-
公开(公告)号：JP2000291551A
公开(公告)日：2000-10-17
申请号：JP9858099
申请日：1999-04-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： ISHIDA TAKANORI , ODA MASATAKA , TANAKA YASUHIKO
IPC: F04B39/02
Abstract: PROBLEM TO BE SOLVED: To obtain sufficient pumping and an oil rate, even if oil having low viscosity is employed by supporting an oiling pump, having a diameter smaller than that of a rotary shaft of an electric motor into a cylindrical bore, forming an inclining passage between an upper end of the cylindrical bore and a lower part of a bearing, and forming a spiral groove on an outer peripheral surface of the rotary shaft. SOLUTION: In this hermetic electric compressor 1, wherein a compressor unit 6 formed by integrating an electric motor 3 and a compression mechanism 4 with a block 5 is housed in a hermetic container 2, an oiling pump 17 is pressed in to a cylindrical bore 18 which is disposed on a lower end of a rotary shaft 7 journalled to a bearing part 8 of the block 5 and which has a diameter smaller than that of the rotary shaft 7. An inclining passage 19 is disposed slantedly from an upper end of the cylindrical bore 18 and extendedly upward, and a cylindrical passage 31 is disposed extendedly upward from an upper end of the cylindrical bore 18. A spiral groove 20 is disposed to communicate with a sharing passage of the inclining passage 19 and the cylindrical passage 31 through a lower horizontal hole 21, and the upper end of the spiral groove 20 is disposed in an eccentric passage 23 in an eccentric shaft 9, while communicating with an upper horizontal hole 24.
-
公开(公告)号：JP2000120539A
公开(公告)日：2000-04-25
申请号：JP28908598
申请日：1998-10-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： HIRATSUKA SATOSHI , ISHIDA TAKANORI
Abstract: PROBLEM TO BE SOLVED: To improve reliability by reducing abrasion due to metal-to-metal contact on a thrust sliding, even in a state that the supply of refrigerating machine oil to the thrust sliding surface is insufficient in times of starting, low-speed operation and so on, in the centrifugal pump effect of an oil feeding mechanism installed in a shaft. SOLUTION: A flange lower end sliding surface 30 and a thrust upper end sliding surface 31 constituting a thrust bearing 32 are formed into a conical surface bearing construction. Since a thrust sliding part is formed into the conical surface bearing, an oil film is made up in space between the flange lower end sliding surface 30 and the thrust upper end sliding surface 31 by rotation of a shaft 2 in an easy manner by a squeeze film action, just like a journal bearing. Therefore metal-to-metal contact is prevented from occurring, and thus a reduction in abrasion is realizable.
-
公开(公告)号：JPH1183244A
公开(公告)日：1999-03-26
申请号：JP24807097
申请日：1997-09-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： SASABE SHIGERU , SAKAI TOSHIKAZU , NOZUE AKIHIRO , ISHIDA TAKANORI , HIRATSUKA SATOSHI
IPC: F25B45/00
Abstract: PROBLEM TO BE SOLVED: To prevent explosion at the time of collecting a flammable gas coolant by fixing the stator of a motor for a compressor to the outside of an enclosed container and arranging the rotor of the motor on the inside of the enclosed container. SOLUTION: At the time of collecting the flammable gas coolant, e.g. isobutane, of a cooler 1, the air is mixed with the flammable gas in the system piping of a coolant collection unit if a large quantity of air in a case 2 is mixed through gas leakage from a collection port 3 or an on/off valve 6. The mixture gas of the flammable gas and the air is absorbed into the enclosed container of a compressor 7 through operation thereof. Since the stator of a motor is arranged on the outside of the enclosed container, the mixture gas of the flammable gas and the air does not touch a spark generated from the stator of the motor even in case of abnormal overheat where the concentration of flammable gas in the enclosed container reaches the explosion range thus preventing explosion.
-
公开(公告)号：JPH07133761A
公开(公告)日：1995-05-23
申请号：JP28240993
申请日：1993-11-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： ISHIDA TAKANORI , TAKAICHI KENJI , SAKAI TOSHIKAZU , TADA KOJI
IPC: F04B39/00
Abstract: PURPOSE:To enhance durability of a compressor using a specific refrigerant by forming a bearing for supporting a shaft made of cast iron of aluminum alloy cast, and casting a preform of ceramic fiber having a specific porosity in the inner circumferential surface. CONSTITUTION:A shaft 4 made of cast iron press-fitted into a rotor 2 is supported by a bearing 11 by a motor comprising the rotor 2 and a stator 3 so that a compressor is rotated. A piston 8 is reciprocated via a piston pin 9 by a connecting rod 6 attached to an eccentric portion of the shaft 4. As a result, refrigerant gas composed of 1,1,1,2-tetrafluoroethane is sucked into a space 10 defined inside a cylinder 7, followed by compression. The bearing 11 supporting the shaft 4 is formed of aluminum alloy cast, and a preform of ceramic fiber having a porosity of 70-90% is cast in the inner circumferential surface. Consequently, it is possible to enhance heat radiation performance and mechanical strength.
-
公开(公告)号：JP2001200789A
公开(公告)日：2001-07-27
申请号：JP2000008915
申请日：2000-01-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： HAYASHI AKIRA , MORITA ICHIRO , KAWABATA JUNTA , KOBAYASHI MASANORI , INAGAKI KO , ISHIDA TAKANORI , KATAYAMA MAKOTO
Abstract: PROBLEM TO BE SOLVED: To miniaturize a vibration type compressor as well as preventing reduction of piston position detecting accuracy. SOLUTION: A fixing part 19a of a displacement detector 19 is disposed on the end part of the reverse compression chamber side of a cylinder 15, and a movable core part 19b is disposed on an outer peripheral part of a piston 16. Reduction of the position detecting accuracy caused by the influence of assembly accuracy can be prevented, and also the compressor can be miniaturized.
