CN102235752B - Heating device for water heater - Google Patents
Heating device for water heater Download PDFInfo
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- CN102235752B CN102235752B CN 201010165629 CN201010165629A CN102235752B CN 102235752 B CN102235752 B CN 102235752B CN 201010165629 CN201010165629 CN 201010165629 CN 201010165629 A CN201010165629 A CN 201010165629A CN 102235752 B CN102235752 B CN 102235752B
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Abstract
The invention relates to a heating device for a water heater. The device comprises a fixing seat, a heating rod and a metal sleeve piece, wherein the heating rod comprises an exposed position and a concealed position and is combined on the fixing seat; the exposed position and the concealed position are positioned on the two sides of the fixing seat; the metal sleeve piece comprises a combining part, a metal sleeve part and an opening; the combining part and the opening are positioned at the two ends of the metal sleeve part; the combining part is combined with the fixing seat and can be fixed on a barrel body of the water heater; the metal sleeve part is sleeved at the concealed position; water in the barrel body of the water heater can enter the metal sleeve part from the opening, and the water positioned in the metal sleeve part is detained because the volume of the metal sleeve part is smaller than that of the barrel body of the water heater; and the concealed position can reduce the probability of contacting flowing water so as to reduce water scales.
Description
Technical field
The present invention mainly discloses a kind of heater of water heater, refers in particular to a kind of heater that is difficult for the water heater of sediment incrustation.
Background technology
Be provided with heater in the general water heater, utilize heater heating and allow the water in the water heater become hot water by cold water.Therefore general water contains mineral matter and impurity, and when adding hot water, the mineral matter in the water and impurity can generate incrustation scale and be trapped in the surface of water heater inwall and heater gradually.When the surface of heater was subjected to the coating of incrustation scale, incrustation scale can reduce the efficiency of heating surface of heater, and when the efficiency of heating surface of heater was hanged down, the time that can need more to grow can allow cold water become hot water, and makes the time of wait hot water elongated.And need expend the more energy and add hot water, and need to consume the more energy.And when the incrustation scale of the surface deposition of heater was serious day by day, heater must improve heating-up temperature can finish heating work, and heater excessively improves heating-up temperature and probably can cause heter temperature too high and the possibility of burning, exploding arranged.
With reference to Japanese patent laid-open 4-158163 number " electric water heater ", it has disclosed a tank body 1, an electric heater 2, one urban water supply W are set in the tank body 1 insert tank body 1, and hot water supply H is picked out by tank body 1.Urban water supply W can import cold water tank body 1 inside, utilizes electric heater 2 with the cold water heating that imports, and the water after heating forms hot water, hot water is derived by hot water supply H use again.
This electric heater 2 is positioned at single water space inside, electric heater 2 utilizes the electric energy heating and the cold water around the electric heater 2 is heated into hot water, when the water in the tank body 1 is discharged by hot water supply H, urban water supply W can mend in the tank body 1 again, electric heater 2 continues contact cold water and constantly heats cold water, when the water in the tank body 1 does not arrhea when logical, electric heater 2 is attached with incrustation scale easily, and with the heater of temperature/water heater, when electric heater 2 adheres to too much incrustation scale, electric heater 2 has the possibility of blast, and when having adhered to incrustation scale on the electric heater 2, the efficiency of heating surface of electric heater 2 can reduce because between electric heater 2 and the cold water also across incrustation scale, electric heater 2 can't be fully with thermal energy transfer to cold water.
With reference to Figure 10, be the schematic diagram of the heater of existing water heater.It causes the meaningless consume of the energy, the efficiency of heating surface low at aforesaid heater because easily adhering to incrustation scale, and increases the innovation structure of defective improvement such as electricity charge expenditure; The two ends that comprise a heating rod 91 are bent into relative binding end 92, tie in the holder 93 of a tool combined hole and with two binding ends 92 of nut spiral shell knot and fixing the composition and insert, its heating rod 91 coats the high temperature resistant lotus flower drying of one deck nanoscale effect on the bringing-up section surface of holder 93 inboards anti-ly is stained with glutinous layer 94; Be difficult for being stained with glutinous heating rod 91 structures of being piled into incrustation scale and form, be stained with glutinous layer 94 by high temperature resistant lotus-effect is anti-, can allow in heating rod 91 heating processes formed incrustation scale peel off, to be difficult for adhering to, so as to solving the defective of aforementioned Japanese patent.
