Abstract: A water delivery system is provided, comprising at least one faucet device with a cold water faucet part and a hot water faucet part, a cold water line to the at least one faucet device, a tankless heater device for heating water, a hot water line having a first portion running from an outlet of the tankless heater device to the at least one faucet device and having a second portion running from the at least one faucet device to an inlet of the tankless heater device, and a circulatory pump arranged in the second portion of the hot water line, wherein the circulatory pump has a prefixed first performance level and a prefixed second performance level, wherein the first performance level causes a finite water flow in the hot water line which is below an operation threshold value of the tankless heater device.

Abstract: The invention relates to a liquid heating device for an automobile that comprises at least one first part (1a) made of a heat-conducting material, a liquid flow path (10a) integrally formed in said first part (1a) for enabling a flow of liquid between an inlet and an outlet (12a), and a heating means (14) thermally coupled with said part (1a) and capable of heating said part (1a) so that the liquid flowing through said flow path can absorb the heat of said part (1a). According to the invention, the first part includes a planar bottom wall (15a) extending in a plane parallel to the flow path (10a), and the electric heating means includes a plurality of flat stones (14) having a positive temperature coefficient and arranged as a matrix in the same plane in parallel and in contact with the bottom wall (15a) as well as two electrodes in the form of two planar surfaces, each arranged in parallel and in contact with the corresponding surfaces of the flat stones of the matrix.

Abstract: The invention relates to a heating device having a heating arrangement in a housing through which a fluid medium can flow in a longitudinal direction, wherein the at least one heating arrangement comprises at least two grid elements as heat exchanger plates with openings through which the medium flows, the grid planes of which are embodied for the exchange of heat energy between the plate and the fluid medium, at least one heating element, in particular a PTC element, arranged between the grid elements, wherein the at least one heating arrangement is arranged in the housing in such a way that the grid planes of the grid elements are arranged substantially perpendicularly to the longitudinal direction, so that the flow of medium is oriented substantially perpendicularly to the grid planes, wherein the grid elements and the at least one heating element are arranged braced relative to one another by means of at least one tensioning element so that they touch, and wherein the grid elements each have at least one

Abstract: The present invention relates to a heating device (1) for fuel with at least one PTC heating element (5) and a heat transfer device (6) in thermal contact with the latter, which exhibits two heat transfer elements (7, 7?), and with a tubular casing (2) made of plastic that envelop the heat transfer device (6) and the a least one PTC heating element (5), wherein the diesel fuel to be heated flows through the casing (2) and around the heat transfer device (6) during operation of the heating device (1). Provided on the interior side of the tubular casing (2) is a guiding device that interacts with the at least one PTC heating element (5) and/or the heat transfer device (6) in such a way that at least one PTC heating element (5) and the heat transfer device (6) can be axially inserted into the casing (2) for assembling the heating device (1).

Abstract: A filtering device for fluids features a filter element located in a filter housing and a heating device located in the flow path of the fluid. The heating device comprises a heating element that is held by a heating support which is located at the inner surface of the cover, with a water outlet connection being designed as one-piece with the heating support, the water outlet connection being directed outwards through a recess in the cover.

Abstract: An electrical heating apparatus has: a fin brazed on at least one of a main body upper wall and a main body lower wall of a tube; an insertion unit having an electro-heat-generating element pressure-welded to a wall of one of the main body upper wall and the main body lower wall; and an edge part projecting in the width direction from each of main body vertical walls to form an edge space. The edge space is formed so as to be continuous with the insertion space and is smaller in thickness dimension than the thickness dimension of the insertion unit. The edge part has an edge part upper wall, an edge part lower wall, and an edge part vertical wall disposed in a concave shape.

Abstract: A heat-generating element of a heating device for heating air includes at least one PTC element and, lying on opposing side surfaces of the PTC element, electric strip conductors. A heat-generating element that is improved with respect to the safety against electric flashovers is created with the invention under consideration by means of surrounding the two electric strip conductors on the outside by a non-conductive insulating layer. A heating device for heating air with multiple heat-generating elements is also disclosed with each heating element including at least one PTC element and, lying on opposing side surfaces of the PTC element, electric strip conductors and multiple heat-emitting elements that are arranged in parallel layers and that are held in position lying on opposing sides of the heat-generating element.

Abstract: A heat-generating element of a heating device for heating air includes at least one PTC element and, lying on opposing side surfaces of the PTC element, electric strip conductors. A heat-generating element that is improved with a view to safety from electric flashovers and leakage currents is created with the invention under consideration by providing an insulating gap between the PTC element and the positioning frame material that circumferentially surrounds the frame opening. Also disclosed is a heating device for heating air with multiple heat-generating elements, each heat-generating element comprising at least one PTC element and, lying on opposing side surfaces of the PTC element, electric strip conductors and multiple heat-emitting elements that are arranged in parallel layers and that are held in position in a frame on opposing sides of the heat-generating element with a spring bias.

Abstract: Functional elements, particularly PTC heating elements, are braced in a hollow reception means, such as a profile tube. The reception means have two at least partly concave top wall areas facing one anther and flat sides of the functional elements and in this way permits a bracing of the functional elements, in that side walls of the reception means, extending substantially perpendicular to the concave top wall areas, are subject to the action of a pressing pressure. In the free space areas defined by the concave top walls can be fitted ends of attachment parts, such as metal lamellas, which are clamped in the same operation, according to the invention, during the bracing of the functional elements. This makes it possible in a simple manner to manufacture assembled devices, particularly electric heating devices.

Abstract: The aim of the invention is the application of simple production methods for electrical resistance heating elements with a honeycomb body and use total capacity with regard to the specific electrical power per volume unit. Said aim is achieved for an electrical resistance heating element with a honeycomb body of resistance material with positive temperature coefficients for the resistance (PTC resistance), in which the channels, for throughflow of a medium for heating, comprise metallised walls and are electrically alternately contacted after the fashion of a chess-board on the front faces of the honeycomb body by means of a front face metallisation, whereby an insulation region (1) is alternately let into the metallisation (3) on the walls of the channels running from the front faces, whilst the front face metallisation (2) completely covers the front faces.

Abstract: In a heating facility (6) for a motor vehicle component to be heated, a heating element (12) is held within a receptacle (11) by a sealing compound (13). The receptacle (11) is manufactured from aluminum and can be introduced into a correspondingly formed heating well of the component. As a result, the heating facility (6) can be mounted in a very simple way and used for heating highly diverse components.

Abstract: A fuel filter 10 for filtering diesel fuel, in which a heater 14 is provided which at temperatures below 0° C. warms the diesel fuel in order to liquefy the diesel fuel so that a filter element 13 will not clog. The heater 14 includes a heat transfer body 29 onto which a supporting layer 35 is applied, which is thermally stable and electrically insulating. On this supporting layer 35 a heating element is provided which heats the thermal transfer body 29. A protective layer 37 is disposed over the heating element 34 in order to protect it.

Abstract: Disclosed is an indirectly heating type of an electric boiler capable of operating at a high efficiency using less energy.

Abstract: A simple-type fluid tube structural arrangement providing a heating tube that directly heats a fluid in an uncomplicated structural configuration that achieves the objectives of affording convenience and efficient heating which consists of an aluminum extruded and drawn heating body. A horizontally oriented flow hole passes through one side of the heating body and a casement is disposed adjacent to the other side. Installed in the interior section of the casement is a regulating temperature coefficient ceramic resistor constituting a heat generator and, furthermore, a malleable side is formed at the two sides of the said casement for squeeze mounting the heat generator. Moreover, a connective opening is formed at the front and rear ends of the said flow hole. As such, due to the simpler configuration and the close proximity of the heat generator against the flow hole, the present invention achieves simplified assembly and installation, while providing a heating tube that efficiently heats fluids.

Abstract: An electrical heating device (10) for heating liquids employing one or more positive temperature coefficient (PTC) thermistors as heating elements (11). These heating elements (11) are in direct thermal and electrical contact on opposing sides (22), which are coated with a conductive metal such as aluminum, with electrodes to supply electrical current. These electrodes are in turn in direct thermal contact on their outward-facing sides with respect to the heating elements with plates (15) which are formed of a thermally conductive and electrically insulating ceramic material such as AL203, and the plates are in direct thermal contact on their outward-facing sides with respect to the heating elements with heat radiation units (20) which include cooling fins for heat transfer.

Abstract: The present invention provides a diesel filter system and a fuel heating device comprising a PTC heating element and a rod-shaped heat conductor which is in thermal contact with PTC heating element. The rod-shaped heat conductor comprises at least two tubular parts arranged in parallel. The PTC heating element is located between said at least two tubular parts. The system and device according to the invention is of compact constructional design and can therefore be installed in different kinds. The invention increases the rate of flow and allows for a high heat transfer from the PTC heating element to fuel.

Abstract: In a heating device used for melting snow on a road, a roof or the like, or for room heating of in-door facilities, in order to heat a to-be-heated or heated object uniformly over its entire area and enable to utilize effectively a PTC heater, a heat diffusing plate 14 for diffusing heat generated from a heat generating body 16 is arranged on an upper face of the heat insulating member 12 and the heating body 16 is arranged in a recess portion 13 installed on its upper face. The heating body 16 is constituted by inserting a heat generating element 4 mounted with heat radiating plates 5 into a vessel 2 enclosed with a heat storing agent 3 of a latent heat absorbing type in a state in which the heat generating element is brought into contact with the heat storing agent 3.

Abstract: A method and apparatus for electrically heating fluid media with a bar shaped immersion heater is provided. The bar shaped immersion heater includes a thin strip heating element within a heat conductive bar. Electrical power is then connected to the thin heating element. The thin-strip heating element eliminates the hot spots found in coiled resistor wire immersion heaters. The heat conductive bar has a first bar and a second bar, the first bar and the second bar adjoin together, and the thin strip heating element is sandwiched between them. The heat conductive bar has fins to increase the surface area of the heat conductive bar. The fins project from the sides of the heat conductive bar to induce a convective flow around the heat conductive bar.

