DE3524016A1 - Hot-water accumulator with indirect heating - Google Patents

Abstract

Hot-water accumulator, which can be heated by a boiler, with a water accumulator, into which two thermostats arranged at different heights project with their sensors, the thermostat lying on the lower level lying with its contact in series with the contact of a time switch and the thermostat lying on the higher level bridging with its contact the two contacts just mentioned and this parallel connection causing the boiler to charge the accumulator.

Description

The invention relates to a hot water tank with indirect heating by a in the lower part of the storage space arranged heat exchanger and a time switch which controls its heating and limits a heating period Circuit includes a thermostat that controls the shutdown of the heating.

In such hot water storage tanks, the j disadvantage occurs, as is known, that when hot water is withdrawn in one the

The capacity of the storage tank exceeded only: cold water until the beginning of the next heating period : is available.

. The object of the invention is to remedy this disadvantage,

; namely, it is provided according to the invention that the time = Timer associated thermostat is arranged in a lower level of the storage space than a second, in the upper one Part of the storage space arranged thermostat, which is independent of the timer, the heating controlling second circuit is located.

Storage tanks with two temperature sensors arranged one above the other are known, but this is the one The problem underlying the present invention and its solution are alien. It is crucial for this invention that

. · That the second, higher thermostat is used = with its second circuit required = if - namely in the event of exceeding the normal

^; Draw-off amount - to replace the first circuit containing the timer and to bypass the timer.

The circuit of the hot water storage tank according to the invention is illustrated in the single drawing figure.

Specifically, 1 denotes a boiler, which is basically any energy source hot water and its heat is generated via a heat exchanger, e.g. a coil 2, which is located in a storage tank 3 gives off water to be heated.

The operation of the boiler 1 is controlled, if necessary at the same time as the power supply, on the mains voltage leading lines 4 and 5, of which the phase 5 via the branch line 6 with the Connection part 7 of the boiler 1 is directly connected.

The other phase 5 has two separate branch lines with two different power networks tied together:

The branch line 8 leads over the thermostat 10 arranged in the lower part of the memory 3 and over the timer 11 to the connection part of the boiler 1.

The branch line 9, on the other hand, leads via the thermostat 12 (without Interposition of a timer) directly to the connection part 7 of the boiler 1.

The mode of operation of the hot water storage tank results from it as follows:

When the capacity of the memory 3 does not exceed the hot water withdrawal, the activity of the

Boiler 1 controlled solely by the lower thermostat 10, which is already after the start of the heating period when falling below an adjustable minimum temperature in the lower part of the containing the cooler water Storage tank 3 switches the boiler on via circuit 8 + 9 and switches it off when the target temperature is reached.

If, however, hot water is added to a die after the heating-up period has elapsed or during this period Capacity of the memory 3 taken excessive extent, so <3aß the stored water in the upper part of the Memory 3 reduces its temperature so far that the thermostat 12 located there responds, then becomes independent from the timer 11 - activated early via the circuit 9 of the boiler 1, so that even then hot water can be made available.

Under the thermostat there is both a complete controller with expansion sensor, setpoint generator and comparator and electrical switch as well as a sensor of a continuous controller.

Claims (1)

Joh. Valilant GmbH u. Co Claim: Hot water storage tank with indirect heating using a heater located in the lower part of the storage space =. exchanger and a »one that controls its heating Time switch which limits the heating-up period and whose circuit enables the heating to be switched off contains controlling thermostats, characterized in that that this thermostat (10) assigned to the timer (11) is in a lower level of the storage space (3) is arranged as a second, in the upper part of the storage space (3) arranged thermostat (12), the in a second circuit (9) that is independent of the timer (11) and controls the heating is located.