Patents by Inventor Kengo Kazari

Kengo Kazari 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).

  • Publication number: 20210276398
    Abstract: A heat exchange system includes a heat exchanger, a radiator, a connecting member, a shutter, and a controller. The heat exchanger is configured to exchange heat between a heat medium circulating through a heat exchange cycle and an air introduced into an engine compartment. The radiator is configured to exchange heat between a cooling water and the air. The connecting member thermally connects between the heat exchanger and the radiator. The shutter is configured to selectively allow and prevent supply of air to the heat exchanger and the radiator. The controller is configured to determine whether a required heat absorption amount of the heat exchanger can be supplemented by a required heat dissipation amount of the radiator, and control the shutter to move in a closing direction upon determining that the required heat absorption amount can be supplemented by the required heat dissipation amount.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 9, 2021
    Inventors: Kengo KAZARI, Takahiro UNO
  • Publication number: 20190137152
    Abstract: The evaporator unit includes an ejector, a discharge-side evaporator, and a suction-side evaporator. The discharge-side evaporator includes discharge-side tubes and a discharge-side tank. The discharge-side tank defines a discharge-side distribution chamber therein which distributes refrigerant to the discharge-side tubes. A partition plate is disposed in the discharge-side distribution chamber and divides the discharge-side distribution chamber into an ejector-side distribution chamber and a tube-side distribution chamber. The partition plate includes a communication hole through which the ejector-side distribution chamber and the tube-side distribution chamber are in fluid communication with each other. The partition plate includes a first portion, a second portion, a third portion, a fourth portion, and a fifth portion. The communication hole has an open area that is larger in each of the first portion, the third portion and the fifth portion than in each of the second portion and the fourth portion.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Inventors: Goki AKIYOSHI, Kengo KAZARI, Eiichi TORIGOE
  • Patent number: 10168084
    Abstract: A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 1, 2019
    Assignee: DENSO CORPORATION
    Inventors: Aun Ota, Naohisa Ishizaka, Norimasa Baba, Shota Chatani, Masakazu Nagaya, Eiichi Torigoe, Kengo Kazari, Daisuke Haseba
  • Patent number: 9631841
    Abstract: A refrigerant evaporator includes four core portions. A part of the refrigerant passes through a first core portion and a fourth core portion. The other part of the refrigerant passes through a second core portion and a third core portion. An exchanging unit exchanges the positions where the refrigerant flows. A passage through which the second core portion communicates with the third core portion includes a throttle passage in the intermediate tank unit. The throttle passage and the end portion of the intermediate tank unit reverse the refrigerant flow toward a partitioning member. Since the distribution of a liquid-phase refrigerant is adjusted by the throttle passage, a concentration of the liquid-phase refrigerant on a position in the vicinity of an outlet of the third core portion is suppressed. Accordingly, the concentration of the liquid-phase refrigerant in the core portions located downstream of the refrigerant flow is suppressed.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: April 25, 2017
    Assignee: DENSO CORPORATION
    Inventors: Naohisa Ishizaka, Norimasa Baba, Ichio Kamei, Kengo Kazari, Shota Chatani
  • Publication number: 20160084548
    Abstract: A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.
    Type: Application
    Filed: May 9, 2014
    Publication date: March 24, 2016
    Inventors: Aun OTA, Naohisa ISHIZAKA, Norimasa BABA, Shota CHATANI, Masakazu NAGAYA, Eiichi TORIGOE, Kengo KAZARI, Daisuke HASEBA
  • Publication number: 20150027163
    Abstract: A refrigerant evaporator includes four core portions. A part of the refrigerant passes through a first core portion and a fourth core portion. The other part of the refrigerant passes through a second core portion and a third core portion. An exchanging unit exchanges the positions where the refrigerant flows. A passage through which the second core portion communicates with the third core portion includes a throttle passage in the intermediate tank unit. The throttle passage and the end portion of the intermediate tank unit reverse the refrigerant flow toward a partitioning member. Since the distribution of a liquid-phase refrigerant is adjusted by the throttle passage, a concentration of the liquid-phase refrigerant on a position in the vicinity of an outlet of the third core portion is suppressed. Accordingly, the concentration of the liquid-phase refrigerant in the core portions located downstream of the refrigerant flow is suppressed.
    Type: Application
    Filed: March 4, 2013
    Publication date: January 29, 2015
    Inventors: Naohisa Ishizaka, Norimasa Baba, Ichio Kamei, Kengo Kazari, Shota Chatani
  • Patent number: 7311138
    Abstract: A stacking-type, multi-flow, heat exchanger includes heat transfer tubes and fins, which are stacked alternately, an end plate disposed at an outermost position of the stacked heat transfer tubes and fins in a stacking direction, and inlet and outlet pipes connected to the end plate. The heat exchanger includes a pipe connection plate provided on the end plate, having a pipe insertion hole formed therethrough, into which at least one of the inlet and outlet pipes is inserted and which temporarily fixes an end portion of an inserted pipe in the pipe insertion hole. The pipe connection plate and the entire heat exchanger may be formed with a reduced size and weight, and the brazing quality between the plate and the pipe may be improved.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: December 25, 2007
    Assignee: Sanden Corporation
    Inventors: Kengo Kazari, Tomohiro Chiba, Takayuki Ohno
  • Patent number: 7140107
    Abstract: In a method for manufacturing a stacking-type, multi-flow, heat exchanger, heat transfer tubes and outer fins are stacked alternately, each heat transfer tube being formed by connecting a pair of tube plates and including an inner fin therebetween. The manufacturing method includes the steps of disposing the tube plates so as to oppose each other, inserting an inner-fin forming material between the tube plates, stacking the tube plates with respect to each other so as to nip or seize the inner-fin forming material between the tube plates, and cutting the inner-fin forming material and end portions of the tube plates simultaneously. By this method, the time for required manufacturing heat transfer tubes may be reduced significantly, and the productivity of the heat exchanger may be increased significantly. The positioning of inner fins may be achieved with a high degree of accuracy.
    Type: Grant
    Filed: May 24, 2005
    Date of Patent: November 28, 2006
    Assignee: Sanden Corporation
    Inventors: Takayuki Ohno, Tomohiro Chiba, Kengo Kazari
  • Publication number: 20050279485
    Abstract: A stacking-type, multi-flow, heat exchanger includes heat transfer tubes and outer fins stacked alternatively. Each heat transfer tube is formed by connecting a pair of tube plates, and each heat transfer tube includes a raised portion fixing the pair of tube plates to each other. The raised portions are formed by elongating or raising a portion of the pair of tube plates substantially simultaneously at a position at which a pair of holes, each of which is formed through one tube plate beforehand, are aligned. Complicated steps, such as inserting a raised portion into a hole, are not necessary. The number of types of tube plates also may be reduced. Moreover, the efficiency of assembling a heat transfer tube when fixing a pair of tube plates to each other may be significantly increased.
    Type: Application
    Filed: June 13, 2005
    Publication date: December 22, 2005
    Inventors: Tomohiro Chiba, Takayuki Ohno, Kengo Kazari
  • Publication number: 20050263274
    Abstract: In a method for manufacturing a stacking-type, multi-flow, heat exchanger, heat transfer tubes and outer fins are stacked alternately, each heat transfer tube being formed by connecting a pair of tube plates and including an inner fin therebetween. The manufacturing method includes the steps of disposing the tube plates so as to oppose each other, inserting an inner-fin forming material between the tube plates, stacking the tube plates with respect to each other so as to nip or seize the inner-fin forming material between the tube plates, and cutting the inner-fin forming material and end portions of the tube plates simultaneously. By this method, the time for required manufacturing heat transfer tubes may be reduced significantly, and the productivity of the heat exchanger may be increased significantly. The positioning of inner fins may be achieved with a high degree of accuracy.
    Type: Application
    Filed: May 24, 2005
    Publication date: December 1, 2005
    Inventors: Takayuki Ohno, Tomohiro Chiba, Kengo Kazari
  • Publication number: 20050263271
    Abstract: A stacking-type, multi-flow, heat exchanger includes heat transfer tubes and fins, which are stacked alternately, an end plate disposed at an outermost position of the stacked heat transfer tubes and fins in a stacking direction, and inlet and outlet pipes connected to the end plate. The heat exchanger includes a pipe connection plate provided on the end plate, having a pipe insertion hole formed therethrough, into which at least one of the inlet and outlet pipes is inserted and which temporarily fixes an end portion of an inserted pipe in the pipe insertion hole. The pipe connection plate and the entire heat exchanger may be formed with a reduced size and weight, and the brazing quality between the plate and the pipe may be improved.
    Type: Application
    Filed: May 24, 2005
    Publication date: December 1, 2005
    Inventors: Kengo Kazari, Tomohiro Chiba, Takayuki Ohno