KR20150030697A - Oblique flow fan, oblique flow blower and air conditioning indoor unit having same - Google Patents

Oblique flow fan, oblique flow blower and air conditioning indoor unit having same Download PDF

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Publication number
KR20150030697A
KR20150030697A KR20157000183A KR20157000183A KR20150030697A KR 20150030697 A KR20150030697 A KR 20150030697A KR 20157000183 A KR20157000183 A KR 20157000183A KR 20157000183 A KR20157000183 A KR 20157000183A KR 20150030697 A KR20150030697 A KR 20150030697A
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KR
South Korea
Prior art keywords
wind
blade
fan
wheel hub
wind guide
Prior art date
Application number
KR20157000183A
Other languages
Korean (ko)
Inventor
슈찌에 카이
웬도우 리
지 장
보 주
양 류
Original Assignee
미디어 그룹 코 엘티디
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN2012101873025A external-priority patent/CN102705910A/en
Priority claimed from CN 201220268483 external-priority patent/CN202734057U/en
Priority claimed from CN201220415824.1U external-priority patent/CN202883468U/en
Priority claimed from CN2012102988100A external-priority patent/CN102852854A/en
Application filed by 미디어 그룹 코 엘티디 filed Critical 미디어 그룹 코 엘티디
Publication of KR20150030697A publication Critical patent/KR20150030697A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans

Abstract

Wherein the fan hub comprises a wheel hub (100) and a plurality of blades (200), the wheel hub (100) has a horn or spherical wind guiding surface, and the wind guiding surface The external size toward the top gradually increases. The blade 200 includes a blade root portion, a blade tip portion, a wind inflow end and a wind outflow end, wherein the diameter of the rotation circumference in which the wind inflow end is located in the blade root portion and the diameter of the rotation circumference in which the wind inflow end Is a wheel hub ratio of the wind inflow end, and the ratio of the diameter of the rotation circumference where the wind outflow end is located at the blade root portion to the diameter of the rotation circumference where the wind outflow end is located at the blade tip portion, And the wheel hub ratio of the wind inflow end is smaller than the wheel hub ratio of the wind outflow end. The present invention also provides an air conditioner indoor unit equipped with the above-mentioned fans.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor fan, an air blower, and an air conditioner indoor unit having the fan,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of cooling technology, and more particularly, to a multistage fan, a multistage blower and an air conditioner indoor unit having the same.

A duct system of a conventional air conditioner indoor unit mainly uses a centrifugal fan, a volute casing and a centrifugal fan are installed at the lower part of the air conditioner cavity, a heat exchanger is installed at an upper part of the air conditioner cavity and mounted obliquely, The wind inlet and the wind inlet are located immediately before or in front of the case, respectively, and the wind outlet is positioned in the room immediately before the case. The lower blower duct system is intended to ventilate toward the upper heat exchanger for quick heat exchange.

In addition, the purpose of the heat pump is to place the motor, the centrifugal fan and the bolt casing in the upper part of the air conditioner cavity, to install the heat exchanger in the lower part of the air conditioner cavity and to allow the wind inhaled by the upper duct system to pass through the lower heat exchanger. Some consoles have some air conditioners.

Also, the duct system of some blowers uses a cross flow fan, the heat exchanger is located behind the cross flow fan, and the wind exit is located at the middle or both sides of the air conditioner. Through the high-speed rotation of the cross-flow fan, the air behind the main body flows through the heat exchanger and is transported.

However, although the centrifugal fan or the cross-flow fan is applied to the console type air conditioner, the centrifugal force generated when the blade rotates can send the wind to a relatively long distance and the blowing distance is long. However, The blowing efficiency is lowered because the amount of air to be blown out is small because blowing is required at a relatively large angle and the air loss is large.

It is an object of the present invention to solve at least one of the technical problems existing in the prior art.

In view of the foregoing, the present invention provides a fan for an air conditioner having a long blowing distance, a large blowing amount, and a high blowing efficiency.

Further, the present invention provides an air conditioner indoor unit having the above-mentioned conventional fan, which is simple in structure, reasonable, and good in blowing effect.

According to a first aspect of the present invention, there is provided a whirlpool fan for an air conditioner indoor unit. Wherein the wind fan has a wind guide surface of a conical surface or a spherical surface, and the wind guide surface has a wheel hub whose outer size gradually increases from a bottom end to an upper end; And a plurality of blades mounted on the wind guide surface, wherein each of the blades includes a blade root portion connected to the wind guide surface, a blade tip portion remote from the wheel hub, And a wind-out end near the upper end of the wind guide surface, wherein the diameter of the rotation circumference in which the wind-in end is located in the blade root portion and the diameter of the rotation circumference in which the wind- Is a wheel hub ratio of the wind inflow end, and a ratio value of the diameter of the rotation circumference where the wind outflow end is located at the blade root portion and the diameter of the rotation circumference where the wind outflow end is located at the blade tip portion, Wherein the wheel hub ratio of the inflow end is smaller than the wheel hub ratio of the wind outflow end .

The fan for an air conditioner according to an embodiment of the present invention is applied particularly to a vertical air conditioner indoor unit. The outer diameter of the wind wheel of the extruder fan has a wind guide surface and the outer diameter of the wind guide surface gradually increases from the lower end to the upper end, and the wheel hub ratio of the wind inflow end is smaller than the wheel hub ratio of the wind outflow end. When the wheel hub rotates the blade in a leading direction, the wind inflow end has a relatively strong lifting force catching the airflow, and the wind outflow end has relatively strong centrifugal force to discharge the captured airflow. In other words, the fans have a relatively strong centrifugal force and can discharge the air to a relatively long distance, so that not only the blowing distance is long but also the axial direction lift is generated, and the air is forcibly moved to suck a large amount of air into the air conditioner Since the wind can be fed along the side of the wheel hub in an oblique direction, the air loss is small and the blowing efficiency is high. Accordingly, the extruder according to the present invention has a feature that the wind is introduced in the axial direction and the wind is fed in the oblique direction, and the blowing distance is ensured and the blowing amount is increased and the blowing efficiency is improved.

According to an embodiment of the present invention, the wheel hub ratio of the wind inflow end is 0.15 to 0.45.

According to an embodiment of the present invention, the wheel hub ratio of the wind outflow end is 0.55 to 0.85.

According to an embodiment of the present invention, the conical surface formed by the connection of the wind inflow end and the wind outflow end of the blade root portion around the axis of the turntable fan and the axis of the turntable fan is 35 to 55 to be.

According to an embodiment of the present invention, a connection line between the wind inflow end and the wind outflow end of the blade root portion, and a connection line between the wind inflow end and the wind outflow end of the blade tip portion, The narrow angle is from 0 to 30 degrees.

According to an embodiment of the present invention, the narrow angle between the connecting line of the wind inflow end and the wind outflow end of the blade section of the blade and the rotation direction of the wind inflow end is an inclination angle of the blade, But gradually becomes smaller.

According to an embodiment of the present invention, the inclination angle of the blade root portion is 38 ° to 55 °.

According to an embodiment of the present invention, the inclination angle of the blade tip portion is 18 to 35 degrees.

According to an embodiment of the present invention, the inclination angle of the blade root portion is 44.2 DEG and the inclination angle of the blade tip portion is 23 DEG.

According to an embodiment of the present invention, the cooperative angle between the discharge direction and the rotational direction of the airflow at the wind outflow end is an outlet mounting angle of the blade when the fans are rotating, The tip gradually grows as it goes down.

According to an embodiment of the present invention, the exit mounting angle of the blade root portion is 90 to 135 degrees.

According to one embodiment of the present invention, the exit mounting angle of the blade tip is 105 to 150 degrees.

According to an embodiment of the present invention, the outlet mounting angle of the blade root portion is 104 占 and the outlet mounting angle of the blade tip portion is 125.7 占.

According to one embodiment of the present invention, the number of blades is 5 to 9.

According to a second aspect of the present invention, there is provided a console-type air conditioner, wherein the air conditioner includes a case having a wind inlet and a wind outlet and having a duct internally connected to the wind inlet and the wind outlet, And a multistage blower installed in the duct and having a multistage fan according to the embodiment of the present invention.

The air conditioner indoor unit according to the present invention is provided with a sultry fan, and the sultry fan is particularly applied to a vertical air conditioner indoor unit. The outer diameter of the wind wheel of the extruder fan has a wind guide surface and the outer diameter of the wind guide surface gradually increases from the lower end to the upper end, and the wheel hub ratio of the wind inflow end is smaller than the wheel hub ratio of the wind outflow end. When the wheel hub rotates the blade in a leading direction, the wind inflow end has a relatively strong lifting force catching the airflow, and the wind outflow end has relatively strong centrifugal force to discharge the captured airflow. In other words, the mixed-flow fan has a relatively strong centrifugal force and can send the air to a relatively long distance, so that not only the blowing distance is long but also the axial direction lift is generated and the air is forcibly moved to suck a large amount of air into the air conditioner, Since the wind can be sent in the oblique direction along the side of the hub, the air loss is small and the blowing efficiency is high. Accordingly, the air conditioner indoor unit according to the present invention secures a blowing distance, increases the blowing amount, and improves blowing efficiency.

According to an embodiment of the present invention, the air conditioner indoor unit further includes a wind guiding member, the wind guiding member is connected to the inner wall of the duct, and the wind guiding member includes a wind guiding member Wherein the wind fan is located inside the wind guide passage.

According to an embodiment of the present invention, a gap is provided between the wind guide member and the inner wall of the duct, and a noise absorbing layer is filled in the gap.

According to an embodiment of the present invention, a wind wheel cover is provided between the end surfaces of the blades to surround the blades.

According to an embodiment of the present invention, an inlet wind guide ring is installed at the lower end of the wind guide surface of the extruder.

According to an embodiment of the present invention, a diffuser cone coaxial with the wheel hub is installed on a leeward side of the turbulence fan, the diffuser cone has a large diameter at the air inlet side, It is a cone large structure with a small diameter.

According to an embodiment of the present invention, the diameter of the wind guide passage of the wind guide member corresponding to the diffuser cone gradually increases from bottom to top.

According to an embodiment of the present invention, a fixed wind guide wheel is installed on the windward side of the wind turbine, and a fixed wind guide blade is installed on the fixed wind guide wheel to reduce the rotational direction of air.

According to an embodiment of the present invention, a diffuser cone and / or a fixed wind guide wheel coaxial with the wheel hub is installed on the downwind side of the primary fan, and the diffuser cone has a large diameter at the wind inlet side and a small diameter at the air discharge side The fixed wind guide wheel is provided with a fixed wind guide blade for reducing the rotational direction of air.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned through practice of the invention.

