WO2020043050A1 - 一种鼓风机的三合一出口放空结构 - Google Patents

一种鼓风机的三合一出口放空结构 Download PDF

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Publication number
WO2020043050A1
WO2020043050A1 PCT/CN2019/102521 CN2019102521W WO2020043050A1 WO 2020043050 A1 WO2020043050 A1 WO 2020043050A1 CN 2019102521 W CN2019102521 W CN 2019102521W WO 2020043050 A1 WO2020043050 A1 WO 2020043050A1
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vent valve
bypass
outlet
chamber
outlet pipe
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PCT/CN2019/102521
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English (en)
French (fr)
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胡思宁
吴立华
董继勇
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南京磁谷科技有限公司
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Publication of WO2020043050A1 publication Critical patent/WO2020043050A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence

Definitions

  • the invention relates to a three-in-one outlet venting structure of a blower.
  • Centrifugal blower outlets usually need to be equipped with venting valves to prevent impeller surge when the fan is started or the exhaust pipe is blocked.
  • venting valves to prevent impeller surge when the fan is started or the exhaust pipe is blocked.
  • the fan when the fan is vented, it will produce a lot of noise, which can often exceed 100 decibels, which has severely affected the environment and human health. For this reason, it is necessary to put the vent valve into the fan case to silence it.
  • the volute outlet When the vent valve is external, the volute outlet is directly connected to the outlet pipe fittings, and the distance between the volute exit and the flange of the outlet pipe is only 200mm; when the vent valve is built in, the vent valve and tee and other accessories and corresponding pipe connections are added The distance between the volute exit and the flange of the outlet pipe was increased to 550mm.
  • the vent valve itself is connected to the tee by a pipe flange, and the length of the tee branch pipe is 150mm, and the distance from the centerline of the vent valve to the flange pipe is 250mm, it also needs to occupy nearly 800mm of space in the transverse direction.
  • the present invention is to provide a three-in-one outlet venting structure of a blower in order to solve the problems existing in the prior art.
  • the technical scheme adopted by the present invention is: a three-in-one outlet venting structure of a blower, including a venting valve cover and a venting valve diaphragm, and further comprising a mounting shell, wherein a mixing plate is arranged in the mounting shell, and the mixing plate will install the shell
  • the body is divided into a bypass chamber and a vent valve chamber which communicate with each other.
  • a vent valve outlet is provided at the bottom of the vent valve chamber.
  • the vent valve diaphragm is fixed in the vent valve chamber through the vent valve cover, and the vent valve diaphragm abuts on the vent valve outlet. on;
  • the installation casing is provided with an outlet pipe flange, the outlet pipe flange penetrates the bypass chamber, and a plurality of bypass ports are provided on the outlet pipe flange, and the bypass port is placed in the bypass chamber, and the outlet pipe flange It communicates with the bypass chamber through the bypass port.
  • outlet pipe flange is integrally formed with the mounting housing, and the axis direction of the outlet pipe flange is parallel to the axis direction of the vent valve outlet.
  • bypass cavity and the vent valve cavity are both rectangular, and the lower end surface of the bypass cavity is flush with the lower end surface of the vent valve cavity, and the upper end surface of the bypass cavity is higher than the upper end surface of the vent valve cavity.
  • the three-in-one vent valve structure of the present invention omits a three-way pipe, and arranges the outlet pipe and the vent valve side by side, greatly reducing the axial length of the vent valve assembly. In this way, the vent valve can be built in, without changing the height of the cabinet, and without wasting space.
  • the axial length of the pipeline can be shortened from 550mm to 200mm, just like the simple outlet pipe fittings, without increasing the height of the cabinet.
  • the three-in-one vent valve structure of the present invention eliminates the branch pipe flange connection structure between the tee and the vent valve.
  • the vent valve is directly connected to the bypass cavity through a square shell, which greatly shortens the lateral length of the vent valve assembly. . In this way, the vent valve can be built in, without changing the cabinet size, and without wasting space.
  • the lateral length of the vent valve assembly can be shortened from about 800 mm to 400 mm, and only a proper space arrangement is required, without increasing the cabinet size.
  • the mixing plate in the present invention can avoid the high-speed air flow in the outlet pipe from directly impacting the vent valve diaphragm made of rubber, and avoid the vent valve from being opened incorrectly due to the diaphragm being blown up by the air flow.
  • the three-in-one vent valve of the present invention folds the air flow back to the inside of the cabinet, and can reduce the vent noise of the fan by using the sound insulation and sound-absorbing structure of the cabinet itself. Therefore, the venting noise of the fan can be greatly reduced.
  • FIG. 1 is a structural diagram of the present invention.
  • the present invention discloses a three-in-one outlet venting structure of a blower, which includes a mounting casing 1, a venting valve cover 21, and a venting valve diaphragm 22.
  • a mixing plate 11 is provided in the mounting casing 1, The plate 11 divides the installation housing 1 into a bypass chamber 12 and a vent valve chamber 13 which communicate with each other.
  • a vent valve outlet 23 is provided at the bottom of the vent valve chamber 13.
  • the vent valve diaphragm 22 is fixed to the vent valve by the vent valve cover 21. In the chamber 13, the vent valve diaphragm 22 abuts on the vent valve outlet 23.
  • the installation casing 1 is provided with an outlet pipe flange 3, the outlet pipe flange 3 penetrates the bypass chamber 12, and a plurality of bypass ports 31 are provided on the outlet pipe flange 3, and the bypass port 31 is placed in a bypass In the chamber 12, the outlet pipe flange 3 communicates with the bypass chamber 12 through a bypass port 31.
  • vent valve chamber 13 is also used as a vent valve housing.
  • vent valve diaphragm 22 and the installation manner of the vent valve diaphragm 22 are the same as the existing structure, so the present invention will not repeat the installation structure of the vent valve diaphragm 22 in the vent valve chamber 13 in detail.
  • the outlet pipe flange 3 is integrally formed with the mounting housing 1, and the axial direction of the outlet pipe flange 3 is parallel to the axial direction of the vent valve outlet 23.
  • Both the bypass cavity 12 and the vent valve cavity 13 are rectangular, and the lower end surface of the bypass cavity 12 is flush with the lower end surface of the vent valve cavity 13, and the upper end surface of the bypass cavity 12 is higher than the upper end surface of the vent valve cavity 13.
  • the outlet flange tube 3 and the vent valve are installed in the same sealed box-shaped housing.
  • the outlet tube inlet of the outlet flange tube 3 and the vent valve outlet 23 of the vent valve are arranged side by side, facing the same side of the casing (inside the cabinet). .
  • the working principle of the invention is:
  • the mixing plate 11 can prevent high-speed airflow from directly impacting the vent valve diaphragm 22;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Valves (AREA)

