EP0786620A1 - Housing for receiving individual components of a cooling or heating supply installation - Google Patents

Housing for receiving individual components of a cooling or heating supply installation Download PDF

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Publication number
EP0786620A1
EP0786620A1 EP97100828A EP97100828A EP0786620A1 EP 0786620 A1 EP0786620 A1 EP 0786620A1 EP 97100828 A EP97100828 A EP 97100828A EP 97100828 A EP97100828 A EP 97100828A EP 0786620 A1 EP0786620 A1 EP 0786620A1
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EP
European Patent Office
Prior art keywords
housing
strip
shells
rabbet
housing according
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.)
Granted
Application number
EP97100828A
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German (de)
French (fr)
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EP0786620B1 (en
Inventor
Josef Dumser
Karl-Heinz Kolaska
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Storopack Hans Reichenecker GmbH
Watts Industries Deutschland GmbH
Original Assignee
Storopack Hans Reichenecker GmbH
Dumser Metallbau GmbH and Co KG
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Publication of EP0786620A1 publication Critical patent/EP0786620A1/en
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Publication of EP0786620B1 publication Critical patent/EP0786620B1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20Casings or covers

Definitions

  • the invention relates to a housing for accommodating individual components of a heating or cooling supply system according to the preamble of patent claim 1.
  • the invention has for its object to provide a housing of the generic type, in which the connection area is designed so that the individual shell-shaped housing parts can be quickly and easily plugged together so that a self-locking connection is created Avoiding heat loss as far as possible.
  • the basic idea of the invention is that a guide surface is additionally provided for the undercut locking surface of the fold.
  • the lower inner edge of the rebate strip first hits the inclined guide surface of the groove on the other half-shell and slides along it. A gradual, elastic widening of the fold bar takes place.
  • the folding strip snaps into the locking surface due to its elastic behavior and holds both half-shells together.
  • the circumferential guide surface causes the half-shells to be centered with one another in this process. As a result, the half-shells no longer need to lie exactly one above the other when assembling the housing; it is sufficient if the fold bar lies in the area of the guide surface. Closing the housing is thus made considerably easier.
  • the design of the fold connection according to the invention also ensures that, even if the shell is closed and opened several times, as is necessary in the case of repair or revision work, the fold connection is not overused by excessive bending of the material.
  • Another advantage is that the combination of locking and guide surface in the joint can not form a continuous gap. At least one of the two Surfaces lie on their corresponding counter surface of the other half shell. The risk of a thermal bridge in the butt joint is thus eliminated.
  • Fig. 1 shows the invention when used as thermal insulation for pipelines.
  • Expanded polypropylene (EPP) is particularly suitable as a heat-insulating material; however, expanded polyethylene (EPE), polystyrene (EPS) or the like are also conceivable.
  • EPP expanded polypropylene
  • EPE expanded polyethylene
  • EPS polystyrene
  • important material properties are the strength, which determines the forces that can be transmitted in the connection joint, and the elasticity, which is a prerequisite for independent locking.
  • the housing 2 consists of two full-walled half-shells, here an upper shell 3 and a lower shell 4, which lie on one another with their larger surface.
  • Half of the two half-shells 3, 4 each hold the pipes 1, 1 'in recesses 5, 5' provided for this purpose.
  • the half-shells 3, 4 are connected to one another in a positive and non-positive manner by means of a fold connection 6 shown larger in FIG. 3.
  • the housing 7 consists of an upper shell 8 and a lower shell 9.
  • the half-shells 8, 9 are thin-walled here, so that they enclose a cavity 10.
  • a ready-to-install assembly of a heating system can be arranged in this cavity 10.
  • the upper shell 8 and the lower shell 9 are connected to one another in a positive and non-positive manner by means of a fold formation 11 according to the invention.
  • FIG. 3 shows the detail III from FIG. 2, the connection point between the upper shell 8 and the lower shell 9 on a larger scale.
  • the lower shell 9 has a groove strip 12 and the upper shell 8 has a corresponding folding strip 13.
  • the flank 14 of the groove strip 12 which interacts with the folded strip 13 the lower shell 9 consists in its foot area of a locking surface 16 inclined at an angle beta to the perpendicular 15 to the folding ledge 13 and an adjoining opposite and inclined guide surface 17 at an angle alpha to the vertical 15.
  • the size ratio of the locking surface 16 and the guide surface 17 can vary vary according to purpose; in the example shown, both surfaces 16 and 17 and both angles alpha and beta are each of the same size.
  • the guide surface 17 can be enlarged at the expense of the locking surface 16 while the height h of the fold remains the same by selecting a smaller angle of inclination alpha. The same applies to the reverse case.
  • the fold bar 13 of the upper shell 8 is designed in the shape and size of the groove bar 12 accordingly.
  • the width b of the fold bar 13 at the narrowest point and its height h are dimensioned in the same way as the inclination angles alpha and beta of the guide and locking plane 16, 17 and the resulting distance a of the fold edges so that they are dependent on the elasticity and the restoring forces a snap effect of the material used can be achieved without the material tiring when the housing 7 is closed and opened frequently.
  • the lower corner 18 of the folding strip 13 is advantageously somewhat rounded.
  • FIG. 4 An alternative to FIG. 3 embodiment of the fold connection is shown in FIG. 4.
  • the flank 21 of the groove strip 20 which cooperates with the folded strip 19 is convex, so that the upper half of the flank 21 represents the guide surface 22 and the adjoining lower region the locking surface 23
  • This connection works corresponds to the embodiment shown in FIG. 3, so that here too the dimensions of the fold have to be matched to the material properties in such a way that the deformations that occur when closing and opening remain in the elastic range.
  • FIGS. 3 and 4 can also be formed symmetrically to increase them.
  • the locking surface 24, which is decisive for the composite effect, is doubled.
  • FIG. 5 shows such an embodiment.
  • the rebate strip 25 slides along the guide surfaces 26.
  • the two pointed ends of the dovetail-shaped strip 25 are partly elastically compressed and partly bent over until they are the narrowest point who have also passed dovetail-shaped groove; only then is it possible to snap into the locking surfaces 24 as a result of the restoring forces of the material.
  • Such a connection naturally takes up more space in the direction of the joint than the simple design, but avoids any deformation of the shells 8 and 9 that may occur when it snaps into place. For this reason, it is particularly suitable for housing types such as e.g. described in Fig. 1.
  • the groove and the rebate strip interlock according to the principle of male and female for interlocking the surfaces, the raised points occurring in the side surface of the groove.
  • Folded connections are also conceivable, their elevations in the fold bar are arranged and engage in recesses of the groove and thus lead to the locking of the half-shells. Examples of such designs are indicated in FIGS. 6 and 7. 7 corresponds in its mode of operation to that according to FIG. 4 and FIG. 6 to that according to FIG. 5.

Abstract

A housing for receiving individual components of a heating or cooling installation is formed of at least two shells of thermally insulating plastic which enclose the components between themselves. The shells are provided at their respective facing edges with a rabbet connection formed of a rabbet strip and a groove strip corresponding thereto in shape and dimensions. The flank of the groove strip of the bottom shell which cooperates with the rabbet strip is divided into an upper partial surface inclined relative to the rabbet strip at an angle alpha to the normal line and a lower partial surface which is inclined at an angle beta to the normal line. The angles alpha and beta have opposite rotational directions. The rabbet strip of the top shell has surfaces corresponding to the surfaces of the groove strip so as to substantially facilitate closing and opening of the housing.

Description

Die Erfindung betrifft ein Gehäuse zur Aufnahme einzelner Komponenten einer Wärme- oder Kälteversorgungsanlage gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a housing for accommodating individual components of a heating or cooling supply system according to the preamble of patent claim 1.

Zur Verkleidung und Wärmedämmung von Rohrleitungen ist es bekannt, zylindermantelförmige einstückige Umhüllungen aus wärmedämmendem Material über die Leitungen zu schieben. Die Dicke der Umhüllungen kann dabei mehrere Zentimeter betragen. Durch ihre einstückige Ausbildung besitzen diese Verkleidungen ein sehr gutes Wärmedämmvermögen. Wärmebrücken, wie z.B. beim stumpfen Stoß zweier Halbschalen, werden weitestgehend vermieden. Allerdings können diese Verkleidungen zur Montage nur von einem freien Ende der Rohrleitung aus über die Leitung geschoben werden. Zur nachträglichen Wärmedämmung einer bereits installierten Heizungsanlage eignen sich die Verkleidungen nicht. Im Falle einer Revision müssen die Umhüllungen in Längsrichtung aufgeschnitten werden. Eine erneute Verwendung der aufgeschnittenen Verkleidungen ist nur unter Inkaufnahme eines schlechteren Wärmedämmvermögens möglich.For cladding and thermal insulation of pipelines, it is known to slide cylindrical jacket-shaped, one-piece envelopes made of heat-insulating material over the lines. The thickness of the wrappings can be several centimeters. Thanks to their one-piece design, these claddings have very good thermal insulation properties. Thermal bridges, e.g. in the event of a butt joint between two half-shells, are largely avoided. However, these covers can only be pushed over a line from a free end of the pipeline. The cladding is not suitable for subsequent thermal insulation of an already installed heating system. In the event of a revision, the wrappings must be cut open lengthways. A re-use of the cut-open cladding is only possible if poor thermal insulation capacity is accepted.

Aus diesen Gründen wurden zur wärmedämmenden Umhüllung von Rohrleitungen auch schon Halbschalen verwendet, die an ihrer Verbindungsstelle stumpf gestoßen werden. Zum Zusammenhalten der Schalen wird die Stoßstelle mit einem Klebestreifen überdeckt, der die Mantelflächen der beiden Halbschalen entlang der Stoßstelle verbindet. Diese Ausbildung erlaubt zwar eine nachträgliche Montage der Verkleidungen bzw. eine Revision der Rohrleitungen, sie erfordert jedoch ein umständliches und aufwendiges Verkleben der Stoßstelle. Hinzu kommt, daß ein stumpfer Stoß stets die Gefahr eines ungewollten Wärmeübergangs birgt.For these reasons, half-shells have already been used for the thermal insulation of pipelines, which are butted at their connection point. To hold the shells together, the joint is covered with an adhesive strip that connects the lateral surfaces of the two half-shells along the joint. Although this training permits a subsequent assembly of the cladding or a revision of the piping, it requires a laborious and time-consuming gluing of the joint. In addition, a blunt shock always carries the risk of unwanted heat transfer.

Schließlich ist es auch bekannt, zu einer einbaufertigen Baugruppe zusammengefaßte Rohrstränge, Anschlüsse und Armaturen einer Wärme- oder Kälteversorgungsanlage in einem aus zwei Halbschalen bestehenden Gehäuse aus wärmedämmendem Kunststoff, insbesondere expandiertem Polypropylen unterzubringen. Zum einfachen und schnellen Schließen der beiden Halbschalen und zur Vermeidung von Wärmebrücken ist der Stoßbereich nicht stumpf, sondern in Form einer einfach hinterschnittenen Falzleiste auf der einen Halbschale und der entsprechenden Nut auf der anderen Halbschale ausgebildet (EP 0 561 037 A1). Beim Zusammendrücken der beiden Halbschalen findet über die hinterschnittenen Flächen ein Einrasten und gegenseitiges Verriegeln statt.Finally, it is also known to accommodate bundles of pipes, connections and fittings of a heating or cooling supply system combined in a ready-to-install assembly in a housing made of heat-insulating plastic, in particular expanded polypropylene, consisting of two half-shells. For easy and quick closing of the two half-shells and to avoid thermal bridges, the butt area is not blunt, but in the form of a simply undercut folding strip on one half-shell and the corresponding groove on the other half-shell (EP 0 561 037 A1). When the two half-shells are pressed together, the undercut surfaces snap into place and mutually lock.

Um das Zusammendrücken der beiden Halbschalen und das Einrasten der hinterschnittenen Flächen zu ermöglichen, müssen die rechtwinklig zur Bewegungsrichtung der Halbschalen liegenden hinterschnittenen Falze mit ihren ebenen Teilflächen exakt aufeinander gelegt werden, da der zum Einrasten aufzubringende vertikale Druck allein durch die Elastizität des Materials ein Nachgeben nach der Seite bewirken muß, um die Kante des oberen Falzes über diejenige des unteren Falzes gleiten zu lassen. Diese Genauigkeit der Lage ist oft nicht einzuhalten; wird sie nicht erreicht, führt ein Verkanten dazu, daß die Falzverbindung an einem Rand einrastet, am gegenüberliegenden Rand aber so weit auseinander gerät, daß ein Einrasten nicht mehr möglich ist.In order to enable the two half-shells to be pressed together and the undercut surfaces to snap into place, the undercut folds lying at right angles to the direction of movement of the half-shells must be placed exactly on top of one another with their flat partial surfaces, since the vertical pressure to be snapped in yields only because of the elasticity of the material the side must cause the edge of the upper fold to slide over that of the lower fold. This accuracy of the situation can often not be maintained; if it is not reached, tilting leads to the fact that the fold connection engages on one edge, but on the opposite edge is so far apart that it is no longer possible to engage.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, ein Gehäuse der gattungsgemäßen Art anzugeben, bei dem der Verbindungsbereich so ausgebildet ist, daß die einzelnen schalenförmigen Gehäuseteile auf einfache Weise schnell und problemlos so zusammengesteckt werden können, daß eine selbstarretierende Verbindung entsteht, die Wärmeverluste weitestgehend vermeidet.Against this background, the invention has for its object to provide a housing of the generic type, in which the connection area is designed so that the individual shell-shaped housing parts can be quickly and easily plugged together so that a self-locking connection is created Avoiding heat loss as far as possible.

Gemäß der Erfindung wird diese Aufgabe durch ein Gehäuse mit den Merkmalen des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by a housing with the features of claim 1.

Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.Advantageous further developments result from the subclaims.

Der Grundgedanke der Erfindung besteht darin, daß zu der hinterschnittenen Verriegelungsfläche des Falzes zusätzlich noch eine Führungsfläche vorgesehen ist. Beim Zusammendrücken zweier Halbschalen trifft dabei die untere innere Kante der Falzleiste zunächst auf die geneigte Führungsfläche der Nut an der anderen Halbschale und gleitet an ihr entlang. Dabei erfolgt ein allmähliches, elastisches Aufweiten der Falzleiste. Beim Übergang von der Führungszur Verriegelungsfläche schnappt die Falzleiste infolge ihres elastischen Verhaltens in die Verriegelungsfläche und hält beide Halbschalen zusammen. Die umlaufende Führungsfläche bewirkt bei diesem Vorgang eine gleichzeitige Zentrierung der Halbschalen zueinander. Dadurch brauchen die Halbschalen beim Zusammensetzen des Gehäuses nicht mehr exakt übereinanderzuliegen; es genügt, wenn die Falzleiste im Bereich der Führungsfläche liegt. Das Schließen des Gehäuses wird somit wesentlich erleichtert.The basic idea of the invention is that a guide surface is additionally provided for the undercut locking surface of the fold. When two half-shells are pressed together, the lower inner edge of the rebate strip first hits the inclined guide surface of the groove on the other half-shell and slides along it. A gradual, elastic widening of the fold bar takes place. During the transition from the guide to the locking surface, the folding strip snaps into the locking surface due to its elastic behavior and holds both half-shells together. The circumferential guide surface causes the half-shells to be centered with one another in this process. As a result, the half-shells no longer need to lie exactly one above the other when assembling the housing; it is sufficient if the fold bar lies in the area of the guide surface. Closing the housing is thus made considerably easier.

Die erfindungsgemäße Ausführung der Falzverbindung gewährleistet außerdem, daß auch bei mehrmaligem Schließen und Öffnen der Schale, wie es im Falle von Reparaturen- oder Revisionsarbeiten erforderlich ist, die Falzverbindung nicht durch übermäßige Biegung des Materials überstrapaziert wird.The design of the fold connection according to the invention also ensures that, even if the shell is closed and opened several times, as is necessary in the case of repair or revision work, the fold connection is not overused by excessive bending of the material.

Ein weiterer Vorteil ist, daß sich durch die Kombination aus Verriegelungs- und Führungsfläche in der Fuge kein durchgehender Spalt bilden kann. Wenigstens eine der beiden Flächen liegt an ihrer entsprechenden Gegenfläche der anderen Halbschale an. Die Gefahr einer Wärmebrücke in der Stoßfuge ist somit beseitigt.Another advantage is that the combination of locking and guide surface in the joint can not form a continuous gap. At least one of the two Surfaces lie on their corresponding counter surface of the other half shell. The risk of a thermal bridge in the butt joint is thus eliminated.

Außerdem werden durch diese Ausbildung der Falzverbindung herstellungsbedingte Toleranzen, bedingt durch das Schrumpfmaß, ausgeglichen.In addition, this design of the rebate connection compensates for tolerances caused by production, due to the shrinkage dimension.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
eine Schrägansicht eines zur Wärmedämmung von Rohrleitungen verwendeten Gehäuses,
Fig. 2
einen Querschnitt durch eine dünnwandige Ausführungsform eines erfindungsgemäßen Gehäuses,
Fig. 3
als Detail III einen Querschnitt durch eine erfindungsgemäße Falzverbindung in größerem Maßstab und die
Fig. 4 bis 7
Querschnitte weiterer Ausführungsformen der Falzverbindung.
The invention is explained below with reference to an embodiment shown in the drawing. Show it
Fig. 1
an oblique view of a housing used for thermal insulation of pipes,
Fig. 2
3 shows a cross section through a thin-walled embodiment of a housing according to the invention,
Fig. 3
as detail III a cross section through a folded connection according to the invention on a larger scale and the
4 to 7
Cross sections of further embodiments of the fold connection.

