Abstract:
PROBLEM TO BE SOLVED: To appropriately perform heat treatment from a point of view of performance and manufacturing cost of a scroll compressor in a scroll member increasing strength by applying heat treatment on work formed by semi-melting/semi-solidification die casting. SOLUTION: The fixed scroll member 124 is provided with an end plate 184a and lap 185. The lap 185 vertically extends from the end plate 184a and has a scroll shape. Heat treatment to increase tensile strength to make ratio of tensile strength to Young's module 0.0046 or less is applied to the fixed scroll member 124 after formed by semi-melting/semi-solidification die casting. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a sliding part for a compressor, which can develop sufficient durability during operation with high tensile strength, easily develops "fitness" in an early stage as much as possible, and causes no failure in abnormal operation. SOLUTION: A sliding part for compressor 17, 23, 24, 26, 39, 60, 117, 121, 123, 124, 125, 126, 127, 221, 224 or 310b is composed of iron having a carbon content of 2.0 to 2.7 wt.%, a silicon content of 1.0 to 3.0 wt.% and the balance including unavoidable impurities, with graphite being smaller than flake graphite of flake graphite cast iron, and has a hardness higher than HRB 90 and lower than HRB 100 in at least a part thereof. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a compressor capable of easily securing the accuracy of the positions of internal parts while welding the internal parts to the body casing of the compressor. SOLUTION: This method of manufacturing a compressor comprises a first step and a second step. The compressor manufactured comprises a casing 10 and a lower main bearing 60. The casing 10 comprises a part to be welded on the inner surface of a body casing part 11. The lower main bearing 60 is housed in the casing 10, and comprises an outer peripheral part 61 facing the part to be welded. In the first step, the part to be welded of the body casing 1 is opposed to the outer peripheral part 61 of the lower main bearing 60. In the second step, the casing 10 is laser-welded to the lower main bearing 60 by radiating a laser beam to at least a part of the opposed surface portion of the part to be welded and the outer peripheral part 61 along the inner surface of the body casing part 11. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a scroll compressor equipped with a scroll member capable of simplifying an inspection of a central part of a wrap while satisfying the requirement of securing strength and suppressing deformation of the central part of the wrap. SOLUTION: The movable scroll member is equipped with a mirror surface and the wrap 187. The wrap 187 extends perpendicularly from the mirror surface and has a spiral shape. Further, in the wrap 187, a spiral central part 187a from a winding start end 187a1 close to the center to a part at 90° has a constant thickness and has an arc shape having a larger curvature than when it has an involute shape. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a sliding component of a compressor capable of manufacturing the sliding component at low cost compared with a method for manufacturing the sliding component of the compressor by "producing a sliding component basic body of the compressor by thixocasting method and then performing ultrahigh precision finish work on the sliding component basic body to obtain a final sliding component". SOLUTION: The method for manufacturing the sliding component of the compressor comprises a sliding component basic body production step, a resin coating step, and a machining step. In the sliding component basic body production step, an iron sliding component basic body 25 having a tensile strength and a modulus of tensile elongation, at least one of which being higher than that of flake graphite cast iron, is produced using a specific die. In the resin coating step, a resin coated layer 25a is provided partially or entirely on the sliding component basic body without machining the sliding component basic body. In the machining step, only the resin coated layer is machined so as to obtain completed sliding components 17, 23, 24, 26, 39, 60. COPYRIGHT: (C)2007,JPO&INPIT