KR102485737B1 - Negative pressure air shower system at the entrance of a building - Google Patents

Abstract

The present invention relates to a negative-pressure air shower system at an entrance of a building, wherein contaminants such as dust and viruses, which are introduced when a user of the building enters the entrance, can be discharged swiftly to the outside, comprising: an opening and closing sensor for detecting the opening and closing operation of an entrance door; an operation detection sensor for detecting the operation of a human body in the entrance; an exhaust part installed on a lower part of the entrance and connected to an exhaust duct to discharge air to the outside; an air shower part installed on an upper part of the entrance to spray air toward the user; and a system controller for controlling the operation of the air shower part and the exhaust part, wherein the discharge of air in the entrance by the exhaust part is caused by a difference between the air pressure of the exhaust duct and the air pressure in the entrance.

Description

Negative pressure air shower system at the entrance of a building {NEGATIVE PRESSURE AIR SHOWER SYSTEM AT THE ENTRANCE OF A BUILDING}

The present invention relates to a system provided at the entrance of a residential facility of a building and capable of maintaining the health of users of a building, such as an apartment house, by discharging pollutants such as dust and viruses, which are introduced as the user enters the front door, to the outside.

Many activities outside inevitably stain people's bodies and clothes with harmful substances such as yellow dust or fine dust. While scattering inside the space, it enters the user's respiratory system and harms the user's health.

In particular, clothes stained with various harmful germs and viruses, such as the recently popular corona virus, cause the invention of infectious diseases not only for the person himself but also for his family and other resident cohabitants.

In order to solve this problem, an invention called a front door air shower system has recently been proposed as Registered Patent Publication No. 10-2208997.

As shown in FIG. 1, the front door air shower system is provided in the first space 110 at the bottom of the shoe cabinet where a suction hole is formed on the front so that air can be sucked in and sucks air in the front door 10. An air purifier 200 for purification, a duct 300 for transporting the air purified and discharged from the air purifier 200, and a spray nozzle branching from the duct 300 to supply air into the vestibule 10 ( 310), but the duct 300 and the spray nozzle 310 are formed on the upper side of the first space 110 and are provided in the second space 120 above the shoe cabinet having a door on the front side. . In addition, a detection sensor is provided in the front door 10 so that an air purifier or the like can be operated according to the opening and closing of the front door. The air purifier includes filter units 230 and 240 into which a HEPA filter 234 or the like is inserted. In addition, a photocatalytic lamp 410 for sterilizing bacteria and the like is installed.

Regarding Registration No. 10-2208997, when the user opens the front door 12 and enters the front door 10, the HEPA filter 234 inserted into the filter units 230 and 240 of the air purifier 200 is purified by the As the air is sprayed from the top through the spray nozzle 310, foreign substances on the user's clothing can be brushed off, and the foreign matter separated from the clothing moves back to the air purifier 200 through the first space 110 It is purified by the filter units 230 and 240, and the purified air is sprayed through the spray nozzle 310 again through the duct 300 to have an air circulation structure that shakes off foreign substances on the user's clothing.

In this way, registration number 10-2208997 having an air circulation structure requires periodic inspection and replacement of filters (232, 234) and photocatalyst lamp (410) of the air purifier (200), and if these are not properly managed There is a problem in that fine dust or viruses continue to circulate and stay inside the front door 10, rather harming the user's health. There is a problem that the system operates even when the front door is opened for the purpose.

KR 10-2208997 B1

The present invention is to solve the above problems of the prior art, using negative pressure to completely discharge foreign substances such as fine dust, viruses, bacteria, etc. from the entrance of the building to the outside to protect the user's health, Its purpose is to provide a negative pressure air shower system at the entrance of a building that prevents unnecessary energy resources from being wasted by enabling efficient operation of devices for the purpose.

According to the most preferred embodiment of the present invention for solving the above problems, as installed in the entrance for entering and exiting the building, an opening and closing sensor for detecting the opening and closing operation of the front door, and a motion detection for detecting the motion of the body within the entrance A sensor, an exhaust unit installed in the lower part of the vestibule and connected to an exhaust duct to discharge air to the outside, an air shower unit installed in the upper part of the vestibule and spraying air toward the user, and controlling the operation of the air shower unit and the exhaust unit. The negative pressure air shower system of the building entrance is provided, wherein the exhaust unit discharges the air in the entrance hall by the difference between the air pressure in the exhaust duct and the air pressure in the entrance hall.

