CN116412533A - Water heater and water heater control method - Google Patents

Water heater and water heater control method Download PDF

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Publication number
CN116412533A
CN116412533A CN202111678916.9A CN202111678916A CN116412533A CN 116412533 A CN116412533 A CN 116412533A CN 202111678916 A CN202111678916 A CN 202111678916A CN 116412533 A CN116412533 A CN 116412533A
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China
Prior art keywords
water
temperature
heating device
water temperature
target
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CN202111678916.9A
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Chinese (zh)
Inventor
陈小平
黄炜锴
吴锦文
赖春华
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Yunmi Internet Technology Guangdong Co Ltd
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Yunmi Internet Technology Guangdong Co Ltd
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Priority to CN202111678916.9A priority Critical patent/CN116412533A/en
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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
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes 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
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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

Abstract

The embodiment of the application discloses a water heater and a water heater control method, wherein the water heater comprises: the inner container is provided with a water inlet and a water outlet, and the water inlet is connected with a cold water pipeline; the heating device is arranged in the inner container and is used for heating water in the inner container; the first water inlet end of the thermostatic valve is connected with the cold water pipeline, the second water inlet end of the thermostatic valve is connected with the water outlet, and the thermostatic valve is used for mixing water input by the first water inlet end with water input by the second water inlet end; the instant heating device is connected with the water outlet end of the thermostatic valve and is used for heating water output by the thermostatic valve so as to output hot water with the temperature being the first target water temperature. The water output by the thermostatic valve is heated through the instant heating device, and the user directly uses the water output by the instant heating device, so that the utilization rate of hot water is improved.

Description

Water heater and water heater control method
Technical Field
The application relates to the technical field of water heaters, in particular to a water heater and a water heater control method.
Background
The existing water storage type water heater is usually used for heating water in the inner container in advance, preserving heat after heating to a higher temperature, mixing the hot water in the inner container with cold water through the thermostatic valve when water is needed, and outputting bath water with the temperature meeting the use requirements of users. However, when the external temperature is low, the water temperature in the inner container is easy to quickly drop, so that the water temperature in the inner container can not meet the use requirement of a user when the user needs water, and the heating device in the inner container needs to be repeatedly started, so that the utilization rate of the hot water is low.
Disclosure of Invention
The application provides a water heater and a water heater control method, which are used for carrying out secondary heating on water output from an inner container through an instant heating device and solving the problem of low water utilization rate of the existing water heater.
In a first aspect, the present application provides a water heater comprising:
the inner container is provided with a water inlet and a water outlet, and the water inlet is connected with a cold water pipeline;
the heating device is arranged in the inner container and is used for heating water in the inner container;
the first water inlet end of the thermostatic valve is connected with the cold water pipeline, the second water inlet end of the thermostatic valve is connected with the water outlet, and the thermostatic valve is used for mixing water input by the first water inlet end with water input by the second water inlet end;
the instant heating device is connected with the water outlet end of the thermostatic valve and is used for heating water output by the thermostatic valve so as to output hot water with the temperature being the first target water temperature.
In a second aspect, the present application provides a water heater control method, the method comprising:
acquiring a preset first target water temperature;
acquiring water flow input into the instant heating device;
determining a second target water temperature of hot water input into the instant heating device according to the preset heating power of the instant heating device, the first target water temperature and the water flow input into the instant heating device;
and controlling the state of the thermostatic valve according to the second target water temperature so that the thermostatic valve outputs hot water with the water temperature being the second target water temperature to the instant heating device.
The application discloses water heater and control method, this water heater includes: the inner container is provided with a water inlet and a water outlet, and the water inlet is connected with a cold water pipeline; the heating device is arranged in the inner container and is used for heating water in the inner container; the first water inlet end of the thermostatic valve is connected with the cold water pipeline, the second water inlet end of the thermostatic valve is connected with the water outlet, and the thermostatic valve is used for mixing water input by the first water inlet end with water input by the second water inlet end; the instant heating device is connected with the water outlet end of the thermostatic valve and is used for heating water output by the thermostatic valve so as to output hot water with the temperature being the first target water temperature. The instant heating device is used for heating the water output by the inner container through the constant temperature valve, so that a user can directly use the hot water heated by the instant heating device, and the utilization rate of the hot water is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a water heater according to an embodiment of the present disclosure;
FIG. 2 is a schematic block diagram of a control device provided in an embodiment of the present application
FIG. 3 is a schematic view of another water heater according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of another water heater according to an embodiment of the present disclosure;
FIG. 5 is a schematic flow chart of steps of a water heater control method provided in an embodiment of the present application;
FIG. 6 is a schematic flow chart of steps of another water heater control method provided by an embodiment of the present application;
FIG. 7 is a schematic flow chart of steps of another water heater control method provided by an embodiment of the present application;
FIG. 8 is a schematic flow chart of steps of another water heater control method provided in an embodiment of the present application.
Reference numerals illustrate:
10. a water heater; 100. an inner container; 110. a water inlet; 120. a water outlet; 130. a cold water pipe; 140. a heating device; 150. a thermostatic valve; 160. a heating device; 170. a temperature sensor; 180. a water flow sensor.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings, and the following examples and features of the examples may be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a water heater according to an embodiment of the present application.
As shown in fig. 1, the water heater 10 comprises a liner 100, wherein a water inlet 110 and a water outlet 120 are arranged on the liner 100, the water inlet 110 is connected with a cold water pipeline 130, and a heating device 140 is arranged in the liner 100; the water heater 10 further comprises a thermostatic valve 150 and an instant heating device 160, wherein a first water inlet end of the thermostatic valve 150 is connected with the cold water pipeline 130, a second water inlet end of the thermostatic valve 150 is connected with the water outlet 120 of the liner 100, and a water outlet end of the thermostatic valve 150 is connected with the instant heating device 160.
Wherein the heating device 140 is used for heating water in the liner 100.
The thermostatic valve 150 is used for mixing the water inputted from the first water inlet end with the water inputted from the second water inlet end, i.e., the thermostatic valve 150 is used for mixing the water inputted from the cold water pipe 130 with the water inputted from the inner container 100.
I.e., the heating device 160 is used to heat the water output from the thermostatic valve 150 to output hot water having a temperature of the first target water temperature.
The heating device 160 directly outputs hot water having a higher temperature, for example, hot water having a first target water temperature, by heating hot water having a lower temperature, for example, hot water having a second target water temperature, thereby avoiding heat loss during heating and maintaining the temperature of water in the liner 100 by the heating device 140, and further improving the utilization rate of hot water.
In some embodiments, the water heater 10 further comprises a control device (not shown) electrically connected to the heating device 140, the thermostatic valve 150, and the instant heating device 160 for determining a second target water temperature of the hot water input to the instant heating device 160 according to a preset heating power of the instant heating device 160, a preset first target water temperature, and a water flow rate input to the instant heating device 160; and controlling the state of the thermostat valve 150 according to the second target water temperature such that the thermostat valve 150 outputs hot water having the water temperature of the second target water temperature to the instant heating device 160.
Referring to fig. 2, fig. 2 is a schematic block diagram of a control device according to an embodiment of the present application.
As shown in fig. 2, the control device includes at least a memory 11, a processor 12, and a communication interface 14, which are connected by a system bus 13. The processor 12 may be a central processing unit (Central Processing Unit, CPU), the processor 12 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 11 stores various computer programs such as an operating system and application programs for execution by the processor 12 and data necessary for execution of the computer programs. During the water heater control process, data stored locally may be stored in the memory 11 if needed. The communication interface 14 may be any communication protocol known so far, the communication interface 14 communicates with the outside through a network, and the control device may transmit data with any device connected through the network through the communication interface 14 in a preset communication protocol.
