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Fully enclosed outer fan type rotary motor and outer gas fan set

A technology of rotating electrical machines and external air, which is applied in the direction of electrical components, electric components, electromechanical devices, etc., which can solve problems such as the performance degradation of rotating electrical machines and achieve the effect of improving cooling capacity

Active Publication Date: 2020-04-21
TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the power of the external air fan uses a part of the rotational energy of the rotating electric machine, so an increase in the capacity of the external air fan, etc., leads to a decrease in the performance of the rotating electric machine.

Method used

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  • Fully enclosed outer fan type rotary motor and outer gas fan set
  • Fully enclosed outer fan type rotary motor and outer gas fan set
  • Fully enclosed outer fan type rotary motor and outer gas fan set

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0031] figure 1 It is an elevational sectional view showing the structure of the fully closed external fan-type rotating electrical machine according to the first embodiment. The fully enclosed external fan type rotating electrical machine 500 includes a rotor 10 , a stator 20 , a coupling opposite side bearing 31 , a coupling side bearing 32 , a frame 40 , a bearing bracket 45 , a cooler 50 , and an external air fan group 100 .

[0032] The rotor 10 has a rotor shaft 11 extending horizontally in a rotation axis direction (hereinafter, referred to as an axial direction), and a rotor core 12 mounted on the radially outer side of the rotor shaft 11 .

[0033] A coupling object is formed at one end of the rotor shaft 11 in the axial direction, that is, if the fully closed outer fan type rotating electrical machine 500 is an electric motor, a load to be driven is formed, and if the fully closed outer fan type rotating electric machine 500 is a power generation If the motor is us...

no. 2 approach

[0092] Figure 7 It is an elevational sectional view showing the structure of the fully closed external fan-type rotating electrical machine according to the second embodiment. also, Figure 8 は indicates the configuration of the external air fan group Figure 7 The VIII-VIII line is facing the front view.

[0093] This embodiment is a modification of the first embodiment. The outside air fan group 200 of the present embodiment includes a first fan 210 and a second fan 220 .

[0094] The first fan 210 is directly connected to the rotor shaft 11 and has substantially the same structure as the first fan 110 of the first embodiment. However, unlike the first embodiment, the performance of the first fan 210 is not lowered to match the performance of the second fan 220, but a cooler capable of supplying the fully-closed external fan-type rotating electrical machine 500 substantially independently is provided. 50 required cooling air volume.

[0095] The capacity of the second...

no. 3 approach

[0098] Figure 9 It is a front view which shows the structure of the external air fan group of the fully closed external fan type rotating electrical machine of 3rd Embodiment. The outdoor air fan group 300 according to the third embodiment includes a first fan 310 and a second fan 320 .

[0099]The 1st fan 310 and the 2nd fan 320 are set to the capacity|capacitance which can supply each about half of the cooling air volume required by the cooler 50 which are the same as each other.

[0100] The first fan 310 and the second fan 320 are formed so as to be rotatable around shafts that are stationary and fixed, respectively. Alternatively, the shaft may be stationary and fixed so as to be rotatable.

[0101] The first fan 310 is rotated by transmitting the rotation of the rotor shaft 11 by the rotation transmitting portion 301 . The rotation transmission part 301 connects the rotor shaft 11 side and the first fan 310 side so that the first fan 310 and the rotor shaft 11 rotate...

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PUM

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Abstract

The invention provides a cooler of a fully enclosed outer fan type rotary motor. The cooling performance of the cooler is improved. The fully enclosed outer fan type rotary motor (500) comprises a rotor (10), which comprises a rotor shaft (11) and a rotor iron core (12); a stator (20), which comprises a stator iron core (21) and a stator winding (22); a framework (40); a combination side bearing (32), a combination opposite side bearing (32); two bearing brackets (45); inner fans (15b, 15a), which are arranged between the rotor iron core and the combination side bearing and between the rotor iron core and the combination opposite side bearing respectively; a cooler (50), which has a plurality of cooling pipes (51), an inlet end plate (52), an outlet end plate (53), and a cooler cover (54),wherein the inlet end plate and the outlet end plate support two ends of the cooling pipes (51); and an outer gas fan set (100), which supplies outer gas to the interiors of the plurality of coolingpipes, and comprises a first fan (110), which rotates in the same direction of the rotor shaft; and a second fan (120), which rotates in an opposite direction relative to the rotation direction of therotor shaft.

Description

technical field [0001] The present invention relates to a fully closed external fan type rotary electric machine and its external air fan group. Background technique [0002] In a rotating electrical machine, iron loss due to eddy currents generated during operation occurs in the rotor core and stator core, and copper loss due to Joule heat occurs in stator windings and the like. [0003] In order to reduce the eddy current, a multi-layer structure in which disk-shaped electromagnetic steel sheets each made of ferromagnetic material and having an opening in the center are stacked in the axial direction for many rotor cores and stator cores. Further, in the fully enclosed rotating electrical machine, the cooling gas is contained in the closed space, and the cooling gas is circulated to remove heat. [0004] Furthermore, many fully enclosed rotary electric machines are provided with coolers. In the cooler, the cooling gas flowing outside the cooling pipe is cooled by the coo...

Claims

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Application Information

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IPC IPC(8): H02K9/00
CPCH02K9/00
Inventor 古贺大贵
Owner TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP