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).

  • Magnetic bearing system
    Patent number: 7276828
    Abstract: A magnetic bearing system for a rotating machine is disclosed. The magnetic bearing system provides a non-contacting radial rigid support for the rotating machine by employing two magnetic assemblies each being formed by stacked annular magnets. The magnetic assemblies are mounted separately on a shaft of the rotating machine and a shaft hole provided on the stator seat of the rotating machine for containing the shaft.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: October 2, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Ting-Jen Yeh, Kun-Fu Chuang, Wen-Shi Huang
  • Heat-dissipating fan and its housing
    Patent number: 7275911
    Abstract: A heat-dissipating fan with an upward air-guiding member is provided. The heat-dissipating fan includes a housing, an impeller having a hub and a plurality of blades disposed around the hub, a base disposed inside the housing for supporting the impeller thereon, and an air-guiding member disposed between the base and the housing, wherein the air-guiding member has at least one inclined edge on the windward side or its opposite side relative to the horizontal line perpendicular to the axis of the heat-dissipating fan.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: October 2, 2007
    Assignee: Delta Electronics Inc.
    Inventors: Chin-Hung Lee, Shun-Chen Chang, Kuo-Cheng Lin, Wen-Shi Huang, Hsiou-Chen Chang
  • Serial fan assembly and air-guiding structure thereof
    Publication number: 20070224039
    Abstract: A serial fan assembly includes a first fan, a second fan and at least one air-guiding structure. The first and second fans are arranged in serial, and the air-guiding structure is disposed therebetween, for guiding an airflow to follow a direction parallel to an axial direction of the serial fan assembly when the airflow exits from the first fan and enters the second fan, thereby increasing air volume and air pressure of the serial fan assembly and reducing noise during operation. Also, power loss is compensated, and flexibility of assembly and fabrication are improved.
    Type: Application
    Filed: March 12, 2007
    Publication date: September 27, 2007
    Inventors: Chia-Ming Hsu, Shun-Chen Chang, Wen-Shi Huang
  • PWM BUFFER CIRCUIT FOR ADJUSTING A FREQUENCY AND A DUTY CYCLE OF A PWM SIGNAL
    Publication number: 20070216458
    Abstract: A PWM buffer circuit includes a duty cycle converting circuit and a frequency-fixed PWM signal generating circuit. The duty cycle converting circuit is used for receiving a first PWM signal and then generating a duty cycle reference voltage on the basis of the first PWM signal. The duty cycle reference voltage is a one-to-one mapping function of the first duty cycle. The frequency-fixed PWM signal generating circuit is used for receiving the duty cycle reference voltage and then outputting a second PWM signal with a fixed frequency. The second PWM signal has a second duty cycle, which is determined in accordance with the duty cycle reference voltage. In addition, the second duty cycle is a one-to-one mapping function of the duty cycle reference voltage.
    Type: Application
    Filed: May 21, 2007
    Publication date: September 20, 2007
    Inventors: Chun-lung Chiu, Wen-shi Huang
  • Fan module and control device thereof
    Patent number: 7271561
    Abstract: Fan module and control device thereof. The fan module comprises a plurality of fans and the control device. The control device comprises a temperature sensing circuit, and a driving circuit. The temperature sensing circuit detects an ambient temperature of the fans and generates a sensing signal accordingly. The driving circuit is coupled between the fans and temperature sensing circuit, and comprises a fully powered operating mode and a power-saving operating mode, wherein the driving circuit selects different operating modes in accordance with the sensing signal, and generates a fan driving signal controlling the speed of the fans.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: September 18, 2007
    Assignee: Delta Electronic, Inc.
    Inventors: Chien Hua Chen, Chun-Lung Chiu, Wen-Chuan Ma, Wen-Shi Huang
  • Heat-dissipating device
    Patent number: 7267526
    Abstract: A heat-dissipating device includes a housing having an air inlet and an air outlet, and a blade structure disposed in the housing and having a hub and a plurality of rotor blades. The housing has an inwardly extending sidewall to define an accelerating airflow passage between the sidewall, the hub and the rotor blades for effectively increasing the airflow pressure and stabilizing the discharged airflow.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: September 11, 2007
    Assignee: Delta Electronics Inc.
