Air purification type lamp

Abstract

The utility model relates to the field of air purification, in particular to an air purification type lamp which comprises a shell body and a light-transmitting lampshade, the shell body comprises a bottom face and side faces, the light-transmitting lampshade is fixedly arranged on the upper side of the shell body, the shell body and the light-transmitting lampshade form a closed space, and a supporting part is fixedly arranged on the bottom face; a lighting source is fixedly arranged at the top end of the supporting part, the light-emitting face of the lighting source faces the light-transmitting lampshade, a catalytic light source is fixedly arranged on the outer wall of the supporting part, a photocatalytic layer is fixedly arranged on the inner wall of the shell body, and a through air inlet and a through air outlet are formed in the bottom face of the shell body and are formed in the outer side area of the supporting part. The fan is fixedly arranged on the inner wall of the shell body, corresponds to the air inlet in position and is a blowing fan, and an air outlet of the blowing fan is close to one side of the side face. According to the air blowing fan, the flow speed of air near the photocatalytic layer is increased, purified air is easy to desorb, and the air purification efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of air purification, and in particular, to an air purification lamp. Background Art

[0002] Formaldehyde, benzene, volatile organic compounds (VOCs), etc. are widely present. They come from decoration materials, furniture, etc., and seriously threaten human health. Long-term exposure can cause respiratory diseases, skin allergies, and even affect the health of the nervous system and reproductive system. In application scenarios such as offices, homes, and hospitals, good air quality is essential; if lighting fixtures can also purify organic pollutants, it will effectively improve the quality of the indoor environment. Therefore, lamps are required to have good photocatalytic properties.

[0003] Existing lamps with photocatalytic functions are divided into two categories. One category is to directly use the lighting source for photocatalysis, and the photocatalytic particles are materials that can achieve photocatalysis in the visible light band; the utility model patent named "an integral photocatalytic lamp for air purification" and the authorization announcement number "CN 206540075 U" discloses an integral photocatalytic lamp, including a lamp holder, a lampshade, and a lamp body. The lamp body is arranged in the middle of the lampshade, and the material of the lampshade panel is a visible light type photocatalytic material. The light emitted by the lamp body is irradiated on the visible light type photocatalytic material to produce a photocatalytic effect. Although the lamp structure is simple and only visible light type photocatalytic materials are needed, the photocatalytic efficiency of the photocatalytic particles in the visible light band is low; because the energy of visible light is relatively low, a more efficient photocatalyst is generally required to achieve the same catalytic effect as the ultraviolet light band.

[0004] The other type is to set up ultraviolet light sources specifically for photocatalytic particles, and use ultraviolet band photocatalytic particles with high photocatalytic efficiency. The utility model patent named "An indoor air purification lamp based on TiO2 photocatalytic function" and the authorization announcement number "CN203656879 U" discloses an air purification lamp, which adds an air purification box above the traditional ceiling lamp. The air purification box is a box-shaped structure with air-permeable and light-transmitting holes on the side wall, and is equipped with ultraviolet lamp tubes, composite paper-based photocatalytic paper and composite paper-based photocatalytic paper brackets. The air purification lamp has a large volume and a complex structure. From the perspective of photocatalysis, gas exchange is achieved through the air-permeable and light-transmitting holes on the side wall of the air purification box, and the interior of the air purification box is relatively closed, and the air flowability is poor, so that the photocatalytic particles are very easy to adsorb organic pollutants in the air, thereby fully photocatalytic; however, due to the low air flow rate, the clean air after photocatalysis is not easy to desorb, so that other organic pollutants in the air cannot be purified, reducing the overall air purification efficiency of the device.

[0005] In summary, due to the relatively low fluidity of air, it is difficult for the purified air to desorb, resulting in a low purification efficiency of existing air purification lamps. Summary of the Invention

[0006] The purpose of the present utility model is to provide an air purification lamp for the deficiencies in the above-mentioned existing technologies, so as to solve the problem that due to the relatively low fluidity of air, it is difficult for the purified air to desorb, resulting in a low purification efficiency of existing air purification lamps.

[0007] To achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0008] The present application provides an air purification lamp, which includes a housing body and a light-transmitting lamp cover. The housing body includes a bottom surface and a side surface. The light-transmitting lamp cover is fixedly arranged on the upper side of the housing body. The housing body and the light-transmitting lamp cover form a closed space. Inside the housing body, there are arranged a lighting source, a catalytic light source, a photocatalytic layer, and a fan. A support part is fixedly arranged on the bottom surface. The top end of the support part fixedly arranges the lighting source, and the light-emitting surface of the lighting source faces the light-transmitting lamp cover. The outer wall of the support part fixedly arranges the catalytic light source. The photocatalytic layer is fixedly arranged on the inner wall of the housing body. The bottom surface is provided with a through air inlet and an air outlet, and the air inlet and the air outlet are arranged in the outer area of the support part. The fan is fixedly arranged on the inner wall of the housing body, and the fan corresponds to the position of the air inlet. The fan is a blowing fan, and the air outlet of the blowing fan is close to the side surface.

[0009] Preferably, the distance between the air outlet and the side surface is less than 1 cm, and the air outlet faces away from the side of the air outlet.

[0010] More preferably, the distances between the air inlet and the side surface and between the air outlet and the side surface are equal, and the distance between the air inlet and the air outlet is less than 1.5 cm.

[0011] More preferably, a reflector is also fixedly arranged inside the housing body. One end of the reflector is fixedly arranged at the end of the support part away from the bottom surface, and the other end of the reflector is fixedly arranged at the end of the side surface away from the bottom surface; the reflector divides the closed space into a photocatalytic channel and a lighting channel.

[0012] More preferably, the distance between the lighting source and the light-transmitting lamp cover is 3 - 5 cm.

[0013] More preferably, the support part is in the shape of a cylindrical surface, and the central axis of the support part coincides with the normal line at the center position of the bottom surface.

[0014] More preferably, the height of the support part is less than the height of the side surface; the diameter of the support part is one-third to two-thirds of the diameter of the side surface.

[0015] More preferably, the bottom surface is a curved surface, convex in a direction away from the light-transmitting lamp cover; the light-transmitting lamp cover is a curved surface, convex in a direction away from the housing body.

[0016] More preferably, a connecting portion is provided on the outer surface of the housing body, and the connecting portion is disposed at the middle position of the bottom surface.

[0017] More preferably, the wavelength of the ultraviolet light emitted by the catalytic light source is 360 - 370 nm; the wavelength of the visible light emitted by the illumination light source is 400 - 760 nm.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: In this application, air enters the blower fan from the air inlet and flows out from the air outlet of the blower fan; the air flow velocity at the air outlet of the blower fan is relatively large, and the air outlet is close to the side surface of the housing body; this enables the kinetic energy of the air with a relatively large wind speed to be relatively large when it contacts the photocatalytic layer provided on the inner side surface, and the purified air molecules are easily desorbed, and other organic pollutants can recombine with the photocatalytic material for purification, increasing the number of organic pollutant molecules purified by the photocatalytic layer within a certain period of time, thereby enhancing the overall photocatalytic effect and having a relatively high air purification efficiency. That is, the blower fan in this application increases the air flow velocity near the photocatalytic layer, making the interaction efficiency between the organic pollutants in the air and the photocatalytic layer higher and improving the air purification efficiency.

[0019] Furthermore, in this application, a reflector is provided to divide the enclosed space into a photocatalytic channel and an illumination channel. The purified air does not enter the illumination channel and only undergoes catalysis in the photocatalytic channel, reducing the air flow space. As a result, the air flow velocity further increases, making it easier for the purified air molecules to desorb. The photocatalytic layer can purify other organic pollutants, thereby further enhancing the purification efficiency. In addition, the reflector has a good reflection effect on ultraviolet light; on the one hand, the ultraviolet light does not shoot out from the transparent lamp cover and cause harm to the human body; on the other hand, it makes the ultraviolet light more evenly distributed in the photocatalytic channel, uniformly irradiating the photocatalytic layer, enhancing the interaction between light and organic pollutants and the photocatalytic material, and further enhancing the photocatalytic effect. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of an air purification type lamp provided by the present utility model;

[0021] Figure 2 It is a schematic diagram of the positional relationship of the air inlet, air outlet, and fan provided on the bottom surface in an air purification type lamp provided by the present utility model (the air inlet is covered by the fan);

[0022] Figure 3 It is the fluid simulation result in the photocatalytic channel of an air purification type lamp provided by the present utility model (three-dimensional, with a scale on the right side of the figure);

[0023] Figure 4 This is the fluid simulation result in the photocatalytic channel of an air purification lamp provided by the utility model (top view, with a ruler on the right side of the figure).

[0024] Icon: 1-housing body; 11-air inlet; 12-air outlet; 2-light-transmitting lampshade; 3-supporting part; 4-illumination light source; 5-catalytic light source; 6-photocatalytic layer; 7-fan; 8-reflector; 9-connecting part. DETAILED DESCRIPTION

[0025] In order to make the implementation process of the utility model clearer, it will be described in detail below with reference to the accompanying drawings.

[0026] The utility model provides an air purification lamp, such as Figure 1 As shown, the lamp of the present application includes a shell body 1, the shell body 1 includes a bottom surface and a side surface, and the upper side is open. The bottom surface of the shell body 1 can be square or circular. Preferably, the shape of the bottom surface is circular, so that it is convenient to be fixedly connected with the circular transparent lampshade 2. The circular transparent lampshade 2 makes the light field intensity in all directions the same and the illumination more uniform. The bottom surface can be a plane or a curved surface. Preferably, the bottom surface is a curved surface, and the bottom surface convexly moves away from the transparent lampshade 2. In this way, there is a gap between the bottom surface and the wall surface, and air can be exchanged from the bottom surface of the shell body 1. The material of the shell body 1 is PVC or stainless steel or resin. The transparent lampshade 2 is fixedly arranged on the upper side of the shell body 1, and can be detachably fixedly connected by a slot or a thread, and a closed space is formed between the shell body 1 and the transparent lampshade 2. Preferably, the transparent lampshade 2 is a curved surface, and the transparent lampshade 2 convexly moves away from the shell body 1. In this way, the light emitted outward has a larger divergence angle and can illuminate a larger space. The material of the light-transmitting lampshade 2 is glass (the inner wall of which may be provided with fluorescent powder) or PC (polycarbonate) or acrylic or resin.

[0027] Inside the housing body 1, there are arranged a lighting source 4, a catalytic light source 5, a photocatalytic layer 6, and a fan 7. Specifically, on the bottom surface of the housing body 1, a support portion 3 is fixedly arranged. At the top of the support portion 3, the lighting source 4 is fixedly arranged, and the light-emitting surface of the lighting source 4 faces the transparent lamp cover 2. The support portion 3 is in a cylindrical shape with a hollow structure. The central axis of the support portion 3 coincides with the normal line at the center position of the bottom surface; its interior provides a placement space for circuit components such as connecting wires and circuit boards. The diameter of the support portion 3 is one-third to two-thirds of the side diameter; in this way, more photocatalytic layers 6 can be arranged on the outside. The height of the support portion 3 is less than the height of the side surface of the housing body 1, and the distance between the lighting source 4 and the transparent lamp cover 2 is 3 - 5 cm; in this way, the divergent light emitted by the lighting source 4 can completely cover the transparent lamp cover 2, so that the light field intensity on the transparent lamp cover 2 is evenly distributed; that is, as the propagation distance increases, the spot size of the light emitted by the lighting source 4 becomes larger and larger. The appropriate distance between the lighting source 4 and the transparent lamp cover 2 can make the spot size when the spot reaches the transparent lamp cover 2 greater than or equal to the cross-sectional area of the transparent lamp cover 2, so that the transparent lamp cover 2 is evenly irradiated, and the intensity of the emitted illumination light is uniform. The light-emitting surface of the lighting source 4 is circular, and the wavelength of the visible light emitted by the lighting source is 400 - 760 nm.

[0028] On the outer wall of the support portion 3, the catalytic light source 5 is fixedly arranged. 3 - 8 ultraviolet lamp beads can be evenly arranged, or a 360° ultraviolet lamp strip can be arranged. The wavelength of the ultraviolet light emitted by the catalytic light source 5 is 360 - 370 nm, and preferably, it can be 365 nm. The light emitted by the catalytic light source 5 irradiates on the photocatalytic layer 6, contacts with organic pollutants, generates a photocatalytic effect, and converts the organic pollutants into carbon dioxide and water. The photocatalytic layer 6 is fixedly arranged on the inner wall of the housing body 1, that is, in the area outside the bottom surface support portion 3 and on the side inner wall. The photocatalytic layer 6 can be a sprayed titanium dioxide thin film, and the thickness of the thin film can be 20 - 500 μm; in this way, the interaction between the photocatalytic layer 6 and air and the light field is stronger, and the photocatalytic efficiency is higher. When it is thinner, the number of photocatalyst particles is less, and the catalytic effect is not good. When it is thicker, the titanium dioxide particles in the inner layer cannot be irradiated by ultraviolet light and do not contribute to photocatalysis. Preferably, the thickness of the photocatalytic layer 6 on the side is greater than the thickness of the photocatalytic layer 6 on the bottom surface. Under the action of the fan, the photocatalytic layer 6 on the side has a stronger interaction with organic pollutants, so the purification efficiency is higher, and the overall air purification efficiency is improved.

[0029] On the bottom surface of the housing body 1, there are arranged a through air inlet 11 and an air outlet 12. The air inlet 11 is used to allow the air to be purified to flow into the lamp, and the air outlet 12 ( Figure 1 not shown in the figure) allows the purified air to flow out. The air inlet 11 and the air outlet 12 are arranged in the outer area of the support portion 3, close to the side surface of the housing body 1, such as Figure 2As shown. The fan 7 is fixedly arranged on the inner wall of the housing body 1, and the fan 7 corresponds to the position of the air inlet 11 ( Figure 2 in which the air inlet 11 is located in the area covered by the fan 7). When the fan 7 rotates, air enters the fan 7 from the air inlet 11 and enters the interior of the lamp through the fan 7. The air inlet 11 and the air outlet 12 can each be composed of a single ventilation hole or can be composed of multiple ventilation holes arranged in a row. The shape of the ventilation holes can be circular or strip-shaped. The direction of the ventilation holes is perpendicular to the bottom surface of the housing body 1, which is convenient for preparation, has a small air resistance, and the air is more likely to flow. The distances from the air inlet 11 and the air outlet 12 to the side are equal, and the distance between the air inlet 11 and the air outlet 12 is less than 1.5 cm; in this way, the entering air is closer to the inner wall of the side of the housing body 1. The fan 7 is a blower fan, a blower fan. The blower fan is composed of components such as a rotor, an impeller, and a bearing. The cooperation between these components is tight and stable. The gaps between the rotor and the rotor and between the rotor and the body are small, and the leakage is small. Therefore, its volumetric efficiency is relatively high. The rotational speed of the blower fan is generally relatively large, and the rotational speed of the blower fan is 5000 - 10000 r / min. As Figure 2 shown, the air outlet of the blower fan is close to one side of the housing body 1 and the air outlet faces away from the air outlet 12, and the distance from the air outlet to the side is less than 1 cm; in this way, on the one hand, the plane where the air inlet and the air outlet of the blower fan are located is perpendicular, and the area of the air outlet is smaller than that of the air inlet. The flow velocity of the air at the air outlet of the blower fan is relatively large, which is 3 - 5 times the air velocity at the air inlet. The relatively large velocity increases the kinetic energy of the organic pollutant molecules in the air, and the purified molecules are easily desorbed, increasing the number of organic pollutant molecules purified by the photocatalytic layer 6 within a certain period of time and improving the overall air purification efficiency; on the other hand, the air outlet is close to the side of the housing body 1 and along the tangential direction, making the air flow velocity closer to the inner wall of the side of the housing body 1 faster and the air flow velocity closer to the side of the middle catalytic light source 5 slower. The photocatalytic layer 6 is arranged on the side inner wall. That is, the setting of the fan 7 increases the air flow velocity on the surface of the side photocatalytic layer 6, so that the purified organic pollutant molecules are easily desorbed from the photocatalytic layer 6. The photocatalytic layer 6 can combine with other organic pollutant molecules and purify them, increasing the number of organic pollutant molecules purified by the photocatalytic layer 6 within a certain period of time and improving the purification effect.

[0030] Furthermore, a reflector 8 is fixedly arranged inside the outer shell body 1. One end of the reflector 8 is fixedly arranged at one end of the support part 3 away from the bottom surface of the outer shell body 1, and the other end of the reflector 8 is fixedly arranged at one end of the side surface of the outer shell body 1 away from the bottom surface. The reflector 8 is arranged in a circle; the reflector 8 divides the closed space into a photocatalytic channel and an illumination channel. A photocatalytic channel is formed between the reflector 8 and the side surface and part of the bottom surface of the outer shell body 1. The catalytic light source 5 irradiates on the photocatalytic layer 6. The photocatalytic layer 6 combines with organic pollutant molecules such as formaldehyde and benzene in the entering air to generate a photocatalytic reaction, converting the organic pollutant molecules into carbon dioxide and water to purify the air. An illumination channel is formed between the reflector 8 and the transparent lamp cover 2. The light emitted by the illumination light source 4 transmits through the transparent lamp cover 2 for illumination. The material of the reflector 8 is aluminum metal, and the thickness of the reflector 8 is 0.5 - 2 mm. Aluminum metal has a high reflectivity to light in the ultraviolet band. The reflector 8 reflects the light emitted by the catalytic light source 5, enabling the ultraviolet light to fully irradiate on the photocatalytic layer 6, thereby improving the photocatalytic efficiency and ultimately enhancing the air purification efficiency; meanwhile, in the illumination channel, the reflector 8 reflects visible light, making the light generated by the illumination light source 4 irradiate on the transparent lamp cover 2 more evenly.

[0031] Furthermore, using Ansys software, the gas flow in the above-mentioned photocatalytic channel is simulated. Specifically, a flow channel model is established and simulated under the standard atmospheric pressure environment. The air inlet speed of the air inlet is set to 0.5 m / s, and the fluid is air, so as to obtain the fluid simulation results as Figure 3 and Figure 4 shown. Figure 3 The different colored arrows in Figure 3 represent different air flow velocities. The darker the color of the arrow, the greater the flow velocity, and the direction of the arrow represents the direction of gas flow. Figure 4 is the three-dimensional result,

[0032] Figure 4 is the top view result of the flow channel; it can be seen that the air flow velocity near the outer side of the flow channel is larger, and the air flow velocity near the inner side is smaller. That is, in the lamp of the present application, the air flow velocity near the photocatalytic layer 6 on the side surface of the outer shell body 1 is faster, and the interaction with the photocatalytic layer 6 is stronger; molecules are easily desorbed from the photocatalytic layer 6, and the air purification effect is better.

[0032] The outer surface of the housing body 1 is provided with a connecting part 9, and the connecting part 9 is arranged at the middle position of the bottom surface; so as to facilitate fixing the lamp on the wall or ceiling. The connecting part 9 can be a component for snap connection, or a component that needs to be fixed on the wall with screws, and there is no specific limitation. When the lighting source 4, the catalytic source 5, and the fan 7 are in use, power supply is required. The specific power supply method is not limited. Just connect the electrical components to the power supply with wires. The power supply can be a storage battery or other power sources; the inside of the support part 3 can be used to collect wires. Small holes can be provided on the side wall of the support part 3 for passing wires, and finally they are drilled out from the bottom of the housing body 1 uniformly to connect to an external power supply. Of course, a wireless power supply method can also be adopted. The specific power supply method is not the core of this application. The inventive point of this application lies in the internal structure of the lamp.

[0033] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An air purifying lamp, comprising a shell body and a light-transmitting lampshade, wherein the shell body comprises a bottom surface and a side surface, the light-transmitting lampshade is fixedly arranged on the upper side of the shell body, the shell body and the light-transmitting lampshade form a closed space, and an illumination light source, a catalytic light source, a photocatalytic layer, and a fan are arranged inside the shell body, characterized in that: A support portion is fixedly arranged on the bottom surface, the top of the support portion is fixedly arranged with the lighting light source, the light-emitting surface of the lighting light source faces the translucent lampshade, the outer wall of the support portion is fixedly arranged with the catalytic light source, the inner wall of the shell body is fixedly arranged with the photocatalytic layer, a penetrating air inlet and air outlet are arranged on the bottom surface, the air inlet and the air outlet are arranged in the outer area of ​​the support portion, the fan is fixedly arranged on the inner wall of the shell body, the fan corresponds to the position of the air inlet, the fan is a blower fan, and the air outlet of the blower fan is close to one of the side surfaces.

2. The air purification lamp according to claim 1, characterized in that: The distance between the air outlet and the side surface is less than 1 cm, and the air outlet faces a side away from the air outlet.

3. The air purification lamp according to claim 2, characterized in that: The air inlet and the air outlet are equidistant from the side surface, and the distance between the air inlet and the air outlet is less than 1.5 cm.

4. The air purification lamp according to claim 3, characterized in that: A reflector is also fixedly arranged inside the shell body, one end of the reflector is fixedly arranged at an end of the support portion away from the bottom surface, and the other end of the reflector is fixedly arranged at an end of the side surface away from the bottom surface; the reflector divides the enclosed space into a photocatalytic channel and a lighting channel.

5. The air purification lamp according to claim 4, characterized in that: The distance between the illumination light source and the light-transmitting lampshade is 3-5 cm.

6. The air purification lamp according to claim 5, characterized in that: The support portion is in a cylindrical shape, and a central axis of the support portion coincides with a normal line at a central position of the bottom surface.

7. The air purification lamp according to claim 6, characterized in that: The height of the support portion is smaller than the height of the side surface; and the diameter of the support portion is one third to two thirds of the diameter of the side surface.

8. The air purification lamp according to claim 7, characterized in that: The bottom surface is a curved surface, and the bottom surface is convex in a direction away from the light-transmitting lampshade; the light-transmitting lampshade is a curved surface, and the light-transmitting lampshade is convex in a direction away from the shell body.

9. The air purification lamp according to claim 1, characterized in that: The outer surface of the shell body is provided with a connecting portion, and the connecting portion is arranged at the middle position of the bottom surface.

10. The air purification lamp according to claim 1, characterized in that: The wavelength of the ultraviolet light emitted by the catalytic light source is 360-370nm; the wavelength of the visible light emitted by the illumination light source is 400-760nm.

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