JP2009033992A - Sterilizer, and food producing system composed by using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sterilizer capable of thoroughly efficiently applying the most suitable amount of a germicidal agent to an object to be sterilized and conveyed with a carrying passage such as a conveyor, to provide a food producing system composed by using the sterilizer, and to provide a food producing method. <P>SOLUTION: This sterilizer for sterilizing food and other objects to be sterilized has a jetting part which jets a germicidal agent to an object to be sterilized, and a germicidal agent supplying part which supplies a germicidal agent to the jetting part. The jetting part (1) is formed on a position where a germicidal agent is directly brought into contact with an upper surface and a lower surface of an object to be sterilized, existing on a carrying passage which conveys an object to be sterilized. Alternatively, the jetting part (2) is set on the vertical direction of the carrying passage so as to pass a germicidal agent to be jetted from the lower jetting part existing below the carrying passage through the carrying passage and to directly bring into contact with an object to be sterilized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sterilization apparatus, a food production system configured using the same, and a food production method involving a sterilization process. In particular, the present invention relates to a sterilization apparatus that can uniformly sterilize foods and the like being transported on a production line, a food production system configured using the same, and a method for producing food.

  Conventionally, various methods have been provided for sterilization of industrial products such as packaging containers or foods. For example, a method of sterilization using chemicals such as alcohol and hypochlorous acid, a method of irradiating ultraviolet rays Or, it is actually performed as a method of performing heat treatment.

  However, when sterilization is performed using ultraviolet rays, there is a problem that the running cost is increased, for example, the lamp of the ultraviolet irradiation device must be periodically replaced. Furthermore, when performing heat processing, the problem that it cannot be used also exists depending on the physical property of a non-sterilization thing.

  In this regard, the method of performing sterilization using chemicals such as alcohol and hypochlorous acid can eliminate the problem of such an increase in running cost and also eliminates the problem of changes in physical properties related to temperature. be able to.

  Conventionally, the following patent documents have been proposed for an apparatus or a method for performing a sterilization treatment using such a chemical such as alcohol.

  In Patent Document 1 (Japanese Patent Laid-Open No. 2001-513), a solution containing a fungus is sprayed on the entire surface of the mattress so that the mattress can have a long-term antibacterial property and can be in a sterile state. There has been proposed an antibacterial treatment method for mattresses in which the same solution is impregnated and then heat sterilized.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2001-192008) is a device for sterilizing a tray-shaped container for containing and packaging an object to be packaged such as food with an alcohol preparation before accommodating the object to be packaged, After sequentially injecting alcohol preparations onto the upper surface of each tray-shaped container that is conveyed in a column by the conveying means, the heated gas is applied to the upper surface of each tray at the rear of the injection position in the direction of conveying the tray by the conveying means. There has been proposed a sterilization apparatus for tray-shaped packaging containers configured to spray.

In Patent Document 3 (Japanese Patent Application Laid-Open No. 2001-252010), a belt conveyor that continuously transports “shirasu” in order to efficiently sterilize “shirasu” that may be adhering to germs during the flow operation. There has been proposed a “Shirasu” sterilization apparatus in which an injection nozzle for injecting ethanol toward the belt conveyor is provided, and the “Shirasu” passing on the belt conveyor is brought into contact with ethanol fine particles to sterilize.
JP 2001-513 A Japanese Patent Laid-Open No. 2001-192008 JP 2001-252010 A

  In the antibacterial treatment method of the mattress proposed in the Patent Document 1, spray pipes in which a plurality of spray nozzles are arranged at a required interval are arranged in a loop so as to surround the mattress conveyed on the conveyor, By supplying an alcohol solution mixed with an antibacterial agent in a pressurized state from the solution supply pipe, the alcohol solution is sprayed from a spray nozzle arranged in the spray pipe and can be sprayed to a mattress passing through the spray pipe. . However, since the spray pipe is arranged so as to surround the transport conveyor, it is practically difficult to spray the alcohol solution onto the lower surface of the transported mattress.

  Then, this invention makes it the 1st subject to provide the sterilization apparatus comprised so that a disinfectant could be reliably contacted also to the lower surface of the to-be-sterilized object conveyed on a conveyance path.

  Further, in Patent Documents 2 and 3, sterilization apparatuses configured to inject alcohol preparations (ethanol) to foods have been proposed, but in these patent documents, a sterilizing agent is applied to the lower surface of an object to be sterilized. It is difficult. Especially in foods, food hygiene and quality assurance problems may occur if they are not in contact with the disinfectant evenly. On the other hand, if the disinfectant is applied more than necessary, the flavor may be affected. I'm worried. Furthermore, in the manufacture of foods premised on mass production, it is desirable to efficiently sterilize in the production line.

  Therefore, the present invention is a sterilization apparatus for applying a sterilizing agent to foods in particular, and is the minimum necessary so as not to impair the flavor of the foods and to cause food hygiene problems. It is a second object to provide a sterilizing apparatus that can apply the sterilizing agent evenly and can apply the sterilizing agent to the front surface of the food conveyed on the production line.

  Furthermore, in the case where the sterilizing agent is supplied in a fluid state such as gas or liquid, in order to effectively apply the sterilizing agent to the sterilized object, the sterilizing agent is applied in the space where the sterilizing agent is applied. The flow of the sterilizing agent should be taken into consideration, and it is desirable that the sterilizing agent injection position and the injection direction can be arbitrarily adjusted based on the size and shape of the sterilized object.

  Therefore, the present invention is based on the size and shape of the sterilizing device and / or the sterilized material in which the flow after the injection of the sterilizing agent having fluidity is controlled in the space where the sterilizing agent is applied to the sterilized material. The third object is to provide a sterilizer that can arbitrarily adjust the spray position and spray direction of the germicide.

  In order to solve at least any one of the above problems, in the present invention, a sterilizing apparatus capable of uniformly and efficiently applying an optimal amount of a sterilizing agent to an object to be sterilized conveyed by a conveyance path such as a conveyor, and Provided are a food production system configured using the same, and a food production method.

  That is, the sterilization apparatus according to the present invention is a sterilization apparatus for sterilizing food and other sterilized items, and an injection unit that injects a sterilizing agent against the sterilized item, and a sterilizing agent for the injection unit. A sterilizing agent supply unit that supplies the sterilizing agent; and (1) the spray unit is formed at a position where the sterilizing agent is in direct contact with the upper and lower surfaces of the sterilizing object on the conveyance path for conveying the sterilizing object. Or (2) a sterilizing agent that is provided in the vertical direction of the conveyance path that conveys the article to be sterilized and is injected from the lower injection section that exists below the conveyance path passes through the conveyance path. It is provided so that it may be in direct contact with the article to be sterilized.

  In particular, (1) In order to form the injection part at a position where the sterilizing agent is brought into direct contact with the upper surface and the lower surface of the object to be sterilized existing on the conveyance path for conveying the object to be sterilized, for example, the object to be sterilized is placed. It is conceivable to provide an injecting unit that injects the sterilizing agent in advance on the upper surface of the transport path before and an injecting unit that injects the sterilizing agent on the upper surface of the article to be sterilized placed on the conveying path. On the other hand, the spray unit is provided in the vertical direction of the transport path for transporting the article to be sterilized (2), and the sterilizing agent sprayed from the lower spray section present below the transport path passes through the transport path. It can be formed so as to be in direct contact with the article to be sterilized. For this purpose, for example, the sterilizer can be installed in a region where the conveyance path is formed in a mesh shape or has a plurality of openings. In addition, when the sterilization apparatus itself is configured to include a conveyance path for conveying an object to be sterilized, a belt member constituting the conveyance path may be formed of a mesh member or a porous member, It is possible to form the rod members in a direction intersecting with the conveyance direction of the objects by arranging them at a constant interval. The opening diameter of the mesh, the opening diameter and interval of the holes, the interval between the rods, and the like can be appropriately adjusted depending on the size and shape of the article to be sterilized. In particular, when the rod member is formed in a cylindrical shape, if the lower surface of the article to be sterilized is flat, the contact area between the two can be reduced, and as a result, the sterilizing agent can be brought into contact with more regions. Is desirable.

  Even if the sterilization apparatus itself is configured to have a conveyance path for conveying an object to be sterilized, on the conveyance path, more specifically, on the conveyance surface on which the object to be sterilized is placed. It is desirable to spray or apply a disinfectant in advance. This is because the disinfectant is also applied to the contact area of the article to be sterilized with the conveying surface. Further, the sterilizing agent supply unit in the present invention is a part for supplying the sterilizing agent to each injection unit, and for example, if the sterilizing agent has fluidity such as liquid or gas, It can be formed by a pipe or a tube. As a matter of course, a valve for regulating the flow rate of the pipe or tube may be formed.

  And in the said sterilizer, it comprises the lower injection part which exists under the conveyance path, and the upper injection part which exists above the conveyance path, and both injection parts are provided in an asymmetrical position via a conveyance path. desirable. Thereby, the disinfectant injected from the lower injection unit and the disinfectant injected from the upper injection unit collide with each other, and the flow velocity is not reduced. In addition, the disinfectant sprayed from both injection parts forms a flow such as a vortex, which surrounds the object to be disinfected so that the disinfectant can be applied to the entire outer periphery of the object to be disinfected. . Therefore, in order to make such a function and effect remarkable, it is desirable that each ejection portion is configured so that the sterilizing agent sprayed from the ejection portion forms a vortex surrounding the article to be sterilized.

  Furthermore, in preferable embodiment in this invention, the center line of the disinfectant injected | sprayed from the said lower injection part with respect to the said conveyance path is the lower injection part which exists under the conveyance path among the said injection parts. The upper injection part existing above the conveying path has an incident angle of 5 to 85 ° with respect to the center line of the flow of the sterilizing agent injected from the upper injection part. It is formed in the direction.

  If each injection part is formed in this way, the lower injection part can uniformly inject the sterilizing agent over the entire lower surface of the article to be sterilized, while the upper injection part is placed on the conveyance path. The sterilizing agent can be sprayed not only on the upper surface of the object to be sterilized but also on the front surface, rear surface and / or side surface. In addition, by appropriately adjusting the installation position and ejection direction of the upper injection section and the lower injection section, it is possible to perform sterilization processing on various sizes and shapes of objects to be sterilized and used for sterilization processing. The amount of the bactericidal agent to be adjusted can be adjusted to an optimum amount. That is, when the article to be sterilized is a food, the amount of the sterilizing agent used can be greatly reduced. In this regard, if the injection unit is provided so as to surround the article to be sterilized, adjustment of the injection amount and direction of all the injection units becomes complicated, and at least the sterilizing agent injected from any of the injection units is useless. It is also possible to apply a disinfectant more than necessary. In particular, when the article to be sterilized is a food, the amount of the sterilizing agent to be used should be reduced as much as possible in consideration of the flavor of the food, and the entire outer surface should be contacted uniformly. In this respect, if each injection part is formed as in the present invention so that the respective injection directions and injection charges can be adjusted, such problems unique to food can be solved.

  Furthermore, in the present invention, in order to solve at least one of the above-described problems, a food production system for producing solid food, at least a conveyance path for conveying the produced food, and sterilizing the food A food sterilization apparatus, and the sterilization apparatus according to the present invention described above is used as the food sterilization apparatus, and the food sterilization apparatus provides a food production system provided at a position where food before packaging is conveyed To do.

  By implementing the invention relating to such a food production system, a production line capable of reliably and efficiently sterilizing food is provided. In particular, in the case of a system for producing food, there arises a problem that germs are likely to adhere due to the property that the product conveyed on the production line is food. If the product after the sterilization is moved on the production line (ie, “conveyance path”) for a longer time, there is a concern that germs may adhere after the sterilization. Therefore, if the sterilization apparatus according to the present invention described above is installed immediately before the station (or work area) for bagging or packaging, which is the final stage in the production line, germs and the like exist in the final product. You can eliminate the risk of doing so. In particular, since the sterilizing apparatus according to the present invention is configured so that the sterilizing agent can be applied to the lower surface of the food placed on the conveyance path, the sterilizing effect on the product becomes remarkable. Even in such a food production system, it is free to provide a separate sterilizer in other work areas.

  Furthermore, in the present invention, in order to solve at least one of the above-mentioned problems related to the sterilization apparatus and the food production system, a new method for producing food is provided.

  That is, a method for producing food with a sterilization process, wherein the sterilization process is performed by bringing a sterilizing agent into direct contact with food conveyed on the conveyance path, The sterilizing agent is placed on the lower surface of the article to be sterilized by placing the article to be sterilized after passing through the conveyance path and contacting the sterilizing agent with respect to the lower surface of the object or by applying or spraying the sterilizing agent on the conveyance path. The bottom surface sterilization treatment step to be applied and the sterilizing agent are sprayed onto the sterilized material on the conveyance path in the direction where the incident angle with respect to the conveyance path is 5 to 85 °, And a top surface sterilization treatment process to which is applied.

  According to this manufacturing method, the sterilization treatment can be reliably performed on the lower surface of the food placed on the conveyance path. In addition, by performing the lower surface sterilization treatment step and the upper surface sterilization treatment step at different locations, even if the sterilization agent is injected at the same timing, The flow rate is not reduced by the sterilizing agent sprayed in other sterilization treatment steps. Any of the lower surface sterilization process and the upper surface sterilization process may be performed first. Even if the upper surface sterilization process is performed after the lower surface sterilization process, the lower surface sterilization process is performed after the upper surface sterilization process. May be performed. Although it may proceed simultaneously, in this case, the sterilizing agent sprayed in each sterilization treatment step should be adjusted so as not to face each other. Further, any of the processes can be performed in two stages or two places. For example, the upper surface sterilization process can be performed in two stages or performed in two places.

  In the food manufacturing method, it is preferable that a gap forming step is performed for providing a gap between the foods conveyed on the conveyance path at least in a region where the disinfectant is injected. This is because the disinfectant is applied to the entire outer surface including the front, rear and side surfaces of the food. In order to form a gap between such foods, the food is arranged so that there is a gap between the foods when supplied by a parts feeder or the like, or the food on the conveyance path such as a conveyor is rearranged, or the sterilization is performed. The movement speed of the conveyance path in the treatment process is different from the movement speed of the conveyance path leading to the sterilization treatment process, and a gap can be secured between foods due to the difference in movement speed.

  As the fungicide, various conventionally used fungicides can be used. For example, hypochlorous acid, hypochlorite, alcohol, plant-derived fungicides, and the like can be used. In particular, if the article to be sterilized is a food, it is desirable to use a bactericide composed of alcohol or a bactericide containing a bactericidal component extracted from a plant.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In particular, in the present embodiment, the sterilization apparatus 10 for producing sterilized food by performing sterilization on a sterilized product that is a food such as the candy product 50 and has regularity, and The example of the foodstuff manufacturing system formed using this is shown.

