CN107477012A - A kind of new type high temperature air-introduced machine - Google Patents
A kind of new type high temperature air-introduced machine Download PDFInfo
- Publication number
- CN107477012A CN107477012A CN201710845688.7A CN201710845688A CN107477012A CN 107477012 A CN107477012 A CN 107477012A CN 201710845688 A CN201710845688 A CN 201710845688A CN 107477012 A CN107477012 A CN 107477012A
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- Prior art keywords
- main shaft
- axle
- terminal pad
- radiating
- high temperature
- Prior art date
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Links
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
-
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
- F05D2300/121—Aluminium
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of new type high temperature air-introduced machine, including frame, motor, main shaft, spiral case, impeller；Feature is that the electric machine main shaft shaft diameter of axle is more than the common electric machine main shaft diameter of axle；Main shaft one end sets the radiating sleeve for including terminal pad, radiating axle and circular baffle plate, and the through hole coordinated with the main shaft diameter of axle, terminal pad left end and motor connection are respectively provided with center；The axle that radiates is arranged in terminal pad, and right-hand member is connected with terminal pad and is embedded in terminal pad groove, and left end is abutted against with circular baffle plate；Circular baffle plate edge is connected with terminal pad, and radiating axle sets cooling fan blade/radiating fin along diameter of axle direction；Main shaft surrounding between circular baffle plate and spiral case sets heat-insulation layer；Main shaft end is fixed with impeller taper fit with oblique cone pin.Advantage is compact-sized, small volume, stabilization safe for operation, reduces traditional belt or shaft coupling transmission, and operating efficiency is high；Using natural heat dissipation, good heat dissipation effect, other cooling mediums are not required to, energy consumption is small, suitable for less than 800 DEG C working environments.
Description
Technical field
The invention belongs to blower unit field, more particularly to a kind of high temperature draught fan.
Background technology
Air-introduced machine is to be supplied gas side by side the machinery of body by the mechanical energy of input to improve gas pressure, is a kind of driven stream
Body machinery.It is widely used in the ventilation, dust discharge and cooling of factory, mine, tunnel, cooling tower, vehicle, ship and building；Boiler
Ventilation and air inducing with industrial furnace；Cooling and ventilation in the apparatus of air conditioning and domestic electric appliance；The drying of cereal and
Select and recommend；Inflation and propulsion of wind-tunnel wind regime and aircushion vehicle etc..Usual air-introduced machine has certain temperature in use and needed chronically, continuously
Ground is run, and the main shaft of traditional air-introduced machine will necessarily transmit very high heat, and this will cause the abrupt oxidization of lubricating oil in bearing, after
And the damage of bearing is caused, solution method is plus water cooling, scene must increase a series of water systems such as water pump, water cleaning systems, this
Sample increases operation and maintenance cost.The maximum operating temperature of common air-introduced machine is usually no more than 500 DEG C, far can not meet to give birth to
The demand of production. art.
Chinese patent application, application number 201210008628.7, application publication number CN102536914A, disclose a kind of height
Warm air-introduced machine, including motor, by motor-driven main shaft, the impeller installed in main shaft one end, spiral case, bearing block and installed in axle
Bearing in bearing, main shaft are arranged in bearing, radiating segment are provided with main shaft, radiating segment is positioned at bearing block close to spiral case
The main shaft shaft part of one side and spiral case between the one side of bearing block, bearing block is water-cooling bearing block；High temperature draught fan is also
Including air intake kuppe, air intake kuppe is arranged on the outside of the air inlet of spiral case；Motor is frequency control motor；The radiating of main shaft
Water-cooling set or air cooling equipment are set with section.Radiating segment is set on the main shaft of the high temperature draught fan, increases dissipating for main shaft
Hot area and radiating rate, reduce influence of the main shaft heat transfer to bearing, meanwhile, bearing is cooled down by bearing block,
Further ensure the service life of bearing.Shortcoming is that the high temperature draught fan sets shaft coupling, bearing block, adds main shaft
Length is so as to increase the volume of air-introduced machine, in the narrow and small scene inconvenience installation of working space and maintenance；Water-cooling bearing block can be with cold
But bearing, but a series of water systems such as uninterrupted water supply, site setup water pump, water cleaning systems are needed, so increasing makes
With and maintenance cost；The other high temperature draught fan uses traditional shaft coupling transmission as traditional air-introduced machine, and efficiency is low, uses
Chilled(cooling) water supply (CWS) cools, and significantly limit research and development of the air-introduced machine in high temperature resistant direction.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of new type high temperature air-introduced machine, compact-sized, body
Product stabilization small, safe for operation, reduce the setting of shaft coupling, operating efficiency is high, and energy consumption is small, suitable for less than 800 DEG C building rings
Border.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of new type high temperature air-introduced machine, including frame, rack-mounted motor, by motor-driven main shaft, installation
Spiral case, impeller in main shaft one end；It is characterized in that the electric machine main shaft shaft diameter of axle is more than the common electric machine main shaft diameter of axle, it is ensured that high temperature shape
The intensity of condition lower main axis；Radiating segment is set to close to motor side on described main shaft, radiating sleeve is set on the outside of described radiating segment；Institute
The radiating sleeve stated includes terminal pad, radiating axle and circular baffle plate, the through hole coordinated with the main shaft diameter of axle is respectively provided with three center, even
Face left end and motor connection are connect, radiating axle is arranged in terminal pad, and right-hand member is connected with terminal pad and is embedded in terminal pad groove, left
End is abutted against with circular baffle plate, and circular baffle plate edge is connected with terminal pad, and radiating axle sets cooling fan blade/radiating fin along diameter of axle direction
Piece；Main shaft between described circular baffle plate and spiral case is set to thermal insulation separation hot arc, and thermal insulation separation hot arc surrounding sets heat-insulation layer, and filling is protected
Warm cotton is heat-insulated, reduces the heat for being thermally conducted to motor, prevents radiating sleeve from ftractureing at high temperature；Described main shaft end is set to impeller
Linkage section, main shaft are connected with impeller taper fit, are fixed with oblique cone pin connection, convenient disassembly is laborsaving.
As currently preferred technical scheme, described radiating segment length is the 1/3-1/2 that main shaft goes out shaft length.
As currently preferred technical scheme, for convenience of processing, described terminal pad and circular baffle plate are cast member；
The heat-insulation layer set between radiating sleeve and spiral case, main shaft, the high temperature of main shaft shaft is obstructed, prevents from opening under radiating sleeve hot environment
Split.
As currently preferred technical scheme, also set up safety net inside described terminal pad, protection main shaft shaft and
Radiate axle.
As currently preferred technical scheme, described radiating end is made using aluminum material, good heat dissipation effect.
As currently preferred technical scheme, described radiating sleeve bottom sets arc-shaped bracket, is connected, is used for frame
Support connects radiating sleeve.
As the preferred technical solution of the present invention, described high temperature draught fan also includes air intake kuppe, air intake kuppe
It is arranged on the outside of the air inlet of spiral case.
Compared with prior art, it is an advantage of the invention that compact-sized, small volume, stabilization safe for operation, are reduced traditional
The transmission of belt or shaft coupling, operating efficiency are high；Cooling mechanism uses natural heat dissipation, good heat dissipation effect, is not required to additional cooling
Medium, energy consumption is small, the energy is saved, suitable for less than 800 DEG C working environments.
Brief description of the drawings
Below, with reference to accompanying drawing, the present invention will be further described.
Fig. 1 is cross-sectional view of the present invention.
In figure：10- frame 11- arc-shaped bracket 20- motor 30- main shaft 40- spiral case 50- impeller 60- radiating sleeves
61- terminal pad 611- safety nets 62- radiating axle 621- cooling fan blades/radiating fin 63- circular baffle plate 70- heat-insulation layers
80- oblique cone pin 90- air intake kuppes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is purged, be complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment
As shown in figure 1, a kind of new type high temperature air-introduced machine, including frame 10, rack-mounted motor 20, driven by motor
Dynamic main shaft 30, the spiral case 40 installed in main shaft one end, impeller 50, motor 10 use heat resisting motor, only need to periodically inject oil
Fat is safeguarded；It is characterized in that the shaft diameter of axle of electric machine main shaft 30 is more than the common electric machine main shaft diameter of axle, it is ensured that under high-temperature situation
The intensity of main shaft；Radiating segment is set to close to the side of motor 20 on main shaft 30, radiating sleeve 60 is set on the outside of radiating segment；Radiating sleeve 60 includes
Terminal pad 61, radiated axle 62 and circular baffle plate 63, and the through hole coordinated with the diameter of axle of main shaft 30, terminal pad 61 are respectively provided with three center
Left end is connected with motor 20, and radiating axle 62 is arranged in terminal pad 61, right-hand member and the bolt connection of terminal pad 61 and embedded terminal pad
In groove, left end is abutted against with circular baffle plate 63, and the edge of circular baffle plate 63 is connected with terminal pad 61, and radiating axle 62 is set along diameter of axle direction
Cooling fan blade/radiating fin 621；Main shaft between circular baffle plate 63 and spiral case 40 is set to thermal insulation separation hot arc, thermal insulation separation hot arc four
Set heat-insulation layer 70 week, filling heat-preservation cotton is heat-insulated, reduces the heat for being thermally conducted to motor 20, prevents radiating sleeve 60 from opening at high temperature
Split；The end of main shaft 30 is set to impeller linkage section, and main shaft 30 is connected with the taper fit of impeller 50, is connected, torn open with oblique cone pin 70
Fill convenient and strength-saving.Cooling fan blade is used in the present embodiment accompanying drawing 1.
The shaft diameter of axle of electric machine main shaft 30 is 2-4.5 times of the common electric machine main shaft diameter of axle.
Radiating segment length is the 1/3-1/2 that main shaft 30 goes out shaft length.
For convenience of processing, described terminal pad 61 and circular baffle plate 63 are cast member；Between radiating sleeve and spiral case, main shaft
The heat-insulation layer of setting, the high temperature of main shaft shaft is obstructed, prevents from ftractureing under radiating sleeve hot environment.
Safety net 611, the protection shaft of main shaft 30 and radiating axle 62 are also set up inside terminal pad 61.
The top even circumferential of radiating sleeve 60 sets heat emission hole, convenient radiating.
Radiating axle 62 is made using aluminum material, good heat dissipation effect.
The bottom of radiating sleeve 60 sets arc-shaped bracket 11, is connected with frame 10, and radiating sleeve 60 is connect for holding in the palm.
High temperature draught fan also includes air intake kuppe 90, and air intake kuppe 90 is arranged on the outside of the air inlet of spiral case 40.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of new type high temperature air-introduced machine, including frame (10), rack-mounted motor (20), by motor-driven main shaft
(30), the spiral case (40) installed in main shaft one end, impeller (50)；It is characterized in that electric machine main shaft (30) shaft diameter of axle is more than commonly
The electric machine main shaft diameter of axle；Radiating segment is set to close to motor (20) side on described main shaft (30), is set on the outside of described radiating segment scattered
Hot jacket (60)；Described radiating sleeve (60) includes terminal pad (61), radiate axle (62) and circular baffle plate (63), equal at three center
The through hole coordinated with main shaft (30) diameter of axle is set, and terminal pad (61) left end is connected with motor (20), and radiating axle (62), which is arranged on, to be connected
Connecing in disk (61), in right-hand member and terminal pad (61) bolt connection and embedded terminal pad groove, left end is abutted against with circular baffle plate (63),
Circular baffle plate (63) edge is connected with terminal pad (61), and radiating axle (62) sets cooling fan blade/radiating fin along diameter of axle direction
(621)；Main shaft between described circular baffle plate (63) and spiral case (40) is set to thermal insulation separation hot arc, and thermal insulation separation hot arc surrounding sets guarantor
Warm layer (70), fill heat-preservation cotton；Described main shaft (30) end is set to impeller linkage section, and main shaft (30) is matched somebody with somebody with impeller (50) taper
Close connection.
A kind of 2. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described electric machine main shaft (30) shaft
The diameter of axle is 2-4.5 times of the common electric machine main shaft diameter of axle.
A kind of 3. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described radiating segment length is main shaft
(30) 1/3-1/2 of shaft length is gone out.
A kind of 4. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described terminal pad (61) and circle
Baffle plate (63) is cast member.
A kind of 5. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Inside described terminal pad (61) also
Safety net (611) is set.
A kind of 6. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described radiating sleeve (60) top circle
It is uniformly arranged heat emission hole, convenient radiating week.
A kind of 7. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described radiating axle (62) uses aluminium
Material makes.
A kind of 8. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described radiating sleeve (60) bottom is set
Arc-shaped bracket (11) is put, is connected with frame (10).
A kind of 9. new type high temperature air-introduced machine according to claim 1, it is characterised in that：Described high temperature draught fan also includes
Air intake kuppe (90), air intake kuppe (90) are arranged on the outside of the air inlet of spiral case (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710845688.7A CN107477012B (en) | 2017-09-19 | 2017-09-19 | Novel high-temperature induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710845688.7A CN107477012B (en) | 2017-09-19 | 2017-09-19 | Novel high-temperature induced draft fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107477012A true CN107477012A (en) | 2017-12-15 |
| CN107477012B CN107477012B (en) | 2023-12-22 |
Family
ID=60585464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710845688.7A Active CN107477012B (en) | 2017-09-19 | 2017-09-19 | Novel high-temperature induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107477012B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125055A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Volute assembly of high speed electric direct drive centrifugal fan |
| CN114526253A (en) * | 2022-04-24 | 2022-05-24 | 佛山市南海九洲普惠风机有限公司 | Small boiler draught fan |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338125A (en) * | 2010-07-23 | 2012-02-01 | 钱素红 | Heat resistance blower fan |
| CN204284006U (en) * | 2014-10-15 | 2015-04-22 | 洛阳北玻台信风机技术有限责任公司 | A kind of front step bearing radiation system of motor of kiln Heating Cyclic blower fan |
| CN206175289U (en) * | 2016-11-08 | 2017-05-17 | 扬州宏远新材料股份有限公司 | Grease proofing draught fan |
| CN107100868A (en) * | 2017-06-07 | 2017-08-29 | 江苏恒康机电有限公司 | Inserted high-temperature fan |
| CN206487639U (en) * | 2016-12-27 | 2017-09-12 | 天津金鹏机电设备有限公司 | A kind of centrifugal blower case |
| CN207420906U (en) * | 2017-09-19 | 2018-05-29 | 张家港保税区创典炉窑通风设备有限公司 | A kind of new type high temperature air-introduced machine |
-
2017
- 2017-09-19 CN CN201710845688.7A patent/CN107477012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338125A (en) * | 2010-07-23 | 2012-02-01 | 钱素红 | Heat resistance blower fan |
| CN204284006U (en) * | 2014-10-15 | 2015-04-22 | 洛阳北玻台信风机技术有限责任公司 | A kind of front step bearing radiation system of motor of kiln Heating Cyclic blower fan |
| CN206175289U (en) * | 2016-11-08 | 2017-05-17 | 扬州宏远新材料股份有限公司 | Grease proofing draught fan |
| CN206487639U (en) * | 2016-12-27 | 2017-09-12 | 天津金鹏机电设备有限公司 | A kind of centrifugal blower case |
| CN107100868A (en) * | 2017-06-07 | 2017-08-29 | 江苏恒康机电有限公司 | Inserted high-temperature fan |
| CN207420906U (en) * | 2017-09-19 | 2018-05-29 | 张家港保税区创典炉窑通风设备有限公司 | A kind of new type high temperature air-introduced machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125055A1 (en) * | 2018-12-18 | 2020-06-25 | 南京磁谷科技有限公司 | Volute assembly of high speed electric direct drive centrifugal fan |
| CN114526253A (en) * | 2022-04-24 | 2022-05-24 | 佛山市南海九洲普惠风机有限公司 | Small boiler draught fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107477012B (en) | 2023-12-22 |
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