CN209990698U - Fan blade assembly, power fan unit body thereof and bladeless fan lamp system - Google Patents
Fan blade assembly, power fan unit body thereof and bladeless fan lamp system Download PDFInfo
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- CN209990698U CN209990698U CN201920598557.8U CN201920598557U CN209990698U CN 209990698 U CN209990698 U CN 209990698U CN 201920598557 U CN201920598557 U CN 201920598557U CN 209990698 U CN209990698 U CN 209990698U
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Abstract
A fan blade component, a power fan unit body and a bladeless fan lamp system thereof,including blade base and a plurality of blade, it is a plurality of the blade is circumference formula evenly distributed and is in on the blade base, the apex of blade with the contained angle of blade base the central axis
Is 33.5 degrees ~ 37.3.3 degrees, and the included angle between the blade root of the blade and the central axis of the blade base
The angle is 52 degrees ~ 58 degrees, by improving the blade root installation angle and the blade tip installation angle of the blade on the blade base, under the condition of equal size and equal power input, compared with the traditional fan blade shape design, the blade shape design has the characteristics of small volume, light weight, high efficiency and large ventilation quantity at the blade position, so that the fan blade component can be widely used in ventilation equipment such as a power fan unit body, a bladeless fan lamp system and the like.
Description
Technical Field
The utility model relates to a fan leaf subassembly especially relates to a fan leaf subassembly and power fan unit body and bladeless fan lamp system thereof.
Background
The fan is still the core component of the existing ventilation equipment, has the advantages of simple structure, convenient processing, low cost and the like, and is widely applied in various fields. The quality of the fan blade design is directly related to the efficiency, energy consumption, noise, and even performance indexes such as volume and weight of the fan; therefore, the fan blade design becomes one of the key factors for determining the performance of the fan.
The fan blade profile on the market at present usually adopts the traditional design method, namely basically does not change too much in the radial direction of the blade, and does not have special front fairing and exhaust structure. The fan efficiency of this structure is low, and in order to increase the air volume, a method of increasing the area of the blades is generally used. However, as the area of the blades is increased, the size of the fan is increased, and the volume and the weight of the fan are increased, so that the size of the ventilation equipment is also increased, and the miniaturization and the individuation of the ventilation equipment are limited.
If the size is reduced and the efficiency is improved while the performance of the fan is ensured, such as on the premise of ensuring the air volume, the defects of the traditional fan can be greatly improved, and the change of products in related industries can be subversive.
Therefore, a new technical solution should be provided to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fan blade subassembly aims at solving the amount of wind for increase ventilation equipment among the prior art, can only be through the technical problem that can realize behind increase fan blade area and the fan size.
Another object of the utility model is to provide an utilize power fan unit body and bladeless fan lamp system of this fan leaf subassembly, make power fan unit body have compact structure, small, efficient and the big characteristics of amount of wind to make bladeless fan lamp system compact structure, the air-out is efficient, and gas flow is big.
The technical scheme of the utility model as follows:
the fan blade assembly comprises a blade base and a plurality of blades, wherein the blades are uniformly distributed on the blade base in a circumferential mode, and the tips of the blades and the central axis of the blade base form an included angle
Is 33.5 degrees ~ 37.3.3 degrees, and the included angle between the blade root of the blade and the central axis of the blade base
At 52 deg. ~ 58 deg..
The fan blade assembly is characterized in that the chord length of the blade tip section blade profile is a preset value a, the maximum thickness of the blade tip section blade profile is a preset value b, the chord length of the blade root section blade profile of the blade is a preset value c, the maximum thickness of the blade root section blade profile is a preset value d, a is smaller than c, and b is smaller than d.
The fan blade component is characterized in that the blade tip of the blade is in a backswept shape.
The fan blade assembly, wherein the tip of the blade and the central axis of the blade base form an included angle
Is 35 deg..
The fan blade assembly, wherein the blade root of the blade forms an included angle with the central axis of the blade base
Is 55 degrees.
The fan blade assembly is characterized in that the number of the blades is 10 ~ 15.
The fan blade assembly further comprises a front fairing, and the front fairing is connected to the blade base.
The utility model provides a power fan unit body, wherein, includes fan blade subassembly, still include fan machine casket, driving motor and mount pad, the fan machine casket is the pipeline structure, driving motor passes through the mount pad is installed in the fan machine casket, the blade pedestal connection is in on driving motor's the power take-off shaft.
A bladeless fan lamp system comprises a power fan unit body, a control component, a lamp shell and an LED lamp source, wherein the power fan unit body and the LED lamp source are both arranged in the lamp shell; the power fan unit is used for sucking air outside the lamp housing into the lamp housing and enabling the air to be ejected out of the air outlet in a downward direction at a high speed, so that the air around the lamp housing flows to high-speed jet flow.
The utility model has the advantages that: the utility model discloses a fan blade subassembly, through improving blade root erection angle and apex erection angle of blade on the blade base, then under the condition of equal size, equal electronic rate input, make this profile design compare in traditional fan profile design, have characteristics small, light in weight, efficient, the blade department circulates the amount of wind big, make this fan blade subassembly can extensively be arranged in various ventilation equipment, make ventilation equipment simple structure, small, light in weight and amount of wind big.
Drawings
Fig. 1 is a schematic perspective view of a fan blade assembly according to the present invention.
Fig. 2 is a schematic diagram of the structure of the middle blade of the present invention.
Fig. 3 is the cross-sectional structure view of the middle power fan unit body of the utility model.
Fig. 4 is a three-dimensional structure diagram of the unit body of the medium power fan.
Fig. 5 is a three-dimensional rear view structure diagram of the unit body of the medium power fan.
Reference numbers in the figures: 1. a blade base; 2. a blade; 3. a fan case; 4. a drive motor; 41. a power take-off shaft; 5. a mounting seat; 6. an intake cowl; 7. a sheet-shaped connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.
The utility model provides a solve above-mentioned problem, provide a fan blade subassembly, as shown in fig. 1, including blade base 1 and a plurality of blade 2, a plurality of these blades 2 are circumference formula evenly distributed on this blade base 1, still include preceding radome fairing (not drawn in the picture), and this preceding radome fairing is connected on this blade base 1, and preceding radome fairing simple structure plays the rectification effect to the influent air (the radome fairing is prior art, and this paper is no longer repeated. The outer contour of the blade base 1 is generally circular. The utility model discloses be different from ventilation blower's design method usually, based on the thought that aeroengine pursue the design of the big amount of wind fan of high efficiency, provide a brand-new fan blade subassembly design scheme. According to the design method of the fan blade assembly, the blade profile torsion angle matched according to different rotating speeds of the blade tip and the blade heel of the fan can be given by optimizing the air volume, the efficiency and the power consumption of the fan according to the actual air volume requirement and the isentropic flow characteristic, specifically, as shown in fig. 2, in the embodiment, the included angle between the blade tip of the blade 2 and the central axis of the blade base 1(i.e., the tip installation angle) is 33.5 degrees ~ 37.3.3 degrees, and the included angle between the root of the blade 2 and the central axis of the blade base 1
The fan blade assembly has the advantages that the fan blade assembly has the advantages of being small in size, light in weight, high in efficiency and high in ventilation volume at the position of the blade 2, and the fan blade assembly can be widely applied to various ventilation equipment because the fan blade assembly is designed in a backswept mode from the middle of the blade to the tip of the blade 2 (commonly called as the tip of the blade, common knowledge of the skilled person in the art and not repeated in detail) in the embodiment.
In the embodiment, the chord length of the blade tip section blade profile is a preset value a, the maximum thickness of the blade tip section blade profile is a preset value b (not shown in the figure), the chord length of the blade root section blade profile of the blade 2 is a preset value c, the maximum thickness of the blade root section blade profile is a preset value d (not shown in the figure), a is smaller than c, b is smaller than d, and the section between the blade tip and the blade root is between the blade tip and the blade root.
Those skilled in the art also provide support materials for deriving optimal fan blade profile mounting angles:
1. theoretical calculation of fan blade section model selection:
S=
=3061.5
=3.061
V=4
/min=
/s=
/s
in the above formulas, S is the fan flow area in unit
(ii) a D is the diameter, m, V is the air flow (i.e., air volume), unit
/s；vIs the air flow velocity in m/s;refers to the circumferential angular velocity, and R is the radius. Wherein the subscripts "SHROUD" and "HUB" refer to the blade tip and blade root, respectively, the subscript "exhaust" refers to the speed of exhaust from the fan, the subscript "circumferential" refers to the fan blade tip in the circumferential direction, and the subscript "absolute" refers to the absolute value of the airflow. To sum up this structure and based on above-mentioned calculated result, the utility model provides a blade 2 adopts the extremely low speed wing section, and the lectotype specification is goe496 wing section in the trade.
