JPS62198327A - Apparatus for storing perishables - 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 the Invention The present invention relates to a fresh produce storage device that allows fresh produce such as vegetables and fruits to be stored for a long period of time at the production site or at the distribution stage.

Conventional technology Refrigeration is a common means of storing perishables, but in addition to this, there is storage that changes the air composition within the storage room as a longer-term storage method.

In other words, by reducing the oxygen (O2) concentration in the storage and increasing the carbon dioxide (Co2) concentration by 6 degrees, the respiration of fresh food is suppressed, and the deterioration caused by microorganisms.

It is known that chemical reactions such as decomposition and oxidation can also be prevented (hereinafter referred to as CA storage).

As a method of storing CA, for example,
As shown in Japanese Patent No. 12004, a gas generator is used to reduce the oxygen concentration in the storage by burning fuel containing carbon in a combustion device and introducing combustion exhaust gas into the storage, and to maintain the atmosphere in the storage to a predetermined level. It consists of a Co2 absorption tank (gas adjustment device) that adjusts the value.

On the other hand, in such perishables storage equipment (CA storage equipment), a cooling device is usually used to circulate cold air inside the warehouse, allowing perishables to be stored for a long time by cooling and adjusting the atmosphere.
For this purpose, it is desirable to adjust the atmosphere to a predetermined level immediately after the fresh produce is stored, and to cool the fresh produce in a stable atmosphere at all times.

Problems to be Solved by the Invention However, in the above-mentioned fresh food storage apparatus, the only way to check the storage status of stored items during CA storage is to open the door and take out the stored items to check. By opening the container, atmospheric air will enter the storage room, destroying the CA atmosphere and having an adverse effect on the stored items. In addition, by not checking the storage condition of stored items for several months, it is impossible to prevent stored items from spoiling due to errors in the composition of the atmosphere inside the warehouse, resulting in a large amount of damage.

Therefore, in view of the above-mentioned problems, the present invention aims to provide a fresh produce storage device that allows checking the storage condition of stored products in an extremely simple manner without changing the CA atmosphere in the storage room even during CA storage. It is.

Means for Solving the Problems In order to solve the above-mentioned problems, the perishables storage device of the present invention includes at least two small doors formed of transparent material on a portion of the front surface of the storage door, and each A storage status confirmation chamber is provided on the storage side of the small door, and the surface facing the small door of each storage status confirmation chamber has a number of communication holes that communicate with the inside of the storage unit in conjunction with the opening/closing handle provided on each of the small doors. Each hole is equipped with a shutter that closes it.

Function: With the above-described configuration, the present invention allows the storage state of stored items to be checked visually and by touch without disturbing the CA atmosphere inside the storage by opening a small door located in a part of the front of the door during CA storage. Therefore, by understanding the quality of stored items, it is possible to ship the stored items at an appropriate time and prevent damage caused by stored items spoilage.

EXAMPLE Hereinafter, a fresh food storage apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of a fresh produce storage device in an embodiment of the present invention.

In FIG. 1, reference numeral 1 indicates a storage such as a prefab refrigerator for storing perishables, and a compressor 2. condenser 3, evaporator 4,
A cooling device 7 consisting of a blower 6.6 is mounted on the top. The storage 1 includes a carbon dioxide gas generator 8 that fills the interior with carbon dioxide (Co2)', and a carbon dioxide adsorption device 9 that adsorbs excess carbon dioxide (Co2) in the interior and maintains it at a constant concentration. each connected. The carbon dioxide generator 8 is constructed between an inlet pipe 1o that introduces air in the storage 1 and an exhaust pipe 11 that discharges combustion gas into the storage 1, and includes a blower 12, a pulp 13, a combustion furnace 14, and a combustion exhaust gas. It consists of a cooler 16. The blower 12 guides the air inside the storage 1 to the combustion furnace 14 through the introduction pipe 1o, cools the combustion exhaust gas in the combustion furnace 14 with the cooler 16, and then circulates it into the storage 1 through the discharge pipe 11. The combustion furnace 14 also includes an inner casing 17 having a ceramic tube 16 on its inner surface, an outer casing 19 with an air passage 18 formed between the inner casing 17 and the inner casing 17 for supplying secondary combustion air, and a It is composed of a grate 21 on which the fuel 2o is placed, and an ignition heater 22 for heating the air from the blower 12 to combust the solid fuel 2o. solid fuel 2
0 is carbon with high purity like charcoal, and carbon is released by combustion.
Due to the reaction +020N2→CQ2+N2, the combustion exhaust gas becomes only carbon dioxide (Co2) and nitrogen (N2) and is introduced into the storage 1. 23 is a pulp for introducing air for combustion assistance from the outside air.

On the other hand, in the carbon dioxide gas adsorption device 9, the gas composition in the storage chamber 1 is changed to N2; 7 s% by the carbon dioxide gas generation device 8.

When Co2; 1e%, 02; s% is reduced, excess carbon dioxide gas (Co.) is adsorbed to a predetermined value, for example, N2: 9o%, Co2: s%, 02: 5%, and stored in a storage. 1. It is for discharging outside. The inlet pipe 2 is connected to the two adsorbers 24 and 25 so that the gas in the storage 1 is alternately circulated.
6, discharge pipe 27, blower 28, pulp 29~. It consists of 36 pieces. Inside the adsorber 24.25, an adsorbent 37.
38 is filled with carbon dioxide gas (Co2)', and when the adsorption capacity decreases, the heater 40 installed on the discharge side of the blower 39 is heated to blow hot air all over the pulp 33, 35.
Air is blown through an inlet pipe 41 led to the adsorber 24, 26 via a valve 3436 to desorb carbon dioxide, and the carbon dioxide gas is discharged to the atmosphere through an exhaust pipe 42 led to the atmosphere via a valve 3436. For example, the adsorber 24 has an adsorption effect, the adsorber 25
When the valves 29, 30, 33 .
34 is open, and valves 31, 32, 35, 36 are closed, and the blower 28 passes the excess carbon dioxide (Co2) in the storage 1 through the adsorbent 37 of the adsorber 24 to adsorb carbon dioxide. On the other hand, outside air heated by the heater 4o by the blower 39 is transferred to the adsorber 2.
Carbon dioxide gas is desorbed by passing it through the adsorbent 38 of No. 5. 43 is a connecting pipe that connects the discharge pipe 11 and the introduction pipe 26. 44°, 45.46 are valves, respectively, and discharge pipes 11. Introductory tube 26. It is provided in the connecting pipe 43 to change the circulation route. Figure 2 shows JB4 in storage 1.
7 is a detailed diagram. Two storage status confirmation chambers 48 and 54 are attached to s47, and there are small J360 and 55 made of transparent material on the front side of the door 47 of the storage status confirmation chamber 48 and 54. 1 Storage status confirmation room 48.54
A large number of small communication holes 49 are provided on the surface facing the small door 50.55 so that the atmosphere in the membrane storage status confirmation chamber 48.54 becomes the same as the atmosphere inside the storage chamber 1. Handle 53.56 used to open and close door 50.55
The storage status confirmation chamber 48.54 and the storage 1 are shut off and communicated with each other by the shutter 52.67 which is interlocked with the shutter 52.67.

The operation of the fresh food storage device configured as described above will be explained.

The atmosphere inside storage 1 was initially N2; y 9% + 02
; When the carbon dioxide generator 8 is operated, the air inside the refrigerator is introduced from the introduction pipe 10 by the blower 12, passes through the valve 13, and is introduced into the combustion furnace 14.
The solid fuel 20 is heated by the ignition heater 22 and used for combustion. Due to the reaction of C+O2+N2→C02+N2, the exhaust gas becomes only carbon dioxide (Co2) and nitrogen (N2), which are cooled by the cooler 16 and then circulated into the storage 1 through the discharge pipe 11. The gas composition in storage 1 is oxygen (02”)
The temperature will drop by 6 degrees, and the concentration of carbon dioxide (Co2) will increase. After 2 hours and 30 minutes, Sult, N2; 79%, Co2;
s%, 02; 1a%tonari, predetermined no.fie, N
2; 90%, Co2; 5%.

0 ・6chi, carbon dioxide gas (Co2) reaches the predetermined 62
' The gas monitor 62 detects that the
4 is closed, and at the same time, the valve 46 is opened and the exhaust gas is introduced into the carbon dioxide adsorption device 9 through the connecting pipe 43.

At the same time as the valve 44 is closed, the valves 29 and 30 are opened and introduced into the adsorber 24 by the blower, only carbon dioxide (CO) is adsorbed by the adsorbent 37 and nitrogen (N
Only 2) is returned into the storage 1 through the discharge pipe 27. The adsorbers 24 and 25 alternately repeat an adsorption action and a desorption action, and continuously adsorb carbon dioxide gas (Co2) in one of the adsorbers. Therefore, the carbon dioxide concentration in the storage 1 is maintained at 5. On the other hand, since the oxygen (02) concentration is being used for combustion during that time, it decreases and reaches the predetermined value of 6%. The gas monitor 49 detects this and stops the carbon dioxide gas generator No. 8. Now the predetermined o gas in storage 1 is concentrated tN2; 90%, C
o2: 5%, 02: 6%, and storage begins. During storage, the stored items 51.58 that have been placed in the storage status confirmation chamber 48.54 are stored in the same atmosphere as inside the storage 1 through the many small communication holes 49 inside the storage 1. Therefore, when checking the storage condition of stored items, it can be visually checked through the small door 50.55 of the door 47. Also, when opening the small door 50.55, the shutter 52.57 opens the storage status confirmation room 48.54 and the storage room 1.
Since the inside is shut off, the storage condition can be checked by opening the small door 50, 55, taking out the stored items 51, 58, and touching them with your hands without changing the atmosphere inside the storage 1. For example, the storage condition of stored item 61 was checked in the second month of storage, and the other stored item 68 was checked in the fourth month. You can check the storage status of stored items that have not been stored.

Also, when storing products of different quality with different storage periods in the same storage room, the storage conditions can be checked separately by placing the products of different types in each of the storage condition confirmation chambers 48°64. I can do it.

Effects of the Invention As described above, the present invention includes at least two small doors formed of transparent material in a part of the storage door, and a storage status confirmation chamber on the storage side of each small door.
Each of the small doors has a large number of communication holes on the surface facing the small door of each storage status confirmation room, and each small door has a shutter that closes the communication holes in conjunction with an opening/closing handle. During CA storage, the storage condition of stored items can be checked visually and by touch without disturbing the OA atmosphere in the storage, so the quality of single-quality and multi-quality stored items can be grasped, and the stored items can be checked at the appropriate time. It is possible to prevent damage caused by shipping and spoilage of stored items.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a fresh produce storage device according to an embodiment of the present invention, and FIG. 2 is a perspective view of the storage area. 1...Storage, 8...Carbon dioxide generator, 47...Door, 48.54...Storage status confirmation room, 60°65... ---Small door, 61.
58... Stored goods, 62°67... Shirt p-, 53, 56... Handle, 49...
...Communication hole.

Claims (1)

[Claims] A storage for storing perishables, a door provided on one side of the storage, and a carbon dioxide gas generating device for introducing carbon dioxide into the storage, and a part of the door of the storage has at least two
a plurality of small doors formed of transparent material; a storage status confirmation chamber on the storage side of each of the small doors; A perishables storage device comprising a large number of communication holes communicating with each other and a shutter that closes the communication holes in conjunction with an opening/closing handle provided on each of the small doors.