Cleaning brush

Abstract

The utility model relates to the technical field of household appliances, and discloses a cleaning brush which comprises a shell, an air inlet, an air outlet, a cleaning brush body and a cleaning brush body. The brush head is arranged on the shell and located at the air inlet, and a hair suction opening is formed in the position, corresponding to the air inlet, of the brush head; the sterilization module can be arranged in the shell and is used for sterilizing bacteria on the hair; and the fan is arranged in the shell and can drive airflow to sequentially pass through the air inlet and the sterilization module and be exhausted from the air outlet. In the use process of the cleaning brush, the fan can drive airflow to carry hair falling in the brushing process to sequentially pass through the air inlet and the sterilization module, the sterilization module can sterilize bacteria on the hair, and therefore the hair falling in the brushing process is collected, and the cleaning brush is convenient to use. And bacteria on the hair are prevented from diffusing into the air to generate peculiar smell to influence the health of family members, so that the health of the family members, especially the old and children, is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a cleaning brush. Background Technology

[0002] As living standards improve, more and more families are choosing to keep pets. However, pet hair and dander can become a breeding ground for allergens and bacteria, affecting the health of family members.

[0003] The pet hair cleaning brush in this technology includes a brush head, a main box, and a fan installed inside the main box. The fan can absorb pet hair that falls off during brushing, preventing it from harming the human respiratory tract. However, during use, bacteria on the pet hair can still spread into the air and produce an odor. Utility Model Content

[0004] In view of this, the present invention provides a cleaning brush to solve the problem that, during the use of cleaning brushes in related technologies, bacteria on the hair can still spread into the air and produce odors.

[0005] This utility model provides a cleaning brush, comprising:

[0006] The casing has an air inlet and an air outlet connected in sequence.

[0007] The brush head is located on the housing and at the air inlet, with a brush head forming a hair suction port at the position corresponding to the air inlet.

[0008] The sterilization module can be installed inside the housing to sterilize bacteria on the hair.

[0009] The fan, located inside the casing, drives the airflow through the air inlet and the sterilization module in sequence and is discharged from the air outlet.

[0010] Beneficial effects: During use, the cleaning brush of this utility model embodiment uses a fan to drive airflow to carry the hair that falls off the brush through the air inlet and the sterilization module. The sterilization module can sterilize the bacteria on the hair, thereby collecting the hair that falls off the brush and preventing the bacteria on the hair from spreading into the air, producing odors that could affect the health of family members. It also reduces the problem of indoor air quality decline caused by pets, reduces the risk of disease transmission, and protects the health of family members, especially the elderly and children.

[0011] In one optional implementation, the sterilization module includes:

[0012] The main module contains a processing chamber.

[0013] The steam generator is located inside the processing room;

[0014] A steam delivery pipe is connected to a steam generator, and a mist outlet is formed on the steam delivery pipe to release steam into the processing chamber.

[0015] Beneficial effects: With this setup, the steam generator can produce high-temperature steam, and the steam delivery pipe can evenly distribute the steam into the processing chamber, so that the high-temperature steam can fully contact the hair, effectively killing various bacteria and viruses attached to the hair, helping to remove grease, dust and other dirt from the hair, and eliminating odors caused by bacterial growth.

[0016] In one alternative implementation, filters are formed on both sides of the module body, on the air inlet side and / or air outlet side.

[0017] Beneficial effects: The filter can filter the airflow entering or exiting the sterilization module, thereby preventing the airflow from carrying hair out of the air outlet, thus preventing hair from being dispersed into the air and becoming an allergen, affecting the health of family members.

[0018] In one alternative implementation, the sterilization module is detachably mounted on the housing.

[0019] Beneficial effects: With this setup, after the brushing is finished, the operator can remove the sterilization module from the housing, and the collected hair can be easily removed from the device and disposed of, ensuring the cleanliness and hygiene of the cleaning brush.

[0020] In one alternative implementation, the filter module is detachably mounted on the housing and can be interchanged with the sterilization module.

