KR102534760B1 - Building ventilation system - Google Patents

Abstract

Provided is a building ventilation system including first to n^th ventilation facilities and a controller. The first to n^th ventilation facilities each includes: a fan which selectively creates an air intake flow from the outside to the inside of the building and an air exhaust flow from the inside of the building to the outside; and a filter placed adjacent to the fan. The controller divides the first to n^th ventilation facilities into first to m^th pollution degree groups according to the pollution level of the filter included in each of the first to n^th ventilation facilities, and when the fan generates the air intake flow and the air exhaust flow during ventilation operation time, controls the operating speed of the fan differently between the first to m^th pollution degree groups.

Description

Building ventilation system {BUILDING VENTILATION SYSTEM}

The present invention relates to building ventilation systems. More specifically, the present invention relates to a building ventilation system that introduces air from the outside of a building into the interior of the building and exhausts the air from the inside of the building to the outside of the building.

Recently, in order to keep the living environment inside the building comfortable, there are many building ventilation systems in buildings that perform building ventilation by introducing air from outside the building into the inside of the building and discharging the air inside the building to the outside of the building. being installed In general, a building ventilation system includes an inlet ventilation facility that introduces air from outside the building into the interior of the building and/or an outlet ventilation facility that exhausts air from the interior of the building to the outside of the building. In particular, inlet ventilation The installation includes a fan that creates an inlet flow of air from the exterior to the interior of the building and a filter disposed adjacent to the fan. However, in the conventional building ventilation system, as the building ventilation is performed for a long time, the filter included in the inflow ventilation equipment is polluted (eg, fine dust mixed with the air from the outside of the building as it enters the inside of the building). Since foreign substances such as the etc. are attached to the filter included in the inlet ventilation facility), there is the inconvenience of periodically replacing the filter included in the inlet ventilation facility, and it is difficult to continue using the filter included in the inlet ventilation facility without replacing it. In this case, the fan included in the inlet ventilation system becomes overloaded and causes a failure.

One object of the present invention is to prevent the fan included in the ventilation facility from being overloaded even if the filter included in the ventilation facility is contaminated, and to increase the replacement cycle of the filter included in the ventilation facility by using the fan included in the ventilation facility, An object of the present invention is to provide a building ventilation system capable of efficiently balancing pressure in a building through operation control of a fan included in a ventilation system. However, the object of the present invention is not limited to the above-mentioned object, and may be expanded in various ways without departing from the spirit and scope of the present invention.

In order to achieve one object of the present invention, a building ventilation system according to embodiments of the present invention selectively generates an air inlet flow from the outside to the inside of a building and an air exhaust flow from the inside to the outside of the building. The first to nth (where n is an integer of 2 or more) ventilation facilities each including a fan and a filter disposed adjacent to the fan, and the first to nth ventilation according to the degree of contamination of the filter. The facilities are divided into first to m (where m is an integer of 1 or more) pollution degree groups, and the first to m pollution degree groups are generated when the fan generates the air inlet flow and the air outlet flow during ventilation operating time. It may include a controller that differently controls the operating speed of the fan between the groups.

According to an embodiment, the controller may update the first to m-th pollution degree groups by repeatedly measuring the pollution level of the filter at each predetermined pollution level measurement period for each of the first to n-th ventilation facilities. .

According to an embodiment, the controller performs a first ventilation operation in which the first to nth ventilation devices generate the air inlet flow and the first to nth ventilation devices generate the air outlet flow during the ventilation operation time. The second ventilation operation may be alternated.

According to one embodiment, the first unit time during which the first ventilation operation is performed and the second unit time during which the second ventilation operation is performed may be temporally continuous or separated from each other.

According to one embodiment, the controller controls the first unit time to be longer than the second unit time when the inside of the building is set to a positive pressure, and when the inside of the building is set to a negative pressure, the first unit The time is controlled to be shorter than the second unit time, and when the interior of the building is set to medium pressure, the first unit time and the second unit time may be equally controlled.

According to an embodiment, the k-th contamination degree group (where k is an integer greater than or equal to 1 and less than n) pollution degree group may have a lower contamination degree of the filter than the k+1-th pollution degree group.

According to an embodiment, the controller may set the operating speed of the fan included in the k+1th pollution degree group to the kth pollution degree group when the first to nth ventilation facilities generate the air inlet flow. It is possible to control slower than the operating speed of the fan included in the.

According to an embodiment, the controller assigns the operating time of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation facilities generate the air inlet flow. It can be controlled longer than the operating time of the included fan.

According to an embodiment, the controller may set the operating speed of the fan included in the k+1th pollution degree group to the kth pollution degree group when the first to nth ventilation facilities generate the air discharge flow. It is possible to control faster than the operating speed of the fan included in the.

According to an embodiment, the controller assigns the operating time of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation facilities generate the air discharge flow. It can be controlled shorter than the operating time of the included fan.

A building ventilation system according to embodiments of the present invention includes a fan that selectively generates an air inflow flow from the outside of a building to the inside and an air exhaust flow from the inside of the building to the outside, and a filter disposed adjacent to the fan, respectively. The first to n-th ventilation facilities including first to n-th ventilation facilities and the first to n-th ventilation facilities are divided into first to m-th pollution degree groups according to the degree of contamination of the filter, and the fan generates an air inlet flow and an air outlet flow. by including a controller for differently controlling the operation speed of the fan between the first to m-th pollution degree groups, so that even if the filters included in each of the first to n-th ventilation equipment are contaminated, the first to n-th ventilation equipment Prevent overloading of the fan included in each, and increase the replacement cycle of the filter included in each of the first to nth ventilation devices by using the fan included in each of the first to nth ventilation devices, Through the operation control of the fan included in each of the through nth ventilation facilities (ie, adjusting the operation speed and operation time of the fan during the ventilation operation time), the pressure balancing of the building (eg, maintaining positive pressure, negative pressure, and neutral pressure) can be performed efficiently. However, the effects of the present invention are not limited to the above-mentioned effects, and may be variously extended without departing from the spirit and scope of the present invention.

1 is a block diagram showing a building ventilation system according to embodiments of the present invention.
FIG. 2 is a view showing each of first through n-th ventilation facilities included in the building ventilation system of FIG. 1 .
FIG. 3 is a view showing an example in which first to nth ventilation facilities in the building ventilation system of FIG. 1 are divided into first to mth pollution degree groups.
FIG. 4 is a view showing an example in which first through n-th ventilation facilities operate in the building ventilation system of FIG. 1 .
FIG. 5 is a view showing an example in which a fan included in each of the first to n-th ventilation facilities in the building ventilation system of FIG. 1 generates an air inlet flow.
FIG. 6 is a view showing an example in which a fan included in each of the first to n-th ventilation equipment in the building ventilation system of FIG. 1 generates an air discharge flow.
FIG. 7 is a flow chart showing operation control of the fan included in each of the first through n-th ventilation devices in the building ventilation system of FIG. 1 when the fan generates an air inlet flow.
FIG. 8 is a flowchart illustrating operation control of the fan included in each of the first through n-th ventilation devices in the building ventilation system of FIG. 1 when the fan generates an air discharge flow.

For the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are only exemplified for the purpose of explaining the embodiments of the present invention, and the embodiments of the present invention may be implemented in various forms and the text It should not be construed as being limited to the embodiments described above.

Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "having" are intended to indicate that the described feature, number, step, operation, component, part, or combination thereof exists, but that one or more other features or numbers are present. However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. The same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

1 is a block diagram showing a building ventilation system according to embodiments of the present invention, FIG. 2 is a view showing each of the first to nth ventilation equipment included in the building ventilation system of FIG. 1, and FIG. It is a view showing an example in which the first to nth ventilation facilities in the building ventilation system of 1 are divided into the first to mth pollution degree groups.

1 to 3, the building ventilation system 100 includes first to nth (where n is an integer of 2 or more) ventilation equipment 120(1), ..., 120(n) and a controller. (140).

