JPS6230710Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has a ventilation structure for a container refrigerator, specifically, a main body casing that is provided with an air passage that communicates with a cooling chamber and is open to the inside of the refrigerator, and an evaporator and a fan are installed in the cooling chamber. Concerning the ventilation structure of an internal container refrigerator.

Conventionally, the ventilation structure of this type of container refrigerator has been to provide an intake port that opens to the outside on the suction side of a fan installed in the cooling chamber, and to arrange an exhaust port in parallel near this intake port to remove the exhaust gas. An exhaust pipe such as a vinyl tube extending to the blowing side of the fan is connected to the opening so that a part of the air blown from the fan is exhausted to the outside from the exhaust opening.

As mentioned above, the purpose of using an exhaust pipe is to place the intake and exhaust ports close together so that they can be opened and closed using a single damper device. According to the conventional ventilation structure used, not only is the structure complicated, but also clamping materials and the like are required for fixing the exhaust pipe, which increases the number of parts, and the work of fixing the exhaust pipe is difficult. It was time consuming.

Furthermore, the exhaust pipe largely overhangs the blowout passage of the fan, which increases the resistance of the blowout passage and reduces the service space.

Therefore, in order to solve the above-mentioned problem, the present applicant proposed in Utility Model Application No. 117012-1987 a system that eliminates the exhaust pipe to enable ventilation. This ventilation structure is as shown in Fig. 1, and to briefly explain it, in a container refrigerator having a cooling chamber 4 in the upper part and a machine room 6 in the lower part, an inlet for internal air is used. Fan 43 installed in the cooling chamber 4 provided with 71
An air inlet 8 that opens to the outside is provided on the suction side of the refrigerator, and a partition wall 51 made of a heat insulating material that defines the machine room 6 and the cooling room 4, which has a wall 61 made of a heat insulating material on the inside of the refrigerator, is provided with an air inlet 8 that opens to the outside. and an exhaust port 9 that opens to the inside of the refrigerator.
1 is provided, while recesses 54, 54 are provided in the wall 61 to communicate the air passages 52, 52 for blowing air provided on the left and right outer surfaces of the machine room 6 with the exhaust port 91. The recesses 54, 54 are closed by a back plate 7 attached to the inside of the cooling chamber 4,
This is an exhaust duct.

By doing so, the above problem can be solved, but the partition wall 51 is provided with an exhaust port 91 that opens to the outside and the inside of the refrigerator, and the wall 61 is provided with an exhaust port 91 that communicates with the air passage 52. Recess 5
4, the structure of the partition wall 51 and the wall 61 is complicated, the processing cost increases, and the length of the exhaust duct formed by the recess 54 becomes long. Since the partition wall 51 is formed of a heat insulating material with high air flow resistance, there is a problem in that the passage resistance loss of the exhaust passage formed by the exhaust duct becomes large.

Therefore, the purpose of the present invention is to provide the main body casing with an inlet port and an exhaust port that open to the outside, and to
The inner plate of the main body casing is bulged inward, and both ends of the bulge are communicated with the exhaust port and the blowing passage of the fan, resulting in a simple structure with a small number of parts.
In addition, the resistance of the blowing passage of the fan is small, the service space can be enlarged, the exhaust passage can be easily processed, the overall length of the exhaust passage can be shortened, and the air flow resistance in the passage can be reduced. It is possible to reduce the air flow resistance of the exhaust passage as a whole by using the inner plate of the main body casing.

The configuration of the present invention is a ventilation structure for a container refrigerator, which includes a main body casing having an air passage communicating with a cooling chamber and opening into the refrigerator, and in which an evaporator and a fan are installed inside the cooling chamber. The main body casing is provided with an inlet port and an exhaust port that open to the outside, and the inlet port is opened to the suction side of the fan, and the inner plate of the casing is bulged inward to the main body casing, and one end thereof is provided. is connected to the exhaust port and the other end is open to the blowing side of the fan to form an exhaust duct, so that the overall structure of the exhaust passage can be simplified and the number of parts can be reduced, and it can be easily processed and the air flow resistance can be reduced. It is characterized by the following.

Embodiments of the present invention will be described below based on the drawings.

A container refrigerator 1 equipped with a ventilation structure according to the present invention is used by being disposed in the front part of a freezer 3 in a refrigerating container 2, as shown in FIG.
The refrigerator 1 is constructed using a main body casing 5 having a cooling chamber 4 in the upper part open to the freezer 3 side and a machine room 6 in the lower part closed to the freezer 3 side. 4 and the machine room 6 are separated by a partition wall 51, and on both sides of the machine room 6, the lower part of the cooling room 4 and the lower part of the freezer 3 are communicated with each other as shown in FIG. Air passages 52, 52 for cooling air are formed. Further, a back plate 7 having an inlet 71 at the upper part is attached to the freezer 3 side of the cooling chamber 4, and the air inside the freezer 3 flows into the cooling chamber 4 through the inlet 71. It is.

Further, an evaporator 41 is disposed in the cooling chamber 4 below the inlet port 71, and the lower part of the evaporator 41 is attached to a guide mounting plate 42, and the lower part of the evaporator 41 is attached to the guide mounting plate 42. Fans 43, 43 are arranged at respective positions facing the upper part of the air passages 52, 52,
The guide plates 44, 44 of these fans 43, 43,
It is attached from the lower surface of the mounting plate 42 to the upper surface of the partition wall 51. Note that a compressor, a condenser, an accumulator, etc. (not shown) are arranged in the machine room 6.

The main body casing 5 of the refrigerator 1 is constructed by surrounding a heat insulating layer 5a made of hard urethane foam or the like with an outer plate 5b and an inner plate 5c made of FRP or the like.

Therefore, the ventilation structure of the present invention basically provides the main body casing 5 with an intake port 8 and an exhaust port 91 that open to the outside, and opens the intake port 8 to the suction side of the fan 43. , an exhaust duct 9 is formed in the main body casing 5 by bulging the inner plate 5c of the casing 5 inward, and having one end communicating with the exhaust port 91 and the other end opening to the blowing side of the fan 43. It is.

Specifically, as shown in FIGS. 2 to 4, the intake port 8 is provided above the outer side of one end of the evaporator 41 in the main casing 5, and the exhaust port 91 is provided below the intake port 8. Then, the exhaust duct 9, which is provided on the fan suction side below the mounting plate 42 and is formed by bulging the inner plate 5c of the main body casing 5, is connected to the guide plate 4 from around the exhaust port 91.
4 and on the blowing side of the fan 43.
It is formed as if it had.

In addition, on the front side of the intake port 8 and the exhaust port 91, as schematically shown in FIG. 2, the intake port 8 and the exhaust port 91 are closed during non-ventilation (the state shown in FIG. 1), and are deviated upward during ventilation. A lid 53 is attached to adjust the opening degree of the intake port 8 and the exhaust port 91.

The cold air in the container refrigerator 1 constructed as described above flows in the direction of the arrow shown in the drawing. That is, the cold air that has flowed from the freezer 3 into the cooling chamber 4 through the inlet 71 is cooled by the evaporator 41 and flows downward.
3, 43, the air passage 5
2, 52, and when it flows down inside the air passages 52, 52, it spreads to the bottom of the freezer 3, blows up from the bottom, rises, and returns to the inlet 71.
Therefore, it flows into the cooling chamber 4.

When the intake port 8 and the exhaust port 91 are opened by the lid 53 for ventilation, the following airflow is formed.

That is, since the intake port 8 is provided on the intake side of the fan 43, outside air flows into the cooling chamber 4 from the intake port 8.

On the other hand, although the exhaust port 91 is provided on the suction side of the fan 43, it is communicated with the blowout side of the fan 43 through the exhaust duct 9.
The air that has passed through 3 flows through the exhaust duct 9,
It is discharged to the outside of the machine from the exhaust port 91.

Therefore, the inside of the machine is ventilated by bulging the inner plate 5c of the main body casing 5, without requiring an exhaust pipe such as a vinyl tube that communicates the outlet side of the fan 43 with the exhaust port 91. Since the duct 9 is formed, the processing and structure of the exhaust passage can be simplified, no space is required for arranging the exhaust pipe, the service space is widened, and the resistance loss caused by the exhaust pipe can be eliminated. No need for the above-mentioned clamp material, etc.
This reduces the number of parts, making parts management easier and reducing costs.

Moreover, the length of the exhaust port 91 is extremely small, about the same as the thickness of the main body casing 5, and the passage wall includes the inner plate 5c of the main body casing 5 with low air flow resistance, so that the entire exhaust passage is air-free. The resistance loss can be made extremely small.

Furthermore, since the exhaust port 91 is configured to communicate with the discharge side of the fan 43 through the exhaust duct 9,
Together with the intake port 8, it can be provided at any position of the main casing 5 in the cooling chamber 4, specifically, regardless of whether it is above or below the mounting plate 42, and regardless of the position between both sides.

As is clear from the above explanation, the present invention has an air passage 5 which communicates with the cooling chamber 4 and which is open to the interior of the refrigerator.
This is a ventilation structure of a container refrigerator including a main body casing 5 having a main body casing 2 and an evaporator 41 and a fan 42 installed in the cooling chamber 4. 91 to open the intake port 8 to the suction side of the fan 43, and the main body casing 5,
Since the inner plate 5c of the casing 5 is bulged inward to form the exhaust duct 9, one end of which communicates with the exhaust port 91 and the other end open to the air outlet side of the fan 43, an exhaust pipe is necessary. Therefore, the number of parts is small, the structure is simple, and assembly is easy, and the air flow resistance on the blowing side of the fan can be reduced, and the service space is large, making maintenance and inspection easy. It is easy to process and has extremely low air flow resistance.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing a conventional example, Figures 2 to 4
The figures show an embodiment of the present invention; Fig. 2 is a front sectional view, Fig. 3 is a side sectional view taken along line X-X in Fig. 2, and Fig. 4 is an enlarged explanatory view of the main parts. be. 4... Cooling chamber, 41... Evaporator, 43... Fan, 5... Main body casing, 5c... Inner plate, 52
...Air passage, 8...Intake port, 9...Exhaust duct, 91...Exhaust port.

Claims (1)

[Scope of utility model registration request] A ventilation structure for a container refrigerator comprising a main body casing 5 provided with an air passage 52 communicating with a cooling chamber 4 and opening into the interior of the container, and in which an evaporator 41 and a fan 43 are installed in the cooling chamber 4. The main body casing 5 has an intake port 8 and an exhaust port 9 that open to the outside.
1 to open the intake port 8 to the suction side of the fan 43, and the main body casing 5.
The container refrigeration is characterized in that the inner plate 5c of the casing 5 is formed with an exhaust duct 9 that bulges inward to communicate with the exhaust port 91 at one end and open to the outlet side of the fan 43 at the other end. Machine ventilation structure.