Method for controlling ventilation of ventilation space, ventilation facility, and ventilation system

Abstract

An embodiment of the present application provides a method for controlling ventilation of a ventilation space in which an air flow inlet and an air flow outlet are provided, and gas is exchanged with the outside via the air flow inlet and the air flow outlet. The method is characterized by comprising: a step for specifying information on a combination of opening and closing satisfying a target condition on the basis of information on an air stagnation region in the ventilation space; and a step for generating control information for controlling an opening / closing state and / or an opening / closing time of the air flow inlet and / or the air flow outlet on the basis of the information on the combination of opening and closing. In the present application, by controlling the opening / closing state and / or the opening / closing time of the air flow inlet and the air flow outlet in the ventilation space on the basis of the information on the air stagnation region in the ventilation space, it is possible to facilitate replacement of the gas inside the air stagnation region and the gas outside the air stagnation region in the ventilation space, and to improve air quality and temperature uniformity in the space.

Description

Method for controlling ventilation of a ventilation space, ventilation equipment and ventilation system

[0001] TECHNICAL FIELD Embodiments of the present application relate to the technical field of electromechanical control.

[0002] When pollutants such as formaldehyde, pollen, and dust exist in indoor air, these pollutants are harmful to people's health, so ventilation equipment needs to be installed indoors to purify the air.

[0003] Typically, the installation or placement location of a ventilation system in a room is fixed. Therefore, when the ventilation system installed in a room operates for a certain period of time, the gas flow field in the room tends to stabilize, and stagnant airflow areas, including swirling airflow areas and static airflow areas, may form in some locations in the room. The gas in the stagnant airflow areas has a long age and is poorly mixed, making it difficult to replace the air in the stagnant airflow areas. Therefore, when purifying the air in an indoor space, contaminants are relatively likely to accumulate in the stagnant airflow areas, making it difficult to remove the contaminants from the stagnant airflow areas.

[0004] Furthermore, when adjusting the temperature in the indoor space, it is difficult to replace the air in the stagnant airflow area, making it difficult to adjust the temperature in the stagnant airflow area, resulting in uneven indoor temperatures.

[0005] Patent Document 1 discloses a technology that combines the opening and closing of an airflow inlet and an airflow outlet in a ventilation system to control the amount of air supplied to a first area that requires ventilation to be smaller than the amount of air supplied to other areas and the amount of air returned to the first area to be larger than the amount of air returned to other areas, thereby preventing contaminants in an area that requires ventilation from spreading to other areas.

[0006] Patent Document 2 discloses a technology in which an air supply fan and an exhaust fan are installed for each space, and by adjusting the rotation speed of the air supply fan and the exhaust fan, it becomes possible to adjust the air supply volume and the exhaust volume, and it becomes possible to adjust the air volume for each space.

[0007] Patent Document 3 discloses a technology in which the ventilation method is determined based on the actual needs such as the ventilation speed in the room, the cost of energy consumption, the process, etc., and different ventilation modes are switched to achieve different degrees of purification of the indoor air.

[0008] It should be noted that the introduction of the background art above is intended to clearly and completely explain the technical solutions of the present application and is merely provided for the convenience of those skilled in the art, and these solutions should not be deemed to be publicly known by those skilled in the art simply because they have been described in the background art section of the present application.

[0009] The inventors of the present invention discovered the following. In the above-mentioned Patent Document 1, the combination of opening and closing the airflow inlet and airflow outlet is determined based on the temperature of the human bodies in the space. To maintain unidirectional airflow within the space, the combination of opening and closing must satisfy the condition that the supply air volume of the first area is smaller than the supply air volume of the other areas and the return air volume of the first area is greater than the return air volume of the other areas. As a result, after a certain period of time, a stabilized airflow stagnation area will form within the space. If the first area remains unchanged and the current opening and closing combination is always maintained, the airflow stagnation area will always exist within the space.

[0010] In the above-mentioned Patent Documents 2 and 3, an air inlet and an air outlet equipped with a fan are installed, so that even if the fan stops operating, the air inlet and the air outlet can realize air circulation by the pressure difference between the inside and outside of the space. However, the technical solutions of Patent Documents 2 and 3 only change the flow rate of the air in the space, and the air structure in the space is not significantly changed, and the gas in the stagnant airflow area is still difficult to replace.

[0011] Therefore, the above-mentioned Patent Documents 1 to 3 still have problems such as "it is difficult to discharge contaminants in the stagnant airflow area" or "it is difficult to adjust the temperature in the stagnant airflow area."

[0012] To address at least one of the above technical problems, the embodiments of the present application provide a method, ventilation equipment, and ventilation system for controlling ventilation of a ventilation space, which can improve the air quality and temperature uniformity in the ventilation space by controlling the open / close state and / or open / close time of the airflow inlet and airflow outlet in the ventilation space based on information on the airflow stagnation area in the ventilation space, thereby facilitating the replacement of gas in the airflow stagnation area in the ventilation space with gas outside the airflow stagnation area.

[0013] An example of a first aspect of the present application provides a method for controlling ventilation of a ventilation space that is provided with an airflow inlet and an airflow outlet, and through which gas is exchanged with the outside, comprising the steps of: identifying information on an opening / closing combination that satisfies a target condition based on information on an airflow stagnation area in the ventilation space; and generating control information for controlling the opening / closing state and / or opening / closing time of the airflow inlet and / or the airflow outlet based on the information on the opening / closing combination.

[0014] An example of a second aspect of the present application provides a device for controlling ventilation of a ventilation space that is provided with an airflow inlet and an airflow outlet, and through which gas is exchanged with the outside, the device comprising: an identification unit that identifies information on an opening / closing combination that satisfies a target condition based on information on an airflow stagnation area in the ventilation space; and a control unit that generates control information for controlling the opening / closing state and / or opening / closing time of the airflow inlet and / or the airflow outlet based on the information on the opening / closing combination.

[0015] An embodiment according to a third aspect of the present application provides a ventilation system including at least one ventilation installation and an apparatus for controlling ventilation of a ventilation space as described above.

[0016] One of the beneficial effects of the embodiments of the present application is that by controlling the opening / closing state and / or opening / closing time of the airflow inlet and airflow outlet in the ventilation space based on information on the airflow stagnation area in the ventilation space, it is possible to easily replace the gas in the airflow stagnation area in the ventilation space with the gas outside the airflow stagnation area, thereby improving the air quality and temperature uniformity in the ventilation space.

[0017] With reference to the following description and drawings, particular embodiments of the present invention have been disclosed in detail, clearly showing the manner in which the principles of the present invention can be applied. It is to be understood that the present invention is not limited in scope thereto. The present invention encompasses many alternatives, modifications, and equivalents within the spirit and scope of the appended claims.

[0018] The accompanying drawings in this specification are provided for a further understanding of the embodiments of the present application, constitute a part of the specification, illustrate preferred embodiments of the present invention, and, together with the written description, explain the principles of the present application. It is obvious that the accompanying drawings described below are merely some embodiments of the present application. Those skilled in the art should be able to obtain other embodiments based on the accompanying drawings without any creative effort.

[0023] FIG. 1 is a schematic diagram of a method for controlling ventilation of a ventilation space in the present application.

[0024] FIG. 2 is a schematic diagram of a ventilation space in the present application.

[0025] FIG. 3 is a vertical cross-sectional view of a ventilation space in the present application.

[0026] FIG. 4 is a flowchart for obtaining a predetermined correspondence relationship between information on airflow stagnation areas, target conditions, and information on combinations of opening and closing in the present application.

[0027] FIG. 5 is another flowchart for obtaining a predetermined correspondence relationship between information on airflow stagnation areas, target conditions, and information on combinations of opening and closing in the present application.

