公开(公告)号：US5050796A

公开(公告)日：1991-09-24

申请号：US487113

申请日：1990-03-02

申请人： Dieter Raethel ,  Christof Schumacher ,  Wilfried Renovanz ,  Bernhard Umlauf

发明人： Dieter Raethel ,  Christof Schumacher ,  Wilfried Renovanz ,  Bernhard Umlauf

IPC分类号： B60H1/03 ,  B60H1/22 ,  F02B3/06 ,  F23K5/20 ,  F24H3/06

CPC分类号： B60H1/2209 ,  B60H1/2203 ,  F23K5/20 ,  F24H3/065 ,  B60H2001/2284 ,  F02B3/06

摘要： A heater, in particular a motor vehicle heater operated with liquid fuel in which the fuel to be fed to the burner of the heater is preheated using the thermal energy of the combustion gases in the discharge area of the heater to guarantee reliable operation of the heater even at low temperatures, and to prevent paraffin separations, especially with diesel fuel in advance of filter devices in the fuel supply of the burner. For this purpose, a fuel preheating pipe section is provided that can be made in the form of a spiral-shaped pipe loop and that is placed in the flow of combustion gases, which have passed through the heat exchanger of the heater. Since the fuel is warmed in the fuel flow pipe before passage through the filter device, clogging of the filter device is avoided. In accordance with various embodiments the fuel preheating pipe section can be placed in an exhaust gas collecting chamber of the heater or in an exhaust gas discharge connection. Another embodiment feature includes the provision of a second heat exchanger that warms the fuel to being fed to the internal combustion engine using the liquid coolant that was previously warmed in the motor vehicle heater and which also serves as the heat exchange medium for the heat exchanger of the heater.

摘要翻译： 加热器，特别是用液体燃料操作的机动车加热器，其中待加热到加热器的燃烧器的燃料使用加热器的排放区域中的燃烧气体的热能预热，以确保加热器的可靠运行 即使在低温下也能防止石蜡分离，特别是在燃烧器的燃料供给中的过滤装置之前，尤其是柴油燃料。 为此，提供了一种燃料预热管段，其可以形成为螺旋形管道的形式并且被放置在通过加热器的热交换器的燃烧气体流中。 由于燃料在通过过滤装置之前在燃料流管中被加热，所以避免了过滤装置的堵塞。 根据各种实施例，燃料预热管部分可以放置在加热器的排气收集室中或废气排放连接中。 另一实施例的特征包括提供第二热交换器，该第二热交换器使用先前在机动车辆加热器中加热的液体冷却剂来加热燃料以供给内燃机，并且还用作热交换器的热交换介质 加热器。