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公开(公告)号：DE69631405T2
公开(公告)日：2004-12-02
申请号：DE69631405
申请日：1996-09-12
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： YAMAMOTO HIDEO , SHIBUYA KOYO , SATOMURA TAKASHI , MORITA ICHIRO , FUJIWARA NORIYUKI , NAKAHASHI AKIHISA
IPC: F04B49/06 , F04B17/04 , F04B35/04 , G05B19/404
Abstract: A vibrating compressor of the present invention, which comprises a piston driving section for driving a piston by supplying a piston driving force, a displacement detecting section connected in an axial direction of the piston, an upper dead point position detecting section for detecting an upper dead point position based on a piston position signal from the displacement detecting section, and a driving force control section for changing the driving force supplied to the piston by the piston driving section according to a difference between the upper dead point position and a preset upper dead point position reference value immediately after the upper dead point position detecting section detects the upper dead point position, prevents its compression efficiency from decreasing due to stabilization and prevents a device from being damaged. In the vibrating compressor, it is also possible to calculate a stroke based on a detected piston position or to control the driving force based on a detected frequency.
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公开(公告)号：DE69631405D1
公开(公告)日：2004-03-04
申请号：DE69631405
申请日：1996-09-12
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： YAMAMOTO HIDEO , SHIBUYA KOYO , SATOMURA TAKASHI , MORITA ICHIRO , FUJIWARA NORIYUKI , NAKAHASHI AKIHISA
IPC: F04B49/06 , F04B17/04 , F04B35/04 , G05B19/404
Abstract: A vibrating compressor of the present invention, which comprises a piston driving section for driving a piston by supplying a piston driving force, a displacement detecting section connected in an axial direction of the piston, an upper dead point position detecting section for detecting an upper dead point position based on a piston position signal from the displacement detecting section, and a driving force control section for changing the driving force supplied to the piston by the piston driving section according to a difference between the upper dead point position and a preset upper dead point position reference value immediately after the upper dead point position detecting section detects the upper dead point position, prevents its compression efficiency from decreasing due to stabilization and prevents a device from being damaged. In the vibrating compressor, it is also possible to calculate a stroke based on a detected piston position or to control the driving force based on a detected frequency.
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公开(公告)号：JPH10205447A
公开(公告)日：1998-08-04
申请号：JP904297
申请日：1997-01-22
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： ASAIDA YASUHIRO , FUJIWARA NORIYUKI , ONO TAKESHI
IPC: F04B39/00
Abstract: PROBLEM TO BE SOLVED: To suppress vibration level of an outer shell due to dynamic vibration absorber effect and reduce generation of compressor noise by bringing resonance frequencies of an outer shell and a leg supporting the outer shell into a closer level. SOLUTION: An outer shell 1 shows the largest amplitude in its resonance at its portion near an electrode terminal 15 arranged on a flat portion 16. A weight 14 is welded to the outer shell 1 at its portion near the electrode terminal 15. A resonance frequency of the outer shell 1 is shifted to a lower frequency side by arranging the weight 14 onto the outer shell 1. By combining the outer shell 11 with a leg 13, a frequency different from each case is obtained. The resonance frequencies of the outer shell 11 and the leg 13 are arranged with each other by the presence of the weight 14. It is thus possible to suppress a vibration level of the outer shell 11 due to dynamic vibration absorber effect, and reduce generation of noises.
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公开(公告)号：JPH11201040A
公开(公告)日：1999-07-27
申请号：JP23398
申请日：1998-01-05
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： KONISHI YASUFUMI , ASAIDA YASUHIRO , FUJIWARA NORIYUKI , SASANO HIROSHI , YAMAMOTO KIYONORI , KUBOTA AKIHIKO
Abstract: PROBLEM TO BE SOLVED: To restrain temperature rising of refrigerant gas and improve refrigerating efficiency by preventing heat of high temperature gas delivered from the inside of a cylinder to a delivery chamber from being added to refrigerant gas sucked into a suction chamber through a cylinder head. SOLUTION: A suction cylinder head 14 having a suction chamber 9 for guiding refrigerant gas into a cylinder 2, and a delivery cylinder head 15 having a delivery chamber 10 for delivering high temperature gas compressed in the cylinder 2 are respectively mounted to head parts of the cylinder 2 in the condition that the both cylinder heads 14, 15 are separated from each other by providing a gap 16 between them. Thus, even when the delivery cylinder head 15 is heated by high temperature gas remaining in the delivery chamber 10, heat conduction from the delivery cylinder head 15 to the suction cylinder head 14 is shut off by the gap 16, and therefore, temperature rising of refrigerant gas in the suction chamber 9 is restrained to improve refrigerating efficiency.
