CN108571826A - Electric water heater control method and electric water heater - Google Patents
Electric water heater control method and electric water heater Download PDFInfo
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- CN108571826A CN108571826A CN201710135649.8A CN201710135649A CN108571826A CN 108571826 A CN108571826 A CN 108571826A CN 201710135649 A CN201710135649 A CN 201710135649A CN 108571826 A CN108571826 A CN 108571826A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 322
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000003287 bathing Methods 0.000 claims abstract description 207
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 238000005485 electric heating Methods 0.000 claims abstract description 21
- 238000004364 calculation method Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 6
- 230000001343 mnemonic effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 7
- 238000000205 computational method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 2
- VNFVKWMKVDOSKT-LREBCSMRSA-N (2r,3r)-2,3-dihydroxybutanedioic acid;piperazine Chemical compound C1CNCCN1.OC(=O)[C@H](O)[C@@H](O)C(O)=O VNFVKWMKVDOSKT-LREBCSMRSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- 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
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Control For Baths (AREA)
Abstract
The invention discloses a control method of an electric water heater and the electric water heater, comprising the following steps: (1) collecting bathing time set by userTurning on the electric heating tube; (2) in the heating process of the electric heating pipe, the current temperature in the water tank is periodically detected(ii) a (3) Detecting whether the dynamic heating pipe is opened or not, and calculating the hot water supply rate of the dynamic heating pipe(ii) a (4) Calculating and displaying the residual bath time t; (5) when the rest bath time t is increased to the bath timeWhen the water heater is started, the electric heating pipe stops heating, and the current temperature in the water tank is detected to be Rmax(ii) a (6) And periodically continuing to calculate the residual bathing time t and updating and displaying. According to the control method of the electric water heater, a user can freely customize the bathing time, the system collects the bathing time set by the user, the electric heating pipe is started to heat to the temperature which can meet the bathing time of the user, and the residual bathing time can be periodically calculated and displayed in the whole bathing process of the user, so that the residual bathing time is more visual.
Description
Technical field
The present invention relates to electric heater technical fields, specifically, being to be related to a kind of control method of electric water heater and electric heating
Hydrophone.
Background technology
Most water heater currently on the market, user setting heating temperature, it is not known that corresponding bathing duration, it should set
It sets how many degree and just enough meets bathing duration user at all without concept.Maximum temperature is arrived in most of setting, and portion is only used in bathing
Water, remaining hot water is divided to slattern substantially.And the time for being heated to maximum temperature is long, and user needs to wait for ratio
Relatively long.
Water heater currently on the market can only see the temperature of water tank inner storing water, cannot show that the water storage of Current Temperatures can
The bathing duration of satisfaction, when discharge water bathing when, due to being mixed into cold water, displays temperature drastically declines, and is not meant to hot water in case
It measures the bathing duration that disclosure satisfy that drastically to decline, conversely, as not knowing that surplus hot water can be more with bathing during user's bathing
Prolonged bath, it is possible to be in the presence of just having used up without after a bath hot water.
Invention content
The present invention, and can not in order to solve the bathing duration that existing water heater cannot show that current hot water amount disclosure satisfy that
Meet the technical issues of user individual directly sets bathing duration, it is proposed that a kind of control method of electric water heater can solve
The above problem.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following scheme：
A kind of control method of electric water heater, includes the following steps：
(1), acquisition user sets bathing time t0, at least open electric heating tube；
(2), during electric heater for heating, it is periodically detected current water the temperature inside the box Rt, calculate water tank inner volume
For V0, temperature RtHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water that can mix out
V works as Rt＜ R0When, V=0；
(3), whether detection dynamic heat pipe is opened, if dynamic heat pipe is opened, calculates the hot water supply of dynamic heat pipe
Rate H0, namely：Dynamic heat pipe can be by the cold water of entrance from temperature R in unit intervalJIt is heated to bathing temperature R0Water,
If dynamic heat pipe is not opened, hot water recharge rate H0It is 0；
(4), it calculates residue bathing time t and shows：
Wherein, F0For average bathing flow, V0Namely the capacity of water heater；
(5), when remaining bathing time t rises to bathing time t0When, stop electric heater for heating, detects current water tank at this time
Interior temperature is Rmax；
(6), periodically continue to calculate remaining bathing time t, and update display：
Wherein, vnTo add up discharge time tn1When the bathing water that is consumed,It is obtained for acquisition or Equivalent Calculation
Bathing flow, tn2To stop the accumulative time for opening dynamic heat pipe after electric heater for heating；VmaxTo be by water tank inner volume
V0, temperature RmaxHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water that can mix out.
Further, equivalent bath water amount V computational methods are in step (2)：
Wherein, μ is hot water delivery rate coefficient in courage, 0 μ≤1 ＜.
Further, hot water recharge rate H in step (3)0Computational methods be：
H0=λ H
λ is that dynamic heat feeds range of value, and 0 ＜ λ≤1, P is the power of dynamic heat pipe, and c is the specific heat of water.
Further, in step (6), bathing flowAcquisition methods be：
By detecting cold water flow FREquivalent bathing flow is calculated as bathing flowWherein, equivalent bathing flow
To come from the hot water in water tank and coming from flow of the cold water of tap water after water mixing valve, it is equal to hot water flow and cold water stream
Measure FRThe sum of, hot water flow is by hot water temperature RC, bathing temperature R0And cold water temperature RJIt determines：
Wherein, hot water temperature RCBy be arranged in hot-water line or water tank in temperature sensor measure.
Further, in step (6), bathing flowAcquisition methods be：
When discharging water, m practical bathing flow f1, f2, f3 ... fm is acquired in a calculating cycle,
Bathing flow in this calculating cycleWherein, m is positive integer.
Further, the average bathing flow F in step (4)0To set constant, if passing through mnemonic learning user's
The average value that bathing flow rate calculation when dry bathing obtains.
Further, the temperature R of cold waterJAcquisition modes are the temperature sensor acquisition by being arranged in cold water pipe, or
The cold water temperature acquired in person's mnemonic learning each month, the average cold water temperature for calculating each month are preserved, are being used
When, according to current affiliated month, the cold water temperature angle value that is averaged accordingly is searched as RJ。
Further, when detecting that dynamic heat pipe do not open, and further include that alarm carries when residue bathing time t ＜ t1
The step of showing, t1 ＞ 0.
Further, bathing temperature R0Value range at 38 DEG C~42 DEG C, if electric heater is provided with thermostatic valve, bathing
Temperature R0It is obtained by acquiring.
Based on aforementioned any one of them control method of electric water heater, the present invention proposes a kind of electric heater simultaneously, packet
It includes：
Water tank, respectively with for into cold water water inlet pipe and go out the outlet pipe of hot water and connect；
Electric heater unit, including electric heating tube and dynamic heat pipe, the electric heating tube are used to carry out the water in water tank
Whole heating；The dynamic heat pipe is used to carry out local heating to the water in water tank；
At least one water tank temperature sensor is arranged in the water tank, the current temperature for detecting water in the water tank
Degree；
Control device is connect respectively with the electric heater unit, water tank temperature sensor, for receiving the water tank temperature
The temperature data of sensor acquisition, acquisition user set the setting bathing time, calculate the remaining bathing time, and the control electricity
Heating device is turned on or off；
Display device is connect with the control device, when for showing remaining bathing that the control device is calculated
Between.
The control method of electric water heater of the present invention, user can freely customize bathing duration, and system acquisition user setting is washed
It bathes the time and opens electric heater for heating to the temperature that can meet user's bathing duration, avoid user to hot water temperature in water tank
It is associated with the problem of no concept causes blindly to heat between bathing duration, and then can heat or owe to heat to lead to avoid crossing
The problem of causing waste of energy or reducing bath comfort, in addition, this method can be during user's entire bathing periodically
Remaining bathing duration is calculated, and is shown to user, allows user that there is the bathing time that current hot water amount disclosure satisfy that intuitive
Solution.
In addition, prompting by the way that dynamic heat pipeline time is arranged, in the case where bath water amount is less, can assist adding
Heat extends the remaining bathing time, avoids the embarrassment that hot water not enough uses in time.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of embodiment flow chart of control method of electric water heater proposed by the invention；
Fig. 2 is a kind of embodiment schematic diagram of electric heater proposed by the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
In order to solve the technical issues of current water heater does not support user directly to set bathing duration, the present embodiment proposes
A kind of control method of electric water heater, can support user directly to set bathing duration, and user can be set by remote control control
Or set by the control panel of electric heater, how the present embodiment is mainly to electric heater according to setting bathing duration execution
Corresponding computer heating control and remaining bathing duration calculation are described in detail, it should be noted that the electric heating in the present embodiment
Hydrophone is defaulted as that the electric heater of static heating and dynamic heat can be carried out at the same time, namely has electric heating tube and dynamic simultaneously
The tank of the electric heater of heating tube, electric heater is water tank, heating element such as electric heating tube and the setting of dynamic heat pipe
In water tank, the water tank of electric heater is that the water in closed namely water tank is full always, can be entered simultaneously when releasing hot water
Cold water supplements, and the water released is equal with the water of entrance, and therefore, the volume of the water in water tank is equal with the capacity of water tank,
When in use, it needs to carry out to work as based on electric heating tube when a large amount of cool water heatings, be heated with static when being carried out at the same time dynamic heat
When, heating environment is complex, the calculating of remaining bathing duration also corresponding more complex, the control method of electric water heater of the present embodiment
The above problem can be solved without exception, as a preferred embodiment, is included the following steps：
S1, acquisition user set bathing time t0, at least open electric heating tube；
This method supports user directly to set the mode of bathing time, and often in actual use, user is to temperature
There is no direct concept, and there is most direct bathing requirement express, this method to be set with conventional water heater the bathing time
Determine mode to compare, it is more user-friendly.
S2, during electric heater for heating, be periodically detected current water the temperature inside the box Rt, calculate and by water tank inner volume be
V0, temperature RtHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water V that can mix out,
Work as Rt＜ R0When, V=0；
Whether S3, detection dynamic heat pipe are opened, if dynamic heat pipe is opened, calculate the hot water recharge rate of dynamic heat pipe
H0, namely：Dynamic heat pipe can be by the cold water of entrance from temperature R in unit intervalJIt is heated to bathing temperature R0Water, if
Dynamic heat pipe is not opened, hot water recharge rate H0It is 0；
By the hot water recharge rate H for calculating dynamic heat pipe0, calculate for convenience when dynamic heat is opened, heating
Contribution of the hot water amount to the remaining bathing time (may actually add since either dynamic heat pipe heats water to how many degree
The temperature of heat can be higher than bathing temperature), for a user, the water for releasing bathing temperature is only needed during bathing,
Therefore, dynamic heat pipe heats water to how high temperature when this step is not concerned with practical heating, it is only necessary to know dynamic heat
Dynamic heat pipe can be by the cold water of entrance from temperature R in the unit interval when unlatchingJIt is heated to bathing temperature R0Water,
As long as the power of dynamic heat pipe is constant, the water for heating specific temperature is accordingly constant.
S4, it calculates residue bathing time t and shows：
Wherein, F0For average bathing flow, V0Namely the capacity of water heater, electric heater once it is determined that, V0It mutually should be fixed
Value；
S5, bathing time t is risen to as remaining bathing time t0When, stop electric heater for heating, detects current water tank at this time
Interior temperature is Rmax；
S6, periodically continue to calculate remaining bathing time t, and update display：
Wherein, vnTo add up discharge time tn1When the bathing water that is consumed,It is obtained for acquisition or Equivalent Calculation
Bathing flow, tn2To stop the accumulative time for opening dynamic heat pipe after electric heater for heating；VmaxTo be by water tank inner volume
V0, temperature RmaxHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water that can mix out,
When user discharges water bathing, timing, the equivalent bathing as consumed with the product of bathing flow are carried out to discharge time
Water, if dynamic heat is opened at this time, to be that water tank feeds H in the unit interval0Equivalent bathing water, therefore, as one
A dynamic process, remaining equivalent bathing water is equal to total equivalent bathing water V and subtracts the equivalent bathing consumed in water tank
Water, while plus the equivalent bathing water of dynamic heat supply, when not discharging water at certain moment, which is consumed equivalent
Bathing water is zero, when dynamic heat is not opened, hot water recharge rate H0It is zero, this method is used the hot water either generated
The hot water amount of amount or consumption is converted to bathing water, plus-minus calculating can be directly carried out, regardless of whether carrying out the bathing that discharges water
And dynamic heat whether is currently opened, it can accurately calculate the remaining bathing time.
The control method of electric water heater of the present embodiment, user can freely customize bathing duration, system acquisition user setting
The bathing time opens electric heater for heating to the temperature that can meet user's bathing duration, avoids user to hot water temperature in water tank
Degree and the problem of no concept causes blindly to heat that be associated between bathing duration, and then can heat or owe to heat to avoid crossing
The problem of leading to waste of energy and bath comfort is reduced due to hot water amount less, in addition, this method can entirely be washed in user
Remaining bathing duration is periodically calculated during bath, and is shown to user, the bathing for allowing user disclosure satisfy that current hot water amount
Time has intuitive understanding.
Remaining bathing time computational methods in the present embodiment are particularly suitable for having dynamic and static heating function simultaneously
The calculating of electric heater is converted to equivalent bathing water in such a way that bathing water is equivalent by the work(for doing heating tube, knot
Close bathing flow, either current single static heating or static dynamic heat simultaneously, and no matter how complicated heating factors are, mostly because
Element is converted to unified expression way, can accurately calculate user's residue bathing time.
In addition, prompting by the way that dynamic heat pipeline time is arranged, in the case where bath water amount is less, can assist adding
Heat extends the remaining bathing time, avoids the embarrassment that hot water not enough uses in time.
Equivalent bath water amount V computational methods are in step S2：
Wherein, μ is hot water delivery rate coefficient in courage, 0 μ≤1 ＜.Different type energy
Reach hot water delivery rate difference, such as the machine of 40L, it is possible to release the hot water of 39L.
Hot water recharge rate H in step S30Computational methods be：
H0=λ H
λ is that dynamic heat feeds range of value, and 0 ＜ λ≤1, P is the power of dynamic heat pipe, and c is the specific heat of water.Heat
Water recharge rate H0Derivation method it is as follows：
According to law of conservation of energy, Q=cm Δ T=Pt indicate the water that can make m mass under P power under the heating t times
It increases.
Above-mentioned formula is converted, can be obtained：
P units kw, t unit min, c=4.2 × 10J/ (kg DEG C), the units/kg of m, m=ρ v, the here quality etc. of 1L water
In 1kg, approximate 1m=1L.Therefore, H0Indicate that dynamic supply in 1 minute can make H0Water is risen from inflow temperature RJIt is increased to and washes
Bath temperature R0。
In step S6, bathing flowAcquisition methods tool there are two types of, one of which use indirect mode Equivalent Calculation：
By detecting cold water flow FREquivalent bathing flow is calculated as bathing flowWherein, equivalent bathing flow
To come from the hot water in water tank and coming from flow of the cold water of tap water after water mixing valve, it is equal to hot water flow and cold water stream
Measure FRThe sum of, hot water flow is by hot water temperature RC, bathing temperature R0And cold water temperature RJIt determines：
Wherein, hot water temperature RCBy be arranged in hot-water line or water tank in temperature sensor measure.Due in reality
During the use of border, user is separately to buy water heater with shower with bathing, therefore, is not particularly suitable for directly measuring bathing
Flow preferably mixes water flow namely bathing flow by the cold water flow indirect gain measured in cold water pipe.Calculation basis is still
It is bathing temperature and hot water temperature, cold water temperature, cold water flow it has been determined that when needing flow to be FRTemperature is RJIt is cold
It is R that water, which is mixed into temperature,0Bathing temperature when, according to heat conservation law, required hot water flow also accordingly determines.
Bathing flowAnother acquisition methods be directly measured by using flow sensor：
When discharging water, m practical bathing flow f1, f2, f3 ... fm is acquired in a calculating cycle,
Bathing flow in this calculating cycleWherein, m is positive integer.
The bathing flow that this kind of mode obtainsPrecision is high, suitable for facilitating the electric hot water of installation bathing flow sensor
Device.
