CN109612111B - Method for controlling gas water heater with storage tank - Google Patents
Method for controlling gas water heater with storage tank Download PDFInfo
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- CN109612111B CN109612111B CN201811206527.4A CN201811206527A CN109612111B CN 109612111 B CN109612111 B CN 109612111B CN 201811206527 A CN201811206527 A CN 201811206527A CN 109612111 B CN109612111 B CN 109612111B
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
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Abstract
The invention discloses a method for controlling a gas water heater with a storage tank, which comprises the following steps: electrifying the water heater; after the water heater is powered on, the sensor function self-checking module performs self-checking on all sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm; after the sensor self-check is finished and all the conditions are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the abnormal condition is found, the alarm unit can give an alarm, and the environment temperature sensor can detect the outside temperature; according to the method, whether a combustible steam event occurs is judged by comparing the gas quantity consumed by heating the same unit of water quantity with the data of the normal consumption in the current period, so that the fault caused by the abnormality of the FV sensor can be avoided. According to the method, the gas and water quantity are accurately controlled, so that the data obtained by the method are more accurate, and the probability of error detection is reduced.
Description
Technical Field
The invention belongs to the technical field of water heaters, and particularly relates to a method for controlling a gas water heater with a storage tank.
Background
In gas furnace systems, various types of sensors are commonly used to provide information that controls the operation of the system. For example, in a domestic water heater, an immersion sensor may be used within the water tank to monitor the water temperature. Commercial water heaters typically operate at higher temperatures than residential units and may have a pair of immersion sensors, one at the top of the tank and one at the bottom of the tank. The heating is typically stopped when the water temperature reaches the set temperature and is started when the temperature falls below the temperature range. Water heaters are also often equipped with a combustible vapor (FV) sensor to detect the presence of combustible vapors. The presence of steam may be detected by monitoring the resistance level of the FV sensor using a signal comparator. For example, a typical FV sensor resistance may be on the order of 10,000 ohms, which may quickly increase to about 50,000 ohms in the presence of flammable vapors. The supply of gas to the heater is typically shut off if the FV sensor exhibits a high resistance as sensed by the signal comparator.
However, the inventors have observed that FV sensors may experience resistance changes due to general aging, even in mild environments. Chemical vapors, such as chlorine, which is common in household bleaches, can accelerate this process. Over time, the FV sensor may exhibit progressively greater resistance sufficient to cause a false shutdown of the furnace system. On the other hand, the inventors have observed that the resistance of the FV sensor may gradually decrease over time, and in the event of a flammable vapor event, may decrease to such a low level that a shutdown of the heating system is not triggered.
The existing water heater is not easy to leak gas, and has certain danger when an FV sensor is abnormal, and a method for controlling the gas water heater with the storage tank is provided to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a method for controlling a gas water heater with a storage tank, which aims to solve the problems that the existing water heater in the prior art is difficult to cause gas leakage and has certain danger when an FV sensor is abnormal in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of controlling a gas water heater having a storage tank, comprising the steps of:
s1, after confirming that no flammable and combustible articles exist around the water heater, electrifying the water heater;
s2, after the water heater is powered on, the sensor function self-checking module performs self-checking on all the sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm;
s3, after the sensor self-check is finished and all the parts are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the sensor self-check is abnormal, the alarm unit can give an alarm, the environment temperature sensor can detect the outside temperature, and when the temperature is higher than 70 ℃, the alarm unit can give an alarm;
s4, detecting whether the gas is burnt or not by the combustion state monitoring unit when the water heater works after the detection is normal in S3, and timing by the timer after the burning is confirmed;
s5, controlling the gas release amount by the gas flow control unit according to the gas pressure detected by the gas pressure sensor to control the size of a gas output pipeline electromagnetic valve switch, and detecting the flow in the gas pipe by the gas flow detection unit;
s6, the gas combustion amount calculating unit multiplies the flow data in the gas pipe according to the timing of the timer and the flow data detected by the gas flow detecting unit to obtain the result, and the combustion use amount of the gas is obtained;
s7, after the combustion state is detected by the combustion state monitoring unit by the water flow control unit, the water pipe electromagnetic valve is controlled to control the water flow according to the water pressure detected by the water pressure detection sensor, and the water flow calculation unit multiplies the data counted by the timer by the water flow controlled by the water flow control unit to obtain the total amount of the output water;
s8, a normal temperature water temperature monitoring sensor can detect water temperature at normal temperature in real time, a water temperature monitoring sensor in the storage tank detects water temperature data in the storage tank, and a gas quantity and water temperature relation comparison unit collates the data measured by the water temperature monitoring sensor in the storage tank, the normal temperature water temperature monitoring sensor, the gas combustion quantity calculation unit and the water quantity calculation unit and calls data in a relation comparison database of gas consumption and equivalent water temperature at different normal temperature for comparison;
and S9, when the comparison data is smaller than the set value and the error range, the alarm unit gives an alarm.
Preferably, the harmful gas detected by the harmful gas detecting unit in S3 is methane, carbon monoxide, formaldehyde and PM2.5, and the harmful gas detecting unit includes a methane sensor, a carbon monoxide sensor, and a formaldehyde sensor and a PM2.5 monitor mounted at the lower part of the water heater housing.
Preferably, the timer in S4 stops timing each time the combustion state monitoring unit detects that the gas is not combusted, and resets to zero.
Preferably, in S5, when the gas pressure sensor detects that the pressure in the pipe is zero, the gas flow control unit does not control the gas output pipeline solenoid valve to open.
Preferably, when the water pressure detected by the water pressure detection sensor is zero in S7, the water flow control unit does not control the opening of the water pipe electromagnetic valve any more, and the water pressure alarm gives an alarm at the same time.
Preferably, in S8, at the same normal temperature, the combustion usage amount of the gas calculated in S6 is divided by the total amount of output water calculated in S7 to obtain the gas amount consumed per unit amount of water, and the determination is made by comparing the gas consumption amount at different normal temperatures with the temperature data in the same temperature stage in the comparison database based on the temperature result obtained by subtracting the data measured by the normal temperature water temperature monitoring sensor from the data measured by the water temperature monitoring temperature sensor in the storage tank.
Preferably, the alarm unit in S9 includes a fan and an air cleaning device.
Preferably, the air purification device and the fan are both arranged outside the water heater.
The invention has the technical effects and advantages that: compared with the prior art, the method for controlling the gas water heater with the storage tank provided by the invention comprises the following steps:
1. according to the method, whether a combustible steam event occurs is judged by comparing the gas quantity consumed by heating the same unit of water quantity with the data of the normal consumption in the current period, so that the fault caused by the abnormality of the FV sensor can be avoided.
2. According to the method, the gas and water quantity are accurately controlled, so that the data obtained by the method are more accurate, and the probability of error detection is reduced.
Drawings
FIG. 1 is a schematic diagram of the work flow structure of the present invention.
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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.
Example one
The present invention provides a method of controlling a gas water heater having a storage tank as shown in fig. 1, comprising the steps of:
s1, after confirming that no flammable and combustible articles exist around the water heater, electrifying the water heater;
s2, after the water heater is powered on, the sensor function self-checking module performs self-checking on all the sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm;
s3, after the sensor self-check is completed and all the parts are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the abnormal condition is found, the alarm unit can give an alarm, the environment temperature sensor can detect the outside temperature, when the temperature is 71 ℃, the alarm unit can give an alarm, the harmful gas detected by the harmful gas detection unit is methane, carbon monoxide, formaldehyde and PM2.5, and the harmful gas detection unit comprises a methane sensor, a carbon monoxide sensor, a formaldehyde sensor and a PM2.5 monitor which are arranged at the lower part of the shell of the water heater;
s4, after the detection of S3 is normal, when the water heater works, the combustion state monitoring unit detects whether the gas is combusted, after the combustion is confirmed, the timer will time, and the timer stops timing and resets to zero when the combustion state monitoring unit detects that the gas is not combusted every time;
s5, controlling the opening and closing of a gas output pipeline electromagnetic valve by a gas flow control unit according to gas pressure detected by a gas pressure sensor to control the gas release amount, detecting the flow in a gas pipe by a gas flow detection unit, and when the pressure in the gas pipe detected by the gas pressure sensor is zero, the gas flow control unit does not control the gas output pipeline electromagnetic valve to be opened any more;
s6, the gas combustion amount calculating unit multiplies the flow data in the gas pipe according to the timing of the timer and the flow data detected by the gas flow detecting unit to obtain the result, and the combustion use amount of the gas is obtained;
s7, after the combustion state is detected by the combustion state monitoring unit by the water flow control unit, the water pipe electromagnetic valve is controlled according to the water pressure detected by the water pressure detection sensor to control the water flow, the water flow calculation unit multiplies the data counted by the timer by the water flow controlled by the water flow control unit to obtain the total amount of the output water, when the water pressure detected by the water pressure detection sensor is zero, the water flow control unit does not control the water pipe electromagnetic valve to be opened any more, and meanwhile, the water pressure alarm is used for giving an alarm;
s8, a normal temperature water temperature monitoring sensor can detect the water temperature at the normal temperature in real time, a water temperature monitoring sensor in a storage tank is used for detecting the water temperature data in the storage tank, a gas quantity and water temperature relation comparison unit is used for collating the data measured by the water temperature monitoring sensor in the storage tank, the normal temperature water temperature monitoring sensor, a gas combustion quantity calculation unit and a water quantity calculation unit, calling the data in a relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature for comparison, under the same normal temperature, the gas consumption quantity per unit water quantity is obtained by dividing the combustion usage quantity of the gas calculated in S6 by the total quantity of the output water calculated in S7, and the temperature result obtained by subtracting the data measured by the normal temperature monitoring sensor from the data measured by the water temperature monitoring sensor in the storage tank is used for comparing the data in the temperature of the same temperature gear in the relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature Judging the size;
s9, when the comparison data is smaller than the set value and the error range, the alarm unit gives an alarm and comprises a fan and an air purification device, wherein the air purification device and the fan are both arranged on the outer side of the water heater.
Example two
The present invention provides a method of controlling a gas water heater having a storage tank as shown in fig. 1, comprising the steps of:
s1, after confirming that no flammable and combustible articles exist around the water heater, electrifying the water heater;
s2, after the water heater is powered on, the sensor function self-checking module performs self-checking on all the sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm;
s3, after the sensor self-check is completed and all the parts are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the abnormal condition is found, the alarm unit can give an alarm, the environment temperature sensor can detect the outside temperature, when the temperature is 75 ℃, the alarm unit can give an alarm, the harmful gas detected by the harmful gas detection unit is methane, carbon monoxide, formaldehyde and PM2.5, and the harmful gas detection unit comprises a methane sensor, a carbon monoxide sensor, a formaldehyde sensor and a PM2.5 monitor which are arranged at the lower part of the shell of the water heater;
s4, after the detection of S3 is normal, when the water heater works, the combustion state monitoring unit detects whether the gas is combusted, after the combustion is confirmed, the timer will time, and the timer stops timing and resets to zero when the combustion state monitoring unit detects that the gas is not combusted every time;
s5, controlling the opening and closing of a gas output pipeline electromagnetic valve by a gas flow control unit according to gas pressure detected by a gas pressure sensor to control the gas release amount, detecting the flow in a gas pipe by a gas flow detection unit, and when the pressure in the gas pipe detected by the gas pressure sensor is zero, the gas flow control unit does not control the gas output pipeline electromagnetic valve to be opened any more;
s6, the gas combustion amount calculating unit multiplies the flow data in the gas pipe according to the timing of the timer and the flow data detected by the gas flow detecting unit to obtain the result, and the combustion use amount of the gas is obtained;
s7, after the combustion state is detected by the combustion state monitoring unit by the water flow control unit, the water pipe electromagnetic valve is controlled according to the water pressure detected by the water pressure detection sensor to control the water flow, the water flow calculation unit multiplies the data counted by the timer by the water flow controlled by the water flow control unit to obtain the total amount of the output water, when the water pressure detected by the water pressure detection sensor is zero, the water flow control unit does not control the water pipe electromagnetic valve to be opened any more, and meanwhile, the water pressure alarm is used for giving an alarm;
s8, a normal temperature water temperature monitoring sensor can detect the water temperature at the normal temperature in real time, a water temperature monitoring sensor in a storage tank is used for detecting the water temperature data in the storage tank, a gas quantity and water temperature relation comparison unit is used for collating the data measured by the water temperature monitoring sensor in the storage tank, the normal temperature water temperature monitoring sensor, a gas combustion quantity calculation unit and a water quantity calculation unit, calling the data in a relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature for comparison, under the same normal temperature, the gas consumption quantity per unit water quantity is obtained by dividing the combustion usage quantity of the gas calculated in S6 by the total quantity of the output water calculated in S7, and the temperature result obtained by subtracting the data measured by the normal temperature monitoring sensor from the data measured by the water temperature monitoring sensor in the storage tank is used for comparing the data in the temperature of the same temperature gear in the relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature Judging the size;
s9, when the comparison data is smaller than the set value and the error range, the alarm unit gives an alarm and comprises a fan and an air purification device, wherein the air purification device and the fan are both arranged on the outer side of the water heater.
