EP2336668A2 - Water heater with thermally insulated holder - Google Patents
Water heater with thermally insulated holder Download PDFInfo
- Publication number
- EP2336668A2 EP2336668A2 EP20100193959 EP10193959A EP2336668A2 EP 2336668 A2 EP2336668 A2 EP 2336668A2 EP 20100193959 EP20100193959 EP 20100193959 EP 10193959 A EP10193959 A EP 10193959A EP 2336668 A2 EP2336668 A2 EP 2336668A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat insulating
- water heater
- storage vessel
- holder
- inner storage
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- F24H9/06—Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
- F24H1/202—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply with resistances
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
Definitions
- the present invention relates to a water heater.
- Conventional water heaters usually consist of an inner storage vessel, a mounted outside of the inner storage vessel housing and located between the inner storage vessel and the housing isolier für.
- the water heater is usually attached to a wall in the bathroom and has on the outside of the housing an outer holder which can be connected to a wall-mounted support member.
- an inner holder Within the heat insulating layer is an inner holder, which is usually welded to the outer surface of the inner storage vessel.
- Chinese utility model ZL 01235705.7 a water heater is described, which, as is common practice, an inner storage vessel having a cylindrical, horizontally arranged drum, wherein in the upper and lower half of the drum in each case a plurality of inner holders are distributed.
- each inner holder On the inside of each inner holder, a nut is soldered, which is connectable with a screw by being guided from the outside in succession through the respective outer holder, the housing and the inner holder. In this way, the inner storage vessel and the housing are securely connected to each other.
- the inner and outer holders as well as the screw and nut are made of metal, heat is transferred from the inner storage vessel via the holder assembly to the outside, resulting in heat loss.
- the heat loss caused by the heat conduction of the holder assembly makes up one-third of the total heat loss of a water heater and hinders economic use of the energy.
- This insulating part consists of an upper part and a lower part, which are respectively between the housing and the inner holder or between inner holder and inner storage vessel.
- a serving for fastening nut engages the lower part, on which an opening for the passage of a screw is formed. Since such an insulating part is usually made of plastic, it may cause damage to the insulating part, when the nut when tightening the screw upwards presses on the opening in the lower part of the insulating part, and further the heat insulation are impaired.
- the object of the present invention is to provide a water heater with an improved heat insulating assembly in which damage to the heat insulating assembly is excluded and a reliable thermal insulation between the inner storage vessel and holder is ensured to reduce the energy loss.
- the first heat-insulating part between the housing and inner holder and the second heat-insulating part between inner storage vessel and inner holder can be further improved.
- the second heat insulating part comprises a base plate and a recess for receiving the nut, wherein the recess is formed on the base plate. Consequently, a compact construction of the heat insulating device can be provided. Furthermore, thus the mother can be securely held on the base plate.
- the heat-insulating assembly additionally comprises a cover plate arranged between the second heat-insulating part and the inner holder for closing the opening.
- the base plate has a plurality of latching hooks formed on its upper side and the cover plate has a plurality of tongues which are matched to the latching hooks or cooperate with one another.
- the heat-insulating assembly also comprises a spacer arranged between nut and cover plate.
- the spacer can further absorb the compressive force of the nut more effectively.
- the first heat-insulating part has two latching parts extending downwards over the opposite transverse ends of the inner holder and the second heat-insulating part has two grooves tuned to the latching parts.
- the second heat insulating part has a plurality of pins which engage at the two opposite transverse ends of the inner holder to prevent movement of the second heat insulating relative to the inner holder.
- the first or second heat insulating part or the cover plate made of plastic.
- the material is lightweight and inexpensive to manufacture.
- the water heater additionally comprises an outer, formed on the housing holder for suspending the water heater to a wall.
- the water heater 100 includes an inner storage vessel 1 for storing heated Water, a housing 3 enclosing the inner storage vessel 1 and a heat insulating layer 4 filled with a foam (eg of polyurethanes) located between the inner storage vessel 1 and the housing 3.
- the inner storage vessel 1 has a substantially cylindrical shape with a cylindrical wall and is usually made of ferrous metal such as steel or iron.
- the water heater 100 is mounted horizontally, that is, the elongated wall of the inner storage vessel extends in the horizontal direction.
- an inlet opening 11 for introducing cold water into the inner storage vessel and an outlet opening 12 for discharging hot water are formed in the wall of the inner storage vessel 1.
- the water heater 100 includes a heat source for heating cold water, which may be different.
