CN103836800B - Electric heater and control method thereof - Google Patents

Electric heater and control method thereof Download PDF

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Publication number
CN103836800B
CN103836800B CN201210472397.5A CN201210472397A CN103836800B CN 103836800 B CN103836800 B CN 103836800B CN 201210472397 A CN201210472397 A CN 201210472397A CN 103836800 B CN103836800 B CN 103836800B
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water
temperature
water tank
electric heater
preset temperature
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CN103836800A (en
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李硕
王明
肖齐云
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Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Abstract

The invention discloses the control method of a kind of electric heater, said method comprising the steps of: 1) detect multiple water temperatures of differing heights position in the water tank of described electric heater;2) by meansigma methods T of the plurality of water temperatureadWith N number of preset temperature T1、T1、…、TnThe hot water amount compared and determine in described water tank according to comparative result, wherein N is the integer more than or equal to 2, and i is the integer more than or equal to 1 and less than N, Ti<Ti+1;3) described hot water amount is shown.The control method of electric heater according to embodiments of the present invention, can improve the precision of testing result.Simple in construction, easy to use, can be with real time inspection hot water amount, in order to the use of electric heater, improve the performance of electric heater.Additionally, the invention allows for a kind of electric heater.

Description

Electric heater and control method thereof
Technical field
The present invention relates to kitchen guarding's technical field of electric appliances, control method and employing the method particularly to a kind of electric heater are entered The electric heater that row controls.
Background technology
Existing Water tank for electrical water heater is provided with multiple temperature sensor, and multiple temperature sensors are used for measuring differing heights in water tank The water temperature of position.It is preset with a temperature value in controller, the temperature value of preset temperature value with the peak detected is compared Relatively.If preset temperature value is more than or equal to peak temperature value, then hot water quantity display function is 0%, if preset temperature value is less than the highest The temperature value of point, then compare other temperature that preset temperature value and temperature sensor detect, and true according to comparative result Determine the hot water amount in water tank.Finally by the hot water amount of display display electric heater.
Owing to, water tank is not when heating discharges water, water tank inner height be more or less the same two at temperature value be also more or less the same, according to There is any discrepancy with actual result with a setting value result of the comparison for the multiple temperature sensor of traditional employing.Employing traditional method is surveyed The display structure of hot water amount be inaccurate, user is before using hot water, it is difficult to learn storage in water tank actual amount of water and Water temperature, brings inconvenience in use.
Summary of the invention
It is contemplated that solve one of above-mentioned technical problem the most to a certain extent or provide at a kind of useful business choosing Select.To this end, it is an object of the present invention to propose a kind of can the control of electric heater of hot water quantity display function fast and accurately Method.
Further object is that a kind of electric heater using the method to be controlled of proposition.
The control method of electric heater according to embodiments of the present invention, said method comprising the steps of: 1) detect described electric heating Multiple water temperatures of differing heights position in the water tank of hydrophone;2) by meansigma methods T of the plurality of water temperatureadWith N number of preset temperature T1、T2、…、TnThe hot water amount compared and determine in described water tank according to comparative result, wherein N is more than or equal to 2 Integer, i is more than or equal to 1 and less than the integer of N, Ti<Ti+1;3) described hot water amount is shown.
The control method of electric heater according to embodiments of the present invention, the temperature value of differing heights position in detection electric heater, Then the meansigma methods of this temperature is i.e. regarded as the mean temperature in electric heater.Then according to this temperature and N number of preset temperature Comparative result judges hot water amount.Use temperature value-taking mean value process, decrease the incidental error of temperature detection, improve accuracy rate. Meanwhile, the hot water amount in using N number of preset temperature to judge electric heater, can improve the precision of testing result without increasing Electrical part and increase cost.Simple in construction, easy to use, can be with real time inspection hot water amount, in order to use, improve electric heating The performance of hydrophone.
It addition, the control method of electric heater according to the above embodiment of the present invention, it is also possible to there is following additional technology special Levy:
Additionally, according to one embodiment of present invention, if Tad<T1, it is determined that described hot water amount is 0%;If Tad≥ Tn, it is determined that described hot water amount is 100%;If Ti≤Tad< Ti+1, it is determined that described hot water amount is (i/n) × 100%.
According to one embodiment of present invention, first by TadWith T1Compare, if Tad≥T1, then by TadWith TnRelatively, If Tad<Tn, then by TadOrder and T2, T3..., Tn-1Compare.
Advantageously, described preset temperature is 10, and described step 1) includes bottom, the middle part detecting in described water tank respectively Three temperature with top.
Further, described N number of preset temperature includes first group of N number of preset temperature T1’、T2’、…、Tn' and second group of N Individual preset temperature T1”、T2’’、…、Tn", described control method also includes that detecting the water in described water tank is the most made With;If the water in described water tank is currently being used, then by TadWith described first group of N number of preset temperature T1’、T2’、…、 Tn' compare, if the water in described water tank is not used by, then by TadWith described second group of N number of preset temperature T1”、 T2’’、…、Tn" compare.
Electric heater according to embodiments of the present invention, including: water tank, heater block, multiple temperature sensor, controller with And display.Specifically, described water tank is provided with water inlet pipe and outlet pipe;Described heater block is located in described water tank;Institute State multiple temperature sensor to be located on described water tank, the water temperature of differing heights position in detecting described water tank respectively;Described Controller is connected with the plurality of temperature sensor respectively, for multiple water temperatures of the plurality of temperature sensor being detected Meansigma methods TadWith N number of preset temperature T1、T2、…、TnThe heat compared and determine in described water tank according to comparative result The water yield, wherein N is the integer more than or equal to 2, and i is the integer more than or equal to 1 and less than N, Ti<Ti+1;Described display Device is connected with described controller, is used for showing described hot water amount.
Electric heater according to embodiments of the present invention, uses differing heights position in multiple temperature sensor detection electric heater Temperature value, and judge hot water amount according to the meansigma methods of the multiple temperature detected with the comparative result of N number of preset temperature.Use This electric heater, the temperature averages in power taking water heater, decrease thermometric incidental error, improve thermometric Accuracy rate.Meanwhile, use N number of preset temperature to judge the hot water amount in electric heater, can improve testing result precision and Electrical part will not be increased and increase cost.Simple in construction, easy to use, can be with real time inspection hot water amount, in order to use, carry The high performance of electric heater.
According to one embodiment of present invention, described controller is at Tad<T1Time determine described hot water amount be 0%, at Tad≥Tn Time determine that described hot water amount is 100% and at Ti≤Tad< Ti+1Time determine that described hot water amount is for (i/n) × 100%.
Advantageously, described controller is first by Tad and T1Relatively, then at Tad≥T1Time by TadWith TnRelatively, finally At Tad<TnTime by TadOrder and T2, T3..., Tn-1Compare.
Additionally, described sensor is three and is respectively used to detect the temperature at bottom, middle part and top in described water tank, institute Stating preset temperature is 10.
Advantageously, described electric heater also includes that water flow sensor, described water flow sensor are located at described water inlet pipe or institute State outlet pipe at least one, for detecting whether the water being currently in use in described water tank;Wherein said N number of preset temperature bag Include first group of N number of preset temperature T1’、T2’、…、Tn' and second group of N number of preset temperature T1”、T2”、…、Tn”;Its In when the water detected in described water tank is currently being used described controller by TadWith described first group of N number of preset temperature T1’、 T2’、…、Tn' compare, and when the water detected in described water tank is not used by described controller by TadWith described Two groups of N number of preset temperature T1”、T2”、…、Tn" compare.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become bright from the following description Aobvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will be apparent from from combining the accompanying drawings below description to embodiment With easy to understand, wherein:
Fig. 1 is the flow chart of the control method of the electric heater of one embodiment of the present of invention;
Fig. 2 is the flow chart of the control method of the electric heater of another embodiment of the present invention;
Fig. 3 is the flow chart of the control method of the electric heater of one more embodiment of the present invention;With
Fig. 4 is the schematic diagram of the electric heater of one embodiment of the present of invention.
Wherein, water tank 10, water inlet pipe 11, outlet pipe 12, heater block 20, temperature sensor 30, water flow sensor 40, first add heat pipe 21, second add heat pipe the 22, first temperature sensor the 31, second temperature sensor the 32, the 3rd temperature Sensor 33.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", Orientation or the position relationship of the instruction such as " outward ", " clockwise ", " counterclockwise " are based on orientation shown in the drawings or position relationship, It is for only for ease of the description present invention and simplifies description rather than instruction or imply that the device of indication or element must have specific Orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed Or implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or two Above, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected;Can To be mechanical connection, it is also possible to be electrical connection;Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, permissible It it is the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood as the case may be Language concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score Can include that the first and second features directly contact, it is also possible to include that the first and second features are not directly contact but logical Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " on Face " include that fisrt feature directly over second feature and oblique upper, or is merely representative of fisrt feature level height higher than the Two features.Fisrt feature second feature " under ", " lower section " and " below " include that fisrt feature is special second Levy underface and obliquely downward, or be merely representative of fisrt feature level height less than second feature.
Storage-type electric water heater be the water in water tank is heated to insulation after re-use.Use for the convenience of the user, need to show water The hot water amount of storage in case.In tradition electric heater, water tank is provided with multiple temperature sensor, and multiple temperature sensors are used for The water temperature of differing heights position in measurement water tank.Temperature value it is preset with in controller, preset temperature value is the highest with detect The temperature value of point compares.If preset temperature value is more than or equal to peak temperature value, then hot water quantity display function is 0%, if Other temperature that preset temperature value and temperature sensor detect less than the temperature value of peak, is then compared by preset temperature value Relatively, and according to comparative result the hot water amount in water tank is determined.Finally by the hot water amount of display display electric heater.Due to, Water tank heating do not discharge water time, water tank inner height be more or less the same two at temperature value be also more or less the same, according to traditional employing There is any discrepancy with actual result with a setting value result of the comparison in multiple temperature sensors.Use the hot water amount that traditional method records Display structure be inaccurate, user is using before hot water, it is difficult to learns actual amount of water and the water temperature of storage in water tank, causes It is not convenient to use.It is an object of the invention to propose a kind of simple in construction, and testing result electric heater accurately and control thereof Method, the electric heater hot water amount when being used and being not used by can also be detected by this electric heater respectively.
The control method of downward description electric heater according to embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 shows the control method of the electric heater of the embodiment of the present invention, and the method comprises the following steps:
1) multiple water temperatures of differing heights position in the water tank of this electric heater are detected.This is because the water tank of electric heater The interior water temperature in differing heights position is different, and the water temperature being in identical height and position is basically identical, it is therefore desirable to right The water temperature of differing heights detects.
2) calculation procedure 1) in meansigma methods T of multiple water temperatures that recordsad, and by this meansigma methods TadWith N number of preset temperature T1、 T2、…、TnCompare, then according to meansigma methods TadWith N number of preset temperature T1、T2、…、TnBetween the knot that compares Fruit determines the hot water amount in water tank.Wherein, N number of preset temperature T1、T2、…、TnFor select according to actually used situation Temperature value.At this N number of preset temperature T1、T2、…、TnIn, by T1To TnTemperature value be gradually increased.In other words, N is the integer more than or equal to 2, and i is the integer more than or equal to 1 and less than N, and Ti<Ti+1
3) step display 2) hot water amount that determines.
The control method of electric heater according to embodiments of the present invention, the temperature value of differing heights position in detection electric heater, Then the meansigma methods of this temperature is i.e. regarded as the mean temperature in electric heater.Then according to this temperature and N number of preset temperature Comparative result judges hot water amount.Use temperature value-taking mean value process, decrease the incidental error of temperature detection, improve accuracy rate. Meanwhile, the hot water amount in using N number of preset temperature to judge electric heater, can improve the precision of testing result without increasing Electrical part and increase cost.Simple in construction, easy to use, can be with real time inspection hot water amount, in order to use, improve electric heating The performance of hydrophone.
In some embodiments of the invention, by TadCompare with N number of preset temperature, and according to TadWith N number of default temperature Hot water amount in the comparative result judgement water tank of degree, specifically, if Tad<T1, say, that meansigma methods T of water temperaturead Minima less than N number of preset temperature, it is determined that the hot water amount in this water tank is 0%.
If additionally, Tad≥Tn, in other words, TadNot less than the maximum of N number of preset temperature, at this point it is possible to think water Hot water it is filled with, it is determined that described hot water amount is 100% in case.
Additionally, when meansigma methods T of water temperatureadTime between the maximum and minima of N number of preset temperature, the hot water in water tank Amount is between 0 to 100%, by meansigma methods T of water temperatureadWith the T in N number of preset temperature2、T3、…Tn-1Compare. Now, for the T in N number of preset temperatureiIf, Ti≤Tad< Ti+1, say, that water temperature meansigma methods TadN number of pre- If two adjacent temperature value T in temperatureiAnd Ti+1Between, the hot water amount in then determining this water tank is (i/n) × 100%.
As in figure 2 it is shown, in a concrete example of above-described embodiment, first can be determined that mean temperature T in water tankad Whether less than T1If then showing that the hot water amount in water tank is 0%;If it is not, then judge TadWhether more than or equal to TnIf, It is that the hot water amount in display water tank is 100%, then can stop heating immediately to save the energy.Hot water in using water tank Time, because of cold water of constantly entering, the water temperature in water tank is also constantly in change, then hot water amount is as well as the water temperature in water tank Change and change.User can hot water amount's service condition in real time inspection water tank.
Specifically, first by water temperature meansigma methods T in water tankadMinima T with N number of preset temperature1Relatively, according to sentencing Determine whether have hot water in result determines water tank.
If Tad≥T1, say, that there is hot water in water tank, then by TadWith TnRelatively, whether to be full of heat in determining water tank Water, say, that whether the hot water amount in water tank is 100%, if Tad<Tn, now, it is not filled hot water in water tank, then By TadOrder and T2, T3..., Tn-1Compare, the hot water amount in determining water tank.
Certainly, the present invention is to TadComparison with N number of preset temperature can also use other mode, such as by TadSuccessively with N number of preset temperature T1、T2、…、TnCompare, and according to above-described embodiment according to TadSuccessively with N number of preset temperature T1、T2、…、TnComparative result determine the hot water amount in water tank.Above-mentioned to TadComparative sequence with N number of preset temperature It is only the illustration to the present invention, not for limiting protection scope of the present invention.
Advantageously, in some examples of the present invention, use 10 preset temperatures to detect the hot water amount in water tank, can make The result of hot water amount is more accurate, and the step simultaneously compared is less, improves the detection efficiency of electric heater.
Additionally, when to the detection of water the temperature inside the box, respectively the temperature at the bottom in water tank, middle part and top is detected, And the temperature computation meansigma methods that will have detected.The temperature spot now needing detection is less, and wider range of detection, makes detection Process is simple and result is more accurate.
Further, the method can also further include whether the water detecting in described water tank is currently being used.Accordingly Ground, N number of preset temperature includes first group of N number of preset temperature T1’、T2’、…、Tn' and second group of N number of preset temperature T1”、 T2”、…、Tn”。
Specifically, if the water in water tank is currently being used, then by TadWith first group of N number of preset temperature T1’、T2’、…、 Tn' compare.
If the water in water tank is not used by, then by TadWith second group of N number of preset temperature T1”、T2”、…、Tn" carry out Relatively.
Below a concrete example of the control method of the electric heater of the present invention is briefly described.
This embodiment uses 10 temperature preset values to detect hot water amount, and table 1 shows first group of N number of preset temperature T1’、T2’、…、Tn’.Table 2 shows second group of N number of preset temperature T1”、T2”、…、Tn”。
Table 1
T1 T2 T3 T4 T5 T6 T7 T8 T9 T10
31℃ 34℃ 38℃ 42℃ 47℃ 51℃ 58℃ 64℃ 67℃ 71℃
Table 2
Water heater volume T1 T2 T3 T4 T5 T6 T7 T8 T9 T10
<50L 37℃ 40℃ 44℃ 48℃ 55℃ 62℃ 65℃ 68℃ 71℃ 73℃
≥50L 37℃ 40℃ 43℃ 46℃ 49℃ 53℃ 57℃ 61℃ 65℃ 68℃
With reference to Tables 1 and 2, the control method of this electric heater comprises the following steps:
As it is shown on figure 3, the first step, detect respectively the top of water tank, middle part and bottom temperature, and calculate meansigma methods Tad
Second step: whether the water in detection water tank is currently being used, if the water in water tank is currently being used, proceeds to the 3rd step,
If the water in water tank is not used by, then proceed to the 4th step.
