CN104660008B - A kind of injection type air cooling permanent-magnet speed governor - Google Patents

Abstract

An injection-type air-cooled permanent magnet governor, which consists of an injection cover (1), a driver and connecting shafts on both sides of the driver that are respectively connected to the motor and the load, wherein the outer circumference of the driver is provided with multiple pieces at intervals Fan blades (2) have air inlet holes on the outer circumference of the corresponding connecting shaft on both sides of the ejection cover, and air outlets on the top. Two pairs of guide disks (10) and disks are arranged on the drive along the axial direction. There is an air pressure port (9) on the guide disk or disk of the hole, and an air pressure plate (8) matching with the air pressure port is arranged on the outside of the inlet of the pressure air outlet. The inner disk or guide disk has an air guide port. The outer side of the outlet of the air outlet is provided with a first air guide plate matched with the air guide opening. The invention utilizes the airflow generated during rotation to guide it back for its heat dissipation, which increases the ventilation volume of the air cooling and greatly improves the heat dissipation efficiency.

Description

An ejector-type air-cooled permanent magnet governor

technical field

The invention relates to a device for transmitting torque, specifically an ejector-type air-cooled permanent magnet governor, which is used for the connection between a motor and a load (pump, fan, etc.) and replaces a shaft coupling for torque transmission.

Background technique

At present, in the actual application of the permanent magnet variable speed drive, the heat generation and heat dissipation problems of the permanent magnet variable speed drive have been bothering the manufacturers and users. The permanent magnet speed control actuator generates heat due to the eddy current of the magnetic field and the magnetic force line cutting by the magnetic field. If the heat existing in the permanent magnet speed control equipment is not handled properly, it will directly affect the effectiveness and life of the equipment.

Contents of the invention

The purpose of the present invention is to provide an ejector type air-cooled permanent magnet governor with simple structure and better heat dissipation effect.

The invention provides an injection type air-cooled permanent magnet governor, which is composed of an injection cover, a driver and connecting shafts on both sides of the driver that are respectively connected to the motor and the load. There are two blades, air inlet holes are formed on both sides of the ejection cover corresponding to the outer circumference of the connecting shaft, and an air outlet is formed on the top. Two pairs of guide disks and disks are arranged on the drive along the axial direction. There is an air pressure port on the disk, and an air pressure plate matching the air pressure port is arranged on the outside of the inlet of the air pressure port; The first wind deflector.

In the above, the guide disks are arranged on both axial outer sides of the actuator, and the two disks are arranged between the two guide disks. The diameter of the disk is 0.5-0.7 times the diameter of the guide disks, and the fan blades are fixed on the outer circumference of the two guide disks. superior.

In the above, the second air guide plate is arranged on the inner side of the two guide disks.

In the above, the air outlet of the ejection cover is provided with a partition whose bottom end is fixed at the lower part of the air outlet, and the air outlet is divided into an exhaust channel at the bottom and an ejection channel at the upper part. The first air exhaust port is connected, and the ejection channel communicates with the negative pressure window installed on the ejection cover and the second air exhaust port.

In the above, the air pressure port and the air guide port are respectively inclined inward along the wind direction.

The beneficial effects of the present invention are: the airflow produced during rotation is used to guide it back for heat dissipation, increasing the air exchange rate of air cooling and greatly improving the heat dissipation efficiency.

Each air deflector and air pressure plate can not only ensure smooth air intake and exhaust, but also play the role of heat sink.

The air pressure port and the air guide port are inclined inwardly along the wind direction to meet the intake air volume and reduce noise.

Description of drawings

Fig. 1 is a transverse sectional view of the present invention.

Fig. 2 is a longitudinal sectional view of the present invention.

Figure 3 is a side view of the present invention.

Fig. 4 is a side view of the drive of the present invention after the fan blades are disassembled.

Fig. 5 is a left side view of Fig. 4 .

Fig. 6 is a sectional view taken along line A-A of Fig. 5 .

