JPH1082397A - Blower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compact a blower and to blow air in directions of both sides of a sirocco fan. SOLUTION: An electric motor 6 is constituted of a ring rotor 8 and a stator 10 to support the rotor 8 free to rotate. A plural number of magnets constituting the electric motor are arranged on an outer periphery of the rotor 8, an iron core is arranged on an inner periphery of the stator 10 and a coil is installed on each yoke of the iron core. When this coil of the electric motor 6 is properly electrified, the rotor 8 is rotated by interaction between the magnetized iron core of the stator and the magnets installed on the rotor 8. Consequently, blade bodies 18 are rotated, air flows in a direction shown with an arrow B and it is ventilated outside, for example, from a diffuser of an air conditioner. Additionally, as blade bodies 20 are simultaneously rotated at this time, air currents are generated in both side directions (direction of an arrow C) of a sirocco fan 4 from both side end parts of the sirocco fan 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a blower using a sirocco fan.

[0002]

2. Description of the Related Art For example, in a home air conditioner (air conditioner), a blower using a sirocco fan is used to send out cool air or warm air. The sirocco fan has a structure in which a large number of blades are formed extending at intervals along the cylindrical side surface, and the air is pressed and sent by centrifugal force by rotating about a cylindrical central axis. Has become. The electric motor that rotationally drives the sirocco fan is usually disposed outside one end of the sirocco fan, and the output shaft of the electric motor is connected to the end of the sirocco fan by a predetermined connecting means to rotate the sirocco fan. Has become.

[0003]

However, as a result of such a configuration, it is necessary to always provide a space for arranging the electric motor outside the end of the sirocco fan, which reduces the width of the air conditioner. This is one of the obstacles to downsizing. In particular, if the air volume is to be increased, a large motor must be used, which makes it more difficult to make the air conditioner compact. In addition, a sirocco fan cannot blow air in both directions, so air stagnation areas are created on both sides of the air conditioner.
Undesirable due to room ventilation design. To improve this,
Attempts are made to eliminate the air stagnation region by changing the direction of air blowing with a vane or the like at the air outlet of the air conditioner. However, sufficient effects have not always been obtained. Therefore, an object of the present invention is to provide a blower that is compact and can blow air in both sides of a sirocco fan.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a plurality of cylindrical outer circumferential surfaces which are spaced apart in the circumferential direction and are extended in the axial direction of the cylindrical shape. An air blower comprising: a sirocco fan comprising: one wing body; a connecting member that connects the wing bodies at both longitudinal ends of the plurality of first wing bodies; and a driving unit that rotationally drives the sirocco fan. The driving means includes a rotor of an electric motor configured such that the connection member is formed in a circular shape, a support means for rotatably supporting the rotor at an outer peripheral portion of the rotor, and an outer portion of the rotor. And a stator of the electric motor, which is arranged with a gap formed between the rotor and the rotor.

According to the present invention, the connecting member is formed in an annular shape, and is projected inside the rotor at an interval in the circumferential direction of the rotor and inward of the radius of the rotor. In this case, a plurality of second blades for generating an airflow in the axial direction of the cylindrical shape are provided. The present invention is also characterized in that the driving means is provided at one end or both ends of the sirocco fan in the extending direction of the first blade body. The present invention is further characterized in that an air passage for guiding the air flow generated by the second blade body is provided, and a first shutter for opening and closing the air passage is further provided. The present invention is further characterized in that a second shutter for opening and closing an air passage for guiding an air flow generated by the first blade body is provided.

Since the blower of the present invention has a structure in which a motor is directly formed at the end of a sirocco fan, the motor is provided on the side of the sirocco fan and its output shaft is connected to the sirocco fan as in the prior art. As compared with the case, the entire width can be significantly reduced, which is effective for making the apparatus compact. Further, in the blower of the present invention in which the blade body is disposed inside the rotor, it is possible to blow air in the side direction of the sirocco fan,
For example, when incorporated in an air conditioner, a good ventilation design can be realized by eliminating the stagnant area of air which has conventionally occurred on both sides of the air conditioner.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional front view showing an example of a blower according to the present invention, FIG. 2 is a perspective view of the same, and FIG. 3 is a partially enlarged sectional view showing a portion of the electric motor in detail. This blower 2
Is a sirocco fan 4 as shown in FIGS.
And an electric motor 6 as its driving means. The electric motor 6 includes a rotor 8 formed in an annular shape, and a stator 10 also formed in an annular shape and arranged outside the rotor 8 in the radial direction. The outer periphery of the rotor 8 and the inner periphery of the stator 10 are both formed in a circular shape. As shown in FIG. 3, bearings 9 are arranged on both sides of the rotor 8 and the stator 10, respectively. . Therefore, the stator 10 also functions as support means for the rotor 8, and the rotor 8 is rotatably supported by the stator 10 at the outer peripheral portion.

[0008] A plurality of magnets 11 for constituting an electric motor are arranged on the outer periphery of the rotor 8. On the other hand, stator 1
An iron core 12 is provided on the inner periphery of the core 0, and a winding 14 is mounted on each yoke of the iron core 12. Thus, a DC motor is configured, and the rotor 8 is rotated by appropriately supplying a current to the winding 14. The stator 10 is housed in an annular casing 16 as a whole.

The sirocco fan 4 has an elongated blade body 18.
(Corresponding to the first blade body), which are parallel to the central axis of the cylindrical shape and extend at intervals along the outer periphery of the cylindrical shape, and both ends thereof are the rotating members which are connecting members. It is fixed to the child 8.

In this embodiment, a plurality of blades 20 (corresponding to a second blade) are also provided inside the rotor 8. These blades 20 extend in the radial direction of the rotor 8 at intervals from each other, and the outer ends are fixed to the inner surface of the rotor 8.

FIG. 4 is a partial sectional side view showing a state where the blower 2 is incorporated in an air conditioner as an example, FIG. 5 is a partial sectional front view thereof, and FIG. 6 is a sectional front view thereof. In this example, as shown in FIG. 4, the air blower 2 is arranged with a space 26 secured in the middle of an air flow path 24 provided below the air conditioner 22. Also, as shown in FIGS. 5 and 6,
A duct 28 is formed outside the electric motor 6, and the
Is configured to guide the airflow generated by the airflow in an appropriate direction.

In such a configuration, when the winding 14 of the electric motor 6 is appropriately energized, the interaction between the magnetized iron core 12 of the stator 10 and the magnet mounted on the rotor 8 causes the rotor to rotate. 8 rotates. As a result, the blade body 18 rotates, for example, in the direction of arrow A (FIG. 4), and air flows in the air path 24 in the direction indicated by arrow B, and is blown to the outside from the outlet 30 of the air conditioner 22. At this time, the wing body 20
Also rotates at the same time, so that both sides of the sirocco fan 4 are moved from both side ends of the sirocco fan 4 (arrows C and C ′ in FIG. 1).
Airflow). In the air conditioner 22, this air flow is guided by a duct 28 as shown by an arrow D as shown in FIGS. 5 and 6, and is accurately sent to both sides of the air conditioner 22.

As described above, the blower 2 of the present embodiment has a structure in which the motors 6 are directly formed at both ends of the sirocco fan 4, so that the motors 6 are separately provided as in the conventional case and the output shaft thereof is connected to the sirocco fan. Compared to connecting to fan 4,
The overall width can be greatly reduced, which is effective for making the apparatus compact. In addition, since the blades 20 are arranged inside the rotor 8, air can be blown to the side of the sirocco fan 4 as well, thereby eliminating a stagnant area of air on both sides of the air conditioner and realizing a good ventilation design. it can.

The above embodiment is merely an example, and the present invention is not limited to this and can be implemented in various forms. For example, it is also possible to delete the blade body 20 provided inside the rotor 8 and use the rotor 8 having a shape in which this portion is closed. In this case, air cannot be blown to the side of the sirocco fan 4, but since the electric motors 6 are directly formed at both ends of the sirocco fan 4, the apparatus can be made compact.

FIG. 7 is a sectional side view showing a case where a shutter is provided at the outlet 30 of the air passage 24. As shown in this figure, the outlet 3 of the air passage 24 of the air conditioner 22
If the shutter 32 is provided so that the shutter 32 can be opened and closed as needed, when the shutter 32 is closed, all the air guided into the air passage 24 is discharged laterally from both ends of the sirocco fan 4. The airflow to the side can be strengthened.

As shown in the sectional front view of FIG. 8, a partition plate 34 is provided at the center of the sirocco fan 4, and for example, a shutter 36 is provided only at the outlet 30 of the air passage 24 on the right side thereof. When a shutter 38 is provided outside the blade body 20 of the motor 6 on the left side, when both the shutters 36 and 38 are closed as shown in the figure, the right side of the sirocco fan 4 On the other hand, on the left side of the sirocco fan 4, an airflow (arrow B) with an original sufficient air volume is generated by the sirocco fan 4. Thus, by appropriately arranging various shutters and the like and controlling their opening and closing,
Various airflows can be generated, and the air conditioning of the room can be effectively performed.

Although the blower 2 shown in FIG. 1 has a structure in which the electric motors 6 are formed at both ends of the sirocco fan 4, the electric motor 6 is formed only at one end of the sirocco fan 4 to drive the sirocco fan 4. It is also possible. Further, the motor 6 may be an AC motor such as an induction motor in addition to the DC motor as described above. Further, as a means for supporting the rotor 8, a first magnet is arranged in a circumferential direction of the rotor 8 on an outer peripheral portion of the rotor 8, and a repulsive force is applied between the first magnet and the outside of the rotor 8. It is also possible to arrange the second magnet on which the action is effected by arranging it in the circumferential direction of the rotor 8 with an interval between the second magnet and the first magnet. In this case,
Since the rotor 8 is supported in a non-contact manner, the efficiency of the electric motor 6 can be improved, and operation with low noise is possible.

[0018]

As described above, the present invention provides a large number of first blade bodies which are arranged on the outer peripheral surface of a cylindrical shape and are arranged at intervals in the circumferential direction and extend in the axial direction of the cylindrical shape. , Many first
A sirocco fan comprising a connecting member for connecting the respective wings at both ends in the longitudinal direction of the wing, and a driving means for driving the sirocco fan to rotate, wherein the driving means has a circular shape. A rotor of an electric motor configured and formed, a support means for rotatably supporting the rotor at an outer peripheral portion of the rotor, and a gap between the rotor and the outside of the rotor. Formed and arranged,
The motor was equipped with a stator. The present invention also provides
The connecting member is formed in an annular shape, and is protruded inward of the rotor at an interval in a circumferential direction of the rotor inside the rotor at an interval in a circumferential direction of the rotor. When the rotor rotates, the cylindrical shaft is rotated. The configuration is such that a plurality of second blades that generate airflow in the direction of the center are provided. Therefore, the blower of the present invention has a structure in which electric motors are directly formed at both ends of the sirocco fan, and when the electric motor is provided on the side of the sirocco fan and its output shaft is connected to the sirocco fan as in the related art. In comparison, the overall width can be greatly reduced, which is effective for making the apparatus compact. Further, in the blower of the present invention in which the blade body is disposed inside the rotor, it is also possible to blow air in the side direction of the sirocco fan, for example, when incorporated in an air conditioner,
Conventionally, a good ventilation design can be realized by eliminating a stagnant area of air generated on both sides of the air conditioner.

[Brief description of the drawings]

FIG. 1 is a sectional front view showing an example of a blower according to the present invention.

FIG. 2 is a perspective view showing an example of a blower according to the present invention.

FIG. 3 is a partially enlarged sectional view showing a motor part in detail.

FIG. 4 is a sectional side view showing a state where the blower is incorporated in an air conditioner.

FIG. 5 is a partial cross-sectional front view showing a state where the blower is incorporated in an air conditioner.

FIG. 6 is a sectional front view showing a state where the blower is incorporated in an air conditioner.

FIG. 7 is a cross-sectional side view showing a case where a shutter is provided at an outlet of an air passage of an air conditioner.

FIG. 8 is a sectional front view showing a blower provided with a shutter and a partition plate.

[Explanation of symbols]

 Reference Signs List 2 blower 4 sirocco fan 6 motor 8 rotor 18 wing body 20 wing body 22 air conditioner 24 blast passage 30 outlet 32, 36, 38 shutter

Claims (5)

[Claims] 1. A large number of first cylindrical members arranged on an outer peripheral surface of a cylindrical shape so as to extend in the axial direction at intervals in the circumferential direction thereof.
A fan comprising: a sirocco fan comprising: a blade member; a connecting member connecting the blade members at both longitudinal ends of the plurality of first blade members; and driving means for rotating and driving the sirocco fan. Driving means, a rotor of the electric motor, wherein the connecting member is formed in a circular shape, a supporting means for rotatably supporting the rotor at an outer peripheral portion of the rotor, and outside the rotor, And a stator of the electric motor, which is disposed with a gap formed between the rotor and the rotor. 2. The connecting member is formed in an annular shape, and protrudes inside the rotor at an interval in a circumferential direction of the rotor and inward of a radius of the rotor, and the rotor rotates. The blower according to claim 1, further comprising a plurality of second blades that generate an airflow in the axial direction of the cylindrical shape. 3. The blower according to claim 1, wherein the driving means is provided at one end or both ends of the sirocco fan in the extending direction of the first blade body. 4. The blower according to claim 2, further comprising: an air passage for guiding an air flow generated by the second blade body; and a first shutter for opening and closing the air passage. 5. The blower according to claim 2, further comprising a second shutter that opens and closes an air passage that guides an air flow generated by the first blade body.