公开(公告)号：JPH06137720A

公开(公告)日：1994-05-20

申请号：JP28573292

申请日：1992-10-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  NAKAOKA SEISHI ,  YAKUSHI SHUICHI ,  ITO SHINYA ,  KAWASHIMA TAKAO ,  WADA SATOSHI ,  KAWAI HIDEKI

IPC: F25B43/00

Abstract: PURPOSE:To remove substances produced in a refrigeration system and polymers from harmful substances with a dryer which incorporates a molded solid core which is rich in thermal resistance and consists of alumina, silica gel, calcium sulfide and aluminosilicate. CONSTITUTION:A cap 21 and a strainer 25 are formed and then a solid core 26 is further formed by expanding alumina, silica gel, calcium sulfide and alunosilicate or the like having water absorption and water retentivity.

公开(公告)号：JPH05231305A

公开(公告)日：1993-09-07

申请号：JP3170692

申请日：1992-02-19

Applicant: MATSUSHITA REFRIGERATION

Inventor： MANGYO MASAO ,  WADA SATOSHI

IPC: F04B27/02

Abstract: PURPOSE:To improve amenity by diminishing vibration and noise with high energy efficiency, concerning a compressor to be used for a refrigerator, etc. CONSTITUTION:A two-piston type coolant compressor is constituted of, a crankshaft 25 fixed to the rotor 24 of an electrically-driven element 22, two eccentric shafts 26, 27 provided on this crankshaft, two pistons 28, 29 which are connected to these two eccentric shafts and have mechanisms for making compression simultaneously, and rolling bearings 32, 33 to bear a main crankshaft 30 and a counter crankshaft 31 which are provided on both sides by sandwiching the two eccentric shafts 26, 27 provided on this crankshaft.

公开(公告)号：JPH04284189A

公开(公告)日：1992-10-08

申请号：JP4475291

申请日：1991-03-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAWAI HIDEKI ,  WADA SATOSHI ,  OZAKA MASAHIKO

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To provide a sealed type compressor which generates low noise and is free from the vibration of the case of the compressor by attaching a vibration suppressing member at the vibration part of the case and converting the vibration energy of the case to the thermal energy. CONSTITUTION:A sealed type compressor case 1 and a vibration-suppressing member 9 attached on the vibration part of the case 1 are provided.

公开(公告)号：JPH04191477A

公开(公告)日：1992-07-09

申请号：JP31860290

申请日：1990-11-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： OZAKA MASAHIKO ,  WADA SATOSHI

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To restrict abnormal vibration of the refrigerant gas even if the refrigerant gas is left under the condition possible to generate abnormal vibration by forming a connecting pipe for connecting a suction chamber of a cylinder head and a suction muffler with at least more than two connecting pipes having different length. CONSTITUTION:A suction muffler 35, which is housed in a sealed container with an electric power element and a compressing element, is communicated with a suction chamber 40 through a connecting pipe 37. In this case, the connecting pipe 37 consists of three connecting passages 37a-37c having different length and cross-sectional area, and one end of each connecting passage 37a-37c is opened in a small space 38 inside of the suction muffler 35 at different positions from each other in the axial direction. Even if one of the connecting passages 37a-37c has a natural frequency mode inappropriate for the flow of the refrigerant gas under the some condition and has a danger to generate abnormal vibration of the refrigerant gas, since at least one connecting passage of others has the other natural frequency mode, abnormal vibration of the refrigerant gas is restricted.

公开(公告)号：JPH02275076A

公开(公告)日：1990-11-09

申请号：JP9354889

申请日：1989-04-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI

IPC: F04B39/00 ,  F04B39/12 ,  F04B39/16

Abstract: PURPOSE:To prevent a liquid refrigerant from being collected in the lower part of lubricating oil as well as to eliminate the occurrence of any abnormal noise by installing a pan in a part of a compression element, while installing a hole, adjoining this pan, in the bottom of a suction muffler leading to a suction tube. CONSTITUTION:In the inner part of a hermetically sealed vessel 50, a compression element 51 is housed in the lower part and a motor element 52 in the upper part, respectively. In addition, an unillustrated suction tube interconnecting the inside and outside is looked to this hermetically sealed vessel 50. Moreover, the compression element 51 consists of a cylinder head 53, an interconnecting pipe 54 and a suction muffler 55 or the like. In this case, a pan 3 is installed in a part of the compression element 51, while a hole 1, adjoining this pan 3, is installed in a bottom part of the suction muffler 55. Then, a liquid refrigerant 2 collected in this suction muffler 55 is led into the pan 3 from this hole 1. With this constitution, such a possibility that the liquid refrigerant 2 might be collected in the lower part of lubricating oil in the hermetically sealed vessel 50 is kept back, thus the occurrence of any abnormal noise is eliminated.

