An air filtration device and a coffee roaster

Abstract

This utility model discloses an air filtration device and a coffee roaster. The air filtration device includes a housing, a filter module, and a negative ion processor. The housing has a filter chamber, with an air inlet and an air outlet communicating with the filter chamber on opposite sides. The filter module is detachably installed inside the filter chamber, and the negative ion processor is connected to the filter chamber. This application facilitates replacement and maintenance through a detachable filter module. The combination of multiple filter layers and the negative ion processor enhances the filtration effect, effectively purifying the smoke, dust, and odors produced during coffee roasting, keeping the exhaust air fresh and odorless.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee processing equipment, and in particular to an air filtration device and a coffee roaster. Background Technology

[0002] The coffee roasting process generates a large amount of smoke, dust, and pungent odors. These substances not only affect the air quality of the working environment but may also pose certain health risks. Existing air filtration devices suffer from problems such as poor filtration efficiency and inconvenient filter module replacement when dealing with these pollutants. Utility Model Content

[0003] This invention aims to at least partially solve one of the problems in the related technology. Therefore, one objective of this invention is to provide an air filtration device to improve the filtration effect of the air filtration device and keep the air output from the coffee roaster fresh and odorless.

[0004] An air filtration device for a coffee roaster includes a housing, a filter module, and a negative ion processor. The housing has a filter chamber, and air inlets and outlets communicating with the filter chamber are respectively provided on opposite sides of the housing. The filter module is detachably installed inside the filter chamber, and the negative ion processor is connected to the filter chamber.

[0005] Furthermore, the filtration module includes an activated carbon filter layer, a pre-filter layer, and a HEPA filter layer arranged sequentially along the direction from the air inlet to the air outlet.

[0006] Furthermore, the top of the housing is provided with an opening for taking out and placing the filter module, and the opening is provided with an openable and closable cover.

[0007] Furthermore, the cover is connected to the box body by a hinge, and the cover is provided with a buckle structure for locking.

[0008] Furthermore, the negative ion processor is located on the outside of the housing, and the output end of the negative ion processor is connected to the filter chamber through a pipe.

[0009] Furthermore, a fan is provided at the air inlet and / or the air outlet.

[0010] Furthermore, the air outlet is circular in shape.

[0011] Furthermore, a pressure plate, a spring, and a connecting rod are provided on the inner side wall of the box. The connecting rod is connected to the inner side wall of the box, the spring is sleeved on the connecting rod, the pressure plate is connected to the connecting rod, one end of the spring is connected to the side wall of the box, and the other end abuts against the pressure plate. The pressure plate is used to abut against the filter module.

[0012] Furthermore, a limiting block is provided at the end of the connecting rod away from the pressure plate, and the limiting block abuts against the outer side wall of the box.

[0013] This utility model also proposes a coffee roaster, including a body, a roasting module and an air filter as described above. The roasting module is located in the body, and the exhaust port of the roasting module is connected to the air inlet of the air filter.

[0014] Compared with the prior art, the technical solution provided in this application has the following advantages: The air filtration device of this application, by setting a detachable filter module, facilitates the replacement and maintenance of the filter module, ensuring the durability of the filtration effect. The negative ion processor can further process the filtered air, releasing negative ions, improving air freshness, and enhancing air quality. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] In the attached image: Figure 1 This is a schematic diagram of the structure of an embodiment of the air filtration device of this application; Figure 2 This is a schematic diagram of the structure of an embodiment of the air filtration device of this application from another perspective; Figure 3 This is an exploded structural diagram of an embodiment of the air filtration device of this application; Figure 4 This is a schematic diagram of the housing structure in one embodiment of the air filtration device of this application; Figure 5 This is a top view of the housing in one embodiment of the air filtration device of this application; Figure 6 This is a schematic diagram of the structure of an embodiment of the coffee roaster of this application; Figure 7 This is a schematic diagram of the coffee roaster according to an embodiment of the present application, with the outer shell removed.

[0018] Figure label: 1. Air filtration device; 10. Housing; 11. Filter chamber; 12. Air inlet; 13. Air outlet; 14. Opening; 20. Filter module; 30. Negative ion processor; 40. Cover; 41. Hinge; 50. Snap-fit ​​structure; 60. Fan; 70. Pressure plate; 80. Spring; 90. Connecting rod; 91. Limiting block; 100. Coffee roaster; 101. Machine body; 102. Roasting module. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] like Figure 1 - Figure 5 As shown, this application provides an air filtration device 1 for a coffee roaster 100, including a housing 10, a filter module 20, and a negative ion processor 30. The housing 10 is provided with a filter chamber 11, and air inlets 12 and air outlets 13 communicating with the filter chamber 11 are respectively provided on opposite sides of the housing 10. The filter module 20 is detachably disposed in the filter chamber 11, and the negative ion processor 30 is disposed in connection with the filter chamber 11.

[0022] The housing 10 serves as the basic load-bearing structure of the device and is generally made of metal (such as stainless steel, which has good corrosion resistance and strength) or high-strength plastic (such as ABS plastic, which is lightweight and easy to process), forming a filter chamber 11 inside for air filtration.

[0023] The filter module 20 is a detachable modular structure. Its specific composition can be customized with different filter material combinations to meet various filtration needs, commonly including activated carbon, HEPA filters, and pre-filters. The filter module 20 can be detachably connected via bolts, snap-fit ​​connections, or slide rail connections, allowing users to easily replace or clean the filter module as needed, ensuring optimal filtration performance. For threaded connections, the housing 10 has threaded holes matching the filter module 20, and the filter module 20 has external threads; connection or disassembly is achieved by rotating the filter module 20. For snap-fit ​​connections, the housing 10 has snap-fit ​​seats, and the filter module 20 has snap-fits that match the seats; connection or disassembly is achieved by pressing or pulling the snap-fits. For slide rail connections, the housing 10 has internal slide rails, and the filter module 20 has grooves that match the slide rails; connection or disassembly is achieved by sliding the filter module 20. This detachable design not only facilitates filter module replacement and maintenance but also enhances the practicality and flexibility of the air filtration system.

[0024] The negative ion processor 30 is an electronic device in air purification equipment. It is usually composed of core components such as a negative ion generator and can generate and release negative ions.

[0025] The housing 10 serves as the carrier of the entire device, and its internal filter chamber 11 is the main site for air purification. The air inlet 12 and air outlet 13 are respectively located on opposite sides of the housing 10 and communicate with the filter chamber 11, forming an airflow path that allows the air requiring purification to enter the filter chamber 11 and be discharged after purification. The filter module 20 is detachably installed inside the filter chamber 11, a design that facilitates subsequent maintenance and replacement. The negative ion processor 30 is connected to the filter chamber 11, further optimizing the air after it has been processed by the filter module 20.

[0026] From an overall structural perspective, this design provides a stable operating environment for air purification, ensuring that air flows along a preset path and guaranteeing the orderly progress of the purification process. The detachable filter module 20 greatly simplifies the replacement and maintenance process, allowing users to easily complete tasks without complex operations. This avoids the problem of decreased filtration efficiency due to long-term clogging of the filter module 20, thus ensuring the durability of the filtration effect. The addition of the negative ion processor 30, in addition to removing air impurities through the filter module 20, further releases negative ions. These negative ions react with harmful substances in the air, purifying it and enhancing its freshness. This makes the exhaust air more comfortable and pleasant, effectively improving the surrounding air quality. It is especially suitable for scenarios like the coffee roaster 100, which produces more odors and impurities, ensuring that the air exhausted from the coffee roaster 100 is fresh and odorless.

[0027] Furthermore, the filtration module 20 includes an activated carbon filter layer, a pre-filter layer, and a HEPA filter layer arranged sequentially along the direction from the air inlet 12 to the air outlet 13.

[0028] Activated carbon filters are typically composed of activated carbon granules or fibers. Activated carbon has a rich porous structure, effectively adsorbing odors and organic gases from the air. Pre-filters often use non-woven fabrics, nylon mesh, or similar materials, primarily used to filter larger particles such as dust and hair. HEPA filters are made of materials such as ultra-fine glass fibers and have a high filtration efficiency for particles larger than 0.3 micrometers in diameter, effectively removing fine particulate matter.

[0029] Furthermore, the top of the housing 10 is provided with an opening 14 for taking out and placing the filter module 20, and the opening 14 is provided with an openable and closable cover 40.

[0030] The opening 14 is located on the top of the housing 10 and its shape is usually adapted to the shape of the filter module 20, generally rectangular or square, to facilitate the placement and removal of the filter module 20. The cover 40 is a plate-like structure that matches the opening 14 and is usually made of the same material as the housing 10, such as metal or plastic, and can cover the opening 14 to ensure the airtightness of the filter chamber 11.

[0031] From an operational convenience perspective, the opening 14 on top of the housing 10 allows users to easily access and remove the filter module 20 without bending over or performing complex operations, greatly simplifying the filter module 20 replacement process and saving replacement time and effort. This is especially beneficial for scenarios requiring frequent filter module 20 replacements, effectively improving maintenance efficiency. The cover 40 ensures the airtightness of the filter chamber 11 during the operation of the air filtration device 1, preventing unfiltered air from leaking through the opening 14. This ensures that all air entering the filter chamber 11 undergoes a complete filtration process, thereby guaranteeing the stability of the filtration effect. Simultaneously, the cover 40 prevents external dust and impurities from entering the filter chamber 11, avoiding contamination of the filter module 20 and extending its service life.

[0032] Furthermore, the cover 40 is connected to the box 10 via a hinge 41, and the cover 40 is provided with a latch structure 50 for locking.

[0033] The hinge 41 is generally a hinge-type hinge 41, consisting of two metal blades and a pin, allowing the cover 40 to rotate around the pin, thus opening and closing the cover 40. The latching structure 50 includes a hook on the cover 40 and a corresponding slot on the housing 10. The hook usually has a certain degree of elasticity and can tightly engage with the slot to achieve a locking effect. The cover 40 and the housing 10 are connected by the hinge 41, and the cover 40 is provided with the latching structure 50 for locking. The hinge 41 provides a stable rotation axis for the opening and closing of the cover 40, allowing the cover 40 to be easily opened and closed, with flexible and convenient operation. The latching structure 50 functions when the cover 40 is closed, using the engagement of the hook and the slot to firmly fix the cover 40 to the housing 10, ensuring that the cover 40 cannot be easily opened.

[0034] The hinge 41 connection makes the opening and closing of the cover 40 smoother. Users only need to apply a little force to open and close the cover 40, reducing the difficulty of operation, especially for users with less strength. The locking function of the snap-fit ​​structure 50 further enhances the sealing of the device. When the air filtration device 1 is running, it can effectively prevent air leakage from the gap between the cover 40 and the housing 10, ensuring the effectiveness of the filtration process. At the same time, the locking and unlocking operation of the snap-fit ​​structure 50 is simple and quick. When the filter module 20 needs to be replaced, the cover 40 can be opened by gently pulling the hook. After replacement, the cover 40 can be closed and locked with the snap-fit. This ensures both sealing and ease of operation, making the entire device more convenient and reliable to use.

[0035] Furthermore, the cover 40 is also equipped with a handle. This handle is a rod-shaped or curved structure designed for easy gripping by the user. Made of the same material as the cover 40, it is typically located on the outer edge of the cover 40, facilitating the application of force when opening or closing it. The handle further enhances the ease of operation, allowing users to open or close the cover 40 more easily, especially for users with less strength or limited hand strength. Simultaneously, the shape and position of the handle are designed with ergonomic principles in mind, ensuring a comfortable grip and application of force during use, preventing hand fatigue or injury caused by improper operation. In addition, the surface of the handle can be treated with an anti-slip finish, such as anti-slip textures or anti-slip materials, to improve stability and safety when gripping.

[0036] Furthermore, the negative ion processor 30 is located on the outside of the housing 10, and the output end of the negative ion processor 30 is connected to the filter chamber 11 through a pipe.

[0037] Negative ion processors 30 commonly include open-type and closed-type negative ion generators. Their core components include a high-voltage generator and a discharge needle, which can generate negative ions. The pipes are generally made of plastic (such as PVC pipes) or metal pipes, which have a certain degree of rigidity and sealing, and are used to transport the negative ions generated by the negative ion processor 30 to the filter chamber 11.

[0038] The negative ion processor 30 is located on the outside of the housing 10, and its output end is connected to the filter chamber 11 via a pipe. Placing the negative ion processor 30 on the outside of the housing 10 avoids occupying space within the filter chamber 11, allowing for a more flexible structural design. The pipe connection ensures that the negative ions generated by the negative ion processor 30 are accurately delivered to the filter chamber 11, ensuring full contact with the filtered air. From an installation and maintenance perspective, the location of the negative ion processor 30 on the outside of the housing 10 simplifies the installation process, eliminating the need for complex installation operations within the filter chamber 11. When the negative ion processor 30 malfunctions and requires repair or replacement, it is not necessary to disassemble the housing 10 or remove the filter module 20, greatly simplifying the maintenance process and saving maintenance costs and time. Delivering negative ions to the filter chamber 11 via the pipe ensures thorough mixing between the negative ions and the filtered air. The negative ions neutralize the positive charge in the air, causing particulate matter to agglomerate and settle, further improving air cleanliness. Simultaneously, the negative ions also make the air fresher, enhancing human comfort. In addition, this setup will not interfere with the operation of the filter module 20, ensuring that the filtration and negative ion purification processes proceed in an orderly manner, thus jointly improving the air purification effect.

[0039] Furthermore, a fan 60 is provided at the air inlet 12 and / or the air outlet 13.

[0040] Common types of fans 60 include axial flow fans 60 and centrifugal fans 60. Axial flow fans 60 are suitable for applications requiring large air volumes, while centrifugal fans 60 have higher air pressure and can overcome greater air resistance.

[0041] As a power device, the fan 60 generates airflow. When installed at the air inlet 12, it draws in external air requiring purification into the filter chamber 11; when installed at the air outlet 13, it extracts purified air from the filter chamber 11. When the fan 60 is installed at both the air inlet 12 and the air outlet 13, it creates even stronger airflow. The fan 60 effectively accelerates the airflow speed within the filter chamber 11, shortening the residence time of air within the filter chamber 11, thereby increasing the air handling capacity per unit time and improving the filtration efficiency of the air filtration device 1. During the coffee roasting process, a large amount of pollutants are continuously generated. The presence of the fan 60 allows these pollutants to be drawn into the filter device for purification in a timely manner, preventing the accumulation of pollutants in the surrounding environment. Simultaneously, accelerating airflow ensures sufficient contact between the air and the filter module 20, improving the adsorption and filtration efficiency of the filter module 20 for pollutants, ensuring that more pollutants are effectively removed. Furthermore, in environments with large spaces or poor air circulation, the effect of the fan 60 is even more pronounced, ensuring the rapid diffusion of filtered clean air and improving the overall air quality.

[0042] Furthermore, the air outlet 13 is circular in shape.

[0043] The air outlet 13 has a circular opening 14 structure with smoothed edges, and can be made of the same material as the housing 10, such as metal or plastic. The circle is a structurally stable shape with low fluid resistance. During air exhaust, the circular air outlet 13 allows air to flow out more smoothly, reducing eddies and resistance at the outlet.

[0044] From an aerodynamic perspective, the circular shape reduces air resistance during exhaust, improving exhaust efficiency and ensuring that purified air exits the filter quickly and smoothly, minimizing stagnation within the device. Simultaneously, the circular outlet 13 provides a relatively uniform airflow distribution, allowing clean air to diffuse more evenly into the surrounding environment and preventing significant localized differences in air cleanliness. Furthermore, the circular structure is relatively simple to manufacture, facilitating processing and installation, reducing production costs, and also making connections between the outlet 13 and other components such as ducts easier and tighter, ensuring a tight seal during air exhaust.

[0045] Furthermore, a pressure plate 70, a spring 80, and a connecting rod 90 are provided on the inner side wall of the housing 10. The connecting rod 90 is connected to the inner side wall of the housing 10, the spring 80 is sleeved on the connecting rod 90, the pressure plate 70 is connected to the connecting rod 90, one end of the spring 80 is connected to the side wall of the housing 10, and the other end abuts against the pressure plate 70. The pressure plate 70 is used to abut against the filter module 20.

[0046] The pressure plate 70 is generally a plate-like structure, made of metal or rigid plastic, and its dimensions are adapted to the side of the filter module 20 to ensure full contact with it. The spring 80 is a compression spring, usually made of spring steel, possessing good elasticity and toughness. It can undergo elastic deformation under pressure and return to its original shape after the pressure is released. The connecting rod 90 is mostly a cylindrical rod-like structure, made of metal (such as stainless steel), possessing a certain strength, used to connect the housing 10 and the pressure plate 70, and to provide support for the spring 80.

[0047] A connecting rod 90 is connected to the inner wall of the housing 10. A spring 80 is sleeved on the connecting rod 90, and a pressure plate 70 is connected to the connecting rod 90. One end of the spring 80 is connected to the side wall of the housing 10, and the other end abuts against the pressure plate 70, which holds the filter module 20. When the filter module 20 is placed into the filter chamber 11, the spring 80 is compressed and pushes the pressure plate 70 tightly against the filter module 20 through its own elasticity, thereby fixing the filter module 20 in the filter chamber 11. This provides a stable fixation for the filter module 20. During the operation of the air filtration device 1, no matter how much impact the airflow generates or how slight the device is vibrated, the filter module 20 remains stable under the support of the pressure plate 70, without shaking or displacement, ensuring that the filter module 20 is always in full contact with the air and guaranteeing the stability of the filtration effect. Secondly, when replacing the filter module 20, simply pull the pressure plate 70 outwards, and the spring 80 will further compress, allowing the old filter module 20 to be easily removed. After inserting the new filter module 20, release the pressure plate 70; the elastic force of the spring 80 will automatically push the pressure plate 70 back to hold the filter module 20. The entire replacement process is simple and convenient, requiring no additional tools, greatly improving replacement efficiency. Furthermore, the elasticity of the spring 80 allows this structure to adapt to filter modules 20 of different thicknesses or sizes, providing a degree of versatility and expanding the applicability of the air filtration device 1.

[0048] Furthermore, a limiting block 91 is provided at one end of the connecting rod 90 away from the pressure plate 70, and the limiting block 91 abuts against the outer side wall of the housing 10.

[0049] The limiting block 91 is typically a block-shaped structure, which can be integrally formed with the connecting rod 90 or fixed to the connecting rod 90 by means of threaded connection, etc. The material is the same as that of the connecting rod 90, such as stainless steel, and has a certain strength and stability. The setting of the limiting block 91 restricts the position of the connecting rod 90, preventing the connecting rod 90 from moving into the filter chamber 11 under the elastic force of the spring 80 or other external forces, ensuring a more stable connection between the connecting rod 90 and the housing 10.

[0050] The limiting block 91 effectively prevents the connecting rod 90 from detaching from the inner wall of the housing 10, ensuring the stability of the entire structure of the pressure plate 70, spring 80, and connecting rod 90. During the repeated extension and retraction of the spring 80, the connecting rod 90 is subjected to a certain axial force. The limiting block 91, abutting against the outer wall of the housing 10, can counteract this axial force, preventing the connecting rod 90 from loosening or detaching from the housing 10. This ensures that the pressure plate 70 can always maintain an effective supporting effect on the filter module 20, guaranteeing the stability of the filter module 20. At the same time, the presence of the limiting block 91 also makes the installation of the entire structure more convenient. During installation, the installation position of the connecting rod 90 can be determined by the limiting block 91, ensuring more precise matching between components and improving the overall reliability of the device.

[0051] This utility model also proposes a coffee roaster 100, such as Figure 6 , Figure 7 As shown, the coffee roaster 100 includes a body 101, a roasting module 102, and an air filter 1 as described above. The exhaust port of the roasting module 102 is connected to the air inlet 12 of the air filter 1. The specific structure of the air filter 1 is as described in the above embodiments. Since this coffee roaster 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0052] The main body 101, serving as the frame of the coffee roaster 100, is typically made of metal or high-strength plastic and supports and houses components such as the roasting module 102 and the air filter 1. The roasting module 102 includes a roasting chamber, a heating device, and a stirring device. The roasting chamber holds the coffee beans, the heating device provides the heat required for roasting, and the stirring device ensures even heating of the coffee beans. This connection method allows the exhaust gases containing smoke, dust, and odors generated during the roasting process of the roasting module 102 to directly enter the air filter 1 for purification.

[0053] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. An air filtration device for a coffee roaster, characterized in that, The device includes a housing, a filter module, and a negative ion processor. The housing has a filter chamber, and air inlets and outlets communicating with the filter chamber are respectively provided on opposite sides of the housing. The filter module is detachably installed inside the filter chamber, and the negative ion processor is connected to the filter chamber.

2. An air filtration device according to claim 1, characterized in that, The filtration module includes an activated carbon filter layer, a pre-filter layer, and a HEPA filter layer arranged sequentially along the direction from the air inlet to the air outlet.

3. An air filtration device according to claim 1, characterized in that, The top of the housing is provided with an opening for taking out and placing the filter module, and the opening is provided with an openable and closable cover.

4. An air filtration device according to claim 3, characterized in that, The cover is connected to the box body by a hinge, and the cover is provided with a buckle structure for locking.

5. An air filtration device according to claim 1, characterized in that, The negative ion processor is located on the outside of the housing, and the output end of the negative ion processor is connected to the filter chamber through a pipe.

6. An air filtration device according to claim 1, characterized in that, A fan is provided at the air inlet and / or the air outlet.

7. An air filtration device according to claim 1 or 6, characterized in that, The air outlet is circular in shape.

8. An air filtration device according to claim 1, characterized in that, A pressure plate, a spring, and a connecting rod are provided on the inner side wall of the housing. The connecting rod is connected to the inner side wall of the housing. The spring is sleeved on the connecting rod. The pressure plate is connected to the connecting rod. One end of the spring is connected to the side wall of the housing, and the other end abuts against the pressure plate. The pressure plate is used to abut against the filter module.

9. An air filtration device according to claim 8, characterized in that, The end of the connecting rod away from the pressure plate is provided with a limiting block, which abuts against the outer side wall of the box.

10. A coffee roaster, characterized in that, The device includes a body, a roasting module, and an air filtration device as described in any one of claims 1-9, wherein the roasting module is disposed within the body, and the exhaust port of the roasting module is connected to the air inlet of the air filtration device.

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