CN201879496U - Anti-leakage controller for drinking water machine - Google Patents
Anti-leakage controller for drinking water machine Download PDFInfo
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- CN201879496U CN201879496U CN2010202016497U CN201020201649U CN201879496U CN 201879496 U CN201879496 U CN 201879496U CN 2010202016497 U CN2010202016497 U CN 2010202016497U CN 201020201649 U CN201020201649 U CN 201020201649U CN 201879496 U CN201879496 U CN 201879496U
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- drinking water
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Abstract
The utility model provides an anti-leakage controller for a drinking water machine, comprising a water leakage sensing circuit, an installation box, a load circuit and an external alarm circuit, wherein the water leakage sensing circuit is arranged in a water receiving disc at the bottom of the drinking water machine and consists of a front electrode and a rear electrode; a circuit board arranged in the installation box consists of a voltage-reducing circuit, a direct-current power circuit, a signal obtaining circuit, a first comparison circuit, an execution circuit, a second comparison circuit, an internal alarm and direct-current balanced circuit. When the drinking water machine does not leak water and no water exists in the water receiving disc, no signal current is input in the signal obtaining circuit, a control system conducts a power supply of a water inlet electromagnetic valve, the water inlet electromagnetic valve is started, and the drinking water machine is fed by water normally to work normally. When the drinking water machine leaks water, and the front electrode as well as the rear electrode is dipped in water, the control system cuts off the power supply of the water inlet electromagnetic valve, the water inlet electromagnetic valve is shut off, the water leakage accident of the drinking water machine is stopped, and simultaneously the alarm circuit gives an alarm by sound and light to inform of the water leakage of the drinking water machine.
Description
Technical field
The utility model relates to field of water fountain, relates in particular to a kind of drinking water machine leakage-proof controller.
Background technology
Water dispenser is the household electrical appliance of using always, the problem that commercially available water dispenser ubiquity is following: do not have leak-proof device, thereby in a single day water dispenser leak, may cause serious consequence.Particularly to being connected with tap water pipe line, being the water dispenser of water source, band water purifier with the running water, the consequence of leaking is serious especially.Mansion building, Pekinese damaged all incidents of high-grade redwood Family with regard to taking place downstairs because of this type of water dispenser upstairs leaks.In addition, because water dispenser is the very fierce commercial product of price competition, therefore water dispenser of the prior art presses for dependable performance, cheap leakproof controller.
Summary of the invention
The purpose of this utility model is the deficiency of Needles to prior art, and a kind of dependable performance, drinking water machine leakage-proof controller with low cost are provided.
The utility model realizes that the technical scheme of above-mentioned technical purpose is: a kind of drinking water machine leakage-proof controller comprises the sensing circuit that leaks, mounting box, load circuit and outer warning circuit.
The sensing circuit that leaks is installed in the bottom of water dispenser, and it is made up of a preceding electrode, a rear electrode.Preferably, described preceding electrode, rear electrode are arranged on the bottom of a drip tray mutually non-contiguously, and a slice insulation spacer is established in the rear electrode below.Described drip tray can compile the water that parts leaked of paddling such as the pipeline, smart seat, water tank, heater, water purifier of water dispenser.
Described drip tray can also can be used plastic production with metal, preferentially adopts plastic production.
A wiring board is installed in the mounting box, and this wiring board is made up of reduction voltage circuit, DC power supply circuit, signal acquisition circuit, first comparison circuit, executive circuit, second comparison circuit, interior warning and dc balance circuit.Wherein, signal acquisition circuit, first comparison circuit, executive circuit, second comparison circuit, interior warning and dc balance circuit forming control system.
Electrode is connected by the center line N of a step-down (current limliting) resistance with AC220V municipal administration alternating current before described; Described rear electrode is connected with the signal acquisition circuit of described wiring board.
Control procedure of the present utility model is:
When water dispenser water-tight, dry when anhydrous in the described drip tray, be open-circuit condition between the electrode, rear electrode before described, described signal acquisition circuit spacing current is imported.At this moment, described executive circuit is carried out the program of load power source with the load circuit connection, the water dispenser operate as normal of normally intaking.
Described load power source can be DC12V, DC24V, AC24V, AC36V, AC110V, AC220V etc., preferentially adopts AC220V.
Described load circuit can be that the control device (for example SCR, TRIAC or A.C. contactor) of water dispenser general supply also can be the entering water electromagnetic valve of water dispenser.For sake of convenience, be load circuit or load to call entering water electromagnetic valve in the following text.
When water dispenser leaks, when having water and preceding electrode and rear electrode all to be dipped into water in the described drip tray, between described preceding electrode, the rear electrode conducting state (through the water conducting in the dish).AC220V municipal administration alternating current is connected with described signal acquisition circuit by described step-down (current limliting) resistance, preceding electrode, rear electrode as testing source; The driving of tested person signal source AC220V municipal administration alternating current, signal code circulates between preceding electrode, rear electrode and imports in the described signal acquisition circuit.At this moment, subsequent conditioning circuit is carried out power supply that cuts off entering water electromagnetic valve and the program of connecting the warning circuit power supply, and entering water electromagnetic valve is closed, and the water dispenser leakage accident is checked; Simultaneously, interior warning and dc balance circuit and outer warning circuit get electric with sound, two kinds of forms warnings of light, and leakage accident has taken place the water dispenser of announcement.
The further technical measures of the utility model are:
1, is provided with " second comparison circuit " and " Inner reports to the police and the dc balance circuit ", in order to mounting box Inner " acoustic alarm of leaking " and the balance water dispenser DC load electric current that dc source is confessed in the operate as normal and two processes of protection of leaking.
2, reduction voltage circuit, DC power supply circuit are designed to the circuit multiplexer form that not only provides DC voltage but also constitute circulation path for signal code for control system.
Use the utility model, can obtain following beneficial effect:
1, just realizes the also automatic sound of entering water electromagnetic valve that meeting leaks closes water dispenser automatically, the function that light is reported to the police with simple circuit, extremely low cost, can effectively prevent the extension of water dispenser leakage accident.
2, owing to adopt AC220V municipal administration alternating current to make testing source, therefore, cost of the present utility model is further reduced, and, compare with interfering signal or conventional testing source, AC220V ten minutes is powerful, so the utility model anti-interference is good, reliability is high.
3, because described dc source protects two equal approximately equals of the load current in the process in the water dispenser operate as normal and the newspaper that leaks, so its good stability, reliability height.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model,
Fig. 2 is the circuit theory diagrams of the utility model embodiment,
Fig. 3 is the profile schematic diagram of mounting box 501 of the present utility model.
Among Fig. 1: 10 for reduction voltage circuit, 20 for DC power supply circuit, 90 for the sensing circuit that leaks, 100 for signal acquisition circuit, 101 be first comparison circuit, 102 for executive circuit, 103 be that second comparison circuit, 104 is reported to the police and dc balance circuit, 105 is that load circuit, 106 is that outer warning circuit, EL are that load power source, R13 are step-down (current limliting) resistance for Inner.
Among Fig. 2; E represents water dispenser, and P represents to place the drip tray of water dispenser bottom, and A represents to place preceding electrode, the B of drip tray P to represent that rear electrode, C represent to place the insulation spacer of B below, and Is represents signal code, I
DExpression DC load electric current, EL represents load power source, R
LExpression load (entering water electromagnetic valve or aforesaid SCR, TRIAC, A.C. contactor), 500 expressions that frame of broken lines goes out are installed in the wiring board among the mounting box 501, L, N, 1,2,3,4,5 represent the lead-out wire of mounting box 501 shown in Figure 3, wherein: L connects the phase line of AC220V, N connects the center line of AC220V, 1 connects the end of load power source EL, and 2 connect the LED of outer warning circuit, and 3 meet load R
LAn end, 4 connect preceding electrode A, 5 connect rear electrode.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
In conjunction with Fig. 1, Fig. 2: first resistance R
1, first capacitor C
1Formed reduction voltage circuit 10, and, described R
1, C
1After the parallel connection, the L line of a termination AC220V; The first diode D in the other end and the DC power supply circuit 20
1The negative pole and the second diode D
2Positive pole connect.
First to fourth diode D
1, D
2, D
3, D
4, second, third capacitor C
2, C
3, second resistance R
2, Zener diode DW has formed DC power supply circuit 20.Wherein, diode D
1, D
2, D
3, D
4Be bridge rectification device; C
2, C
3, R
2, DW is the filtering voltage regulation device.Their annexation is: the first diode D
1Negative pole, the second diode D
2Anodal all be connected with reduction voltage circuit; The 3rd diode D
3Negative pole, the 4th diode D
4Anodal all be connected with the N line of AC220V; The first, the 3rd diode D
1, D
3Positive pole (be DC voltage U all with circuit ground
CNegative pole) connect; The second, the 4th diode D
2, D
4Negative pole all with DC voltage U
CPositive pole connect; Second, third capacitor C
2, C
3One termination circuit ground, back in parallel, the other end (C
3Positive terminal) meet U
CPositive pole; The Zener diode DW and second resistance R
2After the series connection, the positive pole of a termination DC voltage Uc, the other end (positive terminal of DW) link ground.
AC220V is through R
1, C
1Step-down, D
1, D
2, D
3, D
4Rectification, C
2, C
3Filtering after the DW voltage stabilizing, is pressed U for control system provides galvanic current
C
The first triode V
1(9014), the 3rd, the 4th resistance R
3, R
4, the 5th diode D
5, relay J (comprising its break contact DD, moving together contact DH) formed executive circuit 102, and, the 5th diode D
5Negative pole, an end of relay J, the 3rd resistance R
3An end all connect the positive pole of dc source Uc; The 5th diode D
5Positive pole, relay J the other end all with the first triode V
1Colelctor electrode connect; The first triode V
1Emitter stage, the 4th resistance R
4The equal link of end ground; Three, the 4th resistance R
3, R
4The other end all with the first triode V
1Base stage connect; The break contact DD of relay J connects the 14 resistance R in the outer warning circuit 106
14, moving together contact DH connects load circuit 105.
Nine, the tenth resistance R
9, R
10, integrated transporting discharging IC-1 (1/2LM393) has formed first comparison circuit 101.And, the tenth resistance R
10The positive pole of a termination dc source Uc, in-phase input end 3 pin of the other end and integrated transporting discharging IC-1, inverting input 6 pin and the 9th resistance R of integrated transporting discharging IC-2
9Connect; The 9th resistance R
9The other end be connected with circuit ground; Output 1 pin of integrated transporting discharging IC-1 meets the first triode V
1Base stage.
Integrated transporting discharging IC-2 (1/2LM393) and peripheral components thereof have been formed second comparison circuit 103.
Five, the 6th, the 7th, the 8th resistance R
5, R
6, R
7, R
8, the second triode V
2(9014), buzzer HA has formed interior warning and dc balance circuit 104.And, the 5th resistance R
5With after buzzer HA connects again with the 6th resistance R
6Another termination of positive pole second triode V of a termination dc source Uc behind parallel connection, their series and parallels
2Colelctor electrode, the second triode V
2Emitter stage link ground, 7 pin, the 7th of base stage and integrated transporting discharging IC-2, the 8th resistance R
7, R
8An end separately connects, the 7th resistance R
7Other end link ground, the 8th resistance R
8The positive pole of another termination dc source Uc.
Preceding electrode A, rear electrode B, drip tray P have formed the sensing circuit 90 that leaks.For preventing the influence of condensation dew, below rear electrode B, be lined with insulating trip C.
The 11 to the 13 resistance R
11, R
12, R
13, the four or five capacitor C
4, C
5, the 6th diode D
6, piezo-resistance R
UFormed signal acquisition circuit 100.And, the 13 resistance R
13N line, another termination of a termination AC220V described before electrode A; The 6th diode D
6Positive pole connect described rear electrode B, negative pole and the 12 resistance R
12, the 4th, the 5th capacitor C
4, C
5, piezo-resistance R
UAll be connected; Four, the 5th capacitor C
4, C
5With piezo-resistance R
UAfter the parallel connection, an end and described the 6th diode D
6Negative pole connect the other end (C
5Negative pole end) link ground; The 11 resistance R
11One termination circuit ground, the other end and the 12 resistance R
12 Reach inverting input 2 pin of integrated transporting discharging IC-1, the in-phase input end 5 pin connection of integrated transporting discharging IC-2; The 12 resistance R
12The other end and described the 6th diode D
6Negative pole connect.
LED, the 14 resistance R
14Form outer warning circuit 106, and, LED, R
14After the series connection, a termination load power source EL, the break contact DD of the described relay J of another termination.
The control procedure of present embodiment is divided into the operate as normal and two processes of protection of leaking.
1, course of normal operation: water dispenser E is water-tight, among the drip tray P when anhydrous, between preceding electrode A, the rear electrode B is open-circuit condition, at this moment, the signal voltage U on in-phase input end 5 pin of inverting input 2 pin of signal code Is=0, integrated transporting discharging IC-1 and integrated transporting discharging IC-2
2=0, therefore, 1 pin of integrated transporting discharging IC-1 output high level, the first triode V
1Conducting, its emitter current are I
1, relay J gets that electronic work, its moving together contact DH closure, load magnetic valve must be established by cable and open, the water dispenser operate as normal.
In this course of normal operation, the reference voltage U on integrated transporting discharging IC-2 inverting input 6 pin
3(DC voltage Uc is through the 9th, the tenth resistance R
9, R
10Obtain after the dividing potential drop) greater than the signal voltage U on its in-phase input end 5 pin
2, therefore, the output 7 pin output low levels of IC-2, the second triode V
2End its emitter current I
2=0, buzzer HA does not work, at this moment, and the DC load electric current I that dc source Uc confesses
DBe approximately the first triode V
1Emitter current I
1(the one the second comparison circuit and the R slightly
3, R
4, R
7, R
8The shunt influence of the DC load electric current that Uc is confessed).
2, the protection process of leaking: when water dispenser leaks, ponding among the drip tray P be dipped into described before when electrode A and rear electrode B, at the negative half period of AC220V, signal code Is is logical by following path flow:
N line → R of AC220V
13Ponding in (step-down and current limliting) → preceding electrode A → drip tray → rear electrode B → the 6th diode D
6(rectification) → C
4With C
5(filtering) → R
12→ R
11→ circuit ground → D
1→ R
1With C
1The L line of (step-down) → AC220V.
From the circulation path of signal code Is as can be known: device first resistance R reduction voltage circuit 10, the DC power supply circuit 20
1, first capacitor C
1, the first diode D
1Played and both be the DC load electric current I
DThe double action of circulation path is provided for signal code Is again.In the utility model, claim that this technology is " circuit multiplexer " technology.
Because the circulation of Is is in the 11 resistance R
11On produced signal voltage U
2Because integrated transporting discharging IC-1, IC-2 input impedance are high, so U
2≈ IsR
11, as long as the comprehensive R that adjusts
9, R
10, R
11, R
12, R
13Resistance value, just can make U
2＞U
3, at this moment: output 1 pin of integrated transporting discharging IC-1 is low level, the first triode V
1By, its emitter current I
1=0, the relay J dead electricity is reset to that moving together contact DH disconnects, load magnetic valve dead electricity is closed, break contact DD closure, outer warning circuit get and electricly report to the police with light.Control system has just realized the purpose of water dispenser water leakage alarm with the pass valve that leaks.
Meanwhile, output 7 pin of integrated transporting discharging IC-2 are high level, the second triode V
2Conducting, its emitter current are I
2, buzzer HA gets electric with acoustic alarm.At this moment, the DC load electric current I confessed of dc source Uc
DBe approximately the second triode V
2Emitter current I
2(the one the second comparison circuit and the R slightly
3, R
4, R
7, R
8The shunt influence of the DC load electric current that Uc is confessed).
In conjunction with Fig. 3,501 is the mounting box of the utility model experimental prototype, and it has seven lead-out wire: L, N to meet phase line L and the center line N of AC220V respectively; 1 connects the end of load power source EL; 2 connect the LED light emitting diode in the outer warning circuit 106; 3 connect an end of described magnetic valve; 4 connect described preceding electrode A; 5 meet described rear electrode B.Described mounting box Inner is equipped with described wiring board 500.
Present embodiment has following technical characterictic:
A, be provided with outer warning circuit 106 and Inner and report to the police and dc balance circuit 104, can select the form of water leakage alarm as required, preferably: Inner reports to the police and reports to the police with light with the LED light emitting diode with acoustic alarm, outer warning with the HA buzzer.
B, precedingly state, in the course of normal operation of the water dispenser E when signal code Is=0, the second triode V
2By, its emitter current I
2=0, the first triode V
1Conducting, its emitter current are I
1, that is: in the described course of normal operation, the DC load electric current I
D≈ I
1In the protection process of leaking when Is circulates, the first triode V
1By, its emitter current I
1=0, the second triode V
2Conducting, its emitter current are I
2, that is: in the described protection process of leaking, the DC load electric current I
D≈ I
2As long as make triode V
1, V
2Biasing resistor: R
3=R
8, R
4=R
7And adjust suitably that Inner reports to the police and dc balance circuit 104 in R
5, R
6Resistance value, just can realize the first triode V in the course of normal operation
1Emitter current I
1With the second triode V in the protection process of leaking
2Emitter current I
2Approximately equal promptly can realize the dc source load balance.The working method of this dc source load balance can guarantee that described control system long-term stability works reliably.
C, in signal acquisition circuit 100, be provided with piezo-resistance R
U, as long as suitably choose R
UThe pressure sensitive voltage value, just can eliminate the influence of the surge overvoltage of AC220V municipal administration electrical network to integrated transporting discharging IC-1, IC-2, protect them to move safely.
Claims (10)
1. drinking water machine leakage-proof controller, comprise the sensing circuit that leaks (90), mounting box (501), load circuit (105) and outer warning circuit (106), it is characterized in that: wiring board (500) is housed in the described mounting box (501), and this wiring board is made up of reduction voltage circuit (10), DC power supply circuit (20), signal acquisition circuit (100), first comparison circuit (101), executive circuit (102), second comparison circuit (103), interior warning and dc balance circuit (104).
2. drinking water machine leakage-proof controller as claimed in claim 1 is characterized in that described reduction voltage circuit (10) is by the first resistance (R
1), the first electric capacity (C
1) form, and, the described first resistance (R
1), the first electric capacity (C
1) after the parallel connection, the phase line L line of a termination AC220V; First diode (the D in the other end and the DC power supply circuit (20)
1) the negative pole and the second diode (D
2) positive pole connect.
3. drinking water machine leakage-proof controller as claimed in claim 1 is characterized in that the 9th, the tenth resistance (R
9), (R
10), integrated transporting discharging IC-1 has formed first comparison circuit (101), and, the tenth resistance (R
10) the positive pole of a termination dc source (Uc), in-phase input end 3 pin of the other end and integrated transporting discharging IC-1, inverting input 6 pin of integrated transporting discharging IC-2 and the 9th resistance (R
9) connect; The 9th resistance (R
9) the other end be connected with circuit ground; Output 1 pin of integrated transporting discharging IC-1 meets the first triode (V
1) base stage.
4. drinking water machine leakage-proof controller as claimed in claim 1 is characterized in that the first triode (V
1), the 3rd, the 4th resistance (R
3), (R
4), the 5th diode (D
5), relay J formed executive circuit (102), and, the 5th diode (D
5) negative pole, an end of relay J, the 3rd resistance (R
3) an end all connect the positive pole of dc source (Uc); The 5th diode (D
5) positive pole, relay J the other end all with the first triode (V
1) colelctor electrode connect; First triode (the V
1) emitter stage, the 4th resistance (R
4) the equal link of end ground; Three, the 4th resistance (R
3), (R
4) the other end all with the first triode (V
1) base stage connect; The break contact DD of relay J meets the 14 resistance (R in the outer warning circuit (106)
14), moving together contact DH connects load circuit (105).
5. as claim 1 or 4 described drinking water machine leakage-proof controllers, it is characterized in that: when water dispenser (E) was water-tight, moving together contact DH closure, the load magnetic valve of described relay J must be established by cable and open.
6. as claim 1 or 4 described drinking water machine leakage-proof controllers, it is characterized in that: when water dispenser (E) leaks, ponding in the drip tray (P) be dipped into described before when electrode (A) and rear electrode (B), the moving together contact DH disconnection of described relay J, load magnetic valve dead electricity are closed.
7. drinking water machine leakage-proof controller as claimed in claim 1 is characterized in that described signal acquisition circuit is by the 11 to the 13 resistance (R
11), (R
12), (R
13), the 4th, the 5th electric capacity (C
4), (C
5), the 6th diode (D
6), piezo-resistance (R
U) form, and, the 13 resistance (R
13) the N line, another termination of a termination AC220V before electrode (A); The 6th diode (D
6) positive pole meet rear electrode (B), negative pole and the 12 resistance (R
12), the 4th, the 5th electric capacity (C
4), (C
5), piezo-resistance (R
U) all be connected; Four, the 5th electric capacity (C
4), (C
5) and piezo-resistance (R
U) after the parallel connection, an end and described the 6th diode (D
6) negative pole connect the other end (C
5Negative pole end) link ground; The 11 resistance (R
11) a termination circuit ground, the other end and the 12 resistance (R
12) and in-phase input end 5 pin of inverting input 2 pin of integrated transporting discharging IC-1, integrated transporting discharging IC-2 connect; The 12 resistance (R
12) the other end and described the 6th diode (D
6) negative pole connect.
8. drinking water machine leakage-proof controller as claimed in claim 1 is characterized in that described interior warning and dc balance circuit are by the 5th, the 6th, the 7th, the 8th resistance (R
5), (R
6), (R
7), (R
8), the second triode (V
2), buzzer HA forms, and, the 5th resistance (R
5) with after buzzer HA connects again with the 6th resistance (R
6) another termination of positive pole second triode (V of a termination dc source (Uc) behind in parallel, their series and parallels
2) colelctor electrode, the second triode (V
2) emitter stage link ground, 7 pin, the 7th of base stage and integrated transporting discharging IC-2, the 8th resistance (R
7), (R
8) separately an end connects the other end link ground of the 7th resistance (R7), the 8th resistance (R
8) the positive pole of another termination dc source (Uc).
9. drinking water machine leakage-proof controller as claimed in claim 1, it is characterized in that when water dispenser (E) when leaking, the interior warning and dc balance circuit (104) and outer warning circuit (106) sound, light warning simultaneously, wherein, with acoustic alarm, outer warning circuit (106) is reported to the police with light with light emitting diode with buzzer HA for interior warning and dc balance circuit (104).
10. drinking water machine leakage-proof controller as claimed in claim 7 is characterized in that being provided with piezo-resistance (RU) in signal acquisition circuit (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202016497U CN201879496U (en) | 2010-05-07 | 2010-05-07 | Anti-leakage controller for drinking water machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202016497U CN201879496U (en) | 2010-05-07 | 2010-05-07 | Anti-leakage controller for drinking water machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201879496U true CN201879496U (en) | 2011-06-29 |
Family
ID=44177014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202016497U Expired - Fee Related CN201879496U (en) | 2010-05-07 | 2010-05-07 | Anti-leakage controller for drinking water machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201879496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068427A (en) * | 2019-05-14 | 2019-07-30 | 深圳市安瑞华科技有限公司 | A kind of leak water detdction circuit and leakage inspector |
-
2010
- 2010-05-07 CN CN2010202016497U patent/CN201879496U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068427A (en) * | 2019-05-14 | 2019-07-30 | 深圳市安瑞华科技有限公司 | A kind of leak water detdction circuit and leakage inspector |
| CN110068427B (en) * | 2019-05-14 | 2024-04-05 | 重庆安瑞华仪器有限公司 | Water leakage detection circuit and water leakage detection device |
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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: 20110629 Termination date: 20130507 |