WO2001053763A1

WO2001053763A1 - Atmosphere control device for dry container

Info

Publication number: WO2001053763A1
Application number: PCT/JP2000/000209
Authority: WO
Inventors: Hidemi Yonemoto; Shigeo Chikamori
Original assignee: Nippon Yusen Kabushiki Kaisha; Nyk Logistics Technology Institute Co., Ltd.
Priority date: 2000-01-19
Filing date: 2000-01-19
Publication date: 2001-07-26
Also published as: JP3637311B2; AU2000230733A1

Abstract

An atmosphere control device for dry container, comprising a device main body (5) and a plurality of dry containers (2), (3), and (4) connected to each other through ducts (7), (8), and (9), respectively, wherein the device main body (5) supplies dry air (37) dehumidified by a dehumidifier (28) to the dry containers (2), (3), and (4) through a booster fan (29) and a distribution device (31), whereby the inside of each of the dry containers (2), (3), and (4) is dehumidified, thus preventing dew condensation from occurring; if the dry containers (2), (3), and (4) must be cooled, dry air (37) from the dehumidifier (28) is supplied to the dry containers (2), (3), and (4) after it is cooled by a cooling device (33).

Description

Atmosphere controller for dry containers Technical field

The present invention relates to an atmosphere control device for a dry container, and more particularly to an atmosphere control device for a dry container that can prevent cargo damage due to dew condensation inside the dry container. Background art

Generally, when transporting goods that require humidity control, such as precision equipment and hygroscopic products, it is customary to use a refrigeration container that additionally has a dehumidification function accompanying air cooling. However, due to transportation cost problems, dry containers have recently been used for transportation.

By the way, dry containers do not have means for dehumidifying the inside of the container, so when transporting cargo that requires humidity control, it is necessary to install new dehumidifying means inside the dry container. However, if dehumidifying means is installed in all dry containers, equipment costs will increase, and in most cases cargo will not require humidity control, so it is practical to install dehumidifying means in all dry containers. Not a target.

Even for cargoes that require humidity control, humidity control is not necessary in the entire transportation process.Humidity control is particularly necessary when a dry container is loaded on a ship and transported by sea. While the dry container is being stored in the container terminal.

Therefore, if humidity control can be performed for only these two periods, There is no need to install dehumidifying means directly in the rye container.

The present invention has been made in view of such a situation, and it is possible to simultaneously control the atmospheres in a plurality of dry containers to prevent damage to cargo due to dew condensation only during a period in which humidity control is required. An object of the present invention is to provide an atmosphere control device for a dry container that can perform an atmosphere control that meets conditions of each dry container even when conditions in the dry container are different.

Another object of the present invention is to provide a dry container atmosphere control device that can effectively prevent the occurrence of dew condensation in a dry container. Another object of the present invention is to provide an atmosphere control device for a dry container that can accurately detect the dew point temperature even when the outside temperature fluctuates significantly.

Another object of the present invention is an atmosphere control device for a dry container, which can stabilize the atmosphere inside the dry container for a longer time even when the humidity outside the dry container fluctuates greatly. To provide

Another object of the present invention is to ensure the safety of cargoes, such as bleaching powder, which is likely to ignite spontaneously due to temperature rise, and plastic products, which are likely to be deformed due to temperature rise. It is to provide an atmosphere control device for a dry container.

Another object of the present invention is to provide a dry container atmosphere control device that can supply dry air at a flow rate required for each dry container to each dry container from the apparatus main body side.

Another object of the present invention is to provide an atmosphere control device for a dry container, which can be transported, installed and stored using the same handling equipment as a dry container for controlling the atmosphere, and which is easy to handle. To provide You.

