CN104704292B - Compressed gas produces equipment - Google Patents
Compressed gas produces equipment Download PDFInfo
- Publication number
- CN104704292B CN104704292B CN201380051217.9A CN201380051217A CN104704292B CN 104704292 B CN104704292 B CN 104704292B CN 201380051217 A CN201380051217 A CN 201380051217A CN 104704292 B CN104704292 B CN 104704292B
- Authority
- CN
- China
- Prior art keywords
- compressed gas
- produces equipment
- combustion chamber
- gas according
- fuel
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C99/00—Subject-matter not provided for in other groups of this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/06—Systems for accumulating residues from different parts of furnace plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L11/00—Arrangements of valves or dampers after the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/99008—Unmixed combustion, i.e. without direct mixing of oxygen gas and fuel, but using the oxygen from a metal oxide, e.g. FeO
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/20—Intercepting solids by baffles
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of compressed gas, which produces equipment, includes combustion chamber (16), the combustion chamber is connected for high energy oxygen compound with least one as oxidant and/or combustible cpd as the storage container of fuel respectively via mixing chamber (17), to produce compressed gas.
Description
Technical field
Equipment is produced the present invention relates to a kind of compressed gas with combustion chamber.
Background technology
The known vane pump from practice, the vane pump has the rotary body being placed in the cylinder bore diameter of stator, i.e. rotor,
At least one radial oriented guider is introduced into the rotor to be moveably positioned revolving valve.The revolving valve by
Divided on four perisporiums that spring effect leans against cylinder bore diameter with its free end face, and by the space between stator and rotor
For two rooms.
In addition compressed gas generation device different known to professional, typically in the form of internal combustion engine, wherein generally defeated
It is not without a doubt for going out product and/or combustion product economically.
The content of the invention
The task that the present invention is based on is to realize that a kind of compressed gas for starting the type produces equipment, and it has simple
With the construction of robust and run with environment-friendly fuel.
Solved according to the task of the invention by the feature of independent claims.
Dependent claims are the advantageous configurations of the present invention.
Compressed gas, which produces equipment, includes combustion chamber, and the combustion chamber is used for oxidant with least one respectively via mixing chamber
And/or the storage container connection of fuel, to produce compressed gas.
Certain oxidant and fuel are placed in the storage container of separation.If solid, then in the form of crushing, example
Such as stored by grinding.
Preferably, oxidant is high energy oxygen compound, such as sodium chlorate or sodium perchlorate, and fuel is combustible cpd,
It is preferred that being made up of organic material, such as wood chip or charcoal powder.But can also be using dry excreta or biologic garbage etc., they
Exist with oxidant with mixed proportion that is suitable and can simply being determined for professional, the mixed proportion is for example
Including oxidant volume fraction and volume of fuel component.
Compressed gas produces equipment and worked with the oxidant of solid or liquid to be burnt in a combustion chamber to fuel,
Oxidant and fuel are just mixed in mixing chamber and reacted in the end of mixing chamber by lighting when needed.If
Solid fuel and solid oxidizer are preferably used, then is also to be relatively free of danger in the accident that there is uncontrolled burning
, if because the no fuel of oxidant would not react, and selected fuel and the oxygen from surrounding air are very
It is difficult to react.Therefore oxidant and fuel can only should also be as the place reaction of reaction at them, that is, in mixing chamber.If
Oxidant is present in air, then it is of course possible to taking out air from environment and do not need special storage container.
Simply it can be made as the sodium chlorate or sodium perchlorate of oxidant by salt, water and DC current
Make, wherein in the case of being burnt using sodium perchlorate compared with accumulating less waste under the response situation with sodium chlorate.
Any energy carrier, the energy carrier being especially made up of organic material, especially with the shape of crushing can be substantially used as fuel
Formula, for example, grind, shred or mince.It can for example use using coking, the decomposable family expenses of crushing or yard waste and as fuel.
Compressed gas produces equipment and can used as single unit from a large amount of different driver connections, at these
Compressed gas is used to mechanical energy in driver.For example in water or with the machine based on propulsive thrust, i.e. so-called spray
In the respective configuration of gas engine association, the ejection of compressed air can be used directly to driving vehicle or aircraft.
