JPH0974893A - Preserving system by maintaining coolness with utilizing snow and its facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a preserving system by maintaining coolness capable of effectively utilizing a cool air having a low temperature and a high humidity of a fallen snow. SOLUTION: This preserving system by maintaining coolness with utilizing snow, is constituted by communicating a snow storing room 2 consisting of, at least, a heat insulating side wall 5 and a heat insulating floor 7, with a heat insulated and coolness maintained room 10 through a communicating passage 3, and installing a heat insulating mobile partition 4 capable of opening and closing in the horizontal direction. By this, a preserved material 11 stored in the heat insulated and coolness maintained room 10 is cooled and preserved by naturally or forcefully convecting the cool air of the snow accommodated in the snow storing room 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold heat storage system for snow heat and its equipment, and more particularly to snow crops to utilize, for example, crops such as vegetables and fruits, fresh flowers or marine products at a predetermined temperature. The present invention relates to a snow heat storage cold storage system and its equipment for cooling and cooling.

[0002]

2. Description of the Related Art As a conventional cold storage system of this type, for example, a system in which the entire cold insulating house is heat-transfer-cooled by snow on the upper part to indirectly generate cold air in the cold insulating house (Japanese Patent Laid-Open No. 61-268127). (Refer to the official gazette), heat transfer cooling by snow accumulation on the upper part of a semi-underground storage (Japanese Patent Publication No. 5-536).
No. 81), or an ice block is deposited and housed in an ice chamber that communicates with a storage room for storing agricultural products, and a roll-type shutter that can be opened and closed in the vertical direction is provided at the communication part between the storage room and the ice chamber. For example, there is known one that naturally convects the cold air in the ice room (see Japanese Patent Publication No. 3-61110).

[0003]

However, in the technique described in JP-A-61-268127,
Since the whole cold storage house is covered with snow, it is necessary to have a ceiling structure that can withstand the weight of snow.Because the circulating cold air of the snow is not used directly, air is added to avoid overcooling the storage. There was a problem such as the need for a heating device. Further, in the technique described in Japanese Patent Publication No. 5-53681 also, since the upper part of the storage is covered with snow, it is necessary to make the ceiling structure strong enough to withstand the weight of snow, and the cover covering the upper surface of the snow is damaged. In that case, there was a possibility that snow melted by rainwater. Further, since the circulating cold air is not used, there is a problem that the cooling efficiency is reduced.

On the other hand, the technique disclosed in Japanese Examined Patent Publication No. 3-61110 is to naturally convect the cold air in the ice compartment by opening and closing a roll type shutter that can be opened and closed in the vertical direction. There is a problem that it takes time to process the block, and because the cool air is adjusted by opening and closing the roll type shutter that opens and closes in the vertical direction, the circulation efficiency of the cool air is poor and the effective use of the cool air cannot be achieved. was there.

The present invention has been made in view of the above circumstances, and provides a cold storage system using snow heat and equipment for cold storage of stored goods by effectively utilizing cold air of low temperature and high humidity of snowfall. That is the purpose.

[0006]

In order to achieve the above object, the snow heat use cold storage system according to claim 1 controls the use of cold air from snow contained in a snow storage chamber formed by a heat insulating wall. The storage in the adiabatic cool room is cooled to a predetermined temperature by natural convection or forced convection.

According to another aspect of the present invention, there is provided a cold storage system utilizing snow heat, wherein the cold air produced by snow contained in a snow storage chamber formed of a heat insulating wall is controlled to be primarily cooled to cool the stored material in the heat insulating cold chamber. After shutting off, the secondary cooling is carried out by the cool air by the freezing means to cool the stored material in the adiabatic cold insulation chamber to a predetermined temperature.

In the cold heat storage system using snow heat according to the third aspect of the present invention, when the cold air due to the snow contained in the snow storage chamber formed by the heat insulation wall is used and controlled, only the cold air is used in the heat insulation cold storage chamber. Primary cooling that cools stored materials to a specified temperature by natural convection or forced convection, and secondary cooling that cools to a specified temperature lower than the primary cooling by the cooling air by the refrigerating means following the above primary cooling in other adiabatic cold insulation chambers. And are performed simultaneously or selectively in parallel.

