WO2011006409A1 - Water heater and control method thereof - Google Patents

Water heater and control method thereof Download PDF

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Publication number
WO2011006409A1
WO2011006409A1 PCT/CN2010/073958 CN2010073958W WO2011006409A1 WO 2011006409 A1 WO2011006409 A1 WO 2011006409A1 CN 2010073958 W CN2010073958 W CN 2010073958W WO 2011006409 A1 WO2011006409 A1 WO 2011006409A1
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WO
WIPO (PCT)
Prior art keywords
temperature
water
temperature sensing
sensing element
water heater
Prior art date
Application number
PCT/CN2010/073958
Other languages
French (fr)
Chinese (zh)
Inventor
谭建明
张龙
熊建国
唐道轲
柳飞
陈忠杰
雍文涛
刘刚峰
袁明征
王芳
景仁坤
戴雄
张玉进
蒋金龙
Original Assignee
珠海格力电器股份有限公司
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Filing date
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Application filed by 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2011006409A1 publication Critical patent/WO2011006409A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021—Storage 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/176—Improving or maintaining comfort of users
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/223—Temperature of the water in the water storage tank
    • F24H15/225—Temperature of the water in the water storage tank at different heights of the tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/04—Sensors
    • F24D2220/042—Temperature sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2240/00—Characterizing positions, e.g. of sensors, inlets, outlets
    • F24D2240/26—Vertically distributed at fixed positions, e.g. multiple sensors distributed over the height of a tank, or a vertical inlet distribution pipe having a plurality of orifices

Definitions

  • a pressurized water tank is a common component of a water heater, which includes a box body and a temperature sensing element.
  • the existing pressurized water tank generally has only one temperature sensing element. When working, the temperature sensing element outputs the temperature signal sensed by the temperature sensing element.
  • the control circuit is configured to control whether the water heater is heated, and the temperature sensing component simultaneously displays and outputs the temperature signal sensed by the temperature sensing component, so that the user knows the temperature of the hot water in the water heater and the available hot water amount.
  • the characteristics of the water tank under pressure are:
  • the water tank is connected to the water pipe, so the water tank also bears the pressure in the water pipe, and there is always water in the water tank.
  • the cold water enters the tank from the hydration inlet and is heated, and then discharged from the hot water outlet, so that the water temperature in the interior of the tank is different, and a temperature from low to high is formed in the tank from bottom to top. field.
  • the traditional pressurized water tank has only one temperature sensing element, it is located in the middle of the water tank, which causes it to sense 4 degrees of ⁇ , which cannot accurately sense the water temperature inside the water tank, and can not accurately sense the remaining remaining inside the water tank.
  • the amount of hot water; ⁇ the inside of the cabinet clearly has hot water, and the hot water temperature shown is low, it is not convenient to control the water heater. Therefore, the temperature indicated by the pressure water tank used in the conventional water heater can sometimes not be consistent with the temperature display of the hot water outlet of the pressurized water tank.
  • the temperature of the temperature sensing element of the water tank The display is more H.
  • the user side line controller shows that the water temperature of the water tank is 4 , low, which causes the user to misunderstand the hot water production of the unit and the water temperature of the water tank.
  • the object of the present invention is to provide a water heater and a control method thereof, which can accurately sense the water temperature and the amount of hot water available inside the cabinet, so that the user can accurately understand the temperature and available heat of the hot water in the water heater. The amount of water.
  • a water heater comprising a pressure water tank, a hand-held device and a detection controller, wherein the pressure water tank comprises a box And a temperature sensing element disposed on the casing, a hot water outlet is disposed at an upper portion of the casing, and a water supply inlet is disposed at a lower portion of the casing; wherein the temperature sensing component is disposed on the casing
  • n where n is an integer > 2, there is a height difference between the mounting positions of two adjacent temperature sensing elements.
  • the detection controller is provided with a single-chip microcomputer, the detection controller includes a control circuit and a display circuit, and the control circuit includes a detection module, a determination module, and a module for controlling the start and stop of the unit; the detection module receives the temperature sensing element. The temperature signal and the temperature change signal, the judging module judges the temperature signal and the temperature change signal, and obtains that the water tank temperature and the water capacity information are sent to the display circuit and displayed in the handheld device; the module that controls the start and stop of the unit is based on the water tank temperature and Water capacity information to control the start and stop of compressors and other loads.
  • the method for controlling the water heater includes the steps of detecting the water temperature in the water tank while the water heater unit is running, specifically: Step 1: The water heater unit is started up; Step 2: detecting the temperature Tn of all the temperature sensing elements of the pressure water tank; Step 3 : Judging whether the temperature Ti of the temperature sensing element i (where l ⁇ i ⁇ n, i is an integer) for controlling the start and stop of the unit is less than the set temperature value T, ie:
  • Step 4 The water heater unit continues to run, and detect the resistance temperature change rate of the temperature sensing element; go to step 2; Step 5: Stop; Step 6: Continue It is judged whether the temperature Ti of the temperature sensing element i (where l ⁇ i ⁇ n, i is an integer) for controlling the start and stop of the unit is less than T set - ⁇ ⁇ ( ⁇ ⁇ > 0, which is the water temperature decrease value when the unit is restarted) , which is:
  • the temperature sensing elements mounted on the box are two, three or more, and the water of different water levels can be sensed separately, thereby improving the sense of temperature and available hot water.
  • the accuracy of the measurement is more convenient for control and use.
  • the beneficial effects of the present invention are as follows: The invention solves the problem that the user side water temperature display cannot reflect the temperature display of correctly reflecting the hot water outlet, and the real-time analysis determines the hot water capacity in the current water tank. The actual amount of actual hot water in the pressure tank is reflected in real time, and the humanized start and stop control is carried out according to the residual water volume and the current operation mode.
