公开(公告)号：JPH05126046A

公开(公告)日：1993-05-21

申请号：JP28844191

申请日：1991-11-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  SAEKI YUJI ,  KAWAI HIDEKI ,  OZAKA MASAHIKO

IPC: F04B39/00

Abstract: PURPOSE:To enhance the durability and reliability of bearings used as well as to stabilize the efficiency and startability of a motor in order to enhance the efficiency of a hermetic type motor driven compressor used for a refrigerator and the like. CONSTITUTION:A device is made up of a crank shaft 20 fixed onto a rotor 5 acting as a motor driven element 2, an eccentric shaft 21 provided for the crank shaft 20, shaft sections 20a and 20b provided for both the sides of the eccentric shaft 21 in the axial direction, and of two ball bearings 23 and 24 rotatably supporting the crank shaft 20.

公开(公告)号：JPH04308373A

公开(公告)日：1992-10-30

申请号：JP7092391

申请日：1991-04-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  KAWAI HIDEKI ,  OZAKA MASAHIKO

IPC: F04B39/00 ,  F16C19/06

Abstract: PURPOSE:To prolong the life of a ball bearing and heighten its reliability in the case of using the ball bearing regarding the high efficiency of a closed-type motor-driven compressor used for a refrigerator or the like, and facilitate assembling work performance and reduce the number of parts by applying pre-load to the ball bearing without using another means. CONSTITUTION:A closed-type motor-driven compressor is formed of a master crankshaft 20a, an auxiliary crankshaft 20b, a ball bearing 23 press-fitted to the master crankshaft 20a, a sliding bearing 24 with the auxiliary crankshaft 20b fitted thereto, and a housing 25 with which the outer wheel 23a of the ball bearing 23 is brought into contact.

公开(公告)号：JPH04255579A

公开(公告)日：1992-09-10

申请号：JP1434691

申请日：1991-02-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  KAWAI HIDEKI ,  WADA SATOSHI

IPC: F04B39/00 ,  F04B39/06 ,  F04B39/12 ,  F16L11/12

Abstract: PURPOSE:To provide a compressor of suppressing a temperature rise with a low noise by damping on a transmitting route the vibration which is caused by pulsation of a delivery flow and action of electrically-driven and compressed elements, and further shortening the transmitting route, in the case of a closed type compressor used in a refrigerating cycle of a freezing refrigerator or the like. CONSTITUTION:Delivery pipes 11, 21 formed of spiral tubes are provided halfway on a transmitting route of delivery gas.

公开(公告)号：JPH03290073A

公开(公告)日：1991-12-19

申请号：JP9245990

申请日：1990-04-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  WADA SATOSHI ,  MATSUHASHI IKUHIRO ,  YAMADA TOSHIHIRO ,  KITA ICHIRO ,  YAKUSHI SHUICHI ,  OTORI HIDEKI

IPC: F04B39/00 ,  F04B39/06 ,  F04B39/12

Abstract: PURPOSE:To reduce the coolant staying in a suction chamber and prevent the heating of coolant gas by inserting the communication pipe of a suction muffler formed by the material having a low thermal conductivity into an insertion hole on a cylinder head and forming an opened port opposed to the suction hole. CONSTITUTION:As for a compression element 3 accommodated in a sealed container 1, a cylinder 6 is installed on a cylinder head 4 through a valve plate 5 by a screw N. In this case, an insertion pipe 7 is inserted into a suction muffler 9 made of synthetic resin, and a communication pipe 10 which is integrally molded with the lower part 9b of a suction muffler 9 is allowed to penetrate through the insertion hole 4a of the cylinder head 4, and a part of the pipe 10 is positioned in a suction chamber 4b. The communication pipe 10 is formed into cylindrical form, and the undersurface is formed into an arcuate form so as to contact the undersurface of the suction chamber 4b, and an opened port 10b is formed upwardly from the lower edge at the position faced to the suction hole 5a of the valve plate 5. Accordingly, the thermal influence supplied from the cylinder head 4 is suppressed, and the heating of the coolant gas is prevented, and the volume efficiency is improved.

公开(公告)号：JPH03290072A

公开(公告)日：1991-12-19

申请号：JP9245890

申请日：1990-04-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  WADA SATOSHI ,  MATSUHASHI IKUHIRO ,  YAMADA TOSHIHIRO ,  KITA ICHIRO ,  YAKUSHI SHUICHI ,  OTORI HIDEKI

IPC: F04B39/00 ,  F04B39/06 ,  F04B39/12

Abstract: PURPOSE:To improve assembly work performance and increase volume efficiency by inserting the communication pipe of a suction muffler shaped by the material having the low thermal conductivity in an insertion hole of a cylinder head and installing a cap having the low thermal conductivity on the periphery of a suction hole and the penetration chamber of the cylinder head. CONSTITUTION:As for a compression element 3 accommodated in a sealed container 1, a cylinder head 4 is installed on one edge side of a cylinder 6 through a valve plate 5 by a screw N. In this case, an insertion pipe 7 is inserted into a suction muffler 9 made of synthetic resin, and a communication pipe 10 which is integrally molded with the lower part 9b of the suction muffler 9 is inserted into the insertion hole 4a of the cylinder head 4. A cap 11 is arranged in a penetration chamber 4b, and the communication pipe 10 of the suction muffler 9 penetrates through the insertion hole 4a of the cylinder head 4 and the hole 11c of the cap 11, and a part of the pipe 10 is positioned in the cap 11. Accordingly, the sucked gas is introduced into the suction hole without being warmed by the cylinder head 4 made of metal, and the volume efficiency is improved.

公开(公告)号：JPS6460783A

公开(公告)日：1989-03-07

申请号：JP21571687

申请日：1987-08-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  HASHIZUME KYUSHICHI

IPC: F04B39/12 ,  F04B39/00

Abstract: PURPOSE:To prevent over-compression and reduce input by providing two discharge mufflers in a cylinder block to afford communication between a discharge chamber and the two discharge mufflers through a communicating hole. CONSTITUTION:A cylinder block 53 is provided with communicating holes 56, 1 symmetrical about the axis of a cylinder 54, and discharge mufflers 57, 2 are mounted symmetrically about the axis of cylinder 54. These discharge mufflers 2, 57 communicate to each other through a communicating pipe 3. Refrigerant gas discharged to a discharge chamber 55a passes through the communicating holes 1, 56 to be respectively discharged to the discharge mufflers 2, 57. The refrigerant gas discharged to the discharge muffler 2 passes through the communicating pipe 3 to be introduced to the discharge muffler 57, passes through a discharge line 59 together with the refrigerant gas in the discharge muffler 57 to be introduced into a discharge pipe 58. Thus, over- compression can be prevented.

公开(公告)号：JPH06323256A

公开(公告)日：1994-11-22

申请号：JP11446693

申请日：1993-05-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  WADA SATOSHI ,  SAEKI YUJI ,  KOMORI HIROYUKI

IPC: F04B39/10 ,  F04B39/12

Abstract: PURPOSE:To make a suction valve open while twisting it and satisfactorily follow a piston to increase suction efficiency, by positioning the axis of a tray pan part installed at one end of a suction port eccentrically from the center of an arc which forms a part of the valve end part of the suction valve. CONSTITUTION:When a piston 10 is reciprocated, refrigerant gas passes a suction port 12 of a valve plate 11, and sucked into a cylinder 6 by the opening and closing of a suction valve 13. In this case, the suction valve 13 opens the suction port 12 with its valve end part 13a twisted, and is set in parallel with the suction port 12. Namely a tray pan part 12a is installed at one end of the suction port 12, and an axis 12b is positioned eccentrically from the center 13b of an arc which forms a part of the valve end part 13a. Accordingly the suction valve 13 makes a torsional motion of relatively low rigidity, and satisfactorily follows the reciprocating motion of the piston 10. Then the refrigerant gas passes a delivery port 3 of the valve plate 11 after it is compressed in the cylinder 6, and is discharged according to the opening and closing of a delivery valve 4.

公开(公告)号：JPH06264868A

公开(公告)日：1994-09-20

申请号：JP5047693

申请日：1993-03-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  SAEKI YUJI ,  KAWAI HIDEKI ,  WADA SATOSHI

IPC: F04B39/00

Abstract: PURPOSE:To provide a sealed compressor used for the refrigerating cycle of a refrigerator, requiring a low input, and having high reliability. CONSTITUTION:A sealed container 21 stores an electric element 22 and a compression element 23. A crank shaft 24 has an eccentric section 25, and an upper bearing 26 and a lower bearing 27 are arranged above and below the eccentric section 25. A holder 28a has a thick section 28c over the whole periphery of a bearing holding section 28b, it is fixed to the compression element 23 via the fixing sections 28d, 28e on a cylinder 29 side and a fixing section on the compression stroke side according to the rotating direction of the crank shaft 24, and the center surface 32 perpendicular to the axial direction 31 of the upper bearing 26 is formed on the upper side of the axial direction 31 against a plane 30 formed by the fixing sections 28d, 28e.

公开(公告)号：JPH05288155A

公开(公告)日：1993-11-02

申请号：JP8356692

申请日：1992-04-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  KAWAI HIDEKI ,  SAEKI YUJI ,  WADA SATOSHI

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To provide a closed type compressor of low noise and low vibration in the refrigerating cycle of a refrigerator or the like. CONSTITUTION:In a closed container 14 provided internally with a motor-driven element 5 and a compression element 6, an upper cover 11 and a lower container 12 are mutually connected by the welding edge 13 of the lower container 12. A plane X having the welding edge 13 within the plane is orthogonal to planes Y17, Z18 having, within the planes, a centerline 15 which has, within the line, the center point of an optional curved face forming the upper face of the upper cover 11 and the center point of an optional curved face forming the bottom face of the lower container 12. An optional curve C19 forming the closed container 14 is formed of asymmetric curvature as and line segment length unequal to CX20, CY21, CZ22 existing in the positions symmetric to the respective planes X16, Y17, Z18.

公开(公告)号：JPH05164049A

公开(公告)日：1993-06-29

申请号：JP33311191

申请日：1991-12-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI ,  KAWAI HIDEKI ,  SAEKI YUJI ,  OZAKA MASAHIKO

IPC: F04B39/10

Abstract: PURPOSE:To improve a volumetric efficiency by using a spherical delivery valve, and also reduce noise in a valve device of a reciprocating compressor used in a refrigerator and so on. CONSTITUTION:A valve device for a reciprocating compressor is composed of a recess part 21 formed in a valve plate 4, a resinous sheet 22 fitted in the recess part 21, a delivery valve seat 24 arranged on the sheet 22, a spherical delivery valve 25, a valve presser 26 having an inner surface shape in conformity with a shape of the delivery valve 25, a coil spring 27 and a holder 28 into which the delivery valve 25, the valve presser 26 and the coil spring 27 are embedded/inserted.