DE2000674A1 - Regulator apparatus - Google Patents

Description

patent war »

DIpI. Ing.C. Wallach

DIpI. Ing.G- Koch

Dr. T. Heibach

8 Munich 2
IUufinflerstr. 8, TeL 240275 " 1 JAM 1970

12440 - H / We

SATCHWELL CONTROLS LIMITED, Slough, Buckinghamshire / England

Regulator apparatus

The invention relates to a control apparatus for a control system in which a physical parameter of an object or medium is controlled by controlling a physical parameter of an influencing object or medium as a function of a physical parameter of a second object or medium for central heating control systems in which the temperature of a heating element, for example for radiators in a room or another closed room, is changed depending on the ambient temperature outside the room or other room in such a way that the room or the ; other room is kept essentially at a desired temperature regardless of the fluctuations in the ambient temperature outside the room or ruffians.

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Control temperatures for central heating systems, by means of which the temperature of a room or other closed space is to be controlled, have been known and in use for many years. Such systems have at least one detector arranged outside the room or other room for monitoring the temperature outside the room. Such systems also have a detector that responds to the temperature of the heating current mean in atm system. The by this detector · !! ι generated signals are fed to a controller whose 'output variable is the adjustment of an actuator. actuated fluid mixing valve controls so that y; the heating flow medium on the outlet side of the valve for a certain given temperature outside the! Room or other space is kept at an essentially icon »constant temperature. Conversely, if the temperature outside of the room or other space changes, the controller will cause the heating fluid temperature to change. The known systems have the disadvantage that they comprise at least four separate components, namely detectors, a Helza fluid tea temperature detector, a regulator and a mixing valve operated by an actuator; these individual parts are arranged at a distance from one another and must be electrically connected to one another. In order to keep the overall costs of the system as low as possible, it is desirable to reduce the number of such separately arranged parts to a minimum.

The object of the present invention is to create a control apparatus of the type mentioned at the outset, in which the number of components to be spatially separated from one another, but electrically connected to one another, is largely reduced and in this way a structure that can be set as compact, simple and as low as possible Apparatus is achieved.

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For this purpose it is provided according to the invention that the apparatus is a device in a single unit for changing the physical parameter of the influencing object or medium and a device for direct or indirect monitoring of the physical parameter of the influencing object or medium.

According to a preferred embodiment of the invention Regulator apparatus is provided so that it can be used in a single Aggregate together bit the mentioned devices a controller assembled to control the change in the physical parameter of the influencing object or medium contains.

According to a further advantageous embodiment of the regulator apparatus according to the invention, it is provided that it is removed from the assembled unit arranged at least one device for monitoring the physical parameters of the having second object or medium.

The invention allows, for example when applied to a central heating system of the type mentioned at the outset, the combination of the detector for the central heating temperature, the controller and the mixing valve with actuator to a single unit forming a structural unit.

In the following, an exemplary embodiment of the invention is based on the drawing described; in this show:

Flg. 1 is a block diagram of a control apparatus for a Central heating system;

2 in a partially broken away perspective view a fluid control valve assembly with a

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-4- 2Ö0067A "

Mixing valve, a controller and a device for detecting or monitoring the temperature of the Strc'ra'raungsmittel penetrating the mixing valve;

Pig · Z> an arrangement for monitoring the temperature of the flow medium passing through the mixing valve.

In the arrangement according to FIG. 1, a detector 1 is arranged outside a room to be regulated or other closed space; this detector 1 generates an output signal as a function of the ambient temperature. This output signal of the detector 1 is fed to a controller 2; the output variable of the controller 2 is fed to a mixing valve device J> and changes the respective position of the mixing valve arrangement 2 as required.

A change in the position of the mixing valve arrangement 3 causes a change in the temperature of the Heizströmungsralttels and thus a change in the amount of heat supplied to the room to be regulated or other closed space. The detector 4 generates a signal in accordance with the temperature of the heating fluid; this signal is fed to controller 2. A button 5 is provided as a device for manually adjusting the temperature of the Heizströmungemittels for a particular value of the monitored from the detector 1 ⁿ Au3en "temperature to the controller. 2 The normal operation and operation is that the HeIzströmungsmltteitemperatur for a given value the "outside" temperature is selected and set by means of the knob 5. The system then works in such a way that the mixing valve arrangement 3 exerts a control influence in such a way that the temperature of the heating fluid for a certain value of the "outside" temperature is kept essentially constant, for example if the outside temperature

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drops, a change in the signal supplied by the detector 1 causes the controller 2 to adjust the mixing valve arrangement 3, which increases the temperature of the Has heating fluid result. The adjustment of the mixing valve arrangement 3 in cooperation with the detectors 1 and 4 and controller 2 is such that the * additional heat supplied by the heating fluid to the controlled room or other enclosed space essentially the additional heat loss through the walls etc. caused by the drop in outside temperature compensated.

Fig. 2 shows a partially broken view of a regulator assembly from a indicated at 11 (not shown) regulator, an actuator-gear device 12, a temperature monitoring device 15 and a mixing valve arrangement 14. When assembling the overall arrangement it is provided that the Temperature changeover device 13 with the surface-machined stop piece 15 in the area 16 comes into thermal contact. The region 16 is preferably adjacent the flow outlet opening of the mixing _i ventila order 14 '

In practice it is advisable to use the mixing valve arrangement 14 ' to be installed in the pipeline and then the part of the control unit consisting of components 11, 12 and 13 in a manner similar to that described in British Patent Application No. 13 283/65, detachable with the mixing valve arrangement 14 to connect. The temperature monitoring device 13 therefore monitors the surface temperature of the stop 15 in the area l6. Any change in the temperature of the heating fluid causes a change in the upper living temperature of the stop 15 at point 2.6, such that «la corresponding signal can be transmitted to the controller provided at 11.

