CN110715883A

CN110715883A - Air quality detection device and application thereof

Info

Publication number: CN110715883A
Application number: CN201811070970.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Changzhou Chengxin Investment Partnership (limited Partnership)
Current assignee: Changzhou Chengxin Investment Partnership (limited Partnership)
Priority date: 2018-07-12
Filing date: 2018-09-14
Publication date: 2020-01-21
Also published as: CN209525223U; CN209525320U; CN110716010A; CN110715885A; CN209821020U; CN110715884A; CN210051665U

Abstract

The invention provides an air quality detection device and application thereof, wherein the air quality detection device comprises an air detection main body, a shell and a device body, wherein the air detection main body is provided with an air inlet and an air outlet, the shell is provided with a containing cavity, the air detection main body is contained in the containing cavity, the air detection main body is respectively communicated with the air inlet and the air outlet, and the air inlet and the air outlet are formed in the shell.

Description

Air quality detection device and application thereof

Technical Field

The invention relates to the field of air quality detection, in particular to an air quality detection device and application thereof.

Background

An air quality detector is a device for detecting air quality. With the increase of the frequency of the occurrence of haze weather, people gradually realize the importance of air quality to body health, especially for old people and children with weak resistance, and under the condition of poor air quality, people preferably stand indoor for activities to reduce the frequency of outdoor activities. Due to the variability of individual activity spaces, in order to obtain differentiated air quality data, one typically chooses to purchase an air quality detector to detect the air quality within the activity space.

The air quality detector is a kind of instrument capable of detecting air quality in real time, generally based on the laser detection principle, when dust passes through a photosensitive area of an optical sensor in the air quality detector, particles can scatter incident laser, voltage signals related to dust particle scattering light intensity are obtained through detecting reflected light and converting the reflected light into electric signals through subsequent circuit processing, and then the mass concentration value of the particles in the air can be obtained through data processing and calculation of the voltage signals.

At present, the trend of pursuing lightness and thinness exists for electronic equipment, and users want the volume of the electronic equipment to be smaller and smaller, so that the occupied area can be reduced on one hand, and on the other hand, the electronic equipment is more convenient to carry and use, and especially for an air quality detector, users often want to obtain air quality data of the surrounding environment through the air quality detector at any time. However, once the air quality detector is too large, the user may not want to carry the air quality detector out. In contrast, in view of cost, the miniaturization of electronic devices requires a certain research and development investment, and the larger the volume of the general air detector is, the higher the detection accuracy is, and the smaller the volume is, the lower the detection accuracy is, so that the requirements of various occasions on the air detector are difficult to meet.

Disclosure of Invention

An object of the present invention is to provide an air quality detecting device and an application thereof, wherein the air quality detecting device can be designed to be smaller in size to facilitate the lightness and thinness of the device itself.

Another object of the present invention is to provide an air quality detecting device and its application, wherein the air quality detecting device can be designed to a small height dimension.

Another object of the present invention is to provide an air quality detecting device and its application, wherein an air inlet and an air outlet of the air quality detecting device are located on a top side to facilitate the reduction of the height of the whole air quality detecting device.

Another objective of the present invention is to provide an air quality detection device and an application thereof, wherein the air inlet and the air outlet located on the same side are beneficial to detecting the wind speeds of the air inlet and the air outlet in the subsequent maintenance to determine whether the air quality detection device is blocked.

Another object of the present invention is to provide an air quality detecting device and an application thereof, wherein the air inlet and the air outlet located on the same side can keep other surfaces of the air quality detecting device flat, thereby facilitating the subsequent installation of the air quality detecting device.

Another object of the present invention is to provide an air quality detecting device and an application thereof, wherein the air inlet and the air outlet located on the same side enable other surfaces of the air quality detecting device to be kept flat, thereby facilitating the fixing of the air quality detecting device.

Another object of the present invention is to provide an air quality detecting apparatus and its application, wherein the air quality detecting apparatus can be installed with other devices through the air inlet and the air outlet, and these devices can be installed on the same side of the air quality detecting apparatus.

Another objective of the present invention is to provide an air quality detecting device and an application thereof, wherein the air quality detecting device can provide a relatively flat installation bottom surface.

Another objective of the present invention is to provide an air quality detection device and an application thereof, wherein the air quality detection device includes an air extraction unit, a circuit board unit and a detection unit, and a space where the air extraction unit and the detection unit are located can be at least partially overlapped, so as to facilitate reduction of an area size of the air quality detection device.

Another object of the present invention is to provide an air quality detecting device and an application thereof, wherein the air quality detecting device provides an air duct, wherein the air duct is connected to the air inlet and the air outlet respectively, and the air duct can be at least partially overlapped to facilitate reducing an area size of the air quality detecting device.

Another object of the present invention is to provide an air quality detecting device and its application, wherein the air duct of the air quality detecting device can be designed in various shapes.

According to an aspect of the present invention, there is provided an air quality detecting apparatus, wherein the air quality detecting apparatus includes:

the air detection device comprises an air detection body, a shell and a fan, wherein the shell is provided with a containing cavity, the air detection body is contained in the containing cavity, the air detection body is respectively communicated with the air inlet and the air outlet, and the air inlet and the air outlet are formed in the shell.

According to some embodiments of the invention, the housing has a top surface, wherein the air inlet and the air outlet are formed in the top surface of the housing.

According to some embodiments of the present invention, the air quality detection device further includes an air duct, wherein two ends of the air duct are respectively connected to the air inlet and the air outlet, wherein the air detection body includes an air pumping unit, a detection unit and a circuit board unit, wherein the air pumping unit is located in the air duct, at least a portion of the detection unit is located in the air duct, and the circuit board unit is communicably connected to the detection unit.

According to some embodiments of the invention, the air ducts are located on opposite sides of the circuit board unit.

According to some embodiments of the present invention, the air duct includes a first air duct and a second air duct, the first air duct and the second air duct are located on opposite sides of the circuit board unit, wherein the first air duct is directly communicated with the air inlet and the second air duct, wherein the second air duct is directly communicated with the first air duct and the air outlet, wherein the air pumping unit is located in the first air duct, and the detection unit is located in the second air duct; or the air extracting unit is positioned in the second air channel, and the detecting unit is positioned in the first air channel; or the air extracting unit and the detecting unit are positioned in the first air channel; or the air extraction unit and the detection unit are positioned in the second air duct.

According to some embodiments of the invention, the air duct is located on the same side of the circuit board unit.

According to some embodiments of the invention, the circuit board unit is located above the detection unit and the suction unit.

According to some embodiments of the invention, the circuit board unit is located below the detection unit and the suction unit.

According to some embodiments of the invention, the circuit board unit extends along the top surface of the housing toward a bottom surface of the housing.

According to some embodiments of the invention, the circuit board unit is located at a side of the detection unit; or the circuit board unit is positioned at one side of the air extracting unit.

According to some embodiments of the invention, the air duct comprises a first air duct and a second air duct, wherein the air passes through the air inlet, the first air duct, the second air duct, and the air outlet in sequence, and there is a turn of more than 90 degrees between the first air duct and the second air duct.

According to some embodiments of the invention, the first air duct and the second air duct present a turn in the height direction of more than 90 degrees.

According to some embodiments of the invention, the air extraction unit is located in the first air duct, and the detection unit is located in the second air duct; or the air extracting unit is positioned in the second air channel, and the detecting unit is positioned in the first air channel; or the air extracting unit and the detecting unit are positioned in the first air channel; or the detection unit and the air extraction unit are positioned in the second air duct.

According to some embodiments of the invention, the suction unit and the detection unit are located on opposite sides of the circuit board unit.

According to some embodiments of the invention, the suction unit is located above the circuit board unit, and the detection unit is located below the circuit board unit; or the air extracting unit is positioned below the circuit board unit, and the detecting unit is positioned above the circuit board unit.

According to some embodiments of the invention, the suction unit and the detection unit are located on the same side of the circuit board unit.

According to some embodiments of the invention, the air extraction unit is closer to the air inlet than the detection unit; or the air extracting unit is close to the air inlet compared with the detection unit.

According to some embodiments of the invention, the first air duct and the second air duct present a more than 90 degree turn in the height direction.

According to another aspect of the present invention, there is provided a vehicle comprising:

the air quality detection device comprises a vehicle body and the air quality detection device, wherein the air quality detection device is arranged on the vehicle body.

According to another aspect of the present invention, there is provided an air detection method including the steps of:

guiding air from an air inlet on a top side of a housing into an air duct;

collecting air data in the air duct; and

directing air away from an outlet opening in the top side of the housing.

According to some embodiments of the invention, in the above method, further comprising the step of: the directed air turns more than 90 degrees within the air duct.

Drawings

Fig. 1A is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 1B is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 1C is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

FIG. 2A₁A schematic diagram of an air quality detection apparatus according to a preferred embodiment of the invention is shown.

FIG. 2A₂A schematic diagram of an air quality detection apparatus according to a preferred embodiment of the invention is shown.

FIG. 2B₁A schematic diagram of an air quality detection apparatus according to a preferred embodiment of the invention is shown.

FIG. 2B₂A schematic diagram of an air quality detection apparatus according to a preferred embodiment of the invention is shown.

Fig. 3A is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 3B is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 3C is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 4 is a schematic diagram of an air quality detecting apparatus according to a preferred embodiment of the invention.

Fig. 5 is a schematic diagram of an air quality detecting apparatus according to a preferred embodiment of the invention.

Fig. 6 is a schematic diagram of an air quality detecting apparatus according to a preferred embodiment of the invention.

Fig. 7 is a schematic diagram of an air quality detecting apparatus according to a preferred embodiment of the invention.

Fig. 8A is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 8B is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 8C is a schematic diagram of an air quality detection device according to a preferred embodiment of the invention.

Fig. 8D is a schematic diagram of an air quality detecting device according to a preferred embodiment of the invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1A to 1C, an air quality detecting apparatus 1000 according to a preferred embodiment of the present invention is shown. The air quality detection device 1000 detects particles of a certain size in the air by using a laser scattering principle.

The air quality detecting device 1000 includes a housing 10, an air detecting body 20 and a housing having an air inlet 101 and an air outlet 102, wherein the air inlet 101 and the air outlet 102 are respectively connected to two ends of the air detecting body 20 to allow air to be detected by the air detecting body 20. The housing 10 has a receiving cavity 100, wherein the air detecting body 20 is at least partially received in the receiving cavity 100, and the housing 10 can protect the air detecting body 20, for example, to prevent moisture or dust from entering the air detecting body 20, thereby reducing the influence on the accuracy of the detection result. The air inlet 101 and the air outlet 102 are respectively formed in the housing 10 for air to enter and exit.

The air detecting body 20 includes an air extracting unit 21, a circuit board unit 22 and a detecting unit 23, wherein the air extracting unit 21 guides air from the air inlet 101 to the detecting unit 23, and then guides air from the detecting unit 23 to exit from the air outlet 102. The air-extracting unit 21 enables air to constantly reach the detecting unit 23 to be detected. The detection unit 23 is used for detecting the content of particulate matters in the air so as to judge the air quality for users. The detection unit 23 is communicably connected to the circuit board unit 22, and the detection unit 23 detects that the acquired air quality data can be further processed at the circuit board unit 22.

Further, the air quality detecting device 1000 includes an air duct 30, wherein the air duct 30 is accommodated in the accommodating cavity 100, and two ends of the air duct 30 are respectively connected to the air inlet 101 and the air outlet 102. The air chute 30 is shaped and configured to direct air along the shape and position of the air chute 30. At least a portion of the detecting unit 23 is communicated with the air duct 30 to detect the air in the air duct 30. The air extracting unit 21 is communicated with the air duct 30 to guide air in the air duct 30.

The detecting unit 23 includes a laser emitting module 231 and a laser receiving module 232, wherein the laser receiving module 232 is communicably connected to the circuit board unit 22, the laser emitting module 231 is used for emitting laser, the laser is scattered by particles in the air duct 30, the laser receiving module 232 is used for receiving light of the laser scattered by the particles in the air, and the circuit board unit 22 receives the detection signal from the detecting unit 23 to obtain a detection result about the air quality. Of course, it is understood that the detecting unit 23 may also be communicably connected to an external device to directly transmit the detection result to the external device.

In this example, the air extraction unit 21 is located entirely within the air duct 30 to direct air across the air extraction unit 21. The detecting units 23 are located at both sides of the air duct 30, and detect air passing through the detecting units 23. Optionally, the laser emitting module 231 and the laser receiving module 232 are respectively located at two sides of the air duct 30, and the direction of laser emission intersects with the direction of air flow.

Further, the housing 10 has a top surface 11 and a bottom surface 12, and during use, the bottom surface 12 is generally in contact with the ground, and the top surface 11 and the bottom surface 12 are disposed opposite to each other. The air inlet 101 and the air outlet 102 are respectively formed on the top surface 11. In this way, the air inlet 101 and the air outlet 102 are located on the same side, which is beneficial to reducing the height dimension of the air quality detection device 1000. The air inlet 101 and the air outlet 102 are located on the top surface 11 of the housing 10, and as for the bottom surface 12 of the housing 10, the bottom surface 12 without the air inlet 101 or the air outlet 102 is maintained to have a relatively flat surface, so as to facilitate the installation of the components on the flat bottom surface 12.

The housing 10 has a side surface 13, wherein the side surface 13 is formed between the top surface 11 and the bottom surface 12.

It is understood that the air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10 and are not limited to the way that the air inlet 101 and the air outlet 102 are both upward. The air inlet 101 and the air outlet 102 may be oriented horizontally with respect to the top surface 11, vertically with respect to the top surface 11, or obliquely with respect to the top surface 11.

It is worth mentioning that when the air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10, the side surface 13 and the bottom surface 12 of the housing 10 can be maintained as a relatively flat surface, so that the air quality detecting device 1000 can be placed or mounted on a matching relatively flat surface, and meanwhile, the stability between the air quality detecting device 1000 and a mounting surface is facilitated, and even in some cases, no additional mounting member is required to fix the air quality detecting device 1000 at a mounting position. That is, the air quality detecting device 1000 can achieve a more stable installation by means of the flat side surface 13 and the flat bottom surface 12.

It should be noted that, when the air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10, subsequent maintenance is facilitated or whether the whole air quality detecting device 1000 is working normally is detected. For example, if a maintenance person determines whether the air duct 30 is blocked by detecting the wind speeds of the air inlet 101 and the air outlet 102 during regular maintenance, the detection of the air inlet 101 and the air outlet 102 can be completed on the same side, and even in this process, the air quality detection apparatus 1000 does not need to be detached from an installation position.

Further, in this example, the suction unit 21 and the detection unit 23 are located on both sides of the circuit board unit 22. In this way, the air extracting unit 21, the circuit board unit 22 and the detecting unit 23 of the air detecting body 20 in the housing 10 are compactly arranged in the accommodating chamber 100, thereby facilitating the reduction in size of the entire air quality detecting apparatus 1000, particularly the reduction in area size of the air quality detecting apparatus 1000, because the air extracting unit 21 and the detecting unit 23 overlap to a large extent in the height direction, the size of the air extracting unit 21 and the detecting unit 23 in the length and width directions is reduced.

The air firstly enters the air duct 30 through the air inlet 101, bypasses the circuit board unit 22 by the guiding action of the air extracting unit 21 located above the circuit board unit 22, passes through the detecting unit 23 located below the circuit board unit 22, is detected by the detecting unit 23 to obtain a detection data about the air, and then leaves the air quality detecting device 1000 through the air inlet 101.

Specifically, the air duct 30 includes a first air duct 31 and a second air duct 32, wherein the first air duct 31 is located above the circuit board unit 22, the first air duct 31 is directly communicated with the air inlet 101 and the second air duct 32, the second air duct 32 is located below the circuit board unit 22, and the second air duct 32 is directly communicated with the first air duct 31 and the air outlet 102. The air extracting unit 21 is located in the first air duct 31, and the detecting unit 23 is located in the second air duct 32.

There is a turn of more than 90 degrees between the first air duct 31 and the second air duct 32, that is, the air turns more than 90 degrees around the circuit board unit 22. Further, the first air path 31 and the second air path 32 have a turn of more than 90 degrees in the height direction. That is, the air turns more than 90 degrees back and forth around the circuit board unit 22. The turning design of the air duct 30 enables the air quality detection device 1000 to have a longer flow channel for air circulation based on a smaller area size. It is worth mentioning that when the air flow rate is too high, the diverted air duct 30 can reduce the air flow rate to avoid the highly circulated air from affecting the detection result. In this example, the height direction refers to the Z-axis direction, and the area size refers to the size of the air quality detection apparatus 1000 in the plane of the XY-axes.

Further, the air duct 30 of the air quality detection device 1000 provides at least three turns of air. Firstly the deflection of the air at the location of the suction unit 21, secondly the deflection of the air at the location of the bypass of the circuit board unit 22 and finally the deflection of the air at the location of the outlet opening 102 away from the detection unit 23. With the circuit board unit 22 as a boundary, the air duct 30 may be divided into a first air duct 31 and a second air duct 32, wherein the air extracting unit 21 is located in the first air duct 31, the detecting unit 23 is located in the second air duct 32, one end of the first air duct 31 is communicated with the air inlet 101, the other end of the first air duct 31 is communicated with the second air duct 32, one end of the second air duct 32 is communicated with the first air duct 31, and the other end of the second air duct 32 is communicated with the air outlet 102.

In this example, the second air duct 32 is designed as a "U" or "V" structure, in this way, the volume of the accommodating cavity 100 occupied by the air duct 30 can be saved, so as to leave more installation space for other components in the accommodating cavity 100 of the housing 10. It is understood that the second air duct 32 may be designed to have other shapes, such as an S-shape. Further, in this example, the second air chute 32 provides a corner, and the air is diverted at least 90 degrees before and after passing the corner of the second air chute 32.

In this way, the flow rate of the air quality detecting device 1000 can be stabilized at a more uniform level, for example, in this example, the pressure of the air duct 30 between the air extracting unit 21 and the detecting unit 23 can be maintained at 1.934e +002Pa to 2.580e +001 Pa. The flow velocity of the air duct 30 between the suction unit 21 and the detection unit 23 can be maintained at less than 6.304e +000 meters per second. Optionally, in some examples of the invention, the flow rate of the air duct 30 between the air pumping unit 21 and the detection unit 23 can be maintained at less than 3.152e +000 meters per second to facilitate the detection unit 23 in a smooth working environment.

Even more, the second air duct 32 may be a branched flow path. The first air ducts 31 may also have different shapes to accommodate different sizes or different flow rates of the detecting unit 23.

It is worth mentioning that the second air duct 32 is configured as a flow passage that is self-widening and self-narrowing to ensure the flow speed of the air in the second air duct 32 or the flow speed of the air passing through the detection unit 23.

More specifically, the second air duct 32 has a first end and a second end, wherein the first end is connected to the second air duct 32, wherein the second end is connected to the air outlet 102, and wherein the cross-sectional area of the second flow channel is configured to decrease from the first end to the second end to increase the pressure of the second flow channel, so as to maintain a more stable flow rate of air passing through the detecting unit 23. The air quality detecting device 1000 further includes a filtering unit 40, wherein the filtering unit 40 is used for filtering the air entering the air duct 30 to remove a part of impurities, such as some hairs, dust, etc., which may cause the air duct 30 to be clogged or affect the detecting quality of the air detecting body 20 once entering the air duct 30. In this embodiment, the filter unit 40 is located between the air inlet 101 and the air-extracting unit 21 so that the air is filtered by the filter unit 40 before reaching the air-extracting unit 21. The filter unit 40 may be a screen. Optionally, the filter unit 40 is removably mounted to the air duct 30 to facilitate timely replacement of the filter unit 40 to prevent blockage of the air duct 30 at the filter unit 40.

Further, in this example, the length direction of the first air duct 31 and the length direction of the second air duct 32 are approximately perpendicular.

Further, it is understood that the positions of the air inlet 101 and the air outlet 102 may be interchanged. Changing the direction of the air-extracting unit 21, the air inlet 101 can be used for air to leave, and the air outlet 102 can be used for air to enter.

According to another aspect of the present invention, there is provided an air detection method, comprising the steps of:

guiding air from an air inlet 101 of a top surface 11 of a housing 10 into an air duct 30;

collecting air data at the air duct 30; and

air is directed out of an outlet 102 of the top surface 11 of the housing 10.

According to an embodiment of the present invention, in the method, the method further includes: the directed air turns more than 90 degrees within the air chute 30.

According to an embodiment of the present invention, in the method, the method further includes: the guiding air turns more than 90 degrees in the height direction within the air duct 30.

According to an embodiment of the present invention, in the method, the method further includes: the air is directed around a circuit board unit 22.

According to an embodiment of the present invention, in the method, the method further includes: air is directed from above a circuit board unit 22 to below the circuit board unit 22.

According to an embodiment of the present invention, in the method, the method further includes: the air is directed to make at least three turns in the air duct 30.

According to another aspect of the present invention, a vehicle is provided, wherein the vehicle comprises a vehicle body and at least one air quality detecting device 1000, wherein the air quality detecting device 1000 is disposed on the vehicle body. The air quality detecting body may be provided outside or inside the vehicle body, that is, the air quality detecting body may detect the air quality inside the vehicle or the air quality outside the vehicle.

Refer to FIG. 2A₁And FIG. 2A₂There is shown a modified embodiment of the air quality detecting device 1000 according to the above preferred embodiment of the present invention.

The present embodiment is different from the above embodiments in the positions of the air extracting unit 21 and the detecting unit 23.

In this example, the air extracting unit 21 is located in the second air duct 32, the detecting unit 23 is the first air duct 31, and the air reaches the air extracting unit 21 located in the second air duct 32 through the air inlet 101, then reaches the first air duct 31 from bottom to top, and is detected by the detecting unit 23 located in the first air duct 31.

It is understood that the positions of the air inlet 101 and the air outlet 102 can be interchanged, and air passes through the air inlet 101, passes through the detecting unit 23 located in the first air duct 31, then winds around the air pumping unit 21 located in the second air duct 32, and is exhausted from the air pumping unit 21 to the air outlet 102.

FIG. 2B₁And FIG. 2B₂Another variant embodiment of the air quality detecting device 1000 is shown, the air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filtering unit 40, and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22, and a detecting unit 23, wherein the air duct 30 includes a first air duct 31 and a second air duct 32, wherein the first air duct 31 is located above the circuit board unit 22, and the second air duct 32 is located below the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10.

In this example, the length direction of the first air duct 31 and the length direction of the second air duct 32 are parallel or nearly parallel to each other.

Specifically, the air duct 30 has a turning port formed between the first air duct 31 and the second air duct 32 for turning the air while bypassing the circuit board unit 22.

The length direction of the first air duct 31 refers to the length direction of the projection of the air inlet 101 and the turning port on the XY plane, and refers to the direction of the projection of the air inlet 101 on the XY plane toward the projection of the turning port on the XY plane or the direction of the projection of the turning port on the XY plane toward the projection of the air inlet 101 on the XY plane.

In the example shown in fig. 1A to 1C, the length direction of the first air path 31 and the length direction of the second air path 32 are approximately perpendicular. In this example, the length direction of the first air duct 31 and the length direction of the second air duct 32 are parallel or nearly parallel to each other. That is, the air inlet 101, the air outlet 102 and the first turning port are located approximately on the same straight line with respect to the projection on the XY plane. After entering the first air duct 31 from the air inlet 101, the air is diverted into the second air duct 32 through the turning opening.

On the other hand, the housing 10 of the air quality detecting apparatus 1000 has four side surfaces 13, the air inlet 101 and the side surface 13 near the turning port are disposed oppositely, and in the example shown in fig. 1A to 1C, the turning position between the first air duct 31 and the second air duct 32 and the side surface 13 near the air inlet 101 are disposed adjacently.

In this example, in this way, the air quality detection apparatus 1000 can be designed to be more compact, and in particular, reduction in the size of the area of the air quality detection apparatus 1000 is facilitated.

Fig. 3A to 3C show another modified embodiment of the air quality detecting device 1000, the air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filtering unit 40, and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22 and a detecting unit 23, and the air duct 30 is located at one side of the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10.

In this example, the circuit board unit 22 is located above the detection unit 23 and the suction unit 21, that is, the circuit board unit 22 is closer to the top surface 11 of the housing 10 than the detection unit 23 and the suction unit 21.

Two ends of the air duct 30 are respectively communicated with the air inlet 101 and the air outlet 102, wherein at least a part of the detecting unit 23 is located in the air duct 30, and the air extracting unit 21 is located in the air duct 30.

In this example, at least a portion of the air duct 30 is formed below the circuit board unit 22. That is, all the air ducts 30 may be formed below the circuit board unit 22, or a part of the air ducts 30 may be formed above the circuit board unit 22, and the air ducts 30 above the circuit board unit 22 may be used to accommodate some devices, such as a filtering device, a filter screen, a water filter, etc., or other types of detection devices, such as a temperature measuring element, an element for measuring moisture level, etc.

Further, in the present example, there is a turning of the air duct 30 located below the circuit board unit 22, and the turning of the air duct 30 located below the circuit board unit 22 means that there is a virtual XY plane below the circuit board unit 22, and the air duct 30 turns from above the virtual XY plane to below the virtual XY plane. This facilitates reduction in the size of the air quality detection apparatus 1000. That is, the air duct 30 located below the circuit board unit 22 is divided into two air ducts 30 with different heights, a first air duct 31 and a second air duct 32, wherein the first air duct 31 communicates the air outlet 102 and the second air duct 32, and the second air duct 32 communicates the air inlet 101 and the first air duct 31. The air extracting unit 21 is located in the second air duct 32, and the detecting unit 23 is located in the first air duct 31.

In the present embodiment, the air extracting unit 21 and the detecting unit 23 at least partially overlap in the height direction, so as to facilitate the reduction of the area size of the air extracting unit 21 and the detecting unit 23.

In other examples of the present invention, the pumping unit 21 and the detecting unit 23 may not overlap in a height direction.

Fig. 4 shows another modified embodiment of the air quality detecting device 1000, the air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filter unit 40, and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22, and a detecting unit 23, and the air duct 30 is located at one side of the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10.

In this example, the circuit board unit 22 is located below the detection unit 23 and the suction unit 21. That is, the circuit board unit 22 is closer to the bottom surface 12 of the housing 10 than the detection unit 23 and the air-extracting unit 21.

In this example, at least a portion of the air duct 30 is formed above the circuit board unit 22. That is, all the air ducts 30 may be formed above the circuit board unit 22, or a part of the air ducts 30 may be formed below the circuit board unit 22, and the air ducts 30 located below the circuit board unit 22 may be used to accommodate some devices, such as a filtering device, a filter screen, a water filter, etc., or other types of detection devices, such as a temperature measuring element, a moisture content measuring element, etc.

Further, in the present example, there is a turning of the air duct 30 above the circuit board unit 22, and the turning of the air duct 30 above the circuit board unit 22 means that there is a virtual XY plane above the circuit board unit 22, and the air duct 30 turns from above the virtual XY plane to below the virtual XY plane. This facilitates reduction in the size of the air quality detection apparatus 1000. That is, the air duct 30 located above the circuit board unit 22 is divided into two portions of the air duct 30 having different heights.

Fig. 5 shows another modified embodiment of the air quality detecting device 1000, the air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filter unit 40, and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22, and a detecting unit 23, and the air duct 30 is located at one side of the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10. In this example, the circuit board unit 22 is provided to extend from the top surface 11 of the housing 10 toward the bottom surface 12 of the housing 10. In other examples of the present invention, the circuit board unit 22 is disposed to extend from the side 13 of the housing 10 toward the opposite side 13.

Further, the air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and the air duct 30 portions corresponding to the air extracting unit 21 and the detecting unit 23 are located on the same plane. That is, there is no overlap between the portions of the air ducts 30 corresponding to the air extracting unit 21 and the detecting unit 23.

Fig. 6 shows another modified embodiment of the air quality detecting device 1000, the air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filter unit 40, and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22, and a detecting unit 23, and the air duct 30 is located at one side of the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10.

The air extracting unit 21 and the detecting unit 23 are respectively located at two sides of the circuit board unit 22, and the air duct 30 reaches the detecting unit 23 after passing through the air extracting unit 21 and then bypassing the circuit board unit 22.

The air duct 30 includes a first air duct 31 and a second air duct 32, wherein the first air duct 31 is located above the circuit board unit 22, the first air duct 31 is directly connected to the air inlet 101 and the second air duct 32, the second air duct 32 is located below the circuit board unit 22, and the second air duct 32 is directly connected to the first air duct 31 and the air outlet 102. The air extracting unit 21 is located in the first air duct 31, and the detecting unit 23 is located in the second air duct 32.

The second air duct 32 may be configured to have a wave shape. The second air duct 32 having the wavy shape can control the air flow speed in the second air duct 32.

Fig. 7 shows another embodiment of the air quality detecting device 1000 of the present invention.

The air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30, a filtering unit 40 and a housing having an air inlet 101 and an air outlet 102, wherein the housing 10 has a receiving cavity 100, the air detecting body 20 includes an air extracting unit 21, a circuit board unit 22 and a detecting unit 23, and the air duct 30 is located at one side of the circuit board unit 22. The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13. The air inlet 101 and the air outlet 102 form the top surface 11 of the housing 10.

The circuit board unit 22 is provided to extend from the top surface 11 of the housing 10 toward the bottom surface 12 of the housing 10.

The air extracting unit 21 and the detecting unit 23 are located at the same side of the circuit board unit 22, and the air duct 30 is located at one side of the circuit board unit 22.

The air duct 30 includes a first air duct 31 and a second air duct 32, wherein at least a portion of the first air duct 31 and at least a portion of the second air duct 32 overlap each other, and the first air duct 31 is communicated with the second air duct 32.

The air extracting unit 21 is located in the first air duct 31, the detecting unit 23 is located in the second air duct 32, and a corner exceeding 90 degrees exists at a joint of the first air duct 31 and the second air duct 32.

Further, in the present example, the air extracting unit 21 and the detecting unit 23 overlap each other to facilitate reduction in the size of the air quality detecting apparatus 1000 in the height direction.

Referring to fig. 8A, an air quality detecting device 1000 according to another preferred embodiment of the present invention is shown.

The air quality detecting device 1000 includes a housing 10, an air detecting body 20, an air duct 30 and a housing having an air inlet 101 and an air outlet 102, wherein one end of the air duct 30 is connected to the air inlet 101, the other end of the air duct 30 is connected to the air outlet 102, and the air duct 30 is formed between the air inlet 101 and the air outlet 102.

The housing 10 has a receiving cavity 100, wherein the air detecting body 20 and the air duct 30 are received in the receiving cavity 100, and the air detecting body 20 is disposed on the air duct 30 in a manner that at least a portion of the air detecting body 20 is exposed to the air duct 30.

The air detection body 20 includes a circuit board unit 22 and a detection unit 23, wherein the circuit board unit 22 is communicably connected to the detection unit 23, and the circuit board unit 22 is capable of receiving detection data from the detection unit 23. The detection unit 23 and the circuit board unit 22 are accommodated in the accommodation chamber 100. The detection unit 23 is at least partially exposed to the wind tunnel 30 to detect air passing through the wind tunnel 30.

The detection unit 23 includes a laser emitting module 231 and a laser receiving module 232, wherein the laser emitting module 231 emits laser toward the air duct 30 to scatter the laser by air, the laser receiving module 232 receives the scattered laser, and the circuit board unit 22 receives the detection signal from the detection unit 23 to obtain a detection result about air quality.

The air detecting body 20 may further include an air extracting unit 21, wherein the air extracting unit 21 is located in the accommodating cavity 100, and air can pass through the air duct 30 at a certain flow rate under the driving of the air extracting unit 21.

The air quality detecting device 1000 further includes a filtering unit 40, wherein the filtering unit 40 is used for filtering the air entering the air duct 30 to remove a part of impurities, such as some hairs, dust, etc., which may cause the air duct 30 to be clogged or affect the detecting quality of the air detecting body 20 once entering the air duct 30. In this embodiment, the filter unit 40 is located between the air inlet 101 and the air-extracting unit 21 so that the air is filtered by the filter unit 40 before reaching the air-extracting unit 21. The filter unit 40 may be a screen. Optionally, the filter unit 40 is removably mounted to the air duct 30 to facilitate timely replacement of the filter unit 40 to prevent blockage of the air duct 30 at the filter unit 40.

The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13, wherein the top surface 11 and the bottom surface 12 are oppositely disposed and the side surface 13 is formed between the top surface 11 and the bottom surface 12.

The circuit board unit 22 is close to the bottom surface 12 of the housing 10 with respect to the top surface 11. The air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and are located in the accommodating cavity 100 between the circuit board unit 22 and the top surface 11 of the housing 10.

The air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10, so that the bottom surface 12 can provide a flat surface for mounting on the circuit board unit 22.

The air duct 30 is located between the circuit board unit 22 and the top surface 11 of the housing 10 and the air duct 30 provides at least two turns, one of which is located between the air inlet 101 and the air detecting body 20 and the other is located between the air outlet 102 and the air detecting body 20, so that the orientation of the air before and after entering the air quality detecting device 1000 changes by nearly 180 degrees.

It is to be understood that the positional relationship of the suction unit 21, the detection unit 23, and the circuit board unit 22 is not limited to the above positional relationship.

According to some embodiments of the present invention, the circuit board unit 22 is located between the air extracting unit 21 and the detecting unit 23, and the circuit board unit 22 is disposed to extend along the direction of the bottom surface 12 toward the top surface 11. The air extracting unit 21 and the detecting unit 23 are respectively located at two sides of the circuit board unit 22.

According to other embodiments of the present invention, wherein the top surface 11 of the housing 10 is closer to the circuit board unit 22 than the bottom surface 12 of the housing 10, the pumping unit 21 and the detection unit 23 are located between the circuit board unit 22 and the bottom surface 12 of the housing 10. It is understood that the suction unit 21 and the detection unit 23 are accommodated in the accommodation chamber 100 along the length and width directions of the circuit board unit 22. The suction unit 21 and the detection unit 23 may be accommodated in the accommodation chamber 100 along the height direction of the circuit board unit 22.

The height direction of the circuit board unit 22 refers to a direction in which the bottom surface 12 of the housing 10 faces the top surface 11 or a direction in which the top surface 11 of the housing 10 faces the bottom surface 12 of the housing 10.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and the air extracting unit 21 and the detecting unit 23 extend along the direction from the top surface 11 of the housing 10 to the bottom surface 12 of the housing 10. The air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10. The entire air quality detecting apparatus 1000 has a large size in the height direction. That is, the air quality detecting device 1000 is entirely in a "high, flat" form.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The air extracting unit 21 and the detecting unit 23 are respectively located at two sides of the circuit board unit 22, and the air extracting unit 21 and the detecting unit 23 are respectively formed by extending along the top surface 11 of the housing 10 towards the bottom surface 12 of the housing 10. The air inlet 101 and the air outlet 102 are formed on the top surface 11 of the housing 10.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The suction unit 21 and the detection unit 23 are located on the same side of the circuit unit, and the detection unit 23 is closer to the circuit board unit 22 than the suction unit 21.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The suction unit 21 and the detection unit 23 are located on the same side of the circuit board unit 22, and the suction unit 21 is closer to the circuit board unit 22 than the detection unit 23.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and the air extracting unit 21 and the detecting unit 23 do not overlap in the height direction, so as to facilitate the reduction in size of the air quality detecting device 1000 in the length and width directions.

According to other embodiments of the present invention, the circuit board unit 22 is disposed to extend from the top surface 11 toward the bottom surface 12 of the housing 10. The air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and the air extracting unit 21 and the detecting unit 23 are at least partially overlapped in the height direction, so as to facilitate the reduction of the size of the air quality detecting device 1000 in the height direction.

Referring to fig. 8B, a modified embodiment of the air quality detecting device 1000 according to the above preferred embodiment of the present invention is illustrated.

The air quality detecting device 1000 further includes a filtering unit 40, wherein the filtering unit 40 is used for filtering the air entering the air duct 30 to remove a part of impurities, such as some hairs, dust, etc., which may cause the air duct 30 to be clogged or affect the detecting quality of the air detecting body 20 once entering the air duct 30.

In this embodiment, the filter unit 40 is located between the air inlet 101 and the air-extracting unit 21 so that the air is filtered by the filter unit 40 before reaching the air-extracting unit 21. The filter unit 40 may be a screen. Optionally, the filter unit 40 is removably mounted to the air duct 30 to facilitate timely replacement of the filter unit 40 to prevent blockage of the air duct 30 at the filter unit 40.

The housing 10 has a top surface 11, a bottom surface 12 and a side surface 13, wherein the top surface 11 and the top surface 11 are oppositely disposed and the side surface 13 is formed between the top surface 11 and the bottom surface 12.

The circuit board unit 22 is close to the top surface 11 of the housing 10 with respect to the bottom surface 12. The air extracting unit 21 and the detecting unit 23 are located on the same side of the circuit board unit 22, and are located in the accommodating cavity 100 between the circuit board unit 22 and the bottom surface 12 of the housing 10.

Referring to fig. 8C, a modified embodiment of the air quality detecting device 1000 according to the above preferred embodiment of the present invention is illustrated.

The circuit board unit 22 extends along the top surface 11 of the housing 10 toward the bottom surface 12 of the housing 10. The suction unit 21 and the detection unit 23 are located on opposite sides of the circuit board unit 22.

The air duct 30 is located between the circuit board unit 22 and the top surface 11 of the housing 10 and the air duct 30 provides at least two turns, one of which is located at the air pumping unit 21 and the other of which is located from the air pumping unit 21 to the detection unit 23, so that the orientation of the air before and after entering the air quality detection device 1000 changes by nearly 180 degrees.

Referring to fig. 8D, a modified embodiment of the air quality detecting device 1000 according to the above preferred embodiment of the present invention is illustrated.

The circuit board unit 22 is mounted to the housing 10 in a vertical manner, the suction unit 21 and the detection unit 23 are located on the same side of the circuit board unit 22, and the detection unit 23 is located closer to the circuit board unit 22 than the suction unit 21.

The air duct 30 extends vertically downward from the air inlet 101 to the air extraction unit 21, extends vertically upward to the air outlet 102 after turning, and the detection unit 23 is located at a preset position of the air duct 30.

According to another aspect of the present invention, there is provided an air quality detecting method, wherein the air quality detecting method includes the steps of:

introducing air into an air duct 30 from an air inlet 101 at a top side of a housing 10;

collecting air quality data; and

air is directed out of an outlet 102 at the top side of the housing 10.

According to some embodiments of the invention, in the above method, the air is directed to turn more than 90 degrees in the air duct 30.

According to some embodiments of the invention, in the method, the air is guided by an air extraction unit 21 and detected by a detection unit 23, and the portion of the air duct 30 corresponding to the air extraction unit 21 and the detection unit 23 is turned more than 90 degrees.

According to some embodiments of the present invention, in the above method, the air duct 30 bypasses a circuit board unit 22.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An air quality detection device, comprising:

2. The air quality detection device of claim 1, wherein the housing has a top surface, wherein the air inlet and the air outlet are formed in the top surface.

3. The air quality detecting device according to claim 2, wherein the air quality detecting device further comprises an air duct, wherein both ends of the air duct are respectively communicated with the air inlet and the air outlet, wherein the air detecting body comprises an air extracting unit, a detecting unit and a circuit board unit, wherein the air extracting unit is located in the air duct, at least a part of the detecting unit is located in the air duct, and the circuit board unit is communicably connected to the detecting unit.

4. The air quality detection device of claim 3, wherein the air ducts are located on opposite sides of the circuit board unit.

5. The air quality detection device of claim 4, wherein the air channel comprises a first air channel and a second air channel, the first air channel and the second air channel are located on opposite sides of the circuit board unit, wherein the first air channel is directly communicated with the air inlet and the second air channel, wherein the second air channel is directly communicated with the first air channel and the air outlet, wherein the air pumping unit is located in the first air channel, and the detection unit is located in the second air channel; or the air extracting unit is positioned in the second air channel, and the detecting unit is positioned in the first air channel; or the air extracting unit and the detecting unit are positioned in the first air channel; or the air extraction unit and the detection unit are positioned in the second air duct.

6. The air quality detection device of claim 3, wherein the air duct is located on the same side of the circuit board unit.

7. The air quality detection device of claim 6, wherein the circuit board unit is located above the detection unit and the air extraction unit.

8. The air quality detection device of claim 6, wherein the circuit board unit is located below the detection unit and the air extraction unit.

9. The air quality detection device of claim 6, wherein the circuit board unit extends along the top surface of the housing toward a bottom surface of the housing.

10. The air quality detection device of claim 9, wherein the circuit board unit is located on a side of the detection unit; or the circuit board unit is positioned at one side of the air extracting unit.

11. The air quality detection device according to any one of claims 6 to 10, wherein the air duct includes a first air duct and a second air duct, wherein the air passes through the air inlet, the first air duct, the second air duct, and the air outlet in this order, and a turn of more than 90 degrees is present between the first air duct and the second air duct.

12. The air quality detection device of claim 11, wherein the first air chute and the second air chute present a turn in the height direction of more than 90 degrees.

13. The air quality detection device of claim 12, wherein the air extraction unit is located in the first air duct and the detection unit is located in the second air duct; or the air extracting unit is positioned in the second air channel, and the detecting unit is positioned in the first air channel; or the air extracting unit and the detecting unit are positioned in the first air channel; or the detection unit and the air extraction unit are positioned in the second air duct.

14. The air quality detection device of claim 3, wherein the air extraction unit and the detection unit are located on opposite sides of the circuit board unit.

15. The air quality detection device of claim 14, wherein the air extraction unit is located above the circuit board unit, and the detection unit is located below the circuit board unit; or the air extracting unit is positioned below the circuit board unit, and the detecting unit is positioned above the circuit board unit.

16. The air quality detection device of claim 3, wherein the air extraction unit and the detection unit are located on the same side of the circuit board unit.

17. The air quality detection device of claim 16, wherein the air extraction unit is closer to the air inlet than the detection unit; or the air extracting unit is close to the air inlet compared with the detection unit.

18. The air quality detection device of claim 16, wherein the air duct comprises a first air duct and a second air duct, wherein air passes through the air inlet, the first air duct, the second air duct, and the air outlet in sequence, and wherein there is a more than 90 degree turn between the first air duct and the second air duct.

19. The air quality detection device of claim 18, wherein the first air chute and the second air chute present more than a 90 degree turn in the height direction.

20. The air quality detection device of claim 18, wherein the air extraction unit is located in the first air duct and the detection unit is located in the second air duct; or the air extracting unit is positioned in the second air channel, and the detecting unit is positioned in the first air channel; or the air extracting unit and the detecting unit are positioned in the first air channel; or the detection unit and the air extraction unit are positioned in the second air duct.

21. The air quality detection device of claim 3, wherein the pressure of the air duct between the air extraction unit and the detection unit is in a range of 1.934e +002Pa to 2.580e +001 Pa.

22. The air quality detection device of claim 3, wherein the flow velocity of the air duct between the air extraction unit and the detection unit is less than 6.304 m/s.

23. A vehicle, characterized by comprising:

a vehicle body and an air quality detection device according to any one of claims 1 to 22, wherein the air quality detection device is provided to the vehicle body.

24. An air detection method, comprising the steps of:

guiding air from an air inlet on a top side of a housing into an air duct;

collecting air data in the air duct; and

directing air away from an outlet opening in the top side of the housing.

25. The air detection method according to claim 24, wherein in the above method, further comprising the step of: the directed air turns more than 90 degrees within the air duct.