公开(公告)号：JPH10288181A

公开(公告)日：1998-10-27

申请号：JP9348297

申请日：1997-04-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  KAWASHIMA TAKAO

IPC: F04C29/00 ,  F04C18/356

Abstract: PROBLEM TO BE SOLVED: To improve abrasion resistance by determining the ratios of alumina ceramic, carbon and zirconia for specified ratios, respectively, in the composition ratio of powder composite material. SOLUTION: One of sliding members in a compression mechanism is made of cast iron and sintered materials. The other of the sliding members is made of a composite material of powder of alumina ceramic (Al2 O3 ) 78-84 wt.%, powder of carbon (C) 15-20 wt.% and powder of zirconia (ZrO2 ) 1-2 wt.%. The composite material of powder of alumina ceramic (Al2 O3 ), powder of carbon (C) and powder of zirconia (ZrO2 ) is made to have an action improving abrasion resistance by making the composite material have a composition ratio of alumina ceramics (Al2 O3 ) 78-84 wt.% carbon (C) 15-20 wt.% and zirconia (ZrO2 ) 1-2 wt.%.

公开(公告)号：JPH08284825A

公开(公告)日：1996-10-29

申请号：JP8385595

申请日：1995-04-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  KAWASHIMA TAKAO

IPC: F04C29/00 ,  F04B39/00

Abstract: PURPOSE: To provide a highly reliable rotary compressor used for a refrigerant cycle, etc., by surface-treating its slide material so as to improve the abrasion resistance of the material. CONSTITUTION: In a rotary compressor, one of sliding materials is made of cast iron, iron-group sintered material or aluminum composite material, and the other one is made of iron-group material in which a composed layer made of solely CrN crystal or a compound layer in which CrN crystal and Cr2 N crystal are mixed and there is the CrN crystal of 50% or more is provided on the front surface.

公开(公告)号：JPH07293469A

公开(公告)日：1995-11-07

申请号：JP8827994

申请日：1994-04-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04C29/02 ,  F04C18/356

Abstract: PURPOSE:To provide a compressor having high reliability by preventing deterioration of efficiency caused by defective oil supply and defective lubrication. CONSTITUTION:A rotary compressor is provided with a discharge pipe 19 connected to a closed casing, an oil tank 20 connected to the discharge pipe 19, an oil returning pipe 21 wherein one end 21a is connected to the oil tank and the other end is connected to an inlet pipe 14, and a valve 22 made of shape memory alloy provided on the oil returning pipe. Moreover, it is provided with a refrigerant tank 23 connected to the inlet pipe 14, a valve 24 made of shape memory alloy provided on the refrigerant tank 23, and a liquid returning pipe wherein one end 25a is connected to the refrigerant tank 23 and the other end 25b is connected to the inlet pipe 14.

公开(公告)号：JPH07259769A

公开(公告)日：1995-10-09

申请号：JP5029194

申请日：1994-03-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: F04C29/02 ,  F04C18/356 ,  F16K31/70

Abstract: PURPOSE:To prevent lowering of efficiency owing to defective lubrication and to improve reliability by a method wherein suction of a liquid refrigerant to a cylinder during the starting of operation is prevented from occurring and outflow of oil during the stop of operation is prevented from occurring, in a rotary type compressor used in a freezing cycle. CONSTITUTION:A rotary type compressor comprises a cylinder 4 contained in a closed casing 1; a vaporizing chamber 19 installed in the cylinder 4; a suction pipe 14 connected to the vaporizing chamber 19; a valve 20 of a Cu-Al- Ni shape memory alloy located between the vaporizing chamber 19 in the cylinder 4 and a compression chamber; main and auxiliary bearings 7 and 8 fixed to the two ends of the cylinder 4; and a guide pipe 12 fixed to the auxiliary bearing 8.

公开(公告)号：JPH06147163A

公开(公告)日：1994-05-27

申请号：JP29687392

申请日：1992-11-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA

IPC: C22C9/00 ,  F04C18/356 ,  F04C29/00 ,  F04C29/02

Abstract: PURPOSE:To enhance the reliability and prevent lowering of the volumetric efficiency and increasing sliding loss by connecting a suction pipe inserted into a cylinder with an oil feed pipe opened in lubrication oil and providing a valve made of shape memory alloy having a MS point for limiting an oil feed time, which is a specific temperature, in the connected part. CONSTITUTION:One end part of an oil feed pipe 14 is inserted in a suction pipe 14, and the other end part of the oil feed pipe 14 is opened in lubrication oil, and a valve 20 made of shape memory alloy is provided in the suction pipe 14. Further, one end part of an oil recovery pipe 23 is inserted in an oil tank 22 connected to a discharge pipe 21, and the other end part thereof is inserted in a closed casing 1, and a valve 24 made of shape memory alloy is provided in the oil recovery pipe 23. In this arrangement, the valves 20, 24 are made of shape memory alloy of Cu-Al-Ni group having an MS point set in a range of 60 to 100 deg.C. When the temperature of the valve 20 is closed so as to limit the oil feed time when the temperature in the closed casing is increased to the MS point while the valve 24 is opened so as to return oil isolated in the oil tank 22 into the closed casing 1 when the temperature in the closed casing 1 is decreased to the MS point.

