CN105163406A - Control method and system of electric heater - Google Patents
Control method and system of electric heater Download PDFInfo
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- CN105163406A CN105163406A CN201510660471.XA CN201510660471A CN105163406A CN 105163406 A CN105163406 A CN 105163406A CN 201510660471 A CN201510660471 A CN 201510660471A CN 105163406 A CN105163406 A CN 105163406A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005485 electric heating Methods 0.000 claims abstract description 291
- 238000010438 heat treatment Methods 0.000 description 4
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Abstract
The invention discloses a control method of an electric heater, which comprises the following steps: the controller generates a first control instruction and sequentially controls each group of electric heating parts according to the first control instruction, so that the temperature of each group of electric heating parts reaches a preset stable value; the controller generates a second control instruction and controls the temperature of each group of electric heating parts to be kept at a preset stable value according to the second control instruction; the controller generates a third control instruction and simultaneously turns on each group of electric heating parts according to the third control instruction. The invention can maintain the temperature of each electric heating part at a stable value before all the electric heating parts are simultaneously started, so that the starting current can be greatly reduced when all the electric heating parts are simultaneously started, and the damage to a power grid caused by impact according to a control device is reduced. The invention also discloses a control system of the electric heater.
Description
Technical field
The present invention relates to electric heater technical field, particularly relate to a kind of control method and system of electric heater.
Background technology
At present, when carrying out startup to electric heater and controlling, normally start all electric heating elements in electric heater simultaneously, the electric current of electric heater when starting therefore being made very large, easily causing the impact to electrical network and the damage to control device.
Summary of the invention
The invention provides a kind of control method of electric heater, before all electric heating elements can being opened at the same time, the temperature of each electric heating element is made to maintain stationary value, when making to open all electric heating elements at the same time, significantly can reduce starting current, reduce the damage of the impact foundation control device to electrical network.
The invention provides a kind of control method of electric heater, comprising:
Controller generates the first control command, and controls successively often to organize electric heating element according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value;
Controller generates the second control command, and remains on described pre-determined stability value according to the temperature that electric heating element is often organized in described second control command control;
Controller generates the 3rd control command, and opens according to described 3rd control command simultaneously and often organize electric heating element.
Preferably, described controller generates the first control command, and controls electric heating element successively according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value and comprises:
Controller generates the first control command, closes the control switch of first group of electric heating element according to described first control command, makes the temperature of the electric heater in first group of electric heating element reach pre-determined stability value;
When the temperature of the electric heater in described first group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described first group of electric heating element according to described first control command, the control switch of closed second group of electric heating element, makes the temperature of the electric heater in second group of electric heating element reach pre-determined stability value simultaneously;
When the temperature of the electric heater in described second group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described second group of electric heating element according to described first control command, the control switch of next group electric heating element closed simultaneously, repeat above process, until the temperature of last electric heater organized in electric heating element reaches pre-determined stability value.
Preferably, described controller generates the second control command, and remains on described pre-determined stability value according to the temperature that described second control command controls often to organize electric heating element and comprise:
Controller judges that whether the temperature often organizing the electric heater in electric heating element is lower than pre-determined stability value;
When judging the temperature of the electric heater in electric heating element lower than pre-determined stability value, generate the second control command, and control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value.
Preferably, describedly control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value and comprise:
Controller closes the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, makes first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described second group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
A control system for electric heater, comprising: controller and N group electric heating element; Wherein, N >=2;
Described controller generates the first control command, and controls coupled often group electric heating element successively according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value;
Controller generates the second control command, and remains on described pre-determined stability value according to the coupled temperature often organizing electric heating element of described second control command control;
Controller generates the 3rd control command, and opens coupled often group electric heating element according to described 3rd control command simultaneously.
Preferably, the electric heating element in described often group includes: control switch and electric heater; Wherein:
Described control switch is connected with described electric heater;
Described controller closes the control switch of first group of electric heating element according to described first control command, makes the temperature of the electric heater in first group of electric heating element reach pre-determined stability value;
When the temperature of the electric heater in described first group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described first group of electric heating element according to described first control command, the control switch of closed second group of electric heating element, makes the temperature of the electric heater in second group of electric heating element reach pre-determined stability value simultaneously;
When the temperature of the electric heater in described second group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described second group of electric heating element according to described first control command, the control switch of next group electric heating element closed simultaneously, repeat above process, until the temperature of last electric heater organized in electric heating element reaches pre-determined stability value.
Preferably, described controller judges that whether the temperature often organizing the electric heater in electric heating element is lower than pre-determined stability value;
When judging the temperature of the electric heater in electric heating element lower than pre-determined stability value, generate the second control command, and control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value.
Preferably, described controller closes the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, makes first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described second group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
Preferably, described control switch is relay.
From such scheme, the control method of a kind of electric heater provided by the invention, first generate the first control command by controller, control successively often to organize electric heating element according to the first control command, make the temperature often organizing electric heating element all reach pre-determined stability value; Secondly generate the second control command by controller, the temperature controlling often to organize electric heating element according to the second control command remains on described pre-determined stability value; Generate the 3rd control command finally by controller, open according to the 3rd control command simultaneously and often organize electric heating element.Before all electric heating elements can being opened at the same time, the temperature of each electric heating element is made to maintain stationary value, when making to open all electric heating elements at the same time, significantly can reduce starting current, reduce the damage of the impact foundation control device to electrical network.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of Fig. 1 a kind of control method of electric heater disclosed in the embodiment of the present invention;
Fig. 2 is a kind of flow chart making the temperature often organizing electric heating element all reach the control method of pre-determined stability value disclosed in the embodiment of the present invention;
Fig. 3 is a kind of flow chart making the temperature often organizing electric heating element remain on the control method of pre-determined stability value disclosed in the embodiment of the present invention;
The structural representation of Fig. 4 a kind of control system of electric heater disclosed in the embodiment of the present invention;
The structural representation of Fig. 5 control system of another kind of electric heater disclosed in the embodiment of the present invention;
The structural representation of Fig. 6 control system of another kind of electric heater disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of control method of electric heater disclosed in the embodiment of the present invention, comprising:
S101, controller generate the first control command, and control successively often to organize electric heating element according to described first control command, make the temperature often organizing electric heating element all reach pre-determined stability value;
When needs control electric heater, first the first control command is generated by controller, described first control command is used for controlling often organizing electric heating element, open often organizing electric heating element successively, make electric heating element open a period of time, temperature all reaches corresponding pre-determined stability value.
S102, controller generate the second control command, and remain on described pre-determined stability value according to the temperature that electric heating element is often organized in described second control command control;
After the temperature controlling often to organize electric heating element successively when controller all reaches corresponding pre-determined stability value, continue generation second control command, described second control command remains on corresponding pre-determined stability value for the temperature controlling often to organize electric heating element.Because controller has sequencing when the temperature controlling often to organize electric heating element by the first control command reaches corresponding pre-determined stability value, therefore, when the temperature controlling last group electric heating element reaches corresponding pre-determined stability value, may occur that the temperature of some group electric heating element is above lower than corresponding pre-determined stability value, therefore, need the second control command generated by controller to control the electric heating element of temperature lower than pre-determined stability value, make the temperature of all electric heating elements all remain on corresponding pre-determined stability value.
S103, controller generate the 3rd control command, and open according to described 3rd control command simultaneously and often organize electric heating element.
When controller according to generate the second control command control all electric heating elements all remain on corresponding pre-determined stability value time, controller generates the 3rd control command, described 3rd control command is used for opening simultaneously often organizes electric heating element, thus completes the startup of electric heater.
In sum, in the above-described embodiments, first generate the first control command by controller, control successively often to organize electric heating element according to the first control command, make the temperature often organizing electric heating element all reach pre-determined stability value; Secondly generate the second control command by controller, the temperature controlling often to organize electric heating element according to the second control command remains on described pre-determined stability value; Generate the 3rd control command finally by controller, open according to the 3rd control command simultaneously and often organize electric heating element.Before all electric heating elements can being opened at the same time, the temperature of each electric heating element is made to maintain stationary value, when making to open all electric heating elements at the same time, significantly can reduce starting current, reduce the damage of the impact foundation control device to electrical network.
As shown in Figure 2, for step 101 in the above embodiment of the present invention makes the temperature often organizing electric heating element all reach wherein a kind of implementation of pre-determined stability value, specifically comprise the following steps:
S201, controller generate the first control command, close the control switch of first group of electric heating element according to described first control command, make the temperature of the electric heater in first group of electric heating element reach pre-determined stability value;
When needing to make the temperature often organizing electric heating element all reach pre-determined stability value, the first control command is generated by controller, the control switch of first group of electric heating element in the first control command closed electrical heater system generated by controller, the electric heater in first group of electric heating element is made to be in conducting state, control the electric heater conducting a period of time in first group of electric heating element, make the temperature of the electric heater in first group of electric heating element reach corresponding pre-determined stability value.
When the temperature of the electric heater in first group of electric heating element reaches pre-determined stability value, enter S202:
S202, controller disconnect the control switch of described first group of electric heating element according to described first control command, and the control switch of closed second group of electric heating element, makes the temperature of the electric heater in second group of electric heating element reach pre-determined stability value simultaneously;
When the temperature of the electric heater that controller controls in first group of electric heating element reaches default stationary value, the control switch of first group of electric heating element is disconnected by the first control command, the electric heater in first group of electric heating element is made to stop heating, simultaneously by the first control command close second group of electric heating element control close open, the electric heater in second group of electric heating element is made to be in conducting state, control the electric heater conducting a period of time in second group of electric heating element, the temperature of the electric heater in second group of electric heating element is made to reach corresponding pre-determined stability value.
When the temperature of the electric heater in described second group of electric heating element reaches pre-determined stability value, enter S203:
S203, controller disconnect the control switch of described second group of electric heating element according to described first control command, the control switch of next group electric heating element closed simultaneously, repeat above process, until the temperature of last electric heater organized in electric heating element reaches pre-determined stability value.
When the temperature of the electric heater that controller controls in second group of electric heating element reaches default stationary value, the control switch of second group of electric heating element is disconnected by the first control command, the electric heater in second group of electric heating element is made to stop heating, close next control pass organizing electric heating element by the first control command to open simultaneously, the electric heater in next group electric heating element is made to be in conducting state, control the electric heater conducting a period of time in next group electric heating element, the temperature of the electric heater in next group electric heating element is made to reach corresponding pre-determined stability value, repeat said process successively, until the temperature controlling the electric heater in last group electric heating element reaches pre-determined stability value.
As shown in Figure 3, for step 102 in the above embodiment of the present invention makes the temperature often organizing electric heating element remain on wherein a kind of implementation of pre-determined stability value, specifically comprise the following steps:
S301, controller judge that whether the temperature often organizing the electric heater in electric heating element is lower than pre-determined stability value;
The temperature of controller to the electric heater often organized in electric heating element judges, judges that whether the temperature of the electric heater in electric heating element is lower than corresponding pre-determined stability value.
When judging the temperature of the electric heater in electric heating element lower than pre-determined stability value, enter S302:
S302, controller generate the second control command, close the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, make first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When controller judges the temperature of the electric heater had in electric heating element lower than pre-determined stability value, generate the second control command, first group of electric heater temperature in the first control command closed electrical heater system generated by controller is lower than the control switch of the electric heating element of pre-determined stability value, first group of electric heater temperature is made to be in conducting state lower than the electric heater in the electric heating element of pre-determined stability value, control first group of electric heater temperature lower than the electric heater conducting a period of time in the electric heating element of pre-determined stability value, first group of electric heater temperature is made to reach corresponding pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
When described first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, enter S303:
S303, controller disconnect the control switch of described first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When controller control first group of electric heater temperature reach default stationary value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value time, the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value is disconnected by the first control command, first group of electric heater temperature is made to stop heating lower than the electric heater in the electric heating element of pre-determined stability value, close second group of electric heater temperature by the first control command to open lower than the control pass of the electric heating element of pre-determined stability value simultaneously, second group of electric heater temperature is made to be in conducting state lower than the electric heater in the electric heating element of pre-determined stability value, control second group of electric heater temperature lower than the electric heater conducting a period of time in the electric heating element of pre-determined stability value, second group of electric heater temperature is made to reach corresponding pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
When described second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, enter S304:
S304, controller disconnect the control switch of described second group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
When controller control second group of electric heater temperature reach default stationary value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value time, the control switch of second group of electric heater temperature lower than the electric heating element of pre-determined stability value is disconnected by the first control command, second group of electric heater temperature is made to stop heating lower than the electric heater in the electric heating element of pre-determined stability value, close next group electric heater temperature by the first control command to open lower than the control pass of the electric heating element of pre-determined stability value simultaneously, next group electric heater temperature is made to be in conducting state lower than the electric heater in the electric heating element of pre-determined stability value, control next group electric heater temperature lower than the electric heater conducting a period of time in the electric heating element of pre-determined stability value, next group electric heater temperature is made to reach corresponding pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, repeat said process successively, until control last group electric heater temperature to reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
As shown in Figure 4, be the control system of a kind of electric heater disclosed by the invention, comprise: controller 41 and N group electric heating element 42; Wherein, N >=2;
Controller 41 generates the first control command, and controls coupled often group electric heating element 42 successively according to described first control command, makes the temperature often organizing electric heating element 42 all reach pre-determined stability value;
Controller 41 generates the second control command, and remains on described pre-determined stability value according to the temperature often organizing electric heating element 42 that described second control command control is coupled;
Controller 41 generates the 3rd control command, and opens coupled often group electric heating element 42 according to described 3rd control command simultaneously.
The operation principle of said system is: when needs control electric heater, first the first control command is generated by controller 41, described first control command is used for controlling often organizing electric heating element 42, open often organizing electric heating element 42 successively, make electric heating element 42 open a period of time, temperature all reaches corresponding pre-determined stability value.
After the temperature controlling often to organize electric heating element 42 successively when controller 41 all reaches corresponding pre-determined stability value, continue generation second control command, described second control command remains on corresponding pre-determined stability value for the temperature controlling often to organize electric heating element 42.Because controller 41 has sequencing when the temperature controlling often to organize electric heating element 42 by the first control command reaches corresponding pre-determined stability value, therefore, when the temperature controlling last group electric heating element 42 reaches corresponding pre-determined stability value, may occur that the temperature of some group electric heating element 42 is above lower than corresponding pre-determined stability value, therefore, the second control command generated by controller 41 is needed to control the electric heating element 42 of temperature lower than pre-determined stability value, the temperature of all electric heating elements 42 is made all to remain on corresponding pre-determined stability value.
When controller 41 according to generate the second control command control all electric heating elements 42 all remain on corresponding pre-determined stability value time, controller 41 generates the 3rd control command, described 3rd control command is used for opening simultaneously often organizes electric heating element 42, thus completes the startup of electric heater.
In sum, in the above-described embodiments, first generate the first control command by controller, control successively often to organize electric heating element according to the first control command, make the temperature often organizing electric heating element all reach pre-determined stability value; Secondly generate the second control command by controller, the temperature controlling often to organize electric heating element according to the second control command remains on described pre-determined stability value; Generate the 3rd control command finally by controller, open according to the 3rd control command simultaneously and often organize electric heating element.Before all electric heating elements can being opened at the same time, the temperature of each electric heating element is made to maintain stationary value, when making to open all electric heating elements at the same time, significantly can reduce starting current, reduce the damage of the impact foundation control device to electrical network.
As shown in Figure 5, be the control system of another kind of electric heater disclosed by the invention, comprise: controller 51, N group electric heating element 52; Wherein, N >=2; Wherein often organize electric heating element 52 and all comprise control switch 521 and electric heater 522; Wherein:
Control switch 521 is connected with described electric heater 522;
Controller 51 generates the first control command, closes the control switch 521 of first group of electric heating element 52 according to described first control command, makes the temperature of the electric heater 522 in first group of electric heating element 52 reach pre-determined stability value;
When the temperature of the electric heater 522 in first group of electric heating element 51 reaches pre-determined stability value, controller 51 disconnects the control switch 521 of described first group of electric heating element 52 according to described first control command, the control switch 521 of closed second group of electric heating element 52, makes the temperature of the electric heater 522 in second group of electric heating element 52 reach pre-determined stability value simultaneously;
When the temperature of the electric heater 522 in described second group of electric heating element 52 reaches pre-determined stability value, controller 51 disconnects the control switch 521 of described second group of electric heating element 52 according to described first control command, the control switch 521 of next group electric heating element 52 closed simultaneously, repeat above process, until the temperature of last electric heater 522 organized in electric heating element 52 reaches pre-determined stability value;
Controller 51 judges that whether the temperature of the electric heater 522 often organized in electric heating element 52 is lower than pre-determined stability value;
When the temperature of the electric heater 522 judged in electric heating element 52 is lower than pre-determined stability value, controller 51 closes the control switch 521 of first group of electric heater temperature lower than the electric heating element 52 of pre-determined stability value according to described second control command, makes first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater 522 in the electric heating element 52 of pre-determined stability value;
When first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater 522 in the electric heating element 52 of pre-determined stability value, controller 51 disconnects the control switch 521 of first group of electric heater temperature lower than the electric heating element 52 of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch 521 of the electric heating element 52 of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater 522 in the electric heating element 52 of pre-determined stability value;
When second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater 522 in the electric heating element 52 of pre-determined stability value, controller 51 disconnects the control switch 521 of described second group of electric heater temperature lower than the electric heating element 52 of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch 521 of the electric heating element 52 of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater 522 in the electric heating element 52 of pre-determined stability value,
Controller 51 generates the 3rd control command, and opens coupled often group electric heating element 52 according to described 3rd control command simultaneously.
Concrete, the control switch in above-described embodiment can be relay.
As shown in Figure 6, a kind of control system of electric heater disclosed in the embodiment of the present invention, comprising: controller 61, three groups of electric heating elements; Wherein:
First group of electric heating element comprises the first relay K 1, second relay K 2 and the first electric heater HEAT1;
Second group of electric heating element comprises the 3rd relay K 3, the 4th relay K 4 and the second electric heater HEAT1;
3rd group of electric heating element comprises the 5th relay K 5, the 6th relay K 6 and the 3rd electric heater HEAT3.
In the control procedure of electric heater, first by controller 61 the first relay K 1 in first group of electric heating element and the second relay K 2 inhaled and, the first electric heater HEAT1 is made to be in unlatching, after certain time interval T 1, the temperature of the first electric heater HEAT1 reaches a stationary value, electric current is also relatively stable, the first relay K 1 and the second relay K 2 is disconnected by controller 61, then by the 3rd relay K 3 in controller 61 control suction and second group of electric heating element and the 4th relay K 4, second electric heater HEAT2 is opened, after time certain T2, the temperature of the second electric heater HEAT2 reaches a stationary value, electric current is also relatively stable, the 3rd relay K 3 and the 4th relay K 4 is disconnected by controller 61, then by the 5th relay K 5 in controller 61 control suction and the 3rd group of electric heating element and the 6th relay K 6, 3rd electric heater HEAT3 is opened, after time certain T3, the temperature of the 3rd electric heater HEAT3 reaches a stationary value, electric current is also relatively stable, the 5th relay K 5 and the 6th relay K 6 is disconnected by controller 61.
For keeping the thermal resistance value of the first electric heater HEAT1, the second electric heater HEAT2 and the 3rd electric heater HEAT3, before starting three electric heaters at the same time, the first electric heater HEAT1, the second electric heater HEAT2 and the 3rd electric heater HEAT3 is again controlled respectively by controller 61, make the temperature of the first electric heater HEAT1, the second electric heater HEAT2 and the 3rd electric heater HEAT3 all reach stable state, finally start three electric heaters by controller 61 more simultaneously.
If the function described in the present embodiment method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present invention contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a control method for electric heater, is characterized in that, comprising:
Controller generates the first control command, and controls successively often to organize electric heating element according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value;
Controller generates the second control command, and remains on described pre-determined stability value according to the temperature that electric heating element is often organized in described second control command control;
Controller generates the 3rd control command, and opens according to described 3rd control command simultaneously and often organize electric heating element.
2. method according to claim 1, is characterized in that, described controller generates the first control command, and controls electric heating element successively according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value and comprises:
Controller generates the first control command, closes the control switch of first group of electric heating element according to described first control command, makes the temperature of the electric heater in first group of electric heating element reach pre-determined stability value;
When the temperature of the electric heater in described first group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described first group of electric heating element according to described first control command, the control switch of closed second group of electric heating element, makes the temperature of the electric heater in second group of electric heating element reach pre-determined stability value simultaneously;
When the temperature of the electric heater in described second group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described second group of electric heating element according to described first control command, the control switch of next group electric heating element closed simultaneously, repeat above process, until the temperature of last electric heater organized in electric heating element reaches pre-determined stability value.
3. method according to claim 2, is characterized in that, described controller generates the second control command, and remains on described pre-determined stability value according to the temperature that described second control command controls often to organize electric heating element and comprise:
Controller judges that whether the temperature often organizing the electric heater in electric heating element is lower than pre-determined stability value;
When judging the temperature of the electric heater in electric heating element lower than pre-determined stability value, generate the second control command, and control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value.
4. method according to claim 3, it is characterized in that, describedly control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value and comprise:
Controller closes the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, makes first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described second group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
5. a control system for electric heater, is characterized in that, comprising: controller and N group electric heating element; Wherein, N >=2;
Described controller generates the first control command, and controls coupled often group electric heating element successively according to described first control command, makes the temperature often organizing electric heating element all reach pre-determined stability value;
Controller generates the second control command, and remains on described pre-determined stability value according to the coupled temperature often organizing electric heating element of described second control command control;
Controller generates the 3rd control command, and opens coupled often group electric heating element according to described 3rd control command simultaneously.
6. system according to claim 5, is characterized in that, the electric heating element in described often group includes: control switch and electric heater; Wherein:
Described control switch is connected with described electric heater;
Described controller closes the control switch of first group of electric heating element according to described first control command, makes the temperature of the electric heater in first group of electric heating element reach pre-determined stability value;
When the temperature of the electric heater in described first group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described first group of electric heating element according to described first control command, the control switch of closed second group of electric heating element, makes the temperature of the electric heater in second group of electric heating element reach pre-determined stability value simultaneously;
When the temperature of the electric heater in described second group of electric heating element reaches pre-determined stability value, controller disconnects the control switch of described second group of electric heating element according to described first control command, the control switch of next group electric heating element closed simultaneously, repeat above process, until the temperature of last electric heater organized in electric heating element reaches pre-determined stability value.
7. system according to claim 6, is characterized in that, described controller judges that whether the temperature often organizing the electric heater in electric heating element is lower than pre-determined stability value;
When judging the temperature of the electric heater in electric heating element lower than pre-determined stability value, generate the second control command, and control successively often to organize the electric heating element of electric heater temperature lower than pre-determined stability value according to described second control command, make the temperature of the electric heater in electric heating element remain on described pre-determined stability value.
8. system according to claim 7, it is characterized in that, described controller closes the control switch of first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, makes first group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described first group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described first group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, closed second group of electric heater temperature is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, makes second group of electric heater temperature reach pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value;
When described second group of electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value, controller disconnects the control switch of described second group of electric heater temperature lower than the electric heating element of pre-determined stability value according to described second control command, next group electric heater temperature closed is lower than the control switch of the electric heating element of pre-determined stability value simultaneously, repeat above process, until last group electric heater temperature reaches pre-determined stability value lower than the temperature of the electric heater in the electric heating element of pre-determined stability value.
9. system according to claim 8, is characterized in that, described control switch is relay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510660471.XA CN105163406A (en) | 2015-10-12 | 2015-10-12 | Control method and system of electric heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510660471.XA CN105163406A (en) | 2015-10-12 | 2015-10-12 | Control method and system of electric heater |
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| CN101001490A (en) * | 2007-01-04 | 2007-07-18 | 中兴通讯股份有限公司 | Heating device |
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| WO2014040988A2 (en) * | 2012-09-11 | 2014-03-20 | Philip Morris Products S.A. | Device and method for controlling an electrical heater to limit temperature |
| CN203651498U (en) * | 2013-12-13 | 2014-06-18 | 北汽福田汽车股份有限公司 | Heater device started in a staged mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101001490A (en) * | 2007-01-04 | 2007-07-18 | 中兴通讯股份有限公司 | Heating device |
| CN102428421A (en) * | 2009-05-15 | 2012-04-25 | 电光株式会社 | Uninterruptible variable voltage device |
| CN103024951A (en) * | 2011-09-20 | 2013-04-03 | 海信（山东）空调有限公司 | Control circuit and method of PTC (Positive Temperature Coefficient) auxiliary electric heating of air conditioner |
| CN102548060A (en) * | 2011-12-22 | 2012-07-04 | 广东美的电器股份有限公司 | PTC electric heating device and method for controlling same |
| WO2014040988A2 (en) * | 2012-09-11 | 2014-03-20 | Philip Morris Products S.A. | Device and method for controlling an electrical heater to limit temperature |
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