KR100975636B1 - advanced controlling system without electrical power and electronic signal for elevating an exhaust efficiency of waste gas in chimney - Google Patents

Abstract

The present invention controls the operation of the hybrid ventilator rotated by a power source or natural wind installed on the top of the chimney, and by controlling the opening and closing of the electric damper to open and close the inflow of outside air into the chimney by the respective controller by controlling the fan and electric It is a wireless exhaust efficiency optimization device used for local exhaust ducts in multi-storey buildings that do not require communication wires connected between dampers, sensors, and controllers or piping to protect the wires.

The present invention independently controls the operation of the fan motor (M1) installed in the upper chimney, and the opening and closing operation of the electric damper (M2) for opening and closing the passage so that the outside air flows into the chimney or blocked is installed in the chimney independently In addition, the air flow in the chimney can be optimized to flow upward, as well as the electric fan 3 installed in the upper part of the chimney 1 and the outside air induction duct 4 provided in the lower part of the chimney 1. There is no need to install additional wires, pipes, and conduits inside the chimney (1) for mutual interlocking in the damper (M2), and no additional construction cost is required, and construction and maintenance is possible by controlling the fan and electric damper by electric signals. It has the advantage of being very easy and simple.

 Chimney, exhaust, airflow, ventilator

Description

Advanced controlling system without electrical power and electronic signal for elevating an exhaust efficiency of waste gas in chimney}

The present invention relates to an exhaust system for optimizing the exhaust efficiency of the exhaust granular duct (hereinafter referred to as "chimney") of a multi-storey building, and more particularly, a fan installed in the upper part of the chimney by sensing the pressure of the chimney The present invention relates to a wireless chimney exhaust system that does not require an electric fan, a sensing tube, and a pipe connected to the fan and the electric damper by independently installing each controller controlling the rotation of the electric damper or controlling the opening and closing operation of the electric damper installed at the bottom of the chimney.

As is well known, the multi-storey building is equipped with a chimney for exhausting the air from the outside, and the chimney (small diameter duct) through each household's kitchen or toilet is attached to the chimney, where indoor air is polluted. Is generally applied.

Usually, at the upper end of the chimney, a hybrid fan having a propeller and a motor which is rotated by natural wind and also rotated by a power source is installed.

Therefore, a negative pressure (-) is generated in the chimney due to the natural wind, and the airflow in the chimney flows upward, and the exhaust gas is easily discharged. If the exhaust is smoothly performed by the natural wind, the chimney pressure is negatively negative in the winter when the wind is strong and the exhaust efficiency is excellent while the low natural wind is maintained in the summer. In rare cases, the exhaust efficiency is reduced.

As described above, in order to overcome the difference in exhaust performance caused by the presence or absence of natural winds generated seasonally, a technology was developed in which the air pressure flows upward by arbitrarily adjusting the sound pressure in the chimney. 20-0425261 (August 24, 2006).

The technical characteristics of the above utility model is to install a pressure detection sensor for detecting pressure in the upper side of the chimney and a pressure detection sensor for detecting the pressure in the bottom of the chimney, respectively, and receives the values sensed by the two sensors and In comparison, the technical content of controlling the driving of the fan according to the result is made.

In addition, Korean Utility Model Registration No. 20-435724, "Exhaust efficiency optimization control system applied to a local exhaust granular duct of a multi-storey building," developed and applied by the present inventor, has also been proposed.

Technical features of the above-described registered utility model (No. 20-435724) developed by the present inventors, as shown in Figure 1, the upper part of the chimney (1), supplying the outside air into the chimney The outside air inductor 4 is installed as much as possible, and the microcomputer C receives the sensing value of detecting the upper / lower pressure in the chimney 1, compares it with the set value, and drives the fan motor M1 according to the result. And / or by controlling the opening and closing of the electric damper (M2) is a technology implemented so that the air flow in the chimney flows upward.

In addition, the inventor has proposed an improved exhaust efficiency optimization system in which the exhaust efficiency is optimized in response to changes in the amount of exhaust gas between buildings.

Referring to FIG. 2, in controlling the air flow in the chimney 1 to flow upward, the orifice meters S1 to Pn are installed in the chimney 1 at predetermined intervals to quickly detect the pressure change of each floor. The difference between the highest sensing value and the highest sensing value among the plurality of sensing values below the highest sensing value is determined by comparing the highest sensing value among the detected sensing values with the set value and according to the result. Compared to the set point and according to the result, by opening and closing the exhaust fan (3) installed at the top of the chimney and / or the electric damper (M2) installed at the bottom of the chimney, air flow in the chimney regardless of the height of the building and in response to the pressure change between floors It is characterized by a technical configuration that can be precisely controlled to flow upward at all times.

However, in the conventional exhaust efficiency optimization control device of the chimney exhaust gas according to Figs. 1 and 2, the sensor must detect the pressure inside the chimney and transmit it to the microcomputer C, and the sensing value is determined by the microcomputer C. According to the result, power should be supplied to the fan 3 and the electric damper M2, so that the communication wire between the microcomputer C, the motor M1 of the fan 3, the electric damper M2, and the sensors or the pipe for protecting the same. They are installed on the chimney wall and are expensive.

Cables and pipes can be buried in chimneys along with new constructions when new buildings are constructed, but additional electrical work is required for new constructions. If you install wires or pipes in the finished building, you will not be able to enter the narrow chimney, so you will have to tear down the walls of the resident's household. There is a problem that takes a considerable time. Despite these problems, it is possible to apply exhaust system control that requires sophisticated control.

An object of the present invention is to ensure that the air flow in the chimney always flows upwards, the upper part of the chimney is a fan that is rotated by forced and natural wind by the power drive, and the lower part of the chimney to the outside air flows into the chimney causing the chimney effect In the exhaust efficiency optimization system of the chimney equipped with an outdoor induction duct equipped with an electric damper that controls the passage to open or cut off to reduce the power of the forced drive motor, in the control of whether the fan is driven Receives two sensing values of the static pressure sensor and the differential pressure sensor installed on the side and compares them with the set value, and independently installs a fan control controller that controls the operation of the fan according to the result, and the passage of the electric damper installed in the outdoor air duct. To sense the pressure in the lower part of the chimney, and compare the value with the set value. According to the result, the electric damper control controller for controlling whether the damper is opened or closed independently is installed so that the ventilation fan and the damper are not installed between the ventilation fan installed at the upper part of the chimney and the electric damper installed at the lower part of the chimney without installing a sensing tube, wire, or pipe for communication. The present invention provides a wireless type exhaust system employed in a local exhaust granulation duct of a multi-storey building, which can be controlled independently of each other to control the air flow to the upper side of the chimney.

Means for implementing a wireless exhaust system employed in a local exhaust duct of a multi-storey building according to the invention are:

The pressure sensing unit comprising a positive pressure sensor and a differential pressure sensor attached to the inner wall of the chimney and the detection value sensed by the positive pressure sensor and the differential pressure sensor are received and compared with the set value set in the setting unit to determine the static pressure sensing value. When the pressure is higher than the predetermined pressure and the differential pressure is higher than the predetermined pressure, power is supplied to the fan motor to turn on the fan, and when the differential pressure sensing value is equal to or lower than the predetermined pressure, the power supplied to the fan is cut off. A controller for controlling the fan drive so as to be off);

When the pressure (negative pressure) sensing value is higher than a predetermined pressure by receiving the sound pressure sensor attached to the lower inner wall of the chimney and the signal value detected by the sound pressure sensor, the setting value of the outside air induction duct The damper may be achieved by a configuration of a damper opening / closing controller for controlling the electric damper so that the electric damper installed in the lower part is opened and closed when the negative pressure sensing value is lower than the predetermined pressure.

According to the present invention, the controller for controlling the blower drive and the controller for controlling the opening and closing operation of the electric damper are independently operated by pressure sensing of a sensor installed inside the chimney so as to be connected in a circuit in a conventional exhaust system, that is, a microcomputer, a fan, an electric damper. In addition, the installation of sensing tubes or wires and wires connected between the sensors is not required, so that the airflow in the chimney can be controlled to flow upward regardless of the height of the building. It is very easy to operate and offers the advantage of low operating costs.

Hereinafter, a wireless type exhaust system employed in a local exhaust granular duct of a multi-storey building according to the present invention will be described in detail with reference to the accompanying drawings.

3 to 4b, there is shown a cross-sectional view of the main part of a chimney employing a wireless exhaust system employed in a local exhaust duct of a multi-storey building in accordance with the present invention, and FIG. 4a and 4b show the present invention. Block for illustrating the configuration of the controller (C1) for controlling the driving fan (3) installed in the upper part of the chimney (1) according to the present invention, and the controller (C2) for controlling the opening and closing of the air induction duct installed in the lower part of the chimney (1) according to the present invention. Figure is illustrated. For reference, reference numerals for the main components of the drawings of the present invention are denoted by the same reference numerals for the same configuration shown in Figures 1 and 2 illustrating the prior art described above.

As shown in Figure 3, the inside of the building is provided with a chimney (1), the chimney (1) is connected to the branch pipe (2) of each floor to induce the indoor air to be discharged to the chimney.

An upper part of the chimney 1 is provided with a fan 3 having a motor M1 driven by a power supply and a controller C1 for controlling the drive of the fan motor M1. A lower part of the chimney 1 The controller C2 is configured to control the opening and closing operation of the electric damper M2, which causes the outside air to flow in or out.

The static pressure sensor P1 and the differential pressure sensor P2 are attached to the inner wall of the upper side of the chimney 1 at a predetermined distance, and the negative pressure sensor P3 is provided on the lower side.

The controller C1 for driving control of the fan motor M1 is composed of a comparison determination unit 11a and a first setting unit 13a. The comparison determination unit 11a compares the determination value with the value set in the first setting unit 13a (set in advance by the designer) to receive the sensing values detected by the positive pressure sensor P1 and the differential pressure sensor P2, and then determines the exhaust fan. Determine whether the motor is running. In other words, the pressure of the upper chimney detected by the static pressure sensor P1 is first compared, and the value sensed by the differential pressure sensor P2 is compared. When the power is supplied to the fan motor and the pressure in the chimney is maintained below the set pressure even if the differential pressure is higher than the set pressure, it is determined that the pressure inside the chimney is maintained at the negative pressure (-) below the set pressure by the natural wind. The electricity supplied to the motor M1 is turned off.

The set value set in the first setting part 13a is different from the height of the building to be employed, that is, the height of the chimney, so that the internal pressure of the chimney is not the same, and thus it is difficult to limit it to a specific value. However, in order to improve the understanding of the technical idea of the present invention, in the following embodiments, when the present invention is adopted in a 15-story building, the pressure and wind speed of the upper layer of the chimney will be described in detail, but it is not meant to limit the specified numerical value. Please understand.

When the pressure in the upper part of the chimney is equal to or greater than the predetermined pressure and the differential pressure value is equal to or greater than the predetermined pressure, the first setter 13a rotates the fan 3 by supplying power to the fan motor M1, and the differential pressure sensing value is predetermined. When the pressure is lower than the control unit, the power supplied to the power supply to the fan motor M1 is cut off.

If the natural wind moving around the fan acts as a strong wind, such as a typhoon, the pressure in the chimney naturally forms a negative pressure, and even if pollutants are discharged from the generation, it is not necessary to force it by a power source. However, if the amount of polluted air discharged from the room increases rapidly even in a strong wind such as a typhoon, the negative pressure inside the chimney decreases, and if the duct internal pressure is maintained above the upper duct static pressure setting value, the ventilator motor (M1) Forced exhaust with power.

Therefore, the positive pressure sensor P1 is a situation in which the ventilator 3 is to be operated when the pressure in the chimney 1 is greater than the pressure set in the first setting unit 13a as shown in FIG. 4A. The differential pressure sensor P2 has two sensing values of the positive pressure sensor P1 and the differential pressure sensor P2 since the ventilation fan 3 needs to be operated when the wind speed of the air flow is greater than the set value set in the first setting unit 13a. It is programmed to supply power to the fan motor M1 only under the condition detected above this predetermined pressure.

In the drawing, reference numeral 12a denotes a differential pressure determining unit for determining a wind speed value detected by the differential pressure sensor P2 (orifice meter) as shown in FIG. 6.

As shown in FIG. 4B, the electric damper M2 installed below the chimney 1 has the second setter 13b electrically connected to the controller C2, and is connected to the chimney at the second setter 13b. The negative pressure sensor P3 installed inside the lower part of 1) is connected. Therefore, when the sensing value detected by the sound pressure sensor P3 is received and the sensing value is larger than the setting value set in the second setting unit 13b, the electric damper M2 is supplied to open the power.

The negative pressure sensor (P3) is a negative pressure generated in the chimney (1) by the rotation of the fan 3, the pressure change is generated in the lower chimney due to the pipe flow, so the negative pressure sensor (P3) to change the pressure change The controller C2 controls the opening and closing of the electric damper M2 based on the detected information.

The working example of the present invention configured as described above will be described with reference to Figs. 5A and 5B.

FIG. 5A is a flowchart illustrating a processor according to the controller for controlling the fan shown in FIG. 4A, and FIG. 5B illustrates a processor according to the controller for controlling the opening and closing operation of the electric damper installed in the outside air duct shown in FIG. 4B. As one flowchart, first, a processor of the controller for controlling the fan drive shown in Fig. 4A will be described.

When the power is supplied, the wireless chimney exhaust system according to the invention commences operation. The positive pressure sensor P1 and the differential pressure sensor P2 installed in the above-described chimney 1 respectively detect upper pressures in the chimney 1, and transmit the sensing values to the pressure comparison unit 12, respectively. The value and the differential pressure sensing value are compared with the set value preset by the designer in the first setting part 13a, and according to the result, power is supplied to the fan motor M1 by the fan drive control controller C1 and driven. Or stop the power supply.

[Example]

In the following description of the present embodiment, a specific pressure value is arbitrarily set to help understand the technical idea of the present invention. First, understand that the numerical value may be changed according to the geographical position, the height of the building, and the external (atmosphere) environment. I hope.

In controlling whether or not the fan motor M1 is driven, the upper pressure of the chimney 1 should be driven, but the pressure of the upper floor of the chimney varies depending on the number of floors of the building. Assuming that is installed, the conditions for supplying power to the fan motor M1 and the electric damper M2 under the conditions will be described.

(1) Conditions for supplying power to the fan motor M1

The controller C1 has a sensing value detected by the differential pressure sensor P2 provided on the top of the chimney 1 of about 2 Pa or more (air flow is about 1 to 2 m / s), and the positive pressure sensing by the static pressure sensor P1. When the value (sound pressure) is about -10Pa or more (-9, -8, -7 .....), power is supplied to the fan motor M1, and the sensing value of the differential pressure sensor P2 is about 2Pa or less ( 1.5, 1, 0 ......) and cuts off the power to the fan motor M1 when the sensing value of the static pressure sensor P1 is about −10 Pa or less.

(2) Conditions for opening the passage by supplying power to the electric damper (M2)

The controller C2 is powered by the controller C2 such that the electric damper M2 installed in the outside air inductor 4 closes the passage of the outside air inductor 4 when the sound pressure sensing value is about −10 Pa or more. When it is about -10 Pa or less, it is controlled by the controller C2 so that the passage of the outside air inductor 4 is opened.

The electric damper (M2) has a sound pressure sensor (P3) to detect the sound pressure generated in the chimney (1) when the fan 3 is rotated by natural wind or fired by power so that the opening and closing operation is controlled by the controller. That is, since the opening and closing operation of the electric damper is interlocked with the rotation of the fan, a slight exhaustion efficiency decrease may occur due to time delay even without installing a sensing tube, an electric wire, or a pipe in the chimney as before. It can be configured to flow in the upward direction.

As described above, the wireless type chimney exhaust system employed in the local exhaust duct of the multi-storey building according to the present invention controls the fan and the dampers installed at the upper and the lower of the chimney. In addition, the controller for controlling the electric damper can be installed so that the air flow in the chimney flows upward, and there is no need to install a sensing tube, an electric wire and pipes along the inside of the chimney. Therefore, the exhaust system according to the present invention does not need to dismantle the wall when employed, so it is possible to complete the exhaust system with the optimized exhaust efficiency by electrically connecting to an existing fan or electrically connected to an electric damper. There is little to no, the construction is very easy, the construction cost is low, and the maintenance is very easy to provide.

1 is a cross-sectional view of a main portion of a chimney showing an example of a conventional exhaust efficiency optimization control system installed in a chimney of a building;

Figure 2 is a sectional view of the main part of the chimney showing the main part of the exhaust system of another conventional chimney;

3 is a sectional view of the main parts of a chimney showing an example of the adoption of a wireless type exhaust system according to the present invention;

Figure 4a is a block diagram illustrating the configuration of a controller for controlling the fan drive installed on top of the chimney of the present invention,

Figure 4b is a block diagram illustrating the configuration of the electric damper controller for opening and closing the outdoor air induction duct installed in the lower part of the chimney of the present invention,

5A is a flowchart illustrating a processor in accordance with a controller for driving control of an exhaust fan shown in FIG. 4A;

5A is a flowchart illustrating a processor according to the controller for controlling electric damper shown in FIG. 4B;

6 is a sectional view showing the main parts of a specific example of the differential pressure sensor employed in 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

11a, 11b: pressure comparison section 13a, 13b: first and second setting sections

C1, C2: first and second controller P1: static pressure sensor

P2: Differential pressure sensor P3: Sound pressure sensor

M1: Fan motor M2: Electric damper

Claims (1)

The upper part of the chimney (1) is provided with a fan (3) that rotates by power or natural wind, and the lower part of the chimney (1) is equipped with an electric damper (M2) to control the inflow of outside air into the chimney (1) The outside air induction duct 4 is attached, and the sensing value detected by the static pressure sensor P1 and the differential pressure sensor P2 attached to the upper side of the chimney is received and compared with the set value set in the first setting unit 13a. If it is determined that the positive pressure sensing value is greater than or equal to the predetermined pressure and the differential pressure value is greater than or equal to the predetermined pressure, power is supplied to the fan motor M1 to rotate the fan 3, and when the two sensing values are less than or equal to the predetermined pressure, the ventilator motor. A fan control controller C1 controlling to cut off power supplied to the power M1; The sound pressure sensor P3 attached to the lower inner wall of the chimney 1 and the signal value detected by the sound pressure sensor p3 are received and compared with the set value set in the second setter 13b to compare the sound pressure. A wireless exhaust type used for a local exhaust granular duct of a multi-story building, comprising a controller C2 for controlling the electric damper M2 so that the passage of the outside air inductor 4 is closed when the sensing value is higher than a predetermined pressure. system.

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