Abstract:
An electric heating system, in particular an auxiliary heating system in automobiles, with below characteristics: The heating system has several heating rods (1), arranged side-by-side The heating rods (1) are connected to each other by means of alike metal plates (4) that are slid onto the heating rods (1) the heating rods (1) have for this purpose a series of slotted holes (3) that extend in the longitudinal direction (10) of the metal plates (4) the slotted holes (3) have longitudinal edges, facing each other, that clamp the heating rods (1) between them; at least one part of the slotted holes (3) in each metal plate (4) is longer by more than the manufacturing tolerance, than the width of the heating rods (1) measured in the longitudinal direction (10) of the metal plates (4).
Abstract:
An airflow heater includes a housing, an air source to generate an airflow and a heat coverage enhancement supported in front of the air source. The heat coverage enhancement includes at least a PTC heat generating arrangement for generating heat, a heat dissipating arrangement for transmitting the heat therefrom, and an airflow guider frontwardly, outwardly, and inclinedly extended from the heat dissipating arrangement for deviating an exiting angle of the airflow, such that the airflow guider maximizes the exiting angle of the airflow with respect to the housing for enhancing a coverage of the airflow.
Abstract:
An electric heating module includes an electric heater (10), a heat pipe (20) having an evaporating section (22) thermally attached to the electric heater and a condensing section (24), and at least one heat radiator (30, 40) thermally attached to the condensing section. The electric heater includes a pair of electrode plates (12, 14) and a heating element (16) sandwiched between and electrically connecting the electrode plates. An insulation frame (19) encloses the electrode plates therein for electrically insulating the electric heater from the heat radiator. For the non-linear PTC heating element, the electric heater can rapidly heat up to and stay at a desired stable temperature. The heat pipe can transfer heat from the electric heater to the heat radiator rapidly and timely by phase change.
Abstract:
A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.
Abstract:
The invention relates to an electric-type heating device 1, particularly intended to heat an air flow passing through a motor vehicle ventilation, heating and/or air-conditioning system, comprising: a heating unit 2 consisting of a frame 4 wherein at least one heating element 5 is fitted, a connector 3 intended to connect the heating element 5 to an electrical power supply from the vehicle, characterized in that the connector 3 comprises a first interface 30 intended to be connected to the heating element and a second interface 17 intended to be connected to the electrical power supply from the vehicle. Application to electric radiators for a motor vehicle.
Abstract:
An electric heating module includes an electric heater (10), a heat pipe (20) having an evaporating section (22) thermally attached to the electric heater and a condensing section (24), and at least one heat radiator (30, 40) thermally attached to the condensing section. The electric heater includes a pair of electrode plates (12, 14) and a heating element (16) sandwiched between and electrically connecting the electrode plates. An insulation frame (19) encloses the electrode plates therein for electrically insulating the electric heater from the heat radiator. For the non-linear PTC heating element, the electric heater can rapidly heat up to and stay at a desired stable temperature. The heat pipe can transfer heat from the electric heater to the heat radiator rapidly and timely by phase change.
Abstract:
A positive temperature coefficient (PTC) rod assembly having PTC elements including a channel-shaped, lower PTC rod, a contact plate with through-holes, and an insulator with protrusions penetrating through the through-holes. The insulator is coupled to and wraps a portion of the contact plate, and includes first and second seating sections exposing portions of side surfaces of the contact plate. PTC elements are in the first seating sections and in contact with the contact plate, heat transfer blocks are in the second seating sections in contact with the contact plate, and an upper PTC rod is coupled to the lower PTC rod to cover an open portion of the lower PTC rod. A vehicle pre-heater includes a plurality of such PTC rod assemblies in parallel to one another, with heat radiation fin assemblies coupled in close contact with both surfaces of each of the PTC rod assemblies, a pair of frames coupled to outer side surfaces of the outermost heat radiation fin assemblies, and first and second housings coupled to both longitudinal ends of a combination of the PTC rod assemblies, the heat radiation fin assemblies and the frames. Housing terminals are provided in the housings and serve as cathode terminals.
Abstract:
A vacuum heater assembly for heating fluids flowing within; the assembly comprises an inner member having a heating surface with an average cross-sectional area with an aspect ratio of at least 2. The inner member is disposed within an outer member and with a vacuum drawn in the space between the inner member and the outer member, the heat transfers toward the center of the inner member, heating the fluids flowing within.
Abstract:
A sheathed electrical resistance heater is provided with a metal corrugated resistance heating element located internally within a surrounding metal sheath and separated from the sheath by a compacted insulating material such as magnesium oxide. The preferred corrugated resistance element is a flat strip of metal that has been corrugated such as by passing the strip through the nip of a pair of gears. The corrugated strip resistance element is thicker than a foil and may be used to provide sheathed, electrical resistance heaters where it is too difficult to wind large diameter wires, which are desired for a low resistance ohm of 0.12 ohm/inch or less, on a small arbor to form a coiled wire resistance element. A heater may be formed with a resistance of 0.05 ohm/inch using the corrugated metal ribbon and may be 200 inches in length and have a finned sheath. Preferably, the sheath is compressed in a die to reduce the cross-sectional area of the heater without a substantial elongation of the sheath.
Abstract:
The present invention relates to an electric heater, which electrically and mechanically protects heating means from the outside, increases heating value and thermal conductivity by increasing contact efficiency among components, and improves assembly efficiency and productivity. The electric heater includes: a plurality of radiation members, each having a radiation fin and a radiation fin supporting plate surrounding the radiation fin and formed integrally with the radiation fin by brazing; a plurality of flat tubes arranged between the radiation members and having heating means therein for generating heat when electric power is supplied; first and second support frames oppositely arranged at sides of the outermost radiation members for supporting and fixing the radiation members and the flat tubes; and first and second caps for supporting both end portions of the first and second support frames and both end portions of the flat tubes.