A charcoal pen capable of treating flue gas

Abstract

The application relates to a pyrograph pen capable of treating smoke. The device comprises a pen body, a cooling assembly, a filtering assembly and an end cover. The pen body is divided into a working cavity and a filtering cavity. A plurality of smoke channels are arranged in the side wall of the working cavity in the vertical direction. One end of the smoke channel corresponds to a pen tip, and the other end is connected to the filtering cavity. The cooling assembly and the filtering assembly are stacked and installed in the filtering cavity, and the filtering assembly is located above the cooling assembly. The end cover is threadedly connected to the top of the pen body. An exhaust hole is formed in the end cover, and a micro fan corresponding to the exhaust hole is fixed to the end cover. The micro fan can form a negative pressure in the filtering cavity, so that the smoke is sucked into the filtering cavity from the smoke channels, and the smoke sequentially passes through the cooling assembly and the filtering assembly and is discharged from the exhaust hole. The scheme provided by the application can purify the pyrograph smoke, reduce the concentration of harmful substances in the smoke, and relieve the adverse effects of the smoke on the operator.

Description

Technical Field

[0001] This application relates to the field of pyrography tools, and more particularly to a pyrography pen capable of handling fumes. Background Technology

[0002] A pyrography pen is a specialized tool used for pyrography creation. It works by using a high-temperature pen tip to burn patterns or text onto the surface of materials such as gourds, bamboo, wood, and Xuan paper. Traditional pyrography pens were mostly handmade and required the use of tools such as a voltage regulator. With technological advancements, modern pyrography pens feature replaceable nibs and adjustable heating elements, allowing for quick replacement of different nib shapes and precise temperature adjustment to improve ease of use and the quality of the pyrography results.

[0003] During the pyrography process, fumes are inevitably produced when the hot pen tip comes into contact with the material. The fumes are mainly produced by the thermal decomposition of the material and contain volatile organic compounds and fine particulate matter. They not only affect the operator's vision but also easily irritate the operator's respiratory system. Long-term inhalation can cause damage to health.

[0004] Currently, the best way to deal with pyrography fumes is to equip a small exhaust device to directly extract the fumes to the outside for purification before releasing them. However, this method requires specialized smoke extraction equipment, ventilation ducts, and purification systems, which is costly and has a fixed location, and is only suitable for professional studios or mass production sites.

[0005] Because the fumes produced by pyrography are intermittent and limited in total amount, in some small studios or personal creative settings, the common approach is to create pyrography in an open or semi-open space, disperse the fumes through natural ventilation or by using fans, and wear masks to reduce the impact of the fumes. This method is simple, convenient, and inexpensive, but it does not substantially treat the fumes. It only relies on diffusion and dilution, which cannot effectively purify the harmful substances in the fumes and still poses health risks. Utility Model Content

[0006] To address or partially address the problems existing in related technologies, this application provides a pyrography pen capable of processing fumes. This device can purify pyrography fumes, reduce the concentration of harmful substances in the fumes, and mitigate the impact of the fumes.

[0007] This application provides a pyrography pen capable of handling fumes, comprising: The pen body is a tubular structure with a partition inside, dividing the pen body into a working chamber and a filtering chamber. A heating element for heating the pen tip is installed in the working chamber. Several smoke channels are arranged vertically along the inner side wall of the working chamber, with one end of the smoke channel corresponding to the pen tip and the other end connected to the filtering chamber. A cooling assembly is installed at the bottom of the filter chamber and includes an inner core and an outer shell. The inner core has a cylindrical structure and several airflow grooves are evenly arranged along the edge of the inner core. The inner core is detachably installed in the outer shell so that a cooling channel can be formed between the inner core and the outer shell. The filter assembly is installed inside the filter chamber and is located above the cooling assembly. It includes a filter box and a box cover. The bottom of the filter box has a first air hole evenly opened, and the filter box is filled with activated carbon. The top of the filter box is connected to the box cover by threads, and the box cover has a second air hole opened. End cap, which is threaded to the top of the pen body and has an exhaust hole. A miniature fan corresponding to the exhaust hole is also fixed to the end cap. The micro fan creates negative pressure inside the filter chamber, drawing the flue gas from the flue gas channel into the filter chamber. The flue gas then passes through the cooling component and the filter component in sequence before being discharged from the exhaust port.

