| 摘要 |
FIELD: power industry.SUBSTANCE: two-stage gas burner consists of a gas valve of the second stage, which is connected to a control unit, the latter is connected to draft sensor, an electromagnetic valve, an operating temperature sensor, which includes a microswitch, with that, the gas valve of the second stage is connected to the main burner; with that, the two-stage gas burner also includes a gas valve of the first stage, which is connected to the control unit, and the latter is connected to a delivery gas sensor and a limit temperature sensor.EFFECT: invention allows providing instantaneous (within 2-3 seconds) trip of a gas valve of the second stage and provides high reliability of supply of heat and hot water to consumers.2 dwg |
