CN111024894A - Air detection method - Google Patents
Air detection method Download PDFInfo
- Publication number
- CN111024894A CN111024894A CN201911252243.3A CN201911252243A CN111024894A CN 111024894 A CN111024894 A CN 111024894A CN 201911252243 A CN201911252243 A CN 201911252243A CN 111024894 A CN111024894 A CN 111024894A
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- CN
- China
- Prior art keywords
- air
- detection
- fan
- time
- detection method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
Abstract
The invention provides an air detection method, which comprises the following steps: acquiring the service time of detection equipment, and determining the detection precision and a threshold value; acquiring the rotating speed of a fan; acquiring the filth blockage condition of the filter screen, and confirming filth blockage parameters; according to the three parameters, the fan is controlled to operate for a first time period according to the first wind speed, the fan is controlled to operate for a second time period according to the second wind speed, the detection value of the sensor is obtained at intervals, if the data are unstable, the fan is controlled to operate for a third time period according to the third speed, and the last detection value is obtained after the value is stable.
Description
Technical Field
The invention relates to the field of detection, in particular to an air detection method.
Background
The existing air detection method for detecting the concentration of formaldehyde has the defects of inaccurate detection result due to small space and insufficient circulation.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, an object of one aspect of the present invention is to provide an air detection method.
Another aspect of the present invention is directed to an air cleaning apparatus including the above air detecting method.
To achieve the above object, an embodiment of an aspect of the present invention provides an air detection method, including the steps of:
acquiring the service time of detection equipment, and determining the detection precision and a threshold value;
acquiring the rotating speed of a fan;
acquiring the filth blockage condition of the filter screen, and confirming filth blockage parameters;
and controlling the fan to operate for a first time period according to the three parameters, then controlling the fan to operate for a second time period according to the second wind speed, obtaining the detection value of the sensor at intervals, if the data is unstable, then controlling the fan to operate for a third time period according to the third speed, and obtaining the final detection value after the value is stable.
The service time of the detection equipment is acquired for N months, and the detection precision is (24-N)/24 of the original degree.
The first period is 1m, the second period is 5m, and the third period is 5 m.
The interval time is 1 m.
The detection apparatus includes: a box body, the air intake has been seted up on the box body, installation space is injectd to the box body, be provided with detection device in the installation space, detection device sets up the below of air intake, the air intake is the air-inlet grille, the slope of air-inlet grille sets up, the air-inlet grille bottom extends to the direction of keeping away from detection device, the air-inlet grille deviates from one side of detection device is provided with along the protruding cambered surface on grid surface to form the kang da wind-guiding face.
The air inlet grille with the one side that detection device is relative is 45 degrees with the contained angle of horizontal plane.
The embodiment of the invention has the following beneficial effects:
the embodiment of the air detection method comprises the steps of controlling a fan to operate for a first time period according to a first air speed, controlling the fan to operate for a second time period according to a second air speed, obtaining a detection value of a sensor at intervals, controlling the air speed to operate for a third time period according to a third speed if data are unstable, obtaining a final detection value after the value is stable, enabling gas to generate a coanda wall attachment effect due to a convex cambered surface on the surface of a grid, enabling the gas to flow to a high position along the convex cambered surface and be pressed down towards a direction close to a detection device to generate a parabola, enabling the gas to be blown into a box body better, enabling the gas at the innermost side in the box body to generate disturbance and generate no dead angle, enabling detection to be more accurate, and enabling the top of the convex cambered surface of an air inlet grid and the vertical line of the surface of the grid to be located at two thirds from top to bottom of the surface of, when gas enters, the gas pressure is increased because the air inlet is gradually reduced, the flow rate is increased, when the gas flows through the top end of the cambered surface, the air inlet is enlarged, the momentum is converted into static pressure, the gas can be blown farther without dead angles, and the wind enters the detector to generate the degree of health and effectiveness and detect more accurately through multi-time-period and multi-interval speed control.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an exploded schematic view of an air detection method according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
An air detection method according to some embodiments of the present invention is described below with reference to fig. 1.
An embodiment of an aspect of the present invention provides an air detection method, including the following steps:
acquiring the service time of detection equipment, and determining the detection precision and a threshold value;
acquiring the rotating speed of a fan;
acquiring the filth blockage condition of the filter screen, and confirming filth blockage parameters;
and controlling the fan to operate for a first time period according to the three parameters, then controlling the fan to operate for a second time period according to the second wind speed, obtaining the detection value of the sensor at intervals, if the data is unstable, then controlling the fan to operate for a third time period according to the third speed, and obtaining the final detection value after the value is stable.
The service time of the detection equipment is acquired for N months, and the detection precision is (24-N)/24 of the original degree.
The first period is 1m, the second period is 5m, and the third period is 5 m.
The interval time is 1 m.
As shown in fig. 1, the detection apparatus includes: a box body, air intake 1 has been seted up on the box body, installation space is injectd to the box body, be provided with detection device 2 in the installation space, detection device sets up the below of air intake, the air intake is air-inlet grille 3, air-inlet grille slope sets up, air-inlet grille bottom extends to the direction of keeping away from detection device, air-inlet grille deviates from one side of detection device is provided with along the protruding cambered surface on grid surface to form the kang da wind-guiding surface. The box body comprises an upper cover 4, a base 5 and a middle frame 6, the detection device is assembled on the middle frame, and the upper cover and the base are respectively connected with the middle frame. Four corners of the upper cover are respectively provided with a fastener 7 which inclines outwards, and a fastener top chuck 8 is clamped in a clamping groove on the middle frame. The air inlet grille with the one side that detection device is relative is 45 degrees with the contained angle of horizontal plane. The arc-shaped top of the convex cambered surface of the air inlet grille and the vertical line of the surface of the grille are positioned at the two-thirds position from top to bottom of the surface of the grille.
In summary, in the air detection method of this embodiment, according to the three parameters, the fan is controlled to operate at the first air speed for the first time period, the fan is controlled to operate at the second air speed for the second time period, the detection value of the sensor is obtained at the interval time, if the data is unstable, the fan is controlled to operate at the third air speed for the third time period, after the value is stable, the last detection value is obtained, meanwhile, due to the convex arc surface on the surface of the grille, the gas generates coanda wall attachment effect, the gas can be pressed down in the direction close to the detection device while flowing to the high position along the convex arc surface, a parabola is generated, the gas can be better blown into the box body, the gas at the innermost side in the box body is disturbed, no dead angle is generated, the detection is more accurate, and meanwhile, because the arc top of the convex arc surface of the air inlet grille and the perpendicular line on the surface of the grille are located, when gas enters, the gas pressure is increased because the air inlet is gradually reduced, the flow rate is increased, when the gas flows through the top end of the cambered surface, the air inlet is enlarged, the momentum is converted into static pressure, the gas can be blown farther without dead angles, and the wind enters the detector to generate the degree of health and effectiveness and detect more accurately through multi-time-period and multi-interval speed control.
In the description of the present invention, the term "plurality" means two or more unless explicitly specified or limited otherwise; the terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, or an electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present specification, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An air detection method is characterized by comprising the following steps:
acquiring the service time of detection equipment, and determining the detection precision and a threshold value;
acquiring the rotating speed of a fan;
acquiring the filth blockage condition of the filter screen, and confirming filth blockage parameters;
and controlling the fan to operate for a first time period according to the three parameters, then controlling the fan to operate for a second time period according to the second wind speed, obtaining the detection value of the sensor at intervals, if the data is unstable, then controlling the fan to operate for a third time period according to the third speed, and obtaining the final detection value after the value is stable.
2. The air detection method according to claim 1, wherein the service time of the detection device is acquired in Nmonths, and the detection precision is (24-N)/24 of the original degree.
3. The air detection method according to claim 2, wherein the first period of time is 1m, the second period of time is 5m, and the third period of time is 5 m.
4. The air detection method according to claim 3, wherein the interval time is 1 m.
5. The air detection method according to claim 1, wherein the detection apparatus comprises: a box body, the air intake has been seted up on the box body, installation space is injectd to the box body, be provided with detection device in the installation space, detection device sets up the below of air intake, the air intake is the air-inlet grille, the slope of air-inlet grille sets up, the air-inlet grille bottom extends to the direction of keeping away from detection device, the air-inlet grille deviates from one side of detection device is provided with along the protruding cambered surface on grid surface to form the kang da wind-guiding face.
6. The air detection method of claim 1, wherein an angle between a surface of the air intake grille opposite to the detection device and a horizontal plane is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252243.3A CN111024894A (en) | 2019-12-09 | 2019-12-09 | Air detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252243.3A CN111024894A (en) | 2019-12-09 | 2019-12-09 | Air detection method |
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| CN111024894A true CN111024894A (en) | 2020-04-17 |
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| CN201911252243.3A Pending CN111024894A (en) | 2019-12-09 | 2019-12-09 | Air detection method |
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Application publication date: 20200417 |
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