KR20240013634A - Ventilation system using negative and positive pressure - Google Patents

Abstract

An embodiment of the present invention includes a negative pressure device disposed in a hospital room and driven by negative pressure; and a positive pressure device disposed in a hallway connected to a hospital room and driven by positive pressure. A ventilation system using positive pressure and negative pressure is disclosed.
In the case of a small hospital room, one system properly adjusts the amount of negative pressure and the amount of air for ventilation (exhaust amount) to perform both ventilation and negative pressure in one room. A device for both ventilation and negative pressure is disclosed.

Description

Ventilation system using negative and positive pressure}

The present invention relates to a ventilation system using negative and positive pressure.

When a negative pressure device is installed in a simple hospital room or a specific space, when negative pressure equipment is operated in a hospital room where the negative pressure device is installed, external air containing polluted fine dust passes through the negative pressure space and is discharged to the outside, such as on the hallway ceiling, restroom, elevator gap, or ceiling gap. In the process, external air containing fine dust, etc. flows in through the gap, passes through the negative pressure space of the hospital room, and passes through the HEPA filter of the negative pressure machine to the outside.

Accordingly, the decrease in dissolved oxygen that occurs during noise and negative pressure of approximately 70db or more leads to oxygen deficiency in the patient. In other words, oxygen saturation can drop to about 92% or less, so there is a problem of oxygen deficiency in patients with underlying diseases. Due to this oxygen shortage phenomenon, oxygen is being supplied to individual patients again through an oxygen supply device.

As an actual example of this, a patient who rushed out of a negative pressure ward due to oxygen deficiency recovered after spending 3 hours in the hallway.

In addition, due to the noise of the negative pressure machine installed in the negative pressure room, the isolated patient turns off the negative pressure machine, and as a result, the HEPA filter installed inside the negative pressure machine is left in a contaminated state, which can cause contaminant bacteria to flow back into the room, causing the number of people in the negative pressure room to It is causing reinfection.

To improve this, a negative pressure machine (supplying clean air, discharging polluted air) with a heat recovery cleaning and ventilation system was installed in the hospital room.

In the vestibule in front of the patient room or in the hallway between the patient rooms, the amount of air that is the sum of the amount of negative pressure discharged from the negative pressure room and the amount of general air supplied from the external gap when using the negative pressure device is supplied through the positive pressure device (clean air) roll.

Corridors or vestibules are equipped with positive pressure systems (to supply insufficient air when using negative pressure devices in negative pressure rooms) to supply insufficient clean air for ventilation and waste heat recovery in negative pressure rooms. Some corridors or vestibules block external air inflow, and hospital rooms are provided with clean ventilation. And by configuring the heat recovery and negative pressure functions in parallel, a negative pressure space can be created using waste heat recovery and clean, ventilated air for the entire patient room and vestibule (for example, about 60% to 70% of the room when negative pressure is used). Operation for negative pressure, some 40~30% operation for clean ventilation, and the insufficient part (40%~30%) is to use clean air introduced through the positive pressure machine in the vestibule or hallway). Actual -2.5 The indoor sound pressure of pa is approximately for sound pressure (7.5): for ventilation supply (1.5), so wind volume and wind speed in the ratio of supply air supply to sound pressure are required.

This prevents energy loss contained in the indoor air that is forcibly discharged during negative pressure in summer and winter, and absorbs heating and cooling energy to maintain a negative pressure space even while cleaning, deodorizing, ventilation, and sterilizing. It prevents pollution while minimizing energy loss. A negative pressure room can be maintained.

By installing this system, sufficient air is supplied from outside to manage clean indoor air quality (ultra-fine dust, ultra-fine dust, moisture, water vapor, and organic compound molecules removed) in general hospitals or crowded spaces and to prevent pollution. Sufficient negative pressure space can be secured, and sufficient oxygen supply can increase the immunity of patients with underlying diseases and block indoor transmission of COVID-19, as well as remove indoor odors and improve the health of workers in a clean state. .

In other words, the negative pressure room is intended to maintain negative pressure, and to maintain negative pressure, the air that is insufficient is drawn in from the hallway or anteroom section at positive pressure to form a negative pressure room capable of heat recovery.

The problem to be solved in the embodiment is not limited to this, and also includes purposes and effects that can be understood from the means of solving the problem or the embodiment described below.

The ventilation system according to this embodiment includes a negative pressure device disposed in a hospital room and driven by negative pressure; and a positive pressure device disposed in a corridor connected to the patient's room and operating positive pressure.

Includes; a control unit that controls the negative pressure device and the positive pressure device,

The control unit may control the amount of negative pressure of the negative pressure device and the amount of positive pressure of the positive pressure device.

The negative pressure device discharges the fluid in the hospital room to the outside,

The positive pressure device may introduce fluid into the hallway.

The negative pressure device and the positive pressure device may include a filter.

The negative pressure amount may be the difference between the exhaust amount of the negative pressure device and the air supply amount.

The exhaust amount may be greater than the supply air amount.

The controller may control the positive pressure amount to be less than or equal to the negative pressure amount.

According to an embodiment of the present invention, a ventilation system using positive and negative pressure that suppresses the penetration of germs in a clean state is implemented.

In addition, it is possible to implement a ventilation system using positive and negative pressure to maintain a negative pressure room that minimizes energy loss and prevents contamination.

In addition, it is possible to implement a ventilation system using positive and negative pressure that realizes health promotion in a clean state.

The various and beneficial advantages and effects of the present invention are not limited to the above-described content, and may be more easily understood through description of specific embodiments of the present invention.

1 is a block diagram of a ventilation system using negative pressure and positive pressure according to an embodiment of the present invention;
Figure 2 is a diagram explaining the operation of a ventilation system using negative pressure and positive pressure according to an embodiment;
Figure 3 is a diagram explaining another operation of a ventilation system using negative pressure and positive pressure according to an embodiment;
Figure 4 is a flowchart of the operation method of the control unit in a ventilation system using negative pressure and positive pressure.

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

Terms containing ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. Terms are used only to distinguish one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

Figure 1 is a block diagram of a ventilation system using negative pressure and positive pressure according to an embodiment of the present invention, Figure 2 is a diagram illustrating the operation of a ventilation system using negative pressure and positive pressure according to an embodiment, and Figure 3 is a diagram according to the embodiment. This is a diagram explaining another operation of a ventilation system using negative pressure and positive pressure, and Figure 4 is a flowchart of the operation method of the control unit in the ventilation system using negative pressure and positive pressure.

Referring to FIG. 1, a ventilation system 100 using positive pressure and negative pressure according to an embodiment of the present invention includes a negative pressure device (negative pressure machine, 10) placed in a hospital room and driven by negative pressure, and a negative pressure device (10) placed in a corridor connected to the hospital room and driven by positive pressure. Includes a positive pressure device (positive airway pressure device, 20). Hereinafter, negative pressure device and negative pressure device are used interchangeably. Also, positive pressure devices and positive airway pressure devices are used together.

More specifically, the negative pressure device 10 may be placed in a hospital room. There may be at least one hospital room. Accordingly, there may be at least one negative pressure device 10.

The negative pressure device 10 may include a ventilation device that introduces clean air into the room (hospital room). That is, the negative pressure device 10 can perform exhaust air that discharges indoor air to the outside and air supply that filters outdoor air and flows it inside.

The positive airway pressure device 20 may be placed in a hallway connected to a hospital room. For example, the positive airway pressure device 20 may be connected to the anterior chamber. Alternatively, the positive airway pressure device 20 may be connected to a space separate from the hospital room.

The positive airway pressure device 20 can filter outdoor air and supply air into the interior. Alternatively, the positive pressure machine 20 may additionally perform exhaust air that discharges indoor air to the outside and supply air that filters outdoor air and flows it inside.

The negative pressure device 10 and the positive pressure device 20 may include a filter (eg, a HEPA filter, etc.). Accordingly, foreign substances in the inflowing fluid may be filtered.

The control unit 30 may be connected to the negative pressure machine 10 and the positive pressure machine 20. The control unit 30 can control the amount of negative pressure of the negative pressure device 10 and the amount of positive pressure of the positive pressure device 20. Furthermore, the control unit 30 may receive data about the pressure in the room from the negative pressure device 10 or a sensor (not shown) placed separately from the negative pressure device in the hospital room. Furthermore, the control unit 30 may receive data about the pressure in the hallway (or anteroom) from the positive airway pressure device 20 or a sensor placed separately from the positive pressure device 20 in the hallway (or anteroom).

Additionally, the control unit 30 may perform ventilation and negative pressure using either the negative pressure device 10 or the positive pressure device 20. As a result, it is possible to control the amount of exhaust air required for negative pressure and the amount of air supplied for ventilation using one negative pressure device of the present invention in one room (hospital room), thereby performing cleaning, ventilation, and negative pressure without an additional positive pressure device. In other words, the ventilation device alone can perform cleaning, ventilation, and negative pressure without a separate positive pressure device in the front room.

For example, the control unit 30 may connect one of the air supply units of the negative pressure device 10 (the first sub-air supply unit) to the hospital room and connect the other one (the second sub-air supply unit) to the anteroom. Furthermore, the control unit 30 can adjust the air supply amount of the second sub air supply unit to be greater than the air supply amount of the first sub air supply unit. Additionally, for example, the amount of air supply may be adjusted by the difference in size between the first sub-air supply unit and the second sub-air supply unit. Accordingly, the hospital room may be in a negative pressure state. In other words, when the door to a hospital room is opened, air may flow in from the front room connected to the hospital room. Furthermore, the control unit 30 can simultaneously perform ventilation for the negative pressure machine 10. In other words, the control unit 30 can simultaneously supply and exhaust air to the negative pressure machine 10. As a result, clean air can be introduced into the room (anteroom) and hospital room. In addition, the control unit 30 sets the sum of the air supply amount of the first sub-air supply unit and the air supply amount of the second sub-air supply unit to be equal to the exhaust amount of the exhaust unit, thereby maintaining a negative pressure state in the hospital room.

Additionally, the control unit 30 may adjust the degree of negative pressure by adjusting the difference between the air supply amount of the first sub air supply unit and the air supply amount of the second sub air supply unit.

The control unit 30 can adjust the amount of negative pressure and positive pressure based on the received data. The control unit 30 may include a processor. Accordingly, the control unit 30 may be hardware that performs each step or software for a method for driving sound pressure, or may include the hardware. Furthermore, the method (steps) may be implemented in the form of program instructions that can be performed through various computer means and recorded on a computer-readable medium. In addition, embodiments of the present disclosure include instructions for executing the driving method. It can be a computer-readable recording medium on which one or more programs are recorded.

And the computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

Here, the device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term is used when data is semi-permanently stored in the storage medium. There is no distinction between temporary storage and temporary storage. For example, a 'non-transitory storage medium' may include a buffer where data is temporarily stored.

According to one embodiment, the driving method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smartphones) or online. In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) is stored on a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server. It can be temporarily stored or created temporarily.

Specifically, it may be implemented as a computer program product including a recording medium in which a program for performing the driving method according to the disclosed embodiment is stored.

Although the embodiments have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also included in the scope of the present invention. belongs to

Looking further at Figure 2, the following description will be based on hospital room 1 among a plurality of hospital rooms.

More specifically, as described above, the negative pressure device 10 discharges fluid (eg, air) in the hospital room to the outside, and the positive pressure device 20 can introduce fluid into the hallway (or anteroom). At this time, the negative pressure device 10 can perform exhaust to discharge the fluid in the hospital room to the outside. In addition, the negative pressure device 10 can filter outdoor air and supply clean air into the room, that is, into the interior. At this time, a difference occurs between the exhaust amount (Q1) and the air supply amount (Q2), so that the negative pressure device 10 can perform a negative pressure function. In addition, by using a negative pressure ventilator (negative pressure machine), a ventilation-type negative pressure device can be maintained by appropriately controlling the ventilation, negative pressure amount, and supply amount in one hospital room with one system. The above description can be applied in the same way. That is, negative pressure and ventilation can be achieved in the hospital room by adjusting the air supply amount of the first sub-air supply part and the air supply amount of the second sub-air supply part of the negative pressure ventilation device.

Furthermore, for this negative pressure function, the exhaust quantity (Q1) may be larger than the supply air quantity (Q2). Here, the amount of air supplied (Q2) may be the amount of air supplied indoors or in a hospital room. Accordingly, the negative pressure amount (MQ) may be the difference between the exhaust amount (Q1) and the air supply amount (Q2) of the negative pressure machine (10). For example, if the exhaust amount (Q1) is 130 and the supply air amount (Q2) is 100, the negative pressure amount (MQ) may be 30. Furthermore, as described above, in another example, air may be supplied to the anterior chamber equal to the negative pressure quantity (MQ) and the negative pressure state may be maintained.

Due to this configuration, the hospital room can be in a negative pressure state relative to the hallway, etc. In other words, by generating an amount of negative pressure by the control unit 30, the negative pressure state in the hospital room can be maintained. For example, the pressure (P2) in the hallway may be smaller than the pressure (P1) in the hospital room. Therefore, viruses in the hospital room may not enter the hallway or front room.

The positive airway pressure device 20 can filter outdoor air and supply air into the interior. That is, the air supply amount (Q4) of the positive pressure device 20 may correspond to the positive pressure amount (PQ).

In embodiments, the positive pressure quantity (PQ) may be different from or the same as the negative pressure quantity (MQ).

For example, the control unit 30 may maintain the positive pressure amount (PQ) below the negative pressure amount (MQ). Accordingly, the overall pressure within the patient room and the anteroom may be maintained or slowly decreased. Furthermore, the fluid in the hallway can be discharged outdoors by positive pressure (PQ). In other words, even when the door is opened as a person enters, the fluid inside the room may be discharged to the outside. In other words, the hallway or vestibule may be in a positive pressure state relative to the outdoors. Accordingly, the fluid flowing into the hallway or anteroom may be in a clean state after passing through the positive pressure device 20.

Furthermore, the air introduced from the front room or hallway may have a sufficient amount of dissolved oxygen. Accordingly, it is possible to prevent oxygen deficiency in the patient due to a decrease in dissolved oxygen that occurs during negative pressure by being driven by the negative pressure device 10. As a result, as oxygen saturation falls to about 92% or less, oxygen deficiency (oxygen deficiency) in patients with underlying diseases is prevented, and the decrease in indoor temperature due to negative pressure can also be easily suppressed.

Looking further at FIG. 3, the positive airway pressure device 20 can filter outdoor air and supply air into the interior. Additionally, the positive airway pressure device 20 can perform exhaust to discharge indoor air to the outside. At this time, the difference between the air supply amount (Q4) and the exhaust air amount (Q3) of the positive pressure device 20 may correspond to the positive pressure amount (PQ). In this case, the exhaust amount (Q3) may be smaller than the air supply amount (Q4). Accordingly, ventilation of the fluid in the hallway can be easily performed through the positive airway pressure device 20. Accordingly, the air condition in the hallway or vestibule can be maintained in a cleaner state. Furthermore, in order to maintain a negative pressure state in the hospital room, the control unit may maintain the amount of exhaust discharged to the outside through the negative pressure machine 10 to be greater than the amount of supply air. Additionally, the control unit can maintain the amount of air supplied (Q4) flowing into the room or anteroom through the positive airway pressure device 20 to be greater than the amount of exhaust air (Q3). At this time, the positive pressure amount (PQ) may be the difference between the air supply amount (Q4) and the exhaust air amount (Q3). Therefore, in an embodiment, the amount of negative pressure and the amount of positive pressure may be +.

In embodiments, the positive pressure quantity (PQ) may be different from or the same as the negative pressure quantity (MQ).

For example, the control unit 30 may maintain the positive pressure amount (PQ) below the negative pressure amount (MQ). Accordingly, the overall pressure within the patient room and the anteroom may be maintained or slowly decreased. Furthermore, the fluid in the hallway can be discharged outdoors by positive pressure (PQ). In other words, even when the door is opened as a person enters, the fluid inside the room may be discharged to the outside. In other words, the hallway or vestibule may be in a positive pressure state relative to the outdoors. Accordingly, the fluid flowing into the hallway or anteroom may be in a clean state after passing through the positive pressure device 20.

Alternatively, the control unit 30 may maintain the positive pressure amount (PQ) to be greater than the negative pressure amount (MQ). At this time, a large amount of clean air may flow into the hallway or anteroom, and the clean air may flow back into the hospital room. In other words, the amount of clean air flowing into the hospital room can be increased. Conversely, a decrease in positive pressure (PQ) can reduce the amount of clean air entering the hospital room.

Referring further to FIG. 4, the control unit may receive data on the amount of negative pressure and the amount of positive pressure (S310). As described above, the control unit may maintain a positive negative pressure amount to maintain the negative pressure in the hospital room (S340). In other words, the exhaust amount of the negative pressure machine can be maintained larger than the air supply amount.

Furthermore, in order to maintain or slowly reduce the total pressure in the hospital room and the anteroom, the control unit may compare the amount of negative pressure and the amount of positive pressure (S320). For example, when the amount of negative pressure is smaller than the amount of positive pressure, the negative pressure device and the positive pressure device can be controlled to increase the amount of negative pressure or decrease the amount of positive pressure (S330). By operating under the control of the controller, the total pressure in the hospital room and the anteroom can be maintained or slowly reduced, thereby maintaining negative pressure (S340).

Claims (8)

A negative pressure device placed in the hospital room and driven by negative pressure; and
A ventilation system using positive pressure and negative pressure, including a positive pressure device disposed in a corridor connected to a hospital room and driven by positive pressure.
According to paragraph 1,
Includes; a control unit that controls the negative pressure device and the positive pressure device,
The control unit is a ventilation system that controls the amount of negative pressure of the negative pressure device and the amount of positive pressure of the positive pressure device.
According to paragraph 2,
The negative pressure device discharges the fluid in the hospital room to the outside,
The positive pressure device is a ventilation system that introduces fluid from the hallway into the hospital room.
According to paragraph 3,
A ventilation system wherein the negative pressure device and the positive pressure device include a filter.
According to paragraph 3,
A ventilation system in which the amount of negative pressure is the difference between the amount of exhaust air and the amount of supply air of the negative pressure device.
According to clause 5,
A ventilation system wherein the exhaust amount is greater than the supply air amount.
According to paragraph 3,
The control unit is a ventilation system that controls the amount of positive pressure to be less than or equal to the amount of negative pressure.
According to paragraph 2,
The control unit is a ventilation system that performs ventilation and negative pressure using any one of the negative pressure device and the positive pressure device.