摘要:
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.
摘要:
There is provided a black photoresist composition comprising a carbon black grafted with a polymer compound, a resin material, a crosslinking agent and a photo acid generator, in which specific amounts of the grafted carbon black, the resin material, the crosslinking agent and the photo acid generator are comprised. In addition, there is provided a color filter that has a black matrix made by using this black photoresist composition and is free of protuberances at the overlapping portions of multi-color picture elements and the black matrix. Thus, the present invention is able to provide a black photoresist composition, a color filter using the black photoresist composition, and a method for preparing the color filter that allows the formation of a black matrix having a high density that blocks out light and low reflectance, and the production of a color filter having a high degree of flatness and high film strength.
摘要:
A double-headed swash-plate operated reciprocating piston type refrigerant compressor having front and rear cylinder blocks provided with axial cylinder bores for receiving the double-headed pistons reciprocated by a swash plate mounted on an axial drive shaft rotating about an axis of rotation thereof together with the swash plate which is axially and rigidly supported by front and rear thrust bearing assemblies including an elastic unit arranged between the thrust bearing of at least one of the front and rear thrust bearing assemblies and a pressure receiving seat formed in the shoulder portion of the swash plate, the elastic unit providing the swash plate with a axial mechanical support having a rigidity which changes in a stepwise manner in response to a change in a discharge pressure of the refrigerant compressed by the compressor.
摘要:
A refrigerant compressor, typically a swash plate type refrigerant compressor for compressing refrigerant gas containing therein lubricating oil, which has axially combined cylinder blocks having a plurality of cylinder bores in which a plurality of pistons reciprocate to implement suction and compression of refrigerant gas as well as discharge of the compressed refrigerant gas. The cylinder blocks further have a swash plate chamber for a swash plate supported by a sliding type thrust bearings, receiving the refrigerant gas returning from an exterior of the compressor, and an axially extending central through-bore for a drive shaft supported by radial bearings. The compressor has a lubricating oil system which includes a fluid passageway for supplying a part of the refrigerant gas containing the lubricating oil from refrigerant gas inlet passageways in the cylinder blocks into the central bore to lubricate the sliding type thrust bearings and the radial bearings. Additional gas passageways may be provided in the valve plate for providing communication between some cylinder bores and the central bore in synchronism with opening of suction valves of some cylinder bores so that introduction of the part of the refrigerant gas into the central bore from the swash plate is promoted.
摘要:
A swash plate type compressor includes an improved thrust bearing for axially supporting the swash plate. The bearing is of a composite type, and includes at least two elastically deformable slide bearing elements. The swash plate and the cylinder block each have seat portions, which are of different diameters. The two bearing elements are compressed between the respective seat portions into an elastically deformed conically-shaped state, with the amount of conical deformation depending upon the amount of axial compression that is applied to the bearing by tightening the assembly bolts of the compressor. In operation, one of the conically shaped slide bearing elements is pressed outwardly against the other by centrifugal force as the compressor shaft rotates. During start up and low speed operation of the compressor, this centrifugal force will have minimal effect, and the bearing elements will rotate with respect to each other, keeping internal frictional resistance low. At higher speeds, however, the centrifugal force will both bind the bearing elements to move together as a unit and will impart additional supportive force to the swash plate that will tend to minimize vibration and noise during operation.
摘要:
Disclosed is a compressor designed to facilitate the assembling of the thrust bearing and reduce noise. A swash plate which moves in responsive to the drive shaft is arranged in a crank chamber defined in a pair of cylinder blocks. Ring washers are held between both bosses of the swash plate and seats formed on both cylinder blocks. Wedge-like clearances are formed between the washers and the seats of the cylinder blocks for the effective introduction of the refrigerant gas by the yawing of the swash plate which occurs as the compressor runs. At this time, the washers, together with the lubrication oil mist contained in the refrigerant gas, constitute the dynamic bearing to support the swash plate and permit the relative movement of the swash plate to the cylinder blocks.
摘要:
A reciprocating piston compressor adapted to receive a low pressure gas from an external circuit, and to supply a high pressure gas to the external circuit includes a cylinder block with front and rear ends. The cylinder block includes a central bore extending along the longitudinal axis, and a plurality of axially extending cylinder bores. The central bore has an open end at the front end of the cylinder block and an opposite closed end. Pistons are slidably provided within the cylinder bores for reciprocation. A drive shaft is inserted into the central bore for driving the motion of the reciprocating pistons. A pair of radial bearings, which are provided in the central bore, supports the axially extending drive shaft. An oil separator is provided between the compressor and the external circuit to remove lubricating oil contained in the high pressure gas. An oil reservoir is provided for accumulating the lubricating oil removed from the high pressure gas by the oil separator, the cylinder block including at least a portion of the oil reservoir adjacent to the blind end of the central bore.
摘要:
A suspension polymerization of a polymerizable monomer in the presence of an emulsion polymerization inhibitor is disclosed. The inhibitor is an aromatic series compound having a NO.sub.2 group, a SO.sub.3 Na group, and a secondary amino group, representatively, the following compound. In this suspension polymerization, the production of by-produced microfine particles caused by the emulsion polymerization as the secondary polymerization scheme is repressed. ##STR1##
摘要:
A multi-piston type refrigerant compressor having a cylinder block unit in which a plurality of cylinder bores receiving a plurality of reciprocating pistons for sucking a refrigerant gas, compressing the refrigerant gas, and discharging the compressed refrigerant gas, and a piston reciprocating actuating mechanism are housed, and a muffling unit defined by upright walls integral with the cylinder block unit and including a suction pulsation damping chamber, a discharge pulsation damping chamber, and an arrangement in which the covering plate of the muffling chamber, having ports formed so as to fluidly connect suction and delivery gas pipes to the muffling chamber, is arranged to be inclined, with respect to a horizontal plane, towards one of the cylinder block units.