Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Nippondenso Co., Ltd.

Other

Kabushiki Kaisha Toshiba Jidoshokki

Kabushiki Kaisha Tiyoda Jidoshokki

Shinya Yamamoto

Yusuke Yamazaki

Takahiro Suzuki

Kei Nishii

Kazunari Honda

Masaki Ota

Tetsuhiko Fukanuma

Hiroyuki Nakaima

Masahiro Kawaguchi

Yasushi Watanabe

Makoto Yoshikawa

Kengo Sakakibara

Yuya Izawa

Hideharu Yamashita

Mamoru Kuwahara

Masahiro Inagaki

Shigeki Iwanami

Nobuaki Hoshino

Satoru Kuramoto

Yoshiyuki Nakane

Kunifumi Goto

Shigeru Hisanaga

Hiromichi Ogawa

Masao Iguchi

Tetsuo Yoshida

Kiyohiro Yamada

Yuichi Tsumagari

Ryosuke Koshizaka

Kazuo Murakami

Izuru Shimizu

Takao Mishina

Osamu Uchiyama

Toshiro Fujii

Naoya Yokomachi

Tatsushi Mori

Akinobu Kanai

Yoshinori Inoue

Tsuyoshi Takemoto

Tetsuya Yamaguchi

Takashi Miyakawa

Kimihiro Ishikawa

Daisuke Sato

Mika Fujiwara

Takashi Ban

Hiroyuki Kobayashi

Satoshi Umemura

Hiroyuki Hayashi

Takayuki Imai

Kazuhiro Kuroki

Hisao Kobayashi

Kazuo Kobayashi

Shinichi Sato

Yasushi Suzuki

Masahiko Okada

Yasuhiro Oki

Eiichi Nagasaku

Yukio Ogawa

Susumu Tarao

Keishi Nakagaki

Yoshitami Kondo

Yuuji Yamamoto

Yukio Yamaguchi

Takamitsu Mukai

Yasuhiro Miura

Shohei Fujiwara

Kenichi Morita

Shinichi Watanabe

Katsumi Yamashita

Masaaki Enya

Tomomi Ohno

Junichi Iio

Yukihisa Tsuchimoto

Norio Suzuki

Shinsuke Aso

Nobuhiro Ishizaka

Masahiro Ida

Yoshinari Suzuki

Tetsuhiko Hukanuma

Kentaro Ishihara

Hiroyuki Ishigure

Satoshi Egashira

Yasunaka Hanaoka

A piston compressor includes a housing including a cylinder block having cylinder bores. The housing has a discharge chamber, a swash plate chamber, and an axial hole. The piston compressor includes a drive shaft, a fixed swash plate, a piston, a discharge valve, a rotating body, and a control valve. The rotating body has a second communication passage that communicates with first communication passages intermittently by rotation of the drive shaft. A flow rate of refrigerant gas discharged from the compression chambers into the discharge chamber decreases when a communication angle around the axis becomes large per a rotation of the drive shaft depending on a position of the rotating body in the direction of the axis. The piston compressor includes a suction throttle that decreases the flow rate of refrigerant gas in the compression chamber when the communication angle becomes large based on the control pressure.

Piston compressor including a suction throttle

A piston compressor includes a housing, a drive shaft, a fixed swash plate, a plurality of pistons, a movable body, and a control valve. The housing includes a cylinder block having a plurality of cylinder bores and a plurality of first communication passages. The movable body has a second communication passage that intermittently communicates with each of the first communication passages by rotation of the drive shaft. A flow rate of refrigerant discharged from a compression chamber into a discharge chamber changes according to a position of the movable body in a direction of an axis of the drive shaft. The control valve is configured to control a control pressure. The first communication passages are connected to the second communication passage by the movable body and disconnected from the second communication passage by the drive shaft.

Piston compressor

A double-headed piston type swash plate compressor includes a rotation shaft, a housing, a swash plate, two cylinder bores, a double-headed piston, and two shoes. The double-headed piston includes two shoe holders, a neck, two heads, and two coupling portions. Each of the coupling portions includes an outer portion and an inner portion. A direction orthogonal to both of an opposing direction of the inner portion and the outer portion and the axial direction of the double-headed piston is referred to as a widthwise direction. The neck is larger in the widthwise direction than in the opposing direction so that the neck is deformable in the opposing direction. Each of the two coupling portions has a width that is less than or equal to a width of the neck. The inner portion includes a narrow portion. The narrow portion is at least partially located closer to the head than the shoe holder in the inner portion. The two coupling portions are deformable in the widthwise direction when the swash plate applies load to the double-headed piston.

