WO2015020296A1

WO2015020296A1 - Blowing apparatus

Info

Publication number: WO2015020296A1
Application number: PCT/KR2014/003058
Authority: WO
Inventors: 최홍진
Original assignee: 유제빈
Priority date: 2013-08-06
Filing date: 2014-04-09
Publication date: 2015-02-12
Also published as: KR101363622B1

Abstract

The present invention relates to a blowing apparatus capable of enhancing air flow performance. The present invention provides a blowing apparatus comprising: a housing having a receiving section formed therein; a plurality of intake fluid channel parts curvedly extending from the receiving section toward the periphery of the housing; a fan device disposed in the receiving section to suction fluid through the intake fluid channel parts; and a plurality of exhaust fluid channel parts curvedly extending from the receiving section toward the periphery of the housing to discharge air suctioned by the fan device to the outside.

Description

Blower

The present invention relates to a blower, and more particularly to a blower that can improve the flow performance of air.

In general, air conditioners are devices that make the indoor space comfortable as the air flows. The air conditioner is provided with a blowing device for flowing air. The blower device includes a case, a motor, and a fan. When the motor is driven, air flows as the fan rotates. The case forms a flow path so that air can flow. The fan has a structure in which a plurality of blades are radially disposed in the hub.

Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 2012-0076039 (published Jul. 09, 2012, title of the invention: an axial fan and an outdoor unit of an air conditioner including the same).

Conventionally, since the blower guides the flow of air by the case, there may be a limit in increasing the flow performance of the air. In addition, a motor having a large capacity is applied to improve the blowing performance of the blower. In addition, noise may increase as the fan is rotated at high speed.

Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, and an object of the present invention is to provide a blower apparatus which can improve the flow performance and blowing performance of the air.

Another object of the present invention is to provide a blower apparatus which can reduce noise by improving air flowability.

Blowing apparatus according to the present invention comprises: a housing in which the receiving portion is formed; A plurality of suction passage portions extending round from the accommodation portion toward the circumference of the housing; A fan device disposed in the accommodation part to suck fluid through the suction flow path part; And a plurality of discharge passages extending round from the accommodation portion toward the circumference of the housing and discharging the air sucked by the fan apparatus to the outside.

The suction passage portion may be formed in a shape that converges roundly in a clockwise or counterclockwise direction from the circumference of the housing toward the accommodation portion.

The discharge passage portion may be formed to be rounded in a direction opposite to the suction passage portion with respect to the receiving portion.

The suction flow path part may have a shape that narrows toward the receiving part side, and the discharge flow path part may have a shape that widens toward the circumferential side of the housing in the accommodation part.

The apparatus may further include a noise reduction unit communicating with the suction passage portion or the discharge passage portion to supply a fluid to the suction passage portion.

The fan device may include: a driving fan rotated in the same direction as the direction in which the suction flow path portion converges from the circumference of the housing to the accommodation portion by a motor; And a non-powered fan disposed on the suction side and the discharge side of the driving fan and rotated by the flow pressure of the fluid.

The drive fan includes a plurality of drive blades radially disposed on a drive hub, and the non-powered fan includes a plurality of non-powered blades radially disposed on the non-powered hub, and the pitch angle of the drive blades is a pitch of the non-powered blade. It can be formed smaller than the angle.

According to the present invention, since the suction passage portion and the discharge passage portion are formed to be round, the air flow performance can be improved.

Further, according to the present invention, since the suction passage portion and the discharge passage portion are connected to the noise reduction portion, it is possible to reduce the noise caused by the air flow.

1 is a perspective view showing a blowing device according to an embodiment of the present invention.

2 is a cross-sectional view showing a blowing device according to an embodiment of the present invention.

3 is a plan view showing the air inlet side of the blower apparatus according to an embodiment of the present invention.

Figure 4 is a rear view showing the air discharge side of the blower according to an embodiment of the present invention.

5 is a plan view showing a flow state of air in the suction flow path portion of the blower according to the embodiment of the present invention.

6 is a cross-sectional view showing a flow state of air in the accommodation portion of the blower according to the embodiment of the present invention.

7 is a rear view illustrating a flow state of air in the discharge passage part of the blower according to the exemplary embodiment of the present invention.

