Heating device and electronic hookah
The dual-inlet heating device design solves the problems of uneven heating and safety hazards, achieving uniform heating and convenient cleaning of tobacco products, and improving the taste and safety of smoke.
Patent Information
- Application Number
- CN202511351414.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2025-11-18
AI Technical Summary
Existing heating devices suffer from problems such as unstable temperature, uneven heating, safety hazards, and inconvenience when heating tobacco products. In particular, charcoal roasting methods are prone to causing the tobacco to scorch and burn, and are cumbersome to operate. Electronic heating devices have low heating efficiency and are difficult to clean.
It adopts a dual air inlet design, introducing ambient temperature and heated air through the first and second air inlets respectively, and setting up an electric heating unit in the second air inlet for heating. After mixing, the air in the smoke chamber is indirectly heated to avoid excessive temperature. Combined with temperature control elements and insulation components, temperature stability and safety are ensured.
It achieves uniform heating of the smoke, improves the taste and volatile volume of the smoke, simplifies the cleaning process, and enhances the user experience and safety.
Smart Images
Figure CN120959469A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electronic heating technology, and more specifically, to a heating device and an electronic hookah. Background Technology
[0002] Hookah is a device that atomizes tobacco products and filters the smoke through water or other liquids for inhalation. Tobacco products suitable for hookah are typically solid or semi-solid aerosol bases, such as tobacco paste, which generally have little to no fluidity. Currently, atomization of these aerosol bases is generally achieved by heating with charcoal.
[0003] Charcoal heating is problematic because the temperature is uncontrollable and cannot be maintained at a stable level. This can lead to issues such as burning due to excessively high temperatures or insufficient gas flow, resulting in poor taste. Furthermore, incomplete combustion during charcoal roasting can release harmful substances like carbon monoxide, polluting the smoke. The method also requires frequent charcoal replacement, causing ash to fall and contaminate the smoke, making it cumbersome and inconvenient. Existing electronic heating methods suffer from low efficiency, uneven heating, and localized overheating that causes the smoke to burn or char, affecting the taste. Excessive temperatures can also pose safety hazards, and burnt or charred smoke is difficult to clean, resulting in a poor user experience. Summary of the Invention
[0004] To address at least one of the aforementioned problems, the present invention provides a heating device comprising a housing, wherein the housing has an inner cavity, and a smoke support and an electric heating unit are disposed within the inner cavity. The smoke support has an inner side with a smoke chamber for holding smoke. The housing has a first air inlet and a second air inlet communicating with the outside, respectively connected to the smoke chamber. The electric heating unit is placed within the second air inlet. The smoke support has an air outlet connecting the smoke chamber to an external suction pipe. In use, the suction pipe draws in air, and outside air is drawn into the smoke chamber through the first air inlet to form a first portion of air. Simultaneously, outside air... Air is drawn into the second air inlet duct and heated by the electric heating unit before being drawn into the smoke chamber to form a second portion of air. The first portion of air and the second portion of air mix in the smoke chamber to form mixed hot air. The mixed hot air heats the smoke and produces smoke, which is then drawn into the suction pipe from the air outlet. The heating device of this invention has a simple structure and low production cost. By mixing air in through the first and second air inlets and heating the air in the second air inlet through the electric heating unit, the temperature inside the smoke chamber is prevented from becoming too high, which could cause the smoke to burn or become charred. This improves the taste of the smoke and also makes it easier to clean the smoke holder, resulting in a better user experience.
[0005] Optionally, the electric heating unit includes a heat-conducting bracket and an electric heating element, the smoke support is placed inside the heat-conducting bracket, the electric heating element is placed on the side of the heat-conducting bracket away from the smoke support, and an annular gap is provided between the heat-conducting bracket and the smoke support.
[0006] Optionally, the heating element is annular, the inner wall of the heating element is close to or in contact with the heat-conducting bracket, and a first heat-insulating element is provided between the side of the heat-conducting bracket away from the smoke support and the housing; a temperature control element is provided on one side of the heating element, and the temperature control element is a temperature sensor or a temperature control switch.