Produced used heat can be used to further produce pressure.
According to configuration, electric arc or especially is set by oxidant and the mixture of fuel composition in a combustion chamber in order to light
The auxiliary gas being made up of hydrogen and oxygen.Electric arc can be permanently present or exist only for lighting the mixture.Such as
Really this light should be by carrying out as the hydrogen and oxygen of auxiliary gas, then hydrogen can be manufactured in single electrolytic cell.
According to one kind extension, the filter of maze type is distributed to combustion chamber, the filter mainly includes metallic plate.Expansion
Compressed gas flow through the filter being made up of metallic plate, wherein these metallic plates are arranged to so that compressed gas pass through fan
The turning in palace is guided and not only to the heat of metallic plate output squeezing gas, but also isolates solid matter, described
Solid matter will not be deposited in the space between set for this, filter and blender.
In order to prevent uncontrollably guiding oxidant or fuel into mixing chamber, in mixing chamber and at least one storage
At least one check-valves is set between container, and the check-valves is preferably inserted into the connection for coupling mixing chamber with storage container and led to
In road.
Suitably, combustion chamber in outlet side by with treating that pressure controlled the valve opened closes.Preferably, the valve includes
At least two spring loaded valve flaps, the valve flap is kept in off position under magnet effect.Have always a demand for specific
Pressure, untill these valve flaps being magnetically maintained under relative configuration state are opened.Then compressed gas is higher
It is directed under pressure in gas compartment.
For switching to pressure, combustion chamber is coupled with the air admission hole of drive motor.Compressed gas produces equipment can be with office
Anticipate on the vehicles, such as land or marine communication means.
It should be appreciated that be previously noted and combination that the feature to be illustrated further below can not only be to illustrate respectively, and can also
Used with other combinations.The scope of the present invention is only limited by claim.
Brief description of the drawings
The present invention is explained in detail with reference to the figures by embodiment below.
Fig. 1 shows to produce the part of the signal for the vane machine that equipment is used for the compressed gas combined according to the present invention
Sectional view,
Fig. 2 shows the phantom of the signal of the compressed gas generation equipment for the vane machine according to Fig. 1, and
Fig. 3 shows that the compressed gas for the vane machine according to Fig. 2 produces the partial cross of equipment with the configuration replaced
Figure.
Embodiment
Vane machine includes the stator 1 with gas compartment 4, and the gas compartment has air admission hole 2 and venthole 3, in compressed gas
Body produces the compressed gas manufactured in equipment and flowed in the gas compartment, to have surrounding the rotary body 6 of blade 5 to be placed in rotation
Turn, wherein gas compartment 4 is divided into cell 7 by the blade 5.Each blade 5 has the foot part 8 of cylindrical section shape, the pin
Part can rotatably be placed in the opening 9 of the corresponding axial orientation of rotary body 6.From foot part 8s, blade 5 gradually comes to a point
Ground is from extending around part 10 to the end.Foot part 5 on the side that it is loaded by compressed gas generally speaking have from foot part 8 to
The lineal layout of head part 10, and on opposite side there is arc to be distributed.In order to which rotatable blade 5 is maintained at into effect
Position or operating position --- construction is leaned against in the active position or operating position in rotation away from the curved side of compressed gas
It is that each blade sets spring 12 in rotary body 6 on baffle plate 11 on body 6.These springs 12 are placed in rotary body 6 each other
Between star-like distribution hole 13 in, and be engaged in the region of foot part 8 of the blade 5 distributed on unfaithful intention cam 14.Due to
The cross section of gas compartment 4 is continually changing, and rotates to resting position to the active control of blade 5, blade is located in the resting position
In the corresponding space 16 of rotary body 6.
The combustion chamber 16 that the air admission hole 2 of stator 1 produces equipment with compressed gas is coupled, and the combustion chamber 16 is via mixing chamber 17
With at least one is unshowned, for fuel (especially wood chip or charcoal powder) and oxidant (especially sodium chlorate or perchloric acid
Sodium) storage container connection, with produce apply in vane machine with the compressed gas of driving rotating bodies 6.Mixing chamber 17 with
Between storage container, check-valves is inserted respectively into the interface channel 18 for oxidant and fuel, and the check-valves is prevented or real
The existing transport of oxidant or fuel from respective storage container to mixing chamber.Mixing chamber 17 is communicated to wherein lights bag by electric arc 20
The region of the mixture of oxidant and fuel is included, compressed gas is consequently formed.The residue accumulated in the burning is focused into combustion
In the free space 21 for burning room 16.Compressed gas flows through the filter 23 of the metallic plate 22 constituted including maze type, to reach
The outlet 24 of combustion chamber 16 and the air admission hole 2 being connected with the outlet for reaching stator 1, wherein isolating it in the filter
Its combustion residue.The outlet 24 of certain combustion chamber 16 can be coupled with multiple air admission holes 2, wherein can also be using Valve controlling dress
Put, to be turned on and off the alternate flow channel for compressed gas.
In a kind of configuration of replacement, exist between combustion chamber 16 and outlet 24 and treat pressure controlled with valve flap 26
The valve 25 that ground is opened, the valve flap is being deposited on the one hand by spring pressurization on the other hand equipped with magnet assembly 27 with realizing
The closing just opened in the case of specific air pressure.
Reference numerals list
1. stator
2. air admission hole
3. venthole
4. gas compartment
5. blade
6. rotary body
7. cell
8. foot part
9. opening
10. head part
11. baffle plate
12. spring
13. hole
14. unfaithful intention cam
15. space
16. combustion chamber
17. mixing chamber
18. interface channel
19. check-valves
20. electric arc
21. free space
22. metallic plate
23. filter
24. outlet
25. valve
26. valve flap
27. magnet assembly
Claims (9)
1. compressed gas produces equipment, with combustion chamber (16), the combustion chamber is used with least one respectively via mixing chamber (17)
Connected in the storage container of oxidant and/or fuel, to produce compressed gas;Wherein,
The residue accumulated when burning can be gathered in the free space (21) of the combustion chamber (16), and
The filter (23) of maze type is distributed to the combustion chamber (16), the filter mainly includes metallic plate (22);
The combustion chamber (16) is in outlet side by with treating that pressure controlled the valve (25) opened closes;And
The combustion chamber (16) couples with the air admission hole (2) of drive motor.
2. compressed gas according to claim 1 produces equipment, it is characterised in that the oxidant is high energy oxidation conjunction
Thing, and the fuel is combustible cpd.
3. compressed gas according to claim 2 produces equipment, it is characterised in that the high energy oxygen compound is sodium chlorate
Or sodium perchlorate.
4. compressed gas according to claim 2 produces equipment, it is characterised in that the fuel is made up of organic material.
5. compressed gas according to claim 4 produces equipment, it is characterised in that the organic material is wood chip or charcoal
Powder.
6. the compressed gas according to one of claim 1 to 5 produces equipment, it is characterised in that in order to light by the oxygen
Agent and the mixture of the fuel composition set electric arc (20) in the combustion chamber (16) or are made up of hydrogen and oxygen
Auxiliary gas.
7. the compressed gas according to one of claim 1 to 5 produces equipment, it is characterised in that in mixing chamber (17) and extremely
At least one check-valves (19) is set between a few storage container, at least one described check-valves is inserted into mixing chamber (17)
In the interface channel (18) coupled with storage container.
8. compressed gas according to claim 1 produces equipment, it is characterised in that the valve (25) includes at least two
Spring loaded valve flap (26), the valve flap is kept in off position under magnet effect.
9. the compressed gas according to one of claim 1 to 5 produces equipment, it is characterised in that the compressed gas is produced and set
It is ready for use on and is coupled with the drive motor of vehicle or aircraft.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012109679.1 | 2012-10-11 | ||
DE102012109679.1A DE102012109679A1 (en) | 2012-10-11 | 2012-10-11 | Vane machine and pressurized gas generating device |
PCT/DE2013/100303 WO2014056485A1 (en) | 2012-10-11 | 2013-08-22 | Compressed gas generator |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104704292A CN104704292A (en) | 2015-06-10 |
CN104704292B true CN104704292B (en) | 2017-07-25 |
Family
ID=49123612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201380051217.9A Active CN104704292B (en) | 2012-10-11 | 2013-08-22 | Compressed gas produces equipment |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN104704292B (en) |
DE (2) | DE102012109679A1 (en) |
HK (1) | HK1208523A1 (en) |
WO (1) | WO2014056485A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE904653C (en) * | 1943-04-25 | 1954-04-29 | Vorkauf Heinrich | Process for regulating the liquid feed in circulating steam generators |
US3677010A (en) * | 1964-03-11 | 1972-07-18 | Us Army | Rocket motor and method |
US4115999A (en) * | 1975-03-13 | 1978-09-26 | The United States Of America As Represented By The Secretary Of The Navy | Use of high energy propellant in gas generators |
US5864517A (en) * | 1997-03-21 | 1999-01-26 | Adroit Systems, Inc. | Pulsed combustion acoustic wave generator |
US6422184B1 (en) * | 1999-02-26 | 2002-07-23 | Meta Motoren-Und Energie Technik Gmbh | Method and apparatus for impulse charging of an internal combustion engine |
CN1865669A (en) * | 2005-05-20 | 2006-11-22 | 中国科学院金属研究所 | Carbon black filtering and electric direct-heating type regeneration device for diesel truck |
DE102006021624A1 (en) * | 2006-05-09 | 2007-11-15 | Michael Artmann | Device for producing pressurized hot gas, comprises a pot like cyclone combustor arranged in a boiler having a cylindrical section, a lid section and a bottom section, a cyclone for cleaning the produced pressurized hot gas, and an agitator |
WO2009021729A9 (en) * | 2007-08-13 | 2009-07-30 | Harald Winkler | Heat engine |
WO2011021969A1 (en) * | 2009-08-21 | 2011-02-24 | Olcon Engineering Ab | Closed vessel arrangement for safe destruction of rocket motors |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1890038U (en) * | 1962-02-27 | 1964-03-26 | Auto Union Gmbh | SEALING ARRANGEMENT FOR PRESSURE ROOMS IN ROTARY LISTON MACHINES. |
DE2319257A1 (en) * | 1973-04-16 | 1974-10-31 | Joseph Rogl | ROTARY PISTON ENGINE |
US4624192A (en) * | 1986-03-20 | 1986-11-25 | Mansfield Carbon Products | Fluidized bed combuster process |
GB9811111D0 (en) * | 1998-05-23 | 1998-07-22 | Driver Technology Ltd | A rotary machine |
CN2503364Y (en) * | 2001-10-10 | 2002-07-31 | 沈福昌 | PTA residual incineration treatment device |
DE10219273A1 (en) * | 2002-04-30 | 2003-11-13 | Daimler Chrysler Ag | Device for charge changing control in an internal combustion engine with oscillating cylinders fed by inlet channels uses a control element with a flap to reduce an inlet channel cross section. |
DE10258341A1 (en) * | 2002-12-12 | 2004-06-24 | Ego S.R.O. | Rotary piston motor or pump has pivoted vanes with bias springs to press vane ends against stator chamber wall |
US7204472B2 (en) * | 2004-03-12 | 2007-04-17 | Gm Global Technology Operations, Inc. | Active pressure relief valves and methods of use |
-
2012
- 2012-10-11 DE DE102012109679.1A patent/DE102012109679A1/en not_active Withdrawn
-
2013
- 2013-08-22 WO PCT/DE2013/100303 patent/WO2014056485A1/en active Application Filing
- 2013-08-22 DE DE112013004974.0T patent/DE112013004974B4/en active Active
- 2013-08-22 CN CN201380051217.9A patent/CN104704292B/en active Active
-
2015
- 2015-09-16 HK HK15109043.1A patent/HK1208523A1/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE904653C (en) * | 1943-04-25 | 1954-04-29 | Vorkauf Heinrich | Process for regulating the liquid feed in circulating steam generators |
US3677010A (en) * | 1964-03-11 | 1972-07-18 | Us Army | Rocket motor and method |
US4115999A (en) * | 1975-03-13 | 1978-09-26 | The United States Of America As Represented By The Secretary Of The Navy | Use of high energy propellant in gas generators |
US5864517A (en) * | 1997-03-21 | 1999-01-26 | Adroit Systems, Inc. | Pulsed combustion acoustic wave generator |
US6422184B1 (en) * | 1999-02-26 | 2002-07-23 | Meta Motoren-Und Energie Technik Gmbh | Method and apparatus for impulse charging of an internal combustion engine |
CN1865669A (en) * | 2005-05-20 | 2006-11-22 | 中国科学院金属研究所 | Carbon black filtering and electric direct-heating type regeneration device for diesel truck |
DE102006021624A1 (en) * | 2006-05-09 | 2007-11-15 | Michael Artmann | Device for producing pressurized hot gas, comprises a pot like cyclone combustor arranged in a boiler having a cylindrical section, a lid section and a bottom section, a cyclone for cleaning the produced pressurized hot gas, and an agitator |
WO2009021729A9 (en) * | 2007-08-13 | 2009-07-30 | Harald Winkler | Heat engine |
WO2011021969A1 (en) * | 2009-08-21 | 2011-02-24 | Olcon Engineering Ab | Closed vessel arrangement for safe destruction of rocket motors |
CN102575846A (en) * | 2009-08-21 | 2012-07-11 | 区域清除服务瑞典有限公司 | Closed vessel arrangement for safe destruction of rocket motors |
Also Published As
Publication number | Publication date |
---|---|
DE112013004974B4 (en) | 2017-12-28 |
HK1208523A1 (en) | 2016-03-04 |
CN104704292A (en) | 2015-06-10 |
WO2014056485A1 (en) | 2014-04-17 |
DE112013004974A5 (en) | 2015-06-25 |
DE102012109679A1 (en) | 2014-04-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102383914B (en) | For drawing the method for the merit of rotary type motor | |
CN107061213A (en) | Pump unit and Handheld high-voltage cleaning machine | |
CN106574550A (en) | Single-supply-port activated connecting rod for variable compression ratio engines | |
CN106090065A (en) | Hydraulic torque converter and torque amplifier | |
CN202546204U (en) | Oil pump | |
CN104704292B (en) | Compressed gas produces equipment | |
CN103029713B (en) | side dumper and control system thereof | |
CN104937082A (en) | Systems and methods for utilizing alcohol fuels | |
CN102182587B (en) | Fuel economizing device for mixing and atomizing fuel, water and air | |
CN104755720A (en) | Valve assembly with cylinder having through holes | |
CN206569259U (en) | A kind of dual-use Helicopter Safety device | |
CN108758656A (en) | A kind of sludge incineration sludge oiling device | |
CN201517528U (en) | Swinging-type pneumatic motor | |
US887989A (en) | Process of producing gas. | |
CN202023660U (en) | Fuel economizer capable of realizing fuel oil, water and air mixing atomization | |
CN106732272A (en) | The reaction tube that volatilization prevention beyond the region of objective existence is let out | |
CN109958552B (en) | Fuel steam desorption system and vehicle | |
CN102027198A (en) | Underground mining vehicle | |
CN201225288Y (en) | Explosion-proof type oil and gas recovery vacuum pump | |
CN201265432Y (en) | Gas cylinder of pneumatic tool | |
CN101607175A (en) | Device for degrading volatile organic compounds of gas station | |
JP4042824B1 (en) | Power generation system | |
CN111365129A (en) | Limit wheel type engine system | |
CN205836517U (en) | A kind of vehicle liquid pneumatic control device | |
CN111911286A (en) | Underwater turbojet engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
EXSB | Decision made by sipo to initiate substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1208523 Country of ref document: HK |
|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1208523 Country of ref document: HK |