JPH0494617A - Apparatus for storing perishables - Google Patents

Abstract

PURPOSE:To increase the amount of removed ethylene in a storehouse without exerting a bad influence on perishables by providing an ethylene adsorber for adsorbing the ethylene in the storehouse and a humidifying means located on the downstream side of air circulation leading to the storehouse. CONSTITUTION:The interior of a storehouse 1 is provided with an ethylene adsorber 196 containing an ethylene adsorbent 97 for adsorbing ethylene and bubbling is carried out with a water-sealed trap 200 installed on the downstream side of air circulation leading to the storehouse 1 to humidify and supply moisture thereto. Excessive gaseous carbon dioxide in the storehouse 1 is circulated through a gaseous carbon dioxide adsorber 102 and the removed moisture is simultaneously supplied with the water-sealed trap 200.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application 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, a longer term storage method involves changing the air composition within the storage room. In other words, by reducing the oxygen concentration in the storage and increasing the carbon dioxide concentration, it is possible to suppress the respiration of fresh produce and also to prevent chemical reactions such as decomposition and oxidation caused by microorganisms. It has been known.

Referring to the drawings below, this conventional Japanese Patent Application Laid-open No. 63-
Publication No. 201407 will be explained with reference to FIG. 6.

In the figure, 1 is a storage such as a prefaf refrigerator for storing perishables, and a compressor 2. Condenser 3° Evaporator 4. A cooling device 7 consisting of blowers 5 and 6 is mounted on the top.

The storage 1 includes a carbon dioxide gas generator 8 for filling carbon dioxide gas CQ2 into the layer, and a carbon dioxide adsorption device 9 for adsorbing and removing excess carbon dioxide gas Co2 in the combustion gas.
is connected. The carbon dioxide gas generator 8 is configured between an introduction pipe 1o that introduces air in the storage 1 and a connecting pipe 11 that leads the combustion gas generated here to the carbon dioxide adsorption device 9, and is connected to the combustion furnace 12. Catalyst tube 13. It is composed of a preheater 14 and a cooler 16. 16 is a blower, which is installed in the connecting pipe 11 between the cooler 15 and the carbon dioxide adsorption device 9;
The air inside the storage 1 is transferred from the introduction pipe 1o to the carbon dioxide gas generator 8.
The carbon dioxide gas is introduced into the carbon dioxide adsorption device 9 through the connecting pipe 11. The combustion furnace 12 includes an inner casing 18 having a heat insulating pipe 17 on its inner surface, and an outer casing having a heat insulating pipe 20 on its inner surface forming an air passage 19 between the inner casing 18 and the inner casing 18 for supplying secondary combustion air. 21 and solid fuel 2 in the insulated pipe 17.
2, and an ignition heater 24 provided at the bottom of the grate 23 to heat the combustion air and combust the solid fuel 22. The inner casing 18 and the outer casing 21 partition the air passage 19 into upper and lower sections with a partition plate 26. Reference numeral 26 denotes a branch part for the combustion air to be circulated to the combustion furnace 12. This branch part 26 and the lower part of the combustion furnace 12 are connected by a connecting pipe 27.
It is connected to the upper part of the air passage 19 of No. 2 through a connecting pipe 28.

The solid fuel 22 is made of highly pure carbon and is converted to C+ by combustion.
Due to the reaction of 020N2→C○2+N2, the combustion gas becomes carbon dioxide gas C○2 and nitrogen N2.

Reference numeral 29 is a connecting pipe for guiding combustion gas from the combustion furnace 12 to the catalyst tube 13, and has a heat insulating pipe 3o on the inner surface.

The catalyst tube 13 is provided with a filter 33 from above and two catalysts 34 below the filter 33 in a casing 32 provided with a heat insulating tube 31. 35 is a heater for heating the catalyst, and is installed between the two catalysts 34. Reference numeral 36 denotes a connecting pipe that leads the combustion gas from the catalyst pipe 13 to the preheated N14, and is provided with a heat insulating pipe 37 on the inner surface. The preheater 14 includes a heat exchanger 4o inside a casing 39 that includes an insulated pipe 38. The heat exchanger 4o is
It is composed of a plurality of pipes 41 and a plurality of fins 42 arranged so that air flows in a meandering manner on the outside of the pipe.

The combustion gas that has been circulated through the catalyst tube 13 passes through the pipe of this heat exchanger 4o, and the air inside the storage 1 introduced through the inlet pipe 1o is passed through the upper inlet 43 on the outside of the pipe.
The outside of the pipe is meandered and circulated up to the lower outlet part 44, and the connecting pipe 45 connected to the outlet part 44 connects the branch part 26.
It is connected to Reference numeral 46 is a connecting pipe that guides the combustion gas from the preheater 14 to the cooler 16. 47 is a cooling fan for the cooler.

On the other hand, the carbon dioxide adsorption device 9 is for adsorbing excess carbon dioxide CO2 in the combustion gas and discharging it outside the storage 1. Further, when carbon dioxide gas generated by the respiration of fresh food during storage exceeds a set value, it is adsorbed and discharged outside the storage 1. At the same time, ethylene generated by respiration is also adsorbed and discharged to the outside of the storage 1. Introductory pipes are installed so that the combustion gas alternately circulates between the two adsorbers 48°49! 0,51. Discharge pipes 52, 53. Switching pulp 54
．． It consists of 55. The adsorbers 48, 49 are filled with adsorbents 56, 57, which adsorb carbon dioxide (CO2), and when the adsorption capacity decreases, a blower 68 switches the outside air to the pulp 69. The adsorber 48 or 4 is passed through the inlet pipe 6o or 61 connected to the discharge pipe 52,53.
9 to desorb carbon dioxide gas, and then to the inlet pipe 60 or 5.
1, the discharge pipes 62, 63. It is configured to be exhausted to the atmosphere through an exhaust pipe 65 through a switching pulp 64.

For example, when the adsorber 48 is acting as an adsorbent and the adsorber 49 is acting as a desorber, the switching pulp 54. Adsorber 48. The switching pulp 59 , 64 is open in the direction of flow through the discharge pipe 52 , and the switching pulp 59 , 64 allows outside air to pass through the inlet pipe 61 . Suction booster49. It passes through the exhaust pipe 63, opens in the flow direction, and is exhausted to the atmosphere through the exhaust pipe 66. The exhaust pipe 66 connects the switching pulp 65 and the storage. Reference numeral 67 is a switching pulp installed in the introduction pipe 10 and having one side open to the atmosphere. 68 is a switching pulp and is provided between the cooler 15 and the blower 16;
And the connecting pipe 69 connects the introduction pipe 1o and the switching pulp 68.
is connected. Reference numeral 70 denotes a controller that controls the air volume of the blower 16, and the air volume is determined by a signal from a gas monitor 71 that detects the gas concentration in the storage 1. A2 is a chamber, which is a container provided in the introduction pipe 10 between the storage 1 and the switching pulp 67, and the gas monitor 7.
1 sampling tube 73 is connected.

Problems to be Solved by the Invention However, with the above configuration, the amount of ethylene generated by the respiration of stored perishables is removed is small, so perishables that generate a large amount are particularly affected. It had

In addition, when carbon dioxide exceeds a set value due to the respiration of fresh produce during storage, it is adsorbed and discharged outside the storage.The moisture inside the storage is also adsorbed by the adsorbent and is discharged outside the storage in the same way as carbon dioxide. Ru. As a result, the humidity inside the storage room decreases, and a humidity sensor (not shown) detects this and operates a humidifier installed inside the storage room to humidify the room. However, in order to adsorb carbon dioxide gas, the gas inside the storage chamber is circulated using a blower, but due to the large amount of circulation, the humidifying capacity is insufficient.
The problem has been that the moisture contained in fresh produce evaporates and its weight is reduced.

In view of the above-mentioned problems, the present invention provides a fresh produce storage device that increases the amount of ethylene removed in the storage and makes it possible to humidify water equivalent to the amount of water absorbed and removed by the adsorber, and which does not have a negative impact on fresh produce. This is what we provide.

Means for Solving the Problems In order to solve the above-mentioned problems, the fresh produce storage device of the present invention includes an adsorber containing an ethylene adsorbent that adsorbs ethylene in the storage and an adsorber installed downstream of the air circulation leading to the storage. It is equipped with a humidifying means.

Effects of the present invention With the above-described configuration, the air in the storage can be periodically circulated through the ethylene adsorber to be adsorbed and removed, thereby suppressing the amount to a certain amount or less, and also suppressing excess carbon dioxide in the storage. The moisture that is removed at the same time when it is circulated through the carbon dioxide adsorption device and removed by adsorption is humidified by a humidifying means provided on the downstream side of the air circulation leading to the storage, so that it does not adversely affect the fresh produce.

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 the description, parts that are the same as the conventional one will be given the same numbers, and parts that are different from the conventional one will be given numbers starting from 101.

In FIG. 1, 1 is a storage such as a pre-fabricated refrigerator for storing perishables, a compressor, a condenser 3, an evaporator 4. A cooling device 7 consisting of blowers 5 and 6 is mounted on the top.

The storage 1 is connected to a carbon dioxide gas generating device 101 for filling the interior with carbon dioxide gas Co2, and a carbon dioxide adsorption device 102 for adsorbing and removing excess carbon dioxide gas CO2 in the combustion gas. . The carbon dioxide gas generator 101 is
It is arranged between an introduction pipe 103 that introduces air in the storage 1 and a connecting pipe 104 that leads the combustion gas generated here to the carbon dioxide adsorption device 102, and is connected to the combustion furnace 106 and the combustion furnace 10.
5. A preheater 106 which exchanges heat with combustion gas to preheat the air used for combustion, which is provided in contact with the upper part, and a combustion gas cooler 107.
It consists of 108 is a blower and a cooler 107
and the carbon dioxide adsorption device 102, the air in the storage 1 is guided from the introduction pipe 103 to the combustion furnace 105, and the combustion gas generated in the combustion furnace 105 is transferred to the cooler 1.
After being cooled in step 07, it is led to a carbon dioxide adsorption device 102 through a connecting pipe 104. The combustion furnace 105 has a heat insulating pipe 109 on the inner surface.
and an outer casing 113, which has a heat insulating plate 112 on its inner surface and has an air passage 111 between the inner casing 110 and the inner casing 110 for supplying combustion air. 114 is solid fuel, inner casing 1
It is filled in the heat insulating pipe 109 of 1o. 115 is a grate on which solid fuel 114 is placed.

Reference numeral 116 denotes an ignition heater, which is provided at the lower part of the heat insulating pipe 109 and heats the combustion air to combust the solid fuel 114. The solid fuel 114 is made of highly pure carbon, and the combustion gas becomes carbon dioxide gas Co2 and nitrogen N2 through a reaction of C+02+N2→Co2+N2.

117 is a partition plate that directs combustion air to the inner casing 10.
A heat insulating plate 112 provided on the inner surface of the outer casing 113 and the inner casing 110 is provided to form the air passage 111 for guiding the air into the inner casing 9 . The air passage 111 has an upper end open to a combustion air tube outer outlet 119 provided at a contact surface 118 between the combustion furnace 105 and the preheater 106, and a lower end opened into the combustion furnace 105 communicating with the inner casing 11o. are doing. Reference numeral 120 denotes a secondary combustion air hole, which opens in the upper part of the partition plate 117 through which the combustion gas after reacting with the solid fuel 114 passes. The pre-purifier 106 is composed of a pipe 122 through which combustion gas having a high temperature from an inlet 121 flows inside the pipe, and a fin 123 configured to meander around the outside of the pipe 122 so that combustion air flows. 105 at the contact surface 118. 124 and 125 are covers that cover the preheater 106. Further, a heat insulating plate 126 is provided on the inner surface of the cover 124. The cooler 107 is connected to the pipe 1 of the preheater 106.
22 and is provided with a cooling fan 127 for cooling the pipe 122.

128 is a catalyst, which functions to oxidize carbon monoxide generated by incomplete combustion in the combustion gas and replace it with carbon dioxide. The catalyst 123 has a through-cylindrical portion 130 provided in a part of a case 129 that partitions a combustion gas flow path.
and is provided above the inner casing 110. 131 is a diaphragm plate, which is connected to the inner casing 110.
The combustion gas is passed through a throttle hole 132 provided at the center of the throttle plate 131 and provided with a flange at the periphery on the inner casing 110 side. 133 is solid fuel 11
It is a filter for removing ash contained in 4.
It is provided between the catalyst 128 and the throttle plate 131. 1
34 is a heater for heating the catalyst, and is provided on the upstream side of the catalyst 128.

