JP6957437B2 - Liquid cooling device - Google Patents

Description

The present invention relates to a liquid cooling device that is applied to a heating system and cools an object to be heated by applying a coolant liquid.

It is widely practiced to seal foods with airtight packaging to prevent oxidation and contamination, such as vacuum packaging. For such packaged foods, a heating system is used for cooking or sterilization. The heat treatment used may be applied. In this case, since the packaged food to be heated becomes hot due to the heat treatment, it is necessary to cool the packaged food to a temperature suitable for packaging or chilled refrigeration when shipping the packaged food. For this cooling, conventionally, a conventional technique has been adopted in which a plurality of trays on which packaged foods are placed are stacked vertically and the packaged foods on each tray are cooled by applying a coolant such as cooling water (for example, Patent Document 1). See). Here, in the technique described in Patent Document 1, a large number of through holes are provided in the tray, and a rapid flow of the remaining cooling water is realized.

Japanese Unexamined Patent Publication No. 2000-210062

However, in the above-mentioned conventional technique, the coolant liquid is applied from outside the stack of trays on which the packaged food to be heated is placed. Therefore, in the above-mentioned conventional technique, there is a problem that a place where the coolant liquid is hard to reach is formed in the central portion of the tray and the cooling efficiency of the object to be heated is deteriorated in this place.

The present invention makes it possible to improve the cooling efficiency of the object to be heated by reducing the places where the coolant is difficult to reach when the coolant is applied to the object to be heated and cooled on the tray. Is.

The present invention is applied to a heating system that heats an object to be heated in a state where a plurality of trays in which the object to be heated is placed on a bottom having through holes penetrating in the vertical direction are stacked in the vertical direction. It includes a liquid cooling device that cools each object to be heated by applying a liquid. This liquid cooling device includes a pipe capable of flowing a coolant liquid and making each through hole in a plurality of trays stacked in the vertical direction into a slippery state, and a pipe provided in the pipe and a coolant. It is provided with a nozzle having an injection port for injecting a liquid so as to be directed between a plurality of trays stacked in the vertical direction in a slanted state.

According to the above-mentioned liquid cooling device, it is possible to apply the coolant liquid from the inside of the overlapping trays to the objects to be heated placed on the trays stacked in the vertical direction.

In one preferred embodiment, the nozzle comprises a peripheral wall that is erected along the outer circumference of the bottom to block the passage of coolant and an internal space surrounded by the peripheral wall. It is located in the internal space in the untidy state.

In this case, the coolant liquid ejected by the nozzle is sprayed inside the peripheral wall of the tray, which hinders the arrival of the coolant liquid from outside the stack of trays.

In another preferred embodiment, the nozzle is a spray nozzle having a flat spray pattern that is long along the bottom of the tray in the untidy state.

In this case, in the coolant liquid sprayed between the plurality of trays, the proportion of the coolant liquid scattered on the route deviated upward or downward is reduced.

In another preferred embodiment, the jetted coolant liquid is provided with a plurality of nozzles having different reach.

In this case, by injecting the coolant liquid from the plurality of nozzles, the reachable range of the coolant liquid becomes wider.

The liquid cooling device of the present invention can improve the cooling efficiency of the object to be heated by reducing the places where the coolant is difficult to reach when the coolant is applied to the object to be heated placed on the tray to cool the object. ..

It is sectional drawing of the main part which showed the heating system 20 to which the liquid cooling apparatus 10 which concerns on one Embodiment of this invention is applied. FIG. 1 is a cross-sectional view taken along the line II-II of FIG. FIG. 2 is a cross-sectional view taken along the line III-III of FIG. It is an enlarged view of the IV part of FIG. FIG. 3 is a cross-sectional view taken along the line VV of FIG. It is a thermography showing the experimental result of the experimental group in the control experiment for verifying the usefulness of this invention. It is a thermography showing the experimental result of the control group in the control experiment for verifying the usefulness of this invention. FIG. 5 is a cross-sectional view of a main part showing a liquid cooling device 30 according to a modification of the liquid cooling device 10 of FIG. 1 and a heating system 20 to which the liquid cooling device 30 is applied. FIG. 8 is a cross-sectional view taken along the line IX-IX of FIG.

Hereinafter, the liquid cooling device 10 according to the embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 2 to 4, the liquid cooling device 10 uses the food (specifically, for example, fried tofu) contained in the pouch bag as the object to be heated, and heats the object to be heated 90 to sterilize the object 90. It is applied to the heating system 20 (see FIG. 2).

