KR20210026268A - Revised Ventilation System Combining Air Cleaner Using Plate Type Heat Exchanger and Driving method thereof - Google Patents

Abstract

According to one embodiment of the present invention, an improved concurrent air purification and ventilation system using a planar total heat exchanger comprises: a ventilation device which is operated by multiple operating modes, controls an exhaust amount passing a total heat exchanger and a path for ventilation of a bypass to be same with or larger than a supply amount according to differences between indoor and outdoor temperature and humidity, concentration of indoor fine dust, and concentration of indoor carbon oxide, and selectively and simultaneously performs ventilation and air purification; and a control unit operating the system by one mode among the multiple operating modes based on changes of the indoor and outdoor temperature and humidity, the concentration of the indoor fine dust, and the concentration of the indoor carbon oxide.

Description

TECHNICAL FIELD [Revised Ventilation System Combining Air Cleaner Using Plate Type Heat Exchanger and Driving method thereof]

The present invention relates to an improved air-cleaning parallel ventilation system using a plate-type total heat exchanger and a method of operating the same.

In general homes and offices, air conditioning and heating systems are installed to perform indoor cooling and heating according to seasonal changes, and these cooling and heating devices are air conditioners that perform cooling and heating by cooling and heating the indoor air. , Boilers, etc.

Indoors such as general homes and offices equipped with such a cooling and heating system are kept in a sealed state to improve cooling and heating efficiency, and the air pollution degree increases after a certain period of time in the sealed indoor space. Is generated or foreign substances such as dust become floating. Therefore, in order to remove such odors and dust from the room, indoor air is ventilated at regular intervals. Ventilation to exhaust contaminated indoor air to the outside more quickly while maintaining the indoor temperature, and to supply fresh outdoor air to the room. The system is used.

Conventional ventilation systems include: a first air supply room through which outdoor air is introduced, a second air supply room supplying outdoor air through the first air supply room to the room, a first exhaust room through which indoor air is introduced, and the first exhaust air. Heat exchange is performed between a second exhaust chamber that discharges indoor air through the chamber to the outside, indoor air flowing from the first exhaust chamber to the second exhaust chamber, and outdoor air flowing from the first supply chamber to the second supply chamber. A total heat exchanger, an air supply blower for forcibly sucking the outdoor air into the room, and an exhaust blower for forcibly discharging the indoor air to the outside are provided.

Recently, a ventilation system with an air cleaning function that filters foreign substances contained in the indoor air while circulating indoor air in such a ventilation system has been developed.

Korean Patent Registration No. 10-1149815 (2012.05.18)

An object to be solved by the present invention is to provide an improved air-cleaning parallel ventilation system using a plate-type total heat exchanger capable of simultaneously and/or selectively performing ventilation and air cleaning, and an operation method thereof.

The improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention for solving the above problems is operated in a plurality of operation modes, and according to the indoor/outdoor temperature/humidity difference, indoor fine dust concentration, and indoor carbon dioxide concentration. A ventilation device that controls an amount of exhaust passing through the total heat exchanger and the bypass ventilation path to be equal to or greater than the amount of supply air, and selectively and simultaneously performs ventilation and air cleaning; And a control unit operating in one of the plurality of operation modes based on the indoor/outdoor temperature/humidity change, the indoor fine dust concentration, and the indoor carbon dioxide concentration.

When the improved air cleaning parallel ventilation system and its operation method using a plate-type total heat exchanger according to an embodiment of the present invention are used, there is an advantage that it is possible to effectively remove fine dust in the room by simultaneously performing ventilation and air cleaning.

In addition, there is an advantage of minimizing the possibility of condensation occurring in the total heat exchanger in winter when the improved air cleaning parallel ventilation system and its operation method using a plate-type total heat exchanger according to an embodiment of the present invention are used.

In addition, by using the improved air-cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention, it is possible to maximize the airtightness performance of the ventilation system (minimization of the leakage rate, that is, the rate of re-inflow of polluted air). There is this.

In the current standard, if the total leakage rate of the ventilation system including the total heat exchanger exceeds 10%, it is a reason for disqualification as a ventilation system.

In addition, if the improved air cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention is used, the discomfort caused by the inflow of cold air even after total heat exchange that occurs when the outside temperature is low, such as in cold weather. There is an advantage that it is possible to minimize

For example, in winter, the temperature increases compared to the conventional method and supply air is introduced, and in the summer, the temperature is lower than that of the conventional method and supply air is introduced, which helps to improve comfort.

1 is an exemplary diagram of an improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention.
2 is a block diagram showing a detailed configuration of the ventilation system shown in FIG. 1.
3 is an exemplary view of the total heat exchanger shown in FIG. 2.
4 is a side cross-sectional view of FIG. 3.
5A is a flowchart briefly explaining an operation method of an improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention.
5B is a flowchart illustrating the operation method illustrated in FIG. 5A in more detail.
5C is an exemplary view for explaining in more detail the operation mode determination process shown in FIG. 5B.
6 is an exemplary view showing air flow according to the ventilation mode (supply air) shown in FIG. 5A.
7 is an exemplary view showing air flow according to the ventilation mode (exhaust) shown in FIG. 5A.
8 is an exemplary view showing air flow according to the air cleaning mode shown in FIG. 5A.
9 is an exemplary view showing air flow according to the ventilation + air cleaning mode (supply air) shown in FIG. 5A.
10 is an exemplary view showing air flow according to the ventilation + air cleaning mode (exhaust) shown in FIG. 5A.
11 is an exemplary view showing the air flow according to the ventilation + air cleaning mode (air clean circulation) shown in FIG. 5A.
12 is an exemplary view showing air flow according to the bypass ventilation mode (supply air) shown in FIG. 5A.
13 is an exemplary view showing air flow according to the bypass ventilation mode (exhaust) shown in FIG. 5A.
14 is an exemplary view showing air flow according to the bypass ventilation + air cleaning mode (supply air) shown in FIG. 5A.
15 is an exemplary view showing air flow according to the bypass ventilation + air cleaning mode (exhaust) shown in FIG. 5A.
FIG. 16 is an exemplary view showing air flow according to the bypass ventilation + air cleaning mode (air clean circulation) shown in FIG. 5A.
17 is an exemplary view showing air flow according to the drying mode of the total heat exchanger shown in FIG. 5A.
FIG. 18 is an exemplary view for explaining the principle of minimizing the occurrence of seasonal (winter, summer) condensation in the total heat exchanger that may occur when performing in the ventilation (total heat exchange ventilation) mode shown in FIG. 5A.
Figure 19 illustrates the ventilation and air cleaning mode shown in Figure 5a, that is, the principle of minimizing the leakage rate (exhausted polluted air re-inflow rate) in the total heat exchanger by making the exhaust amount of the air passing through the total heat exchanger larger than the supply air volume. It is a flow chart.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" with another part, this includes not only "directly connected" but also "electrically connected" with another element interposed therebetween. . In addition, when a part "includes" a certain component, it means that other components may be further included, and one or more other features, not excluding other components, unless specifically stated to the contrary. It is to be understood that it does not preclude the presence or addition of any number, step, action, component, part, or combination thereof.

Hereinafter, based on the accompanying drawings, an improved air-cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention and an operation method thereof will be described in more detail.

1 is an exemplary view of an improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention, and FIG. 2 is a configuration diagram showing a detailed configuration of the ventilation system shown in FIG. 1, and FIG. 3 is It is an exemplary view of the total heat exchanger shown in FIG. 2, and FIG. 4 is a side cross-sectional view of FIG. 3.

As shown in FIG. 1, the improved air cleaning parallel ventilation system 100 using a plate-type total heat exchanger according to an embodiment of the present invention includes a sensing unit 201, a ventilation device 200, and a control unit 300. .

The sensing unit 201 is installed in the first exhaust chamber of the ventilation device 200 and detects the temperature and humidity of the indoor air introduced into the first exhaust chamber. And an outdoor air temperature/humidity sensor T1 installed in the air chamber to detect the temperature and humidity of outdoor air introduced into the first air supply chamber.

In addition, the sensing unit 201 may further include a sensing sensor that detects the concentration of fine dust in the indoor air and indoor carbon dioxide.

In addition, the sensing unit 201 includes air flow rate detection sensors S1 and S2 that detect the amount of air recirculated for air purification and exhaust from the inside of the second exhaust chamber provided in the ventilation system to be described later. .

The air flow rate detection sensor S1 may be provided in an exhaust port of the second exhaust chamber, and the air flow rate detection sensor S2 may be provided in an air clean passage connected to the second exhaust chamber.

Meanwhile, the ventilation device 200 is operated in a plurality of operation modes, and the amount of exhaust passing through the total heat exchanger is controlled to be equal to or greater than the amount of air supplied according to indoor and outdoor temperature/humidity changes, indoor fine dust and carbon dioxide concentration. After that, the ventilation function and the air cleaning function are selectively and/or simultaneously performed.

The ventilation device 200 operates in any one of ① ventilation mode, ② air cleaning mode, ③ ventilation + air cleaning mode, ④ bypass ventilation mode, ⑤ bypass ventilation + air cleaning mode, and ⑥ total heat exchanger drying mode. Can be.

The ① ventilation mode is a mode in which the indoor air from the indoor side is discharged to the outdoor side or the outdoor air from the outdoor side is introduced into the room, and is composed of air supply and exhaust.

The ② air cleaning mode is a mode for supplying the filtered indoor air back to the indoor side after filtering indoor air through the ventilation filter of the ventilation system, and may be a mode operated to cope with the occurrence of condensation in the total heat exchanger, such as during the rainy season.

③ Ventilation + air cleaning mode is a mode for simultaneously performing ventilation (supply and exhaust) and filtering of indoor air, effectively removing fine dust (pollutants) from indoor air, minimizing the possibility of condensation in the total heat exchanger, and leakage rate ( It may be a mode capable of minimizing the re-inflow rate of exhaust polluted air and minimizing discomfort according to the supply air temperature. In this case, the amount of air passing through the total heat exchanger is greater than the amount of air supplied.

The ④ bypass ventilation mode is a mode to bypass the total heat exchanger when inflow of outdoor air from the outdoor side and when discharge of indoor air from the indoor side, inflow into the room, and discharge it to the outside. Season when the difference between the indoor temperature and the outdoor temperature is small, for example, It may be a mode operated in spring and autumn.

The ⑤ bypass ventilation + air cleaning mode is a mode in which a mode for filtering by bypassing the total heat exchanger when re-inflow of indoor air for air cleaning is added to the bypass mode. Pollutants) can be a mode for effective removal.

The ⑥ total heat exchanger drying mode may be a mode in which the total heat exchanger is dried using indoor air after ventilation (supply and exhaust) is stopped.

A more detailed description of each operation mode described above will be described later.

Next, the control unit 300 operates a mode of the ventilation system to operate in one of the plurality of operation modes based on the difference between the indoor temperature/humidity and the outdoor temperature/humidity, the indoor fine dust concentration, and the indoor carbon dioxide concentration. Control.

More specifically, referring to FIG. 2, the ventilation device 200 includes an outdoor air zone 210, a ventilation zone 220, an exhaust zone 230, an air supply zone 240, an air clean ventilation zone 250, and a total heat exchanger. It includes (1).

The outside air zone 210 is a zone that sucks outdoor air and supplies it to the total heat exchanger 1, and may be a zone divided into two outside air passages through a partition wall. The first external air passage pipe (OA path 1) is composed of a bypath ventilation damper (8) and a bypath ventilation filter (4), and the second external air passage pipe (OA path 2) is an external air damper (9) and an external air filter ( 5) is installed and connected to the first side of the total heat exchanger (1) to be described later.

Next, the ventilation zone 220 is a zone in which indoor air is sucked and supplied to the total heat exchanger 1, and may be a zone divided into two ventilation passages through a partition wall. The first ventilation passage pipe (RA path 1) is composed of a bypath ventilation damper 12 and a bypath ventilation filter 6, and the second ventilation passage pipe (RA path 2) is a ventilation damper 13 and a ventilation filter ( 7) is installed and connected to the second side of the total heat exchanger (1) to be described later.

Next, the exhaust zone 230 is provided with an exhaust damper 10 and an exhaust fan 2, and the exhaust zone 230 is an exhaust path 18 for bypass ventilation and a third side of the total heat exchanger 1 to be described later. ) And are connected respectively.

The exhaust damper 10 guides the indoor air that has passed through the total heat exchanger 1 to move to the exhaust port, or bypasses the total heat exchanger 1 to move the indoor air moved to the exhaust path for bypass ventilation to the exhaust port. Guide.

Specifically, when the temperature difference between the outdoor air temperature measured by the outdoor temperature sensor and the indoor air measured by the indoor temperature sensor is large, the indoor air is controlled to pass through the total heat exchanger (1), and the temperature of the outdoor air and the temperature of the indoor air When the difference is small, the indoor air is controlled through the control unit 300 so that it does not pass through the total heat exchanger 1.

In addition, the exhaust damper 10 is closed in the air cleaning mode and opened in the mode including ventilation.

In addition, the exhaust damper 10 and the air vent damper 11 are variable dampers, and perform a function of distributing the amount of exhaust and air cleanliness by adjusting the opening and closing angles of the exhaust damper 10 and the air vent damper 11. .

Next, the air supply zone 240 is an area where outdoor air is blown indoors, in which the air supply fan 3 is installed, the fourth side of the total heat exchanger 1 and the air supply path 17 for bypass ventilation, respectively. Connected.

Next, the air clean ventilation zone 250 includes an air clean ventilation damper 11 connected to the exhaust zone 230 and an air clean ventilation pipe 19 connected to the supply zone 240.

Next, referring to FIG. 3, the total heat exchanger 1 is a structure in which a flat plate 1-2 in which total heat exchange occurs, and a bent plate 1-1 supporting the flat plate are alternately stacked, The bent plate material 1-1 disposed with the flat plate material 1-2 interposed therebetween is disposed so as to intersect at a right angle in each layer.

The air supply path and the exhaust path may be formed by lamination of the flat plate material 1-2 and the bent plate 1-1, and the air supply path and the exhaust path may be air passages orthogonal to each other.

In addition, a heat exchange film (paper film) having excellent heat conduction efficiency may be provided at a boundary portion between the air supply path and the exhaust path.

When power is applied to the exhaust fan 2, contaminated indoor air may be discharged to the outside through the exhaust damper 10. At the same time, as power is applied to the air supply fan 3, the outdoor air filtered from the outside air zone may pass through the air supply path of the total heat exchanger 1 and flow into the room through the air supply zone.

In this case, indoor air and outdoor air passing through the total heat exchanger 1 may be heat-exchanged through a heat exchange membrane. That is, the supplied outdoor air may first heat exchange with the indoor air and then flow into the room, thereby preventing a sudden rise or fall of the indoor temperature.

Meanwhile, the ventilation apparatus 200 of the present invention may include air flow sensors S1 and S2 for detecting the amount of air passing through the exhaust damper 10 and the amount of air passing through the air vent damper 11.

The air flow sensor may sense a flow rate of air using a Karman Vortex method and provide a relative ratio between an exhaust flow amount and a recirculation supply air flow amount for air cleaning to the control unit 300.

The control unit 300 includes an exhaust damper 10 and an air vent damper 11 based on a relative ratio between the exhaust flow amount detected by the air flow sensors S1 and S2 of the ventilation device 200 and the recirculation supply air flow amount for air cleaning. You can also adjust the opening and closing amount of the fan and the air volume of the fan.

In addition, the control unit 300 may set the operation mode based on the indoor air temperature/humidity and the outdoor air temperature/humidity difference, indoor fine dust concentration, and indoor carbon dioxide concentration.

5A is a flowchart briefly explaining an operation method of an improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention.

5B is a flowchart illustrating the operation method shown in FIG. 5A in more detail, and FIG. 5C is an example for explaining in more detail the process of determining the driving method and adjusting the driving route after measuring environmental information for each set time interval shown in FIG. 5B It is a degree.

Referring to Figure 5a, the operation method (S700) of the improved air cleaning parallel ventilation system using a plate-type total heat exchanger according to an embodiment of the present invention, first, the outdoor / indoor temperature / humidity, indoor fine dust concentration, indoor carbon dioxide concentration. Measure (S710).

Thereafter, the control unit 300 sets the operation mode of the ventilation system based on the difference between the indoor temperature/humidity and the outdoor temperature/humidity, the difference between the indoor fine dust and the reference fine dust, and the difference between the indoor carbon dioxide concentration and the reference carbon dioxide concentration (S720). ), and then controls the operation of the ventilation system in the set operation mode (S730).

Here, the operation mode is one of ① ventilation mode, ② air cleaning mode, ③ ventilation + air cleaning mode, ④ bypass ventilation mode, ⑤ bypass ventilation + air cleaning mode, and ⑥ total heat exchanger drying mode when turned off. It can be operated.

The ① ventilation mode is a mode in which the indoor air from the indoor side is discharged to the outdoor side or the outdoor air from the outdoor side is introduced into the room, and is composed of air supply and exhaust.

The ② air cleaning mode is a mode for supplying the filtered indoor air back to the indoor side after filtering indoor air through the ventilation filter of the ventilation system, and may be a mode operated to cope with the occurrence of condensation in the total heat exchanger, such as during the rainy season.

③ Ventilation + air cleaning mode is a mode for simultaneously performing ventilation (supply and exhaust) and filtering of indoor air, effectively removing fine dust (pollutants) from indoor air, minimizing the possibility of condensation in the total heat exchanger, and leakage rate ( It may be a mode capable of minimizing the re-inflow rate of exhaust polluted air and minimizing discomfort according to the supply air temperature. In this case, the amount of air passing through the total heat exchanger is the case where the displacement is larger than the supply air amount.

The ④ bypass ventilation mode is a mode to bypass the total heat exchanger when inflow of outdoor air from the outdoor side and when discharge of indoor air from the indoor side to enter the room and to discharge it to the outdoors, in a season when the difference between the indoor temperature and the outdoor temperature is small, for example, It may be a mode operated in spring and autumn.

The ⑤ bypass ventilation + air cleaning mode is a mode in which a mode for filtering by bypassing the total heat exchanger when re-inflow of indoor air for air cleaning is added to the bypass mode. Pollutants) can be a mode for effective removal.

The ⑥ total heat exchanger drying mode may be a mode in which the total heat exchanger is dried using indoor air after ventilation (supply and exhaust) is stopped.

On the other hand, the operating method of the improved air cleaning parallel ventilation system using the plate-type total heat exchanger according to an embodiment of the present invention is to be operated in more detail first, referring to Figs. 5b and 5c, manual operation control and automatic operation control. I can.

Here, the manual operation control may include a process of selecting an operation mode, selecting an air volume control, and selecting an operation time.

The operation mode may be a mode for selecting any one of a ventilation mode, an air cleaning mode, a ventilation + air cleaning mode, a bypath ventilation mode, and a bypath ventilation + air cleaning mode.

Thereafter, the user can set the intensity of the ventilation air volume and the air clean air volume (strong/medium/weak) in the selected mode, and select the operating time (continuous/timer).

Next, when operated by automatic operation control, the sensing unit measures environmental information. Here, the environmental information may include indoor air temperature/humidity, outdoor air temperature/humidity, indoor fine dust concentration, and indoor carbon dioxide concentration information.

