CN112460814A - Control method for wind speed self-adaption of direct-current variable-frequency gas water heater - Google Patents
Control method for wind speed self-adaption of direct-current variable-frequency gas water heater Download PDFInfo
- Publication number
- CN112460814A CN112460814A CN202011249181.3A CN202011249181A CN112460814A CN 112460814 A CN112460814 A CN 112460814A CN 202011249181 A CN202011249181 A CN 202011249181A CN 112460814 A CN112460814 A CN 112460814A
- Authority
- CN
- China
- Prior art keywords
- rotating speed
- fan
- value
- gas
- interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a wind speed self-adaptive control method for a direct-current variable-frequency gas water heater. The invention has the beneficial effects that: the air duct resistance is calculated by matching different fan rotating speeds with different combustion working condition points and by collecting and calculating the current, the rotating speed and the like of the direct current fan without a wind pressure switching signal, the rotating speed of the fan is adjusted in a self-adaptive mode, the combustion wind resistance is improved, different loads are automatically matched with different fan rotating speeds, and the rotating speed of the fan is improved to reach the optimal working state by intelligently judging the blocking condition of the air duct.
Description
Technical Field
The invention relates to a wind speed control method of a gas water heater, in particular to a wind speed self-adaptive control method of a direct-current variable-frequency gas water heater, and belongs to the technical field of constant-temperature gas water heaters.
Background
Most of the existing gas water heaters are alternating-current updraft gas water heaters (fans cannot be adjusted in speed), when users use water, the gas water heaters detect water flow signals, the fans are started to clean the water, waste gas in the water heaters is discharged through smoke pipes, ignition is carried out after a wind pressure switch detects closing, gas valves are opened, combustion is carried out, and the water flows out through the water heaters after being heated.
Before ignition or in the combustion process, whether the wind pressure is closed or not is judged, and the closing represents that the wind channel is smooth and the wind pressure system is normal. Due to the fact that outside wind is large, or the smoke pipe is accidentally blocked, and wind pressure is not closed, flame overflow or insufficient combustion may occur. The water heater can give an alarm. However, because the wind pressure switch only has two signals of switching, alarm points are all unanimous under the different installation environment (flue pipe length) or when different operation load, can lead to some to report to the police untimely, when there is strong wind in the external world, the wind pressure signal is normal, nevertheless because it is obstructed to take the gas emission, leads to the oxygen suppliment not enough, and the burning can be unstable, does not allow the branch, produces the flue gas that a large amount of CO exceed the standard, and based on this, this application provides a direct current frequency conversion gas heater wind speed self-adaptation's control method.
Disclosure of Invention
The invention aims to provide a wind speed self-adaptive control method for a direct-current variable-frequency gas water heater, aiming at solving the problem.
The invention realizes the purpose through the following technical scheme: a wind speed self-adaptive control method for a direct-current variable-frequency gas water heater comprises the following steps of using the gas water heater for work control; the gas water heater comprises a shell, a heat exchanger, a combustion chamber, a gas interface, a water inlet interface, a water outlet interface, a smoke exhaust pipe and a direct current fan, wherein the heat exchanger and the combustion chamber are arranged in the shell, the heat exchanger is positioned above the combustion chamber, the bottom end of the shell is provided with the gas interface, the water inlet interface and the water outlet interface, the gas interface, the water inlet interface and the water outlet interface are sequentially arranged from right to left, one end of the gas interface is communicated with the combustion chamber through a pipeline, the other end of the gas interface is communicated with an external gas pipe, one end of the water inlet interface is communicated with the water inlet end of the heat exchanger through a pipeline, the other end of the water inlet interface is communicated with an external water inlet pipe through a pipeline, one end of the water outlet interface is communicated with the water outlet end of the heat exchanger through a pipeline, the top of the shell is provided with a smoke exhaust pipe, the smoke exhaust pipe is connected to a smoke outlet of the combustion chamber, and a direct current fan is arranged in the smoke exhaust pipe;
the control method comprises the following procedures:
the standard smoke tube is not blocked, and when the outside is windless and the normal combustion is performed, the direct current fan is intelligently matched;
secondly, when the smoke pipe is blocked or the outside is windy:
the fan characteristic: at the same load point, when wind or blockage exists outside, the work of the fan is reduced, the rotating speed can be automatically increased, the current value is reduced, and the ratio of I/R is I/R, wherein I is the current of the fan, R is the rotating speed, and at the moment, the power output of the fan is increased to increase the rotating speed;
calculation of virtual pressure values: when the I/R is larger than a certain value, the smoke discharge is smooth, and when the I/R is smaller than a certain value, the smoke discharge is not smooth, and the value can be defined as the pressure value of the smoke discharge duct. The pressure value under the standard smoke tube is factory-set to be a standard value;
intelligently compensating the wind speed during blockage:
(1) calculating the required rotating speed according to the user demand load;
(2) and comparing with a factory standard value. If the smoke discharge rate is larger than the standard value, the smoke discharge rate is smoother, the rotating speed can be kept to operate continuously, and if the smoke discharge rate is smaller than the standard value, the smoke discharge rate is not smooth;
(3) the more serious the blockage is, the larger the rotation speed is increased, the combustion noise is increased, meanwhile, the combustion is unstable, the advanced alarm processing is needed, and the larger the load is, the larger the maximum rotation speed alarm point is;
(4) if the large subsection area has the same load point, the large subsection area is switched to, the rotating speed calculation and adjustment are carried out again, when the continuous 5s of adjusting rotating speed still occurs after the switching and reaches the maximum rotating speed of the corresponding load, the alarm processing is carried out, the gas valve is closed, the combustion is stopped, and the direct current fan stops working after rotating for 10 s.
As a still further scheme of the invention: the calculation mode of the virtual pressure value is as follows: and when the rotating speed reaches the target rotating speed, calculating the virtual pressure value P as I/R.
As a still further scheme of the invention: when the range of the virtual pressure value smaller than the standard value is 0-10%, the influence on the whole machine is small, and the adjustment can be omitted.
As a still further scheme of the invention: and when the range of the virtual pressure value smaller than the standard value is larger than 10%, starting to adjust the rotating speed, adjusting for 50r/min every 500ms, calculating the P value in real time after adjustment, and stopping adjustment when the P value is larger than 95% of the standard P value.
As a still further scheme of the invention: when the rotating speed of the direct current fan is continuously adjusted for 5 seconds to reach the maximum rotating speed of the corresponding load, the combustion oxygen supply is seriously insufficient, if the same load point does not exist in a large subsection area, the alarm processing is carried out, a gas valve is closed, the combustion is stopped, and the direct current fan stops working after rotating for 10 seconds.
The invention has the beneficial effects that: the wind speed self-adaptive control method of the direct-current variable-frequency gas water heater is reasonable in design, a wind pressure switch signal is not needed, the wind channel resistance is calculated by matching different fan rotating speeds with different combustion working condition points and by collecting and calculating the current, the rotating speed and the like of a direct-current fan, the rotating speed of the fan is adjusted in a self-adaptive mode, the combustion wind resistance is improved, different loads are automatically matched with different fan rotating speeds, and the rotating speed of the fan is improved to reach the optimal working state by intelligently judging the wind channel blocking condition.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a schematic diagram showing the relationship between current and rotation speed according to the present invention.
In the figure: 1. the device comprises a shell, 2, a heat exchanger, 3, a combustion chamber, 4, a gas interface, 5, a water inlet interface, 6, a water outlet interface, 7, a smoke exhaust pipe and 8 and a direct current fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a method for controlling wind speed self-adaptation of a direct-current variable-frequency gas water heater includes a gas water heater for work control; the gas water heater comprises a shell 1, a heat exchanger 2, a combustion chamber 3, a gas interface 4, a water inlet interface 5, a water outlet interface 6, a smoke exhaust pipe 7 and a direct current fan 8, wherein the shell 1 is internally provided with the heat exchanger 2 and the combustion chamber 3, the heat exchanger 2 is positioned above the combustion chamber 3, the bottom end of the shell 1 is provided with the gas interface 4, the water inlet interface 5 and the water outlet interface 6, the gas interface 4, the water inlet interface 5 and the water outlet interface 6 are sequentially arranged from right to left, one end of the gas interface 4 is communicated with the combustion chamber 3 through a pipeline, the other end of the gas interface 4 is communicated with an external gas pipe, one end of the water inlet interface 5 is communicated with the water inlet end of the heat exchanger 2 through a pipeline, the other end of the water inlet interface 5 is communicated with an external water inlet pipe, one end of the water outlet interface 6 is communicated with the water outlet end of, the other end of the water outlet connector 6 is communicated with a peripheral water outlet pipe, a smoke exhaust pipe 7 is arranged at the top of the shell 1, the smoke exhaust pipe 7 is connected to a smoke outlet of the combustion chamber 3, and a direct current fan 8 is installed in the smoke exhaust pipe 7.
Example (b):
the wind speed self-adaptive control method of the direct-current variable-frequency gas water heater comprises the following procedures:
the standard smoke tube is not blocked, and when the outside is windless and the normal combustion is performed, the direct current fan is intelligently matched; after the user boils water, the required load P (kw) is calculated to be L (T is set to T water inlet)/14 is constant (when the user bathes water, the required load is generally constant, and the set temperature and the water flow rate are not changed), if the required load is 16.5kw, the working time can be calculated as 6 segments, the opening degree of the proportional valve is between PH and PL, and the output rotating speed of the air outlet machine is calculated to be 2000+ (16.5-10)/(23-10) (3000 + 2000) to 2500r/min according to the proportional relation. When the demand load changes, the rotating speed of the fan changes correspondingly;
secondly, when the smoke pipe is blocked or the outside is windy:
the fan characteristic: at the same load point, when wind or blockage exists outside, the work of the fan is reduced, the rotating speed can be automatically increased, the current value is reduced, the power output of the fan is increased when the I/R (I is the current of the fan, and R is the rotating speed) is increased, and the rotating speed is increased to enable the smoke discharge to be smoother. When the calculated value of I/R is increased to be equal to the normal non-blockage value, smoke is discharged, oxygen supply is improved, and the requirement can be met;
calculation of virtual pressure values: when the I/R is larger than a certain value, the smoke discharge is smooth, and when the I/R is smaller than a certain value, the smoke discharge is not smooth, and the value can be defined as the pressure value of the smoke discharge duct. The pressure value under the standard smoke tube is factory-set to be a standard value;
intelligently compensating the wind speed during blockage:
(1) calculating the required rotating speed according to the user demand load;
(2) and comparing with a factory standard value. If the smoke discharge rate is larger than the standard value, the smoke discharge rate is smoother, the rotating speed can be kept to operate continuously, and if the smoke discharge rate is smaller than the standard value, the smoke discharge rate is not smooth;
(3) the more serious the blockage is, the larger the rotation speed is increased, the combustion noise is increased, meanwhile, the combustion is unstable, the advanced alarm processing is needed, and the larger the load is, the larger the maximum rotation speed alarm point is;
(4) if the large subsection area has the same load point, the large subsection area is switched to, the rotating speed calculation and adjustment are carried out again, when the continuous 5s of adjusting rotating speed still occurs after the switching and reaches the maximum rotating speed of the corresponding load, the alarm processing is carried out, the gas valve is closed, the combustion is stopped, and the direct current fan stops working after 8-time rotation for 10 s.
In the embodiment of the present invention, the virtual pressure value is calculated in the following manner: and when the rotating speed reaches the target rotating speed, calculating the virtual pressure value P as I/R.
In the embodiment of the invention, when the range of the virtual pressure value smaller than the standard value is 0-10%, the influence on the whole machine is not great, and the adjustment can be omitted.
In the embodiment of the invention, when the range of the virtual pressure value smaller than the standard value is larger than 10%, the rotation speed is adjusted, the adjustment is performed for 50r/min every 500ms, the P value is calculated in real time after the adjustment, and when the P value is larger than 95% of the standard P value, the adjustment is stopped.
In the embodiment of the invention, when the rotating speed of the direct current fan 8 is continuously adjusted for 5s to reach the maximum rotating speed of the corresponding load, the combustion oxygen supply is seriously insufficient, if the large subsection area has no same load point, the alarm processing is carried out, the gas valve is closed, the combustion is stopped, and the direct current fan stops working after rotating for 10 s.
