JPH05306869A - Refrigeration plant - Google Patents

Abstract

PURPOSE:To make it possible to enhance refrigeration efficiency and cool a large amount of articles to be refrigerated by cooling the articles to be refrigerated in such a fashion that they may be wrapped in a carrier sheet and submerged in a refrigerant solution. CONSTITUTION:A slat conveyor 6 is a conveyor consisting of many horizontal slats on an endless conveyer and rotated in such a fashion that it may pass through a refrigerant solution 5 in a cooling tank 4 by driving a first drive device 7. A carrier sheet 8 is a continuous sheet and formed in the shape of a ring in its cross section. During carrier time, both U-shaped upper ends of the sheet is smoothly engaged with two carrier rails 9 formed in parallel and rotated by a second drive device 10. Articles 3 to be refrigerated are inserted in the carrier sheet 8. They are rolled and carried being submerged in the refrigerant solution 5 the cooling tank 4 in their carrier direction in such a fashion that they may be held with their bottom placed in contact with the slat conveyor 6 by driving the first drive device 7 and the second drive device 10 at the same speed. During this carrier operation, the carrier sheet 8 holds the articles 3 to be refrigerated and envelops their top and increase a contact area with the refrigerant solution 5, thereby enhancing refrigeration efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freezing device for freezing food.

[0002]

2. Description of the Related Art FIG. 18 shows, for example, JP-A-1-256355.
It is a front view showing a conventional refrigeration apparatus shown in Japanese Patent Publication,
In the figure, 1 is a refrigerating apparatus equipped with a refrigerating machine, 2 is a flat-bottomed tray for storing food, and 3 is a frozen object made of food such as meat or beans, which is in an unpackaged single state or a plastic sheet or the like. Supplied in assorted packaging.

Next, the operation will be described. An operator puts the object 3 to be frozen in the tray 2, stores it in the refrigerating apparatus 1, and seals it. Next, cold air supplied from a refrigerating machine (not shown) is blown on the object to be frozen 3 in the tray 2 to freeze it. Next, the operator takes out the tray 2 from the inside of the refrigerating apparatus 1 and conveys the frozen object 3 to be frozen to a predetermined place for storage. In addition, when putting the to-be-frozen object 3 in the tray 2, a small amount is put in a state where the stacking depth is shallow so that a difference in the refrigerating effect does not occur between the upper and lower stacked layers. Since the object to be frozen 3 is frozen in this manner, the above operation is repeated many times to perform the freezing process when the amount is large.

[0004]

Since the conventional refrigerating apparatus is constructed as described above, the object to be frozen 3 made of food is used.
You have to reduce the amount to speed up freezing,
There was a problem that the manual work increased and the work efficiency decreased.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a refrigerating apparatus which can efficiently freeze a large amount of an object to be frozen.

[0006]

A refrigerating apparatus according to the invention of claim 1 is a slat conveyor which is rotated by a first drive device through a coolant liquid in a cooling tank, and a bottom portion on a conveying surface of the slat conveyor. And a conveyance sheet that is rotated by a second drive device that contacts the object and stores the object to be frozen therein.

Further, the refrigerating apparatus according to the invention of claim 2 is
A slat conveyor consisting of a magnetic metal plate that is rotated by a drive device through the coolant liquid in the cooling tank and a magnetic member that can be magnetically fixed to the slat conveyor are provided at the bottom, and slidably moved by a transport rail to be frozen. It is provided with a conveying sheet for storing the items.

In the refrigerating apparatus according to the third aspect of the present invention, the two rail intervals of the transfer rail are wide on the loading / unloading side of the frozen object and narrow above the cooling tank, and the relative interval with the slat conveyor is set. It is lower than the loading / unloading side.

According to a fourth aspect of the present invention, there is provided a refrigerating apparatus, a cooling tank containing a refrigerant liquid, a perforated sheet conveyor provided with a plate-like projection and a hole and rotated by a driving device, and cold water upward. The inclined washing table having the first jet port for jetting water and the jet washing device having the second jet port for jetting the cold water downward are provided to face each other.

The refrigerating apparatus according to the fifth aspect of the present invention is provided with a switching device for switching and injecting cold water and mist-like water droplets from the first and second jet ports provided in the inclined washing table and the jet washing device. It is a thing.

According to a sixth aspect of the present invention, there is provided a refrigerating apparatus in which a protruding strip is formed along the conveying direction of the perforated sheet conveyor.

In the refrigerating apparatus according to the invention of claim 7, a groove portion communicating with the hole is provided on the conveying sheet surface of the perforated sheet conveyor along the conveying direction or the width direction.

According to the eighth aspect of the present invention, there is provided a refrigerating apparatus in which a minute projection is formed on the conveying sheet surface of the sheet conveyor, and a gap is provided between the placed frozen object and the sheet conveyor surface.

A refrigeration apparatus according to a ninth aspect of the present invention is provided with a steel belt conveyor which is rotated by a drive device in contact with an upper surface of a cooling tank provided with an injection device for injecting the refrigerant liquid upward. The cooling device for injecting the refrigerant liquid is provided on the lower surface of the wide seat belt that covers the.

According to a tenth aspect of the present invention, in the refrigerating apparatus, a plate-like protrusion is provided in the width direction on the conveying surface of the sheet conveyor which is rotated by the driving device while being immersed in the refrigerant liquid in the cooling tank, and the back surface is short. The scraping plate and the long scraping plate are provided alternately.

[0016]

In the refrigerating apparatus according to the first aspect of the present invention, the object to be frozen is wrapped in a conveying sheet, put in a refrigerant liquid, and cooled.

Further, in the refrigerating apparatus according to the second aspect of the present invention, the conveying sheet having the magnetic member enclosing the object to be frozen is attached to the slat conveyor of the magnetic metal plate and immersed in the refrigerant liquid for cooling. Only one drive is required, and cooling efficiency is improved.

In the refrigerating apparatus according to the third aspect of the present invention, the carrying sheet is expanded on the carry-in side and the carry-out side so that the object to be frozen can be easily inserted and taken out, and the object to be frozen can be easily wrapped in the refrigerant liquid. Therefore, the cooling is efficiently performed.

In the refrigerating apparatus according to the invention of claim 4, the object to be frozen is placed on a perforated sheet conveyor, immersed in the refrigerant liquid to be frozen, and then the adhering refrigerant liquid is washed off with cold water.

In the refrigerating apparatus according to the invention of claim 5, the refrigerant liquid adhering to the object to be frozen is washed away with cold water, and then mist-like water droplets are adhered to the surface of the object to be frozen, so that the low temperature possessed by the object to be frozen is maintained. By changing to thin film ice, it becomes possible to freeze for a long time.

In the refrigerating apparatus according to the sixth aspect of the present invention, since the protruding surface is provided on the conveying surface of the perforated sheet conveyor along the conveying direction, the sheet conveyor is not twisted and the strength is improved.

In the refrigerating apparatus according to the seventh aspect of the present invention, since the grooved portion communicating with the hole is provided on the conveying surface of the perforated sheet conveyor, it serves as a liquid passage for freezing and washing, and the above processing is improved.

In the refrigerating apparatus according to the invention of claim 8, the object to be frozen is supported by the minute projections formed on the conveying sheet surface of the sheet conveyor, so that the liquid passing during freezing and washing is good. Moreover, the inclination holding force of the frozen object becomes large.

In the refrigerating apparatus according to the invention of claim 9, the refrigerating efficiency is improved by injecting the refrigerant liquid from the seat belt which covers the object to be frozen placed on the steel belt conveyor together with the steel belt conveyor.

According to a tenth aspect of the invention, in the refrigerating apparatus, a sheet-like conveyor is provided with a plate-like projection portion to reliably convey a product to be frozen, and the cooling liquid is stirred by stirring the refrigerant liquid with the short scraping plate and the long scraping plate. To be uniform.

[0026]

【Example】

Example 1. An embodiment of the invention of claim 1 will be described below with reference to the drawings. In FIGS. 1 and 2, 4 is a cooling tank for storing a refrigerant liquid 5 which is opened at an upper portion and is cooled and supplied by a cooling device (not shown), and 6 is a slat conveyor in which a large number of plate-shaped members are connected to a conveyor chain. The first drive device 7 such as a speed reducer is rotated so that it can pass through the coolant liquid 5 in the cooling tank 4. Reference numeral 8 is a long conveying sheet having a ring-shaped cross section, and at the time of conveyance, a U-shaped upper end portion is easily slidably engaged with a conveying rail 9 composed of two parallel rails, and a second driving device 10 such as a speed reducer. Is rotated by. The two transport rails 9 are arranged with a wide interval in the upper part and a narrow interval in the lower part.

Next, the operation will be described. The to-be-frozen object 3 is inserted into the conveying sheet 8 and the bottom portion is the slat conveyor 6
The first drive device 7 and the second drive device 10 which are driven at a constant speed in a state of being held in contact with and are rotated in the transport direction and transported while being immersed in the coolant liquid 5 in the cooling tank 4. .. At this time, the transport sheet 8 is kept so as to wrap around the upper surface of the frozen object 3, and the contact area with the refrigerant liquid 5 is increased to improve the cooling efficiency.

Example 2. An embodiment of the invention of claim 2 will be shown. In FIG. 3, 11 is a slat conveyor made of a magnetic metal plate, which is rotated in the carrying direction by the first driving device 7 of FIG. Reference numeral 12 denotes a magnetic member such as a magnetic belt, which is attached along the carrying direction of the bottom of the U-shaped carrying sheet 8. Next, the operation will be described. The conveyance sheet 8 having the frozen object 3 inserted therein is magnetically fixed to the slat conveyor 11 by the magnetic member 12 provided at the bottom, and conveyed while being rotated by the first driving device 7. Are rotated together in the direction. After the object 3 to be frozen is taken out by the same operation as in the first embodiment, the slat conveyor 11 is rotated downward on the carry-out side, and the conveying sheet 8 is moved upward along the conveying rails 9 as the magnetic member 12 is moved.
The magnetic sticking of is disappeared and separated.

Example 3. In FIGS. 4 and 5 showing an embodiment of the invention of claim 3, 13 is a conveying rail composed of two parallel rails, and on the loading side and the unloading side of the frozen object 3, the rail is parallel to the horizontal direction. The interval is widened, and the transport sheet 8 that is slidably locked is expanded to facilitate the insertion and removal of the frozen object 3, and above the cooling tank 4,
The rail spacing is narrowed, the relative spacing to the slat conveyor 6 is smaller than that on the loading side and the unloading side, and the opening of the conveying sheet 8 is narrowed to adhere the side surface of the sheet and to slacken the sheet. The upper surface of the frozen material 3 is covered to increase the cooling area of the refrigerant liquid 5. The operation of this device and the treatment of the object to be frozen are the same as those in the above-described first embodiment, and the description thereof will be omitted.

Example 4. In FIGS. 6 and 7 showing an embodiment of the invention of claim 4, 15 is a perforated sheet conveyor, which is a plate-like protruding portion 16 and a plurality of holes along the conveyance direction at predetermined intervals along the width direction on the conveyance surface. The portion 17 is provided, and the object to be frozen 3 that has been placed by passing through the refrigerant liquid 5 stored in the cooling tank 4 by being rotated in the transport direction by the drive device 18 is immersed in the refrigerant liquid 5 to cool it. Let Reference numeral 19 denotes an inclined washing stand provided on the carry-out side of the cooling tank 4 with its upper surface facing downward in the carrying direction, and has a first jet port 20 for jetting cold water upward. Two
Reference numeral 1 denotes an injection cleaning device, which has a second injection port 22 provided above the inclined cleaning table 19 and injecting cold water downward.
Next, the operation will be described. The object to be frozen 3 is immersed in the refrigerant liquid 5 while being held in the plate-like protrusion 16 of the perforated sheet conveyor 15 while being conveyed into the refrigerant liquid 5 of the cooling tank 4, and is directly cooled from the upper surface and the hole 17. After that, on the inclined washing table 19, cold water is jetted from both sides at the first jet port 20 and the second jet port 22 to wash away the adhering refrigerant liquid 5 to obtain a clean frozen object 3. ..