  • the advantages of the present invention are: increasing the number of temperature sensing elements, and accurately, optimally controlling and using the water heater by improving the sensing accuracy of the water temperature inside the cabinet, so as to provide comfortable living hot water for the user at the right time. Specifically:
  • the temperature sensing element with temperature-sensitive metal deformation rate is used for detection, which truly reflects the hot water outlet temperature of the water tank.
  • the temperature sensing element is cyclically detected by the single-chip microcomputer, and the current temperature value is updated in real time, and the temperature of each temperature sensing element detected can be analyzed and judged in real time.
  • the actual amount of actual hot water in the pressure tank is reflected in real time, and the humanized start and stop control is carried out according to the residual water volume and the current operation mode. In this way, it can be turned on in the optimal time, that is, the unit is prevented from starting too early, the hot and cold water in the water tank is mixed prematurely, the hot water production rate of the water tank is increased, and the unit is prevented from starting too late, and the heating time is too long.
  • FIG. 1 is a schematic flow chart showing a step of controlling a water tank temperature of a water heater according to a control method of a water heater according to the present invention
  • FIG. 2 is a flow chart showing a water capacity information detecting and determining step of a water heater control method of the present invention
  • the present invention discloses a water heater, as shown in FIG. 3, comprising a pressurized water tank, a hand-held device and a detection controller, wherein the pressurized water tank comprises a box body 1 and a temperature sensing device disposed on the box body 1
  • the component 2 has a hot water outlet 6 at an upper portion of the casing 1, and a water supply inlet 7 at a lower portion of the casing 1; wherein the temperature sensing elements 2 provided on the casing 1 are n Where n is an integer > 2, and there is a height difference between the mounting positions of two adjacent temperature sensing elements.
  • the detection controller is provided with a single-chip microcomputer, the detection controller includes a control circuit and a display circuit, and the control circuit includes a detection module, a determination module, and a module for controlling the start and stop of the unit; the detection module receives the temperature sensing element. The temperature signal and the temperature change signal, the judging module judges the temperature signal and the temperature change signal, and obtains that the water tank temperature and the water capacity information are sent to the display circuit and displayed in the handheld device; the module that controls the start and stop of the unit is based on the water tank temperature and Water capacity information to control the start and stop of compressors and other loads. The height distance values between the mounting positions of the adjacent two of the temperature sensing elements are equal.
  • a circulation outlet 8 and a circulation inlet 9 are arranged above the hydration inlet 7, and a magnesium rod is arranged in the tank 1 to absorb carbonate ions in the water to avoid scaling inside the tank body;
  • the hole 5, the temperature sensing element 2 - the port is inserted into the temperature detecting main board, and the port of the other temperature sensing probe is inserted into the jack 5 in the water tank, is fixed on the jack 5 and is located in the box 1 , preferably
  • the temperature sensing element 2 is six, at least one of which is electrically connected to the control circuit 3 and electrically connected to the display circuit 4, and the remaining temperature sensing element is electrically connected to the display circuit 4, and each temperature sensing element 2 corresponds to the up and down direction. Settings.
  • the temperature sensing element 2 mounted on the casing 1 is Six, the temperature sensing element 2 near the upper portion of the casing 1 is electrically connected to the display circuit 4, and the temperature sensing element 2 near the lower portion of the casing 1 is also electrically connected to the display circuit 4, and the temperature sensing element 2 located in the middle of the casing is both The electrical connection of the control circuit 3 is in turn electrically connected to the display circuit 4.
  • water of different water levels can be sensed separately, and the accuracy of temperature and available hot water sensing can be improved, so that accurate, optimal control and use of the water heater can be realized, and the user can provide comfortable domestic hot water at the right time.
  • the temperature sensing element 2 is a thermistor having a resistance value which changes with temperature, and corresponds to a resistance value at different temperatures, and the water temperature changes to cause a change in the resistance of the temperature sensing element of the water tank, thereby causing a voltage at the same current. Variety.
  • the control circuit detects such a voltage change signal, thereby knowing the change in the resistance value of the resistor, so that the corresponding temperature can be obtained, and the temperature sensing component model can be: 50K thermistor.
  • the above water heater control method comprises the steps of detecting the water temperature in the water tank while the water heater unit is running, as shown in FIG.
  • Step 1 The water heater unit is started up; Step 2: detecting the temperature of all the temperature sensing elements of the pressure water tank Tn; Step 3: Determine whether the temperature Ti of the i-th temperature sensing element (where l ⁇ i ⁇ n, i is an integer) for controlling the start and stop of the unit is less than the set temperature value T, that is:
  • Step 4 The water heater unit continues to run, and detect the resistance temperature of the temperature sensing element becomes ⁇ rate; go to step 2; Step 5: Stop; Step 6 : Continue to judge whether the temperature Ti of the i-th temperature sensing element (where l ⁇ i ⁇ n, i is an integer) for controlling the start and stop of the unit is less than T set - ⁇ ⁇ ( ⁇ ⁇ > 0, which is the water temperature when the unit starts again. Lower the value), ie:
  • the water heater control method includes: a water capacity information detection and determination step, specifically: Step 1: When the water heater unit is powered on, stopped, or standby, the detection is started; Step 2: Detect the temperature Tl of the first temperature sensing element located in the water tank from the top to the bottom, and determine whether T1 is less than the set temperature setting. If yes, go to step 3. If no, go to step 4; Step 3: Display the current hot water The capacity is 0%; Step 4: Detect the temperature of the second temperature sensing element ⁇ 2 from the top to the bottom of the water tank, and judge whether ⁇ 2 is less than the set temperature setting. If yes, go to step 5. If no, go to step 6; Step 5 : Shows the current hot water capacity as ⁇ %, ! % - - ⁇ 100 ;
  • Step ⁇ 8 The current hot water capacity is displayed as 100%. Because the water tank is distributed with two or more temperature sensing elements from bottom to top, the two adjacent temperature sensing elements on the water tank are the same from top to bottom. Therefore, each tank temperature sensing element detects a temperature. We detect the temperature of each point on the water tank every other fixed period. According to the temperature of the water tank from bottom to top, we get the bottom to top temperature of the water tank every other cycle. The distribution curve assumes that the water temperature is the set temperature, that is, the hot water, and because the distance between two adjacent temperature sensing elements on the water tank is constant, it is assumed that the water temperature of each temperature sensing element from top to bottom is obtained, thereby obtaining the actual temperature in the water tank. The value of the remaining amount of hot water.
