CN113357177A - High-efficiency energy-saving fan - Google Patents

High-efficiency energy-saving fan Download PDF

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Publication number
CN113357177A
CN113357177A CN202110779176.1A CN202110779176A CN113357177A CN 113357177 A CN113357177 A CN 113357177A CN 202110779176 A CN202110779176 A CN 202110779176A CN 113357177 A CN113357177 A CN 113357177A
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CN
China
Prior art keywords
fan
cover
fan blade
air
hollow shaft
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
CN202110779176.1A
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Chinese (zh)
Inventor
张会珍
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202110779176.1A priority Critical patent/CN113357177A/en
Publication of CN113357177A publication Critical patent/CN113357177A/en
Pending legal-status Critical Current

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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
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/163—Combinations of two or more pumps ; Producing two or more separate gas flows driven by a common gearing arrangement
    • 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
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • 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
    • F04D29/522—Casings; Connections of working fluid for axial pumps 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
    • 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
    • F04D29/547—Ducts having a special shape in order to influence fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
    • 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

Abstract

The invention relates to a high-efficiency energy-saving fan which comprises a shell, an induced draft cover, an air outlet cover, an air inlet cover, a motor, a hollow shaft, a solid shaft, a turbine, a first fan blade and a second fan blade, wherein the induced draft cover is installed at one end of the shell, the air outlet cover is installed at the other end of the shell, and the air inlet cover is installed at the air inlet end of the induced draft cover; the motor is arranged on the hollow shaft through a bearing, and meanwhile, the hollow shaft is provided with a first fan blade and is fixed with the power output end of the motor; the solid shaft is installed in the hollow shaft through a bearing, a turbine is installed at one end, close to the exhaust side of the fan, of the solid shaft, and the other end of the solid shaft penetrates through the hollow shaft and then is fixed with the second fan blade. According to the invention, the solid shaft is creatively arranged in the hollow shaft in a penetrating manner, and the kinetic energy in the air flow discharged by the first fan blade is recovered through the turbine arranged at one end of the solid shaft, so that the energy loss is reduced.

Description

High-efficiency energy-saving fan
Technical Field
The invention relates to the technical field of ventilation machinery, in particular to a high-efficiency energy-saving fan.
Background
The traditional axial flow fan has higher noise, and in order to reduce the pollution of the noise of the fan to the environment, relevant operation regulations require that silencers are respectively installed at the air inlet end and the air outlet end of the fan, and the silencers can prevent the problem of noise transmission and pollution and generate higher resistance to the flow of air. When the fan operates, negative pressure is generated between the air inlet silencer and the fan blades, the volume of air with the same mass can be expanded, the density can be reduced, and the effective mass of the air discharged when the fan operates at the same rotating speed can be reduced, namely the efficiency of the fan is reduced.
In addition, the rotation speed of the conventional axial flow fan blade is very high, so that the speed of air discharged after being pressurized by the fan blade is very high, and a large amount of kinetic energy contained in high-pressure, high-speed and high-density air flow can be wasted.
Disclosure of Invention
One of the main objects of the present invention is to overcome at least one of the drawbacks of the prior art and to provide an energy efficient fan.
In order to realize the technical scheme, the invention adopts the following technical scheme:
according to one aspect of the invention, the high-efficiency energy-saving fan comprises a shell, an induced draft cover, an air outlet cover, an air inlet cover, a motor, a hollow shaft, a solid shaft, a turbine, a first fan blade and a second fan blade, wherein the induced draft cover is installed at one end of the shell, the air outlet cover is installed at the other end of the shell, and the air inlet cover is installed at the air inlet end of the induced draft cover; the motor is arranged on the hollow shaft through a bearing, and meanwhile, the hollow shaft is provided with a first fan blade and is fixed with the power output end of the motor; the solid shaft is installed in the hollow shaft through a bearing, a turbine is installed at one end, close to the exhaust side of the fan, of the solid shaft, and the other end of the solid shaft penetrates through the hollow shaft and then is fixed with the second fan blade.
According to an embodiment of the present invention, the air draft cover is in a horn shape, an open end of the air draft cover is connected to the air inlet cover, and a closed end of the air draft cover is connected to the outer shell.
According to an embodiment of the present invention, the air intake silencer is disposed in the induced draft cover and disposed in the open end.
According to an embodiment of the present invention, the air outlet cover is in a horn shape, a closed end of the air outlet cover is connected with the outer shell, and an open end of the air outlet cover is an air outlet.
According to an embodiment of the present invention, the air outlet silencer is disposed in the air outlet cover and disposed in the open end.
According to an embodiment of the present invention, the turbine is a device that rotates when blown by wind, including but not limited to a turbine, a propeller, and a fan.
According to an embodiment of the present invention, the first blade and the second blade are a device that generates wind flow after rotating, and include, but are not limited to, a propeller, and a blade.
According to an embodiment of the present invention, the solid shaft has a length greater than that of the hollow shaft, and the solid shaft is penetratingly disposed in the hollow shaft.
According to an embodiment of the present invention, the diameter of the second fan blade is larger than the diameter of the first fan blade.
According to an embodiment of the invention, the motor is fixedly connected to the housing by means of a bracket.
According to an embodiment of the invention, the housing is cylindrical.
According to an embodiment of the present invention, the air inlet cover is arc-shaped and is fixed in butt joint with the air draft cover.
According to one embodiment of the invention, the air inlet cover is made of a mesh material, so that air can pass through and particles can be prevented from entering and impacting the fan blades; not only increased the air inlet area, still reduced air inlet resistance.
After the motor is electrified, the power output end drives the hollow shaft and the first fan blade to rotate, and the first fan blade rotates to suck air at the air inlet side and discharge the air to the air exhaust side after pressurizing. When the first fan blade sucks air, a negative pressure area is formed between the air inlet silencer and the first fan blade, the volume of the air is expanded and the density is reduced under the action of negative pressure, the air discharged after the first fan blade is pressurized is in a high-pressure, high-speed and high-density state, the high-pressure, high-speed and high-density air flow has large kinetic energy, the air flow pushes the turbine to rotate to transfer the energy to the turbine when passing through the air outlet cover, the turbine drives the second fan blade to rotate through the solid shaft after receiving the energy transferred by the high-speed and high-pressure air flow, the rotation of the second fan blade can suck external air through the air inlet cover and pressurize the external air, the external air passes through the air inlet silencer to reach the air inlet side of the first fan blade, the air pressure and the air density on the air inlet side of the first fan blade are increased, the air inlet amount of the first fan blade is increased, and the efficiency of the fan is improved.
According to the technical scheme, the invention has at least one of the following advantages and positive effects:
(1) the second fan blade is creatively arranged at the air inlet end of the first fan blade, the first fan blade is a main fan blade, the second fan blade is an auxiliary fan blade, and the second fan blade is arranged at the front end of the solid shaft. The turbine can recover kinetic energy in high-pressure high-speed high-density wind flow discharged by the first fan blade of the fan, and the second fan blade is driven to rotate by the solid shaft, so that the air supply quantity is increased for the air inlet side of the fan, the air supply pressure is increased, and the air exhaust quantity of the fan is increased.
(2) In the invention, the air inlet cover adopts an arc design, so that the ventilation area is increased; the diameter of the second fan blade is increased, so that air inlet resistance can be reduced during operation, air pressure at the air inlet end of the first fan blade is improved, the density and the quality of inlet air of the first fan blade are increased, and the air exhaust efficiency of the first fan blade of the fan during operation is improved.
(3) According to the invention, the solid shaft is creatively arranged in the hollow shaft in a penetrating manner, and the kinetic energy in the air flow discharged by the first fan blade is recovered through the turbine arranged at one end of the solid shaft, so that the energy loss is reduced.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an efficient energy-saving fan according to the present invention.
The reference numerals are explained below:
1-shell, 2-induced draft cover, 3-air outlet cover, 4-air inlet cover, 5-motor, 6-hollow shaft, 7-solid shaft,
8-turbine, 9-first fan blade, 10-second fan blade, 11-bearing, 12-air inlet silencer, 13-air outlet silencer and 14-bracket; arrows "↓" show the wind flow direction.
Detailed Description
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the efficient energy-saving fan comprises a shell 1, an induced draft cover 2, an air outlet cover 3, an air inlet cover 4, a motor 5, a hollow shaft 6, a solid shaft 7, a turbine 8, a first fan blade 9, a second fan blade 10, a bearing 11, an air inlet silencer 12, an air outlet silencer 13 and a support 14. One end of the shell 1 is provided with an induced draft cover 2, the other end of the shell is provided with an air outlet cover 3, and the air inlet end of the induced draft cover 2 is provided with an air inlet cover 4; the motor 5 is arranged on the hollow shaft 6 through a bearing 11, and meanwhile, the hollow shaft 6 is provided with a first fan blade 9 and is fixed with the power output end of the motor 5; the solid shaft 7 is installed in the hollow shaft 6 through a bearing 11, a turbine 8 is installed at one end, close to the exhaust side of the fan, of the solid shaft 7, and the other end of the solid shaft 7 penetrates through the hollow shaft 6 and then is fixed with the second fan blade 10. Further, the power output end of the motor 5 is a rotor, and the rotor is connected with the first fan blade 9, so that the motor 5 drives the first fan blade 9 to operate. The draught hood 2 is trumpet-shaped, the open end of the draught hood is connected with the air inlet hood 4, and the closed end of the draught hood is connected with the shell 1. An air inlet silencer 12 is arranged in the induced draft cover 2 and is arranged in the open end. Further, the air intake silencer 12 is arranged between the second fan blade 10 and the motor 5. The air outlet cover 3 is trumpet-shaped, the closed end of the air outlet cover is connected with the shell 1, and the open end of the air outlet cover is a fan air outlet. An air outlet silencer 13 is arranged in the air outlet cover 3 and is arranged in the open end.
In the invention, when the motor 5 is electrified, the rotor and the hollow shaft 6 of the motor drive the first fan blade 9 to rotate, when the first fan blade 9 rotates, air is sucked and pressurized from the air inlet end and then discharged to the air outlet end, the air flow direction is sucked from the outside of the fan through the air inlet cover 4 → the air induction cover 2 → the air inlet silencer 12 → the shell 1 → the first fan blade 9 is pressurized → the air outlet cover 3 → the air outlet silencer 13 to discharge, the high-pressure, high-speed and high-density air flow formed after the first fan blade 9 is pressurized flows to the air outlet cover 3 to blow the turbine 8, the turbine 8 is blown by the high-pressure and high-speed air flow to rotate at high speed, the rotation of the turbine 8 drives the second fan blade 10 to rotate through the solid shaft 4, the rotation of the second fan blade 10 generates air flow, the installation angle of the second fan blade 10 is adjusted to ensure that the direction of the generated air flow after the rotation of the second fan blade 10 is consistent with the air flow direction of the first fan blade 9, so that the rotation of the second fan blade 10 sucks air through the air inlet cover 4 and pressurizes the air and then passes through the air inlet silencer 12 to enter the first fan blade 12 The air inlet side of the first fan blade 9 raises the pressure, density and air quantity of the inlet air of the first fan blade 9, improves the air exhaust efficiency of the rotation of the first fan blade 9, reduces energy loss, and finally achieves the purpose of high efficiency and energy saving of the whole fan.
The motor, the hollow shaft, the solid shaft, the first fan blade, the second fan blade, the turbine, the shell, the air inlet cover, the air draft cover, the air outlet cover, the air inlet silencer, the air outlet silencer, the bearing and the bracket are all manufactured by adopting the existing equipment or the existing materials, and special materials, special equipment and processes are not needed.
In summary, the second fan blade is creatively arranged at the air inlet end of the first fan blade, the first fan blade is a main fan blade, the second fan blade is an auxiliary fan blade, and the second fan blade is arranged at the front end of the solid shaft. The turbine can recover kinetic energy in high-pressure high-speed high-density wind flow discharged by the first fan blade of the fan, and the second fan blade is driven to rotate by the solid shaft, so that the air supply quantity is increased for the air inlet side of the fan, the air supply pressure is increased, and the air exhaust quantity of the fan is increased.
In the invention, the air inlet cover adopts an arc design, so that the ventilation area is increased; the diameter of the second fan blade is increased, so that air inlet resistance can be reduced during operation, air pressure at the air inlet end of the first fan blade is improved, the density and the quality of inlet air of the first fan blade are increased, and the air exhaust efficiency of the first fan blade of the fan during operation is improved.
According to the invention, the solid shaft is creatively arranged in the hollow shaft in a penetrating manner, and the kinetic energy in the air flow discharged by the first fan blade is recovered through the turbine arranged at one end of the solid shaft, so that the energy loss is reduced.
It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth herein. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.

Claims (10)

1. A high-efficiency energy-saving fan is characterized by comprising a shell, an induced draft cover, an air outlet cover, an air inlet cover, a motor, a hollow shaft, a solid shaft, a turbine, a first fan blade and a second fan blade, wherein the induced draft cover is installed at one end of the shell, the air outlet cover is installed at the other end of the shell, and the air inlet cover is installed at the air inlet end of the induced draft cover; the motor is arranged on the hollow shaft through a bearing, and meanwhile, the hollow shaft is provided with a first fan blade and is fixed with the power output end of the motor; the solid shaft is installed in the hollow shaft through a bearing, a turbine is installed at one end, close to the exhaust side of the fan, of the solid shaft, and the other end of the solid shaft penetrates through the hollow shaft and then is fixed with the second fan blade.
2. The efficient and energy-saving fan as claimed in claim 1, wherein the draft housing is trumpet-shaped, and an open end of the draft housing is connected with the draft housing and a closed end of the draft housing is connected with the casing.
3. The efficient energy-saving fan as claimed in claim 2, wherein the air inducing cover is provided with an air intake silencer therein and is disposed in the open end.
4. The efficient energy-saving fan as claimed in claim 1, wherein the air outlet cover is horn-shaped, the closed end of the air outlet cover is connected with the outer shell, and the open end of the air outlet cover is an air outlet.
5. The efficient energy-saving fan as claimed in claim 4, wherein the outlet hood is provided with an outlet silencer and is arranged in the open end.
6. The fan of claim 1, wherein the turbine is a device that rotates when blown by a wind current, and includes but is not limited to a turbine, a propeller, and a fan blade.
7. The efficient and energy-saving fan as claimed in claim 1, wherein the first and second blades are a device which can generate wind flow after rotating, including but not limited to a turbine, a propeller, and a blade.
8. An efficient and energy-saving fan as claimed in claim 1, wherein the solid shaft has a length greater than that of the hollow shaft.
9. The efficient energy-saving fan as claimed in claim 1 or 7, wherein the diameter of the second fan blade is larger than that of the first fan blade.
10. The efficient energy-saving fan as claimed in claim 1 or 2, wherein the air inlet cover is arc-shaped and is fixed in butt joint with the air draft cover.
CN202110779176.1A 2021-07-09 2021-07-09 High-efficiency energy-saving fan Pending CN113357177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110779176.1A CN113357177A (en) 2021-07-09 2021-07-09 High-efficiency energy-saving fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110779176.1A CN113357177A (en) 2021-07-09 2021-07-09 High-efficiency energy-saving fan

Publications (1)

Publication Number Publication Date
CN113357177A true CN113357177A (en) 2021-09-07

Family

ID=77538894

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110779176.1A Pending CN113357177A (en) 2021-07-09 2021-07-09 High-efficiency energy-saving fan

Country Status (1)

Country Link
CN (1) CN113357177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114810638A (en) * 2022-05-09 2022-07-29 哲弗智能系统（上海）有限公司 Heat radiation fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114810638A (en) * 2022-05-09 2022-07-29 哲弗智能系统（上海）有限公司 Heat radiation fan
CN114810638B (en) * 2022-05-09 2023-10-31 哲弗智能系统（上海）有限公司 Heat dissipation fan

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