WO2006019021A1

WO2006019021A1 - Refrigerating container and cold insulating operation control device of refrigerating container

Info

Publication number: WO2006019021A1
Application number: PCT/JP2005/014644
Authority: WO
Inventors: Yousuke Takahashi
Original assignee: Yanmar Co., Ltd.
Priority date: 2004-08-20
Filing date: 2005-08-10
Publication date: 2006-02-23

Abstract

A refrigerating container and a cold insulating operation control device of the refrigerating container. In one embodiment of the refrigerating container, the inside of the container is demarcated into a front chamber (2A) on a front wall side and a rear chamber (2B) on a rear wall side by a partition (13) installed in the container (2), the front chamber (2A) is set to a low temperature side and the rear chamber (2B) is set to a high temperature side, and the front chamber (2A) is cooled by a refrigerating unit (3) and the rear chamber (2B) is cooled by leading a cool air into the rear chamber (2B). The refrigerating unit (3) comprises a prime mover, a generator driven by the prime mover, and a refrigerating device having an electric compressor driven by an electric power generated by the generator. An electric heater (20) is installed in the rear chamber (2B).

Description

Specification

Refrigeration container and refrigerated container cooling operation control device

Technical field

[0001] The present invention relates to a refrigeration container. Further, the present invention controls the storage temperature by controlling each chamber in the container partitioned into the first chamber and the second chamber with different set temperatures as targets by an engine-driven generator-mounted refrigerator. The present invention relates to a refrigeration container in which different cargoes can be mixed, and more specifically, the temperature of the second chamber is controlled by introducing cool air from the refrigerator provided in the first chamber into the second chamber, and The present invention relates to a cold insulation operation control device provided with a control means for performing control so that a temperature is maintained by a heater provided in a second chamber when the temperature of the two chambers is excessively lowered.

Background art

[0002] Generally, in order to reduce the unit price of transportation, it is necessary to secure the loading capacity of transportation equipment, and the luggage at the time of reciprocation. In this case, when freight that does not require temperature management is transported, cargo can be secured by mixed loading.However, when freight that requires temperature management is transported, the restriction that the control temperature is the same is added, so mixed loading is not possible. It becomes very difficult.

[0003] For this reason, in refrigeration trucks and refrigerated containers, the cargo compartment is divided into a plurality of rooms with insulating partitions, and the partitions are movable so that they can be adjusted to the cargo volume. The interior is controlled in a plurality of temperature zones by placing an internal machine (heat exchanger) in the room and managing the temperature at individual temperatures (see, for example, Patent Documents 1 and 2).

[0004] On the other hand, in refrigeration trucks and refrigerated containers, in order to promote the circulation of cold air, a long floor material with a T-shaped cross section called T-rail is fixed to the floor surface, and the floor surface and cargo A cold air passage is secured between them (for example, see Patent Document 3).

[0005] In addition to providing guide rails on the left and right side walls, a traveling body having rollers on the guide rails is disposed, and the partition is rotatably connected to the traveling body via a hinge. Is moved to an arbitrary position inside the packing box, and the partition is flipped up to be selected between a storage position along the ceiling wall and a working position for partitioning the packing box back and forth (for example, And Patent Document 4). [0006] In addition, recent refrigerated containers are stored by dividing the interior of the container chamber into two front and rear chambers with movable heat insulating partition plates, and controlling the front and rear chambers with different set temperatures as targets. Transportation efficiency is improved by allowing cargoes with different temperatures to be mixed (see, for example, Patent Document 5).

[0007] For example, the front chamber is used as a freezer for storing frozen storage items that must be transported while maintaining frozen state such as frozen meat and frozen seafood, and the rear chamber is used for fresh vegetables and soft drinks. It is used as a refrigerator that stores refrigerated items that must be transported while maintaining the refrigerated state.

[0008] In this case, the refrigerated container is cooled by an engine-driven generator-mounted refrigerator. Specifically, for example, the set temperature of the freezer in the front chamber is set lower than the set temperature of the refrigerator in the rear chamber, and the refrigerator temperature control is performed by introducing cool air from the freezer into the refrigerator. Yes. In addition, when the temperature of the refrigerator is excessively lowered, the heater inside the refrigerator is controlled so as to maintain the temperature in the refrigerator.

Patent Document 1: Japanese Patent Laid-Open No. 10-59057

Patent Document 2: JP-A-5-238306

Patent Document 3: JP-A-8-189169

Patent Document 4: Japanese Patent Laid-Open No. 2003-114079

Patent Document 5: Japanese Unexamined Patent Application Publication No. 2004-122891

Disclosure of the invention

Problems to be solved by the invention

[0009] By the way, when a frozen product (20 ° C level) and a refrigerated product such as fresh food (0 ° C to 15 ° C level) are mixed and loaded in a refrigeration truck or container, the temperature difference between the two rooms Because it is large, the room temperature on the high temperature side is transferred to the room on the low temperature side along the inner wall, and a large amount of heat moves. As a result, the room on the high temperature side may be overcooled, or the room on the low temperature side may be undercooled, reducing the quality of the cargo.

In this case, in order to prevent overcooling of the room on the high temperature side, as described in Patent Documents 1 and 2, heating is performed using engine coolant or high-temperature refrigerant of the refrigerator. Break However, it is necessary to connect the refrigerator and engine to the inside of the warehouse, which not only complicates the structure but also causes problems such as leakage of cooling water and refrigerant due to defects in piping work. is there. If such a failure occurs during unmanned transportation of a refrigerated container, for example, during rail transportation, the product value may be lost because it cannot be handled for a long time.

[0011] In addition, when the so-called two-temperature zone control is performed in which the frozen product and the refrigerated product are mixed and the room is erroneously fixed to the storage position, and the temperature of each room is controlled to the freezing temperature and the refrigeration temperature, respectively. Since the inside of the container is not partitioned by the refrigeration temperature, the refrigeration product flows into the entire container, and as a result, the refrigerated product is frozen, resulting in the loss of commercial value of the refrigerated product.

[0012] On the other hand, since the T-rail has a large cross-sectional area and usually has a high thermal conductivity !, and an aluminum extrusion is used, a large amount of heat moves through the flooring. A large amount of heat flows through the cold air passages from the flooring. For this reason, when dividing the interior of the warehouse into multiple parts by partitioning, it is necessary to form the partition to match the cross-sectional shape of the flooring and block the cold air passage by the flooring, but the interior with a narrow entrance is wide Because of the cross-sectional shape of the flooring, it is difficult to form a partition that matches the cross-sectional shape of the flooring, and the cold air passage cannot be reliably sealed. In addition, the structure of the partition is complicated, and there is a drawback in that it takes time to install the partition. However, even if the cold air passage by the flooring is sealed, it is inevitable that a large amount of heat moves through the flooring with a large cross-sectional area.

[0013] In addition, in an engine-driven generator-mounted refrigerator in a refrigerated container as in Patent Document 5, the size of the refrigerator is about 20 ° C to 130 ° C when mounted on a container or truck. Designed to have the ability to cool down. In this case, as described above, if the two rooms of the refrigerator and the refrigerator are controlled at different set temperatures, that is, so-called two temperature zones, it is necessary to operate the compressor and the heater on the refrigerator side at the same time. However, in the refrigerator of the above design, if the compressor and the heater are operated at the same time, the generator (engine) is overloaded, which causes a problem in terms of safety.

[0014] In order to solve this problem, it is sufficient to install a generator (engine) with a capacity that is equivalent to the capacity of the compressor in addition to the capacity of the compressor, but this increases the size and weight of the generator. There was a problem that it was disadvantageous in terms of cost, cost and fuel consumption.

[0015] The present invention has been made in view of the above-described problems, and a first object is to provide a simple structure in which the internal temperature in which the refrigerated product is stored is subcooled below the refrigeration temperature. It is to provide a refrigerated container that can be reliably prevented.

[0016] The second purpose is to store the front chamber and the refrigerated product when the container is partitioned into a front chamber and a rear chamber of an arbitrary volume through a partition according to the cargo volume. The purpose of the present invention is to provide a refrigerated container that can suppress heat transfer between the rear chamber as much as possible.

[0017] A third object is to reduce heat leakage as much as possible when the inside of a container is divided into a front chamber and a rear chamber of an arbitrary volume according to the cargo volume through a partition. It is intended to provide a refrigerated container that can reliably control the front chamber for storing products to the refrigeration temperature and the rear chamber for storing refrigerated products to the refrigeration temperature.

[0018] The fourth object is that when the partition is in the storage position, the two-temperature zone control for controlling each room to the freezing temperature and the refrigeration temperature is prevented, and the refrigerated product is erroneously cooled to the freezing temperature. It is providing the refrigeration container which can prevent reliably.

[0019] The fifth purpose is to avoid the simultaneous driving of the compressor and the heater, so that the engine overload state can be avoided even with the capacity of the above-designed refrigerator, and the control of the two temperature zones is safe and stable. It is providing the cold-storage operation control apparatus of the refrigeration container which can be performed in the next. Means for solving the problem

[0020] The refrigerated container of the present invention includes a container formed of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation properties, and a refrigeration unit provided on the outer surface of the front wall of the container. The interior is partitioned into a front chamber on the front wall side and a rear chamber on the rear wall side through a partition movable along the inner surface of the container, and the front chamber is on the low temperature side and the rear chamber is on the high temperature side. A refrigeration container that sets and cools the anterior chamber by a refrigeration unit while cooling the anterior chamber by introducing cool air from the anterior chamber to the posterior chamber, the refrigeration unit being driven by the prime mover and the prime mover It is composed of a generator and a refrigeration apparatus having an electric compressor driven by electricity generated by the generator, and an electric heater for preventing overcooling is provided in the rear chamber. is there.

