公开(公告)号：JP2000120537A

公开(公告)日：2000-04-25

申请号：JP29350998

申请日：1998-10-15

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B35/04 ,  H02K7/00 ,  H02K7/14

Abstract: PROBLEM TO BE SOLVED: To move a piston amplitude center position just after start to an opposite compression chamber side comparing with a stable operation time, prevent a piston from colliding with a cylinder head at the time of start and prevent generation of vibration and noise by moving a movable element to the opposite compression chamber side when a compressor is stopped. SOLUTION: When current carrying to a motor 3 is carried out, a needle element 3b fixed to a movable element 14 is attracted in a magnetic electrode direction of a stator 3a. A capacity in an air spring chamber 16 formed by the movable element 14 and a block 15a is reduced, leakage of air is prevented since a clearance between the movable element 14 and the block 15a is narrow, pressure in the air spring chamber 16 is increased, and a piston 14a is pushed in a reverse direction. The piston 14a is reciprocating moved in an axial direction by repeating this operation. Even if displacement to the opposite compression chamber side of a piston 5 is increased in the case where an outside air temperature is rapidly rises up, high pressure is climbed up, and power supply voltage is increased, reduction of reliability such as fatigue breakdown of an air spring chamber 16 is not generated.

公开(公告)号：JPH11303763A

公开(公告)日：1999-11-02

申请号：JP10911098

申请日：1998-04-20

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B49/06

Abstract: PROBLEM TO BE SOLVED: To operate a compressor at the refrigeration capability corresponding to the outside air temperature change and load change by controlling the amplitude of a rotor in response to the difference between the top dead center position of a piston calculated from the piston position signal of a piston position detecting sensor and multiple top dead center reference values set in advance, and changing the top dead center reference value. SOLUTION: During the operation of a compressor, the output voltage of a power supply 17 is changed in proportion to the difference between the top dead center position of a piston 5 calculated by a top dead center calculating means 16 based on the piston position signal of a piston position detecting sensor 14 and the top dead center reference value 19 set in advance in an amplitude control means 18 so as to eliminate the difference and invariably keep a top clearance constant. When the outside air temperature is lowered or a thermal load is reduced, a top dead center reference value changing means 23 selects the top dead center reference value corresponding to the required refrigeration capability from multiple top dead center reference values prepared in advance and changes the top dead center reference value 19 to obtain the refrigeration capability corresponding to the external condition changes based on the outside air temperature, system pressure and temperature.

公开(公告)号：JPH10131856A

公开(公告)日：1998-05-19

申请号：JP28637796

申请日：1996-10-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  KOBAYASHI MASANORI ,  KATAYAMA MAKOTO ,  NISHIMURA KOICHI

IPC: F04B17/04 ,  F04B35/04 ,  H02K7/14

Abstract: PROBLEM TO BE SOLVED: To prevent lowering of compressor efficiency and wear of a sliding part by preventing the generation of local sliding and pinching at the sliding part of a piston and a cylinder even in case of the piston and a cylinder being machined and assembled with eccentricity and inclination in an oscillating compressor used for a refrigerating cycle or the like. SOLUTION: An oscillating compressor is composed of a shaft 13 axially connected to a piston 5, and a resonance spring 8 with its inner peripheral part fixed to a movable element 11 and with its outer peripheral part fixed to a fixed element 12. Accordingly, even in case of the piston 5 and a cylinder 4 being machined and assembled with eccentricity and inclination, the generation of local sliding and pinching at the sliding part of the piston 5 and cylinder 4 is prevented so as to prevent lowering of compressor efficiency and wear of the sliding part and to prevent excessive stress of the resonance spring 8, thereby obtaining high reliability.

公开(公告)号：JPH10131855A

公开(公告)日：1998-05-19

申请号：JP28637496

申请日：1996-10-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO ,  MORITA ICHIRO ,  KOBAYASHI MASANORI ,  NISHIMURA KOICHI

IPC: F04B17/04 ,  F04B35/04 ,  H02K7/14

Abstract: PROBLEM TO BE SOLVED: To prevent the contact and rubbing of a resonance spring even in case of the stroke quantity of a piston being increased so as to prevent the damage of the resonance spring and the generation of noise in an oscillating compressor used for a refrigerator, air conditioner, or the like. SOLUTION: An oscillating compressor is provided with a resonance spring 8a with an inner peripheral part 8b fixed to a movable element 5c and with an outer peripheral part 8c fixed to a fixed element 4c, an outer peripheral spacer 8d interposed at the outer peripheral part 8c of the resonance spring 8a, and an inner peripheral spacer 8e thicker in plate thickness than the outer peripheral spacer 8d and interposed at the inner peripheral part 8b of the resonance spring 8a. Accordingly, even in case of operating pressure or the like being changed to increase the stroke quantity of a piston 5, mutual rubbing of the resonance spring 8a is prevented without making the resonance spring 8a large-sized so as to be able to prevent the wear and damage of the resonance spring 8a and the generation of noise.

公开(公告)号：JPH07229496A

公开(公告)日：1995-08-29

申请号：JP2228794

申请日：1994-02-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： KOBAYASHI MASANORI ,  MORITA ICHIRO

IPC: F04C18/356 ,  F04C23/00 ,  F04C29/02

Abstract: PURPOSE:To improve volumetric efficiency of a rotary compressor and to prevent any increment in a sliding loss from occurring as well as to enhance its reliability by making improvements in the wear resistance and dependability of an oil feeding mechanism, and feeding a bearing part and a vane sliding part with such lubricating oil as being less in coolant meltage from this feeding mechanism, in this rotary compressor available in a refrigerating cycle or the like. CONSTITUTION:This rotary compressor is equipped with a guide pipe 12b, whose one end is clamped to a sub-bearing 8 and the other end is opened into lubricating oil, a torsion plate 19 being housed in this guide pipe 12b and rotatable, and an oil feeding mechanism 12 made up of connecting a countershaft 3b and this torsion plate 19 by means of two bevel gears 21a and 21b, respectively.

公开(公告)号：JPH05141376A

公开(公告)日：1993-06-08

申请号：JP30156291

申请日：1991-11-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： KOBAYASHI MASANORI ,  YOSHIMURA TAKAO ,  MORITA ICHIRO

IPC: F04C18/356 ,  F04C29/02

Abstract: PURPOSE:To prevent occurrence of deficiency in lubricating oil and to improve reliability by providing an oil feed guide having the one end communicated to an oil discharge port formed in either a main bearing, an auxiliary bearing, or a shaft and the other end opened to the vicinity of a vane, in a rotary type compressor having an eccentrically rotated roller. CONSTITUTION:In a cooling system, refrigerant gas is compressed, in order, in a compression chamber partitioned by a roller 5 and a vane 6 through rotational movement of a shaft 3 along with rotation of an electric motor part 2 and discharged through a delivery pipe 17 by means of a delivery valve, not shown. Lubricating oil 18 gathering to the inner lower part of a closed casing 1 at a current time is fed through oil passages 3d-3f to each slide part along with rotation of a coil spring 12a fixed to an auxiliary shaft 3b of an oil feed mechanism 12. In this case, an oil feed guide 19 having its one end communicated to an oil discharge port 13 on the electric motor part 2 side of a main bearing 7 and the other end opened to the vicinity of the vane 6 is provided. This constitution causes maintenance of the feed of oil to the vane 6 even when a lubricating oil level is lowered.

公开(公告)号：JPH05133371A

公开(公告)日：1993-05-28

申请号：JP29549491

申请日：1991-11-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  YOSHIMURA TAKAO ,  KOBAYASHI MASANORI

IPC: F04C18/356 ,  F04C23/02 ,  F04C29/06

Abstract: PURPOSE:To suppress generation of noise due to unequality of air gaps by setting eccentricity or the like of the air gap so as to satisfy each specific formula, relating to a distance between specific planes, each mass of a roller and each balance weight, maximum frequency, air gap at assembly time, etc. CONSTITUTION:Planes I to III respectively vertical to a shaft 3 by passing respectively through centers of gravity of a roller 5 and each balance weight 2c, 2d are set. L1, L2, M1, M2, M3 are assumed for distance between the planes I, II, distance between the planes II, III, sum of mass of a crank eccentric part 3c and the roller 5, each mass of balance weights 2c, 2d. Further, R1 to R3, FMAX and delta are assumed for each distance between the center of gravity of each mass M1 to M3 and an axis of passing through the center of the shaft 3, operational maximum frequency and an air gap at assembly time. For instance, eccentricity (e) of the air gap represented by a formula: e=(4.242X10 XFMAX -3.36X10 XFMAX+0.13)/(2delta)X100[%] is set to 50% or less.

公开(公告)号：JPH05133370A

公开(公告)日：1993-05-28

申请号：JP29118091

申请日：1991-11-07

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  YOSHIMURA TAKAO ,  KOBAYASHI MASANORI

IPC: F04C18/356 ,  F04C23/02 ,  F04C29/06

Abstract: PURPOSE:To suppress generation of vibration due to unbalance by setting planes respectively vertical to a shaft by passing through respectively centers of gravity of a roller and two balance weights, and setting each coefficient, related to a distance or the like between the planes, so as to satisfy each specific formula. CONSTITUTION:Each plane I to III respectively vertical to a shaft 3 by passing through respectively centers of gravity of a roller 5 and each balance weight 2c, 2d is set. L1, L2 are assumed for distances between the planes I, II and between the planes II, III. Further, M1, M2, M3, R1 to R3 and FMAX are assumed for sum of masses of a crank eccentric part 3c and the roller 5, mass of each balance weight 2c, 2d, each distance between the center of gravity of each mass M1 to M3 and an axis of passing through the center of the shaft 3 and an operated maximum frequency. For instance, a coefficient C1 represented by a formula: C1=M3.R3.(L1+L2)/(M2.R2.L1) is set so as to satisfy a formula: ¦C1-1¦ XFMAX -7.848X10 XFMAX+0.68.

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：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.