Abstract:
The present invention refers to a compressor which comprises: a hermetic container, a compression element and an electric element accommodated in the hermetic container, the compression element being operable to compress refrigerant; and a thrust ball bearing accommodated in the hermetic container, the thrust ball bearing supporting the shaft rotatably, the thrust ball bearing including a plurality of balls; the electric element including a shaft rotating as to drive the compression element at a predetermined operation frequency; a stator and a rotor fixed with the shaft, wherein the compression element being located on the upper side, and the electric element being located on the lower side; and wherein the rotor magnetic center being positioned to the direction offsetting the stator magnetic center which makes the additional load to the thrust ball bearing by the magnetic force. The present invention also refers to a refrigerator using the compressor.
Abstract:
An electrically-operated sealed compressor includes a cylinder, a cylinder head mounted on the cylinder and having a suction chamber and first and second discharge chambers, a piston accommodated in the cylinder, and a valve mechanism. The valve mechanism includes a suction muffler and a valve plate having at least one suction port, first and second discharge ports, and first and second pass holes. The first discharge port and the first pass hole communicate with the first discharge chamber, while the second discharge port and the second pass hole communicate with the second discharge chamber. The valve mechanism also includes first and second discharge valves mounted on the valve plate and accommodated in the first and second discharge chambers, respectively, a suction reed having a reed valve for selectively opening and closing the suction port, a discharge gasket for sealing the valve plate and the cylinder head, and a discharge muffler. The first and second discharge chambers are separated from each other by the discharge gasket to form respective independent spaces, while the first and second pass holes communicate with the discharge muffler.
Abstract:
PROBLEM TO BE SOLVED: To achieve highly efficient utilization of resources while overcoming noises and characteristic deterioration caused by the reduction in rigidity of the permanent magnet insertion part of a compressor with a synchronous motor mounted thereon. SOLUTION: A core 168 is fixed to a shaft 110 as a compression element 103. A plurality of secondary conductors 171 are arranged near the outer circumference of a rotor 155, and permanent magnets 170a are arranged on the outer circumferential side rather than the inner circumferential surface 190 of an end ring 172 positioned on the outer circumference of the rotor 155. Thereby, a highly efficient synchronous motor mounted compressor is obtained wherein the rigidity deterioration of the core 168, noises and characteristic deterioration are eliminated. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a hermetic compressor ensuring high durability and having improved volume efficiency of the compressor, while ensuring high durability of an intake reed valve to improve the volume efficiency of the compressor. SOLUTION: In the hermetic compressor, a groove part 63 is formed to a valve plate 61, a pair of pin parts 64 is disposed to the groove part 63, and a pair of hole parts 55 is formed to an installation part 54 of the intake reed valve 51. By engaging them, the intake reed valve 51 does not oscillate in a direction in parallel to a main surface of the valve plate 61. A cut and raised part 56 functions as a pressing member making a predetermined pressing force of the installation part 54 of the intake reed valve 51 act on a plate gasket 41, to allow use of the intake reed valve 51 smaller in thickness than depth of the groove part 63. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that a suction muffler is heated by a coolant swirl flow to cause deterioration of improvement in performance and efficiency in a hermetic type compressor.SOLUTION: An inside space of a hermetic type container 301 is divided by a split flow control plate 911 into a high-temperature space 900 and a low-temperature space 901 as a thermal space. A suction tube 905 for sucking a coolant gas 411 from the outside of the hermetic type container 301 and a suction muffler 410 side being the low-temperature space 901 and provided adjacently to the suction tube 905 are largely separated thermally. Accordingly, the temperature rise of the suction muffler 410 is curbed to achieve the improvement in performance and efficiency due to the improvement in volumetric efficiency.
Abstract:
PROBLEM TO BE SOLVED: To enable a flammable refrigerant to be used within in a regulated refrigerant amount range in a refrigerating air conditioning apparatus.SOLUTION: The refrigerating air conditioning apparatus 1000 exchanges heat between a heat source side refrigerant cycle 500 and a usage side transferring medium cycle 505 by an auxiliary heat exchanger 504, and a compressor 300 of the heat source side refrigerant cycle 500 is an in-container low pressure type hermetic compressor 300a, and the heat source side refrigerant 503 uses the flammable refrigerant, and the total amount of the refrigerant is reduced so that the construction can be achieved in the regulated refrigerant amount range.
Abstract:
PROBLEM TO BE SOLVED: To provide a cover for an electric component implementing both electric shock prevention and fire spread prevention. SOLUTION: In the electric component cover 16 for covering an electric component, laminated structure of two or more layers of a metallic part 18 and a part 20 made from an insulating incombustible other than metal is used as a member constituting the cover 16, or laminated structure of two or more layers of synthetic resin part 118 and an incombustible part 120 is used as a member constituting a cover 116. In a case of the former, the insulating incombustible member 20 may be disposed on an electric component side or the metallic part 18 may be disposed. In a case of the latter, any one of the synthetic resin part 118 and the incombustible part 120 may be disposed on the electric component side. In the present invention, the laminated structure may have three or more layers, not only two layers. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent oil caused by scattering of oil from an eccentric shaft from mixing into a working fluid, and temperature rise, and to effectively supply the oil to between a piston and a cylinder for reducing sliding loss.SOLUTION: The eccentric shaft 10 is provided with a closed oil supply passage 10a communicating with an oil supply mechanism of the shaft and an oil supply hole 10b opened to the outer circumference of the eccentric shaft 10. The inside of a connecting rod 22 is provided with a connecting passage 22c communicating with the oil supply hole 10b arranged on the eccentric shaft 10. The connecting passage 22c is communicated with an oil supply path 23a of a piston pin 23 to secure the supply of oil between the piston 16 and the cylinder 14. The mixing of the oil generated by scattering of the oil from the eccentric shaft 10 into the working fluid and the temperature rise are prevented and volumetric efficiency of a reciprocating compressor is improved. In addition, the oil is effectively supplied to between the piston 16 and the cylinder 14 for reducing the sliding loss.
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that decline in efficiency and reliability is caused by strain imposed by bolt clamping to a cylindrical part of a cylinder bore in a compressor of which the cylinder bore includes the cylindrical part and a tapered part.SOLUTION: A cylinder head 123 and valve components 142 are clamped and fixed by a bolt 152 to the surface of a compression chamber opening of a cylinder block 111. The cylinder block 111 includes a screw part 153 to fix the bolt 152. The screw part 153 has a counterbore 150 reaching at least the vicinity of an inflection point 131 between the cylindrical part 130 and the tapered part 132 of the cylinder bore 112, and thus the strain imposed by clamping the bolt 152 is absorbed in the tapered part 132 without reaching the cylindrical part 130. Therefore, a gap 135 on the whole circumference can be made smaller, which reduces a gas leak, keeps a compression efficiency and secures reliability. The compressor with high efficiency and reliability is thus provided.