Example 5. In FIG. 8 showing an embodiment of the invention of claim 5, a first jet port 20 and a second jet port 2 are shown.
2 is provided so that cold water and mist-like water droplets can be selectively jetted toward the object to be frozen 3 by the switching device 23.
The rest of the configuration is similar to that of the fourth embodiment. After the object 3 to be frozen is frozen while being placed on the perforated sheet conveyor 15 in the same manner as described above, first on the inclined washing table 19, first, the first jet port 20 and the second jet port 22 are moved up and down. Cold water is sprayed from the direction to wash away the adhering refrigerant liquid 5. Next, the cold water is switched to spray mist-like water droplets from above and below to attach the water to the surface of the frozen object 3.

Next, the operation will be described. A refrigerating method by the refrigerating apparatus in FIG. 8 will be described. The object to be frozen 3 is immersed in the refrigerant liquid 5 in which the temperature of the cooling tank 4 is kept at 5 ° C. to 10 ° C. below zero and is frozen while being conveyed while being placed on the perforated sheet conveyor 15, From the top and bottom of the first jet port 20 and the second jet port 22 on the inclined washing table 19,
First, cold water is sprayed to wash off the adhering refrigerant liquid 5.
Next, mist-like water droplets switched from the cold water by the switching device 23 are jetted from the upper and lower sides respectively to adhere water to the surface of the frozen object, and the adhered water is 5 ° C to 10 ° C below zero. A thin film ice is formed at a low temperature which is frozen at a temperature of ℃, and the mist water droplets are continuously blown for a predetermined time to perform a glaze process for forming the thin film ice to a predetermined thickness.
In the above glaze treatment, thin film ice can be formed even with the residual water content of the cold water that has washed away the coolant liquid 5, but a complete glaze treatment is completed by spraying mist-like water droplets.

Example 6. In FIGS. 9 and 10 showing an embodiment of the invention of claim 6, 26 is a continuous protrusion provided on the conveying sheet surface of the perforated sheet conveyor 15 along the conveying direction so as to avoid the hole portion 17. .. Since the length is long and the holes 17 are provided on the entire surface, the strength is lowered and twisting in the length direction is likely to occur. Therefore, by forming the protrusions 26, the strength is improved and the conveyor can be used for a long time. Becomes

Example 7. In FIGS. 11 and 12 showing an embodiment of the invention of claim 7, 27 is a groove portion provided on the conveying sheet surface of the perforated sheet conveyor 15 so as to communicate with the hole portion 17 along the conveying direction. The rest of the configuration is similar to that of the fourth embodiment. The object to be frozen 3 is immersed in the refrigerant liquid 5 in a state where it is placed on the perforated sheet conveyor 15 and is frozen, and then the first injection port 20 and the second injection port 22 are placed on the inclined washing table 19. Cold water is sprayed from above and below to wash off the adhering refrigerant liquid 5. The object to be frozen 3 and the groove portion 2 are immersed in the refrigerant liquid 5 and sprayed with cold water.
The respective liquids flow through the gaps provided between the 7 and 7 to effectively perform the dipping and washing treatments.

Example 8. In FIGS. 13 and 14 showing an embodiment of the invention of claim 8, 28 is a dot-like minute protrusion formed at a predetermined interval on the entire surface of the conveying sheet of the perforated sheet conveyor 15. The other configurations are the same as those in the fourth embodiment.
Is the same as. The frozen object 3 is a perforated sheet conveyor 15
After being immersed in the refrigerant liquid 5 while being placed on the minute protrusions 28, the cold water is sprayed to wash off the adhered refrigerant liquid 5. The respective liquids flow through the gaps provided between the protrusions 28 to effectively perform the dipping and washing treatment. It should be noted that the tip of the minute protrusion 28 is the object to be frozen 3
Since the contact pressure per unit with and becomes large and the holding force is improved, slippage or the like in the inclined state does not occur, and the sheet can be conveyed reliably.

Example 9. 15 and 16 showing an embodiment of the invention of claim 9, 30 is an injection device for injecting the refrigerant liquid 5 stored in the cooling tank 4 upward, 31 is a speed reducer with a predetermined gap with the upper surface of the cooling tank 4. First drive device 32, etc.
Steel belt conveyor, which is rotated in the transport direction by 33,
Is a seat belt that is rotated in the transport direction by the second drive device 34 and is wider than the steel belt conveyor 31. Reference numeral 35 is a cooling device for injecting the refrigerant liquid 5 onto the lower seat surface of the seat belt. Next, the operation will be described. The object to be frozen 3 is placed on the steel belt conveyor 31, the upper surface thereof is covered with the seat belt 33, and is rotated in the carrying direction by the first driving device 32 and the second driving device 34, respectively. The injection device 30 of the cooling tank 4 injects the coolant liquid 5 to the steel belt conveyor 31 to cool the lower surface of the object 3, and the cooling device 35 causes the seat belt 33 to rotate.
The upper surface portion is cooled by the refrigerant liquid 5 injected into the. Since the seat belt 33 completely covers the frozen object 3 and the steel belt conveyor 31 in the width direction, the refrigerant liquid 5 sprayed from the cooling device 35 onto the seat belt 33 surface.
Are collected in the cooling tank 4 via both edges.

Example 10. In FIG. 17 showing one embodiment of the invention of claim 10, 36 is a sheet conveyor, and plate-like projections 37 extending in the width direction at predetermined intervals along the conveyance direction are horizontally provided on the conveyance surface, and on the back side, the conveyance direction. A short scraping plate 38 and a long scraping plate 39 are alternately arranged at predetermined intervals along, and a part thereof is immersed in the coolant liquid 5 in the cooling tank 4 while being rotated in the transport direction by the drive device 40. It is provided to pass through. The to-be-frozen object 3 is placed on the sheet conveyor 36, held by the plate-like protrusions 37, and conveyed, and the refrigerant liquid 5
It is dipped in and cooled. At this time, the short scraping plate 38 and the long scraping plate 39 stir the refrigerant liquid 5 in the cooling tank 4 to make the cooling temperature uniform and improve the cooling efficiency.

[0038]

As described above, according to the first aspect of the present invention, the object to be frozen is immersed in the refrigerant liquid in a state of being wrapped in the conveying sheet and cooled, so that the refrigerating efficiency is good,
Further, there is an effect that a large amount of the object to be frozen can be cooled.

According to the second aspect of the present invention, since a magnetic member is attached to the conveying sheet and the sheet is attached to the slat conveyor of a magnetic metal plate and conveyed, the driving device can be halved and the equipment can be installed. This has the effect of reducing costs.

According to the third aspect of the invention, since the interval and height position of the transport rail for mounting the transport sheet are changed, there is an effect that the frozen matter can be carried in and out and cooled efficiently.

According to the invention of claim 4, the object to be frozen is placed on the perforated sheet conveyor and immersed in the refrigerant liquid, so that there is an effect that the freezing can be directly carried out to improve the freezing efficiency. is there.

According to the fifth aspect of the present invention, after the refrigerant liquid adhering to the object to be frozen is washed away with cold water, mist-like water droplets are further sprayed to cover the surface of the object to be frozen with water droplets to block the outside air. Since the layer is provided, there is an effect that long-term freezing is possible by performing glaze processing at the low temperature of the object to be frozen to change and form the water droplets into thin film ice.

According to the invention of claim 6, since the projecting strips are provided along the conveying direction of the perforated sheet conveyor, there is an effect that the sheet conveyor is not twisted and the strength is increased and the life is extended. ..

