KR100931250B1 - Ceiling type air conditioner and motor of ceiling type air conditioner - Google Patents

Abstract

Ceiling air conditioner according to the present invention is a cabinet; An air inlet formed on a lower surface of the cabinet to suck external air; A turbo fan which blows air sucked upwardly through the suction port to the side; An outer rotor motor inserted into the turbofan almost entirely and fixed to at least a portion of the turbofan's hub; A heat exchanger provided outside the turbo fan; And it characterized in that it comprises a discharge port for discharging the air heat exchanged by the heat exchanger.

Since the vertical height of the ceiling air conditioner is reduced according to the present invention, even when the indoor space is narrow, the ceiling air conditioner can be easily installed and the degree of freedom of installation is increased. In addition, since the ceiling air conditioner is more compactly provided, there is an advantage that it is easy to manufacture, transport and install.

Ceiling type air conditioner, outer rotor motor

Description

Ceiling embedded air conditioner and motor for the same}

1 is a cross-sectional view of a ceiling air conditioner according to the present invention.

FIG. 2 is an enlarged view of the outer rotor motor part in the ceiling air conditioner shown in FIG. 1; FIG.

3 is a perspective view of the shaft support housing according to the present invention;

4 is a perspective view of a bushing according to the present invention;

5, 6 and 7 are cutaway sectional views of the rotor frame illustrating a process of forming the rotor frame.

8 is a sectional view of an outer rotor motor according to a second embodiment of the present invention.

9 is a sectional view of an outer rotor motor according to a third embodiment of the present invention.

10 is a sectional view of an outer rotor motor according to a fourth embodiment of the present invention.

11 is a sectional view of an outer rotor motor according to a fifth embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

1: cabinet 2: outer rotor motor 3: hub

4: blade 5: shroud

The present invention relates to a ceiling-type air conditioner, and more particularly, to a motor of a ceiling-type air conditioner to reduce the overall height of the ceiling-type air conditioner to reduce the installation space of the air conditioner to facilitate the installation of the air conditioner.

In general, the air conditioner is classified according to the installation location, it is divided into a type of air conditioner to be placed on the indoor floor, wall-mounted type used to hang on the wall, and ceiling type air conditioner to be used in the space between the ceiling and ceiling finishes. In particular, the present invention is of primary interest in the ceiling air conditioner.

 The ceiling air conditioner is installed in the ceiling area of the room so as to occupy little space. In detail, in the state of being installed between the ceiling side wall forming the skeleton of the building and the ceiling finishing material, the operation is performed to suck the indoor air, cool down and lead back to the room.

On the other hand, the space between the ceiling side wall and the ceiling finish is called 'fast' to those skilled in the art, and the height is different depending on the condition of the building. However, when the ceiling-type air conditioner is mounted in the space of the lie, if the ceiling-type air conditioner is smaller than the gap of the lie, the installation may be performed by a method such as suspending the ceiling-type air conditioner to the ceiling wall. However, if the height of the ceiling-type air conditioner is larger and larger than the ceiling-type air conditioner has to come down to the lower side of the ceiling finish, there is a problem causing a great inconvenience for the consumer.

Of course, since the size is accommodated in the interior space of the ceiling in the front, rear, left and right directions of the ceiling type air conditioner does not cause much inconvenience to the user.

As a method of solving the problem related to the size of the ceiling air conditioner, there is a method of appropriately increasing the height of the fastening from the design of the building in anticipation of the installation of the ceiling air conditioner. do.

As another method, there is a method in which a predetermined structure is additionally mounted to the protruding portion of the air conditioner so that the part that sags to a lower side of the ceiling finish is not visible to the user. However, such a method has a disadvantage in that it cannot be applied as a method of preventing the ceiling air conditioner from protruding.

On the other hand, the factors that occupy the upper and lower heights in the ceiling type air conditioner are the fan installation height, the heat exchanger installation height and the motor installation height. Among these, the installation height of the heat exchanger is an essential element for showing the cooling performance, and the installation height of the fan is an essential element for obtaining the expected air volume, and thus has a great influence on the performance of the ceiling type air conditioner. There are limits to improving the structure.

Under the background described above, the present invention is to propose a method of improving the structure of the motor so that the height of the ceiling air conditioner is lowered.

The present invention has been proposed to improve the above problems, the object of the present invention is to improve the structure of the motor occupying a large height in the interior of the ceiling air conditioner, and to propose a motor of the ceiling air conditioner and the ceiling air conditioner to reduce the overall height of the ceiling air conditioner do.

In addition, by reducing the installation height of the ceiling-type air conditioner, an object of the present invention is to propose a motor of the ceiling-type air conditioner and the ceiling-type air conditioner that is easily installed in various types of environments in which the degree of freedom of installation of the ceiling-type air conditioner is enhanced and provides convenience to the user.

In addition, an object of the present invention is to propose a ceiling-type air conditioner and a motor of the ceiling-type air conditioner, which is more compact, thereby making transportation and fabrication more convenient.

Ceiling type air conditioner according to the present invention for achieving the above object is a cabinet; An air inlet formed on a lower surface of the cabinet to suck external air; A turbo fan which blows air sucked upwardly through the suction port to the side; An outer rotor motor inserted into the turbofan almost entirely and fixed to at least a portion of the turbofan's hub; A heat exchanger provided outside the turbo fan; And a discharge port through which the air heat-exchanged by the heat exchanger is discharged.

According to another aspect of the present invention, a ceiling air conditioner includes a cabinet; A suction port formed under the cabinet to suck outside air; A turbo fan which blows air sucked upwardly through the suction port to the side; An outer rotor motor placed inside the turbofan, the rotor being insert injected into the hub of the turbofan; A heat exchanger provided outside the turbo fan; And a discharge port through which the air heat-exchanged by the heat exchanger is discharged.

According to another aspect, a ceiling air conditioner of the present invention includes a cabinet; An inlet formed in a lower surface of the cabinet to suck outside air; A turbo fan which blows air sucked upwardly through the suction port to the side; An outer rotor motor placed inside the turbofan; A heat exchanger provided outside the turbo fan; And a discharge port through which air heat-exchanged by the heat exchanger is discharged, wherein the hub of the turbofan and the rotor of the outer rotor motor are integrally formed.

According to another aspect of the present invention, a motor of a ceiling air conditioner includes a stator inserted into a hub of the turbo fan to rotate a turbo fan, a stator placed inside to apply an electric field, a rotor placed outside of the stator, and a stator; A drive shaft is supported together with the rotor, and a magnet is fixed to the inner side of the hub to generate a magnetic field corresponding to the electric field.

The proposed ceiling type air conditioner has the advantage of more convenient and free installation of the ceiling type air conditioner, the size of the ceiling type air conditioner, in particular, the height of the ceiling type air conditioner is lowered while the same or superior performance is exhibited.

Hereinafter, with reference to the drawings propose a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the specific embodiments proposed.

First embodiment

1 is a cross-sectional view of a ceiling air conditioner according to the present invention.

The ceiling air conditioner according to the present invention is formed in the gap between the ceiling wall 95 and the ceiling finish 96 of the indoor space.

The detailed description of the structure of the ceiling type air conditioner includes a cabinet 1 forming an exterior, an outer rotor motor 2 extending downward from an upper side inside the cabinet 1, and the outer rotor. A turbo fan is formed in combination with a drive shaft of an outer rotor motor 2, and the turbo fan has a hub 3 fixed to the outer rotor motor 2 and a hub 3 fixed to the hub 3. A blade 4 for allowing air to be blown and a shroud 5 for supporting the blade 4 below are included.

In addition, a suction port 6 formed in the lower center of the ceiling air conditioner, a heat exchanger 9 through which the air blown from the turbo fan is cooled, and a discharge port through which air cooled by the heat exchanger 9 flows. (7) and discharge vanes (8) formed at the end of the discharge port (7) to adjust the wind direction.

In particular, the outer rotor motor 2 refers to a motor in which a stationary stator is placed at the center of the motor and a rotating rotor is placed outside of the stator. The outer rotor motor 2 ) Occupies a relatively large space in front, rear, left and right, but is generally provided in a narrow height up and down. Since the outer rotor motor 2 may be formed to have a relatively narrow upper and lower thickness, the outer rotor motor 2 is almost entirely inserted into the inner space of the turbo fan under the same conditions, so that the outer rotor motor 2 is The internal space can be reduced. In particular, since the mutual height of the ceiling-type air conditioner can be formed small, there is no problem even when installed in a low-indoor indoor space.