Abstract

一种鼓风机的三合一出口放空结构，在安装壳体(1)内设有混流板(11)，混流板(11)将安装壳体(1)分隔成相互连通的旁通室(12)和放空阀室(13)，在放空阀室(13)的底部设有放空阀出口(23)，放空阀膜片(22)通过放空阀盖(21)固定于放空阀室(13)内，且放空阀膜片(22)抵触在放空阀出口(23)上；安装壳体(1)上设有出口管法兰(3)，出口管法兰(3)贯穿于旁通室(12)，在出口管法兰(3)上设有若干旁通口(31)，且旁通口(31)置于旁通室内，出口管法兰(3)通过旁通口(31)与旁通室(12)相连通。该结构使得机柜的纵向高度减少，放空阀组件的横向长度也减少，壳体内的混流板(11)可以避免放空阀错误开启，风机的放空噪音降低。

Description

一种鼓风机的三合一出口放空结构 技术领域：
本发明涉及一种鼓风机的三合一出口放空结构。
背景技术：
离心式鼓风机出口通常需要装放空阀，以免在风机启动、或排气管堵塞时防止叶轮喘振。但风机放空时会产生很大的噪音，往往可以超过100分贝，对环境和人员健康都造成了严重影响。为此将放空阀放入风机机箱进行消音是很有必要的。
但是将放空阀放入机柜会占用很大的空间，导致机柜空间浪费、外形增大、成本提高。
以我公司某型风机为例：
放空阀外置时，蜗壳出口直接连接出口管件，蜗壳出口与出口管法兰距离仅200mm；放空阀内置时，由于增加了放空阀及三通等附件、及相应的管道连接件，所以蜗壳出口与出口管法兰的距离增加到了550mm。于此同时，由于放空阀本身以管法兰连接在三通上，而三通支管长度为150mm、放空阀中心线到法兰管距离250mm，所以横向也需要占用接近800mm的空间。
仅这一变动，就使机柜高度增加300mm，机柜长度增加250mm。这还是在已经通过零件相互穿插布置，减少了空间占用之后的结果。而增加的这部分体积实际上没有其他用处，对机柜设计是很大的浪费。
发明内容：
本发明是为了解决上述现有技术存在的问题而提供一种鼓风机的三合一出口放空结构。
本发明所采用的技术方案有：一种鼓风机的三合一出口放空结构，包括放空阀盖和放空阀膜片，还包括安装壳体，在安装壳体内设有混流板，混流板将安装壳体分隔成相互连通的旁通室和放空阀室，在放空阀室的底部设有放空阀出口，放空阀膜片通过放空 阀盖固定于放空阀室内，且放空阀膜片抵触在放空阀出口上；
所述安装壳体上设有出口管法兰，出口管法兰贯穿于旁通室，在出口管法兰上设有若干旁通口，且旁通口置于旁通室内，出口管法兰通过旁通口与旁通室相连通。
进一步地，所述出口管法兰与安装壳体一体成型，出口管法兰的轴线方向与放空阀出口的轴线方向相平行。
进一步地，所述旁通腔和放空阀腔均为矩形状，且旁通腔的下端面与放空阀腔的下端面相齐平，旁通腔的上端面高于放空阀腔的上端面。
本发明具有如下有益效果：
1)机柜的纵向高度大大减少：
本发明的三合一放空阀结构省去了三通管，并且将出口管与放空阀并列布置，大大缩短了放空阀组件的轴向长度。这样一来既可以将放空阀内置，又不改变机柜高度，也不会浪费空间。
在背景技术所述的例子中，可以将管道轴向长度从550mm缩短至200mm，与单纯的出口管件一样，无需增加机柜高度。
2)放空阀组件的横向长度也大大减少：
本发明的三合一放空阀结构省去了三通与放空阀之间的支管法兰连接结构，通过方形壳体直接将放空阀与旁通腔体连接，大大缩短了放空阀组件的横向长度。这样一来既可以将放空阀内置，又不改变机柜尺寸，也不会浪费空间。
在背景技术所述的例子中，可以将放空阀组件的横向长度从800mm左右缩短至400mm，只需进行适当空间布置即可，无需增加机柜尺寸。
3)壳体内的混流板可以避免放空阀错误开启的可能：
本发明中的混流板可以避免出口管中的高速气流直接冲击橡胶材质的放空阀膜片，避免膜片被气流吹起导致放空阀错误开启。
4)风机的放空噪音大大降低：
本发明的三合一放空阀将放空气流折回排放至机柜内部，可以借用机柜本身的隔音、消音结构来降低风机放空噪音。因此风机的放空噪音可以大大降低。
附图说明：
图1为本发明结构图。
具体实施方式：
下面结合附图对本发明作进一步的说明。
如图1所示，本发明公开一种鼓风机的三合一出口放空结构，包括安装壳体1、放空阀盖21和放空阀膜片22，在安装壳体1内设有混流板11，混流板11将安装壳体1分隔成相互连通的旁通室12和放空阀室13，在放空阀室13的底部设有放空阀出口23，放空阀膜片22通过放空阀盖21固定于放空阀室13内，且放空阀膜片22抵触在放空阀出口23上。在安装壳体1上设有出口管法兰3，出口管法兰3贯穿于旁通室12，在出口管法兰3上设有若干旁通口31，且旁通口31置于旁通室12内，出口管法兰3通过旁通口31与旁通室12相连通。
本发明将放空阀室13同时兼做放空阀壳体。
本发明中放空阀膜片22以及放空阀膜片22的安装方式均与现有结构相同，故本发明不再对放空阀膜片22在放空阀室13的安装结构进行详细赘述。
出口管法兰3与安装壳体1一体成型，出口管法兰3的轴线方向与放空阀出口23的轴线方向相平行。
旁通腔12和放空阀腔13均为矩形状，且旁通腔12的下端面与放空阀腔13的下端面相齐平，旁通腔12的上端面高于放空阀腔13的上端面。
出口法兰管3和放空阀被安装在同一个密封的方盒状壳体内，出口法兰管3的出口管入口与放空阀的放空阀出口23并列布置，朝向壳体同一侧(机柜内侧)。
本发明的工作原理为：
1)出口法兰管3内的压力气体可以通过旁通口31，自由进入旁通室12内；
2)旁通室12内的气流可以绕过混流板11，自由进入放空阀室13内；
3)混流板11可以防止高速气流直接冲击放空阀膜片22；
4)当放空阀膜片22受外界控制抬起时(与普通气动放空阀的结构原理完全相同)，放空阀腔体内的气流就可以在压力作用下从放空阀出口23排出；
5)放空气流排放至机柜内部，放空噪音经过机柜结构消音后可大大减小。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员 来说，在不脱离本发明原理的前提下还可以作出若干改进，这些改进也应视为本发明的保护范围。

Claims (3)

  1. 一种鼓风机的三合一出口放空结构，包括放空阀盖(21)和放空阀膜片(22)，其特征在于：
    还包括安装壳体(1)，在安装壳体(1)内设有混流板(11)，混流板(11)将安装壳体(1)分隔成相互连通的旁通室(12)和放空阀室(13)，在放空阀室(13)的底部设有放空阀出口(23)，放空阀膜片(22)通过放空阀盖(21)固定于放空阀室(13)内，且放空阀膜片(22)抵触在放空阀出口(23)上；
    所述安装壳体(1)上设有出口管法兰(3)，出口管法兰(3)贯穿于旁通室(12)，在出口管法兰(3)上设有若干旁通口(31)，且旁通口(31)置于旁通室(12)内，出口管法兰(3)通过旁通口(31)与旁通室(12)相连通。
  2. 如权利要求1所述的鼓风机的三合一出口放空结构，其特征在于：所述出口管法兰(3)与安装壳体(1)一体成型，出口管法兰(3)的轴线方向与放空阀出口(23)的轴线方向相平行。
  3. 如权利要求1所述的鼓风机的三合一出口放空结构，其特征在于：所述旁通腔(12)和放空阀腔(13)均为矩形状，且旁通腔(12)的下端面与放空阀腔(13)的下端面相齐平，旁通腔(12)的上端面高于放空阀腔(13)的上端面。
PCT/CN2019/102521 2018-08-30 2019-08-26 一种鼓风机的三合一出口放空结构 WO2020043050A1 (zh)

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CN108916103B (zh) * 2018-08-30 2024-03-12 南京磁谷科技有限公司 一种鼓风机的三合一出口放空结构

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