JPH05340380A - Fan rotor and cross flow fan - Google Patents

Abstract

PURPOSE:To provide an air current in a direction to be suitable for application in a fan rotor and a cross flow fan using the fan rotor. CONSTITUTION:In a fan rotor 1 comprising fan plates 3 provided at a specified interval between a pair of side plates 2a, 2b, and plural groups of blades 5a, 5b composed by providing the blades 2a, 2b, 3 with plural blades 4 along the circumference, the blade group 5a in which the blades 4 are inclined in such a way that an air current 6 is deflected toward one side plate 2a are mixed with the blade group 5b in which the blades 4 are inclined in such a way that it is deflected toward the other side plate 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan rotor and a cross flow fan using the fan rotor.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional fan rotor 51 has a pair of disc-shaped side plates 52a and 5a.
A fan plate 53 is provided upright at equal intervals between the two b, and a plurality of blade groups 55 are formed by constructing a plurality of blades 54 between the plates 52a, 52b, 53. In this blade group 55, a plurality of blades 54 are arranged in parallel to the rotation axis 57 of the fan rotor 51 passing through the centers of the plates 52a, 52b, 53 and at equal angles in the circumferential direction, and on both side plates. It is configured by being joined to 52a, 52b or the fan plate 53.

When the fan rotor 51 having the above structure rotates in the direction of arrow 58, the rotating shaft 57 is rotated.
An airflow 56 is generated in a direction orthogonal to the direction.

Further, in the cross flow fan in which the fan rotor 51 and the electric motor which is the drive source thereof are housed in the casing, the fan rotor 51 is rotationally driven by the electric motor and the suction portion opened to the casing of the cross flow fan. Air is sucked in from the air outlet, and the air flow 56 is blown out from the blowing portion which is also open.

[0005]

However, the airflow generated by the fan rotor and the airflow blown from the blowing portion of the crossflow fan are always generated in the direction orthogonal to the rotation axis of the fan rotor. However, there has been a problem that it is impossible to adjust the blowing direction of the air flow according to the purpose of use.

The present invention has been made to solve the above-mentioned conventional drawbacks, and an object thereof is to provide a fan rotor and a cross flow fan capable of obtaining an air flow in a direction suitable for the purpose of use. To do.

[0007]

In the fan rotor according to the first aspect of the present invention, a fan plate 3 is erected at a predetermined interval between a pair of side plates 2a and 2b, and each plate 2
In a fan rotor having a plurality of blade groups 5a and 5b formed by a plurality of blades 4 arranged in the circumferential direction between a, 2b and 3, the generation direction of the air flow 6 is orthogonal to the rotation axis 7. Blades 5a in which the blades 4 are inclined so as to be deflected from one direction to the one side plate 2a side, and the other side plate 2
It is characterized in that a blade group 5b in which the blades 4 are inclined so as to be deflected to the b side is mixed.

In the fan rotor of claim 2, the blade group 5a arranged on one side plate 2a side with the specific fan plate 3 as a boundary has the one side plate 2a side and the other side plate 2b side. The blade group 5b arranged in 1 is characterized in that the blade groups 5a and 5b are arranged on the other side plate 2 side so that the air flow 6 is generated by being deflected.

In the cross flow fan of claim 3, the fan plates 3 are erected at a predetermined interval between the pair of side plates 2a, 2b, and the plates 2a, 2b, 3 are also provided.
Has a plurality of blade groups 5a and 5b constructed by arranging a plurality of blades 4 in the circumferential direction, and the direction in which the air flow 6 is generated is from the direction orthogonal to the rotation axis 7 to one side plate 2a. A fan rotor 1 in which a blade group 5a in which the blades 4 are inclined to be deflected to the side and a blade group 5b in which the blades 4 are inclined to be deflected to the other side plate 2b are mixed;
It is characterized by having a drive source 12 for rotationally driving the fan rotor 1, and a casing 15 for accommodating the drive source 12 and having the suction portion 13 and the blowing portion 14 opened.

In the cross-flow fan of claim 4, the fan rotor 1 has the blade group 5a arranged on one side plate 2a side with the specific fan plate 3 as a boundary, and the blade group 5a on one side plate 2a side. , The blade group 5b arranged on the other side plate 2b side is generated so that the air flow 6 is deflected and generated on the other side plate 2b side.
The blade groups 5a and 5b are arranged.

[0011]

In the fan rotor according to claim 1 and the crossflow fan according to claim 3, the blades are arranged so that the direction of generation of the air flow 6 is deflected from the direction orthogonal to the rotation axis 7 to one side plate 2a side. Since the blade group 5a in which the blades 4 are inclined and the blade group 5b in which the blades 4 are inclined so as to be deflected to the other side plate 2b side are mixed, each blade group 5
By changing the combination of a and 5b, it is possible to generate the air flow 6 in the direction suitable for the purpose of use.

A fan rotor according to claim 2 and claim 4
In the cross flow fan, the blade group 5a arranged on the side of the one side plate 2a with the specific fan plate 3 as a boundary.
The blade group 5b arranged on the one side plate 2a side and the other side plate 2b side is arranged so that the air flow 6 is deflected and generated on the other side plate 2b side. Since 5a and 5b are combined, the air flow 6 can be generated over a wide range.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the fan rotor and crossflow fan of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a fan rotor 1 according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing a mounting state of the blades 4 of the first embodiment.

The fan rotor 1 is provided with disk-shaped side plates 2a and 2b at both ends thereof, and five annular fan plates 3 are provided between the side plates 2a and 2b. Standing at intervals. 5a, 5b
Is a blade group, and these are the side plates 2a, 2b.
The blades 4 are provided between the fan plate 3 and the fan plate 3 or between the fan plates 3 together.
In the blade groups 5a and 5b, a plurality of resin blades 4 are arranged at equal intervals in the circumferential direction. As shown in FIG. 1, the blades 4 are arranged such that their long sides are inclined with respect to the rotating shaft 7 passing through the center of each fan plate 3, and their short sides are on both sides of the resin side plate. 2a, 2
b or the fan plate 3 is welded. That is, as shown in FIG. 2, the blade 4 is twisted about the rotating shaft 7 by an angle θ and joined to each plate 2a, 2b or 3. In addition, the combination of the blade groups 5a and 5b composed of the twisted blades 4 also has the center of the fan rotor 1 (in this embodiment, the third fan plate 3 from the left side in FIG. 1) as a boundary. The twisting directions are opposite to each other. For example, in FIG. 1, when the fan rotor 1 rotates in the direction of the arrow 8, an air flow 6 is generated in the left blade group 5a by being deflected to the left side plate 2a side, and in the right blade group 5b, the right side is generated. The combination is such that the light is deflected to the side plate 2b side. The position of the boundary is not limited to the center, and may be changed according to the flow rate and direction of the airflow 6. Further, the blades 4 are curved with respect to the rotation direction of the fan rotor 1 in terms of strength and blowing performance.

Next, referring to FIG. 3, a cross flow fan 11 is provided.
Will be explained. The cross flow fan 11 includes a fan rotor 1 having the above-described configuration, an electric motor (driving source) 12 for rotationally driving the fan rotor 1, in a casing 15 in which an air intake portion 13 and an air outlet portion 14 thereof are open. Is built in. In this case, the side plate 2b of the fan rotor 1 is directly connected to the output shaft of the electric motor 12.

In the cross-flow fan 11 having the above structure, when the electric motor 12 drives the fan rotor 1 to rotate, the blade groups 5a arranged on the left side of the center of the fan rotor 1 move toward the side plate 2a on the left side. The airflow 6 is generated by being deflected, and the blade group 5b arranged on the right side is generated by deflecting the airflow 6 toward the right side plate 2b.
The airflow 6 sucked from the suction portion 13 by the fan rotor 1 is blown from the blowing portion 14 over a wide range.

FIG. 4 is a front view showing the second embodiment of the fan rotor 1. This fan rotor 1 is composed of side plates 2a and 2b, a fan plate 3 and a plurality of blade groups 5a and 5b as in FIG.
The tilting directions of are opposite to those in the case of FIG. Since the blade groups 5a and 5b are combined in this way, when the fan rotor 1 is rotated in the direction of the arrow 8, the airflow 6 can be blown toward the center of the fan rotor 1.

[0018]

As described above, in the fan rotor according to claim 1 and the crossflow fan according to claim 3, since the blade groups having different blade inclination states are mixed, the air flow in the direction suitable for the purpose of use is mixed. Can be obtained.

According to the second and fourth aspects, it is possible to blow the air flow over a wide range.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a fan rotor of the present invention.

FIG. 2 is a perspective view showing a mounting state of the blade of the invention.

FIG. 3 is a front view showing an embodiment of the cross flow fan of the present invention.

FIG. 4 is a front view showing a second embodiment of the fan rotor.

FIG. 5 is a front view showing a conventional fan rotor.

FIG. 6 is a perspective view showing a mounting state of the blade of the conventional example.

[Explanation of reference numerals] 1 fan rotor 2a side plate 2b side plate 3 fan plate 4 blades 5a blade group 5b blade group 6 air flow 7 rotating shaft 12 drive source 13 suction portion 14 blowout portion 15 casing

Claims (4)

[Claims] 1. A fan plate (3) is erected at a predetermined interval between a pair of side plates (2a), (2b), and a circumference is provided between the plates (2a), (2b), (3). A group of blades (5
a) In a fan rotor having a plurality of (5b), the blades (4) are arranged so that the direction of generation of the airflow (6) is deflected from the direction orthogonal to the rotation axis (7) to one side plate (2a) side. ) Is mixed with a blade group (5a) having inclined blades and a blade group (5b) having inclined blades (4) so as to be deflected to the other side plate (2b) side. .. 2. A blade group (5a) arranged on one side plate (2a) side with a specific fan plate (3) as a boundary.
The blade group (5b) arranged on the one side plate (2a) side and the other side plate (2b) side, on the other side plate (2b) side, the air flow (6), respectively. Of the blades (5
2. A) and (5b) are arranged.
Fan rotor. 3. A fan plate (3) is erected at a predetermined interval between a pair of side plates (2a) (2b), and a circumference is provided between each of the plates (2a) (2b) (3). A group of blades (5
a) a plurality of blades (5b) are provided, and the blades (4) are arranged so that the direction of generation of the airflow (6) is deflected from the direction orthogonal to the rotation axis (7) to one side plate (2a) side. A fan rotor (1) which is a mixture of an inclined blade group (5a) and a blade group (5b) in which the blades (4) are inclined so as to be deflected to the other side plate (2b) side, and A drive source (12) for rotationally driving the fan rotor (1), and a casing (15) for accommodating the drive source (12) and having an inlet (13) and an outlet (14) open. A cross flow fan. 4. The blade group (5a) arranged on one side plate (2a) side of the fan rotor (1) with a specific fan plate (3) as a boundary, the one side plate (2a). ) Side, and the blade group (5b) arranged on the other side plate (2b) side, the air flow (6) is deflected and generated on the other side plate (2b) side, The cross flow fan according to claim 3, wherein the respective blade groups (5a) (5b) are arranged.