公开(公告)号：JPH02267385A

公开(公告)日：1990-11-01

申请号：JP8890289

申请日：1989-04-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： OTA TOSHIHIKO ,  KAWAI HIDEKI ,  SASANO HIROSHI ,  OZAKA MASAHIKO ,  OTORI HIDEKI

IPC: F04C29/12 ,  F04C29/00 ,  F04C29/04

Abstract: PURPOSE:To suppress the temperature of a suction pipe from being increased to increase volume efficiency of a compressor by forming the suction pipe, communicating to the low pressure chamber of a compression element, of a material with small heat conductivity, and applying the coating of an elastic and organic material to the communicating portion of the suction pipe. CONSTITUTION:A stator 2 and a rotor-side housing 3 are fixed in a closed container 1, and a crankshaft 5, at the one end of which a rotor 4 is fixed, is provided in the stator 2 in the same axis as a cylinder 6. Also, a roller 7 is mounted rotatably at the eccentric portion of the crankshaft 5, and a compression element 11 is composed of the roller, housings 3 and 8 choking both end surfaces of the cylinder 6, and a vane 10 separating a compression chamber 9 by coming in contact with the outer periphery of the roller 7. In this case, a suction pipe 16 is formed of material with small heat conductivity such as stainless steel, etc., and the one end of it is pressed into the communicating hole 13 of the housing 8 at a position opposite to the rotor. The pressed-in portion of the suction pipe 16 is coated with an elastic and organic material 16a such as Teflon, etc.

公开(公告)号：JPH02173387A

公开(公告)日：1990-07-04

申请号：JP32664988

申请日：1988-12-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： SASANO HIROSHI ,  KAWAI HIDEKI ,  OTA TOSHIHIKO ,  OZAKA MASAHIKO

IPC: F04C29/02 ,  F04C29/06

Abstract: PURPOSE:To seal a differential pressure, to reduce production of a strain on an auxiliary bearing, and to increase a possible load on the auxiliary bearing without damaging an oil feed function by a method wherein an O-ring is forced into pressure contact with a space between the inner surface of the cylindrical shape of a delivery cover and the outer surface of the cylinder part of the auxiliary bearing. CONSTITUTION:A differential pressure between the interior of a delivery cover 19 and that of a closed container 1 is sealed by forcing an O-ring 26 into pressure contact with a space between an inner surface 23 of a cylindrical shape 18 of the delivery cover 19 and an annular groove 27 formed in an outer surface 24 of a cylinder part 14 of an auxiliary bearing 15A. This constitution prevents the damage of the function of a lubrication pump 20 to feed oil to a shaft 8 through rotation of a coil spring 21, and enables regulation of concentric displacement between an oil pipe 22 and the shaft 8. Further, resiliency of the O-ring 26 reduces strain on the auxiliary bearing 15A, and enables the increase of a substantial bearing length J of the auxiliary bearing 15A.

公开(公告)号：JPH0227188A

公开(公告)日：1990-01-29

申请号：JP17783788

申请日：1988-07-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： SASANO HIROSHI ,  KAWAI HIDEKI ,  OTA TOSHIHIKO ,  OZAKA MASAHIKO

IPC: F04C29/00

Abstract: PURPOSE:To enlarge the outer diameter of a stator and prevent the lowering of the motor efficiency by making the stator fixed side of a case shell to have the concentric shaft with the machine part fixed side and an enlarged diameter. CONSTITUTION:The stator 12 side of a case shell 11 is made to have the concentric shaft with the machine part 5 side and is given an enlarged diameter. The stator 12 is shrinkage-fit to the case shell 11. Consequently, it can correspond without lowering of the motor efficiency to the increase of the necessary torque by expanding of the range of the kinds, and the raising of the laminated thickness of a rotor 9 is eliminated so that the noise by whirling of a crank 10 can be restricted.