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EP0387471A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

An electrically controlled cold and hot water mixer faucet

Assignee: Oras Oy
•
Filing: 1989-08-02
•
Granted: —
•
Expires: 2009-08-02
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Abstract

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.

Inventors

  • 👤 Pekka Waldemar Nilsson
  • 👤 Ari Esa Juhani Määttänen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 01:02
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/05; E03C1/055; E03C1/057; G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1393

Claims Analysis

Total Claims: 7
Claim 1
Independent 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 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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