Gas distributing rod, gas distributing rod assembly, burner and water heater

Abstract

The invention relates to a gas distributing rod, a gas distributing rod assembly, a burner and a water heater. A gas distributing cavity and a guiding cavity communicating with the gas distributing cavity are formed in the gas distributing rod. The gas distributing cavity comprises at least two sub-gas distributing cavities, parts of the at least two sub-gas distributing cavities commonly communicate with the guiding cavity, and the other part of the at least two sub-gas distributing cavities optionally communicates with the guiding cavity. The gas distributing rod is provided with a gas inletcommunicating with the guiding cavity, and the gas distributing rod is provided with a plurality of gas nozzles communicating with the at least two sub-gas distributing cavities respectively. Gas canenter the sub-gas distributing cavities commonly communicating with the guiding cavity through the guiding cavity to be burned, the remaining sub-gas distributing cavities which can communicate optionally can be kept closed all the time to lower the power of the burner, so a pipeline preheating mode is started. Under the pipeline preheating mode, communication of the remaining sub-gas distributing cavities does not need to be discontinuously controlled, an igniter does not need to be frequently turned on and off, and the service life of the burner is prevented from being consumed.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to a gas distribution rod, a gas distribution rod assembly, a burner and a water heater. Background technique [0002] Along with economic development and social progress, water heaters appear in people's daily life. A water heater refers to a device that increases the temperature of cold water into hot water within a certain period of time through various physical principles. According to different principles, it can be divided into electric water heaters, gas water heaters, solar water heaters, magnetic energy water heaters, air energy water heaters and heating. water heater etc. Among them, gas water heaters are widely used in people's daily life. [0003] Generally, when the water flow rate is low when the water pressure is low at the upper level, or the hot water needs a small temperature rise in summer, the hot water will be too hot in summer, and the comfort of th...

AI Technical Summary

Problems solved by technology

However, when the water heater is in the pipeline preheating mode, due to the low load ratio of the burner, the burner will stop burning after the return water temperature reaches the set temperature. After the return water cools down to the operating point temperature, the unit will ignite and burn. The water heater is shut down repeatedly, and the combustion system works intermittently, which will reduce the service life of the water heater unit

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