GB2300676A

GB2300676A - Fan impeller blade

Info

Publication number: GB2300676A
Application number: GB9509210A
Authority: GB
Inventors: Peter Ashworth Webb
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-05
Filing date: 1995-05-05
Publication date: 1996-11-13
Also published as: GB9509210D0

Abstract

An impeller blade has the basic form of a half cylinder (figs.1,2A,2B), a half cone (fig.3A,3B) or polygonal channel (fig.4) sealed at one end, and thereby, incorporates two leading edges which in use induce air or gas or fluid to flow into the centre of the blade and thence to accelerate out of the blade through the open end at right angles to the direction of the flow of the input of the air or gas or fluid.

Description

IMPELLER BLADE This invention relates to an impeller blade its fore design and application in the ova eft of air or gases or fluids with particular reference to destratification and temperature equalisation and the distribution of such air or gases or fluids within given areas.

In particular the destratification of buildings and areas of all types and sizes for public commercial and industrial use is not only difficult to achieve but as a principle is not well understood.

Hiniiui temperature gradiants iust be maintained throughout any given area to ensure ini-u running costs and to provide effective payback periods.

According to the present invention there is provided an impeller blade or number of such impeller blades which whilst loving in a given direction will induce air or gas or fluid ove ent into the said iapeller blade or blades froi both above and below the given direction if that direction be horizontal and discharge it at an angle of 90" in a sideways direction.

This action being particularly suitable in achieving the desired efficient air flow for a destratification system. The mixing of both high and low level air taking place whilst passing through the blade or blades.

The practical effect being to lower the high level tepperature and increase the low level teiperature of any given area resulting in iiniiui teiperature gradiants being achieved throughout the area or areas in which the system has been designed to operate Figure 8.

A specific e.bodiient of the invention will now be described by way of example with reference to the accoipanying drawing in which : - Three such impeller blades are mounted on the circuiference of a disc.

The disc is attached to the spindle of a vertically amounted electric rotor The disc rotating in a horizontal plain. As the disc rotates air is drawn into the impeller blades fro both above and below and discharged sideways at an angle of 900 to the incoming airflow and through 360 by the rotation of the disc Figure 5.

Figure 1 shows in perspective impeller blades mounted in position on a disc fitted to a vertically mounted electric rotor Figure 2 shows an impeller blade in the form of a half cylinder.

Figure 3 shows an impeller blade in the the form of a cone.

Figure 4 shows an impeller blade section of coiposite form not cylindrical.

Figure 5 shows the air flow into and out of a typical impeller blade.

Figure 6 shows an impeller blade of multi unit form.

Figure 7 shows a typical installation and the air flow created within a building to achieve the desired destratification.

Claims

1. An impeller blade in the form of a half cylinder which has two leading edges with one end of the half cylinder closed and which can be punted on the periphery of a disc that can be rotated so that by rotation of the disc ioveeent and direction is given to the impeller which collects air fro both leading edges the air is then conveyed towards the centre of the half cylinder and accelerated by centrifugal force and pressure so that it is discharged at an angle of 900 to the inflow at the leading edges through the open end of the half cylinder Figure 2 and Figure 5.

2. An Impeller Blade as in Claim 1 wherein the earns of providing movement of the Impeller Blade is such that the direction is not circular.

3. An impeller Blade as in Claim 1 or Claim 2 but fitted as a number of blades on a single disc Figure 1.

4. An impeller blade as in Claim 1 or Claims 2 or Claim 3 but of conical form not cylindrical Figure 3.

5. An impeller blade as in Clain 1 or Claim 2 or Clali 3 or Claim 4 but of a composite form not cylindrical Figure 4.

6. An inpeller blade as in Claim 1 or Claii 2 or Clain 3 or Claim 4 or Claii 5 which can be moulded or cast as an integral part of the disc or roving device Figure 1.

7. An impeller blade of multi section construction Figure 6.

8. An impeller blade as in Claim 1 or Claim 2 or Claim 3 or Claim 4 or Claim 5 or Claim 6 which can have its outlet angle set relative to the air or gas or fluid input angle or the direction of travel at an angle different than one of 900.