Still another object of the present invention is to provide an atmosphere control device for a dry container which can efficiently store long ducts and is easy to operate. Disclosure of the invention

The present invention relates to a plurality of container-shaped dry containers having double doors at the rear end; connected to each of these dry containers via a duct, and supplies conditioned air to each of the dry containers to supply the adjusted air to each of the dry containers. The dry container, an air supply port to which the duct is connected, an exhaust port for discharging air in each dry container, and an atmosphere state in each dry container. And a dehumidifier for drying the processing air, and a dry air from the dehumidifier to each dry container based on a detection signal from each of the atmosphere detection mechanisms. And a control means for controlling the supply amount of water. By connecting each dry container to the equipment body only during the period when humidity control is required, the atmosphere in a plurality of dry containers can be simultaneously controlled to prevent cargo damage due to condensation. However, since the amount of dry air supplied to each dry container is controlled by the control means, even if the conditions in each dry container are different, it is possible to control the atmosphere according to the conditions of each dry container. it can.

According to the present invention, the atmosphere detection mechanism may be configured to include at least one of a humidity sensor for detecting humidity in the dry container and a dew point temperature detection sensor for detecting dew point temperature in the dry container. It is characterized by doing. As a result, dew condensation in the dry container can be effectively prevented, the device configuration is simple, and the device can be easily installed in an empty space. It can be placed without any obstacle to cargo loading.

The present invention is also characterized in that the dew point temperature detection sensor comprises a temperature and humidity sensor for detecting the temperature and humidity in the dry container, and an outer plate temperature sensor for detecting the outer plate temperature of the dry container. I do. As a result, even when the outside temperature fluctuates significantly, the dew point temperature can be accurately detected.

The present invention is further characterized in that the exhaust port is provided with an opening / closing mechanism that opens and closes with a pressure difference between a pressure inside the dry container and an external pressure. Thus, even when the humidity outside the dry container fluctuates significantly, the atmosphere inside the dry container does not fluctuate due to the external humidity, and the atmosphere inside the dry container can be maintained for a longer time. It can be stabilized, and there is no need to pay attention to opening and closing the exhaust port.

The present invention is also characterized in that a cooling mechanism for cooling dry air from the dehumidifier is provided in the apparatus main body. As a result, even if the cargo is bleached powder that may be ignited spontaneously due to a rise in temperature or plastic products that may be deformed due to a rise in temperature, the inside of each dry container is cooled by the cooled dry air, Cargo safety can be ensured.

The present invention is also characterized in that the control means is provided with a supply amount adjusting mechanism for adjusting the supply amount of dry air from the dehumidifier side in accordance with the flow rate of dry air required in each dry container. As a result, dry air at a flow rate required for each dry container can be supplied to each dry container from the apparatus main body side.

The present invention is also characterized in that the apparatus main body is assembled in a single dry container dedicated to storage, and a duct storage mechanism for storing a duct is provided in the dry container. This allows the device body to be It can be transported, installed and stored using the same handling equipment as a dry container that performs air control, and is easy to handle. In addition, ducts can be stored in the dry container for storing the equipment itself, making it easier to handle.

The present invention further provides a duct storage mechanism comprising: a winding drum for winding a duct; a plurality of winding drums being mounted at intervals in a circumferential direction, and being rotatably driven by a drive source to form an arbitrary winding drum. And a rotating wheel that moves to a predetermined work position. In this way, long ducts can be stored efficiently and work is easy. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an overall configuration diagram showing an atmosphere control device for a dry container according to a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing details of an air supply port portion.

FIG. 3 is a partial sectional view showing details of an exhaust port portion.

FIG. 4 is an explanatory diagram showing a configuration of the dehumidifier.

FIG. 5 is an explanatory diagram showing the configuration of the distribution device.

FIG. 6 is an explanatory diagram showing the configuration of the duct housing mechanism.

FIG. 7 is a left side view of FIG.

FIG. 8 is a diagram corresponding to FIG. 3, showing a second embodiment of the present invention. FIG. 9 is a diagram corresponding to FIG. 3, showing a third embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 shows a dry container atmosphere control device 1 according to a first embodiment of the present invention. It comprises several, for example, three dry containers 2, 3, and 4, and a device body 5 for adjusting the atmosphere inside each of the dry containers 2, 3, and 4. It is installed in a single dry container 6 for storage that has the same structure as 2, 3, and 4. The main unit 5 is separately connected to the dry containers 2, 3, and 4 via ducts 7, 8, and 9, so that the conditioned air can be supplied into the dry containers 2, 3, and 4. ing.

