CN108886840A - Ceramic heater - Google Patents
Ceramic heater Download PDFInfo
- Publication number
- CN108886840A CN108886840A CN201680084342.3A CN201680084342A CN108886840A CN 108886840 A CN108886840 A CN 108886840A CN 201680084342 A CN201680084342 A CN 201680084342A CN 108886840 A CN108886840 A CN 108886840A
- Authority
- CN
- China
- Prior art keywords
- heater
- potsherd
- supporting mass
- ceramic heater
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 97
- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 241000278713 Theora Species 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 24
- 230000015556 catabolic process Effects 0.000 abstract description 22
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 239000011521 glass Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/004—Heaters using a particular layout for the resistive material or resistive elements using zigzag layout
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/027—Heaters specially adapted for glow plug igniters
Landscapes
- Resistance Heating (AREA)
Abstract
The present invention, which provides one kind, to improve the ceramic heater of reliability by preventing the insulation breakdown generated in heater.Ceramic heater of the invention includes the potsherd (19) for being wound in the periphery of supporting mass (17) and being built-in with heater (41).Heater (41) has the wiring portion (44) extended along the axis direction of supporting mass (17) and the interconnecting piece that adjacent wiring portion (44) is connected to each other.Thickness until the outer peripheral surface (47) of potsherd (19) is played on the surface (46) of self-heating device wiring (41) be set as t, the voltage for being applied to heater (41) be set as to V, the ora terminalis of self-heating device wiring (41) is played into the end face (48) of potsherd (19) until distance when being set as w, the distance between a pair of of wiring portion (44) for being configured at side opposite each other across the portion that intervolves (20) being set as L, meet the relationship of t >=0.2mm and meet at least one of L/V >=9/500 and w/V >=3/500 relationship.
Description
Technical field
The present invention relates to one kind to iron for such as warm water cleaning toilet seat, warm-air drier, electric heater, 24 hours bathtubs, weldering
The ceramic heater of iron, hair iron etc., more particularly, to a kind of pottery for being built-in with heater in the periphery of supporting mass winding
The ceramic heater of the construction of tile.
Background technique
Under normal circumstances, the heat exchange list of the container (heat exchanger) with resin is used in warm water cleaning toilet seat
Member.In order to heat to the ejected wash water being accommodated in heat exchanger, the ceramic heat of tubular is installed in the heat exchange unit
Device.
It is known a kind of by being printed with heating in cylindric supporting mass made of ceramics winding as this ceramic heater
The potsherd of device wiring simultaneously carries out integrated sintering and the ceramic heater that constitutes (referring for example to patent document 1).
Existing technical literature
Patent document
Patent document 1：No. 3038039 bulletins of Japanese Patent Publication No. (Fig. 1 etc.)
Summary of the invention
Problems to be solved by the invention
In addition, the ceramic heater of warm water cleaning toilet seat is in water always, therefore hardly in drying regime
Under be energized, heat.On the other hand, cut off the water supply, be piped break down when, it is possible to be energized, heat in the dry state.But
It is, if being heated in the dry state, it is likely that in the be located at side opposite each other position with intervolving portion across potsherd
Potential difference is generated between a pair of of heater and is generated heat, the glass being present in the potsherd near the heater of fever
Components fuse.In this case, since electronics is easy to move, it can be across with intervolving portion positioned at the one of side opposite each other
To shelf depreciation occurs between heater, down to insulation breakdown.Also, because the spark generated in shelf depreciation causes
Ceramic composition present in potsherd also melts, therefore there are ceramic heaters, and damaged such problems occurs.
The present invention is made in view of the above subject, it is intended that providing one kind can be by preventing in heater
The insulation breakdown generated in wiring improves the ceramic heater of reliability.
The solution to the problem
Also, scheme (technical solution 1) as a technique for solving these problems, there are a kind of ceramic heaters, should
Ceramic heater includes supporting mass made of ceramics and is wound in the periphery of the supporting mass and is built-in with the ceramics of heater
Piece, the ceramic heater are characterized in that the heater extends more with the axis direction along the supporting mass
A wiring portion and the interconnecting piece that the adjacent wiring portion is connected to each other, by the potsherd from the heater
Surface play the potsherd outer peripheral surface until the thickness voltage that is set as t (mm), the heater will be applied to
It is set as V (V), will be from the end face that the ora terminalis of the heater plays the potsherd in intervolving at portion for the potsherd
Distance only is set as the distance between w (mm), described wiring portion of a pair that side opposite each other will be configured at across the portion of intervolving
When being set as L (mm), meets the relationship of t >=0.2mm and meet at least one of L/V >=9/500 and w/V >=3/500 relationship.
