CN115200226B - Preheating control method and device for gas heating equipment and gas heating equipment - Google Patents
Preheating control method and device for gas heating equipment and gas heating equipment Download PDFInfo
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- CN115200226B CN115200226B CN202211032130.4A CN202211032130A CN115200226B CN 115200226 B CN115200226 B CN 115200226B CN 202211032130 A CN202211032130 A CN 202211032130A CN 115200226 B CN115200226 B CN 115200226B
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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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- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/176—Improving or maintaining comfort of users
- F24H15/18—Preventing sudden or unintentional change of fluid temperature
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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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/215—Temperature of the water before heating
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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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/238—Flow rate
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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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/36—Control of heat-generating means in heaters of burners
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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
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
- F24H15/429—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting operation modes
Abstract
The application provides a preheating control method and device of gas heating equipment and the gas heating equipment, wherein the method comprises the following steps: detecting a first current circulating water flow rate and a first current water inlet temperature of a water pump in the equipment in real time; judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion; in the preheating combustion process, detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time; judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion. The application can avoid the condition of high temperature water and improve the zero cold water consumption experience of users.
Description
Technical Field
The application relates to the technical field of gas heating, in particular to a preheating control method and device of gas heating equipment and the gas heating equipment.
Background
The zero cold water technology is widely applied to the gas water heater, the working principle is that cold water in a pipeline is circulated to the gas water heater for preheating, a water return pipe is needed or the cold water pipe is used as the water return pipeline, when a user starts the circulating preheating by using the water heater, cold water in a water path pipe is loaded by the user to be heated into hot water, and the purpose that water is hot water is obtained.
At present, a gas water heater on the market is carried with a preheating circulation system, hot water is not needed to wait, a cold bath is not needed to be smoothly shared, a preheating circulation function is only needed to be started, a built-in circulating water pump is used for realizing automatic cruising of the hot water, the water in a pipeline is ensured to be hot at the moment, and a user can smoothly share comfortable warm flow by opening a water tap. The reserved heating mode of the zero cold water heater in the current market is as follows: judging whether to start preheating combustion according to the water inlet temperature and the set temperature value, if the water inlet temperature is smaller than the set temperature, starting the preheating combustion, and if the water inlet temperature is larger than the set temperature, stopping the combustion. The simple judgment mode can cause the phenomenon of high temperature water in the hot water pipe, and the bathroom effect is poor.
Disclosure of Invention
The application aims to provide a preheating control method and device for gas heating equipment and the gas heating equipment, which can avoid the condition of high-temperature water and improve the zero cold water consumption experience of users.
In a first aspect, an embodiment of the present application provides a method for controlling preheating of a gas heating apparatus, including: detecting a first current circulating water flow rate and a first current water inlet temperature of a water pump in the equipment in real time; judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion; in the preheating combustion process, detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time; judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion.
In a preferred embodiment of the present application, the step of determining whether the preheating combustion start condition of the cyclic preheating mode is reached according to the first current circulating water flow rate, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature includes: judging whether the first current circulating water flow reaches a first flow threshold value or not; if so, judging whether the difference between the preset preheating temperature and the first current water inlet temperature is larger than a first preset return difference temperature; if so, a warm-up combustion start condition for reaching the cyclic warm-up mode is determined.
In a preferred embodiment of the present application, the step of determining whether the preheating combustion stopping condition is reached according to the second current circulating water flow rate, the current water outlet temperature, the second current water inlet temperature, the preset preheating temperature and the preset return difference temperature includes: determining a target flow interval in which the second current circulating water flow is located; the target flow interval comprises: a first flow interval greater than the first flow threshold and less than or equal to the second flow threshold, a second flow interval greater than the second flow threshold and less than or equal to the third flow threshold; if the target flow interval is the first flow interval, judging whether the difference value between the current water outlet temperature and the preset preheating temperature is equal to a second preset return difference temperature or not; if yes, determining that a preheating combustion stop condition is reached; if the target flow interval is the second flow interval, judging whether the difference between the preset preheating temperature and the second current water inlet temperature is equal to the first preset return difference temperature; if so, it is determined that the warm-up combustion stop condition is reached.
In a preferred embodiment of the present application, the target flow interval further includes: a third flow interval greater than the third flow threshold; the method further comprises the steps of: if the target flow interval is a third flow interval, controlling the water pump to switch from the circulating preheating mode to the domestic water mode; and after the domestic water mode is closed for a first designated time period, controlling the water pump to automatically reenter the circulating preheating mode.
In a preferred embodiment of the present application, before the step of detecting the first current circulating water flow rate and the first current inlet water temperature of the water pump in the water heater in real time, the method further includes: detecting whether the current time enters a preset time period set by a user; if yes, continuing to execute the step of detecting the first current circulating water flow rate and the first current water inlet temperature of the water pump in the water heater in real time.
In a preferred embodiment of the present application, after the step of controlling to stop the preheating combustion, the method further includes: and controlling the water pump to stop running after running for a second designated time so as to make the water temperature in the water pump more uniform and enter a heat preservation state.
In a preferred embodiment of the present application, the preset preheating temperature is a first temperature value within a first preset temperature range set by a user; the first preset return difference temperature is a second temperature value in a second preset temperature range set by a user.
In a second aspect, an embodiment of the present application further provides a preheating control device for a gas heating apparatus, where the device includes: the first detection module is used for detecting the first current circulating water flow and the first current water inlet temperature of the water pump in the equipment in real time; the preheating starting module is used for judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion; the second detection module is used for detecting the second current circulating water flow rate, the current water outlet temperature and the second current water inlet temperature of the water pump in real time in the preheating combustion process; the preheating stopping module is used for judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion.
In a third aspect, the embodiment of the application also provides a gas heating device, which comprises a shell, a water pump arranged in the shell, a gas device and a controller; the controller is configured to perform the method as described in the first aspect.
In a preferred embodiment of the present application, the gas heating device includes a gas zero water heater or a gas heating water heater.
In the preheating control method and device for the gas heating equipment and the gas heating equipment provided by the embodiment of the application, first, the first current circulating water flow and the first current water inlet temperature of a water pump in the equipment are detected in real time; judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion; in the preheating combustion process, detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time; judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion. According to the embodiment of the application, the judgment of whether to start preheating combustion and whether to stop preheating combustion is performed according to various parameters of the current circulating water flow rate, the current water inlet temperature, the current water outlet temperature, the preset preheating temperature and the preset return difference temperature of the water pump, so that the condition of high temperature can be avoided, and the zero cold water consumption experience of a user can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a preheating control method of a gas heating device according to an embodiment of the present application;
FIG. 2 is a control flow chart for starting preheating combustion in a preheating control method of a gas heating device according to an embodiment of the present application;
FIG. 3 is a control flow chart for stopping preheating combustion in a preheating control method of a gas heating device according to an embodiment of the present application;
FIG. 4 is a block diagram of a preheating control device for a gas heating apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a gas heating apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The reserved heating mode of the zero cold water heater in the current market is as follows: judging whether to start preheating combustion according to the water inlet temperature and the set temperature value, if the water inlet temperature is smaller than the set temperature, starting the preheating combustion, and if the water inlet temperature is larger than the set temperature, stopping the combustion. The simple judgment mode can cause the phenomenon of high temperature water in the hot water pipe, and the bathroom effect is poor.
Based on the above, the embodiment of the application provides a preheating control method and device for gas heating equipment and the gas heating equipment, which are used for judging whether to start preheating combustion and whether to stop preheating combustion according to various parameters of the current circulating water flow rate, the current water inlet temperature, the current water outlet temperature, the preset preheating temperature and the preset return difference temperature of a water pump, so that the condition of high-temperature water can be avoided, and the zero cold water consumption experience of a user is improved. For the convenience of understanding the present embodiment, a method for controlling preheating of a gas heating apparatus according to an embodiment of the present application will be described in detail.
Fig. 1 is a flowchart of a preheating control method for a gas heating device, which specifically includes the following steps:
step S102, detecting a first current circulating water flow rate and a first current water inlet temperature of a water pump in equipment in real time; the triggering condition of the circulating heating in the gas heating equipment is the current circulating water flow in the water pump, and when the current circulating water flow reaches a certain value, the circulating preheating mode can be started. The first current circulating water flow and the first current water inlet temperature are acquired by a flow sensor and a temperature sensor which are arranged in the water pump.
Step S104, judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion;
when the first current circulating water flow reaches a certain value, a circulating preheating mode is started, and whether preheating combustion is to be performed can be judged by further judging whether the difference between the first current water inlet temperature and the preset preheating temperature is larger than the preset return difference temperature.
The preset preheating temperature and the preset return difference temperature can be temperature values automatically preset by the system, or can be temperature values which are set by a user in advance according to actual needs.
