公开(公告)号：JPH05157048A

公开(公告)日：1993-06-22

申请号：JP31893291

申请日：1991-12-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYOSHI KYOZO ,  ONO TAKESHI ,  IWAI HARUHIKO ,  NAKAOKA MASASHI ,  TSUCHIYA KOICHI ,  YAKUSHI SHUICHI

IPC: F04B39/00

Abstract: PURPOSE:To lower the overall height of a refrigerant compressor by arranging an insulating material which is given drawing between coils of an electric element and a metal part of a compression element. CONSTITUTION:An insulating material 10 which is given drawing is arranged between an electric element 2 elastically supported in a closed container 1 and a compression element 3 and coils 5 and 6 of the electric element 2 and a metal part 9 of the compression element 3. This insulating material 10 is a polyester film which is given drawing. As this polyester film 10 is given drawing, it has elasticity and the insulating material is not dislocated or removed during operation of a refrigerant compressor. In the compressor so constituted, the dimension of a clearance between the coil 5 of the electric element 2 and the metal part 9 of the compression element 3 should be only the thickness of the polyester 10. By this, the overall height of the compressor can be lowered than before.

公开(公告)号：JPH02173386A

公开(公告)日：1990-07-04

申请号：JP32663988

申请日：1988-12-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKETOMI KAZUHIDE ,  WATAKABE SHUNZO ,  TSUCHIYA KOICHI

IPC: F04C29/02 ,  F04C29/06

Abstract: PURPOSE:To enable reliable securing of an oil pipe and to prevent deformation of an auxiliary side housing by a method wherein a plurality of prepared holes are formed in the delivery cover, on the reverse side to a cylinder, of the auxiliary side housing by a burring process, and the support part of the oil pipe is fastened thereagainst by means of a screw and bolt. CONSTITUTION:By fastening an auxiliary side housing 19 against a main side housing 6 by means of a head bolt 23 in a state to overlap a partition plate 18 to a delivery cover 20, the round hole of A chamber part 20a is adhered to the outer size staged part of a bearing 19a of the auxiliary side housing 19. By fastening a support 21 of an oil pipe 15 against a chamber part 20a by means of a bolt 22, the auxiliary side housing 19 side of the support 21 is adhered to the end surface, on the opposite side to a cylinder 5, of the bearing part 19a. Thus, refrigerant gas discharged from a compression chamber 8 is delivered through the delivery cover 20 without leaking through the delivery chamber part 20a. Oil 4 from the interior of the oil pipe 15 is fed to a crank shaft 9 through the lead of a coil spring 14 without leaking past the bearing part 19a.

公开(公告)号：JPH07174091A

公开(公告)日：1995-07-11

申请号：JP31964993

申请日：1993-12-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUCHIYA KOICHI ,  KANZAKI AKIO

IPC: F04C18/356

Abstract: PURPOSE:To improve the durability of a compressor by preventing the abrasion of a vane and a roller by the slide contact between the vane and the roller which are strengthened by each composite hardened film consisting of a ceramic coating layer and a nitrification processing layer set under the ceramic layer. CONSTITUTION:A shaft 2, roller 6, and a cylinder 4 are provided, and a vane 7 which is accommodated in the groove of the cylinder 4 and whose top end part makes slide contact with the outer periphery of the roller 6 is provided. The vane 7 consists of iron group basic members, and in the nitrification processing where a compound layer containing Fe-N(-C) as main constituent is not generated, only a diffusion layer 7a in which Fe4N exists in the basic member is generated. Then, at least the slide contact surface of the roller is applied with the ceramic coating 7b. Accordingly, the coagulation abrasion between the vane 7 and the roller 6 can be avoided for a compressor having the severe load, by the vane 7 which is strengthened by the composite hardened film having the ceramic coating layer 7b formed.

公开(公告)号：JPH05133331A

公开(公告)日：1993-05-28

申请号：JP29549891

申请日：1991-11-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： NAKAOKA MASASHI ,  TSUCHIYA KOICHI ,  YAKUSHI SHUICHI ,  MORI YUJI ,  NORO TORU ,  IDE TERUMASA

IPC: F04B39/00

Abstract: PURPOSE:To decrease a temperature rise in an electric component cover by using a material of heat insulation for a fixture of the electric component cover, and providing the electric component cover for covering electric component parts to heat-insulate a closed type electric motor compressor. CONSTITUTION:In an electric component protecting device for a closed type electric motor compressor 1, a steel plate of sandwich structure with plastic in the inside having heat insulation is used for a fixture 4. Or the fixture 4 is brought into contact with the closed type electric motor compressor 1 only by a minimum required limit so that a total unit is covered with an electric component cover 3. Accordingly, by using a material having heat insulation for the fixture 4 for fixing the electric component cover 3 connected to the closed type electric motor compressor 1, heat conduction from the closed type electric motor compressor 1 can be prevented. In this way, also a temperature rise in the electric component cover 3 is decreased to reduce a temperature rise of a shielded wire in the electric component cover 3.

公开(公告)号：JPH04311687A

公开(公告)日：1992-11-04

申请号：JP7920091

申请日：1991-04-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUCHIYA KOICHI ,  MANGYO MASAO ,  KITA ICHIRO

IPC: F04B39/00

Abstract: PURPOSE:To damp discharge gas pulsation effectively without causing the vibration-noise increase of a motor-driven compressor to a closed container due to a discharge pipe. CONSTITUTION:A discharge pipe 17 is connected to a cover 16 for the discharge muffler 9 of a cylinder block, while a second discharge muffler 19 is disposed at the cover 16 through a communicating pipe 18.

