DE202010003402U1 - Component with a housing and a window element - Google Patents

Abstract

Component (1), comprising a housing (1.2) and a window element (1.1) hermetically sealed therein, characterized in that an inorganic, glass-like and UV radiation-resistant intermediate material ( 1.3) is introduced, which integrally connects the housing (1.2) and the window element (1.1).

Description

The invention relates to a component comprising a housing and a hermetically sealed in this window element.

From the prior art components are generally known, which are formed from a housing and a introduced therein or arranged on this window element. The housing is formed in particular of metal and the window element of transparent materials such as glass, plastic calcium or magnesium fluoride. Such components are used, for example, as so-called visual and / or measuring windows, in particular in ovens, motors, gas turbines and radiation detectors.

In particular, in the application of the components in radiation detectors, as used for example in drinking water treatment for monitoring so-called UV lamps in water disinfection reactors, it is necessary that the window element is hermetically sealed to the housing. This tightness is achieved, for example, by pressing and / or bonding the disk element to the housing, wherein a sealing element can be arranged between the disk element and the housing.

The disadvantage, however, is that the bonds and / or sealing elements lose their sealing effect with prolonged influence of the ultraviolet radiation (= UV radiation) due to embrittlement and shrinkage, so that the components have only a short life.

Furthermore, it is known from the prior art that the disc elements are soldered to the housing. This is for example in the DE 10 2005 024 512 B3 described, according to which a window element is a hermetically sealed in a housing window element. In this case, an optically permeable, flat carrier material, the size of which is sufficient for a large number of window elements, is provided on at least one surface with an optical coating, from which subsequently frame-shaped partial areas, which enclose optically active areas of the window elements, are removed on a coated surface. Furthermore, a metal coating serving for producing a soldered connection with the housing is applied to the coating-free subregions produced, and the window elements are separated from the substrate material. To apply the metal coating, first the remaining optical coating and the coating-free subregions are completely provided with an adhesive layer system that can be etched selectively with respect to the optical coating, and areas with the optical coating are then covered with a lift-off mask before coating with a soldering layer system over the entire surface. This results in the metal coating serving for the production of the solder joint with the housing in the lift-off method, wherein the metal coating serves as a mask for etching the adhesive layer system.

The disadvantage, however, that solder joints generally have low allowable shear stresses. However, high shear stresses form between the metallically formed housing and the window element under the influence of high temperatures and pressures, since the linear expansion coefficients of the metallic housing and the window element are very different. Thus, the device produced disadvantageously has insufficient pressure and temperature resistance.

Therefore, the invention has for its object to provide a comparison with the prior art improved device with an introduced into a housing window element.

The object is achieved with a component having the features specified in claim 1.

Advantageous embodiments of the invention are the subject of the dependent claims.

The device according to the invention comprises a housing and a hermetically sealed in this window element, wherein the window member is disposed in an opening corresponding to the window member within the housing.

According to the invention, an inorganic, glassy and UV radiation-resistant intermediate material is introduced at the edge between the window element and the housing, which connects the housing and the window element to one another in a material-locking manner.

This results in an advantageous manner that the device has a long life even when used with a high UV radiation exposure and the tightness between the window member and the housing is not affected due to the use of uv-radiation-resistant intermediate material. Also, the positive connection is characterized by the use of the inorganic, glassy intermediate material as particularly pressure and temperature resistant, since the intermediate material over the prior art has higher allowable shear stresses. There are in particular Pressure resistance up to 150 bar achievable. Also, a universal application of the device as a measuring and / or viewing window in a variety of areas is possible.

According to a particularly advantageous embodiment of the invention, a surface of the window member and a surface of the housing are arranged flush with each other at least on one outer side. This results in a simple cleaning possibility of the device, which is preferably without disassembly of the device, for example, from a water-disinfecting reactor is possible. It also results from the flush arrangement as an advantage that optical properties of the window element are not affected.

To use the device in such a water disinfection reactor as a viewing or measuring window, the window element is formed of UV-transparent quartz glass, so that a degree of purity of the water to be examined by UV radiation and detection of the same is possible.