On the other hand, the carbon dioxide adsorption device 102 is for adsorbing excess carbon dioxide CQ2 in the combustion gas and discharging it outside the storage 1. The carbon dioxide adsorption device 1o2 includes an adsorbent 13
5 and the flow path switching section 1 provided upstream and downstream of this adsorbent 135
It is composed of 36,137 υ, and the whole is covered with a 138 outer box.

Reference numerals 139 to 151 are internal partition plates, which partition each part to prevent leakage inside. Dampers 152 to 159 are for switching flow paths, and are provided to open and close ventilation holes 160 to 167 provided in internal partition plates facing the dampers 152 to 159, respectively. 168 to 171, flow path switching section 136,
137 and the filter part 172 are communicating holes. 173 to 176 are internal partition plates 142, 143, 147,
This is a ventilation hole provided at 148. 176', 176'
is a side plate that covers the flow path switching parts 136 and 137 and closes the outer box 138. A discharge pipe 177 connects the flow path switching section 137 on the downstream side of the carbon dioxide adsorption device 102 and the storage 1. Reference numeral 178 denotes a blower for removal and removal, and is provided to discharge air to the flow path switching section 137.

Reference numeral 179 is an exhaust pipe, which is provided in the flow path switching section 136 and performs exhaust during regeneration.

Reference numeral 180 denotes a flow path switching section, which is provided between the carbon dioxide gas generator 101 and the carbon dioxide adsorption device 102. Outer box 18
1 is divided by internal partition plates 182 to 184 so that each part is not omitted. Dampers 186 to 188 are for switching flow paths, and are provided to open and close ventilation holes 189 to 192 provided in the outer box 181 and inner partition plates 182, 183, and 184 facing each damper 185 to 188. 193
is a gas monitor, which is connected with a sampling tube 194 so as to sample the gas inside the introduction pipe 103. A controller 196 controls the air volume of the blower 108, and the air volume is determined by a signal from the gas monitor 193.

Reference numeral 196 is an ethylene adsorption device, and the inside thereof is filled with ethylene adsorption material 197. 198 is a flow path switching valve that switches the flow path to the carbon dioxide adsorption device 102 and the ethylene adsorption device 196.

A connecting pipe 199 connects the flow path switching pulp 198 and the discharge pipe 177, and the ethylene adsorber 196 is provided between them. 20o is a water seal trap and is provided in the discharge pipe 177.

Regarding the fresh food storage device configured as described above, the first
The operation will be explained using FIG.

The atmosphere inside storage 1 was initially N2=79%, 02=21
When the carbon dioxide generator 101 is operated, the air inside the refrigerator is passed through the inlet pipe 103 by the blower 1o8 to the ventilation hole 190. It is introduced to the outside of the preheater 106 through the introduction pipe 103 and is heated to a high temperature by exchanging heat, and the outside exit of the tube is
The solid fuel 114 is introduced into the combustion furnace 105 through the air passage 111, heated by the ignition heater 116, and used for combustion of the solid fuel 114.

Through the reaction of C+020N2→CQ2+N2, the combustion gas becomes carbon dioxide CO2 and nitrogen N2, which pass through the throttle hole 132 and filter 133, where the catalyst 128 completely oxidizes and purifies the carbon monoxide generated by incomplete combustion, and sends it to the preheater. After passing through the inside of the tube 106 and being cooled by the cooler 107, the connecting tube 104
Ventilation hole 192 of flow path switching section 180, blower 108. It passes through the flow path switching valve 198, and further passes through the connecting pipe 1042 ventilation hole 173, 161° communication hole 168, and enters the adsorbent 136 on the left side. Here, carbon dioxide gas CO2 is absorbed by the adsorbent 135
Only the nitrogen N2 adsorbed by the nitrogen gas passes through the communication hole 17o2 and the ventilation holes 165, 175, passes through the water seal trap 200 via the discharge pipe 177, and then circulates to the storage 1. After a certain period of time has elapsed, the adsorbent 135 circulates the combustion gas.
dampers 162 to 15 in order to switch from the left side to the right side.
9 is switched, passes through the ventilation holes 173, 160, and the communication holes 169, and enters the adsorbent 135 on the right side. Here again, the carbon dioxide gas Co2 is adsorbed by the adsorbent 135 on the right side, and only the nitrogen N2 passes through the communication hole 1717 and the ventilation holes 164, 175, and after passing through the water seal trap 200 via the discharge pipe 177, it is circulated to the refrigerator 1. After a certain period of time has elapsed again, the adsorbent 135 switches from the right side to the left side, and the combustion gas alternately circulates. During this time, the adsorbent 135 on the left side reaches the limit of its adsorption capacity for carbon dioxide CQ2, and the carbon dioxide CO2 in the combustion gas cannot be adsorbed completely9, and is exhausted into the storage 1 through the discharge pipe 17. , carbon dioxide gas C○2 in storage 1
The concentration begins to gradually increase. 76rr? This is the state about 2 hours after the start of operation in a storage warehouse 1 with a size of . During this time, the oxygen 02 concentration in the storage 1 continues to decrease from the initial 21°. Assuming that the gas concentration in storage 1 is oxygen 02 = 5%, carbon dioxide CQ2 = 6%, and nitrogen N2 = 90%, we can see that the carbon dioxide in storage 1 has increased to 5%. When the gas monitor 193 detects this by sampling the gas in the introduction pipe 103, the blower 178 for desorption of the carbon dioxide adsorption device 102 is operated, and regeneration of the adsorbent 135 is started. For example, the adsorbent 13 on the right
6, when the combustion gas circulates and adsorbs carbon dioxide gas CO2, the air blower 178 causes the outside air to pass through the ventilation holes 176, 167 and the communication hole 170, and the adsorbent 135 on the left side Carbon dioxide gas C by being blown
○2 is detached and regenerated.

Since this is performed alternately at regular intervals, the concentration of carbon dioxide CO2 in the storage 1 is maintained at a predetermined value of 6. On the other hand, the oxygen O2 concentration continues to decrease because it is being used for combustion during that time, and reaches the predetermined 6% after 10 hours, which is detected by the gas monitor 193, and the carbon dioxide gas generator 101 and carbon dioxide adsorption device 102 is stopped. Now storage 1
The inside is the specified gas concentration oxygen 0 = ts%, carbon dioxide C○
2=5%.

When nitrogen N2 becomes 90%, storage begins. At the same time as detecting that the oxygen 02 concentration has reached a predetermined value of 5%, the damper 186 of the flow path switching section 180. 187°188 is the introduction pipe 1o39 ventilation hole 191. Blower 1o8. Communication pipe 104
It switches so that it communicates.

After that, the blower 108 is operated at regular intervals, and the inlet pipe 1o is
By detecting the gas in the storage compartment 1 with the gas monitor 193, when the carbon dioxide gas CO2 generated by the respiration of the fresh food stored in the storage compartment 1 exceeds a predetermined 5%, the carbon dioxide adsorption device operates and Carbon dioxide C until concentration
Adsorb Q2.

To explain this operation, when the gas monitor 193 detects that a predetermined concentration has been exceeded, the blower 108 is operated and the gas in the storage 1 is transferred to the inlet pipe 1Q3° ventilation hole 191. Blower 108. It passes through the flow path switching valve 198, the connecting pipe 1o42, the ventilation holes 173, 161° communication hole 168, and is introduced into the adsorbent 135 on the left side. Ventilation hole 16
6゜1 6. It passes through the discharge pipe 177 and the water seal trap 200 and circulates to the storage 1. On the other hand, the adsorbent 135 on the right side is
A blower 178 blows outside air into the ventilation holes 176, 166,
The carbon dioxide gas C◯2 is desorbed and regenerated by passing through the communication hole 171 and being blown to the adsorbent 136 on the right side. Since this is applied alternately at regular intervals, the concentration of carbon dioxide Co2 in the storage returns to the predetermined concentration.

In addition, oxygen O2 becomes insufficient due to the respiration of fresh food.
When the amount falls below a predetermined value of 5%, outside air is introduced into the storage 1 by the blower 178 and replenished.

The introduction route is the blower 1782 ventilation hole 176.166°1
64.175. It passes through the discharge pipe 177 and is introduced into the storage 1. At the same time, the gas in the storage 1 is discharged from the exhaust pipe 179. The exhaust route is through the ventilation hole 191° and the blower 108. Communication pipe 1o42 ventilation hole 173, 161° 163.174.
It is exhausted through an exhaust pipe 179.

Ethylene, which is emitted by the respiration of fresh food, is
During the above operation, the adsorbent 136 adsorbs carbon dioxide at the same time, but since the amount of removal is small, the ethylene adsorber 196 adsorbs it. This operation will be explained. The blower 108 is turned on at regular intervals after storage starts.
The flow path switching pulp 198 is transferred to the ethylene adsorber 19.
After passing through an ethylene adsorbent 197 to adsorb and remove ethylene, the water passes through a connecting pipe 199, a discharge pipe 17, a water seal trap 200, and then circulates to the storage 1. By performing this operation at regular intervals for a certain period of time, ethylene is suppressed to a certain amount or less. The water seal trap 200 uses the adsorbent 135 of the carbon dioxide adsorption device 102.
Since water is adsorbed and removed by the ethylene adsorbent 197 of the ethylene adsorber 196, bubbling is performed to replenish humidification.

Next, the operation of ventilating the gas in the storage 1 in order to finish storage and take out the perishables in the storage 1 will be explained.

Ventilation switch (not shown) on control panel (not shown)
The blower 108 is operated by turning on the gas in the storage 1 through the inlet pipe 1o3° ventilation hole 191. Blower 108. Connecting pipe 1o49 ventilation hole 173, 161, 163
, 174. It passes through the exhaust pipe 179 and is released into the atmosphere.

At the same time, outside air is introduced into the storage 1 by the blower 178.

Its path is the blower 1782 ventilation hole 176.166°1
64.175. This is a discharge pipe 177. When the gas monitor 193 detects that the gas in the storage 1 has become equal to the outside air, the blowers 108 and 178 are stopped, and the damper 162 is turned off.
~159, 185~188 are ventilation holes 160~167.
189 to 192 are switched to close.

As described above, according to this embodiment, the adsorber 196 containing the ethylene adsorbent 9 for adsorbing ethylene in the storage 1 and the humidifying means 20 provided on the downstream side of the air circulation leading to the storage 1
By periodically circulating the air in the storage 1 to the ethylene adsorber 196 to adsorb and remove it, the excess carbon dioxide in the storage 1 can be suppressed to below a certain amount. The moisture removed at the same time when it is circulated through the carbon dioxide adsorption device 102 and removed by adsorption is humidified by the humidification means 200 provided on the downstream side of the air circulation leading to the storage 1, so that it does not adversely affect the fresh produce.

Effects of the Invention The air in the storage is periodically circulated to the ethylene adsorption device by being equipped with an adsorption device containing an ethylene adsorbent that adsorbs ethylene in the storage and a humidifying means provided on the downstream side of the air circulation leading to the storage. By adsorbing and removing the excess carbon dioxide in the storage, it can be suppressed to a certain amount or less, and when the excess carbon dioxide in the storage is circulated to the carbon dioxide adsorption device and removed by adsorption, the moisture that is removed at the same time is removed by air circulation leading to the storage. Since humidification is performed by a humidifying means provided downstream of the humidifier, there is no negative effect on perishables.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a fresh produce storage device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the same carbon dioxide adsorption device.
FIG. 3 is a cross-sectional view of the carbon dioxide adsorption device, FIG. 4 is a graph showing changes in gas components in the refrigerator due to the fresh food storage device, and FIG. 5 is a schematic cross-sectional view of the conventional fresh food storage device. 1...Storage, 102...Carbon dioxide adsorption device, 106°°...Combustion furnace, 108...
・Blower, 114... Solid fuel, 135...
...Adsorbent, 196...Ethylene adsorber, 1
97...Ethylene adsorbent, 200...
Humidification means. Name of agent Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] A storage for storing perishables, a solid fuel containing carbon, a combustion furnace for burning the solid fuel to introduce carbon dioxide into the storage, and a combustion furnace for supplying air for combustion of the solid fuel to the combustion furnace. A blower that circulates from the storage,
an adsorption device containing an adsorbent to adsorb excess carbon dioxide gas generated from the combustion furnace, an adsorption device containing an ethylene adsorbent to adsorb ethylene in the storage, and an air circulation system leading to the storage. A fresh produce storage device characterized by comprising a humidifying means provided on the downstream side.