The cold heat storage facility utilizing snow heat according to claim 4 is:
A snow storage room consisting of at least a heat insulation wall and a heat insulation floor, a heat insulation cold storage room for storing stored items, and a heat insulation movable partition which can be opened and closed in a horizontal direction at a communication port communicating the snow storage room and the heat insulation cold insulation room. , Are provided.

The cold heat storage facility utilizing snow heat according to claim 5 is
A snow storage room including at least a heat insulation wall and a heat insulation floor; a heat insulation cold storage room for storing a storage; and a ventilation duct communicating between the snow storage room and an upper part and a lower part of the heat insulation cold insulation room. To do.

The cold heat storage facility utilizing snow heat according to claim 6 is
It is characterized by comprising a snow storage room including at least a heat insulation wall and a heat insulation floor, a heat insulation cold storage room for accommodating stored items, and a freezing means arranged in the heat insulation cold insulation room.

The cold heat storage facility for snow heat use according to claim 7
A snow storage room consisting of at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage rooms for accommodating stored items, and a communication port communicating with the snow storage room and one of the heat insulation cold storage rooms can be opened and closed horizontally. A heat insulating movable partition, and a blower duct that connects the snow storage chamber and another one or more upper and lower portions of the heat insulating and cold insulating chamber.

The cold heat storage facility utilizing snow heat according to claim 8 is:
A snow storage room consisting of at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage rooms for accommodating stored items, and a communication port communicating with the snow storage room and one of the heat insulation cold storage rooms can be opened and closed horizontally. A heat insulating movable partition and a refrigerating means arranged in another one or a plurality of the above heat insulating and cold insulating chambers.

The cold heat storage facility utilizing snow heat according to claim 9 is
A snow storage room consisting of at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage rooms for accommodating stored items, and a communication port communicating with the snow storage room and one of the heat insulation cold storage rooms can be opened and closed horizontally. A heat insulating movable partition, a blower duct that communicates the snow storage chamber and another one or more upper and lower portions of the heat insulation cold storage chamber, and a heat insulation cold storage chamber that communicates with the snow storage chamber via the blower duct. And a freezing means provided.

According to a tenth aspect of the present invention, there is provided a snow heat storage cold storage facility, which comprises a snow storage room having at least a heat insulating wall and a heat insulating floor.
A plurality of adiabatic cold storage chambers for storing stored items, a communication opening that connects the snow storage chamber and one of the adiabatic cold storage chambers with each other, the heat insulating movable partition that can be opened and closed horizontally, the snow storage chamber and the adiabatic cold insulation Another one or a plurality of upper and lower parts of the chamber, a blowing duct communicating with the upper part and the lower part, a refrigerating means arranged in an adiabatic cold storage chamber communicating with the snow storage chamber via the blowing duct, and the adiabatic movable partition And a running-in chamber selectively provided with a movable heat insulating partition wall in the heat insulation cold storage chamber communicating with the snow storage chamber.

In the present invention, the refrigerating means means a mechanical or electronic cooling means having a cooling capacity capable of cooling the stored material to a temperature for freezing, if desired.

According to the present invention, the cold air due to snow is controlled to be utilized, that is, the cold air of the snow stored in the snow storage chamber is supplied to the bottom of the heat insulation cold storage chamber, and the warm air at the upper portion of the heat insulation cold storage chamber is supplied to the snow storage chamber. The stored material in the adiabatic cold insulation chamber can be lowered to a predetermined temperature of low temperature and high humidity by natural convection or forced convection that is exhausted to the upper part of the above, and then the cold air can be shut off to keep it at a predetermined temperature. After that, the constant temperature can be easily maintained by supplying the cold air of snow at regular intervals.

In addition to the natural convection or forced convection of the cold air of the snow, a cooling means by a refrigerating means is added, so that the stored contents in the heat insulation cooler room can be lower or lower than that which cannot be reached or reached only by the cold air of the snow. The temperature can be kept cool and the power load on the refrigeration means can be reduced.

In addition, when these are coexisted, it is possible to simultaneously or in parallel store many kinds of stored materials having different temperatures suitable for keeping cold depending on the season. Further, by providing a break-in room, it is possible to better cope with more diverse cold storage conditions and changes in the storage amount.

[0020]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. First Embodiment FIG. 1 is a perspective view showing a part of a snow heat utilization cold storage facility of the present invention in a cross section, and FIG. 2 is a cross sectional view of a main part thereof.