  • the specific implementations listed above are non-limiting, and various modifications and changes made by those skilled in the art without departing from the scope of the invention are within the scope of the invention.

Abstract

A water heater and a control method thereof are disclosed. A water heater includes a pressure-bearing water tank, a manual operation device and a detection controller. The pressure-bearing water tank includes a shell and temperature sensing elements mounted on the shell. A hot water outlet is mounted on the upper portion of the shell and a supplementary water inlet is mounted on the lower portion of the shell. The number of the temperature sensing elements mounted on the shell is n, wherein n is an integer and n≥2. There exists a difference of height between the installation positions of the two adjacent temperature sensing elements. The detection controller has a single chip and includes a control circuit and a display circuit. The control circuit includes a detection module, a judgment module and an on/off control module for the water heating unit.

Description

热水器及其控制方法 技术领域 本发明属于热水器技术领域， 尤其涉及一种热水器及其控制方法。 背景技术 承压水箱是热水器的一个常用部件， 其包括箱体及感温元件， 现有的承 压水箱一般只有一个感温元件， 在工作时， 该感温元件将其所感测的温度信 号输出至控制电路， 用于控制热水器是否进行加热， 该感温元件还同时将其 所感测的温度信号显示输出， 以便使用者了解该热水器中热水的温度及可用 热水量。 承压时水箱的特点是： 水箱与水管相通， 因此水箱也同时承受自来水管 中的压力， 水箱中始终有水存在。 在使用过程中， 冷水由补水进口进入箱体 并经加热， 再从热水出口排出， 使得箱体内部高低各处的水温存在差异， 水 箱内从下到上形成一个温度从低到高的温度场。 由于传统的承压水箱仅有一 个感温元件， 位于水箱中部， 导致其感测 4青度氐， 无法准确的感测到水箱内 部各处的水温， 同时也无法准确的感测水箱内部剩余可用热水量； ^， 箱体 内部明明有热水存在， 而显示出的热水温度 ·ί艮低， 也不方便对热水器进行控 制。 因此， 现有普通热水器所用的承压式水箱温度所显示的温度有时候不能 与承压式水箱热水出口的温度显示一致， 当冷水补充至水箱中部感温元件位 置时， 水箱感温元件温度显示较 H 但是这时， 水箱上部还有热水存在， 造 成水箱中明明有热水存在， 而用户侧线控器显示水箱水温 4艮低， 从而造成用 户对机组热水产量的误解以及对水箱水温的误解和投诉。 实用新型内容 本发明的目的在于提供一种热水器及其控制方法， 可以精确地对箱体内 部的水温及可用热水量进行感测， 以便使用者准确了解该热水器中热水的温 度及可用热水量。 本发明是通过以下技术方案来实现的： 热水器， 包括有承压水箱、 手操器及检测控制器， 所述承压水箱包括箱 体及设于箱体上的感温元件， 在所述箱体的上部设有热水出口， 在所述箱体 的下部设有补水进口； 其中， 设于箱体上的所述感温元件为 n个， 其中 n为 > 2的整数， 相邻两个感温元件的安装位置之间存在高度差。 所述检测控制器设置有单片机， 所述检测控制器包括有控制电路和显示 电路， 所述控制电路包括有检测模块、 判断模块和控制机组启停的模块； 所 述检测模块接收感温元件的温度信号及温度变化信号， 判断模块对该温度信 号及温度变化信号进行判断， 得出水箱温度和水容量信息发送给显示电路并 在手操器进行显示； 控制机组启停的模块根据水箱温度和水容量信息来控制 压缩机和其他负载的启停。 上述热水器的控制方法， 其中， 包括有在热水器机组运行的同时检测水 箱内水温的步骤， 具体为： 步骤一： 热水器机组开机运行； 步骤二： 检测^压水箱所有感温元件温度 Tn; 步驟三： 判断用于控制机组启停的感温元件 i (其中 l≤i≤n, i为整数） 的温度 Ti是否小于设定温度值 T设， 即： TECHNICAL FIELD The present invention relates to the field of water heater technology, and in particular, to a water heater and a control method thereof. BACKGROUND OF THE INVENTION A pressurized water tank is a common component of a water heater, which includes a box body and a temperature sensing element. The existing pressurized water tank generally has only one temperature sensing element. When working, the temperature sensing element outputs the temperature signal sensed by the temperature sensing element. The control circuit is configured to control whether the water heater is heated, and the temperature sensing component simultaneously displays and outputs the temperature signal sensed by the temperature sensing component, so that the user knows the temperature of the hot water in the water heater and the available hot water amount. The characteristics of the water tank under pressure are: The water tank is connected to the water pipe, so the water tank also bears the pressure in the water pipe, and there is always water in the water tank. During use, the cold water enters the tank from the hydration inlet and is heated, and then discharged from the hot water outlet, so that the water temperature in the interior of the tank is different, and a temperature from low to high is formed in the tank from bottom to top. field. Since the traditional pressurized water tank has only one temperature sensing element, it is located in the middle of the water tank, which causes it to sense 4 degrees of 氐, which cannot accurately sense the water temperature inside the water tank, and can not accurately sense the remaining remaining inside the water tank. The amount of hot water; ^, the inside of the cabinet clearly has hot water, and the hot water temperature shown is low, it is not convenient to control the water heater. Therefore, the temperature indicated by the pressure water tank used in the conventional water heater can sometimes not be consistent with the temperature display of the hot water outlet of the pressurized water tank. When the cold water is replenished to the temperature sensing element position in the middle of the water tank, the temperature of the temperature sensing element of the water tank The display is more H. However, there is hot water in the upper part of the water tank, so that there is clear water in the water tank, and the user side line controller shows that the water temperature of the water tank is 4 , low, which causes the user to misunderstand the hot water production of the unit and the water temperature of the water tank. Misunderstandings and complaints. SUMMARY OF THE INVENTION The object of the present invention is to provide a water heater and a control method thereof, which can accurately sense the water temperature and the amount of hot water available inside the cabinet, so that the user can accurately understand the temperature and available heat of the hot water in the water heater. The amount of water. The invention is realized by the following technical solutions: a water heater, comprising a pressure water tank, a hand-held device and a detection controller, wherein the pressure water tank comprises a box And a temperature sensing element disposed on the casing, a hot water outlet is disposed at an upper portion of the casing, and a water supply inlet is disposed at a lower portion of the casing; wherein the temperature sensing component is disposed on the casing For n, where n is an integer > 2, there is a height difference between the mounting positions of two adjacent temperature sensing elements. The detection controller is provided with a single-chip microcomputer, the detection controller includes a control circuit and a display circuit, and the control circuit includes a detection module, a determination module, and a module for controlling the start and stop of the unit; the detection module receives the temperature sensing element. The temperature signal and the temperature change signal, the judging module judges the temperature signal and the temperature change signal, and obtains that the water tank temperature and the water capacity information are sent to the display circuit and displayed in the handheld device; the module that controls the start and stop of the unit is based on the water tank temperature and Water capacity information to control the start and stop of compressors and other loads. The method for controlling the water heater includes the steps of detecting the water temperature in the water tank while the water heater unit is running, specifically: Step 1: The water heater unit is started up; Step 2: detecting the temperature Tn of all the temperature sensing elements of the pressure water tank; Step 3 : Judging whether the temperature Ti of the temperature sensing element i (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than the set temperature value T, ie:
Ti<T设,如是， 进入步驟四； 如否， 进入步驟五； 步 四： 热水器机组继续运行， 并检测感温元件电阻压力变^率； 进入 步骤二； 步骤五： 停机； 步骤六： 继续判断用于控制机组启停的感温元件 i (其中 l≤i≤n， i为整 数） 的温度 Ti是否小于 T设 - Δ Τ ( Δ Τ > 0, 为机组再次启动时的水温降低 值）， 即： Ti<T, if yes, go to step 4; if no, go to step 5; Step 4: The water heater unit continues to run, and detect the resistance temperature change rate of the temperature sensing element; go to step 2; Step 5: Stop; Step 6: Continue It is judged whether the temperature Ti of the temperature sensing element i (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than T set - Δ Τ ( Δ Τ > 0, which is the water temperature decrease value when the unit is restarted) , which is:
Ti<T - A T,如否， 进入步骤五； 如是， 进入步骤一。 本发明由于增加了感温元件的数量， 安装于箱体上的感温元件为两个、 三个或更多， 可以分别对不同水位的水进行感测， 提高了对温度及可用热水 量感测的精度， 更方便控制与使用。 本发明的有益效果如下： 本发明 4艮好的解决了用户侧水温显示不能反映正确反映热水出口的温度 显示问题， 而且， 实时分析判断出当前水箱中的热水容量。 实时反映承压式 水箱内实际热水剩余量 ,根据残余水量及当前运行模式进行人性化启停控制。 综上所述， 本发明的优点是： 增加了感温元件的数量， 通过提高箱体内 部水温的感测精度， 对热水器进行精确、 优化控制及使用， 为用户适时提供 舒适生活热水。 具体为： Ti<T - AT, if no, go to step 5; if yes, go to step 1. In the invention, since the number of temperature sensing elements is increased, the temperature sensing elements mounted on the box are two, three or more, and the water of different water levels can be sensed separately, thereby improving the sense of temperature and available hot water. The accuracy of the measurement is more convenient for control and use. The beneficial effects of the present invention are as follows: The invention solves the problem that the user side water temperature display cannot reflect the temperature display of correctly reflecting the hot water outlet, and the real-time analysis determines the hot water capacity in the current water tank. The actual amount of actual hot water in the pressure tank is reflected in real time, and the humanized start and stop control is carried out according to the residual water volume and the current operation mode. In summary, the advantages of the present invention are: increasing the number of temperature sensing elements, and accurately, optimally controlling and using the water heater by improving the sensing accuracy of the water temperature inside the cabinet, so as to provide comfortable living hot water for the user at the right time. Specifically:
1.采用具有温度敏感金属变形率的感温元件进行检测， 真实反映水箱热 水出水口温度。 1. The temperature sensing element with temperature-sensitive metal deformation rate is used for detection, which truly reflects the hot water outlet temperature of the water tank.
2.检测热水力 p热时感温元件电阻压力变^:率方法检测， 实时反馈和控制 水箱内水温变化情况， 该控制较普通单感温元件控制的承压式水箱， 热水产 水率高。 2. Detecting the hot water force p heat when the temperature element resistance pressure change ^: rate method detection, real-time feedback and control of the water temperature change in the water tank, the control is more than the ordinary single temperature element control pressure tank, hot water production rate high.
3. 检测多感温元件电阻变化率，对于每一个位置的感温元件通过单片机 进行循环检测， 实时更新当前的温度值， 并通过检测到的每个感温元件温度， 可以实时分析判断出当前水箱中的热水容量。 实时反映承压式水箱内实际热 水剩余量， 根据残余水量及当前运行模式进行人性化启停控制。 这样， 可以 在最佳时间内开机， 即避免了机组启动过早， 水箱内冷热水过早混合， 提高 水箱的热水产水率， 又避免机组启动过晚， 加热时间过长。 3. Detect the resistance change rate of the multi-temperature sensing element. For each position, the temperature sensing element is cyclically detected by the single-chip microcomputer, and the current temperature value is updated in real time, and the temperature of each temperature sensing element detected can be analyzed and judged in real time. The amount of hot water in the water tank. The actual amount of actual hot water in the pressure tank is reflected in real time, and the humanized start and stop control is carried out according to the residual water volume and the current operation mode. In this way, it can be turned on in the optimal time, that is, the unit is prevented from starting too early, the hot and cold water in the water tank is mixed prematurely, the hot water production rate of the water tank is increased, and the unit is prevented from starting too late, and the heating time is too long.
4.检测控制器可独立配套在主板上或作为附件装在水箱上， 通过信号线 与主板衔接， 使用和安装灵活。 附图说明 构成本申请的一部分的附图用来提供对本实用新型的进一步理解， 本实 用新型的示意性实施例及其说明用于解释本实用新型， 并不构成对本实用新 型的不当限定。 在附图中： 图 1是本发明热水器的控制方法机组运行同时检测水箱温度步骤的流程 示意图； 图 2是本发明热水器的控制方法水容量信息检测和判断步骤的流程示意 图； 图 3是本发明热水器的结构示意图。 附图标记说明: 箱体 2、 感温元件 控制电路 4、 显示电路 插孔 6、 热水出口 补水进口 8、 循环出口 4. The detection controller can be independently installed on the main board or as an accessory on the water tank, connected to the main board through the signal line, flexible to use and install. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic flow chart showing a step of controlling a water tank temperature of a water heater according to a control method of a water heater according to the present invention; FIG. 2 is a flow chart showing a water capacity information detecting and determining step of a water heater control method of the present invention; Schematic diagram of the structure of the water heater. DESCRIPTION OF REFERENCE NUMERALS: box 2, temperature sensing element control circuit 4, display circuit jack 6, hot water outlet hydration inlet 8, circulation outlet
9、 循环进口。 具体实施方式 本发明公开了一种热水器， 如图 3所示， 包括有承压水箱、 手操器及检 测控制器， 所述承压水箱包括箱体 1及设于箱体 1上的感温元件 2 , 在所述 箱体 1的上部设有热水出口 6 , 在所述箱体 1的下部设有补水进口 7; 其中， 设于箱体 1上的所述感温元件 2为 n个， 其中 n为 > 2的整数， 相邻两个感 温元件的安装位置之间存在高度差。 所述检测控制器设置有单片机， 所述检测控制器包括有控制电路和显示 电路， 所述控制电路包括有检测模块、 判断模块和控制机组启停的模块； 所 述检测模块接收感温元件的温度信号及温度变化信号， 判断模块对该温度信 号及温度变化信号进行判断， 得出水箱温度和水容量信息发送给显示电路并 在手操器进行显示； 控制机组启停的模块根据水箱温度和水容量信息来控制 压缩机和其他负载的启停。 各相邻两个所述感温元件的安装位置之间的高度距离值相等。 在补水进口 7的上方设有循环出口 8及循环进口 9 , 在所述箱体 1 内设 有镁棒， 以吸收水中的碳酸离子， 避免箱体内壁结垢； 在箱体 1内壁设有插 孔 5， 所述感温元件 2—端口插入温度检测主板上， 另一带感温探头的端口 插入水箱内的插孔 5内， 固定在该插孔 5上并位于箱体 1之内， 优选地， 所 述感温元件 2为六个， 其中至少一个既与控制电路 3电气连接又与显示电路 4电气连接， 剩余感温元件与显示电路 4电气连接， 且各感温元件 2沿上下 方向对应设置。 本实施例由于增加了感温元件 2的数量， 安装于箱体 1上的感温元件 2 为六个， 靠近箱体 1上部的感温元件 2与显示电路 4电气连接， 靠近箱体 1 下部的感温元件 2也与显示电路 4电气连接， 位于箱体中部的感温元件 2既 与控制电路 3电气连接又与显示电路 4电气连接。 本实施例可以分别对不同 水位的水进行感测， 提高了温度及可用热水量感测的精度， 以实现对热水器 进行精确、 优化控制及使用， 为用户适时提供舒适生活热水。 所述感温元件 2是一个具有随温度变 的电阻值的热敏电阻， 不同的温 度下对应一个电阻值， 水温变^^导致水箱感温元件电阻的变化， 从而导致在 同一电流下的电压变化。 控制电路检测出这样一个电压变化的信号， 从而知 道电阻的阻值的变化， 这样就可以得出对应温度，感温元件型号可采用： 50K 热敏电阻。 上述热水器的控制方法， 其中， 包括有在热水器机组运行的同时检测水 箱内水温的步驟， 如图 1 , 具体为： 步骤一： 热水器机组开机运行； 步骤二： 检测承压水箱所有感温元件温度 Tn; 步骤三： 判断用于控制机组启停的第 i感温元件（其中 l≤i≤n， i为整数） 的温度 Ti是否小于设定温度值 T设， 即： 9, recycling imports. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention discloses a water heater, as shown in FIG. 3, comprising a pressurized water tank, a hand-held device and a detection controller, wherein the pressurized water tank comprises a box body 1 and a temperature sensing device disposed on the box body 1 The component 2 has a hot water outlet 6 at an upper portion of the casing 1, and a water supply inlet 7 at a lower portion of the casing 1; wherein the temperature sensing elements 2 provided on the casing 1 are n Where n is an integer > 2, and there is a height difference between the mounting positions of two adjacent temperature sensing elements. The detection controller is provided with a single-chip microcomputer, the detection controller includes a control circuit and a display circuit, and the control circuit includes a detection module, a determination module, and a module for controlling the start and stop of the unit; the detection module receives the temperature sensing element. The temperature signal and the temperature change signal, the judging module judges the temperature signal and the temperature change signal, and obtains that the water tank temperature and the water capacity information are sent to the display circuit and displayed in the handheld device; the module that controls the start and stop of the unit is based on the water tank