Abstract: A dispensing system for jetting a material onto a substrate is disclosed. The dispensing system includes a plate defining a first surface, a second surface opposite the first surface in a first direction, and at least one slot that extends through the plate from the first surface to the second surface, and an actuator assembly that contains a piezoelectric element and is operatively coupled to the needle. The dispensing system also includes at least one fastener that extends through the actuator assembly and the at least one slot, where the at least one fastener is configured to selectively engage the plate such that 1) in a disengaged configuration, the at least one fastener is movable within the slot and the actuator assembly is movable relative to the plate, and 2) in an engaged configuration, the at least one fastener is not movable within the slot and the actuator assembly is not movable relative to the plate such that a stroke length of the needle is adjusted.

Abstract: The invention relates to an electric fluid heating device (1) comprising: at least one fluid inlet (7), at least one fluid outlet (11), at least one heating element (13), at least one first temperature sensor (21) for measuring the temperature of said at least one heating element (13), and a control module (15) of the at least one heating element (13). According to the invention, the device (1) comprises at least a second temperature sensor (23) for measuring the temperature of the fluid at the at least one outlet (11), and the control module (15) comprises at least one processing means (17, 19, 35) for: using the temperature information (T21, T23) from the temperature sensors (21, 24), and for generating a command for the at least one heating element (13) according to the temperature information (T21, T23). The invention also relates to an associated heating circuit and method for managing the temperature.

Abstract: An electrical heating device for a motor vehicle has a housing which encloses a circulation chamber, The housing has inlet and outlet openings for a medium to be heated which communicate with the circulation chamber. An electrically insulated PTC element projects into the circulation chamber and is electrically conductively connected to conductor elements leading to connections of different polarity, The housing forms a connection chamber in which the connections to the PTC element are electrically connected. The connection chamber and the circulation chamber are separated from one another and are sealed against each other. A flat tube is curved in a U-shape for a good heat discharge. The flat tube has opposite legs which each contain at least one PCT element and against which rests at least one heat-emitting element which is exposed in the circulation chamber.

Abstract: Provided is a coolant heater, and more particularly, is a coolant heater capable of minimizing a mounting space and weight by integrating the coolant heater and a water pump with each other and improving a cooling effect of the coolant heater and a controller for controlling a coolant transporter.

Abstract: An electrical heating device (1) includes a housing (2, 102) having a fluid inlet (3) for the intake of a fluid to be heated into the housing (2, 102) and having a fluid outlet (4) for the discharge of the fluid from the housing (2, 102). A flow channel (5) for the fluid is formed between the fluid inlet (3) and fluid outlet (4), and at least one heating instrument (6, 105, 205) extends into the flow channel (5) in the housing (2, 102). This heating instrument has a sleeve (7, 207) that surrounds an interior of the heating instrument (6, 105, 205) in a fluid-tight way. At least one heating element (8, 208) is arranged in the sleeve (7, 207), and at least one sensor element (9, 109, 209) is arranged in the sleeve (7, 207) for monitoring the temperature of the at least one heating element (8, 208).

Abstract: A cooling water heating apparatus includes: a housing having an inlet through which cooling water flows in at a first side and an outlet through which cooling water flows out at a second side; a sheath heater housed in the housing and electrically connected to an outside through an electric circuit to heat the cooling water in the housing; and an overheat preventing device housed in the housing to be submerged under the cooling water in an upper side of the housing in a gravity direction, the overheat preventing device having a positive temperature coefficient (PTC) device connected in series to the electric circuit of the sheath heater to allow the PTC device to control energization of the sheath heater.

Abstract: A particle measuring apparatus includes a light source configured to irradiate a gas with light, a first optical detection unit configured to detect an intensity of reflected light from particles contained in the gas, and configured to output a first parameter value corresponding to the intensity of the reflected light, and a storage unit that stores first data indicating corresponding relationships between first parameter values particle components. The particle measuring apparatus further includes a calculation unit configured to compare the first parameter value transmitted from the first optical detection unit with the first data transmitted from the storage unit to determine a component of the particles contained in the gas.

Abstract: An infrared heat lamp (200) includes a heating element (214) wound about and supported by an inner tubular member (224) and an outer tubular member (202) enclosing the inner tubular member (224) and heating element (214). The outer tubular member (202) includes an open first end (204) having a flange member (212) defined along an outer periphery thereof and a dome-like second end (206). The infrared heat lamp (200) further includes a base member (230) having first and second discrete portions (232, 234) secured to one another by a fastener (238) and retaining the flange member (212) of the open first end (204) of the outer tubular member (202) therebetween.

Abstract: A heating apparatus which is assembled by inserting a columnar heating wire heater 2 into a hole 30 provided in a case 3, and heats cooling water introduced into the case 3 by the heating wire heater 2, wherein the heating wire heater 2 is inserted into boss portions 42 and 43 provided in the case 3, both end portions are supported by O-rings 50 disposed between inner peripheral walls of the boss portions 42 and 43 and an outer peripheral wall of the heating wire heater 2, a gap 45 for passing the cooling water is formed along an outer peripheral surface of the heating wire heater 2 between the two boss portions 42 and 43 within the case 3, and a tapered portion 60 and a rounded portion 61 are formed on an end portion on an insertion-direction distal end side of the heating wire heater 2.

Abstract: The invention relates to a device for thermally conditioning a fluid for a motor vehicle, comprising: at least one heat module comprising a core and a shell defining a circuit for guiding the fluid that is to be heated or cooled between the core and the shell, a fluid inlet box (209a) and a fluid outlet box, the inlet box (209a) having at least one fluid inlet canal (225a, 225b) communicating with the fluid guiding circuit. According to the invention, the fluid inlet canal (225a, 225b) has at least one substantially curved portion which is configured to generate a swirling movement in the fluid. The invention also relates to a heating and/or air conditioning apparatus comprising such a device.

Abstract: The invention relates to a electric heating device for heating fluids, comprising at least one heating resistor, a screw, which defines a helical flow channel, and a tube housing, which surrounds the screw. In accordance with this disclosure, the screw has a core in which the at least one heating resistor is arranged.

Abstract: A heating device (100, 200), which can be arranged at an object (101, 201) to be heated, especially an injection molding die, has an inner jacket surface (111, 211) and an outer jacket surface (112, 212), with a heating element (105, 205) and with a thermocouple (103, 203). The thermocouple (102, 203) has at least one positioning section, in which the cross section of the thermocouple (103, 203) deviates in at least one direction of the cross-sectional area from the cross section of at least one section of the thermocouple (103, 203) located adjacent to this positioning section. The heating device (100, 200) has at least one device for locking this positioning section against displacement in and/or opposite to the direction in which the thermocouple (103, 203) extends.

Abstract: An aircraft drain/fill fitting includes a housing adapted for being fitted into an opening between an aircraft interior and an aircraft exterior. The housing has an interior housing segment fluidly coaxially communicating with an exterior housing segment to define a liquid flow path therethrough, and a heater for applying heat to the interior housing segment. A hollow insert element is positioned in the interior housing segment in heat transfer contact with an inner wall of the interior housing segment. An elongate heat transfer probe is positioned in heat transfer contact with the hollow insert element and extends into the exterior housing segment to reduce the incidence of freezing of liquid in the exterior housing segment.

Abstract: An integrated in-line heater for a liquid food or beverage preparation machine, in which liquid is circulated through the heater and then guided into a brewing chamber for brewing a food or beverage ingredient, for instance within a pod or capsule, supplied into the brewing chamber. An upstream part of the brewing chamber may be formed by the heater. One or more electric components may be incorporated into the heater and rigidly connected to a printed circuit board. The heater may have a tubular inner core that is eccentric with respect to a tubular or prismatic outer member which form together a helicoidal heating chamber of variable cross-section.

