公开(公告)号：JPH11311244A

公开(公告)日：1999-11-09

申请号：JP11835798

申请日：1998-04-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： HIRATSUKA SATOSHI ,  ISHIDA TAKANORI ,  SAKAI TOSHIKAZU ,  SASABE SHIGERU ,  NOZUE AKIHIRO

IPC: F04B39/00 ,  F16C17/04 ,  F16C33/10

Abstract: PROBLEM TO BE SOLVED: To provide a compressor provided with bearing structure preventing the wear of a thrust sliding face when the internal temperature of the compressor is high and reducing sliding loss of a thrust sliding face when the internal temperature of the compressor is low. SOLUTION: A thrust washer 30 of such structure that contact area decreases with the drop of internal temperature of a compressor and that contact area increases with the rise of internal temperature of the compressor is provided between a flange face 20 and a thrust face 21. With this constitution, the viscosity of refrigerator oil is lowered by the rise of internal temperature of the compressor, and in the case of a thrust sliding face being in a boundary lubricating area from mixing, the contact area increases, so that load per unit area decreases, and an oil film is easily formed to prevent wear. When the viscosity of refrigerator oil is heightened by the drop of internal temperature of the compressor, and in the case of the thrust sliding part being in a fluid lubricating area, the contact area decreases, so that load per unit area increases to reduce sliding loss.

公开(公告)号：JPH11304261A

公开(公告)日：1999-11-05

申请号：JP11467498

申请日：1998-04-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： ISHIDA TAKANORI ,  HIRATSUKA SATOSHI ,  SAKAI TOSHIKAZU ,  SASABE SHIGERU ,  NOZUE AKIHIRO

IPC: F25D11/00 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To improve the reliability of a freezer/refrigerator by preventing the occurrence of foaming in a compressor, namely, the discharge of a lubricant to the outside of the compressor by the foaming particularly when the power supply is made and, at the same time, to prevent the durability deterioration of the compressor due to lubricant deficiency in the compressor. SOLUTION: A freezer/refrigerator is provided with an intra-freezer temperature detecting means 2 which detects the temperature in the freezer of the freezer/refrigerator, a heating means 4 which is positioned to heat a lubricant 19 melted by means of a refrigerant in the bottom section of a compressor 1, and a control means 3 which controls the heating means 14 to secure a required amount of lubricant in the compressor 1 based on the temperature in the freezer detected by means of the detecting means 2. Consequently, the reliability of the freezer/refrigerator can be improved, because the discharge of the lubricant 19 to the outside from the compressor 1 by foaming can be reduced and the required amount of lubricant 19 can be secured in the compressor 1.

公开(公告)号：JPH1182304A

公开(公告)日：1999-03-26

申请号：JP24807497

申请日：1997-09-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： ISHIDA TAKANORI ,  SAKAI TOSHIKAZU ,  SASABE SHIGERU ,  NOZUE AKIHIRO ,  HIRATSUKA SATOSHI

IPC: F04B39/02 ,  C10M169/04 ,  C10N10/12 ,  C10N40/30 ,  F04C29/02

Abstract: PROBLEM TO BE SOLVED: To provide a reliable refrigerant compressor by optimizing an assembly lubricant used at the time of the assembly of the refrigerant compressor so as to prevent the sliding parts in the refrigerant compressor from being initially worn at the start of the compressor and by suppressing the starting failure of the refrigerant compressor and the occurrence of substances clogging a cooling system. SOLUTION: A refrigerant compressor is structured so that 50 capacity % distillation temperature is 400 deg.C or higher and it uses a synthetic fluid base oil having an ether or carbonate structure in its molecules as an assembly lubricant. In this case, it is better to use the assembly lubricant containing at least one or more organic phosphoric acid compounds of 0.01 to 1.0 wt.% between acid phosphoric acid ester and phosphorous acid ester. Thus the initial wear inside a refrigerant compressor at the start of the compressor can be prevented, and the starting failure and the occurrence of substances clogging a cooling system can be suppressed.

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：JPH11101529A

公开(公告)日：1999-04-13

申请号：JP26319897

申请日：1997-09-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： HIRATSUKA SATOSHI ,  SAKAI TOSHIKAZU

IPC: F25B31/00

Abstract: PROBLEM TO BE SOLVED: To provide a compressor for replacement which does not depend on a bad influence due to the hydrolysis of refrigerating machine oil to a cooling system or the influence of detergent for a piping including chlorine when the compressor of the cooling system is replaced by a new one and repaired in the cooling system which uses the compressor, a refrigerant composed of hydrocarbon fluoride and ester synthetic oil. SOLUTION: In a compressor 1 for replacement, refrigerating machine oil composed of ether synthetic oil or carbonate synthetic oil 12 is previously sealed. A bad influence to a cooling system such as the clogging of a capillary due to sludge generated by the hydrolysis of the refrigerating machine oil is prevented, so that the durability of the cooling system can be improved. Detergent including chlorine high in its cleaning effect is used for cleaning a piping so that operating time can be decreased.