CN2771735Y - Temp.-control protection and over-limit alarming circuit and apparatus thereof - Google Patents

Temp.-control protection and over-limit alarming circuit and apparatus thereof Download PDF

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Publication number
CN2771735Y
CN2771735Y CN 200420085438 CN200420085438U CN2771735Y CN 2771735 Y CN2771735 Y CN 2771735Y CN 200420085438 CN200420085438 CN 200420085438 CN 200420085438 U CN200420085438 U CN 200420085438U CN 2771735 Y CN2771735 Y CN 2771735Y
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circuit
resistance
temperature
temperature control
limit
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CN 200420085438
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Chinese (zh)
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苏文瑞
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Abstract

The utility model relates to a temperature control protecting and out-of-limit alarm circuit and a device thereof. The circuit is formed by that a power supply circuit, a temperature identifying circuit, a vibrator and an acoustic-optic alarm are connected in series in sequence, wherein the temperature identifying circuit is connected with the acoustic-optic alarm; an out-of-limit distinguishing circuit is connected with the acoustic-optic alarm; a power distribution circuit is connected with the temperature identifying circuit; the out-of-limit distinguishing circuit is also connected with a temperature control device. The device comprises a temperature control plate, a power supply circuit, an interface of a heating source, and a wire connecting terminal, wherein the temperature control plate is provided with the temperature control protecting and out-of-limit alarm circuit, the wire connecting terminal is connected with an external power supply and the power distribution circuit on the temperature control plate, and the wire connecting terminal is connected with the interface of the heating source through a conducting wire so that the power supply is provided for the interface of the heating source according to the control of the temperature identifying circuit connected with the power distribution circuit. The utility model has the functions of adjustable and preset temperature automatic control, overheat high temperature automatic protection and overtemperature out-of-limit acoustic-optic alarm, and the utility model has the advantages of simple circuit, high accuracy, small volume, light weight, low manufacture cost and electric energy saving.

Description

Temperature control protection and off-limit alarm circuit and device thereof
Technical field
The utility model relates to a kind of temperature alarming device.Particularly relate to a kind of temperature control protection and off-limit alarm circuit and device thereof.
Background technology
At present in relating to technology such as electronics is temperature automatically controlled, high temperature protection, overtemperature off-limit alarm, its complex circuit designs, the manufacturing cost height, volume is big.Simple electronic temperature control device on market, price is more than tens of units, and volume is quite big.Though the temperature controller low price of mechanical contact-type, its easy inefficacy, service life is short.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of circuit is simple, cost is low, volume is little temperature control protection and off-limit alarm circuit and device thereof are provided.
The technical scheme that the utility model adopted is: a kind of temperature control protection and off-limit alarm circuit, include power circuit, also include temperature discriminator circuit, oscillator, audible-visual annunciator, out-of-limit judging circuit and distributing electric power circuit, wherein, power circuit, temperature discriminator circuit, oscillator, audible-visual annunciator are connected in series successively; The temperature discriminator circuit also links to each other with audible-visual annunciator; Out-of-limit judging circuit links to each other with audible-visual annunciator; The distributing electric power circuit links to each other with the temperature discriminator circuit; Out-of-limit judging circuit also connects temperature controller.
A kind of temperature control protection and off-limit alarm device include housing, are equipped with in housing: temperature control plate, and it is provided with temperature discriminator circuit, oscillator, audible-visual annunciator, out-of-limit judging circuit, distributing electric power circuit; Circuit on temperature control plate provides the power circuit of power supply; Be used to connect the heating source interface of heating source; Binding post, it links to each other with external power supply, also links to each other with distributing electric power circuit on the temperature control plate, and links to each other with the heating source interface by lead, thereby provide power supply according to the control of the temperature discriminator circuit that links to each other with the distributing electric power circuit to the heating source interface.
The utility model is owing to adopt said structure, has that adjustable/design temperature is controlled automatically, overheated high temperature is protected automatically, the function of the out-of-limit sound and light alarm of overtemperature (anti-dry).Circuit design is simple, the accuracy height, and volume is little, and is in light weight, and low cost of manufacture is saved electric energy, and safe and reliable, adjustable temperature range is wide, long service life, installation and maintenance are convenient.Applicable to various electric heaters and electric heating equipment.
Description of drawings
Fig. 1 is temperature control protection of the present utility model and off-limit alarm circuit block diagram;
Fig. 2 is the circuit theory diagrams of temperature control protection of the present utility model and off-limit alarm circuit;
Fig. 3 is the structural representation of temperature control protection of the present utility model and off-limit alarm device;
Fig. 4 is the front schematic view of Fig. 3 internal structure.
The specific embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.
As shown in Figure 1, a kind of temperature control protection and off-limit alarm circuit, include power circuit 1, also include temperature discriminator circuit 2, oscillator 3, audible-visual annunciator 4, out-of-limit judging circuit 5 and distributing electric power circuit 6, wherein, power circuit 1, temperature discriminator circuit 2, oscillator 3, audible-visual annunciator 4 are connected in series successively; Temperature discriminator circuit 2 also links to each other with audible-visual annunciator 4; Out-of-limit judging circuit 5 links to each other with audible-visual annunciator 4; Distributing electric power circuit 6 links to each other with temperature discriminator circuit 2; Out-of-limit judging circuit 5 also connects temperature controller 9.
Fig. 2 is the circuit theory diagrams of temperature control protection of the present utility model and off-limit alarm circuit.As shown in Figure 2:
Described power circuit 1 includes: transformer T, rectification circuit A, regulator block D, capacitor C 1, C 2, C 3, the input termination power of transformer T, output termination rectification circuit A, the two termination capacitor C in addition of rectification circuit A 1Two ends, the termination capacitor C of regulator block D 1Positive terminal, other end ground connection, the 3rd end is a power output end, capacitor C 2, C 3Two ends after being in parallel connect respectively on the positive and negative terminal of power supply.Wherein, it is 7805 regulator block that regulator block D selects model for use, and transformer T selects the transformer of 220V to 9V for use.
Described temperature discriminator circuit 2 includes: resistance R 1～R 7, R 9～R 10, potentiometer W, capacitor C 4, C 5, operational amplifier F 1, F 2, triode G 1Constitute, wherein, capacitor C 4Two ends connect the positive and negative terminal of power circuit 1 output, resistance R respectively 1, R 2A termination power positive pole, resistance R 1The other end and triode G 1Colelctor electrode, base stage, capacitor C 5An end meet operational amplifier F jointly 1Inverting input 1, triode G 1Grounded emitter, resistance R 2The other end and potentiometer W, resistance R 3, R 4Ground connection after connecting successively, adjustable end and the resistance R of potentiometer W 5An end concatenation operation amplifier F 1In-phase input end 2, resistance R 5The other end and capacitor C 5Another termination operational amplifier F 1Output 3, operational amplifier F 1Output 3 also pass through resistance R 6Meet operational amplifier F 2Inverting input 1, operational amplifier F 2In-phase input end 2 pass through resistance R 7Meet operational amplifier F 2Output 3, operational amplifier F 2Output 3 pass through resistance R 9Link to each other operational amplifier F with distributing electric power circuit 6 2Output 3 also pass through resistance R 9, R 10Link to each other with audible-visual annunciator 4.
Triode G in the circuit 1As temperature sensor 11; Resistance R 4Two ends form test point S.
The operational amplifier F of foregoing circuit in the present embodiment 1, F 2Selecting model for use is the integrated package of T62.Thereby this circuit controling temperature is can be accurately adjustable arbitrarily in-10 ℃ to+120 ℃ the scope.Its error is in ± 1 ℃.And temperature range can be controlled arbitrarily from 1K to 20K between ascending temperature induction point and the decline temperature sense point.
Described out-of-limit judging circuit 5 includes: resistance R 8, R 11～R 15, capacitor C 6, two NAND gate IC 2, triode G 3, LED 1Constitute, wherein, two NAND gate IC 2Input and resistance R 11Connect temperature controller 9 together, two NAND gate IC 2Input also pass through capacitor C 6Ground connection, two NAND gate IC 2Output pass through resistance R 12, capacitor C 6Ground connection, two NAND gate IC 2Output also pass through resistance R 13Meet triode G 3Base stage, and also link to each other triode G with audible-visual annunciator 4 3Grounded emitter, colelctor electrode connecting resistance R 14, R 15, resistance R 15The other end pass through resistance R 8And LED 1Series connection after connect audible-visual annunciator 4, resistance R 11, R 14Another termination power.
Connecing temperature controller 9 in the present embodiment, to select model for use be the temperature controller of RS-9700.
Described oscillator 3 includes: resistance R 16～R 18, capacitor C 7, two NAND gate IC 1Constitute, wherein, two NAND gate IC 1An input pass through resistance R 18Jointing temp discriminator circuit 2, pass through resistance R 16Connect power supply, another input 2 passes through resistance R respectively 17Meet the input E of second NAND gate, and pass through capacitor C 7Meet two NAND gate IC 1Output, output termination audible-visual annunciator 4.
It is the integrated package of CD40195 that two NAND gate IC in above-mentioned two circuit in the present embodiment select model for use.
Described audible-visual annunciator 4 includes: diode D 2, D 3, LED 2, resistance R 19, R 20, triode G 4, buzzer B constitutes, wherein: resistance R 19With LED 2Series connection, one termination oscillator 3, other end ground connection, diode D 2, D 3Positive pole meet out-of-limit decision circuitry 5, diode D 2Negative pole jointing temp discriminator circuit 2, diode D 3Negative pole pass through resistance R 20Meet triode G 4Base stage, triode G 4Grounded emitter, colelctor electrode meets buzzer B, another termination power of buzzer B.
Described distributing electric power circuit 6 includes: triode G 2, protection diode D 1, relay F constitutes, wherein: triode G 2Base stage jointing temp discriminator circuit 2, triode G 2Grounded emitter, collector connecting relay F and protection diode D 1An end, relay F and diode D 1Another termination power.
It is the relay of RF-13 that the relay F of foregoing circuit in the present embodiment selects model for use.
As shown in Figure 3, Figure 4, temperature control protection and off-limit alarm device include housing 7, are equipped with in housing 7: temperature control plate 10, and it is provided with temperature discriminator circuit 2, oscillator 3, audible-visual annunciator 4, out-of-limit judging circuit 5, distributing electric power circuit 6; Circuit on temperature control plate 10 provides the power circuit 1 of power supply; Be used to connect the heating source interface 8 of heating source; Binding post 12, it links to each other with external power supply, also link to each other with distributing electric power circuit 6 on the temperature control plate 10, and link to each other with heating source interface 8 by lead, binding post 12 and distributing electric power circuit 6 common composition power distributor, thus power supply provided according to the control of the temperature discriminator circuit 2 that links to each other with distributing electric power circuit 6 to heating source interface 8.Heating source interface 8 can connect various heating members, as electrically heated rod etc.
In the present embodiment, heating source interface 8 is designed to the interface of the two group of three-wire type electrical-heating source, is used for being connected with the two group of three-wire type electrically heated rod, can be used on the superconducting fluid electric heater.It is the binding post of JB-1504 that binding post 12 is selected model for use.
Described power circuit 1 links to each other with temperature discriminator circuit 2 on the temperature control plate 10, temperature discriminator circuit 2 links to each other with oscillator 3 and audible-visual annunciator 4, oscillator 3 links to each other with audible-visual annunciator, and audible-visual annunciator 4 links to each other with out-of-limit judging circuit 5, and temperature discriminator circuit 2 also links to each other with distributing electric power circuit 6.
The LED that is used to report to the police on out-of-limit judging circuit 5 and the audible-visual annunciator 4 1, LED 2, the temperature controller 9 that links to each other with out-of-limit judging circuit 5 and in temperature discriminator circuit 2 as the triode G of sensor 11 usefulness 1All be arranged on the panel of housing 7.Wherein LED is a dichromatic LED.

Claims (10)

1. temperature control protection and off-limit alarm circuit, include power circuit (1), it is characterized in that, also include temperature discriminator circuit (2), oscillator (3), audible-visual annunciator (4), out-of-limit judging circuit (5) and distributing electric power circuit (6), wherein, power circuit (1), temperature discriminator circuit (2), oscillator (3), audible-visual annunciator (4) are connected in series successively; Temperature discriminator circuit (2) also links to each other with audible-visual annunciator (4); Out-of-limit judging circuit (5) links to each other with audible-visual annunciator (4); Distributing electric power circuit (6) links to each other with temperature discriminator circuit (2); Out-of-limit judging circuit (5) also connects temperature controller (9).
2. temperature control protection according to claim 1 and off-limit alarm circuit is characterized in that, described temperature discriminator circuit (2) includes: resistance R 1～R 7, R 9～R 10, potentiometer W, capacitor C 4, C 5, operational amplifier F 1, F 2, triode G 1Constitute, wherein, capacitor C 4Two ends connect the positive and negative terminal of power circuit (1) output, resistance R respectively 1, R 2A termination power positive pole, resistance R 1The other end and triode G 1Colelctor electrode, base stage, capacitor C 5An end meet operational amplifier F jointly 1Inverting input 1, triode G 1Grounded emitter, resistance R 2The other end and potentiometer W, resistance R 3, R 4Ground connection after connecting successively, adjustable end and the resistance R of potentiometer W 5An end concatenation operation amplifier F 1In-phase input end 2, resistance R 5The other end and capacitor C 5Another termination operational amplifier F 1Output 3, operational amplifier F 1Output 3 also pass through resistance R 6Meet operational amplifier F 2Inverting input 1, operational amplifier F 2In-phase input end 2 pass through resistance R 7Meet operational amplifier F 2Output 3, operational amplifier F 2Output 3 pass through resistance R 9Link to each other operational amplifier F with distributing electric power circuit (6) 2Output 3 also pass through resistance R 9, R 10 withAudible-visual annunciator (4) links to each other.
3. temperature control protection according to claim 2 and off-limit alarm circuit is characterized in that, described triode G 1As temperature sensor (11); Resistance R 4Two ends form test point S.
4. temperature control protection according to claim 1 and off-limit alarm circuit is characterized in that, described out-of-limit judging circuit (5) includes: resistance R 8, R 11～R 15, capacitor C 6, two NAND gate IC 2, triode G 3, LED 1Constitute, wherein, two NAND gate IC 2Input and resistance R 11Connect temperature controller (9) together, two NAND gate IC 2Input also pass through capacitor C 6Ground connection, two NAND gate IC 2Output pass through resistance R 12, capacitor C 6Ground connection, two NAND gate IC 2Output also pass through resistance R 13Meet triode G 3Base stage, and also link to each other triode G with audible-visual annunciator (4) 3Grounded emitter, colelctor electrode connecting resistance R 14, R 15, resistance R 15The other end pass through resistance R 8And LED 1Series connection after connect audible-visual annunciator (4), resistance R 11, R 14Another termination power.
5. temperature control protection according to claim 1 and off-limit alarm circuit is characterized in that, described oscillator (3) includes: resistance R 16～R 18, capacitor C 7, two NAND gate IC 1Constitute, wherein, two NAND gate IC 1An input pass through resistance R 18Jointing temp discriminator circuit (2), pass through resistance R 16Connect power supply, another input 2 passes through resistance R respectively 17Meet the input E of second NAND gate, and pass through capacitor C 7Meet two NAND gate IC 1Output, output termination audible-visual annunciator (4).
6. temperature control protection according to claim 1 and off-limit alarm circuit is characterized in that, described audible-visual annunciator (4) includes: diode D 2, D 3, LED 2, resistance R 19, R 20, triode G 4, buzzer B constitutes, wherein: resistance R 19With LED 2Series connection, one termination oscillator (3), other end ground connection, diode D 2, D 3Positive pole meet out-of-limit decision circuitry (5), diode D 2Negative pole jointing temp discriminator circuit (2), diode D 3Negative pole pass through resistance R 20Meet triode G 4Base stage, triode G 4Grounded emitter, colelctor electrode meets buzzer B, another termination power of buzzer B.
7. temperature control protection according to claim 1 and off-limit alarm circuit is characterized in that, described distributing electric power circuit (6) includes: triode G 2, protection diode D 1, relay F constitutes, wherein: triode G 2Base stage jointing temp discriminator circuit (2), triode G 2Grounded emitter, collector connecting relay F and protection diode D 1An end, relay F and diode D 1Another termination power.
8. temperature control protection and off-limit alarm device, including housing (7) is characterized in that, in housing (7), be equipped with: temperature control plate (10), it is provided with temperature discriminator circuit (2), oscillator (3), audible-visual annunciator (4), out-of-limit judging circuit (5), distributing electric power circuit (6); Circuit on temperature control plate (10) provides the power circuit (1) of power supply; Be used to connect the heating source interface (8) of heating source; Binding post (12), it links to each other with external power supply, also link to each other with distributing electric power circuit (6) on the temperature control plate (10), and link to each other with heating source interface (8), thereby provide power supply to heating source interface (8) according to the control of the temperature discriminator circuit (2) that links to each other with distributing electric power circuit (6) by lead.
9. temperature control protection according to claim 8 and off-limit alarm device; it is characterized in that; described power circuit (1) links to each other with temperature discriminator circuit (2) on the temperature control plate (10); temperature discriminator circuit (2) links to each other with oscillator (3); oscillator (3) links to each other with audible-visual annunciator (4); audible-visual annunciator (4) links to each other with out-of-limit judging circuit (5), and temperature discriminator circuit (2) also links to each other with distributing electric power circuit (6).
10. temperature control protection according to claim 8 and off-limit alarm device is characterized in that, the LED that is used to report to the police on out-of-limit judging circuit (5) and the audible-visual annunciator (4) 1, LED 2, the temperature controller (9) that links to each other with out-of-limit judging circuit (5) and in temperature discriminator circuit (2) as the triode G of sensor (11) usefulness 1All be arranged on the panel of housing (7).
CN 200420085438 2004-11-22 2004-11-22 Temp.-control protection and over-limit alarming circuit and apparatus thereof Expired - Fee Related CN2771735Y (en)

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Application Number Priority Date Filing Date Title
CN 200420085438 CN2771735Y (en) 2004-11-22 2004-11-22 Temp.-control protection and over-limit alarming circuit and apparatus thereof

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Application Number Priority Date Filing Date Title
CN 200420085438 CN2771735Y (en) 2004-11-22 2004-11-22 Temp.-control protection and over-limit alarming circuit and apparatus thereof

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CN2771735Y true CN2771735Y (en) 2006-04-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101721138B (en) * 2008-10-15 2013-01-02 优格斯特/弗里斯马格股份公司 Electric beverage making machine comprising control unit
CN112731986A (en) * 2021-01-08 2021-04-30 肖峰 Medical equipment temperature abnormity alarm circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101721138B (en) * 2008-10-15 2013-01-02 优格斯特/弗里斯马格股份公司 Electric beverage making machine comprising control unit
CN112731986A (en) * 2021-01-08 2021-04-30 肖峰 Medical equipment temperature abnormity alarm circuit

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