WO2018205310A1

WO2018205310A1 - Multi-hole fan rear cover and front cover, fan cover consisting of same and fan consisting of same

Info

Publication number: WO2018205310A1
Application number: PCT/CN2017/085811
Authority: WO
Inventors: 孙文郁; 黄秀敏; 孙武言; 孙武廷
Original assignee: 孙文郁; 黄秀敏
Priority date: 2017-05-11
Filing date: 2017-05-25
Publication date: 2018-11-15

Abstract

A multi-hole fan rear cover (10), which is disposed at a back side of a fan (F) and which comprises: a plurality of first holes (11), each first hole (11) comprising a first inlet (111), a first outlet (112) and a first hole body (113); the first outlet (112) is closer to the fan (F) than the first inlet (111), and the cross-sectional area of the first outlet (112) is smaller than the cross-sectional area of the first inlet (111). Further comprised are a multi-hole fan front cover (20), a multi-hole fan cover (1) consisting of the rear cover (10) and the front cover (20), and a fan (F) consisting of the same. The multi-hole fan cover may increase the speed of airflow which the fan expels and reduce air temperature, while being environmentally friendly and saving energy. After air enters the first hole body (113) by means of the first inlet (111), the air is acceleratedly ejected due to the smaller cross-sectional area of the first outlet (112), i.e., an application of the valley effect; therefore, the speed of the discharge of airflow of the fan may be increased without increasing power consumption, while the present invention is suitable for existing styles of fans, and may be used for dissipating heat for an electrical product in addition to being used for convection in an indoor environment.

Description

Porous fan rear cover, front cover and fan cover composed thereof and fan thereof

Technical field

The invention is a cover body for improving the cooling ability of a fan and a fan formed.

Background technique

The main purpose of the fan is to promote the flow of air in the environment, to improve the indoor air quality or to reduce the user's somatosensory temperature or reduce the temperature of the device. Among them, the speed of the air after being pushed will affect the body's feeling of temperature. The faster the flow rate, the cooler the feeling, and the more the heat energy generated by the equipment can be increased.

However, the research and development direction of the fan enhancement effect is toward the method of promoting the fan speed increase or improving the shape of the blade, so that the air can be pushed faster and further, and the effect of increasing the temperature is improved. However, both of these methods will increase the energy consumption. In particular, increasing the motor power will generate more noise, which has a great impact on the environment. Especially, the global economic situation is generally depressed, so how can it not increase the energy usage fee? Under the condition that the environment can be maintained, the fan effect is improved, which is a problem that should be solved at present.

Summary of the invention

In order to solve the above problems, the present invention provides a multi-hole fan rear cover which can increase the speed of the airflow entering the rear of the fan, so that the airflow speed of the fan is increased, and the present invention can effectively reduce the air passing through the rear cover of the multi-hole fan. The temperature has the effect of natural environmental protection and electricity saving.

To achieve the above object, the porous fan rear cover of the present invention is disposed at the rear of a fan and includes a plurality of first holes. Each of the first holes includes a first inlet, a first outlet and a first hole, the first hole is located between the first inlet and the first outlet, and the first outlet is closer to the first inlet The fan has a cross-sectional area of the first outlet that is smaller than a cross-sectional area of the first inlet.

With the above structure, after entering the first hole through the first inlet, the air will have an effect of accelerating the ejection due to the small cross-sectional area of the first outlet, thereby making it possible to increase the airflow speed of the fan without increasing the amount of electric power. Speed up and fit the fan of the existing style.

Preferably, the first inlet is polygonal, circular, plum-shaped, elliptical, curved, curved, fan-shaped or linear, or the first outlet is polygonal, circular, plum-shaped, elliptical, curved. Shape, arc, sector or line.

Preferably, the polygon is a regular polygon, a diamond, or a rectangle.

Preferably, the first body has a thread. Therefore, after the air passes through the first hole body, the rotation can be caused by the thread to improve the stability of the air flow after leaving the first outlet. Of course, the first hole body can also be made into a smooth surface, which reduces the friction force when the airflow flows, so that the flow rate can be increased to the highest.

