公开(公告)号：JPH1047248A

公开(公告)日：1998-02-17

申请号：JP20159696

申请日：1996-07-31

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  MOTEGI MANABU

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To prevent generation of a burr in a part except for a welding projection by arranging the welding projection in one of opposed flanges or edge parts and a groove in at least either one of opposed surfaces of the flanges or the edge parts in a synthetic resin-made muffler to which two apparatus bodies are joined by ultrasonic welding. SOLUTION: In a synthetic resin-made muffler to which three apparatus bodies 10 to 12 are joined by ultrasonic welding in order to introduce refrigerant gas into a cylinder of an enclosed motor-driven compressor, the first to the third apparatus bodies 10 to 12 are respectively molded by injection molding of polybutylene terephthalate. In this case, a welding projection 14 and a groove 15 are arranged on a flange 13 arranged on the first apparatus body 10, and the second apparatus body 11 is almost similarly formed, and the welding projection 14 of the first apparatus body 10 and an edge part 16 of the second apparatus body 11 are melted and fixed together, but a burr generated at this time is gathered in the groove 15. According to this, a burr generated when the synthetic resin-made suction muffler is joined by ultrasonic welding can be prevented from appearing to the inside and outside of the suction muffler.

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：JPH0599148A

公开(公告)日：1993-04-20

申请号：JP25339291

申请日：1991-10-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  WADA SATOSHI ,  ONO TAKESHI

IPC: F04B39/02

Abstract: PURPOSE:To further increase efficiency, in a closed type motor-operated compressor used in a refrigerator. CONSTITUTION:A ball bearing 25 pivotally supporting a crankshaft 24 is provided and an oil discharge hole 27 of the crankshaft is formed. Further, an oil stopper 29 situated to a crank eccentric part 27 is provided and the oil stopper 29 is disposed facing the oil delivery hole 27. This constitution causes foggy oil 33a to fall on a rolling part.

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：JPH0472476A

公开(公告)日：1992-03-06

申请号：JP18644790

申请日：1990-07-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMADA TOSHIHIRO ,  WADA SATOSHI

IPC: F04B39/00

Abstract: PURPOSE:To reduce noise generated by movement by inertial force by fixing the end part of a coil spring for supporting a compressor body elastically in a casing in such a way as to intrude into a gap formed at the root part of a snubber part. CONSTITUTION:In an internal supporting device 3 for supporting a compressor body 2 elastically in a casing 1, the column diameter of the root part 34a of a snubber part 34 is made smaller than that of a base part 34b and also smaller than the diameter of the end part 35b, to be fixed to the seat part 32 and the snubber part 34, of a coil spring 35, the column height of the root part 34a is made smaller than the wire diameter of the coil spring 35, and the column diameter is made larger than the inner diameter of the end part 35b. Interference fit is then performed at the edge of the base part 34b on the root part 34a side. The end part 35b is thereby held between the seat part 32 and the edge of the base part 34b and fixed in such a way as to intrude into a gap formed at the root part 34a. The end part 35b of the coil spring 35 is therefore prevented from moving, and thus collision sound with the seat part 32 and rubbing sound with the snubber part 34 are not generated.

公开(公告)号：JPH11351144A

公开(公告)日：1999-12-21

申请号：JP16101198

申请日：1998-06-09

Applicant: MATSUSHITA ELECTRIC IND CO LTD ,  MATSUSHITA REFRIGERATION

Inventor： KONISHI YASUFUMI ,  ASAIDA YASUHIRO ,  FUJIWARA NORIYUKI ,  WADA SATOSHI ,  HANEDA AKIRA ,  ONO TAKESHI

IPC: F01N1/02 ,  F04B39/00

Abstract: PROBLEM TO BE SOLVED: To provide a muffler for a compressor capable of improving the efficiency of the compressor by reducing pressure resistance in a cooling medium passage, while maintaining silencing effect. SOLUTION: A muffler for a compressor includes a first noise silencing room 1 connected to a piston via a communication pipe 4 and a second silencing room 2 partitioned from the first silencing room 1 into upper and lower parts with a partition plate 5, an entrance 7 provided at the side of a nearly boundary position between the first silencing room 1 and the second silencing room 2, a cooling medium passage 3 bent after moving straight a given distance from the entrance 7 and ranging to an exit, the exit 8 communicating with the first silencing room 1, and a silencing hole 6 provided on the way of the straight portion 10 of the cooling medium passage 3 and communicating with the second silencing room 2, wherein the bent portion 11 of the cooling medium passage 3 is curved to communicate with the first silencing room 1.

公开(公告)号：JPH06235569A

公开(公告)日：1994-08-23

申请号：JP2233293

申请日：1993-02-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  NAKAOKA SEISHI ,  YAKUSHI SHUICHI ,  ITO SHINYA ,  KAWASHIMA TAKAO ,  WADA SATOSHI ,  KAWAI HIDEKI

IPC: F04B39/16 ,  F04C29/00 ,  F04C29/12 ,  F25B43/00

Abstract: PURPOSE:To obtain a refrigerating plant and a refrigerant compressor which use 134a as a fluorocarbon refrigerant, are charged with lubricating oil containing esther as the main component, and has such a constitution that a decline in cooling capacity due to the blockage of a capillary tube caused by a contamination does not occur. CONSTITUTION:A filter made of a porous sintered metal has a void of 80mum or smaller and is inserted into a dryer of a refrigerating plant. Filters 62 and 74 made of a porous sintered metal have a void of 80mum or smaller and are attached on refrigerant flow paths in a closed vessel 6 of a refrigerant compressor.

公开(公告)号：JPH06117374A

公开(公告)日：1994-04-26

申请号：JP26453792

申请日：1992-10-02

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B39/00 ,  F04B39/14

Abstract: PURPOSE:To prevent the deterioration of reliability and reduce dimension by carrying out assembly of a compressor in the state where a rolling bearing is assembled on a crankshaft, when the rolling bearing is used, in order to improve the assembly workability of a sealed type motor-driven compressor used for a refrigerator, etc. CONSTITUTION:A sealed type motor-driven compressor is constituted of a body 15a, piston 16 connected with one edge of the body 15a, cylinder 22, and a cut part 25 formed on the cylinder 22 into which the body 15a is insertion-fitted.