CN106546003B - Water heater control method and water heater - Google Patents

Water heater control method and water heater Download PDF

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CN106546003B
CN106546003B CN201510594034.2A CN201510594034A CN106546003B CN 106546003 B CN106546003 B CN 106546003B CN 201510594034 A CN201510594034 A CN 201510594034A CN 106546003 B CN106546003 B CN 106546003B
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temperature
water heater
bathing
user
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CN106546003A (en
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陈小雷
杨平
张斌
薛祥玉
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Qingdao Economic And Technology Development District Haier Water Heater Co ltd
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Qingdao Economic And Technology Development District Haier Water Heater Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

本发明涉及一种热水器控制方法及热水器,用户设置洗浴时间和洗浴温度,热水器主控板根据用户设置的洗浴时间和洗浴温度计算热水器内胆内的水至少需要的温度,并控制内胆内的水至少达到该温度。本发明用户依据自己的需要,直接设置洗浴时间和洗浴温度。由热水器计算加热温度,更精确地为用户提供适量的热水,从而也更加节能。本发明更加直观的反映用户的需求,从而避免了用户在洗浴过程中热水量不够用或者热水量过多造成浪费的情况发生。用户可以将自己最直接的想法设置到热水器内,实现了热水器人性化的设置模式。

The invention relates to a water heater control method and the water heater. The user sets the bathing time and bathing temperature, and the main control board of the water heater calculates the minimum required temperature of the water in the inner tank of the water heater according to the bathing time and bathing temperature set by the user, and controls the water temperature in the inner tank. The water is at least at that temperature. In the present invention, the user directly sets the bathing time and bathing temperature according to his own needs. The heating temperature is calculated by the water heater, and the right amount of hot water is provided to the user more accurately, thereby saving energy. The present invention more intuitively reflects the needs of users, thereby avoiding the situation that the amount of hot water is not enough or the amount of hot water is too much to cause waste during the bathing process of the user. Users can set their most direct ideas into the water heater, realizing the humanized setting mode of the water heater.

Description

一种热水器控制方法及热水器Water heater control method and water heater

技术领域technical field

本发明涉及热水器领域,尤其是一种热水器控制方法及热水器。The invention relates to the field of water heaters, in particular to a water heater control method and the water heater.

背景技术Background technique

现有热水器一般为用户在使用热水器之前需对温度进行设置,加热到设置温度后停止加热,进入保温。该种温度控制方式的热水器存在以下问题:温度不能代表用户的第一需求:用户只知道,温度越高,热水输出量越多。但是,60℃的热水到底能输出多少热水,够几个人使用,对于绝大多数用户而言,这是难以估算的。用户并不能直观的得到能够维持的洗浴时间。Existing water heaters generally require the user to set the temperature before using the water heater, stop heating after heating to the set temperature, and enter heat preservation. The water heater with this temperature control method has the following problems: the temperature cannot represent the first demand of the user: the user only knows that the higher the temperature, the more hot water output. However, for most users, it is difficult to estimate how much hot water can be output by 60°C hot water, which is enough for several people. The user cannot intuitively obtain the bathing time that can be maintained.

