CN104024761A

CN104024761A - Apparatus for supplying hot water and method for the same

Info

Publication number: CN104024761A
Application number: CN201280064932.1A
Authority: CN
Inventors: 賈珍成; 盧真焕; 文铉晳; 金财满; 李咏栽; 牟昞宣; 朴时俊; 金旲桓
Original assignee: Woongjin Coway Co Ltd
Current assignee: Coway Co Ltd
Priority date: 2011-12-30
Filing date: 2012-12-20
Publication date: 2014-09-03
Anticipated expiration: 2032-12-20
Also published as: CN104024761B; JP2015503723A; RU2014131452A; RU2615086C2; KR101906340B1; KR20130079079A

Abstract

A device to supply hot water and a method to supply the same are provided to extract hot water at correct target temperature by generating the hot water considering change of heating capacity with a heater according to voltage variation of a commercial alternating current power source. A device to supply hot water comprises a heater (10), a water discharging valve (20), a temperature sensor (31), and a control unit (40). The heater heats water by heating capacity of the heater. The water discharging valve controls amounts of water discharged from the heater. The temperature sensor measures temperature of the water in which is discharged. The control unit controls an opening range of the water discharging valve according to change of the temperature when the water is discharged.

Description

Hot water supply apparatus and hot water supply method

Technical field

The present invention relates to hot water supply apparatus and hot water supply method, and relate more specifically to Direct-type hot water supply apparatus and Direct-type hot water supply method for fast allocation hot water.

Background technology

For the hot water supply apparatus of water purifier etc., can classify as and heater is arranged on to water tank type hot water supply apparatus in water tank or where necessary by carry out the Direct-type hot water supply apparatus of heating water with heater.

Water tank type hot water supply apparatus filters the room temperature water supplied with by water system and to obtain, drinkablely purifies waste water, heats and be stored in purifying waste water and supplying with the water of heating to user in water tank with filter etc.In the case, water tank type hot water supply apparatus comprises the boiler of the hot water that the cleaned water tank of purifying waste water that filtration under apotheca temperature state is good and storage are heated to uniform temperature.It can be configured to be supplied to purifying waste water boiler and be heated into hot water by the heater being arranged in boiler.

Yet, in water tank type hot water supply apparatus, no matter whether use hot water, the water temperature in water tank all should remain on and preset at temperature, thereby consumes standby power, and owing to also should being provided with boiler, so can need sufficient space.Equally, about thering is the feature of the water of high specific heat, need to reach tens seconds stand-by times to a few minutes.

Thus, Direct-type hot water supply apparatus used recently the Direct-type hot water supply apparatus that requires immediately to heat and supply feedwater according to the hot water supply from user, even if but can not provide the hot water with the desired target temperature of user during the initial water spray stage.

Summary of the invention

Technical problem

An aspect of of the present present invention is provided for Direct-type hot water supply apparatus and the Direct-type hot water supply method of fast allocation hot water.

The solution of problem

According to an aspect of the present invention, provide a kind of hot water supply apparatus, this hot water supply apparatus comprises: heater, and this heater adds with heater the water that thermal capacity heats introducing; Injection valve, this injection valve regulates the water yield from heater spray; Temperature sensor, the injection temperation of the water that this temperature sensor measurement sprays; And controller, this controller is controlled the aperture of injection valve according to the variable quantity of injection temperation value.

At this, controller can calculate the difference between injection temperation and target temperature, and according to this difference, controls pari passu the aperture of injection valve.

At this, hot water supply apparatus also can comprise: the voltage detection unit that detects the service voltage of being supplied with by power supply, wherein, this controller can add thermal capacity by calculating heater with service voltage, and by add the variable quantity of thermal capacity and injection temperation value with heater, sets the aperture of injection valve.

At this, when input requirements distributes the hot water distributing signal of hot water or when passing through the time interval presetting, voltage detection unit can detect service voltage.

At this, voltage detection unit changes into DC (direct current) voltage by the service voltage as AC (alternating current), and the DC voltage transforming is quantized, to detect the amplitude of service voltage.

At this, controller can add the thermal capacity preset proportion factor corresponding to heater, and is set as making the difference between this aperture and injection temperation and target temperature proportional the aperture of injection valve.

At this, when injection temperation is during higher than target temperature, controller injection valve can be opened to injection temperation and target temperature between the proportional degree of difference, and when injection temperation is during lower than target temperature, controller injection valve can cut out to injection temperation and target temperature between the proportional degree of difference.

At this, when injection temperation is equal to or less than preheating reference temperature, controller can operate to heater the time that preheats (or warm-up period) presetting before opening injection valve.

At this, controller can be in the situation that the injection temperation that records be lower will preheat the time and be set as extending.

At this, controller can be measured the last water spraying time and use stand-by period between water spraying time next time, and sets according to injection temperation the time of preheating.

At this, controller can will preset aperture and be set as the initial opening of injection valve.

At this, controller can receive from measure injection heating device water the temperature that becomes a mandarin implantation temperature sensor the temperature that becomes a mandarin, by become a mandarin temperature, heater of use, add thermal capacity and target temperature and calculate from the injection water yield of heater spray and according to the emitted dose calculating, set the initial opening of injection valve.

At this, controller can be measured the last water spraying time and use stand-by period between water spraying time next time, and according to set the initial opening of injection valve by stand-by period and injection temperation.

According to another aspect of the invention, a kind of hot water supply method is provided, and this hot water supply method comprises: when input hot water supply signal, set injection valve initial opening, regulate from the injection flow rate of heater spray and injection valve opened to the initial injection operation that presets aperture; And the water spray temperature from heater spray is adjusted to the injection control operation of target temperature by controlling the aperture of injection valve.

Initial injection operation can comprise: according to injection temperation, will preset aperture and be set as the initial opening setting operation of the initial opening of injection valve; And the initial opening operation of opening injection valve according to the setting aperture of injection valve.

In initial opening setting operation, can receive the temperature that becomes a mandarin of the water that flows into heater, can becoming a mandarin by use, the heater of temperature, heater adds thermal capacity and target temperature calculates the injection water yield from heater spray, and can set subsequently according to the emitted dose calculating the initial opening of injection valve.

Initial injection operation also can comprise: measuring the service voltage of being supplied with by power supply and the heater heating calculation of capacity that adds thermal capacity by calculate heater with service voltage operates.

In the operation of heater heating calculation of capacity, when input requirements distributes the hot water distributing signal of hot water or when time interval through presetting, by measurement service voltage, calculate heater and add thermal capacity.

In the operation of heater heating calculation of capacity, the alternating current service voltage of being supplied with by power supply can change into DC voltage, and the DC voltage transforming can quantize, to measure the amplitude of service voltage.

In initial opening setting operation, can measure the last water spraying time and use stand-by period between water spraying time next time, and can be by set the initial opening of injection valve by stand-by period and injection temperation.

Initial injection operation also can be included in the process of preheating when the injection temperation recording is equal to or less than while preheating reference temperature heater is operable to the operation that preheats that the water in heater is heated.

In preheating operation, in the situation that the lower time of preheating can being set as of the injection temperation recording extends.

In spraying control operation, can regulate according to the variable quantity of injection temperation the aperture of injection valve, wherein, when injection temperation is during higher than target temperature, injection valve can be opened to injection temperation and target temperature between the proportional degree of difference, and when injection temperation is during lower than target temperature, injection valve can cut out to target temperature and injection temperation between the proportional degree of difference.

In spraying control operation, can by use become a mandarin temperature, heater adds thermal capacity and target temperature calculates the injection water yield from heater spray, and can regulate according to the injection water yield calculating the aperture of injection valve.

Advantageous effects of the present invention

In the situation that according to the hot water supply apparatus of various embodiments of the present invention and hot water supply method, can provide the hot water with the desired target temperature of user in initial injection time course.

Equally, owing to minimizing for extracting the control operation of target temperature, can reduce for extracting the required energy of hot water.

Equally, owing to considering that the variation that adds thermal capacity according to the heater of the voltage change of commercial ac power power supply produces hot water, so can distribute the hot water with accurate target temperature.Equally, owing to being applied to the voltage of heater by direct measurement, calculating heater and add thermal capacity, the hot water with the desired target temperature of user is provided even internationally, wherein, the voltage magnitude of commercial ac power power supply is different.

Accompanying drawing explanation

Fig. 1 illustrates the block diagram of hot water supply apparatus according to an embodiment of the invention.

Fig. 2 is the flow chart that hot water supply method is according to an embodiment of the invention shown.

Fig. 3 is the flow chart that the initial injection operation of hot water supply method is according to an embodiment of the invention shown.

Figure 4 and 5 are the curve maps that illustrate from the injection temperation of the water that hot water supply apparatus sprays according to an embodiment of the invention.

The best mode carrying out an invention

Hereinafter, describe with reference to the accompanying drawings each embodiment in detail, thereby can easily implement these embodiment by technical staff that the invention relates to the field.When description is of the present invention, if be considered to depart from spirit of the present invention for the detailed explaination of relevant known function or structure, will save this explaination, but person skilled in art will be understood that this explaination.Equally, similar Reference numeral in whole description for similar parts.

Should be understood that, when element is known as " being connected to " another element, this element can directly be connected with another element, or also can have intervenient element.By contrast, when element is known as " being directly connected to " another element, just do not have intervenient element.In addition, unless clear and definite contrary, describe, otherwise word " comprises " and will be interpreted as and imply and comprise described element such as the modification of " having comprised " or " comprising ", but do not get rid of any other element.

With reference to Fig. 1, hot water supply apparatus can comprise heater 10, injection valve 20, temperature sensor 31, implantation temperature sensor 32 and controller 40 according to an embodiment of the invention.

Hereinafter, with reference to Fig. 1, hot water supply apparatus is according to an embodiment of the invention described.

Heater 10 can add the water that thermal capacity heats introducing by heater.Available watt (W) represents that the heater relevant with the power consumption of heater 10 adds thermal capacity.Heater 10 can add by the heater presetting the water that thermal capacity heats introducing equably.

The introducing water of receiving from heater 10 added to heat can to add time (or time period) of thermal capacity and heater 10 heating waters proportional with heater.Thus, when keeping equably the heater of heater 10 to add thermal capacity, can be proportional with the time period of heater 10 heating waters to the heat that adds of the introducing water of receiving from heater 10.At this, the time period of the water that heater 10 heating is introduced can spray the required time via injection valve 20 from heater according to the water of introducing to be determined, thus, can regulate the heat time according to the aperture of injection valve 20.

By controller 40, carry out the operation that opens or closes of control heater 10, and when input hot water distributing signal, controller 40 can be connected heater 10, thereby adds with heater the water that thermal capacity heats introducing.

Yet, when being supplied to the voltage of heater 10 or current unevenness when even, cannot keep equably heater to add thermal capacity.Heater adds thermal capacity and can calculate by least two in use heater voltage V, heater current I and heater resistance R (P=V*I=V^2/R=I^2*R), and can have in fact approximately 15% voltage variety to the commercial ac power power supply of heater 10 power supplies.Thus, the voltage that is distributed to heater 10 can change according to the voltage variety of commercial ac power power supply, and this can cause heater to add the variation of thermal capacity.

In general, permit the voltage variety of commercial ac power power supply as tolerable error range, therefore, the heater based on voltage variety adds the difference of thermal capacity and can not do to consider.Yet, when similarly being that such heat time of Direct-type hot water supply apparatus is shorter and need to supply with while having the hot water of accurate target temperature, can need to consider the error that the voltage variety due to commercial ac power power supply causes.Thus, can additionally be configured with for detection of by commercial ac power power supply, be the voltage detection unit of the service voltage amplitude supplied with of power supply.That is to say, about introducing the heat time of the water of heater 10, can the service voltage amplitude based on being measured by voltage detection unit consider that heater adds thermal capacity and sets.

Specifically, voltage detection unit can be carried out halfwave rectifier, filtering and the pressure drop of the alternating current voltage to being supplied with by power supply to convert it into DC voltage, and by AD converter (ADC), the analogue value of DC voltage is quantized, to obtain thus service voltage value.For example, in the situation that using commercial AC 220V power supply, the service voltage of supplying with from power supply can change to 253V from 198V due to voltage change, and voltage detection unit can be divided voltage range with 10V interval, and measure service voltage by any in 200V, 210V, 220V, 230V, 240V and 250V.Thus, the service voltage that controller 40 can be measured based on correspondence calculates the opening degree that heater adds thermal capacity and sets injection valve 20.

Yet, for the power consumption while preventing voltage detecting, just voltage detection unit can be only with preheating setting time interval or only detect voltage when the input hot water distributing signal and supply with.

In addition,, if the amplitude of any the known voltage and current of supplying with from power supply can be calculated heater and add thermal capacity, therefore also can utilize the current detecting unit that detects the supply electric current of being supplied with by power supply to replace voltage detection unit.

The adjustable water yield from heater 10 ejections of injection valve 20.As above discuss like that, by regulating from the emitted dose of the water of heater 10 ejections, the adjustable time period of introducing the water of heater 10 in the interior heating of heater 10.Specifically, when injection valve 20 opening degrees are when larger, the time of being heated the water of introducing by heater 10 can shorten, and when injection valve 20 reduces aperture, can lengthen for time of the water introduced by heater 10 heating.Thus, controller 40 can be by regulating the aperture of injection valve 20 that the temperature of the water from heater 10 ejections is controlled to target temperature.

At this, according to the control signal of carrying out self-controller 40, injection valve 20 can be by regulating the sectional area size of open flow passage to regulate the aperture of injection valve 20 or the opening time of adjusting injection valve 20.

At this, injection valve 20 can comprise that the flow channel such as dish etc. blocks unit, to block part or all of flow channel that water distributes from heater 10 along it.At this, by regulating the sectional area size of being blocked the flow channel that unit blocked by flow channel, adjustable per unit area is from the water yield of heater 10 ejections.

Equally, injection valve 20 can regulate time per unit from the water yield of heater 10 ejections by periodically repeatedly opening and closing at short notice injection valve 20, and the periodicity of injection valve 20 opens and closes and can implement by pulse width modulation (PWM).For example, injection valve 20 receives the control signal of that transmit by controller 40, to have predetermined amount of time impulse form, and when pulse is high, injection valve 20 is opened, and when pulse is low, injection valve 20 can cut out.At this, when in the pulse of being transmitted by controller 40, the number of high impulse increases, injection valve can spray more substantial water from heater 10 by time per unit.

Thus, the injection water yield of time per unit, introduce the water of heater 10 jet velocity can be by determining with injection valve 20.When jet velocity accelerates, the time period of introducing the water of heater 10 in the interior heating of heater 10 shortens, and therefore, can reduce from the temperature of the water of heater 10 ejections.On the contrary, when jet velocity reduces, introduce the water of heater 10 and stay the time period increase in heater 10, thereby the heat time of the water of being introduced by heater 10 increases, and the temperature of the water obtaining from heater raises.

At this, the aperture of injection valve 20 can be adjusted to completely cut-off or aperture can be set according to the stage of predetermined number continuously from opening completely.For example, aperture can be divided into from being opened to the four-stage of cut-off completely completely.That is, the first stage can be to end completely, and second stage can be 1/3 to open, and the phase III can be 2/3 to open, and fourth stage can be to open completely.In the case, injection valve 20 can be by coming to set aperture with the stage of predetermined number with stepper motor.

At this, injection valve 20 can have initial opening, and it is target temperature that the injection temperation while take initial injection is controlled.That is, for when obtaining water by heater 10, distribute the water with target temperature, can set by controller 40 initial opening of injection valve 20.

Temperature sensor 31 can be measured the injection temperation of injection water.As temperature sensor 31, as long as it can measure water temperature, can adopt any temperature sensor.As shown in fig. 1, temperature sensor 31 can be arranged between injection valve 20 and heater 10.Thus, when injection valve 20 ends completely, the injection temperation of being measured by temperature sensor 31 can be the water temperature being stored in heater 10.

Hot water supply apparatus also can comprise implantation temperature sensor 32 according to an embodiment of the invention.Implantation temperature sensor 32 measurable flows enter the temperature that becomes a mandarin of the water of heater 10.After being used in, the temperature that becomes a mandarin recording sets the initial opening of injection valve 20.

When input hot water distributing signal, controller can operate heater 10, and sprays the water with target temperature in order to start from initial water spray, and controller 40 can be set the initial opening of injection valve 20.

As above discuss, the injection temperation being recorded by temperature sensor 31 can equal to be stored in the temperature of the water in heater 10.Thus, by distinguish the initial opening of injection valve 20 according to injection temperation in the situation that initially spraying water, can be by the most suitable aperture of testing to obtain injection valve 20.That is, according to the injection temperation recording, the aperture presetting can be set as to the initial opening of injection valve 20, thus, can start to spray the water close to target temperature from initial water spray.

At this, controller 40 can be measured the last water spraying time and use stand-by period between water spraying time next time, and according to set the initial opening of injection valve 20 by stand-by period and injection temperation.That is, controller 40 can be considered to set initial opening by stand-by period and injection temperation.

Equally, controller 40 can receive the temperature that becomes a mandarin of the water being injected in heater 10, and by the temperature that becomes a mandarin, the heater receiving, adds thermal capacity and target temperature and calculate the injection flow rate from heater ejection.Thus, the emitted dose that controller 40 can calculate by use is set the initial opening of injection valve 20.

For example, controller 40 can pass through equation the initial injection flow rate that calculating is sprayed from heater 10, and can set according to the emitted dose calculating the initial opening of injection valve 20.That is, controller 40 can set more accurately the initial opening of injection valve 20 when 32 receptions of implantation temperature sensor become a mandarin temperature.At this, V is the volume of injection water, and w is that the heater of heater 10 adds thermal capacity, and c is specific heat of water, and ρ is the density of water, and Δ t is the heat time, and T1 is target temperature, and T is the temperature that becomes a mandarin.

After initial water spray, controller 40 can be controlled according to the variable quantity of injection temperation value the aperture of injection valve.

As above discuss like that, flow into the heat time that the water temperature of heater 10 can add thermal capacity and heater 10 with heater to increase pro rata.

In general, keep equably heater to add thermal capacity, therefore, controller 40 can be by regulating the aperture of injection valve 20 to carry out the heat time of the water of control heater heating introducing.Thus, controller 40 can be according to the injection temperation being recorded by temperature sensor 31, by regulating the aperture of injection valve 20 that the temperature of the water from heater 10 ejections is controlled to target temperature.

Specifically, controller 40 can obtain the difference between injection temperation and target temperature and the aperture of injection valve 20 is controlled to aperture and this difference is proportional.; when injection temperation is during higher than target temperature; controller 40 injection valve can be opened to injection temperation and target temperature between the proportional degree of difference; and when injection temperation is during lower than target temperature, controller 40 injection valve can cut out to injection temperation and target temperature between the proportional degree of difference.At this, when regulating the aperture of injection valve 20, the aperture of injection valve 20 can by use according to injection valve close and injection temperation and target temperature between the ratio expression formula that produces of difference or by using according to injection temperation, by the form of testing acquisition, set.

Yet as mentioned above, the heater of heater 10 adds thermal capacity can be changed by the voltage variety of commercial ac power power supply.Thus, in order to regulate more accurately temperature, preferably, even can consider that variable quantity that heater that the voltage variety due to commercial ac power power supply causes adds thermal capacity sets the initial opening of injection valve 20.

So far, heater 10 also can comprise the voltage detection unit that detects the service voltage supplied with by power supply, and controller 40 can obtain heater by service voltage and adds thermal capacity.Specifically, can obtain the actual heater voltage value that puts on heater 10 by service voltage, and the actual heater of heater 10 add thermal capacity can be by calculating with heater voltage.That is, controller 40 can be by replacing with the resistance value of heater 10 and heater voltage for P=V*I=V^2/R calculates actual heater and add thermal capacity.

First, in order to set the initial opening of injection valve 20 corresponding to injection temperation, controller 40 can use the heater of Practical Calculation to add thermal capacity.That is, although injection temperation is identical, if the heater recording adds thermal capacity difference, initial opening can be different, and the injection temperation of the most suitable aperture of injection valve 10 can be according to initial water spraying time time and the heater that records add the experiment of thermal capacity cause and obtain.Thus, according to the injection temperation recording and heater, add the initial opening that aperture that thermal capacity sets can be set as injection valve 20, thus, can start just to spray the water close to target temperature from initial water spraying time.

Equally, when receiving the becoming a mandarin during temperature of the water that is injected in heater 10, from the initial injection flow rate V of heater 10 ejections, can replace with above-mentioned equation by the heater of Practical Calculation is added to thermal capacity in heater add thermal capacity w and calculate.In the case, heater adds thermal capacity and can calculate based on the actual voltage that puts on heater 10, adds the initial opening of the adjustable injection valve 20 of thermal capacity based on this heater, can regulate more accurately temperature thus.

After initial water spray, controller 40 can utilize the heater of Practical Calculation to add the aperture that thermal capacity controls according to the variable quantity of injection temperation value injection valve 20.Specifically, can set to heater and add the proportional scale factor of thermal capacity, and can and injection temperation and target temperature between difference set pro rata the aperture of injection valve 40.When regulating the aperture of injection valve 20, the aperture of injection valve 20 can add ratio expression formula that the difference between thermal capacity and injection temperation and target temperature produces or add thermal capacity and injection temperation is set by the form of testing acquisition by using according to heater by using according to heater.

For example, the service voltage being recorded by voltage detection unit can be quantified as 200V, 210V, 220V, 230V, 240V and 250V, and can the prior scale factor of setting of with good grounds each service voltage value.Thus, the aperture of injection valve 20 can regulate by the usage ratio factor and injection temperation.At this, scale factor can obtain by experiment.

At this, the service voltage of controller 40 based on being recorded by voltage detection unit directly calculates heater and adds thermal capacity, and therefore, controller can be controlled according to the voltage variety of commercial ac power power supply.Thus, can provide the water with the desired target temperature of user, and in the voltage range of commercial ac power power supply, be even that different international situations still need not be carried out setting up procedure.That is in the voltage range of commercial ac power power supply, be even, that different international situations still can provide uniformity.

Yet hot water supply apparatus is Direct-type hot water supply apparatus, therefore, although the initial opening of injection valve 20 is set according to injection temperation, the heating of the water of introducing can be inadequate, and the water without target temperature can be provided.Yet user can provide the expection of the water with target temperature to carry out injection water with his hot water supply apparatus, therefore, for hot water supply apparatus, importantly even in initial water spraying time, just provide the water with target temperature.

Therefore, the temperature of the water in being stored in heater 10 is during lower than pre-warmed reference temperature, controller 40 can be before opening injection valve 20, in preheating time period process operate heater 10.

That is, before the water in injection is stored in heater 10, can originally heat the water being stored in heater 10, to carry out, preheat the temperature that raises, after this can start injection water.In the case, after user has inputted the hot water distributing signal that requires supplying hot water in order to preheat by response time delay a period of time, but can start just to provide user's water of desired target temperature from initial water spraying time.

At this, hot water supply apparatus can by hot water supply to the supplying hot water again of horse back after user.In the case, because the temperature that is present in the water in heater 10 is close to target temperature, need not preheat.On the contrary, hot water supply apparatus can it by hot water supply to supplying hot water for a long time after user.For example, hot water supply apparatus can be at latter two hour supplying hot water of its initial supplying hot water.In the case, the water being present in heater 10 can turn cold, thereby has and the obvious difference of target temperature.

Thus, only when the temperature of the water storing for example, lower than preheating reference temperature, 60 degrees Celsius or when following, controller 40 can be checked and is stored in the water temperature in heater 10 by serviceability temperature sensor 31.

Equally, controller 40 time of preheating can be set for the water in being stored in heater 10 temperature, be injection temperation when lower, extend the time that preheats.Because the difference between injection temperation and target temperature increases, the time of preheating can be set as lengthening, fully to heat the water being stored in heater 10.On the contrary, when injection temperation is higher, because temperature is close to target temperature, the water being stored in heater 10 can be heated to the short period section that is enough to reach target temperature.

In addition, controller 40 can be measured the last water spraying time and use stand-by period between water spraying time next time, and according to the injection temperation recording, sets the aperture of the time of preheating and injection valve 20.

When stopping the input of hot water distributing signal, hot water supply apparatus can end injection valve 20 completely, and to cut off hot water supply, and in the case, the water being stored in heater 10 can be in being heated to the state of target temperature.Yet in the case, while no longer operating after hot water supply apparatus, the temperature that is stored in the water in heater 10 can reduce along with the time.Thus, the aperture of injection valve 20 can be considered with the temperature gap between stand-by period and target temperature and injection temperation and set.

In addition,, for fast allocation has the water of target temperature, controller 40 can regulate according to the variable quantity of injection temperation value the aperture of injection valve 20.With reference to Figure 4 and 5, the concrete operations relevant with the operation of controller 40 are described.

