Baths – closets – sinks – and spittoons – Dry closets – With heating meas
Patent
1999-01-21
2000-04-25
Douglas, Steven O.
Baths, closets, sinks, and spittoons
Dry closets
With heating meas
41113, 41111, A47K 1102
Patent
active
060528362
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an electric toilet comprising a cabinet or housing, an opening in the cabinet's top side, a lid assigned to the opening, a bowl arranged inside the opening, which bowl is openable downwards, a combustion chamber arranged under the upper bowl and provided with an opening directed upwards, arranged to which opening is a lid, heating coils arranged in the combustion chamber and an evacuation device connected to the combustion chamber.
BACKGROUND TO THE INVENTION
The most common form of toilets without a doubt are water toilets. For reasons which are self-evident, these cannot be used for certain application areas and in certain places, for example holiday cottages and boats. Other types of toilets have been developed for these, such as earth closets, freezer toilets and electric toilets, for example. Recently these types of toilets have also come into fashion on account of environmental aspects. Many places and urban districts do not permit water toilets to be connected up to the sewerage system on account of treatment plant capacity and groundwater resources. Of the alternative toilets, electric toilets offer the absolute minimum of waste products.
Electric toilets function so that they are arranged with a receptacle under a protective lid, into which receptacle a liquid-resistant paper bag is placed. When one has relieved oneself into this and "flushes", i.e. activates the device by stepping on a pedal for example, the receptacle is opened and the waste drops down into a combustion chamber placed under the receptacle. When the pedal is then released, the receptacle and a lid for the combustion chamber are closed. Heating coils are then activated in the combustion chamber, which burns the waste. An evacuation facility from the combustion chamber arranged with a fan sucks out the combustion gases and routes them out into a ventilation pipe. Following combustion, only a little ash remains in the bottom of the combustion chamber.
The electric toilets which are on the market have a number of disadvantages. Due to the fact that the combustion chamber is designed as a vertical cylinder and the electric coils are arranged in the top edge of the cylinder up by the lid, the coils do not provide uniform radiant heat in the bottom of the combustion chamber, but "pockets" are obtained with poorer heat, especially around the edges between the bottom and the side. Other disadvantages are that the top part of the bag has a tendency to get caught between the lid and the edge of the combustion chamber, in which case the bag does not collapse when it drops down but stands up. This also applies if the foot slips off the pedal during "flushing". If combustion is then commenced, the combustion chamber is not closed, but flames may emerge between the lid and the opening.
Another serious disadvantage is the design of the evacuation device. If the power for the electric toilet is lost while combustion is in progress, the power for the suction fan is also lost. This means that the flue gases from the hot feces are no longer sucked out but end up in the space where the toilet is located, with a powerful stench as a result. Furthermore, a nasty-smelling coating is obtained on the fan, especially when this is arranged in the path of the flue gases.
From the safety aspect, the electric toilets on the market are not optimun, as they permit flushing to occur when the protective lid is raised. This causes children for example possibly to get the idea into their head of stepping on the pedal with the protective lid open, in the event of which the receptacle and the combustion chamber are opened, with a major risk of burns. In addition, these electric toilets are disposed with a spring system for suspension of the upper and lower part of the combustion chamber, which springs lose their elasticity with time on account of the heat and even break, which on the one hand causes a gap between the parts of the combustion chamber and on the other means that the toilet cannot be used.
A further dis
REFERENCES:
patent: 3227114 (1966-01-01), Anderson
patent: 3436765 (1969-04-01), Sundberg
patent: 3816857 (1974-06-01), West, Jr.
patent: 4425671 (1984-01-01), Nelken
patent: 5337422 (1994-08-01), Blankenship
patent: 5357880 (1994-10-01), Kishi
Douglas Steven O.
Nguyen Tuan
Sirus Technology AS
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