CN201705733U - Heat dissipation structure of a blower - Google Patents

Abstract

The utility model discloses a heat radiation structure of air-blower, including motor, support, fan blade, air-blower shell and wind wheel, the motor passes through the support mounting on the air-blower shell, and the end that stretches out of motor shaft stretches into the cavity of air-blower shell the inside and get up with wind wheel erection joint, installs the fan blade between motor and air-blower shell, in the pivot, offers the gas pocket on the casing of motor, wherein: holes are arranged below the fan blades and on the blower shell, negative pressure is formed in the motor by utilizing the rotation of the fan blades and the wind wheel, and cold air passes through the air holes, the motor winding and the holes under the action of the negative pressure to bring the heat of the motor winding to the cavity of the blower to be discharged. The air flow is fast and the flow is large, and the heat dissipation effect is very good.

Description

Heat dissipation structure of a blower

Technical field:

The utility model relates to a heat dissipation structure of an air blower.

Background technique:

Present blower, its structure as shown in Figure 1, Figure 2, motor 1, support 2, top fan blade 3, blower casing 4, wind wheel 5 and bottom blade 7, motor 1 is installed on the blower casing 4 by bracket 2 , the extended end of the rotating shaft 6 of the motor 1 stretches into the cavity inside the blower housing 4 and is installed and connected with the wind wheel 5. Between the motor 1 and the blower housing 4, the bottom fan blade 7 is installed on the rotating shaft 6, and the top wind blade is installed. Leaf 3 is installed on the other end of rotating shaft 6, offers air hole 8 on the housing of motor, and cooling hole 9 is also set around support 2, but the cavity of blower housing 4 the inside is not communicated with motor.

The whole heat dissipation process is: the top fan blade sends cold air to the motor winding and bearing, and then the hot air is discharged into the air by the cooling holes around the support 2 through the bottom fan blade 7 . Air holes are arranged at the front and rear ends and side walls of the housing of the motor. This heat dissipation structure is relatively complicated, the manufacturing cost is high, and the heat dissipation effect is poor, so it cannot effectively remove the heat of the motor in a timely and rapid manner.

Invention content:

The purpose of the utility model is to provide a heat dissipation structure of a blower with simple structure and fast heat dissipation effect.

The purpose of this utility model is achieved through the following technical solutions.

A heat dissipation structure of a blower, including a motor, a bracket, fan blades, a blower casing and a wind wheel, the motor is mounted on the blower casing through the bracket, and the protruding end of the motor shaft extends into the cavity inside the blower casing and is installed and connected with the wind wheel Install fan blades on the rotating shaft between the motor and the blower casing, and open air holes on the motor casing, wherein: there are holes under the fan blades and on the blower casing, and use the rotation of the fan blades and the wind wheel to make the inside of the motor form. Negative pressure, cold air passes through the air holes, motor windings and holes under negative pressure to bring the heat of the motor windings to the cavity of the blower and discharge it.

The surroundings of the above-mentioned support are sealed, and the middle is hollow, and the fan blades are placed inside the support.

Air holes are provided on both end surfaces of the casing of the above-mentioned motor.

The above-mentioned heat dissipation air holes on the motor housing are arranged on the side wall away from the end of the fan.

A thermal insulation pad is installed between the above-mentioned bracket and the blower casing.

The above-mentioned motor is installed on the bracket through rivets, and the bracket is installed on the blower casing through bolts and nuts.

The above-mentioned fan blades are axial flow fan blades.

Compared with the prior art, the utility model has the following effects: because the blower housing has holes, the cavity of the blower communicates with the motor, the cold air enters the motor from the air hole on the motor housing, and the motor is driven by the fan blades. The internal air is discharged into the cavity of the blower, and then the strong exhausting capacity generated by the wind wheel of the blower in the shell, that is, the negative pressure generated in the cavity of the blower, is used to discharge the hot air, and the air flows quickly And the flow rate is large, and the heat dissipation effect is very good.

Description of drawings:

Fig. 1 is the explosion schematic diagram of existing blower;

Fig. 2 is the sectional view of existing blower;

Fig. 3 is a structural representation of the utility model;

Fig. 4 is the explosion schematic diagram of the utility model;

Fig. 5 is the appearance schematic diagram of the utility model;

FIG. 6 is a sectional view of FIG. 5 .

Detailed ways:

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

As shown in Figures 3 to 6, a heat dissipation structure of a blower includes a motor 1, a bracket 2, fan blades 3, a blower casing 4 and a wind wheel 5, the motor 1 is installed on the blower casing 4 through the bracket 2, and the motor shaft 6 The protruding end stretches into the cavity 7 inside the blower housing 4 and is installed and connected with the wind wheel 5. Between the motor 1 and the blower housing 4, the fan blade 3 is installed on the rotating shaft 6. On the housing of the motor 1, there are The air hole 8, wherein: there is a hole 9 under the fan blade 3 and on the blower shell 4, and the rotation of the fan blade 3 and the wind wheel 5 makes the inside of the motor 1 form a negative pressure, and the cold air passes through the air hole 8 and the motor winding under the negative pressure. And the holes 9 bring the heat of the motor winding to the cavity 7 of the blower to be discharged.

The surroundings of the above-mentioned support 2 are sealed, and the middle is hollow, and the fan blades 3 are placed inside the support 2 .

Air holes 8 are provided on both ends of the casing of the above-mentioned motor 1 .

The heat dissipation air hole 10 on the above-mentioned motor housing is provided on the side wall away from the end of the fan.

A heat insulating pad 11 is installed between the above-mentioned bracket 2 and the blower casing 4 .

The motor 1 mentioned above is installed on the bracket 2 through rivets, and the bracket 2 is installed on the blower casing 4 through bolts and nuts.

The above-mentioned blades 3 are axial flow blades.

The working principle of the utility model is: because the blower shell 4 has a hole 9, the cavity 7 of the blower is communicated with the motor 1, and the cold air enters the inside of the motor 1 from the cooling air hole 10 on the top surface of the motor 1 housing, and a part of the The air is discharged from the air hole 8 on the end face of the motor 1 shell, taking away part of the heat; the other part of the air uses the fan blade 3 to discharge the hot air inside the motor 1 into the cavity 7 of the blower, and then uses the wind wheel 5 to blow the air in the blower shell 4 The powerful suction and exhaust capacity generated inside, that is, the negative pressure generated in the air blower cavity 7, discharges the hot air. The air flow is fast and the flow rate is large, and the heat dissipation effect is very good.

Claims (7)

1. A heat dissipation structure of a blower, including a motor, a bracket, fan blades, a blower casing and a wind wheel, the motor is mounted on the blower casing through a bracket, and the protruding end of the motor shaft extends into the cavity inside the blower casing and connects with the wind wheel Installed and connected, fan blades are installed between the motor and the blower casing and on the rotating shaft, and an air hole is provided on the motor casing, and it is characterized in that holes are arranged under the fan blades and on the blower casing. 2. The heat dissipation structure of a blower according to claim 1, characterized in that: the periphery of the bracket is sealed, the middle is hollow, and the fan blades are placed inside the bracket. 3. The heat dissipation structure of a blower according to claim 1 or 2, characterized in that air holes are provided on both ends of the housing of the motor. 4. The heat dissipation structure of a blower according to claim 1 or 2, characterized in that: the heat dissipation air holes on the motor housing are arranged on the side wall away from the end of the fan. 5. The heat dissipation structure of a blower according to claim 1 or 2, characterized in that a heat insulating pad is installed between the bracket and the blower casing. 6. The heat dissipation structure of a blower according to claim 1 or 2, wherein the motor is mounted on the bracket through rivets, and the bracket is mounted on the blower casing through bolts and nuts. 7. The heat dissipation structure of a blower according to claim 1 or 2, wherein the fan blades are axial flow fan blades. the

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