Bowl for electric hookah

By designing a tobacco cup with a built-in electric heating element in the electric hot water tobacco pipe, and adopting a three-layer cup wall structure and a one-way air vent, the problems of uneven heating and difficulty in filling with tobacco are solved, achieving the effects of uniform heating, easy cleaning and portability.

WO2026092171A1PCT designated stage Publication Date: 2026-05-07ZHOU CHENGLONG
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHOU CHENGLONG
Filing Date
2025-10-16
Publication Date
2026-05-07

AI Technical Summary

Technical Problem

Existing electric hot water tobacco bottles suffer from uneven heating, and the integrated design of the heating cup and the bottle body makes it difficult to fill with tobacco, inconvenient to clean, bulky, and inconvenient to carry, posing safety hazards.

Method used

Design a cigarette cup with a built-in electric heating element. It adopts a three-layer cup wall structure, with the electric heating element sandwiched in a hollow cavity. The cup body is detachable and equipped with a one-way vent and a temperature sensor to achieve uniform heating and easy cleaning and replacement.

Benefits of technology

It achieves uniform heating, facilitates the loading and cleaning of smoke materials, reduces safety risks, and improves portability and style diversity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2025128047_07052026_PF_FP_ABST
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Abstract

A bowl for an electric hookah. A vapor hole for vapor to pass through is formed at the center of the inner bottom of the bowl (5); an electric heating member (54) is provided in the bowl (5), and the bowl (5) is of an integrated structure and comprises an inner bowl shell (51) and an outer bowl shell (52) fixedly sleeved on the inner bowl shell and in watertight connection with the inner bowl shell (51); a hollow cavity (53) is defined between the inner bowl shell (51) and the outer bowl shell (52), that is, the hollow cavity (53) is provided between the outer wall of the inner bowl shell (51) and the inner wall of the outer bowl shell (52); in the hollow cavity (53), the electric heating member (54) abuts against the outer wall of the inner bowl shell (51), and the electric heating member (54) is away from the inner wall of the outer bowl shell (52), so that the electric heating member (54) has an expansion space in the hollow cavity (53); the electric heating member (54) is sandwiched and sealed in a bowl body of the bowl (5) without being exposed, thereby forming a sealed surface of the bowl body of the bowl (5) having a three-layer bowl wall structure. The bowl (5) can be washed with water, making it hygienic and convenient; the position of the electric heating member (54) in the bowl (5) is fixed, enabling fast and uniform heating.
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Description

Electric hot water pipe with tobacco cup Technical Field

[0001] This utility model relates to the technical field of smoking utensils for hookahs, specifically to a smoking cup for an electric hot water hookah. Background Technology

[0002] Hookah is a tobacco substitute popular among some ethnic minorities in my country and in the Middle East. It uses special hookah tobacco that is heated to produce smoke, which is then filtered through water before being inhaled. A hookah is the device used for smoking hookah. Existing hookahs generally include a pipe, a straw, and a water bottle. The pipe has a fixed outlet, and various parts with different outlet positions can be fitted to the pipe, allowing the device to be used by multiple consumers at once. A typical hookah usually includes a bowl, a tray, a pipe, an exhaust pipe, and a bottle. A soft smoking hose is connected to the exhaust pipe, and a mouthpiece is attached to the end of the hose for the user to smoke. Depending on the heating method of the tobacco, hookahs can be divided into electric hot water hookahs and open flame hookahs. Open flame hookahs involve placing tobacco in the bowl, filling the bottle with water, covering the bowl with a layer of perforated aluminum foil, and then placing some lit charcoal on the foil to heat the tobacco and produce smoke. The smoke then enters the bottle through the pipe, is filtered by water, and is inhaled through the soft tubing. The airflow path between the bowl and the mouthpiece on the tubing is the hookah pipe. Often, the tobacco on the surface is completely burned while the tobacco at the bottom remains uncooked, resulting in incomplete combustion and waste. Furthermore, open flame hookahs pose a certain degree of danger and are severely limited in terms of suitable locations. Electric water pipes use an electric heating element inside the pipe to heat the tobacco in the heating cup and produce smoke. The heating is even and less wasteful. In contrast, conventional electric water pipes use a design where the heating cup is integrated with the pipe body, meaning the heating cup cannot be disassembled. This makes it difficult to fill with tobacco, replace it, clean it, and the overall size of the water pipe is large and inconvenient to carry. Summary of the Invention

[0003] The purpose of this invention is to provide a water-washable and evenly heated electric hot water bottle with a tobacco cup.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an electric hot water tobacco cup, wherein the bottom center of the tobacco cup has a smoke hole for smoke to pass through, the tobacco cup has a built-in electric heating element, the tobacco cup is an integral structure including an inner shell and an outer shell fixedly sleeved on the inner shell and watertight connected to the inner shell, a hollow cavity is defined between the inner shell and the outer shell, that is, there is a hollow cavity between the outer wall of the inner shell and the inner wall of the outer shell, the electric heating element is attached to the outer wall of the inner shell in the hollow cavity, and the electric heating element is far away from the inner wall of the outer shell, so that the electric heating element has an expansion space in the hollow cavity, the electric heating element is clamped and sealed in the tobacco cup body and not exposed, thus realizing a three-layer cup wall structure with a sealed and washable surface.

[0005] As an improvement: the tobacco cup is generally cup-bowl shaped, that is, both the inner and outer shells of the tobacco cup have a body and a bottom. The electric heating element is attached to the body of the inner shell. The electric heating element has a connection point on the outer surface of the bottom of the tobacco cup that is electrically connected to the electronic control component of the electric hot water tobacco bottle. The electronic control component is electrically connected to the connection point of the tobacco cup through an elastic pin electrode.

[0006] As an improvement: the bottom of the outer shell of the tobacco cup is provided with an inner groove that cooperates with the temperature sensing probe in the electronic control component of the electric hot water tobacco bottle, and the inner groove is located away from the connection contact point.

[0007] As an improvement, the outer shell of the cup is provided with a water-sealed one-way vent hole, which is connected to the hollow cavity and can vent air out in one direction.

[0008] As an improvement, the unidirectional air outlet is located on the smoke cup away from the position corresponding to the electric heating element.

[0009] As an improvement, the one-way vent is achieved by a silicone plug embedded in the outer shell of the cup. The silicone plug has a micro-pore in the center that leads to the hollow cavity. This micro-pore is water-sealed under atmospheric pressure.

[0010] As an improvement, the one-way vent is achieved by a silicone plug embedded in the outer shell of the cup. The silicone plug has a micro-pore in the center that leads to the hollow cavity. This micro-pore is water-sealed under atmospheric pressure.

[0011] The beneficial effects of this utility model are as follows: The tobacco cup of this utility model has a built-in electric heating element, the surface of the tobacco cup is sealed, it can be detached for holding tobacco, and the tobacco cup is washable, making it hygienic and convenient. It is also easy to carry and replace. Furthermore, the electric heating element is fixed in position inside the tobacco cup, ensuring fast and even heating, effectively protecting the electric heating element and avoiding problems such as uneven heating, slow heating from a distant heating source, and easy misalignment found in existing tobacco cups. The tobacco cup with a built-in electric heating element is not limited by the shape of the tobacco chamber of the tobacco pot; only the lower part needs to be connected. This reduces design limitations, allowing for diverse styles and shapes, powerful functionality, and strong compatibility.

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 is a structural schematic diagram of an electric hot water bottle with the tobacco cup of this utility model.

[0014] Figure 2 is a cross-sectional view of Figure 1.

[0015] Figure 3 is a schematic diagram of the exploded structure of Figure 1.

[0016] Figure 4 is a schematic diagram of the shell structure in Figure 1.

[0017] Figure 5 is a schematic diagram of the structure of the tobacco cup of this utility model.

[0018] Figure 6 is a cross-sectional view of the tobacco cup of this utility model. Detailed Implementation

[0019] As shown in Figures 1, 2, 3, 4, 5, and 6, An embodiment of the electric hot water tobacco cup of this utility model includes a water tank 1 for holding liquid and filtering smoke, and a pot body 3 detachably connected to the water tank 1 via a connector 2. The pot body 3 is equipped with an electronic control component and a power supply 4 for supplying power to the electronic control component. The upper part of the pot body has a smoke chamber 31 connected to the electronic control component. The electronic control component has an electrode connector on the inner wall of the smoke chamber 31. A tobacco cup 5 with a built-in electric heating element 54 is detachably connected to the smoke chamber 31. That is, the electric heating element is clamped in the tobacco cup body and not exposed, so that the surface of the tobacco cup 5 is sealed and washable. A smoke guide tube 6 is also provided in the pot body 3. One end of the smoke guide tube 6 is connected to the tobacco cup 5, and the other end extends through the connector into the water tank 1. The water tank or the surface of the pot body has a smoke inlet that connects to the water tank 1 via a smoke duct. The tobacco cup is heated under the control of the electronic control component to generate smoke, and the smoke is transported to the water tank for filtration via the smoke guide tube 6. The filtered smoke is transmitted to the smoke inlet 91 via the smoke duct 9.

[0020] The pot body 3 includes an upper pot body with a smoke chamber 31 and a lower pot body equipped with electronic control components and power supply and other electronic components. The smoke chamber 31 is formed in the upper pot body by an integrally molded sealing member 8. The top of the smoke guide tube 6 passes through the sealing member and forms a smoke guide port that is compatible with the tobacco cup and can communicate with it at the bottom of the smoke chamber 31. In the lower pot body, below the sealing member, there is an I-shaped mounting plastic member 7. The mounting plastic member 7 has a central hole channel 71 and a circuit mounting cavity 72 that is separated from the central hole channel 71. The electronic control components and power supply are installed in the circuit mounting cavity 72. The smoke guide tube 6 is connected to the water tank 1 through the central hole channel 71. The top of the central hole channel 71 protrudes from the top surface of the mounting plastic member 7 and abuts against the bottom of the sealing member, so that the central hole channel 71 is independent of the mounting plastic member 7, thereby isolating the central hole channel for smoke delivery from the distribution area of ​​electronic components.

[0021] In this embodiment, the smoke guide tube passes through a central hole channel 71 with an inner diameter larger than the smoke guide tube, forming a tube-in-tube structure. Specifically, an air channel is formed between the smoke guide tube and the inner wall of the central hole channel, and this air channel is a component of the smoke extraction duct. In this embodiment, the smoke inlet is located on the upper body of the kettle. A smoke exhaust channel is opened within the sealing element, connecting to the smoke inlet on the surface of the upper body. The other end is located on the lower surface of the sealing element, connecting to the central hole channel 71 and away from the smoke guide tube. The tube-in-tube structure significantly saves space, and its upright design allows for easy disassembly and storage; the lower part of the smoke guide tube can also be designed as a telescopic tube.

[0022] An electric hot water tobacco cup is provided. The cup 5 has a central opening at its bottom for smoke to pass through. An electric heating element 54 is built into the cup. The cup is a one-piece structure comprising an inner shell 51 and an outer shell 52 fixedly fitted onto the inner shell 51 and watertightly connected to it. A hollow cavity is defined between the inner shell and the outer shell, i.e., a hollow cavity exists between the outer wall of the inner shell 51 and the inner wall of the outer shell 52. Within this hollow cavity, the electric heating element 54 rests against the outer wall of the inner shell 51, with the heating element 54 positioned away from the inner wall of the outer shell 52. This allows for expansion space within the hollow cavity. The heating element is enclosed within the cup body and not exposed, resulting in a three-layered cup body structure that is washable. The built-in heating element design facilitates easy replacement. The cigarette cup is generally cup-shaped, meaning both the inner shell 51 and the outer shell 52 have a body and a bottom. The electric heating element 54 is attached to the body of the inner shell 51. The electric heating element 54 has a contact point 56 on the outer surface of the bottom of the cup that is electrically connected to the electronic control component. The electronic control component is electrically connected to the contact point via an elastic pin electrode 32. The outer shell has a water-sealed one-way vent, which communicates with the hollow cavity, allowing for unidirectional exhaust and depressurization of the hollow cavity. In this embodiment, the one-way vent is achieved through a silicone plug 9 embedded in the outer shell. This silicone plug has a micro-pore (not shown in the diagram) at its center leading to the hollow cavity, which is water-sealed under atmospheric pressure. This solves the problem of potential compression and cracking of the hollow cavity 53 caused by the expansion from electric heating, greatly extending the lifespan of the cigarette cup and improving its overall integrity. In this embodiment, the one-way vent is located at the bottom of the cup, away from the electric heating element. It also allows for the installation of a non-enclosed baffle between the cup body and the bottom within the hollow cavity, further ensuring waterproofness and safety.

[0023] To ensure reliable electrical connection and the washability of the tobacco cup, the electronic control component includes a temperature sensing component with a temperature sensing probe 33. The temperature sensing probe extends elastically from the tobacco chamber 31 and abuts against the bottom of the cup shell 52 to sense temperature. To ensure stable connection and accurate temperature sensing, the bottom of the tobacco cup shell 52 in this embodiment is provided with an inner groove 55 that mates with the temperature sensing probe. The inner groove 55 is located away from the connection contact point. This recessed design achieves an insertion limiting fit, bringing the temperature sensing point closer to the tobacco, resulting in more sensitive and accurate temperature transmission.

[0024] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended claims.

Claims

1. A smoke cup for an electric hot water pipe, wherein the inner bottom of the smoke cup (5) has a smoke hole for smoke to pass through, characterized in that: The cigarette cup (5) has a built-in electric heating element (54). The cigarette cup is an integral structure including an inner shell (51) and an outer shell (52) that is fixedly sleeved on the inner shell (51) and water-sealed to the inner shell. A hollow cavity is defined between the inner shell and the outer shell. That is, there is a hollow cavity between the outer wall of the inner shell (51) and the inner wall of the outer shell (52). The electric heating element (54) is attached to the outer wall of the inner shell (51) in the hollow cavity (53), and the electric heating element (54) is far away from the inner wall of the outer shell (52), so that the electric heating element has an expansion space in the hollow cavity. The electric heating element is clamped and sealed in the body of the cigarette cup and is not exposed. The surface of the cigarette cup (5) with a three-layer cup wall structure is sealed and washable.

2. The tobacco cup for an electric hot water tobacco pipe according to claim 1, characterized in that: The tobacco cup is generally cup-bowl shaped, that is, the inner shell (51) and outer shell (52) of the tobacco cup both have a body and a bottom. The electric heating element (54) is attached to the body of the inner shell (51). The electric heating element (54) has a connection contact point on the outer surface of the bottom of the tobacco cup that is electrically connected to the electronic control component of the electric hot water tobacco bottle. The electronic control component is electrically connected to the connection contact point of the tobacco cup through an elastic pin electrode.

3. The tobacco cup for an electric hot water tobacco pipe according to claim 2, characterized in that: The bottom of the outer shell (52) of the tobacco cup is provided with an inner groove (55) that cooperates with the temperature sensing probe in the electronic control component of the electric hot water tobacco bottle. The inner groove (55) is located away from the connection contact point.

4. The tobacco cup for an electric hot water tobacco pipe according to claim 1, 2, or 3, characterized in that: The outer shell of the cup is provided with a water-sealed one-way vent hole, which is connected to the hollow cavity and can vent air out in one direction.

5. The tobacco cup for an electric hot water tobacco pipe according to claim 4, characterized in that: The one-way vent is located on the smoke cup (5) away from the position corresponding to the electric heating element (54).

6. The tobacco cup for an electric hot water tobacco pipe according to claim 4, characterized in that: The one-way vent is achieved by a silicone plug embedded in the outer shell of the cup. The silicone plug has a micro-pore in the center that leads to the hollow cavity. The micro-pore is water-sealed under atmospheric pressure.

7. The tobacco cup for an electric hot water tobacco pipe according to claim 5, characterized in that: The one-way vent is achieved by a silicone plug (9) embedded in the outer shell of the cup. The silicone plug has a micro-vent in the center that leads to the hollow cavity. The micro-vent is water-sealed under atmospheric pressure.

Citation Information

Patent Citations

  • Heating cup assembly for hookah and hookah device

    CN113615872A

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    CN119073661A

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    CN119302459A

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