JPS5524555A - Electrical dust precipitator - Google Patents

Electrical dust precipitator

Info

Publication number
JPS5524555A
JPS5524555A JP9769178A JP9769178A JPS5524555A JP S5524555 A JPS5524555 A JP S5524555A JP 9769178 A JP9769178 A JP 9769178A JP 9769178 A JP9769178 A JP 9769178A JP S5524555 A JPS5524555 A JP S5524555A
Authority
JP
Japan
Prior art keywords
fan
foaming material
sound
noise
rib
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
JP9769178A
Other languages
Japanese (ja)
Inventor
Sadahiro Shimada
Ryosuke Sasaoka
Kiminori Kato
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9769178A priority Critical patent/JPS5524555A/en
Publication of JPS5524555A publication Critical patent/JPS5524555A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the fan efficiency and to lower the noise, by providing slanting part and side wall part etc. made of foaming material having specified specific gravity at a fixed position of exhaust air passage and forming so as the inner part not to be seen from exhaust side.
CONSTITUTION: The exhaust air passage 4 is provided surrounding by the partition wall 2, 3 outside of the fan 1 in circumference direction and the slanting part 6 made of polyurethane like foaming material having 0.018W0.026 of specific gravity at the tip end of the tongue-shaped part 5, positioning along the outer circumference of the fan 1 nearly, slowly heightening in rotating direction of the fan 1 and making nearly the same height against the part 5 at the position of the part 5. Also, the passage 4 is formed as volute room by the side wall part 8, 9 made of the above mentioned foaming material and the foaming material rib 11 is joined with the above part 8, 9 and then, is provided corresponding to the part 6 so as the inner fan not to be seen from the exhaust side A directly. Thus, sound is scattered by the part 6 and noise is decreased by the sound absorbing effect of the foaming material and the prevention of directly transmitted sound by the rib 11 etc.
COPYRIGHT: (C)1980,JPO&Japio
JP9769178A 1978-08-09 1978-08-09 Electrical dust precipitator Pending JPS5524555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9769178A JPS5524555A (en) 1978-08-09 1978-08-09 Electrical dust precipitator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9769178A JPS5524555A (en) 1978-08-09 1978-08-09 Electrical dust precipitator

Publications (1)

Publication Number Publication Date
JPS5524555A true JPS5524555A (en) 1980-02-21

Family

ID=14198970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9769178A Pending JPS5524555A (en) 1978-08-09 1978-08-09 Electrical dust precipitator

Country Status (1)

Country Link
JP (1) JPS5524555A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02266096A (en) * 1989-04-06 1990-10-30 Nippon Tetsudo Kensetsu Kodan Constructing method for invert in shield tunnel, and classifier to be used for it

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1318986A (en) * 1969-10-10 1973-05-31 Zenkner K Cross flow blower
JPS5146167B2 (en) * 1973-12-25 1976-12-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1318986A (en) * 1969-10-10 1973-05-31 Zenkner K Cross flow blower
JPS5146167B2 (en) * 1973-12-25 1976-12-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02266096A (en) * 1989-04-06 1990-10-30 Nippon Tetsudo Kensetsu Kodan Constructing method for invert in shield tunnel, and classifier to be used for it

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