GB1462901A - Heat exchangers - Google Patents

Abstract

1462901 Transverse-flow fans TOYOTA CHUO KENKYUSHO KK 20 June 1974 [26 June 1973] 27357/74 Heading F1C [Also in Division F4] In a rotary heat exchanger for heat exchange between a liquid and air having a rotor 6 comprising a plurality of a spaced apart hollow annular elements 17 coaxially disposed in planes extending perpendicularly to the rotor axis with annular arrangements of curved blades 16 extending between and connected to adjacent elements 17, liquid is supplied to and withdrawn from the annular elements 17 by means of diametrically opposed distribution and collection ducts 18 and 19. Liquid enters a chamber 7 at one end of the rotor via a stationary pipe 10 and a plurality of radially extending distribution passages 10A. The chamber 7, which includes a plurality of straight or curved blades 11 arranged to rotate with the rotor, communicates with the distribution duct 18 which in turn communicates with the annular elements 17 via openings 17B; liquid leaving the elements 17 via openings 17C and collected in duct 19 is led into a chamber 8 at the other end of the rotor and is discharged therefrom by way of a stationary outlet guide structure 13 and a pipe 12. Preferably the guide structure 13 is in the form of a spider comprising a series of arcuate passages leading inwardly from tangentially disposed inlet ports 13A towards the pipe 12. In an alternative embodiment Fig. 5 (not shown) the chambers 7 and 8 are located at the same end of the rotor. In addition to inducing and guiding a flow of air through the rotor, the blades 16 also serve as heattransfer fins and may be made from corrugated strip material see Fig. 11 (not shown); louver segments (16A), Figs. 12a and 12b (not shown) may be stamped and bent out from the surface of the corrugated strip and arranged along arcuate or suitably curved lines extending in the direction of rotation of the rotor. The rotor 6 is located in a passage 3 defined by casing members 1 and 2, with air entering through an inlet 4 and being discharged through an outlet 5. In order to maintain a constant air delivery temperature the rate of air-flow through the rotor can be controlled by a throttle plate 22 pivotable on a shaft 24. The angular position of a plate 21 pivotable on shaft 23 controls the position of the Rankine's vortex 20 within the rotor.