JPH037534A - Device for treating food raw material under pressure - Google Patents

Abstract

PURPOSE:To make it possible to operate a device under pressure conditions of thousands kgf/cm<2> by providing a pressure medium feeding and pressure feeding device and providing a pressure vessel capable of feeding a material to be heat-treated and free piston packed into the vessel. CONSTITUTION:A required definite amount of food raw material containing an animal protein consisting of fish meat as a main ingredient is fed into each chamber 21a, 21b and 21c. Then a pressure medium in a pressure medium tank 12 is fed from each through hole 31a to 31c of each closing member 3a to 3c through a pressure control valve 11 and opening and closing valve 9 into each chamber 6a to 6c in required pressure using a pressure pump 8 by a pressure medium feeding and pressure controlling device 7. As a result, free pistons 4a to 4c are pressurized and moved and pressure action is exerted to each material to be treated in chambers 21a to 21c and simultaneously material to be treated in chambers 21a to 21c of each pressure vessel 1a is subjected to heating action in parallel with the pressure action.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for melting food materials under pressure, particularly food materials whose main component is animal fluorescent material such as fish meat.

(Prior art) Conventionally, fish meat, etc., has been used as processed products such as paste products such as kamaboko and chikuwa, or as feed, etc. as powdered heat-denatured fish meat, known as fish meal. The technology has mainly been developed with temperature as the physical state variable used in these processes. However, recently, food processing technology that utilizes protein denaturation under high pressure has been developed, and it has attracted attention as a new technology, and various applications are being attempted. For example, a two-screw extruder in which a pair of screw shafts or blade shafts are rotatably arranged side by side in cylinders with different bicylindrical cross sections is recognized as an example, but in the case of this device, temperature, stirring, kneading,
Due to mechanical effects such as shearing, denaturation of the food material,
The pressure is not intentionally controlled, but is unstable and changes depending on the physical properties of the material.For example, 1 (101
(It was not possible to apply a high pressure such as 10O/c4.

On the other hand, the presence of pressure is effective in food processing, especially in the processing of food materials whose main component is animal protein, such as fish meat, as disclosed in JP-A-62-40255 and JP-A-6.
This is as disclosed in Japanese Patent No. 2-40267. That is,
For minced fish meat or heat-denatured fish meat, add 1 (10 to 2)
It is disclosed that a melt can be obtained by applying heat treatment at 10°C for 1 to 5 minutes, and it is noteworthy that unprecedented effects are brought out, especially in the presence of pressure. This is a worthy point.

(Problems to be Solved by the Invention) Among the above-mentioned conventional techniques, the present invention is a method for obtaining a molten state by heating and pressurizing a food material whose main component is animal protein, such as fish meat. The present invention is a concrete device that realizes this on a laboratory or industrial mass production scale, which is capable of stably and efficiently melting under pressure, and which also improves the pressure conditions from conventional ones. Number 1
without stopping at the level of 0 kg f/c+a,
Even if it is raised to the level of number 1 (101 (10O/c4),
The present invention is intended to provide a pressurized melting device that can operate stably, and also to provide a processing device suitable for food processing that utilizes the synergistic effect of temperature and pressure.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention supplies a workpiece to one chamber of a pressure vessel divided into two chambers by a free piston, and pressurizes the other chamber. It is designed so that a medium can be supplied and pressurized, and at the same time, a thermal effect can be exerted on the object to be treated. Specifically, it consists of a pressure vessel and a free piston filled in the pressure vessel, and a pressure medium supply and pressure adjustment device is connected to one chamber separated by the piston of the pressure vessel. In addition, the other chamber is characterized in that the object to be processed can be supplied thereto, and a heat treatment means for the object to be processed in the pressure vessel is provided.

Furthermore, the plurality of pressure vessels can be connected to a common pressure medium and pressure regulating device, and the heat treatment means may include a heating and/or cooling liquid circulation means provided with a jacket enclosing the pressure vessels. I can do it.

At least one of the free pistons may be of a pressure increasing type.

Further, when the object to be processed is in a fluid state, it is preferable to supply the object to be processed into another chamber of the pressure vessel by a pump, and the on-off valve provided in the supply line is set to the above-mentioned opening/closing position. It is preferable to place it near the rest of the room.

Furthermore, the pressure medium supplied from the pressure medium supply and pressure regulating device to one chamber of the pressure vessel can be water, and furthermore, the pressure medium supplied from the pressure medium supply and pressure regulating device to one chamber of the pressure vessel The free piston can be moved by the supplied pressure medium, and the processed material in the other chamber can be taken out.

(Function) According to the above-mentioned technical means of the present invention, the material to be treated is supplied to the other chamber of the pressure vessel separated by the free piston, and the pressure medium is supplied to the corresponding one chamber. By supplying the pressure medium adjusted to the required pressure value by the pressure regulating device, the workpiece is subjected to pressure treatment by pressurizing movement of the free piston, and at this time, the workpiece is heated and/or cooled by the heat treatment means. By processing, the object to be processed is simultaneously subjected to pressure and heat action, and it is possible to arbitrarily achieve processing results such as melting under pressure. Therefore, by automating the supply of the material to be treated into the pressure vessel, automating the supply of pressure medium, the pressure control in the pressure adjustment device and the heat treatment means, and the control of the heating and/or cooling temperature, stable It is possible to process food materials, etc. under homogeneous pressure and temperature processing conditions and on a laboratory or industrial mass production scale. heating,
When pressure-processing a food material whose main component is animal protein, such as fish meat, into a molten product, especially if the heating temperature exceeds 1 (10"C), there may be Since the contained water boils, it is necessary to heat and cool it under appropriate pressure in order to suppress this boiling, but such operations can be carried out reliably and easily.

Further, since the two chambers are formed with the free piston apart, there is no mixing or contact between the pressure medium and the object to be treated, which is advantageous in that safety and cleanliness are ensured.

Since the plurality of pressure vessels are jointly connected to a common pressure medium supply and pressure adjustment device, uniform and simultaneous pressurization of the objects to be treated in each of the plurality of pressure vessels is possible. Therefore, individual pressure vessels can be made smaller and thinner, heat transfer properties are improved, and heating and/or cooling by heat treatment means can be performed efficiently.

In addition, in the present invention, as a heat treatment means, a liquid circulation device for heating liquid and cooling liquid is used, which is capable of heating and/or cooling and is equipped with a jacket that covers the pressure vessel.
First of all, the heat treatment is not just heating, but also heating ranging from warm to hot range, and cooling ranging from negative temperature range. A wide range of cooling operations can be performed, appropriate heat treatment operations can be performed on the object to be treated in any pattern, and since the heating liquid or cooling liquid is circulated, the necessary heat treatment can be carried out reliably and easily. Temperature control is also easy.

In addition, when the material to be processed is in a fluid state, it can be fed to the other chamber of the pressure vessel using a pump, so that the material to be processed, for example in the form of slurry, can be smoothly and automatically transferred to a large number of pressure vessels. It is easy to supply, easy to achieve mass production objectives, and can be processed quickly.

Furthermore, in the present invention, the supply of the workpieces to the other chamber is regulated by the on-off valve, and the opening/closing position of the on-off valve is provided in a part of the other chamber close to the room, whereby the workpieces housed in the same chamber are When applying a heat treatment means to an object, it is possible to ensure the homogeneity of the heat action.

In addition, since the pressure medium supplied from the pressure medium supply and pressure adjustment device to one chamber of the pressure vessel is water, the pressure medium adheres to the inner surface of the pressure vessel as the free piston moves, and the other chamber Since there is a possibility of contact with the objects to be processed stored in the chamber, this is useful in terms of preventing this and protecting the cleanliness of the objects to be processed.

In addition, by supplying pressure medium to one chamber of the pressure vessel from the pressure medium supply and pressure regulating device, a free piston is moved by the pressure medium to move the processed material existing in the other chamber. The material to be processed can be easily and easily removed from the pressure vessel without having to open and close the high-pressure pressure vessel, contributing to the automation of a series of processing operations and reducing the properties can be improved.

