Low-pressure working method of gas water heater

一种燃气热水器、工作方法的技术，应用在流体加热器、照明和加热设备等方向，能够解决未发现、低气压准确性不高、燃气热水器影响因素多等问题，达到用户体验好的效果

Active Publication Date: 2021-02-12
NINGBO FOTILE KITCHEN WARE CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Therefore, during the use of the gas water heater, it is not necessary to judge the low air pressure when the gas proportional valve can be adjusted, and there are many factors that affect the normal operation of the gas water heater. The accuracy of low air pressure is not high, and it may also be that the load caused by other factors cannot meet the target load
However, when the gas water heater is in the rated maximum load working state where the gas proportional valve cannot be adjusted, if low pressure occurs, it will have a greater impact on the normal operation of the gas water heater, and it is precisely in this state that the gas proportional valve is low. Air pressure judgment can effectively control the normal operation of gas water heaters, but this problem has not been found in the prior art and a solution to this problem has been proposed

Method used

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 1 As shown, the low-pressure working method of the gas water heater in this embodiment specifically includes the following steps.

[0030] S1. When the gas water heater is working, calculate and obtain the target load Q of the gas water heater according to the working parameters of the gas water heater. In this embodiment, the calculation method of the target load Q of the gas water heater is: according to the target outlet water temperature T set by the user, according to the inlet water temperature T0 and the inlet water flow L obtained from the gas water heater, and then calculate the target load Q of the gas water heater . Among them, for the gas water heater equipped with an inlet water temperature sensor, the inlet water temperature T0 of the gas water heater can be directly detected and obtained through the inlet...

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Abstract

The invention relates to a low-pressure working method of a gas water heater. The low-pressure working method comprises the following steps that S1, when the gas water heater works, a target load Q ofthe gas water heater is calculated to be obtained according to working parameters of the gas water heater; S2, whether the gas water heater needs to work in a full-load state or not is judged according to the calculated target load Q of the gas water heater, and if yes, S3 is conducted to conduct low-pressure judgment on the gas water heater; and if not, the gas water heater is controlled to worknormally; S3, the rotating speed of a fan in the gas water heater is controlled to be the preset rotating speed V at which the gas water heater can maintain combustion; S4, the actual load Q1 of thegas water heater is obtained through calculation; and S5, the Q1 is compared with the rated maximum load Q0 of the gas water heater, and then whether a low-pressure gas condition occurs or not is judged. According to the low-pressure working method of the gas water heater, low-pressure judgment can be conducted only when the gas water heater needs to work in the full-load state, and the low-pressure result obtained at the moment is more accurate and has more control and guidance significance.

Description

technical field [0001] The invention relates to the technical field of gas water heaters, in particular to a method for judging low air pressure of a gas water heater without water inlet temperature detection. Background technique [0002] In the cold season, the usage rate of gas water heaters is relatively high, and the primary pressure of the gas entering the household will be low, which will lead to a decrease in the rated heat load of the gas water heater, which will reduce the thermal comfort of the gas water heater and cause poor user experience. During the combustion process of the gas water heater, according to the target load, a certain gas proportional valve opening and fan speed will be set. When the primary pressure is low, the gas volume will be significantly reduced under the same proportional valve opening. Working at the set fan speed will cause a large deviation in the air-fuel ratio, resulting in a decrease in heat load. Therefore, when the gas water heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 魏苗苗朱海龙沈文权吴帅原世超
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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