The above and / or additional aspects and advantages of the present invention will become apparent from the following description of the embodiments with reference to the accompanying drawings. here,
1 is a front view of a conventional fan according to an embodiment of the present invention,
FIG. 2 is a schematic diagram of a three-dimensional structure of a conventional fan according to an embodiment of the present invention,
3 is a schematic view of a meridian surface of a current fan according to an embodiment of the present invention,
FIG. 4 is a schematic cross-sectional view of a blade of a conventional fan according to an embodiment of the present invention,
Fig. 5 is a schematic diagram of the flat deployment of the blade profile of a section of the blade from the root of the blade to the blade tip in a turbo fan according to the invention.
6 is a schematic diagram of a three-dimensional structure of an air conditioner indoor unit according to an embodiment of the present invention,
7 is a schematic cross-sectional structural view of a front part of an air conditioner indoor unit according to an embodiment of the present invention,
Fig. 8 is a schematic enlarged schematic view of part A in Fig. 7,
FIG. 9 is a schematic view showing the three-dimensional structure of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention,
FIG. 10 is a schematic view of a conventional air blower of an air conditioner indoor unit according to an embodiment of the present invention, blowing along a rotating tangential direction of an impeller,
FIG. 11 is a schematic view of a conventional air blower of an air conditioner indoor unit according to an embodiment of the present invention,
12 is a schematic view of a cross-sectional structure of a front part of an air conditioner indoor unit according to an embodiment of the present invention.
Fig. 13 shows a schematic enlarged structure of part C in Fig. 12,
FIG. 14 is a schematic cross-sectional view of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention,
FIG. 15 is a schematic cross-sectional view of a three-dimensional part of an air conditioner indoor unit according to an embodiment of the present invention,
16 is a schematic diagram of a three-dimensional structure of an air conditioner indoor unit according to an embodiment of the present invention,
Fig. 17 shows a schematic front view of Fig. 16,
18 is a schematic sectional view of a partial cross-sectional structure of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention,
19 is a schematic cross-sectional structural view of a front part of an air conditioner indoor unit according to an embodiment of the present invention,
Fig. 20 shows a schematic enlarged structure of part E in Fig. 19,
FIG. 21 is a schematic structural view of an air conditioner indoor unit according to an embodiment of the present invention,
22 is a schematic view of a partial sectional structure of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention,
23 is a three-dimensional schematic view of a fixed wind guide wheel of an air conditioner indoor unit according to an embodiment of the present invention,
Fig. 24 is an enlarged cross-sectional schematic view of the DD line in Fig. 21,
25 is a schematic structural view of an air conditioner indoor unit according to an embodiment of the present invention,
26 shows a mounting view of an associated assembly of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention,
27 is an exploded view of a related assembly of a humidifier blower of an air conditioner indoor unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. Examples of the above embodiments are shown in the figures, wherein like or similar reference numerals represent the same or similar parts or parts having the same or similar functions. The embodiments described with reference to the drawings are intended to be illustrative and interpreting the present invention and should not be construed as limiting the invention.

In the description of the present invention, the terms "center", "vertical", "horizontal", "above", "below", "front", "back", " The orientation or positional relationships referred to by the terms "upper," " lower, "" inner, "and" outer, " and the like are orientation or positional relationships depicted on the basis of the drawings and are merely illustrative of the invention Does not imply or imply that the so-called device or part should have a particular orientation or be constructed and operated with a particular orientation, and thus should not be construed as a limitation to the present invention. Also, the terms "first "," second "are for purposes of illustration only and should not be construed to imply or imply relative importance.

In the description of the present invention, the terms "mounting "," interconnecting ", and "connecting" should be understood in a broad sense unless otherwise clearly defined and defined. For example, be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or indirectly through an intermediate medium It can also be an internal connection between two parts. For those of ordinary skill in the art, the specific meanings of the terms used in the present invention may be understood in specific cases.

As shown in FIGS. 1 to 3, the fan for an air conditioner according to the embodiment of the present invention includes a wheel hub 100 and a plurality of blades 200.

Specifically, the wheel hub 100 may have a conical or spherical wind guiding surface 101, and the outer size of the wind guiding surface 101 from the lower end to the upper end gradually increases. The wheel hub 100 may be driven and rotated by a motor and the blade 200 may be integrally installed with the wheel hub 100 and detachably connected to the surface of the wheel hub 100. The wheel hub 100 leads and rotates the blade 200 during rotation. The wheel hub 100 has a conical or hemispherical shape. One end having a larger diameter is located at the upper end, and the other end having a smaller diameter is located at the lower end. In the blade 200, the side connected to the wheel hub 100 is the blade root portion 210, and the side remote from the wheel hub 100 is the blade tip portion 220. One end near the lower end of the wheel hub 100 is the wind inflow end 240 and one end near the upper end of the wheel hub 100 is the wind outflow end 230 in the blade 200. In other words, the lower end shown in FIG. 3 is the wind inflow end 240 and the upper end is the wind outflow end 230. When the blade 200 rotates around the axis of the wheel hub 100 the diameter of the rotating circumference in which the wind inflow end 240 is located in the blade root portion 210 is d1 and the diameter of the blade tip portion 220 The diameter of the rotating circumference where the wind inflow end 240 is located is D1, and d1 / D1 is the wheel hub ratio of the wind inflow end 240. The diameter of the rotating circumference in which the wind outflow end 230 is located in the blade root portion 210 is d2 and the diameter of the rotation circumference in which the wind outflow end 230 is located in the blade tip portion 220 is D2 and d2 / Is the wheel hub ratio of the wind outflow stage 230. Here, the wheel hub ratio of the wind inflow end 240 is smaller than the wheel hub ratio of the wind outflow end 230.

The fan 10 for an air conditioner according to an embodiment of the present invention is applied particularly to a vertical air conditioner indoor unit. The wheel hub 100 of the extruder fan 10 has the wind guide surface 101 and the outer size of the wind guide surface 101 from the lower end to the upper end gradually increases and the wheel hub ratio of the wind inflow end 240 When the wheel hub 100 leads the blade 200 in a forward direction, the wind inflow end 240 has a relatively strong lift for catching the airflow, The outlet 230 has a relatively strong centrifugal force to discharge the entrained airflow. In other words, the fans have a relatively strong centrifugal force, so that the air can be discharged to a relatively long distance, so that not only the blowing distance is long but also the axial direction lift is generated, and the air is forcibly moved to suck a large amount of air into the air conditioner The wind can be transmitted in an oblique direction along the outer surface of the wheel hub 100, so that the air loss is small and the blowing efficiency is high. Accordingly, the extruder according to the present invention has a feature that the wind is introduced in the axial direction and the wind is blown in the oblique direction, and the blowing distance is ensured, the blowing amount is increased, and the blowing efficiency is improved.

