3552results about How to "Reduce heat transfer" patented technology

Methods and apparatus for accommodating thermal expansion of a showerhead. In a first aspect of the invention, the showerhead is movably supported by resting a rim of the showerhead on a support shelf. In a second aspect, the showerhead is suspended from the chamber wall by a plurality of hangers that are connected to the showerhead, the chamber wall, or both by pins that slide within slots so as to permit the hangers to slide radially to accommodate thermal expansion of the showerhead in the radial direction. In a third aspect, the showerhead is suspended from the wall of the vacuum chamber by a plurality of rods or flexible wires. In a fourth aspect, the showerhead is connected near its perimeter to a second material having a greater thermal expansion coefficient than the showerhead. In a fifth aspect, a heater is mounted behind the showerhead to reduce the termperature differential between the top and bottom surfaces of the showerhead or to reduce heat transfer from the workpiece to the showerhead.

Methods and apparatus for accommodating thermal expansion of a showerhead. In a first aspect of the invention, the showerhead is movably supported by resting a rim of the showerhead on a support shelf. In a second aspect, the showerhead is suspended from the chamber wall by a plurality of hangers that are connected to the showerhead, the chamber wall, or both by pins that slide within slots so as to permit the hangers to slide radially to accommodate thermal expansion of the showerhead in the radial direction. In a third aspect, the showerhead is suspended from the wall of the vacuum chamber by a plurality of rods or flexible wires. In a fourth aspect, the showerhead is connected near its perimeter to a second material having a greater thermal expansion coefficient than the showerhead. In a fifth aspect, a heater is mounted behind the showerhead to reduce the temperature differential between the top and bottom surfaces of the showerhead or to reduce heat transfer from the workpiece to the showerhead.

A light emitting device has a light emitting diode (LED) encapsulated by an encapsulant member. The encapsulant member includes a luminescent material, such as a phosphor, and a thermal insulating material. The thermal insulating material effectively insulates the luminescent material from the heat generated by the LED. A thermal conducting material is desirably placed in thermal contact with a back side of the LED to assist heat dissipation. The encapsulant member may be formed in two separate layers with the luminescent material forming a luminescent layer, and the thermal insulating material forming a thermal insulation layer disposed between the luminescent layer and the LED.

The present invention relates to an apparatus and method for rapid flash-like volatilization of high and low vapor pressure components from liquid or solid emanators which is in contact with a point or localized heat source. Vaporization is promoted by a geometrically small electrically resistive heating element with variable activation for pulsed or cyclic heating of an emanating surface containing the volatile components. The apparatus is primarily directed towards the treatment of residential air for fragrancing, odor elimination, treatment of insects or pests, air sanitization, air and surface antibacterial or antimicrobial treatment, or other ambient air or surface modification by way of gas or vapor distribution.

A metallic leadframe for use with a semiconductor chip intended for operation in a changing magnetic field comprises a chip mount pad having at least one slit penetrating the whole thickness of the pad and substantially traversing the area of the pad from one edge to the opposite edge. This slit is wide enough to interrupt electron flow in the pad plane, but not wide enough to significantly reduce thermal conduction in a direction normal to the pad plane, whereby the slit is operable to disrupt eddy currents induced in the pad by the changing magnetic field.A semiconductor device intended for operation in a changing magnetic field, comprising a leadframe with a chip mount pad having at least one slit in a configuration operable to suppress eddy currents induced in the pad by the changing magnetic field; an integrated circuit chip, having an active and a passive surface; the passive surface attached to the mount pad by a polymeric material; and the active surface having a Hall structure including current and voltage terminals integrated into the circuit, whereby the changing magnetic field can be measured without diminution by said eddy currents.

