CN1826023B - Flat shape heater equipment - Google Patents
Flat shape heater equipment Download PDFInfo
- Publication number
- CN1826023B CN1826023B CN2006100076186A CN200610007618A CN1826023B CN 1826023 B CN1826023 B CN 1826023B CN 2006100076186 A CN2006100076186 A CN 2006100076186A CN 200610007618 A CN200610007618 A CN 200610007618A CN 1826023 B CN1826023 B CN 1826023B
- Authority
- CN
- China
- Prior art keywords
- flat shape
- supporting bracket
- heat release
- shape heater
- release silk
- 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.)
- Expired - Fee Related
Links
- 238000007665 sagging Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract description 3
- 239000011295 pitch Substances 0.000 abstract 3
- 230000004043 responsiveness Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000009257 reactivity Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Images
Landscapes
- Surface Heating Bodies (AREA)
Abstract
Provided is a planar heater device excelling in responsiveness, and capable of preventing a material loss, and obviating the need of a special correction structure for preventing drift. In this planar heater device 2, a plurality of heating surfaces 41 of a heating wire are arranged in parallel with one another on the surface of a support plate 3 by winding the single ribbon-like heating wire 4 on the support plate 3. The support plate 3 is so structured that ridge-shaped uneven parts 31a are repeatedly formed at pitches P at one of parallel sides thereof opposite to each other; and ridge-shaped uneven parts 31b having the same shapes are repeatedly formed at the same pitches P on the other of the parallel sides by shifting them by 1/2 pitch. By winding the single ribbon-like heating wire 4 along ridge-shaped slope faces of the ridge-shaped uneven parts 31a, and by arranging it between the ridge-shaped uneven parts 31a and 31b on both the sides opposite to each other as shown in Fig., the heating surfaces 41 of the ribbon-like heating wire 4 are set parallel with the surface of the support plate 3, and the plurality of the heating surfaces 41 are arranged in parallel with one another on the support plate surface.
Description
Technical field
The present invention relates to the good flat shape heater equipment of exothermic reaction.
Background technology
All the time, when making resin-molded component etc., under the situation of the big resin plate of heating surface (area) (HS, various plane heaters have been used.The flat shape heater equipment that a plurality of flush type pottery far infra-red heaters of imbedding heating wire in ceramic body are arranged is for example arranged.(with reference to patent documentation 1: special public clear 45-017947 communique) thus since the heating wire of this type of flush type pottery far infra-red heater not to be exposed to the outside durability good, but because the thermal capacitance of heater self is big, so, after energising, arriving predetermined temperature needs a lot of times so reactivity is poor, is unsuitable for the interrupted heat run that adds.In addition, even in case of emergency break energising in addition, the problem of spended time in temperature is reduced to the safe temperature scope.
As this reactive flat shape heater of improvement, have by heater and carry out etching and processing with sheet metal or punch process waits the flat shape heater that forms reciprocal pattern heat unit predetermined materials such as iron nickel system, nickel chromium triangle systems.(with reference to patent documentation 2: the spy opens the 2001-126847 communique) is though Fig. 7 represents an example of this flat shape heater equipment, but this heater assembly 1 usefulness said method makes reciprocal pattern radiating part 11 with the thin-sheet metal heating element, owing to hold-down screw 21 this reflex part 12 is fixed on the heater supporting bracket 2, so zigzag pattern 11 also makes both ends become conducting terminal 13,13.
In this type of heater assembly,, significantly improve reactive owing to can reduce the thermal capacitance of device.But, owing to removed the part of heater with sheet metal, so will produce material unaccounted-for (MUF).Have again, because etching or punch process cost height, so overall cost is also high.And, exist under the irregular situation in the resistance value of material, except the inconvenience that almost can not adjust the heater resistance is arranged, also have the problem of the special correcting structure of needs etc. in order to prevent near the reflex part 12 of radiating part 1 current deviation (bias current).
Summary of the invention
The present invention is for solving described problem, and its purpose is to provide realization response good and can prevent material unaccounted-for (MUF), and does not need the flat shape heater equipment of the described correcting structure of corresponding bias current.
