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High-power fuel gas heating water heater control system and control method

A gas heating and control system technology, applied in heating systems, heating methods, household heating, etc., can solve the problems of rising production costs of gas heating water heaters, short service life of frequency conversion fans, and lack of industrial promotion. Achieve the effects of improving the level of flue gas emission, reducing the risk of condensation and corrosion of machines, and increasing the applicable range of combustion power load

Pending Publication Date: 2018-10-09
MACRO THERMAL ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of frequency conversion fans has led to a substantial increase in the initial production costs of gas heating water heaters. In addition, due to the large fluctuation range of the gas heating water heater workload, it has two functions of heating and domestic hot water, which also leads to the frequency conversion fan. The service life is not long
Therefore, this design has not been promoted by the industry

Method used

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  • High-power fuel gas heating water heater control system and control method

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Embodiment Construction

[0024] In the description of the present invention, it should be noted that for orientation words, such as the term "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower" , "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise " and other indication orientations and positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or in a specific orientation. The structure and operation should not be construed as limiting the specific protection scope of the present invention.

[0025] In addition, terms such as "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying rela...

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Abstract

The invention discloses a high-power fuel gas heating water heater control system which comprises a main controller, and a fuel gas proportion valve and a fan connected with the main controller. The high-power fuel gas heating water heater control system is characterized in that the fan is the double-speed fan with a high grade and a low grade; and the main controller controls the double-speed fanto work on the high grade or the low grade according to the opening degree of the fuel gas proportion valve. According to the high-power fuel gas heating water heater control system provided by the invention, the air speed of the fan with the high grade and the low grade is used for adapting to the combustion loads of a fuel gas heating water heater, so that when the fuel gas heating water heaterruns at a small-power load section, the fuel gas heating water heater can have higher combustion heat exchange efficiency, the comprehensive running heat exchange efficiency of the fuel gas heating water heater is improved, the effects on energy conservation and emission reduction are achieved, and meanwhile, the long-time use safety stability of the fuel gas heating water heater is improved. Meanwhile, the high-power fuel gas heating water heater control system is low in failure rate, reliable to run, and highly valuable in industrial application. The invention further provides a high-powerfuel gas heating water heater control method.

Description

technical field [0001] The invention relates to the technical field of fluid heaters, in particular to a control system and a control method for a high-power gas heating water heater. Background technique [0002] For conventional gas-fired heating water heaters with a relatively large maximum power load, the ratio of the minimum load to the maximum load can be 0.16, that is, for a gas-fired heating water heater with a rated load of 42kW, the minimum load can reach 7kW. The same fan speed and air volume as the large load will greatly reduce the combustion heat transfer efficiency of the gas, and the calorific value of the gas cannot be fully utilized. [0003] In the prior art, the AC fan equipped with a conventional gas-fired heating water heater has only one constant speed, and the speed of the fan is constant at one speed no matter whether it is a heavy load state or a small load state. However, during the use of gas heating water heaters, they are not necessarily burned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D19/10
CPCF24D19/1006Y02B10/70
Inventor 张贵元汪为彪李涛艾穗江
Owner MACRO THERMAL ENERGY TECH
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