HOOKAH DEVICE WITH DUAL HEATING MODULES

Description

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of Chinese Patent Application No. 202511108313.3 filed on Aug. 7, 2025, the contents of which are incorporated herein by reference in their entirety.

FIELD OF THE INVENTION

The present invention relates to an electronically heated hookah device, and more particularly to a hookah device with dual heating modules.

BACKGROUND OF THE INVENTION

Traditional hookahs typically rely on charcoal for heating, which presents issues such as imprecise temperature control, uneven smoke production, generation of toxic gases during charcoal combustion, and contamination from combustion by-products. Existing electrically heated hookah devices mostly employ a single heat source structure, suffering from problems like slow heating speed, uneven heating, and poor user experience.

Therefore, there is an urgent need for a hookah device that can solve the aforementioned problems.

SUMMARY OF THE INVENTION

The objective of the present invention is to provide a hookah device with dual heating modules, which can simultaneously heat the smoke-generating medium from both the top wall and the side wall of the tobacco bowl, thereby achieving fast heating speed, uniform heating, and a good user experience.

To achieve the above objective, the present invention provides a hookah device with dual heating modules, including a housing, a heating module, a power supply module, and a tobacco bowl. The power supply module is configured to supply power to the heating module. The heating module includes a first heating module located at a top wall of the mounting cavity and a second heating module surrounding the mounting cavity laterally. The housing includes a lower shell having a mounting cavity and an upper shell mounting the first heating module. The tobacco bowl is accommodated in the mounting cavity and is configured to contain a smoke-generating medium, and a bottom wall and a top wall of the tobacco bowl are each provided with a plurality of air holes, the upper shell is cooperatively installed on the lower shell to seal the mounting cavity, and the housing is provided with an air inlet channel communicating the outside with the mounting cavity. The first heating module is configured to heat the top wall to heat the smoke-generating medium in the tobacco bowl from the top wall, and the second heating module is configured to surround the mounting cavity and heat a side wall of the tobacco bowl to heat the smoke-generating medium in the tobacco bowl from the side wall.

As a preferable embodiment, the first heating module is a resistive heating module including a resistive heating element, or the first heating module is an electromagnetic heating module including an electromagnetic heating part and an electromagnetic induction part, wherein the electromagnetic heating part emits a high-frequency electromagnetic signal to the electromagnetic induction part to cause the electromagnetic induction part of the first heating module to generate an eddy current effect and generate heat; the resistive heating element or the electromagnetic induction part of the first heating module is plate-shaped and forms a bottom wall of the upper shell; when the upper shell is cooperatively installed on the lower shell, the resistive heating element or the electromagnetic induction part of the first heating module contacts the top wall of the tobacco bowl.

Specifically, when the resistive heating element or the electromagnetic induction part of the first heating module is plate-shaped and forms the bottom wall of the upper shell, a side of the bottom wall of the upper shell away from the mounting cavity is further provided with a heat-resistant plate spaced apart from the bottom wall of the upper shell; the air inlet channel is formed between the bottom wall of the upper shell and the heat-resistant plate, and the bottom wall of the upper shell is provided with a plurality of air holes to communicate with the mounting cavity. This arrangement allows the air entering the tobacco bowl to be preheated by the first heating module, thereby improving the smoking experience, effectively utilizing the heating efficiency of the first heating module, and preventing the temperature of the control part within the lower shell from becoming excessively high.

As a preferable embodiment, the top wall of the tobacco bowl includes a metal top wall capable of being electromagnetically induced, the first heating module includes an electromagnetic heating part, and the electromagnetic heating part of the first heating module emits a high-frequency electromagnetic signal to the metal top wall to cause the metal top wall to generate an eddy current effect and heat the smoke-generating medium in the tobacco bowl. This solution causes the top wall of the tobacco bowl to generate heat actively, resulting in a high heating rate and energy savings.

As a preferable embodiment, the second heating module is a resistive heating module including a resistive heating element, or the second heating module is an electromagnetic heating module including an electromagnetic heating part and an electromagnetic induction part; the resistive heating element or the electromagnetic induction part of the second heating module is annular and forms a cavity wall of the mounting cavity.

As a preferable embodiment, the side wall of the tobacco bowl includes an annular metal wall capable of being electromagnetically induced, the second heating module includes an electromagnetic heating part, and the electromagnetic heating part of the second heating module emits a high-frequency electromagnetic signal to the annular metal wall to cause the annular metal wall to generate an eddy current effect and heat the smoke-generating medium in the tobacco bowl. This solution causes the side wall of the tobacco bowl to generate heat actively, resulting in a high heating rate and energy savings.

As a preferable embodiment, the top wall of the tobacco bowl is recessed inward into the tobacco bowl to form a first recess, and a wall of the first recess is provided with a plurality of the air holes; when the upper shell is cooperatively installed on the lower shell, a bottom wall of the upper shell contacts the top wall of the tobacco bowl and forms a heating area with the first recess of the top wall, with the heating area communicating the air inlet channel with the air holes. This solution not only allows the first heating module to primarily heat the top surface of the tobacco bowl that is offset from the first recess, preventing overheating and charring of the smoke-generating medium within the tobacco bowl, but also enables the first heating module to preheat the air in the heating area, ensuring that the air entering the tobacco bowl is hot.

Specifically, a plurality of the first recesses which are annular are provided, and the plurality of the first recesses are arranged concentrically and spaced apart on the top wall of the tobacco bowl. Alternatively, the first recesses may also be arranged in a spiral pattern on the top wall, or in a cross-shaped or other pattern, which are not limited to the annular concentric structure.

Specifically, a cross-section of the first recess is arc-shaped. This solution ensures that the first heating module only heats a small area of the top wall, which prevents localized overheating and charring of the smoke-generating medium in the tobacco bowl. Furthermore, the air holes having arc-shaped cross-section allows the airflow to enter the tobacco bowl in multiple directions as it passes through the air holes, thereby promoting diffusion of the hot airflow and resulting in a more uniform temperature within the tobacco bowl.

As a preferable embodiment, the bottom wall of the tobacco bowl is recessed outward from the tobacco bowl to form a second recess, the second recess is annular, and a plurality of the second recesses are arranged concentrically and spaced apart on the bottom wall of the tobacco bowl.

As a preferable embodiment, the tobacco bowl includes a bowl body for accommodating the smoke-generating medium and a bowl cover covering an opening of the bowl body, the top wall is formed on the bowl cover, the bottom wall is formed on a bottom wall of the bowl body, and a handle is installed on the bowl cover. The handle facilitates opening the bowl cover, and the bowl cover can be snapped onto the bowl body or simply placed on top of it.

As a preferable embodiment, the tobacco bowl is a metal bowl, such as an iron bowl or a stainless steel bowl.

As a preferable embodiment, the hookah device with dual heating modules further includes a base support installed at a lower side of the mounting cavity of the lower shell and having a sealed air pipe communicating with the mounting cavity, wherein a buffer channel communicating a bottom wall of the accommodating cavity with the outside is further formed on the base support. The buffer channel can equalize the temperature during smoking and buffer the water pressure after smoking is completed, preventing excessive water from entering the tobacco bowl through the main smoke path.

As a preferable embodiment, an annular sealing sleeve is installed in the base support, the sealed air pipe is formed in the annular sealing sleeve, and the buffer channel is formed between the annular sealing sleeve and the base support.

As a preferable embodiment, the hookah device with dual heating modules further includes a control circuit, wherein the upper shell is provided with a first temperature sensor for detecting a temperature of the first heating module or the tobacco bowl, the lower shell is provided with a second temperature sensor for detecting a temperature of the second heating module or the tobacco bowl; the control circuit controls the first heating module to maintain a first temperature range based on a first temperature detected by the first temperature sensor, and controls the second heating module to maintain a second temperature range based on a second temperature detected by the second temperature sensor, wherein the first temperature range is greater than the second temperature range. The first heating module operates at a higher temperature and can preheat the air about to enter the tobacco bowl, while the second heating module operates at a lower temperature but covers a larger heating area, thereby achieving uniform heating while preventing overheating and charring of the smoke-generating medium.

Specifically, the first temperature range is 200-320° C., and the second temperature range is 100-200° C. Compared to existing hookah heating technologies, the present invention significantly reduces the heating temperature while increasing heating efficiency, preventing charring of the smoke-generating medium and improving user experience. Furthermore, the present invention limits the side heating temperature of the tobacco bowl to below 200° C., preventing localized overheating of the smoke-generating medium while ensuring uniform heating.

As a preferable embodiment, the lower shell and the upper shell have a first annular wall and a second annular wall surrounding the mounting cavity on their opposite sides respectively; when the lower shell and the upper shell are cooperatively installed, the first annular wall and the second annular wall cooperate oppositely and seal the mounting cavity.

Specifically, the hookah device with dual heating modules further includes an electrical connection assembly, the electrical connection assembly including an elastic probe installed on one of the first annular wall and the second annular wall, and a conductive block installed on the other of the first annular wall and the second annular wall and corresponding to the elastic probe; when the lower shell and the upper shell are cooperatively installed, the elastic probe contacts the conductive block and is electrically connected to the conductive block, so that the second heating module is electrically connected to the power supply module through the electrical connection assembly.

Specifically, the first annular wall and/or the second annular wall is provided with a slot communicating an outer edge with an inner edge, a sealing member is arranged at a position offset from the slot. When the lower shell and the upper shell are cooperatively installed, the first annular wall and the second annular wall are in sealed contact via the sealing member, and an air inlet communicating with the air inlet channel is formed at the slot. The air inlet is located between the lower shell and the upper shell, eliminating the need to form a separate air inlet in the upper shell or lower shell, thus reducing costs.

As a preferable embodiment, the upper shell and the lower shell are relatively independent, and the first annular wall and the second annular wall are provided with magnetic components that are magnetically attracted to each other, so that the lower shell and the upper shell are relatively positioned and attracted to each other, eliminating the need for snap-fit positioning, making operation convenient and improving the user experience. In this solution, the upper shell can be completely separated from the lower shell to open the mounting cavity, or it can be positioned and attracted to the lower shell via the magnetic components to seal the mounting cavity. Optionally, the upper shell can also be flipped or rotated relative to the lower shell to open or close the mounting cavity.

More preferably, the magnetic components include a plurality of first magnet blocks provided in the first annular wall and a plurality of second magnet blocks provided in the second annular wall; the plurality of first magnet blocks are arranged in the first annular wall at intervals around a center of the first annular wall and have opposite magnetic polarities, and first magnet blocks with different magnetic polarities are arranged adjacent to each other; the plurality of second magnet blocks are arranged in the second annular wall at intervals around a center of the second annular wall and have opposite magnetic polarities, and second magnet blocks with different magnetic polarities are arranged adjacent to each other; and opposite surfaces of the corresponding first magnet blocks and second magnet blocks have opposite magnetic polarities. This solution allows the lower shell and the upper shell to automatically align via the magnetism of the magnetic components, facilitating precise alignment of the electrical connection assembly between the lower shell and the upper shell.

In comparison with the prior arts, the present invention provides two sets of heating modules arranged around the tobacco bowl. The first heating module is configured to heat the smoke-generating medium within the tobacco bowl from the top wall, aligning the heating direction with the air flow direction, which facilitates direct heating of the smoke-generating medium assisted by air heating. The second heating module is configured to heat the smoke-generating medium within the tobacco bowl from the side wall, ensuring uniform heating of the smoke-generating medium while providing insulation to the tobacco bowl, preventing its temperature from dropping too rapidly. Moreover, by heating the top wall of the tobacco bowl with the first heating module and the side wall with the second heating module, the effective heating area is increased, thereby improving the heating efficiency. Furthermore, the simultaneous heating of the tobacco bowl from both the top and side walls by the two heating modules also results in more uniform heating within the tobacco bowl, leading to a better user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view of the hookah device with dual heating modules according to the present invention.

FIG. 2 is a partial cross-sectional view of the hookah device with dual heating modules according to Embodiment 1 of the present invention.

FIG. 3 is a cross-sectional view of the lower shell according to the present invention.

FIG. 4 is a cross-sectional view illustrating the hookah device with dual heating modules according to the present invention installed on a container for use.

FIG. 5 is a bottom view of the upper shell according to the present invention.

FIG. 6 is a top view of the lower shell according to the present invention.

FIG. 7 is a structural diagram of the electrical connection assembly when the upper shell and lower shell are engaged according to the present invention.

FIG. 8 is an exploded perspective view of the tobacco bowl according to the present invention.

FIG. 9 is a perspective view of the tobacco bowl according to another embodiment of the present invention.

FIG. 10 is another perspective view of the tobacco bowl according to another embodiment of the present invention.

FIG. 11 is a partial cross-sectional view of the hookah device with dual heating modules according to Embodiment 2 of the present invention.

FIG. 12 is a structural diagram of the battery installation portion in the upper shell according to Embodiment 3 of the present invention.

FIG. 13 is a partial cross-sectional view of the hookah device with dual heating modules according to Embodiment 4 of the present invention.

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

To describe in detail the technical content, structural features, achieved objectives, and effects of the present invention, the following explanation is provided in conjunction with the embodiments and accompanying drawings.