Illustratively, the controlling means determines a second target water temperature of the hot water input 160 to the instant heating device according to the preset heating power of the instant heating device 160, the preset first target water temperature, and the water flow input to the instant heating device 160, comprising: according to
Figure BDA0003453365220000051
Determining a second target water temperature, wherein T 1 Represents a first target water temperature, T 2 The second target water temperature is represented, P represents the preset heating power of the instant heating device 160, V represents the water flow rate input into the instant heating device 160, and C represents the water flow rateShowing the specific heat capacity of water.
The control device calculates the second target water temperature, and controls the thermostatic valve 150 to output hot water with the temperature being the second target water temperature according to the second target water temperature, so that the instant heating device 160 heats the water output by the thermostatic valve 150 to the first target water temperature according to the preset heating power for a user to use, heat loss in the process of directly heating the water in the liner 100 to the first target water temperature and preserving heat is avoided, and the utilization rate of the hot water is improved.
In some embodiments, the water heater 10 further comprises: the temperature sensor 170 is disposed in the liner 100 and electrically connected to the control device, and the temperature sensor 170 is used for detecting the water temperature of the liner in the liner 100, so that the control device controls the heating device 140 according to the water temperature of the liner. Specifically, when the water temperature of the inner container is less than the preset water temperature threshold, the heating device 140 is controlled to heat the water in the inner container 100; when the water temperature of the inner container is greater than the preset water temperature threshold, the heating device 140 is controlled to stop heating the water in the inner container 100. The water temperature threshold value can be set according to actual requirements.
Referring to fig. 3 and 4, fig. 3 and 4 are schematic structural diagrams of another water heater according to an embodiment of the present application.
Illustratively, the water flow sensor 180 is electrically connected to the control device, and the water flow rate of the input heat sink 160 is sensed by the water flow sensor 180 so that the control device determines the second target water temperature based on the water flow rate of the input heat sink 160.
In some embodiments, as shown in FIG. 3, a water flow sensor 180 is connected to the water outlet end of the thermostatic valve 150; detecting water flow to the instant heating device 160 by the water flow sensor 180 includes: the water flow rate output from the thermostat valve 150 is detected by a water flow rate sensor 180.
In some embodiments, the water flow sensor 180 is capable of detecting the water flow output from the water outlet of the thermostatic valve 150, i.e., the water flow input to the instant heating device 160.
The water flow sensor 180 is arranged at the water outlet end of the thermostatic valve 150, so that the influence of temperature change on the hot water volume can be avoided, the water flow flowing through the instant heating device 160 can be more accurately determined, the water quantity required to be heated by the instant heating device 160 can be further more accurately determined, and the accuracy of the second target water temperature determined later is improved.
In some embodiments, as shown in FIG. 4, a water flow sensor 180 is connected with the cold water pipe 130; detecting water flow to the instant heating device 160 by the water flow sensor 180 includes: the water flow rate of the cold water pipe 130 is detected by the water flow rate sensor 180.
In some embodiments, the water flow sensor 180 is capable of detecting the water flow through the water heater 10 via the cold water conduit 130, and it is understood that the water flow of the cold water conduit 130 includes the water flow input to the bladder 100 via the water inlet 110 and the water flow input to the thermostatic valve 140, and that the water flow of the cold water conduit 130 is equal to the sum of the water flow output from the bladder 100 via the water outlet 120 and the water flow input to the thermostatic valve 150, i.e., the sum of the water flow input to the thermostatic valve 150, i.e., the water flow input to the instant heating device 160, due to the equal water flow input to the bladder 100 via the water inlet 110 and the water flow output from the bladder 100 via the water outlet 120.
The water flow sensor 180 is arranged on the cold water pipeline 130, so that demagnetization, demagnetization or scale generation of the sensor caused by long-term flowing of hot water with higher temperature through the water flow sensor 180 can be prevented, and the service life of the water flow sensor 180 is prolonged.
By way of example, the water heater provided by the present application heats the hot water with low temperature output by the thermostatic valve 150 through the instant heating device 160, directly outputs the hot water meeting the water demand of the user, and can avoid the heat lost in the process of directly heating the water in the liner 100 to a high temperature and preserving heat through the heating device 140, so that the user can directly use the hot water heated by the instant heating device, and further improve the utilization rate of the hot water.
Referring to fig. 5, fig. 5 is a schematic flowchart illustrating steps of a water heater control method according to an embodiment of the present application. As shown in fig. 5, the water heater control method includes steps S101 to S104.
Step S101, acquiring a preset first target water temperature.
The first target water temperature can be flexibly set according to actual requirements.
In some embodiments, the first target water temperature may be set by the user according to actual water demand. For example, the user may input the first target water temperature through a water temperature adjustment interface provided on the water heater, or set the first target water temperature through a water temperature adjustment button provided on the water heater, or may input the first target water temperature through a voice acquisition device provided on the water heater; for another example, the user may set the first target water temperature through an intelligent mobile terminal communicatively connected to the water heater, which is not limited herein.
Step S102, acquiring water flow input into the instant heating device.
Illustratively, the water flow rate input to the instant heating device is obtained by a water flow rate sensor.
The water flow rate of the input instant heating device may be obtained at intervals of a preset time period, the preset time period may be set according to actual requirements, for example, the preset time period may be set to 2 seconds, the water flow rate of the input instant heating device may be obtained at intervals of 2 seconds, which is not limited to this, for example, the preset time period may be set to 0, and the water flow rate of the input instant heating device may be obtained without interruption, which is not limited herein.
The water flow sensor may be disposed at the water outlet end of the thermostatic valve, or may be disposed in a cold water pipe, which is not limited thereto, and may be disposed at other positions where the water flow input to the instant heating device can be obtained, which is not limited thereto.
Step S103, determining a second target water temperature of hot water input into the instant heating device according to the preset heating power of the instant heating device, the first target water temperature and the water flow input into the instant heating device.
The second target water temperature of the hot water input into the instant heating device, namely, the second target water temperature of the hot water output by the thermostatic valve is determined according to the preset heating power of the instant heating device, the first target water temperature and the water flow input into the instant heating device, so that the temperature of the hot water output by the thermostatic valve is the second target water temperature, and the hot water output by the thermostatic valve is heated to the first target water temperature through the instant heating device at the preset heating power.
In some embodiments, determining a second target water temperature of the hot water input to the instant heating device based on the preset heating power of the instant heating device, the preset first target water temperature, and the water flow rate input to the instant heating device comprises: according to
Figure BDA0003453365220000081
Determining a second target water temperature, wherein T 1 Represents a first target water temperature, T 2 The second target water temperature is represented, P represents the preset heating power of the instant heating device, V represents the water flow rate input into the instant heating device, and C represents the specific heat capacity of water.
By means of the method, the preset heating power of the instant heating device, the preset first target water temperature and the preset water flow of the instant heating device are calculated, the second target water temperature of the hot water input into the instant heating device is directly obtained, so that the hot water with the output temperature of the thermostatic valve being the second target water temperature is controlled, complexity of determining the second target water temperature is reduced, and accuracy of water outlet of the water heater is improved.
Step S104, according to the second target water temperature, controlling the state of the thermostatic valve so that the thermostatic valve outputs hot water with the water temperature being the second target water temperature to the instant heating device.
The thermostatic valve can mix water input by the first water inlet end and the second water inlet end to output hot water with the temperature being the second target water temperature, so that the instant heating device can heat the hot water output by the thermostatic valve, the instant heating device can directly output hot water with the temperature being the first target water temperature, the water use requirement of a user is met, and the utilization rate of the hot water is improved.
In some embodiments, controlling the state of the thermostatic valve according to the second target water temperature to cause the thermostatic valve to output hot water having a water temperature of the second target water temperature to the instant heating device includes: and adjusting the water inflow of the first water inlet end and the second water inlet end according to the second target water temperature so that the water outlet end of the thermostatic valve outputs hot water with the water temperature being the second target water temperature.
The thermostatic valve can adjust the cold water inflow amount in the cold water pipeline input by the first water inlet end and the hot water inflow amount in the liner input by the second water inlet end according to a required preset temperature, such as a second target water temperature, mix the cold water input by the first water inlet end and the hot water input by the second water inlet end, and output water with a preset temperature, such as hot water with a temperature of the second target water temperature.
Referring to fig. 6, fig. 6 is a schematic flowchart illustrating steps of another water heater control method according to an embodiment of the present application.
As shown in fig. 6, in some embodiments, the water heater control method further includes steps S105-S106: step 105, controlling a heating device to heat water in the inner container, and acquiring the water temperature of the inner container through a temperature sensor; and S106, if the water temperature of the inner container is larger than a preset water temperature threshold value, controlling the heating device to stop heating, wherein the water temperature threshold value is larger than a second target water temperature.
For example, in order for the thermostatic valve to be able to output hot water at a second target water temperature, it is necessary to preheat the water in the bladder. Specifically, the water temperature threshold may be preset according to actual requirements. In order to prevent the hot water in the inner container from being quickly cooled after being heated, a lower water temperature threshold value can be set, for example, the water temperature threshold value can be set to 35 ℃, cold water entering the inner container is heated, and when the temperature sensor detects that the water temperature of the inner container reaches 35 ℃, the heating device is closed, so that the water in the inner container is insulated. Of course, the water temperature threshold value is not limited thereto, and may be set to other values, and is not limited thereto.
By preheating the water in the inner container to reach the preset water temperature threshold, the situation that the instant heating device is insufficient for heating the water temperature to the first target water temperature due to the fact that the first target temperature is too high or the water flow input into the instant heating device is too large is prevented, and the use experience of a user is improved.
For example, since the water temperature threshold is greater than the second target water temperature, the thermostatic valve can obtain hot water having a temperature of the second target water temperature by mixing hot water in the inner container with cold water in the cold water pipe.
Referring to fig. 7, fig. 7 is a schematic flowchart of steps of another water heater control method according to an embodiment of the present application.
As shown in fig. 7, in some embodiments, the water heater control method further includes step S107: and acquiring the cold water temperature of the cold water pipeline, and controlling the heating device to stop heating if the cold water temperature is greater than the water temperature threshold.
For example, the tap water temperature in the cold water pipe in summer may generally reach 38 ℃, at which time the tap water temperature in the cold water pipe may be above a preset temperature threshold, without preheating by the heating device in the liner. Specifically, the cold water temperature may be obtained by providing a temperature sensor at the water inlet, which is not limited thereto, and may be provided at the first water inlet end of the thermostatic valve or in the cold water pipe, which is not limited thereto.
Referring to fig. 8, fig. 8 is a schematic flow chart illustrating steps of another water heater control method according to an embodiment of the present application.
As shown in fig. 8, in some embodiments, the water heater control method further includes steps S108 to S109: if the water temperature of the inner container is larger than the first target water temperature, controlling the instant heating device to stop heating the water output by the thermostatic valve; the state of the thermostatic valve is controlled according to the first target water temperature so that the thermostatic valve outputs hot water with the water temperature being the first target water temperature.
For example, if the first target water temperature set by the user is lower, so that the water temperature of the liner preheated by the heating device in the liner is greater than the first target water temperature, the liner is not required to be heated again by the instant heating device, and the water flow of the first water inlet end and the second water inlet end is directly controlled by the thermostatic valve, so that the thermostatic valve outputs hot water with the temperature being the first target water temperature.
It is to be understood that the terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments. While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A water heater, the water heater comprising:
the inner container is provided with a water inlet and a water outlet, and the water inlet is connected with a cold water pipeline;
the heating device is arranged in the inner container and is used for heating water in the inner container;
the first water inlet end of the thermostatic valve is connected with the cold water pipeline, the second water inlet end of the thermostatic valve is connected with the water outlet, and the thermostatic valve is used for mixing water input by the first water inlet end with water input by the second water inlet end;
the instant heating device is connected with the water outlet end of the thermostatic valve and is used for heating water output by the thermostatic valve so as to output hot water with the temperature being the first target water temperature.
2. The water heater of claim 1, further comprising a control device,
the control device is electrically connected with the heating device, the constant temperature valve and the instant heating device, and is used for determining a second target water temperature of hot water input into the instant heating device according to preset heating power of the instant heating device, preset first target water temperature and water flow input into the instant heating device; and
and controlling the state of the thermostatic valve according to the second target water temperature so that the thermostatic valve outputs hot water with the water temperature being the second target water temperature to the instant heating device.
3. The water heater of claim 2, further comprising a water flow sensor,
the water flow sensor is connected with the water outlet end of the constant temperature valve, the water flow output by the constant temperature valve is detected through the water flow sensor, and the water flow sensor is electrically connected with the control device.
4. The water heater of claim 2, further comprising a temperature sensor,
the temperature sensor is arranged in the inner container and used for detecting the water temperature of the inner container in the inner container, and the temperature sensor is electrically connected with the control device.
5. A water heater control method, the method comprising:
acquiring a preset first target water temperature;
acquiring water flow input into the instant heating device;
determining a second target water temperature of hot water input into the instant heating device according to the preset heating power of the instant heating device, the first target water temperature and the water flow input into the instant heating device;
and controlling the state of the thermostatic valve according to the second target water temperature so that the thermostatic valve outputs hot water with the water temperature being the second target water temperature to the instant heating device.
6. The water heater control method according to claim 5, wherein the determining the second target water temperature of the hot water input to the instant heating device according to the preset heating power of the instant heating device, the first target water temperature, and the water flow rate input to the instant heating device includes:
according to
Figure FDA0003453365210000021
Determining the second target water temperature, wherein T 1 Representing the first target water temperature, T 2 And (3) representing the second target water temperature, wherein P represents the preset heating power of the instant heating device, V represents the water flow of the input instant heating device, and C represents the specific heat capacity of water.
7. The water heater control method according to claim 5, wherein before controlling the state of the thermostat valve so that the thermostat valve outputs hot water having a water temperature of the second target water temperature to the instant heating device according to the second target water temperature, further comprising:
controlling a heating device to heat water in the inner container of the water heater, and acquiring the water temperature of the inner container through a temperature sensor;
and if the water temperature of the inner container is larger than a preset water temperature threshold, controlling the heating device to stop heating, wherein the water temperature threshold is larger than the second target water temperature.
8. The water heater control method of claim 7, further comprising:
acquiring cold water temperature of a cold water pipeline, and controlling the heating device to stop heating if the cold water temperature is greater than the water temperature threshold;
and controlling the state of the thermostatic valve according to the second target water temperature so that the thermostatic valve outputs hot water with the water temperature being the second target water temperature to the instant heating device.
9. The water heater control method of claim 7, further comprising:
if the water temperature of the inner container is larger than the first target water temperature, controlling the instant heating device to stop heating the water output by the thermostatic valve;
and controlling the state of the thermostatic valve according to the first target water temperature so that the thermostatic valve outputs hot water with the water temperature being the first target water temperature.
10. The water heater control method according to claim 5, wherein the controlling the state of the thermostat valve according to the second target water temperature so that the thermostat valve outputs hot water having a water temperature of the second target water temperature to the instant heating device includes:
and adjusting the water inflow of the first water inlet end and the second water inlet end of the thermostatic valve according to the second target water temperature so that the water outlet end of the thermostatic valve outputs hot water with the water temperature being the second target water temperature.
CN202111678916.9A 2021-12-31 2021-12-31 Water heater and water heater control method Pending CN116412533A (en)

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Application Number Priority Date Filing Date Title
CN202111678916.9A CN116412533A (en) 2021-12-31 2021-12-31 Water heater and water heater control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111678916.9A CN116412533A (en) 2021-12-31 2021-12-31 Water heater and water heater control method

Publications (1)

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CN116412533A true CN116412533A (en) 2023-07-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111678916.9A Pending CN116412533A (en) 2021-12-31 2021-12-31 Water heater and water heater control method

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