CN114370703B - Gas water heater, secondary pressure adjusting method and device thereof and storage medium - Google Patents
Gas water heater, secondary pressure adjusting method and device thereof and storage medium Download PDFInfo
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- CN114370703B CN114370703B CN202111512212.4A CN202111512212A CN114370703B CN 114370703 B CN114370703 B CN 114370703B CN 202111512212 A CN202111512212 A CN 202111512212A CN 114370703 B CN114370703 B CN 114370703B
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
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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 application relates to a gas water heater, a secondary pressure adjusting method, an adjusting device and a storage medium thereof. The secondary pressure regulating method of the gas water heater comprises the following steps: responding to the secondary pressure regulation command, and acquiring the water inlet temperature, water inlet flow, overtemperature protection value and maximum load of the gas water heater; determining the minimum water flow according to the water inlet temperature, the overtemperature protection value and the maximum load; and under the condition that the water inflow is larger than the minimum water flow, controlling the gas water heater to enter a secondary pressure regulating mode. By adopting the method, the gas water heater can enter the secondary pressure regulating mode only when the water inflow is larger than the minimum water flow, so that the phenomenon that the water outlet temperature of the gas water heater is higher than the overtemperature protection value of the gas water heater, and the overtemperature protection of the gas water heater is triggered to flameout is avoided, and the production efficiency is improved.
Description
Technical Field
The application relates to the technical field of secondary pressure regulation of gas water heaters, in particular to a gas water heater, a secondary pressure regulation method, a secondary pressure regulation device and a storage medium thereof.
Background
In order to achieve better combustion efficiency, the gas in the gas pipeline needs to be regulated through a proportional valve in the gas water heater, and the pressure regulated through the proportional valve is the secondary pressure of the gas, namely the pressure behind the valve of the proportional valve. The secondary pressure of the gas water heater is an important index for influencing the performance of the gas water heater, and the combustion section of the gas water heater is determined by setting the secondary pressure section of the gas water heater before leaving the factory.
The current secondary pressure adjusting method is to reserve a pressure measuring port on the proportional valve, and connect the micro-pressure device to the pressure measuring port by a hose; the current of the proportional valve is changed by manually adjusting the resistance value of the potentiometer, so that the opening degree of the proportional valve is adjusted to determine the secondary pressure interval of the gas water heater.
However, the adjustment method is easy to cause that the outlet water temperature of the gas water heater is higher than the overheat protection temperature of the gas water heater, so that the water heater is triggered to perform overheat protection to extinguish, and after the overheat protection, the gas water heater can be started to perform secondary pressure adjustment again after the temperature controller of the gas water heater is reset, so that the production efficiency is low.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a gas water heater and a secondary pressure adjustment method, an adjustment device, and a storage medium thereof that can improve production efficiency.
The first technical problem to be solved by the application is to provide a secondary pressure regulating method of a gas water heater, which can improve the production efficiency of the gas water heater.
The second technical problem to be solved by the application is to provide a secondary pressure regulating device of a gas water heater, which can improve the production efficiency of the gas water heater.
The third technical problem to be solved by the application is to provide a gas water heater which has high production efficiency.
A fifth technical problem to be solved by the present application is to provide a computer readable storage medium, which can improve the production efficiency of a gas water heater.
The first technical problem is solved by the following technical scheme:
a secondary pressure regulating method of a gas water heater comprises the following steps: responding to a secondary pressure regulation command, and acquiring the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater; determining the minimum water flow according to the water inlet temperature, the overtemperature protection value and the maximum load; controlling the gas water heater to enter a secondary pressure regulation mode under the condition that the water inflow is larger than the minimum water flow; the secondary pressure adjusting mode is used for calibrating the maximum load secondary pressure of the secondary pressure adjusting mechanism of the gas water heater.
According to the secondary pressure regulating method of the gas water heater, provided by the application, the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater are obtained in response to the secondary pressure regulating command, the minimum water flow is determined according to the water inlet temperature, the overtemperature protection value and the maximum load, and under the condition that the water inlet flow is larger than the minimum water flow, the gas water heater is controlled to enter the secondary pressure regulating mode, namely, the gas water heater enters the secondary pressure regulating mode under the condition that the water inlet flow is larger than the minimum water flow, so that the phenomenon that the water outlet temperature of the gas water heater is higher than the overtemperature protection value of the gas water heater, and the overtemperature protection of the water heater is triggered to flameout is avoided, the production efficiency is improved, and the service life of the water heater is prolonged. Meanwhile, the phenomenon of scalding caused by overhigh temperature of water outlet can be avoided.
