| 摘要 |
A fluid heater of the flow-heater type with a fluid channel having a first fluid channel section (35), at least one substantially cylindrical metal pipe (2), a heating device (6) having preferably two tubular heating bodies (6a, 6b) spaced apart from each other over equidistant circumferential sections of the metal pipe, and a heat-conducting means for the heat-conducting connection to the metal pipe (2), wherein a fluid-guiding core (30) which is made from plastic is arranged in the metal pipe (2), the fluid-guiding core forming the first fluid channel section (35) between the metal pipe and the fluid-guiding core (30), wherein the first fluid channel section (35) runs substantially helically in the form of a groove in an outer surface of the fluid-guiding core, and wherein the fluid channel has a first fluid connection for fluid supply means and a second fluid connection for fluid removal means, wherein the fluid-guiding core (30) furthermore has a second fluid channel section (34) which is arranged, substantially coaxially, in the interior thereof and is connected in series with the first fluid channel section (35). A fluid connection subassembly can be provided in the region of a first end of the metal pipe (2), said fluid connection subassembly having both the first fluid connection (24a) and the second fluid connection (24b), and therefore fluid is supplied and fluid is removed in the region of the same end sides of the metal pipe (2). A closure stopper (50) is then provided in the region of the second end of the metal pipe (2). |
