CN113175752B - Filter screen filth blockage detection method for gas heating equipment - Google Patents
Filter screen filth blockage detection method for gas heating equipment Download PDFInfo
- Publication number
- CN113175752B CN113175752B CN202110379268.0A CN202110379268A CN113175752B CN 113175752 B CN113175752 B CN 113175752B CN 202110379268 A CN202110379268 A CN 202110379268A CN 113175752 B CN113175752 B CN 113175752B
- Authority
- CN
- China
- Prior art keywords
- water
- filter screen
- flow
- pipeline
- delta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention discloses a method for detecting filth blockage of a filter screen of gas heating equipment, which comprises a heat exchanger; the combustion device heats water in the heat exchanger; the water inlet pipeline is communicated with a water inlet of the heat exchanger and is communicated with an external water supply pipeline and an external water return pipeline; the water outlet pipeline is communicated with a water outlet of the heat exchanger and is communicated with an external water pipeline; the water pump is arranged on the water inlet pipeline, the water pump is started, and the water inlet pipeline, the water supply pipeline, the water using pipeline and the water outlet pipeline form a circulating loop; the filter screen is arranged at the inlet of the water inlet pipeline; the method comprises the following steps: when the first condition or the second condition is met, controlling the water pump to start and detecting the flow value of water in the water inlet pipeline; determining whether the filter screen is dirty or blocked according to the detected flow value; the first condition is: receiving a signal that the gas heating device enters a zero cold water standby mode; detecting the water inlet temperature of a water inlet pipeline; the detected water inlet temperature is lower than the preset temperature; the second condition is: and receiving a signal for detecting filth blockage of the filter screen.
Description
Technical Field
The invention relates to the technical field of gas heating equipment, in particular to a filter screen filth blockage detection method of gas heating equipment.
Background
The household tap water has impurities such as rust, sand and stones which accumulate for a long time and block a filter screen at the water inlet of a gas water heater or a gas heating water heater.
For a gas water heater or a gas heating water heater with a circulating preheating function, if excessive impurities are accumulated on a filter screen of an inner water channel pipeline, the flow of water in the water channel pipeline is reduced, the flow of water in the water channel pipeline is unstable, so that the constant temperature effect of the gas water heater or the gas heating water heater is poor, the problem of overheating or sudden cooling and sudden heating of water supply temperature can occur, and the zero cold water function of the gas water heater or the gas heating water heater can not be started seriously.
Disclosure of Invention
The embodiment of the application provides a method for detecting filth blockage of a filter screen of gas heating equipment, which is used for detecting whether the filth blockage of the filter screen in a water channel pipeline of a gas water heater or a gas heating hot water heater occurs or not so as to prompt a user to clean or replace the filter screen in time.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
the embodiment of the application provides a dirty stifled detection method of filter screen of gas firing equipment, gas firing equipment includes: a heat exchanger; a combustion device for heating the water in the heat exchanger; the water inlet pipeline is communicated with a water inlet of the heat exchanger and is used for being communicated with an external water supply pipeline and an external water return pipeline; the water outlet pipeline is communicated with the water outlet of the heat exchanger and is used for being communicated with an external water using pipeline; the water pump is arranged on the water inlet pipeline, and when the water pump is started, the water inlet pipeline can form a circulating loop with the water supply pipeline, the water using pipeline and the water outlet pipeline; the filter screen is arranged at the inlet of the water inlet pipeline; the filter screen filth blockage detection method comprises the following steps: when a first condition or a second condition is met, controlling the water pump to start and detecting the flow value of water in the water inlet pipeline; determining whether the filter screen is dirty or not according to the detected flow value; wherein the first condition is: receiving a signal that the gas heating equipment enters a zero cold water standby mode; detecting the water inlet temperature of the water inlet pipeline; the detected inlet water temperature is lower than the preset temperature; the second condition is: and receiving a signal for detecting filth blockage of the filter screen.
In some possible embodiments of the present application, the determining is based on a detected flow valueWhether the filter screen is dirty or not specifically comprises: according to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Calculating to obtain a flow ratio delta; wherein, V0The value is the minimum starting water flow value, and V is the flow value of water in the water inlet pipeline when the filter screen is not dirty and blocked; according to the flow ratio delta and the first preset flow ratio delta1Determining whether the filter screen is dirty or not.
In some possible embodiments of the present application, the flow ratio δ is a ratio of a first predetermined flow ratio δ to a second predetermined flow ratio δ1The determining whether the filter screen is dirty or not specifically comprises: when delta < delta1In time, dirty blockage of the filter screen is determined; wherein, delta1Less than 1; when delta is larger than or equal to delta1And when the filter screen is not dirty and blocked, the filter screen is determined to be not dirty and blocked.