Abstract: A heater for heating a liquid in which the electrical contact between a PTC thermistor and electrode plates is surely realized, and the thermal coupling and the thermal efficiency are excellent. In a case 1, an internal space 13 has an opening 14 at one side portion, and the whole of the periphery of the case is closed except the opening 14. A pair of electrode plates 21 and 22 have projections 211 and 221 on faces 212 and 222, and are housed in the internal space 13 of the case 1 in such a manner that their other faces 223 are opposed to heat radiating faces 11 and 12. The PTC thermistors are disposed between the electrode plates 21 and 22 in such a manner that projections 211 and 221 are contacted with the electrodes 32 and 33, respectively. Thermal conductive fillers 41 and 42 made of a resin are charged between the electrodes 32 and 33 of the PTC thermistors 3 and the electrode plates 21 and 22 so as to fill the gaps which are formed by the projections 211 and 221.

Abstract: An electronic immersion heater includes a tube closed at one end that contains in succession from its bottom to its open end: a heating element, an electronic circuit board with the corresponding support and with a temperature sensor, and a hermetic plug. The electronic heater is characterized in that the sensor is pushed into direct or indirect contact with the tube by means of a single helical spring, which furthermore simultaneously acts as a spacer and as an electrical contact, without conventional rheophores, between the temperature sensor and the electronic circuit board.

Abstract: A device for heating flowing liquid or gaseous media has a heating element including a PTC resistor arranged between a pair of perforated metallic bodies serving as power supply terminals for the resistor. The heating element is positioned inside a tubular housing defining a flow path for the medium to be heated and made of two mating housing parts, with the heating element extending across the flow path for flow of the medium through the perforations of the metallic bodies to transfer heat to the medium. A bracket on each metallic body fastens the heating element to the housing and is electrically connected to a contact on one end of a power supply cable molded as an integral part of one of the housing parts and terminating at its other end in an electrical plug outlet on the housing part connectable to a battery or electrical network.

Abstract: A device for heating flowing media in a handpiece, particularly air or water for use in dentistry procedures, includes a structural unit for controllably heating a flowing medium disposed in a housing in a sealed manner such that an annular flow passage is formed between an interior wall of the housing and the structural unit. The structural unit includes a PTC resistor having end faces disposed between and in thermal and electrical contact with a pair of porous sintered metal heat exchanger elements at a non-zero angle to the direction of medium flow. Connectors on the opposing ends of the unit contact the sintered heat exchanger elements to flow connect the structural unit in a medium flow line and to electrically connect the PTC resistor to a heating control circuit.

Abstract: A supplementary passenger compartment heating assembly for use in conjunction with an automobile HVAC system having a forced air duct opening to the compartment includes a generally rectangular cross section air distribution duct molded integrally with the forced air duct from a heat conductive PTC polymer material. The air distribution duct has a pair of sides separated by a plurality of ribs extending therebetween so as to provide increased heat transfer area to the air forced therethrough.

Abstract: A PTC heater for securely positioning resistors is disclosed. The PTC heater has two insulating plates having a plurality of square or rectangular through holes, a conductive position plate having a plurality of square or rectangular through holes facing toward those in the insulating plates and a resistor cavity defined by four angular-shaped fixing chips fixed on each of the four inside faces for positioning a PTC resistor therein, and a conductive elastic plate having a plurality of square or rectangular through holes facing toward those in the insulating plates. The elastic plate has an elastic projection on each of the four inside faces of a through hole for pressing a lateral surface of a PTC resistor positioned in a through hole of the position plate after the elastic plate and the position plate have been sandwiched between the two insulating plates.

Abstract: A fluid heater utilizing a porous ceramic, for example silicon carbide, electrically conductive body as an electrically energized heating element to heat a fluid passing through the pores thereof is provided. A plurality of interconnected annular fluid flow passageways are positioned in the fluid heater so that fluid exiting therefrom surrounds the porous body, further improving the efficiency of the porous fluid heater body. An electrical disc rear contactor is positioned within one end of the cylindrical sleeve to peripherally engage the sleeve and axially electrically engage the body. An electrically conductive disc front contactor is positioned concentrically at an opposite end of the sleeve to peripherally engage the housing in electrical contact relationship and axially engage the body in electrical contact relationship.

Abstract: A heating apparatus for heating a fluid medium confined in a hermetically sealed housing chamber including a terminal assembly having a body member sealed in the housing chamber wall with pins extending in sealed relation therethrough to provide electrically conductive inner and outer pin segments respectively connected to heat transfer members and an electric power source, the heat transfer members including a heating element and a support for the heating element which is independent of a novel electrical connection between the inner pin segment and heating element to insure stable electrical connection and a minimum of vibration.

Abstract: A heating apparatus for heating a fluid medium confined in a hermetically sealed housing chamber including a terminal assembly having a body member sealed in the housing chamber wall with pin means extending in sealed relation therethrough to provide electrically conductive inner and outer pin segments respectively connected to a heat transfer member and an electric power source, the inner pin segment means and heating element being electrically insulated from the housing wall.