CN203257752U - Centrifugal noise elimination draught fan shell - Google Patents

Centrifugal noise elimination draught fan shell Download PDF

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Publication number
CN203257752U
CN203257752U CN 201320297508 CN201320297508U CN203257752U CN 203257752 U CN203257752 U CN 203257752U CN 201320297508 CN201320297508 CN 201320297508 CN 201320297508 U CN201320297508 U CN 201320297508U CN 203257752 U CN203257752 U CN 203257752U
Authority
CN
China
Prior art keywords
plate
side plate
volute
front side
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 - Fee Related
Application number
CN 201320297508
Other languages
Chinese (zh)
Inventor
郑顺铎
向增
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.)
SHANDONG YANMEI KAIDA ENVIRONMENT-FRIENDLY MACHINERY Co Ltd
Original Assignee
SHANDONG YANMEI KAIDA ENVIRONMENT-FRIENDLY MACHINERY 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 SHANDONG YANMEI KAIDA ENVIRONMENT-FRIENDLY MACHINERY Co Ltd filed Critical SHANDONG YANMEI KAIDA ENVIRONMENT-FRIENDLY MACHINERY Co Ltd
Priority to CN 201320297508 priority Critical patent/CN203257752U/en
Application granted granted Critical
Publication of CN203257752U publication Critical patent/CN203257752U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a centrifugal noise elimination draught fan shell which comprises a front side plate, a back side plate, a volute plate I and a volute plate II. The volute plate I and the volute plate II are fixed between the front side plate and the back side plate in a clamped mode and form a volute-shaped cavity between the front side plate and the back side plate, a noise absorption cotton layer is arranged in the cavity in a clamped mode, a connecting flange connected with an air inlet of a draught fan is arranged in the middle of the front side plate, the volute plate I and the volute plate II are respectively provided with an air outlet in the bottom of the front side plate and the bottom of the back side plate, and an air outlet flange used for being connected with a pipeline is arranged on the periphery of each air outlet. A noise elimination device and the shell are welded into a whole, and therefore the size of the centrifugal noise elimination draught fan shell is reduced. After noise produced by the draught fan passes through the volute-shaped cavity formed by the volute plate I, the volute plate II, the side plate I and the side plate II, noise waves are emitted and interfered by the noise absorption cotton strip arranged in the cavity in a clamped mode and absorbed by the noise absorption cotton, and therefore the purpose of noise elimination can be achieved; the centrifugal noise elimination draught fan shell is good in noise elimination effect, small in occupied area and saving in manufacturing cost.

Description

A kind of centrifugal silenced fan casing
Technical field
The utility model relates to the silencing apparatus technical field, is specifically related to a kind of centrifugal fan casing silencer.
Background technique
Silencing apparatus is to utilize sound wave when porous sound-absorbing material is propagated, and is rubbed and viscous resistance, acoustic energy is converted into thermal energy consumption dissipates, thereby reach the purpose of noise elimination flat.Existing noise-eliminating device for air-blower mostly adopts independent design, and there are the drawbacks such as floor space is large, manufacture cost is high, soundproof effect is bad in it.
Summary of the invention
The utility model provides a kind of noise-eliminating device for air-blower that is connected in one with blower fan in order to overcome the deficiency of above technology.
Novelly overcome the technological scheme that its technical problem adopts and be:
This centrifugal silenced fan casing, comprise front side plate, back side panel, clamp the spiral case plate I and the spiral case plate II that are fixed between front side plate and the back side panel, described spiral case plate I and spiral case plate II form the cavity of a scroll casing shape between front side plate and back side panel, clamped the acoustical cotton layer in the described cavity, be provided with the adpting flange that is connected with air inlet in the middle of the described front side plate, described spiral case plate I and spiral case plate II form an exhaust outlet in the bottom of front side plate and back side panel, and described exhaust outlet periphery is provided with the exhaust outlet flange for connecting pipeline.
In order further to improve soundproof effect, be provided with some holes on the above-mentioned spiral case plate I.
The beneficial effects of the utility model are: this silencer and casing are welded as a whole, thereby have reduced volume.Utilize the sound-absorbing sliver that wherein clamps to make sound wave launch, interfere and be absorbed by acoustical cotton within it behind the cavity of the noise that blower fan produces through forming a scroll casing shape between spiral case plate I, spiral case plate II, side plate I and the side plate II, thereby reach the purpose of noise elimination.The air channel soundproof effect of scroll casing shape is good, and floor space is little, has saved manufacture cost.
Description of drawings
Fig. 1 is main TV structure schematic representation of the present utility model;
Fig. 2 is left TV structure schematic representation of the present utility model;
Among the figure, 1. front side plate 2. spiral case plate II 3. acoustical cotton layers 4. spiral case plate I 5. back side panels 6. adpting flanges 7. exhaust outlet flanges.
Embodiment
Be described further below in conjunction with accompanying drawing 1,2 pairs of the utility model of accompanying drawing.
This core type silenced fan casing, comprise front side plate 1, back side panel 5, clamp the spiral case plate I 4 and the spiral case plate II 2 that are fixed between front side plate 1 and the back side panel 5, described spiral case plate I 4 and spiral case plate II 2 form the cavity of a scroll casing shape between front side plate 1 and back side panel 5, clamped acoustical cotton layer 3 in the described cavity, be provided with the adpting flange 6 that is connected with air inlet in the middle of the described front side plate 1, described spiral case plate I 4 and spiral case plate II 2 form an exhaust outlet in the bottom of front side plate 1 and back side panel 5, and described exhaust outlet periphery is provided with the exhaust outlet flange 7 for connecting pipeline.Mode by welding is welded with said apparatus, thereby reduces volume.Utilize the acoustical cotton layer 3 that wherein clamps to make sound wave launch, interfere and be absorbed by acoustical cotton within it behind the cavity of the noise that blower fan produces through forming a scroll casing shape between spiral case plate I 4, spiral case plate II 2, front side plate 1 and the back side panel 5, thereby reach the purpose of noise elimination.The air channel soundproof effect of scroll casing shape is good, and floor space is little, has saved manufacture cost.
According to making use and different, spiral case plate I 4 is designed to orifice plate or microwell plate structure, this structural hole can be that sound wave is subject to molecular friction and viscous resistance when going deep into hole, makes acoustic energy transfer heat energy to, thereby has further improved the soundproof effect of this fan casing silencer.

