CN201953682U - Backward centrifugal fan - Google Patents

Backward centrifugal fan Download PDF

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Publication number
CN201953682U
CN201953682U CN2011200108056U CN201120010805U CN201953682U CN 201953682 U CN201953682 U CN 201953682U CN 2011200108056 U CN2011200108056 U CN 2011200108056U CN 201120010805 U CN201120010805 U CN 201120010805U CN 201953682 U CN201953682 U CN 201953682U
Authority
CN
China
Prior art keywords
air
fan
backward
volute
spiral case
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.)
Expired - Lifetime
Application number
CN2011200108056U
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Chinese (zh)
Inventor
彭莉
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.)
FANS-TECH ELECTRIC CO., LTD.
Original Assignee
FOSHAN SHUNDE FANS-TECH ELECTRIC 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 FOSHAN SHUNDE FANS-TECH ELECTRIC Co Ltd filed Critical FOSHAN SHUNDE FANS-TECH ELECTRIC Co Ltd
Priority to CN2011200108056U priority Critical patent/CN201953682U/en
Application granted granted Critical
Publication of CN201953682U publication Critical patent/CN201953682U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a backward centrifugal fan which comprises a volute of the fan, a back air inlet wheel, a motor, a motor support for installing the motor, and air guide rings, wherein an air outlet is arranged on the volute. The backward centrifugal fan has characteristics that both sides of the volute are provided with two air inlets, and the air guide rings are arranged at the air inlets; and both sides of the back air inlet wheel are provided with two air inlets, and the air inlets of the volute and the two inlets are matched with one another and have the same size. The air amount of the fan can be improved, simultaneously, the rotation speed of the fan is lowered, the noise of the fan is greatly reduced, and as the amount of vanes of the backward fan is less, the backward fan has simple manufacturing process and lowers the product cost. As the volute of the backward fan is smaller than the volute of a forward fan, the backward fan has small space occupation, simple shape, high utilization rate of materials and simple manufacturing process, is convenient in installation, and lowers the product cost.

Description

A kind of backward type centrifugal blower
Technical field
The utility model relates to a kind of backward type centrifugal blower.
Background technique
Existing backward type centrifugal blower generally all is single air intake, and air quantity requires when big, the problem that the ubiquity noise is big.The general forward direction centrifugal fan that adopts of two air intake centrifugal blower fans, the blade quantity of the wind wheel of forward-type centrifugal blower is many, and interlobate distance is little, and manufacturing process is loaded down with trivial details, the product cost height.And the spiral case volume of forward-type centrifugal blower is bigger, and it is bigger to be installed in the space that occupies in the load, installs inconvenient.
Summary of the invention
The utility model provides air output big in order to overcome existing deficiency, and noise is little, and manufacturing process is simple, a kind of backward type centrifugal blower at the bottom of the cost of production.
In order to achieve the above object, the technical solution adopted in the utility model is: it is a kind of backward type centrifugal blower, comprises the electric machine support and the air-ducting ring of the spiral case of blower fan, back air intake wind wheel, motor, installation motor, is provided with an exhaust outlet on spiral case; It is characterized in that: have two wind inlets in the both sides of spiral case, air-ducting ring is installed in the wind inlet place; Both sides at back air intake wind wheel have two intake grills, and wind inlet is also big or small in correspondence with each other identical with being positioned at of intake grill.
Air-ducting ring and fixing is stretched out in the end of described electric machine support.
The utility model advantage compared with prior art is, the back to blower fan make two air intakes, can improve the air quantity of blower fan, the rotating speed of blower fan reduces simultaneously, and the noise of blower fan reduces greatly, and the quantity of the blade of the blower fan of backward type is few, manufacturing process is simple, has reduced the cost of product.Its spiral case is little with respect to the spiral case volume of forward-type, and the space that occupies is little, and is easy for installation, and simple shape, the stock utilization height, and the technology manufacturing is simple, has reduced the cost of product.
Description of drawings
Fig. 1 is an of the present utility model pair of air intake centrifugal blower fan schematic representation;
Fig. 2 is the utility model spiral case schematic representation;
Fig. 3 is the utility model centrifugal wind wheel schematic representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is done further detailed description:
As shown in Figures 1 to 3, it is a kind of backward type centrifugal blower, comprises the electric machine support 2 and the air-ducting ring 1 of the spiral case 4 of blower fan, back air intake wind wheel 5, motor 3, installation motor, is provided with an exhaust outlet 41 on spiral case; The utility model characteristics are: have two wind inlets 42 in the both sides of spiral case 4, air-ducting ring 1 is installed in the wind inlet place, and air-ducting ring can reduce the resistance of air intake; Both sides at back air intake wind wheel 5 have two intake grills 51, and wind inlet is also big or small in correspondence with each other identical with being positioned at of intake grill.During work, motor 3 drives laggard wind wheel 5 and rotates, and wind sucks from wind inlet 42 and intake grill 51, blows out from exhaust outlet 41 by laggard wind wheel.Because two wind inlets are arranged on spiral case 4 both sides, laggard wind wheel 5 has two intake grills, balance is good during work, and noise is little, and the exhaust outlet of spiral case is big, and is simple in structure, volume is little, cost is low.
In the present embodiment, air-ducting ring 1 and fixing is stretched out in the end of electric machine support 2.