Embodiment 1

Referring to FIGS. 1 to 3, the present invention discloses a hookah device with dual heating modules, including a housing 10, a heating module, a power supply module 20, and a tobacco bowl 30. The power supply module 20 supplies power to the heating module. The heating module includes a first heating module 41 located at a top wall 302 of the mounting cavity 131 and a second heating module 42 surrounding the mounting cavity 131 laterally. The housing 10 includes a lower shell 11 having a mounting cavity 131 and an upper shell 12 mounting the first heating module 41. The tobacco bowl 30 is accommodated in the mounting cavity 131 and is configured to contain a smoke-generating medium 200. A bottom wall 301 and a top wall 302 of the tobacco bowl 30 are each provided with a plurality of air holes 321, 311. The upper shell 12 is cooperatively installed on the lower shell 11 to seal the mounting cavity 131. An air inlet channel 132 communicating the outside with the mounting cavity 131 is formed within the housing 10. The first heating module 41 is configured to heat the top wall 302 so as to heat the smoke-generating medium 200 in the tobacco bowl 30 from the top wall 302. The second heating module 42 surrounding the mounting cavity 131 is configured to heat a side wall 303 of the tobacco bowl 30 so as to heat the smoke-generating medium 200 in the tobacco bowl 30 from the side wall 303.

Specifically, the air inlet channel 132 is formed in the upper shell 12. Alternatively, the air inlet channel 132 may be formed between the upper shell 12 and the lower shell 11.

Referring to FIGS. 1, 3, and 4, the hookah device with dual heating modules further includes a base support 14. The base support 14 is installed at a lower side of the mounting cavity 131 of the lower shell 11 and has a sealed air pipe 134 communicating with the mounting cavity 131. A buffer channel 135 communicating a bottom wall 301 of the accommodating cavity with the outside is further formed on the base support 14. The buffer channel 135 serves to equalize temperature during smoking and buffer water pressure after smoking is completed, thereby preventing excessive water from entering the tobacco bowl 30 through the main smoke path.

Referring to FIGS. 1 and 3, an annular sealing sleeve 141 is installed within the base support 14. The sealed air pipe 134 is formed within the annular sealing sleeve 141. The buffer channel 135 is formed between the annular sealing sleeve 141 and the base support 14.

During operation, the lower shell 11 is placed into a water container 50 via the base support 14. A protruding pipe at the top of the water container 50 is inserted into the sealed air pipe 134 and makes sealing contact with it. An air pipe 51 within the protruding pipe extends below the water surface in the water container 50. When a user inhales, smoke is drawn through the air pipe in the direction indicated by the arrow in FIG. 4 from a suction pipe 52 of the water container 50.

Referring to FIGS. 2, and 8 to 10, the tobacco bowl 30 includes a bowl body 31 for accommodating the smoke-generating medium 200 and a bowl cover 32 covering an opening of the bowl body 31. The top wall 302 is formed on the bowl cover 32. The bottom wall 301 is formed on a bottom of the bowl body 31. Referring to FIGS. 9 and 10, differing from Embodiment 1, in another embodiment, a handle 33 is installed on the bowl cover 32 for facilitating opening the bowl cover 32. The handle 33 is rotatably mounted on the bowl cover 32 and can be folded relative to the bowl cover 32. The bowl cover 32 can be snapped onto the bowl body 31 or simply placed on top of the bowl body 31. Alternatively, the top wall 302 could also be formed on the bowl body 31, in which case the bottom wall 301 would be formed on the bowl cover 32.

Referring to FIGS. 3, 8, and 9, the top wall 302 of the tobacco bowl 30 is recessed inward into the tobacco bowl 30 to form a first recess 322. A wall of the first recess 322 is provided with a plurality of the air holes 321. When the upper shell 12 is cooperatively installed on the lower shell 11, the bottom wall of the upper shell 12 contacts the top wall 302 of the tobacco bowl 30 and forms a heating area with the first recess 322 of the top wall 302, the heating area communicating the air inlet channel 132 with the air holes 321. This configuration not only causes the first heating module 41 to primarily heat the top surface of the tobacco bowl 30 that is offset from the first recess 322, preventing overheating and charring of the smoke-generating medium 200 within the tobacco bowl 30, but also allows the first heating module 41 to preheat the air in the heating area, ensuring that the air entering the tobacco bowl 30 is hot.

Specifically, a plurality of the first recesses 322 are formed, which are annular. The plurality of first recesses 322 are arranged concentrically and spaced apart on the top wall 302 of the tobacco bowl 30. Alternatively, the first recesses 322 may also be arranged in a spiral pattern on the top wall 302, or in a cross-shaped or other pattern in other embodiments. Specifically, a cross-section of the first recess 322 is arc-shaped. Alternatively, the cross-section of the first recess 322 could also be V-shaped, U-shaped, or rectangular.

