JP2555507Y2 - Vacuum pre-cooling container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vacuum pre-cooling container for shipping vegetables and fruits such as vegetables and fruits housed therein under vacuum pre-cooling.

[Conventional technology]

Conventionally, as this kind of vacuum pre-cooling container, for example, one described in Japanese Utility Model Publication No. 63-616 has been proposed. This container for vacuum pre-cooling, as shown in FIG.
A container body (1) made of a foamed synthetic resin molded body and a lid (2) are provided, and an opening (3) that constantly communicates inside and outside of the container is provided on a joint surface between the container body (1) and the lid (2). It is provided by a plurality. The cross section of the opening (3) has a bottleneck structure bent in a convex shape. When pre-cooling the fruits and vegetables placed in the container under vacuum, the inside of the container is evacuated in a vacuum chamber, the fruits and vegetables are cooled by the latent heat of evaporation of the moisture on the surface of the fruits and vegetables, and the pressure is restored. ) Will be shipped without closing.

[Problems to be solved by the invention]

However, in the conventional vacuum pre-cooling container, although the opening (3) has a convex-shaped bottleneck structure to increase the ventilation resistance, the opening (3) always communicates inside and outside the container. Therefore, it is difficult to completely prevent cold air from thermally expanding and flowing out to the outside to some extent due to heat conduction or the internal temperature rise due to heat of respiration of fruits and vegetables, and that outside air flows into the inside. Although the cooling time is shortened by this amount, there is a demand to maintain the cooling effect during stocking or transportation for a longer time.

An object of the present invention is to improve the opening of the conventional vacuum pre-cooling container to more satisfy such a demand.

[Means for solving the problem]

In order to achieve the above object, the vacuum pre-cooling container of the present invention includes a container body made of a foamed synthetic resin molded body and a lid, and a ridge provided on the upper peripheral wall of the container body is provided on a peripheral edge of the rear surface of the lid. A container having the provided grooves fitted therein, wherein at least one intake passage and at least one pressure recovery passage communicating with the inside and outside of the container are formed on the joint surface between the container body and the lid so as to be openable and closable, respectively.
A portion of the ridge that forms the intake passage is bent in a convex shape so as to block the outer wall of the groove, and forms a suction passage by external suction during vacuum precooling. The side wall portion of the container body is formed so as to elastically deform outward to open the intake passage, and forms a return pressure passage of the ridge. It is formed so as to elastically deform to open the return pressure passage.

[Action]

In the container for vacuum precooling having the above configuration, before vacuum precooling,
Both the intake passage and the return pressure passage are closed by portions forming the respective passages of the ridge, and the inside of the container is shut off from the outside.

In order to pre-cool the fruits and vegetables placed in the container under vacuum, the container is placed in a vacuum chamber and the vacuum chamber is evacuated. The peripheral wall of the container body is inflated by the suction force from the outside, and the side wall portion of the container body elastically deforms outward to open the intake passage accordingly. On the other hand, the portion of the ridge that forms the pressure recovery passage remains closed without being deformed by the outer wall of the groove. Therefore, the inside and outside of the container communicate with each other via the intake passage, and the inside of the container is in a vacuum state.
Thus, the moisture on the surface of the fruits and vegetables evaporates, and the fruits and vegetables are cooled by the latent heat of evaporation.

When the cooling is completed, the pressure in the vacuum chamber is restored to the atmospheric pressure. The peripheral wall of the container body is depressed by an external pressing force, and accordingly, the portion of the ridge forming the intake passage returns to its original state and closely contacts the inner wall of the groove, thereby closing the intake passage. On the other hand, the side wall portion of the container body, which forms the ridge-shaped return pressure passage, is elastically deformed inward in the groove to open the return pressure passage. Therefore, the inside and outside of the container communicate with each other through the return pressure passage, and outside air flows into the container. When the pressure in the container becomes atmospheric pressure, the pressing force disappears, and the side wall of the container body returns to its original state and forms the return pressure passage of the ridge, contacts the outer wall of the groove, and closes the return pressure passage. Thus, the container returns to the state before the vacuum precooling, and the inside of the container is shut off from the outside.

Since the container is stocked or transported in the closed state before the vacuum pre-cooling, the cool air in the container does not flow out or the outside air flows in, and therefore, the cooling effect may be reduced during stocking or transporting. No, the cool-down time is tremendously long.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

The container for vacuum pre-cooling of the present embodiment includes a container body (11) made of a foamed synthetic resin molded body and a lid (12), as shown in FIGS. A rectangular container in which a ridge (14) provided on an upper surface of a peripheral wall (13) is fitted with a groove (15) provided on a peripheral edge of a back surface of a lid (12). At least one intake passage (16) and at least one return pressure passage (17) communicating the inside and outside of the container are formed on the joint surface with the lid (12) so as to be openable and closable. In the illustration, one intake passage (16) is provided in each of a pair of opposed walls of the peripheral wall (13).
One return pressure passage (17) is formed in each of the other pair of opposing walls. As the synthetic resin for the foam molded article, a heat insulating material having a certain degree of elasticity and low thermal conductivity is preferable, and for example, a polystyrene resin or the like is preferable.

The ridge (14) forms a suction passage (16), and the side wall portion (hereinafter referred to as the suction ridge) (18) of the container body is formed as shown in FIGS. 2 and 4 (a). In addition, a certain working length L
(E.g., about 150 mm), it bends outwardly in a convex shape so as to block the outer wall of the groove (15), and is elastically deformed outwardly at the operation length L, thereby operating to open the intake passage (16). . Further, a side wall portion (hereinafter, referred to as a rebound pressure side ridge) (19) of the container body, which forms a recuperation passage (17),
As shown in FIGS. 2 and 4 (b), the groove (15)
Constant working length M between the inner wall of the wing (for example, about 150 mm)
It has an operation gap (20) (approximately 2 mm) over its entire length, and is elastically deformed inward by an amount corresponding to the operation gap (20) in the operation length M, so as to open the return pressure passage (17).

As shown in FIGS. 2 and 5 (a), the intake passage (16) is provided with a groove (15) at the center of the intake side ridge (18).
The two intake grooves (21) and (22) formed with a constant width U (for example, about 25 mm) on the bottom surface and the lower end surface of the outer wall, and the groove (15) when the intake side ridge (18) is elastically deformed. 6) (see FIG. 6 (a) in FIG. 6 (b)).

In addition, the return pressure passage (17) corresponds to (b) of FIG. 2 and FIG.
As shown in the figure, in the center of the pressure-recovery side ridge (19), three pressure-recovery grooves (24) formed with a constant width V (for example, about 25 mm) on the bottom surface of the groove (15), the lower end surface of the outer wall, and the inner surface of the inner wall. ),
(25), (26) and return pressure side ridge (19) are working gap (20)
And a return pressure gap (27) formed between the groove and the outer wall of the groove (15) when elastically deformed inward (see FIGS. 6 (c) and (b)).

In the container for vacuum precooling having the above configuration, before vacuum precooling,
As shown in FIG. 6 (A), the intake side ridges (18) and the return pressure side ridges (19) come into contact with the inner wall and the outer wall of the groove (15), respectively, and the intake passage (16) and the return pressure passage are provided. (17) Both sides are closed to shut off the inside of the container from the outside.

In order to pre-cool the fruits and vegetables placed in the container under vacuum, the container is placed in a vacuum chamber and the vacuum chamber is evacuated. Perimeter wall (13)
Is inflated by the suction force from the outside, and the ridge (18) on the intake side
As shown in (a) of FIG. 6 (B), the intake air gap (23) is formed by elastically deforming outward, and the intake passage (16) is opened.
On the other hand, as shown in FIG. 6 (b) (b), the rebound pressure side ridge (19) prevents the rebound pressure passage (17) from being deformed by being hindered by the outer wall of the groove (15). It remains closed. Therefore, the inside and outside of the container communicate with each other through the intake passage (16), and the inside of the container is in a vacuum state. Thus, the moisture on the surface of the fruits and vegetables evaporates, and the fruits and vegetables are cooled by the latent heat of evaporation.

When the cooling is completed, the pressure in the vacuum chamber is restored to the atmospheric pressure. The peripheral wall (13) is depressed by external pressing force, and the intake side ridge (18) returns to its original state as shown in FIG. Close to the inner wall, the intake passage (1
6) Close. On the other hand, as shown in FIG. 6 (C) (b), the return pressure side ridge (19) is elastically deformed inward only by the working gap (20) and abuts against the inner wall of the groove (15). A return pressure gap (27) is formed to open the return pressure passage (17). for that reason,
The inside and outside of the container communicate with each other through a return pressure passage (17), and outside air flows into the container. When the pressure in the container becomes atmospheric pressure, the pressing force disappears, the return pressure side ridge (19) returns to the original state, comes into contact with the outer wall of the groove (15), and closes the return pressure passage (17). Thus, the container returns to the state before the vacuum precooling shown in FIG. 6 (A), and the inside of the container is shut off from the outside.

Containers are stored or transported in a closed state before vacuum pre-cooling, so there is no outflow of cool air or inflow of outside air inside the containers, so the cooling time is extremely long, and the containers are kept in stock and during transportation. There is no fear that the cooling effect is reduced.

[Effect of the invention]

Since the present invention is configured as described above, the inside of the container after vacuum pre-cooling is shut off from the outside, and when the container is stocked or transported, the cool air in the container may flow out or the outside air may flow in. Absent. Therefore, there is an advantage that the cooling time is extremely long, and there is no possibility that the cooling effect is reduced during stocking or transportation.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vacuum pre-cooling vessel showing an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is III-II of FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG. 2, FIG. 5 is a sectional view taken along line VV of FIG. 2, FIG.
FIG. 7 is a sectional view showing an opening of a conventional vacuum pre-cooling container. 11 ... container body, 12 ... lid 13 ... peripheral wall, 14 ... ridge 15 ... groove, 16 ... intake passage 17 ... pressure recovery passage 18 ... part of the ridge that forms the intake passage (Protrusion on the intake side) 19: Portion of the ridge forming the return pressure passage (recess on the return side) 20: Working gap 21, 22, ... Intake groove 23: Intake gap 24, 25, 26 Pressure groove 27 …… Recovering pressure gap

Claims (1)

(57) [Scope of request for utility model registration] 1. A container comprising a container main body made of a foamed synthetic resin molded body and a lid, wherein a groove provided on a peripheral edge of the rear surface of the lid fits into a ridge provided on an upper surface of a peripheral wall of the container main body. At least one intake passage and a return pressure passage communicating the inside and outside of the container at the joint surface between the container body and the lid are formed so as to be openable and closable at least one each, and the portion forming the intake passage of the ridge is the portion It is bent in a convex shape so as to block the outer wall of the groove, and forms an intake passage by suction force from the outside during vacuum pre-cooling. The side wall of the container body is elastically deformed outward to open the intake passage. The portion of the ridge that forms the return pressure passage forms a return pressure passage in the groove by external pressing force at the time of return pressure, and the side wall of the container body is elastically deformed inward to return. A vacuum precooling container formed to open a pressure passage.