CN204557250U - A kind of electric distribution box Automatic Temperature Control - Google Patents
A kind of electric distribution box Automatic Temperature Control Download PDFInfo
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- CN204557250U CN204557250U CN201520295151.4U CN201520295151U CN204557250U CN 204557250 U CN204557250 U CN 204557250U CN 201520295151 U CN201520295151 U CN 201520295151U CN 204557250 U CN204557250 U CN 204557250U
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- circuit
- resistance
- distribution box
- temperature
- signal amplification
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Abstract
The utility model discloses a kind of electric distribution box Automatic Temperature Control, comprise power circuit, temperature sensing circuit, signal amplification circuit and output control circuit, the signal input part of temperature sensing circuit is connected with the signal input part of signal amplification circuit, the signal output part of signal amplification circuit is connected with the signal input part of output control circuit, and the control output end of output control circuit is connected with the control end of radiator fan motor.The utility model is by the temperature in electronic devices and components induction panel box, automatically radiator fan work is controlled according to the change of temperature, thus make the temperature in panel box maintain in normal range, guarantee panel box runs well, improve the serviceable life of components and parts in panel box, reduce the generation of fault, there is the value applied.
Description
Technical field
The utility model relates to a kind of electric control circuit, particularly relates to a kind of electric distribution box Automatic Temperature Control.
Background technology
Panel box is the magnanimity parameter in data, is generally to form low pressure woods by electrical wiring, requires switchgear, measurement instrument, protective device and utility appliance to be assembled in close or in semiclosed metal safe or on screen width, form low-tension distribution box.Can connect or point deenergizing by manual or automatic switch during normal operation.But electric distribution box of the prior art is all closed space, if be provided with the components and parts of the heating such as circuit board or transformer in electric distribution box, distribution the temperature inside the box will be caused unstable, easily cause the phenomenon that temperature is too high, thus cause the problem damaging components and parts or fault, therefore, there is room for improvement.
Utility model content
The purpose of this utility model is just to provide a kind of electric distribution box Automatic Temperature Control to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises power circuit, temperature sensing circuit, signal amplification circuit and output control circuit, described power circuit is the power circuit that two-way exports, one tunnel of described power circuit exports and is connected with the power input of described signal amplification circuit and described output control circuit simultaneously, another road of described power circuit exports and is connected with the power input of described temperature sensing circuit, the signal input part of described temperature sensing circuit is connected with the signal input part of described signal amplification circuit, the signal output part of described signal amplification circuit is connected with the signal input part of described output control circuit, the control output end of described output control circuit is connected with the control end of radiator fan motor.
Particularly, described power circuit is made up of dual output transformer, the first resistance, the second resistance, the second electric capacity, the 4th electric capacity, the first stabilivolt, the second stabilivolt, the first rectifier and voltage stabilizing chip; Described temperature sensing circuit is made up of the first potentiometer, the 3rd resistance, the 4th resistance, the first electric capacity, the 3rd electric capacity, the second rectifier, reometer and thermistor; Described signal amplification circuit is made up of to the 9th resistance and integrated amplification chip the second potentiometer, the 5th resistance; Described output control circuit is made up of relay, the first diode, the second diode, light emitting diode and triode.
The beneficial effects of the utility model are:
The utility model is a kind of electric distribution box Automatic Temperature Control, compared with prior art, the utility model is by the temperature in electronic devices and components induction panel box, automatically radiator fan work is controlled according to the change of temperature, thus make the temperature in panel box maintain in normal range, ensure that panel box runs well, improve the serviceable life of components and parts in panel box, reduce the generation of fault, there is the value applied.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises power circuit 1, temperature sensing circuit 2, signal amplification circuit 3 and output control circuit 4, the power circuit that power circuit 1 exports for two-way, one tunnel of power circuit 1 exports and is connected with the power input of signal amplification circuit 3 and output control circuit 4 simultaneously, another road of power circuit 1 exports and is connected with the power input of temperature sensing circuit 2, the signal input part of temperature sensing circuit 2 is connected with the signal input part of signal amplification circuit 3, the signal output part of signal amplification circuit 3 is connected with the signal input part of output control circuit 4, the control output end of output control circuit 4 is connected with the control end of radiator fan motor 5.
Particularly, power circuit 1 is made up of dual output transformer T, the first resistance R1, the second resistance R2, the second electric capacity C2, the 4th electric capacity C4, the first stabilivolt VS1, the second stabilivolt VS2, the first rectifier DR1 and voltage stabilizing chip IC 1; Temperature sensing circuit 2 is made up of the first potentiometer RP1, the 3rd resistance R3, the 4th resistance R4, the first electric capacity C1, the 3rd electric capacity C3, the second rectifier DR2, reometer PA and thermistor KS; Signal amplification circuit 3 is made up of to the 9th resistance R9 and integrated amplification chip IC2 the second potentiometer RP2, the 5th resistance R5; Output control circuit 4 is made up of relay K, the first diode VD1, the second diode VD2, LED and triode VT.