Fig. 7 is a structural diagram of the booster pressure window.

detailed description

Referring to Figures 1 to 7, the present invention provides an injection-type air-cooled permanent magnet governor, which is composed of an injection cover 1, a transmission and a connecting shaft 11 connected to the motor and the load on both sides of the transmission, wherein , the outer periphery of the actuator is provided with a plurality of fan blades 2 at intervals, an air inlet hole 12 is formed on the outer periphery of the connecting shaft 11 on both sides of the ejection cover 1, and an air outlet is formed on the top, and two pairs of guides are arranged on the actuator along the axial direction. The magnetic disk 10 and the magnetic disk 15, the magnetic disk 10 is arranged on the two axial outer sides of the transmission, the two magnetic disks 15 are arranged between the two magnetic disks 10, the two magnetic disks 10 and the two magnetic disks 15 are respectively connected with the connecting shaft 11 connected to the motor and the load , when the motor drives the connecting shaft 11 to drive the two magnetic discs 10 to rotate, the two magnetic discs 15 also rotate accordingly, and then drive the connecting shaft 11 connected thereto, thereby driving the load.

The diameter of the disk 15 is 0.6 times of the diameter of the guide disk 10, and the fan blade 2 is fixed on the outer circumference of the two guide disks 10. On the guide disk 10 near the air inlet 12, there is a pressure air port 9, and at the entrance of the pressure air port 9 The outer side is provided with the air pressure plate 8 that cooperates with the air pressure port 9, and the two magnetic disks 15 on the inside have an air guide port 17, and a first air guide plate 13 that cooperates with the air guide port 17 is provided outside the outlet of the air guide port 17. A second wind deflector 14 is arranged on the inner side of the two deflector disks 10 . The air pressure port 9 and the air guide port 17 are respectively inclined inwardly along the wind direction.

The air outlet of the injection cover 1 is provided with a partition plate 3 whose bottom end is fixed on the lower part of the air outlet, and the air outlet is divided into an exhaust channel 4 at the bottom and an injection channel 5 at the upper part. The exhaust channel 4 and the injection cover 1 The first air outlets 16 on both sides are connected, and the injection channel 5 communicates with the booster window 6 installed on the injection cover 1 and the second air outlet 7 . The booster window 6 is composed of a plurality of obliquely arranged window vanes 18 .

When the present invention is working, with the rotation of the motor, the air is sucked into the injection cover 1 by the air inlet holes 12 on both sides of the injection cover 1, and then is pressed into the air pressure port 9 by the air guide plate 8 on the guide disk 10 and enters the guide disk 10. and the working cavity between the disk 15. Due to the rotation of the guide disk 10 and the disk 15, the air part in the working chamber between the guide disk 10 and the disk 15 enters the working chamber between the two disks 15 from the air guide port 17 of the disk 15, and is then guided by the first air guide on the disk 15. The plate 13 discharges the working cavity between the two disks 15 ; The air leaving the working chamber varies according to the air flow velocity. The air with a low flow velocity directly leaves the injection cover 1 from the exhaust channel 4 on the upper part of the injection cover 1; Introduced into the ejection cover, the ejection effect is generated through the negative pressure window 6, thereby increasing the air intake of the air inlet holes 12 on both sides of the ejection cover 1, and another part is discharged from the second air outlet 7, reaching a The purpose of temperature control.

Claims (4)

1. An ejector-type air-cooled permanent magnet governor, which is composed of an ejector cover, a driver and connecting shafts on both sides of the driver that are connected to the motor and the load respectively, wherein the outer periphery of the driver is provided with a plurality of wind turbines at intervals. There are air inlet holes on both sides of the ejection cover corresponding to the outer circumference of the connecting shaft, and an air outlet on the top. There is an air pressure port on the disk or the disk, and an air pressure plate matching the air pressure port is arranged on the outside of the inlet of the air pressure port. The first air deflector matched with the air outlet; the air outlet of the ejection hood is provided with a partition whose bottom end is fixed at the lower part of the air outlet, and the air outlet is divided into an exhaust channel at the bottom and an ejection channel at the upper part. The first air outlets on both sides of the ejection cover are connected, and the ejection channel communicates with the booster window installed on the ejection cover and the second air outlet. 2. An injection-type air-cooled permanent magnet governor according to claim 1, characterized in that, the guide disks are arranged on both axial outer sides of the transmission, and the two disks are arranged between the two guide disks, The diameter of the disk is 0.5-0.7 times of the diameter of the guide disk, and the fan blades are fixed on the outer peripheries of the two guide disks. 3. An injection-type air-cooled permanent magnet governor according to claim 2, characterized in that a second air deflector is arranged on the inner side of the two guide discs. 4. An injection-type air-cooled permanent magnet governor according to claim 1, characterized in that the air pressure port and the air guide port are respectively inclined inward along the wind direction.