公开(公告)号：US09759593B2

公开(公告)日：2017-09-12

申请号：US14730525

申请日：2015-06-04

Applicant: DENSO CORPORATION

Inventor： Yasushi Goka ,  Takashi Ooga ,  Akiyuki Sudou ,  Junzo Yamaguchi

IPC: G01F5/00 ,  G01F15/00 ,  G01N33/00 ,  G01F1/684

CPC classification number: G01F5/00 ,  G01F1/6842 ,  G01F15/00 ,  G01N27/223 ,  G01N33/00

Abstract: An airflow-rate detecting device capable of detecting humidity has a housing, a flow rate sensor, a humidity sensor, a humidity sensor case, and a dust separating portion. The housing therein defines a bypass passage into which a part of air flowing in a duct flows. The flow rate sensor is disposed in the bypass passage. The humidity sensor detects a humidity of air flowing in the duct at an outside of the housing. The humidity sensor case houses the humidity sensor and therein defines an interior space into which a part of air flowing in the duct flows as a target air of which humidity is detected by the humidity sensor. The dust separating portion removes dust from the target air before the target air flows into the interior space.

公开(公告)号：US11286893B2

公开(公告)日：2022-03-29

申请号：US16424567

申请日：2019-05-29

Applicant: DENSO CORPORATION

Inventor： Akitoshi Mizutani ,  Yasushi Goka

IPC: G01N27/12 ,  F02M35/10 ,  G01F1/684 ,  G01F1/00 ,  G01F1/68

Abstract: A physical quantity measuring device is configured to measure a physical quantity of a fluid. The physical quantity measuring device includes: at least two humidity detection parts configured to output a humidity signal corresponding to a humidity of the fluid; and an abnormality determination part configured to determine that an abnormality has occurred in the humidity detection parts in response to that a difference between the humidity signals obtained from the two humidity detection parts exceeds an abnormality determination threshold.

公开(公告)号：US11221246B2

公开(公告)日：2022-01-11

申请号：US17005364

申请日：2020-08-28

Applicant: DENSO CORPORATION

Inventor： Takuma Tsuchiya ,  Kengo Itou ,  Noboru Kitahara ,  Yasushi Goka

IPC: G01F1/688 ,  G01F1/696 ,  F02M35/10

Abstract: A physical quantity sensing device is installed to a circuit board and is configured to output a signal, which corresponds to a physical quantity of air flowing through a physical quantity measurement passage. A physical quantity measurement passage inlet, which is communicated with the physical quantity measurement passage, includes a first inner surface and a second inner surface. A second distance, which is measured from the physical quantity sensing device to the second inner surface in a plate thickness direction of the circuit board, is larger than a first distance, which is measured from the circuit board to the first inner surface in the plate thickness direction of the circuit board.