JPS63135765A - Low-temperature insulating panel and low-temperature insulating box - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a cold insulation panel and a cold storage box using this cold insulation panel.

More specifically, for example, a cold insulation panel for forming a freezer, a refrigerator, etc. for preserving fresh foods in a frozen state or storing them at low temperatures, and a cold insulation panel formed using this cold insulation panel. For example, it relates to a cold storage box for carrying food and drinks in a refrigerated state.

"Prior Art", [Problems to be Solved by the Invention] Conventional freezers, refrigerators, etc. are mainly formed of heat-insulating panels with a core made of foamed plastic material such as foamed urethane. The internal temperature was kept approximately constant.

Therefore, since the inside of the refrigerator is isolated from the outside air by the insulation panel, which has the function of a heat insulating material, it has the effect of preventing the temperature inside the refrigerator from rising, but since the insulation panel itself does not have a cooling function, it depends on the season of use. Depending on the location of the stack, the operating time of the cooling device, etc. may be almost all day long, resulting in an increase in power consumption and a heavy economic burden.

In addition, in the case of large freezers, etc., a large size and high-strength thermal insulation panel is required, but in order to form a high-strength thermal insulation panel, the rigidity of both surface plates that sandwich the foamed plastic material must be As a result, the weight of the heat-insulating panel inevitably becomes heavy, and various drawbacks due to the increased weight have been pointed out.

In addition, conventionally, cold boxes have been made of foamed plastic materials such as foamed urethane, or heat insulation panels that have a foamed plastic material as a core material and cover both sides with decorative boards such as plastic boards. Ta. Therefore, for example, when transporting food and drinks in a refrigerated state, it is necessary to put ice, dry ice, or other refrigerant together with the food and drinks, and use these refrigerants to refrigerate the food and drinks. Ta.

Therefore, in order to refrigerate food and drinks for a long period of time, a large amount of refrigerant is required, and since the refrigerant takes up a large amount of space, there is a problem in that the storage capacity of food and drink to be refrigerated is severely limited. was. In addition, since cold boxes are constructed with an emphasis on lightness for ease of portability, for example, even if the cold box is made of a heat-insulating panel covered with a foamed plastic material with a decorative board, The plate has a thin thickness and therefore is easily damaged when subjected to impact.

The present invention has been made in view of the above-mentioned circumstances, and aims to be a freezer or refrigerator that is lightweight and has excellent rigidity, and further has a cooling function in the panel itself once frozen and cooled. By using a cold insulating panel for forming a refrigerator, etc., it is possible to effectively utilize the storage space without sacrificing lightness and even when refrigerating food and drinks for a long time. Our objective is to propose a cold storage box with excellent impact resistance.

[Means for solving the problem] The present invention has been made to achieve the above object, and the technical solution thereof is as follows.

The first invention provides a honeycomb panel constituting a main body formed by closing the open peripheral end surface portion of the honeycomb core with an edge material and sealing both open ends of each cell of the honeycomb core with a surface plate. A predetermined amount of refrigerant material is sealed in each cell of the honeycomb core.

In a second invention, in a cold storage box equipped with an openable and closable lid, at least a portion of each panel-like member constituting the cold storage box in the thickness direction has the structure of the first invention. It is constructed of cold insulation panels.

"action" Since the present invention comprises the above means, it operates as follows.

In other words, the main body of the cold storage panel is made of a honeycomb panel that is lightweight and has excellent rigidity, and a predetermined amount of refrigerant material is sealed in each cell of the honeycomb core that constitutes the core material of the honeycomb panel. Therefore, once it is frozen and cooled, the cold insulation panel itself has a cooling function by the frozen and cooled refrigerant material.
In the case of refrigerators and the like, it is possible to shorten the operating time of cooling devices and the like. Further, even if the cold insulation panel is large in size and has high strength, the weight of the cold insulation panel will not increase significantly because the main body of the cold insulation panel is composed of a honeycomb panel. Furthermore, since a predetermined amount of refrigerant is sealed in each independent cell, even if the cold storage panel is used vertically, the refrigerant will naturally flow down and accumulate in the lower part, providing cooling functionality. is not uneven from part to part.

