Heating structure of electric heating water cigarette

Abstract

The utility model provides a heating structure of an electric hot water cigarette, which comprises a shell, an insulating base body and a first heating element, the insulating base body is fixedly arranged in the shell and is provided with a concave accommodating cavity with an upper opening, and a heat conducting cup, the first heating element, an accommodating cup and a cigarette material cup are sequentially assembled in the accommodating cavity from outside to center, a fresh air inlet is formed in the insulation base body, a preheating channel communicated with the fresh air inlet is arranged between the outer wall of the heat conduction cup and the inner wall of the containing cavity, namely, the preheating channel is arranged on the outer back face of the heat conduction cup in a surrounding mode, the containing cup is arranged in the heat conduction cup in a sleeved mode with a gap, and an airflow heating gap space is formed between the containing cup and the heat conduction cup. The first heating element is fixedly arranged in the airflow heating gap space, gas in the preheating channel on the outer back face of the heat conduction cup is preheated through heat conduction of the cup body of the heat conduction cup, the low-temperature preheating channel adopts a mode of heat exchange with the heating element in a dividing wall mode, namely the preheating channel actually recycles waste heat to preheat air, and stable and accurate temperature control of the heating element is guaranteed.

Description

Technical Field

[0001] This utility model relates to a hookah device, specifically a hookah device that uses air-heated smoke to form an aerosol. Background Technology

[0002] Hookah is a method of smoking tobacco products using a special tool called a "hookah," which is filtered through water (or other liquid). Charcoal is typically used for lighting, but the carbon monoxide and large amount of ash produced during the combustion of charcoal pollute the air in smoking areas and are harmful to health when inhaled. Furthermore, the carbonization and combustion of charcoal during production releases dense, oily fumes, causing significant damage to surrounding plants and people's lives. To overcome these problems, a hookah heating pan can be used, employing an electric heat source to directly heat the tobacco. By controlling the temperature, the effective substances in the tobacco can be introduced into the gas, while avoiding the production of harmful substances such as carbon monoxide and ash. However, the tobacco in the heating pan is prone to uneven heating, resulting in inefficient tobacco utilization. Some hookah devices use air to heat the tobacco, but the external air is directly connected to the heating element, significantly impacting the temperature control of the heating element. Moreover, the inability to recover waste heat severely affects the connection and lifespan of electronic components, especially the electrical connection switches near the heating element, leading to frequent malfunctions and preventing the installation of magnetic components. Summary of the Invention

[0003] The purpose of this invention is to provide a heating structure for electric hot water flue gas that provides stable heating and efficient heat utilization.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a heating structure for an electric hot water fume, including a shell, an insulating substrate fixed inside the shell, and a first heating element. The insulating substrate has a recessed cavity with an upper opening at its center. Within the cavity, a heat-conducting cup, a first heating element, a receiving cup, and a detachable fume cup for holding fume are sequentially assembled from the outside to the center. A smoke inlet leading to a smoke channel is provided at the center of the fume cup. A fresh air inlet is provided on the insulating substrate. A preheating channel communicating with the fresh air inlet is provided between the outer wall of the heat-conducting cup and the inner wall of the receiving cavity, i.e., the preheating channel surrounds the outer back of the heat-conducting cup. The receiving cup is fitted inside the heat-conducting cup with a gap, thereby forming an airflow heating gap space between the receiving cup and the heat-conducting cup. The element is fixed in the airflow heating gap space. The first heating element heats the gas in the airflow heating gap space and preheats the gas in the preheating channel on the outer back of the heat-conducting cup through heat conduction of the cup body. The heat-conducting cup has a first airflow port that connects the airflow heating gap space and the preheating channel. The container cup has an air inlet at a position away from and higher than the first airflow port that introduces the gas in the airflow heating gap space into the tobacco cup. The air inlet is higher in height than the smoke inlet. The air enters the airflow heating gap space after being preheated through the preheating channel. The air is heated by the first heating element in the airflow heating gap space to form a high-temperature airflow, which then enters the tobacco cup. The high-temperature airflow heats the tobacco in the tobacco cup, causing it to form smoke, which enters the water bottle liquid filter through the smoke channel and is then discharged for smoking.

[0005] As an improvement: the cavity of the insulating substrate is provided with several ribs that elevate the heat-conducting cup, and the ribs abut against the outer wall of the heat-conducting cup to form a preheating channel.