  FIG. 1 is a schematic side view of a main part showing a sterilization treatment part (10) (sterilization treatment station) in a food production system configured using a sterilization apparatus 10 according to the present invention, and FIG. 2 is a sterilization treatment in the food production system. It is a principal part upper surface schematic diagram which shows a part (10). 3 is a schematic side view showing the internal configuration of the sterilizer 10 used in the food production system shown in FIGS. 1 and 2, FIG. 4 is a schematic rear view of the sterilizer 10, and FIG. 5 is the sterilizer. 10 is a schematic plan view of 10;

  First, a food production system according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 and FIG. 2 show a food production system for producing a koji product 50, and a koji product formed. The sterilization processing station part which performs the sterilization process with respect to 50 is shown, The said foodstuff manufacturing system can be comprised with the cocoon product manufacturing apparatus station for manufacturing the cocoon product 50 which is not shown in figure other than that. . The sterilization treatment station shown in FIGS. 1 and 2 can be continuously supplied with the cocoon product 50 manufactured at the cocoon product manufacturing apparatus station and the like, and can be sterilized. In particular, FIGS. 1 and 2 show a state in which the manufactured soot product 50 is supplied to the sterilization treatment station by the parts feeder 20.

  The parts feeder 20 includes a first conveyor 29 for supplying the bag product 50 to the sterilization treatment station. The second conveyor 19 included in the sterilization treatment station is manufactured from the first conveyor 29. After receiving the cocoon product 50 and performing the sterilization process, it is supplied to the third conveyor 39 for transporting the product to the packaging station which is the subsequent process. These first, second and third conveyors 39 are provided with belts B for conveying products, and these belts B form the conveying path in the present invention. As shown in this figure, by separating the second conveyor 19 for conveying the product 50, which is a product in the sterilization treatment station, from the first conveyor 29, both line speeds can be changed. As a result, the line speed of the second conveyor 19 can be reduced to the first conveyor 29 even when any one of the soot products 50 sequentially conveyed is close to each other. By making the speed faster than the conveyor 29, it becomes possible to secure a gap between the adjacent product 50 on the first conveyor 29 (gap forming step). As a result, depending on the line speed of the third conveyor 39, it is conceivable that the product 50, which is a product, accumulates on the terminal side of the second conveyor 19, but this causes intermittent operation of each conveyor or manufacturing apparatus. It can be resolved by stopping it. In addition, the code | symbol 35 in FIG. 2 has shown the tank for collecting the germicide injected from the nozzle.

  Next, the sterilizer 10 constituting the sterilization station will be described with reference to FIGS.

  The sterilizer 10 shown in FIG. 3 includes a belt B guided by a plurality of pulleys (or “sprockets”, the same applies hereinafter), which is driven by a motor 40 in the present embodiment. Although the configuration of the belt B will be described later, in particular, in the sterilizing apparatus 10 according to the present embodiment, since the one having alcohol as a main component is used as the sterilizing agent, the motor 40 is used when the alcohol component is volatilized. In consideration of safety, an explosion-proof motor 40 is used. Further, a region where the sterilizing agent is sprayed in the sterilizing apparatus is covered with a cover 36 (preferably a transparent cover) in order to prevent the alcohol sterilizing agent from diffusing or scattering.

  The power of the motor 40 is transmitted to the head pulley 17 via the drive belt 41, and the belt 19 constituting the sterilizer 10 is driven by the head pulley 17. In particular, in FIG. 3, the belt 19 is configured to rotate counterclockwise, and therefore the first conveyor 29 provided in the parts feeder 20 exists on the right side of the drawing. Further, in the sterilizing apparatus 10 shown in FIG. 3, a tension pulley 16 for adjusting the tension of the belt 19 is provided, and the belt is moved by moving in the left-right direction (the left-right method when facing the drawing). The tension at 19 is adjusted. In the drawings, reference numerals 14 and 15 denote pulleys for guiding the belt 19.

  And this sterilizer 10 is for injecting the sterilizing agent supplied from the sterilizing agent storage part 30 shown in the said FIG. 1 to the bag product 50 (object to be sterilized) conveyed by the belt B of a 2nd conveyor. The nozzles 11 and 12 are provided as jetting units. In particular, in the present embodiment, as the nozzle, one lower injection unit 12 installed below the belt 19 and two upper injection units 11a and 11b installed above the belt 19 are provided. Yes. The lower injection unit 12 is installed at substantially the center of the sterilization apparatus 10 and is formed so as to eject radially from the lower side to the upper side (that is, toward the lower surface of the belt 19). The injection parts 11a and 11b face the belt 19 diagonally, and the incident angle (α) of the center line of the bactericide injected from each injection part with respect to the conveyance path is 5 to 85 °, preferably 10 It is formed to be ˜70 °. That is, although the upper injection units 11a and 11b face each other diagonally, the respective injection directions are directed from the top to the bottom (that is, toward the upper surface of the belt 19). The flow of disinfectants that are applied will not interfere with each other. And the disinfectant injected from the lower injection part 12 is radially ejected upward, and all the nozzles 11 and 12 are opposed to the disinfectant injected from the upper injection part in part. The sterilizing agent ejected from the air forms a constant flow and surrounds a part or the whole of the bag product 50 on the belt 19. Thereby, a disinfectant contacts the whole outer surface of the bag product 50, and a disinfection process can be performed reliably. Moreover, in the sterilization apparatus 10 formed in this way, the injection angle of the lower injection unit and the distance to the lower surface of the belt 19 are adjusted, the injection angle of the upper injection unit and the distance to the lower surface of the belt, or the injection direction are adjusted. Thus, it is possible to quickly cope with products of various shapes.

  In the sterilizing apparatus 10 shown in the present embodiment, as shown in FIG. 1, the valve 31 for adjusting the flow rate is formed for the common supply line that reaches all the nozzles. It is desirable that the valve 31 for adjusting the flow rate in the supply line for supplying the nozzle is provided independently for each nozzle. Thereby, the injection amount of the sterilizing agent in each nozzle 11 (a, b), 12 is finely adjusted. For example, in the case of food, the smallest possible amount of sterilizing agent is sprayed within a range in which the sterilizing effect can be guaranteed. To be able to be formed.

  Next, with reference to FIG. 5, a method of applying the bactericidal agent to the lower surface of the bag product 50, that is, the surface placed on the belt 19, and the configuration of the belt 19 for realizing this will be described.

  FIG. 5 shows an internal configuration when the above-described sterilizer 10 is viewed from above, and particularly shows the configuration of the belt 19. As is apparent from FIG. 5, in this embodiment, the conveyor that conveys the cocoon product 50 in the sterilization treatment station is a rod member that is arranged in parallel in the length direction (that is, the moving direction of the belt 19). 18 is used to form a belt portion 19 so that the disinfectant injected from the lower injection portion 12 can directly contact the lower surface of the bag 50. At this time, the disinfectant injected from the lower injection unit 12 is not applied to the area directly in contact with the rod member 18 on the lower surface of the bag product 50. However, the upper surface of the rod member 18 (that is, the surface on which the soot product 50 is placed) also contacts the disinfectant sprayed from the upper jetting portions 11a and 11b, and the soot product 50 is placed thereon. Therefore, the disinfectant can be applied to the direct contact area with the rod member 18 indirectly. In addition, in order to perform this more reliably, it is also desirable to separately provide an injection portion (nozzle) for applying a bactericidal agent on the upper surface of the rod member 18 before the bag product 50 is placed.

  It is desirable to adjust the size of the rod members 18 and the interval between them appropriately according to the size and shape of the product to be conveyed. If an example of such adjustment is given, for example, when the product to be conveyed is a cocoon product 50 formed in a cube having a length of 62 mm, a width of 40 mm, and a height of 18 mm, the outer diameter of the rod member 18 is 1.8-2. It is desirable to arrange them at intervals of 0.0 mm and 8-12 mm, preferably about 10 mm from each other. The material of the rod member 18 should be appropriately selected in consideration of durability, a coefficient of friction with a product to be transported, and the like, and when the product to be transported is the bag product 50, it is made of stainless steel. Is desirable. Further, if each rod member 18 is formed so that it can be detached and replaced separately, even if any rod member 18 is damaged or deformed, the rod member 18 is not replaced without replacing the entire belt 19. You just need to change it.

  Furthermore, in the sterilization apparatus 10 shown in the present embodiment, guides 13 are formed on both sides of the conveyance path (belt 19) for aligning the smoked products 50 to be conveyed in a line in the conveyance direction. However, the guide 13 is formed except for a region where the smoked product 50 existing on the conveyance path is in contact with the disinfectant sprayed from the upper spraying portions 11a and 11b. This is because the disinfectant sprayed from the upper spray section is also brought into contact with the side surface of the soot product 50.

  Note that the sterilization apparatus 10 according to the present invention, the food production system configured using the same, and the food production method are not limited to the above-described embodiments, and do not depart from the gist of the present invention. Of course, various changes can be made.

Schematic side view of the main part showing the sterilization treatment part in a food production system configured using a sterilizer Schematic diagram of the main part showing the sterilization part of the food production system Side schematic diagram showing the internal configuration of the sterilizer used in the food production system shown in FIGS. 1 and 2 Rear schematic view of the sterilizer shown in FIG. Schematic plan view of the sterilizer shown in FIG.

Explanation of symbols

10 Sterilizer
11 nozzles
11a, b Upper injection part
12 Lower injection part
13 Guide
16 Tension pulley
17 Head pulley
18 Rod member
19 Belt (second conveyor)
20 Parts feeder
30 Disinfectant storage
40 motor

Claims (6)

A sterilizer for sterilizing food and other sterilized items,
An injection unit that injects a sterilizing agent against an object to be sterilized, and a sterilizing agent supply unit that supplies the sterilizing agent to the injection unit,
The injection unit is
(1) It is formed at a position where the sterilizing agent is in direct contact with the upper surface and the lower surface of the object to be sterilized on the conveying path for conveying the object to be sterilized, or (2) the conveying path for conveying the object to be sterilized. The sterilizing agent that is provided in the up and down direction and is sprayed from the lower injection unit existing below the conveyance path is provided so as to pass through the conveyance path and directly contact the article to be sterilized. Sterilizer to do.   The lower injection part which exists below a conveyance path, and the upper injection part which exists above a conveyance path are comprised, and both injection parts are provided in the asymmetrical position centering on a conveyance path. Sterilization equipment.   Of the jetting units, the lower jetting unit present below the transporting path is such that the center line of the bactericide injected from the lower jetting unit is in a direction perpendicular to the transporting path, The sterilization apparatus according to claim 1 or 2, wherein the upper injection section existing above has a direction in which an incident angle of a center line in the injection direction with respect to the conveyance path is 5 to 85 degrees. A food production system for producing solid food,
At least a transport path for transporting the manufactured food, and a food sterilizer for sterilizing the food;
The sterilization apparatus as described in any one of Claims 1-3 is used as the said food sterilization apparatus, The said food sterilization apparatus is a food manufacturing system provided in the position where the foodstuff before packaging is conveyed. A method for producing a food product accompanied by a sterilization process,
The sterilization treatment step is performed by directly contacting the sterilizing agent with respect to the food conveyed on the conveyance path,
Pass the sterilizing agent through the conveying path to the lower surface of the object to be sterilized on the conveying path, or place the article to be sterilized after applying or spraying the sterilizing agent on the conveying path, and A lower surface sterilization treatment step of applying a bactericide on the lower surface;
An upper surface sterilization treatment step of spraying a sterilizing agent on a sterilized object on the conveyance path in an orientation in which an incident angle with respect to the conveyance path is 5 to 85 °, and applying the sterilizing agent to at least an upper surface of the sterilized object on the conveyance path; A method for producing a food, comprising: The food manufacturing method according to claim 5, wherein the food conveyed on the conveyance path is subjected to a gap forming step of providing a gap between the foods at least in a region where the disinfectant is sprayed.

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