[0007] Optionally, the heating element is made of metal, alloy, carbon fiber, graphene, or carbon nanotube material, and is encapsulated in ceramic, plastic, silicone, rubber, mica, or metal. In this invention, the heating element is a ceramic heating element, and the heating element has a break. The heat-conducting bracket has a limiting protrusion, and the upper end of the heating element abuts against the lower end of the limiting protrusion for limitation. The first heat-insulating component has a support portion, and the upper end of the support portion abuts against the lower end of the heating element for limitation. The heat-conducting bracket is made of aluminum, aluminum alloy, ceramic, stainless steel, or copper.
[0008] Optionally, the heat-conducting bracket includes an integrally connected horizontal support plate and an annular plate. The heating element is disposed on the side of the annular plate away from the smoke support. The housing is provided with a first air inlet for connecting the outside to the first air inlet duct. The horizontal support plate is provided with a connecting hole for connecting the first air inlet duct to the smoke chamber. The housing is provided with a second air inlet for connecting the outside to the second air inlet duct. A ventilation gap is provided between the annular plate and the housing for connecting the second air inlet duct to the smoke chamber.
[0009] Optionally, the housing is provided with an annular rib, and a second heat-insulating member and an annular sealing sheet are provided between the annular rib and the horizontal support plate. The second heat-insulating member abuts against the upper side of the horizontal support plate, and the annular sealing sheet abuts between the second heat-insulating member and the annular rib.
[0010] Optionally, a support base is provided inside the housing, and the smoke support is placed on the support base. An annular protrusion is provided on the lower side of the smoke support, and an annular groove corresponding to the annular protrusion is provided on the support base. A smoke outlet chamber is formed between the annular protrusion and the support base. The smoke outlet chamber is connected between the smoke chamber and the suction pipe. A first protruding ring is provided on the lower sidewall of the smoke support, and a second protruding ring is provided on the support base. Both the first and second protruding rings are provided in the smoke outlet chamber. The second protruding ring is coaxially arranged with the suction inlet of the suction pipe, and the first protruding ring is coaxially arranged above the second protruding ring. The support base is provided with a recessed oil collection groove, which is annular and coaxially arranged with the second protruding ring.
[0011] Optionally, the housing includes a detachably connected upper housing and a lower housing, the heating unit is connected to the upper housing, the smoke support is placed on the lower housing, the upper housing is provided with a first magnetic connector electrically connected to the heating unit, and the lower housing is provided with a second magnetic connector electrically connected to an external circuit board, the first magnetic connector and the second magnetic connector are magnetically attracted and conductive.
[0012] Optionally, the heating device further includes a body for mounting the suction pipe. A battery component for supplying power to the heating unit is detachably mounted on the body. The battery component includes a battery cell and conductive contacts electrically connected to the battery cell. A spring-loaded conductive pin corresponding to the conductive contacts is mounted on the body. A circuit board is mounted on the body, and both the spring-loaded conductive pin and the heating unit are electrically connected to the circuit board. A limiting plate is threaded onto the body, positioned on the side of the battery component away from the spring-loaded conductive pin. A rotating handle is mounted on the limiting plate. A charging interface for charging the battery component is also provided on the body.
[0013] Compared with existing technologies, the heating device in this invention has a simple structure and low production cost. It mixes air intake through the first air intake duct and the second air intake duct, and heats the air flowing into the smoke chamber through the first air intake duct (preheated) and the air in the second air intake duct through the electric heating unit. This avoids the temperature inside the smoke chamber from becoming too high, which would cause the smoke to burn or scorch. It improves the taste of smoke inhalation and the amount of volatile gas, while also making it easier to clean the smoke holder and providing a better user experience.
[0014] In addition, the present invention also provides an electronic hookah, including the heating device described above. The electronic hookah also has the beneficial effects of the heating device described above, which will not be repeated here. Attached Figure Description
[0015] Figure 1 This is a perspective view of the heating device of the present invention;
[0016] Figure 2 This is a cross-sectional view of the heating device of the present invention;
[0017] Figure 3 for Figure 2 Enlarged view of section A in the middle;
[0018] Figure 4 for Figure 2 Enlarged view of section B;
[0019] Figure 5 This is a schematic diagram of the structure of the second air inlet of the heating device of the present invention;
[0020] Figure 6 This is a schematic diagram of the structure of the smoke support of the heating device of the present invention;
[0021] Figure 7 This is a schematic diagram of the structure of the limiting plate of the heating device of the present invention;
[0022] Figure 8 This is an exploded view of the electric heating unit of the heating device of the present invention;
[0023] Figure 9 This is a schematic diagram of the structure of the support base of the heating device of the present invention;
[0024] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the housing, 11 is the first air inlet, 12 is the second air inlet, 13 is the upper housing, 131 is the first magnetic connector, 14 is the lower housing, 141 is the second magnetic connector, 15 is the display screen, 16 is the control button, 1001 is the inner cavity, 101 is the first air inlet, 102 is the second air inlet, 103 is the annular rib, 104 is the second insulation component, 105 is the annular sealing sheet, 106 is the smoke outlet chamber, 2 is the smoke support, 20 is the smoke chamber, 201 is the air outlet, 202 is the annular protrusion, 21 is the first protruding ring, 3 is the electric heating unit, and 31 is the heat conduction support. 311 is an annular gap, 312 is a limiting protrusion, 313 is a horizontal support plate, 314 is an annular plate, 315 is a connecting hole, 316 is a ventilation gap, 32 is an electric heating element, 321 is a break, 4 is an air intake pipe, 5 is the first heat preservation component, 501 is a support part, 6 is the body, 61 is a spring conductive pin, 62 is a limiting plate, 63 is a rotating handle, 64 is a charging interface, 7 is a battery component, 71 is a battery cell, 72 is a conductive contact piece, 8 is a temperature control element, 9 is a water container, 91 is an LED bead, 10 is a circuit board, 50 is a support base, 5001 is an annular groove, 5002 is a second convex ring, and 5003 is an oil collection groove. Detailed Implementation
[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0026] In the description of this invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.
[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.
[0028] See Figures 1-9 This invention provides a heating device, including a housing 1 with an inner cavity 1001. A smoke support 2 and an electric heating unit 3 are disposed within the inner cavity 1001. A smoke chamber 20 for holding smoke is provided inside the smoke support 2. The housing 1 has a first air inlet duct 11 and a second air inlet duct 12 communicating with the outside. The first air inlet duct 11 and the second air inlet duct 12 are respectively connected to the smoke chamber 20. The electric heating unit 3 is placed inside the second air inlet duct 12. An air outlet 201 is provided on the smoke support 20 for connecting the smoke chamber 20 with an external air intake pipe 4. In use, the air intake pipe 4 draws in air, and outside air is drawn into the smoke chamber 20 through the first air inlet duct 11 to form a first portion of air. Simultaneously, a second portion of external air is drawn into the second air inlet duct 12 and heated by the electric heating unit 3 before being drawn into the smoke chamber 20 to form a second portion of air. The first portion of air and the second portion of air mix in the smoke chamber 20 to form mixed hot air. The mixed hot air heats the smoke and produces smoke, which is then drawn into the suction pipe 4 from the air outlet 201. The heating device of this invention has a simple structure and low production cost. By mixing air in the first and second air inlets and heating the air in the second air inlet duct by the electric heating unit, the temperature inside the smoke chamber is prevented from becoming too high, which would cause the smoke to burn or become charred. This improves the taste of the smoke and makes it easier to clean the smoke holder, resulting in a better user experience.
[0029] Specifically, this heating device employs two independent paths: a first air inlet (normal temperature airflow) and a second air inlet (heated airflow). An electric heating unit is centrally located within the second air inlet to heat the air. Ultimately, the two airflows mix within the smoke chamber, preventing overheating caused by a single stream of hot air. This design achieves indirect heating of the smoke, avoiding direct contact between the electric heating unit and the smoke, thus allowing for precise control of the hot air temperature acting on the smoke. The mixing with normal temperature air prevents overheating and avoids scorching or burning of the smoke due to localized overheating, significantly improving the taste and purity of the smoke. The dual air inlet paths (first and second) increase the airflow volume or channels, thereby enhancing the output smoke volume and quality. The smoke is a solid or semi-solid aerosol matrix, such as tobacco paste. This embodiment also provides an extended option: the smoke can be a solid or semi-solid drug that, upon heating, volatilizes medicinal smoke for inhalation, providing therapeutic or health benefits. (See reference...) Figure 2 , Figure 3 and Figure 8The electric heating unit 3 includes a