CN2884037Y - Highly safety electric water heater - Google Patents
Highly safety electric water heater Download PDFInfo
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- CN2884037Y CN2884037Y CN 200520110984 CN200520110984U CN2884037Y CN 2884037 Y CN2884037 Y CN 2884037Y CN 200520110984 CN200520110984 CN 200520110984 CN 200520110984 U CN200520110984 U CN 200520110984U CN 2884037 Y CN2884037 Y CN 2884037Y
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Abstract
The utility model relates to a high security electric water heater which prevents creepage resulting from various reasons, comprising a casing, an inner chamber, an electric heater, a temperature controller, a T-shaped multi-fork inlet calandria, an inner lining pipe of the inlet pipe head, an outlet outer bushing, an outlet inner lining pipe, a screw joint of the inlet pipe, a screw joint of the outlet pipe, a plastic cover, a plurality of insulating isolation pad, a plurality of screw head insulating plastic cases, an acoustic-optic creepage alarm and other components. The water heater is characterized in that the T-shaped multi-fork inlet calandria, the inner lining pipe of the inlet pipe head, the outlet inner lining pipe, the screw joint of the inlet pipe and the screw joint of the outlet pipe are all made from insulating plastic; the inlet pipe and the outlet pipe are all arranged inside the inner chamber; the square ratio of the distance of the inlet of the inlet inner lining pipe to the outlet of the T-shaped multi-fork inlet calandria and the distance of the inlet of the outlet inner lining pipe to the outlet of the outlet inner lining pipe to the radius of the water pipe should reach to L>45 r<2>, thus the reduced creepage electric current is within the security value of human body; furthermore, the isolation pads are arranged between the inner pothook and the casing and the outer pothook, the pothook screws are sleeved with the insulating cases to isolate creepage.
Description
Technical field:
The utility model relates to a kind of electric heater, is to having the improvement of electric heater structure now at anti-creeping secure context.
Background technology:
Existing electric heater adopts following two modes substantially in anticreep mode: at first be that ground connection termination or earth connection are housed on the electric heater, link together with user's power ground line, just in case electric heater itself leaks electricity, leakage current is introduced into the earth by ground wire, guarantees user's safety; Another kind is except earth connection is housed; installing earth leakage protective device on the electric heater again, when electric leakage takes place electric heater self contingency, and earth connection is unreliable; when leakage current surpassed setting, its meeting automatic trip was cut off the electricity supply and is guaranteed user's life security.But all there is the not really cocksure problem of security in above these two kinds of earth leakage protective modes; because the still all little at present reliable several factors of user's source appliance earth connection causes imperfect earth; and earth leakage protective device also have self reliability and moist toilet environment for use to the influence of its reliability, often misoperation takes place so that malfunctioning also.Moreover; more than the prerequisite that ensures safety really of two kinds of measures be user's power supply wiring polarity must be correctly, reliable, firmly: promptly fire, zero, three-wayly must contraposition connect appropriate; if random wiring; then can not shield; earth leakage protective device be can not jump automatically disconnected; especially work as live wire and ground wire and connect a time-out, allow the people drench the water that jet flow is come out in the water heater, the people is got killed.Therefore solving electric heater has been the task of top priority in anticreep existing above-mentioned defective.
Summary of the invention:
There is above-mentioned anticreep defective in order to overcome electric heater, the utility model provides a kind of high safe electric heater, it can not only solve because of electric heater user earth connection unreliable, or the electric heater faults itself electric leakage takes place and earth leakage protective device malfunctioning do not jump rapidly disconnected, the serious consequence of being brought for the user between the moment; And when user's power supply wiring incorrect, fire, zero, three-way random wiring or and when connecing, can not move even at this moment earth leakage protective device is intact yet.The utility model but still can make the electric heater shell not charged, and in the electric heater jet flow but not electric people of the charged water of this meeting that comes out, make leakage current reduce to the degree in good health to human body.For reaching this purpose, the technical solution of the utility model is: it comprises that shell, inner bag, electric heater, temperature controller, water inlet pipe head, water outlet pipe head, the many staggered tubes of water inlet T shape, water inlet tube head internal lining pipe, water outlet outer tube, water outlet internal lining pipe, water inlet pipe bolted joint, outlet pipe bolted joint, water inlet pipe are moulded lasso, outlet pipe is moulded lasso, inner bag flange port, insulation cover cap, inner hanging hook, outer hanging hook, insulation isolating pad, screw terminal ambroin cover, acousto-optic leakage alarm etc.It is characterized in that: the many staggered tubes of water inlet T shape are insulation tube with water inlet tube head internal lining pipe, both connect by internal and external threads or the gluing cover that connects is inserted to one and is the multiple tube of intaking, and many staggered tubes of water inlet T shape lower end has several apopores, enter after the top flows into the water inlet flow channel of the many staggered tubes of T shape to allow running water enter the mouth, and then each bifurcated outlet passage of flowing through allows the running water outflow enter in the internal bladder cavity via outlet passage lower end delivery port from the tube head internal lining pipe of intaking; The many staggered tubes of this water inlet T shape place in the internal bladder cavity.
Because of electric heater is intake by the inner bag bottom, so water inlet pipe can only be very short, and during anti-electric heater electric leakage just in case the inner bag water inlet pipe leaks or inner bag in aqueous reflux the time allow the outer seepage of water of band electric leakage that the user is got an electric shock, the event water inlet pipe also must be done very longly and also must can only intake from the inner bag bottom during water inlet, therefore the utility model is designed to the long many staggered tubes of T shape (as the comb or the beam tube of bundle nation formula rocket shape) with water inlet pipe, its center is the water inlet pipe water inlet flow channel, it the center water inlet pipe around (all around or both sides, Fig. 2, Fig. 3), two arranged side by side (or more than two) are with long downcomer, subsea end respectively has the water outlet spout under these, running water water inlet flows into each breeches pipe through the shunting prong and is ejected by adjacent water heater bottom water outlet spout then when the upper top of this pipe, make into the flowing flux of the many staggered tubes of water T shape do to such an extent that long enough obtains great resistance with this, after making the leakage current choked flow, reduce in the human body safe range.
The water outlet internal lining pipe is also made by insulating materials, and it is by after inserting the water outlet outer tube and maybe this two pipes injection moulding being become an integral body, again through inserting inner bag metal water outlet pipe head in internal bladder cavity.
Water inlet tube head internal lining pipe water inlet port and water outlet internal lining pipe water outlet port all have a collar flange, are stuck in metal water inlet pipe head and water outlet pipe head inlet outer, in case the water-in and water-out internal lining pipe inserts the back drop in inner bag; Cover is lined with O-ring seal in case leak between both contact-making surfaces of inner and outer pipes, and by water inlet pipe insulator bolted joint and outlet pipe insulator bolted joint respectively spinning on metal water inlet pipe head and water outlet pipe head, to intake tube head internal lining pipe and water outlet internal lining pipe fixed separately, and it is also in good health to prevent that also the people touches the insulation bolted joint.Described water inlet tube head internal lining pipe is connected the back one and is the water inlet multiple tube with water inlet T shape many staggered tubes, be L＞45r with the water inlet separately of its water outlet internal lining pipe to the length L of delivery port with managing inside radius r duplicate ratio
2, this is to have resistance according to water itself, the characteristic of resistance is that the long more then resistance of the more little length of conductor area is big more, the more little principle of the big more then electric current of resistance.As L＞45r
2The time, both be the hardest water, its water power resistance is to the weak current below the 30mA of human body safety with electric current choked flow in the charged water enough, just allows the water resistance of insulation in the bushing pipe as anti-creeping choked flow isolated component.
Because human body is not to be can not bear electric shock fully, human body bears or a place of safety is arranged electric current.State such as West Europe and Japan is decided to be this place of safety in the 30mAS (30 milliampere-second), promptly suppose when human body touches the electric current of 30mA and in 1 second it is broken away from, be non-hazardous to the people so, and usually when human body touches low current, the physiological natural reaction limbs that can bounce back rapidly in less than 1 second (being generally tens of milliseconds to hundreds of milliseconds) are broken away from the electric shock point.Therefore no matter which kind of reason to make the electric heater electric leakage when, at this moment water that comes out in the electric heater and water inlet pipe and water outlet pipe end connector if not charged (leakage current if＜below the 30mA, then human body is not had harm, it is the smaller the better to leak electricity certainly), then to just safety just of user.The utility model just just designs under this prerequisite based on making the water that comes out in the electric heater charged hardly (leakage current＜30mA following) and electric heater shell entire body being insulated.Because though water can conduct electricity, but the resistance of water self is also very big, as long as allow the electric heater inlet tube and outlet tube be that insulating materials is made, and carefully grow, allow the water that flows out from the inside form long thread, make resistance on the water route greatly to allowing the leakage current＜30mA that under routine work voltage, (is generally 220V, 380V) and passes through get final product.According to the Ohm's law U=IR of classics, resistance (R value) is big more, and then electric current is more little, and the size of resistance self is decided by what conductor material resistivity (ρ) and sectional area (S) and conductor length (L) decided, according to formula R=L ρ/S, when then earlier determining S, L=RS/ ρ so.Certainly, resistivity of water (ρ value) is not an absolute value here, and itself also can also have difference in size along with the difference of water quality (hard softness).Here the ρ value of water can be got minimum, about 1000 Ω .cm (the hardest water quality), domestic, electric water heater voltage is generally the 220V alternating current, design with regard to passable (if 380V with this, also design in like manner), as long as the electric heater water inlet pipe and water outlet pipe is interior to be insulator so allow, and manages interior diameter and do for a short time as far as possible, just the pipeline long enough is passable.
The utility model also fills up with the insulation isolation pad at inner container of electric water heater metal hanger and shell folder, and the screw terminal inner plane pad of the connecting screw that connects as one at metal outer hanging hook and inner hanging hook is with screw terminal ambroin cover, in case in the inner bag just in case charged water draws electricity to shell by interior outer hanging hook and connecting screw.
In addition, the utility model also is equipped with the acousto-optic electric leakage alarm device, with at the electric heater metal inner tube just in case can be when charged in the charged or water with sound and light alarm.
Description of drawings:
Fig. 1 is the high safe electric water heater general structure of a utility model profile.
Fig. 2 is the A-A water inlet pipe assembly partial enlarged drawing of Fig. 1.
Fig. 3 is the B-B outlet pipe assembly partial enlarged drawing of Fig. 1.
Fig. 4 is the side sectional view of the high safe electric water heater of the utility model.
Fig. 5 is the local amplification view of the inside and outside hook assembly of the C-C of Fig. 4.
1. shell, 2. insulating foam layer, 3. inner bag, 4. electric heater, 5. water inlet pipe head, 6. water outlet pipe head, 7. water outlet internal lining pipe, 8. water outlet outer tube, 9. water outlet bushing pipe annular lip mouth, 10. outlet pipe bolted joint, the mouth 11. outlet pipe is spirally connected, 12. water inlet pipe bushing pipe annular lip mouth, 13. water inlet pipe bolted joint, the mouth 14. water inlet pipe is spirally connected, 15. the many staggered tubes of water inlet T shape, 16. water inlet tube head insulated liner pipe, 17. many staggered tubes of water inlet T shape water outlet spray orifice, 18. many staggered tubes of water inlet T shape water inlet flow channel, 19. rubber cushion, 20. water inlet pipe is moulded lasso, 21. outlet pipe is moulded lasso, 22. inner bag flange port, 23. inner bag inner hanging hook, 24. outer hanging hook, 25. interior outer hanging hook connecting screw, 26. insulation isolating pad, 27. screw terminal ambroin cover, 28. insulation cover cap, 29. temperature controller, 30. the many staggered tubes shuntings of water inlet T shape prong, 31. many staggered tubes of water inlet T shape bifurcated outlet passage, 32. seal washer, 33. O-ring seal, 34. O-ring seal, 35. O-ring seal, 36. comb props up breeches pipe, 37. acousto-optic leakage alarm, 38. holding wire metal clasp on the alarm, 39. holding wire metal clasp under the alarm.
The specific embodiment:
Shown in accompanying drawing 1, accompanying drawing 3, the technical scheme of the utility model embodiment is: water inlet tube head internal lining pipe (16) is an insulation tube with the water inlet many staggered tubes of T shape (15), there are several spray orifices (17) each breeches pipe lower end of the water inlet many staggered tubes of T shape (15), enter after the water inlet flow channel (18) of the many staggered tubes of T shape (15) of intaking by water inlet tube head internal lining pipe (16) as running water, and then enter comb shunting prong (30), branch to the outlet passage (31) of each breeches pipe of comb (36) again, inject in the internal bladder cavity by water outlet spray orifice (17) ejection separately at last.Water inlet tube head internal lining pipe (16) injects in the water inlet pipe head (5) earlier, it will be grown than water inlet pipe head (5), after the many staggered tubes of T shape (15) of will intaking are then put inner bag (3) into by inner bag flange port (22), with the water inlet tube head internal lining pipe (16) both be inserted in mutually, by screw thread screw or bonding by adhesive be a multiple tube form.Water inlet tube head internal lining pipe (16) lower port has annular lip mouth (12), be stuck in into outside the water pipe head (5), be lined with O-ring seal (19) between both contact-making surfaces at this, on the outerplanar of water inlet tube head internal lining pipe (16) annular lip mouth (12), also be lined with O-ring seal (32), and then by the water inlet pipe bolted joint (13) that is all insulator with its spinning in water inlet pipe head (5), constitute the water inlet assembly.
The water inlet path is: running water from the import of water inlet pipe bolted joint (13) enter back → water inlet tube head internal lining pipe (16) → water inlet T shape many staggered tubes water inlet flow channel (18) → many staggered tubes of water inlet T shape divide prong (30) → many staggered tubes of water inlet T shape bifurcated go out water stream channel (31) → current via T shape many staggered tubes water outlet spray orifice (17) → inner bag (3) chamber that intakes in.
Above-mentioned current route should satisfy L＞45r
2Requirement.Adopting said structure to increase flow path length has increased water resistance greatly, thereby reaches safe requirement.
Referring to accompanying drawing 1, shown in the accompanying drawing 2, its elongated water outlet internal lining pipe (7) is an insulation tube, its lower port has annular lip mouth (9), at first for strengthening the rigidity of elongated water outlet internal lining pipe, put the water outlet outer tube (8) of a thin-wall metal system earlier in its outside, this water outlet multiple tube is welded in water outlet pipe head (6) on the inner bag (3) through insertion, and deeply place in inner bag (3) chamber, lower end annular flange openings (9) at water outlet internal lining pipe (7) is stuck in outside the water outlet pipe head (6), between both contact-making surfaces, be lined with O-ring seal (33), also be lined with O-ring seal (34) in annular lip mouth outer face, then by outlet pipe bolted joint (10) spinning of insulator on water outlet pipe head (6), constitute the outlet pipe assembly.
The water outlet flow path is: hot water is by suitable for reading the entering of water outlet internal lining pipe (7) → by the down outlet pipe of outlet → outlet pipe bolted joint (10) mouthful (11) outflow that is spirally connected of water outlet internal lining pipe (7) in inner bag (3) chamber.Should make L＞45r equally
2
Shown in accompanying drawing 1, insulation cover cap (28) then is stamped in the space between water inlet pipe bolted joint (13) and outlet pipe bolted joint (10), and is attractive in appearance and safer to show.
Shown in accompanying drawing 2, electric leakage audible-visual annunciator (37) is contained in the insulation cover cap (28), holding wire metal clasp (38) clamps and is connected inner bag metal water inlet pipe head (5) upper end on the one end, holding wire metal clasp (39) clamps and to be connected water inlet pipe and to be spirally connected on mouthful (14) under the other end, constitute the electric leakage signal sampling loop with this, report to the police by audible-visual annunciator (37) then.
Shown in accompanying drawing 4, accompanying drawing 5, be welded in and be lined with insulation isolating pad (26) between the inner hanging hook (23) of inner bag (3) and the shell (1), go up cover in the hook connecting screw (25) that metal outer hanging hook (24) and inner hanging hook are connected as one and be lined with the screw terminal insulation and mould cover (27), prevent that thus inner bag (3) from going up just in case charged water draws electric to shell by inner hanging hook and connecting screw.
Claims (10)
1. high safe electric water heater, it comprises shell, inner bag, electric heater, temperature controller, the water inlet pipe head, water inlet tube head internal lining pipe, the many staggered tubes of water inlet T shape, the water outlet pipe head, the water outlet outer tube, the water outlet internal lining pipe, the water inlet pipe bolted joint, the outlet pipe bolted joint, water inlet pipe is moulded lasso, outlet pipe is moulded lasso, the inner bag flange port, the insulation plastics cover, inner hanging hook, outer hanging hook, the insulation isolating pad, screw terminal ambroin cover, audible-visual annunciator, it is characterized in that: described water inlet tube head internal lining pipe, the many staggered tubes of water inlet T shape, the water outlet internal lining pipe, the water inlet pipe bolted joint, outlet pipe is spirally connected and first-classly is non-conductive ambroin and makes many staggered tubes of water inlet T shape and water inlet tube head internal lining pipe, water outlet outer tube and water outlet internal lining pipe all place in the inner bag cavity.
2. according to the described high safe electric water heater of claim 1, it is characterized in that: water inlet T shape many staggered tubes place in the internal bladder cavity, it with inject inner bag metal water inlet pipe in front the water inlet tube head internal lining pipe cover of head insert to bond or screw and be integral into the straight formula compound comb that refluxes with internal and external threads; Lower end at many each breeches pipes of staggered tubes of water inlet T shape has the water outlet spray orifice; The lower port of water inlet tube head internal lining pipe has the internal diameter slightly big collar flange mouth of a diameter than metal water inlet pipe head, and gland is in metal water outlet pipe head import outer.
3. according to the described high safe electric water heater of claim 1, it is characterized in that: the central authorities of the many staggered tubes of water inlet T shape are its main water inlet tube, the both sides of this main water inlet tube or many of parallel arranged breeches pipe all around, the main water inlet tube water inlet flow channel T of having shape suitable for reading is propped up fork shunting prong, and each breeches pipe has outlet passage, and its each fork lower end has the water outlet spout.
4. according to the described high safe electric water heater of claim 1, it is characterized in that: dress is welded in the interior plant thin-wall metal water outlet outer tube of metal water outlet pipe head on the inner bag, ambroin water outlet liner pipe box is inserted in the water outlet outer tube, the lower port of water outlet internal lining pipe has the internal diameter slightly big collar flange mouth of a diameter than metal water outlet pipe head, and gland is in metal water outlet pipe head import outer.
5. according to the described high safe electric water heater of claim 1, it is characterized in that: overlap between water inlet tube head internal lining pipe and the metal water-in and water-out pipe head end mouth contact-making surface corresponding separately respectively and be lined with O-ring seal with water outlet internal lining pipe lower end ring-type flange openings; Corresponding separately spinning is on metal water inlet pipe head and water outlet pipe head respectively for water inlet pipe bolted joint, outlet pipe bolted joint, and will intake internal lining pipe and water outlet internal lining pipe are pressed abd fixed on in the water pipe head and water outlet pipe head.
6. according to the described high safe electric water heater of claim 1, it is characterized in that: water inlet pipe bolted joint and outlet pipe bolted joint are ambroin and make, mechanical strength for strengthened thread, separate embedding and injection molding up and down as inserts when the position of screw thread up and down of bolted joint is the metal fabrication injection moulding and go on the bolted joint plastomer, make the people can touch the position and still be insulator.
7. according to the described high safe electric water heater of claim 1, it is characterized in that: one group of described water inlet internal lining pipe, the many staggered tubes of water inlet T shape, with the water outlet internal lining pipe, separately should be at L＞45r from water inlet to the duplicate ratio of pipeline length L between water out and pipe radius r
2, but from L＞16r
2Rise and promptly belong to the rights protection scope.
8. according to the described high safe electric water heater of claim 1, it is characterized in that: be lined with the insulation isolating pad between inner container of electric water heater inner hanging hook and housing contacts face, make that isolated insulation comes between inner bag and the shell; Being used to connect on the screw of outer hanging hook and inner hanging hook cover is lined with the screw terminal insulation and moulds cover; Be nested with respectively between water inlet pipe head, water outlet pipe head and shell socket simultaneously that water inlet pipe is moulded lasso and outlet pipe is moulded lasso.
9. according to the described high safe electric water heater of claim 1, it is characterized in that: the insulating boot lid is stamped at space outerpace position between water inlet pipe bolted joint, outlet pipe bolted joint, cover.
10. according to the described high safe electric water heater of claim 1, it is characterized in that: it has an electric leakage acoustic-optic alarm to place in the insulation cover cap, acoustic-optic alarm sample of signal lead one end clamps by its metal clasp and metal water inlet pipe head or metal outlet pipe and is connected, and other end lead is connected by mouth or the outlet pipe mouth clamping that is spirally connected that is spirally connected of its metal clasp and water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110984 CN2884037Y (en) | 2005-06-11 | 2005-06-11 | Highly safety electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110984 CN2884037Y (en) | 2005-06-11 | 2005-06-11 | Highly safety electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884037Y true CN2884037Y (en) | 2007-03-28 |
Family
ID=37957099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520110984 Expired - Lifetime CN2884037Y (en) | 2005-06-11 | 2005-06-11 | Highly safety electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884037Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294743B (en) * | 2008-06-05 | 2010-06-16 | 陈国栋 | Cold and hot water exchanging and circulating device of water heater |
| CN101988735A (en) * | 2009-07-30 | 2011-03-23 | 博西华电器（江苏）有限公司 | Water heater |
| CN101988744A (en) * | 2010-11-16 | 2011-03-23 | 陈秋华 | Split-type electric insulation wall with detection line for electric water heater |
| CN101988743A (en) * | 2010-11-16 | 2011-03-23 | 陈秋华 | Split electricity isolation wall used for electric water heater |
| CN104515296A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Electric heater having electric leakage detection function |
| CN108180621A (en) * | 2017-12-27 | 2018-06-19 | 九阳股份有限公司 | A kind of electric heater easy to use |
| CN108387005A (en) * | 2018-04-13 | 2018-08-10 | 潘兆铿 | A kind of built-in type electric water heater electricity-preventing wall |
| CN111928483A (en) * | 2020-07-28 | 2020-11-13 | 青岛经济技术开发区海尔热水器有限公司 | Electricity-proof wall water inlet and outlet pipe and water heater |
-
2005
- 2005-06-11 CN CN 200520110984 patent/CN2884037Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294743B (en) * | 2008-06-05 | 2010-06-16 | 陈国栋 | Cold and hot water exchanging and circulating device of water heater |
| CN101988735A (en) * | 2009-07-30 | 2011-03-23 | 博西华电器（江苏）有限公司 | Water heater |
| CN101988744A (en) * | 2010-11-16 | 2011-03-23 | 陈秋华 | Split-type electric insulation wall with detection line for electric water heater |
| CN101988743A (en) * | 2010-11-16 | 2011-03-23 | 陈秋华 | Split electricity isolation wall used for electric water heater |
| CN104515296A (en) * | 2014-11-27 | 2015-04-15 | 国家电网公司 | Electric heater having electric leakage detection function |
| CN108180621A (en) * | 2017-12-27 | 2018-06-19 | 九阳股份有限公司 | A kind of electric heater easy to use |
| CN108387005A (en) * | 2018-04-13 | 2018-08-10 | 潘兆铿 | A kind of built-in type electric water heater electricity-preventing wall |
| CN111928483A (en) * | 2020-07-28 | 2020-11-13 | 青岛经济技术开发区海尔热水器有限公司 | Electricity-proof wall water inlet and outlet pipe and water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150611 Granted publication date: 20070328 |