公开(公告)号：JPH04124489A

公开(公告)日：1992-04-24

申请号：JP24559790

申请日：1990-09-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： OTA TOSHIHIKO ,  NISHIHARA HIDETOSHI ,  MATSUMOTO TAKESHI

IPC: F04C18/344

Abstract: PURPOSE:To obtain a highly reliable compressor with less abrasion by forming the vane side tip of a spring into approximately spherical shape, and bringing this spherical part into contact with the bottom part of a vane hole so that the spring presses the vane only in the axial direction of a shaft and in the right-angled direction to the shaft, thereby dissolving pinching at the vane tip. CONSTITUTION:When a shaft 4 is rotated by the rotation of a rotor 3 so as to compress refrigerant in a compression chamber formed by a piston 8, a cylinder 6 and a vane 11, the vane 11 is reciprocated following the rotation of the shaft 4 by a spring 13 pressing the vane 11. In this case, the tip 16 of the spring 13 is in approximately spherical shape, and the vane 11 is not pressed by the curve part 14 of the spring 13 but the bottom part 15 of a vane hole is pressed by this spherical part, so that the vane is not pressed obliquely, nor is the end face of a main bearing 8 chipped by the vane tip. The vane tip and the main bearing end face are thereby prevented from abrasion and seizure, and thus a compressor of high reliability can be obtained.

公开(公告)号：JPH03258988A

公开(公告)日：1991-11-19

申请号：JP5527690

申请日：1990-03-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： NISHIHARA HIDETOSHI ,  OTA TOSHIHIKO ,  OZAKA MASAHIKO ,  MATSUMOTO TAKESHI

IPC: F04C23/02 ,  F04C29/00

Abstract: PURPOSE:To reduce the sliding loss of a crankshaft and obtain a higher effi ciency by providing an axial direction hole off-center in the axial direction of an eccentric part to the axis of a main shaft part, near the eccentric part of the main shaft. CONSTITUTION:A crankshaft 13 is formed of an eccentric part 14 and a main shaft part 15. An axial directional hole 16 off-center in the axial direction of the eccentric part 14 to the axis of the main shaft part 15 is provided near the eccentric part 14 of the main shaft 15. The unbalance component generated by centrifugal force from the eccentric part 14 and a roller 6 is reduced by the opposite directional force generated by the hole 16 off-center in the eccentric part 14 axial direction. As a main weight and a sub-weight can be lightened, the bending moment acting on the crankshaft 13 is reduced, and the diameter of the main shaft part 15 can be reduced. Hence, the sliding loss of the crank shaft is reduced to obtain a higher efficiency.

公开(公告)号：JPH03258984A

公开(公告)日：1991-11-19

申请号：JP5528290

申请日：1990-03-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  KAWAI HIDEKI ,  NISHIHARA HIDETOSHI ,  OTA TOSHIHIKO ,  MATSUMOTO TAKESHI

IPC: F04C11/00 ,  F04C23/00

Abstract: PURPOSE:To enhance the miniaturization and reduction in noise by conforming the discharge directions to release the discharge flows from first and second compression chambers into a single muffler. CONSTITUTION:A first cylinder 31 forms a first compression chamber 29 together with a rotor 3 side housing 27 and a first intermediate plate 28, and has a first communicating hole 33 for guiding discharge flow to a muffler 32. A second cylinder 40 forms a second compression chamber together with a second intermedinate plate 34 and an anti-rotor 3 side housing 36. The discharge directions are conformed to each other to release the discharge flows from the first and second compression chambers 29, 37 into the single muffler 32. Hence, miniaturization can be enhanced while holding a sufficient muffler capacity. The pulsation component contained in the discharge flow can be smoothed to reduce noise.

公开(公告)号：JP2002130132A

公开(公告)日：2002-05-09

申请号：JP2000330311

申请日：2000-10-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： UMEOKA IKUTOMO ,  KITA ICHIRO ,  YAGI AKIO ,  KANESHIRO KENJI ,  MATSUMOTO TAKESHI ,  HAYASHI YASUSHI ,  MARUYAMA TOMIO

IPC: F04B39/12

Abstract: PROBLEM TO BE SOLVED: To reduce the noises of a closed type motor-driven compressor for use in a household refrigerator or the like by reducing the vibration of the closing case of the compressor. SOLUTION: The closing case 2 formed of a plurality of curved surfaces for storing a motor-driven compressing element 8 includes a different curved surface 23 formed on the ridge 21 of the curved surface 22 to divide the resonance peak of the curved surface 22 and reduce a resonance peak level so as to reduce the vibration of the closing case 2 and the noises of the compressor.

