Classroom with fresh air system

Abstract

The utility model relates to a classroom with a fresh air system, which comprises a classroom body, an exhaust valve arranged on a wall body on one side of the classroom body and an air inlet window arranged on a wall body opposite to the exhaust valve, and the exhaust valve and the air inlet window are diagonally distributed; a ventilation channel is formed in the exhaust valve, a first ventilation hole set is formed in the inner side of the exhaust valve relative to the air inlet end of the ventilation channel, and a second ventilation hole set is formed in the outer side of the exhaust valve relative to the air outlet end of the ventilation channel. An exhaust fan is arranged in the ventilation channel; a fan is arranged in a window frame on one side of the air inlet window, a ventilation structure is arranged on the outer side of the window frame relative to the fan, and a ventilation opening is correspondingly formed in the inner side of the window frame relative to the bottom of the fan. And the exhaust fan and the fan can be in communication connection with the control system. By optimizing the structure of the exhaust valve and the structure of the air inlet window and arranging the exhaust valve and the air inlet window in the diagonal direction of the house, indoor air can be replaced under the condition that the door and the window are closed, and it is ensured that a proper breathing environment is kept indoors.

Description

Technical Field

[0001] This utility model relates to the field of indoor ventilation technology, and in particular to a classroom with a fresh air system. Background Technology

[0002] Indoor air quality has a significant impact on the health and comfort of teachers and students. When doors and windows are closed, the air quality in the classroom can deteriorate over time, making it difficult to meet the body's health needs and causing adverse effects.

[0003] Classrooms typically rely on natural ventilation, achieved through opening doors and windows for air exchange. However, this method is limited by weather conditions. In cold, foggy, or windy weather, doors and windows often cannot be opened simultaneously to maintain indoor temperature and humidity and prevent outdoor pollutants from entering, resulting in insufficient ventilation. Prolonged exposure to such an environment causes indoor carbon dioxide concentrations to rise continuously. According to relevant research, after a 45-minute class, classroom carbon dioxide concentrations often exceed the comfort threshold of 1500 ppm, causing drowsiness and difficulty concentrating for both teachers and students, thus disrupting normal teaching.

[0004] Therefore, providing a classroom with a fresh air system that can meet indoor ventilation needs when doors and windows are closed is an urgent problem to be solved. Utility Model Content

[0005] In view of this, the main objective of this utility model is to provide a classroom with a fresh air system, which effectively solves the problem of poor indoor air quality when it is not suitable to open doors and windows for ventilation by improving the specific structure of the doors and windows and their placement.

[0006] This application provides a classroom with a fresh air system, including a classroom body, an exhaust door on one side wall of the classroom body, and an air inlet window on the opposite wall of the exhaust door, wherein the exhaust door and the air inlet window are diagonally distributed.

[0007] The exhaust valve has a ventilation channel inside, and a first group of ventilation holes is provided on the inner side of the exhaust valve relative to the air inlet end of the ventilation channel, and a second group of ventilation holes is provided on the outer side of the exhaust valve relative to the air outlet end of the ventilation channel; an exhaust fan is provided inside the ventilation channel.

[0008] A fan is installed inside one side of the air intake window frame, and an air exchange structure is provided on the outer side of the window frame relative to the fan. An air exchange port is opened on the inner side of the window frame corresponding to the bottom of the fan.

[0009] Both the exhaust fan and the blower can communicate with the control system.

[0010] In some embodiments, the first vent group is located at the lower part of the inner side of the exhaust valve, and the second vent group is located at the upper part of the outer side of the exhaust valve.

[0011] In some embodiments, the diameter of the air inlet in the first air exchange hole group is smaller than the diameter of the air outlet in the second air exchange hole group.

[0012] In some embodiments, a first filter screen is provided at the position of the exhaust valve relative to the first air exchange port group, and a second filter screen is provided at the position of the exhaust valve relative to the second air exchange port group;

[0013] Both the first filter and the second filter are removable filters.

