Baths – closets – sinks – and spittoons – Dry closets
Patent
1992-05-19
1994-03-01
Recla, Henry J.
Baths, closets, sinks, and spittoons
Dry closets
4479, 4DIG12, 4DIG19, A47K 1102
Patent
active
052895955
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to the general technical field of devices for drainage and transformation of human excreta and urine. The invention relates more particularly to devices of the aforesaid type working in dry conditions, namely those which are not intended to be coupled or connected to a general disposal system using a generally aqueous carrying fluid or liquid.
In industrially developed countries, it is normal to use water as evacuation means and optionally as a draining medium in drainage techniques. However, in certain cases, there is no water system available, which makes this technique impossible to use. In addition, even if the connection with a water drainage system is technically possible, the disposal of human wastes may prove to be an important source of pollution, when the ground has a very low purifying power or simply when it remains frozen for a very large part of the year. In such cases, it is then necessary to call on other drainage techniques, such as for example techniques of chemical stabilization, electrical drying or static composting.
The present invention comes under the category of composting toilets ensuring a composting of the human faeces, without the addition of any drainage fluid, thereby permitting to overcome the absence of any possibility of connection of the system with a general water drainage system.
PRIOR ART
Recently, and besides the solutions of electrical combustion or chemical degradation, attempts have been made to improve the decomposition of excreta by speeding up and controlling aerobic digestion. Various types of composting toilets have thus been proposed and for example, patent GB-A-1 580 659 describes a device comprising a toilet seat combined with a composting compartment and a reserve of water. The device also comprises a system of pipes and subsidiary pumping compartments connecting the composting tank proper, which is equipped with frother means, with one or more additional compartments for receiving the dejections. The design of such a device results in a unit of large overall dimensions, due to the succession of tanks, and which requires the presence of an additional tank of water. Moreover, the internal arrangement of this device is such that there are, along the containers and the pipes, a large number of zones and surfaces which the evacuation liquid cannot reach, this resulting, on the one hand, in a heterogeneity of the aerobic digestion, and on the other hand, in the release of unpleasant smells. Such a device also requires the presence of a subsidiary water tank, needing constant filling up and maintenance. It should also be noted that in certain regions, and in particular in regions where water is scarce or difficult to reach, the necessity to use a evacuation fluid represents a great disadvantage. Finally, the use of a static composting tank, merely equipped with frother means, improves to a certain extent the composting speed which, nonetheless, remains relatively slow.
A biological toilet is also known from PCT application 81-03 487, which toilet is equipped with a toilet seat placed over a composting container provided with stirring means constituted of an endless screw. The toilet is completed with a humidifying unit which includes a reservoir of water and with heating elements designed to increase the temperature inside the composting container. Such a device presents various disadvantages and, in particular, it is rather unsightly insofar as the seat is disposed just above the receiving container which acts as composting container. Moreover, despite the presence of a microprocessor whose function is to control stirring, moistening and heating, the aerobic digestion takes a relatively long time because of the absence of separation between the solid and liquid phases, which inevitably causes the release of smells. Similarly to the device described in the preceding paragraph, such a device also requires the presence of a subsidiary reservoir of liquid.
Finally, a biological toilet is described in Canadian Patent
REFERENCES:
patent: 3054663 (1962-09-01), Komline
patent: 3923605 (1975-12-01), Gedde
patent: 4223094 (1980-09-01), Vaseen
patent: 4364130 (1982-12-01), Persson
patent: 4633535 (1987-01-01), Louvo
Centre d'Experimentation et de Documentation sur les Energies
Eloshway Charles R.
Recla Henry J.
LandOfFree
Dry-operated rotary composting toilet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dry-operated rotary composting toilet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry-operated rotary composting toilet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-568999