KR102165311B1 - Smart indoor air quality management system and method of managing thereof - Google Patents

Abstract

Disclosed is a smart air quality management system for a public facility. According to the present invention, the smart air quality management system for a public facility comprises: a plurality of unit air management units (100, 100a, 100b) having internal pollution measuring devices (130, 130a, 130b); an external pollution measuring device (200) for measuring the pollution level of external air; a Bluetooth low energy network (300); and a central control unit (400). According to the present invention, the internal air quality for each space can be automatically managed.

Description

Smart air quality management system for public facilities, houses, and other indoor spaces, and a smart management method for air quality using it {SMART INDOOR AIR QUALITY MANAGEMENT SYSTEM AND METHOD OF MANAGING THEREOF}

The present invention relates to a public facility air quality smart management system, which measures the internal air quality of each space of a public facility in real time and automatically manages the internal air quality so as not to interfere with classes or work. About.

As the health environment of the modern society improves, life expectancy increases, and public interest in health is increasing. However, the air quality is deteriorating day by day due to the use of fossil fuels such as the advancement of industrialization and the rapid increase in automobile use, and the concentration of various pollutants including fine dust exceeds the dangerous level.

In addition to air pollution, indoor air quality, which spends most of the time (over 80-90%), is also highly polluted, but in most cases, such conditions are left unrecognized.

Pollutants that pollute indoor air quality include fine dust (PM10, PM25) and volatile organic compounds (VOCs). These pollutants are aggravated by cooking, smoking, microorganisms, etc., and indoor air may be worse than outdoor air. Therefore, in an enclosed indoor space, the level of indoor pollution due to indoor pollutants and human activities is generally 2 to 5 times higher than that of outdoors, sometimes more than 100 times.

Meanwhile, public facilities including schools, government offices, and large buildings are generally equipped with air purifiers to manage indoor air quality for each space. The air purifier is equipped with a high-performance HEPA filter to remove fine dust from fine particles.

However, since a large number of personnel reside in one space at the same time, there is a limitation in filtering pollutants such as CO ₂ and radon that the residents exhale while breathing.

Accordingly, the middle window is opened to ventilate the inside air and fresh outside air is supplied, but there is a problem that heat loss in the room occurs during this process. In addition, since the act of opening the window is performed manually, there is a problem in that it is difficult to keep the internal air quality of each space constant.

Document 1. Korean Intellectual Property Office, Patent Publication No. 10-2010-0058948, "Smart air cleaning system and air cleaning method linked according to the outdoor environment" Document 2. Korean Intellectual Property Office, Patent Registration No. 10-1007730, "Intelligent Air Purification System" Document 3. Korean Intellectual Property Office, Patent Publication No. 10-2019-0106935, "Indoor air quality control method and control device using intelligent air purifier"

An object of the present invention is to solve the above-described problem, and a public facility air quality smart management system capable of automatically managing the internal air quality of each space based on the internal air quality and external air quality of each space measured in real time, and It is to provide a smart management method for public facilities air quality using this.

Another object of the present invention is a public facility air quality smart management system that can quickly manage the internal air quality of each space without interfering with the activities of residents based on the use time (class hours or working hours) of each space of the public facility, and It is to provide a smart management method for public facilities air quality using this.

Another object of the present invention is to provide a smart public facility air quality management system capable of minimizing heat loss due to a difference between an internal air temperature and an external air temperature in a ventilation mode, and a smart air quality management method for public facilities using the same.

The object of the present invention described above can be achieved by a public facility air quality smart management system for integrated management of the internal air quality of a plurality of spaces. The public facilities air quality smart management system of the present invention includes a plurality of unit air management units (100, 100a, 100b) that are individually installed in each space and have internal pollution measuring devices (130, 130a, 130b); An external pollution measuring device 200 installed outdoors to measure the pollution degree of external air; A Bluetooth low-power network 300 provided for each space; A plurality of space-specific usage timetables are stored, and each unit air management unit (100, 100a, 100b) based on the internal air quality measured by the internal pollution meter (130, 130a, 130b) and the external air quality measured by the external pollution meter (200). ) And a central control unit 400 for controlling individual driving.

Here, the plurality of unit air management units (100, 100a, 100b) are, respectively, air circulation devices (110, 110a, 110b) coupled to the outer wall of the space to ventilate the internal air and the external air; An air purifier (120, 120a, 120b) provided on one side of the air circulation device (110, 110a, 110b) to purify the internal air; A space use detection unit (140, 140a, 140b) determining whether or not a space is used by using the Bluetooth low power network 300; The internal air quality received from the internal pollution meter (130, 130a, 130b) and the space usage determined by the space use detection unit (140, 140a, 140b) are transmitted to the central control unit 400, and from the central control unit 400 The received driving information of the air circulation device (110, 110a, 110b) and the driving information of the air purifier (120, 120a, 120b) are transferred to the air circulation device (110, 110a, 110b) and the air purifier (120, 120a, 120b). It is preferable to include a transmission set-top (170, 170a, 170b).

In the smart public facility air quality management system according to the present invention, the central control unit applies a control signal to the air circulation device and air purifier in each space based on the internal air quality transmitted from the internal pollution meter of each space, so that the internal circulation mode and the ventilation mode are changed. It runs automatically.

Accordingly, when indoor air pollution is severe, fresh outside air is supplied, so that the internal air quality of each space can always be managed at a certain level.

In addition, the smart public facility air quality management system according to the present invention determines whether or not the space is used in each space in connection with the network network according to the characteristics of the public facility, so that the intake fan in the ventilation mode during space use is And the exhaust fan are driven at low speed, and the suction fan and exhaust fan are driven at high speed when the space is not in use.

In addition, the smart public facility air quality management system according to the present invention is provided with a natural heat exchanger and a forced heat exchanger inside the air circulation device, so that heat loss due to the difference between the external air temperature and the internal air temperature can be actively reduced.

1 is a schematic diagram schematically showing the configuration of a smart public facilities air quality management system according to the present invention,
2 is a schematic diagram schematically showing the configuration of an air circulation device of a smart public facility air quality management system according to the present invention;
3 is a block diagram showing the configuration of a smart public facility air quality management system according to the present invention,
4 and 5 are flowcharts illustrating an air quality management process of the smart public facilities air quality management system according to the present invention.

Hereinafter, the present invention will be described in detail with reference to a preferred embodiment of the present invention and the accompanying drawings, but it will be described on the premise that the same reference numerals refer to the same elements.

In the detailed description of the invention or in the claims, when any one component "includes" another component, it is not construed as being limited to only the component unless otherwise stated, and other components It is to be understood that it may further include.

Hereinafter, an example in which the smart public facility air quality management system of the present invention is implemented will be described through specific embodiments. 1 is a schematic diagram schematically showing a state in which the smart public facility air quality management system 1 of the present invention is applied to a public facility divided into a plurality of spaces.

However, the public facilities air quality smart management system of the present invention can be applied to various public facilities such as schools, government offices, companies, and large buildings.

Here, the public facility consists of a plurality of spaces 10, 10a, 10b. A corridor 20 is formed between the plurality of spaces 10, 10a, 10b, and a window is formed on the outer wall of the spaces 10, 10a, 10b. Although only eight spaces on one floor are shown in FIG. 1, this is only an example, and the smart air quality management system for public facilities of the present invention simultaneously manages air quality for all spaces of one public facility in a plurality of floors and a plurality of buildings. can do.

In some cases, when a plurality of buildings are arranged adjacent to each other, the air quality of all spaces of the plurality of buildings may be managed together through the smart air quality management system 1 for public facilities of the present invention.

As shown in Figure 1, the public facilities air quality smart management system 1 of the present invention includes a plurality of unit air management units 100, 100a, 100b provided for each space, an external pollution meter 200 provided outside the space, and , Bluetooth low power network 300 provided for each space, and a central control unit 400 that controls the driving of the unit air management units 100, 100a, 100b so that the internal air quality of each space is managed based on the indoor air quality and the external air quality. Includes.

The first unit air management unit 100 is provided in the first space 10 to manage the internal air quality, and the second unit air management unit 100a is provided in the second space 10a to manage the internal air quality. The unit air management unit 100b is provided in the third space 10b to manage the internal air quality. In addition, a corresponding unit air management unit is provided for each space.

Since the configuration of the plurality of unit air management units 100, 100a and 100b are all the same, only the first unit air management unit 100 provided in the first space 10 will be described in detail.

The first unit air management unit 100 is provided on the outer wall of the space 10 to discharge the internal air to the outside and suck the external air into the first air circulation device 110, and the inside of the first space 10 A first air purifier 120 that is provided to remove contaminants contained in the internal air to circulate the internal air, and a first internal pollution meter that is provided inside the first space 10 to detect the degree of contamination of the internal air The first internal temperature measuring device 135 is provided on one side of the first internal pollution measuring device 130 and measuring the internal temperature, and the first space 10 is interlocked with the Bluetooth low-power network 300. A first space use detection unit 140 that determines whether or not the current space is used, a first air circulation device 110 and a first air purifier 120 and a first internal pollution meter 130 and a first internal temperature meter ( 135) and the first space use detection unit 140 receives information from the central control unit 400, and transmits the control signal received from the central control unit 400 to the first air circulation device 110 and the first air purifier 120 It includes a first set-top 170 that is transmitted to).

The first air circulation device 110 discharges the contaminated internal air (A2) to the outside and fresh external air when the internal air quality of the first space 10 measured by the first internal pollution meter 130 is out of the reference range. It serves to ventilate (A1) to flow into the interior.

2 is a schematic cross-sectional view showing the configuration of the first air circulation device (110). As shown, the first air circulation device 110 includes an outer casing 111 coupled to the outer wall of the first space 10, and an inner air (A2) provided in the middle area of the outer casing 111 and discharged to the outside. ) And a natural heat exchanger 113 that allows external air (A1) flowing into the interior to heat exchange naturally due to a temperature difference, a suction fan 115 that forms a suction pressure so that the external air (A1) flows into the room, A discharge fan 116 that forms a discharge pressure so that the internal air (A2) is discharged to the outside, and the external air (A1) is disposed on the suction path of the external air (A1) to exchange heat with the refrigerant to prevent the external air (A1). It is provided between the forced heat exchanger 117 and the forced heat exchanger 117 and the natural heat exchanger 113 to control the temperature to be similar to the temperature of the internal air (A2). It includes an air filter unit 118 to filter.

Here, the external air denoted by A1 is external air before heat exchange, and A1' denotes external air that is heat-exchanged through any one of the natural heat exchanger 113 and the forced heat exchanger 117 and the temperature is controlled. The internal air indicated by A2 is internal air before heat exchange, and the internal air indicated by A2′ means internal air whose temperature is controlled by heat exchange with external air (A1) through the natural heat exchanger (113).

The outer casing 111 is coupled to the outer wall, and forms a path through which the outer air A1 and the inner air A2 move. The outer suction duct 111a and the outer discharge duct 111b are provided on the side of the outer casing 111 in contact with the outer wall, and the inner discharge duct 111c and the inner suction duct 111d are provided on the side of the outer casing 111 in contact with the interior. Each is provided.

External air (A1) is sucked through the external suction duct (111a), and internal air (A2') is discharged to the outside through the external discharge duct (111b). The internal discharge duct 111c discharges the temperature-controlled external air A'into the room, and the internal suction duct 111d sucks the internal air A2.

Inside the outer casing 111, a vertical partition wall 112 and a horizontal partition wall 112a forming a path through which the external air A1 and the internal air A2 are moved are respectively provided. The vertical partition wall 112 is provided in a vertical direction inside the outer casing 111 to form an air flow path left and right. The horizontal partition wall 112a is formed in a horizontal direction so that the paths of the external air A1 and the internal air A2 are switched. The external air (A1) and the internal air (A2) are moved in independent paths by the vertical partition wall 112 and the horizontal partition wall 112a.

The natural heat exchanger 113 is provided in a region where the vertical partition wall 112 and the horizontal partition wall 112a meet so that the external air (A1) and the internal air (A2) naturally heat exchange with each other due to a temperature difference. The natural heat exchanger 113 is provided inside the heat exchange casing 114 supported by the vertical partition wall 112 and the horizontal partition wall 112a.

The heat exchange casing 114 is provided with an external air inlet 114a, an external air outlet 114b, an internal air intake 114c, and an internal air outlet 114d, respectively. The outside air inlet 114a sucks the external air (A1) introduced through the external suction duct 111a into the inside of the natural heat exchanger 113, and the outside air outlet 114b passes through the natural heat exchanger 113 to exchange natural heat. This completed external air (A1') is discharged.

The internal air inlet 114c flows the internal air (A2) sucked through the internal suction duct 111d toward the natural heat exchanger 113, and the internal air outlet 114d is the internal heat exchanger completed inside the natural heat exchanger 113. Exhaust air (A2').

The natural heat exchanger 113 is provided in a form in which a plurality of metal plates having a high heat transfer coefficient are stacked on each other in a horizontal direction and a vertical direction. Inside the natural heat exchanger 113, a flow path (not shown) through which the external air A1 and the internal air A2 are moved is formed so as not to overlap each other. The internal air (A2) and the external air (A1) move inside the natural heat exchanger 113, and heat is conducted due to a temperature difference between them and heat exchange is performed.

In the natural heat exchanger 113, when the temperature difference between the internal air (A2) and the external air (A1) is not large, the internal air (A2) and the external air (A1) exchange heat due to the temperature difference between the internal air (A2) and the external air (A1). It is used to reduce losses.

By the use of the natural heat exchanger 113, the external air (A1) is exchanged with the internal air (A2), the temperature rises or falls, and is discharged to the room, and the forced heat exchanger (117) is used to control the temperature of the external air (A1). ) Has the advantage of reducing the power usage cost required to use.

The suction fan 115 and the discharge fan 116 are provided on the inner suction duct 111d and the outer suction duct 111a, respectively, to provide pressure and internal air A2 to be sucked into the outside air (A1). Apply pressure that can be discharged to the outside. As the suction fan 115 and the discharge fan 116, various known types of fans may be used.

The forced heat exchanger 117 is provided between the external suction duct 111a and the natural heat exchanger 113 to forcibly adjust the temperature of the external air A1 by heat exchange with the refrigerant. The forced heat exchanger 117 is to compensate for the heat loss that occurs when the external air (A1) flows into the interior without temperature control when the temperature difference between the internal air (A2) and the external air (A1) is large, such as in summer or winter. Used.

The forced heat exchanger 117 allows the refrigerant to exchange heat with the external air A1 through a refrigeration cycle using the refrigerant to increase or decrease the temperature of the external air A1. The forced heat exchanger 117 is used in combination with the outdoor unit 117a. The forced heat exchanger 117 allows the temperature of the external air A1 to be adjusted to a temperature set by a control signal from the central control unit 400.

The air filter unit 118 is provided between the forced heat exchanger 117 and the natural heat exchanger 113 to remove relatively large contaminants contained in the external air A1 sucked through the external suction duct 111a. do. The air filter unit 118 may be provided with a pre-filter, a HEPA filter, a deodorization filter, or the like. The pre-filter filters out relatively large foreign matter, and the HEPA filter filters out fine dust. The deodorizing filter filters out odors from outside.

When the first air circulation device 110 is driven by a control signal from the central control unit 400, power is supplied to the suction fan 115 and the discharge fan 116 to rotate. The rotational speeds of the suction fan 115 and the discharge fan 116 are determined in consideration of external air quality and space usage.

When the suction fan 115 and the discharge fan 116 are driven, the external air A1 is sucked into the external suction duct 111a and the internal air A2 is sucked through the internal suction duct 111d. The external air (A1) is introduced into the external air inlet 114a of the heat exchange casing 114 through the forced heat exchanger 117 and the air filter unit 118.

The internal air (A2) is introduced into the natural heat exchanger (113) through the internal air intake (114c) of the heat exchange casing (114). Inside the natural heat exchanger 113, the external air (A1) and the internal air (A2) are moved in a direction orthogonal to each other, and heat exchange is performed, and the external air (A1') is the external air outlet (114b) and the internal exhaust duct (111c). ) Through the room. The internal air (A2') is discharged to the outside through the internal air outlet 114d and the external exhaust duct 111b.

At this time, the forced heat exchanger 117 provided in the movement path of the external air A1 is selectively driven.

The first air purifier 120 filters contaminants contained in the internal air A2 when circulating the internal air A2. The air filter unit 118 described above filters foreign substances having relatively large particles included in the external air A1 introduced from the outside, and the first air purifier 120 filters finer foreign substances.

When the external air quality measured by the external pollution meter 200 meets the reference range, the first air purifier 120 is not driven and when the external air quality does not meet the reference range, after passing through the air filter unit 118 The first air purifier 120 is driven again to filter out foreign substances in the external air A1.

The first air purifier 120 is a pre-filter that removes large-sized fine dust, a complex filter that removes yellow dust and mold bacteria, a HEPA filter that removes even ultra-fine dust, and deodorization to remove volatile organic compounds, toluene, and odors. Filters and the like are combined to keep the internal air clean.

A blower (not shown) is provided inside the first air purifier 120, and a driving speed of the blower (not shown) is adjusted by receiving a control signal from the central control unit 400 through the first set-top 170.

The first internal pollution measuring device 130 measures the air pollution degree of the internal space of the first space 10 and transmits it to the first set-top 170, and the first internal temperature measuring device 135 is inside the first space 10. The temperature is measured and transmitted to the first set-top 170.

The first internal pollution meter 130 measures indoor fine dust concentration, indoor carbon dioxide concentration, and indoor volatile organic compound concentration. In addition, the first internal pollution meter 130 may measure the concentration of radon and formaldehyde, which are carcinogens.

The first space use detection unit 140 determines whether the first space 10 is currently being used by interworking with the Bluetooth low power network 300. Although the use time table DB 420 is stored in the storage unit 410 of the central control unit 400, a difference from the actual use time of each space may occur.

For example, in the case of a school, there are cases in which the space is empty due to the Korean language class hours in the usage timetable (class timetable), but actually physical education or fire fighting training is performed.

Accordingly, the first space use detection unit 140 actually detects whether or not the space is used and transmits the detection result to the central control unit 400.

The first space use detection unit 140 may determine the number of residents currently in the space through the number of portable terminals, that is, smartphones connected to the Bluetooth low power network 300 installed in each space. The first space use detection unit 140 is residing in each space, and compared with the previously registered residents, when a smartphone of 2/3 or more residents is connected to the Bluetooth low power network 300, the current space is deemed to be in use. It is determined that the space is not used if less than 2/3 of the residents are connected.

Meanwhile, the first air circulation device 110 and the first air purifier 120 are provided with a first communication unit 121 and a second communication unit 131 communicating with the first set-top 170, respectively. The first communication unit 121 and the second communication unit 131 are connected to the first air circulation device 110 and the first air purifier 120 by wire to implement an RS232 communication system. Further, the first communication unit 121 and the second communication unit 131 perform wireless communication through the first set-top 170 and the RF module. At this time, wireless communication with the first set-top 170 uses the Bluetooth low power network 300.

The first set-top 170 is provided for each space and transmits the information collected by the first unit air management unit 100 to the central control unit 400, receives a control signal transmitted from the central control unit 400, and receives the first unit. It is delivered to the first air circulation device 110 and the first air purifier 120 of the air management unit 100.

The first set-top 170 is provided with a third communication unit 171 to transmit and receive information to and from the central control unit 400. The third communication unit 171 transmits and receives information through wireless communication with the central control unit 400.

The external pollution meter 200 is provided outdoors to measure the pollution degree of external air and transmits it to the central control unit 400. The external pollution meter 200 may be connected to the central control unit 400 by wire or may transmit external air quality through wireless communication.

An external temperature measuring device 210 for sensing the external temperature is provided at one side of the external pollution measuring device 200 to transmit the external temperature to the central control unit 400.

3 is a block diagram schematically showing the components of the smart public facilities air quality management system 1 of the present invention.

The central control unit 400 is based on the information transmitted from the set-tops 170, 170a, 170b of a plurality of unit air management units 100, 100a, 100b provided in each space, each unit air management unit 100, 100a, 100b By controlling whether the air circulation devices 110, 110a, 110b and the air purifiers 120, 120a, 120b are driven, the internal air quality of each space is controlled to be managed within the standard range.

The central control unit 400 controls whether to operate in the air circulation mode or the ventilation mode based on the internal air quality measured by the internal pollution measuring devices 130, 130a, 130b of each unit air management unit 100, 100a, 100b. When operating in the air circulation mode, the air circulation devices 110, 110a, and 110b are not driven, and only the air purifiers 120, 120a, and 120b are driven.

When operating in the ventilation mode, the central control unit 400 determines whether to drive only the air circulation devices 110, 110a, 110b or only the air purifiers 120, 120a, 120b based on the external air quality measured by the external pollution meter 200. Decide. In addition, when the central control unit 400 is driven in the ventilation mode, it determines whether the current space is used and drives the air circulation devices 110, 110a, 110b so as not to interfere with the class.

In addition, the central control unit 400 compares the external temperature measured by the external temperature measuring instrument 210 with the internal temperature measured by the internal temperature measuring instrument, and when the temperature difference between the two is less than a preset threshold, only the natural heat exchanger 113 When the temperature difference between the two is greater than the threshold value, the forced heat exchanger 117 is driven.