公开(公告)号：JPS6480778A

公开(公告)日：1989-03-27

申请号：JP23656987

申请日：1987-09-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： MATSUHASHI IKUHIRO ,  WADA SATOSHI

IPC: F04B39/00 ,  F04B39/12

Abstract: PURPOSE:To reduce the over-compression and reduce the noise by connecting two discharge mufflers with a communicating pipe and connecting the discharge muffler communicated to a discharge chamber to a discharge pipe. CONSTITUTION:The refrigerant gas discharged to a discharge chamber 55a is discharged to a discharge muffler 57 through a communicating hole 56. The refrigerant gas discharged to the discharge muffler 57 is discharged to a discharge muffler 1 through a communicating pipe 2 and filled in the discharge muffler 1. The refrigerant gas of the discharge muffler 57 is thereafter guided to a discharge pipe 58 through a discharge line 59. The refrigerant gas discharged to the discharge chamber 55 is immediately discharged to the discharge muffler 57 and discharge muffler 1 through the communicating hole 56, thus the over-compression can be prevented.

公开(公告)号：JPS61241472A

公开(公告)日：1986-10-27

申请号：JP8059385

申请日：1985-04-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： WADA SATOSHI

IPC: F04B39/02 ,  F04B39/12

Abstract: PURPOSE:To improve compression efficiency by lowering the gas temperature in a casing by lowering the oil temperature by improving the heat exchange efficiency between a sealed container and oil by temporarily accumulating oil by forming a groove part onto the inner wall of the sealed container. CONSTITUTION:A groove part 10 is formed onto the inner wall of a sealed container 1 so that the oil which drops after cooling the cylinderhead 9 of a compressor mechanism part 2 is received. Plural stages of said groove parts are arranged in the vertical direction, and the width of the groove part 10 is made wider in the lower part. The oil accumulated into the upper groove part 10 successively overflows, and flows into the lower groove part, cooled during the flow on the inner wall of the sealed container 1.

公开(公告)号：JP2001280243A

公开(公告)日：2001-10-10

申请号：JP2000093185

申请日：2000-03-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： HORIGUCHI TAKAFUMI ,  IDE TERUMASA ,  HAYASHI YASUSHI ,  OKAMOTO TAKAYUKI ,  WADA SATOSHI

IPC: F04B39/00

Abstract: PROBLEM TO BE SOLVED: To reduce noise of a small-size compressor by making a bottom face of a sealed vessel spherical and increasing rigidity of the bottom face without changing the size of the compressor. SOLUTION: The entire bottom face of the sealed vessel is made spherical, and only snub bar mounting parts on the side wall are circularly extruded in a vertical direction to project, so that the entire bottom face can be made spherical with the overall height of the sealed vessel remaining unchanged, thus increasing the rigidity of the bottom face. Consequently, the noise is reduced.

公开(公告)号：JPH10318146A

公开(公告)日：1998-12-02

申请号：JP13077797

申请日：1997-05-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： MARUYAMA TOMIO ,  HAYASHI YASUSHI ,  WADA SATOSHI ,  MORI YUJI

IPC: F04B39/10 ,  F04B35/04

Abstract: PROBLEM TO BE SOLVED: To reduce closing delay of a delivery lead valve, by making easy separating of the delivery lead valve from the contact surface of a stopper by forming a groove in a contact surface between the stopper and the delivery lead valve. SOLUTION: A plurality of grooves 16 which cross each other are formed on a contact surface between a stopper 15 and a delivery lead valve 10 using a die of a die-cast. In a compressing process, the stopper 15 presses the delivery lead valve 10, and the delivery lead valve is adhered on the stopper 15 through a lubricating oil on their contact surface. A refrigerant gas in a delivery chamber enters crossed grooves 16, therefore, an oil film of the lubricating oil for adhesion is broken, the oil film on the contact surface is easy to be cut, the delivery lead valve 10 separates from the stopper 15, and a delivery hole 17 is sealed. Thus, closing delay of a delivery lead valve 10 is reduced, the period when a high-pressure refrigerant gas in the delivery chamber flows back into a cylinder is decreased, and decrease of volume efficiency can be reduced.

公开(公告)号：JPH0674157A

公开(公告)日：1994-03-15

申请号：JP22691792

申请日：1992-08-26

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F04B39/00

Abstract: PURPOSE:To reduce coolant gas volume leaking from a clearance in a cylinder bore by loosely-fitting a tetrafluoroethylene resin piston ring into a groove which is provided at the outer periphery of a piston freely. CONSTITUTION:A piston 20 which is made of aluminum material and reciprocates inside a cylinder bore 17a with the rotation of a crank shaft 8 through a connecting rod 9 is provided with a groove 20a equipped with two pairs of piston rings 21 made of material whose main element is tetrafluoroethylene resin on its outer periphery. The piston ring 21 is guided to the groove 20a in a clearance between the piston 20 and the cylinder bore 17a so that the piston 20 may not be brought into contact with the cylinder bore 17a during moving. Moreover, a diametrical clearance between the piston and the cylinder bore is set at 1/100-1/300 time as wide as the diameter of the piston. Therefore, it is possible to obtain stable cooling performance even when leaking loss increases due to pressure ratio increase at the time of replacing coolant CFC12, which is generally used, with HFC134a.