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Heat exchange deviceHeat exchange device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090101322, Heat exchange device. Brief Patent Description - Full Patent Description - Patent Application Claims
The invention relates to a heat exchange device having a plate element which has a shaped part which extends over a heat exchange surface. In mechanical devices, for example, machine tools, heat loss from drives and highly loaded bearings as well as process-generated heat sources cause temperature elevations in regions in bearing parts if no measures to dissipate heat are taken. For high-precision machines, the deformation which is caused by heating up of components adversely affects the dimensional stability of the workpiece in a profound way. Providing cooling as a countermeasure is often extremely difficult or cannot be carried out since structural circumstances preclude the integration of cooling means such as holes or channels for a flowing heat transfer medium. Such holes of channels result not only in an adverse etfect on the bearing capacity of highly loaded components, but also result in greater cost of the mechanical device. With respect to the aforementioned, the object of the invention is to make available a heat exchange device which is characterized by simple construction, and yet enabling dedicated heat transfer at designated locations, as near as possible to the heat generating site or to a transition site to a thermally sensitive assembly. This object is achieved according to the invention by a heat exchange device which has the features of claim 1 in its entirety. Accordingly, the invention calls for a plate element in the form of a flexible cooling collar (or analogously a heating collar, to which reference is made below), which conforms to the machine parts to be cooled (or heated) and which due to flexible conformation forms a large contact surface for heat transfer. In this way in-situ cooling is also enabled on components into which internal cooling systems cannot be integrated. In addition, one special advantage is that the device according to the invention can also be added later. The device according to the invention can be of modular design and can be flexibly made larger or smaller by attaching the desired number of plate elements or collars and connecting them among one another, wherein the connection can be made as a parallel or series connection. In advantageous embodiments the shaped part can be formed from an elastomer, preferably from nitrile rubber NBR. A shaped part such as this on the one hand has the desired flexibility and on the other hand is resistant to conventional heat transfer media, for example, to water-glycol and water with anticorrosion agents. Moreover, there is resistance to other fluids, such as oil, which can be found in the vicinity of mechanical systems. The bottom-side web which tightly seals the cavity for the heat transfer medium against the shaped part and which forms the contact surface for heat exchange is formed by a film which has been made thin compared to the wall thickness of the shaped part, preferably likewise from nitrile rubber NBR. The retaining plate which rests on the top of the shaped part, in order to apply a compressive force to the latter to press the plate element against the pertinent body, is preferably formed by a thin metal plate. Its thickness can be chosen such that it enables, by hand, the adaptation of the plate element to the geometry of the body to be cooled, but at the same time has a thickness such that it can transfer the necessary contact forces. The arrangement can be made such that the heat exchange surface has a rectangular outline which is rounded on the corner regions, the retaining plate extending superficially over the entire heat exchange surface while exposing openings in the access regions for supply and discharge of the heat transfer medium. The collar thus has the shape of a closed, flat plate which is planar in the undeformed state, the planar surface on the top being interrupted only by access openings for supply and delivery of the heat transfer medium. In advantageous embodiments the shaped part forms a plate with a planar sealing edge which extends continuously along the outside edge of the heat exchange surface and to which the bottom-side web is attached with the formation of a seal, preferably by cementing, the plate in the region within the sealing edge running offset away from the bottom-side web in order to form the inner cavity between the plate and the bottom-side web. In this way the space for the heat transfer medium extends over the entire surface region of the plate, aside from the outer sealing edge, so that advantageously heat transfer can accordingly take place effectively over a large area. In especially advantageous embodiments, on the side of the plate facing the bottom-side web, there are burls projecting into the cavity as spacers between the bottom-side web and the plate and for producing turbulence of the flow of the heat transfer medium. The burls, which can be made in one piece in a large number on the shaped part, keep the film provided on the bottom-side web not only at a defined distance from the opposite wall of the cavity, but due to the generation of turbulence also provide for good mixing of the heat transfer medium flowing into the cavity and thus likewise contribute to an increase of efficiency. Preferably the arrangement is such that the plate has a connecting branch molded to the top for supply and discharge of heat medium into and out of the cavity, the connecting branch penetrating the access openings which are made in the retaining plate which adjoins on the top. In this way there are simple connection possibilities for the lines which run on the outside of the pertinent body which is to be cooled, and connections between several plate elements can be formed without difficulty. Preferably the plate which forms the shaped part on its top in the central region above the cavity forms a planar contact surface for the retaining plate, on the sealing edge which extends along the outside of the heat exchange surface at least one bead being formed which projects on the top and which extends peripherally along the edge region in order to cause an increase of the contact forces which are applied by the retaining plate and which act on the sealing edge. The invention is detailed below using the drawings: Continue reading about Heat exchange device... Full patent description for Heat exchange device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Heat exchange device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Heat exchange device or other areas of interest. ### Previous Patent Application: Heat exchanger Next Patent Application: Copper alloy tube for heat exchanger excellent in fracture strength Industry Class: Heat exchange ### FreshPatents.com Support Thank you for viewing the Heat exchange device patent info. 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