14178results about How to "Evenly heated" patented technology

A compound mold or tooling system is designed to provide an alternative to conventional, expensive, metal molds for various plastics molding applications. The compound mold comprises a replaceable thin-walled liner, or skin-mold, defining the mold surface, temporarily bonded by vacuum means or mechanical means to a conforming backing-mold mold body supported by a rigid backing-plate. Both skin- and backing-molds are composed of suitable polymers with or without additives, fillers, reinforcements or other inclusions depending on mold requirements. The backing-plate contains standard features and fixtures common to all molds used in the particular process or of a particular geometry.

A portable baking oven for a pizza or other food item includes a food item heating plate, a base having a heating chamber, and a top cover having a moisture vent and a heat reflector structure extending across the inside of said top cover. When placed on said base, the top cover forms a baking chamber above the heating plate. Heat produced in the base's heating chamber circulates up through air passageways in the base into the baking chamber above the food item heating plate. This circulated heat is reflected back down toward the food item heating plate by the top cover's heat reflecting structure to accelerate baking of the top of a food item placed on the heating plate. The top cover's moisture vent can be located above the heat reflector structure in the top cover, and openings can be provided in the heat reflector structure which allow moisture emitted by a food item being baked in the oven to pass through the reflector structure and out through the top cover moisture vent.

There is provided improved laser sintering systems that increase the powder density and reduce anomalies of the powder layers that are sintered, that measure the laser power within the build chamber for automatic calibration during a build process, that deposit powder into the build chamber through a chute to minimize dusting, and that scrubs the air and cools the radiant heaters with recirculated scrubbed air. The improvements enable the laser sintering systems to make parts that are of higher and more consistent quality, precision, and strength, while enabling the user of the laser sintering systems to reuse greater proportions of previously used but unsintered powder.

The invention discloses a multifunctional pot. The pot includes a housing, a heating element heat conduction disk and a pot body, a liner is arranged in the housing, and the upper end of the housing is connected with the upper end of the liner; the heating element heat conduction disk is arranged in the liner, the height of the heating element heat conduction disk is lower than the depth of the liner, a bottom heating element is arranged at the outer bottom of the heating element heat conduction disk, an annular heating element is arranged on the outer side wall of the heating element heat conduction disk, and the bottom heating element and the annular heating element are in series connection and are electrically connected to a working circuit of the multifunctional pot; the pot body is arranged on the heating element heat conduction disk, the inner wall of the heating element heat conduction disk is in contact with the outer wall of the pot body, and the height of the pot body is larger than the depth of the heating element heat conduction disk. The heating element heat conduction disk of the multifunctional pot directly heats the pot body evenly, the inner wall of the heating element heat conduction disk can be in close contact with the outer wall of the pot body, hence, most of heat can be transmitted to the pot body, the liner can effectively keep the heating element from transmitting heat to the outside world, the heat loss is small, and the energy utilization rate is high.

The invention provides an Al-Fe-C-RE aluminium alloy and a preparation method thereof. The preparation method comprises the following steps of: a) casting an aluminium alloy cast ingot; b) homogenizing the aluminium alloy cast ingot and rolling the homogenized aluminium alloy cast ingot to obtain an aluminium alloy rod material; c) intermittently annealing the aluminium alloy rod material obtained in the step b); and d) aging the aluminium alloy rod material obtained in the step c), thus obtaining the aluminium alloy. The invention also provides a power cable. The aluminium alloy has better overall performances by selecting and controlling the added elements and adopting a reasonable preparation process.

The invention discloses an air fryer capable of forming thermal cycle heating through cyclone. The air fryer comprises a windshield cover, a motor assembly, an extractor fan and a rotating air duct unit, wherein the lower part of the windshield cover is opened, and a small hole is formed in the center of the upper part of the windshield cover; the motor assembly is arranged at the upper part of the windshield cover and comprises a motor transmission shaft, and the motor transmission shaft penetrates through the small hole in the center of the upper part of the windshield cover; the extractor fan is arranged in the windshield cover and is connected with the motor transmission shaft; the rotating air duct unit is arranged in the windshield cover, is positioned under the extractor fan and is fixedly connected with the windshield cover through a connecting post, a ventilating opening is formed in the upper part of the rotating air duct unit, and the lower part of the rotating air duct unit is opened; the rotating air duct unit can enable air flowing downwards under the combined action of the extractor fan and the windshield cover to flow downwards rotationally along a certain angle to form the cyclone. According to the air fryer disclosed by the invention, the thermal cycle heating is formed through the cyclone, and thus food can be more uniformly baked by hot air.

A cooling structure for a portable computer includes a cooling fan creating an air stream to release heat generated in a main body of the computer to the outside through at least one vent. First and second heat pipes transfer heat generated in first and second heat sources on a main board of the computer to a path of the air stream. A portion of the air stream is also directed to the interior of the main body.

The present invention relates to a kind of electric pressure cooker and electric rice cooker. It includes outer shell, pot cover, inner pot, heating disk and temperature detection and control device of electric heating pot. The inner pot is placed in the upper portion of heating disk, and said inner pot is a stainless steel single-layer structure. The temperature detection and control device of invented electroheating pot is formed from heat sensing element and control circuit of electroheating pot, and said heat sensing element is fixed on the heating disk.

A method for dehumidification and controlling system pressure in a refrigeration system includes providing a refrigeration system having a compressor, a condenser and an evaporator connected in a closed refrigerant loop. Each of the condenser and evaporator have a plurality of refrigerant circuits. A first heat transfer fluid is flowed over the condenser and a second heat transfer fluid is flowed over the evaporator. At least one of the refrigerant circuits of the condenser is isolated to provide a decreased amount of heat transfer area within the condenser and to increase the refrigerant pressure within the refrigeration system when the refrigerant pressure within the refrigeration system is at or below a predetermined pressure. At least one of the refrigerant circuits of the evaporator is isolated to dehumidify and maintain the temperature of the second heat transfer fluid at or above a predetermined temperature when dehumidification is required.

The invention discloses a pressure relief device and a pressure cooker thereof. The pressure relief device comprises a connecting plate. One end of the connecting plate is connected with a reciprocating motion portion in a pressure intensity control device. The other end of the connecting plate is provided with a sealing pressure head for blocking a pressure relief hole. A kick leaf spring and a reset mechanism are arranged on the connecting plate. The other end of the kick leaf spring is connected with a cover plate. According to the pressure relief device and the pressure cooker thereof, constant changing of pressure inside a cooking cavity can be achieved by rapidly opening and closing the sealing pressure head and the pressure relief hole, so that liquid drives solid food to roll, and the solid food in a cooking cavity is heated uniformly. The pressure relief device and the pressure cooker thereof are convenient to install and long in service life.

The invention provides an Al-Fe-Sb-RE aluminum alloy, and a preparation method of the Al-Fe-Sb-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention discloses a conducting-stirring friction hybrid heat source welding method and a piece of equipment, wherein, in stirring friction welding, a stir head and a workpiece are simultaneously insulated from the main body of a welding machine, the clamp of a fixed workpiece and a worktable, current is galvanized in the weld seam direction of the workpiece, the current and the weld seam through which the current flows produce resistance heat with the contact resistance of a friction stirring welding area, and the resistance heat together with stirring friction heat forms the hybrid heat source of the stirring friction welding. The method and the equipment of the invention have the following remarkable effects: 1. the limitation of the stirring friction welding on welding materials is broken through, leading the stirring friction welding to be used for welding such structural materials as black ferrous metals, superalloy, and the like; 2. the service life of the stir head can be improved; and 3. welding speed and welding quality can be further improved, thus improving the mechanical property of a welding joint. The method and the equipment of the invention can be used for the stirring friction welding, the preheating before welding, and the postweld heat treatment of such structural materials as carbon steel, stainless steel, and superalloy, etc.

There is provided a heating element for a hair styling device, including an electrically insulating inner ceramic layer, an electrically conductive resistive heating layer disposed on and in contact with the inner layer, and an electrically insulating outer ceramic layer disposed on and in contact with the resistive heating layer. There is also provided a method for manufacturing the heating element. There is further provided a hair setting device for curling hair including the heating element a cylindrical barrel surrounding the heating element.

The invention relates to a polyfluortetraethylene nanofibre membrane and a preparation method thereof. The aperture distribution of the polyfluortetraethylene nanofibre membrane is concentrated within a range of + / -100 nanometers and occupies more than 90 percent of the total volume of each level aperture; the stretching process of the preparation method adopts low-temperature segmenting stretching, thus the stretching temperature is stable, the polyfluortetraethylene nanofibre membrane is uniformly heated, and giant molecule segmers are equally unfolded; the produced polyfluortetraethylene nanofibre membrane has concentrated aperture distribution and high uniformity so as to generate high water pressure resistance, long water resistant time and high membrane fibering degree, and the obstructing efficiency of bacteria reaches more than 99.99 percent, thereby the polyfluortetraethylene nanofibre membrane can meet the requirement of oil-water separation and high-end gas filtration of anoperation isolation mattress with high-pressure steam filtration and high water pressure resistance and can be used in fields of superclean room entering air filtration, and the like, such as medicaltreatment and health protection, health matter cultivation, semiconductor devices, integrated circuit, medicine, and the like.