JPH0524421B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conveyor-type refrigeration device for cooling or freezing foods and the like.

[Conventional technology and its drawbacks] Conventional conveyor-type refrigeration equipment that continuously cools or freezes frozen foods or other objects by placing them on a conveyor belt that circulates between the freezer compartment and the outside. In this case, cold air is blown out from an air cooler installed in the freezer compartment, and this cold air cools the upper part of the objects on the conveyor belt.

However, in such conventional conveyor-type refrigeration equipment, the surface heat transfer coefficient of the cold air is small compared to the surface heat transfer coefficient of the steel belt, resulting in uneven cooling, and it is difficult to uniformly cool or cool the object to be cooled. Cannot be frozen.

[Objective of the present invention] The present invention provides a conveyor-type refrigeration device that can cool or freeze objects on a steel belt from above with a high surface heat transfer coefficient, and can achieve quick and uniform cooling. I made it.

[Means] The conveyor-type refrigeration system according to the present invention has an endless conveyor belt, which is rotated at the same speed and in the same direction as the conveyor belt, above the endless conveyor belt which is rotated with the lower surface of the upper running part in contact with the upper surface of the frozen liquid tank. A bag belt-like belt is provided which is made to run and whose opening edge on one side is opened and closed by a fastener, and a refrigerant supply pipe and a refrigerant discharge pipe are installed at appropriate places in the fastener part of the lower running part of the bag belt-like belt. A fastener opening tool and a fastener closing tool are provided on the bracket inserted and fixed to each of these pipes, which are used when the fastener section of the lower running part of the rotating bag belt passes through the refrigerant supply pipe and the discharge pipe. It has a different configuration.

[Function] In the conveyor-type refrigeration system configured as described above, when brine, which is a frozen liquid, is supplied into the bag belt, the outer belt of the bag belt comes into contact with the top surface of the conveyor belt, and the top surface of the conveyor belt is brought into contact with the top surface of the conveyor belt. moving at speed.

In addition, the fastener attached to one side opening edge of the bag strip belt is opened in front of each pipe by an opening tool located on one side of the brine supply pipe and brine discharge pipe and a closing tool located on the other side. It closes again at the back of the tube and runs around.

[Example] An example of the present invention will be described in detail with reference to a specific example shown in FIGS. 1 to 4.

In the figure, reference numeral 1 is a driving roller driven by a motor (not shown), 2 is a driven roller, and an endless steel conveyor belt 3 is stretched around both rollers. Reference numerals 1a and 2a indicate the shafts of each roller. show.

However, the upper running portion 3a of the conveyor belt
On the bottom side is a brine tank 4 which is a frozen liquid tank with an opening at the top.
Brine, which is a frozen liquid in this brine tank 4, enters a brine cooler 7 from a brine discharge pipe 5, is cooled here, and is returned to the brine tank 4 from a brine supply pipe 6 by a liquid sending pump P. .

Further, above the conveyor belt 3, an endless bag-shaped belt 10 is provided in parallel with the conveyor belt 3, and is wrapped around a driving roller 8 and a driven roller 9.

This bag-shaped belt 10 is made of an endless inner belt 10a made of a material with low elasticity and an endless outer belt 10b made of a material with extremely high elasticity. Instead, the other edge is made open, and zip fasteners 11 are attached to the open edges of the inner and outer belts. Furthermore, a zip fastener 11 in the lower running portion of the bag belt 10
The brine supply pipe 13 is installed in the opening where the brine supply pipe 13 is installed.
and the same discharge pipe 14 are inserted.

Brackets 15, 15 are firmly fitted to each of the tubes 13, 14, and zip fastener closing tools 11a and opening tools 11b are attached to pins 16, 16 detachably attached to both ends of each bracket.

Therefore, the lower running portion of the bag-like belt 10 is opened by the zip fastener 1 by the opening tool 11b when passing through the brine supply pipe 13 and the brine discharge pipe 14.
1 is opened and passes each tube, the closure 11a
As a result, the zipper fastener 11 is closed, and the bag belt-like belt 10 is rotated in a sealed state.

In addition, in the lower running part of the bag belt 10,
Brine 20, which is a frozen liquid, is injected from the tank 19 through the brine supply pipe 13, and is returned to the tank 19 by the pump 18 from the brine discharge pipe in the lower running section.

When the conveyor type refrigeration system configured as described above is driven, the conveyor belt 3 and the bag strip belt 1 are
0 is made to run at the same speed and in the same direction.

Therefore, the zip fastener 11 on the lower running part of the bag belt 10 is connected to the opening tools 11b and 1 in front of the brine supply pipe 13 and the brine discharge pipe 14.
1b is opened and divided into upper and lower parts of each tube, and after passing through each tube 13 and 14, closing tools 11a and 11 are opened.
It is closed again by a and moves.

In addition, brine 20 is supplied into the brine tank 4 and the bag belt 10 by brine supply pipes 6 and 13.
is supplied, and the lower running part of the bag belt 10 is
The highly elastic outer belt 10b expands due to the weight of the supplied brine 20, comes into close contact with the upper surface of the upper running portion 3a of the conveyor belt, and moves in the same direction as the conveyor belt 3.

At this time, the inner belt 10a of the bag belt-like belt 10
has low elasticity, so it does not stretch due to being pulled by the outer belt 10b, and the zipper fastener 11 of the lower running portion becomes the inner brine 20 of the bag belt-like belt.
It will never drop below the liquid level.

Furthermore, when the brine tank 4 is filled with the brine 20, it is sent from the brine discharge pipe 5 to the brine cooler 7 by overflow etc. and cooled again, and then sent from the brine supply pipe 6 to the brine tank 4 by the liquid sending pump P. Sent.

Further, the brine 20 inside the bag belt 10 is sucked by the pump 18 and sent from the brine discharge pipe 14 to the tank 19, where it is cooled and sent back into the bag belt 10 by the liquid feeding popup 17. .

The object to be cooled 21 placed on the upper surface of the upper running section 3a of the steel belt is conveyed while being covered by the lower surface of the bag belt 10.

[Effect] As described above, according to the present invention, the lower surface of the object to be cooled on the steel belt is cooled by the steel belt, which is cooled by the brine in the brine tank, and the upper surface of the object to be cooled is also cooled by the brine in the brine tank. Since the object to be cooled is cooled by the brine in the belt, the object to be cooled is cooled from above and below with equal surface heat transfer coefficients, and the object to be cooled is evenly cooled.

Furthermore, since the object to be cooled is covered with the steel belt and the bag belt, the non-contact surfaces of the object to be cooled are also effectively cooled, and the object to be cooled can be cooled or frozen in a short time.

Furthermore, the bag strip belt is opened in front of each pipe by opening tools placed on the left and right sides of the brine supply pipe and the brine discharge pipe by zip fasteners, and when it passes each pipe, it is closed by a closing tool and moved. Therefore, it is possible to send the bag belt while the brine is stored inside the bag belt.

Moreover, the cooling temperature of the brine can be kept constant by constantly circulating the brine in the bag belt.

In addition, in this example, the inner belt of the bag belt was made of a member with a small elasticity, and the outer belt was made of a member with a very large elasticity, but the inner and outer belts were made of a member with a small elasticity. The same effect can be obtained by constructing a bag belt-like belt in which only the inner belt has a surface area that can be in contact with the upper surface of the steel belt, and attaching fasteners in the same manner as in the above embodiment.

In addition, the fastener of the bag belt-like belt is a zip fastener in this embodiment, but a fastener in which the protrusions and grooves fit into each other to close the belt can be used.
Similar effects can be expected by arranging the opening tool and the closing tool in the same manner as in this embodiment.

Furthermore, in this example, a liquid pump was separately provided to supply brine into the bag belt, but the brine tank was installed at a higher position than the liquid level of the brine in the bag belt, and the liquid suction pump Therefore, if the brine that overflows in the brine tank is supplied from the brine supply pipe into the bag belt, a liquid pump is not required.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a conveyor-type refrigeration system according to the present invention, Fig. 2 is a partially enlarged view of a bag belt, Fig. 3 is a sectional view taken along the line - - of Fig. 2, and Fig. 4 is a bag-shaped refrigeration device. It is a brine supply system diagram to a belt-like belt. In the figure, 1...drive roller, 1a...roller shaft,
2... Driven roller, 2a... Roller shaft, 3... Conveyor belt, 3a... Upper running part of conveyor belt, 4... Brine tank, 5... Brine discharge pipe, 6... Brine supply pipe, P... …Feed pump,
7... Brine cooler, 8... Drive roller, 8a
... Roller shaft, 9 ... Driven roller, 9a ... Roller shaft, 10 ... Bag belt, 10a ... Inner surface, 10b ... Outer surface, 11 ... Zip fastener, 11a ... Closing tool, 11b ... ...Opening tool, 12
a, 12b...opening, 13...brine supply pipe, 14...brine discharge pipe, 15...bracket, 16...pin, 17...liquid pump, 18...
...Pump, 19...Brine tank, 19a...
Refrigerant supply pipe, 19b... Refrigerant discharge pipe, 20... Brine, 21... Cooled object.

Claims (1)

[Claims] 1. The lower surface of the upper running part is in contact with the upper surface of the refrigerated liquid tank and is rotated above an endless conveyor belt, which is rotated at the same speed and in the same direction as this conveyor belt, and whose open edge on one side is connected to a fastener. A bag-like belt that can be opened and closed is provided, and a refrigerant supply pipe and the same discharge pipe are inserted into appropriate places in the fastener part of the lower running part of the bag-like belt, and brackets fixed to these pipes are A conveyor-type refrigeration apparatus comprising a fastener opening tool and a fastener closing tool when a fastener part of a lower running part of a rotating bag-shaped belt passes through the refrigerant supply pipe and the same discharge pipe.