CN220726623U - Built-in axial fan radiating air-blower - Google Patents

Abstract

The utility model belongs to the field of blowers, discloses an air suspension blower with a built-in axial flow fan for radiating, and solves the problems of damage to products, high power consumption and high cost caused by high heat generated by high-speed rotation of a motor in the blower. The blower with the built-in axial flow fan for radiating comprises an impeller, a volute, a high-speed permanent magnet motor and an axial flow fan assembly, wherein the impeller is fixedly arranged on a motor rotor shaft supported by an air suspension bearing, and the axial flow fan brings internal hot air to the outside. The blower with the built-in axial flow fan for radiating is not only suitable for an air suspension blower, but also suitable for a common blower, and is also suitable for other devices needing to radiate heat from inside to outside.

Description

Built-in axial fan radiating air-blower

Technical Field

The utility model belongs to the technical field of blowers, and particularly relates to an air suspension blower with an internal axial flow fan for radiating.

Background

The common blower comprises core components such as a motor, an impeller, a volute, and the like, wherein the common motor comprises parts such as a motor stator, a motor rotor shaft, magnetic steel, a sheath, and the like. The heating of the motor mainly originates from the stator and the rotor of the motor. The actual operation of the motor can show that the temperature is an important factor affecting the performance and the service life of the motor, especially the high-frequency, high-power and high-rotation-speed permanent magnet motor, and the reasonable heat dissipation of the motor is particularly important.

Conventional high-speed permanent magnet motors generally adopt air cooling and water cooling to cool. The water cooling structure is relatively complex, often has leakage risk, and the cost is relatively high. The common air-cooled heat dissipation structure generally comprises: 1. the motor housing is used for blowing and radiating from the outside of the motor housing, and is usually used for a low-power motor, but the larger the motor power is, the poorer the radiating effect is often due to the problem of internal and external thermal resistance; 2. the coaxial centrifugal impeller type fan is arranged in the motor to dissipate heat, and the heat dissipation structure has good effect, but has larger noise, complex manufacturing process and relatively higher cost (requiring 5-axis machine tool processing). When the blower is in complete machine operation, the power consumption of the cooling fan is larger and basically reaches more than five percent (for example, a 100KW host machine, and the cooling power energy consumption reaches 5 KW); 3. other suction or blowing heat dissipation structures.

The air suspension blower is outstanding as the blower field, if we do better to the heat dissipation of the inside of motor and core components such as impeller, just can realize more better application scenario.

Disclosure of Invention

The utility model aims to solve the problems of short service life, leakage risk, high heat dissipation energy consumption, high heat dissipation end noise, high manufacturing cost and the like aiming at the problems of poor heat dissipation effect, high temperature, short service life and the like of the whole blower and a motor thereof.

The utility model discloses a blower with built-in axial flow fan for radiating, which comprises a motor, an impeller and an axial flow fan radiating part formed by an axial flow fan and a flow guide seat thereof, wherein the impeller and the axial flow fan radiating part are respectively and fixedly arranged at two ends of a rotor shaft of the motor; the outer part of the impeller is provided with a volute, and when the impeller rotates along with a motor rotor shaft, air inlet and air outlet of the blower are formed through the volute; the motor is characterized in that a motor shell with aluminum fins uniformly distributed on the outer surface is arranged outside a stator of the motor, so that a better ventilation effect is achieved.

Further optimizing, namely, a heat dissipation air guide sleeve of the motor shell is also arranged outside the aluminum fin motor shell; a heat radiation air inlet pipe matched with the axial flow fan is arranged outside the guide seat of the axial flow fan, and a heat radiation air outlet pipe used when hot air in the blower passes through the heat radiation guide cover and is finally discharged is also arranged; the air flow is sucked into the blower from the heat radiation air inlet pipe by the axial flow fan, enters all the holes in the blower, carries the heat generated in the blower, and is discharged from the heat radiation air outlet pipe.

The motor preferably uses a self-made high-speed permanent magnet motor, and the heating source of the motor mainly comes from a motor stator and a motor rotor shaft; further optimization is that the outer surface of the motor stator is provided with a ventilation groove, so that the heat dissipation effect is enhanced.

Further optimizing, on the cylinder terminal surface that the motor housing is close to spiral case one end, offered radial equipartition's heat dissipation air vent, let inside air current get into aluminium fin inslot or other holes sooner.

Further preferably, the blower is an air suspension blower, that is, the motor rotor shaft is suspended and supported by the air bearing assembly when rotating, and the motor rotor shaft is in a suspended state in the air when rotating.

