GB2277677A

GB2277677A - Vacuum cleaner with recirculated exhaust air

Info

Publication number: GB2277677A
Application number: GB9312437A
Authority: GB
Inventors: Benjamin Edginton
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-08
Filing date: 1993-06-16
Publication date: 1994-11-09
Anticipated expiration: 2013-06-16
Also published as: GB9309530D0; GB2277677B; GB9312437D0

Abstract

A vacuum cleaner in which exhaust air is recirculated to the cleaning head comprises flexible pipes or hose 3, arranged to return contaminated air from the dust bag to nozzles 4 directed on to the carpet (or object to be cleaned) at an inward angle where it assists in removing dust arid dirt which is then drawn into the cleaner. Alternatively the pressurised air can be returned through the vacuum cleaner housing to the front of the machine and down on to the carpet via holes 15 (Fig. 5). In both methods most of the air and dust which comes from the dust bag is retained within the cleaner and returned to the dust bag, thus reducing contamination and odour. <IMAGE>

Description

"IMPROVEMENTS RELATING TO A VACUUM CLEANER This invention relates to a way of improving the efficiency of a conventional vacuum cleaner.

As the efficiency of the dust bag in a conventional vacuum cleaner is never 100% it means that some dust germs and smells must escape from the conventional vacuum cleaner into the surrounding air. It was to overcome the above problems that the invention "improvements relating to a vacuum cleaner" was made.

The present invention has relation to an improvement to a vacuum cleaner by the retention and recycling of the air which is normally allowed to escape into the surrounding atmosphere.

According to the present invention there is provided improvements related to a vacuum cleaner comprizing seals to seal up the vents on the dust bag container where the air is normally allowed to escape.

The air can now be taken through pipes or hose to which Nozzles are fitted, these Nozzles are clipped to the front of the vacuum cleaner in such a way that the air being forced from them is being returned (in close contact with the carpet or object which is being cleaned )to the partial vacuum that is being created by the vacuum cleaner.

Alternative the presurised air can be taken down to the vacuum cleaner housing as in Figure 5. where it is released through the holes 15,Fig,5 above and just to the front of the rotary brush 14,Fig,5.

In either case the air will pass over the object to be cleaned and assist in removing dust and dirt which will be returned to the partial vacuum created by the vacuum cleaner.

This means that any dust that has escaped from the dust bag will be returned to the dust bag not to the surrounding atmosphere.

A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which Figure 1 shows a side view indicating the seals to the dust bag container and one of the return pipes and nozzle.

Figure 2 shows a front view indicating the two return pipes with nozzles to the front of the machine.

Figure 3 shows in perspective, the lower part of the cleaner with the seals in place and the pipes and nozzles atatched to the body of the cleaner.

Figure 4 shows an isometric view of the adaptor plate with the pipes atatched Figure 5 shows an exploded isometric view of the alternative method of taking the presurised air to the front of the machine through the housing of the vacuum cleaner.

Referring to the drawing the improvement consists of seals 1 shown in Fig 1 and Fig 3 which will prevent the pressurised air from escaping to the surrounding atmosphere.

In order that the hose pipes 3.Figl can be attached to the Dust Bag Container 7.Fig,l two Flanges 2.Fig,l are fastened to the the dust bag containers or to a clip on plCILo 19.Fi,4 whit:h is used to adapt a vacuum cleaner which has air vents that are low down on the front of the dust bag container).

The Hose or Pipes are connected to the Nozzles 4.Fig,1 which are attached to the main body 6.Fig,l of the vacuum cleaner with the clips 8.Fig,l.

The Nozzles are fashioned with a Lip 5.Fig,1 in order to return the pressurised air back through the pile of the Carpet that is being cleaned.

In the alternative method as shown in Figure 5, the pressurised air is allowed through the holes 9,Fig,5 and the flexible rectangular pipe 10.Fig,5 into the vacuum cleaner housing 6. Fig,5. where it will travel through to the front of the machine and then down through the holes 15.Fig,5 to a suitable place just to the front of the rotary brush 14.Fig,5 Which ever method is used the pressurised air will assist in removing dirt and dust which will then be picked up and returned to the dust bag together with any dust etc that may have previously escaped from the dust bag and is still suspended in this air.

Claims

" CLAIMS "

1.Improvements related to a vacuum cleaner comprizing seals to seal up the vents on the dust bag container where the air is normally allowed to escape.

The air can now be taken through pipes or hose to which Nozzles are fitted, these Nozzles are clipped to the front of the vacuum cleaner in such a way that the air being forced from them is being returned (inclose contact with the carpet or object which is being cleaned )to the partial vacuum that is being created by the vacuum cleaner.

Alternatively the pressureised air can be taken down to the vacuum cleaner housing as in Figure 5. where it is released through the holes 15,Fig,5. above and just to the front of the rotary brush 14,Fig,5.

2. An improvement relating to a vacuum cleaner as claimed in 1 where any smell that is suspended in the pressurised air is also retained within the vacuum cleaner.

3. An improvement relating to a vacuum cleaner as claimed in 1 where any germs that are suspended in the pressurised air are also retained within the vacuum cleaner.

4. An improvement relating to a vacuum cleaner as claimed in 1 were the air in passing over the motor removes the need for other cooling vents making the machine quieter.

5. An improvement relating to a vacuum cleaner as claimed in 1 and 4, where the motor will not have to work so hard and will therefore be more efficient.

6. an improvement relating to a vacuum cleaner substantialy as described herein with reference to Figures 1-5 of the accompanying drawings.