WO2023020266A1 - 一种箱式排风机 - Google Patents

一种箱式排风机 Download PDF

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Publication number
WO2023020266A1
WO2023020266A1 PCT/CN2022/109375 CN2022109375W WO2023020266A1 WO 2023020266 A1 WO2023020266 A1 WO 2023020266A1 CN 2022109375 W CN2022109375 W CN 2022109375W WO 2023020266 A1 WO2023020266 A1 WO 2023020266A1
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WO
WIPO (PCT)
Prior art keywords
sound
absorbing
box
exhaust fan
type exhaust
Prior art date
Application number
PCT/CN2022/109375
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English (en)
French (fr)
Inventor
董明伟
杜振军
夏岳伟
杜永强
孔黎平
张光明
丁江伟
Original Assignee
浙江双阳风机有限公司
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Publication of WO2023020266A1 publication Critical patent/WO2023020266A1/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
    • 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
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the invention relates to the field of fan technology, in particular to a box-type exhaust fan.
  • the main transformer room of the substation in order to realize the air flow in the main transformer room, reduce the air temperature in the main transformer room and the noise of the exhaust port of the main transformer room, most of the main transformer rooms are equipped with The exhaust fan is used to blow air against the main transformer, so as to realize the air flow in the main transformer.
  • the exhaust fan can realize the air flow in the main transformer room and reduce the air temperature in the main transformer room, but it cannot eliminate the mechanical vibration noise and air flow noise generated by the fan during operation, which will affect nearby residents. impact on health and normal life.
  • the purpose of the present invention is to provide a box-type exhaust fan to solve the above-mentioned problems in the prior art, which can greatly reduce the noise and reduce the noise pollution.
  • the present invention provides the following scheme:
  • the invention provides a box-type exhaust fan, which includes a main box body, the main box body is installed on a base, universal wheels are installed at the four corners of the bottom of the base; a fan is arranged in the main box body
  • the body, the fan body includes a housing and an impeller, the impeller is fixed in the housing, the impeller is connected to a motor through a rotating shaft, one side of the housing is provided with an air inlet, and the other side is provided with an air outlet , the air inlet and the air outlet protrude from the main box; the air inlet is provided with a sound-absorbing ring, the air outlet is connected with a sound-absorbing pipe, and the inner wall of the housing is provided with a first sound-absorbing layer.
  • a second sound-absorbing layer is provided on the inner wall of the main box.
  • the first sound-absorbing layer and the second sound-absorbing layer are made of sound-absorbing cotton, sponge or fiber blanket, and a plurality of sound-absorbing holes are uniformly arranged in the first sound-absorbing layer and the second sound-absorbing layer.
  • the sound-absorbing ring includes a ring-shaped body, and sound-absorbing cotton is attached to the inner wall of the ring-shaped body.
  • the sound-absorbing pipe is made of fiberglass composite pipe.
  • a filter is provided at a position close to the muffler pipe at the air outlet.
  • the two impellers are installed side by side on the rotating shaft.
  • a shock-absorbing pad is provided on the base.
  • the universal wheel includes a mounting frame on which rollers are installed through a wheel shaft, the top of the mounting frame is rotatably mounted on the bottom of the base through the mounting frame rotating shaft, and the mounting frame and the base A shock absorbing spring is also provided between the bottoms, and the shock absorbing spring is sheathed on the rotating shaft of the installation frame.
  • a push handle is installed on the top of the front end of the main box.
  • the air inlet of the fan body of the present invention is provided with a sound-absorbing ring, and the sound-absorbing ring is threadedly connected to the air inlet, and the air outlet is threadedly connected with a sound-absorbing pipe, which is convenient for disassembly and replacement; the inner wall of the housing is provided with a first sound-absorbing layer.
  • the present invention realizes multiple sound absorption and noise reduction through the combined use of multiple sound-absorbing structures such as the sound-absorbing ring, the first sound-absorbing layer, and the sound-absorbing pipe, greatly reducing noise and reducing noise pollution.
  • Fig. 1 is the structural representation of fan body of the present invention
  • Fig. 2 is a schematic structural view of a box-type exhaust fan in Embodiment 1 of the present invention.
  • Fig. 3 is a schematic structural diagram of a box-type exhaust fan in Embodiment 2 of the present invention.
  • Fig. 4 is a schematic structural view of the universal wheel in the second embodiment of the present invention.
  • 1 is the casing
  • 2 is the impeller
  • 3 is the rotating shaft
  • 4 is the first sound-absorbing layer
  • 5 is the sound-absorbing ring
  • 6 is the air outlet
  • 7 is the sound-absorbing pipe
  • 8 is the filter
  • 9 is the motor
  • 10 is the main box Body
  • 11 is the second sound-absorbing layer
  • 12 is a base
  • 13 is a push handle
  • 14 is a universal wheel, 141-mounting frame, 142-mounting frame rotating shaft, 143-wheel shaft, 144-roller, 145-shock-absorbing spring.
  • the purpose of the present invention is to provide a box-type exhaust fan to solve the above-mentioned problems in the prior art, which can greatly reduce the noise and reduce the noise pollution.
  • this embodiment provides a box-type exhaust fan, including a main box 10, the main box 10 is installed on a base 12, and the four corners at the bottom of the base 12 are A universal wheel 14 is installed, and the base 12 is driven to move by the universal wheel 14, so as to realize the movement of the entire box-type exhaust fan;
  • the main box 10 is provided with a fan body, and the fan body includes a housing 1 and an impeller 2, The impeller 2 is fixed in the housing 1, and the impeller 2 is connected with a motor 9 through a rotating shaft 3.
  • One side of the housing 1 is provided with an air inlet, and the other side is provided with an air outlet 6;
  • a muffler ring 5 is provided at the air outlet, and the muffler ring 5 is threadedly connected to the air inlet, and the air outlet 6 is threadedly connected with a muffler pipe 7 for easy disassembly and replacement;
  • the inner wall of the housing 1 is provided with a first sound-absorbing layer 4 Specifically, the first sound-absorbing layer 4 is pasted on the inner wall of the casing 1 by an adhesive.
  • multiple structures such as the sound-absorbing ring 5, the first sound-absorbing layer 4, and the sound-absorbing pipe 7 are used to realize multiple sound-absorbing and noise-reducing, greatly reducing noise and reducing noise pollution.
  • the entire fan body and the motor 9 are arranged in the main box body 10, the air inlet and the air outlet 6 protrude from the main box body 10, and the main box body 10 is correspondingly arranged There are openings so that the air inlet and the air outlet 6 protrude, and the motor 9 and the fan body can be effectively protected through the main box 10 .
  • the inner wall of the main box body 10 is provided with a second sound-absorbing layer 11 to further improve the noise reduction effect.
  • the first sound-absorbing layer 4 and the second sound-absorbing layer 11 are made of sound-absorbing cotton, sponge or fiber blanket, and a plurality of Sound-absorbing hole: During the working process, the noise is continuously absorbed through the hemispherical sound-absorbing hole to achieve better sound-absorbing effect.
  • the sound-absorbing ring 5 includes a ring-shaped body, and sound-absorbing cotton is attached to the inner wall of the ring-shaped body, and the noise at the air inlet is reduced through the sound-absorbing cotton;
  • the sound-absorbing pipe 7 adopts an existing glass fiber reinforced plastic composite pipe,
  • the fiberglass composite pipe has good sound-absorbing effect, and the noise attenuates quickly when passing along the air pipe, thereby reducing the phenomenon of crosstalk.
  • the air outlet 6 is provided with a filter screen 8 at a position close to the muffler pipe 7, which can filter the air outlet and effectively filter out dust therein.
  • two impellers 2 can also be provided, and the two impellers 2 are installed side by side on the rotating shaft 3.
  • Double impellers 2 are provided, which can increase the contact area between the fluid and the blades and reduce the aerodynamic force. sexual noise.
  • This embodiment is an improvement made on the basis of Embodiment 1, and its improvements are as follows:
  • the main box 10 is installed on a base 12, and the base 12 is provided with a shock absorbing pad, which can be made of soft materials such as rubber or sponge. While the main box body 10 performs shock-absorbing protection, reduce the noise generated by the contact between the main box body 10 and the base 12; The base 12 is driven to move, thereby realizing the movement of the entire box-type exhaust fan.
  • a shock absorbing pad which can be made of soft materials such as rubber or sponge.
  • the universal wheel 14 includes a mounting frame 141, on which a roller 144 is installed through a wheel shaft 143, and the top of the mounting frame 141 is rotatably mounted on the base 12 through a mounting frame rotating shaft 142
  • a damping spring 145 is provided between the mounting frame 141 and the bottom of the base 12 , and the shock absorbing spring 145 is sheathed on the rotating shaft 142 of the mounting frame.
  • the universal wheel 14 is provided with a damping spring 145, which effectively damps the shock during the moving process and reduces the damage of the entire device.
  • the mounting bracket 141 is also provided with a braking device, which is used to lock the roller 144 to realize the braking of the universal wheel 14; wherein, the braking device can use brake pads, or select other brake pads according to the needs of the work. brake structure.
  • a push handle 13 is installed on the top of the front end of the main box body 10 to facilitate the movement of the entire box-type exhaust fan; wherein, the push handle 13 can also be installed on the front top of the base 12, and the push handle 13 can also be provided with anti-skid cover, convenient to hold.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种箱式排风机，包括安装于一底座（12）上的主箱体（10），底座（12）底部的四个角处均安装有万向轮（14）。主箱体（10）内设置有风机本体。风机本体包括壳体（1）和叶轮（2），叶轮（2）固定于壳体（1）内。叶轮（2）通过转轴（3）连接有电机（9）。壳体（1）的一侧设置有进风口，另一侧设置有出风口（6），进风口和出风口（6）伸出主箱体（10）；进风口设置有消音环（5），出风口（6）连接有消音管（7）。壳体（1）的内壁上设置有第一吸音层（4）。通过消音环、第一吸音层以及消音管等多个消音结构的结合使用，实现多重吸音降噪，降低了噪音污染。