A composition for a Coating System (paint) which forms an insulating material being designed to both reflect infrared radiation and have reduced thermal conductivity. The coating system may be either a single Thermal Coating or may be a Thermal Coating used in combination with a Thermal Primer. The Thermal Coating is formulated using conventional techniques and a resin used in paint manufacture, but utilizes primary pigments and extender mineral pigments which preferentially reflect in the infra red area of the solar spectrum. A method of characterizing particulate materials for their infra red reflectivity is described, which provides a means for preferential selection of particulate additives based on their relative visible light and infrared reflectivity. Additionally the incorporation of hollow micro-spheres is desired to reduce thermal conductivity. The Thermal Primer is designed to provide adhesion between the Thermal Coating and the substrate on which it is applied and uses conventional techniques to achieve those properties. However it has been found advantageous to incorporate hollow micro-spheres with low thermal conductivity, such as glass, ceramic or polymeric micro-spheres and / or an extender pigment with low thermal conductivity such as calcined clay to further reduce heat flow through the Coating System.

A double temperature sensor is provided for measuring a near-surface temperature of the ambient air and the temperature of the skin surface (9). A heat flux insulation block (4) is made of an insulation material in one piece as a housing. Two temperature sensor elements (2, 3) with respective electric connections (6) belonging to them are arranged in the heat flux insulation block (4) one on top of another at spaced locations from one another and near the surface.

An LED light bulb includes a light transparent shell, a power receiving base, a heat sink and a coupling holder located between the light transparent shell and power receiving base, at least one light source baseboard held in the light transparent shell, and a power conversion board electrically connected to the light source baseboard and power receiving base. The heat sink has a housing chamber to hold the power conversion board and an annular coupling wall surrounded to form an area to couple with the light source baseboard. The light source baseboard has a contact surface on the circumference to form compact coupling with the coupling wall so that the light source baseboard is securely held on the heat sink without deforming at high temperature to provide improved heat conduction capability.

An extruded blow molded bottle comprises a neck portion and a body portion. The body portion comprises a first inner layer and a second layer. The first inner layer comprises a first material selected from a group consisting of polyester, phenoxy type thermoplastics, phenoxy-polyolefin thermoplastic blends, and combinations thereof. The second layer comprises a second material selected from a group consisting of virgin PET, recycled PET, PETG, foam, polypropylene, polyester, polyolefins, phenoxy type thermoplastic, phenoxy-polyolefin thermoplastic blends, regrind scrap materials, and combinations thereof. The second material is different from the first material.

A composition for promoting the formation of clots in blood comprises a binder and a zeolite disposed in the binder, the zeolite having an adjusted calcium content. A method of forming a blood-clotting composition comprises the steps of providing a zeolite, combining the zeolite with a binder, and adjusting a calcium content of the zeolite to have an amount of calcium such that upon application of the composition to a wound, a heat of hydration is reduced and thereby heat transferred to the wound is reduced. A method of clotting blood flowing from a wound comprises the steps of applying a zeolite to the wound and maintaining the zeolite in contact with the wound for a predetermined amount of time. The zeolite preferably has an adjusted calcium content and is capable of producing a controllable blood clotting effect on the wound.

A centrifugal air / oil separation system communicates with bearing cavities of the engine and substantially isolates separated oil from contacting the gearbox.

A thermoelectric structure and device including at least first and second material systems having different lattice constants and interposed in contact with each other, and a physical interface at which the at least first and second material systems are joined with a lattice mismatch and at which structural integrity of the first and second material systems is substantially maintained. The at least first and second material systems have a charge carrier transport direction normal to the physical interface and preferably periodically arranged in a superlattice structure.

Embodiments of the invention provide electrochemical cells for use in implantable medical devices. Embodiments of the invention provide an anode or cathode with a connection tab or tabs that extend a sufficient distance from separation material between the anode and cathode to reduce the heat transferred back to the separation material when the tab is electrically connected to the battery case, cover, or feedthrough pin.

A pressure-detection method and detection device for electric pressure cooker is used for detecting continuously and accurately to control the pressure in the electric pressure cooker. The method comprises that a strainometer is provided on the periphery of a cooking pot of the electric pressure cooker, and a transmission arm is utilized to sense the expanding amount of the cooking pot and converts the expanding amount into a displacement, then makes the elastomer of the strainometer distorting; the distorting elastomer generates subsequently a controllable electric signal due to the electric characteristic of a sensitive foil, and the controllable electric signal is delivered to a central control unit, then control signals and display signals are outputted by the central control unit. The detection device comprises a strainometer, a transmission arm, a central control unit and the like. The strainometer is provided on the periphery of the cooking pot of the electric pressure cooker and is fixed by a proper way. The present invention can be used not only to detect and control the pressure of the electric pressure cooker and can be used for the household appliances also, such as electric iron, electric water heater and the like, the temperature and pressure of which need to be detected.

An outer surface of a cold-storage container (or a refrigerant tube) is provided with a plurality of protrusion portions or recess portions. A cooling air passage, in which air flows to cool a space to be cooled in a cold storage time and in a cold release time of the cold storage material, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container bonded to the refrigerant tube. The refrigerant tubes and the cold storage container form therebetween a cold-storage side air passage by the protrusion portions or the recess portions, such that air flows in the cold-storage side air passage separated from the cooling air passage. For example, the cold-storage side air passage is provided with a slanting space that causes condensed water or ice generated in the cold storage time to be drained along the cold-storage side air passage.

A multi-use landscape light fixture is provided. The landscape light fixture includes a main housing, a lens assembly, a light source mount assembly and a base. The main housing has an upper flanged opening and a lower flanged opening. The upper opening is used for mounting a lens or the like using the lens ring. The lower opening has a flange used for mounting the base. The base has an upper portion that is inserted into the bottom opening of the main housing and a lower flanged bulkhead that mates with the flange of the main housing. Once mated, the flanged bulkhead forms a watertight seal with the lower flange of the main housing. The base includes power and signal connectors and separate compartments for ballast circuitry and junctions. The landscape light fixture may be mounted above, below or at any level in between grade.

Patterned thin films comprise regions of relatively low thermal conductivity material separated by regions of relatively high thermal conductivity material. The low thermal conductivity regions may be provided in the form of cylinders or cuboids which are arranged in a continuous matrix of the high thermal conductivity material. The thin film may be used as thermal control layers in data recording media such as heat assisted magnetic recording media.

The invention relates to heat insulating and energy saving coating used for the vehicle, and the preparation method thereof. The invention takes organic resin film forming material as the main material, the coating at least includes infrared reflection pigment, hollow ceramic micro-spheres and silicon dioxide aerogel, an organic resin film having low sunlight absorption rate is formed in the coating through the organic resin film forming material with high transparency, the visible light and the near infrared ray in the sunlight are reflected through the infrared reflection pigment, the rutile type titanium dioxide and the hollow ceramic micro-spheres, and simultaneously a compact vacuum layer and an inert gas layer are formed on the surface of a coated object through the hollow ceramic micro-spheres and the silicon dioxide aerogel, so as to effectively isolate the radiant heat of the sun, and to reduce the heat conduction of air, and finally the heat insulating and energy saving coating used for the vehicle is formed, which not only can effectively reflect the energy in the sunlight, but also can effectively isolate the radiant heat of the sun and reduce the heat conduction of air, and simultaneously has good weather resistant performance, chemicals resistant performance, mechanical property and decorative property.

A plastic discharge tube extends through a swaged cap bore through a metal swaged cap. A conical cap portion of the metal swaged cap is pressed into a retainer ring passage through a metal retainer ring. A swage surface in the retainer ring passage swages the conical portion of the metal swaged cap thereby fixing the position of the plastic discharge tube in the swaged cap bore and locking the swaged cap in the retainer ring passage. The plastic discharge tube is inserted into a steel injection tube fixed to a soil cutting knife. A ring bottom positioning surface contacts and injection tube upper end of the injection tube. A delivery hose is telescopically received on a plastic discharge tube retainer assembly and the steel injection tube. Hose clamps clamp the delivery hose to the retainer assembly and the injection tube.

A small cooking appliance comprises a bottom housing, a top housing, and a ring assembly. The bottom housing has a top surface that forms a bottom cooking surface of the appliance. The top housing has a bottom surface that forms a top cooking surface of the appliance. The top housing is movably attached to the bottom housing and moveable between a closed position and an open position. The ring assembly is positionable between the top and bottom cooking surfaces when the top housing is in its closed position. The ring assembly comprises a top ring, a bottom ring, and an optional center cooking plate. The center cooking plate is movable between (i) a closed position in which a space defined by the ring assembly is divided into top and bottom cooking cavities and (ii) an open position.

A plurality of pulses each having relatively low energy are consecutively applied to a subject fuse to cause breakdown, wherein the total energy of pulses is set in light of a prescribed breakdown threshold, which is calculated in advance. The subject fuse has a pair of terminals and an interconnection portion that is narrowly constricted in the middle so as to realize fuse breakdown with ease. A pulse generator generates pulses, which are repeatedly applied to the subject fuse by way of a transistor; then, it stops generating pulses upon detection of fuse breakdown. Side wall spacers are formed on side walls of fuses, which are processed in a tapered shape so as to reduce thermal stress applied to coating insulating films. In addition, pulse energy is appropriately determined so as to cause electro-migration in the subject fuse, which is thus increased in resistance without causing instantaneous meltdown or evaporation.

A method of forming a sputtering target assembly and the sputtering target assembly made therefrom are described. The method includes bonding a sputtering target to a backing plate at a low temperature. Also described is a method of forming a sputtering target assembly such that a gap is formed between the sputtering target and the backing plate. Also described is a method of forming a sputtering target assembly providing a mechanism to prevent unintended sputtering into the backing plate.

Method and apparatus for improved maskless deposition of electronic and biological materials using an extended nozzle. The process is capable of direct deposition of features with linewidths varying from a few microns to a fraction of a millimeter, and can be used to deposit features on targets with damage thresholds near 100° C. or less. Deposition and subsequent processing may be performed under ambient conditions and produce linewidths as low as 1 micron, with sub-micron edge definition. The extended nozzle reduces particle overspray and has a large working distance; that is, the orifice to target distance may be several millimeters or more, enabling direct write onto non-planar surfaces. The nozzle allows for deposition of features with linewidths that are approximately as small as one-twentieth the size of the nozzle orifice diameter, and is preferably interchangeable, enabling rapid variance of deposited linewidth.

An apparatus and method are disclosed in which ultrasonic vibration is used to assist the degassing of molten metals or metal alloys thereby reducing gas content in the molten metals or alloys. High-intensity ultrasonic vibration is applied to a radiator that creates cavitation bubbles, induces acoustic streaming in the melt, and breaks up purge gas (e.g., argon or nitrogen) which is intentionally introduced in a small amount into the melt in order to collect the cavitation bubbles and to make the cavitation bubbles survive in the melt. The molten metal or alloy in one version of the invention is an aluminum alloy. The ultrasonic vibrations create cavitation bubbles and break up the large purge gas bubbles into small bubbles and disperse the bubbles in the molten metal or alloy more uniformly, resulting in a fast and clean degassing.

The invention relates to a vacuum insulation panel which can be used as an insulator for a refrigerator requiring heat insulation to be provided and also to a refrigerator incorporating such a vacuum insulation panel. The invention particularly relates to an arrangement for preventing convection spaces from being formed where an edge of the vacuum insulation panel is folded back. The vacuum insulation panel includes a core which has an inner film bag in which a flexible inorganic fiber laminate is accommodated, and an outer barrier bag which is made of gas-impermeable film such as metallic foil laminated film and which accommodates the core. The inner film bag includes a welded portion and a ventilation portion. The outer barrier bag has a depressurized interior and has been sealed by welding. An edge of the inner film bag is placed in an edge of the outer barrier bag.