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Integrated device of nose cone and shell of convertor

A technology of frequency converter and rectifying cap, which is applied in the field of integrated device of rectifying cap and frequency converter housing, can solve the problems of eddy current, large noise, and reduced efficiency, and achieve good processing technology, reduced manufacturing cost, and improved fan efficiency Effect

Active Publication Date: 2014-04-30
PINGAN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when the gap between the rectifying cap and the larger, the greater the eddy current and noise generated, the more obvious the reduction in efficiency

Method used

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  • Integrated device of nose cone and shell of convertor
  • Integrated device of nose cone and shell of convertor
  • Integrated device of nose cone and shell of convertor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, the present invention includes a rectifying cap 1, a bracket 3 and a frequency converter housing 7, and more than one eye bolt hole seat 6 is welded on the housing end plate 702 at the end of the frequency converter housing 7, and the bracket 3 is fixedly connected On the eyebolt hole seat 6 , the rectifier cap 1 is fixedly connected to the outer circle of the bracket 3 and coincides with the center of the inverter housing 7 . The bracket 3 is welded by a flat steel ring having substantially the same outer diameter as the inverter housing 7 and two flat steel bars, and the flat steel bars are welded in the flat steel ring to correspond to the horizontal plane where the ring bolt hole seat 6 is located. The width direction of the flat steel bar is parallel to the plane where the diameter of the flat steel ring is located, and holes are drilled on the flat steel bar corresponding to the eyebolt hole seat 6, and more than one screw hole is evenly distributed i...

Embodiment 2

[0037] Embodiment 2, the present invention also provides a kind of rectifying cap and frequency converter housing integrated device, adopted technical scheme is: it comprises rectifying cap 1, support 3 and frequency converter housing 7, the method of frequency converter housing 7 Lan 701 is fixedly connected to the support 3, and the rectifying cap 1 is fixedly connected to the outer circle of the support 3, and coincides with the center of the frequency converter housing 7. The bracket 3 is welded by a flat steel ring having substantially the same outer diameter as the inverter housing 7 and two flat steel bars, the flat steel bars are welded in the flat steel ring, and the width of one of the flat steel bars is , the thickness direction is parallel to the plane where the diameter of the flat steel ring is located, the width and thickness direction of the other flat steel bar is perpendicular to the plane where the diameter of the flat steel ring is located, and is parallel t...

Embodiment 3

[0039] Embodiment 3, the present invention also provides a kind of rectifying cap and frequency converter housing integration device, the adopted technical scheme is: it comprises rectifying cap 1 and frequency converter housing 7, in the cylindrical shape of frequency converter housing 7 There are more than one screw holes evenly distributed around the end of the housing enclosure plate 704. The rectifying cap 1 is a semicircular spherical surface with a straight edge, and more than one screw hole is evenly distributed in the circumferential direction of the straight edge and is connected with the flat steel ring or The position, the number of screw holes, and the diameter of the waist-shaped through hole on the enclosure plate 704 correspond, and the rectifying cap 1 is fixed on the outside of the cylinder of the frequency converter housing 7 by screws, and coincides with the center of the frequency converter housing 7 . refer to Figure 1 to Figure 17 , and the rest are the...

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PUM

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Abstract

An integrated device of a nose cone and a shell of a convertor is mainly aimed at solving the problems that the connection interval of the nose cone and the shell of the convertor is big so that the radial deflection is easy to happen, the vortex flow and noise are big, the resistance of channels is high, and the efficiency of fans is low in the prior art. The integrated device of the nose cone and the shell of the convertor comprises a nose cone (1), a support (3),and a shell of a convertor (7), wherein a shell end plate (702) arranged on the end of the shell of the convertor (7) is connected with one or more eyebolt hole seats (6) in a welded manner, the support (3) is fixedly connected with the eyebolt hole seats (6), and the nose cone is fixedly connected with the outside of the periphery of the support (3) and coincides with the center of the shell of the convertor(7). The integrated device of the nose cone and the shell of the convertor is mainly used for axial flow fans.

Description

technical field [0001] The invention relates to an integrated device of a rectifying cap and a casing of a frequency converter. Background technique [0002] At present, a rectifying cap is usually designed in the airflow inlet end of the axial flow fan and the flow channel at the front end of the flow channel type frequency converter, and the outer cylinder of the inlet part is designed as an air collection cover with a tapered flow channel, thereby improving the flow rate of the flow channel. Air conditions, improve the efficiency of the fan, reduce the noise of the fan. The structure of the rectifying cap and the axial clearance with the hub of the impeller have a great influence on the performance of the fan. In the traditional structure, the fairing cap is welded into a whole with the collecting cover through the support of the spokes, and then connected to the main body of the fan or the outer cylinder of the flow channel inverter through the flange. Due to errors in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/64F04D29/66F04D29/54H02M1/00
Inventor 谢星明肖务里汤武军娄炳炎
Owner PINGAN ELECTRICAL