Ventilation system using negative and positive pressure

Abstract

An embodiment of the present invention discloses a ventilation system utilizing positive and negative pressure, comprising: a negative pressure device positioned within a patient room and driven by negative pressure; and a positive pressure device positioned in a corridor connected to the patient room and driven by positive pressure. In the case of small wards, a single system appropriately controls the amount of negative pressure and the airflow (exhaust volume) for ventilation to perform both ventilation and negative pressure in a single ward, and such a combined ventilation and negative pressure device is disclosed.

Description

Technology Field

[0001] The present invention relates to a ventilation system using negative pressure and positive pressure. Background Technology

[0002] In the current process where a negative pressure unit is installed in a temporary ward or a specific space, and the negative pressure equipment is operated in the ward, outside air containing contaminated fine dust passes through the negative pressure space and is discharged to the outside through gaps such as hallway ceilings, bathroom and elevator crevices, and ceiling gaps; that is, outside air containing fine dust enters through these gaps, passes through the negative pressure space of the ward, goes through the HEPA filter of the negative pressure unit, and exits to the outside.

[0003] Consequently, the decrease in dissolved oxygen caused by noise and sound pressure exceeding approximately 70 dB leads to oxygen deficiency in patients. In other words, as oxygen saturation can drop to below approximately 92%, there is a problem of oxygen shortage in patients with underlying conditions. Due to this oxygen shortage, oxygen is currently being supplied to individual patients through oxygen supply devices.

[0004] As a result of this, there is even a reported case of a patient who ran out of a negative pressure ward due to oxygen deprivation and spent three hours in the hallway before recovering.

[0005] Furthermore, due to the noise from the negative pressure unit installed in the negative pressure room, isolated patients turn off the unit. Consequently, the HEPA filter installed inside the unit is left contaminated, allowing contaminants to flow back into the room and become a cause of reinfection among the personnel in the negative pressure room. The problem to be solved

[0006] To improve this, negative pressure units (clean air supply, contaminated air exhaust) equipped with a heat recovery type clean and ventilation system are installed in the wards, and

[0007] In the anteroom in front of the patient room or the corridor between patient rooms, an amount of air equal to the sum of the negative pressure discharged from the negative pressure room and the amount of normal air supplied from the external gap when the negative pressure device is in use is supplied to the interior through a positive pressure device (clean air),

[0008] The corridor or anteroom is equipped with a positive pressure system (for supplying insufficient air when using the negative pressure device in the negative pressure room) to supply clean air that is lacking for ventilation and waste heat recovery in the negative pressure room, while partially blocking the inflow of outside air into the corridor or anteroom. The patient room is configured to perform clean ventilation, heat recovery, and negative pressure functions in parallel, thereby creating a negative pressure space that utilizes air that has undergone waste heat recovery, purification, and ventilation throughout the entire patient room and anteroom (corridor). (For example, during negative pressure, approximately 60% to 70% of the operation is for negative pressure, 40% to 30% is for clean ventilation, and the insufficient portion (40% to 30%) is to utilize clean air supplied through the positive pressure device in the anteroom or corridor.) In reality, for an indoor negative pressure of -2.5 Pa, an airflow rate and air velocity are required with a supply air ratio relative to negative pressure, with a ratio of approximately 7.5 for negative pressure and 1.5 for ventilation supply.

[0009] This prevents energy loss contained in indoor air forcibly expelled during negative pressure in summer and winter, absorbs heating and cooling energy to maintain a negative pressure space while performing purification, deodorization, ventilation, and sterilization, and enables the maintenance of a negative pressure room that prevents contamination while minimizing energy loss.

[0010] By installing such a system, sufficient air is supplied from the outside, thereby managing clean indoor air quality (a state in which ultrafine dust, ultrafine dust, moisture, water vapor, and organic compound molecules are removed) in general hospitals or crowded spaces, and securing a sufficient negative pressure space to prevent contamination. Furthermore, through the sufficient supply of oxygen, it can increase the immunity of patients with underlying diseases and block indoor transmission of diseases such as COVID-19, while also eliminating indoor odors and promoting health and well-being for workers in a clean environment.

[0011] In other words, the aim is to configure a negative pressure room capable of heat recovery by maintaining negative pressure and receiving positive pressure air from a corridor or anteroom to compensate for the air shortage caused by the negative pressure maintenance.

[0012] The problems intended to be solved in the embodiments are not limited thereto, and may also include objectives or effects that can be identified from the means of solving the problems or the embodiments described below. means of solving the problem

[0013] The ventilation system according to the present embodiment includes a negative pressure device positioned in a patient room and driven by negative pressure; and a positive pressure device positioned in a corridor connected to the patient room and driven by positive pressure.

[0014] A control unit that controls the above negative pressure device and the above positive pressure device; is included,

[0015] The above control unit can control the amount of negative pressure of the negative pressure device and the amount of positive pressure of the positive pressure device.

[0016] The above negative pressure device discharges fluid inside the hospital room to the outside, and

[0017] The above positive pressure device can introduce fluid into the above corridor.

[0018] The above negative pressure device and the above positive pressure device may include a filter.

[0019] The above amount of negative pressure may be the difference between the amount of exhaust air and the amount of supply air of the above negative pressure device.

[0020] The above exhaust volume may be greater than the above supply volume.

[0021] The above control unit can control the amount of positive pressure to be less than or equal to the amount of negative pressure. Effects of the invention

[0022] According to an embodiment of the present invention, a ventilation system utilizing positive and negative pressure is implemented to suppress the penetration of pathogens in a clean state.

[0023] In addition, a ventilation system utilizing positive and negative pressure can be implemented to maintain a negative pressure room that prevents contamination while minimizing energy loss.

[0024] In addition, a ventilation system utilizing positive and negative pressure can be implemented to realize health promotion in a clean state.

[0025] The various and beneficial advantages and effects of the present invention are not limited to those described above and may be more easily understood in the process of explaining specific embodiments of the present invention. Brief explanation of the drawing

[0026] FIG. 1 is a block diagram of a ventilation system using negative pressure and positive pressure according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating the operation of a ventilation system using negative pressure and positive pressure according to an embodiment, and FIG. 3 is a diagram illustrating another operation of a ventilation system using negative pressure and positive pressure according to an embodiment, and Figure 4 is a flowchart of the operation method of the control unit in a ventilation system using negative pressure and positive pressure. Specific details for implementing the invention

[0027] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0028] Terms including ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be named the first component, and similarly, the first component may be named the second component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0029] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0030] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0031] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0032] Hereinafter, embodiments will be described in detail with reference to the attached drawings, provided that identical or corresponding components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0033] FIG. 1 is a block diagram of a ventilation system using negative pressure and positive pressure according to an embodiment of the present invention, FIG. 2 is a diagram explaining the operation of a ventilation system using negative pressure and positive pressure according to an embodiment, FIG. 3 is a diagram explaining another operation of a ventilation system using negative pressure and positive pressure according to an embodiment, and FIG. 4 is a flowchart of the operation method of a control unit in a ventilation system using negative pressure and positive pressure.

[0034] Referring to FIG. 1, a ventilation system (100) using positive and negative pressure according to an embodiment of the present invention includes a negative pressure device (negative pressure device, 10) placed in a hospital room and driven by negative pressure, and a positive pressure device (positive pressure device, 20) placed in a corridor connected to the hospital room and driven by positive pressure. Hereinafter, the negative pressure device and the negative pressure device are used in combination. And the positive pressure device and the positive pressure device are used in combination.

[0035] 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 also be at least one negative pressure device (10).

[0036] 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, which discharges indoor air to the outside, and supply air, which filters outdoor air and introduces it into the room.