[0028] FIG. 6 is a schematic diagram for obtaining a predetermined correspondence relationship between information on airflow stagnation areas, target conditions, and information on combinations of opening and closing in the present application. 1 is another flowchart for acquiring a predetermined correspondence relationship between information on airflow stagnation areas, target conditions, and information on combinations of opening and closing in the present application. FIG. 2 is a schematic diagram for acquiring a predetermined correspondence relationship between information on airflow stagnation areas, target conditions, and information on combinations of opening and closing in the present application. FIG. 3 is a schematic diagram of a room in the present application. FIG. 4 is another schematic diagram of a room in the present application. FIG. 5 is an airflow distribution state at 300 s in a ventilated space in a type 1 ventilation mode in the present application. FIG. 6 is an airflow distribution state at 300 s in a ventilated space in a type 2 ventilation mode in the present application. FIG. 7 is a maximum age of air curve in two types of ventilation modes in a ventilated space in the present application. FIG. 8 is a schematic diagram of an apparatus for controlling ventilation of a ventilated space in the present application. FIG. 9 is a schematic diagram of a ventilation system in the present application. FIG. 10 is a schematic diagram of ventilation equipment in the present application. FIG. 11 is a schematic diagram of an electronic device in the present application.

[0019] These and other features of the present embodiments will become more apparent from the following specification, taken in conjunction with the accompanying drawings. In the specification and accompanying drawings, certain embodiments of the present invention have been specifically disclosed, and some of the embodiments in which the principles of the present embodiments may be employed have been shown. It is to be understood, however, that the present invention is not limited to the described embodiments, but rather, the embodiments described herein are intended to include all modifications, variations, and equivalents falling within the scope of the appended claims.

[0020] In the examples of the present application, the terms "first," "second," etc. are used to distinguish different elements in name, but do not indicate the spatial arrangement or temporal order of those elements, and those elements are not limited by those terms. The term "and / or" includes any or all combinations of one or more of the associated listed terms. The terms "comprise," "include," "comprise," etc. refer to the presence of stated features, elements, elements, or components, but do not exclude the presence or addition of one or more other components, elements, elements, or components.

[0021] In the examples of the present application, the words "one" and "the" indicating a singular aspect include a plural aspect and should be understood broadly as "one type" or "one class," but are not limited to the meaning of "one." Furthermore, the term "said" should be understood to include both the singular and plural aspects, unless otherwise specified in the preceding and following sentences. Furthermore, the term "according to" should be understood to mean "at least in part according to ...," unless otherwise specified in the preceding and following sentences, and the term "based on" should be understood to mean "at least in part based on ...," unless otherwise specified in the preceding and following sentences. In the present application, "plurality" indicates "two or more than two."

[0022] The described and / or illustrated features of one embodiment may be used in the same or similar manner in one or more other embodiments, and may be combined with or substituted for the features of the other embodiments. The term "comprises" is used in this text to indicate the presence of a component, integral member, step or member, but does not exclude the presence or addition of one or more other components, integral members, steps or members.

[0023] <Example of First Aspect> An example of the present application provides a method for controlling ventilation of a ventilation space. Fig. 1 is a schematic diagram of a method for controlling ventilation of a ventilation space in an example of the present application. As shown in Fig. 1, the method for controlling ventilation of the ventilation space includes an operation 101 of identifying information on an opening / closing combination that satisfies a target condition based on information on an airflow stagnation area in the ventilation space, and an operation 102 of generating control information for controlling the opening / closing state and / or opening / closing time of an airflow inlet and / or an airflow outlet in the ventilation space based on the information on the opening / closing combination.

[0024] In an embodiment of the present application, by controlling the opening / closing state and / or opening / closing time of the airflow inlet and airflow outlet in the ventilation space based on information on the airflow stagnation area in the ventilation space, it is possible to facilitate the replacement of gas within the airflow stagnation area in the ventilation space with gas outside the airflow stagnation area, thereby improving the air quality and temperature uniformity in the ventilation space.

[0025] In this application, a ventilated space is a space that requires gas replacement, i.e., a space into which airflow flows. The purpose of gas replacement may be to improve the air quality, temperature, humidity, etc. within the ventilated space. The term "outside" refers to the space outside the ventilated space, i.e., the space from which the airflow flows out. For example, the ventilated space may be the interior of a facility, object, or building, and the term "outside" may be the exterior of a facility, object, or building, but is not limited thereto in this application. The ventilated space has an airflow inlet and an airflow outlet, which allow gas to be exchanged with the outside through the airflow inlet and the airflow outlet, and further allow adjustment of the air quality, temperature, humidity, etc. within the ventilated space. The airflow inlet is an inlet through which airflow enters the ventilated space from the outside, and the airflow outlet is an outlet through which airflow is discharged from the ventilated space to the outside.

[0026] In the present application, the opening and closing of the airflow inlet and the airflow outlet may be realized by controlling the opening and closing of corresponding (electric or manual) valves. The valves may be provided in the ducts or at the airflow inlet and the airflow outlet (for example, electric louvers). This is not limited thereto.

[0027] In some embodiments, the ventilation space is provided with a ventilation system that allows gas to be exchanged between the ventilation space and the outside. The ventilation system may include two types of ventilation systems: a fan-equipped or electronic ventilation system, and a fanless or mechanical ventilation system. The fan-equipped or electronic ventilation system may be, for example, a ventilation fan system, a fresh air system, an air conditioning system, an air purification system, an air sterilization / disinfection system, etc. The fanless or mechanical ventilation system may be, for example, a ventilation valve, a window, a door, etc. When the ventilation system has a fan, the interior thereof belongs to the outside of the ventilation space, and the exterior thereof belongs to the ventilation space.

[0028] In some embodiments, a ventilation system includes at least one ventilation opening, which may be an exhaust opening, an intake opening, or both an intake opening and an exhaust opening. That is, a ventilation opening may have only one function (intake opening or exhaust opening) or two functions (intake opening and exhaust opening) simultaneously. For example, an open door or window (i.e., a ventilation opening) may have both an intake opening and an exhaust opening. Due to the different pressure differentials between the inside and outside of the door or window, the door or window may function as an intake opening at certain times and as an exhaust opening at other times. Therefore, even if a ventilation system without a fan or a mechanical ventilation system, such as a door or window, includes only one ventilation opening, it may be capable of intake or exhaust at different times, i.e., it may be switchable between an intake opening and an exhaust opening. Correspondingly, whether the ventilation opening is an intake opening or an exhaust opening can be determined based on the airflow direction or other manner at the ventilation opening. The specific manner is not limited herein.

[0029] In some embodiments, when the ventilation equipment is equipped with a fan, the airflow inlet of the ventilation space may be the exhaust port of the ventilation equipment, and the airflow outlet of the ventilation space may be the intake port of the ventilation equipment.

[0030] In some other embodiments, when the ventilation equipment is not equipped with a fan, e.g., a window, a door, etc., the airflow inlet and / or the airflow outlet of the ventilation space may be a vent of the ventilation equipment.

[0031] That is, the ventilation opening (exhaust opening and / or intake opening) of the ventilation equipment provided in the ventilation space may be used as the airflow inlet and / or airflow outlet of the ventilation space.

[0032] In some embodiments, the airflow inlet and the airflow outlet of the ventilation space may be provided in at least two ventilation devices. The two ventilation devices may be the same type of ventilation device or different types of ventilation devices. The airflow inlet and the airflow outlet of the ventilation space may be provided in at least two ventilation devices. Typically, the ventilation outlets of the two ventilation devices are installed far apart (for example, the ventilation outlets of the air purifier and the air conditioner may be installed at the bottom and top of the ventilation space in the vertical direction, respectively, and may be located at different horizontal positions). Therefore, when the ventilation outlets are switched between open and closed states, the gas in the ventilation space can be disturbed to the maximum extent or within the maximum range, resulting in a better gas replacement effect.

[0033] In some other embodiments, the airflow inlet and the airflow outlet of the ventilation space may be provided by only one ventilation device.

[0034] In the present application, the type of stagnant airflow region may include, but is not limited to, at least one of a swirling airflow region and a static airflow region. In the swirling airflow region and the static airflow region, there is almost no gas exchange, or the gas exchange intensity is weak, the gas exchange effect is poor, and the degree of gas mixing is low. For example, in the static airflow region, the gas flow velocity value is very small, close to 0, i.e., the gas flow velocity is lower than a predetermined gas flow velocity threshold.

[0035] In some embodiments, the information on the airflow stagnation region may include, but is not limited to, at least one of the following: position information and size information of the airflow stagnation region; particulate matter concentration (e.g., PM2.5, PM10) within the airflow stagnation region; air component concentration (e.g., CO2 concentration); temperature; humidity; and the like. Here, the position information may include two-dimensional plane position information (e.g., position information on two-dimensional coordinate planes xOy, yOz, and zOx, specifically including two-dimensional coordinate information); three-dimensional spatial position information (e.g., three-dimensional coordinate information); or the position information may be a rough position such as the upper left, lower right, or center. The size information may include area size, volume size, etc. It should be understood that the position information and size information of the airflow stagnation region in this application are information that can indicate the position and size of the airflow stagnation region, and the temperature and humidity may be average or maximum values ​​within the airflow stagnation region. The specific representation format and calculation method of the above information are not limited in this application.

[0036] In the present application, the target conditions may include, but are not limited to, at least one of: an air parameter reaching a predetermined parameter threshold; a time taken for the air parameter to reach the air parameter threshold being less than a predetermined time threshold; an energy consumption of the ventilation equipment being less than a predetermined energy consumption threshold; a user status; a user ID; and a user preference.

[0037] In this application, the air parameters may include, but are not limited to, at least one of particulate matter concentration, air component concentration (e.g., CO2 concentration), temperature, humidity, air flow velocity, and air flow direction.

[0038] In some embodiments, the air parameter reaching a predetermined parameter threshold may be, for example, a particulate matter concentration less than a threshold, or an air component concentration less than a threshold, or a temperature greater than or less than a threshold, or a humidity greater than or less than a threshold, or an air flow velocity greater than a threshold, or multiple air flow directions.

[0039] In some embodiments, the time it takes for the air parameter to reach the air parameter threshold value being less than a predetermined time threshold may, for example, mean that the time it takes for the concentration of particulate matter to fall below a certain threshold is less than a predetermined time threshold.

[0040] In some embodiments, the energy consumption of the ventilation equipment being less than a predetermined energy consumption threshold may, for example, mean that the energy consumption of the ventilation equipment is less than a predetermined energy consumption threshold under the condition that the air parameter reaches the air parameter threshold.

[0041] In some embodiments, the user's state, user ID, or user preference may be an air parameter threshold value set according to the user's state, user ID, or user preference, or information on an open / close combination corresponding to the user's state, user ID, or user preference may be selected, and specifically, the information on the open / close combination corresponding to the user's state, user ID, or user preference may be checked in a predetermined data table by a table check method. The predetermined data table may record information on the open / close combination corresponding to the user's state, user ID, or user preference, and may further record energy consumption corresponding to the open / close combination.

[0042] In the present application, the information on the combination of opening and closing states may include the combination of the opening and closing states of the airflow inlet and the airflow outlet in the ventilation space and / or the opening and closing times. The opening and closing states of the airflow inlet or the airflow outlet in the ventilation space may include, but are not limited to, a fully open state, a fully closed state, and a half-open state between the fully open and fully closed states. In other words, the opening and closing states of the ventilation openings (exhaust and / or intake vents) of the ventilation equipment provided in the ventilation space may include, but are not limited to, a fully open state, a fully closed state, and a half-open state between the fully open and fully closed states. The opening and closing times refer to the duration of the opening and closing states or the time points for switching between the opening and closing states.

[0043] In some embodiments, when there is an airflow stagnation area in the ventilation space, it is possible to select information on an opening / closing combination different from that in the current stage, and control the opening / closing state and / or opening / closing time of the airflow inlet and / or the airflow outlet according to control information generated based on the information on the different opening / closing combination, thereby disrupting the steady state of the airflow in the ventilation space, disturbing the airflow organization in the ventilation space, further disrupting the airflow stagnation area, and allowing the original gas in the airflow stagnation area to be replaced, thereby improving the air quality and / or temperature uniformity in the ventilation space.

[0044] In some embodiments, if there is no airflow stagnation area in the ventilation space, the same opening / closing combination information as in the current stage can be selected, and the opening / closing state and / or opening / closing time of the airflow inlet and / or airflow outlet can be controlled by control information generated based on the same opening / closing combination information.

[0045] Of course, in some other embodiments, the present application generates new control information directly based on information on opening / closing combinations that are different from the information on opening / closing combinations at the current stage, and the information on different opening / closing combinations before and after will disrupt the steady state of the airflow in the ventilation space, disturb the airflow organization in the ventilation space, and then disrupt the airflow stagnation area, allowing the original gas in the airflow stagnation area to be replaced, leading to an improvement in the air quality and / or temperature uniformity in the ventilation space.

[0046] In still other embodiments, the present application may generate new control information by selecting, from among the at least two types of information on opening and closing combinations, information on an opening and closing combination different from information on the opening and closing combination at the current stage, randomly, sequentially, or according to a predetermined rule. Compared to the above embodiments, the present application may directionally select information on an opening and closing combination based on information on an airflow stagnation area in the ventilation space, and thereby achieve the objective that the ventilation result satisfies the target condition (e.g., the target condition that the user is trying to achieve).

[0047] In the present application, at least one of the airflow inlet and the airflow outlet in the ventilation space is in a fully open or half-open state. This ensures that the ventilation space is always in a ventilated state. However, the present application is not limited thereto, and the airflow inlet and the airflow outlet in the ventilation space may both be in a closed state within a short period of time. The short period of time referred to here may be, for example, several seconds or several minutes.

[0048] In the present application, the airflow inlet in the ventilation space (or the exhaust port and / or the air intake port of the ventilation equipment) and the airflow outlet in the ventilation space (or the air intake port and / or the exhaust port of the ventilation equipment) are controllable, i.e., the open / close state and / or the open / close time of the airflow inlet and the airflow outlet can be controlled based on a control signal. In the case of an electronic ventilation equipment, the control signal can be sent to the electronic ventilation equipment to control the exhaust port and / or the air intake port of the electronic ventilation equipment. In the case of a mechanical ventilation equipment, the control signal can be sent to a driving device that drives the opening and closing of the mechanical ventilation equipment to control the exhaust port and / or the air intake port of the mechanical ventilation equipment, or the exhaust port and / or the air intake port of the mechanical ventilation equipment can be controlled by sending a command to a user.

[0049] In some embodiments, the positions of the airflow inlet and airflow outlet in the ventilation space do not change before and after the opening / closing state and / or the opening / closing time are adjusted. For example, the positions of the exhaust and / or intake of the ventilation equipment do not change before and after the opening / closing state and / or the opening / closing time are adjusted. This eliminates the need to change the positions of the ventilation space or the exhaust and intake of the ventilation equipment. That is, the solution can be implemented without changing the existing structure in the ventilation space, which reduces the difficulty of implementation and does not require additional hardware modification costs.

[0050] In some embodiments, if a ventilation equipment has not yet been installed in a ventilation space, a simulation method (e.g., CFD simulation) can be used to simulate the effects of different layouts of the ventilation equipment's intake and exhaust ports under the same opening / closing switching method based on information about the ventilation equipment to be installed (e.g., the type of equipment, the number of intake and exhaust ports, etc.) and information about the ventilation space (e.g., the size and structure of the ventilation space), thereby finding an effective layout pattern for the intake and exhaust ports. Finally, by installing the ventilation equipment according to this layout pattern, and combining it with the opening / closing combination switching method described herein, it is possible to achieve effects such as better air quality or improved temperature uniformity.

