KR102538420B1 - Integral Ventilation System - Google Patents

Abstract

An integrated ventilation system is disclosed. In the integrated ventilator according to an embodiment of the present invention, it is determined whether or not the filter unit is clogged according to the back electromotive force of the fan unit to accurately determine the replacement time of the filter unit.

Description

Integrated ventilation system {Integral Ventilation System}

The present invention relates to a ventilation system, and more particularly to an integrated ventilation system.

In general, a ventilation system is a system that cleans the air by removing dust, germs, and odors in the air. Dust and odors contained in indoor air or outdoor air sucked in by the operation of an air supply fan for air circulation are removed by a plurality of filters. and the purified air is discharged back into the room to purify the indoor air.

As time passes, contaminants such as dust accumulate in the filter provided inside the duct of the ventilation system, and eventually the filter becomes clogged. It was disclosed in Patent No. 10-2007-0072787.

According to the filter replacement timing notification device and method of an air purifier disclosed in the Publication, the load current flowing through the air supply fan is measured and the measured current value is compared with a predetermined current value so that the measured current value is equal to or less than the reference current value. It informs the replacement time of the back filter.

Here, the conventional filter replacement timing notification device and method of the ventilation system as described above simply reduces the amount of air supplied to the air supply fan side when the filter is contaminated, so that the rotation speed of the air supply fan decreases due to the decrease in load applied to the air supply fan. It is assumed that the measured current value decreases accordingly.

However, although the air supply fan is supplied with an operating voltage (or operating current) to rotate at a constant rotational speed, that is, a fixed rotational speed, in order to suppress the generation of noise, etc., Since the load is reduced, the number of revolutions of the air supply fan increases by the error range at the time of design of the number of revolutions of the air supply fan.

Therefore, the conventional ventilation system cannot detect the increased rotational speed within the error range of the air supply fan unless the operating voltage (or operating current) supplied to the air supply fan is reduced so that the air supply fan rotates at a fixed rotational speed. Even if the air supply fan is further rotated by the number of rotations within the error range, it is determined that the number of rotations is the same.

If the operating voltage (or operating current) is not supplied so that the increased rotational speed of the air supply fan is maintained at the initially set constant rotational speed, the air supply fan rotates excessively, resulting in overheating or damage.

In addition, since it is difficult to accurately measure the operating voltage (or operating current) supplied to the air supply fan so that it always operates at a fixed number of revolutions when the exact number of revolutions of the supply fan that rotates excessively is difficult to determine, the operating voltage of the supply fan ( Or, there is an inaccurate problem in determining the filter replacement time using the decrease in operating current).

Republic of Korea Patent Publication No. 10-2007-0072787

The present embodiments are intended to provide an integrated ventilation device capable of accurately detecting whether a filter unit provided in a ventilation device is clogged, providing alarm information to a user when replacement is required, and controlling a ventilation area in a negative pressure mode in response to a fire. do.

The integrated ventilation device according to the present embodiment includes a casing 100 having a passage part 110 for circulating movement of the outdoor air and indoor air in order to circulate the outdoor air to the ventilation zone Z of the building; a fan unit 200 provided inside the casing 100; A filter unit 400 provided inside the casing 100 to filter foreign substances moved to the total heat exchange unit 300 in which heat is exchanged with the air moved through the passage part 110; a backwash unit 900 positioned facing the filter unit 400 and spraying compressed air when foreign substances are accumulated on the filter unit 400; a damper unit 500 installed in the passage 110 and having an open/close state controlled according to the load of the ventilation zone Z; an alarm unit 600 provided to notify a user when the filter unit 400 remains clogged by foreign substances; a ventilation control unit 700 receiving a counter electromotive force signal generated by the operation of the fan unit 200 and determining whether the filter unit 400 is clogged; and an integrated control unit 800 for converting the ventilation zone ZL of another floor or the entire building adjacent to the ventilation zone Z to a negative pressure state when a fire occurs in the building.

The fan unit 200 includes an air supply fan 210 for supplying outside air to the ventilation zone Z; It includes an exhaust fan 220 for sucking outdoor air supplied to the ventilation zone (Z) and discharging it to the outdoors, and the ventilation control unit 700 is a filter in a normal state before being installed in the ventilation zone (Z). Assuming that the fan unit 200 is turned on based on the unit 400, the number of revolutions per minute (rpm) and the power consumption value according to the counter electromotive force generated during the first time period t1 are the filter unit ( 400) is set in advance as a set value for determining clogging, and as the fan unit 200 is operated in the actual ventilation zone (Z), the revolutions per minute (rpm) and power consumption value according to the counter electromotive force are set above the set value. Monitoring whether the filter unit 400 is changed to a filter unit replacement value required for replacement, and controlling the air volume of the fan unit 200 to increase when the fan unit 200 is changed from the set value to be