[0037] The positive pressure device (20) may be placed in a corridor connected to the patient room. For example, the positive pressure device (20) may be connected to an anteroom. Or the positive pressure device (20) may be connected to a space separated from the patient room.

[0038] The positive pressure device (20) can perform air supply by filtering outdoor air and introducing it into the interior. Alternatively, the positive pressure device (20) can additionally perform exhaust by discharging indoor air to the outside and air supply by filtering outdoor air and introducing it into the interior.

[0039] The negative pressure device (10) and the positive pressure device (20) may include a filter (e.g., a HEPA filter). Accordingly, foreign substances in the fluid, such as inflow, can be filtered out.

[0040] The control unit (30) can be connected to the negative pressure device (10) and the positive pressure device (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) can receive data regarding the pressure in the room from the negative pressure device (10) or from a sensor (not shown) placed in the hospital room separated from the negative pressure device. Furthermore, the control unit (30) can receive data regarding the pressure in the corridor (or anteroom) from the positive pressure device (20) or from a sensor placed in the corridor (or anteroom) separated from the positive pressure device (20).

[0041] Additionally, the control unit (30) can perform ventilation and negative pressure using either the negative pressure device (10) or the positive pressure device (20). Thus, in a single room (hospital room), by using one negative pressure device of the present invention, the exhaust volume required for negative pressure and the supply volume required for ventilation can be controlled, thereby enabling cleaning, ventilation, and negative pressure to be performed without an additional positive pressure device. That is, cleaning, ventilation, and negative pressure can be performed solely by the ventilation device without a separate positive pressure device in the anteroom.

[0042] For example, the control unit (30) can connect one of the air supply units (first sub-air supply unit) of the negative pressure device (10) to the patient room and the other (second sub-air supply unit) to the anteroom. Furthermore, the control unit (30) can adjust the air supply volume of the second sub-air supply unit to be greater than the air supply volume of the first sub-air supply unit. Also, for example, the air supply volume can be adjusted by the difference in size between the first sub-air supply unit and the second sub-air supply unit. Accordingly, the patient room can be in a negative pressure state. In other words, when the door of the patient room is opened, air can be drawn in from the anteroom connected to the patient room. Furthermore, the control unit (30) can simultaneously perform ventilation for the negative pressure device (10). In other words, the control unit (30) can simultaneously perform supply and exhaust for the negative pressure device (10). Thus, clean air can be drawn into the room (anteroom) and the patient room. And the control unit (30) can maintain a negative pressure state in the hospital room by setting the sum of the air supply volume of the first sub-air supply unit and the air supply volume of the second sub-air supply unit to be equal to the exhaust volume of the exhaust unit.

[0043] In addition, the control unit (30) can adjust the degree of sound 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.

[0044] The control unit (30) can adjust the amount of negative pressure and the amount of 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 negative pressure, or may include said hardware. Furthermore, said method (steps) may be implemented in the form of program instructions that can be executed through various computer means and may be recorded on a computer-readable medium. Also, an embodiment of the present disclosure may be a computer-readable recording medium on which one or more programs including instructions for executing a driving method are recorded.

[0045] Furthermore, the computer-readable medium may include program instructions, data files, data structures, etc., either individually or in combination. The program instructions recorded on the medium may be those specifically designed and configured for the present invention, or they may be those known and available to 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 recording media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, and flash memory. Examples of program instructions include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0046] Here, the device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily. For example, a 'non-transitory storage medium' may include a buffer in which data is stored temporarily.

[0047] According to one embodiment, the operation method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., downloadable app) may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0048] Specifically, it can be implemented as a computer program product comprising a recording medium storing a program that enables the operation method according to the disclosed embodiment to be performed.

[0049] Although the embodiments have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims also fall within the scope of the present invention.

[0050] Looking further at Fig. 2, the following explanation is based on Room 1 among the multiple rooms.

[0051] More specifically, as described above, the negative pressure device (10) can discharge fluid (e.g., air) inside the hospital room to the outside, and the positive pressure device (20) can introduce fluid into the corridor (or anteroom). At this time, the negative pressure device (10) can perform exhaust to discharge fluid inside the hospital room to the outside. In addition, the negative pressure device (10) can perform supply air by filtering outdoor air to introduce clean air into the room, i.e., the inside. At this time, the negative pressure device (10) can perform a negative pressure function by creating a difference between the amount of exhaust (Q1) and the amount of supply air (Q2). Furthermore, by using a negative pressure combined ventilation device (negative pressure device), a ventilation-type negative pressure device can be maintained by appropriately adjusting the amount of ventilation, negative pressure, and supply volume for a single hospital room unit with a single 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 amount of supply air from the first sub-supply unit and the amount of supply air from the second sub-supply unit of the negative pressure combined ventilation device.

[0052] Furthermore, for this negative pressure function, the exhaust volume (Q1) may be greater than the supply volume (Q2). Here, the supply volume (Q2) may be the supply volume within the room or hospital room. Accordingly, the negative pressure volume (MQ) may be the difference between the exhaust volume (Q1) and the supply volume (Q2) of the negative pressure device (10). For example, if the exhaust volume (Q1) is 130 and the supply volume (Q2) is 100, the negative pressure volume (MQ) may be 30. Furthermore, as described above, in another example, the negative pressure state may be maintained by supplying air to the anteroom equal to the negative pressure volume (MQ).

[0053] With this configuration, the hospital room can be in a negative pressure state relative to the corridor, etc. That is, the negative pressure state of the hospital room can be maintained by generating a negative pressure amount by the control unit (30). For example, the pressure (P2) in the corridor can be lower than the pressure (P1) in the hospital room. Therefore, viruses, etc. inside the hospital room may not be able to enter the corridor or the anteroom.

[0054] The positive pressure device (20) can perform air supply by filtering outdoor air and introducing it into the interior. That is, the amount of air supply (Q4) of the positive pressure device (20) can correspond to the amount of positive pressure (PQ).

[0055] In an example, the positive pressure amount (PQ) may be different from or the same as the negative pressure amount (MQ).

[0056] For example, the control unit (30) can maintain the positive pressure (PQ) to be less than or equal to the negative pressure (MQ). Accordingly, the total pressure within the patient room and anteroom can be maintained or slowly reduced. Furthermore, the fluid in the corridor can be discharged to the outside by the positive pressure (PQ). In other words, even when the door opens due to the entry of a person, the fluid inside the room can be exhausted to the outside. That is, the corridor or anteroom can be in a positive pressure state relative to the outside. Thus, the fluid flowing into the corridor or anteroom can be in a clean state after passing through the positive pressure device (20).

[0057] Furthermore, the air introduced from the anteroom or corridor may have a sufficient amount of dissolved oxygen. Accordingly, oxygen deficiency in the patient caused by the decrease in dissolved oxygen during negative pressure can be prevented by driving the negative pressure device (10). As a result, as the oxygen saturation drops to about 92% or less, the oxygen deficiency phenomenon (oxygen deficiency) in patients with underlying diseases is prevented, and the decrease in indoor temperature due to negative pressure can also be easily suppressed.

[0058] Looking further at FIG. 3, the positive pressure device (20) can perform supply air by filtering outdoor air and introducing it into the interior. Additionally, the positive pressure device (20) can perform exhaust air by discharging indoor air to the outside. At this time, the difference between the supply air amount (Q4) and the exhaust air amount (Q3) of the positive pressure device (20) can correspond to the positive pressure amount (PQ). In this case, the exhaust air amount (Q3) may be smaller than the supply air amount (Q4). Thus, ventilation of fluids within the corridor can be easily performed through the positive pressure device (20). Therefore, the air condition within the corridor or anteroom can be maintained in a cleaner state. Furthermore, to maintain a negative pressure state in the hospital room, the control unit can maintain the exhaust air amount discharged to the outside through the negative pressure device (10) to be greater than the supply air amount. Additionally, the control unit can maintain the supply air amount (Q4) introduced into the room or anteroom through the positive pressure device (20) to be greater than the exhaust air amount (Q3). At this time, the positive pressure amount (PQ) may be the difference between the supply air amount (Q4) and the exhaust air amount (Q3). Accordingly, in the embodiment, the negative pressure amount and the positive pressure amount may be +.

