JP2510677Y2 - Refrigerated aviation container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerated aviation container (hereinafter referred to as "container").

[0002]

2. Description of the Related Art In a conventional refrigerated aviation container, a door 1 is provided on a side wall of a container C as shown in FIG.
Is opened and closed to carry in and out the luggage in the container C. A cooling chamber 2 partitioned by a bottom wall 21 and a side wall 22 is provided in an upper portion near one end wall 3 of the container C, and a sealing lid 4 is provided in an upper portion of the cooling chamber 2. Further, a control box 5 is provided adjacent to the cooling chamber 2, and a lid 6 is provided on the control box 5.

As shown in FIG. 4, the cooling chamber 2 is vertically divided by a partition plate 7 made of a metal having excellent thermal conductivity, and a space above the partition plate 7 is made of a metal having excellent thermal conductivity. It is partitioned by a vertical partition plate 8 which is composed of a storage chamber 12 for storing dry ice 9 and a circulation passage 11. The space below the partition plate 7 forms a cold air generation chamber 10 that exchanges heat with the partition plate 7. A carbon dioxide gas outlet 13 for discharging carbon dioxide gas generated by sublimation from the dry ice 9 is provided above the end wall 3 of the storage chamber 12.

The circulation passage 11 defined by the vertical partition plate 8 and the cooling chamber 2 is formed into three ducts divided into three spaces in the width direction of the container , as shown in FIG. The duct forms a warm air passage 11a serving as a passage for sucking warm air in the container C into the cold air generation chamber 10, and the left and right ducts cool air generated in the cold air generation chamber 10 from cold air discharge ports 16 and 16 described later. The cold air passages 11b and 11b which are passages for discharging into the container C are formed. A warm air suction port 18 is provided above the side wall 22 constituting the warm air passage 11a, and a fan 15 for forcibly sucking the warm air in the container C is provided at the warm air suction port 18.
Further, the warm air suction port 18 communicates with the cool air generation chamber 10 through the warm air passage 11a and the warm air ventilation hole 111 provided in the partition plate 7. Further, the left and right cold air passages 11b, 11
In the lower part of the side wall 22 which constitutes b, the cool air discharge port 1 is provided.
6 and 16 are provided. The cold air generation chamber 10 communicates with the cold air discharge ports 16 and 16 through the cold air vents 112 and 112 and the cold air passages 11b and 11b provided in the partition plate 7 between the left and right cold air passages 11b and 11b, respectively. The cold air that has undergone heat exchange in the cold air generation chamber 10 is cooled by the cold air discharge ports 16, 1.
6 is discharged into the container C.

As shown in FIG. 5, cold air guide plates 14 are arranged in a staggered manner and symmetrically in the width direction of the container in the cold air generating chamber 10, so that they are forcibly sucked by the fan 15. The warm air in the container flows into the cold air generation chamber 10 through the warm air passage 11a and the warm air ventilation hole 111,
While flowing in a zigzag manner in a passage formed by a plurality of cold air guide plates 14 which are divided into left and right from the central cool air guide plate 14, the cool air cooled by the dry ice 9 in the storage chamber 12 and the partition plate 7 are passed. Heat is exchanged and cold air is generated.

The control box 5 accommodates a fan driving power source, a temperature setting dial, a temperature control device, etc., and a temperature sensor 17 as a detecting means for detecting the temperature in the container is provided in the container. cage, the container is rotated stop of the temperature control device operates the fan 15 set drops to temperature by the detection signal of the temperature sensor 17 in the control box 5 of the temperature sensor 17 (see actual fair 2 -5343 JP) .

[0007]

In the conventional cold air container, there is a difference in height between the warm air intake port 18 and the cold air discharge port 16, so that the cold air generation chamber can be operated even when the fan 15 stops rotating. The cool air in 10 flows out from the cool air discharge port 16, and the warm air of the container C enters from the warm air suction port 18 to cause natural convection, so that the container C is kept in a cooled state. More specifically, since there is a temperature difference between the container C and the cooling chamber 2 immediately after the rotation of the fan 15 is stopped, the cold air in the cold air generating chamber 10 has a cold air discharge port located below the cooling chamber 2. The gas flowing out of the container C into the container C and rising from below in the container C is cooled by the cold air generation chamber 1 of the cooling chamber 2 through the warm air intake port 18 located above the cooling chamber 2.
The natural convection that circulates between the container C and the cooling chamber 2 is generated, in which the cold air in the cold air generating chamber 10 flows out into the container C from the cold air discharge port 16 located below the cooling chamber 2. . After that, the temperature inside the container C rises due to the rise of the outside air temperature, and the temperature sensor 17 detects that the temperature exceeds the set temperature, and the fan 15 starts rotating.
Natural convection between the container C and the cooling chamber 2 will continue. Therefore, the inside of the container C is supercooled below the set temperature, so that it is practically impossible to control the temperature inside the container C.

Further, when the temperature inside the container reaches the preset temperature of the temperature sensor 17 which is preset depending on the type of the contents and the like and the rotation of the fan 15 is stopped, the cool air generating chamber 10
In the inside, the warm air that has flowed in from the warm air vent 111 of the warm air passage 11a and the cool air that has been heat-exchanged and cooled through the partition plate 7 mix with each other and exchange heat. 4 and FIG. 5, since there is not enough room in the capacity of the cold air generating chamber 10, an extreme temperature difference occurs between the temperature inside the cold air generating chamber 10 and the temperature inside the container C after the rotation of the fan 15 is stopped. Due to this extreme temperature difference, even if the rotation of the fan 15 is stopped, the cool air in the cool air generation chamber 10 is cooled by the gap between the warm air suction port 18 and the fan 15 and the cool air discharge port 1.
Since it flows out from 6, 16 into the container C, the container C
There is a problem that it is impossible to control the temperature inside the set temperature.

Further, in the conventional cold air container, dew condensation is inevitably generated when the warm air is cooled in the cold air generation chamber 10. That is, water droplets are generated on the lower surface of the partition plate 7, and these water droplets are accumulated in the cold air generation chamber 10 to reduce cooling efficiency, and at the same time, in the case of a known container in which the cool air is guided to the ceiling of the container by the duct, The water droplets that have condensed on the container C drop on the cargo contained in the container C, which wets and damages the cargo in the container, and also causes corrosion due to the drain of the aluminum main body floor plate that constitutes the container. There were problems such as complicated cleaning.

An object of the present invention is to provide a cold aviation container capable of reliably controlling the temperature in the container without the cold air in the cold air generation chamber flowing out into the container when the fan of the warm air intake port is stopped. I am trying.

[0011]

In the refrigerated aviation container of the present invention, the upper portion of the container C near the end wall 3 is located at the bottom wall 21.
The partition in the side wall 22 to form a cooling chamber 2 having a lid 4 for sealing the top. Then, the partition inside the cooling chamber 2 up and down in the diaphragm 7 made of a metal having excellent to the thermal conductivity, the partition plate 7 on
One of the cooling chambers is a solid refrigerant storage chamber 12 for storing the dry ice 9, and the air inside the container C is located below the partition plate 7.
Is introduced to cool the solid refrigerant storage chamber 12 through the partition plate 7.
It forms a cold air generation chamber 10 that exchanges heat with air, and
A warm air suction port 18 having a cool air discharge port 16 and a fan 15;
Is provided, and the warm air intake port 18 is cooled through the warm air passage 11a.
The cold air generation chamber 10 communicates with the cold air generation chamber 10 and the cold air passage 1
It communicates with the cool air discharge port 16 via 1b.

The cold air discharge port 16 and the warm air suction port 18 are arranged so that their lower edges have the same height.

Further, on the bottom wall 21 of the cold air generating chamber 10,
Cold air and cold air generation chamber 10 communicates the cold air generation chamber 10 and the container Ru provided a small diameter drain orifice 19 to the extent that does not affect the temperature in the container.

Furthermore, the hot air inlet 18 and / or in conjunction with the rotation and stop of the operation of the fan in the cold air spout 16 Ru provided an openable louvers board.

Further, the gas obtained by mixing the cool air and the warm air in the cold air generating chamber 10 in the container for 1 to 10 minutes, preferably 3 to 5 minutes after the rotation of the fan 15 is stopped, is cooled in the container. It is formed in a volume that does not leak.

[0016]

Operation: The solid refrigerant 9 is charged into the solid refrigerant storage chamber 12,
Seal with lid 4. When the fan 15 rotates, the container C
The warm air therein is forced to flow from the warm air suction port 18 into the cold air generation chamber 10 through the warm air passage 11a. The warm air flows through the cold air generating chamber 10 and exchanges heat with the partition 7 cooled by the solid refrigerant 9 in the solid refrigerant storage chamber 12 to be cooled to become cool air. This cool air is discharged into the container from the cool air discharge ports 16 and 16 through the cool air passages 11b and 11b. The gas circulates between the inside of the container C and the cooling chamber 2 and is gradually cooled, and when the inside of the container reaches the set temperature, the rotation of the fan 15 is stopped. Then, although the gas in the cold air generation chamber 10, the warm air passage 11a, and the cold air passages 11b and 11b is at a low temperature, since the cold air discharge ports 16 and 16 and the warm air suction port 18 including the fan 15 are provided at the same height, the cold air is generated. Natural convection does not easily occur between the chamber 10 and the inside of the container. Therefore, since the cold air in the cold air generation chamber 10 does not flow out into the container, the temperature in the container can be sufficiently controlled. When the temperature inside the container rises due to the outside air temperature, the fan 15 rotates again, and the inside of the container is cooled again. Further, the drain generated from the cooling chamber is collected in the water receiving container in the container C via the drain orifice. Further, it is effective that the warm air suction port 18 and the cool air discharge ports 16 and 16 are closed by the louver board by the stop signal of the fan 15 while the fan 15 is stopped.

The cold air generating chamber is formed for 1 to 10 minutes, preferably 3 to 5 minutes after the rotation of the fan is stopped, so that the cooling gas in the cold air generating chamber does not leak into the container. There is no sudden extreme temperature difference between the temperature inside the container C and the temperature inside the container C, and the cool air in the cool air generating chamber 10 and the fan 18 are cooled by the cool air in the cool air generating chamber 10 after the rotation of the fan 15 is stopped and before the rotation is restarted. It is prevented from flowing out into the container C from the gap with the cool air outlet 15 and the cool air discharge ports 16 and 16.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the same parts as those of the conventional refrigerated aviation container C described above with reference to the drawings will be omitted for description of the embodiments.

In FIG. 1, the fan 15 for forcibly sucking the warm air in the container C is provided at the warm air suction port 18 provided above the side wall 22 of the warm air passage 11a, and the cool air generating chamber 1 is provided.
The lower edges of the cool air discharge ports 16 and 16 for discharging the cool air that has undergone heat exchange in 0 into the container C are located above the side walls 22 of the left and right cold air passages 11b and are the same as the lower edges of the fan 15 and the warm air suction port 18. It is provided at the height.

When the temperature in the container C reaches the set temperature of the temperature sensor 17, the temperature control circuit in the control box 5 is activated by the set temperature detection signal of the temperature sensor 17 to stop the fan 15. After the rotation of the fan 15 is stopped, in the cooling chamber 2, the gas in the cold air generation chamber 10 and the warm air passage 11a and the cold air passages 11b and 11b becomes even lower in temperature, but strictly speaking, the cold air generation chamber 10 and the warm air passage 1
1a, temperature distribution occurs in the cold air passages 11b, 11b.
In the conventional container C, since the cool air discharge ports 16 and 16 are provided at positions lower than the fan 15 and the warm air suction port 18 as described above, the natural convection of the gas in the container C is used to increase the temperature inside the container C. Gas flows into the cold air generation chamber 10 from between the fan 15 and the warm air suction port 18 through the warm air passage 11a, and the cold air in the cold air generation chamber 10 is cooled by the cold air passage 1a.
It becomes easy to flow out into the container C from the left and right cold air outlets 16 and 16 via the 1b. That is, natural convection occurs between the cooling chamber 2 and the container C. However, in the container C of this embodiment, since the lower edges of the cool air discharge ports 16 and 16 are provided at the same height as the lower edge of the warm air suction port 18 of the fan 15, the temperature between the cooling chamber 2 and the container C is reduced. Due to the difference, natural convection between the cooling chamber 2 and the container C does not occur. Therefore, after the rotation of the fan 15 is stopped by the detection signal of the temperature sensor 17, the cool air in the cooling chamber 2 does not flow out into the container C, so that the temperature in the container C does not drop below the set temperature of the temperature sensor 17.

Even if the left and right cool air discharge ports 16, 16 are provided at a position higher than the fan 15 as opposed to the conventional container C, after the fan 15 stops rotating, the cool air discharge ports 16, 16 and Since the gap between the fan 15 and the warm air suction port 18 serves as a mere communication port between the inside of the cooling chamber 2 and the container C, the cool air discharge ports 16, 16 and the warm air suction port 1 of the fan 15 are connected.
Due to the difference in the position with respect to 8, the cool air in the cooling chamber 2 flows into the container C, and the same problem as in the case of the conventional container C occurs. Therefore, the lower edge of the fan 15 and the lower edges of the cool air discharge ports 16 and 16 are provided at the same position.

Further, in this embodiment, the cold air generating chamber 1
As shown in FIGS. 1 and 2, 0 forms a larger volume than the cold air generation chamber 10 of the conventional cold air container. That is, shortly after the rotation of the fan 15 is stopped, the warm air and the cool air in the cold air generation chamber 10 are mixed with each other to exchange heat and become low temperature. However, the cold air generation chamber 10 of the cold air container of the present embodiment is Cooling chamber 2 after fan 15 has stopped
A sufficiently large volume is formed so that the cold air therein does not affect the temperature inside the container C by natural convection to lower the temperature below the allowable error below the set temperature. That is, after the rotation of the fan 15 is stopped,
Until the fan 15 starts rotating again, the cool air generation chamber 1
The temperature in 0 is rapidly cooled to a temperature lower than the set temperature of the temperature sensor 17, and an extreme temperature difference occurs between the temperature in the cold air generation chamber 10 and the temperature in the container C. Due to this extreme temperature difference, As a result of the experiment, the volume of the cold air generation chamber was determined so that natural convection does not occur and the cold air in the cold air generation chamber 10 does not flow out into the container C from the gap between the warm air suction port 18 and the fan 15 or the cold air discharge ports 16 and 16. According to the volume of the container, the cooling gas in the cold air generation chamber is formed in a volume that does not leak into the container for 1 to 10 minutes, preferably 3 to 5 minutes after the rotation of the fan is stopped.

Therefore, as time passes, the container C
When the inside temperature rises due to the outside temperature, the temperature sensor 17
By detecting the temperature in the container C by the fan 15, the fan 15 is rotated again, and the cooling chamber 2 again moves the temperature sensor 1 inside the container C.
Cool to the set temperature of 7.

Further, in the cold aviation container of this embodiment, a drain orifice 19 is provided at an arbitrary position on the bottom wall 21 of the cold air generating chamber 10 for communicating the inside of the container C with the cold air generating chamber 10. The drain orifice 19
Although not limited to one, one may be provided on each of the left and right sides in the width direction of the container as shown in FIG. The diameter should be small enough not to affect it, and the minimum number should be used. Therefore, during heat exchange in the cold air generation chamber 10,
Inevitably, the water droplets generated on the lower surface of the partition plate 7 fall on the bottom wall 21, and pass through the drain orifices 19 and 19 and a drain pipe (not shown) connected to the drain orifice 19 in the container C. It is drained to a water receiving container such as a bottle that is detachably fixed below.

The dry ice put into the solid refrigerant storage chamber 12 sublimes to generate carbon dioxide gas, which is discharged from the carbon dioxide gas outlet 13 to the outside air.

The warm air suction port 18 of the conventional container C is also used.
In addition, a louver board that can be freely opened and closed in conjunction with the rotation and stop operation of the fan 15 as provided in a general ventilation fan may be provided. As a result, in the cooling chamber 2, the cool air discharge port 16,
Since only 16 is an opening communicating with the container C, natural convection between the cooling chamber 2 and the container C can be prevented.

The openable and closable louver boards may be provided at the cool air discharge ports 16, 16 or both of them and the warm air suction port 18, and the warm air suction port 18 and the cold air discharge port 1 may be provided.
Both 6 and 16 can be provided in conjunction with each other.

[0028]

Since the present invention is constructed as described above, it has the following effects.

(1) A cooling chamber provided with a bottom wall and a side wall on the upper part near the end wall of the container and a lid for sealing is provided on the upper part,
The cooling chamber is partitioned into upper and lower parts by a partition plate having excellent thermal conductivity, and a solid refrigerant storage chamber for storing a solid refrigerant such as dry ice or ice is formed above the partition plate, and below the partition plate of the solid refrigerant storage chamber. A cold air generating chamber for exchanging heat with a cold air discharge port and a warm air suction port provided with a fan are provided on the side wall, and the warm air suction port communicates with the cold air generating chamber via a warm air passage. Since the cold air discharge port and the warm air suction port are provided at the same height while communicating with the cold air discharge port through the cold air passage, after the rotation of the fan of the warm air suction port is stopped, A cool air container that can reliably control the temperature in the container C without causing the natural air convection between the cold air generating chamber and the container to cause the cool air in the cold air generating chamber to flow out into the container C. Could be provided.

(2) Since the drain orifice which connects the cold air generating chamber and the inside of the container is provided on the bottom wall of the cold air generating chamber, the water droplets due to the dew condensation generated in the cold air generating chamber pass through the drain orifice 19 and then inside the container C. the can be accommodated in the receiving vessel, while preventing the lowering the cooling efficiency, as further known <br/> container directing cool air to the ceiling of the container in the duct, water droplets condensed on the ducts in the container Without damaging or corroding your cargo,
In addition, it is easy to clean because it prevents corrosion due to the drain of aluminum and other components that make up the container.

(3) In addition to the above structure, since the louver board that can be opened and closed in association with the operation of rotating and stopping the fan is provided at the warm air intake port and / or the cool air discharge port, the fan of the warm air intake port is provided. Even if the rotation of the cold air is stopped, it is possible to reduce natural convection between the cold air generating chamber and the container as in the case of the conventional cold aviation container, so that the amount of the cold air flowing into the cold air generating chamber is suppressed to a small amount. I was able to.

(4) In addition, after the rotation of the fan is stopped, the cooling gas in the cold air generating chamber is formed into a volume that does not leak into the container for 1 to 10 minutes, preferably 3 to 5 minutes. To prevent an extreme temperature difference between the temperature inside the cold air generation chamber and the inside of the container, and the natural air causes the cool air in the cold air generation chamber to leave a gap between the warm air intake port and the fan between the time the fan stops rotating and the time it restarts. It is possible to effectively prevent the cold air from flowing out into the container from the discharge port.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a cold air container according to the present invention.

FIG. 2 is a perspective view showing a main part of a cold air container according to the present invention.

FIG. 3 is an overall perspective view of a conventional cold air container according to the present invention.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a main part of a conventional cold air container.

[Explanation of symbols]

 1 Door 2 Cooling Chamber 3 End Wall 4 Lid 5 Control Box 6 Lid 7 Separator 8 Vertical Partition Plate 9 Dry Ice (Solid Refrigerant) 10 Cold Air Generation Chamber 11 Circulation Passage 11a Warm Air Passage 11b Cold Air Passage 12 Solid Refrigerant Storage Chamber 13 Carbon Dioxide Gas Discharge port 14 Cold air guide plate 15 Fan 16 Cold air discharge port 17 Temperature sensor 18 Warm air suction port 19 Drain olefins 21 Bottom wall 22 Side wall 111 Warm air vent 112 Cold air vent C Container

Claims (1)

(57) [Scope of utility model registration request] 1. An upper part near the end wall of the container is partitioned by a bottom wall and a side wall, a cooling chamber having a sealing lid is provided on the upper part, and the cooling chamber is vertically partitioned by a partition plate having excellent heat conductivity, The partition plate
The upper cooling chamber stores solid refrigerant such as dry ice and ice
Solid refrigerant storage chamber, and below the partition plate is a container
Introducing air inside, the diaphragm and the cold air generation chamber for cold and heat exchange solid refrigerant storage chamber via a cold air discharge port communicating through said cold air generation chamber and cold aisles
And a fan that communicates with the cool air generation chamber through the warm air passage.
The warm air suction port on the side wall has the same height as the bottom edge.
And place it at the same temperature and / or cool the intake
The air outlet is linked to the rotation and stop operation of the fan.
A louver boat that can be opened and closed by
The generation chamber is preferably kept for 1 to 10 minutes after the rotation of the fan is stopped.
For 3 to 5 minutes, the cooling gas in the cold air generation chamber is the container.
It is formed in a volume that does not leak inside, and the cold air generating chamber and the inside of the container are provided on the bottom wall of the cold air generating chamber.
A drain orifice communicating with the drain orifice is provided.
Device and a water container such as a bottle installed in the lower part of the container.
Cold aviation container characterized by communicating through a rain pipe .