JP4012954B2 - Liquid heat treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a heat treatment of a liquid that heats or cools a raw low-temperature liquid containing a relatively large solid or a cooked high-temperature liquid in an aseptic condition, or cools after heat sterilization, such as a sauce or retort curry. Relates to the device.
[0002]
[Prior art]
The present applicant has previously applied for and obtained a patent for an “indirect heating device” (Japanese Patent Publication No. 7-267 58 ) for indirectly heating and sterilizing a liquid. Since this apparatus heats a liquid while stirring it with a fixed stirrer installed in a heating tube, it has a feature that enables uniform heating efficiently.
[0003]
[Problems to be solved by the invention]
However, in the case of liquids in which solids such as meat pieces or utensils are mixed, there are problems that they are caught by a fixed stirrer and the liquid path is closed, or the liquid remains in the fixed stirrer part. Accordingly, an object of the present invention is to provide a liquid heat treatment apparatus that solves the above-mentioned problems.
[0004]
[Means for Solving the Problems]
[0005]
In order to achieve the above object, claim 1 provides a sealed tank for storing the liquid fed by the liquid feeding means, a stirring means for stirring the liquid in the sealed tank, and a number of vertical pipes provided in the lower part of the sealed tank. A liquid heating means comprising a multi-tube heat exchanger having a tube, and a liquid heating means for heating the liquid with a heating fluid flowing down in the vertical pipe and flowing through the outer periphery of the liquid stored in the sealed tank; and provided below the liquid heating means Liquid cooling means comprising a multi-tubular heat exchanger having a number of vertical tubes and liquid cooled by the cooling water flowing down the outer periphery of the liquid heated by the liquid heating means and flowing through the outer periphery thereof , the vertical pipe of the vertical pipe and the liquid cooling unit in the liquid heating hand stage provided to communicate with each further comprises a sealed hopper for collecting the liquid flowing down the vertical tube of the liquid cooling means provided in the lower part of the liquid cooling means, closed hopper The liquid collected in the tank is discharged by the discharge pump And a liquid discharging means.
[0006]
Claim 2 is a multitubular type having a sealed tank for storing the liquid fed by the liquid feeding means, a stirring means for stirring the liquid in the sealed tank, and a number of vertical tubes provided at the lower part of the sealed tank. A liquid heating means that consists of a heat exchanger and flows down in the vertical tube and heats the liquid with a heating fluid flowing through the outer periphery of the liquid, and in a number of vertical tubes provided below the liquid heating means A liquid high temperature holding means for flowing down the liquid heated by the liquid heating means and holding the liquid at the temperature of the heated liquid, and a multi-tube heat exchanger having a number of vertical tubes provided below the liquid high temperature holding means Liquid cooling means for cooling the liquid with cooling water flowing down in the vertical pipe and flowing through the outer periphery of the vertical pipe, the vertical pipe of the liquid heating means, the vertical pipe of the liquid high temperature holding means, and the vertical pipe of the liquid cooling means Are provided in communication with each other, and further under the liquid cooling means. A sealed hopper for collecting the liquid flowing down the vertical tube of the liquid cooling means provided, characterized by comprising a liquid discharge means for discharging the collected liquid discharge pump in a closed hopper.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, a liquid containing solids such as meat pieces or vegetables, or a highly viscous liquid can be suitably processed, but a normal liquid can also be processed. A liquid heat treatment apparatus according to an embodiment of the present invention will be described below with reference to FIGS. The liquid heat treatment apparatus includes a liquid feeding means A, a sealed tank 4 for storing the liquid fed thereby, a liquid stirring means B for stirring the liquid stored in the sealed layer 4, and a lower portion of the sealed layer 4 A multi-tube heat exchanger 8A having a plurality of vertically installed vertical tubes 8d, and a liquid heating means C for heating the liquid, and a plurality of vertical installations provided below the liquid heating means C. A multi-tube heat having a liquid high-temperature holding means D composed of a multi-tube heat exchanger that causes liquid to flow down into the vertical pipe 12d, and a plurality of vertically installed vertical tubes 14a provided below the liquid high-temperature holding means D. The exchangers 14A, 14B, 14C, and 14D are provided in four layers in a stacked state, and the liquid cooling means E that cools the liquid and the liquid that flows down in the vertical pipe of the liquid cooling means E provided below the liquid cooling means E are collected. Sealed hopper 17 and liquid collected in sealed hopper 17 And the liquid discharge means F for exhausting discharged by the discharge pump, comprising a controller G.
[0008]
The present invention is not limited to the apparatus of the above-described embodiment that heats a liquid, maintains the temperature for a certain period of time, sterilizes, and then cools. The present invention includes a device that heats the liquid and then cools it. In this case, the device is obtained by removing the liquid high temperature holding means D from the device shown in FIG. The vertical tubes 8d, 12d, and 14a are preferably copper tubes having a high heat conduction ratio, but are preferably stainless steel tubes from the viewpoint of durability and rust prevention.
[ 0009 ]
The liquid feeding means A is a rotary that can block curry cooked in a cauldron (not shown) and other solid-containing liquid into the open hopper 1 to block the outside air and crush the solid in the liquid. The feed pump 2 such as a pump is fed to the upper part of the closed tank 4 of the liquid stirring means B through the pipe 3. The feed pump 2 supplies a predetermined flow rate of liquid.
[ 0010 ]
The liquid stirring means B has ring flanges 4b and 4c attached to the upper and lower ends of the large-diameter cylinder 4a of the sealed tank 4, and a top plate 4d is put on the upper ring flange 4b and fastened and fixed with bolts and nuts 4e. The ring flange 4c is fastened and fixed by the upper end plate 8b constituting the sealed tank 8 of the liquid heating means C and the bolt / nut 4f to form a closed space. The stirring blade 6 is fixed to the lower end of the rotating shaft 5 whose upper end is pivotally supported at the center of the end plate 4d, and the output shaft of the motor 7 attached to the upper surface of the end plate 4d and the upper end of the rotating shaft 5 are fixedly connected. ing. The stirring blade 6 is normally driven at a constant rotational speed. The stirring blade 6 stirs the liquid in the sealed tank 8 to prevent solidification of the liquid at the corners and distributes solids in the liquid uniformly, and prevents the solids from depositing on the end plate 8b. It plays the role of supplying uniformly into the vertical tube 8d of the liquid heating means C.
[ 0011 ]
The liquid heating means C includes a multi-tube heat exchanger 8A having a large number of vertical tubes 8d. The multi-tube heat exchanger 8A includes end plates 8b and 8c at the upper and lower ends of the large-diameter tube 8a, and the upper and lower ends of the small holes provided in the plates 8b and 8c are connected to the sealed tank 4 and a vertical tube 12d to be described later. A large number of communicating vertical pipes 8d are installed. And in order to form the meandering space 8n which meanders the space of the outer periphery of the vertical pipe 8d in the vertical direction, the partition plates 8e are horizontally installed on the inner wall of the large-diameter tube 8a, and are provided on the multi-stage partition plates 8e. A vertical tube 8d is inserted through the small hole. In addition, an indirect heating medium inlet 8f and an indirect heating medium outlet 8g are installed at the ends of the lowermost part of the meandering space 8n and the uppermost part of the space 8n of the large diameter cylinder 8a, and further downstream of the vertical pipe 8d. A temperature sensor 9 is attached to the side. Further, a drain 8h is installed at the lower part of the large diameter cylinder 8a. As the indirect heating medium used in the liquid heating means C, for example, hot water or steam is used. They are introduced into the sealed tank 8 from the indirect heating medium inlet 8 f through the control valve 11 from the line 10. The heating medium flows through the meandering space 8n of the large-diameter cylinder 8a and is discharged from the indirect heating medium outlet 8g. Thereby, the vertical pipe 8d is heated with an indirect heating medium, and the liquid flowing through the vertical pipe 8d is indirectly heated.