Preferably, the first hole body has a "V" shape or a "U" shape along the axial section of the rear cover of the multi-hole fan.

Moreover, the present invention further provides a porous fan front cover that can be disposed in front of a fan and includes a plurality of second holes, each of the second holes including a second inlet, a second outlet, and a second aperture The second hole is located between the second inlet and the second outlet, and the second inlet is closer to the fan than the second outlet, and the cross-sectional area of the second inlet is smaller than the cross-sectional area of the second outlet.

Thereby, the front cover of the porous fan can cause the fan to drive the blown wind to accelerate to the outside of the second outlet to achieve the purpose of acceleration. Overcoming the well-known technology requires the use of a higher power motor to accelerate the efficiency of air discharge, while having environmental benefits.

Preferably, the second inlet is polygonal, circular, plum-shaped, elliptical, curved, curved, fan-shaped or linear, or the second outlet is polygonal, circular, plum-shaped, elliptical, curved. Shape, arc, sector or line.

Preferably, the polygon is a regular polygon, a diamond, or a rectangle.

Preferably, the second body has a thread.

Preferably, the second hole body has a "V" shape or a "U" shape along the axial section of the front cover of the multi-hole fan. The open end of the "V" or "U" shape corresponds to the second inlet end.

The present invention further provides a multi-hole fan cover that can be disposed on the front and rear of the fan, and includes a multi-hole fan back cover and a multi-hole fan front cover, the multi-hole fan rear cover and the multi-hole fan front cover Connect to each other. Thereby, the flow rate of the air finally discharged from the second outlet can be further increased.

The present invention further provides a fan according to the foregoing, which is provided with the above-mentioned porous fan rear cover or the above-mentioned porous fan front cover or the above-mentioned porous fan cover, thereby overcoming the known disadvantages and providing superior performance. And energy-saving fans.

DRAWINGS

The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the invention. among them:

Figure 1 is a schematic view showing the use of a porous fan rear cover.

2 to 4 are perspective views of the rear (front) cover of the multi-hole fan.

Figure 5 is a front elevational view of another rear (front) cover of a multi-hole fan.

6 is a schematic cross-sectional view of the first (two) hole body of the embodiment shown in FIG. 5 along the axial direction of the rear (front) cover of the multi-hole fan.

Figure 7 is a front elevational view of another rear (front) cover of a multi-hole fan.

Figure 8 is a front elevational view of another rear (front) cover of a multi-hole fan.

Figure 9 is a cross-sectional view of the first (two) hole body of the embodiment of Figure 8 taken along the axial direction of the rear (front) cover of the multi-hole fan.

Figure 10 is a front elevational view of another rear (front) cover of a multi-hole fan.

Figure 11 is a front elevational view of another rear (front) cover of a multi-hole fan.

Figure 12 is a cross-sectional view of the first embodiment shown in Figure 11 along the axial direction of the rear (front) cover of the porous fan.

Figure 13 is a front elevational view of the rear (front) cover of the multi-hole fan of Figure 2;

Figure 14 is a schematic view showing the use of a front cover of a porous fan.

Figure 15 is a schematic view of the use of a multi-hole fan cover.

Description of the symbols:

1...porous fan cover

10...porous fan back cover

11...the first hole

111...first entrance

112...first exit

113...the first hole

20...porous fan front cover

21...the second hole

211...second entrance

212...second exit

213...the second hole

F...fan

detailed description

As shown in FIG. 1 , the present embodiment is a porous fan rear cover 10 disposed at the rear of a fan F and includes a plurality of first holes 11 , each of the first holes 11 including a first inlet 111 . a first outlet 112 and a first hole 113. The first hole 113 is located between the first inlet 111 and the first outlet 112, and the first outlet 111 is closer to the fan than the first inlet 113. F, and the cross-sectional area of the first outlet 111 is smaller than the cross-sectional area of the first inlet 113.

Through the narrow tube effect produced by the first hole 11 described above, when the fan starts to operate, the air behind it will first pass through the first inlets 111 of the porous fan rear cover 10, and pass through the first holes. After 113, a higher flow rate of wind exits the first outlet 112, resulting in a lower gas pressure at the first outlet 112 (i.e., the Bernoulli principle of fluid mechanics), thereby producing a lower temperature (PV = NRT). The air flow, so this embodiment can also achieve the effect of reducing the air temperature. Therefore, whether it is used for environmental convection or lowering the temperature of the appliance, it has better performance than the known fan.

The first inlet 111 and the first outlet 112 are respectively a positive polygon (as shown in FIG. 2, FIG. 7, FIG. 13 and FIG. 11), a polygon (as shown in FIGS. 3 to 4), and a diamond shape (eg, Figure 8), circular (as shown in Figure 10), plum-shaped (as shown in Figure 11), oval (not shown), rectangular (as shown in Figure 5), curved (not shown) , a fan shape (not shown), a line shape (not shown) or a curve shape (not shown) or a combination of such shapes. Through different shapes, in addition to being easy for the user to distinguish the direction of the inlet, the corresponding selection can be made with different environments, so that the heat dissipation effect is optimal (ie, without increasing the power of the blade motor).

In addition, the first hole body 113 can be made to have a thread (not shown), thereby causing the flowing airflow to rotate, and after leaving the first outlet 112, the flow will be stably advanced, with the effect of increasing the flow rate, and According to the formula of PV=NRT, the temperature of the airflow will reduce more temperature, which is conducive to the subsequent purpose of cooling the electric appliance. For the fan generally used for indoor circulation, it will have a cooling effect, and for the summer, a large amount of cold air is required to cool down. In terms of regions, it can save energy and save energy.

Moreover, referring to FIG. 6, FIG. 9 and FIG. 12, the first hole body 113 has a "V" shape or a "U" shape along the axial section of the rear (front) cover of the multi-hole fan (as shown in FIG. 12). In order to promote the narrow tube effect of the gas, the gas flowing out of the first outlet 112 can achieve an effect of increasing the flow rate and cooling, and has a better effect on the application of the environment to cool down or to cool the interior of a particular electrical appliance.

As shown in FIG. 14, the present invention further provides an embodiment of a porous fan front cover 20 for being disposed in front of a fan F. The second hole 21 includes a second inlet 211, a second outlet 212, and a second hole 213. The second hole 213 is located at the second inlet 211 and the second hole 211. Between the two outlets 212, and the second inlet 211 is closer to the fan F than the second outlet 212, and the second inlet The cross-sectional area of 211 is smaller than the cross-sectional area of the second outlet 212.

The structural principle used in this embodiment is the same as that of the porous fan rear cover 10 described above, which allows the airflow after being driven by the fan F to apply the narrow tube principle again, so that the airflow can be accelerated and cooled again, which is beneficial to the subsequent environment to produce better convection. Or to reduce the ambient temperature, it also has the effect of improving the cooling temperature of the electrical appliance.

Similarly, the second inlet 211 or the second outlet 212 is a regular polygon (as shown in FIG. 2, FIG. 13 and FIG. 11), a polygon (as shown in FIGS. 3, 4 and 5), and a diamond shape. (as shown in Figure 8), circular (as shown in Figure 10), plum-shaped (as shown in Figure 11), oval (not shown), rectangular (as shown in Figure 5), curved (Figure not Show), sector (not shown), line (not shown) or curved (not shown) or a combination of such shapes. Moreover, the second hole body 213 can also have a thread (not shown) to achieve the effect of improving stability and acceleration. The second hole 213 is also in a "V" shape or a "U" shape in a cross section along the axial direction of the front cover of the multi-hole fan.

Referring to FIG. 15 again, a porous fan cover 1 of the above embodiment is combined to cover the front and rear of the fan F, and includes the above-mentioned porous fan rear cover 10 and the porous fan front cover 20, and The porous fan rear cover 10 and the porous fan front cover 20 are coupled to each other. Thereby, the porous fan cover 1 can be used for directly replacing the existing fan, and as described above, the fan F performance is directly improved by the narrow tube effect, and the multiple effects of increasing the wind speed and cooling are achieved.

In summary, the present invention, whether it is a multi-hole fan cover 1, a porous fan rear cover 10, a multi-hole fan front cover 20 or a combination of individual and fan F, is a feature protected by the present invention.

The above is only the exemplary embodiments of the present invention and is not intended to limit the scope of the present invention. Equivalent changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are intended to be included within the scope of the invention. In addition, it should be noted that the components of the present invention are not limited to the above-mentioned overall application, and the technical features described in the specification of the present invention may be selected according to actual needs, or may be used alone or in combination. Therefore, the present invention Other combinations and specific applications related to the inventive aspects are of course covered.

Claims

A multi-hole fan rear cover can be disposed behind a fan, wherein the multi-hole fan rear cover comprises:

a plurality of first holes, each of the first holes: a first inlet, a first outlet, and a first hole, the first hole being located between the first inlet and the first outlet, and the first hole An outlet is closer to the fan than the first inlet, and a cross-sectional area of the first outlet is smaller than a cross-sectional area of the first inlet.
The multi-hole fan back cover according to claim 1, wherein the first inlet is polygonal, circular, quincunx, elliptical, curved, curved, fan-shaped or linear, or the first outlet is Polygon, round, plum, elliptical, curved, curved, fan or linear.
A multi-hole fan back cover according to claim 2, wherein the polygon is a regular polygon, a diamond, or a rectangle.
The multi-hole fan back cover of claim 1 wherein the first bore has a thread.
The multi-hole fan back cover according to claim 1, wherein the first hole body has a "V" shape or a "U" shape along an axial cross section of the multi-hole fan rear cover.
A multi-hole fan front cover can be disposed in front of a fan, and the multi-hole fan front cover includes:

a plurality of second holes, each of the second holes: a second inlet, a second outlet and a second hole, the second hole being located between the second inlet and the second outlet, and the second hole The second inlet is closer to the fan than the second outlet, and the cross-sectional area of the second inlet is smaller than the cross-sectional area of the second outlet.
The multi-hole fan front cover according to claim 6, wherein the second inlet is polygonal, circular, quincunx, elliptical, curved, curved, fan-shaped or linear, or the second outlet is Polygon, round, plum, elliptical, curved, fan or linear.
The multi-hole fan front cover according to claim 7, wherein the polygon is a regular polygon, a diamond, or a rectangle.
The multi-hole fan front cover of claim 6 wherein the second bore has a thread.
The multi-hole fan front cover according to claim 6, wherein the second hole body has a "V" shape or a "U" shape along an axial cross section of the front cover of the multi-hole fan.
A multi-hole fan cover can be disposed on the front and rear of the fan, wherein the multi-hole fan cover comprises:

A multi-hole fan rear cover can be disposed behind a fan, which includes:

a plurality of first holes, each of the first holes: a first inlet, a first outlet, and a first hole, The first hole is located between the first inlet and the first outlet, and the first outlet is closer to the fan than the first inlet, and the cross-sectional area of the first outlet is smaller than the cross-sectional area of the first inlet;

A multi-hole fan front cover can be disposed in front of a fan and coupled to the multi-hole fan back cover, and includes:

a plurality of second holes, each of the second holes: a second inlet, a second outlet and a second hole, the second hole being located between the second inlet and the second outlet, and the second hole The second inlet is closer to the fan than the second outlet, and the cross-sectional area of the second inlet is smaller than the cross-sectional area of the second outlet.
The multi-hole fan cover according to claim 11, wherein the first inlet is polygonal, circular, quincunx, elliptical, curved, curved, fan-shaped or linear, or the first outlet or the The second inlet or the second outlet may be polygonal, circular, plum-shaped, elliptical, curved, curved, fan-shaped or linear.
A multi-hole fan shroud according to claim 12, wherein the polygon is a regular polygon, a diamond, or a rectangle.
The multi-hole fan shroud of claim 11 wherein the first bore or the second bore has a thread.
The multi-hole fan cover according to claim 11, wherein the first hole body has a "V" shape or a "U" shape along the axial direction of the rear cover of the multi-hole fan, or the first The two-hole body has a "V" shape or a "U" shape along the axial section of the front cover of the multi-hole fan.
A fan characterized in that the fan is provided with the multi-hole fan rear cover according to claim 1 or the multi-hole fan front cover according to claim 6 or the porous type according to claim 11. Fan cover.