CN111089425A - Wind pressure resistance control method for fan of gas water heater based on alternating current fan - Google Patents
Wind pressure resistance control method for fan of gas water heater based on alternating current fan Download PDFInfo
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- CN111089425A CN111089425A CN201811239747.7A CN201811239747A CN111089425A CN 111089425 A CN111089425 A CN 111089425A CN 201811239747 A CN201811239747 A CN 201811239747A CN 111089425 A CN111089425 A CN 111089425A
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- alternating current
- water heater
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/005—Regulating air supply or draught using electrical or electromechanical means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention relates to a wind pressure resistance control method of a gas water heater fan based on an alternating current fan, which is characterized in that a theoretical rotating speed value V1 of the fan in a no-wind-pressure state corresponding to a current alternating current fan conduction angle is compared with a detected actual wind inlet speed V2, and C is V2-V1; and if C exceeds a set threshold value D, judging that the external wind pressure is too large, and controlling to increase the conduction angle of the alternating current fan. The wind pressure resistance control method of the gas water heater fan based on the alternating current fan can effectively detect the condition of increasing the external wind pressure, under the condition of overlarge external wind pressure, the power of the alternating current fan is increased by improving the conduction angle of the alternating current fan, the rotating speed of the alternating current fan is improved, the influence of the external wind pressure on the combustion of the water heater is further resisted, the condition that flame is extinguished is effectively avoided, the normal combustion of the gas water heater is guaranteed, and the adaptability of the gas water heater is enhanced.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a wind pressure resistance control method for a fan of a gas water heater based on an alternating current fan.
Background
The domestic gas water heater has complicated use conditions and working environment, and the constant temperature performance of the water heater can be influenced by the purity of combustible gas, the size of air pressure, the fluctuation of water flow, the size of external air pressure and other factors. The gas heater based on the alternating current fan is low in rotating speed and low in power, whether the adaptability to wind is poor to the outside in the using process, and when wind pressure appears at the outlet of the smoke exhaust pipe, the machine is flamed out or not ignited due to resistance generated by the machine, so that the gas heater cannot be normally used. And with the increase of high-rise users, the situation of the wind pressure is more and more obvious when the floor is higher, and the problem caused by the fact that machines cannot burn due to overlarge wind pressure is increasingly prominent.
The invention discloses a fan PG motor control method, a fan and an air conditioner, and relates to the field of air conditioners, in particular to a fan PG motor control method, a fan and an air conditioner, which are applied to Chinese invention patent application with publication number CN106440208A (application number 201610861760.0). The method comprises the steps of obtaining the actual rotating speed of the PG motor within a first preset time length; matching the obtained actual rotating speed with a preset target rotating speed, and reducing the conduction angle of the PG motor when the actual rotating speed is greater than the preset target rotating speed; when the actual rotating speed is less than the preset target rotating speed, increasing the conduction angle of the PG motor; and when the actual rotating speed is equal to the preset target rotating speed, keeping the conduction angle of the PG motor unchanged. The invention is used for controlling the air conditioner fan. The scheme discloses that the rotating speed of the fan can be effectively adjusted by controlling the conduction angle of the PG motor, but the scheme cannot provide the content of how to solve the problem of adjusting the fan under the condition of excessive wind pressure.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a wind pressure resistance control method of a gas water heater fan based on an alternating current fan, which can still ensure effective ignition and combustion under the condition of overlarge wind pressure and avoid flameout.
The technical scheme adopted by the invention for solving the problems is as follows: a wind pressure resistance control method for a fan of a gas water heater based on an alternating current fan is characterized by comprising the following steps:
s1, comparing and calculating a theoretical rotating speed value V1 of the fan in a no-wind-pressure state corresponding to the current alternating-current fan conduction angle with the detected actual air inlet speed V2, wherein C is V2-V1;
and S2, if C exceeds the set threshold value D, judging that the external wind pressure is too large, and controlling to increase the conduction angle of the alternating current fan.
Calculating the corresponding alternating current fan rotating speed V0 according to the required heating energy of the gas water heater, judging whether the V0 is positioned in the linear adjusting range of the fan rotating speed of the alternating current fan corresponding to the conduction angle, if so, carrying out S1, and if not, controlling the fan to work according to the conduction angle corresponding to the alternating current fan rotating speed V0.
D is 200 revolutions per min; and controlling the compensation quantity A of the conduction angle of the AC fan to be increased to 5 (V2-V1)/100.
Compared with the prior art, the invention has the advantages that: the wind pressure resistance control method of the gas water heater fan based on the alternating current fan can effectively detect the condition of increasing the external wind pressure, under the condition of overlarge external wind pressure, the power of the alternating current fan is increased by improving the conduction angle of the alternating current fan, the rotating speed of the alternating current fan is improved, the influence of the external wind pressure on the combustion of the water heater is further resisted, the condition that flame is extinguished is effectively avoided, the normal combustion of the gas water heater is guaranteed, and the adaptability of the gas water heater is enhanced.
Drawings
Fig. 1 is a flow chart of a wind pressure resistance control method of a fan of a gas water heater based on an alternating current fan in an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The alternating current fan controls the rotating speed of the alternating current fan by controlling the conduction angle of the alternating current fan, and the larger the conduction angle is, the larger the corresponding rotating speed of the alternating current fan is.
According to experimental tests, a relation curve between the conduction angle and the rotating speed of the alternating current fan is parabolic, and the rotating speed and the conduction angle of the alternating current fan are in a linear relation within the range of 1300 plus 2000 rpm of the rotating speed of the fan, namely the rotating speed of the alternating current fan can be linearly adjusted by adjusting the conduction angle.
