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公开(公告)号：AU2003238161A1
公开(公告)日：2004-01-19
申请号：AU2003238161
申请日：2003-06-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： AKASHI HIRONARI , KAWABATA HIROTAKA , KUBOTA AKIHIKO , NAGAO TAKAHIDE , KATAYAMA MAKOTO , TSUBOI KOSUKE , KAKIUCHI TAKASHI , KOJIMA TAKESHI
IPC: F04B39/02
Abstract: Relating to oil feed to a piston portion in a dual support bearing of a hermetic compressor, and a structure for improving efficiency and reliability and accomplishing reduction of noise is disclosed. In this structure, since an auxiliary bearing 119 is provided with an oil feed passage 129 for conducting lubricating oil 108 discharged from an upper end of an oil feed mechanism 114, to a sliding surface of a piston 120, the lubricating oil 108 is fed to the piston 120 and a piston pin 122 from the oil feed passage 129 to make the sealing performance excellent, so that the amount of leakage of refrigerant gas from a compression chamber 117 is reduced to improve the freezing capability or efficiency. Further, lubrication of sliding portions of the piston 120 and the piston pin 122 becomes excellent so that noise caused by sliding is reduced and the reliability is improved.
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公开(公告)号：BR0312074A
公开(公告)日：2005-03-22
申请号：BR0312074
申请日：2003-06-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： AKASHI HIRONARI , KAWABATA HIROTAKA , KUBOTA AKIHIKO , NAGAO TAKAHIDE , KATAYAMA MAKOTO , TSUBOI KOSUKE , KAKIUCHI TAKASHI , KOJIMA TAKESHI
IPC: F04B39/02
Abstract: Relating to oil feed to a piston portion in a dual support bearing of a hermetic compressor, and a structure for improving efficiency and reliability and accomplishing reduction of noise is disclosed. In this structure, since an auxiliary bearing 119 is provided with an oil feed passage 129 for conducting lubricating oil 108 discharged from an upper end of an oil feed mechanism 114, to a sliding surface of a piston 120, the lubricating oil 108 is fed to the piston 120 and a piston pin 122 from the oil feed passage 129 to make the sealing performance excellent, so that the amount of leakage of refrigerant gas from a compression chamber 117 is reduced to improve the freezing capability or efficiency. Further, lubrication of sliding portions of the piston 120 and the piston pin 122 becomes excellent so that noise caused by sliding is reduced and the reliability is improved.
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公开(公告)号：AU2003289340A1
公开(公告)日：2004-07-09
申请号：AU2003289340
申请日：2003-12-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAWABATA HIROTAKA , NAGAO TAKAHIDE , KUBOTA AKIHIKO , AKASHI HIRONARI , TSUBOI KOSUKE , KAKIUCHI TAKASHI , KATAYAMA MAKOTO , KOJIMA TAKESHI
Abstract: A refrigerant compressor includes a compressor section, driver, a first contact section and a second contact section. The compressor section is accommodated in a closed container for compressing refrigerant gas. The driver drives the compressor section. The first and second contact sections are brought into contact with each other or they slide with each other by driving the compressor section. On the surface of each one of the contact sections, at least one of plural recesses uniformly placed or a mixed layer, to which molybdenum disulfide (MoS2) is bound, is formed. The foregoing structure allows increasing the abrasion resistance of the first and second contact sections.
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公开(公告)号：JP2001201194A
公开(公告)日：2001-07-27
申请号：JP2000008914
申请日：2000-01-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUBOI KOSUKE , AKASHI HIRONARI , YU KOKUSHIN
Abstract: PROBLEM TO BE SOLVED: To reduce power consumption by improving a total heat insulating efficiency in a compressor, to deal with a load change in a cold storage cabinet and a deep freezer, to make temperatures of the respective cabinets uniform and to establish a method for efficiently defrosting an evaporator. SOLUTION: A cold storage system equipped with the deep freezer comprises a first compression element, condenser, first expansion unit, low temperature evaporator, second compressing element, second expansion unit, high-temperature evaporator, and heat exchanger for heat exchanging the refrigerant flowing into a first expansion unit or a refrigerant passing the first expansion unit with the high temperature evaporator. Thus, the overall heat insulating efficiency of the first compressing element is improved. Furthermore, heat exchanging is conducted in the high-temperature evaporator, to raise a supercooling degree of the refrigerant flowing to the low-temperature evaporator, and the efficiency of a refrigerating cycle can be improved.
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公开(公告)号：JP2001055981A
公开(公告)日：2001-02-27
申请号：JP22968799
申请日：1999-08-16
Applicant: MATSUSHITA REFRIGERATION
Inventor： KATAYAMA MAKOTO , YOSHIMURA TAKAO , UMEOKA IKUTOMO , AKASHI HIRONARI , ISHIDA TAKANORI , SUGIMOTO SHUHEI , TSUBOI KOSUKE
IPC: F04B39/02
Abstract: PROBLEM TO BE SOLVED: To reduce the temperature rise of a cooling medium gas sucked into a cylinder in an enclosed compressor for high refrigerating ability and efficiency by cooling the cylinder through heat exchange with an oil. SOLUTION: An oil stirring plate 32 immersed in an oil 2 is rotated to form a rotational flow in the oil 2, whereby a cylinder 31 is cooled because a heat exchange portion 31a of the cylinder 31 immersed in the oil 2 is heat-exchanged with the oil 2 to cause lower temperature rise of a cooling medium gas sucked in the cylinder 1 to provide high refrigerating ability and efficiency.
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Patent Agency Ranking
公开(公告)号：JP2001074325A
公开(公告)日：2001-03-23
申请号：JP24751599
申请日：1999-09-01
Applicant: MATSUSHITA REFRIGERATION
Inventor： AKASHI HIRONARI , YOSHIMURA TAKAO , TSUBOI KOSUKE
Abstract: PROBLEM TO BE SOLVED: To improve the accuracy of temperature control in respective freezing and refrigerating chambers and achieve the unifying of temperature at respective parts in the chambers, the heightening of an efficiency, the reducing of an electric power consumption and the heightening of reliability. SOLUTION: A two-stage compression type freezing and refrigerating system is constituted of a two-stage compressor 20 equipped with a low-stage compressing element 23 and a high-stage compressing element 24 in a sealed vessel 21, a condenser 25, an intermediate-pressure expansion device 26, an intermediate-pressure evaporator 28, a low-pressure expansion device 29 and a low-pressure evaporator 30. The discharging side of the low-stage compressing element 23 and the suction side of the high-stage compressing element 24 are constituted so as to communicate in the sealed vessel 21 whereby the evaporating temperatures in two sets of evaporators can be controlled so as to be suitable to the temperatures in respective chambers of a freezing chamber, a refrigerating chamber or the like and the improvement of accuracy of temperature control in respective chambers as well as the unifying of temperatures at respective parts in the chambers can be achieved. Further, an intermediate pressure can be increased mainly whereby the efficiency of the two-stage compressor 20 is improved.
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公开(公告)号：JP2002147353A
公开(公告)日：2002-05-22
申请号：JP2000341558
申请日：2000-11-09
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUBOI KOSUKE
IPC: F04B39/00
Abstract: PROBLEM TO BE SOLVED: To improve refrigerating capacity and efficiency for a muffler of a hermetic compressor by heightening an intake pressure in the last half of an intake process as high as possible without responding to a rotational frequency to enlarge a refrigerant circulation volume. SOLUTION: This hermetic compressor is formed with a motor part, a piston, a machine part such as a cylinder, a closed container containing the motor part and the machine part, and a muffler made of an intake passage and a volume part and an inlet passage and comprises at the volume part a movable means allowing changing an inside volume of the volume part. A pressure pulsation period inside the muffler can be changed according to the rotational frequency to heighten always the refrigerant pressure in the last half of the intake process. Accordingly, the refrigerant circulation volume is enlarged for improving the refrigerating capacity without responding to the rotational frequency to improve the efficiency.