The central control unit 400 reviews various driving conditions and provides control signals for whether the air circulation devices 110, 110a, and 110b are driven and the rotational speeds of the suction fan 115 and the discharge fan 116, respectively. , 170b). In addition, the central control unit 400 controls whether the air purifiers 120, 120a, and 120b are driven and the rotational speed of the blowing fan (not shown).

In addition, the central control unit 400 displays the internal air quality of each of the entire spaces and the current external air quality on the central display unit 600 so that the public facility manager can check it with the naked eye. In addition, in some cases, the internal air quality and external air quality of each class (space) are transmitted to the manager terminal 500, such as a manager, for example, a smartphone of the classroom teacher of each class.

An internal air quality management process for each space of the smart public facility air quality management system 1 according to the present invention having such a configuration will be described with reference to FIGS. 1 to 5.

For convenience of explanation, the process of managing the internal air quality of the first space 10 will be described as an example.

As shown in FIG. 4, the first internal pollution meter 130 of the first space 10 measures the degree of pollution of the internal air (S110).

The first internal pollution measuring device 130 transmits the measured internal air quality to the central control unit 400. The central control unit 400 determines the internal air quality based on the received internal pollution level (S120).

The central control unit 400 may divide the internal air quality into five stages based on the concentration of fine dust, the concentration of carbon dioxide, and the concentration of radon and formaldehyde measured by the first internal pollution meter 130. The central control unit 400 may divide the internal air quality into very good (S131), good (S133), normal (S135), bad (S137), and very bad (S139).

When the central control unit 400 is very good (S131), the power of the first air purifier 120 is turned off, and the first air circulation device 110 is also turned off (S141). When the internal air quality is good (S133), the central control unit 400 transmits a control signal to the first set-top 170 so that the blower (not shown) of the first air purifier 120 is driven at a low speed. The first set-top 170 transmits a control signal to the first air purifier 120, and the first air purifier 120 is driven at a low speed (S143). When the internal air quality is normal (S135), the central control unit 400 applies a control signal so that the first air purifier 120 is driven at a medium speed (S145).

When the internal air quality is normal, good, or very good, the first air circulation device 110 is operated in an internal circulation mode in which only the first air purifier 120 is driven in an off state. On the other hand, when the internal air quality is poor (S137) and very bad (S139), the central control unit 400 applies a control signal in the ventilation mode.

5 is a flowchart showing a control process of the central control unit 400 in the ventilation mode (S147). When entering the ventilation mode, the central control unit 400 checks whether the first space 10 is currently in use by referring to the use timetable DB stored in the storage unit 410 (S150). At the same time, the detection signal of the first space use detection unit 140 is received.

The first space use detection unit 140 transmits the number of mobile terminals connected to the Bluetooth low power network 300 in the first space 10 to the central control unit 400, and the central control unit 400 transmits the number of mobile terminals connected to the Bluetooth low power network 300 in the first space 10. Compare the number of previously registered residents in 10) with the number of connected mobile terminals to determine whether or not the space is used.

If more than two-thirds of the number of residents is connected, it is determined that the space is being used, and the intake fan 115 and the discharge fan 116 of the first air circulation device 110 are driven at a low speed to perform the activities of the residents ( Class or work) is not disturbed (S153).

On the other hand, if more than 2/3 of the number of residents is not connected, it is judged that the space is not used (break time or outdoor class), and the suction fan 115 and the discharge fan 116 are driven at high speed to quickly ventilate. Let it be.

At this time, the central control unit 400 determines whether the external air quality transmitted from the external pollution meter 200 is within a reference range. That is, it is determined whether the fine dust concentration and the ultra fine dust concentration of the external air are within a preset reference range (S160).

When the external air quality is within the reference range, the first air purifier 120 inside the first space 10 is not driven (S171), and when the external air quality is within the reference range, the first air purifier 120 is also driven.

In addition, the central control unit 400 obtains a difference between the external temperature transmitted from the external temperature measuring device 210 and the internal temperature measured by the first internal temperature measuring device 135 and determines whether the difference is greater than a preset threshold ( S190).

When the temperature difference is less than the critical value, the external air (A1) is introduced into the interior via only the natural heat exchanger 113 (S191), and when the temperature difference is greater than the critical value, the external air (A1) is forced to heat exchanger 117. After passing through the first time, it is introduced into the room after passing through the natural heat exchanger 113 for the second time.

In addition, the central control unit 400 differentially adjusts the ventilation time according to the degree of poor external air quality.