As shown in fig. 1, the wind pressure resistance control method for the blower of the gas water heater based on the ac blower in this embodiment includes the following steps:
after the water heater starts burning, firstly, calculating the corresponding rotating speed V0 of the alternating current fan according to the required heating energy of the gas water heater, and judging whether the V0 is positioned in the linear adjusting range of the rotating speed of the alternating current fan corresponding to the conduction angle, namely judging whether the V0 is positioned in the range of 1300 plus 2000 rpm, if not, normally working according to the control fan according to the conduction angle corresponding to the rotating speed V0 of the alternating current fan; if so, go to S1;
s1, comparing and calculating a theoretical rotating speed value V1 of the fan in a no-wind-pressure state corresponding to the current alternating current fan conduction angle B with the detected actual air inlet speed V2, wherein C is V2-V1;
s2, if C exceeds the set threshold D, D is 200 rpm in this embodiment; and judging that the external wind pressure is too large, and controlling to increase the conduction angle of the alternating-current fan so that the conduction angle reaches M, wherein the compensation amount A for increasing the conduction angle of the alternating-current fan is 5 (V2-V1)/100, and M is B + A.
The wind pressure resistance control method of the gas water heater fan based on the alternating current fan can effectively detect the condition of increasing the external wind pressure, under the condition of overlarge external wind pressure, the power of the alternating current fan is increased by improving the conduction angle of the alternating current fan, the rotating speed of the alternating current fan is improved, the influence of the external wind pressure on the combustion of the water heater is further resisted, the condition that flame is extinguished is effectively avoided, the normal combustion of the gas water heater is guaranteed, and the adaptability of the gas water heater is enhanced.
Claims (3)
1. A wind pressure resistance control method for a fan of a gas water heater based on an alternating current fan is characterized by comprising the following steps:
s1, comparing and calculating a theoretical rotating speed value V1 of the fan in a no-wind-pressure state corresponding to the current alternating-current fan conduction angle with the detected actual air inlet speed V2, wherein C is V2-V1;
and S2, if C exceeds the set threshold value D, judging that the external wind pressure is too large, and controlling to increase the conduction angle of the alternating current fan.
2. The wind pressure resistance control method for the alternating current fan-based gas water heater fan, as claimed in claim 1, is characterized in that: calculating the corresponding alternating current fan rotating speed V0 according to the required heating energy of the gas water heater, judging whether the V0 is positioned in the linear adjusting range of the fan rotating speed of the alternating current fan corresponding to the conduction angle, if so, carrying out S1, and if not, controlling the fan to work according to the conduction angle corresponding to the alternating current fan rotating speed V0.
3. The wind pressure resistance control method for the alternating current fan-based gas water heater fan, as claimed in claim 1, is characterized in that: d is 200 revolutions per min; and controlling the compensation quantity A of the conduction angle of the AC fan to be increased to 5 (V2-V1)/100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239747.7A CN111089425A (en) | 2018-10-24 | 2018-10-24 | Wind pressure resistance control method for fan of gas water heater based on alternating current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811239747.7A CN111089425A (en) | 2018-10-24 | 2018-10-24 | Wind pressure resistance control method for fan of gas water heater based on alternating current fan |
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| Publication Number | Publication Date |
|---|---|
| CN111089425A true CN111089425A (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811239747.7A Pending CN111089425A (en) | 2018-10-24 | 2018-10-24 | Wind pressure resistance control method for fan of gas water heater based on alternating current fan |
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| CN (1) | CN111089425A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551426A (en) * | 2021-07-14 | 2021-10-26 | 广东万家乐燃气具有限公司 | Gas water heating equipment and high-wind-resistance control method thereof |
Citations (6)
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| US4075865A (en) * | 1975-12-05 | 1978-02-28 | Borg-Warner Corporation | Apparatus for controlling condenser pressure in a refrigeration system |
| JPH0979576A (en) * | 1995-09-12 | 1997-03-28 | Corona Corp | Combustion controller |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| CN203457096U (en) * | 2013-06-19 | 2014-02-26 | 苏州经贸职业技术学院 | Dust collector controller with harmonic wave suppression |
| CN106885378A (en) * | 2017-03-31 | 2017-06-23 | 广东万和新电气股份有限公司 | Gas heater wind resistance pressure control system |
| CN108626781A (en) * | 2018-06-05 | 2018-10-09 | 万家乐热能科技有限公司 | A kind of high power gas heating hot water furnace control system and control method |
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2018
- 2018-10-24 CN CN201811239747.7A patent/CN111089425A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| US4075865A (en) * | 1975-12-05 | 1978-02-28 | Borg-Warner Corporation | Apparatus for controlling condenser pressure in a refrigeration system |
| JPH0979576A (en) * | 1995-09-12 | 1997-03-28 | Corona Corp | Combustion controller |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| CN203457096U (en) * | 2013-06-19 | 2014-02-26 | 苏州经贸职业技术学院 | Dust collector controller with harmonic wave suppression |
| CN106885378A (en) * | 2017-03-31 | 2017-06-23 | 广东万和新电气股份有限公司 | Gas heater wind resistance pressure control system |
| CN108626781A (en) * | 2018-06-05 | 2018-10-09 | 万家乐热能科技有限公司 | A kind of high power gas heating hot water furnace control system and control method |
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| 李前卫: "数码恒温型强排热水器结构要素及控制方法", 《家用燃气具 》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551426A (en) * | 2021-07-14 | 2021-10-26 | 广东万家乐燃气具有限公司 | Gas water heating equipment and high-wind-resistance control method thereof |
| CN113551426B (en) * | 2021-07-14 | 2022-12-09 | 广东万家乐燃气具有限公司 | Gas water heating equipment and high-wind-resistance control method thereof |
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