A heating arrangement has a coolant housing with an inflow connection and an outflow connection for a coolant. Heating elements are arranged on opposite housing walls and include connections for the supply of power. Three circuit-board pieces of a circuit board are arranged in a row and connected to one another via flexible regions. Power electronic components and connections for connecting to the power-supply connections of the heating elements are arranged on the two edge circuit-board pieces. The circuit board is bent in flexible regions such that the two edge circuit-board pieces lie opposite one another. The coolant housing lies between the opposite edge circuit-board pieces. The power-supply connections of the heating elements and the connections on the edge circuit-board pieces are in electrical contact.

The present invention relates to a coolant heater comprising: a heating element for heating coolant; a first housing for accommodating the heating element; a cover plate for sealing the first housing in which the heating element is accommodated; a temperature fuse provided in an external space formed by coupling the first housing and the cover plate, and disposed to be adjacent to the cover plate; and a second housing for pressing the temperature fuse so as to pressurize the same toward the cover plate, wherein overheat sensing responsiveness of the heating element is improved such that the overheat of the heating element can be prevented, and failure factors in a part in which the temperature fuse is coupled are reduced such that a durability is improved.

The present invention relates to a heater for a vehicle system for injecting anaqueous solution in an air intake line upstream of a combustion chamber of aninternal combustion engine, or in the combustion chamber of the internal combustion engine, said heater comprising at least one flexible part which comprises at least one metallic resistive track embedded in an insulating material, said insulating material comprising at least one antimicrobial compound and/or being coated by at least one layer containing at least one antimicrobial compound. The invention relates also to a vehicle system for injecting an aqueous solution in an air intake line upstream of a combustion chamber of an internal combustion engine, or in the combustion chamber of the internal combustion engine comprising said heater.

A heat exchanger for heating a fluid that exhibits simplified manufacturing, a reduced construction size, and/or an increased heating efficiency. The heat exchanger has at least two distanced tube bodies through which a flow path of the fluid leads. A thin-film resistor is applied on the outer surface of at least one of the tube bodies with an interface made of a thermal interface material located between the thick-film resistor and the next neighboring tube body.

A heating apparatus, in particular for recreational vehicles like campers or caravans, comprises a heating unit and two separate heat exchanging units, which are coupled to the heating unit in parallel with each other. The heating unit comprises one burner for each heat exchanging unit and one common single combustion air fan unit. The single combustion air fan unit is configured to supply both burners with combustion air, and the burners are configured to burn fuel gas or liquid further supplied to each of the burners together with the combustion air received from the single combustion air fan unit to get hot exhaust gasses. The heat exchanging units are configured to receive the exhaust gasses from the burners, and to transfer heat from the exhaust gasses to fluids to be heated, provided within the heat exchanging units. Furthermore, the present invention refers to a recreational vehicle with such a heating apparatus and methods for heating two distinct fluids with the above heating apparatus.

A heating apparatus, in particular for recreational vehicles like campers or caravans, comprises a heating unit and two separate heat exchanging units, which are coupled to the heating unit in parallel with each other. The heating unit comprises one burner for each heat exchanging unit, and at least one combustion air fan unit configured to supply the burners with combustion air. The burners are configured to burn fuel gas or liquid further supplied to each of the burners together with the combustion air received from the combustion air fan unit to get hot exhaust gasses. The heat exchanging units and are configured to receive the exhaust gasses from the burners, and to transfer heat from the exhaust gasses to fluids to be heated, provided within the heat exchanging units. The heat exchanging units are positioned in parallel with each other side by side on one side of the heating unit. Furthermore, the present invention refers to a recreational vehicle with such a heating apparatus.

A high-voltage heater for a motor vehicle for heating a coolant is disclosed. The high-voltage heater includes at least two flat tubes that are flowable through by the coolant and at least one heating element. The at leas two flat tubes and the at least one heating element are alternatingly stacked on top of one another in a stacking direction to form a stack. The at least one heating element is connected at least to one of the adjacent flat tubes in the stack in a heat-transferring manner.

The present application discloses an electric vehicle, and a heating cavity assembly of an electric heater of the electric vehicle. The heating cavity assembly includes: an electric heating unit, located in a heating cavity and configured to convert electric energy into heat energy; a flow channel structure, located in a heat exchange cavity, configured to allow a heat transfer medium passing through the flow channel structure to receive heat energy from the electric heating unit and including a plurality of medium flow channels, wherein the plurality of medium flow channels extend in parallel to each other along respective extension track lines with a translation relationship.

A washer fluid heating device includes a container that contains a washer fluid, a lid portion attached to a first end of the container to face an accommodation space for the washer fluid, heating means that has a proximal end portion attached to the lid portion and extends toward the accommodation space, and an outflow pipe having an outlet disposed in the accommodation space to allow the washer fluid in the accommodation space to flow out, and the outlet of the outflow pipe is provided such that a space formed between a horizontal plane passing through the outlet and an inner wall surface at a second end on an opposite side to the first end of the container corresponds to 10% or more of a volume of the accommodation space.

A heating system is connected to a source of supply fluid to be heated, and has an internal combustion engine provided with engine coolant and gases that flow to and from the engine, and are heated thereby. A heat generator is provided in fluid communication with a supply of heat transfer fluid for circulating the heat transfer fluid in the heat generator causing fluid friction to create heat directly in the heat transfer fluid, and provide heated transfer fluid that is not in fluid communication with the engine. A fluid heat exchanger arrangement is provided in fluid communication with the supply fluid, the engine coolant, the gases of the engine and the heated transfer fluid for transferring heat from the heated engine coolant, the heated engine gases, and the heated transfer fluid to heat the supply fluid.