EP1203887B1 - Thermal isolation for hydraulic system - Google Patents
Thermal isolation for hydraulic system Download PDFInfo
- Publication number
- EP1203887B1 EP1203887B1 EP20010125984 EP01125984A EP1203887B1 EP 1203887 B1 EP1203887 B1 EP 1203887B1 EP 20010125984 EP20010125984 EP 20010125984 EP 01125984 A EP01125984 A EP 01125984A EP 1203887 B1 EP1203887 B1 EP 1203887B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermal isolation
- sealing
- thermal insulation
- openings
- shell
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
Definitions
- the invention relates to a thermal insulation shell for enclosing one or more hydraulic devices, in particular pumps, fittings and / or pipes, wherein the heat insulation shell has one or more openings through which parts of the hydraulic device are guided, and wherein between the inner wall of the heat insulation shell and the outer wall of the hydraulic device, a gap is formed.
- thermal insulation shells for thermal insulation or thermal insulation and / or for sound attenuation.
- thermal insulation it is first known to wrap the hydraulic devices by hand with an insulating material, which, however, is associated with a high installation cost.
- DE 43 38 932 discloses a relatively thin-walled thermal insulation shell surrounding a hydraulic device such that the shell forms an air gap with the outside of the hydraulic device.
- the surfaces of the shell inner walls are designed to be highly reflective, to reflect the heat radiation emitted by the hydraulic device to the unit.
- ambient air can flow freely from or into the space between the hydraulic device and the thermal insulation shell and lead by this air exchange to a reduction of the degree of isolation or degree of thermal insulation.
- this air circulation can cause a dewing effect, whereby water settles between the hydraulic device and the thermal insulation shell and can lead to the aforementioned disadvantages of long-term damage.
- Object of the present invention is therefore to provide a structurally simple, inexpensive to manufacture and easy to handle heat insulation shell of the type mentioned above, which causes optimal thermal insulation at low external dimensions and low weight and in the replacement of the air in the intermediate space with the ambient air can take place.
- the main advantage lies in the fact that the greatest possible sealing effect is achieved, which prevents air circulation between the environment and the gap. In this way, the air permanently in the intermediate space contributes to optimum thermal insulation.
- the achievable insulating value is equivalent to the insulating effect of a thick-walled and massive insulation.
- the condensation effect is avoided by the absence of air exchange, so that the heat-insulating shell according to the invention can be used in an optimal manner even when prone to condensation cold water applications.
- the existing of a relatively soft and / or elastic material sealing lips can be easily adapted to all unevenness of the hydraulic device, so that the required sealing of all openings of the thermal insulation shell is particularly easy to manufacture.
- the sealing means are integrally connected to the heat-insulating shell. It is particularly advantageous in this case if the sealing means are injected into the openings of the thermal insulation shell, that they are mechanically coupled for example in an existing Styrofoam or similar foamed materials thermal insulation shell and / or in a plastic heat insulation shell in the microstructure of the thermal insulation shell. In this way, the sealants can even with more complex Geometries are relatively easy to install. It may also be advantageous to form the sealing means in one piece with the heat-insulating shell.
- the sealing means can also eino positively and / or non-positively in the edges of the openings of the heat insulation shell.
- This embodiment is particularly suitable for a relatively simple geometry of the hydraulic device.
- the heat-insulating shell is made of plastic, preferably injection-molded or cast. As a result, complex geometries can be easily produced at a relatively low weight. It is also favorable if the surfaces of the inner walls of the thermal insulation shell are designed to further increase the thermal insulation completely or partially reflective.
- the thermal insulation shell consists of two shell halves, which are held in a form-fitting and / or non-positively close to each other.
- the two shell halves are hinged together via a straight bending point.
- the thermal insulation shell 1 encloses a centrifugal motor pump 2, wherein three openings 3 are provided, through which the pressure port 4 and the suction nozzle 5 and the motor housing 6 of the drive motor 7 are guided as parts of the centrifugal motor pump 2. Between the inner wall 8 of the thermal insulation shell 1 and the outer wall 9 of the centrifugal motor pump 2, a gap 10 is formed, which is filled with an insulating air layer.
- the sealing lips 11 are integrally injected in a two-stage manufacturing process in the edges of the openings 3, wherein a mechanical or chemical coupling takes place in the microstructure of the previously made opening edges of the thermal insulation shell 1.
- the thermal insulation shell 1 is sprayed with a wall thickness of 1 to 3 mm, in particular 1.5 to 2.5 mm made of plastic, in particular polypropylene.
