KR101147734B1 - Fan - Google Patents

Abstract

The present invention relates to a blower having a new structure that can reduce the noise and increase the blowing efficiency by adopting a BLDC motor that can stably drive the blower fan and increase the blowing amount.

To this end, the present invention, the outer case; A fan housing installed inside the outer case; A supporter fixed to the fan housing; A shaft rotatably provided at the supporter; A bearing supporting the shaft; A stator installed inside the fan housing and fixed to maintain concentricity on the supporter; It is installed to surround the stator, there is provided a blower characterized in that it comprises a rotor combined blowing fan provided with a magnet for electromagnetic action with the stator inside.

Fan Housing, BLDC, Stator, Blower Fan, Magnet

Description

Blower {FAN}

1 is a perspective view showing a blower of the present invention

Figure 2a is a cross-sectional view showing a blower according to the present invention

FIG. 2B is an enlarged view of the supporter and stator of FIG. 2A

Figure 3a is a perspective view of the supporter of Figure 2a

3B is a bottom perspective view of FIG. 3A

4 is a partial perspective view showing a state in which the damping member is assembled to the supporter fixing part of the supporter;

Figure 5a is a perspective view showing the appearance of the sirocco fan of Figure 2a

5B is a plan view of 5A

5C is a perspective view of the abacus of 5A

Figure 6 is a perspective view showing another embodiment of the magnet applied to the rotor combined blowing fan

7 is a perspective view showing a stator applied to the present invention

8 is an exploded perspective view of FIG. 9;

FIG. 9 is an enlarged view of the core of FIG. 8, illustrating a spiral core; FIG.

10 is a perspective view showing another example of the stator applicable to the present invention                 

FIG. 11 illustrates the core structure of FIG. 10, illustrating a split core.

12 is a perspective view showing still another example of the stator applicable to the present invention

FIG. 13 illustrates the core structure of FIG. 12.

14 is a partially cutaway perspective view showing an installation state of the outdoor unit for the air conditioner of the front suction method to which the blower of the present invention is applied.

15 is an exploded perspective view showing the installation state of the outdoor unit for the air conditioner of the front suction method applied to the blower of the present invention.

Figure 16 is a front view showing the installation state of the outdoor unit for an air conditioner of the front suction method applied to the blower of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1: Blower 10: Case

11: support bracket 20: outdoor unit side heat exchanger

30: control box 200: Hall sensor

300: tab housing assembly 40: fan housing

410a, 410b: Air intake G: Grill

430: forming part 44: shroud

440a: Fastening surface 440b: Guide surface

46: damping pad 50: rotor combined blowing fan

510: mounting part 520: fan

522: upper fan part 524: lower fan part                 

522a, 524a: blade 512: bend

512a: seating surface 54 of the bent portion: abacus

542: cooling fin 544: through

546: Embossing part 548: Drainage hall

56: bushing 6: BLDC motor

65: stator 65a: spiral core

652a: base 654a: teeth

656a: recessed groove 65b: insulator

650b: Insulator Upper 651b: Insulator Lower

655b: Fastening part 656b: Positioning protrusion

657a: rivet 65c for core lamination: coil

65d: Metal tube 65 ': Stator

65a ': Split core 65 ": Stator

65a ": Tong core 68: Shaft

680: serration 680a, 680b: shaft side step

685: Plane section 69a, 69b: Bearing

70: magnet

80: supporter 82: bearing housing

822a, 822b: Supporter side step 84: Stator fixing part

84a: reinforced ribs 824: cover                 

842: positioning groove 844: through hole

86: Supporter fixing part 88a, 88b, 88c: Reinforcing rib

90: damping member 920a: main body

920b: head 95: cover bracket

The present invention relates to a blower, and more particularly to a blower that can increase the blowing efficiency and heat exchange efficiency by employing a stable and high efficiency BLDC motor.

In general, the air conditioner is divided into a separate air conditioner installed separately in the indoor and outdoor space by separating the indoor unit and the outdoor unit, and an integrated air conditioner installed through the window or the wall by combining the indoor unit and the outdoor unit as a single device. As the capacity increases, the size of the indoor unit and the outdoor unit increases, and as the vibration generated in the outdoor unit increases as the compressor included in the outdoor unit is operated, a separate air conditioner is frequently used.

Such a separate air conditioner is installed indoors so that the heat exchange action between the low-temperature low-pressure gas refrigerant and the air to provide a hot air or cold air into the air conditioning space, and is installed outdoors to achieve a sufficient heat exchange operation in the indoor unit The outdoor unit is configured to compress, condense, and expand the refrigerant so that the indoor unit and the outdoor unit are installed to be connected to each other by a refrigerant pipe.                         

Here, the indoor unit is an indoor case formed with an inlet and discharge port for indoor air intake and discharge, and an evaporator is installed inside the interior case so that a low-temperature low-pressure gas refrigerant passes through the heat exchange action with the air, one side of the evaporator Installed in the indoor air passes through the evaporator is made of an indoor fan and a motor to discharge the cold air back to the indoor side.

The outdoor unit includes an outdoor case having an inlet and a discharge port through which outdoor air is sucked and discharged, a compressor installed inside the outdoor case to compress the refrigerant passing through the evaporator into a gas refrigerant having a high temperature and high pressure, and through the compressor. A condenser for condensing a refrigerant with medium-temperature high-pressure liquid refrigerant by exchanging heat with outdoor air, an expansion means such as a capillary tube or an electronic expansion valve for reducing the refrigerant passing through the condenser with a low-temperature low-pressure gas refrigerant, and one side of the condenser It is composed of an outdoor fan and a motor which is a kind of axial flow fan to allow the outdoor air to pass through the condenser, the motor is applied to the general single-phase and three-phase induction motor, the induction motor is a shaft and in the middle of the stator installed inside the housing As alternating current is applied to the stator in such a way that the rotor rotates, the rotating magnetic field It is thereby rotate the rotor.

Usually, the outdoor case is formed in the three inlet side in order to increase the blowing efficiency, the discharge port is formed on the upper surface, when the outdoor fan is operated, the air is sucked from the three sides to heat exchange, then to the upper surface The heat exchanged air is discharged.

At this time, the compressor, the condenser, the expansion means, the evaporator is installed to be connected to each other by the refrigerant pipe, and the refrigerant is circulated while being sequentially compressed, condensed, expanded, evaporated along the component.

However, such a conventional outdoor unit for an air conditioner has been limited in the installation place due to the high density of the city and the strengthening of environmental management, and has been the subject of complaints around by the noise and heat emission. In particular, common residential facilities, such as large apartment complexes, require outdoor units to be installed inside the veranda due to aesthetics and noise problems.

Therefore, in recent years, the outdoor unit for the air conditioner of the front suction system, which sucks and heats the air only to the front and then discharges the heat exchanged to the front, has been adopted in a common residential facility such as a large-scale apartment complex.

However, the outdoor unit for the air conditioner of the front suction method as described above has a problem in that the blowing efficiency and the heat exchange efficiency are lowered because the suction area less air is sucked than the outdoor unit for the air absorber of the three-side suction method.

In addition, since the single-phase or three-phase induction motor for the air conditioner outdoor unit of the front suction method is applied to drive the blower fan, such an induction motor is not only low in overall efficiency of 40-50% or less, and in particular, The range of the variable range of the torque is limited due to the narrow range of stable torque characteristics, and thus the abnormal noise and efficiency decreases when the rotational speed leaves the stable torque characteristic.

 The present invention has been made to solve the above problems, by adopting a BLDC motor that can increase the blowing amount while driving the blowing fan stably, blower apparatus that can reduce the noise and increase the blowing efficiency and heat exchange efficiency The purpose is to provide.

According to an aspect of the present invention for achieving the above object, an outer case; A fan housing installed inside the outer case; A supporter fixed to the fan housing; A shaft rotatably provided at the supporter; A bearing supporting the shaft; A stator installed inside the fan housing and fixed to maintain concentricity on the supporter; It is installed to surround the stator, there is provided a blower characterized in that it comprises a rotor combined blowing fan provided with a magnet for electromagnetic action with the stator inside.

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

1 is a perspective view showing a blower of the present invention, Figure 2a is a cross-sectional view showing a blower according to the present invention, Figure 2b is an enlarged view of the supporter and stator of Figure 2a.

On the other hand, Figure 3a is a perspective view showing the supporter of Figure 2a, Figure 3b is a bottom perspective view of Figure 3a, Figure 4 is a partial perspective view showing a state in which the damping member is assembled to the supporter fixing portion of the supporter.                     

5A is a perspective view showing the appearance of the sirocco fan of FIG. 2A, FIG. 5B is a plan view of 5A, FIG. 5C is a perspective view of the main plate of 5A, and FIG. 6 is another embodiment of a magnet applied to a rotor-purpose blower fan. Is a perspective view.

7 is a perspective view showing a stator applied to the present invention, FIG. 8 is an exploded perspective view of FIG. 9, and FIG. 9 is an enlarged view of the core of FIG. 8, showing a spiral core.

Blower 1 according to an embodiment of the present invention, the outer case 10, the air inlet 410a, 410b fixed in the outer case 10 and formed in the upper and lower directions, respectively, and the air discharge port formed in the front Fan housing 40 made of a metal plate having a support, a supporter 80 fastened and fixed to the upper surface of the fan housing 40, a shaft 68 rotatably provided on the supporter 80, and the supporter Bearings 69a and 69b provided at 80 to rotatably support the shaft 68, and stators installed inside the fan housing 40 and fixed to maintain concentricity on the supporter 80; And a rotor double blower fan 50 installed to surround the stator 65 and provided with a magnet 70 having an electromagnetic action with the stator 65 therein.

Then, each surface of the outer case 10 corresponding to the air discharge port and the air suction ports 410a and 410b of the fan housing 40 is opened, and the dog corresponding to the air discharge port side of the fan housing 40 is opened. The grille G is installed on the side.

On the other hand, the fan housing 40, the air inlet 410a is formed on the lower surface, the air inlet 410b which can serve as a through hole for the motor installation is formed on the upper surface spaced a predetermined distance from the lower surface, An air outlet is formed at one side of the side wall surface surrounding the rotor combined blowing fan 50 while interconnecting the lower surface and the upper surface.

In addition, the fan housing 40 may be formed of a plastic material, and may be fixedly installed in the outer case 10.

On the other hand, the rotor combined blowing fan 50 installed in the fan housing 40 is installed so that its central axis is eccentric with respect to the center line of the upper and lower surfaces of the fan housing 40.

That is, the center line of the upper and lower surface center lines of the fan housing 40 and the center axis line of the combined rotor blower fan 50 installed therein do not coincide with each other and are spaced apart from each other.

Thus, as can be seen through Figure 2a, the space size between the fan housing 40 and the rotor combined blowing fan 50 is different from each other.

A support bracket 11 is provided between the outer case 10 and the fan housing 40 to support the fan housing to the outer case 10.

The support bracket 11 extends integrally from the outer case 10 and is preferably fastened to the upper surface of the fan housing 40. However, the support bracket 11 may be interposed between the outer case 10 and the fan housing 40 as a separate member. It may be.

1, a forming unit 430 is formed on the upper surface of the fan housing 40 to reinforce strength, and the forming unit 430 formed on the upper surface of the fan housing 40 has a substantially circumferential direction. Formed accordingly.

The forming part 430 formed on the upper surface of the fan housing 40 is formed in a shape in which the width thereof varies in the circumferential direction. That is, the width of the forming unit 430 gradually increases as it comes to a wide portion (outcase front side) of the upper surface of the fan housing 40.

On the other hand, the air inlet 410a of the lower surface of the fan housing 40 and the air inlet 410b, which serves as a through hole for motor installation of the upper surface of the fan housing 40, the shroud 44 for guiding the flow of air introduced therethrough. ) Is provided.

The shroud 44 is a separate member, a guide surface having a predetermined curvature for guiding the fastening surface 440a and the air flow that are fastened around the air inlets 410a and 410b of the upper and lower surfaces of the fan housing 40. Although the case made of 440b is illustrated, the fan housing 40 may be integrally formed with the fan housing 40. In this case, the thickness of the shroud 44 will be thinner than other portions toward the end.

Meanwhile, referring to FIGS. 2A, 2B, 3A, and 3B, the supporter 80 includes a bearing housing part in which bearings 69a and 69b for supporting the shaft 68, such as ball bearings, are installed. 82, a supporter fixing portion 86 formed to extend radially outwardly of the bearing housing portion 82 so as to fix the supporter 80 to the upper surface of the fan housing 40, and the rotor combined blowing fan ( 50) It is formed on the lower end of the bearing housing portion 82 which is located inside and comprises a stator (65) fixing portion for providing a lower surface for fixing the stator (65), made of a metal material such as aluminum As the casting, it is preferable to cast. That is, the supporter fixing portion 86 of the supporter 80 is triangulated.

At this time, although not shown, on the upper surface of the supporter 80 and the fan housing 40, the positioning projection and the position to be able to fit the assembly position when installing the supporter 80 on the upper surface of the fan housing 40 Crystal grooves may be formed to correspond to each other.                     

On the other hand, although not shown, in order to reduce the vertical height of the fan housing 40, the supporter fixing portion 86 of the supporter 80 may be assembled to be located inside the fan housing 40.

That is, when the supporter fixing portion 86 is referred to as the upper surface of the upper surface of the fan housing 40 and the inside of the lower surface of the fan housing 40, the supporter fixing portion 86 is the fan housing 40. Although fixed to the upper surface of the upper surface of the, the supporter fixing portion 86 is fixed to the lower surface of the upper surface of the fan housing 40, the supporter fixing portion 86 protrudes outside the upper surface of the fan housing 40. By reducing the total height of the fan housing 40, the size of the product can be reduced.

The supporter 80 may be configured such that at least the upper end of the bearing housing 82 of the supporter is positioned inside the fan housing 40 when the supporter is assembled to the fan housing 40. The end portion is bent in the upper direction of the fan housing 40 so as to be located above the upper end of the bearing housing 82.

In addition, the supporter 80 is provided with a reinforcing rib 88a for reinforcing the strength of the supporter fixing part 86, and the reinforcing rib 88a is preferably extended to be connected to the outer circumferential surface of the bearing housing 82. .

In addition, the supporter 80 and the stator 65 are provided with corresponding positioning protrusions and positioning grooves 842 that can match concentricity when the stator 65 is fastened to the supporter 80. More specifically, the stator fixing portion 84 of the supporter 80 is provided with a positioning groove 842 for determining the assembly position with the stator 65, and for positioning on the corresponding stator 65 A projection 656b (see FIG. 12) is provided. At this time, the positioning projection may be formed in the supporter and the positioning groove may be formed in the insulator of the stator.

On the other hand, a through hole 844 is formed on the surface of the stator fixing portion 84 of the supporter 80 to increase motor cooling performance.

In addition, the step 822a formed at the lower side of the step 822a and 822b formed on the inner circumferential surface of the bearing housing 82 is installed at the lower side of the bearings respectively installed at the upper and lower side of the outer circumferential surface of the shaft 68. Stepped 822b is formed in the shape of the letter "a" to form a structure for supporting the upper end of the lower bearing (69a), and formed on the upper side of the step (822a) (822b) formed on the inner circumferential surface of the bearing housing 82 Is formed in a "b" shape to form a structure for supporting the lower end of the upper bearing (69b) is installed on the upper side.

In addition, the positions where the lower bearing 69a and the upper bearing 69b on the shaft 68 are also determined on the lower and upper outer circumferential surfaces of the shaft 68 located inside the bearing housing 82. A crystal step may be formed.

On the other hand, a surface opposite to the fastening surface of the stator 65 of the stator fixing portion 84 of the supporter 80 extends to the outer circumferential surface of the bearing housing 82 to reinforce the strength of the stator fixing portion 84. A plurality of reinforcing ribs 84a are provided.

Here, the plurality of reinforcing ribs 84a are formed along the outer circumferential surface of the bearing housing 82 at a predetermined interval, and are formed to extend to be connected to the outer circumferential portion of the stator fixing part 84.                     

In addition, although not shown, the reinforcing rib 84a may be formed as an integral rib covering the upper surface of the stator fixing part 84 and the outer circumferential surface of the bearing housing 82.

Meanwhile, a cover 824 is provided at an upper end of the bearing housing 82 of the supporter 80 to prevent foreign substances such as dust from flowing into the bearing housing 82.

2A, 2B, and 4, a damping pad 46 is preferably provided at a contact surface of the fan housing 40 and the shroud 44.

More specifically, the vibration damping pad 46 is interposed between the fastening surface 440a of the shroud 44 and the peripheral surface of the air inlets 410a and 410b of the fan housing 40 which is in contact therewith. Blocking the transmission to the fan housing (40).

In addition, a damping member 90 is provided between the supporter fixing part 86 and the fan housing 40 of the supporter 80.

Referring to FIG. 4, the vibration damping member 90 is forced through a main body portion 920a contacting the fan housing 40 and a vibration damping member fixing hole 866 formed in the supporter fixing portion 86. The head portion 920b is inserted into and fixed to the supporter fixing portion 86, and a through hole 930 penetrating the main body portion 920a and the head portion 920b is provided.

When the supporter 80 is fixed to the fan housing 40 side, the head portion 920b of the vibration damping member 90 is connected to a fastening member such as a bolt 15d passing through the vibration damping member 90. It is preferable that the cover bracket 95 made of a metal material such as an iron plate to prevent damage to the vibration damping member 90 generated by the acting fastening force is overlaid.

The cover bracket 95 refers to an iron piece shaped like a horseshoe so as to wrap the head portion 920b.

That is, the vibration damping member 90 pushes the head portion 920b through the vibration damping member fixing hole 866 formed in the supporter fixing portion 86 to force the body portion 920a and the head portion 920b. The neck portion to be connected is fixed by being caught around the damping member fixing hole 866. In such a state, the cover bracket 95 is put on the head 920b, and then the bolt 15d passes through the through hole 930 of the cover bracket 95 and the vibration damping member 90. The fan housing 40 When it is fastened to the supporter 80 is fixed to the fan housing 40.

Meanwhile, referring to FIGS. 2A, 2B, 5A, and 5B, the rotor combined blowing fan 50 may include a mounting part 510 having the magnet 70 provided on an inner circumferential surface thereof, and upper and lower parts of the mounting part 510. The fan unit 520 is formed integrally with each side.

Here, the fan unit 520 is formed of sirocco fans 522 and 524 having a plurality of blades 522a and 524a along the circumferential direction of the mounting unit 510, and sucks air in the axial direction to discharge air in the radial direction. It is configured to.

At this time, the end of each of the blades (522a, 524a) to bind the individual blades to each other fixed plate (53a) to prevent the flow of the blades (522a, 524a) and the noise caused by the high speed rotation of the fan 50 53b is provided.

The bent portion 512 having a seating surface for supporting the magnet 70 is formed on the inner circumferential surface of the mounting portion 510 along the circumferential direction.                     

Meanwhile, referring to FIGS. 2A, 2B, and 5A, 5B, and 5C, the rotor combined blower fan 50 is axially connected to the shaft 68 and rotated using the shaft 68 as a rotation axis. To this end, a main plate 54 is connected to each of the blades 524a formed along the circumferential direction inside the lower sirocco fan 524 positioned below the mounting unit 510, and the shaft is formed at the center of the main plate 54. And a bushing 56 for fastening between the 68 and the rotor blower fan 50.

The bushing 56 has a disc-shaped base portion 560a which is in close contact with the surface of the main plate 54, and protrudes in the axial direction at the center of the base portion 560a, and has a shaft 68 insertion hole at the center thereof. It consists of a hub portion 560b provided.

The bushings 56 are two pieces, which are coupled to each other by riveting or screwing by the rivets 58 in close contact with both sides of the main plate 54.

The main plate 54 is installed at a position close to the fixed side of the supporter 80 from a longitudinal center point of the rotor-purpose blowing fan 50.

The reason for doing this is because a large amount of air flows from the air inlet 410a opposite to the side where the motor is installed among the air inlets 410a and 410b of the fan housing 40.

Here, the position of the abacus 54 is the shorter side from the abacus 54 to the fan end and the longer side from the abacus 54 to the fan end when dividing the entire length of the rotor combined blowing fan 50. Preferably, the ratio up to falls within the range of 1: 1.3 to 1: 2.                     

In addition, at least one bolt fastening hole 560c is provided on the outer circumferential surface of the hub portion 560b of the bushing 56, and on the outer circumferential surface of the end portion of the shaft 68, the bolt fastening hole 560c passes through when assembled. A planar section 685 to which the pressing force of the bolt 15f to be fastened is applied is provided.

Therefore, when the assembly is applied to the pressing force of the bolt to the flat section 685, the rotor combined blowing fan 50 is firmly coupled to the shaft 68 to rotate integrally.

On the outer circumferential surface of the fan connection side end portion of the shaft 68, a protrusion (not shown) or a locking step (not shown) for determining an insertion position of the shaft with respect to the bushing may be provided. In other words, when assembling the shaft and the rotor blower fan, when the projection of the shaft or the locking jaw is no longer inserted into the hub of the bushing, the flat section automatically comes to the bolted position, and the rotor blower fan The position in the fan housing of the is also determined.

On the other hand, the main plate 54 is provided with a plurality of cooling fins 542 acting to cool the heat generated in the stator 65 by blowing air to the stator 65 when the rotor combined blowing fan 50 is rotated It is formed radially, the cooling fin 542 is formed to have a predetermined length in the radial direction.

Here, the cooling fin 542 is formed to face the upper stator 65 by the lancing process, the through hole 544 formed by the lancing process serves as a vent.

The cooling fin 542 is bent at an angle of 90 ° with respect to the main plate surface to face the stator 65.                     

In addition, an embossing portion 546 is formed in the region between the cooling fins 542 and the cooling fins 542 of the main plate 54 to strengthen the strength of the main plate 54, and on the embossing portion 546. Drainage holes 548 for water discharge are formed.

On the other hand, the magnet 70 is an individual piece is arc-shaped as shown in Figure 5a, or as shown in Figure 6 C-shaped (ie, the convex portion is approximately C-shaped, indicating this) C-shaped magnet 70 ").

2B, 7 and 8, the stator 65 has an annular shape that forms a multilayer structure while spirally rotating an iron plate formed of a tooth 654a and a base portion 652a from the lowermost layer to the uppermost layer. Spiral core (65a) of the, and wraps the core to be insulated so as to protrude into the core is formed with a fastening hole for fastening the stator 65 to the fan housing 40 by a fastening member such as bolts (15c) And an insulator 65b having a fastening portion 655b, and a coil 65c wound around the teeth 654a of the core.

At this time, the fastening portion 655b of the stator is formed to protrude at least three places inside the core, and the height of the fastening portion 655b forms 20% or more of the total stack height of the core.

This, when there is no separate fastening portion in the core, as shown in Figure 9, the fastening portion 655b of the insulator should be formed so that the height is 20% or more of the total core stacking height, sufficiently to withstand the vibration generated when driving the motor Because it can.

On the other hand, the fastening hole of the fastening portion 655b, the metal tube (65d) is press-fitted, or having a cut portion cut along the longitudinal direction instead of the metal tube (65d) spring pins that are elastic in the radial direction (not shown) ) Can be installed.

The spiral core 65a is wound in a spiral form from the bottom layer to the top layer to form a multi-layer structure, and a plurality of teeth radially outward from the base portion 652a of the spiral core 65a. 654a protrudes in a radial direction, and the base portion 652a of the spiral core 65a is provided with a rectangular or trapezoidal recessed groove 656a to reduce stress when the core is wound.

In addition, the spiral core (65a) is riveted by a rivet 657a penetrating through the through hole formed in the base portion 652a, the winding start portion and the winding end portion of the spiral core (65a) are in contact with each other It is welded to a predetermined site and joined.

On the other hand, the insulator (65b) as shown in Figure 8 is produced as a separate upper and lower pieces are assembled to wrap the core.

The insulator 65b in the case of being manufactured by separate upper and lower pieces includes an insulator upper 650b coupled to the upper side of the core and an insulator lower 651b coupled to surround the lower side of the core.

On the other hand, the insulator 65b is not made of a separate upper and lower pieces, but may be made at a time by molding, of course, the core is processed in the state inserted into the resin.

FIG. 10 is a perspective view showing another example of a stator applicable to the present invention, and FIG. 11 is a perspective view illustrating a split core as an example of the core structure of FIG. 10. In the case of the stator 65 'of FIG. In the core, a split core is applied instead of a spiral core 65a.

The split core 65a 'is made by forming an iron plate composed of a tooth 654a and a base 652a in a divided form along a circumferential direction on a base material, and then welding the divided core pieces by connecting them together. Core.

W in the figure indicates a welded part.

In this case, although an insulator 65b having a form of being assembled with each other as a separate piece is shown, the core may be insert molded as shown in FIG. 12 so that the insulator completely surrounds the core.

FIG. 12 is a perspective view showing another example of the stator applicable to the present invention, and FIG. 13 illustrates the core structure of FIG. 12. In the case of the stator 65 "shown in FIG. The iron plate composed of the teeth 654a and the base portion 652a instead of the spiral core 65a or the split core shows that a tubular core 65a " that is freely cut along the circumferential direction may be applied. The structure is as shown in FIG.

In FIG. 12, the core is insert-molded so that the insulator completely surrounds the core. However, in this case, the insulator in the form of being assembled together as a separate piece may be applied as in FIG. 11.

Operation and blowing process of the blower of the present invention configured as described above is made as follows.                     

A current flows sequentially in the coil 65c of the stator 65 constituting the BLDC motor 6 through a tap housing assembly 300 for power connection, between the stator 65 and the magnet 70. When the mutual electromagnetic force is generated and the rotor combined blowing fan 50 rotates with the shaft 68 as the rotating shaft, the air sucked through the air inlets 410a and 410b of the upper and lower parts of the fan housing 10 is outcased. (10) It discharges through the discharge port O of the front surface.

Specifically, as the current is applied to the coil 65c of the stator 65 constituting the BLDC motor 6, mutual electromagnetic force is generated between the stator 65 and the magnet 70, the magnet 70 in the sensor ) By detecting the position of the current and sequentially flowing current to the coil 65c of the stator 65 such that mutual electromagnetic force is continuously generated between the stator 65 and the magnet 70, and by such electromagnetic force. The rotor combined blowing fan 50, to which the magnet 70 is fixed, is rotated using the shaft 68, which is connected to the shaft, as a rotation axis.

At this time, the BLDC motor 6 can be operated at various rotational speeds because the torque characteristic is stable, and can be operated at a stable speed, thereby reducing noise generation and further reducing power consumption.

Hall sensor 200 is applied as the sensor for controlling the motor in the above.

In other words, the blower 1 of the present invention, when the rotor combined blowing fan 50 by the BLDC motor 6 is rotated, the outside air is sucked into the lower air intake 410a of the fan housing 40 at the same time A part is sucked into the upper air inlet 410b of the fan housing 40 and then discharged in the circumferential direction, guided by the fan housing 40 to exit through the outlet O of the outer case 10. do.

On the other hand, the operation and effect of the blower of the present invention is as follows.

First, since the blower device 1 according to the present invention is applied to the BLDC motor 6 which is stable at most rotational speeds and maintains high efficiency in order to drive the combined rotor blower fan, the motor may be varied while the rotational speed is varied. It can be driven, and the stable and high-efficiency operation is made in the entire speed range has the advantage of reducing noise and at the same time reducing power consumption.

In addition, the blower 1 according to the present invention can effectively install and install the BLDC motor 6 to the side of the inner side of the fan housing by using a separate supporter 80, the BLDC motor effectively, and the rotor combined with the rotor By installing to be inserted inside the blower fan, there is an advantage that can reduce the size of the overall blower.

In addition, since the blower 1 according to the present invention has a motor direct type structure, noise and failure, power loss is reduced, and the bearing housing part is made of metal, so there is no thermal deformation, thereby increasing reliability of the product.

On the other hand, in the blower 1 according to the present invention, the bent portion 512 having a seating surface 512a on which the magnet 70 is supported is formed on the inner circumferential surface of the combined blower fan 50 for the rotor along the circumferential direction. Since the magnet can be stably supported inside the dual rotor blower fan 50, the production of the dual rotor blower fan 50 is facilitated.

In addition, a plurality of cooling fins are formed to have a predetermined length in the radial direction while forming a plurality of cooling fins on the main plate provided in the rotor-blowing blower fan 50. This air is blown toward the stator to cool the heat generated by the stator 65.

In addition, the cooling fin is formed to face the stator by the lancing process, and the through hole formed by the lancing process serves as a vent.

In addition, an embossed portion is formed in a region between each cooling fin and the cooling fin of the main plate to improve the overall strength of the main plate, and the drainage hole formed in the embossed portion allows water to be discharged to the outside of the motor.

Further, in the present invention, by adopting a spiral core 65a having an easy winding structure, it is possible to prevent waste of the base material and to increase the ease of manufacture, and the rigidity of the stator fixing part 84 of the supporter 80 can be improved. Increase noise, reduce vibration and improve mechanical reliability and extend life.

That is, the recess groove 656a formed in the base portion 652a of the spiral core 65a constituting the stator 65 reduces the stress during winding of the core, thereby helping the winding operation to be easily performed with a smaller force.

8 and 9, since the fastening portion 655b of the resin insulator 65b is formed so that its height is 20% or more of the total core stacking height, the core, which is a metal, is positioned at the fastening portion. Even if it is not, it will have sufficient rigidity, preventing damage to the fastening portion 655b due to the vibration generated when the motor is driven.

In particular, the height of the fastening part 655b is most preferably formed to be the overall height of the stacked cores.

In addition, the height of the fastening part 655b may be equal to or greater than the total height of the stacked cores. However, if the height of the fastening part 655b becomes too large, the overall height of the driving part of the blower becomes large, which is disadvantageous in compacting the blower. In consideration of this, the height of the fastening part 655b is preferably not more than twice the height of the entire core stack.

In addition, the positioning protrusions 656b formed on the fastening part 655b are joined to the positioning grooves 842 of the supporter 80 to facilitate the fastening of the stator 65.

That is, in the present invention, the stator 65 is firmly supported by the supporter 80, and the concentricity of the stator is effectively maintained.

In addition, the blower (1) of the present invention is made of a low-cost metal plate while the fan housing 40 is heat-resistant, thereby making it low cost and good manufacturability.

In addition, the blower device 1 of the present embodiment can increase the blowing efficiency as the BLDC motor 6 is installed inside the blower fan for the rotor as well as minimizing the suction flow resistance and enabling stable driving with high efficiency. Can be.

Hereinafter, an example in which the blower 1 having the above-described configuration is applied to an outdoor unit of an air conditioner of a front suction method will be described with reference to FIGS. 14 to 16.

14 to 16 is a partially cutaway perspective view and an exploded perspective view and a front view showing the installed state of the outdoor air conditioner air conditioner outdoor unit in accordance with the present invention, the outdoor air conditioner outdoor unit of the front air intake discharge method according to the present invention, Figure 14 As shown in FIG. 16, various components are installed in the case 10 ′ formed to open the front surface, and the outdoor unit of the front suction method is installed on the outer wall 2 of the residential and / or commercial building. It is installed in the formed inner wall of the rectangular shape.

Specifically, the outer frame 4 is fixedly installed on the inner wall of the space formed on the outer wall 2 of the building, the inner frame 5 inside the outer frame 4 is fixed to the outer frame 4 ( In some cases, the inner and outer frames 4 and 5 may be integrally formed, and the inner region of the inner frame 5 may be partitioned vertically into the suction region 7a and the discharge region 7b. The intermediate separator 9 is installed to cross the middle, and a plurality of louver blades 8 are installed in each region to allow air to be sucked in or discharged through the gaps between the louver blades 8, and the inner frame (5) An outdoor unit is installed to be in close contact with the inside, and a sealing member S is provided between the inner frame 5 and the outdoor unit to prevent air leakage and to cushion vibration.

The outdoor unit for the air conditioner of the front suction and discharge system installed as described above is formed with a suction port I and a discharge port O so as to be partitioned with each other at the lower side and the upper side of the open front of the case 10a, and inside the suction port I. A compressor (not shown) and a heat exchanger 20 for compressing and condensing a refrigerant are installed. A blower 1 is built in the discharge port O to blow air, and in particular, the blower ( 1) the rotor combined blowing fan 50 is installed inside the fan housing 40 fixedly installed inside the discharge port O, and the rotor combined blowing fan 50 is connected to the rotor combined blowing fan 50. BLDC motor 6 for driving the rotation is installed to be fixed to the fan housing 40 by a separate supporter 80.

Here, the case 10a is formed with a suction part 11a and a discharge part 11b inside the suction port I and the discharge port O so as to correspond to the suction area 7a and the discharge area 7b, respectively. In order to prevent invasion of a large sized foreign substance, a bee, an animal, etc., the grille G is preferably provided at each of the suction port I and the discharge port O on the open front surface.

For reference, the case 10a is not only considering the front suction, but also considering the installation of a heat exchanger, etc., so that the structure may be slightly different from the case 10 of the blower described above.

In addition, the case 10a is installed in the suction part 11a and the discharge part 11b such that various components such as the compressor and the heat exchanger 20 are fixed to brackets (not shown) of various shapes. The case 10a is installed such that an open front circumferential portion is in close contact with the sealing member S inside the inner frame 5.

Of course, the compressor and the heat exchanger 20 are installed to be connected by the indoor unit side heat exchanger (not shown) and the refrigerant pipe, and in addition, expansion means (not shown) such as a capillary tube or an electronic expansion valve are also used as the outdoor unit side heat exchanger. The refrigerant is installed between the indoor unit and the indoor unit by a refrigerant pipe, and the refrigerant is circulated along the refrigeration cycle consisting of the compressor, the outdoor unit side heat exchanger 20, the expansion unit, and the indoor unit side heat exchanger. The space installed in the indoor unit is cooled while expanding and evaporating.

At this time, the outdoor unit side heat exchanger 20 is provided with a plurality of cooling fins 602c in a state in which a plurality of refrigerant pipes are arranged to be bent, and configured to be bent in a 'U' shape to form a suction part of the case ( The control box 30 is installed at 11a), and the compressor is installed at the inside thereof, and the control box 30 for controlling the operation of various components included in the outdoor unit is installed at the rear side of the compressor.

In addition, the blower 1 is fixedly installed above the outdoor unit side heat exchanger 20 as described above. The rotor combined blower fan 50 and the BLDC motor 6 are connected to each other, and then the supporter 80 is connected. The rotor combined blowing fan 50 and the BLDC motor 6 are fixedly installed in the fan housing 40, and then the fan housing 40 is discharged from the case 10a. It is installed to be fixed by a separate fixing bracket (not shown) above the outdoor unit side heat exchanger 20 so as to be located at.

Specifically, the rotor combined blowing fan 50 is a kind of centrifugal fan that sucks air in the axial direction and discharges it in the circumferential direction, so that the amount of air is increased in comparison with the axial fan.

And, the structure of the rotor combined blowing fan 50 follows the structure of the above-described embodiment.

Next, the fan housing 40 has air inlets 410a on the top and bottom surfaces of the fan housing 40 so as to suck air passing through the outdoor unit side heat exchanger 20 in the axial direction of the rotor combined blowing fan 50. 410b is formed, and each air inlet 410a, 410b is preferably provided with a shroud 44 to guide the sucked air to the rotor combined blowing fan 50, the rotor combined blowing An air discharge port is formed on the front surface of the fan 50 to discharge air in the circumferential direction of the fan 50.

At this time, the air discharge port of the fan housing 40 is in communication with the discharge port (O) of the case (10a).

On the other hand, the BLDC motor 6 uses a drive circuit instead of a brush in converting alternating current into a direct current, and since there is no brush, spark does not occur and there is little risk of gas explosion, and at most rotational speeds. While driving stably and maintaining a high efficiency of about 70 to 80%, specifically, the magnet 70 is coupled to the rotor combined blowing fan 50 provided on the inner circumferential surface of the mounting portion 510 by mutual electromagnetic force between the magnet 70 and the magnet 70. The stator 65 generates a rotational force to drive the combined rotor blower fan 50, and the hall sensor 200 detects the position of the combined rotor blower fan 50 and controls the supplied current.

In particular, the BLDC motor 6 is a rotor combined blowing fan 50 by the supporter 80 on the air inlet 410b side of the upper surface of the fan housing 40 having a relatively low suction flow rate in order to reduce suction flow resistance. It is fixedly installed to be located inside.

In detail, the shaft 68 is installed to be supported by the supporter 80 by bearings 69a and 69b such as ball bearings so as to be rotatable in a state of passing through the supporter 80 and the lower end of the shaft 68 is supported. It is axially connected to the rotor dual blower fan 50, the stator 65 is a stator high of the supporter 80 on the upper side of the rotor dual blower fan 50 at a predetermined distance from the outer circumference of the shaft 68 It is installed to be fixed to the government 84.

In addition, the rotor combined blowing fan 50 is positioned to surround the outer circumference of the stator 65 and is axially connected through the shaft 68 and the main plate 54 to generate mutual electromagnetic force with the stator 65. The magnet 70 is fixed to the inner circumferential surface of the mounting portion 510 in the circumferential direction, and the plurality of ribs or embossing portions are formed in the abacus 54 in a radial direction so as to reinforce the strength even when centrifugal force is generated. In addition, the Hall sensor 200 is installed to be fixed to the core side of the stator (65).

Therefore, when a current flows sequentially through the coil 65c of the stator 65, the rotor combined blowing fan 50 is driven to rotate by the mutual electromagnetic force of the current flowing through the coil and the magnet 70.

Next, the supporter 80 is installed such that the rotor combined blowing fan 50 and the BLDC motor 6 to be suspended inside the fan housing 40, in detail, the shaft 68 is the bearing ( The stator 65 is integrally formed at the lower end of the cylindrical bearing housing 82 arranged to be rotatable by the 69a) and 69b and the lower end of the inner bearing housing 82 of the rotor-blowing fan 50. Is formed to protrude in a radial direction at a predetermined interval on the outer periphery of the upper end of the bearing housing 82 and the stator fixing portion 84 is formed to be fastened around the air inlet 410b of the upper surface of the fan housing 40 It consists of a plurality of supporter fixing portion 86 to be fixed.

At this time, the bearing housing 82 has a cylindrical shape having a shorter length than that of the shaft 68, and the bearings 69a and 69b are installed inside the upper and lower ends to support the shaft 68 so as to be rotatable. The stator fixing part 84 has a plurality of positioning grooves 842 and a fastening hole 846 formed on the lower surface thereof so that the stator 65 may be fixed by screws.

In addition, the supporter 80 is preferably three supporter fixing portion 86 is formed while maintaining a 120 ° interval around the upper end of the bearing housing 82 in order to distribute the load to support, such supporter high A reinforcing rib 88a is formed between the bearing housing 82 and the supporter fixing portion 86 so as to support the lower side of the supporter fixing portion 86 in order to reinforce the strength of the government portion 86. More preferably, a plurality of auxiliary reinforcing ribs 88b and 88c are formed on the upper surface thereof.

In particular, the supporter fixing portion 86 is formed to protrude radially from the stator fixing portion 84, and the middle portion is formed to be inclined upward toward the radial direction, and the vibration damping member fixing hole in the horizontal portion of the end thereof. 866 is formed, and thus the supporter 80 is installed such that the supporter fixing part 86 is fastened around the upper air inlet 410b of the fan housing 40.

Looking at the assembly process of the blower which is the main part of the present invention configured as described above and the operation of the outdoor unit are as follows.

First, the BLDC motor 6 has the shaft 68 rotatably installed in the bearing housing 82 of the supporter 80 by the bearings 69a and 69b, and the stator 65 is rotatable. The rotor combined blowing fan 50, which is screwed to the bottom surface of the stator fixing part 84 of the supporter 80, and has a magnet 70, is positioned to be positioned outside the stator 65. It is assembled in shaft connection with the shaft (68).

Therefore, the blower 1 in which the BLDC motor 6 is assembled is fixedly installed by a separate bracket in a state of being mounted on the outdoor unit side heat exchanger 20, and the BLDC motor 6 is operated. It is installed to be connected by the control box 30 and the wire to control the.

Looking at the operation of the outdoor unit assembled as described above, the compressor is operated according to the signal of the control box 30, and the refrigerant flows into the indoor unit through the compressor, the outdoor unit side heat exchanger 20, expansion means And circulates along the indoor unit side heat exchanger.

At this time, since the refrigerant is circulated to the outdoor unit side heat exchanger 20 and the sirocco fan 50 is driven by the BLDC motor 6, the air sucked through the inlet I of the case 10a is After passing through the outdoor unit side heat exchanger 20, the refrigerant is heat-exchanged to condense the refrigerant, and then the heat-exchanged air is discharged through the discharge port O of the case 10a through the rotor combined blowing fan 50.

Of course, the BLDC motor 6 may be operated at various rotational speeds because the torque characteristic is wide, and thus, the noise may be reduced as it is stably operated, and further, power consumption may be reduced.

Accordingly, since the BLDC motor 6 sucks air in the axial direction as the rotor combined blowing fan 50, which is a kind of centrifugal fan, rotates, most of the air passing through the outdoor unit side heat exchanger 20 is A portion of the fan housing 40 is sucked into the lower air inlet 410a and at the same time a portion thereof is sucked into the upper air inlet 410b of the fan housing, and the shroud 44 formed at each of the air inlets 410a and 410b. The discharge port of the case (10a) is guided by the inlet in the axial direction of the combined rotor fan 50 is discharged in the circumferential direction, guided by the fan housing 40 and communicated to the air outlet of the fan housing ( Exited through O).

At this time, since the BLDC motor 6 is installed at the air inlet 410b of the air inlet 410a and 410b of the fan housing 40, the suction flow resistance can be reduced. In addition, the high efficiency and stable driving can increase the blowing efficiency and heat exchange efficiency.

On the other hand, although the embodiments have been described above, the fact that the present invention can be embodied in many other forms without departing from the spirit and scope thereof is apparent to those of ordinary skill in the art.

Accordingly, the above-described embodiments should be considered illustrative rather than restrictive.

As described above, since the blower of the present invention is applied to the BLDC motor that is stable at the most rotational speed and maintains high efficiency, the rotational speed can be changed in various ways, and stable and high efficiency operation is achieved in the entire rotational speed range. Accordingly, there is an advantage of reducing noise while driving the blower and reducing power consumption.

In addition, the blower of the present invention has the advantage that can be effectively fixed installation of the BLDC motor inside the fan housing can be reduced in size of the overall blower.

In particular, the blower of the present invention has the advantage that the blower can be manufactured by making the blower more compact and lighter by applying the rotor combined blowing fan which serves as both the rotor and the blowing fan.

Claims (42)

With an outcase; A fan housing installed inside the outer case; A supporter fixed to the fan housing; A shaft rotatably provided at the supporter; A shaft support bearing for supporting the shaft; A stator installed inside the fan housing and fixed to maintain concentricity on the supporter; It is installed to surround the stator, and includes a rotor combined blowing fan provided with a magnet for electromagnetic action with the stator inside, The supporter may include a bearing housing in which the shaft support bearing is installed therein; A supporter fixing part extending in a radial direction to the outside of the bearing housing to fix the supporter to an upper surface of the fan housing; And a stator fixing part formed at a lower end of the bearing housing part located inside the blowing fan and providing a surface on which the stator can be fixed. The method of claim 1, The rotor combined blowing fan, A mounting portion provided with the magnet on an inner circumferential surface thereof; Blowing apparatus comprising a fan portion for sucking and discharging air. The method of claim 2, The fan unit, characterized in that formed on the upper and lower sides of the mounting portion. The method according to claim 2 or 3, The fan unit blower, characterized in that made of a sirocco fan which is a centrifugal fan. The method of claim 2, Blowing device, characterized in that the mounting portion and the fan portion is formed integrally. The method of claim 2, Blowing apparatus, characterized in that the bent portion having a seating surface for supporting the magnet on the inner peripheral surface of the mounting portion is formed. The method of claim 1, The rotor combined blowing fan, Blowing apparatus, characterized in that the central axis is installed so as to be eccentric with the center line of the upper and lower surfaces of the fan housing. The method of claim 1, The rotor combined blowing fan, And a shaft connected to the shaft to rotate the shaft as a rotating shaft. The method of claim 8, An abacus for connecting the shaft to the shaft is provided on the inner side of the rotor blower fan, and a central part of the abacus is provided with a bushing for fastening with the shaft. The method of claim 9, On the abacus, A plurality of cooling fins are radially formed to inject air into the stator to cool the heat generated in the stator during rotation of the combined rotor fan, and the cooling fins are formed to have a predetermined length in the radial direction. Blower. 11. The method of claim 10, The cooling fin is formed to face the stator side by lancing, The through-hole formed by the lancing processing is characterized in that the blower serves as a vent. The method of claim 11, wherein The cooling fin is a blower, characterized in that the form bent at an angle of 90 ° with respect to the surface of the main plate. 11. The method of claim 10, In the region between the cooling fins and the cooling fins of the main plate, Embossing portion for strength reinforcement of the main plate is formed, Blowing device, characterized in that the drainage hole for water discharge is formed on the embossed portion. The method of claim 9, The bushing is, A disc-shaped base portion in close contact with the main plate surface, Blowing device characterized in that formed in the center of the base portion protruding in the axial direction, the hub portion is provided with a shaft insertion hole in the center thereof. The method of claim 14, At least one bolt fastening hole is provided on the outer circumferential surface of the hub portion, Blower device, characterized in that on the outer peripheral surface of the end of the shaft is provided with a flat section in which the bolt fastening hole is located during assembly. The method of claim 9, The bushings are two pieces, blower device characterized in that they are coupled to each other by riveting or screw fastening in a state in close contact with each of both sides of the main plate. The method of claim 9, The main plate is a blower, characterized in that installed in a position close to the fixed side of the supporter from the longitudinal center point of the dual rotor blower fan. delete delete The method of claim 1, The fan housing, An air inlet is formed on the lower surface, a through hole for motor installation is formed on the upper surface spaced a predetermined distance from the lower surface, and an air outlet is formed on one side of the side wall surface surrounding the blower fan while interconnecting the lower surface and the upper surface. Blower characterized in that. 21. The method of claim 20, And each surface of the outer case corresponding to the air inlet and the air outlet is opened, and a grill is installed on the open surface of the fan housing corresponding to the air outlet. The method of claim 1, Between the outer case and the fan housing, a blower, characterized in that the support housing for supporting the fan housing to the outer case is provided. The method of claim 1, Blowing apparatus, characterized in that the forming portion is formed on the upper surface of the fan housing to strengthen the strength. The method of claim 1, Blower device, characterized in that the shroud is provided on the inner surface of the air inlet of the fan housing. 25. The method of claim 24, And a damping pad is interposed between the fan housing and the shroud. delete The method of claim 1, Blowing device, characterized in that the end of the supporter fixing portion is bent in the upper direction of the fan housing. The method of claim 1, Blower device, characterized in that the supporter fixing portion is provided with a reinforcing rib for strength reinforcement. The method of claim 1, The stepped step formed in the lower part of the stepped parts formed on the inner circumferential surface of the bearing housing part has a “a” shape so as to form a structure supporting the upper end of the lower bearing installed in the lower side of the bearings respectively installed on the upper and lower side of the outer circumferential surface of the shaft. Formed, Blower device characterized in that the step formed in the upper step of the step formed on the inner circumferential surface of the bearing housing is formed in a "b" shape to form a structure for supporting the lower end of the upper bearing is installed on the upper side. The method of claim 1, Blowing device, characterized in that the stator fixing portion is provided with a reinforcing rib for strength reinforcement. 31. The method of claim 30, The reinforcing rib, And a plurality of blower apparatuses extending from the outer peripheral surface of the stator fixing part to the outer peripheral surface of the bearing housing part and spaced apart from each other by a predetermined interval along the outer peripheral surface of the bearing housing part. 31. The method of claim 30, The reinforcing rib is a blower, characterized in that formed in the integral rib surrounding the upper surface of the stator fixing portion and the outer peripheral surface of the bearing housing portion. The method of claim 1, Blower is characterized in that the through-hole is formed on the surface of the stator fixing portion. The method of claim 1, Blowing apparatus, characterized in that the damping member is provided between the supporter fixing portion of the supporter and the fan housing. 35. The method of claim 34, The vibration damping member, And a head portion which is in contact with the fan housing and a head portion which is inserted through the vibration damping member fixing hole formed in the supporter fixing portion and fixed to the supporter fixing portion, and has a through hole passing through the main body portion and the head portion. Blower. 36. The method of claim 35, In the head portion of the vibration damping member, When the supporter is fixed to the fan housing side, a blower is provided with a cover bracket for preventing damage to the vibration damping member caused by the clamping force acting on the fastening member such as a bolt penetrating the vibration damping member. . The method of claim 1, On the upper end of the bearing housing of the supporter, Blower device is provided with a cover for preventing foreign matters such as dust to enter into the bearing housing. The method of claim 1, The supporter and stator, Blowing device, characterized in that the positioning projection and the positioning groove that can match the concentricity when the stator is fastened to the supporter are formed to correspond to each other. The method of claim 1, On the upper surface and the supporter of the fan housing, Blowing device, characterized in that the positioning projection and the positioning groove for forming the support when the supporter is installed on the upper surface of the fan housing to correspond to each other. delete delete The method of claim 1, Blowing apparatus, characterized in that the positioning step for forming the mounting position of the bearing is formed on the outer peripheral surface of the shaft.

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