[0021] According to the refrigeration container having such a configuration, cargo (frozen products) is loaded and partitioned in the front chamber. On the other hand, after loading cargo (refrigerated products) in the rear chamber, operate the refrigeration unit to cool the front chamber to the freezing temperature. In other words, if the prime mover is driven, the generator is driven, and the electric compressor is driven by the electricity generated by the generator, and the air in the front chamber is heat-exchanged in the evaporator of the refrigeration system to cool it to the refrigeration temperature. . On the other hand, cool air from the front chamber is introduced to the rear chamber, and the rear chamber is cooled to the refrigeration temperature. Here, when the rear chamber is supercooled below the set refrigeration temperature, the rear chamber is heated by operating the electric heater using the electricity generated by the generator and heating the rear chamber. It is possible to reliably prevent cooling more than necessary.

As a result, it is possible to easily and surely prevent overcooling of the rear chamber by the ONZOFF control of the electric heater, and it is only necessary to connect the refrigeration unit and the electric heater by wiring. Compared to connecting a high-temperature refrigerant or a high-temperature refrigerant to the rear chamber via a pipe, the work should be easier, and the performance should be maintained over a long period of time without causing leakage of cooling water or refrigerant due to construction problems. Can do.

[0023] Alternatively, the refrigeration container of the present invention includes a container formed of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation, and a refrigeration unit provided on the outer surface of the front wall of the container. The interior is divided into a front chamber on the front wall side and a rear chamber on the rear wall side through a partition movable along the inner surface of the container, and the front chamber is on the low temperature side and the rear chamber is on the high temperature side. The refrigeration container cools the anterior chamber by a refrigeration unit and cools the anterior chamber by introducing the cool air from the anterior chamber to the posterior chamber, and forms the surface of the bottom wall flat, A plurality of slats are arranged in each, and a partition is disposed between a pair of adjacent slats.

[0024] Examples of the bottom wall having a flat surface include a steel plate such as stainless steel, a plastic plate such as FRP, and a wood subjected to water-resistant treatment. Although it is slightly inferior to FRP or wood, a stainless steel plate can be preferably used.

[0025] As described above, it is required to be lightweight and high-strength from the viewpoints of durability, handling and / or properties. Aluminum and FRP can be suitably used to meet these requirements. And by arranging the saws so that the vertical bars face the longitudinal direction, they are adjacent A cold air passage can be secured between the vertical rails.

[0026] According to the refrigerated container having such a configuration, after laying mushrooms in the front chamber, cargo (frozen products) is loaded and the partitions are fixed. If the partition is fixed, lay the mushrooms in the rear room and load the cargo (refrigerated goods). Then, operate the refrigeration unit to cool the anterior chamber to the refrigeration temperature. That is, the compressor of the refrigeration apparatus is driven, and the air in the front chamber is heat-exchanged in the evaporator to cool to the refrigeration temperature. On the other hand, cool air from the front chamber is introduced to the rear chamber, and the rear chamber is cooled to the refrigeration temperature.

[0027] In this case, the cold air blown into the front chamber and the cold air blown into the rear chamber circulate via the saw and the cold air does not stay.

[0028] As a result, the partition can be fixed at an arbitrary position with this length interval, and the internal space of the container can be divided into a front chamber and a rear chamber according to the cargo amount. In addition, since the surface of the bottom wall is formed flat, the structure of the partition is simplified, and it is possible to reliably seal without any gap between the cutting and the bottom wall. In addition, the cross-sectional area of the bottom wall becomes extremely small, and the amount of heat flowing through the bottom wall can be significantly reduced. Therefore, it is possible to suppress the relatively high temperature cold air in the rear chamber that houses the refrigerated product from flowing into the front chamber that houses the frozen product.

[0029] Alternatively, the refrigerated container of the present invention includes a container formed of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation, and a refrigeration unit provided on the outer surface of the front wall of the container. The interior is divided into a front chamber on the front wall side and a rear chamber on the rear wall side through a partition movable along the inner surface of the container, and the front chamber is on the low temperature side and the rear chamber is on the high temperature side. The refrigeration container that cools the front chamber by the refrigeration unit while the cool air in the front chamber is guided to the rear chamber and cools the rear chamber, and the heat of the refrigeration unit is located above the inner surface of the front wall. While providing the exchanger and fan, the outside of the flat ventilator with one end opened near the front wall, the other end opened in the rear chamber, and the inside divided into left and right sides over the entire width of the ceiling wall inner surface, Also, the front opening and the rear end of the ceiling wall inner surface A cool air fan and a circulation fan are installed inside, and an outside of the mixer where an electric heater is arranged facing the front of the circulation fan is provided. Further, heat exchange is performed on the inner surface of the front wall. An air passage that extends in the up-down direction is provided, while the mixing duct is opened rearward on the inner surface of the rear wall. An air passage extending in the vertical direction facing the mouth is provided, and the left and right rear chamber side openings of the ventilation duct are communicated with the front opening facing the cool air fan of the mixing duct, and sealed to the peripheral surface of the partition It is characterized in that a material is provided and is in close contact with the inner surface of the bottom wall, the inner surfaces of the left and right side walls formed on a flat surface, and the outer surface of the bottom wall of the air duct.

[0030] According to the refrigerated container having such a configuration, cargo (frozen product) is loaded into the front chamber and the partition is fixed, and after loading cargo (refrigerated product) into the rear chamber, the refrigeration unit is operated, Cool the anterior chamber to freezing temperature. That is, the compressor of the refrigeration unit is driven, and the air in the anterior chamber sucked through the fan is heat-exchanged in the heat exchanger and cooled to the refrigeration temperature. Also, the circulation fan is driven to circulate the air in the rear chamber. At this time, the circulating air in each of the front and rear chambers is guided downward through the air passages and blown out from the lower side to the upper side. The internal temperature distribution becomes uniform.

On the other hand, if the cool air fan is driven, the cool air in the front chamber is guided to the rear chamber through the left and right half of the ventilation duct, the mixing duct, and the air passage, so that the rear chamber can be cooled. At this time, the amount of air equivalent to the amount of air led to the rear chamber is returned from the rear chamber to the front chamber through the left and right other half of the ventilation duct. At this time, the relatively hot air in the rear chamber supplied to the front chamber is immediately sucked in by the fan and cooled in the heat exchanger, so that the frozen cargo is not affected.

[0032] Further, if the electric heater is operated, the air circulating in the rear chamber is heated by the electric heater, so that overcooling of the rear chamber can be prevented.

[0033] Furthermore, since the partition can be formed in a rectangular shape corresponding to a substantially rectangular shape formed by the inner surface of the flat bottom wall, the inner surfaces of the left and right side walls, and the outer surface of the flat ventilation duct, the structure is simplified. In addition, it is possible to ensure confidentiality with the inner surface of the container through the sealing material, and to suppress the leakage of heat between the front chamber and the rear chamber as much as possible. Since the position of the partition is no longer restricted, the volume of the front and rear chambers can be arbitrarily changed according to the cargo volume.

[0034] Further, since the width of the ventilation duct extends over the entire width of the ceiling wall, the height can be minimized even if a certain amount of ventilation is ensured. Therefore, between the ceiling wall inner surface and the cargo Considering that a cold air passage must be secured, there is no effect on the internal volume.

[0035] Further, in the refrigeration container of the present invention, when a heat insulating material is provided on the inner surface of the bottom wall of the ventilation duct, the cool air in the front chamber is guided to the rear chamber through the ventilation duct, and the relatively hot rear When the cool air in the chamber is guided to the front chamber, it is possible to reliably prevent condensation on the outer and inner surfaces of the ventilation duct due to the temperature difference between the cool air in the front chamber and the cool air in the rear chamber. Therefore, condensation water will not drip and wet the cargo.

[0036] In the refrigeration container of the present invention, the front duct side one end opening and the rear chamber side other end opening of the vent duct are opened from the closed position by the air pressure generated when the cold air fan is driven. When the shutters that operate to each other are provided so as to be rotatable, the shutters are usually in positions where the openings are closed, and air flow between the front chamber and the rear chamber is prevented via the ventilation duct. can do. In addition, since the length of the air duct is sufficiently long enough to be almost equal to the length of the container, air movement in the air duct can be suppressed, and heat movement accompanying air movement can be prevented.

[0037] Further, in the refrigerated container of the present invention, if air ribs are provided on both the front and back surfaces of the partition, a cold air passage can be secured between the partition and the cargo, and the cargo contacts the cut. Therefore, it is possible to prevent the heat of the partition from being transmitted directly to the cargo.

[0038] Alternatively, the refrigerated container of the present invention includes a container formed of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation, and a refrigeration unit provided on the outer surface of the front wall of the container. It is possible to move along the inner surface of the container, and through the partition which can be rotated between the storage position and the working position, the interior is separated from the front chamber on the front wall side and the rear chamber on the rear wall side. The front chamber is set to the low temperature side and the rear chamber is set to the high temperature side, and the front chamber is cooled by a refrigeration unit, while the cool air in the front chamber is guided to the rear chamber to cool the rear chamber. An electrical contact that detects that the partition is in the storage position is a refrigerated container, and when the finish is in the storage position, the front chamber is set to the freezing temperature and the rear chamber is refrigerated based on the detection signal of the electrical contact. Preventing two temperature zone control to control each temperature It is an feature.

[0039] According to the refrigeration container having such a configuration, cargo (frozen products) is loaded into the front chamber and partitioned. Is pulled down from the storage position and rotated to the work position, and moved to the partition position and fixed. Next, after cargo (refrigerated goods) is loaded into the rear chamber, the refrigeration unit is operated to cool the front chamber to the freezing temperature. In other words, the compressor of the refrigeration system is driven, and the air in the front chamber is exchanged in the evaporator to cool it to the refrigeration temperature. On the other hand, cool the front chamber to the rear chamber and cool the rear chamber to the refrigeration temperature.

[0040] Here, when the partition is fixed at the storage position, an electrical contact such as a limit switch is operating, and a detection signal is input to the control device of the refrigeration apparatus. In this state, even if the two temperature zone selection switch that controls the front chamber to the refrigeration temperature and the rear chamber to the refrigeration temperature is operated, the input of the two temperature zone selection switch is invalidated and the refrigeration temperature and the refrigeration temperature are set. It is controlled so that it cannot move to the stage.

[0041] However, because the entire container is frozen at the set temperature! / ヽ is refrigerated, if the 1 temperature zone selection switch is operated, the temperature is set based on the detection signal that the partition is in the storage position. You can move on to the next stage.

[0042] As a result, when the container is divided into a front chamber and a rear chamber and each chamber is controlled at a set temperature, the two-temperature zone control cannot be performed in a state where the partition is fixed at the storage position. It is possible to reliably prevent the refrigerated product from being cooled to the freezing temperature by mistake.

[0043] Further, in the refrigerated container of the present invention, when the partition is in the storage position, if a warning is issued based on the detection signal of the electrical contact, a notification that the partition is in the storage position may be given by a buzzer or a lamp. It is possible and preferable.

[0044] Alternatively, in the compressor cooling operation control device according to the present invention, each chamber in the container partitioned into the first chamber and the second chamber is different by an engine-driven generator-mounted refrigerator. By controlling the set temperature as a target, the container is a refrigerated container that can load cargoes with different storage temperatures, and the second air is introduced into the second chamber by introducing the cool air of the refrigerator installed in the first chamber. In the cold insulation operation control device provided with the control means for controlling the temperature of the chamber and controlling the temperature so as to be maintained by the heater provided in the second chamber when the temperature of the second chamber is too low. The control means controls to stop the other operation while operating either the compressor or the heater of the refrigerator. In this case, the compressor or the heater The priority for controlling the shift is set, and the control means controls either the compressor or the heater according to the priority.

[0045] According to the present invention having such a feature, the engine overload state can be avoided by stopping the operation of either the compressor or the heater of the refrigerator while the other is operating. Can do. Further, in the operation at this time, since the cold insulation operation control is performed according to the preset priority, it is possible to stably control both the first chamber and the second chamber according to the priority.

[0046] Here, the first chamber is a freezer, the second chamber is a refrigerator, and the freezing side temperature deviation, which is the difference between the temperature inside the freezer and the set temperature on the freezer side, is ΔΤ1, and the refrigerator is set to the set temperature. If the refrigeration side temperature deviation, which is the difference in internal temperature, is ΔΤ2, the priority is as follows:

Four patterns are possible.

[0047] Priority 1: The control means gives priority to temperature control of the freezer by controlling the compressor when 1 ° C <ΔΤ1.

Priority 2: When AT2 <−2 ° C., Δ 前記 Ο. 5 ° C., the controller operates the heater to give priority to temperature control of the refrigerator.

[0049] Priority 3: When the control means -2 ° C <AT2 <0 ° C and AT1 <0 ° C, the heater is operated to give priority to the temperature control of the refrigerator. To do.

[0050] Priority 4: When the control means 0 ° C <ΔΤ2 <0.5 ° C and ΔΤ1 <—0.5 ° C, the heater operates the heater to Prioritize temperature control.

[0051] That is, the priority is basically set so that the compressor or the heater is operated with priority given to the one deviating from the set temperature force. First, the refrigerator is prioritized, and then the heater of the refrigerator is set to operate while observing the temperature on the freezer side by the compressor.

[0052] By setting priorities in this way, the accuracy of the temperature control on the freezer side is stable within ± 1 ° C, and the accuracy of the temperature control on the refrigerator side is stable within the range of 2 ° C. Therefore, it is possible to control the cold operation.

The invention's effect

[0053] According to the refrigeration container of the present invention, the temperature inside the refrigerator storing the refrigerated product is lower than the refrigeration temperature. It is possible to reliably prevent overcooling with a simple structure.

[0054] Alternatively, according to the refrigerated container of the present invention, when the inside of the container is partitioned into a front chamber and a rear chamber having an arbitrary volume according to the cargo amount via a partition, It is possible to suppress the heat transfer between the refrigerated product and the rear chamber as much as possible.

[0055] Alternatively, according to the refrigerated container of the present invention, when the inside of the container is partitioned into a front chamber and a rear chamber having an arbitrary volume according to the cargo volume through a partition, heat leakage is minimized. It is possible to control the front chamber containing the frozen product to the freezing temperature and the rear chamber containing the refrigerated product to the refrigeration temperature.

[0056] Alternatively, according to the refrigeration container of the present invention, when the partition is in the storage position, the two-temperature zone control for controlling each room to the refrigeration temperature and the refrigeration temperature is prevented, and the refrigerated product is mistakenly frozen. Therefore, it is possible to reliably prevent cooling.

[0057] Alternatively, according to the refrigeration container cooling operation control apparatus according to the present invention, while one of the compressor or the heater of the refrigerator is in operation, the other operation is stopped to avoid an engine overload state. can do. Therefore, the capacity of the generator can be reduced to the minimum necessary, and can be optimized in terms of weight, cost, and fuel consumption. In this operation, since the cold insulation operation control is performed according to the preset priority, both the first chamber and the second chamber can be stably controlled according to the priority.

Brief Description of Drawings

FIG. 1 is a longitudinal sectional view showing a schematic structure of a refrigerated container according to a first embodiment of the present invention.

FIG. 2 is a plan view showing the rear end portion of the refrigeration container of FIG. 1 with a part thereof omitted.

FIG. 3 is a perspective view showing an example of soot.

FIG. 4 is a perspective view showing an example of a partition.

FIG. 5 is a cross-sectional view showing a shutter provided in a right air passage in the air duct.

FIG. 6 is a longitudinal sectional view of the mixing duct at a position corresponding to the cold air fan.

FIG. 7 is a longitudinal sectional view of the mixing duct at a position corresponding to the circulation fan.

[FIG. 8] FIG. 8 shows the floor surface laid together with the slider rails with a part omitted. It is a longitudinal cross-sectional view.

FIG. 9 is a longitudinal sectional view showing a schematic structure of a refrigerated container according to a modification of the first embodiment of the refrigerated container of the present invention.

FIG. 10 is a longitudinal sectional view showing a schematic structure of a refrigerated container according to a second embodiment of the present invention.

[FIG. 11] FIG. 11 is a cross-sectional view of the ventilation duct portion of the refrigeration container of FIG. 10 as viewed from above.

FIG. 12 is a cross-sectional view showing the opening / closing structure of the forward-side shirter member and the backward-side shirter member.

FIG. 13 is a functional block diagram of a control system that controls two temperature zones in a refrigerated container according to a second embodiment of the present invention.

[FIG. 14] FIG. 14 is a flowchart showing a process of normal cold insulation operation control on the freezer side. [FIG. 15] FIG. 15 is a flowchart showing a process of normal cold insulation operation control on the refrigerator side. [FIG. FIG. 16 is a flowchart showing a process of controlling the cold insulation operation based on priority. Explanation of symbols

1 Refrigerated container (first embodiment)

2 container

2A j room

2B rear room

3 Refrigeration unit

11A Sunoko body

11B Units

12 Guide rail

13 Partition

13a Seal material

13d air rib Ventilation duct

b Insulation

Shutter

Mixing duct

Cold air fan

Circulation fan

Suction duct

¾-air heater

Air passage

Heat exchanger

refrigerator

a fan

Temperature sensor

Lenore

0 Refrigeration container (Modification of the first embodiment) 3 Partition

0 Refrigeration container (second embodiment)

2 A Front room (freezer)

2B rear room (refrigerator)

4 Ventilation duct

7a Refrigerator storage

7b Circulation fan storage

8 Circulation fan

9 Norehead,

0 Electric heater (defrost heater)

2 Cooling fan compartment

4 Circulation fan storage

5 door 226 Norek head,

311 Outward side shatter material

312 Return side shatter material

33 opening

34 Shatter mounting plate

35 Fixture

36 Support shaft

51 Control unit

52 Temperature sensor

53 Heater drive

54 Fan drive

BEST MODE FOR CARRYING OUT THE INVENTION

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

[0061] <First embodiment>

FIG. 1 is a longitudinal sectional view showing a schematic structure of a refrigerated container 1 according to the first embodiment of the present invention. FIG. 2 is a plan view showing the refrigerated container 1 with a part of the rear end portion omitted.

[0062] The refrigerated container 1 includes a bottom wall 2a, a ceiling wall 2b, a left and right side wall 2c, a front wall 2d, and a left and right side wall 2c that are respectively provided with heat insulating materials and are pivotally supported so as to be opened and closed. 2 e and a refrigeration unit 3 provided on the outer surface of the front wall 2d of the container 2, and the inner space of the container 2 is divided into a front chamber 2A on the front wall 2d side by a partition 13 described later, The rear wall 2e is divided into a rear chamber 2B.

[0063] The bottom wall 2a of the container 2 is formed by sticking a heat insulating material to a flat stainless steel plate, and a gutter is installed on the upper surface thereof. Specifically, an aluminum slat body 11A is detachably installed along the front wall 2d and the rear wall 2e, and is located between the slat bodies 11A and 11A. Multiple unit saws 11B are detachably installed. A partition 13 is disposed between the slat body 11A and the unit slat 11B or between the adjacent unit slats 11B and 11B. As shown in Fig. 3, the saw body 11A and unit saw 11B are made by extrusion molding of aluminum. A plurality of vertical bars 111 formed by extrusion molding of aluminum and a plurality of plate members 112 arranged in parallel on the upper surface of the vertical bars 111 with a set interval therebetween.

[0064] Specifically, when the partition 13 is arranged between the front wall 2d side saw body 11A and the rear unit saw 11B to form the minimum volume front chamber 2A (maximum volume rear chamber 2B). A partition 13 is placed between the rear wall 2e side saw body 11A and the front unit saw 11B in front of the rear wall 2e (see Fig. 1 with a one-dot chain line state). ) (See the state of the two-dot chain line in Fig. 1), and between them, the partition 13 is placed between any adjacent unit saws 1 IB and 11B to form the front chamber 2A and the rear chamber 2B. The volume of the front chamber 2A and the rear chamber 2B can be changed according to the volume of frozen or refrigerated cargo.

Here, the partition 13 has a heat insulating property, and as shown in FIG. 4, is formed in a square shape substantially corresponding to the inner shape of the container 2 and can be folded in two via the hinge sheet 13e. It is. The partition 13 is provided with a sealing material 13a (see FIG. 1) around it, and is provided with a fixing belt 13b having mounting brackets 13c on one surface and a plurality of air ribs 13d on both surfaces. Are provided.

[0066] Therefore, after carrying the partition 13 into the container 2, the mounting bracket 13c is locked to the locking portion (not shown) of the lashing rail disposed on the inner surface of the side wall 2c of the container 2, and the fixing belt is fixed. By extending 13b, the length of the unit saw 11B between any adjacent saws, that is, between the rear end of the front wall 2d side saw body 11A and the rear end of the rear wall 2e side saw body 11A With this, the partition 13 can be fixed at an arbitrary position in the container 2.

[0067] At this time, the partition 13 has a sealing material 13a provided around the inner surface of the flat bottom wall 2a, the inner surfaces of the left and right side walls 2c, and the outer surface of the flat ventilation duct 14 provided on the ceiling wall 2b described later. Since they are in close contact with each other with almost no gap, leakage of heat between the front chamber 2A and the rear chamber 2B can be suppressed as much as possible. Also, since the cross-sectional area of the stainless steel plate of the bottom wall 2a is remarkably reduced as compared with the letter-shaped flooring, the amount of heat transfer is also greatly reduced. Moreover, the air passage 13d can secure an air passage between the cargo and the cargo, and it can be prevented that the cargo contacts the partition 13 and heat is directly transferred to the cargo. [0068] On the other hand, the inner surface of the ceiling wall 2b of the container 2 has a width substantially corresponding to the inner surface interval of the left and right side walls 2c, and is positioned near the front wall 2d and has one end opened to the front chamber 2A. A flat ventilation duct 14 having the other end opened to the rear chamber 2B at a fixed distance from the rear wall 2e is fixed. This ventilation duct 14 is divided into the right and left sides by a partition wall 14a (see Fig. 2) at the middle in the width direction. 14R is set to guide the cool air from the front chamber 2A to the rear chamber 2B, and the left air passage 14L is set to guide the cool air from the rear chamber 2B to the front chamber 2A! .

[0069] The heat insulating material 14b (see FIGS. 5 and 6) is attached to the inner surface of the bottom wall of the ventilation duct 14 in each of the left and right ventilation paths 14R and 14L. In this case, since the ventilation duct 14 has a width substantially corresponding to the inner surface distance between the left and right side walls 2c, the height can be minimized even if a sufficient ventilation amount is secured, and the volume inside the chamber is affected. Never give. That is, a gap for allowing cool air to pass between the inner surface of the ceiling wall 2b and the cargo is necessary, and the ventilation duct 14 can be placed in this gap.

[0070] Then, a shutter 15 is provided in each of the front wall 2d side opening and the rear wall 2e side opening of the right ventilation path 14R and the front wall 2d side opening and the rear wall 2e side opening of the left ventilation path 14L. It is provided in the rotation itself.

[0071] Here, each shutter 15 normally closes each opening by its own weight, prevents air flow between the front chamber 2A and the rear chamber 2B, and moves the air in the ventilation duct 14. Can be suppressed. On the other hand, when a cool air fan 17 to be described later is driven, each shutter 15 rotates against its own weight and can guide cool air from the front chamber 2A to the rear chamber 2B, and the rear chamber 2 B force is also applied to the front chamber. A relatively hot air can be led to 2A. For example, as shown in FIG. 5, when the cool air fan 17 is driven, the shutter 15 rotates against its own weight and opens the rear wall 2e side opening, so that the cool air in the front chamber 2A is moved to the right. It can be led to the rear chamber 2 B through the air passage 14R.

[0072] Further, the rear end portion of the ceiling wall 2b has a width substantially corresponding to the inner surface spacing of the left and right side walls 2c, and has a mixing chamber 16a inside and an opening communicating with the mixing chamber 16a in the front and rear A box-shaped mixing duct 16 is fixed, and one cooling fan 17 and a plurality of circulation fans 18 are disposed in the mixing chamber 16a of the mixing duct 16. And of the mixing duct 16, The other end of the suction duct 19 having one end connected to the rear wall 2e side opening of the right air passage 14R is connected to the front side opening communicating with the mixing chamber 16a provided with the cold air fan 17 ( (See Figure 6.) On the other hand, an electric heater 20 is provided in the front opening of the mixing duct 16 that communicates with the mixing chamber 16a in which the circulation fan 18 is provided, and the front opening is provided on the left side described above. The opening force on the rear wall 2e side of the air passage 14L is also opened to the rear chamber 2B at a certain distance (see FIGS. 2 and 7). Further, the opening on the rear side of the mixing duct 16 is formed so as to face only the mixing chamber 16a provided with the circulation fan 18, and the opening is formed on the inner surface of the rear wall 2e via the sealing material 16b. Is communicated with an air passage 21 extending in the vertical direction.

[0073] The mixing chamber 16a of the mixing duct 16 has a partition wall 161 (see FIG. 2) between the cool air fan 17 and the circulation fan 18 on the suction side where the cool air fan 17 and the circulation fan 18 are disposed. Are divided. Therefore, the cold air in the front chamber 2A can be guided only to the cold air fan 17 through the ventilation duct 14 and the suction duct 19.

[0074] Although not shown in detail, the refrigeration unit 3 is generated by a prime mover, for example, a diesel engine equipped with a fuel tank, a generator driven by a diesel engine, and the generator. It is composed of a refrigeration system that includes an electric compressor driven using electricity, so that the refrigeration capacity can be maintained for a set time even when there is no power source, such as rail transport, ship transport, and trailer transport. Designed.

[0075] In addition, a heat exchange for exchanging heat with the evaporator of the refrigeration apparatus is provided at the front end of the ceiling wall 2b (above the inner surface of the front wall 2d), and the cold air exchanged by this heat exchange is supplied to the front chamber. There is a fan 23a that feeds to 2Α. An air passage 21 extending in the vertical direction is provided on the inner surface of the front wall 2d in order to guide the cool air supplied by the fan 23a downward.

Note that the refrigeration unit 3 is controlled by a control device (not shown), and the above-described cold air fan 17, circulation fan 18, electric heater 20, and fan 23a are connected to the control device and wiring. Connected and ONZOFF controlled via the controller.

Next, the operation of the refrigerated container 1 configured as described above will be described.

[0078] First, in the pickup area, the sword body 11A is installed along the front wall 2d, and the After installing the appropriate number of unit saws 1 IB against the rear end of the main body 11A, the cargo (frozen product) is placed on the main body 11A and the unit saw 11B using transport equipment such as a forklift. And load it. After loading the frozen products, install the partition 13, partition the container 2 into the front chamber 2A and the rear chamber 2B, then install the remaining unit saw 11B on the bottom wall 2a that becomes the rear chamber 2B. Install the slat body 11A along the rear wall 2e. Similarly, load the cargo (refrigerated goods) on the unit slag 11B and the slat body 11A using transport equipment such as forklifts, and use the rear wall 2e. Close.

[0079] Thereafter, the refrigerated container 1 is transported to the delivery location. Specifically, trucks can be transported directly to a delivery location using a trailer, or transported to a cargo station using a trailer, transported by rail to the target cargo station, and then transported again from the cargo station to the delivery location. Or, using a trailer, transport to the port, ship to the target port, and then track again from the port to the delivery location.

[0080] When the refrigerated container 1 is transported to such a place where the cargo is collected, a two-temperature zone selection switch (not shown) for controlling the front chamber 2A to the refrigeration temperature and the rear chamber 2B to the refrigeration temperature, respectively. To operate the refrigeration unit 3.

That is, when the diesel engine is driven by turning on the two temperature zone selection switch, the generator is driven, and the electric compressor of the refrigeration apparatus is driven by the electricity generated by the generator. When the electric compressor is driven, the refrigerant is compressed and supplied to the condenser, and cooled by the condenser to become a high-pressure liquid. After that, when the liquefied refrigerant is blown out to the evaporator through the expansion valve, the liquefied refrigerant is vaporized, and the vaporization heat is taken away from the surrounding force of the evaporator to cool. The refrigerant that has become gas is sucked into the electric compressor, and the refrigeration cycle is performed again.

Here, the air in the front chamber 2A is sucked by the fan 23a, cooled by heat exchange in the heat exchanger 22, and then supplied to the main body 11A through the air passage 21 provided in the front wall 2d. Blows upward from the main body 11A and the unit 11B. In this way, the air in the front chamber 2A is circulated, and the interior of the front chamber 2A is controlled to maintain a set temperature, for example, 20 ° C.

[0083] On the other hand, in the rear chamber 2B, the circulation fan 18 is driven. Air is sucked into the circulation fan 18 and supplied to the saw body 11A through the air passage 21 provided on the rear wall 2e, and blown upward from the saw body 11A and the unit saw 11B. In this manner, the air in the rear chamber 2B is circulated, and the interior of the rear chamber 2B is controlled to maintain a set temperature, for example, 15 ° C.

[0084] In this way, in the front chamber 2A and the rear chamber 2B, the cool air is blown down and the upper suction method is used, so that the internal temperature distribution becomes uniform as compared with the upper blow method.

[0085] By the way, when the temperature inside the rear chamber 2B detected by the temperature sensor 24 (see Fig. 7) exceeds the set temperature, the cool air fan 17 is driven and the right side through the suction duct 19 is driven. A suction force is applied to the shutter 15 provided on the rear wall 2e side opening of the air passage 14R. Therefore, the shutter 15 provided in the opening on the rear wall 2e side of the right ventilation path 14R and the shutter 15 provided in the opening on the front wall 2d side are rotated against their own weights. Therefore, the cold air in the front chamber 2A is sucked into the mixing dust 16 through the air passage 14R on the right side of the ventilation duct 14 and the suction duct 19, and the cooling fan 17 side mixing chamber 16a and the circulation fan 18 side mixing chamber 16a and The air is supplied to the saw body 11A through the air passage 21 provided in the rear wall 2e, and is blown upward from the saw body 11A and the unit saw 11B.

At this time, since the air in the rear chamber 2B is circulated by the circulation fan 18, in the mixing chamber 16a of the mixing duct 16, the cold air in the front chamber 2A sucked into the mixing duct 16 and the rear chamber 2B It is mixed with cold air and gradually cooled.

[0087] When the cold air in the front chamber 2A passes through the right air passage 14R of the ventilation duct 14, the internal temperature of the rear chamber 2B is relatively higher than the cold air in the front chamber 2A. Force to condense on the outer surface of the air duct 14 Since the heat insulating material 14b is adhered to the inner surface of the bottom wall of the air duct 14, the occurrence of condensation is prevented. For this reason, condensed water does not drip and wet the cargo.

[0088] Further, since the cool air in the front chamber 2A is supplied to the rear chamber 2B by the cool air fan 17, a positive pressure is generated in the rear chamber 2B. For this reason, the shutter 15 of the left vent passage 14L is rotated against its own weight, and the air in the rear chamber 2B is supplied to the front chamber 2A via the left vent passage 14L. In other words, the air supplied from the front chamber 2A to the rear chamber 2B is returned to the rear chamber 2B force front chamber 2A by that capacity, and is always in an equilibrium state. [0089] In this case, since the opening on the front wall 2d side of the left air passage 14L of the ventilation duct 14 is opened in the vicinity of the front wall 2d, the cold air in the rear chamber 2B returned to the front chamber 2A is immediately It is sucked by the fan 23a and cooled by heat exchange ^^ 22. Therefore, the relatively high-temperature cold air returned from the rear chamber 2B to the front chamber 2A is prevented from coming into contact with the cargo (frozen product) in the front chamber 2A, and the quality of the cargo is not deteriorated.

[0090] When the relatively hot air in the rear chamber 2B passes through the left air passage 14L of the ventilation duct 14, the internal temperature of the front chamber 2A is relatively lower than the cold air in the rear chamber 2B. Therefore, the force to condense on the inner surface of the air duct 14 The heat insulating material 14b is adhered to the inner surface of the bottom wall of the air duct 14, thereby preventing condensation. For this reason, the condensed water does not drip forces such as the opening end of the front chamber 2A side of the ventilation duct 14 or the joint of the duct and wet the cargo.

In this way, when the air in the rear chamber 2B is cooled and reaches the set temperature, the temperature sensor 24 detects the temperature and stops the driving of the cool air fan 17.

[0092] On the other hand, when the cool air of the front chamber 2A is introduced into the rear chamber 2B, or due to the heat leakage from the rear chamber 2B to the front chamber 2A, the temperature of the rear chamber 2B is excessively lower than the set temperature. In the cooling state, when the cool air fan 17 is operating, the drive of the cool air fan 17 is stopped and the electric heater 20 is activated to circulate the air in the rear chamber 2B through the circulation fan 18. During the heating, the sucked air is heated by the electric heater 20. When the air in the rear chamber 2B is heated and reaches the set temperature, the operation of the electric heater 20 is stopped.

[0093] Thus, when the temperature of the rear chamber 2B exceeds the set temperature, the cool air fan 17 is driven, the cool air of the front chamber 2A is guided to the rear chamber 2B, and the inside is cooled, When the temperature of the rear chamber 2B falls below the set temperature, the electric heater 20 is operated to heat and circulate the air in the rear chamber 2B so that the internal temperature of the rear chamber 2B is maintained at the set temperature. Easy to control. As compared with the case where engine cooling water or high-temperature refrigerant is introduced to the rear chamber 2B via piping, it is easy to install the electric wiring between the refrigeration unit 3 and the rear chamber 2B. In addition, it is possible to reduce the degree of occurrence of problems that do not require consideration of leakage of cooling water or refrigerant.

In the first embodiment, the bottom wall 2a is formed on a flat surface and the swords 11A and 11B are laid, and then the cargo is loaded using a transportation device. It is assumed that transportation equipment such as clift cannot be used. In this case, the cargo can be loaded and unloaded using a commercially available slider, that is, a slider that can be moved back and forth via a roller, and the load receiving surface is configured to move up and down. Corresponding to the use of such a slider, the bottom wall 2a of the container 2 has a width that allows the slider to travel as shown in FIG. A plurality of rails 25 projecting upward from the upper surface of the container and having a depth that the load receiving surface immerses below the upper surface of the slats 11A and 11B during storage. It can be laid from the front wall 2d to the rear wall 2e.

[0095] In this case, a rubber plate or the like is suspended from the lower end surface of the partition 13 as the sealing material 13a, and the sealing material 13a is formed in a shape corresponding to the vertical cross-sectional shape of the floor surface including the rail 25. As with the bottom wall 2a, the front chamber 2A and the rear chamber 2B can be sealed with almost no gap, and the rear chamber 2B force can also minimize heat leakage to the front chamber 2A.

FIG. 9 is a longitudinal sectional view showing a schematic structure of a refrigerated container 100 according to a modification of the first embodiment of the present invention. The same constituent elements as those in the first embodiment described above are denoted by the same reference numerals, and the following description will mainly be made on differences.

[0097] At the upper part of the left and right side walls 2c of the refrigeration container 100, guide rails 12 having a substantially C-shaped cross section are located below a ventilation duct 14 provided on a ceiling wall 2b described later so that the openings face each other. Is fixed. Although not shown in detail, each guide rail 12 is fitted with a traveling body in which rollers are rotatably supported on the front and rear sides, and a partition 113 is provided on the left and right traveling bodies through hinges to the rear. It is connected to turn freely!

[0098] Further, a knock (not shown) is provided at the lower end of the partition 113 so that it can be engaged with and disengaged from a hook (not shown) provided at the rear end of the ventilation duct 14. Yes.

Accordingly, by grasping a handle (not shown) and pushing in or pulling out the partition 113, the partition 113 can be moved along the guide rail 12 to any position in the front-rear direction. . At an arbitrary position, the mounting bracket 13c is locked to the locking portion (not shown) of the lashing rail disposed on the inner surface of the side wall 2c of the container 2, and the fixing belt 13 By stretching b, the length of the unit saw 11B between any adjacent saws, that is, between the rear end of the front wall 2d side saw body 1 1 A and the front wall 2e side saw body 11 A The partition 113 can be fixed at an arbitrary position in the container 2 at intervals.

[0100] When loading or unloading cargo, the partition 113 is flipped up, and the knock is engaged with the hook provided in the ventilation duct 14, so that the storage position along the ventilation duct 14 is reached. Can be held. A limit switch (not shown) that operates when the partition 113 is in the retracted position is provided in the ventilation duct 14.

[0101] This limit switch detection signal, main switch (not shown), one temperature zone selection switch for controlling the entire container 2 to the freezing temperature or refrigeration temperature, the front chamber 2A to the freezing temperature, An operation signal of a two temperature zone selection switch for controlling the rear chamber 2B to the refrigeration temperature is input to the control device.

Next, the operation of the refrigeration container 100 configured as described above will be described.

[0103] First, in the pick-up area, the sword body 11A is installed along the front wall 2d, and after the appropriate number of unit swords 11B are installed in contact with the rear end of the sword body 11A, the Cargo (frozen goods) is loaded onto the main body 11A and the unit saw 11B using transport equipment such as a forklift. When the loading of the frozen product is completed, the partition 113 is lowered to the stored state force working state, and moved and fixed along the rear end of the unit saw 11B, so that the inside of the container 2 is moved to the front chamber 2A and the rear chamber 2A. Divide into room 2B. After that, install the remaining unit saw 11B on the bottom wall 2a, which becomes the rear chamber 2B, and install the saw body 11A along the rear wall 2e. Similarly, the cargo is placed on the unit saw 11B and the saw body 11A. (Refrigerated products) are loaded using transport equipment such as forklifts, and the rear wall 2e is closed.

[0104] After that, the force for transporting the refrigerated container 100 to the delivery place In that case, the main switch is turned on, the two temperature zone selection switch is turned on, and the refrigeration temperature and the temperature are passed through the display panel (not shown). Set the refrigeration temperature and operate the refrigeration unit 3.

By the way, when the partition 113 is fixed at the storage position, the limit switch is operating, and the detection signal of the limit switch is input to the control device of the refrigeration unit 3. When the main switch is turned on in this state and the two temperature zone selection switch is turned on, an abnormality is displayed on the operation panel and an alarm is issued. It is controlled so that it cannot move to the stage where the degree is set. Therefore, it is possible to grasp that the partition 113 is in the storage position, and it is not possible to control the two temperature zones, so that it is possible to reliably avoid cooling the refrigerated product to the freezing temperature.

[0106] Note that in order to freeze or refrigerate the entire container 2 at the set temperature, when one temperature zone selection switch is operated, the temperature is determined based on the detection signal of the limit switch that detects that the partition 113 is in the storage position. You can move on to the next stage of setting.

[0107] As a result, when the container 2 is divided into the front chamber 2A and the rear chamber 2B and each chamber is controlled at the set temperature, the two-temperature zone control is performed in a state where the partition 113 is fixed at the storage position. Thus, it is possible to reliably prevent the refrigerated product from being cooled to the freezing temperature by mistake.

Explanation of structure of refrigeration container 200

FIG. 10 is a schematic longitudinal sectional view showing a schematic structure of the refrigerated container 200 according to the second embodiment of the present invention. FIG. 11 is a cross-sectional view of the ventilation duct portion when the refrigeration container 200 is viewed from above. In addition, the arrow in a figure has shown the flow direction of cold air. In addition, the same constituent elements as those in the above-described embodiments are denoted by the same reference numerals, and the following description will be mainly made on differences.

That is, the refrigerated container 200 of the second embodiment is partitioned into a front chamber 202A and a rear chamber 202B by a partition 13 having a heat insulating property that allows the inside of the container to move back and forth. In addition, the ceiling portion inside the container has a double structure of a ceiling wall 202b corresponding to the outer wall and a ceiling inner wall 202bl. The space between the ceiling wall 202b and the ceiling inner wall 202bl is the ventilation duct 214. Become! / Speak.

[0110] As shown in Fig. 11, the ventilation duct 214 is divided into left and right parts along the longitudinal direction of the container body, and one side (upper side in Fig. 11) is located behind the front chamber 202A side. The forward side air passage 214R for sending cold air toward the chamber 202B side, and the other side (the lower side in FIG. 11) is a rear side air passage for returning the cold air toward the front chamber 202A. The air passage is 214L.

[0111] Outward side shatter member 311 and return side shatter member 312 are provided at the end of the front chamber 202A side of the forward passage side air passage 214R and the return side air passage 214L, respectively. By opening and closing the roadside shatter member 311 and the returnside shatter member 312 (this will be described later with reference to FIG. 12), the forward side airflow path 214R and the return side airflow path 214L communicate with the inside of the front chamber 202A. It becomes like this.

[0112] Further, in the front upper portion of the front chamber 202A, a refrigerator storage unit 217a for storing the refrigerator 23, and a circulation fan storage unit 217b for storing three circulation fans 218, 218, 218 Is provided. In the refrigerator storage unit 217a, an electric heater 220 is provided in the vicinity of the fan 23a of the refrigerator 23. The electric heater 220 is basically a defrost heater for removing frost and the like attached to the heat exchanger.

[0113] Further, on the front wall of the front chamber 202A, there is provided a Balta head 219 for allowing the cool air from the refrigerator 23 to flow downward, and the upper portion of the Balta head 219 is a refrigerator housing portion 217a and The circulation fan storage part 217b is opened, and the lower part of the Balta head 219 is opened inside the front chamber 202A. That is, the front chamber 202A has a lower blowing structure that blows out cold air with lower force.

[0114] On the other hand, in the upper rear side of the rear chamber 202B, a cool air fan housing unit 222 that houses one cold air fan 17 for sucking the cool air of the front chamber 202A, and cool air is circulated in the rear chamber 202B. For this purpose, a circulation fan storage unit 224 that stores three circulation fans 18, 18, and 18 is provided in communication. Further, the cool air fan storage portion 222 and the rear end portion of the outward passage side air passage 214R are provided so as to be opened and closed by the outward passage shirter member 311. On the other hand, the rear end portion of the return-side air passage 214L is open to both the inside of the rear chamber 202B and the circulation fan storage portion 224, and is provided so as to be opened and closed by the return-side shirter member 312.

[0115] Further, the inner wall of the door 225 constituting the rear wall of the rear chamber 202B is provided with a Balta head 226 for allowing cool air to flow downward, and the upper portion of the Balta head 226 has a cool air fan housing portion 222 and The circulation fan storage unit 224 opens, and the lower part of the butter head 226 opens into the rear chamber 202B. That is, the rear chamber 202B has a lower blowing structure that blows out cool air from below, like the front chamber 202A. In addition, the circulation fan storage section 224 is provided with an electric heater 20 facing the circulation fans 18, 18, and 18.

That is, in the refrigeration container according to the second embodiment, the front chamber 202A of the refrigerator 23 has a fan 23a in a state where the forward-side shirter member 311 and the backward-side shirter member 312 are closed. Rotating and circulating fans 218, 218, and 218 rotate to circulate cold air by blowing downward, and the rear chamber 202B circulates cold air by rotating downward and circulating fans 18, 18, and 18, respectively. On the other hand, when the forward-side shirter member 311 and the backward-side shirter member 312 are opened by the rotation of the cold air fan 17, the cold air blown out from the refrigerator 23 as shown by arrows in FIGS. After passing through the front chamber 202A and passing through the front chamber 202A, it circulates in the front chamber 202A, and then the front chamber 202A side force is also sent to the rear chamber 202B through the upper outbound air passage 214R (in FIG. (Shown by the arrow), passes through the cool air fan housing 222 on the rear chamber 202B side, passes through the circulation fan housing 224, passes through the Balta head 226, and blows from the lower side of the rear chamber 202B to circulate in the rear chamber 202B. To do. The circulated cold air is sucked into the circulation fans 18, 18 and 18 and drawn into the circulation fan storage 224, and the lower force of the rear chamber 202 B is blown out again through the Balta head 226. At this time, a part of the cool air in the rear chamber 202B, which has become slightly high pressure due to being sucked in from the front chamber 202A, is drawn into the circulation fan storage section 224 and again passes through the return-side air passage 214L. This is returned to the front chamber 202A side (indicated by a solid arrow in FIG. 10).

FIG. 12 shows the open / close structure of the forward path side shirter member 311 and the return path side shirter member 312. The forward-side shirter member 311 and the backward-side shirter member 312 have the same structure except that their arrangement directions are reversed to the right and left! /, So here, the backward-side shirter member 312 will be described as an example.

[0118] The return path side shatter member 312 is arranged in the same direction (the direction shown in FIG. 12) at both ends of the forward path side air path 214L. That is, the upper end portion 34a and the lower end portion 34b of the shirter mounting plate 34 having the opening 33 through which the cold air passes are fixed to the ceiling wall 202b and the ceiling inner wall 202bl by fixing tools (bolts and nuts in the figure) 35, respectively. A return-side shirter member 312 is attached to the shirter mounting plate 34 so as to close the opening 33. The return path side shatter member 312 is rotatably attached at its upper end by a support shaft 36. The shirter mounting plate 34 is provided to be inclined by an angle Θ (for example, 15 degrees) with respect to the vertical direction. Since the shirter mounting plate 34 is provided in an inclined manner in this way, the return side shirter member 312 acts to always close the opening 33 by its own weight. Then, in the forward side air passage 214L, the white line in FIG. When the cold air flows in the direction indicated by the arrow, the return-side shirter member 312 is rotated as indicated by the two-dot chain line in FIG. 12 to open the opening 33 due to the pressing action of the cold air. When the flow of cold air disappears, the return-side shirter member 312 rotates by its own weight, and the opening 33 is closed again.

[0119] The forward-side shirter member 311 has the arrangement relationship shown in Fig. 12 when the refrigerated container shown in Fig. 11 is viewed from the direction of arrow A in the figure.

[0120] The material of the return side shatter member 312 and the forward side shatter member 311 having such a configuration is preferably a relatively light material that can be easily rotated by the flow of cold air. For example, polyethylene (PE ) Or polypropylene (PP) or the like molded resin is preferably used.

[0121] Explanation of cold storage control according to the present invention

As described above, the refrigeration container according to the second embodiment has different storage temperatures by controlling the respective chambers of the front chamber 202A and the rear chamber 202B with different set temperatures as targets (two temperature zone control). Cargo can be mixed. In this second embodiment, the front chamber 202A is a freezer for storing frozen storage items that must be transported in a frozen state such as frozen meat and frozen seafood, and the rear chamber 202B is used for fresh vegetables, soft drinks, etc. It is used as a refrigerator for storing refrigerated items that must be transported in a refrigerated state.

[0122] Further, the set temperature of the front chamber (hereinafter referred to as "freezer") 202A is set lower than the set temperature of the rear chamber (hereinafter referred to as "refrigerator") 202B, and, as described above, By introducing the cold air from the freezer 202A to the refrigerator 202B through the forward air passage 214R, the temperature of the refrigerator 202B is controlled, and when the temperature of the refrigerator 202B is too low, the temperature is maintained by the electric heater 20. To control.