[0021] Beneficial effects: With this setup, when air purification is needed, the operator can remove the sterilization module from the housing and install the filter module inside. At this time, the fan can drive the airflow through the filter and then discharge it outward. The filter assembly can be used to filter out pollutants such as particulate matter, dust, bacteria, and viruses in the air when cleaning hair, thereby improving indoor air quality.

[0022] Therefore, the cleaning brush of this utility model can not only be used as a pet cleaning brush to clean pet hair, but also be used to purify the surrounding air, reducing the problem of indoor air quality decline caused by pets. Moreover, the cleaning brush has a simple and compact structure, making it easy to carry.

[0023] In one alternative embodiment, a vent and a fan inlet are formed on the side wall of the housing, and a filter inlet and / or a filter outlet are provided on the filter module at positions corresponding to the vents.

[0024] Beneficial effects: In an optional embodiment, both the filter inlet and the filter outlet are formed at positions corresponding to the vents, and the fan can drive the airflow to pass through the filter inlet and the fan in sequence, and finally output it outward from the filter outlet.

[0025] In one alternative implementation, the brush head includes:

[0026] A transparent mounting plate is attached to the housing, and a hair suction port is formed on the transparent mounting plate;

[0027] The brush bristles are mounted on a transparent mounting plate. The cleaning brush also includes a UV germicidal lamp mounted on the housing, which emits UV light toward the transparent mounting plate.

[0028] Beneficial effects: With this setup, the ultraviolet light emitted by the UV germicidal lamp can pass through the transparent mounting plate and shine on the bristles and pet hair. This allows users to not only use the UV germicidal lamp to kill bacteria, viruses, and other microorganisms attached to the hair while brushing, but also to clean the bristles. This greatly reduces the problem of bacterial growth caused by improper cleaning, ensuring that the cleaning brush achieves the best cleaning effect every time it is used.

[0029] In one alternative implementation, the cleaning brush further includes:

[0030] The handle is attached to the housing;

[0031] The control component, located on the handle, is connected in communication with the UV germicidal lamp and can control the UV germicidal lamp to switch between on and off modes.

[0032] Beneficial effects: When using the cleaning brush, users can hold the handle and drive the operating parts, which makes it easier for users to apply force and helps to improve the user experience.

[0033] In one alternative implementation, the cleaning brush further includes:

[0034] The deodorization module is located inside the housing and upstream of the sterilization module.

[0035] Beneficial effects: The deodorizing module removes the odor naturally present in pet hair, further preventing unpleasant smells from being created during brushing.

[0036] In one alternative implementation, the deodorization module includes:

[0037] The pre-filter is located inside the housing;

[0038] The main filter or adsorbent is located inside the housing and downstream of the pre-filter, and is used to remove odors from the airflow.

[0039] Beneficial effects: The pre-filter removes larger particles such as dust and hair, protecting subsequent purification equipment. The main filter or adsorbent can be activated carbon or other highly efficient adsorption materials to absorb odor molecules in the air. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a cleaning brush in hair sterilization mode according to an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of a cleaning brush according to an embodiment of the present utility model. The direction indicated by the arrow in the diagram is the airflow direction inside the cleaning brush in the hair sterilization mode.

[0043] Figure 3 This invention relates to a sterilization module for a cleaning brush, as described in an embodiment of the present invention.

[0044] Figure 4 for Figure 3 A cross-sectional view of the sterilization module shown;

[0045] Figure 5 for Figure 3 A cross-sectional view of the main body of the sterilization module shown;

[0046] Figure 6 for Figure 3 A side view of the main body of the sterilization module shown;

[0047] Figure 7 This is a schematic diagram of a cleaning brush in air purification mode according to an embodiment of the present invention;

[0048] Figure 8 for Figure 7 A cross-sectional view of a cleaning brush;

[0049] Figure 9 This is a schematic diagram of a control method for a cleaning brush in hair sterilization mode according to an embodiment of the present invention;

[0050] Figure 10 This is a schematic diagram of a control method for a cleaning brush in air purification mode according to an embodiment of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Housing; 101. Air inlet; 102. Air outlet; 103. Ventilation opening; 104. Fan air inlet;

[0053] 2. Brush head; 201. Suction nozzle; 202. Transparent mounting plate; 203. Brush bristles;

[0054] 3. Sterilization module; 301. Module body; 302. Steam generator; 3021. Heating element; 303. Steam delivery pipe; 304. Mist outlet; 305. Filter screen;

[0055] 4. Fan;

[0056] 5. Filtering module;

[0057] 6. Handle; 601. Control components; 602. Hair sterilization button; 603. Air purification button; 604. Power switch;

[0058] 7. Deodorization module;

[0059] 8. Ultraviolet germicidal lamp. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0061] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0062] According to an embodiment of the present invention, a cleaning brush is provided, comprising a housing 1, a brush head 2, a sterilization module 3, and a fan 4.

[0063] The housing 1 has an air inlet 101 and an air outlet 102 connected in sequence. A brush head 2 is disposed on the housing 1 and located at the air inlet 101, with a hair suction port 201 formed at the position corresponding to the air inlet 101 on the brush head 2. A sterilization module 3 can be disposed inside the housing 1 for sterilizing bacteria on the hair. A fan 4 is disposed inside the housing 1 and can drive airflow to pass sequentially through the air inlet 101 and the sterilization module 3 and be discharged from the air outlet 102.

[0064] In the use of the cleaning brush of this utility model embodiment, the fan 4 can drive the airflow to carry the hair that falls off the brush bristles 203 through the air inlet 101 and the sterilization module 3 in sequence. The sterilization module 3 can sterilize the bacteria on the hair, thereby collecting the hair that falls off the brush bristles 203 during the process and preventing the bacteria on the hair from spreading into the air, producing odors that affect the health of family members, reducing the problem of indoor air quality decline caused by pets, reducing the risk of disease transmission, and protecting the health of family members, especially the elderly and children.

[0065] In one embodiment, such as Figure 3 and Figure 4 As shown, the sterilization module 3 includes a module body 301, a steam generator 302, and a steam delivery pipe 303.

[0066] The module body 301 contains a processing chamber. A steam generator 302 is located within the processing chamber. A steam delivery pipe 303 is connected to the steam generator 302, and a mist outlet 304 is formed on the steam delivery pipe 303 for releasing steam into the processing chamber.

[0067] With this configuration, the steam generator 302 can generate high-temperature steam, and the steam delivery pipe 303 can evenly distribute the steam into the processing chamber so that the high-temperature steam can fully contact the hair, effectively killing various bacteria and viruses attached to the hair, helping to remove grease, dust and other dirt from the hair, and eliminating odors caused by bacterial growth.

[0068] The steam generator 302 preferably includes, but is not limited to, a heating element 3021 and a water tank. The heating element 3021 is a key component used to generate high temperatures to achieve a sterilization effect. Its main function is to raise the temperature to a level sufficient to kill bacteria, viruses and other microorganisms through electric heating or other means, without producing harmful chemicals, and is relatively safe for the environment and human body.

[0069] The mist outlets 304 are preferably multiple and spaced apart, which facilitates the uniform release of steam into the processing chamber.

[0070] In one embodiment, such as Figure 5 and Figure 6 As shown, filters 305 are formed on both sides of the module body 301, on the air inlet side and / or air outlet side.

[0071] The filter 305 can filter the airflow entering or exiting the sterilization module 3, thereby preventing the airflow from carrying hair through the air outlet 102 and thus preventing hair from being dispersed into the air and becoming an allergen, affecting the health of family members.

[0072] The following describes the usage process of the steam generator 302 of the cleaning brush in this embodiment of the invention:

[0073] First, add an appropriate amount of water to the water tank of the steam generator 302, start the steam generator 302, and the heating element 3021 heats the water to boiling, generating high-temperature steam.

[0074] Next, high-temperature steam is delivered to the treatment chamber through steam delivery pipe 303. When the hair to be disinfected enters the treatment chamber, the steam fills the entire treatment chamber, so that the high-temperature steam can effectively kill bacteria, viruses and other microorganisms.

[0075] After disinfection is completed, the steam supply is turned off, and the treatment room is allowed to cool naturally, or the fan 4 is turned on to accelerate the cooling of the system through airflow.

[0076] Finally, after the temperature in the treatment room has dropped to a safe level, the disinfected hair is removed.

[0077] In one embodiment, the sterilization module 3 is detachably mounted on the housing 1.

[0078] With this setup, after the bristles 203 have finished cleaning, the operator can remove the sterilization module 3 from the housing 1, and the collected hair can be easily removed from the device and disposed of, ensuring the cleanliness and hygiene of the cleaning brush.

[0079] Specifically, in an optional embodiment, the housing 1 is hinged to an openable and closable door.

[0080] When brushing 203 is needed, the operator can insert the sterilization module 3 into the housing 1 through the door and close the door. After brushing 203 is finished, the operator can open the door and remove the sterilization module 3 from the door for cleaning.

[0081] In one embodiment, the cleaning brush further includes a filter module 5. The filter module 5 is detachably mounted on the housing 1 and can be interchanged with the sterilization module 3.

[0082] With this setup, when air purification is needed, the operator can remove the sterilization module 3 from the housing 1 and install the filter module 5 into the housing 1. At this time, the fan 4 can drive the airflow through the filter screen 305 and then discharge it to the outside. The filter assembly can be used to filter out pollutants such as particulate matter, dust, bacteria, and viruses in the air when cleaning hair, so as to improve indoor air quality.

[0083] Therefore, the cleaning brush of this utility model can not only be used as a pet cleaning brush to clean pet hair, but also be used to purify the surrounding air, reducing the problem of indoor air quality decline caused by pets. Moreover, the cleaning brush has a simple and compact structure, making it easy to carry.

[0084] In one embodiment, the cleaning brush has at least two operating modes: a hair sterilization mode and an air purification mode.

[0085] When the cleaning brush is in hair sterilization mode, the UV sterilization lamp 8, deodorization module 7, sterilization module 3 and fan 4 are in working condition.

[0086] When the cleaning brush is in air purification mode, the ultraviolet germicidal lamp 8, the filter module 5, and the fan 4 are in operation.

[0087] Specifically, when the cleaning brush is in hair sterilization mode, the operator can control the control component 601 to activate the ultraviolet germicidal lamp 8, thereby utilizing the sterilization properties of the ultraviolet germicidal lamp 8 to eliminate bacteria, viruses, and other microorganisms attached to the hair. The fan 4 operates, driving airflow to carry pet hair through the air inlet 101 into the sterilization module 3. The sterilization module 3 effectively kills various germs and viruses attached to the hair through the action of high-temperature steam, helping to remove grease, dust, and other dirt from the hair and eliminate odors caused by bacterial growth.

[0088] The following describes the control method of the cleaning brush in the hair sterilization mode according to an embodiment of the present invention:

[0089] like Figure 9 As shown, first, after turning on the cleaning brush, press the hair sterilization button 602; its function is to start the hair sterilization mode.

[0090] Then pull the trigger; its function is to activate the ultraviolet germicidal lamp 8 to remove bacteria and viruses from the hair.

[0091] When the suction port 201 is opened, the suction channel and the blower 4 are opened simultaneously; the function is to suck the pet hair and the hair attached to the brush head 2 into the cleaning brush bristles 203 and the high-temperature steam sterilization device.

[0092] Then activate deodorization module 7; its function is to remove the odor naturally present in pet hair.

[0093] Finally, the sterilization module 3 is activated; its function is to remove bacteria and viruses from hair.

[0094] The following describes the control method of the cleaning brush in air purification mode according to an embodiment of this utility model:

[0095] First, such as Figure 10 As shown, after powering on, the operator presses the air purification button 603 to start the air purification mode;

[0096] Next, the operator presses the trigger to start the ultraviolet germicidal lamp 8, which removes bacteria and viruses from the hair.

[0097] When the fan 4 starts working, it draws air into the housing 1, and the filter module works to purify the air.

[0098] In one embodiment, the cleaning brush is further provided with a hair sterilization button 602, an air purification button 603, and a power button 604.

[0099] The 604 switch is used to turn the cleaning brush machine on or off.

