TWM241966U - An improved ventilating fan structure with centrifugal sweepback type - Google Patents

Description

M241966 V. Creation Instructions (l) [Technical Fields of the New Type] This creation is about a centrifugal sweep-type cooling fan: good. Using the creation to improve 2 fans on related cooling systems can only reduce the number of households due to dispersal. Feather wing ^., M ~ government ..., indole _ 2 = derived from the fan blade airfoil of the fan; under the supply of current voltage, this creative cooling wind; = the speed of the fan can be greatly improved. [Previous technology] In the factory ΠΠΓΐΓ generation, the various companies that manufacture computers and similar electronic F w users are striving for and researching and developing higher-speed data. In phase η, due to the high-speed processing of data, it will increase relatively. Force 2 = under the piece (such as space, volume, material, etc.), bulk electronic packaging; therefore, it is necessary to use a suitable packaging method. The heat generated is 1, and the use of a fan to dissipate the heat is the effect of the cooling fan. Various manufacturers are dissipating the reason, = better cooling effect, but in order to pursue the better cooling itself sr "to improve the cooling fan The problem of "speed, so noise" gradually emerges from problem to problem. Therefore, the source of noise is that it has been valued by consumers, and the overall cooling wind ~ the j: the design of the fan blade airfoil of the cooling fan is bad, which caused the horse ， = Spin, gas molecules will flow along the boundary curve of the fan blades away from the windward side of the fan blades, thus causing the fan blades to have an airfoil shape. The heat fan is a general fan with the effect of a conventional heat fan before it is sent. Γ Noise fan member M241966 V. Creative instructions (2) — The rear end of the wind surface will generate a turbulent area with a vortex phenomenon, which will cause noise. Due to the area 2, because the weight of each fan blade is slightly unequal, the smoothness of the assembly of the fan member will have a relative impact. 2 1 The allowable error range. When the cooling fan rotates at high speed, There will be vibration, which will cause the fans to collide with each other and generate noise. W caused between the three parts, gas molecules are driven by the cooling fan to hit the surface of the structure, gas molecules containing collision ^ ^ some noise. Zhengyi 4, classified as gas molecules hitting the components above 3 points are the main fan noise produced by gas molecules due to collision objects The unavoidable range will not produce high decibels. — When Yatani Xu Fan is listed by the commodity management departments of various plants as not exceeding the permissible range, it will also be the focus of improvement. The description is as follows: Zhuo, Therefore, the first point is based on the original cooling fan shown in Figure 1. The fan 1 includes: a shaft section, the shaft section-do not think of the map, and the fan section. The plurality of fan blades 12, when the cooling fan ϋ is moved around the shaft, the gas molecules will also be driven by the path formed by the flow of the gas molecules due to heat dissipation (not shown), as shown in Figure 2 Display, is the conventional cooling wind ;: = side view of the fan blade of the flow channel 'W and drive page 6 M241966

V. Creation description (3) Schematic diagram of the flow of air molecules. When the cooling fan 1 rotates, the medium ^ ^ aτ " ίρτ y \ will move towards the boundary of the windward surface due to the pushing of the windward surface 121 of the fan blade 12. 1 2 1 1 flow, when the air molecules are driven by the fan blades 12 to generate flow, a turbulent area 2 at the leeward side 1 2 2 of the boundary 12 will generate a vortex 5 mesh. Here, when a large aircraft (such as a Boeing 7 4 7) just flew or left the plane ^ Thereafter, the runway will be prohibited from being used by other aircraft within a few minutes, i is a small aircraft to avoid being caused by large aircraft flying or landing / =

Get involved and an accident occurs. , Crumbs " 丨 L In addition, ‘the windward surface 121 of the fan blade 12 and the boundary of the windward surface Η. The state is non-streamlined and has an acute angle. According to the aerodynamic principle, the non-streamlined state will cause resistance during rotation and the expansion of the turbulent zone 2, and the eddy current phenomenon will be more obvious. The reduction of the turbulence zone 2 and the reduction of the eddy current two / month can effectively reduce the volume of the bath sound. [New content] This creation is about a post-centrifugal improvement, the main purpose of which is to reduce d :; the fan blade wing of the fan due to the fan blade airfoil of this creation can present: = the sharp geometry of the voice problem, can As a result of Qi 2 = Holy Streamline, the reduction can be greatly reduced in the leeward; the vortex phenomenon occurs slowly leaving the surface of the fan blade, so the scope of this creative turbulence ~ zone is less. What is needed to reduce the noise decibel value [Embodiment] M241966 Five Creation Instructions (4)-As shown in Figure 3, this is the stand of this creative cooling fan. The stand-alone cooling fan is made up of 3 packs of H 31, and the shaft 31 A plurality of fan blades 32 are provided on the side of the shaft portion. When the cooling fan 3 is driven by a motor (not shown in the figure), gas molecules will also be driven by the rotation of the cooling fan 3 " It can be seen that the fan blade 32 airfoil of this creation has an arc and presents a first-class line. As shown in Figure 4, the side view of the fan blade airfoil of this creation cooling fan drives the flow of air molecules. The fan blade 32 has a windward surface 321 and a leeward surface 322, and the windward surface 321 and the leeward surface 322 are vertically symmetrical. Moreover, the windward surface 321 and the leeward surface 322 are imaginary and complete. The boundary 323 321 * and the leeward surface 3 22 each have their own outwardly protruding arcs, so that the blades 3 ^ 2 appear as a first-class line as a whole, so when the blades " When turning, 'air molecules will be easier to flow close to the surface of the fan blade 3 2 than It is not easy to diffuse outward, so the range of turbulence zone 4 can be easily reduced. The relative vortex phenomenon will no longer be obvious, so the noise decibel value generated can also be significantly reduced. The arc shape protruding outward can reduce the resistance of the air molecules to the blades 32. For example, the top of the mother car of a large truck will be installed with a first-class linear plate. The purpose is to prevent air molecules from directly hitting the sub-car and causing Excessive resistance causes waste of too much energy; and 'Because the range of turbulence zone 4 is reduced, it can also be said to be more concentrated, you can make a forward thrust on the fan blades 32, such as on each car on the racing track There are spoilers installed, the purpose is to be able to concentrate the gas molecules flowing through the car body

Page 8 M241966 V. Creative Instructions (5) ’When the gas molecules leave the car body, it can give the car body a forward thrust. It can be said that the stability of the car body integrates the above characteristics, not only the force, so the cooling fan 3 of this creation is the same as the general one, and it can increase the forward and supply the same voltage and current, and the white σ cooling fan 1 is slightly larger than The amount of wind generated by the conventional loosening operation will be scattered as shown in Fig. 5 and the wind will reach the best heat dissipation efficiency. Figure 'where the cooling fan 3 is arranged at: fan η: middle = = • an upper plate 5 and a lower frame 6,:, the fan frame includes through holes for air molecules outside the fan frame = with a plurality of Each hollow frame has an accommodation space 61, and can be equipped with 1; the lower frame body 6 6 further has two non-adjacent through holes as no, in addition, the lower frame air port 63 'and the cooling fan 3 contain Placed in this = Molecular ㈣: The motors 62 are matched with each other. Straight at. Haigu is located in the space 61, and this figure is from this figure :: U this: The combination of the embodiment of the cooling fan shows the row of the body 6 "I know it in two months because of the air inlet of the upper plate 5" and When driving, air = two fans 3 are driven by the motor 62 (as shown in FIG. 5). At this time, the air-blading eight blades are driven to rotate the cooling fan 3 and are driven by the exhaust port 63. The air will be discharged through the exhaust port 63. And when the air molecules are balanced according to the pressure, the pressure near the cooling fan 3 will drop sharply, the roots are balanced, and the principle of a. The area near the cooling fan 3 will obtain a pressure in order to obtain pressure. The molecules will pass through The intake port 51 is sucked in, and it can be said that it forms a cycle.

Page 9 M241966

The characteristics of this creation are summarized as follows: 1. Because the fan blade 32 airfoil of this creation presents a first-class linear shape, according to the principles of aerodynamics, this creation can easily reduce the range of turbulent zone 4 and the vortex phenomenon will not Obviously, it can greatly reduce the noise decibel value generated by the cooling fan 3. 2, 2. The cooling fan 3 of this creation and the conventional cooling fan 丨 Under the same voltage and current supply, the rotation speed of this creation can easily be more than the known rotation speed by 1 0 0 0 ~ 20 0 0 revolutions per minute (hereinafter referred to as the nickname rpm; rev〇luti〇ns, minute), because its static pressure value (Ps; static pressure) is directly proportional to the square value of rpm, so it can be clearly known that if the value of rpm is only a little more, its static pressure value is this A large increase, and an increase in the static pressure value can expand its heat dissipation area and effect.

3. The fan blade 3 2 airfoil of this creation is obviously larger than the conventional fan blade 1 2 airfoil. 'The relative weight is also a lot heavier. In this way, the allowable weight error of each fan blade 32 is allowed. The value can also be increased relatively, and it is less likely to exceed the tolerance range, so it can improve the stability of the mechanism itself. When rotating at high speed, it is not easy to have vibration in the axial and radial directions. When creating a mold, it is not necessary to require such precision as the mold designed in the prior art, so the cost required when designing the mold can be reduced. The creation of a centrifugal swept-type cooling fan provided by this creation improves the blade airfoil. This work not only can significantly reduce the noise value caused by the cooling fan when it is rotating, but also has the ability to easily increase the speed of the cooling fan's rotation and greatly increase the static pressure value to expand its cooling surface. M241966 V. Creation Note (7). Therefore, with the requirements for applying for a new type of patent, apply in accordance with the law. The above has described the creation in detail, but the above are only the preferred embodiments of the creation, and the scope of the implementation of the creation cannot be limited. That is, all equal changes and modifications made in accordance with the scope of this application for creation shall still be covered by the patent for this creation.

Page 11 M241966 Brief description of the diagram [Simplified illustration of the diagram] Figure 1 is a three-dimensional schematic diagram of a conventional cooling fan; Figure 2 is a side view of a fan blade of the conventional cooling fan and the intention of driving air molecules, Section 3 The figure is a three-dimensional schematic diagram of the creative cooling fan;-Figure 4 is a side view of the fan blade airfoil of the creative cooling fan and a schematic diagram that drives the flow of air molecules; Figure 5 is an exploded schematic view of the creative cooling fan embodiment; The figure is a combined schematic diagram of this creative cooling fan embodiment. [Illustration of drawing number] 1 Cooling fan 11 Shaft section 12 Fan blade 121 Windward surface 1211 Windward boundary 122 Leeward surface 2 Abandoned area 3 Cooling fan 31 Shaft 32 Fan blade 321 Windward surface 322 Leeward surface 323 Boundary 4 Endurance Area

Page 12 M241966 Brief description of the drawings 5 Upper plate 51 Air inlet 6 Lower frame 61 Receiving space 62 Motor 63 Exhaust port ΐΒΙ Page 13

Claims (1)

M241966 6. Scope of patent application 丄 · A centrifugal swept-type cooling fan type airfoil improvement. The cooling fan has a shaft part, and a plurality of fan blades surround the shaft part, which is characterized by: The fan blade has a windward side and a leeward side, and the intersection of the windward side and the leeward side is one side. The boundary presents an arc shape protruding outwards, and the windward side and the leeward side also present each. The arcs $ protruding outward respectively. 2 · According to the improvement of the fan blade airfoil of the centrifugal sweep-type cooling fan described in item 1 of the scope of patent application, the windward side or leeward side can be up and down. 3. The fan blade airfoil modification of the centrifugal sweep-type cooling fan described in item 1 of the scope of patent application, the material of the cooling fan is made of plastic. 4 · The fan blade airfoil improvement of the centrifugal swept-type cooling fan described in item χ of the patent application scope, the fan blade of the cooling fan is solid. 5. The fan blade airfoil improvement of the centrifugal swept-type cooling fan described in item 丄 of the scope of patent application. The cooling fan can be arranged in a frame. 6. The fan blade airfoil improvement of the centrifugal sweep-type cooling fan described in item 5 of the scope of patent application, the fan frame includes an upper plate body and a lower pivot body. 7. The fan blade airfoil improvement of the centrifugal swept-type cooling fan as described in item 6 of the patent scope of claim 4, the upper plate system has a plurality of air inlets. 8 · The centrifugal swept-type cooling fan described in item 6 of the scope of the patent application has improved fan blade airfoil, and the lower frame system has a space for accommodation. The centrifugal swept-type cooling fan described in Item 6 of the patent claim is a modification of the 10 blade airfoil. The lower frame system can be equipped with a motor. ] • The centrifugal sweep sweep cooling fan described in item 6 of the scope of patent application Page 14 M241966 Page 15