Fig. 4 (a) is the curve map that is illustrated in the water spray temperature in water spray situation for the first time.That is, Fig. 4 (a) illustrates and after nearest water spray, has passed through the curve map that sprays hot water after certain hour.With reference to Fig. 4 (a), can see that injection temperation converges as target temperature, and this can obtain by controlling as mentioned above the aperture of injection valve.

Yet, in the case, as shown in Fig. 4 (a), injection temperation based target temperature in injection temperation being converged for the process of target temperature fluctuates up and down, and according to the fluctuation of injection temperation, can to user, supply with very hot water or cold water undesirably.Equally, making injection temperation be stabilized to the required time of target temperature can lengthen.Thus, need to control injection valve 20 the fluctuation of injection temperation curve is reduced to minimum.

Fig. 4 (b) is the curve map that is illustrated in the water spray temperature in continuous water spray situation.Due to continuous dispensing hot water, injection temperation did not significantly rise in the starting stage as Fig. 4 (b), but occurred fluctuation in injection temperation curve.Thus, need to control injection valve 20 fluctuation is reduced to minimum.

Therefore, controller 40 can calculate the variable quantity of injection temperation value, and according to the variable quantity calculating, regulates the aperture of injection valve 20, thus fluctuation is reduced to minimum.

First, controller 40 can calculate the difference between injection temperation and target temperature, and determines that according to difference it is to spray water first or continuous water spray that hot water distributes.

For example, when the difference between injection temperation and target temperature is equal to or greater than default definite value, controller 40 can determine that hot water extracting is to spray water first, and when the difference between injection temperation and target temperature is less than default definite value, controller 40 can determine that hot water extracting is continuous water spray.

At this, can divide the starting stage of timing to obtain the difference between injection temperation and target temperature at beginning hot water, and in the case, can obviously distinguish water spray and continuous water spray first.

; in water spray situation first, the temperature that is stored in the water in heater 10 can be close to room temperature (about 26 degrees Celsius), but the in the situation that of continuous water spray; owing to having heated water, the temperature that is stored in the water in heater 10 can be no better than target temperature (85 degrees Celsius).

Thus, the difference based between injection temperation and target temperature, can distinguish water spray and continuous water spray first, and injection valve 20 can be according to water spray and continuous water spray are differently controlled first.

When hot water extracting is while spraying water first, controller 40 can calculate the variable quantity of injection temperation, and according to the variable quantity of injection temperation, regulates the aperture of injection valve 20.

Can obtain by measure difference between the injection temperation value that injection temperation and calculating records with each preheating setting time interval the variable quantity of injection temperation.At this, when the variable quantity of the injection temperation of calculating is equal to or greater than the first reference variation amount, can thinks that injection temperation raises fast, and in this case, can increase fluctuation number of times and the fluctuating range of injection temperation curve.

Thus, when variable quantity is defined as increasing fast, the aperture of injection valve 20 can be fixed on the aperture when calculating this variable quantity, and fixing aperture can be kept to the first predetermined amount of time.That is, in order to reduce the variable quantity of injection temperation, can make, according to injection temperation, the control of injection valve 20 apertures is stopped to the first preheating setting time section, thus, reduce as shown in Figure 5 the variable quantity of injection temperation.

With reference to Fig. 4 (a), even, in the situation that spraying water first, injection temperation can progressively increase along with time lapse, and the difference between injection temperation and target temperature can be less than default definite value.Thus, in the case, controller 40 can be controlled in the mode identical with continuous water spray the aperture of injection valve 20.Hereinafter, the operation to controller 40 in continuous water spray situation will be described in.

When as mentioned above hot water extracting being defined as to continuous water spray, can calculate the variable quantity of injection temperation, and whether variable quantity is equal to or greater than the second reference variation amount.The second reference variation amount can be the value that is less than the first reference variation amount.When variable quantity is equal to or greater than the second reference variation amount, can think that injection temperation slowly raises.

When injection temperation slowly raises, the fluctuating range and the fluctuation number of times that expect injection temperation increase, and thus, the aperture of injection valve 20 can be fixed as the aperture while calculating this variable quantity.At this, regular time section can be the second preheating setting time section shorter than the first preheating setting time section, and the variable quantity of injection temperation can reduce the control of injection valve 20 by stopping.

Thus, by regulate the aperture of injection valve 20 according to the variable quantity of injection temperation, injection temperation can converge fast as target temperature, and by shortening the control time of injection valve 20, can save the energy consumption that the control due to injection valve 20 produces.

Although not shown, water purifier can comprise hot water supply apparatus.Water purifier can comprise the polishing filter that filters the running water of being supplied with by main water supply system, and the water that is cleaned filter cleaning can be introduced to heater 10.After this, the water of purification can and spray to offer user by injection valve 20 subsequently in the interior heating of heater 10.At this, controller 40 can be controlled the aperture of injection valve 20, so that the temperature of dispensing water is adjusted to target temperature.Similarly, controller 40 can regulate by serviceability temperature sensor 31 and implantation temperature sensor 32 aperture of injection valve 20, and preheats introducing the water of heater 10 by control heater 10 and injection valve 20.

Fig. 2 is the flow chart that hot water supply method is according to an embodiment of the invention shown, and Fig. 3 is the flow chart that the initial injection operation of hot water supply method is according to an embodiment of the invention shown.

With reference to Fig. 2 and 3, hot water supply apparatus can comprise initial injection operation (S10) and spray control operation (S20) according to an embodiment of the invention.Initial injection operation (S10) can comprise initial opening assignment procedure (S11), preheat process (S12) and initial opening process (S13).

Hereinafter, with reference to Fig. 2 and 3, hot water supply method is according to an embodiment of the invention described.

In initial injection operation (S10), when input hot water supply signal, set for regulating from the initial opening of the injection valve of the injection flow rate of heater spray, and injection valve can be opened the aperture presetting.Initial injection operation (S10) is that heater starts the operation of water spray according to the hot water supply signal of input.In this operation, can set the initial opening of injection valve, to start just to distribute the water with target temperature from initial water spray.

Specifically, initial injection operation (S10) can comprise initial opening setting operation (S11) and initial opening operation (S13).

In initial opening setting operation (S11), can the aperture presetting be set as according to injection temperation to the initial opening of injection valve.

The temperature sensor being positioned between heater and injection valve by use is measured injection temperation.Before opening injection valve, injection temperation can be the temperature that is stored in the water in heater.Thus, be stored in the injection temperation that the temperature of the water in heater can open before injection valve by use and measure, and the initial opening of injection valve can be set according to the water temperature recording.

Specifically, the temperature that is stored in the water in heater can be according to changing since the last time water spray elapsed time, and therefore, the water temperature that needs basis to be stored in heater changes initial opening.

For example, when from last injection water through after one minute time, the temperature of the water of storage can be close to target temperature, therefore, need not the heating water long period, thus, can set initial opening to allow to spray relatively a large amount of water.

Meanwhile, when starting through two hours from last injection water, the temperature of the water of storage can be significantly different from target temperature, therefore, need to pass through one period of long period of heater heating water.In the case, can set initial opening to allow to spray the relatively little water yield.

At this, about depending on the initial opening of injection temperation, the initial opening cause experiment that the injection temperation that can record by basis changes injection valve obtains optimal initial opening, thus, can preset according to corresponding injection temperation the initial opening of injection valve.

In addition, as above discuss like that, can be according to elapsed time from nearest water spraying time, be the last injecting time and between water spraying time, change the temperature that is stored in the water in heater with the stand-by period next time.Thus, in initial opening setting operation (S11), measure the last water spraying time and use stand-by period between water spraying time next time, and can be by set the initial opening of injection valve with stand-by period and injecting time.

In initial opening setting operation (S11), except injection temperation, can further receive the temperature that becomes a mandarin of the water of introducing heater, based on this temperature that becomes a mandarin, can set the initial opening of injection valve.

Specifically, spray there is the initial injection flow rate of the required heater of the water of target temperature can be by using equation calculate, and can set according to the initial injection quantity of the heater calculating the initial opening of injection valve.That is, the initial opening of setting more accurately injection valve while becoming a mandarin temperature can received.At this, V is the volume of injection water, and w is that the heater of heater 10 adds thermal capacity, and c is specific heat of water, and ρ is the density of water, and Δ t is the heat time, and T1 is target temperature, and T2 is the temperature that becomes a mandarin.

Yet in the case, it is to set initial temperature uniformly that the heater based on heater adds thermal capacity, but in fact, the heater of heater adds thermal capacity and can change according to the voltage variety of the commercial ac power power supply to heater fed power supply.Thus, in order to set the more accurate initial opening of injection valve, need to consider that heater adds the variation of thermal capacity.

So far, initial injection operation (S10) also can comprise heater heating calculation of capacity operation (not shown), and in the operation of heater heating calculation of capacity, can measure the service voltage of being supplied with by power supply, and can add thermal capacity by calculating heater with service voltage.

Specifically,, in the operation of heater heating calculation of capacity, the alternating current service voltage of being supplied with by power supply can change into DC voltage, and the DC voltage transforming can quantize to detect service voltage.That is, the alternating current voltage of being supplied with by power supply is by halfwave rectifier, filtering and pressure drop to change into DC voltage, and after this, DC voltage quantizes to measure thus service voltage by ADC.Thus, when supplying with while changing to the commercial ac power voltage of 220V of 253V from 198V, power is divided with 10V interval, usings and measures as any in 200V, 210V, 220V, 230V, 240V and 250V.Because the resistance value of heater is uniformly, when measuring service voltage, can obtain the heater voltage value that puts on heater, and can add thermal capacity by easily calculating heater with P=V*I=V^2/R.

After this, in initial opening setting operation (S11), the heater calculating by use in the operating process of heater heating calculation of capacity adds the aperture that thermal capacity is set injection valve.Specifically, in initial opening setting operation (S11), although injection temperation is uniform, if the heater calculating adds thermal capacity difference, can change the aperture of injection valve, and the injection temperation can be according to first water spraying time time and the heater recording add the most suitable aperture that thermal capacity experimentally obtains injection valve.Thus, can add thermal capacity according to the injection temperation recording and heater and predetermined aperture is set as to the initial opening of injection valve.

Equally, when receiving the becoming a mandarin during temperature of the water that is injected in heater, can be by being above-mentioned equation V=by the heater heating volume replacement of Practical Calculation from the initial injection flow rate V of heater 10 ejections in heater add thermal capacity w and calculate.In the case, heater adds thermal capacity and can calculate based on the actual voltage that puts on heater 10, adds the initial opening of the adjustable injection valve 20 of thermal capacity based on this heater, can regulate more accurately temperature thus.

In addition,, in the operation of heater heating calculation of capacity, with each preheating setting time interval or when inputting hot water distributing signal, can measure the voltage of being supplied with by power supply, i.e. service voltage.This has reduced for measuring the required power consumption of service voltage.

Although set in initial opening setting operation (S11) for distributing the initial opening of the injection valve of the water with target temperature, if but the temperature that is stored in the water in heater is too low, the water distributing can fully not heated, and thus, can provide the water without target temperature.

Thus, initial injection operation (S10) also comprises and preheats operation (S12).When the injection temperation recording is when preheating reference temperature, heater can be operable to heating in preheating time period process and be stored in the water in heater.Water in being stored in heater when preheating reference temperature, preheated water before spraying.Thus, when preheating operation (S12) and spray water afterwards, can start to spray the water with target temperature from water spraying time first.

Specifically, when the injection temperation recording is during lower than 60 degrees Celsius, can preheat operation (S12), and in the situation that the injection temperation recording is lower, be set as lengthening, fully to preheat the water of heater the time that will preheat.

At this, initial opening setting operation (S11) and preheat operation (S12) and can carry out simultaneously, or can first preheat operation (S12), and in initial opening setting operation (S11), can consider that the temperature of pre-warmed water in preheating operation (S12) process sets the initial opening of injection valve.

In initial opening operation (S13), injection valve can be opened according to the aperture that presets of injection valve.By initial opening setting operation (S11) with preheat operation (S12) water with target temperature is provided, after this, can spray control operation (S20) so that the water with target temperature to be even provided when the injection water continuously.

In spraying control operation (S20), from the water of heater spray, can be adjusted to and there is target temperature by the aperture of control injection valve.

At this, the aperture of injection valve can regulate according to the variable quantity of injection temperation value.Specifically, when injection temperation is during higher than target temperature, injection valve can open to injection temperation and target temperature between the proportional degree of difference, and when injection temperation is during lower than target temperature, injection valve can cut out to injection temperation and target temperature between the proportional degree of difference.

When the heater of heater is when to add thermal capacity be uniform, from the temperature of the water of heater spray, can increase pro rata with the time period length of heater heating water.When opening injection valve to a greater degree, increase the injection flow rate of time per unit, thus, the time period of heater heating water shortens.Meanwhile, when closing injection valve, reduce the injection flow rate of time per unit, thus, the time period of heater heating water lengthens.

Thus, in spraying control operation (S20), can regulate from the temperature of the water of heater spray by the aperture of adjusting injection valve, and the temperature of the water from heater spray can be adjusted to and reach target temperature.

Equally, in spraying control operation (S20), can receive the temperature that becomes a mandarin of the water being injected in heater, and add by the become a mandarin heater of temperature, heater of use the aperture that thermal capacity and target temperature regulate injection valve.

Specifically, for the temperature that becomes a mandarin by use, heater add thermal capacity and target temperature sprays the water with target temperature, required emitted dose can be calculated, and the aperture of injection valve can be the emitted dose based on calculating regulated.

For example, spray there is the injection flow rate of the required heater of the water of target temperature can be by using equation V calculate, and can set according to the emitted dose of calculating the aperture of injection valve.That is, the aperture of setting more accurately injection valve while becoming a mandarin temperature can received.At this, V is the volume of injection water, and w is that the heater of heater 10 adds thermal capacity, and c is specific heat of water, and ρ is the density of water, and Δ t is the heat time, and T1 is target temperature, and T2 is the temperature that becomes a mandarin.

Yet, in the case, as above discuss like that, heater heating volume-variable, therefore, in order to control more accurately temperature, can be by using the actual heater of the heater of measuring in the operating process of heater heating calculation of capacity to add the aperture that thermal capacity regulates injection valve.

Specifically, can set to heater and add the proportional scale factor of thermal capacity, and can and injection temperation and target temperature between difference set pro rata the aperture of injection valve.So far, can use the ratio expression formula and the heater that according to difference between injection temperation and target temperature, produce to add thermal capacity, or can use according to heater and add thermal capacity and injection temperation by the form of testing generation.

Equally, during the temperature of the water in input injection heating device, the emitted dose of heater can be above-mentioned equation by the heater of Practical Calculation is heated to volume replacement in heater add thermal capacity (w) and calculate.

In spraying control operation (S20), in order to distribute rapidly the water with target temperature, can regulate by the variable quantity by injection temperation value the aperture of injection valve.

Fig. 4 (a) is the curve map that is illustrated in the water spray temperature in water spray situation first.That is, Fig. 4 (a) illustrates from nearest water spray through spraying the curve map of hot water after certain hour.With reference to Fig. 4 (a), can see that injection temperation converges as target temperature, and this can obtain by controlling as mentioned above the aperture of injection valve.

Yet, in the case, as shown in Fig. 4 (a), injection temperation based target temperature in injection temperation being converged for the process of target temperature fluctuates up and down, and according to the fluctuation of injection temperation, can to user, supply with very hot water or cold water undesirably.Equally, making injection temperation be stabilized to the required time of target temperature can lengthen.Thus, need to control injection valve the fluctuation of injection temperation curve is reduced to minimum.

Fig. 4 (b) is the curve map that is illustrated in the water spray temperature in continuous water spray situation.Due to continuous dispensing hot water, injection temperation did not significantly rise in the starting stage as Fig. 4 (b), but occurred fluctuation in injection temperation curve.Thus, need to control injection valve fluctuation is reduced to minimum.

Thus, in spraying control operation (S20), according to the variable quantity calculating, regulate the aperture of variable quantity and the injection valve of injection temperation value, so that fluctuation reduces to minimum.

First, in spraying control operation (S20), calculate the difference between injection temperation and target temperature, and determine that according to difference it is to spray water first or continuous water spray that hot water distributes.

When the difference between injection temperation and target temperature is equal to or greater than default definite value, hot water distribution can be defined as spraying water first, and when the difference between injection temperation and target temperature is less than default definite value, hot water distributes can be defined as continuous water spray.

At this, can the starting stage when hot water distributes beginning obtain the difference between injection temperation and target temperature, and in the case, can obviously distinguish water spray and continuous water spray first.

; in water spray situation first, the temperature that is stored in the water in heater can be close to room temperature (about 26 degrees Celsius), but the in the situation that of continuous water spray; due to heating water, the temperature that is stored in the water in heater 10 can be no better than target temperature (85 degrees Celsius).

Thus, the difference based between injection temperation and target temperature, can distinguish water spray and continuous water spray first, and can be according to water spray and continuous water spray are differently controlled injection valve 20 first.

Can obtain by measure difference between the injection temperation value that injection temperation value and calculating records with each preheating setting time interval the variable quantity of injection temperation.At this, when the calculating variable quantity of injection temperation is equal to or greater than the first reference variation amount, can think that injection temperation raises fast, and in this case, can increase fluctuation number of times and the fluctuating range of injection temperation curve.

Thus, when variable quantity is defined as increasing fast, the aperture of injection valve 20 can be fixed as the aperture when calculating this variable quantity, and fixing aperture can be kept to the first predetermined amount of time.That is, in order to reduce the variable quantity of injection temperation, can will to the control of the aperture of injection valve 20, stop the first preheating setting time section according to injection temperation, thus, reduce as shown in Figure 5 the variable quantity of injection temperation.

With reference to Fig. 4 (a), even, in the situation that spraying water first, injection temperation can progressively raise along with time lapse, and the difference between injection temperation and target temperature can be less than default definite value.Thus, in the case, controller 40 can be controlled in the mode identical with continuous water spray the aperture of injection valve 20.Hereinafter, by the control method being described in continuous water spray situation.

When hot water extracting is defined as continuous water spray as mentioned above, can calculate the variable quantity of injection temperation, and whether variable quantity is equal to or greater than the second reference variation amount.The second reference variation amount can be the value that is less than the first reference variation amount.When variable quantity is equal to or greater than the second reference variation amount, can think that injection temperation slowly raises.

When injection temperation slowly raises, the fluctuating range and the fluctuation number of times that expect injection temperation increase, and thus, the aperture of injection valve 20 can be fixed on the aperture while calculating this variable quantity.At this, regular time section can be the second preheating setting time section shorter than the first preheating setting time section, and the variable quantity of injection temperation can reduce by stopping the control of injection valve 20.

Although illustrated and described the present invention in conjunction with the embodiments, for those of ordinary skills, be apparent that, in the situation that do not depart from claims limit, the spirit and scope of the present invention, can modify and modification.

Claims

1. a hot water supply apparatus, comprising: heater, and described heater adds with heater the water that thermal capacity heats introducing; Injection valve, described injection valve regulates the water yield from described heater spray; Temperature sensor, the injection temperation of the water that described temperature sensor measurement sprays; And controller, described controller is controlled the aperture of described injection valve according to the variable quantity of injection temperation value.

2. hot water supply apparatus as claimed in claim 1, is characterized in that, described controller calculates the difference between described injection temperation and target temperature, and according to described difference, controls pari passu the aperture of described injection valve.

3. hot water supply apparatus as claimed in claim 1, it is characterized in that, also comprise the voltage detection unit that detects the service voltage of being supplied with by power supply, described controller adds thermal capacity by calculating described heater with described service voltage, and by add the variable quantity of thermal capacity and described injection temperation value with described heater, sets the aperture of described injection valve.

4. hot water supply apparatus as claimed in claim 3, is characterized in that, when input requirements extracts the hot water distributing signal of hot water or when passing through the time interval presetting, described voltage detection unit detects described service voltage.

5. hot water supply apparatus as claimed in claim 3, it is characterized in that, described voltage detection unit changes into DC (direct current) voltage by the service voltage as AC (alternating current), and the DC voltage transforming is quantized, to detect the amplitude of described service voltage.

6. hot water supply apparatus as claimed in claim 3, it is characterized in that, described controller adds the thermal capacity preset proportion factor corresponding to described heater, and the temperature difference that the aperture of described injection valve is set as between it and described injection temperation and target temperature is proportional.

7. hot water supply apparatus as claimed in claim 2, it is characterized in that, when injection temperation is during higher than target temperature, described controller by described injection valve open to described injection temperation and described target temperature between the proportional degree of difference, and when described injection temperation is during lower than described target temperature, described controller by described injection valve close to described injection temperation and described target temperature between the proportional degree of difference.

8. hot water supply apparatus as claimed in claim 2, is characterized in that, when injection temperation is equal to or less than preheating reference temperature, and the time that preheats that described controller presetted described heater operation before opening described injection valve.

9. hot water supply apparatus as claimed in claim 8, is characterized in that, described controller is in the situation that the injection temperation that records is lower will preheat the time and be set as extending.

10. hot water supply apparatus as claimed in claim 8, is characterized in that, described controller is measured the last water spraying time and use stand-by period between water spraying time next time, and sets according to injection temperation the time of preheating.

11. hot water supply apparatus as claimed in claim 1, is characterized in that, described controller will preset aperture and be set as the initial opening of injection valve according to injection temperation.

12. hot water supply apparatus as claimed in claim 11, it is characterized in that, described controller receive from measure the water that injects described heater the temperature that becomes a mandarin implantation temperature sensor the temperature that becomes a mandarin, by become a mandarin temperature, heater of use, add thermal capacity and target temperature and calculate from the injection water yield of described heater spray and according to the emitted dose calculating, set the initial opening of injection valve.

13. hot water supply apparatus as claimed in claim 11, it is characterized in that, described controller is measured the last water spraying time and use stand-by period between water spraying time next time, and according to set the initial opening of described injection valve by stand-by period and injection temperation.

14. 1 kinds of hot water supply methods, comprising: when input hot water supply signal, set injection valve initial opening, regulate from the injection flow rate of heater spray and the initial injection operation of injection valve being opened to initial opening; And the water spray temperature from heater spray is adjusted to the injection control operation of target temperature by controlling the aperture of injection valve.

15. hot water supply methods as claimed in claim 14, is characterized in that, the operation of described initial injection comprises: according to injection temperation, will preset aperture and be set as the initial opening setting operation of the initial opening of injection valve; And the initial opening operation of opening injection valve according to the initial opening of injection valve.

16. hot water supply methods as claimed in claim 15, it is characterized in that, in described initial opening setting operation, receive the temperature that becomes a mandarin of the water that flows into described heater, by use, becoming a mandarin, the heater of temperature, heater adds thermal capacity and target temperature calculates the injection water yield from described heater spray, and the initial opening of setting subsequently described injection valve according to the emitted dose calculating.

17. hot water supply methods as claimed in claim 15, it is characterized in that, described initial injection operates the heater heating calculation of capacity that also comprises the service voltage that measurement is supplied with by power supply and add thermal capacity by calculate heater with described service voltage and operates.

18. hot water supply methods as claimed in claim 17, it is characterized in that, in the operation of described heater heating calculation of capacity, when input requirements extracts the hot water distributing signal of hot water or when passing through the time interval presetting, by measuring described service voltage, calculate described heater and add thermal capacity.

19. hot water supply methods as claimed in claim 17, it is characterized in that, in the operation of described heater heating calculation of capacity, the alternating current service voltage of being supplied with by power supply is changed into DC voltage, and the DC voltage transforming is quantized, to measure the amplitude of service voltage.

20. hot water supply methods as claimed in claim 15, it is characterized in that, in described initial opening setting operation, measure the last water spraying time and use stand-by period between water spraying time next time, and by with the described initial opening of setting described injection valve by stand-by period and described injection temperation.

21. hot water supply methods as claimed in claim 16, it is characterized in that, the operation of described initial injection is also included in the process of preheating when the injection temperation recording is equal to or less than while preheating reference temperature described heater is operable to the operation that preheats that the water in heater is heated.

22. hot water supply methods as claimed in claim 21, is characterized in that, in preheating operation, in the situation that the injection temperation recording is lower, will preheats the time and be set as extending.

23. hot water supply methods as claimed in claim 14, it is characterized in that, in described injection control operation, according to the variable quantity of injection temperation, regulate the aperture of described injection valve, wherein, when described injection temperation is during higher than target temperature, by described injection valve open to described injection temperation and described target temperature between the proportional degree of difference, and when described injection temperation is during lower than described target temperature, by described injection valve close to described target temperature and described injection temperation between the proportional degree of difference.

24. hot water supply methods as claimed in claim 23, it is characterized in that, in described injection control operation, by use become a mandarin temperature, heater adds thermal capacity and target temperature calculates the injection water yield from described heater spray, and according to the injection water yield calculating, regulates the aperture of described injection valve.