CN203431297U - Electric heating faucet - Google Patents
Electric heating faucet Download PDFInfo
- Publication number
- CN203431297U CN203431297U CN201320519407.6U CN201320519407U CN203431297U CN 203431297 U CN203431297 U CN 203431297U CN 201320519407 U CN201320519407 U CN 201320519407U CN 203431297 U CN203431297 U CN 203431297U
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- resistance
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- electric heating
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- circuit control
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Abstract
The utility model discloses an electric heating faucet which comprises a main body and a circuit control portion. The main body comprises a fluid channel and an electric heating body, wherein the electric heating body is arranged between a fluid inlet and a fluid outlet of the fluid channel and is in electric connection with the circuit control portion, the fluid channel is further provided with two resistance test points located on the two sides of the electric heating body respectively. The circuit control portion compares a preset resistance D1 and a fluid resistance T between the two resistance test points, and when the fluid resistance T is larger than the preset resistance D1, a power supply circuit of the electric heating body is closed, a zero-potential point is further arranged in the fluid channel, one end, close to the zero-potential point, of the electric heating body is in electric connection with a power live line, and the other end of the electric heating body is in electric connection with a power null line. The electric heating faucet can ensure use safety for a user under the extreme conditions of reduced resistance of tap water and poor grounding.
Description
Technical field
The utility model relates to a kind of electric hot water tap of rapid heating.
Background technique
Electric hot water tap, plug and play, the instantaneous hot fluid that adds, its small volume, but power is large compared with conventional storage-type electric water heater, and it normally utilizes electrothermal body directly in fluid, to work, and while particularly utilizing naked silk heating, has heavy current to exist in inner bag.In order to prevent that heavy current from flowing to human body from inner bag; whole fluid passage can arrange certain length conventionally; to guarantee that electrothermal body produces enough large fluid resistance to fluid output; thereby guarantee to flow to fluid the electric current that the electric current of human body requires much smaller than human-body safety, this is exactly so-called anti-electric wall technology.But the setting of anti-electric wall, the normal resistance rate scope based on as water or other fluid normally, if the contained impurity of fluid is too much, cause resistivity decreased, will allow so-called anti-electric wall effect reduce, the electric current that flows to human body also can increase, and can allow user produce uncomfortable sensation security incident even occurs under some extreme case.
Moreover, in user's using process, perhaps there are the various situations that cause electric hot water tap imperfect earth, in order to ensure user, can not get an electric shock, be necessary to improve the electrical safety performance of electric hot water tap.
Summary of the invention
In view of the above problems, the utility model provides a kind of safe electric hot water tap, and it can guarantee the use safety under the extreme cases such as user reduces at tap water resistance, ground connection is bad.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of electric hot water tap, comprise main body, circuit control device, described main body comprises fluid passage, electrothermal body, described electrothermal body is located between the fluid input of fluid passage and fluid output and is electrically connected described circuit control device, described fluid passage is also provided with two resistance test points, two resistance test points lay respectively at electrothermal body both sides, described circuit control device compares the fluid resistance T between preset resistance D1 and two resistance test points, when fluid resistance T > preset resistance D1, the current supply circuit of closed electrical hot body, in described fluid passage, be also provided with zero-potential point, described electrothermal body is near one end electric connection of power supply live wire of zero-potential point, electrothermal body the other end electric connection of power supply zero line.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is by arranging two resistance test points, and compare fluid resistance T and preset resistance D1 by current control division, when fluid resistance T > preset resistance D1, the current supply circuit of closed electrical hot body, so can guarantee to start electric hot water tap in the normal situation of fluid resistance T, avoid abnormal low and do not have voltage dividing potential drop and do the used time and start the security incident that electric hot water tap causes at fluid resistivity; Moreover, electrothermal body is near one end electric connection of power supply live wire of zero-potential point, and then along fluid flow direction, in fluid passage, voltage distribution is zero-power line end, power firestreak end, zero-potential point successively, or be zero-potential point, power firestreak end, zero-power line end successively, that is fluid input, fluid output be the no-voltage end of guaranteeing user's personal safety all the time, greatly improved electrical safety performance.
Preferably, described circuit control device is also provided with a preset resistance D2, and preset resistance D2 is greater than preset resistance D1, when preset resistance D2 > fluid resistance T > preset resistance D1, and the current supply circuit of closed electrical hot body.
Preferably, zero line wiring terminal is set in described fluid passage, described zero line wiring terminal is electrically connected to zero-power line.
Preferably, described zero line wiring terminal is arranged between fluid input and electrothermal body and closes on the position of electrothermal body.
Preferably, described electrothermal body is naked silk heating unit.
Accompanying drawing explanation
Fig. 1 is a kind of electric hot water tap embodiment of the utility model schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
With reference to figure 1, a kind of fluid heater, comprise main body 10, circuit control device 20, described main body 10 comprises fluid passage 103, electrothermal body 104, described electrothermal body 104 is located between the fluid input 101 of fluid passage 103 and fluid output 102 and is electrically connected described circuit control device 20, in described fluid passage 103, be also provided with the resistance test point 105 being electrically connected with circuit control device 20, 106, in the present embodiment, described resistance test point 105, 106 lay respectively at the both sides of electrothermal body 104, described electrothermal body 104 is naked silk heating units, certain described electrothermal body 14 is ceramic plate electric heating member also, the heating unit of other types such as heating tube electric heating member, the fluid resistance T that described circuit control device 20 comparison preset resistance D1 and resistance test point are 105,106, when fluid resistance T > preset resistance D1, the current supply circuit of closed electrical hot body 104.The setting of described preset resistance D1 is proportional to the fluid distance of 105,106 of resistance test points, the fluid cross-section that is inversely proportional to 105,106 of resistance test points is long-pending, certainly also depend on the fluid resistivity in described fluid passage 103, certainly, under normal conditions, fluid resistivity has the scope of a fluctuation, such as the water quality specific resistance in somewhere is not to fix a numerical value conventionally, and can be a number range, now, to be on the safe side, those skilled in the art can choose less resistivity value, to determine predetermined resistance D1.
So, only have in fluid passage 103 when fluid resistivity is normal, it is extremely low that the fluid resistance T that resistance test point is 105,106 can not become, and now starts electrothermal body 104, fluid in fluid passage 103 has just played enough voltage dividing potential drop effects, has guaranteed user's personal safety.
In addition, be also provided with zero-potential point in fluid passage 104, described electrothermal body 104 is near one end 1041 electric connection of power supply live wires 107 of zero-potential point, electrothermal body 104 the other end 1042 electric connection of power supply zero lines 108.In the present embodiment, in described fluid passage 104, zero line wiring terminal 109 is set, described zero line wiring terminal 109 is electrically connected to zero-power line 108, and so, this zero line wiring terminal 109 is zero-potential point.Certainly, also can otherwise in fluid passage 104, zero-potential point be set, not repeat them here.
The above is only preferred implementation of the present utility model, should be understood that, for those skilled in the art, not departing under the prerequisite of the utility model principle, to the technological scheme of model utility, can do the improvement of some applicable actual conditions.Therefore, protection domain of the present utility model is not limited to this, and those of skill in the art are any to be included within the utility model protection domain based on non-material change in technical solutions of the utility model.
Claims (5)
1. an electric hot water tap, comprise main body, circuit control device, described main body comprises fluid passage, electrothermal body, described electrothermal body is located between the fluid input of fluid passage and fluid output and is electrically connected described circuit control device, it is characterized in that, described fluid passage is also provided with two resistance test points, two resistance test points lay respectively at electrothermal body both sides, described circuit control device compares the fluid resistance T between preset resistance D1 and two resistance test points, when fluid resistance T > preset resistance D1, the current supply circuit of closed electrical hot body; In described fluid passage, be also provided with zero-potential point, described electrothermal body is near one end electric connection of power supply live wire of zero-potential point, electrothermal body the other end electric connection of power supply zero line.
2. a kind of electric hot water tap according to claim 1, it is characterized in that, described circuit control device is also provided with a preset resistance D2, preset resistance D2 is greater than preset resistance D1, when preset resistance D2 > fluid resistance T > preset resistance D1, the current supply circuit of closed electrical hot body.
3. a kind of electric hot water tap according to claim 1, is characterized in that, zero line wiring terminal is set in described fluid passage, and described zero line wiring terminal is electrically connected to zero-power line.
4. a kind of electric hot water tap according to claim 3, is characterized in that, described zero line wiring terminal is arranged between fluid input and electrothermal body and closes on the position of electrothermal body.
5. according to a kind of electric hot water tap described in claim 1 to 4 any one, it is characterized in that, described electrothermal body is naked silk heating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519407.6U CN203431297U (en) | 2013-08-25 | 2013-08-25 | Electric heating faucet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320519407.6U CN203431297U (en) | 2013-08-25 | 2013-08-25 | Electric heating faucet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431297U true CN203431297U (en) | 2014-02-12 |
Family
ID=50060334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320519407.6U Expired - Fee Related CN203431297U (en) | 2013-08-25 | 2013-08-25 | Electric heating faucet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431297U (en) |
-
2013
- 2013-08-25 CN CN201320519407.6U patent/CN203431297U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20140825 |
|
| EXPY | Termination of patent right or utility model |