Gas valve with proportional electromagnetic valve regulation and combustor air pressure feedback regulation functions

Abstract

The invention provides a gas valve with proportional electromagnetic valve regulation and combustor air pressure feedback regulation functions. The gas valve comprises a proportional valve and a self-suction valve. The upper end of an aluminum valve element of the proportional valve is connected with a valve clack, a valve deck is arranged at the lower end of a valve body, the periphery of a membrane is clamped between the valve body and the valve deck, the lower end of the aluminum valve element is connected with a center hole of the membrane, and the lower portion of the membrane is connected with an aluminum valve element reset mechanism; the valve deck is connected with a proportional electromagnetic valve which comprises a guide pipe, the upper portion of the guide pipe is connected with the valve deck, the lower portion of the guide pipe is connected with a lower valve base of the proportional electromagnetic valve, an exciting coil is connected to the outside of the guide pipe through a framework, a regulation movable core is assembled in the guide pipe, and a lower end cover is assembled at the inner hole in the lower section of the lower valve base; a shaft end is arranged at the lower end of the aluminum valve element and corresponds to the regulation movable core, the upper end of the regulation movable core abuts against a reset spring, the shaft end is sleeved with the reset spring, and the upper portion of the reset spring abuts against the valve deck; the lower end of the regulation movable core abuts against a pressure stabilization spring, the other end of the regulation movable core abuts against a lower end cover of the proportional electromagnetic valve, the side edge, corresponding to the pressure stabilization spring, of the lower valve base is connected with a feedback air pressure pipe joint, and the pipe joint is connected with a combustor. The gas valve is used for a gas water heater and has the advantage that output water temperature fluctuation is extremely small.

Description

technical field [0001] The invention belongs to the technical field of water heater valves, and in particular relates to a gas valve device. Background technique [0002] In the use of general water heaters in the prior art, it is common for the water temperature to fluctuate from high to low. One of the reasons is that due to the different stability of regional air sources, some families or areas with higher air source pressure output, that is, pressure When the working pressure of the proportional valve exceeds the upper limit of the national standard gas source, the working pressure of the proportional valve is high, and the phenomenon of vibration of the proportional valve and unstable outlet pressure often occurs, which directly affects the operation of the gas water heater; the second reason is that the proportional valve of the existing technology Due to the structural characteristics of the spool, the adjustment devices of the water heaters in the prior art are gener...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of poor structure of the gas valve in the prior art, relying solely on electrical control with large hysteresis, so as to cause large fluctuations in water temperature, and provide a gas valve that not only has electrical control, but also is equipped with wind pressure control, which This kind of air pressure control is direct control instead of indirect control, and the gas valve structure can achieve the excellent effect of timely and accurate adjustment and constant water temperature

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