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：JPH0565888A

公开(公告)日：1993-03-19

申请号：JP22582291

申请日：1991-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： AWASHIMA HIROKI ,  KAWAI HIDEKI ,  KAWABATA JUNTA

IPC: F04C29/00 ,  F25B1/04

Abstract: PURPOSE:To provide a liquid refrigerant conveyer without using oil of serving as a lubricant, relating to the refrigerant conveyer for forcing a refrigerant circulated, in the case of a heat conveying cycle of an air conditioning equipment or the like. CONSTITUTION:In an oilless refrigerant conveyer, it is constituted of a shaft 5, roller 6 mounted to an eccentric part of the shaft 5, cylinder 7 of housing the roller 6, vane 13 housed in a groove of the cylinder 7 to bring a point end part of the vane into press contact with a periphery of the roller 6, main bearing 8 and a subbearing 9 for supporting the shaft 5 and bearing bushes 14, 15 of carbon ceramics compound material mounted on internal diametric parts of the main bearing 8 and the subbearing 9 and brought into sliding contact with the shaft 5.

公开(公告)号：JPH0565886A

公开(公告)日：1993-03-19

申请号：JP22582091

申请日：1991-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  KAWAI HIDEKI ,  AWASHIMA HIROKI

IPC: F04C18/356 ,  F04C29/00 ,  F04C29/02 ,  F25B1/04

Abstract: PURPOSE:To provide a liquid refrigerant conveyer at a high speed further with a long life, in the case of the liquid refrigerant conveyer utilized for a room cooling/heating device or the like. CONSTITUTION:A shaft system is constituted of a main bearing 21, first/second subbearings 22, 23, shaft 20 and a ball bearing housed in an opposite cylinder side of the main bearing 21 and the first subbearing 22 and in the second subbearing 23, sealed with grease of containing MoS2, to support the shaft.

公开(公告)号：JPH04350381A

公开(公告)日：1992-12-04

申请号：JP12433491

申请日：1991-05-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWAI HIDEKI ,  AWASHIMA HIROKI ,  KAWABATA JUNTA

IPC: F04C18/356 ,  F04C29/00

Abstract: PURPOSE:To provide a liquid refrigerant conveyor device of long life. CONSTITUTION:A shaft system is formed of a main bearing 21, an auxiliary bearing 22, a shaft 20, and ball bearings 23, 24 enclosed on the anti-cylinder side of the main and auxiliary bearings 21, 22 so as to support the shaft 20. The ball bearing is formed of an inner wheel 23a, an outer wheel 23d and sealant 23e, and the shaft 20 is provided with liquid escape grooves 25 at its contact face with ball bearings 23, 24.

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：JPH02267479A

公开(公告)日：1990-11-01

申请号：JP8889089

申请日：1989-04-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： NISHIHARA HIDETOSHI ,  KAWAI HIDEKI ,  IGUCHI HIDEKI

IPC: F25B41/04

Abstract: PURPOSE:To assure a sealing characteristic, perform a positive keeping of a distance between a high pressure side and a low pressure side and further enable a function of a power element to be carried out by a method wherein an end surface of a third valve seat is provided with an annular groove, an annular resilient seal ring of which part is projected from the end surface is pushed into the groove. CONSTITUTION:A third valve seat 22 to be opened or closed by a first leaf valve 13 is provided, an end surface of the first leaf valve 13 is formed with an annular groove 23 having a substantial U-shaped section, an annular resilient seal ring 24 is pushed into the annular groove 23 to have such a depth as one slightly projected from an end surface of the valve seat surface 22. Some fine dusts passed through a filter A25 and a filter B26 are absorbed under a resilient deformation of the resilient seal ring 24, so that a sealing characteristic of the third valve device is assured. During operation of a rotary compressor 2, refrigerant of high pressure and high temperature is stopped at a valve device 6 and a second valve device 7. third valve device 9 is not slightly influenced by some fine dusts during a freezing cycle and then a positive sealing between the high pressure and the low pressure is assured, resulting in that an expensive power element is eliminated.

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.