CN1458422A - Vortex compressor - Google Patents
Vortex compressor Download PDFInfo
- Publication number
- CN1458422A CN1458422A CN03136733A CN03136733A CN1458422A CN 1458422 A CN1458422 A CN 1458422A CN 03136733 A CN03136733 A CN 03136733A CN 03136733 A CN03136733 A CN 03136733A CN 1458422 A CN1458422 A CN 1458422A
- Authority
- CN
- China
- Prior art keywords
- rotary part
- scrollwork
- rotary
- scroll
- rotary vortex
- 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.)
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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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
- H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
- H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
- H05B41/2325—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
To provide a scroll compressor constructed for simplification and low cost when using carbon dioxide as refrigerant and having high efficiency and high reliability. A fixed scroll part is formed of ferrous metal material, and a turning scroll part is formed of aluminium system metallic material. A predetermined back pressure is applied to a back surface of the turning scroll part to press it against the fixed scroll part.
Description
Technical field
The present invention relates to a kind of scroll compressor, this scroll compressor makes the scrollwork engagement of the scrollwork and the rotary vortex rotary part of fixed scroll member, form pressing chamber, utilizing the rotation constraint mechanism to carry out making under the state of rotation constraint rotary vortex rotary part when circular track rotates, pressing chamber moves while changing volume, thus carry out fluid suction, compression, and discharge.
Background technique
As the hermetic type compressor of cooling air conditioner, reciprocating type, rotary type, and eddy type are arranged, these modes all at family expenses, professionally be applied with field of Refrigeration and Air-conditioning.Now, make full use of its feature respectively and developed at cost, aspect of performance etc.
Wherein, the compressor that compressing mechanism and motor drive mechanism is contained in container with realize noise prevention and non-maintaining be that the hermetic type compressor of purpose is more representative, scroll compressor and rotary compressor are main flow.Scroll compressor generally makes the scrollwork engagement of the scrollwork and the rotary vortex rotary part of fixed scroll member, form pressing chamber, utilizing the rotation constraint mechanism to carry out making under the state of rotation constraint rotary vortex rotary part when circular track rotates, pressing chamber moves while changing volume, thus carry out fluid suction, compression, and discharge.In addition, applying authorized pressure as the back side with the scrollwork opposing face of rotary vortex rotary part, rotary vortex rotary part can not leave and overturns from fixed scroll member.
In addition, the material both sides that constitute the fixed scroll member of scroll compressor and rotary vortex rotary part use the iron system based on cast iron, or both sides use aluminium system, or fixed scroll member uses iron system, and rotary vortex rotary part uses aluminium to be.
Yet with the occasion of carbon dioxide as refrigeration agent, the head pressure of compressor is high side pressure about more than 7～10 times who with fluorine Lyons is the existing refrigeration cycle of refrigeration agent.For this reason, when rotary vortex rotary part being applied when making rotary vortex rotary part not from back pressure that fixed scroll member is drawn back, rotary vortex rotary part is pressed in fixed scroll member forcefully, causes the inordinate wear of vortex slide part and input to increase.
Therefore, with carbon dioxide as in the scroll compressor of refrigeration agent, when rotary vortex rotary part and fixed scroll member are the occasion of same metal, have the deadlocked problem of generating heat that when pushing forcefully, is easy to by back pressure.
On the other hand, in the scroll compressor that is recorded in TOHKEMY 2000-186680 communique, be provided with the axial force countercheck mechanism that acceptance acts on the pushing force of rotary vortex rotary part.The axial force countercheck mechanism is by constituting at a direction columned the 1st rotor that keeps pivotally and columned the 2nd rotor that can keep pivotally in the direction with this direction orthogonal.Constitute according to this, can increase the area of contact of rotor, so, the durability of compressor can be improved.Yet, owing to constitute with a plurality of parts, so, the increase of the increase of noise and cost when causing moving.
In the scroll compressor that is recorded in TOHKEMY 2001-207979 communique, Topland in the scroll wraps of scroll element forms the tip seal groove that contacts with the end plate of the other side's side slidably, tip seal is installed therein, to reduce leakage from Topland.Yet, in the scroll compressor of carbon dioxide as refrigeration agent, the problem that the slippage loss that exists the back pressure height that the tip seal contact is caused increases.
In addition, with carbon dioxide as in the scroll compressor of refrigeration agent, the refrigeration of per unit volume is about 3 times with fluorine Lyons is compared as the refrigeration of the existing refrigeration cycle of refrigeration agent.In the hermetic type compressor that compressing mechanism and motor drive mechanism is contained in the container, when at the good frequency field service meter structure of efficient, making and sucking volume is about 1/3rd.
In the scroll compressor of Japanese kokai publication hei 7-197891 communique record, scroll wraps for rotary vortex rotary part or fixed scroll member, adjustment from the bottom of the tooth of end plate to the height dimension of tooth top, under assembled state, between at the bottom of the tooth top of each scroll wraps and the other side's the tooth, be formed on such axial clearance that interior all sides become maximum, or change by the multistage stepped axial clearance that makes according to the result of the temperature distribution of measuring Topland, form the gap.
Yet, reducing compressor self, making the suction volume be about 1/3rd occasion, the size of the scroll wraps of rotary vortex rotary part or fixed scroll member also is about 1/3rd, process difficulty, the problem that exists motor efficiency further to descend by multistage stepped change axial clearance ground.In addition, make the scrollwork height be about 1/3rd, make and suck volume and be about 1/3rd occasion, when the temperature-resistant high low cruise of central part etc., it is big that the axial clearance of central part becomes, and has the big problem of leakage loss.
Summary of the invention
The problem that the present invention exists in view of above-mentioned prior art and making, its purpose be to provide a kind of with carbon dioxide as the occasion of refrigeration agent by constituting the scroll compressor that also can obtain high efficiency and high reliability simply, cheaply.
The scroll compressor of a first aspect of the present invention makes the scrollwork engagement of the scrollwork and the rotary vortex rotary part of fixed scroll member, form compression volume, utilizing the rotation constraint mechanism to carry out making under the state of rotation constraint above-mentioned rotary vortex rotary part when circular track rotates, above-mentioned pressing chamber moves while changing volume, thereby sucks, compresses, reaches and discharge; It is characterized in that: use carbon dioxide as refrigeration agent, form the said fixing scroll element by the Ferrious material material, form above-mentioned rotary vortex rotary part by the aluminum-based metal material, the back side at above-mentioned rotary vortex rotary part applies authorized pressure, and this rotary vortex rotary part is pressed to the said fixing scroll element.
A second aspect of the present invention also has such feature on the basis of the scroll compressor of first aspect: between the bottom surface of the scrollwork of the front end of the scrollwork of above-mentioned rotary vortex rotary part and said fixing scroll element the gap is set.
A third aspect of the present invention also has such feature on the basis of the scroll compressor aspect first or two: the height of the scrollwork of above-mentioned rotary vortex rotary part is at more than 99.8% and less than 100% of height of the scrollwork of said fixing scroll element.
Description of drawings
Fig. 1 is the sectional view that the scroll compressor of one embodiment of the invention is shown.
Fig. 2 illustrates this embodiment's the fixed scroll member and the sectional view of rotary vortex rotary part.
Fig. 3 illustrates this embodiment's the fixed scroll member and the sectional view of rotary vortex rotary part.
Embodiment
The scroll compressor of the 1st form of implementation of the present invention uses carbon dioxide as refrigeration agent, form fixed scroll member by the Ferrious material material, form rotary vortex rotary part by the aluminum-based metal material, the back side at rotary vortex rotary part applies authorized pressure, and this rotary vortex rotary part is pressed to fixed scroll member.According to this form of implementation, form fixed scroll member by the Ferrious material material, form rotary vortex rotary part by the aluminum-based metal material, so, even forcefully this rotary vortex rotary part is pressed to fixed scroll member, also can suppress inordinate wear, the not heating glue operation that lands.In addition, be that member forms by rotary vortex rotary part by aluminium, so, the centrifugal force of the drive portion in the time of can reducing high speed operation, and durability is good, can reduce slippage loss.In addition, owing to do not increase number of components, so, can reduce cost in the quiet sound property when not damaging operation.
The 2nd form of implementation of the present invention is provided with the gap between the bottom surface of the scrollwork of the front end of the scrollwork of rotary vortex rotary part and fixed scroll member on the basis of the scroll compressor of the 1st form of implementation.According to this form of implementation, can reduce from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the effect that performance improves and reliability is guaranteed of compressor simultaneously.
The 3rd form of implementation is on the basis of the scroll compressor of the 1st or the 2nd form of implementation, and the height of scrollwork that makes rotary vortex rotary part is at more than 99.8% and less than 100% of height of the scrollwork of fixed scroll member.According to this form of implementation, can reduce from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the further raising of performance of compressor and the effect that reliability is guaranteed simultaneously.
(embodiment)
Fig. 1 is the sectional view of the scroll compressor of one embodiment of the invention, and Fig. 2 and Fig. 3 are the sectional view of wanting portion of this embodiment's scroll compressor.
The refrigerant gas that sucks from suction pipe 1 passes through the suction chamber 3 of the fixed scroll member 2 that is made of scroll wraps 2a and end plate 2b, be sealing into and the rotary vortex rotary part 4 that constitutes by scroll wraps 4a and end plate 4b between engagement and the pressing chamber 5 that forms, reduce volume on one side towards the center and be compressed on one side, discharge from exhaust port 6.Surround the back pressure chamber 8 that forms by fixed scroll member 2 and bearing 7 and have the back pressure that makes the degree that rotary vortex rotary part 4 do not drawn back from fixed scroll member 2.Back pressure regulating mechanism 9 is provided with valve 11 at the path 10 from the internal communication of back pressure chamber 8 by fixed scroll member 2 to suction chamber 3, when the pressure of back pressure chamber 8 becomes higher than setting pressure, valve 11 is opened, and the oil of back pressure chamber 8 supplies to suction chamber 3, will be maintained to certain intermediate pressure in the back pressure chamber.Apply above-mentioned middle power at the back side of rotary vortex rotary part 4, prevent that fixed scroll member 2 and rotary vortex rotary part 4 from leaving, leaking in this part.In addition, the oil that supplies to suction chamber 3 moves towards pressing chamber 5 with rotatablely moving, and plays the effect that prevents the leakage between pressing chamber.
At this moment, fixed scroll member 4 is formed by ferrous material, and rotary vortex rotary part 2 is formed by the aluminium based material.In the occasion of using carbon dioxide as refrigeration agent, the head pressure of compressor is high side pressure about more than 7～10 times of the existing refrigeration cycle during as refrigeration agent with fluorine Lyons.For this reason, when applying the back pressure that makes the degree that rotary vortex rotary part 2 do not draw back from fixed scroll member 4, rotary vortex rotary part 2 is pressed to fixed scroll member 4 forcefully.Maximum pushing force with fluorine Lyons is compared as the existing occasion of refrigeration agent, be about 2.5 times.In the refrigeration agent atmosphere of carbon dioxide, refrigerating machine oil is in therebetween, and the pushing ferrous material is compared up to about more than 2 times with the deadlocked load of the heating of the occasion of aluminium based material with the deadlocked load of the heating of the occasion of mutual pushing ferrous material.
For this reason, in the present embodiment, by form fixed scroll member 4 by ferrous material, form rotary vortex rotary part 2 by the aluminium based material, even in the occasion that carbon dioxide is used as refrigeration agent, also can guarantee with in the past with the occasion equal reliability of fluorine Lyons as refrigeration agent, can suppress inordinate wear, the heating glue operation that lands not occur.
In addition, in the present embodiment, owing to the aluminium based material formation rotary vortex rotary part of using than the light specific gravity of iron 2, so, the centrifugal force of the drive portion in the time of can reducing high speed operation, and durability is good, can reduce slippage loss.In addition, owing to do not increase number of components, so, can reduce cost in the quiet sound property when not damaging operation.
In addition, in the present embodiment, as shown in Figure 3, between the bottom surface of the front end of the scroll wraps 4a of rotary vortex rotary part 4 and fixed scroll member 2, the gap is set.
As present embodiment with carbon dioxide as the occasion of refrigeration agent, the refrigeration of per unit volume is about 3 times with fluorine Lyons is compared as the refrigeration of the existing refrigeration cycle of refrigeration agent.In the hermetic type compressor that compressing mechanism and motor drive mechanism is contained in the container, when at the good frequency field service meter structure of efficient, making and sucking volume is about 1/3rd.In addition, each pressing chamber that is formed between fixed scroll member 2 and the rotary vortex rotary part 4 produces the heat of compression by carrying out compression, and this heat makes each scroll element become high temperature.This temperature rises and makes each scroll wraps produce thermal expansion, and the gap size of the axial clearance of each scroll wraps that particularly is positioned at the center side that becomes high temperature during than assembling is little, and the Topland of each scroll wraps contacts with at the bottom of the tooth of each end plate.In addition, when surface of contact press to increase, take place deadlockedly mutually, possible each end plate and each scroll wraps produce damage, have the compression efficiency as compressor, the problem of durability decline.
Yet, the scroll wraps height be about 1/3rd, to suck volume be about 1/3rd occasion, the variation in the gap that thermal expansion produces becomes 1/3rd approximately, though the Topland that is equipped with scroll wraps not with contact or contacts its surface of contact pressure at the bottom of the tooth of each end plate and also do not increase, do not take place deadlocked etc.
In addition, the refrigeration agent viscosity in the compression of the carbon dioxide way is in a ratio of about 1.4 times with chlorofluoromethane refrigerant viscosity in the past, so for the same axial gap, leakage also reduces about more than 30%.
Promptly, in the occasion of using carbon dioxide as refrigeration agent, the present embodiment that the gap of the scrollwork front end of fixed scroll member 2 and fixed scroll member bottom surface is set reduces from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the effect that performance improves and reliability is guaranteed of compressor simultaneously.
In addition, the height of scroll wraps 2a by making rotary vortex rotary part 2 is at more than 99.8% and less than 100% of height of the scroll wraps 4a of fixed scroll member 4, can reduce from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the further raising of performance of compressor and the effect that reliability is guaranteed simultaneously.
By the foregoing description as can be known, the present invention forms fixed scroll member by the Ferrious material material, forms rotary vortex rotary part by the aluminum-based metal material, so, even forcefully this rotary vortex rotary part is pressed to fixed scroll member, also can suppress inordinate wear, the not heating glue operation that lands.In addition, the centrifugal force of the drive portion in the time of can reducing high speed operation, and also durability is good, can reduce slippage loss.In addition, owing to do not increase number of components, so, can reduce cost in the quiet sound property when not damaging operation.
In addition, the present invention is by being provided with the gap between the bottom surface of the scrollwork front end of rotary vortex rotary part and fixed scroll member, can reduce from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the effect that performance improves and reliability is guaranteed of compressor simultaneously.
In addition, the height of the scrollwork of the present invention by making rotary vortex rotary part is at more than 99.8% and less than 100% of height of the scrollwork of fixed scroll member, can reduce from the leakage loss of the Topland of each scroll wraps, and prevent Topland deadlocked etc. of each scroll wraps, can obtain the further raising of performance of compressor and the effect that reliability is guaranteed simultaneously.
Claims (3)
1. scroll compressor, make the scrollwork engagement of the scrollwork and the rotary vortex rotary part of fixed scroll member, form compression volume, utilizing the rotation constraint mechanism to carry out making under the state of rotation constraint above-mentioned rotary vortex rotary part when circular track rotates, above-mentioned pressing chamber moves while changing volume, thereby sucks, compresses, reaches and discharge; It is characterized in that: use carbon dioxide as refrigeration agent, form the said fixing scroll element by the Ferrious material material, form above-mentioned rotary vortex rotary part by the aluminum-based metal material, the back side at above-mentioned rotary vortex rotary part applies authorized pressure, and this rotary vortex rotary part is pressed to the said fixing scroll element.
2. scroll compressor according to claim 1 is characterized in that: between the bottom surface of the scrollwork of the front end of the scrollwork of above-mentioned rotary vortex rotary part and said fixing scroll element the gap is set.
3. scroll compressor according to claim 1 and 2 is characterized in that: the height of the scrollwork of above-mentioned rotary vortex rotary part is at more than 99.8% and less than 100% of height of the scrollwork of said fixing scroll element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002139649A JP2003328966A (en) | 2002-05-15 | 2002-05-15 | Scroll compressor |
| JP139649/2002 | 2002-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458422A true CN1458422A (en) | 2003-11-26 |
| CN100340767C CN100340767C (en) | 2007-10-03 |
Family
ID=29544898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03136733XA Expired - Lifetime CN100340767C (en) | 2002-05-15 | 2003-05-15 | Vortex compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003328966A (en) |
| KR (1) | KR20030088876A (en) |
| CN (1) | CN100340767C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400887C (en) * | 2003-12-24 | 2008-07-09 | 松下电器产业株式会社 | Screw compressor |
| CN102052311A (en) * | 2009-10-30 | 2011-05-11 | 日立空调·家用电器株式会社 | Scroll compressor |
| CN101660528B (en) * | 2008-08-29 | 2012-05-30 | 日立空调·家用电器株式会社 | Scroll compressor |
| CN101165350B (en) * | 2006-10-20 | 2012-09-05 | 日立空调·家用电器株式会社 | Vortex compressor |
| CN107313930A (en) * | 2016-04-26 | 2017-11-03 | Lg电子株式会社 | Scroll compressor |
| CN108571450A (en) * | 2017-03-10 | 2018-09-25 | 株式会社丰田自动织机 | Vehicular electric compressor |
| CN113685355A (en) * | 2021-08-24 | 2021-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compression structure, compressor and air conditioner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230094763A (en) | 2021-12-21 | 2023-06-28 | 엘지전자 주식회사 | Scroll compressor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04136492A (en) * | 1990-09-28 | 1992-05-11 | Kubota Corp | Scroll for scroll compressor |
| JP3509299B2 (en) * | 1995-06-20 | 2004-03-22 | 株式会社日立製作所 | Scroll compressor |
| JP3658831B2 (en) * | 1996-02-09 | 2005-06-08 | 松下電器産業株式会社 | Scroll compressor |
| KR100343688B1 (en) * | 1999-10-04 | 2002-07-19 | 엘지전자주식회사 | Gas-pressure bypass structure for scroll compressor |
| JP2001304146A (en) * | 2000-04-20 | 2001-10-31 | Fujitsu General Ltd | Scroll type compressor |
| JP2002021753A (en) * | 2000-07-11 | 2002-01-23 | Fujitsu General Ltd | Scroll compressor |
| JP2002225958A (en) * | 2001-01-25 | 2002-08-14 | Hiroyasu Yamamoto | Attachable tissue paper packaging bag |
| JP2002235679A (en) * | 2001-02-09 | 2002-08-23 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
-
2002
- 2002-05-15 JP JP2002139649A patent/JP2003328966A/en active Pending
-
2003
- 2003-05-13 KR KR10-2003-0030127A patent/KR20030088876A/en not_active Application Discontinuation
- 2003-05-15 CN CNB03136733XA patent/CN100340767C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100400887C (en) * | 2003-12-24 | 2008-07-09 | 松下电器产业株式会社 | Screw compressor |
| CN101165350B (en) * | 2006-10-20 | 2012-09-05 | 日立空调·家用电器株式会社 | Vortex compressor |
| CN101660528B (en) * | 2008-08-29 | 2012-05-30 | 日立空调·家用电器株式会社 | Scroll compressor |
| CN102052311A (en) * | 2009-10-30 | 2011-05-11 | 日立空调·家用电器株式会社 | Scroll compressor |
| CN107313930A (en) * | 2016-04-26 | 2017-11-03 | Lg电子株式会社 | Scroll compressor |
| US10724521B2 (en) | 2016-04-26 | 2020-07-28 | Lg Electronics Inc. | Scroll compressor with wrap having gradually decreasing thickness |
| US11668303B2 (en) | 2016-04-26 | 2023-06-06 | Lg Electronics Inc. | Scroll compressor with wrap having gradually decreasing thickness |
| CN108571450A (en) * | 2017-03-10 | 2018-09-25 | 株式会社丰田自动织机 | Vehicular electric compressor |
| CN108571450B (en) * | 2017-03-10 | 2020-04-03 | 株式会社丰田自动织机 | Electric compressor for vehicle |
| CN113685355A (en) * | 2021-08-24 | 2021-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Compression structure, compressor and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030088876A (en) | 2003-11-20 |
| JP2003328966A (en) | 2003-11-19 |
| CN100340767C (en) | 2007-10-03 |
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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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071003 |