CN110645713A - Control method of gas water heater - Google Patents
Control method of gas water heater Download PDFInfo
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- CN110645713A CN110645713A CN201910822387.1A CN201910822387A CN110645713A CN 110645713 A CN110645713 A CN 110645713A CN 201910822387 A CN201910822387 A CN 201910822387A CN 110645713 A CN110645713 A CN 110645713A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 1
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a control method of a gas water heater, wherein the gas water heater comprises a voltage stabilizing module, a load control module, a burner and a controller, the voltage stabilizing module, the load control module and the burner are sequentially connected, the controller is respectively in signal connection with the voltage stabilizing module and the load control module, and the control method comprises the following steps: detecting a primary pressure value of the voltage stabilizing module through the voltage stabilizing module; judging the gas pressure grade of the primary pressure value; the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at a gas pressure threshold corresponding to the gas pressure grade according to the gas pressure grade; the controller controls the load control module to work according to the target load, so that the gas water heater can be normally used, and the use experience of a user is promoted.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a control method of a gas water heater.
Background
In the related art, when a user uses a gas water heater, the difference between the gas pressure at the actual user end and the general primary pressure affects the use of the gas water heater, and particularly, when the primary pressure is relatively low, the difference affects the use of the gas water heater more seriously.
Because the primary pressure is lower, the secondary pressure is correspondingly lower, the continuous capacity of load adjustment of the gas water heater can be limited, the phenomenon of frequent fire change can occur, the normal use of the gas water heater is seriously influenced, and the use experience of a user is reduced.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior related art to a certain extent, and therefore the invention aims to provide a control method of a gas water heater, which can enable the gas water heater to be normally used and is beneficial to improving the use experience of users.
The above purpose is realized by the following technical scheme:
a control method of a gas water heater comprises a voltage stabilizing module, a load control module, a burner and a controller, wherein the voltage stabilizing module, the load control module and the burner are sequentially connected, and the controller is respectively in signal connection with the voltage stabilizing module and the load control module, and the control method comprises the following steps:
detecting a primary pressure value of the voltage stabilizing module through the voltage stabilizing module;
judging the gas pressure grade of the primary pressure value;
the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at a gas pressure threshold corresponding to the gas pressure grade according to the gas pressure grade;
and the controller controls the load control module to work according to the target load.
In some embodiments, the pressure stabilizing module comprises a gas switch valve, a first gas proportional valve and a pressure sensor, the load control module comprises a second gas proportional valve and a segment valve, the gas switch valve, the first gas proportional valve, the second gas proportional valve and the segment valve are sequentially connected, and the pressure sensor is connected between the first gas proportional valve and the second gas proportional valve.
In some embodiments, the step of detecting, by the voltage regulation module, the primary pressure value of the voltage regulation module is specifically:
the controller controls the first gas proportional valve to be adjusted to the maximum opening degree, and the primary pressure value of the first gas proportional valve is detected through the pressure sensor.
In some embodiments, the step of detecting, by the regulator module, the primary pressure value of the regulator module may be preceded by the steps of:
judging whether the original gas pressure meets the requirement of combustion;
if the original gas pressure meets the requirement of combustion, detecting a primary pressure value of the pressure stabilizing module through the pressure stabilizing module;
if the original gas pressure does not meet the combustion, a fault code is sent to prompt a user that the gas pressure is too low.
In some embodiments, the step of controlling, by the controller, the gas pressure value output by the pressure stabilizing module to be stabilized at the gas pressure threshold corresponding to the gas pressure level according to the gas pressure level is specifically:
the controller controls the first gas proportional valve to work according to the gas pressure grade so that the gas pressure value output by the first gas proportional valve is stabilized at a gas pressure threshold corresponding to the gas pressure grade.
In some embodiments, the gas pressure rating comprises a high pressure rating, a medium pressure rating, and a low pressure rating;
when the current gas pressure grade is judged to be a high pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1800pa to 2200 pa;
when the current gas pressure grade is judged to be the medium pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1300pa to 1700 pa;
when the current gas pressure grade is judged to be the low pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 800pa to 1200 pa.
In some embodiments, the step of controlling, by the controller, the load control module to operate according to the target load specifically includes:
and the controller controls the load control module to work through a table look-up method according to the target load.
In some embodiments, the step of controlling, by the controller, the load control module to operate according to the target load specifically includes:
the controller controls the operation of the segment valve and/or the opening degree of the second gas proportional valve according to a target load.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the control method of the gas water heater is simple and reasonable, can ensure the normal use of the gas water heater, ensures the continuous load adjustment capacity of the gas water heater, realizes accurate temperature control, and is beneficial to improving the use experience of users.
Drawings
FIG. 1 is a schematic structural diagram of a gas water heater in an embodiment of the invention;
FIG. 2 is a block circuit diagram of a gas water heater in an embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method according to an embodiment of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
The first embodiment is as follows: as shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides a control method of a gas water heater, the gas water heater includes a voltage stabilizing module, a load control module, a burner and a controller, wherein the voltage stabilizing module, the load control module and the burner are sequentially connected, the controller is respectively in signal connection with the voltage stabilizing module and the load control module, and the control method includes:
detecting a primary pressure value of the voltage stabilizing module through the voltage stabilizing module;
judging the gas pressure grade of the primary pressure value;
the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at a gas pressure threshold corresponding to the gas pressure grade according to the gas pressure grade;
and the controller controls the load control module to work according to the target load.
The control method of the gas water heater of the embodiment comprises the steps of detecting a primary pressure value of the gas water heater, judging a gas pressure grade according to the primary pressure value, and controlling the gas pressure value to be stabilized at a gas pressure threshold value corresponding to the gas pressure grade according to the gas pressure grade, so that the influence of the difference of the primary pressure caused by the difference of the using environments of different users on the normal use of the gas water heater can be avoided, the control method of the gas water heater of the embodiment can stabilize the primary pressure at the gas pressure threshold value corresponding to the difference of the primary pressure caused by the difference of the using environments of the different users, the continuous capacity of load adjustment of the gas water heater and the normal use of the gas water heater are ensured, the accurate temperature control is realized, and the use experience of users is improved.
In this embodiment, the pressure stabilizing module includes a gas switch valve 1, a first gas proportional valve 2 and a pressure sensor 3, the load control module includes a second gas proportional valve 4 and a segment valve 5, the gas switch valve 1, the first gas proportional valve 2, the second gas proportional valve 4 and the segment valve 5 are connected in sequence, and the pressure sensor 3 is connected between the first gas proportional valve 2 and the second gas proportional valve 4. By establishing a pressure stabilizing module comprising a pressure sensor 3, a gas switch valve 1 and a first gas proportional valve 2, the primary pressure is stabilized and locked at a fixed gas pressure threshold value according to the high, medium and low pressure level of the primary pressure, so that the continuous capacity of load regulation of the gas water heater is ensured. By establishing a load control module of 'target load-second gas proportional valve 4-segment valve 5', according to the target load, accurate load control is realized, including but not limited to adjusting secondary pressure and controlling the opening and closing of the segment valve.
Further, the step of detecting the primary pressure value of the voltage stabilizing module through the voltage stabilizing module specifically comprises:
the controller controls the first gas proportional valve 2 to adjust to the maximum opening degree, and the pressure sensor 3 detects the primary pressure value of the first gas proportional valve 2. Therefore, the primary pressure value of the first gas proportional valve 2 can be accurately detected, and the gas pressure grade of the first gas proportional valve can be judged according to the detected primary pressure value.
In this embodiment, the step of detecting the primary pressure value of the voltage stabilizing module by the voltage stabilizing module includes the following steps:
judging whether the original gas pressure meets the requirement of combustion;
if the original gas pressure meets the requirement of combustion, detecting a primary pressure value of the pressure stabilizing module through the pressure stabilizing module;
if the original gas pressure does not meet the combustion, a fault code is sent to prompt a user that the gas pressure is too low.
Through the steps, the use safety of the gas water heater can be improved, and the gas water heater is prevented from being continuously controlled to work under the condition that the original gas pressure does not meet the combustion condition.
Further, the step that the controller controls the gas pressure value output by the voltage stabilizing module to be stabilized at the gas pressure threshold corresponding to the gas pressure grade according to the gas pressure grade specifically comprises the following steps:
the controller controls the first gas proportional valve 2 to work according to the gas pressure grade so that the gas pressure value output by the first gas proportional valve 2 is stabilized at a gas pressure threshold corresponding to the gas pressure grade. The step is reasonable and ingenious in design, and the gas pressure value output by the first gas proportional valve 2 can be effectively stabilized at the gas pressure threshold corresponding to the gas pressure grade.
Further, the gas pressure grade comprises a high pressure grade, a medium pressure grade and a low pressure grade;
when the current gas pressure grade is judged to be a high pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1800pa to 2200pa, and preferably, the gas pressure value is stabilized at 2000 pa;
when the current gas pressure grade is judged to be the medium pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1300pa to 1700pa, and preferably, the gas pressure value is stabilized at 1500 pa;
when the current gas pressure grade is judged to be the low pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 800pa to 1200pa, and preferably, the gas pressure value is stabilized at 1000 pa.
The control method of the gas water heater can stabilize the primary pressure at the gas pressure threshold value corresponding to the primary pressure according to the difference of the primary pressure caused by different use environments of different users, thereby ensuring the continuous load regulation capacity of the gas water heater and the normal use of the gas water heater, realizing accurate temperature control and being beneficial to improving the use experience of the users.
Preferably, the step of controlling the load control module to work by the controller according to the target load specifically includes:
and the controller controls the load control module to work through a table look-up method according to the target load.
More preferably, the step of controlling the load control module to work by the controller according to the target load specifically includes:
the controller controls the operation of the segment valve 5 and/or the opening degree of the second gas proportional valve 4 according to the target load. In this embodiment, the segment valve 5 includes a segment valve i, a segment valve ii, and a segment valve iii, the segment valve i, the segment valve ii, and the segment valve iii respectively correspond to 2 different fire rows in the combustor, and the closing of 6 fire rows in the combustor is realized by controlling the closing of the segment valve i, the segment valve ii, and/or the segment valve iii.
The specific relationship table of the gas pressure grade, the opening degree of the proportional valve, the fire grate number and the corresponding load table can be seen in the following table 1. Firstly, finding out a corresponding load table according to the judged gas pressure grade, and then obtaining the fire grate quantity needing to be opened of the combustor and the opening degree of the second gas proportional valve according to the corresponding load table, thereby realizing the opening degree control of the segment valve and the second gas proportional valve 4.
TABLE 1
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (8)
1. A control method of a gas water heater is characterized in that the gas water heater comprises a voltage stabilizing module, a load control module, a burner and a controller, wherein the voltage stabilizing module, the load control module and the burner are sequentially connected, the controller is respectively in signal connection with the voltage stabilizing module and the load control module, and the control method comprises the following steps:
detecting a primary pressure value of the voltage stabilizing module through the voltage stabilizing module;
judging the gas pressure grade of the primary pressure value;
the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at a gas pressure threshold corresponding to the gas pressure grade according to the gas pressure grade;
and the controller controls the load control module to work according to the target load.
2. The control method of the gas water heater according to claim 1, wherein the pressure stabilizing module comprises a gas switch valve (1), a first gas proportional valve (2) and a pressure sensor (3), the load control module comprises a second gas proportional valve (4) and a segment valve (5), the gas switch valve (1), the first gas proportional valve (2), the second gas proportional valve (4) and the segment valve (5) are connected in sequence, and the pressure sensor (3) is connected between the first gas proportional valve (2) and the second gas proportional valve (4).
3. The control method of the gas water heater according to claim 2, wherein the step of detecting the primary pressure value of the pressure stabilizing module by the pressure stabilizing module is specifically as follows:
the controller controls the first gas proportional valve (2) to be adjusted to the maximum opening degree, and the primary pressure value of the first gas proportional valve (2) is detected through the pressure sensor (3).
4. The control method of a gas water heater according to claim 3, wherein the step of detecting the primary pressure value of the pressure stabilizing module by the pressure stabilizing module is preceded by the steps of:
judging whether the original gas pressure meets the requirement of combustion;
if the original gas pressure meets the requirement of combustion, detecting a primary pressure value of the pressure stabilizing module through the pressure stabilizing module;
if the original gas pressure does not meet the combustion, a fault code is sent to prompt a user that the gas pressure is too low.
5. The control method of the gas water heater according to claim 2, wherein the step of controlling, by the controller, the gas pressure value output by the pressure stabilizing module to be stabilized at the gas pressure threshold corresponding to the gas pressure level according to the gas pressure level specifically comprises:
the controller controls the first gas proportional valve (2) to work according to the gas pressure grade so that the gas pressure value output by the first gas proportional valve (2) is stabilized at a gas pressure threshold corresponding to the gas pressure grade.
6. The control method of a gas water heater according to any one of claims 1 to 5, wherein the gas pressure level includes a high pressure level, a medium pressure level and a low pressure level;
when the current gas pressure grade is judged to be a high pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1800pa to 2200 pa;
when the current gas pressure grade is judged to be the medium pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 1300pa to 1700 pa;
when the current gas pressure grade is judged to be the low pressure grade, the controller controls the gas pressure value output by the pressure stabilizing module to be stabilized at 800pa to 1200 pa.
7. The control method of the gas water heater according to claim 2, wherein the step of controlling the operation of the load control module by the controller according to the target load is specifically as follows:
and the controller controls the load control module to work through a table look-up method according to the target load.
8. The control method of the gas water heater according to claim 7, wherein the step of controlling the operation of the load control module by the controller according to the target load is specifically as follows:
the controller controls the work of the section valve (5) and/or the opening degree of the second gas proportional valve (4) according to the target load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822387.1A CN110645713B (en) | 2019-09-02 | 2019-09-02 | Control method of gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910822387.1A CN110645713B (en) | 2019-09-02 | 2019-09-02 | Control method of gas water heater |
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| CN110645713A true CN110645713A (en) | 2020-01-03 |
| CN110645713B CN110645713B (en) | 2021-08-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB195039A (en) * | 1922-03-15 | 1923-05-31 | Gustaf Elis Sandstrom | Improvements in or relating to automatic regulating devices for use in heating installations for liquids or gases |
| DE2848866A1 (en) * | 1977-11-21 | 1979-05-23 | Saunier Duval | CONTROL DEVICE FOR THE FLOW RATE OF A SUCTION FAN |
| CN201028077Y (en) * | 2007-04-18 | 2008-02-27 | 广东万和集团有限公司 | Gas pressure stabilizing control valve of gas water heater |
| CN106482149A (en) * | 2016-11-28 | 2017-03-08 | 无锡市莱达热工工程有限公司 | Combustion system manifold structure |
| CN106556151A (en) * | 2015-09-30 | 2017-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of fuel gas of fuel gas water heater automatic pressure unit and method |
-
2019
- 2019-09-02 CN CN201910822387.1A patent/CN110645713B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB195039A (en) * | 1922-03-15 | 1923-05-31 | Gustaf Elis Sandstrom | Improvements in or relating to automatic regulating devices for use in heating installations for liquids or gases |
| DE2848866A1 (en) * | 1977-11-21 | 1979-05-23 | Saunier Duval | CONTROL DEVICE FOR THE FLOW RATE OF A SUCTION FAN |
| CN201028077Y (en) * | 2007-04-18 | 2008-02-27 | 广东万和集团有限公司 | Gas pressure stabilizing control valve of gas water heater |
| CN106556151A (en) * | 2015-09-30 | 2017-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of fuel gas of fuel gas water heater automatic pressure unit and method |
| CN106482149A (en) * | 2016-11-28 | 2017-03-08 | 无锡市莱达热工工程有限公司 | Combustion system manifold structure |
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