GB225109A - Improvements in or relating to machinery or apparatus for effecting interchange of heat - Google Patents

Abstract

225,109. Seligman, R. July 18, 1923. Sterilizing milk &c.- Plates with facial ribs and grooves adapted when assembled to furnish inter-plate zig-zag channels for the passage of the heat-exchanging fluids, as described in Specification 223,033, [Class 64 (iii), Surface apparatus &c.], are arranged in an apparatus so that the operations of heating or cooling a fluid, or both, are simultaneous or successive and may be conducted in stages or regeneratively. In the example shown in the Figure, the apparatus comprises three sections, a regenerative section being interposed between a cooling and a heating section. Cold milk, for example, to be heated flows to the regenerative section at r, wherein it is preheated by hot milk admitted at s from a hot milk holder, the warmed milk passing out at r<1> to a filter if desired and thence to the heating section at u into which hot water is admitted at t and emerges at t<1>. Heated milk from this section flows out at u<1> to a holder and thence to the regenerative section at s and by way of s' to the cooling section emerging at s<2> cooled by brine passing from v to v<1>. The filtering may be effected in a filter plate assembled in the apparatus. In a modification, the regenerative operation may be effected indirectly through the medium of water warmed by the hot milk and used to preheat the cold milk. Communication between sections may be arranged by way of ports in the plates, and removable plugs may be used to varv the method of passage. Thus, heating might be effected with parallel flow through several plates followed by cooling with series flow.