DEVICE FOR MAINTAINING WATER TEMPERATURE IN LOCAL WATER HEATING SYSTEM Russian patent published in 1996 - IPC

FIELD: heating systems. SUBSTANCE: feed of lump fuel to boiler is regulated depending on temperature of water in heating system. As temperature of water rises, larger amount of water is fed to expansion tank 8 through flexible pipe line 11 due to expansion of water. As a result, tank 8 deflects on springs 12 making gate 3 lower through flexible cable 10. Delivery of lump fuel through fuel line 2 to boiler 5 reduces owning to which temperature of water in heating system drops and expansion tank together with gate takes another position. EFFECT: enhanced reliability. 3 cl, 2 dwg