EXAMPLE III
The present invention provides a method of controlling a gas water heater having a storage tank as shown in fig. 1, comprising the steps of:
s1, after confirming that no flammable and combustible articles exist around the water heater, electrifying the water heater;
s2, after the water heater is powered on, the sensor function self-checking module performs self-checking on all the sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm;
s3, after the sensor self-check is completed and all the parts are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the abnormal condition is found, the alarm unit can give an alarm, the environment temperature sensor can detect the outside temperature, when the temperature is 80 ℃, the alarm unit can give an alarm, the harmful gas detected by the harmful gas detection unit is methane, carbon monoxide, formaldehyde and PM2.5, and the harmful gas detection unit comprises a methane sensor, a carbon monoxide sensor, a formaldehyde sensor and a PM2.5 monitor which are arranged at the lower part of the shell of the water heater;
s4, after the detection of S3 is normal, when the water heater works, the combustion state monitoring unit detects whether the gas is combusted, after the combustion is confirmed, the timer will time, and the timer stops timing and resets to zero when the combustion state monitoring unit detects that the gas is not combusted every time;
s5, controlling the opening and closing of a gas output pipeline electromagnetic valve by a gas flow control unit according to gas pressure detected by a gas pressure sensor to control the gas release amount, detecting the flow in a gas pipe by a gas flow detection unit, and when the pressure in the gas pipe detected by the gas pressure sensor is zero, the gas flow control unit does not control the gas output pipeline electromagnetic valve to be opened any more;
s6, the gas combustion amount calculating unit multiplies the flow data in the gas pipe according to the timing of the timer and the flow data detected by the gas flow detecting unit to obtain the result, and the combustion use amount of the gas is obtained;
s7, after the combustion state is detected by the combustion state monitoring unit by the water flow control unit, the water pipe electromagnetic valve is controlled according to the water pressure detected by the water pressure detection sensor to control the water flow, the water flow calculation unit multiplies the data counted by the timer by the water flow controlled by the water flow control unit to obtain the total amount of the output water, when the water pressure detected by the water pressure detection sensor is zero, the water flow control unit does not control the water pipe electromagnetic valve to be opened any more, and meanwhile, the water pressure alarm is used for giving an alarm;
s8, a normal temperature water temperature monitoring sensor can detect the water temperature at the normal temperature in real time, a water temperature monitoring sensor in a storage tank is used for detecting the water temperature data in the storage tank, a gas quantity and water temperature relation comparison unit is used for collating the data measured by the water temperature monitoring sensor in the storage tank, the normal temperature water temperature monitoring sensor, a gas combustion quantity calculation unit and a water quantity calculation unit, calling the data in a relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature for comparison, under the same normal temperature, the gas consumption quantity per unit water quantity is obtained by dividing the combustion usage quantity of the gas calculated in S6 by the total quantity of the output water calculated in S7, and the temperature result obtained by subtracting the data measured by the normal temperature monitoring sensor from the data measured by the water temperature monitoring sensor in the storage tank is used for comparing the data in the temperature of the same temperature gear in the relation comparison data base of the gas consumption quantity at different normal temperature and the equivalent water temperature Judging the size;
s9, when the comparison data is smaller than the set value and the error range, the alarm unit gives an alarm and comprises a fan and an air purification device, wherein the air purification device and the fan are both arranged on the outer side of the water heater.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (1)
1. A method of controlling a gas water heater having a storage tank, characterized by: the method comprises the following steps:
s1, after confirming that no flammable and combustible articles exist around the water heater, electrifying the water heater;
s2, after the water heater is powered on, the sensor function self-checking module performs self-checking on all the sensors of the water heater, detects whether each sensor is normal or not, and if the sensor is abnormal, the alarm unit gives an alarm;
s3, after the sensor self-check is completed and all the parts are normal, the harmful gas detection unit can detect the harmful gas in the surrounding environment of the water heater, if the abnormal condition is found, the alarm unit can give an alarm, the environment temperature sensor can detect the outside temperature, when the temperature is higher than 70 ℃, the alarm unit can give an alarm, the harmful gas detected by the harmful gas detection unit in S3 is methane, carbon monoxide, formaldehyde and PM2.5, and the harmful gas detection unit comprises a methane sensor, a carbon monoxide sensor, a formaldehyde sensor and a PM2.5 monitor which are arranged at the lower part of the shell of the water heater;
s4, after the detection of S3 is normal, when the water heater works, the combustion state monitoring unit detects whether the gas is combusted, after the combustion is confirmed, the timer will time, and in S4, the timer stops timing and resets to zero when the combustion state monitoring unit detects that the gas is not combusted every time;
s5, controlling the opening and closing of a solenoid valve of a gas output pipeline by a gas flow control unit according to gas pressure detected by a gas pressure sensor to control the gas release amount, detecting the flow in the gas pipeline by a gas flow detection unit, and in S5, when the pressure in the gas output pipeline detected by the gas pressure sensor is zero, the gas flow control unit does not control the opening of the solenoid valve of the gas output pipeline any more;
s6, the gas combustion amount calculating unit multiplies the flow data in the gas pipe according to the timing of the timer and the flow data detected by the gas flow detecting unit to obtain the result, and the combustion use amount of the gas is obtained;
s7, after the combustion state is detected by the combustion state monitoring unit by the water flow control unit, the water pipe electromagnetic valve is controlled according to the water pressure detected by the water pressure detection sensor to control the water flow, the water flow calculation unit multiplies the data counted by the timer by the water flow controlled by the water flow control unit to obtain the total amount of the output water, when the water pressure detected by the water pressure detection sensor is zero in S7, the water flow control unit does not control the water pipe electromagnetic valve to be opened any more, and meanwhile, the water pressure alarm gives an alarm;
s8, a normal temperature water temperature monitoring sensor can detect the water temperature at the normal temperature in real time, a water temperature monitoring sensor in a storage tank detects the water temperature data in the storage tank, a gas quantity and water temperature relation comparison unit arranges the data measured by the water temperature monitoring sensor, the normal temperature water temperature monitoring sensor, a gas combustion quantity calculation unit and a water quantity calculation unit in the storage tank and calls the data in a relation comparison data base between the gas consumption at different normal temperature and the equivalent water temperature for comparison, in S8, the gas consumption at the same normal temperature is calculated in S6 and the total quantity of the output water calculated in S7 is divided into the gas consumption at the unit water consumption, and the gas consumption at the same normal temperature and the equivalent water temperature are compared according to the temperature result obtained by subtracting the data measured by the normal temperature water temperature monitoring sensor from the data measured by the water temperature monitoring sensor in the storage tank Judging the size of the data;
and S9, when the comparison data is smaller than the set value and the error range, an alarm unit gives an alarm, wherein the alarm unit in the S9 comprises a fan and an air purification device, and the air purification device and the fan are both arranged on the outer side of the water heater.
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| CN113504751A (en) * | 2021-06-30 | 2021-10-15 | 东风商用车有限公司 | Container monitoring method, device, equipment and readable storage medium |
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| JPS59212623A (en) * | 1983-05-18 | 1984-12-01 | Riikugaade Eng Kk | Gas water heater |
| US20080003530A1 (en) * | 2006-06-30 | 2008-01-03 | Emerson Electric Co. | Communicating control for fuel fired heating appliance |
| CN104132469B (en) * | 2014-08-14 | 2017-01-11 | 宁波源丰消防设备有限公司 | Gas leakage detection device for gas water heater |
| CN104197204B (en) * | 2014-08-28 | 2017-02-01 | 洛阳佳岭科技有限公司 | Leakage detecting device and method for gas system |
| CN105674576A (en) * | 2016-03-10 | 2016-06-15 | 广东超人节能厨卫电器有限公司 | Control method for realizing quick starting of water heater through gas concentration detection |
| CN108278779A (en) * | 2017-01-05 | 2018-07-13 | 重庆海尔热水器有限公司 | A kind of gas heater monitoring and control method and gas heater |
| CN108447229A (en) * | 2018-06-26 | 2018-08-24 | 宋雁章 | A kind of alarm of Intelligent gas leakage and automatically cut off air source method and device |
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