Double-headed piston type swash plate compressor

A double-headed piston type swash plate compressor includes a rotation shaft, a housing, a swash plate, two cylinder bores, a double-headed piston, and two shoes. The double-headed piston includes two shoe holders, a neck, two heads, and two coupling portions. Each of the coupling portions includes an outer portion and an inner portion. A direction orthogonal to both of an opposing direction of the inner portion and the outer portion and the axial direction of the double-headed piston is referred to as a widthwise direction. The inner portion includes a narrow portion and a wide portion. The wide portion projects out of the narrow portion in the widthwise direction and has a larger width than the narrow portion. An outer surface of the wide portion is slidable on a wall surface of the corresponding cylinder bore when the double-headed piston reciprocates in the cylinder bores.

In a variable displacement type swash plate compressor, a connecting mechanism that connects a movable body and a swash plate includes a first arm having a first guide surface and a second arm having a second guide surface. The first and second arms extend from the movable body toward the swash plate and disposed on opposite sides of an imaginary plane that is defined to extend passing through a top dead center portion and an axis of rotation. The first arm and the second arm have a first opening and a second opening, respectively, that are open in a direction opposite to a direction in which a link pin moves on the first guide surface and the second guide surface with an increase of the inclination angle of the swash plate.

Variable displacement type swash plate compressor

A compressor includes a swash plate rotated with a drive shaft in a swash plate chamber, a link mechanism that changes an inclination angle of the swash plate, an actuator rotated integrally with the drive shaft, and an actuator control mechanism. The actuator includes a partitioning body fitted to the drive shaft in the swash plate chamber, a movable body that is coupled to the swash plate and moved relative to the partitioning body along the axis of the drive shaft, and a control pressure chamber, the pressure of which moves the movable body. The control mechanism changes the pressure of the control pressure chamber to move the movable body. The swash plate includes a fulcrum point, coupled to the link mechanism, and an action point, coupled to the movable body. The fulcrum point and the action point are located at opposite sides of the drive shaft.

Variable displacement swash plate compressor having a fulcrum and an action point located on opposite sides of a drive shaft

A swash plate type variable displacement compressor includes a housing in which a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore are formed, a drive shaft, a swash plate, an actuator, and a control mechanism that controls the actuator. A pressure regulation chamber is formed in the housing. The actuator includes a control pressure chamber. The control mechanism includes a control passage that connects together the discharge chamber, the pressure regulation chamber, and the control pressure chamber, and a control valve that, by adjusting the degree of opening of the control passage, changes the pressure in the control pressure chamber to allow the movable body to move. Refrigerant in the discharge chamber flows into the control pressure chamber via the pressure regulation chamber. The pressure regulation chamber functions as a muffler that reduces the pulsation of the refrigerant.

Swash plate type variable displacement compressor

An actuator of a compressor includes a partitioning body, which is rotatable integrally with a drive shaft and loosely fitted to the drive shaft in the swash plate chamber, a movable body, which is coupled to a swash plate and movable relative to the partitioning body along the axis of the drive shaft, and a control pressure chamber, the pressure of which moves the movable body. A control mechanism changes the pressure of the control pressure chamber to move the movable body. A link mechanism shifts a top dead center of a first head of a piston over a longer distance than a top dead center of a second head of the piston when the inclination angle of the swash plate changes. The actuator is located at the same side as the first cylinder bore, which accommodates the first head, as viewed from the swash plate.

Variable displacement swash plate compressor

A swash plate type variable displacement compressor includes a housing having therein a suction chamber, a discharge chamber a swash plate chamber and a cylinder bore. The compressor further includes a drive shaft, a swash plate and a link mechanism provided between the drive shaft and the swash plate. The compressor further includes a piston, a conversion mechanism, an actuator and a control mechanism. The actuator includes a partitioning member and a moving member, and a pressure control chamber formed therebetween. A support member is fitted on the drive shaft, and the contact of the support member with the moving member determines maximum inclination angle of the swash plate. A thrust bearing supports a thrust force. The support member includes a cylindrical portion that projects beyond the one end of the drive shaft. The position of the cylindrical portion is adjustable in the direction of the drive shaft.

