CN209027738U - A kind of leakage inspector - Google Patents
A kind of leakage inspector Download PDFInfo
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- CN209027738U CN209027738U CN201821567079.6U CN201821567079U CN209027738U CN 209027738 U CN209027738 U CN 209027738U CN 201821567079 U CN201821567079 U CN 201821567079U CN 209027738 U CN209027738 U CN 209027738U
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Abstract
The utility model relates to a kind of leakage inspectors, and including having the reference electrode there are two electrode catheter, tool is there are two the detecting electrode of electrode catheter, the detection circuit board being electrically connected respectively with reference electrode, detecting electrode.Reference electrode is arranged in water route, and an electrode catheter of reference electrode is electrically connected with an input terminal of detection circuit board, another electrode catheter ground connection of reference electrode.Detecting electrode is arranged in leak water detdction position, and an electrode catheter of detecting electrode is electrically connected with another input terminal of detection circuit board, another electrode catheter ground connection of detecting electrode.The leakage inspector can effectively distinguish condensed water and water leakage situation, and then avoid condensed water false alarm.The utility model further relates to a kind of water purifier, including water purifier ontology and leakage inspector, and reference electrode is arranged in the outlet pipe of water purifier ontology, and detecting electrode is arranged on the leak water detdction position of water purifier body bottom portion.The water purifier leak water detdction is accurate, uses hommization.
Description
Technical field
The utility model relates to a kind of leakage inspectors.
Background technique
Leakage inspector would generally be set in the articles for being equipped with water pipeline, for detecting the leakage inside articles
Regimen condition, and then convenient processing in time.Such as existing radiator, air-conditioning, washing machine, is all provided in water purifier electric appliance water heater
It is equipped with leakage inspector, and then facilitates user to obtain the water leakage situation of articles in time, and then adopt an effective measure, is avoided
Loss.Such as the Chinese utility model patent " one that Authorization Notice No. is CN204422154U (application No. is 201520048744.0)
Kind of leak water detdction module ", disclosed in leak water detdction module then may be mounted in the various products with waterway pipe.It should
Leak water detdction module includes detecting electrode and detection circuit, and detecting electrode includes the first detecting electrode and the second detecting electrode,
In use, the first detecting electrode and the second detecting electrode can be connected in water, and then can detecte in the case where leak occurs
Out the case where leak.Authorization Notice No. is the Chinese utility model of CN206613254U (application No. is CN201720150264.4)
Patent " a kind of water purifier ", disclosed in water purifier include shell and the leak water detdction component for being set to the housing bottom,
The leak water detdction component includes detection plate and the first electrode and second electrode that are arranged at intervals in the detection plate, described
Electrode bar is provided in first electrode and second electrode.When leak does not exist together outside stream from Housing Base, it is evenly distributed on
Electrode bar 23 in first electrode 21 and second electrode 22 can detect leak, and then carry out water leakage alarm.
The conducting that these leakage inspectors above-mentioned pass through two electrodes detects leak, but in some use
In the use process of product, also there is the case where will appear condensed water, and often the appearance of condensed water is not articles device fault
Problem does not require generally to do water leakage alarm work.And if using leakage inspector above-mentioned, in the feelings for condensed water occur
Also it will do it water leakage alarm under condition, then the false alarm situation of condensed water can often occur.
Utility model content
Technical problem to be solved in the utility model be for the above-mentioned prior art provide one kind can effectively distinguish it is cold
Condensate and water leakage situation, and then avoid the leakage inspector of condensed water false alarm.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of leakage inspector, feature
It is: including
Reference electrode, including two electrode catheters are arranged in water route；
Detecting electrode, including two electrode catheters are arranged in leak water detdction position；
Detection circuit board is electrically connected with reference electrode, detecting electrode respectively, for the inspection to reference electrode and detecting electrode
Signal is surveyed to be compared and export leak water detdction signal.
Simply, the detection circuit board include the first measure loop, the second measure loop and comparator, described first
The input terminal of measure loop is electrically connected with the electrode catheter of reference electrode, the input terminal of the second measure loop and the electricity of detecting electrode
Pole probe electrical connection, first measure loop, the second measure loop output end be electrically connected respectively with comparator.
In order to facilitate leak prompt is carried out, the detection circuit board further includes the display lamp for being connected to comparator output terminal
And/or buzzer.
Preferably, first measure loop includes first resistor and second resistance, and the first end of first resistor connects electricity
Source, the second end of first resistor are electrically connected with the electrode catheter of reference electrode, the first end and first resistor of the second resistance
Second end electrical connection, the second end of the second resistance is electrically connected with the positive input of comparator；
Second measure loop includes 3rd resistor and the 4th resistance, and the resistance value of the 3rd resistor is greater than or equal to the
The resistance value of one resistance, the resistance value of the 4th resistance are equal to the resistance value of second resistance, and the first end of 3rd resistor connects power supply, third electricity
The second end of resistance is electrically connected with the electrode catheter of reference electrode, the first end of the 4th resistance and the second end electricity of 3rd resistor
Connection, the second end of the 4th resistance are electrically connected with the reverse input end of comparator.
