A structure for locking and fixing a pure iron sheet on a rotor and a locking and fixing method
A fixing method and iron sheet technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, etc., can solve problems such as loosening, pure iron sheet falling off, affecting the normal operation of the rotor, etc., to increase stability and reduce The effect of the possibility of shedding
Active Publication Date: 2016-06-08
NANJING CIGU TECH CORP LTD
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Problems solved by technology
[0002] In the existing centrifugal fan, it usually includes a rotor, a magnetic bearing installed above the rotor, and a pure iron sheet. In the prior art, the pure iron sheet is usually assembled with the rotor through a shrink-fit process, and is fixed at the end by flanging. , the magnetic bearing is placed above it (not in contact with the rotor), but this connection method often causes the outer ring of the pure iron sheet to be deformed gradually after the rotor has been running for a long time, and the fixed form of the above-mentioned pure iron sheet flanging is in The rotor will loosen after running for a long time, which will cause the entire pure iron sheet to fall off, which greatly affects the normal operation of the rotor
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[0018] Please refer to figure 1 with figure 2 As shown, in the structure in which the pure iron sheet is locked and fixed on the rotor in the present invention, the pure iron sheet 3 is installed on the rotor 1, and a magnetic bearing 2 is installed on the rotor 1 above the pure iron sheet 3, wherein the magnetic bearing 2 Installed on the bearing bracket 6, a magnetic isolation ring 4 close to the pure iron sheet 3 is set on the rotor 1 below the pure iron sheet 3, wherein the pure iron sheet 3 and the magnetic isolation ring 4 are installed There are connecting screws 5 that the two are locked and installed together. Wherein the connecting screws 5 are several arranged at equal intervals along a certain circumferential direction on the pure iron sheet 3 .
[0019] The spacer magnetic ring 4 of the present invention is a hollow cylindrical structure with a wide top and a narrow bottom, and the magnetic spacer ring 4 includes an upper part and a lower part, wherein the oute...
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The invention discloses a structure for locking and fixing a pure iron sheet on a rotor and a locking and fixing method. The pure iron sheet is installed on the rotor, and a magnetic isolation ring is sleeved on the position below the pure iron sheet on the rotor. The ring is closely attached to the pure iron sheet, and the connecting screws that lock and fix the two together are installed on the pure iron sheet and the magnetic isolation ring. The magnetic isolation ring is a hollow cylindrical structure with a wide top and a narrow bottom. The ring includes an upper part and a lower part. The diameter of the outer edge of the upper part is larger than that of the lower part. In the magnetic isolation ring, there are through holes that penetrate the upper and lower surfaces of the magnetic isolation ring and surround the periphery of the rotor. The connecting screws are installed on the magnetic isolation ring. On the upper part, a rotor sleeve is installed on the lower part of the magnetic isolation ring. The invention installs a magnetic isolation ring on one side of the pure iron sheet, connects the magnetic isolation ring and the pure iron sheet together through connecting screws, and adds a corresponding assembly process, which greatly increases the stability of the connection between the pure iron sheet and the rotor , reducing the possibility of pure iron flakes falling off.
Description
Technical field: [0001] The invention relates to a structure for locking and fixing a pure iron sheet on a rotor and a locking and fixing method, belonging to the technical field of centrifugal fans. Background technique: [0002] In the existing centrifugal fan, it usually includes a rotor, a magnetic bearing installed above the rotor, and a pure iron sheet. In the prior art, the pure iron sheet is usually assembled with the rotor through a shrink-fit process, and is fixed at the end by flanging. , the magnetic bearing is placed above it (not in contact with the rotor), but this connection method often causes the outer ring of the pure iron sheet to be deformed gradually after the rotor has been running for a long time, and the fixed form of the above-mentioned pure iron sheet flanging is in The rotor will loosen after running for a long time, which will cause the entire pure iron sheet to fall off, which greatly affects the normal operation of the rotor. [0003] Therefor...
Claims
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IPC IPC(8): H02K1/28
Inventor 佘浩林英哲吴立华董继勇
Owner NANJING CIGU TECH CORP LTD