Claims (2)

1. centrifugal silenced fan casing, it is characterized in that: comprise front side plate (1), back side panel (5), clamp the spiral case plate I (4) and the spiral case plate II (2) that are fixed between front side plate (1) and the back side panel (5), described spiral case plate I (4) and spiral case plate II (2) form the cavity of a scroll casing shape between front side plate (1) and back side panel (5), clamped acoustical cotton layer (3) in the described cavity, be provided with the adpting flange (6) that is connected with air inlet in the middle of the described front side plate (1), described spiral case plate I (4) and spiral case plate II (2) form an exhaust outlet in the bottom of front side plate (1) and back side panel (5), and described exhaust outlet periphery is provided with the exhaust outlet flange (7) for connecting pipeline.
2. centrifugal silenced fan casing according to claim 1 is characterized in that: be provided with some holes on the described spiral case plate I (4).
CN 201320297508 2013-05-28 2013-05-28 Centrifugal noise elimination draught fan shell Expired - Fee Related CN203257752U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320297508 CN203257752U (en) 2013-05-28 2013-05-28 Centrifugal noise elimination draught fan shell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320297508 CN203257752U (en) 2013-05-28 2013-05-28 Centrifugal noise elimination draught fan shell

Publications (1)

Publication Number Publication Date
CN203257752U true CN203257752U (en) 2013-10-30

Family

ID=49470321

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320297508 Expired - Fee Related CN203257752U (en) 2013-05-28 2013-05-28 Centrifugal noise elimination draught fan shell

Country Status (1)

Country Link
CN (1) CN203257752U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835997A (en) * 2014-03-06 2014-06-04 珠海格力电器股份有限公司 Air conditioner indoor unit and volute thereof
CN105065331A (en) * 2015-08-19 2015-11-18 珠海格力电器股份有限公司 Volute and centrifugal fan with same
CN106015101A (en) * 2016-08-03 2016-10-12 广东美的制冷设备有限公司 Volute, fan and air conditioning equipment,

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835997A (en) * 2014-03-06 2014-06-04 珠海格力电器股份有限公司 Air conditioner indoor unit and volute thereof
CN103835997B (en) * 2014-03-06 2017-05-03 珠海格力电器股份有限公司 Air conditioner indoor unit and volute thereof
CN105065331A (en) * 2015-08-19 2015-11-18 珠海格力电器股份有限公司 Volute and centrifugal fan with same
CN106015101A (en) * 2016-08-03 2016-10-12 广东美的制冷设备有限公司 Volute, fan and air conditioning equipment,

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131030

Termination date: 20160528