公开(公告)号：JP2001336843A

公开(公告)日：2001-12-07

申请号：JP2000159866

申请日：2000-05-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： MATSUMOTO TAKESHI ,  SUGIYAMA JUNICHI ,  IWATA HIROMITSU

IPC: G07F9/10 ,  F25B5/00 ,  F25B5/02 ,  F25D11/00

Abstract: PROBLEM TO BE SOLVED: To contrive to provide a cooling system for a vending machine suppressing an extreme fall and sudden fluctuation in evaporative temperature (evaporative pressure) and having enhanced system efficiency and reliability in the cooling system for the vending machine with a multi-evaporation system cooling many chambers by one condensing unit. SOLUTION: This system is provided with a compressor 12, a condenser 2, a plurality of evaporators 5-1, 5-2, a plurality of expanders 11-1, 11-2 connected with the evaporators and switches 10-1, 10-2 opening and closing a plurality of the evaporators 5-1, 5-2 respectively. The compressor 12 is an inverter compressor having an operating frequency converting means 13, and thereby the suction capacity of the compressor 12 is changed according to the required quantity of refrigerant circulation so as to suppress an extreme fall and sudden fluctuation in evaporative temperature (evaporative pressure).

公开(公告)号：JPH11303782A

公开(公告)日：1999-11-02

申请号：JP10910998

申请日：1998-04-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： MATSUMOTO TAKESHI ,  IIDA KEIZO ,  SUGIYAMA JUNICHI ,  KOMORI HIROYUKI

IPC: F04C29/12 ,  F04C18/356 ,  F04C29/00 ,  F04C29/02 ,  F25B1/00 ,  F25B1/04

Abstract: PROBLEM TO BE SOLVED: To reduce an oil content taken to the outside a closed vessel, and prevent decrease of the oil content inside the closed vessel in a rotary compressor which uses coolant mainly composed of HFC, and oil mainly composed of mineral oil or alkylbenzene. SOLUTION: This type of rotary compressor has a discharge pipe 19 arranged on the side of a cylinder 5 compared to a main side housing 6 of a closed vessel 1, and a bypass 21 having one end opened into a discharge cover 20 and the other end opened to the main side housing 6 on the side of a motor M. The opening on the side of the motor M is opened to a rotor 2. It is thus possible to separate oil from the discharged gas without deteriorating life which may be caused by local temperature rise of motor windings, and reduce oil content taken to the outside of the closed vessel.

公开(公告)号：JPH06129381A

公开(公告)日：1994-05-10

申请号：JP27406992

申请日：1992-10-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： SATO JUN ,  WATAKABE SHUNZO ,  MATSUMOTO TAKESHI

IPC: F04C29/00 ,  F04C29/02 ,  F04C29/12

Abstract: PURPOSE:To enhance the reliability by pressing a partition plate fast to a discharge cover with the flange part of a suction pipe, preventing a high pressure gas from blowing off into the oil, and accomplishing good performance of oil feed to the sliding parts. CONSTITUTION:The rotation of a rotor 3 is transmitted to a crank shaft 9, and a coil spring 14 rotates while holding [he curved shape being restricted by an oil pipe 15 fixed to a side housing 7 on the counter-motor side fast together with a discharge cover 18, and thereby the oil 4 is fed bit by bit to the crank shaft 9 by the lead of the coil spring 14. A discharge cover 21 and a partition plate 22 are pressed fast to the side housing 7 by the flange part of a suction pipe 20. This eliminates suction of the high pressure gas into the oil 4 from around the pipe 20, ensures that the oil 4 is fed in good performance from the oil pipe 15 to cause the shaft 9 to be oiled satisfactorily, and accomplishes a compressor having a high reliability.

公开(公告)号：JPH0674170A

公开(公告)日：1994-03-15

申请号：JP22692992

申请日：1992-08-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： OTA TOSHIHIKO ,  NISHIHARA HIDETOSHI ,  WATAKABE SHUNZO ,  MATSUMOTO TAKESHI ,  SATO JUN

IPC: F04C18/356 ,  F04C29/02

Abstract: PURPOSE:To provide a compressor which exhibits high energy efficien and being highly reliabable concerning friction by feeding oil constantly into a cylinder while maintaining sealing property at the end of a piston. CONSTITUTION:A rolling piston type rotary compressor is a high pressure compressor in which discharge gas is released in a closed container, and an oil sump recess 7b is formed at a position in which three sections comprising a section communicated with a space 7c in a cylinder 8 on at least one of the internal surface of a bearing plate 7a by the rotation of a piston 19, a section closed by the end of the piston 19, and a section communicated with the inner side of the piston 19 are formed by the rotation of the piston 19.