JP3708643B2 - Cooling structure of condenser in refrigerated storage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an efficient cooling method for a condenser in a type in which a machine room including a condenser and a compressor is disposed on a ceiling portion of a storage in a cooling storage installed indoors.
[0002]
[Prior art]
Conventionally, as a cooling storage cabinet installed indoors, as shown in FIG. 3 and FIG. 4, a partition plate 3 in which louvers 2 are formed on the front surface and both side surfaces of the ceiling portion of the storage cabinet 1 covered with a heat insulating material is used. The chamber 4 is partitioned, the condenser 5 of the refrigeration cycle is arranged in the partitioned machine room 4, and condensation is performed by sucking air from the front side of the machine room with the cooling fan 6 installed in the vicinity of the condenser 5. The apparatus 5 is cooled by air and cooled by blowing out air heated by heat exchange to the back side of the machine room. In addition, 7 is a filter installed on the suction side of the condenser 5, and 8 is a leg of the storage.
In general, in order to increase the effective volume of the cooling storage, the height of the storage including the machine room is often designed to be close to the height near the ceiling in the room. In addition, in order to take a large room after the storage is installed, the storage is often installed just at the wall.
Furthermore, the temperature in the room is not uniform, and generally the upper part is high and the vicinity of the floor is the lowest.
[0003]
[Problems to be solved by the invention]
For this reason, the conventional cooling type storage room having the machine room on the ceiling cannot cool the condenser as expected because the condenser is cooled by taking in air near the ceiling. Further, if the ceiling is low, a short cycle in which the exhausted air is sucked again occurs, so that the cooling efficiency may be further reduced.
Furthermore, since the air filter is installed near the condenser, there is a disadvantage that maintenance work such as cleaning and replacement of the filter is expensive and difficult.
In addition, a storage for business use is desired to be as low as possible so that it can be easily transported. However, since the condenser is used in a standing position, there is a disadvantage that the height cannot be reduced.
Therefore, the present invention has been made in view of the drawbacks of the prior art, it is possible to cool the condenser by taking in air from the lowest temperature in the room, there is no risk that the exhausted air short cycle, An object of the present invention is to provide a storage room in which maintenance work such as a filter is easy and the height of a machine room can be made lower than before.
[0004]
[Means for Solving the Problems]
That is, the present invention has a refrigeration cycle comprising a compressor, a condenser, an expansion valve and an evaporator , and cools the condenser of the refrigeration cycle by a cooling fan and a duct extending at least from the bottom side to the ceiling side of the storage. In addition, in the cooling-type storage unit that cools the motor of the storage unit agitator provided to protrude into the side duct , a fan motor maintenance door is provided in front of the storage unit. cooling structure of the condenser according to the combination of improved cooling efficiency can be prevented overheating of the stirring motor, by further providing the door in the front portion, it is possible to facilitate the maintenance operations of the stirring motor. Also, a ceiling duct connected to the storage ceiling through a cooling fan is provided from the top of the side duct, and the outlet of the ceiling duct is inclined obliquely upward and frozen in accordance with the inclined outlet. by installing the condenser cycle, while reducing the height of the machine room, the air heated by the condenser can be discharged laterally.
[0005]
[Action]
In the structure of the apparatus according to the present invention, the cooling air is sucked from the lower part (floor surface) of the side duct so that the coolest air is taken in the room, and the sucked cooling air is sucked into the condenser via the ceiling duct. It has a structure that sprays toward. Therefore, since the air used for cooling is the air having the lowest temperature in the room and the exhausted heated air is not short-cycled, the condenser is efficiently cooled.
In addition, in the case where the outlet is provided above the ceiling duct and the condenser is installed horizontally, the height is low because the condenser is horizontal.
Furthermore, the ceiling duct is formed with a tapered shape with a cross-sectional area extending downstream, and the outer peripheral edge of the duct outlet is inclined obliquely upward, and a condenser for the refrigeration cycle is installed in accordance with the inclined outlet. Can provide a blower outlet that matches the condenser regardless of the size of the duct on the side and the size of the cooling fan, and the hot air can be circulated through the room efficiently by blowing obliquely in the side direction. This will prevent the room temperature from becoming high.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In the following, the invention will be described in detail according to the illustrated embodiment.
FIG. 1 shows a first embodiment according to the present invention. A side duct 10 continuous from the floor surface to the ceiling portion of the storage 1 is connected to any side of the storage 1, and the side duct An air filter 12 is attached to the lower opening 10, and an inlet of a cooling fan 14 such as a sirocco fan or a cross flow fan is connected to the upper opening. A ceiling duct 16 extending in a substantially horizontal direction is connected to the discharge port of the cooling fan 14, and the other end of the ceiling duct 16 has a blowing opening upward, and the condenser 5 of the refrigeration cycle is horizontally disposed in the opening. is set up. In the side duct 10, a motor 18 for agitating the inside of the storage is provided so as to protrude from the side wall of the storage 1.
