Abstract:
PROBLEM TO BE SOLVED: To prevent the inner cylinder member of an oil separator from dropping from a main body member without adding any parts and processes, in a gas compressor. SOLUTION: A cyclone block 70 is provided with the main body member 71 having a substantially cylindrical space 71d and a substantially cylindrical inner cylinder member 72 inserted from an opening 71e in the main body member 71 in a direction (M) along a direction of a substantially cylindrical shaft C1. In a state that the main body member 71 is assembled to a compressor main body 60 by a fastening member 78, a through-hole 71f for arranging the fastening member 78 through the main body member 71 is formed so that a head part 78a of the fastening member 78 is positioned on a virtual trajectory line 72d of an end edge part 72c at an opening 71e side of the main body member 71 in the inner cylinder member 72 in a direction that the inner cylinder member 72 escapes out through the opening 71e of the main body member 71 (in a direction of an arrow N (an opposite direction of an arrow M)) and near the end edge part 72c. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent clogging of a mesh of a filter of an oil separator in a gas compressor. SOLUTION: The filter 74 is constituted by superimposing two or more gauzes 77 of predetermined mesh on one another. The filter 74 is provided with a frame body 76 (a spacer, and a clearance retaining member) having a thickness of t which separates superimposed gauzes (77a, 77b, 77c, etc.) from each other and which retains them so that clearances (75a, 75b, etc.) are formed between the two or more superimposed gauze parts (between 77a and 77b, between 77b and 77c, etc.). COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a gas compressor that inhibits the increase of frictional force between vane tip and inner circumferential surface of cylinder, even if the amount of an oil content that returns to a gas compressor reduces. SOLUTION: Oil content passages 58c, 58f, 58h that communicate with a tip 58a of protruding from a burial side end 58b are formed in a vane 58 protruding from an outer circumferential surface 50a of a rotor 50, as well as there is arranged a ball valve consisting of a ball 58d and a spring 58e in the oil content passages 58f, that is displaced between an open position that permits the passage of the oil content passages 58c, 58f, 58h and a close position that blocks it. The ball valve is positioned at a close position when a resultant force (resultant pressure) F of a pressure Pv of refrigerating machine oil R in a vane back pressure chamber 59 acting on the burial side end 58b and a centrifugal force C acting on the ball valve 58d is less than a predetermined threshold value, and positioned at an open position when the resultant force F is equal to or greater than the predetermined threshold value. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a gas compressor having an oil separator which is manufactured in a simpler manufacturing process. SOLUTION: A body part of a cyclone block 70 (the oil separator) is not provided with a so-called bottom wall part. On the other hand, a rib 11c for enhancing strength is formed in an end surface 11b (an inner wall surface) of a case 11 (a housing) for accommodating the cyclone block 70. In the state where the cyclone block 70 is accommodated inside the case 11, the rib 11c formed on the end surface 11b of the case 11 is arranged in a part equivalent to the bottom wall part of the body part 71. As a result, a simple manufacturing process is provided by including no bottom wall part as a cyclone block 70 single unit before assembly and integrally molding the body part 71 and inner cylinder part 72 while exhibiting a function of the cyclone block 70 as a compressor 100 (a gas compressor). COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To maintain a delivery space without bolt fastening of a delivery valve in a gas compressor. SOLUTION: A delivery valve (a valve 42 and a valve support 43) opening and closing a delivery hole 41 communicating to a delivery chamber 45 from a compression chamber 48 is gripped between two side blocks 20, 30 in the delivery chamber 45 (delivery space) defined by the two side blocks 20, 30 (gripping structure members) gripping a cylinder 40 and a rotor 50 (volume change structure parts) changing volume of the compression chamber 48 as a rotary shaft 51 rotates from both surface sides crossing the rotary shaft 51 at right angle, and an outer circumference surface of the cylinder 40 which is an outer circumference wall of the compression chamber 48. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a gas compressor capable of properly advancing a vane even in starting, and having a fail-safe function for an excessive compression state of a suction compression chamber. SOLUTION: In this gas compressor 10, a compressor body 12 stored inside a housing 11 has a rotor 20, a cylinder body 16 and the vane 23 held by a slit groove 24 of the rotor 20, and the suction compression space 25 is defined. A guide groove 54 is arranged in at least one 18c of an inner wall surface of a cylinder 16, and the vane 23 is provided with an engaging part 50 freely going in and out of a side wall surface 23c to be engageable with the guide groove 54. The guide groove 54 presents an annular ring shape along a locus drawn by a fixed point of the vane 23 advancing-retreating from the slit groove 24 when the tip 23a follows a contour shape of the cylinder 16, and is extended until the suction compression space 25 defined on the front side of the vane 23 when viewed in the rotational direction of the rotor 20, reaches a predetermined position in a compression stroke from a suction stroke. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent leakage from a fastening member, by fastening a fastening part by the fastening member composed of a bolt and a gasket plated with a zincate bath, in a gas compressor. SOLUTION: This gas compressor has a housing 10 having a storage space inside, by fastening a case 11 and a front head 12 by a first fastening member 80, and a compressor body 60 stored in the storage space, fastened to the housing 10 by a second fastening member 70 and compressing gas. The second fastening member 70 is formed of the fastening member formed by combining the bolt 71 plated by the zincate bath and the copper material gasket 72 plated with tin. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce the size, weight and cost of a gas compressor. SOLUTION: A part of a cyclone block 60 and a part of a housing are used in common by integrally forming the cyclone block 60 with the housing (case 11), and the number of part items constituting a compressor 100 is substantially reduced. Manufacturing cost and weight are reduced in response to reduction in this number of part items. The size of the compressor 100 is reduced by eliminating a space such as a delivery chamber formed in a conventional compressor up to a delivery port 11a from an upper part 66a by forming the upper part 66a of the cyclone block 60 as the delivery port 11a to an external part of the compressor 100 itself. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary gas compressor that supplies a lubricant to the front bearing of front-side blocks supporting the rotary shaft of a rotor without a leakage of the lubricant into a compression chamber. SOLUTION: This rotary gas compressor 10 is provided with a compression chamber 28 of which the capacity increases or decreases following the rotation of a rotor 25 in a cylinder room 24 consisting of the rotor 25 with a rotary shaft 19, a tubular cylinder body 21, a rear-side block 23 having a rear-side bearing 50 for supporting the rotary shaft 19, and a front-side block 22 having a front-side bearing 51 for supporting the rotary shaft 19. The compression mechanism 12 has a lubricant supply route 40 to supply a lubricant from its discharge chamber 33 to a rear-side bearing 50 and front-side bearing 51. The lubricant supply route 40 comprises a rear supply route part 41 formed in a rear-side block 23 and communicating with the bottom of the discharge chamber 33 and the rear-side bearing 50, and a shaft supply route part 42 formed in the rotary shaft 19 and communicating the rear supply route part 41 with the front-side bearing 51. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent leakage of gas to the outside from between a head and a case by preventing deformation of the head of a housing in a gas compressor. SOLUTION: The deformation is prevented by enhancing rigidity of a wall part C by forming bolt penetrating sleeve parts 12b and 12d in a part adjacent to a suction passage 11c among the wall part C for partitioning a suction chamber 34 for allowing the inflow of refrigerant gas G passing through the suction passage 11c formed in substantially parallel to a rotary shaft 51. COPYRIGHT: (C)2007,JPO&INPIT