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  Air heat exchangerRelated Patent Categories: Heat Exchange, Flow Passages For Two Confined Fluids, Interdigitated Plural First And Plural Second Fluid PassagesThe Patent Description & Claims data below is from USPTO Patent Application 20060237180. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims priority to German Patent Application Serial No. 10 2005 018 050.7 filed Apr. 19, 2005, which is hereby incorporated by reference in its entirety for all purposes. FIELD [0002] The present disclosure relates to an air heat exchanger in air diffuser systems with flexible planar heat exchanger elements, in particular for use in aircraft. BACKGROUND AND SUMMARY [0003] For heating the air, heaters are incorporated in air diffuser systems. For safety reasons, heating elements with high surface temperatures are undesirable in the aircraft industry. Therefore, so-called panel heating elements are being used. Due to their large surface area, the same are capable of transferring a high thermal power despite low temperatures. The objective is to install a rather large surface area on a small space, in order to be able to transfer as much heat as possible. Output of the thermal power should be effected in a controlled way, and inadmissible excess temperatures should be avoided. This is ensured by the use of sensors and fuses. Therefore, the elements should be producible at low cost and should achieve a rather high performance with a low weight and a small size. [0004] Air heaters with a structure as shown in the attached FIG. 1 are known already. In an air-conducting tube 12 to be heated, flexible panel heating elements 10 are inserted, which in the illustrated embodiment are arranged parallel to each other. In this case, the panel heating elements constitute free-standing plates. As an alternative to the illustrated embodiment, the panel heating elements can also consist of coaxially arranged tubes. There can also be provided heat-dissipating cooling bodies, for instance in the form of heat exchanger lamellae. [0005] These prior art systems involve a very high contacting effort, as the individual panel heating elements must be connected with each other via soldering points, plug-in connections and the like. As a result, the risk of defects is substantially increased during the manufacture of such elements. In particular the manufacture of coaxial panel heating elements involves a substantially higher mounting effort as compared to plate-shaped elements. [0006] It is the object of the present disclosure to create an air heat exchanger which is comparatively easier to manufacture and to install. [0007] In accordance with the present disclosure, this object is solved by an air heat exchanger in an air diffuser system comprising flexible planar heat exchanger elements, in particular for use in aircraft, wherein the individual planar heat exchanger elements are connected with each other by means of webs. [0008] In one example, these webs themselves are unheated. Inside these webs, conductors are disposed, which connect the individual heat exchanger conductors in the individual surfaces with each other. The webs only serve the mechanical connection of the planar heat exchanger elements. The corresponding conductors usually, but not necessarily, are electric conductors. [0009] Accordingly, the planar heat exchanger elements can have a variable design in terms of shape, size and heat exchanger performance. Thus, they can result in a much better utilization of the flow cross-section of the air-conducting conduit. In certain portions of round tubes, for instance, flow can be greater, so that they can provide a greater heat exchanger performance. [0010] To effect a uniform surface temperature of the flexible heat exchanger elements in the direction of the traversed length, the same can also be equipped with a variable power density along their length. With a specified maximum temperature, which should not be exceeded, a uniform temperature can thus be adjusted along the length of the tube. [0011] Particularly advantageously, additional heat exchanging bodies are provided, for instance plates and/or ribs. The additional heat exchanging bodies can be used both as supports and as spacers for the planar heat exchanger elements. [0012] The above-mentioned object of the present disclosure is solved in particular by a method wherein, the planar heat exchanger elements are manufactured together with the webs connecting the same as an integral element. [0013] Accordingly, the sensors or other fuses for monitoring the temperature as well as connecting lines leading to the same can be integrated right during the manufacturing process of the planar heat exchanger elements and the webs connecting the same. [0014] Upon manufacture of the planar heat exchanger elements and the webs of each element, the same is bent into its final shape. As far as the heat exchanger element is incorporated in a pipe conduit, the same will afterwards be inserted into the pipe conduit. In accordance with the herein disclosed aspect of the air heat exchanger, it is no longer necessary to connect each individual planar heat exchanger element separately. Rather, it is sufficient to connect the entire planar heat exchanger element to the heat exchanger fluid conduit. [0015] Particularly advantageously, the aforementioned air heat exchanger is used as an air heater, preferably for use in aircraft. [0016] Further details, features and advantages of the present disclosure will be illustrated with reference to an embodiment shown in the figures. BRIEF DESCRIPTION OF THE FIGURES [0017] FIG. 1 shows a partly sectioned air heat exchanger in accordance with the prior art; and [0018] FIG. 2 shows several views of a part of an air heat exchanger in various structural conditions in accordance with the present invention. DETAILED DESCRIPTION [0019] In FIGS. 2a to 2c, the various manufacturing steps of an air heat exchanger 20 are shown. The same first of all consists of a number of planar heat exchanger elements 10, which are each connected with each other by means of webs 14. The webs 14 substantially have the same structure as the heat exchanger elements 10, which in the present embodiment constitute panel heating elements. Instead of corresponding panel heating elements, the same can of course also constitute panel cooling elements when used in an air conditioning system. Continue reading... Full patent description for Air heat exchanger Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Air heat exchanger 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 Air heat exchanger or other areas of interest. ### Previous Patent Application: Reduced vibration tube bundle device Next Patent Application: Multi-channel temperature control system for semiconductor processing facilities Industry Class: Heat exchange ### FreshPatents.com Support Thank you for viewing the Air heat exchanger patent info. IP-related news and info Results in 0.06415 seconds Other interesting Feshpatents.com categories: Computers: Graphics , I/O , Processors , Dyn. Storage , Static Storage , Printers |
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