Step S106, detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time in the preheating combustion process;
when judging whether to stop preheating combustion, in order to avoid high-temperature water, the water flow is judged by the current water outlet temperature under the condition of smaller water flow, so three data are needed to be detected, namely, the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature.
Step S108, judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion.
Here, according to different intervals where the second current circulating water flow is located, different judging modes can be adopted to determine whether to stop preheating combustion.
In the preheating control method of the gas heating equipment provided by the embodiment of the application, first, the first current circulating water flow and the first current water inlet temperature of a water pump in the equipment are detected in real time; judging whether a preheating combustion starting condition of a circulating preheating mode is reached or not according to the first current circulating water flow, the first current water inlet temperature, the preset preheating temperature and the preset return difference temperature; if yes, controlling to start preheating combustion; in the preheating combustion process, detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time; judging whether a preheating combustion stopping condition is reached or not according to a plurality of items of second current circulating water flow, current water outlet temperature, second current water inlet temperature, preset preheating temperature and preset return difference temperature; if so, control stops the pre-heat combustion. According to the embodiment of the application, the judgment of whether to start preheating combustion and whether to stop preheating combustion is performed according to various parameters of the current circulating water flow rate, the current water inlet temperature, the current water outlet temperature, the preset preheating temperature and the preset return difference temperature of the water pump, so that the condition of high temperature can be avoided, and the zero cold water consumption experience of a user can be improved.
The embodiment of the application also provides another preheating control method of the gas heating equipment, which is realized on the basis of the embodiment; the present embodiment focuses on the determination process of starting or stopping the warm-up combustion, and the mode switching process.
Referring to fig. 2, the flow of starting preheating combustion in the preheating control method of the gas heating apparatus includes the following steps:
step S201, detecting whether the current time enters a preset time period set by a user; for example, the preset time period set by the user is 7 to 9 pm, when the current time is detected to be 6 pm, it is determined that the current time does not enter the preset time period set by the user, and step S201 is repeatedly executed.
When the current time is 7 points, determining that the current time enters a preset time period set by a user, executing step S202, and detecting the first current circulating water flow and the first current water inlet temperature of a water pump in the equipment in real time; the first current circulating water flow rate of the water pump is a relatively much smaller value in the case of the domestic water mode not being activated, compared to the water flow rate when the domestic water is used by the user.
Step S203, judging whether the first current circulating water flow reaches a first flow threshold; if the first current circulating water flow does not reach the first flow threshold, returning to the step S202, and detecting the first current circulating water flow and the first current water inlet temperature of the water pump in the equipment in real time;
if the first current circulating water flow reaches the first flow threshold, executing step S204, and judging whether the difference between the preset preheating temperature and the first current water inlet temperature is larger than a first preset return difference temperature or not; for example, the preset preheating temperature is 45 degrees, the first preset return difference temperature is 5 degrees, the first current inlet water temperature is 37 degrees, the difference is 8 degrees and is greater than the first preset return difference temperature by 5 degrees, that is, when it is determined that the difference between the preset preheating temperature and the first current inlet water temperature is greater than the first preset return difference temperature, step S205 is executed, it is determined that the preheating combustion starting condition of the cyclic preheating mode is reached, and the starting of the preheating combustion is controlled. If the detected first current water inlet temperature is 40 degrees, the difference is 5 degrees and is not greater than the first preset return difference temperature, and then the step S202 is executed and the heat preservation state is entered.
In the judging process of starting the preheating combustion, a first preset return difference temperature is added, and the preheating combustion is started when the difference between the preset preheating temperature and the current water inlet temperature exceeds the first preset return difference temperature, so that the stability of the temperature is maintained. The heating can be avoided in the prior art as long as the current water inlet temperature is smaller than the preset preheating temperature, and the phenomenon of high temperature is caused by the aggressive mode.
Referring to fig. 3, the flow of stopping the preheating combustion in the gas heating apparatus preheating control method includes the steps of:
in the preheating combustion process, executing step S301, and detecting the second current circulating water flow rate, the current water outlet temperature and the second current water inlet temperature of the water pump in real time; step S302, determining a target flow interval in which the second current circulating water flow f is located; the target flow interval comprises: a first flow interval greater than the first flow threshold and less than or equal to the second flow threshold, a second flow interval greater than the second flow threshold and less than or equal to the third flow threshold; as is clear from the above section description, the first flow rate threshold value F1< the second flow rate threshold value F2< the third flow rate threshold value F3. When the second current circulating water flow F satisfies the following relation f1< f= < F2, the water flow is in a smaller section, constant-temperature water outlet cannot be satisfied in the preheating combustion process in the section, and the condition of high water outlet temperature is easy to generate, so that a combustion limiting condition related to the water outlet temperature needs to be set, high-temperature water can be avoided, and the following steps are performed:
if the target flow interval is the first flow interval, step S303 is executed to determine whether the difference between the current outlet water temperature and the preset preheating temperature is equal to the second preset return difference temperature; the second preset return difference temperature is usually 10 degrees of a default value of the system, and needs no user modification, for example, the preset preheating temperature is 45 degrees, the current outlet water temperature reaches 55 degrees, and the difference value of the preset outlet water temperature and the preset outlet water temperature is equal to the second preset return difference temperature, so that preheating combustion needs to be stopped, namely the following steps:
if the difference between the current water outlet temperature and the preset preheating temperature is equal to the second preset return difference temperature, executing step S304, determining that the preheating combustion stopping condition is reached, and controlling to stop preheating combustion; if the difference between the current water outlet temperature and the preset preheating temperature is not equal to the second preset return difference temperature, the step S301 is returned.
When the second current circulating water flow F satisfies the following relationship f2< f= < F3, the second circulating water flow F is a section with larger water flow, that is, the target flow section is a second flow section, step S305 is executed to determine whether the difference between the preset preheating temperature and the second current water inlet temperature is equal to the first preset return difference temperature; for example, the second current inlet water temperature is 40 degrees, the preset preheating temperature is 45 degrees, the difference is 5 degrees, and the difference is equal to the first preset return difference temperature, at this time, the preheating combustion needs to be stopped to prevent high temperature water from being generated, and in the prior art, the preheating combustion is stopped when the current inlet water temperature reaches the preset preheating temperature, so that the excessive heating is easy to generate high temperature water.
The temperature range corresponding to the first preset return difference temperature is 5-15 ℃, and a user can set the temperature of the water inside the hot water pipe according to the needs by himself. The function is suitable for the condition that the circulating water quantity is smaller (relative to the flow in domestic water), the temperature difference between the outlet water temperature and the inlet water temperature is larger, and the combustion can be stopped in advance by setting the temperature difference temperature value.
If the difference between the second current inlet water temperature and the preset preheating temperature is equal to the first preset return difference temperature, step S304 is executed, it is determined that the preheating combustion stop condition is reached, and the preheating combustion is controlled to stop. If the difference between the second current inlet water temperature and the preset preheating temperature is not equal to the first preset return difference temperature, the step S301 is returned.
In addition, if the current circulating water flow is large, the circulating water flow is in a third flow interval larger than a third flow threshold value; when F satisfies the following relationship F3< F, that is, the target flow interval is the third flow interval, step S306 is executed to control the water pump to switch from the circulation preheating mode to the domestic water mode; the domestic water mode comprises a heating mode under the conditions of washing hands and faces, bathroom and the like, and the system automatically adjusts combustion firepower according to the set temperature of the bathroom and the current water inflow detected by the system so as to achieve constant-temperature water outlet.
Step S307, after the water using mode is turned off for a first designated period of time, the water pump is controlled to automatically reenter the circulating preheating mode. The first specified duration may be set differently by the user according to different requirements, where the setting range is between 180s and 600 s.
In the preferred embodiment of the present application, after the step S304 is executed to determine that the preheating combustion stop condition is reached and control the preheating combustion to stop, step S308 is further included to control the water pump to stop running for a second specified period of time, so that the water temperature in the water pump is more uniform and the water pump enters a heat preservation state. For example, when the current water outlet temperature is 10 degrees higher than the preset preheating temperature, the preheating combustion is stopped, the system defaults that the water pump operates for 2 minutes and stops, the water pump operation time is 2-5 minutes, the user can set the water pump operation time by himself, and the water temperature in the hot water pipe can be more uniform by setting the water pump operation time.
In the preheating control method for the gas heating equipment provided by the embodiment of the application, when preheating combustion is started or stopped, a user can change the temperature judgment value of starting combustion or the temperature judgment value of stopping combustion of the system by setting the return difference temperature value, so that the preheating outlet water temperature is accurately controlled, the preheating temperature is more accurately controlled, and a more comfortable bathing effect can be achieved by free setting of the user.
