| 摘要 |
1,136,122. Thermal regenerators. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 8 March, 1966 [11 March, 1965], No. 10112/66. Heading F4K. The matrix 1 of a rotary regenerative heatexchanger comprises alternate corrugated and non-corrugated concentric cylindrical plates (2, 3, Fig. 4) of glass-ceramic material of low coefficient of expansion, forming passages for the flow of the heat-exchange media. The housing of the heat-exchanger comprises two parts 6, 7 formed of glass ceramic material of substantially equal coefficient of expansion to the matrix 1, the two parts touching in a plane perpendicular to the axis of the matrix 1, and each part 6, 7 being provided with a mating flange 14, 15, respectively. A gap seal 8 of width no greater than half the hydraulic diameter of the passages in the matrix 1 is formed between the matrix 1 and the housing, and also between the matrix 1 and a partition (13, Fig. 2) which separates the two heat-exchange media. The rotatable shaft 5 to which the matrix 1 is fixed may also be formed of glass-ceramic material. The two parts 6, 7 of the housing are clamped together either by simple bolt and nut connections (Fig. 5) incorporating a spring (18) to maintain the seal in spite of different expansion of the bolt and the flanges, or by means of a ring member (20, 21, 22, Fig. 7) of channel-shaped cross-section, split at at least one point in its circumference and provided, at either side of the split, with projections (24, 25), which are clamped together by a bolt and spring mechanism. The heatexchanger may be used to preheat air for combustion in a hot-gas engine (Figs. 8-10), by means of the waste gases from the engine.
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