US 11,719,257 B2
Thin layered heating element for a fluid pump
Jürgen Winkler, Seeham (AT)
Assigned to Sanhua Aweco Appliance Systems GmbH, Neukirich (DE)
Filed by Sanhua Aweco Appliance Systems GmbH, Neukirch (DE)
Filed on Aug. 22, 2018, as Appl. No. 16/108,649.
Claims priority of application No. 17188041 (EP), filed on Aug. 25, 2017.
Prior Publication US 2019/0063462 A1, Feb. 28, 2019
Int. Cl. F04D 29/58 (2006.01); F04D 29/02 (2006.01); F04D 29/42 (2006.01); H05B 3/42 (2006.01); A47L 15/42 (2006.01)
CPC F04D 29/586 (2013.01) [A47L 15/4285 (2013.01); F04D 29/026 (2013.01); F04D 29/426 (2013.01); F04D 29/4293 (2013.01); F04D 29/588 (2013.01); H05B 3/42 (2013.01); F05D 2300/2102 (2013.01); F05D 2300/2106 (2013.01); H05B 2203/013 (2013.01); H05B 2203/021 (2013.01); H05B 2203/022 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A fluid pump comprising:
a fluid pump casing having a cylindrical body portion;
a pump chamber inside the fluid pump casing and defined by an outer wall, a bottom part, a top part, an inlet, and an outlet;
a heat reflector made of metal and located on an inner wall of the cylindrical body portion of the fluid pump casing, the heat reflector protecting the fluid pump casing;
a heating element comprising:
a substrate made of an insulative material and comprising a first axial end and a second axial end, wherein the substrate has a cylindrical shape and forms the outer wall of the pump chamber;
a thin layer of monocrystalline, polycrystalline, or amorphous material on the substrate; and
electrical contacts being in contact with the thin layer,
wherein the thin layer has a thickness equal to or smaller than 10 μm, and
wherein at least the first axial end or the second axial end of the substrate comprises a region that remains uncovered by the thin layer and configured for coupling to another device,
wherein the thin layer faces, in a radial direction, the heat reflector,
wherein the heating element forms at least a portion of the outer wall of the pump chamber, and
wherein the fluid pump further comprises at least one control and safety unit on a contact layer, and the contact layer is on the region that remains uncovered by the thin layer.