temperature and Water capacity information to control the start and stop of compressors and other loads. The height distance values between the mounting positions of the adjacent two of the temperature sensing elements are equal. A circulation outlet 8 and a circulation inlet 9 are arranged above the hydration inlet 7, and a magnesium rod is arranged in the tank 1 to absorb carbonate ions in the water to avoid scaling inside the tank body; The hole 5, the temperature sensing element 2 - the port is inserted into the temperature detecting main board, and the port of the other temperature sensing probe is inserted into the jack 5 in the water tank, is fixed on the jack 5 and is located in the box 1 , preferably The temperature sensing element 2 is six, at least one of which is electrically connected to the control circuit 3 and electrically connected to the display circuit 4, and the remaining temperature sensing element is electrically connected to the display circuit 4, and each temperature sensing element 2 corresponds to the up and down direction. Settings. In this embodiment, since the number of temperature sensing elements 2 is increased, the temperature sensing element 2 mounted on the casing 1 is Six, the temperature sensing element 2 near the upper portion of the casing 1 is electrically connected to the display circuit 4, and the temperature sensing element 2 near the lower portion of the casing 1 is also electrically connected to the display circuit 4, and the temperature sensing element 2 located in the middle of the casing is both The electrical connection of the control circuit 3 is in turn electrically connected to the display circuit 4. In this embodiment, water of different water levels can be sensed separately, and the accuracy of temperature and available hot water sensing can be improved, so that accurate, optimal control and use of the water heater can be realized, and the user can provide comfortable domestic hot water at the right time. The temperature sensing element 2 is a thermistor having a resistance value which changes with temperature, and corresponds to a resistance value at different temperatures, and the water temperature changes to cause a change in the resistance of the temperature sensing element of the water tank, thereby causing a voltage at the same current. Variety. The control circuit detects such a voltage change signal, thereby knowing the change in the resistance value of the resistor, so that the corresponding temperature can be obtained, and the temperature sensing component model can be: 50K thermistor. The above water heater control method comprises the steps of detecting the water temperature in the water tank while the water heater unit is running, as shown in FIG. 1 , specifically: Step 1: The water heater unit is started up; Step 2: detecting the temperature of all the temperature sensing elements of the pressure water tank Tn; Step 3: Determine whether the temperature Ti of the i-th temperature sensing element (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than the set temperature value T, that is:
Ti<T设,如是， 进入步骤四； 如否， 进入步骤五； 步像四： 热水器机组继续运行， 并检测感温元件电阻压力变^^率； 进入 步骤二； 步骤五： 停机； 步骤六： 继续判断用于控制机组启停的第 i感温元件 （其中 l≤i≤n， i为 整数） 的温度 Ti是否小于 T设 - Δ Τ ( Δ Τ > 0 , 为机组再次启动时的水温降 低值）， 即： Ti<T set, if yes, go to step 4; if no, go to step 5; Step 4: The water heater unit continues to run, and detect the resistance temperature of the temperature sensing element becomes ^^ rate; go to step 2; Step 5: Stop; Step 6 : Continue to judge whether the temperature Ti of the i-th temperature sensing element (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than T set - Δ Τ ( Δ Τ > 0, which is the water temperature when the unit starts again. Lower the value), ie:
Ti<T - A T,如否， 进入步驟五； 如是， 进入步骤一。 如图 2， 所述热水器的控制方法， 其中， 包括有水容量信息检测和判断 步驟， 具体为： 步驟一： 热水器机組开机运行、 停机或待机时， 开始检测; 步骤二： 检测位于水箱由上往下方向第一个感温元件温度 Tl， 判断 T1 是否小于设定温度 Τ设， 如是， 进入步骤三， 如否， 进入步骤四； 步骤三： 显示当前热水容量为 0%; 步骤四： 检测位于水箱由上往下方向第二个感温元件温度 Τ2, 判断 Τ2 是否小于设定温度 Τ设， 如是， 进入步骤五， 如否， 进入步骤六； 步骤五： 显示当前热水容量为 χι%， ! % - -χ100 ; Ti<T - AT, if no, go to step 5; if yes, go to step 1. As shown in FIG. 2, the water heater control method includes: a water capacity information detection and determination step, specifically: Step 1: When the water heater unit is powered on, stopped, or standby, the detection is started; Step 2: Detect the temperature Tl of the first temperature sensing element located in the water tank from the top to the bottom, and determine whether T1 is less than the set temperature setting. If yes, go to step 3. If no, go to step 4; Step 3: Display the current hot water The capacity is 0%; Step 4: Detect the temperature of the second temperature sensing element Τ2 from the top to the bottom of the water tank, and judge whether Τ2 is less than the set temperature setting. If yes, go to step 5. If no, go to step 6; Step 5 : Shows the current hot water capacity as χι%, ! % - -χ100 ;
η 步骤六： 继续检测位于水箱由上往下方向第 i个感温元件温度 Ti， 判断 Ti是否小于设定温度 T设， 如是， 进入步驟七， 如否， 进入步 八； 步 ！^ 七 ： 显 示 当 前 热 水 容 量 为 Xi-1% , % =— xl00%,l < i≤ «且1属于整数；  η Step 6: Continue to detect the temperature Ti of the i-th temperature sensing element from the top to the bottom of the water tank, and determine whether Ti is less than the set temperature T. If yes, go to step 7. If no, go to step VIII; step! ^ VII: shows that the current hot water capacity is Xi-1%, % = - xl00%, l < i ≤ « and 1 is an integer;
n 步^八： 显示当前热水容量为 100%。 因为水箱从下到上依次分布有 2个或者更多的感温元件， 水箱上相邻两 个感温元件从上到下 ]E巨离相同。 从而每个水箱感温元件检测到一个温度， 我 们每隔一个固定周期检测依次水箱上各点温度， 根据水箱从下到上的温度， 我们每隔一个周期就得出水箱上从下到上温度分布曲线， 假定我们水温到设 定温度即为热水， 又因为水箱上相邻两个感温元件距离一定， 假设得出从上 到下每个感温元件的水温， 从而得出水箱内实际热水剩余量的数值。 上述所列具体实现方式为非限制性的， 对本领域的技术人员来说， 在不 偏离本发明范围内， 进行的各种改进和变化， 均属于本发明的保护范围。  n Step ^8: The current hot water capacity is displayed as 100%. Because the water tank is distributed with two or more temperature sensing elements from bottom to top, the two adjacent temperature sensing elements on the water tank are the same from top to bottom. Therefore, each tank temperature sensing element detects a temperature. We detect the temperature of each point on the water tank every other fixed period. According to the temperature of the water tank from bottom to top, we get the bottom to top temperature of the water tank every other cycle. The distribution curve assumes that the water temperature is the set temperature, that is, the hot water, and because the distance between two adjacent temperature sensing elements on the water tank is constant, it is assumed that the water temperature of each temperature sensing element from top to bottom is obtained, thereby obtaining the actual temperature in the water tank. The value of the remaining amount of hot water. The specific implementations listed above are non-limiting, and various modifications and changes made by those skilled in the art without departing from the scope of the invention are within the scope of the invention.

Claims

权 利 要 求 书 一种热水器， 包括有承压水箱、 手操器及检测控制器， 所述承压水箱 包括箱体 （ 1 )及设于箱体 （ 1 ) 上的感温元件 （ 2 ), 在所述箱体 （ 1 ) 的上部设有热水出口 （ 6 )， 在所述箱体（ 1 )的下部设有补水进口 （ 7 )； 其特征在于， 设于箱体（ 1 ) 上的所述感温元件 （2 ) 为 n个， 其中 n 为 > 2的整数, 相邻两个感温元件的安装位置之间存在高度差。 如权利要求 1所述的热水器， 其特征在于， 所述检测控制器包括有控 制电路和显示电路， 所述控制电路包括有检测模块、 判断模块和控制 机组启停的模块； 所述检测模块接收感温元件的温度信号及温度变化 信号， 判断模块对该温度信号及温度变化信号进行判断， 得出水箱温 度和水容量信息发送给所述显示电路并在手操器进行显示； 控制机组 启停的模块 居水箱温度和水容量信息来控制压缩机和其他负载的启 停。 如权利要求 2所述的热水器， 其特征在于， 各相邻两个所述感温元件 的安装位置之间的高度距离值相等。 如权利要求 3所述的热水器， 其特征在于， 在所述补水进口 （7 )的上 方设有循环出口 （8 ) 及循环进口 （9 )， 在所述箱体 （ 1 ) 内设有吸收 水中的碳酸离子的镁棒。 如权利要求 1至 4中任一项所述的热水器， 其特征在于， 在箱体（ 1 ) 内壁设有插孔（5 )， 所述感温元件 ( 2 ) 一端口插入温度检测主板上， 另一带感温探头的端口插入水箱内的插孔（ 5 ) 内， 固定在该插孔（ 5 ) 上并位于箱体 ( 1 )之内。 如权利要求 5所述的热水器， 其特征在于， 所述感温元件（ 2 )为六个， 其中至少一个既与控制电路（3 )电气连接又与显示电路电气连接， 剩 余感温元件与所述显示电路（4 ) 电气连接， 且各感温元件 （2 ) 沿上 下方向对应设置。 如权利要求 6所述的热水器， 其特征在于， 靠近所述箱体（ 1 )上部的 感温元件（2 )与显示电路（4 ) 电气连接， 靠近箱体（1 ) 下部的感温 元件 （2) 与控制电路（3) 电气连接。 如权利要求 5所述的热水器， 其特征在于， 所述感温元件（2)型号可 采用： 50K热敏电阻。 控制如权利要求 1至 4中任一项所述的热水器的控制方法， 其特征在 于， 包括有在热水器机组运行的同时检测水箱内水温的步驟， 具体为： 步骤一： 热水器机组开机运行； The invention relates to a water heater, comprising a pressurized water tank, a hand-held device and a detecting controller, wherein the pressurized water tank comprises a box body (1) and a temperature sensing element (2) disposed on the box body (1), a hot water outlet (6) is disposed at an upper portion of the tank (1), and a water supply inlet (7) is disposed at a lower portion of the tank (1); and the utility model is characterized in that the box body (1) is disposed on the box body (1) The temperature sensing element (2) is n, wherein n is an integer of > 2, and there is a height difference between the mounting positions of two adjacent temperature sensing elements. The water heater according to claim 1, wherein the detection controller comprises a control circuit and a display circuit, and the control circuit comprises a detection module, a determination module, and a module for controlling the start and stop of the unit; the detection module receives The temperature signal and the temperature change signal of the temperature sensing element determine the temperature signal and the temperature change signal, and the water tank temperature and the water volume information are sent to the display circuit and displayed in the handheld device; The module's water tank temperature and water capacity information to control the start and stop of compressors and other loads. The water heater according to claim 2, wherein the height distance between the mounting positions of the adjacent two of the temperature sensing elements is equal. The water heater according