EP1418387B1 - Kompaktheizungsanlage mit zwei Heizkreisen - Google Patents
Kompaktheizungsanlage mit zwei Heizkreisen Download PDFInfo
- Publication number
- EP1418387B1 EP1418387B1 EP02024872.0A EP02024872A EP1418387B1 EP 1418387 B1 EP1418387 B1 EP 1418387B1 EP 02024872 A EP02024872 A EP 02024872A EP 1418387 B1 EP1418387 B1 EP 1418387B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- connection
- installation according
- heating installation
- valve housing
- heat exchanger
- 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 - Lifetime
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/14—Arrangements for connecting different sections, e.g. in water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/14—Arrangements for connecting different sections, e.g. in water heaters
- F24H9/142—Connecting hydraulic components
Definitions
- the invention relates to a compact heating system according to the features specified in the preamble of claim 1.
- Compact heating systems of this type are used for heating domestic hot water, ie for hot water on the one hand and for heating heating water on the other.
- the water is guided in a heating circuit, in which it is heated in a primary heat exchanger and circulated by a pump through the heating circuit for space heating.
- the heating circuit for space heating is switched off, if necessary by means of a switching valve and instead switched on a heating circuit for water heating, which has a secondary heat exchanger in which the hot water is heated.
- pump and changeover valve known, for example, in EP 0 825 387 B1 are shown by way of example and schematically.
- the EP 0 825 387 B1 shows as well as the EP 1 031 795 A the preamble of claim 1.
- the present invention relates to a type in which the pump and change-over valve are arranged on the warm side of the primary heat exchanger, ie viewed in the direction of flow between the primary heat exchanger and the secondary heat exchanger or between the primary heat exchanger and space heating are located.
- Such an arrangement is in EP 0 825 387 B1 by way of example Fig. 7 explained.
- the invention has for its object to provide a generic compact heating system, which is aerodynamically and manufacturing technology favorable and which allows a compact design.
- the basic idea of the present invention is to connect the discharge nozzle of the pump directly to the adjacently arranged valve housing in order thereby to create, on the one hand, a streamlined transition between the pump and the valve housing and, on the other hand, a compact structural unit. Because no piping between these components takes place, results in a compact and stable assembly, in particular, when the pump housing and the valve housing are integrally formed.
- the use of a directional control valve in the immediate vicinity of the pump is advantageous, since stable and largely flow-independent switching operations can be ensured over a long period of time.
- the directional control valve is in particular also insensitive to contamination or deposits.
- the valve housing is formed so that it has a rear connection pair, which can be connected directly to the secondary heat exchanger, which is usually designed in the form of a plate heat exchanger.
- the plate heat exchanger is usually made of metal and the unit is made of plastic as an injection molded part, the direct connection of the unit to the plate heat exchanger in addition to the advantage of the omitted piping additionally gives the advantage of high stability and a compact design.
- connection unit is provided in an advantageous development of the invention for the other connection pair of the plate heat exchanger, wherein the arrangement is such that the pump housing between the terminal pairs of the plate heat exchanger immediately before this (seen in installation position) is arranged, in this way, a compact design reached.
- the connection unit can be designed either as a separate component or preferably integrally with the assembly, so that all four connections of the plate heat exchanger are directly connected to the unit. In addition to the compact construction, this results in particular in a stability advantage, since the plate heat exchanger then forms a stabilizing base for the assembly.
- connection stub is understood to mean an opening which can be connected in a suitable manner to a pipe or other component. It does not necessarily have to be a threaded connector, but can also be any other connection component of such a connection.
- the side-by-side, down-to-back position makes it easy to connect external lines and make them easy to access.
- a connecting piece is designed so that it has a backwards or downwards offset by 90 ° and closable further nozzle.
- this connecting piece has the advantage that a core can be pulled over this further connecting piece and, in addition, offers a further connection possibility, be it for a sensor, a valve, a filter or the like.
- the additional nozzle is preferably offset by 180 ° to the connecting piece, so that the filter can be inserted from the front, when the connecting piece is directed to the rear. In this way, the replacement of the filter in installation position is easily possible, since accessibility is given from the front.
- the assembly is connected with its series of connections directly to the in-house piping, since then no further piping is required to allow here the usual screw and prevent the assembly is damaged when connecting the pipes is provided according to the invention .
- These existing metal connecting pieces then have, for example, a conventional external thread, so that they can be screwed on site with the stationary piping system.
- the assembly on inserts for temperature, pressure and / or flow sensors, which are arranged so that they are accessible in the installed position, so that they can be replaced quickly and easily in the event of a defect.
