JPH06169691A - Method for preserving cherry for long period and apparatu therefor - Google Patents

Abstract

PURPOSE:To provide a method for preservation in which housed cherries can be preserved in their harvested state for a long period and an apparatus for carrying out the method. CONSTITUTION:Cherries are housed in a preservation chamber 1 having heat insulating and water holding properties in a hermetically sealed state and the interior of the preservation chamber is always kept respectively at about 4 deg.C temperature and about 85% relative humidity to preserve the moisture content of the housed cherries within the range of 90-92%. The moisture content of the cherries is measured at a suitable interval of time to correct the relative humidity and carry out the forced circulation and replacement of indoor air. Thereby, ethylene is removed and discharged and indoor adhesive waterdrops are removed to inject a mixed gas of gaseous carbon dioxide with nitrogen at 4-5% ratio to fresh air into the preservation chamber. As a result, the housed cherries are prevented from naturally fermenting, putrefying and discoloring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for long-term storage of cherries in fresh.

[0002]

2. Description of the Related Art With almost no storage means for cherries, not only public test stations but also general producers do not support it. is there. And preservation by this means is at best 10-1
There is a problem that the limit is 5 days, and when it is exceeded, it is rapidly damaged and exhibits a blackish brown color, which impairs the taste and remarkably lowers the commercial value.

[0003]

DISCLOSURE OF THE INVENTION According to the present invention, the humidity and temperature which match the condition of the cherries are automatically given to the indoor air of the storage room containing the cherries, and the ethylene generated from the cherries is forcibly removed by the wind. In addition, the present invention provides a method for removing water droplets adhering to a room, injecting an appropriate amount of carbon dioxide gas and nitrogen, and storing the stored cherries for a long time at the time of harvesting, and an apparatus for carrying out the method. .

[0004]

In order to solve the above-mentioned problems, the present invention stores cherries in a hermetically-sealed storage chamber having heat insulation and water retention. The storage room always keeps the room temperature around 4 ° C. and the relative humidity around 85% to store the water content of the stored cherries in the range of 90 to 92%. In addition, the water content of the cherries is measured at appropriate intervals to correct the relative humidity, and the indoor air is forcedly circulated and replaced to remove and discharge ethylene, as well as to remove water droplets adhering to the room. Then, a mixture of carbon dioxide gas and nitrogen is injected at 4 to 5% of fresh air. This prevents natural fermentation, spoilage, and discoloration of the stored cherries to achieve long-term storage.

In order to carry out the method, a closed storage chamber 1 formed by surrounding a water-retaining material 3 with a heat insulating material 2 lined therein is constructed. A refrigerator 4, a humidifier 5, and a fan with a heater 6 are provided on the side wall thereof. Separately, a main duct 7 having a blower 8 for controlling forced circulation / replacement of indoor air is provided, and the main duct 7 has an ethylene removing device 9 in an inner middle thereof and an outside air intake port 10 with a switching valve 11 and The carbon dioxide and nitrogen inlets 12 and 13 are exposed. On the other hand, in the storage chamber 1, injection ports 1 are provided at predetermined intervals.
5 through the branch duct 14 provided with the main duct 7.
Of the air outlet 7a. And the refrigerator 4, the humidifier 5, the fan 6 with a heater, and the blower 8 of the main duct 7,
Temperature detector 16 and humidity detector 1 installed in the storage room 1
7. Conservation room 1
The control distribution board 19 installed on the outside of the side wall is linked to operate under the same command, so that a device capable of immediately responding to changes in outside air temperature, humidity, and stored cherries is configured.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and an apparatus for carrying out the method will be explained based on the preferred embodiment shown in the accompanying drawings. In FIG. 1 and FIG. 2, 1 is a heat insulating material lined with a water retentive material 3. Closed storage chamber 1 formed by surrounding with material 2
And has a door 1a. A refrigerator 4, a humidifier 5, and a fan with a heater 6 are provided on the side wall thereof. Separately, a main duct 7 provided with a blower 8 that controls forced circulation / replacement of indoor air is provided. This main duct 7 has an ethylene removal device 9 consisting of an activated carbon layer in the middle of the inside thereof and an outside air intake port 10 with a switching valve 11 and carbon dioxide and nitrogen injection ports 12 and 13. 20 is a carbon dioxide cylinder,
21 is a nitrogen cylinder. A branch duct 14 provided with injection ports 15 at predetermined intervals is provided around the floor in the storage chamber 1 and is connected to the air outlet 7a of the main duct 7. The refrigerator 4, the humidifier 5, the fan 6 with a heater, and the blower 8 are connected to a temperature detector 15, a humidity detector 16 and a cherries moisture detector 18 installed in the storage chamber 1, respectively.
The indoor temperature of the control room is set to 4 times by the coordinated operation of the control switchboard 19 installed outside the side wall of the storage room 1.
The relative humidity is kept near 85% and the water content of the stored cherries is kept in the range of 90 to 92% at around ° C.

[0007]

That is, in order to store cherries with this apparatus, the cherries are put in a container having a predetermined volume having a ventilation gap and stored in the storage chamber 1 in a stacked state. Then, the main switch of the control switchboard 19 is turned on. As mentioned above, the room temperature is preset to around 4 ° C and the relative humidity to around 85%, but if the room temperature rises during storage and the temperature of the cherries themselves rises (heat of vaporization), When the detector 15 detects and operates the refrigerator 4, and when the humidity becomes insufficient, the humidity detector 16 detects and operates the humidifier 5 to prevent water shortage, and conversely when the humidity becomes excessive. When the humidity detector 16 senses, the fan 6 with a heater is operated to raise the ventilation temperature, open the difference from the absolute temperature for drainage and discharge, and satisfy the appropriate temperature and humidity conditions within the above-mentioned set range. Thus, the water content of the stored cherries is 90%.
˜92%, but on the other hand
The cherry moisture detector 18 measures the moisture of the cherries at appropriate times to correct the relative humidity, and intermittently forcibly circulates and replaces the indoor air to expel the ethylene generated from the cherries and remove the water droplets adhering to the indoors. Removed,
In addition, the mixture of carbon dioxide and nitrogen was compared with fresh air by 4-5.
%inject. In this way, it prevents natural fermentation, decay, and discoloration of the stored cherries, and enables long-term storage and shipping of the cherries.

[0008]

Industrial Applicability As described above, the present invention shields cherries from the outside air and constantly maintains a suitable temperature around 4 ° C and a relative humidity around 85% suitable for storing fresh food. When it is detected, the refrigerator, humidifier, and heater fan are activated to perform automatic adjustment. On the other hand, the indoor air is intermittently forcedly circulated and replaced to remove and discharge ethylene generated from the cherries. In addition, it removes water droplets adhering to the inside of the room and also injects a mixture of carbon dioxide and nitrogen at 4 to 5% of the fresh air to suppress natural fermentation of cherries and prevent spoilage and discoloration. It becomes possible to maintain freshness at the time of harvest for a month. When the applicant conducted an experiment, the results shown in the following table were obtained.

[0009]

[Table 1]

As is clear from the above table, the present invention is extremely advantageous as it can be expected to have the desired effects.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an apparatus for carrying out the present invention.

FIG. 2 is a vertical side view of an apparatus for practicing the present invention.

FIG. 3 is a schematic plan view of an apparatus for carrying out the present invention.

[Explanation of sign]

 1 Storage Room 2 Heat Insulation Material 3 Water Retaining Material 4 Refrigerator 5 Humidifier 6 Heater Fan 7 Main Duct 7a Air Outlet 8 Blower 9 Ethylene Removal Device 10 Outside Air Intake 11 Switching Valve 12 Carbon Dioxide Inlet 13 Nitrogen Injection port 14 Branch duct 15 Injection port 16 Temperature detector 17 Humidity detector 18 Cherry moisture detector 19 Control switchboard

Claims (2)

[Claims] 1. A cherry is stored in a hermetically-sealed storage chamber having heat insulation and water retention, and the storage chamber is always stored with the room temperature kept at about 4 ° C. and the relative humidity kept at about 85%. Correct the relative humidity by storing the water content of cherries in the range of 90-92% and measuring the water content of cherries at appropriate intervals.
Forced circulation / replacement of indoor air removes and discharges ethylene, removes water droplets adhering to the room, and injects a mixture of carbon dioxide and nitrogen at 4 to 5% of fresh air, thereby naturally fermenting and spoiling stored cherries. , A long-term storage method for cherries, which is characterized by preventing discoloration. 2. A refrigerator 4, a humidifier 5, and a fan with a heater 6 are provided on a side wall of a hermetically-sealed storage chamber 1 formed by surrounding a water-retaining material 3 with a heat insulating material 2 and separately provided. A main duct 7 having a blower 8 for controlling forced circulation / replacement of indoor air is provided, and the main duct 7 has an ethylene removing device 9 in an inner middle thereof and an outside air intake port 10 with a switching valve 11 and carbon dioxide gas. Nitrogen inlet 12, 1
3, the other side of the storage chamber 1 is connected to the outlet 7a of the main duct 7 by circling a branch duct 14 provided with injection ports 15 at a predetermined interval to connect the refrigerator 4, the humidifier 5, and the heater. A control installed on the outside of the side wall of the storage chamber 1 by connecting the fan 6 with the rotary fan 6 and the blower 8 of the main duct 7 to the temperature detector 16, the humidity detector 17 and the cherry moisture detector 18 installed in the storage chamber 1 respectively. An apparatus used for carrying out the long-term storage method of cherries according to claim 1, wherein the distribution board 19 is operated in cooperation under the same command so as to be able to immediately respond to changes in outside temperature, humidity and changes in stored cherries.