7230results about "Indirect heat exchangers" patented technology

Ultrasound devices and systems are disclosed in which cooling of an active acoustic element of an ultrasound transducer is achieved via an electrically conductive member that extends beyond a proximal side of the active acoustic element to contact a heat exchanger. The electrically conductive member delivers electrical driving signals to the active acoustic element while conducting heat to the heat exchanger. A region of the proximal surface of the active acoustic element that is free from contact with the electrically conductive member may also absent from contact with a liquid or a solid, thereby facilitating reflection of ultrasound energy. The heat exchanger may include an electrically insulating fluid that contacts the electrically conductive member to remove the heat conducted through the electrically conductive member. The active acoustic element may be a multilayer lateral mode element, and the electrically conductive member may form an electrode of the lateral mode element.

An electronic device comprises a heat source and a heat distribution structure coupled to the heat source to distribute heat generated by the heat source during operation of the electronic device.

The invention relates to the technical field of smashing, and discloses a cerium oxide airflow smashing device and a production technology.The cerium oxide airflow smashing device comprises a base, four supporting legs arranged at equal angles are arranged on the base, a first tank is connected to the supporting legs, and an air injection mechanism used for spraying high-pressure airflow and driving materials to collide with one another to be smashed is installed in the first tank; a feeding pipeline positioned above the air injection mechanism is mounted on the first tank body; the inner wall of the first tank body is provided with four cooling assemblies which are arranged at equal angles, the upper port of the first tank body is connected with a second tank body through a flange, the second tank body is provided with a grading mechanism and a discharging pipeline corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover; according to the device, efficient production is achieved through multi-dimensional innovation, a double-layer S-shaped cooling flow channel dissipates heat quickly, and high-temperature agglomeration of materials is avoided so as to guarantee stable physicochemical properties; and the four groups of opposed nozzles form a vortex field, so that the particle size refining rate of the material is more than 90%, and the energy consumption is reduced by 35%.

The invention belongs to the technical field of evaporation-boiling heat dissipation in a limited space, and relates to a heat dissipation device of a capillary core coupling manifold microchannel, and the heat dissipation device realizes vapor-liquid efficient separation and thermodynamic equilibrium regulation and control through the synergistic effect of thin film evaporation of a capillary core structure and boiling heat exchange of the manifold microchannel. The capillary core structure utilizes high porosity and strong capillary force to realize rapid liquid supplementing and uniform spreading of a working medium, so that local dryness is avoided; the radial manifold structure reduces the flow resistance and improves the temperature uniformity through the topological optimization of the flow channel; the directional exhaust design of the steam channel fundamentally inhibits steam bubble backflow. In a multi-heat-source scene, the device can dynamically adjust the branch flow through a thermal resistance-flow resistance coupling model, and the system stability is remarkably improved. The invention has the advantages of high heat flow bearing capacity, low energy consumption and strong environmental adaptability, and provides an innovative solution for reliable heat management of high-power electronic devices.

A combination heat dissipation structure includes a vapor chamber and at least one heat pipe. The vapor chamber defines an airtight chamber filled with a working fluid and provided with first and second wick structures. The vapor chamber further includes at least one through hole formed on its upper wall and communicable with the airtight chamber, and at least one annular element provided in the airtight chamber corresponding to the through hole to contact with the first and second wick structures. The heat pipe has an open end inserted into the airtight chamber to contact with the first wick structure, such that the heat pipe is axially supported and located by the annular element. With these arrangements, a flow-back path between the vapor chamber and the heat pipe is largely shortened to avoid dry burning in the vapor chamber and upgrade the two-phase heat exchange efficiency of the vapor chamber.

The invention belongs to the technical field of solid-liquid phase change heat dissipation, and discloses a memory alloy-based phase change expansion buffer structure, which comprises an elastic structure, a supporting structure, a thin wall, a cavity, a flaring, an electronic device, a heat sink, fins, a connecting structure and a phase change material, the thin wall is made of shape memory alloy and separates the internal cavity and the external phase-change material, the internal cavity is communicated with the external environment through the flaring, and in the flying process of the aerospace vehicle, external airflow flows into the flaring to take away heat stored by the phase-change material continuously. Based on the shape memory function of the memory alloy, additional space expansion buffering can be provided for the phase change material when the temperature changes, and stress damage caused by phase change expansion is avoided. The memory alloy thin wall and the elastic supporting structure are combined, the structure is simple, no moving part exists, circulating work in the high-temperature environment and the low-temperature environment can be achieved, local hot spots caused by internal gap movement of the phase change material in the circulating phase change process are reduced, and heat transfer deterioration is avoided.

