89 results about "Convective heating" patented technology

Apparatus, system and method for simultaneously drying a coating on a substrate using at least two different drying phenomena, for example, inductive heating and convective heating, or inductive heating and a combination of convective heating and infrared heating. A coating on a substrate is dried by generating heat in the substrate while simultaneously applying convective heat and / or radiant heat to the coating. Simultaneous drying refers to drying of the same region of a substrate at the same time, and in a particular embodiment, subjecting the same region of a substrate to inductive heating and convection at the same time. Preferably the substrate is at least partially conductive.

A seat includes a seat back and a headrest, an aesthetic covering that includes at least one hole for communicating fluid to a seated occupant, an inflatable support that is arranged in the seat back, an infrared heater that is arranged in a cavity beneath the at least one aesthetic covering, and a pump that is in fluid communication with the lumbar support and the cavity. The pump is configured to supply a fluid to the cavity to pass through the infrared heater and out the at least one hole.

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.

A converted gas-fired furnace includes at least one lower radiant heating zone, an upper convective heating zone, electric ceramic fiber heaters, and duct heaters. The lower radiant heating zone includes a plurality of lower tubes configured to carry a fluid to be heated. The upper convective heating zone includes a plurality of upper tubes configured to carry the fluid to be heated. The electric ceramic fiber heaters are disposed within the lower radiant heating zone and are configured to heat the fluid in the lower tubes. The duct heaters are configured to heat the fluid in the upper tubes.

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 invention provides circulating convection heating type glass tempering equipment, and relates to the technical field of glass tempering equipment, the circulating convection heating type glass tempering equipment comprises a main heating tempering box body, a rear sealing plate frame, a front sealing plate frame and a conveying frame, the rear side of the main heating tempering box body is in sliding connection with the rear sealing plate frame in the vertical direction, and the front sealing plate frame is in sliding connection with the conveying frame; a front sealing plate frame is slidably connected to the front side of the main heating tempering box body in the vertical direction, side U-shaped air ducts are arranged at the upper part and the lower part of the main heating tempering box body, upper circulating fans are arranged at the top and the bottom of the main heating tempering box body, upper air outlets are formed in the upper parts of the side U-shaped air ducts at the upper part of the main heating tempering box body in a penetrating manner, and lower air outlets are formed in the lower parts of the side U-shaped air ducts at the upper part of the main heating tempering box body; lower air inlets are formed in the two sides of the side U-shaped air channel. The upper and lower circulating fans drive airflow to contact the upper and lower surfaces of the glass, so that the upper and lower surfaces of the glass are uniformly heated, the temperature uniformity of the surface of the glass is improved, and the problem of large temperature difference between the upper and lower surfaces of the glass caused by a single-side radiation heating or single-direction convection heating mode of existing glass toughening equipment is solved.

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 utility model discloses a convection heating device for a glass tempering heating furnace. A plurality of air guide holes are formed in an air guide plate; the air guide hole penetrates through the air guide plate; the air outlet plate is provided with a plurality of concave heating grooves and a plurality of air outlet holes; the multiple heating grooves are arranged at intervals in the width direction of the heating furnace. At least one group of heating wires are distributed in each heating groove; the bottom face of the air guide plate abuts against the top face of the peripheral groove wall of the heating groove. The plurality of air guide holes are divided into a plurality of groups, a group of air guide holes are correspondingly distributed right above each heating groove, and the plurality of air guide holes in the same group are arranged at intervals; the plurality of air outlet holes are divided into a plurality of groups, a group of air outlet holes are correspondingly formed in the groove bottom of each heating groove, and the plurality of air outlet holes are uniformly distributed and penetrate through the groove bottom of the heating groove. By adjusting the input current and the input voltage of the heating wire in the corresponding heating groove, the temperature of the hot air flow output by each heating groove is matched with the heat absorption characteristic and the temperature distribution condition of the corresponding part of the glass to be heated.

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.

A neonate care station is described herein that includes a support platform for housing a neonate and a modulating heater. The modulating heater can include a heater element coupled to a first reflective dish, wherein the heater element and the first reflective dish are configured to modulate to provide thermally conditioned air to the support platform using a convective heating technique in an incubator setting or radiant heat using a radiant heating technique in a radiant heating setting.

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.

A laser drying apparatus efficiently directs laser energy at a target media in an industrial environment. Typical industries include food production, continuous paper and sheet goods, and other suitable porous articles where moisture content is abated. A laser passes through a lens or beam shaping element for directing the laser energy incident upon the target media for drying. A beam-shaped form is preferable for even energy distribution over an area of the target media. Focused, beam shaped laser energy provides more efficient energy transfer to the target media over conventional radiant and / or convection heating. Electrical sources may be selected from environmentally favorable generation sources. The laser energy penetrates the target media to a depth greater than conventional heating methods, and may be combined with complementary heating and drying sources, such as convective air streams or radiated heating for receiving an aggregate drying energy by the target media.

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.

Food preparation appliance arranged to provide at least a first cooking mode comprising a pressure cooking step and at least a second cooking mode comprising a step of heating the food by convection, the food preparation appliance comprising at least: - a housing (10), - a tank (30), - a main cover (20), movable between a closed position and an open position, - removable sealing means, arranged between the housing (10) and the main cover (20) to allow the first cooking mode, in which the tank (30) comprises at least one tank handle (30A), said at least one tank handle (30A) being arranged between the housing (10) and the main cover (20), characterized in that the main cover (20) comprises a clearance located above the at least one tank handle (30A). Figure for abstract: Fig. 2

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.

The present invention relates to the field of glass processing technology, and discloses a tempering furnace for reducing tempering stress spots, comprising a furnace, a convection bellows, a ceramic roller, a radiation plate, and an electric heating wire. The furnace is wrapped with a heat-insulating material, is hollow inside, and is sealed on all sides, with glass plate entrances and exits left at the front and back; the ceramic roller is located in the middle of the furnace, and is arranged horizontally and perpendicularly to the direction of glass plate entry and exit; the convection bellows is located at the top of the furnace, the electric heating wire is located at the bottom of the furnace, and the radiation plate is located between the ceramic roller and the electric heating wire. Through holes are evenly distributed on the radiation plate, and the ceramic roller can be evenly radiated after being heated. The tempering furnace for reducing tempering stress spots heats the radiation plate through the electric heating wire at the bottom of the furnace, and then the ceramic roller is heated by heat radiation from the radiation plate, and then the lower surface of the glass plate is heated by conduction heating by the ceramic roller; at the same time, the hot air flow is circulated through the convection bellows to perform convection heating on the upper surface of the glass plate.

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.

To provide a food preparation appliance that does not present any risk of discomfort and / or burns during its operation and / or use.SOLUTION: A food preparation appliance designed to provide at least one first cooking mode comprising a pressure cooking step and at least one second cooking mode comprising a step for heating food by convection comprises at least: a housing (10); a container (30); a main lid (20) which can be moved between a closed position and an open position; and removable sealing means arranged between the housing (10) and the main lid (20) to allow the first cooking mode. The container (30) comprises at least one container handle (30A) arranged between the housing (10) and the main lid (20). The main lid (20) comprises a clearance located above the at least one container handle (30A).SELECTED DRAWING: Figure 2

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.