JPS56118598A - Centrifugal blower - Google Patents

Centrifugal blower

Info

Publication number
JPS56118598A
JPS56118598A JP2051780A JP2051780A JPS56118598A JP S56118598 A JPS56118598 A JP S56118598A JP 2051780 A JP2051780 A JP 2051780A JP 2051780 A JP2051780 A JP 2051780A JP S56118598 A JPS56118598 A JP S56118598A
Authority
JP
Japan
Prior art keywords
impeller
outlet
spiral casing
blower
angle
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
JP2051780A
Other languages
Japanese (ja)
Inventor
Isao Tsuji
Haruo Sugizaki
Minoru Iwata
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 JP2051780A priority Critical patent/JPS56118598A/en
Publication of JPS56118598A publication Critical patent/JPS56118598A/en
Pending legal-status Critical Current

Links

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  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To make a centrifugal blower in small size and with high efficiency by application of the diffusion theory, with which the flow from the outlet of impeller of a multivane blower to the spiral casing is considered as a divergent flow, and by using an equation to determine the configuration of this part.
CONSTITUTION: The outlet angle β of an impeller 3 of multivane blower shall be chosen between 160°W180°. The configuration from the outlet of impeller 2 to the spiral casing 1 is designed so that the characteristic parameter X, which can be expressed as above the illustration, will be in an extent of -0.6W-0.4, where A: Outlet area of impeller 2, B: Sectional area of throat 6 of spiral casing, α: Angle at outlet of impeller 2 formed from absolute flow speed to circumferential direction, λ: Mean diffusive angle of spiral casing 1 with respect to circumferential direction, R2 Radius of outlet of impeller 2, and L: Distance from tongue tip 9 of spiral casing to discharge hole 7. According to this design, the divergent flow from the outlet of impeller 2 to the spiral casing 1 will have the optimum condition and the efficiency of the blower can be greatly enhanced.
COPYRIGHT: (C)1981,JPO&Japio
JP2051780A 1980-02-22 1980-02-22 Centrifugal blower Pending JPS56118598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2051780A JPS56118598A (en) 1980-02-22 1980-02-22 Centrifugal blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2051780A JPS56118598A (en) 1980-02-22 1980-02-22 Centrifugal blower

Publications (1)

Publication Number Publication Date
JPS56118598A true JPS56118598A (en) 1981-09-17

Family

ID=12029343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2051780A Pending JPS56118598A (en) 1980-02-22 1980-02-22 Centrifugal blower

Country Status (1)

Country Link
JP (1) JPS56118598A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100341837B1 (en) * 1999-08-10 2002-06-24 구자홍 Blower
CN102966601A (en) * 2012-12-11 2013-03-13 江苏大学 Hydraulic design method of half-spiral water-sucking chamber for pump
CN107503958A (en) * 2017-09-22 2017-12-22 杭州德意电器股份有限公司 A kind of centrifugal blower fan system for range hood

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100341837B1 (en) * 1999-08-10 2002-06-24 구자홍 Blower
CN102966601A (en) * 2012-12-11 2013-03-13 江苏大学 Hydraulic design method of half-spiral water-sucking chamber for pump
CN102966601B (en) * 2012-12-11 2015-08-12 江苏大学 A kind of pump semi-spiral suction chamber Hydraulic Design Method
CN107503958A (en) * 2017-09-22 2017-12-22 杭州德意电器股份有限公司 A kind of centrifugal blower fan system for range hood

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