An apparatus includes a structure configured to receive thermal energy and to reject the thermal energy into an external environment. The structure includes a lid and a body. The structure also includes (i) multiple inline and interconnected thermomechanical regions and (ii) one or more oscillating heat pipes embedded in at least some of the thermomechanical regions. Different portions of at least one of the lid and the body form the thermomechanical regions. The one or more oscillating heat pipes are configured to transfer the thermal energy between different ones of the thermomechanical regions. At least one of the thermomechanical regions includes one or more shape-memory materials configured to cause a shape of the structure to change. Each of the one or more oscillating heat pipes includes at least one channel in the structure.

The invention discloses a zeolite adsorption and desorption integrated treatment system, and particularly relates to the field of zeolite separation treatment, and the zeolite adsorption and desorption integrated treatment system comprises a process sensing module, a dynamic partition control module, a global optimization control module and a cooling regeneration module. According to the zeolite adsorption and desorption integrated treatment system, the problem of blind operation in the traditional technology is solved through the process sensing module, a data basis is provided for dynamic partition, the intelligent monitoring level is improved, and the performance of an adsorbent is fully exerted; the problem of non-uniform heat and mass transfer of a bed layer is effectively solved through the dynamic partition control module, the desorption heat utilization efficiency is improved, and meanwhile, the service life of an adsorbent is prolonged; a dynamic optimization function is constructed through the global optimization control module, energy consumption, solvent recovery income and stability are comprehensively considered, self-adaptive adjustment of operation parameters is achieved, the energy consumption is reduced while the processing efficiency is guaranteed, and the environmental benefits are remarkably improved.

A rack system for use, e.g., in data centers is disclosed. The rack system includes a rack frame and a rack-mounted assembly, including an electronic device disposed within the rack-mounted assembly, the electronic device including a heat-generating component. The heat-generating component is in thermal contact with a liquid cooling block through which a channelized cooling fluid is conveyed. The electronic device is immersed in a dielectric immersion cooling liquid. The rack-mounted assembly includes a non-sealed immersion case in which the electronic device is immersed in the dielectric immersion cooling liquid, the non-sealed immersion case configured to permit the rack-mounted assembly to be individually inserted into or removed from the rack frame. Also disclosed are container-based data center modules based on the disclosed rack system, and a data center using numerous such container-based modules.

The invention discloses a vacuum plate heat exchanger, belongs to the field of heat exchange, overcomes the defect that a vacuum heat exchanger is prone to leakage, and is mainly characterized in that a heat exchange plate is correspondingly connected with at least one heat exchange tube, and the heat exchange plate is formed by welding two thin plates arranged front and back; a plurality of first flowing cavities which are arranged at intervals in the smoke flowing direction are arranged between the two thin plates, phase change materials are arranged in the first flowing cavities, a smoke channel is formed between every two adjacent heat exchange plates in the lower heat exchange cavity, fluid to be subjected to heat exchange is arranged between the heat exchange pipes in the upper heat exchange cavity, second flowing cavities are formed in the heat exchange pipes, and phase change materials are arranged in the second flowing cavities. The second flow cavities are communicated with the first flow cavities in the corresponding heat exchange plates through transition structures; the first flowing cavities in the same heat exchange plate communicate with one another, and / or the second flowing cavities in the heat exchange pipes on the single heat exchange plate communicate with one another. The heat exchange device is mainly used for solving the problems of dust accumulation of the heat exchange element on the smoke side and damage to the heat exchange element on the low-temperature side.

A fairing assembly 10 installed about a heat exchanger, such as a radiator R, to reduce the drag on the vehicle, comprising: a frame installed about the heat exchanger, the frame having a curved contour; a panel mounted in the frame, the panel and fairing assembly defining an air passage for air flow to the heat exchanger; a cover installed in the frame and movable to control air flow through the passage to the heat exchanger; and, moving means for moving the cover over the frame to expose a portion of the opening and allow air to flow into the heat exchanger, the frame and cover thereby reducing the amount of drag on the vehicle while still allowing air flow into the heat exchanger; wherein the panel comprises a first overlapping part and a second overlapping part; and wherein the first overlapping part is moveable from an extended position to a retracted position when the fairing is impacted.

