Heating device for a vehicle and method for operating the heating device

Heating device for a vehicle and method for operating the heating device

  • CN 104,272,054 B
  • Filed: 04/29/2013
  • Issued: 10/09/2020
  • Est. Priority Date: 05/02/2012
  • Status: Active Grant
First Claim
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1. A heating device (10) for a vehicle, comprising:

  • a flow path for a liquid heat transfer medium,an electrical heating unit (25) for heating the liquid heat transfer medium on the heating portion of the flow path, wherein the electrical heating unit (25) comprises a heating resistor;

    an electronic control unit (26) for controlling the heating power of the heating device, wherein the electronic control unit (26) is provided with a heat discharging body (28) for discharging waste heat from the electronic control unit (26) to the heat transfer medium on the inlet portion of the flow path, anda heat transfer unit (18) for transferring heat from the heating unit to a heat transfer medium in the heating portion, wherein the heat transfer unit (18) and the heat discharging body (28) are formed as a single piece,wherein the heating section comprises at least two circuitous channels (20) through which the heat transfer medium can flow in parallel, the heating device serving as an auxiliary heating device, andeach of the channels comprises exactly 2 ×

    N hairpin curves, where N is a natural number;

    wherein the flow path includes an inlet portion (16) upstream of the heating portion and an outlet portion (22) downstream of the heating portion, wherein the passage branches off from the inlet portion and discharges to the outlet portion; and

    wherein the heating device comprises a connection (44) interconnecting the heat transfer unit (18) and the heat discharging body (28), and the connection (44) extends along a non-straight line such that a thermal resistance between the heat transfer unit (18) and the heat discharging body (28) is increased compared to a shortest straight line.

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