KR200435724Y1 - System for elevating an exhaust efficiency of waste gas in chimney - Google Patents

Abstract

The present invention is to turn on and off the fan attached to the top of the chimney so that the pressure in the chimney is kept lower than the bottom in response to the change of the discharge of polluted air discharged into the chimney from the branch pipe of each floor of the building, The present invention relates to an exhaust efficiency optimization control system applied to a local exhaust granular duct of a multi-storey building which can optimize exhaust efficiency by controlling a damper that opens and closes a passage of an induction duct so that external air (hereinafter referred to as "outer air") is introduced. In the present invention, the aforementioned microcomputer C receives the sensing value and the differential pressure value of the first static pressure sensor P1, and as a result of determining the signal value, the pressure value of the first static pressure sensor P1 is -20 Pa in a natural state. If the differential pressure value is maintained below 30 Pa while maintaining below, the power of the fan motor M1 and the damper M2 is cut off, but if the differential pressure is maintained above 30 Pa, the power of the fan motor M1 is supplied to the ventilator. When the motor M1 is operated and the differential pressure is not maintained below 30 Pa even when the fan is operated, power is also supplied to the damper M2 to allow air to flow into the bottom of the chimney 1, in a natural state. When the differential pressure is maintained at 30 Pa or more regardless of the pressure of the first static pressure sensor P1, power is always supplied to the fan motor M1 to force the blower 3 to be driven, and the blower 3 is operated to When the pressure difference between the upper and lower parts of the chimney is maintained at 30 Pa or more, the power of the damper M2 is supplied to allow the outside air to flow into the lower part of the chimney. If the differential pressure is maintained at 30 Pa or less, the power of the damper M2 is turned off. Control to block the inflow of outside air into the chimney by blocking. Therefore, according to the above control, exhaust efficiency in the chimney can always be optimized according to the conditions in the chimney regardless of the change in the external environment of the chimney, thereby greatly improving the exhaustion efficiency.

Chimney, exhaust, airflow, ventilator

Description

System for elevating an exhaust efficiency of waste gas in chimney

1 is a cross-sectional view of a building showing an example of a chimney installed in a high-rise building,

Figure 2 is a sectional view of the main part showing the main part of the chimney according to the present invention,

3 is a block diagram illustrating a circuit configuration of an exhaust efficiency optimization control system applied to a local exhaust granulation duct of a multi-story building of the present invention.

<Description of the symbols for the main parts of the drawings>

1: chimney 2: branch pipe

3: ventilator 4: outside air duct

11: Differential pressure comparison part 12: Pressure judgment part

C: Mycom P1: First static pressure sensor

P2: 2nd positive pressure sensor M1: Fan motor

M2: Damper

The present invention is to turn on and off the fan attached to the top of the chimney so that the upper pressure in the chimney is kept lower than the lower side in response to the change of the discharge of polluted air discharged into the chimney from the branch pipe of each floor of the building, The present invention relates to an exhaust efficiency optimization control system applied to a local exhaust granulation duct of a multi-storey building which can optimize exhaust efficiency by controlling a damper that opens and closes a passage of an induction duct so that air (hereinafter, referred to as "outer air") is introduced. .

Public buildings such as apartments or high-rise buildings with many offices are equipped with branch pipes (also called exhaust ducts) to exhaust polluted air from each floor and intake ducts that supply clean air to the room. It is.

The branch pipe is connected to the main chimney in the ceiling of each floor is designed to discharge the indoor polluted air out of the chimney, the chimney is operated by a power source to quickly discharge the polluted air from the inside out Alternatively, by installing a non-powered fan to rotate at the end of the natural wind causing the pressure difference inside the chimney during the rotation of the fan to discharge the air in the chimney to the outside.

In general, the exhaust performance of the chimney is a natural condition, that is, the exhaust efficiency of the chimney is low in the summer, the winter is characterized by excellent exhaust efficiency. This phenomenon is caused by the change in atmospheric pressure because the internal pressure of the chimney varies according to the season.

As described above, a ventilator is installed in the chimney to solve the difference in the exhaust performance of the seasonal chimney, and the fan is rotated in response to the change in the atmospheric environment, thereby forcibly generating a pressure difference in the chimney so that the polluted air is discharged to the outside. It is. Conventional fans are mainly used as a fan that is rotated by a power source or a non-powered fan that is rotated by a natural wind.

However, even when the fan is installed in the chimney, when the pressure in the chimney, that is, the pressure in the upper and lower parts of the chimney changes according to the increase and decrease of the discharge discharged from the branch pipe of each layer to the chimney, especially when the lower pressure of the chimney is lower than the upper part of the chimney There is a problem that the exhaust efficiency is sharply lowered.

For example, when the amount of polluted air discharged from the branch pipe below the chimney is large, that is, when the pressure at the bottom of the chimney is higher than the top, the polluted air does not smoothly rise to the top of the chimney. In this case, since the fan installed in the chimney operates irrespective of the pressure change in the chimney, there is a problem of wasting power by unnecessary operation of the fan.

