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公开(公告)号：JPH05141347A
公开(公告)日：1993-06-08
申请号：JP30590491
申请日：1991-11-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： MANGYO MASAO , ONO TAKESHI , KITA ICHIRO , YAHIKI JIYUNICHIROU , KOYAMA TAKASHI , YOSHIMURA TAKAO , AKASHI HIRONARI
Abstract: PURPOSE:To provide a compressor wherein vibration is suppressed to a very low level even during the starting of vibration and even during operation and production of vibration is reduced to a very low value by disposing proper balance weights to a rotor. CONSTITUTION:Proper balance weights 42 and 43 are disposed to the rotor 34 of the motor of a motor compressor wherein a compressor 31 is disposed to an upper part and a motor 32 to a lower part. A spring mounting plate 35 is fixed to the lower end part of the stator 33 of the motor and a coil spring 44 is arranged between the spring mounting plate and a lower shell 37.
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公开(公告)号：JPH0565878A
公开(公告)日：1993-03-19
申请号：JP22581991
申请日：1991-09-05
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI
IPC: F04B39/12
Abstract: PURPOSE:To prevent a break of a delivery pipe of a reciprocating compressor. CONSTITUTION:A pipe is constituted of a delivery pipe 14 provided to pass through a fixed part to an outlet pipe 12 and fixed to a compression element 14 by a clamp 16 in a position on a plane in parallel relating to an axis 17 of showing a vibration direction of an electric motor compression element part and relating to also a rotational center axis of a shaft 7.
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公开(公告)号：JPH04228888A
公开(公告)日：1992-08-18
申请号：JP40813490
申请日：1990-12-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI
Abstract: PURPOSE:To prevent deterioration of a vibration attenuating effect due to fluctuation in frequency, variation in manufacturing, strong shock in transporting, or fatigue fracture caused by vibration of a rotary compressor. CONSTITUTION:An inertia body 16, two coil springs 17a, 17b connected to one end of the inertia body 16, and fixing fittings 18a, 18b for fixing the other ends of the coil springs 17a, 17b are mounted. A guider 19 having small holes 19a, 19b in the vicinity of the coil springs 17a, 17b, and functioning to restrain the behavior of the inertia body 16 only in the approximately circumferential direction or in the normal direction of a circle on a rotating shaft of a compressor element 4 with respect to the rotating shaft are also provided.
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公开(公告)号：JPH03102167A
公开(公告)日：1991-04-26
申请号：JP23781989
申请日：1989-09-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI
IPC: F25D17/08
Abstract: PURPOSE:To increase the air passage area of the suction duct of a freezing chamber and to prevent the increase of air passage resistance by a method wherein when circulation of an airflow in a refrigerating chamber is stopped, a blade plate mounted to the tip part on the cooler chamber side of the partition part of the suction duct is flapped to the suction duct side of the refrigerating chamber. CONSTITUTION:An air flow cooled by a cooler 5 is delivered through the delivery duct of a freezing chamber to a freezing chamber 3 with the aid of a blower 7 and returned to a cooling chamber through a suction duct 8 of the freezing chamber. The air flow is further delivered through the delivery duct of a refrigerating chamber to a refrigerating chamber 4 and returned through the suction duct of the refrigerating chamber to circulate the air flow in a refrigerator, and the freezing chamber 3 and the refrigerating chamber 4 are cooled. When the temperature of the refrigerating chamber 4 is cooled to a set value, a damper mounted in the delivery duct of the refrigerating chamber is closed, circulation of an air flow in the refrigerating chamber 4 is stopped, an air flow is circulated only in the refrigerat ing chamber 3, and the freezing chamber 3 is further cooled. In this case, since a blade plate 12 is flapped to the suction dust 9 side of the refrigerating chamber, the air passage area of the suction duct 8 of the freezing chamber is increased compared with that during circula tion of an air flow to the refrigerating chamber 4, and the increase of air 5 passage resistance can be relieved.
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公开(公告)号：JPH02248664A
公开(公告)日：1990-10-04
申请号：JP7093289
申请日：1989-03-23
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To obtain a sufficient vibration damping effect even if the rotating frequency is changed by fixing one of hooks on the vertical plane to the central axis of the both end parts to a sealed case having a compressing element part and an electric motor part contained therein, and the other to an inertial body. CONSTITUTION:A sealed case 2 is vibrated by the operation of a compressor. The vibration of the sealed case 2 is damped by vibrating the inertial body 15 of a dynamic vibration reducer 14 in the opposite phase to the vibration of the sealed case 2. When a connecting part 16 is formed into a closely adhered coil form and the deformation is used as bending direction, a space is formed between windings to change bending rigidity, whereby damping effect is obtained and the peak width of the natural frequency of the dynamic vibration reducer 14 is widened. Thus, the peak width of the maximum damping frequency is widened, and vibration damping effect can be obtained in a wide frequency band. Hooks 16b, 16c are provided on the vertical plans to the central axis 16a in the connecting part 16, and fixed to the inertial body 15 and a fixture 17, whereby the dispersion of the natural frequency can be restricted to a small degree.
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Patent Agency Ranking
公开(公告)号：JPH02153276A
公开(公告)日：1990-06-12
申请号：JP30739888
申请日：1988-12-05
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI
Abstract: PURPOSE:To perform stable vibration damping of a rotary type compressor by a method wherein the one wide end part of a tapered coupling part of a dynamic vibration reducer is mounted to the securing part of the closed case of a rotary type compressor, and the other narrow part to the inertia body of the dynamic vibration reducer. CONSTITUTION:When a rotary type compressor 1 compresses a refrigerant in a cylinder 7, a fluctuation in an angular velocity is produced during rotation of a crank shaft 6a, and a closed case 2 is fluctuated. In this case, the maximum damping frequencies of a dynamic vibration reducer 14 mounted to the closed case 2 and the rotary type compressor 1 are regulated to a proper valve, and an inertial body 15 of the dynamic vibration reducer 14 is vibrated in a reverse phase to that of the closed case 2. Namely, reaction torque is exerted on the closed case 2 through a coupling part 16 of the dynamic vibration reducer 14 and a securing tool 17 secured to the closed case 2, and vibration of the closed case 2 is absorbed. The coupling part 16 is formed in the shape of a taper, and the securing tool 17 side is set to a wide end part 16a to disperse concentration of a stress generated at a securing end.
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公开(公告)号：JPH0245664A
公开(公告)日：1990-02-15
申请号：JP19659488
申请日：1988-08-05
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To secure the stable vibrationproof support by supporting the supporting legs installed at the nearly equal positions to the axis center of a motor-driven compression element through a vibrationproof member. CONSTITUTION:A rotary compressor 1 generates the revolution vibration around the axis center 5 of a motor-driven compression element by the load variation due to compression, when the motor-driven compression element in a sealed case 2 compresses coolant, and said sealed case 2 vibrates mainly in the revolution vibration around the axis center 5. Therefore, the vibration on the axis center 5 is the least, and the vibration of a mirror plate part 3 is the least at the axis center position 3a. Therefore, coolant piping 4 which serve as supporting leg are installed at the axis center positions 3a of the mirror plate part 3, and further, the vibration of the coolant piping 4 can be reduced by allowing the axis center 4a of the coolant piping 4 to coincide with the axis center 5. Therefore, the generation of noise generated by the vibration of the coolant pipe 4 can be suppressed.
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公开(公告)号：JPH029989A
公开(公告)日：1990-01-12
申请号：JP16013988
申请日：1988-06-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI
Abstract: PURPOSE:To secure a vibration damping effect and prevent a dynamic vibration reducer from being broken down as well as to aim at stable vibration abatement by installing a coiled spring fixed to a closed case or a compressive element part at its one end and an inertial body fixed to the other end of the spring respectively. CONSTITUTION:There are provided with a coiled spring 16 fixed to a closed case 2 in which a motor part and a compressive element part are fixed and housed or this compressive element part at its one end, and an inertial body 15 fixed to the other end of this spring 16. With suchlike constitution, vibration to be generated at time of operation of a rotary compressor 1 is damped by feeding this rotary compressor 1 with reaction torque when a beam dynamic vibration reducer 14 fixed to a rotary compressor body is vibrated in opposite phase against vibration of the rotary compressor 1. Then, a connection between the closed case 2 and the inertial body 15 is formed into the coiled spring 16, whereby stress due to any deformation being produced by a vibration and an impact in an end of the spring being fixed to the closed case 2 is thus relieved.
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公开(公告)号：JPH01155160A
公开(公告)日：1989-06-19
申请号：JP31594087
申请日：1987-12-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , KAMITSUJI TOSHIO , KOYAMA TAKASHI , SUZUKI SOUZOU , KIDA TAKUMI
Abstract: PURPOSE: To prevent vibration and noise by providing superconducting coils arranged as a fluid pump in the proximity of a refrigerant pipe, and a plurality of pairs of electrode corresponding to the superconducting coils disposed in the refrigerant pipe such that the angle between fields formed by the pair of electrodes and the superconducting coils can be varied. CONSTITUTION: Refrigerant in a refrigerant pipe 8a at a fluid pump 9 section is ionized by positive and negative electrodes 12, 13 and a current flows from an electrode 12 to an electrode 13. On the other hand, strong flux is generated from a superconducting coil 10a toward a superconducting coil 11a to induce a Lorentz force which is varied by varying the pairs of superconducting coil 10a, 11a, 10b, 11b,... through an angle controller 15. Consequently, flow rate of refrigerant is increased/decreased and the refrigerant is moved in the direction of a condenser 2 by Lorentz force to circulate through a cooler 7. Since a refrigerant flow is generated while controlling the flow rate electromagnetically, mechanical vibration and noise are eliminated resulting in noise reduction.
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公开(公告)号：JPH01139962A
公开(公告)日：1989-06-01
申请号：JP30084587
申请日：1987-11-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： SUZUKI SOUZOU , KAMITSUJI TOSHIO , KOYAMA TAKASHI , KIDA TAKUMI , UMEOKA IKUTOMO
Abstract: PURPOSE:To prevent the development of mechanical vibration and noises is the device by constituting a fluid pump with super-conductive coils which are arranged near a coolant piping, a pair of electrodes which are located at a position which corresponds to the super-conductive coil in the coolant piping and a direct current electric power source connected to those electrodes, and further controlling the number of the operated fluid pumps. CONSTITUTION:If, for example, in the operation of a fluid pump 11 a switch 7' is closed, the coolant in the coolant piping 12a of the fluid pump 11 is ionized by positive and negative electrodes 15 and 16 and an electric current flows from the electrode 15 to the electrode 16. On the other hand a very strong magnetic flux is generated in the direction from a super-conductive coil 13 to a super-conductive coil 14 by the super-conductive coils between the super-conductive coils 13 and 14. With this magnetic flux the electric current flowing between the electrodes 15 and 16 and the magnetic flux flowing between the super-conductive coils 13 and 14 develop a Lorenz force and the ionized coolant moves towards a condenser 2 and a flow of the coolant to the condenser 2 is developed, and it circulates in a cooling device 10. Because a flow of the coolant is thus developed electro-magnetically by the Lorenz force, there develops no mechanical vibration and noises.
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