[0123] Here, the case where the temperature of the refrigerator 202B is too low can be considered as follows. That is, the internal temperature of the freezer 202A is controlled to about 20 ° C to 30 ° C, and the internal temperature of the refrigerator (chilled) 13 is controlled around + 5 ° C. Even if the cold air on the 02A side is not supplied to the refrigerator 202B side through the forward-side air passage 214R, the cold heat on the freezer 202A side is transmitted to the refrigerator 202B side through the partition 13, and is set by cooling the inside of the refrigerator 202B May fall too low from temperature. For example, When goods are transported from Osaka to Hokkaido in winter, the inside of the refrigerator 202B may be cooled by the outside air temperature in Hokkaido and may be too low from the set temperature. In such a case, it is necessary to control the electric heater 20 so as to warm the interior and maintain the interior at a set temperature (such as + 5 ° C). In addition, there may be a case where the freezer 202A side needs to be controlled so that the interior is warmed by the electric heater 220 and the interior is maintained at a set temperature (120 ° C. to 30 ° C.).

As described above, in the control in the two temperature zones, it may be necessary to simultaneously operate the compressor of the refrigerator 23 and mainly the electric heater 20 of the refrigerator 202B. However, as described above, when the compressor of the refrigerator 23 and the electric heater 20 of the refrigerator 202B are operated simultaneously, a problem occurs that the generator is overloaded. Therefore, in the second embodiment, the control unit is configured to stop the operation of one of the compressor and the electric heater 20 of the refrigerator while the other is in operation. In this case, a priority for preferentially controlling the displacement of the compressor or the electric heater 20 is set in advance, and the configuration of controlling the displacement of the compressor or the electric heater 20 according to this priority! / RU

FIG. 13 is a functional block diagram showing a schematic configuration of a control system that controls two temperature zones in the refrigerated container 200 having the above configuration.

That is, a plurality of temperature sensors 52 (not shown in FIGS. 10 to 12) provided at appropriate locations in the freezer 202A and the refrigerator 202B are provided to the control unit 51 that controls the two temperature zones in general. Not connected). The control unit 51 is connected to the heater drive unit 53 that drives each electric heater 20, 220 to ONZOFF, and is connected to the fan drive unit 54 that controls the cold air fan 17, the circulation fan 18, and the circulation fan 218. ing. In addition, the control unit 51 is configured to drive and control the compressor of the refrigerator 23. The control unit 51 is a force that is not shown in the figure CPU that performs various arithmetic processing, ROM that stores temperature control programs in two temperature zones, RAM that stores various detected temperature data, and RAM that functions as a work area during temperature control Etc.

[0127] Hereinafter, specific examples of normal cold storage operation control on the freezer side and normal cold storage operation control on the refrigerator side will be described, and finally, the cold storage operation control based on the priority according to the present invention will be described. [0128] (1) Normal cold storage control on the freezer side

FIG. 14 is a flowchart showing processing of normal cold storage operation control on the freezer side. Hereinafter, the cooling operation control process will be described with reference to the flowchart shown in FIG. Here, the set temperature of the freezer 202A is, for example, 25 ° C, and the accuracy of the internal temperature control of the freezer 202A is + 1 ° C to -2 ° C. In addition, the freezing side temperature deviation which is the difference between the temperature inside the freezer 202A and the set temperature is ΔΤ1. Circulation fan 218 is assumed to be operating at all times.

[0129] The control unit 51 detects the internal temperature by a temperature sensor 52 provided at a predetermined location (not shown) of the freezer 202A, and the freezing side temperature deviation which is the difference between the detected temperature and the set temperature of the freezer 202A. It is determined whether ΔΤ1 exceeds the control accuracy of + 1 ° C (step Sl l). As a result, when ΔΤ1 exceeds + 1 ° C (when it is determined Yes in step S11), the compressor is turned on and the operation is started (step S12). On the other hand, after starting the compressor, it is determined whether or not ΔΤ1 has become −1 ° C or less (step S13). As a result, when ΔΤ1 is −1 ° C or less (when determined to be Yes at step S13), the compressor is turned off (step S14).

[0130] Control unit 51 basically repeats the above-described processing (the processing from step S11 to step S14) to change the internal temperature of freezer 202A to the set temperature—from 25 ° C to ± 1 ° C. Control to be within the range of.

[0131] On the other hand, in such ONZOFF control of the compressor, the control unit 51 constantly monitors whether or not the force ΔΔ1 is −2 ° C. or lower (step S15). As described above, this takes into account other factors that cannot be controlled only by ONZOFF of the compressor (for example, the influence of the outside air temperature described above)!

[0132] Then, when ΔΤ1 is −2 ° C or lower (when it is determined Yes in step S15), it is determined that the inside of the freezer 202A is too cold, and the electric heater (defrost heater) 220 is turned on. Set to ON (step S16). When the internal temperature reaches the set temperature, that is, ΔΤ1 force SO (Yes in Step S17), the electric heater (defrost heater) 220 is turned off (Step S18), and Step S11 is entered. Return.

[0133] (2) Explanation of normal cool operation control on the refrigerator side FIG. 15 is a flowchart showing a process of normal cold insulation operation control on the refrigerator side. Hereinafter, the cooling operation control process will be described with reference to the flowchart shown in FIG. Here, the set temperature of the refrigerator 202B is, for example, + 5 ° C, and the accuracy of the internal temperature control of the refrigerator 202B is ± 2 ° C. In addition, the refrigeration side temperature deviation, which is the difference in the internal temperature with respect to the set temperature of the refrigerator 202B, is ΔΤ2. It is assumed that the circulation fan 18 is always in operation.

[0134] The control unit 51 detects the internal temperature by a temperature sensor 52 provided at a predetermined location (not shown) of the refrigerator 202B, and the refrigeration side temperature deviation which is the difference between the detected temperature and the set temperature of the refrigerator 202B. It is determined whether ΔT2 exceeds the control accuracy of + 1 ° C or not (step S21). As a result, when ΔΤ2 exceeds + 1 ° C (when it is determined Yes in step S21), the cool air fan 17 is turned on and the operation is started (step S22). On the other hand, after the operation of the cooling fan 17 is started, it is determined whether or not Δ に 2 has become −0.5 ° C. or less (step S23). As a result, when ΔΤ2 force—0.5 ° C. or less (when determined to be Yes at step S23), the cool air fan 17 is turned off (step S24).

[0135] Control unit 51 basically repeats the above process (the process from step S21 to step S24) to change the internal temperature of refrigerator 202B from the set temperature of + 5 ° C to + 1 ° C. Control to be within the range of ~ 1. 5 ° C.

[0136] On the other hand, in such ONZOFF control of the cold air fan 17, the control unit 51 performs ΔΤ2 force S

— The power is constantly monitored whether it is below 1 ° C (step S25). As described above, this takes into consideration other factors that cannot be controlled only by ONZOFF of the cold air fan 17 (for example, the influence of cold heat conducted from the freezer 202A to the partition 13 or the outside air temperature).

[0137] Then, when ΔΤ2 is less than -1 ° C (when it is determined Yes in step S25), it is determined that the refrigerator 202B is too cold, and the electric heater 20 is turned on ( Step S26). Then, when ΔΤ2 force exceeds 5 ° C (Yes is determined in Step S27), the electric heater 20 is turned off (Step S28), and the process returns to Step S21.

[0138] (3) Explanation of cool operation control by priority

In the second embodiment, basically, the normal cold storage operation control on the freezer side and the normal cold storage operation control on the refrigerator side are individually performed, and at that time, the compressor and electric heater are controlled. When the operation of the motor 20 overlaps, the cooling operation control based on the priority described below is performed in preference to the above-described cooling operation control.

[0139] FIG. 16 is a flowchart showing a process of controlling the cold insulation operation based on the priority. Hereinafter, the cooling operation control process based on the priority will be described with reference to the flowchart shown in FIG.

[0140] In the cold insulation operation control process based on the priority, the control unit 51 first preferentially determines whether or not the refrigeration side temperature deviation ΔΤ1 exceeds + 1 ° C (step S31). As a result, when ΔΤ1 exceeds + 1 ° C (when it is determined Yes in step S31), priority is given to the cold storage operation control of the freezer 202A (step S38). That is, priority is given to the processing shown in FIG. That is, even when the electric heater 20 is turned on on the refrigerator 202B side, the electric heater is not turned on, and the control on the freezer 202A side is given priority.

[0141] On the other hand, if ΔΤ1 is + 1 ° C or lower (if determined to be No in step S31), then whether or not ΔΤ2 that is the refrigeration side temperature deviation is −2 ° C or lower is determined. Is determined (step S32). As a result, if ΔΤ2 is −2 ° C or less (if Yes in step S32), then it is determined whether Δ 判断 1 is a force that is less than + 0.5 ° C (step S32). S33). If ΔΤ1 exceeds + 0.5 ° C (when it is determined No in step S33), the process proceeds to step S38, and the cooling operation control of the freezer 202A is prioritized. That is, even if the refrigerator 202B side is somewhat too cold, the electric heater 20 is not turned on and the control on the freezer 202A side is given priority.

[0142] On the other hand, if ΔΤ1 is + 0.5 ° C or lower (if determined to be Yes in step S33), the process proceeds to step S39, and step S26 in FIG. Priority is given to the processing in step S27. That is, when the compressor is in operation, the compressor is turned off and the processing in steps S26 and S27 is prioritized. Then, it is always monitored whether the judgment in Step S27 is Yes and the electric heater 20 is turned off in Step S28 (Step S40), and whether or not ΔT1 exceeds + 1 ° C is always checked. Monitor (Step S41) and if the electric heater is not turned off and ΔΤ1 does not exceed + 1 ° C (No in Step S40, No in Step S41), return to Step S39, 1 Repeat steps S26 and S27 shown in 5. On the other hand, if the electric heater is turned off or ΔΤ1 exceeds + 1 ° C (Yes in step S40, or step S41 If yes, the process proceeds to step S38, and priority is given to the cold storage control of the freezer 202A.

On the other hand, if ΔΤ2 is not −2 ° C or less in Step S32 (if No in Step S32), then ΔΤ2 is within the range of −2 ° C to 0 ° C. It is determined whether or not (step S34). As a result, if ΔΤ2 is within the range of −2 ° C to 0 ° C (if determined to be Yes in step S34), then it is determined whether ΔΤ1 is less than 0 ° C or not. Judge (Step S35). As a result, if ΔΤ1 is not 0 ° C. or lower (if determined to be No in step S35), the process proceeds to step S38, and priority is given to the cold storage operation control of the freezer 202A. On the other hand, if ΔΤ1 is 0 ° C or lower (if determined to be Yes in step S35), the process proceeds to step S39, and priority is given to the processing in step S26 and step S27 in FIG. And do it. That is, when the compressor is in operation, the compressor is turned off and the processing in steps S26 and S27 is prioritized. If the electric heater is not turned off and ΔΤ1 does not exceed + 1 ° C (No in Step S40, No in Step S41), the process returns to Step S39, and Step S26 shown in FIG. , Repeat step S27. On the other hand, if the electric heater is turned off or ΔΤ1 exceeds + 1 ° C (Yes in Step S40 or Yes in Step S41), the process proceeds to Step S38 and the refrigerator 202A is kept cool. Prioritize operation control.

On the other hand, if ΔΤ2 is not within the range of −2 ° C to 0 ° C in Step S34 (if determined to be No in Step S34), then ΔΤ2 force 0 ° C to + It is determined whether the temperature is within a range of 0.5 ° C (step S36). As a result, if the ΔΤ2 force is within the range of 0 ° C to + 0.5 ° C (if determined as Yes in step S36), then whether ΔΤ1 is less than or equal to -0.5 ° C. Judge whether or not. As a result, when ΔΤ1 is not −0.5 ° C. or less (when it is determined No in step S37), the process proceeds to step S38, and the cooling operation control of the freezer 202A is prioritized. On the other hand, if ΔΤ1 is −0.5 ° C or lower (if determined to be Yes in step S37), the process proceeds to step S39, and the processing in steps S26 and S27 in FIG. Is given priority. That is, when the compressor is in operation, the compressor is turned off, and the processing in steps S26 and S27 is prioritized. If the electric heater is not turned off and ΔΤ1 does not exceed + 1 ° C (step S4 If 0 is determined to be No and Step S41 is determined to be No), the process returns to Step S39 and repeats Steps S26 and S27 shown in FIG. On the other hand, if the power to turn off the electric heater or ΔΤ1 exceeds + 1 ° C (Yes in Step S40 or Yes in Step S41), the process proceeds to Step S38 and the refrigerator 202A is cooled. Prioritize operation control.

[0145] On the other hand, if Δ 内 2 is not within the range of 0 ° C to + 0.5 ° C in Step S36 (if determined No in Step S36), the process returns to Step S31.

[0146] The present invention can be implemented in various other forms without departing from the spirit or main characteristic power thereof. For this reason, the above-described embodiment is merely an example in all respects, and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

[0147] This application was filed in Japan on August 20, 2004, Japanese Patent Application No. 2004-241508, Japanese Patent Application No. 2004-241509, Japanese Patent Application No. 2004-241510, Japanese Patent Application No. 2004-241511, and Japanese Patent Application No. 2004. -Request priority under 241512. The contents of which are hereby incorporated by reference into this application. In addition, all references cited in this specification are specifically incorporated by reference.

Industrial applicability

[0148] As described above, according to the present invention, when a frozen product and a refrigerated product are mixed using a refrigerated container to improve the transportation efficiency, the inside of each cabinet is subjected to two temperatures corresponding to the frozen product and the refrigerated product. The belt can be reliably controlled over a long period of time, and the cargo can be transported from the shipper to the shipper without losing quality.

Claims

The scope of the claims

[1] The container consists of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation properties, and a refrigeration unit provided on the outer surface of the front wall of the container.

The interior is divided into a front chamber on the front wall side and a rear chamber on the rear wall side through a partition movable along the inner surface of the container,

Set the front chamber to the low temperature side and the rear chamber to the high temperature side,

A refrigeration container that cools the anterior chamber by a refrigeration unit while guiding cold air from the anterior chamber to the posterior chamber and cooling the posterior chamber,

The refrigeration unit is a prime mover;

A generator driven by a prime mover;

A refrigeration apparatus having an electric compressor driven by electricity generated by a generator,

An electric heater for preventing overcooling is provided in a rear chamber.

[2] The container consists of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation properties, and a refrigeration unit provided on the outer surface of the front wall of the container.

A refrigeration container having a flat surface on the bottom wall, a plurality of slats disposed on the bottom wall, and a partition disposed between a pair of adjacent slats.

[3] Consists of a container formed from a front wall, ceiling wall, bottom wall, left and right side walls, and rear wall each having heat insulation properties, and a refrigeration unit provided on the outer surface of the front wall of the container.

While the front chamber is cooled by the refrigeration unit, the cool air in the front chamber is guided to the rear chamber, and the rear chamber is cooled. A refrigerated container

While providing the heat exchanger and fan of the refrigeration unit above the inner surface of the front wall, one end is opened in the vicinity of the front wall over the entire width direction of the inner surface of the ceiling wall, and the other end is opened in the rear chamber. Provided with a flat ventilation duct,

In addition, there is a front opening and a rear opening at the rear end of the inner surface of the ceiling wall, a cooling fan and a circulation fan are installed inside, and an electric heater is arranged facing the front of the circulation fan. A duct,

Further, an air passage extending in the vertical direction facing the heat exchanger is provided on the inner surface of the front wall, and an air passage extending in the vertical direction facing the rear opening of the mixing duct is provided on the inner surface of the rear wall. One rear chamber opening communicates with the front opening facing the cool air fan of the mixing duct,

A refrigeration container, wherein a sealing material is provided on a peripheral surface of the partition, and is closely attached to an inner surface of a bottom wall, inner surfaces of left and right side walls formed on a flat surface, and an outer surface of a bottom wall of a ventilation duct.

[4] In the refrigeration container according to claim 3,

A refrigeration container, wherein a heat insulating material is provided on an inner surface of a bottom wall of the ventilation duct.

[5] The refrigeration container according to claim 3,

A shutter that operates from the closed position to the open position by air pressure generated when the cold air fan is driven is provided rotatably at one opening at the front chamber side and the other opening at the rear chamber side of the ventilation duct. Refrigerated container.

[6] The refrigeration container according to claim 3,

A refrigeration container, wherein air ribs are provided on both sides of the partition.

[7] The container consists of a front wall, a ceiling wall, a bottom wall, left and right side walls, and a rear wall each having heat insulation properties, and a refrigeration unit provided on the outer surface of the front wall of the container.

The interior is partitioned into a front chamber on the front wall side and a rear chamber on the rear wall side through a partition that is movable along the inner surface of the container and is rotatable between a storage position and a work position. Set the front chamber to the low temperature side and the rear chamber to the high temperature side.

Providing an electrical contact for detecting that the partition is in the retracted position;

A refrigeration container characterized in that, when the partition is in the retracted position, the two-temperature zone control for controlling the front chamber to the refrigeration temperature and the rear chamber to the refrigeration temperature based on the detection signal of the electrical contact is inhibited.

[8] The refrigeration container according to claim 7,

When the partition is in the storage position, an alarm is issued based on a detection signal of an electrical contact.

[9] Cargos with different storage temperatures can be controlled by using engine-driven generator-mounted refrigerators to control each chamber in the container partitioned into the first and second chambers with different target temperatures. A refrigerated container

The temperature of the second chamber is controlled by introducing the cool air of the refrigerator provided in the first chamber into the second chamber, and when the temperature of the second chamber is excessively lowered, In the cold insulation operation control device provided with a control means for controlling so as to maintain the temperature by the heater provided,

The control means for controlling the refrigeration container refrigeration operation, wherein the control means controls to stop the operation of one of the compressor and the heater of the refrigeration machine while the other is operating.

[10] In the refrigerated container cooling operation control device according to claim 9,

Priority is set to give priority to either the compressor or the heater,

The said control means controls either a compressor or a heater according to this priority, The cold storage operation control apparatus of the refrigeration container characterized by the above-mentioned.

[11] In the refrigerated container cooling operation control device according to claim 10,

The first chamber is a freezer, the second chamber is a refrigerator,

When the refrigeration side temperature deviation which is the difference of the internal temperature with respect to the set temperature on the freezer side is ΔΤ1, and the refrigeration side temperature deviation which is the difference of the internal temperature with respect to the set temperature of the refrigerator is ΔΤ2, In the case of 1 ° C <ΔΤ1, the control means controls the compressor to give priority to the temperature control of the freezer.

[12] In the refrigerated container cooling operation control device according to claim 11,

In the case of AT2 <−2 ° C, the control means operates the heater and gives priority to temperature control of the refrigerator when ΔΤ1 <0.5 ° C. Refrigeration operation control device.

[13] In the refrigerated container cold storage operation control device according to claim 11 or claim 12, the control means is -2 ° C <ΔΤ2 where 0 ° C and AT1 <0 ° C. Is a refrigeration container refrigeration operation control device that operates the heater and prioritizes refrigerator temperature control.

[14] In the refrigerated container cold storage control device according to any one of claims 11 to 13,

The control means, when 0 ° C <ΔΤ2 <0.5 ° C, and when ΔΤΚ-Ο.5 ° C, operates the heater to give priority to temperature control of the refrigerator. A cold storage control device for refrigeration containers.