Since at least one of the free pistons is of a pressure increasing type, the object to be treated can be subjected to pressure treatment using a pressure greater than the pressure of the pressure medium.

Furthermore, by providing a heating means in the jacket enclosing each pressure vessel, heating can be efficiently controlled without necessarily circulating a heat medium.

(Example) A suitable example of the device of the present invention will be described with reference to the drawings. 1st
The figure shows the first embodiment of the present invention, and three pressure vessels are shown as an example of a plurality of pressure vessels, but the number can be freely selected.
Each of the pressure vessels 1a, lb and IC is opened at both ends in the axial direction, and a closing member 2a is attached to each of these openings.
, 2b and 2C1 closing members 3a, 3b and 3c are respectively removably fitted and sealed via a seal structure or the like. These closing members 2a to 2c and 3a to 3c
In order to support these axial forces, it is necessary to use a screw-fitting structure for the pressure vessel opening as shown in the figure, or to make it easier to take in and out the objects to be treated. In consideration of this, for example, a stepped screw fitting structure or a support structure in which the reclosure members 2a to 2c and 3a to 3C are sandwiched between press frames can be used. Inside each pressure vessel 1a = 1c, free pistons 4a, 4b are provided with seal members 5a, 5b and 5c, respectively.
and 4c are slidably loaded. The piston 4a~
One chamber (pressure medium chamber) 6a, 6b and 6C in each pressure vessel 18 to IC divided into two chambers by 4C,
A pressure medium supply and a pressure regulating device 7 are connected in common.

The device 7 includes a circuit 3 that connects the pressure medium tank 12 and each of the through holes 31a, 31b, and 31c provided in each of the closing members 3a to 3C.
2, pressure pump 8, on-off valves 9, 10, pressure regulating valve 11
, a pressure reducing valve 11° is provided, the pressure medium in the pressure medium tank 12 is pressurized to a required pressure via the pressure pump 8 and the pressure regulating valve 11, and the pressure medium is transferred to the respective through holes 31a, 31b via the on-off valve 9. and 31c into the chambers 6a, 6b, and 6C, and it is also possible to maintain a predetermined pressure, further reduce the pressure, and recover it through the on-off valve 10. Regarding pressurized supply of the pressure medium at this time, if the pressure is relatively low, an electric pump can be used as shown in the example shown, but if the pressure is high, for example, a hydraulically driven pressure intensifier type pump may be used. is preferable, but is of course not limited. Furthermore, in the first embodiment, a jacket 13 is provided that commonly covers the pressure vessels la, lb, and lc, and a liquid circulation device 16 as a heat treatment means capable of heating and/or cooling is connected to the jacket 3. . The device 16 includes a circulation pipe 14. which connects the liquid tank 18 and the jacket 13. Is is provided with a circulation pump 17 and on-off valves 33, 34 and 35, and the liquid tank 18 is provided with a heater 19 and a cooler 20. Then, the heat medium liquid heated by the heater 19 and/or the refrigerant cooled by the cooler 20 are circulated within the jacket 13 and the liquid tank 18 by the circulation pump 17 and the pipe line 14.15, so that each pressure vessel 1a
+1b and lc are heated and/or cooled. In this case, the jacket 13 covers each of the pressure vessels 1a to 1c in common, and instead of encasing the pressure vessels 1a to 1c in common,
A jacket may be provided for each pressure vessel 1a, or if the heat treatment requires only heating, a structure may be adopted in which a current-carrying band heater or the like is attached to the outer periphery of each pressure vessel 1a=1c. In FIG. 1, 36 is a pressure gauge in the pressure medium supply and pressure adjustment device 7, and 37 is a pressure gauge in the liquid circulation device 16.
The pressure gauge is shown.

In addition, in the first embodiment, the structure is such that the material to be processed is supplied into the other chambers (material storage chambers) 21a, 21b, and 21c separated by the free pistons 4a to 4c in the pressure vessels 1a to IC. A supply pipe line 39 is provided between the workpiece supply tank 22, which is equipped with a defoaming (air bleed) vacuum pump 30 together with an on-off valve 38, the supply pump 23, and the on-off valve 24.
and through holes 40a and 40b provided in the on-off valve 24 and each of the closing members 2a to 2C of the pressure vessels 1a to IC, respectively.
and 40c, an inlet/outlet pipe 41 is commonly connected and communicated therewith. Therefore, the objects to be processed such as food materials stocked in the tank 22 are supplied from the supply pipe line 39 by the supply pump 23 to the respective through holes 40a to 40c via the on-off valve 24 and the inlet/outlet pipe line 41, The through holes 40a to 40c
On-off valves 25a each are sealed so as to be openable and closable.

By opening 25b and 25c, the object to be processed is supplied into each chamber 21a, 21b and 21c of each pressure vessel 1a to 1c. At this time, the above-mentioned on-off valves 25a to 25c
In, each closing portion 26a of the through holes 40a to 40c,
The installation positions of 26b and 26c (when closed) are in the chamber 21.
It is installed so as to be located close to the end of each chamber a to 21c. This is appropriate in ensuring the homogeneity of the heat action in the processing means on the accommodated processing objects.

Further, in the first embodiment, the on-off valve 24 and each closing member 2
Inlet/outlet pipe 4 connecting each through hole 40a to 40c of a to 2c
A collection pipe 42 is provided by extending one end of 1, and the pipe 42 is connected to a collection tank 27 for the processed material via an on-off valve 28.
A branch on-off valve 2 is connected to the on-off valve 2 immediately before the on-off valve 28.
9 is arranged. Therefore, each chamber 21 of each pressure vessel 1a to 1c is
When taking out and recovering the processed objects stored in a to 21c and subjected to the desired pressurization and heating or cooling processing to the outside of each pressure vessel, after the completion of the processing of the processed objects, All of the on-off valves 25a to 25c are set in the open position, and the respective through holes 40a to 40c are released from the closure by the closing parts 26a to 26c, and the pressure medium is supplied and the pressure adjustment device is supplied into the chambers 6a to 6c of the pressure vessels 1a to 1c. 7, the pressure medium at the required pressure is fed, and by the movement of each free piston 4a to 4c, the objects to be processed (processed) existing in the chambers 21a to 21c are moved through the through holes 40a to 40c, in and out. It is automatically taken out from the pipe 41 (the on-off valve 24 is closed at this time) into the recovery tank 27 via the recovery pipe 42 and the on-off valve 28,
It can be recovered. Since such a large pressure is not required to take out the processed product, the pressurizing pump 8 in the pressure medium supply and pressure regulating device 7 can be replaced with a separate large-capacity, low-pressure pump, for example. .

Further, in the first embodiment, as the on-off valves 25a to 25c provided in each of the closing members 28 to 2c of the pressure vessels 18 to 1c, a piston rond of a cylinder mechanism provided at one end of the closing members 28 to 2C is used to pressurize the lift up and down. Closing member 28 as a free
2c and 40a through 40c are shown;
It is also appropriate to provide it separately from c to prevent mixing with the processed material to be accommodated.

As the pressure medium used in the apparatus of the present invention may adhere to the inner surface of the pressure vessel and come into contact with the object to be processed as the free pistons 48 to 4c move, it is important to use the Although water is recommended as the most suitable water from the viewpoint of properties, it is not limited to this.

According to the first embodiment, a food material whose main component is animal protein, such as fish meat, is pressurized and processed as an object to be processed.
In order to produce a molten product by heat treatment, the material to be treated is introduced into the other chambers 21a to 21c of each pressure vessel 18 to 1c. At this time, if it is possible to freeze and solidify the material to be treated and introduce it into the chambers 21a to 21c by opening the closing members 28 to 2c, or to make it into a slurry, the material is in the state shown in FIG. Supply tank 22
Using the supply pump 23 from the on-off valve 24 and the on-off valve 2
5a to 25c, each through hole 4 of each closing member 2a to 2c
A required amount is supplied and filled into each chamber 21a, 21b, 21c from 0a to 40c.

Next, the pressure medium in the pressure medium tank 12 is supplied from the pressure medium supply and pressure adjustment device 7 to the pressure adjustment valve 1 using the pressure pump 8.
1 and the opening/closing valve 9, from each through hole 31a to 31c of each closing member 3a to 3c to each chamber 6a of pressure vessel 1a to 1c.
~6c under the required pressure. Then, the free pistons 48 to 4c are pressurized and moved by the pressure medium, and the chamber 2
A pressure action is exerted on each of the objects to be processed in 1a to 21c, and in the heating medium and/or cooling liquid circulation device 16, the heated liquid heated to a predetermined temperature by, for example, a heater 19 is passed through the circulation circuit 14.15 and the circulation pump. 17 into the jacket 13, each pressure vessel 1a
The objects to be processed in the chambers 21a to 21c are subjected to a heating action in parallel with the pressure action. Therefore, the material to be treated can be melted under pressure stably and efficiently in the high pressure range of several 1 (10 O/c1i) on an industrial mass production scale. The product is manufactured by supplying the pressure medium from the pressure medium supply and pressure adjustment device 7 to the chambers 6a to 6c by the pressurizing pump 8, thereby moving the free pistons 48 to 4c under pressure to close the closing members 28 to 2c. Side through holes 40a to 40c, in/out circuit 41
, the recovery tank 27 via the recovery circuit 42 and the on-off valve 28.
It is taken out and collected inside.

In the above-mentioned operation, in the first embodiment of the present invention, the heating and/or cooling liquid circulation device 16 not only performs heating, but also performs cooling treatment and pressure treatment over a negative temperature range on the object to be treated. Therefore, it is possible to provide an extremely wide variety of processing contents and results to the workpiece. For example, when processing objects containing moisture such as food materials, pressure and heat treatment is performed in a temperature range of 1 (10"C or higher), and when taking out the processing object, the temperature remains high and atmospheric pressure is applied. If the pressure is reduced to 100%, there is a risk that the water will boil and the physical properties will change. Due to the existence of It is possible to easily perform heat treatment that responds to changes in the combination of pressure and temperature, such as temperature rise control when the temperature drops above a certain amount, and it also allows for uniform and stable pressure and temperature patterns to be applied to multiple pressure vessels. This makes it possible to achieve a pressurized molten state.

FIG. 2 shows a second embodiment of the present invention, which is particularly suitable for a laboratory scale, and differs from the first embodiment in that each pressure vessel 1a, lb, lc has an independent jacquarite 3a.
, 13b, 13c, and the jacket 1
Heating heaters (preferably electric band heaters) 19a, 19b are provided on the outer periphery of 3a=13c, respectively.
.

19c and the upper closing members 2a, 2b, 2
The second embodiment is the same as the first embodiment except that it does not have a through hole for supplying the material to be processed and one free piston 4C is of a pressure increasing type. Therefore, the same components as in the first embodiment are given the same reference numerals as in FIG.
The characteristic parts will be explained in detail.

A liquid circulation device 16 as a heat treatment means capable of heating and/or cooling is connected to the jackets 13a, 13b, and 13c. This liquid circulation device 16 includes circulation pipes 14.14a, 14b, and 14c that connect the liquid tank 18 and each jacket 13a, 13b, and 13c.
A circulation pump 17 and on-off valves 33.34a, 34b, and 34c are provided at 15.15a, 15b, and 15c, and a cooler 20 is provided at the liquid tank 18. When heating the object to be processed, the on-off valve 34a,
34b, 34c are closed, jackets 13a, 13b,
The cooling medium confined within 13c is heated by the heaters 19a-19c, and the pressure vessels 1a-1c are individually heated indirectly through the thin layer of the medium.

Further, in the pressure vessel 1c, the cross-sectional area of one pressure medium chamber 6c is made larger than the cross-sectional area of the other to-be-processed storage chamber 21c, and the pressure-increasing free piston 4 has one large diameter and the other small diameter.
0 is fitted so as to be movable within a predetermined range, and the jacket 13c is disposed only on the outer periphery of the other processing object storage chamber 21c.

According to the second *embodiment, first, the closing members 28 to 2c are opened and the objects to be processed are introduced into the chambers 21a to 21c, and then the chambers 21a to 21c are sealed by the closing members 2a to 2c. , the pressure medium is supplied to the pressure medium chambers 6a to 6c by the pressure medium supply and pressure adjustment device 7, the free pistons 48 to 4c are moved, and the object to be processed is pressurized. And the on-off valve 34a
~34c are closed and the cooling medium jackets 13a~13c are closed.
The object to be processed is heated to a predetermined temperature via the medium by the heaters 19a to 19c under pressure and processed.

In addition, this processing operation is particularly important when the food material mainly composed of animal protein such as fish meat is made into a molten product, especially when the heating temperature exceeds 1 (10'C), as thermal denaturation may occur under normal pressure. Therefore, from the viewpoint of suppressing this, heating is performed prior to pressurization.

After the object to be processed is maintained at a predetermined pressure and temperature, the heating by the heaters 19a to 19c is stopped, the on-off valves 34a to 34c are opened, the circulation pump 17 is operated, and the cooling is carried out inside the jackets 13a to 13c. Circulating the medium for
The object to be treated is cooled under pressure and cooled to a temperature of at least 1 (10
When the temperature is below .degree. C. (when the temperature conditions do not cause boiling and evaporation of water under normal pressure), the pressure is reduced to atmospheric pressure and the material to be processed is taken out.

Note that the pressure medium supplied into the chambers 6a to 6c is as follows:
As the free pistons 48 to 4c move, the high pressure container 1
Water is most suitable because it may adhere to the inner walls of a to 1c and come into contact with food materials.

Further, as the cooling medium circulated in the jackets 13a to 13c, it is preferable to use silicone oil or the like since heat resistance is required.

The pressure adjustment, supply, etc. of the pressure medium are performed in the same manner as in the first embodiment.

Furthermore, in the second embodiment, the temperature of each pressure vessel 1a to 1c can be freely and quickly controlled by the individual heaters 19a to 19c, temperature variables can be individually set and changed, and the pressure increasing type The free piston 4c allows pressure variables to be changed arbitrarily, and a large amount of data can be obtained in a given experiment, making it possible to conduct experiments efficiently.

In the second embodiment, if electrically insulating oil or the like is used as the cooling medium, the heater 19a
~19c can be disposed within the jackets 13a~13c. In this case, when heating the object, the jacket 13
It is preferable to discharge the cooling medium within 8 to 13c.

In addition, since the second embodiment is constructed with an apparatus in mind for exploration and experimentation regarding the application of high-pressure processing to food materials, particular methods are required for loading and unloading the processed materials into and out of the high-pressure container 1a = 1c. However, as in the first embodiment, an automatic supply means for the fluid to be processed may be provided, and furthermore, the movement of the free pistons 4a and 4b may be used to automatically discharge the to be processed. It is possible.

FIG. 3 shows a third embodiment of the present invention, which differs from the second embodiment in an embedded heater 19a.

19b and 19c are attached to the outer circumferential walls of the pressure vessels 1a to IC, and jacket holes 38 to 13c are provided on the outer circumferential portions of the heaters 19a to 19c, and the other configurations are the same as in the second embodiment. . Therefore, the same effects as in the second embodiment can be expected in the third embodiment as well. In this third embodiment, it is preferable to discharge the cooling medium inside the jackets 13a to 13c when heating the object to be processed.

It should be noted that the present invention is not limited to the above embodiments, and can of course be applied to all kinds of food processing that can be carried out by heating and pressure treatment.

(Effects of the Invention) According to the pressure processing apparatus of the present invention, a solid-liquid mixed phase food material mainly composed of animal protein, such as fish meat, can be melted under pressure without being limited to the pressure conditions of conventional technology. , in that it is stable and efficient even in a high pressure range exceeding 10 O/cffl, and can be realized not only on a laboratory scale but also on an industrial mass production scale.
It has excellent features and advantages. In particular, in the present invention, two chambers are separated by a free piston within a plurality of pressure vessels, and a pressure medium supply and pressure adjustment device is connected to one chamber,
By making it possible to supply the object to be treated to the other chamber and providing heat treatment means for the object to be treated in the pressure vessel, pressurization and heat treatment can be performed simultaneously under the same conditions in each pressure vessel. Compact, small and thin,
Improves heat transfer from the outside, improves heating and cooling efficiency, and provides accurate and quick heat treatment results. Since the inside of the pressure vessel is separated by a free piston, the structure is simpler than the conventional cylinder piston tamp.Since there is no piston rod, the effective area can be expanded, and there is no risk of mixing of the pressure medium and the processed material. In combination with using water as a liquid, it is easy to ensure the cleanliness of food materials, etc.

Furthermore, it is possible to perform heat treatment for both heating and cooling, thereby significantly expanding its range of use.

Furthermore, by employing a pressure-increasing free piston, it is possible to obtain an exploration/laboratory-scale device that can efficiently conduct experiments by changing the pressure, that is, setting pressure variables arbitrarily.

In addition, the pressure vessel is covered with a cooling medium circulation jacket, and the jacket is provided with a heating means, so that flexible and rapid temperature control is possible.
By providing heating means in each pressure vessel for exploration and experiment purposes, it is possible to efficiently conduct experiments with arbitrarily set temperature variables.

The present invention not only provides a new processing technology for food materials whose main component is animal protein, such as fish meat, but also enables processing of unknown food processing products by heating and/or processing under pressure. As an extremely useful device for exploring the synergistic effects of cooling, it will greatly contribute to the food industry.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a longitudinal sectional front view of the first embodiment, FIG. 2 is a longitudinal sectional front view of the second embodiment, and FIG. 3 is a longitudinal sectional front view of the third embodiment. It is. 18-1c...pressure vessel, 2a-2c, 3a-3c
・-・Closing member, 4a to 4 c-・Free piston,
6a to 6c... Chamber, 7... Pressure medium supply and pressure adjustment device, 8... Pressure pump, 13° 13a, 13b,
13cm... Circulation jacket for cooling medium, 16...
Heating and/or cooling liquid circulation device, 17--circulation pump, 18--liquid tank, 19-heater, 19a-19
c.--Heater, 20--Cooler, 21a-21cm chamber, 25a-25c--Opening/closing valve, 26a-26c--Closing section, 22--Process supply tank, 27--Recovery tank. Third

Claims (10)

[Claims] (1) Consisting of a pressure vessel and a free piston filled in the vessel, one chamber of the pressure vessel separated by the piston is connected to a pressure medium supply and pressure regulating device, and the other 1. An apparatus for processing food materials under pressure, characterized in that an object to be processed can be supplied to the chamber, and a heat treatment means for the object to be processed in the pressure vessel is provided. (2) The apparatus for processing food materials under pressure according to claim (1), wherein the plurality of pressure vessels are connected to a common pressure medium supply and pressure adjustment device. (3) The apparatus for processing food materials under pressure according to claim (1) or (2), wherein at least one of the free pistons is of a pressure increasing type. (4) The apparatus for processing food materials under pressure according to claim (1), (2) or (3), wherein the heat treatment means includes heating and/or cooling liquid circulation means. (5) One of claims (1) to (4) in which the object to be treated can be fed to the other chamber in the pressure vessel by a pump.
Apparatus for processing food materials under pressure as described in paragraph 1. (6) Claims (1) to (5) in which the opening/closing position of the on-off valve for supplying the processed material to the other chamber is provided in a portion close to the chamber.
) The apparatus for processing food materials under pressure according to one of the items. (7) Claims (1) to (6) in which the pressure medium supplied from the pressure medium supply and pressure adjustment device to one chamber of the pressure vessel is water.
) The apparatus for processing food materials under pressure according to one of the items. (8) Claims (1) to (7) wherein by supplying pressure medium to one chamber of the pressure vessel from the pressure medium supply and pressure adjustment device, the processed material in the other chamber can be taken out.
) The apparatus for processing food materials under pressure according to one of the items. (9) The apparatus for processing food materials under pressure according to one of claims (1) to (8), wherein the pressure vessel is enclosed by a cooling medium circulation jacket. (10) The apparatus for processing food materials under pressure according to claim (9), wherein the jacket is provided with heating means.