CN1248546C - Structure of electric heater and its mfg - Google Patents
Structure of electric heater and its mfg Download PDFInfo
- Publication number
- CN1248546C CN1248546C CNB011122110A CN01112211A CN1248546C CN 1248546 C CN1248546 C CN 1248546C CN B011122110 A CNB011122110 A CN B011122110A CN 01112211 A CN01112211 A CN 01112211A CN 1248546 C CN1248546 C CN 1248546C
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- Prior art keywords
- electric heating
- heating coil
- tabular
- electric heater
- insulator
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- 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
- H05B3/62—Heating elements specially adapted for furnaces
-
- 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
- H05B3/08—Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures
-
- 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
-
- 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
- H05B2203/017—Manufacturing methods or apparatus for heaters
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- Resistance Heating (AREA)
- Surface Heating Bodies (AREA)
Abstract
An electric heater structure and its manufacturing method are provided to improve a degree of cleanliness, radiation efficiency of heater heat, and design freedom of a possible size. On a tabular heat insulator, a plurality of through groove holes are formed consisting of a groove part to be fitted with an electric heat coil B from a plate face of one side, a heat radiation groove which communicates into this groove part and regulates a coil fitting depth and which discharges the heat of coil to the outside from the other plate face, and a receiving concave of the coil part of the electric heat coil which has been installed in an inner surface of the groove part, another tabular heat insulator is as a cap at an electric heat coil fitting side of the tabular heat insulator.
Description
Technical field
The present invention relates to one and be applicable to the electric heater structure that is used in the baking kiln of roasting electronic unit and/or the improvement of its manufacture method.
Background technology
Traditionally, common electric heater (being referred to as the electric heating coil later on) by coil shape heating wire coiling is supported by heat-barrier material.For example, No. 2903131 Japan Patent discloses an electric heater structure.According to this structure, tabular upright body is made by the mixture of the preparation gained of for example ceramic fibre and so on article and inorganic binder, the bottom of electric heater coil is pressed to embed tabular upright body then.Because the upright body of being made by mixture can produce convergent force and adhesion in air-dry and caking, the electric heating coil is fixed on the upright body securely.
In addition, No. 2652266 Japan Patent also discloses the electric heater structure.According to this configuration, the electric heating coil that forms a reservation shape in advance is located in the injection mould, is added into inorganic binder in the ceramic fibre simultaneously before pouring into the mixed liquor of preparation and makes mixture be in moisture state in injection mould.Mixture air-dry and the caking before, the major part of electric heating coil comes out from mixture, breaks away from from injection mould and drying course then.
In aforesaid traditional electric heater, the formation of its structure may further comprise the steps: be in when promptly simultaneously the electric heating coil being embedded into injection moulding in the heat-barrier material in the injection mould.Therefore, the electric heating coil forms one by it being bonded on the heat-barrier material with heat-barrier material.When the electric heating coil with voltage bestow/do not bestow and repeatedly the heat-barrier material part that keeps in touch of expansion and electric heating coil can produce and break and rupture.This becomes the reason that particulate produces.When this situation further develops, heat-barrier material can collapse the appearance that produces particulate thus.
Owing to this reason, in the process of burning, must guarantee to use under the situation of clean-up performance (for example relevant baking kiln) in place the structure of above-mentioned electric heater with electric part.
In addition, with mode injection moulding as mentioned above the time, the electric heating coil is fitted into simultaneously under the situation of structure of heat-barrier material, because the electric heating coil is close on large stretch of area of heat-barrier material, the heating energy of electric heating coil directly is passed on the heat-barrier material with certain ratio, and the radiation efficiency of electric heating coil begins to worsen thus.
In addition, in the example of back, injection mould is molded out the upright body construction of supporting electric heating coil by using as mentioned above.The size of electric heater produces a defective thus by this injection mould decision, and promptly design size can't freely change.
Summary of the invention
The present invention considers the problems referred to above and makes that purpose of the present invention provides one can improve structure and the manufacture method thereof that also can freely carry out the electric heater of size design clean-up performance, that can improve the electric heater radiation efficiency especially.
According to first aspect of the present invention, an electric heater structure is provided here, comprise two tabular insulators that stack together mutually; One of them tabular insulator is provided with a plurality of perforation slot openings, and described slot opening comprises: the groove part that its cross sectional shape can make an electric heating coil cooperate with it on direction of described tabular insulator plate-like surface; A radiation opening that is communicated with described groove part is radiated to the external world and controls the cooperation degree of depth of described coil from described tabular insulator plate-like surface other direction with heat that the electric heating coil is produced; And be formed on the described tabular insulator and be connected connectivity slot part between the adjacent grooves part, the electric heating coil conductor wire end that is used for being engaged in each groove part that connects is connected on the guiding conductor wire end; Described another tabular insulator is stacked and placed on described tabular insulator as a cover body and is combined with on that side of electric heating coil.
According to second aspect present invention, be provided with an electric heater structure here, wherein be provided with a shrinkage pool in order to the coil that holds the electric heating coil in the groove fit part inboard of electric heating coil.
By third aspect present invention, an electric heater structure is provided here, wherein simultaneously inorganic binder is added in the inorfil and be used as tabular insulator through preparation by the injection molded plate body of muddy raw material.
By fourth aspect present invention, an electric heater structure is provided here, wherein the effect between the elastic force of the elastic force of coil and insulator can be fixed heat insulation coil and the width by making groove form the groove fit part less than the method for heat insulation coil diameter width.
By fifth aspect present invention, an electric heater structure is provided here, wherein the electric heating coil is fixed in the groove fit part by jointing material.
By sixth aspect present invention, an electric heater structure is provided here, wherein on the inboard of electric heating coil mating groove, form wave-like or trickle inhomogeneous shape, thus fixing electric heating coil.
By a seventh aspect of the present invention, on described tabular thermal insulation barriers, be formed with the fixed-use bolt hole, described fixed-use bolt hole is formed between described each radiation opening; And comprise a receiving member, described receiving member by the cylindrical bottom portion with bolt hole and from described cylindrical bottom along the radiation opening direction outwards outstanding flange portion form; Described fixed-use bolt hole is formed with on that side plate shape surface that radiation is arranged of described tabular thermal insulation barriers scrapes a mouthful section, and described receiving member is positioned at and is engaged in wherein.
By a eighth aspect of the present invention, the described flange portion of described receiving member is the elongated part with the incising circular flange.
By ninth aspect present invention, the manufacture method of one electric heater structure is provided here, comprise the steps: to use a plate body of forming by the muddy raw material by injection mo(u)lding one, through preparation and add inorganic binder in the inorfil method simultaneously and two tabular insulators forming; Form the slot opening of a plurality of perforations therein on tabular insulator by cut, described slot opening comprises: the groove part that its cross sectional shape can make an electric heating coil cooperate with it on direction of described tabular insulator plate-like surface; And a radiation opening that is communicated with described groove part, be radiated to the external world and control the cooperation degree of depth of described coil from described tabular insulator plate-like surface other direction with heat that the electric heating coil is produced; The conductor wire end that the radiation opening will be matched with the electric heating coil that respectively connects slot opening interconnects; And described another tabular insulator is stacked and placed on described tabular insulator as a cover body is combined with on that side of electric heating coil.
By tenth aspect present invention, a kind of electric heater is provided here, which is provided with and be used for a plurality of radiation openings that the heat radiation of each electric heating coil generation is extremely extraneous, described radiation opening is formed in the inboard and is provided with on the described surface of tabular fiber insulator of many electric heating coils, the fixed-use bolt hole of wherein said electric heater is formed between the described radiation opening, one receiving member of being made up of the outstanding flange portion of the cylindrical bottom portion of strap bolt through hole and the cylinder opening along the radiation opening direction from described column part, described receiving member are engaged in and are formed in the scraping mouthful section of described radiating surface side screw place.
By a eleventh aspect of the present invention, a kind of electric heater is provided here, the described flange portion of described receiving member is the elongated part with the incising circular flange.
Description of drawings
Special combination is the appended claims of a book part as an illustration, can point out that the present invention concludes the characteristic of a plurality of novelties of gained, be to understand better the present invention, its service advantages and by using the purpose that can reach, can consult accompanying drawing and set forth and the descriptive example that illustrates and understanding as a preferred embodiment of the present invention.
Fig. 1 is the stereogram of an embodiment of expression the present invention one electric heater structure;
Fig. 2 is the end view that the assembling of expression electric heater structure constitutes;
Fig. 3 is the vertical view that expression fits into the electric heating coil fit structure of tabular insulator;
Fig. 4 is the stereogram that is provided with the electric heater of a bolt hole;
Fig. 5 is the partial sectional view that is contained in the upright body in the electric heater;
Fig. 6 is the vertical view of the upright body that is received;
Fig. 7 is to use the sectional view of the upright body major part of above-mentioned electric heater;
Fig. 8 is the stereogram of the plate heater of expression another embodiment of the present invention;
Fig. 9 is the sectional view of electric heater major part shown in Figure 8;
Figure 10 is the partial sectional view of the upright body side that held in the electric heater of Fig. 8;
Figure 11 is the vertical view of the upright body that held;
Figure 12 is the partial sectional view of the upright body side that held in further embodiment of this invention of expression; And
Figure 13 is the vertical view of the upright body that held.
Embodiment
As a preferred embodiment of the present invention, will be briefly described the present embodiment represented below as Fig. 1 to Fig. 3.One electric heater structure comprise with will be wherein an insulator fold tabular insulator A1 and the A2 that mutually combines in the mode at another insulator top, on insulator A1, be provided with the slot opening 1 of many perforations parallel to each other.Slot opening 1 comprises: the groove part 1a that cross sectional shape can cooperate electric heating coil B on direction of tabular insulator plate-like surface with it; One that be communicated with groove part 1a, be used for radiation opening 1b that the heat that the electric heating coil produces is radiated outside from tabular insulator plate-like surface other direction, this radiation opening control coil simultaneously cooperates degree of depth radiation opening; And one be formed in the groove part 1a to hold the depression 1c of electric heating coil winding portion.One connectivity slot part 1d is formed on the insulator A1, and the electric heating coil conductor wire end that is used for being engaged in each slot opening that connects is connected on the guiding conductor wire end.Insulator A2 is overlayed on that side that insulator A1 is combined with the electric heating coil as a cover body and form an electric heater structure.One embodiment of the invention as shown in Figure 1 to Figure 3.
In Fig. 1 to Fig. 3, two tabular insulator A1, A2 constitute the major part of electric heater structure.Each slab insulant all can lump together with the top junction of another heat-barrier material.
Above-mentioned tabular insulator A1, A2 is added in the ceramic fibre as main material through preparation and with inorganic binder by the muddy raw material, the plate-like body made from suction-dehydration formation method.
One preferable manufacturing example of the tabular insulator of being made by inorfil is as follows with brief description.
(A) alumina silicate fibre 90 weight quota
(the composition weight ratio 50% of silicon, the composition weight ratio 50% of aluminium, about 200 microns of average fiber length, 3 microns of fiber diameter)
(B) average particle diameter is silicic acid glue 10 weight quota of 20 nanometers
(C) concentrating agents 1 weight quota
(D) water 4000 weight quota
Tabular injection moulding part is made by the muddy raw material, these raw material are by mixing above-mentioned raw material with suction-dehydration formation method, be that 105 degree, time are air-dry injection moulding part under 24 hours the condition in temperature then, obtain tabular inorfil insulator at last.Density by the inorfil insulator that said method obtained is 0.2 gram/cubic centimetre, have remarkable insulative properties, and have the physical characteristic of being convenient to mechanical treatment and cutting, and weight is very little.
Tabular insulator A1, A2 all form by the said method manufacturing.In insulator A1, a plurality of perforation slot openings 1 straight, that be used for cooperating an electric heating coil B are located at parallel with other slot opening and the position at a required interval are arranged.
The above-mentioned slot opening 1 that respectively connects comprises that groove part 1a and radiation open 1b.Electric heating coil B is matched with in the groove part 1a from direction of tabular insulator plate-like surface.Because it is littler than the width of the groove part 1a that is embedded with coil that the width of 1b is opened in radiation, and the degree of depth of the electric heating coil that may command cooperates, and the heat that the electric heating coil produces can be radiated outside from the plate-like surface relative direction.In addition, in described example, the formation of depression 1c be contained in the groove part 1a that is used for embedding the electric heating coil in winding portion with electric heating coil B inner surface simultaneously coil be fixed on the position.
In addition, be formed with connectivity slot part 1d in tabular insulator A1, electric heating coil conductor wire end links to each other in the slot opening 1 with adjacent respectively connecting to be used for guiding and make the conductor wire end of electric heating coil.In the drawings, a conductor wire end adapter sleeve of 2 expression coils.
The A2 of tabular insulator folds on that side plate shape insulator A1 that is combined with the electric heating coil, and two insulators, are connected in together such as screw bolt and nut by coupling arrangement thus.3 is bolt-inserting holes.
Electric heater structure with above-mentioned composition has following properties.
(1) in above-mentioned traditional electric heater structure, electric heater is by constituting in the upright body that simultaneously the electric heating coil is embedded the inorfil insulator, this causes because the expansion and the contraction of electric heating coil, the heat-barrier material partial rupture that contacts with the electric heating coil and the situation of fracture, this becomes the reason that particulate produces.When this situation further develops, the heat-barrier material collapse produces particulate thus.Yet in the present invention, the electric heating coil only is matched with in the groove part.Because the electric heating coil is not become one with tabular insulator, insulator can move to a certain extent.Thus, the problems referred to above can produce hardly.Can improve the clean-up performance of electric heater structure so on the whole.
(2) in the structure of the groove part that the electric heating coil is coupled to the inorfil insulator, because the contact area of electric heating coil and heat-barrier material is limited, thermal radiation is strengthened, and radiation efficiency improves thus.
(3) be used for supporting the electric heating coil the inorfil insulator need not to use injection mould to form.Owing to can use the tabular insulator of independently making as raw material, so need not to use injection mould.Realize the variation of design thus easily.Owing to need not to use injection mould, do not have standard size here, so the size design of electric heater can change freely in addition.
(4), so can be used for the perforation slot opening that cooperates with electric heating wire and the connectivity slot part of electric heating coil conductor wire end by simple cut formation if employed plate body is by through preparation and form method with suctions-dehydration and inorganic binder is added into as the cement raw material in the ceramic fibre of main material is injection molded into.
(5) adjusting under the situation of Digit Control Machine Tool processing unit (plant) with the formation cut, can realize high accuracy and high-speed cut, owing to nc program, it has the advantage that can deal with small lot batch manufacture in addition.
(6) owing to the time that need not to produce injection mould, this can shorten the delivery date that makes product combining with digital control processed.
In the above-described embodiment, preparation has been done in the manufacturing according to the depression 1c of the winding portion that is used for holding the electric heating coil on coil and groove part 1b inner surface for matching.Thus, depression 1c is on the throne with coil stationary.Yet, can be coil stationary is on the throne by the method that will put on such as the binding agent the fire-resistant plaster in the groove part 1b that its structure can cooperate with the diameter of electric heating coil.In this case, binding agent can partially or even wholly be had an effect.
In addition, exist device to be used for forming a width, the width that makes groove part can be fixed on the electric heating coil between electric heating coil and the heat-barrier material side by elastic force thus to a certain extent less than the diameter of electric heating coil.
Can process in addition making waveform or inhomogeneous shape (for example zigzag), the electric heating coil is fixed on these inner surfaces of having processed with the groove inner surface of electric heating coil mating part.Can obtain the maintenance energy of electric heater unit in this case, and allow coil span irregular to a certain extent.
In addition, can suitably be used in combination the fixture of above-mentioned electric heating coil.
Electric heater of the present invention as shown in Figure 4 is provided with a hole 12 that is used for making the bolt of electric heater to pass in a precalculated position, and like this, electric heater can be bearing in by the fastener of bolt screw and so on the roof of baking kiln.
Yet because above-mentioned electric heater is the very big body of a weight, and insulator A1, A2 make by fibrous insulating material, and its injection moulding body strength reduction can be cut the fiber insulator and/or form crackle and crack on the fiber insulator for fastening of nut.
For overcoming the problems referred to above, can on the bolt hole 12 of the radiating surface side of tabular fiber insulator, form a spot-facing part., receiving member D is matched with scrapes in mouthful section, and then be fixed to shown in Figure 7 after a fin neck bolt is passed bolt hole 12 as Fig. 5 with nut.
Above-mentioned receiving member D comprise a cylindrical bottom portion 14, one bolt holes 15, from cylindrical bottom portion 14 openings outwards protrude round flange part 16.Generally, the receiving member material is a pottery.
In structure shown in Figure 6, the electric heater among Fig. 4 is supported on the roof of baking kiln by the use of above-mentioned receiving member D.Same parts in the same label list diagrammatic sketch 4.
In Fig. 7, one scrapes a mouthful section 17 is formed on the bolt hole of radiating surface side, and receiving member D is matched with and scrapes in mouthful section 17, and a bolt 18 is fixed on the roof 19 of baking kiln, and support material 20 is made by the inorfil blanket.Electric heater is fixed on the roof by the method that nut 21 is fixed to the head of double-screw bolt 18, and this head passes the bolt hole 12 of insulator A1, A2 and stretches out from the bolt hole 15 of receiving member D.After nut 21 is fastening, clay heat-barrier material 22 is filled in the receiving member D in addition.
As mentioned above, by hold-down nut and the fastening structure that nut is engaged in pass the method for the bolt head of receiving member D to form, in the time of positively preventing screw threads for fastening like this to the cutting of fibrous insulating material and crackle and the crack on the consequent fibrous insulating material.
In addition, when using receiving member D to make nut fastening tabular insulator A1 is applied the broad surface pressing, can obtain stable supporting force thus by its flange portion 16.
In addition, receiving member D and nut that core is embedded in the tabular insulator are in mated condition, owing to can not bear the heat that directly from electric heater, gives off, thus realized being used for protecting the protective materials effect of nut.For example, reach at high radiations heat energy under the situations of 1000 degree, just can not adopt common metal system nut, yet the existence of receiving member makes the safeguard protection of the nut possibility that becomes.
Yet, the far-end that not only can be arranged at the slot opening 1 (radiation opening) of perforation with bolt hole 12 is installed, also can be between adjacent cut.In this structure, the size that forms the round flange part 16 of receiving member D can be relatively large, and therefore, large scale partly limits the spacing of adjacent perforation slot opening 1.
The above-mentioned spacing that respectively connects slot opening 1 needs narrow width from consistency and high radiation efficiency viewpoint.Yet as mentioned above, the flange part branch of receiving member hinders more closely-spaced generation, and the interval that connects between slot opening is unrestrictedly diminished.
On the other hand, can recognize the diameter that can reduce receiving member round flange part by processing, yet the deterioration in the unit are inner surface pressure effect of tabular insulator of receiving member will cause the appearance of problem of the flange portion cutting insulator of receiving member.
Fig. 8 to Figure 11 represents the embodiment that the present invention is used for addressing the above problem.According to the embodiment that mentions later, can reduce the spacing between the radiation opening, in addition, provide the electric heater that can not cut down the effect of bolt receiving member here.
In this embodiment, a receiving member B is engaged in scraping in mouthful section 17 of tabular fiber insulator A1.As shown in Figure 8, receiving member B forms with the part form that (slot opening 1) attenuates on the radiation opening direction thus of cutting its round flange.Flange portion is expressed as 16.
As mentioned above, the flange portion 16 of receiving member D have one on the radiation opening direction elongated shape of (slot opening 1), although the spacing of radiation opening is very narrow thus, still can guarantee the contact area of insulator even substantially.
In addition, scrape in mouthful section 17, can realize the structure that receiving member and hold-down nut do not rotate simultaneously because the elongated flanges part 16 of receiving member D is matched with.
In addition, the injection moulding process that the part of wherein round flange part is cut to the elongated flanges partial shape not only has the advantage of high yield, the width of backlash freedom ground adjustment flange portion that simultaneously can corresponding radiation opening.
Figure 12 to Figure 13 represents the another embodiment of receiving member D.Receiving member D in the present embodiment has the rectangular flange part that forms when injection moulding.In this embodiment, can form oval flange part and also be not limited to the rectangular flange part thus.
By above-mentioned structure, receiving member can have elongated flange portion, and this flange portion has flange portion as being used for being matched with scraping on mouthful radiation opening length direction of the bolt receiving member of section in the bolt hole that is formed on electric heater radiating surface side.Spacing between each radiation opening can further reduce.And can obtain can not cutting down the electric heater of the effect of bolt receiving member.
As mentioned above, the present invention can provide an electric heater structure and a manufacture method thereof, can improve the electric heater radiation efficiency thus and make the electric heater size design become flexible.
Discussed here is the example of thinking preferred embodiment for now, know and can do multiple modification therein, and can cover thus that all do not break away from the modification of the scope of the invention in the claims.
Claims (11)
1. an electric heater structure comprises two tabular insulators that stack together mutually; One of them tabular insulator is provided with a plurality of perforation slot openings, and described slot opening comprises:
The groove part that its cross sectional shape can make an electric heating coil cooperate with it on direction of described tabular insulator plate-like surface; A radiation opening that is communicated with described groove part is radiated to the external world and controls the cooperation degree of depth of described coil from described tabular insulator plate-like surface other direction with heat that the electric heating coil is produced; And be formed on the described tabular insulator and be connected connectivity slot part (1d) between the adjacent grooves part, the leading line end of electric heating coil that is used for will being engaged in each groove part that connects is connected on the conductor wire end that is directed;
Described another tabular insulator is stacked and placed on described tabular insulator as a cover body and is combined with on that side of electric heating coil.
2. electric heater structure according to claim 1 is characterized in that, comprises that also one is formed in the described groove part (1a) depression (1c) with the winding portion of holding the electric heating coil.
3. electric heater structure according to claim 1 is characterized in that, described tabular insulator is added to inorganic binder simultaneously in the inorfil and makes through preparation by the injection molded plate body of muddy raw material.
4. as electric heater structure as described in the claim 3, it is characterized in that the groove part width by making described cooperation can be by the fixing electric heating coil of the elastic force of described coil and the effect between the described tabular thermal insulation barriers elastic force less than described electric heating wire loop diameter.
5. electric heater structure according to claim 1 is characterized in that described electric heating coil is fixed in the groove part of described cooperation by jointing material.
6. electric heater structure according to claim 1 is characterized in that, in inboard wave-like or the inhomogeneous shape of forming of the groove part that cooperates described electric heating coil with fixing electric heating coil.
7. electric heater structure according to claim 1 is characterized in that be formed with the fixed-use bolt hole on described tabular thermal insulation barriers, described fixed-use bolt hole is formed between described each radiation opening; And comprise a receiving member, described receiving member by the cylindrical bottom portion with bolt hole and from described cylindrical bottom along the radiation opening direction outwards outstanding flange portion form; Described fixed-use bolt hole is formed with on that side plate shape surface that radiation is arranged of described tabular thermal insulation barriers scrapes a mouthful section, and described receiving member is positioned at, is engaged in wherein.
8. electric heater structure according to claim 1 is characterized in that, cut described receiving member round flange a part and make it become elongated shape.
9. the manufacture method of an electric heater structure comprises the steps:
The plate body that utilization one is made up of the muddy raw material by injection mo(u)lding one is through preparing two tabular insulators that also add inorganic binder in the inorfil method simultaneously and form;
Form the slot opening of a plurality of perforations therein on tabular insulator by cut, described slot opening comprises:
The groove part that its cross sectional shape can make an electric heating coil cooperate with it on direction of described tabular insulator plate-like surface; And a radiation opening that is communicated with described groove part, be radiated to the external world and control the cooperation degree of depth of described coil from described tabular insulator plate-like surface other direction with heat that the electric heating coil is produced;
The conductor wire end that is matched with the electric heating coil that respectively connects slot opening is interconnected; And
Described another tabular insulator is stacked and placed on described tabular insulator as a cover body to be combined with on that side of electric heating coil.
10. electric heater, its structure according to claim 1, and have a plurality of described radiation openings, described radiation opening is formed in the inboard and is provided with on the described surface of tabular fiber insulator of many electric heating coils, the fixed-use bolt hole of wherein said electric heater is formed between the described radiation opening, one receiving member of being made up of the outstanding flange portion of the cylindrical bottom portion of strap bolt through hole and the cylinder opening along the radiation opening direction from described column part, described receiving member are engaged in and are formed in the scraping mouthful section of described radiating surface side screw place.
11. electric heater as claimed in claim 10 is characterized in that, cut described receiving member round flange a part and make it become elongated shape.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP086630/00 | 2000-03-27 | ||
| JP086630/2000 | 2000-03-27 | ||
| JP2000086630A JP3889198B2 (en) | 2000-03-27 | 2000-03-27 | Electric heater structure and manufacturing method thereof |
| JP239946/2000 | 2000-08-08 | ||
| JP239946/00 | 2000-08-08 | ||
| JP2000239946A JP2002056957A (en) | 2000-08-08 | 2000-08-08 | Panel heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1318967A CN1318967A (en) | 2001-10-24 |
| CN1248546C true CN1248546C (en) | 2006-03-29 |
Family
ID=26588437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011122110A Expired - Fee Related CN1248546C (en) | 2000-03-27 | 2001-03-27 | Structure of electric heater and its mfg |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100770960B1 (en) |
| CN (1) | CN1248546C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006001151B3 (en) * | 2006-01-06 | 2007-05-10 | Von Ardenne Anlagentechnik Gmbh | Radiation heater box for vacuum system, has heater coils mechanically connected with section of coil winding, where coil winding is detachably connected with surface unit, by connection produced by three contact points |
| CN102551444A (en) * | 2012-01-09 | 2012-07-11 | 迟昀涛 | Helix type safe electric heating blanket without magnetic fields |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0690946B2 (en) * | 1986-09-10 | 1994-11-14 | 松下電器産業株式会社 | Electric heating unit |
-
2001
- 2001-03-23 KR KR1020010015106A patent/KR100770960B1/en not_active IP Right Cessation
- 2001-03-27 CN CNB011122110A patent/CN1248546C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR100770960B1 (en) | 2007-10-30 |
| KR20010091028A (en) | 2001-10-22 |
| CN1318967A (en) | 2001-10-24 |
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