Device and method for pasteurizing and filling medium into containers

Patent metadata

Field	Value
Publication number	US-11224240-B2
Application number	US-201815980312-A
Country	US
Kind code	B2
Filing date	May 15, 2018
Priority date	Sep 4, 2017
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A device for pasteurizing and filling medium into containers includes a short time heating system for pasteurizing the medium, a single buffer container downstream of the short time heating system for receiving the medium, and a rotary filling device downstream of the buffer container. The filling device is connected to the buffer container in a buffer-free manner and pipes and/or one or more rotary distributors are disposed between the filling device and the buffer container. A method for pasteurizing and filling medium into containers, where filling the containers with the medium is performed by way of a device in a buffer-free manner using a filling device, includes: pasteurizing the medium in the short time heating system, buffering the pasteurized medium in the buffer container, and filling the pasteurized medium into the containers. The pasteurized medium is transported in a buffer-free manner from the buffer container to the filling device.

First claim

What is claimed is:

1. A device for pasteurizing and filling medium into filling containers, the device comprising:
a short time heating system comprising one or more heat exchangers to pasteurize the medium;
a single buffer container disposed downstream from the short time heating system to receive the pasteurized medium;
a rotary filling device disposed downstream from the single buffer container, wherein the rotary filling device is in communication with the single buffer container without presence of an additional buffer container, wherein the rotary filling device further comprises:
a rotary distributor configured to: transfer the pasteurized medium from a medium supply line to a first filling line; and transfer gas from a gas supply line to a second filling line;
a filler valve configured to fill the filling containers, wherein the filler valve is configured to receive the pasteurized medium from the first filing line and to receive the gas from the second filling line; and
a degassing line provided for degassing and being coupled to the filler valve.

2. The device of claim 1 , wherein the single buffer container is a vessel or ring container of the rotary filling device.

3. The device of claim 1 , wherein the single buffer container is a buffer tank of the short time heating system.

4. The device of claim 1 , wherein the short time heating system comprises:
a primary circuit for the medium;
a secondary circuit, wherein the secondary circuit is a. heating circuit to heat the medium in the primary circuit;
a first heat exchanger, wherein the primary circuit runs through the first heat exchanger;
a second heat exchanger connected downstream from the first heat exchanger;
a heat retention section downstream from the second heat exchanger;
a third heat exchanger, wherein the secondary circuit runs through the second heat exchanger and the third heat exchanger;
a cooling circuit; and
a fourth heat exchanger, wherein the cooling circuit is in thermal contact with the primary circuit via the fourth heat exchanger.

5. The device of claim 4 , further comprising a control device configured to:
overflow the medium into an inlet of the short time heating system;
fill the single buffer container up to a maximum filling level;
stop supply of the medium to the device responsive to filling the single buffer container to the maximum filling level;
stop the primary circuit under defined conditions; and
continue operating the secondary circuit of the second heat exchanger and successively increase temperature of the secondary circuit to compensate for loss of energy in the primary circuit when restarting, wherein pressure in the short time heatin system is to be maintained above a saturation pressure.

6. The device of claim 4 , further comprising a control device configured to restart the primary circuit for a predetermined period of time responsive to a first temperature of the heat retention section dropping below a minimum value after flow of the medium in the primary circuit has stopped, wherein the minimum value corresponds to a second temperature for reheating the medium in the primary circuit by the secondary circuit.

7. The device of claim 1 , wherein the rotary filling device comprises a proportional valve for at least one of controlling or regulating filling flows to fill the pasteurized medium into one or more of the filling containers.

8. The device of claim 7 , wherein the proportional valve is to at least one of control or regulate predetermined filling flows or stepless filling flows to fill the pasteurized medium into the one or more of the filling containers.

9. The device of claim 1 , wherein the rotary filling device is a filler carousel.

10. The device of claim 1 further comprising a preloading device to preload the single buffer container with at least one of carbon dioxide or a carbon dioxide-nitrogen mixture.

11. The device of claim 1 , further comprising a control device configured to reduce performance of the short time heating system up to 50% of a rated performance of the short time heating system in proportion to performance of the rotary filling device responsive to the performance of the rotary filling device being reduced.

12. The device of claim 1 , further comprising a control device configured to increase performance of the short time heating system up to a rated performance of the short time heating system in proportion to performance of the rotary filling device responsive to the performance of the rotary filling device being increased.

13. The device of claim 1 , further comprising a control device configured to control a maximum filling level of the single buffer container to prevent at least one of measurable or gustatory impairment of quality of the medium responsive to mixing the medium with overpasteurized medium, wherein a ratio between content of the short time heating system and a container volume of the single buffer container is between 0.05:1 and 0.5:1.

14. The device of claim 1 , further comprising a control device configured to at least one of:
perform temperature control and maintain constant a predetermined number of pasteurization units (PUs) of the medium; or
perform a defined overflow of the medium back into an inlet of the short time heating system.

15. The device of claim 1 , further comprising a control device configured to operate the short time heating system at a minimum performance responsive to the rotary filling device stopping, wherein the minimum performance is an operation at 50% of a rated performance of the short time heating system.

16. The device of claim 1 , further comprising a control device comprising a counter, wherein the counter is to sum pasteurized units (PUs) that are received by the medium.

17. The device of claim 16 , wherein the control device is configured to discard the medium or mix the medium with contents of the single buffer container responsive to supply of the medium to the device stopping after a. predetermined standstill period has expired or after a summed number of PUs exceeds a threshold number of PUs.

18. The device of claim 1 , wherein the single buffer container comprises one or more of guide devices, guide elements, or baffles.

19. The device of claim 1 , wherein a filling level of the single buffer container is above the filler valve of the rotary filling device.

20. A method comprising:
pasteurizing a medium in a short time heating system comprising one or more heat exchangers;
receiving the pasteurized medium in a single buffer container disposed downstream from the short time heating system;
buffering the pasteurized medium in the single buffer container;
transporting the pasteurized medium in a buffer free manner from the single buffer container to a rotary filling device disposed downstream from the single buffer container, wherein the rotary filling device is in communication with the single buffer container without presence of an additional buffer container, wherein the rotary filling device further comprises a rotary distributor configured to: transfer the pasteurized medium from a medium supply line to a first filling line; and transfer gas from a gas supply line to a second filling line via; and
filling the pasteurized medium into filling containers using a filler valve of the rotary filling device, wherein the filler valve is configured to receive the pasteurized medium from the first filing line and to receive the gas from the second filling line, and wherein a degassing line is provided f

Assignees

• Krones Ag

Inventors

• Feilner Roland
• Runge Torsten
• Hoeller Stefan
• Oehmichen Thomas

Classifications

• A23B70/30

  by heating · CPC title

• A23B2/003

  Control or safety devices for sterilisation or pasteurisation systems · CPC title

• A23B2/001

  Details of apparatus, e.g. pressure feed valves or for transport, or loading or unloading manipulation · CPC title

• A23B11/133

  and progressively transported through the apparatus · CPC title

• A23B2/42

  while they are progressively transported through the apparatus · CPC title