Here, the object to be heated 90 is heated in a state of being placed on a metal tray, which is a metal tray, on which a peripheral wall 21C is erected along the outer periphery of a square flat plate-shaped bottom 21A. A plurality of the banju 21 can be stacked in the vertical direction. In the present embodiment, the bottom 21A of the banju 21 has a rectangular shape with a long side of 960 [mm] and a short side of 630 [mm]. Further, the Banju 21 has a rectangular parallelepiped box shape as a whole because the height of the peripheral wall 21C is uniformly set to 40 [mm].

As shown in FIGS. 1 and 2, the heating system 20 includes a processing tank 22 capable of storing a plurality of banju 21 in a vertically stacked state. In the processing tank 22, a pedestal 22A on which the vertically stacked banju 21 is placed, a plurality of nozzles 22B protruding from the side walls and the ceiling of the processing tank 22, and an opening in the processing tank 22. A steam pipe (not shown) is provided.

Here, the steam pipe injects steam (not shown) having heat energy capable of heat sterilizing the object to be heated 90 (see FIG. 2) so that the steam can be filled in the processing tank 22. It has become. Further, each nozzle 22B can inject a coolant liquid 90A capable of cooling the heated banju 21 and the object to be heated 90. In the present embodiment, cooling water is supplied to each nozzle 22B as the coolant liquid 90A, and the cooling water is sprayed toward the vertically stacked banju 21 to display the cooling water 21 and the cover. The heated object 90 is cooled.

As shown in FIGS. 3 and 4, the banju 21 can accommodate a plurality of objects to be heated 90 side by side in the internal space 21D surrounded by the peripheral wall 21C. The bottom 21A and the peripheral wall 21C of the banju 21 are formed of a punching metal having a large number of punched holes 21E (see FIG. 3) and punched holes 21F (see FIG. 4), which are through holes, respectively. As a result, the banju 21 is made so that steam from the heating system 20 reaches each object to be heated 90 placed on the bottom 21A of the internal space 21D.

Further, the bottom 21A of the banju 21 is provided with a long hole 21B, which is a long strip-shaped through hole for partitioning the bottom 21A into two, separately from the punching metal punching hole 21E. The elongated holes 21B are provided so as to penetrate in the vertical direction (vertical direction as seen in FIG. 4) in a state where a plurality of banju 21 are stacked in the vertical direction. Further, when a plurality of Banju 21 are stacked in the vertical direction, the bottoms 21A can be stacked in the vertical direction with the bottoms 21A parallel to each other and the positions and orientations of the elongated holes 21B are aligned. There is. In the present embodiment, the elongated holes 21B are provided so as to extend in the longitudinal direction (left-right direction in FIG. 3) through the center of the rectangular shape between the short sides facing each other in the rectangular shape of the bottom 21A. The bottom 21A is divided into two congruent rectangular shapes.

As shown in FIG. 2, the liquid cooling device 10 includes a metal connector 11 that is detachably connected to a pipe 20A through which the coolant liquid 90A is circulated in the heating system 20, and three welded connectors 11 to the metal connector 11. It includes metal pipes 10A, 10B, and 10C.

The connector 11 has a faucet socket 11A that serves as a connection port to the pipe 20A on the side surface of a long pipe having a size corresponding to the long hole 21B of the banju 21, the weight of the long pipe, and the load applied to the long pipe. It is configured to be provided with two sets of legs 11B that support the above. These legs 11B are placed on the edge of the long hole 21B of the banju 21 so that the long tube of the connector 11 is placed on the long hole 21B of the banju 21. Realize to stop.

Further, the three metal tubes 10A, 10B, and 10C are linearly arranged from each end and the center of the long tube of the connector 11 toward the same side as the leg 11B (lower side when viewed in FIG. 2). It has been extended. Therefore, in the three metal pipes 10A, 10B, and 10C, in a stacked state in which a plurality of banju 21 are stacked in the vertical direction with the positions and orientations of the elongated holes 21B aligned, the elongated holes 21B are in a sluggish state. It becomes a tube that can be used.

By the way, the connector 11 divides the coolant liquid 90A flowing from the pipe 20A into three and allows the coolant liquid 90A to flow into the three metal pipes 10A, 10B and 10C. Each of these metal pipes 10A, 10B, and 10C is provided with a plurality of spray nozzles 12, and the inflowing coolant 90A is ejected from the injection port 12A of the spray nozzle 12 (see FIG. 3) and discharged. ing. The spray nozzles 12 provided on the metal tubes 10A, 10B, and 10C are nozzles having the same configuration except for the arrangement location thereof.

