CN202564502U - Heating control circuit, electric heating equipment and temperature control system - Google Patents
Heating control circuit, electric heating equipment and temperature control system Download PDFInfo
- Publication number
- CN202564502U CN202564502U CN2012201175387U CN201220117538U CN202564502U CN 202564502 U CN202564502 U CN 202564502U CN 2012201175387 U CN2012201175387 U CN 2012201175387U CN 201220117538 U CN201220117538 U CN 201220117538U CN 202564502 U CN202564502 U CN 202564502U
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- contactor
- temperature
- control circuit
- heating control
- temperature controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a heating control circuit, which comprises a temperature controller, an AC contactor and a three-phase balanced load, wherein the temperature controller is used for setting temperature and controlling on-off of the AC contactor according to temperature; the AC contactor is electrically connected with the temperature controller and is used for controlling a connection mode of the three-phase balanced load; and the three-phase balanced load is electrically connected with the AC contactor, the connection mode of the three-phase balanced load is star-shaped or triangular according to the on-off of the AC contactor, and the three-phase balanced load is used for heating an object to be heated. According to the utility model, the three-phase balanced load is star-shaped or triangular through the on-off of the AC contactor, and different voltages can be obtained according to the difference of the connection modes of the three-phase balanced load because the phase voltage in star-shaped connection is 220V and the phase voltage in triangular connection is 380V, therefore the object to be heated is correspondingly heated according to different voltages, temperature is further controlled, and therefore frequency startup and stop of components at a critical temperature point are reduced and even eliminated.
Description
Technical field
The utility model relates to the temperature control technology field, relates in particular to a kind of heating control circuit, electric heating equipment and temperature control system.
Background technology
In the lead acid accumulator manufacture process, need use the equipment that some have heating function, as: lead melting furnace, drying kiln etc.Common mode of heating adopts the three-phase alternating current electrothermal tube to carry out.For satisfying the demand of accumulator green production. art, must carry out electric automatic control to the temperature in the use of electric heating equipment, the temperature stabilization that makes heating environment or parts is in certain scope.In the present electric heating equipment; Adopt a formula control to heat to the design of temperature control system more; That is, on temperature controller, set a given temperature value, make heating element (like electrothermal tube) when ambient temperature actual value is lower than this given temperature value, start heating by technological requirement; When the temperature actual value reaches or is higher than given temperature value, stop heating.
Can play the effect of temperature control to a certain extent though adopt position formula control; But in the temperature control process, also there are some defectives simultaneously; As reducing gradually stopping temperature after heating, need restart heating this moment, makes the components and parts total power frequent starting of control zero point stop; Not only waste a large amount of energy, and frequent startup stops also to cause easily the old speed of decreasing of components and parts.
The utility model content
The technical problem underlying that the utility model will solve is that a kind of heating control circuit, electric heating equipment and temperature control system are provided.
An aspect according to the utility model provides a kind of heating control circuit, comprising: temperature controller is used for design temperature and according to the energising and the outage of temperature control A.C. contactor; With the A.C. contactor that temperature controller electrically connects, be used to control the connected mode of three-phase balancing load; With the three-phase balancing load that A.C. contactor electrically connects, its connected mode is star or triangle according to cut-offfing of A.C. contactor, and said three-phase balancing load is used for to treating the heated object heating.
Said A.C. contactor comprises first contactor, second contactor and the 3rd contactor; First contactor and second contactor are in "on" position simultaneously and the 3rd contactor is in off-position, and the connected mode of three-phase balancing load is triangular in shape; First contactor and the 3rd contactor are in "on" position simultaneously and second contactor is in off-position, and the connected mode of three-phase balancing load is star.
Described heating control circuit also comprises auxiliary relay, and said temperature controller is controlled the energising and the outage of second contactor and the 3rd contactor through the control auxiliary relay.
Described heating control circuit also comprises the temperature sensor that is connected with temperature controller, is used to respond to the actual temperature of treating heated object.
Be provided with predetermined temperature and the predetermined alarm temperature littler than said predetermined temperature in the said temperature controller, the difference of said predetermined temperature and said predetermined alarm temperature is the predetermined difference value; When actual temperature and predetermined difference value sum less than predetermined temperature, temperature controller is realized energising of second contactor and the outage of the 3rd contactor through auxiliary relay; When actual temperature equals predetermined alarm temperature, temperature controller is realized outage of second contactor and the energising of the 3rd contactor through auxiliary relay.
Said temperature sensor is a thermocouple.
Said three-phase balancing load is three electrothermal tubes accepting three-phase alternating current.
Described heating control circuit also comprises the circuit breaker that is connected between A.C. contactor and the temperature controller.
Another aspect according to the utility model provides a kind of electric heating equipment, comprising: aforesaid heating control circuit.
Another aspect according to the utility model provides a kind of temperature control system, comprising: aforesaid heating control circuit.
The beneficial effect of the utility model is: energising and outage through A.C. contactor make three-phase balancing load be star or triangle; Phase voltage was 220V when cause was Y-connection; Phase voltage is 380 during connection triangular in shape, so the difference of the connected mode of three-phase balancing load can obtain different voltages, thereby can heat accordingly for treating heated object according to different voltages; As adopting the 380V heating during far below predetermined temperature when actual temperature; When actual temperature adopts the 220V heating during near predetermined temperature, thereby the control temperature reduces even the frequent starting of eliminating the components and parts of control zero point stops.
Description of drawings
Fig. 1 is the principle schematic of the control circuit of a kind of embodiment of the utility model.
Embodiment
Combine accompanying drawing that the utility model is done further explain through embodiment below.
The utility model embodiment provides a kind of heating control circuit; When the actual temperature of treating heated object was lower than predetermined temperature, the total power Fast Heating was when this actual temperature during near predetermined temperature; Adopt the heating of part power low speed, thereby reach the stable purpose of temperature control.
Be illustrated in figure 1 as the heating control circuit of a kind of embodiment, comprise: temperature controller 100, A.C. contactor and three-phase balancing load.Wherein, A.C. contactor comprises the first contactor KM1, the second contactor KM2 and the 3rd contactor KM3, and temperature controller 100 is used for design temperature and according to energising and the outage of temperature control A.C. contactor KM1, KM2, KM3; A.C. contactor KM1, KM2, KM3 are used to control the connected mode of three-phase balancing load, and three-phase balancing load is used for to treating the heated object heating.Three-phase balancing load is three electrothermal tube R1, R2, the R3 that accepts three-phase alternating current among the embodiment.
Like diagram, as the first contactor KM1 and the second contactor KM2 is in "on" position simultaneously and the 3rd contactor KM3 is in off-position, the connected mode of three-phase balancing load R1, R2, R3 (being △ shape) triangular in shape; The first contactor KM1 and the 3rd contactor KM3 are in "on" position simultaneously and the second contactor KM2 is in off-position, and the connected mode of three-phase balancing load is star (being Y shape).
Like diagram, temperature controller 100 cut-offs with closed according to temperature control auxiliary relay KA, thereby controls energising and the outage of the second contactor KM2 and the 3rd contactor KM3 through the switching of auxiliary relay KA.Temperature controller 100 is to cut-off with closed according to temperature control auxiliary relay KA.Temperature controller 100 is responded to the actual temperature of treating heated object through external temperature sensor TC, then this actual temperature and temperature controller 100 temperature of setting own is compared, and KA cut-offs and closure according to comparative result control auxiliary relay.Temperature sensor TC is a thermocouple among the embodiment, can also be thermistor etc. among other embodiment.
In a kind of concrete realization, be provided with predetermined temperature TA and the predetermined alarm temperature TB littler than predetermined temperature TA in the temperature controller, the difference of establishing predetermined temperature TA and predetermined alarm temperature TB is predetermined difference value Δ T, and this predetermined difference value can be an empirical value.When actual temperature T and predetermined difference value Δ T sum less than predetermined temperature TA; Temperature controller is realized second contactor KM2 energising and the 3rd contactor KM3 outage through auxiliary relay KA, and this moment, the running order of circuit was: the coil of KM1 and the coil electricity of KM2, the coil blackout of KM3; The main contacts of KM1 and KM2 and normally opened contact are closed; Make the method that connects of three-phase balancing load be △ shape, phase voltage is 380V, and promptly three-phase balancing load adopts 380V to heat.When actual temperature T equals predetermined alarm temperature TB; Temperature controller is realized second contactor KM2 outage and the 3rd contactor KM3 energising through auxiliary relay KA, and this moment, the running order of circuit was: the coil of KM1 and the coil electricity of KM3, KM2 outage; The main contacts of KM1 and KM3 is closed; Make three-phase balancing load to connect method Y-shaped, phase voltage is 220V, promptly three-phase balancing load adopts 220V to heat.
As shown in Figure 1, can also comprise the circuit breaker Q F1 and the QF2 that are connected between A.C. contactor and the temperature controller among the embodiment, be used for protective circuit.
A kind of embodiment of the utility model also provides a kind of electric heating equipment, the heating control circuit that adopts the foregoing description to provide in this electric heating equipment.
The another kind of embodiment of the utility model also provides a kind of temperature control system, the heating control circuit that adopts the foregoing description to provide in this temperature control system.
To sum up, the utility model embodiment through with three-phase equilibrium AC load (electric heating tube) by star or triangle mode connect with circuit in, in temperature controller, set point is set at the temperature that needs control, with its control output end control star operating loop; The lower limit alarming value of temperature control instrument is set at a temperature value that is lower than and closes on needs control, and utilizes its lower limit warning output relay control triangle operating loop.Make and to adopt phase voltage 380V total power delta connection to heat during far below set point when the temperature actual value; When the temperature actual value adopts the heating of phase voltage 220V part power star connection during near set point; Can guarantee Fast Heating to reach promptly; Can stablize again, the effect of energy-conservation temperature control, simultaneously, this circuit structure simply is easy to realize.
The foregoing description is giving an example of the utility model; Although disclose the most preferred embodiment and the accompanying drawing of the utility model for the purpose of illustration; But it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the utility model and appended claim, various replacements, variation and modification all are possible.Therefore, the utility model should not be limited to most preferred embodiment and the disclosed content of accompanying drawing.
Claims (10)
1. a heating control circuit is characterized in that, comprising:
Temperature controller is used for design temperature and according to the energising and the outage of temperature control A.C. contactor;
With the A.C. contactor that temperature controller electrically connects, be used to control the connected mode of three-phase balancing load;
With the three-phase balancing load that A.C. contactor electrically connects, its connected mode is star or triangle according to the energising and the outage of A.C. contactor, and said three-phase balancing load is used for to treating the heated object heating.
2. heating control circuit as claimed in claim 1 is characterized in that, said A.C. contactor comprises first contactor, second contactor and the 3rd contactor; First contactor and second contactor are in "on" position simultaneously and the 3rd contactor is in off-position, and the connected mode of three-phase balancing load is triangular in shape; First contactor and the 3rd contactor are in "on" position simultaneously and second contactor is in off-position, and the connected mode of three-phase balancing load is star.
3. heating control circuit as claimed in claim 2 is characterized in that, also comprises auxiliary relay, and said temperature controller is controlled the energising and the outage of second contactor and the 3rd contactor through the control auxiliary relay.
4. heating control circuit as claimed in claim 3 is characterized in that, also comprises the temperature sensor that is connected with temperature controller, is used to respond to the actual temperature of treating heated object.
5. heating control circuit as claimed in claim 4 is characterized in that, is provided with predetermined temperature and the predetermined alarm temperature littler than said predetermined temperature in the said temperature controller, and the difference of said predetermined temperature and said predetermined alarm temperature is the predetermined difference value; When actual temperature and predetermined difference value sum less than predetermined temperature, temperature controller is realized energising of second contactor and the outage of the 3rd contactor through auxiliary relay; When actual temperature equals predetermined alarm temperature, temperature controller is realized outage of second contactor and the energising of the 3rd contactor through auxiliary relay.
6. heating control circuit as claimed in claim 5 is characterized in that, said temperature sensor is a thermocouple.
7. like each described heating control circuit of claim 1-6, it is characterized in that said three-phase balancing load is three electrothermal tubes accepting three-phase alternating current.
8. heating control circuit as claimed in claim 7 is characterized in that, also comprises the circuit breaker that is connected between A.C. contactor and the temperature controller.
9. an electric heating equipment is characterized in that comprising: like each described heating control circuit of claim 1-8.
10. a temperature control system is characterized in that comprising: like each described heating control circuit of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201175387U CN202564502U (en) | 2012-03-26 | 2012-03-26 | Heating control circuit, electric heating equipment and temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201175387U CN202564502U (en) | 2012-03-26 | 2012-03-26 | Heating control circuit, electric heating equipment and temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202564502U true CN202564502U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201175387U Expired - Lifetime CN202564502U (en) | 2012-03-26 | 2012-03-26 | Heating control circuit, electric heating equipment and temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202564502U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226341A (en) * | 2016-06-30 | 2016-12-14 | 成都理工大学 | A kind of temperature loading system simulating underground engineering ground temperature |
| CN112399652A (en) * | 2020-11-19 | 2021-02-23 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Heating pipe control method and heating system |
-
2012
- 2012-03-26 CN CN2012201175387U patent/CN202564502U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226341A (en) * | 2016-06-30 | 2016-12-14 | 成都理工大学 | A kind of temperature loading system simulating underground engineering ground temperature |
| CN106226341B (en) * | 2016-06-30 | 2019-07-23 | 成都理工大学 | A kind of temperature loading system for simulating underground engineering ground temperature |
| CN112399652A (en) * | 2020-11-19 | 2021-02-23 | 宣城睿晖宣晟企业管理中心合伙企业(有限合伙) | Heating pipe control method and heating system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
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| CX01 | Expiry of patent term |