公开(公告)号：JP2002061582A

公开(公告)日：2002-02-28

申请号：JP2000247348

申请日：2000-08-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： SUMIYA MASAHIRO ,  OKAMOTO TAKAYUKI

IPC: F04B39/06

Abstract: PROBLEM TO BE SOLVED: To improve the efficiency of a motor-driven hermetic compressor by using an oil to cool a cylinder head and its vicinity and lower a suction gas temperature. SOLUTION: A recess 18 is provided at the upper part of a cylinder block 4 for reserving the oil. The oil is transferred from the recess 18, as a starting point, via a through-hole 19 to the outside surface of the cylinder head 13 so that the oil contacts a high temperature portion of the cylinder head 13.

公开(公告)号：JP2000337254A

公开(公告)日：2000-12-05

申请号：JP14795599

申请日：1999-05-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： MOTEGI MANABU ,  OZAKA MASAHIKO ,  KUBOTA AKIHIKO ,  SUMIYA MASAHIRO

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To improve assembly work efficiency and to prevent the deformation of a receptacle body with a lead-in rib formed by providing one of receptacle bodies of a synthetic resin intake muffler connected to the suction side of a compression element, with the tapered lead-in rib at the mutual assembly opening in a closed type motor-driven compressor. SOLUTION: A closed type motor-driven compressor used for an electric refrigerator or the like is constituted by accommodating a compression element and a motor element for driving it, in a closed container, and provided with an intake muffler including synthetic resin receptacle bodies, on the suction side of the compression element. The intake muffler comprises first to third receptacle bodies 10-12 respectively formed by injection-molding polybutylene terephthalate. A tapered lead-in rib 13 is integrally formed at the first receptacle body 10, and when the first receptacle body 10 is assembled into the second receptacle body 11, the deformation of the second receptacle body 11 is corrected by the presence of the tapered lead-in rib 13 to improve assembly workability of the first and second receptacle bodies 10, 11 and to prevent the flexural deformation of the receptacle body 10.

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.

公开(公告)号：JP2000192884A

公开(公告)日：2000-07-11

申请号：JP36919498

申请日：1998-12-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： SUMIYA MASAHIRO ,  OZAKA MASAHIKO ,  KUBOTA AKIHIKO ,  MOTEGI MANABU ,  KITA ICHIRO ,  UMEOKA IKUTOMO ,  KANESHIRO KENJI

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To reduce an intake of oil and liquid refrigerant to a compression element, to unify a connecting container of a connecting pipe in order to facilitate a production process, and to supply low-temperature refrigerant gas to the compression element in order to improve efficiency. SOLUTION: This compressor is constituted so that: an intake connecting pipe 15 is protruded into a sealed container 3 so that an opening 19 in the sealed container 3 of the intake connecting pipe 15 is located above a lower side 2 of a container and an installation portion 18 of the intake connecting pipe 15; an intake port 17 of a silencer 12 is provided at the same height of or above the opening 19; and the inlet port 17 of the silencer 12 is located ahead a opening direction of the opening 19 of the intake connection pipe 15.

公开(公告)号：JP2000130147A

公开(公告)日：2000-05-09

申请号：JP30248698

申请日：1998-10-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： UMEOKA IKUTOMO ,  KITA ICHIRO ,  KANESHIRO KENJI ,  OZAKA MASAHIKO ,  KUBOTA AKIHIKO ,  MOTEGI MANABU ,  SUMIYA MASAHIRO

IPC: F01N1/00 ,  F01N1/02 ,  F01N13/00 ,  F01N99/00 ,  F04B39/00 ,  F01N7/00

Abstract: PROBLEM TO BE SOLVED: To improve the suction efficiency and silence characteristic of a muffler, on the high efficiency and low sound of a compressor used for a household refrigerator. SOLUTION: By providing a main pipe 22, communication pipe 21 and tail pipe 19 whose mutual opening ends are adjacently arranged in a chamber 20, arranging a lateral partition plate 24 having an opening 23 in the horizontal direction of the chamber 20 while inserting the main pipe 22 and arranging an oil hole 27 having the length of the wall thickness or more of the chamber 20 on the bottom of a lower chamber 25, a fluid loss is reduced and by attenuating the pressure pulse by the anti-resonance action of the lower chamber 25, the suction efficiency and silence characteristic of a muffler 17 can be improved.

公开(公告)号：JPH11287183A

公开(公告)日：1999-10-19

申请号：JP8994998

申请日：1998-04-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： SUMIYA MASAHIRO ,  SASANO HIROSHI ,  OZAKA MASAHIKO ,  MOTEGI MANABU

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To damp transmitting pulsation while suppressing costs by drilling a hole at least one side of an intake connecting pipe and a communication element in a sealed container. SOLUTION: In a muffler 4 formed as a noise eliminating element, an inserting pipe 5 and a connecting tool 7 are arranged as a communicating element, and a hole 8 is drilled on an intake connecting pipe 6. Pulsation generated by a compression element 2 is transmitted from a muffler 4 into the inserting pipe 5, the connecting tool 7, and the intake connecting pipe 6, and is released in an sealed container 1 through the hole 8. It is thus possible to damp the pulsation, it is possible to reduce excitation force of a low pressure piping in a refrigerating cycle, and it is thus possible to reduce noise. Everywhere the hole can be drilled on a side surface part of the intake connecting pipe 6, and a releasing direction is can be set in any direction. Same effects are obtained in the case of the connecting tool 7, and in the case of the inserting pipe 5 as the communicating element.

公开(公告)号：JPH10169585A

公开(公告)日：1998-06-23

申请号：JP32932896

申请日：1996-12-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： SUMIYA MASAHIRO ,  SUZUKI ETSURO ,  IWATA HIROMITSU

IPC: F04C29/12 ,  F04C29/00 ,  F04C29/06

Abstract: PROBLEM TO BE SOLVED: To hold sealing performance by spring back force of an outer peripheral folding part, and reduce leakage of delivery gas by arranging the outer peripheral folding part formed by bending-working a bearing plate contact surface part of a delivery cover to a bearing plate side. SOLUTION: An outer peripheral folding part 17 is arranged, which is formed by holding, along the whole circumference of an auxiliary bearing plate 13, an auxiliary bearing plate side delivery cover 16 outer peripheral part of an abutting surface which is sealed by being brought contact the auxiliary bearing plate 13 and the auxiliary bearing plate side delivery cover 16 with each other. The cover 16 is fastened and fixed by several bolts 18 on the auxiliary bearing plate 13. Force against spring back is generated in a bolt fastening condition since bending is applied, and ground plane pressure having a bolt fastening torque or more is obtained. As a result, a sealing performance is increased on the outer periphery, it is suppressed in a low level that gas is leaked from an inside of the cover 16 to an outside, and noise generated by leakage of gas is reduced.

公开(公告)号：JP2002227766A

公开(公告)日：2002-08-14

申请号：JP2001319023

申请日：2001-10-17

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B39/00 ,  F04B39/10

Abstract: PROBLEM TO BE SOLVED: To provide a quiet compressor capable of more effectively damped resonance sound in a compression chamber and an inlet pressure pulsation generated in an inlet valve, as for a hermetic compressor used for the refrigerating cycle of a refrigerator and the like. SOLUTION: Noise can be more effectively damped than the noise reducing function of an intake muffler 31 by providing a resonance space 38 in the vicinity of an inlet valve port 29 positioned closer to a noise generating source. In addition, in regard to amplification of the noise with a specific frequency caused by acoustic characteristics of the intake muffler 31, the noise with the frequency can be damped before it is amplified.

公开(公告)号：JP2000356187A

公开(公告)日：2000-12-26

申请号：JP16640899

申请日：1999-06-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： KUBOTA AKIHIKO ,  OZAKA MASAHIKO ,  MOTEGI MANABU ,  SUMIYA MASAHIRO ,  KAWABATA MAIKO

IPC: F04B39/00 ,  F04B39/02

Abstract: PROBLEM TO BE SOLVED: To reduce the noise of a hermetic compressor mounted in an electric refrigerator or the like. SOLUTION: In this compressor, refrigerating machine oil stagnated in an upper surface of a cylinder block 9 uniformly flow out of a release part 13 of the refrigerating machine oil by an effect of a refrigerating machine oil drop preventing wall 12. At this time, the arranged position of the release part 13 of the refrigerating machine oil, enables the control of the route of the refrigerating machine oil returning to a bottom part of a hermetic vessel. In this way, a drop of the oil from an edge part of the cylinder block 9 is prevented, and generation of a collision sound generated by collision against a splash sprung by rotation of a supply oil pipe can be avoided. Accordingly, the noise of the compressor can be reduced.

公开(公告)号：JPH10159771A

公开(公告)日：1998-06-16

申请号：JP32375896

申请日：1996-12-04

Applicant: MATSUSHITA REFRIGERATION

Inventor： IWATA HIROMITSU ,  SUZUKI ETSURO ,  SUMIYA MASAHIRO

IPC: F04C29/00 ,  F04C18/356 ,  F04C29/06

Abstract: PROBLEM TO BE SOLVED: To provide a compressor both generating a low noise and having high efficiency without requiring high machining precision by applying the constitution that a shaft and a rotor fixed to the shaft are moved upward via a magnet pull force generated between a stator and the rotor during a stable operation, and both edges of an eccentric part is kept in such a state as not in contact with upper and lower bearings. SOLUTION: Gases drawn into the cylinder 4 of a compressor part Y in a sealed vessel 1 are compressed, due to the reduction of the capacity of a compression chamber on the rotation of a rotor 5, pass a delivery valve 12 and are discharged to the sealed vessel 1 via a delivery muffler 13. Then, the delivered gases flow through a gap between the rotor 2 and the stator 3 of a motor part Z, and are discharged to the outside of a compressor via a delivery pipe 19. In this case the stator 3 and the rotor 2 are vertically offset by the prescribed distance, and a shaft 6 and the rotor 2 are moved upward, using a magnet pull force generated between the stator 3 and the rotor 2. Also, both edges 6B of the eccentric part 6A of the shaft 6 are maintained in a non-contact state for upper and lower bearings 7 and 8.