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Pig. 3 shows an embodiment of the temperature monitoring device ^, consisting of a housing 21, a Thermistor 18, a squeezable cushion 19 "in the example shown made of silicone rubber, a snap ring 22 and two electrical leads 20 to the Thermistor 18. In the operating state, i.e. as soon as the unit comprising the components 11, 12 and 13 can be detached with the • The flow valve arrangement 14 is connected, the thermistor 18 serving as a temperature sensor is pressed to extend the surface of the area 16 of the stop 15, and under the action of the pressure which the cushion 19 and the snap ring 22 in connection with the housing 21 .and the wall 17, which forms the outer surface of the actuator-gear unit 12, exercise.

It should be noted that the temperature monitoring device 13 could be designed in such a way that it can be integrated into a {Recess in the stop 13 or in a recess in {Any other part of the mixing valve assembly 14 fits ■ and accordingly directly or indirectly in contact with the mixing

valve assembly 14 could get. .

Furthermore, the temperature monitoring device 13 sum can be formed in direct or indirect surface contact with any exterior portion of the mixing valve assembly 14.

Particular importance is attached to direct or indirect contact between the temperature monitoring device 13 and the misoh valve assembly 14 as it is in practice is very easy, a - be it with air or another medium - filled gap between the parts 13 or 18 and to accomplish.

It should also be emphasized that, if necessary, the temperature

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BATH ORIGINAL

rator at more than one point on or in the mixing valve assembly 14jlberwaoht.

The temperature monitoring device 15 can be designed and arranged in such a way that it measures the temperature of the mixing valve arrangement 14 or the temperature of the surrounding air or both temperatures.

Furthermore, the temperature monitoring device could be a snug fit on or around any part of the mixing valve assembly 1Λ.

The regulator 11 is preferably of the integrally acting or I-type.

According to a modified from of embodiment f the regulator factors Rauintempei-aturdetek-of one or more "a signal, instead of or in addition. To the signal or signals, which respectively of dom or the ambient temperature outside the room or regulated Raumr, measuring detector or detectors is or are delivered, fed Furthermore, the mixing valve assembly can the _{Heißwasaerzuflutf;..} regulate to a radiator matrix through which is pressed with a total i bläee air in this case, a detector, the temperature in the air duct downstream of the signal supplied by this detector, of the blower monitoring. is supplied to the controller and serving as NIIT priority out stattetes control signal, such that the air temperature in the channel never falls below a predetermined value.

If more than one room temperature detector is used, a manually or automatically operated sequence switch is provided for switching from one detector to the next.

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, reder detector is in each case with the controller Ii via a

two-wire line connected.

According to a modified embodiment, the mixing valve arrangement 1Λ is directly connected to the control unit or riveted and not removably connected to it as described in British Patent Application No. 1} 283/65.

- patent claims -

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^BA0 O

Claims (1)

Claims 1. Control apparatus for a control system, in which a physical parameter of an object or medium by Control of a physical parameter of an influencing object or medium as a function of a physical parameter of a second object or medium is controlled, characterized in that the apparatus in a single Aggregate a device (5, Fig. 1; 14, Fig. 2) for changing the physical parameters of the influencing Object or medium and a device (4, Fig. Ij 13 * Fig. 2; 18, Fig. 3) for direct or indirect has monitoring of the physical parameter of the influencing object or medium. 2. Regulator apparatus according to claim 1, characterized in that it has a regulator for controlling the change in the physical parameter of the in a single unit together with the devices mentioned ! Containing the influencing object or medium assembled. s 3. Regulator apparatus according to claim 1 or 2, characterized in that it is arranged remotely from the assembled unit at least one device (1, Fig. X) for monitoring the physical ', Has parameters of the second object or medium ο 4J regulator apparatus according to one or more of the preceding Claims, characterized in that they are ale device for changing the physical Parameters of the influencing object or medium '009830/1257 Mixing valve (14, Pig. 2) that can be installed in the central heating system, operated by a servomotor aultrslst, and that all monitoring devices are on the Ten ρ «β Tür iee HelZstn ^ upiungemlttele on the auatritteaeite dB »StxuiPinBSBittlelsobvintlls (14) appropriate temperatureii * (X3, Flg. 2;» 3, Pig. 3) is provided. 5 · Re & lfcriippvorrichtung according to claim 4, characterized in that the actuator (12, Fig. 2) for because * Utröeungamlttel-Klschventll (14) is combined with the TemperaturfOtilnr (1 ^) to form an assembly that is detachably connected to the flow medium valve (14), um d'iia installation of the fluid mixing valve E (14) in a Eohrtti ^ tungseyetem (P), and that the assembly when attached to the Miach valve body (14) Is fixed in such a predetermined position that the The actuator (12) and the temperature sensor (I)) come into effective communication with the mixing valve (14). 6. Regulator apparatus ur nac.n. Claim 4 or 5, characterized in that the temperature sensor (13, Fig. 2; 18, Pig. 3) in direct contact with or immediately adjacent to the Auflenoberflache (15, 16) of the Misohveritilkörpers (14) is arranged. 7. 'controller apparatus according to claim 4 or 5 *, characterized in that the temperature sensor in one Recess is arranged in the outer surface of the mixer valve body. 009830/1257 Blank page