126 results about "Thermal interference" patented technology

A non-volatile memory array includes an array of phase-changeable memory elements that are electrically insulated from each other by at least a first electrically insulating region extending between the array of phase-changeable memory elements. The first electrically insulating region includes a plurality of voids therein. Each of these voids extends between a corresponding pair of phase-changeable memory cells in the non-volatile memory array and, collectively, the voids form an array of voids in the first electrically insulating region.

Provided is a circuit device capable of increasing the packaging density and also suppressing the thermal interference between incorporated circuit elements. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member being arranged in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. In addition, inside the case member, a hollow portion (internal space) which is not filled with a sealing resin is provided, and this hollow portion communicates with the outside through a communicating opening, which is provided by partially opening the case member.

A structure of light tube includes a main body, a power supply module, and at least one light emission element. The main body has first and second heat dissipation zones and an accommodation chamber. The main body has two ends respectively and electrically connected to two conductive terminals. The power supply module is received and retained in the accommodation chamber of the main body. The power supply module includes an enclosure forming a receiving space in which a power supply device is received and retained. The light emission element is coupled to the main body so that heat from the light emission element is directly drained through the main body, while the power supply dissipates heat through natural air flows without relying on the main body, so that there parts do not cause thermal interference with each other and the performance of heat dissipation is improved to thereby extend the lifespan of the light tube. Further, the light emission element and the power supply are of modularized arrangements, which allow the users to conduct maintenance and repairing operation with simple tools by themselves.

The electric rotating machine is provided with an intermediate plate having a power circuit connection portion that is connected with an outgoing lead drawn out from a power circuit unit and an armature winding connection portion that is connected with the power circuit connection portion and an outgoing lead drawn out from an armature winding. The power circuit connection portion and the armature winding connection portion are arranged at desired positions and outgoing leads from the armature winding of the stator are drawn out in such a way as to fall within a given space, so that intermediate connection lines for connecting windings can be shortened. Accordingly, not only the breakage of an intermediate connection line caused by a vibration can be prevented, but also the switching elements can separately be arranged so as to reduce thermal interference between the switching elements; therefore, the switching elements can effectively be cooled.

Provided is a circuit device capable of increasing the packaging density and also suppressing the thermal interference between incorporated circuit elements. In a hybrid integrated circuit device, a first circuit board and a second circuit board are incorporated into a case member being arranged in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper face of the first circuit board and a second circuit element is arranged on the upper face of the second circuit board. In addition, inside the case member, a hollow portion (internal space) which is not filled with a sealing resin is provided, and this hollow portion communicates with the outside through a communicating opening, which is provided by partially opening the case member.

A multi-axial pivoting liner within the combustion system of a turbine engine allows the system to work with minimum thermal interference, especially during system operation at transient conditions, by allowing the liner to pivot and slide about its centerline and relative to the turbine scroll. The pivoting liner has the ability to control and minimize air leakage from part to part, for example, from the liner to the turbine scroll and liner to the surrounding structures, during various operating conditions. Additionally, the liner provides for easy assembly with no flow path steps. Finally, the pivoting liner tolerates thermal and mechanical stresses and minimizes thermal wear.

The thermal interference due to the self heating of transistors constituting a gilbert cell circuit is reduced, thereby largely improving the receiving sensitivity to signals. A mixer circuit composed of a gilbert cell circuit comprises transistors T1 to T6. Each of the transistors T1 to T4 is con figured so that four transistors may be connected in parallel. In a layout on a semiconductor chip, four transistors T1a to T1d and T2a to T2d respectively constituting the transistors T1 and T2 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Similarly, four transistors T3a to T3d and T4a to T4d respectively constituting the transistors T3 and T4 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Thus, the thermal influence applied on the transistors T1 to T4 is uniformed.

