The present invention discloses an inner pipe for a liquid heating apparatus, including a hollow pipe body made of a metal or an alloy, where a pipe wall thickness of the pipe body is 0.3-1.0 mm; through a machining method of rolling or pressing, a spiral diversion structure is machined on an inner peripheral wall of the pipe body along an axial direction of the pipe body, so that the spiral division structure is formed to extend along the axial direction of the pipe body. The present invention further discloses a liquid heating apparatus and a manufacturing method therefor. The liquid heating apparatus includes the inner pipe and the outer pipe; a heating assembly is disposed on the outer peripheral wall of the outer pipe.

The invention relates to a combination of an electrical heating element and a heat dissipater to be heated thereby; the heating element comprises a substrate, an insulating layer located on the substrate and a thick film conductor located on the insulating layer, wherein the second side of the metallic substrate is in contact with the heat dissipater, comprising a layer of metallic material on its face towards the heater and wherein the substrate is brazed to the heat dissipater and the surface of the heating element over which the thick film conductor extends, is substantially equal to the surface of the heat dissipater. The brazing leads to a permanent contact between the heating element and the heat dissipater, so that the possible tendency for warping as caused by the heating and cooling cycles will be withstood.

The present invention relates to a cartridge-type inline heater including: a heat exchanging unit including a body part in which a mounting part is formed in a longitudinal direction, and swirl parts coiled in a spiral along the longitudinal direction of the body part, and configured to induce a flowing-in working fluid to flow along the swirl parts; and a heater inserted in a longitudinal direction of the heat exchanging part to heat the working fluid which is in contact with the heat exchanging unit. Accordingly, the cartridge-type inline heater capable of heating the working fluid so as to have improved durability and uniform temperature distribution is provided.

Electric water heater heating device comprising a housing composed of an upper cover and a lower shell, a metal guide tube and a magnetic coil which are mounted in the housing. The metal guide tube is designed as a spiral shape and is divided into two groups each including two layers. The metal spiral guide tube of a lower layer continuously winds inward from periphery to center, and the metal spiral guide tube of an upper layer continuously winds outward from center to periphery. The two groups of the metal spiral guide tubes are respectively arranged above and under the magnetic coil for heating. In the heating device electromagnetic pulse waves, which are excited by the magnetic coil according to magnetic coil principle, are used to penetrate at high speed the metal spiral guide tubes arranged above and under the magnetic coil to cause the metal spiral guide tubes to generate high heat. The water flows continuously in the guide tube, taking away the heat, as a result, the water in the guide tube is heated continuously without a break.

A water heater insert device positioned within an electrical showerhead or as a standalone liquids heating device. The water heater insert optimizes heat transfer by channeling water through a channel of a spiral or zigzag form where a deployed heating element supplies thermal energy. The channel maximizes water contact while minimizing the space. A temperature limiter adds protection against scalding.

An inline heater includes a heater core that includes a heat spreader assembly comprising a tubular heat spreader that extends axially along a longitudinal axis and that comprises an external surface. The heat spreader assembly includes a fluid inlet and a fluid outlet. At least one conduit extends helically about the longitudinal axis of the heat spreader between the fluid inlet and the fluid outlet to define a fluid heating flow path that fluidically connects the fluid inlet and the fluid outlet. The heat spreader assembly further comprising an electrically operated heating element for heating the heat spreader.

Provided is an apparatus for manufacturing beverage. The apparatus includes a heat exchanger to heat a fluid. The heat exchanger includes a body including a first end portion and a second end portion, and the second end portion is opposite to the first end portion. The apparatus further includes a heater embedded in the body, a first pipe installed in the body and guiding the fluid in a first direction from the first end portion of the body to the second end portion of the body, and a second pipe installed in the body and guiding the fluid output from the first pipe in a second direction opposite to the first direction.

A system for overheating gases at the inlet of a SOEC/SOFC-type solid oxide stack, the stack including a main body that has first and second zones separated by a median plane, and inflow and outflow conduits, the zones include gas circulation circuits extending in the form of a spiral and communicating by means of a passage passing through the main body. A gas flow to be heated entering the inflow conduit circulates in the first gas circulation circuit and passes through the passage to then circulate in the second gas circulation circuit and in the conduit for the outflow of the reheated gases in order to reach the inlet of the SOEC/SOFC-type solid oxide stack.

A heating device for heating a liquid includes at least one infrared heat source, such as an infrared lamp, accommodated in a corresponding casing of a heat conducting material. The heating device furthermore includes a conduit of a heat conducting material, where the conduit has an inlet and an outlet and where liquid to be heated in use flows through the conduit from the inlet towards the outlet. The conduit is wound spirally around the casing of the infrared heat source to facilitate, in use, the emission of infrared radiation by the heat source through the casing and the conduit into the liquid flowing through the conduit so as to heat the liquid.

A fluid heater includes: a passage member having a passage formed therein; a heater for heating the passage member; a fixing member for fixing the passage member to a fluid control device; and a connection member connected to the passage member so as to allow fluid to flow into the passage member. The passage has a helical shape.