Just, this heating rod coats on its surface anti-ly is stained with glutinous layer, and need process heating rod again, thisly anti-ly is stained with glutinous layer because utilize the technology of nanometer to coat the outer surface of heating rod, allows the heating rod surface have thinner pore, and is not easy to be stained with glutinous incrustation scale.Therefore, the coating method of this employing nanometer technology is to belong to the technological means of specialty, and makes that the expense of processing is comparatively high, further allows the expense of heater improve, and makes that this technological means can't universalness.
Moreover, anti-being stained with on heating rod surface sticks the thermal effect that adds that layer can have influence on heating rod, heating rod heat conduction fully, and heating rod surface forms anti-glutinous layer and the heating rod surface of being stained with and has formed incrustation scale and all have heater and need excessively to improve heating-up temperature and probably can cause heter temperature too high and the possibility of burning, exploding arranged.
In addition, when heating rod used time one for a long time, anti-be stained with glutinous layer anti-was stained with glutinous effect and can be degenerated gradually, anti-ly was stained with glutinous effect and lost, and when the pore of heating rod occurred gradually, incrustation scale can be deposited on heating rod again.
With the higher heater of this price, the consumer is not easy to accept the meaningless consume of the energy to occur because of sediment incrustation again after heater uses a period of time, the efficiency of heating surface is low, reach defectives such as increasing electricity charge expenditure, therefore thisly do the technology of nanometer coating at heating rod, have above-mentioned bottleneck and can't overcome.
Therefore, the present invention wants to get rid of or alleviate at least the problem that prior art meets with.
Summary of the invention
The technical problem that institute of the present invention desire solves is the defective at the prior art existence, and a kind of heater heating tube of water heater is provided.
The technological means that the present invention mainly improves is: heater of the present invention comprises a holder;
At least one heating rod, it comprises exsertion part and built-in position, and this heating rod is incorporated into this holder, and this exsertion part and this built-in position lay respectively at the both sides of this holder;
A metal external member, it comprises the joint portion, metallic sheath portion and opening, this joint portion and this opening lay respectively at the two ends of this metallic sheath portion, this joint portion is in conjunction with this holder, and the staving of water heater can be fixed in this joint portion, the wall of staving forms and holds the hole, staving has the wall wall relative with it that holds the hole and forms length in the bucket, this metal external member is arranged in holds the hole, sheathed this built-in position of this metallic sheath portion, this opening can allow the interior water of water heater staving enter this metallic sheath portion, and by the volume in this metallic sheath portion less than the volume in the water heater staving, and the length that this metal external member is arranged in the staving appearance hole is slightly less than a barrel interior length, allow and form narrow and small passage between opening and the relative staving wall, and the water in this metallic sheath portion form to be detained, the chance of this built-in position contact flow water can be slowed down and the generation of incrustation scale can be reduced.The water in this metallic sheath portion is heated at this built-in position, water conservancy in this metallic sheath portion improves the temperature of this metallic sheath portion and utilizes heat to conduct the temperature of the water outside this metallic sheath portion of raising with the heat conduction, and this metallic sheath portion of heating up also utilizes the temperature of the water outside this metallic sheath portion of heat conduction raising.
The technological means of the less important improvement of the present invention is, the length at the built-in position of heating rod is less than or equal to this interior ladder retaining edge to the distance between this opening, and can reduce the chance that this built-in position contact is positioned at the water outside this metallic sheath portion, further slow down the chance of this built-in position contact flow water and can reduce the generation of incrustation scale.