to claim 3, wherein a circulation outlet (8) and a circulation inlet (9) are provided above the hydration inlet (7), and absorption water is provided in the tank (1) Magnesium rods of carbonate ions. The water heater according to any one of claims 1 to 4, characterized in that: the inner wall of the casing (1) is provided with a socket (5), and a port of the temperature sensing element (2) is inserted into the temperature detecting main board. Another port with a temperature probe is inserted into the socket ( 5 ) in the water tank, fixed to the jack ( 5 ) and located inside the box ( 1 ). The water heater according to claim 5, wherein the temperature sensing elements (2) are six, at least one of which is electrically connected to the control circuit (3) and to the display circuit, and the residual temperature sensing element and the The display circuit (4) is electrically connected, and each of the temperature sensing elements (2) is disposed correspondingly in the up and down direction. The water heater according to claim 6, characterized in that the temperature sensing element (2) near the upper portion of the casing (1) is electrically connected to the display circuit (4), and is close to the temperature sensing of the lower portion of the casing (1). The component (2) is electrically connected to the control circuit (3). The water heater according to claim 5, wherein the temperature sensing element (2) model can be: a 50K thermistor. The method for controlling the water heater according to any one of claims 1 to 4, further comprising the steps of detecting the water temperature in the water tank while the water heater unit is running, specifically: Step 1: The water heater unit is turned on;
步骤二： 检测承压水箱所有感温元件温度 Tn;  Step 2: Detecting the temperature of all temperature sensing components of the pressurized water tank Tn;
步骤三： 判断用于控制机组启停的第 i感温元件 （其中 l≤i≤n, i为 整数） 的温度 Ti是否小于设定温度值 T设， 即：  Step 3: Determine whether the temperature Ti of the i-th temperature sensing element (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than the set temperature value T, that is:
Ti<T设,如是， 进入步驟四； 如否， 进入步骤五；  Ti<T, if yes, go to step 4; if no, go to step 5;
步骤四： 热水器机组继续运行， 并检测感温元件电阻压力变^率， 进入步骤二；  Step 4: The water heater unit continues to operate, and detects the resistance temperature change rate of the temperature sensing element, and proceeds to step 2;
步骤五： 停机；  Step 5: Stop;
步骤六： 继续判断用于控制机组启停的第 i感温元件 （其中 l≤i≤n, i为整数） 的温度 Ti是否小于 T设 -ΔΤ ( ΔΤ>0, 为机组再次启动时的 水温降低值）， 即：  Step 6: Continue to judge whether the temperature Ti of the i-th temperature sensing element (where l ≤ i ≤ n, i is an integer) for controlling the start and stop of the unit is less than T set - Δ Τ ( Δ Τ > 0, which is the water temperature when the unit starts again. Lower the value), ie:
Ti<T"¾L-AT,如否， 进入步骤五； 如是， 进入步骤一。 控制如权利要求 1至 4中任一项所述的热水器的控制方法， 其特征在 于， 包括有水容量信息检测和判断步骤， 具体为：  Ti<T"3⁄4L-AT, if no, proceeds to step 5; if yes, proceeds to step 1. Controlling the water heater according to any one of claims 1 to 4, characterized in that it includes water capacity information detection And the judgment step, specifically:
步骤一： 热水器机组开机运行、 停机或待机时， 开始检测； 步驟二： 检测位于水箱由上往下方向第一个感温元件温度 T1, 判断 T1是否小于设定温度 T设， 如是， 进入步骤三， 如否， 进入步骤四； 步骤三： 显示当前热水容量为 0%;  Step 1: When the water heater unit is turned on, stopped or standby, start testing; Step 2: Detect the temperature T1 of the first temperature sensing element located in the water tank from top to bottom, and judge whether T1 is less than the set temperature T. If yes, enter the step 3. If no, go to Step 4; Step 3: Display the current hot water capacity as 0%;
步银四： 检测位于水箱由上往下方向第二个感温元件温度 T2， 判断 Τ2是否小于设定温度 Τ设， 如是， 进入步錄五， 如否， 进入步骤六； 步骤五： 显示当前热水容量为 χι%, 其中水容量 i% =丄 χΐοο%;  Step Silver 4: Detect the temperature T2 of the second temperature sensing element from the top to the bottom of the water tank, and judge whether Τ2 is less than the set temperature setting. If yes, go to step 5, if no, go to step 6; Step 5: Display the current The hot water capacity is χι%, where the water capacity i% = 丄χΐοο%;
η 步^ ^六： 继续检测位于水箱由上往下方向第 i个感温元件温度 Ti, 判断 Ti是否小于设定温度 T设， 如是，进入步骤七， 如否，进入步骤八; 步 像 七 ： 显 示 当 前 热 水 容 量 为 Xi-1% , t l % =— χΐοο%,ι < i≤ "且 i属于整数 η Step ^ ^6: Continue to detect the temperature Ti of the i-th temperature sensing element from the top to the bottom of the water tank, and determine whether Ti is less than the set temperature T. If yes, go to step 7. If no, go to step 8; Step 7: Shows that the current hot water capacity is Xi-1%, t l % =— χΐοο%, ι < i≤ " and i is an integer
n ；  n ;
步骤八： 显示当前热水容量为 100%。  Step 8: Display the current hot water capacity as 100%.
PCT/CN2010/073958 2009-07-15 2010-06-13 Water heater and control method thereof WO2011006409A1 (en)

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