On the contrary, when the amount of air discharged from the branch pipe is small, when the upper pressure of the chimney is lower than the lower pressure, since the flow of air flow is naturally formed from the lower part to the upper part, it can be smoothly discharged without an auxiliary device such as a fan.

Therefore, in a conventional chimney exhaust system employing a ventilator that operates in response to changes in the atmospheric environment, the fan is operated irrespective of the pressure change in the chimney, thereby causing a waste of electric energy, thereby quickly discharging contaminated air in the chimney. For this purpose, it was required to develop an exhaust system of the chimney which controls the airflow according to the exhaust to always flow upward.

The present invention was devised by the necessity of the chimney exhaust system which can control the air flow to flow upward as described above, the object of the present invention is to increase the amount of polluted air discharged from the branch pipe into the chimney The present invention provides an exhaust efficiency optimization control system applied to a local exhaust granulation duct of a multi-storey building in which the air flow in the chimney flows upward by sensing the pressure and controlling the pressure of the upper portion in the chimney to be lower than the lower side.

An implementation means for implementing an exhaust efficiency optimization control system applied to the local exhaust granulation duct of the multi-storey building according to the present invention is:

In the chimney to which a plurality of branch pipes are connected to each floor, the fan is coupled to the roof having a motor rotated by a power source,

A damper (M2) for opening and closing a passage of the fan (3) attached to the upper part of the chimney (1) and the outside air induction duct (4) connected to the lower part of the chimney;

First and second static pressure sensors P1 and P2 attached to the upper and lower portions of the chimney;

The pressure determining unit 12 which receives the sensing value detected by the setting unit and the first static pressure sensor P1 and determines the sensing value 12 and the two sensing values sensed by the first and second static pressure sensors P1 and P2. Receiving each signal value from the differential pressure comparing unit 11 for calculating the differential pressure for the pressure value of the first positive pressure sensor (P1) is maintained at -20 Pa or less in the natural state while the differential pressure is maintained at 30 Pa or less When the power of the motor M1 and the damper M2 is cut off but the differential pressure is maintained at 30 Pa or more, the power of the fan motor M1 is supplied to drive the fan motor M1.

If the differential pressure is not maintained below 30 Pa even when the ventilator is operated, power is also supplied to the damper M2 to allow air to flow into the bottom of the chimney 1,

If the differential pressure is maintained at 30 Pa or more regardless of the pressure of the first static pressure sensor P1 in a natural state, the fan 3 is always supplied with power to force the blower 3 to be driven.

Even when the blower 3 is operated, when the pressure difference between the upper and lower parts of the chimney is maintained at 30 Pa or more, the power is supplied to the damper M2 to control external air installed at the end to flow from the lower side.

If the differential pressure is maintained below 30 Pa, it can be achieved by the configuration of the microcomputer (C) for controlling the power supply of the damper (M2) to block the inflow of outside air into the chimney.

According to the present invention, it is possible to improve the exhaust efficiency of the chimney regardless of changes in the external environment by maintaining the air flow in the chimney always flows upward.

Hereinafter, an exhaust efficiency optimization control system applied to a local exhaust granulation duct of a multi-story building according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, FIG. 1 is a cross-sectional view of a multi-storey building in which an exhaust efficiency optimization control device according to the present invention is constructed, and FIG. 2 illustrates an example of the chimney by extracting the configuration of the chimney according to the present invention. Fig. 3 is a block diagram showing a circuit configuration according to the exhaust pressure optimization control device in the chimney of the present invention.

1 and 2, a chimney 1 is provided inside a high-rise building, and branch pipes 2 of each floor are connected to the chimney 1.

In the drawings, reference numerals P1 and P2 are first and second static pressure sensors attached to upper and lower inner walls of the chimney 1, respectively, and 11 is detected by the first and second static pressure sensors P1 and P2. A differential pressure comparison unit that receives a signal and determines the pressure difference, 12 is a pressure determination unit that receives the signal value sensed by the first static pressure sensor P1 and determines the value thereof, and M1 is the chimney 1. A fan motor (operated by a power source) having a propeller installed at the top and rotating by a power source, and M2 opens and closes a passage of an outside air induction duct 4 coupled to communicate with the lower inner wall of the chimney 1. It is a damper.

Referring to FIG. 3, the sensing value of sensing the pressure of the upper side of the chimney 1 by the first positive pressure sensor P1 described above is transmitted to the differential pressure comparing unit 11 and the pressure determining unit 12, respectively. 2 The positive pressure sensor P2 senses the lower pressure of the chimney 1 and transfers the pressure to the differential pressure comparing part 11 to calculate the differential pressure (differential pressure value = P1 value-P2 value) by the differential pressure comparing part 11. .