Next, in a cold storage box using such a cold insulation panel, it is possible to use refrigerant materials such as ice and dry ice without any loss in weight and even when refrigerating food and drinks for a long time. Since only a small amount is required, the storage space can be used effectively, and therefore a large amount of food, drinks, etc. can be refrigerated. Furthermore, since at least a portion of each of the panel-shaped members constituting each part of the cold box is constituted by a cold insulation panel in the thickness direction, the present invention has excellent impact resistance compared to the conventional example.

[Example 1] The present invention will be described below based on an example thereof shown in the drawings.

First, the cold insulation panel will be explained based on FIG.

1 is a cold insulation panel, and this cold insulation panel 1 is constructed as follows. That is, 2 is a honeycomb panel that constitutes the main body portion of the cold insulation panel 1, and this honeycomb panel 2 has a honeycomb core 3 that constitutes its core material, and the open peripheral end surface of the honeycomb core 3 is formed to have a height equal to the thickness of the honeycomb core 3. Both sides of the honeycomb core 3,
That is, each cell 3a, 3a in the honeycomb core 3
It is formed by sealing both open ends of .

6.6... each cell 3a in the honeycomb core 3.

3a... is a refrigerant material such as an aqueous ethylene glycol solution (10% or less), and these refrigerant materials 6.6... are those whose volume changes with temperature changes. , are enclosed in the cells 3a, 3a, .

The cold insulation panel 1 is configured as described above.

Next, a cold insulation box formed using the cold insulation panel 1 having the above-mentioned configuration will be explained.

In FIG. 2, 10 is a cold box, and this cold box 10 is constructed as follows. That is,
Reference numeral 11 denotes a box-shaped main body, and each wall portion 12 of this main body 11
．． Each of the panel-like members constituting the wall sections 12, 12... and the floor section 13 is formed of a cold insulation panel 1.1..., and the connecting portion of each wall section 12, 12... and the floor section 13 is They are fixed via connecting members 14, 14, . . . .

Reference numeral 16 denotes a lid formed of the cold insulation panel 1 for opening and closing the upper opening 15 of the main body 11, and the lid 16 is attached to the wall 12 via a hinge 17.

Therefore, according to this embodiment, since the panel-like members 12, 13, 16 constituting the cold box 10 are all formed by the cold insulation panels 1.1..., a strong cold box 10 can be obtained. I can do it.

FIG. 3 shows a second embodiment of the cold box, and the cold box 10a in this embodiment is constructed as follows. That is, each panel-shaped member forming the wall portions 12a, 12a, . The cold box 10a is formed by attaching the heat insulating panels 20 of these panel-like members to the outside.

Note that 18 is a mounting member for the hinge 17 formed to have the same thickness as the heat insulating panel 20.

Therefore, according to the cold box 10a in this embodiment, the outer peripheral surface of the cold box 10a is connected to the heat insulating panel 20.
It is possible to refrigerate food and drinks through the synergistic action of the cold insulation panel 1 and the heat insulation panel 20. Therefore, since it is possible to reduce the thickness of the cold insulation panel of each panel-shaped member, it can be manufactured at a lower cost than in the first embodiment.

In addition, in the above-mentioned second embodiment, the structure in which the cold box 10a is formed by each panel-like member in which the heat insulating panel 20 is attached to one side of the cold insulation panel 1 was explained in advance. The configuration of 11a may be such that an inner box-like body formed of the cold insulation panel 1 is fitted into an outer box-like main body formed of the heat insulating panel 20.

Moreover, the configuration of each panel-like member forming the cold box may be such that the heat insulating panels 20 are attached to both sides of the cold insulation panel 1.

The cold box is constructed as described above.

The cold insulation panel 1 according to the present invention has a honeycomb core 3 that constitutes the core material of the honeycomb panel 2 that constitutes the main body.
Since the cold storage panel 1 has a cooling function by itself once it has been frozen and cooled, the cold storage panel 1 For freezers, refrigerators, etc. formed in 1.
It is possible to reduce the operating time of the cooling device, thereby reducing power consumption.

In addition, the honeycomb panel 2 constituting the main body part of the cold insulation panel 1 mainly sets the cell size of the honeycomb core 3 constituting the core material, the material forming the honeycomb core 3, etc.
Since it is possible to obtain a honeycomb panel 2 with a desired strength by selecting the desired strength, even if the cold insulation panel 1 is large and requires high strength, its weight will not be particularly heavy.

Next, in the cold storage box 10.10a formed using the cold insulation panel 1, even when refrigerating food and drinks for a long time, the temperature of the refrigerant material such as ice and dry ice is low. Since only a small amount is required and the storage space can be used effectively, large-sized foods and drinks can be refrigerated.

For example, when transporting fresh fish, etc., the fish is packed in the cold box 10.10a after being caught and frozen in that state, thereby eliminating the need to repack the fish at a fish port, etc. Therefore, there is no need to pack or replenish ice, dry ice, or other refrigerant materials associated with refilling, so efficient transportation becomes possible.

"Effect of the invention J As detailed above, according to the cold insulation panel according to the present invention,
Once frozen and cooled, the cold storage panel itself has a cooling function, so for example, in freezers, refrigerators, etc. formed with such cold storage panels, it is possible to shorten the operating time of the cooling device, etc. It is highly economical because power consumption can be reduced. In addition, even if the cold storage panel is large and has high strength,
Since it is extremely lightweight compared to conventional heat retaining panels of the same strength, it is possible to eliminate various problems caused by the heavy weight of conventional heat retaining panels.

Moreover, according to the cold storage box formed using such a cold storage panel, the following 1. Even when the cold storage box is used without freezing or cooling, if it is cooled, only a small amount of refrigerant is needed to put it together with the food and drinks that should be refrigerated, and the storage space can be used effectively. Compared to conventional cold storage boxes, it can refrigerate people's food and drinks. Furthermore, compared to conventional cold storage boxes, it exhibits superior effects such as superior impact resistance.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a vertical cross-sectional view of the main parts of an embodiment of the cold insulation panel, and FIG. 2 is a longitudinal cross-section of the main parts of the first embodiment of the cold storage box. 3 are longitudinal cross-sectional views of essential parts showing a second embodiment of the cold box. 1... Cold insulation panel, 2... Honeycomb panel, 3...
・Honeycomb core, 3a... Cell, 4... Edge material, 5.
...Surface plate, 6...Refrigerant material, 10.10a...Cool box, 11.11a...Main body, 12.12a...
・Wall part, 13.13a... Floor part, 14... Connection member, 15... Opening part, 16.16a... Lid body, 17.
...Hinge, 20...Insulation panel. Patent applicant Showa Aircraft Industry Co., Ltd. Agent Masami Kamo Shimo No. 30 13a

Claims (2)

[Claims] (1) The above-mentioned honeycomb panel constituting a main body formed by closing the open peripheral end surface of the honeycomb core with a border material and sealing both open ends of each cell of the honeycomb core with a surface plate. A cold storage panel characterized in that a predetermined amount of refrigerant material is sealed in each cell of a honeycomb core. (2) In a cold box equipped with an openable and closable lid,
At least a part of each of the panel-like members forming the cold storage box in the thickness direction is closed with an edge material at the open peripheral end surface of the honeycomb core, and with a surface plate on both open ends of each cell of the honeycomb core. A cold storage box comprising a cold insulation panel in which a predetermined amount of refrigerant material is sealed in each cell in the honeycomb core of a honeycomb panel constituting a main body formed by sealing.