SU1368586A1 - Automated system for heating forced air - Google Patents

Abstract

The invention relates to a technique of ventilation and improves the reliability of the system. Regulators of the air flow in the flow duct, outside air and return heat carrier (T) are made in the form of heat-sensitive elements 8-10 and actuators connected to them (IM) 12-14. The latter are located respectively on the main 6 and an additional 7 pipelines (TP) and on the bypass line 11. On the TP 6 before IM 12 there is a shut-off valve 15. When the supply air deviates from the specified value, element 8 transmits a correction signal to IM 12, which provides the necessary clearance of the cross section for TH on the main TP 6. Part of the return TH is discharged on TP 7, carried out the regulation of the consumption of TH to maintain the specified air temperature before the heater 4, to prevent the heater from freezing through it is passed through a small amount of TN, its withdrawal through TP 7 and line 11. 1 Il.

Description

V /

T - L

F /

/ / 5 Yu P 14

one

The invention relates to the field of ventilation and heating. The purpose of the invention is to increase reliability.

The drawing shows the function: The schematic diagram of the automated system for supply air heating.

The system contains a supply chamber 1 with successively located outside air 2, filter | rm 3, heater 4 and fan, main 6 and additional 7 pipelines and air temperature controllers in the supply air duct, external air and return heat It is made in the form of heat-sensitive elements 8-10, respectively. The system also contains a bypass line 1I of the main pipeline. To the heat-sensitive elements 10, actuating mechanisms are connected: ::: anisms 12-14, located respectively on the main 6 and additional 7 pipelines and on the bypass line 1 and 1 The main pipeline is equipped with a shut-off valve 15, which is installed in front of the executive mechanism 12 of the temperature-sensitive element 8 of the air temperature in the air duct, i The air heating system operates in a step-by-step manner. i Before start-up, the system opens the shut-off valve 15, allowing the return heat carrier to move along the main pipeline 6. Since the cross section of the pipeline 6 is larger than the cross section of the additional pipeline 7 fi of the bypass line I, more quantity passes through the heater 4 the heat carrier for heating the heater 4 to the working temperature. After that, the fan 5 and through the valve 2, the filter 3 and the calorifier 4 are turned on, air enters the intake duct. The temperature sensing element 8 is blown with heated air.

When the supply air temperature deviates from a predetermined value, the temperature sensitive element B transmits a correction signal to the actuator I2, which provides the necessary clearance for the heat transfer fluid through the main pipeline 6, ensuring the maintenance of the specified supply air temperature. Part of the return heat carrier is discharged through the pipeline 7, carrying out flow control

685862

heat carrier using a temperature sensitive element 9 to maintain a predetermined air temperature in front of the heater 4. Movement of the heat carrier through the bypass line 11 is blocked by the actuator 14 of the temperature sensitive element 10, since the return heat temperature JQ of the carrier is higher than the supply air temperature.

When the supply chamber I is turned off, the shut-off valve 15 is closed, preventing the circulation of the coolant through

the main pipeline 6. In order to prevent the freezing of the heater 4, a small amount of heat carrier is passed through it, its removal

2Q through the additional pipeline 7 and the bypass line P. communicated with it. At the same time, maintaining the set temperature before the heater 4 is carried out using a temperature-sensitive element 9, the actuator-13 of which carries out the Change of the flow rate of the heat carrier in the additional pipeline 7. At the same time It maintains the 30 ° C of this temperature of the return heat medium when the heat sensitive element 10 and its actuator 14 are assisted by changing the flow rate of the heat carrier through the bypass switch.

j. line 11.

Claims (1)

Invention Formula Q Automated supply air heating system containing the supply chamber with successively located outside air valve, filter, heater and fan, main and additional pipelines and air temperature controllers in the supply air duct, outside air and reverse heat carrier, that, in order to increase reliability, the main pipeline is equipped with a bypass line, air temperature controllers in the supply air duct, outside air and return heat carrier Nena a thermosensitive elements and connected to them actuators disposed respectively on the primary and secondary conduits and 0 - 1368586 a bypass line, with the main pipe mechanism TepM04yBCTBHTehbHoro the elec- troplate equipped with a shut-off valve, the air temperature in the room installed before the execution unit.