392results about How to "Prevent heat transfer" patented technology

Provided herein are biomedical devices and methods of making and using biomedical devices for sensing and actuation applications. For example, flexible and / or stretchable biomedical devices are provided including electronic devices useful for establishing in situ conformal contact with a tissue in a biological environment. The invention includes implantable electronic devices and devices administered to the surfaces(s) of a target tissue, for example, for obtaining electrophysiology data from a tissue such as cardiac, brain tissue or skin.

In a stage for supporting a substrate, a body, a base plate and a buffer are provided in the stage. The body on which the substrate is positioned includes a plate having a heating electrode for generating heat therein and a tube protruded from a bottom surface of the plate. The body is mounted on the base plate. The buffer is interposed between the base plate and the tube and has a thermal expansion ratio higher than that of the tube of the body and lower than that of the base plate. Accordingly, thermal expansion of the base plate may be absorbed by the buffer and may not have direct effect on the body. Therefore, the body may be prevented from being damaged due to the thermal expansion of the base plate.

A drive unit which uses an electric motor as a power source and has an integrated inverter, with a cooling circuit for the electric motor and the inverter. The drive unit includes a drive unit case, the electric motor housed within the case, and the inverter fixed to the case. A coolant flow passage is provided between the drive unit case and the inverter. The inverter is fixed to the drive unit case through a panel wall, and a partition divides the coolant flow passage into chambers which are coextensive in parallel. As a result, the coolant which flows through the coolant flow passage acts as a two-stage heat shield, barring the heat generated by the electric motor from being transmitted to the inverter.

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.

An intra-aortic balloon pump catheter system (apparatus and method) includes a pumping element for pumping a patient's blood and one or more heat exchange for exchanging heat with the patient's blood to provide efficient temperature control of the patient. The catheter may also provide access to the patient's central venous system through one or more infusion lumens and infusion ducts. An elongate body defines an inflation lumen that conveys an inflation fluid to and from the pumping element, and an inflow lumen and an outflow lumen that supply heat exchange fluid to and from each heat exchange element. The pumping element may include an everting pumping balloon that expands out of a cavity in the elongate body after insertion of the catheter. The catheter may have an internal heating element that heats or cools the heat exchange fluid.

An oven for heating and frying food, particularly a rapid cook oven, includes walls and an openable oven door delimiting an oven space and heaters to heat food in the oven space. Such heaters including: microwave radiation devices, a frying plate having an undersurface, and heat circulating-air devices comprising a flow duct for removing circulating air from the oven space and leading it back into the oven space after cleaning, and a fan installed in the flow duct for creating a circulating-air flow in the said flow duct. The oven additionally includes structure delimiting a cooker space, thermal insulation between the oven space and the cooker space and a heater comprising a cooker situated in the cooker space.

A coupling arrangement coupling and thermally isolating a continuously variable electrical actuator rotationally coupled to and from a butterfly valve is provided. The valve may be used to modulate high temperature exhaust gas flow through an engine turbocharger. The actuator provides a continuously variable control of the valve. The coupling arrangement provides a thermal block to reduce heat transfer and vibration insulation between the actuator and the valve. The coupling arrangement generally includes a coupling shaft rotationally coupled at opposite ends to the input and output shafts by torsion spring mechanisms. The torsion spring mechanisms include yokes rotationally locking the coupling shaft to the input and output shafts. The torsion spring mechanisms allow a limited range of axial and pivotal translation between the coupling shaft and the input and output shafts and are preloaded to prevent rotational hysteresis in the valve.

A rotary table for a material processing machine such as a vertical milling machine utilizes direct drive motor(s) to precisely angularly position a work piece along one or more pivotal axes. The direct drive motor(s) are thermally insulated from the remainder of the machine to limit misaligning thermal expansion of the components of the machine. The motors may be symmetrically attached to their respective supports such that thermal expansion / contraction of the motor and surrounding components occurs symmetrically with respect to the motor to limit misalignment of the motor's rotational axis. A motor may mount to its respective support only at a first axial end thereof such that thermal expansion of a second axial end of the motor does not adversely shift the position of the first end. Axially narrow clamps selectively secure the rotors of the motors in desired positions.

A fuel injector having a nozzle with improved cooling including a retainer and a nozzle housing received therein. The nozzle housing includes a nozzle shank, an outer peripheral surface and at least one injection hole at a tip of the nozzle shank. The nozzle shank is positioned in a nozzle support portion of the retainer. In one embodiment, the outer peripheral surface of the nozzle shank is tapered, and the inner peripheral surface of the nozzle support portion is correspondingly tapered and sized to engage the outer peripheral surface of the nozzle shank along a tapered interface. In another embodiment, the inner peripheral surface of the nozzle support portion has a diameter smaller than a diameter of the outer peripheral surface of the nozzle shank so that an interference fit exists at a seal interface. In yet another embodiment, a nozzle seal seals an interface between the inner peripheral surface of the retainer and the outer peripheral surface of the nozzle shank to thereby prevent entry of hot gases into the interface. In another embodiment, the nozzle support portion is provided on a nozzle sleeve.

A thermal solution for an electronic device, which is positioned between a heat source and an external surface of the electronic device and / or another component of the electronic device, where the thermal solution facilitates heat dissipation from the heat source while shielding the external surface and / or second component from the heat generated by the heat source.

A universal food holding cabinet for keeping precooked food warm. The food holding cabinet includes a plurality of row assemblies that each includes first and second spaced apart heater plates to form a food holding cavity. A bezel extends across an edge of the upper heating plate of a row assembly and an edge of the lower heating plate of an adjacent row assembly. The bezel includes an air duct for cooling components associated with displays carried by the bezel. The bezel is fastened to the upper heater plate and the lower heating plate with an interlock that helps to mitigate oil migration among the row assemblies.

An induction heating device includes a main body, an induction coil provided in the main body and forming an electromagnetic field, and an induction coil driving circuit unit positioned in the main body to be physically and thermally separated from the induction coil.

A thermal insulating packer fluid contains an organic solvent of low thermal conductivity and a gelling agent which is hydratable in the solvent. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to outer annuli. The viscosity of the composition is sufficient to reduce the convection flow velocity within the annulus.

The invention relates to an improved method for producing silica aerogel in pure and flexible sheet form having effective suppression of radiative heat transport at high temperatures and increased thermal insulation property. The suppression of radiative heat transport was achieved by in-situ production of titanium dioxide nanoparticles in very minor concentrations during gelation of silica precursor, with nanoporous surface area more than 300 m2 / g and acts as an infra red reflecting agent. When aerogel is subjected to heat during hot object insulation, it automatically turn into infra red reflecting material. Said silica aerogel can be incorporated into the inorganic fibre mat matrix individually or into two or more layers with organic sponge sheet placed in between and stitched together to form a sandwich sheet to form highly insulating flexible sheet.

The present invention is directed to formulations of the premix utilized in the production of a pellet structured frozen dessert type product. The pelletized frozen dessert product is manufactured by introducing the liquid premix into a body of a cryogen such as liquid nitrogen such that the small volume of liquid premix is frozen rapidly. The invention elevates the melting temperature as well as the fusing temperature of the finished pellets such that the storage and serving temperatures of the pellets are similar to the bulk products. The invention utilizes the basic formulas and names and flavors associated with bulk type frozen desserts such as Ice Cream, Sorbet, Water ice, Ice Milk, Frozen Yogurt and similar type products. The pellet produced utilizing the pre-mix is structurally stable at normal retail and home freezer situations. The formulation and manufacture of the pelletized dessert product is substantially different from bulk frozen desserts: it is in itself a unique type product. The result of this invention is a product that maintains the desired individuality of the pellets while maintaining structure, such that fusing is inhibited at the storage and serving temperature.

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.

A fuel cell is made by laminating an anode channel 2 supplied with hydrogen or a hydrogen-containing gas gH, a cathode channel 3 supplied with oxygen or an oxygen-containing gas GO, and an electrolyte 4 arranged between the cathode channel and the anode channel. The electrolyte 4 is made by laminating a hydrogen separating metal layer for making hydrogen supplied to the anode channel 2 or hydrogen in a hydrogen-containing gas GH supplied to the anode channel 2 permeate; and a proton conductor layer made of ceramics, for establishing the hydrogen having permeated the hydrogen separating metal layer in a proton state and making it reach the cathode channel 3. In addition, the fuel cell has a coolant channel 5 for cooling the fuel cell 1. In the coolant channel 5, a low heat conducting section 55 having a heat conductivity smaller than that at a downstream side of a coolant C is formed at an inlet side of the coolant C.

An the expander-compressor unit (100) includes a closed casing (1) in which an oil can be stored in its bottom part, a compression mechanism (2) disposed in an upper part of the closed casing (1), an expansion mechanism (3) disposed in a lower part of the closed casing (1), a shaft (5) for coupling the compression mechanism (2) and the an expansion mechanism (3) to each other, and an oil pump (6), disposed between the compression mechanism (2) and the expansion mechanism (3), for supplying the oil (26) filling a surrounding space of the expansion mechanism (3) to the compression mechanism (2).

A heat capturing module for obtaining useful energy from waste heat includes an extendable hood directing hot gas through a heat exchange assembly having a plurality of heat pipes. A closed flow loop directs a heat transfer medium through the heat exchange assembly to heat the heat transfer medium, and directs the heated medium for use by an application. In one embodiment, the closed flow loop directs the heat transfer medium through an organic Rankine cycle unit where heat is converted to electrical power. An exhaust system having a variable-speed induction fan induces flow of the hot gas through the heat exchange assembly. The speed of the induction fan may be controlled to maintain a setpoint temperature of the heat transfer medium. The hood may be extended and retracted based on a measured temperature of gas at an intake region of the hood. The module is transportable by truck trailer.

A gas turbine engine includes an interstage seal assembly positioned in a plenum between the compressor section and turbine section. The seal assembly includes an annular seal member positioned in the plenum adjacent to the compressor section for restraining a fluid flow between the compressor section and the turbine section, and an annular heat shield member positioned in the plenum adjacent to the turbine section for limiting heat transfer from the turbine section to the compressor section. The annular heat shield member includes a plurality of slots formed on a surface of the heat shield member in a radial direction of the annular heat shield member.

The invention discloses continuous casting crystallizer casting powder for large circular blank abrasion resisting high manganese steel. According to the continuous casting crystallizer casting powder for the large circular blank abrasion resisting high manganese steel, cracks are reduced by adopting low carbon amount and high viscosity, reducing thermal stress inside blank shells and increasing powder consumption amount. The alkalinity of the casting powder is 0.8-1.1, the cracks caused by uneven heat transmission are avoided; through the adoption of 8-12% of Na2O, 6-8% of F- and 3-4.5% of Li2O, weak coldness and even heat transmission of the upper portion in a crystallizer are achieved, inclusion absorbing effects are improved, and the cracks are reduced; through the adoption of 2-8% of MnO, lattice vibration and conduction heat transmission are weakened, and the crystallization properties of the casting powder and the casting blank quality are improved. Raw materials of the continuous casting crystallizer casting powder for the large circular blank abrasion resisting high manganese steel are easy to obtain, and production cost is low. Through field testing, the casting power is good in spreadability and good in air permeability and can be smelted stably and be free of caking, the consumption amount of the casting powder is around 0.3-0.42kg per ton of steel, the consumption cost is relatively low, and the qualified rate of the first grate casting blanks is improved significantly.

According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.