Another technological means that will improve of the present invention is, be slightly less than a barrel interior length by ladder retaining edge to the distance between the opening in this metal external member, or the total length of metal external member is slightly less than a barrel interior length, allow and form narrow and small passage between opening and the relative staving wall, and the water that is positioned at this metallic sheath portion form to be detained, the chance of this built-in position contact flow water can be slowed down and the generation of incrustation scale can be reduced.
The present invention's technological means that will improve again is, during the outside deposition incrustation scale of this metallic sheath portion, because this metal external member does not produce the factor of heat from body, make this metal external member can not blast, and this metal external member can change voluntarily for the user, allows the user can be easy to replace new metal external member.
Other purpose, advantage and novel characteristics of the present invention will be more obvious from the following detailed description and related drawings.
Description of drawings
Fig. 1: be the stereo appearance figure of heater first embodiment of water heater of the present invention.
Fig. 2: be the three-dimensional exploded view of heater first embodiment of water heater of the present invention.
Fig. 3: be the cutaway view of heater first embodiment of water heater of the present invention.
Fig. 4: be located at the stereo appearance figure in the staving of water heater for the heater of first embodiment of the invention.
Fig. 5: be located at the cutaway view in the staving of water heater for the heater of first embodiment of the invention, the water in the exterior heat hydrophone staving enters the schematic diagram of this metallic sheath portion.
Fig. 6: be located at the cutaway view in the staving of water heater for the heater of first embodiment of the invention, the water in the table metallic sheath portion forms the schematic diagram of delay.
Fig. 7: be the stereo appearance figure of heater second embodiment of water heater of the present invention.
Fig. 8: be three-dimensional exploded view and the cutaway view of heater second embodiment of water heater of the present invention.
Fig. 9: be located at the cutaway view in the staving of water heater for the heater of second embodiment of the invention.
Figure 10: be the schematic diagram of the heater of existing water heater.
The primary clustering symbol description:
91 heating rods, 92 binding ends, 93 holders, 94 anti-being stained with stick layer
11 perforation of 1 heater, 3 heaters, 10 holders
20 heating rods, 201 exsertion parts, 202 built-in positions, 31 metal external members
Ladder retaining edge in 311 joint portions, 312 metallic sheath portions, the 3121 outer ladder retaining edge 3122
3123 internal thread parts, 313 openings, 32 fixtures, 321 external thread parts
322 abutment ends, 33 leakage barriers, 41 metal external members, 411 joint portions
4111 perforation, 4112 outer ladders keep off edge 412 metallic sheath portions 413 openings
Length in L1 first length L 2 second length L 3 the 3rd length L bucket
A channel 2 stavings 210 hold hole 220 fixing holes
230 conjunctions
The specific embodiment
Relevant the technology used in the present invention, means and effect thereof, lift now that several preferred embodiments and conjunction with figs. describe in detail as after, this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.
Referring to figs. 1 through Fig. 3, be stereo appearance figure, three-dimensional exploded view and the cutaway view of heater first embodiment of water heater of the present invention.Heater 1 first embodiment of water heater of the present invention comprises a holder 10, at least one heating rod 20 and a metal external member 31.
This holder 10 in the form of sheets in the present embodiment.
Be provided with three heating rods 20 in the present embodiment altogether, this heating rod 20 comprises an exsertion part 201 and a built-in position 202, and this heating rod 20 is incorporated into this holder 10, and this exsertion part 201 and this built-in position 202 lay respectively at the both sides of this holder 10.
This metal external member 31 comprises a joint portion 311, a metallic sheath portion 312 and an opening 313 in the present embodiment, and this joint portion 311 and this opening 313 lay respectively at the two ends of this metallic sheath portion 312.This joint portion 311 forms ladder retaining edge 3122 in an outer ladder retaining edge 3121 and with these metallic sheath portion 312 joints, and the inner peripheral of this joint portion 311 forms an internal thread part 3123 again.This holder 10 can support is located at ladder retaining edge 3122 in this, one fixture 32 in the form of a ring, its outer peripheral edges form an external thread part 321, external thread part 321 spiral shells of this fixture 32 are located at this internal thread part 3123, and the end face of these fixture 32 1 ends forms an abutment end 322, this abutment end 322 supports is located at this holder 10, this holder 10 and should in be provided with a leakage barriers 33 between the ladder retaining edge 3122, this leakage barriers 33 can prevent that water in this metallic sheath portion 312 is by leakage between this fixture 32 and this joint portion 311.
Include three heating rods 20 in the present embodiment altogether, and the length at the built-in position 202 of each heating rod 20 is neither identical, in these three heating rods 20, the length at the built-in position 202 of the longest heating rod 20 is first length L 1, should interior ladder retaining edge 3122 to the distance between this opening 313 be second length L 2, this first length L 1 make this built-in position 202 be subjected to the coating of this metallic sheath portion 312 fully, and this built-in position 202 can not expose to this metallic sheath portion 312 less than this second length L 2.
With reference to Fig. 4 to Fig. 6, be located at the schematic diagram in the staving of water heater for the heater of first embodiment of the invention.The staving 2 of water heater can be fixed in the joint portion 311 of this metal external member 31, and the wall of staving 2 forms and holds hole 210, and staving 2 has the wall wall relative with it that holds hole 210 and forms length L in the bucket.This metal external member 31 is arranged in holds hole 210, and the outer wall of staving 2 is established and be incorporated into to these outer ladder retaining edge 3121 retainings, can be combined by the mode of welding between staving 2 in this joint portion 311.This metallic sheath portion 312 is sheathed on this built-in position 202, this opening 313 can allow water heater staving 2 interior water enter this metallic sheath portion 312, and be slightly less than a barrel interior length L by this second length L 2, allow and form narrow and small passage A between opening 313 and relative staving 2 walls, and the water that is positioned at this metallic sheath portion 312 form to be detained, the chance of these built-in position 202 contact flow water can be slowed down and the generation of incrustation scale can be reduced.Simultaneously because the volume in this metallic sheath portion 312 less than the volume in the water heater staving 2, and makes the water that is positioned at this metallic sheath portion 312 form delay, can slow down the chance of these built-in position 202 contact flow water and can reduce the generation of incrustation scale.
This first length L 1 is less than or equal to this second length L 2 approximately, and can reduce the chance that these built-in position 202 contacts are positioned at the outer water of this metallic sheath portion 312, further slows down the chance of these built-in position 202 contact flow water and can reduce the generation of incrustation scale.
The water that is positioned at this metallic sheath portion 312 is directly heated at the built-in position 202 of this heating rod 20, when the water that is positioned at this metallic sheath portion 312 forms certain high temperature, it can improve the temperature of this metallic sheath portion 312 and conduct the temperature that raising is positioned at the water outside this metallic sheath portion 312 by heat by direct contact, moreover the metallic sheath portion 312 of heating up also can utilize direct contact and improve the temperature that is positioned at the water outside this metallic sheath portion 312.
Hot water in this metallic sheath portion 312 keeps certain temperature by these heating rod 20 heating, water in the staving 2 is coating this metallic sheath portion 312, this metallic sheath portion 312 is subjected to the heat conduction of its inner hot water, make this metallic sheath portion 312 have high temperature, the metallic sheath portion 312 of high temperature makes the water in the staving 2 improve temperature, and the hot water that is positioned at this metallic sheath portion 312 also makes the water of staving 2 improve temperature, when this metallic sheath portion 312 keeps certain high temperature, hot water in this metallic sheath portion 312 can keep certain high temperature, this metal external member 31 also can keep certain high temperature, and the cold water in the staving 2 can form hot water through the heat conduction.
The built-in position 202 of this heating rod 20 is because coated by this metallic sheath portion 312, and the cold water in this metallic sheath portion 312 namely become hot water after heating, the hot water in this metallic sheath portion 312 be detained and not can with the outer cold water exchange of this metallic sheath portion 312.Therefore the built-in position 202 of this heating rod 20 only contacts the hot water that is detained, and can not continue to contact new cold water, makes this heating rod 20 can reduce the generation of incrustation scale.
The outer surface of this metallic sheath portion 312 can continue to contact new cold water, just, why this metallic sheath portion 312 can keep temperature to be because these heating rod 20 heating are positioned at the water of these metallic sheath portion 312 inside and make this metallic sheath portion 312 form certain high temperature by the heat conduction, this metallic sheath portion 312 can't produce heat from body, so the incrustation scale of the outside deposition of this metallic sheath portion 312 and not obvious.Moreover, even if the outside deposition incrustation scale of this metallic sheath portion 312 because this metal external member 31 does not produce hot factor from body, makes this metal external member 31 can not blast.And this metal external member 31 can change voluntarily for the user, allows the user can be easy to replace new metal external member 31.
With reference to Fig. 7, Fig. 8 and Fig. 9, be stereo appearance figure, three-dimensional exploded view and the cutaway view of heater second embodiment of water heater of the present invention.The heater 3 of second embodiment comprises a holder 10, at least one heating rod 20 and a metal external member 41.
This holder 10 is provided with several perforation 11, the outer peripheral edges of this perforation 11 contiguous this holder 10 away from the center of this holder 10.
This metal external member 41 comprises a joint portion 411, a metallic sheath portion 412 and an opening 413, and this joint portion 411 and this opening 413 lay respectively at the two ends of this metallic sheath portion 412.This joint portion 411 forms an outer ladder retaining edge 4112 with these metallic sheath portion 412 joints, makes this joint portion 411 be flange shape, and this joint portion 411 is provided with several perforation 4111.
This holder 10 can support and be located at this joint portion 411, and 11 pairs of the perforation of this holder 10 should joint portion 411 perforation 4111, the joint portion 411 of this metal external member 41 is positioned at a side of this holder 10, and the cover portion 412 of this metal external member 41 is sheathed on the built-in position 202 of this heating rod 20.
Include three heating rods 20 in the present embodiment altogether, and the length at the built-in position 202 of each heating rod 20 is neither identical, in these three heating rods 20, the length at the built-in position 202 of the longest heating rod 20 is first length L 1, the total length of this metal external member 41 is the 3rd length L 3, this first length L 1 make this built-in position 202 be subjected to the coating of this metal external member 41 fully, and this built-in position 202 can not expose to this metal external member 41 less than the 3rd length L 3.
Be slightly less than a barrel interior length L by the 3rd length L 3, allow and form narrow and small passage A between opening 413 and relative staving 2 walls, and the water that is positioned at this metallic sheath portion 412 form to be detained, the chance of these built-in position 202 contact flow water can be slowed down and the generation of incrustation scale can be reduced.Simultaneously because the volume in this metallic sheath portion 412 less than the volume in the water heater staving 2, and makes the water that is positioned at this metallic sheath portion 412 form delay, can slow down the chance of these built-in position 202 contact flow water and can reduce the generation of incrustation scale.
This first length L 1 is less than or equal to the 3rd length L 3 approximately, and can reduce the chance that these built-in position 202 contacts are positioned at the outer water of this metal external member 41, further slows down the chance of these built-in position 202 contact flow water and can reduce the generation of incrustation scale.
Can summarize the present invention with regard to the above and have following advantage:
1. the heater of water heater of the present invention, sheathed this built-in position of this metallic sheath portion, this opening can allow the interior water of water heater staving enter this metallic sheath portion, and by the volume in this metallic sheath portion the water that is positioned at this metallic sheath portion form to be detained, the chance of this built-in position contact flow water can be slowed down and the generation of incrustation scale can be reduced.
2. the heater of water heater of the present invention, the length at the built-in position of heating rod is less than or equal to this interior ladder retaining edge to the distance between this opening, and can reduce the chance that this built-in position contact is positioned at the water outside this metallic sheath portion, further slow down the chance of this built-in position contact flow water and can reduce the generation of incrustation scale.
3. the heater of water heater of the present invention, be slightly less than a barrel interior length by ladder retaining edge to the distance between the opening in this metal external member, allow and form narrow and small passage between opening and the relative staving wall, and the water that is positioned at this metallic sheath portion form to be detained, the chance of this built-in position contact flow water can be slowed down and the generation of incrustation scale can be reduced.
4. the heater of water heater of the present invention, total length by this metal external member is slightly less than a barrel interior length, allow and form narrow and small passage between opening and the relative staving wall, and the water that is positioned at this metallic sheath portion form to be detained, the chance of this built-in position contact flow water can be slowed down and the generation of incrustation scale can be reduced.
5. the heater of water heater of the present invention, during the outside deposition incrustation scale of this metallic sheath portion, because this metal external member does not produce the factor of heat from body, make this metal external member can not blast, and this metal external member can change voluntarily for the user, allows the user can be easy to replace new metal external member.
Be the above person, only be preferred embodiment of the present invention, when can not with restriction scope of the invention process, so the displacement of the change of numerical value or equivalent elements such as, or according to equalization variation and modification that claim of the present invention is done, all should still belong to the category that patent of the present invention contains.
Claims (8)
1. the heater of a water heater is characterized in that including:
A holder;
At least one heating rod, it comprises exsertion part and built-in position, and this heating rod is incorporated into this holder, and this exsertion part and this built-in position lay respectively at the both sides of this holder;
A metal external member, it comprises the joint portion, metallic sheath portion and opening, this joint portion and this opening lay respectively at the two ends of this metallic sheath portion, this joint portion is in conjunction with this holder, and the staving of water heater can be fixed in this joint portion, the wall of staving forms and holds the hole, staving has the wall wall relative with it that holds the hole and forms length in the bucket, this metal external member is arranged in holds the hole, sheathed this built-in position of this metallic sheath portion, this opening can allow the interior water of staving of water heater enter this metallic sheath portion, by the volume in this metallic sheath portion less than the volume in the staving of water heater, and the length that this metal external member is arranged in the staving appearance hole is slightly less than a barrel interior length, allow and form narrow and small passage between opening and the relative staving wall, and being formed, the water that is positioned at this metallic sheath portion is detained, reduce the chance of this built-in position contact flow water and can reduce the generation of incrustation scale, the water in this metallic sheath portion is heated at this built-in position, water conservancy in this metallic sheath portion improves the temperature of this metallic sheath portion and utilizes the heat conduction to improve the temperature of the water outside this metallic sheath portion with the heat conduction, and this metallic sheath portion of heating up utilizes the heat conduction to improve the temperature of the water outside this metallic sheath portion.
2. the heater of water heater as claimed in claim 1 is characterized in that, this joint portion and this metallic sheath portion joint form an outer ladder retaining edge, and the outer wall of staving is established and be incorporated into to this outer ladder retaining edge retaining.
3. the heater of water heater as claimed in claim 2 is characterized in that, is combined in the mode of welding between staving in this joint portion.
4. the heater of water heater as claimed in claim 3, it is characterized in that, this joint portion and this metallic sheath portion joint form an interior ladder retaining edge, and the inner peripheral of this joint portion forms an internal thread part again, and this holder supports is located at ladder retaining edge in this, and a fixture in the form of a ring, its outer peripheral edges form an external thread part, the external thread part spiral shell of this fixture is located at this internal thread part, and the end face of this fixture one end formation abutment end, and this abutment end supports is located at this holder.
5. the heater of water heater as claimed in claim 4 is characterized in that, is provided with one between this holder and this interior ladder retaining edge and can prevents that the water in this metallic sheath portion is by the leakage barriers of leaking between this fixture and this joint portion.
6. as the heater of claim 4 or 5 described water heaters, it is characterized in that, the length at this built-in position is first length, should interior ladder retaining edge to the distance between this opening be second length, this first length is less than this second length, make this built-in position be subjected to the coating of this metallic sheath portion fully, and this built-in position can not expose to this metallic sheath portion.
7. the heater of water heater as claimed in claim 1, it is characterized in that, this holder is provided with several perforation, this joint portion and this metallic sheath portion joint form an outer ladder retaining edge, this joint portion is flange shape, this joint portion is provided with several perforation, and the perforation of this holder, the perforation of this joint portion be corresponding to fixing hole set on the staving, and by conjunction this holder and this joint portion is incorporated into staving.
8. the heater of water heater as claimed in claim 7 is characterized in that, the length at this built-in position is first length, and the total length of this metal external member is the 3rd length, and this first length is less than the 3rd length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165629 CN102235752B (en) | 2010-05-07 | 2010-05-07 | Heating device for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165629 CN102235752B (en) | 2010-05-07 | 2010-05-07 | Heating device for water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102235752A CN102235752A (en) | 2011-11-09 |
| CN102235752B true CN102235752B (en) | 2013-08-07 |
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ID=44886649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010165629 Expired - Fee Related CN102235752B (en) | 2010-05-07 | 2010-05-07 | Heating device for water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102235752B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB545596A (en) * | 1941-03-17 | 1942-06-03 | Worcester Windshields And Case | Improvements in electric water heaters and heating elements therefor |
| US5878192A (en) * | 1996-12-12 | 1999-03-02 | Water Heater Innovations, Inc. | Heating element for water heaters with scale control |
| TW458265U (en) * | 2000-08-08 | 2001-10-01 | Jiann Jzaw Metal Industry Co L | Improved structure for electric heating tube set of water heater |
| TW458271U (en) * | 2001-02-21 | 2001-10-01 | Sen Lin Industry Co Ltd | Improved water tank structure for solar water heater |
| CN1376884A (en) * | 2001-03-28 | 2002-10-30 | 龚伟 | Indirectly heated volume-type water heater |
| TW590207U (en) * | 2001-10-25 | 2004-06-01 | Jiann Jzaw Metal Industry Co L | Structure improvement on electric heating tube of water heater |
| CN2769758Y (en) * | 2005-02-26 | 2006-04-05 | 舒志新 | Positive displacement electric water heater |
| CN201355115Y (en) * | 2009-02-28 | 2009-12-02 | 杨昌岳 | Electric water heater |
-
2010
- 2010-05-07 CN CN 201010165629 patent/CN102235752B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB545596A (en) * | 1941-03-17 | 1942-06-03 | Worcester Windshields And Case | Improvements in electric water heaters and heating elements therefor |
| US5878192A (en) * | 1996-12-12 | 1999-03-02 | Water Heater Innovations, Inc. | Heating element for water heaters with scale control |
| TW458265U (en) * | 2000-08-08 | 2001-10-01 | Jiann Jzaw Metal Industry Co L | Improved structure for electric heating tube set of water heater |
| TW458271U (en) * | 2001-02-21 | 2001-10-01 | Sen Lin Industry Co Ltd | Improved water tank structure for solar water heater |
| CN1376884A (en) * | 2001-03-28 | 2002-10-30 | 龚伟 | Indirectly heated volume-type water heater |
| TW590207U (en) * | 2001-10-25 | 2004-06-01 | Jiann Jzaw Metal Industry Co L | Structure improvement on electric heating tube of water heater |
| CN2769758Y (en) * | 2005-02-26 | 2006-04-05 | 舒志新 | Positive displacement electric water heater |
| CN201355115Y (en) * | 2009-02-28 | 2009-12-02 | 杨昌岳 | Electric water heater |
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| Publication number | Publication date |
|---|---|
| CN102235752A (en) | 2011-11-09 |
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