The cold heat storage facility utilizing snow heat according to the present invention is used for snow 1
The snow storage room 2 for housing the snow storage room 2 and the heat insulation cold storage room 10 for storing the stored goods 11 such as agricultural crops such as vegetables and fruits, fresh flowers or marine products are the main parts, and the snow storage room 2 and the heat insulation cold storage room. A heat insulating movable partition 4 is attached to a communication port 3 communicating with 10 so as to be horizontally openable and closable.

The snow storage chamber 2 has a heat insulating structure including a heat insulating side wall 5, a heat insulating ceiling 6 and a heat insulating floor 7.
In this case, the heat insulating side wall 5 and the heat insulating ceiling 6 have a heat insulating core material 8b such as foamed polyurethane, foamed polyethylene or foamed polystyrene between a pair of surface plates 8a such as colored steel plates, colored aluminum plates or synthetic resin plates.
It is formed by the heat insulation panel 8c filled with (Fig. 2
(B)). In addition, the concave strips 8 are provided on the sides of the heat insulating panel 8c.
d or a frame member 8f having a ridge 8e is attached,
A plurality of heat insulating panels 8c are stacked in series by engaging the concave lines 8d and the convex lines 8e. On the other hand, the heat insulation floor 7 is shown in FIG.
As shown in (c), there is a heat insulating structure in which a heat insulating material 7e such as a styrofoam molded plate is interposed between a soil concrete floor 7a and a holding concrete floor 7b via a moisture proof layer 7c and a waterproof layer 7d, A drainage groove 2b for snow melting water is formed on the floor surface near the side wall of the snow storage chamber 2. In this case, at least the side wall portion and the floor portion of the snow storage chamber 2 may have a heat insulating structure. Further, the roof portion of the snow storage room 2 may be an open / close dome type roof.

An entrance / exit 9 having a heat insulating door 9a is provided on a part of the side wall of the snow storage compartment 2 constructed as described above, and for snow scraping which moves into the snow storage compartment 2 via this entrance / exit 9. Snow plows and bulldozers with a rotary or plow of the snow cover the snow storage room 2 with snow 1 of the total capacity of the snow storage room 2 of 9
It is designed to be stacked and housed so as to occupy a space of 0 to 95%. This ensures the initial requirement for circulating cold air. When the roof part of the snow storage room 2 has an open / close dome type roof, the snow 1 can be carried into the snow storage room 2 from the roof part by a device such as a belt conveyor. In addition,
On the side of the communication port 3 of the snow storage chamber 2, it is preferable to install a snowfall prevention fence 2a formed of, for example, a grid-shaped metal fence and wooden cross rails.

As in the case of the snow storage room 2, the heat insulation cool room 10 has a heat insulation side wall 5 and a heat insulation ceiling 6 which are composed of heat insulation panels 8c, and a moisture barrier layer between the soil concrete floor 7a and the holding concrete floor 7b. It is composed of a heat insulating floor 7 having a heat insulating structure in which a heat insulating material 7e such as a styrofoam molded plate is interposed via a 7c and a waterproof layer 7d.

The movable partition 4 is, for example, a core material made of a foamed polyethylene sheet laminated with aluminum foil or an aluminum vapor-deposited film {AI cover (trade name: manufactured by Nippon Light Metal Co., Ltd.)} or a soft foamed urethane sheet. It is formed by hanging a heat insulating sheet material, such as a laminate of coated vinylon campus, on the curtain rail 4a in a curtain shape (see FIG. 3).
In this case, the adiabatic movable partition 4 is manually opened or closed, or a rope is horizontally provided on a wire pulley and is connected to a drive motor to be automatically opened or closed. Further, the heat insulating movable partition 4 may be one in which a vertically long heat insulating panel is hingedly connected and is similarly hung on the curtain rail body.

In the snow heat storage heat retention equipment of the present invention constructed as described above, the snow 1 is carried into (accommodating) the snow storage chamber 2 and the stored material 11 is accommodated in the heat insulation cold storage chamber 10. When the folding door 4b of the heat insulating movable partition 4 is opened horizontally (left and right), the snow 1 stored in the snow storage chamber 2
The cold air flows into the heat insulation cold storage chamber 10 from below, and the storage 11 in the heat insulation cold storage chamber 10 is cooled to a predetermined temperature. Also,
The warm air used for cooling flows to the upper part of the heat insulation cold storage chamber 10 and then to the upper part of the snow storage chamber 2. Therefore, by opening and closing the adiabatic movable partition 4, the cold air of the snow 1 is supplied / interrupted in the adiabatic cold insulation chamber 10 by natural convection, so that the stored material 11 can be efficiently cooled / cooled and maintained at +5 to + 15 ° C., for example. In this case, the adiabatic cold insulation room 10 can also be used as a low temperature working room for cold storage. Further, since the cold air of low temperature and high humidity due to the snow 1 is used, snow burn due to contact of the thaw water does not occur, and the stored material does not dry during the cooling process.

Second Embodiment FIG. 4 is a perspective view showing a part of a second embodiment of the snow heat utilization cold storage equipment of the present invention in section, and FIG. 5 is a schematic transverse sectional view thereof.

The second embodiment is a case in which a refrigerator is added to the cold storage facility of the first embodiment as a forced cooling function so that the stored material can be cooled / cooled to a lower temperature. That is, as in the first embodiment, the snow storage room 2
This is a case where the heat insulating cold room 10 and the heat insulating cold room 10 are communicated with each other through the heat insulating movable partition 4, and another heat insulating cold room 20 (hereinafter, referred to as a cooling room) is provided which is communicated with the snow storage room 2 through the blower duct 21. .

In this case, the cooling chamber 20 is the adiabatic cold insulation chamber 10.
In the same manner as the heat insulating structure, the first cooling chamber 20a adjacent to the snow storage chamber 2 and the second cooling chamber 20b adjacent to the first cooling chamber 20a are formed.
Refrigerators 22 (specifically, indoor units of the refrigerating unit) as refrigerating means are arranged on the ceiling portions in a and 20b (see FIG. 6). A ventilation fan 23 is attached to the side walls of the cooling chambers 20a and 20b. This ventilation fan 2
3 is used, for example, in the case of storing a store such as fruit, in a case where the ethylene gas or the like released from the fruit is carried out to a low concentration in the room to control the atmosphere. In this case, the ventilation fan 23 can be controlled by a timer or the like.

As shown in FIG. 6, the blower duct 21 has a suction port 21a on the lower side of the snow storage chamber 2,
An air supply duct 21A having an outlet 21b on the ceiling side or upper side of the side walls of the cooling chambers 20a and 20b, and the cooling chamber 20.
The snow storage chamber 2 has an exhaust port 21c at the ceiling of a and 20b.
And an exhaust duct 21B having a discharge port 21d on the upper side thereof. The blower duct 21 has a structure in which a heat insulating panel filled with a heat insulating core material such as foamed polyurethane is combined in a rectangular tube shape. In addition, the air supply duct 2
A blower 24 with an inverter control is arranged in 1A so that the cool air of the snow 1 stored in the snow storage chamber 2 is forcibly supplied into the cooling chambers 20a and 20b by the blower 24. It is configured. The air supply duct 21A
Exhaust port 21b and exhaust port 21c of exhaust duct 21B
A heat insulating door 25 is attached to each of them so as to be openable and closable (see FIG. 8). With this heat insulating door 25, the cooling chambers 20a and 20b can be sealed by blocking the space between the snow storage chamber 2 and the temperature control of the cooling chambers 20a and 20b can be facilitated and dew condensation can be prevented. .

As described above, the snow storage chamber 2 and the cooling chamber 20
a and 20b are the ventilation duct 21, that is, the air supply duct 21.
A and the exhaust duct 21B communicate with each other, and the blower 24 is arranged in the air supply duct 21A to forcibly cool the cold air of the snow in the snow storage chamber 2 and the cooling chambers 20a and 20b.
It can be supplied to the inside of the snow storage chamber 2 and can be circulated in the snow storage chamber 2 by forced convection, so that the storage can be cooled more efficiently and uniformly. Furthermore, by providing a freezing means, it is possible to keep the snow 1 cold at a low temperature, which is difficult to achieve with only cold air, for example, about -3 to + 10 ° C.

On the other hand, the first cooling chamber 2 of the adiabatic cold insulation chamber 10
A break-in chamber 30 defined by a folding movable heat-insulating wall 31 is provided at a portion adjacent to 0a as required (see FIG. 5, night and FIG. 8). In this break-in chamber 30, for example, stored items such as bulbs cooled in the first cooling chamber 20a are taken out from the first cooling chamber 20a, transferred into the break-in chamber 30 to remove heat, and germination adjustment and cold preservation for suppression cultivation are performed. It is used, for example, when thawing a stored product that has been cooled (frozen) in the cooling chamber 20a and / or 20b.

In this case, as shown in FIG. 8, the running-in chamber 30 is divided into a plurality of heat insulating panels 31a so as to be partitioned and formed between the snow storage chamber 2 and the first cooling chamber 20a.
It is constituted by a foldable movable heat insulating wall 31 which is formed by connecting with a hinge or the like. In this case, the movable heat insulating wall 31
As shown in FIG. 9, the heat-insulating panel 31a constituting the above is attached to a fixed wall 32 vertically extending from the heat-insulating ceiling 6 and moved to a hanger rail 34 having a channel-shaped cross section whose plane cross section is suspended by a hanging bolt 33. A free-standing slider 35 is provided. By moving the slider 35 along the hanger rail 34, the running-in chamber 3
0 can be partitioned. The movable heat insulating wall 31
An entrance / exit door is disposed in the door, and a drop lock 36 that engages with a hole provided in the floor is attached to the lower side of the movable heat insulating wall 31.

The adiabatic cold insulation room 10 and the cooling room 2 are also provided.
A ceiling fan 12 is provided at an appropriate portion of the 0 ceiling portion. The ceiling fan 12 can prevent dew condensation from occurring on the heat insulation panel 10 of the heat insulation cold room 10 and the heat insulation ceiling 6 of the cooling room 20, and at the same time, the heat insulation cold room 10
In addition, the temperature distribution in the cooling chamber 20 can be made uniform. A machine room 40 and an office room 41 are provided adjacent to the heat insulation cold storage room 10. The machine room 40 is provided with a measuring device as a cold storage system using snow heat, an outdoor unit of a freezing means, and the like.

On the other hand, in the second embodiment, the cooling chamber 20
Although the case where two chambers a and 20b are provided has been described, one cooling chamber may be provided, or three or more cooling chambers may be provided, depending on the cooling capacity of the snow storage chamber. In addition, conventional heat insulating doors are provided at the entrances and exits of the cooling chambers 20a and 20b so that they can be opened and closed from inside and outside the room.

Next, in the cold storage facility of the second embodiment configured as described above, the adiabatic cold storage chamber 10 operates in the same manner as in the first embodiment, so the description thereof will be omitted and the first and second embodiments will be omitted. The operation of cooling and keeping a stored item (not shown) housed in the second cooling chambers 20a and 20b will be described. First, the blower 24 in the air supply duct 21A is driven to forcibly supply the cold air of the snow 1 stored in the snow storage chamber 2 into the cooling chambers 20a and 20b to perform primary cooling of the room and stored items (for example, Room temperature to + 3 ° C; humidity 80 to 95%)
I do. Next, the heat insulating door 25 is closed and the cooling chambers 20a and 20b are closed.
In the closed state, the refrigerator 22 is driven to cool (secondary cooling) (for example, +10 to -3 ° C; humidity 80 to 95%).
As a result, it is possible to cool the stored products housed in the cooling chambers 20a and 20b to the target temperature. As described above, after the primary cooling with the cold air of the snow 1 and the secondary cooling by driving the refrigerator 22, it is possible to reduce the power consumption (capacity) of the refrigerator 22 and to cool the stored items. It is possible to prevent careless drying. In this case, it goes without saying that the secondary cooling can be started for a shorter time or immediately when the primary cooled stored items are stored in the heat insulation cool room 10.

In the case where a small amount of or a storage material already present in the heat insulation cold storage compartment 10 is partitioned and temporarily stored before thawing or carrying out the storage material cooled in the cooling chambers 20a and 20b, first, Breaking in the movable heat insulation wall 31 to break in the room 3
After partitioning 0, the stored items 11 housed in the cooling chambers 20a and 20b can be carried into the run-in chamber 30 and thawed or radiated to heat and cool the stored items to a predetermined temperature. In addition, the break-in chamber 30 can be used when it is desired to keep cold as a small amount of new storage for a short period of time.

