CN105952666A - Novel fire fighting draught fan - Google Patents

Novel fire fighting draught fan Download PDF

Info

Publication number
CN105952666A
CN105952666A CN201610400346.XA CN201610400346A CN105952666A CN 105952666 A CN105952666 A CN 105952666A CN 201610400346 A CN201610400346 A CN 201610400346A CN 105952666 A CN105952666 A CN 105952666A
Authority
CN
China
Prior art keywords
shell body
additionally provided
inner housing
pipeline
outer shell
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.)
Pending
Application number
CN201610400346.XA
Other languages
Chinese (zh)
Inventor
文国栋
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.)
Chengdu Juzhi Industrial Design Co Ltd
Original Assignee
Chengdu Juzhi Industrial Design 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 Chengdu Juzhi Industrial Design Co Ltd filed Critical Chengdu Juzhi Industrial Design Co Ltd
Priority to CN201610400346.XA priority Critical patent/CN105952666A/en
Publication of CN105952666A publication Critical patent/CN105952666A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/06Units comprising pumps and their driving means the pump being electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/008Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/522Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/541Specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/582Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/58Cooling; Heating; Diminishing heat transfer
    • F04D29/582Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5853Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00Control
    • F05D2270/30Control parameters, e.g. input parameters
    • F05D2270/303Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

The invention relates to a novel fire fighting draught fan. The novel fire fighting draught fan comprises an outer shell body. An air inlet is formed in the left end of the outer shell body. An air outlet is formed in the right end of the outer shell body. An inner shell body is further arranged in the outer shell body. The bottom end of the inner shell body is fixedly connected with the bottom end of the outer shell body through a bracket. A motor is arranged in the inner shell body. An output shaft of the motor is provided with a plurality of blades. A dust filtrating screen is arranged in the position, located on the left portions of the blades, of the interior of the outer shell body. A sundry cavity is formed in the position, located on the left portion of the dust filtrating screen, of the bottom wall of the outer shell body. A cleaning opening is formed in the bottom end of the sundry cavity. The outer surface of the inner shell body is covered with an inner thermal insulating layer. A cooling water tank and a pump body are arranged at the top end of the exterior of the outer shell body. A water cooling pipeline is arranged in the inner shell body. A water outlet of the pump body communicates with one end of the water cooling pipeline through a first pipeline, and the other end of the water cooling pipeline communicates with a water return opening of the cooling water tank through a second pipeline. By means of the structure, high-temperature dense smoke and large-particle impurities in the high-temperature dense smoke can be resisted more effectively through the novel fire fighting draught fan, accordingly, the using performance of the novel fire fighting draught fan is improved, and the service life of the novel fire fighting draught fan is prolonged.

Description

Novel firefighting fan
Technical field
The present invention relates to a kind of Novel firefighting fan.
Background technology
In places such as skyscraper, hypogee, tunnel, drying rooms, it is often necessary to use firefighting fan, with when there being fire to occur, it is possible to be aerated taking a breath to high-temperature gas by firefighting fan, and discharge high temperature fumes.But for existing firefighting fan, it is limited to the restriction in structure and design, when it works long hours in high temperature environments, it is still and is easily damaged because high temperature fumes corrodes, firefighting fan also can be caused damage by the large granular impurity in the dense smoke simultaneously produced, thus had a strong impact on the normal work of firefighting fan, and these serviceability all leveraging firefighting fan and service lifes.
Summary of the invention
For overcoming above the deficiencies in the prior art, the technical problem to be solved in the present invention is to provide a kind of can more efficiently resist high temperature dense smoke and interior large granular impurity thereof in the course of the work, thus is greatly improved the serviceability of self and the Novel firefighting fan in service life.
The technical scheme is that a kind of Novel firefighting fan, including shell body, left end at described shell body is provided with air inlet, right-hand member at described shell body is provided with air outlet, it is additionally provided with inner housing in the inside of described shell body, and the bottom of described inner housing fixed with the bottom of described shell body by support and is connected, it is additionally provided with motor in the inside of described inner housing, the output shaft of described motor is horizontally disposed with and extend out to the left the outside of described inner housing, is additionally provided with multiple blade on the output shaft of described motor simultaneously;Dirt filtrating screen the most vertically it is provided with inside the shell body being positioned at described blade left, the diapire of shell body being positioned at the dust filtration net left is additionally provided with foreign material chamber, be additionally provided with clean-up port in the bottom in described foreign material chamber, the outer surface at described inner housing is also covered with inner insulating layer simultaneously;Outer tip end at described shell body further respectively has cooling water tank and the pump housing, and the described outlet of cooling water tank connects with the water inlet of the described pump housing, it is additionally provided with water cooled pipeline in the inside of described inner housing simultaneously, and the outlet of the described pump housing is connected with one end of described water cooled pipeline by the first pipeline, the other end of described water cooled pipeline passes through second pipe and connects with the water return outlet of described cooling water tank.
Above-mentioned Novel firefighting fan, the left side wall of wherein said inner housing is the hemispherical dome structure protruded to the left, and the inner surface at described shell body is also covered with outer thermal insulation layer simultaneously, and the outer surface at described first pipeline and second pipe is also all covered with pipe insulation.
Above-mentioned Novel firefighting fan, is wherein also associated with guide housing at the air outlet of described shell body, and the internal diameter of described guide housing is incremented by the most successively.
Above-mentioned Novel firefighting fan, wherein the left side at the dust filtration net is additionally provided with the floating rule extended before and after in the horizontal direction, described floating rule is also associated with vertically arranged montant, described montant is upward through the roof of described shell body and is slidably connected with the roof of described shell body, is additionally provided with handle on the top of described montant simultaneously.
Above-mentioned Novel firefighting fan, wherein the inside at described inner housing further respectively has temperature sensor, microcontroller and wireless transmitter, and the outfan of described temperature sensor is connected to the input of described microcontroller, the outfan of described microcontroller is connected to the input of described wireless transmitter.
The invention has the beneficial effects as follows: by using said structure, the present invention can more efficiently resist high temperature dense smoke and interior large granular impurity thereof in the course of the work, thus be greatly improved self serviceability and service life.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
Fig. 1 is the structural representation of Novel firefighting fan.
In figure: shell body 1, air inlet 2, air outlet 3, inner housing 4, support 5, motor 6, blade 7, dirt filtrating screen 8, foreign material chamber 9, clean-up port 10, cooling water tank 11, the pump housing 12, water cooled pipeline 13, the first pipeline 14, second pipe 15, guide housing 16, floating rule 17, montant 18, handle 19, temperature sensor 20.
Detailed description of the invention
As shown in Figure 1, a kind of Novel firefighting fan, including shell body 1, left end at shell body 1 is provided with air inlet 2, right-hand member at shell body 1 is provided with air outlet 3, it is additionally provided with inner housing 4 in the inside of shell body 1, and the bottom of inner housing 4 is connected by support 5 is fixing with the bottom of shell body 1, it is additionally provided with motor 6 in the inside of inner housing 4, the output shaft of motor 6 is horizontally disposed with and extend out to the outside of inner housing 4 to the left, on the output shaft of motor 6, it is additionally provided with multiple blade 7 simultaneously, so, rotated by motor 6 band moving vane 7, just high-temperature gas or dense smoke is made to enter from air inlet 2, and discharge from air outlet 3, inner housing 4 then can protect motor 6 effectively, avoid it by high-temperature gas or the direct erosion of dense smoke;Dirt filtrating screen 8 the most vertically it is provided with inside the shell body 1 being positioned at blade 7 left, with the large granular impurity in effective gas filtering and entering in shell body 1, the diapire of shell body 1 being positioned at dirt filtrating screen 8 left is additionally provided with foreign material chamber 9, it is additionally provided with clean-up port 10 in the bottom in foreign material chamber 9, outer surface at inner housing 4 is also covered with inner insulating layer, to prevent motor 6 by high temperature erosion further simultaneously;Outer tip end at shell body 1 further respectively has cooling water tank 11 and the pump housing 12, and the outlet of cooling water tank 11 connects with the water inlet of the pump housing 12, it is additionally provided with water cooled pipeline 13(further in the inside of inner housing 4 simultaneously, water cooled pipeline 13 can use the various existing structures such as U-shaped, screw type), and the outlet of the pump housing 12 is connected with one end of water cooled pipeline 13 by the first pipeline 14, the other end of water cooled pipeline 13 is connected with the water return outlet of cooling water tank 11 by second pipe 15, have effectively achieved the cooling by water within inner housing 4.
As preferably, for above-mentioned Novel firefighting fan, wherein the left side wall of inner housing 4 is the hemispherical dome structure protruded to the left, to reduce the resistance to the gas entered further, inner surface at shell body 1 is also covered with outer thermal insulation layer simultaneously, outer surface at the first pipeline 14 and second pipe 15 is also all covered with pipe insulation, the most just can be prevented effectively from high-temperature gas or dense smoke and heat the cooling water in cooling water tank 11 and water cooled pipeline 13.
As the most preferably, for above-mentioned Novel firefighting fan, at the air outlet of shell body 1, wherein it is also associated with guide housing 16, and the internal diameter of guide housing 16 is incremented by the most successively, with further such that high-temperature gas or the dense smoke discharged from air outlet can spread to surrounding in time.
As the most preferred, for above-mentioned Novel firefighting fan, wherein the left side at dirt filtrating screen 8 is additionally provided with the floating rule 17 extended before and after in the horizontal direction, floating rule 17 is also associated with vertically arranged montant 18, montant 18 is upward through the roof of shell body 1 and is slidably connected with the roof of shell body 1, is additionally provided with handle 19 on the top of montant 18 simultaneously.So, drive floating rule 17 to move up and down by operation montant 18, just dirt filtrating screen 8 conveniently can be cleared up.
As the most preferred, for above-mentioned Novel firefighting fan, wherein the inside at inner housing 4 further respectively has temperature sensor 20, microcontroller and wireless transmitter, and the outfan of temperature sensor 20 is connected to the input of microcontroller, the outfan of microcontroller is connected to the input of wireless transmitter.
In sum, by using said structure, the present invention can more efficiently resist high temperature dense smoke and interior large granular impurity thereof in the course of the work, thus be greatly improved self serviceability and service life.
Above in conjunction with accompanying drawing, the preferred embodiments of the disclosure and embodiment are explained in detail, but the present invention is not limited to the above-described embodiment and examples, in the ken that those skilled in the art are possessed, it is also possible to various changes can be made without departing from the inventive concept of the premise.

Claims (5)

1. a Novel firefighting fan, including shell body, left end at described shell body is provided with air inlet, right-hand member at described shell body is provided with air outlet, it is characterized in that: be additionally provided with inner housing in the inside of described shell body, and the bottom of described inner housing fixed with the bottom of described shell body by support and is connected, it is additionally provided with motor in the inside of described inner housing, the output shaft of described motor is horizontally disposed with and extend out to the left the outside of described inner housing, is additionally provided with multiple blade on the output shaft of described motor simultaneously;Dirt filtrating screen the most vertically it is provided with inside the shell body being positioned at described blade left, the diapire of shell body being positioned at the dust filtration net left is additionally provided with foreign material chamber, be additionally provided with clean-up port in the bottom in described foreign material chamber, the outer surface at described inner housing is also covered with inner insulating layer simultaneously;Outer tip end at described shell body further respectively has cooling water tank and the pump housing, and the described outlet of cooling water tank connects with the water inlet of the described pump housing, it is additionally provided with water cooled pipeline in the inside of described inner housing simultaneously, and the outlet of the described pump housing is connected with one end of described water cooled pipeline by the first pipeline, the other end of described water cooled pipeline passes through second pipe and connects with the water return outlet of described cooling water tank.
2. Novel firefighting fan as claimed in claim 1, it is characterized in that: the left side wall of described inner housing is the hemispherical dome structure protruded to the left, inner surface at described shell body is also covered with outer thermal insulation layer simultaneously, and the outer surface at described first pipeline and second pipe is also all covered with pipe insulation.
3. Novel firefighting fan as claimed in claim 1, it is characterised in that: at the air outlet of described shell body, it is also associated with guide housing, and the internal diameter of described guide housing is incremented by the most successively.
4. Novel firefighting fan as claimed in claim 1, it is characterized in that: be additionally provided with the floating rule extended before and after in the horizontal direction in the left side of the dust filtration net, described floating rule is also associated with vertically arranged montant, described montant is upward through the roof of described shell body and is slidably connected with the roof of described shell body, is additionally provided with handle on the top of described montant simultaneously.
5. Novel firefighting fan as claimed in claim 1, it is characterized in that: further respectively have temperature sensor, microcontroller and wireless transmitter in the inside of described inner housing, and the outfan of described temperature sensor is connected to the input of described microcontroller, the outfan of described microcontroller is connected to the input of described wireless transmitter.
CN201610400346.XA 2016-06-08 2016-06-08 Novel fire fighting draught fan Pending CN105952666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610400346.XA CN105952666A (en) 2016-06-08 2016-06-08 Novel fire fighting draught fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610400346.XA CN105952666A (en) 2016-06-08 2016-06-08 Novel fire fighting draught fan

Publications (1)

Publication Number Publication Date
CN105952666A true CN105952666A (en) 2016-09-21

Family

ID=56908034

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610400346.XA Pending CN105952666A (en) 2016-06-08 2016-06-08 Novel fire fighting draught fan

Country Status (1)

Country Link
CN (1) CN105952666A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438421A (en) * 2016-12-26 2017-02-22 宁夏软件工程院有限公司 Electrolytic plating factory with anti - crystal fan
CN108916125A (en) * 2018-09-29 2018-11-30 珠海格力电器股份有限公司 A kind of intelligent fan shield and its control method, controlling terminal, fan
CN111323199A (en) * 2020-03-31 2020-06-23 杭州佐格通信设备有限公司 Debris intercepting mechanism of wind tunnel and wind tunnel
CN111765108A (en) * 2020-06-29 2020-10-13 深圳源泰建设工程有限公司 Fireproof fluid machine
CN112833037A (en) * 2020-03-13 2021-05-25 淄博金河风机有限公司 Fan installation method
CN118030625A (en) * 2024-04-11 2024-05-14 连云港市安百利环保机械有限公司 Fan muffler

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000027796A (en) * 1998-07-10 2000-01-25 Toshiba Corp Fan motor
US20110038724A1 (en) * 2009-08-12 2011-02-17 Xcelaero Corporation Flow trim for vane-axial fans
CN202851397U (en) * 2012-09-28 2013-04-03 台州风星机电有限公司 Fire-fighting draught fan
CN203641123U (en) * 2013-11-14 2014-06-11 浙江志江风机有限公司 Axial-flow fan
CN204371786U (en) * 2014-12-04 2015-06-03 天津市金中基暖通净化设备有限公司 A kind of axial-flow blower of water-cooled
CN204827980U (en) * 2015-08-14 2015-12-02 江西佳通通风设备有限公司 Self -cooling fire control high temperature smoke exhaust fan
CN105402147A (en) * 2015-12-15 2016-03-16 成都聚智工业设计有限公司 Novel air blowing device for air conditioner
CN205243879U (en) * 2015-10-30 2016-05-18 天津通用科创风机有限公司 High temperature fire protection and smoke exhaust fan
CN205689452U (en) * 2016-06-08 2016-11-16 宁夏软件工程院有限公司 Novel firefighting fan