Abstract: A water boiling device includes a heat tank unit received in a machine body, a high frequency induction heater, and a heat pipe unit. The heat tank unit includes first and second heating tanks in communication with each other. Outside water can flow into the first and second heating tanks. The high frequency induction heater includes a heat pipe induction coil and first and second induction coils. The heat pipe unit includes first and second heating pipes. An upper section of each heating pipe is received in one of the heating tanks, and a lower section of each heating pipe extends out of the heating tanks and is inserted into the heat pipe induction coil. The first and second heating tanks will heat up to heat the water in the first and second heating tanks when a high frequency current is passed through the heat pipe induction coil and first and second induction coils.

Abstract: A device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping. The heated piping comprises a fluid conveying pipe including a thermoplastic elastomer, a heating element arranged inside the conveying pipe, and an anti-abrasive layer. Preferably, the conveying pipe is made of a polyolefinic matrix based thermoplastic elastomer in which it is intimately dispersed a dynamically vulcanized and EPDM based elastomeric phase.

Abstract: The present invention is related to a heated garden hose that has a flexible hose with an inlet and an outlet. The garden hose has an inlet coupler and an outlet coupler. A heating cable coupler is connected between the inlet and the outlet of the flexible hose. A heating cable has a first end with an electrical plug and extends through the heating cable coupler into the interior of the flexible hose. The heating cable is free floating inside the flexible hose. A thermostat, attached to the exterior portion of the heating cable, controls the heating cable and is designed to turn the heating cable off just above the freezing temperature of water. A clip is inserted into the flexible hose near the outlet to hold the heating cable inside of the flexible hose.

Abstract: A heat isolation cover for a heat blower comprises a casing having a receiving space; the casing being installed with a protection sleeve, a heat resistance unit and a fan and motor set; one end of the protection sleeve being formed as a converge opening portion; the heat resistance unit having an annular heat isolation unit and a heat emitting unit installed on the heat isolation unit; one end of the heat resistance unit resisting against an inner surface of the guide edge of the protection sleeve and another end thereof being combined to the buckling groove of the casing; and the fan and motor set being installed to a rear end of the heat resistance unit; the actuation of the fan and motor set being controlled by an electronic circuit; and the fan and motor set generating wind to blow the heat resistance unit.

Abstract: A cartridge heater, especially a compressed cartridge heater (1) has at least one heating coil (8, 9), which is arranged exposed in a metallic tubular body (2) and is embedded in a granulated insulating material. The ends of heating coil portions (8, 9) are provided with terminals (7) projecting from the tubular body (2). To make it possible to manufacture such a cartridge heater with minimal effort in terms of labor and material, a flat insulating plate (10) coordinated in its width with the internal diameter of the tubular body (2) is provided as the carrier. The heating coils (8, 9) extend along the two flat sides of the insulating plate (10) and the two heating coils (8, 9) are connected to one another by a coil section (12, 12?), which is led around a deflecting edge (27) of the insulating plate (10).

Abstract: An electrical resistance heater element has a metal tube containing an electrical resistance coil that is electrically insulated from the metal tube by magnesium oxide powder, the coil being bonded to a conductor pin that protrudes from an open end of the tube. The powder is sealed against moisture by placing at least the open end of the tube within a chamber and immersing the open end within liquid silicone. A gas is pumped into the chamber to pressurize the silicone sufficiently to cause some of it to encroach into the powder through the open end of the tube. The heater element is installed within a heat exchanger with the silicone remaining uncured.

Abstract: An object of the present invention is to provide a highly-reliable combined heater. Heater 1 includes hot water pipe 1a for allowing hot water to flow therethrough, and metal pipe 1b that is coaxial with hot water pipe 1a and that is secured in contact with an inner peripheral surface of the hot water pipe.