[0007]
Next, FIG. 2 shows a second embodiment according to the present invention, and a side duct 10 that is continuous from the vicinity of the floor surface to the vicinity of the ceiling of the storage 1 is connected to any side of the storage 1 as described above. An air filter 12 is attached to the side surface of the lower end of the side duct 10, and an inlet of a cooling fan 14 such as a sirocco fan or a cross flow fan is connected to the upper opening. The cooling fan 14 has a discharge duct with a taper so that the cross-sectional area is widened toward the downstream, and a ceiling duct 17 in which the opening peripheral line of the discharge opening is inclined obliquely upward. A condenser 5 for a refrigeration cycle is installed in accordance with the outlet. Reference numeral 20 denotes a guide plate which passes the lower part of the condenser 5 and the partition plate 3 so that the air discharged from the condenser 5 flows without staying. By installing the condenser at an angle (angle θ), the height of the machine room can be made lower than when standing upright.
[0008]
It should be noted that the width of the side duct 10 is determined by the diameter of the cooling fan to be installed, and the depth is preferably as much as the depth of the storage as much as possible in order to suck air efficiently. The width of the ceiling duct and the discharge opening is prepared according to the width of the condenser 5, and the width of the suction opening is set according to the size of the discharge port of the cooling fan, which is the case of the first embodiment. Need to be tapered in the horizontal direction.
Reference numeral 19 denotes a door provided in the front portion of the side duct 10, and maintenance of the motor 18 arranged in the side duct 10 can be facilitated by opening and closing the door 19. In addition, although not shown, the side duct 10 can be provided with a distribution board other than the refrigerant piping of the refrigeration cycle, electrical wiring, and the like.
[0009]
In the apparatus according to the embodiment of the present invention having the above-described configuration, the air on the floor surface having the lowest temperature in the room is passed through the air filter 12 installed below (below or on the side of) the side duct 10. Inhale by driving. The sucked cooling air is blown out toward the ceiling duct 16 (or 17) by the cooling fan 14, and is heated by exchanging heat with the condenser 5 installed in the blowing opening of the ceiling duct 16 (or 17). 5 is discharged from the discharge side.
Here, in the first embodiment, there is a margin between the ceiling of the room because the condenser 5 is installed horizontally, and it flows in all directions while being dispersed after colliding with the ceiling.
Moreover, in the thing of 2nd Example, the condenser 5 will be discharged | emitted toward the side surface direction of the storage 1 in relation to being installed diagonally. In any of the embodiments, the side duct 10, the cooling fan 14, and the ceiling ducts 16 and 17 are connected to each other without a gap, so that the air discharged from the condenser 5 is short-cycled into the duct 16. There is no infiltration, and cold air near the floor is always blown toward the condenser 5.
[0010]
In the case where the door 19 is provided in the front portion of the side duct 10, when the stirring motor 18 or the like breaks down, the maintenance work may be performed by opening the door 19. Further, when the air filter 12 is replaced, the filter 12 is installed as it is because it is installed in the lower part of the side duct 10.
[0011]
【The invention's effect】
As described above, the condenser cooling structure according to the present invention cools the condenser by taking in the air near the floor surface, which is the lowest temperature compared to the conventional apparatus, and prevents a short cycle. In addition, a product with high cooling efficiency can be provided. Since the air filter is installed at the lower part of the side duct, maintenance work such as replacement of the air filter is facilitated.
In addition, since the cooling air is blown out toward the condenser through the side duct, cooling fan and ceiling duct, the condenser can be installed horizontally or at an angle. The height can be lowered.
Furthermore, since the height of the whole storage can be made lower than that of the conventional one, the heated air can be evenly dispersed.
[Brief description of the drawings]
FIG. 1 is a partially transparent front view of the structure of an apparatus according to a first embodiment of the present invention.
FIG. 2 is a partially transparent front view of the structure of the apparatus of the second embodiment according to the present invention.
FIG. 3 is a front view of an apparatus showing the prior art.
FIG. 4 is a partially transparent side view of an apparatus showing the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Louver 3 Partition plate 4 Machine room 5 Condenser 6 Cooling fan 7 Air filter 8 Leg 10 Side duct 12 Air filter 14 Cooling fan 16 Ceiling duct 17 Ceiling duct 18 Motor 19 Door 20 Guide plate

Claims (1)

A refrigeration cycle comprising a compressor, a condenser, an expansion valve and an evaporator, and the condenser of the refrigeration cycle is cooled by a cooling fan and a duct extending at least from the bottom side to the ceiling side of the storage, The cooling structure of the condenser which provided the door for the maintenance of a fan motor in the front of the storage in the cooling-type storage which cools the motor of the storage stirrer provided protruding in the side duct.

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