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000027796A (en) * 1998-07-10 2000-01-25 Toshiba Corp Fan motor
US20110038724A1 (en) * 2009-08-12 2011-02-17 Xcelaero Corporation Flow trim for vane-axial fans
CN202851397U (en) * 2012-09-28 2013-04-03 台州风星机电有限公司 Fire-fighting draught fan
CN203641123U (en) * 2013-11-14 2014-06-11 浙江志江风机有限公司 Axial-flow fan
CN204371786U (en) * 2014-12-04 2015-06-03 天津市金中基暖通净化设备有限公司 A kind of axial-flow blower of water-cooled
CN204827980U (en) * 2015-08-14 2015-12-02 江西佳通通风设备有限公司 Self -cooling fire control high temperature smoke exhaust fan
CN205243879U (en) * 2015-10-30 2016-05-18 天津通用科创风机有限公司 High temperature fire protection and smoke exhaust fan
CN105402147A (en) * 2015-12-15 2016-03-16 成都聚智工业设计有限公司 Novel air blowing device for air conditioner
CN205689452U (en) * 2016-06-08 2016-11-16 宁夏软件工程院有限公司 Novel firefighting fan

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438421A (en) * 2016-12-26 2017-02-22 宁夏软件工程院有限公司 Electrolytic plating factory with anti - crystal fan
CN108916125A (en) * 2018-09-29 2018-11-30 珠海格力电器股份有限公司 A kind of intelligent fan shield and its control method, controlling terminal, fan
CN112833037A (en) * 2020-03-13 2021-05-25 淄博金河风机有限公司 Fan installation method
CN112833037B (en) * 2020-03-13 2023-06-30 山东恒通风机有限公司 Fan using method
CN111323199A (en) * 2020-03-31 2020-06-23 杭州佐格通信设备有限公司 Debris intercepting mechanism of wind tunnel and wind tunnel
CN111765108A (en) * 2020-06-29 2020-10-13 深圳源泰建设工程有限公司 Fireproof fluid machine
CN111765108B (en) * 2020-06-29 2021-10-22 深圳源泰建设工程有限公司 Fireproof fluid machine
CN118030625A (en) * 2024-04-11 2024-05-14 连云港市安百利环保机械有限公司 Fan muffler

Similar Documents

Publication Publication Date Title
CN105952666A (en) Novel fire fighting draught fan
CN205689452U (en) Novel firefighting fan
CN202055915U (en) Environmentally-friendly ultra-quiet type diesel generator set
US9605869B2 (en) Radon exhaust system with internial gaseous fluid fan within diagnostic bypass filter fan apparatus
CN205610041U (en) Dustproof electric power cabinet of heat dissipation
CN205536366U (en) Heat exchanging ventilator
CN104791918A (en) Factory workshop dehumidifier
CN210799436U (en) Air suction device of high-temperature exhaust air cabinet
CN109083850A (en) A kind of firefighting fan of sprayable water mist
CN207550471U (en) A kind of vented exhaust system of watercraft engine room
CN106015121A (en) Air jet-type ventilator
CN216790288U (en) Air-conditioning type range hood
CN207363952U (en) A kind of fire-fighting smoke exhaust fan
CN203454330U (en) Energy-saving ventilating system of computer room
CN105180341A (en) Air supply device
KR101292011B1 (en) Apparatus and Method For Preventing Condensing And Ventilation In The Underground Space
CN204757142U (en) Install in outdoor new fan
CN204923294U (en) Air cooler
JP3185047U (en) Wet and dry gas cleaning equipment with hepa filter
CN106438421A (en) Electrolytic plating factory with anti - crystal fan
JP3218042U (en) Ventilation equipment
CN207728596U (en) One kind defending kitchen exhaust fan motor special
CN103470510A (en) Roots blower sound-insulation cover
CN206576773U (en) Smokeless electric oven
CN204176919U (en) A kind of wall-hung boiler with air-flow monitoring function

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160921

WD01 Invention patent application deemed withdrawn after publication