Abstract:
PROBLEM TO BE SOLVED: To solve the problems wherein, since a stator side surface and a body casing are directly fixed, vibration generated in a stator is transmitted to the body casing, thereby increasing noise.SOLUTION: This compressor includes a motor 5 stored in the body casing 3, and a compression mechanism section 4 driven the motor 5. The stator 5a of the motor 5 and the body casing 3 are fixed through rubber 32 as a fixing member including an elastic member, thereby damping the vibration generated by the stator 5a by the fixing member. Accordingly, it is possible to provide the low-noise compressor suppressing transmission of vibration between the body casing 3 and the stator 5a.
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that, when excessive oil is supplied from a high pressure region to a back pressure chamber, excessive back pressure is applied to a rotary scroll to increase a thrust load, thus causing deterioraton of performance and reliability, in a scroll compressor controlling back pressure by intermittently connecting a back pressure chamber with a compression chamber. SOLUTION: The scroll compressor allows oil to intermittently flow from the high pressure region 30 to the back pressure chamber 29 and allows oil to intermittently flow from the back pressure chamber 29 to the compression chamber 15 so as to prevent supply of excessive oil 6 to the back pressure chamber 29, thus allowing application of stable back pressure. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve problems in improvement of seizure resistance and wear resistance, and reduction of sliding loss at a sliding part of a fluid machine requiring efficiency and durability, for example, problems at a sliding part of a scroll made of aluminum alloy in a scroll compressor using carbon dioxide as refrigerant. SOLUTION: A lubricating oxidation film layer containing solid lubricant is formed on a sliding surface layer by making minute powder of solid lubricant collide on the sliding surface of a sliding member (movable scroll 3) containing aluminum as a principle ingredient after forming anodic oxidation film by anodic oxidation treatment thereon. Consequently, improvement of seizure resistance and wear resistance, and reduction of sliding loss cane materialized, and a fluid machine of high reliability and efficiency can be provided. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a scroll compressor high in reliability and efficiency, by equally preventing uneven contact of a crankshaft in a main bearing part in all of directions of the main bearing part. SOLUTION: An annular thin part 16 is formed to an outer periphery of a rotary scroll side end part 14 of the main bearing part 4. In the thin part 16, the portion in a direction having a maximum load force acting on the main bearing 4 is the thinnest. During a rotation of the crankshaft 3, an elastic deformation amount of the main bearing part 4 is the maximum, in a the direction of the maximum load force acting on the main bearing 4, and the uneven contact with the crankshaft 3 is equally prevented in all of the directions of the main bearing, so that the oil film thickness of fluid lubrication is uniformly maintained to improve reliability and efficiency. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To sufficiently deliver gas-liquid separated gas from an external delivery pipe 39, by substantially restricting and treating a refrigerant 27 and oil 6. SOLUTION: Refrigerant gas 27 including the oil 6 is delivered from a delivery port 18, and passes through a stator passage 37 after passing through a rotor passage 36, and is delivered outside a sealed vessel 1 by passing through the external delivery pipe 39 arranged in a part above a position of a stator upper chamber 38 of a sealed vessel 1 after passing through to the stator upper chamber 38 on the outer periphery of a connecting passage 34, but the refrigerant gas 27 including the oil 6 collides with a gas-liquid separating collision wall 100 by arranging the gas-liquid separating collision wall 100 on the periphery of the external delivery pipe 39 as Fig. 1 so that the refrigerant gas 27 including the oil 6 is not delivered as it is outside the sealed vessel 1, and the oil 6 sticks to the gas-liquid separating collision wall 100, and only the refrigerant gas 27 is delivered outside the sealed vessel 1, and gas-liquid is efficiently separated. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent an eccentric shaft integrally formed with a driving shaft from partially contacting with an eccentric shaft bearing mounted to a cylindrical boss part of a turning scroll.SOLUTION: An elastic element 20 is disposed between an outer diameter of a main shaft bearing member 51 and an inner diameter of a body casing 3. Accordingly, even if there is a fine gap between the outer diameter of the main bearing member 51 and the inner diameter of the body casing 3, the main bearing member 51 is deviated in one direction of the body casing 3, and can be fixed at a position where the entire circumferential gap of the main bearing member 51 is uniform. A main shaft 14b supported by a main shaft bearing 42 of a driving shaft 14 is not tilted toward an auxiliary shaft 14c supported by an auxiliary shaft bearing 41, and an eccentric shaft 14a integrally formed with the driving shaft 14 does not partially contact with an eccentric shaft bearing 43 mounted to a cylindrical boss 12c of a turning scroll 12. As a result, performance of a scroll compressor is improved.
Abstract:
PROBLEM TO BE SOLVED: To easily and surely fix a stator to a housing.SOLUTION: One axial end of the stator 10 is made to abut on an axial step part 15 on an inner periphery of the housing 1, a plurality of notch parts 16 are set to an outer circumference of the stator 10, spacers 18 having tapered faces are inserted into at least three clearances 17 between the notch parts 16 and inner periphery of the housing 1 in a state of having fastening margins respectively, the end faces are made to abut on a compression mechanism 6, at least one rib 23 is set in the inner periphery of the housing 1, and the rib 23 is made to abut on the notch part 16. Thereby, the stator 10 is fixed to the housing 1 in the axis direction with the axial step part 15 and tapered face 20 of the spacer 18, and is fixed in the circumferential direction with the rib 23, thus the stator 10 can be surely fixed to the housing 1.
Abstract:
PROBLEM TO BE SOLVED: To provide a rotation preventing mechanism which enlarges the turning radius while maintaining a compression mechanism part in the same size as a conventional one without providing a flank in a peripheral part of a bearing member, and to provide a scroll compressor to design a suction capacity large using the same. SOLUTION: A pair of key parts 13 and 14 respectively provided on a surface and the other surface of an Oldham's ring 12 as a rotation preventing mechanism and a pair of key groove parts 15 and 16, in which the pair of key parts 13 and 14 are to be slidably fitted and which are respectively provided in a turning scroll and a bearing member 6 as driven members, are displaced from the diameter line while holding the sliding surfaces thereof in parallel with each other. Thereby, since the turning radius can be designed large, suction capacity can be increased without increasing the outer diameter and the height of the compression mechanism part. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that may cause deterioration in performance by causing an excessive compression loss due to narrow communication path reaching a discharge port though refrigerant gas in a compression chamber reaches prescribed pressure. SOLUTION: A discharge port 18 straddles a lap 13a of a turning scroll 13 and enters into a first compression chamber 15a substantially simultaneously before/after a first compression chamber 15a is spaced. Since the discharge port 18 is directly opened to the first compression chamber 15a, a communication path can be sufficiently secured in addition to the clearance between laps of both scrolls. As a result, excessive compression loss can be reduced. COPYRIGHT: (C)2011,JPO&INPIT