Baths – closets – sinks – and spittoons – Disinfection – Dispensing to water in flush tank
Patent
1999-02-05
2000-09-19
Michalsky, Gerald A.
Baths, closets, sinks, and spittoons
Disinfection
Dispensing to water in flush tank
42276, 42277, 137268, G05D 701
Patent
active
061192813
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to the area of dosing fluids from a reservoir.
DESCRIPTION OF THE RELATED ART
In many applications employing dosing operations quantities of fluids must very frequently be injected in accordance with a predefined function of the variation in the level of the liquid contained in a reservoir. The quantities injected must very often be proportional to the variation in the level or in the volume of liquid in the reservoir, said function then being linear relative to the volume or to the flowrate.
These operations generally necessitate the use of complex equipment, for example a system made up of a level sensor, a dosing pump and a regulator. This type of equipment is often costly, includes mechanical parts and sealing parts likely to deteriorate with time and can give rise to problems in use in aggressive or explosive environments or environments to which access is controlled.
On the other hand, if the above function can be assured without moving mechanical parts, without seals and without electronic systems, using materials suitable to the fluids to be conveyed, very high reliability can be achieved for low investment and operating costs. Dosing techniques can also be used in consumer equipment without increasing the cost of manufacture.
SUMMARY OF THE INVENTION
The present invention concerns a method of dosing a fluid initially contained in a reservoir R1, said dosing being assured by the use of variations in the level of a liquid contained in a reservoir R2, said variation in level enabling transfer of controlled quantities of fluids from one reservoir to the other and in the pipes connecting the two reservoirs.
The above aim is achieved, in accordance with the invention, by a device for delivering a calibrated volume of a first liquid in relation to the filling or the draining of a main container with a second liquid, characterized in that it comprises: for controlling filling and draining cycles of said second liquid, lower end and a top end, said lower end of the calibration member being connected to said main container to allow said first or second liquid to enter said calibration member from a height related to the height of the second liquid in said main container when filling said main container and means for controlling the exit of a volume of said first liquid out of said auxiliary container substantially equal to the volume of the first or the second liquid that has entered said calibration member during a phase of draining said main container.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the present invention will become more clearly apparent after reading the following description of the principles and various embodiments of the invention given by way of non-limiting example. The description refers to the accompanying drawings, in which:
FIG. 1 illustrates one embodiment of the invention in which a controlled quantity of liquid is extracted from the reservoir R1 as a result of draining the reservoir R2.
FIG. 2 illustrates another embodiment of the equipment in which the fluid extracted from the reservoir R1 is introduced practically without delay into the reservoir R2.
FIG. 3 shows an embodiment of the equipment in which the fluid from the reservoir R2 is introduced into the reservoir R1 due to an increase in the level in the reservoir R2 and mixes with the fluid initially contained in R1, a controlled flowrate of said mixture then being extracted from R1 when R2 is drained by draining a pipe open at its top.
FIG. 4 illustrates another embodiment of the previous function in which the flowrate is controlled in a closed pipe forming a reservoir.
FIG. 5 represents a variation of the FIG. 4 solution.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 shows a system for extracting a volume v from a reservoir R1 when the reservoir R2 is being drained. It shows the reservoir R1 (201) containing the product to be dispensed 203 and the receiving reservoir R2 (202) containing the liquid 204. The reservoir R1 has two
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Lecoffre Yves
Tournassat Claude
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