Surface heater structure, especially for vehicles

• US 4,503,906 A
• Filed: 11/04/1982
• Issued: 03/12/1985
• Est. Priority Date: 11/06/1981
• Status: Expired due to Fees

• Current Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Inventors: Grantz, Helmut, Odebrecht, Wolfgang, Andres, Rudolf, Munzel, Wolf-Dietrich
• Primary Examiner(s): DAVIS JR, ALBERT
• Application Number:
  US06/439,184
• Time in Patent Office: 859 Days
• Field of Search: 165/104.21, 165/104.14, 165/140, 62/333, 62/516, 62/519, 62/523, 29/157.3 V, 219/326, 219/341, 219/378
• US Class Current: 165/104.21
• CPC Class Codes: F28D 1/0226 with an intermediate heat-transfer medium, e.g. thermosiphon radiators
• CPC Class Codes: F28D 15/0233 the conduits having a particular shape, e.g. non-circular cross-section, annular F28D15/0241, F28D15/0266 take precedence
• CPC Class Codes: F28F 3/14 by separating portions of a pair of joined sheets to form channels, e.g. by inflation manufacture thereof B23P
• CPC Class Codes: Y10T 29/49366 Sheet joined to sheet

Abstract

A surface heater body which is constructed as two-layer, expanded partial composite laminated body and contains two mutually separated channels or channel systems adjoining one another wall-to-wall in a heat-conducting manner; one channel system which extends over the entire area of the surface heater body and which is hermetically closed off, operates as heat-pipe to distribute the supplied heat over a large area; a heat channel traversed by heating water extends along the bottom edge of the surface heater body; a rectilinear continuous non-expanded strip is provided between the heat channel and the heat-pipe channel system, along which the partial composite laminated body is bent U-shaped so that the heat channel and the heat-pipe channel system come into mutual abutment where they are permanently and heat-conductingly connected with each other over the entire contact surface; a separate pipe may also be provided as heat channel or, as a still further alternative, a heat-pipe may be inserted into the heat-pipe channel system whereby the two edges of the surface heater body are sealed off at the places where the heat pipe leaves the heater element.

Claims

1. A surface heater structure which is constructed as expanded partial composite laminated body means and which contains two mutually separated channel means, adjoining one another wall-to-wall in a heat-conducting manner, of which one channel means that is hermetically closed and extends over substantially the entire surface of the surface heater body means forming a heat-pipe channel system, is constructed and operates as heat-pipe means, and of which another channel means extending along the lower side of the surface heater body means which forms a heat channel, is adapted to be traversed by heating water, characterized in that the partial composite laminated body means is constructed as two-layer body and includes a substantially rectilinear continuous non-expanded strip means between the heat channel and the heat-pipe channel system, said body means being bent U-shaped along this strip for mutual abutment of the heat channel and of the heat-pipe channel system, and in that the mutually abutting wall parts thereof are heat-conductingly connected with each other over substantially the entire contact area.

2. A surface heater structure according to claim 1, characterized in that the mutually abutting wall parts are brazed to each other.

3. A surface heater structure according to claim 1, characterized in that the mutually abutting wall parts are bonded with each other in a heat-conducting manner.