Outlet variable-diameter connecting pipe used for centrifugal refrigeration fan
An export and fan technology, applied in mechanical equipment, non-variable-capacity pumps, machines/engines, etc., can solve the problems affecting the appearance quality of products, blackening of the surface of the pipe body, and thick plate thickness, etc., to achieve light weight and beautiful appearance. , create convenient effects
Inactive Publication Date: 2014-06-04
WEIHAI CREDITFAN VENTILATOR
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Problems solved by technology
[0002] In the existing centrifugal fans for food refrigeration, the outlet reducing pipe is usually a welded structure, which includes a mounting flange, two opposite transverse side plates and longitudinal side plates, the transverse side plates are inverted trapezoidal, and the longitudinal side plates The side plate is trapezoidal. During processing, the transverse side plate and the longitudinal side plate are usually welded and fixed together by welding process, so that the reducing tube forms a tapered hole, and then the transverse side plate and the longitudinal side plate are respectively welded and fixed on the On the installation flange, the disadvantage is that the plate used is thicker and heavier, and welding slag is easy to form at the welding place. After the welding is completed, sanding is required. Since the material of the plate is stainless steel, the surface of the pipe body turns black after sanding. , affecting the appearance quality of the product
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[0013] Below in conjunction with accompanying drawing, the present invention is further described:
[0014] As shown in the attached figure, an outlet variable-diameter connecting pipe for a centrifugal refrigeration fan includes a mounting flange 1, two opposing lateral side plates 2 and longitudinal side plates 3, the lateral side plates 2 are tapered, and the longitudinal side plates 3 are opposite to each other. The lateral side plate 2 is in the shape of an inverted cone, and is characterized in that a horizontal connecting plate 4 and a vertical connecting plate 5 are provided. The connecting plates 4 are cross-fixed and connected, the two sides of the transverse side plates 2 are superimposed and fixed by the longitudinal connecting plates 5 and the longitudinal side plates 3 respectively, the two sides of the longitudinal side plates 3 are respectively fixed by the engagement of the transverse connecting plates 4 and the transverse side plates 2, and the transverse side...
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The invention relates to the technical field of fans, in particular to an outlet variable-diameter connecting pipe used for a centrifugal refrigeration fan. The outlet variable-diameter connecting pipe comprises an installation flange, transverse lateral plates and longitudinal lateral plates, wherein the transverse lateral plates and the longitudinal lateral plates are arranged oppositely in a pairwise mode, the transverse lateral plates are in the shape of a cone and the longitudinal lateral plates are in the shape of an inverted cone relative to the transverse lateral plates. The outlet variable-diameter connecting pipe used for the centrifugal refrigeration fan is characterized in that transverse connecting plates and longitudinal connecting plates are arranged, the two sides of each transverse lateral plate are fixedly connected with the corresponding longitudinal connecting plates in a crossed mode, the two sides of each longitudinal lateral plate are fixedly connected with the corresponding transverse connecting plate in a crossed mode, the two sides of each transverse lateral plate are fixed with the corresponding longitudinal lateral plates through the corresponding longitudinal connecting plates in an overlapped mode, the two sides of each longitudinal lateral plate are fixed with the corresponding transverse lateral plates through the corresponding transverse connecting plates in a meshed mode, the lower ends of the transverse lateral plates and the lower ends of the longitudinal lateral plates are connected with the installation flange in a point welding mode, and groove-type reinforcing ribs are arranged at the positions of outlets of the upper ends of the transverse lateral plates and the upper ends of the longitudinal lateral plates. By the adoption of the structure, the outlet variable-diameter connecting pipe has the advantages of being simple in structure, attractive in appearance, convenient to manufacture, low in weight and the like.
Description
technical field [0001] The invention relates to the technical field of fans, in particular to an outlet variable-diameter connecting pipe for a centrifugal refrigeration fan. Background technique [0002] In the existing centrifugal fans for food refrigeration, the outlet reducing pipe is usually a welded structure, which includes a mounting flange, two opposite transverse side plates and longitudinal side plates, the transverse side plates are inverted trapezoidal, and the longitudinal side plates The side plate is trapezoidal. During processing, the transverse side plate and the longitudinal side plate are usually welded and fixed together by welding process, so that the reducing tube forms a tapered hole, and then the transverse side plate and the longitudinal side plate are respectively welded and fixed on the On the installation flange, the disadvantage is that the plate used is thicker and heavier, and welding slag is easy to form at the welding place. After the weldi...
Claims
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IPC IPC(8): F04D29/00
Inventor 乔君正
Owner WEIHAI CREDITFAN VENTILATOR