CN2116240U - Multipurpose electronic temp self-control instrument - Google Patents
Multipurpose electronic temp self-control instrument Download PDFInfo
- Publication number
- CN2116240U CN2116240U CN 92212197 CN92212197U CN2116240U CN 2116240 U CN2116240 U CN 2116240U CN 92212197 CN92212197 CN 92212197 CN 92212197 U CN92212197 U CN 92212197U CN 2116240 U CN2116240 U CN 2116240U
- Authority
- CN
- China
- Prior art keywords
- circuit
- tie point
- connects
- power supply
- mounting box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Control Of Temperature (AREA)
Abstract
The utility model discloses a multipurpose electronic temperature self-control instrument, comprising a power supply main loop, a DC power supply circuit, a sensing circuit, a comparison circuit, an amplification circuit and a mounting box. An operation selecting switch and a temperature controlling adjusting knob are arranged at relevant positions according to requirements of limitations of maximum or minimum temperatures and constant temperatures. Thus, the constant temperatures control of the load connected to an output socket. The structure is simple, and the sensitivity is high. The multipurpose electronic temperature self-control instrument can be widely used for automatically regulating the temperature control of an electric fan, rice accelerating germination, poultry hatching, spawn culture and medical temperature controlling apparatus. The multipurpose electronic temperature self-control instrument is economical and practical.
Description
The utility model provides a kind of multipurpose electronic temperature-controlled instrument.
Now Chang Yong temperature controller is a temperature-sensing element for adopting bimetallic strip or thermopair, electromagnetic relay is the mechanical structure of control element, because of it has contact and mechanical motion, produce electric spark, serviceable life is short, recently, occurred again in the prior art with the electronic type structure of controllable silicon as control element, " a kind of radiator valve " (88208171.3) as the Chinese patent bulletin, " family expenses low energy consumption temperature control equipment " (90215069.3), though it is low that they have energy consumption, the characteristics of long service life, circuit structure complexity, and only have the simple function of the highest or minimum temperature of restriction, the scope of application is little.
The purpose of this utility model is for overcoming above-mentioned weak point, and a kind of simple in structure, highly sensitive, multipurpose electronic temperature-controlled instrument of being widely used, can limiting the highest or minimum temperature is provided.
Multipurpose electronic temperature-controlled instrument of the present utility model is made up of main circuit power supply, DC power supply circuit, sensing circuit, comparator circuit, amplifying circuit and mounting box.
Accompanying drawing 1 is the utility model structural drawing;
Accompanying drawing 2 is the utility model circuit diagram;
Accompanying drawing 3 is a printed circuit board (PCB).
Now with accompanying drawing the utility model is made detailed description in conjunction with the embodiments.
In the main circuit power supply, alternating current 220V is from putting 1,2 inputs, point 1 serial connection power switch K
1, K
1The other end be output terminal 7, point 2 connects the negative electrode of controllable silicon SCR, silicon controlled anode 3 is the other end of output, SCR selects BT136 for use.
DC power supply circuit comprises step-down transformer B, commutation diode D, filter capacitor C
1, C
2The elementary ac input end 1,2 that is connected to of B, the secondary end tie point 2 of B, the other end connect the positive pole of D, the negative pole of D, C
1Positive pole, C
2An end be connected to a little 4, C
1Negative pole, C
2The other end be connected to a little 2.Wherein the secondary voltage of B is 9V, and D selects 1N4001 * 4, C for use
1=220uf/25V, C
2Be 1H104J.
Sensing circuit is by resistance R
2, single-pole double-throw (SPDT) working selecting switch K
2With thermistor R
+ t, R
- tForm.R
2Two ends respectively tie point 4 and K
2Fixed contact, R
+ t, R
- tAn end and contact 2, their other end connects K respectively
2Two movable contacts.R wherein
2=6,8K Ω, R
+ t, R
- tBe respectively the positive and negative temperature coefficient thermistor.
Comparator circuit is by resistance R
1, potentiometer W and operational amplifier IC form.R
1An end tie point 4, R
1The other end connect the stiff end of W, the movable end of W and another stiff end and contact 2, R
1In-phase input end with W one stiff end tie point concatenation operation amplifier IC
, the inverting input of operational amplifier IC
Connect R
2And K
2The tie point of fixed contact.R wherein
1=6.8K Ω, W=10K Ω.
Amplifying circuit is by resistance R
3, R
4, R
5, R
6, voltage stabilizing diode DW and transistor BG form.R
3An end tie point 4, R
3The output terminal of negative pole, operational amplifier IC of the other end, DW be connected to a little 5, the positive pole of DW connects R
4One end, R
4The other end, R
5The base stage of an end, BG be connected to a little 6, R
5Other end tie point 2, the collector of BG connects R
6An end, R
6Other end tie point 4, the emitter of BG connects the control utmost point of controllable silicon SCR.R wherein
3=4.3K Ω, R
4=4.7K Ω, R
5=7.5 Ω, R
6=510 Ω, DW is 2CW50, BG selects CD9014 for use.
The temperature regulating and controlling turn-knob that is enclosed within on the potentiometer W handle is installed on the mounting box panel, is printed on the thermostat temperature scale, power switch K on corresponding its panel
1With working selecting switch K
2Mounting box one side is equipped with the accessory power outlet that connects output terminal 7,3, thermistor R
+ t, R
- tMount pad, and draw the interchange input plug.
Each electronic component is fixed on printed circuit board (PCB), transformer B and controllable silicon SCR on the mounting box base after pressing and welding well shown in the accompanying drawing 3, with bolt loam cake is fixed again.
During use, the highest or minimum temperature, thermostat temperature are respectively with working selecting switch K according to required restriction
2Place the relevant position with temperature regulating and controlling turn-knob, can carry out thermostatic control the load that is connected on the accessory power outlet.
The utility model is owing to adopt above design, simple in structure, highly sensitive, realize the thermostatic control of or minimum temperature the highest to load limitations, be widely used in electric fan temperature control self-regulated, seed rice vernalization, poultry hatching, bacterial classification cultivation, medical temperature regulating device and industrial thermostatic equipment, economical and practical.
Claims (1)
1, a kind of multipurpose electronic temperature-controlled instrument is characterized in that it is made up of main circuit power supply, DC power supply circuit, sensing circuit, comparator circuit, amplifying circuit and mounting box, and in the main circuit power supply, alternating current 220V is from putting 1,2 inputs, point 1 serial connection power switch K
1, K
1The other end be output terminal 7, point 2 connects the negative electrode of controllable silicon SCR, controllable silicon anode 3 is the other end of output, DC power supply circuit comprises step-down transformer B, commutation diode D, filter capacitor C
1, C
2, the elementary ac input end 1,2 that is connected to of B, the secondary end tie point 2 of B, the other end connect the positive pole of D, the negative pole of D, C
1Positive pole, C
2An end be connected to a little 4, C
1Negative pole, C
2The other end be connected to a little 2, sensing circuit is by resistance R
2, single-pole double-throw (SPDT) working selecting switch K
2With thermistor R
+ t, R
- tForm R
2Two ends respectively tie point 4 and K
2Fixed contact, R
+ t, R
- tAn end and contact 2, their other end connects K respectively
2Two movable contacts, comparator circuit is by resistance R
1, potentiometer W and operational amplifier IC form R
1An end tie point 4, R
1The other end connect the stiff end of W, the movable end of W and another stiff end and contact 2, R
1In-phase input end with W one stiff end tie point concatenation operation amplifier IC
, the inverting input of operational amplifier IC
Connect R
2And K
2The tie point of fixed contact, amplifying circuit is by resistance R
3, R
4, R
5, R
6, voltage stabilizing diode DW and transistor BG form, R
3An end tie point 4, R
3The output terminal of negative pole, operational amplifier IC of the other end, DW be connected to a little 5, the positive pole of DW connects R
4An end, R
4The other end, R
5The base stage of an end, BG be connected to a little 6, R
5Other end tie point 2, the collector of BG connects R
6An end, R
6Other end tie point 4, the emitter of BG connects the control utmost point of controllable silicon SCR, and the temperature regulating and controlling turn-knob that is enclosed within on the potentiometer W handle is installed on the mounting box panel, is printed on the thermostat temperature scale, power switch K on corresponding its panel
1With working selecting switch K
2, mounting box one side is equipped with the accessory power outlet that connects output terminal 7,3, thermistor R
+ t, R
- tMount pad, and draw the interchange input plug, after each electronic component welds, printed circuit board (PCB), transformer B and controllable silicon SCR are fixed on the mounting box base, with bolt loam cake is fixed again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212197 CN2116240U (en) | 1992-01-29 | 1992-01-29 | Multipurpose electronic temp self-control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212197 CN2116240U (en) | 1992-01-29 | 1992-01-29 | Multipurpose electronic temp self-control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2116240U true CN2116240U (en) | 1992-09-16 |
Family
ID=4957118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92212197 Pending CN2116240U (en) | 1992-01-29 | 1992-01-29 | Multipurpose electronic temp self-control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2116240U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130439A (en) * | 2011-03-16 | 2011-07-20 | 天津市鸿远电气设备有限公司 | Leakage protection switch with virtual connection preventing function |
| CN102157913A (en) * | 2011-03-16 | 2011-08-17 | 天津市鸿远电气设备有限公司 | Overvoltage protection switch with function of preventing virtual connection |
| CN104216435A (en) * | 2013-05-31 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Control circuit |
-
1992
- 1992-01-29 CN CN 92212197 patent/CN2116240U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130439A (en) * | 2011-03-16 | 2011-07-20 | 天津市鸿远电气设备有限公司 | Leakage protection switch with virtual connection preventing function |
| CN102157913A (en) * | 2011-03-16 | 2011-08-17 | 天津市鸿远电气设备有限公司 | Overvoltage protection switch with function of preventing virtual connection |
| CN104216435A (en) * | 2013-05-31 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |