CN202117739U - Resistant/retardant combined type exhaust muffler - Google Patents
Resistant/retardant combined type exhaust muffler Download PDFInfo
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- CN202117739U CN202117739U CN2011202281745U CN201120228174U CN202117739U CN 202117739 U CN202117739 U CN 202117739U CN 2011202281745 U CN2011202281745 U CN 2011202281745U CN 201120228174 U CN201120228174 U CN 201120228174U CN 202117739 U CN202117739 U CN 202117739U
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Abstract
The utility model relates to the field of exhaust muffling equipment, in particular to a resistant/retardant combined type exhaust muffler. The resistant/retardant combined type exhaust muffler comprises a resistant muffler and a retardant muffler, wherein the resistant muffler consists of a first concentric reducer, a resonant tube, a second concentric reducer, a first fixing ring and a second fixing ring; a high-temperature resistant material layer which is made of perforated boiler steel is arranged on the inwall of the resistant muffler; the retardant muffler consists of a liner tube, a muffling block shell, a porous fireproof muffling block made from superfine glass fiber and high-temperature rock wool, a fixing plate and a third concentric reducer; and the muffling block is placed inside the muffling block shell. Compared with the prior art, the resistant/retardant combined type exhaust muffler provided by the utility model has the characteristics of capability of working under high-temperature environments, capability of effectively lowering noises of high frequency, middle frequency and low frequency which are generated by an internal combustion engine unit and ensuring the exhaust smoothness of the internal combustion engine unit, stable structure, difficulty for deformation and the like.
Description
Technical field
The utility model relates to the exhaust noise silencing apparatus field, particularly relates to a kind of impedance complex formula muffler.
Background technique
Baffler is mounted on the air-flow path of aerodynamic force equipment (like internal-combustion engine, blower and air compressor) or the device of the reduction noise in the inlet and exhaust system.Baffler can stop the propagation of sound wave, allows the air communication mistake, is the effective tool of control noise.
The kind of baffler is a lot, but studies carefully its noise elimination mechanism, can be divided into six kinds of main types to them again, promptly resistive baffler, resistant noise-reducing device, impedance complex formula baffler, microperforated panel baffler, aperture baffler and active baffler.
Resistive baffler is mainly eliminated high frequency noise, is the sound absorption that utilizes sound absorbing material, makes along the noise of channels spread constantly to be absorbed and decay gradually.Be fixed on sound absorbing material around the tube wall that air communication crosses, or in passage, arrange by certain way.In sound wave gets into baffler, can cause air and fiber vibration in the inner porous material of resistive baffler, under the acting in conjunction of frictional resistance and viscous resistance, make part acoustic energy be converted into heat energy and lose, thereby reach the purpose of noise reduction.
The resistant noise-reducing device is to be combined by the pipe of abrupt interface and chamber, and is similar with electrical filter, and the cell of each band pipe all has the natural frequency of oneself.When the sound wave that includes various frequency contents gets into first short tube; Only near the sound wave of some frequency first mesh natural frequency could pass through second short tube mouth of mesh arrival; The sound wave of other frequency then can not can only come back reflective through mesh in cell.Choosing suitable pipe and chamber makes up. and just can filter the noise of some frequency content, thereby reach the purpose of noise elimination.The resistant noise-reducing device is applicable in the elimination, low-frequency noise.
Combine resistive structure and resistance structure according to certain mode, just constituted impedance complex formula baffler.
In the existing technology; The exhaust noise silencing effect of the muffler of large combustion unit is not ideal enough; It is big that its reason is attributed to the needed muffler weight of large combustion machine; Volume is big, and is operated in hot environment, and this just requires the general structure of muffler big at pressure, vibrates strongly and be not easy under the working environment of high temperature distortion; On the other hand, existing technology generally adopts constant temperature or low temperature quieter material, and this type of material is short the working life under hot environment, has wasted many human and material resources and financial resources thereby cause changing quieter material; In addition,, take to use the mode of two bafflers to strengthen erasure effect usually, cause having strengthened the cost input because erasure effect is bad.
Therefore; To the problem that exists in the existing technology; Needing badly provides a kind of and can work in hot environment; Can effectively reduce senior middle school's low frequency noise that the internal combustion unit is produced significantly, and can keep the exhaust of internal combustion unit smooth and easy, structure firmly, the impedance complex formula muffler of not yielding, long service life.
Summary of the invention
The purpose of the utility model is to avoid deficiency of the prior art and a kind of impedance complex formula muffler is provided; This impedance complex formula muffler has can work in hot environment; Can effectively reduce senior middle school's low frequency noise that the internal combustion unit is produced significantly; And can keep the exhaust of internal combustion unit smooth and easy, structure firmly, characteristics such as not yielding.
The purpose of the utility model realizes through following technical measures.
A kind of impedance complex formula muffler is provided, comprises resistant noise-reducing device and resistive baffler, said resistant noise-reducing device connects said resistive baffler, is provided with the 3rd retaining ring between said resistant noise-reducing device and the said resistive baffler; Said resistant noise-reducing device is made up of first microcephaly, resonantron, second largest microcephaly, first retaining ring and second retaining ring; Said first microcephaly comprises little one of internal diameter big and internal diameter; Said second largest microcephaly comprises little one of internal diameter big and internal diameter; The internal diameter with said resonantron is identical respectively for little one of said first microcephaly's internal diameter little and second largest microcephaly's internal diameter; One of connecting said resonantron of said first microcephaly's internal diameter little; The other end of said resonantron connects little one of said second largest microcephaly's internal diameter, and said first retaining ring, second retaining ring are arranged on the outer wall of said resonantron, and said resistant noise-reducing device inwall is provided with the exotic material layer of being processed by boiler steel with holes; Said resistive baffler comprises that internal lining pipe, silencing block shell, the silencing block, fixed plate and the third-largest microcephaly that process the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool form; Said the third-largest microcephaly comprises little one of internal diameter big and internal diameter; An end face of said internal lining pipe is connected with an end face of said the 3rd retaining ring; One that another end face of said internal lining pipe and said the third-largest microcephaly's internal diameter are big is connected; Said silencing block shell is positioned over said internal lining pipe inside, and said fixed plate is arranged between the said silencing block shell, and said silencing block is positioned over said silencing block enclosure.
Preferably, said silencing block is fixed on the inwall of said silencing block shell through punched-plate.
Another is preferred, and said silencing block shell vertically is evenly arranged in internal lining pipe inside from top to bottom.
Preferably, also be provided with silencer casing, it is inner that said resonantron, second largest microcephaly, internal lining pipe and the third-largest microcephaly all are positioned over said silencer casing.
Another is preferred, also is provided with first end plates and second end plates, and said first end plates are fixed on an end of said silencer casing, and said second end plates are fixed on another end of said silencer casing.
Preferably; Said resistant noise-reducing device also is provided with first stiffening plate; Said resistive baffler also is provided with second stiffening plate, and a cross section of said first stiffening plate is connected with said first microcephaly's outer wall, and another cross section of said first stiffening plate is connected with said first end plates; A cross section of said second stiffening plate is connected with said second end plates.
Preferred, said first stiffening plate and second stiffening plate are provided with two or more.
Preferably, said silencing block shell is provided with two or more, and accordingly, said silencing block is provided with two or more.
Preferably, said resistive baffler also is provided with steam outlet pipe, and an end face of said steam outlet pipe is connected with a little end face of said the third-largest microcephaly's internal diameter.
Another is preferred, and the resistant noise-reducing device also is provided with first flange, and said first flange connects big one of said first microcephaly's internal diameter; Said resistive baffler also is provided with second flange, and said second flange connects another end face of said steam outlet pipe.
The beneficial effect of the utility model: a kind of impedance complex formula muffler of the utility model, comprise resistant noise-reducing device and resistive baffler, the resistant noise-reducing device connects resistive baffler, is provided with the 3rd retaining ring between resistant noise-reducing device and the resistive baffler; The resistant noise-reducing device is made up of first microcephaly, resonantron, second largest microcephaly, first retaining ring and second retaining ring; First microcephaly comprises little one of internal diameter big and internal diameter; Second largest microcephaly comprises little one of internal diameter big and internal diameter; The internal diameter with resonantron is identical respectively for little one of first microcephaly's internal diameter little and second largest microcephaly's internal diameter, first microcephaly's internal diameter is little one connect resonantron one, the other end of resonantron connects little one of second largest microcephaly's internal diameter; First retaining ring, second retaining ring are arranged on the outer wall of resonantron, and resistant noise-reducing device inwall is provided with the exotic material layer of being processed by boiler steel with holes; Resistive baffler comprises that internal lining pipe, silencing block shell, the silencing block, fixed plate and the third-largest microcephaly that process the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool form; The third-largest microcephaly comprises little one of internal diameter big and internal diameter; An end face of internal lining pipe is connected with an end face of the 3rd retaining ring; One that another end face of internal lining pipe and the third-largest microcephaly's internal diameter are big is connected; The silencing block shell is positioned over internal lining pipe inside, and fixed plate is arranged between the silencing block shell, and silencing block is positioned over the silencing block enclosure.
The utility model compared with prior art has can work in hot environment, can effectively reduce senior middle school's low frequency noise that the internal combustion unit is produced significantly, and can keep the exhaust of internal combustion unit smooth and easy, structure firmly, characteristics such as not yielding.
Description of drawings
Utilize accompanying drawing that the utility model is further specified, but the content in the accompanying drawing does not constitute any restriction to the utility model.
Fig. 1 is embodiment's the A-A schematic cross-section of a kind of impedance complex formula muffler of the utility model.
Fig. 2 is embodiment's the B-B schematic cross-section of a kind of impedance complex formula muffler of the utility model.
Fig. 3 is embodiment's the C-C schematic cross-section of a kind of impedance complex formula muffler of the utility model.
Fig. 4 is the enlarged diagram of the local A of Fig. 1.
Fig. 5 is the enlarged diagram of the local B of Fig. 1.
At Fig. 1; Fig. 2; Fig. 3; Include among Fig. 4 and Fig. 5: the 3rd retaining ring 1; First microcephaly 2; Resonantron 3 and second largest microcephaly 4; First retaining ring 5; Second retaining ring 6; Internal lining pipe 7; Silencing block shell 8; Process the silencing block 9 of porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool; Fixed plate 10; The third-largest microcephaly 11; Silencer casing 12; First end plates 13; Second end plates 14; First stiffening plate 15; Second stiffening plate 16; Steam outlet pipe 17; First flange 18; Second flange 19.
Embodiment
In conjunction with following examples the utility model is described further.
embodiment 1.
A kind of impedance complex formula muffler of present embodiment such as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5; Comprise resistant noise-reducing device and resistive baffler; The resistant noise-reducing device connects resistive baffler, is provided with the 3rd retaining ring 1 between resistant noise-reducing device and the resistive baffler; The resistant noise-reducing device is made up of first microcephaly 2, resonantron 3, second largest microcephaly 4, first retaining ring 5 and second retaining ring 6; First microcephaly 2 comprises little one of internal diameter big and internal diameter; Second largest microcephaly 4 comprises little one of internal diameter big and internal diameter; The internal diameter with resonantron 3 is identical respectively for little one of first microcephaly's 2 internal diameters little and second largest microcephaly's 4 internal diameters; One of connecting resonantron 3 of first microcephaly's 2 internal diameters little; The other end of resonantron 3 connects little one of second largest microcephaly's 4 internal diameters, and first retaining ring 5, second retaining ring 6 are arranged on the outer wall of resonantron 3, and resistant noise-reducing device inwall is provided with the exotic material layer of being processed by boiler steel with holes; Resistive baffler comprises that internal lining pipe 7, silencing block shell 8, the silencing block 9, fixed plate 10 and the third-largest microcephaly 11 that process the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool form; The third-largest microcephaly 11 comprises little one of internal diameter big and internal diameter; An end face of internal lining pipe 7 is connected with an end face of the 3rd retaining ring 1; One that another end face of internal lining pipe 7 and the third-largest microcephaly's 11 internal diameters are big is connected; Silencing block shell 8 is positioned over internal lining pipe 7 inside, and fixed plate 10 is arranged between the silencing block shell 8, and the silencing block 9 of being processed the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool is positioned over silencing block shell 8 inside.
By the resistant noise-reducing device that first microcephaly 2, resonantron 3 and second largest microcephaly 4, first retaining ring 5 and second retaining ring 6 are formed,, can eliminate the medium and low frequency noise effectively significantly owing to adopt the pipeline of abrupt interface; Owing to added first retaining ring 5 and second retaining ring 6, make that the resistant noise-reducing device is big at pressure, vibration is strong and the working environment of high temperature under be not easy to be out of shape, structure is firm; Because inner-walls of duct is welded with the exotic material layer of being processed by boiler steel with holes, makes the anti-erosion of whole pipe, the life-span is longer; Because silencing block shell 8 is positioned over internal lining pipe 7 inside, and arranges in passage by certain way, can keep the exhaust of internal combustion unit smooth and easy; Fixed plate 10 is arranged between the silencing block shell 8, plays and strengthens the fixedly effect of silencing block shell 8; Process the silencing block 9 of porous fire proofing material owing to adopt ultra-fine fibre glass and high-temperature rock-wool; Rock wool has good sound insulation and sound absorbing capabilities, and its sound absorbing mechanism is that this goods have cellular structure, when sound wave passes through; Because the effect of flow resistance produces friction; The part of acoustic energy is absorbed by fiber, and the moon has hindered the transmission of sound wave, thereby significantly eliminates high frequency noise effectively; And ultra-fine fibre glass has good insulating, heat resistance is strong, corrosion resistance good, and mechanical strength is high, wraps up high-temperature rock-wool with ultra-fine fibre glass, makes high-temperature rock-wool under the state of high temperature, be difficult for falling cotton, thereby reaches the purpose of long service life.
As preferred implementation, the silencing block 9 of processing the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool is fixed on the inwall of silencing block shell 8 through punched-plate.Punched-plate adopts boiler steel to process, and is not yielding under hot environment.
As preferred implementation, silencing block shell 8 vertically is evenly arranged in internal lining pipe 7 inside from top to bottom.The 8 orderly arrangements of silencing block shell can make I. C. engine exhaust smooth and easy.
A kind of impedance complex formula muffler of present embodiment, its working principle is: resistant noise-reducing device and resistive baffler merge as a whole.
Air-flow and sound wave at first get into the resistant noise-reducing device; Because being the pipeline by abrupt interface, the resistant noise-reducing device forms; Similar with electrical filter, each pipeline all has the natural frequency of oneself, when the sound wave that includes various frequency contents gets into first pipeline; Only near the sound wave of some frequency first mesh natural frequency could pass through second pipeline opening of mesh arrival; The sound wave of other frequency then can not can only come back reflective, thereby reach the purpose of noise elimination through mesh in pipeline.The resistant noise-reducing device is used for eliminating, low-frequency noise.
Resistive baffler is mainly eliminated high frequency noise, is the sound absorption that utilizes sound absorbing material, makes along the noise of channels spread constantly to be absorbed and decay gradually.Be fixed on sound absorbing material around the tube wall that air communication crosses, or in passage, arrange by certain way.In sound wave gets into baffler, can cause air and fiber vibration in the inner porous material of resistive baffler, under the acting in conjunction of frictional resistance and viscous resistance, make part acoustic energy be converted into heat energy and lose, thereby reach the purpose of noise reduction.
A kind of impedance complex formula muffler, present embodiment and embodiment's 1 difference is, also is provided with silencer casing 12, resonantron 3, second largest microcephaly 4, internal lining pipe 7 and the third-largest microcephaly 11 all are positioned over silencer casing 12 inside.The silencer casing 12 that is provided with can play and modify outward appearance, strengthen vibration proof ability and the effect of fixing whole other constituent elementss of impedance complex formula muffler better.
As preferred implementation, also be provided with the end that first end plates 13 and second end plates, 14, the first end plates 13 are fixed on silencer casing 12, second end plates 14 are fixed on another end of silencer casing 12.First end plates 13 that are provided with and second end plates 14 prevent that air-flow and sound wave from getting into from the gap between silencer casing 12 and the resistant noise-reducing organ pipe road, can also play the reinforcement fixation.
As preferred implementation; The resistant noise-reducing device also is provided with first stiffening plate 15; The cross section that resistive baffler also is provided with second stiffening plate, 16, the first stiffening plates 15 is connected with first microcephaly's 2 outer wall, and another cross section of first stiffening plate 15 is connected with first end plates 13; A cross section of second stiffening plate 16 is connected with second end plates 14.
As preferred implementation, first stiffening plate 15 and second stiffening plate 16 are provided with two or more.In the present embodiment, preferable scheme is: first stiffening plate 15 and second stiffening plate 16 are provided with eight, are evenly distributed on respectively on first end plates 13 and second end plates 14, play the reinforcement fixation better.
Other structures of present embodiment are identical with embodiment 1.
A kind of impedance complex formula muffler; Present embodiment and embodiment's 1 difference is that silencing block shell 8 is provided with two or more; Accordingly, the silencing block 9 of processing the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool is provided with two or more.In the present embodiment, preferable scheme is: silencing block shell 8 is provided with six, and accordingly, the silencing block 9 of being processed the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool is provided with six.Six silencing blocks 9 of being processed the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool are from top to bottom vertically arrangement in internal lining pipe 7 inside, can strengthen sound-absorbing effect, and guarantee that exhaust is smooth and easy.
Resistive baffler also is provided with steam outlet pipe 17, and an end face of steam outlet pipe 17 is connected with a little end face of the third-largest microcephaly's 11 internal diameters.The steam outlet pipe 17 that is provided with is used for exhaust.
The resistant noise-reducing device also is provided with first flange, 18, the first flanges 18 and connects big one of first microcephaly's 2 internal diameters; Resistive baffler also is provided with another end face that second flange, 19, the second flanges 19 connect steam outlet pipe 17.First flange 18 that is provided with and second flange 19 are convenient to being connected of impedance complex formula muffler and other equipment.
Other structures of present embodiment are identical with embodiment 1.
Should be noted that at last; Above embodiment only be used to explain the utility model technological scheme but not to the restriction of the utility model protection domain; Although the utility model has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model, and do not break away from the essence and the scope of the utility model technological scheme.
Claims (10)
1. an impedance complex formula muffler comprises resistant noise-reducing device and resistive baffler, and said resistant noise-reducing device connects said resistive baffler, it is characterized in that: be provided with the 3rd retaining ring between said resistant noise-reducing device and the said resistive baffler; Said resistant noise-reducing device is made up of first microcephaly, resonantron, second largest microcephaly, first retaining ring and second retaining ring; Said first microcephaly comprises little one of internal diameter big and internal diameter; Said second largest microcephaly comprises little one of internal diameter big and internal diameter; The internal diameter with said resonantron is identical respectively for little one of said first microcephaly's internal diameter little and second largest microcephaly's internal diameter; One of connecting said resonantron of said first microcephaly's internal diameter little; The other end of said resonantron connects little one of said second largest microcephaly's internal diameter, and said first retaining ring, second retaining ring are arranged on the outer wall of said resonantron, and said resistant noise-reducing device inwall is provided with the exotic material layer of being processed by boiler steel with holes; Said resistive baffler comprises that internal lining pipe, silencing block shell, the silencing block, fixed plate and the third-largest microcephaly that process the porous fire proofing material by ultra-fine fibre glass and high-temperature rock-wool form; Said the third-largest microcephaly comprises little one of internal diameter big and internal diameter; An end face of said internal lining pipe is connected with an end face of said the 3rd retaining ring; One that another end face of said internal lining pipe and said the third-largest microcephaly's internal diameter are big is connected; Said silencing block shell is positioned over said internal lining pipe inside, and said fixed plate is arranged between the said silencing block shell, and said silencing block is positioned over said silencing block enclosure.
2. a kind of impedance complex formula muffler according to claim 1, it is characterized in that: said silencing block is fixed on the inwall of said silencing block shell through punched-plate.
3. a kind of impedance complex formula muffler according to claim 1, it is characterized in that: said silencing block shell vertically is evenly arranged in internal lining pipe inside from top to bottom.
4. a kind of impedance complex formula muffler according to claim 1 is characterized in that: also be provided with silencer casing, it is inner that said resonantron, second largest microcephaly, internal lining pipe and the third-largest microcephaly all are positioned over said silencer casing.
5. a kind of impedance complex formula muffler according to claim 1; It is characterized in that: also be provided with first end plates and second end plates; Said first end plates are fixed on an end of said silencer casing, and said second end plates are fixed on another end of said silencer casing.
6. a kind of impedance complex formula muffler according to claim 5; It is characterized in that: said resistant noise-reducing device also is provided with first stiffening plate; Said resistive baffler also is provided with second stiffening plate; A cross section of said first stiffening plate is connected with said first microcephaly's outer wall, and another cross section of said first stiffening plate is connected with said first end plates; A cross section of said second stiffening plate is connected with said second end plates.
7. a kind of impedance complex formula muffler according to claim 6, it is characterized in that: said first stiffening plate and second stiffening plate are provided with two or more.
8. a kind of impedance complex formula muffler according to claim 1, it is characterized in that: said silencing block shell is provided with two or more, and accordingly, said silencing block is provided with two or more.
9. a kind of impedance complex formula muffler according to claim 1, it is characterized in that: said resistive baffler also is provided with steam outlet pipe, and an end face of said steam outlet pipe is connected with a little end face of said the third-largest microcephaly's internal diameter.
10. a kind of impedance complex formula muffler according to claim 9, it is characterized in that: the resistant noise-reducing device also is provided with first flange, and said first flange connects big one of said first microcephaly's internal diameter; Said resistive baffler also is provided with second flange, and said second flange connects another end face of said steam outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202281745U CN202117739U (en) | 2011-06-30 | 2011-06-30 | Resistant/retardant combined type exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202281745U CN202117739U (en) | 2011-06-30 | 2011-06-30 | Resistant/retardant combined type exhaust muffler |
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| Publication Number | Publication Date |
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| CN202117739U true CN202117739U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202281745U Expired - Fee Related CN202117739U (en) | 2011-06-30 | 2011-06-30 | Resistant/retardant combined type exhaust muffler |
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| Country | Link |
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| CN (1) | CN202117739U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230407A (en) * | 2011-06-30 | 2011-11-02 | 东莞市力宇燃气动力有限公司 | Resistance-and-reactance-compounded exhaust silencer |
| CN104405487A (en) * | 2014-11-20 | 2015-03-11 | 南车资阳机车有限公司 | Impedance composite muffler for internal combustion locomotives |
| CN110770511A (en) * | 2017-04-14 | 2020-02-07 | 弗劳恩霍夫应用研究促进协会 | Split muffler assembly with sound absorbing end sides |
-
2011
- 2011-06-30 CN CN2011202281745U patent/CN202117739U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230407A (en) * | 2011-06-30 | 2011-11-02 | 东莞市力宇燃气动力有限公司 | Resistance-and-reactance-compounded exhaust silencer |
| CN102230407B (en) * | 2011-06-30 | 2012-12-05 | 广东力宇新能源科技有限公司 | Resistance-and-reactance-compounded exhaust silencer |
| CN104405487A (en) * | 2014-11-20 | 2015-03-11 | 南车资阳机车有限公司 | Impedance composite muffler for internal combustion locomotives |
| CN110770511A (en) * | 2017-04-14 | 2020-02-07 | 弗劳恩霍夫应用研究促进协会 | Split muffler assembly with sound absorbing end sides |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG LIYU NEW ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DONGGUAN LIYU GAS POWER CO.,LTD. |
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| CP03 | Change of name, title or address |
Address after: 523935, Guangdong power Amperex Technology Limited, 88 Xin'an Road, East community, Humen Town, Dongguan, Guangdong Patentee after: Liyu New Energy Science & Technology Co., Ltd. Address before: 523228, Dongguan, Guangdong province Humen Town Road East Management Zone Xin'an Road 88, force woo industrial park, Dongguan city force gas power Co., Ltd. Patentee before: Dongguan Liyu Gas Power Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150630 |
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| EXPY | Termination of patent right or utility model |