公开(公告)号：JPH0674155A

公开(公告)日：1994-03-15

申请号：JP22688592

申请日：1992-08-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： IDE TERUMASA ,  ONO TAKESHI ,  TSUCHIYA KOICHI

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To stabilize the noise and oscillation of a compressor by providing a straight part at the one turn of the end edge of a cylindrical spring which is inserted in a discharge pipe, and forming inner diameter facing the straight part smaller than the outer diameter of the discharge pipe for giving a dislocation preventing function to the cylindrical spring. CONSTITUTION:A discharge side muffler 6 which is disposed at a compressor element 2 elastically-supported inside a closed container 1 is connected with a discharge side connecting pipe 8 which is silver-soldered to the container 1 by the discharge pipe 7 where a cylindrical spring 9 is inserted. Besides, the inner diameter which faces the straight part 10 of one turn of the end edge of the cylindrical spring 9 is formed smaller than the outer diameter 12 of the discharge pipe 7. Therefore, even if a load is applied to the cylindrical spring 9 which is inserted in the discharge pipe 7 at the time of transportation or starting/stopping a compressor, the cylindrical spring 9 is prevented from being dislocated, so it is possible to ensure the stable oscillation transmission damping function of the cylindrical spring 9.

公开(公告)号：JPH05133332A

公开(公告)日：1993-05-28

申请号：JP29549991

申请日：1991-11-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAKUSHI SHUICHI ,  TSUCHIYA KOICHI ,  MORI YUJI ,  NORO TORU ,  IDE TERUMASA ,  NAKAOKA MASASHI

IPC: F04B39/00

Abstract: PURPOSE:To smoothly perform a heat exchange between the inside/outside of an electric component cover so as to decrease a temperature rise in the electric component cover by providing holes in the electric component cover, and further pasting cloths, constituted of holes smaller than a size of water molecule, to an internal surface of the electric component cover. CONSTITUTION:Electric component parts 2 externally mounted on a closed type electric motor-driven compressor 1, electric component cover 3 for covering the electrical component parts 2 and cloths 6 pasted to an internal surface of this electric component cover 3 are provided. One or more holes 5 are provided in the electric component cover 3, and the cloths 6 are constituted of holes smaller than size of a water molecule. In this way, a heat exchange of air between the inside/outside of the electric component cover 3 is smoothely performed by the holes 5, provided in the electric component cover 3, to decrease a temperature rise in the electric component cover 3 and also a temperature rise of a shielded wire in the electric component cover 3.

公开(公告)号：JPH05126044A

公开(公告)日：1993-05-21

申请号：JP28844091

申请日：1991-11-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： NORO TORU ,  TSUCHIYA KOICHI ,  YAKUSHI SHUICHI ,  MORI YUJI ,  IDE TERUMASA ,  NAKAOKA MASASHI

IPC: F04B53/00 ,  F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To enhance damping effect for oscillation and sound suppression as well at the tubing section by fixing a cylindrical spring which is inserted into the tubing within a compressor main body so as to be incorporated, by a projected section formed in the tubing. CONSTITUTION:Refrigerant gas which is discharged out of a cylinder 1 by means of the reciprocal movement of a piston 6, flows in the inside of a tubing provided within a hermetic container 7 through a discharge valve chamber 2 and a discharge side muffler 3, so that it then flows into the high pressure side of a refrigerant cycle with a discharge side connecting pipe 8 connected. In a compressor constituted as mentioned herein above, when a cylindrical spring 5 is closely attached to the tubing 4 with a projected section (draw-string) 9 provided for a part of the tubing, maximum damping effect for oscillation and maximum sound suppression can be exhibited at the tubing section because the constitution does not allow the cylindrical spring 5 to be dislocated at all.

公开(公告)号：JPH0510260A

公开(公告)日：1993-01-19

申请号：JP16274691

申请日：1991-07-03

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  ONO TAKESHI ,  TSUCHIYA KOICHI

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To reduce noise of a hermetic type compressor used for a refrigerator, etc., by suppressing the pulsation of the discharged gas and eliminating the blow-back of the intake gas. CONSTITUTION:A bellows shaped flexible cap 31 is installed in a discharge chamber 30, and arranged, keeping a gap from a communicating pipe 35, and a suction hole 37 is formed on an intake muffler 39, and opened and closed by a reed 38.

公开(公告)号：JPH0466794A

公开(公告)日：1992-03-03

申请号：JP18087290

申请日：1990-07-09

Applicant: MATSUSHITA REFRIGERATION

Inventor： NAKAOKA MASASHI ,  MIYOSHI KYOZO ,  YOSHIDA SHIRO ,  SAKAMAKI SABURO ,  ONO TAKESHI ,  TSUCHIYA KOICHI ,  IWAI HARUHIKO

IPC: F04C29/00

Abstract: PURPOSE:To obtain good electrical insulating properties by forming one side of the end of the coil of the stator of an induction motor at a high stage and the other side at a low stage, and disposing the low stage on the side of the induction motor in contact with refrigerating machine oil, which induction motor drives a compression element. CONSTITUTION:The coil of the stator 2 of an induction motor 4 comprises a low-stage coil end 42a to which a small amount of molding of a coil end is allocated and a high-stage coil end 42b to which a large amount of molding of the coil end is allocated. The low-stage coil end 42a is disposed on the side of refrigerating machine oil 25 containing a refrigerant. The length by which the coil of the induction motor 4 is immersed in the refrigerant-contained refrigerating machine oil 25 is thereby reduced. The amount of electricity that leaks from the coil of a charged portion to a sealed container is thus reduced.