The ceiling air conditioner as described briefly describes its operation.

When the operation of the ceiling type air conditioner is started, the outer rotor motor 2 is rotated, and when the motor is rotated, the turbo fan composed of the hub 3, the blade 4, and the shroud 5 is also rotated. When the turbo fan is rotated, the air is sucked through the inlet 6 and then guided to the heat exchanger 9 to perform heat exchange, and the heat exchanged air is guided to the outlet 7 and then discharges the vane 8. It is discharged to the room through.

The present invention described above is characterized in that the structure of the motor and the turbofan used in the operation of the ceiling air conditioner and its coupling structure is improved. In detail, since the installation space of the motor is configured to be narrow up and down, the overall height of the ceiling air conditioner is provided low, and the overall height of the ceiling air conditioner is provided low, so that the ceiling air conditioner can be installed in a wide range of low-speed spaces. have.

In order to achieve such a configuration, the motor and the turbofan take a specific structure with each other. Hereinafter, the mutual relationship between the outer rotor motor 2 and the turbofan will be described in detail.

FIG. 2 is an enlarged view of the outer rotor motor part in the ceiling air conditioner shown in FIG. 1.

Referring to FIG. 2, there is shown a stator 31 in which a coil 33 is wound around a core, a rotor 40, and a hub 3 fixed to an outer rim of the rotor 40. In addition, the hub 3 may be integrally formed with the blade 4 so that when the rotor 40 is rotated, a blowing operation of the turbo fan may be performed.

The rotor 40 may include a rotor frame 41 made of metal constituting the main body of the rotor 40, a shaft support housing 60 through which a driving shaft 25 is inserted to transmit rotational force to the driving shaft 25, and The bushing 70 is seated and fixed to the rotor frame 41 after injection molding is formed while the shaft supporting housing 60 is inserted. And a nut 76 for fixing the drive shaft 25 after the drive shaft 25 is inserted into the shaft support housing 60.

The configuration of the rotor 40 will be described in more detail.

The rotor 40 includes a rotor frame 41 made of a metal such as iron, a magnet 46 formed on an inner side of a portion that is bent upward from an outer end of the rotor frame 41, and the bent portion. A back yoke 45 formed on an outer surface of the reinforcement portion, and an outer end portion of the rotor frame 41 is bent outwardly and / or downwardly so that the strength of the rotor frame 41 is reinforced; The back yoke 45 is firmly fixed to the rotor frame 41 and includes an injection part 48 for preventing the rotor 40 from falling even when the rotor 40 is rotated. In order for the coupling between the rotor frame 41 and the injection part 48 to be firmly performed during the injection molding process of the injection part 48, a predetermined position of the rotor frame 41 that the injection part 48 touches. The resin attachment part 47 is formed in the. While the injection part 48 is being molded, the resin constituting the injection part 48 may also be injected into the resin attachment part 47, so that the coupling between the injection part 48 and the rotor frame 41 may be performed. It can be made more robust. In addition, the back yoke 45 may be firmly fixed by the injection part 48. The resin attachment portion 47 may be a hole formed through the rotor frame 41 or a recess formed groove.

The hub 3 is formed during the process of forming the injection part 48, and the hub 3 has already been described as one component of the turbofan. As such, the hub 3 may be formed together during the forming process of the outer rotor motor 2, so that the forming process of the motor and the turbo fan may be more conveniently performed. However, when the hub 3 is difficult to be formed during the process of forming the injection part 48 due to difficulty in the injection process, the injection part 48 is provided in a relatively small size and includes the hub 3. The turbofan may be separately formed and then coupled to each other.

In addition, the fan is bent in a horizontal position of the rotor frame 41 by bending at a predetermined position on the horizontal plane of the rotor frame 41 to generate a forced wind tunnel when the rotor 40 rotates, thereby cooling the internal parts of the motor ( 42). In addition, at a predetermined position between the fans 42, the horizontal surface of the rotor frame 41 is deformed into a predetermined shape, and a reinforcing forming part 43 for reinforcing the strength of the rotor frame 41 is processed.

The fan 42 causes a forced wind tunnel to be generated when the rotor frame 41 rotates, so that air flow is transmitted to the motor, in particular, the side of the stator 31. By such forced air flow, moisture such as dew, which may be generated by the temperature change of the ceiling type air conditioner, can be easily evaporated by the convection action. Furthermore, the motor is cooled to prevent the motor from overheating.

The reinforcing forming unit 43 is to prevent the deformation of the rotor frame 41 during the high-speed rotation of the motor up to 2,000rpm, so that the washing machine can operate normally. The fan 42 and the reinforcing forming part 43 may be naturally processed by a process of pressing a predetermined form after a predetermined iron plate is cut by a punching operation.

On the other hand, the bushing 70 is injection molded in the state of being inserted into the shaft support housing (60). Then, after the shaft support housing 60 is placed on one side of the rotor frame 41 in the injection molded state of the bushing 70, the rotor frame 41 by a predetermined fastening member exemplified by a bolt. Is coupled to. Since the bushing 70 is an insulator as a resin material, the rotor frame 41 is not energized with the shaft support housing 60 even if dew occurs due to cold temperature.

In detail, the inner circumference of the predetermined hole formed in the center of the shaft support housing 60 is in contact with the serration formed on the outer circumferential surface of the drive shaft 25 so that the drive shaft 25 can be rotated accurately. A portion 62 is formed. And when the bushing 70 is injection molded in the state in which the shaft support housing 60 is inserted, in order to prevent peeling or detachment between the bushing 70 and the shaft support housing 60, the shaft support housing 60 The outer surface of the projection 61 and the outer serration 63 is formed.

As such, after the bushing 70 is molded to insert the shaft support housing 60, the bushing 70 is fixed to one side of the rotor frame 41. Hereinafter, the bushing 70 and the rotor frame 41 are fixed. The fixing of will be described.

The contact portion between the bushing 70 and the rotor frame 41 should be such that the bushing 70 does not fall by the shear stress generated when the rotor 40 rotates. In other words, the torque generated in the magnet 46 due to the electromagnetic interaction between the stator 31 and the magnet 46 is transmitted to the drive shaft 25 through the rotor frame 41 in a stable manner. In order to be performed is via the rotor frame 41 and the bushing (70). At this time, the bushing 70 is to be firmly fixed to the rotor frame 41 so that the torque is transmitted stably.

To this end, the bushing 70 has a mounting protrusion 71 which extends downward from at least two locations on the lower side of the bushing 70 and a bolt 74 formed through the bushing 70. The bushing side fixing hole 72 for inserting is formed. The mounting protrusion 71 is formed with a cooling hole 73 formed inside the mounting protrusion 71 in order to prevent deformation of the mounting protrusion 71 at the time of cooling after being injected.

In addition, a seating guide 49 for inserting the seating protrusion 71 into the rotor frame 41 corresponding to the bushing 70 to guide the position of the bushing 70, and the bushing side fixing hole 72. The frame side fixing hole 50 formed at the corresponding position is included.

A process in which the bushing 70 is fixed to the rotor frame 41 will be described. At this time, of course, the shaft support housing 60 is inserted into the bushing 70.

In order to conveniently locate the exact position on which the bushing 70 is placed, the seating protrusion 71 is inserted into the seating guide 49. In particular, since the seating protrusion 71 and the seating guide 49 are formed in at least two places, the bushing 70 may be placed at the correct position. In addition, a center frame 51 into which the bushing 70 may be fitted is formed at the center of the rotor frame 41, and a center portion of the bushing 70 is formed in a shape corresponding to that of the bushing 51. . Meanwhile, the seating protrusion 71 and the seating guide 49 not only allow the bushing 70 to be conveniently mounted, but also separate the bushing 70 from the rotor frame 41 when the rotor 40 is rotated. Is prevented, and also serves to prevent breakage of the bushing 70. In the state where the mounting protrusion 71 is inserted into the mounting guide 49, the frame side fixing hole 50 and the bushing side fixing hole 72 are aligned in a line.

After the bushing 70 is conveniently seated on the set frame 51 of the rotor frame 51 by the seating protrusion 71 and the seating guide 49, the bolt 74 is fixed to the frame side fixing hole 50. ) And the bushing side fixing hole 72, the nut 75 is inserted into the end portion and fastened. The bushing 70 is firmly fixed to the rotor frame 41 by the bolt 74 and the nut 75. In addition, the seating protrusion 71 and the bushing side fixing hole 72 may be formed at the same distance from the center of the bushing 70 at equal intervals to be balanced.

3 is a perspective view of the shaft support housing according to the inventive concept.

Referring to FIG. 3, the shaft support housing 60 has a cylindrical shape as a whole, and a drive shaft 25 is inserted into a hole formed up and down, and the shaft support housing 60 includes the bushing 70 having a liquid injection liquid. The insert is fixed to the bushing 70 and one body during injection. At least one protrusion 61 having a relatively large size is formed at the outer edge of the shaft support housing 60 so that the position of the shaft support housing 60 is firmly fixed while the bushing 70 is inserted into the insert. The outer serration 63 is formed on the upper side of the protrusion 61, and the lower side of the outer serration 63 is inserted into the bushing 70 to withstand shear stress more strongly.

In addition, the hole in which the drive shaft 25 is inserted is formed with an inner serration 62 which is formed to be elongated up and down, and the shaft support housing 60 and the drive shaft (when operated in the inserted state). 25) to prevent slipping between each other. The shaft support housing 60 may be made of a sintered metal to be more conveniently manufactured.

4 is a perspective view of a bushing according to the invention.

Referring to FIG. 4, the shaft support housing 60 is formed at the center of the bushing 70 to be integrally injected at the time of forming the bushing 70 and firmly fixed in position. And the inner serration 62 is formed in the center portion of the shaft support housing 60 in the vertical direction to form a hole into which the drive shaft 25 is inserted, and the bushing 70 and the shaft support housing 60 are coupled to the outer circumference. An outer serration 63 is formed to increase the degree.

In addition, a seating protrusion 71 and a bushing side fixing hole 72 are formed on one side of the bushing 70 at three equal intervals.

5, 6 and 7 are cutaway cross-sectional views of the rotor frame illustrating a process of forming the rotor frame.

5 to 7, a magnet 46 and a back yoke 45 are formed on the side walls of the rotor frame 41, respectively. In FIG. 5, the back yoke 45 is not yet attached. In FIG. 6, the state after the back yoke 45 is attached is shown. The back yoke 45 may be formed by any method such as welding, bonding, or fitting. FIG. 7 illustrates a state in which the injection part 48 is formed by insert injection to the outside adjacent to the back yoke 45. In addition, a resin attachment portion 47 is formed at the side end of the rotor frame 41 so that the injection portion 48 is firmly fixed to the rotor frame 41 during the formation of the injection portion 48. have. In this way, the injection part 48 is formed by covering the back yoke 45 as a whole, so that the back yoke 45 may be firmly attached without being separated during the rotation of the rotor 40. The back yoke 45 may not only form a magnetic circuit as described above, but also reinforce the strength of the outer end of the rotor frame 41 to strongly resist external vibration.

On the other hand, the portion extending to the outside of the injection portion 48 forms a hub (3) because the hub (3) constitutes one configuration of the turbofan, in conclusion, the turbofan has a rotor frame (41) ) Is a fixed form, there is an advantage that does not need to combine the turbo fan and the outer rotor motor (2) separately.

In other words, when the turbo fan is injected while the rotor frame 41 is inserted into the mold, the rotor frame 41 and the turbofan assembly may be easily manufactured. However, when it cannot be integrally injected due to a problem such as a specification of the turbo fan, a turbo fan manufactured separately to the injection part 48 may be coupled.

Second embodiment

8 is a view for explaining a second embodiment of the present invention.

Referring to FIG. 8, the second embodiment is the same as or similar to the original embodiment in other parts, except that the bushing 70 is fixed upward from the bottom of the rotor frame 41. In other words, as in the original embodiment, the shaft support housing 60 is fixed to the inside of the bushing 70 by a process in which the shaft support housing 60 is inserted into and ejected from the bushing 70. However, unlike the original embodiment, the mounting protrusions 71 are protruded to the upper side of the bushing 70, and there is a difference only in that the set frame 51 protrudes to the upper side of the rotor frame 41. By this structure, the bushing 70 is placed from the lower side to the upper side of the rotor frame 41 and its position can be fixed.

According to this embodiment, the manufacturing yield of the rotor can be improved. In the embodiment, the description of the first embodiment may be used as it is.

Third embodiment

In the proposed first and second embodiments, since the parts having many uneven parts such as the drive shaft 25 and the bushing 70 are seated on the lower side of the outer rotor motor 2 flowing into the turbofan, the flow of air There is a fear that many flow resistances are generated. The third embodiment of the present invention is proposed to remedy the above disadvantages, so that the hub 3 is provided to cover the lower part of the outer rotor motor 2 as a whole, so that the flow noise and flow resistance of air are reduced. By doing so, the operation efficiency of the ceiling air conditioner is improved.

9 is a sectional view of an outer rotor motor according to a third embodiment of the present invention.

Referring to FIG. 9, in this embodiment, the outer rotor motor 2 and the hub 3 are formed of separate articles from each other, and the lower surface of the outer rotor motor 2 is almost entirely formed by the hub 3. Covered. Therefore, there is an advantage that the resistance to the flow of air flowing from the lower side upwards is reduced.

On the other hand, in the present embodiment, the fan 42 is not formed in the rotor frame 41, which suppresses the resistance applied to the air flowing upward by the fan 42, so that the air can flow smoothly. It is for.

In addition, in the present embodiment, the reinforcing forming part 43 is not formed because the strength of the rotor frame 41 is reinforced by the hub 3 so as to resist the impact from the outside.

In addition, in the present embodiment, only the back yoke 45 is coupled to the rotor 40 in a state in which the injection unit 48 is not provided on the outer surface of the rotor 40. Of course, the reinforcement part 44 and the resin attachment part 47 are not provided. This is because the hub 3 is coupled to the outer rotor motor 2 by a predetermined fastening tool as a separate article, so that it is not necessary to provide an injection part 48 separately.

On the other hand, since the hub 3 is not provided with a predetermined structure to allow air to enter the inside of the outer rotor motor 2, it is difficult to dissipate heat generated inside the motor. It will be easy to guess. To this end, in this embodiment, a gap having a predetermined width G1 is provided between the hub 3 and the cabinet 1, and the air discharged from the blade 4 through the gap has a constant wind speed. Allow inflow. Of course, in order to allow the air introduced through the gap G1 to escape to the outside of the motor 2, it is preferable that a vent 52 is provided at a predetermined position of the hub 3.

Fourth embodiment

In the third embodiment, since the hub 3 is provided to cover the outer rotor motor 2 as a whole, the flow resistance of the air flowing upward from the lower side of the ceiling air conditioner can be reduced to some extent. However, since it is difficult to reduce the flow resistance of air as a whole, in this embodiment, the shape of the hub 3 is proposed as a specific shape so that the flow resistance of the air is further reduced.

10 is a cross-sectional view of the outer rotor motor portion of the ceiling air conditioner according to the present invention.

Referring to FIG. 10, the outer rotor motor according to the present invention is the same as in the third embodiment in the other parts, except that the flow resistance of the air flowing upward from the lower side is provided so that the center of the hub is provided in a substantially convex form. It is characteristically different that the hub 3 is joined together by bolts 74 and nuts 72 which engage the bushing 70 and the rotor frame 41.

The configuration and operation of this embodiment will be described in detail.

In general, the most preferable way to reduce the flow resistance of the air flowing along any object is to form a continuous streamline. Therefore, even in the hub 3 of the turbofan, in order to allow the air flowing upward from the center to the side, the height thereof is preferably lowered from the center to the outside. In order to satisfy this, the hub 3 of the present embodiment is provided with a convex shape as the center is lowered to a lower side than the outer side to form a flow guide portion 83.

By doing in this way, the air which flows upward from the substantially central part can be guided out to the side smoothly, and can flow out.

In addition, in the present embodiment, the bolt seating portion 84 in which the ball 74 is seated is formed as a fastening means at a predetermined position of the hub 3, and the bolt 74 is located inside the bolt seating portion 84. The nut 72 which is caught by the other end of () is inserted. By such a structure, there is an advantage that the bushing 70, the rotor frame 41, and the hub 3 can be fastened together. Of course, the manufacturing process may be performed simply.

In other respects, since the description of the above-described embodiment may be used as it is, detailed description thereof will be omitted.

Fifth Embodiment

Although the first to fifth embodiments exemplify a case in which the rotor frame 41 is provided with metal, the spirit of the present invention is not limited thereto, and the rotor frame 41 made of plastic may be proposed. have. Hereinafter, an embodiment in which the rotor frame 41 is proposed using plastic as a material will be described in detail.

11 is a sectional view of the outer rotor motor according to the present embodiment.

Referring to FIG. 11, in the motor according to the present embodiment, the hub 3 and the rotor frame 41 are made of a single body made of plastic. A cylindrical shaft support portion 92 is formed at the center of the hub 3 so that the driving shaft 25 is inserted through the shaft support portion 92. In addition, a predetermined interlocking structure such as a serration or a key is formed at a contact portion of the shaft support part 92 and the drive shaft 25 so that both are rotated together. The hub 3 is provided with a predetermined groove 91 in which the back yoke 45 and the magnet 46 can be supported.

Configurations other than those described above have been described by a number of embodiments already described, so the description thereof is used and detailed description thereof is omitted.

According to this embodiment, although the rotor 40 may be made of plastic, the strength may be reduced, but there is an advantage in that the convenience of manufacturing is increased and the assembly is easily obtained.

Since the vertical height of the ceiling air conditioner is reduced according to the present invention, there is an advantage that the ceiling air conditioner can be easily installed and used even when the indoor space is narrow.

In addition, since the installation height of the ceiling type air conditioner is reduced, the degree of freedom of installation of the ceiling type air conditioner is enhanced and can be easily installed even in various kinds of environments, thereby increasing the convenience of the user.

In addition, since the ceiling air conditioner is more compactly provided, there is an advantage that it is easy to manufacture, transport and install.

Claims (16)

cabinet; An air inlet formed on a lower surface of the cabinet to suck external air; A turbo fan which blows air sucked upwardly through the suction port to the side; An outer rotor motor connected to the turbofan for rotating the turbofan and located inside the turbofan; A heat exchanger located outside of the turbofan; And A discharge port through which air heat-exchanged by the heat exchanger is discharged, The outer rotor motor, A stator for generating an electric field; And a rotor having a magnet moving relative to the stator, and having a fan for cooling the stator on one surface facing the stator. The method of claim 1, The outer rotor motor, And a drive shaft for rotatably connecting the rotor and the stator to each other. The method of claim 2, The magnet, the ceiling air conditioner is located on the outside of the stator with respect to the drive shaft. The method of claim 1, The rotor is a ceiling air conditioner to shield the lower surface of the stator. delete The method of claim 2, The rotor is, A rotor frame made of metal to which the magnet is fixed; A shaft support housing fixed to the drive shaft; And And a bushing made of plastic interposed between the rotor frame and the shaft support housing. The method of claim 6, The bushing is a ceiling air conditioner coupled to the shaft support housing by an insert injection method. The method of claim 6, In order to guide the relative position of the bushing and the rotor frame when the bushing and the rotor frame are combined, The bushing is provided with a seating protrusion, The rotor frame is a ceiling air conditioner having a seating guide for inserting the seating projection. The method of claim 1, The air conditioner to which the hub of the turbo fan is fixed to the rotor. The method of claim 9, The hub of the rotor and the turbofan is a ceiling air conditioner provided in a single piece of plastic material. The method of claim 9, The outer side surface of the rotor interviews the hub of the turbofan. The method of claim 11, wherein The hub of the turbofan is a ceiling air conditioner coupled to the rotor by an insert injection method. The method of claim 1, And a lower surface of the outer rotor motor is shielded by a hub of the turbo fan. The method of claim 13, In order to reduce the flow resistance of the air, the hub of the turbofan is a ceiling-like air conditioner having a convex shape overall downward. The method of claim 13, A ceiling air conditioner is provided between the cabinet and the hub of the turbofan, a gap for allowing air to flow toward the outer rotor motor. delete

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