JP6141412B2 - Fan - Google Patents

Description

The present invention relates to a fan. More specifically, the present invention rotates two rows of rotating blades arranged vertically so as to face each other in opposite directions, and at the same time, the difference in atmospheric pressure between two rotating blades. It is related with the electric fan which draws an airflow behind and increases an air volume and a wind speed .

Conventional home fans typically include a set of vanes or vanes that are mounted to rotate about an axis, and a drive that rotates the vane sets to generate a flow of air. The movement and circulation of the air flow generates a “wind chill” or breeze, which results in the heat being dissipated by convection and evaporation, and the user will experience a cooling effect.

  Such a fan can be used in various sizes and forms. For example, some ceiling fans have a diameter of 1 m or more, and are generally mounted in a manner suspended from the ceiling so as to provide a downward air flow to cool the room. On the other hand, many desk fans have a diameter of about 30 cm and are generally free-standing and portable. A stand-type tower fan generally includes a long vertical extension case approximately 1 m in height and contains one or more sets of rotary vanes to produce an air flow of 300-500 l / sec. In order to rotate the outlet from the tower type fan so that the air flow spreads over a wide area in the room, a reciprocating rotation mechanism may be employed.

  The general electric fan or tower type electric fan described above needs to employ a motor having a relatively high output because the discharge amount of the wind is determined by the number of rotations of the rotary blades.

  That is, the strength of the wind is determined by the size and the number of rotations of the rotating blades of the fan. The current situation is that the output is considerably lower than the energy input used by the motor, and in order to overcome this, a technique for increasing the strength of the wind per input energy is required.

The present invention is for solving the above-described problems, and its purpose is to effectively rotate air flow along with an increase in the lift of airflow by rotating two rows of rotating blades arranged to face each other in opposite directions. An object of the present invention is to provide a fan that has an effect of increasing the distance .

Another object of the present invention is that the rotary blades are installed in two rows and then rotated in opposite directions, but are provided between the two rotary blades by the pressure of air generated by the two rotary blades. the pressure difference between the first openings attract rear airflow space is to provide a fan you to increase the air volume and wind speed.

Another object of the present invention is to provide a fan that further doubles the wind speed and the air volume by the airflow flowing along the second opening hole when the air volume sent out by the rotary blade is sent out from the discharge hole. is there.

  To achieve the above object, the electric fan of the present invention has a first opening hole in the center, an inflow hole and an exhaust hole are formed in the inner and outer peripheral surfaces, and a frame-like case that forms a space inside, When a rotating blade is installed in the space and rotated by power means, a rotating part that sucks outside air into the inside through the inflow hole and discharges it from the discharge hole, and a front part of the case are provided, And a cover that has a second opening hole that communicates with the one opening hole, and that allows air to be discharged from the inside of the second opening hole to the outside through the discharge hole.

  According to the present invention, the second opening hole is configured by inclining the inner surface so that the cross-sectional area increases from the rear to the front.

  According to the present invention, the rotating unit coupled to the space is configured by forming a plurality of rotating blades radially on the outer peripheral edge of the shaft and transmitting and connecting the shaft and the power unit.

  According to the present invention, the spaces are formed in two rows spaced apart from each other, and the rotary blades are arranged vertically in each of the spaces.

  According to the present invention, the ends of line segments in two columns and two rows are connected to each other, and rotating blades are installed in the respective spaces in the horizontal and vertical directions.

  According to the present invention, the rotary blade is coupled to the space via a bracket, and the bracket is bent at the upper portion of the joint portion having a certain length and the shaft. A fixed portion having a joint hole to be coupled; a bent portion formed at a lower portion of the joint portion; a receiving portion coupled to a lower portion of the power means; and a connecting portion formed on the fixed portion and the receiving portion, respectively. A fixed bracket provided in the space and a connecting bracket fixed integrally.

The fan of the present invention for solving the above-described problems is obtained by combining the frame-shaped case and the cover, and then installing the rotating blades in two rows so as to face both sides of the internal space , respectively. The rotating blades reversely rotate with each other to increase the effective ventilation distance as the lift of the airflow increases.
It has the effect of having it.

In addition, the electric fan of the present invention is provided between two rotating blades by air pressure generated by two rotating portions at the same time as rotating two rows of rotating blades arranged to face each other in opposite directions. There is an effect that the airflow and the wind speed are increased by attracting the airflow behind by the pressure difference of the first opening hole.

That is, by increasing the internal pressure of the first opening hole of the case, the air velocity and the air volume are further doubled by the airflow flowing along the second opening hole when the air having a high flow velocity through the discharge hole escapes and is sent to the outside. To.

The electric fan of the present invention has an effect that the delivery amount can be determined or doubled by the lengths of the plurality of rotating blades .

In addition, when the electric fan of the present invention is rotated by changing the rotational speeds of the rotary blades installed in two rows, there is an effect that the blowing direction can be adjusted by the pressure difference.

Furthermore, the electric fan of the present invention is manufactured in such a manner that the rotating blades can be installed via a bracket in order to easily install the rotating blades in the internal space of each line segment formed in the ring-shaped case. There is an effect of improving efficiency.

The perspective view which shows the 1st Example of the electric fan of this invention 1 is an exploded perspective view of the electric fan shown in FIG. Sectional view of the fan of FIG. The perspective view which shows the electric fan of the 2nd Example of this invention. Cross section of the fan of FIG. The graph which compares and shows the ventilation distance and ventilation width of the electric fan of this invention, and the electric fan which is a comparison object The graph which compares and compares the ventilation distance with respect to the pressure of the fan of this invention, and the fan which is a comparison object A three-dimensional graph showing a comparison of the blowing distance and blowing width of the fan of the present invention and the fan to be compared. The graph which compares and compares the ventilation distance of the 1st Example divided by the shape of the 1st opening hole which concerns on the Example of the electric fan of this invention, and a 2nd Example

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  First, it should be noted that in the drawings, the same components or parts are denoted by the same reference numerals as much as possible. In describing the present invention, specific descriptions of related well-known functions or constructions are omitted so as not to obscure the subject matter of the present invention.

  First, as shown in FIGS. 1-5, the electric fan 100 of this invention is comprised from the case 110, the cover 120, and the rotation part 130. FIG.

  The case 110 is formed in a polygonal frame shape. The case 110 is composed of one or more parts forming a polygon.

Alternatively , in the present invention, the case 110 is described as a streamline shape having two parts or a quadrangular case 110 having four parts, and the shape is not limited.

In other words , in the first embodiment, the case is divided so that four rotating parts are installed in each part of the case having a substantially square shape . In the second embodiment of the present invention, two rotating parts are arranged in two rows. case for installation to face the the Ru respectively provided.

Specifically, in the second embodiment, as shown in FIG. 4, a streamlined case 110 is provided, and spaces 111 are formed on both sides of the case 110, respectively. The blades 132 are vertically installed in two rows so as to face each other.

Alternatively, as shown in FIG. 1 , the space 111 of the rectangular case 110 is formed so that the end portions of each part of the two-row, two-row columnar structure are connected to each other, and is divided into each of the sections 111 divided vertically and horizontally. Installs the rotating blades 132 horizontally or vertically.

  As shown in FIG. 1, such a polygonal case 110 has a ring shape as a whole and has a first opening hole 114 formed in the center.

  Here, the body of the polygonal case 110 may be referred to as a frame.

The first embodiment and the second case 110 mentioned in the examples, the flow-in hole 112 formed on the outer peripheral surface, the inner peripheral surface forming the discharge hole 113. The inflow hole 112 and the discharge hole 113 communicate with the space 111.

Here, the case middle of the first embodiment and the second embodiment is provided with a first opening hole.

Then, the although the space 111 the rotating part 130 is installed, the rotating part is rotated by the power means 133 by installing a rotary blade 132 having a plurality of blades 132b on the outer periphery, respectively, the inflow hole 112 The outside air is sucked into the space 111 through the air and discharged from the discharge hole 113.

  In particular, the rotating blade 132 has a plurality of blades 132b formed radially on the outer periphery of a shaft 132a having a certain length.

  Since the power means 133 is installed on each of the rotating blades 132, the rotating shaft of the motor and the shaft 132 a of the rotating blade 132 are connected by a direct power method, and the rotating blade 132 is rotated by the rotational force from the power means 133. It can be so.

In the first embodiment, the rotary blade 132 is coupled to the space 111 via a bracket 140.

  The bracket 140 includes a joint portion 141, a fixing portion 142, a receiving portion 144, and a connection bracket 145.

  That is, the joint portion 141 has a certain length and is equivalent to the length of the rotary blade 132.

  The fixing part 142 has a joint hole 143 that is bent at the upper part of the joint part 141 and coupled to the shaft 132a.

Further, the receiving portion 144 is bent at the lower portion of the joint portion 141, and the power means 1
The lower part of 33 is connected.

  In addition, the connecting bracket 145 is fixed integrally with the fixing bracket 115 provided in the space 111 by forming the connecting portion in the fixing portion 142 and the receiving portion 144, respectively.

  In this manner, the connecting bracket 145 in the bracket 140 is coupled to the fixed bracket 115 in the space 111 so that the bracket 140 is installed in the space 111. Then, between the joint portion 141 and the fixed portion 142 of the bracket 140, the rotating blade 132 on which the power unit 133 is mounted is installed.

  In the end, in order to easily install the rotary blade 132 in the space 111 inside each part provided in the ring-shaped case 110, the rotary blade 132 can be installed via the bracket 140, so that the manufacturing efficiency is improved. There is an effect to improve.

When the electric fan 100 of the first embodiment and the second embodiment configured as described above rotates the rotary blade 132 via the power means 133, external air flows into the space 111 via the inflow hole 112. Then, air is discharged from the discharge hole 113.

  The cover 120 is provided in front of the case 110 and has a second opening 121 that communicates with the first opening 114, so that air can flow from the inside of the second opening 121 to the outside via the discharge hole 113. To be discharged.

  At this time, the inner surface of the second opening hole 121 is inclined so that the cross-sectional area increases from rear to front.

This is because air discharged from one or more discharge holes 113 partially merges while moving to the second opening hole 121 side through the first opening hole 114, and the flow velocity of the air is increased.

  That is, the air pressure is low on the first opening hole 114 side of the case 110 where the air flow rate is fast, and the air pressure is relatively high on the second opening hole 121 side. That is, since the force of air acts from high pressure to low pressure, high-speed air passing through the case 110 passes outside air together to form a constant and strong air flow, thereby generating wind.

  As a result, the electric fan 100 according to the present invention is configured such that after the frame-shaped case 110 and the cover 120 are coupled, the rotating portion 130 is installed in the internal space 111, so that the outside air can be drawn through the inflow hole 112. In order to increase the internal pressure of the space 111 by sucking in, air having a high flow velocity escapes from the discharge hole 113 and air around the cover 120 passes through the cover 120 to generate an air flow. By increasing the flow velocity of the air and discharging it to the outside, there is an effect that a stronger wind strength can be obtained.

In other words, after the frame-shaped case 110 and the cover 120 are joined together, the rotating blades 132 are reversed from each other by installing the rotating blades 132 in two rows in the internal space 111 so as to face both sides. Rotation has the effect of increasing the effective ventilation distance with the increase in the lift of the airflow.

In addition, two rows of rotating blades 132 arranged so as to face each other rotate in opposite directions, and at the same time, a first opening provided between the two rotating blades 132 by the pressure of air generated by the two rotating blades 132. There is an effect of increasing the air volume and the wind speed by attracting the airflow behind by the pressure difference of the hole 114.

That is, by increasing the internal pressure of the first opening hole 114 of the case 110, when air having a high flow velocity escapes from the discharge hole and is sent to the outside, the air velocity and the air volume are further increased by the airflow flowing along the second opening hole 121. There is an effect of making it double.

Then, there is an effect that the delivery amount can be determined or doubled depending on the length of the plurality of rotating blades 132.

Furthermore, when the rotation speeds of the rotary blades 132 installed in the two rows are made different from each other, there is an effect that the blowing direction can be adjusted by the difference in pressure.

The effect of the present invention is proved by the following experiment for proving this.

First, the electric fan is provided with a rotating blade 132 having a plurality of blades 132b formed on the outer peripheral edge of a circular shaft 132a and is rotated by power means. The electric fan is driven under the conditions shown in the following table.

Here, in the case of the comparative example, the rotary blades 132 are arranged vertically in one row, and in the case of the embodiment, the two rows of rotary blades arranged vertically so as to face each other are rotated in opposite directions.

When the rotary blades are driven under the same conditions as described above, the results of the air volume, the blowing distance, and the blowing width of the comparative example and the example are as shown in the graphs of FIGS.

First, FIG. 6 is a graph comparing the air blowing distance and air blowing state of the comparative example and the example. From FIG. 6, it can be seen that the blowing width and blowing distance of the example are significantly longer than those of the comparative example.

In other words, the air blowing distance L1 in the comparative example is 410 cm and the air blowing width W1 is 13 cm, whereas the air blowing distance L2 in the example is 600 cm and the air blowing width W2 is 23 cm.

The blowing distance and the blowing width show an effect proportional to the blowing area and the wind speed, and it can be seen that the blowing effect of the example is remarkably superior to the comparative example.

  Moreover, FIG. 7 is a graph which shows the ventilation distance with respect to the pressure of a comparative example and an Example. From FIG. 7, it can be seen that, compared with the comparative example, in the example, the blowing distance is remarkably long even at a low pressure value around the axis of the rotary blade.

That is, the pressure of the shaft of the rotary blade in the comparative example is 3.7 (mmAq), the pressure in the example is 2.7 (mmAq), and the pressure in the example is lower than the pressure in the comparative example. In other words, the blowing distance L1 of the comparative example is 375 cm, the blowing distance L2 of the example is 600 cm, and it can be seen that there is a difference in the blowing distance.

8a to 8c are three-dimensional graphs showing a comparison of the blowing distance, blowing width, and pressure between the comparative example and the example.

FIG. 8a is a three-dimensional graph showing the comparison of the blowing distance, blowing width and pressure of the comparative example and the example, and FIG. 8b is a graph showing the plane state of the graph of FIG. 8a and comparing the blowing distance. Yes, FIG. 8c is a graph showing the front state of the graph of FIG.

As shown in FIGS. 8a to 8c, it can be seen that the air blowing width and air blowing distances L2 and W2 of the example are significantly longer than L1 and W2 of the comparative example.

In particular, as shown in FIG. 8b, in the case of the comparative example, the air flow direction is inferior due to inferior air straightness, and in the case of the embodiment, it is possible to receive the guarantee of the air straightness and longer. You can get the guaranteed airflow distance.

Moreover, FIG. 9 is a graph showing the difference in straightness of the blown air depending on the presence or absence of the first opening hole and the second opening hole in the example.

That is, in the first embodiment and the second embodiment, two rows of rotating blades arranged vertically so as to face each other are rotated in opposite directions. In the case of the first embodiment, the rotating blades are spread in front of the rotating blades. A second opening hole having an open inclined surface is provided, and in the case of the second embodiment, the second opening hole is not provided.

Compared to the second embodiment, the first embodiment generates a pressure difference between the shafts of the rotating blades, and the air flow straightness is remarkably high, and the air blowing distance through the second opening hole is remarkably high. effective.

  The present invention described above is not limited by the above-described embodiments and attached drawings. It will be apparent to those skilled in the art to which the present invention pertains that various substitutions, modifications and changes can be made without departing from the spirit of the invention.

100 Fan 110 Case 111 Space 112 Inflow hole 113 Discharge hole 114 First opening hole 115 Fixed bracket 120 Cover 121 Second opening hole 130 Rotating part 132 Rotating blade 132a Shaft 132b Blade 133 Power means 140 Bracket 141 Joint part 142 Fixed part 143 Joint Hole 144 Receiving part 145 Connection bracket

Claims (8)

A frame-like case having a first opening hole in the center, forming an inflow hole and a discharge hole on the inner and outer peripheral surfaces, and forming a space inside;
When rotating blades are installed in the space and rotated by power means, a rotating part that sucks external air into the inside through the inflow hole and discharges it from the discharge hole,
A cover provided in front of the case, having a second opening hole communicating with the first opening hole, and allowing air to be discharged from the inside of the second opening hole to the outside through the discharge hole; Ri name contains,
The fan is characterized in that the ends of the two rows and two rows are connected to each other, and rotating blades are installed in the respective spaces in the horizontal or vertical direction .   2. The electric fan according to claim 1, wherein the second opening hole has an inner surface inclined such that a cross-sectional area thereof increases from rear to front.   The rotating part coupled to the space is configured by forming a plurality of rotating blades radially on the outer peripheral edge of the shaft, and transmitting and connecting the shaft and the power unit. Fan. The electric fan according to claim 1, wherein the inflow hole and the discharge hole are formed in an outer direction of the rotary blade . 2. The electric fan according to claim 1, wherein the rotating blade passes through the inflow hole and the discharge hole each time it makes one rotation . The rotary blade is coupled to the space via a bracket,
The bracket is
A joint having a certain length;
A fixing part that is bent at the top of the joint part and has a joint hole coupled to the shaft;
A receiving portion that is bent at the lower portion of the joint and is coupled to the lower portion of the power means;
The electric fan according to claim 3, wherein a connecting portion is formed on each of the fixing portion and the receiving portion, and the connecting bracket is fixed integrally with a fixing bracket provided in the space. The electric fan according to claim 6, wherein the connecting bracket is coupled to a fixed bracket formed in the space. The electric fan according to claim 6, wherein a joint hole is formed in the fixing part and the receiving part to couple the shaft.

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