The problems referred to above can solve by flat shape heater equipment of the present invention, flat shape heater equipment of the present invention is characterized in that: possess the flat shape heater at the heat delivery surface of reel on the supporting bracket ribbon heat release silk and the heat release silk that be arranged in parallel on the supporting bracket face.And, ideal style of the present invention is: it is concavo-convex to be concatenated to form chevron on the limit of this flat shape heater in the relative edge of supporting bracket, the identical shaped chevron that is concatenated to form 1/2 spacing that staggers on another side is concavo-convex, simultaneously, one ribbon exotherm is twined along described chevron inclined-plane, and between the chevron on relative both sides is concavo-convex, set up, and on the supporting bracket face, be arranged side by side a plurality of these heat delivery surfaces so that the heat delivery surface of described banded heat release silk is parallel to the supporting bracket face.
Have, among the present invention, described supporting bracket it is desirable to the non-water absorption electrical insulating material that is made of micarex or aluminium sheet, as its shape, it is desirable to be provided with the frame shape plate in the space of running through in the table again.
In addition, comparatively ideal on the surface of the described supporting bracket that is provided with banded heat release silk is that the fixedly members of frame of outer surface is housed.And holding and being fixed with the outer box of described supporting bracket of banded heat release silk comparatively ideal is to have the structure of enhancing.
Have, preferably adopt at the front of flat shape heater installing frame parts, this members of frame possesses the structure that prevents sheet that prevents banded heat release filament sag; Can also adopt on the banded heat release silk of flat shape heater direct spot welding to connect the structure of the leading section of thermocouple.
Like this, flat shape heater equipment of the present invention is owing to use the strip heater that exposes so reactive good.And, because the ribbon heat release silk of reeling constitutes flat shape heater, so can obtain not produce fully the advantage of material unaccounted-for (MUF).In addition, because the ribbon heat release silk of reeling constitutes flat shape heater, and owing to do not produce the deviation of part electric current, so have the excellent results that does not need described correcting structure.Therefore, the present invention has very big industrial value as the flat shape heater equipment of eliminating existing issue.
Description of drawings
Fig. 1 is the front view that is used to illustrate the flat shape heater of flat shape heater equipment of the present invention.
Fig. 2 is the front view of expression supporting bracket of the present invention.
Fig. 3 is used to illustrate the supporting bracket of winding state of heat release silk and the pith stereogram of heat release silk.
Fig. 4 is front view (A), the end view (B) of expression flat shape heater equipment of the present invention.
Fig. 5 is other modes (A) front view (B) of expression supporting bracket of the present invention.
Fig. 6 shows reactive curve chart not of the present invention.
Fig. 7 is the sectional view of expression other execution modes of the present invention.
Fig. 8 is the front view of expression other execution modes of the present invention.
Fig. 9 is vertical view and its A-A line sectional view of the medial surface of expression members of frame.
Figure 10 is the sectional view of the mounting structure of expression thermocouple.
Figure 11 is the vertical view and the end view of the mounting structure of expression thermocouple.
Figure 12 is the vertical view of 4 states that are connected in series of expression flat shape heater equipment of the present invention.
Figure 13 is the front view of the existing flat shape heater equipment of expression.
Among the figure:
The 2-flat shape heater, the 3-supporting bracket, 31a, 31b-chevron are concavo-convex, 32a, 32b-chevron inclined-plane, the banded heat release silk of 4-, 41-heat delivery surface.
Embodiment
Next, the execution mode of flat shape heater equipment of the present invention is described with reference to accompanying drawing 1-Fig. 6.
The feature of flat shape heater equipment of the present invention is to use on flat shape heater 2 these aspects that are provided with multiple row banded heat release silk 4 shown in Figure 1, and, the ribbon heat release silk 4 and a plurality of heat delivery surfaces 41 of heat release silk are located at abreast in the flat shape heater 2 on supporting bracket 3 surfaces and are had this point of reeling on the supporting bracket 3.
Specify again, in the present invention,, used the supporting bracket 3 of shape shown in Figure 2 for the ribbon heat release silk 4 of reeling.This supporting bracket 3 has been concatenated to form the concavo-convex 31a of chevron with spacing P on its parallel relative edge's a limit, and has been concatenated to form the concavo-convex 31b of identical shaped chevron of 1/2 spacing that staggers on the another side with spacing P.
And, as shown in Figure 3, chevron inclined-plane 32a along the concavo-convex 31a of described chevron twines with banded heat release silk 4, and as shown in Figure 1, (between 31a and the 31b) sets up between the chevron on relative both sides is concavo-convex, make the heat delivery surface 41 of described banded heat release silk 4 be parallel to 3 of supporting brackets, and, on the supporting bracket face, be arranged side by side a plurality of these heat delivery surfaces 41 and constitute ideally.
Here, banded heat release silk 4 42,42 is pulled out and is connected with the input terminal (not shown) from the end.Have, in this embodiment, chevron inclined-plane 32a can be the inclination angle that angle is 45 degree again.And, be provided with four in the periphery on the supporting bracket 3 and fix with holes 33.
Flat shape heater equipment of the present invention is a critical piece with the flat shape heater 2 of above explanation, has represented among Fig. 4 that its parts constitute example.Among Fig. 4, in the outer box 51 of band square frame, described flat shape heater 2 makes heat delivery surface 41 hold on the installation metal parts 52 and be provided with towards the surface and by fixing being fixed to hole 33 usefulness screws.Have, required electric power is supplied with from input terminal 53,53 again.In addition, here, for relaxing by the caused distortion of the radiant heat of heat release silk, the outer box 51 of band square frame is to have the enhancings that bend constituted such as the 51a of the folding line portion structure that is produced by punching press its planar portions coideal.
Have again, if constituting, it is equipped with on surface of flat shape heater 2 its outer surface with the fixing members of frame 54 of frame shape and push down the two end portions of heat delivery surface 41, then under the situation that flat shape heater 2 is provided with downwards, owing to preventing the sagging of described heat delivery surface 41, so more satisfactory.This members of frame 54 is suitable for using the aluminum sinter pottery from considerations such as thermal endurance and electrical insulating properties.
Have again,,, be suitable for utilizing the non-water absorption electrical insulating material of micarex or sintering aluminium sheet class then as its material if the used supporting bracket 3 of the present invention is replenished.According to surface size, its thickness can use the material of 1mm-5mm.And, as its shape, shown in Fig. 5 example, if be the frame shape plate that is provided with most circular holes space 34 (Fig. 5 A) of running through in the table and hollows out middle space 35 (Fig. 5 B), then the thermal capacity owing to this support portion self further reduces, so it is have the further advantage of improving temperature-reactive, so very desirable.
As mentioned above, owing to flat shape heater equipment of the present invention uses under the state that exposes banded heat release silk, so reactivity is good certainly.For example, as shown in Figure 6, in flush type pottery far infra-red heater, shown in temperature curve A, after energising beginning, three minutes have been spent and have not also reached capacity temperature, but shown in temperature curve B, in flat shape heater equipment of the present invention, the high response of the temperature that obtained after about 10 seconds, just to reach capacity.
Like this, owing to obtained good reactivity among the present invention, under intermittently overheated situation, when improving the efficiency of heating surface, also can reduce the power loss of heating process.Have again, constitute flat shape heater owing to twine a ribbon heat release silk, so obtained not produce fully the special advantage of the material unaccounted-for (MUF) of exothermic material.In addition, though heat delivery surface back and forth, fold back portion owing to there is not the variation of the area of section that is similar to existing heater, do not produce the deviation of part electric current, do not need the advantage of existing correcting structure so have because of not producing material degradation.
In the embodiment described above, as shown in Figure 4, though push the peripheral part of planar heater 2 by tetragonal members of frame 54, the thermal expansion in heater uses of banded heat release silk 4, and central portion is sagging sometimes under the ventricumbent situation of heating.Here, as Fig. 7, shown in Figure 8, it is desirable to: make the sag-resistant sheet 55 that possesses banded heat release silk 4 at the members of frame of installing previously 54 of planar heater 2, and sag-resistant sheet 55 has next door structure 56 and contacts not make between the banded heat release silk becoming as shown in Figure 9 on the inboard face, and prevents central portion sagging of planar heater 2.Have again, though not necessarily one of sag-resistant sheet 55, if because the quantity increase will be covered heat delivery surface, so be provided with one at the most sagging central portion as it is desirable to as shown in the figure.
In addition,, under the situation of existing planar heater, the cylindrical body of insulating properties is installed usually though the thermocouple that is used for detected temperatures and control output has been installed in the planar heater device of the present invention, and the leading section of portion's insertion within it and stationary heat galvanic couple.But, as Figure 10, shown in Figure 11, intersect and be directly welded to above the central portion of banded heat release silk 4 by the front end that makes two metal line that constitute thermocouple 60, can realize simplified construction and reduce cost.
Have again, the actual specification of this kind planar heater device is generally the size of 125mm * 125mm, the thermal discharge of each is that the 570-580W. existing product is limited on loop density, for the thermal discharge that makes per unit area meets afore mentioned rules, makes voltage drop to 30V and energising with transformer.
But planar heater of the present invention so can make the resistance of the per unit area that is determined by loop density be higher than existing product, also can meet afore mentioned rules even turn round owing to adopt the curling structure of above-mentioned special banded heat release silk 4 under 50V voltage.Here, as shown in figure 12, can adopt four planar heater devices are connected in series, and apply method of operation as the 200V of industrial power supply voltage at its two ends.As adopt this class methods, then needn't as in the past, transformer be set, and can significantly reduce cost.Have again, but, be connected in series so not necessarily leave no choice but four because the adjusting range of its loop density of planar heater device of the present invention is big, also can be two be connected in series or six be connected in series.Can realize that this type of using method also is of the present invention one big advantage.
Claims (7)
1. flat shape heater equipment is characterized in that:
Possess the flat shape heater of the ribbon heat release silk of on supporting bracket, reeling, on this supporting bracket face, the heat release silk is set, the heat delivery surface of above-mentioned heat release silk and above-mentioned supporting bracket face are parallel to each other;
It is concavo-convex to be concatenated to form chevron on the limit of described flat shape heater in the relative edge of supporting bracket, the identical shaped chevron that is concatenated to form 1/2 spacing that staggers on another side is concavo-convex, simultaneously, one ribbon heat release silk is twined along the concavo-convex chevron inclined-plane of the chevron on a limit, and between the chevron on relative both sides is concavo-convex, set up, make the heat delivery surface of described banded heat release silk be parallel to the supporting bracket face, and on the supporting bracket face, be arranged side by side a plurality of these heat delivery surfaces.
2. flat shape heater equipment according to claim 1 is characterized in that:
Described supporting bracket is the non-water absorption electrical insulating material that is made of micarex or aluminium sheet.
3. flat shape heater equipment according to claim 2 is characterized in that:
Described supporting bracket is the frame shape plate that is provided with the space of running through in the table.
4. flat shape heater equipment according to claim 1 is characterized in that:
The fixedly members of frame of outer surface is housed on the surface of the described supporting bracket that is provided with banded heat release silk.
5. flat shape heater equipment according to claim 1 is characterized in that:
The outer box that holds and be fixed with the described supporting bracket of banded heat release silk has the structure of enhancing.
6. flat shape heater equipment according to claim 1 is characterized in that:
At the front of flat shape heater installing frame parts, this members of frame possesses the sagging sheet that prevents of banded heat release silk.
7. flat shape heater equipment according to claim 1 is characterized in that:
Direct spot welding connects the leading section of thermocouple on the banded heat release silk of flat shape heater.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005037255 | 2005-02-15 | ||
| JP2005037255 | 2005-02-15 | ||
| JP2005-354342 | 2005-12-08 | ||
| JP2005354342 | 2005-12-08 | ||
| JP2005354342A JP2006261095A (en) | 2005-02-15 | 2005-12-08 | Planar heater device |
| JP2005-037255 | 2006-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1826023A CN1826023A (en) | 2006-08-30 |
| CN1826023B true CN1826023B (en) | 2010-05-12 |
Family
ID=37100074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100076186A Expired - Fee Related CN1826023B (en) | 2005-02-15 | 2006-02-15 | Flat shape heater equipment |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006261095A (en) |
| CN (1) | CN1826023B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5983495B2 (en) * | 2013-03-28 | 2016-08-31 | 株式会社デンソー | Radiation heater device |
| CN105657872B (en) | 2014-11-28 | 2020-07-14 | 日本碍子株式会社 | Infrared heater and infrared processing device |
| JP5721897B1 (en) * | 2014-11-28 | 2015-05-20 | 日本碍子株式会社 | Infrared treatment device and infrared heater |
| KR101691008B1 (en) * | 2015-05-22 | 2016-12-29 | 주식회사 대영초음파 | A hot-wire for the vibration welder |
| WO2018079386A1 (en) | 2016-10-24 | 2018-05-03 | 日本碍子株式会社 | Infrared heater |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475243Y (en) * | 2001-04-02 | 2002-01-30 | 李明海 | Convection radiation electric heating plate for heating air |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5429114Y2 (en) * | 1973-09-28 | 1979-09-17 | ||
| JPS5737436Y2 (en) * | 1974-08-14 | 1982-08-18 | ||
| JPH0128738Y2 (en) * | 1980-04-17 | 1989-09-01 | ||
| JPS57104487U (en) * | 1980-12-19 | 1982-06-28 | ||
| JPS5834392U (en) * | 1981-08-31 | 1983-03-05 | 東芝熱器具株式会社 | heating element device |
| JPS58142884U (en) * | 1982-03-23 | 1983-09-26 | 日立電線株式会社 | Laying structure of planar heating wires |
| JPS6014787A (en) * | 1983-07-04 | 1985-01-25 | 松下電器産業株式会社 | Heater |
| JPS63310588A (en) * | 1987-06-11 | 1988-12-19 | Tonichi Denki Kk | Heater panel of microwave oven and manufacture thereof |
| JPH0945465A (en) * | 1995-07-31 | 1997-02-14 | Teikoku Piston Ring Co Ltd | Radiation heating device |
| JP2004311321A (en) * | 2003-04-10 | 2004-11-04 | Hitachi Hometec Ltd | Heating element |
-
2005
- 2005-12-08 JP JP2005354342A patent/JP2006261095A/en active Pending
-
2006
- 2006-02-15 CN CN2006100076186A patent/CN1826023B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475243Y (en) * | 2001-04-02 | 2002-01-30 | 李明海 | Convection radiation electric heating plate for heating air |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1826023A (en) | 2006-08-30 |
| JP2006261095A (en) | 2006-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1826023B (en) | Flat shape heater equipment | |
| US7003014B2 (en) | Electric heater for thermal treatment furnace | |
| KR102224630B1 (en) | Heating device | |
| EP1988750A1 (en) | Planar heater | |
| US8987643B2 (en) | Ceramic monolith and an electric heating device incorporating the said monolith | |
| US20080083733A1 (en) | Radiant heater | |
| US7829826B2 (en) | Electric heater for a clothes dryer | |
| EP2288230A1 (en) | Heating element unit and heating device | |
| JP5379024B2 (en) | Electric furnace insert | |
| US20100237059A1 (en) | Resistive heating element for electrical heating | |
| US7539401B2 (en) | Heating unit and resin sheet heating apparatus | |
| US8987641B2 (en) | High performance heater | |
| EP1011296B1 (en) | System for fixing the heating resistance in a cooker plate | |
| US20110052283A1 (en) | Heat generating unit and heating apparatus | |
| US6437298B1 (en) | Flat resistance for heating a cooking plate | |
| CN216930337U (en) | Heating core | |
| JP3603171B2 (en) | Electric heating unit | |
| CN214708085U (en) | Heating rack | |
| US4450343A (en) | High output, long duration, quick response, radiant electrical heater | |
| CN210899671U (en) | Heating ring easy to curl and position | |
| KR20070028889A (en) | Combination structure of plate heater | |
| CN218566188U (en) | Heating furnace body structure | |
| CN211062696U (en) | Heating mechanism of packaging machine | |
| JPH0718447A (en) | Heat treating device | |
| KR200224406Y1 (en) | Band heater structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |