JPS54104013A - Propeller fan with disk ring - Google Patents

Propeller fan with disk ring

Info

Publication number
JPS54104013A
JPS54104013A JP1045678A JP1045678A JPS54104013A JP S54104013 A JPS54104013 A JP S54104013A JP 1045678 A JP1045678 A JP 1045678A JP 1045678 A JP1045678 A JP 1045678A JP S54104013 A JPS54104013 A JP S54104013A
Authority
JP
Japan
Prior art keywords
propeller fan
disk ring
ring
blade
wide
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
JP1045678A
Other languages
Japanese (ja)
Inventor
Yoji Sekine
Nobuo Kinugawa
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 JP1045678A priority Critical patent/JPS54104013A/en
Publication of JPS54104013A publication Critical patent/JPS54104013A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To aim at making small-sized device with low cost by devicing an improved propeller fan by which wind can be blown out in wide-angled conical form (inclined to the axial direction) without using any fixed wind tunnel or shelter.
CONSTITUTION: A disk ring 5 is fitted on the rear edge 4d of a blade 4 of propeller fan 2. In this case, the outside diameter E of the abovementioned ring shall remain within an extent of 0.6D W D (D=outside diameter of blade) while the inside diameter F shall be 0.85 D or less and at the same time 0.9E or less. By this construction, the pressure difference of the radial direction becomes larger than that of the axial direction because a centrifugal fan action produced by the disk ring 5 is included, so that the blowout direction can be made in wide-angled conical form by impeller's own action. And the blowing-out of the air c without touching the disk ring 5 prevents well pressure loss and contributes to improving the blast efficiency, and thus the total efficiency of the propeller fan 2 can be enhanced.
COPYRIGHT: (C)1979,JPO&Japio
JP1045678A 1978-02-03 1978-02-03 Propeller fan with disk ring Pending JPS54104013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1045678A JPS54104013A (en) 1978-02-03 1978-02-03 Propeller fan with disk ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1045678A JPS54104013A (en) 1978-02-03 1978-02-03 Propeller fan with disk ring

Publications (1)

Publication Number Publication Date
JPS54104013A true JPS54104013A (en) 1979-08-15

Family

ID=11750636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1045678A Pending JPS54104013A (en) 1978-02-03 1978-02-03 Propeller fan with disk ring

Country Status (1)

Country Link
JP (1) JPS54104013A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54157311A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Propeller fan with disk ring
JPS54157309A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Outdoor unit for separate type air conditioner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271782A (en) * 1969-03-11 1972-04-26 Lyonnaise Ventilation Improvements in or relating to fans
JPS5310455A (en) * 1976-06-19 1978-01-30 Ibm Interference measurement method
JPS5377319A (en) * 1976-12-20 1978-07-08 Toyota Central Res & Dev Lab Inc Axial-flow fan

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1271782A (en) * 1969-03-11 1972-04-26 Lyonnaise Ventilation Improvements in or relating to fans
JPS5310455A (en) * 1976-06-19 1978-01-30 Ibm Interference measurement method
JPS5377319A (en) * 1976-12-20 1978-07-08 Toyota Central Res & Dev Lab Inc Axial-flow fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54157311A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Propeller fan with disk ring
JPS54157309A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Outdoor unit for separate type air conditioner

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