Preferably, the detecting electrode is provided at least two, and each detecting electrode is electrically connected with detection circuit board respectively.
Compared with the prior art, the advantages of the utility model are: the leakage inspector, is placed on water for reference electrode
Lu Zhong so that detecting water in water route is connected signal under the reference electrode, while being arranged detecting electrode in leaking area, so exists
In the case that detecting electrode is connected by water, the detection signal that can will test electrode is compared with the signal of reference electrode, than
There is the case where leak in the case where condensation flow to leaking area can effectively be distinguished compared with result or device, can so keep away
Exempt from the false alarm of condensed water, use is more humanized.The leakage inspector can accurate detection water leakage situation, avoid because
The frequent alarm that condensed water occurs, decreases service work, more convenient to use.
Detailed description of the invention
Fig. 1 is the circuit diagram of leakage inspector in the utility model embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
As shown in Figure 1, the leakage inspector in the present embodiment includes reference electrode 1, detecting electrode 2, detection circuit board
3.Reference electrode 1, detecting electrode 2 include that there are two electrode catheters.
Wherein reference electrode 1 is arranged in the normal water route of product, i.e. the two of reference electrode 1 electrode catheter is in water route
The state that connection is remained by the water in water route, the water between two electrode catheters then will form certain equivalent electricity
Resistance, since the difference of different regions water quality is different, the equivalent resistance that the water between two electrode catheters is constituted also can be with variation
It fluctuates, remembers that the equivalent resistance that the water between two electrode catheters is constituted is R in the present embodimentw。
Detecting electrode 2 is arranged in leak water detdction position, and usual leak water detdction position is located at the bottom of water purifier, that is, will test
Two electrode catheters of electrode 2 are arranged on the leak water detdction position of water purifier bottom.The quantity of detecting electrode 2 is examined according to leak
The quantity that location is set determines that a detecting electrode 2 is arranged in that is, each leak water detdction position.Water purifier at work may
Condensed water is generated, when condensed water falls in water purifier bottom, the case where device inside water purifier does not occur leakage, such feelings
Without carrying out water leakage alarm under condition.Device sealing only inside water purifier is not tight or the feelings damaged and leak occurs occurs
It just needs to carry out water leakage alarm under condition, and then reminds user to repair, avoid the occurrence of bigger damage or even cause to ask safely
Topic.
Detection circuit board 3 is electrically connected with reference electrode 1, detecting electrode 2 respectively, for reference electrode 1 and detecting electrode 2
Detection signal be compared and export leak water detdction signal.The detection circuit board 3 is detected including the first measure loop 31, second
Circuit 32, comparator 33 and warning device, the input terminal of the first measure loop 31 and an electrode catheter electricity of reference electrode 1
Connection, another electrode catheter ground connection of reference electrode 1.The input terminal of second measure loop 32 and the electrode of detecting electrode 2 are visited
Needle electrical connection, another electrode catheter ground connection of detecting electrode 2.The output end of first measure loop 31, the second measure loop 32
It is electrically connected respectively with comparator 33.Warning device can use display lamp 4 and/or buzzer 5, and warning device, which is connected electrically in, to be compared
33 output end of device.Power connector end one end of comparator 33 connects power supply, other end ground connection.
Specifically, the first measure loop 31 includes first resistor R1 and second resistance R2, and the first end of first resistor R1 connects
Power supply is connect, the second end of first resistor R1 is electrically connected with the electrode catheter of reference electrode 1, the first end of second resistance R2 and first
The second end of resistance R1 is electrically connected, and the second end of second resistance R2 is electrically connected with the positive input of comparator 33.
Second measure loop 32 includes 3rd resistor R3 and the 4th resistance R4, and the resistance value of 3rd resistor R3 is greater than or equal to the
The resistance value of one resistance R1, the resistance value of the 4th resistance R4 are equal to the resistance value of second resistance R2, and the first end of 3rd resistor R3 connects electricity
The second end in source, 3rd resistor R3 is electrically connected with the electrode catheter of reference electrode 1, the first end and 3rd resistor of the 4th resistance R4
The second end of R3 is electrically connected, and the second end of the 4th resistance R4 is electrically connected with the reverse input end of comparator 33.In the present embodiment
The resistance value of 3rd resistor R3 is greater than the resistance value of first resistor R1.The resistance value of 3rd resistor R3 it is sensitive according to the leakage inspector
Degree is adjusted.The resistance value of 3rd resistor R3 is smaller, and sensitivity is higher.
In order to which aspect is described below, the voltage for defining first resistor R1 second end is V1, defines 3rd resistor R3 the
The voltage at two ends is V2, supply voltage VCC.
Reference electrode 1 is to access in water, therefore two electrode catheters of reference electrode 1 are to pass through tap water and be connected to
It is formed together circuit, therefore the voltage value of V1 is the equivalent resistance R of water between 1 probe of first resistor R1 and reference electrodewPartial pressure,
That is V1=VCC*Rw/(Rw+ R1), corresponding V1 < VCC.
The leak water detdction position in water purifier is not water, i.e. the two of detecting electrode 2 electrode catheter under normal circumstances
It is not turned on, at this time V2=VCC, at this time V2 > V1.It is positive defeated to be greater than comparator 33 for the voltage of 33 reverse input end of comparator at this time
Enter the voltage at end, therefore comparator 33 can export low level, i.e. the output voltage of comparator 33 is zero, output signal 0.Accordingly
Display lamp 4 do not work, buzzer 5 is not also rung.
When there is condensed water to fall on leak water detdction position, since condensed water is pure water or close to pure water, condensed water exists
Equivalent resistance R between two electrode catheters of detecting electrode 2 is far longer than the equivalent of water between two electrode catheters of reference electrode 1
Resistance.Therefore V2 ≈ VCC, at this time then V2 > V1.The voltage of 33 reverse input end of comparator is greater than 33 positive input of comparator
Voltage, therefore comparator 33 can export low level, i.e. the output voltage of comparator 33 is zero, output signal 0.Corresponding display
Lamp 4 does not work, buzzer 5 is not also rung.
When the water in water route falls on leak water detdction position, that is, in the case where real leak occurs, the two of detecting electrode 2
A electrode catheter can be submerged, at this time between the two of detecting electrode 2 electrode catheter water equivalent resistance R ≈ Rw, but due to R3 >
R1 and R2=R4, therefore V2 < V1,33 reverse input end voltage of comparator is less than 33 positive input voltage of comparator, therefore compares
High level is exported compared with device 33, the output voltage of comparator 33 is VCC, so the display lamp 4 exported below is lighted, buzzer 5 rings
The case where ringing, prompting leak.
The leakage inspector can effectively distinguish the case where condensed water and leak, and then avoid carrying out in the case of condensed water
The case where leakage false alarming, warning message is more accurate, reduces service work, and use is more humanized.
Leakage inspector in the present embodiment can apply it is various have water route and need to detect water leakage situation
In product, can such as it apply in water purifier.
Claims (5)
1. a kind of leakage inspector, it is characterised in that: including
Reference electrode (1), including two electrode catheters are arranged in water route；
Detecting electrode (2), including two electrode catheters are arranged in leak water detdction position；
Detection circuit board (3) is electrically connected with reference electrode (1), detecting electrode (2) respectively, for reference electrode (1) and detection
The detection signal of electrode (2) is compared and exports leak water detdction signal.
2. leakage inspector according to claim 1, it is characterised in that: the detection circuit board (3) includes the first inspection
Survey time road (31), the second measure loop (32) and comparator (33), the input terminal of first measure loop (31) and reference
The electrode catheter of electrode (1) is electrically connected, and the electrode catheter of the input terminal and detecting electrode (2) of the second measure loop (32) is electrically connected
Connect, first measure loop (31), the second measure loop (32) output end be electrically connected respectively with comparator (33).
3. leakage inspector according to claim 2, it is characterised in that: the detection circuit board (3) further includes connection
In the display lamp (4) and/or buzzer (5) of comparator (33) output end.
4. leakage inspector according to claim 2, it is characterised in that: first measure loop (31) includes first
The first end of resistance (R1) and second resistance (R2), first resistor (R1) connects power supply, the second end and ginseng of first resistor (R1)
The electrode catheter electrical connection of electrode (1) is examined, the second end of the first end and first resistor (R1) of the second resistance (R2) is electrically connected
It connects, the second end of the second resistance (R2) is electrically connected with the positive input of comparator (33)；
Second measure loop (32) includes 3rd resistor (R3) and the 4th resistance (R4), the resistance value of the 3rd resistor (R3)
More than or equal to the resistance value of first resistor (R1), the resistance value of the 4th resistance (R4) is equal to the resistance value of second resistance (R2), third electricity
The first end for hindering (R3) connects power supply, and the second end of 3rd resistor (R3) is electrically connected with the electrode catheter of reference electrode (1), described
The first end of 4th resistance (R4) is electrically connected with the second end of 3rd resistor (R3), the second end of the 4th resistance (R4) with than
Reverse input end compared with device (33) is electrically connected.
5. leakage inspector according to claim 1, it is characterised in that: the detecting electrode (2) is provided at least two
A, each detecting electrode (2) is electrically connected with detection circuit board (3) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821567079.6U CN209027738U (en) | 2018-09-25 | 2018-09-25 | A kind of leakage inspector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821567079.6U CN209027738U (en) | 2018-09-25 | 2018-09-25 | A kind of leakage inspector |
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| Publication Number | Publication Date |
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| CN209027738U true CN209027738U (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821567079.6U Active CN209027738U (en) | 2018-09-25 | 2018-09-25 | A kind of leakage inspector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829385A (en) * | 2019-10-29 | 2020-02-21 | 深圳市吉影科技有限公司 | Battery leakage protection circuit and method and electronic product |
-
2018
- 2018-09-25 CN CN201821567079.6U patent/CN209027738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829385A (en) * | 2019-10-29 | 2020-02-21 | 深圳市吉影科技有限公司 | Battery leakage protection circuit and method and electronic product |
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