Step S4 belongs to static heating process, namely not yet starts the bathing that discharges water, and therefore, practical bathing flow is zero, needs
To be bathing flow assignment, the theory remaining bathing time that disclosure satisfy that with current water the temperature inside the box be calculated, in order to enable washing
Bath flow is more nearly practical bathing flow, and then improves the accuracy of the remaining bathing time t calculated, average bathing flow
F0It is empirical value to set constant, or bathing flow rate calculation when by the bathing several times of mnemonic learning user obtains
Average value.
The temperature R of cold waterJAcquisition modes are by the temperature sensor acquisition being arranged in cold water pipe or mnemonic learning
The cold water temperature acquired in each month, the average cold water temperature for calculating each month is preserved, when in use, according to current
Affiliated month, the cold water temperature angle value that is averaged accordingly was searched as RJ。
When detecting that dynamic heat pipe do not open, and further include the steps that alarm when residue bathing time t ＜ t1,
T1 ＞ 0, because this kind of situation is susceptible to user and there is not also bathing to finish the situation that will be supplied without hot water, by being carried
Show, user can choose whether to carry out dynamic heat according to actual conditions, if to extend remaining bathing time or user just
User terminates bathing at once, can select to be not turned on dynamic heat.This method especially significant the advantage is that will not blindly by
Temperature in water heater is heated to higher temperature, and user leads to a large amount of waste of energy using endless, and is not in that hot water amount subtracts
The situation of hot water cut-off is caused to occur less, it is only necessary to which the bathing time demand for meeting user heats.
Bathing temperature R0Value range at 38 DEG C~42 DEG C, if electric heater is provided with thermostatic valve, bathing temperature R0Pass through
Acquisition obtains, and precision is high by way of acquiring and obtaining, and can accordingly increase some hardware costs.
Embodiment two
The present embodiment proposes a kind of electric heater, based on control method recorded in embodiment one, as shown in Fig. 2,
Including：
Water tank 11, respectively with for into cold water water inlet pipe 12 and go out the outlet pipe 13 of hot water and connect；
Electric heater unit, including electric heating tube 141 and dynamic heat pipe 142, electric heating tube 141 are used for in water tank 11
Water carries out whole heating；Dynamic heat pipe 142 is used to carry out local heating to the water in water tank 11；
At least one water tank temperature sensor 15 is arranged in water tank 11, the Current Temperatures for detecting water in water tank 11；
Control device 16 is connect with electric heater unit, water tank temperature sensor 15 respectively, for receiving water tank temperature sensing
The temperature data of the acquisition of device 15, acquisition user set the bathing time, calculate the remaining bathing time, and control electric heater unit
It is turned on or off；
Display device 17 is connect with control device 16, the remaining bathing time being calculated for display control unit 16.
When electric-opening works on electric heater, control method includes the following steps：
S1, control device 16 acquire user and set the bathing time, and it (can be individually to open at least to open electric heating tube 141
Electric heating tube or electric heating tube and dynamic heat pipe are opened simultaneously)；User passes through control panel or remote controler input setting
Bathing time, corresponding control unit can collect the setting bathing time.
S2, during heating, water tank temperature sensor 15 is periodically detected actual temperature R in current water tankt, and send
To control device, it is V that control device 16, which is calculated water tank inner volume,0, temperature RtHot water and temperature be RJCold water mix extremely
Bathing temperature R0When the equivalent bathing water V that can mix out, work as Rt＜ R0When, V=0；This process belongs to static heating process,
The bathing that is, user does not discharge water also, equivalent bathing water V are according to by actual temperature R in current water tanktIt mixes to bathing temperature
R0When the theoretical maximum bathing water that can mix out, with the raising of water temperature in water tank, which accordingly increases
Add.
S3, control device 16 detect whether dynamic heat pipe 142 is opened, if dynamic heat pipe is opened, calculate dynamic heat
The hot water recharge rate H of pipe0, namely：Dynamic heat pipe can be by the cold water of entrance from temperature R in unit intervalJIt is heated to bathing temperature
Spend R0Water, if dynamic heat pipe is not opened, hot water recharge rate H0It is 0；
By the hot water recharge rate H for calculating dynamic heat pipe0, calculate for convenience when dynamic heat is opened, heating
Contribution of the hot water amount to the remaining bathing time (may actually add since either dynamic heat pipe heats water to how many degree
The temperature of heat can be higher than bathing temperature), for a user, the water for releasing bathing temperature is only needed during bathing,
Therefore, dynamic heat pipe heats water to how high temperature when this step is not concerned with practical heating, it is only necessary to know dynamic heat
Dynamic heat pipe can be by the cold water of entrance from temperature R in the unit interval when unlatchingJIt is heated to bathing temperature R0Water,
As long as the power of dynamic heat pipe is constant, the water for heating specific temperature is accordingly constant.
S4, control device 6 calculate remaining bathing time t and are shown by display device 17：
Wherein, F0For average bathing flow, V0Namely the capacity of water heater；
S5, bathing time t is risen to as remaining bathing time t0When, stop electric heater for heating, detects current water tank at this time
Interior temperature is Rmax；
S6, control device periodically continue to calculate remaining bathing time t, and update display：
Wherein, vnTo add up discharge time tn1When the bathing water that uses,It is obtained for acquisition or Equivalent Calculation
Bathing flow, tn2To stop the accumulative time for opening dynamic heat pipe after electric heater for heating；VmaxTo be by water tank inner volume
V0, temperature be R hot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water that can mix out,
That is maximum equivalent bathing water carries out timing when user discharges water bathing to discharge time, and the product with bathing flow is
Equivalent bathing water through consuming, if dynamic heat is opened at this time, to be that water tank feeds H in the unit interval0Equivalent wash
Bath water amount, therefore, as a dynamic process, remaining equivalent bathing water is equal to total equivalent bathing water V and subtracts in water tank
The equivalent bathing water consumed is gone, while plus the equivalent bathing water of dynamic heat supply, it, should when not discharging water at certain moment
The equivalent bathing water that moment is consumed is zero, when dynamic heat is not opened, hot water recharge rate H0It is zero, this method uses
The hot water amount that the hot water amount either generated still consumes is converted to bathing water, can directly carry out plus-minus calculating, nothing
By whether carrying out discharging water bathing and currently whether open dynamic heat, the remaining bathing time can be accurately calculated.
Algorithmic formula based on when other rate-determining steps and control device of this water heater calculate can join embodiment
Recorded in one, this will not be repeated here.The water heater of the present embodiment can support user directly to set the bathing time, and calculate phase
The heating time answered carries out computer heating control, and can show that the remaining bathing time, simultaneously real-time update was shown, can be made to user
Obtain user has intuitive understanding to hot water amount in water tank, freely controls the bathing time, better usage experience is brought to user.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the those of ordinary skill in domain is made in the essential scope of the present invention, should also belong to this hair
Bright protection domain.
Claims (10)
1. a kind of control method of electric water heater, which is characterized in that include the following steps：
(1), acquisition user sets bathing time t0, at least open electric heating tube；
(2), during electric heater for heating, it is periodically detected current water the temperature inside the box Rt, it is V to calculate water tank inner volume0、
Temperature is RtHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water V that can mix out, work as Rt
＜ R0When, V=0；
(3), whether detection dynamic heat pipe is opened, if dynamic heat pipe is opened, calculates the hot water recharge rate H of dynamic heat pipe0,
Namely：Dynamic heat pipe can be by the cold water of entrance from temperature R in unit intervalJIt is heated to bathing temperature R0Water, if dynamic
Heating tube is not opened, hot water recharge rate H0It is 0；
(4), it calculates residue bathing time t and shows：
Wherein, F0For average bathing flow, V0Namely the capacity of water heater；
(5), when remaining bathing time t rises to bathing time t0When, stop electric heater for heating, detects temperature in current water tank at this time
Degree is Rmax；
(6), periodically continue to calculate remaining bathing time t, and update display：
Wherein, vnTo add up discharge time tn1When the bathing water that is consumed,It is washed for what acquisition or Equivalent Calculation obtained
Bathe flow, tn2To stop the accumulative time for opening dynamic heat pipe after electric heater for heating；VmaxTo be V by water tank inner volume0、
Temperature is RmaxHot water and temperature be RJCold water mix to bathing temperature R0When the equivalent bathing water that can mix out.
2. control method of electric water heater according to claim 1, which is characterized in that equivalent bath water amount V meters in step (2)
Calculation method is：
Wherein, μ is hot water delivery rate coefficient in courage, 0 μ≤1 ＜.
3. control method of electric water heater according to claim 2, which is characterized in that hot water recharge rate H in step (3)0Meter
Calculation method is：
H0=λ H
λ is that dynamic heat feeds range of value, and 0 ＜ λ≤1, P is the power of dynamic heat pipe, and c is the specific heat of water.
4. control method of electric water heater according to claim 1, which is characterized in that in step (6), bathing flowObtain
The method is taken to be：
By detecting cold water flow FREquivalent bathing flow is calculated as bathing flowWherein, equivalent bathing flow be from
In in water tank hot water and come from flow of the cold water of tap water after water mixing valve, be equal to hot water flow and cold water flow FRIt
With hot water flow is by hot water temperature RC, bathing temperature R0And cold water temperature RJIt determines：
Wherein, hot water temperature RCBy be arranged in hot-water line or water tank in temperature sensor measure.
5. control method of electric water heater according to claim 1, which is characterized in that in step (6), bathing flowObtain
The method is taken to be：
When discharging water, m practical bathing flow f1, f2, f3 ... fm is acquired in a calculating cycle,
Bathing flow in this calculating cycleWherein, m is positive integer.
6. according to claim 1-5 any one of them control method of electric water heater, which is characterized in that being averaged in step (4)
Bathing flow F0Bathing flow rate calculation to set constant, or when by the bathing several times of mnemonic learning user obtains flat
Mean value.
7. according to claim 1-5 any one of them control method of electric water heater, which is characterized in that the temperature R of cold waterJIt obtains
Mode is the cold water temperature for obtaining or being acquired in mnemonic learning each month by the temperature sensor being arranged in cold water pipe
Degree, the average cold water temperature for calculating each month are preserved, and when in use, according to current affiliated month, are searched corresponding flat
Equal cold water temperature angle value is as RJ。
8. according to claim 1-5 any one of them control method of electric water heater, which is characterized in that when detecting dynamic heat
Pipe is not opened, and further includes the steps that alarm, t1 ＞ 0 when residue bathing time t ＜ t1.
9. according to claim 1-6 any one of them control method of electric water heater, which is characterized in that bathing temperature R0Value
Range is at 38 DEG C~42 DEG C, if electric heater is provided with thermostatic valve, bathing temperature R0It is obtained by acquiring.
10. a kind of electric heater based on any one of the claim 1-9 control method of electric water heater, which is characterized in that packet
It includes：
Water tank, respectively with for into cold water water inlet pipe and go out the outlet pipe of hot water and connect；
Electric heater unit, including electric heating tube and dynamic heat pipe, the electric heating tube are used to carry out the water in water tank whole
Heating；The dynamic heat pipe is used to carry out local heating to the water in water tank；
At least one water tank temperature sensor is arranged in the water tank, the Current Temperatures for detecting water in the water tank；
Control device is connect with the electric heater unit, water tank temperature sensor respectively, for receiving the water tank temperature sensing
The temperature data of device acquisition, acquisition user set the setting bathing time, calculate the remaining bathing time, and the control electrical heating
Device is turned on or off；
Display device is connect with the control device, the remaining bathing time being calculated for showing the control device.
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| CN112361608A (en) * | 2020-10-27 | 2021-02-12 | 安徽佳暖节能科技有限公司 | Control method of intelligent ultrahigh-frequency electric water heater |
| CN112762607A (en) * | 2021-02-09 | 2021-05-07 | 北京舍得叔叔科技有限公司 | Water storage type water heater and equivalent hot water amount measurement and control method and measurement and control device thereof |
| CN116007198A (en) * | 2021-09-18 | 2023-04-25 | 芜湖美的厨卫电器制造有限公司 | Electric water heater, control method and device thereof and storage medium |
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Application publication date: 20180925 |