- electric Wassererfflers may be present at one longitudinal end of the inner storage vessel 1, a flange (not labeled) on which an electric heating tube 2 is mounted, which projects into the water stored in the inner storage vessel.
- This heating tube may include a high impedance resistance wire with the plus and minus terminals of the resistance wire on the flange and connected to a 220V or 110V AC power supply.
- the liquid in the inner storage vessel for example, be heated by a combustion chamber arranged outside of this storage chamber in the case of a gas water heater.
- the water heater 100 further includes a holder assembly which, together with a wall-mounted support member, serves to suspend the water heater to the wall.
- the water heater includes two horizontally disposed holder assemblies. Since these are the same structure, only one of them will be explained in more detail below.
- a retainer assembly includes an outer housing 51 for suspending the water heater on a wall and an inner retainer 52 mounted on the wall of the inner storage vessel.
- the inner and outer retainers 52, 51 are made of metal.
- the inner holder 52 can either be fixed in a manner known per se, for example by welding, to the upper wall of the inner storage vessel or by screwing to a transition sheet soldered to the wall.
- the inner holder 52 is formed as a bent sheet metal part, for example made of sheet steel, which at its ends to the surface of the inner storage vessel is welded and forms in the middle of a rectangular elevation with a certain distance from the surface of the inner storage vessel.
- a heat insulating assembly according to the inner holder 3 and 4 intended.
- This includes a first heat insulating member 61 and a second heat insulating member 62 located on opposite sides 521 (indicated only once) of the inner holder 52.
- the first heat insulating member 61 is disposed between the housing 3 and the inner holder 52, while the second heat insulating member 62 is located in a space of the inner holder 52 and the inner storage vessel 1.
- the two ends of the first heat insulating part 61 are bent at right angles over the two opposite transverse ends 522 (indicated only once) of the inner holder 52 and extend downwardly to a respective hook-shaped latching part 611.
- the second heat insulating part 62 comprises a base plate 621 and one on the base plate 621 opened, hexagonal nut-shaped recess 622 for receiving a nut 72.
- On the base plate moreover, two semicircular strips are arranged around the recess 622, wherein in each case a latching hook 623 is attached next to the ends of each bar.
- a cover plate 63 is provided which fits into the space enclosed by the strips.
- this cover plate two opposite, radially extending tongues 631 are integrally formed, which secure together with the latching hooks 623 the respective position.
- a spacer 64 Between cover plate 63 and nut 72 is also a spacer 64, see also Fig. 2 ,
- the base plate 621 in the vicinity of their ends in each case a groove 624, which cooperate with the locking parts 611 of the first heat insulating 61, to ensure a secure vote of first and second heat insulating each other.
- the two heat insulating parts can be connected to other familiar to those skilled way together, but this is not discussed here.
- the base plate 621 has four pin 625 distributed in the corner area, which engage after mounting on the transverse ends 522 of the inner holder to prevent movement of the second heat insulating 62 relative to the inner holder 52.
- the first and second heat insulating members 61, 62 For mounting, the first and second heat insulating members 61, 62, as well as in Fig. 2 shown, locked on both sides of the inner holder together and then becomes a Screw successively passed through the outer holder 51, the housing 3, the first heat insulating member 61, the inner holder 52, the cover plate 63 and the spacer 64 to be finally rotated in the nut 72 in the second heat insulating 62nd
- the nut 72 presses against the inner holder 52 on the spacer 64 and the cover plate 63.
- the second heat insulating 62 undergoes no pressure force from the mother and is therefore protected from possible damage.
- first and second heat insulating member 61, 62 or the cover plate 63 made of heat insulating material such as plastic, heat transfer between the inner storage vessel and housing or between the inner and outer holder can be effectively prevented. In other words, the heat of the stored hot water in the inner storage vessel can not be transferred by conduction to the outer holder or the housing, whereby the heat loss is reliably reduced and the energy use is optimized.
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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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Details Of Fluid Heaters (AREA)
- Cookers (AREA)
- Thermal Insulation (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Wassererwärmer.The present invention relates to a water heater.
Herkömmliche Wassererwärmer bestehen in der Regel aus einem inneren Speichergefäß, einem außerhalb des inneren Speichergefäßes angebrachten Gehäuse und einer zwischen innerem Speichergefäß und Gehäuse befindlichen Wärmeisolierschicht. Der Wassererwärmer ist üblicherweise an einer Wand im Badezimmer befestigt und weist an der Außenseite des Gehäuses einen äußeren Halter auf, der sich mit einem an der Wand angebrachten Stützteil verbinden lässt. Innerhalb der Wärmeisolierschicht befindet sich ein innerer Halter, welcher meistens auf der Außenfläche des inneren Speichergefäßes angeschweißt ist. Im chinesischen Gebrauchsmuster
So sieht z.B. das chinesische Gebrauchsmuster
Die Aufgabe der vorliegenden Erfindung besteht darin, einen Wassererwärmer mit einer verbesserten Wärmeisolierbaugruppe zu schaffen, bei dem eine Beschädigung der Wärmeisolierbaugruppe ausgeschlossen ist und eine zuverlässige Wärmedämmung zwischen innerem Speichergefäß und Halter gewährleistet wird, um den Energieverlust zu reduzieren.The object of the present invention is to provide a water heater with an improved heat insulating assembly in which damage to the heat insulating assembly is excluded and a reliable thermal insulation between the inner storage vessel and holder is ensured to reduce the energy loss.
Erfindungsgemäß wird die Aufgabe gelöst durch einen Wassererwärmer mit den Merkmalen des Patentanspruchs 1, mit
- einem inneren Speichergefäß zur Aufnahme einer vorgegebenen Menge von erwärmbarem Wasser,
- einer Einlassöffnung und einer Auslassöffnung, welche mit dem inneren Speichergefäß verbunden sind und dem Durchlass von ins innere Speichergefäß eintretendem bzw. aus dem inneren Speichergefäß austretendem Wasser dienen,
- einer Wärmequelle zum Erwärmen des im inneren Speichergefäß befindlichen Wassers,
- einem Gehäuse, das das innere Speichergefäß von außen umschließt,
- einem inneren Halter, der am inneren Speichergefäß angebracht ist und sich zwischen innerem Speichergefäß und Gehäuse befindet,
- einer Wärmeisolierbaugruppe aus einem ersten und einem zweiten Wärmeisolierteil, welche sich an entgegengesetzten bzw. bezüglich des Halters auf gegenüberliegenden Seiten des inneren Halters befinden und miteinander verbindbar sind,
- einer Mutter, die lösbar im zweiten Wärmeisolierteil angeordnet ist,
- einer Schraube, die durch das Gehäuse und den inneren Halter geführt ist und mit der Mutter zusammenwirkt bzw. in einer Wirkverbindung zueinander stehen.
- an inner storage vessel for receiving a predetermined amount of heatable water,
- an inlet port and an outlet port, which are connected to the inner storage vessel and serve the passage of water entering into the inner storage vessel or emerging from the inner storage vessel,
- a heat source for heating the water in the inner storage vessel,
- a housing that encloses the inner storage vessel from the outside,
- an inner holder, which is attached to the inner storage vessel and is located between inner storage vessel and housing,
- a heat insulating assembly of a first and a second heat insulating member, which are at opposite or with respect to the holder on opposite sides of the inner holder and are connectable to each other,
- a nut which is detachably arranged in the second heat insulating part,
- a screw which is guided through the housing and the inner holder and cooperates with the nut or are in operative connection with one another.
Demgemäß kann eine Wärmeübertragung zwischen innerem Speichergefäß und Gehäuse bzw. zwischen innerem und äußerem Halter wirksam unterbunden werden und folglich kann die Wärme des im inneren Speichergefäß gespeicherten Warmwassers nicht durch Wärmeleitung auf den äußeren Halter bzw. das Gehäuse übertragen werden, womit der Wärmeverlust zuverlässig reduziert und die Energienutzung optimiert wird.Accordingly, heat transfer between the inner storage vessel and the housing or between the inner and outer holder can be effectively prevented, and thus the heat stored in the inner storage vessel hot water can not be transferred by conduction to the outer holder or the housing, whereby the heat loss reliably reduced and the energy use is optimized.
In einer weiteren Weiterbildung der vorliegenden Erfindung befindet sich das erste Wärmeisolierteil zwischen Gehäuse und innerem Halter und das zweite Wärmeisolierteil zwischen innerem Speichergefäß und innerem Halter. Somit kann die Wärmeisolation weiter verbessert werden.In a further development of the present invention, the first heat-insulating part between the housing and inner holder and the second heat-insulating part between inner storage vessel and inner holder. Thus, the heat insulation can be further improved.
In einer weiteren Weiterbildung der vorliegenden Erfindung umfasst das zweite Wärmeisolierteil eine Grundplatte und eine Aussparung zur Aufnahme der Mutter, wobei die Aussparung an der Grundplatte ausgebildet ist. Folglich kann eine kompakte Bauweise der wärmeisolierenden Vorrichtung bereitgestellt werden. Ferner kann somit die Mutter sicher an der Grundplatte gehaltert werden.In a further development of the present invention, the second heat insulating part comprises a base plate and a recess for receiving the nut, wherein the recess is formed on the base plate. Consequently, a compact construction of the heat insulating device can be provided. Furthermore, thus the mother can be securely held on the base plate.
In einer weiteren Weiterbildung der vorliegenden Erfindung umfasst die Wärmeisolierbaugruppe zusätzlich eine zwischen zweitem Wärmeisolierteil und innerem Halter angeordnete Deckplatte zum Verschluss der Öffnung. Dadurch kann die Druckkraft der Mutter das zweite Wärmeisolierteil nicht mehr beschädigen.In a further development of the present invention, the heat-insulating assembly additionally comprises a cover plate arranged between the second heat-insulating part and the inner holder for closing the opening. As a result, the compressive force of the mother can no longer damage the second heat insulating part.
In einer weiteren Weiterbildung der vorliegenden Erfindung weist die Grundplatte mehrere an ihrer Oberseite angeformte Rasthaken auf und die Deckplatte mehrere Zungen, die auf die Rasthaken abgestimmt sind bzw. miteinander zusammenwirken. Somit kann eine sichere Fixierung erreicht werden.In a further development of the present invention, the base plate has a plurality of latching hooks formed on its upper side and the cover plate has a plurality of tongues which are matched to the latching hooks or cooperate with one another. Thus, a secure fixation can be achieved.
In einer weiteren Weiterbildung der vorliegenden Erfindung umfasst die Wärmeisolierbaugruppe zudem ein zwischen Mutter und Deckplatte angeordnetes Distanzstück. Durch das Distanzstück kann weiter die Druckkraft der Mutter effektiver absorbiert werden.In a further development of the present invention, the heat-insulating assembly also comprises a spacer arranged between nut and cover plate. The spacer can further absorb the compressive force of the nut more effectively.
In einer weiteren Weiterbildung der vorliegenden Erfindung weist das erste Wärmeisolierteil zwei sich über die gegenüberliegenden Querenden des inneren Halters nach unten erstreckende Rastteile auf und das zweite Wärmeisolierteil zwei auf die Rastteile abgestimmte Nuten. Somit kann eine sichere Montage der Bauteile gewährleistet werden.In a further development of the present invention, the first heat-insulating part has two latching parts extending downwards over the opposite transverse ends of the inner holder and the second heat-insulating part has two grooves tuned to the latching parts. Thus, a secure installation of the components can be ensured.
In einer weiteren Weiterbildung der vorliegenden Erfindung verfügt das zweite Wärmeisolierteil über mehrere Zapfen, die an den beiden gegenüberliegenden Querenden des inneren Halters angreifen, um eine Bewegung des zweiten Wärmeisolierteils relativ zum inneren Halter zu unterbinden.In a further development of the present invention, the second heat insulating part has a plurality of pins which engage at the two opposite transverse ends of the inner holder to prevent movement of the second heat insulating relative to the inner holder.
In einer weiteren Weiterbildung der vorliegenden Erfindung besteht das erste oder zweite Wärmeisolierteil oder die Deckplatte aus Kunststoff. Das Material ist leicht und kostengünstig in der Herstellung.In a further development of the present invention, the first or second heat insulating part or the cover plate made of plastic. The material is lightweight and inexpensive to manufacture.
In einer weiteren Weiterbildung der vorliegenden Erfindung umfasst der Wassererwärmer zusätzlich einen äußeren, am Gehäuse ausgebildeten Halter zum Aufhängen des Wassererwärmers an einer Wand.In a further development of the present invention, the water heater additionally comprises an outer, formed on the housing holder for suspending the water heater to a wall.
Durch Verwendung einer lösbaren Mutter drückt diese beim Anziehen der Schraube gegenüber dem inneren Halter auf das Distanzstück und die Deckplatte. Dabei erfährt das zweite Wärmeisolierteil keine Druckkraft von der Mutter und wird daher vor einer möglichen Beschädigung geschützt. Da die Wärmeübertragung zwischen innerem Speichergefäß und Gehäuse bzw. zwischen innerem und äußerem Halter durch die Wärmeisolierbaugruppe wirksam unterbunden wird, kann die Wärme des im inneren Speichergefäß gespeicherten Warmwassers nicht durch Wärmeleitung auf den äußeren Halter bzw. das Gehäuse übertragen werden, womit der Wärmeverlust zuverlässig reduziert und die Energienutzung optimiert wird.By using a releasable nut, this presses on tightening the screw relative to the inner holder on the spacer and the cover plate. In this case, the second heat-insulating member experiences no pressure force from the mother and is therefore protected from possible damage. Since the heat transfer between the inner storage vessel and the housing or between the inner and outer holder is effectively prevented by the heat insulating assembly, the heat stored in the inner storage vessel hot water can not be transferred by conduction to the outer holder or the housing, whereby the heat loss reliably reduced and energy use is optimized.
