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公开(公告)号：JP2001304128A
公开(公告)日：2001-10-31
申请号：JP2000129136
申请日：2000-04-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： YAGI AKIO , KITA ICHIRO , UMEOKA IKUTOMO , SUGIMOTO SHUHEI , KANESHIRO KENJI
IPC: F04B39/10
Abstract: PROBLEM TO BE SOLVED: To improve the refrigerating capacity by ensuring the reliability of a suction valve, and improve the efficiency of a closed type compressor. SOLUTION: This closed type compressor has the suction valve 23 having plural arm parts 23a and opening and closing a suction hole 16, and a projecting part 24 formed on a space 23c between the arm parts 23a integrally with an opening and closing part 23b of the suction valve 23, whereby the opening and closing part 23b of the suction valve 23 becomes heavy in weight, and the natural frequency is reduced. As the number of times of the opening and closing of the suction valve 23 per one stroke is reduced, an average opening amount of the suction valve 23 is increased, which improves the efficiency, and the metallic fatigue of the suction valve 23 is reduced, which improves the reliability. The refrigerating capacity can be improved by reducing the space 23c at the projecting part 24.
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公开(公告)号：JP2001304118A
公开(公告)日：2001-10-31
申请号：JP2000122726
申请日：2000-04-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUGIMOTO SHUHEI , KITA ICHIRO
IPC: F04B39/00
Abstract: PROBLEM TO BE SOLVED: To reduce heating of a refrigerant in a muffler and to increase efficiency, regarding a hermetic compressor used in a refrigerator for domestic use. SOLUTION: This hermetic compressor comprises a motor part 3; an enclosed container 1 containing a machine part 2, such as a cylinder 4, etc.; a valve plate 6; a muffler 19; and a suction tube 9. The muffler 19 is provided with inlet and outlet flow passages 20 and 21. The inlet flow passage 20 is provided at one end with an inlet flow passage opening 23 opened to the internal part of the enclosed container 1 and at the other end with an inlet flow passage opening 23 opened to the internal part of the muffler 19. The outlet flow passage 21 is provided at one end with an outlet flow passage opening 24 opened to the internal part of the muffler 19 and at the other end with a suction part 25 communicating with the suction hole of the valve plate 6. Since at least a part of the outlet flow passage 21 makes contact with the inlet flow passage 20, refrigerant gas is suppressed in the increase of its temperature during the passage of it through the outlet flow passage 21, which is related to improvement of volumetric efficiency and compressor efficiency.
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公开(公告)号：JP2000249061A
公开(公告)日：2000-09-12
申请号：JP5003599
申请日：1999-02-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO , UMEOKA IKUTOMO , KANESHIRO KENJI , IDE TERUMASA , HORIGUCHI TAKAFUMI , HAYASHI YASUSHI , MARUYAMA TOMIO
Abstract: PROBLEM TO BE SOLVED: To decrease the occurrence of noise due to resonance of a shell in a compressor used in a domestic refrigerator or the like. SOLUTION: A fulcrum fixing part 16 is fixed at the resonance node part 21 of the resonance mode of a shell 2, a working contact surface part 18 is forced to press contact with a resonance belly part 20 through oil 22. The fulcrum fixing part 16 and the working contact surface part 18 reduce the occurrence of noise by adding a baffle plate 19, coupled by a coupling vibration part 17, to the shell 2.
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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.
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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
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.
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Patent Agency Ranking
公开(公告)号：JPH10196537A
公开(公告)日：1998-07-31
申请号：JP429697
申请日：1997-01-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO , TANAKA YASUHIKO , UMEOKA IKUTOMO
Abstract: PROBLEM TO BE SOLVED: To improve the assemblage of the large end part and the small end part of a connecting rod, and reduce a rotational load due to the shaft torsion of a large end hole and a small end hole, in a reciprocating piston compressor used for a domestic refrigerator and so on. SOLUTION: The cylindrical locking part 22c of the rod part 22b of a small end part 22 is inserted in a cylindrical hole part 25b formed transverse to the large end hole 25a of a large end part 25, and also a locking pin 26 is inserted in a fixed hole 25c, thereby a connecting rod 21 is assembled while having a few degrees of torsional freedom around the shaft of the rod part 22b. Therefore, the workability and assemblage of the connecting rod 21 can be, of course, improved, and the shaft torsion of the large end hole 25a and the small end hole 22a are absorbed, so that the reduction of a rotational load and a lowering of efficiency can be prevented.
