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公开(公告)号：JPH08285409A
公开(公告)日：1996-11-01
申请号：JP8812895
申请日：1995-04-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： SASABE SHIGERU , SAKAI TOSHIKAZU , KITA ICHIRO , KATAOKA JINKO , KINO AKIHIRO , SHIMIZU TAKESHI , TANAKA MASAAKI , YONEMURA MINORU
Abstract: PURPOSE: To increase an oil returning amount within an accumulator and to enable a poor lubricating action at a sliding part of a compressor to be reduced. CONSTITUTION: This accumulator is comprised of a container 5 storing refrigerant; a partition plate 6 for dividing the container 5 into two chambers, i.e., A chamber 7 and B chamber 8; an inlet pipe connected to an upper part of the A chamber 7 of the container 5; a first outlet pipe 9 connected to a lower part of the A chamber 7 of the container 5; a second outlet pipe 10 inserted into the lower part of the B chamber 8 of the container 5 and having its one end connected to a side part of the first outlet pipe 9; and a separated pipe 11 having one outer diameter smaller than an inner diameter of the inlet pipe, having one end inserted into the inlet pipe and the other end being connected to the partition plate 6 at a position higher than that of an end surface of the second outlet pipe 10.
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公开(公告)号：JPH08271098A
公开(公告)日：1996-10-18
申请号：JP7748895
申请日：1995-04-03
Applicant: MATSUSHITA REFRIGERATION
Inventor： SAKAI TOSHIKAZU , SASABE SHIGERU , KITA ICHIRO , KINO AKIHIRO , SHIMIZU TAKESHI , TANAKA MASAAKI , YONEMURA MINORU
IPC: F25B45/00
Abstract: PURPOSE: To prevent an abnormal drop in suction pressure by a method wherein a header consists of a vessel to store liquid refrigerant, a refrigerant inlet pipe connected to the upper part of the vessel and a refrigerant outlet pipe inserted from below and a part of the outlet pipe is made up of a permeable membrane whose pours have diameters within a specified range. CONSTITUTION: A header 5 has such a construction that a refrigerant inlet pipe 10 is connected to the upper part of a vessel 11 and a refrigerant outlet pipe 9 is inserted into the vessel 11 from below. A hole is provided in a part of the refrigerant outlet pipe 9 and covered with a polytetrafluoroethylene-made permeable membrane 13 which has pours with diameters of 0.01-3μm and is supported by a porous resin 12. An evaporator is connected to the upper part of the inlet pipe 10 and a compressor is connected to the lower part of the outlet pipe 9 via a suction pipe 6. Thereby, an abnormal drop in suction pressure can be prevented and the specified refrigerating performance can be maintained.
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公开(公告)号：JPH06346853A
公开(公告)日：1994-12-20
申请号：JP14051293
申请日：1993-06-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： INAGAKI KO , AKASHI HIRONARI , KITA ICHIRO
Abstract: PURPOSE:To prevent resonance sound, generated in an oil feeding space, from being transmitted into a closed space by submerging the lower coil of a stator in an electric motor in oil stored at the inner bottom part of a closed container, over the whole periphery of a space including a crankshaft. CONSTITUTION:A compressing part 2 and an electric motor 3 are enclosed inside a closed container 1. An oil passage 11 is extended obliquely upward from the lower end center 11a of a crankshaft 5 in the compressing part 2, and a vent hole 12 with one end opened to the surface 12a of the crankshaft 5 is disposed in the state of being communicated with the oil passage 11. The lower coil 15 of a stator 10 in the electric motor 3 is submerged in oil 13 stored at the inner bottom part of the closed container 1, over the whole periphery of a space including the crankshaft 5. That is, the lower coil 15 and a space surrounded by the oil 13 are closed in relation to the internal space of the closed container 1. The resonance sound generated in an oil feeding space 14 is thereby prevented from being transmitted into the closed space 1.
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公开(公告)号：JPH05133327A
公开(公告)日：1993-05-28
申请号：JP29117691
申请日：1991-11-07
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , YOSHIMURA TAKAO , AKASHI HIRONARI , MANGYO MASAO , ONO TAKESHI , KITA ICHIRO , YAHIKI JIYUNICHIROU
Abstract: PURPOSE:To reduce vibration in mechanical and motor parts so as to prevent generation of noise by balancing inertia force and centrifugal force by a piston, connecting rod, etc., with centrifugal force of balance weights in upper and lower parts in dynamic balance. CONSTITUTION:Each coefficient value of coefficients C1 to C3 in formulas I to III is designed so as to obtain 3 or less. In the formula, the alphabet X represents a distance between planes I and II, and the alphabet Y represents a distance between planes II and III. Further, the formula represents resultant force by inertia force of a piston 10, inertia force and centrifugal force of a connecting rod 12 and centrifugal force of a crank eccentric part 11a by Fa, centrifugal force of an upper part balance weight 18 by Fb and centrifugal force of a lower part balance weight 19 by Fc. The plane I represents a plane vertical to a crankshaft 11 passing through a center axis of the piston 10, and planes II, III represent planes vertical to the crankshaft 11 passing through the center of gravity of the upper/lower part balance weights 18, 19 of a rotor. In this way, generation of noise according to vibration in mechanical and motor parts can be suppressed.
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公开(公告)号：JPH04311687A
公开(公告)日：1992-11-04
申请号：JP7920091
申请日：1991-04-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： TSUCHIYA KOICHI , MANGYO MASAO , KITA ICHIRO
IPC: F04B39/00
Abstract: PURPOSE:To damp discharge gas pulsation effectively without causing the vibration-noise increase of a motor-driven compressor to a closed container due to a discharge pipe. CONSTITUTION:A discharge pipe 17 is connected to a cover 16 for the discharge muffler 9 of a cylinder block, while a second discharge muffler 19 is disposed at the cover 16 through a communicating pipe 18.
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Patent Agency Ranking
公开(公告)号：JPH04298690A
公开(公告)日：1992-10-22
申请号：JP6439791
申请日：1991-03-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： HAMADA KOJI , KITA ICHIRO
Abstract: PURPOSE:To reduce transmission of vibration from a coil spring to a closed vessel to reduce vibration and noise of a compressor, concerning a closed type compressor used for a refrigerator and the like. CONSTITUTION:In a closed vessel 12, a compressor element 13, a motor element 14, and a supporting tool 17 molded out of synthetic resin together with a coil spring 15 elastically supporting the compressor element 13 are supported through a locking tool 19 fixed to the closed vessel 12. Further, it is constituted so that they are elastically supported with a locking member 28 through a first coil spring 22 elastically supporting the compressor element 13 and a second coil spring 26 loosely fitted to the supporting bar 25 of a supporting member 23 supporting the first coil spring 22 and having different natural frequency from that of the coil spring 22.
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公开(公告)号：JPH03258978A
公开(公告)日：1991-11-19
申请号：JP5527990
申请日：1990-03-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO
Abstract: PURPOSE:To moderate the heating of a coolant gas in an inlet passage by providing heat insulating layer between two partitioning plates forming the inlet passage and two partitioning outer walls. CONSTITUTION:An inlet passage 32 is formed of two partitioning plates 33, 33a. On the outside of the partitioning plates 33, 33a, partitioning outer walls 35, 35a are provided to form heat insulating layers 36, 36a, and a heat insulating material by foamed body and the like is charged between them. Hence, the heating of a coolant gas passing the inlet passage 32 by the influence of the heat transmitted from an inlet muffler 25 outer wall can be reduced. Thus, a sufficient heat insulating effect of the coolant gas can be attained.
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公开(公告)号：JPH03185280A
公开(公告)日：1991-08-13
申请号：JP32340589
申请日：1989-12-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO
IPC: F04B39/10
Abstract: PURPOSE:To decrease micro-vibration of a valve device during the opening or closing of it by forming a delivery valve with its length from a base portion to an end unequal on the right and left sides of an axis, and making different the frequency modes of the delivery valve on the right and left sides so as to eliminate frequency modes which are hard to be damped as a whole. CONSTITUTION:When a piston 1 reciprocates inside a cylinder 3 compressed gas is allowed to pass through the delivery hole 5 of a valve plate 4 to push up the delivery valve 14 of a delivery valve reed 9. As a result, the delivery valve 14 is opened while being regulated by a delivery valve stopper 15, and the gas is delivered to the delivery chamber 16 of a cylinder head 7. In this case, the delivery valve 14 has its longitudinal side 20 opened first with a base portion 19 as a point of support and then the opposite side 21 is raised. The length of the delivery valve 14 from the base portion 19 to an end is set in such a manner that lengths are unequal on the right and left sides of an axis 18. The frequency mode of the delivery valve 14 on the longitudinal side 20 is therefore made different from that on the opposite side 21 so as to properly decrease predetermined characteristic frequency modes which are hard to be damped.
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公开(公告)号：JPS61155667A
公开(公告)日：1986-07-15
申请号：JP27760484
申请日：1984-12-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： KITA ICHIRO
Abstract: PURPOSE:To obtain sufficient cooling effect of a motor coiled-wire by attaching an oil reservoir case, which covers a lower motor coiled-wire and has an oil drain hole at the lower part thereof, to a motor and accumulating refrigerator oil in the case. CONSTITUTION:An oil reservoir case 12 is attached to a compressing element 3 as that the case covers a lower motor coiled-wire 6. During operation, refrigerator oil is sucked up by an oil suction pump 10, drained from the upper part 11 of a crankcase, and flows into the case from a gutter part 14 of the oil reservoir case 12. Since the entire body of the lower motor coiled wire 6 is therefore kept immersed in refrigerator oil of relatively low temperature, the coiled-wire 6 can be cooled sufficiently by the heat-exchanging operation with refrigerator oil having high heat capacity.
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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.
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