Gas water heating equipment with reverse air resisting capability
A gas-fired hot water and equipment technology, applied in lighting and heating equipment, combustion control, water heaters, etc., can solve the problems of misoperation of the control unit, smoke cannot be discharged smoothly, and temperature rise of the water heater, etc., so as to avoid misoperation Effect
Active Publication Date: 2014-02-26
VAILLANT WUXI HEATING EQUIP
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Problems solved by technology
For example, when the fan fails, the flue gas cannot be discharged smoothly, which will cause the temperature inside the water heater to rise. When the temperature exceeds a safe temperature set by the temperature sensing switch, the combustion and heating of the water heater will stop.
However, this method actually detects the change of wind pressure indirectly, and the change of temperature in the water heater is affected by many factors, that is to say, the change of temperature does not necessarily directly reflect the change of wind pressure, so this kind of The method still causes the possibility of misoperation of the control unit
Method used
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[0037] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.
[0038] Both gas water heaters and gas boilers use combustible gas as fuel, such as natural gas, city gas, liquefied petroleum gas, biogas, etc., to heat hot water by burning combustible gas to meet the needs of users for domestic water and / or central heating. In the following embodiments, the present invention will be described by taking a gas water heater as an example, but the present invention can also be applied to a gas boiler.
[0039] First refer to Figure 1 to Figure 3 A specific embodiment of the gas hot water equipment of the present invention is shown. The gas water heater 1 is installed outdoors, and ...
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Disclosed is gas water heating equipment with reverse air resisting capability. The gas water heating equipment comprises a shell, a burner used for burning an air and gas mixture to generate heat, a heat exchanger used for absorbing the heat generated by the burner and transmitting the heat to passing water flow, a fan used for supplying air to the burner and discharging smoke generated by burning, a chimney cap and an air pressure switch. The air pressure switch is provided with a negative-pressure detection port and a positive-pressure detection port, the negative-pressure detection port is communicated with the fan through a first pipeline, and the positive-pressure detection port is communicated with the atmosphere through a second pipeline. Impact caused by external air pressure at the negative-pressure detection port can be counteracted by an air pressure value detected by the air pressure switch at the positive-pressure detection port, so that data detected by the air pressure switch can truly reflect a pressure value generated in the negative pressure zone of the fan, and further maloperation can be avoided.
Description
technical field [0001] The invention belongs to the field of combustion equipment, and in particular relates to wind pressure detection of gas hot water equipment. Background technique [0002] Gas hot water equipment usually includes gas water heaters and gas boilers. Taking a gas water heater as an example, a burner, a heat exchanger, and a pipeline system are usually arranged in it. The burner often includes several fire baffles arranged side by side, and each fire baffle has a gas-air mixing channel in which the gas and air can be mixed and delivered to the fire hole at the top of the fire baffle to burn in the combustion chamber and generate Heat, the generated heat can heat the water in the heat exchanger, and then the heated water can be exported through the pipeline system for the supply of domestic hot water for drinking and bathing. In addition to being used to provide domestic hot water, the gas boiler can also be connected to a radiator installed indoors to pro...
Claims
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IPC IPC(8): F24H1/00F24H9/20
CPCF24H1/145F23N5/247F24H9/02F24H9/205F24H15/242
Inventor 王超舒民勇王阳
Owner VAILLANT WUXI HEATING EQUIP