The working principle is as follows: when the control method for the wind speed self-adaption of the direct-current variable-frequency gas water heater is used, different fan rotating speeds are automatically matched with different combustion working condition points, the air channel resistance is calculated by collecting and calculating the current, the rotating speed and the like of the direct-current fan, the rotating speed of the fan is adjusted in an adaptive mode, and the combustion wind resistance is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A wind speed self-adaptive control method for a direct-current variable-frequency gas water heater is characterized by comprising the following steps of: comprises a gas water heater used for work control;
the gas water heater comprises a shell (1), a heat exchanger (2), a combustion chamber (3), a gas interface (4), a water inlet interface (5), a water outlet interface (6), a smoke exhaust pipe (7) and a direct current fan (8);
a heat exchanger (2) and a combustion chamber (3) are arranged in the shell (1), the heat exchanger (2) is positioned above the combustion chamber (3), a gas interface (4), a water inlet interface (5) and a water outlet interface (6) are arranged at the bottom end of the shell (1), and the gas interface (4), the water inlet interface (5) and the water outlet interface (6) are sequentially arranged from right to left; one end of the gas interface (4) is communicated with the combustion chamber (3) through a pipeline, the other end of the gas interface (4) is communicated with an external gas pipe, one end of the water inlet interface (5) is communicated with the water inlet end of the heat exchanger (2) through a pipeline, the other end of the water inlet interface (5) is communicated with an external water inlet pipe, one end of the water outlet interface (6) is communicated with the water outlet end of the heat exchanger (2) through a pipeline, the other end of the water outlet interface (6) is communicated with an external water outlet pipe, a smoke exhaust pipe (7) is arranged at the top of the shell (1), the smoke exhaust pipe (7) is connected to the smoke outlet of the combustion chamber (3), and a direct current fan (8) is installed in the smoke exhaust pipe (7);
the control method comprises the following procedures:
the standard smoke tube is not blocked, and when the outside is windless and the normal combustion is performed, the direct current fan is intelligently matched;
secondly, when the smoke pipe is blocked or the outside is windy:
the fan characteristic: at the same load point, when wind or blockage exists outside, the work of the fan is reduced, the rotating speed can be automatically increased, the current value is reduced, I/R is the fan current, R is the rotating speed, and at the moment, the power output of the fan is increased to increase the rotating speed;
calculation of virtual pressure values: when the I/R is larger than a certain value, the smoke discharge is smooth, when the I/R is smaller than a certain value, the smoke discharge is not smooth, the value can be defined as the pressure value of a smoke discharge duct, and the pressure value under a standard smoke pipe is factory-set to be a standard value;
thirdly, intelligently compensating the wind speed during blockage:
(a) calculating the required rotating speed according to the user demand load;
(b) comparing with a factory standard value, if the smoke discharge rate is larger than the standard value, the smoke discharge rate is smoother, the operation at the rotating speed can be continuously kept, and if the smoke discharge rate is smaller than the standard value, the smoke discharge is not smooth;
(c) the more serious the blockage is, the larger the rotation speed is increased, the combustion noise is increased, meanwhile, the combustion is unstable, the advanced alarm processing is needed, and the larger the load is, the larger the maximum rotation speed alarm point is;
(d) if the large subsection area has the same load point, the large subsection area is switched to, the rotating speed calculation and adjustment are carried out again, when the continuous 5s of adjusting rotating speed still occurs after the switching and reaches the maximum rotating speed of the corresponding load, the alarm processing is carried out, the gas valve is closed, the combustion is stopped, and the direct current fan (8) stops working after rotating for 10 s.
2. The wind speed self-adaptive control method of the direct-current variable-frequency gas water heater according to claim 1, characterized by comprising the following steps of: the calculation mode of the virtual pressure value is as follows: and when the rotating speed reaches the target rotating speed, calculating the virtual pressure value P as I/R.
3. The wind speed adaptive control method of the direct-current variable-frequency gas water heater according to claim 1 or 2, characterized by comprising the following steps of: when the range of the virtual pressure value smaller than the standard value is 0-10%, the influence on the whole machine is small, and the adjustment can be omitted.
4. The wind speed self-adaptive control method of the direct-current variable-frequency gas water heater according to claim 3, characterized by comprising the following steps of: and when the range of the virtual pressure value smaller than the standard value is larger than 10%, starting to adjust the rotating speed, adjusting for 50r/min every 500ms, calculating the P value in real time after adjustment, and stopping adjustment when the P value is larger than 95% of the standard P value.
5. The wind speed self-adaptive control method of the direct-current variable-frequency gas water heater according to claim 1, characterized by comprising the following steps of: when the rotating speed of the direct current fan (8) is adjusted continuously for 5s to reach the maximum rotating speed of the corresponding load, the combustion oxygen supply is seriously insufficient, if the same load point does not exist in a large section area, the alarm processing is carried out, a gas valve is closed, the combustion is stopped, and the direct current fan (8) stops working after rotating for 10 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249181.3A CN112460814B (en) | 2020-11-10 | 2020-11-10 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249181.3A CN112460814B (en) | 2020-11-10 | 2020-11-10 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112460814A true CN112460814A (en) | 2021-03-09 |
| CN112460814B CN112460814B (en) | 2022-02-11 |
Family
ID=74826269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011249181.3A Active CN112460814B (en) | 2020-11-10 | 2020-11-10 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460814B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932457A (en) * | 2021-11-23 | 2022-01-14 | 华帝股份有限公司 | Method for automatically matching combustion condition and wind speed of gas water heater |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58208536A (en) * | 1982-05-28 | 1983-12-05 | Matsushita Electric Ind Co Ltd | Controller for hot water feeder |
| JPH08313061A (en) * | 1995-05-18 | 1996-11-29 | Rinnai Corp | Fan heater |
| CN102192808A (en) * | 2010-03-19 | 2011-09-21 | 海尔集团公司 | Device and method for detecting wind pressure |
| 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 |
| 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 |
| CN203454411U (en) * | 2013-09-10 | 2014-02-26 | 北京汇通汇利技术开发有限公司 | Smoke discharging system of gas wall-hung boiler |
| CN104197467A (en) * | 2014-08-13 | 2014-12-10 | 上海三意电机驱动技术有限公司 | Fan coil working condition detecting and self-adaptation control method and equipment |
| 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 |
| CN108826700A (en) * | 2018-06-14 | 2018-11-16 | 芜湖美的厨卫电器制造有限公司 | For the control method of gas heater safeguard protection, device and gas heater |
| CN109489215A (en) * | 2018-11-13 | 2019-03-19 | 珠海格力电器股份有限公司 | A kind of wind speed self-adaptation control method, control device and unitary air handling unit |
| CN109579278A (en) * | 2018-12-11 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of multi fan tandem gas heater and control method |
| CN109869893A (en) * | 2019-01-29 | 2019-06-11 | 广东万和热能科技有限公司 | A kind of blower control method and system of gas heater |
| CN110220228A (en) * | 2018-03-01 | 2019-09-10 | 青岛海尔智慧厨房电器有限公司 | A kind of smoke machine cruise boosting method and kitchen ventilator |
| CN111059567A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Combustion control method for reducing minimum heat load |
| CN111141030A (en) * | 2018-11-02 | 2020-05-12 | 青岛经济技术开发区海尔热水器有限公司 | Control method of gas water heater and gas water heater |
| CN210624950U (en) * | 2019-06-18 | 2020-05-26 | 华帝股份有限公司 | Gas water heater |
| CN211261241U (en) * | 2019-07-30 | 2020-08-14 | 广东万和热能科技有限公司 | Gas self-adaptive full-premixing wall-mounted boiler |
-
2020
- 2020-11-10 CN CN202011249181.3A patent/CN112460814B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58208536A (en) * | 1982-05-28 | 1983-12-05 | Matsushita Electric Ind Co Ltd | Controller for hot water feeder |
| JPH08313061A (en) * | 1995-05-18 | 1996-11-29 | Rinnai Corp | Fan heater |
| CN102192808A (en) * | 2010-03-19 | 2011-09-21 | 海尔集团公司 | Device and method for detecting wind pressure |
| 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 |
| 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 |
| CN203454411U (en) * | 2013-09-10 | 2014-02-26 | 北京汇通汇利技术开发有限公司 | Smoke discharging system of gas wall-hung boiler |
| CN104197467A (en) * | 2014-08-13 | 2014-12-10 | 上海三意电机驱动技术有限公司 | Fan coil working condition detecting and self-adaptation control method and equipment |
| 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 |
| CN110220228A (en) * | 2018-03-01 | 2019-09-10 | 青岛海尔智慧厨房电器有限公司 | A kind of smoke machine cruise boosting method and kitchen ventilator |
| CN108826700A (en) * | 2018-06-14 | 2018-11-16 | 芜湖美的厨卫电器制造有限公司 | For the control method of gas heater safeguard protection, device and gas heater |
| CN111059567A (en) * | 2018-10-17 | 2020-04-24 | 宁波方太厨具有限公司 | Combustion control method for reducing minimum heat load |
| CN111141030A (en) * | 2018-11-02 | 2020-05-12 | 青岛经济技术开发区海尔热水器有限公司 | Control method of gas water heater and gas water heater |
| CN109489215A (en) * | 2018-11-13 | 2019-03-19 | 珠海格力电器股份有限公司 | A kind of wind speed self-adaptation control method, control device and unitary air handling unit |
| CN109579278A (en) * | 2018-12-11 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of multi fan tandem gas heater and control method |
| CN109869893A (en) * | 2019-01-29 | 2019-06-11 | 广东万和热能科技有限公司 | A kind of blower control method and system of gas heater |
| CN210624950U (en) * | 2019-06-18 | 2020-05-26 | 华帝股份有限公司 | Gas water heater |
| CN211261241U (en) * | 2019-07-30 | 2020-08-14 | 广东万和热能科技有限公司 | Gas self-adaptive full-premixing wall-mounted boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932457A (en) * | 2021-11-23 | 2022-01-14 | 华帝股份有限公司 | Method for automatically matching combustion condition and wind speed of gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112460814B (en) | 2022-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105222362B (en) | The control system of gas-fired water heater | |
| CN106885378A (en) | Gas heater wind resistance pressure control system | |
| KR101050412B1 (en) | Energy-saving kitchen ventilation control system and method | |
| CN205090630U (en) | Gas hot water system's control system | |
| CN104791963A (en) | Variable air volume (VAV) energy-saving control system for central air-conditioner | |
| CN109269087A (en) | Gas water-heating furnace and its monitoring adjusting method, heating system | |
| CN112460814B (en) | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater | |
| CN110186193B (en) | Control method of self-adaptive wind pressure and gas water heater | |
| CN101718502B (en) | Electric furnace flue gas waste heat recovering and temperature regulating device | |
| CN107120677A (en) | The method and system that a kind of combustion-supporting wind pressure of heating furnace is automatically controlled | |
| CN111721003A (en) | Water heater water temperature control method and water heater water temperature control system | |
| CN113932457B (en) | Method for automatically matching combustion condition and wind speed of gas water heater | |
| CN109737484B (en) | Heating system for gas heating water heater and control method thereof | |
| CN208794444U (en) | A kind of power plant boiler fire detecting probe cooling device | |
| CN110207362B (en) | Self-adaptive control method for air volume of gas water heater | |
| CN108980888B (en) | Gas heating equipment and control method thereof | |
| CN110966764B (en) | Control method of supercharged gas water heater and gas water heater | |
| CN113983694B (en) | Control method for minimum load matching start flow of gas water heater | |
| CN111121276B (en) | Gas water heater capable of preventing condensed water and control method | |
| CN110966749B (en) | Control method of supercharged gas water heater and gas water heater | |
| CN110186299B (en) | Control method of waste heat recovery system | |
| CN113446731A (en) | Low-loss high-efficiency wall-mounted gas boiler | |
| CN212299055U (en) | Cooling air device is examined to thermal power plant's boiler fire | |
| CN218379539U (en) | Fume exhaustor | |
| CN220397833U (en) | Strong pumping type gas water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |