摘要:
In a swash plate type compressor, refrigerant in a discharge pressure region is introduced into a crank chamber through a supply passage while the refrigerant in the crank chamber is drawn out to a suction pressure region through a bleed passage for controlling pressure in the crank chamber, whereby inclination angle of a swash plate is changed. A heat-generating sliding portion is provided in the crank chamber. The supply passage includes a communication port that communicates with the crank chamber and a first throttle portion for throttling the refrigerant. At least parts of the supply passage and the bleed passage are formed in a drive shaft. A part of the bleed passage formed in the drive shaft is located between a part of the supply passage formed in the drive shaft and an outer peripheral surface of the drive shaft.
摘要:
In a swash plate type compressor, refrigerant in a discharge pressure region is introduced into a crank chamber through a supply passage while the refrigerant in the crank chamber is drawn out to a suction pressure region through a bleed passage for controlling pressure in the crank chamber, whereby inclination angle of a swash plate is changed. A heat-generating sliding portion is provided in the crank chamber. The supply passage includes a communication port that communicates with the crank chamber and a first throttle portion for throttling the refrigerant. At least parts of the supply passage and the bleed passage are formed in a drive shaft. A part of the bleed passage formed in the drive shaft is located between a part of the supply passage formed in the drive shaft and an outer peripheral surface of the drive shaft.
摘要:
A compressor includes a housing, a rotary shaft, a bearing, a seal, a shaft seal chamber, a first passage, a second passage and the fluid passage. The first passage connects a crank chamber to the shaft seal chamber The second passage is formed between a lug plate fixed to the rotary shaft and the housing so as to connect the bearing to the crank chamber. The partition is provided in the shaft seal chamber for dividing the shaft seal chamber into a seal-side chamber and a bearing-side chamber. The first passage is in communication with the seal-side chamber of the shaft seal chamber. The fluid passage for accumulating the lubricating oil and for communicating the first passage and the second passage is formed radially inward of an inner circumferential surface of the shaft seal chamber.
摘要:
A variable displacement compressor for forming a refrigerant circuit with an external refrigerant circuit includes a housing, a drive shaft, a swash plate, a shaft seal member, a supply passage, a control valve and a gas passage. The housing has a suction chamber, a crank chamber, a discharge chamber and a shaft seal chamber formed therein. The discharge chamber is in communication with the crank chamber through the supply passage. The supply passage has the shaft seal chamber. The discharge chamber is in communication with the external refrigerant circuit through the gas passage. The supply passage is formed differently from the gas passage. A part of the supply passage is located adjacent to the suction chamber and nearer to the suction chamber than the discharge chamber.
摘要:
Lubricating oil feeding mechanism has an oil-collecting recess and an oil-supplying groove formed on the wall of the housing. The oil-collecting recess connects a gap defined between the through hole and the bolt to the oil-supplying groove, the gap being in the upper position with respect to a sliding part to be lubricated in the housing in an operating state of the mounted compressor. The oil-collecting recess extends from the gap in the circumferential direction of the drive shaft, and the oil-supplying groove upwardly extends toward the oil-collecting recess. The oil-supplying groove is arranged so as to guide lubricating oil to the sliding part. Lubricating oil adhered on the bolt can be collected to the oil-collecting recess via the gap, and is fed to the sliding part through the oil-supplying groove. Therefore, a large amount of lubricating oil in a swash plate chamber can be utilized to lubricate the sliding part.
摘要:
A refrigerant compressor includes a compression mechanism, a discharge passage, and an oil separator. The compression mechanism compresses a refrigerant gas containing a lubricant oil. The refrigerant gas that has been compressed by the compression mechanism flows through the discharge passage. The oil separator is arranged in the discharge passage and separates the lubricant oil from the refrigerant gas flowing in the discharge passage. The oil separator has a rotator that causes the refrigerant gas to flow around the axis of the rotator and a circumferential wall that encompasses the rotator and extends along the axis of the rotator. The rotator and the circumferential wall define a separation zone in between. The lubricant oil is separated from the refrigerant gas by the flow of the refrigerant gas around the rotator in the separation zone. The circumferential wall has an oil outlet that allows the separated lubricant oil to flow to the exterior of the oil separator. The oil separator has an inlet port that allows the refrigerant gas to flow into the separation zone and an outlet port that allows the refrigerant gas to flow out of the separation zone. The rotator is arranged between the inlet port and the outlet port. The inlet port and the outlet port are arranged so that an inlet direction of the refrigerant gas flowing through the inlet port is substantially parallel with an outlet direction of the refrigerant gas flowing through the outlet port.
摘要:
A power transmission device of a compressor includes a rotary shaft, a pulley, a hub, a power shutoff member, a spacer and a cylinder. The power shutoff member shuts off excessive torque transmission between the pulley and the rotary shaft of the compressor. The spacer is disposed on the rotary shaft. The cylinder is disposed between the power shutoff member and the rotary shaft. The cylinder has an external thread portion formed at the outer periphery thereof for engagement with an internal thread portion of the power shutoff member and an internal thread portion formed at the inner periphery thereof for engagement with an external thread portion of the rotary shaft. The cylinder has a contacting surface for contact with a seating surface of the spacer and a seating surface for contact with a contacting surface of the hub at the axial end portion of the hub.
摘要:
A piston compressor in which carbon dioxide is used as a refrigerant is provided. The compressor includes a cylinder block, reciprocating pistons, a valve plate, a housing member, and sealing members. The cylinder block has an end face and a plurality of cylinder bores. The pistons are housed in the individual cylinder bores. The valve plate has a plurality of discharge ports. The housing member is fixed to the end face of the cylinder block with the valve plate in between. The housing member has a partition wall. The housing member and the valve plate define a suction chamber and a discharge chamber. The discharge chamber is connected to the cylinder bores through the corresponding discharge ports. The suction chamber and the discharge chamber are partitioned by the partition wall. The sealing members each are interposed between the valve plate and the cylinder block, and between the valve plate and the housing. A value of a ratio of the thickness of the valve plate relative to a diameter of each cylinder bore is between 0.13 and 0.4, inclusive.
摘要:
A piston type compressor comprises a cylinder block having a plurality of cylinder bores, a plurality of pistons disposed in the respective cylinder bores for defining compression chambers in the respective cylinder bores, a housing for defining a suction-pressure region and a discharge-pressure region therein, a valve-port assembly provided between the cylinder block and the housing, and a seal member provided between the cylinder block and the housing. The seal member has a first seal portion for preventing the refrigerant from leaking out of the compressor and a second seal portion for preventing the refrigerant from leaking between adjacent refrigerant passages. Each of the first and second seal portions has a bead. The bead of the second seal portion has a height which is smaller than that of the first seal portion.
摘要:
Provided is a control valve of a vehicular refrigeration circuit, including: an air supply passage for communicating a discharge chamber and a crank chamber with each other; a second rod capable of changing a primary opening which is the degree of opening of the air supply passage; a first bellows which moves while causing a first load F1 due to a differential pressure ΔPd between a high discharge pressure PdH and a low discharge pressure PdL to operate the second rod such that the primary opening increases or decreases; a constant pressure valve for maintaining the low discharge pressure PdL in a high pressure chamber communicating with the discharge chamber at a constant correction pressure PdL0; an actuator capable of changing the correction pressure PdL0 to a predetermined control pressure PdLx due to energization control by a controller; and a second bellows which moves while causing a second load F2 opposing the first load F1 with the control pressure PdLx to adjust the primary opening.