SU1509845A1 - Temperature controller - Google Patents

Abstract

The invention relates to thermal regulators, designed in conjunction with a control valve for maintaining a predetermined temperature of a liquid and gaseous medium. The purpose of the invention is to simplify the design, increase reliability and accuracy. The thermostat includes a housing 1 with an inlet 2 and a drain 3 channels, between which a nozzle-flap regulator is located, the flap of which is made in the form of a membrane 5 located on a thermowell 6 attached to the housing 1. An additional nozzle is installed between the inlet 2 and the main 4 channels 7, the cavity between which and the main nozzle 4 forms an intake chamber 8 connected by a channel 9 with an actuating mechanism. 2 Il.

Description

3150

The invention relates to thermal regulators which, together with control valves, are used to maintain a predetermined temperature of a liquid and gaseous medium, for example, the temperature of hot water supply in heat supply systems.

The purpose of the invention is to simplify the design of the thermostat, increasing its reliability and accuracy.

FIG. 1 shows a thermostat, a longitudinal section; in fig. 2 - thermostat when regulating the temperature of hot water.

The thermostat includes a housing 1 with an inlet 2 and a drain 3 channels, between which is located the regulator and the form of the main nozzle 4 and the membrane 5.

 A thermal bulb 6 is installed on the housing 1, the cavity of which is blocked by the membrane 5. An additional nozzle 7 is installed between the nozzle 4 and the inlet channel 2, and the cavity between the nozzles 7 and 4 forms the suction chamber 8 connected by the channel 9 with the actuator cavity

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When the temperature of the heated water decreases, the volume of liquid in the thermocylinder 6 decreases, the membrane 5 moves down, increasing the gap. As a result, the pressure Rc in the chamber decreases, which leads to a decrease in pressure in the supermembrane cavity of the actuator, (control valve, Fig. 2). The control valve lets more water through and restores the temperature of the heated water to a predetermined value.

As the water temperature in 5 hot water networks increases, the membrane 5 rises, pressure P increases and the control valve closes, reducing the flow of heating water and bringing the temperature of the heated water to the desired one.

As a working medium, you can use a liquid or gas controlled medium or other source.

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Claims (1)

Invention Formula The thermostat, comprising a housing with inlet and drain channels, between which is located the regulator in the form of the main nozzle and the barrier (Fig. 2). The nozzle 7 and the camera 8 form the control body associated with An ejector transducer is installed on which the control unit of the thermostat is mounted. The thermostat works as follows. Working water under pressure PO. It is fed to the nozzle 7 (Fig. 1), and from there to the heating system 4. Passing the gap between the end face of the nozzle 4 and the membrane 5, the water is discharged through the drain channel 3 to the sewer. The pressure in chamber 8 depends on the amount of the gap between the end face of the nozzle 4 and the membrane 5, which covers the thermal bulb 6. The required gap between The nozzle tube 4 and the membrane 5 define a 45 measure of suction, which is connected to. when adjusted and locked with a nut on housing 1. a command chamber of the actuator, and a thermal bulb connected to the housing, characterized in that, in order to simplify the design, to increase the accuracy and reliability of operation, the damper is formed by a membrane installed between the main nozzle and the thermal balloon, the governing body is in the form of an ejector . The transducer is formed by an additional nozzle installed between the inlet channel and the main nozzle, and the cavity between the main and additional nozzles forms a single cavity of the actuator. Uj fne / 7 / focf / rru from bododrop th-1 In the heating system To the DHW network Phi2.2