GB1012434A - Regenerative heat exchanger with heat-retaining mass movable in counter-current to the heat exchanging media - Google Patents

Abstract

1,012,434. Thermal regenerators. SVENSKA ROTOR MASKINER A.B. Nov. 17, 1961, No. 41199/61. Heading F4K. In a rotary-matrix counter-current flow regenerative heat exchanger having a heatretaining mass arranged within the rotor in arcuate sectors which are separated by damper elements controlled according to the position of the rotor, and are traversed successively by the heat imparting and heat-absorbing media in a direction opposite to that of the rotor, at least one intermediate connection is provided between the respective inlet and outlet connections for one or both of the media. The heat-retaining mass may consist of a series of coil springs 16, Fig. 4, or sets of sheet metal plates 17, with spacing members on wart-like projections, or corrugated sheet metal plates 18. The damper elements 2<SP>1</SP>, Fig. 1, are governed such that they always form shields 2<SP>11</SP> dividing the heat-retaining mass into two channels 1, one traversed by the heat imparting medium from an inlet 3 to an outlet 4 and the other by the heat-absorbing medium from an inlet 5 to an outlet 6. Between these connections are provided the intermediate connections 7 and 8, one 7 in the heat imparting medium channel to accept a partial stream of lower temperature medium roughly coinciding with the reduced temperature of the medium already flowing through this channel and the other 8 in the heat-absorbing medium channel to exhaust a partial stream of moderately heated medium. The sequential operation of the damper elements can be effected by mechanical means such as a stationary cam 25 or may be controlled by pneumatic, hydraulic or electrical means or may be effected automatically by counterweight. The rotor may be driven from friction rollers 14 which support the construction, or from a central shaft 15. To direct the flow of heat imparting medium from the main inlet towards the hub of the rotor the inlet connection 3<SP>1</SP>, Fig. 2 (not shown), can be mounted radially and contain guide vanes, also the outer damper elements can be kept closed in the zone adjacent the outer periphery of the rotor within the channel until the intermediate connections 7 or 8, Fig. 1, has been reached. The rotor can be divided into two axially adjacent sub rotors, Fig. 5 (not shown), which are separated by sealing means and in which partial streams of at least one of the heat imparting or heat absorbing mediums are admitted. The sealing between rotor and casing can be effected either by sprung slip-rings 19, Fig. 4, or by asbestos cord 21 held in place by springs 22.