Preferably, the air bearing assemblies are arranged on a rotor shaft outside a stator of the motor, and the air bearing assemblies are arranged on shafts outside two ends of the stator respectively and are positioned inside the impeller and the axial flow fan on the shafts.

The axial flow fan has ingenious design, simple manufacture, low cost, lower energy consumption and low noise when running compared with the common centrifugal fan; the power consumption of the axial flow fan is basically controlled within 2% of the total power, and the conventional heat dissipation power consumption usually accounts for 5% of the total power. The utility model realizes a novel heat dissipation structure in the main machine which brings cold air from outside to inside and from inside to outside, not only has good heat dissipation effect in the main machine, but also ensures that the heat dissipation effect of the whole machine is comprehensively improved by optimizing the whole design, and the product has higher safety; the product lifetime is increased.

Drawings

The illustrations used in the present utility model are as follows:

FIG. 1 is a schematic diagram of the internal structure of an air suspension blower with heat dissipation by an axial flow fan

Fig. 2 motor housing with fins and vent holes

Fig. 3 shows the structure of the axial fan 10

Fig. 4 motor stator 6 with ventilation slots

Fig. 5 is a perspective view of the host with the heat dissipation pod 8 removed

Figure 6 is an exterior perspective view of the blower

Reference numerals in the drawings: 1 impeller 2 spiral case 3 thrust bearing mount pad 4 radial mount pad 5 rotor shaft 6 motor stator 7 motor housing 8 motor housing's heat dissipation kuppe 9 heat dissipation outlet duct 10 axial fan 11 axial fan guide pad 12 heat dissipation intake pipe 13 motor support 14 air bearing assembly

Examples

The technical solution of the present utility model will be described in detail by taking a specific implementation product as an example.

The air suspension blower with built-in axial flow fan for heat dissipation is shown in fig. 6, the internal structure is shown in fig. 1, the air suspension blower comprises a motor, an impeller supported by an air suspension bearing and an axial flow fan heat dissipation part, wherein the impeller and the axial flow fan heat dissipation part are respectively and fixedly arranged at two ends of a rotor shaft 5 of the motor; the impeller 1 is externally provided with a volute 2, and when the impeller 1 rotates along with a motor rotor shaft 5, air inlet and air outlet are formed by the volute 2;

in this embodiment, as shown in fig. 1, a motor housing 7 is provided outside the stator of the motor; as shown in fig. 2, the motor housing 7 is designed as an aluminum fin type to facilitate heat dissipation; on the cylindrical surface of the motor shell 7 near one end of the volute, uniformly distributed heat dissipation vent holes are formed.

The axial flow fan radiating component comprises an axial flow fan 10 (shown in figure 3) and an axial flow fan guide seat 11 which are coaxially arranged; when the motor rotor shaft rotates, the axial flow fan 10 and the axial flow fan flow guide seat 11 thereof suck external wind into the motor, and push the external wind forwards along the arrow in the gap shown in fig. 1 in the axial direction of the motor rotor, and the air flow directly moves to the volute of the motor rotor shaft 5 and then is discharged to the outside along the gap of the motor and/or the ventilation holes on parts.

As shown in fig. 6 and 1, a heat dissipation air guide sleeve 8 (shown in fig. 1) is further arranged outside the motor housing 7 in the embodiment; on the heat dissipation air guide sleeve 8, a heat dissipation air outlet pipe 9 is configured for the last step of the air flow process; a heat radiation air inlet pipe 12 matched with the axial flow fan 10 is arranged outside the guide seat of the axial flow fan.

As shown in fig. 1, the axial flow fan 10 sucks external cold air into the motor according to the direction of the heat dissipation and air intake arrow, and takes away the surface heat of the two main heat generating sources through the motor rotor shaft 5 and the motor stator 6 at a faster air flow rate, then the air flow (practice verifies that the air temperature is lower than the surface temperature of the motor shell 7) after passing through the two heat generating sources passes through the fin gaps outside the motor shell 7 (shown in fig. 2) according to the direction of the arrow, and finally is discharged out of the host machine from the heat dissipation air outlet pipe 9, and the whole direction of the arrow in fig. 1 is the heat dissipation principle of the utility model.