As shown in Fig. 1, the dry containers 2, 3, 4, and 6 have a container shape with double doors 2a, 3a, 4a, and 6a at the rear end, and are used exclusively for storage. Other dry containers 2, 3, and 4 except for the dry container 6 of the above, the tip of each of the ducts 7, 8, 9 is detachably attached to one upper end of each of the doors 2a, 3a, and 4a. At the top of the front wall facing the doors 2a, 3a, 4a, there are dry containers 2, 3, , 4 are provided with exhaust ports 13, 14, 15 to exhaust the air to the outside.

As shown in FIG. 2, each of the air supply ports 10, 11, and 12 is

2a, 3a, 4a, a cylindrical main body 16 penetrating through each door 2a,

A bottomed cylindrical safety force bar 17 fixed to the inner surfaces of 3a and 4a and connected to the main body 16 is provided. An engagement concave portion 16a is provided, and a net-like guard member 17a for preventing entry of foreign matter is attached to an upper end opening of the safety cover 17.

On the other hand, as shown in FIG. 2, a connection fitting 18 is attached to the end of each of the ducts 7, 8, and 9, and an insertion portion 18 of the connection fitting 18 into the main body 16 is provided. On the outer peripheral surface of a, for example, two spherical engagement members 19 that are pressed and urged to the outer diameter side by a spring pressure (not shown) are incorporated. And this When the insertion portion 18a is inserted into the main body 16, the engagement members 19 are snap-locked to the engagement concave portions 16a, and the connection fittings 18 are connected to the air supply ports 10 and 11. , 1 2 can be temporarily fixed. The connection bracket 18 can be removed from each air supply □ 10, 11 and 12 by pulling it with a force higher than the snap engagement force with each engagement recess 16a of each engagement body 19. After removing the fitting 18, a cover C is attached to each air inlet 10, 11, 12 as shown by the dashed line in FIG. , 3, 4 are taken into account so as not to cause any trouble during normal use. In addition, even if the connection fitting 18 is removed from each of the air supply ports 10, 11, 12 when the atmosphere in each of the dry containers 2, 3, 4 is controlled, The safety cover 17 and the guard 17a can prevent rainwater and foreign matter from entering the dry containers 2, 3, and 4.

Further, as shown in FIG. 3, each of the exhaust □ 13, 14, 15 has a cylindrical main body 20 bent downward along the outer surface of each of the dry containers 2, 3, 4. An opening / closing mechanism 21 that opens and closes by a pressure difference between the internal pressure of each of the dry containers 2, 3, and 4 and an external pressure, and a net-like guard body 22 for preventing intrusion of foreign substances is provided inside the main body 20. It is assembled.

As shown in FIG. 3, the opening / closing mechanism 21 includes, as shown in FIG. 3, an inner flange-shaped valve seat 23 provided on the inner peripheral portion of the main body 20, And a spring 25 that constantly urges the valve element 24 in the seating direction. The opening / closing mechanism 21 has a pressure difference between the internal pressure of each of the dry containers 2, 3, and 4 and the external pressure. When the biasing force of the spring 25 is exceeded, the valve element 24 is separated from the valve seat 23 and opened, and the air inside each of the dry containers 2, 3, and 4 is discharged to the outside. .

The interior of each of the dry containers 2, 3, and 4 is shown in Fig. 1. As described above, near the exhaust ports 13, 14, and 15, a humidity sensor 26 for detecting the relative humidity inside each of the dry containers 2, 3, and 4, and a humidity sensor 26 for detecting the relative humidity inside each of the dry containers 2, 3, and 4. A dew point temperature detection sensor 27 for detecting the dew point temperature is provided, and the dew point temperature detection sensor 27 is a temperature and humidity sensor 27a for detecting the temperature and humidity inside each of the dry containers 2, 3, and 4. And a skin temperature sensor 27b for detecting the skin temperature of the top wall or side wall of each of the dry containers 2, 3, and 4. The sensors 26, 27a, and 27b constitute an atmosphere detection mechanism for detecting the atmosphere state in each of the dry containers 2, 3, and 4. The detection signal is It is sent to the apparatus body 5 described in detail later.

As shown in FIG. 1, the device body 5 includes a dehumidifier 28 for dehumidifying the processing air, a booster fan 29 for increasing the pressure of the dry air from the dehumidifier 28, and an air supply pipe 30. And a distribution device 31 connected to the booster fan 29 to distribute the dry air from the booster fan 29 to each of the dry containers 2, 3, and 4. A pressure sensor 32 for detecting the pressure at the outlet of the fan 29 is provided, and between the dehumidifier 28 and the booster fan 29, it is necessary to cool the inside of each of the dry containers 2, 3, and 4. A cooling device 33 that is activated at a certain time is interposed. The device main body 5 is controlled by a control device 34.

The cooling device 33 is composed of a refrigeration cycle having a compressor, a condenser and an evaporator, and cools the dry air sent to the booster fan 29 by the heat absorption in the evaporator. I have. The exhaust heat from the condenser is effectively used in the dehumidifier 28. That is, the dehumidifier 28 is formed in a drum shape as shown in FIG. A honeycomb rotor 35 having a honeycomb structure is provided. The honeycomb rotor 35 is divided into a processing air chamber for producing dry air and a regeneration air chamber for discharging moisture absorbed (not shown). It is designed to be driven to rotate in a predetermined direction. In FIG. 4, a portion indicated by reference numeral A is a portion corresponding to the processing air chamber, and a portion indicated by reference numeral B is a portion corresponding to the regeneration air chamber.

As shown in FIG. 4, the processing air 36 passes through a portion A corresponding to the processing air chamber of the honeycomb rotor 35, and by this passage, the moisture in the processing air 36 becomes a honeycomb. Moisture is absorbed by the rotor 35, and is discharged from the honeycomb rotor 35 as dry air 37. The dry air 37 is cooled by the heat exchanger 38 and then sent out to the cooling device 33 by the processing fan 39. The outside air 41 is introduced into the heat exchanger 38 by the activation of the heat exchange fan 40, and the dry air 37 from the honeycomb rotor 35 is heated by the heat from the outside air 41. It is designed to be cooled by replacement.

On the other hand, as shown in FIG. 4, the regeneration air 42 is supplied to the portion B corresponding to the regeneration air chamber of the honeycomb rotor 35 after being heated by the regeneration heater 43. The honeycomb rotor 35 wet by moisture absorption is heated and regenerated by the high-temperature regenerated air 42, and the removed water is discharged to the outside by the regenerating fan 45 as moist air 44. Normally, outside air is used as the regeneration air 42, but when the cooling device 33 is operating, outside air heated by exhaust heat from the condenser is used. ing. As a result, even if the output of the reproducing heater 43 is reduced, a sufficient reproducing effect can be obtained.

In the dehumidifier 28, for example, the processing air is heated to a temperature of 32 ° C. When it is 70%, the dry air 37 on the outlet side of the honeycomb rotor 35 becomes high-temperature dry air with a temperature of 61 ° C and a humidity of 10%, and the dry air 37 on the outlet side of the heat exchanger 38 has a temperature of 35 ° C, Low-temperature dry air with a humidity of 38%, and a sufficient dehumidifying effect can be obtained.

As shown in FIG. 5, the distribution device 31 includes a container-shaped main body 46. The main body 46 includes an air supply pipe 47 to which the air supply pipe 30 is connected, and the ducts 7 and 8. For example, three distribution pipes 48, 49, and 50 are provided, respectively, to which the base ends of the pipes 8 and 9 are detachably connected, and the distribution pipes 48, 49, and 50 are provided with air flow control valves 51, 52, 53 are provided respectively. The flow rate of the dry air 37 supplied to each of the dry containers 2, 3, and 4 is controlled by controlling the opening degree of each of the air flow control valves 51, 52, and 53.

The control of the opening of each of the air flow regulating valves 51, 52, 53 is performed by a control signal from the control device 34, and the control signal is transmitted by the humidity sensor 26 and the dew point temperature detection. When a detection signal from the sensor 27 is input to the control device 34, it is output.

