DE102022122542A1 - Device and method for treating containers - Google Patents

Abstract

Device (1) and method for treating containers (2), preferably in a beverage bottling plant, the device (1) having: a transport device (4) which is set up to move the containers (2) along a conveying direction (F), preferably along a linear trajectory; a rinser (20) with a rinser housing (20a), through which the containers (2) can be transported along the conveying direction (F) by means of the transport device (4), the rinser (20) being set up to transport the containers (2) from the transport device (4). ) to disinfect the container (2) transported along the conveying direction (F) with a hot disinfectant.

Description

Technical area

The present invention relates to a device and a method for treating containers, in particular in a beverage bottling plant.

State of the art

In the field of beverage filling systems, it is known to disinfect the containers before filling with a filling product, usually using aqueous or gaseous disinfectants such as hydrogen peroxide or peracetic acid. Through sterilization or disinfection, the entry of harmful microorganisms and/or spores into the filling product is avoided or at least significantly reduced, which increases the storage life of the bottled beverage and stabilizes the product properties of the filling product after filling. For this purpose, the disinfectant fluid is applied to surfaces, in particular inner surfaces of the container, using nozzles and rinsed out again after a defined exposure time in order to keep residual concentrations in the container as low as possible.

The disinfection of packaging materials, especially in the PET sector, but also in glass filling, is usually done through the use of strong oxidative disinfectants. The use of high temperatures is subject to certain restrictions, particularly with the materials mentioned: PET containers can deform, in particular shrink, at temperatures that are too high; In the case of glass containers, the risk of glass breaking increases if the temperature is too high.

Chemical-based container disinfection requires a lot of effort both in terms of technology (suction, ensuring hermetic systems, concentration, flow and temperature measurement, etc.) and media technology (water, chemicals, etc.). This adversely affects the use of resources, maintenance effort, costs and the like.

Presentation of the invention

An object of the present invention is to provide an improved device and an improved method for treating containers, preferably in a beverage bottling plant, in particular to improve product safety in a mechanically simple and reliable manner.

The task is solved by a device with the features of claim 1 and a method with the features of the independent method claim. Advantageous further developments follow from the subclaims, the following description of the invention and the description of preferred exemplary embodiments.

The device according to the invention is used to treat containers, in particular comprising filling the containers with a filling product. The device is particularly preferably used in a beverage bottling plant, for example for bottling water (still or carbonated), beer, juice, soft drinks, smoothies, dairy products and the like. The containers to be treated usually have a container opening or container mouth through which the containers are filled.

The device comprises a transport device which is set up to transport the containers along a conveying direction, and a rinser with a rinser housing through which the containers can be transported along the conveying direction by means of the transport device, the rinser being set up to transport the containers from the transport device Disinfect containers transported along the conveying direction with a hot disinfectant.

The terms “disinfection”, “disinfection” etc. include partial sterilization as well as sterilization, which essentially aims at complete disinfection.

By integrating the disinfection into the rinser, additional stations can be dispensed with, which improves product safety in a particularly compact way in terms of mechanical engineering. By using a hot disinfectant, for example more than 80°C, chemicals can also be reduced or eliminated completely, which has a beneficial effect on sustainability, health, technical effort, for example with regard to suction, etc.

Preferably, the transport device is set up to transport the containers along a linear trajectory through the rinser. In other words, the rinser is preferably a linear rinser. A linear rinser enables optimal, rapid cleaning and disinfection of the containers according to the invention.

The disinfectant is particularly preferably a chemically pure, gaseous substance such as steam, preferably water vapor. The rinser is also preferably set up to dispense the disinfectant at a temperature of at least at least 100°C should be applied to the containers, especially the inner surfaces of the containers. By avoiding chemicals and using hot steam, the containers do not need to be rinsed afterwards to remove any chemicals. The available treatment time can therefore be fully used for disinfection, or the treatment time can be shortened.

The containers to be treated here are particularly preferably temperature-resistant containers such as cans, in particular with a metallic component. Cans whose essential component is metal can be disinfected at high temperatures without affecting the material.

The device preferably has an insulator which, viewed in the conveying direction, is arranged immediately behind the rinser, i.e. downstream of the rinser housing, and/or is blocked with it. In this case, the rinser acts as a lock through which the containers can be introduced into the isolator. The insulator is particularly preferably part of a filling device for filling the containers with a filling product. In other words, the filling device has an insulator with insulator walls. The isolator, also referred to as a “clean room”, provides a space that is essentially closed off from the environment in order to enable hygienic, sterile and/or aseptic container treatment, in particular filling and closing, protected from external influences. In the isolator, for example, a filler carousel for continuously filling the containers and/or transport stars for transporting the containers to be filled and the filled containers and/or a sealer for closing the filled containers, each with a container closure and the like, are provided.

By placing the rinser directly in front of the isolator or blocking it with it, the rinser acts synergistically as a disinfecting lock device for introducing the containers into the isolator without contaminating the controlled atmosphere in the isolator.

Preferably, the rinser has a pressure/climate system that is set up to generate and maintain a controlled, preferably aseptic, atmosphere in the rinser housing during disinfection of the containers. By disinfecting the containers in a controlled, particularly aseptic atmosphere, the rinser not only mechanically frees the containers of particles, but also actively disinfects the packaging. By integrating the disinfection into the rinser, additional stations can be dispensed with, which improves product safety in a particularly compact way in terms of mechanical engineering.

Preferably, the pressure/climate system is set up to generate and maintain an excess pressure at least in sections in the rinser housing relative to the ambient pressure. In this way, any ingress of impure air from outside is prevented by a pressure barrier.

Preferably, the insulator is designed to generate and maintain an excess pressure relative to the pressure in the rinser housing, thereby creating a pressure gradient from the insulator, across the rinser to the external environment. In this way, using the rinser as a lock, an effective separation between the aseptic atmosphere in the isolator and the non-sterile external environment is ensured.

Preferably, the pressure/climate system has at least one sterile air supply for introducing sterile air into the rinser housing and at least one suction system for sucking the atmosphere out of the rinser housing, thereby achieving a continuous exchange of sterile air in the rinser. The suction primarily serves as a sterile air suction, but it can also or alternatively function as a steam and/or condensate suction.

The rinser preferably has several areas, comprising: a disinfection area, which is set up to apply the disinfectant to the containers, in particular their inner surfaces, and a condensate/drip area, seen in the conveying direction, arranged behind the disinfection area, which is set up in such a way that that condensate and excess disinfectant can drip out. The disinfection area ensures complete or at least partial disinfection of the containers. The disinfectant in the disinfection area is applied via appropriate nozzles, with the inner surfaces of the container in particular being subjected to the respective treatment.

The implementation of the pressure barrier by the rinser can be differentiated. The pressure/climate system is preferably set up to generate a slight negative pressure compared to the surroundings in the disinfection area. This ensures that the disinfectant cannot escape into the environment. According to one exemplary embodiment, there is excess pressure in the condensate/drip area and in the disinfection area There is a negative pressure compared to the surroundings in the area.

The condensate/drip area can be located together with the disinfection area in the front section of the rinser, i.e. in the entrance area of the rinser, or can extend up to there, whereby any transfer of particles, dirt, etc. towards the isolator is effectively prevented.

Preferably, the device comprises a first container turner, which is set up to turn the containers upside down, so that the respective container mouth is oriented downwards for treatment with the disinfectant, and a second container turner, which is set up to turn the containers backwards After treatment with the disinfectant, return to the starting position in which the respective container mouth is oriented upwards. The second container turner is preferably arranged in the rinser housing in order not to impair any lock function of the rinser. The first container turner can be arranged in the entrance area of the rinser housing or in front of the rinser housing, i.e. upstream of the rinser housing in the conveying direction. The container turners are able to rotate the containers by 180° during the continuous inflow, so that they have the optimal position and position for the respective treatment.

The above-mentioned object is further achieved by a method for treating containers, preferably in a beverage bottling plant, the method comprising: transporting the containers along a conveying direction, preferably along a linear trajectory, by means of a transport device; Disinfecting the containers with a hot disinfectant during transport along the conveying direction through a rinser housing of a rinser.

The features, technical effects, advantages and exemplary embodiments that were described in relation to the device apply analogously to the method.

For the reasons mentioned above, the disinfectant is preferably a chemically pure, gaseous substance, in particular steam, preferably water vapor. The rinser preferably applies the disinfectant at a temperature of at least 100 ° C to the containers, in particular the inner surfaces of the containers.

For the reasons mentioned above, the containers to be treated are preferably essentially temperature-resistant containers, in particular cans with a metallic component.

Preferably, for the reasons mentioned above, following disinfection in the rinser, the containers are moved by means of the transport device into an isolator, which is preferably part of a filling device for filling the containers with a filling product, so that the rinser functions as a lock for the isolator.

For the reasons mentioned above, a controlled, preferably aseptic, atmosphere is preferably generated in the rinser housing by a pressure/climate system and maintained during the disinfection of the containers. The pressure/climate system preferably generates and maintains an excess pressure in the rinser housing compared to the ambient pressure.

Preferably, for the reasons mentioned above, an excess pressure is generated and maintained in the insulator compared to the pressure in the rinser housing.

Preferably, for the reasons mentioned above, the pressure/climate system carries out a continuous exchange of sterile air in the rinser housing by means of at least one sterile air supply for introducing sterile air into the rinser housing and at least one suction system for sucking the atmosphere out of the rinser housing.

For the reasons mentioned above, the rinser preferably has several areas, comprising: a disinfection area in which the containers, in particular their inner surfaces, are exposed to the disinfectant, and a condensate/drip area, seen in the conveying direction, arranged behind the disinfection area, in which condensate and excess disinfectant can drip out.

There is preferably a slight negative pressure compared to the surroundings in the disinfection area. This ensures that the disinfectant cannot escape into the environment. According to one exemplary embodiment, there is an overpressure in the condensate/drip area and a negative pressure in the disinfection area compared to the environment.

Before disinfection, the containers are preferably turned upside down using a first container turner, so that the respective container mouth is oriented downwards for treatment with the disinfectant, with the containers being returned to the starting position after treatment with the disinfectant, preferably using a second container turner. in which the respective container mouth is oriented upwards, can be turned back.

The spatial designations “top”, “bottom”, etc. refer to the direction of gravity when the device is used and installed as intended. Terms such as “before”, “behind”, “upstream”, “downstream”, “between”, etc. refer to the conveying direction of the containers through the transport device.

Further advantages and features of the present invention can be seen from the following description of preferred exemplary embodiments. The features described therein can be implemented alone or in combination with one or more of the features set out above, provided the features do not contradict each other. The following description of preferred exemplary embodiments is made with reference to the accompanying drawing.

Short description of the characters

• 1 schematisch eine Vorrichtung zum Behandeln von Behältern, umfassend eine Füllvorrichtung mit Isolator und einen Rinser.

Preferred further embodiments of the invention are explained in more detail by the following description of the figure. This shows:

• 1 schematically a device for treating containers, comprising a filling device with an insulator and a rinser.

Detailed description of preferred embodiments

Preferred exemplary embodiments are described below using the 1 described, which schematically shows a device 1 for treating containers 2.

The device 1 is used in particular in food processing; in particular, it is or forms part of a beverage bottling system, for example for bottling water (still or carbonated), soft drinks, juice, beer, mixed drinks and the like. For this purpose, the device 1 has a filling device 10, which is set up to fill the containers 2 with a filling product.

