JP3470224B2 - Conveyor cooling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor cooling device for cooling an article placed on a conveyor and moving.

[0002]

2. Description of the Related Art Conventionally, as a wiring device of this type, Japanese Patent Laid-Open No.
Japanese Patent Publication No. 1-83275 (F25D13 / 06) cools an article that is placed on a conveyor and moves, and extends parallel to the conveyor and is formed on both sides of the conveyor. A cool air suction port for sucking cool air, a cool air suction duct for returning the cool air sucked from the cool air suction port to a cooling device, and formed above the conveyor, and extending in parallel with the conveyor, from the cooling device. Disclosed is a configuration including a cold air discharge duct made of cloth and configured to discharge the sent cool air onto the conveyor.

[0003]

The above-mentioned conventional technique has a drawback that the wind velocity of the cool air from the discharge duct is slow and a sufficient air curtain cannot be formed.

Further, although the cool air for cooling the conveyor cooling device is cooled by the cooler, there is a disadvantage that the amount of frost formed on the cooler is large and the number of times of defrosting of the cooler is large.

The present invention has been made in view of the above problems, and provides a conveyor cooling device in which a sufficient air curtain is formed on the conveyor and the amount of frost formed on the cooler is suppressed.

[0006]

As means for achieving the above object, in claim 1, a cooling device is provided inside,
A cooling unit that is cooled to a predetermined low temperature by a cooling device, an article conveying unit that has a conveyor that conveys an article, and a cool air that is formed above the conveyor and extends parallel to the conveyor, and that is sent from the cooling unit. the a conveying duct section having a conveying duct for blowing the conveyor, the conveying duct partition
It is divided into a high pressure chamber and a rectification chamber by a plate, and from the cooling unit to the high pressure chamber.
Cold air is sent to the high pressure chamber through the hole formed in the partition plate.
Is blown out into the rectifying chamber and is discharged from the outlet of the rectifying chamber.
It is a conveyor cooling device characterized by being configured as described above.

As described above, since the transfer duct has the two chambers, the high pressure chamber and the rectifying chamber, the cold air blown out from the high pressure chamber is blown out in a rectified state in the rectifying chamber, so that a sufficient air curtain is formed. can do.

According to a second aspect, in addition to the first aspect, the cooling device has a first cooler having an evaporation temperature of 0 ° C. or higher, and a second cooler having an evaporation temperature lower than that of the first cooler. The second cooler is formed on the downstream side of the first cooler.

As described above, the cooling device has the first cooler having an evaporation temperature of 0 ° C. or more and the second cooler having an evaporation temperature lower than that of the first cooler, and is provided on the downstream side of the first cooler. By forming the second cooler, in addition to claim 1, it is possible to reduce the amount of frost formed on the second cooler having a low evaporation temperature by allowing water contained in the cool air to adhere to the first cooler as dew. it can.

According to a third aspect of the present invention, in addition to the first aspect, a column for arranging the article conveying section above the conveyor is provided.
A drain pipe for guiding the drain water of the article transporting section downward is provided in the column.

As described above, the column for positioning the article conveying section above the conveyor is provided, and the drain pipe for guiding the drain water of the article conveying section downward is provided in the column, whereby the dew inside the article conveying section is provided. Can be efficiently drained.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the conveyor cooling device 1, FIG.
Is a vertical sectional view of the conveyor cooling device 1, and FIG. 3 is AA of FIG.
FIG.

The conveyor cooling device 1 has a cooling section 2, a duct section 3, an article conveying section 4, and a support column 5.

In the cooling unit 2, the first cooling device 11 that constitutes the cooling device 10 and has an evaporation temperature of 0 degrees or higher, and the second cooling that has a lower evaporation temperature than the first cooling device 11 (eg, -5 degrees or lower). The air conditioner 12 is provided, the second cooler 12 is formed on the downstream side of the first cooler 11, and the blower 13 is formed between the first cooler 11 and the second cooler. Further, outside the cooling unit 2, there is a first refrigerator 14 that constitutes a refrigerating device together with the first cooler 11 and a second refrigerator 15 that constitutes a refrigerating device together with the second cooler 12. Further, below the first cooler 11, a drain pan 16 for receiving the dew adhering to the first cooler 11 is provided, and a drain pipe 17 for guiding the dew in the drain pan 16 to the pit 18 is provided. It is provided. Further, here, only the first cooler 11 has been described for the drain tray 16 and the drain pipe 17, but
The second cooler 12 is also provided with a similar drain pan and drain pipe (not shown).

With the above structure, since the second cooler 12 is formed on the downstream side of the first cooler 11 having the evaporation temperature of 0 ° C. or higher, most of the water contained in the cool air is contained in the first cooler 11.
Can be attached as dew to, and the amount of frost formed on the second cooler 12 having a low evaporation temperature can be reduced, and the number of times of defrosting of the second cooler 12 can be reduced. By reducing the number of times of defrosting, the temperature inside the conveyor cooling device 1 can be stabilized, and the articles to be conveyed can always be cooled in the same manner.

The duct portion 3 is provided with a heat insulating wall 21 around it, and the inside of the duct portion 3 has a pressure of 100 to 20 rather than atmospheric pressure.
High-pressure chamber 22 and high-pressure chamber 2 that have a high pressure of about 0 Pa
A rectifying chamber 23 having a pressure substantially equal to the atmospheric pressure for rectifying the cool air blown out from the chamber 2 is provided. Further, the high pressure chamber 22 and the rectifying chamber 23 are partitioned by a partition plate 24, and a hole 25 for guiding the cool air in the high pressure chamber 22 to the rectifying chamber 23 is formed in the center of the partition plate 24. The cool air rectified by the rectifying chamber 23 is discharged from the cool air discharge ports 26 formed on both sides of the rectifying chamber 23. Further, the cool air discharge port 26 is provided with a louver 27 for further enhancing the rectifying effect of the cool air. Here, the discharge port 26 is provided above the lower surface 28 of the flow regulating chamber 23.

The article conveying section 4 is provided with a pair of left and right conveyors 31 for conveying articles (not shown), cold air suction ports 32 are formed on both sides below the conveyor 31, and a return passage is provided under the cold air suction port 32. 33 is formed.

With the above structure, an air curtain can be formed from the cool air discharge port 26 to the cool air suction port 32, and the cool air sucked by the cool air suction port 32 is blown by the blower 13 from the return passage 33 to the first cooler 11. In addition, after being guided to the second cooler 12 and cooled, the circulation is again guided to the cool air discharge port 26.

The high-pressure chamber 22 and the rectifying chamber 2 are provided on the support column 5 for positioning the duct portion 3 above the article transporting portion 4.
Drain pipe 4 for guiding the dew generated in 3 to the pit 18.
1 is provided, and the upper end of the drain pipe 41 is connected to the lower surface 28 of the flow regulating chamber 23. And the drain pipe 41
The dew guided to (1) is discharged from the drain pipe 51 together with the dew generated from the first cooler 11 and the second cooler 12. That is, the dew inside the article transport unit 3 can be efficiently drained.

In this embodiment, one pillar 5 is formed at the end of the duct portion 3 opposite to the cooling portion 2, but a plurality of pillars 5 may be provided or the position thereof may be changed according to the length of the duct portion 3. You can also

[0022]

As described in detail above, in claim 1, since the transfer duct has two chambers, a high pressure chamber and a rectifying chamber, the cold air blown out from the high pressure chamber is rectified in the rectifying chamber and blown out. Therefore, a sufficient air curtain can be formed.

In the second aspect, the cooling device has a first cooler having an evaporation temperature of 0 ° C. or higher and a second cooler having an evaporation temperature lower than that of the first cooler. By forming the second cooler on the downstream side of the cooler, the amount of frost formed on the second cooler having a low evaporation temperature can be reduced in addition to the first aspect.

According to the third aspect of the present invention, there is provided a pillar for locating the article conveying section above the conveyor, and a drain pipe for guiding the drain water of the article conveying section downward is provided in the pillar so that the article conveying section is provided with a drain pipe. Dew can be efficiently drained.

[Brief description of drawings]

FIG. 1 is a perspective view of a conveyor cooling device.

FIG. 2 is a vertical sectional view of a conveyor cooling device.

3 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

1 Conveyor cooling device 2 Cooling unit 2 3 duct section 4 Article transport section 5 props 10 Cooling device 11 First cooler 12 Second cooler 22 High pressure chamber 23 Rectification room 31 conveyor 41 Drain pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-9-152249 (JP, A) JP-A-11-263437 (JP, A) JP-A-11-83275 (JP, A) Actual development Sho-55- 89980 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 13/06

Claims (3)

(57) [Claims] [Claim 1 further comprising a cooling device therein, and a cooling unit which is cooled to a predetermined low temperature by the cooling device, the article conveyor portion having a conveyor for conveying the articles, and are formed above the conveyor
A conveyor duct section having a conveyor duct that extends in parallel with the conveyor and blows the cool air sent from the cooling section to the conveyor, the conveyor duct being a partition plate and a high pressure chamber
It is partitioned into a chamber and cold air is sent from the cooling unit to the high pressure chamber,
Cold air in the high-pressure chamber blows out into the flow straightening chamber from the hole formed in the cut plate.
However, it is configured to be discharged from the discharge port of the rectification chamber.
Conveyor cooling device, characterized in that that. 2. The cooling device includes a first cooler having an evaporation temperature of 0 ° C. or higher and a second cooler having an evaporation temperature lower than that of the first cooler, and a first cooler is provided downstream of the first cooler. The conveyor cooling device according to claim 1, wherein two cooling devices are formed. 3. A column for arranging the article transport unit above the conveyor is provided, and a drain pipe for guiding the drain water of the article transport unit downward is provided in the column. Conveyor cooling device.