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Control method for adaptive flue pressure change of gas water heater and wall-hung boiler

A technology of a gas water heater and a control method, which is applied to the control of the adaptive flue pressure change of the gas water heater and the wall-hung boiler, and the control field of the adaptive flue pressure change of the wall-hung boiler, can solve the problem of flame overflow, low combustion efficiency, midway flameout, etc. problems, to achieve the effect of increasing fan speed, improving combustion efficiency, and saving gas costs

Active Publication Date: 2020-12-22
成都前锋电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing gas-fired water heaters or wall-hung boilers have a fixed air-to-air ratio during normal operation. Because the external wind pressure is high or the flue is blocked, the fan speed is not compensated. Problems such as low combustion efficiency, flameout in the middle, and flame spillage caused by blockage will cause users to be unable to use water heaters or wall-hung boilers during certain periods of time, reducing the adaptability of gas water heaters or wall-hung boilers

Method used

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  • Control method for adaptive flue pressure change of gas water heater and wall-hung boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this example, if figure 1 As shown, the control method for gas water heaters and wall-hung boilers to adapt to changes in flue pressure includes the following steps:

[0024] S1. Start the gas water heater or wall-hung boiler to work normally;

[0025] S2. Judging the relationship between the actual speed of the fan of the gas water heater or the wall-hung boiler and the theoretical speed, the theoretical speed of the fan is the speed of the fan when the pressure outside the flue of the gas water heater or the wall-hung boiler is equal to the internal pressure of the flue , the actual speed of the fan is the fan speed when the pressure outside the flue of the gas water heater or wall-hung boiler is not equal to the internal pressure of the flue;

[0026] S3. According to the judgment result of step S2, adjust the fan speed and air-air ratio of the gas water heater or wall-hung boiler to make the gas water heater or wall-hung boiler operate normally.

[0027] The th...

Embodiment 2

[0035] In this example, if figure 1 As shown, the control method for gas water heaters and wall-hung boilers to adapt to changes in flue pressure includes the following steps:

[0036] S1. Start the gas water heater or wall-hung boiler to work normally;

[0037] S2. Judging the relationship between the actual speed of the fan of the gas water heater or the wall-hung boiler and the theoretical speed, the theoretical speed of the fan is the speed of the fan when the pressure outside the flue of the gas water heater or the wall-hung boiler is equal to the internal pressure of the flue , the actual speed of the fan is the fan speed when the pressure outside the flue of the gas water heater or wall-hung boiler is not equal to the internal pressure of the flue;

[0038] S3. According to the judgment result of step S2, adjust the fan speed and air-air ratio of the gas water heater or wall-hung boiler to make the gas water heater or wall-hung boiler operate normally.

[0039] The th...

Embodiment 3

[0047] In this example, if figure 1 As shown, the control method for gas water heaters and wall-hung boilers to adapt to changes in flue pressure includes the following steps:

[0048] S1. Start the gas water heater or wall-hung boiler to work normally;

[0049] S2. Judging the relationship between the actual speed of the fan of the gas water heater or the wall-hung boiler and the theoretical speed, the theoretical speed of the fan is the speed of the fan when the pressure outside the flue of the gas water heater or the wall-hung boiler is equal to the internal pressure of the flue , the actual speed of the fan is the fan speed when the pressure outside the flue of the gas water heater or wall-hung boiler is not equal to the internal pressure of the flue;

[0050] S3. According to the judgment result of step S2, adjust the fan speed and air-air ratio of the gas water heater or wall-hung boiler to make the gas water heater or wall-hung boiler operate normally.

[0051] Theoreti...

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PUM

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Abstract

The invention discloses a control method of the self-adaptive flue pressure change of a gas water heater and a wall-hanging furnace. The control method of the self-adaptive flue pressure change of thegas water heater and the wall-hanging furnace comprises the following steps that S1, the gas water heater or the wall-hanging furnace is started for normal operation; S2, the size relationship between the actual rotation speed and the theoretical rotating speed of a fan of the gas water heater or the wall hanging furnace is judged, the theoretical rotating speed of the fan is the fan speed when the outside pressure of a flue of the gas water heater or the wall-hanging furnace is equal to the internal pressure of the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the outside pressure of the flue of the gas water heater or the wall-hanging furnace is not equal to the internal pressure of the flue; and S3, according to a judgment result of the S2, the fan rotating speed and the air ratio of the gas water heater or the wall-hanging furnace are adjusted to ensure the normal operation of the gas water heater or the wall-hanging furnace; the problems that the flue is blocked or the outside wind pressure is large in the process of using the gas water heater or the wall-hanging furnace are solved, the rotating speed of the fan is rapidly compensated byre-building a new air ratio parameter, and the normal operation of a machine is realized.

Description

technical field [0001] The invention relates to the technical field of water heaters and wall-hung boilers, in particular to a control method for gas-fired water heaters and wall-hung boilers that adapt to changes in flue pressure and a method for controlling the wall-hung boilers to adapt to changes in flue pressure. Background technique [0002] Gas water heaters or wall-hung boilers have become necessary heating equipment for families and have been widely used. With more and more high-rise residential buildings, gas water heaters or wall-hung boilers are generally installed on living balconies, and gas water heaters or wall-hung boilers are increasingly affected by floor wind pressure during use. [0003] Existing gas-fired water heaters or wall-hung boilers have a fixed air-to-air ratio during normal operation. Because the external wind pressure is high or the flue is blocked, the fan speed is not compensated. Problems such as low combustion efficiency, flame failure, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 王波李治林
Owner 成都前锋电子有限责任公司