Indoor deodorizing box

Abstract

An air inlet and an air outlet are formed in the two ends of a box body, an insertion frame is inserted into an opening in the side face of the box body, the insertion frame is inserted between guide frames on the inner wall of the box body, an odor removing filter screen is installed on the insertion frame, odor removing agents are attached to the odor removing filter screen, and an irradiation lamp and a fan device which are electrically connected with a USB interface are installed in the box body. And the irradiation lamp is arranged between the deodorizing filter screens, so that the deodorizing effect of the photocatalyst titanium dioxide is enhanced. The fan device is fixed on the partition plate or the cambered surface body, the fan is fixed in the barrel body, and the air inlet end and the air outlet end of the fan are horn mouths or conical mouths. The device is simple in structure, adopts ultra-low safety voltage, is convenient and safe to use, and is suitable for marketization; the deodorization is thorough, the efficiency is high, and the continuous deodorization time is long.

Description

Technical Field

[0001] The utility model is applied to the field of life and relates to the removal of odor in a room, in particular to a deodorizing box which utilizes photocatalyst titanium dioxide to remove odor in a room. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for indoor air quality, such as humidification and deodorization. For the rooms where the elderly live, even if they clean every day, the old smell in the room is difficult to remove, and the old smell has become an obstacle to communication between the younger and the elders. Especially in nursing homes, when the old smell in the room is serious, the caregivers are reluctant to enter the room.

[0003] There are many patent applications for deodorization. The main methods for removing odors are ventilation, adsorption, covering, etc. Open windows, exhaust fans or other methods to achieve air circulation inside and outside the room, or spray scented chemical reagents to cover the odor, or use activated carbon adsorption to remove odors, such as CN218130922U, an activated carbon adsorption device. Or a combination of methods, such as CN104279636B, an air deodorization, purification and humidification device and method, in addition to using activated carbon, also uses ultraviolet light sterilization to purify the air.

[0004] CN212997646U provides a deodorization system using two-way ventilation, including a blower, a bellows and a deodorant containing device for deodorizing a factory building. The bellows is arranged on the wall of the factory building, and is provided with an air outlet and an air inlet. The deodorant containing device is installed on the bellows, and a leakage hole is arranged at the bottom. The deodorant flows into the bellows through the leakage hole and is blown into the factory building to realize indoor ventilation and deodorization. The deodorant in the deodorization system is wrapped by the fresh air outside the factory building, and has no contact with the odor in the factory building, and does not play the role of removing the odor, but only replaces the fresh air and increases the fragrance.

[0005] CN210673861U discloses a portable formaldehyde removal, sterilization and deodorization device for multiple occasions. The housing is provided with an air inlet and an air outlet, the interior of the housing is provided with an air duct, a light source is provided on the inner wall of the upper cover, a fan is provided on the inner wall near the air outlet, and a photocatalyst device on the inner wall of the lower cover illuminated by the light emitting surface of the light source is used to sterilize the air in the air duct, remove harmful gases such as formaldehyde, and deodorize. The disadvantage of the sterilization and deodorization device is that most of the air flowing in the air duct does not contact the photocatalyst device, and its sterilization and deodorization effect is limited.

[0006] CN219231970U discloses a nano photocatalyst air deodorization device, in which a deodorization box is provided with a suction fan, an exhaust fan and a primary filter screen, and the gas passes through a photocatalyst deodorization filter plate, and is irradiated by an ultraviolet lamp to produce a photocatalytic reaction, and the photocatalyst deodorization filter plate produces a strong catalytic degradation function, which can effectively degrade toxic and harmful gases in the air; it can effectively kill a variety of bacteria, and can decompose and harmlessly treat toxins released by bacteria or fungi, thereby achieving a deodorization effect, and at the same time, it also has the functions of removing formaldehyde, resisting pollution, purifying air, etc., and has a good treatment effect on the air. The gas purified by the photocatalyst deodorization filter plate is then discharged from the deodorization box through the exhaust fan in the air outlet pipe, thereby achieving a circulating deodorization effect on the air. The structure of the moving parts of the deodorization device is relatively complex, which is not conducive to marketization. Moreover, the photocatalyst deodorization filter plate has only one layer, and although it has a deodorization function, the deodorization effect is limited. Utility Model Content

[0007] The technical problem solved by the utility model is to provide an indoor deodorizing box, which uses air circulation to fully contact the air with the multi-layer modified photocatalyst titanium dioxide deodorizing agent, and uses the principle of photocatalysis to degrade the odor, thereby achieving the effect of efficiently removing the odor. The structure of the indoor deodorizing box is simplified, the manufacturing cost is reduced, and it is conducive to marketization.

[0008] The technical solution adopted by the utility model is as follows: the indoor deodorizing box of the utility model comprises a box body, the two ends of the box body are an air inlet and an air outlet, an irradiation lamp, a deodorizing filter and a fan device are installed inside the box body, the mesh of the deodorizing filter is ventilated, and a deodorizing agent is attached to the deodorizing filter. The deodorizing agent is photocatalyst titanium dioxide or modified photocatalyst titanium dioxide, which is attached to the deodorizing filter after being sprayed or soaked and dried. The fan device forces the air to flow in the box body, which helps the air flow in the room and provides favorable conditions for removing odors in the room.

[0009] Preferably, the irradiation lamp is arranged between the deodorizing filters, and the visible light or ultraviolet light emitted by the irradiation lamp strengthens the deodorizing effect of the photocatalyst titanium dioxide or the modified photocatalyst titanium dioxide.

[0010] Preferably, the air inlet and the air outlet are respectively equipped with an air inlet grille and an air outlet grille. The air inlet grille can block light floating objects of larger size in the air, and the air outlet grille is tilted upward to guide the upward air flow, which is beneficial to the air circulation in the room.

[0011] Preferably, the fan device comprises a cylinder and a fan, the fan is fixed in the cylinder to guide the air to flow in the cylinder, and the ventilation area of ​​the cylinder is smaller than the ventilation area of ​​the deodorizing filter. The fan device is fixed on a partition or a curved body on the inner wall of the box. The air inlet and outlet of the fan are both trumpet-shaped or conical, which helps the air flow to produce a Coanda effect.

[0012] Preferably, the box body is square, and the side panel is processed with an opening, and the opening is inserted into the plug-in frame; the deodorizing filter is installed on the plug-in frame. Or the box body is formed by plugging and sealing the filter box section and the fan box section; the fan device is installed in the fan box section, and a row of irradiation lamps and a layer of deodorizing filter are arranged in each filter box section; the inner frame is fixedly installed on the inner wall of the filter box section, and the deodorizing filter is installed on the inner frame. The periphery of the plug-in frame or the inner frame is designed with a groove, and the deodorizing filter is fixed in the groove with a rubber strip.

[0013] Preferably, the irradiation lamp and the fan device are electrically connected via a USB interface with an ultra-low safety voltage, which will not cause leakage or fire accidents, thereby enhancing safety.

[0014] Preferably, the deodorizing filter has no more than five layers, which can ensure the deodorizing effect and avoid excessive wind resistance.

[0015] The utility model has the following beneficial effects: the utility model has a simple structure, low manufacturing cost, and is suitable for marketization; it has a small size, light weight, uses USB ultra-low voltage, and is convenient and safe to use. The deodorizer uses modified photocatalyst titanium dioxide, which can completely deodorize, has high efficiency, and can continuously deodorize for a long time. The deodorizer is safe and environmentally friendly and will not cause harm to the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front view schematic diagram of embodiment 1;

[0017] Figure 2 yes Figure 1 Schematic diagram of the left side;

[0018] Figure 3 yes Figure 1 A right side schematic diagram of

[0019] Figure 4 yes Figure 1 AA cross-sectional view of ;

[0020] Figure 5 yes Figure 4 BB cross-sectional view;

[0021] Figure 6 yes Figure 4 A partial enlarged view of

[0022] Figure 7 is a schematic structural diagram of Embodiment 2;

[0023] Figure 8 yes Figure 7 Schematic diagram of CC cross-section;

[0024] Fig. 9 is a schematic structural diagram of Embodiment 3;

[0025] Fig.10 is a schematic structural diagram of Embodiment 4;

[0026] Fig.11 is a structural schematic diagram of Embodiment 5;

[0027] Fig.12 is a schematic structural diagram of Example 6;

[0028] In the figure: 1-box, 2-insert frame, 3-air inlet grille, 4-air inlet plate, 5-air outlet grille, 6-air outlet plate, 7-deodorizing filter, 8-cylinder, 9-fan, 10-partition, 11-dust filter, 12-irradiation lamp, 13-rubber strip, 14-guide frame, 15-air inlet bell mouth, 16-air outlet bell mouth, 17-air guide tube, 18-blocking plate, 19-arc body, 20-filter box section, 21-inner frame, 22-fan box section. DETAILED DESCRIPTION Example 1

[0029] The structure of the deodorizing box in this embodiment is shown in the attached Figure 1-6 As shown, the deodorizing box includes a box body 1, the two ends of the box body 1 are air inlet and air outlet, the side of the box body 1 is processed with an opening, and a plug-in frame 2 is sealed. Figure 1 shown.

[0030] The air inlet is arranged on the air inlet plate 4, and the air inlet grille 3 is installed in the air inlet. Figure 2 The air inlet grille 3 is used to block large-sized light floating objects in the air, such as plastic bags, cotton wool, thin paper sheets, etc. The air outlet is set on the air outlet plate 6, and the air outlet grille 5 is installed in the air outlet. Figure 3 As shown, the air outlet grille 5 is preferably tilted upward. Figure 4 As shown, in this way, the flowing air blown out from the air outlet is guided to flow upward, which helps to promote the air flow in the room.

[0031] Inside the box 1, as shown in the attached Figure 4-6 As shown, a deodorizing filter 7, a fan device, a partition 10, a dust filter 11, an irradiation lamp 12, a rubber strip 13, a guide frame 14, etc. are installed. The partition 10 is fixedly installed in the middle of the box body 1, dividing the box body into a filter chamber and a deodorizing chamber. One end of the filter chamber is an air inlet plate 4, and one end of the deodorizing chamber is an air outlet plate 6. A circular hole is processed in the center of the partition 10, and a fan device is installed in the circular hole. The fan device is purchased from outside, and the air volume meets the design requirements. The fan device includes a cylinder 8 and a fan 9. The fan 9 is fixed in the cylinder 8. When the fan 9 rotates, air flow is formed in the cylinder 8. On the deodorizing chamber side of the partition 10, an irradiation lamp 12 is installed, and the irradiation lamps 12 are evenly distributed around the fan device.

[0032] Guide frames 14 are fixedly installed on the inner wall of the filter chamber and the deodorization chamber, and the spacing of the guide frames 14 corresponds to the thickness of the insert frame 2. The insert frame 2 is inserted between the guide frames 14 from the opening, and the guide frame 14 and the insert frame 2 form a curved surface seal, and at the same time play the role of insertion guide positioning. The inserted insert frame 2 is fixed under the constraint of the guide frame 14, and it is ensured that all air passes through the filter screen, and does not pass through the edges of the insert frame 2 and the guide frame 14. After the insert frame 2 is fully inserted, the opening on the side of the box is sealed. The dust removal filter 11 is installed on the insert frame 2 in the filter chamber, and the deodorization filter 7 is installed on the insert frame 2 in the deodorization chamber. Grooves are designed around the periphery of the insert frame 2, and the grooves cooperate with the rubber strips 13. Through the elastic deformation of the rubber strips 13 in the grooves, the deodorization filter 7 or the dust removal filter 11 is fixed on the insert frame 2. This connection and fixing method facilitates the installation and replacement of the deodorization filter 7 and the dust removal filter 11.

[0033] Taking the direction of air flow as the front, this embodiment sets three guide frames 14 in the filter chamber and two installation positions of dust removal filters 11, one for use and one for backup. Six guide frames 14 and five installation positions of deodorization filters 7 are set in the deodorization chamber, and the number of deodorization filters 7 installed is freely determined by the user.

[0034] The main component of the deodorant is modified photocatalyst titanium dioxide, which is obtained by modifying photocatalyst titanium dioxide. Photocatalyst titanium dioxide is a photo-semiconductor material with photocatalytic function. Under the action of ultraviolet light or visible light, it produces a strong catalytic degradation function, can effectively degrade toxic and harmful gases in the air, can effectively kill a variety of bacteria, and can decompose and harmlessly treat toxins released by bacteria or fungi. At the same time, it also has the functions of removing formaldehyde, deodorizing, anti-fouling, and purifying the air. In order to enhance the deodorizing effect, the deodorant should use modified photocatalyst titanium dioxide. Modified photocatalyst titanium dioxide is modified on the basis of photocatalyst titanium dioxide. The modified material is attached to the surface of photocatalyst titanium dioxide particles, so that the entire spherical surface of titanium dioxide particles has a catalytic effect. Whether it is facing the light side or the backlight side, the electron-hole pairs generated under ultraviolet light or visible light conditions are doubled, and it has the function of rapid absorption and rapid degradation, thereby doubling the degradation rate of titanium dioxide for odor.

[0035] The main components of modified photocatalyst titanium dioxide are photocatalyst titanium dioxide and modifying materials, and the modifying materials are photoinducers and light absorbers. Photocatalyst titanium dioxide and modifying materials are mixed in a solvent and manufactured through a process of stirring, impregnation, grinding, etc. All processes are physical methods and there is no chemical reaction. The purpose of stirring is to promote the dissolution of the modified material in the solvent and to promote the dispersion of titanium dioxide particles and full contact with the modified material; the purpose of impregnation is to infiltrate the modified material solution into the surface and cavities of titanium dioxide particles; the purpose of grinding is to fully disperse and impregnate nano-scale titanium dioxide particles. The product is ground into a paste, and when used, it is diluted with water in proportion, and inorganic adhesives such as water glass, silica sol, etc. are added at the same time to become a deodorant liquid. Spray or directly soak the deodorant liquid that is stirred evenly on the deodorizing filter. After drying, the deodorant adheres to the filter. After the deodorant liquid dries, the water and solvent evaporate, and the modified material precipitates as a solute and adheres to the surface and cavities of the nano-sized titanium dioxide particles to become modified photocatalyst titanium dioxide. Under the premise that the deodorant is not covered, the modified photocatalyst titanium dioxide can continue to deodorize for more than one year. The deodorant does not use volatile chemical organic matter and will not cause any harm to the human body. The purpose of using a dust filter is to prevent dust or floating objects in the air from covering the deodorant and affecting the odor removal effect of the deodorant. The purpose of installing an irradiation lamp is to provide lighting conditions for the modified photocatalyst titanium dioxide and give full play to the catalytic effect of the photocatalyst titanium dioxide.

[0036] When air passes through the holes on the deodorizing filter, the deodorizer attached to the filter can fully contact with the flowing air. This method greatly increases the contact area between the odor in the air and the deodorizer, enhancing the deodorizing effect and deodorizing efficiency. A dust filter is set before the deodorizing filter to block dust, in order to prevent dust from covering the deodorizer on the deodorizing filter, ensuring that the deodorizer can continue to deodorize for a long time.

[0037] The ventilation cross-sectional area of ​​the fan device cylinder is much lower than the ventilation area of ​​the deodorizing filter. Under the condition of the same ventilation volume, reducing the ventilation speed of the deodorizing filter is beneficial to the full contact and reaction between the odor in the air and the deodorizer, and enhancing the degradation and sterilization function of the deodorizer.

[0038] The irradiation lamp and fan both use safe voltage, and it is advisable to use the USB interface to connect the power supply. The ultra-low safety voltage will not cause leakage or fire accidents, enhance safety, and have a good silent effect. The irradiation lamp can emit visible light or ultraviolet light, with light emission as the main function, and low-power LED lights can be used.

[0039] When using this embodiment, the deodorizing box is placed in an out-of-the-way place near a wall or a corner, such as under a bed or under a table, with the air inlet facing the room and the air outlet facing the wall or corner. Connect the socket, turn on the power, light the irradiation lamp in the box, start the fan, draw in indoor air from the air inlet, and discharge it from the air outlet, forming a forced circulation of indoor air. When the indoor air passes through the dust removal filter, the dust in the air is filtered. When passing through the deodorizing filter, the deodorizer is fully contacted with the modified photocatalyst titanium dioxide deodorizer under the action of light to remove the odor in the air, thereby achieving the effect of removing the indoor odor. Example 2

[0040] This embodiment is an improvement on the embodiment 1, and its structure is as shown in the attached figure. Figure 7 To reduce air turbulence in the box, an air inlet bell mouth 15 and an air outlet bell mouth 16 are installed on both sides of the fan device, respectively, and aerodynamics is used to reduce air flow resistance. The ventilation cross section of the box 1 can be changed from the square of embodiment 1 to a circle, as shown in the attached figure. Figure 8 As shown, an air guide tube 17 is arranged at the front end of the air inlet bell mouth 15 , and the air inlet bell mouth 15 and the air outlet bell mouth 16 are blocked with a blocking plate 18 from the corner of the box body, forcing the air to flow from the cylinder 8 .

[0041] In this embodiment, the irradiation lamp 12 is installed in the cavity between the air outlet bell mouth 16 and the partition 10. The air outlet bell mouth 16 is required to have a light-transmitting function, such as using transparent glass, transparent plastic and other materials to ensure that visible light or ultraviolet light can irradiate the deodorizing filter 7. Example 3

[0042] This embodiment is an improvement on the embodiment 2, and its structure is as shown in the attached Fig. 9 As shown. The partition 10 is removed, and the air inlet bell mouth 15 and the air outlet bell mouth 16 are combined into a curved body 19, which divides the filter chamber and the deodorization chamber. The air inlet and air outlet ends of the fan are also bell mouths, and the inner corners of the box are also blocked by a blocking plate 18. The irradiation lamp 12 is installed in the curved body 19 on the inner wall of the box, which can also provide lighting conditions for the deodorization filter 7. The fan device is installed at the position where the inner diameter of the curved body 19 is the smallest, and it is preferably fixed by gluing.

[0043] To enhance the illumination condition of the deodorizing filter 7, an additional illumination lamp 12 is provided between the deodorizing filter 7, and at least one side of each deodorizing filter 7 is directly illuminated by visible light or ultraviolet light. In the case of single-side illumination, the deodorizing agent is modified photocatalyst titanium dioxide.

[0044] Compared with the above two embodiments, the deodorizing filter in this embodiment receives sufficient light, the catalytic effect of the modified photocatalyst titanium dioxide can be fully exerted, and the deodorizing effect is good and the efficiency is high. Example 4

[0045] This embodiment is an improvement on the embodiment 3, and its structure is as shown in the attached Fig.10 As shown. The filter cavity and the deodorization cavity are combined into one cavity, the deodorization filter 7 is arranged behind the dust removal filter 11, the fan device is arranged behind the deodorization filter 7, and the irradiation lamp 12 is arranged between the deodorization filters 7, and each layer of the deodorization filter 7 has at least one side directly irradiated by visible light or ultraviolet light. In the case of single-sided irradiation, the deodorant uses modified photocatalyst titanium dioxide.

[0046] Compared with Embodiment 2 and Embodiment 3, this embodiment facilitates the replacement of the irradiation lamp because no irradiation lamp is installed in the arc-surface body or the air outlet bell mouth, and the irradiation lamp can be replaced without disassembling the arc-surface body or the air outlet bell mouth; secondly, the material of the arc-surface body is not limited, and the arc-surface body can be hollow or solid, and can be made of light-transmitting material or opaque material, which greatly facilitates material selection and lays a foundation for reducing costs for marketization. Example 5

[0047] This embodiment is an improvement on the embodiment 4, and its structure is as shown in the attached Fig.11 As shown. Both sides of each layer of deodorizing filter 7 are directly irradiated with visible light or ultraviolet light, and the backlight side of the last layer of deodorizing filter 7 can use the reflected light of the arc surface body 19. Compared with the above embodiment, this embodiment strengthens the illumination conditions of the deodorant, thereby strengthening the deodorizing function of the deodorant. In the case of double-sided irradiation of the deodorizing filter, the deodorant can use photocatalyst titanium dioxide instead of the more expensive modified photocatalyst titanium dioxide. Example 6

[0048] In the above embodiment, a plug-in frame is used, and the deodorizing filter is installed on the plug-in frame. The plug-in frame can be pulled out to check and replace the deodorizing filter. Due to the filtering measures, the inspection and replacement time of the deodorizing filter is relatively long, usually more than half a year. In order to prevent the deodorizing filter from being damaged by plugging and unplugging the plug-in frame, the structure of this embodiment can be adopted, as shown in the attached Fig.12 shown.

[0049] The housing of this embodiment is formed by plugging and sealing the filter box section 20 and the fan box section 22, which are fastened with screws. A fan device is installed in the fan box section 22, and a deodorizing filter 7 and an irradiation lamp 12 are installed in the filter box section 20. A row of irradiation lamps and a layer of deodorizing filter are arranged in each filter box section 20. Here, a row can be one or multiple neatly arranged. An inner frame 21 is fixedly installed on the inner wall of the filter box section 20, and the deodorizing filter 7 is installed on the inner frame 21. The filter installation method is the same as the installation of the plug-in frame and the filter in the above embodiment.

[0050] This embodiment changes the way of replacing the filter, from a one-piece box with an insert frame to a box section without an insert frame. This is another variant of the above embodiment, and the deodorizing filter can avoid damage by young children or curious elderly people. In addition, this embodiment does not limit the cross-sectional shape of the box. In the above embodiment, in order to match the insert frame, the box is preferably square, but this embodiment can adopt various shapes such as round, and can be specially designed for unique environments.

[0051] It should be noted that:

[0052] 1) Example 1 and Example 6 are the basis of the utility model, which can achieve the purpose of removing odor and marketization. Example 2 is an improvement on the air flow in the box. From Example 3 to Example 5, the focus is on the improvement of the lighting conditions, and the position of the fan device is changed. In Example 1 to Example 4, the deodorant uses modified photocatalyst titanium dioxide, and photocatalyst titanium dioxide can also be used as a substitute. Although there is a deodorizing effect after the substitution, the deodorizing effect and efficiency are poor, far inferior to modified photocatalyst titanium dioxide. Therefore, considering the deodorizing effect and efficiency, low cost of marketization, and the convenience of filter inspection and replacement, Example 5 is the best choice.

[0053] 2) The difference between modified photocatalyst titanium dioxide and photocatalyst titanium dioxide is whether the deodorant liquid contains modified materials. If modified materials are added, it is modified photocatalyst titanium dioxide, and if not, it is photocatalyst titanium dioxide. The method of attaching to the filter is the same.

[0054] 3) The dust removal filter in the present invention emphasizes the dust removal function, and a deodorizing filter can also be used as a dust removal filter because the deodorizing filter also has a dust removal function.

[0055] 4) In the present invention, if a soft rubber strip is provided around the insert frame and the soft rubber strip is used to seal with the inner wall of the box, the guide frame may not be designed. This is because the sealing of the guide frame and the function of forcing air to flow from the filter are the main functions, while the insertion guide is only an auxiliary function.

[0056] 5) In the present invention, the air inlet and outlet bell mouths of the fan device can be replaced with conical mouths, but the bell mouth is more conducive to the flow of air Coanda effect.

[0057] 6) From the perspective of maintenance, the air inlet and outlet plates of Examples 1-5 are preferably designed as door-type structures. When replacing the irradiation lamp or repairing the fan, the plug-in frame can be pulled out and the air inlet or outlet plate can be opened. The air inlet and outlet plates in Example 6 can be fixed, and can be repaired or replaced by removing the screws and pulling out the box section.

[0058] 7) The utility model sets the fan device behind the dust filter only to improve the working environment of the fan and increase its service life. The fan device can also be set in front of the dust filter without affecting the function and use of the utility model.

[0059] Compared with the nano photocatalyst air deodorizing device in CN219231970U, the utility model has the advantages of 1) simple structure, low manufacturing cost and suitable for marketization. 2) air is fully in contact with the deodorizing agent on the multi-layer deodorizing filter, and the deodorizing is thorough and efficient, which is an upgrade of the deodorizing device and has more practical value.

[0060] According to the test of a professional third-party testing agency, the three-layer filter, using modified photocatalyst titanium dioxide deodorizer, has achieved the effect of removing more than 90% of the odor (the data in the test report is only for ammonia and hydrogen sulfide gases), and the odor can no longer be smelled at the air outlet. Therefore, the deodorizing filter should not exceed five layers to avoid excessive air flow resistance.

[0061] The utility model was tried out in the elderly room where the odor was not serious. One or two deodorizing boxes could solve the odor in the room (related to the area of ​​the room). In the elderly room where the odor was serious, the deodorizer sprayed on the wall and the roof was used to remove the odor. The air outlet of the box was blown to the wall or the corner, so that the air flow that had not completely removed the odor would react with the deodorizer sprayed on the wall and the roof again. Two months later, the room was investigated again and there was still no old smell. The utility model not only strengthens the air flow in the room, but also makes the air fully contact with the deodorizer on the wall and the roof, accelerating the removal of odor in the room. This enhanced deodorizing effect is more suitable for removing old smell in the elderly room.

[0062] The utility model is small in size and light in weight. It can be placed under the bed or hung on the wall and other places where it is not in the way. It can remove odors by plugging in. It is powered by a USB power supply, which is convenient and safe to use. The air outlet faces the wall or the corner, which can force the indoor air to circulate, which is conducive to the removal of odors.

[0063] The principle of removing odors by this utility model is not ventilation, and does not require air circulation with the outside, nor does it require chemical fragrances to volatilize and dilute the odors. Instead, it uses modified photocatalyst titanium dioxide to degrade the odors in the room. As long as the amount of odor decomposition in the room is greater than the amount of odor generation, there will be no odor in the room. This utility model is particularly suitable for rooms in nursing homes or elderly homes. The modified photocatalyst titanium dioxide deodorizer has a long time of use for deodorizing, is pollution-free, has no organic matter volatilization, will not affect health, uses USB ultra-low voltage, and is safe and environmentally friendly.

Claims

1. An indoor deodorizing box, comprising a box body, the two ends of which are air inlet and air outlet, and an irradiation lamp and a fan device are installed inside the box body; the characteristics are: The fan device is fixed on a partition (10) or a curved body (19), and the partition (10) or the curved body (19) is fixed on the inner wall of the box body to divide the box body into a filter chamber and a deodorizing chamber; the fan device comprises a barrel (8) and a fan (9), and the fan (9) is fixed in the barrel (8); the box body is square, and the side plate is processed with an opening, and the opening is inserted into the insertion frame (2); the deodorizing filter (7) is installed on the insertion frame (2); the mesh of the deodorizing filter (7) is ventilated, and a deodorizing agent is attached to the deodorizing filter (7).

2. An indoor deodorizing box according to claim 1, characterized in that: The irradiation lamp is arranged between the deodorizing filters (7).

3. The indoor deodorizing box according to claim 1, characterized in that: The air inlet and the air outlet are respectively provided with an air inlet grille (3) and an air outlet grille (5); the air outlet grille (5) is inclined upwards.

4. The indoor deodorizing box according to claim 1, characterized in that: The ventilation area of ​​the cylinder (8) is smaller than the ventilation area of ​​the deodorizing filter (7).

5. The indoor deodorizing box according to claim 1, characterized in that: The air inlet and outlet ends of the fan (9) are bell-shaped or conical.

6. The indoor deodorizing box according to claim 1, characterized in that: When the filter chamber and the deodorizing chamber are combined into one chamber, the chamber is formed by plugging and sealing a filter box section (20) and a fan box section (22); a fan device is installed in the fan box section (22); a row of irradiation lamps and a layer of deodorizing filter are arranged in each filter box section (20); an inner frame (21) is fixedly installed on the inner wall of the filter box section (20), and the deodorizing filter (7) is installed on the inner frame (21).

7. The indoor deodorizing box according to claim 6, characterized in that: A groove is designed around the periphery of the insert frame (2) or the inner frame (21), and the deodorizing filter (7) is fixed in the groove by a rubber strip (13).

8. The indoor deodorizing box according to claim 1, characterized in that: The irradiation lamp and the fan device are electrically connected using a USB interface.

9. The indoor deodorizing box according to claim 1, characterized in that: The deodorizing filter (7) has no more than five layers.

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