- the thermal insulation shell 1 consists of two shell halves 12a and 12b, which are connected by a rectilinear film hinge 13 with each other, so that they are made in one piece and thus are one-piece.
- the shell halves 12a, 12b are positively and detachably connected to one another by a pin closure 14.
- a pin closure 14 is at the edges 15 of a shell halves 12a also sealing lips 16 are provided, which abut against the edges 17 of the other shell half 12b in the closed state.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Insulation (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
Die Erfindung betrifft eine Wärmedämmschale zum Umschließen von einer oder mehreren hydraulischen Einrichtungen, insbesondere von Pumpen, Armaturen und/oder Rohren, wobei die Wärmedämmschale eine oder mehrere Öffnungen aufweist, durch die Teile der hydraulischen Einrichtung hindurch geführt sind, und wobei zwischen der Innenwand der Wärmedämmschale und der Außenwand der hydraulischen Einrichtung ein Zwischenraum ausgebildet ist.The invention relates to a thermal insulation shell for enclosing one or more hydraulic devices, in particular pumps, fittings and / or pipes, wherein the heat insulation shell has one or more openings through which parts of the hydraulic device are guided, and wherein between the inner wall of the heat insulation shell and the outer wall of the hydraulic device, a gap is formed.
Es ist bekannt, derartige Wärmedämmschalen zur Wärmedämmung bzw. Wärmeisolierung und/oder zur Schalldämpfung zu verwenden. Zur Wärmeisolierung ist es zunächst bekannt, die hydraulischen Einrichtungen von Hand mit einem Isolierungsmaterial zu umwickeln, was jedoch mit einem hohen Montageaufwand verbunden ist.It is known to use such thermal insulation shells for thermal insulation or thermal insulation and / or for sound attenuation. For thermal insulation, it is first known to wrap the hydraulic devices by hand with an insulating material, which, however, is associated with a high installation cost.
Daher wurden Dämmschalen vorgeschlagen, die die hydraulischen Einrichtungen in Form einer gehäuseähnlichen Verkleidung umgeben. Eine derartige Isolierung ist beispielsweise aus der deutschen Offenlegungsschrift DE-OS 31 09 624 bekannt. Diese Isolierung ist jedoch insbesondere aus Kunststoffschaum sehr dickwandig ausgeführt und liegt direkt an der Außenwandung der hydraulischen Einrichtung an. Auf diese Weise kann sie zwar zugleich auch als Verpackung der hydraulischen Einrichtung fungieren, aber sie benötigt auch einen entsprechend großen Bauraum. Außerdem kann es zwischen der hydraulischen Einrichtung und der Isolierung zur Zirkulation von Luft und/oder Wasser kommen, was die Isolationswirkung reduziert bzw. langfristig zur Beschädigung der hydraulischen Einrichtung und/oder der Isolierung führen kann.Therefore Dämmschalen have been proposed, which surround the hydraulic devices in the form of a housing-like panel. Such isolation is known for example from German Patent Application DE-OS 31 09 624. However, this insulation is made very thick-walled in particular made of plastic foam and is located directly on the outer wall of the hydraulic device. In this way, she can also as Packaging of the hydraulic device act, but it also requires a correspondingly large space. In addition, it can come between the hydraulic device and the insulation to the circulation of air and / or water, which reduces the insulation effect or long term damage to the hydraulic device and / or insulation can result.
Ferner offenbart die DE 43 38 932 eine relativ dünnwandige Wärmedämmschale, die eine hydraulische Einrichtung derart umgibt, daß die Schale mit der Außenseite der hydraulischen Einrichtung einen Luft-Zwischenraum bildet. Damit auch bei einer relativ dünnwandigen Wärmedämmschale eine ausreichende Dämmwirkung erzielt werden kann, sind die Flächen der Schaleninnenwände hoch reflektierend ausgeführt, um die von der hydraulischen Einrichtung abgegebene Wärmestrahlung zum Aggregat zurückzuwerfen. Aber auch hier kann Umgebungsluft frei aus bzw. in den Zwischenraum zwischen der hydraulischen Einrichtung und der Wärmedämmschale strömen und durch diesen Luftaustausch zu einer Reduzierung des Isolationsgrades bzw. Wärmedämmgrades führen. Außerdem kann diese Luftzirkulation bei Kaltwasser-Anwendungen einen Betauungseffekt hervorrufen, wobei sich Wasser zwischen der hydraulischen Einrichtung und der Wärmedämmschale absetzt und zu den zuvor genannten Nachteilen einer langfristigen Beschädigung führen kann.Further, DE 43 38 932 discloses a relatively thin-walled thermal insulation shell surrounding a hydraulic device such that the shell forms an air gap with the outside of the hydraulic device. Thus, even with a relatively thin-walled thermal insulation shell sufficient insulation effect can be achieved, the surfaces of the shell inner walls are designed to be highly reflective, to reflect the heat radiation emitted by the hydraulic device to the unit. But even here ambient air can flow freely from or into the space between the hydraulic device and the thermal insulation shell and lead by this air exchange to a reduction of the degree of isolation or degree of thermal insulation. In addition, in cold water applications, this air circulation can cause a dewing effect, whereby water settles between the hydraulic device and the thermal insulation shell and can lead to the aforementioned disadvantages of long-term damage.
Aufgabe der vorliegenden Erfindung ist es daher, eine konstruktiv einfache, preiswerte herzustellende und leicht handhabbare Wärmedämmschale der eingangs genannten Art zu schaffen, die bei geringen Außenabmessungen und geringem Gewicht eine optimale Wärmedämmung bewirkt und bei der ein Austausch der im Zwischenraum befindlichen Luft mit der Umgebungsluft nicht stattfinden kann.Object of the present invention is therefore to provide a structurally simple, inexpensive to manufacture and easy to handle heat insulation shell of the type mentioned above, which causes optimal thermal insulation at low external dimensions and low weight and in the replacement of the air in the intermediate space with the ambient air can take place.
Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung nach Anspruch 1 gelöst. Wesentlich ist dabei, daß an allen Öffnungen Dichtlippen vorgesehen sind, die an den Teilen der hydraulischen Einrichtung dicht anliegen, so daß der Zwischenraum gegenüber der Umgebung abgeschlossen ist. Die Dichtlippen laufen dabei über den gesammten Umfang der Öffnung herum.This object is achieved by a device according to
Der Hauptvorteil liegt dabei darin, daß ein weitestmöglicher Abdichtungseffekt erzielt wird, der eine Luftzirkulation zwischen der Umgebung und dem Zwischenraum verhindert. Auf diese Weise trägt die dauerhaft in dem Zwischenraum befindliche Luft zu einer optimalen Wärmeisolierung bei. Der hierbei erreichbare Isolierwert ist mit der Isolierwirkung einer dickwandigen und massiven Isolierung gleichzusetzen.The main advantage lies in the fact that the greatest possible sealing effect is achieved, which prevents air circulation between the environment and the gap. In this way, the air permanently in the intermediate space contributes to optimum thermal insulation. The achievable insulating value is equivalent to the insulating effect of a thick-walled and massive insulation.
Auch wird durch den nicht vorhandenen Luftaustausch der Betauungseffekt vermieden, so daß die erfindungsgemäße Wärmedämmschale in optimaler Weise auch bei für Kondensatbildung anfälligen Kaltwasser-Anwendungen einsetzbar ist.Also, the condensation effect is avoided by the absence of air exchange, so that the heat-insulating shell according to the invention can be used in an optimal manner even when prone to condensation cold water applications.
Die aus einem relativ weichen und/oder elastischen Material bestehenden Dichtlippen können sich besonders leicht allen Unebenheiten der hydraulischen Einrichtung anpassen, so daß die erforderliche Abdichtung aller Öffnungen der Wärmedämmschale besonders einfach herzustellen ist.The existing of a relatively soft and / or elastic material sealing lips can be easily adapted to all unevenness of the hydraulic device, so that the required sealing of all openings of the thermal insulation shell is particularly easy to manufacture.
Bei einfacher Konstruktion und Montagemöglichkeit wird somit eine leichte und kleinbauende sowie kostengünstig herstellbare Wärmedämmschale geschaffen, die leicht handhabbar ist.With a simple design and mounting option thus a lightweight and small-sized and inexpensive to produce heat insulation shell is created, which is easy to handle.
Gemäß einer besonders bevorzugten Ausführungsform der Erfindung wird vorgeschlagen, daß die Dichtmittel stoffschlüssig mit der Wärmedämmschale verbunden sind. Besonders günstig ist es hierbei, wenn die Dichtmittel derart in die Öffnungen der Wärmedämmschale eingespritzt sind, daß sie beispielsweise bei einer aus Styropor oder ähnlichen geschäumten Stoffen bestehenden Wärmedämmschale mechanisch und/oder bei einer aus Kunststoff bestehenden Wärmedämmschale chemisch in die Mikrostruktur der Wärmedämmschale eingekoppelt sind. Auf diese Weise können die Dichtmittel auch bei komplexeren Geometrien relativ einfach angebracht werden. Auch kann es vorteilhaft sein, die Dichtmittel einstückig mit der Wärmedämmschale auszubilden.According to a particularly preferred embodiment of the invention it is proposed that the sealing means are integrally connected to the heat-insulating shell. It is particularly advantageous in this case if the sealing means are injected into the openings of the thermal insulation shell, that they are mechanically coupled for example in an existing Styrofoam or similar foamed materials thermal insulation shell and / or in a plastic heat insulation shell in the microstructure of the thermal insulation shell. In this way, the sealants can even with more complex Geometries are relatively easy to install. It may also be advantageous to form the sealing means in one piece with the heat-insulating shell.
Gemäß einer alternativen Ausführungsform der Erfindung können die Dichtmittel auch formschlüssig und/oder kraftschlüssig in den Rändern der Öffnungen der Wärmedämmschale einliegen. Diese Ausführung eignet sich insbesondere für eine relativ einfache Geometrie der hydraulischen Einrichtung.According to an alternative embodiment of the invention, the sealing means can also einliegen positively and / or non-positively in the edges of the openings of the heat insulation shell. This embodiment is particularly suitable for a relatively simple geometry of the hydraulic device.
Besonders vorteilhaft ist es ferner, wenn die Wärmedämmschale aus Kunststoff gefertigt, vorzugsweise gespritzt oder gegossen ist. Hierdurch lassen sich bei relativ geringem Gewicht auch komplexere Geometrien einfach herstellen. Günstig ist es auch, wenn die Flächen der Innenwände der Wärmedämmschale zur weiteren Erhöhung der Wärmeisolierung vollständig oder teilweise reflektierend ausgeführt sind.It is also particularly advantageous if the heat-insulating shell is made of plastic, preferably injection-molded or cast. As a result, complex geometries can be easily produced at a relatively low weight. It is also favorable if the surfaces of the inner walls of the thermal insulation shell are designed to further increase the thermal insulation completely or partially reflective.
Besonders vorteilhaft ist es ferner, wenn die Wärmedämmschale aus zwei Schalenhälften besteht, die formschlüssig und/oder kraftschlüssig dicht aneinander gehalten sind. Vorzugsweise wird hierbei vorgeschlagen, daß die beiden Schalenhälften über eine gerade Biegestelle klappbar miteinander verbunden sind.It is also particularly advantageous if the thermal insulation shell consists of two shell halves, which are held in a form-fitting and / or non-positively close to each other. Preferably, in this case, it is proposed that the two shell halves are hinged together via a straight bending point.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung und den in den Zeichnungen dargestellten Ausführungsbeispielen.Further advantages and features of the invention will become apparent from the following description and the embodiments illustrated in the drawings.
Es zeigen:
- Figur 1:
- Eine Schnittansicht einer auf eine Pumpe aufgesetzten Wärmedämmschale, wobei die Pumpe nicht geschnitten ist;
- Figur 2:
- eine Innenansicht der abgenommenen und aufgeklappten Wärmedämmschale
- Figur 3:
- Seitenansicht der aufgeklappten Wärmedämmschale aus Richtung A in
Figur 2; und - Figur 4:
- Seitenansicht der zusammengeklappten Wärmedämmschale ohne Pumpe aus Richtung B in
Figur 1.
- FIG. 1:
- A sectional view of a mounted on a pump heat insulation shell, the pump is not cut;
- FIG. 2:
- an interior view of the removed and unfolded thermal insulation shell
- FIG. 3:
- Side view of the unfolded thermal insulation shell from direction A in Figure 2; and
- FIG. 4:
- Side view of the folded thermal insulation shell without pump from direction B in Figure 1.