The passage part 110 includes an outside air passage 112 provided to allow outside air to flow into the casing 100; a return air (RA) passage 114 provided to allow indoor air to flow into the casing 100 from the ventilation zone Z; an air supply passage 116 provided to supply air supplied through the outside air passage 112 to the ventilation zone Z; It includes an exhaust passage 118 provided to exhaust the air introduced through the ventilation passage 114 to the outside of the casing 100, and the damper unit 500 is introduced into the outside air passage 112 a first damper unit 520 that receives outside air and variably adjusts the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118; A second damper unit 530 that receives the outside air introduced into the ventilation passage 114 and variably adjusts the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118 and a third damper unit 540 variably adjusting the opening amount of the outside air flowing into the outside air passage 112; A fourth damper unit 550 variably controls the amount of indoor air discharged through the exhaust passage 118, and the ventilation control unit 700, together with the filter unit 400, controls the first to fourth damper units ( 520, 530, 540, 550) is input and it is determined whether it operates at a normal operating angle.

The backwash unit 900 is installed on the rear side of the filter unit 400 to inject compressed air from the rear side of the filter unit 400 toward the front side, and includes a nozzle unit 910 having a plurality of nozzles 912 formed therein. ; a connection tube 920 having one end connected to the nozzle unit 910 and extending outward at the other end; A compressed air supply unit 930 for supplying compressed air to the connection tube 920 is included, and the nozzle unit 910 is formed in any one shape selected from a circular shape, an elliptical shape, and a polygonal shape.

The nozzle 912 includes a first nozzle 512a opened toward the front of the filter unit 400; Second nozzles 512b are opened at positions inclined at a predetermined angle on left and right sides of the first nozzle 512a, respectively.

The ventilation controller 700 turns off the air supply fan 210 when the backwash unit 900 is operated to block the supply of outside air to the ventilation zone Z, and then the exhaust fan 220 It is characterized in that backwash control for the filter unit 400 is performed by forcibly discharging the foreign substances separated from the filter unit 400 to the outdoors through the exhaust fan 220.

The integrated control unit 700 is connected to the ventilation control unit installed on each floor of the building, and when a fire occurs in the ventilation area of a specific floor, the fire occurs on the floor where the fire occurred and the upper and lower floors of the fire floor are adjacent to each other. It is characterized in that the supply of external air to the ventilation zone (ZL) of the floor adjacent to the fire is cut off, and then forced exhaust is performed to maintain the floor where the fire and the floor adjacent to the fire occur in a negative pressure state.

In another embodiment of the present invention, a method for controlling an integral ventilation device is to provide a user with a replacement cycle according to clogging of the filter unit 400 before the ventilation device is installed in the ventilation zone (Z) of the building. A first step (ST100) of converting the number of revolutions per minute (rpm) and power consumption according to the counter electromotive force generated by the operation of the fan unit 200 based on a state in which the fan unit 400 is not used and setting them to a preset value (ST100) ; a second step (ST200) of monitoring an operating state of the fan unit 200 after the ventilation device is installed in the ventilation zone (Z); a third step (ST300) of determining whether clogging has occurred in the filter unit 400 when the counter electromotive force, revolutions per minute, and power consumption of the fan unit 200 are changed; A fourth step (ST400) of checking whether the damper unit 500 provided in the ventilation device is abnormal when the filter unit 400 is normal; a fifth step (ST500) of providing filter replacement alarm information to a user and confirming whether or not backwashing occurs when it is determined that the filter unit 400 needs to be replaced; and a sixth step (ST600) of performing backwashing on the filter unit 400 at the request of the user.

The fourth step (ST400) further includes a damper unit angle determining step (ST410) of determining whether the operating angle of the damper unit 500 corresponds to a normal operation.

A first negative pressure mode step (ST700) of discharging indoor air of the ventilation zone (Z) to the outdoors when a fire occurs in the ventilation zone (Z) of the specific floor of the building is further included.

When a fire occurs in the ventilation zone (Z) of a specific floor of the building, after all the supply of outside air is blocked to another ventilation zone (ZL) adjacent to the ventilation zone (Z) up and down, the ventilation zone (Z) and other ventilation zones (ZL) A second negative pressure mode step (ST800) of controlling the ventilation zone (ZL) in a negative pressure state is further included.

When the fire spreads throughout the building, the inflow of outside air is forcibly blocked, and all the fan units are operated in the reverse direction to forcefully exhaust the indoor air in the entire ventilation area to the outside in the third negative pressure mode step (ST900). contains more

In embodiments of the present invention, by setting the number of revolutions per minute according to counter-electromotive force of the air supply fan as a criterion for filter clogging, replacement can be performed accurately when clogging of the filter unit occurs.

In the present embodiments, since the replacement cycle of the filter unit is not performed quarterly, and the filter unit can be replaced only when clogging occurs due to actual contamination, costs incurred due to unnecessary replacement can be prevented.

In the present embodiments, when a fire breaks out in a building, it is possible to prevent the rapid spread of the fire by maintaining the ventilation zone in a negative pressure state so as to minimize additional spread.

1 is a view showing an integral ventilation device according to this embodiment.
Figure 2 is a diagram showing a configuration associated with a ventilation control unit provided in the integrated ventilation device according to the present embodiment.
3 is a view showing a backwash unit provided in the integral ventilation device according to the present embodiment.
4 is a view showing another embodiment of the backwashing unit according to the present embodiment.
Figure 5 is a graph showing the correlation between power consumption and air volume according to revolutions per minute in the integrated ventilation device according to the present embodiment.
6 is a view showing a negative pressure state according to forced exhaust when a fire occurs in a building to which an integrated ventilation system according to the present embodiment is applied.
Figure 7 is an operating state diagram of the integrated ventilator according to Figure 6;
8 is a view showing a negative pressure state according to forced exhaust when a fire spreads in a building to which an integrated ventilation system according to the present embodiment is applied.
Figure 9 is an operating state diagram of the integral ventilation device according to Figure 8;
10 is a flowchart illustrating a control method of an integral ventilation device according to the present embodiment.

An integral ventilation device according to an embodiment of the present invention will be described with reference to the drawings.

For reference, the present embodiment can accurately determine the clogged state of the filter unit using the number of revolutions per minute according to the counter electromotive force of the air supply fan without installing a differential pressure sensor in the integrated ventilation system.

Referring to FIGS. 1 to 3, the integrated ventilation device 1 according to the present embodiment is a passage part 110 for circulating the outdoor air and indoor air to circulate the outdoor air to the ventilation zone Z of the building. ) is formed, the fan unit 200 provided inside the casing 100, and the total heat exchange unit 300 in which heat is exchanged with the air moved through the passage part 110. The filter unit 400 provided on the inside of the casing 100 to filter foreign substances, and is positioned facing the filter unit 400, and when foreign substances are stacked on the filter unit 400, compressed air is sprayed. A backwash unit 900 (see FIGS. 3 and 4) that is installed in the passage part 110 and whose opening and closing state is adjusted according to the load of the ventilation zone Z; and the filter unit The alarm unit 600 (refer to FIG. 2) provided to inform the user when the block 400 is blocked by a foreign substance receives the counter electromotive force signal generated according to the operation of the fan unit 200 and the filter Ventilation control unit 700 for determining whether the unit 400 is clogged, and ventilation zones ZL of other floors or the entire building adjacent to the ventilation zone Z in the case of a fire in the building (see FIG. 6) ) includes an integrated control unit 800 for switching to a negative pressure state.

In this embodiment, the clogging state of the filter unit 400, which is essentially installed in the ventilation system, is determined by the number of rotations per minute according to the counter-electromotive force data of the air supply fan 210 provided in the fan unit 200 without using a pressure sensor as in the prior art. The clogging state of the filter unit 400 can be accurately determined using the change in rpm. That is, when the counter electromotive force of the air supply fan 210 gradually increases, it can be determined that the filter unit 400 is clogged.

In this embodiment, the filter unit can be replaced based on whether the filter unit is clogged or not due to contamination, so it can be more accurately performed than the conventional quarterly replacement method.

In this embodiment, the user can be notified of the exact replacement time of the filter unit 400 through the alarm unit 600, so that the user can recognize the exact replacement time of the filter unit 400, and the ventilation zone through the integrated ventilation device. The cleanliness of (Z) can be kept constant and unnecessary power consumption can be minimized.

In this embodiment, the passage part 110 is formed inside the casing 100, the total heat exchange unit 300 is provided for heat exchange, and is located on the left side (based on the drawing) with respect to the total heat exchange unit 300. An outside air passage 112 provided to allow outside air to flow into the casing 100 is formed, and a ventilation RA (return air) provided to allow indoor air to flow into the inside of the casing 100 in the ventilation zone Z. ) passage 114 is formed.

In addition, an air supply passage 116 provided to supply air supplied through the outside air passage 112 to the ventilation zone Z is formed, and the air introduced through the ventilation passage 114 is formed. An exhaust passage 118 provided to exhaust air to the outside of the casing 100 is formed.

The fan unit 200 includes an air supply fan 210 for supplying outside air to the ventilation zone Z and an exhaust fan 220 for sucking in and discharging outdoor air supplied to the ventilation zone Z to the outdoors. include

For example, the supply fan 210 and the exhaust fan 220 use a BLDC motor, and the BLDC motor does not have a fan control unit (not shown) for controlling the operating state, and is independent of the ventilation control unit 700 to be described later. Since it is mounted separately, stable operation and efficiency are maintained compared to the conventional built-in type BLDC motor.

The BLDC motor includes a motor housing forming an outer shape, a shaft built in the center of the motor housing, a rotor (rotor) installed at one end around the shaft, a stator (stator) installed opposite the rotor, When the shaft rotates, it includes bearings that rotate relative to each other.

The BLDC motor corresponds to a high voltage motor operated by receiving AC power of 220V as an input power and then converting it into DC power of 310V.

Since the motor efficiency is improved when the BLDC motor is operated at a high voltage, a large amount of fresh outdoor air can be supplied to the ventilation zone Z in a stable manner without reducing the amount of air supplied to the ventilation zone (Z).

The ventilation controller 700 is electrically connected to the BLDC motor through a motor cable, and the motor cable is made of a three-phase (U, V, W) power cable.

The BLDC motor according to this embodiment can be used even when a high static pressure is applied because a motor operated with a high voltage (DC 250V or more) is used, and power consumption efficiency is higher than that of a conventional BLDC motor with a built-in control board and hall sensor. Therefore, the filter unit 400 uses a HEPA filter rather than a general filter.

The HEPA filter has a removal rate of 99.75% and a H13 grade performance capable of filtering dust size of 0.3 micrometers or less, so it has a removal rate (95%) and Different filtering efficiencies are maintained for different dust sizes (0.5 micrometers).

Such a difference is that ultrafine dust having a size of 2.5 micrometers can be filtered as the size of ultrafine dust is PM2.5, which is very advantageous to the health of occupants residing in the ventilation zone Z.

The ventilation control unit 700 includes a counter electromotive force detection unit (not shown) that detects a counter electromotive force electromotive force generated in the electromagnet coil of the stator when the BLDC motor is operated, and a pulse width modulation signal proportional to the counter electromotive force detected by the counter electromotive force detection unit and a speed controller (not shown) that controls the output voltage of the motor drive by varying (PWM signal).

The speed controller may prevent noise by allowing the sinusoidal wave output from the motor drive to be output in the form of a step wave using the pulse width modulation signal.

The BLDC motor can simplify the structure of the BLDC motor because the control board and Hall sensor for detecting the rotational speed of the rotor, which are generally provided in existing BLDC motors, are not embedded. As a result, it is possible to fundamentally prevent malfunction of the Hall sensor, which is mainly caused by contamination by foreign substances or electric leakage due to dew condensation or leakage from the outside. In addition, the failure rate can be lowered by preventing malfunction of the hall sensor, and the simplification of the BLDC motor makes it easy to take post-measures for defective parts.

In particular, when a defect occurs in the BLDC motor, the A/S time can be shortened due to the simple structure, and since it is a BLDC motor that does not have an expensive hall sensor or control board built-in, the maintenance cost due to replacement is significantly reduced compared to the previous one. do.

On the other hand, since the control board and Hall sensor are not embedded in the BLDC motor as described above, only three-phase (U, V, W) power supply lines are required as the motor cable, which is the power supply line for driving the motor, and the power supply line is also 5 Compared to the line, it can be simplified to 3 lines.

In this way, when a BLDC motor is used for the supply fan 210 and the exhaust fan 220, there is no hall sensor for detecting the rotational speed of the rotor, so the rotational speed of the rotor (rotational speed ) should be detected.

To this end, the ventilation control unit 700 generates a pulse width modulation signal (PWM) as a control signal for initial speed control from the speed control unit when operation and air volume are selected by a separately provided remote control to drive the motor drive.

The initial speed control uses a control method of rotating the motor at high speed, the motor drive includes a bridge circuit using FETs, and drives the BLDC motor by applying a sinusoidal wave according to the pulse width modulation signal.

The motor drive is operated using a step wave such as a 6-step pulse using a pulse width modulation signal, and driving power close to a sine wave is supplied to the motor supply power. In this way, when the motor driving power is supplied in a method close to a sine wave using a 6-step stair wave, the driving power of the motor is not turned on/off abruptly, so that high-frequency noise peculiar to BLDC is reduced.

The present embodiment includes a back EMF detection unit to precisely control the BLDC motor having these characteristics, and detects the back EMF electromotive force generated in the electromagnet coil of the stator when the BLDC motor rotates.

The speed controller detects the position of the rotor using the obtained current of the counter electromotive force, compares the detected current of the counter electromotive force with a reference current, and detects a case where the current of the counter electromotive force is greater than the reference current as the position of the rotor. . Since the position of the rotor is detected using the counter electromotive force as described above, it is the same as detecting the position of the rotor in the conventional Hall sensor, and thus the rotation speed per minute (rpm) of the motor can be accurately calculated.

The filter unit 400 according to this embodiment is installed on the rear side of the total heat exchange unit 300 and filters foreign substances contained in outdoor air to prevent them from being supplied to the ventilation zone Z.

Ventilation control unit 700 according to the present embodiment assumes that the fan unit 200 is turned on based on the filter unit 400 in a normal state before being installed in the ventilation zone Z. The number of revolutions per minute (rpm) according to the counter electromotive force generated for one hour (t1) and the value of power consumption are set in advance as setting values for determining clogging of the filter unit 400 .

That is, the air supply fan 210 is operated based on the state in which no foreign matter is deposited on the filter unit 400, and outdoor air is sucked in and passes through the filter unit 400 via the total heat exchange unit 300. The difference between the pressure of outdoor air and the pressure passing through the filter unit 400 corresponds to the static pressure outside the cabin.

According to the present invention, prior to the installation of an integral ventilation device in the actual ventilation zone (Z), through a test, a pre-logic according to the counter electromotive force of the fan unit 200 is input as a set value for determining clogging of the filter unit 400. do. In the test, the air supply air volume of the air supply fan 210 must be maintained at 90% or more of the rated air volume, and 70% or more of the rated air volume of the air supply fan 210 is set at the final ventilation resistance value of the filter unit 400. set to a value

The setting value has a predetermined range from minimum A to maximum B, and when maintained within the range, it is determined that the filter unit 400 is in a normal state.

In this way, when the setting value is logicalized, it is possible to accurately predict the lifespan of the filter unit 400 and replace it according to the replacement time, so that maintenance and management of the filter unit 400 becomes easier.

In this embodiment, the setting values calculated through the preliminary test of the fan unit 200 and the filter unit 400 are logicalized, stored in the ventilation controller 700, and installed in the ventilation zone Z of the actual building The fan unit 200 is installed in the building after pre-programming has been performed prior to becoming the fan unit 200 .

The ventilation control unit 700 determines that the number of revolutions per minute (rpm) and power consumption values according to the counter electromotive force are set at the set values while the fan unit 200 is operated in the actual ventilation zone Z, and the filter unit 400 needs to be replaced. It monitors whether the filter unit replacement value is changed, and when the fan unit 200 is changed from the set value, proportional control is performed so that the air volume of the fan unit 200 is increased.

That is, the ventilation controller 700 determines the number of revolutions per minute of the air supply fan 210 when the counter electromotive force that exceeds the value A and changes to the value B in the range of A to B defined as the set value of the supply fan 210 is detected. Air volume control is performed by increasing in proportion to the exceeded range until clogging due to the use of the filter unit 400 occurs.

The damper unit 500 receives the external air introduced into the external air passage 112 and variably adjusts the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118. 1 receives the outside air introduced into the damper unit 520 and the ventilation passage 114 and variably adjusts the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118 A second damper unit 530, a third damper unit 540 that variably adjusts the opening amount of outside air flowing into the outdoor air passage 112, and variably adjusting the amount of indoor air discharged through the exhaust passage 118 It includes a fourth damper unit 550 to be.

In addition, the ventilation controller 700 receives operating angles of the first to fourth damper units 520, 530, 540, and 550 together with the filter unit 400 and determines whether they operate at normal operating angles.

In this embodiment, whether or not the filter unit 400 is clogged and whether or not the first to fourth damper units 520, 530, 540, and 550 operate normally without malfunctioning also determines the clogged state of the filter unit 400. It is entered as a condition for judgment.

When the first to fourth damper parts 520, 530, 540, and 550 are operated in an open or closed state, any one damper part may malfunction or may not be positioned in an open position.

In this case, it may be determined that the filter unit 400 is clogged when the inflow of outside air is reduced even though the filter unit 400 is not clogged or when a damper located at a specific position operates abnormally.

In this embodiment, in order to solve this problem, the ventilation control unit 700 can receive the operating angles of the first to fourth damper units 520, 530, 540, and 550 and determine in real time whether or not they are operating normally. It is possible to accurately determine whether or not the unit 400 is clogged, and to perform a notification accordingly.

3 and 4, the backwash unit 900 according to the present embodiment is installed on the rear side of the filter unit 400 to inject compressed air from the rear side of the filter unit 400 toward the front side. , a nozzle unit 910 in which a plurality of nozzles 912 are formed, a connection tube 920 having one end connected to the nozzle unit 910 and the other end extending outward, and compressed air through the connection tube 920. It includes a compressed air supply unit 930 for supplying.

In the backwashing unit 900, when the filter unit 400 is determined to be clogged by the ventilation control unit 700, backflushing is selectively and automatically performed according to a change state of the back-electromotive force, or backflushing is performed according to a user's command. can

Although it is preferable to replace the filter unit 400 when clogging occurs, backwashing is performed as described above in order to extend the life of the filter unit 400 and reduce the user's economic burden due to replacement.

In the nozzle unit 910 according to the present embodiment, a nozzle 912 is formed so that compressed air is sprayed from the rear surface of the filter unit 400 toward the front surface, and the nozzle 912 blows the front surface of the filter unit 400. and a first nozzle 512a opening toward the first nozzle 512a, and a second nozzle 512b opening at positions inclined at predetermined angles to left and right sides of the first nozzle 512a.

The first nozzle 512a is formed to remove foreign substances stacked on the front surface of the filter unit 400, and the second nozzle 512b is opened obliquely to the left and right, so that the first nozzle 512a and It becomes more advantageous to remove foreign substances stacked in different positions.

The filter unit 400 has a rectangular plate shape, and when outside air passes through, a foreign matter stacking region S is formed in a predetermined area radially outward from the center.

The foreign matter stacking area (S) is an area where dust contained in the outside air is mainly stacked, and when a large amount of foreign matter is stacked in the above position, the counter electromotive force and RPM of the air supply fan 210 inevitably increase. The nozzle unit 910 is formed in any one shape selected from a circular shape, an elliptical shape, and a polygonal shape for backwashing in consideration of the accumulation of foreign substances in the unit 400 .

For example, when the nozzle unit 910 is located at the center of the filter unit 400, the efficiency of backwashing for removing foreign substances is improved, but when the outside air passes through the filter unit 400, it interferes with the movement flow or causes unnecessary vortexes. It can be formed in any one of circular or elliptical shapes having a movement path extending along the edge of the filter unit 400.

In addition, the nozzle unit 910 may be formed in a polygonal shape, and in addition to the above-described shape, it may be changed into another shape that does not interfere with the flow of outside air.

The connecting tubes 920 are connected to the nozzle units 910 and are provided to supply compressed air generated from the compressed air supply unit 930 to the nozzle units 910 . The connecting tube 920 may be disposed at other positions other than the positions shown in the drawings and may be changed without being specifically limited to the positions shown in the drawings.

The compressed air supply unit 930 is provided to supply compressed air and may be located inside or outside the casing 100 .

The alarm unit 600 according to the present embodiment may be configured to generate an alarm sound along with a warning sound from a wall pad (not shown) provided in a living room of an apartment house. The alarm unit 600 may provide information (alarm) for replacement or inspection of the current filter unit 400 to the user, so that the user can accurately recognize the filter unit 400 replacement time.

The ventilation control unit 700 according to the present embodiment turns off the air supply fan 210 when the backwash unit 900 is operated to block the supply of outside air to the ventilation zone Z, and then the exhaust fan 220 is operated so that foreign matter separated from the filter unit 400 is forcibly discharged to the outdoors through the exhaust fan 220, thereby controlling the backwashing of the filter unit 400.

In this case, outside air is not supplied to the ventilation zone (Z), and foreign substances such as dust are separated by compressed air injected to the filter unit 400 through the aforementioned nozzle 912, and the casing 100 is removed by the exhaust fan 220. ) is discharged to the outside of the

At this time, the second to third damper parts 530 and 540 are all converted to a closed state, and the first damper part 520 and the fourth damper part 550 are converted to an open state and separated from the filter unit 400 The removed foreign matter is discharged to the outside of the casing 100 through the exhaust fan 220 .

Referring to FIG. 5 attached, in this embodiment, when the air supply fan 210 is operated, the air volume and power consumption are changed according to the change amount of revolutions per minute (RPM) as shown in the drawing.

If the above-described filter unit 400 is continuously used in the initially installed state, clogging due to foreign substances occurs, the number of revolutions per minute (RPM) of the air supply fan 210 increases, and the counter electromotive force also changes, and power consumption also increases proportionally.

However, since the air volume decreases opposite to the revolutions per minute of the air supply fan 210, an accurate determination according to clogging of the filter unit 400 can be made through the ventilation control unit 700 using the revolutions per minute and counter electromotive force. .

6 and 7, the integrated control unit 700 according to the present embodiment, when a fire occurs in the ventilation zone (Z), cuts off the supply of outside air to the ventilation zone (Z) and only exhausts the fire. It can be controlled so that additional oxygen supply required for combustion is cut off at the initial stage of occurrence.

In this case, the ventilation control unit 700 maintains the supply fan 210 in an off state and controls the exhaust fan 220 to operate at maximum rpm, so that the air in the ventilation zone Z is supplied by the exhaust fan as shown by the arrow. As it is discharged through 220, the ventilation zone (Z) is converted to a negative pressure state.

8 to 9, the integrated control unit 700 according to the present embodiment is linked to the ventilation control unit installed on each floor of the building, so that when a fire occurs in the ventilation zone (Z) of a specific floor, the fire is prevented. After blocking all air supply to the ventilation zone (ZL) of the fire outbreak floor and the fire adjacent floors adjacent to the upper and lower floors of the fire outbreak floor, forced exhaust is performed to prevent the fire outbreak floor and the fire adjacency. The layer can be maintained under negative pressure.

In this case, the ventilation controller 700 controls the supply fan 210 to operate in the reverse direction, and controls the exhaust fan 220 to operate in the normal direction.

Air in the ventilation zone (Z) of the specific floor and the ventilation zone (ZL) of the adjacent floor is discharged to the outside of the building through the exhaust fan 220, and the air sucked through the air supply fan 210 is also indicated by an arrow. As shown, it is converted to a negative pressure state while being discharged to the outside of the building.

In this way, when a fire breaks out to a specific floor or a specific floor in a building as well as an adjacent floor, the spread of the fire can be additionally minimized, thereby contributing to preventing human life and property damage.

A control method of an integral ventilation device according to another embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 1 or FIG. 10, the present embodiment provides the user with a replacement cycle according to clogging of the filter unit 400 before the ventilation device is installed in the ventilation zone Z of the building. A first step (ST100) of converting the number of revolutions per minute (rpm) and power consumption according to the counter electromotive force generated by the operation of the fan unit 200 based on a state in which the fan unit 400 is not used and setting them to a preset value (ST100) And, a second step (ST200) in which the operating state of the fan unit 200 is monitored after the ventilation device is installed in the ventilation zone (Z), and the counter electromotive force, revolutions per minute, and power consumption of the fan unit 200 A third step (ST300) of determining whether clogging has occurred in the filter unit 400 when is changed, and if the filter unit 400 is normal, checking whether or not the damper unit 500 provided in the ventilation device is abnormal A fourth step (ST400) of performing the filter unit 400, and a fifth step (ST500) of providing filter replacement alarm information to the user and confirming whether or not to backwash when it is determined that the filter unit 400 needs to be replaced, and at the user's request. A sixth step (ST600) of performing backwashing of the filter unit 400 is included.

In the first step (ST100), the number of revolutions per minute is subdivided according to the change in counter electromotive force of the fan unit, and power consumption according to the number of revolutions per minute is mapped in advance and stored in the ventilation control unit described above through programming.

In the second step (ST200), the number of revolutions per minute and power consumption according to counter electromotive force are monitored in real time while the fan unit is operated by the ventilation control unit.

The third step (ST300) determines whether the filter unit is clogged when the counter-electromechanical range is changed or the number of revolutions per minute is changed to more than a set value.

The fourth step (ST400) further includes a damper unit angle determining step (ST410) of determining whether the operating angle of the damper unit 500 corresponds to a normal operation.

If clogging does not occur in the filter unit, since there is no problem in the filter unit, an abnormality may occur in a configuration for supplying outside air, and thus it is determined whether the operating angle of the damper unit is normal or abnormal.

Since the operating angle of the damper unit is input to the ventilation control unit, it is possible to determine whether the filter unit is actually clogged by additionally determining the operating angle of the damper unit when the current filter unit is normal.

In a fifth step (ST500), alarm information according to filter replacement is provided to the user and confirmation is made to the user whether or not to perform backwashing.

If backwashing is performed immediately along with the alarm information, additional use is possible without replacement of the filter unit (ST600).

In this embodiment, when a fire occurs in the ventilation zone (Z) of a specific floor of the building, the first negative pressure mode step (ST700) of discharging indoor air in the ventilation zone (Z) to the outdoors may be performed. In the first negative pressure mode step (ST700), when a fire occurs in the ventilation zone (Z), the oxygen supply required for combustion is gradually reduced or an exhaust fan is operated so that the ventilation zone (Z) maintains a negative pressure state so that the room is indoors. The air is discharged to the outside and the air supply fan is turned off so that no additional outside air is introduced.

In this embodiment, after the supply of external air to the ventilation zone Z and the other ventilation zone ZL vertically adjacent to each other is blocked, the ventilation zone Z and the other ventilation zone ZL are controlled in a negative pressure state. 2 It further includes a negative pressure mode step (ST800).

In the second negative pressure mode step (ST800), when a fire spreads to the upper or lower floors of a building or to neighboring floors, indoor air in the ventilation zone Z and another ventilation zone ZL is discharged to the outdoors to minimize additional fire spread. control as much as possible

In this embodiment, when the fire spreads to the entire building, the inflow of outside air is forcibly blocked, and the fan units are all operated in the reverse direction to forcibly exhaust the indoor air in the entire ventilation area to the outside in the third negative pressure mode step ( ST900) is further included.

In the third negative pressure mode step (ST900), both the supply fan and the exhaust fan are operated to exhaust all the indoor air in the ventilation zone (Z) to the outdoors, thereby minimizing the supply of oxygen required for combustion, thereby minimizing the rapidly spreading fire. Personal injury can be prevented.

In the above, one embodiment of the present invention has been described, but those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention can be variously modified and changed by the like, and this will also be said to be included within the scope of the present invention.

Z: ventilation zone
100: casing
200: fan unit
300: total heat exchange unit
400: filter unit
500: damper unit
600: alarm unit
700: ventilation control unit
800: integrated control unit
900: backwash unit

Claims (3)

a casing 100 formed with a passage 110 for circulating the outdoor air and indoor air in order to circulate the outdoor air to the ventilation zone Z of the building;
a fan unit 200 provided inside the casing 100;
A filter unit 400 provided inside the casing 100 to filter foreign substances moved to the total heat exchange unit 300 in which heat is exchanged with the air moved through the passage part 110;
a backwash unit 900 positioned facing the filter unit 400 and spraying compressed air when foreign substances are accumulated on the filter unit 400;
a damper unit 500 installed in the passage 110 and having an open/close state controlled according to the load of the ventilation zone Z;
an alarm unit 600 provided to notify a user when the filter unit 400 remains clogged by foreign substances;
a ventilation control unit 700 receiving a counter electromotive force signal generated by the operation of the fan unit 200 and determining whether the filter unit 400 is clogged; and
Including an integrated control unit 800 for switching the ventilation zone (ZL) of the entire building or another floor adjacent to the ventilation zone (Z) to a negative pressure state when a fire occurs in the building,
The integrated control unit 800 is connected to the ventilation control unit installed on each floor of the building, and when a fire occurs in the ventilation zone of a specific floor, the fire occurs on the floor where the fire occurs and the upper and lower floors of the fire floor are adjacent to each other. Supply air provided in the fan unit 200 to maintain the fire outbreak floor and the fire adjacent floor in a negative pressure state by performing forced exhaust after all external air supply to the ventilation zone (ZL) of the floor adjacent to the fire is cut off. Regarding the fan 210 and the exhaust fan 220, the supply fan 210 is controlled to operate in a reverse direction, and the exhaust fan 220 is controlled to operate in a normal direction;
The passage part 110 includes an outside air passage 112 provided to allow outside air to flow into the casing 100, and a ventilation provided to allow indoor air to flow into the casing 100 from the ventilation zone Z. RA) (return air) passage 114, and an air supply passage 116 provided to supply air (SA) (supply air) to the ventilation zone (Z) with the air introduced through the outside air passage 112, It includes an exhaust passage 118 provided to exhaust the air introduced through the ventilation passage 114 to the outside of the casing 100,
The damper unit 500 receives the external air introduced into the external air passage 112 and variably adjusts the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118. 1 Variable control of the amount of air supplied to the air supply passage 116 or the air supply passage 116 and the exhaust passage 118 by receiving outside air introduced into the damper unit 520 and the ventilation passage 114 a second damper unit 530 that variably adjusts the opening amount of outside air flowing into the outdoor air passage 112, and a third damper unit 540 that variably adjusts the amount of indoor air discharged through the exhaust passage 118. It includes a fourth damper unit 550 that is controlled,
The ventilation control unit 700 receives the operating angles of the first to fourth damper units 520, 530, 540, and 550 together with the filter unit 400 and determines whether they operate at normal operating angles,
In the backwash unit 900, the nozzle unit 910 installed on the rear surface of the filter unit 400 is disposed with a movement path extending along the edge of the filter unit 400,
The ventilation control unit 700 switches all of the second to third damper units 530 and 540 to a closed state when the backwash unit 900 is operated, and the first damper unit 520 and the fourth damper unit 550 is an integrated ventilation device, characterized in that by switching to an open state, foreign substances separated from the filter unit 400 are discharged to the outside of the casing 100 through the exhaust fan 220. According to claim 1,
The air supply fan 210 is provided to supply outside air to the ventilation zone (Z), and the exhaust fan 220 is provided to suck in the outdoor air supplied to the ventilation zone (Z) and discharge it to the outdoors.
The ventilation control unit 700 assumes that the fan unit 200 is turned on based on the filter unit 400 in a normal state before being installed in the ventilation zone Z, and operates for a first time period t1. ), the number of revolutions per minute (rpm) and power consumption according to the counter electromotive force generated during ) are set in advance as setting values for determining clogging of the filter unit 400
As the fan unit 200 is operated in the actual ventilation zone Z, whether the revolutions per minute (rpm) and power consumption values according to the counter electromotive force are changed from set values to filter unit replacement values that require replacement of the filter unit 400. carry out monitoring
An integrated ventilation device characterized in that the air volume of the fan unit 200 is controlled to increase when the fan unit 200 is changed from the set value. According to claim 1,
In the backwash unit 900, a plurality of nozzles 912 installed on the rear surface of the filter unit 400 are formed in the nozzle unit 910 to inject compressed air from the rear surface of the filter unit 400 toward the front surface. ,
a connection tube 920 having one end connected to the nozzle unit 910 and extending outward at the other end;
Including a compressed air supply unit 930 for supplying compressed air to the connection tube 920,
The nozzle unit 910 is an integral ventilation device, characterized in that formed in any one shape selected from a circular shape, an elliptical shape, or a polygonal shape.

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