Es zeigen
- FIG. 1
- einen Längsschnitt einer Ausführungsform eines erfindungsgemäßen Wassererwärmers,
- FIG. 2
- einen teilweisen Querschnitt durch den Wassererwärmer gemäß
FIG 1 mit dessen Halterbaugruppe, - FIG. 3
- eine dreidimensionale Explosionszeichnung der Halterbaugruppe des Wassererwärmers gemäß
FIG 2 , und - FIG. 4
- in entsprechender Darstellung wie
FIG 3 eine dreidimensionale Explosionszeichnung der Halterbaugruppe des Wassererwärmers aus einem anderen Blickwinkel.
- FIG. 1
- a longitudinal section of an embodiment of a water heater according to the invention,
- FIG. 2
- a partial cross section through the water heater according to
FIG. 1 with its holder assembly, - FIG. 3
- a three-dimensional exploded view of the holder assembly of the water heater according to
FIG. 2 , and - FIG. 4
- in the same way as
FIG. 3 a three-dimensional exploded view of the holder assembly of the water heater from a different angle.
In
Wie in
Um einen Wärmetransfer zwischen innerem Halter 52 und Gehäuse 3 sowie äußerem Halter zu vermeiden, ist am inneren Halter eine Wärmeisolierbaugruppe gemäß
Zur Montage werden das erste und zweite Wärmeisolierteil 61, 62, wie auch in
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009202725359U CN201555352U (en) | 2009-12-08 | 2009-12-08 | Water heater with thermal insulation rack |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2336668A2 true EP2336668A2 (en) | 2011-06-22 |
EP2336668A3 EP2336668A3 (en) | 2014-01-01 |
Family
ID=42615036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100193959 Withdrawn EP2336668A3 (en) | 2009-12-08 | 2010-12-07 | Water heater with thermally insulated holder |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2336668A3 (en) |
CN (1) | CN201555352U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2979978A1 (en) * | 2011-09-08 | 2013-03-15 | Atlantic Industrie Sas | Supporting device for fixing electric water-heater on e.g. wall, of e.g. office, has reinforcements for assembly of clamp fixed to wall to mount clamp according to position chosen from distances between centers defined by reinforcements |
EP2733429A3 (en) * | 2012-11-16 | 2015-11-11 | Mitsubishi Electric Corporation | Hot water storage tank unit |
IT202100025064A1 (en) * | 2021-10-01 | 2023-04-01 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3041306A1 (en) * | 1980-11-03 | 1982-06-03 | August Brötje GmbH & Co, 2902 Rastede | Hot water storage tank - has bottom brackets accommodating feet with insulating components between, and forming union housing support |
AT390502B (en) * | 1987-06-12 | 1990-05-25 | Vaillant Gmbh | PIPE EXTENSION UNIT |
US6591788B2 (en) * | 2000-12-07 | 2003-07-15 | Aos Holding Company | Rooftop water heater |
CN100425924C (en) * | 2006-01-20 | 2008-10-15 | 艾欧史密斯(中国)热水器有限公司 | Total obstructing insulation device and electric water heater employing the same |
-
2009
- 2009-12-08 CN CN2009202725359U patent/CN201555352U/en not_active Expired - Fee Related
-
2010
- 2010-12-07 EP EP20100193959 patent/EP2336668A3/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
None |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2979978A1 (en) * | 2011-09-08 | 2013-03-15 | Atlantic Industrie Sas | Supporting device for fixing electric water-heater on e.g. wall, of e.g. office, has reinforcements for assembly of clamp fixed to wall to mount clamp according to position chosen from distances between centers defined by reinforcements |
EP2733429A3 (en) * | 2012-11-16 | 2015-11-11 | Mitsubishi Electric Corporation | Hot water storage tank unit |
IT202100025064A1 (en) * | 2021-10-01 | 2023-04-01 |
Also Published As
Publication number | Publication date |
---|---|
CN201555352U (en) | 2010-08-18 |
EP2336668A3 (en) | 2014-01-01 |
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