Fuel gas distribution piece, fuel gas water heater and sectional combustion method thereof

Abstract

The invention relates to a fuel gas distribution piece, a fuel gas water heater and a sectional combustion method thereof. The fuel gas distribution piece includes a shell and three sectional valves arranged on the shell; the shell is provided with an air inlet, a normally open air cavity and three adjusting air cavities, the normally open air cavity and the adjusting air cavities communicate withthe air inlet and are provided with air outlets correspondingly, the number of the air outlet on the normally open air cavity is one, and the number of the air outlets on the three adjusting air cavities is one, two and two or one, one and three; and each sectional valve is used for opening or closing a channel between the corresponding adjusting air cavity and the air inlet. According to the fuel gas distribution piece, combustion of six sections of power of one, two, three, four, five and six rows of fire can be realized through the three sectional valves, it can be ensured that any two adjacent sections of power in the six sections of power have a large enough overlapped area, the problem that outlet water temperature is suddenly hot and suddenly cold is solved, and good user experience is brought to users.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a gas distributor, a gas water heater and a segmented combustion method thereof. Background technique [0002] Updraft gas instant water heaters are usually equipped with 6 rows of fire, and their combustion mode is generally a two-stage combustion mode—either 2 rows of fire or 6 rows of fire combustion mode, or 3 rows of fire or 6 rows of fire combustion mode. However, the above-mentioned two-stage combustion mode is unreasonable, especially in the 2-row fire or 6-row fire combustion mode, the maximum power of the 2-row fire and the minimum power of the 6-row fire have no overlapping area or the overlapping area is too small, and there is still a gas source Or the deviation of factors such as pressure, which will inevitably lead to a break in the power section of the water heater, forcing the solenoid valve used for segmentation to switch back and forth, resulting in fluct...

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Problems solved by technology

However, the above-mentioned two-stage combustion mode is unreasonable, especially in the 2-row fire or 6-row fire combustion mode, the maximum power of the 2-row fire and the minimum power of the 6-row fire have no overlapping area or the overlapping area is too small, and there is still a gas source Or the deviation of factors such as pressure, which will inevitably lead to a break in the power section of the water heater, forcing the solenoid valve used for segmentation to switch back and forth, resulting in fluctuations in the outlet water temperature and making it difficult to maintain a constant temperature, which greatly reduces the user experience

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