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公开(公告)号：JPH01121666A
公开(公告)日：1989-05-15
申请号：JP27765687
申请日：1987-11-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO
Abstract: PURPOSE: To suppress mechanical vibration and noise by providing a condenser, an expansion valve, an evaporator and a fluid pump comprising a superconducting coil, a pair of electrodes, a DC power supply and a heat filament. CONSTITUTION: A strong magnetic field is generated between superconducting coils 10, 11 by inducing a current between electrodes 12, 13 an refrigerant piping 8a thus producing a refrigerant flow by Lorentz force. Ionization of refrigerant is accelerated by emission of electrons from a heat filament 15 and the Lorentz force is enhanced thus realizing an efficient fluid pump 9 free from mechanical vibration.
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公开(公告)号：JPS6477787A
公开(公告)日：1989-03-23
申请号：JP23522087
申请日：1987-09-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , MORITA MITSURU , KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To prevent the generation of noise from the piping by holding the circular outer periphery of a bearing or the like inside an enclosed case through plural rollers, and providing a bellows-form vibration absorbing member between the part fixed to the enclosed case and the pressing-in part to the compressor side, of a suction pipe. CONSTITUTION:After numerous balls 19 are accomodated rollable in a ring-form groove 18a formed at the circular outer periphery of a bearing 18, the bearing 18 is held by a ring form shell 21 which is fixed to the inner peripheral surface of an enclosed case 2, and a crankshaft 5 driven by a motor M is held rotatable to the bearing 18. To an eccentric member of the crankshaft 5, a piston 6 is geared rotatable, and the end of the crankshaft 5 is held by a bearing 9. And an end of a suction pipe 22 is pressed in and fixed to the bearing 9, while a part of the suction pipe 22 is welded and fixed to the enclosed case 2. And a vibration absorbing member 22a of a bellows-form is formed between the pressing-in part and the weld, to prevent the generation of noise owing to the vibration of the piping.
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公开(公告)号：JPS6473187A
公开(公告)日：1989-03-17
申请号：JP22905287
申请日：1987-09-11
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To minimize the occurrence of vibration by connecting a variable flywheel consisting of a rib section, a movable mass section and of a spring section with a crank shaft. CONSTITUTION:A variable flywheel 12 consisting of a rib 12, a movable mass section 12b moving the rib section 12a freely back and forth and of a spring section 12c the end of which is fixed on the crank shaft 5 side of the rib section 12a while the other end section is fixed on the movable mass section 12b is connected with the crank shaft 5. This constitution lets the movable mass section 12b be pulled up to the crank shaft 5 side by the spring section 12c at the time of starting, thereby preventing starting torque from being increased. And the movable mass section 12b is positioned toward the outer circumferential direction by centrifugal force at the time of normal operations so as to enhance a flywheel effect, thereby minimizing the fluctuation in rotation speeds of the crank shaft 5 so as to reduce vibration and noise.
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公开(公告)号：JPS64385A
公开(公告)日：1989-01-05
申请号：JP15474187
申请日：1987-06-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To suppress the occurrence of the vibration and noise due to the rotating speed fluctuation of a compressor by forming a nearly cylindrical thick mass section on the outer periphery of a flywheel provided at the tip of the crank shaft on an enclosed type rotary compressor. CONSTITUTION:A flywheel 13 provided at the tip of a crank shaft 12 is constituted of a nearly cylindrical thick mass section 13a on the outer periphery and a nearly disk-shaped thin flange section 13b. The rotating speed fluctuation of the crank shaft 12 generated when a refrigerant is compressed is a considerably distorted wave-form, thus a high frequency component of the rotating speed fluctuation is generated, and the vibration noise caused by it is generated. A large inertial moment is provided by the function of the mass section 13a of the flywheel 13, thus the rotating speed fluctuation of the crank shaft 12 can be effectively suppressed. The noise due to vibration can be thereby suppressed.
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公开(公告)号：JPS63255591A
公开(公告)日：1988-10-21
申请号：JP9031687
申请日：1987-04-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To reduce the operation noise by fixing a ring-shaped strain absorbing member which is made of soft metal and installed onto the outer peripheral part of a bearing and forming a rib in the circumferential direction onto the sealed case. CONSTITUTION:A strain absorbing member 13 is made of a soft metal, and interposed between a bearing 8 at the part having the rib 12d of a trunk shell 12a. The fastening force of a sealed case 12 due to the shrink fitting in fixing the bearing 8 onto the sealed case 12 and the thermal strain in welding are absorbed by the elasticity of a cut part 13a and the strain absorbing member 13 body, and the bearing 8 is prevented from being distorted. Therefore, the deformation vibration of the sealed case which is generated by the deformation vibration in the radial direction of the bearing can be suppressed.
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Patent Agency Ranking
公开(公告)号：JPS63173886A
公开(公告)日：1988-07-18
申请号：JP451087
申请日：1987-01-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , KOYAMA TAKASHI , UMEOKA IKUTOMO
Abstract: PURPOSE:To suppress the fundamental vibration of piping and lower noise by projecting out said piping to a cooling system from a position corresponding to the center of gravity of compressor in the cylinder part of a closed casing which houses a motor and a compressing element. CONSTITUTION:Since a fundamental vibration which is generated when a compressing element 6 in an enclosed case 2 compresses a refrigerant, etc., is transmitted to the enclosed case 2 via a bearing 7 and a cylinder part 3, the enclosed case 2 is deformed and vibrated generating noise. In this case, a discharge pipe 12 is projected out of the position 3c corresponding to the center of gravity G of compressor of the cylinder part 3 of the enclosed case 2. As the rotary compressor 1 vibrates with the center of gravity G of compressor as the node, the fundamental vibration is the smallest at the position 3c corresponding to the center of gravity G of compressor. Accordingly, the fundamental vibration of the projecting part 12a of the discharge pipe 12 can be made smaller as compared with the case where the discharge pipe 12 is projected out of a cover part 4 or the vicinity 3b of the fixing part for the compression element of the cylinder part 3 of the enclosed case 2.
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公开(公告)号：JPS63173885A
公开(公告)日：1988-07-18
申请号：JP450487
申请日：1987-01-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To suppress the deformation and vibration of an enclosed case and reduce the generation of noise by fixing the stator of a motor and the bearing of a rotor with plural bolts and shrinkage fitting and fixing said bearing and its arm, said stator, etc., to said enclosed case. CONSTITUTION:Since the vibration which is generated in a cylinder 7 is transmitted to an enclosed case 2 via the bearing 12 of a rotor, the stator 11 of a motor, etc., the enclosed case 2 is deformed and vibrated, generating noise. In this case, plural holes 11a are provided on the stator 11 in the outer peripheral part position of a motor winding. Also, plural arms 12a are provided on the bearing 12 in positions corresponding to the holes 11a. And, the stator 11 and the bearing 12 are fixed via the fitting-in between the holes 11a and the arms 12a. And, further, the bearing 12, the arms 12a, and the stator 11 are shrinkage fitted and fixed to the closed case 2. Thereby, various deformation and vibration of the enclosed case 2 can be suppressed, effectively reducing noise generated by the deformation and vibration of the enclosed case 2.
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公开(公告)号：JPS63150488A
公开(公告)日：1988-06-23
申请号：JP29955386
申请日：1986-12-16
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To prevent the transmission of the high frequency vibration supplied from a sealed case by bending the pipes of a cooling system which project from the vicinity of the compression element fixed part of a sealed case towards all electric motor side and fastening said pipes onto the cylinder part of the electric motor side through the elastic member by a belt. CONSTITUTION:A discharge pipe 12 and suction pipe 13 for connecting a cooling system and a rotary type compressor 1 are projected outwardly from the cover part 4 of a sealed case 2 and once belt toward an electric motor 8 side, and fixed in the vicinity 3a of the edge part on the electric motor B side of the cylinder part 3 of the sealed case 2 and the fixed parts 12b and 13b are fastening-fixed through the elastic members 17 and 15 through a steel belt 16. Since the pipes are fixed again at the part having the small fundamental wave vibration of the sealed case, the fundamental wave vibration to the cooling system is attenuated, and also the transmission of the high frequency wave vibration is suppressed by the elastic members, and the breakage of the pipe can be prevented.
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公开(公告)号：JPS63138191A
公开(公告)日：1988-06-10
申请号：JP28475786
申请日：1986-11-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMITSUJI TOSHIO , UMEOKA IKUTOMO
Abstract: PURPOSE:To prevent a noise caused by pipe-vibration from occurring, by bending once pipes which projected in the peripheral direction from the nighborhood of a compression-element-fixed-part in a sealed case, and fixing them around the motor-side end of a cylindrical part of the closed case by means of a belt. CONSTITUTION:Pipes 11 and 12, which project in the peripheral direction from a lid 4 of a closed case 2, are bent once toward the motor (8) side and then fastened for fixing to the neighborhood 3a of a motor (8)-side end of a cylindrical part 3 of the closed case 2 by means of a steel belt 13. With this contrivance, since both pipes 11 and 12 are refastened at a place at which the fundamental frequency of a compressor is small, the pipe vibration which will be transferred to the cooling system can be attenuated, thereby preventing a noise from occurring.
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公开(公告)号：JPS63131886A
公开(公告)日：1988-06-03
申请号：JP27913986
申请日：1986-11-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： KOYAMA TAKASHI , KAMITSUJI TOSHIO
Abstract: PURPOSE:To reduce noise by making a non-planer portion of a cap portion of a cup-like shape in an approximate spherical shape and specifying the relationship between the diameter of the planer portion and the inner surface radius of the spherical portion. CONSTITUTION:A closed case consists of an approximately cylindrical body 14 for holding in and fixing a stator and bearing, and a cap portion 15. The relationship between the diameter R2 of a planer portion 15a of the cap portion 15 and an inner radius R1 of the approximately cylindrical body 14 is specified with the equation 0.5
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