Patents by Inventor Yuichi Kajino

Yuichi Kajino 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).

  • Patent number: 6871696
    Abstract: A vehicle seat air-conditioning system is used with a main air-conditioning unit which operates in one of a plurality of air blow modes. The main air-conditioning unit has an air-conditioned air outlet-port for supplying air-conditioned air irrespective of the air mode. The vehicle seat air-conditioning system includes an air-conditioned air duct connected to the air-conditioned air outlet-port, a seat-air duct connected to the air-conditioned air duct to supply the air-conditioned air to the inside of a seat and an air blower unit for blowing the air-conditioned air.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: March 29, 2005
    Assignee: Denso Corporation
    Inventors: Shinji Aoki, Yuichi Kajino, Takeshi Yoshinori
  • Patent number: 6793016
    Abstract: A vehicle air conditioning system includes a space air conditioning unit for blowing conditioned air into a passenger compartment, a seat air conditioning unit for blowing air into a vehicle seat, and a control unit for controlling the space air conditioning unit and the seat air conditioning unit. The control unit includes space controlling means for controlling the space air conditioning unit in accordance with a space control value calculated based on a space target air temperature, and seat controlling means for controlling the seat air conditioning unit in accordance with a seat control value calculated based on the space target air temperature. Further, the seat controlling means includes a first seat air conditioning means which determines the seat control value in a steady air conditioning state of the passenger compartment, and a second seat air-conditioning means which determines the seat control value in a transition air-conditioning state of the passenger compartment.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: September 21, 2004
    Assignee: DENSO Corporation
    Inventors: Shinji Aoki, Takeshi Yoshinori, Koji Sakai, Yuichi Kajino
  • Patent number: 6718783
    Abstract: In a vehicle air conditioner with an automatic air-conditioning control, when a change operation of a set temperature is not performed by a passenger while air conditioning control is performed based on the set temperature in one region of environment condition, it is determined that the one region is a region corresponding to a passenger's preference. Accordingly, even if the change operation of the set temperature is not performed, when the region is stored once for the air conditioning control, the region is used as a learned region. Further, when the change operation of the set temperature is performed in an another region, a correction of the set temperature of the learned region is restricted. Thus, it can restrict the set temperature of a region, which is satisfied by the passenger from being changed.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: April 13, 2004
    Assignee: Denso Corporation
    Inventors: Akira Ohga, Takayoshi Kawai, Yuichi Kajino, Yoshinori Ichishi, Tatsumi Kumada
  • Patent number: 6705098
    Abstract: A vehicle air conditioner has a standby RAM having a map memorizing many regions of, for example, preset temperature, each of which is determined by environmental conditions such as the inside/outside air temperatures and the sunlight amount. The air conditioner automatically controls the air conditioning of the passenger compartment of the vehicle based on the information stored in the region of the map determined by the environmental conditions that is regarded as a control preset temperature used for calculating a target blowing temperature in a control flow repeating cyclically. When the preset temperatures read at the previous cycle and the current cycle are different from each other, the control preset temperature is regarded as the preset temperature which changes gradually from the previous one to the current one, whereby the temperature of air blown into the passenger compartment gradually changes.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: March 16, 2004
    Assignee: Denso Corporation
    Inventors: Takayoshi Kawai, Akira Ohga, Yuichi Kajino
  • Patent number: 6659358
    Abstract: The air conditioner includes a surface temperature sensor for detecting a surface temperature of a clothes portion of a passenger. In the air conditioner, a thermal-feeling estimation value for the passenger is calculated based on the surface temperature of the clothes portion of the passenger, and air-conditioning operation of a passenger compartment is controlled based on the thermal-feeling estimation value. Accordingly, in the air conditioner, the thermal feeling can be always accurately estimated, and comfortable air-conditioning control can be performed using the thermal-feeling estimation value.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: December 9, 2003
    Assignee: Denso Corporation
    Inventors: Toshifumi Kamiya, Takayoshi Kawai, Akira Ohga, Yuichi Kajino
  • Publication number: 20030211820
    Abstract: In a car defroster which detects the clouding on the window glass by a sensor and blows conditioned air out from the defroster port to the window glass to remove the blur, an infrared sensor 1 is used as the sensor for measuring the surface temperature of the window glass, and the defrosting operation is carried out according to the measuring result. The infrared sensor is provided, for example, at a center of the ceiling of the passenger compartment, and consists of at least two sensor elements so that the temperatures of window glasses in a plurality of directions are detectable.