[ 0012 ]
The controller G receives a signal from the temperature sensor 9 that detects the temperature of the liquid downstream of the vertical tube 8d, compares it with the target value, adjusts the supply amount of the indirect heating medium by the control valve 11, and controls the heating temperature. I do. The liquid heating means C allows the liquid containing the solids to flow through the numerous vertical tubes 8d so that the liquid does not accumulate in the tubes 8d and flows down by its own weight, and the heating water flowing through the outer periphery of the vertical tube 8d meanders. The flow is an ascending flow, which is a counter flow with respect to the liquid, and has a structure in which high thermal efficiency is obtained.
[ 0013 ]
The liquid high temperature holding means D is provided with end plates 12b and 12c at the upper and lower ends of the large-diameter tube 12a, and provided with a large number of vertical tubes 12d having upper and lower ends released in small holes provided in the end plates 12b and 12c. The space on the outer periphery of the vertical tube 12d in the cylinder 12a is sealed, and heat exchange with the outside air is minimized. The upper ends of the multiple vertical tubes 12d of the liquid high temperature holding means D communicate with the multiple vertical tubes 8d of the liquid heating means C in correspondence with each other as described above, and continue to guide the liquid to flow down. On the other hand, the lower end communicates with a vertical tube 14a described later. Since the liquid flows down in the vertical pipe 12d, there is no possibility that the liquid will accumulate in the pipe 12d. The temperature sensor 9 may be provided on the downstream side of the vertical pipe 12d. The liquid high temperature holding means D is formed by joining the upper end plate 12b and the lower end plate 8c of the liquid heating means C and fastening them with bolts and nuts 13, and the temperature of the liquid flowing down in the vertical tube 12d is adjusted. It plays the role of sterilizing by keeping.
[ 0014 ]
The liquid cooling means E includes, for example, four-stage multi-tubular heat exchangers 14A to 14D including a plurality of vertical tubes 14a stacked and connected by bolts and nuts 15a to 15c. The uppermost multi-tubular heat exchanger 14D is stacked below the liquid high temperature holding means D and connected to the means D by bolts and nuts 15c. A large number of vertical tubes 14a of the four-stage multitubular heat exchangers 14A to 14D communicate with each other, and communicate with the large number of vertical tubes 12d of the liquid high temperature holding means D as described above. Subsequently, the liquid is guided to flow down. On the other hand, the lower end portion of the vertical pipe 14a communicates with a sealing hopper 17 described later.
[ 0015 ]
The multitubular heat exchangers 14A to 14D have substantially the same structure as the multitubular heat exchanger 8A of the liquid heating means C. That is, the meandering space 14m is formed by the partition plate 14n, and an indirect heating medium flows through the space 14m to indirectly heat the liquid. The cooling water outlet 14c of the first multi-tubular heat exchanger 14A located at the bottom and the cooling water inlet 14d of the second multi-tubular heat exchanger 14B thereabove connect the first three-way valve 16a. Connected through. Then, the cooling water outlet 14e of the second multi-tubular heat exchanger 14B and the cooling water inlet 14f of the third multi-tubular heat exchanger 14C thereon are connected via the second three-way valve 16b. ing. Further, the cooling water outlet 14g of the third multi-tube heat exchanger 14C and the cooling water inlet 14h of the fourth multi-tube heat exchanger 14D thereon are connected via a third three-way valve 16c. ing. Each of the multi-tube heat exchangers 14A to 14D has a drain 14j.