In one embodiment, the secondary pressure adjusting method of the gas water heater further comprises: increasing the inlet water flow rate under the condition that the inlet water flow rate is smaller than the minimum water flow rate; and if the number of times of increasing the water inflow is smaller than the preset number of times and the increased water inflow is larger than the minimum water flow, controlling the gas water heater to enter the secondary pressure regulating mode.
According to the embodiment, the water inlet flow is increased, so that the water inlet temperature and the water inlet flow of the gas water heater can ensure that the gas water heater cannot trigger overtemperature protection when working under the maximum load, the production efficiency is improved, and the service life of the gas water heater is prolonged.
In one embodiment, the secondary pressure adjusting method of the gas water heater further comprises: if the number of times of increasing the water inflow reaches the preset number of times and the increased water inflow is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulating mode.
In one embodiment, the secondary pressure adjusting method of the gas water heater further comprises: increasing the inlet water flow rate under the condition that the inlet water flow rate is smaller than the minimum water flow rate; and if the increased water inflow is larger than the minimum water flow, controlling the gas water heater to enter a secondary pressure regulating mode.
In one embodiment, the secondary pressure adjusting method of the gas water heater further comprises: and if the increased water inflow reaches the maximum water flow and is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulation mode.
In one embodiment, the secondary pressure adjusting method of the gas water heater further comprises: acquiring model information of the gas water heater; and determining an overtemperature protection value and a maximum load of the gas water heater according to the model information.
The method comprises the steps of obtaining the model information of the hot gas water heater, determining the overtemperature protection value and the maximum load of the gas water heater according to the model information, and determining the corresponding minimum water flow according to the overtemperature protection value and the maximum load, so that the precision of the minimum water flow can be improved, and the gas water heater is prevented from being erroneously controlled to enter a secondary pressure regulation mode.
In one embodiment, the step of responding to the secondary pressure adjustment command further comprises, prior to: and controlling the water inflow of the gas water heater to be a target water inflow according to the model information, wherein the target water inflow is larger than or equal to the starting water flow of the gas water heater.
The second technical problem is solved by the following technical scheme:
a secondary pressure regulating device of a gas water heater, comprising: the acquisition module is used for responding to the secondary pressure regulation command and acquiring the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater; the determining module is used for determining the minimum water flow according to the water inlet temperature, the overtemperature protection value and the maximum load; the control module is used for controlling the gas water heater to enter a secondary pressure regulation mode under the condition that the water inflow is larger than the minimum water flow; the secondary pressure adjusting mode is used for calibrating the maximum load secondary pressure of the secondary pressure adjusting mechanism of the gas water heater.
The third technical problem is solved by the following technical scheme:
the gas water heater comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the secondary pressure regulating method when executing the computer program.
The fourth technical problem is solved by the following technical scheme:
a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the secondary pressure regulation method described above.
According to the secondary pressure regulating method of the gas water heater, the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater are obtained in response to the secondary pressure regulating command, the minimum water flow is determined according to the water inlet temperature, the overtemperature protection value and the maximum load, and the gas water heater is controlled to enter the secondary pressure regulating mode under the condition that the water inlet flow is larger than the minimum water flow, so that the phenomenon that the water outlet temperature of the gas water heater is higher than the overtemperature protection value of the gas water heater, and the overtemperature protection of the water heater is triggered to flameout is avoided, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for regulating secondary pressure of a gas water heater in a first embodiment;
FIG. 2 is a schematic flow chart of a secondary pressure regulating method of a gas water heater in a second embodiment;
FIG. 3 is a schematic flow chart of a method for regulating the secondary pressure of the gas water heater in the third embodiment;
FIG. 4 is a flow chart of a method for adjusting the secondary pressure of the gas water heater according to the fourth embodiment;
FIG. 5 is a flow chart of a method for adjusting the secondary pressure of the gas water heater according to the fifth embodiment;
FIG. 6 is a flow chart of a method for adjusting the secondary pressure of the gas water heater according to the sixth embodiment;
FIG. 7 is a block diagram of a secondary pressure regulator of a gas water heater according to one embodiment;
FIG. 8 is a schematic diagram of a gas water heater according to an embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The gas water heater is a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.
