Abstract:
PROBLEM TO BE SOLVED: To suppress the manufacturing cost for a variable displacement gas compressor and to improve the flexibility in layout design of its oil supply passage and the like. SOLUTION: As an oil supply passage upstream section 47a supplying refrigerator oil R to a displacement control valve 90 also serves as a part of an oil passage 23 formed in a rear side block 20 and an oil passage 46 formed in a cylinder 40, the need for forming the part of the oil passage 23 and the oil passage 46 separately from the oil supply passage upstream section 47a is eliminated, thereby suppressing the manufacturing cost and improving the layout design flexibility of the oil supply passage 47. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce the vibration of a gas compressor by improving support stiffness by a housing with respect to a compressor body. SOLUTION: The compressor body 60 is supported by not only a conventional front head 12 but also by a case 11 via a cyclone block 70 to improve support stiffness by the housing 10 with respect to the compressor body 60 by engaging an inner tube part 71 of the cyclone block 70 (oil separator) with a delivery port 11a (delivery port) of a case 11 of the housing 10 and a main body part 71 of the cyclone block 70 respectively. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To avoid a secondary adverse effect such as the occurrence of abnormal noise even when an elastic member interposed between an inner disk and an outer ring plate is broken in a gas compressor. SOLUTION: This gas compressor comprises the inner disk 52 rotated when a rotating shaft 51 is rotated; the outer ring plate 53 so disposed as to be opposed to the side surface 71 of a pulley 70; and a rubber member 54 (elastic member) interposed between the inner disk 52 and the outer ring plate 53 and holding these both plates 52, 53 at an interval. The inner disk 52 and the outer ring plate 53 are connected to each other with auxiliary connection members 90 (guide member 91, rivets 92, 93) having a play of such a range that the inner disk 52 is not interfered with the outer ring plate 53 in such a state that the rubber member 54 is estimated to be absent therein. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a variable displacement gas compressor which simplifies an assembly structure of a filtering member for a capacity control valve with respect to a compressor body and facilitates the assembly of the filtering member. SOLUTION: In a variable displacement gas compressor 100, an oil separator 60 having a screen 61 (a filter) for separating a refrigerator oil R contained in a refrigerant gas G is assembled in an assembly body, also in the compressor body, a bypass passage 85 for communicating with a compression chamber corresponding to a compression stroke and a suction chamber 24 (low pressure space), and a capacity control valve 80 for opening/closing the bypass passage 85 are provided and a supply passage 83 (63, 29, 48) for supplying the refrigerator oil R accumulated below the oil separator 60 into the value 80 is formed, wherein the oil separator 60 is equipped with a filtering member 64 for filtering the refrigerator oil R flowing into the supply passage 83 and a filtering member supporting part 62a for supporting the filtering member 64 in an inlet portion of the supply passage 83. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a satisfactory fluororesin coating method by which peeling does not occur even to sliding under severe load conditions, a shot material used during coating substrate treatment does not remain in a base material of an aluminum alloy or the like in the vicinity of a coating layer, there is no risk of the damage of the coating layer or the like by the remaining shot material, and adhesion is excellent. SOLUTION: The surface of an object to be coated is irradiated with plasma, and the surface is finely roughened and activated. Then, the surface of the object for coating after the irradiation of the plasma is coated with a fluororesin coating, and the coated face is baked. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent metal contact of a compressor body and housing in a gas compressor during operation. SOLUTION: A compressor body including a rotating body such as a rotor 50 is provided inside a housing (a case 11 and front head 12). An outer peripheral surface of a rear side block 20 which is a part of the compressor body and an inner peripheral surface of the case 11 are held in a non-contact state by repelling magnetic forces of magnets 71, 72 provided thereto, respectively. As a result, the metal contact therebetween can be prevented and suppressed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To inhibit oil separated from gas from being made to fly over by the gas delivered from a compressor main body in a gas compressor. SOLUTION: A cyclone block 60 separating refrigerator oil R mixed in refrigerant gas G by turning refrigerant gas G delivered from the compressor main body along an inner surface of a circumference wall 62. Surface (an upper surface 63a of a bottom surface 63) facing upward in the inner surface is formed inclined so as to get lower as it goes toward an end edge 62c on a flow outlet side of refrigerant gas G of the cyclone block 60. Consequently, residence of refrigerant oil R adhering on the upper surface 63c is inhibited. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a gas compressor capable of reducing OCR in compressed gas, by enhancing a retention height level of lubricating oil in an oil reservoir, by surely preventing rolling-up of the lubricating oil in the oil reservoir. SOLUTION: This gas compressor 10 has a compressor body 12 stored in a housing 11 and sucking, compressing and delivering gas to be compressed, an oil separator 29 for separating oil in the compressed gas delivered from the compressor body, and an eaves part 11d formed on a wall surface 11c of a high pressure chamber 28 for blowing off the compressed gas from a delivery opening 31c of the oil separator 29. The eaves part 11d is formed in close vicinity to the lower edge substantially just under the lower edge of the delivery opening 31c of the oil separator 29, for effectively preventing rolling-up of the oil in the oil reservoir 35 by a compressed gas flow blown off toward the wall surface 11c of the high pressure chamber 28 from the delivery opening 31c of the oil separator 29. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To attain miniaturization and weight reduction of the whole gas compressor by attaining miniaturization and weight reduction of a housing. SOLUTION: The gas compressor is provided with a cylindrical housing 12 storing a gas compression mechanism 14 airtightly. The housing 12 is provided with a cylindrical housing body 12a opened at one end, and a cover member 12b closing the annular open end of the housing body. The cover member 12b has an annular abutting face 38a abutting on an end face 37 of the open end of the housing body 12a, and the abutting face is formed of an annular projecting part 41 rising from the abutting face along an inner peripheral wall 42 of the open end of the housing body 12a. An annular seal member 44 for airtightly sealing a clearance between the housing body 12a and the cover member 12b is disposed between the projecting part 41 and the inner peripheral wall 42 of the open end facing the projecting part. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a variable displacement type gas compressor capable of matching amount of flow-out of a part of gas in a compression stroke with desired amount precisely when the part of gas flows out selectively. SOLUTION: In this compressor 100 (variable displacement type gas compressor) for changing volume efficiency by letting a projecting part 81 of a spool valve 80 (bypass valve) retract from a bypass hole opening part 71 opened for the inside (a compression chamber 48 (C)) of a cylinder 40, a spool valve opening position where the projecting part 81 retracts into a valve storage chamber 72 from the bypass hole opening part 71 is set in such a way that flow passage area S2 calculated by multiplying distance h between a tip face 82 of the projecting part 81 and an internal wall face 72a of the valve storage chamber 72 by peripheral length of the projecting part 81 is twice or more opening area S1 of the bypass hole opening part 71. COPYRIGHT: (C)2006,JPO&NCIPI