JP2002357383A - Cool box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cool box capable of keeping a prescribed temperature for several tens of hours, only with an object left therein. SOLUTION: A precooling chamber (2) and a cold insulation chamber (3) are formed in divisions vertically inside a heat insulation box (1) and made to communicate with each other by a cold communication port (13). A holding part (7) of dry ice (11) is positioned in the precooling chamber (2), while a cold storage medium (10) is held and disposed in the precooling chamber (2). An opening regulating door (14) disposed corresponding to the cold communication port (13) is controlled to open and close by a temperature sensing automated opening-closing device (15) on the basis of a temperature inside the cold insulation chamber (3).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool box used for transferring refrigerated medicines and foods.

[0002]

2. Description of the Related Art When transporting medicines and refrigerated foods that need to be kept in a refrigerator, they must be kept in a refrigerated state even during the transportation. There is something that needs to be done. Because of this,
Generally, they are transported by refrigerated vehicles or ice cans.

[0003]

However, in a refrigerated vehicle, the compressor is operated by using the engine of the vehicle as a drive source. Therefore, when the engine is stopped by stopping idling while the vehicle is stopped or the like and the engine is turned off, the heat exchange function of the refrigerator is performed. Will stop. If this stop is for a short time, the refrigerator temperature can be maintained within the allowable range. It may take tens of hours to arrive. In such a case, the luggage has to be transferred and stored in the refrigerated warehouse at the truck terminal, and there is a problem that it takes time and effort to carry out the transportation work as much as it needs to be taken in and out of the refrigerated warehouse.

[0004] The present invention has been made in view of such a point, and an object of the present invention is to provide a cool box which can maintain a predetermined temperature for several tens of hours only by housing.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a pre-cooling room and a cold-holding room which are formed vertically inside a heat-insulating box, and communicates cold air with the cold-holding room. Communicate with the mouth, and place the storage unit for dry ice in the pre-cooling room, store and store the cold storage agent in the pre-cooling room, and open the opening adjustment door corresponding to the cold air communication port part based on the temperature in the cooling room. It is characterized in that it is configured to control the opening and closing by a temperature sensing automatic opening and closing device that operates.

[0006]

According to the present invention, a pre-cooling room and a cold-holding room are divided and formed vertically inside the heat-insulating box. In addition to locating the cold storage unit, the cold storage agent is stored in the pre-cooling room, so that the cold energy held by the dry ice can be transmitted to the cold storage, and the cold storage room can be cooled. Since the excess cold energy during the sublimation is accumulated in the cold storage agent, the cold energy stored in the cold storage agent is released after the dry ice is consumed, and the cold room is cooled for a long time. You can do it. And since the opening degree of the cold air communication port that communicates with the pre-cooling room where the dry ice is placed and the cold-holding room is adjusted according to the temperature of the cold-holding room, the cold energy in the pre-cooling room is necessary. It will be supplied in quantity.

[0007]

FIG. 1 is a conceptual diagram of a cool box to which the present invention is applied. In FIG. 1, reference numeral (1) designates a heat insulating box formed by dividing the inside into upper and lower portions and forming a pre-cooling room (2) and a cool room (3), and a front wall of the cool room (3) of the heat-insulating box (1). The portion is used as a carry-in / out port (4), and the carry-in / out port (4) is configured to be able to be closed by an opening / closing door (5) having a heat insulating structure.

A dry ice storage case (7) made of a good heat conductor such as stainless steel is fixedly disposed on a ceiling wall (6) of the pre-cooling chamber (2). A dry ice inlet (8) is formed in the ceiling wall (6) of the pre-cooling chamber (2) corresponding to the above. A cover plate (9) having a heat insulating structure is attached to the dry ice inlet (8) so as to close the dry ice inlet (7).

In the pre-cooling chamber (2), a regenerator (10) formed by bagging a hydrogel is disposed, and the pre-cooling chamber (2) is placed through the wall surface of the dry ice storage case (7). A part of the cold energy held by dry ice (11) released into the cold storage medium
It is configured to accumulate in (10). The dry ice (11) to be installed in the dry ice storage case (7) is installed with a heat insulating material (12) such as corrugated cardboard or newsprint, and the dry ice (11) is supplied from the pre-cooling chamber (2). The sublimation speed is adjusted by adjusting the heat input transmitted to 11).

The partition wall (13) located between the pre-cooling chamber (2) and the cold storage chamber (3) has a cold air communication port (13) opened. Adjustment door (14) is installed. In the cold storage room (3), a temperature sensing automatic opening / closing device (15) is arranged in a state of being connected to the opening adjustment door (14), and the cooling room detected by the temperature sensing automatic opening / closing device (15) is provided. The opening degree adjusting door (14) is opened and closed based on the temperature of (3) to control the opening degree of the cool air communication port (13). The symbol (16) in the figure is a cool room
(3) The items to be refrigerated placed in.

In the cool box constructed as described above, 30 bottles filled with 500 cc of 1% salt water as refrigerated goods (16) are packed in a cardboard box,
In a cold storage room (3), two bottles of 20 bottles each containing 500 cc of 200% salt water and packed in a cardboard box are stored in a three-tiered state in a cold storage room (3). 3kg dry ice block (11)
The temperature changes of the pre-cooling room (2), the cold storage room (3), and the items to be refrigerated (16) were measured. The result is shown in FIG. In addition, the thing to be refrigerated (16) was used in a refrigerator to be kept refrigerated at a product temperature of about 2 ° C.

[0012] According to FIG.
The product temperature was maintained at 10 ° C. or less for about an hour. In this case, it can be seen that the dry ice completely sublimes about 40 hours after the introduction of the dry ice, and that about 20 hours after the sublimation of the dry ice is affected by the amount of heat of the regenerator.

By the way, 10.6 kg of block-shaped dry ice is directly accommodated in the dry ice storage case (7) without any intervening heat insulating material, and the cold storage agent (10) is not arranged in the pre-cooling chamber (2). The temperature change was as shown in FIG.

From FIG. 3, it can be seen that the sublimation of the dry ice is completed in about 26 hours, and the product temperature exceeds 10 ° C. in about 40 hours after the introduction of the dry eye.

[0015]

According to the present invention, a pre-cooling room and a cold-holding room are divided and formed vertically inside the heat-insulating box, and the pre-cooling room and the cold-holding room communicate with each other through the cool air communication port, and the dry ice is stored in the pre-cooling room. In addition to locating the cold storage unit, the cold storage agent is stored in the pre-cooling room, so that the cold energy held by the dry ice can be transmitted to the cold storage, and the cold storage room can be cooled. Since the excess cold energy during the sublimation is accumulated in the cold storage agent, the cold energy stored in the cold storage agent is released after the dry ice is consumed, and the cold room is cooled for a long time. You can do it. And since the opening degree of the cold air communication port that communicates with the pre-cooling room where the dry ice is placed and the cold-holding room is adjusted according to the temperature of the cold-holding room, the cold energy in the pre-cooling room is necessary. It will be supplied in quantity. As a result, the cool box can be stored with the cool box mounted on the cargo bed of the car or in a state where the cool box is installed in a normal collection space at a truck terminal or the like. be able to.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a cool box to which the present invention is applied.

FIG. 2 is a graph showing a change over time of the temperature inside the cool box and the temperature of the refrigerated product in the embodiment.

FIG. 3 is a graph showing the time change of the temperature inside the cool box and the temperature of the refrigerated item in a comparative example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Insulated box, 2 ... Pre-cooling room, 3 ... Cold storage room, 7 ... Dry ice storage part, 10 ... Cold storage agent, 11 ... Dry ice, 13
... Cold air communication port, 14 ... Opening adjustment door, 15 ... Temperature sensing automatic opening and closing device.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takehiro Kashiwagi 3-4-8 Honcho, Chuo-ku, Osaka-shi F-term in Iwatani Industry Co., Ltd. 3L044 AA04 BA01 BA02 CA11 DC02 DC04 GA01 HA01 JA01 KA01 KA04

Claims (1)

[Claims] 1. A pre-cooling room (2) and a cold-holding room (3) are formed vertically inside a heat-insulating box (1), and the pre-cooling room (2) and the cold-holding room (3) are connected to a cold air communication port. (13), the storage part (7) for dry ice (11) is located in the pre-cooling chamber (2), and the regenerator (10) is stored and arranged in the pre-cooling chamber (2). Opening adjustment door (14) arranged corresponding to mouth (13)
(3) A cool box configured to be opened and closed by a temperature-sensing automatic opening and closing device (15) based on the temperature inside.