A control method of a fully premixed gas water heater and a gas water heater
A technology of gas water heaters and control methods, which is applied in the direction of combustion control, combustion methods, fluid heaters, etc., can solve the problems of easy tempering, reduce the full premixed combustion load, etc., and achieve the effect of not easy tempering
Active Publication Date: 2021-11-12
VATTI CORP LTD
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Problems solved by technology
[0003] In view of this, the main purpose of the present invention is to provide a control method for a fully premixed gas water heater, which solves the problems that are prone to occur when the gas water heater pipe network pressure fluctuates, the air inlet pressure fluctuates, and the external wind pressure fluctuates in the prior art. Flashback phenomenon, the problem of reducing the load of fully premixed combustion
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Embodiment Construction
[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] Embodiment 1 of the present invention provides a control method for a fully premixed gas water heater, such as figure 1 As shown, the method includes:
[0031] Turn on the gas water heater, and collect the current air flow, fan flow, and excess oxygen content after combustion of air and gas;
[0032] If the current air flow rate, fan flow rate, and excess oxygen content after combustion of air and gas are consistent with the corresponding preset standard values, the gas water heater does not perform load control;
[0033] If the current air flow is inconsistent with the preset standard val...
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The invention discloses a control method for a fully premixed gas water heater. The method comprises: turning on the gas water heater, collecting the current air flow, fan flow and excess oxygen content; if the current air flow is inconsistent with the preset standard value, and the fan flow And when the air and excess oxygen content are consistent with the corresponding preset standard values, adjust the current air flow input by the gas water heater so that the current air flow is consistent with the preset standard value; if the current excess oxygen content is inconsistent with the preset standard value , and when the air flow rate and fan flow rate are consistent with the corresponding preset standard values, adjust the current air flow rate input by the gas water heater so that the current excess oxygen content is consistent with the preset standard value. The present invention effectively avoids backfire phenomenon and does not reduce full premix combustion load when the gas water heater fluctuates by adjusting the current gas flow, air flow and fan flow.
Description
technical field [0001] The invention belongs to the technical field of gas water heater control, and in particular relates to a control method of a fully premixed gas water heater and a gas water heater. Background technique [0002] Among the existing gas-fired water heaters, according to the combustion method of gas, especially the mixing ratio of air and gas, they can be divided into full premix combustion models and partial premix combustion models. Among them, full premixing has the following characteristics: air and gas are fully mixed according to the chemical equivalent ratio before combustion, and then ignited and burned, which has many advantages, such as full combustion of gas, high volumetric heat intensity, high thermal efficiency, and harmful emission indicators Low, etc.; however, when the pipe network pressure fluctuates and the external wind pressure fluctuates, full premix combustion is prone to flashback, and it is also possible to reduce the load of full ...
Claims
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IPC IPC(8): F24H9/20F23N3/00
CPCF23N3/005F24H9/2035
Inventor 覃进武潘叶江
Owner VATTI CORP LTD