公开(公告)号：JP2002332966A

公开(公告)日：2002-11-22

申请号：JP2001136032

申请日：2001-05-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： MOTEGI MANABU ,  OTA TOSHIHIKO ,  NISHIHARA HIDETOSHI ,  KUBOTA AKIHIKO ,  OZAKA MASAHIKO

IPC: F04B39/02

Abstract: PROBLEM TO BE SOLVED: To reduce elements for fixing an oil capillary and steps of assembling. SOLUTION: An insertion groove having groove width smaller than the diameter of the oil capillary at an entrance and larger than the diameter of the oil capillary at the inside portion is integrally provided with an suction muffler. The oil capillary having a spring property is inserted and locked in the insertion groove. Fixing of the oil capillary is changed from bolt fixing by steel strip band and a bolt to lock fixing direct to the suction muffler.

公开(公告)号：JP2001342958A

公开(公告)日：2001-12-14

申请号：JP2000159868

申请日：2000-05-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： NOGUCHI KAZUHITO ,  KUBOTA AKIHIKO ,  OZAKA MASAHIKO ,  MOTEGI MANABU ,  NISHIHARA HIDETOSHI

IPC: F04B39/02

Abstract: PROBLEM TO BE SOLVED: To lower the noise and to secure the supply of the refrigerating machine oil to a sliding part as a compressing element in a sealed compressor to be mounted on an electric refrigerator. SOLUTION: An oil supply tube 5 inserted into a lower tip of a crank shaft 4 is formed of a first centrifugal pump part 5a and a second centrifugal pump part 5b continued to a lower part of the first centrifugal pump part 5a and formed with an angle smaller than that of the first centrifugal pump part 5a. The only second centrifugal pump part 5b having a smaller angle is rotated in the refrigerating machine oil. With this structure, agitation of the refrigerating machine oil is reduced so as to lower the generation of noise.

公开(公告)号：JPH05141359A

公开(公告)日：1993-06-08

申请号：JP30160991

申请日：1991-11-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  KAWAI HIDEKI ,  SAEKI YUJI ,  WADA SATOSHI ,  OZAKA MASAHIKO

IPC: F04B39/00 ,  F04B39/14

Abstract: PURPOSE:To provide a compressor wherein a connecting rod not needing a man power required for its assembly is provided and excellent assembly workability with which response to change of the kind of a device is facilitated through replacement of a large end part is provided. CONSTITUTION:A crank shaft 20 is provided with shaft parts 20a and 20b and an eccentric part 21 is securely pressed therein. A connecting rod 22 comprises three parts consisting of a large end part, a small end part, and a connecting part and the three parts are fixed by electric welding. The one end is fitted in the eccentric part 21 and the other end is coupled to a piston 12.

公开(公告)号：JPH0599149A

公开(公告)日：1993-04-20

申请号：JP25339491

申请日：1991-10-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  KAWAI HIDEKI ,  SAEKI YUJI ,  WADA SATOSHI

IPC: F04B39/00 ,  F04B39/10

Abstract: PURPOSE:To provide a valve device which damps an exciting force and collision noise generated owing to collision with a suction valve seat and a delivery valve seat during opening and closing of a suction reed valve and a delivery reed valve by means of a buffering material and reduces the generation of noise of a compressor, in a valve device for a compressor used in the refrigerating cycle of an air-conditioner and a freezer. CONSTITUTION:A valve device comprises a plate 31 formed on a plate and a buffering material 32 formed of fluororesin which is brought into close contact with the plate 31 during closing of a delivery reed valve 9 and with which the end surface part of the plate 3 is coated.

公开(公告)号：JPH04311688A

公开(公告)日：1992-11-04

申请号：JP7920191

申请日：1991-04-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  KAWAI HIDEKI ,  OZAKA MASAHIKO

IPC: F04B39/00

Abstract: PURPOSE:To improve the life and reliability of ball bearings in the case of using the ball bearings and facilitate assembling work performance concerning the high efficiency of a closed-type motor-driven compressor used for a refrigerator or the like. CONSTITUTION:There are provided a crankshaft 21, ball bearings 22, 23 disposed with a rotor 5 held in between, and a cover 24 with the ball bearing 23 fitted thereto with play to form a closed-type motor-driven compressor.

公开(公告)号：JPH04237887A

公开(公告)日：1992-08-26

申请号：JP559491

申请日：1991-01-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  KAWAI HIDEKI ,  OZAKA MASAHIKO

IPC: F04B39/00 ,  F04B39/14

Abstract: PURPOSE:To facilitate a job for assembly operability and working properties by improving the life and reliability of a ball bearing in the case where it is used, while promoting the stabilization of motor efficiency, and assembling a connecting rod without splitting it, in such a case pertaining to the promotion of efficiency in an enclosed motor compressor available for a refrigerator, etc. CONSTITUTION:This compressor consists of a crank journal 20, an eccentric shaft 21, a ball bearing 24 installed more at the opposite side of a motor element 2 than at the axis of a cylinder 13 and on the same axial center as a shaft center of the crank journal 20, a spacer 25 pressed in an inner ring of the ball bearing 24 and an eccentric hole 26 installed in this spacer 25.

公开(公告)号：JPH03100393A

公开(公告)日：1991-04-25

申请号：JP23782889

申请日：1989-09-13

Applicant: MATSUSHITA REFRIGERATION ,  MATSUSHITA ELECTRIC IND CO LTD

Inventor： ARIMIZU KOJI ,  KAWAI HIDEKI ,  NISHIHARA HIDETOSHI ,  OZAKA MASAHIKO ,  SAEKI YUJI ,  MATSUO KOJIRO ,  YAGI JUN

IPC: F04C18/356

Abstract: PURPOSE:To improve both reliability and performance of a rotary compressor by constituting at least one of the vane and roller of a whisker reinforced metal composite material compositely reinforced by ZnO whiskers. CONSTITUTION:Both members of a roller 10 and vane 11 are constituted of a whisker reinforced metal composite material compositely reinforced with ZnO whiskers. The ZnO whiskers 15 of composite reinforcement are tetrapod- shaped single crystals. Metals applied to a matrix and alloys of aluminum, magnesium, titanium, etc. The ZnO whisker reinforced composite metal improves remarkably the mechanical strength and antiwear property with the uniform dispersion of ZnO whiskers in addition to the proper lightness of aluminum alloy, while providing the same coefficient of linear expansion as that of cast iron. Further, since the ZnO whisker is the wedge-shaped and tetrapod-like single crystal, the structure after press casting and solidification becomes one uniform in the three dimensional directions so that phenomena such as abnormal wear and defective slide accompanying the component segregation do not take place.

公开(公告)号：JPH02267384A

公开(公告)日：1990-11-01

申请号：JP8890189

申请日：1989-04-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  KAWAI HIDEKI ,  SASANO HIROSHI ,  OTA TOSHIHIKO ,  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 a cupper plating to the refrigerating system side top end 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 coming in contact with the outer periphery of the roller 7. In this case, a suction pipe 16 is formed of a 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 refrigerating system side top end 16a of the closed container 1 is plated with cupper.

公开(公告)号：JPH02173383A

公开(公告)日：1990-07-04

申请号：JP32664388

申请日：1988-12-23

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04C18/356

Abstract: PURPOSE:To increase the area of an opening to a low pressure chamber to a value higher than the sectional area of a communicating groove, to reduce incurring of the pressure loss of a refrigerant, to increase a real cylinder volume, and to improve freezing capacity by a method wherein a communicating groove for intercommunicating an opening hole and a compression chamber forms a structure in which the communication groove is inclined in the direction of a vane based on the center of a shaft. CONSTITUTION:An opening hole 50 is formed in a cylinder 9 on the extension of a suction pipe, and a communicating groove 51 for intercommunicating the opening hole 50 and a low pressure chamber 9a is formed. A refrigerant sucked through an opening hole 50 by rolling of a roller 10 flows through the intercommunicating groove 51, and is guided to the low pressure chamber 9a for continuous compression. Thus, since, when a refrigerant passes through the communicating groove 51, width W2 of an opening to the low pressure chamber 9a is increased to a value higher than width W1 of the communicating groove 51, incurring of a pressure loss is reduced. Further, since the communicating groove 51 is inclined in the direction of a vane 11 based on the center of a shaft 7, a compressor which is reduced in a compression starting angle thetas and increased in a real cylinder volume and high in freezing capacity is provided.

公开(公告)号：JP2002161855A

公开(公告)日：2002-06-07

申请号：JP2000359012

申请日：2000-11-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  NISHIHARA HIDETOSHI ,  OTA TOSHIHIKO ,  KUBOTA AKIHIKO ,  MOTEGI MANABU ,  AWASHIMA HIROKI ,  KOJIMA TAKESHI ,  NOGUCHI KAZUHITO ,  KITA ICHIRO ,  SUMIYA MASAHIRO

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To provide a hermetic compressor in a freezing and refrigerating device and an air conditioning system such as a refrigerator and a show case capable of reducing noise by damping pressure pulsation generated in a compression chamber by an absorption muffler effectively. SOLUTION: Since a muffler cover 20 has a simple shape like a flat plate, its deformation when it is molded is reduced, and it adheres to a muffler main body 19 sufficiently and closely. Consequently, pressure pulsation scarcely leaks from a connection part of the muffler main body 19 and the muffler cover 20 to provide silencing effect that the absorption muffler 18 has sufficiently so as to reduce noise effectively.