JPS55107100A - Blower driven by electric motor - Google Patents

Blower driven by electric motor

Info

Publication number
JPS55107100A
JPS55107100A JP1323979A JP1323979A JPS55107100A JP S55107100 A JPS55107100 A JP S55107100A JP 1323979 A JP1323979 A JP 1323979A JP 1323979 A JP1323979 A JP 1323979A JP S55107100 A JPS55107100 A JP S55107100A
Authority
JP
Japan
Prior art keywords
air flow
absorbing material
sound absorbing
walls
electric motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1323979A
Other languages
Japanese (ja)
Inventor
Masao Hata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1323979A priority Critical patent/JPS55107100A/en
Publication of JPS55107100A publication Critical patent/JPS55107100A/en
Pending legal-status Critical Current

Links

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To suppress noises developed by the blowers driven by an electric motor by forming the walls of the air flow duct with a sound absorbing material for a return guide vane, and to enable easy attachement of the sound absorbing material without largely changing the present construction.
CONSTITUTION: By formation of walls of the air flow duct for a return guide vane with the sound absorbing material 8, particular pulsating sound waves in the air flow are absorbed by the walls while the air flow passes through the duct. Accordingly the noise sources contained in the following air flow can be reduced, and furthermore, the sound absorbing material can be added without largely changing the present construction.
COPYRIGHT: (C)1980,JPO&Japio
JP1323979A 1979-02-09 1979-02-09 Blower driven by electric motor Pending JPS55107100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1323979A JPS55107100A (en) 1979-02-09 1979-02-09 Blower driven by electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1323979A JPS55107100A (en) 1979-02-09 1979-02-09 Blower driven by electric motor

Publications (1)

Publication Number Publication Date
JPS55107100A true JPS55107100A (en) 1980-08-16

Family

ID=11827636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1323979A Pending JPS55107100A (en) 1979-02-09 1979-02-09 Blower driven by electric motor

Country Status (1)

Country Link
JP (1) JPS55107100A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266280A (en) * 1985-05-21 1986-11-25 Dainippon Printing Co Ltd Automatic die-stamper
JPS6216798U (en) * 1985-07-17 1987-01-31
US5110266A (en) * 1989-03-01 1992-05-05 Hitachi, Ltd. Electric blower having improved return passage for discharged air flow

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61266280A (en) * 1985-05-21 1986-11-25 Dainippon Printing Co Ltd Automatic die-stamper
JPS6216798U (en) * 1985-07-17 1987-01-31
JPH045758Y2 (en) * 1985-07-17 1992-02-18
US5110266A (en) * 1989-03-01 1992-05-05 Hitachi, Ltd. Electric blower having improved return passage for discharged air flow

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