A variable displacement swash-plate compressor includes an actuator that changes the inclination angle of a swash plate. The actuator includes a movable body that moves along a drive shaft axis. The movable body includes an acting portion that pushes the swash plate. The swash plate includes a receiving portion that contacts and is pushed by the acting portion. The acting portion and the receiving portion contact each other at an acting position. A bottom dead center associated part for positioning the piston at a bottom dead center is defined on the swash plate. When the drive shaft and the acting position are viewed from a direction that is perpendicular to a top dead center plane containing the top dead center associated part and the drive shaft axis, the acting position is defined at a position overlapping with the drive shaft regardless of the inclination angle.

Variable displacement swash-plate compressor

A variable displacement swash plate type compressor includes a rotary shaft, a swash plate, and an actuator, which changes the inclination angle of the swash plate. The actuator includes a partition body and a movable body, which moves in a direction along the rotational axis of the rotary shaft. The movable body includes a guide surface, which changes the inclination angle of the swash plate, and a sliding portion, which slides on the rotary shaft or on the partition body. When viewed from a direction that is perpendicular to the direction in which the rotational axis of the rotary shaft extends and perpendicular to a first direction, the guide surface is configured such that a perpendicular line or a normal line to the guide surface intersects with the rotational axis of the rotary shaft in a zone surrounded by the sliding portion.

A variable displacement swash compressor includes a housing, a drive shaft, a swash plate, a link mechanism, pistons, a conversion mechanism, an actuator, and a control mechanism. The housing includes a suction chamber, a discharge chamber, a swash plate chamber, and cylinder bores. The control mechanism controls the actuator. The actuator includes a partitioning body, a movable body, and a control pressure chamber. At least one of the suction chamber and the swash plate chamber is a low pressure chamber. The control mechanism includes a control passage, which connects the control pressure chamber, the low pressure chamber, and the discharge chamber, and a control valve, which adjusts the open degree of the control passage. The control passage is partially formed in the drive shaft. The movable body increases the inclination angle of the swash plate when the pressure of the control pressure chamber increases.

A swash plate type variable displacement compressor includes a housing having therein a suction chamber, a discharge chamber, a swash plate chamber and a cylinder bore. The compressor further includes a drive shaft and a swash plate that is mounted on the drive shaft for rotation therewith. The compressor further includes a link mechanism, a piston, a conversion mechanism, an actuator and a control mechanism. The actuator includes a partitioning body, a moving body and a pressure control chamber formed between the partitioning body and the moving body into which a refrigerant is introduced from the discharge chamber for moving the moving body. A connecting member and a connecting unit are disposed on radially opposite side of the drive shaft. The compressor further has an urging member that urges the moving body that reduces the inclination angle of the swash plate.

A variable displacement swash compressor includes a housing, a drive shaft, a swash plate, a link mechanism, a piston, a conversion mechanism, an actuator, and a control mechanism. The swash plate is rotatable together with the drive shaft in a swash plate chamber. The conversion mechanism reciprocates the piston in a cylinder bore. The actuator is operative to change the inclination angle of the swash plate. The actuator is rotatable integrally with the drive shaft. The actuator includes a partitioning body, a movable body, and a control pressure chamber. The control mechanism changes the pressure of the control pressure chamber to move the movable body. The movable body and the link mechanism are located at opposite sides of the swash plate.

In a compressor of the present invention, a first acting portion and a second acting portion are formed at a rear end of a first cylinder portion of a movable body. The first and the second acting portions are formed by stepping across a top dead center surface, and are plane-symmetrical with respect to the top dead center surface. Further, an affected portion is formed on a front surface of a swash plate. The first and the second acting portions and the affected portion are located eccentrically to a top dead center position corresponding portion side from a drive shaft axis.

Variable displacement swash plate type compressor

Growing community of inventors

Kariya, Japan

Shinya Yamamoto