TH26487B - Improved dip heating element With skeleton-shaped supports And selectable heat transfer fins - Google Patents

Abstract

DC60 Various electric resistance heating element, water heater containing Such components, and methods for preparing such components. With various electrical resistances Of this invention It is composed of a skeletal support frame (70) with one support surface on it. The resistance wire (66) is wound on the subsurface. And that's right It is then connected to at least one pair of terminal blocks (12, 16), support frame (70) and resistance wire (66), and then completely sealed. It is also electrically insulated inside a thermally conductive polymer coating (30, 64). The skeletal support frame (70) of this invention improves the injection molding operation. For the encapsulation of the resistance wire (66), and heat transfer fins (62) can be incorporated to improve the thermal conductivity. Various electric resistance heating elements, water heaters containing Such components, and methods for preparing such components. With various electrical resistances Of this invention It is composed of a skeletal support frame (70) with one support surface on it. The resistance wire (66) is wound on the subsurface. And that's right It is then connected to at least one pair of terminal blocks (12, 16), support frame (70) and resistance wire (66), and then completely sealed. It is electrically oriented inside the thermal water polymer coating (30, 64). The skeletal support frame (70) of this invention improves the operation of injection molding. For the encapsulation of the resistance wire (66), and heat transfer fins (62) can be incorporated to improve the thermal conductivity.

Claims (3)

1.Method of manufacture of electric resistance heating elements It consists of (a) arrangement of a support structure (70) with a number of openings through it and a support surface on it (b) an arrangement of resistance heating wires (66) on Such a support surface; And (c) casting of thermally conductive polymer material (30) over the aforementioned resistance heating wire (66) and the main part of the supporting structure (70) for electrical insulation. And wrap Fully enclosed, the wires are heated with such resistance (66) and the main part of the secondary structure, the aforementioned thermally conductive polymer material (30), contacts the heating wire with resistance. Such resistance, when the resistivity component (100) is the electrical resistance component for the To heat the fluid, the supporting structure is a skeletal support frame consisting of a number of longitudinal ribs (69), and the aforementioned wire and the main part of the support is wrapped. Covering from fluid, where step (a) is assembled by injection molding, skeleton support frame. And procedures (c) include injecting the said thermally conductive polymer material to And at least 90% of the skeletal support frame by The remainder of the unsheathed skeletal support consists of a number of heat transfer fins (62). 2. Method of claim No. 1 where a number of such longitudinal structures (69) contain a number of grooves for receiving such wire. 3. Method of claim 1, whereby the aforementioned skeletal support frame (70) and the aforementioned thermally conductive polymer materials are included. The same thermoplastic resin