Nozzle sheet, combustor and gas water heater

Abstract

The invention provides a nozzle sheet, a combustor and a gas water heater. The nozzle sheet comprises a mixed gas flow channel shell, a nozzle sheet outer shell, a mixed gas flow channel is formed inthe mixed gas flow channel shell, the mixed gas flow channel is provided with a first outlet, the first outlet is covered with a nozzle sheet cover, the mixed gas flow channel shell is located in a nozzle sheet shell, a secondary air flow channel is formed between the mixed gas flow channel shell and the nozzle sheet shell, the secondary air flow channel is provided with a second outlet, and the second outlet surrounds the nozzle sheet cover. According to the nozzle sheet, the combustor and the gas water heater, secondary air can surround the nozzle sheet cover, secondary air distribution is more uniform, combustion noise can be lowered, and the gas combustion quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of burner manufacture, and in particular relates to a fire radiator, a burner and a gas water heater. Background technique [0002] Along with the raising of people's living standard, gas water heater has been widely popularized as a kind of household appliance commonly used. At present, the combustion principles of the burners in gas water heaters on the market are mainly divided into two types. One is the simple mixed combustion of primary air and gas. In this way, the mixing uniformity and composition ratio of air and gas are required. All of these are relatively high, which leads to relatively high requirements for the control technology, process manufacturing, and runner matching parts of the corresponding fire radiators, burners and gas water heaters. The manufacturing cost of the product is too high, which brings obstacles to the purchase of products ; The other is the combustion of primary air and g...

AI Technical Summary

Problems solved by technology

At present, the combustion principles of the burners in gas water heaters on the market are mainly divided into two types. One is the simple mixed combustion of primary air and gas. In this way, the mixing uniformity and composition ratio of air and gas are required. All of these are relatively high, which leads to relatively high requirements for the control technology, process manufacturing, and runner matching parts of the corresponding fire radiators, burners and gas water heaters. The manufacturing cost of the product is too high, which brings obstacles to the purchase of products ; The other is the combustion of primary air and gas mixed with secondary air, that is, the gas is initially mixed with primary air and then mixed with secondary air for combustion. Manufacturing difficulty, control requirements, and production costs are relatively low, so it has been widely used. However, the current burner with primary air and secondary control has the problem of uneven distribution of secondary air. Specifically, the current In some burners, the distribution of secondary air depends on the gap between two adjacent fire baffles, that is, the distribution channel of the secondary air in the prior art has nothing to do with the internal structure of the fire baffle, but only when it is in the fire. It is related to the flow channel and related components outside the sheet arrangement, which makes the distribution of secondary air uneven, and the secondary air flow is prone to disorder, resulting in high noise and insufficient gas combustion during burner operation, posing safety hazards

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