The containers 2 to be treated here are particularly preferably temperature-resistant containers 2 such as cans, in particular with a metallic component. Cans whose essential component is metal can be disinfected at high temperatures without affecting the material.

The filling device 10 is designed, for example, in a rotary design, in which the containers 2 to be filled are fed to a filler carousel with a plurality of filling elements and are filled with the filling product along a partial circle during transport. Details of the filling device 10, such as the filler carousel, filling elements, product and media lines, etc. are in the 1 Not shown.

The filling product is filled in a controlled, preferably aseptic atmosphere. For this purpose, the filling device 10 has an insulator 11 with insulator walls. The isolator 11 provides a space that is essentially closed off from the environment in order to enable hygienic, sterile and/or aseptic container treatment, protected from external influences. Components for treating the containers 2 are accommodated in the insulator 11. In the insulator 11, for example, the filler carousel for continuously filling the containers 2 and/or transport stars for transporting the containers to be filled and the filled containers 2 and/or a sealer for closing the filled containers 2, each with a container closure, etc. are provided.

Immediately upstream of the filling device 10, seen in a conveying direction F of the container 2, there is a rinser 20, via which the containers 2 to be filled are fed to the filling device 10. The rinser 20 is preferably designed as a lock device which is set up to introduce the containers 2 into the isolator 11 without contamination of the controlled atmosphere located in the isolator 11.

The containers 2 are fed to the device 1 by a container feed 3 and transported by a transport device 4 in the conveying direction F along a preferably linear trajectory. However, linear transport is not absolutely necessary. The containers 2 can be transported along a curved, in particular circular, trajectory. The transport device 4 can comprise a conveyor belt, transport stars and/or other suitable means to transport the containers 2 along the conveying direction F. The rinser 20 can be designed, for example, as a linear rinser or in a rotary manner.

In the present exemplary embodiment, the containers 2 are provided and fed from the container feed 3 in an upright position, i.e. with the container mouth 2a oriented upwards.

The containers 2 are then turned upside down by a first container turner 5 so that the respective container mouth 2a is oriented downwards. The first container turner 5 can be part of the rinser 20 or, as in the exemplary embodiment shown, can be arranged outside the rinser 20.

The containers 2, rotated through 180°, are then moved into the rinser 20, treated accordingly and handed over to the filling device 10. Before the containers 2 enter the insulator 11, they are turned back into the upright position by means of a second container turner 21, which is part of the rinser 20 or is arranged therein, so that the containers 2 are filled with the filling product in the filling device 10 and then can be closed.

The rinser 20 includes a rinser housing 20a that is physically or conceptually divided into multiple areas or chambers.

In a disinfection area 22 of the rinser 20, the containers 2, in particular the inner surfaces thereof, are exposed to a high-temperature disinfectant, whereby the containers 2 are at least partially sterilized. For this purpose, disinfection nozzles 22a are installed in the disinfection area 22, which are connected via a corresponding line system to a disinfectant supply 22b, comprising, for example, a reservoir for holding disinfectant. The disinfection nozzles 22a are positioned and aligned so that the disinfectant is injected or introduced into the containers 2 to be disinfected.

The disinfectant has a high temperature, approximately at least 80 ° C, preferably at least 100 ° C, but preferably contains no or only minimal chemicals. In particular, the disinfectant can be a chemically pure, gaseous substance, such as steam, preferably water vapor.

Following the disinfection area 22, the containers 2 enter a condensate/drip area 23 of the rinser 20, in which condensate and excess disinfectant can drip out and, if necessary, be transported away.

The condensate/drip area 23 can be located together with the disinfection area 22 in the front section of the rinser 20, i.e. in the entrance area of the rinser 20, or can extend up to there, whereby any transfer of particles, dirt, etc. in the direction of the insulator 11 is effective is prevented.

Before entering the insulator 11, the containers 2 are rotated by the second container turner 21 by 180° back to the starting position, i.e. with the respective container mouth 2a oriented upwards.

Furthermore, the rinser 20 is equipped with a pressure/climate system 25, which is set up to generate and maintain a defined atmosphere in the rinser housing 20a, comprising, for example, temperature and/or pressure and/or clean air quality, etc. The pressure/climate system 25 has at least one sterile air supply 25a, which introduces sterile air into the rinser 20, and at least one suction 25b, via which the atmosphere in the rinser housing 20a is sucked out. In this way, there is a continuous exchange of sterile air in the rinser 20. The suction 25b serves primarily as a sterile air suction, but it can additionally or alternatively function as a steam and/or condensate suction.

Preferably, the pressure/climate system 25 is set up to create and maintain an aseptic atmosphere in the rinser 20.

The pressure/climate system 25 is particularly preferably set up to generate at least a slight excess pressure in the rinser 20 compared to the ambient pressure, so that any ingress of impure air from outside is prevented by such a pressure barrier. Analogously, the insulator 11 preferably has at least a slight excess pressure compared to the rinser 20. In this way, a pressure gradient is created starting from the isolator 11, via the rinser 20 to the external environment, thereby ensuring an effective separation between the aseptic atmosphere in the isolator 11 and the non-sterile external environment.

The implementation of the pressure barrier by the rinser 20 can be carried out in a differentiated manner. The pressure/climate system 25 is preferably set up to generate a slight negative pressure relative to the environment in the disinfection area 22. This ensures that the disinfectant cannot escape into the environment. According to this exemplary embodiment, there is an overpressure in the condensate/drip area 23 and a negative pressure in the disinfection area 22 compared to the environment.

The rinser 20 in the function of a lock device acts as a “gray area” that is used synergistically for the disinfection of the containers 2. The containers 2 are not only (mechanically) freed of particles, but also disinfected, thereby achieving active packaging disinfection.

In addition to avoiding chemicals, which has a beneficial effect on sustainability, health, technical effort, for example with regard to suction, etc., the containers 2 do not have to be rinsed out afterwards to remove any chemicals. The available treatment time can therefore be completely used for ent germination can be used, or the treatment time can be shortened.

To the extent applicable, all individual features shown in the exemplary embodiments can be combined and/or exchanged with one another without departing from the scope of the invention.

Reference symbol list

1

Device for treating containers

2

container

2a

container mouth

3

Container feed

4

Transport facility

5

First container turner

10

Filling device

11

insulator

20

Rinser

20a

Rinser housing

21

Second container turner

22

Disinfection area

22a

Disinfection nozzle

22b

Disinfectant supply

23

Condensate/drip area

25

Pressure/air conditioning system

25a

Sterile air supply

25b

suction

F

Direction of conveyance

Claims (15)

