Heating device

Abstract

The invention discloses a heating device. The heating device comprises an outer shell, a bottom shell detachably connected to the outer shell and a U-shaped heating pipe. The outer shell and the bottom shell are matched to form a U-shaped containing cavity together, the U-shaped heating pipe is partially arranged in the U-shaped containing cavity, and two straight pipe parts of the U-shaped heating pipe partially extend outwards relative to the U-shaped containing cavity; the bent portion of the U-shaped heating pipe abuts against the bottom shell, the bottom shell is fixedly connected with atemperature controller, and the temperature controller can detect the temperature of the U-shaped heating pipe through the bottom shell. During working, a medium can be uniformly heated, so that the temperature stability of the medium led out from the outlet pipe is good; and meanwhile, the U-shaped heating pipe can be accurately and timely detected, and the situation that when a welding process is used for fixing the temperature controller, a welding spot rusts, and consequently a medium is polluted is avoided.

Description

technical field [0001] The invention belongs to the technical field related to medium heating, and in particular relates to a heating device. Background technique [0002] At present, the existing heating devices applied to small household appliances such as water dispensers and capsule coffee machines usually include a straight pipe with a circular cross-section, and a U-shaped electric heating pipe arranged in the straight pipe, wherein the U-shaped electric heating pipe The upper two straight pipe parts are arranged adjacently, and the whole of the U-shaped electric heating pipe is fixed in the pipe of the straight pipe through the welding sheet. Wherein, in the existing heating device, a temperature controller is usually fixed on the straight pipe by welding, and the temperature controller is used to detect the heating temperature of the U-shaped electric heating pipe during operation. [0003] When the above-mentioned heating device is working, the U-shaped electric he...

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Problems solved by technology

However, since the U-shaped electric heating tube is integrally arranged in the straight tube, the gap between the periphery of the U-shaped electric heating tube and the wall of the straight tube is not uniform, and it is impossible to achieve uniform heating of the medium passing through the straight tube, so that the straight tube The temperature stability of the water outlet is poor; at the same time, when the temperature controller is working to detect the working temperature of the U-shaped electric heating tube, it is necessary to use the medium placed between the U-shaped electric heating tube and the straight tube wall as the heat transfer medium, so that It makes it impossible to accurately detect the working temperature of the U-shaped electric heating tube when the thermostat is working; and because the existing thermostat is fixed to the straight tube by welding, and there is a medium in the straight tube, after a long time of use , the medium will corrode and rust the solder joints of the straight pipe, thus polluting the medium passing through the straight pipe

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