Incidentally, the first and second cooling chambers 20a, 2
In parallel with the cooling of the storage in 0b, the storage accommodated in the heat insulation cool chamber 10 is kept cool by the cold air of the snow in the snow storage chamber 2 by opening the adiabatic movable partition 4 if necessary. You can

Therefore, the primary cooling for cooling / cooling the stored material in the adiabatic cold insulation chamber 10 to a predetermined temperature by natural convection using only the cold air of the snow 1 in the snow storage room 2 and the cooling chambers 20a, 2a
In 0b, the cold air of the snow 1 in the snow storage room 2 is forcibly supplied to cool the stored material (primary cooling), and then the cold air driven by the refrigerator 22 cools the snow to a predetermined temperature lower than the primary cooling. Secondary cooling for keeping cold can be performed simultaneously or selectively, and it is possible to effectively carry out cooling / cooling under different conditions for different kinds of stored materials.

Other Embodiments 1) In the first embodiment, the case where the snow storage chamber 2 and the heat insulation cold storage chamber 10 are communicated with each other through the heat insulating movable partition 4 and kept cold by natural convection has been described. Instead of the movable partition 4, the snow storage chamber 2 and the adiabatic cold storage chamber 10 may be communicated with each other via a ventilation duct 21 that includes an air supply duct 21A and an exhaust duct 21B and is provided with opening / closing means for the duct (FIG. 1).
0 (a)).

2) A blower 24 is installed in the air supply duct 21A of the above 1) to draw in cool air from the lower part of the snow storage chamber 2 and forcefully exhaust it from the upper part of the adiabatic cold insulation chamber 10. It is also possible (see FIG. 10B).

3) The refrigerator 2 is installed in the heat insulation cool room 10 of 2) above.
It is also possible to arrange 2 to enable forced cooling (see FIG. 10C).

4) In the above second embodiment, the case where the refrigerator 22 is disposed in the cooling chamber (specifically, the first and second cooling chambers 20a and 20b) for forced cooling has been described. It is also possible to cool the insides of the cooling chambers 20a and 20b only by forced convection without disposing the refrigerator 22 so that the cooling chambers 20a and 20b can be used in parallel with the cooling by natural convection in the heat insulation cold storage chamber 10.

In any of these embodiments, the cold air due to snow is controlled by supplying and shutting it off, so that it can be managed at a desired temperature.

[0045]

EXAMPLES Next, examples based on concrete experiments of the cold storage method and equipment of the present invention will be described. Here, in the case of the cold storage method and equipment of the second embodiment, a case where an operation experiment is performed under the following equipment will be described.

★ Outline of equipment ・ Snow storage room: 7,173 m ³ (snow storage capacity: 1,269 tons) ・ Cold storage room: 1,012 m ³・ First cooling room: 247 m ³・ Second cooling room: 495 m ³・Break-in room: 300 m ³・ Building side wall: urethane foam core insulation panel; wall thickness 100 mm ・ Building floor insulation structure: 150 mmt foam polystyrene plate ・ Movable partition: AI cover (product name: Nippon Light Metal Co., Ltd.) wall thickness 15 mm ・ Movable Wall: urethane foam core insulation panel; wall thickness 42 mm ・ Blower duct: urethane foam core insulation panel; wall thickness 42 mm ・ Blower with inverter control: mixed flow duct fan.

★ Specific contents of equipment ・ Cooling room: Ceiling height; 4500 m Ceiling fan: 4 places Temperature sensor installation place: 1 place Ventilation fan: 2 places ・ First cooling room: Ceiling height; 4,500 mm Ceiling freezing Machine: 2 units (Refrigerator capacity: 4,500 Kcal / hour) Temperature sensor installation location: 1 location Ventilation fan: 1 unit ・ Second cooling chamber: Ceiling height: 4,500 mm Ceiling refrigerator: 2 units (Refrigerator capacity Temperature sensor installation locations: 2 locations Ventilation fan: 1 piece • Break-in room: ceiling height; 4,500 mm ceiling fan; none Temperature sensor installation location; none • Snow throwing method: rotary snowplow .

Operation results A) Cooling of the cold storage room ・ Product name of the storage: cut flowers (storage amount: 600 m ³ ) ・ Temperature at the time of carrying in the storage product: +20 to + 25 ° C. ・ Initial temperature of the cold storage room: +10 to + 15 ° C.・ Opening area (movable partition): 13.5m [Cooling result] Stored items in a box before shipping will be +5 after 6 hours.
The temperature reached ℃ and the movable partition was closed.