Because each part of the gas water heater has deviation, the secondary pressure deviates from the standard value, in order to ensure that the water heater can reach the designed rated load, the accuracy of the secondary pressure is generally ensured by adjusting the maximum load secondary pressure and the minimum load secondary pressure.
The current secondary pressure regulating mode generally does not consider whether the current water inlet temperature and water flow can meet the secondary pressure regulation, and the current secondary pressure regulating mode is forced to enter and regulate the maximum load secondary pressure and the minimum load secondary pressure. If the gas water heater enters the maximum load secondary pressure regulation mechanism, the gas water heater controls the secondary pressure regulation mechanism according to the maximum preset parameter, and a regulator controls the secondary pressure regulation mechanism according to the detection pressure of the pressure sensor and the target maximum load secondary pressure until the detection pressure of the pressure sensor is consistent with the target maximum load secondary pressure, and at the moment, the calibration of the maximum load secondary pressure is completed. When the gas proportional valve receives the current with the current value, if the water heater can reach the designed rated load (without calibration), the detection pressure of the pressure sensor is equal to the target maximum load secondary pressure, if the water heater can not reach the designed rated load due to component deviation, the detection pressure of the pressure sensor is larger than or smaller than the target maximum load secondary pressure, and the regulator controls the gas water heater to control the current value provided by the gas proportional valve by controlling the gas water heater, so that the detection pressure of the pressure sensor is equal to the target maximum load secondary pressure, and the secondary pressure of the gas water heater is calibrated. The pressure sensor is arranged at a secondary pressure measuring port of the gas water heater so as to detect the secondary pressure of the gas water heater.
In order to save cost, the circulating water is generally used in the production of the existing workshops, the water temperature is higher, the secondary pressure adjustment is simultaneously carried out on the multiple water heaters, and the rising number of the water heaters is larger and larger along with market demands, so that the gas water heater can be caused to have high water inlet temperature or insufficient water flow, and the phenomenon that the water outlet temperature is higher than the overheat protection temperature of the gas water heater and the water heater is in flameout due to overheat protection when the gas water heater enters a maximum load secondary pressure adjustment mode or in the adjustment process can occur. The service life of parts of the gas water heater can be influenced due to the fact that the water outlet temperature of the gas water heater is too high, meanwhile, after overtemperature protection, the temperature controller needs to be reset, the gas water heater can be started to enter a secondary pressure regulating mode again to regulate secondary pressure, and therefore production efficiency is low.
Therefore, the embodiment of the application provides a secondary pressure regulating method of a gas water heater, which avoids the phenomenon that the water outlet temperature of the gas water heater is higher than the overheat protection temperature of the gas water heater, and the overtemperature protection of the gas water heater is triggered to flameout, prolongs the service life of the gas water heater and improves the production efficiency.
Referring to fig. 1, a method for adjusting secondary pressure of a gas water heater according to a first embodiment of the present application is shown. As shown in fig. 1, the secondary pressure adjusting method of the gas water heater may include steps S102 to S106.
S102, responding to the secondary pressure regulating command, and acquiring the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater.
It should be noted that the secondary pressure adjustment command is used to indicate that the secondary pressure adjustment mode needs to be entered. The secondary pressure regulating mode is used for calibrating the maximum load secondary pressure of the secondary pressure regulating mechanism of the gas water heater. Optionally, the secondary pressure adjustment mode is further used for calibrating the minimum load secondary pressure of the secondary pressure adjustment mechanism of the gas water heater. Optionally, the gas water heater is provided with a key and/or a touch screen, and the secondary pressure adjusting command is received through the key and/or the touch screen.
In one embodiment, the step prior to responding to the secondary pressure adjustment command may further comprise: and controlling the gas water heater to work under the target load so as to output hot water with the temperature being the set temperature. The target load can be determined according to the set temperature, the water inlet temperature and the water inlet flow of the gas water heater.
S104, determining the minimum water flow according to the water inlet temperature, the over-temperature protection value and the maximum load.
It should be noted that, when the gas water heater is at the current water inlet temperature and works under the maximum load, the water inlet flow needs to be larger than the minimum water flow, and the water outlet temperature of the gas water heater is smaller than the over-temperature protection value.
In one embodiment, the minimum water flow rate L may be obtained according to the following formula,
wherein Q is the maximum load, T 0 Is an overtemperature protection value, a is a deviation temperature, T 1 Is the temperature of water inlet. It should be noted that a is used for eliminating the deviation between the parts of the gas water heater, and can be set according to actual needs. Alternatively, the offset temperature may be 5 ℃.
S106, controlling the gas water heater to enter a secondary pressure regulation mode under the condition that the water inflow is larger than the minimum water flow.
Under the condition that the inflow water flow is larger than the minimum water flow, when the secondary pressure of the gas water heater is equal to the secondary pressure corresponding to the maximum load of the gas water heater, the outflow water temperature of the gas water heater is still smaller than the overtemperature protection value, under the condition, the maximum load secondary pressure of the gas water heater is calibrated, namely the gas water heater works under the maximum load, the outflow water temperature of the gas water heater is also smaller than the overtemperature protection value, and the overtemperature protection of the gas water heater is prevented from being triggered.
In one embodiment, the secondary pressure adjustment mechanism may be a gas proportional valve. The step of controlling the gas water heater to enter the secondary pressure regulation mode may include: and controlling the opening of the fuel gas proportional valve to be the target maximum opening. And adjusting the opening degree of the fuel gas proportional valve by an adjusting person according to the detection pressure of the pressure sensor so as to enable the detection pressure of the pressure sensor to be consistent with the target maximum load secondary pressure, thereby completing the adjustment of the maximum load secondary pressure. Alternatively, the adjuster may be a factory debugger, after-market or maintenance person. In one embodiment, after the adjustment of the maximum load secondary pressure is completed, the opening degree of the gas proportional valve is controlled to be the target minimum opening degree in response to the maximum load determination command. And adjusting the opening degree of the fuel gas proportional valve by an adjusting person according to the detection pressure of the pressure sensor so as to enable the detection pressure of the pressure sensor to be consistent with the target minimum load secondary pressure, thereby completing the adjustment of the minimum load secondary pressure. In one embodiment, in the case that the inflow rate is greater than the minimum inflow rate, the step of controlling the gas water heater to enter the secondary pressure adjustment mode may further include the steps of: and controlling the gas water heater to exit the secondary pressure regulating mode in response to the exiting secondary pressure regulating command. It can be understood that after the secondary pressure adjustment is completed, an adjuster can input and withdraw the secondary pressure adjustment command to the gas water heater through a key or a touch screen arranged on the gas water heater.
In one embodiment, the target maximum opening is smaller than the opening of the gas proportional valve corresponding to the maximum load of the gas water heater, so that overtemperature protection of the gas water heater is prevented from being triggered due to component deviation when secondary pressure adjustment of the maximum load is carried out, namely, the pressure required by the maximum load is prevented from being exceeded secondarily corresponding to the target maximum opening. According to the embodiment, the target maximum opening is set to be smaller than the opening of the gas proportional valve corresponding to the maximum load of the gas water heater, so that the triggering probability of over-temperature protection of the gas water heater can be reduced. Optionally, the current output to the gas proportional valve is controlled to be a set current so that the opening degree of the gas proportional valve is a target maximum opening degree. The current is smaller than the current of the fuel gas proportional valve corresponding to the secondary pressure required by the fuel gas water heater when the fuel gas water heater is at the maximum load.
According to the secondary pressure regulating method of the gas water heater, provided by the embodiment, the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater are obtained in response to the secondary pressure regulating command, the minimum water flow is determined according to the water inlet temperature, the overtemperature protection value and the maximum load, and under the condition that the water inlet flow is larger than the minimum water flow, the gas water heater is controlled to enter the secondary pressure regulating mode, namely, the gas water heater enters the secondary pressure regulating mode under the condition that the water inlet flow is larger than the minimum water flow, so that the phenomenon that the water outlet temperature of the gas water heater is higher than the overtemperature protection value of the gas water heater, and the overtemperature protection of the water heater is triggered to flameout is avoided, the production efficiency is improved, and the service life of the water heater is prolonged. Meanwhile, the phenomenon of scalding caused by overhigh temperature of water outlet can be avoided.