The control device 34 also constantly monitors the blowing pressure detection signal from the pressure sensor 32 (see FIG. 1), and when the value exceeds a set value, the booster fan 29 and the dehumidifying device shown in FIG. The rotation speed of each fan 39, 40, 45 (especially the processing fan 39) of the machine 28 is reduced, and the air pressure is controlled so as to be lower than the set value.

As shown in FIG. 1, in the dry container 6 dedicated to storage, a duct storage mechanism 54 is assembled together with the apparatus main body 5, and the ducts 7, 8, 9 or Spare ducts can be stored in the compact. That is, as shown in FIGS. 6 and 7, the duct storage mechanism 54 is mounted on a rotating wheel 55 that rotates around a central axis 56, and is mounted on the rotating wheel 55 at equal intervals in the circumferential direction. For example, four winding drums 57 are provided, and each of the ducts 7, 8, 9 or a spare duct is wound on each of the winding drums 57.

As shown in FIGS. 6 and 7, the rotating wheel 55 includes a gear-shaped main wheel 55a and a sub-wheel 55b opposed to the main wheel 55a at a predetermined interval. A drive gear 58 is always coupled to the main wheel 55a, and the drive wheel 58 is driven by a motor (not shown) so that the rotating wheel 55 rotates around the central shaft 56. It is supposed to.

On the other hand, as shown in FIGS. 6 and 7, each winding drum 57 has its center axis 59 supported by the wheels 55a, 55b, and both wheels 55a, 55b. The driven gears 60 are fixed to end portions of the center shafts 59 on the main wheel 55 a side, respectively, and the driven gears 60 rotate. Each time the wheel 55 is rotated 90 degrees, it is sequentially engaged with the drive gear 61.

That is, as shown in FIG. 6, the driving gear 61 is fixed at a position 45 degrees below and to the left diagonally, and the driven gears 60 rotate the rotating wheels 55 to rotate the respective winding drums. When 57 is moved to the position of the drive gear 61, only the driven gear 60 corresponding to the winding drum 57 is engaged with the drive gear 61, and the drive gear 61 is forward / reverse by a motor (not shown). By rotating, the take-up drum 57 can be rotated forward and backward. Next, the operation of the present embodiment will be described.

In the connection state shown in Fig. 1, the relative humidity of the atmosphere in each of the dry containers 2, 3, and 4 is constantly detected by the humidity sensor 26, and the temperature and humidity are constantly detected by the dew point temperature detection sensor 27. Is done. And When the relative humidity exceeds a predetermined set humidity value, or when the atmosphere in each of the dry containers 2, 3, and 4 becomes lower than the dew point temperature, the dry air 37 is supplied from the device body 5 side. Supplied to dry containers 2, 3, and 4. Here, the dew point temperature is detected by the following method.

That is, the saturation absolute humidity is obtained from the skin temperature detected by the skin temperature sensor 27b, and the absolute humidity is calculated from the temperature and humidity inside each of the dry containers 2, 3, and 4 detected by the temperature and humidity sensor 27a. Desired. Then, when the absolute humidity value exceeds the saturation absolute humidity value, it is determined that the temperature has dropped below the dew point temperature.

Dry air 37 from the main unit 5 side is first supplied to the dry containers 2, 3, and 4 from the air supply ports 10, 11, and 12, and the inside of each dry container 2, 3, 4, and is fluorinated. After flowing toward the wall, the air is exhausted from the exhaust □ 13, 14, 15. At this time, since the opening / closing mechanism 21 is provided for each exhaust □ 13, 14, 15, dry air 37 is supplied into each dry container 2, 3, 4 to increase the pressure inside. The opening / closing mechanism 21 is open only during the operation, and the exhaust ports 13, 14, and 15 are closed by the opening / closing mechanism 21 during other periods. For this reason, a problem that occurred when external high-humidity air flows into each of the dry containers 2, 3, and 4 from the exhaust ports 13, 14, and 15 and the internal humidity rises in a short time. Absent.

