CN111189230B - Automatic control method of gas water heater and gas water heater - Google Patents
Automatic control method of gas water heater and gas water heater Download PDFInfo
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- CN111189230B CN111189230B CN201811359524.4A CN201811359524A CN111189230B CN 111189230 B CN111189230 B CN 111189230B CN 201811359524 A CN201811359524 A CN 201811359524A CN 111189230 B CN111189230 B CN 111189230B
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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 relates to the technical field of gas water heaters, in particular to an automatic control method of a gas water heater and the gas water heater using the method. The method judges the supply side of the fan through the motor difference of different fan supply sides, and calls a working program corresponding to the fan of the supply side of the gas water heater according to the judgment result to control the gas water heater to work. According to the automatic control method for the gas water heater, when the gas water heater works, the supply party of the fan is judged firstly, and the program parameters of the gas water heater corresponding to the fan of the supply party are called according to the obtained specific fan motor information, so that the same air-fuel ratio corresponding to different fans can be ensured. Meanwhile, in the later maintenance process, the program matching problem caused by fan difference can be reduced, and the after-sale maintenance cost is reduced.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to an automatic control method of a gas water heater and the gas water heater using the method.
Background
The existing fan of the forced-ventilated type gas water heater plays a role in supplying air for gas combustion, and the fan is more and more widely used on the gas water heater due to the stepless speed regulation characteristic of the direct-current brushless motor. However, the detection and the closed-loop control of the air quantity of the fan are difficult to realize, so that the existing manufacturers adopt the rotating speed to control, and the rotating speed of the fan and the opening of the proportional valve are in one-to-one correlation in a program to realize the closed-loop control. The whole machine controller is ensured to calculate the gas consumption according to the detected water flow signal and the temperature difference between the inlet water and the outlet water, calculate the air supply quantity required to be provided by the fan according to the air-fuel ratio, further calculate the rotating speed of the fan, realize the closed-loop control of the rotating speed, and thus, the control on the program is easier to realize. However, when the fans have different suppliers, and the fans are controlled by using the same program due to design differences of different manufacturers, the effective air volume provided by the same program control rotating speed may have differences, which easily causes the problems of standard exceeding of smoke, or influence on ignition, fire transmission and the like due to overlarge air volume.
Aiming at the problem that fans cannot be commonly used due to the difference of design schemes of different suppliers, the current method commonly used by enterprises comprises the following steps:
1. one supplier is restricted to use.
2. Different fan suppliers are matched, and the whole machine uses different program parameters.
3. And all fan suppliers are limited to be completely designed according to the first supplier.
But the use of one fan supplier is limited, and when the product demand is large, the single-point supply has certain quality and purchase risks. Different fan suppliers are matched, the whole machine can bring much inconvenience to the universality and after-sale maintenance of parts by using different program parameters, and the quality problem is easy to occur due to mixed use. The fan supplier is limited to be designed according to the first supplier completely, due to the difference of the supplier design schemes, the number of part molds of the supplier is increased, the fan model selection is limited, and the development period is prolonged.
Therefore, the patent needs to provide an automatic control method for a gas water heater, which can solve the problem that fans cannot be used in the same gas water heater due to the difference of design schemes of different suppliers in the prior art.
Disclosure of Invention
The invention aims to provide an automatic control method of a gas water heater, which can enable fans provided by different suppliers to be universal in the same gas water heater.
In order to achieve the purpose, the invention adopts the following technical scheme:
the automatic control method of the gas water heater is provided, the power supply sides of the fans are judged according to the motor difference of different fan power supply sides, and the working programs corresponding to the fans of the power supply sides are called according to the judgment results to control the gas water heater to work.
As a preferred mode of the present invention, after the motor of the fan provided by each fan supplier is powered on, the fan is delayed for a period of time and then operates, and the motor delay time Δ t preset by different suppliers i Otherwise, the controller is used for controlling the fan to be powered on according to the power-on time T of the motor of the fan 1 And motor speed signal level of the fanTime of mutation T 2 And judging the power supply side of the fan according to the difference value delta T.
As a preferred mode of the invention, the motor delay time delta t of each fan i And the motor power-on time T of the fan 1 And the motor rotating speed signal level sudden change time T 2 Should satisfy the following condition:
t 1 +Δt i ≤△T≤t 2 +Δt i wherein the blower is provided for the ith supplier, t 1 And t 2 And the minimum value and the maximum value of the starting time of the motor during delayed running are not set for the motor.