B) Cooling of the first cooling chamber-Product name of the stored product: bulbs (storage amount: 16,000 Kg) -Temperature when the stored product is charged: +15 to + 20 ° C-Initial temperature of the second cooling chamber: + 5 ° C [Cooling result] The cooling temperature and speed are adjusted by controlling the rotation speed with an inverter that connects one blower to the indoor proportional sensor. Store the stored items in a wooden box for long-term cold storage and install a blower 36
After operating for hours, the room temperature reached + 3 ° C. And the heat insulation door of the ventilation duct was closed. Then, when the refrigerator was operated for 12 hours, the indoor temperature became −1.5 ° C.

C) Cooling of the second cooling chamber-Product name of the stored product: bulb (storage amount: 32,000 Kg) -Temperature at the time of inputting the stored product: 15 to 20 ° C-Initial temperature of the second cooling chamber: + 5 ° C [Cooling result] The cooling temperature and speed are adjusted by controlling the rotation speed with an inverter that connects one blower to the indoor proportional sensor. When the contents were stored in a container basket and the blower was operated for 36 hours, the room temperature reached + 3 ° C. And
The heat insulation door of the ventilation duct was closed. Then, the refrigerator 12
After operating for hours, the room temperature became -2 ° C.

D) Cooling of the break-in room ・ Product name of the stored material: bulbs (storage amount: 2000 Kg) ・ Temperature at the time of charging the stored material: -2 ° C ・ Initial temperature of the running-in room: +15 ° C [Cooling result] Snow storage room Open and close the movable partition between
The temperature was adjusted to + 10 ° C.

As a result of conducting the above-mentioned operation experiment on fruits and vegetables in addition to the above-mentioned cut flowers, bulbs, etc., the kind of the stored goods was set at the cooling / cooling temperature and humidity as shown in Table 1. It was possible to perform the optimum cooling / cooling according to the above.

[0053]

[Table 1]

[0054]

As described above, according to the present invention, the following effects can be obtained.

1) According to the invention described in claims 1, 4 and 5, cold air of the snow stored in the snow storage chamber is supplied to the bottom of the heat insulation cold storage chamber, and warm air of the upper portion of the heat insulation cold storage chamber is stored in the snow storage. The stored material in the adiabatic cold insulation room can be cooled by natural convection or forced convection that is exhausted to the upper part of the room, and can be kept cold by shutting off cool air, so the stored material can be kept at a predetermined temperature of low temperature and high humidity, for example, +5 to + 15 ° C. Can be cooled and kept cool.
Also, because of the use of snowfall, when implementing in a snowfall area,
Initial investment and annual equipment operating costs can be reduced.

2) According to the invention described in claims 2, 6, 8 and 9, the primary cooling by the cold air of the snow and the secondary cooling by the freezing means can be performed. Therefore, in addition to the above 1), The stored material can be cooled / cooled to a lower temperature, for example, -3 to + 10 ° C, and the load on the refrigerating means can be reduced to reduce the power consumption.

3) According to the invention described in claims 3, 7, 8, 9 and 10, since the cold air by the refrigerating means can be added in addition to the natural convection or the forced convection of the cold air of the snow, the above 1). In addition to (2) and (2), it is possible to simultaneously cool and keep a plurality of types of stored items in different cooling states according to the type of stored items. Therefore, the present invention can be applied to stored materials having different cooling temperatures suitable for different seasons, and a high operating rate throughout the year can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of a first embodiment of a cold storage facility of the present invention in cross section.

2A and 2B are schematic cross-sectional views of a main part of the first embodiment.
3B is an enlarged sectional view (B) of the A portion of FIG.

FIG. 3 is a schematic cross-sectional view showing a main part of an adiabatic movable partition.

FIG. 4 is a perspective view showing a part of a second embodiment of the cold storage facility of the present invention in cross section.

FIG. 5 is a schematic cross-sectional view of the second embodiment.

FIG. 6 is a schematic vertical cross-sectional view showing an arrangement state of a blower duct and a refrigerator in the present invention.

FIG. 7 is a cross-sectional view of a main part of a blower duct.

FIG. 8 is a cross-sectional view showing a break-in chamber in the present invention.

FIG. 9 is a vertical sectional view of a movable heat insulating wall according to the present invention.