[0100] Among them, the hair sterilization key 602 is communicatively connected to the deodorization module 7, the sterilization module 3 and the fan 4, and can control the deodorization module 7, the sterilization module 3 and the fan 4 to work in a preset order when triggered.

[0101] The air purification button 603 is connected to the fan 4 and can control the fan 4 to work when it is triggered.

[0102] In one embodiment, a vent 103 and a fan inlet 104 are formed on the side wall of the housing 1, and a filter inlet and / or a filter outlet are provided on the filter module 5 at the position corresponding to the vent 103.

[0103] In an optional embodiment, both the filter inlet and the filter outlet are positioned corresponding to the vent 103, and the fan 4 can drive the airflow to pass through the filter inlet and the fan 4 in sequence and finally output it outward from the filter outlet.

[0104] As an alternative implementation, in an embodiment not shown in the accompanying drawings, the filter module 5 is provided with a filter outlet at a position corresponding to the vent 103, and the fan 4 can drive the airflow to pass sequentially through the fan inlet 104, the filter module 5 and the filter outlet, and finally output it outward from the vent 103.

[0105] A filter inlet is provided on the filter module 5 at the position corresponding to the vent 103. The airflow can pass through the filter inlet and the fan 4 in sequence under the action of the fan 4, and be output to the outside from the air outlet 102 of the housing 1.

[0106] As another alternative implementation, in yet another embodiment not shown in the accompanying drawings, in the air purification mode, the airflow passes sequentially through the air inlet 101 and the filter 305 of the housing 1, and is finally output from the air outlet 102 of the housing 1.

[0107] In one embodiment, the brush head 2 includes a transparent mounting plate 202 and bristles 203.

[0108] The transparent mounting plate 202 is connected to the housing 1. A bristle suction port 201 is formed on the transparent mounting plate 202. Bristles 203 are disposed on the transparent mounting plate 202. The cleaning brush also includes an ultraviolet germicidal lamp 8, which is disposed on the housing 1 and is capable of emitting ultraviolet light toward the transparent mounting plate 202.

[0109] With this setup, the ultraviolet light emitted by the ultraviolet germicidal lamp 8 can pass through the transparent mounting plate 202 and irradiate the bristles 203 and pet hair. This allows users to not only use the ultraviolet germicidal lamp 8 to kill bacteria, viruses, and other microorganisms attached to the hair when cleaning the bristles 203, but also to clean the bristles 203. This greatly reduces the problem of bacterial growth caused by improper cleaning, ensuring that the cleaning brush achieves the best cleaning effect every time it is used.

[0110] In one embodiment, a hair collection structure is formed on the transparent mounting plate 202, surrounding the hair suction port 201. The hair collection structure is enlarged in diameter along the direction away from the housing 1 to form a funnel-shaped structure.

[0111] In one embodiment, the cleaning brush also includes a handle 6 and a manipulating component 601.

[0112] The handle 6 is connected to the housing 1. The operating component 601 is located on the handle 6 and is communicatively connected to the ultraviolet germicidal lamp 8, which can control the ultraviolet germicidal lamp 8 to switch between on and off modes.

[0113] When using the cleaning brush 203, the user can hold the handle 6 and drive the control component 601, which makes it easier for the user to apply force and helps to improve the user experience.

[0114] The control component 601 is preferably, but not limited to, a trigger, a touch screen, or a control button.

[0115] In one embodiment, the cleaning brush further includes a deodorizing module 7. The deodorizing module 7 is disposed within the housing 1 and located upstream of the sterilization module 3.

[0116] The deodorizing module 7 is used to remove the odor that is naturally present in pet hair, and can further prevent the brushing process 203 from causing air odor.

[0117] In one embodiment, the air inlet 101 of the housing 1, the deodorization module 7, the sterilization module 3 and the fan 4 are connected in sequence through the hair suction channel.

[0118] In one embodiment, the deodorization module 7 includes a pre-filter, a main filter, or an adsorbent.

[0119] The pre-filter is located inside housing 1, and the main filter or adsorbent is located inside housing 1 and downstream of the pre-filter to remove odors from the airflow.

[0120] The pre-filter removes larger particles such as dust and hair, protecting subsequent purification equipment. The main filter or adsorbent can be activated carbon or other highly efficient adsorption materials to absorb odor molecules in the air.

[0121] The deodorization principle of the deodorization module 7 is preferably, but not limited to, physical adsorption, chemical reaction, photocatalytic oxidation reaction or negative ion technology.

[0122] Physical adsorption, which utilizes the porous structure of materials such as activated carbon to adsorb odor molecules in the air, is the most common method.

[0123] A chemical reaction refers to the reaction between chemical reagents and odorous substances under certain circumstances, producing harmless or low-toxicity compounds.

[0124] Photocatalytic oxidation refers to the generation of free radicals by photocatalysts (such as TiO2) under ultraviolet light. These free radicals have strong oxidizing properties and can decompose organic pollutants into carbon dioxide and water.

[0125] In summary, during use, the cleaning brush of this utility model embodiment allows the fan 4 to drive airflow to carry the hair that falls off the brush bristles 203 through the air inlet 101 and the sterilization module 3. The sterilization module 3 can sterilize the bacteria on the hair, thereby collecting the hair that falls off the brush bristles 203 and preventing the bacteria on the hair from spreading into the air, producing odors that could affect the health of family members. This reduces the problem of declining indoor air quality caused by pets, reduces the risk of disease transmission, and protects the health of family members, especially the elderly and children.

[0126] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope of protection claimed by the present invention.

Claims

1. A cleaning brush, characterized in that, include: The housing (1) has an air inlet (101) and an air outlet (102) connected in sequence. A brush head (2) is disposed on the housing (1) and located at the air inlet (101). A hair suction port (201) is formed at the position corresponding to the air inlet (101) of the brush head (2). The sterilization module (3) can be installed inside the housing (1) and is used to sterilize bacteria on hair. A fan (4) is located inside the housing (1) and can drive airflow through the air inlet (101) and the sterilization module (3) in sequence and out of the air outlet (102).

2. The cleaning brush according to claim 1, characterized in that, The sterilization module (3) includes: The main body of the module (301) contains a processing chamber; A steam generator (302) is located in the processing chamber; A steam delivery pipe (303) is connected to the steam generator (302), and a mist outlet (304) is formed on the steam delivery pipe (303) for releasing steam into the processing chamber.

3. The cleaning brush according to claim 2, characterized in that, The module body (301) has filters (305) formed on both sides of the air inlet side and / or air outlet side.

4. The cleaning brush according to any one of claims 1 to 3, characterized in that, The sterilization module (3) is detachably mounted on the housing (1).

5. The cleaning brush according to claim 4, characterized in that, Also includes: The filter module (5) is detachably mounted on the housing (1) and can be interchanged with the sterilization module (3).

6. The cleaning brush according to claim 5, characterized in that, The housing (1) has a vent (103) and a fan inlet (104) on its side wall, and the filter module (5) has a filter inlet and / or filter outlet at the position corresponding to the vent (103).

7. The cleaning brush according to any one of claims 1 to 3, characterized in that, The brush head (2) includes: A transparent mounting plate (202) is connected to the housing (1), and the hair suction port (201) is formed on the transparent mounting plate (202); The brush bristles (203) are disposed on the transparent mounting plate (202). The cleaning brush also includes an ultraviolet germicidal lamp (8) disposed on the housing (1) and capable of emitting ultraviolet light toward the transparent mounting plate (202).

8. The cleaning brush according to claim 7, characterized in that, Also includes: Handle (6), connected to the housing (1); An operating component (601) is provided on the handle (6) and is communicatively connected to the ultraviolet germicidal lamp (8), which can control the ultraviolet germicidal lamp (8) to switch between an on mode and an off mode.

9. The cleaning brush according to any one of claims 1 to 3, characterized in that, Also includes: The deodorization module (7) is located inside the housing (1) and upstream of the sterilization module (3).

10. The cleaning brush according to claim 9, characterized in that, The deodorization module (7) includes: A pre-filter is disposed inside the housing (1); The main filter or adsorbent is disposed inside the housing (1) and located downstream of the pre-filter for removing odors from the airflow.

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