JPH0511759U - Power generation / transmission device via airtight bulkhead - Google Patents

Abstract

(57) [Summary] [Purpose] To realize a power generating and transmitting device with excellent airtightness and a simple structure. [Structure] In a power generation / transmission device connected to a rotating load (1) through an airtight partition (3), a stator (1
1) is a stator core (14) in which a stator winding (13) is arranged on the outer peripheral side in an airtight stator frame (12) made of a non-magnetic material and protruding from an airtight partition wall (3) in a bottomed cylindrical shape. ), The rotor (16) is a rotor frame (12) having a permanent magnet on the inner peripheral side with a gap (17) on the outer periphery of the stator frame (12). A yoke is formed and attached to a rotor frame (20) connected to the load (1) to form a synchronous motor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power generation / transmission device via an airtight partition.

[0002]

[Prior Art]

 As shown in Fig. 3, the power of a rotating load that operates in an atmosphere where the prime mover cannot be used, such as explosive gas or corrosive gas, has an airtight bulkhead (3) between the rotary load (1) and the electric motor (2) that is the prime mover. And a shaft seal (4) to transmit power, or as shown in FIG. 4, an airtight partition (3) and a protruding partition (3a) made of a non-magnetic material protruding from the airtight partition in a cylindrical shape with a bottom. Power is transmitted by a magnetic coupling (5) that has permanent magnets inside and outside of. 3 and 4, (6) is a bearing stand, (7) is a bearing, (8) is a shaft, and (9) is a coupling.

[0003]

[Problems to be solved by the device]

 As shown in FIG. 3, when the rotational force of the electric motor (2) is transmitted by the through shaft (8) using the shaft seal (4), the gas leaks from the seal portion and the shaft (8) length becomes long. Therefore, there is a problem in that the intermediate bearing (7) is required.

When the rotational force of the electric motor (2) is transmitted by the magnetic coupling (5) as shown in FIG. 4, the airtightness is better than that of FIG. 3, but the number of parts is large. Therefore, the power transmission system becomes complicated. Also, there is a problem that the workability of disassembling and assembling the magnetic coupling (5) is poor due to the magnetic attraction force of the permanent magnets provided on both rotating bodies of the magnetic coupling (5).

An object of the present invention is to provide a power generating / transmitting device having excellent airtightness and a simple structure.

[0006]

Means for Solving the Problems In order to achieve the above object, the present invention provides a power generating / transmitting device connected to a rotating load through an airtight partition, in which a stator has a cylindrical shape with a bottom and a bottom. Inside the hermetic stator frame made of protruding non-magnetic material, the stator core with the stator windings arranged on the outer circumference side is housed, and the rotor is permanently attached to the inner circumference side with a gap on the outer circumference of the stator frame. The rotor magnetic pole having a magnet is attached to a rotor frame in which a yoke is made of a magnetic material and a cylindrical portion is connected to a load to form a synchronous motor.

[0007]

[Action]

 Since the present invention is configured as described above, a rotating magnetic field is generated by exciting the stator winding, the magnetic flux is combined with the rotor magnetic pole to pull the rotor magnetic pole, and torque is generated in the shaft portion. Power is transmitted to the load by rotating it.

[0008]

【Example】

 (First Embodiment) A first embodiment of the present invention will be described below with reference to FIG.

The stator (11) is made of a non-magnetic material protruding from the airtight partition wall (3) in a cylindrical shape with a bottom. Inside the airtight stator frame (12), a stator winding (13) is arranged on the outer peripheral side. It is made by housing the stator core (14) and cooled by the heat exchanger (15). The rotor (16) has rotor magnetic poles (18), which are permanent magnets, on the inner peripheral side of the stator frame (12) with a gap (17) in between, and uses a cylindrical portion as a magnetic material to form a rotor yoke. It also serves as (19) and is mounted on the rotor frame (20) connected to the load (1) by the coupling (9). A combination of the stator (11) and the rotor (16) forms a synchronous motor that generates power.

According to the above configuration, by exciting the stator winding (13), a rotating magnetic field is generated, the magnetic flux pulls the rotor magnetic pole (18), and torque is generated in the shaft (8) portion to rotate. The power is transmitted to the load (1) by rubbing.

Therefore, according to the first embodiment, since it has excellent airtightness and the power generation and transmission are performed by one device, the number of parts is small, and the power generation is easy to disassemble / assemble with a simple structure. A transmission device can be provided.

Second Embodiment A second embodiment shown in FIG. 2 is one in which a bearing (7) is provided for a shaft (8) when the rotor (16) is heavy, and the other embodiments are The same as 1.

Even in this case, the same effect as that of the first embodiment can be obtained.

It should be noted that the present invention may be an integrated electric blower in which a fan boss is provided on the outer periphery of the rotor frame and an impeller is attached.

[0015]

[Effect of the device]

 As described above, according to the present invention, since it has excellent airtightness and power generation and transmission are performed by one device, the number of parts is small, and the generation and transmission of power is easy with a simple structure and disassembly / assembly. A device can be provided.

[Brief description of drawings]

FIG. 1 is a vertical sectional elevation view of a main part showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional elevation view of a main part showing a second embodiment of the present invention.

FIG. 3 is a vertical sectional elevation view of a main part showing a first conventional example.

FIG. 4 is a vertical sectional elevation view of a main part showing a second conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Load 3 ... Airtight partition 11 ... Stator 12 ... Stator frame 13 ... Stator winding 14 ... Stator core 16 ... Rotor 17 ... Gap 18 ... Rotor magnetic pole 20 ... Rotor frame

Claims (1)

[Claims for utility model registration] [Claim 1] In a power generation and transmission device connected to a rotating load through an airtight partition, the stator is made of a non-magnetic material protruding from the airtight partition in a cylindrical shape with a bottom. A hermetically-sealed stator frame accommodates a stator core having stator windings arranged on the outer peripheral side, and the rotor has a permanent magnet arranged on the inner peripheral side with a gap provided on the outer periphery of the stator frame. A power generation / transmission device via an airtight partition, wherein a magnetic pole is attached to a rotor frame in which a cylindrical portion is formed of a magnetic material to form a yoke and connected to a load to form a synchronous motor.