RU2798315C2 - Device for heating the smoking mixture in the hookah bowl - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: invention relates to the designs of electric heating devices for smoking mixtures, in particular those containing tobacco, used in traditional hookahs. 1. The device for heating the smoking mixture in the bowl of the hookah contains a housing made of the upper and lower parts containing the inlet and outlet purge holes. The outlet holes of the upper part of the housing are connected by tubes to the inlet holes of the lower part. Electric heaters are installed in the upper and lower parts of the housing and contain at least one air channel. The heating temperature of the upper heater is higher than the heating temperature of the lower heater, protected by a screen from the air flow heated by the upper heater.

EFFECT: increasing the efficiency of heating the smoking mixture in the hookah bowl by eliminating overheating and burning the smoking mixture.

3 cl, 1 dwg

Description

Technical field

The invention relates to hookahs, and in particular to designs of electric heating devices for smoking mixtures, in particular those containing tobacco, used in traditional hookahs.

State of the art

In traditional hookahs, when smoking, embers are usually used, located on the bowl to transfer heat to the smoking mixture, in particular, containing tobacco. However, the use of embers as a heat source in hookahs has a number of disadvantages. When coal is burned, high levels of carbon monoxide CO, metals and various carcinogens are released. When smoking hookah, the water does not filter many of the toxic chemicals that are released when the charcoal burns, exposing smokers to their effects. These substances increase the risk of various diseases. In addition, smoldering coal increases the amount of CO and carbon dioxide CO ₂ in the environment. Smoldering coal is accompanied by an unpleasant odor and is a fire hazard.

To eliminate the noted shortcomings, it is known from the prior art to use electric heaters of the smoking mixture in the hookah bowl instead of traditional coals.

A device for induction heating of a smoking mixture is known (US10561172 B2, IPC A24F 1/30, publ. 02/18/2020), containing a chamber for a smoking mixture, a first heater in the lower part of the chamber, a second heater in the upper part of the chamber, an air inlet connected to chamber and an air outlet connected to the chamber.

A heating device for heating tobacco products is known (RU 2676159 C1, IPC A24F 1/30, publ. 12/26/2018) including a heating element, a housing containing said heating element, as well as a control device, an autonomous power source associated with it, moreover, the control device configured to maintain a constant temperature range of the heating element.

A heating device is known (WO 2021054910 A1, IPC A24F 1/30, publ. 03/25/2021), having a heat transfer base into the hookah bowl for placing tobacco, and side walls that extend from said heat transfer base that surround the heating volume; also contains a front opening provided on one of said side walls, and an electric heater having a resistive heater body that is inserted into the heating volume through said front opening and a power transmission cable that is electrically connected to said heater body.

A known air flow heating system for tobacco evaporation (US 20210251283 A1, IPC A24F 1/30, publ. 08/19/2021) in which the heater uses one or more coils of wire with resistance to generate heat to heat tobacco in a hookah bowl. The heater includes an external chimney that surrounds the resistance band and allows air to flow past the heating elements, and an internal chimney that allows cold air to mix with heated air.

A device is known for heating a tobacco-containing smoking mixture in a hookah bowl (RU 198662 U1, IPC A24F 1/30, publ. , power supply and control unit. At the same time, in the internal cavity of the body in the form of a glass, by means of an axial screw and a corresponding holding element, the following are fixed in series installed on its bottom: the first coupling, a flat air divider, the second coupling, a heater, a fixing nut and a cover.

A device for heating a tobacco-containing smoking mixture in a hookah bowl is known (RU 2755459 C1, IPC A24F 1/30, publ. 09/16/2021), including a housing, a power supply and a control unit. The body is made in the form of a hollow cylindrical or prismatic body in the form of a glass with a perforated bottom. The heating element is located in the housing. The body also has a lid. In the inner cavity of the body having the shape of a cup, by means of a retaining element, an air divider is fixed, which is a round horizontal plate perforated in the center with the possibility of mixing air flows and located between the heater with a thermally insulating gasket and the bottom of the glass, and a heater with a thermally insulating gasket between them.

The disadvantage of the known designs of heaters is overheating and combustion of smoking mixtures and large temperature fluctuations in the heating element during its regulation, which worsens the evaporation of the smoking mixture and adversely affects the formation of the gas mixture in the hookah when smoking.

The closest in technical essence to the claimed technical solution is, chosen as a prototype, a smoking mixture heating device (US 10206424 B1, IPC A24F1 / 30, publ. 02/19/2019), containing two electric heaters installed in the housing one above the other and connected to the source of electricity. The heater is made in the form of a resistance band and includes a chimney that surrounds the resistance band, providing heat removal, and a heat transfer plate, which includes one or more protrusions to remove excess heat. The air passes through the top of the chimney and is heated by the resistance band. The heat transfer plate and hot air heat the smoking mixture in the hookah bowl.

A disadvantage of the known heater is the insufficiently efficient heating of the smoking mixture. The known construction does not allow to ensure that the heating temperature of the lower heater is less than the temperature of the upper heater, since the warmer air flow from the upper heater heats the less heated lower heater. The noted design flaw leads to overheating and burning of smoking mixtures, as well as to temperature fluctuations in the heating elements during its regulation.

Disclosure of the essence of the invention

The technical problem to be solved by the device is to eliminate the listed disadvantages of the prototype.

The technical result is to increase the efficiency of heating the smoking mixture in the bowl of the hookah, by eliminating overheating and burning the smoking mixture.

The technical result is achieved by the fact that the device for heating the smoking mixture in the hookah bowl contains two electric heaters installed in the housing one above the other, according to the invention , each heater has at least one air channel, the heating temperature of the upper heater is higher than the heating temperature of the lower heater , protected by a screen from the air flow heated by the upper heater.

In particular cases of implementation of the invention, the screen is made in the form of a metal sheet, the area of which is greater than or equal to the area of the upper surface of the lower heater. The housing consists of upper and lower parts connected by at least one tube.

Brief description of the drawings

The invention is illustrated by a drawing, which shows a section of the smoking mixture heater in the bowl of the hookah.

Implementation of the invention

The device for heating the smoking mixture in the hookah bowl contains a housing consisting of the upper 1 and lower 2 parts. Each of which has inlet 3, 4 and outlet 5, 6 purge holes. The outlet 5 purge holes of the upper part 1 of the housing are connected by tubes 7 with the inlet 4 purge holes of the lower part 2 of the housing. Tubes 7 can be made of ceramics. The upper part 1 of the housing contains an electric heater 8 with air channels 9. The lower part 2 of the housing contains an electric heater 10 with air channels 11. The lower heater 10 is protected by a screen 12 made in the form of a thin metal sheet, the area of which is greater than or equal to the area of the upper surface of the lower heater 10.

Upper 8 and lower 10 heaters are equipped with a control unit. The body and heaters 8, 10 are made of a cylindrical shape, since the upper part of the hookah bowl usually has a cylindrical shape.

The protective screen 12 is made by stamping thin iron using a punch.

The device works as follows.

Before smoking a hookah, a device for heating the smoking mixture is installed on a bowl filled with a smoking mixture. The device is connected to a power source, for example, batteries or a 220V electrical outlet can be a power source. Using the control unit, the device is turned on by pressing the corresponding on / off button of the heating device. The range of values of the required temperature of the heating device is maintained by a control device that implements a given temperature control algorithm. The indication of the temperature value of the heaters is carried out, for example, by means of a diode illumination on the control unit, which also makes it possible to regulate the temperature of their heating.

After heating the upper heater to a temperature of 600-700°C, and the lower heater to 200-240°C, they begin to smoke and smoke a hookah.

When air is drawn in through the mouthpiece of the hookah, air at atmospheric temperature through the purge holes 3 enters the air channels 11 of the heater 8. After passing through the air channels 11, the air is heated to a temperature of 600-700°C. Through openings 4, 5 and tubes 7, heated air enters the lower part 2 of the heating device body. Upon entering the lower part 2 of the housing, the heated air rests against the screen 12 of the lower heater 9. After interacting with the screen 12, the heated flow changes its direction of movement. The heated air flow from the heater 8, bypassing the heater 9 with a lower heating temperature, enters the outlet purge holes 6 of the housing. From the vent holes 6, the heated air flow enters the bowl with the smoking mixture, evaporating it.

The lower heater 9, heated to a temperature of 200-240°C, provides heating and maintaining this temperature of the smoking mixture without burning or overheating it.

When air is drawn through the mouthpiece, heated by the upper heater 8 to a temperature of 600-700 ° C, the air flow bypassing the heater 9 with a lower temperature due to the screen 12 enters the smoking mixture, thereby the temperature of the lower heater 9 does not increase. Since the heating temperature of the lower heater is less heating temperature of the upper heater, and the heated air flow from the upper heater enters directly into the bowl, bypassing the less heated lower heater, it is possible not to overheat and not burn the smoking mixture, at the same time, providing an overheated air flow for efficient evaporation of the smoking mixture.

Smoking hookah is carried out as follows. Air is drawn in through the mouthpiece of the hose and a vacuum is created in the upper part of the hookah bulb. Due to the appearance of vacuum, air is sucked in through the device for heating the smoking mixture. From the heaters 8, 9 heated air enters the bowl and evaporates the smoking mixture in it. Then a gas mixture-smoke is formed in the hookah shaft, which is filtered by water or other liquid in the hookah bulb and enters its upper part, and from there into the mouthpiece.

The proposed device for heating the smoking mixture in the hookah bowl has a simple design and is easy to manufacture. The proposed design of the heater makes it possible to exclude burning and overheating of the smoking mixture, as a result of which the efficiency of heating the smoking mixture in the hookah bowl increases.

Claims (3)

1. A device for heating a smoking mixture in a bowl of a hookah, containing a body made of upper and lower parts containing inlet and outlet purge holes, while the outlet holes of the upper part of the body are connected by tubes to the inlet holes of the lower part, and electric heaters installed in the upper and lower parts of the body and containing at least one air channel, wherein the heating temperature of the upper heater is higher than the heating temperature of the lower heater, protected by a screen from the air flow heated by the upper heater. 2. A device for heating a smoking mixture in a hookah bowl according to claim 1, characterized in that the screen is made in the form of a metal sheet. 3. A device for heating the smoking mixture in the hookah bowl according to claim 1, characterized in that the screen area is larger than the area of the upper surface of the lower heater.

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