Patents by Inventor Wen Shi

Wen Shi 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).

  • Fan system and power monitoring apparatus thereof
    Publication number: 20070285859
    Abstract: A power monitoring apparatus for receiving an external input signal includes a first modulating unit, a second modulating unit and a comparing unit. The first modulating unit receives and modulates an input signal into a first signal. The second modulating unit receives and modulates the input signal into a second signal. The comparing unit is electrically connected with the first modulating unit and the second modulating unit and has a first input terminal, a second input terminal and an output terminal. The first input terminal receives the first signal and the second input terminal receives the second signal. When a difference between the first signal and the second signal is higher or lower than a predetermined range, the output terminal outputs a control signal.
    Type: Application
    Filed: March 15, 2007
    Publication date: December 13, 2007
    Inventors: Chia-Pin Wei, Yi-Lun Chen, Wei-Shuo Tseng, Wen-Shi Huang
  • Rotor and manufacturing method thereof
    Publication number: 20070274834
    Abstract: A manufacturing method of a rotor includes the following steps. A substrate is processed to form a first patterned area, a second patterned area and a third patterned area. The second patterned area is formed around the first patterned area, and the third patterned area is connected to the second patterned area. The first patterned area is processed to form a case. The third patterned area is bent towards the case along a joint line between the second patterned area and the third patterned area to form the blades. The rotor includes a case, a connecting portion and the blades. The case is cylindrical and has a sidewall. The connecting portion is extended from one end of the sidewall of the case. The blades are extended from the connecting portion.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 29, 2007
    Inventors: Wen-Shi Huang, Lee-Long Chen, Chun-Hua Yang, Wen-Cheng Chen
  • Fan motor control method and device thereof
    Publication number: 20070274694
    Abstract: A fan motor control device comprises a clock signal generator and a drive unit. The clock signal generator generates a low-frequency clock signal. A frequency of low-frequency clock signal is less than 23 KHz. The drive unit converts the low-frequency clock signal to a high-frequency drive signal and outputs the high-frequency drive signal to drive the fan motor. A frequency of the high-frequency drive signal is higher than 23 KHz.
    Type: Application
    Filed: February 26, 2007
    Publication date: November 29, 2007
    Inventors: Chia-Feng Wu, Yueh-Lung Huang, Ming-Shi Tsai, Wen-Shi Huang
  • Assembly of blade units for wind power generation
    Publication number: 20070269312
    Abstract: A blade unit assembly for wind power generation includes a plurality of blade units connected together. Each blade unit includes a central portion and at least one blade set. A first positioning structure and a second positioning structure, which fit together with each other, are respectively disposed at two opposite end faces of the central portion. The blade set is connected to the central portion. The blade unit assembly is formed by engaging the first positioning structure of one of the blade units with the second positioning structure of another adjacent one of the blade units.
    Type: Application
    Filed: February 22, 2007
    Publication date: November 22, 2007
    Inventors: Wei-Chun Hsu, Shun-Chen Chang, Wen-Shi Huang
  • Motor and magnetic bearing assembly thereof
    Publication number: 20070262669
    Abstract: A motor includes a stator, a rotor, and a plurality of blades. The stator includes a stator base with an opening, a first magnetic structure disposed at a bottom of the opening, a magnetic pole disposed on the stator base, and a second magnetic structure disposed at a top of the magnetic pole. The rotor, coupled to the stator, includes a hub, a shaft, a third magnetic structure disposed at the hub and encircled one en of the shaft and corresponded to the first magnetic structure, and a fourth magnetic structure disposed at the hub without contacting the second magnetic structure. The blades encircle the rotor. The first and third magnetic structures attract the second and the fourth magnetic structures, respectively.
    Type: Application
    Filed: July 19, 2007
    Publication date: November 15, 2007
    Inventors: Lee-Long Chen, Chien-Heiung Huang, Shih-Ming Huang, Wen-Shi Huang
  • Fan control system
    Patent number: 7294980
    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: Grant
    Filed: July 26, 2006
    Date of Patent: November 13, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Wen-Churn Ma, Venson Kuo, Wen-Shi Huang
  • Fan and impeller thereof
    Publication number: 20070258812
    Abstract: A fan includes a housing, an impeller and a motor. The housing has a main body, a motor base and at least one supporting member disposed between the main body and the motor base. The impeller is disposed on the motor base and has a hub and a plurality of blades disposed around the hub. The motor is connected to the impeller for driving the impeller to rotate. Each of the blades is connected to the hub at a predetermined angle ranging from 22.5 degrees to 36 degrees.
    Type: Application
    Filed: April 25, 2007
    Publication date: November 8, 2007
    Inventors: Chin-Hong Lee, Sung-Wei Lee, Wen-Shi Huang
  • Low-abrasion rotating structure
    Patent number: 7291952
    Abstract: A low-abrasion rotating structure includes a stator set, a rotor set, and a rotating shaft. A stator hole is defined at a center of the stator set. A rotor hole is defined at a center of the rotor set. The rotating shaft is disposed in both the stator hole and the rotor hole to connect the stator set and the rotor set, and is rotatable in respect to the stator set and the rotor set.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: November 6, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Lee-Long Chen, Chien-Hsiung Huang, Wen-Shi Huang
  • Heat-dissipating fan and its housing
    Publication number: 20070253814
    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: Application
    Filed: July 6, 2007
    Publication date: November 1, 2007
    Inventors: Cin-Hung Lee, Shun-Chen Chang, Kuo-Cheng Lin, Wen-Shi Huang, Hsiou-Chen Chang
  • Cowling
    Publication number: 20070248449
    Abstract: A cowling of the invention includes a cover body and an empennage connected with the cover body. The cover body includes an accommodating space for receiving an impeller, and a first opening serving as an air inlet for the impeller. According to the wind direction, the empennage will adjust the first opening to the proper position to face the wind.
    Type: Application
    Filed: January 31, 2007
    Publication date: October 25, 2007
    Inventors: Wei-Chun Hsu, Shun-Chen Chang, Wen-Shi Huang
  • Fan and impeller thereof
    Patent number: 7281896
    Abstract: An impeller includes a hub and at least one blade. In this case, the hub has at least one balancing portion disposed on hub and arranged with respect to a center of the hub. The balancing portion has at least one corner. The blades are disposed around the hub. In addition, a fan including the impeller is also provided. The impeller and the fan can enhance the rotation stability. As a result, the product reliability and lifetime can be increased. Furthermore, the impeller and the fan facilitate the balancing object to be separated from the tool at the corner.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: October 16, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Po-Hao Yu, Shun-Chen Chang, Wen-Shi Huang
  • Fan protection method and fan system
    Publication number: 20070236846
    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.
    Type: Application
    Filed: June 7, 2007
    Publication date: October 11, 2007
    Inventors: Chun-Lung Chiu, Po-Tsun Kuo, Wen-Shi Huang
  • PWM buffer circuit for adjusting a frequency and a duty cycle of a PWM signal
    Patent number: 7279947
    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: Grant
    Filed: September 9, 2003
    Date of Patent: October 9, 2007
    Assignee: Delta Electronics, Inc.
    Inventors: Chun-Iung Chiu, Wen-shi Huang
  • Fan, bearing and sleeve thereof
    Publication number: 20070231136
    Abstract: A bearing includes an axial hole and a plurality of first grooves. The first grooves are disposed formed on the inner wall of the bearing, and extends through the top surface and to the outer wall of the bearing. The lubricant oil originally hold in the bearing can be guided to flow around the whole bearing effectively.
    Type: Application
    Filed: February 22, 2007
    Publication date: October 4, 2007
    Inventors: Wei-Chun Hsu, Shun-Chen Chang, Wen-Shi Huang
  • 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