[0008] Optionally, in some embodiments, the activated carbon is columnar activated carbon, which is placed along the axial direction of the filter box, so that natural adsorption channels are formed between adjacent activated carbon.

[0009] Optionally, in some embodiments, a clamping assembly for fixing the position of the cooling assembly and the filter assembly is installed on the inner side of the end cover. The clamping assembly includes a telescopic guide rod, a pressure plate, and a spring. The telescopic guide rod is fixedly installed vertically on the inner side of the end cover, and a pressure plate is fixedly connected to the end of the telescopic guide rod. A spring is also sleeved on the outer side of the telescopic guide rod.

[0010] Optionally, in some embodiments, a limiting protrusion is provided in the filter chamber, and the cooling component and the filter component are stacked in the filter chamber. One side of the cooling component is snapped into the limiting protrusion, and the other side of the filter component is pressed by a clamping component, thereby fixing the position of the cooling component and the filter component.

[0011] Optionally, in some embodiments, a first sealing ring is provided between the cooling component and the limiting protrusion, and a second sealing ring is provided between the cooling component and the filter component.

[0012] Optionally, in some embodiments, the outer shell includes a first shell and a second shell, both of which are tubular structures, and the outer diameters of the first shell and the second shell match the inner diameter of the filter chamber. The first shell and the second shell are connected by threads to form an outer shell, and an inner core is placed inside the outer shell.

[0013] Optionally, in some embodiments, a first limiting ring is provided at the end of the first housing and a second limiting ring is provided at the end of the second housing. The diameters of the first limiting ring and the second limiting ring are both smaller than the outer diameter of the inner core. The first limiting ring and the second limiting ring are respectively engaged with the two ends of the inner core to fix the inner core.

[0014] Optionally, in some embodiments, both the inner core and the outer shell are made of a thermally conductive alloy material.

[0015] The technical solution provided in this application may include the following beneficial effects: This application utilizes the unused space at the tail end of the pyrography pen to set up a flue gas treatment structure consisting of a cooling component and a filter component. This structure promptly draws the flue gas into the filter chamber, reducing the interference of the flue gas with the operator's vision. Furthermore, the flue gas treatment structure purifies the flue gas, reducing the concentration of harmful substances in the flue gas and mitigating the impact of the flue gas on the operator's health.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a cross-sectional view of the overall structure of this application; Figure 3 This is a partial exploded view of the structure of this application; Figure 4 This is a schematic diagram of the cooling assembly of this application; Figure 5 This is a schematic diagram of the structure of the filtering component in this application; Figure 6 This is a schematic diagram of the clamping assembly of this application.

[0019] Figure label: 1-Pen body, 11-Smoke channel, 111-Intake port, 112-Outlet port, 12-Baffle, 13-Limiting protrusion, 14-Working chamber, 15-Filter chamber; 2-Pen tip, 21-Heating element; 3-End cap, 31-Exhaust port; 4-Miniature fan; 5-Cooling assembly, 51-Inner core, 52-Airflow groove, 53-First housing, 54-First limiting ring, 55-Second housing, 56-Second limiting ring; 6-Filter assembly, 61-Filter box, 62-First air hole, 63-Box cover, 64-Second air hole, 65-Activated carbon; 7-Pressure assembly, 71-Telescopic guide rod, 72-Pressure plate, 73-Spring; 8-First sealing ring; 9-Second sealing ring. Detailed Implementation

[0020] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0021] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] See Figure 2 First, it should be noted that the core structure of most commercially available pyrography pens is concentrated in the front section of the pen body 1, including the replaceable pen tip 2, the heating element 21 for heating the pen tip, and the conductive cable connected to the heating element 21. The middle and rear sections of the pen body 1 are mostly unused space. The slender design of the pen body 1 is mainly to improve grip comfort and aesthetics. The structure and usage of the pen tip 2 and the heating element 21 are well known to those skilled in the art and are not the focus of this application, so they will not be described in detail here.

[0025] See Figures 1 to 3 A pyrography pen capable of handling fumes, comprising: The pen body 1 is a tubular structure made of high-temperature resistant material. It has a partition 12 inside, which divides the pen body 1 into a working chamber 14 and a filter chamber 15. The working chamber 14 is used to install a heating element 21, which can heat the pen tip 2 to facilitate pyrography. Several smoke channels 11 are arranged vertically in the side wall of the working chamber 14. The smoke channels 11 are evenly distributed around the circumference of the pen body 1, and the number of them is usually 4-8. One end of the smoke channel 11 is located at the end of the pen body 1, corresponding to the position of the pen tip 2, and serves as an air intake 111. The other end is connected to the filter chamber 15 to guide the smoke generated at the position of the pen tip 2 during the pyrography process into the filter chamber 15 for treatment, and serves as an air outlet 112.

[0026] Cooling assembly 5 and filter assembly 6, see Figure 2 The cooling component 5 and the filter component 6 are stacked inside the filter chamber 15, with the cooling component 5 located below the filter component 6. This allows the flue gas to be cooled by the cooling component 5 before entering the filter chamber 15 for purification, thus preventing the high-temperature flue gas from directly contacting the filter material and causing it to age or fail. Furthermore, when creating pyrography works, the operator typically holds the pyrography pen in the middle of the pen body 1, which is also where the cooling component 5 is located. The cooling component 5 reduces the temperature of the holding area, improving user comfort.

[0027] See Figure 4The cooling assembly 5 includes an inner core 51 and an outer shell. Both the inner core 51 and the outer shell are made of a metal material with good thermal conductivity, such as aluminum alloy or copper, to facilitate heat exchange with the high-temperature flue gas, thereby reducing the flue gas temperature. The inner core 51 has a cylindrical structure, and several airflow grooves 52 are evenly arranged along the edge of the inner core 51. The number of airflow grooves 52 is usually 3-6. The inner core 51 is detachably installed in the outer shell, so that a cooling channel can be formed between the inner core 51 and the outer shell. In use, after the flue gas enters the filter chamber 15 from the flue gas channel 11, it can pass through the cooling assembly 5 through each cooling channel. During this process, the high-temperature flue gas exchanges heat with the inner core and the outer shell, thereby reducing the flue gas temperature, and then enters the filter assembly 6 for purification. Furthermore, in order to make the flue gas stay in the cooling channel for a longer time to improve the cooling effect, the airflow grooves 52 can be designed with a wave-shaped structure to extend the airflow path and improve the cooling effect. Furthermore, since the fumes generated during the pyrography process are intermittent, the cooling component 5 can operate continuously as long as the airflow is kept constant during the use of the pyrography pen. The principle is as follows: when the high-temperature fumes generated during pyrography pass through the cooling component, they exchange heat with the inner core 51 and the outer shell, causing the temperature of the inner core 51 and the outer shell to gradually increase. During the intervals between pyrography sessions, the fumes decrease, and the external air drawn in at this time is at a lower temperature. When it flows through the cooling component, it absorbs the heat from the inner core 51 and the outer shell, achieving a heat dissipation effect and realizing the self-circulating cooling of the cooling component.

[0028] Because some volatile substances will recondense and adhere to the airflow channel 52 or the side wall of the outer casing when passing through the cooling component 5 due to the temperature drop, they are prone to forming scale over time. This not only affects the cooling effect but may also block the cooling channel, requiring regular cleaning of the cooling component 5. Therefore, in this application, the cooling component 5 is designed as a detachable structure, which is convenient for users to remove and clean regularly. Specifically, the outer casing includes a first shell 53 and a second shell 55. Both the first shell 53 and the second shell 55 are tubular structures, and the outer diameters of the first shell 53 and the second shell 55 match the inner diameter of the filter chamber 15. This prevents the outer casing from shaking or misaligning within the filter chamber, which could cause short-circuiting of the flue gas and ensure that all the flue gas flows through the cooling channel. The first housing 53 and the second housing 55 are connected by threads to form an outer shell. A first limiting ring 54 is provided at the end of the first housing 53, and a second limiting ring 56 is provided at the end of the second housing 55. The diameters of both the first limiting ring 54 and the second limiting ring 56 are smaller than the outer diameter of the inner core 51, so that the first limiting ring 54 and the second limiting ring 56 can be respectively engaged with the two ends of the inner core 51 to fix the inner core 51. When cleaning is required, simply unscrew the first housing 53 and the second housing 55 to remove the inner core 51 for cleaning.

