62 results about "Convective heating" patented technology

The invention discloses a heat pipe thermophysical property testing device, system and method based on liquid cooling flow equalization, and the device comprises a liquid cooling flow equalization system which is provided with a plurality of parallel and mutually isolated flow channels, and a condensation section of a to-be-tested heat pipe is inserted into a liquid cooling cavity to form forced convection; an upper heating block and a lower heat insulation block of the heating unit clamp and fix an evaporation section of the heat pipe to be tested; the liquid cooling flow equalizing system is arranged on the inclination angle adjusting mechanism; the data acquisition unit comprises temperature sensors which are respectively arranged at liquid inlets and liquid outlets of the flow channels, and at least two temperature sensors which are arranged at a heat insulation section of the heat pipe to be tested; according to the system, a circulating water bath device, a high-pressure constant-flow pump, a filter and a testing device form a closed-loop liquid path. The real heat transfer amount of the heat pipe is inversely calculated through the heat absorption amount of the cooling liquid, the equivalent heat conductivity coefficient and the limit power are obtained by combining the two-point temperature difference of the heat insulation section, multiple heat pipes of different specifications are tested in parallel at a time, and the test efficiency and the data accuracy are improved.

The invention provides an interference area thermal environment simulation test device and method based on radiation and convection coupling. The interference area thermal environment simulation test device comprises a convection heating system, a radiation heating system, a test section, a model support and a vacuum system. The aerodynamic heat environment of a non-interference area is simulated through the convection heating system, and a local high heat flow interference area is formed by the radiation heating system through the water-cooling filter plate, so that independent control and coupling simulation of heat flows of the two areas are realized. According to the method, heat flow parameters of a non-interference area and an interference area are debugged step by step, and multiple test steps are connected in series to complete all-working-condition assessment. The method can accurately reproduce the high-heat-flow gradient characteristics of the local area of the surface of the aircraft, overcomes the limitation that a traditional test method cannot simulate the high-heat-flow gradient, remarkably improves the authenticity and refinement level of a ground test, provides reliable data support for the design of a heat-proof structure of the hypersonic aircraft, effectively reduces the design redundancy, and improves the design efficiency. And flight safety is guaranteed.

A heating module comprising a housing and a sensor. The housing comprises a first portion in which a printed circuit board assembly is located, a second portion in which a heating element is located, and a channel extending from the first portion toward the second portion. The sensor is connected to the printed circuit board assembly via a wire extending through the channel and is exposed at an end of the channel.

The application relates to the technical field of glass production, and particularly discloses thick plate glass, a preparation method thereof and application. The preparation method comprises the following steps: preheating: after the glass is placed, the glass is preheated in a preheating furnace, the upper surface preheating temperature of the preheating furnace is set to be 320-360 DEG C, the lower surface preheating temperature of the preheating furnace is set to be 310-350 DEG C, and the preheating convection fan rotating speed efficiency is set; heating: after the glass is preheated, the glass is heated in a heating furnace, the glass moves in the heating furnace, the upper surface heating temperature of the heating furnace is set to be 680-690 DEG C, the lower surface heating temperature of the heating furnace is set to be 670-680 DEG C, and the thick plate glass is prepared after the heating is completed. The application reduces the loss of the furnace corner part of convection, increases the heating efficiency of the middle part of convection, thereby improving the overall quality of the thick plate glass, reducing the thermal spot and the white mist appearing in the middle part of the glass. In addition, the heating is more reasonable, electricity is saved, and the production cost is reduced.

The utility model discloses an efficient and even heating oven, which relates to the technical field of ovens, and comprises an oven body, an electric heating plate used for contact type heating is mounted at the inner bottom of the oven body, an upper heating assembly used for radiation and heat convection heating is mounted at the inner top of the oven body, an oven tray is placed in the oven body, and a lower heating assembly used for radiation and heat convection heating is mounted at the inner top of the oven body. An opening of the baking tray faces upwards, the bottom of the baking tray makes contact with the electric heating tray, the upper heating assembly comprises an assembling frame, a plurality of strip-shaped open holes are formed in the lower surface of the assembling frame, an electric heating radiation pipe is installed in the assembling frame, a cover plate is installed above the assembling frame, and a second temperature sensor is installed on the outer wall of the cover plate. The problems that when an existing oven is used, although the temperature rising efficiency is improved through a graphene coating, heat needs to be blown to food through a fan after temperature rising, in the process, heating is conducted completely depending on gas convection generated by the fan, and the efficiency is low are solved.

The invention discloses a liquid hydrogen heat exchange experimental device, which relates to the field of aero-engines and comprises a liquid hydrogen loop, a nitrogen heating loop, a test section, a measurement and control module and a safety protection module, wherein the liquid hydrogen loop is used for providing supercritical hydrogen meeting a preset working condition; the nitrogen heating loop is used for heating nitrogen to a target working condition temperature and providing a convection heating environment for the test section; the test section comprises a straight pipe type sealing sleeve, supercritical hydrogen circulates in an inner pipe of the straight pipe type sealing sleeve, and high-temperature nitrogen circulates in an outer pipe of the straight pipe type sealing sleeve; the measurement and control module comprises a controller, and the controller and the heater are configured to dynamically adjust the flow of hydrogen and nitrogen and the heating power of nitrogen so as to simulate transient working conditions; the safety protection module is used for conducting steady state judgment and safety monitoring according to data collected by the liquid hydrogen side sensor and the nitrogen side sensor. According to the invention, the convective heat transfer performance of supercritical hydrogen can be accurately measured under low-temperature, high-pressure and safe conditions, and reliable experimental support is provided for thermal management of a hydrogen fuel aero-engine.

The application discloses a heat radiation type energy-saving and environment-friendly scrap steel preheating system, which comprises horizontal preheating conveying mechanisms and vertical preheating conveying mechanisms, wherein the vertical preheating conveying mechanisms are connected with the horizontal preheating conveying mechanisms; the vertical preheating conveying mechanisms comprise vertical shaft stock bins, and a windproof system is arranged on the vertical shaft stock bins; the windproof system comprises a windproof pipe, a material blocking mechanism, a dynamic sealing mechanism and a convection heating windproof mechanism. The application improves the preheating temperature of the scrap steel, saves the power consumption of the electric furnace per ton of steel, shortens the smelting time, enables the scrap steel preheating to reach safety and stability, maximally recycles the heat generated after smelting, and greatly improves the heat utilization rate.

Hybrid rotary oven for use with a method for baking food products using the hybrid rotary oven, the method comprising: - rotating a removable vertical unit (15) containing multiple food products positioned above each other around a vertical axis within a baking chamber (14); - simultaneously applying convection heating, using heating unit (7), by circulating hot air (13) through the removable vertical unit (15) and applying infrared radiation by operating one or more infrared heating units (1, 2); - controlling the one or more short-wave infrared heating lamps (1) to direct infrared radiation onto the food products as the removable vertical unit (15) rotates.

The invention provides a control method and device of cooking equipment, a readable storage medium and the cooking equipment, and relates to the technical field of cooking equipment. The control method comprises the following steps: in response to a cooking instruction, controlling the cooking equipment to execute cooking operation; wherein the cooking operation comprises convection heating operation and radiation heating operation, and the fan rotating speed corresponding to the convection heating operation is greater than the fan rotating speed corresponding to the radiation heating operation; under the condition that the cooking equipment executes the radiation heating operation, the infrared heating piece is controlled to start the heating cooking cavity; under the condition that the cooking equipment executes convection heating operation, a fan is controlled to be started to conduct air turbulence in the cooking cavity. By combining the radiation heating operation and the convection heating operation, the outer surface and the inner part of the food material can be respectively heated, so that the cooking speed of the food material is effectively increased, the cooking time is shortened, and the cooking efficiency of the cooking equipment is improved.

The invention relates to a gear part and a production method and application thereof. The process route of the production method comprises the steps of smelting, rolling, forging, machining, hot charging, cleaning, pre-oxidizing, preheating, carburizing, step quenching and tempering. The carburizing technology comprises the steps that convection heating, vacuum heating, pulse carburizing and vacuum heat preservation are sequentially conducted on the gear part at the carburizing temperature, and then heat preservation diffusion is conducted at the temperature 20-50 DEG C lower than the carburizing temperature; the step quenching technology comprises the steps that high-pressure nitrogen is adopted for purging the gear part, and the gear part is cooled in two stages. By improving the 20CrMnTi steel and the quenching process after carburization, the content of bainite which is not easy to expand in a matrix is increased, so that the thermal deformation is reduced, the tooth grinding amount in subsequent processing is reduced, and the production cost is remarkably reduced.

The invention discloses an oil-rich coal in-situ pyrolysis system and method for multi-fluid synergistic heat supply and coke suppression and oil increase. The system adopts an orthohexagonal underground pyrolysis network comprising a combustion input / output well, a heat injection well and a production well, in-situ controllable combustion is utilized to release heat, and high-temperature supercritical CO2 is coupled to perform convection heating on a coal seam; low-temperature supercritical CO2 is sprayed in an independent fluid channel of a production well and is in direct contact with a pyrolysis product for heat exchange, and a liquid collecting and heating pumping device at the bottom of the well is matched, so that secondary reaction of tar is effectively inhibited, and the flowability is improved; superheated steam pulse type injection is adopted, carbon deposition is removed under the action of a catalyst bed layer, coking is blocked, pores are dredged, and after pyrolysis is finished, steam is continuously injected to achieve gasification exploitation of residual semicoke. The system integrates the functions of combustion heat supply, supercritical CO2 heat carrying / shock cooling, steam gasification coke suppression, multi-stage waste heat recovery and the like, and the tar yield, quality and energy utilization efficiency of oil-rich coal in-situ mining are remarkably improved.

This utility model relates to the field of metal sheet processing technology and discloses a rapid spray coating and drying device for metal sheet surfaces. It includes a spray mounting base, with two sets of protective railings fixedly installed on the outer wall of the base in a symmetrical arrangement. The base is U-shaped, and a control display box is fixedly installed on the outer wall of the protective railings. By incorporating a warm air accelerator fan and a convection heating layer to form a hot air circulation system, the thin sheet is heated evenly on both sides, shortening the drying time and improving efficiency compared to traditional static drying. Simultaneously, a lifting baffle allows for independent drying of individual sheets, preventing heat loss. Combined with precise temperature control using heating resistance wires, energy consumption is reduced. A breathable plate and ventilation holes accelerate moisture removal, ensuring drying quality. The adhesion of the cured coating is improved, effectively enhancing the protective and decorative properties of the metal sheet and achieving the effect of improved drying efficiency.

The invention relates to the technical field of electric kilns, in particular to a circulating convection heating type glass electric kiln which comprises a smelting furnace, a flow guide pipe is installed on the surface of the smelting furnace, an air flow conveying assembly driven by a driving part is assembled at the air inlet end of the flow guide pipe, and the air outlet end of the flow guide pipe communicates with the interior of the smelting furnace in the tangential direction of the smelting furnace. The air outlet end of the flow guide pipe is fixedly connected with a flow guide plate, two guide blades are rotationally installed in the flow guide pipe, the movable ends of the guide blades are close to the air outlet end of the flow guide pipe, the upper wall face and the lower wall face of the flow guide pipe are rotationally connected with transversely-arranged rotating shafts, and one ends of the two guide blades are fixedly connected with the rotating shafts respectively. The invention aims to solve the problem that the stability of a glass melting and clarifying process is finally influenced by insufficient heat exchange and non-uniform temperature of different areas in a furnace due to incomplete air flow coverage and unbalanced distribution caused by the design of a single air outlet of the existing equipment.

The present invention relates to an insulating device comprising an insulating body consisting of a hollow tube or solid cylinder made of ceramic or composite material and an unvulcanized extruded HCR / HTV silicone shielding shell. The present invention further relates to the use of a novel vulcanization method for crosslinking the addition-curing silicone elastomer used. According to the invention, infrared heat emitters (Fig. 2) are used for this vulcanization method, arranged radially at a defined distance around the rotating insulating device. The method comprises (a) providing an insulating body, (b) applying an adhesion promoter (primer) to the insulating body, (c) extruding the silicone profile onto the primed insulating body, (d) repairing and finishing the unvulcanized HTV silicone shielding shell, and (e) vulcanization with infrared heat emitters having a multi-stage temperature profile.The multi-stage vulcanization process prevents the formation of bubbles and foam in the silicone structure, which are detrimental to the electrical properties. In the first stage, reaction gases can diffuse through the not yet fully vulcanized silicone surface. In the second temperature stage, the silicone is completely vulcanized. The silicone material must be chemically adjusted to this process in terms of its reactivity (vulcanization curve). Unlike convection heat in conventional autoclave or oven processes, infrared heat radiation penetrates deep into the material, resulting in excellent adhesion of the silicone to the insulating body. This allows for vulcanization within the silicone volume, preventing bubble formation caused by reaction gases, as these gases can still escape through the open surface.

The utility model discloses a convection heating structure of a glass tempering furnace, which belongs to the technical field of convection heating of glass tempering furnaces, and is characterized in that the convection heating structure comprises a tempering furnace main body, the front side of the tempering furnace main body is fixedly connected with a heating mechanism, and the top of the tempering furnace main body is fixedly connected with an auxiliary mechanism; the heating mechanism comprises a high-temperature fan, a limiting seat, a plurality of convection pipes, a plurality of heating elements, a heating cavity, a mounting plate, a main air pipe and an air outlet pipe, the convection pipes and the heating elements are arranged at intervals, the high-temperature fan is matched to drive hot air circulation, efficient convection heating of the glass is achieved, and compared with a traditional mode, the heating efficiency of the glass is improved; the temperature sensor and the PLC work cooperatively, real-time monitoring can be achieved, the power of the heating element and the rotating speed of the high-temperature draught fan can be automatically adjusted according to the set temperature value, it is ensured that the heating process is accurate and stable, and the heating requirements of different pieces of glass are met.

An embodiment of the present application provides a non-magnetic energy-saving forced convection heating furnace, comprising: a Venturi assembly, a heating device, and a heating chamber, wherein the Venturi assembly comprises: a base, an internal accommodating space formed therein, a first inlet and a second inlet provided on the base, the first inlet being used to input air at room temperature; a conduit provided in the accommodating space, one end of the conduit being connected to the first inlet; a nozzle being connected to the other end of the conduit; and a Venturi tube body, comprising an inlet section, a contraction section, a throat, and a diffusion section in sequence, the inlet section being sealedly connected to the base, wherein the output end of the nozzle extends into the contraction section and is arranged adjacent to the throat and connected to the diffusion section. The heating device is connected to the diffusion section and is isolated from the heating device, a third inlet of the heating chamber is connected to the heating device, and the heating chamber is provided with a first outlet and a second outlet, the second outlet being connected to the second inlet.

The invention relates to a device for carrying out an endothermic reaction of a gas feed, said device comprising:-a preheater (11) arranged to preheat said gas feed,-at least one reaction tube (22),-a furnace (21) arranged to radiatively and / or convectively heat said at least one reaction tube (22), the invention relates to a reactor (1) for producing a gas, comprising a furnace (21) comprising at least one reaction tube (22) at least partially filled with a catalyst material (30) configured to promote an endothermic reaction, the at least one reaction tube (22) comprising:-a tube inlet for a preheated gas feed,-a main reaction tube portion (34) extending inside the furnace (21) and a pre-reaction tube portion (33) extending outside the furnace (21), the pre-reaction tube portion (33) is arranged between the tube inlet and the main reaction tube portion (34), where a portion of the catalyst material (30) extends within the pre-reaction tube portion (33).

Apparatus for the endothermic reaction of a gas feed, the apparatus comprising: a pre-heater arranged for pre-heating the gas feed, —at least one reactor tube, —a furnace arranged for the radiation and / or convection heating of said at least one reactor tube, said at least one reactor tube being at least partially filled with a catalyst material configured for promoting the endothermic reaction, said at least one reactor tube comprising a tube inlet for said pre-heated gas feed, —a main reaction tube portion extending within said furnace and a pre-reaction tube portion extending outside of the furnace, said pre-reaction tube portion being arranged between the tube inlet and the main reaction tube portion, wherein part of the catalyst material is extending within the pre-reaction tube portion.

A capsule for an aerosol-generating device may include a housing defining inlet openings, outlet openings, and internal channels between the inlet openings and the outlet openings. The internal channels are configured to hold an aerosol-forming substrate. The housing is configured to facilitate a heating of the aerosol-forming substrate via conduction and / or convection so as to generate an aerosol.

The hot air in the gap passes by convection through the gap between the inner surface of the cooking pot and the outer edge of the baking body, passing through the passage notch and upward to the baking body, and the hot air in the gap passes by convection through the passage hole and upward to the baking body.As a result, the pizza food placed on the baking body is heated by the conductive heat of the baking body and the radiant heat of the gap, and is heated by the convection heat of the hot air convectionally passing through the passage notch and passage hole, and the pizza food can be heated by conductive heat, radiant heat, and convection heat. [Solution] The baking body 1, which is installed on the bottom WB of the cooking pot W and on which pizza food P is placed and baked, is formed in a plate shape consisting of a pizza food placement area and a large diameter outer periphery surrounding the placement area, and the baking body is formed with legs 2 that place the baking body on the bottom surface W1 of the cooking pot with a gap G, and a pass-through notch is formed on the outer edge of the large diameter outer periphery of the baking body, and a pass-through hole is formed on the large diameter outer periphery of the baking body.

The invention provides an electronic heating core, an electronic heating device and an electronic heating control method, and relates to the field of electronic heating devices. The invention provides an electronic heating core. The electronic heating core provided by the embodiment of the invention comprises a heat conductor, a cover body, a first heating assembly and a flow guide plate, a paste containing cavity with a top opening is formed in the heat conductor, a plurality of air inlet channels are distributed on the outer side in the circumferential direction, and air outlet channels are formed between the adjacent air inlet channels. Notches communicated with the containing cavity are formed in the inner sides of the top ends of the two channels. The cover body covers the outer edge of the top end of the heat conductor; the first electric heating sheet is fixed on the outer side wall of the heat conductor to heat the heat conductor; the guide plate is arranged on the inner side of the cover body and extends into the containing cavity to separate the air inlet channel from the air outlet channel. The heat conductor is heated through the first electric heating sheet, so that the paste is conducted and heated, and air flow in the air inlet channel is heated. The guide plate forces the hot air flow to flow along the extension direction, thereby increasing the contact time and area with the surface of the paste, and improving the heat convection heating effect and the paste component entrainment rate.

A multi-tier rack assembly for use in an oven including a cooking chamber, a convective heating system configured to provide heated air into the cooking chamber, and a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber may include a bottom tier rack and a top tier rack. The bottom tier rack may be removable / insertable relative to the cooking chamber to be supported at a bottom wall of the cooking chamber. The bottom tier rack may include a first frame including a plurality of first frame members that surround a first grate structure. The top tier rack may be removable / insertable to be supported by the bottom tier rack. The top tier rack may include a second frame including a plurality of second frame members that surround a second grate structure. Each of the bottom tier rack and the top tier rack may define a lateral gap proximate to sidewalls of the cooking chamber and a rear gap proximate to a back wall of the cooking chamber to permit, along with the first and second grate structures, airflow vertically through, along sides, and along a back of the bottom and top tier racks, respectively.

The utility model is suitable for constant temperature and humidity box range technical field provides a constant temperature and humidity box, including box, be used for to material constant temperature and humidity, heat exchange component sets up in the box, be used for to the heat exchange of box, heat exchange component includes, cooling box, fixed mounting is in the box, heating box, fixed mounting is in the box, heating box fixed mounting has heating rod, delivery pump, fixed mounting is in the box, its liquid inlet fixed mounting has first three -way valve, through the setting of heat exchange component, to realize the control of temperature to the box, and can according to the situation of use, to switch the heat absorption cooling or heat conduction heating of box, make its to the uniformity of heat conduction in the box interior is good, and the convection heating mode can also make the constant temperature effect in the box interior is better, integrated heat exchange equipment, need not to install two separate heating and refrigeration equipment to the box, reduced the cost of box use.

The utility model discloses a modular transparent warmer, which comprises a transparent heating assembly composed of at least two pieces of parallel and spaced heating glass, and a frame assembly for containing and supporting the assembly. An air cavity is formed between the two pieces of heating glass. The lower and upper parts of the frame assembly are respectively provided with an air inlet and an air outlet in communication with the air cavity to form an air convection channel. The frame assembly comprises a plurality of frame strips and a plurality of corner connectors for connecting the frame strips. The frame assembly and the transparent heating assembly are detachably connected to form a disassemblable frame. The utility model combines the high-efficiency convection heating structure with the modular disassemblable frame, which not only utilizes the "chimney effect" to achieve quiet and efficient whole-house heating, but also solves the problem of difficult replacement and high maintenance cost of the core double-glass heating assembly when it is damaged.

A cooking appliance includes a cabinet defining a cooking chamber, an air inlet on a wall of the cooking chamber, and a convective heating module disposed within the cabinet. The convective heating module includes a heating element, a heat exchanger, and a convection fan fluidly coupled to the air inlet for circulating air through the cooking chamber.

An oven may include a cooking chamber configured to receive a first food product, a convective heating system configured to provide heated air into the cooking chamber, a radio frequency (RF) heating system configured to provide RF energy into the cooking chamber, and processing circuitry configured to execute a recipe defining cooking parameters for cooking the first food product. The cooking parameters may define operational settings for the convective heating system and the RF heating system and a nominal cooking time for a first batch including the first food product. The processing circuitry may be operably coupled to a mass adjustment module configured to determine, based on an indication of an addition of a second batch comprising a second food product to the cooking chamber, an overlap period during which the first and second food products are simultaneously cooked and a completion time for cooking the second food product after the overlap period.

The utility model relates to double-sided fluffy bedding fabric drying equipment, which belongs to the technical field of fabric drying and comprises a drying box, supporting plates are fixedly connected to two sides of the drying box, an unwinding roller is fixedly mounted at the top of one supporting plate, and a winding roller is fixedly mounted at the top of the other supporting plate. The fabric drying device has the advantages that hot air can be rapidly distributed in the whole drying box by starting the air blower and the round electric heating plate, the purpose of conveying fabric can be achieved through the unwinding function of the unwinding roller and the winding function of the winding roller so that the fabric can enter the drying box full of the hot air, and the drying efficiency is improved. Compared with a traditional conveying belt conveying mode, a heating area does not need to make contact with foreign objects, the heating area is wider, heating is more uniform, the two fixing pipes are designed to be heated in a convection mode, one side of the fabric can be dried at the same time, secondary turning over is not needed, and then the drying efficiency of the fabric can be improved.

Vaporizer devices, various components used with the vaporizer devices and methodologies for operating the vaporizer devices are disclosed herein. A cartridge can be removably coupled with a vaporizer body, where the carridge includes at least one heating element (342) configured to convectively heat in lieu of or in combination with conductively heating at least one vaporizable material disposed within the cartridge. Methods of convectively heating at least one vaporizable material in lieu of or in combination with conductively heating are disclosed herein.

The invention discloses a multi-stage control method for co-producing trichloroethylene and tetrachloroethylene by cracking tetrachloroethane. The multi-stage control method comprises the following steps: S1, preheating a tetrachloroethane raw material to 250-300 DEG C; s2, mixing the preheated tetrachloroethane and chlorine according to a molar ratio of (15-11): 1; s3, the mixed materials are introduced into a first tubular reactor, a first-stage cracking reaction is carried out under the radiation heating and convection heating composite heat supply condition, the reaction pressure is controlled to range from 0 KPa to 100 KPa, the reaction temperature is controlled to range from 380 DEG C to 450 DEG C, and an intermediate product containing trichloroethylene and tetrachloroethylene is generated. The contradiction that the conversion rate and the selectivity in a single-section reactor are difficult to collaboratively optimize is effectively overcome, and the total yield of a target product is greatly improved; by introducing a real-time online monitoring and feedback linkage regulation and control mechanism, accurate and flexible control of the generation proportion of tetrachloroethylene is realized, and the response capability of the process to the market demand is enhanced.