Thus, using invention described in technical solution 1, by meeting the relationship of t >=0.2mm and meeting the He of L/V >=9/500
At least one of w/V >=3/500 relationship can be improved insulation breakdown intensity.As a result, it is possible to prevent from intervolving near portion
The melting of glass ingredient present in potsherd, therefore can prevent in a pair of of the heating for being located at side opposite each other across the portion of intervolving
Insulation breakdown between device wiring, and the breakage of ceramic heater can be prevented.Therefore, can be improved ceramic heater can
By property.
It is further preferred, that above-mentioned ceramic heater meets at least one of t/V >=1/500 and w/t >=3 relationship.And
And, it is preferred that the narrow of the outer peripheral surface exposure for extending and making supporting mass along the axis direction of supporting mass is formed in the portion of intervolving
Seam meets the relationship of 0.2≤L-2w≤1.5 when the width of slit to be set as being worth derived from formula L-2w.If as more than
It sets like that, then can more reliably improve insulation breakdown intensity, therefore be reliably prevented from and be located at phase each other across the portion of intervolving
The insulation breakdown between a pair of of heater tossed about, and it is reliably prevented from the breakage of ceramic heater.It therefore, can be into
The reliability of one step raising ceramic heater.
Above-mentioned ceramic heater has supporting mass made of ceramics and is wound in the potsherd of the periphery of supporting mass.As being used for
The ceramics of supporting mass and potsherd are formed, such as aluminium oxide, aluminium nitride, silicon nitride, boron nitride, zirconium oxide, dioxy can be enumerated
Change titanium, mullite etc. as appropriate example.In particular, supporting mass and potsherd are preferably made of aluminium oxide.In such manner, it is possible to
The ceramic heater of low cost manufacturing heat resistance, chemical resistance and excellent strength.In addition, potsherd have for example using
Heater made of tungsten, molybdenum, tantalum etc. (heater).It is further preferred, that heater contains in tungsten and molybdenum at least
It is a kind of to be used as main component.In such manner, it is possible to be close to heater reliably relative to potsherd, therefore can further mention
The reliability of high ceramic heater.
Detailed description of the invention
Fig. 1 is the main view of the ceramic heater in present embodiment.
Fig. 2 is the top view for indicating ceramic heater.
Fig. 3 is the line A-A cross-sectional view of Fig. 1.
Fig. 4 is the explanatory diagram shown in by potsherd expansion.
(a) of Fig. 5~Fig. 5 (d) is the explanatory diagram for indicating the manufacturing method of ceramic heater.
Fig. 6 is the explanatory diagram for indicating the manufacturing method of the ceramic heater in another embodiment.
Specific embodiment
Hereinafter, being illustrated based on the drawings ceramic heater and its manufacturer of an embodiment of specific embodiments of the invention
Method.
The ceramic heater 11 of present embodiment is used for the heat exchange in the heat exchange unit of such as warm water cleaning toilet seat
Ejected wash water is heated in device.
As shown in Figure 1 and Figure 2, which has cylindrical heater body made of ceramics 13 and is externally embedded to
In the flange 15 of the metal annular shape of heater body 13.Flange 15 is by by the metal plate benging of such as stainless steel etc.
And the circular component formed, center portion are concave (cup-shaped).
In the present embodiment, as shown in Fig. 2, in the concave part of flange 15, outer peripheral surface by heater body 13
14 and flange 15 inner surface surround space become glass lay portion 35.It is filled with glass 33 in glass lay portion 35, by
The glass 33 fixes heater body 13 and 15 welding of flange.In addition, in Fig. 2, with the part of shadow representation glass 33.
As shown in FIG. 1 to 3, heater body 13 by cylindrical supporting mass made of ceramics 17 and is wound in supporting mass
The potsherd 19 of 17 periphery is constituted.In the present embodiment, supporting mass 17 and potsherd 19 are by aluminium oxide (Al2O3) etc. pottery
Porcelain is made.The thermal expansion coefficient of aluminium oxide is in 50 × 10-7/ K~90 × 10-7It is in the present embodiment 70 in the range of/K
×10-7/ K (30 DEG C~380 DEG C).In addition, in the present embodiment, the outer diameter of supporting mass 17 is set as 12mm, internal diameter is set as
8mm, length are set as 65mm, and the thickness of potsherd 19 is set as 0.5mm, and length is set as 60mm.In addition, potsherd 19 is not complete
The periphery of all standing supporting mass 17.Therefore, it is formed with slit 21 in the portion 20 that intervolves of potsherd 19, the slit 21 is along supporting mass 17
Axis direction extend, and make supporting mass 17 outer peripheral surface 18 exposure.
As shown in Figure 3, Figure 4, the heater 41 and a pair of winding pattern form are built-in in potsherd 19
Internal terminal 42.In the present embodiment, heater 41 and internal terminal 42 contain tungsten (W) as main component.In addition,
External terminal 43 (reference figure of each internal terminal 42 through not shown lead-through conductors etc. with the outer peripheral surface for being formed in potsherd 19
1) it is electrically connected.
In addition, heater 41 has the multiple wiring portions 44 extended along the axis direction of supporting mass 17 and will be adjacent
The interconnecting piece 45 that is connected to each other of wiring portion 44.A pair of of wiring portion 44 from thickness direction when potsherd 19 positioned at both ends
Side opposite each other is configured at intervolving portion 20 (referring to Fig. 3) across potsherd 19, and the 1st end of a pair of wiring portion 44 is (in Fig. 4
In be upper end) be connected with internal terminal 42, and the 2nd end (in Fig. 4 be lower end) of a pair of wiring portion 44 is via interconnecting piece
45 are connected with the 2nd end of adjacent wiring portion 44.In addition, being located at above-mentioned a pair of of cloth in the potsherd 19 from thickness direction
1st end of the wiring portion 44 between line portion 44 is connected via interconnecting piece 45 with the 1st end of adjacent wiring portion 44, and wiring portion
44 the 2nd end is connected via interconnecting piece 45 with the 2nd end of adjacent wiring portion 44.
As shown in Figure 3, Figure 4, the line width W1 of the wiring portion 44 of present embodiment is set as 0.60mm, and thickness is set as 15 μ
m.Similarly, the line width W2 of the interconnecting piece 45 of present embodiment is also set to 0.60mm, and thickness is also set to 15 μm.That is, wiring
The line width W1 in portion 44 and the line width W2 of interconnecting piece 45 are identical.In addition, the thickness of wiring portion 44 is also identical as the thickness of interconnecting piece 45,
Therefore, the sectional area of sectional area with interconnecting piece 45 of wiring portion 44 is identical.
In addition, as shown in figure 3, playing ceramics from the surface 46 of wiring portion 44 (heater 41) in potsherd 19
Thickness t until the outer peripheral surface 47 of piece 19 is 0.2mm.In addition, in the portion that intervolves 20, from wiring portion 44 (heater 41)
Distance w until ora terminalis plays the end face 48 of potsherd 19 is 0.7mm.Here, " distance w " is referred to along cylindrical branch
Hold the circumferential length of body 17.Also, the distance between a pair of of wiring portion 44 of side opposite each other L is configured at across the portion that intervolves 20
For 2.4mm.Here, " distance L " refers to the length for the straight line that the ora terminalis by a pair of of wiring portion 44 is connected to each other.In addition,
The width for being formed in the slit 21 in the portion of intervolving 20 is the value derived from formula L-2w, is in the present embodiment 1mm.
Next, method of the explanation for manufacturing the ceramic heater 11 of present embodiment.
Firstly, by (sketch map is saved with the aluminium oxide claylike previous known extruder of slurry investment as main component
Show), shape cylindrical member.Then, it after making formed cylindrical member dry, carries out being heated to scheduled temperature (for example, about
1000 DEG C) pre-sintering, so that supporting mass 17 be made (referring to (a) of Fig. 5).
In addition, use is formed into the 1st ceramic green of potsherd 19 with alumina powder ceramic material as main component
Piece 51 and the 2nd ceramic green sheet 52.In addition, the forming method as ceramic green sheet, is able to use the known forming process such as scraper method.