Claims (2)

1. backward type centrifugal blower comprises spiral case, back air intake wind wheel, the motor of blower fan, the electric machine support and the air-ducting ring of installation motor, is provided with an exhaust outlet on spiral case; It is characterized in that: have two wind inlets (42) in the both sides of spiral case (4), air-ducting ring (1) is installed in the wind inlet place; Both sides at back air intake wind wheel (5) have two intake grills (51), and wind inlet is also big or small in correspondence with each other identical with being positioned at of intake grill.
2. backward type centrifugal blower according to claim 1 is characterized in that: air-ducting ring (1) and fixing is stretched out in the end of described electric machine support (2).
CN2011200108056U 2011-01-14 2011-01-14 Backward centrifugal fan Expired - Lifetime CN201953682U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200108056U CN201953682U (en) 2011-01-14 2011-01-14 Backward centrifugal fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200108056U CN201953682U (en) 2011-01-14 2011-01-14 Backward centrifugal fan

Publications (1)

Publication Number Publication Date
CN201953682U true CN201953682U (en) 2011-08-31

Family

ID=44497794

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200108056U Expired - Lifetime CN201953682U (en) 2011-01-14 2011-01-14 Backward centrifugal fan

Country Status (1)

Country Link
CN (1) CN201953682U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265663A (en) * 2014-10-14 2015-01-07 中国船舶重工集团公司第七0四研究所 Low-noise integrated centrifugal fan
WO2019041743A1 (en) * 2017-08-29 2019-03-07 中山大洋电机股份有限公司 Blower volute and blower using same
CN110118187A (en) * 2019-05-21 2019-08-13 佛山市顺德区美的洗涤电器制造有限公司 Blower and kitchen ventilator with the blower
CN111173764A (en) * 2020-03-12 2020-05-19 江苏兆胜科技股份有限公司 Double-air-inlet centrifugal fan

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265663A (en) * 2014-10-14 2015-01-07 中国船舶重工集团公司第七0四研究所 Low-noise integrated centrifugal fan
WO2019041743A1 (en) * 2017-08-29 2019-03-07 中山大洋电机股份有限公司 Blower volute and blower using same
CN110118187A (en) * 2019-05-21 2019-08-13 佛山市顺德区美的洗涤电器制造有限公司 Blower and kitchen ventilator with the blower
CN111173764A (en) * 2020-03-12 2020-05-19 江苏兆胜科技股份有限公司 Double-air-inlet centrifugal fan

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: 528300 Guangdong, Foshan, Shunde District, Daliang street, Sha Shun Road, No. five, No. 9, No. two

Patentee after: FANS-TECH ELECTRIC CO., LTD.

Address before: 528300 9, Daliang Road, Shunde District, Guangdong City, Foshan Province five

Patentee before: Foshan Shunde Fans-Tech Electric Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: GUANGDONG FANS-TECH ELECTRIC CO., LTD.

Free format text: FORMER NAME: FANSHIDA ELECTROMECHANICAL CO., LTD.;SHUNDE ZONE;FOSHAN CITY

CX01 Expiry of patent term

Granted publication date: 20110831

CX01 Expiry of patent term