DE3701832C2 - - Google Patents

Description

The invention relates to a hot water supply system with several tapping points connected to one Water heaters, especially instantaneous water heaters, are connected, the target temperature at one Temperature controller is adjustable, with several Tap points setpoint are arranged, the Control the temperature controller remotely.

Such a system is in EP 00 38 964 described. The setpoints are only intended to a temperature between about 45 ° C and about 60 ° C to select. In addition to a tap, another Open the tap, then this turns on Temperature of the first mentioned tap without its own Choice of one or both taps is created a mixing temperature. Both are undesirable.

The object of the invention is a Hot water supply system of the type mentioned to propose at which defined in the tap operation Operating conditions exist.

According to the invention, the above task is for a Hot water supply system of the type mentioned solved in that the setpoint of the tap Have switch and are coupled together and that the actuated switch is one of the Taps at the other taps an optical or Acoustic display triggers and / or the setpoint device this tap blocks.  

In the simplest case, pressing the Switch on one of the taps at the other A display triggered. The user recognizes from the fact that one of the other taps already is switched on and a temperature selection is made there is.

In another case, when the Switch on one of the tapping points the setpoint generator of the other taps blocked. Then there is none Temperature selection possible. Then only water can be used with the at the tap that was switched on first Temperature can be taken.

In a third case, the two measures mentioned combined.

In one embodiment of the invention, an additional step is carried out to lock the setpoint device, a locking of the Water dispensing valves at the relevant dispensing points. The User can then when a first tap is switched on, not only at another tap make no temperature selection, but also none Remove hot water.

In a further embodiment of the invention, the each activated switch of one of the taps Water dispensing valves of those other tapping points their setpoints a lower temperature is set as on the setpoint generator Tap. It is achieved in that after the Switch on a first tap all those Tap points can also be switched on who want an equal or higher temperature. Those taps at a higher temperature is then set only with hot water supplied at a lower temperature. However, it is  avoided that a tap, such as a Shower, can be turned on at a lower Temperature than at the tap set first is desired. So there is no danger of a Scalding in the shower.

In one embodiment of the invention is a priority circuit provided that when tapping on a priority The tapping point for subordinate tapping points switches ineffective or blocks the water dispensing valves. It is achieved in that a priority tap, for example, the tap for showering, always can be switched on immediately with the desired temperature even if there are other taps by then are switched on. The temperature of the subordinate The tap then depends on the temperature of the priority tap, or it will be the subordinate Tap is forcibly switched off.

Embodiments of the invention are in of the following Description explained in more detail. In the drawing shows

Fig. 1 is a block diagram of a hot water supply system and

Fig. 2 is a circuit diagram of a hot water supply system.

A hot water supply system has four taps ( 1 , 2 , 3 , 4 ). Their water tap valves ( 5 ) are connected to a water heater ( 7 ) via a hot water pipe ( 6 ). The instantaneous water heater ( 7 ) is provided with a temperature controller ( 8 ). Use this to set the water temperature of the instantaneous water heater.

At each tap ( 1 , 2 , 3 , 4 ) there is a setpoint device ( 9 ) with a switch ( 10 ) and an indicator lamp ( 11 ). The setpoint generator ( 9 ), the switch ( 10 ) and the indicator lamp ( 11 ) are connected to a central control device ( 12 ) to which the water tap valves ( 5 ) designed as solenoid valves are also connected.

The control device ( 12 ) is designed so that when the switch ( 10 ) of one of the tapping points ( 1 , 2 , 3 , 4 ) is actuated, it controls the indicator lamps ( 11 ) of the other tapping points and the solenoid valves ( 5 ) other taps. The temperature of the instantaneous water heater ( 7 ) is now determined by the setting of the setpoint generator ( 9 ) assigned to the actuated switch ( 10 ).

The tap ( 1 ) is, for example, a shower. The control device ( 12 ) has a priority circuit which immediately interrupts another tap ( 2 , 3 , 4 ) that is switched on when the switch ( 10 ) of the shower tap ( 1 ) is actuated. It is thereby achieved that shower operation is always possible immediately, regardless of other taps. Accordingly, the tap ( 2 ) to the tap ( 3 , 4 ) with priority and the tap ( 3 ) to the tap ( 4 ) can be switched.

The control device ( 12 ) has a safety circuit. This prevents the instantaneous water heater from supplying water at a temperature higher than 40 ° C when the shower tap ( 1 ) is switched on. In addition, the safety circuit resets the temperature controller ( 8 ) after each tapping process has ended. This reset also takes place when the shower tap ( 1 ) is switched on and a temperature that is too high for shower operation is set beforehand, for example via a kitchen tap.

The control described can be constructed with known electronic or electromechanical components. The setpoint generator ( 9 ) can be a potentiometer or work digitally.

In the embodiment of Fig. 2, the set value transmitter (9), each tap (1, 2, 3) formed by a potentiometer. A light indicator ( 13 ) is also provided at each tap.

Each tap is assigned a relay in the control device ( 12 ), the winding (W1, W2 or W3) of which is connected downstream of the relevant switch ( 10 ).

The winding (W1) controls one contact (K11), one Double contact (K12) and one contact (K13). The Winding (W2) controls one contact (K22) and one Contact (K23). The winding (W3) controls a contact (K33) and a contact (K32).

The contact (K11) is in series for tapping the potentiometer ( 9 ) of the tap ( 1 ). One contact (K12) and the contacts (K22, K32) are in series for tapping the potentiometer ( 9 ) of the tap ( 2 ), the other contact (K12) being in front of the switch ( 10 ). The contacts (K13, K23) are in front of the switch ( 10 ) and the potentiometer ( 9 ) of the tap ( 3 ). The contact (K33) is in front of the potentiometer ( 9 ) of the tap ( 3 ).

The tap ( 1 ) has priority over the tap ( 2 , 3 ). The taps ( 2 , 3 ) are subordinate.

The taps of the potentiometers ( 9 ) are connected in parallel via the switching contacts mentioned to an amplifier ( 14 ) which is connected to the negative potential and is connected to the temperature controller ( 8 ). Between the plus potential and the minus potential are the switch ( 10 ) and the connections of the potentiometer ( 9 ) via the switch contacts mentioned.

If the switch ( 10 ) of the tap ( 1 ) is closed, the light indicator ( 13 ) lights up, the contact (K11) closes and the contacts (K12, K13) open. The temperature of the instantaneous water heater ( 7 ) is now determined solely by adjusting the potentiometer ( 9 ) of the tap ( 1 ). As long as this tap is in operation, the other taps are blocked. When the switch ( 10 ) is pressed, the temperature setting does not change. When the switch ( 10 ) on the tap ( 2 ) is actuated, the contact (K23) opens and the contact (K22) closes. However, this remains ineffective since the contacts (K12, K13) are open anyway. When the switch ( 10 ) of the tap ( 3 ) is actuated, the contacts (K32) open and the contact (K33) closes; this also has no effect, since the contacts (K13, K12) are open anyway.

If the switch ( 10 ) of the tap ( 2 ) is actuated with the switch ( 10 ) of the tap ( 1 ) open, the contact (K22) closes and the contact (K23) opens. Since the contacts (K12, K32) are also closed, the temperature is now determined by the setting of the setpoint device ( 9 ) of the tap ( 2 ). This is not interrupted by pressing the switch ( 10 ) on the tap ( 3 ), since the contact (K23) is open.

If the switch ( 10 ) of the tap ( 3 ) is closed when the tapping points ( 1 , 2 ) are not actuated, the contact (K33) closes and the contact (K32) opens. The hot water temperature is now determined by the setting of the setpoint device ( 9 ) of the tap ( 3 ). Pressing the switch ( 10 ) on the tap ( 2 ) does not interrupt this because the contact (K32) is open.

If the primary tap ( 1 ) is switched on when the tap ( 2 or 3 ) is switched on, the contacts (K13, K12) open so that the tap ( 2 or 3 ) switches off.

Claims (4)

1.Warm water supply system with a plurality of taps, which are connected to a water heater, in particular a continuous-flow heater, the setpoint temperature of which can be set at a temperature controller, with setpoint transmitters which control the temperature controller remotely being arranged at a plurality of taps, characterized in that the setpoint transmitter ( 9 ) of the taps ( 1 , 2 , 3 , 4 ) have on-switches ( 10 ) and are coupled to one another and that the respectively actuated on-switch ( 10 ) triggers one of the tapping points at the other tapping points to an optical or acoustic display ( 11 ) and / or the setpoint devices ( 9 ) this tap is blocked. 2. Hot water supply system according to claim 1, characterized in that in addition to locking a locking of the water tap valves ( 5 ) of the relevant tap points ( 1 , 2 , 3 , 4 ). 3. Hot water supply system according to one of the preceding claims, characterized in that the respectively actuated switch ( 10 ) one of the tapping points ( 1 , 2 , 3 , 4 ) blocks the water dispensing valves ( 5 ) of those other tapping points, at their setpoint sensors ( 9 ) a lower one Temperature is set as at the setpoint device ( 9 ) of this tap. 4. Hot water supply system according to one of the preceding claims, characterized in that a priority circuit is provided which, when tapping at a priority tap ( 1 ) at subordinate taps ( 2 , 3 , 4 ), switches the setpoint generator ( 9 ) ineffective or the water tap valves ( 5 ) locks.