FIG. 10 is a schematic cross-sectional view showing a modified example of another embodiment of the present invention.

[Explanation of symbols]

 1 Snow 2 Snow Storage Room 3 Communication Port 4 Adiabatic Movable Partition 5 Insulation Side Wall 7 Insulation Floor 10 Insulation Cooling Room 11 Storage 20 Cooling Room (Adiabatic Cooling Room) 20a First Cooling Room 20b Second Cooling Room 21 Air Duct 21A Air Supply Duct 21B Exhaust duct 22 Refrigerator (freezing means) 24 Blower 25 Insulation door 30 Break-in chamber 31 Movable insulation wall

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location F25D 17/08 301 F25D 17/08 301

Claims (10)

[Claims] 1. The storage in the heat insulation cool room is cooled to a predetermined temperature by natural convection or forced convection by utilizing and controlling the cold air from the snow contained in the snow storage room formed by the heat insulation wall. Cold storage system using snow heat. 2. A cold storage due to snow contained in a snow storage chamber formed by a heat insulating wall is controlled to be used to primarily cool the stored material in the heat insulation cold storage chamber, and the cold air is shut off, and then cooled by the refrigerating means. A cold heat storage system using snow heat, characterized in that the storage in the adiabatic cold insulation chamber is cooled to a predetermined temperature by subsequent cooling. 3. When the cold air due to snow contained in the snow storage chamber formed by the heat insulating wall is used and controlled, the stored product in the heat insulation cold storage chamber is cooled to a predetermined temperature by natural convection or forced convection. In the other adiabatic cool room, following the primary cooling, the secondary cooling for cooling to a predetermined temperature lower than the primary cooling by the cooling air by the freezing means is performed simultaneously or selectively in parallel. A cold storage system that utilizes snow heat. 4. A snow storage room comprising at least a heat insulation wall and a heat insulation floor, a heat insulation cold storage room for storing stored items, and a communication port communicating the snow storage room and the heat insulation cold storage room, which can be opened and closed horizontally. Cold storage equipment utilizing snow heat. 5. A snow storage room comprising at least a heat insulation wall and a heat insulation floor, a heat insulation cold storage room for storing stored items, and a ventilation duct communicating between the snow storage room and an upper part and a lower part of the heat insulation cold insulation room. Cold storage equipment that uses snow heat. 6. A snow storage room comprising at least a heat insulation wall and a heat insulation floor, a heat insulation cold storage room for storing stored items, and a freezing means arranged in the heat insulation cold insulation room. Cold storage equipment using snow heat. 7. A snow storage chamber comprising at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage chambers for storing stored items, and a communication port communicating between the snow storage chamber and one of the heat insulation cold storage chambers. Insulation movable partition that can be opened and closed in a horizontal direction, and a snow duct that connects the snow storage chamber and another one or more upper and lower portions of the heat insulation cold storage chamber to each other. Storage equipment. 8. A snow storage chamber comprising at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage chambers for storing stored items, and a communication port communicating between the snow storage chamber and one of the heat insulation cold storage chambers. A snow heat-use cold storage facility comprising: a heat insulating movable partition that can be opened and closed in a horizontal direction; and a refrigerating unit arranged in another one or a plurality of the heat insulating cold storage chambers. 9. A snow storage chamber comprising at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage chambers for storing stored items, and a communication port communicating between the snow storage chamber and one of the heat insulation cold storage chambers. A heat insulating movable partition that can be opened and closed in a horizontal direction, a blower duct that communicates the snow storage chamber and another one or more upper and lower portions of the heat insulation cold storage chamber, and the snow storage chamber that communicates through the blower duct. And a refrigerating means arranged in an adiabatic cold storage chamber. 10. A snow storage room comprising at least a heat insulation wall and a heat insulation floor, a plurality of heat insulation cold storage rooms for storing stored items, and a communication port for communicating the snow storage room with one of the heat insulation cold storage rooms. A heat insulating movable partition that can be opened and closed in a horizontal direction, a blower duct that communicates the snow storage chamber and another one or more upper and lower portions of the heat insulation cold storage chamber, and the snow storage chamber that communicates through the blower duct. And a running-in chamber selectively provided with a movable heat insulation partition wall in the heat insulation cold storage room communicating with the snow storage room through the heat insulation movable partition. Cold storage facility using snow heat.