By the way, it is customary that cargoes are almost fully loaded in the dry containers 2, 3, and 4, but the dry containers 2, 3, and 4 are located just below the ceiling wall. Voids are always formed, and the air supply ports 10, 11, 12, and each exhaust □ 13, 14, 15, 15 force s, near the ceiling wall of each dry container 2, 3, 4 Since it is provided, the dry air 37 mainly flows through the gap. Moreover, each air inlet 10, 11, 12 and each exhaust □ 13, 14, 15 are connected diagonally as shown in Fig. 1. Because of the deviation, the dry air 37 can be flowed almost uniformly over the entire area of the gap. Since dew condensation usually occurs on the ceiling wall of each of the dry containers 2, 3, and 4, the practical effect of intensively flowing dry air 37 into this portion is extremely large.

In this way, by supplying the dry air 37 to each of the dry containers 2, 3, and 4, a force capable of dehumidifying the inside and preventing the occurrence of dew condensation. Although the set values of relative humidity are different between,, and 3 or the set values are the same, a larger amount of dry air 37 may be required because the type of cargo is different. In such a case, rather than supplying the same flow rate of the dry air 37 to each of the dry containers 2, 3, and 4, the supply amount of the dry air 37 between the dry containers 2, 3, and 4 is changed. There are things you should do.

Therefore, in the present embodiment, the opening of each of the air flow control valves 51, 52, 53 shown in FIG. 5 is adjusted, and the dry air 37 to each dry container 2, 3, 4 is adjusted. The supply amount is controlled. Thus, the inside of each of the dry containers 2, 3, and 4 can be efficiently dehumidified.

By the way, depending on the state of the opening adjustment of each of the air flow regulating valves 51, 52, 53, the flow rate of the dry air 37 supplied from the booster fan 29 to the distribution device 31 is smaller than the flow rate of the dry air 37 supplied to the distributor 31. The flow rate of the dry air 37 supplied to each of the dry containers 2, 3, and 4 may decrease. In this case, the pressure in the air supply pipe 30 gradually increases, which is not preferable.

Therefore, in the present embodiment, the pressure on the outlet side of the booster fan 29 is constantly detected by the pressure sensor 32, and when the pressure in the air supply pipe 30 exceeds the set value, the booster fan 29 and The rotation speed of each fan 39, 40, 45 of the dehumidifier 28 is reduced. Then, the flow rate of the dry air 37 supplied from the booster fan 29 side to the distribution device 31 and the The flow rate of the dry air 37 delivered from the distribution device 31 can be made the same.

Depending on the type of cargo loaded in each of the dry containers 2, 3, and 4, for example, bleaching powder that may cause spontaneous ignition due to temperature rise, plastic products that may be deformed due to temperature rise, etc. When it is necessary to not only dehumidify the inside of each dry container 2, 3 and 4, but also cool the inside of each dry container 2, 3 and 4 to a temperature that can protect the cargo There is.

Therefore, in the present embodiment, when it is necessary to cool the inside of each of the dry containers 2, 3, and 4, the cooling device 33 shown in FIG. 1 is started and the dry air from the dehumidifier 28 is dried. After cooling 37, it is sent to the booth evening fan 29 side. As a result, the cooled dry air 37 is supplied to each of the dry containers 2, 3, and 4, and the cargo can be protected.

In this case, unlike the case of the refrigeration container, it is not necessary to cool the inside extremely low, for example, by lowering the temperature that has risen to about 60 ° C to about 30 to 40 ° C, for example. As long as it is sufficient, a sufficient cooling effect can be obtained even for ready-dried containers 2, 3, and 4 that do not have a heat insulating structure. Thus, by connecting the apparatus body 5 and each of the dry containers 2, 3, and 4 via the respective ducts 7, 8, and 9, the atmosphere in the plurality of dry containers 2, 3, and 4 can be controlled simultaneously. In addition, it is possible to prevent the cargo from being damaged due to condensation or high temperature.

In addition, since the main unit 5 and the dry containers 2, 3, and 4 are completely separate structures, the main unit 5 and each of the dry containers 2, 3, and 4 are only provided during periods when humidity control is required. Can be connected to control atmosphere. For this reason, structural changes to be made to each dry container 2, 3, 4 must be minimized. Can be suppressed.

Further, since the flow rate of the dry air 37 supplied to each of the dry containers 2, 3, and 4 can be controlled, the atmosphere can be controlled according to the conditions of each of the dry containers 2, 3, and 4.

In the first embodiment, the case where three dry containers 2, 3, and 4 are simultaneously controlled has been described, but the number is not limited as long as two or more dry containers are used.

FIG. 8 shows a second embodiment of the present invention, in which an opening / closing mechanism 71 is used in place of the opening / closing mechanism 21 in the first embodiment.

That is, as shown in FIG. 8, the opening / closing mechanism 71 includes an elastic bag 72 made of rubber or the like that is mounted and fixed in the main body 20. At the lower end of the elastic bag 72, An arbitrary number of cuts 73 are provided, and the cuts 73 are normally completely closed in a normal state. Then, when the pressure inside the dry containers 2, 3, 4 becomes higher than the external pressure and the elastic bag 72 expands, the cut 73 opens, and the dry containers 2, 3, 4 4 Internal air is exhausted to the outside.

In other respects, the configuration is the same as that of the first embodiment, and the operation is the same.

Thus, even if this opening / closing mechanism 71 is used, the same effect as in the first embodiment can be expected.

FIG. 9 shows a third embodiment of the present invention, wherein an opening / closing mechanism 81 is used instead of the opening / closing mechanism 21 in the first embodiment.

That is, as shown in FIG. 9, the opening / closing mechanism 81 includes a discharge pipe 82 provided inside the main body 20 and having an open end inclined obliquely. An opening / closing lid 83 attached to the opening end of the opening 82 so as to be able to swing up and down is provided. The opening / closing lid 83 normally closes the opening end of the discharge pipe 82 by its own weight in a normal state. When the pressure inside each of the dry containers 2, 3, and 4 becomes higher than the external pressure, the pressure difference raises the open / close lid 83, opening the open end of the discharge pipe 82. It has become so.

Thus, even if this opening / closing mechanism 81 is used, the same effect as in the first embodiment can be expected.

In the above embodiments, the case where the humidity sensor 26 and the dew point temperature detection sensor 27 are separately provided has been described. However, the temperature and humidity sensor 27 a of the dew point temperature detection sensor 27 is At the same time, humidity can be detected. Therefore, if the temperature and humidity sensor 27a is provided, the humidity sensor 26 can be omitted.

Further, in each of the above embodiments, the case where the dew point temperature detection sensor 27 is constituted by the temperature and humidity sensor 27 a and the outer plate temperature sensor 27 b has been described. As long as the sensor can detect the value, another sensor such as a dew point temperature sensor or a condensation sensor may be used.

Further, in each of the above embodiments, the case where the honeycomb rotor 35 is used as the dehumidifier 28 has been described, but the cooling device 35 is configured with a refrigeration cycle, and the refrigeration cycle has a dehumidification function as well as a cooling function. Therefore, only the cooling device 35 may be used to perform both dehumidification and cooling.

As described above, the present invention provides a plurality of container-shaped dry containers having double doors at the rear end; And a main body for adjusting the atmosphere in each dry container by supplying conditioned air into each dry container. An exhaust port for discharging air in the dry container, an atmosphere detection mechanism for detecting an atmosphere state in each dry container, and a dehumidifier for drying process air in the apparatus body; Control means is provided to control the amount of dry air supplied from the dehumidifier to each dry container based on the detection signal from the detection mechanism. By connecting the air conditioner and the equipment body, the atmosphere in multiple dry containers can be controlled at the same time to prevent damage to the cargo due to condensation. In addition, since the supply amount of dry air to each dry container is controlled by the control means, even if the conditions in each dry container are different, it is possible to control the atmosphere in accordance with the conditions of each dry container. it can. According to the present invention, the atmosphere detecting mechanism is constituted by at least one of a humidity sensor for detecting humidity in the dry container and a dew point temperature detecting sensor for detecting dew point temperature in the dry container. Therefore, dew condensation in the dry container can be effectively prevented, the equipment configuration is simple and the equipment can be easily installed in an empty space, and there is no hindrance to cargo loading.

According to the present invention, the dew point temperature detecting sensor is constituted by a temperature and humidity sensor for detecting the temperature and humidity in the dry container and an outer plate temperature sensor for detecting the outer plate temperature of the dry container. Even if the temperature fluctuates significantly, the dew point temperature can be accurately detected.