The invention discloses a method for measuring anisotropic material heat conductivity based on a small-plane heat source. The method comprises the following steps: building a three-dimensional heat transfer model of a measured sample in a right-angle coordinate system in a special form under the action of thermal interference; obtaining an analytical solution of temperature change in anisotropic material in a time domain by adopting Laplace transformation, variables separation, transcendental equation solving and inverse Laplace transformation methods; through sensitivity calculation, analyzing linear correlation of sensitivity coefficients of normal heat conductivity and tangential heat conductivity and the effects of parameters on temperature change; building an experiment measurement system, and collecting transient response data of the temperature; and simultaneously determining the normal heat conductivity and the tangential heat conductivity of the measured anisotropic material by an improved Gauss Newton parameter estimation method. The method has the advantages that the transient measurement method which is convenient to implement, fast in measurement and wide in application range and adopts simple steps is provided, and the normal heat conductivity and the tangential heat conductivity of the rectangular anisotropic material can be obtained by once measurement.

In a disc driving apparatus, wherein a laser diode and a laser driver circuit board are mounted on a pickup housing in thermal contact therewith and are disposed adjacent to each other, a heat separation member is provided between the laser diode and the laser driver circuit board for effecting thermal separation therebetween, thereby reducing the thermal interference between the heat-generating elements that are adjacent to each other in the optical pickup. This makes it possible to protect the heat-generating elements from being deteriorated, leading to a reduction in the lifetime thereof, as well as, to improve the reliability thereof.

The invention provides a method for measuring thermophysical property of a columnar thermal insulation material, which is used for determining radial heat conductivity, axial heat conductivity and volume heat capacity of the columnar orthotropic thermal insulation material by measuring temperature variation of one point of a tested sample. The method comprises the following steps: establishing a two-dimension cylindrical coordinate heat transfer model under effect of thermal interference of specific form in cylindrical coordinates; obtaining analytical solution of temperature variation of the orthotropic thermal insulation material in the time domain by adopting Laplace transformation, Hankel transformation and Laplace inverse transformation; analyzing correlation among sensitivity coefficients of the radial heat conductivity, the axial heat conductivity and the volume heat capacity and the influences of temperature variation caused by the parameters through calculation on the sensitivity; establishing a corresponding measurement system, and acquiring the transient response data of the temperature in real time; and meanwhile, determining the radial heat conductivity, the axial heat conductivity and the volume heat capacity of the tested orthotropic thermal insulation material by adopting an L-M parameter estimation method. The method provided by the invention is convenient to implement and adopts simple steps, and meanwhile can be used for measuring the radial heat conductivity, the axial heat conductivity and the volume heat capacity of the columnar thermal insulation material.

A pixel circuit, and a method for operating a pixel circuit, to provide a multiple knee response characteristic. In one embodiment of the invention, one or more feed-through pulse (FTP) signals are transmitted to an integration node to end a first linear integration time period. The FTP signal allows electrons to drain from the integration node to a reset node through a transfer gate. After the first integration period, a second linear integration period is conducted on the pixel circuit, where the photo conversion gain of the pixel circuit becomes reduced under higher illumination conditions due to the drained node. Such operation creates a pixel with a photo response having multiple “knee” points, where each “knee” in the photo response curve will create separate regions whose photo sensitivities can be independently controlled with minimal thermal interference. By setting different voltage levels for the FTP signal and by controlling the integration time periods, the photo-response of the pixel circuit can be easily controlled.

A light-emitting diode (LED) illumination apparatus including a housing, an LED light source, and a power supply unit is provided. The housing has a light source accommodating space, a power supply accommodating space and a thermal isolation channel linked to the atmosphere, wherein the thermal isolation channel is located between the light source accommodating space and the power supply accommodating space. The LED light source is disposed in the light source accommodating space and the power supply unit is disposed in the power supply accommodating space. The thermal isolation channel is capable of preventing thermal interference between the LED light source and the power supply unit.

Provided is a circuit device capable of increasing the packaging density and preventing the thermal interference between circuit elements to be incorporated. In a hybrid integrated circuit device, a first circuit board and a second circuit board are fitted into a case member in a way that the first circuit board is overlaid with the second circuit board. A first circuit element is arranged on the upper surface of the first circuit board and a second circuit element is arranged on the upper surface of the second circuit board. Furthermore, inside the case member, provided is a hollow portion that is not filled with a sealing resin. Such a configuration prevents the second circuit element, which is a microcomputer, from operating unstably due to a heat generated in the first circuit element, which is a power transistor, for example.

Provided is a circuit device having a configuration in which thermal interference between built-in elements is suppressed and being miniaturized in total size. A hybrid integrated circuit device of the present invention includes: a circuit substrate, a sealing resin and leads. The circuit substrate in its upper surface is incorporated with a hybrid integrated circuit formed of semiconductor elements and the like respectively fixed to heat spreaders. The sealing resin coats the circuit substrate and thus seals the hybrid integrated circuit. The leads each extend to the outside while being fixed to a pad formed of a conductive pattern. In this hybrid integrated circuit device, the semiconductor elements are mounted on the respective heat spreaders at positions offset from each other, and thereby are arranged to be spaced away from each other.

The electric rotating machine is provided with an intermediate plate having a power circuit connection portion that is connected with an outgoing lead drawn out from a power circuit unit and an armature winding connection portion that is connected with the power circuit connection portion and an outgoing lead drawn out from an armature winding. The power circuit connection portion and the armature winding connection portion are arranged at desired positions and outgoing leads from the armature winding of the stator are drawn out in such a way as to fall within a given space, so that intermediate connection lines for connecting windings can be shortened. Accordingly, not only the breakage of an intermediate connection line caused by a vibration can be prevented, but also the switching elements can separately be arranged so as to reduce thermal interference between the switching elements; therefore, the switching elements can effectively be cooled.

A light-emitting diode (LED) illumination apparatus including a housing, an LED light source, and a power supply unit is provided. The housing has a light source accommodating space, a power supply accommodating space and a thermal isolation channel linked to the atmosphere, wherein the thermal isolation channel is located between the light source accommodating space and the power supply accommodating space. The LED light source is disposed in the light source accommodating space and the power supply unit is disposed in the power supply accommodating space. The thermal isolation channel is capable of preventing thermal interference between the LED light source and the power supply unit.

In a flow sensor, an upstream heating element and a downstream heating element are disposed, respectively, upstream and downstream in a flow direction of a fluid so as to undergo mutual thermal interference. By controlling heating currents flown through the respective heating elements, an average temperature control portion maintains an average temperature of the two heating elements at a temperature predetermined degrees higher than a temperature of the fluid detected by a fluid temperature detection portion while a voltage ratio control portion performs control so that a temperature difference or a ratio of applied voltages between the two heating elements takes a predetermined value. A detection signal corresponding to a flow direction of the fluid is obtained from a state of the control on the heating currents and whether a flow direction of the fluid is forward or backward is determined.

The present invention provides a phase change non-volatile memory material comprising a base material and at least one non-metallic light element selected from the group consisting of boron, carbon, nitrogen and oxygen, wherein the base material has a composition which corresponds to either that of congruent melting of the type with a minimum melting point or that of eutectic melting within the range of ±0.15 atomic fraction for each constituent element, thereby having a melting temperature of 600° C. or lower. The phase change non-volatile memory material according to the present invention may be utilized to reduce the electric power needed for reset / set operation and thermal interference between memory cells.

An array optical sub-assembly includes a base seat, an integrated circuit, a transparent substrate and a photoelectric element. The integrated circuit and the photoelectric element are bonded respectively to the base seat and the transparent substrate. The base seat and the transparent substrate form a sealed space to protect the elements. The photoelectric element and the integrated circuit are separated to avoid thermal interference between the photoelectric element and the integrated circuit. Therefore total performance is increased and fabrication difficulty is reduced.

The invention relates to a multi-temperature-zone temperature control system and a control method thereof. The control system comprises a plurality of heating units, a feedback signal acquisition unit, a correction processing unit and a control signal formation unit. With the multi-temperature-zone temperature control system and the control method, the change on system temperature rise characteristic generated due to manual factor in a manner of adopting the control signal formation unit influences whole heating process can be avoided, so that the mutual influence by correction factors and automatic control parameters can be further avoided, and the adjustment difficulty can be lowered; the temperatures of a plurality of heating zones can surely rise simultaneously, mutual thermal interference among the heating zones can be reduced, and the temperature can be fast converged and achieve a constant state; and in addition, the number of the feedback signal acquisition units can be decreased, and further the structure of the temperature control system can be simplified.

The Duo Twin-Containers Drinking Disposable Cup system allows customers to order two different beverages—cold and / or hot—and have them served in two independent and disposable receptacles hosted in a single disposable cup. The twin-containers disposable cup system is comprised of four pieces: two containers in the shape of half cups that neatly fit inside a disposable cup; a disposable cup that hosts the two said half-cup shaped receptacles; and a lid with perforations to allow use of straws or direct lips-to-lid consumption in the case of hot drinks and a diametrical extrusive panel that serves to separate at the top the two half cups to prevent. An empty space between the facing flat sides of the two half-cup-shaped receptacles improves thermal insulation, thus allowing the coexistence of hot and cold beverages without noticeable thermal interference.

A non-volatile memory array includes an array of phase-changeable memory elements that are electrically insulated from each other by at least a first electrically insulating region extending between the array of phase-changeable memory elements. The first electrically insulating region includes a plurality of voids therein. Each of these voids extends between a corresponding pair of phase-changeable memory cells in the non-volatile memory array and, collectively, the voids form an array of voids in the first electrically insulating region.

In order to meet the requirement for enhancing the speed of an optical disk apparatus, it is necessary to have a write strategy for compensating thermal interference during recording at high speed on a high-density optical disk such as BD. However, there has been no known technology for such a write strategy. By shifting the start position and the end position of a recording pulse in accordance with the preceding mark length, the preceding space length, the recording mark length, and the following space length, excellent jitter values have been obtained. Further, by simplifying parameters when the preceding pattern contains the shortest mark and the shortest space which cause large thermal interference, 12× BD recording can be achieved with the number of parameters smaller than double the number of parameters of the conventional 4×4 type write strategy.

The invention discloses a three-terminal output dual-wavelength laser, which comprises a semiconductor laser pumping system and an optical resonant cavity for forming laser oscillation, wherein the optical resonant cavity is a V-shaped folding resonant cavity; in addition, an input cavity mirror, a laser crystal, a phase delay piece, a thin film polarizer, a V-shaped cavity folding mirror, a nonlinear optical crystal and a V-shaped cavity output mirror are sequentially arranged on an optical path of the V-shaped folding resonant cavity; fundamental-frequency light and variable-frequency light generated in the V-shaped folding resonant cavity are output from the V-shaped cavity folding mirror, the V-shaped cavity output mirror and the thin film polarizer respectively to realize the simultaneous output of three terminals. According to the three-terminal output dual-wavelength laser, a reasonable structural design is adopted for the optical resonant cavity, and laser is simultaneously output in three directions, so that the application fields of an all-solid-state dual-wavelength laser are expanded; a proper cavity mirror film system and a proper optical crystal are selected to optimize the power of the fundamental-frequency light in the cavity, so that the overall performance of the laser is greatly improved, and the three-terminal output dual-wavelength laser can be widely applied to the fields of holographic interference, photo-thermal interference and the like with a requirement on a plurality of light sources.

The invention relates to a phase change energy storage sleeve-type geothermal heat exchanger and belongs to the technical field of ground source heat pump air conditioners. The phase change energy storage sleeve-type geothermal heat exchanger is constituted by a central pipe, a first sleeve, a second sleeve, a third sleeve, a first annular channel, a second annular channel, a top cover plate, a bottom cover plate, summer and winter working condition phase change materials, a water inlet pipe and a water outlet pipe. The first sleeve, the second sleeve and the third sleeve are placed on the outer side of the central pipe in the radius increasing direction with the central pipe as the circle center. The summer working condition phase change materials are packaged into the central pipe, the winter working condition phase change materials are packaged into an annular closed space defined by the second sleeve and the third sleeve. According to the phase change energy storage sleeve-type geothermal heat exchanger, the defects of large soil temperature fluctuation, wide thermal effect zone and large thermal short-circuiting of the water inlet and outlet pipes during operation of an existing geothermal heat exchanger are overcome, through phase change heat absorption and release of the phase change materials, the heat exchange amount of the geothermal heat exchanger can be increased while thermal short-circuiting of the water inlet and outlet pipes is weakened, the thermal effect degree of the soil temperature is reduced, the thermal interference radius is decreased, and the pipe burying area is decreased, so that the heat exchange efficiency of the heat exchanger is improved.

The invention belongs to the plant tissue culture technology and provides a plant tissue culture shelf with ballasts installed at the top. The prior art has the following defects: the ballasts of the plant tissue culture shelves continuously emit heat, thus reducing the service lives of the ballasts; adverse effects are caused on tissue culture seedlings; and the ballasts and the light source tubes are difficult to overhaul. The plant tissue culture shelf comprises a shelf body (2), separators (7), support legs (8), a switch (3), fluorescent lights (4) and ballasts (5), wherein a ballast installation plate (1) is arranged at the top of the tissue culture shelf body (2); the ballasts (5) are intensively installed on the installation plate (1); the switch (3) is arranged on the front side of the tissue culture shelf body (2); the switch (3) is a multiposition switch; and the position number of the multiposition switch is the same as the number of layers of the tissue culture shelf. The plant tissue culture shelf has the following advantages: the service lives of the ballasts are prolonged; thermal interference with the tissue culture seedlings is avoided, thus being beneficial to growth of the tissue culture seedlings; and the ballasts and the tissue culture shelf lines are convenient to overhaul.

The present invention provides a phase change non-volatile memory material comprising a base material and at least one non-metallic light element selected from the group consisting of boron, carbon, nitrogen and oxygen, wherein the base material has a composition which corresponds to either that of congruent melting of the type with a minimum melting point or that of eutectic melting within the range of ±0.15 atomic fraction for each constituent element, thereby having a melting temperature of 600° C. or lower. The phase change non-volatile memory material according to the present invention may be utilized to reduce the electric power needed for reset / set operation and thermal interference between memory cells.

A simple gas sensor for detecting a concentration of a detected gas with high accuracy, in which a thermal interference can hardly occur between a normal detection element pair and a reference detection element pair, is provided.

Provided is a semiconductor module having a structure capable of suppressing the thermal interference between switching elements on each pair of substrates on a base plate and appropriately cooling the switching elements on all of the substrates. Parallel flow generating means (8) for generating parallel flows of a refrigerant are arranged in refrigerant flow paths (7). Each substrate (3) has thereon the switching element (4) and a diode element (5) such that those elements are disposed in parallel in a direction (C) orthogonal to a direction (D) in which the refrigerant flows. On each substrate, the switching element (4) and a connection terminal area (6) are arranged in different positions in the refrigerant flowing direction (D). Each pair of the substrates (3) are disposed in series in the refrigerant flowing direction (D). In one substrate (3) of each pair, the switching element (4) is arranged on one side in the orthogonal direction (C), and in the other substrate (3), the diode element (5) is disposed on that same side in the orthogonal direction (C). In at least one substrate (3) of each pair, the connection terminal area (6) is disposed closer to the other substrate (3) than the switching element (4) on that substrate (3).