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公开(公告)号：JPH0240093A
公开(公告)日：1990-02-08
申请号：JP19140888
申请日：1988-07-29
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI
Abstract: PURPOSE:To keep off any drop in a vibration damping effect by notching a thread ridge end at the connecting side of a screw part formed in a compression element part or an inertial body on an axial section. CONSTITUTION:Reaction torque is fed to a closed case 2 via a screw 17 clamped to a spring 16 of a dynamic vibration reducer 14 and this closed case 2, and thereby vibration in the closed case is damped. The spring 16 is formed in a coil form closely stuck, whereby a surface in contact with the spring 16 each is rubbed by vibrations so that a damping effect is securable, thus natural frequency in the dynamic vibration reducer 14 is widened in terms of its peak width. In addition, thread ridge ends 17a, 18a of the screws 17, 18 are notched on an axial section passing through a shaft of a thread part, whereby positioning of a clamp end of the spring 16 is carried out so that stabilization for a spring constant is thus promoted.
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公开(公告)号：JPH01315683A
公开(公告)日：1989-12-20
申请号：JP14749988
申请日：1988-06-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To aim at stably supporting a rotary compressor in a vibration suppressing condition by inserting a coolant pipe for the rotary compressor in the inner edge part of a vibration suppressing support member, by inserting the outer edge part of the vibration supporting member into the holding part of a support fixture, and by connecting the inner and outer edge parts of the vibration suppressing support member through the intermediary of ribs. CONSTITUTION:A vibration suppressing support member 10 made of resilient materials has cylindrical inner and outer edge parts 10a, 10b which are connected to each other through the intermediary of ribs 10c which are reversed alternately so that their rib corner points 10d confront each other. Meanwhile a support fixture 11 integrally incorporated with a cylindrical holding part 11a is fastened to a support plate 12 by means of screws 13. A coolant pie 4 for a rotary compressor 1, which is arranged along the center axis 5 and which also serves as a support leg, is inserted in the inner edge part 10a of the vibration suppressing support member 10. Further, the outer edge part 10b of the vibration suppressing support member 10 is inserted in the holding part 11a of the support fixture 11. With this arrangement, the rotary compressor 1 is stably supported in a vibration suppressing condition, thereby it is possible to reduce noise which is otherwise generated by transmission of vibration from the rotary compressor 1 to a refrigerator body.
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公开(公告)号：JPH01300072A
公开(公告)日：1989-12-04
申请号：JP13187188
申请日：1988-05-30
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To facilitate stable oscillation prevention support by connecting the inner edge part of an oscillation prevention support member made from a resilient material to the outer edge part by means of plural kind of ribs of specified form, inserting a support leg of rotary compressor in the inner edge part, and inserting the outer edge part in the retaining part of support fittings. CONSTITUTION:At an oscillation support member 10, cylindrical inner and outer edge parts 10a, 10b are formed from resilient material. The parts are connected with a plurality of ribs 10c set such that the inclination directions are alternately in reverse relations with respect to the radial directions. Support fittings 11 are formed with a cylindrical retaining part 11a and fastened to a support plate 12 by means of a screw 13. In a rotary compressor 1, a coolant piping 4 serving as right and left support legs provided on an axial core 5 is inserted into the inner edge part 10a of oscillation prevention support member 10 while the outer edge part 10b thereof into the retaining part 11a, and thereby the support is fixed.
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公开(公告)号：JPH01219457A
公开(公告)日：1989-09-01
申请号：JP4524188
申请日：1988-02-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , KAMITSUJI TOSHIO , SUZUKI SOUZOU , KOYAMA TAKASHI , KIDA TAKUMI
IPC: F25B31/00
Abstract: PURPOSE:To obtain a cooling device, which will never generate vibration and noise, by a method wherein the cooling device is constituted of a pair of electrodes, in which a fluid pump is arranged in a refrigerant pipeline, a D.C. power source, connected to the pair of electrodes, and a superconductive coil, rotatable around the refrigerant pipeline. CONSTITUTION:Electrodes 12, 13 are connected to a D.C. power source 14 and refrigerant of a fluid pump 9 in a refrigerant pipeline 8a is ionized by the positive and negative electrodes 12, 13 whereby an electric current is conducted from the electrode 12 to the electrode 13. The current is generated between the electrodes 12, 13 in the refrigerant pipeline 8a and strong magnetic field is generated by superconductive coils 10, 11, whereby the flow of refrigerant is generated by Lorentz force. The superconductive coils 10, 11 are rotated around the outer periphery of the refrigerant pipeline 8a to change the positions of the electrodes 12, 13, whereby an angle between the direction of the current and the direction of the strong magnetic field is changed, the Lorentz force is changed and the flow speed of the refrigerant in the pipeline is changed, therefore, a capacity is changed. On the other hand, the superconductive coil is turned more than 180 deg. whereby the direction of the magnetic field is reversed. Accordingly, the Lorentz force is generated in opposite direction whereby the flow of the refrigerant is reversed.
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公开(公告)号：JPH01139963A
公开(公告)日：1989-06-01
申请号：JP29844687
申请日：1987-11-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO , SUZUKI SOUZOU , KIDA TAKUMI , UMEOKA IKUTOMO
Abstract: PURPOSE:To prevent the vibration and noises in the device by constituting a fluid pump with a super-conductive coil arranged near a coolant piping, a pair of electrodes located in the coolant piping at a position corresponding to the super-conductive coil, and direct current electric power source connected through a switching device which reverses the direction of the electric current. CONSTITUTION:If, for example, a positive electric charge is given to an electrode 13 and negative electric charge to an electrode 14 by means of a switching device 15, the coolant in the coolant piping 9a of a fluid pump 10 is ionized in positive and negative electrodes 13 and 14 and an electric current flows from the electrodes 13 toward the electrode 14. On the other hand between super-conductive coils 11 and 12 a strong magnetic flux is generated from the super-conductive coil 11 toward the super-conductive coil 12 by means of the super- conductive coils 11 and 12. With this magnetic flux a Lorenz force develops by the electric current flowing between the electrodes 13 and 14 and the magnetic flux which flows between the super-conductive coils 11 and 12 and the ionized coolant moves to a heat exchanger 2 on the outdoor side, and a flow of the coolant to the heat exchanger 2 is generated and it circulates in a cooling device. With this arrangement a fluid pump can be formed without mechanical vibration and noises and by reversing the flow of the coolant by reversing the direction of the electric current with the switching device the cooling cycle can be made a room heating cycle.
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Patent Agency Ranking
公开(公告)号：JPH01121593A
公开(公告)日：1989-05-15
申请号：JP28126287
申请日：1987-11-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , KAMITSUJI TOSHIO , KOYAMA TAKASHI
Abstract: PURPOSE:To effectively absorbing oscillations without loosing compact characteristics by providing a beam movement absorber composed of an inertia body interconnected through a beam fixed on the inner periphery of an enclosed case and a resilient member attached on the beam surface. CONSTITUTION:An inertia member 10 stands inside of an enclosed case 1, is connected to a beam 11, and interconnected to the inner face of the case 1. The beam 11 supports the body 10 at its one end while is fixed to the inner face of the case 1 at the other end. An resilient member 12 is adhered to the space between the body 10 and the case 1, and to the beam 11 surface. A beam movement absorber 9 is composed of the body, the beam 11, and the resilient member 12.
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公开(公告)号：JPS63255577A
公开(公告)日：1988-10-21
申请号：JP9028687
申请日：1987-04-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To improve the sound suppressing effect by installing a mount for supporting and fixing a sealed case at the positions of the node part and loop part in the natural vibration mode of the lower order at the edge part of the sealed case. CONSTITUTION:The rear part mount 10 of a compressor is fixed through welding at the position of the node part and loop part in the primary natural vibration mode of the rear cover shell 2c of a sealed case 2. Since the rear part amount 10 is fixed through welding at the position of two nodes B and the loop part A between the nodes in the natural vibration mode, the vibration of the rear part mount 10 which is generated by the deformation vibration due to the primary natural vibration mode of the rear cover shell 2c can be prevented.
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公开(公告)号：JPS63173887A
公开(公告)日：1988-07-18
申请号：JP451187
申请日：1987-01-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To shift natural vibration modes whose directions on a cover shell are different between each other and suppress vibration by forming the cup- shaped cover shell of an enclosed case with plural ridge lines having specific forms and curved faces connecting the parts between said ridge lines. CONSTITUTION:Since vibration which is generated due to the compression of a refrigerant and the like in a cylinder 7 is transmitted to an enclosed case 11 via a bearing 8, etc., the enclosed case 11 is vibrated generating noise. In this case, plural ridge lines 11br having small-curvature R forms are provided on a front cover shell 11b which forms the enclosed case 11 from the center part toward an opening part, the parts between the ridge lines 11br are connected by curved faces 11bh having larger curvatures, and the relative positions of the ridge lines 11br are placed between the arms 8a of the bearing 8. Thereby, the natural frequencies of natural vibration modes which deformingly vibrate in the axial direction and the axial and perpendicular directions of the front cover shell 11b can be shifted between each other, suppressing deformation and vibration in the radial direction.
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公开(公告)号：JPS63154886A
公开(公告)日：1988-06-28
申请号：JP30098686
申请日：1986-12-17
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI , UMEOKA IKUTOMO
Abstract: PURPOSE:To reduce vibration, in a rotary refrigerant compressor, by temporarily bending a refrigerant piping projecting from the side of a compression element at a cylindrical section of an enclosed casing then securing said piping to a M-shaped fixing table through a resilient member and a securing metal. CONSTITUTION:A delivery pipe 12 and a suction pipe 13 of a rotary compressor 1 are projected from a cover 4 at the side of a compression element 6 in a cylindrical section 3 of an enclosed casing 2, then bent temporarily to the side of a motor 8 so as to secure the fixed portions 12b, 13b thereof between a recess 15c in a M-shaped fixing table 15 secured to the outer circumference at the motor 8 side of the cylindrical section 3 and a recess 16a of a fixing metal 16 through a resilient member 18 such as rubber. Consequently, basic wave vibration of projecting portions 12a, 13a of the pipings 12, 13 is damped by the fixed portions 12b, 13b and high frequency vibration being transmitted to the fixed portions 12b, 13b is damped by the resilient member 18 thus preventing occurrence of vibration or breakdown of piping. Furthermore, degradation of compressor efficiency due to transmission of heat from the enclosed casing 2 to the pipings 12, 13 can be suppressed.
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公开(公告)号：JPS6361795A
公开(公告)日：1988-03-17
申请号：JP20635986
申请日：1986-09-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI
Abstract: PURPOSE:To reduce the generation of noise, by a method wherein a closed case is formed with a cylindrical part and cup-shaped cover parts, at least the one of which has approximately spherical surface with an inner surface radius being a specified relation with the inner peripheral radius of the cylinder part. CONSTITUTION:Vibration due to compression of liquid in a cylinder 10 is propagated through liquid in he closed case 12 to generate noise. The closed case 12 is formed with a cylinder part with an inner peripheral radius of R and cup-shaped cover parts, having an approximately spherical surface with an inner surface radius (r), at least the one of which establishes special relation with R of 1.13
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