6307 results about "Computer fan" patented technology

A cooling system for cooling components of a computer is provided. The cooling system includes a DC fan which operates at a speed which is substantially proportional to the voltage that is applied to the fan. A zener diode voltage divider is connected in series between a voltage source and a first input of the fan. The second input of the fan is connected to a reference voltage source. A switch is also connected in series between the voltage source and the first voltage input of the fan so as to be connected in parallel with the zener diode voltage divider. When the switch is in a first position, the voltage produced by the voltage source is applied directly to the fan allowing the fan to operate at a first speed. When the switch is in a second position, the voltage from the voltage source is applied to the first input of the fan through the zener diode such that the first input of the fan receives a second voltage that is less than the first voltage thereby causing the fan to operate at a second speed. The zener diode voltage divider is substantially current independent such that the voltage drop across the zener diode is substantially independent of the current that is drawn by the fan.

The invention relates to the technical field of electric pressure cookers, in particular to an electromagnetic heating electric pressure cooker. The electromagnetic heating electric pressure cooker structurally comprises a shell, an inner pot and an outer pot, wherein a pressure switch and a control device are arranged at the bottom of the outer pot; an annular heating disk component and a sensor component are arranged between the inner pot and the outer pot; a through hole is formed in the middle of the heating disk component; the sensor component is mounted in the through hole; the heating disk component comprises an electromagnetic heating outer disk, a radiating fan, an electromagnetic heating wire coil, an electromagnetic coil, a plurality of magnetic strips, an electromagnetic heating disk cover and an anti-magnetic disk; the sensor component comprises a fixed frame, a spring arranged on the fixed frame in a sleeving manner, a sensor cap and a thermistor; and the thermistor is electrically connected with the control device. Compared with the prior art, the electric pressure cooker has the advantages of simple structure, high radiating performance, capacity of precisely controlling pressure and temperature and long service life, truly realizes application of an electromagnetic heating technology to the electric pressure cooker, and has a wide market prospect.

A heat dissipation fan has a casing, a stator fixedly received in the casing, a sleeve with a central hole securely attached to the stator, a lubricating bearing with lubrication oil contained therein mounted in the sleeve, a fan rotatably mounted in the casing and having a magnet mounted therein to be a rotor, a shaft extending from the fan and securely received in the lubricating bearing and a locking disk securely mounted on the shaft to lock the lubricating bearing on said shaft. The lubricating bearing has a central hole defined therein, a chamber defined in the bottom end of said bearing and at least one oil groove longitudinally defined in the outer periphery of said bearing. This can lubricate the shaft and guide the lubrication oil to avoid noise and oil from leaking from the sleeve and drying out the bearing. Consequently, the useful life of the heat dissipation fan will be increased.

Space is decreased in the direction of thickness on a side of a substrates mounted on a back of a flat panel display to adapt requirement for increasing and thinning its size, and most flat panel displays forcibly radiate heat with a fan provided thereon. The present invention provides a flat panel display having fewer heat radiating fans to secure a channel for causing a heat radiating air to flow. Portions where electronic circuit device on a back of a display panel are mounted are divided into three: left; center; and right portions; with a main frame as a border, the electronic circuit device are constructed of four module substrates, the substrate which is the greatest in heating value in the four module substrates (hereinafter referred to as a substrate) is arranged in the center portion and the substrates which are the smallest and the second smallest in heating value therein are arranged in the same portion.

A cooling fan including a fan module, a microcontroller, and a bus interface. The microcontroller is coupled to the fan module and is capable of adjusting a speed of the cooling fan based on a status of a second cooling fan and adjusting the speed of the cooling fan based on a temperature detected. The bus interface is in communication with the microcontroller, the second cooling fan, and the system to receive and output data.

A structure of computer CPU heat dissipation module comprising a heat dissipation fin, a heat dissipation fan, a pair of fastening element, the CPU being mounted at a CPU seat and the top of the CPU mounted with the heat dissipation fin, and the top face of the heat fin being mounted with the heat dissipation fan which is then fastened by the fastening element, characterized in that the heat dissipation fin is a cubic structure having a height approximate the same as the length and width and the heat dissipation side fin is protruded toward the surrounding and the bottom end thereof is tapered, and the heat dissipation fan has a fan body enclosed a unidirectional mask housing which can exactly cover the wall of the top surrounding of the heat dissipation fin such that the fan body is stacked on the top of the heat dissipation fin, and the fastening element has one end being a fastening body, and the other end is a fastening ring, the back end of the fastening body has a suspension clip so as to fasten the top end at the two lateral wall of the mask housing, thereby the fastening body can cause the fastening ring to fasten the fastening hook corresponding to the CPU seat.

The invention provides a simple and effective thermal management system of a water-cooling proton exchange membrane fuel cell and a control method of the thermal management system. The thermal management system mainly comprises an electric pile, a water tank provided with a heating device, a cooling water circulating pump, a radiator, a cooling water pile inlet temperature sensor, a cooling water pile outlet temperature sensor, a cooling water pile inlet pressure sensor and a controller of the thermal management system. The control method following pressure change is provided to overcome the defects of lag, great overshooting, system coupling and the like caused by temperature change tracking in the traditional control strategy. The radiator is mainly used for controlling the cooling water inlet temperature of the pile and mainly controls the rotating speed of a radiator fan according to the cooling water inlet temperature of the pile of the fuel cell; and the cooling water circulating pump is mainly used for controlling the cooling water flow in the whole thermal management system and mainly controls the rotating speed of the circulating pump according to the cooling water inlet pressure of the pile of the fuel cell.

The invention discloses an adaptive fan-cooled LED lamp tube and relates to the technical field of non-portable indoor lighting sets. The adaptive fan-cooled LED lamp tube comprises two LED light-emitting circuit boards, a radiating rack and a semi-tubular lampshade; the two LED light-emitting circuit boards have an included angle of 120-160 degrees and are symmetrically attached to the lower surface of the radiating rack; radiating rods are vertically distributed on the left and right sides of an inner cavity of the radiating rack; the cross section of the radiating rods is in a streamline shape in the length-wise direction of the radiating rack; seal cap plugs of the LED light-emitting circuit boards are fixed to both ends of the radiating rack; each seal cap plug is provided with an air inlet; the radiating rack and the semi-tubular lampshade are connected in an inserted manner and are fixed through the seal cap plugs at two ends; the top center of the radiating rack is radially provided with at least one air outlet; a cooling fan is mounted in each air outlet. The adaptive fan-cooled LED lamp tube has the advantages of insufficiency in ventilation and good cooling effect.

The present invention relates to an apparatus and method for controlling a fan of a refrigerator with a television / radio module, wherein an operation of the fan is controlled according to an operation of the television / radio module. The present invention is characterized in that when the television or radio is operated, electric power is controlled to be automatically supplied to the heat radiation fan such that heat generated due to the television or radio operation can be radiated. Further, the heat radiation fan is also controlled to be automatically turned off when the television and radio operation is terminated. Therefore, the unnecessary operation of the heat radiation fan is prevented, and consequently, reduction in electric power consumption and efficient control can be made.

A heat dissipation system within a housing of a computer is disclosed. The heat dissipation system includes a heat dissipating fan, a temperature sensor, a rotation speed setting portion, and a performance control portion. The rotation speed setting portion is configured to change a rotation speed of the heat dissipating fan in a stepwise manner based on a threshold temperature and a measurement temperature measured by the temperature sensor. The performance control portion is configured to temporarily reduce the processing capability of a processor within the computer in response to a determination that the measurement temperature has exceeded the threshold temperature during a predetermined period of time.

A heat sink includes a base having a first side in contact with a heat-generating electronic element and a second side opposed to the first side. Fins are formed on the second side of the base. A non-rectilinear air channel is formed between two adjacent fins, with a length of the non-rectilinear air channel being greater than a length of the base along an extending direction of the fins on the base. The heat sink may be provided to an outlet side of a heat-dissipating fan to form a cooler.

A heat dissipation device for dissipating heat from a plug-in electronic component, such as a memory is provided. The heat dissipation device includes a base frame, a moving frame, and a retaining cover. The base frame is disposed at one side of the electronic component. The moving frame is movably mounted on the base frame. A heat dissipation fan is mounted on the retaining cover, and the retaining cover is also movably mounted on the moving frame. In this manner, the heat dissipation fan has at least a retraction position where the heat dissipation fan is not overlaid above the electronic components so as to plug or remove the electronic component, and a heat dissipation position where the heat dissipation fan dissipates heat from the corresponding electronic component. Furthermore, the heat dissipation position changes in accordance with actual heat dissipation requirements, thereby providing an optimal heat dissipation mode.

A heat sink fan of the present invention includes a heat sink and an axial flow fan, and the axial flow fan includes a motor, an impeller and a housing. An outer wall surface of a cylindrical portion of the housing is formed with an arm which engages with the heat sink and fixes the housing and the heat sink. The arm is provided with a lead wire retaining hook. A interspace is formed between the lead wire retaining hook and the arm, and the lead wire is detachably held in the interspace. The packing or transportation operation is enhanced, and convenience of mounting operation of the lead wire to electronic equipment is enhanced.