公开(公告)号：JPH0565888A

公开(公告)日：1993-03-19

申请号：JP22582291

申请日：1991-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： AWASHIMA HIROKI ,  KAWAI HIDEKI ,  KAWABATA JUNTA

IPC: F04C29/00 ,  F25B1/04

Abstract: PURPOSE:To provide a liquid refrigerant conveyer without using oil of serving as a lubricant, relating to the refrigerant conveyer for forcing a refrigerant circulated, in the case of a heat conveying cycle of an air conditioning equipment or the like. CONSTITUTION:In an oilless refrigerant conveyer, it is constituted of a shaft 5, roller 6 mounted to an eccentric part of the shaft 5, cylinder 7 of housing the roller 6, vane 13 housed in a groove of the cylinder 7 to bring a point end part of the vane into press contact with a periphery of the roller 6, main bearing 8 and a subbearing 9 for supporting the shaft 5 and bearing bushes 14, 15 of carbon ceramics compound material mounted on internal diametric parts of the main bearing 8 and the subbearing 9 and brought into sliding contact with the shaft 5.

公开(公告)号：JPH0565886A

公开(公告)日：1993-03-19

申请号：JP22582091

申请日：1991-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  KAWAI HIDEKI ,  AWASHIMA HIROKI

IPC: F04C18/356 ,  F04C29/00 ,  F04C29/02 ,  F25B1/04

Abstract: PURPOSE:To provide a liquid refrigerant conveyer at a high speed further with a long life, in the case of the liquid refrigerant conveyer utilized for a room cooling/heating device or the like. CONSTITUTION:A shaft system is constituted of a main bearing 21, first/second subbearings 22, 23, shaft 20 and a ball bearing housed in an opposite cylinder side of the main bearing 21 and the first subbearing 22 and in the second subbearing 23, sealed with grease of containing MoS2, to support the shaft.

公开(公告)号：JPH04350381A

公开(公告)日：1992-12-04

申请号：JP12433491

申请日：1991-05-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWAI HIDEKI ,  AWASHIMA HIROKI ,  KAWABATA JUNTA

IPC: F04C18/356 ,  F04C29/00

Abstract: PURPOSE:To provide a liquid refrigerant conveyor device of long life. CONSTITUTION:A shaft system is formed of a main bearing 21, an auxiliary bearing 22, a shaft 20, and ball bearings 23, 24 enclosed on the anti-cylinder side of the main and auxiliary bearings 21, 22 so as to support the shaft 20. The ball bearing is formed of an inner wheel 23a, an outer wheel 23d and sealant 23e, and the shaft 20 is provided with liquid escape grooves 25 at its contact face with ball bearings 23, 24.

公开(公告)号：JP2002061573A

公开(公告)日：2002-02-28

申请号：JP2000247350

申请日：2000-08-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  MORITA ICHIRO

IPC: F04B39/00 ,  C22C1/08 ,  C22C9/06 ,  F04B35/04 ,  F04B39/02

Abstract: PROBLEM TO BE SOLVED: To provide a compressor and a pump used for a refrigerating cycle, etc., having improved efficiency and reliability by changing a sliding material. SOLUTION: The compressor and pump each comprise sliding parts of a copper(Cu)-Nickel(Ni) based porous sintered alloy, through which a gaseous refrigerant passes, preventing an increase in sliding loss and improving the efficiency.

公开(公告)号：JP2001165059A

公开(公告)日：2001-06-19

申请号：JP35131499

申请日：1999-12-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO ,  MORITA ICHIRO ,  KAWABATA JUNTA ,  KOBAYASHI MASANORI ,  INAGAKI KO ,  ISHIDA TAKANORI ,  HAYASHI AKIRA

IPC: F04B49/06

Abstract: PROBLEM TO BE SOLVED: To control the operating frequency to be agreed with the resonance frequency corresponding to change in the operational pressure condition to constantly execute the operation with the resonance frequency of high efficiency in a vibrating compressor used in a refrigerating cycle. SOLUTION: An operating frequency of a variable element 13 is controlled to a resonance frequency corresponding to the operating pressure condition detected by a temperature detecting part 24 by a frequency control means 25, even when the operating pressure condition is changed and the operating frequency of the variable element 13 is different from the resonance frequency, whereby providing the operation of high efficiency.