Kabushiki Kaisha Toyota Jidoshokki

Denso Corporation

Yuya Hattori

Takumi Maeda

Takuro Yamashita

Shinji Koike

Shiori Yamamoto

Kunihisa Matsuda

Hiroki Nagano

Tatsushi Mori

Takayuki Ota

Yasuhiro Kondoh

Etsuko Hori

Keita Jinno

Tatsunori Tomota

Katsushi Asami

Kosaku Tozawa

Ryou Masuda

Daisuke Kaji

Ken Namiki

Kazuki Shibata

Tomohiko Sugiyama

Atsuhiro Ishida

Yu Nozawa

Hideyuki Suzuki

Masayuki Yamamoto

Takafumi Konishi

Kimihiro Fukawa

Ami Fujiwara

Kenji Kakimoto

A motor-driven scroll type compressor that includes: a housing; a rotary shaft; an electric motor; and a compression part including a fixed scroll and an orbiting scroll. The housing includes a separation wall separating a back pressure chamber from a motor chamber. The separation wall includes a bearing and a seal member having an inner circumference seal portion and an outer circumference seal portion. The seal member seals the back pressure chamber and the motor chamber. An end of the inner circumference seal portion is provided closer to the bearing than an end of the outer circumference seal portion is. The separation wall includes a holding portion being in contact with the end of the outer circumference seal portion to restrict movement of the seal member toward the bearing. The end of the inner circumference seal portion is provided closer to the bearing than the holding portion is.

Motor-driven scroll electric compressor

A scroll electric compressor includes a housing, a rotary shaft, an electric motor, a fixed scroll, an orbiting scroll, a compression chamber, a discharge chamber, and an oil storage chamber. The housing has a discharge housing including an end wall, a first peripheral wall, a stepped portion, and a second peripheral wall. The fixed scroll has a flange in contact with the second peripheral wall. The stepped portion, the second peripheral wall, the flange, the outer peripheral wall cooperate to define an annular space around the fixed scroll. The annular space is in communication with the discharge chamber or the oil storage chamber.

Scroll electric compressor

A fixed outer circumferential wall of a fixed scroll, a movable scroll, and a plate define a suction pressure space configured such that fluid flows from a suction chamber into the suction pressure space. The movable scroll and an opposed wall define a first back-pressure space. The plate and a back-pressure-chamber-defining recess of the opposed wall define a second back-pressure space. A back-pressure supplying groove of the opposed wall is configured to connect the first back-pressure space to the second back-pressure space, thereby supplying the fluid from the first back-pressure space to the second back-pressure space. A discharge hole of the plate is configured to connect the second back-pressure space to the suction pressure space, thereby discharging the fluid from the second back-pressure space to the suction pressure space. At least part of the discharge hole is overlapped with the back-pressure supplying groove in an axial direction.

Scroll compressor

A scroll compressor includes a housing, a rotary shaft rotatably supported by the housing, a fixed scroll accommodated in the housing and fixed to the housing, an orbiting scroll that orbits as the rotary shaft rotates, a compression chamber defined between the fixed scroll and the orbiting scroll, a discharge chamber, and an oil passage. A refrigerant taken in from the outside is compressed in the compression chamber. The refrigerant compressed in the compression chamber is discharged into the discharge chamber. An outer peripheral space connected to the compression chamber is defined between the outer peripheral surface of the fixed scroll and the inner peripheral surface of the housing. Oil separated from the refrigerant discharged into the discharge chamber is guided to the outer peripheral space through the oil passage.

A scroll compressor includes a fixed scroll and an orbiting scroll. The orbiting scroll includes an orbiting volute wall. The orbiting volute wall is shaped to form an involute and to have a thickness. The orbiting volute wall includes a thin section in which the thickness is less than those in adjacent sections. The thin section includes a region corresponding to an involute angle that is obtained by subtracting 360&#xb0; from a maximum of the involute angle.

Scroll compressor with a thin section in the orbiting volute wall

An electric compressor includes a housing including a compression part housing, a shaft support housing, and a motor housing fastened by a plurality of fastening members. A peripheral wall has a plurality of thick-walled portions that protrudes inwardly in a radial direction and through which their associated fastening members are inserted. The fixed scroll base plate has a plurality of protruded portions each protruding outwardly in the radial direction and disposed between the thick-walled portions in a circumferential direction. The fixed scroll base plate has a plurality of pillar portions each extending from the protruded portions toward the shaft support housing in the axial direction and spaced from each other in the circumferential direction. The elastic plate is held at a plurality of spots by the plurality of pillar portions and the shaft support housing.

Electric compressor

From each of in-vehicle units in vehicles, a travel behavior data indicating a travel behavior of the vehicle is received and recorded in a travel history database. The travel behavior data of the vehicles are read from the travel history database; an avoidance action arising in each of the vehicles is detected based on the read travel behavior data. From the detected avoidance actions of the vehicles, a related avoidance action group being avoidance actions arising due to an identical object at different positions at different points of times in different target vehicles is extracted based on an occurrence position and an occurrence point of time of each detected avoidance action. Information on position change of the identical object as a cause of the extracted related avoidance action group is recorded as an alert target data.

Alert output apparatus

An electric compressor includes a housing, a drive shaft, a motor, a fixed scroll, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor. The balance weight extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction of the drive shaft. The balance weight is located away from the rotor by a predetermined distance in the axial direction of the drive shaft.

A scroll compressor includes: a housing; a rotary shaft; a fixed scroll including a fixed base plate, a fixed spiral wall, and an outer peripheral wall; an orbiting scroll including an orbiting base plate and an orbiting spiral wall; a compression chamber; a suction port; a suction chamber; a discharge chamber; an oil storage chamber; and an oil supply hole. The fixed scroll includes a groove disposed at the same position as the oil supply hole or on an outer side with respect to the oil supply hole in a radial direction of the rotary shaft. At least part of the groove is configured to be closed by the orbiting base plate according to a revolution of the orbiting scroll. The oil supply hole and the groove form part of an oil supply passage that supplies oil in the oil storage chamber to the suction chamber.

Scroll compressor including a fixed scroll having an oil supply hole and a groove disposed at a position corresponding to the oil supply hole or on an outer side of the oil supply hole

An electric compressor includes a housing, a drive shaft, a motor, a movable scroll, and a fixed block. The fixed block is fixed to the housing and disposed between the motor and the movable scroll. The motor includes a stator and a rotor. The rotor has an introduction passage that is formed through the rotor in an axial direction of the drive shaft. The drive shaft includes a balance weight that is disposed between the fixed block and the motor and extends to a position where the balance weight covers at least a part of the introduction passage in a radial direction of the drive shaft in a view in the axial direction. The introduction passage includes a first passage located outward of the balance weight in a circumferential direction of the rotor and the drive shaft, and a second passage facing the balance weight in the axial direction.

A scroll type compressor includes a housing, a fixed scroll cooperating with the housing to define a discharge chamber, a movable scroll cooperating with the fixed scroll to define a compression chamber, and a shaft support member cooperating with the movable scroll to define a back pressure chamber. Fluid in the compression chamber is supplied to the back pressure chamber. The back pressure chamber and the discharge chamber communicate with each chamber through a relief passage. A check valve is disposed in the relief passage, and the check valve allows the fluid to flow from the back pressure chamber to the discharge chamber, when back pressure of the back pressure chamber is higher than discharge pressure of the discharge chamber.

Scroll type compressor

A scroll compressor is provided. An orbiting angle of the orbiting scroll when the compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is completed is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with the arcuate portion of the fixed spiral wall before compression is completed is referred to as a distal end contact initiation angle. The formation point distance reaches a minimum value at least at one of a first orbiting angle or a second orbiting angle.

A compressor includes a housing, a stationary block, a drive shaft, a motor mechanism, a stationary scroll, and a movable scroll. The stationary block is fixed to the housing and is arranged between the motor mechanism and the movable scroll. The motor mechanism includes a stator and a rotor. The drive shaft is provided with a balance weight. The balance weight extends in the radial direction of the drive shaft and is arranged between the stationary block and the stator. The stator includes a stator core and a coil end. The balance weight covers a part of the coil end in the radial direction and the axial direction of the drive shaft.

Motor-driven compressor

A scroll compressor includes a housing, a rotary shaft, a movable scroll, an eccentric shaft, an opposed wall, a looped elastic plate, a looped support portion, an annular protrusion, a back pressure chamber, and a back pressure supplying groove. The distance in the radial direction of the rotary shaft from the rotation axis of the rotary shaft to then outer end of the back pressure supplying groove in the radial direction of the rotary shaft is shorter than or equal to the distance obtained by subtracting the distance in the radial direction of the rotary shaft between the rotation axis of the rotary shaft and the axis of the eccentric shaft from the distance in the radial direction of the rotary shaft from the axis of the eccentric shaft to the part of the protrusion that contacts the elastic plate.

A scroll compressor includes a fixed scroll and an orbiting scroll. An orbiting angle of the orbiting scroll when a compression chamber is formed and compression of fluid is initiated is referred to as an orbiting initiation angle. An orbiting angle of the orbiting scroll when the compression of the fluid is terminated is referred to as an orbiting termination angle. An orbiting angle of the orbiting scroll when an end of the orbiting spiral wall initiates contact with an arcuate portion of the fixed spiral wall is referred to as a distal end contact initiation angle. The formation point distance is a peak in at least one of orbiting angles obtained by subtracting integer multiples of 360&#xb0; from an orbiting angle in a range from the distal end contact initiation angle to the orbiting termination angle.

Growing community of inventors

Aichi-ken, Japan

Yuya Hattori