In some possible embodiments of the present application, when δ < δ1In time, determining that the filter screen is filthy comprises: when delta2≤δ＜δ1When the filter screen is dirty and slightly blocked, the filter screen is determined to be slightly blocked, wherein delta2Is a second predetermined flow ratio, and is 0 < delta2＜δ1(ii) a When delta3≤δ＜δ2When the filter screen is dirty and in a moderate blockage state, wherein delta3Is a third preset flow ratio, and delta is more than 03＜δ2(ii) a When delta < delta2And when the filter screen is blocked, the filter screen is determined to be in a severe blocking state.
In some possible embodiments of the present application, the flow value V is detected according to a detectioniAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ includes: when V isi＜V0When the water pump is started, the control unit sends out a fault prompt and turns off the water pump; when V isi≥V0According to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain the flow ratio delta.
In some possible embodiments of the present application, the method further includes: when V isi≥V0When the first condition is met, executing a zero cold water flow; the zero-cold water flow bagThe method comprises the following steps: controlling the combustion device to heat; when the detected inlet water temperature is greater than or equal to a preset temperature, controlling the combustion device to stop heating and turning off the water pump; and when the detected inlet water temperature is lower than the preset temperature, controlling the combustion device to keep heating.
In some possible embodiments of the present application, said current V isi≥V0And when the first condition is satisfied, according to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ includes: when V isi≥V0Then, recording the number j of times of executing the zero-cold-water flow; when the number j of times of executing the zero cold water flow is larger than the preset number N, the flow value V is detectediAnd the formula δ ═ Vi-V0)/(V-V0) Calculating to obtain a flow ratio delta; when the number j of times of executing the zero-cold water flow is less than the preset number N, recording the flow value V detected in the zero-cold water flow executed this timei(ii) a When the number j of times of executing the zero-cold water flow is equal to the preset number N, recording the flow value V detected in the zero-cold water flow executed this timeiAnd calculating the flow value V detected in the previous N times of zero-cold water flow executioniAnd taking the average value as the flow value V of the water in the water inlet pipeline when the filter screen is not dirty and blocked.
In some possible embodiments of the present application, after determining that the filter screen is dirty, the method further includes: and sending the filter screen filth blockage prompt to the terminal equipment.
In some possible embodiments of the present application, the gas heating apparatus further includes a buzzer, and after the filter screen is determined to be dirty and clogged, the gas heating apparatus further includes: and controlling the buzzer to give out an alarm prompt sound.
After the water pump in the gas water heater in the embodiment of the application is started, the water channel pipeline outside the gas water heater, the water inlet pipeline inside the gas water heater and the water outlet pipeline can form a circulation loop, and the water flow rate in the circulation loop is relatively stable, so that the filter screen filth blockage detection method in the embodiment of the application can determine whether the filter screen is filth-blocked or not through the detected current flow value of water in the water inlet pipeline, for example, when the detected flow value is lower than a preset flow value, the filter screen is determined to have a filth blockage problem; when the detected flow value is higher than the preset flow value, the filter screen can be determined to have no dirty blockage problem. Therefore, the filter screen filth blockage detection method can realize detection of the filter screen filth blockage problem, can early warn the filth blockage problem of the filter screen in advance, enables a user to timely clean or replace the filter screen, and avoids energy consumption loss of the gas water heater.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic connection diagram of a gas water heater and an external water channel pipe in a state of supplying warm water according to an embodiment of the present application;
FIG. 2 is a schematic connection diagram of a connection between a gas water heater and an external waterway pipeline in a cold water supply state according to an embodiment of the present application;
FIG. 3 is a schematic connection diagram of a gas water heater and an external water channel pipe in a heating state according to an embodiment of the present application;
FIG. 4 is a schematic connection diagram of a connection between a gas water heater and an external water channel pipe and in a zero-cold water flow path according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a method for detecting filth blockage of a filter screen of a gas water heater according to embodiment 1;
fig. 6 is a schematic block flow diagram illustrating a zero cold water flow in the method for detecting filth blockage of a filter screen of a gas water heater in accordance with the present embodiment 1;
fig. 7 is a schematic flow chart illustrating a method for detecting filth blockage of a filter screen of a gas water heater according to embodiment 3.
Reference numerals:
100-gas water heater, 1-shell, 2-combustion device, 3-water inlet pipeline, 4-water outlet pipeline, 5-water pump, 6-filter screen, 7-main controller, 200-external water channel pipeline, 201-water inlet pipeline, 202-water using pipeline, 203-water return pipeline, 204-bypass pipeline, 205-water using device, 206-one-way valve.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, "and/or" is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
The embodiment of the application is a gas heating device, and the application does not limit the specific form of the gas heating device, for example, the gas heating device may be a gas water heater, a gas heating water heater, or the like.
The following further describes embodiments of the present application, taking the gas heating apparatus of the present application as a gas water heater as an example.
Referring to fig. 1, a gas water heater 100 according to an embodiment of the present application includes a housing 1, a combustion device 2, a heat exchanger, an ignition device, a smoke collecting hood, a gas supply assembly, and a water path assembly, wherein the combustion device 2, the heat exchanger, the smoke collecting hood, and the ignition device are all installed in the housing 1.
The heat exchanger is located above the combustion device 2 and is capable of heating the water in the heat exchanger when the combustion device 2 is burning.
The ignition device is used for igniting the mixture at the combustion device 2; the smoke collecting hood is arranged above the heat exchanger and communicated with the exhaust pipeline, and the smoke collecting hood can guide out smoke generated after gas combustion through the exhaust pipeline.
The gas supply assembly comprises a gas supply pipeline and a gas control valve arranged on the gas supply pipeline, the gas supply pipeline is communicated with an external gas pipeline (or gas supply equipment), the gas supply pipeline is used for supplying gas to the combustion device 2, and the gas control valve can control whether the gas supply pipeline supplies gas to the combustor or not.
The waterway assembly comprises a water inlet pipeline 3, a water outlet pipeline 4 and a water pump 5, wherein the water inlet pipeline 3 is communicated with a water inlet of the heat exchanger, the water outlet pipeline 4 is communicated with a water outlet of the heat exchanger, and the water pump 5 is arranged on the water inlet pipeline 3.
The external water channel 200 connected to the gas water heater 100 includes a water supply channel 201, a water using channel 202, a water return channel 203 and a bypass channel 204, wherein the water supply channel 201 is a cold water channel, and the water supply channel is connected to the water inlet channel 3 of the gas water heater 100; the water using pipeline 202 is a hot water pipeline, the water using pipeline 202 is communicated with the water outlet pipeline 4 of the gas water heater 100 to supply hot water to the water using device 205, and the water return pipeline 203 is communicated with the water inlet pipeline 3 of the gas water heater 100; two ends of the water using device 205 are respectively communicated with the water using pipeline 202 and the water return pipeline 203; the bypass pipe 204 is connected to the water consumption device 205 at the farthest end from the gas water heater 100 and connected in parallel with the water consumption device 205 (such as a faucet, a shower head, etc.), and the bypass pipe 204 is installed with a check valve 206, so that when the water pump 5 in the gas water heater 100 is started, the water inlet pipe 3, the water outlet pipe 4, the water consumption pipe 202, the bypass pipe 204 and the water return pipe 203 can form a circulation loop.
When the water using device 205 is turned on and stays at the position for supplying warm water, a part of cold water in the water supply pipeline 201 is supplied to the water using device 205 through the water return pipeline 203, another part of cold water in the water supply pipeline 201 enters the heat exchanger through the water inlet pipeline 3, the ignition device is ignited, the burner starts burning to heat the water entering the heat exchanger, the heated water in the heat exchanger is led out to the position of the water using device 205 through the water outlet pipeline 4 and the water using pipeline 202 and is mixed with the cold water at the outlet of the water return pipeline 203, and therefore the water using device 205 outputs warm water, as shown in fig. 1.
When the water using device 205 is turned on and stays at the cold water supply position, the water supply pipe 201 directly supplies cold water to the water using device 205 through the water return pipe 203, as shown in fig. 2.
When the water using device 205 is turned on and stays at the hot water supply position, the cold water in the water supply pipeline 201 enters the heat exchanger through the water inlet pipeline 3, the ignition device is ignited, the burner starts to burn to heat the water entering the heat exchanger, the heated water in the heat exchanger is led out to the water using device 205 through the water outlet pipeline 4 and the water using pipeline 202, and the function of discharging hot water to the water using device 205 is achieved, as shown in fig. 3.
When the water using device 205 is turned off and the water pump 5 is started, the cold water in the water pipe 202 driven by the water pump 5 enters the water return pipe 203 through the check valve 206 on the bypass pipe 204, is reintroduced into the heat exchanger through the water inlet pipe 3, is heated by the gas water heater 100, and is reintroduced into the water pipe 202, as shown in fig. 4, the function of zero cold water of the gas water heater 100 is realized.
It should be noted that a water inlet joint may be installed at an inlet of the water inlet pipeline 3, and the water inlet joint may facilitate the communication between the water inlet pipeline 3 and the external water supply pipeline 201 and the external water return pipeline 203; similarly, the outlet of the water outlet pipe 4 can be provided with a water outlet joint which can facilitate the communication between the water outlet pipe 4 and the external water pipe 202,
referring to fig. 1, the gas water heater 100 of the embodiment of the present invention further includes a filter screen 6, the filter screen 6 is installed at an inlet of the water inlet pipe 3 (e.g., at a water inlet joint), and the filter screen 6 is capable of filtering impurities contained in water introduced into the water inlet pipe 3 by the water return pipe 203 and the water supply pipe.
The inlet of the water inlet pipeline 3 is also provided with a temperature detection device which can detect the water inlet temperature of the water inlet pipeline 3. Above-mentioned temperature-detecting device can be temperature controller or temperature sensor, and temperature sensor has that the temperature measurement error is little, the price is low, response speed is fast, transmission distance is far away, small, advantage such as little consumption, consequently, temperature-detecting device in this application embodiment adopts temperature sensor.
Still install flow detection device in the above-mentioned inlet channel 3, flow detection device can detect the discharge in the inlet channel 3. Specifically, the flow detection device is also a flow detection sensor, and has the advantages of small volume, sensitive detection and the like.
The gas water heater 100 in the embodiment of the present application further includes a main controller 7, the main controller 7 is electrically connected to the temperature detection device, the flow detection device, the water pump 5, the gas control valve, and the like, and the main controller 7 controls each component in the gas water heater 100 to perform a corresponding action according to a detection value of the temperature detection device and a detection value of the flow detection device, such as controlling the water pump 5 to be turned on or off, and controlling the gas control valve to be turned on or off.
For the gas water heater 100 of the embodiment of the present application, after the filter screen 6 accumulates excessive accumulated impurities, the water flow rate of the water path pipeline in the gas water heater 100 is reduced, and the water flow rate in the water path pipeline is unstable, so that the constant temperature effect of the gas water heater 100 is poor, the water supply temperature is overheated or suddenly cooled and suddenly heated, and seriously, the zero cold water function of the gas water heater 100 cannot be started.
Example 1
In order to solve the above problem, the gas water heater of the present embodiment employs the following method for detecting filth blockage of the filter screen. Referring to fig. 5, the filter screen filth blockage detection method includes the following steps:
step S100: and receiving a signal that the gas water heater enters a zero cold water standby mode.
In this embodiment, a control button in a zero-cold-water mode (the control button is a physical button, and certainly, for a gas water heater with a control panel, the control button is a touch key on the control panel) is disposed on an outer shell of the gas water heater, and when a user presses the control button, the controller receives a signal that the gas water heater enters the zero-cold-water standby mode. The controller can be the main controller or a special controller specially used for executing the filter screen filth blockage detection method.
Step S200: detecting inlet water temperature T in inlet pipei。
The temperature detection device can detect the water inlet temperature T in the water inlet pipelineiThe controller obtains the real-time water inlet temperature T in the water inlet pipeline from the temperature detection devicei。
Step S300: when the detected inlet water temperature TiLess than a predetermined temperature TsIn time, the water pump is controlled to start and the flow value V of water in the water inlet pipeline is detectedi。
When the detected inlet water temperature TiGreater than or equal to a predetermined temperature TsAnd meanwhile, controlling the gas water heater to be kept in a zero cold water standby mode.
The inlet water temperature T detected by the temperature detection deviceiGreater than or equal to a predetermined temperature TsAnd the controller controls all parts of the gas water heater to be kept in a current standby state (for example, the gas control valve and the water pump are kept closed). When the inlet water temperature T detected by the temperature detection deviceiLess than a predetermined temperature TsAnd when the water temperature of the waterway pipeline outside the gas water heater is lower, the controller controls the water pump to start and obtains the flow value of the water in the water inlet pipeline from the flow detection device. The above-mentioned preset temperature TsTarget temperature T set for usermSubtracting a preset temperature difference delta T, wherein the delta T is the preset temperature, and the value range of the delta T is 5-10 ℃.
Step S400: according to the detected flow value ViAnd determining whether the filter screen is dirty or not.
After the water pump in the gas water heater is started, the water inlet pipeline, the water outlet pipeline, the water using pipeline, the bypass pipeline and the water return pipeline can form a circulation loop, and the water flow rate in the circulation loop is relatively stable, so that the filter screen filth blockage detection method can determine whether the filter screen is filth-blocked or not through the currently detected flow value of the water in the water inlet pipeline, for example, when the detected flow value is lower than a preset flow value, the filter screen is determined to have the filth blockage problem; when the detected flow value is higher than the preset flow value, the filter screen can be determined not to have the dirty blockage problem. Therefore, the filter screen filth blockage detection method can realize the detection of the filter screen filth blockage problem, and can early warn the filth blockage problem of the filter screen in advance, so that a user can timely clean the filter screen, and the energy consumption loss of the gas water heater in low flow for a long time is reduced.
With reference to fig. 5, the step S400 in this embodiment specifically includes:
step S401: according to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain the flow ratio delta.
Wherein, V0Is the minimum starting water flow value, and V is the flow value of water in the water inlet pipeline when the filter screen is not dirty and blocked. The controller includes a processing module that processes the data according to the formula δ ═ Vi-V0)/(V-V0) And the acquired flow value ViAnd calculating to obtain the flow ratio delta.
Step S402: according to the flow ratio delta and the first preset flow ratio delta1The size relationship of the filter screen determines whether the filter screen is dirty or not.
Wherein, due to ViV or less, so, delta1Is less than 1.
The filter screen filth blockage detection method of the embodiment adopts the flow ratio delta to determine whether the filter screen is filth blocked, and can consider that the minimum starting water flow values of different gas water heaters are different, and the flow values of water in the water inlet pipeline are different when the filter screen is not filth blocked in different installation environments, so that the result of determining whether the filter screen is filth blocked according to the flow ratio delta is accurate.
It should be noted that the step S402 specifically includes:
when delta < delta1In time, dirty blockage of the filter screen is determined; when delta is larger than or equal to delta1And when the filter screen is not dirty and blocked, the filter screen is determined to be not dirty and blocked.
In order to further clarify the current filth blockage degree of the filter screen, the above-mentioned value delta < delta in this embodiment1In time, determining that the filter screen is dirty specifically comprises:
when delta2≤δ＜δ1When the filter screen is dirty and slightly blocked, the filter screen is determined to be slightly blocked, wherein delta2Is a second predetermined flow ratio, and is 0 < delta2＜δ1。
When delta3≤δ＜δ2When the filter screen is dirty and in a moderate blockage state, wherein delta3Is a third preset flow ratio, and delta is more than 03＜δ2。
When delta < delta2And when the filter screen is blocked, the filter screen is determined to be in a severe blocking state.
The controller can judge the filth blockage degree of the current filter screen according to the numerical range of the flow ratio delta to remind a user of the filth blockage degree of the current filter screen, so that whether the filter screen needs to be cleaned or replaced can be judged.
It should be noted that, in some embodiments of the present application, the controller in the gas water heater further includes a network module, the network module can interact with the terminal device, for example, the control module in the controller sends various device state information or parameter information of the gas water heater to the terminal device through the network module, or a user sends a control command through the terminal device, and the controller of the gas water heater receives the control command through the network module and controls the gas heating device to execute a corresponding control command. It should be noted that the network module may be a WIFI module, and the terminal device may be a mobile phone or a tablet computer.
After confirming that the filter screen is dirty stifled, can in time remind the user to know this condition, to the gas heater that has the network module, the dirty stifled detection method of filter screen of this embodiment still includes after the step of confirming that the filter screen is dirty stifled:
and sending the prompt information of filth blockage of the filter screen to the terminal equipment.
The filter screen filth blockage information sent to the terminal device by the controller can be a symbol representing filter screen filth blockage, can also be problem information of filter screen filth blockage, and can also comprise filter screen filth blockage state information (such as a severe blockage state, a moderate blockage state or a mild blockage state).
In some embodiments of the present application, the controller in the gas heating apparatus further includes a display device (e.g., a display screen), and after the step of determining that the filter screen is dirty, the filter screen dirty-blockage detecting method of this embodiment further includes:
and controlling and displaying prompt information of filth blockage of the filter screen.
Namely, the controller sends the filter screen filth blockage prompt information to the display device, so that the display device displays the filter screen filth blockage prompt information.
In some embodiments of the present application, the controller in the gas heating apparatus further includes a buzzer, and the filter screen filth blockage detection method of this embodiment further includes, after the step of determining that the filter screen is filth blocked:
and controlling the buzzer to give out an alarm prompt sound.
The controller is electrically connected with the buzzer, and the controller controls the buzzer to send out corresponding prompt sound for indicating the filth blockage of the filter screen, or controls the buzzer to send out alarm prompt sound corresponding to the state information (such as a severe blockage state, a moderate blockage state or a slight blockage state) of the filth blockage of different filter screens.
E.g. delta as described above1Is 0.8, delta2Is 0.6, delta3Is 0.2. When delta is more than or equal to 0 and less than 0.2, the filter screen is in a severe blockage state, an icon of the severe blockage of the filter screen on a display device of the gas water heater is lightened, and meanwhile, the buzzer sends out a corresponding sound prompt of the severe blockage and sends out a prompt message of the severe blockage of the filter screen to the client; when delta is more than or equal to 0.2 and less than 0.6, the filter screen is in a moderate blockage state, an icon of the moderate blockage of the filter screen on a display device of the gas water heater is lightened, and meanwhile, the buzzer sends out a sound prompt corresponding to the moderate blockage and sends out a prompt message of the moderate blockage of the filter screen to the client; when delta is more than or equal to 0.6 and less thanWhen the time is 0.8, the filter screen is in a slight blockage state, an icon of the slight blockage of the filter screen on a display device of the gas water heater is lightened, and meanwhile, the buzzer sends out a corresponding sound prompt of the slight blockage and sends out a prompt message of the slight blockage of the filter screen to the client; and when the delta is more than or equal to 0.8, determining that the filter screen is not dirty and blocked.
Considering that the filth blockage of the filter screen cannot be detected when the water path of the gas water heater is in fault, the step S401 in this embodiment specifically includes:
when V isi＜V0And when the water pump is started, the control unit sends out a fault prompt and closes the water pump.
When V isi≥V0According to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain the flow ratio delta.
After the water pump is normally started, the flow of water in the water pump driving circulation loop is larger than the minimum starting water flow value V0Therefore, when the detected flow rate value V isi＜V0When the fault occurs, the fault indicates that the fault occurs in a water path component in the gas water heater or an external water path pipeline connected with the gas water heater, the fault needs to be repaired, the controller controls the fault to send out a fault prompt and controls the water pump to be closed, the fault prompt can send out a prompt sound corresponding to the corresponding fault for the buzzer, and a display device of the gas water heater displays a corresponding fault code to prompt a user to check immediately and clean and maintain in time; when the detected flow value V isi≥V0In the process, the water channel assembly in the gas water heater or the external water channel pipeline connected with the gas water heater is normal, and the filth blockage problem of the filter screen can be detected, so that the flow value V according to the detection can be executediAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain the flow ratio delta.
It should be noted that the method for detecting filth blockage of a filter screen in this embodiment further includes:
when V isi≥V0And executing a zero cold water flow.
Referring to fig. 6, the zero cold water flow includes the following steps:
step S4011: and controlling the heating of the combustion device.
The controller controls the gas control valve to be opened, and the ignition device ignites to control the heating of the combustion device.
Step S4012: when the detected inlet water temperature TiGreater than or equal to a preset temperature value TsControlling the combustion device to stop heating and the water pump to be closed;
when the detected inlet water temperature TiLess than a predetermined temperature value TsAnd controlling the combustion device to keep heating.
The temperature T of inlet water in the inlet pipe acquired by the controller from the temperature detection deviceiGreater than or equal to a preset temperature value TsAnd the water temperature in the water using pipeline can meet the requirements of users, so that the controller controls the gas control valve to be closed, the gas supply to the combustion device is stopped, the combustion device stops heating, the water pump is controlled to be closed, and the water in the circulating pipeline stops circulating.
In order to ensure that the flow value V of the water in the water inlet pipeline is accurate when the filter screen is not dirty and blocked, only when the gas water heater is installed for the first time and the exhaust and pipeline cleaning of the water pipeline are good, the flow value detected by the flow detection device is used as the flow value V of the water in the water inlet pipeline when the filter screen is not dirty and blocked and is stored in a storage module of the controller when zero cold water circulation is executed for the first time. And if the installation environment is poor, the average value of the flow values detected by the flow detection device when zero cold water circulation is required to be executed for multiple times is used as the flow value V of water in the water inlet pipeline when the filter screen is not dirty and blocked, and the flow value V is stored in a storage module of the controller.
Therefore, in the embodiment, the flow value V of water in the water inlet pipeline when the filter screen of the gas water heater is not dirty and blocked is an average value of flow values of water in zero-cooling water flow executed N times before the gas water heater, wherein the value range of N is 1-30.
To achieve the above, when V isi≥V0According to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ includes:
when V isi≥V0Then, the number j of times the zero cold water flow is executed is recorded.
When the number j of times of executing the zero cold water flow is larger than the preset number N, detecting the flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain a flow ratio delta.
When the number j of times of executing the zero-cold water flow is less than the preset number N, recording the flow value V detected in the zero-cold water flow executed this timei。
When the number j of times of executing the zero-cold water flow is equal to the preset number N, recording the flow value V detected in the zero-cold water flow executed this timeiAnd calculating the flow value V detected in the previous N times of zero-cold water flow executioniAnd taking the average value as the flow value V of the water in the water inlet pipeline when the filter screen is not dirty and blocked.
Namely, when the zero cold water flow is executed for the first N times by the gas water heater, the installation time of the filter screen is short, and the probability of the occurrence of the filth blockage problem is low, so that the gas water heater can execute the control operation of confirming whether the filter screen is filth-blocked or not at the (N + 1) th time, and the judgment of whether the filter screen is filth-blocked or not is accurate.
Example 2
The present embodiment is a gas water heater, which has a mechanical structure required for implementing the method for detecting dirty/clogged filter screen described in embodiment 1, and can implement a function of detecting whether a filter screen is dirty/clogged by using the method for detecting dirty/clogged filter screen described in embodiment 1.
Example 3
The method for detecting dirty plugging of a filter screen according to embodiment 1 is a method for automatically detecting whether the filter screen is dirty or not when a zero-cold-water flow is executed. Referring to fig. 7, the gas water heater of the present embodiment is a filter screen filth blockage detection method started by a user instruction, and the filter screen filth blockage detection method includes the following steps:
step P100: and receiving a signal for detecting filth blockage of the filter screen.
In this embodiment, the housing of the gas water heater is further provided with a control button for detecting filth blockage of the filter screen (the control button is a physical button, and certainly, for the gas water heater with the control panel, the control button is a touch button on the control panel), and when the user presses the control button, the controller receives a signal for detecting filth blockage of the filter screen.
Step P200: controlling the water pump to start and detecting the flow value V of water in the water inlet pipelinei。
Step P300: according to the detected flow value ViAnd determining whether the filter screen is dirty or not.
The method for detecting filth blockage of a filter screen in this embodiment executes a corresponding filth blockage detection process (i.e., step P200 and step P300) after receiving a signal for detecting filth blockage of the filter screen input by a user, which is similar to the detection process in embodiment 1, and therefore, the method for detecting filth blockage of a filter screen in this embodiment can obtain the same technical effects as embodiment 1, and is not described herein again.
The main operation steps of the filter screen filth blockage detection method in this embodiment are similar to those of the filter screen filth blockage detection method described in the above embodiment, and are not described again here.
Example 4
The present embodiment is a gas water heater, which has an equipment structure required for implementing the filter screen filth blockage detection method described in embodiment 3, and can implement a function of detecting whether a filter screen is filth-blocked by using the filter screen filth blockage detection method described in embodiment 3.
Example 5
The present embodiment is a gas water heater, which has an apparatus structure required for implementing the filter screen filth blockage detection methods described in embodiments 1 and 3, and can implement a function of detecting whether a filter screen is filth-blocked by using the filter screen filth blockage detection methods described in embodiments 1 and 3.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within 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 (6)
1. A filter screen filth blockage detection method of gas heating equipment is characterized by comprising the following steps:
a heat exchanger;
a combustion device for heating the water in the heat exchanger;
the water inlet pipeline is communicated with a water inlet of the heat exchanger and is used for being communicated with an external water supply pipeline and an external water return pipeline;
the water outlet pipeline is communicated with the water outlet of the heat exchanger and is used for being communicated with an external water using pipeline;
the water pump is arranged on the water inlet pipeline, and when the water pump is started, the water inlet pipeline can form a circulating loop with the water supply pipeline, the water using pipeline and the water outlet pipeline;
the filter screen is arranged at the inlet of the water inlet pipeline;
the filter screen filth blockage detection method comprises the following steps:
when a first condition or a second condition is met, controlling the water pump to start and detecting the flow value of water in the water inlet pipeline;
determining whether the filter screen is dirty or not according to the detected flow value;
wherein the first condition is: receiving a signal that the gas heating equipment enters a zero cold water standby mode; detecting the water inlet temperature of the water inlet pipeline; the detected inlet water temperature is lower than the preset temperature;
the second condition is: receiving a signal for detecting filth blockage of the filter screen;
the determining whether the filter screen is dirty or not according to the detected flow value specifically comprises:
according to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Calculating to obtain a flow ratio delta; wherein, V0The value is the minimum starting water flow value, and V is the flow value of water in the water inlet pipeline when the filter screen is not dirty and blocked;
according to the flow ratio delta and the first preset flow ratio delta1Determining whether the filter screen is dirty or not;
according to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ includes:
when V isi≥V0According to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Calculating to obtain a flow ratio delta;
the filter screen filth blockage detection method of the gas heating equipment further comprises the following steps:
when V isi≥V0When the first condition is met, executing a zero cold water flow;
the zero cold water flow comprises the following steps:
controlling the combustion device to heat;
when the detected inlet water temperature is greater than or equal to a preset temperature, controlling the combustion device to stop heating and turning off the water pump;
when the detected inlet water temperature is lower than the preset temperature, controlling the combustion device to keep heating;
when V isi≥V0According to the detected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ includes:
when V isi≥V0When the first condition is met, recording the times j of executing the zero cold water flow;
when the number j of times of executing the zero cold water flow is larger than the preset number N, detecting the flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) And calculating to obtain a flow ratio delta；
When the number j of times of executing the zero-cold water flow is less than the preset number N, recording the flow value V detected in the zero-cold water flow executed this timei；
When the number j of times of executing the zero-cold water flow is equal to the preset number N, recording the flow value V detected in the zero-cold water flow executed this timeiAnd calculating the flow value V detected in the previous N times of zero-cold water flow executioniAnd taking the average value as the flow value V of the water in the water inlet pipeline when the filter screen is not dirty and blocked.
2. The method for detecting dirty filter screen of gas heating equipment according to claim 1, wherein the flow ratio δ is determined according to a ratio of the flow to a first predetermined flow δ1The determining whether the filter screen is dirty or not specifically comprises:
when delta < delta1In time, dirty blockage of the filter screen is determined; wherein, delta1＜1；
When delta is larger than or equal to delta1And when the filter screen is not dirty and blocked, the filter screen is determined to be not dirty and blocked.
3. The method for detecting filth clogging of filter screen of gas heating equipment according to claim 2, wherein when δ < δ1In time, determining that the filter screen is dirty specifically comprises:
when delta2≤δ＜δ1When the filter screen is dirty and slightly blocked, the filter screen is determined to be slightly blocked, wherein delta2Is a second predetermined flow ratio, and is 0 < delta2＜δ1；
When delta3≤δ＜δ2When the filter screen is dirty and in a moderate blockage state, wherein delta3Is a third preset flow ratio, and delta is more than 03＜δ2；
When delta < delta2And when the filter screen is blocked, the filter screen is determined to be in a severe blocking state.
4. The method for detecting filth clogging of filter screen of gas heating equipment according to claim 1, wherein the method is based onDetected flow value ViAnd the formula δ ═ Vi-V0)/(V-V0) Specifically, the step of calculating the flow ratio δ further includes:
when V isi＜V0And when the water pump is started, the control unit sends out a fault prompt and closes the water pump.
5. The method for detecting the filth blockage of the filter screen of the gas heating equipment according to claim 2 or 3, further comprising, after the filter screen filth blockage is determined:
and sending the filter screen filth blockage prompt to the terminal equipment.
6. The method for detecting dirty filter screen of gas heating device according to claim 2 or 3, wherein the gas heating device further includes a buzzer, and after the filter screen is determined to be dirty, the method further includes:
and controlling the buzzer to give out an alarm prompt sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110379268.0A CN113175752B (en) | 2021-04-08 | 2021-04-08 | Filter screen filth blockage detection method for gas heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110379268.0A CN113175752B (en) | 2021-04-08 | 2021-04-08 | Filter screen filth blockage detection method for gas heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113175752A CN113175752A (en) | 2021-07-27 |
| CN113175752B true CN113175752B (en) | 2022-06-10 |
Family
ID=76924800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110379268.0A Active CN113175752B (en) | 2021-04-08 | 2021-04-08 | Filter screen filth blockage detection method for gas heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113175752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484886B (en) * | 2022-02-18 | 2023-08-08 | 广州迪森家居环境技术有限公司 | Zero cold water control method with preheating overtemperature protection and control device thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440330A (en) * | 2016-08-22 | 2017-02-22 | 广东万家乐燃气具有限公司 | Gas water heater, gas hot water system, and gas water heater preheating method |
| CN209263326U (en) * | 2018-10-30 | 2019-08-16 | 广东万和热能科技有限公司 | Intelligent maintainance prewarning fully pre-mixing gas combustion wall-hung boiler |
| CN111664573A (en) * | 2020-07-08 | 2020-09-15 | 珠海格力电器股份有限公司 | Anti-freezing control method and device for gas water heater |
| CN112361611B (en) * | 2020-11-05 | 2021-10-26 | 珠海格力电器股份有限公司 | Gas water heater control method, device and system and gas water heater |
-
2021
- 2021-04-08 CN CN202110379268.0A patent/CN113175752B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113175752A (en) | 2021-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113175752B (en) | Filter screen filth blockage detection method for gas heating equipment | |
| CN110220313A (en) | Gas water heater control method and gas water heater | |
| CN110220314A (en) | Gas water heater control method and gas water heater | |
| JP6101180B2 (en) | Water heater | |
| JP2021004697A (en) | Water heater and hot water supply system | |
| CN111912093B (en) | Hot water supply system and water heater | |
| CN115111771A (en) | Hot water supply device, method of controlling hot water supply device | |
| KR20040106651A (en) | Hot Water Supply System | |
| CN112254332B (en) | Water heater, control method thereof and computer readable storage medium | |
| KR20040106653A (en) | Hot Water Supply System | |
| CN111912092B (en) | Hot water supply system and water heater | |
| JPH09101027A (en) | Abnormal combustion discriminating device | |
| JP6716908B2 (en) | Water heater | |
| JPH07294007A (en) | Detecting device of leak in drain cock of water heater | |
| KR101635897B1 (en) | Water leakage blocking of the boiler and water heater with a flow control valve | |
| CN111912091B (en) | Hot water supply system and water heater | |
| CN109945505B (en) | Wall-hanging stove control method for preventing water shortage due to misinformation and wall-hanging stove | |
| KR100472066B1 (en) | Oil boiler's initial temperature export hot water temperature control device and method | |
| JP3532757B2 (en) | Gas combustion equipment and method for preventing erroneous shutoff of gas | |
| KR20040106652A (en) | Hot Water Supply System | |
| JP2022097966A (en) | Gas burning apparatus | |
| KR950000934B1 (en) | Heating method of gas boiler | |
| CN115711491A (en) | Control method of zero-cold-water gas water heater | |
| CN116642272A (en) | Control method of gas water heating system and gas water heating system | |
| JPH07294004A (en) | Detecting device of leak in drain cock of water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |