WO2010104329A2 - Ventilation apparatus using an air curtain, and blower fan - Google Patents

Abstract

The present invention relates to a ventilation apparatus using an air curtain, in which a single blower fan sucks and discharges air at the same time in one direction to reduce costs and to simplify the configuration of the apparatus, as compared to conventional ventilation apparatuses in which a blower fan rotates to suck or discharge air in one direction. Further, the present invention relates to said single blower fan which is employed in the ventilation apparatus using an air curtain to suck and discharge air at the same time in one direction.

Description

Ventilation device and blower fan using air curtain

The present invention relates to a ventilator using an air curtain, the conventional ventilator was a type of suction or discharge in one direction when the blowing fan is rotated, but the present invention is to intake and discharge in one direction with one blower fan at the same time To reduce the cost, and relates to a ventilation device using a simple air curtain.

In addition, the present invention relates to a blower fan that can be used in the ventilation device using the air curtain to allow the suction and discharge in one direction at the same time.

1 is a cross-sectional view of a conventional general ventilation apparatus, FIG. 2 is a perspective view of the general axial blower fan shown in FIG. 1, FIG. 3 is an air intake state diagram of the ventilation apparatus shown in FIG. 1, FIG. Fig. 5 shows a schematic view of a suction area line of a conventional ventilator.

In general, the ventilator is a device that sucks harmful air located in front of the ventilator by a blower fan and discharges it to the rear. FIG. 1 shows a conventional general ventilator.

Referring to Figure 1, the blower is provided with a rotary blade (3) driven by the electric motor 2, the fixed blade (4) is provided on the rear of the rotary blade (3), the fixed blade (4) is an electric motor ( 2) and serves to guide the flow direction of air in a direction coinciding with the outlet (5). The electric motor 2 is located at the center of the duct 6, and the rotary shaft 7 of the electric motor 2 is connected to the hub 8 on which the rotary blade 3 is mounted to rotate the rotary blade 3. .

Referring to FIG. 2, the shape of the rotary blade 3 is different from the plate 8 in the radial direction from the hub 8 to the center of the rotary shaft 7. It is bent in the same direction and at the end of the rotary blade (3) close to the duct 6 is bent perpendicular to the direction of the rotation axis (7) has a shape of a twisted airfoil. Therefore, the air flows along the shape of the rotary blade (3). Referring to FIG. 1, the fixed blade (4) at the rear of the rotary blade (3) in order to match the flow of the flow and the direction of the duct (6) again Will be installed.

A general ventilator is used to inhale and discharge harmful air. As shown in FIG. 3, only the air around the intake port 1 and the air on the side and the rear of the intake port 1 are inhaled. 3 (a) shows a case where the inlet 1 of the duct 6 is straight, and FIG. 3 (b) shows a case where the inlet 1 is open and has a bell mouth shape.

In the case of Fig. 3A, a large recirculation area (vortex) is formed at the tip of the inlet port 1 when air is sucked in. This recirculation area causes the diameter of the inlet port 1 to be reduced, resulting in a significant decrease in suction efficiency. do. In addition, most of the clean air in the rear of the inlet 1 as well as the source of contamination located in front of the inlet (1) is sucked in most of the contaminated air located in the front is not properly sucked and discharged, rather the contaminated air in the room There is a problem that the entire room becomes turbid by circulation.

To solve this problem to some extent, it is the case of Figure 3 (b), as shown in Figure 3 (b) can be provided with a fallopian tube-shaped air inlet (9) so as to expand as the inlet (1) is opened. have. In this case, as shown in (a) of FIG. 3, the recirculation area formed at the tip of the suction port 1 disappears, thereby reducing the diameter of the duct 6. However, even in this case, not only the air in front of the intake port 1 but also the clean air in the rear of the duct 6 are still sucked in, so that the effect of inhaling the pollutants can be sufficiently expected if the position of the ventilator is far from the harmful gas source (x). none. If the air inlet 9 is further extended, this problem is slightly solved, but it is difficult to make it large indefinitely due to space constraints.

Another ventilator that solves the problem arising from the use of a simple duct is shown in FIG. The air curtain 16 is made to block the air sucked from the upper portion of the inner duct 12 to improve the suction performance. In this case, the suction blower 10 sucks and, on the contrary, the air curtain blower 11 serves to inject clean air, and for this purpose, the air flow path 13 is disposed between the inner duct 12 and the outer duct 14. The air curtain is formed between the end of the inner duct 12 and the end of the outer duct 14 to improve the suction performance.

Figure 5 shows a suction zone line of a conventional ventilator under the same operating conditions. FIG. 5A shows the suction region line 17 of the ventilator shown in FIG. 2A, and FIG. 5B shows the suction region line of the ventilator shown in FIG. 2B. 5 shows a suction area line 17 of the ventilator shown in FIG. Referring to Figure 5 it can be seen that the case of Figure 5 (c) equipped with the air ketene shows the best suction performance. However, a separate blower is required to form an air curtain, and the configuration of the ducts 12 and 14 for forming the air flow path 13, which is a supply passage of the air keten 16, is complicated, and the air curtain is 360. There is also a problem that is not formed uniformly, there is a problem that the size of the ventilation device as a whole, the cost is increased, there is a need for an improved device.

The present invention is to reduce the cost by operating only one blower to solve the problems occurring in the conventional ventilation system using the air keten as described above, the internal air duct for supplying air for making the air curtain It is installed between the outer duct and the outer duct so as to be a concentric tube, and the air curtain is formed equally along the circumference between the end of the inner duct and the end of the outer duct, and the blower is installed at any position of the inner duct. In order to effectively inhale and blow away distant air, it is to provide an excellent ventilation device with improved suction capacity.

In addition, the present invention is to provide a blower fan that is used in the above-mentioned ventilation device and connected to one electric motor to blow air in opposite directions.

The present invention the inner duct 110 and the outer duct 120; A hub 210 coupled to the rotation shaft 320 and disposed inside the inner duct 110; A suction rotary blade 220 formed to suck air through the inner duct 110 as the inner end is connected to the outer surface of the hub 210 and rotates; A rotary blade connecting portion 230 having an inner end connected to an outer end of the suction rotary blade 220; As the inner end is connected to the outer end of the rotary blade connecting portion 230 and rotates as opposed to the suction rotary blade 220 through the air flow path (P) formed between the inner duct 110 and the outer duct 120 A discharge rotary blade 240 formed to blow air in a direction; It relates to a ventilator using an air curtain comprising a.

In the present invention, the inner duct 110 has one side end such that a gap 110G is formed between the first inner duct 111 through which air is sucked through the one end and the other end of the first inner duct 111. The second inner duct 112 is installed to be spaced apart from the other end of the first inner duct 111 by a predetermined distance, and the suction rotary blade 220 is installed in the inner duct 110, the discharge rotation The wing 240 is disposed in the air flow path (P), the rotary blade connecting portion 230 is to be installed in the gap (110G) formed between the first inner duct 111 and the second inner duct 112. The first inner duct 111 may be a fallopian tube-shaped inner guide tube 111-1 at a predetermined portion including one side end, and the outer duct 120 may have the inner side at a predetermined portion including one side end. A fallopian tube-shaped outer guide tube 120-1 corresponding to the guide tube 111-1 may be formed.

The present invention includes an duct fixing part 310 having an inner end connected to an outer surface of the first inner duct 111 and having an outer end connected to an inner surface of the outer duct 120, wherein the air flow path The duct fixing portion 310 may be formed with a vortex forming surface inclined with respect to the longitudinal direction of the air flow path (P), so that the air passing through the (P) to form a vortex, the rotating shaft 320 An electric motor 330 for driving; A guide surface having a curvature in the opposite direction to the suction rotary blade 220 is formed so that the air sucked through the inner duct 110 flows in the longitudinal direction of the inner duct 110, and the electric motor 330 and the A fixed blade 340 for fixing and fixing the inner surface of the inner duct 110; In the present invention, the rotary blade connecting portion 230 adjacent to each other among the rotary blade connecting portion 230 is connected to each other, the first inner duct 111 and the second inner duct 112 as a whole. The gap formed between the 110G and can form a concentric ring shape.

