WO2020125046A1 - 一种磁悬浮离心式鼓风机机柜 - Google Patents

一种磁悬浮离心式鼓风机机柜 Download PDF

Info

Publication number
WO2020125046A1
WO2020125046A1 PCT/CN2019/101955 CN2019101955W WO2020125046A1 WO 2020125046 A1 WO2020125046 A1 WO 2020125046A1 CN 2019101955 W CN2019101955 W CN 2019101955W WO 2020125046 A1 WO2020125046 A1 WO 2020125046A1
Authority
WO
WIPO (PCT)
Prior art keywords
cabinet
magnetic suspension
fan
port
sound insulation
Prior art date
Application number
PCT/CN2019/101955
Other languages
English (en)
French (fr)
Inventor
熊健
吴立华
董继勇
Original Assignee
南京磁谷科技有限公司
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 南京磁谷科技有限公司 filed Critical 南京磁谷科技有限公司
Publication of WO2020125046A1 publication Critical patent/WO2020125046A1/zh

Links

Images

Classifications

    • 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
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring

Definitions

  • the invention relates to a magnetic suspension centrifugal blower cabinet.
  • the existing structure is not conducive to centralized control, and is not conducive to centralized cooling.
  • the air inlet has a large flow resistance, high noise, and a large space occupied by multiple units during operation.
  • the present invention is to provide a magnetic suspension centrifugal blower cabinet in order to solve the problems in the prior art.
  • a magnetic suspension centrifugal blower cabinet including a cabinet and a magnetic suspension fan
  • the magnetic suspension fan is placed in the cabinet
  • the cabinet has a rectangular structure
  • air inlets are provided on the four sides of the cabinet
  • a cooling flow channel is provided on the magnetic levitation fan, and also includes soundproof plates.
  • soundproof plates are evenly distributed along the circumferential direction of the air intake channel in the magnetic levitation fan, and a muffler cavity is formed between two adjacent soundproof plates. The air vents are connected, and both ends of the sound insulation board are fixed in the cabinet;
  • the cabinet is provided with a strong current connection port, a weak current connection port, a rotor cooling air port and a stator cooling water port.
  • the rotor cooling air port is connected to a pipe extending from the bottom end of the magnetic levitation fan at the stator cooling water port.
  • the upper is connected with a water pipe, and the water pipe is connected with the cooling flow channel on the magnetic suspension fan; the outer wall of the cabinet is provided with an air outlet.
  • the soundproof plate is an arc-shaped structure, including an inner arc orifice plate, an outer arc orifice plate, a middle silencing cotton and an end plate, the inner arc orifice plate and the outer arc orifice plate are arranged parallel to each other,
  • a filling gap is formed between the inner circular arc orifice plate and the outer circular arc orifice plate, the middle silencing cotton is filled in the filling gap, the end plate is fixed around the inner and outer circular arc orifice plates, and the filling gap is closed.
  • a connecting piece is fixedly connected to the outer wall of the sound insulation board, and a fixing hole is provided on the connecting piece.
  • a filter screen is provided at the air inlet.
  • the invention has the following beneficial effects: the invention is provided with separate stator cooling water and rotor cooling wind interfaces, which can realize multiple centralized cooling; separate strong and weak current external interfaces can realize multiple centralized control; radiation of the air inlet
  • the shape of noise reduction structure can reduce the air flow resistance and reduce the noise of the fan. Due to centralized cooling and centralized control, the space occupied by multiple units running simultaneously is smaller than the original structure.
  • Figure 1 is a structural diagram of the present invention.
  • Figure 2 is a structural diagram of the present invention.
  • Fig. 3 is a structural diagram of a soundproof board in the present invention.
  • a magnetic suspension centrifugal blower cabinet of the present invention includes a cabinet 1, a magnetic suspension fan 2 and a sound insulation board 3.
  • the magnetic suspension fan 2 is placed in the cabinet 1, and the cabinet 1 has a rectangular structure.
  • Each side is provided with an air inlet 11, a number of soundproof plates 3 are evenly distributed along the circumferential direction of the air intake passage 21 in the magnetic levitation fan 2, and a muffler cavity 30 is formed between two adjacent soundproof plates 3, the muffler cavity 30 and the inlet
  • the tuyeres 11 are connected. Both ends of the sound insulation board 3 are fixed in the cabinet 1, and the sound insulation board 3 is located inside the air inlet 11.
  • the cabinet 1 is provided with a strong current connection port 4, a weak current connection port 5, a rotor cooling air port 6 and a stator cooling water port 7, the rotor cooling air port 6 is connected to a pipe, which extends to the bottom end of the magnetic levitation fan 2, A water pipe is connected to the stator cooling water interface 7, and the water pipe is connected to the cooling flow channel on the magnetic levitation fan 2.
  • the soundproof plate 3 has an arc-shaped structure, and includes an inner arc orifice plate 31, an outer arc orifice plate 32, a middle silencing cotton 33 and an end plate.
  • the inner arc orifice plate 31 and the outer arc orifice plate 32 are arranged parallel to each other, and A filling gap is formed between the inner circular arc orifice plate 31 and the outer circular arc orifice plate 32, and the middle silencing cotton 33 is filled in the filling gap, the end plates are fixed around the inner and outer circular arc orifice plates and the filling gap is closed.
  • connection piece 34 is fixedly connected to the end plate on the bottom surface of the sound insulation board 3, and a fixing hole is provided on the connection piece 34.
  • the sound insulation board 3 is fixed to the cabinet 1 by bolts.
  • a filter screen is provided at the air inlet 11.
  • An air outlet 14 is provided on the outer wall of the cabinet 1.
  • the radial arc sound insulation board is used to muffle the center of the inlet 21 to reduce the flow resistance and noise.
  • the external air enters the cabinet through the air inlet 11 of the cabinet, and then passes through the internal radial arc
  • the muffler cavity 30 between the sound insulation panels 3 enters the air intake. Because the soundproof board adopts arc structure, it can reduce the resistance of the air flow and reduce the noise of the gas flow. Because the soundproof board adopts the structure of the surface porous board and the internal sound-absorbing cotton, it can also eliminate some high-frequency noise from the host.
  • the main unit of the magnetic levitation blower is installed inside the cabinet of the present invention, the air inlet is provided in the upper part of the cabinet, a muffler baffle is arranged around the air inlet, the inner wall of the door panel around the lower part is provided with a muffler porous plate, and the door panel is provided with a strong electrical interface, Weak current interface, stator cooling water interface, rotor cooling air interface, air outlet.
  • the external wind enters the cabinet from the upper air inlet and enters the air inlet through the air duct between the arc-shaped sound insulation panels. After centrifugal compression of the main unit, the high-pressure gas is discharged from the air outlet. At the same time, the rotor and stator will generate a lot of heat.
  • the external cooling water enters the host through the stator cooling water port on the cabinet and takes away the stator heat.
  • the external cooling air enters the host through the rotor cooling air interface and takes away the rotor heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种磁悬浮离心式鼓风机机柜(1)，磁悬浮风机(2)置于机柜(1)内，在机柜(1)的四个侧面上均设有进风口(11)，在磁悬浮风机(2)上设有冷却流道，若干个隔音板(3)沿着磁悬浮风机(2)中进气道的圆周方向均匀分布，且相邻两隔音板之间形成消音腔(30)，消音腔(30)与进风口(11)相连通，隔音板(3)的两端固定于机柜内；在机柜(1)上设有强电接线口(4)、弱电接线口(5)、转子冷却风接口(6)和定子冷却水接口(7)，转子冷却风接口(6)连接一根管道，该管道伸于磁悬浮风机(2)的底端，在定子冷却水接口(7)上连接水管，水管与磁悬浮风机(2)上的冷却流道相连；机柜(1)的外壁上设有出风口(14)。该机柜有助于实现多台集中控制，进风噪音小，所占空间小。

Description

一种磁悬浮离心式鼓风机机柜 技术领域：
本发明涉及一种磁悬浮离心式鼓风机机柜。
背景技术：
现有磁悬浮离心式鼓风机大多采用主机、电控、冷却等***集成的结构，但在某些工况下，需要多台风机集中控制、集中冷却时，需要将个***分离。
现有结构不利于集中控制，不利于集中冷却，进风口流阻大、噪音大，多台运行时占用的空间大。
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磁悬浮离心式鼓风机机柜。
本发明所采用的技术方案有：一种磁悬浮离心式鼓风机机柜，包括机柜和磁悬浮风机，所述磁悬浮风机置于机柜内，机柜为矩形状结构，在机柜的四个侧面上均设有进风口，在磁悬浮风机上设有冷却流道，还包括隔音板，若干个隔音板沿着磁悬浮风机中进气道的圆周方向均匀分布，且相邻两隔音板之间形成消音腔，消音腔与进风口相连通，隔音板的两端固定于机柜内；
在机柜上设有强电接线口、弱电接线口、转子冷却风接口和定子冷却水接口，所述转子冷却风接口连接一根管道，该管道伸于磁悬浮风机的底端，在定子冷却水接口上连接水管，水管与磁悬浮风机上的冷却流道相连；所述机柜的外壁上设有出风口。
进一步地，所述隔音板为圆弧状结构，包括内圆弧孔板、外圆弧孔板、中间消音棉和端板，所述内圆弧孔板和外圆弧孔板相互平行设置，且内圆弧孔板与外圆弧孔板之间形成填充间隙，中间消音棉填充于所述填充间隙内，端板固定于内、外圆弧孔板的四周并将填充间隙封闭。
进一步地，所述隔音板的外壁上固定连接有连接片，在连接片上设有固定孔。
进一步地，所述进风口处设有滤网。
本发明具有如下有益效果：本发明设有单独的定子冷却水、转子冷却风接口，可实现多台集中冷却；单独的强电和弱电的对外接口，可实现多台集中控制；进风口的辐射状消音结构，可降低进风流阻降低风机的噪音。由于是集中冷却和集 中控制，多台同时运行时所占空间比原来的结构要小。
附图说明：
图1为本发明结构图。
图2为本发明结构图。
图3为本发明中隔音板的结构图。
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至图3，本发明一种磁悬浮离心式鼓风机机柜，包括机柜1、磁悬浮风机2和隔音板3，磁悬浮风机2置于机柜1内，机柜1为矩形状结构，在机柜1的四个侧面上均设有进风口11，若干个隔音板3沿着磁悬浮风机2中进气道21的圆周方向均匀分布，且相邻两隔音板3之间形成消音腔30，消音腔30与进风口11相连通。隔音板3的两端固定于机柜1内，隔音板3位于进风口11的内侧。
在机柜1上设有强电接线口4、弱电接线口5、转子冷却风接口6和定子冷却水接口7，转子冷却风接口6连接一根管道，该管道伸于磁悬浮风机2的底端，在定子冷却水接口7上连接水管，水管与磁悬浮风机2上的冷却流道相连。
隔音板3为圆弧状结构，包括内圆弧孔板31、外圆弧孔板32、中间消音棉33和端板，内圆弧孔板31和外圆弧孔板32相互平行设置，且内圆弧孔板31与外圆弧孔板32之间形成填充间隙，中间消音棉33填充于所述填充间隙内，端板固定于内、外圆弧孔板的四周并将填充间隙封闭。
为便于隔音板3的固定安装，在隔音板3中底面的端板上固定连接有连接片34，在连接片34上设有固定孔。隔音板3通过螺栓固定于机柜1上。
在进风口11处设有滤网。机柜1的外壁上设有出风口14。
以进气道21中心为圆心采用辐射状圆弧隔音板消音，以减少流阻，降低噪音，磁悬浮风机2启动时，外部气体经过机柜的进风口11进入机柜内部，再经过内部辐射状圆弧隔音板3之间的消音腔30进入进气道。由于隔音板采用弧形结构，可以降低气流的阻力进而可以降低气体流动的噪音，由于隔音板采用了表面多孔板和内部消音棉的结构，也可以消除主机内部传出的一些高频噪音。
本发明将磁悬浮鼓风机主机安装到本发明机柜内部，进风口设置在机柜上部， 进气道四周设置有消音隔板，下部四周门板内壁都设有消音的多孔板，门板上设置了强电接口、弱电接口、定子冷却水接口、转子冷却风接口、出风口。
主机工作时，外部风从上部进气口，进入机柜内部，并通过弧形隔音板之间的风道进入进气道、经过主机离心压缩后从出风口排出高压气体。同时转子和定子会产生大量热量，外部冷却水通过机柜上的定子冷却水口进入主机并带走定子热量、外部冷却风通过转子冷却风接口进入主机，带走转子热量。
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 (4)

  1. 一种磁悬浮离心式鼓风机机柜，包括机柜(1)和磁悬浮风机(2)，所述磁悬浮风机(2)置于机柜(1)内，机柜(1)为矩形状结构，在机柜(1)的四个侧面上均设有进风口(11)，在磁悬浮风机(2)上设有冷却流道，其特征在于：还包括隔音板(3)，若干个隔音板(3)沿着磁悬浮风机(2)中进气道的圆周方向均匀分布，且相邻两隔音板(3)之间形成消音腔(30)，消音腔(30)与进风口(11)相连通，隔音板(3)的两端固定于机柜(1)内；
    在机柜(1)上设有强电接线口(4)、弱电接线口(5)、转子冷却风接口(6)和定子冷却水接口(7)，所述转子冷却风接口(6)连接一根管道，该管道伸于磁悬浮风机(2)的底端，在定子冷却水接口(7)上连接水管，水管与磁悬浮风机(2)上的冷却流道相连；所述机柜(1)的外壁上设有出风口(14)。
  2. 如权利要求1所述的磁悬浮离心式鼓风机机柜，其特征在于：所述隔音板(3)为圆弧状结构，包括内圆弧孔板(31)、外圆弧孔板(32)、中间消音棉(33)和端板，所述内圆弧孔板(31)和外圆弧孔板(32)相互平行设置，且内圆弧孔板(31)与外圆弧孔板(32)之间形成填充间隙，中间消音棉(33)填充于所述填充间隙内，端板固定于内、外圆弧孔板的四周并将填充间隙封闭。
  3. 如权利要求1所述的磁悬浮离心式鼓风机机柜，其特征在于：所述隔音板(3)的外壁上固定连接有连接片(34)，在连接片(34)上设有固定孔。
  4. 如权利要求1所述的磁悬浮离心式鼓风机机柜，其特征在于：所述进风口(11)处设有滤网。
PCT/CN2019/101955 2018-12-18 2019-08-22 一种磁悬浮离心式鼓风机机柜 WO2020125046A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811548424.6 2018-12-18
CN201811548424.6A CN109404318A (zh) 2018-12-18 2018-12-18 一种磁悬浮离心式鼓风机机柜

Publications (1)

Publication Number Publication Date
WO2020125046A1 true WO2020125046A1 (zh) 2020-06-25

Family

ID=65459619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/101955 WO2020125046A1 (zh) 2018-12-18 2019-08-22 一种磁悬浮离心式鼓风机机柜

Country Status (2)

Country Link
CN (1) CN109404318A (zh)
WO (1) WO2020125046A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114554747A (zh) * 2021-12-16 2022-05-27 国网江苏省电力有限公司经济技术研究院 一种基于物联网的配网三维可视化展示***

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109404345A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮风机的进风消音结构
CN109404318A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机机柜

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05126090A (ja) * 1991-11-06 1993-05-21 Matsushita Seiko Co Ltd 箱型扇風機
CN204126926U (zh) * 2014-09-16 2015-01-28 浙江特风风机有限公司 牢固型减音风机
CN206329520U (zh) * 2016-12-19 2017-07-14 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机
US20170227292A1 (en) * 2014-10-01 2017-08-10 E-Polytech Mfg. Sys, Llc Compact heat exchange system and method of cooling
CN207200506U (zh) * 2017-09-06 2018-04-06 山东天瑞重工有限公司 一种保护磁悬浮高速电机的冷却***
CN109404318A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机机柜
CN109404345A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮风机的进风消音结构
CN209340231U (zh) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 一种磁悬浮风机的进风消音结构
CN209340177U (zh) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机机柜

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864109B (zh) * 2015-01-22 2018-08-07 中国科学院声学研究所 一种轴流风机进风口***
CN205154679U (zh) * 2015-08-14 2016-04-13 石家庄金士顿轴承科技有限公司 一种空气悬浮离心鼓风机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05126090A (ja) * 1991-11-06 1993-05-21 Matsushita Seiko Co Ltd 箱型扇風機
CN204126926U (zh) * 2014-09-16 2015-01-28 浙江特风风机有限公司 牢固型减音风机
US20170227292A1 (en) * 2014-10-01 2017-08-10 E-Polytech Mfg. Sys, Llc Compact heat exchange system and method of cooling
CN206329520U (zh) * 2016-12-19 2017-07-14 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机
CN207200506U (zh) * 2017-09-06 2018-04-06 山东天瑞重工有限公司 一种保护磁悬浮高速电机的冷却***
CN109404318A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机机柜
CN109404345A (zh) * 2018-12-18 2019-03-01 南京磁谷科技有限公司 一种磁悬浮风机的进风消音结构
CN209340231U (zh) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 一种磁悬浮风机的进风消音结构
CN209340177U (zh) * 2018-12-18 2019-09-03 南京磁谷科技有限公司 一种磁悬浮离心式鼓风机机柜

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114554747A (zh) * 2021-12-16 2022-05-27 国网江苏省电力有限公司经济技术研究院 一种基于物联网的配网三维可视化展示***
CN114554747B (zh) * 2021-12-16 2023-11-24 国网江苏省电力有限公司经济技术研究院 一种基于物联网的配网三维可视化展示***

Also Published As

Publication number Publication date
CN109404318A (zh) 2019-03-01

Similar Documents

Publication Publication Date Title
WO2020125046A1 (zh) 一种磁悬浮离心式鼓风机机柜
WO2005018404A1 (fr) Unite de reduction de bruit pour aspirateur
WO2022247281A1 (zh) 充电桩
CN109578142A (zh) 集成式燃气轮机机组箱装体
CN104121232A (zh) 大型风机进出风消音塔
CN211778244U (zh) 一种主动降噪的通风装置
WO2020125087A1 (zh) 一种磁悬浮风机的进风消音结构
CN106762853A (zh) 一种用于工业风机的降噪装置
CN208040653U (zh) 一种空气压缩机用消声罩
CN210660275U (zh) 一种增程器发动机试验室排气***
CN104819051A (zh) 一种节能降耗柴油发电机组
CN209340231U (zh) 一种磁悬浮风机的进风消音结构
CN209340177U (zh) 一种磁悬浮离心式鼓风机机柜
CN210858940U (zh) 一种带有双层风道的超静音型柴油发电机组
CN212583819U (zh) 一种超静音低噪声发电机组
CN212061079U (zh) 一种计算机专用的无噪音式计算机散热装置
CN210769403U (zh) 一种冷却型风机
CN203056419U (zh) 加强散热型医疗it***专用配电柜
CN208399445U (zh) 一种快速降温的气相色谱仪柱温箱
CN208564997U (zh) 隔声罩
JP2010236538A (ja) 消音ボックス付送風機
CN218757960U (zh) 一种压缩机测试用隔音房
WO2022141763A1 (zh) 一种泳池热泵机
CN219672730U (zh) 一种发电机组
CN211144926U (zh) 一种隧道通风***用消声型扩压器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19899108

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19899108

Country of ref document: EP

Kind code of ref document: A1