air quality meter

Abstract

The present invention relates to an air quality measuring device which is installed indoors and outdoors to measure dust and pollutants in the air, and more particularly, to an air quality measuring device which improves the measuring accuracy of inhaled air, emits light in any designated color according to the degree of air pollution measured, and thus enables the outside to recognize whether the air is polluted or not. The air quality measuring device includes a main body having an LED module formed inside, a plurality of through holes through which air flows, and a plurality of discharge holes spaced apart from the through holes; a measuring portion installed on the upper side of the main body to communicate with the through holes, provided with a suction fan for sucking air from the through holes and a measuring sensor for measuring the concentration of dust from the inhaled air; and a cover installed on the main body to surround the measuring portion, guiding the movement of air so that the air discharged from the suction fan is discharged from the discharge holes.

Description

Technical Field

[0001] This invention relates to an air quality measuring instrument that can be installed indoors and outdoors to measure particulate matter and pollutants in the air. More specifically, the air quality measuring instrument of this invention improves the measurement accuracy of inhaled air and emits light in any specified color according to the measured degree of air pollution, thereby enabling external identification of the degree of air pollution. Background Technology

[0002] Recently, the number of days with ultrafine dust concentrations exceeding permissible levels has been increasing. Inhaling ultrafine dust can trigger respiratory illnesses, and the World Health Organization has recently classified it as a carcinogen.

[0003] Although particulate matter concentrations are increasing, the products on the market are mainly indoor air purifiers and indoor air quality monitors. Furthermore, the displays on air quality monitors are generally not very intuitive.

[0004] Therefore, there is a need for a product that can be selectively installed outdoors or indoors, and whose air pollution and particulate matter concentration can be easily confirmed visually. Furthermore, high accuracy in air pollution measurement is required.

[0005] Prior technology literature

[0006] [Patent Documents]

[0007] Patent Document 1: KR10-2199310B1

[0008] Patent Document 2: KR20-0484803Y1 Summary of the Invention

[0009] The technical issues to be solved

[0010] The purpose of this invention is to provide an air quality measuring instrument that can measure indoor and outdoor air quality, improve measurement accuracy, and identify air quality from the outside with the naked eye based on air quality records.

[0011] Problem Solution

[0012] The air quality measuring instrument of the present invention includes: a main body 100, in which an LED module 101 is formed, and a plurality of through holes 110 for airflow and a plurality of discharge holes 120 separated from the through holes 110; a measuring unit 200, mounted on the upper side of the main body 100 and communicating with the through holes 110, comprising a fan 201 for providing suction for drawing air in from the through holes 110 and a measuring sensor 202 for measuring the concentration of particulate matter in the drawn-in air; and an outer cover 300, mounted on the main body 100 and surrounding the measuring unit 200, for guiding the movement of air so that the air discharged from the fan 201 is discharged from the discharge holes 120.

[0013] In this invention, the air flowing into the through hole 110 and the discharge hole 120 moves in opposite directions. The discharge hole 120 may be configured such that the diameter of the portion A2 that exposes to the outside of the main body 100 and discharges air is smaller than the diameter of the portion A1 that flows into the air guided by the outer cover 300.

[0014] Furthermore, based on the horizontal cross-section of the aforementioned main body 100, the portion A2 of the air discharge hole 120 can be formed to one side by the virtual baseline L.

[0015] Furthermore, the inner side of the measuring section 200 may also include: a retention partition 410, forming a through hole 41 for airflow and a guide flange 412 extending upward along the edge of the through hole 411; and a cover 420, the diameter of which is larger than the diameter of the guide flange 412, covering a portion of the upper end of the guide flange 412 and changing the movement path of the air moving toward the through hole 41.

[0016] In addition, as another embodiment of the present invention, an opening and closing part 430 may be provided inside the measuring part 200, which can be opened and closed according to whether the suction fan 201 is operated.

[0017] In addition, the opening and closing part 430 may also include: a support 431, which has a through hole 431h formed vertically; and an opening and closing cover 432, which is formed in the through hole 431h and is composed of at least two opening and closing wings 432-1 and a counterweight 432-2. The opposing sides of the opening and closing wings 432-1 are in contact and protrude in the direction of air movement. The counterweight 432-2 provides a certain weight to the opening and closing wings 432-1.

[0018] Furthermore, the aforementioned outer cover 300 may include: a housing 310 with open upper and lower sides; a guide plate 320 formed at the upper end of the housing 310 to slide in the vertical direction; an elastic member 330 disposed between the guide plate 320 and the upper end of the housing 310 to elastically support the guide plate 320; and a pressure member 340 formed at the upper outer side of the guide plate 320 to apply a downward lifting force to pressurize the guide plate 320.

[0019] The invention has the following effects:

[0020] In order to prevent the intake and exhaust air from interfering with each other, this invention adjusts the speed of the exhaust air according to the external wind speed, thereby enabling smooth intake and exhaust.

[0021] Furthermore, this invention prevents an increase in the residence time of the inhaled air and also prevents the accumulation of dust on the measuring sensor, thereby improving the accuracy of the measured values. It emits light in any specified color according to the measured degree of air pollution, thereby enabling the identification of whether or not there is air pollution. Attached Figure Description

[0022] Figure 1 This is a diagram illustrating an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view showing the main structure of the present invention.

[0024] Figure 3 This is a cross-sectional view showing portion A-A' of the present invention.

[0025] Figure 4 and Figure 5 This is a cross-sectional view illustrating an embodiment of the present invention.

[0026] Figure 6 This is a cross-sectional view showing an embodiment of the outer cover of the present invention. Detailed Implementation

[0027] The present invention will now be described in more detail with reference to the accompanying drawings.

[0028] The terms "first," "second," etc., can be used to describe multiple constituent elements, but the constituent elements should not be limited by these terms. The purpose of using these terms is solely to distinguish one constituent element from others. For example, without departing from the scope of the invention, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element. Terms such as "and / or" include a combination of multiple related described items or one of multiple related described items.

[0029] When a component is mentioned as being "connected" or "connected" to other components, it may be directly connected or connected to other components, but it should be understood that other components may exist in between. Conversely, when a component is "directly connected" or "directly connected" to other components, it should be understood that no other components exist in between. Furthermore, the connection or connection between the first and second components on a network indicates that data can be sent and received between the first and second components via wired or wireless means.

[0030] Furthermore, the terms "module" and "section" used to refer to constituent elements in the following description are used purely for the convenience of writing this specification and do not have any particularly important meaning or function in themselves. Therefore, the terms "module" and "section" may be used interchangeably.

[0031] In practical applications, such constituent elements may be combined into one constituent element as needed, or one constituent element may be subdivided into two or more constituent elements. The same or similar constituent elements are assigned the same reference numerals throughout the drawings, and detailed descriptions of constituent elements with the same reference numerals can be omitted by replacing the descriptions of the aforementioned constituent elements.

[0032] Furthermore, this invention includes all possible combinations of the embodiments shown in this specification. While the various embodiments of the invention differ from one another, they are not mutually exclusive. An embodiment with a particular shape, structure, function, and characteristic described in this specification can be implemented through other embodiments. For example, the constituent elements mentioned in the first and second embodiments can perform all the functions of the first and second embodiments.

[0033] refer to Figure 1 and Figure 2 The air quality measuring instrument of the present invention may include a main body 100, a measuring part 200 and an outer cover 300.

[0034] The main body 100 may have an internal LED module 101 that emits light when powered by an external source. The LED module 101 may be positioned at the center of the main body 100.

[0035] The light source illuminating the LED module 101 is positioned downwards. The LED module 101 can variably control its color, brightness, etc., according to the measured dust concentration. Therefore, people can confirm the dust concentration by visually observing the light source emitting from the LED module 101.

[0036] The main body 100 may include: multiple through holes 110 for airflow; and multiple exhaust holes 120 spaced apart from the through holes 110. The through holes 110 are arranged in a circular pattern with the LED module 101 at predetermined intervals. The exhaust holes 120 are also arranged in a circular pattern with the LED module 101 as the center, and the diameter of the circle is larger than the diameter of the through holes 110.

[0037] The measuring part 200 can be installed on the upper side of the main body 100. The measuring part 200 can be open on both the upper and lower sides and hollow inside. The measuring part 200 is installed on the upper side of the main body 100, so that the through hole 110 and the interior of the measuring part 200 are interconnected.

[0038] The measuring unit 200 may include a suction fan 201 installed at its upper end.

[0039] The suction fan 201 provides suction to draw in external air through the through hole 110. When the suction fan 201 is activated, external air flows into the hollow interior space of the measuring section 200 through the through hole 110, and the inflowing air can be discharged to the outside of the measuring section 200 through the suction fan 201.

[0040] The measuring unit 200 may also include a measuring sensor 202, which measures the concentration of particulate matter in the air retained within the hollow interior space of the measuring unit 200. The measuring sensor 202 can measure particulate matter such as PM2.5 fine particles and PM10 coarse particles. The measuring sensor 202 can be implemented using various known particulate matter measuring sensors.

[0041] The outer cover 300 may have a hollow shape with an open lower side and an internal space for accommodating the measuring unit 200. The open lower side may be mounted to the upper end of the main body 100 and thus combined with the main body 100.

[0042] When the outer cover 300 is combined with the main body 100, the discharge hole 120 can be located inside the hollow interior of the outer cover 300. As a result, the air discharged from the suction fan 201 is guided along the inner side of the outer cover 300 and discharged from the discharge hole 120.

[0043] refer to Figure 1 The air quality measuring instrument of the present invention can be fixed to a support column. For fixing to the support column, the device may also include a bracket 500. One side of the bracket 500 is connected to the main body 100, and the device can be fixed to the support column by a separate fixing rope.

[0044] refer to Figure 3An embodiment of the discharge port 120 of the present invention will be described below. Air flows into and out of the through port 110 and the discharge port 120, so it is important that they do not interfere with each other. Therefore, the through port 110 and the discharge port 120 are preferably configured such that the directions of airflow are different from each other. For example, when the air inflow direction of the through port 110 is vertical, the air discharge direction of the discharge port 120 is preferably configured to be horizontal.

[0045] When the discharge port 120 is oriented horizontally, the discharge pressure of the air discharged from the discharge port 120 can be increased in order to prevent interference during the intake of air flowing into the through port 110.

[0046] That is, the discharge hole 120 can be formed such that the diameter of the portion A2 that exposes to the outside of the main body 100 and discharges air is smaller than the diameter of the portion A1 into which air flows in guided by the outer cover 300. As a result, the air pressure discharged from the discharge hole 120 is increased.

[0047] Using the horizontal cross-section A-A' of the main body 100 as a reference, the air discharge portion A2 of the discharge hole 120 can be formed offset to one side from the virtual reference line L. Simultaneously, the air discharge portion A2 can be extended with a predetermined curvature. Due to this shape of the discharge hole 120, the air discharged from the discharge hole 120 rotates and is discharged, thereby increasing the air travel distance and minimizing interference with the air flowing into the through hole 110.

[0048] refer to Figure 4 In order to improve the measurement accuracy of the measuring sensor 202, a retention partition 410 and a cover 420 may be provided inside the hollow measuring section 200. The retention partition 410 and the cover 420 are used to extend the residence time of the air moving inside the measuring section 200.

[0049] The retaining partition 410 may be a plate with a specified thickness. A through hole 411 for flowing air may be formed through the retaining partition 410. The retaining partition 410 may have a guide flange 412 extending upward along the edge of the through hole 411.

[0050] The cover 420 has a larger diameter than the guide flange 412, covers a portion of the upper end of the guide flange 412, and is spaced a predetermined distance from the upper end of the guide flange 412 to allow air moving towards the through hole 411 to escape. The cover 420 can be securely fixed by other supports (not shown) formed on the side of the guide flange 412. This structure, due to the extended movement path of the air moving towards the through hole 411, can prolong the residence time of air in the measuring section 200.

[0051] refer to Figure 5The measuring unit 200 may also have an opening / closing part 430 that opens and closes depending on whether the suction fan 201 is activated. The opening / closing part 430 is located above the measuring sensor 202 and adjacent to the upper end of the measuring sensor 202.

[0052] The opening / closing part 430 is open when the suction fan 201 is working and closed when the suction fan 201 stops. Closing the opening / closing part 430 prevents foreign objects, dust, etc., contained in the air trapped in the measuring unit 200 from accumulating on the measuring sensor 202. Therefore, the opening / closing part 430 prevents dust or foreign objects from accumulating on the measuring sensor 202 located inside the measuring unit 200. This prevents malfunction of the measuring sensor 202 or a decrease in measuring accuracy.

[0053] The opening and closing part 430 may include a bracket 431 and an opening and closing cover 432.

[0054] The support 431 is formed inside the measuring section 200 and may have a specified thickness. A mounting hole 431h for the support 431 may be formed in the center of the support 431. The mounting hole 431h can penetrate the support 431.

[0055] An opening / closing cover (432; 432-1 to 2) can be configured in the mounting hole 431h. The opening / closing cover 432 may include: at least two opening / closing wings 432-1 that are in contact with one side; and a counterweight 432-2 disposed on top of the opening / closing wings 432-1 to provide a certain weight to the opening / closing wings 432-1. The opening / closing wings 432-1 may be formed of an elastic material so that they bulge in the direction of air movement with a specified radius of curvature.

[0056] When the suction fan 201 is operating, sound pressure is generated between the suction fan 201 and the opening / closing vanes 432-1, causing the facing surfaces of two or more opening / closing vanes 432-1 to separate. Air can flow between the separated opening / closing vanes. Once the suction fan 201 stops operating, the facing surfaces of the separated opening / closing vanes 432-1 come into contact, thus potentially blocking the airflow.

[0057] The counterweight 432-2, with a specified weight, can pressurize the opening and closing wings 432-1 at a specified pressure. By pressurizing with the counterweight 432-2, the opposing sides of the opening and closing wings 432-1 are prevented from tilting up or separating arbitrarily, and air may not leak when the suction fan 201 is not working.

[0058] refer to Figure 6 An embodiment of the outer cover 300 of the present invention will be described.

[0059] The outer cover 300 may include a housing 310, a guide plate 320, an elastic component 330, and a pressure component 340.

[0060] The upper and lower sides of the housing 310 are open, and the lower end can be installed on the edge of the main body 100.

[0061] The guide plate 320 is disposed at the upper end of the housing 310, and can be engaged with the upper end of the housing 310 and can slide in the vertical direction by external force. The upper side of the guide plate 320 is formed into a hemispherical shape. Through the hemispherical guide plate 320, the air discharged from the suction fan 201 can move smoothly along the inner side of the hemispherical guide plate 320 towards the discharge hole 120.

[0062] The elastic member 330 is disposed between the upper end of the guide plate 320 and the housing 310, and can provide elastic support for the guide plate 320. When there is no external force, the guide plate 320 can move back to its original position or remain in place due to the elasticity of the elastic member 330.

[0063] A pressurizing component 340 is formed on the upper outer side of the guide plate 330, which can provide external force to the guide plate 330. When the pressurizing component 340 provides external force to the guide plate 330, the guide plate 330 descends, and the distance between the suction fan 201 and the guide plate 330 becomes closer. Therefore, the movement speed of the air discharged from the suction fan 201 does not decrease, and the discharge pressure of the air discharged from the discharge port 120 can be increased.

[0064] Conversely, when the external force on the pressurizing component 340 is released, the distance between the guide plate 330 and the suction fan 201 increases, the time it takes for the air discharged from the suction fan 201 to reach the guide plate 330 increases, and the movement speed of the air discharged from the suction fan 201 decreases. Therefore, the exhaust pressure of the air discharged from the discharge port 102 decreases.

[0065] The lower surface of the pressurizing component 340 may have a streamlined, protruding shape to exert downward lift. This shape allows external airflow to exert lift on the pressurizing component 340, enabling it to pressurize the guide plate 330 downwards. At this time, the gap between the guide plate 330 and the suction fan 201 narrows, increasing the exhaust pressure of the air discharged from the discharge port 120. Therefore, even in strong winds, the exhaust pressure of the air discharged from the discharge port 120 is high, preventing external air from flowing into the discharge port 120 and causing air backflow.

[0066] Furthermore, while the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. Various modifications can be made by those skilled in the art without departing from the spirit of the invention as claimed in the claims. Such modifications should not be construed as different from the technical concept or prospect of the present invention.

Claims

1. An air quality measuring instrument, characterized in that, include: The main body has an LED module inside, and multiple through holes for air flow and multiple exhaust holes separated from the through holes. The measuring unit, mounted on the upper side of the main body and communicating with the through hole, includes a suction fan that provides suction for drawing air in through the through hole and a measuring sensor for measuring the concentration of particulate matter in the drawn-in air; and The outer cover, installed on the main body, surrounds the measuring part and guides the movement of air so that the air discharged from the suction fan is discharged from the discharge port. The measuring unit also has an opening and closing part inside, which is located above the measuring sensor and is opened and closed depending on whether the suction fan is working. The aforementioned opening and closing parts include: The bracket has a through hole at both ends; and The opening and closing cover, formed in the aforementioned opening hole, consists of at least two opening and closing wings and a counterweight. The opposing sides of the opening and closing wings are in contact and bulge in the direction of air movement. The counterweight provides a certain weight to the opening and closing wings. The aforementioned opening and closing wing is formed of an elastic material so that it bulges in the direction of air movement with a specified radius of curvature.

2. The air quality measuring instrument as described in claim 1, characterized in that, The air flowing into the aforementioned through hole and the aforementioned discharge hole moves in opposite directions. The diameter of the portion (A2) that exposes to the outside of the main body and discharges air is smaller than the diameter of the portion (A1) into which air flows in guided by the outer cover.

3. The air quality measuring instrument as described in claim 2, characterized in that, Based on the horizontal cross-section of the main body, the air discharge portion (A2) of the discharge hole is formed off to one side from the virtual baseline (L).

4. The air quality measuring instrument as described in claim 1, characterized in that, The inner side of the aforementioned measuring section also includes: The partition wall is confined, forming a through-hole for airflow and a guide flange extending upward along the edge of the through-hole; and The cover, with a diameter larger than that of the guide flange, covers a portion of the upper end of the guide flange to alter the path of air moving toward the through hole.

5. The air quality measuring instrument as described in claim 1, characterized in that, The aforementioned outer cover includes: A shell with open top and bottom sides; The guide plate is formed at the upper end of the aforementioned housing to slide in the vertical direction; An elastic component is disposed between the upper end of the guide plate and the housing to provide elastic support for the guide plate; and A pressurizing component is formed on the upper outer side of the guide plate. When external air blows, it exerts a downward lifting force to pressurize the guide plate.

Images