摘要:
A compressor has therein a suction chamber into which refrigerant gas is introduced, a compression chamber in which the refrigerant gas in the suction chamber is introduced and compressed, and a discharge chamber into which the compressed refrigerant gas is discharged from the compression chamber. The suction chamber and the discharge chamber are formed adjacent to each other while being separated by a partition wall. At least one surface of the partition wall is provided with a thermal insulator which is formed by curing a thermal insulation coating composition. The thermal insulator includes hollow beads and one or more binder resin selected from the group consisting of epoxy resin, polyamide-imide resin, phenolic resin, and polyimide resin.
摘要:
A refrigeration suction mechanism used in a piston type compressor. The compressor includes a cam member mounted on a rotary shaft for the integral rotation with the rotary shaft. The rotary shaft has a refrigerant passage extending therethrough. The cam member converts a rotation of the rotary shaft to a linear reciprocating movement of pistons in cylinder bores arranged around the rotary shaft. Each of the cylinder bores defines a compression chamber by the associated piston. The refrigerant being introduced to, compressed in and discharged from the compression chamber when the piston is in a suction stroke, a compressing stroke and a discharge stroke respectively. A reaction force is generated in the compression chamber and acts on the piston when the piston (29, is in the discharge stroke. A rotary valve (35, 36, located adjacent to the rotary shaft (21, includes an introducing passage (31, 32, 57, that is in communication with the refrigerant passage. A suction passage 33A, 34A, is connected to each cylinder bore (27, 27A, 28, at its one end and selectively connected to and disconnected from the introducing passage (31, 32, 67) in accordance with the rotation of the rotary valve (35, 36, The reaction force acting on the piston (29, is transmitted to the rotary valve (35, 36, to urge the rotary valve (35, 36, 63) against the other end (331, 341, 581) of the suction passage 33A, 34A, connected to the cylinder bore (27, 27A, 28,
摘要:
A sealing mechanism is used for a compressor. The compressor has a housing, a valve plate assembly (15, 16) located in the housing. The housing has a cylinder block (11, 12) and a cylinder head (13, 14). The cylinder block (11, 12) and the cylinder head (13, 14) are connected with each other. The valve plate assembly (15, 16) has a plurality of plates (41-44). The sealing mechanism has a seal portion (45). The seal portion (45) is a peripheral portion of one of the plates (41-44) that extends radially outward in the compressor relative to the other plates (41-44). The seal portion (45) seals a peripheral section between the cylinder block (11, 12) and the cylinder head (13, 14). This provides an inexpensive and simple sealing mechanism of the compressor.
摘要:
A compressor includes a swash plate, and a shoe connected to an outer periphery of the swash plate. A surface of the swash plate slides upon a flat surface of the shoe. A sliding film is applied to the surface of the swash plate. The sliding film is formed of binder resin which contains a solid lubricant and titanium oxide powder. This allows the surface of the swash plate and the flat surface of the shoe to smoothly slide upon each other.
摘要:
A coating composition for use in sliding parts is obtained by mixing uncured polyamide-imide, a solid lubricant, titanium oxide powder and a silane coupling agent. A sliding film formed of this coating composition for use in sliding parts has excellent wear resistance and seizure resistance.
摘要:
A shaft (16) and a rotary valve (37), which are formed integrally, are made of an iron-based metal while a cylinder block (12) is made of an aluminum-based metal. A sleeve (43) forms a slide surface between the cylinder block (12) and the rotary valve (37) when the shaft (16) and the rotary valve (37) rotate together. The sleeve (43) has a coefficient of thermal expansion closer to those of the shaft (16) and the rotary valve (37) than that of the cylinder block (12). This structure prevents an increase in the clearance between the housing and the rotary valve, due to the increased temperature at the time the shaft rotates at a high speed, and prevents gas leakage and a reduction in sealability.
摘要:
A shaft (16) and a rotary valve (37), which are formed integrally, are made of an iron-based metal while a cylinder block (12) is made of an aluminum-based metal. A sleeve (43) forms a slide surface between the cylinder block (12) and the rotary valve (37) when the shaft (16) and the rotary valve (37) rotate together. The sleeve (43) has a coefficient of thermal expansion closer to those of the shaft (16) and the rotary valve (37) than that of the cylinder block (12). This structure prevents an increase in the clearance between the housing and the rotary valve, due to the increased temperature at the time the shaft rotates at a high speed, and prevents gas leakage and a reduction in sealability.