[0014] In some embodiments, the exhaust fan is located in the lower middle part of the ventilation duct.

[0015] In some embodiments, the exhaust fan is a silent fan.

[0016] In some embodiments, the fan is arranged laterally within the upper window frame of the air intake window.

[0017] In some embodiments, the ventilation structure includes a plurality of horizontally parallel ventilation plates, and the width of the plurality of ventilation plates increases sequentially from top to bottom.

[0018] In some embodiments, the upper window frame of the air intake window is provided with an inclined slope relative to the bottom of the fan blades, and the air exchange port is located at the end of the inclined slope closer to the interior.

[0019] In some embodiments, a filter assembly is disposed opposite to the ventilation structure, and the filter assembly is a multi-layer filter.

[0020] Technical effects of this utility model:

[0021] This application effectively solves the problem of poor indoor air quality when it is not suitable to open doors and windows for ventilation by improving the specific structure and placement of the classroom doors and windows. Specifically, it includes the classroom body, an exhaust door on one wall of the classroom body, and an air inlet window on the opposite wall of the exhaust door, with the exhaust door and air inlet window diagonally distributed; the exhaust door has a ventilation channel inside, and the inner side of the exhaust door has a first set of ventilation holes relative to the air inlet end of the ventilation channel, while the outer side of the exhaust door has a second set of ventilation holes relative to the air outlet end of the ventilation channel; an exhaust fan is installed inside the ventilation channel; a fan is installed in one side of the air inlet window frame, and the outer side of the window frame has a ventilation structure relative to the fan, while the inner side of the window frame has a corresponding air outlet relative to the bottom of the fan; both the exhaust fan and the air inlet window can communicate with the control system. By optimizing the structure of the exhaust door and air inlet window and placing them diagonally in the building, indoor air exchange can be achieved even when doors and windows are closed, ensuring a suitable breathing environment indoors.

[0022] Other features and aspects of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this disclosure together with the specification and serve to explain the principles of this disclosure.

[0024] Figure 1 The diagram shows a top view of a classroom with a fresh air system, as an embodiment of this application.

[0025] Figure 2 The diagram shown is a structural schematic of an exhaust door in a classroom with a fresh air system, as an embodiment of this application.

[0026] Figure 3 The diagram shown is a structural schematic of an air intake window in a classroom with a fresh air system, as an embodiment of this application.

[0027] Figure 4 The image shown is a longitudinal cross-sectional view of an air intake window in a classroom with a fresh air system, as described in an embodiment of this application.

[0028] Figure 5 The diagram shown is a structural schematic of a fan in a classroom with a fresh air system, as described in an embodiment of this application.

[0029] Figure 6 The diagram shows the results of an air exchange experiment when the exhaust valve and the air intake window are located on the same wall.

[0030] Figure 7 The diagram shows the results of an air exchange experiment when the exhaust valve and the air intake window are located on the same side of an opposing wall.

[0031] Figure 8 The diagram shows the results of an air exchange experiment when the exhaust valve and air intake window are located on opposite sides of an opposing wall.

[0032] Figure 9 The diagram shows the airflow path when the exhaust valve and the air intake window are located on the same wall.

[0033] Figure 10 The diagram shows the airflow path when the exhaust valve and the air intake window are located on the same side of an opposing wall.

[0034] Figure 11 The diagram shows the airflow path when the exhaust valve and air intake window are located on opposite sides of an opposing wall. Detailed Implementation

[0035] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0036] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0037] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0038] like Figure 1 As shown in the figure, this application embodiment provides a classroom with a fresh air system, including a classroom body and an exhaust door 100 and an air inlet window 200 on the wall opposite the exhaust door 100, and the exhaust door 100 and the air inlet window 200 are diagonally distributed; the exhaust door 100 is provided with a ventilation channel inside, and a first ventilation hole group 110 is opened on the inner side of the exhaust door 100 relative to the air inlet end of the ventilation channel, and a second ventilation hole group 120 is opened on the outer side of the exhaust door 100 relative to the air outlet end of the ventilation channel; an exhaust fan 130 is provided inside the ventilation channel; a fan 210 is provided in the window frame on one side of the air inlet window 200, and a ventilation structure 220 is provided on the outer side of the window frame relative to the fan 210, and a ventilation port 230 is opened on the inner side of the window frame corresponding to the bottom of the fan; both the exhaust fan 130 and the fan 210 can be communicatively connected to the control system.

[0039] This embodiment provides a classroom with a fresh air system. By improving the door and window structure, it enables the exchange of indoor and outdoor air even when the doors and windows are closed, reducing the indoor carbon dioxide concentration, increasing the oxygen content, and meeting daily ventilation needs. Specifically, such as... Figure 2-5 As shown, in this embodiment, an exhaust door 100 is installed on one side wall of the classroom, and an air inlet 200 is installed on the opposite side wall. The exhaust door 100 has a hollow ventilation channel inside, which, in conjunction with a first ventilation hole group 110 and a second ventilation hole group 120 respectively located on the inner and outer sides of the exhaust door 100, exhausts indoor air to the outside. This embodiment also includes a control system, and an intelligent exhaust fan is installed inside the ventilation channel. This fan can communicate with the control system, and when indoor-outdoor ventilation is required, the control system controls the intelligent exhaust fan to rotate, thereby ensuring that air with high carbon dioxide content is exhausted outdoors.

[0040] It should also be noted that, in this embodiment, the air intake window 200 has a fan 210 connected to the control system installed in the window frame on one side, and a ventilation structure 220 is installed on the outer side of the window frame corresponding to the fan 210. When it is necessary to draw fresh outdoor air into the room, the fan 210 is turned on by the control system. At this time, outdoor air can enter the window frame through the ventilation structure 220. At the same time, a ventilation port 230 is also opened on the inner side of the window frame relative to the bottom of the fan, so that air can enter the room through the ventilation port 230, thereby achieving the purpose of indoor ventilation.

[0041] It should be particularly noted that in this embodiment, the exhaust valve 100 is located on one side of the wall it is situated on, and the air intake window 200 is located on the side of the wall away from the exhaust valve 100, i.e., the exhaust valve 100 and the air intake window 200 are diagonally distributed. It should also be noted that this application uses an exhaust fan 130 with an air volume of 400 cubic meters per hour and a blower at a height of 50.84m. 2 The classroom room airflow reproduction and simulation experiment showed that placing the exhaust door 100 and the air inlet window 200 on opposite sides of the wall creates a highly efficient diagonal airflow, ensuring comprehensive air renewal and preventing localized air stagnation, compared to placing them on opposite sides of the same wall or on the same side of the opposite wall. Figure 6 and Figure 9 As shown, the exhaust valve and the air intake window are located on the same side wall and are far apart, requiring a long period of air circulation to achieve ventilation, resulting in low ventilation efficiency; Figure 7 and Figure 10As shown, although placing the exhaust valve and the air intake window on the same side of the opposite wall shortens the distance between the air intake window and the exhaust valve, it still does not effectively solve the problem of low ventilation efficiency; for example Figure 8 and Figure 11 As shown, when the exhaust valve 100 and the air intake window 200 are arranged on opposite sides of the wall, they can not only accelerate the exchange of indoor and outdoor air, but also ensure the comprehensive renewal of indoor air. At the same time, they can also maintain stable indoor air pressure, avoid overpressure or underpressure, and ensure the comfort of the indoor environment.

[0042] Therefore, the classroom with a fresh air system in this embodiment optimizes the structure of the exhaust door 100 and the air inlet window 200 and sets them diagonally opposite each other in the room, so as to achieve the replacement of indoor air when the doors and windows are closed. This effectively solves the problem that when the external environment is not suitable for opening windows or doors for ventilation, such as when the weather is cold or the pollution is severe, the purpose of ventilation can still be achieved, and the indoor breathing environment can be maintained.

[0043] In some embodiments, the first vent group 110 is located on the lower part of the inner side of the exhaust valve 100, and the second vent group 120 is located on the upper part of the outer side of the exhaust valve 100.

[0044] In this embodiment, the first ventilation port group 110 is located at the lower part of the inner side of the exhaust valve 100. This is because when doors and windows are closed, the indoor air's carbon dioxide concentration increases over time due to activities such as breathing and equipment heat dissipation. Since the carbon dioxide concentration is greater than the oxygen concentration, it tends to accumulate in the lower part of the indoor space. Therefore, in this embodiment, the exhaust valve 100 has a first ventilation port group 110 at the lower part near the indoor side, allowing oxygen-rich air to smoothly enter the ventilation channel during ventilation. Simultaneously, a second ventilation port group 120 is correspondingly located at the upper part of the exhaust valve 100 near the outdoor side. Air entering the ventilation channel is propelled upwards by the exhaust fan 130 and exhausted to the outside through the second ventilation port group 120, thereby reducing the indoor carbon dioxide content.

[0045] It should also be noted that, based on the natural diffusion characteristics of gases, when carbon dioxide is expelled from the lower layer of the room, a relatively low-pressure area is formed in the lower space. Oxygen located in the upper layer will gradually sink downwards to fill the space gap left by the expelled carbon dioxide, thus achieving indoor air circulation.

[0046] In some embodiments, the diameter of the air inlet 111 in the first ventilation hole group 110 is smaller than the diameter of the air outlet 121 in the second ventilation hole group 120.

[0047] In this embodiment, the first ventilation hole group 110 includes several identical air inlets 111, and the second ventilation hole group 120 includes several identical air outlets 121. It should be noted that the diameter of the air inlets 111 is smaller than the diameter of the air outlets 121. According to Bernoulli's principle, as the gas flow rate increases, the pressure decreases. Therefore, when the exhaust fan operates, the internal pressure near the air inlets 111 inside the exhaust valve 100 decreases, allowing polluted indoor air to enter the ventilation channel through the air inlets 111. Simultaneously, because the diameter of the air inlets 111 in this embodiment is relatively small, the air flow rate is relatively faster when it enters the ventilation channel through the air inlets 111, thus accelerating the discharge of polluted air from the room and achieving efficient ventilation.

[0048] In some embodiments, a first filter screen is provided on the exhaust valve 100 relative to the first air exchange port group 110, and a second filter screen is provided on the exhaust valve 100 relative to the second air exchange port group; both the first filter screen and the second filter screen are detachable filter screens.

[0049] In this embodiment, a removable filter screen is installed at a position relative to the first ventilation port group 110. Since the first ventilation port group 110 is located near the ground at the air inlet, and in places with high traffic such as classrooms, there is a lot of dust, hair, paper scraps and other small debris on the ground, the filter screen can prevent debris from entering the ventilation channel, prevent dust accumulation inside the channel, and also ensure the normal operation of the exhaust fan 130, extending the service life of the equipment.

[0050] Furthermore, in this embodiment, the exhaust valve 100 is also equipped with a second filter screen at a position relative to the second ventilation port group 120. Due to the complex outdoor environment, foreign objects such as mosquitoes, willow catkins, or dust may flow back into the ventilation duct due to airflow disturbances generated by the exhaust air from the exhaust valve 100. Therefore, this embodiment provides a second filter screen to prevent external foreign objects from entering, further ensuring the normal operation of the ventilation duct and its internal exhaust fan 130. Simultaneously, the removable first and second filters can be easily removed for cleaning, resulting in low overall maintenance costs and ensuring the normal and stable operation of the exhaust valve 100.

[0051] In some embodiments, the exhaust fan 130 is located in the lower middle part of the ventilation duct.

[0052] In this embodiment, the exhaust fan 130 is preferably located in the lower middle part of the ventilation channel, that is, closer to the space area with a high carbon dioxide content. It can powerfully draw in the part from the source and quickly draw it into the ventilation channel, so as to achieve the purpose of efficiently capturing polluted air with a high carbon dioxide content.

[0053] In some embodiments, the exhaust fan 130 is a silent fan.

[0054] The application scenario of this embodiment is a school, that is, a place where a quiet atmosphere needs to be maintained. The use of a silent fan can reduce the noise during operation and can expel polluted air without affecting normal activities.

[0055] In some embodiments, the fan 210 is arranged laterally within the upper window frame of the air inlet 200.

[0056] In this embodiment, the fan 210 is horizontally positioned inside the window frame above the air inlet 200. The left and right sides of the upper window frame have corresponding arc-shaped mounting positions relative to the sides of the fan 210, allowing the fan 210 to rotate axially under the control of the control system. The fan 210, the ventilation structure 220, and the ventilation port 230 work together to introduce fresh outdoor air into the room.

[0057] It should be noted that by installing the fan 210 within the upper part of the air intake window 200 frame, fresh outdoor air can be evenly distributed throughout the space from top to bottom after entering the room. This is because when denser carbon dioxide flows out of the room through the exhaust door 100, a relatively low-pressure area is formed in the lower space, and fresh air can fill the original gap, ensuring effective ventilation.

[0058] In some embodiments, the ventilation structure 220 includes a plurality of horizontally parallel ventilation plates 221, and the width of the plurality of ventilation plates 221 increases sequentially from top to bottom.

[0059] It should be noted that in this embodiment, the multiple ventilation panels 221 are arranged horizontally in parallel, with strip-shaped ventilation holes formed between adjacent ventilation panels 221. The width of the multiple ventilation panels 221 increases sequentially from top to bottom, with the topmost panel having the smallest width and the bottommost panel having the largest width. Furthermore, the ventilation panels 221 are all flush with each other at the outdoor end, and the curved surface formed at the indoor end matches the cylindrical surface formed by the rotating fan blades. This effectively guides the fresh air entering the window frame, allowing it to flow more smoothly, reducing airflow turbulence and resistance, and improving ventilation efficiency.

[0060] In some embodiments, an inclined slope 240 is provided in the upper window frame of the air intake window relative to the bottom of the fan blades of the fan 210, and the air vent 230 is located at the end of the inclined slope 240 near the interior.

[0061] In this embodiment, the bottom of the fan blades of the fan 210 is provided with an inclined slope 240, with the top of the inclined slope 240 closer to the outside and the bottom closer to the inside. Air entering the window frame flows along the inclined slope 240, ensuring that air enters the room in an orderly manner under the drive of the fan, thus optimizing the airflow path. In this embodiment, the ventilation port 230 is located at the end of the inclined slope 240 closer to the inside; that is, after passing through the inclined slope 240, air enters the room through the ventilation port 230, thereby achieving the purpose of ventilation. This embodiment makes reasonable use of the internal space of the window frame, providing a transition area for the airflow entering the window frame, allowing the air to enter the room in a relatively stable state after being buffered and guided by the slope, thus providing a comfortable indoor air environment.

[0062] In some embodiments, a filter assembly is disposed opposite to the ventilation structure 220, and the filter assembly is a multi-layer filter.

[0063] In this embodiment, to ensure that the air entering the room meets the user's health needs and guarantees the normal operation of the fan, a filter assembly is preferably installed at the position of the air intake window 200 relative to the ventilation structure 220 to purify the air entering the room and maintain the quality and stability of ventilation. In this embodiment, the filter assembly is preferably a multi-layer filter, specifically, consisting of a coarse filter, a fine filter, and an activated carbon filter arranged sequentially from the outside to the inside. The outermost coarse filter can intercept debris such as leaves, willow catkins, or larger dust particles, preventing them from entering the air intake window 200 and causing blockage; the middle layer can be a fine filter to capture tiny particles, including pollen or fine dust, reducing the dust quality of the indoor air; the innermost activated carbon filter can adsorb odor molecules or some bacteria and other microorganisms, further ensuring the cleanliness of the indoor air and greatly improving air quality. It also prevents a large amount of debris from entering the fan and other ventilation components, causing equipment wear and extending the equipment's service life.

[0064] In summary, this application optimizes the specific structure and placement of the exhaust valve 100 and the air intake window 200, enabling ventilation of the entire space even with doors and windows closed. Indoor air is exhausted through the exhaust valve 100, while fresh outdoor air enters through the air intake window 200. The opposing exhaust valves 100 and air intake windows 200 improve the air quality throughout the entire indoor space. Furthermore, the overall maintenance cost is low, providing a comfortable and healthy indoor air environment.

[0065] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "a," "an," "the," and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusion. The terms "connected," "linked," "coupled," and similar words used in this application are not limited to physical or mechanical connections but include electrical connections, whether direct or indirect. The term "multiple" used in this application refers to two or more, and "and / or" describes the relationship between related objects, indicating that three relationships may exist. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are merely to distinguish similar objects and do not represent a specific ordering of objects.

[0067] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications or improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A classroom equipped with a fresh air system, characterized in that, It includes a classroom body, an exhaust door on one side wall of the classroom body, and an air intake window on the opposite wall of the exhaust door, with the exhaust door and the air intake window being diagonally distributed; The exhaust valve has a ventilation channel inside, and a first group of ventilation holes is provided on the inner side of the exhaust valve relative to the air inlet end of the ventilation channel, and a second group of ventilation holes is provided on the outer side of the exhaust valve relative to the air outlet end of the ventilation channel; an exhaust fan is provided inside the ventilation channel. A fan is installed inside one side of the air intake window frame, and an air exchange structure is provided on the outer side of the window frame relative to the fan. An air exchange port is opened on the inner side of the window frame corresponding to the bottom of the fan. Both the exhaust fan and the blower can communicate with the control system.

2. The classroom with a fresh air system according to claim 1, characterized in that, The first vent group is located at the lower part of the inner side of the exhaust valve, and the second vent group is located at the upper part of the outer side of the exhaust valve.

3. The classroom with a fresh air system according to claim 2, characterized in that, The diameter of the air inlet in the first air exchange hole group is smaller than the diameter of the air outlet in the second air exchange hole group.

4. The classroom with a fresh air system according to claim 1, characterized in that, A first filter screen is provided at the position of the exhaust valve relative to the first air exchange hole group, and a second filter screen is provided at the position of the exhaust valve relative to the second air exchange hole group. Both the first filter and the second filter are removable filters.

5. The classroom with a fresh air system according to claim 1, characterized in that, The exhaust fan is located in the lower middle part of the ventilation duct.

6. The classroom with a fresh air system according to claim 1, characterized in that, The exhaust fan is a silent fan.

7. The classroom with a fresh air system according to claim 1, characterized in that, The fan is horizontally positioned within the upper window frame of the air intake window.

8. The classroom with a fresh air system according to claim 7, characterized in that, The ventilation structure includes multiple horizontally parallel ventilation plates, and the width of the multiple ventilation plates increases sequentially from top to bottom.

9. The classroom with a fresh air system according to claim 7, characterized in that, The upper window frame of the air intake window has an inclined slope relative to the bottom of the fan blades, and the air exchange port is located at the end of the inclined slope closer to the interior.

10. The classroom with a fresh air system according to claim 1, characterized in that, A filter assembly is disposed opposite to the ventilation structure, and the filter assembly is a multi-layer filter.

Images