公开(公告)号：JP2000088277A

公开(公告)日：2000-03-31

申请号：JP25655198

申请日：1998-09-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI HIDEKI ,  SUMOTO SHIGERU

IPC: F24F13/20 ,  F24F1/00

Abstract: PROBLEM TO BE SOLVED: To reduce air cutting sound by securing the limit of deflection of a spiral wire member due to a pushing force from the front surface of a fan guard so as to be lower than a given value and reduce the number of radial wire members for the fan guard. SOLUTION: The pitch of a spiral wire member 7a for a fan guard 5a is set so as to be wide near the center of the fan guard 5a and so as to be narrow near the outer periphery of the fan guard 5 whereby the limit of deflection of the spiral wire member 7a due to a pushing force from the front surface of the fan guard can be secured so as to be lower than a given value while the number of radial wire members can be reduced whereby air cutting sound or hissing sound of a fan can be lowered.

公开(公告)号：JP2003156280A

公开(公告)日：2003-05-30

申请号：JP2001351460

申请日：2001-11-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI HIDEKI ,  KAWASAKI TATSUYA ,  TANIGUCHI ATSUSHI ,  MATSUKAWA HIROTAKA ,  HAYASHI TOMOHIRO

IPC: F25D11/02 ,  F25B1/00 ,  F25B5/04

Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator furnished with a refrigerating cycle to efficiently change two evaporators by a refrigerant control valve. SOLUTION: It is possible to provide the refrigerator of high efficiency having a three-way valve 310 on the high pressure side of the refrigerating cycle, furnished with a refrigerating circuit diverted to a refrigerating room evaporator 305 and a freezing room evaporator 306, arranging a refrigerant flow rate variable device 307 on the downstream of the refrigerating room evaporator 306 and improving refrigerating efficiency by furnishing the circulating refrigerant circuit on a compressor 308.

公开(公告)号：JP2002276987A

公开(公告)日：2002-09-25

申请号：JP2001072236

申请日：2001-03-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAKAI HIDEKI ,  IEMURA TETSUYA

IPC: F24F13/22 ,  F24F1/00

Abstract: PROBLEM TO BE SOLVED: To provide a ceiling embedded type air conditioner having a structure of drain cap where drain water can be discharged or stored without applying or removing a drain cap. SOLUTION: The drain cap structure comprises an internally threaded drain hole 8a made in the bottom face of a drain pan, a stopper 9 at the upper part of the drain hole 8a, an externally threaded drain cap 10a having a central tubular through hole, a water stopper 11a having a step structure of reverse shape to the stopper 9a, and a resilient means, i.e., a spiral spring 12.

公开(公告)号：JP2001141275A

公开(公告)日：2001-05-25

申请号：JP32054699

申请日：1999-11-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： MAEDA MOTONORI ,  SAKAI HIDEKI

IPC: A63F7/02 ,  F24F7/00 ,  F24F7/007 ,  F24F7/06 ,  F24F11/02

Abstract: PROBLEM TO BE SOLVED: To perform exhaust of the same air flow through a plurality of individual exhaust openings and individually perform starting and stopping, in a duct type exhaust device. SOLUTION: A plurality of branch ducts 3 situated at a main duct 2 of a duct type exhaust system are provided at each of the tips with a forced exhaust fan 15. A sensor switch to automatically perform starting and stopping of operation is mounted on the exhaust system. During a stop, the exhaust fan 15 forms resistance and during operation, the exhaust fan 15 exhausts a specified amount of airflow and energy saving operation is realized.