CN110017598B - Control method of electric water heater and electric water heater - Google Patents
Control method of electric water heater and electric water heater Download PDFInfo
- Publication number
- CN110017598B CN110017598B CN201810018580.5A CN201810018580A CN110017598B CN 110017598 B CN110017598 B CN 110017598B CN 201810018580 A CN201810018580 A CN 201810018580A CN 110017598 B CN110017598 B CN 110017598B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 488
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 91
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/185—Water-storage heaters using electric energy supply
-
- 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
- F24H9/0005—Details for water heaters
- F24H9/0042—Cleaning arrangements
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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
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a control method of an electric water heater, which comprises the steps of detecting the actual water inlet temperature in a water inlet pipe, detecting the actual water outlet temperature in a hot water pipe, detecting the actual water outlet temperature in a water outlet pipe at the same time, determining a first difference value between the actual water outlet temperature and the actual water inlet temperature and a second difference value between the water outlet temperature value of a preset water outlet pipe and the actual water inlet temperature, obtaining the actual total water outlet amount of the water outlet pipe according to the proportional relation between the first difference value and the second difference value, comparing the actual total water outlet amount of the water outlet pipe with the preset total water outlet amount of the water outlet pipe to obtain the actual service life of a filter device, judging whether the actual service life of the filter device is larger than or equal to the preset service life of the filter device, and if so, sending out service life prompt information of the filter device. The control method can send out prompt information to prompt a user, so that the filtering device can be treated in time to ensure the water quality of water flowing out of the water outlet pipe.
Description
Technical Field
The invention relates to the field of electric water heaters, in particular to a control method of an electric water heater and the electric water heater.
Background
With the continuous improvement of living standard of people, people pursue higher and higher living quality, people are not only concerned about the quality of drinking water, but also about the influence of water of electric water heater bathing water on people. Therefore, how to improve the water quality of the bath water of the electric water heater is a technical problem to be solved.
Disclosure of Invention
The invention provides a control method of an electric water heater and the electric water heater.
The control method of the electric water heater according to the embodiment of the invention can be used in the electric water heater according to the embodiment of the invention, the electric water heater comprises a water inlet pipe, a liner, a hot water pipe, a connecting pipe, a water outlet pipe, a water mixing valve and a filtering device, the liner is connected with the water inlet pipe and the hot water pipe, the water mixing valve is connected with the hot water pipe, the water outlet pipe and the connecting pipe, the connecting pipe is connected with the water inlet pipe and the water mixing valve, the filtering device is arranged on the water outlet pipe, and the filtering device is used for filtering water flowing through the water outlet pipe, and the control method of the electric water heater is characterized by comprising the following steps:
s1: starting the electric water heater, judging whether the water mixing valve is in an open state, and if the water mixing valve is in the open state, entering a step S2;
s2: judging whether the flow in the filtering device is larger than a preset flow, if so, entering a step S3, otherwise, returning to the step S2;
s3: collecting the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe, determining a first difference value between the actual hot water temperature and the actual water inlet temperature and a second difference value between the water outlet temperature of a preset water outlet pipe and the actual water inlet temperature, obtaining the actual total water outlet amount of the water outlet pipe according to the proportional relation between the first difference value and the second difference value, comparing the actual total water outlet amount of the water outlet pipe with the preset total water outlet amount of the water outlet pipe to obtain the actual service life of the filtering device, and judging whether the actual service life of the filtering device is larger than or equal to the preset service life of the filtering device;
if yes, entering a step S4, otherwise, returning to the step S3;
s4: and sending out service life prompt information of the filtering device.
In the control method of the electric water heater, the filtering device can filter water in the water outlet pipe, so that the water quality of the water flowing out of the water outlet pipe can be improved, and after the actual service life of the filtering device reaches the preset service life, the control method can send out prompt information to prompt a user, so that the filtering device can be treated (for example, the filtering device is replaced) in time, and the water quality of the water flowing out of the water outlet pipe is ensured.
In certain embodiments, the step S2 includes: judging whether the flow in the filtering device is larger than the preset flow or not after the time that the water mixing valve is in the open state is the preset time.
In certain embodiments, the predetermined time period is greater than or equal to 2 seconds and less than or equal to 5 seconds.
In some embodiments, if the flow rate in the filtering device is greater than the preset flow rate, the control method includes step S5 between step S2 and step S3: judging whether the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, if so, entering a step S3, otherwise, adjusting the flow in the hot water pipe, and returning to the step S2.
In certain embodiments, the step S4 comprises: sending service life prompt information of the filtering device to a preset terminal so that the preset terminal prompts the service life of the filtering device.
The electric water heater comprises a water inlet pipe, a liner, a hot water pipe, a connecting pipe, a water outlet pipe, a water mixing valve, a filtering device and a controller, wherein the controller is electrically connected with the water mixing valve, the liner is connected with the water inlet pipe and the hot water pipe, the water mixing valve is connected with the hot water pipe, the water outlet pipe and the connecting pipe, the connecting pipe is connected with the water inlet pipe and the water mixing valve, the filtering device is arranged on the water outlet pipe, and the filtering device is used for filtering water flowing through the water outlet pipe;
when the electric water heater is in an on state, the controller is used for:
judging whether the water mixing valve is in an open state or not, and judging whether the flow in the filtering device is greater than a preset flow or not when the water mixing valve is in the open state;
determining a first difference value between the actual hot water temperature and the actual water inlet temperature and a second difference value between the water outlet temperature of a preset water outlet pipe and the actual water inlet temperature according to the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe, obtaining the actual total water outlet of the water outlet pipe according to the proportional relation between the first difference value and the second difference value, comparing the actual total water outlet of the water outlet pipe with the preset total water outlet of the water outlet pipe to obtain the actual service life of the filtering device, and judging whether the actual service life of the filtering device is larger than or equal to the preset service life of the filtering device;
and sending out service life prompt information of the filtering device when the actual service life of the filtering device is longer than or equal to the preset service life of the filtering device.
In the electric water heater, the filtering device can filter water in the water outlet pipe, so that the water quality of the water flowing out of the water outlet pipe can be improved, and after the actual service life of the filtering device reaches the preset service life, the control method can send out prompt information to prompt a user, so that the filtering device can be treated (for example, the filtering device is replaced) in time, and the water quality of the water flowing out of the water outlet pipe is ensured.
In some embodiments, the controller is configured to determine whether the flow rate in the filtering device is greater than the preset flow rate after the time when the water mixing valve is in the open state is a preset duration.
In certain embodiments, the predetermined time period is greater than or equal to 2 seconds and less than or equal to 5 seconds.
In some embodiments, the electric water heater includes a hot water valve body disposed on the hot water pipe, the controller is electrically connected to the hot water valve body, and the controller is configured to:
when the flow in the filtering device is greater than the preset flow, judging whether the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, collecting the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe when the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, controlling the opening of the hot water valve body to adjust the flow in the hot water pipe when the water outlet temperature in the water outlet pipe does not reach the water outlet temperature of the preset water outlet pipe, and continuously judging whether the flow in the filtering device is greater than the preset flow.
In some embodiments, the controller is configured to send a service life prompting message of the filtering device to a preset terminal, so that the preset terminal prompts the service life of the filtering device.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of an electric water heater according to an embodiment of the present invention.
Fig. 2 is a schematic block diagram of an electric water heater according to an embodiment of the present invention.
Fig. 3 is a flow chart of a control method of an electric water heater according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a user interface of a preset terminal according to an embodiment of the present invention.
Description of main reference numerals:
an electric water heater 100;
the water inlet pipe 11, the inner container 12, the hot water pipe 13, the connecting pipe 14, the water outlet pipe 15, the water mixing valve 16, the filtering device 17, the first temperature sensor 18, the second temperature sensor 19, the third temperature sensor 20, the controller 21, the flow sensor 22, the hot water valve body 30 and the preset terminal 200.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element 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 invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1 to 4, the control method of the electric water heater according to the embodiment of the present invention may be used for the electric water heater 100 according to the embodiment of the present invention.
The electric water heater 100 comprises a water inlet pipe 11, an inner container 12, a hot water pipe 13, a connecting pipe 14, a water outlet pipe 15, a water mixing valve 16 and a filtering device 17. The inner container 12 is connected with the water inlet pipe 11 and the hot water pipe 13. The water mixing valve 16 is connected with the hot water pipe 13, the water outlet pipe 15 and the connecting pipe 14. The connection pipe 14 connects the water inlet pipe 11 and the mixing valve 16. The filter 17 is provided at the outlet pipe 15. The filter 17 is used to filter the water flowing through the outlet pipe 15. The control method of the electric water heater comprises the following steps:
s1: turning on the electric water heater 100, judging whether the water mixing valve 16 is in an open state, and if the water mixing valve 16 is in the open state, entering step S2;
s2: judging whether the flow in the filter device 17 is greater than a preset flow, if so, entering a step S3, otherwise, returning to the step S2;
s3: collecting an actual water inlet temperature T1 in the water inlet pipe 11, an actual hot water temperature T2 in the hot water pipe 13 and an actual water outlet temperature T3 in the water outlet pipe 15, determining a first difference value between the actual hot water temperature T2 and the actual water inlet temperature T1 and a second difference value between the water outlet temperature T4 of the preset water outlet pipe and the actual water inlet temperature T1, obtaining an actual total water outlet L1 of the water outlet pipe 15 according to a proportional relation between the first difference value and the second difference value, comparing the actual total water outlet L1 of the water outlet pipe 15 with a preset total water outlet L2 of the water outlet pipe 15 to obtain the actual service life of the filter device 17, and judging whether the actual service life of the filter device 17 is larger than or equal to the preset service life of the filter device 17;
if yes, entering a step S4, otherwise, returning to the step S3;
s4: and sends out service life prompt information of the filtering device 17.
In the control method of the electric water heater, the filter device 17 can filter the water in the water outlet pipe 15, so that the water quality of the water flowing out of the water outlet pipe 15 can be improved, and after the actual service life of the filter device 17 reaches the preset service life, the control method can send out prompt information to prompt a user, so that the filter device 17 can be treated (for example, the filter device 17 is replaced) in time, so that the water quality of the water flowing out of the water outlet pipe 15 is ensured.
In this embodiment, the filter 17 comprises a filter cartridge for removing chlorine from water.
It should be noted that the preset flow rate may be set according to a specific situation, and in one example, the first preset flow rate may be set to 2L/min. The preset outlet temperature T4 of the outlet pipe may be set according to specific situations, for example, in some examples, the preset outlet temperature T4 of the outlet pipe may be set between 38-42 degrees (for example, may be set to 40 degrees) so as to be fit with the comfortable temperature of the human body for bathing. In addition, the hot water flowing out of the hot water pipe 13 and the cold water flowing in through the connection pipe 14 may be mixed in the mixing valve 16, and the mixed hot water and cold water may be discharged from the water outlet pipe 15 for a user when the mixing valve 16 is in an opened state. Cold water for the connection pipe 14 may be provided by the water inlet pipe 11.
Furthermore, the actual total water output L1 is positively correlated with the service life of the filter device 17, and when the actual total water output L1 reaches the preset total water output L2, the service life of the filter device 17 will reach the preset service life. Moreover, when the service life of the filtering device 17 reaches the preset service life, the filtering function of the filtering device 17 on water is greatly reduced, and even the effective filtering capability cannot be achieved. Therefore, when the service life of the filter device 17 reaches or exceeds the preset service life, key components (e.g., filter elements) in the filter device 17 should be replaced in time to ensure the filtering capability of the filter device 17.
In addition, the inner container 12 is connected with the water inlet pipe 11 and the hot water pipe 13, so that the inner container 12, the water inlet pipe 11 and the hot water pipe 13 form a communicating vessel as a whole. Therefore, the flow rate at each cross section in the liner 12 is equal to the flow rate at each cross section in the water inlet pipe 11 and the flow rate at each cross section in the hot water pipe 13.
In certain embodiments, step S1 comprises: after the electric water heater 100 is turned on, the variable is initialized, and it is further determined whether the water mixing valve 16 is in an open state. That is, the accuracy of the control method can be ensured by initializing the flow data in the filter 17 and the temperature data in each pipe (including the water inlet pipe, the hot water pipe, and the water outlet pipe) and then judging whether the water mixing valve 16 is in the open state.
In step S1, when the water mixing valve 16 is in the closed state, the process returns to the step of initializing the variable.
In the present embodiment, the electric water heater 100 includes a first temperature sensor 18, a second temperature sensor 19, a third temperature sensor 20, a flow sensor 22, and a controller 21. The controller 21 is electrically connected to the mixing valve 16, the flow sensor 22, the first temperature sensor 18, the second temperature sensor 19, and the third temperature sensor 20. The first temperature sensor 18 is provided to the inlet pipe 11. The second temperature sensor 19 is provided to the hot water pipe 13. The third temperature sensor 20 is provided at the outlet pipe 15. The first temperature sensor 18 is used to detect the actual inlet water temperature T1 in the inlet pipe 11. The second temperature sensor 19 is used to detect the actual hot water temperature T2 inside the hot water pipe 13. The third temperature sensor 20 is used for detecting the actual outlet water temperature T3 in the outlet pipe 15. The flow sensor 22 is used to detect the flow Q in the inlet pipe 11.
The controller 21 may collect corresponding temperature and flow data via the first temperature sensor 18, the second temperature sensor 19, the third temperature sensor 20, and the flow sensor 22. It will be appreciated that the temperature and flow data of the electric water heater may also be entered by a user or detected by a sensor external to the electric water heater. In this case, the electric water heater 100 may omit the first temperature sensor 18, the second temperature sensor 19, the third temperature sensor 20, and the flow sensor 22.
When the electric water heater 100 is in the on state, the controller 21 is configured to determine whether the water mixing valve 16 is in the on state, determine whether the flow rate in the filtering device 17 is greater than a preset flow rate when the water mixing valve 16 is in the on state, determine a first difference between the actual water inlet temperature T2 and the actual water inlet temperature T1 according to the actual water inlet temperature T1 in the water inlet pipe 11 and the actual water inlet temperature T2 in the hot water pipe 13 when the flow rate in the filtering device 17 is greater than the preset flow rate, determine a second difference between the water outlet temperature T4 of the preset water outlet pipe and the actual water inlet temperature T1, and obtain an actual total water outlet L1 of the water outlet pipe 15 according to a proportional relationship between the first difference and the second difference, and compare the actual total water outlet L1 of the water outlet pipe 15 with the preset total water outlet L2 of the water outlet pipe 15 to obtain an actual service life of the filtering device 17, and be configured to determine whether the actual service life of the filtering device 17 is greater than or equal to the preset service life of the filtering device 17 when the actual service life of the filtering device 17 is greater than or equal to the preset service life of the filtering device 17. In this way, it is only necessary to provide the flow sensor 22 at the water inlet pipe 11 to detect the flow rate at the water inlet pipe 11, and it is not necessary to provide the flow sensor 22 at the hot water pipe 13 or the water outlet pipe 15 at a higher temperature. This reduces the cost and ensures the accuracy of the detection of the flow sensor 22.
Further, in the present embodiment, according to the heat balance principle, the actual total water output L1 satisfies the following calculation formula:
L1＝(T2-T1)/(T4-T1)*Q
in this way, the accuracy of obtaining the actual service life of the filter device 17 from the actual total water output L1 of the water outlet pipe 15 by calculation is higher than estimating the service life of the filter device 17 by detecting the flow Q in the water inlet pipe 11 only by the flow sensor 22 to cumulatively obtain the actual total water input into the liner 12.
In certain embodiments, step S2 comprises: after the time when the mixing valve 16 is in the open state is a preset time period, it is determined whether the flow rate in the filter 17 is greater than the preset flow rate.
In this way, when the mixing valve 16 is in the open state, the accuracy of the judgment performed by the control system of the electric water heater 100 can be improved through time delay. This effectively ensures that the control system of the overall electric water heater 100 will not be subject to false positives. For example, if the water supply pressure is low or the water supply is stopped during the actual use, after the water mixing valve 16 is in the open state, the actual water flow in the water outlet pipe 15 is very low or even no water flows out, and at this time, due to the delay function of the preset duration, the control system of the electric water heater 100 will not immediately perform the following steps (for example, collecting the actual water inlet temperature T1 in the water inlet pipe 11 and the actual hot water temperature T2 in the hot water pipe 13), so that the control system of the electric water heater 100 can be prevented from accumulating the actual service life of the filtering device 17 when the actual water outlet amount of the water outlet pipe 15 is very low or no water flows out, thereby causing deviation in operation.
In the present embodiment, the controller 21 is configured to determine whether the flow rate in the filter device 17 is greater than a preset flow rate after the time in which the mixing valve 16 is in the open state is a preset time period.
In certain embodiments, the predetermined time period is greater than or equal to 2 seconds and less than or equal to 5 seconds. Thus, the preset time is moderate, which is beneficial for the control system of the electric water heater 100 to accurately judge the flow in the water outlet pipe 15.
In some examples, the preset duration is 2s, 3s, 4s, or 5s.
In the present embodiment, the controller 21 is configured to determine whether the flow rate in the filter device 17 is greater than a preset flow rate after the time in which the mixing valve 16 is in the open state is a preset time period.
In some embodiments, if the flow rate in the filtering device 17 is greater than the preset flow rate, the control method includes step S5 between step S2 and step S3: judging whether the water outlet temperature in the water outlet pipe 15 reaches the preset water outlet temperature T4 of the water outlet pipe, if so, entering the step S3, otherwise, adjusting the flow in the hot water pipe 13, and returning to the step S2. Thus, when the water outlet temperature in the water outlet pipe 15 reaches the preset water outlet temperature T4 of the water outlet pipe, that is, the actual water outlet temperature in the water outlet pipe 15 is close to or equal to the preset water outlet temperature T4 of the water outlet pipe, the step S2 is performed to collect corresponding temperature and flow data. When the water outlet temperature in the water outlet pipe 15 does not reach the preset water outlet temperature T4 of the water outlet pipe, the water outlet temperature in the water outlet pipe 15 can reach the preset water outlet temperature T4 of the water outlet pipe by adjusting the flow in the hot water pipe 13, so that the accuracy of the actual total water outlet obtained in the step S3 can be prevented from being reduced due to the fact that the actual water outlet temperature in the water outlet pipe 15 is greatly different from the preset water outlet temperature T4 of the water outlet pipe.
Specifically, when the water outlet temperature in the water outlet pipe 15 is smaller than the preset water outlet temperature T4 of the water outlet pipe, the flow in the hot water pipe 13 can be increased to increase the proportion of hot water in the mixed water in the water mixing valve 16, so that the water outlet temperature in the water outlet pipe 15 reaches the preset water outlet temperature T4 of the water outlet pipe. When the water outlet temperature in the water outlet pipe 15 is greater than the preset water outlet temperature T4 of the water outlet pipe, the flow in the hot water pipe 13 can be reduced to reduce the proportion of hot water in the mixed water in the water mixing valve 16, so that the water outlet temperature in the water outlet pipe 15 reaches the preset water outlet temperature T4 of the water outlet pipe.
In the present embodiment, the electric water heater 100 includes a hot water valve body 30 provided in the hot water pipe 13. The controller 21 is electrically connected to the hot water valve body 30. The controller 21 is configured to: when the flow rate in the filtering device 17 is greater than the preset flow rate, judging whether the water outlet temperature in the water outlet pipe 15 reaches the water outlet temperature T4 of the preset water outlet pipe, collecting the actual water inlet temperature T1 in the water inlet pipe 11 and the actual hot water temperature T2 in the hot water pipe 13 when the water outlet temperature in the water outlet pipe 15 reaches the water outlet temperature T4 of the preset water outlet pipe, controlling the opening of the hot water valve body 30 to adjust the flow rate in the hot water pipe 13 when the water outlet temperature in the water outlet pipe 15 does not reach the water outlet temperature T4 of the preset water outlet pipe, and continuously judging whether the flow rate in the filtering device 17 is greater than the preset flow rate.
Specifically, when the outlet water temperature in the outlet pipe 15 is smaller than the preset outlet water temperature T4 of the outlet pipe, the controller 21 can control the opening of the hot water valve body 30 to increase the flow rate in the hot water pipe 13 and increase the proportion of hot water in the mixed water in the water mixing valve 16, so that the outlet water temperature in the outlet pipe 15 reaches the preset outlet water temperature T4 of the outlet pipe. When the outlet temperature in the outlet pipe 15 is greater than the preset outlet temperature T4 of the outlet pipe, the controller 21 can control the opening of the hot water valve body 30 to decrease the flow in the hot water pipe 13 to decrease the proportion of hot water in the mixed water in the water mixing valve 16, so that the outlet temperature in the outlet pipe 15 reaches the preset outlet temperature T4 of the outlet pipe.
In addition, the hot water valve body 30 is located above the second temperature sensor 19. I.e. the hot water valve body 30 is closer to the inner container 12 than the second temperature sensor 19.
The controller 21 may control the opening degree of the hot water valve body 30 by a stepping motor. In certain embodiments, the step S4 comprises: the service life prompting information of the filtering device 17 is sent to the preset terminal 200 so that the preset terminal 200 prompts the service life of the filtering device 17. In this way, the user can prompt the service life of the filtering device 17 through the preset terminal 200 to timely know the use state of the filtering device 17, so that the user can be ensured to timely process.
In this embodiment, the controller 21 is configured to send a service life prompting message of the filtering device 17 to the preset terminal 200, so that the preset terminal 200 prompts the service life of the filtering device 17.
It should be noted that, the preset terminal 200 may be a mobile terminal or/and a wearable device, and the mobile terminal may be a mobile phone, for example. The wearable device may be, for example, a smart bracelet.
In some embodiments, the preset terminal 200 includes a display 201. The controller 21 is configured to send a service life prompting message of the filter device 17 to the preset terminal 200 to prompt the service life information of the filter device 17 by causing the preset terminal 200 to display the service life of the filter device 17 through the display screen 201. For example, as shown in fig. 4, the filter 17 includes a filter element for chlorine removal, and when the actual service life of the filter 17 reaches a preset service life, the display 201 may pop up a prompt box attached with relevant information such as "the filter element is exhausted" to prompt.
In addition, when the actual service life of the filtering device 17 does not reach the preset service life, the controller 21 may be configured to send a prompt message such as the quality of water to the preset terminal 200, and display the related message such as the quality of water in the liner 12 through the display 201.
It should be noted that, the user may download the APP of the electric water heater through the preset terminal 200, and obtain the service life prompt information and other relevant information of the filtering device 17 through the APP user interface.
In some embodiments, the controller 21 is configured to send information of the residual water flow rate of the liner 12 to the preset terminal 200 according to the detection result of the flow sensor 22, so as to display the information of the residual water flow rate of the liner 12 through the display screen 201. Thus, the user can timely know the residual hot water quantity condition in the inner container 12, and accordingly corresponding treatment can be timely performed.
In the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The control method of the electric water heater comprises a water inlet pipe, a liner, a hot water pipe, a connecting pipe, a water outlet pipe, a water mixing valve and a filtering device, wherein the liner is connected with the water inlet pipe and the hot water pipe, the water mixing valve is connected with the hot water pipe, the water outlet pipe and the connecting pipe, the connecting pipe is connected with the water inlet pipe and the water mixing valve, the filtering device is arranged on the water outlet pipe, and the filtering device is used for filtering water flowing through the water outlet pipe, and the control method of the electric water heater is characterized by comprising the following steps:
s1: starting the electric water heater, judging whether the water mixing valve is in an open state, and if the water mixing valve is in the open state, entering a step S2;
s2: judging whether the flow in the filtering device is larger than a preset flow, if so, entering a step S3, otherwise, returning to the step S2;
s3: collecting the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe, determining a first difference value between the actual hot water temperature and the actual water inlet temperature and a second difference value between the water outlet temperature of a preset water outlet pipe and the actual water inlet temperature, obtaining the actual total water outlet amount of the water outlet pipe according to the proportional relation between the first difference value and the second difference value, comparing the actual total water outlet amount of the water outlet pipe with the preset total water outlet amount of the water outlet pipe to obtain the actual service life of the filtering device, and judging whether the actual service life of the filtering device is larger than or equal to the preset service life of the filtering device;
if yes, entering a step S4, otherwise, returning to the step S3;
s4: and sending out service life prompt information of the filtering device.
2. The control method of an electric water heater according to claim 1, wherein the step S2 includes: judging whether the flow in the filtering device is larger than the preset flow or not after the time that the water mixing valve is in the open state is the preset time.
3. The control method of an electric water heater according to claim 2, wherein the preset time period is greater than or equal to 2 seconds and less than or equal to 5 seconds.
4. The control method of an electric water heater according to claim 1, wherein if the flow rate in the filtering device is greater than the preset flow rate, the control method includes step S5 between step S2 and step S3: judging whether the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, if so, entering a step S3, otherwise, adjusting the flow in the hot water pipe, and returning to the step S2.
5. The control method of an electric water heater according to claim 1, wherein the step S4 includes: sending service life prompt information of the filtering device to a preset terminal so that the preset terminal prompts the service life of the filtering device.
6. The electric water heater is characterized by comprising a water inlet pipe, an inner container, a hot water pipe, a connecting pipe, a water outlet pipe, a water mixing valve, a filtering device and a controller, wherein the controller is electrically connected with the water mixing valve, the inner container is connected with the water inlet pipe and the hot water pipe, the water mixing valve is connected with the hot water pipe, the water outlet pipe and the connecting pipe, the connecting pipe is connected with the water inlet pipe and the water mixing valve, the filtering device is arranged at the water outlet pipe, and the filtering device is used for filtering water flowing through the water outlet pipe;
when the electric water heater is in an on state, the controller is used for:
judging whether the water mixing valve is in an open state or not, and judging whether the flow in the filtering device is greater than a preset flow or not when the water mixing valve is in the open state;
determining a first difference value between the actual hot water temperature and the actual water inlet temperature and a second difference value between the water outlet temperature of a preset water outlet pipe and the actual water inlet temperature according to the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe, obtaining the actual total water outlet of the water outlet pipe according to the proportional relation between the first difference value and the second difference value, comparing the actual total water outlet of the water outlet pipe with the preset total water outlet of the water outlet pipe to obtain the actual service life of the filtering device, and judging whether the actual service life of the filtering device is larger than or equal to the preset service life of the filtering device;
sending out service life prompt information of the filtering device when the actual service life of the filtering device is longer than or equal to the preset service life of the filtering device;
the filter device comprises a filter element for removing chlorine in water.
7. The electric water heater of claim 6, wherein the controller is configured to determine whether the flow rate in the filter device is greater than the preset flow rate after the time the mixing valve is in the open state is a preset duration.
8. The electric water heater of claim 7, wherein the predetermined time period is greater than or equal to 2 seconds and less than or equal to 5 seconds.
9. The electric water heater of claim 6, wherein the electric water heater includes a hot water valve body disposed in the hot water pipe, the controller being electrically connected to the hot water valve body, the controller being configured to:
when the flow in the filtering device is greater than the preset flow, judging whether the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, collecting the actual water inlet temperature in the water inlet pipe and the actual hot water temperature in the hot water pipe when the water outlet temperature in the water outlet pipe reaches the water outlet temperature of the preset water outlet pipe, controlling the opening of the hot water valve body to adjust the flow in the hot water pipe when the water outlet temperature in the water outlet pipe does not reach the water outlet temperature of the preset water outlet pipe, and continuously judging whether the flow in the filtering device is greater than the preset flow.
10. The electric water heater of claim 6, wherein the controller is configured to send a service life indicator of the filter device to a predetermined terminal to cause the predetermined terminal to indicate the service life of the filter device.
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| CN201810018580.5A CN110017598B (en) | 2018-01-09 | 2018-01-09 | Control method of electric water heater and electric water heater |
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| CN201810018580.5A CN110017598B (en) | 2018-01-09 | 2018-01-09 | Control method of electric water heater and electric water heater |
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| CN110017598B true CN110017598B (en) | 2023-11-24 |
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| CN103836800A (en) * | 2012-11-20 | 2014-06-04 | 芜湖美的厨卫电器制造有限公司 | Electric water heater and control method thereof |
| CN205383291U (en) * | 2015-12-03 | 2016-07-13 | 青岛经济技术开发区海尔热水器有限公司 | Multi -functional intelligent valve body and water heater |
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| CN207778774U (en) * | 2018-01-09 | 2018-08-28 | 芜湖美的厨卫电器制造有限公司 | Electric heater |
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| US20120000858A1 (en) * | 2010-04-29 | 2012-01-05 | Andy Butler | Filter Life Pulsating Indicator and Water Filter System and Method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836800A (en) * | 2012-11-20 | 2014-06-04 | 芜湖美的厨卫电器制造有限公司 | Electric water heater and control method thereof |
| CN205383291U (en) * | 2015-12-03 | 2016-07-13 | 青岛经济技术开发区海尔热水器有限公司 | Multi -functional intelligent valve body and water heater |
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