Each of the first to nth ventilation devices 120(1), ..., 120(n) may include a fan 122 and a filter 124. Meanwhile, although FIG. 2 shows that the fan 122 is located close to the inside (INSIDE) of the building 500 and the filter 124 is located close to the outside (OUTSIDE) of the building 500, this is exemplary, The fan 122 may be positioned close to the outside (OUTSIDE) of the building 500 and the filter 124 may be positioned close to the inside (INSIDE) of the building 500 . In addition, FIG. 2 shows that each of the first to nth ventilation facilities 120(1), ..., 120(n) includes one fan 122 and one filter 124, but , Depending on the embodiment, each of the first to n th ventilation installations 120(1), ..., 120(n) may include two or more fans 122 and two or more filters 124. can

The fan 122 generates an air intake flow (AIF) from the outside (OUTSIDE) of the building 500 to the inside (INSIDE) and an air exhaust flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE) of the building 500 can optionally be created. Specifically, as shown in FIG. 2, as the fan 122 is operated (eg, rotated), an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is When formed, air from the outside (OUTSIDE) of the building 500 may flow into the inside (INSIDE) of the building 500 . In addition, as shown in FIG. 2, as the fan 122 is operated (eg, rotated), an air discharge flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE) of the building 500 is formed. In this case, the air inside the building 500 (INSIDE) may be discharged to the outside (OUTSIDE) of the building 500.

Filter 124 may be disposed adjacent fan 122 . The fan 122 may remove foreign substances such as fine dust mixed in the air when air from the outside (OUTSIDE) of the building 500 is introduced into the inside (INSIDE) of the building 500 . At this time, as the building ventilation is performed for a long time, the filter 124 may be gradually contaminated as the foreign substances adhere to the filter 124 . In other words, as building ventilation is performed for a long time, the degree of contamination of the filter 124 may increase. For this reason, in the conventional building ventilation system, there is the inconvenience of periodically replacing the filter included in the inlet ventilation facility, and if the filter included in the inlet ventilation facility is continuously used without being replaced, the fan included in the inlet ventilation facility is overloaded, causing failure.

According to the embodiment, each of the first to nth ventilation facilities 120(1), ..., 120(n) is an air inlet flow directed from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 ( AIF) is formed, an air cooling structure that cools the air and / or an air heating structure that heats the air when an air inlet flow (AIF) is formed from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 can include more. In this case, when the cooling facility is to be operated in the building 500 (for example, in summer), an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is formed. When the air cooling structure to cool the air can operate. In addition, when a heating facility is to be operated in the building 500 (for example, in winter), when an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is formed An air heating structure that heats the air is operable. However, this is an example, and the operating conditions of the air cooling structure and/or the air heating structure are not limited thereto.

The controller 140 controls the first to n-th ventilation devices 120 according to the degree of contamination of the filter 124 included in each of the first to n-th ventilation devices 120(1), ..., 120(n). (1), ..., 120 (n)) are divided into first to m (provided that m is an integer of 1 or more) contamination degree groups (GRP (1), ..., GRP (m)), During the ventilation operation time, the fan 122 included in each of the first to nth ventilation devices 120(1), ..., 120(n) controls the air inlet flow (AIF) and the air outlet flow (AOF). When generating, the first to nth ventilation facilities 120(1), ..., 120(n) between the first to mth pollution degree groups (GRP(1), ..., GRP(m)) Operating speeds of the fans 122 included in each may be differently controlled. At this time, the controller 140 controls the first to n-th ventilation devices 120 for each of the first to n-th ventilation devices 120(1), ..., 120(n) for each predetermined pollution level measurement period. (1), ..., 120 (n)) by repeatedly measuring the contamination degree of the filter 124 included in each of the first to m contamination degree groups (GRP (1), ..., GRP (m) ) can be updated.

Specifically, the controller 140 may first to n-th ventilation equipment according to the contamination level of the filter 124 included in each of the first to n-th ventilation equipment 120(1), ..., 120(n). 120(1), ..., 120(n) may be divided into first to m th pollution degree groups GRP(1), ..., GRP(m). For example, the controller 140 determines the ventilation equipment 120 including the filter 124 in the lowest pollution level range as the first pollution level group (GRP(1)), and determines the pollution level in the highest range. The ventilation equipment 120 including the filter 124 may be determined as the mth pollution degree group GRP(m). Meanwhile, for convenience of explanation, FIG. 3 includes 16 ventilation facilities 120(1), ..., 120(16) in the building 500, and 16 ventilation facilities 120(1) , ..., 120 (16) are divided into five pollution degree groups (GRP (1), ..., GRP (5)) is shown as an example. In this case, the filter 124 included in the ventilation equipment 120 belonging to the first pollution degree group (GRP(1)) has the least pollution degree, and the ventilation equipment 120 belonging to the fifth pollution degree group (GRP(5)) The filter 124 included in ) has the highest degree of contamination. In one embodiment, the controller 140 operates the filter 124 while operating the fan 122 at a reference operating speed for each of the first through nth ventilation installations 120(1), ..., 120(n). ) The contamination level of the filter 124 can be measured by detecting the amount of air passing through the filter 124 . However, this is just an example, and the degree of contamination of the filter 124 may be measured in various ways (eg, a laser sensing method, etc.).

The controller 140 controls the fan 122 included in each of the first to n-th ventilation devices 120 (1), ..., 120 (n) during the ventilation operation time to generate an air inlet flow (AIF). between the first to mth pollution degree groups GRP(1), ..., GRP(m) to the first to nth ventilation facilities 120(1), ..., 120(n), respectively. The operating speed of the included fan 122 can be controlled differently. Specifically, when the fan 122 included in each of the first to n th ventilation facilities 120(1), ..., 120(n) generates an air inlet flow AIF, the k+1 th The contamination level of the filter 124 of the ventilation equipment 120 included in the pollution degree group (GRP(k+1)) is that of the filter 124 of the ventilation equipment 120 included in the kth pollution degree group (GRP(k)). Assuming that the pollution level is greater than the pollution level, the controller 140 determines the operating speed (eg, rotational speed) of the fan 122 of the ventilation equipment 120 included in the k+1 th pollution level group (GRP(k+1)). The operating speed of the fan 122 of the ventilation equipment 120 included in the kth pollution degree group GRP(k) may be controlled slower than the operating speed. That is, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates an air inlet flow AIF, the controller 140 Ventilation by relatively slowing the operating speed of the fan 122 included in the ventilation equipment 120 with respect to the pollution degree group (GRP) to which the ventilation equipment 120 including the filter 124 in the relatively high pollution level belongs. By preventing the fan 122 included in the facility 120 from being overloaded, the failure rate of the fan 122 included in the ventilation facility 120 can be reduced.

On the other hand, the controller 140 controls the air inlet flow (AIF) of the fan 122 included in each of the first to nth ventilation facilities 120 (1), ..., 120 (n) during the ventilation operating time. When generating, the first to nth ventilation facilities 120(1), ..., 120(n) between the first to mth pollution degree groups (GRP(1), ..., GRP(m)) The operation time of the fans 122 included in each may be differently controlled. Specifically, when the fan 122 included in each of the first to n th ventilation facilities 120(1), ..., 120(n) generates an air inlet flow AIF, the k+1 th The contamination level of the filter 124 of the ventilation equipment 120 included in the pollution degree group (GRP(k+1)) is that of the filter 124 of the ventilation equipment 120 included in the kth pollution degree group (GRP(k)). Assuming that the pollution level is greater than the pollution level, the controller 140 calculates the operation time of the fan 122 of the ventilation equipment 120 included in the k+1th pollution level group (GRP(k+1)) to the kth pollution level group (GRP(k+1)). )) can be controlled longer than the operating time of the fan 122 of the ventilation facility 120 included in the fan 122 . That is, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates an air inlet flow AIF, the controller 140 Ventilation by making the operation time of the fan 122 included in the ventilation equipment 120 relatively long for the pollution level group (GRP) to which the ventilation equipment 120 including the filter 124 in the relatively high pollution level belongs. Even if the operating speed of the fan 122 included in the facility 120 slows down, the amount of air to be introduced may not decrease.

In addition, the controller 140 controls the fan 122 included in each of the first to n-th ventilation facilities 120 (1), ..., 120 (n) to control the air discharge flow (AOF) during the ventilation operation time. When generating, the first to nth ventilation facilities 120(1), ..., 120(n) between the first to mth pollution degree groups (GRP(1), ..., GRP(m)) Operating speeds of the fans 122 included in each may be differently controlled. Specifically, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates the air exhaust flow AOF, the k+1th The contamination level of the filter 124 of the ventilation equipment 120 included in the pollution degree group (GRP(k+1)) is that of the filter 124 of the ventilation equipment 120 included in the kth pollution degree group (GRP(k)). Assuming that the pollution level is greater than the pollution level, the controller 140 sets the operating speed of the fan 122 of the ventilation equipment 120 included in the k+1th pollution level group (GRP(k+1)) to the kth pollution level group (GRP(k+1)). )) can be controlled faster than the operating speed of the fan 122 of the ventilation facility 120 included in the unit. That is, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates the air exhaust flow AOF, the controller 140 Ventilation by making the operation speed of the fan 122 included in the ventilation equipment 120 relatively fast for the pollution level group (GRP) to which the ventilation equipment 120 including the filter 124 in the relatively high pollution level belongs. The replacement cycle of the filter 124 included in the ventilation facility 120 may be increased by shaking off foreign substances attached to the filter 124 included in the facility 120 to the outside of the building 500.

On the other hand, the controller 140 controls the air discharge flow (AOF) of the fan 122 included in each of the first to nth ventilation facilities 120 (1), ..., 120 (n) during the ventilation operating time. When generating, the first to nth ventilation facilities 120(1), ..., 120(n) between the first to mth pollution degree groups (GRP(1), ..., GRP(m)) The operation time of the fans 122 included in each may be differently controlled. Specifically, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates the air exhaust flow AOF, the k+1th The contamination level of the filter 124 of the ventilation equipment 120 included in the pollution degree group (GRP(k+1)) is that of the filter 124 of the ventilation equipment 120 included in the kth pollution degree group (GRP(k)). Assuming that the pollution level is greater than the pollution level, the controller 140 calculates the operation time of the fan 122 of the ventilation equipment 120 included in the k+1th pollution level group (GRP(k+1)) to the kth pollution level group (GRP(k+1)). )) can be controlled shorter than the operating time of the fan 122 of the ventilation facility 120 included in). That is, when the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n) generates the air exhaust flow AOF, the controller 140 Ventilation by relatively shortening the operation time of the fan 122 included in the ventilation equipment 120 with respect to the pollution level group (GRP) to which the ventilation equipment 120 including the filter 124 in the relatively high pollution level belongs. Even if the operating speed of the fan 122 included in the facility 120 increases, the amount of air to be discharged may not increase.

As such, the building ventilation system 100 has an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 and air from the inside (INSIDE) to the outside (OUTSIDE) of the building 500. The first through n-th ventilation installations 120(1), each including a fan 122 that selectively generates an exhaust flow (AOF) and a filter 124 disposed adjacent to the fan 122, ... , 120 (n)), and the first to nth ventilation equipments 120 (1), ..., 120 (n) according to the pollution level of the filter 124 are divided into the first to m pollution degree groups ( GRP (1), ..., GRP (m)), and the first to m pollution degree groups (when the fan 122 generates an air inlet flow (AIF) and an air outlet flow (AOF)) By including a controller 140 that controls the operating speed of the fan 122 differently among GRP(1), ..., GRP(m), the first to nth ventilation facilities 120(1), Even if the filter 124 included in each of ..., 120 (n) is contaminated, the fan 122 included in each of the first to nth ventilation facilities 120 (1), ..., 120 (n) ) is prevented from being overloaded, and the first to nth ventilation facilities are prevented from being overloaded, and the first to nth ventilation facilities are used by using the fan 122 included in each of the first to nth ventilation facilities 120(1), ..., 120(n). The replacement cycle of the filter 124 included in each of the s 120(1), ..., 120(n) is increased, and the first to nth ventilation facilities 120(1), ..., 120( n)) through operation control of the fans 122 included in each (ie, adjusting the operation speed and operation time of the fan 122 during the ventilation operation time) to balance the pressure of the building 500 (eg, positive pressure, maintaining negative pressure and medium pressure) can be performed efficiently.

FIG. 4 is a view showing an example in which first to nth ventilation facilities operate in the building ventilation system of FIG. 1 , and FIG. 5 is a fan included in each of the first to nth ventilation facilities in the building ventilation system of FIG. 1 . FIG. 6 is a diagram showing an example of generating the air inflow flow, and FIG. 6 is a diagram showing an example of generating the air exhaust flow by the fans included in each of the first to nth ventilation facilities in the building ventilation system of FIG. 1 . .

4 to 6, the controller 140 controls the first to n-th ventilation facilities 120 (1), ..., 120 (n) during the ventilation operation time to the outside (OUTSIDE) of the building 500. ) to the inside (INSIDE), the first ventilation operation and the first to n-th ventilation installations 120 (1), ..., 120 (n) generating an air inflow flow (AIF) to the building (500) It is possible to alternate the second ventilation operation to create an air discharge flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE). At this time, the first ventilation operation for generating an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is performed for a first unit time (UT1), and the inside of the building 500 The second ventilation operation of generating the air discharge flow AOF from the INSIDE to the OUTSIDE may be performed during the second unit time UT2. In one embodiment, as shown in FIG. 4 , during the ventilation operation time, the first unit time UT1 in which the first ventilation operation is performed and the second unit operation UT2 in which the second ventilation operation is performed are temporally can be continued with In another embodiment, during the ventilation operating time, the first unit time UT1 in which the first ventilation operation is performed and the second unit operation UT2 in which the second ventilation operation is performed may be separated in time.

Specifically, the controller 140 controls the first to nth ventilation facilities 120(1), ..., 120(n) during the first unit time UT1 from the outside (OUTSIDE) of the building 500. A first ventilation operation may be performed to generate an air inflow (AIF) directed to the inside (ie, indicated by a dotted line in FIG. 5 ). For example, as shown in FIG. 5, the controller 140 determines the degree of contamination of the filter 124 included in each of the first to sixteenth ventilation equipment 120(1), ..., 120(16). According to the first to sixteenth ventilation equipment (120 (1), ..., 120 (16)) to the first to fifth pollution degree groups (GRP (1), ..., GRP (5)) and the first to the sixteenth ventilation facilities 120 (1), ..., 120 (16) between the first to fifth pollution degree groups (GRP (1), ..., GRP (5)) The operating speed of each fan 122 (according to the embodiment, up to the operating time of the fan 122) may be differently controlled. At this time, assuming that the contamination degree of the filter 124 of the ventilation equipment 120 is high in the order of the first to fifth pollution degree groups (GRP(1), ..., GRP(5)), the first to the sixteenth pollution degree groups are When the ventilation facilities 120(1), ..., 120(16) generate the air inlet flow AIF, the first to fifth pollution degree groups GRP(1), ..., GRP( In order of 5)), the operating speed (eg, rotational speed) of the fan 122 of the ventilation facility 120 may be controlled slowly. In addition, assuming that the contamination degree of the filter 124 of the ventilation facility 120 is high in the order of the first to fifth pollution degree groups (GRP(1), ..., GRP(5)), the first to sixteenth ventilation When the facilities 120(1), ..., 120(16) generate the air inlet flow (AIF), the first to fifth pollution degree groups (GRP(1), ..., GRP(5) )), the operation time of the fan 122 of the ventilation facility 120 can be controlled long.

In addition, the controller 140 controls the first to nth ventilation facilities 120(1), ..., 120(n) during the second unit time UT2 from the inside (INSIDE) of the building 500 to the outside. A second ventilation operation may be performed to generate an air discharge flow (AOF) directed to (OUTSIDE) (that is, indicated by a dotted line in FIG. 6 ). For example, as shown in FIG. 6 , the controller 140 determines the contamination level of the filter 124 included in each of the first to sixteenth ventilation equipment 120(1), ..., 120(16). According to the first to sixteenth ventilation equipment (120 (1), ..., 120 (16)) to the first to fifth pollution degree groups (GRP (1), ..., GRP (5)) and the first to the sixteenth ventilation facilities 120 (1), ..., 120 (16) between the first to fifth pollution degree groups (GRP (1), ..., GRP (5)) The operating speed of each fan 122 (according to the embodiment, up to the operating time of the fan 122) may be differently controlled. At this time, assuming that the contamination degree of the filter 124 of the ventilation equipment 120 is high in the order of the first to fifth pollution degree groups (GRP(1), ..., GRP(5)), the first to the sixteenth pollution degree groups are When the ventilation facilities 120(1), ..., 120(16) generate the air discharge flow (AOF), the first to fifth pollution degree groups (GRP(1), ..., GRP( In order of 5)), the operating speed of the fan 122 of the ventilation facility 120 can be rapidly controlled. In addition, assuming that the contamination degree of the filter 124 of the ventilation facility 120 is high in the order of the first to fifth pollution degree groups (GRP(1), ..., GRP(5)), the first to sixteenth ventilation When the facilities 120(1), ..., 120(16) generate the air discharge flow (AOF), the first to fifth pollution degree groups (GRP(1), ..., GRP(5) )), the operating time of the fan 122 of the ventilation facility 120 can be controlled to be short.

In one embodiment, the controller 140, when the interior (INSIDE) of the building 500 is set to a positive pressure, the air inlet flow (OUTSIDE) to the interior (INSIDE) of the building 500 ( The second ventilation operation generating the air discharge flow AOF from the inside (INSIDE) to the outside (OUTSIDE) of the building 500 during the first unit time (UT1) during which the first ventilation operation generating AIF is performed. It may be controlled longer than the second unit time UT2 to be performed. In this case, since the amount of air coming from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is greater than the amount of air going out from the inside (INSIDE) of the building 500 to the outside (OUTSIDE), the inside of the building 500 ( INSIDE) can be maintained at positive pressure. In another embodiment, the controller 140, when the INSIDE of the building 500 is set to a negative pressure, the air inlet flow from the OUTSIDE to the INSIDE of the building 500 ( The second ventilation operation generating the air discharge flow AOF from the inside (INSIDE) to the outside (OUTSIDE) of the building 500 during the first unit time (UT1) during which the first ventilation operation generating AIF is performed. It can be controlled shorter than the second unit time UT2 to be performed. In this case, since the amount of air coming from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is less than the amount of air going out from the inside (INSIDE) of the building 500 to the outside (OUTSIDE), the inside of the building 500 ( INSIDE) can be maintained at negative pressure. In another embodiment, the controller 140 controls the air intake flow from the OUTSIDE to the INSIDE of the building 500 when the INSIDE of the building 500 is set to a neutral pressure. A second ventilation operation for generating an air discharge flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE) of the building 500 during the first unit time (UT1) during which the first ventilation operation generating AIF is performed. It can be controlled to be the same as the second unit time UT2 during which this is performed. In this case, since the amount of air entering from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 is equal to the amount of air going out from the inside (INSIDE) of the building 500 to the outside (OUTSIDE), the inside (INSIDE) of the building 500 ) can be maintained at medium pressure.

FIG. 7 is a flowchart illustrating operation control of the fan included in each of the first through n-th ventilation devices in the building ventilation system of FIG. 1 when the fan generates an air inlet flow.

Referring to FIG. 7, when the building ventilation system 100 starts (S110) a first ventilation operation to generate an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building (500), A contamination level group (GRP) to which the target ventilation facility 120 (ie, the ventilation facility 120 to be operated to generate the air inlet flow AIF) belongs may be checked (S120). At this time, the building ventilation system 100 may check the operation speed and operation time set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs (S130). For example, the building ventilation system 100 includes operation speeds and operation times during a first ventilation operation corresponding to each of the first to m pollution degree groups (GRP(1), ..., GRP(m)). It is possible to check the operation speed and operation time during the first ventilation operation set in the pollution degree group (GRP) to which the target ventilation equipment 120 belongs by including a mapping table stored therein, and searching the mapping table. . However, this is exemplary, and the method of confirming the operation speed and operation time during the first ventilation operation set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs is not limited thereto. Thereafter, the building ventilation system 100 sets the fan 122 included in the target ventilation equipment 120 to the pollution level to which the target ventilation equipment 120 belongs during the operating time set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs. A first ventilation operation for generating an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) of the building 500 may be performed by driving (S140) at the operating speed set in the group (GRP). In this way, the steps S110, S120, S130, and S140 are performed on each of the first to nth ventilation facilities 120(1), ..., 120(n) included in the building 500 (ie, Since it is performed for the target ventilation facility 120), the first to nth ventilation facilities 120(1), ..., 120(n) included in the building 500 are A first ventilation operation for generating an air inflow flow (AIF) from the outside (OUTSIDE) to the inside (INSIDE) may be simultaneously performed.

FIG. 8 is a flow chart showing operation control of the fan included in each of the first through n-th ventilation devices in the building ventilation system of FIG. 1 when generating an air discharge flow.

Referring to FIG. 8, when the building ventilation system 100 starts a second ventilation operation (S210) to generate an air discharge flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE) of the building 500, A contamination level group (GRP) to which the target ventilation facility 120 (ie, the ventilation facility 120 to be operated to generate the air discharge flow AOF) belongs may be checked (S220). At this time, the building ventilation system 100 may check the operation speed and operation time set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs (S230). For example, the building ventilation system 100 has operation speeds and operation times during the second ventilation operation corresponding to each of the first to m pollution degree groups (GRP(1), ..., GRP(m)). contains a stored mapping table, and the operation speed and operation time during the second ventilation operation set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs can be checked by searching the mapping table. However, this is an example, and the method of confirming the operation speed and operation time during the second ventilation operation set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs is not limited thereto. Thereafter, the building ventilation system 100 sets the fan 122 included in the target ventilation equipment 120 to the pollution level to which the target ventilation equipment 120 belongs during the operating time set in the pollution level group (GRP) to which the target ventilation equipment 120 belongs. A second ventilation operation may be performed to generate an air discharge flow AOF from the inside of the building 500 to the outside by driving at the operating speed set in the group GRP (S240). In this way, the steps S210, S220, S230, and S240 are performed on each of the first to nth ventilation facilities 120(1), ..., 120(n) included in the building 500 (ie, Since it is performed for the target ventilation facility 120), the first to nth ventilation facilities 120(1), ..., 120(n) included in the building 500 are A second ventilation operation for generating an air discharge flow (AOF) from the inside (INSIDE) to the outside (OUTSIDE) may be simultaneously performed.

INDUSTRIAL APPLICABILITY The present invention can be widely applied to a building ventilation system that introduces air from the outside of a building into the inside of a building and discharges air from the inside of the building to the outside of the building. On the other hand, although the present invention has been described with reference to the embodiments above, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

100: building ventilation system 120: ventilation equipment
122 fan 124 filter
GRP: Pollution Degree Group 500: Buildings

Claims (10)

first to second filters each comprising a fan for selectively generating an air inlet flow from the outside to the inside of the building and an air exhaust flow from the inside to the outside of the building, and a filter disposed adjacent to the fan. n (where n is an integer of 2 or more) ventilation facilities; and
The first to n-th ventilation facilities are divided into first to m-th (provided that m is an integer of 1 or more) pollution degree groups according to the pollution level of the filter, and the fan controls the air inlet flow and the air during ventilation operation time. and a controller for differentially controlling an operating speed of the fan between the first to mth pollution degree groups when generating an exhaust flow. The method of claim 1, wherein the controller updates the first to m pollution degree groups by repeatedly measuring the pollution level of the filter at predetermined pollution level measurement intervals for each of the first to n th ventilation facilities. building ventilation system. The method of claim 1 , wherein the controller performs a first ventilation operation in which the first to n th ventilation devices generate the air inlet flow and the first to n th ventilation devices generate the air outlet flow during the ventilation operation time. Building ventilation system, characterized in that for alternating the second ventilation operation to do. The building ventilation system according to claim 3, wherein the first unit time for performing the first ventilation operation and the second unit time for performing the second ventilation operation are temporally continuous or spaced apart. The method of claim 4, wherein the controller controls the first unit time to be longer than the second unit time when the inside of the building is set to a positive pressure, and controls the first unit time to be longer than the second unit time when the inside of the building is set to a negative pressure The building ventilation system, characterized in that the time is controlled to be shorter than the second unit time, and the first unit time and the second unit time are equally controlled when the inside of the building is set to medium pressure. The building ventilation system according to claim 1, wherein the pollution degree of the filter in the kth pollution degree group (where k is an integer greater than or equal to 1 and less than n) pollution degree group is smaller than that of the k+1th pollution degree group. The method of claim 6 , wherein the controller sets the operating speed of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation devices generate the air inlet flow. Building ventilation system, characterized in that for controlling slower than the operating speed of the fan included in. The method of claim 7 , wherein the controller assigns an operation time of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation facilities generate the air inlet flow. Building ventilation system, characterized in that for controlling longer than the operating time of the included fan. The method according to claim 6, wherein the controller sets the operating speed of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation devices generate the air discharge flow. Building ventilation system, characterized in that for controlling faster than the operating speed of the fan included in. 10. The method of claim 9 , wherein the controller assigns an operation time of the fan included in the k+1th pollution degree group to the k-th pollution degree group when the first to n-th ventilation facilities generate the air discharge flow. Building ventilation system, characterized in that for controlling shorter than the operating time of the included fan.

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