2. Angle of attack selection and optimization
Initial selection of an attack angle: 10 at the root (hub) and 7 at the tip (shroud); so that the mounting angles of the blade root and the blade tip under the zero attack angle can be calculated as
Wherein the content of the first and second substances,
is the mounting angle of the blade tip at zero attack angle,
is the mounting angle of the blade root at zero angle of attack; the other variables are as above. After initial iteration, the mounting angles of the blade tip and the blade root are respectively 31 degrees and 52 degrees.
After optimizing, iterating and continuously adjusting the results of the blade tips and the blade roots and considering the coupling effect between the installation angles and the sweepback for a plurality of times, the reasonable installation angle range is finally obtained as follows:
blade tip installation angle
33.5 degrees ~ 37.3.3 degrees, and 35 degrees is selected in the patent.
Root setting angle
52 degrees ~ 58 degrees, while 55 degrees is used in the patent.
By the blade profile design, the fan efficiency can be improved by at least 5% under the condition of equal size and equal electric power input; or, under the condition of the same size and power input, the air quantity of the new-structure fan can be increased by at least 5% compared with that of the traditional power fan.
As shown in fig. 3, fig. 4 and fig. 5, the utility model also discloses a power fan unit body, this power fan unit body has included this fan blade subassembly, still includes fan machine casket 3, driving motor 4 and mount pad 5, and this fan machine casket 3 is the pipeline structure, and this driving motor 4 is installed in this fan machine casket 3 through this mount pad 5, and this blade base 1 is connected on this driving motor 4's power output shaft 41. In this embodiment, 3 port departments of fan case still are connected with the radome fairing 6 that admits air, this radome fairing 6 that admits air is the tubular structure, the air inlet radome fairing adopts aeroengine intake duct design theory, the radome fairing 6 and the fan case 3 that admits air adopt interference fit to connect, 6 lips of radome fairing that admits air shrink gradually (similar to the horn mouth form, as shown in the figure) for reduce the air flow loss that probably appears in 3 interior and the blade 2 departments of fan case, thereby the efficiency of air inflow has been improved, be favorable to the improvement of power fan unit body property ability. As the power unit body, can provide power for various ventilation equipment. Compared with the traditional fan, the unit body of the power fan has the characteristics of small volume, light weight, high efficiency and large air quantity because the fan blade type designed by the design idea of the aero-engine fan blade 2 is adopted under the condition of the same air quantity; the unit body design is adopted, the installation and the disassembly are simple, convenient and quick, and the plug and play is realized; the whole size of the power fan can be greatly reduced, and the power fan unit body can be adopted to ensure that the equipment has smaller volume, more compact structure and lighter weight. The scheme has the characteristics of simple design, convenience in installation, safety, reliability, light weight, good rigidity and easiness in processing and manufacturing, and can be widely applied to various ventilation equipment.
In this embodiment, the mounting base 5 of the transmission motor 4 is suspended in the fan casing 3, and in practical use, a plurality of sheet-shaped connecting pieces 7 (as shown in fig. 5) can be connected around the mounting base 5 to fixedly connect the mounting base 5 with the inner wall of the fan casing 3, and allow air to flow inside and outside the fan casing 3 without resistance.
The above structure uses a detailed process: air enters the fan case 3 from the air inlet fairing 6, and after flowing through the fan blades 2, the air pressure is increased, then flows through the sheet connecting piece 7 (used for fixing the transmission motor 4 and the fan case 3) behind the fan blades 2, and finally is discharged. The sheet connecting piece 7 is arranged behind the fan blade 2, and has the functions of fixing and supporting as well as noise reduction.
In this embodiment, the driving motor 4 is a brushless dc motor, and this type of motor has the advantages of small size, light weight, high power density, simple structure, and the like, and can be adapted to a fan according to actual requirements. The adaptive design means that the outer diameter of the motor is less than or equal to the inner diameter of the fan blade base 1 as far as possible, so that the axial distance between the fan blade base 1 and the blades 2 thereon and the transmission motor 4 is as short as possible, and the power fan unit body is more compact in overall structure, small in size and light in weight.
The utility model also discloses a bladeless fan lamp system (not shown in the figure), including above-mentioned power fan unit body, still include control assembly, lamp body and LED lamp source, this power fan unit body and this LED lamp source are all installed in this lamp body, this LED lamp source and this driving motor 4 all with this control assembly (this control system has the function such as start, stop, change driving motor 4 rotational speed), be provided with air intake and air outlet on this lamp body, this air intake sets up in this lamp body bottom, this air outlet is seted up on this lamp body border and is extended along this lamp body border (this air outlet is the annular setting on the lamp body, the people looks like and is the slot shape); the power fan unit is used for sucking air outside the lamp shell into the lamp shell and jetting the air from the air outlet to the downward direction at a high speed, so that the air around the lamp shell flows to high-speed jet flow.
In practical application, the lamp shell is connected with a stand column, and the stand column can be used for installing and connecting the lamp shell on a wall surface to form a common household hanging lamp form. The upright post is of a hollow structure, the power fan unit bodies are installed in the upright post, air is ejected from narrow slits (namely air outlets) which are annularly distributed on the lamp shell, and the static pressure of high-speed airflow is low relative to the static pressure of peripheral air according to Bernoulli equation, so that the peripheral air flows to high-speed jet flow, and the effect of flow multiplication is achieved (the multiple of flow increase is related to the jet flow speed).
In a further embodiment, a filter material may be disposed at the air inlet for filtering impurities in the air and then spraying the filtered air to the outside of the lamp housing.
The utility model discloses a bladeless fan lamp system is different from traditional bladeless fan lamp configuration, adopts the modularized design theory, develops power fan module, draws the principle to develop multiplication airflow channel design, combines low energy consumption, high efficiency LED lamp source and control system according to the efflux, provides a bladeless fan lamp system's new scheme. The whole system is not provided with a rotary part, a jet injection air passage and an LED lamp which are integrally designed, and the power fan unit body is plug and play, safe, reliable, fashionable, attractive, compact in structure and low in cost. The modularized design is adopted, the unit body of the power fan is designed based on the design idea of an aircraft engine fan, the bladeless air channel is designed according to the jet injection principle, and the brushless direct current motor is adopted for power, so that the power fan has the characteristics of safety, reliability, small volume, light weight, high efficiency, low power consumption, convenience in installation and the like.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. The fan blade component is characterized by comprising a blade base and a plurality of blades, wherein the blades are uniformly distributed on the blade base in a circumferential mode, and the included angles between the blade tips of the blades and the central axis of the blade base
At 33.5 deg. ~ 37.3.3 deg., and the root of the bladeThe included angle of the central axis of the blade baseAt 52 deg. ~ 58 deg..
2. The fan blade assembly of claim 1, wherein the chord length of the tip section blade profile is a predetermined value a, the maximum thickness of the tip section blade profile is a predetermined value b, the chord length of the root section blade profile of the blade is a predetermined value c, the maximum thickness of the root section blade profile is a predetermined value d, a is less than c, and b is less than d.
3. The fan blade assembly of claim 1 wherein said blades are swept back at their tips.
4. The fan blade assembly of claim 1 wherein the tip of said blade is angled with respect to the central axis of said blade base
Is 35 deg..
5. The fan blade assembly of claim 1 wherein said blade root is angled from said blade base center axis
Is 55 degrees.
6. The fan blade assembly of claim 1 wherein said number of blades is 10 ~ 15.
7. The fan blade assembly of claim 1 further comprising a forward fairing, said forward fairing attached to said blade base.
8. A power fan unit comprising the fan blade assembly of any one of claims 1 ~ 7, further comprising a fan case, a drive motor, and a mounting base, wherein the fan case is of a duct construction, the drive motor is mounted in the fan case via the mounting base, and the blade base is connected to a power take-off shaft of the drive motor.
9. A bladeless fan lamp system, comprising the power fan unit body as claimed in claim 8, and further comprising a control component, a lamp housing and an LED light source, wherein the power fan unit body and the LED light source are both mounted in the lamp housing, the LED light source and the driving motor are both electrically connected to the control component, the lamp housing is provided with an air inlet and an air outlet, the air inlet is disposed at the bottom of the lamp housing, and the air outlet is disposed on the edge of the lamp housing and extends along the edge of the lamp housing; the power fan unit is used for sucking air outside the lamp housing into the lamp housing and enabling the air to be ejected out of the air outlet in a downward direction at a high speed, so that the air around the lamp housing flows to high-speed jet flow.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989939A (en) * | 2019-04-28 | 2019-07-09 | 佛山市清源科技有限公司 | A kind of fan leaf component and its driven fan cell cube and bladeless fan lamp system |
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2019
- 2019-04-28 CN CN201920598557.8U patent/CN209990698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989939A (en) * | 2019-04-28 | 2019-07-09 | 佛山市清源科技有限公司 | A kind of fan leaf component and its driven fan cell cube and bladeless fan lamp system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A fan blade component and its power fan unit and a bladeless fan light system Effective date of registration: 20230815 Granted publication date: 20200124 Pledgee: Bank of China Limited Foshan Nanhai Sub branch Pledgor: Foshan Qingyuan Technology Co.,Ltd. Registration number: Y2023980052212 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |