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：JPH07145788A

公开(公告)日：1995-06-06

申请号：JP29515893

申请日：1993-11-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU ,  TAKAICHI KENJI ,  TADA KOJI ,  ISHIDA TAKANORI

IPC: F04C18/356

Abstract: PURPOSE:To improve surface hardness and the close sticking quality of a ceramic coating layer and the durability of a compressor by using a vane strengthened by means of a complex film consisting of the ceramic coating layer and a nitrogen ion injection layer underneath it. CONSTITUTION:A compressor 1 compresses the gas in a cylinder 4 by rotating a roller 6 fitted to the eccentric portion of a shaft 2 to be subjected to motor rotation while the roller 6 is coming into contact with the inner periphery of the cylinder 4 and the tip of a vane 7. In this instance, the vane 7 is formed of what is a base material that consists of alloy steel or a sintered material of an iron system and is injected with nitrogen ion, and then on whose tip portion surface the ceramic coating of nitrified chrome is administered. Or formation is carried out of what is a base material that consists of alloy steel or a sintered material of an iron system and is injected with chrome ion and then on whose tip portion surface the ceramic coating of nitrified chrome is a deministered. As a result, the improvement of surface hardness and the close sticking quality of the ceramic coating layer is realized.

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

IPC: F04C18/02 ,  F01C17/06

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.

公开(公告)号：JPH06156627A

公开(公告)日：1994-06-03

申请号：JP31681392

申请日：1992-11-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： TADA KOJI ,  IMANISHI MORIHIRO ,  MITSUMATA MITSUGI ,  TANAKA TOSHIYUKI

IPC: B65G1/04

Abstract: PURPOSE:To shorten the depth dimension of an article storing device. CONSTITUTION:An article storing device is composed of a pallet 19 for mounting an article to be received, a pallet receiving shelf 20 where plural steps to support the pallet are vertically provided and the taken out pallet 19 is received on the first step, an ascending and descending body 26 being shorter than the depth of the pallet 19, and pallet supporting-carrying members 28 whose right and left units are respectively and independently guided.

公开(公告)号：JPH07180660A

公开(公告)日：1995-07-18

申请号：JP32850893

申请日：1993-12-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： TADA KOJI ,  TAKAICHI KENJI ,  SAKAI TOSHIKAZU ,  ISHIDA TAKANORI

IPC: F04B39/00

Abstract: PURPOSE:To optimize sliding material in a compressor using refrigerant HFC-134a so as to heighten durability by forming a connecting rod of an aluminium alloy casting, and casting a metal foam body, made of a nickel chrome alloy with specific porosity, in a bearing part for a piston. CONSTITUTION:In a compressor using refrigerant 1, 1, 1, 2-tetrafluoroethane (HFC-134a), not including chlorine in a molecule, as compressed gas for a problem such as the destruction of an ozone layer, the other end of a connecting rod 5 with one end thereof rotatably supported to the shaft 2 of a motor is supported by a piston pin 8 as a bearing, and a piston 7 fixed to the piston pin 8 is fittingly mounted into a cylinder 6. In this case, the connecting rod 5 is formed of a aluminium alloy casting, and a metal foam body made of a nickel chrome alloy of 80-98% in porosity is cast in a bearing part for the piston pin 8. The hardness of a connecting rod bearing part is thereby improved, and the quantity of friction in the contact parts of the connecting rod 5 and piston pin 8 is reduced.

公开(公告)号：JPH07145787A

公开(公告)日：1995-06-06

申请号：JP29516093

申请日：1993-11-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU ,  TAKAICHI KENJI ,  TADA KOJI ,  ISHIDA TAKANORI

IPC: F04C18/356

Abstract: PURPOSE:To improve the durability of a compressor by strengthening a vane tip portion by means of a complex hardening film consisting of a ceramic coating layer and a nitrification treatment layer underneath it, bringing this into slide contact with the outer periphery of a roller formed of high alloy steel or the like, and preventing the wear of both. CONSTITUTION:A compressor 1 compresses the gas in a cylinder 4 by rotating a roller 6 fitted to the eccentric portion of a shaft 2 to be subjected to motor rotation while the roller 6 is coming into contact with the inner periphery of a cylinder 4 and the tip of a vane 7. In this case, the roller 6 is formed of alloy steel whose surface hardness shows the value of HV800-2000 and which contains vanadium, chrome, molybdenum and tungsten, or carbon steel or the like on whose surface a nickel phosphorus compound plating layer containing carbonized silicon corpuscles is formed. Meanwhile, the vane 7 is made of a sintered material of an iron system or alloy steel containing chrome, and nitrification treatment is administered at the tip portion, and a chemical compound layer of iron, chrome and nitrogen is formed, and then formation is carried out by administering the ceramic coating of nitrified chrome on the tip portion surface alone.