Patent
1997-01-13
1998-05-05
Hafiz, Tariq R.
395 3, 395900, 15319, 15339, G06F 1700, A47L 928
Patent
active
057488533
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to vacuum cleaners which comprise a housing having a dust compartment containing a dust bag, and a suction compartment communicating with the dust compartment by an opening for the flow of air and comprising a motor-fan group; and a suction nozzle of which one of the ends communicates with the dust bag by a connection opening provided in the housing and of which the other end is coupled to a suction member having a suction opening.
It relates more particularly to vacuum cleaners which comprise also an automatic control device of the power of the motor-fan group, of the type comprising means for detecting the nature of the floor and fuzzy logic control means.
BACKGROUND OF THE INVENTION
In known vacuum cleaners with so-called fuzzy logic, the detection means of the nature of the floor comprise generally a detector of the vacuum existing between the motor-fan group and the dust compartment, the fuzzy inference being then established by the detected vacuum so as to control automatically the power of the motor-fan group according to the result of this fuzzy inference. If such vacuum cleaners with fuzzy logic have effectively a good automatic regulation of the power of the motor-fan group thanks to the detected vacuum, their power on the other hand is not at all adapted automatically as a function of the nature of the floor encountered and of a pushing force acceptable for the user, thereby reducing substantially the efficiency of the cleaner, as well as the working comfort of the user. Thus, the problem arises that in fact, in certain types of floor covering (wall to wall or thick carpet), the suction attachment becomes too hard to push because of the too great "load" due to the vacuum which tends to grip the accessory to the wall to wall carpet or rug, from which results fatigue and pushing effort altogether unacceptable to the user.
SUMMARY OF THE INVENTION
The invention has in particular the object of overcoming these drawbacks and providing, in a simple and effective manner, a vacuum cleaner with fuzzy logic, of the type described above, whose power of the motor-fan group will be automatically adapted as a function of the nature of the floor encountered whilst providing to the user a pushing force of the suction member which will be completely acceptable to clean under the best conditions possible.
According to the invention, the automatic control device comprises also detection means of the dynamic displacement of the suction member, and fuzzy logic control means are adapted to provide a fuzzy inference at the outlet of the detection means for the nature of the floor and at the outlet of the detection means for dynamic displacement of the suction member so as to control the power of the motor-fan group according to the result of said inference.
Thus, thanks to this combination of detection means of the nature of the floor and detection means of the dynamic displacement of the suction member, the power of the cleaner with fuzzy logic and, concomitantly, the force of displacement of the suction member, are completely suitable no matter what the nature of the floor encountered.
Preferably, the detection means of the dynamic displacement of the suction member are constituted by detection means of the mean speed of said suction member.
The invention also has for its object to provide an automatic adaptation of the power of the motor-fan group of the cleaner, not only as a function of the nature of the floor and of the force of displacement of the suction member exerted by the user, but also as a function of the degree of filling of the dust bag.
Thus, according to one particularity of the invention, the detection means of the nature of the floor comprise a detector of the vacuum existing between the motor-fan group and the dust compartment, and the automatic control device comprises also means permitting calculating sequentially a so-called diaphragm value, defined as a function of the suction opening of the suction member and representative of the na
REFERENCES:
patent: 4977639 (1990-12-01), Takahashi et al.
patent: 5233682 (1993-08-01), Abe et al.
patent: 5243732 (1993-09-01), Koharagi et al.
patent: 5255409 (1993-10-01), Fujiwara et al.
patent: 5276939 (1994-01-01), Uenishi
Hafiz Tariq R.
Moulinex (S.A.)
Rhodes Jason W.
LandOfFree
Vacuum cleaner with fuzzy logic control unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum cleaner with fuzzy logic control unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum cleaner with fuzzy logic control unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-65053