Based on the above method embodiment, the embodiment of the present application further provides a preheating control device for a gas heating apparatus, as shown in fig. 4, where the device includes:
a first detection module 42, configured to detect, in real time, a first current circulating water flow rate and a first current inlet water temperature of a water pump in the apparatus; the preheating opening module 44 is configured to determine whether a preheating combustion opening condition of the cyclic preheating mode is reached according to the first current circulating water flow rate, the first current water inlet temperature, the preset preheating temperature, and the preset return difference temperature; if yes, controlling to start preheating combustion; the second detection module 46 is configured to detect, in real time, a second current circulating water flow rate, a current water outlet temperature, and a second current water inlet temperature of the water pump during the preheating combustion process; the preheating stopping module 48 is configured to determine whether a preheating combustion stopping condition is reached according to a plurality of items of a second current circulating water flow rate, a current water outlet temperature, a second current water inlet temperature, a preset preheating temperature, and a preset return difference temperature; if so, control stops the pre-heat combustion.
In a preferred embodiment of the present application, the preheating start module 44 is configured to determine whether the first current circulating water flow reaches a first flow threshold; if so, judging whether the difference between the preset preheating temperature and the first current water inlet temperature is larger than a first preset return difference temperature; if so, a warm-up combustion start condition for reaching the cyclic warm-up mode is determined.
In a preferred embodiment of the present application, the preheating stopping module 48 is configured to determine a target flow interval in which the second current circulating water flow is located; the target flow interval comprises: a first flow interval greater than the first flow threshold and less than or equal to the second flow threshold, a second flow interval greater than the second flow threshold and less than or equal to the third flow threshold; if the target flow interval is the first flow interval, judging whether the difference value between the current water outlet temperature and the preset preheating temperature is equal to a second preset return difference temperature or not; if yes, determining that a preheating combustion stop condition is reached; if the target flow interval is the second flow interval, judging whether the difference between the preset preheating temperature and the second current water inlet temperature is equal to the first preset return difference temperature; if so, it is determined that the warm-up combustion stop condition is reached.
In a preferred embodiment of the present application, the target flow interval further includes: a third flow interval greater than the third flow threshold; the device further comprises a mode switching module, wherein the mode switching module is used for controlling the water pump to switch from the circulating preheating mode to the domestic water mode if the target flow interval is a third flow interval; and after the domestic water mode is closed for a first designated time period, controlling the water pump to automatically reenter the circulating preheating mode.
In a preferred embodiment of the present application, the apparatus further comprises: the time judging module is used for detecting whether the current time enters a preset time period set by a user before the step of detecting the first current circulating water flow rate and the first current water inlet temperature of the water pump in the water heater in real time; if yes, continuing to execute the step of detecting the first current circulating water flow rate and the first current water inlet temperature of the water pump in the water heater in real time.
In a preferred embodiment of the present application, the apparatus further comprises: and the heat preservation control module is used for controlling the water pump to stop running after the step of controlling to stop preheating combustion is controlled to run for a second designated time period so as to make the water temperature in the water pump more uniform and enter a heat preservation state.
In a preferred embodiment of the present application, the preset preheating temperature is a first temperature value within a first preset temperature range set by a user; the first preset return difference temperature is a second temperature value in a second preset temperature range set by a user.
The device provided by the embodiment of the present application has the same implementation principle and technical effects as those of the foregoing method embodiment, and for the sake of brief description, reference may be made to the corresponding content in the foregoing method embodiment where the device embodiment is not mentioned.
Based on the above method embodiment, the embodiment of the present application further provides a gas heating apparatus, as shown in fig. 5, the gas heating apparatus includes a housing 501, a water pump 502 disposed in the housing 501, a gas device 503, and a controller 504; the controller 504 is used to perform the method as described in the method embodiments.
In a preferred embodiment of the present application, the gas heating device includes a gas zero water heater or a gas heating water heater.
The implementation principle and the technical effects of the device provided by the embodiment of the present application are the same as those of the foregoing method embodiment, and for brevity, reference may be made to the corresponding content in the foregoing method embodiment where the device embodiment is not mentioned.
The embodiment of the application also provides a computer readable storage medium, which stores computer executable instructions that, when being called and executed by a processor, cause the processor to implement the above method, and the specific implementation can refer to the foregoing method embodiment and will not be described herein.
The method, the apparatus and the computer program product of the electronic device provided in the embodiments of the present application include a computer readable storage medium storing program codes, where the instructions included in the program codes may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be described herein.
The relative steps, numerical expressions and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above examples are only specific embodiments of the present application, and are not intended to limit the scope of the present application, but it should be understood by those skilled in the art that the present application is not limited thereto, and that the present application is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. A gas heating apparatus preheating control method, characterized by comprising:
detecting a first current circulating water flow rate and a first current water inlet temperature of a water pump in the equipment in real time;
judging whether the first current circulating water flow reaches a first flow threshold value or not; if so, judging whether the difference between the preset preheating temperature and the first current water inlet temperature is larger than a first preset return difference temperature; if yes, determining a preheating combustion starting condition reaching a cyclic preheating mode, and controlling to start preheating combustion;
in the preheating combustion process, detecting a second current circulating water flow, a current water outlet temperature and a second current water inlet temperature of the water pump in real time;
determining a target flow interval in which the second current circulating water flow is located; wherein the target flow interval includes: a first flow interval greater than the first flow threshold and less than or equal to a second flow threshold, a second flow interval greater than the second flow threshold and less than or equal to a third flow threshold;
if the target flow interval is the first flow interval, judging whether the difference value between the current water outlet temperature and the preset preheating temperature is equal to a second preset return difference temperature or not; if yes, determining that the preheating combustion stopping condition is reached, and controlling to stop the preheating combustion;
if the target flow interval is the second flow interval, judging whether the difference value between the preset preheating temperature and the second current water inlet temperature is equal to the first preset return difference temperature or not; if so, it is determined that the warm-up combustion stop condition is reached, control is made to stop the warm-up combustion.
2. The method of claim 1, wherein the target flow interval further comprises: a third flow interval greater than the third flow threshold; the method further comprises the steps of:
if the target flow interval is the third flow interval, controlling the water pump to switch from the circulating preheating mode to a domestic water mode;
and after the domestic water mode is closed for a first designated time period, controlling the water pump to automatically reenter the circulating preheating mode.
3. The method of claim 1, further comprising, prior to the step of detecting in real time the first current circulating water flow rate and the first current inlet water temperature of the water pump in the water heater:
detecting whether the current time enters a preset time period set by a user;
if yes, continuing to execute the step of detecting the first current circulating water flow rate and the first current water inlet temperature of the water pump in the water heater in real time.
4. The method according to claim 1, characterized by further comprising, after the step of controlling to stop the pre-heating combustion:
and controlling the water pump to stop running after running for a second designated time so as to make the water temperature in the water pump more uniform and enter a heat preservation state.
5. The method of claim 1, wherein the preset preheat temperature is a first temperature value within a first preset temperature range set by a user; the first preset return difference temperature is a second temperature value in a second preset temperature range set by a user.
6. A gas heating apparatus preheating control device, characterized in that the device comprises:
the first detection module is used for detecting the first current circulating water flow and the first current water inlet temperature of the water pump in the equipment in real time;
the preheating starting module is used for judging whether the first current circulating water flow reaches a first flow threshold value or not; if so, judging whether the difference between the preset preheating temperature and the first current water inlet temperature is larger than a first preset return difference temperature; if yes, determining a preheating combustion starting condition reaching a cyclic preheating mode, and controlling to start preheating combustion;
the second detection module is used for detecting the second current circulating water flow, the current water outlet temperature and the second current water inlet temperature of the water pump in real time in the preheating combustion process;
the preheating stopping module is used for determining a target flow interval in which the second current circulating water flow is located; wherein the target flow interval includes: a first flow interval greater than the first flow threshold and less than or equal to a second flow threshold, a second flow interval greater than the second flow threshold and less than or equal to a third flow threshold; if the target flow interval is the first flow interval, judging whether the difference value between the current water outlet temperature and the preset preheating temperature is equal to a second preset return difference temperature or not; if yes, determining that the preheating combustion stopping condition is reached, and controlling to stop the preheating combustion; if the target flow interval is the second flow interval, judging whether the difference value between the preset preheating temperature and the second current water inlet temperature is equal to the first preset return difference temperature or not; if so, it is determined that the warm-up combustion stop condition is reached, control is made to stop the warm-up combustion.
7. The gas heating equipment is characterized by comprising a shell, a water pump, a gas device and a controller, wherein the water pump, the gas device and the controller are arranged in the shell; the controller is configured to perform the method of any one of claims 1 to 5.
8. The gas heating apparatus of claim 7, wherein the gas heating apparatus comprises a gas zero water heater or a gas heating water heater.
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