CN2656674Y - 改进的罗茨鼓风机用机壳 - Google Patents

改进的罗茨鼓风机用机壳 Download PDF

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Publication number
CN2656674Y
CN2656674Y CNU2003201106528U CN200320110652U CN2656674Y CN 2656674 Y CN2656674 Y CN 2656674Y CN U2003201106528 U CNU2003201106528 U CN U2003201106528U CN 200320110652 U CN200320110652 U CN 200320110652U CN 2656674 Y CN2656674 Y CN 2656674Y
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China
Prior art keywords
roots blower
blower casing
air port
casing
chassis cavity
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Expired - Fee Related
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CNU2003201106528U
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谢维民
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

改进的罗茨鼓风机用机壳，属机械装置，包括中空的内腔及机壳上的进、出风口，机壳内腔呈“8”字形，进、出风口中连接机壳内腔处为长条形管槽，连通外部处为方形孔或圆形孔，该结构可以有效地提高罗茨鼓风机的效率并降低罗茨鼓风机的噪音。

Description

改进的罗茨鼓风机用机壳
技术领域
本实用新型涉及用于罗茨鼓风机的机壳，属机械装置。
技术背景
常用的罗茨鼓风机机壳如图1所示，其内孔呈椭圆形，进、出风口为方孔或圆孔，直通机壳内腔，出风口处设有导风槽，这种机壳结构的缺陷是内孔中密封区域较少，出风效率低，同时回风多，噪音高。
发明内容
本实用新型正是为了克服上述不足，提供一种效率高、噪音低的罗茨鼓风机用机壳，其创新点在于改变机壳的内腔形状，进、出风口中连接机壳内腔处为长条形管槽，连通外部处为方形孔或圆形孔，具体是这样来实现的：改进的罗茨鼓风机用机壳，包括中空的内腔及机壳上的进、出风口，其特征在于机壳内腔呈“8”字形，进、出风口中连接机壳内腔处为长条形管槽，连通外部处为方形孔或圆形孔。这种机壳结构，出风口无需设计导风槽，风机运行中内腔里回风少，噪音低，出风效率高。
根据不同的机型大小及设计要求，本实用新型机壳内腔一圆心与进、出风口之间的夹角α(参考图3)设计为30°-180°，进、出风口宽度尺寸B与长度尺寸L之间的比值为1∶1.2-1∶20，进、出风口长度尺寸L与机壳总宽度尺寸L0的比值为1∶1-1∶10。
经过试验，“8”字形的机壳内腔结构可以有效地提高罗茨鼓风机的效率并降低罗茨鼓风机的噪音。
附图说明
图1为技术背景的结构示意图。
图2为本实用新型的结构示意图。
图3为本实用新型的侧面示意图。
具体实施方式
改进的罗茨鼓风机用机壳，中空机壳内腔(1)呈“8”字形，进风口(2)、出风口(3)中连接机壳内腔(1)处为长条形管槽(4)，连通外部处为方形孔(5)。

Claims (4)

1.改进的罗茨鼓风机用机壳，包括中空的内腔及机壳上的进、出风口，其特征在于机壳内腔呈“8”字形，进、出风口中连接机壳内腔处为长条形管槽，连通外部处为方形孔或圆形孔。
2.根据权利要求1所述的罗茨鼓风机用机壳，其特征在于机壳内腔一圆心与进、出风口之间的夹角α设计为30°-180°。
3.根据权利要求1所述的罗茨鼓风机用机壳，其特征在于进、出风口宽度尺寸B与长度尺寸L之间的比值为1∶1.2-1∶20。
4.根据权利要求1所述的罗茨鼓风机用机壳，其特征在于进、出风口长度尺寸L与机壳总宽度尺寸L0的比值为1∶1-1∶10。
CNU2003201106528U 2003-10-31 2003-10-31 改进的罗茨鼓风机用机壳 Expired - Fee Related CN2656674Y (zh)

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CNU2003201106528U CN2656674Y (zh) 2003-10-31 2003-10-31 改进的罗茨鼓风机用机壳

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Application Number Priority Date Filing Date Title
CNU2003201106528U CN2656674Y (zh) 2003-10-31 2003-10-31 改进的罗茨鼓风机用机壳

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CN2656674Y true CN2656674Y (zh) 2004-11-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2564381A (en) * 2017-06-12 2019-01-16 Edwards Ltd Twin shaft pumps and a method of pumping
CN110192035A (zh) * 2017-01-24 2019-08-30 爱德华兹有限公司 泵密封

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110192035A (zh) * 2017-01-24 2019-08-30 爱德华兹有限公司 泵密封
US11255326B2 (en) 2017-01-24 2022-02-22 Edwards Limited Offset stator bores for pump sealing
GB2564381A (en) * 2017-06-12 2019-01-16 Edwards Ltd Twin shaft pumps and a method of pumping
GB2564381B (en) * 2017-06-12 2020-07-01 Edwards Ltd Twin shaft pumps and a method of pumping
US11401935B2 (en) 2017-06-12 2022-08-02 Edwards Limited Twin shaft pumps and a method of pumping

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Granted publication date: 20041117

Termination date: 20101031