A purification device with a light source and a purifier

Abstract

The present invention discloses a purification device with a light source and a purifier. The purification device with a light source includes a housing, an air duct arranged inside the housing, and a purification module. A first light source for irradiating the air duct cavity is arranged in the air duct downstream of the purification module. The projection area of the first light source is an opaque wall surface. A visual light channel is provided on the housing for observing the irradiation of the first light source on the air duct cavity from the outside of the housing. Compared with the prior art, in the purification device with a light source of the present invention, a first light source for irradiating the air duct cavity is arranged in the air duct downstream of the purification module, an opaque wall surface is arranged at the projection area of the first light source, and a visual light channel is provided on the housing for observing the irradiation of the first light source on the air duct cavity from the outside of the housing. By irradiating the air flow with the first light source, within the wind speed range, users can see relatively clear dust particles through the visual light channel, so as to realize the perception of the air quality after treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and particularly to a purification device and a purifier with a light source. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of life. Ensuring the air quality of the living environment is the basis for people to pursue a high-quality life. The purification device is a product generated for purifying air. After the air enters the purification device, the purification device purifies the air and then discharges it. Dust, harmful gases and substances in the purified air will be removed by the purification device. However, the purification process of the purification device on the air is an invisible process. For such a purification device, after purifying the air, users cannot intuitively see the purification effect of the air, and when the purification effect deteriorates after the purification device is used for a long time, users cannot perceive it in time. Summary of the Invention

[0003] The purpose of the present invention is to provide a purification device and a purifier with a light source to solve the above technical problems.

[0004] A purification device with a light source includes a housing, an air duct and a purification module arranged in the housing. A first light source for irradiating the air duct cavity is arranged in the air duct downstream of the purification module. The projection of the first light source is an opaque wall surface, and a visual light channel for observing the first light source irradiating the air duct cavity from the outside of the housing is arranged on the housing.

[0005] According to an embodiment of the present invention, the light emitted by the first light source is the light emitted by atomic stimulated radiation. The power of the light emitted by atomic stimulated radiation is 0.1 mW to 5 mW; the wavelength of the light emitted by atomic stimulated radiation is 300 - 700 nm; the light emitted by atomic stimulated radiation is continuously emitted or intermittently emitted with a period of 0.1 s to 5 s; the scattering angle formed by the light emitted by atomic stimulated radiation passing through the scattering device is 15 degrees.

[0006] According to an embodiment of the present invention, the light emitted by the first light source is the light formed by condensing the light emitted by a light-emitting body through a condenser lens. The center of the light-emitting body is located at the focus of the condenser lens. The light formed by condensing through the condenser lens has a condensed light column area and an uncondensed area.

[0007] According to an embodiment of the present invention, the purification module is used to reduce the number of dust particles in the air; the wall surface irradiated by the light emitted by atomic stimulated radiation is provided with a diffuse reflection layer, which is composed of high-reflection scattering particles, high-refraction scattering particles and high-thermal-conductivity scattering particles with a whiteness greater than 90. The thickness of the diffuse reflection layer is 30 - 100 μm, and the reflectivity of the diffuse reflection layer is higher than 90%.

[0008] According to an embodiment of the present invention, a damper device is provided at the air outlet of the air duct. The damper device is used to open or close the air outlet of the air duct. The damper device includes guide vanes and a guide vane driving member. The guide vanes are made of light-impermeable material and are connected to the driving end of the guide vane driving member. The guide vane driving member is used to drive the guide vanes to rotate to open or close the air outlet.

[0009] According to an embodiment of the present invention, the purification device with a light source has an on state and an off state. In the on state, the guide vane driving member drives the guide vanes to rotate and open the air outlet; in the off state, the first light source is turned off, and the guide vane driving member drives the guide vanes to rotate and close the air outlet.

[0010] According to an embodiment of the present invention, the visual light channel includes a transparent member provided on the housing. The transparent member faces the irradiation path of the first light source, and neither the first light source nor the reflected light emitted therefrom can directly exit through the transparent member; or the visual light channel includes a through hole provided on the housing. The through hole faces the irradiation path of the first light source, and neither the first light source nor the reflected light emitted therefrom can directly exit through the through hole.

[0011] A purifier includes the above purification device with a light source, and is characterized in that it further includes a fan. An air inlet and an air outlet are provided on the housing. The purification module is aligned with the air inlet, and the air duct is communicated with the air outlet. When the purification device with a light source is in the on state, the fan starts, so that indoor air enters the purification module from the air inlet, the air purified by the purification module enters the air duct, and then is discharged from the air duct to the air outlet.

[0012] According to an embodiment of the present invention, it further includes a dust particle counter. The dust particle counter is provided at the air inlet and is used to detect the number of dust particles contained in the air that has not been purified by the purification module.

[0013] According to an embodiment of the present invention, it further includes a second light source. The second light source is provided inside the housing and at the air inlet of the housing. The second light source is used to detect the dust particles of the air entering the purification module or the environmental dust particles.

[0014] Compared with the prior art, in the purification device with a light source of the present invention, a first light source for irradiating the air duct cavity is provided in the air duct downstream of the purification module, an opaque wall surface is provided at the projection of the first light source, and a visual light channel for observing the first light source irradiating the air duct cavity from the outside of the housing is provided on the housing. By irradiating the air flow with the first light source, within the wind speed range, users can see relatively clear dust particles through the visual light channel, thereby realizing the perception of the quality of the treated air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a purifier with a purification device with a light source;

[0016] Figure 2 Cross-sectional view of a purifier with a purification device having a light source;

[0017] Figure 3 Partial cross-sectional view of a top view of a purifier with a purification device having a light source;

[0018] Figure 4 Cross-sectional view of a purifier with a purification device having a light source in another direction;

[0019] In the figure: housing 1, air duct 11, air inlet 12, air outlet 13, lens 14, purification module 2, first light source 3, air valve device 4, fan 5, motor 51, impeller 52, second light source 6

[0020] The realization and advantages of the functions of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0021] The following will disclose multiple embodiments of the present invention in the form of diagrams. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the diagrams, some well-known and commonly used structures and components will be shown in a simple schematic manner in the diagrams.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0023] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] To further understand the content, features, and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0025] Embodiment 1:

[0026] When the purification device purifies air, the air enters the purification module 2 of the purification device. After dust removal and removal of harmful substances in the purification module 2, it enters the air duct 11 in the housing 1 of the purification device from the purification module 2, and then is discharged from the air duct 11. The process of air purification in the purification module 2 is an invisible process, so the user cannot intuitively feel the effect of air purification. Moreover, after the purification module 2 is used for a period of time, the purification function will deteriorate. If the user does not process the purification module 2 in time, it will affect the indoor air quality. Among them, the downstream air duct includes the space where the air treated by the purification module is discharged under the condition of air flow, at least including the space around the air outlet. The purification device with a light source in this embodiment is to provide a purification device with an intuitive and visible purification effect. When the air purified by the purification module 2 is discharged, the user can intuitively see the purification effect. And when the purification function of the purification device deteriorates, the user can also judge by observing the amount of dust in the air discharged from the purification module 2, enabling the user to process the purification module 2 in time without affecting the indoor air quality.

[0027] Please refer to Figure 1 and Figure 2 , in this embodiment, the purification device with a light source includes a housing 1, an air duct 11 and a purification module 2. The air duct 11 and the purification module 2 are arranged in the housing 1. Indoor air first enters the purification module 2, and the air purified by the purification module 2 enters the air duct 11, and then is discharged into the room through the air duct 11. In order to make the purification effect of the purification module 2 on the air intuitive and visible, a first light source 3 for irradiating the air duct cavity is arranged in the air duct 11 downstream of the purification module 2. The projection of the first light source 3 is an opaque wall surface, and the housing 1 is provided with a visual light channel for observing the first light source 3 irradiating the air duct cavity from the outside of the housing 1.

[0028] That is to say, the air purified by the purification module 2 enters the air duct 11 and flows along the air duct 11. In the air flow direction, the part where the air just enters the air duct 11 is called the upstream of the air duct 11, and the part where the air will be discharged from the air duct 11 is the downstream of the air duct 11. A first light source 3 is provided at the part where the air will be discharged from the air duct 11 or at the air outlet of the air duct 11. When the first light source 3 is activated, the light emitted by the first light source 3 projects onto the light-impermeable wall surface. At this time, through the visual light channel, the light emitted by the first light source 3 can be seen. At the same time, because the light emitted by the first light source 3 has a relatively high brightness, when the air flow passes through the light emitted by the first light source 3, the dust in the air flow can be seen. By irradiating the air flow with the first light source 3, within the wind speed range, the user can see relatively clear dust particles, so as to realize the perception of the air quality processed by the purification module 2. If the purification effect of the purification module 2 on the air is relatively good, the user can see less dust floating in the air flow through the visual light channel. If the purification effect of the purification module 2 on the air is not good, or there is a problem with the purification function of the purification module 2, at this time, the user can see a lot of dust floating in the air flow through the visual light channel. The number of dust particles seen by the user through the visual light channel can be used as a basis for judging the purification effect of the purification module 2 on the air, making the purification effect of the purification module 2 on the air visually observable. And when there is a malfunction in the function of the purification module 2 or its service life expires, the user can also timely discover the problem according to the number of dust particles in the air purified by the purification module 2 and make corresponding treatment for the purification module 2.

[0029] It can be understood that the wall surface irradiated by the first light source 3 can be a part of the housing 1 opposite to the first light source 3, or can be an independent wall surface provided inside the housing 1. In order to prevent the light of the first light source 3 from passing through, when the wall surface irradiated by the first light source 3 is a part of the housing 1 opposite to the first light source 3, the housing 1 needs to be made of a light-impermeable material, so that the light emitted by the first light source 3 will not pass through the housing 1; if the wall surface irradiated by the first light source 3 is an independent wall surface provided inside the housing 1, the wall surface inside the housing 1 irradiated by the first light source 3 needs to be made of a light-impermeable material, and the reflected light of the light source and its reflection irradiation area cannot pass through this wall surface.