In the metal tube 10A extending from the end of one side (left side when viewed in FIG. 2) of the long tube of the connector 11, each spray nozzle 12 has an injection port 12A on the other side of the long tube of the connector 11. They are arranged in upper and lower rows while facing. Further, in the metal tube 10C extending from the end of the long tube of the connector 11 on the other side (right side when viewed in FIG. 2), each spray nozzle 12 has the injection port 12A facing the one side. , Arranged in upper and lower rows. Further, in the metal tube 10B extending from the central portion of the long tube of the connector 11, each spray nozzle 12 is moved up and down with a part of the spray nozzle 12 facing the other side and the rest facing the other side. Arranged in a row.

As a result, each spray nozzle 12 has a different range of reach of the sprayed coolant liquid 90A. In the present embodiment, the spray nozzle 12 facing one side of the plurality of spray nozzles 12 applies the coolant 90A to the internal space 21D of the banju 21 which is an odd number from the top in the vertical overlap of the banju 21. Positioned to reach. Further, among the plurality of spray nozzles 12, the spray nozzle 12 facing the other side is such that the coolant liquid 90A reaches the internal space 21D of the banju 21 which is an even number from the top in the vertical overlap of the banju 21. Be located.

Further, in the liquid cooling device 10, the injection port 12A of each spray nozzle 12 is set in a set state in which the leg portion 11B is placed in the above-described state and the metal tubes 10A, 10B, and 10C are set in the above-mentioned hollow state. Is in a state of facing between a plurality of banju 21. More specifically, as shown in FIG. 4, the injection port 12A of each spray nozzle 12 has the bottom 21A of the lower banju 21 in the internal space 21D sandwiched between the two banju 21 from above and below in the set state. It is located closer to the bottom 21A of the upper surface 21.

Then, as shown in FIGS. 3 to 5, each spray nozzle 12 is flattened so that the coolant liquid 90A is long in the direction (left-right direction as seen in FIG. 5) along the bottom 21A of the banju 21 in the above-mentioned untouched state. The spray pattern 12B of the shape is used for spraying. In the present embodiment, each spray nozzle 12 injects the coolant liquid 90A in a direction parallel to the bottom 21A of the banju 21 located above the injection port 12A.

Subsequently, an example of how to use the liquid cooling device 10 having each of the above-described configurations will be described. When the liquid cooling device 10 is used in this usage method, the user of the liquid cooling device 10 (hereinafter, also simply referred to as "user") first receives a plurality of bans each containing the object to be heated 90. A total of 21 and a liquid cooling device 10 are prepared, and these are assembled so as to be in the above-mentioned set state.

Then, the user carries the plurality of banju 21 in the set state into the processing tank 22 of the heating system 20 together with the liquid cooling device 10 and puts them on the gantry 22A. Subsequently, the user connects the faucet socket 11A of the liquid cooling device 10 to the pipe 20A of the heating system 20 to bring the liquid cooling device 10 into a state of being applied to the heating system 20.

Then, the user injects steam from the steam pipe of the heating system 20 and waits for a predetermined heating time while maintaining this state. At this time, the steam injected from the steam pipe fills the processing tank 22 and heats the banju 21 and the object to be heated 90, so that the object to be heated 90 is sterilized.

When the waiting for the heating time is completed, the user stops the injection of steam from the nozzle 22B and starts the injection of the coolant liquid 90A (specifically, for example, cooling water) from the nozzle 22B. Further, the user causes the coolant liquid 90A to flow from the pipe 20A into the connector 11 of the liquid cooling device 10 and injects the coolant liquid 90A from the spray nozzle 12. Then, the user waits for a predetermined cooling time while maintaining this state.

At this time, the coolant liquid 90A sprayed from the spray nozzle 12 is applied to the object to be heated 90 in the internal space 21D of the banju 21 to cool the object to be heated 90, and a hole in the bottom 21A of the banju 21 is removed. It is leaked to the outside through 21E. Further, the coolant liquid 90A injected from the nozzle 22B hits the peripheral wall 21C of the banju 21. Since the peripheral wall 21C obstructs the passage of the coolant liquid 90A, the coolant liquid 90A flows down on the peripheral wall 21C while cooling the peripheral wall 21C of the banju 21. However, a part of the coolant liquid 90A injected from the nozzle 22B passes through the extraction hole 21F of the peripheral wall 21C and reaches the internal space 21D of the banju 21, and while cooling the object to be heated 90 and the banju 21. It flows out of the overlap of the banju 21 through the hole 21E of the bottom 21A.

When the waiting for the cooling time is completed, the user stops the inflow of the coolant liquid 90A into the pipe 20A and the nozzle 22B to stop the injection of the coolant liquid 90A from the spray nozzle 12 and the nozzle 22B. Then, the user takes out the plurality of banju 21 cooled during the cooling time from the processing tank 22 of the heating system 20 together with the liquid cooling device 10, disassembles them, and takes out the object to be heated 90.

According to the liquid cooling device 10 having each of the above-described configurations, the coolant 90A ejected by the spray nozzle 12 is hindered from reaching the coolant 90A from outside the overlap of the banju 21, the peripheral wall 21C of the banju 21. It is injected in the internal space 21D inside the. Therefore, according to the liquid cooling device 10, it is possible to apply the coolant liquid from the inside of the overlap of the banju 21 to the object to be heated 90 placed on the banju 21 stacked in the vertical direction.

Further, according to the liquid cooling device 10, the coolant liquid 90A is sprayed with a long flat spray pattern 12B in the direction along the bottom 21A of the banju 21 in the above-mentioned hollow state (left-right direction as seen in FIG. 5). .. Therefore, according to the liquid cooling device 10, the proportion of the coolant liquid 90A scattered in the route deviated upward or downward is reduced in the coolant liquid 90A injected between the plurality of banju 21.

Further, according to the liquid cooling device 10, the coolant liquid 90A is sprayed from the plurality of spray nozzles 12, so that the range reached by the coolant liquid 90A becomes wider.

That is, according to the liquid cooling device 10, when the coolant liquid 90A is applied to the heated object 90 placed on the banju 21 to cool it, the places where the coolant liquid 90A is difficult to reach are reduced to cool the heated object 90. It is possible to avoid deterioration of efficiency and thus improve the cooling efficiency of the object to be heated 90.

The present inventor has confirmed the effectiveness of the liquid cooling device of the present invention by a control experiment using the heating system 20 and the liquid cooling device 10 shown in FIG. Hereinafter, this control experiment will be described.

First, the present inventor heated and cooled the object to be heated by using the heating system 20 and the liquid cooling device 10 according to the above-mentioned example of the usage method of the liquid cooling device 10, and set this as an experimental group. .. Next, the present inventor uses the same heating system 20 and liquid cooling device 10 as in the experimental group, and uses only the nozzle 22B of the heating system 20 to cool the object to be heated 90. The object to be heated 90 was heated and cooled, and this was used as a control group. Then, the present inventor confirmed the effectiveness of the present invention by photographing the thermography of the object to be heated 90 which entered the banju 21 immediately after dismantling for each of the experimental group and the control group and comparing these thermography. bottom.

Here, in each of the experimental group and the control group, the food in which the seasoned fried tofu is placed in a pouch bag is designated as the heated object 90, and the heated object 90 and the bag 21 are kept at a constant temperature of 95 [° C.]. Heated. Further, in the experimental group, the object to be heated 90 is heated by injecting the coolant liquid 90A from both the nozzle 22B provided in the processing tank 22 of the heating system 20 and the spray nozzle 12 of the liquid cooling device 10. And the nozzle 21 was cooled for 20 minutes. Further, in the control group, the heated object 90 and the banju 21 were cooled for 20 minutes by injecting the coolant liquid 90A only from the nozzle 22B provided in the treatment tank 22 of the heating system 20.

The experimental results of the above control experiment are shown in FIGS. 6 and 7. Here, FIG. 6 shows the thermography of the heated object 90 in the experimental group, and FIG. 7 shows the thermography of the heated object 90 in the control group. Further, in FIGS. 6 and 7, the high temperature region 91 of 35 [° C.] or higher is shown in white, and the low temperature region 92 of 25 [° C.] or lower is shown in gray.

According to the above control experiment, the object to be heated 90 in the experimental group was cooled to a low temperature region 92 of about 25 [° C.] or less, although a high temperature region 91 of 35 [° C.] or more remained in a part (FIG. 6). On the other hand, almost all of the objects to be heated 90 in the control group were in the high temperature region 91 of 35 [° C.] or higher, and there was almost no low temperature region 92 of 25 [° C.] or lower (see FIG. 7). From this, it can be said that the cooling efficiency of the object to be heated is improved by applying the liquid cooling device of the present invention.

The present invention is not limited to the appearance and configuration described in the above-described embodiment, and various modifications, additions, and deletions can be made without changing the gist of the present invention. For example, various forms such as the following can be implemented.

(1) The configuration of the liquid cooling device is not limited to the configuration of the liquid cooling device 10 shown in FIG. 2, and can be appropriately changed. Here, the liquid cooling device 30 according to the modified example shown in FIGS. 8 and 9 has a configuration in which a plurality of spray nozzles 32 are provided in a pipe 30A connected in an annular shape. Further, each spray nozzle 32 injects the coolant liquid 90A in a cone-shaped spray pattern that also spreads in the vertical direction, thereby cooling the banju 21 located above and below the spray nozzle 32 together. To realize. Further, in the liquid cooling device, a flexible pipe is pierced through a punching metal punching hole 21E (see FIG. 3) forming the bottom 21A of the banju 21, and a coolant liquid is sprayed from a full-scale sprinkler type nozzle provided in this pipe. It may be something to do.

(2) Since the spray nozzle 12 of the liquid cooling device 10 shown in FIG. 2 has the same configuration, the injection amount of the coolant liquid 90A in each of the metal tubes 10A, 10B, and 10C is substantially uniform. However, the liquid cooling device is provided with a plurality of types of spray nozzles having different amounts of coolant liquid to be sprayed, and the coolant liquid is intensively sprayed into a place where heat is likely to be trapped in the ban, thereby improving the cooling efficiency. It may be a new one. In addition, the liquid cooling device is provided with a nozzle that injects steam for heating the object to be heated in the internal space of the banju, so that it is possible to realize an additional function of improving the heating of the object to be heated in the banju. It may be.

(3) The configuration of the banju, which is a tray on which the object to be heated is placed, is not limited to the configuration of the banju 21 (see FIG. 3) described above. That is, for example, the direction and length of the elongated hole through which the pipe of the liquid cooling device is pierced at the bottom of the banju can be arbitrarily changed. Further, when the pipe of the liquid cooling device is capable of punching through the punching metal hole forming the bottom of the banju, a banju having no elongated hole at the bottom can be adopted.

(4) The tray on which the object to be heated is placed is not limited to a tray in which the object to be heated can be stacked in the vertical direction. That is, for example, when a tray rack that allows trays to be stacked in the vertical direction with a gap is provided in the processing tank of the heating system, a tray of any shape that can be set in this tray rack. Can be used.

(5) The coolant does not have to be cooling water. That is, any kind of chemical solution such as a detergent or a disinfectant solution can be used as the coolant solution.

10 Liquid cooling device 10A Metal pipe (tube)
10B metal pipe (tube)
10C metal tube (tube)
11 Connector 11A Faucet Socket 11B Leg 12 Spray nozzle (nozzle)
12A Injection port 12B Spray pattern 20 Heating system 20A Piping 21 Banju (tray)
21A Bottom 21B Long hole (through hole)
21C Peripheral wall 21D Internal space 21E Drilling hole 21F Drilling hole 22 Treatment tank 22A Stand 22B Nozzle 30 Liquid cooling device 30A Tube 32 Spray nozzle 90 Heated object 90A Coolant liquid 91 High temperature range 92 Low temperature range

Claims (4)

It is applied to a heating system that heats the object to be heated in a state where a plurality of trays on which the object to be heated is placed are stacked in the vertical direction on a bottom having a through hole penetrating in the vertical direction, and a coolant is applied. Thereby, in the liquid cooling device for cooling each object to be heated,
A pipe in which the coolant liquid is circulated and a state in which each of the through holes in a plurality of trays stacked in the vertical direction is slippery is realized.
A nozzle provided in the pipe and having an injection port for injecting the coolant liquid in a state of being directed between a plurality of the trays stacked in the vertical direction in the untidy state.
Is equipped with
Liquid cooling device. The liquid cooling device according to claim 1.
When the tray is provided with a peripheral wall that is erected along the outer periphery of the bottom and obstructs the passage of the coolant liquid, and an internal space surrounded by the peripheral wall.
The nozzle is located in the internal space in the unscrewed state.
Liquid cooling device. The liquid cooling device according to claim 1 or 2.
The nozzle is a spray nozzle having a flat spray pattern that is long in the direction along the bottom of the tray in the unfinished state.
Liquid cooling device. The liquid cooling device according to any one of claims 1 to 3.
A plurality of the nozzles having different reach of the injected coolant liquid are provided.
Liquid cooling device.

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