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公开(公告)号：JPH09228951A
公开(公告)日：1997-09-02
申请号：JP3773096
申请日：1996-02-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO , TANAKA YASUHIKO , UMEOKA IKUTOMO
IPC: F04B39/10
Abstract: PROBLEM TO BE SOLVED: To facilitate assembly by decreasing an interference noise of refrigerant gas while rationalizing efficiency of two delivery valves, in a valve device of a relatively small sized compressor used in a home refrigerator or the like. SOLUTION: By bending a first/second stopper 234, 235 at an angle Θ1, Θ2 so that a lift amount in respective end points 238, 239 from a bending part 237 is h1, h2, a first/second delivery valve 231, 232 provides a respectively different lift amount, so as to make behavior different when refrigerant gas is delivered, by respectively providing a proper lift in accordance with ability, delivery efficiency is rationalized, also action, preventing increasing of a fluid noise by mutual interference generated by making very approximate moving of the first/second delivery valve 231, 232, is provided.
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公开(公告)号：JPH08240374A
公开(公告)日：1996-09-17
申请号：JP4701195
申请日：1995-03-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO
Abstract: PURPOSE: To prevent abnormal high temperature from being produced owing to bad circulation of dissipated heat by a method wherein a rising air stream is produced along a heat dissipation passage with dissipated heat from a machine chamber and a condenser disposed vertically upwardly of the heat dissipation passage communicating with the top surface of a refrigerator. CONSTITUTION: A refrigerator includes a machine chamber 9 including a compressor 2 at a lower portion of the refrigerator 1, a heat dissipation passage 5 having one end opened to a machine chamber 9 vertically of the back surface 12 and the other end located on the top surface 7 of the refrigerator 1 and opened to the machine chamber 9, and a condenser 4 disposed vertically upwardly of the heat dissipation passage 5.
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公开(公告)号：JPH07145782A
公开(公告)日：1995-06-06
申请号：JP29515593
申请日：1993-11-25
Applicant: MATSUSHITA REFRIGERATION
Inventor： SASABE SHIGERU , KITA ICHIRO
Abstract: PURPOSE:To provide a hermetic compressor which solves the problem points of the prior recovery method of a refrigerant and oil regarding the discarding of a refrigerater and realizes the improvement of the workability of the recovery of the refrigerant and the oil and the improvement of the recovery rate of the oil. CONSTITUTION:Constitution is such that oil is stored at the lower part of the inside of a sealed container 1, and in the inside, a refrigerant is reserved, and at the same time a discharge pipe 17 is provided at the bottom of the sealed container 1, and the discharge pipe 17 is connected to the oil in the sealed container 1, and opening is made so that the tip may become even with the bottom portion of the sealed container 1.
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公开(公告)号：JPH04353277A
公开(公告)日：1992-12-08
申请号：JP12602391
申请日：1991-05-29
Applicant: MATSUSHITA REFRIGERATION
Inventor： SAEKI YUJI , TAKEMURA JIRO , YUMOTO TAKASHI , YAHIKI JIYUNICHIROU , KITA ICHIRO , ONO TAKESHI
Abstract: PURPOSE:To effectively restrain flow change of compressed refrigerant gas by introducing discharge gas from a compression element stored in a closed container fixed with a discharge pipe to the discharge pipe by a discharge line, and by providing a restricted part on the discharge pipe. CONSTITUTION:A compression mechanism 1 stored in a closed container 2 compresses refrigerant gas by reciprocal motion of a piston 6 in a cylinder 5 by a crank shaft 8 rotated by an electric motor 3 and discharges it through a discharge muffler, a discharge line 13 and a discharge pipe 14 fastened on the closed container 2 outside. In this case, inside diameter set smaller than the inside diameter of the discharge line 13 is set by providing a restricted part 14a on a part outside of the closed container 2 in the circumferential direction of the discharge pipe 14. Consequently, change of flow (pulsation) of compressed gas can be damped without preventing enlargement of the size of a compressor and its startability.
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