According to the invention of claim 7, since the grooved portion communicating with the hole portion is provided on the conveying surface of the perforated sheet conveyor, it serves as a liquid passage for dipping and washing the refrigerant liquid. It has the effect of improving processing.

According to the invention of claim 8, since the object to be frozen is supported by the minute projections provided on the conveying surface of the sheet conveyor, the liquid passing during the immersion of the refrigerant liquid and the washing is good, In addition, there is an effect that the frozen object has a good holding force when it is conveyed in an inclined direction and can be conveyed at a predetermined interval without causing stumbling.

According to the ninth aspect of the present invention, since the refrigerant liquid is jetted from the seat belt which covers the object to be frozen placed on the steel belt conveyor, the refrigerating efficiency is improved without touching the refrigerant liquid. There is an effect that can be improved.

According to the tenth aspect of the present invention, a plate-like protrusion is provided on the conveying surface of the sheet conveyor to reliably convey the frozen object, and the refrigerant liquid is agitated by the scraping plates having different lengths. As a result, the cooling temperature can be made uniform, and there is an effect that freezing unevenness is eliminated.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a refrigerating apparatus according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the same device.

FIG. 3 is a side sectional view showing a refrigerating apparatus according to an embodiment of the invention of claim 2.

FIG. 4 is a front sectional view showing a refrigerating apparatus according to an embodiment of the invention of claim 3.

FIG. 5 is a side sectional view of the device.

FIG. 6 is a side sectional view showing a refrigerating apparatus according to an embodiment of the invention of claim 4.

FIG. 7 is a partial plan view of the device.

FIG. 8 is a front sectional view showing a refrigerating apparatus according to an embodiment of the invention of claim 5.

FIG. 9 is a partial plan view showing a refrigerating apparatus according to an embodiment of the invention of claim 6;

FIG. 10 is a side sectional view of the device.

FIG. 11 is a partial plan view showing a refrigerating apparatus according to an embodiment of the invention of claim 7;

FIG. 12 is a side sectional view of the device.

FIG. 13 is a partial plan view showing a refrigerating apparatus according to an embodiment of the invention of claim 8;

FIG. 14 is a side view of the device.

FIG. 15 is a front view showing a refrigerating apparatus according to an embodiment of the present invention.

FIG. 16 is a side sectional view of the device.

FIG. 17 is a front view showing a refrigerating apparatus according to an embodiment of the invention of claim 10;

FIG. 18 is a front view showing a conventional refrigeration system.

[Explanation of symbols]

 3 Refrigerator 4 Cooling Tank 5 Refrigerant Liquid 6 Slat Conveyor 7 First Driving Device 8 Conveying Sheet 10 Second Driving Device 11 Slat Conveyor 12 Magnetic Member 13 Conveying Rail 15 Perforated Sheet Conveyor 16 Plate-like Protrusion 17 Hole 18 Drive Device 19 Inclined Washing Platform 20 First Jet Port 21 Jet Cleaning Device 22 Second Jet Port 23 Switching Device 26 Projection Strip 27 Groove 28 Micro Projection 30 Injection Device 31 Steel Belt Conveyor 32 First Drive Device 33 Sheet Belt 34 Second drive device 35 Cooling device 36 Sheet conveyor 37 Plate-like protrusion 38 Short scraping plate 39 Long scraping plate 40 Drive device

Claims (10)