申请号201310107668.1的专利公开一种热水器,包括太阳能热水器、电热水器、热泵热水器,能显示剩余热水的洗浴时间的热水器及其程序编制方法。在热水器的内胆各处设置1—60个内胆温度传感器1,其中内胆顶部可以设置1个内胆温度传感器1,在内胆进水管处设置进水温度传感器2,流量传感器有2种设置方案,方案一、在内胆进水管处或出水管处设置流量传感器1,方案二、从进水管处接管和电动流量调节阀连接到出水管,再接流量传感器2,所述的流量传感器可以是霍尔流量传感器或红外线流量传感器,流量传感器测量进水或出水流量,将电信号数据传送给单片机芯片,各温度传感器的温度信号也传到单片机芯片,按所述程序计算方法进行计算,得到热水洗浴时间T,显示在显示屏上,即能准确计算并显示热水器中剩余热水还能洗浴的时间。但是上述专利仍然存在问题:用户只是能够得到内胆内的热水能够维持的洗浴时间,但是并不能对洗浴时间进行设置,当用户需要更长的洗浴时间时,上述热水器并不能满足用户的需求,用户只能试着将热水器的加热温度设置的更高一些,但也不知道具体应该设置多少,所以用户并不能明确的设置自己的指示。The patent application number 201310107668.1 discloses a water heater, including a solar water heater, an electric water heater, a heat pump water heater, a water heater capable of displaying the bathing time of remaining hot water, and a programming method thereof. Set 1-60 inner tank temperature sensors 1 everywhere in the inner tank of the water heater. One inner tank temperature sensor 1 can be installed on the top of the inner tank, and the water inlet temperature sensor 2 can be installed at the water inlet pipe of the inner tank. There are two kinds of flow sensors Setting plan, plan 1, install flow sensor 1 at the water inlet pipe or outlet pipe of the inner tank, plan 2, connect the pipe from the water inlet pipe and the electric flow regulating valve to the water outlet pipe, and then connect the flow sensor 2, the flow sensor It can be a Hall flow sensor or an infrared flow sensor. The flow sensor measures the water inlet or outlet flow, and transmits the electrical signal data to the single-chip microcomputer chip, and the temperature signals of each temperature sensor are also transmitted to the single-chip microcomputer chip, and the calculation is performed according to the calculation method of the program. The hot water bathing time T is obtained and displayed on the display screen, which can accurately calculate and display the remaining hot water bathing time in the water heater. However, there are still problems in the above-mentioned patent: the user can only obtain the bathing time that the hot water in the inner tank can maintain, but cannot set the bathing time. When the user needs a longer bathing time, the above-mentioned water heater cannot meet the needs of the user , the user can only try to set the heating temperature of the water heater higher, but does not know how much it should be set, so the user cannot clearly set his own instructions.

鉴于此提出本发明。In view of this, the present invention is proposed.

发明内容Contents of the invention

本发明的目的为克服现有技术的不足,提供一种热水器的控制方法和热水器,用户可以设置洗浴时间。The object of the present invention is to overcome the deficiencies of the prior art, and provide a water heater control method and the water heater, and the user can set the bathing time.

为了实现该目的,本发明采用如下技术方案:一种热水器的控制方法,用户设置洗浴时间和洗浴温度,热水器主控板根据用户设置的洗浴时间和洗浴温度计算热水器内胆内的水至少需要的温度,并控制内胆内的水至少达到该温度。In order to achieve this purpose, the present invention adopts the following technical solution: a water heater control method, the user sets the bathing time and bathing temperature, and the main control board of the water heater calculates at least the water in the inner tank of the water heater according to the bathing time and bathing temperature set by the user temperature, and control the water in the liner to at least reach this temperature.

用户设置洗浴时间Twash和洗浴温度twash;The user sets the bathing time Twash and bathing temperature twash;

热水器检测进冷水的温度tcold和洗浴时喷头处出水流量vflow;The water heater detects the temperature tcold of the incoming cold water and the water flow vflow at the nozzle when bathing;

所述热水器计算内胆内的水至少需要的温度tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank,所述Vtank为热水器内胆容量;The water heater calculates at least the temperature tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank required by the water in the inner tank, and the Vtank is the capacity of the inner tank of the water heater;

热水器控制内胆的水至少达到该tx温度。The water heater controls the water in the liner to at least reach the tx temperature.

所述热水器检测内胆内水的温度,若检测的内胆内水的温度大于或等于计算得到的tx,提醒用户加热完成进入保温,若检测的内胆内水的温度小于计算得到的tx,启动加热将内胆内的水加热至tx后提醒用户加热完成进入保温。The water heater detects the temperature of the water in the inner tank. If the detected temperature of the water in the inner tank is greater than or equal to the calculated tx, the user is reminded to complete the heating and enter the heat preservation process. If the detected temperature of the water in the inner tank is lower than the calculated tx, Start the heating to heat the water in the inner tank to tx, and then remind the user to enter the heat preservation after the heating is completed.

所述洗浴时喷头处出水流量vflow为用户上次洗浴时热水器检测到的喷头处的水流流量,或者所述洗浴时喷头处出水流量vflow为用户多次洗浴时热水器检测到的喷头处的水流流量取平均值。The water flow vflow at the nozzle during bathing is the water flow at the nozzle detected by the water heater when the user took a bath last time, or the water flow vflow at the nozzle during bathing is the water flow at the nozzle detected by the water heater when the user took multiple baths take the average.

所述进冷水的温度tcold为热水器检测到的进水管处冷水的温度,或者所述进冷水的温度tcold为用户多次洗浴时热水器检测到的进水管处冷水的温度取平均值。The temperature tcold of the incoming cold water is the temperature of the cold water at the water inlet pipe detected by the water heater, or the temperature tcold of the incoming cold water is the average value of the temperature of the cold water at the water inlet pipe detected by the water heater when the user takes multiple baths.

一种上述控制方法的的热水器,包括外壳、内胆、加热管、主控板和输入界面,所述输入界面至少包括洗浴时间输入界面和洗浴温度输入界面。A water heater according to the above-mentioned control method includes a casing, an inner container, a heating pipe, a main control board and an input interface, and the input interface includes at least a bathing time input interface and a bathing temperature input interface.

所述热水器还包括温度传感器,所述温度传感器至少包括设置在内胆内的第一温度传感器,设置在进水管的第二温度传感器。The water heater also includes a temperature sensor, the temperature sensor at least includes a first temperature sensor arranged in the inner tank, and a second temperature sensor arranged in the water inlet pipe.

所述热水器还包括流量传感器,所述流量传感器至少包括检测喷头处水流流量的第一流量传感器。The water heater also includes a flow sensor, and the flow sensor includes at least a first flow sensor for detecting the water flow at the spray head.

采用本发明所述的技术方案后,带来以下有益效果:After adopting the technical scheme described in the present invention, bring following beneficial effect:

1、本发明用户依据自己的需要,直接设置洗浴时间和洗浴温度。由热水器计算加热温度,更精确地为用户提供适量的热水,从而也更加节能。1. In the present invention, users can directly set the bathing time and bathing temperature according to their own needs. The heating temperature is calculated by the water heater, and the right amount of hot water can be provided to the user more accurately, thereby saving energy.

2、本发明更加直观的反映用户的需求,从而避免了用户在洗浴过程中热水量不够用或者热水量过多造成浪费的情况发生。2. The present invention more intuitively reflects the needs of users, thereby avoiding the situation that the amount of hot water is not enough or the amount of hot water is too much to cause waste during the bathing process of the user.

3、本发明用户可以将自己最直接的想法设置到热水器内,实现了热水器人性化的设置模式。3. In the present invention, users can set their most direct ideas into the water heater, realizing the humanized setting mode of the water heater.

下面结合附图对本发明的具体实施方式作进一步详细的描述。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

附图说明Description of drawings

图1:本发明控制方法流程图Fig. 1: flow chart of control method of the present invention

图2:本发明热水器结构示意图Figure 2: Schematic diagram of the structure of the water heater of the present invention

其中:1、内胆,2、混水阀,3、喷头,4、进水管,5、出水管,6、洗浴时间输入界面和,7、洗浴温度输入界面,8、主控板,9、第一温度传感器,10、第二温度传感器,11、第一流量传感器。Among them: 1. Inner tank, 2. Water mixing valve, 3. Nozzle, 4. Water inlet pipe, 5. Water outlet pipe, 6. Bathing time input interface and, 7. Bathing temperature input interface, 8. Main control board, 9. The first temperature sensor, 10, the second temperature sensor, 11, the first flow sensor.

具体实施方式Detailed ways

本发明所述一种热水器的控制方法,用户设置洗浴时间和洗浴温度,热水器主控板根据用户设置的洗浴时间和洗浴温度计算热水器内胆内的水至少需要的温度,并控制内胆内的水至少达到该温度。用户只知道,内胆内水的温度越高,热水输出量越多。但是,60℃或50℃的水到底能输出多少热水,够几个人使用,能够洗多长时间,对于绝大多数用户而言,这是难以估算的。所以内胆内水的温度并不是直接与用户相关的,用户也不会用内胆内温度的水进行洗浴,用户洗浴时是内胆内的水在混水阀与冷水混合至合适的温度后进行洗浴的,而对于用户洗浴来说,洗浴时间和洗浴时水的温度是用户最直接相关的参数,所以也是用户最需要输入至热水器的参数,用户依据自己的需要,直接设置洗浴时间和洗浴温度,由热水器计算加热温度,更精确地为用户提供适量的热水,从而也更加节能,而不是用户直接设置热水器所要的参数再估算自己最想得到的参数。According to the control method of the water heater in the present invention, the user sets the bathing time and bathing temperature, and the main control board of the water heater calculates the minimum required temperature of the water in the inner tank of the water heater according to the bathing time and bathing temperature set by the user, and controls the water temperature in the inner tank. The water is at least at that temperature. The user only knows that the higher the temperature of the water in the inner tank, the more hot water output. However, for most users, it is difficult to estimate how much hot water can be output by water at 60°C or 50°C, how many people can use it, and how long it can be used for washing. Therefore, the temperature of the water in the inner tank is not directly related to the user, and the user will not bathe with the water at the inner temperature of the inner tank. When the user takes a bath, the water in the inner tank is mixed with cold water to the appropriate temperature For bathing, for users to bathe, bathing time and water temperature are the most directly related parameters for users, so they are also the parameters that users most need to input into the water heater. Users can directly set bathing time and bathing time according to their own needs. Temperature, the heating temperature is calculated by the water heater, which can provide users with the right amount of hot water more accurately, and thus save more energy, instead of users directly setting the parameters required by the water heater and then estimating the parameters they want most.

具体步骤:Specific steps:

如图1所示,用户设置洗浴时间Twash和洗浴温度twash;As shown in Figure 1, the user sets the bathing time Twash and bathing temperature twash;

热水器检测进冷水的温度tcold和洗浴时喷头处出水流量vflow;The water heater detects the temperature tcold of the incoming cold water and the water flow vflow at the nozzle when bathing;

所述热水器计算内胆内的水至少需要的温度tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank,所述Vtank为热水器内胆容量;The water heater calculates at least the temperature tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank required by the water in the inner tank, and the Vtank is the capacity of the inner tank of the water heater;

热水器控制内胆的水至少达到该tx温度。The water heater controls the water in the liner to at least reach the tx temperature.

热水器检测内胆内水的温度,若检测的内胆内水的温度大于或等于计算得到的tx,说明此时内胆内的水就足以满足用户设置的洗浴时间,直接提醒用户加热完成进入保温,若检测的内胆内水的温度小于计算得到的tx,启动加热将内胆内的水加热至tx后提醒用户加热完成进入保温。The water heater detects the temperature of the water in the inner tank. If the detected temperature of the water in the inner tank is greater than or equal to the calculated tx, it means that the water in the inner tank is enough to meet the bathing time set by the user at this time, and directly reminds the user to complete the heating and enter the heat preservation , if the detected temperature of the water in the inner tank is lower than the calculated tx, start heating to heat the water in the inner tank to tx, and then remind the user to enter the heat preservation after the heating is completed.

根据能量守恒:洗浴用水能量=热水能量+冷水能量,即C*Mwash*twash=C*Mx*tx+C*Mcold*tcold。According to energy conservation: bathing water energy = hot water energy + cold water energy, that is, C*Mwash*twash=C*Mx*tx+C*Mcold*tcold.

用户设置了洗浴时间Twash和洗浴温度twash,热水器能检测进冷水的温度tcold和洗浴时喷头处出水流量vflow;C为水的比热容,为常量4.2×103J/(kg℃),Mwash是用户洗澡用水的总质量,用户洗澡用水的总质量可以通过用户洗澡的时间和用户洗澡时水的流量和水的密度三者的乘积求得,即Twash*vflow*ρ,twash为洗浴温度,前面提到是用户自己设置的,Mx是内胆内热水的质量,而对于一个热水器内胆的容积Vtank是一定的,由热水器型号决定,该数据出厂前已内置热水器中,所以内胆内热水的质量可以通过内胆的容积和水的密度二者的乘积求得,即Vtank*ρ,Mcold是用户洗澡过程中冷水质量,而用户洗浴时是内胆内的水在混水阀与冷水混合至合适的温度后进行洗浴的,用户洗澡过程中冷水质量可以通过用户用水的总质量与内胆中的水的质量二者的差求得,即(Twash*vflow*ρ—Vtank*ρ),tcold是热水器检测的,由C*Mwash*twash=C*Mx*tx+C*Mcold*tcold,可得到C*Twash*vflow*ρ*twash=C*Vtank*ρ*tx+C*(Twash*vflow*ρ—Vtank*ρ)*tcold。The user sets the bathing time Twash and the bathing temperature twash, the water heater can detect the temperature tcold of the incoming cold water and the flow rate vflow of the water outlet at the nozzle during bathing; C is the specific heat capacity of water, which is a constant 4.2×10 3 J/(kg℃), and Mwash is the user The total mass of bathing water and the total mass of user’s bathing water can be obtained from the product of the user’s bathing time and the water flow and water density during bathing, that is, Twash*vflow*ρ, twash is the bathing temperature, as mentioned above To be set by the user, Mx is the quality of hot water in the inner tank, and the volume Vtank of a water heater inner tank is certain, determined by the water heater model, this data has been built into the water heater before leaving the factory, so the hot water in the inner tank The quality of the tank can be obtained by the product of the volume of the inner tank and the density of the water, that is, Vtank*ρ, and Mcold is the quality of the cold water in the user's bathing process, and the water in the inner tank is mixed with cold water at the mixing valve when the user is bathing To take a bath after reaching an appropriate temperature, the quality of cold water during the user’s bathing process can be obtained by the difference between the total mass of water used by the user and the mass of water in the inner tank, that is, (Twash*vflow*ρ—Vtank*ρ), tcold is detected by the water heater. From C*Mwash*twash=C*Mx*tx+C*Mcold*tcold, C*Twash*vflow*ρ*twash=C*Vtank*ρ*tx+C*(Twash* vflow*ρ—Vtank*ρ)*tcold.

上式中只有内胆内的水温tx是未知的,可求得tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank,上述过程中忽略温度对水密度的影响。In the above formula, only the water temperature tx in the inner tank is unknown, and tx=[Twash*vflow*twash—(Twash*vflow—Vtank)*tcold]/Vtank can be obtained, and the influence of temperature on water density is ignored in the above process.

当用户设置的时候喷头处正在出水,此时热水器可以直接检测喷头处出水的流量,往往有时候用户设置的时候喷头处没有出水,此时检测不到喷头处出水流量vflow,这时候所述洗浴时喷头处出水流量vflow可以取用户上次洗浴时热水器检测到的喷头处的水流流量,一般用户都有自己的习惯,所以直接取用户上次洗浴时热水器检测到的喷头处的水流流量即可,更准确的所述洗浴时喷头处出水流量vflow可以取用户多次洗浴时热水器检测到的喷头处的水流流量取平均值。When the user sets the water flow from the nozzle, the water heater can directly detect the flow of water from the nozzle. Sometimes when the user sets the water flow from the nozzle, the water flow vflow from the nozzle cannot be detected. At this time, the bathing The water flow vflow at the nozzle can be taken from the water flow at the nozzle detected by the water heater when the user took a bath last time. Generally, users have their own habits, so directly take the water flow at the nozzle detected by the water heater when the user took a bath last time. More accurately, the water flow rate vflow at the nozzle during bathing may be an average value of the water flow rate at the nozzle detected by the water heater during multiple baths by the user.

当用户设置的时候喷头处正在出水,进水管正在进水,此时热水器可以直接检测进水管处冷水的温度,同上所述,往往有时候用户设置的时候喷头处没有出水,进水管也不会进水,所述进冷水的温度tcold为热水器检测到的上次洗浴时进水管处冷水的温度,或者更准确的所述进冷水的温度tcold为用户多次洗浴时热水器检测到的进水管处冷水的温度取平均值。When the user sets the settings, water is coming out from the nozzle and water is entering the water inlet pipe. At this moment, the water heater can directly detect the temperature of the cold water at the water inlet pipe. Incoming water, the temperature tcold of the incoming cold water is the temperature of the cold water at the water inlet pipe detected by the water heater during the last bath, or more accurately, the temperature tcold of the incoming cold water is the temperature at the water inlet pipe detected by the water heater when the user takes multiple baths The temperature of the cold water is averaged.

如图2所示,本发明所述具有上述控制方法的的热水器,包括外壳12、内胆1、加热管13、主控板8和输入界面,所述输入界面至少包括洗浴时间输入界面6和洗浴温度输入界面7。用户可以通过洗浴时间输入界面6和洗浴温度输入界面7设置洗浴时间和洗浴温度。As shown in Figure 2, the water heater with the above-mentioned control method according to the present invention includes a casing 12, an inner tank 1, a heating pipe 13, a main control board 8 and an input interface, and the input interface at least includes a bathing time input interface 6 and Bath temperature input interface 7. The user can set the bathing time and bathing temperature through the bathing time input interface 6 and the bathing temperature input interface 7 .

所述热水器还包括温度传感器,所述温度传感器至少包括设置在内胆1内的第一温度传感器9,设置在进水管4的第二温度传感器10。所述热水器还包括流量传感器,所述流量传感器至少包括检测喷头处水流流量的第一流量传感器11。The water heater also includes a temperature sensor, and the temperature sensor includes at least a first temperature sensor 9 arranged in the inner tank 1 and a second temperature sensor 10 arranged in the water inlet pipe 4 . The water heater also includes a flow sensor, and the flow sensor at least includes a first flow sensor 11 for detecting the water flow at the nozzle.

以上所述仅为本发明的优选实施方式,应当指出,对于本领域的普通技术人员而言,在不脱离本发明原理前提下,还可以做出多种变形和改进,这也应该视为本发明的保护范围。The above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, various modifications and improvements can be made, which should also be regarded as the present invention. protection scope of the invention.

Claims (7)

1. a kind of water heater control method, it is characterised in that: user setting bathing time and bathing temperature, water heater master control borad root According to the temperature that the water in the bathing time and bathing temperature computation water heater liner of user setting at least needs, and control in liner Water be at least up to the temperature, including the following steps:
User setting bathing time Twash and bathing temperature twash;
Water flow vflow at spray head when water heater is detected into the temperature tcold of cold water and bathing;
The water heater calculates the temperature tx=[Twash*vflow*twash-(Twash* that the water in liner at least needs Vflow-Vtank) * tcold]/Vtank, the Vtank is water heater liner capacity;
The water of water heater control liner is at least up to the tx temperature.
2. water heater control method according to claim 1, it is characterised in that: the temperature of water in the water heater detection liner Degree reminds user to heat and completes to enter heat preservation, if inspection if the temperature of water is greater than or equal to the tx being calculated in the liner of detection The temperature of water is less than the tx being calculated in the liner of survey, and the water in liner is heated to reminding user's heating after tx by starting heating It completes to enter heat preservation.
3. water heater control method according to claim 1 or 2, it is characterised in that: go out water flow when the bathing at spray head Go out at spray head when measuring the water flow or the bathing at the spray head that water heater detects when vflow is the bathing of user's last time The water flow at spray head that water heater detects when water flow vflow is user's multiple bathing is averaged.
4. water heater control method according to claim 1 or 2, it is characterised in that: the temperature tcold into cold water is The heat when temperature of cold water or the temperature tcold into cold water are user's multiple bathing at the water inlet pipe that water heater detects The temperature of cold water is averaged at the water inlet pipe that hydrophone detects.
5. a kind of water heater using any control method of claim 1-4, including shell, liner, heating tube, master control borad And input interface, it is characterised in that: the input interface includes at least bathing time input interface and bathing temperature input interface.
6. a kind of water heater according to claim 5, it is characterised in that: the water heater further includes temperature sensor, institute It states temperature sensor and includes at least the first temperature sensor being arranged in liner, the second temperature sensing of water inlet pipe is set Device.
7. a kind of water heater according to claim 5 or 6, it is characterised in that: the water heater further includes flow sensor, The flow sensor includes at least the first flow sensor of water flow at detection spray head.
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