928 results about "Electric cooling fan" patented technology

A transport refrigeration system, comprising: a compressor (22); a first electric motor (26) that provides a motive force to the compressor; at least one fan (52, 56, 82, 84, 86); a second electric fan motor (54, 56, 88, 90, 92) that provides a motive force to the fan; a solar PV electrical power source (220); an electric energy power source (230); a engine driven generator electrical power source (210); and a power management controller (40) coupled to route power selectively and concurrently from two of the electrical power sources (210, 220, 230) to provide electrical power to the first motor (26) and the second motor (54, 56, 88, 90, 92).

A battery-operated mower is described that includes a chassis supporting a first drive wheel and a second drive wheel, a battery pack, a first electric drive wheel motor interconnected to the first drive wheel and second electric drive wheel motor interconnected to the second drive wheel; one or more electric blade motors; an electric cooling fan in fluid communication with at least one of the first electric drive wheel motor and second electric drive wheel motor; one or more controllers for controlling the rotational speed of the first electric drive wheel motor, the second electric drive wheel motor, and the blade motors; and a left control actuator in communication with a first throttle sensor and a right control actuator in communication with a second throttle sensor, wherein the first throttle sensor and second throttle sensor are in communication with the one or more controllers.

The invention discloses an electrical system for a pure electric vehicle. A positive end bus high-voltage direct current contactor, a negative end bus high-voltage direct current contactor and a high-voltage safety switch are arranged between a battery management system of the electrical system and a driving motor controller; and a key switch is used for controlling low-voltage power supply relays of all electrical parts. When the electric vehicle is stopped to be charged, a vehicle-mounted charger independently supplies power to a low-voltage power supply end of the battery management systemand a high-voltage direct current bus; when the key switch is adjusted to an ON position, all of a vehicle controller, the battery management system and the vehicle-mounted charger have no serious faults, and the negative end bus high-voltage direct current contactor, a precharging high-voltage relay and the positive end bus high-voltage direct current contactor are sequentially closed; and when the key switch is adjusted to a Start position, the electrical system can accept an instruction of a driver to drive the vehicle to run. When the key switch is switched on, an electric power-assisted steering device, an electric air conditioner, a braking power-assisted vacuum pump, an electric pump and an electric cooling fan are all controlled to work, and a low-voltage storage battery is charged through buck DC / DC.

A non-stick coating, which inhibits frozen moisture accumulation, is applied to exterior exposed portions of heating and cooling systems where ice or other frozen moisture can accumulate and impair system design operational efficiencies; where heat exchange tubing and fins are downwardly sloped or angled; with an optional protective shell encasement which can be shaped to provide a vena contracta effect; with an optional electric fan to enhance airflow for heat exchange; with an optional electric vibrator to enhance inhibition of frozen moisture accumulation; with a downwardly sloped base to direct falling frozen moisture away from the heat exchange equipment; for use in conjunction with an air source heat pump system, an evaporative cooling system or a chiller, or as a supplement to a water-source heat pump system or to a direct expansion heat pump system; and for use with any other refrigerant-based heating system or cooling system.

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 soundproof casing is divided to an engine room (1), a muffler room (2) and a radiator room (3). The engine room (1) includes the engine E and a work machine unit (generator unit G). The muffler room (2) includes mufflers M1, M2. The radiator room includes a radiator R. An electric fan D is provided between an air intake aperture (22a) and the radiator. The radiator room and the muffler room are communicated. An air flow duct (4) to communicate the engine room and the muffler room is provided. An engine fan F is provided just opposite to an entrance of the air flow duct. An inter-cooler I is provided in the air flow duct. The soundproof type engine driven work machine including aforementioned apparatuses is offered to improve the cooling efficiency as well as reducing unfavorable noise.

The invention discloses an electric fan and a control method thereof. The electric fan comprises a fan body, a head shaking mechanism, a temperature sensing module, an image recognition module and a control module. The temperature sensing module is used for detecting the indoor environment temperature. The image recognition module is used for collecting image information of each person in a room and determining position information and identity information of each person according to the image information. The control module is used for obtaining the fan speed corresponding to each person according to the indoor environment temperature and the identity information, controlling the head shaking mechanism to operate according to the position information, and outputting the fan speed corresponding to each person when the head shaking mechanism operates to the position where the person is located. The comfort requirement of each person in the room can be met, and the electric fan is convenient, savable in energy and more intelligent.

The invention provides a method of ventilating equipment of a turbojet, the turbojet (10) having a cold zone (ZF) including a fan (14) upstream from a hot zone (ZC), the turbojet equipment (32) for ventilating being arranged in a ventilation space (30) available around the hot zone between a primary air stream passage (26) and a secondary air stream passage (28) of the turbojet, the method comprising taking ventilation air from one of the air stream passages in order to convey it to the ventilation space, and providing forced flow of the ventilation air by means of at least one electric fan (36) positioned inside the ventilation space and powered electrically by at least one thermoelectric generator (38) suitable for inducing a potential difference (ΔV) and positioned in a wall (40) between the ventilation space and the secondary air stream passage.

The invention discloses a mode control device and an electric fan. The mode control device disclosed by the invention comprises a controller, and a mode memory and a main motor, which are respectively connected with the controller, wherein N gear parameters can be stored in the mode memory at most; the controller reads one gear parameter from the mode memory, and controls the main motor to work according to read gear parameter; after the main motor works for preset time under the current gear parameter, the controller reads the next gear parameter from the mode memory, and controls the main motor to work according to the read gear parameter until the controller reads M gear parameters from the mode memory; the controller orderly controls the main motor to work in circulation according to the read M gear parameters, wherein M and N are natural numbers, and M is smaller than or equal to N. By the technical scheme provided by the invention, the problem that the existing electric fan cannot set the mode according to the preference of a user, so as to affect the user experience is solved.

A portable, convenient scent dispenser and method of operation allows the user to quickly change scents used therein as desired while hunting. A scent receptacle mounted in the lower end of a cylindrical housing is removable for replacing or exchanging scented materials. The scent dispenser provides a cylindrically-shaped housing having a removable cap containing microcontrolled electrical circuitry which includes mode indicators and a select switch. The lower body of the housing contains a battery assembly and an electric fan. The scent dispenser can be manually, selectively operated in a variety of modes to allow the fan to run continuously, cyclically, or cyclically only during daylight hours for economical power consumption.

A solar powered roof ridge vent apparatus is provided for actively conducting warm air from an attic space of a home or building to the ambient environment. The roof ridge vent apparatus includes a series of electrically powered axial fans fastened to openings formed in a laterally flexible main panel which is installed at the ridge opening of a roof on a home or building. The laterally flexible main panel seals to the roofline. The series of fans are protected from the elements by a shroud. The shroud is fastened to the laterally flexible main panel and forms a cavity surrounding the fans in which the fan drawn air is first introduced prior to passing through a vent to the ambient environment. The fans are powered using electricity generated by a solar panel, which is mounted to the main panel. A thermostat is employed to deactivate the electrical fans at lower ambient temperatures when attic ventilation is undesirable. The apparatus can be installed as a single unit to the exterior of the home.

The invention discloses a steering control device and an electric fan. The steering control device comprises a controller, a recognition module, a stepping motor and a steering motor, wherein the controller is respectively connected with the recognition module, the stepping motor and the steering motor; the controller controls the stepping motor to rotate within a certain angle rang; the recognition module synchronously rotates with the stepping motor, the recognition module scans the certain angle range and recognizes a signal point within the certain angle range in the rotating process, and the recognition module sends a notification signal to the controller when recognizing the signal point; the controller receives the notification signal sent by the recognition module, determines the angular value of the position of the signal point according to the receiving time point of the notification signal and the rotation information of the stepping motor and determines the rotation angle range of the steering motor according to the angular value of the position of the signal point; and the controllers controls the steering motor to rotate within the determined rotation angle range. According to the invention, the problem that the traditional electric fan can not selectively supply air according to the position of a human body and causes resource waste can be solved.

The invention relates to a control system for automatically and manually adjusting the speed of an electric fan according to the ambient environment temperature and the maintaining temperature set by users. In an automatic speed control mode of the invention, the zero-cross detection circuit outputs a zero-cross voltage signal of the input voltage to a singlechip which outputs a control level to conduct controlled silicon after delaying a certain time by taking the signal as a reference point of time and utilizing fast switching property of the unidirectional controlled silicon. According to the result which is collected by a temperature sensor circuit by comparing the ambient environment temperature and the maintaining temperature set by users, the singlechip automatically adjusts the speed of the electric fan by changing the conduction angle of the unidirectional controlled silicon to automatically adjust the AC power output, so that the ambient temperature can be maintained at the maintaining temperature set by users. In a manual mode, the user can make a stepless speed regulation to the electric fan by using input keys and an output display circuit. The control system is stable in circuit, simple in structure and high in control precision.

A powered respiration comprising, an air supplying unit and a filter equipped to a face piece part of said powered respiration, wherein an electric fan, a motor and a battery are installed in said air supplying unit.

A ventilator for supplying breathable gas to the airway of a patient with a respiratory disorder, comprising: a gas flow generator, such as an electric fan, for generating a flow of said breathable gas to the patient, said gas flow generator comprising a gas flow generator chamber provided with a gas inlet opening and a gas outlet opening; a control valve for controlling the flow and / or pressure of the gas distributed to the patient, said control valve comprising a valve body which is movably arranged within a valve chamber, wherein said gas flow generator chamber and said valve chamber are integrally formed in a combined gas flow generator & control valve housing; said valve chamber is located in immediate conjunction to the gas outlet opening of the gas flow generator chamber within said combined gas flow generator & valve housing; and said valve body comprise transitions portions for providing smooth pressure and / or flow transitions during transitions between closed and open positions of said control valve.

A ratcheting mechanism for a fan having a base and a head assembly. The ratcheting mechanism has a pivot having a portion for coupling with the fan head assembly; a member disposed within a portion of the pivot; a extension portion having side walls spaced apart from one another, the pivot and member disposed between the side walls of the extension portion; a pin having a lower portion seated within a base portion of the extension portion, an upper portion of the pin resiliently placed against the collar; and a coupling placed through a central portion of the side walls and the pivot for compressing the side walls against the pivot to maintain a position of the fan head assembly and allowing bi-directional pivoting of the pivot relative to the extension portion in a range of greater than 45 degrees absent a tightening and a loosening of the coupling.

In a vehicular air conditioning control apparatus having a compressor and an electric cooling fan of an externally controlled type, a fan motor control for increasing fan motor load is carried out in a compressor discharge capacity region lower than in normal control in below-listed cases.(1) When a requested cooling performance is predicted to increase.(2) When a vehicle is brought into an idling state.(3) In cool down in which a requested cooling performance is predicted to increase to be equal to or larger than a set value, or when a vehicle is brought into an idling state.

A cooling apparatus for automotive use wherein speed of an electric cooling fan is controlled solely at a predetermined speed. When a relay switch is switched on, voltage of a battery is applied to a lag circuit. Output of the lag circuit is applied to a gate G of a MOS transistor, but rise of the gate-applied voltage is delayed by the lag circuit according to a time constant thereof, and increases slowly. When the gate-applied voltage reaches the threshold voltage of the MOS transistor, the MOS transistor begins to switch on. However, when the gate-applied voltage is low, the drain current flowing through the MOS transistor is limited and thereby surge current at the motor is minimized.

A method of making a piezoelectric fan includes using a portion of the fan blade material as the substrate for the electronic circuit. By this method a single material may serve as both the substrate for the electronic circuitry and as the fanning end of the fan blade. Flex circuitry, including elements such as bleed resistors, inductors, capacitors, DC to AC conversion, shielding, or even drive circuitry, may be used. The piezoelectric material used to power the fan blade may have a Curie temperature high enough to survive reflow soldering, thus allowing the fan to be surface mountable on an electronic device. The fan may include an interconnect to facilitate connecting the piezoelectric material to the electronic circuit of the fan, and to facilitate connecting the electronic circuit of the fan to the electrical system of an electronic device. The interconnect may also facilitate mechanically mounting the fan.

The invention relates to a wind tunnel laundry dryer, comprising wind tunnel, of which one end is connected with fan. Space frame is set on the inner wall of wind tunnel and the wind tunnel achieve the purpose of drying cloth quickly as the high-speed rotary of fan make the air in wind tunnel form convection. By the scheme that one end or two ends of the wind tunnel are connected with the fan in the invention, not only the shortage that prior laundry dryer are not convenience to use in different places and to take is conquered but also the problem that prior fan is provided with single performance is solved. The invention is provided with wide wind resource obtained, using multiple fans in series in the same time, simple structure, low cost, convenience and practicality, using in different places expediently, safety, environmental protection, healthy. It is especially suitable for common people, babies, pupils, baby farms, hostels, hospitals and special industries so on.

The invention provides an electric fan vibration fault detection method and an electric fan vibration fault detection device. The electric fan vibration fault detection method comprises the steps of:acquiring a target video corresponding to a vibrating object which is an electric fan; performing amplification processing on the target video by adopting an Euler motion amplification method, and acquiring an amplified output video having a motion amplification effect of the vibrating object, wherein the motion amplification effect means that the motion condition of the vibrating object in a region where reciprocating motion occurs is amplified in the target video; acquiring a frame sequence corresponding to the amplified output video, and calculating an intersecting cross power spectrum between the frame sequence for the frame sequence by adopting a phase correlation algorithm; performing inverse Fourier transform on the intersecting cross power spectrum to obtain vibration information of pixels in the target video; and matching the vibration information with vibration information corresponding to a standard vibration mode, and determining a vibration fault of the vibrating object according to a matching result. By adopting the electric fan vibration fault detection method and the electric fan vibration fault detection device, the precision of information extraction can be improved, and the reliability of vibration analysis is further improved.

A case that is used for an electronic or electric device has an opening portion arranged at a vicinity of a fan motor that generates airflow inside and outside the case. The opening portion has a protection portion for preventing a finger or other matters from entering the fan motor. The protection portion includes a first rib group extending linearly in a lateral direction, a second rib group extending linearly in a second direction vertical direction. Each of the ribs has an inclined surface that is along a direction of the airflow exhausted from the fan motor and faces the inside or the outside of the opening portion.

The invention relates to a voice control electric fan, which comprises a voice control unit, a speed regulation circuit, an oscillating rotating vane circuit and a timing circuit, wherein the speed regulation circuit, the oscillating rotating vane circuit and the timing circuit are respectively connected with the voice control unit; and the voice control unit is used for receiving voice signals of a user, identifying voice control signals, and sending control signals to the speed regulation circuit, the oscillating rotating vane circuit and the timing circuit according to identification results; by the voice control electric fan, the function of intelligent directional air supply is realized, the fan can automatically judge the direction in which the user is located only by making a preset sound by the user and enable the head of the fan to rotate to the direction in which the user is located, and then the operation of intelligently tracking and oscillating, regulating air speed according to voice signals of the user and the like can be realized to facilitate the usage of the user.

The present invention provides an electric fan with an atomizer. The electric fan includes a stand, a motor, a web, a fan blade within the web and connected to the motor. The water atomizer includes a base member mounted on a front of the web, a rotary member on a front of the base member, a water impact fence surrounding the rotary member, a gear box on a back of the base member and connected to the rotary member, a flexible transmission member connected to the gear box and the motor of the electric fan that the rotary member is driven by the motor, and a water container receiving water therein that the rotary member has at least a portion sinking in the water of the water container.

A portable folding heat-sink assembly for notebook computers implements two or more housings connected at adjacent sides thereof with one or more pivot shafts. Furthermore, heat-sink fans, a circuit board, a switch, and an indication lamp may be optionally settled in some of the housings. Anti-slip pads and supports may be provided at the bottoms of the housings while adjustable pedestals may be provided on the housings. Thus, by the pivot shafts, the heat sink assembly can be expanded for use and can be folded into a reduced volume for portage. Besides, the heat sink assembly can be uprighted on a table to function as an electric cooling fan.

Disclosed is a piezoelectric fan apparatus that uses a plurality of miniaturized piezoelectric fans, and can reduce vibrations that arise in the support unit due to the drive of the piezoelectric oscillators. Four piezoelectric fans (10a-10d) are arranged in a parallel configuration in the widthwise direction, and the ends on the sides opposite to the extending sides of the blades of each piezoelectric fan are connected and supported in a parallel configuration by a support (11). Each piezoelectric fan is provided with a piezoelectric oscillator (13a-13d) which undergoes bending vibrations due to applied voltage, and equipped with a blade (12a-12d) connected to each piezoelectric oscillator so as to be excited by the piezoelectric oscillator. A voltage-applying means (15) is used to drive the two central piezoelectric fans 10b, 10c with the same phase, and since the two piezoelectric fans 10a, 10d at the ends are driven with opposite phase, the center-of-gravity vibrations that act on the support (11) as well as the moment around the three axes are negated.

The invention discloses an intelligent electric fan controller based on a single chip microcomputer, which comprises a central controller, a power supply unit and a display unit. The power supply unit, the display unit, a push-button unit, a clock unit, a temperature detecting unit and an output control unit are respectively connected with the central controller through leads. The problems that a common electric fan can perform gear adjustment only in a manual mode and cannot automatically perform free shifting according to environmental temperature and humidity, and the like.

The invention relates to an energy-saving electric fan with functions of intelligent gear shifting and automatic natural wind control, aiming to effectively solve the problems that motors are easy to heat after long-time use of fans and users are dizzy due to large wind power. The technical scheme includes that the energy-saving electric fan comprises a fan cover, a support, a base, a motor and fan blades; the support is mounted on the base; the fan cover is mounted on the base through a motor casing; the motor is mounted in the motor casing; the fan blades mounted on a motor rotating rod are arranged in the fan cover; an telescopic guide rod is mounted on the motor casing; three pyroelectric infrared sensors are respectively mounted at the upper end of the telescopic guide rod; a natural wind indicator, a top grade indicator, middle grade indicator and a lower grade indicator are mounted on the support side by side; a upper-limit-temperature detecting sensor, a lower-limit-temperature detecting senor and a photoconductive resistor are mounted on the lower portion of the support side by side; a power supply switch, a natural wind forcing switch and a reset button are sequentially mounted on the base; and a control circuit is mounted in the base through a circuit board. Position of a user can be automatically detected; rotating speed of the electric fan can be changed, and controlled in real time; and accordingly, the energy-saving electric fan is good in effect.

A case that is used for an electronic or electric device has an opening portion arranged at a vicinity of a fan motor that generates airflow inside and outside the case. The opening portion has a protection portion for preventing a finger or other matters from entering the fan motor. The protection portion includes a first rib group extending linearly in a lateral direction, a second rib group extending linearly in a second direction vertical direction. Each of the ribs has an inclined surface that is along a direction of the airflow exhausted from the fan motor and faces the inside or the outside of the opening portion.