Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jidoshokki

Kazuhiro Tanikawa

Naoya Yokomachi

Hayato Ikeda

Katsunori Kawai

Noriyuki Shintoku

Hisato Kawamura

Naofumi Kimura

Toshihiro Kawai

Shinichi Ishihara

Tetsuya Takashima

Toshiyuki Nakajima

In a discharge pulsation damping apparatus of a compressor according to this invention, an expansion muffler,and a resonance muffler,each having a predetermined capacity are defined inside cylinder blocks,and,through partitions,and,so that the resonance muffler,is situated at a position higher than the expansion muffler,in a gravitational direction (vertical direction). The expansion muffler,is connected to discharge chambers,and,and to an outlet,, and both mufflers,and,are communicated by a communication passage,formed in the partitions,and,. The capacity of the resonance muffler,, the open sectional area of the communication passage,and its passage length are set to values such that a pressure change capable of offsetting specific frequency components of the discharge pulsation inside the expansion muffler,can be generated inside the resonance muffler,. The lubricant condensed inside the resonance muffler,is fed back into the expansion muffler,through the communication passage

Discharge pulsation damping apparatus for compressor

A refrigerant compressor to be incorporated in a refrigerating circuit of a car air-conditioning system, having a suction side connected to the refrigerating circuit for receiving a refrigerant gas to be compressed, a discharge side for delivering the refrigerant gas after compression, and a bypass passageway arranged between the suction and discharge sides and constantly closed by a passageway-closing valve, and opened by the passageway-closing valve, only when the lowering of a suction pressure prevailing on the suction side to a pressure level below the atmospheric pressure level immediately after a start of the operation of the compressor at a high speed after a long non-operation of the car air-conditioning system.

Refrigerant compressor with an initial seizure prevention means

A swash plate type compressor having a compressor casing accommodating a swash plate operated compressing mechanism compressing a refrigerant gas supplied from a suction side of a refrigerant circulating circuit and discharging a compressed refrigerant gas into a discharge side of the circuit, and an internal lubricating system for lubricating movable elements of the swash plate operated compressing mechanism by using a lubricating oil reserved in a swash plate chamber and an oil sump provided in the bottom of the compressor casing, the compressor casing having a refrigerant and lubricant separating chamber for separating a lubricant component from a lubricant suspended refrigerant gas generated in the swash plate chamber by a high pressure blow-by refrigerant gas and a mist of the lubricant oil when the gas flows from the swash plate chamber toward the suction side of the refrigerant gas circulating circuit, and a refrigerant gas evacuation passageway extended from the refrigerant and lubricant separating chamber to the suction side of the refrigerant circulating circuit to permit an evacuation of the refrigerant gas after the lubricant separation.

Swash plate type compressor with internal refrigerant and lubricant

A piston for a compressor comprising a ring groove on the outer circumferential surface of the piston, and a discontinuous ring seal member with opposite split ends made of a plastic material and fitted in the ring groove. The ring member having an outer surface comprising a main sealing portion having an axially uniform shape and an outwardly circumferentially projecting flexible lip portion. Also, the inner surface of the ring member comprises an inner bearing portion able to come into contact with a first portion of a bottom surface of the ring groove such that the flexible lip portion of the outer surface is brought into contact with a cylinder wall of the cylinder bore and preflexed inwardly. An inner pressure receiving portion is formed adjacent to the inner bearing portion to receive pressure from the compression chamber, to further flex the flexible lip portion upon a compression stroke of the compressor and thereby allow the ring member to expand and the main sealing portion to come into contact with the cylinder wall of the cylinder bore.

Sealing arrangement for piston in compressor

Growing community of inventors

Kariya, Japan

Kazuhiro Tanikawa