Referring to FIGS. 3 and 10, the bottom wall 301 of the tobacco bowl 30 is recessed outward from the tobacco bowl 30 to form a second recess 312. The second recess 312 is annular. A plurality of the second recesses 312 are arranged concentrically and spaced apart on the bottom wall 301 of the tobacco bowl 30. The bottom wall 301 is provided with air holes 311; some of the air holes 311 are located within the second recesses 312, and some are located outside the second recesses 312.

Specifically, the tobacco bowl 30 is a metal bowl, such as an iron bowl, copper bowl, etc. The bowl body 31 is integrally formed, and the bowl cover 32 is integrally formed.

Referring to FIGS. 1, 2, and 4, the first heating module 41 is an electromagnetic heating module including an electromagnetic heating part 411 and an electromagnetic induction part 412. The electromagnetic heating part 411 emits a high-frequency electromagnetic signal to the electromagnetic induction part 412, causing the electromagnetic induction part 412 of the first heating module 41 to generate an eddy current effect and produce heat. The electromagnetic induction part 412 of the first heating module 41 is plate-shaped and forms the bottom wall of the upper shell 12. When the upper shell 12 is cooperatively installed on the lower shell 11, the electromagnetic induction part of the first heating module 41 contacts the top wall 302 of the tobacco bowl 30. Specifically, this electromagnetic induction part 412 is a magnetic alloy plate.

Specifically, a heat-resistant plate 122 spaced apart from the bottom wall of the upper shell 12 is further formed on a side of the bottom wall (the electromagnetic induction part 412) of the upper shell 12 away from the mounting cavity 131. The air inlet channel 132 is formed between the bottom wall of the upper shell 12 and the heat-resistant plate 122, serving as a heated buffer space. The bottom wall (the electromagnetic induction part 412) of the upper shell 12 is provided with a plurality of air holes 4121 to communicate with the mounting cavity 131. The heat-resistant plate 122 is preferably made of a material with heat insulation properties that does not interfere with electromagnetic induction, such as a mica sheet.

Alternatively, in another embodiment, the first heating module 41 is a resistive heating module including a resistive heating element, where the resistive heating element replaces the electromagnetic induction part 412. The resistive heating element of the first heating module 41 may be a thick film heating element, a thin film heating element, or a ceramic heating element.

Referring to FIGS. 1, 3, and 4, the side wall 303 of the tobacco bowl 30 includes an annular heating element, which is part of the second heating module 42. This annular heating element constitutes at least a portion of the side wall 303 or the entire side wall 303. The second heating module 42 includes a driving part and a heating element. The driving part, powered by the power supply module 20, causes the heating element to generate heat actively to heat the smoke-generating medium (tobacco paste) within the tobacco bowl 30.

Specifically, the side wall 303 of the tobacco bowl 30 includes an annular metal wall capable of electromagnetic induction. The second heating module 42 includes an electromagnetic heating part 421. The annular metal wall capable of electromagnetic induction serves as the electromagnetic induction heating element of the second heating module 42. The electromagnetic heating part 421 of the second heating module 42 emits a high-frequency electromagnetic signal to the annular metal wall, causing the annular metal wall to generate an eddy current effect and heat the smoke-generating medium 200 in the tobacco bowl 30. This solution enables the side wall 303 of the tobacco bowl 30 to generate heat actively, resulting in high heating rate and energy savings. Specifically, the side wall 303 can be the annular metal wall, or can includes the annular metal wall along with a buffer layer located on the inner or outer wall of the annular metal wall.

Specifically, the second heating module 42 further includes a thermal insulation layer 422 surrounding the electromagnetic heating part 421. This insulation layer can be an aerogel. In the present embodiment, a support forming the mounting cavity 131 is installed within the lower shell 11. The cavity wall of the mounting cavity 131 (made of non-electromagnetic induction material) is formed on the support. The winding coil of the electromagnetic heating part 421 is wound around the exterior of the support and inductively heats the side wall 303 of the tobacco bowl 30 through the cavity wall of the mounting cavity 131.

Specifically, a gap is formed between the cavity wall of the mounting cavity 131 and the tobacco bowl 30. A heat insulating member 112 is also provided at the bottom of the mounting cavity 131 to prevent the tobacco bowl 30 from damaging the bottom wall of the mounting cavity 131.

Specifically, the side wall of the tobacco bowl 30 could alternatively be a resistive heating ring. In this case, a power supply terminal electrically connected to the power supply module 20 is provided on the mounting cavity 131. When the tobacco bowl 30 is installed in the mounting cavity 131, the conductive terminal of the resistive heating ring located on the side wall of the tobacco bowl 30 plugs into or abuts against the power supply terminal, allowing the power supply module 20 to supply power to the resistive heating ring on the side wall 303 of the tobacco bowl 30, causing the resistive heating ring to generate heat. This resistive heating ring may be a resistance wire embedded in the side wall 303 of the tobacco bowl 30, or formed by a thin-film resistance heating sheet or thick-film resistance heating sheet, or it may be a ceramic heating wall.

In the present embodiment, the first heating module 41 is configured to heat the top wall 302 via the heating plate made of the electromagnetic induction part 412 (or resistive heating element) through heat transfer, thereby indirectly heating the smoke-generating medium 200 in the tobacco bowl 30. The second heating module is configured to directly heat the side wall 303 of the tobacco bowl 30 that is electromagnetically induced via the electromagnetic heating part 421, so as to directly heat the smoke-generating medium 200 in the tobacco bowl 30.

Specifically, the electromagnetic heating part 411 of the first heating module 41 is an electromagnetic coil wound within the upper shell 12. This electromagnetic coil is wound around the lateral center of the upper shell 12, forming a pancake or block shape. The electromagnetic heating part 421 of the second heating module 42 is an electromagnetic coil wound around the mounting cavity 131, forming an annular shape.

To prevent the heat from the first heating module 41 from affecting the power supply module 20 and the control circuit, a thermal insulation plate 123 is provided on the side of the first heating module 41 away from the mounting cavity 131. Preferably, the insulation plate is a mica insulation plate.

The hookah device with dual heating modules further includes a control circuit. The upper shell 12 is provided with a first temperature sensor for detecting the temperature of the first heating module 41 or the tobacco bowl 30. The lower shell 11 is provided with a second temperature sensor for detecting the temperature of the second heating module 42 or the tobacco bowl 30. The control circuit controls the first heating module 41 to maintain a first temperature range based on a first temperature detected by the first temperature sensor, and controls the second heating module 42 to maintain a second temperature range based on a second temperature detected by the second temperature sensor. Specifically, the first temperature range is greater than the second temperature range. The first heating module 41 operates at a higher temperature to preheat the air about to enter the tobacco bowl 30. The second heating module 42 operates at a lower temperature but has a larger heating area, thereby achieving uniform heating while preventing overheating and charring of the smoke-generating medium 200.

Preferably, the first temperature sensor is installed on the side of the electromagnetic heating part 411 away from the mounting cavity 131 for detecting the temperature of the electromagnetic heating part 411. The second temperature sensor is installed at the bottom wall of the mounting cavity 131 for detecting the temperature of the bottom wall 301 of the tobacco bowl 30. Alternatively, a first temperature sensor can be directly provided on the bottom wall of the upper shell 12 to detect the temperature of the top wall 302 of the tobacco bowl 30.

Specifically, the first temperature range is 200-320° C., and the second temperature range is 100-200° C. Preferably, the first temperature range is 230-280° C., and the second temperature range is 120-200° C. Compared to existing hookah heating technologies, the present invention significantly reduces the heating temperature while increasing heating efficiency, preventing charring of the smoke-generating medium 200 and improving user experience. Furthermore, the present invention limits the side heating temperature of the tobacco bowl 30 to below 200° C., preventing localized overheating of the smoke-generating medium 200 while ensuring uniform heating.

Referring to FIG. 1, the power supply module 20 includes a battery 21 and a conversion control circuit for converting and controlling the power from the battery 21. The hookah device with dual heating modules further includes a first circuit board 251 and a second circuit board 252. The control circuit is installed on the first circuit board 251. Part of the conversion control circuit is installed on the first circuit board 251, and part is installed on the second circuit board 252. The conversion control circuit converts the electrical energy from the battery into direct current to power the first circuit board 251 and the second circuit board 252, and converts the battery's electrical energy into driving electrical signals to power the first heating module 41 and the second heating module 42.

Referring to FIGS. 5 and 6, the lower shell 11 and the upper shell 12 have a first annular wall 111 and a second annular wall 121 surrounding the mounting cavity 131 on their opposite sides, respectively. When the lower shell 11 and the upper shell 12 are cooperatively installed, the first annular wall 111 and the second annular wall 121 cooperate with each other to seal the mounting cavity 131. Specifically, a sealing member is provided around the electromagnetic induction part 412 to seal the gap between the electromagnetic induction part 412 and the edge of the tobacco bowl. During operation, the electromagnetic induction part 412 closely contacts the top wall 302 of the tobacco bowl 30, forming a high-temperature heating zone.

Referring to FIG. 5, the hookah device with dual heating modules further includes an electrical connection assembly. The electrical connection assembly includes an elastic probe 261 installed on one of the first annular wall 111 and the second annular wall 121, and a conductive block 262 installed on the other of the first annular wall 111 and the second annular wall 121 and corresponding to the elastic probe 261. As shown in FIG. 7, when the lower shell 11 and the upper shell 12 are cooperatively installed, the elastic probe 261 contacts the conductive block 262 to establish an electrical connection with it, so that the second heating module 42 is electrically connected to the power supply module 20 via the electrical connection assembly.

Referring to FIGS. 2 and 6, the first annular wall 111 is provided with a slot communicating its outer edge with its inner edge. The sealing member is positioned offset from the slot. When the lower shell 11 and the upper shell 12 are cooperatively installed, the first annular wall 111 and the second annular wall 121 are in sealed contact via the sealing member, and an air inlet 133 communicating with the air inlet channel 132 is formed at the slot. The air inlet 133 is located between the lower shell 11 and the upper shell 12, eliminating the need to form a separate air inlet 133 in the upper shell 12 or lower shell 11, thus reducing costs. Alternatively, the air inlet 133 could also be located on the upper shell 12. The slot could also be provided on the second annular wall 121.

Referring to FIGS. 5 and 6, the upper shell 12 and the lower shell 11 are relatively independent, allowing the upper shell 12 to be completely removed from the lower shell 11. The first annular wall 111 and the second annular wall 121 are provided with magnetic components that magnetically attract and cooperate, thereby enabling the lower shell 11 and the upper shell 12 to be relatively positioned and attracted to each other without the need for snap-fit positioning, making operation convenient and improving user experience. Specifically, the magnetic components includes a plurality of first magnet blocks 61 provided in the first annular wall 111 and a plurality of second magnet blocks 62 provided in the second annular wall 121. The plurality of first magnet blocks 61 are arranged in the first annular wall 111 at intervals around the center of the first annular wall 111 and have opposite magnetic polarities. Specifically, the first magnet blocks 61 with different magnetic polarities are arranged adjacent to each other. The plurality of second magnet blocks 62 are arranged in the second annular wall 121 at intervals around the center of the second annular wall 121 and have opposite magnetic polarities. Specifically, the second magnet blocks 62 with different magnetic polarities are arranged adjacent to each other. The opposing surfaces of the corresponding first magnet blocks 61 and second magnet blocks 62 have opposite magnetic polarities. In such a way, the lower shell 11 and the upper shell 12 can be automatically aligned via the magnetism of the magnetic components, thereby facilitating precise alignment of the electrical connection assembly between the lower shell 11 and the upper shell 12.

Specifically, the second annular wall 121 and the first annular wall 111 are further provided with alignment and engagement components. The alignment and engagement components include an engagement recess 63 provided on the first annular wall 111 and an engagement protrusion 64 provided on the second annular wall 121. The engagement recess 63 and the engagement protrusion 64 engage in a concave-convex manner to achieve circumferential positioning between the first annular wall 111 and the second annular wall 121.

Specifically, the upper shell 12 is further provided with a display screen 22 and a button 23. The user controls the operation of the internal control circuit via the button 23. The control circuit controls the display screen 22 to show the current operating status, battery level information of the battery 21, etc. The upper shell 12 also has a charging interface 24 connected to the power supply module 20. For example, the charging interface 24 is a Type-C interface, etc.

Embodiment 2

Referring to FIG. 11, differing from Embodiment 1, in the present embodiment, the top wall 302 of the tobacco bowl 30 includes a metal top wall 302 capable of electromagnetic induction. The first heating module 41 includes an electromagnetic heating part 411. The electromagnetic heating part 411 of the first heating module 41 emits a high-frequency electromagnetic signal to the metal top wall 302, causing the metal top wall 302 to generate an eddy current effect and heat the smoke-generating medium 200 in the tobacco bowl 30. This solution enables the top wall 302 of the tobacco bowl 30 to generate heat actively, resulting in a high heating rate and energy savings.

Referring to FIG. 11, to facilitate sealing the mounting cavity 131, the bottom wall of the upper shell 12 is a non-magnetic insulating plate 412a which is provided with a plurality of air holes 4121. When the upper shell 12 is placed on the lower shell 11, the insulating plate 412a covers the top wall 302 of the tobacco bowl 30, and the mounting cavity 131 is sealed by a sealing member around the perimeter. The air inlet channel 132 is located on the side of the insulating plate 412a away from the mounting cavity 131.

Specifically, the insulating plate 412a is a thermally conductive plate with good thermal conductivity, such as a ceramic plate. A heat-resistant plate 122 is further formed on the side of the insulating plate 412a away from the mounting cavity 131. The air inlet channel 132 is formed between the insulating plate 412a and the heat-resistant plate 122. The bottom wall (the electromagnetic induction part 412) of the upper shell 12 is provided with a plurality of air holes 4121 to communicate with the mounting cavity 131. The heat-resistant plate 122 is preferably made of a material with heat insulation properties that does not interfere with electromagnetic induction, such as a mica sheet.

Embodiment 3

Differing from Embodiment 1 and Embodiment 2, in the present embodiment, the second heating module 42 is a resistive heating module including a resistive heating element, or the second heating module 42 is an electromagnetic heating module including an electromagnetic heating part and an electromagnetic induction part. The resistive heating element or the electromagnetic induction part of the second heating module 42 is annular and forms the cavity wall of the mounting cavity 131.

The resistive heating element of the second heating module 42 may be a thick film heating element, a thin film heating element, or a ceramic heating element.

Specifically, after the tobacco bowl 30 is installed in the mounting cavity 131, the side wall 303 contacts the cavity wall of the mounting cavity, allowing the resistive heating element or the electromagnetic induction part to heat the tobacco bowl 30 through heat conduction. The side wall 303 of the tobacco bowl 30 is preferably made of a heat-resistant material with good thermal conductivity, such as metal or ceramic.

In the aforementioned embodiments, the battery 21 is fixedly installed in the upper shell 12. Differing from this, and referring to FIG. 12, in Embodiment 3, the battery 21 is a removable battery. The upper side of the upper shell 12 is provided with a battery compartment 120 for installing the battery 21. The battery case containing the battery 21 is installed in the battery compartment 120. When charging is required, the battery case can be simply pulled out. Furthermore, a battery switch assembly is provided between the battery compartment 120 and the battery case. The battery switch assembly includes a manual switch 212, a rotary transmission member 213, and a latch 214. The rotary transmission member 213 is rotatably mounted in the upper shell 12. Under normal conditions, the rotary transmission member 213 is rotated by an elastic member, causing the latch 214 to rotate inward into the battery compartment 120 to engage with the side wall of the battery case, preventing the battery case from accidentally disengaging from the battery compartment 120. When it is necessary to remove the battery case, the manual switch 212 is operated. The manual switch 212 drives its connecting rod to move downward, pressing against the inner side of the pivot point of the rotary transmission member 213, causing the rotary transmission member 213 to rotate such that the latch 214 moves away from the battery case. The battery case can then be pulled out for charging the battery 21. After charging, the battery case is inserted back into the battery compartment 120.

FIG. 13 illustrates Embodiment 4 of the present invention. Differing from the above embodiments, in the present embodiment, the inlet of the air inlet 133 is located on the lower shell 11. The outer wall of the lower shell 11 extends upward to form the first annular wall 111, creating a mounting groove. The second annular wall 121 of the upper shell 12 extends downward into the mounting groove, and the outer wall of the lower shell 11 contacts the end of the outer wall of the upper shell 12. The annular sealing sleeve 141 within the base support 14 is in direct contact with the base support 14, and no buffer channel is formed. The protruding pipe 501 at the top of the water container 50 is directly inserted into the annular sealing sleeve 141 for sealing to communicate with the mounting cavity 131. The top wall 301 of the tobacco bowl 30 serves as the electromagnetic induction part. The electromagnetic heating part 411 of the first heating module 41 directly emits a high-frequency electromagnetic signal to the top wall 301 of the tobacco bowl 30, causing the top wall 301 of the tobacco bowl 30 to generate an eddy current effect and produce heat.

In comparison with the prior arts, the present invention provides two sets of heating modules arranged around the tobacco bowl 30. The first heating module 41 is configured to heat the top wall 302 of the tobacco bowl 30 directly or indirectly via electromagnetic heating or resistive heating. The second heating module 42 is configured to heat the side wall 303 of the tobacco bowl 30 directly or indirectly via electromagnetic heating or resistive heating. In such a way of simultaneously heating the tobacco bowl 30 from the top wall and the side wall using the two heating modules, the heating rate is effectively increased, and the heating within the tobacco bowl 30 becomes more uniform, leading to an improved user experience.

The above descriptions are merely preferred embodiments of the present application and are not intended to limit the scope of the application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application should be included within the protection scope of the present application.