heat-conducting bracket 31 and an electric heating element 32. The smoke support 2 is placed inside the heat-conducting bracket 31, and the electric heating element 32 is placed on the side of the heat-conducting bracket 31 away from the smoke support 2. An annular gap 311 is provided between the heat-conducting bracket 31 and the smoke support 2. The electric heating element 32 first heats the heat-conducting bracket 31, and then the heat-conducting bracket radiates heat into the air in the annular gap 311. The heated air evenly surrounds and heats the entire smoke support 2. This indirect heat transfer mode avoids localized overheating caused by direct contact between the heating element and the smoke support, ensuring a more uniform heat distribution and effectively preventing localized scorching within the smoke bowl while other areas remain underheated, thus achieving efficient and uniform indirect heating. The heating element 32 is annular, with its inner wall close to or in contact with the heat-conducting support 31 (in actual use, if the thermal expansion coefficients of the heating element 32 and the heat-conducting support 31 differ significantly, the inner wall of the heating element 32 cannot fully contact the heat-conducting support 31, otherwise it may easily crack due to thermal stress; if the heating element... When the thermal expansion coefficients of materials 32 and 31 are similar or the same, the inner wall of the heating element 32 can be in contact with the heat-conducting bracket 31. A first insulation element 5 is provided between the side of the heat-conducting bracket 31 away from the smoke support 2 and the shell 1. The first insulation element 5 is a breathable aerogel insulation element with good insulation effect. A temperature control element 8 is provided on one side of the heating element 32. The temperature control element 8 is a temperature sensor or temperature control switch. The ring structure can uniformly wrap and heat the heat-conducting bracket 31 in 360°, thereby avoiding the problem of local temperature being too high or too low. This symmetrical heating method ensures that heat is evenly radiated outward through the heat-conducting bracket, providing a stable heat source for the annular gap 311 and achieving uniform heating of the tobacco chamber. The first insulation element is filled between the heat-conducting bracket 31 and the shell 1. Its main functions are: first, to insulate against heat loss to the shell, preventing overheating and burns to the user, thus improving safety; second, to concentrate heat and transfer it inward to the airflow in the annular gap 311, reducing ineffective heat loss, improving heating efficiency, and making the equipment more energy-efficient and heating up faster. The temperature control element 8 achieves precise intelligent control and overheat protection. If it is a temperature sensor, it can monitor the temperature of the heating element or heat-conducting bracket in real time and feed the data back to the control circuit. The circuit adjusts the power supplied to the heating element 32 to achieve precise closed-loop temperature control, stabilizing the temperature at the set value and fundamentally eliminating the problem of tobacco scorching caused by temperature runaway, ensuring the best taste. If it is a temperature control switch, it mainly serves as over-temperature protection. When a system malfunction causes an abnormal temperature rise that exceeds the critical point of the physical switch, the temperature control switch will immediately disconnect the circuit and forcibly stop heating to prevent fire or equipment damage. This is a crucial safety redundancy design.
[0030] See Figure 2 , Figure 3 and Figure 8The heating element 32 is a ceramic heating element, possessing excellent characteristics such as uniform heating, high thermal efficiency, high temperature resistance, corrosion resistance, and good insulation. It is not easily oxidized, has a long lifespan, and can provide a stable and reliable heat source. Specifically, the ceramic heating element adopts a double-layer encapsulation process, with the inner layer being a heating element made of metal, alloy, carbon fiber, graphene, or carbon nanotubes, and the outer layer being ceramic. Of course, the outer layer can also be made of plastic, silicone, rubber, mica, or metal. The heating element 32 has a break 321. Ceramic materials have a low coefficient of thermal expansion and contraction; the break makes the heating element an open ring, providing room for radial expansion during heating, effectively preventing cracking and breakage of the ceramic element due to accumulated thermal stress, greatly improving the reliability and durability of the product. The heat-conducting bracket 31 has a limiting protrusion 312, and the upper end of the heating element 32 is connected to... The lower end of the limiting protrusion 312 abuts against the limiting position, and the first heat insulation component 5 is provided with a support part 501. The upper end of the support part 501 abuts against the lower end of the heating element 32, so that the heating element 32 is installed firmly and is not easy to shift, and the heating is stable. The heat-conducting bracket 31 is made of aluminum, aluminum alloy, ceramic, stainless steel or copper or other materials with good thermal conductivity. The heat-conducting bracket 31 uses a metal material with a high thermal conductivity, which can quickly and evenly absorb and transfer the heat generated by the heating element to the entire heat-conducting bracket 31. Then, the air flowing through the annular gap 311 is efficiently heated through convection and radiation, avoiding heat accumulation and ensuring the response speed of the heating reaction and the uniformity of the temperature field. Aluminum and aluminum alloy also have the advantages of being lightweight and cost-effective.
[0031] See Figure 3 and Figure 8The heat-conducting bracket 31 includes an integrally connected horizontal support plate 313 and an annular plate 314. The heat-conducting bracket 31 is integrally molded, with a simple structure and low production cost. The electric heating element 32 is disposed on the side of the annular plate 314 away from the smoke support 2. The housing 1 is provided with a first air inlet 101 for connecting the outside to the first air inlet duct 11. The horizontal support plate 313 is provided with a connecting hole 315 for connecting the first air inlet duct 11 and the smoke chamber 20. The housing 1 is provided with a second air inlet 102 for connecting the outside to the second air inlet duct 12. A ventilation gap 316 is provided between the annular plate 314 and the housing 1 for connecting the second air inlet duct 12 and the smoke chamber 20. The horizontal support plate 313 acts as a physical barrier, which can effectively separate the upper ambient temperature air from the lower heating space, thereby improving the heat preservation of the heating space. The core function of the annular plate 314 is as a heat exchange plate. The heat from the electric heating element 32 is conducted to it, and it then transfers the heat to the air flowing through the ventilation gap 316. This structure increases the contact area between the air and the hot surface, prolongs the heating time of the air, and improves the heating efficiency of the air. In actual use, the inner wall of the connecting hole 315 will also heat up to a certain extent, so that the room temperature air in the first air inlet duct 11 can be preheated to a certain extent when it flows through the connecting hole 315. The preheated air then enters the smoke chamber 20, avoiding the air temperature entering the smoke chamber 20 from the first air inlet duct 11 being too low. If the temperature is too low, it will lead to: 1. The final mixed temperature being too low, resulting in poor heating effect; 2. The temperature difference between the air entering the smoke chamber 20 from the first air inlet duct 11 and the air entering the smoke chamber 20 from the second air inlet duct 12 being too large, which will aggravate turbulence and airflow obstruction when the two air streams are mixed.
[0032] See Figure 2 and Figure 3The housing 1 is provided with an annular rib 103. A second heat insulation element 104 and an annular sealing sheet 105 are provided between the annular rib 103 and the horizontal support plate 313. The annular sealing sheet 105 has a through hole for ventilation at its center. The second heat insulation element 104 abuts against the upper side of the horizontal support plate 313, and the annular sealing sheet 105 abuts against the second heat insulation element 104 and the annular rib 103. This combined structure forms a tight sealing layer between the horizontal support plate 313 and the annular rib 103 of the housing 1. The annular sealing sheet 105 (usually made of elastic heat-resistant materials such as silicone or rubber, which also serves as heat insulation to reduce heat conduction to the housing 1, causing the heat generated by the heating element 32 to be lost to the air and lowering the temperature of the smoke in the smoke chamber 2020, and also preventing personnel from touching the housing 1 and causing burns) acts as the main sealing element here, effectively preventing crosstalk between the two key airflows, the first air inlet duct 11 and the second air inlet duct 12, and ensuring the second air inlet duct 12 Hot air can only enter the flue gas chamber through the designed ventilation gap 316, and will not leak into other cavities. This prevents the cold air in the first air inlet duct 11 from short-circuiting and leaking without passing through the connecting hole 315, thus ensuring stable mixing of hot and cold air and facilitating control of the heating temperature. The second insulation component 104 is located above the horizontal support plate 313 and directly fills the space between the high-temperature heat-conducting support and the upper shell. Its main function is heat insulation, further reducing the transfer of heat upwards and improving the insulation effect.
[0033] See Figure 2 , Figure 3 , Figure 6 and Figure 9A support base 50 is provided inside the housing 1, and a smoke support 2 is placed on the support base 50. An annular protrusion 202 is provided on the lower side of the smoke support 2. An annular groove 5001 corresponding to the annular protrusion 202 is provided on the support base 50. A smoke outlet chamber 106 is formed between the annular protrusion 202 and the support base 50. The smoke outlet chamber 106 connects the smoke chamber 20 and the suction pipe 4. A first protruding ring 21 is provided on the lower side wall of the smoke support 2, and a second protruding ring 5002 is provided on the support base 50, both of which are located in the smoke outlet chamber 106. The second protruding ring 5002 is coaxially arranged with the inlet of the suction pipe 4, and the first protruding ring 21 is coaxially arranged. Above the second convex ring 5002, the first convex ring 21 and the second convex ring 5002 are coaxially arranged vertically and form a narrow opening in the smoke outlet chamber 106. When the smoke flows from the wider area to the narrow channel, the flow rate increases, which helps to guide the smoke to concentrate and flow at high speed to the inhalation port. This can reduce the retention and dispersion of smoke in the chamber, ensuring high smoke delivery efficiency and timely taste response. The support base 50 is provided with a recessed oil collection groove 5003. The oil collection groove 5003 is annular and coaxially arranged with the second convex ring 5002. The coaxial annular oil collection groove 5003 is located below and around the airflow path, which can efficiently capture dripping condensed oil, prevent it from flowing everywhere, and facilitate cleaning.
[0034] See Figure 2 and Figure 3 The housing 1 includes a detachably connected upper housing 13 and a lower housing 14. The heating unit 3 is connected to the upper housing 13, and the smoke support 2 is placed on the lower housing 14. The upper housing 13 is provided with a first magnetic connector 131 that is electrically connected to the heating unit 3, and the lower housing 14 is provided with a second magnetic connector 141 that is electrically connected to the external circuit board 10. The first magnetic connector 131 and the second magnetic connector 141 are magnetically attracted and conductive. During assembly, the upper and lower housings only need to be brought close together, and the magnetic attraction will automatically guide the two connectors to accurately align and complete the electrical connection. There is no need for precise alignment of the plug or complex operations such as rotation and tightening, making the operation convenient.
[0035] See Figure 2 , Figure 4 and Figure 7The heating device also includes a body 6 for mounting the suction pipe 4. A battery component 7 for powering the heating unit 3 is detachably mounted on the body 6. The battery component 7 is equipped with a battery cell 71 and a conductive contact 72 electrically connected to the battery cell 71. A spring conductive pin 61 corresponding to the conductive contact 72 is mounted on the body 6. A circuit board 10 is mounted on the body 6. The spring conductive pin 61 and the heating unit 3 are both electrically connected to the circuit board 10. A limiting plate 62 is threaded onto the body 6. The limiting plate 62 is positioned on the side of the battery component 7 away from the spring conductive pin 61. A rotating handle 63 is mounted on the limiting plate 62. By rotating the limiting plate, the battery can be pressed tightly towards the spring probe 61 from the tail end, ensuring that the battery component will not loosen or shift within the body, ensuring reliable operation. A charging interface 64 for charging the battery component 7 is mounted on the body 6. Dual-mode power supply: This design provides two power supply options: direct charging mode: the battery component 7 installed within the body is directly charged through the charging interface 64. This mode is best suited for use in fixed locations. It is plug-and-play without the need to remove the battery, making it extremely convenient. Alternatively, the battery component 7 can be removed and charged using an external charger or directly replaced with another fully charged battery. This mode is best suited for mobile, outdoor, or long-term continuous use scenarios.
[0036] See Figure 1 and Figure 5 The main body 1 is also equipped with a display screen 15 and control buttons 16. The display screen 15 shows information such as temperature, and the control buttons 16 allow for adjustment of heating temperature and heating time. A water container 9 is inserted into the bottom of the main body 1. The water in the container can effectively filter out some of the larger particles, dust, and some water-soluble substances produced during the combustion or heating of the smoke. An LED bead 91 is installed at the bottom of the main body 1. The water container 9 is made of transparent material, and the LED bead can be single-color or multi-color. Light can be shone into the water container 9 so that users can directly observe the water level and the cleanliness of the water in dim environments. This allows users to be reminded to change the water in time to ensure filtration effect and hygiene. Users can also see the whole process of smoke entering the water through the tube and bubbling, which increases the fun and atmosphere of using the device.
[0037] The heating device of this invention has a simple structure and low production cost. It mixes air intake through the first air intake duct and the second air intake duct, and heats the air flowing into the smoke chamber through the first air intake duct (preheated) and the air in the second air intake duct through the electric heating unit. This avoids the temperature in the smoke chamber from becoming too high, which would cause the smoke to burn or become scorched. It improves the taste of smoke inhalation and the amount of volatile gas, while also making it easy to clean the smoke holder and providing a better user experience.
[0038] Furthermore, this embodiment also discloses a circuit board control method for the aforementioned circuit board 10:
[0039] 1. Start-up heating mode: The default temperature setting is set upon startup, and the user's previous settings can be remembered and recalled. Users can adjust the temperature settings as needed. After the device is started, it immediately enters full power output – rapid heating mode (the heating temperature range is from the initial temperature to the set heating temperature minus a certain downward adjustment value, such as the set heating temperature being 260 degrees, and the downward adjustment value being 30 degrees, then the final temperature of rapid heating mode is 260-30=230 degrees, and the heating range of rapid heating mode is from the initial temperature to 230 degrees). Once this temperature is reached, it switches to fast heating mode (appropriate power continues to heat up to the set heating temperature. The purpose here is to prevent heating too quickly, which may cause some surface tobacco to burn or clump, affecting the taste. By appropriately slowing down the heating time, the temperature difference between the inside and outside of the tobacco is relatively small, resulting in better taste and volatile matter in the smoke). When the temperature reaches the set heating temperature, such as 260 degrees, it switches to the next heat preservation heating mode (the heat preservation temperature fluctuates within the positive and negative deviation values of the set temperature. Heating starts when the lower limit deviation temperature value is reached, and heating stops when the upper limit deviation temperature value is reached). The above is the start-up heating mode.
[0040] 2. Operating Heating Modes: If there is hot and cold air convection (i.e., when the temperature detected by the temperature sensor drops more than the set temperature deviation value, such as 2 degrees Celsius within a few seconds, such as 0.5 seconds), the system enters rapid heating mode. After reaching the set temperature, it switches to heat preservation mode (aligning with the set temperature). In heat preservation mode, after several minutes (such as 5 minutes) without hot and cold air convection (i.e., when the temperature detected by the temperature sensor does not drop more than the temperature deviation value, such as 2 degrees Celsius within a few seconds, such as 0.5 seconds), the system enters standby mode (preheating mode, where the system automatically sets the heat preservation temperature in the low-temperature zone, such as 200 degrees Celsius, to ensure that the flue gas is in a lower heating temperature range. This ensures that the flue gas does not reach the temperature range that could easily cause scorching or fire, and also keeps the flue gas in a low-volatility state, extending the flue gas volume and quality during subsequent use, reducing energy waste in this process, and reducing the risk of fire and burns caused by overheating). If there is hot and cold air convection (i.e., when the temperature detected by the temperature sensor drops more than the temperature deviation value, such as 2 degrees Celsius within a few seconds), the system enters rapid heating mode.
[0041] In addition, the present invention also provides an electronic hookah, including the heating device described above. The electronic hookah also has the beneficial effects of the heating device described above, which will not be repeated here.
[0042] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", 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 disclosure and simplifying the description, and are not intended to 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 disclosure.
[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0044] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," 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; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0045] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.
[0046] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.
[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
Claims
1. A heating device, characterized in that, The device includes a housing (1), which has an inner cavity (1001). The inner cavity (1001) contains a smoke support (2) and an electric heating unit (3). The smoke support (2) has a smoke chamber (20) for holding smoke. The housing (1) has a first air inlet (11) and a second air inlet (12) connected to the outside. The first air inlet (11) and the second air inlet (12) are respectively connected to the smoke chamber (20). The electric heating unit (3) is placed in the second air inlet (12). The smoke support (2) has an air outlet (201) for connecting the smoke chamber (20) with an external air intake pipe (4). When in use, the suction pipe (4) draws in air. Outside air is drawn into the smoke chamber (20) from the first air inlet (11) to form a first part of air. At the same time, outside air is drawn into the second air inlet (12), heated by the electric heating unit (3), and then drawn into the smoke chamber (20) to form a second part of air. The first part of air and the second part of air are mixed in the smoke chamber (20) to form mixed hot air. The mixed hot air heats the smoke and produces smoke. The smoke is drawn into the suction pipe (4) from the air outlet (201).
2. The heating device according to claim 1, characterized in that, The electric heating unit (3) includes a heat-conducting bracket (31) and an electric heating element (32). The smoke support (2) is placed inside the heat-conducting bracket (31), and the electric heating element (32) is placed on the side of the heat-conducting bracket (31) away from the smoke support (2). An annular gap (311) is provided between the heat-conducting bracket (31) and the smoke support (2).
3. The heating device according to claim 2, characterized in that, The heating element (32) is ring-shaped, and the inner wall of the heating element (32) is close to or in contact with the heat-conducting bracket (31). A first heat-insulating element (5) is provided between the side of the heat-conducting bracket (31) away from the smoke support (2) and the housing (1). A temperature control element (8) is provided on one side of the heating element (32), and the temperature control element (8) is a temperature sensor or a temperature control switch.
4. The heating device according to claim 3, characterized in that, The heating element (32) is a ceramic heating element, and the heating element (32) is provided with a break (321); the heat-conducting bracket (31) is provided with a limiting protrusion (312), the upper end of the heating element (32) abuts against the lower end of the limiting protrusion (312) for limiting; the first heat-insulating member (5) is provided with a support part (501), the upper end of the support part (501) abuts against the lower end of the heating element (32) for limiting; the heat-conducting bracket (31) is made of aluminum, aluminum alloy, ceramic stainless steel, or copper.
5. The heating device according to claim 2, characterized in that, The heat-conducting bracket (31) includes an integrally connected horizontal support plate (313) and an annular plate (314). The heating element (32) is disposed on the side of the annular plate (314) away from the smoke support (2). The housing (1) is provided with a first air inlet (101) for connecting the outside to the first air inlet channel (11). The horizontal support plate (313) is provided with a connecting hole (315) for connecting the first air inlet channel (11) and the smoke chamber (20). The housing (1) is provided with a second air inlet (102) for connecting the outside to the second air inlet channel (12). The annular plate (314) and the housing (1) are provided with a ventilation gap (316) for connecting the second air inlet channel (12) and the smoke chamber (20).
6. The heating device according to claim 5, characterized in that, The housing (1) is provided with an annular rib (103). A second heat insulation component (104) and an annular sealing sheet (105) are provided between the annular rib (103) and the horizontal support plate (313). The second heat insulation component (104) abuts against the upper side of the horizontal support plate (313), and the annular sealing sheet (105) abuts between the second heat insulation component (104) and the annular rib (103).
7. The heating device according to claim 1, characterized in that, A support base (50) is provided inside the housing (1), and the tobacco support (2) is placed on the support base (50). An annular protrusion (202) is provided on the lower side of the tobacco support (2). An annular groove (5001) corresponding to the annular protrusion (202) is provided on the support base (50). A smoke outlet chamber (106) is formed between the annular protrusion (202) and the support base (50). The smoke outlet chamber (106) is connected between the tobacco chamber (20) and the suction pipe (4). The lower sidewall of the tobacco support (2) is provided with a downward protrusion. The first protruding ring (21) and the support base (50) are provided with a second protruding ring (5002) that protrudes upward. The first protruding ring (21) and the second protruding ring (5002) are both provided in the smoke outlet chamber (106). The second protruding ring (5002) is coaxially arranged with the inlet of the air intake pipe (4). The first protruding ring (21) is coaxially arranged above the second protruding ring (5002). The support base (50) is provided with a recessed oil collection groove (5003). The oil collection groove (5003) is annular and coaxially arranged with the second protruding ring (5002).
8. The heating device according to claim 1, characterized in that, The housing (1) includes a detachably connected upper housing (13) and a lower housing (14). The electric heating unit (3) is connected to the upper housing (13), and the smoke support (2) is placed on the lower housing (14). The upper housing (13) is provided with a first magnetic connector (131) electrically connected to the electric heating unit (3), and the lower housing (14) is provided with a second magnetic connector (141) electrically connected to the external circuit board (10). The first magnetic connector (131) and the second magnetic connector (141) are magnetically attracted and conductive.
9. The heating device according to claim 1, characterized in that, It also includes a body (6) for installing the suction pipe (4), on which a battery component (7) for supplying power to the heating unit (3) is detachably provided. The battery component (7) is provided with a battery cell (71) and a conductive contact (72) electrically connected to the battery cell (71). The body (6) is provided with a spring conductive pin (61) corresponding to the conductive contact (72). The body (6) is provided with a circuit board (10). The spring conductive pin (61) and the heating unit (3) are both electrically connected to the circuit board (10). A limiting plate (62) is threadedly connected to the body (6). The limiting plate (62) is placed on the side of the battery component (7) away from the spring conductive pin (61). A rotating handle (63) is provided on the limiting plate (62). The body (6) is provided with a charging interface (64) for charging the battery component (7).
10. An electronic hookah, characterized in that, Includes the heating device as described in any one of claims 1-9.