Furthermore, the intermediate material and / or the housing are thermally treated. In the manufacture of the component, the intermediate material is introduced between the housing and the window element, wherein the introduction of the intermediate material takes place in particular in molten form. Thus, a high-quality cohesive connection between the housing and the window element is achieved, whereby the pressure resistance and temperature resistance of the device are further increased.

In an advantageous embodiment of the component according to the invention a pressure element is arranged in the intermediate material, which surrounds the window element, preferably peripherally in the region of the intermediate material completely peripherally. In this case, the pressure element is formed in particular of metal. From this arrangement of the pressure element results in a profitable manner that the stability of the connection between the window element and the housing is further increased. This increase follows from the fact that pressing forces are generated on the intermediate material in the direction of the disk element and the housing by the introduction of the pressure element.

In this case, the pressure element is melted into the intermediate material, in particular at high temperature, so that the intermediate material and the pressure element are materially connected to one another. As a result, a permanently stable connection is achieved both between the pressure element and the intermediate material and between the intermediate material and the housing and the window element.

In addition, the housing has areas which are designed to generate a force, material and / or positive connection with another component. These areas are, for example, structures introduced into the housing, such as internal threads or external threads, or areas which are treated in such a way that the component can be connected to other components in these areas by welding, soldering or gluing.

Embodiments of the invention are explained in more detail below with reference to drawings.

Show:

1A schematically a component in a front view,

1B schematically the device according to 1A in a perspective view,

2 schematically a sectional view of a first embodiment of the device according to 1A .

3 schematically a sectional view of a second embodiment of the device according to 1A .

4 schematically a sectional view of a third embodiment of the device according to 1A .

5 schematically an enlarged sectional view of a portion of a fourth embodiment of the device with incorporated pressure element according to 1A , and

6 schematically an enlarged sectional view of a portion of a fifth embodiment of the device according to 1A in the region of an introduced pressure element.

Corresponding parts are provided in all figures with the same reference numerals.

1 shows a component 1 , which is used in particular as a so-called measuring window for monitoring so-called UV lamps in water disinfection reactors in drinking water treatment. In this monitoring it is necessary to monitor a UV irradiance in the irradiation of water with ultraviolet radiation. That's why the device is 1 for receiving system and reference sensors, based on which the UV irradiance is detected, provided.

A radiation entrance opening is through a window element 1.1 formed, which hermetically sealed in a housing 1.2 , in particular a stainless steel housing, is introduced. The window element 1.1 This is made of UV-transparent quartz glass, which is characterized by a high quality.

In 2 is a first embodiment of the device 1 shown, wherein the window element 1.1 hermetically sealed in the housing 1.2 is introduced.

The housing 1.2 has a peripheral web on the edge 1.2.1 on, so that forms an opening which is smaller than the window element 1.1 ,

To generate the hermetically sealed arrangement of the window element 1.1 in the case 1.2 is in the remaining space between the case 1.2 and the window element 1.1 an inorganic, glassy and uv radiation resistant intermediate material 1.3 introduced, which the housing 1.2 and the window element 1.1 cohesively connects with each other.

This will be the window element 1.1 , the case 1.2 and the intermediate material 1.3 initially prepared and arranged according to each other and aligned. Subsequently, the pre-assembled module is treated in a thermal joining and forming process. This melts the intermediate material 1.3 and transforms so that the hermetically sealed and positive connection between the window element 1.1 and the housing 1.2 formed. It is also possible that the transformation of the molten intermediate material 1.3 in addition, by the action of a pressing force, for example by means of a punch occurs. The pressing force can continue until the completion of curing of the intermediate material 1.3 be introduced.

A material thickness and shape of the housing 1.2 is dimensioned such that a resulting during and after the joining and forming process compressive stress, for example, caused by a cooling of the materials is limited.

In 3 is a second embodiment of the device 1 shown. Here is the window element 1.1 such in the case 1.2 introduced that a surface of the window element 1.1 flush with a surface of the housing 1.2 on an outside of the device 1 concludes.

To generate the hermetically sealed arrangement of the window element 1.1 in the case 1.2 is between the case 1.2 and the window element 1.1 the inorganic, glassy and uv radiation resistant intermediate material 1.3 introduced, which the housing 1.2 and the window element 1.1 cohesively connects with each other. The generation of the hermetically sealed arrangement of the window element 1.1 in the case 1.2 again takes place in the thermal joining and forming process

4 shows a third embodiment of the device 1 , Again, the surface of the window element closes 1.1 flush with the surface of the housing 1.2 on an outside of the device 1 from.

The housing 1.2 has a peripheral web on the edge 1.2.1 on, so that one with the window element 1.1 corresponding opening in the housing 1.2 forms. A height of the jetty 1.2.1 is smaller than a thickness of the window member 1.1 ,

In the remaining space between the window element 1.1 and the housing 1.2 below the footbridge 1.2.1 is the inorganic, glassy and uv radiation resistant intermediate material 1.3 introduced, wherein the generation of the hermetically sealed arrangement of the window element 1.1 in the case 1.2 takes place in the thermal joining and forming process.

In 5 is a fourth embodiment of the device 1 shown.

In addition to the in 3 shown second embodiment is in the intermediate material 1.3 a pressure element 1.4 arranged. At the pressure element 1.4 is in the illustrated embodiment, a pressure ring formed of metal, which at high temperatures in the intermediate material 1.3 so melted that the intermediate material 1.3 and the pressure element 1.4 are cohesively connected to each other and that the pressure element 1.4 the window element 1.1 at the edge in the area of the intermediate material 1.3 surrounds completely circumferentially. This is preferably done following the described thermal joining and forming process, so that by the pressure element 1.4 the intermediate material 1.3 is at least partially spread and thus pressing forces in the intermediate material 1.3 in the direction of the housing 1.2 and the disk element 1.1 increase. As a result, the pressure stability of the device 1 further increased and a permanent hermetic tightness and thermal shock resistance are ensured.

6 shows an enlarged sectional view of a fifth embodiment of the device 1 , The illustrated embodiment of the device 1 is different from in 4 illustrated component 1 only by the fact that in addition, designed as a pressure ring pressure element 1.4 , the window element 1.1 Completely surrounding the edge, into the intermediate material 1.3 is introduced, so that the stability of the material connection of the window element 1.1 and the housing 1.2 is further increased.

In a manner not shown, the housing 1.2 in all embodiments of the device 1 Areas which are formed to produce a force, substance and / or positive connection with another component. In the manufacture of the device 1 These areas, in particular non-cutting and / or machining processes, so that, for example, structures, such as threads arise, based on which the component 1 with other components, such as the plant and reference sensors and / or the water disinfection reactor is connectable.

LIST OF REFERENCE NUMBERS

1

module

1.1

element window

1.2

casing

1.2.1

web

1.3

intermediate material

1.4

pressure element

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005024512 B3 [0005]

Claims (9)

Component ( 1 ), comprising a housing ( 1.2 ) and a hermetically sealed in this window element ( 1.1 ), characterized in that at the edge between the window element ( 1.1 ) and the housing ( 1.2 ) an inorganic, glassy and uv radiation resistant intermediate material ( 1.3 ) is introduced, which the housing ( 1.2 ) and the window element ( 1.1 ) connects materially together. Component ( 1 ) according to claim 1, characterized in that a surface of the window element ( 1.1 ) and a surface of the housing ( 1.2 ) are arranged flush with each other at least on one outer side. Component ( 1 ) according to claim 1 or 2, characterized in that the intermediate material ( 1.3 ) and / or the housing ( 1.2 ) are thermally treated. Component ( 1 ) according to one of the preceding claims, characterized in that in the intermediate material ( 1.3 ) a printing element ( 1.4 ) is arranged. Component ( 1 ) according to claim 4, characterized in that the pressure element ( 1.4 ) the window element ( 1.1 ) at the edge in the area of the intermediate material ( 1.3 ) surrounds completely circumferentially. Component ( 1 ) according to claim 4 or 5, characterized in that the pressure element ( 1.4 ) is formed of metal. Component ( 1 ) according to one of claims 4 to 6, characterized in that the intermediate material ( 1.3 ) and the pressure element ( 1.4 ) are cohesively connected to each other. Component ( 1 ) according to one of the preceding claims, characterized in that the window element ( 1.1 ) is formed of UV-transparent quartz glass. Component ( 1 ) according to one of the preceding claims, characterized in that the housing ( 1.2 ) Has areas which are designed to produce a force, substance and / or positive connection with another component.

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