Fig. 1 zeigt die Erfindung bei der Verwendung als Wärmedämmung für Rohrleitungen. Es sind zwei Rohrleitungen 1, 1' dargestellt, in denen ein Wärme- oder Kälteträgermedium zirkuliert. Zur Vermeidung von Energieverlusten infolge Wärme- bzw. Kälteabgabe an die Umgebung sind die beiden Rohrleitungen 1, 1' in ein Gehäuse 2 aus wärmedämmendem Material eingebettet. Als wärmedämmendes Material eignet sich besonders expandiertes Polypropylen (EPP); es sind aber auch expandiertes Polyäthylen (EPE), Polystyrol (EPS) oder ähnliches denkbar. Wichtige Materialeigenschaften sind dabei neben dem Wärmedämmvermögen die Festigkeit, welche die in der Verbindungsfuge übertragbaren Kräfte bestimmt, sowie die Elastizität, die Voraussetzung für eine selbständige Verriegelung ist.Fig. 1 shows the invention when used as thermal insulation for pipelines. Two pipes 1, 1 'are shown, in which a heat or coolant medium circulates. In order to avoid energy losses due to the emission of heat or cold to the surroundings, the two pipes 1, 1 'are embedded in a housing 2 made of heat-insulating material. Expanded polypropylene (EPP) is particularly suitable as a heat-insulating material; however, expanded polyethylene (EPE), polystyrene (EPS) or the like are also conceivable. In addition to the thermal insulation properties, important material properties are the strength, which determines the forces that can be transmitted in the connection joint, and the elasticity, which is a prerequisite for independent locking.

Im dargestellten Ausführungsbeispiel besteht das Gehäuse 2 aus zwei vollwandigen Halbschalen, hier einer Oberschale 3 und einer Unterschale 4, die mit ihrer größeren Fläche aufeinander liegen. Die beiden Halbschalen 3, 4 nehmen je zur Hälfte die Rohrleitungen 1, 1' in eigens dafür vorgesehenen Aussparungen 5, 5' auf. An den Rändern sind die Halbschalen 3, 4 form- und kraftschlüssig über eine in Fig. 3 größer dargestellte Falzverbindung 6 miteinander verbunden.In the illustrated embodiment, the housing 2 consists of two full-walled half-shells, here an upper shell 3 and a lower shell 4, which lie on one another with their larger surface. Half of the two half-shells 3, 4 each hold the pipes 1, 1 'in recesses 5, 5' provided for this purpose. At the edges, the half-shells 3, 4 are connected to one another in a positive and non-positive manner by means of a fold connection 6 shown larger in FIG. 3.

Fig. 2 zeigt eine weitere Ausführungsform eines erfindungsgemäßen Gehäuses. Auch hier besteht das Gehäuse 7 aus einer Oberschale 8 und einer Unterschale 9. Im Gegensatz zu dem unter Fig. 1 beschriebenen Gehäuse 2 sind hier aber die Halbschalen 8, 9 dünnwandig ausgebildet, so daß sie einen Hohlraum 10 umschließen. In diesem Hohlraum 10 kann zum Beispiel eine einbaufertige Baugruppe einer Heizungsanlage angeordnet sein. An ihrer gemeinsamen Kontaktfläche sind die Oberschale 8 und die Unterschale 9 mittels einer erfindungsgemäßen Falzausbildung 11 form- und kraftschlüssig miteinander verbunden.2 shows a further embodiment of a housing according to the invention. Here, too, the housing 7 consists of an upper shell 8 and a lower shell 9. In contrast to the housing 2 described in FIG. 1, the half-shells 8, 9 are thin-walled here, so that they enclose a cavity 10. For example, a ready-to-install assembly of a heating system can be arranged in this cavity 10. At their common contact surface, the upper shell 8 and the lower shell 9 are connected to one another in a positive and non-positive manner by means of a fold formation 11 according to the invention.

Fig. 3 zeigt das Detail III aus Fig. 2, die Verbindungsstelle zwischen der Oberschale 8 und der Unterschale 9 in größerem Maßstab. An der gemeinsamen Berührungsfläche der beiden Halbschalen 8, 9 weist die Unterschale 9 eine Nutleiste 12 und die Oberschale 8 eine dazu korrespondierende Falzleiste 13 auf. Die mit der Falzleiste 13 zusammenwirkende Flanke 14 der Nutleiste 12 der Unterschale 9 besteht in ihrem Fußbereich aus einer unter dem Winkel Beta zur Lotrechten 15 zur Falzleiste 13 hin geneigten Verriegelungsfläche 16 und einer daran anschließenden entgegengesetzt und unter dem Winkel Alpha zur Lotrechten 15 geneigten Führungsfläche 17. Das Größenverhältnis von Verriegelungsfläche 16 und Führungsfläche 17 kann je nach Verwendungszweck variieren; im dargestellten Beispiel sind beide Flächen 16 und 17 sowie beide Winkel Alpha und Beta jeweils gleich groß. Spielt das Haltevermögen der Verbindung eine untergeordnete Rolle und legt man großen Wert auf einfaches und problemloses Schließen des Gehäuses 7, so kann bei gleichbleibender Höhe h des Falzes durch die Wahl eines kleineren Neigungswinkels Alpha die Führungsfläche 17 auf Kosten der Verriegelungsfläche 16 vergrößert werden. Entsprechendes gilt für den umgekehrten Fall.FIG. 3 shows the detail III from FIG. 2, the connection point between the upper shell 8 and the lower shell 9 on a larger scale. At the common contact surface of the two half-shells 8, 9, the lower shell 9 has a groove strip 12 and the upper shell 8 has a corresponding folding strip 13. The flank 14 of the groove strip 12 which interacts with the folded strip 13 the lower shell 9 consists in its foot area of a locking surface 16 inclined at an angle beta to the perpendicular 15 to the folding ledge 13 and an adjoining opposite and inclined guide surface 17 at an angle alpha to the vertical 15. The size ratio of the locking surface 16 and the guide surface 17 can vary vary according to purpose; in the example shown, both surfaces 16 and 17 and both angles alpha and beta are each of the same size. If the holding capacity of the connection plays a subordinate role and great importance is attached to simple and problem-free closing of the housing 7, the guide surface 17 can be enlarged at the expense of the locking surface 16 while the height h of the fold remains the same by selecting a smaller angle of inclination alpha. The same applies to the reverse case.

Die Falzleiste 13 der Oberschale 8 ist in Form und Größe der Nutleiste 12 entsprechend ausgebildet. Die Breite b der Falzleiste 13 an der engsten Stelle und deren Höhe h sind ebenso wie die Neigungswinkel Alpha und Beta der Führungs- und Verriegelungsebene 16, 17 und der dadurch bedingte Abstand a der Falzränder so dimensioniert, daß in Abhängigkeit von der Elastizität und den Rückstellkräften des verwendeten Materials ein Schnappeffekt erzielbar ist, ohne daß dabei das Material bei öfterem Schließen und Öffnen des Gehäuses 7 ermüdet. Die untere Ecke 18 der Falzleiste 13 ist zweckmäßig etwas abgerundet ausgebildet.The fold bar 13 of the upper shell 8 is designed in the shape and size of the groove bar 12 accordingly. The width b of the fold bar 13 at the narrowest point and its height h are dimensioned in the same way as the inclination angles alpha and beta of the guide and locking plane 16, 17 and the resulting distance a of the fold edges so that they are dependent on the elasticity and the restoring forces a snap effect of the material used can be achieved without the material tiring when the housing 7 is closed and opened frequently. The lower corner 18 of the folding strip 13 is advantageously somewhat rounded.

Eine zur Fig. 3 alternative Ausführungsform der Falzverbindung ist in Fig. 4 dargestellt. Hier ist die mit der Falzleiste 19 zusammenwirkende Flanke 21 der Nutleiste 20 konvex ausgebildet, so daß die obere Hälfte der Flanke 21 die Führungsfläche 22 darstellt und der sich daran anschließende untere Bereich die Verriegelungsfläche 23. Die Wirkungsweise dieser Verbindung entspricht der in Fig. 3 vorgestellten Ausführungsform, so daß auch hier die Abmessungen des Falzes so auf die Materialeigenschaften abzustimmen sind, daß die beim Schließen und Öffnen auftretenden Verformungen im elastischen Bereich bleiben.An alternative to FIG. 3 embodiment of the fold connection is shown in FIG. 4. Here, the flank 21 of the groove strip 20 which cooperates with the folded strip 19 is convex, so that the upper half of the flank 21 represents the guide surface 22 and the adjoining lower region the locking surface 23 The way this connection works corresponds to the embodiment shown in FIG. 3, so that here too the dimensions of the fold have to be matched to the material properties in such a way that the deformations that occur when closing and opening remain in the elastic range.

Ist zu erwarten, daß die Verbundkräfte zwischen Oberschale 8 und Unterschale 9 nicht ausreichen, so können zu deren Erhöhung die in den Fig. 3 und 4 vorgestellten Falzverbindungen auch symmetrisch ausgebildet sein. Dabei verdoppelt sich die für die Verbundwirkung maßgebende Verriegelungsfläche 24. Fig. 5 zeigt eine solche Ausführungsform.If it is to be expected that the bond forces between the upper shell 8 and the lower shell 9 are not sufficient, the fold connections shown in FIGS. 3 and 4 can also be formed symmetrically to increase them. The locking surface 24, which is decisive for the composite effect, is doubled. FIG. 5 shows such an embodiment.

Durch die modifizierte schwalbenschwanzförmige Ausbildung von Nut und Falzleiste 25 gleitet beim Zusammendrücken der Halbschalen 8 und 9 die Falzleiste 25 entlang der Führungsflächen 26. Dabei werden die beiden spitzen Enden der schwalbenschwanzförmigen Falzleiste 25 zum Teil elastisch gestaucht und zum Teil umgebogen, bis sie die engste Stelle der ebenfalls schwalbenschwanzförmigen Nut passiert haben; erst dann ist ein Einschnappen in die Verriegelungsflächen 24 infolge der Rückstellkräfte des Materials möglich. Eine solche Verbindung beansprucht in Fugenrichtung natürlich mehr Platz als die einfache Ausbildung, vermeidet aber eine beim Einrasten eventuell auftretende Verformung der Schalen 8 und 9. Aus diesem Grund eignet sie sich besonders für Gehäusearten wie z.B. in Fig. 1 beschrieben.Due to the modified dovetail-shaped design of groove and rebate strip 25, when the half-shells 8 and 9 are pressed together, the rebate strip 25 slides along the guide surfaces 26. The two pointed ends of the dovetail-shaped strip 25 are partly elastically compressed and partly bent over until they are the narrowest point who have also passed dovetail-shaped groove; only then is it possible to snap into the locking surfaces 24 as a result of the restoring forces of the material. Such a connection naturally takes up more space in the direction of the joint than the simple design, but avoids any deformation of the shells 8 and 9 that may occur when it snaps into place. For this reason, it is particularly suitable for housing types such as e.g. described in Fig. 1.

Bei den vorgestellten Beispielen greifen zur Verzahnung der Flächen die Nut und die Falzleiste nach dem Prinzip von Patrize und Matrize ineinander, wobei die erhabenen Stellen in der Flankenfläche der Nut auftreten. Genauso denkbar sind Falzverbindungen, deren Erhebungen in der Falzleiste angeordnet sind und in Vertiefungen der Nut greifen und so zur Verriegelung der Halbschalen führen. Beispiele für solche Gestaltungen sind in den Fig. 6 und 7 angedeutet. Dabei entspricht Fig. 7 in der Wirkungsweise derjenigen nach Fig. 4 und Fig. 6 derjenigen nach Fig. 5.In the examples presented, the groove and the rebate strip interlock according to the principle of male and female for interlocking the surfaces, the raised points occurring in the side surface of the groove. Folded connections are also conceivable, their elevations in the fold bar are arranged and engage in recesses of the groove and thus lead to the locking of the half-shells. Examples of such designs are indicated in FIGS. 6 and 7. 7 corresponds in its mode of operation to that according to FIG. 4 and FIG. 6 to that according to FIG. 5.

Claims (6)

Gehäuse (1, 7) zur Aufnahme einzelner Komponenten einer Wärme- oder Kälteversorgungsanlage, wie z.B. Rohrabschnitte oder mit Rohrabschnitten zu einer einbaufertigen Baugruppe zusammengefaßte Aggregate, bestehend aus mindestens zwei, die Komponenten zwischen sich einschließenden Schalen (3, 4 bzw. 8, 9) aus wärmedämmendem Kunststoff, die an ihren einander zugewandten Rändern zur formschlüssigen Verbindung der Schalen in der Kontaktebene mit einer Falzverbindung (6 bzw. 11) aus einer Falzleiste (13) und einer dieser in Form und Größe entsprechenden Nutleiste (12) versehen sind, dadurch gekennzeichnet, daß die mit der Falzleiste (13) zusammenwirkende Flanke (14) der Nutleiste (12) einer Schale (9) in eine obere, unter dem Winkel Alpha zur Lotrechten gegen die Falzleiste (13) geneigte Teilfläche (17) und eine untere, unter dem Winkel Beta zur Lotrechten geneigte Teilfläche (16) aufgeteilt ist, wobei die Winkel Alpha und Beta entgegengesetzten Drehsinn besitzen, und daß die Falzleiste der zweiten Schale (8) dazu korrespondierende Flächen aufweist.Housing (1, 7) for receiving individual components of a heating or cooling supply system, such as Pipe sections or assemblies combined with pipe sections to form a ready-to-install assembly, consisting of at least two shells (3, 4 or 8, 9) made of heat-insulating plastic, the components between them, which on their mutually facing edges for the positive connection of the shells in the contact plane are provided with a rabbet connection (6 or 11) comprising a rabbet (13) and a slot (12) corresponding in shape and size, characterized in that the flank (14) of the slot (12) cooperating with the rabbet (13) ) a shell (9) is divided into an upper partial surface (17) inclined at an angle alpha to the vertical against the fold bar (13) and a lower partial surface (16) inclined at an angle beta to the vertical, the angles alpha and Beta have opposite direction of rotation, and that the fold bar of the second shell (8) has corresponding surfaces. Gehäuse nach Anspruch 1, dadurch gekennzeichnet, daß die Winkel Alpha und Beta gleich groß sind.Housing according to claim 1, characterized in that the angles alpha and beta are equal. Gehäuse nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die obere Teilfläche (17) als Führungsfläche und die untere Teilfläche (16) als Verriegelungsfläche dienen.Housing according to Claim 1 or 2, characterized in that the upper partial surface (17) serves as a guide surface and the lower partial surface (16) serves as a locking surface. Gehäuse nach Anspruch 3, dadurch gekennzeichnet, daß die Führungsfläche (17) und die Verriegelungsfläche (16) ebene Flächen sind.Housing according to claim 3, characterized in that the guide surface (17) and the locking surface (16) are flat surfaces. Gehäuse nach Anspruch 3, dadurch gekennzeichnet, daß die Führungsfläche (20) und die Verriegelungsfläche (21) gekrümmte Flächen sind.Housing according to claim 3, characterized in that the guide surface (20) and the locking surface (21) are curved surfaces. Gehäuse nach Anspruch 5, dadurch gekennzeichnet, daß die Führungsfläche (20) und die Verriegelungsfläche (21) gleiche Krümmung aufweisen und stetig ineinander übergehen.Housing according to claim 5, characterized in that the guide surface (20) and the locking surface (21) have the same curvature and continuously merge.
EP97100828A 1996-01-29 1997-01-21 Housing for receiving individual components of a cooling or heating supply installation Expired - Lifetime EP0786620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29601458U DE29601458U1 (en) 1996-01-29 1996-01-29 Housing for holding individual components of a heating or cooling supply system
DE29601458U 1996-01-29

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EP0786620A1 true EP0786620A1 (en) 1997-07-30
EP0786620B1 EP0786620B1 (en) 1999-05-26

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EP97100828A Expired - Lifetime EP0786620B1 (en) 1996-01-29 1997-01-21 Housing for receiving individual components of a cooling or heating supply installation

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US (1) US5875821A (en)
EP (1) EP0786620B1 (en)
AT (1) ATE180555T1 (en)
CA (1) CA2195840C (en)
DE (2) DE29601458U1 (en)
DK (1) DK0786620T3 (en)
ES (1) ES2134033T3 (en)

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Also Published As

Publication number Publication date
DK0786620T3 (en) 1999-12-06
US5875821A (en) 1999-03-02
DE59700167D1 (en) 1999-07-01
DE29601458U1 (en) 1996-03-14
EP0786620B1 (en) 1999-05-26
CA2195840A1 (en) 1997-07-30
ES2134033T3 (en) 1999-09-16
ATE180555T1 (en) 1999-06-15
CA2195840C (en) 2002-06-11

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