As a preferred embodiment of the present invention, if Δ t is obtained 3 Satisfies the following conditions: t is t 2 +△ t 3 When the delta T is less than or equal to delta T, the motor of the fan cannot be started normally, and the whole machine gives an alarm.
As a preferred mode of the present invention, the alarm of the whole machine includes: the display screen lights up and displays a fault and/or beep alert.
As a preferred mode of the present invention, the motor delay operation time Δ t of the fan is set to be shorter than the motor delay operation time Δ t of the fan 1 ＝0。
As a preferred mode of the present invention, the motor delay operation time Δ t of the fan is set to be shorter than the motor delay operation time Δ t of the fan i The value range is 200ms to 1800ms, inclusive.
In a preferred embodiment of the present invention, t is 3 The value range of (A) is 2000 ms-5000 ms.
The invention also provides a gas water heater, which is characterized by working by using the automatic control method of the gas water heater.
The invention has the beneficial effects that:
according to the automatic control method for the gas water heater, when the gas water heater works, the supply party of the fan is judged first, program parameters of the gas water heater corresponding to the fan of the supply party are called according to the obtained specific fan motor information, the same air-fuel ratio corresponding to different fans can be ensured, the method is favorable for reducing the development period, the universality is higher, the compatibility of the fans of multiple supply parties can be realized, and the quality and the purchase risk of the fan can be effectively controlled. Meanwhile, in the later maintenance process, the program matching problem caused by fan difference can be reduced, and the after-sale maintenance cost is reduced.
Drawings
Fig. 1 is a schematic flow chart of an automatic control method for a gas water heater according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an automatic control method for a gas water heater according to a second embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
Example one
Fig. 1 is a flowchart of an automatic control method for a gas water heater according to an embodiment of the present invention. The automatic control method of the gas water heater provided by the embodiment is used for the gas water heater capable of being provided with different supply fans. The method provided in this embodiment is used in a scenario where different supplier fans are used as gas water heater fans. The automatic control method for the gas water heater provided by the embodiment can be executed by a main control board of the gas water heater, and the method can also be realized in a software mode and integrated in the gas water heater.
The method for automatically controlling the gas water heater provided by the embodiment specifically comprises the steps of judging the power supply sides of the fans according to the motor differences of different fan power supply sides, and calling a working program corresponding to the fan of the power supply side of the gas water heater according to a judgment result to control the gas water heater to work.
The automatic control method for the gas water heater provided by the embodiment uses the following scenes:
after the fan is powered on by the whole gas water heater, the fan is started to clean the fan, and at the moment when the fan is started in the process, the controller obtains the specific information of the motor of the fan arranged in the gas water heater. And the controller calls a program of the gas water heater corresponding to the type of the fan according to the obtained specific information of the fan to drive the gas water heater to work.
According to the method provided by the embodiment, when a user opens the gas water heater, the gas water heater controller judges the fan difference firstly, and calls program parameters corresponding to the fan according to the obtained specific fan information, so that the different fans correspond to the same air-fuel ratio to realize the method, the method can identify the fan information provided by different suppliers, and can also identify the fans of different specifications provided by the same supplier, the universality is higher, the fan difference is automatically identified through the program, different control parameters are called to ensure combustion, and abnormal combustion caused by the fan performance difference of different suppliers can be effectively avoided.
Specifically, referring to fig. 1, the method specifically comprises the following steps:
s101, starting a gas water heater;
s102, judging a supplier to which the fan belongs;
and S103, calling a working program corresponding to the gas water heater and the supply fan to control the gas water heater to work.
Example two
As shown in fig. 2, the automatic control method for a gas water heater provided in this embodiment specifically includes applying the method to a gas water heater capable of installing fans of different suppliers, delaying the operation of the fans provided by each supplier for a period of time after the motors of the fans are powered on, setting different motor delay times between the suppliers, and setting a controller according to the motor power-on time T of each fan 1 Motor rotation speed signal level mutation time T of fan 2 And judging the power supply side of a fan motor in the gas water heater according to the difference value delta T, and calling a gas water heater working program corresponding to the fan according to the judged fan information to control the gas water heater to work.
Specifically, the delay time of the fan motor is Δ t i I is more than or equal to 2, that is to say, the method can be used for identifying the information of two or more supplier fans and matching the information with different informationA drive parameter.
Motor delay time deltat for each fan i And the motor power-on time T of the fan 1 And the motor rotating speed signal level sudden change time T 2 Should satisfy the following difference Δ T: t is t 1 +Δt i ≤△T≤t 2 +Δt i . That is, the delay operation time of the motor of each fan is different, the water heater driver detects the power-on time T1 of the motor and the level mutation time T of the motor speed signal of the fan 2 The ranges of the difference value delta T are also different, and the obtained difference value delta T is judged to be specifically located in which range, so that which supplier the fan belongs to can be clearly obtained. The gas water heater stores different gas water heater working programs corresponding to different fan suppliers.
It should be noted that, in this embodiment, it may be limited that the motor of the blower provided by one of the power suppliers is started without delay, that is, the motor runs immediately after being powered on, and the motor delay time Δ t of the blower provided by the first power supplier 1 Is 0. But the supplier fan should satisfy t 1 ≤△T≤t 2 Wherein t is 1 And t 2 And when the delay operation time is not set after the motor is powered on, the upper limit value and the lower limit value of the normal starting time of the fan are set. Because the power-on delay operation time is set, the delta T of the fan which is set to be in power-on delay operation is different from the delta T of the fan which is not set to be in power-on delay operation. In addition, when the fan has multiple suppliers or multiple schemes, in order to distinguish fan information, the scheme may be adopted, and the fan supplier sets different delay power-on time Δ t in the motor program i Value, motor delay power-on time delta t of fan i The value range is 200 ms-1800 ms, and the specific value can be selected according to the requirement, but the value written in the program of the gas water heater is a point value.
Wherein t is 1 And t 2 The value of (d) is defined according to the actual test, and is not specifically limited in this embodiment, but it should be a natural number, which is related to the power-on of the whole machine program and the setting of the motor program PI. For the detection of the blower incapable of operating normally, the embodiment also has corresponding limitation, that is, whether the comparison difference Δ T meets T or not is compared 2 +△ t 3 ≤△And T, if the T is met, the motor of the fan is judged to be in fault, the controller controls the whole machine to give an alarm at the moment, and the display screen is lightened to display the fault or directly buzz for reminding. t is t 3 Is a specific parameter, t 3 The value range is 2000 ms-5000 ms, and the specific value can be selected according to the requirement, but the value written in the program of the gas water heater is a point value.
The automatic control method for the gas water heater provided by the embodiment uses the following scenes:
taking two suppliers as an example, when the gas water heater is ignited, if t is 1 +Δt 1 ≤△T≤t 2 +Δt 1 And then the controller calls a working program of the gas water heater corresponding to the first supply fan to control the water heater to work. If t is 1 +Δt 2 ≤△T≤t 2 +Δt 2 And when the fan is used, the controller judges the fan provided by the second supplier, and then calls a corresponding working program of the gas water heater corresponding to the second supplier fan to control the water heater to work.
Specifically, referring to fig. 2, taking a plurality of fan suppliers as an example, the method specifically includes the following steps:
s201, starting a gas water heater;
s202, the controller obtains the motor electrifying time T of the fan 1 And motor rotating speed signal level sudden change time T 2 A difference Δ T of;
s203, judging whether delta T meets T 2 +t 3 Delta T is less than or equal to; if yes, go to step S204; if not, go to step S205;
s204, alarming: a fan failure;
s205, determining Delta t 1 +t 1 ≤△T≤t 2 +Δt 1 If yes, go to step S206; if not, go to step S206;
s206, the fan is provided for a first supplier, and the controller calls a working program of the gas water heater corresponding to the fan of the first supplier;
s207, judging whether delta T meets T 1 +Δt 2 ≤△T≤t 2 +Δt 2 If yes, go to step S208; if not, executing step S209;
s208, the fan is provided for the second supplier, and the controller calls a working program of the gas water heater corresponding to the fan of the first supplier;
s209, judging whether DeltaT satisfies T 1 +Δt 3 ≤△T≤t 2 +Δt 3 If yes, go to step S210; if not, go to step S211;
s210, the fan is provided for a third supplier, and the controller calls a working program of the gas water heater corresponding to the fan of the third supplier;
……
s211, judging whether DeltaT satisfies T 1 +Δt i-1 ≤△T≤t 2 +Δt i-1 If yes, go to step S212; if not, go to step S213;
s212, the fan is provided for the (i-1) th supplier, and the controller calls a working program of the gas water heater corresponding to the fan of the (i-1) th supplier;
and S213, the fan is provided for the ith supplier, and the controller calls the working program of the gas water heater corresponding to the fan of the ith supplier.
It should be noted that, when two or more fan suppliers exist, whether different delay time and different power-on time needs to be set for distinguishing can be determined according to whether the fans are different.
When the number of the fan suppliers is more than two, the judgment method is the same as that provided by the embodiment, namely, the judgment methods of delta T and delta T are both carried out i And satisfying which relationship to judge which supplier the fan belongs to.
In the method provided by this embodiment, when the user turns on the gas water heater, the motor of the fan is powered on, and since different fan delay power-on times are set for the fans of different suppliers in this embodiment, this embodiment may be implemented according to the power-on time T of the motor of each fan 1 And motor rotating speed signal level sudden change time T 2 The difference value delta T is used for judging specific fan information, and program parameters corresponding to the fan information are called according to the obtained specific fan information, so that different fans can be ensured to correspond to each otherThe method is favorable for reducing the development period, has stronger universality, can realize the compatibility of fans of a plurality of suppliers, and can effectively control the quality and the purchasing risk of the fans. Meanwhile, in the later maintenance process, the program matching problem caused by fan difference can be reduced, and the after-sale maintenance cost is reduced.
The embodiment also provides a gas water heater, two or more fan supply directions of the gas water heater can exist, and the gas water heater works by using the automatic control method of the gas water heater provided by the embodiment.
The gas water heater provided in this embodiment can transfer the program control parameter corresponding to this fan information according to the concrete fan information that obtains, guarantees that the same air-fuel ratio that different fans correspond realizes. This gas heater requires to be favorable to reducing the development cycle to the parameter of fan, and the commonality is stronger to can realize the fan motor compatibility of a plurality of suppliers, can be effectual accuse fan quality and purchase risk. Meanwhile, in the later maintenance process, the program matching problem caused by fan difference can be reduced, and the after-sale maintenance cost is reduced.
It is noted that the foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims and their equivalents.
Claims (8)
1. An automatic control method of a gas water heater is characterized in that the power supply sides of fans are judged according to the motor difference of the power supply sides of different fans, and working programs corresponding to the fans of the power supply sides of the gas water heater are called according to the judgment results to control the gas water heater to work; after the motor of the fan provided by each fan supplier is powered on, the fan is delayed for a period of time to operate, and the motors preset by different suppliersTime delay time Deltat i Otherwise, the controller is used for controlling the fan to be powered on according to the power-on time T of the motor of the fan 1 And the motor rotating speed signal level mutation time T of the fan 2 And judging the power supply side of the fan according to the difference value delta T.
2. The automatic control method of a gas water heater according to claim 1, wherein the motor delay time Δ t of each fan i And the motor power-on time T of the fan 1 And the motor rotating speed signal level sudden change time T 2 Should satisfy the following condition:
t 1 +Δt i ≤△T≤t 2 +Δt i ，
wherein the blower is provided for the ith supplier, t 1 And t 2 And the minimum value and the maximum value of the starting time of the motor during delayed running are not set for the motor.
3. The automatic control method of a gas water heater according to claim 1 or 2, characterized in that if the obtained Δ T satisfies: t is t 2 +t 3 When the delta T is less than or equal to the delta T, the motor of the fan cannot be started normally, and the whole machine gives an alarm.
4. The automatic control method of the gas water heater according to claim 3, wherein the complete machine alarm comprises: the display screen lights up and displays a fault and/or beep alert.
5. The automatic control method for a gas water heater according to claim 1, wherein the motor delay operation time Δ t of the fan is 1 ＝0。
6. The automatic control method of a gas water heater according to claim 1, wherein the motor delay running time Δ t of the fan i The value range is 200ms to 1800ms, inclusive.
7. The automatic control method of a gas water heater according to claim 3, wherein said t is 3 The value of (a) is in the range of 2000ms to 5000ms, inclusive.
8. A gas water heater operating by using the automatic control method of the gas water heater according to any one of claims 1 to 7.
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| CN113898949B (en) * | 2021-10-18 | 2023-05-26 | 东莞市艾瑞科热能设备有限公司 | Balanced control method of sectional type burner, burner and wall-mounted furnace |
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| JP4409157B2 (en) * | 2002-10-02 | 2010-02-03 | パナソニックエコシステムズ株式会社 | Fan motor and electrical equipment equipped with it |
| JP4605106B2 (en) * | 2006-06-29 | 2011-01-05 | パナソニック株式会社 | Gas appliance monitoring device |
| JP4713520B2 (en) * | 2007-02-28 | 2011-06-29 | リンナイ株式会社 | Combustion equipment |
| US7821218B2 (en) * | 2008-04-22 | 2010-10-26 | Emerson Electric Co. | Universal apparatus and method for configurably controlling a heating or cooling system |
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