Alternating current 220V voltage is after dual output transformer T step-down, the first rectifier UR1 rectification, the first electric capacity C1 filtering and voltage stabilizing chip IC 1 voltage stabilizing, produce+12V voltage supplying temperature testing circuit 2, another road becomes flat roof type alternating voltage through dual output transformer T step-down, the first resistance R1 and the second resistance R2 current limliting and the first stabilivolt VS1, the second stabilivolt VS2 voltage stabilizing, filtering.This alternating voltage adjusts sampling, thermistor KS step-down and the second rectifier UR2 rectification through the first potentiometer RP1 and becomes DC voltage, then after crossing current limliting by the 3rd electric capacity C3, the 3rd resistance R3 and the first electric capacity C1 filter, adds on reometer PA.Thermistor KS resistance changes along with the change of temperature.Environment temperature is higher, and the resistance of thermistor KS is less, and the DC current flowing through reometer PA is larger.When temperature is lower, the electric current flowing through thermistor KS is also less, the voltage that integrated amplification chip IC2 is stranded inverting input exports high level lower than the reference voltage of normal phase input end, make triode VT conducting. relay K adhesive, its normally opened contact is connected, and makes the motor M energising work in radiator fan motor 5.Along with continuing to increase of distribution the temperature inside the box, the resistance of thermistor KS also starts to increase gradually, and the voltage of integrated amplification chip IC2 inverting input also constantly rises.When temperature be reduced to setting humidity time, integrated amplification chip IC2 because of anti-phase input terminal voltage higher than its normal phase input end voltage output low level, triode VT end, relay K release, the working power of motor M is cut off by its normally opened contact K1.So work repeatedly, distribution the temperature inside the box can be made to control in the temperature range of setting.
Component parameter of the present utility model is selected as follows:
First resistance R1 is 100 Ω, second resistance R2 is 400 Ω, 3rd resistance R3 is 500 Ω, 4th resistance R4 is 2k Ω, 5th resistance R5 is 27k Ω, 6th resistance R6 is 200 Ω to the 8th resistance R8, 9th resistance R9 is 479 Ω, first electric capacity C1 is 300uf, second electric capacity C2 is 470uf, 3rd electric capacity C3 is 100uf, 4th electric capacity C4 is 1000uf, first stabilivolt VS1 and the second stabilivolt VS2 is the stabilivolt of model 2CW1, dual output transformer T is 12V and 6V dual output transformer, first rectifier DR1 and the second rectifier DR2 is the bridge rectifier of model GBPC2508, voltage stabilizing chip IC 1 is the voltage stabilizing chip of model LM7812, integrated amplification chip IC2 is the amplification chip of model UA741, first potentiometer RP1 is 47 kilo-ohms, second potentiometer RP2 is 5.1 kilo-ohms, triode VT is PNP type triode.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. an electric distribution box Automatic Temperature Control, it is characterized in that: comprise power circuit, temperature sensing circuit, signal amplification circuit and output control circuit, described power circuit is the power circuit that two-way exports, one tunnel of described power circuit exports and is connected with the power input of described signal amplification circuit and described output control circuit simultaneously, another road of described power circuit exports and is connected with the power input of described temperature sensing circuit, the signal input part of described temperature sensing circuit is connected with the signal input part of described signal amplification circuit, the signal output part of described signal amplification circuit is connected with the signal input part of described output control circuit, the control output end of described output control circuit is connected with the control end of radiator fan motor.
2. electric distribution box Automatic Temperature Control according to claim 1, is characterized in that: described power circuit is made up of dual output transformer, the first resistance, the second resistance, the second electric capacity, the 4th electric capacity, the first stabilivolt, the second stabilivolt, the first rectifier and voltage stabilizing chip.
3. electric distribution box Automatic Temperature Control according to claim 1, is characterized in that: described temperature sensing circuit is made up of the first potentiometer, the 3rd resistance, the 4th resistance, the first electric capacity, the 3rd electric capacity, the second rectifier, reometer and thermistor.
4. electric distribution box Automatic Temperature Control according to claim 1, is characterized in that: described signal amplification circuit is made up of to the 9th resistance and integrated amplification chip the second potentiometer, the 5th resistance.
5. electric distribution box Automatic Temperature Control according to claim 1, is characterized in that: described output control circuit is made up of relay, the first diode, the second diode, light emitting diode and triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295151.4U CN204557250U (en) | 2015-05-08 | 2015-05-08 | A kind of electric distribution box Automatic Temperature Control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520295151.4U CN204557250U (en) | 2015-05-08 | 2015-05-08 | A kind of electric distribution box Automatic Temperature Control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204557250U true CN204557250U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520295151.4U Expired - Fee Related CN204557250U (en) | 2015-05-08 | 2015-05-08 | A kind of electric distribution box Automatic Temperature Control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204557250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779027A (en) * | 2022-05-18 | 2022-07-22 | 四川大学 | PDIV testing device and method capable of achieving intelligent temperature rise |
-
2015
- 2015-05-08 CN CN201520295151.4U patent/CN204557250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779027A (en) * | 2022-05-18 | 2022-07-22 | 四川大学 | PDIV testing device and method capable of achieving intelligent temperature rise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |