公开(公告)号：JP2000249061A

公开(公告)日：2000-09-12

申请号：JP5003599

申请日：1999-02-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： KITA ICHIRO ,  UMEOKA IKUTOMO ,  KANESHIRO KENJI ,  IDE TERUMASA ,  HORIGUCHI TAKAFUMI ,  HAYASHI YASUSHI ,  MARUYAMA TOMIO

IPC: F04B39/00 ,  F04B39/12

Abstract: PROBLEM TO BE SOLVED: To decrease the occurrence of noise due to resonance of a shell in a compressor used in a domestic refrigerator or the like. SOLUTION: A fulcrum fixing part 16 is fixed at the resonance node part 21 of the resonance mode of a shell 2, a working contact surface part 18 is forced to press contact with a resonance belly part 20 through oil 22. The fulcrum fixing part 16 and the working contact surface part 18 reduce the occurrence of noise by adding a baffle plate 19, coupled by a coupling vibration part 17, to the shell 2.

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：JP2002130132A

公开(公告)日：2002-05-09

申请号：JP2000330311

申请日：2000-10-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： UMEOKA IKUTOMO ,  KITA ICHIRO ,  YAGI AKIO ,  KANESHIRO KENJI ,  MATSUMOTO TAKESHI ,  HAYASHI YASUSHI ,  MARUYAMA TOMIO

IPC: F04B39/12

Abstract: PROBLEM TO BE SOLVED: To reduce the noises of a closed type motor-driven compressor for use in a household refrigerator or the like by reducing the vibration of the closing case of the compressor. SOLUTION: The closing case 2 formed of a plurality of curved surfaces for storing a motor-driven compressing element 8 includes a different curved surface 23 formed on the ridge 21 of the curved surface 22 to divide the resonance peak of the curved surface 22 and reduce a resonance peak level so as to reduce the vibration of the closing case 2 and the noises of the compressor.

公开(公告)号：JP2003172265A

公开(公告)日：2003-06-20

申请号：JP2001371248

申请日：2001-12-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAGI AKIO ,  UMEOKA IKUTOMO ,  MATSUMOTO TAKESHI ,  HAYASHI YASUSHI ,  MARUYAMA TOMIO

IPC: F04B39/00 ,  F04B39/02

Abstract: PROBLEM TO BE SOLVED: To enhance a muffling effect in a muffling space of a suction muffler. SOLUTION: The suction muffler forming a muffling space is provided with two chambers; a communication space communicating these two chambers; a first communication passage for communicating a movable valve and a muffling space and extending and opened into the muffling space; a second communication passage for communicating the inside of a closed container and the muffling space and extending and opened into the muffling space; and openings in the muffler space of the first communication passage and the second communication passage. Since it is opened to any one of two chambers and the other of the two chambers forms a resonance type muffler coincident with a columnar resonance frequency in the closed container, a pulse of pressure of a coolant gas generated when the coolant gas is suctioned to a compression chamber is damped by the resonance muffler. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2001336478A

公开(公告)日：2001-12-07

申请号：JP2000154213

申请日：2000-05-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： MARUYAMA TOMIO

IPC: F04B39/12 ,  F04B39/00 ,  H02K7/14

Abstract: PROBLEM TO BE SOLVED: To suppress an increase in noise level resulting from an increase in discharging pulsation by lessening a decrease in a space volume of a discharging chamber due to an oil stagnation by communicating each lower part of discharging chambers below suction chambers extending to the both sides of the suction chambers of a cylinder head and letting a refrigerant flow in an enclosed electric compressor. SOLUTION: A communication path 18 under suction chamber 15 is set up with each lower part at both sides of discharge 16, the refrigerant flows to a discharging pass hole 11 passing through the both sides of the discharging chamber 16, thereby the oil stagnation caused by the stagnation of the refrigerant is not caused, and the decrease in space volume of the discharging chamber 16 becomes small.