CN113623249A - Parallel type efficient axial flow fan with partition plates arranged in rectangular outlet diffusion cylinder - Google Patents

Parallel type efficient axial flow fan with partition plates arranged in rectangular outlet diffusion cylinder Download PDF

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Publication number
CN113623249A
CN113623249A CN202110991178.7A CN202110991178A CN113623249A CN 113623249 A CN113623249 A CN 113623249A CN 202110991178 A CN202110991178 A CN 202110991178A CN 113623249 A CN113623249 A CN 113623249A
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China
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diffusion cylinder
outlet
axial flow
fan
diffusion
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CN202110991178.7A
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CN113623249B (en
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李景银
熊琎
成铠
郭朋华
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • 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
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • 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
    • F04D29/002—Details, component parts, or accessories 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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • 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

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

Abstract

A parallel high-efficient axial fan which adopts the rectangular outlet diffusion cylinder and is internally provided with a clapboard, a plurality of fans are arranged in a compact parallel mode, any one of the fans comprises an inlet current collector, an inlet current collector 7 is fixed on the outer wall of a room to be ventilated, a 'well' -shaped metal grid is arranged in the inlet current collector, the inlet current collector is directly connected with the diffusion cylinder through an impeller shell at the rear section of the inlet current collector, a driving motor is arranged in the diffusion cylinder through a supporting bracket, the driving motor and the axial flow impeller adopt a direct connection mode, the clapboard is arranged at the rear part of the driving motor in the diffusion cylinder, and a shutter is arranged at the outlet of the diffusion cylinder; according to the invention, through the gradual change structure of the circle-to-rectangle shape of the outlet of the diffusion cylinder and the partition plate structure for controlling the equivalent expansion angle of the airflow, the mounting size in the height direction is fully utilized, the outlet speed of the fan is reduced, and the static pressure of the fan is increased, so that the ventilation quantity of the fan is improved, and the pneumatic performance parameters such as the static pressure efficiency and the energy efficiency ratio of the whole machine are further improved.

Description

Parallel type efficient axial flow fan with partition plates arranged in rectangular outlet diffusion cylinder
Technical Field
The invention belongs to the field of fluid machinery, and particularly relates to an axial flow fan adopting a novel diffusion cylinder structure, which mainly relates to a large number of axial flow fans which are closely arranged side by side and operate, and can improve the pneumatic performance and the energy efficiency ratio of a low-pressure axial flow fan for an animal husbandry workshop.
Background
At present, a large-scale and intensive breeding mode is gradually replacing the traditional scattered and family breeding mode in the past, and is the development direction of the modern large-scale breeding industry. Under airtight production environment is concentrated to high density at large-scale plant, because the livestock is concentrated and the growing power is vigorous, lead to that indoor temperature is high, humidity is big, the air is dirty, if do not have good ventilation control system, then light health and the growth rate of seriously influence livestock influence, influence the reproductive rate of domestic animal, then lead to the mortality of livestock and poultry to rise, greatly improve the operation cost of plant and reduce its economic benefits. The good ventilation system is established, so that the living and growing environment of livestock in a farm can be effectively controlled. The ventilator with high energy efficiency ratio is key equipment for controlling the oxygen content, humidity and temperature of indoor air environment of a farm, and harmful substances such as ammonia gas, hydrogen sulfide, water vapor, dust and the like contained in indoor dirty air, and reducing production cost.
At present, the ventilation equipment of large-scale livestock farms is all axial flow fans. The axial flow fan has the advantages of large ventilation volume, small radial size, simple structure and easy installation, but has the defects of large dynamic pressure and small static pressure of the fan, and needs a good diffusion cylinder to reduce the dynamic pressure to improve the static pressure of the fan and improve the energy efficiency ratio of the fan. The existing axial flow fan diffusion cylinder for the farm adopts a conical diffusion cylinder, the outlet of the diffusion cylinder is circular, but is limited by the space arranged side by side, and the diameter of the outlet of the diffusion cylinder cannot be further increased, so that the improvement of the static pressure efficiency and the energy efficiency ratio of the fan is limited. Secondly, the axial flow fan used in the large-scale farm at present emphasizes the design and development of the high-efficiency impeller, and the research is more, but the improvement and the research on the diffusion cylinder are less.
For large-scale farms, ventilation systems require many large axial fans to run in parallel to meet the demand for large amounts of fresh air required by large numbers of livestock to increase the breeding density. This requires many fans to be deployed in a confined space and to be placed side by side. Many large-traffic axial fan parallel operation of plant, diffusion section of thick bamboo are adjacent closely to be placed, often receive the restriction of side by side size, have to reduce the export diameter of diffusion section of thick bamboo, lead to diffusion section of thick bamboo export speed bigger than normal, have restricted the increase of static pressure and the improvement of energy efficiency ratio, lead to the ventilation blower running cost to promote, breed the benefit reduces. Therefore, the improvement of the diffusion cylinder is an effective technical way for improving the static pressure efficiency and the energy efficiency ratio of the fan and developing a large intensive farm.
Disclosure of Invention
In order to further improve the energy efficiency ratio of the axial flow fans for the farms which are closely arranged in parallel, the invention aims to provide a parallel type efficient axial flow fan which adopts a rectangular outlet diffusion cylinder and is internally provided with a partition plate, the diffusion cylinder can reduce the outlet dynamic pressure of the axial flow fan to the maximum extent by reasonably utilizing the limited space, the outlet static pressure of the axial flow fan is increased, the recovery capability of the outlet dynamic pressure of the fan is effectively improved, and further the energy efficiency ratio and the ventilation and air exchange flow rate of the fan are improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a parallel high-efficient axial fan which adopts a rectangular outlet diffusion cylinder and is internally provided with a partition plate adopts a compact parallel arrangement mode among a plurality of fans, wherein any one fan comprises an inlet current collector 7, an axial flow impeller 2 and a diffusion cylinder 1; an inlet current collector 7 is fixed on the outer wall of a room needing ventilation, a 'well' -shaped metal grid 8 is installed inside the inlet current collector 7, the inlet current collector 7 is directly connected with a diffusion cylinder 1 through an impeller shell at the rear section of the inlet current collector, a driving motor 4 is installed in the diffusion cylinder 1 through a supporting bracket 5, the driving motor 4 and an axial flow impeller 2 are in a direct connection mode, a partition plate 3 is placed inside the diffusion cylinder 1 and behind the driving motor 4, and a shutter 6 is installed at the outlet of the diffusion cylinder 1.
The starting end of the clapboard 3 starts from the rear part of the driving motor 4, and the terminal end of the clapboard 3 is close to the outlet of the diffusion cylinder 1, but the installation positions of the shutter 6 and the driving motor 4 are not influenced.
The partition board 3 is installed in a horizontal mode or a mode of not exceeding an inclination angle of 15 degrees.
The thickness of the partition plate 3 is not more than 6mm and is fixed on the shell of the diffusion cylinder 1.
The outlet of the diffusion cylinder 1 is rectangular or elliptical; comprises a rectangle or an ellipse with constant transverse width and increased longitudinal height; or square; or an oval or domed rectangular outlet.
The supporting bracket 5 is of a straight plate lap joint structure.
The supporting bracket 5 adopts a flat oval structure with the cross section similar to that of a wing.
The two ends of the upper surface and the lower surface of the supporting bracket 5 are formed in a welding mode.
The inlet of the diffusion cylinder 1 is circular, and the outlet is rectangular.
The invention has the advantages that:
(1) compared with the traditional conical diffusion cylinder, the invention adopts the diffusion cylinder outlet with larger outlet area; the circle from the inlet to the outlet of the diffusion cylinder (1) is changed into a rectangular shape and a gradual change form of the circle from the inlet to the outlet, and the static pressure capability of the fan is improved by reducing the dynamic pressure of the outlet of the diffusion cylinder, so that the energy efficiency ratio of the whole machine and the air volume of ventilation are improved; in order to control the degree of diffusion of the diffuser.
(2) The outlet of the diffusion cylinder can adopt a symmetrical rectangle or an ellipse-like shape relative to the plane of the motor shaft or an asymmetrical rectangle or an ellipse-like shape according to different sizes of the installation space so as to fully utilize the size of the height space. The equivalent diffusion angle can be effectively controlled within an optimal range by matching with the partition plate; the outlet of the diffusion cylinder is rectangular, so that the louver is conveniently changed from the inlet of a collector of the fan to the outlet of the diffusion cylinder, the disturbance of the louver on the flow field of the fan is reduced to the minimum degree, and the efficiency of the fan is further improved.
(3) The utility model discloses a diffusion section of thick bamboo, at diffusion section of thick bamboo internally mounted baffle (3), baffle (3) thickness is 6mm, when effectively increasing diffusion section of thick bamboo exit expansion area ratio, guaranteed that the equivalent expansion angle of diffusion section of thick bamboo is in high-efficient design range to under the condition that does not increase or increase diffusion section of thick bamboo (1) axial length slightly, still keep high diffusion section of thick bamboo efficiency, still play export air current water conservancy diversion and promote diffusion bucket intensity, reduce the effect of deflection simultaneously.
(4) The diffusion cylinder has the advantages of reliable structure, small pneumatic loss, high static pressure recovery coefficient and high overall energy efficiency ratio. The processing and manufacturing difficulty of the diffusion cylinder provided by the invention is the same as that of the conventional diffusion cylinder, and the diffusion cylinder is convenient to popularize and use.
Drawings
Fig. 1 is an axial side view of the whole machine.
Fig. 2A is an axial sectional view of the whole machine.
Fig. 2B is a front view of the whole machine.
Fig. 3 is a back view of the whole machine.
Fig. 4 is a schematic view of a diffuser shell.
Fig. 5 shows an axial fan impeller, a motor and a fixing device thereof.
Fig. 6 is a schematic view of a parallel configuration of a plurality of axial flow fans.
Fig. 7 is an embodiment of a diffusion cylinder structure in an elliptical form.
Fig. 8 shows a dome-shaped rectangular type diffuser structure.
Fig. 9 shows a structure in which a partition is provided in a rectangular diffusion tube.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
Referring to fig. 1, 2A, 2B, 3, a parallel high-efficiency axial flow fan with a partition plate in a rectangular outlet diffusion cylinder, a plurality of fans are arranged in a compact parallel manner, referring to fig. 6, an inlet current collector 7 is fixed on a wall through 8 screws and is arranged side by side with other fans of the same type, more axial flow fans can be arranged in a limited wall space and the overall ventilation volume is improved, wherein any one of the fans comprises the inlet current collector 7, an axial flow impeller 2 and the diffusion cylinder 1; an inlet current collector 7 is fixed on the outer wall of a room needing ventilation through bolts, a 'well' -shaped metal grid 8 is arranged in the inlet current collector 7, and as shown in figure 4, the inlet current collector 7 is directly connected with the diffusion cylinder 1 through an impeller shell at the rear section of the inlet current collector 7; as shown in fig. 5, a driving motor 4 is installed in the diffusion cylinder 1 through a support bracket 5, and the driving motor 4 and the axial flow impeller 2 are directly connected; a partition plate 3 is arranged in the diffusion cylinder 1 and at the rear part of a driving motor 4, and a shutter 6 is arranged at the outlet of the diffusion cylinder 1.
The starting end of the clapboard 3 starts from the rear part of the driving motor 4, and the terminal end of the clapboard 3 is close to the outlet of the diffusion cylinder 1, but the installation position of the shutter 6 is not influenced.
The baffle 3 is installed horizontally or in a mode of not exceeding an inclination angle of 15 degrees according to the requirements of the outlet airflow direction and the equivalent expansion angle of the upper part and the lower part of the baffle.
The thickness of the partition plate 3 is not more than 6mm, and the partition plate is fixed on the shell of the diffusion cylinder 1 by welding or bolts.
Referring to fig. 7, 8 and 9, the outlet shape of the diffuser 1 is rectangular or oval, and depending on the installation space, the center of the outlet shape of the diffuser may or may not be located on the motor axis; comprises a rectangle or an ellipse with constant transverse width and increased longitudinal height; or square; or an oval or domed rectangular outlet.
The supporting bracket 5 is of a straight plate lap joint structure, and the straight plate can recover the rotation kinetic energy of the airflow at the outlet of the fan blade, so that the static pressure and the pneumatic efficiency of the fan are improved.
The supporting bracket 5 is of a flat oval structure with the cross section similar to that of a wing, the two ends of the upper surface and the lower surface of the supporting bracket 5 are formed in a welding mode, and the supporting bracket 5 can also be supported by four steel plates according to different motor weights in order to ensure the stability of the supporting structure.
The inlet of the diffusion cylinder 1 is circular, the outlet of the diffusion cylinder is rectangular, in order to enable outlet airflow to flow more smoothly and reduce flow loss, the changing molded line from the circular inlet to the rectangular outlet is generated by adopting a lofting curve in the shape of a circular arc, and the specific section transition molded line can be seen through a graph shown in figure 1 or other related graphs.
The working and design principle of the invention is as follows: the outlet of the diffusion cylinder 1 is of a rectangular structure, the condition that the height space is abundant can be fully utilized under the condition that a plurality of fans which run in parallel are placed side by side and the transverse space is limited, the outlet area of the diffusion cylinder 1 of the fans is effectively enlarged, so that the flow velocity of airflow at the outlet of the fans is reduced, dynamic pressure is recovered, static pressure of the fans is increased, meanwhile, the partition plate 3 is arranged in the diffusion cylinder 1, the equivalent expansion angle of a diffusion channel in the diffusion cylinder can be effectively controlled, the air current diffusivity is controlled, and the flow loss of the diffusion cylinder 1 is reduced. According to the air flow continuity equation, the flow velocity of the air flow at the outlet can be reduced by increasing the outlet area of the diffusion cylinder, and the dynamic pressure calculation formula is Pd＝0.5*ρ*v2Wherein ρ is the air density, and v is the air velocity, because the outlet dynamic pressure reduces, and then useless kinetic energy that the dynamic pressure of fan outlet air current taken away will also reduce, reduce the energy loss of fan promptly. From the energy perspective, the energy added to the gas by the impeller is (gas static pressure increase + outlet dynamic pressure + flow loss) flow, so that the flow loss is reduced, and the key link of the impeller acting is also reduced.
For any axial flow fan, the calculation formula of the whole machine static pressure efficiency is eta-PstQ/W, wherein PstThe static pressure of the fan rises, Q is the volume flow of the fan, W is the power consumption of the motor, and the energy efficiency ratio calculation formula is EER (equal to Q/W). Therefore, the outlet speed of the fan diffusion cylinder is reduced, the dynamic pressure of the outlet of the fan can be reduced, the flow loss is reduced, the work of the impeller can also be reduced, and the energy efficiency ratio of the axial flow fan can be effectively improved under the condition that the flow of the fan is not changed.
The first embodiment is as follows:
according to the technical scheme of the invention, based on the widely applied commercial flow field calculation program, the method is special for a certain livestock breeding industryA51-inch fan is used for calculation and comparison, and an ordinary conical diffusion cylinder is adopted in an original fan. Firstly, the performance curve of the whole fan is calculated, and is matched with an actual test result, so that the calculation settings such as an algorithm, a grid and the like are proved to be correct. Secondly, the axial flow fan adopting the common conical diffusion cylinder and the axial flow fan adopting the novel diffusion cylinder are compared and calculated. The rated rotation speed of the fan is 640rpm, the outer diameter of the fan impeller is 51 inches, and the designed air volume is 50000m3And h, the design static pressure of the fan is 25 Pa. According to the computational fluid dynamics numerical experiment result, compared with the traditional axial flow fan, the energy efficiency ratio of the axial flow fan is improved from 28.1 to 30.9, and the static pressure efficiency of the whole machine is improved by 3.05%. Flow field displays indicate that fan exit velocity is significantly reduced with the new diffuser, which is only an improvement and effect provided by the applicant with the new diffuser with a square exit to demonstrate the effect of the invention.
When this fan diffuser 1 adopts bigger export, need to design the axial length of diffuser to guarantee that the flow loss in the diffuser is minimum. Referring to a traditional conical diffusion tube expansion angle defining method, an equivalent expansion angle concept is adopted to define and design and calculate the expansion angle of the diffusion tube 1, and the calculation method is as follows: firstly, the area A of a rectangular or elliptical outlet isoutConverted to equivalent exit radius RoutI.e. Rout＝(Aout/π)0.5For a diffuser tube of any shape, the equivalent expansion angle α is arctan ((R)out-Rin) L), wherein L is the axial length of the diffuser barrel. In this embodiment, keep the equivalent divergence angle of the new structure in the high-efficient range, when this fan adopts the major-diameter ratio to be 1.5: 1, the energy efficiency ratio is improved from 28.1 to 32.1 when the outlet is in an oval shape, and the static pressure efficiency of the whole machine is improved by 3.55 percent; when the length-width ratio of the fan is 1.5: 1, the energy efficiency ratio of the novel diffusion tube with the semicircular top rectangular outlet is improved from 28.1 to 31.3, and the static pressure efficiency of the whole machine is improved by 3.09%. The two diffuser tube structure embodiments described above are shown in fig. 7 and 8.
Example two:
according to the technical scheme of the invention, widely-applied commercial stream is usedAnd a field calculation program is used for calculating and comparing a special 57-inch fan for a certain livestock breeding industry. The original fan adopts a common conical diffusion cylinder. The axial flow fan using the ordinary conical diffusion cylinder and the axial flow fan using the diffusion cylinder (with the partition plate) of the present invention were compared and calculated. The rated speed of the fan is 700rpm, the outer diameter of the fan impeller is 57 inches, and the designed air volume is 60000m3And h, the design static pressure of the fan is 25 Pa. When a common conical diffuser is used, the energy efficiency ratio is 36.1. In the embodiment, the maximum transverse length of the diffusion cylinder is kept unchanged, and the outlet area of the diffusion cylinder is increased by increasing the size of the diffusion cylinder in the height direction. The aspect ratio of the outlet of the diffuser with the semi-dome-rectangular outlet was 1.5: 1, meanwhile, a partition plate is additionally arranged in the diffusion cylinder, the equivalent expansion angle of the new diffusion cylinder (provided with the partition plate) is kept in a high-efficiency equivalent diffusion angle range, and the energy efficiency ratio of the fresh air fan is improved from 36.1 to 37.9. An embodiment of the diffuser cartridge structure is shown in fig. 9.
Obviously, the invention can also be used for axial fans of other diameters, and the enhancement and improvement effects can be obtained. The above description is only intended to illustrate some embodiments of the present invention, and not to limit the present invention, and any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the present invention.

Claims (9)

1. A parallel type efficient axial flow fan adopting a rectangular outlet diffusion cylinder and a partition plate arranged in the diffusion cylinder is characterized in that a plurality of fans are arranged in a compact parallel mode, and any one fan comprises an inlet current collector (7), an axial flow impeller (2) and a diffusion cylinder (1); import collector (7) are fixed on the outer wall in the room that needs ventilate, import collector (7) internally mounted "well" style of calligraphy metal grid (8), import collector (7) are directly continuous with diffusion section of thick bamboo (1) through the impeller shell of its back end, install driving motor (4) through support bracket (5) in diffusion section of thick bamboo (1), driving motor (4) and axial flow impeller (2) adopt the direct mode of linking, place baffle (3) at driving motor (4) rear portion inside diffusion section of thick bamboo (1), shutter (6) are installed to diffusion section of thick bamboo (1) export.
2. A parallel high-efficiency axial flow fan with a partition board in a rectangular outlet diffusion cylinder according to claim 1, characterized in that the starting end of the partition board (3) starts from the rear part of the driving motor (4), and the terminal end of the partition board (3) is close to the outlet of the diffusion cylinder (1) but is limited by the installation position of the shutter (6) which is not affected.
3. A parallel high efficiency axial flow fan with a baffle inside a rectangular outlet diffuser according to claim 1, characterized in that the baffle (3) is installed horizontally or with an inclination angle not exceeding 15 °.
4. A parallel high efficiency axial flow fan with a baffle inside a rectangular outlet diffuser according to claim 1, characterized in that the thickness of the baffle (3) is 6 mm.
5. A parallel high-efficiency axial flow fan with a partition plate in a rectangular outlet diffusion cylinder according to claim 1, characterized in that the outlet of the diffusion cylinder (1) is rectangular or elliptical; comprises a rectangle or an ellipse with constant transverse width and increased longitudinal height; or square; or an oval or domed rectangular outlet.
6. A parallel high-efficiency axial flow fan with a partition in a rectangular outlet diffuser according to claim 1, characterized in that the support bracket (5) is a straight plate lap joint structure.
7. A parallel high-efficiency axial flow fan with baffles in a rectangular outlet diffuser according to claim 1, wherein the support bracket (5) is of a flat oval structure with a cross section similar to that of a wing.
8. A parallel high-efficiency axial-flow fan with a baffle in a rectangular outlet diffusion cylinder according to claim 1, characterized in that the two ends of the upper and lower surfaces of the support bracket 5 are formed by welding.
9. A parallel high efficiency axial flow fan with baffle in the rectangular outlet diffuser according to claim 1, characterized in that the inlet of the diffuser (1) is round and the outlet is rectangular.
CN202110991178.7A 2021-08-26 2021-08-26 Parallel type efficient axial flow fan with partition plates arranged in rectangular outlet diffusion cylinder Active CN113623249B (en)

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Publication number Priority date Publication date Assignee Title
EP4283114A1 (en) * 2022-05-26 2023-11-29 Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie Wind turbine with horizontal rotation axis of a rotor

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CN209523897U (en) * 2018-08-24 2019-10-22 江西增鑫科技股份有限公司 A kind of belt wheel blower
CN112610530A (en) * 2021-01-07 2021-04-06 泛仕达机电股份有限公司 Axial flow fan of distortion diffuser and applied this diffuser
CN112703350A (en) * 2018-09-14 2021-04-23 三星电子株式会社 Outdoor unit of air conditioner

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Publication number Priority date Publication date Assignee Title
JP2003021099A (en) * 2001-07-03 2003-01-24 Mitsubishi Heavy Ind Ltd Diffuser
CN104302927A (en) * 2012-02-17 2015-01-21 施乐百欧洲公司 Diffusor, ventilator having such a diffusor, and device having such ventilators
EP2716916A2 (en) * 2012-10-05 2014-04-09 Ziehl-Abegg AG Ventilator unit
US20160281739A1 (en) * 2013-12-02 2016-09-29 Samsung Electronics Co., Ltd. Blower and outdoor unit of air conditioner comprising same
JP2015108316A (en) * 2013-12-04 2015-06-11 パナソニックＩｐマネジメント株式会社 Blower and outdoor unit mounting blower
CN104712588A (en) * 2015-01-27 2015-06-17 中国矿业大学(北京) Novel mine axial flow ventilation diffuser
US20190242405A1 (en) * 2018-02-02 2019-08-08 Novenco Building & Industry A/S Blower and a blower diffuser
CN209523897U (en) * 2018-08-24 2019-10-22 江西增鑫科技股份有限公司 A kind of belt wheel blower
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CN112610530A (en) * 2021-01-07 2021-04-06 泛仕达机电股份有限公司 Axial flow fan of distortion diffuser and applied this diffuser

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4283114A1 (en) * 2022-05-26 2023-11-29 Akademia Gorniczo-Hutnicza im. Stanislawa Staszica w Krakowie Wind turbine with horizontal rotation axis of a rotor

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