61results about How to "Conduct heat" patented technology

A two terminal switching device includes first and second conductive terminals and a nanotube article. The article has at least one nanotube, and overlaps at least a portion of each of the first and second terminals. The device also includes a stimulus circuit in electrical communication with at least one of the first and second terminals. The circuit is capable of applying first and second electrical stimuli to at least one of the first and second terminal(s) to change the relative resistance of the device between the first and second terminals between a relatively high resistance and a relatively low resistance. The relatively high resistance between the first and second terminals corresponds to a first state of the device, and the relatively low resistance between the first and second terminals corresponds to a second state of the device.

A heat-dissipation structure mainly including a heat-absorbing head, a heat pipe, and a tube jacket is provided. The heat pipe includes a heated end and a cooling end, wherein the heated end of the heat pipe is connected to the heat-absorbing head, and a flange is projected form the surface of the heat pipe adjacent to the cooling end. A joint is disposed on the cooling end of the heat pipe, and is connected to the tube jacket through the opening, such that the cooling end is sealed inside the tube jacket, and the flange of the heat pipe is tightly fastened between the joint and the opening. The heat-dissipation structure is used to rapidly conduct the waste heat generated by a processing chip to the tube jacket via the heat pipe.

The invention provides an ionic wind radiating device, which is characterized by comprising an insulated shell body and an ionic wind generator, wherein the shell body is composed of a bottom surface and a plurality of sliding rails in vertical connection with the bottom surface; an emitter of the ionic wind generator is fixed to free ends of the sliding rails, and is opposite to the bottom surface of the shell body; the emitter is connected with a positive electrode or a negative electrode of a power supply; the peripheral edge of a receiver of the ionic wind generator is provided with a plurality of sliding blocks, and the sliding blocks are installed on the sliding rails; the receiver is electrically connected with a ground wire, and an insulated thermal conducting substrate is fixed to the back surface of the receiver; the thermal conducting substrate is fixed to the bottom surface of the shell body and is fixedly connected with the bottom surface; and the surface of the receiver is coated with an ozone filtering coating. Through the structural design, the ionic wind generator has three functions of generating an ionic wind, effectively conducting heat and removing ozone generated in the ionization process. The ionic wind radiating device can adjust the distance between the receiver and the emitter of the ionic wind generator, so as to adjust wind speed of the ionic wind.

The invention relates to a multi-channel flat tube for heat exchangers that contains at least two channels extending along its length and arranged essentially adjacent to each other along its width passable by fluid, or at least two channel sections formed by one or several of said channels, whereby between the channels or the channel sections over the length of the flat tube one region of reduced heat transmission in each case is provided, characterized by that the region of reduced heat transmission is defined by a connecting web and isolating channels arranged on both sides of the connecting web. The transverse heat conduction within the flat tube is reduced by this arrangement.

The invention discloses a multi-component simulative engine applied to vacuum plume effect experimental research and an ignition scheme thereof. The multi-component simulative engine comprises a pre-combustion chamber head part, a pre-combustion oxygen supplementation chamber, a thrust chamber head part and a thrust chamber body part, wherein the pre-combustion chamber head part is tightly connected with the pre-combustion oxygen supplementation chamber, and the pre-combustion oxygen supplementation chamber, the thrust chamber head part and the thrust chamber body part are connected tightly and sequentially. The ignition scheme comprises working medium input, ignition time sequence and pre-combustion chamber capacity design. According to the invention, a propellant working medium is input through an ignition incendiary agent welding nozzle, an ignition oxidant welding nozzle and an oxygenating agent welding nozzle, and simulation of combustion products of different real engines can be realized by matching different incendiary agents, oxidants and other gases.

It is an object of this invention to obtain a heat conduction pipe superior in corrosion resistance as well as heat exchange efficiency between fluid flowing respectively through an inside and an outside for great heat radiation property and endothermic characteristics. It is also object of this invention to form the heat conduction pipe superior in the corrosion resistance as well as the heat radiation property and endothermic characteristics at inexpensive price. To achieve the above, at least single resin coating layer is formed on an outer circumferential surface of a metal pipe, a metal fin member is spirally wound on an outer circumferential surface of the resin coating layer with a side end surface the metal fin member in contact. The winding contact portion is made to encroach a surface of the resin coating layer to form the heat conduction pipe.

This invention is a tube-style radiator structure, which includes an air-cooled fins, two heat conduction tubes, a base and a cover. Each of the heat conduction tubes has two straight tube sections and an arc tube section so as to form the shape of “U”. One of the straight tube sections of each heat conduction tube passes through the air-cooling fin part and the other straight tube thereof lies in one of two grooves provided in the base. Accordingly, a large cooling area can be obtained and the efficiency of heat dissipation can be enhanced effectively.

A method for connecting a heat-dissipating body and a heat pipe and the structure thereof are used to improve the efficiency of heat conduction. The structure includes a heat-dissipating body and a heat pipe. The central position of the heat-dissipating body is provided with an accommodating trough for accommodating the heat pipe. A plurality of corresponding slots extends outwardly from the periphery of the trough. The other end of the slot is connected to a through hole. Tools are disposed in the slots to widen the slots and thus the periphery of the trough, so that the inner diameter of the trough is larger than the outer diameter of the heat pipe. After the heat pipe penetrates into the trough, the tools are removed, so that the inner wall surface of the trough abuts tightly against the outer circumferential surface of the heat pipe. Thus, the optimal efficiency of heat conduction between the heat pipe and the heat-dissipating body can be achieved.

A heating roller is constituted by an elastic roller AA in which an elastic thermal insulation layer is formed, and an endless cylindrical member BB in which a releasing layer is formed on a thin-film base material (heat generating layer), wherein the elastic roller M and the cylindrical member BB are constituted such that they are separable, and wherein a slight gap is formed between the elastic roller AA and the cylindrical member BB. Then, when a fixing device is started up and the heating roller is rotated, a deflection B1 of the cylindrical member BB caused by the inner diameter difference between the cylindrical member BB and the elastic roller M is generated on the paper entry side.

A heat pipe is disclosed in the present invention. The heat pipe includes a first pipe and at least a second pipe. The first pipe is formed with an enclosed space. The second pipe is disposed in the enclosed space. There is no wick structure disposed between the first pipe and the second pipe.

The invention relates to a dryer for a textile fabric web, comprising a dryer chamber (2) and having at least one drum (3a) which is arranged in the dryer chamber (2) and around at least part of which the fabric web (5) is wrapped, wherein heated drying air flows through the fabric web (5) and is discharged via an interior chamber of the drum (3a), characterized in that the dryer (1) has a separate additional compartment (10) via which fresh air (11) is supplied and exhaust air (13) is discharged.

A wafer holder for supporting a wafer within a CVD processing chamber includes a vertically moveable lift ring configured to support the bottom peripheral surface of the wafer, and an inner plug having a top flat surface configured to support the wafer during wafer processing. The lift ring has a central aperture configured to closely surround the inner plug. When a wafer is to be loaded onto the wafer holder, the lift ring is elevated above the inner plug. The wafer is loaded onto the lift ring in the elevated position. Then, the lift ring is maintained in the elevated position for a time period sufficient to allow the wafer temperature to rise to a level that is sufficient to significantly reduce or even substantially prevent thermal shock to the wafer when the wafer is brought into contact with the inner plug. The lift ring is then lowered into surrounding engagement with the inner plug. This is the wafer processing position of the wafer holder.

A super abrasive impregnated singulation saw blade is made by depositing grindable friable super abrasive particles while electro depositing or electroless depositing a strong binder metal such as nickel on a form or mandrel. The deposited super abrasive on the upper side protrudes from the side of the blade and are ground down to or near the binder metal to plannerize the sides of the saw blade and true and balance the saw blade. Post operations include electro polishing to expose equal amounts of super abrasive on the cutting edge or on all sides. Antifriction particles may be added in the side walls or deposited on the outside.

The invention provides a closed-loop Hall current sensor, belongs to the technical field of sensors, and solves problems that existing sensors are poor in anti-interference capacity. The closed-loop Hall current sensor comprises an insulating shell. The insulating shell is internally hollowed so that an accommodating cavity is formed. An annular magnetic core is transversely arranged in the accommodating cavity. The external surface of the annular magnetic core is provided with coils. The annular magnetic core is provided with a notch penetrating through the annular magnetic core. A Hall element is installed in the notch. An annular installing part penetrating through the insulating shell is arranged in the middle part of the annular magnetic core. The insulating shell is also internally provided with a circuit board. One end of the circuit board is respectively connected with the Hall element and the coils, and the other end of the circuit board extends so that a pin headers is formed. The pin head downwardly stretches out of the insulating shell The annular installing part is made of polyformaldehyde composite material. The closed-loop Hall current sensor has advantages of being high in sensitivity, high in anti-interference capability and convenient to install.

A cavity assembly includes a mounting member, an active gain medium, at least one electro-optic component and at least one alignment assembly. The mounting member defines an aperture within which the active gain medium is disposed, and is comprised of a thermally conductive material. The alignment assemblies are disposed relative to the active gain medium, and are configured to receive the electro-optic components such that electro-optic components at least partially align with the active gain medium. The alignment assemblies are rotatably disposed relative to the active gain medium such that relative rotation of the alignment assemblies and the active gain medium alters the alignment of the respective electro-optic components with respect to the active gain medium. The cavity assembly may be mounted within a thermally conductive housing to transfer heat away from the active gain medium.

In a control apparatus for an internal combustion engine in which an SCR catalyst is arranged in an exhaust passage, a dummy determination processing to determine whether the selective catalytic reduction catalyst is mounted at a location is carried out, based on a temperature difference between a temperature of exhaust gas flowing into the location where the selective catalytic reduction catalyst is to be arranged and a temperature of exhaust gas flowing out of the location, after starting of the internal combustion engine, wherein when a period of time for the temperature of the selective catalytic reduction catalyst to become equal to or less than a fixed temperature is equal to or more than a predetermined period of time, the dummy determination processing is carried out, whereas when the period of time is less than the predetermined period of time, the dummy determination processing is not carried out.

Provided in the invention is an open-loop hall current sensor. With the sensor, a problem of weak anti-interference capability of the existing sensor is solved. The open-loop hall current sensor comprises an insulating housing; a mounting part is arranged at the end surface of the insulating housing; and a positioning part is arranged at the side wall of the insulating housing. The middle part of the insulating housing is hollowed to form an accommodation cavity; and an annular mounting part for installing a lead is arranged in the accommodation cavity. An annular magnetic core is arranged between the annular mounting part and the insulating housing; a notch penetrating the annular magnetic core is formed in the annular magnetic core; and the annular magnetic core and the annular mounting part are arranged coaxially. A hall element and a circuit board connected with the hall element are installed in the notch. A connecting hole is formed in the insulating housing; a connecting wire connected with the circuit board is arranged in the connecting hole; and a connecting sleeve is arranged between the connecting wire and the connecting hole. The annular mounting part is made of a polyformaldehyde composite material. The open-loop hall current sensor has advantages of high anti-interference capability and convenient installation.

The Invention provides a head of solar street light to solve such problems of the existing solar street lamp as inconvenient installation, easily damaged battery by high temperature and improper work in rainy days, etc. The head of solar street light invention can be used for replacing all AC street lamps. The invention comprises a crystalline silicon panel, a LED light set, a battery, a control system and a lamp housing; a cavity is concavely provided on the back of the lamp housing, which is covered with the crystalline silicon panel that forms an airtight vacuum insulation zone with the cavity; cavities for lamp and battery, which are insulated through the vacuum insulation zone, are concavely provided on the front side of the lamp housing, and the LED light set and the battery are installed in the lamp cavity and the battery cavity respectively.

A vent hole 12 is provided in the upper part of a front panel 1e of an outer case 1. Air in a room having passed through a section in which a main heat exchanger 6 is arranged is led to the vent hole 12 through a space between an upper plate 1b of an outer case 1 and an upper wall 2d of a combustion housing 2. A drain dish 18 is arranged on the upper face of the upper wall 2d of the combustion housing 2.

A spacer for insulating glass panes comprises a profile body made using a first plastics material, which has a substantially U-shaped cross section with first and second side walls arranged in parallel, each having a free end and an inner wall extending between the first and the second side wall, and a vapor diffusion barrier made of a poorly heat conducting material, extending from the free end of the first side wall to the free end of the second side wall, wherein the vapor diffusion barrier is arranged substantially in parallel to and spaced apart from the inner wall. The profile body together with the vapor diffusion barrier encloses a cavity of the spacer which is optionally configured to accommodate a desiccant.

A flexible electric heating pad has a first laminate layer, a second laminate layer, and a printed layer formed on the first laminate layer. The printed layer includes a plurality of distributed conducting wires and a plurality of connected electric resistances. A circuit board is set at a contact point of positive and negative conducting wires of the printed layer. An electric wire connected to the circuit board can be plugged in a power supply terminal. An aluminum foil sheet is sandwiched between the laminate layers on an external exposed side of a surface of the printed layer.