Description

一种箱式排风机 技术领域
本发明涉及风机技术领域，特别是涉及一种箱式排风机。
背景技术
众所周知，在电力系统的不少场合，例如变电站的主变压器室，为实现主变压器室内的空气流动、降低主变压器室的空气温度和主变压器室排气口的噪声，在主变压器室内大都设置有排风机，用排风机对着主变压器进行吹风，从而实现主变压器内的空气流动。
虽然采用排风机可以实现主变压器室内的空气流动、降低主变压器室内的空气温度，但无法消除风机在运行过程中产生的机械振动噪声和气流噪声，这种机械振动噪声和气流噪声会给附近居民的健康和正常生活造成影响。
因此，亟需一种新型的箱式排风机，以解决现有技术中风机所存在的噪音问题。
发明内容
本发明的目的是提供一种箱式排风机，以解决上述现有技术存在的问题，能够使噪声大大降低，降低了噪音污染。
为实现上述目的，本发明提供了如下方案：
本发明提供一种箱式排风机，包括主箱体，所述主箱体安装于一底座上，所述底座底部的四个角处均安装有万向轮；所述主箱体内设置有风机本体，所述风机本体包括壳体和叶轮，所述叶轮固定于所述壳体内，所述叶轮通过转轴连接有电机，所述壳体的一侧设置有进风口，另一侧设置有出风口，所述进风口和所述出风口伸出所述主箱体；所述进风口设置有消音环，所述出风口连接有消音管，所述壳体的内壁上设置有第一吸音层。
优选的，所述主箱体的内壁上设置有第二吸音层。
优选的，所述第一吸音层和所述第二吸音层采用吸音棉、海绵或纤维毯制成，所述第一吸音层和所述第二吸音层内均匀设置有多个吸音孔。
优选的，所述消音环包括环状本体，所述环状本体的内壁上贴附有吸 音棉。
优选的，所述消音管采用玻璃钢复合管。
优选的，所述出风口靠近所述消音管的位置处设置有过滤网。
优选的，所述叶轮设置有两个，两个所述叶轮前后并排安装在所述转轴上。
优选的，所述底座上设置有减震垫。
优选的，所述万向轮包括安装架，所述安装架上通过轮轴安装有滚轮，所述安装架的顶部通过安装架转轴转动安装于所述底座的底部，所述安装架与所述底座的底部之间还设置有减震弹簧，所述减震弹簧套设于所述安装架转轴上。
优选的，所述主箱体的前端顶部安装有推把。
本发明相对于现有技术取得了以下技术效果：
本发明风机本体的进风口设置有消音环，消音环与进风口通过螺纹连接，所述出风口螺纹连接有消音管，便于拆装更换；所述壳体的内壁上设置有第一吸音层。本发明通过消音环、第一吸音层以及消音管等多个消音结构的结合使用，实现多重吸音降噪，使噪声大大降低，降低了噪音污染。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明风机本体的结构示意图；
图2为本发明实施例一中箱式排风机的结构示意图；
图3为本发明实施例二中箱式排风机的结构示意图；
图4为本发明实施例二中万向轮的结构示意图；
其中，1为壳体，2为叶轮，3为转轴，4为第一吸音层，5为消音环，6为出风口，7为消音管，8为过滤网，9为电机，10为主箱体，11为第二吸音层，12为底座，13为推把，14为万向轮，141-安装架、142-安装架转轴、143-轮轴、144-滚轮、145-减震弹簧。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的目的是提供一种箱式排风机，以解决上述现有技术存在的问题，能够使噪声大大降低，降低了噪音污染。
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图和具体实施方式对本发明作进一步详细的说明。
实施例一
如图1-图2所示，本实施例提供一种箱式排风机，包括主箱体10，所述主箱体10安装于一底座12上，所述底座12底部的四个角处均安装有万向轮14，通过万向轮14带动底座12移动，从而实现整个箱式排风机的可移动；主箱体10内设置有风机本体，所述风机本体包括壳体1和叶轮2，所述叶轮2固定于所述壳体1内，所述叶轮2通过转轴3连接有电机9，所述壳体1的一侧设置有进风口，另一侧设置有出风口6；所述进风口处设置有消音环5，消音环5与进风口通过螺纹连接，所述出风口6螺纹连接有消音管7，便于拆装更换；所述壳体1的内壁上设置有第一吸音层4，具体的，第一吸音层4通过胶黏剂粘贴于壳体1内壁上。