[0051] In some embodiments, if the ventilation space already has ventilation equipment installed and the equipment is mobile (e.g., a mobile air purifier or fan), the mobile ventilation equipment can be controlled to move to a predetermined position and then combined with the open / close combination switching method described herein to achieve effects such as better air quality or improved temperature uniformity. Furthermore, the predetermined position may be determined based on information about stagnant airflow areas. This allows the predetermined position to change with the stagnant airflow areas, thereby enabling better treatment of the gas within the stagnant airflow areas.

[0052] Below, with reference to FIG. 2 and Table 1, examples of combinations of the open / closed states of the airflow inlet and the airflow outlet of the ventilation space in this application will be described.

[0053] Fig. 2 is a schematic diagram of a ventilation space in the present application. Table 1 lists combinations of open / closed states of the airflow inlet and the airflow outlet in the ventilation space in Fig. 2.

[0054] There are three types of ventilation equipment that can be installed within a single ventilation space: Type 1 is a system in which all ventilation equipment is mechanical; Type 2 is a system in which all ventilation equipment is electronic; and Type 3 is a system in which the ventilation equipment is both mechanical and electronic. Any number of ventilation equipment (one or more) can be installed for each of the three installation types. Hereinafter, this application will be described using examples of "two mechanical ventilation equipment installed," and / or "two electronic ventilation equipment installed," and / or "one mechanical ventilation equipment and one electronic ventilation equipment installed," but the examples are not limited to these.

[0055] Each ventilation system may be provided with one or more ventilation openings. Mechanical ventilation systems, such as doors or windows, typically have one ventilation opening serving as an intake or exhaust opening. For example, the ventilation openings of a mechanical ventilation system may perform different functions during different time periods. For example, during a first time period, the ventilation openings may function as an intake opening and be used as an intake opening, while during a second time period, the ventilation openings may function as an exhaust opening and be used as an exhaust opening. Typically, electronic ventilation systems are provided with multiple ventilation openings. Hereinafter, the present application will be described with reference to an example in which each electronic ventilation system has two ventilation openings and each mechanical ventilation system has one ventilation opening, but this is not limiting.

[0056] As described above, there are three types of open / closed states for one ventilation opening: fully open, fully closed, and half open. For example, in this application, 1 indicates the fully open state, 0 indicates the fully closed state, and (0 to 1) indicates the half open state.

[0057] As shown in FIG. 2 , the hatched area indicates the ventilation space 100, and the white area indicates the space outside the ventilation space 100. The ventilation space 100 is provided with a mechanical ventilation device 1, a mechanical ventilation device 2, an electronic ventilation device 3, and an electronic ventilation device 4. The mechanical ventilation device 1 has a ventilation opening 11 for ventilating with the ventilation space 100, and the mechanical ventilation device 2 has a ventilation opening 21 for ventilating with the ventilation space 100, where the ventilation opening 11 and the ventilation opening 21 may specifically be an air intake opening and an exhaust opening, respectively. The electronic ventilation device 3 has ventilation openings 31 and 32 for ventilating with the ventilation space 100, where the ventilation openings 31 and 32 are an air intake opening and an exhaust opening, respectively. The electronic ventilation device 4 has ventilation openings 41 and 42 for ventilating with the ventilation space 100, where the ventilation openings 41 and 42 are an air intake opening and an exhaust opening, respectively.

[0058] Table 1 lists all combinations of open / closed states of the airflow inlet and the airflow outlet for the three types of ventilation equipment installation methods.

[0059] For each type of ventilation installation, one or more ventilation devices may be provided, and each ventilation device may be provided with one or more ventilation openings.

[0060] Table 1 explains the example of "two ventilation devices are provided in the ventilation space, and each ventilation device is provided with at least one ventilation opening," but the present application is not limited to this.

[0061] Since one ventilation outlet has three possible open / closed states, the two ventilation outlets have nine possible open / closed state combinations. Table 1 lists only seven of the nine open / closed state combinations and does not include the combination of two ventilation outlets fully open and fully closed. In addition, Table 1 does not list the open / closed time. The open / closed time may be the time required for an air parameter to reach a predetermined parameter threshold and for the energy consumption of the ventilation equipment to be less than a predetermined energy consumption threshold, such as 3 minutes, 5 minutes, or 10 minutes. The open / closed time may be a time set based on experience, but is not limited to this in the present application. The open / closed times of the open / closed state combinations (1) to (7) may be the same or different.

[0062]

[0063] In some embodiments, when identifying the information on the combination of opening and closing, it is possible to select the information on the combination of opening and closing corresponding to the current opening and closing state of the airflow inlet and / or the airflow outlet of the ventilation space different from the current opening and closing state of the airflow inlet and / or the airflow outlet, that is, due to the difference in the opening and closing state of the airflow inlet and / or the airflow outlet before and after the switching, the gas in the ventilation space can be disturbed to the maximum extent or within the maximum range when the opening and closing state of the ventilation opening is switched, and a better effect on the gas replacement can be obtained.

[0064] In the present application, as shown in FIG. 1 , the method for controlling ventilation of the ventilation space further includes an operation 103 of obtaining air parameter information in the ventilation space and identifying information of airflow stagnation areas in the ventilation space based on the air parameter information.

[0065] In the present application, the air parameter information includes the value of an air parameter at a location in the ventilated space and / or the distribution of the air parameter at multiple locations in the ventilated space. As mentioned above, the air parameters may include, but are not limited to, at least one of particulate matter concentration, air component concentration (e.g., CO2 concentration), temperature, humidity, air flow velocity, and air flow direction.

[0066] In this application, there are three methods for obtaining air parameter information in a ventilated space:

[0067] The first type is a method of obtaining air parameter information using data collected by sensors.

[0068] The second type is a method of obtaining air parameter information from the results of a simulation using Computational Fluid Dynamics (CFD).

[0069] The third type is a method of obtaining air parameter information using sensor data and the results of computational fluid dynamics simulations.

[0070] The first method is highly reliable because it can collect actual air parameter information in an actual ventilated space using sensors, but due to spatial limitations of sensors, data collected by a single sensor can only obtain air parameter information at a portion of the ventilated space.

[0071] In some embodiments, the first type of approach may use a single sensor with a fixed position, which only obtains air parameter information at the location where the sensor is located, and based on this, determines whether the location where the sensor is located belongs to an airflow stagnation area.

[0072] In some other embodiments, the first type of approach may use one or more movable sensors, so that the distribution of air parameter information in the ventilated space can be obtained based on the air parameter information from at least two locations, and based on this, stagnation areas of airflow in the ventilated space can be identified.

[0073] In the second method, the results of computational fluid dynamics simulation can be used to obtain air parameter information at all points in the ventilation space, eliminating the need to install sensors in the ventilation space and reducing hardware costs. However, there is a certain deviation between the simulation results and the actual results.

[0074] In the third type of method, the results of a computational fluid dynamics simulation are used for areas that cannot be covered by sensors. Data collected by sensors are used for areas that can be covered by sensors. The sensor data may also be compared with the results of the computational fluid dynamics simulation. If the deviation of the simulation results is within a predetermined range, the simulation results are used, but if it is outside the range, the sensor data is used. The predetermined range may be customized by the user.

[0075] For example, the location and size of the stagnant airflow area are determined by comparing the relationship between the air parameter information and a threshold value. For example, if the air parameter is air flow velocity, and the air flow velocity is smaller than a first velocity threshold, the location is determined to belong to the stagnant airflow area. The size of the stagnant airflow area is determined based on the number of locations where the air flow velocity is smaller than the first velocity threshold.

