Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Other

Showa Denko K.k.

Kabushiki Kaisha Toyota Jidoshokki

Nagoya Screw Mfg., Co., Ltd.

Hayato Ikeda

Hisato Kawamura

Hiromi Michiyuki

Masanobu Yokoi

Hideo Mori

Naoya Yokomachi

Tomoji Tarutani

Noriyuki Shintoku

Satoshi Kitahama

Katsunori Kawai

Hiroshi Onomura

Satoshi Umemura

Hirofumi Sato

Yasunori Ueda

Masahiro Sawada

Toshiro Fujii

Takayuki Kato

Koichi Ito

Norikazu Deto

Keishi Nakagaki

Kazuaki Iwama

Mitsuhiro Hattori

Tomohiro Wakita

Toshihiro Kawai

Shoji Takemoto

Shinichi Ishihara

Masaaki Nishimoto

Kazuo Murakami

Seiji Katayama

Akira Nakamoto

Yuji Kaneshige

Muneharu Murase

Motonobu Kawakami

Tetsuya Takashima

Norihiko Nakamura

Kazuhiro Ohta

Kazuya Kimura

Toru Takeichi

Hitoshi Inukai

Satoru Kuramoto

Tetsuya Yamaguchi

Kazuhiro Tanikawa

Masaaki Taga

Hiromi Nagata

Masakazu Ohbayashi

Kenji Takenaka

Tatsuyuki Hoshino

Hiroyuki Gennami

Takahiro Sugioka

Masaya Nakamura

Takanori Okabe

Tetsuo Yoshida

Masato Takamatsu

Kazuhito Kawasumi

Naofumi Kimura

Yasuo Takahara

Fukuo Gomi

Shigeo Fukushima

Atsushi Fukaya

Masayuki Kurahashi

Kazuhiro Nomura

Tatsuya Nakai

Takashi Okamoto

Masafumi Kato

Isao Tsuzuki

Toshiyuki Nakajima

Junichi Toyama

Shinya Kawakami

Nobuhiro Ishizaka

Mitsuru Hasegawa

Toshiyuki Mizuno

Shinji Mizuno

Masaki Nomura

Michelle Alberda

Manabu Naoi

Masato Nakagawa

Hirofumi Satoh

Naoya Yakomachi

Takahisa Tokushige

Mitsuhiro Oiwa

Toshinari Mizutani

Hiroshi Kanayama

Chiaki Gouhara

Ryo Katoh

A swash plate ( ) included in a swash plate type compressor for compressing a refrigerant is made of an aluminum alloy as a base material. Sliding contact surfaces ( ) of the swash plate ( ) in sliding contact with shoes ( ) linking the swash plate ( ) to pistons ( ) are coated with a film of a solid lubricant containing at least one lubricating material selected from molybdenum disulfide, tungsten disulfide and graphite by a transfer method. Therefore, the performance of the film and the productivity thereof are improved.

Swash plate type compressor

In the present compressor, a retainer is prevented from being deformed without impairing the sealing performance of a metal gasket provided between a covering member for closing a compression chamber of a cylinder block assembly and a discharge valve forming plate. A discharge valve forming plate is provided between a valve plate having at least one discharge port through which a fluid compressed in a compression chamber of a cylinder block assembly is discharged into a discharge chamber of a housing and the cylinder block assembly. A retainer for restricting the magnitude of opening of a discharge valve is integrally formed in a metal gasket which is provided between the discharge valve forming plate and the housing. The housing is provided with a restricting section at a position corresponding to a proximal portion of a rising portion of the retainer for restricting the proximal portion of the top surface of a rising portion.

Compressor

A swash plate type compressor that provides long lasting high lubricating performance to the sliding contact surfaces of a swash plate and shoes. The surface of the swash plate or the shoes on which the swash plate comes in sliding contact with the shoes is provided with an alloy plating layer, in which tin is the main component, as a surface treating layer. A coating layer, in which molybdenum disulfide is the main component, is formed as a solid lubricant layer on the foregoing plating layer. Preferably, the swash plate is made of aluminum or an aluminum alloy, and its surface is provided with the plating layer and the coating layer. More preferably, the coating layer contains graphite.

A metallic base gasket coated with elastic membrane having an outer sealing portion for sealing an outer circumference of a refrigerant compressor and an inner sealing portion for sealing boundaries between high and low pressure regions within the compressor, the outer and inner sealing portions being formed in an elastically deformable ridge, and at least one section of the ridge of the inner sealing portion being trifurcatedly connected to a portion of the ridge of the outer sealing portion to have a geometrical arrangement in which apex lines of the connected three ridges are equiangularly spaced apart from one another with respect to the center of the trifurcated connection of the ridges. The gasket may have an extended flat or curved face portion at the trifurcatedly connected ridges to permit the apexes of the connected ridges lie in the extended flat or curved face portion.

Gasket for sealing a refrigerant compressor

A compressor includes a cylinder block and a housing connected to the ends of the cylinder block. A suction chamber and a discharge chamber are defined in the housing, respectively, and the chambers are divided by a bulkhead, or wall. A valve plate, which has a discharge port for connecting the cylinder bores with the discharge chamber, is positioned between the cylinder block and the housing. A discharge valve is provided for selectively opening and closing the discharge port. A gasket is positioned between the housing and the valve plate, and the gasket is held to the bulkhead. The gasket has a bulkhead seal portion, which is between the bulkhead and the valve plate for sealing between the discharge chamber and the suction chamber, and a protruding portion, which protrudes radially beyond the bulkhead, extending along and contacting the valve plate.

Compressor having a value plate and a gasket

The invention is related to a swash plate compressor in which the wear resistance and the lubricating ability of the surfaces of the swash plate which are in contact with the shoes can be enhanced and maintained for a long period of time. In the swash plate compressor, a soft surface coating,is formed on sliding surfaces of any of a swash plate or shoes and the coarseness at ten point mean roughness of the surface of the substrate is made to be 8 &mgr;mRz or less, and preferably 5 &mgr;mRz or less, and more preferably 3 &mgr;mRz or less. Even if the soft surface coating,is partially worn or exfoliated by a sliding load, since the temperature of the soft surface coating,is increased by frictional heat and the soft surface coating,is fluidized, the worn or exfoliated portions are repaired. The soft surface coating,is preferably composed of a coating layer containing molybdenum disulfide.

Swash plate compressor

A gasket having a surface thereof coated with an elastic membrane and adapted to be interposed, together with a valve plate and a discharge valve member, between a cylinder block and a housing of a refrigerant compressor under compression. The gasket includes an outer sealing portion for sealing an outer circumference of the compressor against an atmospheric environment therearound, and an inner sealing portion, connected to the outer sealing portion, for sealing between a high pressure region and a low pressure region within the compressor. Each of the outer and inner sealing portions includes in its entirety a deformable ridge which is shaped as a convexly curved projection with an apex line continuously extending along a length of the each outer and inner sealing portion. When the gasket is located in a proper position in the compressor, the apex lines of the ridges of the respective sealing portions are abutted to the front or rear housing of the compressor.

A compressor has an odd number of aligned pairs of cylinder bores. A double-headed piston is accommodated in each aligned pair of bores. The time at which gas is discharged from each cylinder bore is different from that of all of the other cylinder bores. The compressor has a pair of reducing devices, one reducing the pulsation amplitude of the gas discharged from the front cylinder bores and the other reducing the pulsation amplitude of the gas discharged from the rear cylinder bores. The reducing devices reduce the gas pulsation amplitudes of the front and rear cylinder bores at a substantially equal rate. Each reducing device includes a discharge chamber for receiving the gas discharged from the associated cylinder bores and a discharge passage connected to the discharge chamber. The discharge chambers of the reducing devices have equal volumes, and the discharge passages of the reducing devices have equal lengths and equal cross-sectional areas. This structure improves the vibration characteristics of the compressor and thus reduces noise.

Double-headed piston type compressor

A compressor is described having a pair of casings fastened together by a plurality of bolts. A piston is located for reciprocation within a cylinder bore formed in the casings. A cam plate is mounted on a rotary shaft supported by the casings to reciprocate the piston. The cam plate is held by the casings between a pair of thrust bearings. The casings include adjoining surfaces fitted to each other and a member sandwiched between the adjoining surfaces of the casings for absorbing dimensional tolerances of the casings, cam plate and thrust bearings according to the deformation of the member.

Housing construction for reciprocating piston type compressor

A compressor includes front and rear cylinder blocks, a drive shaft rotatably supported by the cylinder blocks, a swash plate mounted on the drive shaft, a plurality of cylinder bores defined in the cylinder blocks and located around the drive shaft, and a plurality of pistons respectively disposed in the cylinder bores. The pistons reciprocate by converting rotation of the drive shaft with the swash plate. A plurality of compression chambers are defined in the cylinder bores for compressing the gas supplied to the cylinder bores in accordance with the reciprocating movement of the pistons. Each compression chamber has dead volume defined by a space having a predetermined volume when the associated piston is at top dead center in each cylinder bore. A reference capacity is defined by the capacity when the piston is at a bottom dead center of the cylinder bore that has the smallest dead volume. The largest dead volume is greater than the minimum dead volume by approximately four percent of the reference capacity.

Multiple piston swash plate type of compressor including different dead

An improvement of a piston type compressor is disclosed. The compressor has a cylinder block that includes a plurality of cylinder bores and a plurality of suction passages. Each of the suction passages extends through the cylinder block to connect a crank chamber with a suction chamber. The suction chamber is connected with the cylinder bores via a plurality of suction ports located in association with the cylinder bores. Each cylinder bore accommodating a piston that moves therein to circulate gas between the compressor and an external gas circuit. The gas introduced into the crank chamber from the external gas circuit is supplied to the suction chamber through each suction passage and is supplied from the suction chamber to each cylinder bore through an associated suction port. The suction passages are smaller in number than the cylinder bores. The suction ports are disposed in the vicinity of an opening of the suction passages.

Piston type compressor

An improved compressor that is designed to minimize shock and vibration during start-up includes a plurality of pistons, each of which is positioned for movement within a cylinder in order to compress a gas, and conventional motive structure for driving the pistons. Advantageously, the compressor includes a sensor for sensing, from a condition that exists within the compressor, when the compressor is in a start-up phase. The sensor is designed to be operative regardless of the position of the pistons during start-up. Pressure relief structure, responsive to said sensor, is provided for relieving pressure in at least one of the cylinders when the sensor indicates that the compressor is in the start-up phase. This minimizes shock and vibration during the start-up.

Piston-type compressor with improved shock absorption during start up

A piston for a compressor. The piston has a lubricating coating that slidably contacts with an inner surface of the cylinder bore. The layer is formed on the surface of the piston. The layer is formed by transferring a liquid material to the surface of the piston using printing techniques such as screen printing and roller coating.

Pistons for compressors and method and apparatus for coating the pistons

Growing community of inventors

Kariya, Japan

Hayato Ikeda