CN2570694Y - Compact electric shock preventing device for electric water heater - Google Patents
Compact electric shock preventing device for electric water heater Download PDFInfo
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- CN2570694Y CN2570694Y CN 02233893 CN02233893U CN2570694Y CN 2570694 Y CN2570694 Y CN 2570694Y CN 02233893 CN02233893 CN 02233893 CN 02233893 U CN02233893 U CN 02233893U CN 2570694 Y CN2570694 Y CN 2570694Y
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- water
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- coupling
- electric shock
- electric heater
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Abstract
The utility model discloses a compact electric shock preventing device for an electric water heater, which is characterized in that a water inlet joint and a water outlet joint of a water heater host machine and a water mixing device are respectively provided with an exterior injection mould joint in which a longer interpolation pipe is inserted to form a water-flow channel; when the water-flow channel is full of water, the resistance value at both ends of the water-flow channel is greater than 1 megohm. In this way, when in the event of electric leakage and unreliable ground wire, people are not to be damaged by electric shock. Simultaneously, the utility model has small-sized structure, and the utility model has the advantages of compact structure and large connecting rigidity.
Description
The utility model discloses a kind of compact anti-electric shock apparatus of electric heater, belong to household electrical appliance technical field.
Existing electric heater, generally be by electrothermal tube or other electric heating method water to be heated to higher temperature from inflow temperature with 220 volts of civil powers to convert through hot and cold water and flow out the use for the people after closing in metal water drum, the cold water that is made of metal, hot water joint directly are welded on the water drum.According to the Electrical Safety standard code, metal materials such as the water drum of water heater, outer cover, water-in and water-out adapter must link to each other with the earth connection in the power line, and the earth connection in the power line links to each other with the earth through socket.Ground connection must be reliable.In normal use, the ground wire no current.When electric leakage took place water heater contingency, electric current flowed directly into the earth by low-resistance ground wire, thereby guaranteed human body safety.
In fact, a big chunk that has house now is not installed good earthing or grounding means when building originally.In addition, also have some sockets to cause the socket loose contact, tend to cause the empty phenomenon of inserting of ground wire during use owing to designing, produce lack of standardization or often plugging and unplugging.When electric leakage took place water heater contingency, high voltage then may spread out of through conductor materials such as entery and delivery ports human body is caused electric shock like this.
In order to prevent the generation of above-mentioned electric shock accidents, people connect the one section long water-filled pipe of being made by insulating materials between water heater water-in and water-out joint and mixed water valve, utilize the resistance characteristic of water, make and under water-filled condition, have bigger resistance value between water heater water-in and water-out joint and the water-mixing valve, such as 1 megaohm, when ground wire is unreliable just in case water heater leaks electricity like this, because the existence of this big resistance, to significantly reduce from the electric current of human body process, thereby guarantee personal safety.
Yet, the weak point of above-mentioned solution is, because resistance to water-flow can not be too big, pipe can not be too thin, reach bigger resistance value, tube length is just very long, dish is bulky in the water heater bottom, and is neither attractive in appearance, again waste material, and it is too poor to cause main frame to be connected rigidity with water-mixing valve, damages easily.
The purpose of this utility model is exactly compact anti-electric shock apparatus and the manufacture method thereof that a kind of electric heater will be provided, use this device, unreliable or do not have ground wire and also can prevent the generation of electric shock accidents under the condition that water heater leaks electricity electric heater ground connection, thereby guarantee human body safety, overcome existing electric heater safety device above shortcomings simultaneously again.
Below with reference to accompanying drawing the technical solution of the utility model is described.
Accompanying drawing 1 is by the technical solution of the utility model made compact anti-electric shock apparatus and electric heater
Connection diagram.
Accompanying drawing 2 is by the made structural representation of compact anti-electric shock apparatus when making monomer coupling, inner-intubation structure of the technical solution of the utility model.
Being described as follows of each symbol among the figure:
1-electric heater main frame water-in and water-out joint, 2-compact anti-electric shock apparatus, 3-mixed water valve, the coupling of 4-compact anti-electric shock apparatus, 5-interpolation pipe, 6-gasket seal, 7-tube chamber.Arrow is represented water (flow) direction among the figure.
With reference to accompanying drawing, compact anti-electric shock apparatus of the present utility model is made of with the interpolation pipe [5] that places in the water heater liner and link to each other with coupling [4] the coupling that is connected in the water heater entery and delivery port [4], and coupling [4] is made by the thermoplastic of polypropylene, nylon, the sour fat of poly-charcoal, modification composite plastic etc. or other ability high temperature more than 85 ℃ with interpolation pipe [5]; Coupling [4] injection mo(u)lding is made Internal Pipe Thread in coupling [4] with the upper end that the electric heater entery and delivery port is connected, and when being connected with the electric heater entery and delivery port, therebetween is with gasket seal [6]; Coupling [4] is made external pipe thread with the lower end that mixed water valve links to each other; Make the upwards longer pipe chamber [7] of extreme direction extension in the middle of coupling [4], interpolation pipe [5] tightly is inserted in the tube chamber [7] or tightly is enclosed within on the tube chamber [7], and interpolation pipe [5] also can be connected with tube chamber [7] melting welding; The horizontal horizontal area and the length of connecing that connects area and length and tube chamber [7] of interpolation pipe [5] should satisfy when being full of water after both cooperate, and meets the requirements of resistance value.
If suppose that the resistance value after being full of water is 1 megaohm, then according to Ohm's law as can be known, even leakage voltage is 220 volts, the electric current that acts on human body also has only about 0.25 milliampere, therefore can not cause electric shock to the people.
According to the technical solution of the utility model, as the resistance value that is full of behind the water is set in 5 megaohms, then be no more than 0.1 milliampere just in case act on people's maximum current during electric leakage.
Under the normal temperature, the resistivity of ordinary tap water is about 3000 Europe centimetre, as set water stream channel and be full of that the resistance value at two ends is 1 megaohm behind the water, when interpolation pipe [5] passage section was internal diameter 8mm circle, its length was about 1.6 meters, when internal diameter is 4mm, its length is about 0.3 meter, consider that the resistance value at two ends is taken into account the resistance to water-flow characteristic simultaneously behind the water-filling, the transversal flow area of interpolation pipe [5] is advisable to be no more than 2 square centimeters, and length of run is not more than 4 meters and is advisable.
The compact anti-electric shock apparatus of making by technical scheme described in the utility model can be made into haplotype, is loaded on respectively between water-in and water-out joint and the mixed water valve, also can be made into the couple structure of disjunctor, and when making couple structure, the upper end connection is equipped with traveling nut.
Can be at its outer mask with multi-form outer cover by the compact anti-electric shock apparatus that technical scheme described in the utility model is made in order to satisfy needs attractive in appearance.
Compact anti-electric shock apparatus by technical scheme described in the utility model is made can connect a common electroscope circuit at the water stream channel two ends, and when electric leakage and ground wire when unreliable, neon tube is luminous, plays the electric leakage warning function.
By the compact anti-electric shock apparatus that technical scheme described in the utility model is made, it is multi-form that its external form can be made square, rectangle of circle, ellipse, band fillet etc.
By the compact anti-electric shock apparatus that technical scheme described in the utility model is made, coupling [4] and interpolation pipe [5] also can unite two into one directly injection molded.
In the technical solution of the utility model, because therefore interpolation pipe [5] is built in the water heater liner,, in the course of the work, interpolation pipe [5] only bears very little flow resistance, does not bear work water pressure, therefore, very easily satisfy the requirement of strength under hot conditions, and have the long life-span.On the other hand because interpolation pipe [5] places inner bag, just coupling [4] part that exposes, therefore than common around the pipe method, volume and material consumption descend more than 90%, structure is very compact; Because coupling is very short, thereby has improved coupling stiffness, avoided rocking and damage in the use.
Claims (7)
1, a kind of compact anti-electric shock apparatus of electric heater, it is characterized in that being made of with the interpolation pipe [5] that places in the water heater liner and link to each other with coupling [4] the coupling that is connected in the water heater entery and delivery port [4], coupling [4] is made by the thermoplastic of polypropylene, nylon, the sour fat of poly-charcoal, modification composite plastic etc. or other ability high temperature more than 85 ℃ with interpolation pipe [5]; Coupling [4] injection mo(u)lding is made Internal Pipe Thread in coupling [4] with the upper end that the electric heater entery and delivery port is connected, and when being connected with the electric heater entery and delivery port, therebetween is with gasket seal [6]; Coupling [4] is made external pipe thread with the lower end that mixed water valve links to each other; Make the upwards longer pipe chamber [7] of extreme direction extension in the middle of coupling [4], interpolation pipe [5] tightly is inserted in the tube chamber [7] or tightly is enclosed within on the tube chamber [7], and interpolation pipe [5] also can be connected with tube chamber [7] melting welding; The horizontal horizontal area and the length of connecing that connects area and length and tube chamber [7] of interpolation pipe [5] should satisfy when being full of water after both cooperate, and meets the requirements of resistance value.
2, press the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is characterized in that considering that the resistance value at two ends is taken into account the resistance to water-flow characteristic simultaneously behind the water-filling, the transversal flow area of interpolation pipe [5] is advisable to be no more than 2 square centimeters, and length of run is not more than 4 meters and is advisable.
3, press the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is characterized in that can be made into haplotype, be loaded on respectively between water-in and water-out joint and the mixed water valve, also can be made into the couple structure of disjunctor, when making couple structure, the upper end connection is equipped with traveling nut.
4, by the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is characterized in that can be at its outer mask with multi-form outer cover in order to satisfy needs attractive in appearance.
5, by the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is characterized in that connecting a common electroscope circuit at the water stream channel two ends, when electric leakage and ground wire when unreliable, neon tube is luminous, plays the electric leakage warning function.
6, by the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is multi-form to it is characterized in that its external form can be made the square of circle, ellipse, band fillet, rectangle etc.
7, by the compact anti-electric shock apparatus of the described a kind of electric heater of claim 1, it is characterized in that coupling [4] and interpolation pipe [5] also can unite two into one directly injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233893 CN2570694Y (en) | 2002-05-19 | 2002-05-19 | Compact electric shock preventing device for electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02233893 CN2570694Y (en) | 2002-05-19 | 2002-05-19 | Compact electric shock preventing device for electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2570694Y true CN2570694Y (en) | 2003-09-03 |
Family
ID=33708908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02233893 Expired - Fee Related CN2570694Y (en) | 2002-05-19 | 2002-05-19 | Compact electric shock preventing device for electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2570694Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476779A (en) * | 2009-01-17 | 2009-07-08 | 党路明 | Compact anti-electric shock apparatus for electricity-related water system and manufacturing method thereof |
| CN104019555A (en) * | 2014-06-17 | 2014-09-03 | 广东自助者管道科技有限公司 | System for optimizing cold and hot water supply pipeline of domestic water heater |
| CN106766120A (en) * | 2017-01-04 | 2017-05-31 | 宁波帅康热水器有限公司 | It is a kind of from anti-electric and early warning gas heater |
-
2002
- 2002-05-19 CN CN 02233893 patent/CN2570694Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476779A (en) * | 2009-01-17 | 2009-07-08 | 党路明 | Compact anti-electric shock apparatus for electricity-related water system and manufacturing method thereof |
| CN104019555A (en) * | 2014-06-17 | 2014-09-03 | 广东自助者管道科技有限公司 | System for optimizing cold and hot water supply pipeline of domestic water heater |
| CN104019555B (en) * | 2014-06-17 | 2017-03-08 | 广东自助者管道科技有限公司 | Pot-type boiler hot and cold water water supply line optimizes system |
| CN106766120A (en) * | 2017-01-04 | 2017-05-31 | 宁波帅康热水器有限公司 | It is a kind of from anti-electric and early warning gas heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |