公开(公告)号：JP2000274363A

公开(公告)日：2000-10-03

申请号：JP8115699

申请日：1999-03-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAYASHI AKIRA ,  AKASHI HIRONARI ,  YAGI AKIO

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To achieve noise reductions in regrad to a hermetic compressor by reducing noises passing through an intake muffler. SOLUTION: This compresser is formed out of an intake muffler 22, a cylinder head 23, an intake passage 24 opened to the inside of the muffler 22 at one end thereof, and communicated with the inside of a cylinder at the other end thereof, and of a resonator 25 provided for the intake passage 24 in the cylinder head 23. Since noise generated following after the pulsation of refrigerant gas and so on, can be attenuated at a place close to the source of noise, even noise propagated through the intake passage for passing through the intake muffler can be attenuated, so that this device can be formed into a hermetic compressor low in noise.

公开(公告)号：JP2001200788A

公开(公告)日：2001-07-27

申请号：JP2000008913

申请日：2000-01-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWABATA JUNTA ,  MORITA ICHIRO ,  INAGAKI KO ,  ISHIDA TAKANORI ,  KATAYAMA MAKOTO ,  HAYASHI AKIRA

IPC: F04B35/04 ,  H02K7/14

Abstract: PROBLEM TO BE SOLVED: To prevent such reliability reduction that a compressor is stopped by abrasion power of a sliding part biting into the sliding part, in a vibration type compressor used for a refrigerating cycle. SOLUTION: This device is provided with a communicating pipe 14, whose one end is opened to a compression chamber 9, and the other end is opened to the high pressure side of a system, and an opening/closing valve 15 attached to the opening part of the compression chamber 9 side of the communicating pipe 15, refrigerant gas of the high pressure side of the system rapidly and directly flows into the compression chamber 9 when an operation of the compressor is stopped, thereby, even if abrasion powder is produced on the sliding part, the abrasion powder stuck on the sliding part is discharged. Thus the abrasion powder can be prevented from sticking on the sliding part, and reliability reduction which results in the compressor stoppage can be prevented.

公开(公告)号：JP2000297749A

公开(公告)日：2000-10-24

申请号：JP10792899

申请日：1999-04-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： INAGAKI KO ,  MORITA ICHIRO ,  KOBAYASHI MASANORI ,  KATAYAMA MAKOTO ,  HAYASHI AKIRA

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To reduce the vibration of a vibration type compressor used for a refrigerator and air conditioner. SOLUTION: As this compressor is constituted by a weight 21, constituted so as to surround a compressor main body 2, by which the gravity center is nearly matched with the gravity center of the compressor main body 2 or the reciprocating shaft of a piston 5 and a spring 22 whose one end is installed on an air-tight casing 1 or fixed element 12 and whose other end is installed on a weight 21 and elastically deformable in the axis direction of the piston 5, the vibration exciting force of the compressor main body 2 is matched with the action point of the action force from a dynamic vibration exciting instrument and the vibration can be reduced surely.

公开(公告)号：JP2000297748A

公开(公告)日：2000-10-24

申请号：JP10792799

申请日：1999-04-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO ,  MORITA ICHIRO ,  KOBAYASHI MASANORI ,  INAGAKI KO ,  HAYASHI AKIRA

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To ensure the reliability by reducing the frictional wear of a slide part, in a vibration type compressor used in a refrigeration cycle. SOLUTION: This compressor is provided with a recessed part 14a continuing to the circumferential direction at the outer periphery surface of a piston 14, a slide part 14b whose one end is always faced to the inner periphery of a cylinder 4 and the communication groove 14c whose other end is not connected to the circumferential direction, positioned to both sides of the recessed part 14a at the outer periphery surface of a piston 14. The lubrication oil flow of the axial direction of the piston is improved and the lubrication oil can be supplied over the entire slide area and a drop of reliability such as the wear by the oil supply shortage of the slide part can be prevented.

公开(公告)号：JP2000064960A

公开(公告)日：2000-03-03

申请号：JP23395598

申请日：1998-08-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAYASHI AKIRA ,  YOSHIMURA TAKAO ,  AKASHI HIRONARI ,  YAGI AKIO ,  SUGIMOTO SHUHEI

IPC: F04B39/12

Abstract: PROBLEM TO BE SOLVED: To provide a hermetic compressor capable of maintaining a stably high efficiency by preventing a temperature rising of a cooling medium gas suctioned to a cylinder and always obtaining an enhancing effect of a refrigeration ability. SOLUTION: Since an inlet duct 17 and a muffler entrance passage 16 are communicated by a ball joint portion 19 and further, the muffler entrance passage 16 and the ball joint portion 19 is a vertically movable constitution, a gap is not caused by a dispersion of an assembly and a vibration of a hermetic compressor during driving and further, the ball joint portion 19 can follow against a vertical vibration of the mechanical portion generated when the closed type compressor is driven. Therefore, a stable refrigerating capacity and an enhancing effect of an efficiency can be obtained and a noise caused by a columnar resonance of a gas in a hermetic container is reduced and further, a generation of a noise from the ball joint portion 19 can be prevented.

公开(公告)号：JP2001165059A

公开(公告)日：2001-06-19

申请号：JP35131499

申请日：1999-12-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO ,  MORITA ICHIRO ,  KAWABATA JUNTA ,  KOBAYASHI MASANORI ,  INAGAKI KO ,  ISHIDA TAKANORI ,  HAYASHI AKIRA

IPC: F04B49/06

Abstract: PROBLEM TO BE SOLVED: To control the operating frequency to be agreed with the resonance frequency corresponding to change in the operational pressure condition to constantly execute the operation with the resonance frequency of high efficiency in a vibrating compressor used in a refrigerating cycle. SOLUTION: An operating frequency of a variable element 13 is controlled to a resonance frequency corresponding to the operating pressure condition detected by a temperature detecting part 24 by a frequency control means 25, even when the operating pressure condition is changed and the operating frequency of the variable element 13 is different from the resonance frequency, whereby providing the operation of high efficiency.

公开(公告)号：JP2001165042A

公开(公告)日：2001-06-19

申请号：JP35131299

申请日：1999-12-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAYASHI AKIRA ,  MORITA ICHIRO ,  KAWABATA JUNTA ,  INAGAKI KO ,  ISHIDA TAKANORI ,  KATAYAMA MAKOTO

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To prevent deterioration of efficiency and reliability of a compressor, by preventing local entanglement with a cylinder even in the case a piston is tilted in a diametric direction due to insufficiency of work accuracy and assembly accuracy of a cylinder, piston, and an elastic element, relating to a vibration type compressor. SOLUTION: Rigidity in a side end part of a compression chamber 12 of a cylinder 13 is decreased, elastic deformation can be made in a diametric direction, so that local entanglement between a piston and the cylinder can be prevented.

公开(公告)号：JP2001132636A

公开(公告)日：2001-05-18

申请号：JP31923799

申请日：1999-11-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO ,  MORITA ICHIRO ,  KAWABATA JUNTA ,  ISHIDA TAKANORI ,  INAGAKI KO ,  HAYASHI AKIRA

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To prevent lowering of reliability such as stoppage of compressor as abrased powder of a sliding part bites in the sliding part, etc. on the oscillating type compressor to be used for a refrigerating cycle, etc. SOLUTION: It is possible to discharge abrased powder collected in a recessed part 14a in a closed casing 1 at the time of suction by high pressure gas introduced at the time of compression, to prevent accumulation of abrased powder in a sliding part and to prevent lowering of reliability such as stoppage of a compressor as the recessed part 14a provided on the sliding part of a piston 14 is communicated to a high pressure chamber 7b of a cylinder head 7 at the time of compression and it is communicated to the inside (low pressure) of the closed casing 1 at the time of suction.

公开(公告)号：JP2001055974A

公开(公告)日：2001-02-27

申请号：JP22968699

申请日：1999-08-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAYASHI AKIRA ,  MORITA ICHIRO ,  KOBAYASHI MASANORI ,  INAGAKI KO ,  YAGI AKIO ,  KATAYAMA MAKOTO

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To prevent deterioration of motor efficiency caused by unevenness of an air gap between a stator and a rotor of a motor in an oscillating type compressor, and improve reliability of the compressor while preventing a partial wrench. SOLUTION: An elastic element has an outer peripheral part retained by a stationary element 14, and an inner peripheral part fixed or connected to a rotatable element 15. The elastic element is so arranged as to obtain maximum radial rigidity, in an arranging direction of a permanent magnet 13c. Due to action of a magnetic field generated by the permanent magnet 13c, it is possible to prevent attraction and inclination of a rotor 13b by the permanent magnet 13c. By keeping an air gap between a stator 13a and the rotor 13b uniform, it is possible to prevent deterioration of motor efficiency and deterioration of reliability caused by partial wrench.

公开(公告)号：JP2000308322A

公开(公告)日：2000-11-02

申请号：JP10792499

申请日：1999-04-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  KOBAYASHI MASANORI ,  INAGAKI KO ,  KATAYAMA MAKOTO ,  HAYASHI AKIRA

IPC: H02K33/06

Abstract: PROBLEM TO BE SOLVED: To improve the characteristics and efficiency of a linear motor without increasing the size of the motor, by arranging a plurality of permanent magnets around the motor by uniting the magnets by utilizing the recessed and projecting fitting sections of the magnets. SOLUTION: Each of the arcuate permanent magnets 12 constituting the mover 13 of a linear motor has recessed and projecting fitting sections 12a and 12b, and the magnets 12 are united in one cylindrical body by fitting the projecting fitting sections 12b in the recessed fitting sections 12a. Since a perfect cylindrical shape is formed only of the magnets 12 without using any hole, the magnets 12 can be used effectively to the utmost and the number of the magnets 12 required for obtaining necessary motor characteristics and efficiency can be minimized and, accordingly, the size of the motor 13 can be reduced. Therefore, the characteristics and and efficiency of the motor can be improved without increasing the size of the motor.