CN205691708U - Water heater and earth detector thereof - Google Patents
Water heater and earth detector thereof Download PDFInfo
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- CN205691708U CN205691708U CN201620620512.2U CN201620620512U CN205691708U CN 205691708 U CN205691708 U CN 205691708U CN 201620620512 U CN201620620512 U CN 201620620512U CN 205691708 U CN205691708 U CN 205691708U
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Abstract
This utility model provides a kind of water heater and earth detector thereof.Described water heater earth detector includes water route, detector unit and controller.Water in water-heater water tank flows through described water route, and further flows out for user's use.Detector unit is for detecting the voltage at water-in and water-out two ends, water route, and this voltage that output detections arrives.According to described voltage, controller judges whether the water tank of described water heater leaks electricity.According to such scheme of the present utility model, it is possible to the generation of electric leakage detected in the case of electric leakage initial stage user does not realizes, and remind user maintenance or replacing further, eliminate electric leakage hidden danger, improve the reliability of detection of electrical leakage.And scheme of the present utility model is easy to use, cost increases limited.
Description
Technical field
This utility model relates to technical field of electric appliances, particularly relates to a kind of water heater and earth detector thereof.
Background technology
The various water heaters such as air-source water heater, electric heater, solar water heater are required for using electric energy.Due to user
When using water heater, skin surface has water, and the most once water heater leaks electricity, it would be possible to cause user the biggest
Injury.Therefore, it is necessary to water-heater water tank is carried out detection of electrical leakage and earth leakage protective.Application publication number is CN101865530A's
Chinese invention patent application discloses a kind of electric shock preventing protector of electric water heater, including insulation upper cover, insulation lower cover and insulation
Water-trough plate.Cover under insulation upper cover and insulation and form inlet tube and outlet tube respectively；It is equipped with on the upper/lower terminal face of insulation water-trough plate
The water channel wall that some circles are independent, described biphase bordering on the river forms groove type water stream channel between wall.Current enter from water inlet pipe
The water stream channel of the upper and lower end face of insulation water-trough plate flows through, increases current length, thus realize electroshock-proof function.
Such scheme is disadvantageous in that, reliability is the highest, if it occur that electric leakage, described protection device simply allows human body exempt from
Injured by big electric current.And the electric leakage that the reasons such as aging circuit cause slowly becomes big from little often, increase described protection dress
Put and use hot water to be imperceptible to have electric current electric leakage initial stage user.So, user maintenance or more cannot also be reminded as early as possible
Change.Further, different people is the most different to the sensitivity of electric current.To sum up, this protection device is used to still suffer from certain
Potential safety hazard.
Utility model content
In view of this, this utility model provides a kind of water heater and earth detector thereof, can be effectively improved detection of electrical leakage
Reliability.
According to first aspect of the present utility model, it is provided that a kind of water heater earth detector, including: water route, detection list
Unit and controller；Water in the water tank of water heater flows through described water route, and further flows out for user；Described detection is single
Unit is for detecting the voltage at the water-in and water-out two ends in described water route, and this voltage that output detections arrives；And controller is according to described
Voltage judges whether the water tank W of described water heater leaks electricity.
Further, described device farther includes: alarm unit, for judging what described water tank leaked electricity at controller
In the case of report to the police.
Further, in described water route is arranged on described water tank or outside described water tank.
Further, described detector unit includes two probes of water inlet end and the water side being separately positioned on described water route,
For when described water tank leaks electricity, export the described voltage being formed between two probes.
Further, described controller includes comparator and judging unit；Comparator is for comparing this electricity detected
Pressure and a predetermined voltage, and export comparative result；And according to comparative result, judging unit judges whether described water tank leaks electricity.
Further, when the described voltage detected is more than predetermined voltage, it is judged that the water tank leakage of unit judges water heater
Electricity, otherwise then leakproof.
Further, this controller farther includes enumerator, when judging unit judges that this voltage detected is more than institute
State predetermined voltage, then the count value of enumerator adds 1, until count value increases continuously predetermined value, then judging unit makes hot water
The judgement of the water tank electric leakage of device.
Further, if being interrupted occurs in the increase of the count value of enumerator, then count value resets, it is judged that unit makes hot water
The judgement of the water tank leakproof of device.
According to second aspect of the present utility model, it is provided that a kind of water heater, including the dress described in water tank and any of the above-described item
Put.
According to such scheme of the present utility model, by arranging a water route, and detect the voltage at these water-in and water-out two ends, water route
Judge whether described water tank leaks electricity such that it is able in the case of electric leakage initial stage user does not realizes, sending out of electric leakage detected
Raw, and remind user maintenance or replacing further, eliminate electric leakage hidden danger, improve the reliability of detection of electrical leakage.And this practicality
Novel scheme is easy to use, cost increases limited, it is only necessary to increasing corresponding testing circuit can realize.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can being practiced according to the content of description, below with preferred embodiment of the present utility model and coordinate accompanying drawing detailed
Describe in detail bright as after.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and this practicality is new
The schematic description and description of type is used for explaining this utility model, is not intended that improper restriction of the present utility model.?
In accompanying drawing:
Fig. 1 shows the structured flowchart of water heater and the earth detector thereof being preferable to carry out according to this utility model one.
Fig. 2 shows that the water route of the water heater earth detector according to this utility model one specific embodiment and detection are single
The structural representation of unit.
Fig. 3 shows the detector unit of water heater earth detector according to this utility model one specific embodiment, control
Device processed and the structural representation of alarm unit.
Fig. 4 is the flow chart of the water heater electrical leakage detecting method according to this utility model one preferred embodiment.
Fig. 5 shows the flow process of the described method according to this utility model one specific embodiment.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, concrete below in conjunction with this utility model
Technical solutions of the utility model are clearly and completely described by embodiment and corresponding accompanying drawing.Obviously, described embodiment
It is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, this area
The every other embodiment that those of ordinary skill is obtained under not making creative work premise, broadly falls into this utility model
The scope of protection.
First combining Fig. 1 and water heater earth detector of the present utility model is described, Fig. 1 shows according to this utility model
Water heater and the structured flowchart of included described water heater earth detector D.As it is shown in figure 1, described water heater bag
Include water tank W and water heater earth detector D.Described water heater earth detector D includes water route 1, detector unit 2 and control
Device 3 processed.Water in water-heater water tank W flows through described water route 1, and flows out from water pipe T further, uses for user.Detection
Unit 2 is for detecting the voltage at water-in and water-out two ends, water route 1, and this voltage that output detections arrives.Controller 3 is according to described voltage
Judge whether the water tank W of described water heater leaks electricity.Further, described water heater earth detector D also includes alarm unit
4, report to the police in the case of judging the electric leakage of described water tank at controller 3.
According to such scheme of the present utility model, by arranging a water route, and detect the voltage at these water-in and water-out two ends, water route
Judge whether described water tank leaks electricity such that it is able in the case of electric leakage initial stage user does not realizes, sending out of electric leakage detected
Raw, and remind user maintenance or replacing further, eliminate electric leakage hidden danger, improve the reliability of detection of electrical leakage.And this practicality
Novel scheme is easy to use, cost increases limited, it is only necessary to increasing corresponding testing circuit can realize.
Combine Fig. 1, Fig. 2 and Fig. 3 further below each parts of the present utility model are illustrated one by one.Fig. 1 shows
Water heater according to a preferred embodiment of the present utility model and the structured flowchart of earth detector thereof；Fig. 2 shows basis
The water route of the water heater earth detector of this utility model one specific embodiment and the structural representation of detector unit；Fig. 3 shows
Go out the detector unit 2 of water heater earth detector according to this utility model one specific embodiment, controller 3 and reported to the police single
The structural representation of unit 4.
Described water route 1 is, the most preferably one elongated water route is preferably made up of the elongate water pipe insulated.For increasing described water
The resistance value on road 1, under the immovable premise of composition of water, generally uses the sectional area reducing water route, or increases the length in water route
The method of degree.Therefore in theory, water route is the thinnest, the water route length reaching same detection sensitivity needs is the shortest；On the contrary, water route
The thickest, then need correspondingly to increase water route length.In this utility model, described elongated water route is a relative concept, and preferably this is thin
Long water route is so that the resistance value in water route is bigger, thus detection is sensitiveer, therefore can be according to the needs of certainty of measurement, hot water
The elongated parameter in these water routes of selecting factors such as the water route installation situation of device.Water in water tank W flows through this water route, the most by water
End flows into, and flows out from the other end, with further for user.Described elongated water route, the most as shown in Figure 2, arrange
The water route that how roundabout pipeline on water pipe T is formed.But, this utility model is obviously also not necessarily limited to this, and this water route can be to appoint
The water route with predetermined length of what form, as long as enabling to when water tank leak electricity the water-in and water-out two ends detection in this water route
Go out voltage.Further, the water route 1 in Fig. 1, Fig. 2 is arranged on outside water tank W, but this water route 1 may also be arranged in water tank W, as long as
The situation of water tank W electric leakage can be carried out perception.
Described detector unit 2 is for detecting the voltage at water-in and water-out two ends, water route 1, and this voltage that output detections arrives.At figure
In specific embodiment shown in 2, described detector unit 2 includes two probes being separately positioned on the water-in and water-out two ends in described water route 1
21 and 22, when water tank W exists leaky, potential difference will be formed between two probes 21 and 22 such that it is able to detect
Form the voltage between the Inlet and outlet water two ends in described water route.Preferably, this detector unit 2 includes amplifying circuit (not shown),
This voltage arrived for amplification detection.And it is further preferred that as it is shown on figure 3, described detector unit 2 still further comprise right
This voltage signal detected carries out the current rectifying and wave filtering circuit of rectifying and wave-filtering process, and analog voltage signal is converted to numeral
The A/D convertor circuits of voltage signal etc. process circuit.
The described voltage detected is sent to controller 3 by described detector unit 2 further.Described controller 3 is according to institute
State voltage and judge whether the water tank W of described water heater leaks electricity.Specifically, described controller 3 includes comparator and judging unit.
Comparator is for comparing this voltage and a predetermined voltage detected, this predetermined voltage can be once testing value, such as according to thin
Long water route is many carefully, how long and acceptable erroneous judgement degree obtains through experiment, and export comparative result.Judging unit according to
Comparative result judges whether described water tank leaks electricity.Specifically, show that the described voltage detected is more than predetermined electricity when comparative result
During pressure, it is judged that the water tank electric leakage of unit judges water heater, otherwise then leakproof.
In a preferred embodiment, in order to get rid of random disturbances, it is to avoid wrong report fault, this controller 3 farther includes meter
Number device, when judging unit judges that this voltage detected is more than described predetermined voltage, then counter I adds 1, until this meter
Numerical value increases continuously predetermined value, and such as 10, namely judging unit determines the big unit of this voltage that detects for continuous 10 times and makes a reservation for
Voltage, then judging unit makes the judgement that the water tank W of water heater leaks electricity.Now, it is preferable that controller output control signal, close
Close the load of all water heaters, it is to avoid the generation of dangerous situation.And further preferably, it is judged that unit output control signal, control
Alarm unit 4 is reported to the police.On the other hand, if being interrupted, if i.e. in the judgement of described pre-determined number occurs in the increase of described technical value
During, this voltage being once unsatisfactory for detecting is more than described predetermined voltage, then explanation does not has the water tank of water heater not have
Electric leakage, resets described count value, and water heater is properly functioning.
Additionally, in the specific embodiment shown in Fig. 3, controller 3 is for utilizing a chip microcontroller, and it also includes driving being somebody's turn to do
The circuit structures such as the power circuit of single-chip microcomputer, oscillating circuit and reset circuit.Power circuit provides for whole system stably may be used
The electric energy leaned on.Reset circuit makes whole system electrification reset, improves system stability.Oscillating circuit is single-chip microcomputer offer work
Sequential.But, controller of the present utility model is not limited to this, as long as can realize controlling function accordingly.
Further, described water heater earth detector D also includes alarm unit 4, described for judging at controller 3
Report to the police in the case of water tank electric leakage.This alarm unit such as sends alarm signal, to remind user in the way of display or sound
Maintenance or replacing etc..Display mode, for example, word or display lamp, voice mode, for example, beep warning etc..Described list of reporting to the police
Unit is generally arranged on the guidance panel of water heater, it is apparent that be also not necessarily limited to this.
Below in conjunction with Fig. 4, Fig. 5, water heater electrical leakage detecting method of the present utility model is described.Fig. 4 shows basis
The flow chart of the described method of this utility model one preferred implementation, Fig. 5 shows and is embodied as according to this utility model one
The flow process of the described method of example.As shown in Figure 4, described water heater electrical leakage detecting method includes detecting step S1 and judges step
S2.Described detecting step, detects the voltage at the water-in and water-out two ends in a water route, and this voltage that output detections arrives.Water-heater water tank
Water in W flows through described water route, and flows out from water pipe further, uses for user.And rate-determining steps S2, according to detection
To described voltage judge whether the water tank W of described water heater leaks electricity.Further, described method also includes alarming step S3,
For reporting to the police in the case of judging the electric leakage of described water tank.
Water route 1 as described above, described water route, is not repeating at this.In described detecting step, as also mentioned above, example
As described in the water-in and water-out two ends in water route 1 two probes 21 and 22 are set, when water tank W exists leaky, at two probes 21
And potential difference between 22, will be formed such that it is able to the voltage formed between the Inlet and outlet water two ends in described water route detected.Excellent
Selection of land, described rate-determining steps S2 farther includes comparison step and judges step.Comparison step, for compare detect should
Voltage and a predetermined voltage, and export comparative result.Judge step, judge whether described water tank leaks electricity according to comparative result.Tool
Body ground, when the described voltage detected is more than predetermined voltage, it is judged that the water tank electric leakage of unit judges water heater, otherwise does not leaks
Electricity.In a preferred embodiment, in order to get rid of random disturbances, it is to avoid wrong report fault, this control rate-determining steps S2 farther includes
Counting step, when judging unit judges that this voltage detected is more than described predetermined voltage, then count value I adds 1, until count value
Increase continuously big predetermined value, such as 10, i.e. judging unit judges that the voltage detected more than predetermined voltage, then judges for continuous 10 times
Step makes the judgement of the water tank W electric leakage of water heater.On the other hand, if in the judge process of described pre-determined number, having one
Secondary this voltage being unsatisfactory for detecting is more than described predetermined voltage, then explanation does not has the water tank of water heater not leak electricity, by described
Count value resets, and water heater is properly functioning.Further, described method also includes alarming step S3, for judging described water
Report to the police in the case of case electric leakage.As described above, in this alarming step, such as, in the way of display or sound, send alarm signal
Number, to remind user maintenance or replacing etc..Display mode, for example, word or display lamp, voice mode, for example, beep are reported to the police
Deng.
Below in conjunction with Fig. 5, the water heater electrical leakage detecting method of this utility model one specific embodiment is illustrated.At this
In specific embodiment, include that two probes 21 and 22, described pre-determined number are set as 10 times, controller is for Fig. 3 institute with detector unit
Illustrate as a example by the single-chip microcomputer shown.But this utility model is certainly not limited thereto.
As it is shown in figure 5, after system electrification, if now not electric leakage, then almost without voltage between two probes, if there being leakage
Electricity, if now just user is with water, then leakage current can form loop through described water route 1 and user's human body with the earth.By
In the resistance value in described water route 1, when electric current flows through the two ends in water route 1, must form a voltage, this voltage can be by gathering
Analog voltage between probe 21 and probe 12 obtains.As described above, analog voltage between probe 21 and probe 22 is entered
Row rectification, amplifies and after analog digital conversion, passes to single-chip microcomputer, and this voltage is compared by single-chip microcomputer with described predetermined voltage:
If probe both end voltage is bigger than described predetermined voltage, illustrate now to there may be the situation of water tank electric leakage.Described meter
Numerical value I adds 1, until continuous acquisition to No. 10 times probe both end voltage is bigger than predetermined voltage, has then drawn leak current fault.Now, control
Device processed is first shut off all loads, and then the failure code of report water tank electric leakage is to display or buzzer, with notify user and
Time maintenance.In 10 sampling processes, as long as it is bigger than described predetermined voltage to be once unsatisfactory for probe both end voltage, then variable I
Reset, restart detection.
On the other hand, if probe both end voltage is less than predetermined voltage, not electric leakage is described, is entered as 0 directly to variable I,
Then normal water heating function is performed.
Above water heater of the present utility model and earth detector thereof and method are described.New according to this practicality
The such scheme of type, by arranging a water route, and detects the voltage at these water-in and water-out two ends, water route to judge whether described water tank leaks
Electricity such that it is able to the generation of electric leakage detected in the case of electric leakage initial stage user does not realizes, and remind user's inspection further
Repair or change, eliminate electric leakage hidden danger, improve the reliability of detection of electrical leakage.And scheme of the present utility model is easy to use, one-tenth
This increase is limited, it is only necessary to increasing corresponding testing circuit can realize.
It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can
To be mutually combined.
The above, be only preferred embodiment of the present utility model, not this utility model is made any in form
Restriction, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model,
All still fall within the range of technical solutions of the utility model.
Claims (9)
1. a water heater earth detector, it is characterised in that including:
Water route, detector unit and controller；
Water in the water tank of water heater flows through described water route, and further flows out for user；Described detector unit is used for examining
Survey the voltage at the water-in and water-out two ends in described water route, and this voltage that output detections arrives；And controller judges according to described voltage
Whether the water tank of described water heater leaks electricity.
2. device as claimed in claim 1, it is characterised in that farther include:
Alarm unit, reports to the police in the case of judging the electric leakage of described water tank at controller.
3. device as claimed in claim 1 or 2, it is characterised in that
In described water route is arranged on described water tank or outside described water tank.
4. device as claimed in claim 1, it is characterised in that
Described detector unit includes the probe of water inlet end and the water side being separately positioned on described water route, for leaking when described water tank
During electricity, the described voltage that output is formed between two probes.
5. device as claimed in claim 1, it is characterised in that
Described controller includes comparator and judging unit；Comparator is for comparing this voltage detected and a predetermined electricity
Pressure, and export comparative result；And according to comparative result, judging unit judges whether described water tank leaks electricity.
6. device as claimed in claim 5, it is characterised in that
When the described voltage detected is more than predetermined voltage, it is judged that the water tank electric leakage of unit judges water heater, otherwise do not leak
Electricity.
7. the device as described in claim 5 or 6, it is characterised in that
This controller farther includes enumerator, when judging unit judges that this voltage detected is more than described predetermined voltage, then
The count value of enumerator adds 1, until count value increases continuously predetermined value, then judging unit makes the water tank electric leakage of water heater
Judge.
8. device as claimed in claim 7, it is characterised in that
If being interrupted occurs in the increase of the count value of enumerator, then count value resets, it is judged that unit is made the water tank of water heater and do not leaked
The judgement of electricity.
9. a water heater, including water tank and the device as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620620512.2U CN205691708U (en) | 2016-06-20 | 2016-06-20 | Water heater and earth detector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620620512.2U CN205691708U (en) | 2016-06-20 | 2016-06-20 | Water heater and earth detector thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205691708U true CN205691708U (en) | 2016-11-16 |
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ID=57416579
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620620512.2U Active CN205691708U (en) | 2016-06-20 | 2016-06-20 | Water heater and earth detector thereof |
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| CN (1) | CN205691708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019052A (en) * | 2016-06-20 | 2016-10-12 | 珠海格力电器股份有限公司 | Water heater and electric leakage detection device and method thereof |
-
2016
- 2016-06-20 CN CN201620620512.2U patent/CN205691708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106019052A (en) * | 2016-06-20 | 2016-10-12 | 珠海格力电器股份有限公司 | Water heater and electric leakage detection device and method thereof |
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