8 is a sectional view showing a blower according to another embodiment of the present invention.

9 is a partially enlarged view illustrating a blower apparatus according to another exemplary embodiment of the present invention.

10 is a front view illustrating a driving blade of a driving fan in a blower according to another embodiment of the present invention.

11 is a front view illustrating a non-powered fan non-powered blade in the blower according to another embodiment of the present invention.

12 is a cross-sectional view showing a flow state of air in the accommodation portion of the blower according to another embodiment of the present invention.

As a best mode for carrying out the invention, the blower of the present invention comprises: a housing 110 in which a receiving portion 120 is formed; A plurality of suction flow path parts 150 extending round from the accommodation part 120 to the circumference side of the housing 110; A fan device 160 disposed in the accommodation part 120 to suck fluid through the suction flow path part 150; And a plurality of discharge passage parts 180 extending round from the accommodation part 120 toward the circumference of the housing 110 and discharging the air sucked by the fan device 160 to the outside. do.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a blowing device according to the present invention. In the process of describing the blower, the thicknesses of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view showing a blower according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a blower according to an embodiment of the present invention, Figure 3 is a blower according to an embodiment of the present invention A plan view of the air inlet side of the device.

1 to 3, the blower according to an embodiment of the present invention may be applied to an air conditioner such as an air conditioner, a heater, an air conditioner, a dehumidifier, an air cleaner, and various devices capable of flowing air.

The blower device includes a housing 110, a suction flow path part 150, a fan device 160, and a discharge flow path part 180.

The accommodation part 120 is formed inside the housing 110. The accommodation part 120 is formed at the center of the housing 110. The accommodation unit 120 is a space in which the fan device 160 can be installed.

The housing 110 may be formed by combining the first case 111 and the second case 113. A cylindrical connecting pipe part 123 is formed between the first case 111 and the second case 113. The receiving part 120 is formed inside the connection pipe part 123. The housing 110 may be formed in a polygonal shape or a circle shape as a whole.

The suction flow path part 150 may be formed at one side (upper side in FIG. 2) of the housing 110. In this case, a suction chamber 140 is formed between the first case 111 and the receiving part 120, and a suction flow path part 150 is formed in the suction chamber 140. The suction chamber 140 forms a space in which the suction passage part 150 can be formed. The suction chamber 140 may be formed in a circular shape. The suction flow path part 150 includes an inlet part 151 formed in the first case 111.

The suction flow path part 150 may extend roundly from the receiving part 120 to the circumferential side of the housing 110.

Since the suction flow path part 150 is formed at the circumferential side of the housing 110 in the accommodation part 120, the suction flow path part 150 may be formed to be parallel to the plane of the first case 111. Therefore, since the height of a blower can be reduced, the thickness of an air conditioner can be manufactured thin.

Since the suction flow path part 150 extends round, the suction air flows smoothly along the suction flow path part 150 which is formed to be round. In addition, since the suction flow path part 150 is formed to be round, the flow path resistance can be reduced, and the occurrence of a dead zone can be reduced. Here, the dead zone means a section in which the fluid does not flow but stagnates.

The plurality of suction flow paths 150 may be disposed radially around the accommodation portion 120. The suction flow path 150 is connected to the inlet 151. Since the plurality of suction flow path parts 150 are disposed radially around the accommodating part 120, the fluid may be introduced from all sides of the accommodating part 120. In addition, since the suction flow path 150 is disposed radially around the accommodation part 120, the suction flow path 150 may be converged toward the accommodation part 120. In addition, since the external fluid is gradually compressed while moving to the receiving portion 120 side, it is possible to improve the fluidity of the fluid. In addition, since the suction flow path 150 is formed in almost all the spaces of the suction chamber 140, even if the thickness of the housing 110 is thin, the area of the suction flow path 150 may be increased.

The suction flow path part 150 is formed in a shape that converges roundly in a clockwise direction toward the accommodation part 120 at the circumference of the housing 110. In other words, the suction flow path part 150 is formed in a shape in which the receiving part 120 diffuses round in a counterclockwise direction toward the circumference of the housing 110.

Alternatively, the suction flow path part 150 converges in a counterclockwise direction toward the receiving part 120 side at the circumference of the housing 110. In other words, the suction flow path part 150 is formed in a shape in which the receiving part 120 diffuses round in a clockwise direction toward the circumference of the housing 110.

For example, when the air conditioner is used in the northern hemisphere, the suction passage 150 may be formed to converge in a clockwise direction toward the receiving portion 120 at the circumference of the housing 110. Therefore, since the fluid flows in the form of winding in the northern hemisphere roundly in a clockwise direction, the fluid is introduced into the receiving part 120, so that the fluid may be compressed by the Coriolis effect. At this time, since the fluid is drawn to the right (clockwise) direction of the flow direction by the Coriolis effect, the flow performance of the fluid and the flow rate of the fluid may be increased.

In addition, when the air conditioner is used in the southern hemisphere, the suction flow path 150 may be formed in a shape that converges roundly counterclockwise toward the receiving portion 120 at the circumference of the housing 110. Therefore, since the fluid flows in a form that is wound along the counterclockwise direction in the southern hemisphere, the fluid is introduced into the receiving part 120, so that the fluid may be compressed by the Coriolis effect. At this time, since the fluid is drawn to the right (counterclockwise) in the flow direction by the Coriolis effect, the flow performance of the fluid and the flow rate of the fluid can be increased.

3 illustrates a structure in which the suction flow path 150 converges clockwise from the circumference of the housing 110 toward the accommodation portion 120. However, the structure in which the suction flow path 150 is bent in the counterclockwise direction toward the receiving portion 120 from the circumference of the housing 110 and converges is the same as that of the discharge flow path 180 shown in FIG. The illustration of the suction flow path 150 formed in the direction is omitted.

The suction flow path part 150 may be formed in a narrower shape toward the receiving part 120 side. Since the suction flow path part 150 becomes narrower toward the receiving part 120 side, the fluid can be further compressed when the fluid flows by the Coriolis effect. Since the fluid is gradually compressed as the fluid flows along the suction flow path 150, the fluidity and the flow rate of the fluid may be further increased.

The plurality of suction flow path parts 150 are formed by a plurality of partition ribs 153 disposed radially around the accommodation part 120. The partition rib 153 is reduced in curvature toward the receiving portion 120 side from the circumference of the housing 110. Since the section rib 153 has a curvature decrease from the circumference of the housing 110 toward the accommodating part 120 side, the curvature of the suction flow path part 150 gradually decreases from the circumferential side toward the accommodating part 120 side. . At this time, as the fluid is moved from the circumferential side of the housing 110 to the receiving part 120 side, the acceleration is increased and the compression performance of the fluid is also improved. Thus, the suction performance and the flow rate of the fluid can be increased.

The noise reduction unit 155 communicating with the suction passage 150 may be further included. The noise reduction unit 155 is formed at a position corresponding to the suction passage 150 in the upper cover. The noise reduction unit 155 is formed to correspond to one or more suction passages 150. The plurality of noise reduction units 155 may be arranged along the circumferential direction with respect to the accommodation unit 120. In FIG. 3, a structure in which one noise reduction unit 155 is formed for each suction channel unit 150 is illustrated, but may be appropriately designed according to the length of the suction channel unit 150 and the flow velocity of the fluid.

The fluid is compressed while flowing along the suction flow path 150, and the noise reduction unit 155 reduces the compression noise by additionally supplying the fluid to the suction flow path 150. That is, the noise reduction unit 155 reduces the vortex of the fluid by supplying the fluid to the suction passage 150 to reduce the flow noise of the fluid.

The fan device 160 may be a driving fan 161 in which the suction flow path part 150 is rotated in the same direction as the direction in which the suction flow path 150 converges from the circumference of the housing 110 toward the receiving part 120. That is, when the suction flow path 150 is bent to converge in the clockwise direction from the circumference of the housing 110 toward the receiving portion 120 (see FIG. 3), the driving fan 161 rotates clockwise. do. In addition, when the suction flow path 150 is bent to converge in the counterclockwise direction toward the receiving portion 120 from the circumference of the housing 110 (see FIG. 4), the driving fan 161 is counterclockwise Is rotated. The fan device 160 includes a motor 161a, a hub rotated by the motor 161a, and a driving blade 161c disposed radially to the hub.

Since the fan device 160 is rotated in the same direction as the direction in which the suction flow path part 150 is formed, the fluid that is compressed while flowing along the suction flow path part 150 is compressed by the fan device 160 again. Thus, since the fluid is continuously compressed by the fan device 160, the pressure of the fluid can be increased significantly.

2 is a cross-sectional view showing a blower according to an embodiment of the present invention, Figure 4 is a rear view showing the air discharge side of the blower according to an embodiment of the present invention.

2 and 4, the discharge passage 180 may be formed at the other side of the housing 110 (lower side of FIG. 2). At this time, the discharge chamber 170 is formed on the outer side (lower side of FIG. 2) of the second case 113, and the discharge passage part 180 is formed in the discharge chamber 170. The discharge chamber 170 forms a space in which the discharge passage part 180 may be formed. The discharge chamber 170 may be formed in a circular shape on the opposite side of the suction chamber 140 with respect to the receiving part 120. The discharge flow path part 180 includes a discharge part 181 formed in the second case 113.

The discharge flow path part 180 may extend roundly from the receiving part 120 to the circumferential side of the housing 110.

Since the discharge flow path part 180 is formed at the circumferential side of the housing 110 in the accommodation part 120, the discharge flow path part 180 may be formed to be parallel to the plane of the second case 113. Therefore, since the height of a blower can be reduced, the thickness of an air conditioner can be manufactured thin.

Since the discharge flow path part 180 extends round, the fluid may flow smoothly along the discharge flow path part 180 formed to be round. In addition, since the discharge flow path part 180 is formed to be rounded, it is possible to reduce the flow path resistance and reduce the occurrence of dead zones. Here, the dead zone means a section in which the fluid does not flow but stagnates.

A plurality of discharge passage 180 may be disposed radially around the accommodation portion 120. The discharge part 181 is connected to the discharge passage part 180. Since the plurality of discharge flow path parts 180 are radially disposed around the accommodating part 120, the fluid may be discharged from the accommodating part 120 in all directions. In addition, since the discharge passage part 180 is disposed radially around the accommodating part 120, the discharge passage part 180 is disposed to diverge toward the outside of the housing 110 from the accommodating part 120. In addition, since the fluid of the receiving part 120 is gradually expanded while moving along the discharge flow path part 180, the fluidity of the fluid may be improved. In addition, since the discharge flow path unit 180 is formed in almost all the spaces of the discharge chamber 170, even if the thickness of the housing 110 is formed thin, it is possible to increase the area of the discharge flow path unit 180.

The discharge flow path part 180 is formed to be round in the opposite direction to the suction flow path part 150 with respect to the receiving part 120. That is, when the suction flow path 150 is formed to be diffused counterclockwise toward the circumference of the housing 110 in the housing 120, the discharge flow path 180 is the housing 110 in the housing 120. It is formed in a shape that is spread rounded clockwise toward the circumference of the. In addition, when the suction passage 150 is formed to be spread in the clockwise direction from the receiving portion 120 toward the circumference of the housing 110, the discharge passage portion 180 is formed of the housing 110 at the receiving portion 120. It spreads roundly counterclockwise toward the circumferential side.

The blower according to the present invention can be used in both the northern hemisphere and the southern hemisphere, but the direction of the discharge passage 180 and the suction passage 150 may vary depending on whether the northern hemisphere or the southern hemisphere is used.

For example, when the air conditioner is used in the northern hemisphere, the discharge passage portion 180 may be formed in a shape that is diffused in a clockwise direction toward the circumference of the housing 110 in the receiving portion 120. Therefore, since the fluid is discharged to the outside of the housing 110 while being diffused along the clockwise direction in the northern hemisphere, the fluid can be expanded by the Coriolis effect. At this time, since the fluid is drawn to the right (clockwise) direction of the flow direction by the Coriolis effect, the flow performance of the fluid and the flow rate of the fluid may be increased.

In addition, when the air conditioner is used in the southern hemisphere, the discharge passage portion 180 may be formed in a shape that is diffused round in the counterclockwise direction toward the circumference of the housing 110 in the receiving portion 120. Therefore, since the fluid flows in the southern hemisphere in a form spreading in the counterclockwise direction and is discharged to the outside of the housing 110, the fluid may be expanded by the Coriolis effect. At this time, since the fluid is drawn to the left side (counterclockwise) in the flow direction by the Coriolis effect, the flow performance of the fluid and the flow rate of the fluid can be increased.

4 illustrates a structure in which the discharge flow path part 180 diffuses clockwise from the receiving part 120 toward the circumference of the housing 110. However, since the structure in which the discharge flow path part 180 is wound in the clockwise direction toward the circumference of the housing 110 from the receiving part 120 is the same shape as the discharge flow path part 180 shown in FIG. The illustration of the discharge flow path unit 180 formed in the drawing is omitted.

The discharge flow path part 180 may be formed in a narrowing shape toward the receiving part 120 side. Since the discharge passage portion 180 is wider from the receiving portion 120 toward the outside of the housing 110, the fluid passage 180 may be further expanded when the fluid flows by the Coriolis effect. Since the fluid gradually expands as it flows along the discharge passage part 180, the fluidity and flow rate of the fluid may be further increased.

The plurality of discharge flow path portions 180 are formed by a plurality of partition ribs 183 disposed radially around the accommodation portion 120. The partition rib 183 increases in curvature from the receiving portion 120 toward the circumferential side of the housing 110. The partition rib 183 increases as the curvature increases from the accommodating part 120 toward the circumferential side of the housing 110 and expands as the fluid moves from the accommodating part 120 to the circumferential side of the housing 110. Thus, the discharge performance of the fluid can be improved.

An operation of the blower according to the exemplary embodiment of the present invention configured as described above will be described. The following description will be based on the blower used in the northern hemisphere of the earth.

Referring to FIG. 5, when the fan device 160 is driven, the fan device 160 sucks the fluid along the suction flow path part 150. Since the suction passage part 150 is formed to be wound round in a clockwise direction, the fluid is compressed while flowing roundly in a clockwise direction. Since the fluid flows in the form of winding in the clockwise direction, as the fluid is compressed by the Coriolis effect, the fluidity of the fluid can be improved and the flow rate can be increased. In addition, since the suction passage 150 is gradually narrowed toward the accommodation portion 120 from the circumference of the housing 110, the fluid may be further compressed as the fluid flows along the suction passage 150.

In addition, since the external fluid additionally flows into the suction flow path unit 150 through the noise reduction unit 185, the fluid of the suction flow path unit 150 is compressed by the fluid flowing through the noise reduction unit 185. In addition, the noise reduction unit 185 reduces the vortex of the fluid and reduces the flow noise of the fluid by additionally supplying the fluid in a specific section of the suction flow path unit 150.

Referring to FIG. 6, the fluid compressed in the suction flow path part 150 flows into the receiving part 120. As the fan device 160 is driven, the fluid in the accommodation part 120 is compressed again by the driving blade 161c. At this time, when the driving blade 161c is rotated, the fluid is compressed by one side surface (lower side in FIG. 6) of the driving blade 161c. One side of the driving blade 161c is a pressurizing surface for pressurizing the fluid. The fluid compressed by the driving blade 161c is discharged to the discharge passage part 180.

Referring to FIG. 7, the fluid compressed by the driving blade 161c flows along the discharge flow path part 180. Since the discharge flow path part 180 is formed in a shape that is spread in a clockwise direction along the circumference of the housing 110 in the accommodation part 120, the fluid is expanded while being flowed in a round direction in the clockwise direction. Since the fluid expands while flowing in a winding direction, the fluidity of the fluid may be improved and the flow rate may be increased as the fluid is expanded by the Coriolis effect. In addition, since the discharge passage portion 180 gradually widens from the receiving portion 120 toward the circumferential side of the housing 110, the discharge passage portion 180 may gradually expand as the fluid flows along the discharge passage portion 180.

In addition, since the external fluid is additionally introduced into the discharge flow path unit 180 through the discharge side noise reduction unit 185, the fluid of the discharge flow path unit 180 is introduced by the fluid introduced through the discharge side noise reduction unit 185. Gradually expands. In addition, the noise reduction unit 185 reduces the vortex of the fluid and reduces the flow noise of the fluid by additionally supplying the fluid in a specific section of the discharge flow path unit 180.

As described above, since the fluid is sucked along the flow path wound in the clockwise direction from the circumference of the housing 110 to the receiving part 120 side, the fluid is compressed by the effect of Coriolis to improve the suction performance of the fluid. . In addition, since the noise reduction unit 185 communicates with the suction flow path unit 150, as the external fluid is additionally introduced into the suction flow path unit 150, the flow noise of the fluid may be reduced.

In addition, since the fluid compressed in the accommodating part 120 is discharged along a flow path wound in a clockwise direction toward the circumferential side of the housing 110, the fluid discharge performance can be improved as the fluid is expanded by the effect of Coriolis. have. In addition, since the noise reduction unit 185 communicates with the discharge flow path unit 180, as the external fluid is additionally introduced into the discharge flow path unit 180, the discharge noise of the fluid may be reduced.

Next, a blower according to another embodiment of the present invention will be described. Since another embodiment of the blower apparatus is substantially the same as the above-described embodiment except for the configuration of the fan apparatus, the configuration of the fan apparatus will be described below and the same configuration will be given with the same reference number.

8 is a cross-sectional view showing a blower according to another embodiment of the present invention, Figure 9 is a partially enlarged view showing a blower according to another embodiment of the present invention.

8 and 9, the fan device 160 includes a driving fan 161 and a non-powered fan 165.

The driving fan 161 is rotated in the same direction as the direction in which the suction flow path 150 converges from the circumference of the housing 110 to the receiving portion 120 side. For example, when the suction flow path 150 is bent to converge in the clockwise direction from the circumference of the housing 110 toward the receiving portion 120 (see FIG. 5), the driving fan 161 is clockwise. Is rotated. In addition, when the suction flow path 150 is bent to converge in the counterclockwise direction toward the receiving portion 120 from the circumference of the housing 110 (see FIG. 7), the driving fan 161 is counterclockwise Is rotated. The fan device 160 includes a motor 161a, a hub rotated by the motor 161a, and a driving blade 161c disposed radially to the hub.

The drive fan 161 includes a motor 161a, a drive hub 161b, and a plurality of drive blades 161c. The drive hub 161b is rotatably coupled to the rotating shaft of the motor 161a, and the drive blade 161c is disposed radially around the drive hub 161b.

The non-powered fan 165 is disposed on the suction side and the discharge side of the drive fan 161. The non-powered fan 165 is rotated by the flow pressure of the fluid without a separate motor 161a. The non-powered fan 165 disposed on the fluid inlet side of the driving fan 161 serves to buffer the fluid discharged through the inflow passage part. The non-powered fan 165 disposed on the fluid discharge side of the driving fan 161 serves to buffer the fluid compressed in the accommodation part 120 to be smoothly discharged to the discharge flow path part 180. Accordingly, the non-powered fan 165 allows the fluid to flow smoothly at the suction side and the discharge side of the drive fan 161, thereby ensuring fluidity of the fluid and reducing noise.

The non-powered fan 165 is disposed in plural along the circumference of the driving fan 161. In this case, since the non-powered fan 165 is arranged to surround the circumferential direction of the driving fan 161, the non-powered fan 165 may buffer the fluid flowing in and out in the circumferential direction of the driving fan 161 and may smoothly change the flow velocity of the fluid. .

The non-powered fan 165 includes a non-powered hub 165b and a plurality of non-powered blades 165c. The non-powered hub 165b is rotatably coupled to the fixed shaft 165a of the receiving portion 120, and the non-powered blade 165c is disposed radially around the non-powered hub 165b.

10 is a front view showing a drive blade of the drive fan in the blower according to another embodiment of the present invention, Figure 11 is a front view showing a non-powered fan non-powered blade in the blower according to another embodiment of the present invention.

10 and 11, the driving blade 161c is formed at the driving hub 161b at a constant pitch angle θ1 (see FIG. 10). Here, the pitch angle θ1 of the driving blade 161c means an angle at which the driving blade 161c is inclined with respect to an axis perpendicular to the rotation axis of the driving hub 161b.

The pitch angle θ2 of the non-powered blade 165c is formed at a constant angle on the non-powered hub 165b (see FIG. 11).

The pitch angle θ1 of the driving blade 161c may be smaller than the pitch angle θ2 of the non-powered blade 165c. For example, the pitch angle θ1 of the drive blade 161c is formed in the range of 3-5 °. In addition, the pitch angle θ2 of the non-powered blade 165c is formed in the range of 8-12 degrees.

The non-powered fan 165 is disposed between the inflow flow path part and the drive fan 161, and between the drive fan 161 and the discharge flow path part 180, respectively, and the pitch angle θ2 of the non-powered blade 165c is the drive blade. Since the pitch angle θ1 of 161c is relatively larger, the flow angle of the body may be gently changed while the fluid sequentially passes through the non-powered blade 165c and the driving blade 161c. Thus, noise can be reduced by preventing the flow angle of the fluid from changing drastically.

The operation of the blower according to another embodiment of the present invention configured as described above will be described.

Referring to FIG. 12, the fluid flows through the inflow passage as the motor 161a is rotated. The fluid flows along the inlet flow path and is compressed by the Coriolis effect. The fluid of the inflow passage part flows into the receiving part 120 in a compressed state.

The compressed fluid exerts a flow pressure on the non-powered blade 165c disposed between the inflow passage portion and the drive fan 161. At this time, as the non-powered fan 165 is rotated, the flow angle of the compressed fluid is gently changed. In addition, since the pitch angle θ2 of the non-powered blade 165c is larger than the pitch angle θ1 of the drive blade 161c, the flow angle of the compressed fluid is smoother and smoother as the non-powered blade 165c is rotated. do. Compressed fluid via the non-powered fan 165 flows into the drive fan 161.

The drive blade 161c is rotated by the rotation of the motor 161a. The driving blade 161c compresses the fluid while forcibly flowing the fluid toward the discharge passage part 180. At this time, one side surface (lower side surface in FIG. 9) of the drive blade 161c is a pressurized surface for pressurizing the fluid.

The fluid discharged from the driving fan 161 flows into the non-powered fan 165 disposed between the driving fan 161 and the discharge flow path part 180. Since the pitch angle θ2 of the non-powered blade 165c is larger than the pitch angle θ1 of the drive blade 161c, the flow angle of the compressed fluid is smoother and smoother as the non-powered blade 165c is rotated.

The fluid via the non-powered blade 165c is discharged to the discharge flow path part 180. Since the discharge flow path unit 180 flows the fluid by the Coriolis effect, the fluid is gradually expanded while flowing along the discharge flow path unit 180 and then discharged to the outside of the housing 110. Thus, the noise of the fluid can be reduced.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

The present invention relates to a blower apparatus capable of improving the flow performance of air, comprising: a housing in which a receiving portion is formed; A plurality of suction passage portions extending round from the accommodation portion toward the circumference of the housing; A fan device disposed in the accommodation part to suck fluid through the suction flow path part; And a plurality of discharge flow path portions extending round from the accommodation portion to the circumferential side of the housing and discharging the air sucked by the fan apparatus to the outside.

Claims

A housing in which the accommodation portion is formed;

A plurality of suction passage portions extending round from the accommodation portion toward the circumference of the housing;

A fan device disposed in the accommodation part to suck fluid through the suction flow path part; And

A plurality of discharge passages extending round from the accommodation portion toward the circumference of the housing and discharging the air sucked by the fan apparatus to the outside;

The fan device,

A driving fan rotated by a motor in the same direction as the direction in which the suction flow path converges from the circumference of the housing to the accommodation portion; And

And a non-powered fan disposed on the suction side and the discharge side of the drive fan and rotated by the flow pressure of the fluid.
The method of claim 1,

And the suction flow path part is formed to converge in a rounded direction clockwise or counterclockwise from the circumference of the housing toward the accommodation part.
The method of claim 2,

And the discharge flow path part is rounded in a direction opposite to the suction flow path part with respect to the accommodation part.
The method of claim 3, wherein

The suction passage portion has a form that narrows toward the receiving portion side,

And the discharge passage portion has a form that is widened toward the circumferential side of the housing from the accommodation portion.
The method of claim 1,

And a noise reduction part communicating with the suction flow path part or the discharge flow path part and opening to allow the external fluid to flow into the suction flow path part or the discharge flow path part.
The method of claim 1,

The drive fan includes a plurality of drive blades disposed radially to the drive hub,

The non-powered fan includes a plurality of non-powered blades radially disposed in the non-powered hub,

And a pitch angle of the driving blade is smaller than that of the non-powered blade.