CN109612115B - Gas water heater and wall-mounted boiler self-adaptive flue pressure change control method - Google Patents
Gas water heater and wall-mounted boiler self-adaptive flue pressure change control method Download PDFInfo
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- CN109612115B CN109612115B CN201811542024.4A CN201811542024A CN109612115B CN 109612115 B CN109612115 B CN 109612115B CN 201811542024 A CN201811542024 A CN 201811542024A CN 109612115 B CN109612115 B CN 109612115B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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Abstract
The invention discloses a control method for self-adaptive flue pressure change of a gas water heater and a wall-mounted boiler, which comprises the following steps: s1, starting a gas water heater or a wall-mounted furnace to normally work; s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue; s3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2 to enable the gas water heater or the wall-mounted furnace to normally operate; the problem of use gas heater or hanging stove in-process because of flue jam or external wind pressure are big, quick reconstruction new wind gas ratio parameter is to fan rotational speed compensation, realize the machine and normally work is solved.
Description
Technical Field
The invention relates to the technical field of water heaters and wall-mounted furnaces, in particular to a control method for self-adaptive flue pressure change of a gas water heater and a wall-mounted furnace and a control method for self-adaptive flue pressure change of the wall-mounted furnace.
Background
The gas water heater or the wall-mounted boiler becomes heating equipment necessary for families, and is widely applied. With more and more high-rise residences, the household gas water heater or wall-mounted boiler is generally installed on a living balcony, and the gas water heater or wall-mounted boiler is more and more greatly influenced by the wind pressure of floors in the using process.
The air-air ratio of the existing gas water heater or wall-mounted boiler is fixed in the normal working process, and the rotating speed of a fan is not compensated when the external air pressure is large or the flue is blocked, so that the problems of low combustion efficiency, flameout in midway, flame overflow and the like caused by the fact that the external air pressure is too large, the air flows backwards or the flue is blocked cause that a user cannot use the water heater or wall-mounted boiler in certain time intervals, and the adaptability of the gas water heater or wall-mounted boiler is reduced.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide a method for controlling a gas water heater and a wall-hanging stove to adapt to changes in flue pressure, so as to solve the problem that a new air-air ratio parameter is quickly reconstructed to compensate the rotation speed of a fan due to flue blockage or large external air pressure in the process of using the gas water heater or the wall-hanging stove, and realize normal operation of the machine.
In order to achieve the above purpose, the invention adopts the technical scheme that:
the control method for the self-adaptive flue pressure change of the gas water heater and the wall-mounted boiler comprises the following steps:
s1, starting a gas water heater or a wall-mounted furnace to normally work;
s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue;
and S3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2, so that the gas water heater or the wall-mounted furnace can normally operate.
When the gas water heater or the wall-mounted furnace is in normal combustion, if the external pressure of the flue is greater than the internal pressure of the flue or the flue is blocked, the main controller monitors the actual rotating speed of the fan in real time and correspondingly increases the wind speed gradient and automatically calculates new wind-gas distribution by the main controller within a preset rotating speed range, so that the normal work of the machine is realized. The internal and external pressure of the flue can be detected by a pressure sensor, and the signal analysis, judgment and instruction transmission are completed by a main controller.
Further, the specific determination and adjustment method of step S3 is as follows: because of flue external pressure is greater than internal pressure or flue blockage probably combustion efficiency on the low side, flame-out midway and flame overflow scheduling problem, consequently in order to realize the machine normal work, avoid above risk, do the following adaptability adjustment to fan rotational speed and wind gas ratio:
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2850r/min and 3000r/min, adjusting the fan rotating speed to be more than 3500r/min, and readjusting the air-air ratio to increase the air-air ratio by 20% of the theoretical value;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2550r/min and 2850r/min, adjusting the fan rotating speed to be more than 3400r/min, and readjusting the air-air ratio to increase the air-air ratio by 15% of the theoretical value;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2350r/min and 2550r/min, adjusting the fan rotating speed to be more than 3250r/min, and readjusting the air-air ratio to increase the air-air ratio by 10% of the theoretical value;
and if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is between 2200r/min and 2350r/min, adjusting the fan rotating speed to be more than 3000r/min, and readjusting the air-air ratio to increase the air-air ratio by 5% of the theoretical value.
Further, when the wind power in the outdoor world is too large and is not suitable for using the gas water heater or the wall-mounted furnace temporarily, namely the actual fan rotating speed is greater than the theoretical fan rotating speed and meets the requirement that the actual fan rotating speed is greater than 3100r/min, a user is prompted to be incapable of using the gas water heater or the wall-mounted furnace, and a fault code is displayed.
Further, if the actual fan rotating speed is smaller than the theoretical fan rotating speed, the gas water heater or the wall-mounted furnace normally works to indicate that the flue is not blocked.
The invention has the beneficial effects that:
compared with the prior art, the method can be used for solving the problems of low combustion efficiency, flameout midway, flame overflow and the like caused by overlarge external wind pressure, backward flow wind or blockage of a flue when the gas water heater or the wall-mounted furnace is used, quickly reconstructing new wind-gas proportioning parameters to compensate the rotating speed of the fan, improving the rotating speed of the fan, realizing normal work of a machine, avoiding the problems of low combustion efficiency, flameout midway and flame overflow of the gas water heater or the wall-mounted furnace caused by external wind pressure change when a high-rise user uses the gas water heater or the wall-mounted furnace, protecting the gas water heater or the wall-mounted furnace, improving the combustion efficiency of the gas water heater or the wall-mounted furnace, saving energy and saving gas cost for the user.
Drawings
FIG. 1 is a flow chart of a control method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings.
Example 1:
in this embodiment, as shown in fig. 1, the method for controlling a gas water heater and a wall-hanging stove to adapt to flue pressure changes includes the following steps:
s1, starting a gas water heater or a wall-mounted furnace to normally work;
s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue;
and S3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2, so that the gas water heater or the wall-mounted furnace can normally operate.
The theoretical fan rotating speed is 2100 r/min; the actual fan rotating speed is r real, and the theoretical fan rotating speed is r rational;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2850r/min, adjusting the fan rotating speed to be more than 3500r/min, and readjusting the air-air ratio to increase the air-air ratio by 20% of the theoretical value, namely the air-air ratio is 1;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is 2550r/min, adjusting the fan rotating speed to be more than 3400r/min, and readjusting the air-air ratio to increase the air-air ratio by 15% of the theoretical value, namely the air-air ratio 2;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2350r/min, adjusting the fan rotating speed to be more than 3250r/min, and readjusting the air-air ratio to increase the air-air ratio by 10% of the theoretical value, namely the air-air ratio 3;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2200r/min, adjusting the fan rotating speed to be more than 3000r/min, and readjusting the air-air ratio to increase the air-air ratio by 5% of the theoretical value, namely the air-air ratio 4;
and if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is greater than 3100r/min, prompting that the gas water heater or the wall-mounted furnace cannot be used.
And if the actual fan rotating speed is less than the theoretical fan rotating speed, the gas water heater or the wall-mounted furnace normally works.
Example 2:
in this embodiment, as shown in fig. 1, the method for controlling a gas water heater and a wall-hanging stove to adapt to flue pressure changes includes the following steps:
s1, starting a gas water heater or a wall-mounted furnace to normally work;
s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue;
and S3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2, so that the gas water heater or the wall-mounted furnace can normally operate.
The theoretical fan rotating speed is 2100 r/min; the actual fan rotating speed is r real, and the theoretical fan rotating speed is r rational;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 3000r/min, adjusting the fan rotating speed to be more than 3500r/min, and readjusting the air-air ratio to increase the air-air ratio by 20% of the theoretical value, namely the air-air ratio is 1;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2850r/min, adjusting the fan rotating speed to be more than 3400r/min, and readjusting the air-air ratio to increase the air-air ratio by 15% of the theoretical value, namely the air-air ratio 2;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2550r/min, adjusting the fan rotating speed to be more than 3250r/min, and readjusting the air-air ratio to increase the air-air ratio by 10% of the theoretical value, namely the air-air ratio 3;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2350r/min, adjusting the fan rotating speed to be more than 3000r/min, and readjusting the air-air ratio to increase the air-air ratio by 5% of the theoretical value, namely the air-air ratio is 4;
and if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is greater than 3100r/min, prompting that the gas water heater or the wall-mounted furnace cannot be used.
And if the actual fan rotating speed is less than the theoretical fan rotating speed, the gas water heater or the wall-mounted furnace normally works.
Example 3
In this embodiment, as shown in fig. 1, the method for controlling a gas water heater and a wall-hanging stove to adapt to flue pressure changes includes the following steps:
s1, starting a gas water heater or a wall-mounted furnace to normally work;
s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue;
and S3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2, so that the gas water heater or the wall-mounted furnace can normally operate.
The theoretical fan rotating speed is 2100 r/min; the actual fan rotating speed is r real, and the theoretical fan rotating speed is r rational;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2900r/min, adjusting the fan rotating speed to be more than 3500r/min, and readjusting the air-air ratio to increase the air-air ratio by 20% of the theoretical value, namely the air-air ratio is 1;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2700r/min, adjusting the fan rotating speed to be more than 3400r/min, and readjusting the air-air ratio to increase the air-air ratio by 15% of the theoretical value, namely the air-air ratio 2;
if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is 2450r/min, adjusting the fan rotating speed to be more than 3250r/min, and readjusting the air-air ratio to increase the air-air ratio by 10% of a theoretical value, namely the air-air ratio is 3;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is 2250r/min, adjusting the fan rotating speed to be more than 3000r/min, and readjusting the air-air ratio to increase the air-air ratio by 5% of the theoretical value, which is the air-air ratio 4;
and if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is greater than 3100r/min, prompting that the gas water heater or the wall-mounted furnace cannot be used.
And if the actual fan rotating speed is less than the theoretical fan rotating speed 2100r/min, the gas water heater or the wall-mounted furnace normally works.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A control method for self-adaptive flue pressure change of a gas water heater and a wall-mounted boiler is characterized by comprising the following steps:
s1, starting a gas water heater or a wall-mounted furnace to normally work;
s2, judging the size relation between the actual rotating speed and the theoretical rotating speed of a fan of the gas water heater or the wall-mounted furnace, wherein the theoretical rotating speed of the fan is the rotating speed of the fan when the pressure outside a flue of the gas water heater or the wall-mounted furnace is equal to the pressure inside the flue, and the actual rotating speed of the fan is the rotating speed of the fan when the pressure outside the flue of the gas water heater or the wall-mounted furnace is not equal to the pressure inside the flue;
s3, adjusting the fan rotating speed and the air-air ratio of the gas water heater or the wall-mounted furnace according to the judgment result of the step S2 to enable the gas water heater or the wall-mounted furnace to normally operate;
the specific judgment and adjustment method of step S3 is as follows:
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2850r/min and 3000r/min, adjusting the fan rotating speed to be more than 3500r/min, and readjusting the air-air ratio to increase the air-air ratio by 20% of the theoretical value;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2550r/min and 2850r/min, adjusting the fan rotating speed to be more than 3400r/min, and readjusting the air-air ratio to increase the air-air ratio by 15% of the theoretical value;
if the actual fan rotating speed is larger than the theoretical fan rotating speed and the actual fan rotating speed is between 2350r/min and 2550r/min, adjusting the fan rotating speed to be more than 3250r/min, and readjusting the air-air ratio to increase the air-air ratio by 10% of the theoretical value;
and if the actual fan rotating speed is greater than the theoretical fan rotating speed and the actual fan rotating speed is between 2200r/min and 2350r/min, adjusting the fan rotating speed to be more than 3000r/min, and readjusting the air-air ratio to increase the air-air ratio by 5% of the theoretical value.
2. The control method according to claim 1, wherein if the actual fan speed is greater than the theoretical fan speed and the actual fan speed is greater than 3100r/min, it is indicated that the gas water heater or the wall-hanging stove cannot be used.
3. The control method according to claim 2, wherein the gas water heater or the wall-hanging furnace is normally operated if the actual fan rotation speed is less than the theoretical fan rotation speed.
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| CN201811542024.4A CN109612115B (en) | 2018-12-17 | 2018-12-17 | Gas water heater and wall-mounted boiler self-adaptive flue pressure change control method |
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| CN201811542024.4A CN109612115B (en) | 2018-12-17 | 2018-12-17 | Gas water heater and wall-mounted boiler self-adaptive flue pressure change control method |
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| CN109612115B true CN109612115B (en) | 2020-12-22 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110953731A (en) * | 2019-12-30 | 2020-04-03 | 重庆海尔热水器有限公司 | Wind pressure control method and device, gas water heater and storage medium |
| CN111426070B (en) * | 2020-05-21 | 2021-04-23 | 珠海格力电器股份有限公司 | Wall-mounted furnace smoke tube detection method and device and wall-mounted furnace |
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| CN105757994A (en) * | 2016-01-18 | 2016-07-13 | 广东万家乐燃气具有限公司 | Gas water heater self-adaption wind pressure resisting control method and system |
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| CN102080878A (en) * | 2009-11-27 | 2011-06-01 | 海尔集团公司 | Draught fan control method and device of gas equipment |
| CN103090548A (en) * | 2013-02-01 | 2013-05-08 | 广东万和新电气股份有限公司 | Protection device of gas water heater flue blockage and detecting method thereof |
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