公开(公告)号：JPH07167074A

公开(公告)日：1995-07-04

申请号：JP31315593

申请日：1993-12-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATAYAMA MAKOTO

IPC: F04C29/02 ,  F04C18/344

Abstract: PURPOSE:To prevent suction of a liquid refrigerant in a compression element during the starting of a compressor and to prevent wear of a compression element by a method wherein a first suction pipe fixed to a closed casing and a second suction pipe fixed to the compression element are interconnected through a suction spiral pipe. CONSTITUTION:In a closed type compressor wherein a motor-operated compression element 4 is incorporated in a closed casing 1, a first suction pipe 12 fixed to the closed casing 1 and a second suction pipe 13 fixed to the compression element 4 are interconnected through a suction spiral pipe 11a. The periphery of the spiral pipe 11a is surrounded with a closed tank 14 and the interior of the closed tank 14 is communicated with the interior of the pipe 11a through communicating holes 15... formed in the suction spiral pipe 11a. When a liquid refrigerant being too much for vaporization right after the starting of the closed compressor is sucked through a spiral pipe, the liquid refrigerant is brought into a spiral flow. The liquid refrigerant made migrate to the outer peripheral side by a centrifugal force is released in the closed tank 14 through the communication holes 15 and only refrigerant gas sucked in the compression element.

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：JP2000154777A

公开(公告)日：2000-06-06

申请号：JP32635398

申请日：1998-11-17

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To suppress a sliding loss and to enhance operation efficiency by providing a fixed element constituted of a stator of a motor and a cylinder, a moving element constituted of a mover of the motor and a piston and an elastic element whose part is fixed to the moving element and the fixed element and forming a recessed part in a sliding part of the cylinder and the piston. SOLUTION: When a motor 3 is energized, a mover 3b fixed to a piston 14 is sucked in a magnetic pole direction of a stator 3a, continuously, the mover 3b is pushed in an opposite direction with elastic force stored in an elastic element 8 disposed between the mover 3b and a block 6 and the piston 14 is reciprocated in an axial direction by this repetition. As a result, coolant gas is led to a compression chamber 9 within a cylinder 4 via a low pressure chamber 7a, and after coolant gas is compressed, coolant gas is discharged via a high pressure chamber 7b. At this time, sliding loss is reduced by reducing sliding area of the piston 14 and the cylinder 4 and an efficient operation is realized by forming recessed parts 14a of a plurality of lines which are not continuous in an edge peripheral direction and extend in the axial direction on an outer peripheral part of the piston 14.

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：JP2002235662A

公开(公告)日：2002-08-23

申请号：JP2001031951

申请日：2001-02-08

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B35/04

Abstract: PROBLEM TO BE SOLVED: To prevent occurrence of fatigue failure and to improve reliability by reducing stress generated near a fixed end of an arm of an elastic body in a vibration type compressor used for a refrigeration cycle, etc. SOLUTION: A part of the elastic body 8 is fixed to a fixed element 12 and a part of the elastic body 8 is fixed to a movable element 9 through fixing member 20a, 20b, 20c and 20d having curved surfaces 21a, 21b, 21c and 21d. The fixed end is deformed along the curved surface of the fixing members at deformation of the arm, and partial stress concentration can be avoided. Thus, the occurrence of the fatigue failure can be prevented and the reliable vibration type compressor can be achieved.