Also, conductive paste is printed on the surface of the 1st ceramic green sheet 51 using previous known paste printing equipment (illustration omitted)
Agent (being in the present embodiment tungsten paste).As a result, foring on the surface of the 1st ceramic green sheet 51 as heater
41 and internal terminal 42 un-sintered electrode 53 (referring to Fig. 5 (b)).In addition, the position of un-sintered electrode 53 is for example adjusted to,
Position obtained by shrinkage when added sintering on the basis of the position of heater 41.
Then, after conductive paste is dry, in the printing surface (face for forming un-sintered electrode 53) of the 1st ceramic green sheet 51
The 2nd ceramic green sheet 52 of upper stacking, and apply pressing force on piece stacking direction.As a result, each ceramic green sheet 51, ceramic green sheet 52
Integration forms raw cook laminated body 54 (referring to (c) of Fig. 5).In addition, the thickness of the 2nd ceramic green sheet 52 is for example adjusted to, certainly
The routed outside portion 46 of heater 41 play the outer peripheral surface 47 of potsherd 19 until thickness t on the basis of added sintering
When shrinkage obtained by size.Also, conductive paste is printed on the surface of the 2nd ceramic green sheet 52 using paste printing equipment
Agent.As a result, being formed into the un-sintered electrode 55 of external terminal 43 on the surface of the 2nd ceramic green sheet 52.
Then, in the single side face coating ceramic paste (aluminium oxide paste) of raw cook laminated body 54, make raw cook laminated body volume 54
Around and be adhered to supporting mass 17 outer peripheral surface 18 (referring to Fig. 5 (d)).At this moment, the size of raw cook laminated body 54 is adjusted
So that the end of raw cook laminated body 54 does not overlap each other.Then, according to known method be dried process, degreasing process etc. it
Afterwards, it is heated to make raw cook laminated body 54 (ceramic green sheet 51, ceramic green sheet 52 and un-sintered electrode 53, un-sintered electrode 55)
The scheduled temperature (such as 1400 DEG C~1600 DEG C or so) that aluminium oxide and tungsten can be sintered, is sintered simultaneously.As a result, pottery
The tungsten in aluminium oxide and conductive paste in porcelain raw cook 51, ceramic green sheet 52 is sintered simultaneously, and raw cook laminated body 54 becomes ceramics
Piece 19, un-sintered electrode 53 become heater 41 and internal terminal 42, and un-sintered electrode 55 becomes external terminal 43.So
Afterwards, nickel plating is implemented to external terminal 43, to be made into heater body 13.
Then, stamping to the plate progress being made of stainless steel using mold, form the flange 15 of cup-shaped.Then,
The scheduled installation site of heater body 13 will be embedded in outside flange 15.Then, by glass 33 by heater body 13 and convex
15 welding of edge is fixed, and ceramic heater 11 is completed.
<Experimental example>
Hereinafter, the experimental example that explanation carries out to evaluate the performance of the ceramic heater 11 of present embodiment.
Firstly, having prepared measurement sample as follows.Following such ceramic heater is prepared and as sample
Product A, i.e.,：Thickness t (referring to Fig. 3) until the outer peripheral surface that potsherd is played on the surface of self-heating device wiring (wiring portion) is
0.18mm, the distance w (referring to Fig. 3) until the ora terminalis of self-heating device wiring (wiring portion) plays the end face of potsherd is 0.6mm,
Being configured at the distance between a pair of of wiring portion of side opposite each other L (referring to Fig. 3) across the portion of intervolving is 1.4mm, is formed in and intervolves
The width L-2w of the slit in portion is 0.2mm.In addition, having prepared following such ceramic heater and as sample B, i.e.,：
Thickness t is 0.18mm, and distance w is 1mm, and distance L is 3mm, and width L-2w is 1mm.Following such ceramic heater is prepared
And as sample C, i.e.,：Thickness t is 0.2mm, and distance w is 0.5mm, and distance L is 3mm, and width L-2w is 2mm.Prepare
Such ceramic heater and as sample D below, i.e.,：Thickness t is 0.2mm, and distance w is 0.7mm, and distance L is
1.6mm, width L-2w are 0.2mm.Prepare following such ceramic heater, i.e. with the ceramic heater of present embodiment 11
Identical ceramic heater and as sample E, i.e.,：Thickness t is 0.2mm, and distance w is 0.7mm, and distance L is 2.4mm, wide
Degree L-2w is 1mm.Following such ceramic heater is prepared and as sample F, i.e.,：Thickness t is 0.2mm, distance w
It is 3mm for 1mm, distance L, width L-2w is 1mm.Following such ceramic heater is prepared and as sample G, i.e.,：
Thickness t is 0.3mm, and distance w is 1mm, and distance L is 2.4mm, and width L-2w is 0.4mm.Prepare following such ceramics to add
Hot device and as sample H, i.e.,：Thickness t is 0.3mm, and distance w is 1mm, and distance L is 3mm, and width L-2w is 1mm.Prepare
Following such ceramic heater and as sample I, i.e.,：Thickness t is 0.4mm, and distance w is 1.3mm, and distance L is
3mm, width L-2w are 0.4mm.Following such ceramic heater is prepared and as sample J, i.e.,：Thickness t is
0.4mm, distance w are 1.3mm, and distance L is 3.8mm, and width L-2w is 1.2mm.Following such ceramic heater is prepared simultaneously
As sample K, i.e.,：Thickness t is 0.4mm, and distance w is 1.5mm, and distance L is 4.5mm, and width L-2w is 1.5mm.Prepare
Following such ceramic heater and as sample L, i.e.,：Thickness t is 0.5mm, and distance w is 1.3mm, and distance L is
3mm, width L-2w are 0.4mm.Following such ceramic heater is prepared and as sample M, i.e.,：Thickness t is
0.5mm, distance w are 1.5mm, and distance L is 3.8mm, and width L-2w is 0.8mm.Following such ceramic heater is prepared simultaneously
As sample N, i.e.,：Thickness t is 0.5mm, and distance w is 1.3mm, and distance L is 3mm, and width L-2w is 0.4mm.Prepare
Such ceramic heater and as sample O below, i.e.,：Thickness t is 0.5mm, and distance w is 1.5mm, and distance L is
4.3mm, width L-2w are 1.3mm.Following such ceramic heater is prepared and as sample P, i.e.,：Thickness t is
0.5mm, distance w are 1.5mm, and distance L is 4.3mm, and width L-2w is 1.3mm.Following such ceramic heater is prepared simultaneously
As sample Q, i.e.,：Thickness t is 0.5mm, and distance w is 1.5mm, and distance L is 4.5mm, and width L-2w is 1.5mm.This
Outside, sample A~sample Q has respectively prepared 10.
Then, a pair of internal terminal possessed by the potsherd relative to each measurement sample (sample A~sample Q) (adds
Hot device wiring) welding nichrome wire, so that each measurement sample is in drying regime and is set to base station.Then, in one pair
Apply 6 minutes voltage V (one of exchange 100V, 140V, 200V, 240V) between portion's terminal, is measured using thermal camera
The surface temperature of potsherd out.Specifically, the voltage of exchange 100V is applied with to sample A~sample E, to sample F~sample
H, sample L, sample M be applied with exchange 140V voltage, to sample I, J, P be applied with exchange 200V voltage, to sample K, N,
O, Q is applied with the voltage of exchange 240V.In addition, respectively to sample A~sample Q, calculating the value of t/V, w/t, L/V, w/V.
Also, it sees whether that insulation breakdown is having occurred between a pair of of wiring portion that the portion of intervolving is located at side opposite each other, is occurring
In the case where insulation breakdown, its time of origin is measured and recorded.Then, in each sample A~sample Q, by insulation breakdown
The sample (that is, having 6 or more samples that insulation breakdown occurs in 10 samples) that incidence is 60% or more is judged as "×",
The sample that the incidence of insulation breakdown is 30%~50% (is broken that is, there are 3~5 samples that insulation occurs in 10 samples
It is bad) be judged as " △ ", by the incidence of insulation breakdown be 10%~20% sample (that is, there is 1 or two in 10 samples
Insulation breakdown occurs for sample) it is judged as "○", the sample that the incidence of insulation breakdown is 0% (is not sent out that is, 10 samples are whole
Raw insulation breakdown) it is judged as " ◎ ".Above result is shown in Table 1 below.
(table 1)
As a result, confirming, in thickness t sample A, B less than 0.2mm, the incidence of insulation breakdown is 60% or more,
Therefore judgement becomes "×".It in thickness t is 0.2mm or more and L/V is less than 9/500 and w/V is less than 3/500 in addition, confirm
Sample N in, the incidence of insulation breakdown is 60% or more.On the other hand, it confirms, is 0.2mm or more and L/V in thickness t
In sample C~sample M, the sample O~sample Q for being 3/500 or more for 9/500 or more or w/V, the incidence of insulation breakdown is
50% or less.Also, confirm, in sample C~sample M, sample O~sample Q, t/V be 1/500 or more and w/t be 3 with
On sample D, E, G~J, M, O~Q in, the incidence of insulation breakdown is 20% or less.In particular, confirm, sample D, E,
In sample E, H, J, M, P, Q in G~J, M, O~Q, L/V is 9/500 or more and w/V is 3/500 or more, do not insulate
It destroys.
By demonstrating above, if being set as meeting t >=0.2mm, L/V >=9/500, w/V >=3/500, t/V >=1/ simultaneously
500 and w/t >=3 relationship, then can prevent the generation of insulation breakdown.
Thus, using present embodiment, effect below can be obtained.
(1) in the ceramic heater of present embodiment 11, since thickness t is 0.2mm, distance w is 0.7mm, distance L is
2.4mm, voltage are exchange 100V, therefore meet the relationship of t >=0.2mm and meet the pass of L/V >=9/500 and w/V >=3/500
System, so as to improve insulation breakdown intensity.As a result, it is possible to prevent glass present in the potsherd 19 near the portion that intervolves 20
The melting of glass ingredient, therefore can prevent in the insulation between a pair of of wiring portion 44 that the portion that intervolves 20 is located at side opposite each other
It destroys, and the breakage of ceramic heater 11 can be prevented.Therefore, it can be improved the reliability of ceramic heater 11.
(2) in the present embodiment, a pair of of the internal terminal 42 for being formed in potsherd 19 is configured than across potsherd 19
The portion 20 that intervolves be located at the position (referring to Fig. 4) of a pair of of wiring portion 44 of side opposite each other in the inner part.Therefore, by potsherd 19
When being wound in the periphery of supporting mass 17, two internal terminals 42 are radially located at side opposite each other supporting mass 17.As a result,
The distance between two internal terminals 42 become larger, therefore can prevent from discharging between two internal terminals 42.
In addition it is also possible to change present embodiment as described below.
In the above-described embodiment, in the single side face coating ceramic paste of raw cook laminated body 54, make raw cook laminated body 54
Wind and be adhered to the outer peripheral surface 18 of supporting mass 17 but it is also possible to be, as shown in fig. 6, using a part of ceramic paste 61 come
Covering becomes the end face of the raw cook laminated body 62 of potsherd and the outer peripheral surface 64 of supporting mass 63.In addition, in this case, distance w
Also the ora terminalis for being routed (un-sintered electrode 65) for self-heating device plays the length until the end face of potsherd (raw cook laminated body 62).
... in the above-described embodiment, the supporting mass 17 of ceramic heater 11 is cylindrical in shape, but supporting mass can also be in rodlike.
That is, ceramic heater can be used for the equipment (such as warm-air drier etc.) different from warm water cleaning toilet seat.
For the ceramic heater 11 of above embodiment, it is applied with alternating voltage between a pair of of internal terminal 42,
But DC voltage can also be applied between a pair of of internal terminal 42.
Then, it described in the technical solution other than technical thought, is exemplified below and is grasped by the embodiment
Technical thought.
(1) a kind of ceramic heater, the ceramic heater include supporting mass made of ceramics and are wound in the supporting mass
Periphery and the potsherd for being built-in with heater, the ceramic heater be characterized in that, the heater have along
The multiple wiring portions and the interconnecting piece that the adjacent wiring portion is connected to each other that the axis direction of the supporting mass extends, are being incited somebody to action
Thickness until playing the outer peripheral surface of the potsherd in the potsherd from the surface of the heater be set as t (mm),
The voltage for being applied to the heater is set as V (V), by intervolving at portion from the heater in the potsherd
Ora terminalis play the potsherd end face until distance be set as w (mm), will be configured at across the portion of intervolving it is opposite each other
When the distance between described wiring portion of a pair of side is set as L (mm), meet the relationship of t >=0.2mm, also, meet L/V >=9/
At least one of 500 and w/V >=3/500 relationship and the relationship for meeting t/V >=1/500 and w/t >=3.
(2) 1 ceramic heater according to the above technical scheme, which is characterized in that the line width of the wiring portion and the company
The line width of socket part is identical.
Description of symbols
11, ceramic heater；17,63, supporting mass；18, the 64, outer peripheral surface of supporting mass；19, potsherd；20, portion is intervolved；
21, slit；41, heater；44, wiring portion；45, interconnecting piece；46, the surface of heater；47, the periphery of potsherd
Face；48, the end face of potsherd；L, the distance between a pair of of wiring portion of opposite side is configured at across the portion of intervolving；T, self-heating device
Play the thickness until the outer peripheral surface of potsherd in the surface of wiring；V, voltage；W, the ora terminalis of self-heating device wiring plays potsherd
End face until distance.
Claims (5)
1. a kind of ceramic heater, which includes supporting mass made of ceramics and is wound in the periphery of the supporting mass simultaneously
It is built-in with the potsherd of heater, which is characterized in that,
The heater have along the supporting mass axis direction extend multiple wiring portions and will be adjacent described in
The interconnecting piece that wiring portion is connected to each other,
It is set by the thickness until the outer peripheral surface for playing the potsherd in the potsherd from the surface of the heater
It is set as V (V) for t (mm), by the voltage for being applied to the heater, will add at portion from described in intervolving for the potsherd
Distance until the ora terminalis of hot device wiring plays the end face of the potsherd is set as w (mm), will be configured at across the portion of intervolving
When the distance between described wiring portion of a pair of side opposite each other is set as L (mm), meet the relationship of t >=0.2mm and meet L/V >=
At least one of 9/500 and w/V >=3/500 relationship.
2. ceramic heater according to claim 1, which is characterized in that
Meet at least one of t/V >=1/500 and w/t >=3 relationship.
3. ceramic heater according to claim 1 or 2, which is characterized in that
The outer peripheral surface exposure for extending along the axis direction of the supporting mass and making the supporting mass is formed in the portion of intervolving
Slit,
When the width of the slit to be set as being worth derived from formula L-2w, meet the relationship of 0.2≤L-2w≤1.5.
4. ceramic heater according to any one of claim 1 to 3, which is characterized in that
The supporting mass and the potsherd are made of aluminium oxide.
5. ceramic heater according to any one of claim 1 to 4, which is characterized in that
The heater contains at least one of tungsten and molybdenum as main component.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-068115 | 2016-03-30 | ||
| JP2016068115A JP6604884B2 (en) | 2016-03-30 | 2016-03-30 | Ceramic heater |
| PCT/JP2016/088805 WO2017168896A1 (en) | 2016-03-30 | 2016-12-27 | Ceramic heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108886840A true CN108886840A (en) | 2018-11-23 |
| CN108886840B CN108886840B (en) | 2021-05-07 |
Family
ID=59962951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680084342.3A Active CN108886840B (en) | 2016-03-30 | 2016-12-27 | Ceramic heater |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3439428A4 (en) |
| JP (1) | JP6604884B2 (en) |
| KR (1) | KR102136520B1 (en) |
| CN (1) | CN108886840B (en) |
| WO (1) | WO2017168896A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7013288B2 (en) * | 2018-03-13 | 2022-01-31 | 日本特殊陶業株式会社 | Ceramic heater |
| JP7453123B2 (en) | 2020-11-13 | 2024-03-19 | 京セラ株式会社 | Heater and heater manufacturing method |
| CN113225857B (en) * | 2021-05-19 | 2022-05-27 | 江苏天宝陶瓷股份有限公司 | Far infrared ceramic heater of adjustable bore |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR102136520B1 (en) | 2020-07-22 |
| KR20180124029A (en) | 2018-11-20 |
| EP3439428A4 (en) | 2019-11-13 |
| CN108886840B (en) | 2021-05-07 |
| WO2017168896A1 (en) | 2017-10-05 |
| EP3439428A1 (en) | 2019-02-06 |
| JP6604884B2 (en) | 2019-11-13 |
| JP2017183070A (en) | 2017-10-05 |
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Application publication date: 20181123 Assignee: CHANGZHOU LAMBDA CERAMIC INDUSTRY CO.,LTD. Assignor: NGK SPARK PLUG Co.,Ltd. Contract record no.: X2023990000974 Denomination of invention: Ceramic Heater Granted publication date: 20210507 License type: Common License Record date: 20231219 |