[0076] Furthermore, the location and size of the airflow stagnation area are determined based on, for example, the rate of change of the air parameter. For example, a location where the rate of change of the air parameter is 0 is determined to belong to the airflow stagnation area. Then, the size of the airflow stagnation area is determined based on the number of locations where the rate of change of the air parameter is 0.

[0077] In some embodiments, the ventilated space may be provided with one or more sensors.

[0078] In some embodiments, the sensor may be installed within a predetermined area in the ventilated space. That is, the sensor may be fixed in position in the ventilated space and may not be movable. In this case, the sensor may acquire air parameter information at the location where the sensor is located. The number of sensors may be at least one, and the type of sensor is not particularly limited, but may be any general sensor capable of detecting air parameter information. This can reduce costs.

[0079] In some other embodiments, the sensor is provided in the ventilation space, and the position of the sensor in the ventilation space can be changed. For example, the sensor is movable. For example, the sensor can move along with an object, such as a human body. In this way, the distribution of air parameter information in the ventilation space can be obtained based on air parameter information at multiple locations, and the airflow stagnation area can be more accurately determined based on the distribution.

[0080] The method for controlling ventilation of a ventilated space according to the present invention will now be described by way of example with reference to FIG.

[0081] FIG. 3 is a vertical cross-sectional view of the ventilation space of the present application.

[0082] In some embodiments, as shown in FIG. 3 , the arrow indicates the vertical direction of the ventilation space 100 and also indicates a vertically upward direction. 100a indicates the bottom or lower part of the ventilation space 100, and 100b indicates the top or upper part of the ventilation space 100. The ventilation space 100 is rectangular in the vertical direction, but this is not limited to this in the present application. Sensors 5, 6, and ventilation equipment 7 are provided in the ventilation space 100, and the ventilation space 100 has air flow inlets 101, 102, air flow outlets 103, and air flow outlets 104. The ventilation equipment 7 is located in the center of the ventilation space 100, and sensors 5 and 6 are located on the left and right sides of the ventilation space 100, respectively. The airflow inlet 101 and the airflow inlet 102 are located at the top 100b of the ventilation space 100, and the airflow outlet 103 and the airflow outlet 104 are located at the bottom 100a of the ventilation space 100, but this is not limited to this in the present application. The ventilation equipment 7 has two ventilation openings 71 and 72, which are located on both the left and right sides of the ventilation equipment 7, respectively, and both ventilation openings 71 and 72 are exhaust openings, but the air intake opening (not shown) of the ventilation equipment 7 may be provided at another position on the ventilation equipment 7, for example, at the bottom. The airflow inlet 101, the airflow outlet 103, and the ventilation opening 71 are for replacing air on the left side of the ventilation space 100, and the airflow inlet 102, the airflow outlet 104, and the ventilation opening 72 are for replacing air on the right side of the ventilation space 100. The ventilation equipment 7 is, for example, an air purifier. Furthermore, for example, the air purifier in the present embodiment may be provided in the bottom space of the ventilation space.

[0083] The positions of the sensor 5, the sensor 6, the ventilation equipment 7, the airflow inlet 101, the airflow inlet 102, the airflow outlet 103, the airflow outlet 104, the ventilation openings 71 and the ventilation openings 72 are not limited to those shown in FIG.

[0084] Both the sensor 5 and the sensor 6 can detect at least one of the concentration of particulate matter, the concentration of air components, the temperature, the humidity, the air flow speed, and the air flow direction in the ventilation space 100.

[0085] Assuming that sensors 5 and 6 are capable of detecting the concentration of particulate matter in the air, the target condition would be that "the concentration of particulate matter in the air is lower than a predetermined concentration threshold," but this application is not limited to this.

[0086] For example, when sensor 5 detects that the concentration of particulate matter in the air exceeds a predetermined concentration threshold, it is determined that the location where sensor 5 is located belongs to an airflow stagnation region. In this case, to satisfy the target condition that "the concentration of particulate matter in the air is lower than a predetermined concentration threshold," the open / closed states of airflow inlet 101, airflow outlet 103, and ventilation opening 71 may be opened, and airflow inlet 102, airflow outlet 104, and ventilation opening 72 may be closed, and the open / closed states of airflow inlet 101, airflow inlet 102, airflow outlet 103, airflow outlet 104, ventilation opening 71, and ventilation opening 72 may be controlled so as to maintain the above-mentioned open / closed states for a certain time t. In other words, by opening the airflow inlet and / or airflow outlet and / or ventilation opening close to the airflow stagnation area, while closing the airflow inlet and / or airflow outlet and / or ventilation opening away from the airflow stagnation area, the steady state of the airflow in the ventilation space is disrupted, and the gas in the airflow stagnation area can be more quickly (purified) by the ventilation equipment 7 and quickly discharged through the airflow outlet 103.

[0087] Similarly, when sensor 6 detects that the concentration of particulate matter in the air exceeds a predetermined concentration threshold, it is determined that the location where sensor 6 is located belongs to an airflow stagnation region. In this case, to satisfy the target condition that "the concentration of particulate matter in the air is lower than a predetermined concentration threshold," airflow inlet 102, airflow outlet 104, and ventilation opening 72 are opened, and airflow inlet 101, airflow outlet 103, and ventilation opening 71 are closed, and the open / closed states of airflow inlet 101, airflow inlet 102, airflow outlet 103, airflow outlet 104, ventilation opening 71, and ventilation opening 72 are controlled so as to maintain the above-mentioned open / closed states for a certain time t.

[0088] As a result, by controlling the opening / closing state and / or opening / closing time of the airflow inlet and airflow outlet in the ventilation space according to the airflow stagnation area in the ventilation space, it is possible to easily replace the gas in the airflow stagnation area in the ventilation space with the gas outside the airflow stagnation area, thereby improving the air quality and temperature uniformity in the ventilation space.

[0089] In some embodiments, in operation 101, information on a combination of opening and closing that corresponds to the information on the stagnation area of ​​airflow and the target condition may be selected from among a plurality of information on a combination of opening and closing, according to a predetermined correspondence relationship between the information on the stagnation area of ​​airflow, the target condition, and the information on a combination of opening and closing.

[0090] Hereinafter, how to obtain the predetermined correspondence between the information on the stagnant airflow area, the target condition, and the information on the combination of opening and closing will be further described with reference to several examples.

[0091] Example 1 In Example 1, a predetermined correspondence relationship between information on stagnant airflow areas, target conditions, and information on combinations of opening and closing is acquired through field experiments.

[0092] FIG. 4 is a flowchart for obtaining a predetermined correspondence relationship between information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in this application.

[0093] As shown in FIG. 4 , obtaining the predetermined correspondence between information on airflow stagnation areas, target conditions, and information on opening / closing combinations includes step 401 of obtaining air parameter information, equipment information on the ventilation equipment, and all combinations of opening / closing states, and step 402 of identifying information on airflow stagnation areas and information on opening / closing combinations that correspond to the target conditions through on-site experiments based on the air parameter information, equipment information on the ventilation equipment, and all combinations of opening / closing states.

[0094] In field experiments, air parameter information may be obtained by sensors.

[0095] The equipment information of the ventilation equipment may include, but is not limited to, the type of equipment, the number of ventilation outlets, the airflow speed of the ventilation outlets, the temperature of the ventilation outlets, the wind direction of the ventilation outlets, the shift indicator of the ventilation outlets, the open / close status of the ventilation outlets, the open / close time of the ventilation outlets, and the operation information of the equipment.

[0096] For the specified ventilation space, its air flow inlets and air flow outlets are known, and therefore all combinations of open / closed states of the air flow inlets and air flow outlets and their quantities are known.

[0097] When the information on the airflow stagnation area and the target conditions are known, all combinations of opening and closing states are tried in sequence, and the air parameter information when each combination of opening and closing states is tried is recorded. The combination of opening and closing states corresponding to the greatest change in the air parameter information is determined to be the combination of opening and closing states for which the airflow stagnation area satisfies the target conditions, and the combination of opening and closing states corresponding to the information on the airflow stagnation area and the target conditions is obtained.

