CN110685958A - Fan cover - Google Patents

Fan cover Download PDF

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Publication number
CN110685958A
CN110685958A CN201911114528.0A CN201911114528A CN110685958A CN 110685958 A CN110685958 A CN 110685958A CN 201911114528 A CN201911114528 A CN 201911114528A CN 110685958 A CN110685958 A CN 110685958A
Authority
CN
China
Prior art keywords
base
inner ring
guide vanes
ring
fan
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
CN201911114528.0A
Other languages
Chinese (zh)
Inventor
蒋剑
陈岩
王欢
王宇峰
黄青宇
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.)
Suzhou Railway Locomotive Polytron Technologies Inc
Original Assignee
Suzhou Railway Locomotive Polytron Technologies Inc
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 Suzhou Railway Locomotive Polytron Technologies Inc filed Critical Suzhou Railway Locomotive Polytron Technologies Inc
Priority to CN201911114528.0A priority Critical patent/CN110685958A/en
Publication of CN110685958A publication Critical patent/CN110685958A/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
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted 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
    • 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
    • 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
    • F04D29/52—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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of 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
    • F04D29/66—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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a fan cover of a fan, and relates to the technical field of fans. The disc-shaped base is disc-shaped, an inner ring is arranged above the base, an outer ring is arranged above the inner ring, and the axes of the base, the inner ring and the outer ring are overlapped; the inner guide vanes are fixedly connected to the inner ring and the base part, and the outer guide vanes are fixedly connected to the outer ring and the inner ring; a groove is formed in the lower end face of the base and used for placing a PCB; the PCB is characterized by also comprising a heat dissipation rear cover, wherein the heat dissipation rear cover is fixedly connected to the lower end face of the base part and is used for covering the PCB; the base, the inner ring, the outer ring, the inner guide vane and the outer guide vane are integrally formed and made of aluminum materials; the heat dissipation rear cover is made of aluminum material. The fan cover of the fan is integrally formed, is made of aluminum, can accommodate the motor and the fan at the same time, and has simple structure and high strength.

Description

Fan cover
Technical Field
The invention relates to the technical field of fans, in particular to a fan cover of a fan.
Background
In current intelligent cooling engine system, cooling blower is an important component part, comprises parts such as flabellum, fan cover, motor, and wherein the motor drives the flabellum through the motor shaft and bloies the heat dissipation, and the fan cover is used for protecting motor and fan, prevents that debris from getting into, still is used for the wind-guiding simultaneously, helps the fan cooling.
Chinese utility model publication No. CN202867306U, "engine cooling fan cover and engine fan" provides a molded engine cooling fan cover, which includes: a body; a backup ring formed in the body; a motor mounting portion supported via spokes within the spider; and at least three mounting supports, each mounting support having a lug and a recessed connection portion connected to the body, wherein a channel-shaped reinforcing rib is formed on the connection portion of the mounting support, the notch of the channel-shaped reinforcing rib facing opposite to the notch of the connection portion of the mounting support. The utility model also relates to an engine fan, which comprises fan blades; a motor and a fan housing as described above. According to this utility model, can show the manufacturing cost who reduces engine cooling fan cover and further improve the intensity of engine cooling fan cover itself.
The Chinese invention with the publication number of CN105697123B provides an integrated fan cover reinforcing plate, which is used for being fixed on a fan cover body and is integrally formed, and the integrated fan cover reinforcing plate adopts an integrated fan cover reinforcing plate structure and is used for the fan cover body, so that the integral strength of a fan cover assembly can be increased, the integral structure of the fan cover assembly is simpler, the arrangement is compact, the appearance is better, welding stations are reduced in the manufacturing process, the process is simplified, and the working efficiency is improved; the split type reinforcing structure in the prior art is avoided, the integrity and the compactness are better, and the problem caused by the independent action of each reinforcing plate is improved.
The two patents improve the structure of the fan cover, enhance the strength of the fan cover, reduce the cost and the like.
In the existing fan cover of the fan, because the temperature of the working environment is higher, a clearance of about 3mm is often arranged between the fan cover and the outer ring of the fan blade. The presence of the gap means, under equivalent mounting conditions, a reduction in the diameter of the blade with a consequent reduction in the operating efficiency of the blade, which is not improved by either of the above-mentioned patents.
Disclosure of Invention
The invention aims to provide a fan cover which is integrally formed, is made of aluminum, contains a motor and a fan, reduces the distance between the fan cover and the outer ring of a fan blade, has a simple structure and is high in strength.
In order to solve the problems, the technical scheme of the invention is as follows:
a fan cover comprises a base, wherein the base is in a disc shape, an inner ring is arranged above the base, an outer ring is arranged above the inner ring, the axes of the base, the inner ring and the outer ring are coincident, the diameter of the base is smaller than that of the inner ring, and the diameter of the inner ring is smaller than that of the outer ring;
the inner guide vanes are fixedly connected between the inner ring and the base, the outer guide vanes are fixedly connected between the outer ring and the inner ring, the included angle between the orthographic projection of the upper end surface of the base of the inner guide vanes and the straight line formed by the circle center of the upper end surface of the base and the joint of the inner guide vanes and the base is 0-30 degrees, the included angle between the orthographic projection of the upper end surface of the base of the outer guide vanes and the straight line formed by the circle center of the upper end surface of the base and the joint of the outer guide vanes and the inner ring is 0-30 degrees, and the root installation angle of the outer guide vanes is 45-70 degrees;
a groove is formed in the lower end face of the base and used for placing a PCB;
the PCB is characterized by also comprising a heat dissipation rear cover, wherein the heat dissipation rear cover is fixedly connected to the lower end face of the base part and is used for covering the PCB;
the base, the inner ring, the outer ring, the inner guide vane and the outer guide vane are integrally formed and made of aluminum materials;
the heat dissipation rear cover is made of aluminum material.
Further, the upper end face of the base is provided with a motor groove, and the motor groove is used for accommodating a motor.
Further, a spigot extends out of the side wall of the motor groove along the axis direction.
Further, the inner guide vane is fixedly connected to the upper portion of the outer side wall of the base portion and the inner wall of the inner ring.
Further, the outer guide vane is fixedly connected to the outer wall of the base inner ring and the inner wall of the outer ring.
Further, the inner guide vanes are uniformly arranged along the circumferential direction of the inner ring.
Further, the number of the inner guide vanes is 24.
Further, the outer guide vanes are uniformly arranged along the circumferential direction of the outer ring.
Further, the number of the outer guide vanes is set to 8.
Further, the outer ring is higher than the inner ring in the axial direction.
Compared with the prior art, the invention has the following beneficial effects:
1. the upper end surface of the base part of the fan cover is provided with a motor groove for placing a motor, the motor is connected with fan blades, the fan cover simultaneously protects the motor and the fan blades, impurities are prevented from entering the fan cover, and the fan cover has a wind guiding function;
2. the base part, the inner ring, the outer ring, the inner guide vane and the outer guide vane are integrally formed, so that the structure is simple and the strength is high;
3. the base part, the inner ring, the outer ring, the inner guide vane and the outer guide vane are made of aluminum materials, compared with materials such as plastics, the fan cover is not easy to deform due to the fact that the aluminum materials work under a high-temperature condition, a gap between the outer ring of the fan blade and the fan cover is set to be 2mm, and the reduction of the gap means that the diameter of the fan blade can be enlarged under the same installation condition, so that the efficiency of the fan blade is improved, the rotating speed of the fan blade can be reduced under the same air quantity, the noise is reduced, and the overall thickness of;
4. the invention protects the motor and the fan blades simultaneously by arranging the inner ring, the outer ring, the inner guide vane and the outer guide vane, prevents sundries from entering and has a wind guide function;
5. the lower end face of the base part is provided with the groove, and the groove is used for placing the PCB, so that the installation space of the PCB is saved;
6. according to the invention, the side wall of the motor groove extends out of the spigot along the axis direction, and the spigot is higher than the upper end surface of the base part, so that the motor can be better fixed;
7. the mounting angle of the root part of the outer guide vane is 45-70 degrees, and the mounting angle is matched with the fan blades, so that the noise is reduced, and the efficiency of the fan is improved;
8. the included angle between the inner guide vane and the outer guide vane is 0-30 degrees, so that the wind direction is met, and the heat dissipation efficiency is improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic bottom perspective view of the present invention;
FIG. 3 is a schematic perspective view in elevation of the present invention;
FIG. 4 is a schematic top perspective view of the present invention;
FIG. 5 is a perspective view of the present invention and a fan blade of an electric motor;
FIG. 6 is a schematic bottom view of a motor blade in accordance with the present invention;
FIG. 7 is a schematic perspective view of the present invention and a fan blade of an electric motor;
FIG. 8 is a perspective exploded view of the fan blade of the present invention;
wherein 1 is a basal part; 2 is an inner ring; 3 is an outer ring; 4 is an inner guide vane; 5 is an outer guide vane; 6 is a heat dissipation rear cover; 7 is a motor; and 8 is a fan blade.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easy to understand, the invention is further described with reference to the specific drawings.
Example (b):
1-8, the fan cover comprises a base 1, wherein the base 1 is in a disc shape, an inner ring 2 is arranged above the base 1, an outer ring 3 is arranged above the inner ring 2, and the axes of the base 1, the inner ring 2 and the outer ring 3 are coincident; the diameter of the base 1 is smaller than the diameter of the inner ring 2, and the diameter of the inner ring 2 is smaller than the diameter of the outer ring 3. The outer ring 3 is axially higher than the inner ring 2.
The inner guide vanes 4 are multiple, the outer guide vanes 5 are multiple, the inner guide vanes 4 are fixedly connected between the inner ring 2 and the base 1, and the outer guide vanes 5 are fixedly connected between the outer ring 3 and the inner ring 2; the included angle between the orthographic projection of the inner guide vane 4 on the upper end face of the base 1 and the straight line formed by the circle center of the upper end face of the base 1 and the joint of the inner guide vane 4 and the base 1 is 0-30 degrees, the orthographic projection of the outer guide vane 5 on the upper end face of the base 1 and the included angle between the circle center of the upper end face of the base 1 and the straight line formed by the joint of the outer guide vane 5 and the inner ring 2 are 0-30 degrees, and the installation angle of the root of the outer guide vane 5 is 45-70 degrees. The inner guide vane 4 is fixedly connected to the upper part of the outer side wall of the base part 1 and the inner wall of the inner ring 2. The outer guide vane 5 is fixedly connected to the outer wall of the base inner ring 2 and the inner wall of the outer ring 3. The inner guide vanes 4 are uniformly arranged along the circumferential direction of the inner ring 2. The outer guide vanes 5 are uniformly arranged along the circumferential direction of the outer ring 3. The number of the inner guide vanes 4 is 24. The number of the outer guide vanes 5 is 8.
A groove is formed in the lower end face of the base 1 and used for placing a PCB;
the PCB heat dissipation structure is characterized by further comprising a heat dissipation rear cover 6, wherein the heat dissipation rear cover 6 is fixedly connected to the lower end face of the base portion 1, and the heat dissipation rear cover 6 is used for covering the PCB;
the base part 1, the inner ring 2, the outer ring 3, the inner guide vane 4 and the outer guide vane 5 are integrally formed and made of aluminum materials;
the heat dissipation rear cover 6 is made of an aluminum material.
The upper end face of the base part 1 is provided with a motor 7 groove, and the motor 7 groove is used for accommodating a motor 7. And a spigot extends out of the side wall of the groove of the motor 7 along the axis direction. The spigot is higher than the upper end surface of the base part 1, so that the motor 7 can be better fixed.
The upper portion of the motor 7 is fixedly connected with a fan blade 8, the fan blade 8 comprises a fan blade 8 outer ring, the lower portion of the fan blade 8 outer ring is arranged in the outer ring 3, and the gap between the lower portion of the fan blade 8 outer ring and the outer ring 3 is set to be 2mm-2.5 mm.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The fan cover is characterized by comprising a base part, wherein the base part is disc-shaped, an inner ring is arranged above the base part, an outer ring is arranged above the inner ring, the axes of the base part, the inner ring and the outer ring are overlapped, the diameter of the base part is smaller than that of the inner ring, and the diameter of the inner ring is smaller than that of the outer ring;
the inner guide vanes are fixedly connected between the inner ring and the base, the outer guide vanes are fixedly connected between the outer ring and the inner ring, the included angle between the orthographic projection of the upper end surface of the base of the inner guide vanes and the straight line formed by the circle center of the upper end surface of the base and the joint of the inner guide vanes and the base is 0-30 degrees, the included angle between the orthographic projection of the upper end surface of the base of the outer guide vanes and the straight line formed by the circle center of the upper end surface of the base and the joint of the outer guide vanes and the inner ring is 0-30 degrees, and the root installation angle of the outer guide vanes is 45-70 degrees;
a groove is formed in the lower end face of the base and used for placing a PCB;
the PCB is characterized by also comprising a heat dissipation rear cover, wherein the heat dissipation rear cover is fixedly connected to the lower end face of the base part and is used for covering the PCB;
the base, the inner ring, the outer ring, the inner guide vane and the outer guide vane are integrally formed and made of aluminum materials;
the heat dissipation rear cover is made of aluminum material.
2. The fan cover according to claim 1, wherein the upper end surface of the base is provided with a motor groove for accommodating a motor.
3. The fan cover according to claim 2, wherein the motor groove sidewall extends out of the spigot along the axial direction.
4. The fan shroud of claim 1, wherein the inner guide vanes are fixedly attached to the upper portion of the outer sidewall of the base and to the inner wall of the inner ring.
5. The fan shroud of claim 1, wherein the outer guide vanes are fixedly attached to the outer wall of the inner ring and the inner wall of the outer ring of the base.
6. The fan shroud of claim 1, wherein the inner guide vanes are uniformly arranged along the circumferential direction of the inner ring.
7. The fan shroud of claim 6, wherein the number of inner guide vanes is 24.
8. The fan shroud of claim 1, wherein the outer guide vanes are uniformly arranged along the circumferential direction of the outer ring.
9. The fan shroud of claim 8, wherein the number of outer guide vanes is 8.
10. The fan shroud of claim 1, wherein the outer ring is axially higher than the inner ring.
CN201911114528.0A 2019-11-14 2019-11-14 Fan cover Pending CN110685958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911114528.0A CN110685958A (en) 2019-11-14 2019-11-14 Fan cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911114528.0A CN110685958A (en) 2019-11-14 2019-11-14 Fan cover

Publications (1)

Publication Number Publication Date
CN110685958A true CN110685958A (en) 2020-01-14

Family

ID=69116821

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911114528.0A Pending CN110685958A (en) 2019-11-14 2019-11-14 Fan cover

Country Status (1)

Country Link
CN (1) CN110685958A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024074176A1 (en) * 2022-10-06 2024-04-11 Ziehl-Abegg Se Outlet guide vane device for a ventilator, and ventilator comprising an outlet guide vane device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024074176A1 (en) * 2022-10-06 2024-04-11 Ziehl-Abegg Se Outlet guide vane device for a ventilator, and ventilator comprising an outlet guide vane device

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