46 results about "Forced air convection" patented technology

A thermal module system for LED headlamp module includes a LED module, heat produced by which is transmitted via a heat conductive element to a heat sink module and dissipated. The heat sink module is arranged in an air passage in a car, such as behind a front bumper, at an inner side of the front fender of said car, or in front of the radiator. Heat insulating material is provided around the LED module to prevent high temperature of an engine compartment from being transmitted to the LED module. The air passage has vents provided on the front bumper and the front fender of said car, so that the heat sink module has enhanced thermal performance due to natural or forced air convection. A fan or water sprayer may be provided near the heat sink module to improve the thermal performance. Therefore, the LED module may work at a lowered ambient air temperature to have a prolonged lifetime.

A grilling device includes an oven section and a warming cabinet in thermal communication with the oven section. The oven section is directly heated by a heating mechanism, but the warming cabinet is heated indirectly by heat transferred from the oven section. The warming cabinet is disposed below the oven section such that heat from the oven section is transferred passively via conduction and radiation into the warming cabinet and is transferred actively via forced air convection as an air moving element forces air past an optional heat sink and / or other heating component(s) and into the warming cabinet. The air moving element also provides air to ignite and maintain a burning fuel source of the heating mechanism. The grill can include a utility shelf disposed below the warming cabinet, the space between the utility shelf and the bottom of the warming cabinet defining a utility space.

Ventilated roofing tiles along with other multilayered energy saving and / or producing constructions are disclosed. Also disclosed are insulating bonding constructions having enhanced energy saving attributes. The ventilated roofing tiles employ heat transfer means that may include natural and / or forced air convection.

A grilling device includes an oven section and a warming cabinet in thermal communication with the oven section. The oven section is directly heated by a heating mechanism, but the warming cabinet is heated indirectly by heat transferred from the oven section. The warming cabinet is disposed below the oven section such that heat from the oven section is transferred passively via conduction and radiation into the warming cabinet and is transferred actively via forced air convection as an air moving element forces air past an optional heat sink and / or other heating component(s) and into the warming cabinet. The air moving element also provides air to ignite and maintain a burning fuel source of the heating mechanism. The grill can include a utility shelf disposed below the warming cabinet, the space between the utility shelf and the bottom of the warming cabinet defining a utility space.

A method of performing cardiac surgery on a patient's heart, including covering a patient with an inflatable blanket for a forced air convection system, the inflatable blanket having at least one separable seal line within the blanket. The separable seal line may be separated to form a slit. A patient's femoral artery is accessed through the slit, and an elongate medical instrument is passed through the slit, and through the femoral artery toward the patient's heart. Cardiac surgery is performed with the elongate medical instrument, and the elongate medical instrument is withdrawn from the femoral artery through the slit.

The invention concerns a lighting and / or signalling device for motor vehicles comprising a housing equipped with a plurality of light emitting diodes mounted on a movable plate, at least one device for cooling the said diodes, comprising at least one first fixed heat sink, at least one second movable heat sink, and at least one means for effecting a forced air convection between the first radiator or heat sink and the second radiator or heat sink.

It is presented a heat managing device for a light source (100) which combines heat managing by means of a heat sink, heat pipes and forced convection, thereby achieving efficient cooling of high power lighting applications. The heat managing device comprises a heat spreading element (104) having an upper side arranged for thermally connecting to at least one light source (106). The light emitted from the light source is controlled by secondary optics (103). The heat managing device comprises a heat sink which is thermally connected to the heat spreader, and to a first set of heat pipes which is thermally connected to the heat spreader. At least a portion of the heat sink is arranged to encompass the secondary optics. The heat pipes are embedded in the heat sink. Further, a fan for providing forced air convection at the heat sink is comprised in the device. A corresponding lighting device is also presented.

An active temperature controlled modular shipping container may be in the active mode during flight. The container is also desirable for use in overland shipping operations as it provides accurate temperature control superior to known systems during transportation. The container can maintain a fixed temperature within 2° C. in ambient temperatures ranging from −20° C. to 49° C., using an integrated forced-air convection system for heating and cooling the cargo space of the container. The preferred embodiment of the container operates on rechargeable batteries and can maintain the selected temperature for at least 72 hours without recharging.

A passive thermoacoustic cooling apparatus for cooling of components such as miniaturized microelectronics is disclosed. The passive thermoacoustic cooling apparatus includes resonant cavities, a temperature-difference element and a heat conduction element. The temperature-difference element is integrated with the system of resonant cavities for conversion of heat into acoustic power. The heat conducting element connects a heat source to the temperature-difference element, which transmits heat from the source to one end of the temperature-difference component. Due to established temperature gradient across hot and cold ends of the temperature-difference element, acoustic standing wave arises in the resonant cavity system. Forced air convection is thereby generated to cool the heat source.

