CN104075371A - Electric heater and control method thereof - Google Patents
Electric heater and control method thereof Download PDFInfo
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- CN104075371A CN104075371A CN201310101184.6A CN201310101184A CN104075371A CN 104075371 A CN104075371 A CN 104075371A CN 201310101184 A CN201310101184 A CN 201310101184A CN 104075371 A CN104075371 A CN 104075371A
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Abstract
The invention provides a control method of an electric heater. The control method comprises the following steps: (S1) when the electric heater is started to operate, the environmental temperature is detected in real time; (S2) the electric heater is controlled to operate for first time with predetermined first power until the present environmental temperature reaches a predetermined temperature; (S3) the environmental temperature increasing speed within the first time is obtained; and a predetermined power table is inquired according to the environmental temperature increasing speed to obtain the operating power of the electric heater; (S4) the electric heater is controlled to operate for second time with the operating power; and (S5) the operating power of the electric heater is adjusted according to a variation value of the present environmental temperature within the second time and the predetermined power table; and the steps (S4) and (S5) are repeated. The control method can enable the electric heater to intelligently heat at a constant temperature, so that the continuous closing or opening of an electric switch is prevented, the energy conservation and the environmental protection are achieved, and the comfortable experience of users to the constant-temperature requirement is increased. The invention further provides the electric heater.
Description
Technical field
The present invention relates to heating system technical field, particularly the control method of a kind of electric heater and a kind of electric heater.
Background technology
At present, the heating mode of existing space heater has several as follows:
The first is that independent gear regulates, take peak power as example as 2000W, this kind of electric heater is adjustable with 800W-1200W-2000W third gear power, machine can only be foolproof according to user set gear work, and without temperature control, there is underheat or add the problem of heat waster, can not provide intelligent comfortable heating simultaneously.
The second is that gear adjusting+temperature regulates, and take peak power as example as 2000W, and this kind of electric heater is adjustable with 800W-1200W-2000W third gear power equally, under every grade of power, can regulate temperature.For example be set as 24 degree, 800W shelves, machine may can not be heated to room temperature 24 degree forever, be set as again 24 degree, 2000W shelves, machine can be heated to 24 degree, but is heated to 24 while spending when machine, stops heating, machine has a thermal inertia, make room temperature higher than 24 degree, cause waste, especially in the indoor sealing north preferably.The heating mode of this electric heater has certain temperature control effect, but not intelligent, has underheat or adds the problem of heat waster, and heating can not meet comfort need.
The third is that temperature adjusting+gear varies with temperature, take peak power as example as 2000W, this kind of electric heater is also adjustable with 800W-1200W-2000W third gear power, can regulate temperature, gear varies with temperature, and as shown in Figure 1, for example sets 24 degree, when environment temperature is less than 22 while spending, with high-grade state operation; When environment temperature is greater than 22 degree and is less than 24 while spending, with middle-grade state operation; When environment temperature is greater than 24 degree and is less than 26 while spending, with low-grade state operation; When environment temperature is greater than 26 while spending, stop heating.The heating mode of this electric heater has certain temperature control effect, but incomplete intelligence, has equally underheat or adds the problem of heat waster, and heating can not meet comfort need.
