CN201845243U - Temperature controller - Google Patents
Temperature controller Download PDFInfo
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- CN201845243U CN201845243U CN2010201997170U CN201020199717U CN201845243U CN 201845243 U CN201845243 U CN 201845243U CN 2010201997170 U CN2010201997170 U CN 2010201997170U CN 201020199717 U CN201020199717 U CN 201020199717U CN 201845243 U CN201845243 U CN 201845243U
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Abstract
The utility module discloses a temperature controller, which comprises a first power supply input interface, a second power supply input interface and a main control module, wherein the first power supply input interface and the second power supply input interface are used for inputting AC (alternative current), a temperature safety module and a power supply converting module are connected between the first power supply input interface and the second power supply input interface, the first input end of the main control module is connected with the power supply converting module, and the second input end of the main control module is connected with the first power supply input interface or the second power supply input interface through a power supply detection module. The temperature controller can conveniently realize the constant-temperature control so as to prevent the local high temperature of a heating body.
Description
Technical field
The utility model relates to temperature controller, specifically is applied to the temperature controller of electric blanket temperature control.
Background technology
Temperature controller is a kind of control instrument of widespread use, has a variety of as temperature controlled instrument at present.This quasi-instrument adopts thermistor to make sensor more, and certain temperature transition is become certain voltage or current value, with a voltage of setting or current value ratio, control with the result of comparison and whether to heat.
For example patent name is a temperature controller, the patent No. a kind of temperature controller that has been 88209493.9 patent disclosure comprises a temperature measurement circuit, ambient temperature compensation circuit, temperature preset circuit, the signal compensation that is coupled to above-mentioned three circuit and a comparator circuit, is coupled to the control circuit of described signal compensation and comparator circuit.Described temperature measurement circuit comprises that a difference with dut temperature and environment temperature changes into temperature sensor and first amplifying circuit that produces temperature signal of electric signal, described ambient temperature compensation circuit comprises a potential-divider network of being made up of conventional, electric-resistance and thermal resistance, as the environment temperature converter, also comprise second amplifying circuit that produces the temperature compensation electric signal; Described temperature preset circuit comprises the bleeder circuit of the generation preset temperature signal of an Adjustable Output Voltage, and described signal compensation and comparator circuit comprise a totalizer, and described control circuit comprises a relay.In addition, described signal compensation and comparator circuit are coupled to described control circuit by a driving circuit.
The temperature controller of this patent disclosure, structure are complicated, do not possess the function that realizes thermostatic control and prevent calandria localized hyperthermia.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned prior art present situation, and the temperature controller that can realize thermostatic control easily and prevent calandria localized hyperthermia is provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: temperature controller, comprise first power input interface and the second source input interface that are used for the input AC electricity, and main control module, be connected with Temperature protection module and power transfer module between first power input interface and the second source input interface, the first input end of main control module connects power transfer module, and second input end of main control module connects first power input interface or second source input interface by the power supply detection module.
For optimizing technique scheme, the measure of taking also comprises:
The branch road that series connection is made up of bidirectional thyristor, first resistance and posistor between first above-mentioned power input interface and second source input interface, the first input end of main control module is connected with detection branch, and the other end of this detection branch connects the contact between first resistance and the bidirectional thyristor; First power input interface or second source input interface are in series with the dividing potential drop branch road of ground connection, and this dividing potential drop branch road is connected with the reference voltage branch road that detects supply voltage, and this reference voltage branch road connects second input end of main control module; Be provided for the comparer of the comparison first input end voltage and second input terminal voltage in the described main control module.
Above-mentioned dividing potential drop props up route first divider resistance and second divider resistance is formed, and dividing potential drop branch road one end connects first power input interface or second source input interface, other end ground connection; Contact is connected between second input end of described main control module and first divider resistance and second divider resistance.
Above-mentioned posistor peripheral hardware is useful on the negative temperature coefficient insulating material of overheat protector, and this negative temperature coefficient insulating material is connected with the 3rd input end of main control module.
Above-mentioned posistor is the heating line.
Above-mentioned main control module is connected with the electric heating element temperature detecting module that is used to detect electric heating element.
Above-mentioned main control module is connected with the timing setting module.
Above-mentioned main control module is connected with the temperature setting module.
Above-mentioned main control module is connected with display module.
Compared with prior art, temperature controller of the present utility model is connected with Temperature protection module and power transfer module between first power input interface and second source input interface.The method that adopts current detecting is to carrying out temperature detecting, utilize the characteristic of posistor, in output heating process, along with the temperature rising of posistor, the resistance value of posistor also increases, and output current will be on the contrary along with reduction so.Electric current absolute value after the main control module will reduce in advance is set at the temperature value that the user needs, so in the heating control procedure, as long as the main control module detects and just closes output when output current reaches the predetermined current value, illustrate that temperature has reached requirement, close output after, the temperature of posistor will stop to rise, and temperature discharged gradually, after waiting temperature reduces, control circuit will be exported heating again once more, and so cycle control reaches the purpose of constant temperature.And, the intermediate insulating layer of posistor is the negative temperature coefficient insulating material that is negative temperature coefficient, when high temperature, will cause the insulation impedance of negative temperature coefficient insulating material to reduce, judge that the leakage current of power supply on the negative temperature coefficient insulating material just can judge whether heater high temperataure phenomena occurs.
Description of drawings
Fig. 1 is the module principle figure of temperature controller of the present utility model;
Fig. 2 is the partial circuit diagram among Fig. 1;
Fig. 3 is the partial circuit diagram among Fig. 1;
Fig. 4 is that first kind of Fig. 1 implemented circuit diagram;
Fig. 5 is that second kind of Fig. 1 implemented circuit diagram.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is to Figure 4 shows that structural representation of the present utility model.
Module principle figure as shown in Figure 1, temperature controller of the present utility model, comprise main control module U1, the main control module is connected with first power input interface and the second source input interface that timing setting module, temperature setting module, display module are used for the input AC electricity.Main control module U1 is connected with electric heating element by switch module, and main control module U1 is connected with the electric heating element temperature detecting module that is used to detect electric heating element.Main control module U1 is miniature control module MCU.First power input interface and second source input interface are used to be connected the zero line and the live wire of civil power.
The utlity model has the temperature control function, be between first power input interface and second source input interface, to be connected with Temperature protection module and power transfer module, the first input end P50 of main control module U1 connects power transfer module, and the second input end P51 of main control module U1 connects first power input interface or second source input interface by the power supply detection module.
Temperature controller is to adopt the method for current detecting to carrying out temperature detecting, utilize the characteristic of posistor, in output heating process, temperature rising along with posistor, the resistance value of posistor also increases, and output current will be on the contrary along with reduction so.Electric current absolute value after main control module U1 will reduce in advance is set at the temperature value that the user needs, so in the heating control procedure, as long as main control module U1 detects and just closes output when output current reaches the predetermined current value, illustrate that temperature has reached requirement, close output after, the temperature of posistor will stop to rise, and temperature discharged gradually, after waiting temperature reduces, control circuit will be exported heating again once more, and so cycle control reaches the purpose of constant temperature.In the utility model, posistor mainly adopts PTC heating line, but is not limited thereto.
As shown in Figure 2, the branch road that series connection is made up of bidirectional thyristor T1TRIAC, the first resistance FR1 and PTC heating line between first power input interface and second source input interface, be provided with the detection branch of the sampling first resistance FR1 voltage at the end of the first resistance FR1, this detection branch connects the first input end P50 of main control module U1.On detection branch, also can be in series with second resistance R 16 that is used to prevent overcurrent.First power input interface or second source input interface are in series with the dividing potential drop branch road of ground connection, and this dividing potential drop branch road is connected with the reference voltage branch road of sampling reference voltage, and this reference voltage branch road connects the second input end P51 of main control module U1.Be provided for the comparer of the comparison first input end P50 and the second input end P51 voltage in the described main control module U1.
Dividing potential drop props up the route first divider resistance R18 and the second divider resistance R20 forms, and dividing potential drop branch road one end connects first power input interface or second source input interface, other end ground connection.The second input end P51 of described main control module U1 is connected with contact between first divider resistance and second divider resistance.
Power supply produces bearing power through PTC heating line, bidirectional thyristor T1 TRIAC and the first resistance FR1 and carries out heating work, produces the current voltage distribution value at the first resistance FR1 place and offers main control module U1 inside to detect voltage swing by second resistance R 16.Other one the tunnel, the voltage that power supply produces through the first divider resistance R18 and the second divider resistance R20 dividing potential drop offers also that main control module U1 is inner to detect voltage, and with this voltage as reference voltage, the voltage at the first resistance FR1 place is voltage as a comparison.Under original state, comparative voltage is higher than reference voltage, so main control module U1 continues heating PTC heating line, after temperature reaches, the first resistance FR1 place voltage illustrates that smaller or equal to reference voltage temperature arrives, and main control module U1 promptly stops transwitch, cut off load current, guarantee temperature constant.
When the improper use of product, the part can appear or the single-point temperature is too high, and temperature controller of the present utility model has the function that prevents heater localized hyperthermia.
As shown in Figure 3, be useful on the negative temperature coefficient insulating material NTC of overheat protector at the posistor peripheral hardware, this negative temperature coefficient insulating material NTC is connected with the 3rd input end of main control module U1.
The intermediate insulating layer of PTC heating line is the negative temperature coefficient insulating material NTC that is negative temperature coefficient, when high temperature, will cause the insulation impedance of negative temperature coefficient insulating material NTC to reduce, judge that the leakage current of power supply on negative temperature coefficient insulating material NTC just can judge whether heater high temperataure phenomena occurred.At first close controllable silicon; avoid other undesired signals or shunting circuit to influence check result; its process is that power end is through PTC heating line; negative temperature coefficient insulating material NTC; the 3rd resistance R 22; the 4th resistance R 21; the 3rd input end of the 5th resistance R 19 resistance and main control module U1 is set up the leakage current loop; when as long as this leakage current is enough to reach the high level threshold voltage of main control module U1 in the voltage drop that produces; main control module U1 judgement has been high level; it is the localized hyperthermia that product occurs; the high temperature sign is put 1; after the end check program; stop heating and will arrive in the safe range up to localized hyperthermia point temperature and just heat again, so circular test is controlled and is reached the overheat protector purpose.
As shown in Figure 4, be first kind of enforcement circuit diagram of temperature controller of the present utility model, Fig. 5 is that second kind of temperature controller implemented circuit diagram.Temperature controller of the present utility model is not limited to the circuit diagram embodiment of Fig. 4 and Fig. 5.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (9)
1. temperature controller, comprise first power input interface and the second source input interface that are used for the input AC electricity, and main control module (U1), it is characterized in that: be connected with Temperature protection module and power transfer module between described first power input interface and the second source input interface, the first input end of main control module (U1) connects power transfer module, and second input end of main control module (U1) connects first power input interface or second source input interface by the power supply detection module.
2. temperature controller according to claim 1, it is characterized in that: the branch road that series connection is made up of bidirectional thyristor (T1TRIAC), first resistance (FR1) and posistor between described first power input interface and the second source input interface, the first input end of main control module (U1) is connected with detection branch, and the other end of this detection branch connects the contact between first resistance (FR1) and the bidirectional thyristor (T1TRIAC); Described first power input interface or second source input interface are in series with the dividing potential drop branch road of ground connection, and this dividing potential drop branch road is connected with the reference voltage branch road that detects supply voltage, and this reference voltage branch road connects second input end of main control module (U1); Be provided for the comparer of the comparison first input end voltage and second input terminal voltage in the described main control module (U1).
3. temperature controller according to claim 2, it is characterized in that: described dividing potential drop props up route first divider resistance (R18) and second divider resistance (R20) is formed, dividing potential drop branch road one end connects first power input interface or second source input interface, other end ground connection; Contact is connected between second input end of described main control module (U1) and first divider resistance and second divider resistance.
4. temperature controller according to claim 3; it is characterized in that: described posistor peripheral hardware is useful on the negative temperature coefficient insulating material (NTC) of overheat protector, and this negative temperature coefficient insulating material (NTC) is connected with the 3rd input end of main control module (U1).
5. temperature controller according to claim 4 is characterized in that: described posistor is a PTC heating line.
6. according to the described temperature controller of the arbitrary claim of claim 1 to 5, it is characterized in that: described main control module (U1) is connected with the electric heating element temperature detecting module that is used to detect electric heating element.
7. temperature controller according to claim 6 is characterized in that: described main control module (U1) is connected with the timing setting module.
8. temperature controller according to claim 7 is characterized in that: described main control module (U1) is connected with the temperature setting module.
9. temperature controller according to claim 8 is characterized in that: described main control module (U1) is connected with display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201997170U CN201845243U (en) | 2010-05-21 | 2010-05-21 | Temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201997170U CN201845243U (en) | 2010-05-21 | 2010-05-21 | Temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845243U true CN201845243U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201997170U Expired - Fee Related CN201845243U (en) | 2010-05-21 | 2010-05-21 | Temperature controller |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049017A (en) * | 2012-12-26 | 2013-04-17 | 青岛盛嘉信息科技有限公司 | Electric blanket constant temperature circuit |
| CN103197711A (en) * | 2013-02-28 | 2013-07-10 | 彭凯文 | Negative temperature coefficient (NTC) single temperature control circuit and temperature control method thereof |
| CN103197706A (en) * | 2012-01-09 | 2013-07-10 | 王清传 | Temperature control method of hot wire |
| CN103294083A (en) * | 2013-02-28 | 2013-09-11 | 彭凯文 | PTC and NTC double-temperature-control circuit and temperature control method thereof |
| CN108422828A (en) * | 2018-03-13 | 2018-08-21 | 北京新能源汽车股份有限公司 | Electric heater control system and electric automobile |
| CN109526069A (en) * | 2018-11-14 | 2019-03-26 | 深圳市国赛生物技术有限公司 | Overtemperature protection circuit and on-site rapid inspection instrument |
| US11765794B2 (en) | 2019-02-28 | 2023-09-19 | Fka Distributing Co., Llc | Portable heating apparatus with temperature-retaining component |
-
2010
- 2010-05-21 CN CN2010201997170U patent/CN201845243U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197706A (en) * | 2012-01-09 | 2013-07-10 | 王清传 | Temperature control method of hot wire |
| CN103049017A (en) * | 2012-12-26 | 2013-04-17 | 青岛盛嘉信息科技有限公司 | Electric blanket constant temperature circuit |
| CN103197711A (en) * | 2013-02-28 | 2013-07-10 | 彭凯文 | Negative temperature coefficient (NTC) single temperature control circuit and temperature control method thereof |
| CN103294083A (en) * | 2013-02-28 | 2013-09-11 | 彭凯文 | PTC and NTC double-temperature-control circuit and temperature control method thereof |
| CN103294083B (en) * | 2013-02-28 | 2015-05-20 | 彭凯文 | PTC and NTC double-temperature-control circuit |
| CN103197711B (en) * | 2013-02-28 | 2015-05-20 | 彭凯文 | Negative temperature coefficient (NTC) single temperature control circuit and temperature control method thereof |
| CN108422828A (en) * | 2018-03-13 | 2018-08-21 | 北京新能源汽车股份有限公司 | Electric heater control system and electric automobile |
| CN109526069A (en) * | 2018-11-14 | 2019-03-26 | 深圳市国赛生物技术有限公司 | Overtemperature protection circuit and on-site rapid inspection instrument |
| US11765794B2 (en) | 2019-02-28 | 2023-09-19 | Fka Distributing Co., Llc | Portable heating apparatus with temperature-retaining component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20140521 |