KR102147730B1 - Blowers with BMC motor that increase ventilation volume and minimize vibration noise - Google Patents

Abstract

The present invention is provided spaced apart from both sides, and an air inlet 11 is formed on one side, and an air vent 12 is formed on the other side, and rotates in each of the housings 10 It relates to a blower having a blower fan 20 built in possible and a motor 40 provided between the pair of housings 10 to rotate the blower fans 20, wherein the motor 40 is a BMC (Bulk Molding Compound) is formed of a motor molded with resin, and the blower fan 20 is formed to have a length extending in the direction of the motor shaft so as to have a blowing force suitable for the maximum output of the motor 40, and A shaft coupling part 22 for coupling with the motor shaft is formed in the center, and the free end of the shaft part 41 of the motor 40 is rotatably supported by a plurality of motor shaft supports 50, The motor shaft supports 50 are arranged in an annular shape at equal intervals, and the inner ends are fixed to the circular end coupling member 51, and the outer ends are plural at the inner end of the air inlet 11 formed on one side of the housing 10. It is configured by being radially coupled to and supported by the fixing part 13 provided at the location, thereby improving the energy consumption efficiency by obtaining the maximum output of the motor with the same power, increasing the blowing volume, and the maximum blowing amount compared to the maximum output of the motor. It has the effect of minimizing the generation of vibration noise by reducing the vibration at both ends of the blower.

Description

Blowers with BMC motor that increase ventilation volume and minimize vibration noise}

The present invention relates to a blower used for blowing, and more particularly, a blower

Extend the length of the blower fan constituting the unit, and expand the housing in which the blower fan is housed.

Compared to the motor of the same output, the BMC motor is used to ensure stable rotation while maximizing the amount of air blown compared to the motor of the same output, and the motor is supported to be stable and noise-reduced to reduce vibrations generated during operation, and to improve efficiency and durability. It relates to a blower using a BMC motor that has an improved structure, increases airflow and minimizes vibration noise.

In general, a sirocco fan is a fan that sucks air in a direction of a rotation axis and blows air in a direction perpendicular to the rotation axis, and is widely used in blowers of various air conditioning equipment.

Such a blower rotates a cylindrical blower fan in which a number of cylindrical blades are formed to intake and discharge air.These cylindrical blower fans are more efficient in intake and discharge air than a propeller-type blower. It has been applied and widely used.

The cylindrical blower fan is configured such that the motor shaft is supported at the inner center of the blower fan in order to minimize vibration and noise due to vibration due to high speed rotation.

In addition, when the blower fan rotates in accordance with the maximum output of the motor, it can stably rotate against the air resistance applied to the blower fan, reduce vibration and vibration noise, and cause excessive stress concentration in the support part supporting the motor shaft. In order to prevent damage, the blower fan is implemented with a length of about 1/2 of the length of both ends of the blower fan compared to the diameter.

An example of such a blower is an evaporation fan in which an evaporation fan is connected in duplicate to improve cooling efficiency by circulating air uniformly and smoothly in Public Utility Model Publication No. 2000-0018674 (published on October 25, 2000). Has been.

However, in order to avoid the risk of damage due to stable rotation of the conventional blower fan, vibration, vibration noise, and stress concentration, the length of the blower fan is limited, so that the blower fan cannot be operated using the maximum output of the motor. , There is a problem in that noise due to vibration in the blower support part is largely generated during high-speed rotation.

Registered Patent No. 10-0481797 Unexamined Patent Publication No. 10-2014-0006074

An object of the present invention is to provide a blower having an improvement in blowing power by maximizing the output of the motor with a blower fan using a motor molded with a BMC (Bulk Molding Compound) resin in order to solve the problems of the prior art, It is to provide a blower that reduces the occurrence of vibration of the blower fan that rotates when blowing by operating the motor at its maximum output, minimizes the occurrence of vibration noise, and prevents damage to the blower due to strong output.

In order to achieve the above object, the blower using a BMC motor that increases the amount of air blown according to the present invention and minimizes vibration noise is provided at a distance from both sides, and an air inlet is formed on one side, and an air outlet for discharging the introduced air is provided on the other side. A blower comprising a pair of housings formed, blower fans rotatably embedded in each of the housings, and a motor provided between the pair of housings to rotate the blower fans,

The motor is formed of a motor molded with BMC (Bulk Molding Compound) resin,

The blower fan is formed to have a length extending in the motor shaft direction so as to have a blowing force suitable for the maximum output of the motor, and a shaft coupling part for coupling with the motor shaft is formed in the center of the length direction,

The free end of the shaft portion of the motor is rotatably supported by a plurality of motor shaft supports, the motor shaft supports are arranged in an annular shape at equal intervals, the inner ends are fixed to the circular end coupling members, and the outer end is a housing It is configured in that the inner end portion of the air inlet formed on one side is radially coupled to and supported by a fixing portion provided at a plurality of places.

It is preferable that the housing and the blower fan constituting both blowers are formed to have a length of 16 to 2 or less compared to the diameter.

It is preferable that a buffer rolling part is provided inside the housing to prevent sagging of the blower fan formed at high speed and concentration of stress at the shaft coupling part during high speed rotation.

The shaft coupling portion is formed in the center by being connected to ribs extending radially inward from the center inner surface of the blower fan, and the shaft portion of the motor is penetrated and coupled.

The cushioning rolling part has a pair of support parts that are spaced apart to form grooves and protrude inwardly at equal intervals on the inner side adjacent to the air inlet of the housing, and the end of the blange part formed to extend radially outward from the outer end of the blower fan The shaft is rotatably mounted on the inner walls of both sides of the support unit to support the in contact state, and includes a bearing roller protruding to both sides.

Alternatively, the cushioning rolling unit supports a pair of support portions formed by protruding inward and spaced apart so that insertion holes are formed at equal intervals on the inner side adjacent to the air inlet of the housing, and a flange portion formed at the outer end of the blower fan in contact with each other. A bearing roller, a support provided to support the bearing roller and slidably provided in the insertion hole, a spring elastically supported at the rear of the shaft support, and a cover sealing the outer opening of the insertion hole and fixing both ends with screws. Can be.

The pair of housings in which the blower fan is embedded and the motor are coupled by a motor accommodating portion, and the motor accommodating portion is formed in a cylindrical shape, and is coupled to the side end of the housing in a fastening hole formed on a surface partially bent from both sides to the inside. , It is preferable that the air inlets are formed through the outer surface at a plurality of equal intervals, and the motor seating portion is formed in the interior to mount the motor.

A blower using a BMC motor that increases the amount of air blown according to the present invention and minimizes vibration noise, connects the blower to both sides around one motor, and the housing and blower fan constituting both blowers are within 16 to 2 times the diameter. It is formed to have a length of to obtain the maximum output of the motor with the same power, thereby improving energy consumption efficiency and increasing the amount of air blown.

In addition, the housing and blower fan constituting the blower on both sides have a long housing and a blower fan in the axial length direction, and a buffer roll that supports the outer peripheries of both ends of the blower fan without interfering with the flow of air flow inside the housing. By configuring the part, while having the maximum airflow compared to the maximum output of the motor, there is an effect of minimizing the occurrence of vibration noise by reducing the vibration at both ends of the blower.

In addition, both blowers and motors are combined through a coupling member with an air inlet so that it is easy to assemble, and productivity is improved with ease of assembly, and the coupling member is partitioned through the motor seating portion formed inside the air inlet. There is an effect that the air inflow into the furnace is clearly separated and flows in smoothly.

A motor receiving unit 70 having a motor seating unit 72 formed therein to mount the motor 40 is provided, so that the blower can be easily assembled, and the outer surface of the accommodating unit has a plurality of air inlets ( 71) are formed through and there is an effect that a cooling action can be performed by the incoming air.

1 is a schematic perspective view of a blower according to an embodiment of the present invention
Figure 2 is a front view of the blower of Figure 1;
3 is a schematic cross-sectional view showing a configuration of a motor shaft support and a buffer rolling unit supporting the motor shaft of the blower of 1;
4 is a partially enlarged view showing a modified example of the buffer rolling unit of FIG. 3
FIG. 5 is a partially enlarged view showing a cooling action by air flowing into the blower units at both sides through long holes formed in the motor housing provided at the center of the blower of FIG. 2;

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments according to the present invention.

In Figures 1 to 3, the blower according to the present invention is provided with a pair of housings 10 spaced apart on both sides, blower fans 20 rotatably built in each of the housings 10, and the pair of It is provided between the housings 10 and includes a motor 40 for rotating the blower fans 20. It is preferable that the motor 40 is a motor molded with a BMC (Bulk Molding Compound) resin.

The housing 10 is formed with an air inlet 11 opened to allow air to be introduced from one side, that is, from the outside, and the other side is opened to allow the shaft of the motor to be introduced and is coupled to the motor receiving portion 70. The housing 10 is formed long in the direction of the motor shaft to have a blowing force according to the maximum output of the motor 40, and the diameter of the blower fan 20 is greater than the diameter of the blower fan 20 so that air is introduced to both sides according to the rotation of the blower fan 20. An air inlet 11 having a wide diameter is formed, and an air outlet 12 for discharging air introduced to one side is formed.

The motor 40 is formed by extending shaft portions 41 to both sides, respectively, and a blower fan 20 is mounted on each of the shaft portions 41 extending to both sides to be driven together by one motor.

The blower fan 20 has a cylindrical shape and a plurality of blowing blades 21 are formed, and the blower fan 20 is formed to have a length extending in the motor shaft direction so as to have a blowing force suitable for the maximum output of the motor 40, and A shaft coupling part 22 for coupling with the motor shaft is formed in the center. The shaft coupling part 22 is formed in the center by being connected to the ribs extending radially inward from the center inner surface of the blower fan 20, and the shaft part 41 of the motor is penetrated and coupled to the blower fan by the motor. The fan rotates.

The free end of the shaft portion 41 of the motor 40 is rotatably supported by a plurality of motor shaft supports 50, and the motor shaft supports 50 are annularly formed at equal intervals in the illustrated embodiment. And the inner ends are fixed to the circular end coupling member 51, and the outer end is provided at a plurality of places on the inner end of the air inlet 11 formed on one side of the housing 10. In the illustrated embodiment, in four places It is supported by being radially coupled to the fixing part 13.

The housing 10 and the blower fan 20 may have an axial length of 16 to 2 times less than the diameter of the blower fan 20. A buffer rolling part 60 is provided inside the housing 10 so as to prevent sagging of the blower fan 20 formed at high speed during high-speed rotation and to prevent stress concentration on the shaft coupling part 22 due to high-speed rotation.

The buffer rolling part 60 includes a pair of support parts 61 that are spaced apart to form grooves at equal intervals on the inside adjacent to the air inlet 11 of the housing 10 and protrude inward, and the rotating blower fan ( A bearing in which a shaft having both ends rotatably mounted on both inner walls of the support part 61 protrudes to both sides to support the end of the blange part 25 formed by extending radially outward from the outer end of 20) in a contacted state. Includes a roller 62.

Accordingly, when the blower fan 20 rotates at high speed, it is elastically supported by the bearing roller 62 at the flange portion 25 formed at the outer end of the blower fan, so that it has a buffer effect against rotational vibration. The blower fan 20 and the shaft coupling part 22 are prevented from being damaged and noise is reduced.

4 shows a modified example of the buffer rolling part 60, and in the buffer rolling part 60 ′ of the modified example, a pair of support parts 61 protrude inward, but therebetween, a groove shape as in the above-described embodiment Not the insertion hole 63 is formed.

The buffer rolling part 60 ′ of the modified example includes a pair of support parts 61 that are spaced apart so that insertion holes 63 are formed at equal intervals on the inner side adjacent to the air inlet 11 of the housing 10 and protrude inward. , A bearing roller 62 that supports the flange portion 25 formed at the outer end of the blower fan in a contacted state, and a shaft support 64 that supports the bearing roller 62 and is slidably provided in the insertion hole 63 ), a spring 65 that elastically supports from the rear of the shaft support 64 and a cover 66 that seals the outer opening of the insertion hole 63 and has both ends fixed with screws.

In the implementation of the present invention, the housing 10 and the motor 40 may be coupled by a motor receiving portion 70 as shown in FIG. 5.

The motor accommodating portion 70 is formed in a cylindrical shape, is screwed with the side end of the housing 10 in a fastening hole formed on a surface that is partially bent from both sides to the inside, and an air inlet ( 71) are formed through, so that when the blower fan is driven by the motor, external air can be introduced not only through the air inlet 11 on the outside of the housing but also through the air inlet 71 from the inside. The motor seating portion 72 is formed and configured to mount the motor 40.

The blower according to the present invention includes a housing 10 formed on both sides with a motor as the center, a blower fan 20 configured inside the housing 10, and a motor configured to be inserted into the blower fan 20 ( 40), and when power is applied to the motor 40 and operated, the maximum airflow amount is obtained by the elongated housing 10 and the blower fan 20 formed to have a ventilation scheme according to the maximum output of the motor 40. .

On the other hand, the blower fan 20 is coupled with the motor shaft on one side and the motor shaft support 50 on the other side is coupled to the motor shaft to support the blower fan 20 to minimize vibration even when the blower fan rotates at high speed. Can be rotated.

In addition, in accordance with the present invention, a buffer rolling part 60 is formed on the outer inner wall surface of the housing 10, and the bearing roller 62 supports the outer end of the blower fan 20. As well as preventing sagging, vibration caused by high-speed rotation is minimized so that stress concentration on the shaft coupling portion 22 does not occur, thereby preventing damage to the shaft coupling portion 22.

In addition, in the modified example, by configuring the bearing roller 62 constituting the buffer rolling part 60' to be elastically supported by the spring 65, the spring buffers the vibration caused by high-speed rotation, and the blower fan It is possible to relieve the stress generated in (20).

In addition, by configuring the pair of housings 10 to be coupled to the motor accommodating portion 70 from both sides, it is possible to easily couple the two blower fans and the motor, thereby improving productivity.

In addition, the motor accommodating portion 70 smoothly flows air through the air inlet 71, and the introduced air cools the motor 40 to prevent overheating of the motor, and the motor seat 72 As the internal space is clearly partitioned through the air, it is introduced into different passages, and the resistance due to the interference of the generated eddy current is minimized, so that the air flowing into both blowers is clearly separated and introduced.

The present invention can be used in a blower equipped with a blowing fan.

10: housing 11: air inlet
12: air outlet 13: fastening part
20: blower fan 21: blower blade
22: shaft coupling portion 40: motor
50: motor shaft support 60: buffer roller
61: support 62: bearing roller
63: insertion hole 64: shaft support
65: spring 66: cover
70: coupling member 71: air inlet
72: motor seat

Claims (7)

A pair of housings 10 provided spaced apart on both sides and formed with an air inlet 11 on one side and an air vent 12 for discharging the introduced air, and rotatably built in each of the housings 10 In the blower provided between the blower fans 20 and the pair of housings 10 and having a motor 40 molded with a resin to rotate the blower fans 20,
The blower fan 20 is formed to have a length extending in the motor shaft direction so as to have a blowing force suitable for the maximum output of the motor 40, and a shaft coupling part 22 for coupling with the motor shaft in the center of the length direction. ) Is formed,
The free end of the shaft part 41 of the motor 40 is rotatably supported by a plurality of motor shaft supports 50, and the motor shaft supports 50 are arranged in an annular shape at equal intervals, and the inner ends are circular. It is fixed to the end coupling member 51 of the, the outer end is radially coupled to and supported by the fixing part 13 provided at a plurality of places on the inner end of the air inlet 11 formed on one side of the housing 10,
The inner side of the housing 10 is characterized in that a buffer rolling part (60,60') is provided to prevent sagging of the blower fan 20 formed at high speed and concentration of stress in the shaft coupling part 22 at high speed rotation. Blower using a BMC motor that increases the amount of air blown and minimizes vibration noise.
The method of claim 1,
A blower using a BMC motor that increases the amount of air blown and minimizes vibration noise, characterized in that the housing and the blower fan constituting both blowers are formed to have a length of 16 to 2 times compared to the diameter.
delete The method of claim 1,
The shaft coupling portion 22 is formed in the center by being connected with ribs extending radially inward from the central inner surface of the blower fan 20, and the shaft portion 41 of the motor is penetrated and coupled. Blower using BMC motor that increases airflow and minimizes vibration noise.
The method of claim 1,
The buffer rolling part 60 has a pair of support parts 61 formed by protruding inwardly at equal intervals on the inner side adjacent to the air inlet 11 of the housing 10 to form grooves, and the blower fan 20 A bearing roller having a shaft rotatably mounted on both inner walls of both sides of the support part 61 so as to support the end of the blange part 25 formed by extending radially outward from the outer end of) to protrude to both sides A blower using a BMC motor that increases the amount of air blown and minimizes vibration noise, comprising 62.
The method of claim 1,
The cushioning rolling part 60 ′ includes a pair of support parts 61 protruding inwardly spaced apart so that insertion holes 63 are formed at equal intervals on the inner side adjacent to the air inlet 11 of the housing 10, and a blower A bearing roller 62 supporting the flange portion 25 formed at the outer end of the fan in a contacted state, a shaft support 64 supporting the bearing roller 62 and slidably provided in the insertion hole 63, A spring 65 that elastically supports from the rear of the shaft support 64 and a cover 66 that seals the outer opening of the insertion hole 63 and has both ends fixed with screws to increase the amount of air blown. Blower using BMC motor that minimizes vibration and noise.
The method according to any one of claims 1, 2, and 4 to 6,
The pair of housings 10 in which the blower fan 20 is embedded and the motor 40 are coupled by a motor accommodating portion 70, and the motor accommodating portion 70 is formed in a cylindrical shape, and is constant from both sides to the inside. It is coupled with the side end of the housing 10 in the fastening hole formed on the partially bent surface, and the air inlet 71 is formed through the outer surface at a plurality of equal intervals, and the motor seating part to mount the motor 40 therein. A blower using a BMC motor that increases airflow and minimizes vibration noise, characterized in that 72 is formed.

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