JPS6454148A - Ventilation fan - Google Patents

Ventilation fan

Info

Publication number
JPS6454148A
JPS6454148A JP21052787A JP21052787A JPS6454148A JP S6454148 A JPS6454148 A JP S6454148A JP 21052787 A JP21052787 A JP 21052787A JP 21052787 A JP21052787 A JP 21052787A JP S6454148 A JPS6454148 A JP S6454148A
Authority
JP
Japan
Prior art keywords
air
shutter
adapter
constitution
delivered
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
JP21052787A
Other languages
Japanese (ja)
Inventor
Michihisa Yonekichi
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 Ecology Systems Co Ltd
Original Assignee
Matsushita Seiko 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 Seiko Co Ltd filed Critical Matsushita Seiko Co Ltd
Priority to JP21052787A priority Critical patent/JPS6454148A/en
Publication of JPS6454148A publication Critical patent/JPS6454148A/en
Pending legal-status Critical Current

Links

Landscapes

  • Ventilation (AREA)

Abstract

PURPOSE:To reduce the noise level by disposing a shutter for preventing outside air from entering on the delivery side of a centrifugal fan and an ellipse- sectioned air guider at the leading edge of the shutter. CONSTITUTION:When a centrifugal fan 5 is operated, the room air is vented to the outside through outlet 6, interior of adapter 7 and duct 8 as shown by arrows. The shutter 10 is forced open by the air pressure. Because an elipse- sectioned air guider 11 is disposed at the leading edge of the shutter 10, the draft resistance of the delivered air is reduced, and the air is delivered through the periphery of the shutter 10 and the interior of the adapter 7 without causing swirls. By this constitution, the noise level can be reduced.
JP21052787A 1987-08-25 1987-08-25 Ventilation fan Pending JPS6454148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21052787A JPS6454148A (en) 1987-08-25 1987-08-25 Ventilation fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21052787A JPS6454148A (en) 1987-08-25 1987-08-25 Ventilation fan

Publications (1)

Publication Number Publication Date
JPS6454148A true JPS6454148A (en) 1989-03-01

Family

ID=16590840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21052787A Pending JPS6454148A (en) 1987-08-25 1987-08-25 Ventilation fan

Country Status (1)

Country Link
JP (1) JPS6454148A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07214105A (en) * 1994-01-10 1995-08-15 Tippins Inc Casting and rolling method and device of casting and rolling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07214105A (en) * 1994-01-10 1995-08-15 Tippins Inc Casting and rolling method and device of casting and rolling

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