The invention relates to the technical field of heat energy recovery, in particular to an efficient multistage waste heat recovery and reutilization combined heat and power generation system which comprises a heat output calculation module, a temperature difference mode analysis module, a heat exchange efficiency analysis module, an optimal parameter identification module, a condenser management module and a condensate water recovery control module. According to the method, temperature, flow and pressure data of multiple positions are collected in real time, the heat fluctuation trend under multiple input conditions is accurately predicted, a basis is provided for follow-up optimization decision making, and through dynamic prediction of a temperature difference mode, the heat exchanger inlet and outlet temperature and the mutual relation between multiple equipment working parameters are combined, so that the heat exchange efficiency is improved. Real-time evaluation of the heat exchange efficiency is achieved, construction of a working model of a heat exchanger is combined, optimal working parameters under multiple temperature gradients are accurately recognized, optimization of working parameters of a condenser and condensate water recovery equipment is combined, the energy utilization rate of the combined heat and power generation system is increased, energy consumption is reduced, and resource waste is reduced.

A two-phase immersion cooling apparatus may include an immersion tank with a primary condenser in thermal communication with an interior volume of the immersion tank and a vapor management system fluidically connected to the immersion tank. The vapor management system may enable the apparatus to effectively manage periods of high vapor production by removing vapor and other gases from a headspace of the immersion tank, condensing the vapor to liquid, and returning the liquid to the immersion tank.

A liquid cooled heat exchanger includes first and second heat exchange chambers that are in thermal communication. The first heat exchange chamber is downstream of the second heat exchanges chamber and receives heat from a heat generating device, such as an electronic circuit. Heat in the first heat exchange chamber can be transferred to the second heat exchange chamber to increase the temperature of a subcooled liquid working fluid in the second heat exchange chamber. This can render a pressure drop across the heat exchanger that is relatively insensitive to a fraction of liquid that is vaporized in the first heat exchange chamber.

The invention belongs to the field of environment-friendly gas purification and energy conservation, and discloses a desulfurization and decarbonization method and system. The desulfurization and decarbonization system comprises a flue gas absorption system and an amine liquid regeneration system, the flue gas regeneration system comprises an absorption tower, a high-temperature rich and lean liquid heat exchanger, a low-temperature rich and lean liquid heat exchanger and a heat pump system; the amine liquid regeneration system comprises a regeneration tower, a thermal coupling reboiler, a high-pressure reflux tank, a reboiler, a low-pressure flash tank, a barren liquor low-temperature cooler and a steam flash tank. The desulfurization and decarbonization method comprises the following steps: in an absorption tower, performing countercurrent contact on amine liquid and raw material gas, and absorbing acid gas in the raw material gas to generate an amino salt compound, so as to obtain amine-rich liquid; the amine-rich liquid enters a regeneration low-pressure tower and a regeneration high-pressure tower, the amino salt compound is regenerated to release acid gas to generate amine liquid, and the amine liquid returns to the absorption tower. By utilizing a high-low pressure regenerative thermal coupling technology and a heat pump technology, the energy consumption of the system is effectively reduced, the overall absorption efficiency is improved, and the equipment investment and site arrangement are saved.

A heat exchanger assembly: a heat exchanger with a first tube including a first flat plate and a first shaped plate connected to each other to form a first tube channel extending along a first tube extension axis. The first shaped plate includes a stamped depression forming together with the surface of the first flat plate the first tube channel. The heat exchanger assembly further includes a chassis to which the heat exchanger is attached, with the chassis including a housing. The first tube is located externally with respect to the housing. The housing has a primary slot in which the first tube is at least partially enveloped, with the first tube facing the primary slot with the first shaped plate. The first tube is connected to the primary slot by an adhesive.

The invention provides an ultrathin VC vapor chamber which comprises a VC lower cover and a VC upper cover arranged on the VC lower cover, the VC upper cover is arranged in a zigzag mode, and a plurality of steam cavities arranged at intervals are arranged between the VC upper cover and the VC lower cover which are arranged in a zigzag mode, the ultrathin VC vapor chamber is characterized in that a metal foil capillary structure is arranged between the VC upper cover and the VC lower cover, and the lower portion of the metal foil capillary structure is attached to the VC lower cover. The upper portion of the metal foil capillary structure is attached to a part of the VC upper cover, the metal foil capillary structure comprises a metal foil and evaporation backflow holes which penetrate through the metal foil and are distributed in the metal foil in an array mode, the metal foil is provided with a hollowed-out supporting structure, and the hollowed-out supporting structure and the evaporation backflow holes are arranged in a staggered mode. Compared with a traditional copper net, the metal foil capillary structure facilitates development of ultrathin VC, the metal foil capillary structure has better capillary force, the VC can achieve higher heat dissipation power, and meanwhile the metal foil capillary structure is lower in cost compared with the traditional copper net.

The invention provides a copper-steel composite heat pipe and a preparation method thereof, and relates to the technical field of heat pipes, the copper-steel composite heat pipe comprises a steel-copper composite pipe, and the steel-copper composite pipe is composed of a copper inner pipe and a steel outer pipe. An internal copper structure is arranged in the steel-copper composite pipe; the internal copper structure is copper powder or a copper wire mesh. The copper powder is unilateral copper powder or bilateral copper powder or ring copper powder; the copper wire mesh is a copper mesh, or a copper mesh and a copper wire capillary, or a copper wire capillary. The steel outer pipe is made of steel 316L, and the copper inner pipe is made of copper C1020. The copper-steel combined material is used, the cost is saved, and it is guaranteed that materials are saved in the whole heat dissipation field. The double-layer combination of the copper inner pipe (C1020, high heat conduction) and the steel outer pipe (316L, corrosion resistance and high strength) is adopted, the efficient heat conduction of copper is utilized, and the environment erosion resistance and mechanical impact resistance of steel are utilized, so that the heat pipe is adaptive to complex working conditions (such as industrial high-temperature, humid or corrosion risk scenes), and the service life of the heat pipe is prolonged.

The invention relates to the technical field of optical communication, in particular to a vapor chamber and an optical module. Heat generated by a heat source is absorbed through the lower shell, then heat absorbed by the lower shell is absorbed by the heat dissipation working medium in the steam cavity, the heat dissipation working medium is changed into a gas state from a liquid state after absorbing heat, and the gas-state heat dissipation working medium is adsorbed on the inner surface of the upper shell, is cooled into a liquid state again and returns to the bottom of the steam cavity again. Therefore, heat dissipation of a heat source in the optical module is realized. The interface contact thermal resistances are only between the heat source and the lower shell and between the upper shell and the external environment, the number of the interface contact thermal resistances on a heat transfer path is greatly reduced, the uniform temperature plate is arranged as a part of the optical module, an integrated enhanced heat dissipation structure is formed, the interface contact thermal resistances caused by split design are prevented from being increased, and the heat dissipation efficiency is improved. The heat dissipation performance of the whole optical module is improved, and the heat dissipation requirement of the high-speed optical module is met.

The invention relates to a heat pipe energy pile, a heat pipe ground source heat pump system and an operation management method of the heat pipe ground source heat pump system, and solves the technical problems that an existing ground source heat pump needs extra power, is high in energy consumption and is difficult to adapt to winter and summer two-way energy supply, and the system comprises a pile foundation, a heat pipe, a heat exchanger and a heat pump unit. The heat pipe is combined with the pile foundation, is a vacuumized closed pipe body which is provided with a capillary core and filled with a phase change working medium, and is divided into an evaporation section at the lower part / side part of the pile foundation and a condensation section at the upper part of the pile foundation; the evaporation section exchanges heat with soil, the condensation section is connected with a heat exchanger, and the heat pump ground source side is connected with the heat exchanger; the capillary core drives a working medium to flow back autonomously through capillary force, and heat transfer or release is achieved. The system has the following effects that the contradiction between low consumption and annual energy supply in the prior art is solved, no extra power is achieved, two-way efficient energy supply in winter and summer is achieved, and energy consumption of a building cold and heat source system is greatly reduced.

A cooling system assembly may include a heatsink unit and a water block unit. The heatsink unit is configured to enable a first cooling liquid to undergo a phase-change. The heatsink unit includes a heat pipe heatsink comprising a first thermal transfer surface and a second thermal transfer surface. The second thermal transfer surface is opposite the first thermal transfer surface. The first thermal transfer surface is configured to enable a heat to be transported from at least one packaged integrated circuit to the heat pipe heatsink. The water block unit is configured to enable a second cooling liquid to flow through the water block unit. The water block unit is thermally coupled to the second thermal transfer surface. The second thermal transfer surface is configured to enable the heat to be further transported from the heat pipe heatsink to the water block unit.

A combination thermal module includes a vapor chamber defining an airtight chamber filled with a working fluid and having at least one through hole formed thereon communicable with the airtight chamber; at least one annular wick structure provided in the airtight chamber corresponding to the through hole; and at least one heat pipe has an open end inserted into the airtight chamber to contact with a first wick structure on an inner lower surface of the vapor chamber and be axially supported on the annular wick structure. The annular wick structure includes communicable axial and radial passages, allowing vaporized working fluid to flow from the vapor chamber to the heat pipe quickly. With these arrangements, the thermal module has a shortened flow-back path between the vapor chamber and the heat pipe to avoid dry burning in the vapor chamber and upgrade the two-phase heat exchange efficiency of the vapor chamber.

The invention relates to a directional wick vapor chamber and a preparation method and application thereof in the technical field of vapor chambers. The preparation method comprises the following steps: preparing a lower substrate and an upper substrate; a directional liquid absorption core structure is printed on one side of the lower base plate through the 3D printing technology, the directional liquid absorption core structure comprises a plurality of liquid absorption core units, and the liquid absorption core units are arranged in an equidistant or unequidistant array mode in the X-axis direction and the Y-axis direction; the side, provided with the directional wick structure, of the lower substrate and the periphery of the upper substrate share the same edge and are sealed and packaged, and a position for containing a liquid injection pipe is reserved and used for liquid injection and degassing; carrying out accurate liquid injection, primary degassing and secondary degassing on the sealed upper substrate and lower substrate; and sealing: cutting off the liquid injection pipe part, and finally packaging the liquid injection pipe part to form the complete directional wick vapor chamber with the directional transmission characteristic. According to the directional wick vapor chamber prepared through the preparation method, the heat flow distribution of the vapor chamber can be improved, and the heat transfer performance is improved.

The invention discloses an efficient pulsating heat pipe air pre-heater gas stove, and relates to the technical field of gas stoves. The air pre-heater comprises an air pre-heater body, a pulsating heat pipe and an air supply pipeline, the pulsating heat pipe is embedded in an inner cavity of the air pre-heater body, and the bottom of the air pre-heater body communicates with the top of the air supply pipeline; the air pre-heater body comprises a heat insulation radiation cavity and an air pre-heating cavity. The heat transfer efficiency of the pulsating heat pipe is far higher than that of traditional metal heat conduction, heat of high-temperature flue gas can be rapidly absorbed, waste heat loss is reduced, the heat efficiency is improved, secondary air is heated through the air preheater, the temperature of the secondary air is increased, the combustion temperature is increased, gas combustion is more sufficient, emission of carbon monoxide and nitric oxide is reduced, and the energy-saving and environment-friendly effects are achieved. The pulsating heat pipe has the unique advantages of being small and exquisite in structure, flexible in arrangement and efficient in heat transfer, and the heat efficiency of the gas stove is effectively improved through the L-shaped pulsating heat pipe heat insulation air pre-heater structure.

The invention discloses a heat exchange equipment intelligent fault diagnosis method and system based on digital twinning, relates to the technical field of digital twinning intelligent diagnosis, and is used for solving the problem that concurrent valve jamming and multi-equipment coupling faults are difficult to quickly and accurately position and safely dispose. Design configuration, maintenance history and real-time working condition data are written into a twin library through semantic mapping and unified time synchronization, and virtual-real synchronization is kept. Secondly, fusing the flow, the pressure difference, the temperature sequence and the color-infrared image, generating a health vector by means of a dimension reduction network, and performing real-time early warning; and after early warning occurs, a twin copy is cloned by using the combination of the abnormal equipment and the regulating valve, parallel simulation is performed on the jam disturbance of the injection valve, and a concurrent fault is locked through comprehensive similarity. Finally, a knowledge base is called to evaluate candidate disposal strategies, an optimal scheme is selected to be issued and executed, dynamic correction is monitored through residual errors, and a diagnosis-decision-execution closed loop is achieved. According to the method, the equipment reliability is improved, and the energy utilization rate is increased.

The invention discloses a new energy system for efficient ventilation, cooling and comprehensive utilization of a heat damage mine, and relates to the technical field of ventilation and cooling of the heat damage mine, the new energy system comprises a liquid air energy storage power station, a liquid air conveying pipeline system arranged in a liquid air conveying stratum drill hole, and an underground liquid air storage and conveying system arranged in an underground chamber of a mine area; the liquid air conveying pipeline system is used for connecting the liquid air energy storage power station and the underground liquid air storage conveying system; the underground liquid air storage and conveying system comprises an underground liquid air storage station and an underground liquid air conveying system; the underground liquid air storage station is used for storing liquid air; and the tail end of the underground liquid air conveying system is communicated with the underground mining area and is used for ventilating, cooling and comprehensively utilizing energy for the underground mining area. The efficiency of a traditional ventilation and cooling process is improved, the means of using liquid gas for industrial production underground is added, the energy consumption cost of mine production is greatly reduced, and the effects of energy storage and efficiency improvement can be provided for a ground power supply system.

A heat dissipation device includes a vapor chamber (1) and at least one heat pipe (2). The vapor chamber (1) includes a bottom plate (10) and a top plate (11) combined with each other to form a cavity (100); the cavity (100) contains a top plate capillary layer (11a) covering the top plate (11) which has at least one through hole (110). The heat pipe (2) includes a pipe body (20) with a closed end (200) and an open end (201) fixed in the through hole (110), and a pipe capillary layer (21) with a connecting portion (210). The top plate (11) includes at least one protrusion (111) corresponding to the through hole (110) and having a receiving portion (111a) recessed inside the top plate (11), and a capillary structure (11b) in the receiving portion (111a) and contacting with the connecting portion (210) and top plate capillary layer (11a).

The invention relates to the technical field of smoke exhaust waste heat recovery devices, and discloses a waste heat utilization and recovery device and method applied to boiler combustion smoke, and the waste heat utilization and recovery device applied to the boiler combustion smoke comprises a bottom frame, and a heat absorption mechanism, a middle section partition plate and a heat release assembly which are fixedly mounted at the top of the bottom frame in sequence; through the arrangement of the heat buffering assembly, when the temperature of smoke is high, the heat absorbing fins can absorb part of heat and conduct the heat to the medium storage cavity, a medium in the medium storage cavity absorbs the heat to be evaporated into gas, and the gas is filled with an inflatable heat conduction film through a gas flowing cavity; the inflatable heat conduction film is expanded to store the gaseous medium, the gaseous medium is dissipated when the smoke temperature is low, the gaseous medium is condensed into liquid after heat dissipation, then the liquid is absorbed by the liquid absorption core plate and returns to the medium storage cavity, and therefore heat transfer and buffering are facilitated, and damage of thermal shock to device parts is reduced.

A heat dissipation device is adapted for dissipating heat from a heat source, and includes a vaper chamber, a heat pipe set and a heat dissipation fin set. The vapor chamber is adapted for thermal coupling to the heat source. The heat pipe set is adapted for thermal coupling to the heat source, the heat from the heat source is synchronously conducted to the vapor chamber and the heat pipe set. The vapor chamber is thermally coupled to the heat dissipation fin set, and the heat pipe set penetrates through the heat dissipation fin set.

The present disclosure relates to an active heat dissipation apparatus including a thermal conduction panel body having a refrigerant flow space in which a refrigerant is stored and flows, in which the refrigerant flow space includes a first refrigerant flow path having a vaporization zone in which the refrigerant changes from a liquid phase to a gaseous phase, and a plurality of second refrigerant flow paths provided in a condensation zone provided in a portion other than the first refrigerant flow path and configured to guide a flow of a liquid refrigerant to the vaporization zone, and in which the second refrigerant flow paths form independent flow paths for the liquid refrigerant by a plurality of inclined guides, which protrude in the refrigerant flow space, have surfaces that adjoin one another and are in surface contact with one another, and are provided straight and inclined toward the first refrigerant flow path so as to be physically separated from the adjacent second refrigerant flow path, and by a plurality of strength reinforcement portions respectively formed on the plurality of inclined guides, thereby significantly improving heat dissipation performance.