[0006] As an improvement: the first heating element is fixedly wound around the inner wall of the heat-conducting cup or the outer wall of the receiving cup, and the preheating channel is set on the back of the heat-conducting cup corresponding to the position of the heating element.

[0007] As an improvement, the air inlet is located on the rim of the container cup, so that the air inlet is far away from the smoke inlet at the highest point of the container cup.

[0008] As an improvement: the first air inlet is located on the bottom of the heat-conducting cup, and the fresh air inlet is located on the insulating substrate corresponding to the position of the upper cavity wall of the receiving cavity.

[0009] As an improvement: the fresh air inlet can be closed via a movable door on the housing.

[0010] The beneficial effects of this invention are as follows: Before the air enters the heating element, it is preheated. The low-temperature preheating channel uses a heat exchange mode between the preheating channel and the heating element, meaning the preheating channel effectively recovers waste heat to preheat the air. This ensures stable and precise temperature control of the heating element, resulting in high reliability. Furthermore, the preheating channel is sandwiched between the heat-conducting cup and the insulating substrate, serving both as insulation and a heat-preserving layer in standby mode, maximizing the efficiency of waste heat utilization. The entire heating structure has a reasonable layout, effectively protecting the electronic components.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of one embodiment of the heating structure of the electric hot water fume of this utility model.

[0013] Figure 2 yes Figure 1 A sectional view.

[0014] Figure 3 yes Figure 1 A schematic diagram of the explosion structure. Detailed Implementation

[0015] like Figure 1 , Figure 2 , Figure 3As shown, the heating structure of the electric hot water fume of this utility model includes a shell 1, an insulating substrate 2 fixed inside the shell 1, and a first heating element 3. The insulating substrate 2 has a recessed receiving cavity with an upper opening at its center. The insulating substrate is an integrally molded silicone body. In the receiving cavity, from the outside to the center, a heat-conducting cup 4, the first heating element 3, a receiving cup 5, and a detachable fume cup 6 for receiving fume are assembled in sequence. A fume inlet 61 leading to a fume channel 9 is provided at the center of the fume cup. A fresh air inlet 21 is opened on the insulating substrate 2. A preheating channel 7 connected to the fresh air inlet 21 is provided between the outer wall of the heat-conducting cup and the inner wall of the receiving cavity. That is, the preheating channel surrounds the outer back of the heat-conducting cup. The receiving cup is fitted inside the heat-conducting cup with a gap, thereby forming an airflow heating gap space 8 between the receiving cup and the heat-conducting cup. The first heating element 3 is fixed in the airflow heating gap space. To minimize heat transfer loss, in this embodiment, the first heating element is fixedly wound around the inner wall of the heat-conducting cup or the outer wall of the receiving cup. The preheating channel is located on the back of the heat-conducting cup corresponding to the position of the heating element. The receiving cavity of the insulating substrate 2 is provided with several ribs that elevate the heat-conducting cup, forming a preheating channel by the ribs abutting against the outer wall of the heat-conducting cup. The first heating element heats the gas in the gas-heating gap space and preheats the gas in the preheating channel on the outer back of the heat-conducting cup through heat conduction via the cup body. The heat-conducting cup has a first airflow port 41 connecting the gas-heating gap space and the preheating channel. The first airflow port 41 is located on the bottom of the heat-conducting cup. A fresh air inlet 21 is located on the insulating substrate 2 corresponding to the position on the upper cavity wall, extending the preheating channel and improving the preheating effect. The container cup 5 has an air inlet 51 located away from and above the first airflow inlet 41, which introduces gas from the airflow heating gap space into the tobacco cup 6. The air inlet 51 is higher in height than the smoke inlet 61. In this embodiment, the air inlet 51 is located on the rim of the container cup, so that the air inlet 51 is far from the smoke inlet 61 at the highest point of the container cup. Air is preheated through the preheating channel and enters the airflow heating gap space. In the airflow heating gap space, it is heated by the first heating element to form a high-temperature airflow, which then enters the tobacco cup. The high-temperature airflow heats the tobacco in the tobacco cup, causing it to form smoke, which is then filtered through the smoke channel into the water bottle and then discharged for inhalation. In this invention, the smoke inlet 61 is located at the center of the bottom of the tobacco cup, eliminating the need to add a channel in the center of the tobacco cup to raise the smoke inlet 61 and redirect it to the smoke channel, thus reducing restrictions on the tobacco cup and increasing compatibility. In this embodiment, the fresh air inlet 21 can be closed through a movable door on the housing, so that the preheating channel also serves to keep warm when the first heating element is not working or in standby mode. This invention uses a cup wall heating method instead of a cup lid heating method. As a non-moving, normally open component, the cup wall has better stability of its components and reliability of electrical connections, resulting in a longer lifespan and more reliable performance of the entire machine.

[0016] 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 heating structure for an electric hot water fume hood, characterized in that: The device includes a housing (1), an insulating substrate (2) fixed inside the housing (1), and a first heating element (3). The insulating substrate (2) has a recessed cavity with an upper opening at its center. Within the cavity, a heat-conducting cup (4), the first heating element (3), a container cup (5), and a detachable tobacco cup (6) for holding tobacco are sequentially assembled from the outside to the center. A smoke inlet (61) leading to a smoke channel (9) is provided at the center of the tobacco cup. A fresh air inlet (21) is provided on the insulating substrate (2). A preheating channel (7) connected to the fresh air inlet (21) is provided between the outer wall of the heat-conducting cup and the inner wall of the container cavity. That is, the preheating channel surrounds the outer back of the heat-conducting cup. The container cup is fitted inside the heat-conducting cup with a gap, thereby forming an airflow heating gap space (8) between the container cup and the heat-conducting cup. The first heating element (3) is fixed in the airflow heating gap space. Within the gap space, the first heating element heats the gas in the gap space by heating the airflow, and preheats the gas in the preheating channel on the outer back of the heat-conducting cup by conducting heat through the cup body. The heat-conducting cup has a first airflow port (41) that connects the airflow heating gap space with the preheating channel (7). The container cup (5) has an air inlet (51) at a position far away from and higher than the first airflow port (41) that introduces the gas in the airflow heating gap space into the tobacco cup (6). The air inlet (51) is higher than the smoke inlet (61) in height. The air enters the airflow heating gap space after being preheated through the preheating channel. The airflow is heated by the first heating element in the airflow heating gap space to form a high-temperature airflow, which then enters the tobacco cup. The high-temperature airflow heats the tobacco in the tobacco cup to form smoke, which enters the water bottle (10) through the smoke channel and is filtered by the liquid before being discharged for smoking.

2. The heating structure for electric hot water fume according to claim 1, characterized in that: The insulating substrate (2) has several ribs (22) on its cavity that raise the heat-conducting cup, and the ribs abut against the outer wall of the heat-conducting cup to form a preheating channel.

3. The heating structure for electric hot water fume according to claim 1 or 2, characterized in that: The first heating element is fixedly wound around the inner wall of the heat-conducting cup or the outer wall of the receiving cup, and the preheating channel is set on the back of the heat-conducting cup corresponding to the position of the heating element.

4. The heating structure for electric hot water fume according to claim 1 or 2, characterized in that: The air inlet (51) is located on the rim of the container cup, so that the air inlet (51) is far away from the smoke inlet (61) at the highest position of the container cup body.

5. The heating structure for electric hot water fume according to claim 3, characterized in that: The air inlet (51) is located on the rim of the container cup, so that the air inlet (51) is far away from the smoke inlet (61) at the highest position of the container cup body.

6. The heating structure for electric hot water fume according to claim 1 or 2, characterized in that: The first air inlet (41) is located on the bottom of the heat-conducting cup, and the fresh air inlet (21) is located on the insulating substrate (2) corresponding to the position of the upper cavity wall of the receiving cavity.

7. The heating structure for electric hot water fume according to claim 3, characterized in that: The first air inlet (41) is located on the bottom of the heat-conducting cup, and the fresh air inlet (21) is located on the insulating substrate (2) corresponding to the position of the upper cavity wall of the receiving cavity.

8. The heating structure for electric hot water fume according to claim 4, characterized in that: The first air inlet (41) is located on the bottom of the heat-conducting cup, and the fresh air inlet (21) is located on the insulating substrate (2) corresponding to the position of the upper cavity wall of the receiving cavity.

9. The heating structure for electric hot water fume according to claim 5, characterized in that: The first air inlet (41) is located on the bottom of the heat-conducting cup, and the fresh air inlet (21) is located on the insulating substrate (2) corresponding to the position of the upper cavity wall of the receiving cavity.

10. The heating structure for electric hot water fume according to claim 1 or 2, characterized in that: The fresh air inlet (21) can be closed via a movable door on the housing.

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