Further, according to an embodiment of the present invention, the wheel hub ratio of the wind inflow end 240 may be 0.15 to 0.45. According to one embodiment of the present invention, the wheel hub ratio of the wind spout end 230 may be 0.55 to 0.85.

When the wheel hub ratio of the wind inflow end and the wind outflow end falls in at least one of the above parameter ranges, the axial lift and centrifugal force of the slave fan can be balanced as much as possible and the sultiplex fan has sufficient centrifugal force The axial lift can be further increased.

Although the centrifugal fan of the related art has a centrifugal force generated by the centrifugal fan, the blowing distance of the air conditioner can be increased by sending the wind to a relatively long distance. However, since the amount of air to be sucked is small, And therefore, the amount of air to be blown is relatively small and the blowing efficiency is low. The diameter of the wheel hub 100 in which the wind inflow end 240 of the blade 200 is located is smaller than the diameter of the wind inflow end 230 of the wheel hub 100. In this case, And the wheel hub ratio of the wind inflow end 240 is smaller than the wheel hub ratio of the wind outflow end 230. In other words, Accordingly, when the wheel hub 100 is rotated by leading the blade 200, the extruder fan has a relatively strong centrifugal force and can send air to a long distance, thereby not only having a long blowing distance but also generating an axial lift, So that a large amount of air can be sucked into the air conditioner, and then the wind can be fed in an oblique direction along the inclined plane of the cone of the wheel hub 100, so that the air loss is small and the blowing efficiency is high. Therefore, the hydrodynamic fan 10 according to the present invention has a feature that the wind is introduced in the axial direction and the wind is fed in the oblique direction, and the blowing distance is ensured and the blowing amount is increased and the blowing efficiency is improved. Therefore, the hydrodynamic fan 10 according to the present invention not only has the advantage that the flow volume of the axial flow fan is large, but also has a good compression resistance characteristic of the centrifugal fan.

3, the distance between the impeller 200 and the wheel hub 100 in the blade root portion 210 of the impeller 200 in the present embodiment is larger than that of the impeller 200 in the connecting direction between the wind inflow end 240 and the wind outflow end 230, The narrowing angle between the connecting line at the upper and lower ends of the connecting portion and the axis of the wheel hub 100 is 35 to 55 degrees, that is,? 1 in the figure. This angle actually assigns the centrifugal direction movement method and the axial movement method in the air conditioner fan 10 to the air conditioner. The centrifugal motion is mainly converted into the pressure potential energy so as to secure the blowing distance of the air conditioner and the axial movement to secure a sufficiently large air volume to further secure the blowing efficiency. Therefore, the angle range further equilibrates the blowing amount of the extruding fan 10 and the blowing distance. The distance between the connection line between the wind inflow end 240 and the wind outflow end 230 of the blade root portion 210 and the connection line between the wind inflow end 240 and the wind outflow end 230 of the blade tip portion 220, Is 0 [deg.] To 30 [deg.], That is, [theta] 2 in the figure. The purpose of this design is to form a special necking in the working region of the impeller 200 to effectively accelerate the flow of air in the working region of the impeller 200 to suppress vortex formation and further improve fan efficiency, Thereby reducing the eddy noise in the air.

The number of the impellers 200 of this embodiment is five to nine, and may be distributed around the conical surface of the wheel hub 100 and equidistant or equidistant. If the number of the blades 200 is too small, a sufficient amount of air and a blowing distance can not be ensured. If the number of the blades 200 is too large, an effective flow passage area becomes small due to a wall surface boundary layer effect and affects efficiency. Therefore, 5 to 9 are comparatively ideal quantities, so that not only blowing efficiency can be ensured but also noise is not generated too much. In addition, the structural limitations of the air conditioner, the demand for the air volume, the wind pressure, the noise, and the motor rotation frequency of the air conditioner (the indoor constant speed motor generally uses a single-phase AC asynchronous motor, 6 and 8 poles, and the synchronous rotational speeds are 1500 rpm, 1000 rpm and 750 rpm, respectively), the diameter of the extruded fan 10 of this embodiment is set to 250 to 400 mm, the rated working rotational speed of the fan is set to 500 rpm 1500 rpm.

4 is a schematic view of a blade section of a blade of a conventional fan according to the present invention. In order to prevent low energy fluids from accumulating in the blade root 210 and to further improve the blowing efficiency of the fan and reduce noise, the blade 200 of this embodiment is not a flat, but rather a space curved and twisted shape do. Specifically, in the present embodiment, the inclined angle of the blade is gradually reduced from the blade root portion 210 to the blade tip portion 220, and the exit mounting angle of the blade is increased from the blade root portion 210 to the blade tip portion 220, Lt; RTI ID = 0.0 > 220 < / RTI > The direction in which the blade 200 surrounds and rotates when the extruded fan 10 is operating normally is the direction in which the wind inlet end 240 is in front and the wind outlet end 230 is in the rear, And the surface on which the airflow is in contact with the front is the air-surface 260. The airflow is introduced from the wind inflow end 240 to the wind outflow end 230 inclined along the airfoil 260 and discharged from the wind outflow end 230 to the air conditioner internal cavity by centrifugal force.

4, the connection line between the wind inflow end 240 and the wind outflow end 230 in the blade section of the blade 200 is a tilt angle of the blade with respect to the rotation direction of the wind inflow end, Is gradually reduced from the blade root portion to the blade tip portion.