The central control unit 400 drives the suction fan 115 and the discharge fan 116 at low speed when the space is being used so as not to interfere with the activities of the residents, and when the space is not used (break time), the By driving the suction fan 115 and the discharge fan 116 to allow rapid ventilation.

The central control unit 400 continuously receives the internal air quality from the first internal pollution meter 130 while the ventilation mode is in progress, and when the internal air quality falls within the reference range, the first air purifying device 110 stops driving to ventilate. The mode is stopped and the internal circulation mode proceeds.

The internal air quality of a plurality of spaces of public facilities is intelligently managed by the management process of the central control unit 400. Accordingly, the second space 10a is independently managed, such as only the ventilation mode is executed, and the third space 10b is only the internal circulation mode.

As described above, in the smart public facility air quality management system according to the present invention, the central control unit applies a control signal to the air circulator and air purifier in each space based on the internal air quality transmitted from the internal pollution meter of each space. Mode and ventilation mode are executed automatically.

As a result, when indoor air pollution is severe, fresh outside air is supplied, so that the internal air quality can always be managed at a constant level.

In addition, the smart public facility air quality management system according to the present invention determines whether space is used in each space in connection with the network network according to the characteristics of public facilities, so that it does not interfere with class or work, when in ventilation mode during class or working hours. The suction fan and discharge fan are driven at low speed, and the suction fan and discharge fan are driven at high speed during break.

In addition, the smart public facility air quality management system according to the present invention is provided with a natural heat exchanger and a forced heat exchanger inside the air circulation device, so that heat loss due to the difference between the external air temperature and the internal air temperature can be actively reduced.

Although expressed as an air purifier in the above, a product provided with a filter for air purification can be regarded as an air purifier referred to in the present invention, even though it is not necessarily classified under the name of an air purifier. For example, it is also possible to implement the present invention by replacing a cooling and heating apparatus provided with a member for adsorbing fine dust with an air purifier.

The technical idea of the present invention was examined through the above several embodiments.

It is apparent that those of ordinary skill in the art to which the present invention pertains can variously modify or change the above-described embodiments from the description of the present invention. In addition, even if not explicitly shown or described, a person of ordinary skill in the technical field to which the present invention pertains can make various modifications including the technical idea according to the present invention from the description of the present invention. Is obvious, which still belongs to the scope of the present invention. The above embodiments described with reference to the accompanying drawings have been described for the purpose of describing the present invention, and the scope of the present invention is not limited to these embodiments.

1: Smart public facilities air quality management system 10,10a,10b: Space
13: front door 15: rear door
20: corridor 100: first unit air management department
100a: second unit air management unit 100b: third unit air management unit
110: first air circulation device 111: outer casing
111a: external suction duct 111b: external discharge duct
111c: internal discharge duct 111d: internal suction duct
112: vertical bulkhead 112a: horizontal bulkhead
113: natural heat exchanger 114: heat exchange casing
114a: outdoor air intake 114b: outdoor air outlet
114c: air inlet 114d: air outlet
115: suction fan 116: discharge fan
117: forced heat exchanger 117a: outdoor unit
118: air filter unit 120: first air purifier
130: first internal pollution meter 135: first internal temperature meter
140: first space use detection unit 121: first communication unit
131: second communication unit 170: first set-top
200: external pollution meter 210: external temperature meter
300: BLE network network 400: central control unit
410: storage unit 420: use timetable DB
500: administrator terminal 600: central display
A1: External air
A2: Internal air

Claims (5)

In a public facility air quality smart management system that integrates and manages internal air quality of a plurality of spaces,
A plurality of unit air management units (100, 100a, 100b) that are individually installed in each space and have internal pollution measuring devices (130, 130a, 130b);
An external pollution measuring device 200 installed outdoors to measure the pollution degree of external air;
A Bluetooth low-power network 300 provided for each space;
Based on the internal air quality measured by the internal pollution meter (130, 130a, 130b) and the external air quality measured by the external pollution meter (200), a central control unit that controls the individual operation of each unit air management unit (100, 100a, 100b) ( 400),

Each of the plurality of unit air management units 100, 100a, 100b,
An air circulation device (110, 110a, 110b) coupled to the outer wall of the space to ventilate internal air and external air;
An air purifier (120, 120a, 120b) provided on one side of the air circulation device (110, 110a, 110b) to purify the internal air;
A space use detection unit (140, 140a, 140b) determining whether or not a space is used by using the Bluetooth low power network 300;
The internal air quality received from the internal pollution meter (130, 130a, 130b) and the space usage determined by the space use detection unit (140, 140a, 140b) are transmitted to the central control unit 400, and from the central control unit 400 The received driving information of the air circulation device (110, 110a, 110b) and the driving information of the air purifier (120, 120a, 120b) are transferred to the air circulation device (110, 110a, 110b) and the air purifier (120, 120a, 120b). Including the set-top (170, 170a, 170b) to transmit,

The air circulation device (110, 110a, 110b),
An external suction duct 111a provided on the outer wall side of the space to suck in external air and an external discharge duct 111b for discharging internal air to the outside, and an internal discharge provided on the inner wall side of the space to discharge external air to the inside An outer casing 111 provided with a duct 111c and an inner suction duct 111d for inhaling internal air, respectively,
A suction fan 115 provided on the side of the internal discharge duct 111c to form a suction pressure of external air;
A discharge fan 116 provided on the side of the external discharge duct 111b to form a discharge pressure of the internal air;
A natural heat exchanger (113) provided in the center area of the outer casing (111) to allow internal air to be discharged to the outside and external air to be introduced into heat exchange within a set temperature difference;
A forced heat exchanger (117) provided between the external suction duct (111a) and the natural heat exchanger (113) for exchanging external air flowing into the natural heat exchanger (113) with a refrigerant;
And an air filter unit 118 provided between the forced heat exchanger 117 and the natural heat exchanger 113 to remove foreign substances from the external air flowing into the natural heat exchanger 113,

An internal temperature measuring device 135 for measuring the internal temperature is provided in the interior of each space, and an external temperature measuring device 210 is provided on one side of the external pollution measuring device 200 to measure the external temperature,
The central control unit 400 includes an air circulation mode and the air circulation device 110, 110a, 110b using the air purifier 120, 120a, 120b based on the internal air quality measured by the internal pollution meter (130, 130a, 130b) Select the ventilation mode using and apply a control signal,
When the central control unit 400 selects the ventilation mode, the suction fan 115 of the air circulation device 110, 110a, 110b based on the space use detected by the space use detection unit 140, 140a, 140b And adjusting the driving speed of the exhaust fan 116,
In the ventilation mode, selectively driving the natural heat exchanger 113 and the forced heat exchanger 117 in response to a temperature difference between the external air and the internal air,
The natural heat exchanger 113 is formed so that the flow path of the external air and the flow path of the internal air do not overlap each other,
The external air and the internal air move inside the natural heat exchanger 113 to conduct heat exchange due to a temperature difference between them, thereby performing heat exchange,

The space use detection units 140, 140a, 140b detect the number of smartphones in the space connected to the Bluetooth low power network 300 to determine whether or not the space is used,
If more than 2/3 of the number of residents is detected, it is determined that the space is being used,

The central control unit 400 cleans and ventilates indoor air through a combination control of the air purifiers 120, 120a, 120b and the air circulation devices 110, 110a, 110b,
In the ventilation mode, the driving speed of the suction fan 115 and the exhaust fan 116 depending on whether or not the space is used, whether the air purifier 120, 120a, 120b is used according to ventilation, and the forced heat exchange according to a set temperature difference Smart air quality management system for public facilities, characterized in that continuously controlling whether or not the device 117 is used. delete delete delete As a public facility air quality smart management method using the public facility air quality smart management system of claim 1,
Measuring the internal air quality of each space;
Determining the internal air quality based on the measured internal air quality;
Selecting an internal circulation mode and a ventilation mode according to the determined level of internal air quality;
In the case of the internal circulation mode, differentially controlling the driving speed of the blowing fan of the air purifier according to the internal air quality grade;
In the above ventilation mode, it is determined whether the space is used, and if the space is in use, the suction fan and the discharge fan of the air circulation device are driven at low speed. Driving;
Comparing the external air quality with a preset reference range and not driving the air purifier when the reference range is satisfied, and driving the air purifier when the reference range is not satisfied;
Comprising the step of comparing the temperature of the external air and the temperature of the internal air and driving the forced heat exchanger when the difference between the two is greater than a preset threshold; and
Purifying and ventilating indoor air through a combination control of the air purifier and the air circulation device,
In the ventilation mode, the driving speed of the suction fan and the exhaust fan according to whether the space is used, whether the air purifier is used according to the ventilation, and whether or not the forced heat exchanger is used according to a set temperature difference is continuously controlled. Smart management method for air quality in public facilities.

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