CN205579954U - Electric water heater magnesium stick consumes warning device - Google Patents
Electric water heater magnesium stick consumes warning device Download PDFInfo
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- CN205579954U CN205579954U CN201620338163.5U CN201620338163U CN205579954U CN 205579954 U CN205579954 U CN 205579954U CN 201620338163 U CN201620338163 U CN 201620338163U CN 205579954 U CN205579954 U CN 205579954U
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Abstract
The utility model provides an electric water heater magnesium stick consumes warning device, magnesium stick consumption alert circuit is by signal input part, constant current source part, signal processor branch and press frequency conversion portion to constitute. Emitter follower of group's constitution is put to LM324 chip A1 fortune, A1, A4 have constituteed a low temperature drift amplifier. Resistance R3, R4, R5, R6, R7 constitute bias circuit and overcome off -set voltage and electric current. A2, R9, Q1, D1, C7 constitute a constant current source provides invariable charging current for C7. A1 and Q2, T1, R2 constitute voltage -current transducer, and it alternaties incoming signal become rather than proportional C7 discharge current, incoming signal's amplitude is big, and then Q2's conduction can be good, and it is fast that the last electric charge of C7 is put. During C1 charged, 555 chips, 3 feet were the high level, and Q2 ends, and then pilot lamp LED2 is bright. It is higher than at 23 o'clock to charge through R15 as C5, and 555 chips reset, and the stable state finishes temporarily.
Description
Technical field
This utility model relates to electric heater, particularly relates to a kind of electric heater magnesium rod consumption alarm device.
Background technology
Magnesium rod is one critical elements of inner container of electric water heater antiseptical.In recent years, due to acidity and the increase of corrosive ions of water quality, the corrosivity of water in water heater is made to strengthen.In addition, China is vast in territory, and the corrosivity of various places water quality also exists difference, the not equal reason of the temporal frequency that various places user uses, and makes magnesium rod at actual useful year.Magnesium rod consumption alarm device is to realize more satisfactory and economic solution in 10 years inner bag service life.Currently, the manufacturer of some domestic water heaters, if in the after-sale service held, also contains the replacing of magnesium rod, but at present domestic user to this cognition degree not enough, lacks initiative, causes and occur inner bag corrosion failure owing to magnesium anode runs out of.Magnesium rod consumption alarm device is a kind of instruction device to magnesium rod consumption, the duty of real time automatic detection magnesium rod, and losing efficacy once magnesium rod just carries out warning and remind even alarm, reminds user to change magnesium rod, it is ensured that inner bag the most protected.
The design people's once a kind of magnesium rod consumption alarm device of water heater (CN200620106977.2), including housing, at housing built with wiring board, arranges magnesium rod on this wiring board and consumes warning circuit, and this electricity routing integrated block U7 is constituted.It utilizes potential difference when constituting loop between magnesium rod and inner bag, is detected by foregoing circuit, amplifies and carry out driven for emitting lights element, and light emitting diode is as display lamp.If magnesium rod does not the most corrode is depleted to setting value, it indicates that lamp is bright；If magnesium rod corrosion consume less than setting value (this value is adjustable, it is also possible to be adjusted to magnesium rod run out of completely warn again), it indicates that lamp does not works.Now should change magnesium rod.
Utility model content
The purpose of this utility model is to provide a kind of electric heater magnesium rod consumption alarm device, and it is third generation magnesium rod consumption alarm device.In the principle combining above two generation device advantages, have modified anti-jamming circuit, have adjusted sampling precision, thus more effectively solve magnesium rod in actual applications, the error interference caused along with the change changing aqueous medium of coolant-temperature gage.
nullFor reaching above-mentioned purpose，The solution that this utility model is taked is: a kind of electric heater magnesium rod consumption alarm device，It includes that magnesium rod consumes warning circuit，This circuit is made up of LM324 chip U1 and 555 chip U2，1 foot of chip U1 connects audion Q2 base stage and electric capacity C1 one end，2 feet connect 13 feet and 14 feet，3 feet connect electric capacity C3 one end、Resistance R2 one end and resistance R5 one end，4 feet connect VCC end，5 feet connect audion Q1 emitter stage and resistance R9 one end，6 feet connect 5 feet and electric capacity C6 one end of chip U2，7 feet connect audion Q1 base stage and electric capacity C2 one end，12 feet connect audion Q2 emitter stage、Resistance R11 one end and resistance R7 one end，Resistance R5 other end connecting resistance R4 one end and resistance R6 one end，Another termination capacitor C4 one end of resistance R7、Resistance R3 one end and the resistance R4 other end，2 feet of chip U2 connect electric capacity C7 one end、Audion Q2 colelctor electrode、Diode D1 negative electrode，3 foot connecting resistance R14 one end、Resistance R13 one end and green light LED1 negative electrode，6 feet connect 7 feet、Electric capacity C5 one end and resistance 15 one end，Another termination red light LED2 anode of resistance R13，Resistance R2 another termination changer T1 exports one end，Audion Q1 colelctor electrode connects diode D1 anode and diode D2 anode，The diode D2 negative electrode connecting resistance R14 other end.
This circuit is made up of main four parts；First: stimulus part；Second: constant-current source part；3rd: signal processing；4th: voltage-frequency conversion portion.Stimulus part: this part is formed an emitter follower by LM324 chip A1 amplifier group；Prevent high-frequency signal from affecting input signal in turn；A4 amplifier group, for reducing the temperature drift of A1, is constituted a low temperature shift amplifier by A1, A4.Resistance R3, R4, R5, R6, R7 composition biasing circuit overcomes offset voltage and electric current.Constant-current source part: this part is formed a constant-current source by A2, R9, Q1, D1, C7 provides constant charging current for C7.Signal processing: A1 Yu Q2, T1, R2 form voltage current transducer, and it transforms input signal to the C7 discharge current being proportional to；The amplitude of input signal is big, then the conduction property of Q2 is good, and it is fast that the electric charge on C7 is put.Voltage-frequency conversion portion: during C1 charges, 555 chip 3 feet are high level, Q2 ends, it indicates that lamp LED2 is bright.When C5 is higher than 2/3 by R15 charging, 555 chip resets, temporary stable state terminates.
This circuit coordinates magnesium sacrificial anode (magnesium rod) to be suitable for and electric heater, detects magnesium rod Expenditure Levels, makes and whether reporting to the police, thus protect water heater liner.It is third generation magnesium rod consumption alarm device.In the principle combining above two generation device advantages, have modified anti-jamming circuit, have adjusted sampling precision, thus more effectively solve magnesium rod in actual applications, the error interference caused along with the change changing aqueous medium of coolant-temperature gage.
Accompanying drawing explanation
Fig. 1 is the electrical connection diagram of the present embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, this utility model is described again.
nullSee Fig. 1，A kind of electric heater magnesium rod consumption alarm device，It includes that magnesium rod consumes warning circuit，This circuit is made up of LM324 chip U1 and 555 chip U2，1 foot of chip U1 connects audion Q2 base stage and electric capacity C1 one end，2 feet connect 13 feet and 14 feet，3 feet connect electric capacity C3 one end、Resistance R2 one end and resistance R5 one end，4 feet connect VCC end，5 feet connect audion Q1 emitter stage and resistance R9 one end，6 feet connect 5 feet and electric capacity C6 one end of chip U2，7 feet connect audion Q1 base stage and electric capacity C2 one end，12 feet connect audion Q2 emitter stage、Resistance R11 one end and resistance R7 one end，Resistance R5 other end connecting resistance R4 one end and resistance R6 one end，Another termination capacitor C4 one end of resistance R7、Resistance R3 one end and the resistance R4 other end，2 feet of chip U2 connect electric capacity C7 one end、Audion Q2 colelctor electrode、Diode D1 negative electrode，3 foot connecting resistance R14 one end、Resistance R13 one end and green light LED1 negative electrode，6 feet connect 7 feet、Electric capacity C5 one end and resistance 15 one end，Another termination red light LED2 anode of resistance R13，Resistance R2 another termination changer T1 exports one end，Audion Q1 colelctor electrode connects diode D1 anode and diode D2 anode，The diode D2 negative electrode connecting resistance R14 other end.
See Fig. 1, described changer T1 input and resistance R1 and connect magnesium rod holding wire.
See Fig. 1, the described electric capacity C1 other end connects power supply GND end by resistance R10, the resistance R11 other end, the electric capacity C7 other end, the electric capacity C6 other end, the electric capacity C5 other end, the electric capacity C4 other end, the electric capacity C3 other end, the resistance R6 other end, the changer T1 output other end, red light LED2 negative electrode, 11 feet of chip U1,1 foot of chip U2 connect power supply GND end, the electric capacity C2 other end connects power supply VCC outfan, the resistance R15 other end, 4 feet of chip U2 and 8 feet, resistance R3 another termination power VCC outfan by resistance R8 and green light LED1 anode by resistance R12.
Seeing Fig. 1, described power supply VCC and export termination capacitor C9 one end, electric capacity C8 anode, inductance L1 outfan, inductance L1 inputs termination power VCC input, and the electric capacity C9 other end, electric capacity C8 bear termination power GND end.
Seeing Fig. 1, the magnesium rod holding wire+pole of this kind of electric heater magnesium rod consumption alarm device connects magnesium rod, and-pole connects water heater liner and just can employ.
Seeing Fig. 1, the magnesium rod holding wire+pole of this kind of electric heater magnesium rod consumption alarm device connects magnesium rod, and-pole connects water heater liner and just can employ.
Claims (4)
1. an electric heater magnesium rod consumption alarm device, it include magnesium rod consume warning circuit, it is characterized in that: this circuit by
LM324 chip U1 and 555 chip U2 are constituted, and 1 foot of chip U1 connects audion Q2 base stage and electric capacity C1 one end, and 2
Foot connects 13 feet and 14 feet, and 3 feet connect electric capacity C3 one end, resistance R2 one end and resistance R5 one end, and 4 feet connect VCC end, and 5
Foot connects audion Q1 emitter stage and resistance R9 one end, and 6 feet connect 5 feet and electric capacity C6 one end of chip U2, and 7 feet connect audion
Q1 base stage and electric capacity C2 one end, 12 feet meet audion Q2 emitter stage, resistance R11 one end and resistance R7 one end, resistance R5
Other end connecting resistance R4 one end and resistance R6 one end, another termination capacitor C4 one end of resistance R7, resistance R3 one end and resistance
The R4 other end, 2 feet of chip U2 connect electric capacity C7 one end, audion Q2 colelctor electrode, diode D1 negative electrode, and 3 feet connect electricity
Resistance R14 one end, resistance R13 one end and green light LED1 negative electrode, 6 feet connect 7 feet, electric capacity C5 one end and resistance 15 one end,
Another termination red light LED2 anode of resistance R13, resistance R2 another termination changer T1 exports one end, audion Q1 current collection
Pole connects diode D1 anode and diode D2 anode, the diode D2 negative electrode connecting resistance R14 other end.
A kind of electric heater magnesium rod consumption alarm device the most according to claim 1, is characterized in that: described changer T1
Input and resistance R1 also connect magnesium rod holding wire.
A kind of electric heater magnesium rod consumption alarm device the most according to claim 1, is characterized in that: described electric capacity C1
The other end connects power supply GND end by resistance R10, the resistance R11 other end, the electric capacity C7 other end, the electric capacity C6 other end,
The electric capacity C5 other end, the electric capacity C4 other end, the electric capacity C3 other end, the resistance R6 other end, the changer T1 output other end,
Red light LED2 negative electrode, 11 feet of chip U1,1 foot of chip U2 connect power supply GND end, and the electric capacity C2 other end is by electricity
Resistance R8 and green light LED1 anode connect power supply VCC outfan by resistance R12, the resistance R15 other end, the 4 of chip U2
Foot and 8 feet, resistance R3 another termination power VCC outfan.
A kind of electric heater magnesium rod consumption alarm device the most according to claim 3, is characterized in that: described power supply VCC
Output termination capacitor C9 one end, electric capacity C8 anode, inductance L1 outfan, inductance L1 inputs termination power VCC input,
The electric capacity C9 other end, electric capacity C8 bear termination power GND end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338163.5U CN205579954U (en) | 2016-04-11 | 2016-04-11 | Electric water heater magnesium stick consumes warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620338163.5U CN205579954U (en) | 2016-04-11 | 2016-04-11 | Electric water heater magnesium stick consumes warning device |
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| Publication Number | Publication Date |
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| CN205579954U true CN205579954U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620338163.5U Active CN205579954U (en) | 2016-04-11 | 2016-04-11 | Electric water heater magnesium stick consumes warning device |
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| CN (1) | CN205579954U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218087A (en) * | 2021-05-25 | 2021-08-06 | 珠海格力电器股份有限公司 | Electrical equipment protection stick consumption monitoring device and electrical equipment |
-
2016
- 2016-04-11 CN CN201620338163.5U patent/CN205579954U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218087A (en) * | 2021-05-25 | 2021-08-06 | 珠海格力电器股份有限公司 | Electrical equipment protection stick consumption monitoring device and electrical equipment |
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