Patent GB-1262992-A (GB)
Title: Centrifugal absorption air conditioner
Inventor: GAMMILL OSCAR ELBRIDGE JR
IPC: F24F8/125
Filed: 1969-03-06
Abstract: 1,262,992. Refrigerating; air conditioning. O. E. GAMMILL Jnr. 6 March, 1969 [6 March, 1968], No. 11981/69. Headings F4H and F4V. An absorption refrigeration cycle is performed entirely within a vessel 32 which is rotated by a motor 22. The interior of the vessel (Fig. 3) is divided by partitions 108, 112, 114 and an annular projection 110 with a condenser section C, an evaporator section E, and absorber section A, a heat-exchange section H/E and a generator section G, annular gaps being provided between the partitions and the vessel wall. A central tube 104 has apertures 106 in its upper end, apertures 107 in its lower end within the condenser section, and centrifugally actuated valves 124 within the evaporator section. The generator section is finned and is divided by a cylindrical partition 116 into generating and separating sections X and Y. The latter sections inter-communicate via radial tubes 118 the outer ends of which have V-notches 120. In operation, the vessel is rotated so as to distribute solution uniformly over the inner surface of the vessel, the generator is heated, and refrigerant vapour passes through tubes 118 to separator Y inducing a flow of atomized liquid solution therewith. The vapour passes through apertures 106, tube 104 and apertures 107 to the condenser, condensed refrigerant passes to the evaporator around the partition 108, refrigerant vapour from the evaporator passes to the absorber through the centre of annulus 110, and strong solution passes from separator Y to the absorber via tubes 122. There is a limited liquid communication between the evaporator and absorber via holes (not shown) in annulus 110. Tubes 122 are immersed in weak solution passing to the generator in the heat exchange section. Valves 124 are closed.  Heating.-The vessel 32 may be used to provide heat by discontinuing cooling of the absorber and generator sections and switching motor 22 to a lower speed so that springs 132 overcome the centrifugal forces acting on valves 124 and the valves open to supply refrigerant vapour to the evaporator section. Air conditioning unit.-As shown in Fig. 2 the vessel 32 is mounted in a housing 12, the generator and its associated gas burner 38 are enclosed by a casing 36 having inlet and outlet tubes 40, 44 for combustion air and gases, filter pads 64, 72 surround sections H/E, A and E and water sprays 46, 48 cool sections A and C respectively. The water is collected in pans 60, 76 and returned to the sprays via syphons 68, 80. Air to be filtered and either heated or cooled and humidified passes through inlet 82, over section E and through outlet 88 containing a fan 90. Air for assisting the cooling of section A is drawn through an inlet 86 and discharged through outlet 26 by a fan 20 driven by motor 22. A centrifugal clutch 21 ensures that the fan is disengaged when the motor speed is reduced for the heating cycle. The interior of vessel 32 may be modified to provide a double-effect generator section and two stage evaporator and absorber sections (Figs. 13-15, not shown).