CS210356B1 - Central Heating Temperature Control Circuit - Google Patents

Abstract

The stated purpose is achieved by an electrical circuit in which the sensor of the central heating control valve /1/ is connected to the room thermostats /4/, located in the monitored areas of the building. The connection of the thermostats is changed from series to parallel by means of parallel-connected diodes /5/ and by changing the polarity of the circuit with a polarity switch /3/. The circuit thus ensures increased heating until the temperature in all monitored areas reaches the desired value. Then the heating is continued until the temperature in all monitored areas drops below the desired value. In addition to the above circuit connection, there are other possible variants.

Description

1 210356

BACKGROUND OF THE INVENTION The present invention relates to a circuit for regulating the temperature of a central heating system with a view to saving energy, acquisition and operating costs, as well as improving the temperature conditions under weather conditions.

The known effective methods of regulating the central heating temperature are based on the individual regulation of the heat transfer fluid flow through a given heater depending on the temperature of the medium provided by the heat-sensitive control valves installed on the supply pipe of the heater. The advantage of this system is the possibility of individual choice and maintenance of temperature in that space. The disadvantage is the large number of regulators and the resulting high investment and operating costs.

Another progressive method is to regulate the heat output of the central heating medium by means of an equilibrium regulator depending on the temperature of the free atmosphere and the return heat carrier medium. The advantage is a simple control circuit in response to a change in the overall climatic conditions, the disadvantage is the insensitivity to changes in the body in individual spaces of the sunlight, wind, spatial arrangement, etc., which causes a large dispersion of heat conditions and loss of thermal energy. in a variable weather period.

The above mentioned drawbacks are eliminated by the connection of the electric circuit according to the invention, which, according to the invention, is a central heating temperature control circuit consisting of a central heating control switch which is connected via a polarity switch to a series connected room thermostat to which the diodes are connected in pairs.

The object of the present invention is that the thermostats are only installed in the characteristic spaces of the smoking objects, so that the number of thermostats and thus the financial costs is reduced compared to the system of individual thermostats of the heaters. Further, there is an advance in saving energy and providing the desired temperature, taking into account variable temperature conditions in the characteristic as well as extremal areas of the smoking object as compared to conventional equiterral regulation.

In the accompanying drawings, examples of circuit connections according to the invention are shown, wherein FIG. 1 is a circuit diagram of a central heating temperature control circuit with five-room temperature monitoring. Fig. 2 shows the connection of thermostats and diodes by discharging the thermostat function by the diode to switch on the heating. FIG. 3 illustrates a particular connection of a heating medium flow control circuit while monitoring the temperature of three spaces.

The circuit according to FIG. 1 is formed by a switch (1) of a regulating fitting which is connected via a switch of polarity (3) to a thermostat (6) with parallel diodes (5).

The switch 1 is simultaneously connected to the actuator of the regulating fitting 2, or a central heating pump. The diodes 5 determine the serial or parallel connection of the thermostats depending on the polarity of the voltage behind the polarity switch 3_. These thermostats switch their contacts when the temperature drops below the set level. In the plotted state, the regulating fitting 8 is in the restricted heating position, the fumed spaces cool and the polarity of the voltage beyond the polarity switch 3 determines the series wiring of the thermostats 4. After all the monitored areas have cooled down below the set level, the control circuit of the switch 6 is closed via the polarity switch 3 and the thermostats 4. and the switch 1 switches on the control valve servomotor 2, which is moved to the elevated heating position. At the same time, the polarity changeover switch 2 of the thermostat circuit polarity 5 and these are connected in parallel.

Increased heating remains on until the temperature in all monitored areas has risen above the set level. Thereby, all thermostats 4 are disengaged so that the control circuit of the switch is disengaged, which moves the fitting 2 to the restricted heating position, the polarity switch 3 changes the polarity, and the cooling spaces in the range of hysteresis and thermal inertia of the fumigant system are carefully cooled.

Claims (2)

Fig. 210356 2 The bandages according to Fig. 2 consist of spatial thermostats with diodes 5 as in Fig. 1 and of an individual parallel diode 6. This diode allows the function according to Fig. 1 to be modified so that in spaces with pronounced variable external thermal influences, e.g. buildings alternately sunlit and cooled by freezing east winds> are installed thermostats 4 with individual parallel diodes 6 which disable the respective thermostats 4z of the function when the heating is switched on. Heating on the sunny days is then controlled by the cooler areas of the far side of the object, and in the cold east winds, the heating is controlled to the full extent by the wind temperature. The connection also allows reduced heating, for example, outside the working hours by connecting the switch to the thermostat set to a low temperature, as well as other function variants depending on the reversal of the monitored areas, limiting their function, setting the desired temperature and heating elements at the given insulation state of the premises. The necessary control elements can also be installed additionally while fully retaining the usual function of the flue gas system with the existing control systems. The modification is based on the example in Fig. 3 in the addition of a conventional central heating electrical circuit consisting of room thermostats V2, V3, V4 with diodes D1, D2, rectifier block 31, b6 and contactor S1. with switch V1 of control valve M1. As the switch 1, the contactor S1 is used, whose auxiliary contacts 2 S1, 3 S1, 4 S1 and 5 S1 form the polarity switch 3 .. In particular, the contacts S1 of the contactor S1 control the servomotor of the central heating control valve M1. Increased heating can be permanently switched on by the V1 switch. SUBJECT OF THE INVENTION A central heating temperature control circuit, characterized in that the switch (1), which is connected to the control valve (2) of the central heating, is connected via a polarity switch (3) to a series-connected room thermostat (4) to which they are paired parallel connected diodes (5). 2. Circuit according to claim 1, characterized in that parallel diodes (6) are connected to the selected thermostats (4). 1 sheet of drawings Severografia, n. P., Plant 7, Most