[0098] In some embodiments, after identifying an optimal combination of open and closed states, different time lengths may be tested, and the optimal time may be determined to be the shortest time required to achieve the target condition.

[0099] In some other embodiments, the open / close state and the open / close time may be simultaneously identified in the same step during the course of an experiment.

[0100] This makes it possible to identify information about the stagnant airflow area and information about the combination of opening and closing that corresponds to the target condition.

[0101] An example of how to determine when the air parameter information has changed most will now be described.

[0102] Since the air parameter information was derived from data from the sensors, the greatest change in the air parameter information indicates the greatest change in the data from the sensors.

[0103] Depending on the different installation conditions of the sensors in the ventilation space, the method of determining the most significant change in the data from the sensors will also be different.

[0104] Situation 1: The ventilation space is equipped with one sensor at a fixed position.

[0105] In this case, since only one sensor is provided, the largest change in data from the sensor may be interpreted as the largest change in data from that sensor, where a larger change in data from the sensor indicates a better improvement in air quality.

[0106] Situation 2: Multiple sensors are installed in fixed positions in the ventilation space.

[0107] In this case, the greatest change in data from a sensor may be considered to be the maximum cumulative value of the amount of change in data from a plurality of sensors.

[0108] Situation 3: The ventilation space is provided with one movable sensor.

[0109] In this case, when performing all combinations of open and closed states, the sensor can be moved at the same speed along the same path, and the data from the sensor can be integrated over time, and the largest change in the integrated value can be considered to be the largest change in the data from the sensor.

[0110] Situation 4: The ventilation space is provided with multiple movable sensors.

[0111] In this case, when performing all combinations of open and closed states, multiple sensors can be moved at the same speed along the same path, and the data from the multiple sensors can be integrated over time.The largest cumulative change in the integrated value can be considered to be the greatest change in the data from the sensor.

[0112] FIG. 5 is a schematic diagram for acquiring a predetermined correspondence relationship between information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in this application.

[0113] As shown in Figure 5, air parameter information, equipment information of the mechanical ventilation equipment, and / or equipment information of the electronic ventilation equipment are obtained from sensors, mechanical ventilation equipment, and / or electronic ventilation equipment, respectively, and information on airflow stagnation areas and information on opening and closing combinations corresponding to target conditions are identified through on-site experiments. Then, based on the opening and closing combination information, appropriate control information is generated to control the opening and / or closing state and / or opening and closing time of the exhaust port and / or intake port of the ventilation equipment.

[0114] Once the processing for the currently identified stagnation area is completed, the next on-site experiment will be performed to identify new stagnation areas.

[0115] Second Embodiment In a second embodiment, a predetermined correspondence relationship between information on stagnant airflow regions, target conditions, and information on combinations of opening and closing is acquired from the results of a simulation using computational fluid dynamics.

[0116] FIG. 6 is another flowchart for obtaining a predetermined correspondence relationship among information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in this application.

[0117] As shown in FIG. 6 , obtaining a predetermined correspondence between information on airflow stagnation areas, target conditions, and information on opening / closing combinations includes step 601 of obtaining equipment information on the ventilation equipment, information on the ventilation space, and all combinations of opening / closing states, and step 602 of identifying information on airflow stagnation areas and information on opening / closing combinations corresponding to the target conditions by computational fluid dynamics based on the equipment information on the ventilation equipment, information on the ventilation space, and all combinations of opening / closing states.

[0118] The equipment information of the ventilation equipment may include, but is not limited to, the type of equipment, the number of ventilation outlets, the airflow speed of the ventilation outlets, the temperature of the ventilation outlets, the wind direction of the ventilation outlets, the shift indicator of the ventilation outlets, the open / close status of the ventilation outlets, the open / close time of the ventilation outlets, and the operation information of the equipment.

[0119] For the identified ventilation space, information about the ventilation space is known, and may include, but is not limited to, information about the size of the ventilation space, the construction material of the ventilation space, the geometry of the ventilation space, the location of ventilation equipment in the ventilation space, the residential interior of the ventilation space, the commercial interior of the ventilation space, etc.

[0120] For the specified ventilation space, the airflow inlets and airflow outlets are also predetermined, and all combinations of open / closed states of the airflow inlets and airflow outlets and their quantities are also predetermined.

[0121] When the information on the airflow stagnation area and the target conditions are known, the operating data of the ventilation equipment, information on the ventilation space, and all combinations of opening and closing states are input to computational fluid dynamics, and the combination of opening and closing states and opening and closing times that satisfy the target conditions (e.g., optimal improvement) for the airflow stagnation area are identified using computational fluid dynamics.

[0122] Reference may be made to the prior art for computational fluid dynamics, but the present application is not limited thereto.

[0123] FIG. 7 is another schematic diagram for acquiring a predetermined correspondence relationship among information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in the present application.

[0124] As shown in Figure 7, equipment information of the mechanical ventilation equipment and / or electronic ventilation equipment, and information on the ventilation space are obtained from the mechanical ventilation equipment and / or electronic ventilation equipment and the building model (e.g., BIM model), respectively, and information on the airflow stagnation area and information on the opening and closing combination corresponding to the target conditions are identified by computational fluid dynamics. Then, based on the information on the opening and closing combination, appropriate control information is generated to control the opening and closing state and / or opening and closing time of the exhaust port and / or intake port of the ventilation equipment.

[0125] Furthermore, once the processing for the currently identified stagnation area of ​​airflow is completed, a next simulation using computational fluid dynamics is performed to identify a new stagnation area of ​​airflow.

[0126] Third Embodiment In a third embodiment, a neural network is trained to acquire a predetermined correspondence between information on stagnant airflow areas, target conditions, and information on combinations of opening and closing.

[0127] FIG. 8 is another flowchart for obtaining a predetermined correspondence relationship among information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in this application.

[0128] As shown in FIG. 8 , obtaining the predetermined correspondence between information on airflow stagnation areas, target conditions, and information on opening / closing combinations includes step 801 of obtaining air parameter information, equipment information on the ventilation equipment, information on the ventilation space, and all combinations of opening / closing states, and step 802 of identifying information on airflow stagnation areas and information on opening / closing combinations corresponding to the target conditions using a neural network based on the air parameter information, equipment information on the ventilation equipment, information on the ventilation space, and all combinations of opening / closing states.

[0129] In this embodiment, the air parameter information may be obtained by a sensor.

[0130] The equipment information of the ventilation equipment may include, but is not limited to, the type of equipment, the number of ventilation outlets, the airflow speed of the ventilation outlets, the temperature of the ventilation outlets, the wind direction of the ventilation outlets, the shift indicator of the ventilation outlets, the open / close status of the ventilation outlets, the open / close time of the ventilation outlets, and the operation information of the equipment.

[0131] For the specified ventilation space, the airflow inlets and airflow outlets are also predetermined, and all combinations of open / closed states of the airflow inlets and airflow outlets and their quantities are also predetermined.

[0132] When the information on the airflow stagnation area and the target conditions are known, the air parameter information, the ventilation equipment equipment information, the ventilation space information, and all combinations of opening and closing states are input to the neural network, and the neural network learns the combination of opening and closing states and opening and closing times that will cause the airflow stagnation area to satisfy the target conditions.

[0133] According to the neural network method, even when the amount of data is enormous, it is possible to more quickly and accurately identify information on the open / close combination that satisfies the target condition by using the airflow stagnation area.

[0134] Regarding neural networks, reference may be made to the prior art, and the present application is not limited thereto.

[0135] FIG. 9 is another schematic diagram for acquiring a predetermined correspondence relationship among information on stagnant airflow areas, target conditions, and information on combinations of opening and closing in the present application.

[0136] As shown in Figure 9, air parameter information, equipment information of the mechanical ventilation equipment and / or electronic ventilation equipment, and ventilation space information are obtained from sensors, mechanical ventilation equipment and / or electronic ventilation equipment, and building models (e.g., BIM models), respectively. Information on airflow stagnation areas and information on opening and closing combinations corresponding to target conditions are identified using a neural network, and appropriate control information is then generated based on the opening and closing combination information to control the opening and / or closing state and / or opening and closing time of the exhaust and / or intake ports of the ventilation equipment.

[0137] Furthermore, once the processing for the currently identified airflow stagnation area is completed, the next learning is performed using the neural network to identify a new airflow stagnation area.

[0138] Fourth Embodiment In a fourth embodiment, a predetermined correspondence relationship between information on stagnant airflow regions, target conditions, and information on combinations of opening and closing is acquired by combining computational fluid dynamics and a neural network.

[0139] For example, air parameter information is obtained from data from sensors and the results of computational fluid dynamics simulations, and information on airflow stagnation areas is also obtained.Then, a neural network is used to learn the information on airflow stagnation areas and information on opening and closing combinations that correspond to target conditions.

[0140] The technical effects of the present invention will be described below with reference to examples with reference to FIGS.

[0141] FIG. 10 is a schematic diagram of a room 100. FIG. 11 is another schematic diagram of a room 110. As shown in FIG. 10 , the room 110 is provided with an airflow inlet 101, an airflow inlet 102, an airflow outlet 103, and an airflow outlet 104. Furniture such as a sofa 8 and a table 9 is also installed in the room 110. The black hatched area in FIG. 11 is the ventilation space 100 in which furniture such as the sofa 8 and the table 9 in the room 110 in FIG. 10 have been removed. Below, we will simulate the airflow conditions when different ventilation modes are adopted in the ventilation space 100.

[0142] The first type of ventilation mode is a conventional ventilation mode, in which the airflow inlet and the airflow outlet in the ventilation space 100 are kept in a constant open / closed state. That is, the open / closed states of the airflow inlet 101, the airflow inlet 102, the airflow outlet 103, and the airflow outlet 104 do not change over a certain period of time. For example, as shown in Table 2, the airflow inlet 101, the airflow inlet 102, the airflow outlet 103, and the airflow outlet 104 are all fully open within a period of 300 seconds.

[0143]

[0144] The second type ventilation mode is a ventilation mode in the present application, that is, it specifies the open / close state and / or open / close time of the airflow inlet and / or airflow outlet based on the airflow stagnation area and target conditions in the ventilation space 100. That is, the open / close states of the airflow inlet 101, airflow inlet 102, airflow outlet 103, and airflow outlet 104 may change or be switched over in a certain period of time. For example, as shown in Table 3, the open / close states of the airflow inlet 101, airflow inlet 102, airflow outlet 103, and airflow outlet 104 may be switched over multiple times within a period of 300 seconds.

[0145]

[0146] ​​Figure 12 shows the airflow distribution in the ventilation space 100 after 300 seconds in the first ventilation mode. Figure 13 shows the airflow distribution in the ventilation space 100 after 300 seconds in the second ventilation mode. As shown in Figure 12, in the first ventilation mode, the average age of air in the ventilation space 100 after 300 seconds was 136.0 seconds (seconds), and the maximum age of air was 281.9 seconds. As shown in Figure 13, in the second ventilation mode, the average age of air in the ventilation space 100 after 300 seconds was 83.7 seconds, and the maximum age of air was 181.0 seconds. As can be seen, both the average age of air and the maximum age of air after 300 seconds were significantly lower in the second ventilation mode than in the first ventilation mode.

[0147] FIG. 14 shows maximum air age curves for the ventilation space 100 in two ventilation modes. FIG. 15 shows mean air age curves for the ventilation space 100 in two ventilation modes. In FIG. 14, 1401 shows the maximum air age curve for the first mode, and 1402 shows the maximum air age curve for the second mode. In FIG. 15, 1501 shows the mean air age curve for the first mode, and 1502 shows the mean air age curve for the second mode. As shown in FIGS. 14 and 15, the curve for the second ventilation mode is below the curve for the first ventilation mode, i.e., both the maximum air age and the mean air age for the second ventilation mode are smaller than those for the first ventilation mode.

[0148] As can be seen from this, the method of controlling ventilation of a ventilation space in the present application can more easily replace the gas in the airflow stagnation area with the gas outside the airflow stagnation area than the prior art.

[0149] It should be noted that the above merely describes the relevant steps or processes in the present application, and the present application is not limited thereby. The method may further include other steps or processes, and reference may be made to the prior art for the specific content of those steps or processes.

[0150] The above-described embodiments are merely illustrative of the present application and are not intended to limit the scope of the present application. Appropriate modifications may be made based on the above-described embodiments. For example, the above-described embodiments may be used individually, or one or more of the above-described embodiments may be combined.

[0151] <Example of Second Aspect> An example of the second aspect relates to an apparatus for controlling ventilation of a ventilation space, and the apparatus corresponds to the method of the first aspect.

[0152] Fig. 16 is a schematic diagram of a device 160 for controlling ventilation of a ventilation space. As shown in Fig. 16, the device 160 for controlling ventilation of a ventilation space includes an identification unit 1601 that identifies information on an opening / closing combination that satisfies a target condition based on information on an airflow stagnation area in the ventilation space, and a control unit 1602 that generates control information for controlling the opening / closing state and opening / closing time of an airflow inlet and / or an airflow outlet in the ventilation space based on the information on the opening / closing combination.

[0153] In the present application, as shown in FIG. 16 , the device for controlling ventilation of the ventilation space further includes an acquisition unit 1603 for acquiring air parameter information in the ventilation space and identifying information on airflow stagnation areas in the ventilation space based on the air parameter information.

[0154] The device 160 for controlling ventilation of the ventilation space may be provided in any one or more ventilation equipment in the ventilation space and used as part of the ventilation equipment, or may be used as an independent piece of equipment.

[0155] For a description of each unit in the device 160 for controlling ventilation of a ventilation space, reference may be made to the description of the relevant steps in the embodiment according to the first aspect.

[0156] The above merely describes the relevant components or modules in the present application, and the present application is not limited thereto. The above device may further include other components or modules, and reference may be made to related art for specific details of these components or modules.

[0157] For convenience of explanation, Fig. 16 only exemplifies the connection relationships between the components or modules or the signal destinations, but as will be understood by those skilled in the art, related technologies such as bus connections may also be employed. Each of the components or modules may be realized by hardware devices such as a processor, memory, etc. The embodiments of the present application are not limited thereto.

[0158] The above-described embodiments are merely illustrative of the present application and are not intended to limit the present application. Appropriate modifications may be made based on the above-described embodiments. For example, the above-described embodiments may be used individually, or one or more of the above-described embodiments may be combined.

[0159] <Embodiment According to Third Aspect> An embodiment of the present application provides a ventilation system.

[0160] Fig. 17 is a schematic diagram of a ventilation system according to the present application. As shown in Fig. 17, the ventilation system 170 includes at least one ventilation facility 1701 and an apparatus 160 as described in the embodiment according to the second aspect.

[0161] FIG. 18 is a schematic diagram of a ventilation system. As shown in FIG. 18, the ventilation system 1701 may include multiple ventilation openings 8011 to 8016. Here, 8011, 8012, and 8013 are exhaust openings of the ventilation system 1701 (i.e., airflow inlets of the ventilation space), and 8014, 8015, and 8016 are intake openings of the ventilation system 1701 (i.e., airflow outlets of the ventilation space). Arrows indicate the direction of airflow or gas flow within the ventilation system 1701. The ventilation system 1701 shown in FIG. 18 is, for example, a fresh air system or an air conditioning system.

[0162] An embodiment of the present application provides an electronic device including the device 10 described in the embodiment of the second application. The details of the device 10 are incorporated into this embodiment, so further description is omitted. The electronic device may be, for example, a computer, a server, a workstation, a laptop computer, a smartphone, etc., but the embodiment of the present application is not limited thereto.

[0163] 19 is a schematic diagram of an electronic device according to an embodiment of the present application. As shown in FIG. 19, the electronic device 190 may include a processor (e.g., a central processing unit (CPU)) 1901 and a memory 1902, and the memory 1902 is coupled to the central processing unit 1901. Various data may be stored in the memory 1902. A program 1903 for information processing is further stored in the memory 1902, and the program 1903 is executed under the control of the processor 1901.

[0164] In some embodiments, the functionality of the device 10 may be integrated into a processor 1901, where the processor 1901 is arranged to implement a method for controlling ventilation of a ventilated space as described in the embodiments according to the first aspect.

[0165] In some embodiments, the device 160 may be disposed separately from the processor 1901. For example, the device 160 may be disposed as a chip connected to the processor 1901, and the functions of the device 160 may be realized under the control of the processor 1901.

[0166] 19, the electronic device 190 may further include an input / output (I / O) device 1904, a display 1905, and the like. The functions of the above components are the same as those of the conventional technology, and therefore, a description thereof will be omitted here. The electronic device 190 does not necessarily have to include all the components shown in FIG. 19. The electronic device 190 may also include components not shown in FIG. 19. For details, please refer to the related art.

[0167] An embodiment of the present application further provides a computer-readable program, wherein when the program is executed in an electronic device, the program causes the computer to execute a method for controlling noise in a space as described in the embodiment of the first aspect in the electronic device.

[0168] In an embodiment of the present application, there is further provided a storage medium storing a computer-readable program, wherein the computer-readable program causes a computer to execute a method for controlling noise in a space as described in the embodiment of the first aspect in an electronic device.

[0169] The above-mentioned devices and methods of the present invention may be realized by hardware or by a combination of hardware and software. This application relates to a computer-readable program as follows. When the program is executed by a logic unit, it can cause the logic unit to realize the above-mentioned devices or components, or to realize the above-mentioned various methods or steps. This application relates to a storage medium for storing the above-mentioned program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0170] The methods / apparatuses described in the embodiments of the present application may be directly embodied in hardware, software modules executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings and / or one or more combinations of the functional block diagrams may correspond to software modules or hardware modules in a computer program process. These software modules may correspond to steps shown in the drawings. These hardware modules may be implemented by solidifying the software modules using, for example, a field programmable gate array (FPGA).

[0171] The software modules may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of memory medium known in the art. A memory medium may be coupled to a processor so that the processor can read information from and write information to the memory medium. Alternatively, the memory medium may be an integral part of the processor. The processor and the memory medium may be located in an ASIC. The software modules may be stored in memory of a mobile terminal or in a memory card insertable into a mobile terminal. For example, if a device (e.g., a mobile terminal) employs a mega-SIM card or a large-capacity flash memory device with a relatively large capacity, the software modules may be stored in the mega-SIM card or the large-capacity flash memory.

[0172] One or more of the functional blocks and / or one or more combinations of functional blocks illustrated in the accompanying drawings may be implemented as a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination for performing the functions described herein. One or more of the functional blocks and / or one or more combinations of functional blocks illustrated in the accompanying drawings may be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in combination with a DSP communication, or any other such arrangement.

[0173] The present application has been described above in connection with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and do not limit the scope of protection of the present application. Those skilled in the art can make various modifications and alterations to the present application based on the principles of the present application, and these modifications and alterations also fall within the scope of the present invention.

[0174] JP 2022-054035 A JP 2023-090074 A JP 2006-275349 A

Claims

1. A method for controlling ventilation of a ventilation space provided with an air flow inlet and an air flow outlet, in which gas is exchanged with the outside through the air flow inlet and the air flow outlet, comprising the steps of: identifying information on an opening / closing combination that satisfies a target condition based on information on an air flow stagnation area in the ventilation space; and generating control information for controlling the opening / closing state and / or opening / closing time of the air flow inlet and / or the air flow outlet based on the information on the opening / closing combination.

2. The method according to claim 1, further comprising the steps of: acquiring air parameter information in the ventilation space; and identifying information about the airflow stagnation area in the ventilation space based on the air parameter information.

3. The method according to claim 2, characterized in that: based on the air parameter information at one location in the ventilation space, it is determined whether the location is an airflow stagnation area; and / or based on the distribution of the air parameter information at at least two locations in the ventilation space, information on the airflow stagnation area in the ventilation space is identified.

4. The method according to claim 2, characterized in that the air parameter information in the ventilated space is obtained based on air parameter data collected by at least one sensor installed in the ventilated space, and / or the air parameter information in the ventilated space is obtained from the results of a computational fluid dynamics simulation of the ventilated space.

5. The method of claim 4, wherein the sensor is movable or has a fixed position in the ventilation space.

6. The method according to claim 1, characterized in that information on an opening / closing combination corresponding to the information on the airflow stagnation area and the target condition is selected from among a plurality of pieces of information on opening / closing combinations in accordance with a predetermined correspondence relationship between the information on the airflow stagnation area, the target condition, and the information on the opening / closing combination.

7. The method according to claim 6, characterized in that the correspondence is obtained by processing field experimental data, and / or from the results of computational fluid dynamics (CFD) simulations, and / or by training a neural network.

8. The method according to claim 1, wherein the information on the combination of opening and closing includes the combination of opening and closing states of the air inlet and / or the air outlet and / or the opening and closing times.

9. The method according to claim 8, wherein the open and closed states include a fully open state, a fully closed state, and a half-open state intervening between the fully open state and the fully closed state.

10. The method of claim 9, wherein at least one of the airflow inlet and the airflow outlet is in the fully open state or the half open state.

11. The method of claim 1, characterized in that the target conditions include at least one of: an air parameter reaching a predetermined parameter threshold; the time it takes for the air parameter to reach the air parameter threshold being less than a predetermined time threshold; a user's status; a user ID; a user's preference; or the energy consumption of ventilation equipment installed in the ventilation space being less than a predetermined energy consumption threshold.

12. The method of claim 11, wherein the air parameters include at least one of the following: particulate matter concentration, air component concentration, temperature, humidity, air flow velocity, and air flow direction.

13. The method of claim 1, wherein the types of airflow stagnation regions include at least one of airflow vortex regions and airflow still regions.

14. The method according to claim 1, characterized in that the air flow inlet is an exhaust port of a ventilation equipment provided in the ventilation space, and / or the air flow outlet is an intake port of a ventilation equipment provided in the ventilation space.

15. The method according to claim 14, characterized in that the ventilation equipment includes fan-equipped ventilation equipment and / or fanless ventilation equipment, the fan-equipped ventilation equipment includes at least one of fresh air equipment, air conditioning equipment, air purification equipment, and air sterilization / disinfection equipment, and the fanless ventilation equipment includes at least one of doors and windows.

16. The method according to claim 14, wherein the airflow inlets and the airflow outlets are provided in at least two or more ventilation equipment or in two or more types of ventilation equipment.

17. The method according to claim 1, characterized in that the air flow inlet and / or the air flow outlet do not change position before and after the adjustment of the open / closed state.

18. A device for controlling ventilation of a ventilation space provided with an air flow inlet and an air flow outlet, in which gas is exchanged with the outside through the air flow inlet and the air flow outlet, characterized in comprising: an identification unit that identifies information on an opening / closing combination that satisfies a target condition based on information on an air flow stagnation area in the ventilation space; and a control unit that generates control information for controlling the opening / closing state and opening / closing time of the air flow inlet and / or the air flow outlet based on the information on the opening / closing combination.

19. A ventilation system, characterized in that it comprises at least one ventilation installation and a device for controlling ventilation of a ventilated space according to claim 18.

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