At this time, the exhaust unit is installed on the floor of the front door and has a housing having an internal space, an exhaust grill installed on the front of the housing to prevent the inflow of garbage having a larger volume such as fine dust, and an internal space of the housing. It may include an exhaust fan installed to lower the air pressure of the exhaust duct, and an electric damper installed in the inner space of the housing to prevent backflow of air in the exhaust duct to the front door.

In addition, the operation of the air shower unit and the exhaust unit by the system controller is performed only when it is detected that the front door is closed after being opened by the opening and closing sensor and a body motion is detected by the motion sensor after the set time has elapsed. can

In addition, a fine dust sensor is installed inside the front door, and when the amount of fine dust detected by the fine dust sensor is less than a set value, the operation of the air shower unit and the exhaust unit may be stopped.

According to another embodiment of the present invention, a middle door is installed inside the living room side of the front door so that the inner space of the front door can be closed together with the front door, and the middle door has an automatic closing actuator for closing by a system controller. There is provided a negative pressure air shower system at the entrance of a building, characterized in that it is installed.

At this time, the closing operation of the automatic closing actuator may be performed only when the start of opening the front door is detected by the opening/closing sensor without the body motion detection signal by the motion sensor, and in addition, the fine dust sensor inside the front door It is installed, and if the amount of fine dust detected by the fine dust sensor is less than a set value, the automatic closing actuator may be opened.

The negative pressure air shower system of the present invention completely discharges harmful substances such as fine dust, viruses, and bacteria to the outside of the building, thereby preventing the harmful substances from entering the living room, thereby protecting the health of building users and providing a separate It does not use filters or photocatalyst materials, so it is possible to promote convenience and economic feasibility of maintenance.

In addition, the negative pressure air shower system of the present invention operates the air shower unit and the exhaust unit only when the user returns home after going out, thereby preventing energy from being wasted due to unnecessary operation, and the user can use the air shower unit and the exhaust unit as needed. The operation of the unit can be set freely, enabling efficient use.

In addition, the negative pressure air shower system of the present invention has an automatic closing actuator controlled by a system controller installed on the middle door, so that the inside of the entrance is closed to stably and efficiently discharge harmful substances to the outside, and immediately when the front door is opened. The middle door is immediately closed so that outsiders cannot see the inside of the living room, so the user's privacy is protected.

1 is a cross-sectional view of a front door and a structural diagram of an air purifier in which a front door air shower system according to the prior art is installed.
2 is an internal perspective view of a vestibule in which a negative pressure air shower system according to an embodiment of the present invention is installed.
Figure 3 is a flow chart when the operation unit has a standby state of non-operation in the negative pressure air shower system of the present invention.
Figure 4 is a flow chart of another case in which the operating unit has a non-operating standby state in the negative pressure air shower system of the present invention.
Figure 5 is a flow chart when the operating unit operates in the negative pressure air shower system of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the description of the present invention, when the technical idea of the present invention is blurred or unclear due to the detailed description of the known configuration, the description of the configuration of the above known will be omitted.

2 shows the inside of the vestibule 10 in which the negative pressure air shower system according to an embodiment of the present invention is installed, and FIGS. 3 to 5 each show a flow related to the operation of the negative pressure air shower system.

The negative pressure air shower system of the present invention is installed at the entrance 10 for entering and exiting a building, and when returning home or returning to a residential facility including a multi-unit dwelling such as an apartment after outdoor activities, yellow dust on the body or clothing before entering the living room , By enabling the user to enter the living room in a state in which harmful bacteria such as fine dust and viruses (hereinafter referred to as 'fine dust') are removed, and the entire process is automatically performed as the user enters the front door 10, To promote the cleanliness of the living space and to promote the convenience of use.

The negative pressure air shower system of the present invention includes a sensor unit for detecting various situations in the entrance hall (10), an operation unit for removing fine dust, and a system controller (60) for controlling the operation of the operation unit by receiving a detection signal from the sensor unit. made up of

The sensor unit includes an opening/closing sensor 21 for detecting an opening/closing operation of the front door 11 and a motion detection sensor 22 for detecting a motion of a user's body within the front door 10 . The open/close sensor 21 independently detects door open and door closed. In addition to this, a fine dust sensor 23 for detecting the concentration of fine dust in the entrance hall 10 may be further included.

The operating unit includes an air shower unit 30 that shakes off fine dust from the user who has entered the front door 10 after outdoor activities, and an exhaust duct to discharge the air inside the front door 10 containing the fine dust to the outside. 50) and an exhaust unit 40 connected to it.

That is, the air shower unit 30 installed on the upper part of the vestibule 10 injects air at high pressure toward the user to separate the fine dust attached to the user's body and clothes and move it to the lower part, Installed on the lower part of the vestibule 10 The exhaust unit 40 allows fine dust and the like to be discharged to the outside by using air flow due to negative pressure.

The air shower unit 30 is composed of an air supply means such as an air compressor connected to an air supply duct (not shown) to supply air to the injection sphere 31 and the injection sphere 31 at high pressure. The injection sphere 31 is composed of a plurality of air injection ports 32, and it is preferable that the air injection can be made to all surfaces of the user's body standing in the front door 10 while moving in front and rear directions.

In addition, the air supply duct constituting the air shower unit 30 may be connected to the outside of the building so that the air injected through the air injection hole 32 may be introduced from the outside. However, in this case, if the quality of the outside air is very poor, this may cause a problem of inflow of fine dust from the outside. In addition, in winter, there is room for wasting heat energy by lowering the temperature of the porch 10 due to the cold air outside.

Therefore, the air supply duct is connected to the room so that clean air can be supplied to the air injection port 32, or at least the user selects the air supply duct in consideration of the quality of the outside air and the outside temperature in a state where it is connected to the inside and the outside of the building together. It is preferable to ensure that any one of indoor air and outdoor air can be supplied by the.

The discharge of air in the vestibule 10 by the exhaust unit 40 is made by the difference between the air pressure in the exhaust duct 50 and the air pressure in the vestibule 10. For this purpose, the exhaust unit 40 will be described later. As described above, an exhaust fan 43 may be installed.

The exhaust unit 40 is installed below the vestibule 10, and according to a specific embodiment, a housing 41 installed on the bottom of the vestibule 10 and connected to the exhaust duct 50 while having an internal space; An exhaust grill 42 installed on the front of the housing 41, an exhaust fan 43 installed in the inner space of the housing 41 to lower the air pressure of the exhaust duct 50, and an exhaust unit 40 It consists of a backflow prevention electric damper 44 installed in the inner space of the housing 41 to prevent backflow of air inside the vestibule 10.

As the exhaust fan 43 operates, the exhaust grill 42 passes fine dust, etc., but filters indoor trash such as vinyl having a larger volume than this, and prevents these trash from entering the exhaust duct 50, In addition to preventing the clogging of the exhaust duct 50 from occurring, unauthorized discharge of indoor garbage to the outside through the exhaust duct 50 is prevented.

All controls such as operation and stop of the air shower unit 30 and the exhaust unit 40 are performed by the system controller 60, and preferably, the inside of the front door 10 is sealed, that is, the front door ( 11) and the middle door 12 installed inside the living room side of the front door 10 are all closed.

The system controller 60 uses the detection signals received from each sensor of the sensor unit to check the opening and closing of the front door 11, the timing of detecting the user's body motion, and the quality of air in the front door 10, The operating unit composed of the air shower unit 30 and the exhaust unit 40 commands its operation and stop.

For example, the system controller 60 checks the detection order of the opening/closing sensor 21 and the motion detection sensor 22 and the time interval between them to determine whether the front door 11 is opened for the user to enter or leave the room. Whether it is for the purpose or for receiving the goods at the front door 10 by courier or the like is judged, and measures are taken accordingly.

The operation of the air shower unit 30 and the exhaust unit 40 by the system controller 60 will be described with reference to FIGS. 3 to 5 for each of the above cases.

When the front door 11 is opened, the opening/closing sensor 21 detects it and transmits it to the system controller 60. Upon receiving the door open signal, the system controller 60 checks whether there has been a detection signal from the motion detection sensor 22 prior to the set time.

Here, the time setting for determining whether or not there is a detection signal of the motion detection sensor 22 described above is a case in which the indoor user simply stays in the front door 10 without opening and closing the front door 11, for example, the front door 10 This is to prevent misjudgment of the system controller 60 for the case of coming out to the front door 10 for a while to organize, and the set time is when the user moves between the front door 11 and the position of the motion sensor 22 Based on the time taken, the user can arbitrarily set it.

Next, as shown in FIG. 3, if the motion detection sensor 22 detects a body motion within the set time, the system controller 60 primarily transmits it to the front door 11 for the user to go out. ), or it is determined that the user directly opens the front door 11 to receive courier goods or to have a conversation outside the front door 11 with an outsider, and depending on whether or not the motion sensor 22 operates Make a final judgment on the current situation.

For example, if there is no detection of a body motion by the motion sensor 22 even after a set time has elapsed after the closing of the door by the opening/closing sensor 21 is subsequently detected, the system controller 60 determines that the current situation indicates that the user is out of the house. to make a final judgment In this case, the system controller 60 reduces unnecessary waste of energy by allowing the operating unit to maintain a standby state in which there is no operation for removing fine dust.

However, if there is a subsequent door closing by the opening/closing sensor 21 and detection of a body motion by a motion detection signal, this is for the user in the room to receive a delivery item or to talk outside the front door 11 like the latter. judge Even in this case, the operation of the operation unit is not required, but the system controller 60 may be set so that the operation unit is operated according to the user's selection. Here, the detection of the door closing and the detection of the body motion do not require a sequence, and FIG. 3 illustrates that the detection of the body motion is performed after the detection of the door closing. same.

Unlike in FIG. 3, as shown in FIGS. 4 and 5, if there is no detection signal from the motion detection sensor 22 within the set time, it is determined that the door is opened for a person outside the front door 11 once. . Here, the person outside the front door 11 may be a user returning home after going out, or an outsider such as a courier driver who simply delivers an item at the front door 10 or has a simple conversation. The latter corresponds to a case where a user in the room remotely opens the front door 11 through a monitor panel installed in the living room.

After detecting the door open by the opening/closing sensor 21, as shown in FIG. If another body motion is detected by (22), the system controller 60 determines that the indoor user received an object from the front door 10 or had only a simple conversation with an outsider, so that the user intentionally If the operation of the operation unit is not set, the non-operation standby state of the operation unit is maintained.

However, after detecting the door open by the opening/closing sensor 21, as shown in FIG. 5, immediately detecting the door closing and detecting the motion of the body by the motion sensor 22 after the set time has elapsed from the door opening time In this case, the system controller 60 determines this situation as a situation in which the user returns home after going out and commands the operating unit so that the air shower unit 30 and the exhaust unit 40 can operate simultaneously.

Even here, the detection of door closing and the detection of body motion do not require a sequence, and FIG. 5 illustrates that the detection of the body motion is performed after the detection of door closing. same. However, the operation of the operation unit is performed only when both the detection of the door closing and the detection of the body motion are made. That is, the operation of the air shower unit 30 and the exhaust unit 40 by the system controller 60 detects that the front door 11 has been opened and closed by the opening and closing sensor 21, and the set time has elapsed. It is made only when the body motion is detected by the post-motion sensor 22.

The air shower unit 30 injects the air supplied from the air compressor through the nozzle 32 to the user's body and clothing at high pressure to remove fine dust and the like. At this time, it is preferable to change the spray angle of the spray hole 32 so that the air can be sprayed to all parts of the user's body while the spray sphere 31 composed of the plurality of spray holes 32 moves back and forth, left and right, as described above. same as bar

In the exhaust unit 40, the backflow prevention electric damper 44 opens and the exhaust fan 43 operates to drop the air pressure on the side of the exhaust duct 50.

At this time, as described above, a fine dust sensor 23 for detecting the concentration of fine dust may be further installed in the entrance hall 10, and when the amount of fine dust detected by the fine dust sensor 23 is below a set value, The confirmed system controller 60 stops the operation of the exhaust unit 40 and the air shower unit 30 and closes the backflow prevention electric damper 44 so that the air in the exhaust duct 50 does not flow back toward the front door 10 .

On the other hand, as described above, the negative pressure air shower system of the present invention is preferably made in a state in which the inner space of the entrance hall 10 is closed, so that the middle door 12 is installed inside the living room side of the entrance hall 10. It can be.

At this time, an automatic closing actuator 121 operated by a command of the system controller 60 may be further installed in the middle door 12.

It is preferable that the automatic closing actuator 121 is made only when the start of opening the front door 11 is detected by the opening/closing sensor 21 without a body motion detection signal by the motion sensor 22. For example, when a user passes through the front door 10 to open the front door 11 indoors, it is not necessary to close the middle door 12.

The automatic closing actuator 121 operates only when the middle door 12 is open, and does not lock the middle door 12 by its operation. Accordingly, even if the middle door 12 is closed by the automatic closing actuator 121, the user can open the middle door 12 by hand and enter the room as in a general case.

Of course, through connection with the fine dust sensor 23 and the operation unit, the automatic closing actuator 121 may be configured so that the middle door 12 is automatically opened and operated when the operation unit stops when the amount of fine dust falls below a set value. there is.

In the above, the present invention has been described in detail with reference to specific embodiments, but since the above embodiments are merely examples to make the present invention easier to understand, those skilled in the art are within the scope of the technical idea of the present invention. It is obvious that it will be possible to carry out various modifications within. Therefore, it will be said that such modifications fall within the scope of the present invention as described in the claims.

10; vestibule 11; Main door
12; Chinese 21; open/close sensor
22; motion detection sensor 23; fine dust sensor
30; Air shower unit 31; blast sphere
32; nozzle 40; Exhaust part
41; housing 42; exhaust grill
43; Exhaust fan 44; Electric damper for backflow prevention
50; exhaust duct 60; system controller
121; automatic closing actuator

Claims (7)

As installed in the front door 10 for entering and exiting the building, an opening and closing sensor 21 for detecting an opening and closing operation of the front door 11, and a motion sensor 22 for detecting a motion of the body in the front door 10 And, an exhaust unit 40 installed on the lower part of the vestibule 10 and connected to the exhaust duct 50 to discharge air to the outside, and an air shower unit installed on the upper part of the vestibule 10 and spraying air toward the user ( 30), a middle door 12 installed inside the living room side of the entrance 10 and equipped with an automatic closing actuator 121, the air shower unit 30, the exhaust unit 40, and the automatic closing actuator 121 It consists of a system controller 60 that controls the operation of
The air discharge in the vestibule 10 by the exhaust unit 40 is made by the difference between the air pressure in the exhaust duct 50 and the air pressure in the vestibule 10,
The operation of the air shower unit 30 and the exhaust unit 40 by the system controller 60,
It is made only when it is detected that the front door 11 is closed after opening by the opening and closing sensor 21, and a body motion is detected by the motion sensor 22 after the set time has elapsed,
The closing operation of the automatic closing actuator 121 is performed only when the start of opening the front door 11 is detected by the opening/closing sensor 21 without a body motion detection signal by the motion sensor 22. A negative pressure air shower system at the entrance of a building. According to claim 1,
The exhaust part 40,
A housing 41 having an internal space as installed on the bottom of the entrance hall 10;
An exhaust grill 42 installed on the front of the housing 41 to prevent the inflow of garbage having a larger volume such as fine dust;
An exhaust fan 43 installed in the inner space of the housing 41 to lower the air pressure of the exhaust duct 50;
The negative pressure air shower system of the building entrance, characterized in that composed of a backflow prevention electric damper 44 installed in the inner space of the housing 41 to prevent the air in the exhaust duct 50 from flowing back to the entrance hall 10. delete According to claim 1,
A fine dust sensor 23 is installed inside the entrance 10,
When the amount of fine dust detected by the fine dust sensor 23 is less than the set value, the air shower unit 30 and the exhaust unit 40 stop operating. delete delete According to claim 1,
A fine dust sensor 23 is installed inside the entrance 10,
When the amount of fine dust detected by the fine dust sensor 23 is less than the set value, the opening operation of the automatic closing actuator 121 is performed.

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