公开(公告)号：JP2000110724A

公开(公告)日：2000-04-18

申请号：JP28623298

申请日：1998-10-08

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04B39/00 ,  F04B35/04 ,  F04B39/02 ,  F16C33/10

Abstract: PROBLEM TO BE SOLVED: To improve lubricating characteristics of sliding materials even with the supply of an insufficient amount of oil by employing a sliding components made of a porous sintered alloy whose voids are impregnated with a soluble oil. SOLUTION: Voids 14 in a surface structure of a sliding surface of a piston 13 made of a porous sintered alloy are packed with a soluble refrigerating machine oil 15, for example, an ester-based oil for an HFC-based refrigerant. Through agitation using a piston or resonance spring made of an aluminum- based alloy and casting material, a greater amount of oil is supplied to the sliding surface than in ordinary cases, which results in the supply of oil being stabilized. This in turn improves wear resistance. In addition, the presence of the soluble refrigerating machine oil 15 on the sliding surface makes possible an oil-less compressor not charged with a refrigerating machine oil.

公开(公告)号：JPH11107956A

公开(公告)日：1999-04-20

申请号：JP27236297

申请日：1997-10-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04C29/00 ,  F04C18/356

Abstract: PROBLEM TO BE SOLVED: To enhance the wear-resistance of a rotary compressor adapted to be used for refrigerating cycle or the like, by changing the material of a slide member and refrigerator oil. SOLUTION: With the use of a vane 20 coated thereover with ceramic such as chromium nitride(CrN), a roller 21 made of an iron base material having an outer surface implanted with oxide ions, and refrigerator oil containing a phosphorus base extreme-pressure additive, that is, TCP(tricresyl phosphate). The slide surfaces of the vane 20 and the roller 21 are formed with adsorbed films of TCP. Thereby it is possible to enhance the wear-resistance.

公开(公告)号：JPH07293476A

公开(公告)日：1995-11-07

申请号：JP8959094

申请日：1994-04-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04C29/02 ,  F04C18/356

Abstract: PURPOSE:To provide a compressor having high reliability by preventing large quantities of lubricating oil from being discharged to a cooling system in operating. CONSTITUTION:A rotary compressor is provided with a closed casing 1, lubricating oil 18, a discharging pipe 19 connected to the closed casing 1, and an oil separating pipe 20 wherein one end 20a is communicated with the discharging pipe 19, and the other end 20b is opened to the vertically lower part in the closed casing 1, and having a double structure composed of a labyrinth tube part 20e and an oil sump part 20f. Moreover, it is provided with an oil hole 21 provided on the vertically lower part of the labyrinth tube part 20e, and communicated with the oil sump part 20f of the oil separating pipe 20, and a check valve 22 attached on the other end 20b side of the oil sump part 20f of the oil separating pipe 20, and to be operated by the weight of lubricating oil.

公开(公告)号：JPH06288377A

公开(公告)日：1994-10-11

申请号：JP7782993

申请日：1993-04-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04C18/356 ,  F04C28/28 ,  F04C29/00 ,  F04C29/02 ,  F04C29/12

Abstract: PURPOSE:To prevent the reduction in efficiency caused by lubrication failure, and provide a highly reliable compressor by preventing the outflow of the lubricating oil in a cylinder at operation start and during operation. CONSTITUTION:A rotary compressor is provided with a suction pipe inserted to a cylinder 4; an evaporation tank 19 inserted to the suction pipe; a shape memory alloy valve 20 provided on the suction pipe which has a MS point set lower than 0 deg.C; and an evaporation pipe 21 having one end inserted to the evaporation tank 19 and the other end inserted to the suction pipe.

公开(公告)号：JPH05126062A

公开(公告)日：1993-05-21

申请号：JP28843791

申请日：1991-11-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWAI HIDEKI ,  AWASHIMA HIROKI ,  KAWABATA JUNTA

IPC: F04C2/356 ,  F04C15/00

Abstract: PURPOSE:To constitute each bearing in liquid lubricant to be rotated high in speed and to be long in life, and thereby make a device stable in operation by pressing each ball bearing supporting the shaft of a displacement type compression machine section into the shaft with pressure and so on so as to be housed in wherein solid individual lubricants are filled in the inside of each bearing. CONSTITUTION:The carrier allows a shaft 20 to be rotated by a motor composed of the stator 3 and the rotor 4 of a displacement type compression machine section 1. A roller 6 which is incorporated into the eccentric section 20a of the shaft 20, is then eccentrically rotated while liquid refrigerant introduced in the inside of a cylinder from a pipe 11 is being compressed, so that refrigerant is discharged out of a port 10 to a pipe 12 through the inside of a case 2. In this case, the shaft 20 is supported by both a main and an auxiliary bearing 21 and 22 housing respective ball bearings 23 and 24. The respective ball bearings 23 and 24 are filled with respective solid individual lubricants 23e and 24e. By this constitution, the existence of the solid individual lubricants 23e and 24e around respective balls results in excellent lubrication as the respective balls (not shown) in the respective ball bearings 23 and 24 are rotated.

公开(公告)号：JP2002266757A

公开(公告)日：2002-09-18

申请号：JP2001068978

申请日：2001-03-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： HIRATSUKA SATOSHI ,  KAWABATA JUNTA

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To improve reliability by improving lubricating characteristics of a thrust bearing part in a hermetic compressor. SOLUTION: A rotating side magnet 30 is installed in a rotating body 16 comprising a rotor 3, a crankshaft 2, etc., and a fixed side magnet 31 is installed in a fixed part 19 comprising a journal bearing 10, a hermetic container 17, etc. A magnetic force acting between the rotating side magnet 30 and the fixed side magnet 31 is applied in the direction of floating the rotating body 16 by gravity, etc., so as to reduce a load applied on the thrust bearing part. The magnetic force eliminates abrasion powder from being caught near the bearing part to suppress abnormal abrasion caused by the abrasion powder, thereby enhancing the lubricating characteristics and improving the reliability.

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

IPC: F04B49/06 ,  F04B35/04

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.

公开(公告)号：JP2001165045A

公开(公告)日：2001-06-19

申请号：JP35131399

申请日：1999-12-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： KANESHIRO KENJI ,  KITA ICHIRO ,  UMEOKA IKUTOMO ,  KAWABATA JUNTA ,  YAGI AKIO ,  SUGIMOTO SHUHEI

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To attain low vibration and low noise by effectively reducing transmission of the vibration to a closed vessel from an elastic support member of spring or the like supporting a motor-driven compression element, relating to a hermetic motor-driven compressor used in a household refrigerator or the like. SOLUTION: At least three or more protrusion parts 19 having an almost circular section along a side surface part 18 of a lower shell 3 are provided in a corner part 17, in addition by arranging a spring 20 supporting a motor- driven compression element 15 in an inner side of the protrusion part 19, a vibration transmitted to a bottom surface part 16 through the spring 20 from the motor-driven compression element 15 is effectively reduced, reduction of noise generated by resonance of the bottom surface part 16 can be attained without enlarging a closed vessel 4.

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

IPC: C04B35/58 ,  C23C14/06 ,  C23C14/48 ,  F04B35/04 ,  F04B39/00

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：JP2001107859A

公开(公告)日：2001-04-17

申请号：JP28651699

申请日：1999-10-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To improve efficiency and reliability by changing a sliding material in a compressor and a pump used for a refrigerating cycle. SOLUTION: This compressor and pump comprise sliding parts consisting of a polyphenylene sulfide(PPS) simple substance. The coefficient of friction of a sliding part and sliding loss can be lowered, and also separation can be prevented since resin coating is not used, and thus reliability can be improved.