CS207073B1 - Connection for regulation of the electro-heating devices by the electronic heat regulator - Google Patents

Description

CZECHOSLOVAK SOCIALISTICREPUBLIC (19) DESCRIPTION OF THE INVENTION 1207 073 dl) (Bl)

TO THE COPYRIGHT CERTIFICATE

(6 »(23) Show Priority (22) Enrolled 16 11 79 (2i) PV 7846-79 (51) Int Cl.G 05 D 23/19

OFFICE OFFICE

& DISCOVERY (40) Published 15 09 80 (45) Published Q1 H 83 (75)

The inventor of the invention

LOSÁK DUŠAN, BRATISLAVA (5-4) Connection for regulation of electrothermal devices by electronic temperature controller 1

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection for controlling electrothermal devices by an electronic temperature controller using a single power supply.

Up to now, long-term temperature control of electrothermal devices utilizes temperature controllers with oscillating-type hand position sensors, controlling two relays, having two switching contacts. Such regulators are of considerable weight, volume, costly unsuitable for overburden and shock and shock. In addition, the costly miniaturization is free. These drawbacks are eliminated by electronic temperature controllers, their flip-flop controls two output relays, with one switching contact. A disadvantage of such electronic converters is their three-position control in the middle zone without action, allowing only two control powers to be used from a single power supply. These performances can be used in two extreme control zones, while the middle control band is not used as the most needed. Known wiring for electronic temperature control by using a non-contact thyristor switch cannot be used for triac power controllers.

The above drawbacks of wiring to control electroheat devices from a single triac power supply by an electronic temperature controller removes the connection of the invention.

The essence of the invention is that the outlet of one control potentiometer is connected to one switching contact, the outlet of the second control potentiometer is connected to 207 073

Claims (1)

207 073 to one expansive contact and the output of the third control potentiometer is connected to the second temperature control contact switch. The advantage of the proposed connection is the possibility of three-position intervention from one triac-controlled power supply. A schematic connection to a three-position control and one triac-controlled power supply and an electronic temperature controller is shown in the attached drawing. The wiring consists of a power supply A connected to the network; a control consumer B connected to the power supply by the potentiometers G, D, E of the connected power supply and the electronic temperature controller F connected to the power supply control potentiometer. The connection according to the invention operates in dependence on the position of the switching contacts of the temperature controller. When the temperature drops and decreases, the contacts 5, 6 and 9 and 10 re-present the extreme control band with a higher power. The circuit is closed from one terminal 3 of the power supply control circuit, the potentiometer 6, the contacts 26a 9 and 10 of the temperature controller F and the other terminal 4 of the power supply control circuit 4. Connections 6-2 and 9 and 10 are connected in the control zone representing a mean control band with a power corresponding to the desired temperature. The circuit is similarly closed from the control potentiometer D via the connected contacts 6, 2 and 2, 10 ále Sál. Upon increasing the temperature, the network is connected by contacts 6, 2 and 8, 2 representing the second extreme control zone with a minimum power. The circuit closed from the control potentiometer E via the connected contacts 8, 2 and 8, respectively. According to deviations of the set temperature, the controllers alternate between the three sets. The connection according to the invention can be used for long-term demanding heat treatment with the advantage of electric energy saving. OBJECT OF THE INVENTION The connection for regulating the electrothermal devices by an electronic temperature controller using a pressure regulator of the power connected to the mains and output to the controlled appliances, the inlets and the runners of the current potentiometers are connected to one terminal of the control circuit, the other terminal of the control circuit is connected to the second one. a temperature controller contact whose one changeover contact is coupled to the second switch contact, characterized in that the lead of the first control potentiometer (C) is connected to the first switch contact (5), the lead of the second control potentiometer (D) is connected to the first switch contact contact (7) and the outlet of the third control potentiometer (E) is connected to the second switch contact (8) of the temperature controller (F). 1 drawing