do not overlap.

With this configuration, cold air can pass through and circulate well,
Refrigeration efficiency can be increased.

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

Further, cold air holes (8) are provided 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 from the viewpoint of ventilation effect, it is preferable to provide at least two.
Furthermore, when the containers are arranged in multiple rows and stacked in multiple stages, it is desirable to provide the cold air holes of the adjacent containers so that they communicate with each other so that the cold air is introduced and circulated into each container.For example, as shown in the figure, the cold air holes ( 8) is preferably provided at least two on opposing wall surfaces.

The container with the above structure has the above H-shaped hanging plate (4),
As described above (with the tail of the fish hanging), connect the dividing parts (6), then cover the fish with the lid (1), and cool the fish by introducing and circulating cold air through the cold air holes (8).

FIG. 3 shows another embodiment of the container used in the present invention, in which the hanging plate (4) is supported by a part (9) protruding from the inside of the side wall (5) of the container body (2). Hanging board (4)
In this example, the upper or lower receiver is configured to be movable to the part (9), and one of the side walls (5) may be detachably attached, as if constituting the lid body (1). It is configured.

With such a configuration, the height of the hanging plate (4) can be adjusted according to the size of the fish, making it possible to hold the fish in an optimal state. 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 will flow from the lower cold air hole. It can be discharged. 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 has a through hole (5) in the side wall (5) of the container body (2). 10) is provided. (7) is a recess, and (8) is a cold air hole. FIG. 5 shows an example of the support plate (11),
Oval-shaped through holes (10) that are approximately the same 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. With the lid (11) removed, fish can be inserted into the container from above on the support plate (1).
Insert the head into the through hole (10) of 1) and insert the head into the bottom recess (7).
The lid (1) is closed, and cold air is introduced and passed through the cold air hole (8) for freezing.

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 part. The container with the above structure is H
With the fish suspended on the hanging plate (4) of the mold, insert the fish from the head side into the through hole (10) of the support plate (11) and insert the H-shaped hanging plate (4) into the dividing part ( 6), and insert the head into the bottom recess (7).
), and cold air is introduced and passed through the cold air hole (8) for freezing.

Figures 7 and 8 do not show a state in which a large number of containers (P) are piled up and cool air is circulated to efficiently freeze the containers (P).
Cold air holes (8) are provided on four sides of the container, and the cold air holes of each container are stacked so as to communicate with the cold air holes of other adjacent containers.

In Figure 8, (12) is a partition plate, and the part that contacts the stacked containers (P) is made of a ventilation section such as a net or porous sheet, (13) is a circulation fan, and (13) is a circulation fan;
4) is a cold air inlet.

Cold air is introduced from the cold air inlet (14), and the circulation fan (
13), the cold air is introduced into the container from the cold air hole (8) on one side of the container (P) as indicated by the arrow, passes through the adjacent containers one after another, and is discharged from the other side of the container. The discharged cold air passes through the ventilation section 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, frozen fish is loaded into a refrigerated truck or a freezer truck in its container and transported to its destination. Even during transport, 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, (1) the containers are water resistant, so they will not deform even if stacked in multiple tiers, and therefore the fish contained therein will not be deformed or damaged; (2) Since 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 fish are placed head-side down, blood will not stay on the meat. ■Since 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, compared to cardboard boxes. , the freezing time is reduced to about 1/3. ■Since each fish is independent, there is no need to thaw it when dividing or displaying it, resulting in extremely high work efficiency, and it can be divided into portions while still frozen. It has many advantages, such as being able to be displayed and staying fresh for a long time.

[Brief explanation of the drawing]

1, 3, 4 and 6 are used in the present invention, respectively. Schematic sectional view showing embodiment a of the container, second
The figure is a schematic diagram showing an example of a hanging plate used in the present invention, FIG. 5 is a schematic diagram showing an example of a support plate used in the present invention,
FIGS. 7 and 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,
3a...insertion hole 3b...locking hole, 4...
・Hanging plate 5.5′...Side wall, 6...Dividing part 7・
... recess, 8 ... cold air hole 9 ... receiver, 10 ... through hole 11 ... support plate 12 ... partition plate 13 ... circulation fan, 14 ... cold air inlet P... Container Figure 1 Figure 3 Figure 2 Figure 4 Figure 6 Solid air 51 Figure 7

Claims (1)

[Claims] 1. Using a container comprising a water-resistant lid and a container body, and equipped with a hanging plate and/or a support plate having a plurality of through holes inside, the hanging plate has through holes. Freezing and refrigeration of fish, characterized in that the tail of the fish is suspended, or the abdomen of the fish is supported in the through hole of the support plate, or the fish is frozen and refrigerated with the tail suspended and the abdomen supported. Method. 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. The freezing and refrigeration method according to claim 1, 2, or 3, wherein at least one of the container, the hanging plate, and the support plate is made of foamed synthetic resin.