Patents by Inventor Wen-shi Huang

Wen-shi Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ROTARY STRUCTURE OF PERMANENT MAGNET ELECTRIC MACHINERY AND METHOD FOR DETERMINING THE STRUCTURE THEREOF
    Publication number: 20080150386
    Abstract: A rotary structure of a permanent magnet electric machine including a stator and a rotor is provided. The stator has K salient teeth peripherally spaced with equal intervals for forming K winding slots, wherein K is a natural number greater than 1. The rotor has an annular inner surface and has P pairs of permanent magnets peripherally spaced with equal intervals along the inner surface for rotating around the stator, wherein P is a natural number. Each permanent magnet having two sides along a peripheral direction of the rotor includes a pair of inclined surfaces on the two sides, the pair of inclined surfaces is symmetric with respect to a radial plane of the each permanent magnet, and an inclined angle ? between the inclined surface and the radial plane is selected from a range of 90(1?1/(4P))<?<90(1+1/(4P)).
    Type: Application
    Filed: August 28, 2007
    Publication date: June 26, 2008
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Shih-Ming HUANG, Wen-Shi HUANG, Li-Jian WU, Wan-Bing JIN, Jian-Ping YING
  • Fan assembly and impeller thereof
    Patent number: 7387496
    Abstract: A fan assembly and impeller thereof. The fan assembly includes a plurality of blades and a hub. The hub includes an upper surface and a center point. The blades have bottom portions arranged in a circle on the upper surface with respect to the center point.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: June 17, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Te-Fu Chen, Tsung-Yu Lei, Kuo-Cheng Lin, Wen-Shi Huang
  • Fan assembly
    Patent number: 7380955
    Abstract: A fan assembly. The fan assembly is applicable to a light source that produces heat. The fan assembly comprises a frame and an impeller. The frame comprises an opening, and a periphery of the opening has a curved surface. The impeller is disposed in the frame. When light emitted from the light source enters the opening, the light is blocked from penetrating the opening by the curved surface.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: June 3, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Lobato Lu, Ke-Nan Wang, Wen-Shi Huang
  • Moisture-proof device for motor
    Patent number: 7362021
    Abstract: A moisture-proof device is provided to be used in a fan having a stator for isolating the stator from moisture. The moisture-proof device includes a first covering part for covering a circuit board of the stator of the motor, and a second covering part connected to the first covering part for covering a coil and a core of the stator of the motor, thereby isolating the stator of the motor from moisture, wherein the first covering part and the second covering part are integrally formed as a single piece, wherein the moisture-proof device is disposed in a hub of the fan.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: April 22, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Wen-Shi Huang, Shun-Chen Chang
  • Fan system and driving control device of motor
    Publication number: 20080088463
    Abstract: A driving control device of a motor includes a temperature sensing circuit, a comparing circuit, a rotation speed control circuit and a driving circuit. The temperature sensing circuit detects an environmental temperature for generating a sensing signal. The comparing circuit is electrically connected to the temperature sensing circuit, and compares the sensing signal with a reference voltage signal for outputting a comparing signal. The rotation speed control circuit is electrically connected to the comparing circuit and has a first threshold voltage and a second threshold voltage, both of which are compared with the comparing signal for outputting a rotation speed control signal. The driving circuit is electrically connected to the rotation speed control circuit, and generates a driving signal to drive the motor in accordance with the rotation speed control signal.
    Type: Application
    Filed: September 14, 2007
    Publication date: April 17, 2008
    Inventors: Chia-Huang Wu, Yen-Hung Wu, Yi-Chieh Cho, Yueh-Lung Huang, Wen-Shi Huang
  • Heat dissipation module and fan thereof
    Publication number: 20080084663
    Abstract: A heat dissipation module is disclosed. The heat dissipation module includes fan and at least a heat sink. The fan includes a frame and an impeller. The frame includes a body and at least an extension. The extension protrudes from at least a side of the body. The extension or the body is connected with the circuit board. The impeller is disposed in the body. The heat sink is connected with the extension for dissipating heat produced from the electronic element.
    Type: Application
    Filed: September 26, 2007
    Publication date: April 10, 2008
    Inventors: Hao-Wen Ko, Tsung-Yu Lei, Wen-Shi Huang
  • Liquid-cooled heat dissipation module
    Patent number: 7352577
    Abstract: A liquid-cooled heat dissipation module for circularly dissipating heat from a heat source. The liquid-cooled heat dissipation module includes a fan having a base; a pump disposed on the base; a heat sink coupled to the fan and having an opening to receive the pump; and a guide part disposed in the opening of the heat sink, communicated to the pump and having an outer surface, a through hole and a guide passage formed on the outer surface. The pump drives a working fluid in the liquid-cooled heat dissipation module to pass through the through hole, the pump and the guide passage to circularly dissipate heat.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: April 1, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Lee-Long Chen, Chien-Hsiung Huang, Yu-Hsien Lin, Wen-Shi Huang, Chin-Ming Chen
  • FAN ASSEMBLY AND IMPELLER THEREOF
    Publication number: 20080075598
    Abstract: A fan assembly and impeller thereof. The impeller comprises a hub having an upper surface, an axial sidewall extended along the axis of the impeller, and a corner connected between the upper surface and the axial sidewall; and a plurality of blades directly connected to the upper surface, the corner or the axial sidewall of the hub to define an air-intake space between an inner edge of the blades faced to the axis of the impeller and the upper surface of the hub for allowing the intake airflow to radially flow toward the blades.
    Type: Application
    Filed: November 28, 2007
    Publication date: March 27, 2008
    Inventors: Te-Fu CHEN, Tsung-Yu Lei, Kuo-Cheng Lin, Wen-Shi Huang
  • Brushless DC motor drive apparatus
    Patent number: 7348744
    Abstract: A brushless DC motor drive apparatus for driving a rotor includes a drive circuit rotating the rotor, a current shutdown and auto-restart circuit coupled to the drive circuit, and a DC voltage comparison circuit coupled to the current shutdown and auto-restart circuit. The current shutdown and auto-restart circuit detects blockage of the rotor via the DC voltage comparison circuit and shuts off the power to the drive circuit accordingly.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: March 25, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Chih-Lun Liao, Lee-Long Chen, Yueh-Lung Huang, Wen-Shi Huang
  • Method for starting single phase BLDCM having asymmetrical air gap
    Patent number: 7345440
    Abstract: A method for starting a motor having a stator, a rotor, a winding and an asymmetrical air gap is accomplished using several steps. The steps include: (a) providing the motor at standstill; (b) exciting the winding for a specific time period with a current impulse having a first amplitude to obtain a first specific position of the rotor with respect to the stator; (c) decreasing the first amplitude down to a second amplitude gradually by a controller to make the rotor to be positioned at a second specific position with respect to the stator after the specific time period, wherein the second amplitude is one of zero ampere and a specific value close to zero ampere, and the rotor is rotating close to the second specific position with an almost zero rotating speed when the second amplitude is reached.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: March 18, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Weizi Wang, Zhigan Wu, Wanbing Jin, Jianping Ying, Qiong Yuan, Shih-Ming Huang, Wen-Shi Huang
  • Fan assembly and fan frame thereof
    Patent number: 7344358
    Abstract: A fan assembly and fan frame thereof. A housing includes an opening. A motor base is disposed in the housing. A plurality of ribs are disposed in the opening and between the housing and the motor base for supporting the motor base. Each rib has a varied cross section from the motor base to the housing.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: March 18, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Lobato Lu, Ke-Nan Wang, Wen-Shi Huang
  • Blower
    Patent number: 7338256
    Abstract: A blower comprises a housing and an impeller. The housing comprises a side outlet and an inlet comprising a predetermined profile, and the impeller is disposed in the housing. The predetermined profile is quadratrical, elliptical, polygonal, non-coaxial circle, or irregularly closed shaped. A flow tunnel is disposed between the impeller and the housing.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: March 4, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Yu-Chien Kuo, Tsu Liang Lin, Ming-Shi Tsai, Wen-Shi Huang
  • Stator structure of motor
    Patent number: 7339301
    Abstract: A stator structure comprising at least one first magnetic conductive plate and at least one second magnetic conductive plate, each magnetic conductive plate having a plurality of radial arms and pole tooth provided on ends of the radial arms, wherein the pole teeth of the first and second magnetic conductive plates have different shapes.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: March 4, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Lee-long Chen, Shih-ming Huang, Wen-shi Huang
  • Fan control system
    Publication number: 20080036403
    Abstract: A fan control system. The system includes a plurality of fans, each having a control device. One of the fans is designated as a master fan and others are served as slave fans according to a specific designation method, wherein the control device of the master fan actively monitors and controls the operating state of the slave fans according to the control device of the slave fans to amend the operating state of all fans.
    Type: Application
    Filed: October 15, 2007
    Publication date: February 14, 2008
    Inventors: Wen-Churn Ma, Venson Kuo, Wen-Shi Huang
  • Heat dissipation fans and housings therefor
    Patent number: 7329091
    Abstract: A heat dissipation fan and a housing thereof. The heat dissipation fan includes a housing and a plurality of blades. The housing includes an outer frame, a base, and a plurality of air-guiding elements. The base is disposed in the outer frame, supporting the blades thereon. The air-guiding elements are disposed between the base and the outer frame, having a first curved surface, a second curved surface, and a bottom surface.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: February 12, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Cheng-Wei Yan, Tsu-Liang Lin, Wen-Shi Huang
  • Motor control method and device thereof
    Patent number: 7323838
    Abstract: A motor control method and device. The motor control device includes a programmable integrated circuit (IC) receiving a phase signal, the phase of which is consistent with the rotation phase of a coil of the motor. The programmable IC generates a duty-cycle signal in accordance with the period of the phase signal. The duty-cycle signal comprises a rising segment and a falling segment and when the phase signal changes phase, the duty cycle represented by the duty-cycle signal is a first duty cycle, allowing the input power of the motor remain at a minimum. The duty-cycle signal is input to the coil, controlling the coil on and off and, thereby rotating the motor.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: January 29, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Wen-Chuan Ma, Yen-Hung Chen, Po-Tsun Kuo, Chun-Lung Chiu, Wen-Shi Huang
  • Hot-swap circuit system for fan tray module
    Patent number: 7324316
    Abstract: A hot-swap circuit system for fan tray module includes a soft-start circuit module in charge of the power start of the fan tray module hot-plugged into an application system. The soft-start circuit module includes a capacitor and a field effect transistor. The capacitor discharges and the field effect transistor turns off when an input voltage is changed from a certain value to zero.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: January 29, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Hunter Chen, Chun-Lung Chiu, Wen-Shi Huang
  • Centrifugal fan and housing thereof
    Publication number: 20080019825
    Abstract: A centrifugal fan. The centrifugal fan has at least one air inlet and one air outlet, and at least one set of rotor blades. A sidewall extends downward from an inner margin of the air inlet to define an air-gathering chamber in the housing of the centrifugal fan for increasing airflow pressure and heat dissipating efficiency.
    Type: Application
    Filed: August 13, 2007
    Publication date: January 24, 2008
    Inventors: Shun-Chen Chang, Wen-Shi Huang
  • METHOD AND CIRCUIT FOR TESTING MOTOR
    Publication number: 20080018285
    Abstract: A method for testing a motor having a rotor and a winding is provided. The method includes steps of (a) providing a power to rotate the rotor to a predetermined speed, (b) removing the power, (c) measuring a terminal voltage of the winding while a current within the winding is zero, (d) obtaining a back electromotive force in the winding by compensating the terminal voltage with a performance of the rotor, (e) selecting a characteristic of the back electromotive force and (f) determining a magnetization of the motor by comparing the characteristic with a predetermined parameter.
    Type: Application
    Filed: May 30, 2007
    Publication date: January 24, 2008
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Li-Jian Wu, Wan-Bing Jin, Jian-Ping Ying, Shih-Ming Huang, Wen-Shi Huang
  • Fan housing and wire clipping mechanism thereof
    Publication number: 20080014085
    Abstract: A fan housing includes a first frame and a second frame. The first frame includes a clip member protruding toward the second frame, and a limit member connected with the clip member. The limit member has a slot along the outer wall of the first frame so that a wire can pass through the slot. The second frame includes an engaging member corresponding to the clip member and having a recess to be engaged with the clip member. When the first and second frames are combined, the wire will be securely fastened in the slot.
    Type: Application
    Filed: July 13, 2007
    Publication date: January 17, 2008
    Inventors: Chih-Hua Lin, Chao-Wen Lu, Wen-Shi Huang