JP2000083579A - Sterilization of fishes and meats and system therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a sterilization of fishes and/or the like by filling a space holding the fishes and/or the like with a clean, low-temperature combustion gas produced under specific conditions so as to restrain the meat quality from deterioration with time and prevent matter affecting human body from adhering to and being impregnated into the fishes and/or the like. SOLUTION: This sterilization of fishes and/or meats is performed as follows, a combustion gas G produced by completely burning charcoal C and consisting mainly of CO2 is cooled and filtered into a clean, low-temperature combustion gas G1, a space holding fishes and/or meats at appropriate temperatures is then filled with the above gas G1. This sterilization is performed pref. using a sterilizing system 1 made up of a charcoal combustor 2, a cooling device 8 and a filtering device 9 for a combustion gas G discharged from the combustor 2 and consisting mainly of CO2, and a sterilizer 4 intended for holding fish and/or meat therein and to be filled with the clean, low-temperature combustion gas G1 resulted from passing the gas G through the cooling device 8 and the filtering device 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to fish, such as fish meat, animal meat, etc., in particular, in which cuts are smoked at an appropriate temperature and sterilized.
The present invention relates to a method and an apparatus for sterilizing meat.

[0002]

2. Description of the Related Art Conventionally, as a means for processing fish and meat so that they can be stored for a long period of time, smoke, that is, smoke generated by burning chips or the like is generally used.

[0003]

However, in the above method, there is a problem to be solved as follows. (I) The meat quality changes because it is directly smoked by high temperature smoke. (Ii) Since smoke contains substances other than CO ₂ , its odor, harmful substances such as dioxins, etc. are
It adheres to and impregnates meat.

[0004]

SUMMARY OF THE INVENTION In view of the problems (i) and (ii) based on the above-mentioned prior art, the present invention is based on CO ₂ as a main component generated by completely burning charcoal by a charcoal combustion device. After cooling and filtering the generated combustion gas by a cooling / filtration device, the clean low-temperature combustion gas is filled in a sterilizer at a proper temperature in which fish and meat are accommodated and smoked, thereby suppressing temporal changes in meat quality. At the same time, the above-mentioned problems are solved by preventing substances and the like which have a bad effect on the human body from adhering to and impregnating fish and meat.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, in a sterilization apparatus 1 for smoking fish meat, animal meat, and the like, charcoal C is burned at 800 ° C. or more in a closed space, and combustion mainly composed of CO ₂ is performed. Charcoal combustion device 2 for generating gas G, cooling / filtration device 3 for combustion gas G sent from charcoal combustion device 2, and low-temperature combustion gas G1 cooled and filtered by cooling / filtration device 3 Fish and meat sterilizer 4
It is composed of

A grate 5 for placing charcoal C is provided below the charcoal combustion device 2, a combustion burner 6 for charcoal C is provided below the grate 5, and a discharge port 7 is provided above the charcoal combustion device 2. ing.

In the cooling / filtering device 3, the cooling device 8
And a filtering device 9. In the cooling device 8, the cooling device 8 includes a primary cooling unit 10 and a secondary cooling unit 11,
The primary and secondary cooling units 10 and 11 are provided with storage tanks 12 and 13 for the refrigerants A1 and A2 and a flow path of the combustion gas G passing through the storage tanks 12 and 13.
The refrigerant A1 on the primary cooling unit 10 side is water, and the refrigerant A2 on the secondary cooling unit 11 side is ice. Also, the entrances and exits 14a, 14b, 15a, 15b in the flow paths 14, 15 are projected outward from the side surfaces of the storage tanks 12, 13, and the inner portions of the storage tanks 12, 13 in the flow paths 14, 15 are connected to the entrance 14a, , 17, 17a..., And are converged and unified at the outlets 14b, 15b. Also, it is desirable that the cooling flow path portions 16, 16a, ..., 17, 17a ... are formed in a spiral or meandering shape so that a sufficient cooling time for the combustion gas G can be ensured in a limited space. The duct 18 connects the discharge port 7 of the charcoal combustion device 2 and the inlet 14a of the flow path 14 in the primary cooling unit 10 with the flow path 14 in the primary cooling unit 10.
The outlet 14b of the secondary cooling unit 11 and the inlet 15a of the flow path 15 in the secondary cooling unit 11 are connected by a duct 18a. In the filtration device 9, the washing water E is stored in a closed water storage tank 20, and a discharge pipe 21 having an inner end protruding into the water storage tank 20 is provided at a lower portion of one side of the water storage tank 20. In addition to the above, an exhaust port 22 is opened in the upper part on the other side. In the discharge pipe 21, an infinite number of discharge holes 23, 23a,.
Inlet 21a protruding outward from one side lower part and secondary cooling part 11
Is connected to the outlet 15b of the flow path 15 by a duct 18b. Further, the filter device 9 is provided with a temperature control function of the washing water E as a filtering material stored in the filter device 9 so as to suppress a temperature change of the low-temperature combustion gas G1 passing through the filter device 9. You may do it. The cooling device 8 and the filtering device 9
In short, the high-temperature combustion gas G sent from the charcoal combustion device 2 is reduced to a predetermined temperature, and the dust and other impurities in the combustion gas G are removed to make the low-temperature combustion gas G1 substantially pure. If it is CO ₂ gas,
It is not limited to the above configuration.

[0008] The fish and meat sterilizer 4 is provided with a temperature control function for adjusting and maintaining the temperature of the internal space to an appropriate temperature which does not change color for some time even if the fish and meat are left as they are, A plurality of mounting shelves 24, 24a are provided in the internal space of the sterilizer 4, and the mounting shelves 24, 24a are provided with air permeability so that the low-temperature combustion gas G1 can pass therethrough. The appropriate temperature varies depending on the type of fish and meat to be accommodated. For example, in the case of tuna, it is set to about 2 to 3 ° C. Further, a filling pipe 25 whose inner end protrudes into the water storage tank 20 is provided below the sterilizer 4, and an inlet 25a of the filling pipe 25 and an exhaust port 22 of the filtering device 9 are connected by a duct 18c. .
In the drawings, 30 and 30a are suction pumps provided in a duct 18b between the cooling device 8 and the filtering device 9 and a duct 18c between the filtering device 9 and the sterilizing device 4.

Next, a method for sterilizing fish and meat according to the present invention will be described. (1) Charcoal C is put into the charcoal combustion device 2, burned by the combustion burner 6, and the suction pumps 30, 30a are operated. (2) The combustion gas G generated by the combustion of the charcoal C passes through the outlet 7 and the duct 18 in the order of the flow path 14 in the primary cooling unit 10 and the flow path 15 in the secondary cooling unit 11, and in the process. The combustion gas G is gradually cooled. (3) The cooled low-temperature combustion gas G1 flows into the discharge pipe 21 via the duct 18b, and the discharge holes 23, 23a of the discharge pipe 21 are formed.
... The low-temperature combustion gas G1 is bubbled and jetted into the washing water E in the filter device 9 and accumulates in the space above the washing water E. (4) The clean low-temperature combustion gas G1 accumulated in the space above the washing water E is filled into the filling pipe via the exhaust port 22 and the duct 18c.
25 and into the sterilizer 4, and the storage shelves 24, 24
a ... to fill the inside of the sterilizer 4,
24a… The upper fish and meat are smoked to produce a sterilized processed product. In the combustion step (1), most of the charcoal C is carbon. Therefore, by the complete combustion in the charcoal combustion device 2, the combustion gas G is mainly composed of CO ₂ . or,
In the filtration step (3), the dust and other impurities in the bubbled low-temperature combustion gas G1 are captured by the washing water E and settled or dissolved, whereby the low-temperature combustion gas G1 is filtered and cleaned, become substantially pure CO ₂ gas, such as described above, when the sterilization processing of (4), clean CO ₂ and fish in low-temperature combustion gas G1, meat dyes react, frozen (over 20 ° C approximately ), But the flesh color is retained for a long time.

[0010]

In short, the present invention provides a method for cooling and filtering a combustion gas G mainly composed of CO ₂ , which is generated by completely burning charcoal C, and then producing such a clean low-temperature combustion gas G1.
Is filled in the space under the appropriate temperature condition in which fish and meat are stored. First, it is possible to prevent harmful substances from adhering to and impregnating fish and meat, so that fish and meat are safe. Secondly, the processed product can be preserved without deteriorating the meat color of the processed product by CO ₂ , and the processed product can be sterilized for fish and meat. Third, since the food is smoked at a low temperature, a change in meat quality can be prevented. Therefore, fish and meat processed by such a method can be stored for a long period of time without deterioration in meat color, meat quality, etc. if they are frozen and managed at about -20 ° C. It can be stored and transported, and management and transportation costs can be greatly reduced.

A charcoal burning device 2 and the charcoal burning device 2
A cooling device 8 and a filtering device 9 for the combustion gas G containing CO ₂ as a main component and a clean low-temperature combustion gas G1 that has passed through the cooling device 8 and the filtering device 9. Since the apparatus is constituted by the sterilizer 4 to be accommodated, the sterilization of fish and meat at a low temperature can be realized by an apparatus having a simple structure. Further, since the cooling device 8 is configured by the storage tanks 12 and 13 for the refrigerants A1 and A2 and the flow paths 14 and 15 of the combustion gas G penetrating the storage tanks 12 and 13,
The temperature of the combustion gas G can be reduced by a device having a simple structure. Further, since the inner portions of the storage tanks 12, 13 in the flow paths 14, 15 are branched into a plurality of cooling flow path sections 16, 16a, 17, 17a, etc., a large amount of combustion gas G is reduced at a time. You can do it. Also, since the inner portions of the storage tanks 12 and 13 in the flow paths 14 and 15 are formed in a spiral or meandering shape, the storage tank 1
Since the flow paths 14 and 15 become longer in the limited space in the areas 2 and 13, and the cooling time naturally becomes longer accordingly, the cooling function of the cooling device 8 can be improved. Although it is costly to lower the high temperature combustion gas G at one time, the cooling device 8 is formed by connecting the primary cooling unit 10 and the secondary cooling unit 11 so that the primary cooling unit 11 and the secondary cooling unit 11 are connected to each other. Since different refrigerants A1 and A2 are stored in the cooling unit 12, the combustion gas G is
After cooling to some extent, the types and temperatures of the refrigerants A1 and A2 can be set so as to be rapidly cooled in the secondary cooling unit 11, and the efficiency of lowering the temperature of the combustion gas G can be improved.
Further, the filtration device 9 is connected to a closed water tank 20 for washing water E,
A discharge pipe 21 penetrating the lower part of one side of the water tank 20;
Since it is constituted by the exhaust port 22 opened at the upper part of the other side 20, dust and other impurities in the low-temperature combustion gas G 1 can be removed with a device having a simple structure, and the practical effect is extremely large. It becomes.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a sterilization apparatus according to the present invention.

FIG. 2 is a plan view of FIG.

[Explanation of symbols]

 2 Charcoal combustion device 4 Sterilization device 8 Cooling device 9 Filtration device 12, 13 Storage tank 14, 15 Channel 16, 16a… Cooling channel 17, 17a… Cooling channel 10 Primary cooling unit 11 Secondary cooling unit 20 Water storage Vessel 21 Discharge pipe 22 Exhaust port A1, A2 Refrigerant C Charcoal E Wash water G Combustion gas G1 Low temperature combustion gas

Claims (7)

[Claims] 1. CO ₂ generated by completely burning charcoal
After cooling and filtering the combustion gas containing as a main component, such clean low-temperature combustion gas is filled in the space under the appropriate temperature condition in which the fish and the meat are stored. Sterilization processing method. 2. A charcoal combustion device, a cooling device and a filtering device for a combustion gas mainly containing CO ₂ delivered from the charcoal burning device, and a clean low-temperature combustion gas passing through the cooling device and the filtering device. Fish, characterized by being constituted by a sterilizer for accommodating fish, meat,
Sterilization processing equipment for meat. 3. The apparatus for sterilizing fish and meat according to claim 2, wherein the cooling device is constituted by a storage tank for a refrigerant and a flow path of combustion gas penetrating the storage tank. 4. The apparatus for sterilizing fish and meat according to claim 3, wherein an inner portion of the storage tank in the flow path is branched into a plurality of cooling flow paths. 5. An inner portion of a storage tank in a flow path, which is formed in a spiral or meandering shape.
Fish and meat sterilization equipment. 6. The cooling device according to claim 3, wherein a primary cooling unit and a secondary cooling unit are connected to each other and different cooling mediums are stored in the primary cooling unit and the secondary cooling unit. Fish and meat sterilization equipment. 7. A filter device comprising a closed storage tank for washing water, a discharge pipe penetrating a lower part of one side of the water storage tank, and an exhaust port opened at an upper part of the other side of the water storage tank. 7. The fish and meat sterilizing apparatus according to claim 2, 3, 4, 5, or 6.