[0029] See Figure 5The filter assembly 6 is installed inside the filter chamber 15, above the cooling assembly 5. It includes a filter box 61 and a cover 63. The filter box 61 has a cylindrical structure with first air holes 62 evenly distributed at its bottom and a cover 63 threaded to its top. The cover 63 has second air holes 64. Activated carbon 65 is placed inside the filter box 61. During use, flue gas exiting the cooling assembly 5 enters the filter box 61 through the first air holes 62. After being adsorbed by the activated carbon 65, harmful substances are absorbed and the flue gas exits through the second air holes 64. Furthermore, to ensure smooth passage of the flue gas through the activated carbon layer, columnar activated carbon 65 is used. During use, the columnar activated carbon 65 is placed along the axial direction of the filter box 61, filling the entire filter box 61. This creates natural adsorption channels between adjacent activated carbon particles, reducing airflow resistance and preventing the flue gas from being blocked by the activated carbon layer. Furthermore, to ensure that all the flue gas passes through the activated carbon layer, the outer diameter of the filter box 61 matches the inner diameter of the filter chamber 15, and a second sealing ring 9 is provided between the filter box 61 and the outer shell to ensure that all the flue gas enters the filter box 61 after passing through the cooling component 5 to participate in the purification process and avoid airflow short circuit.

[0030] End cap 3, see Figure 6 The end cap 3 is threaded to the top of the pen body 1, and has an exhaust port 31. A miniature fan 4 corresponding to the exhaust port 31 is also fixed to the end cap 3. The miniature fan 4 creates a negative pressure in the filter chamber 15, drawing smoke from the smoke channel 11 into the filter chamber 15, and then passing the smoke through the cooling component 5 and the filter component 6 before being discharged from the exhaust port 31. It should be noted that the structure and control circuit of the miniature fan 4 are existing technologies and will not be described in detail here.

[0031] Since the cooling component 5 and the filter component 6, once placed inside the filter cavity 15, are prone to shifting along the axial direction of the pen body 1 if not secured, causing smoke to leak from the gaps and affecting the cooling and filtering effects, a clamping component 7 is installed inside the end cap 3. The clamping component 7 applies axial pressure to the cooling component 5 and the filter component 6 to ensure they are securely positioned within the filter cavity 15. Specifically, a limiting protrusion 13 is provided at the bottom of the filter cavity 15 of the pen body 1. The cooling component 5 and the filter component 6 are stacked inside the filter cavity 15, with one side of the cooling component 5 engaged with the limiting protrusion 13, and a first sealing ring 8 is provided between the outer shell of the cooling component 5 and the limiting protrusion 13. The filter component 6 is clamped on one side by the clamping component 7. The clamping assembly 7 includes a telescopic guide rod 71, a pressure plate 72, and a spring 73. The telescopic guide rod 71 is fixedly installed vertically on the inner side of the end cap 3, and the pressure plate 72 is fixedly connected to the end of the telescopic guide rod 71. The spring 73 is also sleeved on the outer side of the telescopic guide rod 71. Under normal conditions, the spring 73 is in a naturally extended state, and the telescopic guide rod 71 is in an extended state under the elastic force of the spring 73. When the end cap 3 is screwed into the pen body 1, the pressure plate 72 contacts the box cover 63. As the end cap 3 is continuously tightened, the pressure plate 72 is compressed by the reaction force of the box cover 63, and the telescopic guide rod 71 retracts accordingly until the end cap 3 is fully tightened. At this time, the spring 73 is in a compressed state and continuously applies downward pressure to the box cover 63 under the elastic force. This, together with the limiting protrusion 13, achieves clamping and positioning of both ends of the filter assembly 6 and the cooling assembly 5.

[0032] Specific work process: When creating a pyrography artwork, first turn on the miniature fan 4 to create negative pressure in the filter chamber 15. When the pen tip 2 comes into contact with the material and produces smoke, the smoke enters the smoke channel 11 from the intake port 111 under the negative pressure, and then enters the filter chamber 15 from the exhaust port 112. It passes through the cooling component 5 and the filter component 6 in sequence to cool and purify the smoke, and finally it is discharged from the exhaust port 31. This method is suitable for use in open or semi-open environments to reduce the adverse effects of smoke on the operator.

[0033] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0034] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pyrography pen capable of handling fumes, characterized in that, include: The pen body is a tubular structure with a partition inside, dividing the pen body into a working chamber and a filtering chamber. A heating element for heating the pen tip is installed in the working chamber. Several smoke channels are arranged vertically along the inner side wall of the working chamber, with one end of the smoke channel corresponding to the pen tip and the other end connected to the filtering chamber. A cooling assembly is installed at the bottom of the filter chamber and includes an inner core and an outer shell. The inner core has a cylindrical structure and several airflow grooves are evenly arranged along the edge of the inner core. The inner core is detachably installed in the outer shell so that a cooling channel can be formed between the inner core and the outer shell. The filter assembly is installed inside the filter chamber and is located above the cooling assembly. It includes a filter box and a box cover. The bottom of the filter box has a first air hole evenly opened, and the filter box is filled with activated carbon. The top of the filter box is connected to the box cover by threads, and the box cover has a second air hole opened. The end cap is threaded to the top of the pen body and has an exhaust hole. A miniature fan corresponding to the exhaust hole is also fixed to the end cap. The micro fan creates negative pressure inside the filter chamber, drawing the flue gas from the flue gas channel into the filter chamber. The flue gas then passes through the cooling component and the filter component in sequence before being discharged from the exhaust port.

2. The pyrography pen capable of handling fumes according to claim 1, characterized in that: The activated carbon is columnar activated carbon, and it is placed along the axial direction of the filter box, so that natural adsorption channels are formed between adjacent activated carbon.

3. The pyrography pen capable of handling fumes according to claim 1, characterized in that: The end cap is equipped with a clamping assembly for fixing the position of the cooling assembly and the filter assembly. The clamping assembly includes a telescopic guide rod, a pressure plate, and a spring. The telescopic guide rod is fixedly installed vertically on the inside of the end cap, and a pressure plate is fixedly connected to the end of the telescopic guide rod. A spring is also sleeved on the outside of the telescopic guide rod.

4. The pyrography pen capable of handling fumes according to claim 3, characterized in that: The filter chamber is provided with a limiting protrusion. The cooling component and the filter component are stacked in the filter chamber. One side of the cooling component is snapped into the limiting protrusion, and the other side of the filter component is pressed by the clamping component, thereby fixing the position of the cooling component and the filter component.

5. The pyrography pen capable of handling fumes according to claim 4, characterized in that: A first sealing ring is placed between the cooling component and the limiting protrusion, and a second sealing ring is placed between the cooling component and the filter component.

6. The pyrography pen capable of handling fumes according to claim 1, characterized in that: The outer shell includes a first shell and a second shell, both of which are tubular structures. The outer diameters of the first shell and the second shell match the inner diameter of the filter chamber. The first shell and the second shell are connected by threads to form the outer shell, and an inner core is placed inside the outer shell.

7. The pyrography pen capable of handling fumes according to claim 6, characterized in that: The first housing end is provided with a first limiting ring, and the second housing end is provided with a second limiting ring. The diameters of the first limiting ring and the second limiting ring are both smaller than the outer diameter of the inner core. The first limiting ring and the second limiting ring are respectively engaged with the two ends of the inner core, thereby fixing the inner core.

8. The pyrography pen capable of handling fumes according to claim 7, characterized in that: Both the inner core and the outer shell are made of thermally conductive alloy material.

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