Referring to fig. 2, a method for adjusting secondary pressure of a gas water heater according to a second embodiment of the present application is shown. As shown in fig. 2, the method for adjusting the secondary pressure of the gas water heater according to the first embodiment may further include steps S202 to S204.
S202, increasing the water inflow under the condition that the water inflow is smaller than the minimum water inflow.
S204, if the number of times of increasing the water inflow is smaller than the preset number of times and the increased water inflow is larger than the minimum water flow, controlling the gas water heater to enter a secondary pressure regulating mode.
It should be noted that, when the water inflow is smaller than the minimum water inflow, if the secondary pressure of the gas water heater is equal to the secondary pressure corresponding to the maximum load of the gas water heater, the water outlet temperature of the gas water heater will be higher by Yu Chaowen protection value. The preset number of times may be set according to actual situations, which is not limited in the embodiment of the present application.
In one embodiment, if the number of increases in the increased water inflow is less than the preset number and the increased water inflow is still less than the minimum water inflow, a warning signal is output to prompt a regulator to increase the water inflow of the gas water heater. Optionally, the gas water heater may further comprise an alarm device, which may comprise a buzzer and/or a warning light. The alarm device is used for sending out sound and/or light to prompt the adjuster to increase the water inflow of the gas water heater when receiving the warning signal
According to the embodiment, the water inlet flow is increased, so that the water inlet temperature and the water inlet flow of the gas water heater can ensure that the gas water heater cannot trigger overtemperature protection when working under the maximum load, the production efficiency is improved, and the service life of the gas water heater is prolonged.
In one embodiment, the secondary pressure adjusting method of the gas water heater may further include: if the number of times of increasing the water inflow reaches the preset number of times and the water inflow is still smaller than the minimum water flow after the water inflow is increased, the gas water heater does not enter the secondary pressure regulating mode. It should be noted that if the number of times of increasing the inflow water flow reaches the preset number of times and the inflow water flow is still smaller than the minimum water flow after the increase, it is indicated that the current inflow water flow and the inflow water temperature cannot meet the requirement of entering the secondary pressure regulation mode, that is, the gas water heater is possibly triggered to be protected against over-temperature by forcedly entering the secondary pressure regulation mode.
In one embodiment, in response to the flow adjustment confirmation command, determining whether the number of increases in the increased intake water flow is less than or equal to a preset number, and if so, outputting a warning signal; if not, the gas water heater does not enter the secondary pressure regulating mode. In one embodiment, if the number of increases in the water inlet flow is greater than a preset number, the gas water heater is controlled to be shut down. The flow regulation confirmation command is used for indicating a regulator to complete one-time water inlet flow increasing operation.
Referring to fig. 3, in an embodiment, the method for adjusting the secondary pressure of the gas water heater provided in the foregoing embodiment may further include:
s302, judging whether the water inlet flow is larger than the minimum water inlet flow.
S304, if the water inflow is larger than the minimum water inflow, controlling the gas water heater to enter a secondary pressure regulating mode.
S306, if the water inflow is smaller than the minimum water inflow, judging whether the number of times of increasing the water inflow is larger than the preset number of times.
And S308, if the number of times of increase is less than or equal to the preset number of times, controlling the alarm device to remind the regulator to increase the water inflow, and responding to the flow regulation confirmation command, returning to the step S302.
S310, if the number of times of increase is greater than the preset number of times, the gas water heater does not enter the secondary pressure regulation mode.
Referring to fig. 4, a method for adjusting secondary pressure of a gas water heater according to a fourth embodiment of the present application is shown. It should be noted that the gas water heater includes a water inflow adjusting device for adjusting the water inflow of the gas water heater. Optionally, the water inlet flow regulator may be set in the water inlet pipe of the gas water heater, and the gas water heater may be water proportional valve. As shown in fig. 4, the method for adjusting the secondary pressure of the gas water heater according to the first embodiment may further include steps S402 to S404.
S402, increasing the inflow under the condition that the inflow is smaller than the minimum water flow.
S404, if the increased water inflow is larger than the minimum water flow, controlling the gas water heater to enter a secondary pressure regulating mode.
Optionally, in the case that the inflow is smaller than the minimum water flow, the step of increasing the inflow may include: and under the condition that the water inflow is smaller than the minimum water flow, controlling the water inflow regulating device to increase the water inflow. In one embodiment, the gas water heater does not enter the secondary pressure regulation mode if the increased inlet water flow reaches a maximum water flow and is still less than a minimum water flow. It should be noted that the maximum water flow is the maximum water flow of the water inlet pipe of the gas water heater under the action of the water inlet flow regulating device. If the water inlet flow regulator is a water proportional valve, the water inlet flow of the water inlet pipe is the maximum water inlet flow when the opening of the water proportional valve is the maximum opening. If the increased water inflow reaches the maximum water flow and is still smaller than the minimum water flow, the water inflow cannot meet the requirement by adjusting the water inflow adjusting device, so that the gas water heater does not enter a secondary pressure adjusting mode, and the water outlet temperature of the gas water heater is prevented from being high by Yu Chaowen protection value. In one embodiment, if the increased inflow water flow reaches the maximum water flow and is still smaller than the minimum water flow, the gas water heater is controlled to be shut down.
Referring to fig. 5, a method for adjusting secondary pressure of a gas water heater according to a fifth embodiment of the application is shown. As shown in fig. 5, the secondary pressure adjustment method of the gas water heater provided by the fourth embodiment may include steps S502 to S510.
S502, judging whether the water inlet flow is larger than the minimum water inlet flow.
S504, if the water inflow is larger than the minimum water inflow, controlling the gas water heater to enter a secondary pressure regulating mode.
S506, if the water inflow is smaller than the minimum water inflow, judging whether the water inflow is the maximum water inflow.
S508, if the inflow is smaller than the maximum inflow, controlling the inflow regulator to increase the inflow, and returning to step S502.
S510, if the water inflow is equal to the maximum water inflow, the gas water heater does not enter the secondary pressure regulation mode.
Referring to fig. 6, a method for adjusting secondary pressure of a gas water heater according to a sixth embodiment of the present application is shown in fig. 6, and the method for adjusting secondary pressure of a gas water heater according to the above embodiment may further include steps S602 to S604.
S602, acquiring model information of the gas water heater.
S604, determining an overtemperature protection value and a maximum load of the gas water heater according to the model information.
It should be noted that the model information of the gas water heater may include an installation position, an exhaust mode, an ascending number, and a gas type of the gas water heater. The operation of the gas water heater is affected by the installation position, the exhaust mode, the lifting number and the gas species. Therefore, when the model information of the gas water heater is different, the overtemperature protection value and the maximum load of the gas water heater are possibly different, the overtemperature protection value and the maximum load of the gas water heater are determined according to the model information by acquiring the model information of the gas water heater, and the corresponding minimum water flow is determined according to the overtemperature protection value and the maximum load, so that the precision of the minimum water flow can be improved, and the gas water heater is prevented from being erroneously controlled to enter a secondary pressure regulation mode.
Under the condition that the gas water heater is in a shutdown state, the lifting number, the gas type, the installation position and the exhaust mode of the gas water heater are adjusted. In one embodiment, the step of determining the overtemperature protection value and the maximum load of the gas water heater according to the model information may include: and inquiring the overtemperature protection value and the maximum load corresponding to the model information according to the model information and the overtemperature protection value maximum load comparison table. It should be noted that, the over-temperature protection value maximum load comparison table correspondingly stores model information, over-temperature protection values and maximum loads, that is, the corresponding over-temperature protection time and maximum loads can be queried according to the model information. In one embodiment, the over-temperature protection value is obtained by the following formula:
Q＝L*25K*b
wherein L is the amount of hot water flowing out per minute when the temperature rise of the gas water heater is converted to 25K under the condition of maximum load, and b is the amplification factor. It should be noted that b is used for improving the precision, when Q is calculated by adopting the above formula, the corresponding minimum water flow is calculated by Q, and the corresponding minimum water flow should be converted. In one embodiment, b is equal to 10.
In one embodiment, the step of responding to the secondary pressure adjustment command may further include the step of: and controlling the water inflow of the gas water heater to be the target water inflow according to the model information. The target water inflow is larger than or equal to the starting water flow of the gas water heater. In one embodiment, the target inlet water flow is a start-up water flow of the gas water heater. The gas water heater sets the water inflow as the starting water flow, so that the gas water heater can operate with smaller load, and gas is saved. And the workshop can support secondary pressure adjustment of more gas water heaters under the same condition.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a secondary pressure regulating device of the gas water heater for realizing the secondary pressure regulating method of the gas water heater. The implementation scheme of the device for solving the problems is similar to that described in the above method, so the specific limitation in the embodiments of the secondary pressure adjusting device for one or more gas water heaters provided below can be referred to the limitation of the secondary pressure adjusting method for the gas water heater hereinabove, and will not be repeated here.
In one embodiment, as shown in fig. 7, there is provided a secondary pressure regulating device 700 of a gas water heater, comprising: an acquisition module 702, a determination module 704, and a control module 706. The acquiring module 702 is configured to acquire a water inlet temperature, a water inlet flow, an overtemperature protection value and a maximum load of the gas water heater in response to the secondary pressure adjustment command. The determination module 704 is configured to determine a minimum water flow rate based on the inlet water temperature, the over-temperature protection value, and the maximum load. The control module 706 is configured to control the gas water heater to enter the secondary pressure adjustment mode when the inflow is greater than the minimum water flow. The secondary pressure adjusting mode is used for calibrating the maximum load secondary pressure of the secondary pressure adjusting mechanism of the gas water heater.
In one embodiment, the secondary pressure regulating device of the gas water heater may further comprise an augmentation module and a first entry module. The increasing module is used for increasing the water inflow under the condition that the water inflow is smaller than the minimum water flow. The first entering module is used for controlling the gas water heater to enter a secondary pressure regulating mode if the increasing times of increasing the water inlet flow rate are smaller than the preset times and the increased water inlet flow rate is larger than the minimum water flow rate.
In one embodiment, the secondary pressure regulating device of the gas water heater may further comprise a second inlet module. And the second entering module is used for controlling the gas water heater to enter a secondary pressure regulating mode if the increased water inflow is larger than the minimum water flow.
In one embodiment, the secondary pressure adjusting device of the gas water heater may further include a model information acquisition module and a first determination module. The model information acquisition module is used for acquiring the model information of the gas water heater. The first determining module is used for determining an overtemperature protection value and a maximum load of the gas water heater according to the model information.
In one embodiment, the secondary pressure regulating device of the gas water heater may further include a first control module. The first control module is used for controlling the water inflow of the gas water heater to be the target water inflow according to the model information. The target water inflow is larger than or equal to the starting water flow of the gas water heater.
The modules in the secondary pressure regulating device of the gas water heater can be all or partially realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, as shown in fig. 8, there is provided a gas water heater including a memory and a processor, the memory storing a computer program, the processor implementing the steps of the secondary pressure regulation method embodiments described above when executing the computer program.
In one embodiment, the gas water heater may further include a water inlet pipe 802, a water outlet pipe 804, and a heating device (not shown). The water inlet pipe is used for receiving cold water, the water outlet pipe is used for outputting hot water, and the heating device is used for heating the cold water received by the water inlet pipe.
In one embodiment, the gas water heater may further comprise a water inlet temperature detection device and a water inlet flow detection device. The processor is connected with the water inlet temperature detection device and the water inlet flow detection device to acquire the water inlet temperature and the water inlet flow of the gas water heater. The water inlet temperature detection device is used for detecting the water inlet temperature of the gas water heater, and the water inlet flow detection device is used for detecting the water inlet flow of the gas water heater. Alternatively, the inlet water temperature detecting device may be a temperature probe. Alternatively, the inlet water flow rate detection device may be a water flow rate sensor. Optionally, the water inlet temperature detecting device and the water inlet flow detecting device are arranged on a water inlet pipe of the gas water heater.
In one embodiment, the gas water heater may further comprise a water inlet flow regulating device connected to the processor for controlling the water inlet flow of the gas water heater under the control of the processor.
In one embodiment, the gas water heater may further comprise a water outlet temperature detection device, and the water outlet temperature detection device is connected with the processor. The water outlet temperature detection device is used for obtaining the water outlet temperature of the gas water heater. Optionally, the outlet water temperature detecting device is arranged on an outlet pipe of the gas water heater. Alternatively, the outlet water temperature detecting device may be a temperature probe.
In one embodiment, the gas water heater may further comprise a touch display device connected to the processor for displaying real-time parameters of the gas water heater. Real-time parameters include, but are not limited to, outlet water temperature, inlet water temperature, and inlet water flow of the gas water heater. Optionally, the touch display device may be further configured to receive a secondary pressure adjustment command and send the secondary pressure adjustment command to the processor.
In one embodiment, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the secondary pressure regulation method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (6)
1. The secondary pressure regulating method for the gas water heater is characterized by comprising the following steps of:
responding to a secondary pressure regulation command, and acquiring the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater;
determining minimum water flow according to the water inflow required by the gas water heater working at the maximum load at the water inflow temperature and the water outflow temperature being equal to the overtemperature protection value;
controlling the gas water heater to enter a secondary pressure regulation mode under the condition that the water inflow is larger than the minimum water flow; the secondary pressure adjusting mode is used for calibrating the maximum load secondary pressure of the secondary pressure adjusting mechanism of the gas water heater;
increasing the inlet water flow rate under the condition that the inlet water flow rate is smaller than the minimum water flow rate;
if the number of times of increasing the water inflow is smaller than the preset number of times and the increased water inflow is larger than the minimum water flow, controlling the gas water heater to enter the secondary pressure regulating mode; and/or the number of the groups of groups,
if the number of times of increasing the water inflow reaches the preset number of times and the increased water inflow is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulating mode; and/or if the increased water inflow is greater than the minimum water flow, controlling the gas water heater to enter a secondary pressure regulation mode; and/or if the increased water inflow reaches the maximum water flow and is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulation mode.
2. The method for secondary pressure regulation of a gas water heater of claim 1, further comprising:
acquiring model information of the gas water heater;
and determining an overtemperature protection value and a maximum load of the gas water heater according to the model information.
3. The secondary pressure regulating method of a gas water heater as recited in claim 2, wherein the step of responding to the secondary pressure regulating command further comprises, prior to:
and controlling the water inflow of the gas water heater to be a target water inflow according to the model information, wherein the target water inflow is larger than or equal to the starting water flow of the gas water heater.
4. A secondary pressure regulating device for a gas water heater, comprising:
the acquisition module is used for responding to the secondary pressure regulation command and acquiring the water inlet temperature, the water inlet flow, the overtemperature protection value and the maximum load of the gas water heater;
the determining module is used for determining the minimum water flow according to the water inflow required by the gas water heater working at the maximum load under the water inflow temperature and the water outflow temperature being equal to the overtemperature protection value;
the control module is used for controlling the gas water heater to enter a secondary pressure regulation mode under the condition that the water inflow is larger than the minimum water flow; the secondary pressure adjusting mode is used for calibrating the maximum load secondary pressure of the secondary pressure adjusting mechanism of the gas water heater;
the control module includes: increasing the module; and a first access module, and/or a second access module;
the increasing module is used for increasing the water inflow under the condition that the water inflow is smaller than the minimum water flow;
the first entering module is used for controlling the gas water heater to enter the secondary pressure regulating mode under the condition that the increasing times of increasing the water inlet flow rate are smaller than preset times and the increased water inlet flow rate is larger than the minimum water flow rate;
the second inlet module is used for controlling the gas water heater to enter a secondary pressure regulating mode under the condition that the increased water inflow is larger than the minimum water flow;
under the condition that the number of times of increasing the water inflow reaches the preset number of times and the increased water inflow is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulating mode; and/or, under the condition that the increased water inflow reaches the maximum water flow and is still smaller than the minimum water flow, the gas water heater does not enter a secondary pressure regulation mode.
5. A gas water heater comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the secondary pressure regulation method of any one of claims 1 to 3.
6. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the secondary pressure regulating method of any one of claims 1 to 3.
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