The 4th kind is the electric heater of regulation output power automatically, as shown in Figure 2, when environment temperature Ta is during lower than design temperature Ts, and Ta≤Ts-A(such as A=5 degree) time machine high-grade heating; When Ts-A≤Ta≤Ts-B(such as B=2 degree) time machine middle-grade heating; In the time of Ts-B≤Ta≤Ts, machine heats with low grade; In the time of Ta≤Ts, machine stops heating; In the time that lowering again, temperature recovers corresponding gear heating.As shown in Figure 3, wherein, top grade is for example 2000W for the power of the electric heater of this mode, temperature temporal evolution curve, and middle-grade is for example 1200W, and low grade is for example 800W.As shown in Figure 3, this mode can allow preferably machine with low-power operation set temperature range in, but the shortcoming which exists is: machine heating has a thermal inertia, in the time that machine is heated to Ta≤Ts, the Ta certain value that also can rise, we are assumed to be Tx, the size of Tx value is relevant with the characteristic of environment and machine itself, to always work in a temperature range be Ts-B≤Ta≤Tx to machine like this, if B is too little, can cause as the shortening of Fig. 3 time T 1, the electric switch of controlling 800W power is for example ceaselessly Closing Switch of relay, affect the life-span of electric switch, the sound of Simultaneous Switching closed and disconnected also may affect user's experience.If it is too large that B value is set, will cause temperature fluctuation range very large, also can affect the comfortable experience of user to constant temperature requirement.The temperature that thermal inertia is brought is simultaneously also energy dissipation (in dotted line circle) higher than the Tx of design temperature, and that user needs is Ts, instead of Tx, thereby can not meet user's comfort need.
Summary of the invention
Object of the present invention is intended at least one of solve the problems of the technologies described above.
For this reason, one object of the present invention is to propose a kind of control method of electric heater, the method can be adjusted in real time according to the situation of change of current environmental temperature the operate power of electric heater, thereby make the heating of electric heater intelligent constant-temperature, energy-conserving and environment-protective, increase the comfortable experience that user requires constant temperature, and can avoid electric switch do not stop closed and disconnected.Another object of the present invention is to propose a kind of electric heater.
For achieving the above object, first aspect present invention embodiment has proposed a kind of control method of electric heater, comprises the steps:
S1: in the time that electric heater brings into operation, testing environment temperature in real time;
S2: control the first Power operation very first time of described electric heater to preset, until current environmental temperature reaches preset temperature;
S3: obtain the environment temperature climbing speed in the described very first time, and inquire about default power meter to obtain the operate power of described electric heater according to described environment temperature climbing speed, wherein, in described default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power;
S4: control described electric heater and moved for the second time with described operate power, wherein, described the second time is preset value;
S5: the changing value according to described current environmental temperature within described the second time and described default power meter are adjusted the operate power of described electric heater, and repeating step S4 and step S5.
The control method of the electric heater proposing according to the embodiment of the present invention, by real-time testing environment temperature, can adjust in real time according to the situation of change of current environmental temperature the operate power of electric heater, thereby make electric heater intelligent constant-temperature heating, that has avoided electric switch does not stop closed and disconnected, has extended the electrical endurance of switch, reduce noise, and having reduced power consumption, energy-conserving and environment-protective, have increased the comfortable experience of user to constant temperature requirement.
In one embodiment of the invention, described environment temperature climbing speed calculates according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is described environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time;
Described default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of described electric heater calculates by following formula:
Px=L*D*y*Pm
Wherein, the operate power that Px is described electric heater, L is the first parameter preset, and D is described power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is described the first default power.
Wherein, in one embodiment of the invention, in step S3, the corresponding power back-off factor of described operate power is default offset.
Further, in one embodiment of the invention, in step S5, the control method of described electric heater also comprises: if the absolute value of the changing value of described current environmental temperature does not exceed preset temperature threshold value, the described power back-off factor is made as to described default offset, then correspondingly adjusts the grade of described operate power according to the variation of described current environmental temperature.
Further, in one embodiment of the invention, in step S5, the control method of described electric heater also comprises:
Obtain the environment temperature climbing speed in described the second time;
If the absolute value of the changing value of described current environmental temperature exceedes preset temperature threshold value, the described power back-off factor is made as to N/Ka, wherein, N is the second parameter preset, Ka is the environment temperature climbing speed in described the second time, then correspondingly adjusts the grade of described operate power according to the variation of current environmental temperature.
Preferably, in one embodiment of the invention, while adjusting the grade of described operate power, adjust one-level at every turn.
Second aspect present invention embodiment has further proposed a kind of electric heater, comprising: heating module; Detection module, for heat time of in real time testing environment temperature and heating module to generate respectively temperature signal and time signal; Stepless change merit module, for adjusting the operate power of electric heater, wherein, in the time that described electric heater brings into operation, setting described operate power is the first power of presetting, after this, obtain environment temperature climbing speed according to described temperature signal and time signal, and adjust described operate power according to described environment temperature climbing speed and default power meter, wherein, in described default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power; Control module, for heating according to heating module described in described operate power control, wherein, in the time that described electric heater brings into operation, heat time is the very first time, and the described very first time is to bring into operation and reach the time of preset temperature to environment temperature from electric heater, after this, corresponding to the heat time of each operate power be the second time, described the second time is Preset Time.
The electric heater proposing according to the embodiment of the present invention, by real-time testing environment temperature, according to the real-time adjust operation power of the situation of change of current environmental temperature, thereby realize intelligent constant-temperature heating, that has avoided electric switch does not stop closed and disconnected, has extended the electrical endurance of switch, has reduced noise, and reduce power consumption, energy-conserving and environment-protective, have increased the comfortable experience of user to constant temperature requirement, have improved user's experience, meet people's living needs, improve people's quality of life.
In one embodiment of the invention, described stepless change merit module obtains described environment temperature climbing speed according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is described environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time;
Described default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of described electric heater calculates by following formula:
Px=L*D*y*Pm
Wherein, the operate power that Px is described electric heater, L is the first parameter preset, and D is described power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is described the first default power.
Further, in one embodiment of the invention, if the absolute value of the changing value of described current environmental temperature does not exceed preset temperature threshold value within described the second time, the described power back-off factor is made as default offset by described stepless change merit module, and correspondingly adjust the grade of described operate power according to the variation of described current environmental temperature.
Further, in one embodiment of the invention, described stepless change merit module is also for obtaining the environment temperature climbing speed in described the second time; If the absolute value of the changing value of described current environmental temperature exceedes preset temperature threshold value, the described power back-off factor is made as N/Ka by described stepless change merit module, wherein, N is the second parameter preset, Ka is the environment temperature climbing speed in described the second time, and correspondingly adjusts the grade of described operate power according to the variation of described current environmental temperature.
Preferably, in one embodiment of the invention, while adjusting the grade of described operate power, adjust one-level at every turn.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
The present invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments obviously and easily and understand, wherein:
Fig. 1 is the schematic diagram of the heating mode of existing a kind of electric heater;
Fig. 2 is the schematic diagram of the heating mode of existing another kind of electric heater;
Fig. 3 is electric heater power, the environment temperature time dependent schematic diagram corresponding with Fig. 2;
Fig. 4 is according to the flow chart of the control method of the electric heater of the embodiment of the present invention;
Fig. 5 is the flow chart of the control method of the electric heater of a specific embodiment according to the present invention;
Fig. 6 is electric heater operate power of the present invention, the time dependent schematic diagram of environment temperature; And
Fig. 7 is the structural representation of electric heater according to an embodiment of the invention.
Reference numeral:
Electric heater 1000, heating module 100, detection module 200, stepless change merit module 300, control module 400.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts to specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique the invention provides and the example of material, but those of ordinary skill in the art can recognize the use of applicability and/or the other materials of other techniques.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
With reference to description and accompanying drawing below, these and other aspects of embodiments of the invention will be known.In these descriptions and accompanying drawing, specifically disclose some specific implementations in embodiments of the invention, represent some modes of the principle of implementing embodiments of the invention, but should be appreciated that the scope of embodiments of the invention is not limited.On the contrary, embodiments of the invention comprise all changes, amendment and the equivalent within the scope of spirit and the intension that falls into additional claims.
The control method of the electric heater that embodiment proposes to the first aspect of the present invention is with reference to the accompanying drawings described.
As shown in Figure 4, the control method of the electric heater of one embodiment of the present of invention, comprises the steps:
Step S1, in the time that electric heater brings into operation, testing environment temperature in real time.
Step S2, controls the first Power operation very first time T1 of electric heater to preset, until current environmental temperature reaches preset temperature.Wherein, the first default power can be full power for the peak power of electric heater, and very first time T1 is from electric heater and brings into operation and reach the time of preset temperature to environment temperature.
Step S3, obtains the environment temperature climbing speed in the very first time, and rises to check quickly according to environment temperature and ask default power meter to obtain the operate power of electric heater.Wherein, in default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power.
Be understandable that, in order to obtain the environment temperature climbing speed in very first time T1, in step S2 or S3, also comprise the step that measures very first time T1.
Wherein, in an embodiment of the present invention, environment temperature climbing speed calculates according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is described environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time.
Thus, the environment climbing speed Ka=(Ts-T0 in very first time T1)/T1, Ts is preset temperature, T0 is the environment temperature of electric heater while bringing into operation.
In a specific embodiment of the present invention, default power meter is as shown in table 1 below.
Table 1
In an embodiment of the present invention, default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of electric heater calculates by following formula:
Px=L*D*y*Pm
Wherein, the operate power that Px is electric heater, L is the first parameter preset, and D is power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is that the first power of presetting is full power.
Preferably, as shown in table 1, the operate power Px=0.1*D*y*Pm of electric heater, i.e. speech, the first parameter preset L is 0.1.
Particularly, in one embodiment of the invention, in step S3, the corresponding power back-off factor of operate power is default offset, and wherein, default offset can be 1.That is to say, after obtaining the environment temperature climbing speed Ka in the very first time, the power back-off factor be within 1 o'clock, inquire about default power meter table 1 obtain the operate power of electric heater.
Step S4, controls electric heater and moved for the second time with operate power, and wherein, the second time was preset value.
Step S5: the changing value according to current environmental temperature within the second time and default power meter are adjusted the operate power of electric heater, and repeating step S4 and step S5, until receive orders such as stopping heating or shutdown.
Further, in one embodiment of the invention, in step S5, the control method of above-mentioned electric heater also comprises:
Obtain the environment temperature climbing speed in the second time T 2, i.e. Ka=(Tm-Tn)/T2;
If the absolute value of the changing value of current environmental temperature exceedes preset temperature threshold value, the power back-off factor is made as to N/Ka, wherein, N is the second parameter preset, and Ka is the environment temperature climbing speed in the second time, then according to the correspondingly grade of adjust operation power of the variation of current environmental temperature, in the time that environment temperature reduces, heighten the grade of operate power, in the time that environment temperature raises, turn down the grade of operate power.
Further, in one embodiment of the invention, in step S5, the control method of above-mentioned electric heater also comprises: if the absolute value of the changing value of current environmental temperature does not exceed preset temperature threshold value, the power back-off factor is made as to default offset, then according to the correspondingly grade of adjust operation power of the variation of current environmental temperature.Wherein, in a specific embodiment of the present invention, preset temperature threshold value is 0.5K.
Preferably, in one embodiment of the invention, when the grade of adjust operation power, adjust one-level at every turn.
In a specific embodiment of the present invention, as shown in Figure 5, the control method of above-mentioned electric heater is:
Step S10, user preset temperature is Ts.
Step S20, responding to initial environment temperature is T0.
Step S30, records Ts and T0, and opens peak power Pm heating t minute, until Ta=Ts.
Particularly, after execution of step S10 and S20, first Power operation of electric heater to preset
Step S40, calculates temperature rise rate Ka=(Ts-T0)/t.
Step S50, tables look-up 1 according to Ka, determines next step power P x, and now setting power compensating factor y is 1.
Step S60, with Px work a period of time △ t.
Step S70, calculates environment temperature rise rate Ka=(Tm-Tn during this period of time)/△ t.
Step S80, judges environment temperature Ta rises or decline whether exceed 0.5K.Exceed 0.5K if Ta changes, further perform step S90 and step S100; Be no more than 0.5K if Ta changes, perform step S110.
Step S90, if environment temperature Ta rises, lowers 1 grade, y=0.1/Ka by power P x according to table 1.
That is to say, when the changing value of current environmental temperature Ta exceed preset temperature threshold value be 0.5K and for rise time, according to default power meter table 1 control electric heater operate power Px lower 1 grade, wherein, power back-off factor y is N/Ka, and the second parameter preset N is 0.1, i.e. y=0.1/Ka.
Step S100, if environment temperature Ta declines, raises 1 grade, y=0.1/Ka by power P x according to table 1.
That is to say, when the changing value Ta of current environmental temperature exceed preset temperature threshold value be 0.5K and for decline time, according to default power meter table 1 control electric heater operate power Px raise 1 grade, wherein, power back-off factor y is N/Ka, and the second parameter preset N is 0.1, i.e. y=0.1/Ka.
Step S110, judges that environment temperature Ta rises or declines.If environment temperature Ta rises, perform step S120; If environment temperature Ta declines, perform step S130.
Step S120, lowers 1 grade, y=1 by power P x according to table 1.
That is to say, when the changing value of current environmental temperature Ta be no more than preset temperature threshold value be 0.5K and for rise time, according to default power meter table 1 control electric heater operate power Px lower 1 grade, wherein, power back-off factor y is default offset, i.e. y=1.
Step S130, raises 1 grade, y=1 by power P x according to table 1.
That is to say, when the changing value of current environmental temperature Ta be no more than preset temperature threshold value be 0.5K and for decline time, according to default power meter table 1 control electric heater operate power Px raise 1 grade, wherein, power back-off factor y is default offset, i.e. y=1.
It should be noted that, after power P x is raised or lowered, return to step S60, with this Px work a period of time △ t, so circulation.
Fig. 6 is the time dependent schematic diagram of operate power, environment temperature of electric heater of the present invention.As shown in Figure 6, from 0 to 1 times of Pm of the operate power of electric heater is that full power is for example for 2000W does stepless variation, when environment temperature approaches user preset temperature T s, the operate power of electric heater will adjust along with environment temperature climbing speed Ka, the operate power of the larger electric heater of Ka is lower, the operate power of the less electric heater of Ka is higher, thereby realizes the stable of temperature, and it is zero that temperature rise changes infinite approach.
The present invention is by the curvature of accounting temperature rise and fall, power stepless is changed and adjusted, progressively find the equalization point of heating power and thermal losses, be that variation of ambient temperature is very little, make environment temperature and preset temperature be fused into gradually straight line, dwindled gradually the Delta Region of preset temperature line and environment temperature line.Thus, allow environment temperature in the very little scope of user preset temperature T s, work all the time, realize intelligent constant-temperature, and reduce the area of Delta Region, preset temperature line top, thereby eliminate the energy dissipation that thermal inertia is brought, to reduce power consumption, reached energy-conservation object.
In addition, the switching device in technical solution of the present invention is duty always, allows heater be operated in less power bracket, and that avoids electric switch does not stop closed and disconnected, extends the electrical endurance of switch.
The control method of the electric heater proposing according to the embodiment of the present invention, by real-time testing environment temperature, can adjust in real time according to the situation of change of current environmental temperature the operate power of electric heater, thereby make electric heater intelligent constant-temperature heating, that has avoided electric switch does not stop closed and disconnected, has extended the electrical endurance of switch, reduce noise, and having reduced power consumption, energy-conserving and environment-protective, have increased the comfortable experience of user to constant temperature requirement.
Electric heater second aspect present invention embodiment being proposed below with reference to Fig. 7 is described.
Fig. 7 shows the structural representation of the electric heater of one embodiment of the invention.As shown in Figure 7, the electric heater 1000 that one embodiment of the invention proposes comprises: heating module 100, detection module 200, stepless change merit module 300 and control module 400.
Detection module 200 for heat time of in real time testing environment temperature and heating module 100 to generate respectively temperature signal and time signal.Therefore, in a concrete example of the present invention, detection module 200 comprises temperature sensor, timing circuit etc., wherein, the real-time testing environment temperature of temperature sensor, timing circuit detects the heat time of heating module 100 in real time.
Stepless change merit module 300, for adjusting the operate power of electric heater 1000, wherein, in the time that electric heater 1000 brings into operation, setting operate power is the first power of presetting, after this, obtain environment temperature climbing speed according to temperature signal and time signal, and according to environment temperature climbing speed and default power meter adjust operation power, wherein, in default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power.
Control module 400, for heating according to operate power control heating module 100, wherein, in the time that electric heater 1000 brings into operation, heat time is very first time T1, and very first time T1 brings into operation and reaches the time of preset temperature to environment temperature from electric heater 1000, after this, be that the second time T 2, the second time T 2 are Preset Time corresponding to the heat time of each operate power.
In one embodiment of the invention, stepless change merit module 300 obtains environment temperature climbing speed according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time.
That is to say the environment temperature climbing speed Ka=(Ts-T0 in very first time T1)/T1, wherein, Ka is environment temperature climbing speed, and Ts is preset temperature, and T0 is the environment temperature of electric heater 1000 while bringing into operation.
In one embodiment of the invention, default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of electric heater 1000 calculates by following formula:
Px=L*D*y*Pm
Wherein, Px is the operate power of electric heater 1000, and L is the first parameter preset, and D is power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is the first power of presetting.
Preferably, in a specific embodiment of the present invention, the first parameter preset is 0.1, i.e. speech, Px=0.1*D*y*Pm.
In an embodiment of the present invention, after heating module 100 is with the first power heating very first time T1 presetting, be that environment temperature reaches after preset temperature, now, stepless change merit module 300 obtains the environment temperature climbing speed in very first time T1, and according to environment temperature climbing speed and default power meter to obtain the operate power of electric heater 1000, now, the corresponding power back-off factor of operate power of electric heater 1000 is default offset, and wherein, default offset can be 1.
Further, if the absolute value at the changing value of the second time T 2 interior current environmental temperature does not exceed preset temperature threshold value, the power back-off factor is made as default offset by stepless change merit module 300, i.e. y=1, and according to the correspondingly grade of adjust operation power of the variation of current environmental temperature.
In the present embodiment, stepless change merit module 300 is also for obtaining the environment temperature climbing speed in the second time T 2; If the absolute value of the changing value of current environmental temperature exceedes preset temperature threshold value, the power back-off factor is made as N/Ka by stepless change merit module 300, wherein, N is the second parameter preset, Ka is the environment temperature climbing speed in the second time, and according to the correspondingly grade of adjust operation power of the variation of current environmental temperature.
That is to say, in the time that environment temperature reduces, stepless change merit module 300 is heightened the grade of operate power, and in the time that environment temperature raises, stepless change merit module 300 is turned down the grade of operate power.
Preferably, in a specific embodiment of the present invention, the second parameter preset N is 0.1, that is to say, if the absolute value of the changing value of current environmental temperature exceedes preset temperature threshold value, the power back-off factor is made as to 0.1/Ka.
Preferably, in one embodiment of the invention, when the grade of adjust operation power, adjust one-level at every turn.
In a specific embodiment of the present invention, the control principle of above-mentioned electric heater 1000 is:
In the time that electric heater 1000 is started working, the real-time testing environment temperature of detection module 200, responding to initial environment temperature is T0.Electric heater 1000 is that full power Pm controls heating module 100 to move very first time T1 be for example t minute according to the first default power, until current environmental temperature Ta reaches preset temperature Ts, be Ta=Ts, according to Ka=(Ts-T0)/t acquisition environment temperature climbing speed Ka, and the default power meter of inquiry, in the time that power back-off factor y is default offset, be y=1, obtain operate power, now the operate power of electric heater 1000 is Px, heating module 100 is with Px operation a period of time △ t, stepless change merit module 300 is calculated at the environment temperature climbing speed Ka of △ t during this period of time, judge that whether current environmental temperature Ta rising or decline exceed preset temperature threshold value is for example 0.5K.
In the time that the changing value of current environmental temperature Ta exceedes 0.5K and is rising, the operate power of electric heater 1000 is lowered 1 grade by stepless change merit module 300; In the time that the changing value of current environmental temperature Ta exceedes 0.5K and is decline, the operate power of electric heater 1000 is raised 1 grade by stepless change merit module 300, and wherein, power back-off factor y is 0.1/Ka.
In the time that the changing value of current environmental temperature Ta is no more than 0.5K and is rising, the operate power of electric heater 1000 is lowered 1 grade by stepless change merit module 300; In the time that the changing value of current environmental temperature Ta is no more than 0.5K and is decline, the operate power of electric heater 1000 is raised 1 grade by stepless change merit module 300, and wherein, power back-off factor y is 1.
Control module 400 heats according to the operate power control heating module 100 after adjusting.Be that heating module 100 moves with the operate power Px after adjusting, and working after a period of time △ t with this Px, again judge that whether environment temperature Ta rising or decline exceed preset temperature threshold value is 0.5K, so circulation.
The electric heater proposing according to the embodiment of the present invention, by real-time testing environment temperature, according to the real-time adjust operation power of the situation of change of current environmental temperature, thereby realize intelligent constant-temperature heating, that has avoided electric switch does not stop closed and disconnected, has extended the electrical endurance of switch, has reduced noise, and reduce power consumption, energy-conserving and environment-protective, have increased the comfortable experience of user to constant temperature requirement, have improved user's experience, meet people's living needs, improve people's quality of life.
Any process of otherwise describing in flow chart or at this or method are described and can be understood to, represent to comprise that one or more is for realizing module, fragment or the part of code of executable instruction of step of specific logical function or process, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by contrary order, carry out function, this should be understood by embodiments of the invention person of ordinary skill in the field.
The logic and/or the step that in flow chart, represent or otherwise describe at this, for example, can be considered to the sequencing list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (as computer based system, comprise that the system of processor or other can and carry out the system of instruction from instruction execution system, device or equipment instruction fetch), or use in conjunction with these instruction execution systems, device or equipment.With regard to this description, " computer-readable medium " can be anyly can comprise, device that storage, communication, propagation or transmission procedure use for instruction execution system, device or equipment or in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wirings, portable computer diskette box (magnetic device), random-access memory (ram), read-only storage (ROM), the erasable read-only storage (EPROM or flash memory) of editing, fiber device, and portable optic disk read-only storage (CDROM).In addition, computer-readable medium can be even paper or other the suitable medium that can print described program thereon, because can be for example by paper or other media be carried out to optical scanner, then edit, decipher or process in electronics mode and obtain described program with other suitable methods if desired, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with being stored in software or the firmware carried out in memory and by suitable instruction execution system.For example, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic for data-signal being realized to the logic gates of logic function, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in a kind of computer-readable recording medium, this program, in the time carrying out, comprises step of embodiment of the method one or a combination set of.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The above-mentioned storage medium of mentioning can be read-only storage, disk or CD etc.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (11)
1. a control method for electric heater, is characterized in that, comprises the following steps:
S1: in the time that electric heater brings into operation, testing environment temperature in real time;
S2: control the first Power operation very first time of described electric heater to preset, until current environmental temperature reaches preset temperature;
S3: obtain the environment temperature climbing speed in the described very first time, and inquire about default power meter to obtain the operate power of described electric heater according to described environment temperature climbing speed, wherein, in described default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power;
S4: control described electric heater and moved for the second time with described operate power, wherein, described the second time is preset value;
S5: the changing value according to described current environmental temperature within described the second time and described default power meter are adjusted the operate power of described electric heater, and repeating step S4 and step S5.
2. the control method of electric heater as claimed in claim 1, is characterized in that, described environment temperature climbing speed calculates according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is described environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time;
Described default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of described electric heater calculates by following formula:
Px=L*D*y*Pm
Wherein, the operate power that Px is described electric heater, L is the first parameter preset, and D is described power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is described the first default power.
3. the control method of electric heater as claimed in claim 2, is characterized in that, in step S3, the corresponding power back-off factor of described operate power is default offset.
4. the control method of electric heater as claimed in claim 2, is characterized in that, in step S5, also comprises:
If the absolute value of the changing value of described current environmental temperature does not exceed preset temperature threshold value, the described power back-off factor is made as to described default offset, then correspondingly adjust the grade of described operate power according to the variation of described current environmental temperature.
5. the control method of electric heater as claimed in claim 2, is characterized in that, in step S5, also comprises:
Obtain the environment temperature climbing speed in described the second time;
If the absolute value of the changing value of described current environmental temperature exceedes preset temperature threshold value, the described power back-off factor is made as to N/Ka, wherein, N is the second parameter preset, Ka is the environment temperature climbing speed in described the second time, then correspondingly adjusts the grade of described operate power according to the variation of current environmental temperature.
6. the control method of the electric heater as described in claim 4 or 5, is characterized in that, while adjusting the grade of described operate power, adjusts one-level at every turn.
7. an electric heater, is characterized in that, comprising:
Heating module;
Detection module, for heat time of in real time testing environment temperature and heating module to generate respectively temperature signal and time signal;
Stepless change merit module, for adjusting the operate power of electric heater, wherein, in the time that described electric heater brings into operation, setting described operate power is the first power of presetting, after this, obtain environment temperature climbing speed according to described temperature signal and time signal, and adjust described operate power according to described environment temperature climbing speed and default power meter, wherein, in described default power meter, each environment temperature climbing speed is corresponding with an electric heater operate power;
Control module, for heating according to heating module described in described operate power control, wherein, in the time that described electric heater brings into operation, heat time is the very first time, and the described very first time is to bring into operation and reach the time of preset temperature to environment temperature from electric heater, after this, corresponding to the heat time of each operate power be the second time, described the second time is Preset Time.
8. electric heater as claimed in claim 7, is characterized in that, described stepless change merit module obtains described environment temperature climbing speed according to following formula:
Ka=（Tm-Tn）/△t
Wherein, Ka is described environment temperature climbing speed, and △ t is section running time, and Tn is △ t initial temperature during this period of time, and Tm is △ t end temp during this period of time;
Described default power meter is environment temperature climbing speed interval-electric heater operate power-power grade corresponding table one by one, and the operate power of described electric heater calculates by following formula:
Px=L*D*y*Pm
Wherein, the operate power that Px is described electric heater, L is the first parameter preset, and D is described power grade and for to be more than or equal to 0 integer, y is the power back-off factor, and Pm is described the first default power.
9. electric heater as claimed in claim 8, is characterized in that,
If the absolute value of the changing value of described current environmental temperature does not exceed preset temperature threshold value within described the second time, the described power back-off factor is made as default offset by described stepless change merit module, and correspondingly adjust the grade of described operate power according to the variation of described current environmental temperature.
10. electric heater as claimed in claim 8, is characterized in that,
Described stepless change merit module is also for obtaining the environment temperature climbing speed in described the second time;
If the absolute value of the changing value of described current environmental temperature exceedes preset temperature threshold value, the described power back-off factor is made as N/Ka by described stepless change merit module, wherein, N is the second parameter preset, Ka is the environment temperature climbing speed in described the second time, and correspondingly adjusts the grade of described operate power according to the variation of described current environmental temperature.
11. electric heaters as described in claim 9 or 10, is characterized in that, while adjusting the grade of described operate power, adjust one-level at every turn.
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