JPS62146531A - Fresh article storage apparatus - 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.

BACKGROUND OF THE INVENTION Refrigerated storage is a common means of storing perishables, but in addition to this, storage that changes the air composition within the storage room is a longer term storage method. In other words, by reducing the concentration of oxygen (02) and increasing the concentration of carbon dioxide (Co2) in the storage room, it suppresses the respiration of fresh produce, and also prevents chemical reactions such as decomposition and oxidation caused by microorganisms. is known to be possible. As a storage method, for example, as shown in Japanese Patent Publication No. 4B-24218 or No. 60-12004, air inside the storage is introduced into the storage using a combustion device, and combustion exhaust gas is introduced into the storage. Some reduce oxygen concentration and increase carbon dioxide concentration.

However, in the above-mentioned fresh produce storage device, in the initial stage when 002 is generated by the carbon dioxide gas generator, 802 etc. are generated due to Co due to incomplete combustion and sulfur contained in the fuel, so unnecessary gas is stored. It was not possible to create the desired atmosphere inside the warehouse.

Problems to be Solved by the Invention In such perishable product storage devices, the storage period of the stored products varies depending on the atmosphere of the storage room.

For example, for an apple, CO23'%, 023%, N
If the atmosphere is 294%, the quality can be maintained for 6 to 7 months, and if there is no CO24%, 0
The quality can be maintained for 5 to 6 months in an atmosphere of 25% N2 and 91% N2.

However, if Co or SO2 other than CO2 generated in the initial stage of the carbon dioxide gas generator is mixed into the atmosphere of the storage, there is a problem in that the retention period of the above-mentioned quality is significantly shortened.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a fresh produce storage device that does not contain impurities generated during the initial stage of combustion and can maintain the atmosphere within the refrigerator at a predetermined value.

Means for Solving the Problems In order to solve the above-mentioned problems, the perishables storage device of the present invention includes a storage for storing perishables, a combustion furnace for burning the fuel contained therein, and the combustion furnace is equipped with the fuel device. A discharge section is provided in a part of the introduction path from the combustion furnace of the carbon dioxide gas generating device to the storage for discharging the exhaust gas generated at the early stage of dawn to the outside of the storage.

Effect The present invention, with the above-described configuration, can create a predetermined atmosphere inside the refrigerator without introducing unnecessary gases generated in the initial stage of combustion into the refrigerator. An example will be explained based on the drawings.

In the figure, 1 is a storage such as a prefabricated refrigerator for storing fresh food, and 2 is a compressor. Condenser 3° Evaporator 4. A cooling device 7 consisting of blowers 5 and 6 is mounted on the top. Connected to the storage 1 are a carbon dioxide gas generator 8 for introducing carbon dioxide (CO2) into the storage, and a scrubber 9 for keeping the atmosphere inside the storage constant. The carbon dioxide generator 8 is configured between an exhaust path 10 through which air in the storage 1 circulates and an introduction path 11a through which combustion gas is introduced into the storage 1, and includes a valve 12-a, a blower 13 (for example, a sirocco fan) ) and a combustion furnace 14. A discharge part 11-b and a valve 12-b are attached to a part of the introduction path 11-a to direct the exhaust gas generated in the initial stage of combustion to the outside of the storage 1, so that a part of the combustion gas is removed by opening and closing the valve 12-b. The parts can be discharged to the outside without being sent into the warehouse through the discharge part 11-b. The blower 13 sends the air in the storage 1 to the combustion furnace 14 through the exhaust path 1o, and circulates the combustion exhaust gas from the combustion furnace 14 into the storage 1 through the introduction pipe 11. The combustion furnace 14 also includes a casing 16 with a ceramic tube 15 on its inner surface, a lid/cover 18 on which solid fuel is placed inside the casing 16, and a blower 13.
It is composed of an ignition heater 19 that heats the air from the engine and burns the solid fuel 17. The solid fuel 17 is a high-purity carbon material such as charcoal, which produces CO2 by combustion.
is generated as exhaust gas. In other words, due to the C102-Co2 reaction, only N2 and Co2 are partially introduced into the storage 1 from the exhaust gas. When the solid fuel is burned, the core temperature rises to about 900'C, and the exhaust gas also becomes high temperature, so a heat exchanger 20 for cooling is installed in the tube 11. Reference numeral 21 is a valve for introducing outside air in order to continue combustion of the solid fuel 17 when the O2 concentration from the exhaust pipe 11 is extremely low.
The atmosphere is N2 = 79%, Co2 = 16%, 02
: After reaching 5%, set a predetermined value, for example, N2=90%, C
It is used to adjust o2=s%, 0225%, etc., and piping 24.25, blower 26.27, air blower 26.27, etc. are used to alternately circulate the air inside the storage 1 to the two adsorbers 22.23.
Valves 28 to 3S are configured. Adsorber 22.23
The inside is filled with activated carbon 36°37, which adsorbs CO2, and if the adsorption capacity is poor, a heater 38 provided on the outer periphery,
39 to remove stones while heating. For example, when the adsorber 22 is performing adsorption and the adsorber 23 is performing desorption, valves 28.34 and 31.33 are activated.
, valves 29, 35, 30.
6 is passed through and returned to the inside of the refrigerator, while the outside air is passed through activated carbon 37 by a blower 27 to desorb Co2. Naturally, the heater 39 is energized during this attachment/detachment.

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

Initially, the atmosphere inside storage 1 was approximately N2=79%, o2-2.
1%, and when the carbon dioxide generator 8 is operated, the air inside the warehouse is introduced into the combustion furnace 14 via the pulp 12-a and the blower 13, and is used for combustion. Exhaust gas from the combustion of the solid fuel 17, that is, N 2 and CO 2 gases are introduced into the refrigerator.

However, in the initial stage of combustion, CO due to incomplete combustion and SO due to sulfur contained in solid fuel 17
etc. are generated, and in addition to N2 and Co2 gas, co,
Since SO2 and the like are contained, the pulp 12-b is opened and the exhaust gas is discharged to the outside facing the discharge part 11-b until combustion is stabilized and the exhaust gas becomes N2 and CO2.

When the exhaust gas becomes N 2 and CO 2 , the pulp 12-b is turned off and the exhaust gas is introduced into the warehouse through the introduction path 11.

As a result, O2 decreases and Co2 increases as an air component in the storage 1.

In this type of fresh food storage device, unnecessary gases such as Co and S02 generated during the initial stage of combustion can be discharged to the outside without introducing them into the storage, so the inside of the storage can be kept within a specified range. It is something that can create a great atmosphere.

Effects of the Invention As described above, the present invention includes a storage for storing perishables, a combustion furnace for burning fuel containing carbon, supplying air for combustion of the fuel to the combustion furnace, and supplying combustion exhaust gas to the storage. A carbon dioxide gas generating device consisting of an air blowing device is provided, and a discharge section for discharging exhaust gas generated at the initial stage of fuel combustion to the outside of the storage is provided in a part of the introduction path of the carbon dioxide gas generating device from the combustion furnace to the storage. Since this is a perishables storage device, unnecessary gases generated during the initial stage of combustion can be released to the outside without entering the storage, and the atmosphere inside the storage can be reduced to CO2, O2, etc. This can be set as N2.

[Brief explanation of drawings]

The figure is a configuration diagram of a fresh produce storage device that is an embodiment of the present invention. 1...Storage, 8...Carbon dioxide gas generator, 11-b... Discharge section, 12-b...
・Pulp, 13...Blower, 14...Combustion furnace.

Claims (1)

[Claims] Carbon dioxide gas comprising a storage for storing perishables, a combustion furnace for burning fuel containing carbon, and a blower for supplying air for combustion of the fuel to the combustion furnace and introducing combustion exhaust gas into the storage. What is claimed is: 1. A perishables storage device comprising: a combustion furnace of the carbon dioxide gas generating device and a part of the introduction path to the storage, including a discharge section for discharging exhaust gas generated at the initial stage of combustion of fuel to the outside of the storage.