[Claims] 1. A cooling tank having an opened upper part for storing a refrigerant liquid, a slat conveyor which is rotatable in the carrying direction by a first drive device so as to be able to carry the inside of the refrigerant liquid of the cooling tank, and the slat conveyor. A refrigerating apparatus comprising: a conveyance sheet having a bottom portion in contact with the conveyance surface thereof, provided above the cooling tank for accommodating an object to be frozen therein, and being rotated in a conveyance direction by a second driving device. 2. A cooling tank having an opening at the top and containing a refrigerant liquid, and a slat conveyor made of a magnetic metal plate which is rotatable in the carrying direction by a drive device so that the refrigerant liquid in the cooling tank can be carried. A transport sheet which is provided above the cooling tank by contacting the bottom of the transport surface of the slat conveyer and stores the frozen object inside and is rotated in the transport direction, and the slat provided at the bottom of the transport sheet. A refrigeration system including a magnetic member that magnetically adheres to a conveyor. 3. A cooling tank having an opening at an upper portion for storing a refrigerant liquid, a slat conveyor which is rotated in the transportation direction so as to be capable of transporting in the cooling tank, and a bottom surface is in contact with a transportation surface of the slat conveyor so that the cooling is performed. The transport sheet is provided above the tank and accommodates the frozen object and is rotated in the transport direction; and two parallel rails that lock the transport sheet and transport the transport sheet in the transport direction. The interval is wide on the carry-in side and the carry-out side of the frozen object, and narrow above the cooling tank,
Further, a refrigerating apparatus comprising: a transfer rail having a relative distance from the slat conveyor lower than that of the loading / unloading side. 4. A cooling tank containing a refrigerant liquid, and plate-like projections provided at a predetermined interval along the carrying direction in a width direction on the carrying surface so as to be able to pass through the inside of the refrigerant liquid and having a plurality of holes. An inclined washing machine having a perforated sheet conveyor that is rotated in the transport direction by a driving device and a first jet port that injects cold water upward on the unloading side of the cooling tank and is provided with an inclined upper surface. A refrigerating apparatus comprising: a table; and an injection cleaning device that is provided above the inclined cleaning table and has a second ejection port that injects cold water downward. 5. A cooling tank containing a refrigerant liquid, and plate-like projections provided at a predetermined interval along the carrying direction in the width direction so as to be able to pass through the inside of the refrigerant liquid and having a plurality of holes. It has a perforated sheet conveyor that is rotated in the transport direction by a drive device, and has a first jet port that jets cold water and mist-like water droplets upward on the carry-out side of the cooling tank, and has an inclined upper surface. A slanted washing stand provided above the slanted washing stand and spraying cold water and mist-like water droplets downward
And a switching device for selectively jetting cold water or mist-like water droplets from the first and second jet outlets. 6. A cooling tank containing a refrigerant liquid, a perforated sheet conveyor having a plurality of holes rotated in the conveying direction so as to be able to pass through the inside of the refrigerant liquid, and a conveying surface of the perforated sheet conveyor, wherein A refrigerating device provided with a protrusion provided along the transport direction. 7. A cooling tank containing a refrigerant liquid, a perforated sheet conveyor having a plurality of holes rotated in the conveying direction so as to be able to pass through the inside of the refrigerant liquid, and the perforated sheet conveyor on the conveying surface thereof. A refrigerating device comprising: a groove provided in communication with the hole along the transport direction or the width direction. 8. A cooling tank containing a refrigerant liquid, a perforated sheet conveyor having a plurality of holes rotated in the conveying direction so as to be able to pass through the refrigerant liquid, and a conveying surface of the perforated sheet conveyor. Refrigerating apparatus having a plurality of minute protrusions formed therein. 9. A cooling tank provided with an injection device for accommodating a refrigerant liquid and injecting the refrigerant liquid upward, and a first drive device rotating in the carrying direction with a predetermined distance from the upper surface of the cooling tank. A steel belt conveyor, a seat belt that covers the carrying surface of the steel belt conveyor and that is wider than the steel belt conveyor, and that is rotated in the carrying direction by the second drive device; A refrigeration system including a cooling device that injects a refrigerant liquid. 10. A cooling tank having an opening at the top and containing a refrigerant liquid, a sheet conveyor which is rotated in a conveying direction by a drive device so as to be able to convey the inside of the refrigerant liquid of the cooling tank, and a conveying surface of the sheet conveyor. A plate-shaped projection portion provided in the width direction at a predetermined interval along the carrying direction, and a short scraping plate and a long scraping plate alternately provided at a predetermined interval along the carrying direction on the lower surface of the sheet conveyor. Refrigeration equipment.