A fully enclosed type motor with outer fans includes a ventilation fan. The fan has radially extending blades on a bracket side, and radially extending blades on a core side. Outside air is let into an air passage as cooling air from an opening formed in the bracket on an inner side of the blades. The cooling air is fed into a cooling hole formed in an outer peripheral part of a stator core and then discharged to the outside. Air within the motor body, which is fed from the blades, is passed through an external heat exchanger and returned to the inside of the motor body.

The invention discloses a method for controlling the rotating speed of an outer fan of a multi-split air conditioner. The initial rotating speed after the fan is started is determined according to the outdoor environment temperature; in the refrigerating process, the higher the outdoor environment temperature is, the higher the initial rotating speed of the outer fan is; in the heating process, the higher the outdoor environment temperature is, the lower the initial rotating speed of the outer fan is; in the refrigerating process of the air conditioner, the rotating speed of the outer fan is regulated by detecting the high pressure; a high pressure target value is set according to the outdoor environment temperature; the higher the outdoor environment temperature is, the higher the high pressure target value is; and in the heating process of the air conditioner, the rotating speed of the outer fan is regulated by detection the low pressure. According to the invention, the target pressure range is set according to the outdoor environment temperature, so that the control is more reasonable and the reliability and the energy efficiency ratio of a system are improved.

The temperature control system includes heat elimination air flue including air inlet and air outlet, and reflow dual flue including first air inlet and first air outlet. The first air inlet and first air outlet of reflow dual flue are connected to the air outlet and air inlet of the heat elimination air flue. Heat elimination fan system is setup in the heat elimination air flue. Circulating fan system is setup in the reflow dual flue. Under environment in normal temperature, the invention does not need of using additional heating unit. Using heat consumption of equipment self, the invention carries out heating to reduce relative humidity in cabinet, inhibit corrosion, save energy, and guarantee reliable heat elimination for equipment.

The invention discloses an electronic device comprising a housing and an air volume adjusting device; wherein, the housing is defined with a holding space and an air inlet causing the holding space to be communicated with the outside; the air volume adjusting device comprises a plate piece for covering the air inlet and an actuating mechanism, wherein, the actuating mechanism can drive the plate piece to move to open the air inlet along with temperature change of the holding space; the supply air rate of the holding space can be increased by the configuration of the air volume adjusting device so as to effectively improve the heat dissipation efficiency of a heat dissipation fan and lower the possibility of system halt due to poor heat dissipation in the system; in addition, the air volume adjusting device with simple structure can effectively increase heat dissipation efficiency and does not need to adopt complex heat dissipation assemblies with high price and complex structure, so that manufacturing cost can be effectively lowered.

The present invention discloses a wind direction-adjustable heat-dissipation fan module, which is arranged inside a computer and provides heat-dissipation air current for electronic devices inside the computer. The wind direction-adjustable heat-dissipation fan module of the present invention comprises a support unit arranged inside the computer. An electric fan is pivotally coupled to the support unit, and the electric fan can have a rotation trip with respect to the support unit. According to the layout of the electronic devices inside the computer, the electric fan can be rotated pivotally with respect to the support unit to adjust the angle of the wind outlet. The present invention can solve the incapability of the conventional heat-dissipation fan to adjust the angle thereof, which causes inferior heat-dissipation inside a computer.

The invention discloses a LED illuminating device capable of heat recovery, comprising an LED flat panel light source, a heat-dissipation device and a thermoelectricity conversion device; the heat-dissipation device comprises a closed box-shaped inner base plate, a heat pipe radiator and a cooling fan which is positioned above the heat pipe radiator; the backside of the LED flat panel light source is closely attached on lower surface of the inner base plate and the heat pipe radiator is closely attached on upper surface of the inner base plate; the thermoelectricity conversion device comprises a plurality of outer base plates which are arranged around the outside of the inner base plate and heat dissipation fins are arranged on outer lateral surfaces of each outer base plate; sheet-type thermoelectricity converters are arranged between inner lateral side of each outer base plate and outer lateral side of each inner base plate, the side where the thermoelectricity converter is closely attached on the outside is heat end and the side where the thermoelectricity converter is closely attached on the inner side is cold end; the heat end and cold end of each thermoelectricity converter are series-connected, parallel-connected or series-parallel connected and then are connected via output wires with an energy-storage conversion unit arranged at one side of a radiator; the energy storage conversion unit can distribute electric energy to LED flat panel light source for auxiliary lightening and can drive the operation of cooling fan.

A heat dispensing fan includes a hub having a recess defined in a top thereof so as to receive a fan member therein. The recess communicates with a side outlet in the hub and apertures defined through the hub. The fan member has a ring-shaped base plate and a protrusion extends from a center of a top of the base plate. A plurality of first curve blades extends from the protrusion and a plurality of second curve blades are located on the top of the base plate. Each first curve blade is connected to one of the second curve blades. A top cap is connected to the hub and has a hole defined therethrough.

The invention discloses an energy-saving system in a communication room, which improves the refrigeration efficiency of the air conditioner, has good energy-saving effect, saves the running cost and prolongs the service life of the air conditioner. The energy-saving system comprises a precise air conditioner (30), a control device (70), a relay (71), a water box (3) and a supercharging pump (4); the precise air conditioner (30) comprises an outdoor condenser (1), an indoor evaporator (2) and a heat dissipation fan (10); the water box (3) is connected with a water inlet pipe (5) which is provided with a water inlet valve (51); the water inlet of the supercharging pump (4) is communicated with the water box (3); the water outlet of the supercharging pump (4) is divided into two passages: one passage is connected with a plurality of atomizing spray heads (7) and the pipeline is provided with a spraying electromagnetic valve (61); the other passage is connected with a plurality of cleaning spray-head (8) and the pipeline is provided with the cleaning electromagnetic valve (62); and the positions of the spraying electromagnetic valve (61) and the cleaning electromagnetic valve (62) correspond to the fin of the outdoor condenser (1). The energy-saving system can be widely applied to the energy-saving field of the communication system.

A thermal module (10) for dissipating heat from a heat-generating electronic component (20) includes a base plate (11), a heat-dissipating fan (16) mounted to one side of the base plate, at least a heat pipe (12) mounted to another side opposite to the one side of the base plate, and a fin assembly (14) mounted to an air outlet of the heat-dissipating fan. The heat pipe includes a bending portion (124). The fin assembly includes a portion (142) corresponding to the bending portion of the heat pipe. The fins of the portion of the fin assembly are arranged along an extension direction of the bending portion of the heat pipe.

A cooling fan with high heat-dissipating performance includes a plurality of blades; and a frame for receiving the blades therein, wherein the frame has a reduced height for exposing the blades to outside of the frame so as to allow air to enter into the frame via a top portion and a peripheral portion of the blades to improve air introduction and heat dissipating efficiency of the cooling fan. A cover may be mounted to a top surface of the frame, and formed with a plurality of openings for allowing air to enter into the frame through the openings; such an arrangement cam effectively enhance air intake and working efficiency of the cooling fan.

The invention discloses an off-board charger and an active adaption and self-diagnosis method of a cooling system thereof. The off-board charger comprises a cabinet body and a charging module, a master control module, a temperature sensor and a plurality of cooling fans which are arranged in the cabinet body, wherein the charging module, the cooling fans and the temperature sensor are electricallyconnected with the master control module, the master control module is used for acquiring an output power of the charging module, an ambient temperature acquired by a first sensor and internal equipment temperature data acquired by a second sensor, comparing and analyzing the acquired data and standard reference data stored in advance and generating and sending a corresponding execution instruction to a corresponding execution unit when the acquired internal equipment temperature exceeds a reasonable range of a corresponding internal equipment temperature expected value in the standard reference data, and the execution unit is used for responding the execution instruction. By the off-board charger, the execution instruction can be rapidly made to ensure safety running of the equipment bythe master control module according to a running state of the equipment, and early warning can be performed when a fault occurs in the cooling system.

An embodiment of the invention provides an integral equipment cabinet ventilation wall controlling system and an integral equipment cabinet ventilation wall controlling method. The integral equipment cabinet ventilation wall controlling system comprises a temperature monitoring module, a rotating speed calculating module and at least one fan control panel. The temperature monitoring module is used for monitoring the temperature of components and parts of every server in a monitoring cabinet. The rotating speed calculating module is used for calculating a rotating speed required by a radiating fan corresponding to every server. The fan control panels are used for controlling rotating speed of the radiating fans corresponding to every server on a control cabinet. The integral equipment cabinet ventilation wall controlling system and the integral equipment cabinet ventilation wall controlling method have the advantages that rotating speeds of the corresponding fans can be controlled according to radiating requirements of different servers in an equipment cabinet, suitable rotating speed of the corresponding radiating fans can be controlled according to actual working temperatures of the servers even if different types of servers are mounted in the equipment cabinet, spare energy consumption is avoided, and cost is saved.

A heat dissipating fan includes a housing having a base and a sidewall coupled to the base. The sidewall defines a compartment. The housing further includes an air inlet, an air outlet, and a dust channel. The air inlet, the air outlet, and the dust channel are in communication with the compartment. A stator is coupled to the base of the housing. An impeller is rotatably coupled to the stator. A control element includes a driving circuit electrically connected to the stator and a rotating direction control circuit electrically connected to the driving circuit. In another embodiment, the heat dissipating fan includes a housing having a base and a lateral wall coupled to the base. The lateral wall defines a compartment. The lateral wall includes an air inlet and an air outlet both in communication with the compartment. The air inlet also acts as a dust channel.