Abstract The invention relates to an electrically controlled mixer faucet for cold and hot water, in which the control member determining the mixing ratio is moved by an electric motor (7). The purpose is to achieve temperature control which is for the user more convenient than earlier, and an initial temperature which is independent of the previous user. The control of the motor (7) is dependent on a target detected between a source of light (19) and a photocell (20) by the photocell (20). If the photocell (20) does not detect a user, the motor control circuit (13) receives its reference value from a circuit (18) the signal given by which has been set in advance. It is possible to produce by means of a suitable delay circuit (22) a certain delay before this signal is switched on. If there is a user in the detection field of the photocell (20), the control circuit (13) receives its control signal via the press-buttons (14, 15) used by the user and via corresponding circuit means (16, 17) which form control signals. The control circuit (13) receives a signal corresponding to the actual value of temperature via a temperature sensor (23) installed in the water mixing space.
An electrically controlled cold and hot water mixer faucet, in which the control member (2) determining the mixing ratio is moved by an electric motor (7), characterized in that the control of the motor (7) is arranged to depend on the output signal of a photocell (20) or the like, in such a manner that, when the photocell (20) does not detect any movement or any target in its detection field, the motor (7) adjusts into the position corresponding to the preselected temperature of the mixed flow.
Claim 2
Dependent Claim
87 words
An electrically controlled cold and hot water mixer faucet, in which the control member (2) determining the mixing ratio is moved by an electric motor (7), characterized in that the control of the motor (7) is arranged to depend on the output signal of a photocell (20) or the like, in such a manner that, when the photocell (20) does not detect any movement or any target in its detection field, the motor (7) adjusts into the position corresponding to the preselected temperature of the mixed flow.
Claim 3
Dependent Claim
57 words
A mixer faucet according to Claim 1, characterized in that between the photocell (20) and the control circuit (13) of the motor (7) there is installed a delay means (22) in such a manner that the adjusting of the motor into the preselected position takes place with a certain delay after the detection by the photocell (20).
Claim 4
Dependent Claim
46 words
A mixer faucet according to Claim 2, characterized in that the delay means (22) controls a switch (S) via which alternatively an electric reference quantity, capable of being set, or an electric quantity adjusted manually by the user is fed to the motor control circuit (13).
Claim 5
Dependent Claim
15 words
A mixer faucet according to Claim 3, characterized in that the electric quantities are voltages.
Claim 6
Dependent Claim
44 words
A mixer faucet according to Claim 3 or 4, characterized in that, for the purpose of adjustment by the user, the faucet is equipped with press-buttons (14, 15) by means of which the temperature is adjusted in either direction from the selected initial temperature.
Claim 7
Dependent Claim
21 words
A mixer faucet according to any of the above claims, characterized in that the selected initial temperature is approximately 38 °.
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