3rd step: first group of preset temperature T of selected use1’、T2’、…、T10' detect.Relatively TadPre-with first group If minima T in temperature1', if Tad< T1', then hot water quantity display function is 0%;If Tad≥T1', then compare TadWith first Maximum of T in group preset temperature10', if if Tad≥T10', then hot water quantity display function is 100%;If Tad< T10', then make TadOrder and T2’、T3’、…、T9' compare, for T2’、T3’、…、T9Any T in 'i', if Tad≥Ti', Then with Ti+1' compare, if TadLess than Ti+1', then stop comparing, and determine that hot water amount is (i/10) × 100%, aobvious Show the hot water amount determined.
4th step, second group of preset temperature T of selected use1”、T2”、…、T10" detect, and store up according to electric heater The volume size of hydrospace judges to use the preset temperature value selected.Relatively TadWith minima T in second group of preset temperature1", If Tad< T1", then hot water quantity display function is 0%;If Tad≥T1", then compare TadWith the maximum in first group of preset temperature T10", if if Tad≥T10", then hot water quantity display function is 100%;If Tad< T10", then make TadOrder and T2”、T3”、…、 T9" compare, for T2”、T3”、…、T9In " any Ti", if Tad≥Ti", then with Ti+1" carry out Compare, if TadLess than Ti+1", then stop comparing, and determine that hot water amount is (i/10) × 100%, the hot water that display determines Amount.
Describe electric heater according to embodiments of the present invention with reference to the accompanying drawings in detail.
As shown in Figure 4, this electric heater includes: water tank 10, heater block 20, multiple temperature sensor 30, controller (not shown) and display (not shown).
Specifically, water tank 10 is provided with water inlet pipe 11 and outlet pipe 12, and water inlet pipe 11, for water tank 10 inner water-supply, goes out Water pipe 12 is the passage that water tank interior-heat water flows out.Water inlet pipe 11 and outlet pipe 12 cooperation have predetermined water in making water tank 10 Amount.
Heater block 20 is located in water tank 10, for heating the water in water tank 10.Wherein heater block 20 includes It is positioned at the first of water tank 10 axis direction add heat pipe 21 and be positioned at second bottom water tank 10 and add heat pipe 22
Multiple temperature sensors 30 are located on water tank 10, the water temperature of differing heights position in detecting water tank 10.
Described controller is connected with multiple temperature sensors 30 respectively, for the temperature multiple temperature sensors 30 being detected Calculate meansigma methods TadAnd make meansigma methods T of water temperatureadWith N number of preset temperature T1、T2、…、TnCompare and according to comparing Result determines the hot water amount in water tank 10.Wherein N is the integer more than or equal to 2, and i is more than or equal to 1 and to be less than the whole of N Number, Ti<Ti+1.Controller can be also used for controlling whether heat generating components 20 works simultaneously, when the hot water amount detected is less than needing During the amount of asking, the most described controller can control heater block 20 and begin to warm up, and when hot water amount is not less than demand, then controls Device can control heating element heater 20 and stop heating.
The hot water amount of the water tank 10 that described controller determines is shown by coupled described display, the heat in display water tank The water yield is so that user uses.
Electric heater according to embodiments of the present invention, uses multiple temperature sensor 30 to detect differing heights position in electric heater Temperature value, and judge hot water amount according to the comparative result of the meansigma methods of the multiple temperature detected with N number of preset temperature.Adopt Use this electric heater, use temperature value-taking mean value process, decrease the incidental error of temperature detection, improve accuracy rate.Meanwhile, Hot water amount in using N number of preset temperature to judge electric heater, can improve the precision of testing result without increasing electrical part And increase cost.Simple in construction, easy to use, can be with real time inspection hot water amount, in order to use, improve electric heater Performance.
In some embodiments of the invention, by TadCompare with N number of preset temperature, and according to TadWith N number of default temperature Hot water amount in the comparative result judgement water tank of degree, specifically, if Tad<T1, say, that meansigma methods T of water temperaturead Less than the minima of N number of preset temperature, at this point it is possible to think there is no hot water in water tank, determine that the hot water amount in this water tank is 0%。
If additionally, Tad≥Tn, in other words, TadMore than the maximum of N number of preset temperature, at this point it is possible to think water tank Inside it is filled with hot water, it is determined that described hot water amount is 100%.
Additionally, when meansigma methods T of water temperatureadTime between the maximum and minima of N number of preset temperature, the hot water in water tank Amount is between 0 to 100%, by meansigma methods T of water temperatureadWith the T in N number of preset temperature2、T3、…Tn-1Compare. Now, for the T in N number of preset temperatureiIf, Ti≤Tad< Ti+1, say, that water temperature meansigma methods TadN number of pre- If two adjacent temperature value T in temperatureiAnd Ti+1Between, the hot water amount in then determining this water tank is (i/n) × 100%.
In a concrete example of above-described embodiment, first can be determined that mean temperature T in water tankadWhether less than T1If, It is that the hot water amount in display water tank is 0%;If it is not, then judge TadWhether not less than TnIf, then in showing water tank Hot water amount is 100%, then can stop immediately heating to save the energy, when using the hot water in water tank, because constantly entering Cold water, the water temperature in water tank is also constantly in change, then hot water amount changes as well as the water temperature in water tank and changes.User Can hot water amount's service condition in real time inspection water tank.
Specifically, first by water temperature meansigma methods T in water tankadMinima T with N number of preset temperature1Relatively, according to sentencing Determine whether have hot water in result determines water tank.
If Tad>T1, say, that there is hot water in water tank, then by TadWith TnRelatively, whether to be full of heat in determining water tank Water, say, that whether the hot water amount in water tank is 100%, if Tad≤Tn, now, in water tank, it is not filled hot water, Then by TadOrder and T2, T3..., Tn-1Compare, the hot water amount in determining water tank.
Certainly, the present invention is to TadComparison with N number of preset temperature can also use other mode, such as by TadSuccessively with N number of preset temperature T1、T2、…、TnCompare, and according to above-described embodiment according to TadSuccessively with N number of preset temperature T1、T2、…、TnComparative result determine the hot water amount in water tank.Above-mentioned to TadComparative sequence with N number of preset temperature It is only the illustration to the present invention, not for limiting protection scope of the present invention.
In the embodiment as shown in fig .4, temperature sensor 30 is three, and three temperature sensors 30 include the first temperature Sensor the 31, second temperature sensor 32 and three-temperature sensor 33, wherein the first temperature sensor 31 is used for detecting The temperature of water tank 10 inner bottom part, the second temperature sensor 32 is the temperature at middle part, the 3rd temperature sensing in detecting water tank 10 Device 33 is for detecting the temperature of water tank 10 inner bottom part.Thus, improve accuracy and the detection efficiency of detection structure.Certainly, The quantity of temperature sensor 30 is not limited by the present invention, it would however also be possible to employ the temperature sensor 30 of more than three.
Advantageously, this electric heater also include water flow sensor 40, water flow sensor 40 be located at described water inlet pipe 11 or In at least one in outlet pipe 12, for detecting whether the water being currently in use in water tank 10.Specifically, when water tank 10 When interior water is used, have current and pass through water inlet pipe 11 and outlet pipe 12, now by being located at water inlet pipe 11 or outlet pipe Water flow sensor 40 detection on 12 has current to pass through, to judge that the water in water tank 10 is used.
The most N number of preset temperature includes first group of N number of preset temperature T1’、T2’、…、Tn' and second group of N number of preset temperature T1”、T2”、…、Tn”。
Wherein when the water detected in water tank 10 is currently being used described controller by TadWith first group of N number of preset temperature T1’、T2’、…、Tn' compare, and when the water detected in water tank 10 is not used by described controller by TadWith Two groups of N number of preset temperature T1”、T2”、…、Tn" compare.
Thus, make testing result accurate, convenient use.
Additionally, it will be understood by those skilled in the art that, in the present invention, the display of hot water amount can also have other Form, such as, in other embodiments of the present invention, if Tad≤T1, it is determined that described hot water amount is 0%;If Tad> Tn, it is determined that described hot water amount is 100%;If Ti< Tad≤Ti+1, it is determined that described hot water amount is (i/n) × 100%.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term It is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be Any one or more embodiments or example combine in an appropriate manner.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary, Being not considered as limiting the invention, those of ordinary skill in the art is without departing from the principle of the present invention and the situation of objective Under above-described embodiment can be changed within the scope of the invention, revise, replace and modification.

Claims (8)

1. the control method of an electric heater, it is characterised in that said method comprising the steps of:
1) multiple water temperatures of differing heights position in the water tank of described electric heater are detected;
2) by meansigma methods T of the plurality of water temperatureadWith N number of preset temperature T1、T2、…、TnCompare and according to comparing Result determines the hot water amount in described water tank, and wherein N is the integer more than or equal to 2, and i is more than or equal to 1 and less than N Integer, Ti<Ti+1;With
3) described hot water amount is shown;
Described N number of preset temperature includes first group of N number of preset temperature T1’、T2’、…、Tn' and second group of N number of preset temperature T1”、T2”、…、Tn”;
Described control method also includes whether the water detecting in described water tank is currently being used;
If the water in described water tank is currently being used, then by TadWith described first group of N number of preset temperature T1’、T2’、…、 Tn' compare,
If the water in described water tank is not used by, then by TadWith described second group of N number of preset temperature T1”、T2”、…、 Tn" compare.
The control method of electric heater the most according to claim 1, it is characterised in that
If Tad<T1, it is determined that described hot water amount is 0%;
If Tad≥Tn, it is determined that described hot water amount is 100%;
If Ti≤Tad< Ti+1, it is determined that described hot water amount is (i/n) × 100%.
The control method of electric heater the most according to claim 2, it is characterised in that
First by TadWith T1Relatively,
If Tad≥T1, then by TadWith TnRelatively,
If Tad<Tn, then by TadOrder and T2, T3..., Tn-1Compare.
The control method of electric heater the most according to claim 1, it is characterised in that described preset temperature is 10, Described step 1) include the temperature that detects bottom, middle part and top in described water tank respectively.
5. the electric heater of a kind, it is characterised in that including:
Water tank, described water tank is provided with water inlet pipe and outlet pipe;
Heater block, described heater block is located in described water tank;
Multiple temperature sensors, the plurality of temperature sensor is located on described water tank, in detecting described water tank respectively not Water temperature with height and position;
Controller, described controller is connected with the plurality of temperature sensor respectively, for the plurality of temperature sensor being examined Meansigma methods T of the multiple water temperatures measuredadWith N number of preset temperature T1、T2、…、TnCompare and true according to comparative result Hot water amount in fixed described water tank, wherein N is the integer more than or equal to 2, and i is the integer more than or equal to 1 and less than N, Ti<Ti+1;With
Display, described display is connected with described controller, is used for showing described hot water amount;
Water flow sensor, described water flow sensor is located at least one in described water inlet pipe or described outlet pipe, uses In detecting whether the water that is currently in use in described water tank;
Wherein said N number of preset temperature includes first group of N number of preset temperature T1’、T2’、…、Tn' and second group N number of preset Temperature T1”、T2”、…、Tn”;
Wherein when the water detected in described water tank is currently being used described controller by TadWith described first group N number of preset Temperature T1’、T2’、…、Tn' compare, and when the water detected in described water tank is not used by described controller by Tad With described second group of N number of preset temperature T1”、T2”、…、Tn" compare.
Electric heater the most according to claim 5, it is characterised in that described controller is at Tad<T1Time determine described heat The water yield is 0, at Tad≥TnTime determine that described hot water amount is 100% and at Ti≤Tad< Ti+1Time determine that described hot water amount is (i/n) × 100%.
Electric heater the most according to claim 6, it is characterised in that described controller is first by TadWith T1Relatively, Then at Tad≥T1Time by TadWith TnRelatively, finally at Tad<TnTime by TadOrder and T2, T3..., Tn-1Compare Relatively.
Electric heater the most according to claim 5, it is characterised in that described sensor is three and is respectively used to detection The temperature at bottom, middle part and top in described water tank, described preset temperature is 10.
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