According to the present invention, since the exhaust port is provided with an opening / closing mechanism that opens and closes based on a pressure difference between the pressure inside the dry container and the external pressure, even when the humidity outside the dry container fluctuates significantly. In a dry container The atmosphere does not fluctuate due to external humidity, the atmosphere in the dry container can be stabilized for a longer time, and there is no need to pay attention to opening and closing the exhaust port.

According to the present invention, since a cooling mechanism for cooling the dry air from the dehumidifier is provided in the apparatus main body, the cargo may be spontaneously ignited due to a rise in temperature, or may be deformed due to a rise in temperature or a rise in temperature. Even in the case of a plastic product or the like, the inside of each dry container is cooled by the cooled dry air, so that the safety of the cargo can be ensured.

According to the present invention, the control means is provided with a supply amount adjusting mechanism for adjusting the supply amount of dry air from the dehumidifier in accordance with the flow rate of dry air required in each dry container. Dry air can be supplied to each dry container from the main unit side at the required flow rate.

According to the present invention, the apparatus main body is assembled in a single dry container dedicated to storage, and a duct storage mechanism for storing ducts is provided in the dry container. It can be transported, installed and stored using the same handling equipment as the dry container, and handling is easy. In addition, since the duct can be stored in the dry container for storing the main body of the apparatus, the handling is easier.

The present invention further provides a duct storage mechanism comprising: a winding drum for winding the duct; a plurality of winding drums mounted at intervals in a circumferential direction, and any of the winding drums driven to rotate by a drive source. And a rotating wheel for moving the to a predetermined work position, so that long ducts can be efficiently stored and the work is easy. Industrial applicability As described above, the dry container atmosphere control device according to the present invention is useful as a device that simultaneously controls the atmosphere in a plurality of dry containers, and particularly prevents the occurrence of dew condensation in each dry container. Suitable as a device.

Claims

The scope of the claims

1. A plurality of container-shaped dry containers having double doors at the rear end; connected to each of these dry containers via a duct, and supply conditioned air to each of the dry containers to provide an atmosphere in each of the dry containers. Each dry container has an air supply port to which the duct is connected, an exhaust port for discharging air in each dry container, and an atmosphere state in each dry container. An atmosphere detection mechanism, wherein the apparatus body controls a dehumidifier for drying the processing air, and a supply amount of dry air from the dehumidifier to each dry container based on a detection signal from each of the atmosphere detection mechanisms. An atmosphere control device for a dry container, comprising:

2. The atmosphere detecting mechanism is characterized by having at least one of a humidity sensor for detecting humidity in the dry container and a dew point temperature detecting sensor for detecting dew point temperature in the dry container. The atmosphere control device for a dry container according to claim 1, wherein:

3. The dew point temperature detection sensor has a temperature and humidity sensor for detecting the temperature and humidity in the dry container and an outer plate temperature sensor for detecting the outer plate temperature of the dry container. Item 3. The atmosphere control device for a dry container according to item 2.

4. The exhaust system according to claim 1, wherein the exhaust port has an opening / closing mechanism for opening / closing by a pressure difference between a pressure inside the dry container and an external pressure. Atmosphere controller for dry containers.

5. The dry container atmosphere control device according to claim 1, wherein the device main body has a cooling mechanism for cooling dry air from the dehumidifier. .

6. The control means has a supply amount adjustment mechanism for adjusting the supply amount of dry air from the dehumidifier in accordance with the flow rate of dry air required in each dry container. Item 3. The atmosphere control device for a dry container according to item 1, 2 or 3.

7. The device body according to claim 1, wherein the main body of the apparatus is assembled in a single dry container dedicated to storage, and a duct storage mechanism for storing a duct is provided in the dry container. Item 4. An atmosphere control device for a dry container according to item 2 or 3.

8. The duct storage mechanism includes a winding drum for winding the duct; a plurality of winding drums are mounted at intervals in the circumferential direction, and are rotated by a drive source to perform a predetermined operation on a predetermined winding drum. The atmosphere control device for a dry container according to claim 7, further comprising: a rotating wheel that moves to a position.