    Inventors: Wei-Chun Hsu, Shun-Chen Chang, Wen-Shi Huang
  • Fan, motor and impeller thereof
    Publication number: 20070205676
    Abstract: An impeller, which is driven by a stator, includes a conducting shell, a hub and a plurality of blades. The conducting shell covers at least one side of the stator. The hub covers the conducting shell. At least one air gap is formed between the hub and the stator. A top portion of the hub has an opening to partially expose a top portion of the conducting shell. At least one airflow passage is formed between an inner wall of the hub and an outer surface of the conducting shell. The airflow passage has at least one inlet connected with the opening and at least one outlet connected with the air gap. The blades are disposed around the circumferences of the hub.
    Type: Application
    Filed: January 25, 2007
    Publication date: September 6, 2007
    Inventors: Chung-Kai Lan, Hung-Chi Chen, Wen-Shi Huang
  • Serial fan with toothed-type connecting elements
    Publication number: 20070173190
    Abstract: A serial fan of the present invention includes a first fan and a second fan, each of which includes a housing and an impeller disposed in the housing. The housings respectively include a plurality of connecting elements, and there are several air-guiding recesses defined on the connecting elements of the first fan or the second fan, which can guide air to smoothly flow out from the housing so as to increase airflow and air pressure and reduce noise.
    Type: Application
    Filed: December 27, 2006
    Publication date: July 26, 2007
    Inventors: Shuo-Shiu Hsu, Shun-Chen Chang, Wen-Shi Huang
  • Fan and impeller thereof
    Publication number: 20070172350
    Abstract: A fan includes an impeller and a motor. The impeller includes a hub and a plurality of blades. The hub has a top portion, a connection portion, and at least one airflow-guiding portion. The top portion is connected to the connection portion. The blades are disposed around the connection portion. The motor is disposed corresponding to the impeller and used to drive the impeller to rotate. The airflow-guiding portion is disposed between two adjacent blades.
    Type: Application
    Filed: January 19, 2007
    Publication date: July 26, 2007
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Shihhua Ho, Shihying Huang, Tsung-Yu Lei, Chung-Kai Lan, Huan-Chi Chen, Wen-Shi Huang
  • Water pump and bearing thereof
    Publication number: 20070159020
    Abstract: A bearing of a water pump is adapted to be used with a washer and includes an approximately cylindrical body with an axial hole defined in its center. One end surface of the bearing, which faces the washer, has a nick for forming a water membrane so as to reduce friction and adhesion between the bearing and the washer.
    Type: Application
    Filed: June 8, 2006
    Publication date: July 12, 2007
    Inventors: Hou-Chu Chen, Shui-Fa Tsai, Chin-Chu Hsu, Wen-Shi Huang
  • Centrifugal fan and fan frame thereof
    Publication number: 20070160462
    Abstract: A fan frame includes a first housing and a second housing. The first housing has at least one first inlet, and the second housing has at least one second inlet. The combination of the first housing and the second housing forms two independent airflow passages, at least one first outlet and at least one second outlet. A centrifugal fan including the fan frame is also disclosed.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 12, 2007
    Inventors: Chung-Yuan Tsang, Wen-Shi Huang, Yung-Yu Chiu
  • Stator structure
    Publication number: 20070159014
    Abstract: A stator structure includes at least one stator part having a single rolled steel sheet to serve as a waist post with a gap. A first stator part includes a first engaging portion. A second stator part includes a second engaging portion corresponding to the first engaging portion. The first and second stator parts are of the same material. When the first stator part is assembled with the second stator part, the first engaging portion is engaged with the second engaging portion so as to form the stator structure with a waist post.
    Type: Application
    Filed: March 6, 2007
    Publication date: July 12, 2007
    Inventors: Lee-Long Chen, Shih-Wei Huang, Shih-Ming Huang, Wen-Shi Huang
  • Centrifugal fan and its stator structure
    Publication number: 20070159015
    Abstract: A base structure of a centrifugal fan comprises a base and a fixing element. The base has a recess disposed at the edge of the base. The fixing element has a first end and a second end. The first end is connected with the base. The second end covers the recess.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 12, 2007
    Inventors: Yu-Chih Lin, Hung-Chi Chen, Wen-Shi Huang
  • Starting method for Hall-less single-phase BLDCM
    Patent number: 7242160
    Abstract: The methods for starting a Hall-less single-phase BLDCM having an asymmetrical air gap are proposed. The provided methods are employed to input a specific amount of current impulse and stop the current impulse at a specific time such that the rotor of the single-phase BLDCM having an asymmetrical air gap can be realized to rotate in the pre-determined direction through one of the cogging torque and the rotor inertia after that specific time so as to accomplish the normal starting of a motor without the Hall-effect sensor.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: July 10, 2007
    Assignee: Delta Electronics Inc.
    Inventors: Weizi Wang, Zhigan Wu, Wanbing Jin, Jianping Ying, Lijian Wu, Shih-Ming Huang, Wen-Shi Huang
  • Fan protection method and apparatus
    Patent number: 7242562
    Abstract: The present invention discloses a fan protection apparatus and related method thereof. The fan protection apparatus has a control circuit and a counter. According to the fan protection method, the user can set the acceptable restart number and the special time for auto restart. The fan protection apparatus and method can force to stop the fan when the fan encounters an abnormal situation. When the stop time has passed, the fan is automatically restarted. The present invention counts the number of restarts. If the number of restarts equals the set number and the abnormal situation also cannot be eliminated, the present invention cuts off power to the fan.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: July 10, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Lien-Ken Lin, Chun-Lung Chiu, Po-Tsun Kuo, Wen-Shi Huang
  • Centrifugal fan with stator blades
    Patent number: 7241110
    Abstract: A centrifugal fan with stator blades. The centrifugal fan includes a first frame, a second frame, a driving device, and a blade structure with a first portion and a second portion. The second frame includes a plurality of stator blades thereon. The first portion is coupled with the driving device, and includes a plurality of first rotor blades thereon. The second portion is combined with the first portion and includes a plurality of second rotor blades thereon. The stator blades are located between the first rotor blades and the second rotor blades respectively.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: July 10, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Shun-Chen Chang, Kuo-Cheng Lin, Wen-Shi Huang
  • Three-phase opposite rotating motor and fan
    Publication number: 20070152536
    Abstract: A three-phase opposite rotating motor of a fan comprises a stator having a three-phase coil set without a core, a first rotor and a second rotor. The number of the poles of the first rotor is unequal to the number of the poles of the second rotor. The ratio of the number of solenoids of the three-phase coil set and the number of the first poles of the first rotor is 3:4, and the ratio of the number of solenoids of the three-phase coil set and the number of the second poles of the second rotor is 3:2, to ensure the motor works normally in an opposite rotating operation.
    Type: Application
    Filed: December 29, 2006
    Publication date: July 5, 2007
    Inventors: Kun-Fu Chuang, Shun-Chen Chang, Shih-Ming Huang, Wen-Shi Huang
  • Serial fan with a plurality of rotor vanes
    Patent number: 7238004
    Abstract: A serial fan includes a frame, a plurality of rotor vanes, at least one motor for driving the rotor vanes and a support connected to the frame through a plurality of connecting parts for receiving the at least one motor. The plurality of rotor vanes are arranged in series in the frame along an axial direction and the plurality of connecting parts are disposed therebetween to minimize space occupied by the serial fan in the axial direction, and effectively increase the blast pressure.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: July 3, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Kuo-cheng Lin, Wen-shi Huang, Shun-chen Chang, Pohao Yu
  • Fan system and speed detecting device thereof
    Publication number: 20070145920
    Abstract: A fan system includes a driving device, a speed detecting device and a logic device. The driving device generates a speed detecting signal and a predetermined alarm signal. The speed detecting device, which is electrically connected with the driving device, receives the speed detecting signal, and generates a low speed signal when the speed detecting signal is lower than a reference signal. The logic device is respectively electrically connected with the driving device and the speed detecting device, and generates an alarm signal when the logic device receives the predetermined alarm signal or the low speed signal.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 28, 2007
    Inventors: Chia-Feng Wu, Cheng-Chieh Liu, Ching-Sen Hsieh, Yueh-Lung Huang, Wen-Shi Huang
  • Fan and fan housing thereof
    Publication number: 20070147992
    Abstract: A fan includes an impeller, a fan housing and a motor. The fan housing includes a frame, a base and a plurality of stationary blade sets. The base is disposed inside the frame. Each of the stationary blade sets includes a plurality of stationary blades disposed between the frame and the base. The motor is disposed onto the base to drive the impeller to rotate. At least one stationary blade of one stationary blade set has a different shape, dimension or inclined angle from that of at least one stationary blade of another stationary blade set.
    Type: Application
    Filed: April 20, 2006
    Publication date: June 28, 2007
    Inventors: Po-Hao Yu, Wen-Shi Huang