The differential pressure comparison unit 11 transmits the differential pressure value to the microcomputer C, and determines whether the pressure difference is 10 Pa or more compared with the set value set in the microcomputer C, and judged by the pressure determining unit 12. In response to the pressure value of the first static pressure sensor P1 (the upper pressure value of the chimney), it is determined whether the sensing value of the first static pressure sensor P1 is 20 Pa or less or greater than or equal to 0 Pa. If the sensing value of (P1) is less than 20 Pa and the differential pressure value is less than 10 Pa, the power of the fan motor M1 and the damper M2 is cut off, and if the sensing value of the first static pressure sensor is greater than 0 Pa If the differential pressure value is less than 10 Pa, power is supplied to the fan motor M1 and the damper M2 to operate the fan and open the passage of the outdoor air duct about 1/2.

If the pressure value of the first positive pressure sensor P1, that is, the upper pressure of the chimney 1 is greater than or equal to 0 Pa in the judgment of the microcomputer C, the chimney shade is not rotated by natural wind, The pressure is maintained at a high level, and when the pressure is lower than -20 Pa, it means a state in which air flow in the chimney flows upward, such as a pressure generated during a typhoon.

Therefore, when the pressure on the top of the chimney 1 is equal to or greater than 0 Pa, the pressure difference must be measured to force the fan to operate. If the differential pressure does not decrease when the fan is operated as described above, the passage of the induction duct 4 is opened so that the outside air is guided to the lower side of the chimney 1 so that the air flow in the chimney can be controlled to flow upward. When the differential pressure value is 10 Pa or less, the air flow in the chimney 1 flows upward, that is, since the pressure on the upper side is low, the power supplied to the fan motor M1 and the damper M2 is cut off.

For reference, the practical application example according to the exhaust state of the chimney will be described for clarity.

The microcomputer C receives the sensing value and the differential pressure value of the first static pressure sensor P1, and as a result of the determination of the signal value, the pressure value of the first static pressure sensor P1 is maintained below -20 Pa in a natural state. When the differential pressure value is maintained below 30 Pa, the power of the fan motor M1 and the damper M2 is cut off, but when the differential pressure is maintained above 30 Pa, the power of the fan motor M1 is supplied to supply the fan motor M1. If the differential pressure is not maintained below 30 Pa even when the ventilator is operated, power is supplied to the damper M2 to allow air to flow into the lower portion of the chimney 1, and if the first positive pressure sensor When the differential pressure is maintained at 30 Pa or more regardless of the pressure of P1), power is always supplied to the blower motor M1 to force the blower 3 to operate, and even when the blower 3 is operated, the upper and lower differential pressures of the chimneys. If it is maintained above 30 Pa, supply the power of the damper M2. And performs control such that the outdoor air is installed on the inlet at the lower end, and controls so as to If differential pressure is maintained at or below 30 Pa to cut off the power of the damper (M2) to block the inflow of outside air.

Therefore, according to the above control, exhaust efficiency in the chimney can always be optimized according to the conditions in the chimney regardless of the change in the external environment of the chimney, thereby greatly improving the exhaustion efficiency.

As described above, the exhaust efficiency optimization control system applied to the local exhaust granulation duct of the multi-storey building according to the present invention senses the pressure in the chimney so that the pressure of the upper layer is always kept larger than the lower layer pressure to cope with the change in atmospheric pressure. It is possible to optimize the exhaust efficiency of the chimney at all times without requiring the installation of a fan to greatly improve the exhaust efficiency.

Claims (1)

In the chimney to which a plurality of branch pipes are connected to each floor, and the fan is coupled to the roof having a motor rotated by a power source, A damper (M2) for opening and closing a passage of the fan (3) attached to the upper part of the chimney (1) and the outside air induction duct (4) connected to the lower part of the chimney; First and second static pressure sensors P1 and P2 attached to upper and lower portions of the chimney; The pressure determining unit 12 which receives the sensing value detected by the setting unit and the first static pressure sensor P1 and determines the sensing value 12 and the two sensing values sensed by the first and second static pressure sensors P1 and P2. Receiving each signal value from the differential pressure comparing unit 11 for calculating the differential pressure for the pressure value of the first positive pressure sensor (P1) is maintained at -20 Pa or less in the natural state while the differential pressure is maintained at 30 Pa or less When the power of the motor M1 and the damper M2 is cut off but the differential pressure is maintained at 30 Pa or more, the power of the fan motor M1 is supplied to drive the fan motor M1. If the differential pressure is not maintained below 30 Pa even when the ventilator is operated, power is also supplied to the damper M2 to allow air to flow into the bottom of the chimney 1, If the differential pressure is maintained at 30 Pa or more regardless of the pressure of the first static pressure sensor P1 in a natural state, the fan 3 is always supplied with power to force the blower 3 to be driven. Even when the blower 3 is operated, when the pressure difference between the upper and lower parts of the chimney is maintained at 30 Pa or more, the power is supplied to the damper M2 to control external air installed at the end to flow from the lower side. If the differential pressure is maintained below 30 Pa, it is applied to the local exhaust granulation duct of the multi-storey building, characterized in that it consists of a microcomputer (C) to block the power of the damper (M2) to block the inflow of outside air into the chimney. Exhaust efficiency optimization control system.

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