Device (1) for treating containers (2), preferably in a beverage bottling plant, the device (1) having: a transport device (4) which is set up to transport the containers (2) along a conveying direction (F), preferably along a linear trajectory; a rinser (20) with a rinser housing (20a), through which the containers (2) can be transported along the conveying direction (F) by means of the transport device (4), the rinser (20) being set up to transport the containers (2) from the transport device (4 ) to disinfect the container (2) transported along the conveying direction (F) with a hot disinfectant. Device (1) according to Claim 1 , characterized in that the disinfectant is a chemically pure, gaseous substance, preferably steam, wherein the rinser (20) is preferably set up to apply the disinfectant to the containers (2) at a temperature of at least 100 ° C. Device (1) according to Claim 1 or 2 , characterized in that the containers (2) are essentially temperature-resistant, preferably the containers (2) are cans with a metallic component. Device (1) according to one of the preceding claims, characterized in that it further has an insulator (11) which, viewed in the conveying direction (F), is arranged immediately behind the rinser (20) and / or blocked with it, so that the rinser (20) acts as a lock, via which the containers (2) can be introduced into the insulator (11), the insulator (11) preferably being part of a filling device (10) for filling the containers (2) with a filling product, the Insulator (11) is preferably set up to generate and maintain an excess pressure compared to the pressure in the rinser housing (20a). Device (1) according to one of the preceding claims, characterized in that the rinser (20) has a pressure/climate system (25) which is set up to generate a controlled, preferably aseptic, atmosphere in the rinser housing (20a) and during to maintain the disinfection of the containers (2), the pressure/climate system (25) preferably being set up to generate and maintain an excess pressure in the rinser housing (20a) compared to the ambient pressure. Device (1) after Claim 5 , characterized in that the pressure/climate system (25) has at least one sterile air supply (25a) for introducing sterile air into the rinser housing (20a) and at least one suction (25b) for sucking the atmosphere out of the rinser housing (20a). Device (1) according to one of the preceding claims, characterized in that the rinser (20) has several areas, comprising: a disinfection area (22) which is set up to treat the containers (2), in particular their inner surfaces, with the disinfectant act on, and a condensate/drip area (23) arranged behind the disinfection area (22) as seen in the conveying direction (F), which is set up so that condensate and excess disinfectant can drip out, whereby the pressure/climate system (25) is preferably set up to generate a negative pressure relative to the environment in the disinfection area (22). Device (1) according to one of the preceding claims, characterized in that it further comprises: a first container turner (3) which is set up to turn the containers (2) upside down so that the respective container mouth (2a) for the treatment with the disinfectant is oriented downwards, and a second container turner (21), which is set up to move the containers (2) after treatment with the disinfectant into the starting position in which the respective container mouth (2a) is oriented upwards , to turn back, the second container turner (21) preferably being arranged in the rinser housing (20a). Method (1) for treating containers (2), preferably in a beverage bottling plant, the method comprising: Transporting the containers (2) along a conveying direction (F), preferably along a linear trajectory, by means of a transport device (4); Disinfecting the container (2) with a hot disinfectant during transport along the conveying direction (F) through a rinser housing (20a) of a rinser (20). Procedure according to Claim 9 , characterized in that the disinfectant is a chemically pure, gaseous substance, preferably steam, wherein the rinser (20) preferably applies the disinfectant to the containers (2) at a temperature of at least 100 ° C. Procedure according to Claim 9 or 10 , characterized in that the containers (2) are essentially temperature-resistant, preferably the containers (2) are cans with a metallic component. Procedure according to one of the Claims 9 until 11 , characterized in that , following disinfection in the rinser (20), the containers (2) are placed in an insulator (11) by means of the transport device (4), which is preferably part of a filling device (10) for filling the containers (2) with a Filling product is retracted so that the rinser (20) acts as a lock for the insulator (11), with an excess pressure in the insulator (11) preferably being generated and maintained compared to the pressure in the rinser housing (20a). Procedure according to one of the Claims 9 until 12 , characterized in that a controlled, preferably aseptic, atmosphere is generated in the rinser housing (20a) by a pressure/climate system (25) and is maintained during the disinfection of the container (2), the pressure/climate system (25) preferably having one Overpressure is generated and maintained in the rinser housing (20a) relative to the ambient pressure. Procedure according to Claim 13 , characterized in that the pressure/climate system (25) ensures a continuous exchange by means of at least one sterile air supply (25a) for introducing sterile air into the rinser housing (20a) and at least one suction (25b) for sucking the atmosphere out of the rinser housing (20a). of sterile air in the rinser housing (20a). Procedure according to one of the Claims 9 until 14 , characterized in that the containers (2) are turned upside down before disinfection using a first container turner (5), so that the respective container mouth (2a) is oriented downwards for treatment with the disinfectant, and the containers (2 ) after treatment with the disinfectant, using a second container turner (21), be turned back into the starting position, in which the respective container mouth (2a) is oriented upwards.

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