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Patent Agency Ranking
公开(公告)号：JPH08247025A
公开(公告)日：1996-09-24
申请号：JP5430895
申请日：1995-03-14
Applicant: MATSUSHITA REFRIGERATION , MATSUSHITA ELECTRIC IND CO LTD
Inventor： YAMAMOTO HIDEO , SATOMURA TAKASHI , MORITA ICHIRO , FUJIWARA NORIYUKI , NAKABASHI AKIHISA
Abstract: PURPOSE: To provide a vibration type compressor generating no over-stroke of a piston. CONSTITUTION: This vibration type compressor 15 constitute o a displacement detector 21 connected in the axial direction of a piston 14, a converter circuit converting AC power into DC power, an inverter circuit converting DC into AC and applying a voltage to a coil by switching transistors, a top dead center position calculating means calculating the top dead center position of the piston 14 based on the piston position signal from the displacement detector 21, and an amplitude control means changing the output voltage of the inverter circuit in response to the difference between the top dead center position and the top dead center reference value set in advance.
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公开(公告)号：JPH06123525A
公开(公告)日：1994-05-06
申请号：JP27406192
申请日：1992-10-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , KAMITSUJI TOSHIO , HAMANO YASUKI , FUJIWARA NORIYUKI
Abstract: PURPOSE:To enable effect of noise suppressing not to be decreased by a method wherein a connecting pipe length is set to a specified length. CONSTITUTION:A pressure pulsation generated within a cylinder 7 is attenuated in the case that a first noise suppressing device 12 and a second noise suppressing device 13 constructed by a recessed part and a discharging chamber 10a as well as the chamber may act as an expansion type noise suppressing device and then refrigerant passes through discharging chambers 10a and 13a. In this case, as the length of a connected pipe 11 is set to a length satisfying equations I and II, it is possible to increase weight or decrease weight of acoustic mass of the connecting pipe 11 in respect to an air column resonance mode generated between the first noise suppressing device 12 and the second noise suppressing device 13 and then an air column resonance frequency is moved out of a low range or a wide range resonance. Due to this fact, it is possible to make a positive avoidance of the air column resonance frequency from a pressure pulsation basic frequency and further to prevent a reduction of an effect of noise suppressing at frequencies near the fundamental frequency.
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公开(公告)号：JPH0693968A
公开(公告)日：1994-04-05
申请号：JP24054692
申请日：1992-09-09
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： FUJIWARA NORIYUKI , NAGAIKE MASARU , IWAO KAZUAKI , YOSHIMURA TAKAO , KOYAMA TAKASHI , AKASHI HIRONARI , INAGAKI KO
Abstract: PURPOSE:To provide a compressor which is prevented from the generation of high noise by amplifying pulsation noise of a refrigerant during operation through resonance of a space in a compressor. CONSTITUTION:Both or one of a suction port 3 and a delivery port 4 for a refrigerant is set to a plural number and arranged on the nodes 5 and 6 of a mode where space resonance of the space of an outer sell 1 occurs and in relation to the node of other mode 7, the suction ports are formed in positions symmetrical to each other.
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公开(公告)号：JPH05133663A
公开(公告)日：1993-05-28
申请号：JP29683491
申请日：1991-11-13
Applicant: MATSUSHITA REFRIGERATION , MATSUSHITA ELECTRIC IND CO LTD
Inventor： KAMITSUJI TOSHIO , UMEOKA IKUTOMO , NAGAIKE MASARU , FUJIWARA NORIYUKI
IPC: F25D17/08
Abstract: PURPOSE:To ensure a low noise refrigerator of a forced connection current type by preventing fan noise from being amplified owing to a air column resonance by preventing such an air column resonance from being formed in a duct or changing the resonance point of the same. CONSTITUTION:There is provided a partition plate 14 extending from a coupling part 13 between a second duct 10 and a third duct 11 into a first duct or there is provided in a duct 8 a third suction inlet with an opening area at least equal to those of first and second suction inlets 10a, 11a.
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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
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.
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