Toilet bowl flushing device
First Claim
1. A toilet bowl flushing system, comprising:
- (a) an electromagnetic valve means including means for discharging a low flow-rate of flushing water to said bowl and means for discharging a high flow-rate of flushing water to the bowl;
(b) means for detecting approach and departure of users of said bowl, said detecting means generating an ON signal indicative of said approach and initiation of use of said bowl by a first user, a first OFF signal indicative of said departure and termination of use of said bowl by said first user, a second OFF signal indicative of approach of a second user immediately after departure of said first user, and a third OFF signal indicative of departure of said second user; and
(c) means for controlling operation of said valve means, including(1) first means responsive to said ON signal from said detecting means for energizing said high flow-rate water discharging means for a relatively short first period of time upon said initiation of use by said first user;
(2) second means for energizing said low flow-rate discharging means in response to said ON signal and said high flow-rate water discharging means in response to said first OFF signal, said high flow-rate discharging means being energized for a second period of time longer than said first period of time, and said low flow-rate discharging means being deenergized a predetermined period after deenergization of said high flow-rate discharging means;
(3) third means responsive to said second OFF signal occurring during said second period of time for deenergizing said high flow-rate discharging means, thereby to interrupt the high flow in said bowl during use by said second user; and
(4) fourth means responsive to said third OFF signal for reenergizing said high flow-rate water discharging means for said second period of time following departure of said second user.
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Accused Products
Abstract
A toilet bowl flushing device capable of discharging automatically a large amount of flushing water to the bowl immediately after termination of use of the bowl and a small amount of water continuously from the beginning of the use until a predetermined time has elapsed after the large amount discharge. Valve means for controlling the amount of water provided to the bowl includes a small-amount water discharging means and a large-amount water discharging means, and is coupled to a control means including a timer means suitably energizing the small-amount and large-amount water discharging means so that an auxiliary bowl flushing is performed with a small amount of flushing water to prevent sticking of filth to the bowl during the use, a main bowl flushing is realized with a large amount of flushing water immediately after the use, and a small amount of flushing water is kept discharged still after the main flushing to avoid any generation of water hammering phenomenon.
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Citations
3 Claims
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1. A toilet bowl flushing system, comprising:
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(a) an electromagnetic valve means including means for discharging a low flow-rate of flushing water to said bowl and means for discharging a high flow-rate of flushing water to the bowl; (b) means for detecting approach and departure of users of said bowl, said detecting means generating an ON signal indicative of said approach and initiation of use of said bowl by a first user, a first OFF signal indicative of said departure and termination of use of said bowl by said first user, a second OFF signal indicative of approach of a second user immediately after departure of said first user, and a third OFF signal indicative of departure of said second user; and (c) means for controlling operation of said valve means, including (1) first means responsive to said ON signal from said detecting means for energizing said high flow-rate water discharging means for a relatively short first period of time upon said initiation of use by said first user; (2) second means for energizing said low flow-rate discharging means in response to said ON signal and said high flow-rate water discharging means in response to said first OFF signal, said high flow-rate discharging means being energized for a second period of time longer than said first period of time, and said low flow-rate discharging means being deenergized a predetermined period after deenergization of said high flow-rate discharging means; (3) third means responsive to said second OFF signal occurring during said second period of time for deenergizing said high flow-rate discharging means, thereby to interrupt the high flow in said bowl during use by said second user; and (4) fourth means responsive to said third OFF signal for reenergizing said high flow-rate water discharging means for said second period of time following departure of said second user. - View Dependent Claims (2)
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3. A toilet bowl flushing system, comprising:
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(a) an electromagnetic valve means including means for discharging a low flow-rate of flushing water to said bowl and means for discharging a high flow-rate of flushing water to the bowl; (b) means for detecting approach and departure of users of said bowl, said detecting means generating an ON signal indicative of said approach and initiation of use of said bowl by a first user, a first OFF signal indicative of said departure and termination of use of said bowl by said first user, a second OFF signal indicative of approach of a second user immediately after departure of said first user, and a third OFF signal indicative of departure of said second user; and (c) means for controlling operation of said valve means, including (1) first means responsive to said ON signal from said detecting means for energizing said high flow-rate water discharging means for a relatively short first period of time upon said initiation of use by said first user; and (2) second means for energizing said low flow-rate discharging means in response to said ON signal and said high flow-rate water discharging means in response to said first OFF signal, said high flow-rate discharging means being energized for a second period of time longer than said first period of time, and said low flow-rate discharging means being deenergized a predetermined period after deenergization of said high flow-rate discharging means.
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Specification