The invention relates to an electric radiator (1) for a motor vehicle comprising a rigid frame housing heating elements (18) and radiating elements (12) through which an air flow can pass, the radiator being provided with a temperature measurement device (2) comprising at least one temperature sensor (4) and a support element (5) comprising at least one housing (51) for one or more temperature sensors (4) and an electric radiator attachment device, characterised in that the attachment device associated with the support element (5) comprises at least one snap-fastening element (6) configured to cooperate with one of the radiating elements (12) of the radiator (1).

The invention relates to a heating device for heating air, having a primary heat source (10) and a heat exchanger (2). The heat exchanger (2) has an interior space (22) for receiving the primary heat source (10) and transfers thermal energy generated by the primary heat source (10) to the air. The heat exchanger (2) includes a holding element (21) for receiving an electric heating element (11) as a secondary heat source (2). The heat exchanger (2) consists of a first heat exchanger unit (201) and a second heat exchanger unit (202).

A process for manufacturing a cast metal heat exchanger housing (12) for a vehicle heater having a pot-shape housing wall (14) extending in a direction of a housing longitudinal axis (L) and having a plurality of heat transfer ribs (22) extending on an outer side of the housing wall (14) in the area of a circumferential wall (16) and in the area of a bottom wall (18) of the housing wall (14) in the direction of the housing longitudinal axis (L). The process includes metal casting wherein a sprue cross-sectional area including at least some of the heat transfer ribs (22). The cast metal heat exchanger housing has an axial end face formed upon cutting off metallic material that is essentially at right angles to the housing longitudinal axis and extends into an area of at least some of the heat transfer ribs.

An electric heating device having a multiplicity of electric heating elements, wherein the respective electric heating element has a first electric contact element and a second electric contact element and at least one heater, wherein the first and second electric contact elements achieve electrical contacting of the at least one electric heater, additionally having a first voltage connection element and a second voltage connection element, additionally having first switching elements and having second switching elements, wherein pairs of two electric heating elements are each wired such that two first electric contact elements in each case of the two electric heating elements can be switchably connected to the first voltage connection element by one of the first switching elements and one of the second contact elements in each case of the pairs can be switchably connected to the second voltage connection element by means of a second switching element.

A heater element for vehicle compartment heating in a vehicle, including a pillar-shaped honeycomb structure portion having: an outer peripheral side wall; and partition walls disposed inside the outer peripheral side wall, the partition walls defining a plurality of cells which form flow paths from a first end face to a second end face;
wherein the partition walls have PTC characteristics; an average thickness of the partition walls is 0.13 mm or less; and an open frontal area on the first and second end faces is 0.81 or more.

The invention relates to a method for producing a corrugated fin element for a heating register or for another heating device, through which corrugated fin element a flow can pass, to a corrugated fin element produced according to such a method, and to a heating register designed with such corrugated fin elements, wherein the corrugated fin elements are produced by unfolding.

The present invention relates to a PT heater and, more specifically, to a PTC heater which: mechanically fixes a heating element, a terminal, an insulating layer, and a heat-radiating unit, which constitute the PTC heater, by bending a fixing projection of a hook structure formed at a heat rod; and further has an auxiliary fixing protrusion capable of fixing the position of the heating element so as to increase the adhesiveness between the PTC element and the heat-radiating unit, thereby enabling performance to improve and facilitating assembly through the heat rod.

The invention relates to a heating device (1) for an air-conditioning housing, said heating device (1) comprising a heating body (2) supplied with current for heating an air flow passing through said heating body (2), said heating body (2) comprising heating elements through which said current passes and which are arranged in electrically insulated tubes (4) of the heating elements, said heating elements being controlled via a distribution unit (3), said heating device (1) comprising means for earthing a plurality of metal elements distributed in the heating body (2) and the distribution unit (3). Said heating device (1) is characterised in that said earthing means consist of a single earthing circuit which passes through the heating body (2) and the distribution unit (3) and is formed by arranging said metal elements in series with direct contact between said metal elements.

A fluid-heating device for heating fluid includes: a heater having a heat generating part, the heat generating part being configured to generate heat upon application of current; an electric component configured to control the application of the current to the heater; a tank having an opening portion, the tank being configured to accommodate the heat generating part; a top-plate portion configured to close the opening portion of the tank, the top-plate portion being configured to form a fluid chamber through which the fluid flows; and a first communication port and a second communication port configured to allow the fluid to flow through the fluid chamber; wherein the electric component is provided on an outer side of the fluid chamber along the top-plate portion.

An electric heating device, in particular for a motor vehicle, includes a housing which has an inlet and outlet opening for a medium to be heated and which encloses a layered structure. The layered stricture comprises at least one PTC element which is electrically conductively connected to conducting elements leading to connections of different polarity, and heat-emitting elements that are conductively connected on both sides to the PTC element. In order to provide improved heat dissipation, the heat-emitting elements include a panel element that is provided with perforations and that is made of a heat-conducting material.