[ 0016 ]
The liquid discharge means F collects the liquid flowing down the vertical pipe 14a of the first multitubular heat exchanger 14A in the hermetic hopper 17, can block the upstream and downstream, and does not possibly crush solids in the liquid. A feed pump 18 such as a rotary pump is configured to feed a filling and packaging machine (not shown) through a pipe 19. The hermetic hopper 17 is provided with a cooling jacket 20 that covers the conical surface as necessary. The cooling jacket 20 is provided with a cooling water inlet 20a at the lower part and a cooling water outlet 20b at the upper part on the opposite side. The controller H receives a signal from the pressure sensor 21 that detects the pressure in the hermetic hopper 17 and compares it with the target value pressure. When the signal is high, the flow rate of the feed pump 18 is increased. Control to reduce the flow rate. The ring flange 17a of the hermetic hopper 17 and the end plate 14k of the multi-tube heat exchanger 14A are placed on a mount 26 and connected and fixed by bolts and nuts 15e.
[ 0017 ]
The cooling water outlet 20b is communicated with the cooling water inlet 14b of the first multi-tubular heat exchanger 14A through the pipe 22, and the cooling water inlet 20a is connected to the pump 23 and the cooling device 24 via the pipe 22. The inlet of the cooling device 24 is connected to the return ports 16d, 16e, 16f of the first to third three-way valves 16a, 16b, 16c and the cooling water outlet 14i by a return pipe 25. The water cooled to, for example, about 10 ° C. by the cooling device 24 is fed by the pump 23 and flows into the cooling jacket 20 to cool the liquid in the sealed hopper 17. The liquid which flows through the outer periphery of the vertical tube 14a of the tubular heat exchangers 14A to 14D and cools down in the vertical tube 14a is cooled.
[ 0018 ]
When the high temperature holding time is too short in the liquid high temperature holding means D, the fourth multitubular heat exchanger 14D can be used as the liquid high temperature holding means. In this case, the third three-way valve 16c is operated so that the return port 16f and the cooling water outlet 14g of the third multi-tube heat exchanger 14C communicate with each other, and the first to third multi-tube heat The exchangers 14A, 14B, and 14C are brought into a communication state via the first and second three-way valves 16a and 16b, and the cooling water is returned to the return pipe 25 on the way from the return port 16f of the third three-way valve 16c. When the multi-tube heat exchanger 14C is also used as the liquid high temperature holding means, the second three-way valve 16b also has a return side port 16e and a cooling water outlet 14l of the second multi-tube heat exchanger 14B. The cooling water is returned to the return pipe 25 from the return port 16e of the second three-way valve 16b. Further, when the multi-tube heat exchanger 14B is also used as the liquid high temperature holding means, the first three-way valve 16a also communicates the return side port with the connection port of the first multi-tube heat exchanger 14A, The cooling water is returned to the circulation path from the return port of the first three-way valve 16a. Therefore, this liquid cooling means E includes four stages of multi-tubular heat exchangers in a stacked state, and the remaining heat exchangers 14B, 14C, 14D excluding at least one stage from the lower side are used as the liquid high temperature holding means. It can also be used selectively.
[0019]
[Action]
A liquid in which solids such as meat pieces or utensils are mixed is first stored in the open hopper 1, and then supplied to the sealed tank 4 by the liquid supply pump 2. Therefore, the liquid flows down in the vertical tube 8d of the liquid heating means C while being stirred so as not to separate from the solid matter, and is sterilized by heating with the liquid heating means C. Thereafter, the liquid is held at a high temperature by the liquid high temperature holding means D while flowing down through the vertical pipes 12 d and 14 a, then cooled by the liquid cooling means E, and reaches the sealed hopper 17. Thereafter, it is sent to the next process by the liquid supply pump 18. In the liquid heating means, the temperature of the liquid is controlled by the temperature controller G, and the pressure is controlled by the controller H, so that the liquid is always filled in the vertical tubes 8d, 12d, and 14a.
[0020]
【The invention's effect】
As described above, according to claim 1 in this application, the reservoir fluid is flowing down, during flow, the liquid can be heated and then cooled, so that in particular fillings containing sauce or retort curry, comparison As raw cryogenic liquid containing large solids or cooked hot liquid flows down in the vertical pipe due to gravity action, it saves energy and there is no risk of a large amount of liquid remaining in the pipe, making it economical compared to conventional devices It is. Furthermore, according to claim 2 , the liquid can be accumulated and flowed down, and during the flow, the liquid can be heated and kept at a certain temperature for sterilization and then cooled, particularly like a sauce or a retort curry. , Raw cryogenic liquid containing relatively large solids or cooked hot liquid flows down the vertical pipe due to gravity action, saving energy, and there is no fear that a large amount of liquid will remain in the pipe, compared to conventional devices Economical. Furthermore, since nothing is installed in the vertical pipe, the entire liquid can be discharged after the work is completed, and then the vertical pipe can be cleaned simply by sending water.
[0021]
[Brief description of the drawings]
FIG. 1 is a front view of a liquid heat treatment apparatus.
FIG. 2 is an enlarged front sectional view of a liquid heating means, a liquid heating means, and a liquid high temperature holding means section in a liquid heat treatment apparatus. FIG. 3 is an enlarged front sectional view of a liquid cooling means and a liquid cooling means section in a liquid heat treatment apparatus. Figure [Explanation of symbols]
A Liquid feeding means B Liquid stirring means C Liquid heating means D Liquid high temperature holding means E Liquid cooling means F Liquid discharging means 4 Sealed tank 6 Stirring blade 8d Vertical tube 12d of liquid heating means Vertical tube 14a of liquid high temperature holding means Liquid cooling Means vertical pipe 17 Sealed hopper 18 Discharge pump

Claims (3)

It consists of a sealed tank for storing the liquid fed by the liquid feeding means, a stirring means for stirring the liquid in the sealed tank, and a multi-tube heat exchanger having a number of vertical tubes provided at the bottom of the sealed tank. A multi-tube heat having a liquid heating means for heating the liquid stored in the sealed tank in a vertical pipe and heating the liquid with a heating fluid flowing through the outer periphery thereof, and a number of vertical pipes provided below the liquid heating means. And a liquid cooling means for cooling the liquid heated by the liquid heating means and cooling the liquid with cooling water flowing through the outer periphery of the liquid heating means. the vertical pipe is provided to communicate with each addition, the liquid to be discharged and sealed hopper to collect the liquid flowing down the vertical tube of the liquid cooling means provided in the lower part of the liquid cooling means, the collected liquid in a sealed hopper by the discharge pump Having a discharge means Heat treatment apparatus of the liquid to symptoms. It consists of a sealed tank for storing the liquid fed by the liquid feeding means, a stirring means for stirring the liquid in the sealed tank, and a multi-tube heat exchanger having a number of vertical tubes provided at the bottom of the sealed tank. Liquid heating means for heating the liquid stored in the hermetic tank in the vertical tube and heating the liquid with a heating fluid flowing through the outer periphery of the liquid, and a number of vertical tubes provided in the lower part of the liquid heating means with the liquid heating means. A liquid high temperature holding means for letting the heated liquid flow down and holding the liquid at the temperature of the heated liquid, and a multi-tubular heat exchanger having a number of vertical tubes provided below the liquid high temperature holding means , Liquid cooling means for cooling the liquid with cooling water flowing down and flowing through the outer periphery thereof, and the vertical tube of the liquid heating means, the vertical tube of the liquid high temperature holding means, and the vertical tube of the liquid cooling means communicate with each other. provided Te, further, a liquid which is provided in the lower part of the liquid cooling means A sealed hopper for collecting the liquid flowing down the vertical tube of the cooling means, the heat treatment apparatus of the liquid, characterized by comprising a liquid discharge means for discharging the collected liquid discharge pump in a closed hopper.  The liquid cooling means includes two or more stages of multi-tubular heat exchangers in a stacked state, and the remaining liquid cooling means excluding at least the first stage liquid cooling means from the lower side can be selectively used as the liquid high temperature holding means. The liquid heat treatment apparatus according to claim 3, wherein the liquid heat treatment apparatus is configured.

Images