A multi-layer piezoelectric actuator with conductive polymer electrodes is described. The piezoelectric actuator comprises a stack of alternating conductive electrode layers and piezoelectric layers. The conductive electrode layers are comprised of a polymeric electrically conductive material. A device for cooling by forced-air convection may comprise the piezoelectric actuator, a fan blade and an alternating current supply. The piezoelectric actuator coupled with the fan blade and the alternating current supply, which is provided for vibrating the fan blade. A method of cooling by forced-air convection comprises supplying an alternating current to the piezoelectric actuator, wherein the alternating current has a frequency and causes the fan blade to vibrate with the same frequency.

A power connector that uses ambient air to cool exposed power conductors through the use of either passive or forced air convection. The power conductors in the power connector are distributed for maximum contact with the cooling air. The power connector's housing is designed to cause maximum air flow across and / or against the power conductors.

A three part laminated material for use in making blister packages and a method of making such a material. The material is comprised of a central core layer of poly chloro-tri-fluoro ethylene to each side of which a separate polymer film is adhesively attached. The method of making the material involves use of a corona treater, a vertical forced air convection dryer, a horizontal convection dryer, a motor driven rewind, a chilled cylinder, a primary unwind and at least one laminating unwind. In the preferred embodiment, each of the polymer films is polyvinyl chloride, although a variety of different films may be used. The disclosed material provides a high moisture barrier, a stable inter-laminar structure and outer surfaces which lend themselves well to bonding with other materials.

The invention discloses a heat-dissipation assembly suitable for a standard 4U cabinet. The heat-dissipation assembly comprises a heat-conducting plate arranged in the cabinet. The heat-conducting plate is connected with a cabinet plug-in panel; the heat-conducting plate is embedded by a plurality of heat-conducting pipes; the heat-conducting pipes conduct heat to the plug-in panel; a heating element in the cabinet is attached to the heat-conducting plate; the cabinet plug-in panel is externally provided with a heat-dissipation fin; and the heat-dissipation fin is internally embedded by a fan. The heat in the cabinet is conducted to the cabinet plug-in panel through the heat-conducting plate embedded with the heat-conducting pipes, and then, the heat is diffused to the air through the heat-dissipation fin and the fan and through forced air circulation without providing holes in the cabinet, thereby reducing dust pollution of the elements in the cabinet, improving device service life, improving reliability and enhancing anti-interference capability.

The invention provides a parallel flow heat exchanger special for an air conditioner, comprising a row of parallel heat exchanging flat tubes, wherein, two interfaces of the heat exchanging flat tubes which are arranged parallel. The invention is characterized in that a collecting tube has a shape of an arc, the connecting line of the center point on the transverse section of the arc-shaped collecting tube is a section of arc, the length of the chord line of the arc ranges from zero to 25 times of the height of the arc, the projection of a pair of connecting lines of the center point on the transverse section of the arc-shaped collecting tube has a structure of parallel line when the projection is a straight line. The invention can design the parallel flow heat exchanger completely having the heat exchanging ability under the circumstance of not changing the size of the prior space and apply the heat exchanger to the situation where the prior parallel flow heat exchanger can not be replaced. The parallel flow heat exchanger special for the air conditioner can be designed with a clear aim according to the adopted structure of an air outlet opening of a flow fan of forced air in the process of heat exchange, thereby greatly improving the heat exchanging efficiency. The parallel flow heat exchanger special for the air conditioner also has the characteristics that the heat exchanging ability is great, the radiating aluminium sheet does not need to be sleeved or welded and the shortcomings caused by the radiating aluminium sheet are eliminated.

The invention relates to a low-temperature heating radiator which comprises one or more sets of plate like heat transportation devices and one or more parallel channel type fin heat exchange structures combined with the plate like heat transportation devices. Each plate like heat transportation device is of a plate like structure formed by extruding metal materials, wherein two or more micro pipes arranged side by side are arranged in the plate like structure, and heat exchange transfer is carried out in the micro pipes through flowing media. Each parallel channel type fin heat exchange structure is attached to the plate surface of the corresponding plate like heat transportation device and provided with a plurality of air convection channels arranged side by side and comprises a parallel channel type sparse fin heat exchange structure. Heat exchange is enhanced by means of the plate like heat transportation devices of the special structures, and the parallel channel type fin heat exchange structures are attached to the plate surfaces of the corresponding plate like heat transportation devices correspondingly, so that natural air convection heat exchange and forced air convection heat exchange can be carried out as needed, the heat exchange efficiency is improved, an effective heating function is achieved, the low-temperature heating radiator has the advantages of being low in temperature, capable of saving energy, low in cost and free of maintenance, and meanwhile precision management and energy saving can be achieved.

Coated French fried potatoes which maintain crispness for at least about 10 minutes. The French fries have at least a 0.1 mm starch-based surface coating and Texture Value of at least about 170 after an extended holding time. The holding time is a measurement based on (1) 4 minutes holding under a heat lamp, (2) 3 minutes holding under a heat lamp in Foodservice serving bags and (3) at least 3 minutes holding in a closed carry-out bag. The par-fries have specific properties which, upon oven-finishing, deliver a unique texture. The coated oven-finished French fries have about 28% to about 50% bulk moisture and from about 8% to about 25% total fat. The par-fried potato strips used to prepare the oven-finished French fried potatoes are coated with a starch suspension. The coating has a low water solubility starch fraction as one of its ingredients. The low water solubility starch fraction has a water solubility index of less than about 30%. The par-fries can be finished in a conventional oven in less than about 10 minutes. The time required to finish the par-fries in a forced air convection oven is less than about 5 minutes. The coated par-fried potato strips have a bulk moisture of about 30% to about 55%, and a total fat of about 6% to about 25%.

The invention concerns a lighting and / or signalling device for motor vehicles comprising a housing equipped with a plurality of light emitting diodes mounted on a movable plate, at least one device for cooling the said diodes, comprising at least one first fixed heat sink, at least one second movable heat sink, and at least one means for effecting a forced air convection between the first radiator or heat sink and the second radiator or heat sink.

The invention provides a high-power flashlight. The high-power flashlight comprises a light emitting assembly and a battery assembly and further comprises a heat dissipation assembly arranged between the light emitting assembly and the battery assembly. The heat dissipation assembly is provided with an air inlet. An outer shell of a lamp body is provided with an air outlet, an LED lamp panel is provided with a plurality of vent holes. The heat dissipation assembly comprises a function bin, a drive plate and an air blowing device, wherein the drive plate is arranged inside the function bin and connected with a battery, the air blowing device is controlled by the drive plate, and the drive plate is provided with a temperature control switch. According to the high-power flashlight, a heat dissipation structure through which heat dissipation of a light source of the high-power flashlight can be facilitated is additionally arranged in a traditional high-power flashlight structure, the forced air convection can be achieved through the additionally arranged heat dissipation assembly to physically cool the LED lamp panel serving as the light source, and therefore an LED lamp chip cannot be burned out, and the high-power flashlight can be used for lighting in a high-power mode for a long time.

The invention relates to a method for enhancing the running durability of a fuel cell. In the method, the service life of the fuel cell is prolonged by setting the shutdown program of the fuel cell. The shutdown program comprises the following specific steps of: (1) keeping hydrogen supply to the anode side of the fuel cell so as to keep fuel hydrogen sufficient; (2) shutting down an air supply fan on the cathode side of the fuel cell; (3) connecting a controllable switch to the output end of the fuel cell, switching off the controllable switch to short-circuit the fuel cell and rising the temperature of the fuel cell to the set temperature in a short-circuited state; and (4) draining water accumulated in a fuel cell stack, stopping the hydrogen supply and lowering the temperature of the fuel cell under the natural condition or forced air convection condition. Compared with the prior art, the method has the advantages of simpleness, good effect and the like.

A multi-layer piezoelectric actuator with conductive polymer electrodes is described. The piezoelectric actuator comprises a stack of alternating conductive electrode layers and piezoelectric layers. The conductive electrode layers are comprised of a polymeric electrically conductive material. A device for cooling by forced-air convection may comprise the piezoelectric actuator, a fan blade and an alternating current supply. The piezoelectric actuator coupled with the fan blade and the alternating current supply, which is provided for vibrating the fan blade. A method of cooling by forced-air convection comprises supplying an alternating current to the piezoelectric actuator, wherein the alternating current has a frequency and causes the fan blade to vibrate with the same frequency.

The invention provides an automobile head lamp with a phase-change inhibition thin plate type radiator. The automobile head lamp comprises a fan, a radiator assembly and an LED light source. The radiator assembly at least comprises the phase-change inhibition thin plate type radiator. The fan is located at one end of the radiator assembly. The LED light source is installed on the radiator assembly. The LED light source is used for replacing a traditional incandescent bulb, so that the luminous efficacy of the automobile head lamp with the phase-change inhibition thin plate type radiator is effectively improved; the phase-change inhibition thin plate type radiator is adopted for replacing an aluminum radiator in the prior art and has the rapid heat conduction feature, and the surface temperature of the radiator is even; meanwhile, the temperature difference between the radiator and the air is large, and the heat release amount is multiplied compared with the conventional aluminum radiator; the phase-change inhibition thin plate type radiator can rapidly conduct heat generated by the LED light source to the remote end and the fan is used for forcing air convection, exchange of heat and air is accelerated, and therefore the problems of large light failure and short service life of an automobile head lamp are solved and the energy efficiency ratio of the automobile head lamp is increased.

The invention discloses a lithium core battery pack with strong heat dissipation. The lithium core battery pack comprises a lithium core fixing seat and lithium core units mounted inside the lithium core fixing seat, wherein the upper part of the lithium core fixing seat is integrally provided with a plurality of lithium core installation slots, a heat dissipation air duct is arranged between thelithium core mounting slots, the lithium core mounting slots are filled with the lithium core units, a fan is arranged at the bottom of the lithium core fixing seat through a bracket, and a cover plate is arranged at the top of the lithium core mounting slots. A first spring and a second spring can be used for buffering when the lithium core units vibrate, and automatically expand and contract toensure the electrical conductivity of the lithium core units, and the fan can force air convection in the heat dissipation air duct, so as to bring out heat generated by the lithium core units to achieve heat dissipation, and guarantee the uniform temperature field of the lithium core units, and the heat dissipation efficiency can be improved by a heat dissipation groove.

The invention relates to the field of carbon fiber pre-oxidation, in particular to a method and pre-oxidation furnace for regulating and controlling homogenization of carbon fiber pre-oxidized filaments. The method for regulating and controlling the homogenization of the carbon fiber pre-oxidized filaments according to an embodiment of the invention includes drawing precursors to perform pre-oxidation; in the pre-oxidation process, the precursors are heated in an integrated heating mode of infrared heating and hot air heating, and heat is dissipated in a forced air convection mode. The pre-oxidation furnace for regulating and controlling the homogenization of the carbon fiber pre-oxidized filaments comprises a hearth for containing precursors, a drawing system for drawing the precursors, an infrared heating device for carrying out infrared heating on the precursors, an electric heating wire heating device for carrying out thermal heating on the precursors, and a ventilation system forforming convective air in the hearth. According to the method and pre-oxidation furnace for regulating and controlling the homogenization of the carbon fiber pre-oxidized filaments, the inside of fibers is heated by infrared, the outer layer of the fibers is heated by hot air, the outer layer of the fibers is subjected to convection temperature control so that the permeation of oxygen to the inside of the fibers is guaranteed, and the purpose of regulating and controlling the homogenization of the pre-oxidized filaments is finally achieved.

The invention relates to power generation devices, in particular to a power generation device attached to an exterior wall of a building. The power generation device mainly comprises a wind gathering cover, a support, a wall-attached air tube, an air tube heat-absorbing surface, an impeller and a power generator. The power generation device is mainly powered by that firstly, sunlight radiation enables air in the wall-attached air tube to be heated, and air density becomes smaller to generate lift force; secondly, potential energy of rainfall drives the impeller to rotate to generate power; thirdly, wind at the top of a roof of the building is compressed when passing through the flared wind gathering cover, so that flow velocity is increased, negative pressure is generated and flow velocity of the wind in the wall-attached air tube is increased. The power generation device attached to the exterior wall of the building converts energy from natural air convection, air convection forced by sunshine heating and rainfall downflow potential energy so as to generate powder whether in windy days, rainy days or sunny days. The power generation device attached to the exterior wall of the building has the advantages of good power generation effect, cleanness and no pollution.

A parallel flow heat exchanger specialized for air conditioner comprises a row of heat exchanging flat tubes parallel arranged. Two ports of the heat exchanging flat tubes parallel arranged are perpendicularly connected with a pair of collecting tubes, and the parallel flow heat exchanger is characterized in that the collecting tubes are of an arc shape, a connecting line of center points of cross sections of the arc shaped collecting tubes is a segment of an arc, the string length of the arc ranges from 0 to 6 times in arc height, and when projections of the connecting lines of the center points of cross sections of a pair of the arc shaped collecting tubes are straight lines, the parallel flow heat exchanger is of a parallel line structure. The invention can devote to design the parallel flow heat exchanger, completely meeting the heat exchanging capacity without changing the size of the exiting space, to be applied to heat exchanger occasions, on which the existing parallel flow heat exchanger can not be substituted in use. The parallel flow heat exchanger also can carry out target-oriented fit design for the structure of air outlets of forced an air convection fan when in heat exchanging, thereby largely increasing the heat exchanging efficiency. The parallel flow heat exchanger further has high heat exchanging capacity without cup weld of radiating aluminum sheets, thereby eliminating all the defects brought by the radiating aluminum sheets.

