Patent GB-329733-A (GB)
Title: Improvements in or relating to apparatus for pasteurizing beer and other liquids
IPC: A23L3/08
Filed: 1929-03-08
Abstract: 329,733. Graham, R. F. March 8, 1929. Pasteurizing beer &c.-Beer or other liquid enclosed in sealed containers is pasteurized in apparatus comprising a platform or carrier 5 for the containers, a guide 19 for engaging the containers 18 and causing them to move across the carrier on relative movement of the carrier and guide and means for directing streams or a spray of pasteurizing liquid upon the containers. In the construction described, the carrier 5, Fig. 5, is of ring form rotatably supported on rollers 6, 7 on frame members 1, 2 and is made of plates 15 between each pair of which is arranged a raised tapered member 16 narrow slots 17, Fig. 3, being left therebetween. The containers 18 are carried on the plates 15 and bear against the members 16. The carrier 5 is rotated by the engagement with a rack 8 thereon of a pinion 9 on a shaft 10 driven through gearing 11, 12, 13 from a motor 14. A spiral guide 19 of metal or other plate is supported by the frames 1, 2 above the carrier, the containers 18 being fed thereto at a point 21 on the inside and removed at a point 22 on the outside, the feed and removal being manual or automatic. The containers receive a spray of pasteurizing liquid from a series of perforated trays 23 each divided by partitions 24 into compartments 26 - - 31, Fig. 9. and supplied with pasteurizing liquid from a high temperature heater 32, Fig. 4, and a. low temperature heater 33. The heater 32 is connected to pipes 34, 35 extending around outside the apparatus and having radial pipes 36 branching therefrom and connected to pipes 37 arranged over the middle compartment 29 of the trays 23 and having outlets on their lower sides. The pipes 37 are also connected to mixing valves 39, 40 by pipes 38. The low temperature heater 33 is connected by a pipe 41 to pipes 42 extending around the inner edge of the apparatus and having branches 43 from which extend perforated branches 44, 45 over the first and last compartments 26, 31 of the trays 23. The branches 44 are connected by pipes 47 with mixing valves 40 and branches 45 by pipes 46 with valves 39. The outlets from valves 39 are above compartments 30 and those from valves 40 above compartments 27, 28. The mixing valve 40 consists of two chambers 49, 50, Fig. 8, one connected to a pipe 47 supplying low temperature fiuid and the other to a pipe 38 for high temperature fluid Transverse connections 51, 52 having outlets 48 are provided between the chambers. Four valves 53 allow the temperature of the liquid discharged from outlets 48 to be controlled. The mixing valve 39 is a single valve having one outlet. By these means pasteurizing liquid of low temperature, e.g. 100-110‹ F., is supplied to the innermost compartment 26, liquid of higher temperature, e.g. 120‹ F. and 130‹ F., to compa.rtments 27, 28 and the hottest liquid, e.g. at a temperature of 140‹ F., to the centre compartment, the temperature being decreased in the succeeding compartments, e.g. to 120‹ F. for compartment 30 and to 100-110‹ F. for compartment 31. The pasteurizing liquid passes through the apertures 17 between plates 15 and members 16 to collecting trays 54, Fig. 1, divided by partitions 55, 56 into three compartments. The liquid from the outer and inner compartments is returned through a collecting pipe 57 to the tank 60 for supplying the low temperature heater 32 and that from the middle compartment through a pipe 59 to the tank 58 supplying heater 33. The trays 23, 54 are preferably removable for cleaning and the whole apparatus is enclosed in a light casing having provision for cleaning and repairing. In other forms, more or fewer heating stages may be employed. The platform of the carrier may be made of tapered radial plates having their side edges bent downwards and connected by bolts and having parallel grooves of a width to receive the containers milled &c. thereon, holes being drilled between the grooves to conduct the pasteurizing liquid to the drainage trays. The Provisional Specification describes a carrier of flat ring form preferably sloping downwards from the inside to the outside.