-
Patent Agency Ranking
公开(公告)号：JP2001165044A
公开(公告)日：2001-06-19
申请号：JP35131199
申请日：1999-12-10
Applicant: MATSUSHITA REFRIGERATION
Inventor： ISHIDA TAKANORI , MORITA ICHIRO , KAWABATA JUNTA , INAGAKI KO , KATAYAMA MAKOTO , HAYASHI AKIRA
Abstract: PROBLEM TO BE SOLVED: To provide a slide member for a compressor, pump, etc., in this invention, having high reliability by attaining low friction in a slide location and improving abrasion resistance in the case a small amount of oil is supplied or even under a condition of oil free. SOLUTION: A compression mechanism, a refrigerant, and refrigerator oil are housed in a closed vessel, this slide member is characterized by consisting of compound material blending nickel powder and carbon powder by 1 to 30 wt.% in total relating to titanium boride ceramics powder of 70 to 99 wt.% in at least one slide material in the compression mechanism. In addition to abrasion resistance provided in titanium boride ceramics itself, by self lubrication with boride, a compressor and a pump are obtained in high reliability and high efficiency even in the case oil supply is in a poor condition.
-
公开(公告)号：JPH10141227A
公开(公告)日：1998-05-26
申请号：JP30157796
申请日：1996-11-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： ISHIDA TAKANORI
Abstract: PROBLEM TO BE SOLVED: To improve durability and efficiency of a compressor, in a compressor to be used for a refrigerator-freezer, an air conditioner or the like. SOLUTION: An oil supplying passage to sliding parts of a cylinder 14 in which a supply hole 14a is formed on the upper part, and a piston 15 in which one oil groove 15a is formed on the front surface in the slide direction and two oil grooves 15b are formed on parts separated from both end surfaces by 10mm or less is formed, gas nitriding treatment and steam treatment in which the moisture content in NH3 gas is in the range of 3 to 10% are performed to the front surface of the piston 15, a solid solution layer having the whole film thickness in the range of 20 to 30μm or more and containing nitrogen and oxygen is formed, and an oxide film layer is formed on it, and therefore, high durability and high efficiency of a compressor can be obtained.
-
公开(公告)号：JPH09324757A
公开(公告)日：1997-12-16
申请号：JP14407596
申请日：1996-06-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： ISHIDA TAKANORI
IPC: F04B39/02
Abstract: PROBLEM TO BE SOLVED: To optimize sliding member and constitute oil film formation easily established therebetween so that compressor friction loss can be suppressed and the longer durability of compressor can be expected in a compressor used for refrigeration or air conditioning or the like, wherein 1, 1, 1, 2 tetrafluoroethane is employed as compressible gas. SOLUTION: In the constitution of compressor, supporting surface of a thrust bearing 14 composed of aluminium alloy, provides a triangular oil groove whose cut angle is more than 120 degrees of obtuse angle, and between a rotor 3 and the bearing 14, a thrust supporting member comprising phenol hardened material containing 10-50% by weight of cotton threads or glass fiber is provided, so that lubrication and frictional characteristics can be promoted, and resultantly, efficiency and durability of compressor can be promoted.
-
公开(公告)号：JPH07293463A
公开(公告)日：1995-11-07
申请号：JP8156394
申请日：1994-04-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： TADA KOJI , TAKAICHI KENJI , SAKAI TOSHIKAZU , ISHIDA TAKANORI
IPC: F04C18/356
Abstract: PURPOSE:To restrain abrasion so as to improve durability of a compressor by forming the specific compound layer on the front surface of a vane made of chrome contained alloy steel or the like, and applying ceramic coating on the compound layer except for the specific part. CONSTITUTION:A vane 5 adapts alloy steel containing chrome or iron group sintered material as a base material 5a, and a diffusion layer 5b of nitrogen is provided and precisely finished, and then a compound layer 5c made of iron, chrome and nitrogen is formed on the front surface, moreover a ceramic coating 5d made of chrome nitride, titanium nitride or titanium carbide is formed on the tip. And, the boundary part of the tip and the side surface to slidably moved together with a groove of the cylinder is eliminated by polishing a protruding part 5e near the side surface of the coating 5d.
-
公开(公告)号：JPH07259755A
公开(公告)日：1995-10-09
申请号：JP5181294
申请日：1994-03-23
Applicant: MATSUSHITA REFRIGERATION
Inventor： TAKAICHI KENJI , SAKAI TOSHIKAZU , TADA KOJI , ISHIDA TAKANORI
Abstract: PURPOSE:To prevent the occurrence of wear of an Oldham's ring owing to the increase of a load occasioned by the use of a low lubricity halogenized carbonization compound system mixture refrigerant and the improvement of performance of a compressor and to improve durability, in a scroll type compressor, especially a slide member, used in a freezing refrigerating device and an air-conditioner. CONSTITUTION:A scroll type compressor comprises a revolving scroll and a fixed scroll which have a spiral lap standing-upright on an end plate and are geared with each other; a block fixing the fixed scroll; and an Oldham's ring 1 being a rotation preventing mechanism to effect revolving movement through prevention of rotation of the revolving scroll. The Oldham's ring 1 has an aluminum alloy cast 1c in which preform 1b of ceramic fibers is cast.
-
-
-
-
-
-
-
-
-
Search Results
38
records
(took 0.021 seconds)