In other words, the cross section of the blade 200 taken away from the side of the wheel hub 100 in the radial direction is the blade section of the blade 200. The wing cross section can be understood as follows: Assuming that the side of the wheel hub 100 is unfolded to form one plane, all of the blades 200 located above the wheel hub 100 are all located on one side of the plane Lt; / RTI > The cutting of the blade 200 in the radial direction from the side of the wheel hub 100 can be understood as follows: The cutting blade section is parallel to the plane, that is, the side of the wheel hub 100 is developed in one plane All the blade sections of all the blades 200 are parallel to the plane. 4, the left end of the blade section may be the wind outflow end 230, and the right end may be the wind inflow end 240. In FIG. 4, one curve 250 on the upper side is a projection curve of the windward surface 260, and a current line 251 between the two curves is a connection line between the windward end 240 and the windout end 230. The arrow of the wind inflow end 240 indicates the rotation direction of the wind inflow end 240 and the narrow angle between the tangent of the rotation direction and the current line 251 is the inclination angle of the blade 200, The inclined downward arrow in the wind outflow end 230 is the projection curve of the airfoil 260 and the tangential direction of the wind outflow end 230, i.e., the discharge direction of the airflow, and the obliquely upward arrow indicates the wind outflow end 230 , And the tangent line thereof is parallel to the end face of the wheel hub 100. As shown in Fig. Thus, the coarse angle between the two arrows is the exit mounting angle of the blade 200, i.e., the angle in the figure. The inclination angle of the blade gradually decreases from the blade root portion to the blade tip portion, and the exit mounting angle gradually increases from the blade root portion to the blade tip portion.

Further, it is preferable that the inclination angle of the blade root portion 210 is 38 ° to 55 °, and the exit mounting angle is preferably 90 ° to 135 °. The inclination angle of the blade tip portion 220 is preferably from 18 to 35 degrees, and the exit mounting angle is preferably from 105 to 150 degrees. The mixed-flow fan formed within the parameter range can not only generate a strong axial lift but also generate a relatively strong centrifugal force, and the airflow is not deposited on the root of the blade, Do not.

The following table shows the inclination angles and mounting angles of the positions of several blade sections cut from the blade root portion 210 of the blade to the blade tip portion 220 in the current fan of the present embodiment, The root portion 210 has an inclination angle of 44.2 °, an exit mounting angle of 104 °, a cross section of 100% is a blade tip portion 220, an inclination angle of 23 °, and an exit mounting angle of 125.7 °.

Figure pct00001

Fig. 5 is a plan view of a wing shape of each wing section, wherein the direction indicated by the arrows is the air flow direction.

The blade configuration of this embodiment is generally curved inwardly as the blade of the wind inflow end progresses from the blade root portion to the blade tip portion and the blade of the wind outflow end gradually expands outward from the blade root portion to the blade tip portion. Therefore, when the blades 200 are bent and twisted in this embodiment, a strong axial lift is generated to introduce air into the air conditioner cavity from the outside to generate a rapid airflow, To the rotating space of the blade 200. [ The inclination angle from the blade root portion 210 to the blade tip portion 220 gradually decreases and the exit mounting angle from the blade root portion 210 to the blade tip portion 220 gradually increases, So that the airflow can be captured very easily to allow the airflow to rapidly ascend along the wind surface 260 to the wind outflow end 230 due to the continuous lifting action of the fan. Since the blade 200 gradually expands outward from the wind inflow end 240 to the wind outflow end 230 so that the airflow is not deposited on the blade root portion 210 in the course of ascending, It does not cause airflow loss. In addition, the airflow velocity is reduced due to the obstruction of the accumulated airflow, and thus, a large amount of noise is not generated. Finally, a large amount of airflow is sprinkled from the wind spout end 230 by the blades 200 under the strong centrifugal force of the fan. Accordingly, in the present embodiment, the curved and twisted blade 200 minimizes the accumulation of low energy fluid in the blade root 210, thereby further improving the blowing efficiency of the fan and reducing the noise.

6 to 11, the air conditioner indoor unit according to the embodiment of the present invention includes a case 2, a heat exchanger (not shown), and a humidifier 4.

Specifically, a wind inlet (not shown) and a wind outlet 3 are formed in the case 2, and ducts communicating with the wind inlet and the wind outlet 3 are formed in the case 2, 4) can be installed inside the duct. The extruder blower 4 is provided with the extruder fan 10 according to the embodiment of the present invention.

The air conditioner indoor unit according to an embodiment of the present invention includes a sultana fan 10, which is particularly applied to a vertical air conditioner indoor unit. The wheel hub 100 of the extruder fan 10 has the wind guide surface 101 and the outer size of the wind guide surface 101 from the lower end to the upper end gradually increases and the wheel hub ratio of the wind inflow end 240 increases When the wheel hub 100 is caused to rotate by leading the blade 200, the wind inflow end 240 has a relatively strong lift for catching the airflow, The stage 230 has a relatively strong centrifugal force to discharge the entrained airflow. In other words, the fans have a relatively strong centrifugal force and can send the air to a relatively long distance, so that not only the blowing distance is long but also the axial direction lift is generated, and the air is forcibly moved to suck a large amount of air into the air conditioner. Since the wind can be fed in the oblique direction along the side surface of the wheel hub 100, the loss of air volume is small and the blowing efficiency is high. Accordingly, the air conditioner indoor unit according to the present invention secures a blowing distance, increases the blowing amount, and improves blowing efficiency.

It should be noted that a duct through which air communicated from the wind inlet to the wind outlet 3 is provided inside the case 2, and a duct blower 4 is provided in the duct. The current blower 4 is also referred to as a mixed blower, and the current blower uses the current fan 10 in the embodiment of the present invention. As a result, the blowing direction of the extruder blower 4 includes a quantity Component along the axial direction of the motor and a quantity along the tangential direction of the rotational direction of the impeller. The blowing amount of the extruder blower 4 is smaller than that of the axial blower and larger than that of the centrifugal blower. The static pressure of the extruder blower 4 is larger than that of the axial flow blower and smaller than that of the centrifugal blower. It is determined that the characteristics of the extruder blower 4 itself have a higher blowing air pressure and a farther blower distance than the conventional case in which the axial blower drive system is applied.

9, 10 and 11, when the multistage blower 4 is driven by the motor 43, the motor 43 and the motor shaft 44, the motor 43 for driving and rotating the current wheel 41, And a motor shaft 44 connecting the motor 43 and the turntable wheel 41. It can be seen that the motor 43 drives the turntable wheel 41 to rotate the middle axis line 99 by centrifugal force . The turbulence wheel 41 includes a wheel hub 100 having a small diameter on the air inlet side and a large diameter on the exhaust side of the air and a plurality of blades 200 installed on the airfoil surface of the wheel hub 100. When the motor 43 first rotates the turntable wheel 41, the blade 200 pushes the air upward and pushes the air along the tangential direction in which the blade 200 rotates. In the present embodiment, the air conditioner indoor unit 1 is of a console type and uses a model blowing fan 4 from the upper four sides. Therefore, it is possible to overcome the flow resistance in the duct by increasing the blowing static pressure (including the flow resistance in the wind inlet, wind inflow filter net, heat exchanger, volute case, wind outlet and wind guide blade etc.) And also has a relatively long duct, so that air can be blown to a relatively large distance. In addition, the direction of the airflow at the air hole side is not perpendicular to the air outlet but follows the direction in which the air current blower 4 rotates, and includes the amount in the tangential direction. As a result, the four-sided airflow effect can be further improved, there is no blind spot of air blast, and the air blowing comfort is improved.

12 to 17, according to an embodiment of the present invention, the air conditioner indoor unit 1 further includes a wind guiding member 5, the wind guiding member 5 is connected to the inner wall of the duct, The wind guide member 5 has a wind guide passage penetrating in the vertical direction, and the wind fan 10 can be positioned inside the wind guide passage. 11 and 12, the wind guide member 5 is provided on the inner wall surface corresponding to the wheel hub 100 and the blade 200 of the extruder blower 4, Is fixed to the inner wall surface of the case (2) by the guide member connecting portion (17). Since the wind guide member 5 itself has a certain strength and also has a relatively high processing precision and surface smoothness of the inner surface of the wind guide member 5, it is advantageous to match with the rotating blade 200, The resistance of the air can be reduced.

8, a gap 7 is formed between the wind guiding member 5 and the inner wall surface of the case 2, and the air heated or heated by the heat exchanger is guided by the air guiding member 5, The gap 7 can reduce outwardly directed thermal conduction. It is possible to reduce the formation of dew drops on the surface of the case 2, particularly in the cooling operation state, and to reduce the noise of the motor and the airflow to propagate to the outside. The gap 7 between the bolus casing 5 and the inner wall surface of the case 2 can be filled with a heat insulating or sound absorbing layer in order to further reduce heat conduction and noise propagation.

Referring to FIGS. 14 and 15, a wind wheel cover 8 connected to each blade 200 is further provided on the outside of the blade 200. That is, a wind wheel cover 8 surrounding the blades is provided between the end surfaces of the blades 200. The wind wheel cover 8 functions to enhance the structural strength of each blade 200 and to gather the airflow introduced into the wind inlet 15 of the multistage blower 4, Lt; / RTI > increases the velocity of the inlet air. In addition, a structure in which the lower portion of the wind wheel cover 8 is small and the upper portion is large and the structure in which the lower portion of the wheel hub 100 is small and the upper portion is large match each other to form a duct in which the blade 200 rotates by pushing air, .

14, Fig. 16, and Fig. 17, an inlet air guide ring 12 is formed on the wind inlet 15 side of the extruder blower 4, and the air current guided through the inlet air guide ring 12 And then flows into the duct between the wind wheel cover 8 and the wheel hub 100 again. The inlet wind guide ring 12 reduces the area of the duct, increases the wind speed at the inlet side, and matches the inner diameter of the wind wheel cover 8 to reduce the vortex formed by the negative pressure generated by the wind blower 4 Reduces noise.

18-20, according to an embodiment of the present invention, a diffuser cone (not shown) coaxial with the wheel hub 100 is provided on the windward side of the extruder blower 4, that is, on the relatively large diameter side of the wheel hub 100 11, and the diffuser cone 11 is a large cone structure having a large diameter at the air inlet side and a small diameter at the air discharge side. The diffuser cone 11 is fixed to the motor support 6 and a duct is formed between the outer surface of the diffuser cone 11 and the inner surface of the case 2 of the indoor unit (which may be the inner surface of the wind guide member 5) have. The duct is a circular ring structure having a small bottom area and a large top area. The thus formed, increasingly larger duct effectively expands the air pressure to reduce air velocity and flow losses, and to increase the static pressure and airflow distance of the air.

Further, in the present embodiment, as shown in Fig. 20, the inner surface of the wind guide member 5 is inclined toward the case 2 of the indoor unit, and the duct becomes larger at this portion. That is, the air guiding member 5 corresponding to the diffuser cone 11 has a structure for enlarging the duct, so that the air pressure can be further expanded.

21 to 24, according to an embodiment of the present invention, the air conditioner indoor unit may be a console type air conditioner indoor unit, the wind outlet of the indoor unit is located on the upper front side of the case 2, 4), both of which are advantageous for frontal long-term ventilation. However, the amount of wind direction rotation in the duct is disadvantageous to frontal blowing. As shown in FIG. 22, a fixed wind guide wheel 13 is installed in this embodiment, and the fixed wind guide wheel 13 is fixedly connected to a wall surface of the case 2 of the air conditioner. The direction of rotation of the air in the duct of the present embodiment rotates in the direction of the seat needle, and the inclined direction of the fixed wind guide blade 14 installed on the fixed wind guide wheel 13 blocks the air having the steady needle direction wind direction. In other words, a fixed wind guide wheel 13 is installed on the windward side of the wind blower 4, and a fixed wind guide blade 14 is provided on the fixed wind guide wheel 13 to reduce the rotational direction of air. A fixed wind wheel sealing material 18 is provided at the center of the wind guide wheel 13 to reduce the area through which the air is passed so that all the air passes through the fixed wind guide blades 14, can do. The rotational speed of the air can be reduced while the air pressure can be increased to improve the blowing air pressure.

Referring to FIGS. 21 and 24, FIG. 24 is an enlarged cross-sectional view taken along the line D-D of the indoor unit. As can be seen from the figure, the housing of the indoor unit is formed by connecting a straight section L and an arced section S connecting the straight section. In other words, the current blower disclosed in the present invention can be used in other types of air conditioner indoor units other than circular. 24, the duct of the humidifier blower fully utilizes the space inside the housing of the indoor unit. In this embodiment, the area occupied by the area of the bolus casing in the indoor unit housing exceeds 89%. In other words, applying a multistage blower to an indoor unit having the same cross-sectional area can effectively utilize the space inside the indoor unit housing, further reducing the air blowing speed and reducing the air flow noise.

25 to 27, according to an embodiment of the present invention, the wind outlet 3 of the console-type air conditioner indoor unit is located on the upper front face of the case 2, and the housing of the indoor unit has a cylindrical shape of the upper part, It consists of a rectangle with an underside from the mold. Figure 26 is an installation view of an associated assembly of a current blower, and Figure 27 is an exploded view of an associated assembly of a current blower. Referring to both figures, a stationary wind guide wheel 13 is added under the basis of the embodiment of the present invention, the upper part of the diffuser cone 11 is located in the fixed wind guide wheel 13, Is engaged with the inner circle of the fixed wind guide wheel 13 to seal the position of the fixed wind guide wheel seal material at the center of the fixed wind guide wheel 13. [ In this manner, the airflow is reduced from the fixed wind guide blade 14 of the fixed wind guide wheel 13, which is installed in a direction opposite to the direction of rotation, by reducing the duct area, improving the local wind speed, It must pass. As a result, the wind speed in the rotating direction is greatly reduced, and the pressure is further increased to improve the blowing air pressure to improve the blowing distance. That is, a diffuser cone 11 and a fixed wind guide wheel 13, which are coaxial with the wheel hub 100, are installed on the downwind side of the wind outlet 16 of the extruder blower, and the diffuser cone 11 has a wind inlet side It is a cone large structure with a large diameter and a small diameter at the air discharge side. The stationary wind guide wheel (13) is provided with a fixed wind guide blade (14) which loosens the air rotation direction. Such a combination can maximally adapt to the demand for large airflow and long-distance blowing of the cabinet-type air conditioner. In particular, with respect to the conventional blowing mode of the upper part of the housing front, the first increase by the diffuser cone 11, 14), it is possible to meet the requirements of large airflow and long-distance blowing in a situation where the motor power is not greatly increased.

In the description herein, the explanations of the reference terms "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" Means that a particular feature, structure, material, or characteristic described in connection therewith is included in at least one embodiment or example of the present invention. The exemplary representation of the term herein does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials, or features described may be combined in any suitable form in one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. And the scope of the present invention is defined by the claims and their equivalents.

Claims (24)

Claims [1] A fan for an air conditioner,
The wind guide surface having a generally conical surface or a spherical surface, the wind guide surface having an outer size gradually increasing from the lower end to the upper end; And
And a plurality of blades installed on the wind guide surface,
Each said blade comprising:
A blade root portion connected to the wind guide surface,
A blade tip portion remote from the wheel hub,
A wind inlet near the bottom of the wind guide, and
And an airflow outlet near the top of the wind guide surface, wherein
Wherein a ratio of a diameter of a rotating circumference in which a wind inflow end is located to a diameter of a rotating circumference in which a wind inflow end of the blade tip is located is a wheel hub ratio of the wind inflow end in the root portion of the blade, The ratio of the diameter of the rotating circumference where the outlet end is located and the diameter of the rotating circumference where the wind outlet end is located at the blade tip portion is the wheel hub ratio of the wind outflow end, Wherein the fan is smaller than the hub ratio.
The method according to claim 1,
And the wheel hub ratio of the wind inflow end is 0.15 to 0.45. 3. The method according to claim 1 or 2,
And the wheel hub ratio of the wind outflow end is 0.55 to 0.85. The method according to claim 1,
Wherein a narrow angle between a conical surface formed by the rotation of the fan root and a connection line of the wind outflow end and the axis of the fan is about 35 to 55 degrees. The method according to claim 1 or 4,
And a narrowing angle between the connecting surfaces of the wind inflow end and the wind outflow end of the blade root portion and the connecting surfaces of the wind inflow end and the wind outflow end of the blade tip portion, Features fan. The method according to claim 1,
Wherein a narrow angle between a connecting line of the wind inflow end and the wind outflow end of the blade section of the blade and a rotation direction of the wind inflow end is an inclination angle of the blade and the inclination angle gradually decreases from the blade root portion to the blade tip portion, Pan. The method according to claim 6,
Wherein the blade root portion has an inclination angle of 38 DEG to 55 DEG. 8. The method according to claim 6 or 7,
Wherein the blade tip portion has an inclination angle of 18 DEG to 35 DEG. The method according to claim 6,
Wherein an inclination angle of the blade root portion is 44.2 DEG and an inclination angle of the blade tip portion is 23 DEG. 7. The method according to claim 1 or 6,
Characterized in that, when the extruder fan is rotated, the narrow angle between the discharge direction and the rotational direction of the airflow at the wind outflow end is the outlet mounting angle of the blade, and the outlet mounting angle gradually increases from the blade root portion to the blade tip portion A fan of the fan. 11. The method of claim 10,
And an outlet mounting angle of the blade root portion is 90 [deg.] To 135 [deg.]. 11. The method of claim 10,
And an outlet mounting angle of the blade tip is 105 to 150 degrees. 11. The method of claim 10,
Wherein an outlet mounting angle of the blade root portion is 104 占 and an outlet mounting angle of the blade tip portion is 125.7 占 퐉. The method according to claim 1,
Wherein the number of the blades is five to nine. A case having a wind inlet and a wind outlet installed therein and having a duct connected to the wind inlet and the wind outlet respectively,
A heat exchanger provided inside the case, and
The console-type air conditioner according to any one of claims 1 to 14, which is installed in the duct, includes a humidifier having a fan. 16. The method of claim 15,
Wherein the wind guide member is connected to the inner wall of the duct and the wind guide member has a wind guide passage penetrating the wind guide member in the vertical direction, Wherein the air conditioner is located inside the passage. 16. The method of claim 15,
Wherein a gap is provided between the wind guide member and the inner wall of the duct, and a noise absorbing layer is filled in the gap. 16. The method of claim 15,
And a wind wheel cover surrounding the blades is installed between the end surfaces of the blades. 16. The method of claim 15,
And an inlet wind guide ring is installed at a lower end of the wind guide surface of the entrainer fan. 16. The method of claim 15,
Wherein a diffuser cone coaxial with the wheel hub is installed on a leeward side of the turbulence fan, and the diffuser cone is a cone large structure having a large diameter at an air inlet side and a small diameter at an air discharge side. . 21. The method of claim 20,
Wherein a diameter of the wind guide passage of the wind guide member corresponding to the diffuser cone gradually increases from bottom to top. 16. The method of claim 15,
Wherein the stationary wind guide wheel is installed on the windward side of the wind turbine, and the stationary wind guide blade is installed on the fixed wind guide wheel to reduce the rotational direction of air. 16. The method of claim 15,
A diffuser cone and / or a fixed wind guide wheel coaxial with the wheel hub is installed on the downwind side of the primary fan, the diffuser cone is a conical large structure having a large diameter at the air inlet side and a small diameter at the air discharge side, Wherein the wheel is provided with a fixed wind guiding blade for hindering the rotation direction of the air. A multistage blower comprising a multistage fan according to any one of claims 1 to 14.
KR20157000183A 2012-06-07 2012-11-28 Oblique flow fan, oblique flow blower and air conditioning indoor unit having same KR20150030697A (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
CN201220268483.X 2012-06-07
CN201210187302.5 2012-06-07
CN2012101873025A CN102705910A (en) 2012-06-07 2012-06-07 Indoor unit of air conditioner
CN 201220268483 CN202734057U (en) 2012-06-07 2012-06-07 Air conditioner indoor unit
CN201220415824.1U CN202883468U (en) 2012-08-20 2012-08-20 Floor-stand air conditioner and oblique flow fan thereof
CN2012102988100A CN102852854A (en) 2012-08-20 2012-08-20 Floor type air conditioner and oblique flow fan thereof
CN201220415824.1 2012-08-20
CN201210298810.0 2012-08-20
PCT/CN2012/085406 WO2013181904A1 (en) 2012-06-07 2012-11-28 Oblique flow fan, oblique flow blower and air conditioning indoor unit having same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101726160B1 (en) * 2016-03-11 2017-04-12 고려엠지주식회사 Impeller for non-motorized auto-cleaning filter device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104964340B (en) * 2015-05-26 2017-12-29 广东美的制冷设备有限公司 Air conditioner
GB2568234B (en) * 2017-10-30 2021-12-08 Zehnder Group Lenham Ltd Domestic ventilation fan with tapering projections for reducing turbulence
CN108488083A (en) * 2018-04-26 2018-09-04 英飞凌（深圳）智慧科技有限公司 A kind of wind turbine and air purifier
CN110160146A (en) * 2019-06-25 2019-08-23 宁波奥克斯电气股份有限公司 A kind of air conditioner indoor unit and air conditioner
CN111322701A (en) * 2020-04-03 2020-06-23 杰马科技（中山）有限公司 Bladeless cooling fan
EP4160100A1 (en) * 2021-09-30 2023-04-05 Philips Domestic Appliances Holding B.V. An air delivery system
CN114001043A (en) * 2021-11-01 2022-02-01 宁波公牛生活电器有限公司 Fan and fan lamp
TR2022003663A2 (en) * 2022-03-10 2022-03-21 Aytok Makina Insaat Plastik Gida Maddeleri Sanayi Ve Ticaret Ltd Sirketi Vortex Washing Screen Filter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4529613B2 (en) * 2004-09-22 2010-08-25 パナソニック株式会社 Blower impeller
JP5114845B2 (en) * 2006-02-01 2013-01-09 パナソニック株式会社 Blower impeller
CN201407198Y (en) * 2009-05-07 2010-02-17 漳州灿坤实业有限公司 Mixed-flow fan
JP2011226654A (en) * 2010-04-15 2011-11-10 Panasonic Corp Mixed flow fan, and air conditioner
JP2011226725A (en) * 2010-04-22 2011-11-10 Panasonic Corp Indoor unit of air conditioner
JP2012026402A (en) * 2010-07-27 2012-02-09 Panasonic Corp Mixed flow fan and air conditioner with the same
JP5409544B2 (en) * 2010-08-04 2014-02-05 三菱電機株式会社 Air conditioner indoor unit and air conditioner
CN102705910A (en) * 2012-06-07 2012-10-03 广东美的制冷设备有限公司 Indoor unit of air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101726160B1 (en) * 2016-03-11 2017-04-12 고려엠지주식회사 Impeller for non-motorized auto-cleaning filter device

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