JPH0644602U - Refrigeration unit for transportation - Google Patents

Abstract

(57) [Summary] [Object] The present invention aims to provide a refrigeration unit for transportation, which has a thin panel-shaped capacitor and is disposed on the roof of a container, and thereby does not require a fan and a motor. . According to the present invention, in a refrigerating unit for transportation in which a cooling unit is arranged in a container and a condensing unit is arranged in a proper place outside the container, the condenser forming the condensing unit is not a panel type condenser. A transport refrigeration unit is configured by arranging the same panel type condenser on the upper surface of a container.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transportation refrigeration unit applied to a land transportation refrigeration system.

[0002]

[Prior art]

 The main engine-driven land transportation refrigeration system, which is often used for medium-sized and small-sized vehicles, has a condensing unit, which corresponds to an outdoor unit, easily gets dirty when running under the floor or in front of the refrigerating room, and has a dedicated air blower. Need a fan for.

FIG. 2 is a perspective view of a conventional condensing unit 7. The condensing unit 7 is composed of a condenser coil 1, a blower fan 2, a fan motor 3 and a receiver 4 according to the ability, and is arranged in an integrated case for housing these. To be done. FIG. 3 is a side view of a conventional ground transportation refrigeration system. The condensing unit 7 is attached to an underfloor case 7a of a refrigeration vehicle or a front case 7b of a refrigerating compartment.

In the figure, 6 is a refrigerator and 7c is a cooling unit.

[0005]

[Problems to be solved by the device]

 The above-mentioned conventional land transportation refrigeration system has the following problems to be solved.

That is, even if the condensing unit is in front of the refrigerating room or under the floor, the dirt is severe, and the underfloor is especially dirty during traveling, which is a factor that reduces the efficiency of the capacitor coil. There was a problem.

[0007] Furthermore, although the movable part of the condenser is a fan and a fan motor, there is a tendency to use a large capacity fan and a fan motor in order to secure the capacity with a compact external dimension. It will be of considerable weight and the supports that support them must be strong to withstand vibration. In particular, motors had a problem in that there were many failures in the seals and electrodes that were used to make them waterproof.

In order to solve the above problems, the present invention aims to provide a transport refrigeration unit in which a capacitor is formed into a thin panel shape and is placed on the roof of a container, and thereby a fan and a fan motor are not required. And

[0009]

[Means for Solving the Problems]

 As a solution to the above problems, the present invention provides a condenser for forming a condensing unit in a transportation refrigeration unit in which a cooling unit is arranged in the container and a condensing unit is arranged in a proper place outside the container. It is intended to provide a refrigerating unit for transportation, characterized in that the panel-type capacitor is arranged on the upper surface of the container.

[0010]

[Action]

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

That is, since the condenser forming the condensing unit of the transportation refrigeration unit is a panel condenser and is arranged on the upper surface of the container, the surface area of the heat exchange section can be sufficiently increased, and Since it is installed on the rooftop, it is exposed to the running wind sufficiently and the air exchange rate increases, so there is no need for a forced fan (and therefore no fan motor), and a large cooling capacity is provided. A refrigeration unit can be obtained.

Incidentally, with respect to the shortage of the air volume while the vehicle is stopped, the frequency of use of the refrigeration system driven by the main engine for a long time is extremely low.

Further, the receiver, the strainer and the like may be mounted on the vehicle body in the refrigerant circuit and the size of the parts is small, so that the mounting position can be selected quite freely.

[0014]

【Example】

 An embodiment of the present invention will be described with reference to FIG. The same members as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted unless necessary.

FIG. 1 is a side view of a transportation refrigeration unit according to the present embodiment. In FIG. 1, 5 is one of the main components of the condensing unit, and is a refrigerator (container) equipped with the transportation refrigeration unit. The panel capacitor 6 is inclinedly arranged on the roof 6a, 6 is a refrigerating cabinet, and 6a is the roof of a refrigerator.

In the case of a small-sized vehicle equipped with the transportation refrigeration unit, the capacitor coil has an area of about 30 cm × 80 cm, and the refrigerant pipes are arranged in 3 to 4 rows. If this is arranged in a single row of refrigerant pipes, the area will expand four times, but since the rooftop 6a of the refrigerator has an area of several square meters, it is sufficiently large. Further, even if the fin area (not shown) is increased in consideration of cooling by running air instead of forced air blowing, it is sufficient to set the thickness to 10 to 15 mm if the fins are arranged in a row.

The unit of the panel capacitor 5 is a rectangle of 30 cm to 50 cm, and the required number corresponding to the capacity is arranged on the rooftop 6a of the refrigerator with a small angle of 10 ° or less. The upper surface may be covered to protect the fins and the refrigerant pipe (not shown). In addition, a fan with a small capacity may be provided if the usage condition is long when the vehicle is stopped.

As described above, according to this embodiment, since the panel capacitor 5 of the condensing unit is arranged on the roof 6a of the refrigerator, the exposure area to the air (atmosphere) can be made sufficiently large. In addition, since the exchange rate of the air that cools the fins and the like is increased by the traveling wind caused by the traveling of the vehicle, there is an advantage that a high cooling capacity is obtained overall and a motor fan for forced ventilation is not required.

Further, since the panel condenser 5 is arranged on the rooftop 6a of the refrigerator, which is the highest position as viewed from the transportation refrigeration unit, that is, on the upper surface of the container, the conventional example provided in front of the refrigerator or under the floor. Compared with the above, there is an advantage that the pollution degree is small and the breakdown is correspondingly small.

Further, since there is no main moving part such as a fan or a motor, there is an advantage that a failure due to it does not occur.

Further, since the panel capacitor 5 can be mounted simply by placing and fixing it on the rooftop 6a of the refrigerator without suspending it like a conventional underfloor or projecting and supporting it like the front of the refrigerator. There is an advantage that the strength is dramatically increased.

Further, since the fan motor is not used, there is an advantage that the battery consumption can be reduced.

Further, since the panel capacitor 5 is simply placed and fixed on the rooftop 6a of the refrigerator, a frame frame or the like as a condensing unit is not required unlike the conventional case, and the weight as a refrigeration unit can be reduced. There is an advantage.

[0024]

[Effect of device]

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

That is, according to the present invention, by arranging the panel type capacitor on the roof of the refrigerator, it is not necessary to use the fan and the fan motor which are required for the conventional capacitor.

Further, as a result, since it is not necessary to use electric power for the condenser fan motor, it is possible to reduce battery consumption.

Further, the condenser can be cooled by the traveling wind, and the roof has little splashing of the traveling tire, dust and other dirt, so that the heat exchange efficiency of the panel condenser can be maintained for a long time. Further, since the frame frame as the condensing unit is not required, the weight of the refrigeration system can be reduced.

Further, since the panel type capacitor is arranged on the upper surface of the container, there is no fear of strength.

[Brief description of drawings]

FIG. 1 is a side view of a transportation refrigeration unit according to an embodiment of the present invention,

FIG. 2 is a schematic perspective view showing a conventional condensing unit,

FIG. 3 is a schematic side view of a conventional land transport refrigeration system.

[Explanation of symbols]

 5 Panel condenser 6 Refrigerator 6a Refrigerator rooftop (top of roof) 7c Cooling unit

Claims (1)

[Scope of utility model registration request] 1. A transport refrigeration unit comprising a cooling unit disposed inside a container and a condensing unit disposed at an appropriate position outside the container, wherein the condenser forming the condensing unit is a panel condenser. A refrigeration unit for transportation, characterized in that the panel type condenser is arranged on the upper surface of a container.