Unlock instant, AI-driven research and patent intelligence for your innovation.

Centrifugal fan

a centrifugal fan and fan body technology, applied in the direction of non-positive displacement fluid engines, radial flow pumps, pump components, etc., can solve the problems of reducing the efficiency of centrifugal fans and generating airflow

Inactive Publication Date: 2016-10-06
NIPPON DENSAN CORP
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a type of fan with an unusual shape that helps move air in a way that reduces noise and improves efficiency. The fan includes an impeller, a motor, and a housing. The housing has an intake port, an exhaust port, and two flow paths that create a scroll shape. The fan is designed to be quieter and more effective than traditional fans.

Problems solved by technology

This poses a problem in that a loss of airflow is generated and the efficiency of the centrifugal fan is reduced.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Centrifugal fan
  • Centrifugal fan
  • Centrifugal fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015]A centrifugal fan according to one preferred embodiment of the present disclosure will now be described with reference to the drawings. The scope of the present disclosure is not limited to the preferred embodiment described below but may be arbitrarily changed without departing from the scope of the technical idea of the present disclosure. In the drawings referred to below, for the sake of making individual configurations easily understandable, individual structures are sometimes shown in the reduced scale and number differing from those of actual structures.

[0016]In the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional rectangular coordinate system. In the XYZ coordinate system, the Z-axis direction is a direction parallel to the axial direction of a center axis J illustrated in FIG. 1. The X-axis direction is a direction orthogonal to the Z-axis direction and orthogonal to an exhaust port 62 illustrated in FIG. 1. The Y-axis direction is a di...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A centrifugal fan includes an impeller, a motor rotating the impeller about a center axis, and a housing accommodating the impeller. The housing includes an intake port arranged above the impeller, an exhaust port arranged radially outward of the impeller, an annular upper flow path, and a lower flow path arranged below the upper flow path and connected to the upper flow path. The annular upper flow path can be partially arranged between a housing inner circumferential surface and the impeller in a radial direction. The upper flow path and the lower flow path are arranged to define a flow path having a scroll shape. The lower flow path extends along the housing inner circumferential surface. The lower flow path has a lower flow path terminal end opened toward the exhaust port. The lower flow path has a lower flow path start end closed with respect to the exhaust port.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present disclosure relates to a centrifugal fan.[0003]2. Description of the Related Art[0004]There is available a centrifugal fan which includes an air flow path positioned radially outward of an impeller and a wind tunnel positioned below the air flow path. The air discharged radially outward from the impeller flows from the air flow path toward the wind tunnel. Then, the air is discharged to the outside from an exhaust port.[0005]In the centrifugal fan mentioned above, the wind tunnel positioned below the air flow path has an annular shape. For that reason, there may be a case where a part of the air guided to the vicinity of the exhaust port through the wind tunnel flows toward the upstream side of the wind tunnel without being discharged from the exhaust port. This poses a problem in that a loss of airflow is generated and the efficiency of the centrifugal fan is reduced.SUMMARY OF THE INVENTION[0006]In one aspe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F04D29/42F04D25/08F04D29/28F04D17/16
CPCF04D29/4233F04D29/281F04D25/08F04D17/16F04D29/4206F04D29/4226F04D29/441F04D25/06
Inventor HAYAMITSU, RYOSUKEKITAMURA, JUMPEI
Owner NIPPON DENSAN CORP