Then, the operation mode is determined based on the environmental information. Here, the operation mode is operated in any one of a total of 16 modes (see FIG. 5C).

The operation mode can be divided in detail according to the intensity of the ventilation air volume (strong/medium/weak) and the air clean air volume (strong/medium/weak).

Thereafter, environmental information is measured for each set time interval, and the operation mode is operated to vary based on the variable environmental information.

Here, the driving operation time may be adjusted continuously or through a timer.

Thereafter, after the automatic operation control and the manual operation control are ended, the total heat exchanger drying mode may be operated.

Here, when the immediately preceding ventilation operation mode includes the total heat exchange ventilation mode, the total heat exchange element drying mode is ON and OFF for a set time, and if the total heat exchange ventilation mode is not included in the previous ventilation operation mode, the total heat exchanger drying mode Becomes OFF.

Hereinafter, with reference to FIGS. 6 to 17, the operation state of the detailed configuration according to each operation mode of the ventilation system and the air traveling direction thereof will be described in more detail.

6 is an exemplary view showing air flow according to the ventilation mode (supply air) shown in FIG. 5A, and FIG. 7 is an exemplary view showing the air flow according to the ventilation mode (exhaust) shown in FIG. 5A.

First, referring to FIG. 6, in the ventilation mode (supply) of the ventilation device 200, the control unit 300 blocks the damper 8 of the outdoor air zone, the damper 12 of the ventilation zone, and the damper 11 of the ventilation zone. After that, the air supply fan (3) of the air supply area is operated. After passing through the damper (9) and filter (5), the outdoor air is transferred to the air supply area through the air supply pass of the total heat exchanger, It may be a mode that operates to be supplied to.

Here, the control unit controls the amount of air supplied to the room by adjusting the air volume of the air supply fan 3 in the air supply area.

Next, referring to FIG. 7, in the ventilation mode (exhaust) of the ventilation device 200, the control unit 300 controls the damper 8 of the outdoor air zone, the damper 12 of the ventilation zone, and the damper 11 of the ventilation zone. After shutting off, the exhaust fan 2 of the exhaust area is operated so that the indoor air passes through the damper 13 and the filter 7 and is transferred to the exhaust area through the exhaust path of the total heat exchanger. It may be a mode that operates to be discharged outdoors.

Here, the control unit 300 controls the amount of exhaust flowing into the exhaust area by adjusting the air volume of the exhaust fan in the exhaust area.

8 is an exemplary view showing air flow according to the air cleaning mode shown in FIG. 5A.

Next, referring to FIG. 8, in the air cleaning mode of the ventilation device 200, the control unit 300 controls the damper 13 of the ventilation area, the damper 8 and 9 of the outside air area, and the damper 10 of the exhaust area. After shutting off the air supply fan (3) in the air supply area, the indoor air passes through the damper (12) and filter (6) in the ventilation area, and then bypasses the total heat exchanger and is transferred to the exhaust area. Thereafter, after being transferred to the air supply zone through the damper 11 and the vent 19 of the ventilation zone, it may be a mode of operating so that it is supplied to the room.

Here, the air cleaning mode of the ventilation device 200 may be operated to suppress the occurrence of condensation in the total heat exchanger, such as during the rainy season.

9 is an exemplary view showing the air flow according to the ventilation + air cleaning mode (supply) shown in Figure 5a, Figure 10 is an exemplary view showing the air flow according to the ventilation + air cleaning mode (exhaust) shown in Figure 5a And FIG. 11 is an exemplary view showing the air flow according to the ventilation + air cleaning mode (air clean circulation) shown in FIG. 5A.

Next, referring to FIG. 9, in the ventilation + air cleaning mode (supply) of the ventilation device 200, after the control unit 300 blocks the damper 8 of the outside air zone and the damper 12 of the ventilation zone, The zone operates the air supply fan (3), and the outdoor air from the outdoor side passes through the damper (9) and filter (5) of the outside air zone, passes through the air supply path of the total heat exchanger (1), and is transferred to the air supply zone. It may be a mode that operates to be supplied to.

Next, referring to FIG. 10, in the ventilation + air cleaning mode (exhaust) of the ventilation device 200, after the control unit 300 blocks the damper 8 in the outside air zone and the damper 12 in the ventilation zone, exhaust By activating the exhaust fan (2) of the zone, indoor air from the indoor side passes through the damper (13) and filter (7) of the ventilation zone, passes through the exhaust path of the total heat exchanger (1) and is transferred to the exhaust zone, and then It may be a mode that operates to be discharged to the side.

Next, referring to FIG. 11, in the ventilation + air cleaning mode (air clean circulation) of the ventilation device 200, after the control unit 300 blocks the damper 8 in the outside air zone and the damper 12 in the ventilation zone. , After starting the air supply fan (3) of the air supply area, the indoor air from the indoor side passes through the damper (13) and filter (7) of the ventilation area, passes through the exhaust path of the total heat exchanger (1), and is transferred to the exhaust area. , After some of the exhaust amount is transferred to the air supply area through the damper 11 and the ventilation hole 19 of the ventilation area, it may be a mode that operates to be supplied to the indoor side.

Here, the control unit 300 controls the air supply fan in the supply zone and the exhaust fan in the exhaust zone to adjust the amount of air passing through the total heat exchanger so that the amount of air exhaust> air supply amount.

Here, the controller 300 controls the amount of air supplied to the interior and the amount of exhaust exhausted to the outdoor side by adjusting the opening and closing amount of the damper 10 of the exhaust area and the damper 11 of the ventilation area.

12 is an exemplary view showing air flow according to the bypass ventilation mode (supply air) shown in FIG. 5A, and FIG. 13 is an exemplary view showing the air flow according to the bypass ventilation mode (exhaust) shown in FIG. 5A.

First, referring to FIG. 12, in the bypass ventilation mode (supply air) of the ventilation device 200, the control unit 300 includes a damper 9 in an outdoor air zone, a damper 13 in a ventilation zone, and a damper 11 in the ventilation zone. After blocking the air supply, the air supply fan (3) in the air supply area is operated, and the outdoor air from the outdoor side passes through the damper (8) and filter (4), and then passes through the total heat exchanger (1) and is transferred to the air supply area. It may be a mode that operates to be supplied indoors.

Next, referring to FIG. 13, in the bypass ventilation mode (exhaust) of the ventilation device 200, the control unit 300 controls the damper 13 of the ventilation area, the damper 9 of the outdoor area, and the damper 11 of the ventilation area. ) Is shut off, the exhaust fan (2) of the exhaust area is operated, and the indoor air passes through the damper (12) and filter (6), and passes through the total heat exchanger (1) to the exhaust area. It may be a mode that operates so as to be discharged to the outdoors.

Meanwhile, the bypass ventilation mode of the ventilation device 200 may be operated at midpoints such as spring and autumn.

14 is an exemplary view showing air flow according to the bypass ventilation + air cleaning mode (supply air) shown in FIG. 5A, and FIG. 15 is an air flow according to the bypass ventilation + air cleaning mode (exhaust) shown in FIG. 5A FIG. 16 is an exemplary view showing air flow according to the bypass ventilation + air cleaning mode (air clean circulation) shown in FIG. 5A.

Referring to FIG. 14, in the bypass ventilation + air cleaning mode (supply) of the ventilation device 200, after the control unit 300 blocks the damper 9 of the outside air zone and the damper 13 of the ventilation zone, the air supply zone The air supply fan (3) is operated so that the outdoor air from the outdoor side passes through the damper (8) and filter (4) of the outside air area, bypasses the total heat exchanger (1), is transferred to the supply area, and then is supplied to the interior. It may be an operating mode.

Next, referring to FIG. 15, in the bypass ventilation + air cleaning mode (exhaust) of the ventilation device 200, after the control unit 300 shuts off the damper 9 in the outside air zone and the damper 13 in the ventilation zone. , After activating the exhaust fan (2) of the exhaust area, the indoor air from the indoor side passes through the damper (12) and filter (6) of the ventilation area, and is transferred to the exhaust area by bypassing the total heat exchanger (1). , It may be a mode that operates to be discharged to the outdoor side.

Next, referring to FIG. 16, in the bypass ventilation + air clean mode (air clean circulation) of the ventilation device 200, the control unit 300 blocks the damper 9 in the outdoor area and the damper 13 in the ventilation area. After that, the air supply fan (3) of the air supply area is operated, and the indoor air passes through the damper (12) and filter (6) of the ventilation area, and is transferred to the exhaust area by bypassing the total heat exchanger (1). After that, a part of the exhaust amount may be transferred to the air supply area through the damper 11 and the ventilation port 19 of the ventilation area, and then may be operated to be supplied to the interior.

Here, the control unit 300 controls the air supply fan 3 of the air supply zone and the exhaust fan 2 of the exhaust region so that the amount of exhaust moving from the ventilation zone to the exhaust zone is greater than the amount of air moving from the outside air zone to the supply zone. Adjust.

Here, the control unit 300 controls the amount of air supplied to recirculate to the indoor side and the amount of exhaust exhausted to the outdoor side by adjusting the opening/closing amount of the damper 10 of the exhaust area and the damper 11 of the ventilation area.

17 is an exemplary view showing air flow according to the drying mode of the total heat exchanger shown in FIG. 5A.

Referring to FIG. 17, in the drying mode of the total heat exchanger of the ventilation device 200, the control unit 300 blocks the dampers 8 and 9 in the outdoor air zone, the damper 12 in the ventilation zone, and the damper 10 in the exhaust zone. After that, the air supply fan (3) of the air supply area is operated so that the indoor air passes through the damper (13) and filter (7) of the ventilation area, passes through the exhaust path of the total heat exchanger (1) to the exhaust area. After being transported, it may be a mode that operates to be transported to the air supply region through the damper 11 and the air vent 19 of the ventilation region and supplied to the room.

FIG. 18 is an exemplary view for explaining the principle of minimizing the occurrence of seasonal (winter season, summer season) condensation in the total heat exchanger that may occur when the ventilation (including total heat exchange ventilation) mode shown in FIG. 5A is performed.

Referring to FIG. 18, as in the present invention, by setting the amount of exhaust passing through the total heat exchanger to be greater than the amount of supply air, in winter (winter), the temperature of the heat exchange film (paper film) between the supply and exhaust of the total heat exchanger is (exhaust amount = air supply amount) ), (that is, the temperature of the paper film is higher than the dew point temperature according to the temperature and humidity conditions of the air exhausted from the room) and the likelihood of condensation on the exhaust side of the total heat exchanger decreases.

In addition, by setting the amount of exhaust passing through the total heat exchanger to be higher than the amount of air supply, the temperature of the paper film between supply and exhaust in the summer (summer) is lower than when (exhaust amount = supply air amount), but the standard domestic cooling temperature is 26℃ or higher. Considering that, there is no risk of condensation because the dew point temperature in the external air condition (35℃ for dry bulb, 24℃ for wet bulb) of the KS standard for dew condensation test is from about 40% of relative humidity to 19.4℃. That is, even under the condition of 100% total heat exchange efficiency, the temperature of the paper film cannot be less than (supply air temperature + exhaust temperature)/2, so there is no risk of condensation under the standard conditions.

FIG. 19 is a flowchart illustrating the principle of minimizing the leakage rate (reflow rate of exhausted polluted air) in the total heat exchanger according to the ventilation and air cleaning mode shown in FIG. 5A, that is, when the total heat exchanger standard displacement> supply air is performed.

Referring to FIG. 19, when the exhaust amount is set to be greater than the supply air amount, the exhaust flow velocity in the exhaust path of the total heat exchanger becomes larger than the supply air flow velocity in the supply path, which means that the static pressure in the exhaust path becomes smaller than the static pressure in the supply path. Air inflow from the exhaust path to the air supply path does not occur, which means that zero leakage rate of the total heat exchanger can be achieved.

Compared to the conventional method, the amount of exhaust passing through the total heat exchanger is increased, so that power consumption may be increased due to the increase in the static pressure of the total heat exchanger. However, it is possible to prepare for the occurrence of secondary problems as described above by the method shown in FIG. 4.

On the other hand, in the present invention, even in the case of the supply air quantity = exhaust quantity, as in the total heat ventilation mode, by designing the air supply side section of the total heat exchanger to be larger than the exhaust side section, the supply air of the total heat exchanger is the same as in the case of the exhaust quantity passing through the total heat exchanger> supply air quantity. By generating a change in the flow velocity between the path and the exhaust path, the leakage rate of the total heat exchanger can be zeroed with the same principle.

Therefore, when the improved air cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention is used, there is an advantage that it is possible to effectively remove fine dust in the room by simultaneously performing ventilation and air cleaning.

In addition, the use of the improved air cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention has the advantage of minimizing the possibility of condensation occurring in the total heat exchanger in winter.

In addition, by using the improved air-cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention, it is possible to maximize the airtightness performance of the ventilation system (minimizing the leakage rate, that is, the re-inflow rate of the exhausted air). There is this.

In the current standard, if the total leakage rate of the ventilation system exceeds 10%, it is a reason for disqualification as a ventilation system.

In addition, if the improved air cleaning parallel ventilation system and method using a plate-type total heat exchanger according to an embodiment of the present invention is used, the discomfort caused by the inflow of cold air even after total heat exchange that occurs when the outside temperature is low, such as in cold weather. There is an advantage that it is possible to minimize

For example, in winter, the temperature increases compared to the conventional method and supply air is introduced, and in the summer, the temperature is lower than that of the conventional method and supply air is introduced, which helps to improve comfort.

The present invention is not limited by the above-described embodiments and the accompanying drawings. For those of ordinary skill in the art to which the present invention pertains, it will be apparent that components according to the present invention can be substituted, modified, and changed within the scope of the technical spirit of the present invention.

100: Improved air purification parallel ventilation system using a plate-type total heat exchanger
201: sensing unit
T1: Outdoor air temperature and humidity sensor
T2: Indoor air temperature and humidity sensor
S1: Air flow detection sensor
S2: Air flow detection sensor
200: ventilation
1: total heat exchanger
2: exhaust fan
3: air supply fan
4: Filter for bypass ventilation (OA side)
5: Outside air filter (OA side)
6: Filter for bypass ventilation (RA side)
7: Ventilation filter (RA side)
8: Bypass ventilation damper (OA side)
9: Outside air damper (OA side)
10: Exhaust damper (EA side)
11: Air vent damper
12: Bypass ventilation damper (RA side)
13: Ventilation damper (RA side)
14, 15, 16: insect screen
17: air supply path for bypass ventilation
18: exhaust path for bypass ventilation
19: vent
300: control unit

Claims (12)

Operates in multiple operation modes, and controls the amount of exhaust passing through the total heat exchanger and bypass ventilation path to be equal to or greater than the supply air volume according to the indoor/outdoor temperature/humidity difference, indoor fine dust concentration, and indoor carbon dioxide concentration. A ventilation device that selectively and simultaneously performs cleaning; And
An improved air cleaning parallel ventilation system using a plate-type total heat exchanger comprising a control unit operating in one of the plurality of operation modes based on the indoor/outdoor temperature/humidity change, the indoor fine dust concentration, and the indoor carbon dioxide concentration.
The method of claim 1,
The ventilation device
An outdoor area for introducing outdoor air from the outside and measuring the temperature/humidity of the outdoor air;
A ventilation zone for introducing indoor air from the indoor side and measuring temperature/humidity, indoor fine dust concentration, and indoor carbon dioxide concentration of the indoor air;
An exhaust zone including an exhaust damper and an exhaust fan to exhaust the indoor air to the outdoor side;
An air supply zone including an air supply fan to introduce the introduced outdoor air to the indoor side;
A ventilation zone for providing indoor air introduced into the exhaust zone to the air supply zone using a damper; And
An improved air cleaning parallel ventilation system using a plate-type total heat exchanger comprising a total heat exchanger connected to the outside air part, the exhaust part, the air supply part, and the ventilation part to heat exchange between the exhaust air discharged from the room and the outside air sucked from the outside.
The method of claim 2,
The total heat exchanger
An improved air-cleaning parallel ventilation system using a plate-type total heat exchanger including an inclined resistance membrane for minimizing the resistance area at the air inlet side connected to the ventilation zone and the wall resistance at the cross flow side.
The method of claim 2,
The outside air area is
A first outside air path for providing the outdoor air from the outdoor side to the air flow inlet of the total heat exchanger; And
It is divided into a second outside air path for providing the outdoor air from the outdoor side to the supply area by bypassing the total heat exchanger,
The first and second outside air paths are improved air cleaning parallel ventilation systems using a plate-type total heat exchanger each including a filter and a damper.
The method of claim 2,
The ventilation zone is
A first ventilation path for providing the indoor air to the air flow inlet of the total heat exchanger; And
It is divided into a second ventilation path for providing the indoor air to the exhaust zone by bypassing the total heat exchanger,
The first ventilation path and the second ventilation path are improved air cleaning parallel ventilation system using a plate-type total heat exchanger each including a filter and a damper.
The method of claim 4,
The ventilation device
An improved air cleaning parallel ventilation system using a plate-type total heat exchanger further comprising an air supply path for bypass ventilation connecting the second outside air path and the air supply zone.
The method of claim 5,
The ventilation device
An improved air cleaning parallel ventilation system using a plate-type total heat exchanger further comprising an exhaust path for bypass ventilation connecting the second ventilation path and the exhaust zone.
The method of claim 1,
The plurality of operation modes are
It includes ① ventilation mode, ② air cleaning mode, ③ ventilation + air cleaning mode, ④ bypass ventilation mode, ⑤ bypass ventilation + air cleaning mode, and ⑥ total heat exchanger drying mode.
When the ventilation device is operated in the ③ ventilation + air cleaning mode and the ⑤ bypass ventilation + air cleaning mode,
Adjusting the air volume of the air supply fan and the exhaust fan so that the amount of air supply flowing in the total heat exchanger is generated smaller than the amount of exhaust air,
An improved air cleaning parallel ventilation system using a plate-type total heat exchanger that adjusts the air volume of the air supply fan and the exhaust fan so that the amount of air supply flowing in the bypass ventilation air supply path is smaller than that of the exhaust air flowing in the bypass ventilation exhaust path. .
The method of claim 8,
The ventilation device
When operated in the ③ ventilation + air cleaning mode and the ⑤ bypass ventilation + air cleaning mode, an improved air cleaning parallel ventilation system using a plate-type total heat exchanger that operates in combination with supply, exhaust and air clean circulation.
The method of claim 8,
The ventilation device
When operated in the ③ ventilation + air cleaning mode and the ⑤ bypass ventilation + air cleaning mode, an improved air cleaning parallel ventilation system using a plate-type total heat exchanger that recirculates part of the exhaust volume and flows it into the room.
The method of claim 8,
The control unit
A plate-type total heat exchanger that controls the amount of exhaust and air flow for air cleaning by adjusting the opening/closing ratio of the damper of the exhaust area and the damper of the air clean ventilation area based on the value of the air volume passing through the damper of the exhaust area and the air clean ventilation area. Improved air purification parallel ventilation system using.
The method of claim 8,
The ventilation device
When operated in the above ① ventilation mode, a plate-type total heat exchanger designed so that the air supply side end face of the total heat exchanger is larger than the exhaust side end surface so that the air leakage rate of the total heat exchanger becomes zero even when the air supply amount passing through the total heat exchanger is the same as the exhaust amount. Improved air purification parallel ventilation system using.

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