Steam generator with extra functional unit - which operates at higher pressure than main unit with supply pump controlled thermostat and setting motor to avoid second steam network

摘要

The steam generator (1) has an extra steam generator (2) operating at a higher pressure than the main unit connected to the steam network. This extra generator is supplied with water via a heat exchanger heated by the condensed steam. The water supply pump has a quantity controller for the quantity flowing between supply water tank and heat exchanger. Thermostats are located at the outputs of the heat exchanger and control the quantity conveyed by the supply pump by varying the eccentric drive setting of the stepping motor which drives the pump through gearing. No second steam network of lower pressure is required. The supply water tank is not overheated.