本实施例中通过消音环5、第一吸音层4以及消音管7等多个结构，实现多重吸音降噪，使噪声大大降低，降低了噪音污染。而且，本实施例中整个所述风机本体以及电机9设置于所述主箱体10内，所述进风口和所述出风口6伸出所述主箱体10，主箱体10上对应设置有开口以便于进风口和出风口6伸出，通过主箱体10能够对电机9和风机本体进行有效保护。
本实施例中，主箱体10的内壁上设置有第二吸音层11，进一步地提高消音降噪效果。具体的，所述第一吸音层4和所述第二吸音层11采用吸音棉、海绵或纤维毯制成，所述第一吸音层4和所述第二吸音层11内均匀设置有多个吸音孔；在工作过程中，通过半球形的消音孔对噪音进行不断吸附，达到更佳的吸音效果。
具体的，所述消音环5包括环状本体，所述环状本体的内壁上贴附有吸音棉，通过吸音棉减小进风口处噪音；所述消音管7采用现有的玻璃钢复合管，所述玻璃钢复合管吸音效果好，噪音沿该风管传递时衰减也快，减少了串音现象。所述出风口6靠近所述消音管7的位置处设置有过滤网8，能够对出风进行过滤，有效过滤掉其中灰尘。
在本实施例中，所述叶轮2还可以设置有两个，两个所述叶轮2前后并排安装在所述转轴3上，设置有双叶轮2，可以增加流体与叶片接触面积，减少空气动力性噪声。
实施例二
本实施例是在实施例一的基础上进行的改进，其改进之处在于：
如图3-图4所示，所述主箱体10安装于一底座12上，所述底座12上设置有减震垫，减震垫可以采用橡胶或者海绵等软质材料制成，在对主箱体10进行减震保护的同时，减小主箱体10与底座12之间接触产生的噪音；所述底座12底部的四个角处均安装有万向轮14，通过万向轮14带动底座12移动，从而实现整个箱式排风机的可移动。
在本实施例中，所述万向轮14包括安装架141，所述安装架141上通过轮轴143安装有滚轮144，所述安装架141的顶部通过安装架转轴142转动安装于所述底座12的底部，所述安装架141与所述底座12的底部之间还设置有减震弹簧145，所述减震弹簧145套设于所述安装架转轴142上。本实施例中万向轮14上设置有减震弹簧145，在移动过程中有效减震，减小整个装置的损伤。
在本实施例中，安装架141上还设置有刹车装置，刹车装置用于对滚轮144进行锁紧，实现万向轮14的刹车；其中，刹车装置可以采用刹车片，或者根据工作需要选择其它的刹车结构。
在本实施例中，所述主箱体10的前端顶部安装有推把13，方便推动整个箱式排风机的移动；其中，推把13也可以安装于底座12的前端顶部，而且，推把13上还可以设置有防滑套，方便手持。
本发明中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范 围上均会有改变之处。综上所述，本说明书内容不应理解为对本发明的限制。

Claims (10)

  1. 一种箱式排风机，其特征在于：包括主箱体，所述主箱体安装于一底座上，所述底座底部的四个角处均安装有万向轮；所述主箱体内设置有风机本体，所述风机本体包括壳体和叶轮，所述叶轮固定于所述壳体内，所述叶轮通过转轴连接有电机，所述壳体的一侧设置有进风口，另一侧设置有出风口，所述进风口和所述出风口伸出所述主箱体；所述进风口设置有消音环，所述出风口连接有消音管，所述壳体的内壁上设置有第一吸音层。
  2. 根据权利要求1所述的箱式排风机，其特征在于：所述主箱体的内壁上设置有第二吸音层。
  3. 根据权利要求2所述的箱式排风机，其特征在于：所述第一吸音层和所述第二吸音层采用吸音棉、海绵或纤维毯制成，所述第一吸音层和所述第二吸音层内均匀设置有多个吸音孔。
  4. 根据权利要求1所述的箱式排风机，其特征在于：所述消音环包括环状本体，所述环状本体的内壁上贴附有吸音棉。
  5. 根据权利要求1所述的箱式排风机，其特征在于：所述消音管采用玻璃钢复合管。
  6. 根据权利要求5所述的箱式排风机，其特征在于：所述出风口靠近所述消音管的位置处设置有过滤网。
  7. 根据权利要求1所述的箱式排风机，其特征在于：所述叶轮设置有两个，两个所述叶轮前后并排安装在所述转轴上。
  8. 根据权利要求1所述的箱式排风机，其特征在于：所述底座上设置有减震垫。
  9. 根据权利要求8所述的箱式排风机，其特征在于：所述万向轮包括安装架，所述安装架上通过轮轴安装有滚轮，所述安装架的顶部通过安装架转轴转动安装于所述底座的底部，所述安装架与所述底座的底部之间还设置有减震弹簧，所述减震弹簧套设于所述安装架转轴上。
  10. 根据权利要求1所述的箱式排风机，其特征在于：所述主箱体的前端顶部安装有推把。
PCT/CN2022/109375 2021-08-18 2022-08-01 一种箱式排风机 WO2023020266A1 (zh)

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