JPH05312444A - Container freezer - Google Patents

Abstract

PURPOSE:To easily inform an operator in a machine chamber of a fact of abnormal interruption of a freezer assembled in each of many containers and easily specify a freezer which is abnormally interrupted. CONSTITUTION:Display means 35 for displaying an interruption signal issued from a container 34 is provided on each container 1 and display means 36 also on a machine chamber 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating device for containers transported by rail, ships, trailers and the like.

[0002]

2. Description of the Related Art A conventional refrigerating apparatus of this type is incorporated in each container, and the quality of the cargo stored in the container is maintained by cooling the air in the container. Further, the refrigeration system is equipped with various detection means for detecting the abnormality, for example, a high pressure switch for detecting the high pressure of the refrigerant circuit, a water temperature switch for detecting the cooling water temperature of the engine for driving the compressor, and the like. When an abnormality is detected by these detecting means, the operation of the refrigerating apparatus is stopped by the stop signal from the controller to prevent the refrigerating apparatus from being damaged.

[0003]

Although many containers of this type are loaded in freight cars, holds, etc., the operating status of the refrigeration system of each container could not be known in the engine room. When stopped by this, there is a problem that it is left for a long time in this stopped state, and as a result, the quality of the cargo stored in the container cannot be maintained.

[0004]

SUMMARY OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to detect the operating condition of a refrigerating machine incorporated in each of a number of containers. In a container refrigerating apparatus having a detecting means for stopping and a controller for stopping the refrigerating apparatus when the detecting means detects an abnormality, a display means for displaying a stop signal output from the controller is provided for each container and engine. A refrigerating apparatus for containers, which is arranged in a chamber.

[0005]

According to the present invention, since the refrigerating apparatus is stopped due to an abnormality, the stop signal is displayed on the display means provided in the engine room. Since the stop signal is also displayed on the display means provided in each container, it is possible to easily identify the stopped refrigeration system.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT One embodiment of the present invention is shown in FIGS. As shown in FIG. 1, a refrigeration system 2 is incorporated in each of a number of containers 1 loaded in a freight car.

A system diagram of the refrigeration system 2 is shown in FIG. In FIG. 2, 21 is an engine, 22 is a compressor driven by the engine 21, 23 is a condenser, 24 is a fan for blowing outside air to the condenser 23, 25 is an expansion valve, 26 is an evaporator, 27 is an evaporator 26. It is a fan for blowing the air in the container 1.

When the compressor 22 is driven by the engine 21, the gas refrigerant compressed by the compressor 22 enters the condenser 23, where it is condensed and vaporized by radiating heat to the outside air, and is then adiabatically expanded by being throttled by the expansion valve 25. .. Next, it enters the evaporator, where the air in the container 1 is cooled to evaporate and vaporize, and then returns to the compressor 22. The air cooled by the evaporator 26 becomes cool air and is blown into the container 1.

The refrigeration system 2 includes various detection means for detecting its operating condition, such as a high pressure switch 31 for detecting the discharge pressure of the compressor 22, a water temperature sensor 32 for detecting the temperature of the cooling water of the engine 21, and an engine 21. A hydraulic pressure sensor 33 for detecting the pressure of the lubricating oil is provided. These detecting means output the detected value to the controller 34 when the detected value deviates from a preset set value, that is, when an abnormality is detected. When the controller 34 receives an abnormal signal from the detecting means 31, 32, 33, it outputs a stop signal to the engine 21 to stop it. The above is the same as the conventional one.

As shown in FIGS. 1 and 2, the stop signal of each controller 34 is output to an indicator light 35 arranged in each container 1 and a display arranged in the engine room 3 via the cable 4. It is output to the lamp 36.

During operation of the refrigeration system 2, for example,
When the refrigeration load becomes excessive and the pressure of the refrigerant gas discharged from the compressor 22 exceeds a predetermined value, a high pressure switch
31 is actuated and signals are now input to the controller 34. Then, the controller 34 sends a stop signal to the engine 21.
Output to and stop this. At the same time, the indicator lamp 35 of the container 1 in which the refrigeration system 2 in which an abnormality has occurred due to this stop signal is turned on and the indicator lamp of the engine room 3 is turned on.
36 is illuminated.

Thus, when at least one refrigeration system 2 is stopped due to an abnormality, an indicator lamp arranged in the engine room 3
Since 36 lights up, an engineer can know this in the engine room 3, and the indicator light 35 arranged in the container 1 in which the stopped refrigeration system 2 is installed lights up, so that the frozen state stopped The device 2 can be specified. Therefore, appropriate measures can be taken at an early stage, and it is possible to avoid a situation where the refrigeration system 2 is left for a long time in a stopped state.

[0013]

According to the present invention, when the operation of at least one refrigerating device is stopped due to an abnormality, the stop signal is provided to the display means arranged in the engine room and the container incorporating the stopped refrigerating device. Since they are respectively displayed on the displayed display means, it is possible to know the abnormal stop in the engine room and to identify the stopped refrigeration system. As a result, it is possible to take appropriate measures at an early stage. Therefore, it is possible to avoid a situation in which the refrigeration system is left in a stopped state for a long time, and to prevent deterioration of the quality of the cargo due to ignorance of an abnormal stop. be able to.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a container refrigerating apparatus according to an embodiment of the present invention.

FIG. 2 is a system diagram of the refrigerating apparatus of the above embodiment.

[Explanation of symbols]

 1 Container 2 Refrigerator 3 Engine room 4 Cables 31, 32, 33 Detection means 34 Controller 35, 36 Display means

Claims (1)

[Claims] 1. A refrigerating machine for containers, comprising: detecting means for detecting an operating condition of a refrigerating apparatus incorporated in each of a number of containers; and a controller for stopping the refrigerating apparatus when the detecting means detects an abnormality. In the device,
A refrigerating apparatus for containers, wherein display means for displaying a stop signal output from the controller is provided in each container and the engine room.