US 12,331,271 B2
System and method for preserving the contents of beverage containers
Richard Berresford, Ipswich (GB); and Russell Barker, Lawford (GB)
Assigned to BERMAR (INTERNATIONAL) LTD., Ipswich (GB)
Appl. No. 17/759,413
Filed by BERMAR (INTERNATIONAL) LTD., Ipswich (GB)
PCT Filed Dec. 21, 2020, PCT No. PCT/GB2020/053328
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/152283, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2001221 (GB), filed on Jan. 29, 2020.
Prior Publication US 2023/0069242 A1, Mar. 2, 2023
Int. Cl. C12H 1/14 (2006.01); B65B 31/04 (2006.01)
CPC C12H 1/14 (2013.01) [B65B 31/047 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of preserving a liquid in a container, comprising:
connecting a fluid flow line between a headspace of the container and a pressure modifying device;
performing an operating cycle of the pressure modifying device by:
operating the pressure modifying device to start a gas flow in the fluid flow line;
during the gas flow, measuring a dynamic pressure Pd in the fluid flow line;
comparing the measured dynamic pressure Pd to an initial target dynamic pressure value Pt;
determining that the measured dynamic pressure Pd meets the initial target dynamic pressure value Pt;
in response to the determining step, operating the pressure modifying device to stop the gas flow;
after the gas flow is stopped, measuring a static pressure Ps in the fluid flow line;
determining a pressure correction Pcorr based on a difference between the measured static pressure Ps and a target static pressure value Pstat; and
applying the pressure correction Pcorr to the initial target dynamic pressure value Pt to obtain an updated target dynamic pressure value Pt′ for use in a subsequent operating cycle of the pressure modifying device.