- Such an insert is preferably provided in the heating water return, in the hot water inlet and on the suction side of the pump housing.
- a closable discharge opening is provided on the suction side at the bottom of the pump housing according to a development of the invention. This discharge opening is freely accessible from below, so that a collecting vessel can be placed underneath, in which the water flowing out of the system via the outlet opening is collected.
- the valve housing according to the invention has a substantially cylindrical shape and is closed at one end by a closure.
- This closure preferably has a bayonet, so that even in later operation, the valve itself is easily and quickly accessible.
- valve housing two sealing seats are provided according to the invention, close the associated sealing body against flow direction and are arranged on a common actuator.
- This design has the advantage that for each of the heating circuits practically a separate valve is provided, wherein the synchronous Closing and opening is ensured by the common actuator, As a result of the fact that both sealing bodies close against the flow direction, the valve operates virtually independently of flow. There are avoided when flowing closing in the direction of flow sealing bodies due to the flow, which cause a disturbing noise on the other hand can damage the heating system in the long term.
- the sealing seats are formed by a valve unit which can be inserted into the valve housing and which comprises both sealing seats and the actuator with the sealing bodies.
- the housing construction is significantly simplified, which brings manufacturing advantages in terms of the tool and on the other hand, the entire valve unit can be quickly and easily replaced in case of repair, without having to rework, for example, a seated within the housing sealing seat or with the actuator To replace the sealing bodies.
- an electric motor driven adjusting device which is laterally connected to the valve housing and having an actuating arm which engages in the valve housing and the actuator positively includes so that the position of the sealing body with respect to to control the sealing seats.
- the actuating arm is preferably surrounded by an elastic sealing jacket, which seals the actuating device against the liquid in the valve housing.
- the actuator would have to be sealed relative to the housing having the drive and the housing relative to the valve housing.
- the suction nozzle of the pump is to be connected to the usually far above primary heat exchanger, it is expedient, this suction leading out of the pump housing and connect there with a leading to the primary heat exchanger tube.
- the suction nozzle can also be led out laterally from the pump housing, but in any case transversely to the impeller axis, so that its accessibility is ensured even when installed.
- the assembly according to the invention can, even with one-piece design, as will be explained below in detail with reference to an embodiment, manufacturing technology low, namely almost exclusively be made with drawing cores, Preferably, however, in the region of the pressure-side connection between the pump housing and the valve housing, a melting core provided since then this area can be optimized according to exclusively fluidic aspects, which leads to increases in efficiency and in particular also reduces noise emissions in this area.
- the channel guide for the domestic water supply is performed within the unit.
- the guide is expediently such that this channel at least partially surrounds the valve housing, so as to lead this connection to an easily accessible point of the assembly.
- the assembly on guide means which make it possible to insert them in their installed position from the front, so the assembly can first be spent in a first fixing position in which the connection connections are largely made, after which then the unit via this guide means is moved to its final installation position.
- the compact heating system is a Gasterme, in which in a primary heat exchanger water is heated by a gas burner, which passes from the primary heat exchanger in a pump 1, from there to a valve 2, where depending on the valve position either for the Space heating, usually consisting of radiators heating circuit or a secondary heat exchanger 3 is supplied to a heating circuit, which heated line or hot water by means of the secondary heat exchanger 3. Both heating circuits are recirculated downstream in the supply line to the primary heat exchanger.
- a gasterme in which in a primary heat exchanger water is heated by a gas burner, which passes from the primary heat exchanger in a pump 1, from there to a valve 2, where depending on the valve position either for the Space heating, usually consisting of radiators heating circuit or a secondary heat exchanger 3 is supplied to a heating circuit, which heated line or hot water by means of the secondary heat exchanger 3. Both heating circuits are recirculated downstream in the supply line to the primary heat exchanger.
- the present invention is not the above-described structure as such, but rather the specific embodiment of the existing centrifugal pump 1 and valve 2 assembly, as described below.
- the pump 1 is an electric motor-driven centrifugal pump, whose (not shown) impeller rotates in a pump housing 4, the pressure port 5 opens into an immediately adjacent substantially cylindrical valve housing 6.
- the discharge nozzle 5 opens approximately halfway along the substantially cylindrical valve housing 6, in which a 2/3 way valve is integrated.
- the valve housing 6 has near its bottom a connection piece 7, which in the installed position to the side, in particular to the left is directed, and which is provided for connection of the heating circuit for the space heating and an upper connecting piece 8 which serves for connection of the second heating circuit, in particular the secondary heat exchanger 3 on the supply side.
