公开(公告)号：JPH01253578A

公开(公告)日：1989-10-09

申请号：JP8159588

申请日：1988-04-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU ,  TSUDA YOSHIYUKI

IPC: F04B39/06 ,  F04B39/12

Abstract: PURPOSE:To suppress the heat conduction quantity to the compressed gas in an intake pipe and improve the compression performance by constituting the double intake pipe directly guiding the gas to be compressed into a cylinder provided in a shell with an enclosed structure with an outer pipe and an inner pipe arranged with a gap between them. CONSTITUTION:A cylinder 7 storing a roller 6 rotated by a motor consisting of a stator 3 and a rotor 4 is provided in an enclosed shell 2. The gas to be compressed sucked through a double intake pipe 11 by the eccentric rotation of this roller 6 is compressed then discharged through a discharge pipe. The double intake pipe 11 is fitted to the enclosed shell 2 by welding and integrally constituted with an outer pipe 11a and an inner pipe 11b via a spacer 11c, a gap is secured between both pipes 11a and 11b by the spacer 11c. The heat conduction quantity to the compressed gas in the intake pipe 11 is thereby reduced, the density reduction or pressure increase of the compressed gas is prevented, the efficiency of a compressor is improved.

公开(公告)号：JPH01219368A

公开(公告)日：1989-09-01

申请号：JP4523788

申请日：1988-02-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUDA YOSHIYUKI ,  SAKAI TOSHIKAZU

IPC: F04B39/00

Abstract: PURPOSE:To aim at the abatement of a sliding loss by constituting one side of compressor frictional mechanism members with a metal material containing a large quantity of nonferroud metal constituent parts and the other side with a ferroud sintered material subjected to lead impregnating treatment, respectively. CONSTITUTION:A rotary compressor 7 is assembled with a roller 3 decentered to a shaft 2, and this roller 3 is rotated as coming into closely contact with an inner wall of a cylinder 8 and as pressing a tip curvature part of a vane 9. A ferrous sintered material subjected to lead impregnating treatment is used on this cylinder 8, and a cobalt radical alloy is used for the vane 9. In this connection, as a vane material, a metal material containing more than 15wt.% of at least one type of nonferrous metal such as W, Co, Mo, Cr or the like may used. In addition, as for a lead impregnating ratio of the ferrous sintered material, a range of 5wt.%-30wt.% is appropriate.

公开(公告)号：JPH01170773A

公开(公告)日：1989-07-05

申请号：JP33084387

申请日：1987-12-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUDA YOSHIYUKI ,  SAKAI TOSHIKAZU

IPC: F04B39/00 ,  F16C33/12 ,  F16C33/24

Abstract: PURPOSE:To decrease a coefficient of friction and to reduce sliding loss by forming one of friction mechanism members using ceramics or metal-group material coated with ceramics and forming the other thereof using iron-group sintered material impregnated with lead. CONSTITUTION:A rotary compressor 1 is constructed so that a roller 3 supported by a shaft 2 is rotated with eccentricity while being brought into close contact with the inner wall of a cylinder 8 and a fluid in a space partitioned by a vane 9 inserted in a vane groove 10 provided on a part of the cylinder 8, the forward end portion of which is brought into sliding contact with the outer peripheral surface of the roller 3, the roller 3 and the cylinder 8 is compressed by the eccentric rotation. In this case, the cylinder 8 as a friction mechanism member is formed by iron-group sintered material impregnated with lead. On the other hand, the vane 9 as a friction mechanism member is formed by ceramics or iron-group material, the surface of which is coated with ceramics. Thus, sliding lose especially between the vane 9 and the vane groove 10 can be reduced.

公开(公告)号：JPS63192991A

公开(公告)日：1988-08-10

申请号：JP2284787

申请日：1987-02-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU

IPC: F04D29/056 ,  F04D29/04 ,  F25D17/06

Abstract: PURPOSE:To prevent the lowering of the rotating speed of a shaft due to lowered temp. by eliminating a bearing formed with an oil impregnated felt and a sintered metal and supporting the shaft with an oilless bearing instead. CONSTITUTION:A shaft 3 is rotated by motors 1, 2, rotating a vane 7 to send air. In this case, the shaft 3 is supported by an oilless bearing 14 formed with carbon group sliding materials containing carbon and a 50wt.% or more of graphite, while lubrication is carried out by means of a solid lubricant contained in the oilless bearing 14. Thereby, the lowering of the rotating speed of a fan motor in a warehouse due to low temp. can be suppressed, settling the problems of reduction in air quantity and unfavorable starting, while attaining the reduction of input.

公开(公告)号：JPS63153282A

公开(公告)日：1988-06-25

申请号：JP29955286

申请日：1986-12-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI TOSHIKAZU

IPC: C23C18/50 ,  C23C18/36 ,  C23C18/52

Abstract: PURPOSE:To improve the wear resistance of a composite film formed by composite plating by heat treating the film made of an Ni-P alloy contg. dispersed silicon carbide particles at a specified temp. CONSTITUTION:The surface of a sliding member is subjected to composite plating to form a composite film consisting of an Ni-P alloy as a matrix and silicon carbide particles dispersed in the matrix. Heat treatment is then carried out at 470-530 deg.C. The pref. P content in the composite film is about 6-15wt%, the pref. particle size of the silicon carbide particles is about 0.1-2.0mum and the pref. amt. of the particles deposited is about 1-10%. By the composite plating, wear resistance comparable to or higher than that of a heat treated alloy steel material is obtd.