    Type: Application
    Filed: May 7, 2003
    Publication date: November 13, 2003
    Inventors: Yoshinori Tsuji, Yuichi Kajino, Masahiko Sugaya
  • Patent number: 6644558
    Abstract: In a vehicle air conditioner, when a passenger manually reduces an air blowing amount in a large blowing amount area of automatic control, a correction of the blower voltage control characteristic is changed in accordance with a condition capable of determining a passenger's request. For example, as the condition, at least one of a target blowing temperature of air blown into a passenger compartment and a passed time after start of the automatic control can be used. Therefore, the corrected blower voltage control characteristic after the manual operation can be made suitable for the passenger's preference.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: November 11, 2003
    Assignee: Denso Corporation
    Inventors: Akira Ohga, Takayoshi Kawai, Yoshinori Ichishi, Yuichi Kajino
  • Publication number: 20030164000
    Abstract: In a vehicle air conditioner with an automatic air-conditioning control, when a change operation of a set temperature is not performed by a passenger while air conditioning control is performed based on the set temperature in one region of environment condition, it is determined that the one region is a region corresponding to a passenger's preference. Accordingly, even if the change operation of the set temperature is not performed, when the region is stored once for the air conditioning control, the region is used as a learned region. Further, when the change operation of the set temperature is performed in an another region, a correction of the set temperature of the learned region is restricted. Thus, it can restrict the set temperature of a region, which is satisfied by the passenger from being changed.
    Type: Application
    Filed: February 27, 2003
    Publication date: September 4, 2003
    Inventors: Akira Ohga, Takayoshi Kawai, Yuichi Kajino, Yoshinori Ichishi, Tatsumi Kumada
  • Publication number: 20030089788
    Abstract: In a vehicle air conditioner, when a passenger manually reduces an air blowing amount in a large blowing amount area of automatic control, a correction of the blower voltage control characteristic is changed in accordance with a condition capable of determining a passenger's request. For example, as the condition, at least one of a target blowing temperature of air blown into a passenger compartment and a passed time after start of the automatic control can be used. Therefore, the corrected blower voltage control characteristic after the manual operation can be made suitable for the passenger's preference.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 15, 2003
    Inventors: Akira Ohga, Takayoshi Kawai, Yoshinori Ichishi, Yuichi Kajino
  • Patent number: 6550686
    Abstract: In a vehicle air conditioning system, a non-contact temperature sensor having plural temperature detecting elements is disposed to detect a predetermined region within a passenger compartment. The plural temperature detecting elements are constructed by plural first elements each of which has a smaller temperature detecting area in the predetermined region, and plural second elements each of which has a larger temperature detecting area in the predetermined region. The non-contact temperature sensor detects an area, where a detail temperature-distribution information is necessary, using the first elements, and detects an area, where the detail temperature-distribution information is unnecessary, using the second elements.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: April 22, 2003
    Assignee: Denso Corporation
    Inventors: Takayoshi Kawai, Toshifumi Kamiya, Akira Ohga, Hiroshi Ando, Yuichi Kajino, Hiroyuki Tarumi, Katsuyoshi Nishii
  • Publication number: 20030051491
    Abstract: A vehicle air conditioner has a standby RAM having a map memorizing many regions of, for example, preset temperature, each of which is determined by environmental conditions such as the inside/outside air temperatures and the sunlight amount. The air conditioner automatically controls the air conditioning of the passenger compartment of the vehicle based on the information stored in the region of the map determined by the environmental conditions that is regarded as a control preset temperature used for calculating a target blowing temperature in a control flow repeating cyclically. When the preset temperatures read at the previous cycle and the current cycle are different from each other, the control preset temperature is regarded as the preset temperature which changes gradually from the previous one to the current one, whereby the temperature of air blown into the passenger compartment gradually changes.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 20, 2003
    Inventors: Takayoshi Kawai, Akira Ohga, Yuichi Kajino
  • Patent number: 6491578
    Abstract: In a vehicle air conditioner, each of cool air outlets is provided at an upper side of each seat at second and third seat lines from a most front seat so that cool air from an air conditioning unit is blown from the cool air outlets toward upper sides of the seats, respectively, and each of warm air outlets is provided at a lower side of each seat at the second and third seat lines so that warm air from the air conditioning unit is blown from the warm air outlets toward lower sides of the seats, respectively. In addition, each of suction ports is provided for each corresponding seat at the second and third seat lines so that air inside a passenger compartment is sucked from the suction ports to be returned to the air conditioning unit.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: December 10, 2002
    Assignee: Denso Corporation
    Inventors: Takeshi Yoshinori, Kouji Sakai, Shinji Aoki, Yuichi Kajino
  • Patent number: 6491577
    Abstract: A sitting position of a vehicle occupant in the longitudinal direction of a vehicle is detected, an outlet close to the sitting position of the occupant from plural outlets and is selected based on the detected sitting position, and air is blown out from the selected outlet toward the occupant's sitting position. Thus, since an outlet close to the occupant's sitting position is selected, it becomes easier for air to reach the vehicle occupant to sufficiently cool or warm the occupant with a small amount of blown out air.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: December 10, 2002
    Assignee: Denso Corporation
    Inventors: Takeshi Yoshinori, Shinji Aoki, Yuichi Kajino, Kouji Sakai
  • Patent number: 6488213
    Abstract: In a control system of a vehicle air conditioner, when a temperature difference between a previous target air temperature at the previous manual operation and a present target air temperature at the present manual operation is smaller than a predetermined value, that is, when it is estimated that a passenger's desired air amount is not set by the previous manual operation, a blower voltage control characteristic for controlling an air amount of a blower is corrected so that a set value at the previous manual operation is not affected to the present learning. Accordingly, it can prevent air-conditioning feeling from being deteriorated due to mis-learning.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: December 3, 2002
    Assignee: Denso Corporation
    Inventors: Akira Ohga, Yuichi Kajino, Takayoshi Kawai, Toshifumi Kamiya, Yoshinori Ichishi
  • Patent number: 6478369
    Abstract: A seat air duct includes a floor duct fixed to the floor surface of vehicle cabin and flexible ducts. The upper wall of the floor duct is partially formed by flexible slide walls. The flexible slide walls are formed in an accordion and stretch and contract to follow a front-back stroke of a front seat. The flexible ducts stretch and contract to follow a vertical stroke of the front seat. In this way, since the flexible slide walls and the flexible ducts are independently provided, the seat air-conditioning unit effectively follows the front-back and vertical strokes of the passenger seat, thereby improving a seat air-conditioning performance.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 12, 2002
    Assignee: Denso Corporation
    Inventors: Shinji Aoki, Takeshi Yoshinori, Yuichi Kajino, Kazutoshi Nishizawa
  • Patent number: 6397615
    Abstract: A vehicle air conditioner has a non-contact temperature sensor for detecting a surface temperature of a detection range of a passenger compartment. The detection range includes a first detection portion in which a surface temperature is changed to approximately correspond to an inside air temperature, a second detection portion in which a surface temperature is changed in accordance with an outside air temperature, and a third detection portion in which a surface temperature is changed in accordance with a sunlight amount entering the passenger compartment. In the vehicle air conditioner, a target temperature of air blown into the passenger compartment is calculated based on a set temperature and a surface temperature from the non-contact temperature sensor, while air-conditioning performance is improved.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: June 4, 2002
    Assignee: Denso Corporation
    Inventors: Takayoshi Kawai, Yuichi Kajino, Yoshinori Ichishi, Toshifumi Kamiya, Hikaru Sugi, Shigeki Harada, Nobukazu Kuribayashi, Tatsumi Kumada, Akira Yamaguchi, Hiroyuki Tomita
  • Patent number: 6390380
    Abstract: Temperatures in a Dr side air-conditioning zone and a Pa side air-conditioning zone are controlled highly independently of each other without temperature interference between each zone. A room internal air temperature sensor and a room external air temperature sensor are provided. Dr side and Pa side temperature setters separately set room setpoint temperatures (Tset(Dr), Tset(Pa)) in each zone. First and second target blow-out temperature calculating portions, which include neural network, input the room setpoint temperatures and the temperature data. Then it calculates Dr side and Pa side target blow-out temperatures (TAO(Dr), TAO(Pa)) relative to each air-conditioning zones by using a neural network. Air-mixing doors separately adjusts the temperatures of conditioned air blown out from Dr side air passage and Pa side air passage to be the first and second target blow-out temperatures. Here, the neural network has the learning function, which adjusts its output to be desired data (teacher signal).
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: May 21, 2002
    Assignee: Denso Corporation
    Inventors: Yoshinori Ichishi, Takayoshi Kawai, Yuji Ito, Katsuhiko Samukawa, Yuichi Kajino
  • Publication number: 20020053601
    Abstract: The air conditioner includes a surface temperature sensor for detecting a surface temperature of a clothes portion of a passenger. In the air conditioner, a thermal-feeling estimation value for the passenger is calculated based on the surface temperature of the clothes portion of the passenger, and air-conditioning operation of a passenger compartment is controlled based on the thermal-feeling estimation value. Accordingly, in the air conditioner, the thermal feeling can be always accurately estimated, and comfortable air-conditioning control can be performed using the thermal-feeling estimation value.
    Type: Application
    Filed: October 24, 2001
    Publication date: May 9, 2002
    Inventors: Toshifumi Kamiya, Takayoshi Kawai, Akira Ohga, Yuichi Kajino
  • Patent number: 6347987
    Abstract: A vehicle air conditioner includes an air conditioning unit where temperature adjustments of both right and left-seat side air-conditioning zones are independently performed. In the vehicle air conditioner, a swing range of right-seat side center louvers provided in a right center face air outlet is restricted from a front right-seat direction to a rear left-seat direction, and a swing range of left-seat side center louvers provided in a left center face air outlet is restricted from a front left-seat direction to a rear right-seat direction. Thus, right-left independent temperature control can be accurately performed in the vehicle air conditioner.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: February 19, 2002
    Assignee: Denso Corporation
    Inventors: Yoshinori Ichishi, Takayoshi Kawai, Katsuhiko Samukawa, Toshifumi Kamiya, Yuichi Kajino, Akira Ohga, Hikaru Sugi
  • Publication number: 20020019213
    Abstract: A sitting position of a vehicle occupant in the longitudinal direction of a vehicle is detected, an outlet close to the sitting position of the occupant from plural outlets and is selected based on the detected sitting position, and air is blown out from the selected outlet toward the occupant's sitting position. Thus, since an outlet close to the occupant's sitting position is selected, it becomes easier for air to reach the vehicle occupant to sufficiently cool or warm the occupant with a small amount of blown out air.
    Type: Application
    Filed: July 27, 2001
    Publication date: February 14, 2002
    Inventors: Takeshi Yoshinori, Shinji Aoki, Yuichi Kajino, Kouji Sakai