- the valve housing 6 is topffömig in this embodiment, d.
- h "it has a closed bottom and is sealed at its top by a closure 9.
- the closure 9 is integrated by means of a bayonet connection from above into the valve housing 6 so that it removes, for example, in case of a required repair of the valve with a handle
- the valve housing can also be equipped on the bottom side with such a closure 9, as is shown by way of example in FIG Fig. 3 is shown. Then the valve is accessible from both sides.
- Fig. 2 Core of in Fig. 1 shown unit is in Fig. 2 individually shown injection molding component 10, which includes the pump housing 4 and the valve housing 6 including the connecting pressure port 5.
- this plastic injection molded part 10 pump housing side on a suction nozzle 11, which in this embodiment perpendicular down, beyond an air separator 12 which is formed at the top for receiving a vent valve 13, a sensor receptacle 14 and the pressure side a discharge nozzle 15.
- the sensor receptacle 14 is provided for receiving a sensor unit 16, which may have, for example, a pressure sensor and / or a temperature sensor for suction-side detection.
- the discharge nozzle 15 is usually provided with a sealing cap, which is also mounted in a bayonet. About this port 15, the pump can be drained in installation position, for example, for repair purposes, when the engine and centrifugal existing unit to be replaced.
- the valve housing 6 has in addition to those already described Connecting piece 7 and 8 and the upper closable by means of the shutter 9 opening still a side port 17 for incorporating an actuator 18 for the valve 2, the example with reference to Figures 3 and 4 is shown.
- the injection molded part 10 can be prepared except for the area of the pressure port 12 exclusively with drawing cores, only in the area of the pressure nozzle is a melt core required on the tool side, which is advantageous in terms of flow, since this pressure and connection pipe 5 can be optimized exclusively according to flow aspects.
- the basic structure of the valve 2 is the Figures 3 and 4 refer to.
- the valve 2 has in the flow direction the pressure port 5 on the input side and the nozzle 7, 8 on the output side.
- Each output-side terminal 7 and 8 is associated with a sealing seat 19 and a sealing body 20, in such a way that both sealing bodies 20 close against the flow direction.
- the sealing body 20 sit on a common rod-like actuator 21 so that they are always moved together.
- the discharge nozzle 5 is conductively connected to the one connecting piece 7 or the other connecting piece 8.
- Fig. 3 an intermediate position is shown, which arises during the switching.
- the actuator 21 is controlled by means of a lever arm 22 which engages around the actuator 21 in the middle between the sealing bodies 20 from the side in a form-fitting manner. Upwards and downwards, the actuator 21 has two fixedly connected to this disc 23, to which the lever arm 22 is supported in its the switching operation triggering movement.
- the lever arm 22 is covered with a rubber sleeve, which extends beyond the head 24 of the actuator and thus both the actuator and the lever arm relative to the valve interior seals.
- the head 24 is seated within the terminal 17 of the component 10. Within the head 24 of the lever arm 22 is pivotally mounted, the other end has a spindle nut which sits on a spindle which is driven by an electric motor in the form of a stepping motor 25.
- the sealing seats 19 valve housing side are arranged.
- the sealing body 20 are positively lockingly placed on the actuator 20, so that the sealing body can be replaced after removing the shutters 9, and the sealing seats 19 can optionally be cleaned or reworked.
- a closure 9 is provided as well as on the top.
- FIG. 4 shows an embodiment of the invention, in which the entire valve is designed in the form of a cartridge 26 which can be inserted into the valve housing.
- the essential difference is that the valve seats 19 are no longer provided on the housing side, but form part of the cartridge, the cartridge 26 itself is inserted by means of two O-rings 27 sealingly into the then cylindrical inside valve housing ,
- the O-rings 27 each sit in the area between the discharge nozzle 5 and connecting piece 8 or discharge nozzle 5 and connecting piece 7, actuator 21, actuator 18 and the arrangement of sealing bodies 20 and sealing seats 19 is otherwise the same design as in the above-described embodiment Fig.
- the cartridge 26 may be pulled upwards out of the valve housing and replaced by an exchange cartridge in this embodiment, optionally after disassembly of the actuator 18 and the shutter 9. Regardless of the cartridge side, the sealing body 20 as described above by the actuator 21st be removed to make the sealing seats 19 accessible or the sealing body 20 to renew.
- Fig. 5 shows a variant in which the unit formed from pump 1 and valve 2 includes all that, which is based on the embodiment according to FIGS. 1 and 2 has been described, as well as a rear terminal pair 28 for direct connection to a (in Fig. 5
- suction nozzle not down, but led out upwards, ie in the immediate direction to the primary heat exchanger, with which he is to connect.
- connection pair 28 which is provided for the direct connection of the plate heat exchanger 3, has a connection to the top 8 corresponding port for supplying the coming from the primary heat exchanger hot water to the plate heat exchanger 3, whereas the lower connection of the connection pair 28 is used to supply the still cold service water.
- the channel 29 opens into a rear-facing connection piece 31, to which the cold water supply to the system is to be connected. Accessible from the front, in Fig. 5 not visible, in this channel 29 is still a sensor recording integrated.
- a connecting piece 32a which is directed downward in the installed position, is offset by 90 ° to the rear, a further connecting piece 32 assigned.
- the connection 32 is used for connection to the space heating, whereas the connection 32a serves to connect an overflow device 43 and / or a filling device 51 if required.
- connection pair for the secondary heat exchanger 3 may be formed by a separate injection molding component. This is particularly advantageous if heat exchangers of different lengths are to be used in the same gas boiler construction.
- FIGS. 6 to 10 illustrated arrangement comprising a unit that includes both pairs of terminals.
- the plastic injection-molded component 33 of this structural unit comprises both the connection pair 28 and the corresponding connection pair 34, so that this component is firmly connected to the secondary heat exchanger 3 at two regions arranged on both sides of the pump housing 4.
- the secondary heat exchanger 3 thus supports the plastic injection molded part 33 towards the rear and stabilizes it.
- the connections of the terminal pair 28 are based on Fig. 5 already described, they are functionally consistent with this embodiment.
- the connections of the connection pair 34 supplement this, wherein the upper connection, the emerging from the secondary heat exchanger 3 heating water and the lower port of the emerging from the secondary heat exchanger 3 heated hot water, ie the prepared hot water leads.
- the pump housing 4 and the valve housing 6 are connected to one another via the pressure connection 5, whereby stabilizing ribs 35 are additionally provided below the pressure connection.
- a channel 29 is provided which opens into a connecting piece 36 and which has a sensor receptacle 37 accessible from the front.
- connection pair 34 is connected via an obliquely forwards and to the side current channel 38 with a mounting position substantially perpendicular channel portion 39, which leads to a rearwardly directed connection piece 40.
- the channel portion 39 has both at its upper and at its lower end a terminal, wherein the lower terminal 41 offset by 90 ° to the rear terminal 40 and 90 ° offset to a front terminal 42.
- these openings serve to pull the cores after the injection molding process and, on the other hand, form receptacles for sensors, for example the forwardly directed valve receptacle 44 in the channel section 39.
- the upper end of Kanalabschnits 39 is formed as a connecting piece 45 and serves to connect the return line to the primary heat exchanger.
- connection pair 34 is connected via a channel 46, which is directed substantially parallel to the impeller axis to the front and opens into a substantially vertically extending channel section 47.
- This channel portion 47 is formed at its lower end in the same way, wherein the rear connection piece 48 is provided for connection of the building-side hot water pipe.
- the connecting pieces 36 and 32 and 40 and 48 are formed of metal and incorporated into the injection-molded component 33 during injection molding and firmly. They have an external thread, so that they can be connected by means of a union nut directly to the building-side connecting cables.
- the aforementioned connections are all in a row lying transverse to the wheel axle 49 and are directed all the way to the rear. In this way, the whole in the FIGS. 6 to 8 shown block after releasing these four connections are pulled out of the device forward.
- guide rails 50 are provided which facilitate this. These integrally formed with the component 33 guide rails cooperate with corresponding guide grooves, which are provided in the on-site firmly mounted part of the gas boiler. As the FIGS.
- the water filling device comprises a line connection between the building-side cold water connection and the heating circuit, which is controllable via a switching device.
- the overflow device 43 is provided between the flow and the return of the heating circuit for the space heating and serves to ensure that even with the heating circuit closed for space heating, the flow circuit as such remains fluidly. Since both the overflow device 43 and the water filling device 51 are only provided as required, the component 33 is designed such that it can be delivered optionally with or without.
- the injection molded part 33 is like the Figures 9 and 10 clarify tooling comparatively cheap manufacture, since only two melt cores are required, namely, as in the other embodiments, a melted core for the discharge nozzle 5 and the spiral pressure-side pump housing part and another melting core for the guided around the filter housing 6 channel 29.
- this manufacturing technology is comparatively simple, namely to produce essentially by means of drawing cores, only two melt cores are required.
- the structure is also extremely compact, and is supported statically by the secondary heat exchanger connected on the back.
- the forward lower ports (for example, 42) can be used to incorporate filters.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02024872.0A EP1418387B1 (de) | 2002-11-08 | 2002-11-08 | Kompaktheizungsanlage mit zwei Heizkreisen |
CN 200310101324 CN100526748C (zh) | 2002-11-08 | 2003-10-15 | 紧凑型加热设备 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02024872.0A EP1418387B1 (de) | 2002-11-08 | 2002-11-08 | Kompaktheizungsanlage mit zwei Heizkreisen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1418387A1 EP1418387A1 (de) | 2004-05-12 |
EP1418387B1 true EP1418387B1 (de) | 2016-01-13 |
Family
ID=32103907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02024872.0A Expired - Lifetime EP1418387B1 (de) | 2002-11-08 | 2002-11-08 | Kompaktheizungsanlage mit zwei Heizkreisen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1418387B1 (zh) |
CN (1) | CN100526748C (zh) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1909041A1 (de) * | 2003-11-03 | 2008-04-09 | Grundfos a/s | Baueinheit für eine Kompaktheizungsanlage |
ITMI20041982A1 (it) * | 2004-10-19 | 2005-01-19 | G V Stamperie S P A | "gruppo caldaia per caldaie a gas a doppia funzione e caldaia con tale gruppo" |
ITMI20060751A1 (it) * | 2006-04-14 | 2007-10-15 | Fugas S P A | Gruppo idraulico di ritorno per caldaie murali |
ITBO20080456A1 (it) * | 2008-07-21 | 2010-01-22 | O T M A S N C Di Spaggiari & C | Gruppo idraulico valvolare per caldaie murali |
EP2397777B1 (de) * | 2010-06-19 | 2016-08-03 | Grundfos Management A/S | Gehäuseeinheit für eine Heizungsanlage |
EP2413045B1 (de) * | 2010-07-30 | 2014-02-26 | Grundfos Management A/S | Wärmetauschereinheit |
CN102226588B (zh) * | 2011-04-22 | 2014-08-13 | 格伦德福斯管理联合股份公司 | 太阳能工作站 |
CN102226589B (zh) * | 2011-04-22 | 2013-04-17 | 格伦德福斯管理联合股份公司 | 太阳能工作站 |
EP2613097B2 (de) † | 2012-01-09 | 2020-11-18 | Grundfos Holding A/S | Heizgerät |
EP2629019B1 (de) * | 2012-02-17 | 2016-04-13 | Grundfos Holding A/S | Gehäuseeinheit für ein Heizgerät |
PL2708825T3 (pl) * | 2012-09-12 | 2017-08-31 | Grundfos Holding A/S | Sposób sterowania pompą obiegową w instalacji z co najmniej dwoma obwodami cyrkulacyjnymi |
EP3012552B1 (de) * | 2014-10-21 | 2018-01-31 | Grundfos Holding A/S | Baueinheit für eine Kompaktheizungsanlage |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59102700D1 (de) | 1990-05-04 | 1994-10-06 | Grundfos Int | Kreiselpumpe und damit ausgestattete Gastherme. |
KR100200281B1 (ko) * | 1995-03-31 | 1999-06-15 | 전주범 | 가스보일러의 물탱크 |
IT1284431B1 (it) * | 1996-03-22 | 1998-05-21 | Fugas Srl | Gruppo idraulico con pompa integrata per impianti misti di riscaldamento e acqua sanitaria |
DE19632605A1 (de) * | 1996-08-13 | 1998-02-19 | Wilo Gmbh | Hydraulikbaugruppe für eine kombinierte Heizwasser- und Sanitärwasseranlage |
IT1308197B1 (it) * | 1999-02-24 | 2001-12-10 | Fontecal S P A | Gruppo idraulico componibile. |
DE50012245D1 (de) * | 1999-06-25 | 2006-04-27 | Vaillant Gmbh | Anordnung zur Halterung eines Gehäuses, das eine Meß-, Regel- oder Steuerschaltung enthält, an dem Gehäuse eines Wasserheizers |
DE10007873C1 (de) * | 2000-02-21 | 2001-06-28 | Grundfos As | Baueinheit für eine Kompaktheizungsanlage |
-
2002
- 2002-11-08 EP EP02024872.0A patent/EP1418387B1/de not_active Expired - Lifetime
-
2003
- 2003-10-15 CN CN 200310101324 patent/CN100526748C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1418387A1 (de) | 2004-05-12 |
CN100526748C (zh) | 2009-08-12 |
CN1499138A (zh) | 2004-05-26 |
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