[0059] In an example, the positive pressure amount (PQ) may be different from or the same as the negative pressure amount (MQ).

[0060] For example, the control unit (30) can maintain the positive pressure (PQ) to be less than or equal to the negative pressure (MQ). Accordingly, the total pressure within the patient room and anteroom can be maintained or slowly reduced. Furthermore, the fluid in the corridor can be discharged to the outside by the positive pressure (PQ). In other words, even when the door opens due to the entry of a person, the fluid inside the room can be exhausted to the outside. That is, the corridor or anteroom can be in a positive pressure state relative to the outside. Thus, the fluid flowing into the corridor or anteroom can be in a clean state after passing through the positive pressure device (20).

[0061] Alternatively, the control unit (30) can maintain the positive pressure (PQ) to be greater than the negative pressure (MQ). At this time, a large amount of clean air can be introduced into the corridor or anteroom, and the clean air can be introduced back into the patient room. That is, the amount of clean air introduced into the patient room can be increased. Conversely, if the positive pressure (PQ) decreases, the amount of clean air introduced into the patient room can be decreased.

[0062] Referring further to FIG. 4, the control unit can receive data regarding the amount of negative pressure and the amount of positive pressure (S310). As described above, the control unit can maintain a positive amount of negative pressure to maintain the negative pressure of the ward (S340). That is, the amount of exhaust air from the negative pressure device can be maintained greater than the amount of supply air.

[0063] Furthermore, in order to maintain or slowly decrease the total pressure within the patient room and anteroom, the control unit can compare the amount of negative pressure with the amount of positive pressure (S320). For example, if the amount of negative pressure is less than the amount of positive pressure, the negative pressure unit and the positive pressure unit can be controlled to increase the amount of negative pressure or decrease the amount of positive pressure (S330). By driving according to the control of the control unit, the total pressure within the patient room and anteroom can be maintained or slowly decreased, and the negative pressure can be maintained (S340).

Claims

Claim 1 A negative pressure device placed inside the patient room and driven by negative pressure; a positive pressure device placed in the corridor connected to the patient room and driven by positive pressure; and a control unit that controls the negative pressure device and the positive pressure device; wherein the control unit controls the positive pressure amount of the positive pressure device and the negative pressure amount of the negative pressure device, the negative pressure device discharges fluid inside the patient room to the outside, and the positive pressure device performs air supply by filtering outdoor air and introducing it into the anteroom or corridor, a first sub-air supply unit, which is one of the air supply units of the negative pressure device, is connected to the patient room, and a second sub-air supply unit, which is another of the air supply units of the negative pressure device, is connected to the anteroom, and the control unit maintains the patient room in a negative pressure state by adjusting 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 so that the patient room becomes a negative pressure state, or by setting 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 negative pressure device, and the control unit adjusts the positive pressure amount to be greater than the negative pressure amount so that the corridor or the anteroom becomes a positive pressure state relative to the outside, and the positive pressure amount is the air supply amount of the positive pressure device, and the negative pressure A ventilation system in which the amount is the difference between the exhaust amount and the supply amount of the negative pressure device, and both the negative pressure amount and the positive pressure amount are positive (+). Claim 2 delete Claim 3 delete Claim 4 In claim 1, the negative pressure device and the positive pressure device are a ventilation system including a filter. Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 In claim 1, the control unit is a ventilation system that performs ventilation and negative pressure using either the negative pressure device or the positive pressure device.

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