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公开(公告)号：JP2001055976A
公开(公告)日：2001-02-27
申请号：JP22965099
申请日：1999-08-16
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGIMOTO SHUHEI , YOSHIMURA TAKAO , UMEOKA IKUTOMO , AKASHI HIRONARI , ISHIDA TAKANORI , KATAYAMA MAKOTO , TSUBOI KOSUKE
IPC: F04B39/00
Abstract: PROBLEM TO BE SOLVED: To reduce suctioning loss of refrigerant in a muffler and improve efficiency in respect to a hermetically closed type compressor adapted to a household refrigerator. SOLUTION: This hermetically closed type compressor is composed of a motor part, a hermetically closed vessel housing a mechanical part such as a cylinder, a muffler 25, and a suction pipe 29. The muffler 25 has a muffler inlet flow passage 26 communicated with a space inside the hermetically closed vessel, and a muffler outlet passage 27 communicated with the cylinder. The suction pipe 29, muffler inlet passage 26, and muffler outlet passage 27 have the equally sized sectional areas or increasing ones in this order. Refrigerant in the muffler 25 is thus suctioned into the side of the cylinder without receiving passage resistance. It is therefore possible to improve suctioning efficiency and compression efficiency.
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公开(公告)号：JP2001254673A
公开(公告)日：2001-09-21
申请号：JP2000066530
申请日：2000-03-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： YU KOKUSHIN , AKASHI HIRONARI , TSUBOI KOSUKE
Abstract: PROBLEM TO BE SOLVED: To apply a hermetic compressor to a multi-pressure refrigerating system, to improve in efficiency, reduce in consumption power, and improve in reliability. SOLUTION: A motor 30, a first compression element 31, and a second compression element 32 are provided in a hermetic vessel 29. A suction pipe 46 for the first compression element 31 and a suction muffler 36 are not connected with the internal part of the hermetic vessel 29 and a discharge pipe 47 for the first compression element 31, a discharge pipe 48, and a discharge muffler 37 are not communicated with the internal part of the hermetic vessel 29. A discharge pipe 50 for a discharge muffler 37, a discharge pipe 48, and a discharge muffler 37 are not connected with the internal part of the hermetic vessel 29 but a suction pipe 49 for a second compression element 32, and a suction muffler 41 are communicated with the internal part of the hermetic vessel 29. Since constituted in a manner described above, two suction pressures and two discharge pressures are supplied to a refrigerating system, and an hermetic compressor is provided to improve efficiency and reliability and facilitate control of a refrigerant flow rate.
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公开(公告)号：JP2001108345A
公开(公告)日：2001-04-20
申请号：JP28651799
申请日：1999-10-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUBOI KOSUKE , AKASHI HIRONARI , YOSHIMURA TAKAO
Abstract: PROBLEM TO BE SOLVED: To obtain a two-stage freezer/refrigerator in which variation of load in the freezer compartment and the refrigeration compartment can be dealt with, temperature in the compartment can be made uniform, and defrosting method of an evaporator is established while reducing power consumption. SOLUTION: The two-stage freezer/refrigerator comprises a first on/off valve 29, a second on/off valve 30, a third on/off valve 31, a fourth on/off valve 32, a fifth on/off valve 33, a first bypath 35 interconnecting the delivery side of a low stage compression element 22 and the delivery side of a high stage compression element 23, a sixth on/off valve 36, a second bypath 37 interconnecting the suction side of the low stage compression element 22 and the section side of the high stage compression element 23, and a seventh on/off valve 38. Each compartment can be cooled correctly or cooled quickly depending on the variation of load in the freezer compartment and the refrigeration compartment by controlling opening/closing of these valves and bypaths. Furthermore, cooling of any one of the freezer compartment or the refrigeration compartment can be stopped at the time of defrosting a cooler and the cooler can be defrosted without relying on an external heating means.
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