GB252373A - Process and apparatus for the exchange of heat between gaseous, vapour like or liquid bodies - Google Patents

Abstract

252,373. Maschinenfabrik Ing. H. Simmon. May 19, 1925, [Convention date]. Fluid-friction apparatus; cooling and heating parts. - A hollow drum - shaped ribbed body traversed by one medium is rotated in a ventilator casing through which the other medium is moved by the. friction between the medium and the ribs which extend in the direction of the rotary movement. As shown in Figs. 1 and 2, for the exchange of heat between gases, the rotatable body comprises sheet - metal rings 1 spaced apart by distance rings 2 and secured to a disc 4 by bolts 3. The disc 4 is fixed to a shaft 9 driven by a pulley 8 and the body is enclosed in a casing 10 with inlet and outlet openings 11, 12 for hot gases, which are entrained and moved through the casing by the rotating body. A pipe 13 having radial blades 14 projects from the side of the casing 10 into the rotary body, cold air being admitted around this pipe and the heated air drawn off through it. Centrifugal action forces the cold air into the spaces between the ribs 1, displacing air already heated, and also forces soot, ashes, &c. in the hot gases through a slot to a chamber 15, from which they can be removed by a worm 16. Fig. 3 shows a modification in which the ribs are formed by a helically wound metal strip 17, between the convolutions of which is arranged a helically wound bar 18 mounted by spiders 19 on a shaft 20 driven by a pulley 21. The casing 22 has an inlet 23 and outlet 24 for hot gases arranged so that the gases are impelled through the casing by the helical rib 17, the air being forced through the rotating body by a fan 25 and discharged at 26. Spiral ribs running in opposite directions may be cast inside and outside the rotating cylinder so that the ribs impel both the hot gases and the air in opposite directions. In further modifications intended for heating liquids the rotatable body comprises two hoods 28, Fig. 5, connected to discs 30 fixed to a spindle 29, the hoods being mounted on hollow journals 27 for the supply and discharge of the liquid. Ribbed pipes 31 are mounted between the discs 30 and the body is enclosed in a casing 33 with inlet and outlet openings for the hot gases, arranged so that the body moves the hot gases through the casing by fluid friction. Centrifugal action causes the cold liquid in the inlet hood 28 to displace the heated liquid in the pipes 31, rendering a pump unnecessary. Adjustable deflecting plates for the hot gases may be fitted in the casing. The Specification as open to inspection under Sect. 91 (3) (a) comprises also statements that the ribs may be omitted or replaced by pins. This subject-matter does not appear in the Specification as accepted.