Electrical Heating Device

Patent metadata

Field	Value
Publication number	US-2025056677-A1
Application number	US-202418798967-A
Country	US
Kind code	A1
Filing date	Aug 9, 2024
Priority date	Aug 10, 2023
Publication date	Feb 13, 2025
Grant date	—

Abstract

An electrical heating device comprises two heating chambers between which an electrical heating assembly is formed. Via a distributor a flow of a medium to be heated entering the electrical heating device in the inflow direction is divided into a first partial flow and a second partial flow. The first partial flow flows through the first heating chamber, while the second partial flow flows through the second heating chamber. For this purpose, the distributor has a distributing body, which may be configured as a conical bod that is rotationally symmetrical about an axis of symmetry. The axis of symmetry may be parallel to an inlet axis. Alternatively, the distributing body can also be configured as an overflow edge.

First claim

1 . An electrical heating device for heating a liquid medium, comprising:
a first heating chamber; a second heating chamber; an electrical heating assembly which is provided between the first heating chamber and the second heating chamber and which is coupled to the first heating chamber and the second heating chamber in a heat-conducting manner; and a distributor through which the medium is distributed between the first heating chamber and the second heating chamber, wherein the distributor comprises a distributing body through which the medium introduced into the distributor is divided into a first partial flow which is guided into the first heating chamber and a second partial flow which is guided into the second heating chamber.

2 . The electrical heating device according to claim 1 , wherein an overflow edge is formed as a distributing body.

3 . The electrical heating device according to claim 2 , wherein the overflow edge passes centrally through an inlet into the distributor.

4 . The electrical heating device according to claim 1 , wherein the distributing body is a conical body which is rotationally symmetrical with respect to an axis of symmetry.

5 . The electrical heating device according to claim 4 , wherein the axis of symmetry corresponds to a flow direction of the medium into the distributor.

6 . The electrical heating device according to claim 4 , wherein the conical body has a concave shell surface.

7 . The electrical heating device according to claim 4 , wherein an inlet to the distributor is formed symmetrically to an inlet axis and the inlet axis forms the axis of symmetry of the conical body.

8 . The electrical heating device according to claim 4 , wherein the conical body is formed centrally to an inlet to the distributor.

9 . The electrical heating device according to claim 1 , wherein the distributing body is configured such that the two partial flows differ from each other by a maximum of 10%.

10 . The electrical heating device according to claim 9 , wherein the distributing body is configured such that the two partial flows differ from each other by a maximum of 2%.

11 . The electrical heating device according to claim 1 , wherein the distributor is formed in a plane containing the first heating chamber.

12 . The electrical heating device according to claim 11 , wherein the distributor is connected to an inlet flow connection and to an outlet flow connection connecting the distributor to the second heating chamber, and wherein the inlet flow connection and the outlet flow connection extend in a direction transverse to a plane containing the heating device and penetrate the plane containing the heating device.

13 . The electrical heating device according to claim 12 , wherein the distributor comprises an inlet distributor section extending between the distributing body and the inlet flow connection in the plane containing the first heating chamber.

14 . The electrical heating device according to claim 12 , wherein the distributor comprises an outlet distributor section extending between the distributing body and the outlet flow connection in the plane containing the first heating chamber.

15 . The electrical heating device according to claim 14 , wherein the distributor sections are arranged axially symmetrically to one another.

16 . The electrical heating device according to claim 12 , wherein the distributor sections have an approximately triangular ground area in a top view of the plane containing the first heating chamber, and wherein the tip of the approximately triangular ground area is rounded, and the respective flow connections are provided opposite thereto.

17 . The electrical heating device according to claim 1 , wherein the heating assembly comprises at least one PTC element.

18 . The electrical heating device according to claim 1 , wherein partial flows coming from the first heating chamber and from the second heating chamber are brought together by the distributor.

19 . The electrical heating device according to claim 1 , wherein the first heating chamber is formed between 1) a housing bottom of a housing base part forming an inlet and an outlet for the medium and 2) a heating chamber cover which is connected to the housing base part, wherein the second heating chamber is formed by a fluid housing, and wherein the housing base part forms the distributor.

20 . The electrical heating device according to claim 18 , wherein the housing base part is connected to an inlet nozzle leading to the inlet and to an outlet nozzle leading to the outlet wherein the housing base part forms a first inlet channel section communicating with at least one of the inlet nozzle and a first outlet channel section communicating with the outlet nozzle, wherein the fluid housing forms a second inlet channel section that is aligned flush with the first inlet channel section and a second outlet channel section that is aligned flush with the first outlet channel section, and wherein the second inlet channel section and the first outlet channel section are provided downstream of the distributor in a direction of medium flow.

Assignees

• Eberspaecher Catem Gmbh & Co

Inventors

• Bürkle Kai-Fabian
• Hoffmann Markus
• Wang Jikang
• Ahoufack Gaetan
• Kröner Timo
• Weinand Ralf Lothar
• Herzig Sascha
• Asafi Ahmad
• Bachmann Andreas
• Beck Fabian
• Bauer Carina

Classifications

• F24H9/1818 Primary

  Arrangement or mounting of electric heating means · CPC title

• H05B3/262

  the insulating base being an insulated metal plate · CPC title

• H05B2203/021

  Heaters specially adapted for heating liquids · CPC title

• H05B2203/02

  Heaters using heating elements having a positive temperature coefficient · CPC title

• H05B3/141 Primary

  Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds · CPC title