Abstract: A heat isolation cover for a heat blower comprises a casing having a receiving space; the casing being installed with a protection sleeve, a heat resistance unit and a fan and motor set; one end of the protection sleeve being formed as a converge opening portion; the heat resistance unit having an annular heat isolation unit and a heat emitting unit installed on the heat isolation unit; one end of the heat resistance unit resisting against an inner surface of the guide edge of the protection sleeve and another end thereof being combined to the buckling groove of the casing; and the fan and motor set being installed to a rear end of the heat resistance unit; the actuation of the fan and motor set being controlled by an electronic circuit; and the fan and motor set generating wind to blow the heat resistance unit.

Abstract: The invention relates to a device for temperature controlled heating of a fluid line which comprises a jacket conduit made of a flexible material and provided with a longitudinal slot across which a fluid line is insertable into a cavity of said jacket conduit, at least one heating element extending in longitudinal direction of said jacket conduit and one temperature sensor each arranged in a first and a second section of the jacket conduit, wherein at both sides of a longitudinal center plane (M) extending through the longitudinal slot (5) the jacket conduit (1, 21) is provided with at least one circumferential section (7, 8, 22, 23) having a plurality of continuous longitudinal channels (9, 9?, 10, 10?, 13, 13?, 13?, 26, 26?) and/or intermittent longitudinal channels (13, 13?, 13?) adapted to accommodate at least two heating elements (11) and/or at least one temperature sensor (14, 15), said continuous longitudinal channels (9, 9?, 10, 10?, 13, 13?, 13?, 26, 26?) and/or intermittent longitudinal channels (1

Abstract: A dehumidification apparatus including an outer tubular container (2) closed at its ends, a first (5) and a second (9) transverse grids located inside the tubular container (2), one grid element being spaced from the other and from a respective adjacent end of the tubular container (2) and delimiting a receiving space therewith, a mass of molecular sieves (MS) located in the receiving space, heating elements (19) in the tubular container (2), and first and second openings (4, 16) for communication of the interior of the container with the outside, characterised in that it comprises an inner tubular jacket (6) extending from at least the first grid (5) for a distance greater than that between the first (5) and the second (9) grid, thereby shaping the receiving space for the sieves (8) as an annular gap and providing a projecting section (6a) extending from the second grid (9); and an annular partition (17) between the outer container (2) and the inner jacket (6) at the projecting section (6a) of the inner jack

Abstract: A water preheating connection piece (6) including a connection body including a water flow channel (6a) and a bore hole (7), at least one heating rod (1) having an internal heating element and at least one regulating element for insertion into the bore of the connection body, the at least one heating rod projecting into the water flow channel (6a), the heating rod (1) including a connection pole (3) that extends from the heating rod (1) whereby the connection pole is electrically insulated from the heating rod (1). The heating rod (1) does not include external threads and the bore hole of the connection body does not include internal threads so as to permit the heating rod (1) to be press-fit therein.

Abstract: A system for stripping an optical fiber includes a source of air and means for generating very short bursts of air. A heater heats the bursts of air to a temperature sufficient to remove the outer coating from an optical fiber, while maintaining the air isolated from the heat source. A single burst of heated air removes the outer coating of an optical fiber, within less than about one second. A series of closely spaced bursts or a prolonged burst of heated air may be used to remove an expanded length of fiber coating. Stripping may include translation of the fiber or the heater or portions thereof. The stripper may be configured to strip several loaded fibers or a single fiber.

Abstract: A water preheating connection piece (6) including a connection body including a water flow channel (6a) and a bore hole (7), at least one heating rod (1) having an internal heating element and at least one regulating element for insertion into the bore of the connection body, the at least one heating rod projecting into the water flow channel (6a), the heating rod (1) including a connection pole (3) that extends from the heating rod (1) whereby the connection pole is electrically insulated from the heating rod (1). The heating rod (1) does not include external threads and the bore hole of the connection body does not include internal threads so as to permit the heating rod (1) to be press-fit therein.

Abstract: A water jacket assembly for an instantaneous gas fired water heater, the assembly including pressed profiled plates made of copper or copper coated steel, one plate being the inverted image of the other, said plates being placed together in pairs, the pairs of plates being arranged in a parallel array to form a heat exchanger, the heat exchanger being bordered by a water jacket comprising overlapping side and end panels of copper or copper coated steel attached to the array of plates, the assembly being fused together to define a combustion chamber with discrete combusted gases and water passages within said assembly.

Abstract: An apparatus for sealing an end portion of a hot-water tube in which electric heating wires are inserted enables electric heating wires in hot-water tubes to extend through to the outside, while preventing leakage of water from the hot-water tubes. A plug (3) is screw-connected to the end portion (1a) of a hot-water tube (1). A silicone cock (4) of an elastic material, through which coated electric heating wires (2) of the hot-water tube are placed, is inserted into the cylinder-like concave (3b) of the plug (3). A crown nut (5) is screwed onto the plug (3), pressing the cock (4) to enhance the water-tightness of the end portion of the hot-water tube and to allow the electric heating wires to be placed effectively from inside to the outside of the hot-water tube.

Abstract: A device for rinsing sample processing components of an analytical instruments including an inlet coupleable to a fluid source, an outlet coupleable to sample processing components of an analytical instrument, and a fluid reservoir between the inlet and outlet. The device includes a heater coupled to the fluid reservoir and the fluid reservoir includes at least two reservoir chambers connected in series and separated by a restricted passageway.

Abstract: A self-cleaning water heater element is provided. The water heater element is plated with a layer of gold such that the gold surface has a low surface roughness. The smooth gold surface inhibits scale formation on the water heater element. The gold-plated smooth-surfaced water heater element may be manufactured by coating a standard water heater element with an adhesion layer, electroplating a layer of bright nickel on the adhesion layer, and electroplating a gold layer on top of the bright nickel layer.

Abstract: A fluid heater has a fluid pipe through which a fluid flows. A radiant heating element is enclosed in a quartz mantle. The fluid pipe is concentrically arranged about the quartz mantle. A first temperature sensor is positioned at a section of the outer circumference of the fluid pipe opposite the heating element.

Abstract: A scale-inhibiting water heater element is provided. The water heater element is coated with a diamond-like coating which has low surface tension to keep scale from forming, and is thermally conductive, which helps prevent overheating. The scale-inhibiting water heater element may be manufactured, for example, by coating a standard water heater element with an amorphous silicon adhesion layer, and then applying a diamond-like coating using a pulsed-glow discharge process.

Abstract: A water heater assembly (20) is disclosed. The water heater assembly includes a tubular housing (22) having an inlet, an outlet, and a channel extending between the inlet and outlet for passing water through the water heater assembly. A plurality of heating element conduits (102a-102e) extend between the inlet and outlet. The water heater assembly also includes a plurality of heating elements (100a-100d) removably disposed within the conduits and extending between the inlet and outlet. The heating element housings surrounding the heating element for sealing the heating element from direct contact with the water and permitting heat transfer between the heating elements and the water passing adjacent the heating element housing. The water heater assembly also includes cylindrical first and second end caps (62 and 62b). One end cap being releasably fastened to one of either the inlet or outlet of the housing. Each end cap has a sealed end and a hole (76) extending through and off the center of the sealed end.

Abstract: A heating element comprising:a body having a heating section;heating means inserted in or adjacent to said body, said means capable of generating heat, having a heat flux Q.sub.1 at a temperature T.sub.1 ; andheat transfer and concentration means capable of transferring said heat from said heating means to said heating section and concentrating said heat in said section such that said section has a heat flux Q.sub.2 at a temperature of T.sub.2, where Q.sub.2 is greater than Q.sub.1 and where T.sub.2 is equal to or less than T.sub.1.

Abstract: A machine for circulating cooling water through manufacturing process equipment includes a combination pump and heat exchanger assembly. The machine has a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tanks, one of them "the suction tank" communicating through the case with the pump impeller intake, and the other "the discharge tank" communicating with the impeller discharge. The tanks are constructed to function as heat exchangers, and they are readily and removably secured to the pump case by threaded fasteners and are sealed therein by compression seals. The discharge tank has electrical heating elements. The suction tank has a motor-operated modulator valve precisely fixed thereon, so as to enable discharging excessively warm water from the process to drain while cool make-up water from city water supply is admitted through the suction tank to the pump.

Abstract: A liquid delivery system for delivery of an initially liquid reagent in vaporized form to a chemical vapor deposition reactor arranged in vapor-receiving relationship to the liquid delivery system.

Abstract: A electric heating apparatus for de-icing pipes includes a flexible hose with a closed bottom end and a top end. The hose has a pair of insulated wires situated within an interior of the hose and a plug coupled to the top end of the hose. The plug has a pair of contacts connected to the wires and adapted to be inserted within a conventional electrical receptacle for providing electrical power to the wires. By this structure, the hose is adapted to be passed within a pipe connected to a source of water. Next provided is a thermostat having an input connected to the insulated wires and is adapted to allow the transfer of power to an output thereof upon the detection of a temperature below a predetermined degree. The thermostat is situated within the interior of the hose adjacent the bottom end thereof. Also included is a heating coil formed within the hose, wherein the coil is connected to the output of the thermostat for radiating heat upon the receipt of power.

Abstract: An apparatus for heating rooms with electrically heated hot water tube, and a method therefor are disclosed. The apparatus for heating rooms with electrically heated hot water tube and a method therefor are constituted such that an electrically heating line made of copper and having a diameter of 0.3-0.5 mm is inserted into a hot water tube throughout the entire length thereof, so that the heating effect of the copper wire would replace the boiler and the hot water circulating means, thereby heating the rooms with a simple structure and with a convenience without loss of thermal energy.

Abstract: A fluid heating apparatus in which a heating unit (2) and a fluid supply adjusting unit (3) are accommodated in a casing in a manner separated from each other and connected through a flow-in tube (8) and a flow-out tube (9) and the fluid supply adjusting unit (3) is arranged vertically upward and downward on the side of the heating unit (2).

Abstract: A catalyst 1 is provided in a gas passage 4 for communicating between a gas flow-in unit 12 and a gas flow-out unit 13, and the catalyst 1 is heated by a heater 2, and a temperature sensor 3 for detecting the temperature of the heater 2 is provided inside the heater 2. By feeding power to the heater 2, the wall temperature of the heater 2 is raised to heat the catalyst 1, and then malodorous gas containing odor substances is passed in from the gas flow-in unit 12. The malodorous gas passes through the catalyst 1 in the gas passage 4 to be oxidized to be harmless and odorless, and is discharged from the gas flow-out unit 13.

Abstract: A tubular high efficiency, non-contaminating fluid heater includes an elongate tubular member having a coil-like configuration and a sidewall which defines an elongate tubular chamber formed from an inert material through which fluid is adapted to flow. The tubular member includes an inlet and an outlet and a plurality of elongate electrical resistance heaters sheathed with the same inert material are disposed in said tubular chamber for heating the fluid as it flows through the tubular chamber.

Abstract: An infrared electric liquid heater includes an elongated emitter unit contained within an outer containment tube to define an annular volume through which the to-be-heated water flows. The emitter unit includes a tubular silica-composition envelope that comes into direct contact with the water to be heated. A tungsten filament is contained within the envelope and is supported along the longitudinal axis by spaced-apart filament supports. The envelope is fabricated from a silica composition discovered to provide unique structural properties; the envelope drawn from a melt (by volume) of 99.88% to 99.94% pure silica (SiO.sub.2), 0.04% to 0.08% crystalline sodium borax (Na.sub.2 B.sub.4 O.sub.7.10H.sub.2), and 0.2% to 0.04% hydroxide of potassium (KOH). This composition has demonstrated a structural strength that allows for a high efficiency in-line, instant-on heater using only a single silica wall separating the electrically energized filament from the liquid being heated.

Abstract: An apparatus (10) for purifying gas distribution systems has a gas inlet (12) and a gas outlet (14) for connection to gas distribution lines (54). A housing (22) encloses a resistance heater (24) and a particle filter (26) for the gas. The resistance heater (24) is connected to the gas inlet (12) and the particle filter (26) is connected between the resistance heater (24) and the gas outlet (14). The resistance heater includes a sealed tube (26) defining a gas plenum (28). A resistance heater element enclosed in a cylindrical Inconel alloy shell (30) is centrally disposed in the sealed tube (26). A spiral ridge (32) winds around the shell (30) to define a spiral path for gas flowing through the plenum (28). The spiral ridge (32) has a narrower pitch near the gas inlet (12) and a wider pitch moving toward the filter (26) end of the plenum (28).

Abstract: A combination pump and heat exchanger assembly in a manufacturing process temperature controller uses a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tubes, one of them communicating through the case with the pump impeller intake and the other with the impeller discharge. Closed circuit and open circuit versions are shown. In both types, the tubes are constructed to function as tanks, at least one being a heat exchanger unit, and they are readily and removably secured to the case by threaded fasteners and are sealed therein by compression seals. The heat exchanger tubes employ electrical heating elements or chilled liquid piping units therein. A controller including a microcomputer responds to temperature of liquid pumped from the assembly through a process to be temperature controlled, and returned to the assembly, to control an electric heater and/or a motor-operated modulator valve discharging to drain while cool make-up water is admitted.

Abstract: This liquid fuel vaporizing apparatus is so designed that liquid fuel is vaporized by a heating plug disposed in a tubular body when the temperature in a combustion chamber is low while it is vaporized by a radiant heat of the combustion chamber received by heat-receiving fins provided in the outer-peripheral part of the tubular body when the temperature in the combustion chamber is high. Particularly, an open-cellular member having intercommunication porosity which has numerous intercommunicating pores being excellent in heat conducting properties is disposed in a fuel passage in the tubular body, and the heat transfer area of said member is increased to make uniform the state of reception of heat from the heat-receiving fins.

Abstract: A heating apparatus comprises a closed vessel having thermally conducting walls and containing a gas that is heated by one or more electrical heating elements in the vessel. The vessel is received in a duct through which air is blown. The air is heated by the heat transferred to the vessel walls by the gas in the vessel. Pressure and thermostatic switches in the circuit of the heating element communicate with the gas in the vessel and provide a double-safety, over-temperature power shut-off. The heating apparatus may be used to blow hot air into water in a tub through hoses leading to inlet openings or to an air distribution mat placed in the tub. The bubbles of hot air heat the water and produce strong agitation. A special raft receives the air distribution mat, which heats water in the raft by bubbling hot air through it. The heating apparatus can also be used for space heating, warming and drying towels and clothes, hair drying and grooming animals.

Abstract: A combination pump and heat exchanger assembly uses a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tubes, one of them communicating through the case with the pump impeller intake and the other with the impeller discharge. The tubes are constructed to function as heat exchanger units and are removably secured to the case by threaded fasteners and are sealed therein by compression seals. The heat exchanger tubes may employ electrical heating units or chilled liquid piping units therein.

Abstract: A heater for heating dionized water and other liquids which may be very aggressive solvents, the heater constituting one or more heating units having an external cylindrical housing of PTF Teflon or similar material and closed at each end with headers of similar material which contain ports for ingress and egress of the fluid. A concentric inner tubular member of polysilicon surrounds one or more infra red heating elements which, when energized, radiate intense heat into the chamber within the inner tube. This tube acts to confine and reflect the heat back into the chamber thereby heating the liquid to a high temperature very quickly. Relatively little heat passes through the wall of the inner tube to the surrounding chamber. Liquid is directed into the outer chamber, across the length of the inner tube, through a passage at the opposite end and into the inside chamber. The flow across the other surface of the inner tube is warmed somewhat but insufficiently to damage the outer tube.