The invention relates to a novel hybrid-driven energy-saving air conditioning terminal which comprises more than one group of plate-shaped heat transport devices and more than one parallel channel type fin heat-exchange structure combined with the plate-shaped heat transport devices, wherein the plate-shaped heat transport devices adopt plate-shaped structures that are formed by extruding a metal material, more than two micro-tubes are arranged side by side in each plate-shaped structure, and heat exchange and transport are performed through a flowing medium in the micro-tubes; the parallel channel type fin heat-exchange structures are combined with plate surfaces of the plate-shaped heat transport devices; each parallel channel type fin heat-exchange structure is provided with a plurality of air convection channels which are arranged side by side in the length direction of the corresponding plate-shaped heat transport device in sequence; and each parallel channel type fin heat-exchange structure comprises a parallel channel type sparse fin heat-exchange structure and a parallel channel type dense fin heat-exchange structure. According to the novel hybrid-driven energy-saving air conditioning terminal, heat exchange is enhanced by the plate-shaped heat transport devices with the specific structures, and natural air convection heat exchange and forced air convection heat exchange can be performed as needed through the parallel channel type fin heat-exchange structures combined with the plate surfaces of the plate-shaped heat transport devices, so that the heat exchange efficiency is improved, effective heating, refrigeration and dehumidification functions are realized, the novel hybrid-driven energy-saving air conditioning terminal has the advantages of low cost and zero maintenance, and fine management and energy saving can be realized.

The invention discloses a primary and secondary fusion intelligent complete ring main unit which comprises a cabinet body. The cabinet body is provided with a cabinet door, a condensation detection assembly is fixed in the cabinet body, the condensation detection assembly is used for detecting whether condensation occurs or not, and the condensation detection assembly comprises a drainage cone, along groove, a drainage tube, a liquid collection bottle, a capillary tube and an electrode. The drainage cone is an inverted-cone-shaped table board, is made of metal and serves as a condensation generating face, a plurality of long grooves are carved in the inner face and the outer face, the bottom ends of the long grooves extend to the bottom edge of the drainage cone, and the bottom ends of the long grooves are open and communicated with the drainage tube. The bottom end of the drainage tube extends into the liquid collecting bottle. The side surface of the liquid collecting bottle is communicated with a capillary tube which is obliquely arranged upwards. Two opposite metal electrodes are fixed to the wall of the capillary tube, and when water makes contact with the two electrodes at the same time, the two electrodes are communicated. The ring main unit also comprises an air inducing assembly. The air inducing assembly is used for forcing air convection inside and outside the cabinet body, and after the electrodes are connected, the air inducing assemblies start to work. By means of the ring main unit, condensation can be effectively eliminated or avoided.

The invention belongs to the field of radiator device equipment, and particularly discloses a forced convection device for a tube-and-fin radiator. The device consists of fins, heat pipes and guide rudders; a plurality of forming holes are punched in parallel fins according to the position structures of the heat pipes, so that the heat pipes are arranged in the forming holes in a sleeving manner for fixing; the guide rudders are symmetrically and fixedly mounted on the two side walls of each heat pipe; the guide rudders are low-resistance aircraft airfoil profiles and are mounted at certain angles; the sum of the mounting angles of the two symmetrical guide rudders on the two sides of each heat pipe is 360 degrees; air among the fins can form two air helixes which are parallel to each other and are in the same rotating direction in the vertical direction; forced convection is formed at the tangent part of the two air helixes. According to the forced convection device disclosed by the invention, a heat exchange effect of wall surfaces of the heat pipes as well as the fins and the air is strengthened on the basis of ensuring normal flow of the air; meanwhile, the rotating of the air in flow channels is realized through the mounting directions, so that the air in adjacent two flow channels rotates in the same direction, forced air convection is realized, and the radiator can adapt to the change of a variety of conditions.

A thermally-managed electronic device, such as a heat-generating lamp or microelectronic assembly, takes advantage of the latent heat of phase-change within a heat pipe and functions in cooperation with a plurality of heat-radiating elements to enhance heat removal capacity from a heat source. The device, which may be provided in a natural convection or forced air convection embodiment, improves the heat removal on the cold side of the heat pipe by providing a much larger heat-radiating surface area in the form of a plurality of heat-radiating elements that are each thermally connected by means of one or more thermal connecting elements.