In this embodiment, as shown in fig. 1, the bearing for supporting the motor rotor shaft is an air bearing assembly 14, the air bearing assembly 14 includes a thrust bearing mounting seat 3 and a radial mounting seat 4, and two air bearing assemblies 14 are respectively disposed at two ends of the motor rotor shaft 5 outside the motor stator, as shown in fig. 1; the air bearing assembly 14 includes a thrust bearing mount and a radial mount;

in this embodiment, the motor is a high-speed permanent magnet motor, the heating source of the motor is mainly derived from the motor stator 6 and the motor rotor shaft 5 of the motor rotor, and from the practical situation of motor operation, the temperature affects the performance and service life of the motor, especially the high-frequency, high-power and high-rotation-speed permanent magnet motor, so that the reasonable heat dissipation of the motor is very important; the motor stator 6 in this embodiment has ventilation grooves for heat dissipation on the outer surface thereof as shown in fig. 4.

The repeated actual measurement shows that the temperature of the air coming out of the two heating sources inside the motor stator 6 and the motor rotor shaft 5 is lower than the temperature of the aluminum fins of the motor shell, and the air coming out of the motor rotor shaft takes away the heat of the two heating sources inside the motor, so that the structure shown in fig. 5 and 6, such as the flow direction of the air shown in fig. 1, obviously can be given to the fins of the motor shell again for secondary cooling, and finally discharged out of the host machine, and the effect of the actual product is also the same.

The axial flow fan 10 has the advantages that the design is ingenious, the manufacturing is simple, the cost is low, and the energy consumption and the noise are lower than those of the common centrifugal fan during the operation; the power consumption of the axial flow fan is basically controlled within 2% of the total power, and the conventional heat dissipation power consumption often accounts for 5% of the total power consumption.

The air suspension blower radiating by the axial flow fan is a novel blower radiating structure which takes a radiating fan coaxial with a rotor shaft as a power source and realizes internal blowing. The heat dissipation structure disclosed by the utility model has the advantages that the heat dissipation effect of the finished product is good, the service life of the product is prolonged, and the heat dissipation structure is suitable for products such as an air suspension blower, other common blowers and the like which need heat reduction in the interior.

Claims (7)

1. The blower with built-in axial flow fan for heat radiation comprises a core component motor and an impeller, and is characterized by also comprising an axial flow fan heat radiation component comprising an axial flow fan and an axial flow fan flow guide seat, wherein the impeller and the axial flow fan heat radiation component are respectively and fixedly arranged at two ends of a rotor shaft of the motor; a volute is arranged outside the impeller, and when the impeller rotates along with a motor rotor shaft, air inlet and air outlet of the blower are formed through the volute; a motor shell with uniformly distributed aluminum fins on the outer surface is arranged outside a stator of the motor.

2. The blower for heat dissipation of built-in axial flow fan according to claim 1, wherein the motor housing is further provided with a plurality of radially uniformly distributed ventilation holes on a cylindrical surface near one end of the volute.

3. The blower with built-in axial flow fan radiating according to claim 1, wherein a motor housing radiating guide cover is also installed outside the aluminum fin motor housing; the heat dissipation air guide sleeve is also provided with a heat dissipation air outlet pipe used when hot air in the main engine is discharged after passing through the heat dissipation air guide sleeve; and a heat dissipation air inlet pipe is arranged on the flow guide seat of the axial flow fan for the axial flow fan.

4. The blower for heat dissipation of a built-in axial flow fan according to claim 1, wherein said motor is a self-made high speed permanent magnet motor and an outer surface of said motor stator is provided with ventilation slots.

5. The blower for dissipating heat from a built-in axial flow fan of claim 1, wherein said blower is an air-levitation blower, i.e., said motor rotor shaft rotates in a contactless air-levitation rotational motion supported by an air bearing assembly.

6. A blower for dissipating heat from a built-in axial flow fan as set forth in any one of the preceding claims, wherein said blower is an air-suspension blower; the motor is a self-made high-speed permanent magnet motor, and a ventilation groove is formed in the outer surface of a motor stator; the shell of the motor with aluminum fins is provided with vent holes which are uniformly distributed in the radial direction on the cylindrical surface close to the volute end; a heat dissipation air guide sleeve is arranged outside the aluminum fin motor shell; the heat dissipation air guide cover is also provided with a heat dissipation air outlet pipe used for discharging hot air in the blower after passing through the air guide cover; the axial flow fan guide seat is provided with a heat dissipation air inlet pipe for the axial flow fan.

7. The blower for dissipating heat from a built-in axial flow fan of claim 5, wherein said air bearing assemblies are mounted on a rotor shaft adjacent to the exterior of the motor stator, one air bearing assembly being mounted at each end of the exterior of the motor stator and being positioned on the shaft inside the impeller and axial flow fan.