[0030] Please review Figures 1 to 3, to prevent the light emitted by the first light source 3 from hurting the user's eyes when the user observes the air purification effect, and to make it easier for the user to observe the dust in the air flow, the light-emitting surface of the first light source 3 forms a 90-degree angle with the air outlet direction. That is to say, when the air outlet direction is vertically upward, the light-emitting surface of the first light source 3 is horizontally arranged. When the first light source 3 emits light, the air flow vertically passes through the light emitted by the first light source 3. At this time, when the user observes the direction of the air flow, the user's line of sight is opposite to the air flow direction, and the light emitted by the first light source 3 cannot enter the user's eyes. At the same time, the user can also observe the dust in the air flow when the air flow passes through the light emitted by the first light source 3.

[0031] Please review Figure 3 , to further ensure that the user can clearly see the dust in the air flow, the light emitted by the first light source 3 should have sufficient coverage. In this embodiment, the light emitted by the first light source 3 is irradiated in a fan-shaped surface. In this way, when the air flows, a large amount of air will pass through the light emitted by the first light source 3, making it easier for the user to observe the dust in the air flow.

[0032] To ensure that the light emitted by the first light source 3 has sufficient brightness and at the same time the first light source 3 is also safe, in this embodiment, the light emitted by the first light source 3 is the light emitted by atomic stimulated emission. The power of the light emitted by atomic stimulated emission is 0.1 mW to 5 mW, and the wavelength is 300 - 700 nm. The light emitted by atomic stimulated emission is continuously emitted or emitted at intervals with a period of 0.1 s to 5 s; the scattering angle formed by the light emitted by atomic stimulated emission passing through the scattering device is 15 degrees.

[0033] It can be understood that the power of the light emitted by atomic stimulated emission determines the brightness of the light. The greater the power, the greater the brightness of the light emitted by atomic stimulated emission. When the air flow passes through the light emitted by the first light source 3, the dust is easier to be observed by the user, and at the same time, the energy consumption of the first light source 3 is greater. In actual use, the power of the light emitted by atomic stimulated emission can be determined according to the actual situation, as long as it is ensured that the brightness of the light emitted by the first light source 3 allows the user to clearly see the dust in the air through the visual light channel and at the same time ensure the safety of the first light source 3.

[0034] In this embodiment, in order to ensure that when the first light source 3 irradiates the wall surface and the user observes the air flow in the air duct cavity through the optical channel, the dust in the air flow can be clearly seen, the power of the light emitted by the stimulated emission of atoms is from 0.1 mW to 5 mW. Optionally, the power of the light emitted by the stimulated emission of atoms can be from 0.1 mW to 1 mW, 1 mW, from 1 mW to 2 mW, 2 mW, from 2 mW to 3 mW, 3 mW, or from 3 mW to 5 mW. When the power of the light emitted by the stimulated emission of atoms is from 0.1 mW to 1 mW, 1 mW, from 1 mW to 2 mW, and 2 mW, the power of the light emitted by the stimulated emission of atoms is relatively small. When the air flow passes through the light emitted by the first light source 3, the light emitted by the first light source 3 not only has a brightness that allows the user to clearly observe the dust in the air, but also has low energy consumption and high safety. When the power of the light emitted by the stimulated emission of atoms is from 2 mW to 3 mW, 3 mW, or from 3 mW to 5 mW, the power of the light emitted by the stimulated emission of atoms is relatively large, and the brightness of the light is correspondingly relatively large. The greater the brightness of the light, the easier it is for the user to observe the dust when the air flow passes through the light emitted by the first light source 3, and the user can more easily observe the dust in the air clearly. Moreover, the light with a power less than 5 mW still has a relatively high safety performance.

[0035] The light emitted by the stimulated emission of atoms can be emitted at a high frequency or continuously. Its purpose is to enable the user to observe the situation of the dust in the air flow when the light is emitted. In this embodiment, when the light emitted by the stimulated emission of atoms is continuously emitted, the trajectory of the light emitted by the stimulated emission of atoms is clearly visible. When the user observes the air in the air duct cavity through the optical channel, not only can the dust in the air be seen, but also the trajectory of the light can be seen. At the same time, the light emitted by the stimulated emission of atoms is relatively thin, and the scattering angle formed by the light passing through the scattering device is 15 degrees, which can make the light thicker. This can not only enable the user to observe the emission trajectory of the light, but also enable the user to more clearly see the dust in the air flow.

[0036] In other embodiments, the light emitted by the first light source 3 is the light emitted by the stimulated emission of atoms, and the light emitted by the stimulated emission of atoms adopts an intermittent emission mode with an interval of 0.1 s to 5 s. Intermittent emission can enable the dust in the air to be irradiated multiple times when passing through the propagation path of the light emitted by the first light source 3 along with the air flow, and the dust seen by the user is relatively clear.

[0037] It can be understood that when the light emitted by atomic stimulated emission is emitted at intervals, as long as the emission frequency of the light is high enough, the trajectory of the light is also visible. When the user observes the air in the air duct cavity through the visual light channel, the dust situation in the air flow can still be seen. Optionally, the emission frequencies of the light emitted by atomic stimulated emission are 0.1 s, from 0.1 s to 0.3 s, 0.3 s, from 0.3 s to 3 s, 3 s, and from 3 s to 5 s. When the emission frequencies of the light emitted by atomic stimulated emission are 0.1 s and from 0.1 s to 0.3 s, the emission frequency of the light is relatively high. At this time, the trajectory of the light is the same as that of the light emitted by atomic stimulated emission in a continuous emission manner, and the trajectory is clearly visible. When the user observes the air in the air duct cavity through the visual light channel, not only can the dust in the air be seen, but also the trajectory of the light can be seen; especially when the interval emission frequency of the light emitted by atomic stimulated emission is between 0.3 s and 3 s, the first light source 3 emits light at a high frequency, and the dust in the air can be reflected multiple times. The effect of the user observing the dust in the air through the visual light channel with the difference in light is better than the effect of the light emitted by the first light source 3 when the light is emitted by atomic stimulated continuous emission and shines on the dust; when the interval emission frequency of the light emitted by atomic stimulated emission is 3 s and from 3 s to 5 s, the frequency of the light emitted by the first light source 3 can still ensure that the dust in the air can be seen when the user observes the air in the air duct cavity through the visual light channel.

[0038] In this embodiment, a diffuse reflection layer is provided on the wall surface irradiated by the light emitted by atomic stimulated emission. The diffuse reflection layer is composed of high-reflection scattering particles, high-refraction scattering particles, and high-thermal-conductivity scattering particles with a whiteness greater than 90. The thickness of the diffuse reflection layer is 30 - 100 μm, and the reflectivity of the diffuse reflection layer is higher than 90%. A diffuse reflection layer is provided on the wall surface irradiated by the first light source 3. The high-reflection scattering particles, high-refraction scattering particles, and high-thermal-conductivity scattering particles that make up the diffuse reflection layer increase the roughness of the wall surface. When the light emitted by the first light source 3 hits the diffuse reflection layer on the wall surface, due to the rough surface of the diffuse reflection layer on the wall surface, the diffuse reflection layer will reflect the light in all directions. Therefore, after the first light source 3 passes through the diffuse reflection layer, the reflected light is reflected randomly in different directions, which can dissipate the energy of the light emitted by atomic stimulated emission and reduce light pollution.

[0039] In other embodiments, a mirror can also be used for the wall surface irradiated by the light emitted by atomic stimulated emission. The mirror has a deflection angle. When the light emitted by atomic stimulated emission hits the mirror, two beams of light are formed, increasing the converging light column area and the light path, so that it is easier to detect the dust situation when the user observes the air in the air duct cavity through the visual light channel.

[0040] In other embodiments, the light emitted by the first light source 3 is the light formed by condensing the light emitted by a light-emitting body through a condenser lens. The center of the light-emitting body is located at the focal point of the condenser lens. The light formed after being condensed by the condenser lens is divided into a condensed light column area and an uncondensed area. The user can observe the dust condition in the air duct cavity downstream of the air duct 11 through the visual light channel. Since the brightness of the condensed light column area is relatively large, the user can observe the dust condition more clearly. When the user observes the dust condition through the visual light channel, if it is observed that there is less dust in the condensed light column area of the light emitted by the first light source 3, it indicates that the purification module 2 has a better air purification effect. If it is observed that there is more dust in the condensed light column area of the light emitted by the first light source 3, it indicates that the purification effect of the purification module 2 on the air is relatively poor, and it is necessary to replace the filter screen of the purification module 2 or clean the dust collection plate of the purification module 2. It can be understood that the light-emitting body can be a light-emitting body such as an LED point light source that can emit parallel light beams. Since the condenser lens has a strong light-condensing ability, after the light beam emitted by the light-emitting body is condensed by the condenser lens, the brightness of the light emitted by the light-emitting body is enhanced, and it is easier to detect the dust situation when the user observes the air in the air duct cavity through the visual light channel.

[0041] In this embodiment, the purification module 2 is used to reduce the number of dust particles in the air. The purification module 2 can filter the dust in the air by using a filter screen. A HEPA filter screen (high-efficiency air filter) is installed inside the purification module 2. The filtration accuracy of the HEPA filter screen is at the micron level. When the purification device with a light source is working, air can pass through the gaps of the HEPA filter screen, but the tiny particulate matter in the air will be intercepted. For particles with a diameter of less than 0.3 microns, the filtration efficiency of the HEPA filter screen can exceed 99.97%. However, the HEPA filter screen needs to be replaced regularly. If it is in a period of high haze or the usage frequency is relatively high, the replacement frequency of the HEPA filter screen is also relatively high. In other embodiments, the purification module 2 can also use electrostatic precipitation to reduce the number of dust particles in the air. Electrostatic precipitation is to charge the inside and form an electric field between the positive and negative electrodes through the principle of positive and negative attraction. Then, a large number of electrons and ions in the electric field are used to adsorb some particulate matter inside the purification module 2. When the purification module 2 uses electrostatic precipitation to purify the air, no filter screen is required. The user only needs to wipe the dust collection plate that generates the electric field clean after using it for a period of time and then can continue to use it.

[0042] Therefore, for the air purification device with the first light source 3 in this embodiment, no matter which dust removal method the purification module 2 uses to purify the air, when the user turns on the air purification device with the first light source 3 in this embodiment, the user only needs to observe the condition of the air in the air duct 11 when passing through the light emitted by the first light source 3 through the visual light channel, and check the number of dust particles in the air flow to determine the cleaning situation of the purification module 2 for the dust particles in the air. When the user observes the dust situation through the visual light channel and observes that there are a large number of dust particles floating in the air flow when passing through the light emitted by the first light source 3, it indicates that the purification effect of the purification module 2 on the air is poor, and it is necessary to replace the filter screen of the purification module 2 or clean the dust collection plate of the purification module 2.

[0043] During the long-term use of the purification device, since the air outlet of the air duct 11 is provided at the top of the housing 1, without a covering, when the purification device is in a non-working state, not only is it easy for dust to adhere to the air outlet of the air duct 11, but also dust is likely to enter the interior of the housing 1 through the air outlet of the air duct 11, affecting the performance of the purification device and reducing the service life of the purification device. Please review Figure 2 In this embodiment, a wind valve device 4 is provided at the air outlet of the air duct 11. The wind valve device 4 is used to open or close the air outlet of the air duct 11. The wind valve device 4 includes guide vanes and a guide vane driving member. The guide vanes are made of a light-impermeable material and are connected to the driving end of the guide vane driving member. The guide vane driving member is used to drive the guide vanes to rotate to open or close the air outlet. When the purification device is working, the guide vane driving member drives the guide vanes to rotate, so that the guide vanes open the air outlet of the air duct 11, and the air purified by the purification module 2 flows along the air duct 11 and is discharged through the air outlet of the air duct 11. When the purification device with a light source is in a non-working state, the guide vane driving member drives the guide vanes to rotate, so that the guide vanes close the air outlet of the air duct 11, and the dust in the air cannot adhere to the air outlet of the air duct 11, nor can it enter the interior of the housing 1 through the air outlet of the air duct 11.

[0044] In this embodiment, the purification device with a light source has an on state and an off state. In the on state, the guide vane driving member drives the guide vane to rotate and open the air outlet, and the air duct cavity irradiated by the first light source 3 can be observed along the air passage on one side of the guide vane; in the off state, the first light source 3 is turned off, and the guide vane driving member drives the guide vane to rotate and close the air outlet. That is to say, when the purification device with a light source in this embodiment starts to work, the first light source 3 can be turned on or off according to the user's needs. When the user needs to observe the air purification effect of the purification module 2, the user can turn on the first light source 3 during the startup process by himself, and then observe the air condition purified by the purification module 2 through the visual light channel to determine the purification effect of the purification module 2, or determine whether the filter screen of the purification module 2 needs to be replaced or whether the dust collection plate needs to be cleaned. After observing the purification effect, the user has the freedom to choose to continue to turn on the first light source 3 or turn off the first light source 3. When the purification device with a light source in this embodiment is shut down by the user, the guide vane driving member drives the guide vane to rotate so that the guide vane closes the air outlet of the air duct 11, and if the first light source 3 is in the on state, the first light source 3 will also be automatically turned off when shutting down, which can make the operation convenient and avoid the user forgetting to turn off the first light source 3.

[0045] In this embodiment, the visual light channel includes a transparent member provided on the housing 1. The transparent member faces the irradiation path of the first light source 3, and neither the first light source 3 nor the reflected light emitted therefrom can directly exit from the transparent member. That is to say, the transparent member is not on the propagation path of the light emitted by the first light source 3, nor on the propagation path of the light after diffuse reflection of the light emitted by the first light source 3. In this way, when the user looks into the air duct 11 through the transparent member, the condition of the dust in the air flow passing through the light emitted by the first light source 3 can be seen. And because neither the first light source 3 nor the reflected light emitted therefrom can directly exit from the transparent member, when the user observes the air condition processed by the purification module 2, neither the first light source 3 nor the reflected light emitted therefrom can enter the human eye, which can prevent the user's eyes from being stabbed when observing the air condition processed by the purification module 2.

[0046] In other embodiments, the visual light channel includes a through hole provided on the housing 1. The through hole faces the irradiation path of the first light source 3, and neither the first light source 3 nor the reflected light emitted therefrom can directly exit from the through hole. That is to say, the through hole is not on the propagation path of the light emitted by the first light source 3, nor on the propagation path of the light after diffuse reflection of the light emitted by the first light source 3. In this way, when the user looks into the air duct 11 through the through hole, the condition of the dust in the air flow passing through the light emitted by the first light source 3 can be seen. And because neither the first light source 3 nor the reflected light emitted therefrom can directly exit from the through hole, when the user observes the air condition processed by the purification module 2, neither the first light source 3 nor the reflected light emitted therefrom can enter the human eye, which can prevent the user's eyes from being stabbed when observing the air condition processed by the purification module 2.

[0047] That is to say, whether a transparent member is provided in the direction of the irradiation path of the first light source 3 on the housing 1 or a through hole is provided in the direction of the irradiation path of the first light source 3 on the housing 1 for the optical viewing channel, the purpose is to facilitate the user to observe the dust condition in the air when the first light source 3 irradiates the air duct cavity, and during the observation process, the user's eyes will not be stabbed by the first light source 3 and the reflected light emitted by it.

[0048] In the purification device with a light source of this embodiment, a first light source 3 for irradiating the air duct cavity is provided in the air duct 11 downstream of the purification module 2. When the air purified by the purification module 2 passes through the propagation path of the light emitted by the first light source 3, the dust reflects the light and is seen by the user observing the air duct cavity through the optical viewing channel. The user can intuitively perceive the air purification effect of the purification module 2 according to the dust condition, and the user can also determine the purification function of the purification module 2 according to the seen dust situation.

[0049] Embodiment 2:

[0050] The present invention also provides a purifier, which includes the purification device with a light source of Embodiment 1. Please review Figure 1 and Figure 2 , the purifier further includes a fan 5. An air inlet 12 and an air outlet 13 are provided on the housing 1. The purification module 2 is aligned with the air inlet 12, and the air duct 11 is communicated with the air outlet 13. When the purification device with a light source is in an on state, the fan 5 is started so that indoor air enters the purification module 2 from the air inlet 12. The air purified by the purification module 2 enters the air duct 11 and then flows from the air duct 11 to the air outlet 13. Specifically in application, the fan 5 includes a motor 51 and an impeller 52. The motor 51 drives the impeller 52 to rotate, so that indoor air enters the purification module 2 for purification and then is discharged from the air duct 11.

[0051] That is to say, when the purifier works, the fan 5 is started. The fan 5 sucks the indoor air from the air inlet 12 and makes the air enter the purification module 2. The air is purified during the process of passing through the purification module 2, then enters the air duct 11 from the purification module 2, then flows along the air duct 11 and flows from the air outlet of the air duct 11 to the air outlet 13, and finally is discharged from the air outlet 13. It can be understood that the air inlet 12 is an air inlet net provided on at least one side of the housing 1. The air inlet net can increase the air inlet area, improve the purification speed, and it can be known that the air entering the housing 1 from the air inlet net can only pass through the purification module 2 and then can enter the air duct 11, which can ensure that all the air discharged from the air outlet 13 is the air purified by the purification module 2 and guarantee the purification effect of the purifier.

[0052] The purification module 2 can be in the shape of a flat plate located on one side inside the housing 1 and aligned with the air inlet grille. Such a purification module 2 requires a dedicated installation cavity for installing the purification module 2 inside the housing 1. The air inlet grille forms one of the walls of the installation cavity, and the air duct 11 is connected to the installation cavity on the side of the purification module 2 close to the air duct 11. The air inlet grille is connected to the installation cavity on the side of the purification module 2 close to the air inlet 12. The air inlet 12 and the air duct 11 cannot be directly connected. In this way, the air entering the installation cavity on the side of the purification module 2 close to the air inlet 12 from the air inlet 12 can only enter the installation cavity on the side of the purification module 2 close to the air duct 11 after passing through the purification module 2, and then enter the air duct 11. The fan 5 can be located in the installation cavity on the side of the purification module 2 close to the air inlet 12 or in the installation cavity on the side of the purification module 2 close to the air duct 11. When the fan 5 is started, the indoor air enters the installation cavity on the side of the purification module 2 close to the air inlet 12 through the air inlet 12, then passes through the purification module 2 and enters the air duct 11, flows along the air duct 11 and is finally discharged from the air outlet 13.

[0053] The purification module 2 can also be in the shape of surrounding the inner wall of the housing 1. In this case, at least one side of the housing 1 is provided with an air inlet 12. The air entering the housing 1 from the air inlet 12 can only enter the air duct 11 after passing through the purification module 2. In this situation, the fan 5 is located in the air duct cavity and surrounded by the purification module 2. The air inlet of the fan 5 faces the air inlet 12 on the housing 1. When the fan 5 is started, the indoor air enters the purification module 2 from the air inlet 12 on the housing 1, is purified by the purification module 2 and then enters the air duct 11, and then flows along the air duct 11 and is finally discharged from the air outlet 13.

[0054] The first light source 3 can allow users to see the air condition after being purified by the purification module 2. However, after the purifier has worked for a period of time, if the indoor air already meets the standards, the purifier can be turned off at this time. In order to better let users understand the indoor air condition, in this embodiment, the purifier further includes a second light source 6. The second light source 6 is arranged inside the housing 1 and at the air inlet 12 of the housing 1. The second light source 6 is used to detect the dust particles in the air entering the purification module 2 or the environmental dust particles. Before the indoor air is purified by the purification module 2, users can see the condition of the dust particles in the air entering the purification module 2 or the environmental dust particles through the second light source 6, which can allow users to judge whether it is necessary to turn on the purifier. Or after purification for a period of time, users can judge whether it is necessary to turn off the purifier according to the dust particle situation in the air entering the purification module 2.

[0055] Please refer to Figure 4, in this embodiment, the second light source 6 can be the light emitted by atomic stimulated emission or the light emitted by an LED point source. In actual use, the second light source 6 is arranged on one side of the bottom of the housing 1 close to the air inlet 12. The light emitted by the second light source 6 irradiates out in a fan-shaped surface. The irradiation direction of the light emitted by the second light source 6 is perpendicular to the air inlet direction of the air inlet 12. A lens 14 is provided on the housing 1 facing the irradiation direction of the light emitted by the second light source 6, which is convenient for users to observe the dust situation in the air entering the purification module 2 and is not easy to stab the user's eyes at the same time. Users can observe the dust particles in the air entering the purification module 2 or in the indoor environment through the lens 14. According to the observed situation of the dust particles, the pollution degree of the indoor air can be determined, so as to decide whether to start the purifier or turn off the purifier that has been used for a long time.

[0056] When the purifier purifies the air, when the user observes the dust situation of the air entering the purification module 2 through the lens on the housing 1, only the basic situation of the dust can be observed, and then the indoor air quality is subjectively judged by individuals. Personal judgment is highly subjective. For some users with cleanliness or high requirements for air quality, it is very likely that they still think that the purification effect of the purification module 2 is not good or the indoor air quality is poor even when the air quality meets the standard due to personal subjective judgment. Therefore, in order to more objectively judge the indoor air quality, the purifier in this embodiment further includes a dust particle counter. The dust particle counter is arranged at the air inlet 12 and is used to detect the number of dust particles contained in the air that has not been purified by the purification module 2. Users can determine the pollution degree of the indoor air according to the number of dust particles contained in the air. Judging the air quality through the number of dust particles contained in the air is more objective.

[0057] The dust particle counter can adopt the light scattering type. The particles in the air are scattered under the irradiation of light, converted into electrical pulses through a photoelectric converter, and then converted into the number and size of the particles through an electronic circuit, so that users can intuitively see the number and size of the dust in the untreated air.

[0058] The dust particle counter can also adopt a dust sensor. By using the particle counting principle, it can detect PM2.5 in the air, and can sensitively detect dust with a diameter above 1μm, with high sensitivity and good consistency. By detecting the untreated air through the dust sensor and displaying the detection results, users can make an objective judgment on the indoor air quality. Moreover, by comparing the results displayed by the dust particle counter with the situation of dust particles observed by users through the visual light channel after purification by the purification module 2, users can more clearly understand the purification effect of the purification module 2. In addition, if the dust particle counter shows that there are a large number of dust particles in the untreated air, and after purification by the purification module 2, users still see a large amount of dust through the visual light channel, it means that the purification effect of the purification module 2 on the air is poor, and the filter screen of the purification module 2 needs to be replaced, or the dust collection plate of the purification module 2 needs to be cleaned.

[0059] In addition, the dust particle counter can also display the detection results in the form of colors. At this time, the dust particle counter needs to be connected with an indicator light, and the color of the indicator light changes according to the change in the number of dust particles detected by the dust particle counter. For example, when the air pollution is serious and there are more dust particles in the air, the indicator light shows red. When the number of dust particles in the air begins to decrease, the color of the indicator light begins to change from red to purple. When the number of dust particles in the air reaches the standard, the indicator light shows blue. Through the color change of the indicator light, users can more intuitively understand the quality status of the indoor air. And by understanding the indoor air quality before purification and observing the purified air condition through the visual light channel during the purification process and making a comparison, users can more clearly understand the purification effect of the purification module 2.

[0060] For the purifier of this embodiment, setting the first light source 3 can enable users to more intuitively feel the purification effect of the purifier. Setting the second light source 6 and the dust particle counter can enable users to more intuitively understand the change in air quality before or during the purification of the air by the purifier. And by comparing the number of dust particles at the air outlet of the air duct 11 with the number of dust particles at the air inlet 12, users can better feel the purification effect of the purifier. Moreover, if during the purification process, the number of dust particles at both the air inlet 12 and the air outlet of the air duct 11 is relatively large, it will prompt the user that the filter screen of the purification module 2 needs to be replaced, or the dust collection plate of the purification module 2 needs to be cleaned.

[0061] Embodiment Three:

[0062] The present invention also provides a purification device. The difference between this purification device and the previous embodiments is that in this purification device with a light source, above the air outlet, there is provided... The purifier further includes a fan. The housing is provided with an air inlet and an air outlet. Above the air outlet, there is a first light source that irradiates downward, and the irradiated area at least includes an opaque wall surface, which can be an opaque air duct wall surface, or an opaque grille wall surface, or part of it is an opaque grille wall surface, and part of the light passes through the gaps between the grilles and then irradiates the opaque air duct wall surface. In some embodiments, a concave arc-shaped grille is provided at the irradiated area of the first light source, and a visual light channel that can be observed from the side is formed between the first light source and the arc-shaped grille. This visual light channel is located in the upper part of the housing and is arranged within the area of the air outlet and the arc-shaped grille. When the first light source irradiates the arc-shaped grille, a reflective area that converges towards the center is formed on the arc-shaped grille. The reflective area that converges towards the center formed by the spaced grilles coincides with the irradiation area of the first light source, and the spaced reflected light that converges towards the center and the incident light intersect to form an effect suitable for presenting dust particles.

[0063] In the air duct of this embodiment, a humidifying device is provided, which increases the humidity in the air. The humidifying method adopted can be wet film humidification or ultrasonic humidification; when the humidity of the air increases, it is beneficial for dust particles to adhere, increasing the density of dust particles or forming adsorption between dust particles, thereby significantly improving the effect of presenting dust particles.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, or improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A purifier including a purification device with a light source, comprising a housing, an air duct disposed within the housing, and a purification module, Characterized in that: A first light source for irradiating the air duct cavity is disposed in the air duct downstream of the purification module. The projection of the first light source is an opaque wall surface, and a visual light channel is provided on the housing for observing the first light source irradiating the air duct cavity from the outside of the housing; It further includes a second light source, which is disposed within the housing and at the air inlet of the housing. The second light source is used to detect dust particles in the air entering the purification module or environmental dust particles; The opaque wall surface is a concave arc-shaped grille. When the first light source irradiates the arc-shaped grille, a reflective area converging towards the center is formed on the arc-shaped grille. The center-converging reflective areas formed by the spaced grilles coincide with the irradiation area of the first light source, and the center-converging spaced reflected light intersects with the incident light to form an effect suitable for presenting dust particles.

2. The purifier according to claim 1, Characterized in that, The light emitted by the first light source is light emitted by atomic stimulated emission, and the power of the light emitted by atomic stimulated emission is 0.1 mW to 5 mW; The wavelength of the light emitted by atomic stimulated emission is 300 - 700 nm; The light emitted by atomic stimulated emission is continuously emitted or intermittently emitted with a period of 0.1 s to 5 s; The scattering angle formed by the light emitted by atomic stimulated emission passing through the scattering device is 15 degrees.

3. The purifier according to claim 1, Characterized in that, The light emitted by the first light source is light formed by condensing the light emitted by a light-emitting body through a condenser lens. The center of the light-emitting body is located at the focal point of the condenser lens, and the light formed by condensing through the condenser lens has a condensed light column area and an uncondensed area.

4. The purifier according to claim 2, Characterized in that, The purification module is used to reduce the number of dust particles in the air; a diffuse reflection layer is provided on the wall surface irradiated by the light emitted by atomic stimulated emission. The diffuse reflection layer is composed of high-reflection scattering particles, high-refraction scattering particles, and high-thermal-conductivity scattering particles with a whiteness greater than 90. The thickness of the diffuse reflection layer is 30 - 100 μm, and the reflectivity of the diffuse reflection layer is higher than 90%.

5. The purifier according to any one of claims 1 to 4, Characterized in that, An air valve device is provided at the air outlet of the air duct. The air valve device is used to open or close the air outlet of the air duct. The air valve device includes guide vanes and a guide vane driving member. The guide vanes are made of opaque material and are connected to the driving end of the guide vane driving member. The guide vane driving member is used to drive the guide vanes to rotate to open or close the air outlet.

6. The purifier according to claim 5, Characterized in that, The purification device with a light source has an open state and a closed state. In the open state, the guide vane driving member drives the guide vanes to rotate and open the air outlet; in the closed state, the first light source is turned off, and the guide vane driving member drives the guide vanes to rotate and close the air outlet.

7. The purifier according to any one of claims 1 to 4, Characterized in that, The optometry channel includes a transparent member provided on the housing, the transparent member facing the first light source irradiation path, and neither the first light source nor the reflected light emitted therefrom can directly exit from the transparent member; or the optometry channel includes a through hole provided on the housing, the through hole facing the first light source irradiation path, and neither the first light source nor the reflected light emitted therefrom can directly exit from the through hole.

8. The purifier according to any one of claims 1 to 4 and 6, characterized in that it further includes a blower. An air inlet and an air outlet are provided on the housing. The purification module is aligned with the air inlet, and the air duct is communicated with the air outlet. When the purification device with a light source is in an on state, the blower is started so that indoor air enters the purification module from the air inlet, the air purified by the purification module enters the air duct, and then is discharged from the air duct to the air outlet.

9. The purifier according to claim 8, characterized in that it further includes a dust particle counter. The dust particle counter is provided at the air inlet for detecting the number of dust particles contained in the air that has not been purified by the purification module; a humidifying device is further provided in the air duct downstream thereof.

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