On the other hand, the present invention is connected to the rotating shaft 320, the hub 210; An inner end is connected to an outer surface of the hub 210, and the suction rotary blade 220 is formed to blow air in one direction as the hub 210 rotates; A rotary blade connecting portion 230 having an inner end connected to an outer end of the suction rotary blade 220; An inner end is connected to the outer end of the rotary blade connecting portion 230, and as the hub 210 rotates so as to blow air in the opposite direction to the suction rotary blade 220 of the suction rotary blade 220 A discharge rotary blade 240 having a camber angle opposite to the camber angle; It relates to a blowing fan comprising a.

The present invention has the advantage that the cost can be reduced by using only one blower to escape the existing method of using two blowers.

Since the present invention uses only one blower, the formation of a supply flow path for supplying an air curtain has an advantage.

The present invention has the advantage that the concentricity between the outer duct and the suction duct is easily achieved so that the air curtain formed between the end of the inner duct and the end of the outer duct is completely the same along the circumferential surface, thereby improving the overall suction performance.

In the conventional method, the installation of the blower had to be installed at a position far from the inlet to form a supply passage. However, in the present invention, there is no problem in operation even if one blower is freely installed at the front or the rear of the inner duct. There is this.

1 is a cross-sectional view of a conventional general ventilator.

FIG. 2 is a perspective view of the general axial blower fan shown in FIG. 1; FIG.

Figure 3 is an air intake state of the ventilator shown in Figure 1;

Figure 4 is a cross-sectional view of a ventilation device using a conventional air curtain.

5 is a schematic view of a suction zone line of a conventional ventilator;

6 is a schematic diagram of Embodiment 1;

7 is a perspective view of the blowing fan of the first embodiment;

Fig. 8 is a front view of the blowing fan of the first embodiment as seen in the direction A of Fig. 7;

Fig. 9 is a side view of the rotary blade of the first embodiment in the direction B of Figs. 7 and 8;

<Description of the symbols for the main parts of the drawings>

110: internal duct 110 G: clearance

111: first inner duct 111-1: inner induction pipe

112: second internal duct

120: outer duct 120-1: outer induction pipe

210: hub 220: suction rotary blade

230: rotary blade connecting portion 240: discharge rotary blade

310: duct fixing part 320: rotating shaft

330: motor 340: fixed wing

P: air flow path

Hereinafter, with reference to the drawings will be described in detail an embodiment of the present invention.

Example 1

Example 1 relates to a ventilator using an air curtain according to the present invention.

FIG. 6 is a schematic view of Embodiment 1, FIG. 7 is a perspective view of the blower fan of Embodiment 1, FIG. 8 is a front view of the blower fan of embodiment 1 seen from the direction A of FIG. 7, and FIG. 9 is a view of FIGS. The side view of the rotary blade of Example 1 in the B direction of 8 is shown.

Referring to FIG. 6, the first embodiment includes an inner duct 110, an outer duct 120, a hub 210, a suction rotary blade 220, a rotary blade connector 230, and a discharge rotary blade 240.

Referring to FIG. 6, the inner duct 110 includes a first inner duct 111 and a second inner duct 112.

Referring to FIG. 6, a first inner duct 111 has a fallopian tube-shaped inner guide tube 111-1 formed at a predetermined portion including one side end thereof. The first inner duct 111 is formed in a cylindrical portion except for the inner guide pipe (111-1). In addition, the inner guide pipe (111-1) is formed in the same shape along all the radial direction.

Referring to FIG. 6, one end of the second inner duct 112 is spaced apart from the other end of the first inner duct 111 so that a gap 110G is formed between the other end of the first inner duct 111. Is installed. The second inner duct 112 is formed in a cylindrical shape having the same diameter as the cylindrical portion of the first inner duct 111. Thus, the gap 110G forms a circular ring shape.

Referring to FIG. 6, the outer duct 120 has a fallopian tube-shaped outer guide pipe 120-1 formed at a predetermined portion including one side end thereof. An air flow path P for an air curtain between the inner duct 110 is formed. It is installed to surround the inner duct 110 along the longitudinal direction to form a. The outer duct 120 is formed in a cylindrical shape in which a portion except the outer induction pipe 120-1 forms a concentric circle with a cylindrical portion of the inner duct 111. In addition, the outer guide pipe (120-1) is formed in the same shape along all the radial direction.

Referring to FIG. 6, the hub 210 is disposed inside the inner duct 110. The hub 210 may have the same structure as the hub of a conventional axial blower fan.

7 and 8 together, the suction rotor blade 220 has an inner end connected to an outer surface of the hub 210. Referring to FIG. 6, the suction rotary blade 220 is installed in the inner duct 110, and rotates as the hub 210 rotates so that air is sucked in through the inner induction pipe 111-1 of the inner duct 110. It is formed to be. That is, referring to FIG. 9, the camber angle (not shown) of the suction rotary blade 221 defined by the angle formed by the tangent of the leading edge 221 of the suction rotary blade 220 and the tangent of the trailing edge 222 is positive. It is formed to have a value of (positive).

7 and 8, the rotary blade connecting portion 230 has an inner end connected to an outer end of the suction rotary blade 220. Referring to FIG. 6, the rotor blade connecting portion 230 is installed in the gap 110G formed between the first inner duct 111 and the second inner duct 112. Rotating blade connecting portion 230 may be formed in an arc shape to be located in a predetermined section of the gap (110G), the distance between the inner end and the outer end of the rotary wing connecting portion 230 is the thickness of the first inner duct 111 2 is formed to be equal to the thickness of the inner duct (112). The rotary blade connecting portion 230 may be formed integrally with the suction rotary blade 220 and the discharge rotary blade 240, or may be formed separately from the suction rotary blade 220 and the discharge rotary blade 240. When formed separately from the suction rotary blade 220 and the discharge rotary blade 240, the rotary blade connecting portion 230 may be a bolt or pin for fastening them.

Referring to FIG. 7, although the two rotary blade connectors 230 adjacent to each other are illustrated as being separated from each other, the two rotary blade connectors 230 adjacent to each other may be connected to each other. That is, the rotary blade connecting portion 230 adjacent to each other among the rotary blade connecting portion 230 is connected to each other, so that the gap 110G and the concentric circle formed between the first inner duct 111 and the second inner duct 112 as a whole. It can form a ring shape. In this case, the air flowing in the inner duct 110 through the gap 110G and the air flowing through the air flow path P for the air curtain are prevented from interfering with each other.

Referring to Figure 6 discharge rotor blades 240 are installed in the air flow path (P) for the air curtain. The discharge rotary blade 240 is connected to the outer end of the rotary blade connecting portion 230, the inner end is rotated as the rotary blade connecting portion 230 rotates the inner guide pipe (111-1) and the outer guide pipe (120-). It is formed to discharge air through the air flow path (P) formed by 1). That is, referring to FIG. 9, the camber angle (not shown) of the discharge rotary blade 240 defined by the angle formed by the tangent of the leading edge 241 and the tangent of the trailing edge 242 of the discharge rotary blade 240 is negative. It is formed to have a value of (negative). The sign of the camber angle (not shown) of the discharge rotary blade 240 is opposite to the sign of the camber angle (not shown) of the suction rotary blade 220. Therefore, air flow is formed in the air flow path P in a direction opposite to air passing through the inner duct 110, and the air formed by the inner induction pipe 111-1 and the outer induction pipe 120-1 is formed. Air is blown out through the flow path P, and an air curtain is formed.

Referring to Figure 6 the air flow path (P) is provided with a duct fixing part 310. The duct fixing part 310 has an inner end connected to the outer surface of the first inner duct 111 and the outer end is connected to the inner side of the outer duct 120. The first inner duct 111 is fixedly installed inside the outer duct 120 by the duct fixing part 310. Although not shown in the drawings, the vortex forming surface inclined with respect to the longitudinal direction of the air flow path P in the duct fixing portion 310 so that air passing through the air flow path P forms a vortex (not shown). Is formed. By forming the vortex in the air passing through the air flow path (P), a stronger moment to the flow of the air curtain is formed.

Referring to FIG. 6, the rotation shaft 320 is fixedly connected to the hub 21.

Referring to FIG. 6, an electric motor 330 for driving the rotating shaft 320 is installed inside the inner duct 110.

Referring to Figure 6 inside the inner duct 110, the fixed blade 340 for connecting and fixing the inner surface of the electric motor 330 and the inner duct 110 is installed. Although not shown in the figure, the fixed blade 340 is the suction rotor blade 220 so that the air sucked through the inner induction pipe (111-1) of the inner duct 110 flows in the longitudinal direction of the inner duct (110). A guide surface (not shown) having a curvature in a direction opposite to that is formed. Ends of the fixed blades 340 opposite to the inner guiding pipe 111-1 of the inner duct 110 are installed such that their tangents face the longitudinal direction of the inner duct 110.

Embodiment 1 is provided with only one rotary blade consisting of the suction rotary blade 220 and the discharge rotary blade 240 can blow air in opposite directions. That is, since only one electric motor and a blowing fan can generate an air curtain, there is an advantage of reducing the cost.

Example 1 forms an air flow path (P) for making the air curtain, while the inner duct 110 and the outer duct 120 to be easily concentric pipe, the air curtain is one end and the outside of the inner duct 110 The same flow is formed 360 degrees between one end of the duct 120, there is an advantage that can be installed in any position of the inner duct 110 of the blowing fan.

Example 2

The second embodiment relates to the blowing fan described in the first embodiment.

Embodiment 1 includes a hub 210, the suction rotary blade 220, the rotary blade connecting portion 230 and the discharge rotary blade 240.

The description of these is as described in Example 1.

Claims (7)

Inner duct 110 and outer duct 120; A hub 210 coupled to the rotation shaft 320 and disposed inside the inner duct 110; A suction rotary blade 220 formed to suck air through the inner duct 110 as the inner end is connected to the outer surface of the hub 210 and rotates; A rotary blade connecting portion 230 having an inner end connected to an outer end of the suction rotary blade 220; As the inner end is connected to the outer end of the rotary blade connecting portion 230 and rotates as opposed to the suction rotary blade 220 through the air flow path (P) formed between the inner duct 110 and the outer duct 120 A discharge rotary blade 240 formed to blow air in a direction; Ventilation apparatus using an air curtain, characterized in that it comprises a. The method of claim 1, The inner duct 110 has one side end such that a gap 110G is formed between the first inner duct 111 through which air is sucked through one side end and the other end of the first inner duct 111. The second end of the inner duct 111 and a predetermined distance spaced apart is made of a second inner duct 112, The suction rotary blade 220 is installed in the inner duct 110, The discharge rotary blade 240 is disposed in the air flow path (P), The rotary blade connecting portion 230 is a ventilation device using an air curtain, characterized in that installed in the gap (110G) formed between the first inner duct 111 and the second inner duct (112). The method of claim 2, The first inner duct 111 is formed with a fallopian tube inner guide tube (111-1) in a predetermined portion including one side end, The outer duct 120 is a ventilation device using an air curtain, characterized in that the outer induction pipe 120-1 of the fallopian tube shape corresponding to the inner induction pipe (111-1) is formed in a predetermined portion including one side end. . The method according to claim 2 or 3, Inner end is connected to the outer surface of the first inner duct 111, the outer end includes a duct fixing portion 310 is connected to the inner surface of the outer duct 120, Air, characterized in that the duct fixing portion 310 is formed with an inclined vortex forming surface with respect to the longitudinal direction of the air flow path (P) so that the air passing through the air flow path (P) forms a vortex Ventilation with curtains. The method according to any one of claims 1 to 3, An electric motor (330) for driving the rotary shaft (320); A guide surface having a curvature in the opposite direction to the suction rotary blade 220 is formed so that the air sucked through the inner duct 110 flows in the longitudinal direction of the inner duct 110, and the electric motor 330 and the A fixed blade 340 for fixing and fixing the inner surface of the inner duct 110; Ventilation apparatus using an air curtain, characterized in that it comprises a. The method according to claim 2 or 3, Rotating blade connecting portion 230 adjacent to each other of the rotary blade connecting portion 230 is connected to each other, the gap 110G and the concentric circle formed between the first inner duct 111 and the second inner duct 112 as a whole. Ventilation apparatus using an air curtain, characterized in that to form a ring shape. A hub 210 connectable to the rotary shaft 320; An inner end is connected to an outer surface of the hub 210, and the suction rotary blade 220 is formed to blow air in one direction as the hub 210 rotates; A rotary blade connecting portion 230 having an inner end connected to an outer end of the suction rotary blade 220; The inner end is connected to the outer end of the rotary blade connecting portion 230, and as the hub 210 rotates so as to blow air in a direction opposite to the suction rotary blade 220 of the suction rotary blade 220 A discharge rotary blade 240 having a camber angle opposite to the camber angle; Blowing fan comprising a.

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