Die Wärmedämmschale 1 umschließt eine Kreiselmotorpumpe 2, wobei drei Öffnungen 3 vorgesehen sind, durch die der Druckstutzen 4 und der Saugstutzen 5 sowie das Motorgehäuse 6 des Antriebsmotors 7 als Teile der Kreiselmotorpumpe 2 hindurch geführt sind. Zwischen der Innenwand 8 der Wärmedämmschale 1 und der Außenwand 9 der Kreiselmotorpumpe 2 ist ein Zwischenraum 10 ausgebildet, der mit einer isolierenden Luftschicht gefüllt ist.The
Damit für eine optimale Wärmeisolation bzw. Wärmedämmung diese im Zwischenraum 10 befindliche Luftschicht nicht ausgetauscht bzw. mit der Umgebungsluft gemischt wird sind an allen drei Öffnungen 3 Dichtlippen 11 als Dichtmittel vorgesehen. Die Dichtlippen 11 laufen über den vollständigen Umfang der Öffnungen 3 um und liegen dicht an den Außenseiten des Druckstutzens 4, des Saugstutzens 5 sowie des Motorgehäuses 6 an. Auch Unebenheiten in den Oberflächen dieser Teile 4, 5 bzw. 6 können durch die aus einem weichen elastischen Material bestehenden Dichtlippen 11 leicht ausgeglichen werden. Auf diese Weise ist der Zwischenraum 10 dicht gegenüber der Umgebung abgeschlossen. Eine Luftzirkulation zwischen der Umgebung und dem Zwischenraum 10 kann daher nicht stattfinden, so daß die isolierende Luftschicht dauerhaft in dem Zwischenraum gehalten ist.This is not exchanged or mixed with the ambient air for optimum thermal insulation or thermal insulation located in the
Die Dichtlippen 11 sind in einem zweistufigen Fertigungsprozess stoffschlüssig in die Ränder der Öffnungen 3 eingespritzt, wobei eine mechanische bzw. chemische Einkopplung in die Mikrostruktur der zuvor gefertigten Öffnungsränder der Wärmedämmschale 1 stattfindet. Die Wärmedämmschale 1 ist dabei mit einer Wanddicke von 1 bis 3 mm, insbesondere 1,5 bis 2,5 mm aus Kunststoff, insbesondere aus Polypropylen gespritzt.The
Die Wärmedämmschale 1 besteht aus zwei Schalenhälften 12a und 12b, die durch ein geradliniges Filmscharnier 13 miteinander verbunden sind, so daß sie einstückig hergestellt werden und damit einteilig sind. Auf der dem Scharnier 13 gegenüberliegenden Seite werden die Schalenhälften 12a, 12b durch einen Stiftverschluss 14 kraftschlüssig und lösbar miteinander verbunden. Hierbei sind an den Kanten 15 einer Schalenhälften 12a ebenfalls Dichtlippen 16 vorgesehen, die an den Rändern 17 der anderen Schalenhälfte 12b im geschlossenen Zustand anliegen.The
Auf diese Weise sind an allen Nahtstellen der Wärmedämmschale 1 Hart-Weich-Werkstoffpaarungen vorgesehen, die eine größtmögliche Dichtheit des Zwischenraums 10 und somit eine optimale Wärmeisolierung gewährleisten.In this way, hard-soft material pairings are provided at all seams of the
Claims (8)
- Thermal isolation (1) for enclosing hydraulic systems (2), particularly pumps, fittings and/or pipes, in which the thermal isolation (1) has one or several openings (3), through which the parts (4, 5, 6) of the hydraulic system (2) are guided, and in which an interspace (10) is formed between the inner wall (8) of the thermal isolation and the outer wall (9) of the hydraulic system,
characterised in that
means of sealing (11) are provided on all openings (3), which fit closely on the parts (4, 5, 6) of the hydraulic system (2) to seal them so that the interspace (10) is closed off with reference to the surroundings and the means of sealing are formed by sealing lips (11), which run around the whole circumference of the opening (3). - Thermal isolation according to claim 12, characterised in that the means of sealing (11) are connected with the thermal isolation (2) in a firmly bonded way.
- Thermal isolation according to claim 2, characterised in that the means of sealing (11) are sprayed into the openings (3) of the thermal isolation (1) in such a way that they are chemically and/or mechanically coupled into the microstructure of the thermal isolation (1).
- Thermal isolation according to one of the previous claims, characterised in that the means of sealing (11) are made in one piece with the thermal isolation (1).
- Thermal isolation according to claim 1, characterised in that the means of sealing (11) are inserted in the edges of the openings (3) of the thermal isolation (1) in a positive and/or non positive way.
- Thermal isolation according to one of the previous claims, characterised in that it is sprayed or cast from plastic.
- Thermal isolation according to one of the previous claims, characterised in that it consists of two halves (12a, 12b) which are held closely against each other to seal them in a positive and/or non-positive way.
- Thermal isolation according to claim 7, characterised in that both halves (12a, 12b) are connected to each other via a hinge (13) so that they can fold, in which the hinge (13) is made in one piece with both halves (12a, 12b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10054310 | 2000-11-02 | ||
| DE2000154310 DE10054310B4 (en) | 2000-11-02 | 2000-11-02 | Thermal insulation shell for hydraulic equipment |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1203887A2 EP1203887A2 (en) | 2002-05-08 |
| EP1203887A3 EP1203887A3 (en) | 2004-06-16 |
| EP1203887B1 true EP1203887B1 (en) | 2007-02-28 |
Family
ID=7661900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20010125984 Expired - Lifetime EP1203887B1 (en) | 2000-11-02 | 2001-10-31 | Thermal isolation for hydraulic system |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1203887B1 (en) |
| DE (2) | DE10054310B4 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004049569A1 (en) * | 2004-10-12 | 2006-04-20 | Wilo Ag | External thermal insulation of a pump |
| DE102013225065B4 (en) * | 2013-12-06 | 2016-04-14 | Ksb Aktiengesellschaft | Pump housing in plastic construction |
| CN105317754A (en) * | 2015-10-19 | 2016-02-10 | 季裕成 | Pump body thermal insulation device of petrochemical process pump |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7032819U (en) * | 1970-09-03 | 1970-12-10 | Parr Adolf | DEVICE FOR INSULATION OF VALVES AND THE LIKE. |
| DE2855220A1 (en) * | 1978-12-21 | 1980-07-10 | Hatz Motoren | INTERNAL COMBUSTION ENGINE WITH NOISE-REDUCING PANELING |
| DE3109624C2 (en) * | 1981-03-13 | 1986-01-30 | Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund | Circulation pump |
| DE8702553U1 (en) * | 1987-02-19 | 1987-07-30 | Jacobs, Heinz-Josef, 4790 Paderborn | Insulating sleeve (cover) |
| AT389744B (en) * | 1987-09-09 | 1990-01-25 | Steyr Daimler Puch Ag | SOUND-INSULATING PANELING FOR INTERNAL COMBUSTION ENGINES |
| DE4222297A1 (en) * | 1992-07-08 | 1994-01-13 | Jacobs Heinz Josef | Housing for heat insulated armature or flange coupling |
| DE4239575C2 (en) * | 1992-11-25 | 1995-11-23 | Hella Kg Hueck & Co | Silencers for pneumatic pumps, in particular vane pumps in motor vehicles |
| IT231460Y1 (en) * | 1993-07-27 | 1999-08-03 | Iveco Fiat | SOUNDPROOFING DEVICE FOR VEHICLES, IN PARTICULAR VEHICLES |
| DE4338932A1 (en) * | 1993-11-15 | 1995-05-18 | Wilo Gmbh | Insulation shell for surrounding centrifugal pump, motor or armature |
| DE19710041B4 (en) * | 1997-03-12 | 2004-01-22 | Theodor Heimeier Metallwerk Gmbh & Co. Kg | Connection cover for radiator supply and / or return connections |
| DE19733432A1 (en) * | 1997-08-01 | 1999-02-04 | Itt Mfg Enterprises Inc | Pressure control device |
| US5929394A (en) * | 1997-10-07 | 1999-07-27 | Westerbeke Corporation | Sound enclosure |
| DE19946593A1 (en) * | 1998-10-05 | 2000-04-06 | Luk Lamellen & Kupplungsbau | Hydraulic clutch and brake operating systems, for motor vehicle, includes master and slave cylinders, partially cover with gold, gold alloy, copper or carbon protective layers |
| DE29817949U1 (en) * | 1998-10-08 | 1999-01-07 | Baumann, Roland, Dipl.-Ing. (FH), 89081 Ulm | Device for the thermal insulation of pipe connections |
-
2000
- 2000-11-02 DE DE2000154310 patent/DE10054310B4/en not_active Expired - Fee Related
-
2001
- 2001-10-31 EP EP20010125984 patent/EP1203887B1/en not_active Expired - Lifetime
- 2001-10-31 DE DE50112109T patent/DE50112109D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE10054310B4 (en) | 2004-01-29 |
| DE10054310A1 (en) | 2002-06-06 |
| EP1203887A2 (en) | 2002-05-08 |
| EP1203887A3 (en) | 2004-06-16 |
| DE50112109D1 (en) | 2007-04-12 |
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