CN101828872B - Drinking water machine leakage-proof control device - Google Patents
Drinking water machine leakage-proof control device Download PDFInfo
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- CN101828872B CN101828872B CN2010101769037A CN201010176903A CN101828872B CN 101828872 B CN101828872 B CN 101828872B CN 2010101769037 A CN2010101769037 A CN 2010101769037A CN 201010176903 A CN201010176903 A CN 201010176903A CN 101828872 B CN101828872 B CN 101828872B
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Abstract
The invention relates to a drinking water machine leakage-proof control device comprising a leakage sensing circuit, a mounting box, a load circuit and an external alarm circuit, wherein the leakage sensing circuit is arranged in a water receiving disc at the bottom of a drinking water machine and comprises a front electrode and a back electrode; and a circuit board in the mounting box comprises a voltage-reduction circuit, a DC power circuit, a signal acquisition circuit, a first comparison circuit, an executive circuit, a second comparison circuit and an internal-alarm and DC balancing circuit. When the drinking water machine does not leak water, no water is in the water receiving disc, the signal acquisition circuit has no signal current input, a control system is communicated with the power of an inflow solenoid valve, the inflow solenoid valve is started, and the drinking water machine has normal inflow and work; when the drinking water machine leaks water and the front electrode and the back electrode are dipped in water, the signal current is driven by tested signal source AC 220V municipal AC to be input in the signal acquisition circuit, the control system cuts off the power of the inflow solenoid valve, the inflow solenoid valve is turned off, and the leakage of the drinking water machine is stopped; and at the same time, the alarm circuit alarms in voice and light to tell the leakage of the drinking water machine.
Description
Technical field
The present invention relates to field of water fountain, relate in particular to a kind of drinking water machine leakage-proof control device.
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 tap 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 leak-proof control device.
Summary of the invention
The objective of the invention is deficiency, a kind of dependable performance, drinking water machine leakage-proof control device with low cost are provided at prior art.
The present invention realizes that the technical scheme of above-mentioned technical purpose is: a kind of drinking water machine leakage-proof control device 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, well 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 comparator circuit, executive circuit, second comparator circuit, interior warning and dc balance circuit.Wherein, signal acquisition circuit, first comparator circuit, executive circuit, second comparator circuit, interior warning and dc balance circuit forming control system.
Electrode is connected by the center line N of a dropping resistor 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 invention 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 dropping resistor, preceding electrode, rear electrode as testing source; The driving of tested person signal source AC220V municipal administration alternating current, marking current 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 present invention are:
1, is provided with " second comparator circuit " and " interior warning and dc balance circuit ", in order to the DC load electric current that direct supply is confessed in the operate as normal and two processes of protection of leaking of " acoustic alarm of leaking " and balance water dispenser in the mounting box.
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 marking current for control system.
Use the present invention, 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 invention is further reduced, and, comparing with undesired signal or conventional testing source, AC220V ten minutes is powerful, so anti-interference of the present invention is good, reliability is high.
3, because described direct supply 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 invention,
Fig. 2 is the circuit theory diagrams of the embodiment of the invention,
Fig. 3 is the profile synoptic diagram of mounting box 501 of the present invention.
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 comparator circuit, 102 for executive circuit, 103 be second comparator circuit, 104 for interior warning and dc balance circuit, 105 for load circuit, 106 be that outer warning circuit, EL are that load power source, R13 are dropping resistor.
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 marking current, 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 extension line 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.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
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, voltage stabilizing 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 voltage stabilizing 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 direct supply Uc; The 5th diode D
5Positive pole, relay J the other end all with the first triode V
1Collector connect; The first triode V
1Emitter, 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 comparator circuit 101.And, the tenth resistance R
10The positive pole of a termination direct supply 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 terminal 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 comparator circuit 103.
Five, the 6th, the 7th, the 8th resistance R
5, R
6, R
7, R
8, the second triode V
2(9014), hummer HA has formed interior warning and dc balance circuit 104.And, the 5th resistance R
5With after hummer HA connects again with the 6th resistance R
6Another termination of positive pole second triode V of a termination direct supply Uc behind parallel connection, their series and parallels
2Collector, the second triode V
2Emitter 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 direct supply 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, voltage dependent resistor (VDR) 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, voltage dependent resistor (VDR) R
UAll be connected; Four, the 5th capacitor C
4, C
5With voltage dependent resistor (VDR) 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 marking current 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 solenoid 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 terminal 7 pin output low levels of IC-2, the second triode V
2End its emitter current I
2=0, hummer HA does not work, at this moment, and the DC load electric current I that direct supply Uc confesses
DBe approximately the first triode V
1Emitter current I
1(the one the second comparator 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, marking current I
SLogical 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 marking current I
SCirculation path as can be known: device first resistance R in 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
DBe again marking current I
SThe double action of circulation path is provided.In the present invention, claim that this technology is " circuit multiplexer " technology.
Because I
SCirculation, 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 terminal 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 solenoid 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 terminal 7 pin of integrated transporting discharging IC-2 are high level, the second triode V
2Conducting, its emitter current are I
2, hummer HA gets electric with acoustic alarm.At this moment, the DC load electric current I confessed of direct supply Uc
DBe approximately the second triode V
2Emitter current I
2(the one the second comparator 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 are the mounting box of experimental prototype of the present invention, and it has seven extension line: 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 solenoid valve; 4 connect described preceding electrode A; 5 meet described rear electrode B.Described wiring board 500 is housed in the described mounting box.
Present embodiment has following technical characterictic:
A, be provided with outer warning circuit 106 and interior warning and dc balance circuit 104, can select the form of water leakage alarm as required, preferably: interior warning is reported to the police with light with the LED light emitting diode with acoustic alarm, the outer warning with the HA hummer.
B, precedingly state, in the course of normal operation of the water dispenser E when marking current 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 R in interior warning of suitable adjustment and the dc balance circuit 104
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 direct supply load balance.The working method of this direct supply load balance can guarantee that described control system long-term stability works reliably.
C, in signal acquisition circuit 100, be provided with voltage dependent resistor (VDR) 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 (8)
1. drinking water machine leakage-proof control device, described drinking water machine leakage-proof control device is made up of the sensing circuit that leaks (90), mounting box (501), load circuit (105) and outer warning circuit (106), it is characterized in that:
A, employing AC220V municipal administration alternating current are made testing source;
B, in water dispenser (E) operate as normal and two processes of protection of leaking DC load electric current (I
D) be balance;
C, utilize the circuit multiplexer technology, reduction voltage circuit (10), DC power supply circuit (20) not only provided direct supply (Uc) but also constituted circulation path for marking current (Is) for control system.
2. drinking water machine leakage-proof control device as claimed in claim 1, the sensing circuit (90) that it is characterized in that leaking is made up of preceding electrode (A), rear electrode (B), drip tray (P); Described drip tray (P) is installed in the bottom of water dispenser (E); Electrode (A), rear electrode (B) are arranged on the bottom of described drip tray (P) mutually non-contiguously before described, and a slice insulation spacer (C) is established in rear electrode (B) below.
3. drinking water machine leakage-proof control device as claimed in claim 2 is characterized in that described preceding electrode (A) is by a dropping resistor (R
13) be connected with the center line N of AC220V municipal administration alternating current; The 6th diode (D in described rear electrode (B) and the signal acquisition circuit (100)
6) connect.
4. drinking water machine leakage-proof control device as claimed in claim 1 is characterized in that described testing source AC220V municipal administration alternating current is by the 13 resistance (R
13), preceding electrode (A), rear electrode (B) be connected with signal acquisition circuit (100).
5. drinking water machine leakage-proof control device as claimed in claim 3 is characterized in that described marking current (I
S) be subjected to the driving of described testing source AC220V municipal administration alternating current, by the 13 resistance (R
13), preceding electrode (A), rear electrode (B) import in the described signal acquisition circuit (100).
6. drinking water machine leakage-proof control device as claimed in claim 1 is characterized in that the device first resistance (R in described reduction voltage circuit (10), the DC power supply circuit (20)
1), the first electric capacity (C
1), the first diode (D
1) both be DC load electric current (I
D) be again marking current (I
S) circulation path is provided.
7. drinking water machine leakage-proof control device as claimed in claim 1 is characterized in that: in water dispenser (E) course of normal operation, and DC load electric current (I
D) and the first triode (V
1) emitter current (I
1) approximately equal; In the protection process of leaking, DC load electric current (I
D) and the second triode (V
2) emitter current (I
2) approximately equal.
8. drinking water machine leakage-proof control device as claimed in claim 1 is characterized in that: the first triode (V in the described course of normal operation
1) emitter current (I
1) with the described protection process of leaking in the second triode (V
2) emitter current (I
2) approximately equal, that is: in described operate as normal and two processes of protection of leaking, the DC load electric current (I that direct supply (Uc) is confessed
D) be balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101769037A CN101828872B (en) | 2010-05-07 | 2010-05-07 | Drinking water machine leakage-proof control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101769037A CN101828872B (en) | 2010-05-07 | 2010-05-07 | Drinking water machine leakage-proof control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101828872A CN101828872A (en) | 2010-09-15 |
| CN101828872B true CN101828872B (en) | 2011-09-07 |
Family
ID=42713202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101769037A Active CN101828872B (en) | 2010-05-07 | 2010-05-07 | Drinking water machine leakage-proof control device |
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| Country | Link |
|---|---|
| CN (1) | CN101828872B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670032A (en) * | 2018-04-10 | 2018-10-19 | 常州剑湖金城车辆设备有限公司 | The control device and method of water dispenser |
| CN109875399A (en) * | 2019-04-17 | 2019-06-14 | 安徽信息工程学院 | Water dispenser pallet containing leakage inspector |
| CN113358302B (en) * | 2021-08-10 | 2021-11-19 | 深之蓝(天津)水下智能科技有限公司 | Underwater robot water leakage detection system and method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2569705Y (en) * | 2002-09-25 | 2003-09-03 | 蔡应麟 | Leakaging protector |
| DE102004004833A1 (en) * | 2004-01-30 | 2005-08-18 | BSH Bosch und Siemens Hausgeräte GmbH | Coffee machine with a drawer for feeding a coffee pad |
| CN2845661Y (en) * | 2005-10-21 | 2006-12-13 | 陈士礼 | Full automatic water cut-off and electrisity cut-off safety device for leakage of water drinking machine |
| CN2894550Y (en) * | 2006-09-19 | 2007-05-02 | 上海康福特环境科技有限公司 | Leakage automatic protection device for divect drinking water machine |
| CN101339421B (en) * | 2008-08-11 | 2011-06-29 | 伍华本 | Wireless control water leakage detection protector |
| CN201307228Y (en) * | 2008-11-25 | 2009-09-09 | 苏州滨特尔水处理有限公司 | Novel smart water leakage controller of water treatment device |
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2010
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|---|---|
| CN101828872A (en) | 2010-09-15 |
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Owner name: JIANGSU GAOSHIDA POWER TOOLS CO., LTD. Free format text: FORMER OWNER: NINGBO ZHENHAI HUATAI ELECTRICAL EQUIPMENT FACTORY Effective date: 20140718 |
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Free format text: CORRECT: ADDRESS; FROM: 315200 NINGBO, ZHEJIANG PROVINCE TO: 226200 NANTONG, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140718 Address after: Lvsigang Town, Qidong City Industrial Park, 226200 Jiangsu city of Nantong Province Patentee after: JIANGSU GAOSHIDA ELECTRIC TOOL CO., LTD. Address before: 315200 Zhejiang province Zhenhai District of Ningbo City Jiao Chuan Ying Shi Qiao Zhu No. 74 Patentee before: Ningbo Zhenhai Huatai Electrical Appliance Factory |