WO2018115781A1

WO2018115781A1 - Improved shisha or hookah

Info

Publication number: WO2018115781A1
Application number: PCT/FR2017/053802
Authority: WO
Inventors: Thang Nguyen; Mohamed Belaïd Amine BENSALAH
Original assignee: Thang Nguyen; Bensalah Mohamed Belaid Amine
Priority date: 2016-12-21
Filing date: 2017-12-21
Publication date: 2018-06-28
Also published as: FR3060261B1; US20190364960A1; EP3558036B1; EP3558036A1; CN110087498A; FR3060261A1

Abstract

Device (1) for generating smoke for a hookah, comprising a tray (2) and a bowl (3), the tray (2) being shaped for placement at the top of a hookah stem and comprising a receptacle (20) suitable for receiving a smoking mixture, the bowl (3) being shaped for arrangement at the top of the tray (2) above the mixture, being suitable for receiving a heating element (H) and comprising a base (4) suitable for supporting the heating element (H) and for imparting its heat to the mixture, and a cover (5) closing up the bowl (3), the device (1) being shaped to allow circulation (C1) of fluid from the bowl (3) to the receptacle (20), the circulation (C1) comprising at least one baffle.

Description

Chicha or improved hookah

The present invention relates to a smoke generator for hookah. As illustrated in FIG. 1 and in a known manner, a hookah 10, also called shisha, shisha, nurgil, ghelyan, arguileh, houka, hookah, chilam, gelyoun, hubby-bubbly, qalyan or water pipe, is a pipe allowing smoke a mixture to smoke. The mixture, sometimes referred to as tabamel, may include tobacco, molasses, fruit essences, smoking gel, smoking stones or other components. The hookah 10 comprises, at its head 15, a smoke generator 1 capable of producing a smoke. This device 1 is disposed above a vertical chimney 11 transporting the smoke, to a vase 12 containing a liquid, typically water, which may include perfumes, dyes, fruit, ice cubes etc. By crossing the liquid, the smoke is advantageously refreshed and filtered. Then the smoke borrows at least one hose 13 to a tip 14 used by the smoker to inhale the smoke.

The hookah has been used since it was invented more than 450 years ago in India according to a first version and more than 700 years ago in Africa according to another version, traditionally in Africa, South Asia and the Middle East. Its use today extends to much wider horizons. The number of narghile smokers is estimated at more than 100 million worldwide.

As illustrated by the block diagram of FIG. 2, a smoke generator 1 produces smoke by combustion of the mixture M, previously arranged in a receptacle provided for this purpose in the smoke generator 1. The combustion is produced by a Heating element H received in the smoke generator 1 and disposed above the mixture M. The heating element H is traditionally a fuel element, such as coal. In order to avoid too rapid combustion, the contact between the heating element H and the mixture M is generally effected through a heat shield S. The heating element H communicates its heat to the mixture M, on the one hand by contact and secondly by means of a first flow of fluid Cl between the heating element H and the mixture M. The term fluid in the present, mainly air, can be charged with smoke from the combustion of the heating element H or smoke from the mixture M.

Traditionally, a sheet of aluminum foil is used as screen S. This sheet of aluminum foil is pierced with holes P to allow the first flow of fluid C1. According to WO 2013/184847, a rigid aluminum plate is used as a screen S and replaces the aluminum foil. This aluminum plate is pierced with holes P to allow the circulation of fluid C1.

In order to allow the circulation of fluid C1 between the heating element H and the mixture M, the smoke generators 1 of the prior art systematically have holes P through the screen S. These holes P, made at the shortest , are direct. However, they also allow coal ash and / or pieces of coal to pass through the screen S and pollute the mixture M. The arrangement of the heating element H, necessarily above the mixture M, causes the said P holes are vertical descending. Also migration of coal ash and / or pieces of coal is facilitated by gravity. The presence of ash or coal in the mixture M causes an unpleasant taste which degrades the smoker's experience.

There is therefore a need to provide a narghile smoke generator that prevents or at least limits the migration of ash or coal, to prevent pollution of the mixture. The present invention overcomes this disadvantage and provides many additional benefits to improve the smoker's experience.

For this purpose, according to a first aspect, the invention relates to a hookah smoke generating device, comprising a bowl and a hearth, the bowl being shaped to take place at the top of a narghile chimney and having a suitable receptacle. to accommodate a smoking mixture, the hearth being shaped to be disposed at the top of the bowl above the mixture, being adapted to receive a heating element and comprising a base, adapted to support the heating element and to communicate its heat to the mixture , and a cover closing the focus, the device being shaped to allow a first flow of fluid from the focus to the receptacle, the first circulation comprising at least one baffle.

This advantageously allows ashes or fuel debris do not leave the home to contaminate the smoking mixture.

According to other features of the invention, the smoke generator of the invention comprises one or more of the following optional characteristics considered alone or according to all the possible combinations:

the first circulation is shaped so as to comprise at least one ascending section,

the cover comprises at least a first channel arranged in its thickness, capable of allowing the first circulation, the cover is made of a good thermal conductive material, preferentially a light alloy, such as aluminum, and the first channel has a length of at least 1 cm, preferably at least 3 cm,

- The device is still shaped to allow a substantially central air intake into the home from the bottom,

- The bowl is substantially of revolution, and further comprises a central through chimney, a low part shaped to allow assembly at the top of the chimney hookah, a high part comprising the receptacle and shaped to accommodate the home, and at least a second a pipe connecting an inlet formed in the lower part, preferably radial and peripheral, to an outlet formed in the upper part, substantially axial and central, by means of a duct substantially parallel to the central chimney, and the base comprises at least one crossing , at the right of each exit,

the lid further comprises at least two walls,

the lid also comprises a handle made of thermal insulating material, preferably made of silicone, preferably in the form of a peripheral ring,

the cover and the base comprise complementary interlocking means,

the base and the bowl are shaped to assemble in a sealed manner,

the base and the bowl comprise complementary indexing means in rotation,

- The bowl further comprises a wall separating the receptacle from the chimney, comprising at least one opening for the passage of a fluid from the receptacle to the chimney,

- The bowl or the base further comprises at least a third pipe, substantially horizontal, adapted to connect the receptacle to the chimney, arranged where appropriate in said at least one opening and sealed relative to said at least one second pipe,

said at least one third pipe is angularly offset relative to said at least one second pipe,

said at least one first pipe is angularly offset relative to said at least one third pipe, in order to maximize the fluid path length in the receptacle,

the cover also comprises at least one lateral vent, preferably in the lower part, angularly offset relative to the said less a first pipe, and at least one upper vent, preferably at the top of the lid.

The invention will be more fully understood on reading the nonlimiting description which follows, with reference to the appended figures.

FIG. 1, already described, shows a narghile, in combination with which the invention can be implemented,

FIG. 2, already described, presents the principle of fluid circulations according to the prior art,

FIG. 3 presents the principle of the fluid circulations according to the invention,

FIG. 4 shows an embodiment of the device according to the invention in perspective view, from a first diving point of view,

FIG. 5 shows the device of FIG. 4 in cutaway view, from the first point of view,

FIG. 6 shows the same device, in a view cut in a first direction perpendicular to the axis of the chimney,

FIG. 7 shows the same device, seen cut along a second direction perpendicular to the axis of the chimney, turned 45 ° about the axis of the chimney relative to the first direction,

FIG. 8 shows a cover of the same device, in perspective view, from the first point of view,

FIG. 9 shows the lid of FIG. 8, in cutaway view, from the first point of view,

FIG. 10 shows a base of the same device, in perspective view, from the first point of view,

FIG. 11 shows a bowl of the same device, in a perspective view, from the first point of view,

FIG. 12 shows the base of FIG. 10, in cut perspective view, from the first point of view,

FIG. 13 shows the bowl of FIG. 11, in cut perspective view, from the first point of view,

FIG. 14 shows a focus of the same device, in a perspective view from a second point of view against plunging,

FIG. 15 shows the focus of FIG. 14, in perspective view cut along a first section plane, from the second point of view, FIG. 16 shows the focus of FIG. 14, in perspective view cut along a second 45 ° sectional plane with respect to the first section plane, from the second point of view. The principle of the invention is illustrated in FIG. 3. The heating element H is disposed above the mixture M from which it separates in a substantially watertight manner by a screen S comprising no drilling. The smoke generator 1 according to the invention allows the necessary first fluid flow Cl, but is shaped so as to cause said first fluid flow Cl between the heating element H and the mixture M to present a baffle, so that the path fluid is necessarily indirect, non-rectilinear and more preferably in a path having at least one ascending section A.

The device 1 hookah smoke generator 10 according to the invention, as illustrated in FIGS. 4-7, comprises a bowl 2 and a hearth 3. The bowl 2 is shaped to take place at the top of a hookah chimney 11. and comprises a receptacle 20 adapted to accommodate the mixture M. The hearth 3 is shaped to be disposed at the top of the bowl 2 above the mixture M. The hearth 3 is able to accommodate a heating element H.

The hearth 3 comprises a base 4 and a cover 5. The base 4 is able to support the heating element H. The base 4 forms a screen S avoiding too rapid combustion of the mixture M in direct contact with the heating element H. The base 4 is a good thermal conductor to communicate its heat to the mixture M. The lid 5 assembles with the base 4 to close the hearth 3, around the heating element H.

According to an important characteristic, the device 1 is shaped to prevent a direct circulation between the hearth 3 which contains the heating element H and the receptacle 20 of the bowl 2 which contains the mixture M. On the contrary the device 1 is shaped to allow a first flow of fluid C1 from the hearth 3 to the receptacle 20 forcing said first circulation C1 to comprise at least one baffle. Thus, there is no straight forward direct path between the hearth 3 and the receptacle 20. The first fluid circulation C1 between the hearth 3 and the receptacle 20 is indirect, non-rectilinear.

Advantageously, the first circulation Cl is shaped so as to impose the fluid at least one ascending section A. This advantageous characteristic makes it possible, using gravity, to prevent ashes or scrap of coal, naturally heavier than air, to follow the first circulation Cl and to reach the mixture M. According to one embodiment, the fluid enters the first circulation Cl from the top of the hearth 3, forcing the fluid to rise according to the ascending section A.

In order to conform the first circulation Cl, the cover 5 comprises at least a first channel 51 formed in the thickness of the cover 5 adapted to allow the first circulation C1.

According to a possible embodiment, the first pipe 51 begins at a hole 55. Here the lid 5 has an outer wall 52 and an inner wall 53 spaced to provide at least one passage between the two in the thickness of the lid 5. The hole 55 is practiced, advantageously in the ceiling of the cover 5, in the only inner wall 52. The first pipe 51 continues between the two walls 52, 53 down to the base 4. At least one passage 45 passing through the base 4 opposite allows the pipe 51 to open into the receptacle 20, containing the mixture M. The junction between the cover 5 and the base 4 is substantially sealed, at least at the level of said at least one passage 45. The volume inside the hearth 3 is not in communication with said at least one passage 45, so as not to reproduce the disadvantage of the prior art.

According to an alternative embodiment, without passage 45 passing through the base 4, the pipe 51 comprises a circumferential, sealed, base 4 from the outside, beyond its periphery.

It can be seen, by comparing the prior art diagrams of FIG. 2, and of the invention, FIG. 3, that the length of the first circulation C1, or what is equivalent, the length of the first channel 51 is greatly extended by the invention, relative to a substantially zero length according to the prior art. Thus, by its positioning in the cover 5 the pipe 51 may advantageously be shaped to have a length of at least 1 cm, preferably at least 3 cm, see more.

The cover 5 may be made of any material, provided that it supports the thermal stresses caused by heat, such as a plastic material, a glass, a ceramic or a metallic material. However, according to another advantageous characteristic, the cover 5 is made of a good thermal conductor material. This material may be a light alloy, for example aluminum. Thus the large length of pipe 51 forms a heat exchanger, which in relation to the ambient air present around the outer wall 52 of the cover 5, provides a dissipator suitable for cooling the fluid circulating therein. The length of the route is here an advantage in that on the one hand it reinforces the cooling effect and on the other hand it provides a regulating effect. It follows that the fluid passing through the first circulation Cl, by passing through said at least one pipe 51, comes out with a temperature regulated, substantially constant in time, despite the possible variations in the temperature of the heating element H. is particularly advantageous for good controlled combustion of the mixture M and contributes to improving the smoking experience. In addition, this thermal regulation effect advantageously makes it unnecessary any means for adjusting the intensity of the heating element H, for example a means of adjusting the combustion by means of an adjustable air inlet.

According to another important characteristic, the device 1 is still shaped to allow a second circulation C2 allowing an air inlet in the hearth 3, substantially central from the bottom. It is here question of the combustion air that joins the heating element H in the hearth 3 to allow combustion.

According to the prior art, the combustion air was directly introduced into the hearth due to the absence of a cover or via at least one vent made in the cover, in the ceiling and / or in the side walls of the cover. This can lead to difficulties in producing the combustion of the heating element. A response proposed by some devices of the prior art is a device for adjusting the flow of incoming air, to increase it at the beginning of combustion, and then reduce after combustion is well established. This degrades the smoker's experience in that he must, several times during a session, modify said setting.

According to the invention, the possibility of a low air intake advantageously makes it possible to make a second circulation C2 producing a natural print, which maintains itself and which also self-regulates according to demand: start, when the device 1 is cold, and then decreasing as the device 1 heats.

This is made possible by a suitable conformation of the device 1. The bowl 2 is arranged around and comprises a central chimney 21 through axially able to allow the smoke produced to reach the chimney 11 of the narghile 10. Also the bowl 2 comprises a lower part 22 adapted to allow an assembly of the bowl 2 and the device 1 at the top of the chimney 11 of the narghile 10. This assembly can be achieved by any means, for example by a nesting. This assembly is advantageously smoke-tight. The bowl 2 further comprises an upper part 23 comprising the receptacle 20. The upper part 23 is shaped to support the hearth 3. The assembly between the bowl 2 and the hearth 3 can be achieved by any means, for example by interlocking. This assembly is advantageously smoke-tight. The bowl 2 also comprises at least one second pipe 24. Such a second pipe 24 passes substantially through the entire bowl 2 axially and connects an inlet 241 to an outlet 242 by means of a pipe 243 substantially parallel to the central chimney 21. 241 is formed in the lower part 22, preferably radially and peripherally, so as to disturb neither the path of the smoke in the chimney 21,11, nor the assembly of the bowl 2 on the chimney 11. The shape and positioning radial input 241 ensures that this inlet 241 is not clogged, including a wider narghile at the interface of the chimney 11 with the bowl 2. An outlet 242 is formed in the upper part 23, preferably substantially axially and centrally, to the extent that the chimney 21 allows it, so as to bring air into the hearth 3, directly under the heating element H. An outlet 242 is disposed e directly below the base 4. In order to allow the passage of air, the base 4 comprises at least one traversing 41 substantially vertical. A bushing 41 passes through the base 4 opposite an outlet 242 and vertically connects, in a substantially leaktight manner, an outlet 242 with the interior of the hearth 3, thus extending a second duct 24. The base 4 advantageously comprises as many bushings 41 that the bowl 2 comprises second pipes 24, four in the illustrated embodiment. These ducts 24 and bushings 41 are able to be disposed facing so as to form a second extended pipe 24,41. This advantageously allows by natural draft, to supply air combustion of the heating element H in the fireplace 3.

According to an advantageous embodiment, the base 4 comprises, on the hearth side, around the outlets of the bushings 41, a groove 46, facilitating the exit of the air, even when a piece of coal is disposed at the right of a crossing. .

It should be noted that such a second circulation C2, ensuring a draw by an air inlet from the bottom, is advantageously made possible by the fact that the first circulation Cl no longer passes through the base 4. Otherwise, there would be a risk of short circuit, the air draft directly joining the chimney 21.

According to an advantageous embodiment, more particularly visible in FIGS. 5,7,9,15,16, the cover 5 further comprises at least two walls 52,53. As previously described these two walls 52,53 in that they form a space in the thickness of the cover 5 allow the passage of at least a first pipe 51. They form, as previously described, a heat exchanger for regulating the temperature of the air circulating there. Extending the presence a vacuum between the two walls 52,53, beyond the only need for passage of at least one pipe 51, to the entire surface of the lid 5, has another advantage: the outer wall 52 is significantly less It is hot, thus being separated by a space of the wall 53, very hot because of its proximity to the heating element H. This ensures that the outer wall 52 remains much cooler and limits the risk of burns for a user.

The addition of a third or even a fourth wall, on the one hand to increase the length of the baffle and the first pipe 51 and on the other hand to further cool the outermost wall.

In order to further reinforce the anti-scalding effect, and advantageously to allow a manipulation of the hearth 3, even when it is hot, the lid 5 also comprises a handle 54 made of thermal insulating material. This thermal insulating material can be any material, such as a plastic material, a leather or a wood, and can be for example silicone. The handle 54 is preferably annularly shaped in a ring peripherally surrounding the lid 5. While the prior art provided a removable handle, such as a re-use of a coal tong, the invention incorporates a permanent handle 54, which more reduces the risk of burns.

According to another characteristic, more particularly illustrated in FIGS. 8, 9, 10, 12, 14, the lid 5 and the base 4 advantageously comprise complementary locking means 44, 56. Thus according to the illustrated embodiment, at least one hook 56, disposed at the bottom of the cover 5, is adapted to be engaged vertically in at least one slot 44 formed in the base 4. A rotation simply allows said at least one hook 56 of to lock in said at least one slot 44. This closes the focus 3 by securing the cover 5 on the base 4. A rotation in the opposite direction still allows them to separate. Advantageously, the same number of slot 44 and hook 56 are present and opposite. The complete hearth 3, comprising the lid 5 and the base 4 secured, can thus be manipulated by grasping the lid 5, preferably by its handle 54. These features greatly simplify the handling and cleaning operations of the device 1, including when it is still hot.

The locking means 44, 56 have a degree of angular symmetry that is less than or equal to that of the circulations C1-C3. Thus, in the preferred embodiment illustrated, all the C1-C3 circulation have a degree of symmetry of 4, ie four elements angularly equilute at 90 °. It is the same for 44,56 locking means which have a degree of symmetry equal to 4, but which could also be in multiple, or 2 or 1

Another degree of symmetry, even or odd: 2, 3, 5, ..., is possible and equivalent, as long as it remains identical or sub-multiple between the locking means on the one hand and the circulations on the other on the other hand, to allow them to be inserted. Thus, for example with a degree of symmetry of 3, there would be 3 pairs of locking means, preferably equidistantly angularly, or all 120 °, inte rcallés with circulations C1-C3, also 3 in number, preferably equireparteis angularly , ie every 120 °.

According to the illustrated embodiment, a slot 44 is adjacent to a passage 45, so as to limit the number of machining by allowing a common embodiment. The slot 44 is the small cutout closer to the center, while the passage 45 is the larger cutout to the outside.

According to another characteristic, the underside of the base 4 and the upper part 23 of the bowl 2 are shaped to assemble substantially sealingly. If as shown, the two parts are circular, the upper part 23 of the bowl 2 may for example have a bore in which is housed the cylindrical base 4. The assembly must advantageously be able to be made or disassembled by hand. A slightly tight fit ensures a tightness to the smoke. It has been seen that the base 4 is advantageously metallic material. The bowl 2 may be of any material, for example glass, metal, ceramic or plastic. According to a preferred embodiment, the bowl 2 is made of food grade silicone. If the bowl 2 is made of an elastic material, such as an elastomer, its elasticity is advantageously used to ensure sealing.

The bowl 2 and the base 4 cooperate for different functions, such as the second circulation C2 ensuring the draw, already described, and others described above, which advantageously benefit from alignment. Thus, for the second circulation C2, a second pipe 24 disposed in the bowl 2 is advantageously aligned with a penetration 41 disposed in the base 4. To ensure this alignment, the base 4 and the bowl 2 respectively comprise complementary indexing means 42.27. These indexing means 42, 27 provide a rotational indexed position and an anti-rotation function. This is more particularly visible in Figures 10-13. The base 4 comprises at least one indexing means 42, here a pin 42, able to engage a complementary indexing means 27, here a slot 27, disposed opposite in the bowl 2. Like the locking means 44, 56, the indexing means 27, 42 have a degree of symmetry below or equal to that of the circulations C1-C3.

According to another characteristic, more particularly visible in FIGS. 11, 13, the bowl 2 further comprises a wall 28 separating the receptacle 20 from the chimney 21. This wall 28 of substantially annular shape, thus delimits a receptacle 20 in substantially toroidal shape. This wall 28 advantageously allows the mixture M to be contained in the peripheral receptacle 20.

In order to allow the smoke, produced from the mixture M in the receptacle 20, to join the chimney 21 in a substantially horizontal path, the wall 28 is advantageously cut from at least one opening 29.

In the smoke generator 1 according to the invention, at least three fluid circulations C1-C3 coexist. The first fluid flow C1 between the hearth 3 and the receptacle 20 via said at least one first pipe 51 and the second low air inlet circulation C2 for drawing via said at least one second pipe 24, 41 have already been described. These circulations intersect tightly, without mixing the fluids they carry.

It is necessary to add a third circulation C3 smoke, substantially horizontal, between the receptacle 20 and the chimney 21. This is more particularly visible in Figures 14-16. To this end, the device 1 comprises at least one third pipe 43. Said third pipe 43, substantially horizontal, to pass through the wall 28, is disposed in said at least one opening 29, if present. Such a third pipe 43, must be disposed at the interface between the base 4 and the bowl 2, for example within a heat exchanger part, further comprising said at least one substantially vertical penetration 41.

As illustrated more particularly in FIGS. 14-16, in the illustrated embodiment, this exchanger is made in the base 4. Alternatively, it could be made in an independent part or alternatively in the bowl 2.

Said at least one third pipe 43, substantially horizontal, cross tightly, said at least one second pipe 24,41, substantially vertical. For this, said at least one third pipe 43 is angularly offset relative to said at least one second pipe 24,41. This is more particularly visible in FIGS. 12, 13, 7, 14-16. According to the illustrated embodiment, a first number of bushings 41 is produced, allowing the second channel C2, here equal to 4. Advantageously, these bushings 41 are angularly evenly distributed, ie here every 90 °. It is realized the same number of third pipes 43. Advantageously these channels 43 are also angularly equal parts, or here every 90 °, by shifting, to interpose with the bushings 41, substantially at an angle of 45 °.

In one embodiment comprising three bushings 41, advantageously equiparted every 120 °, it is necessary to have three third pipes 43, advantageously angularly evenly distributed every 120 °, by shifting them, in order to intercalate them with the bushings 41, substantially an angle of 60 °.

It has been seen that the fluid from the hearth 3, via the first circulation C1 borrowing at least a first pipe 51, arrives in the receptacle 20 via at least one passage 45 formed in the base 4. This fluid, comprising mainly of the hot air, allows the combustion of the mixture M and the smoke thus produced borrows the third circulation C3 to join the chimney 21. Advantageously, and as more particularly visible in Figures 14-16, to increase the length 47 of the fluid path with the mixture M, the distance 47 between the first circulation C1 and the third circulation C3 is maximized. For this purpose the distance 47 between the exit of the first circulation C1, the exit of a first duct 51 at a passage 45, and the entrance of the third circulation C3, the entrance of a third duct 43, is maximized. In the preferred embodiment illustrated, 4 passages 45 are present, equidistributed angularly, ie every 90 °. Similarly, 4 third pipes 43 are present, equidistributed angularly, ie every 90 °. Also the maximization is carried out by angularly shifting, here of 45 °, the 4 passages 45 and the 4 third pipelines 43.

According to another feature, the cover 5 further comprises at least one lateral vent 57, preferably in the lower part. Such a lateral vent 57 constitutes an additional air inlet. It is important to note that such a lateral vent 57 completely crosses the lid 5 in a sealed manner with respect to the space between the two walls 52, 53 and vis-à-vis said at least one first pipe 51 This can be seen more particularly by comparing FIGS. 6 and 7 between which the device 1 has been rotated by 45 ° around the axis of the chimney 21 or again in FIG. 9. At the level of a lateral vent 57 a continuous canvas joined the two walls 52,53 tightly. This is more particularly visible in the lateral vent 57 of FIG. 9 or in that of FIG. 16.

In the illustrated embodiment, the lateral vents 57, 4 in number, are advantageously angularly equilateral, ie every 90 °. Similarly, the first ducts 51, and the passages 45 opposite which extend in the base 4, are 4 in number and are advantageously angularly equilateral, or all the 90 °, advantageously shifted substantially by an angle of 45 °, in order to be inserted between the lateral vents 57.

According to another characteristic, the lid 5 also comprises at least one upper vent 58, preferably at the top of the lid 5.

Claims

Hookah smoke generating device (1), comprising a bowl (2) and a hearth (3), the bowl (2) being shaped to sit at the top of a narghile chimney (11) ( 10) and having a receptacle (20) for receiving a mixture (M) for smoking, the hearth (3) being shaped to be disposed at the top of the bowl (2) above the mixture (M), being adapted to accommodating a heating element (H) and comprising a base (4), able to support the heating element (H) and to communicate its heat to the mixture (M), and a lid (5) closing the fireplace (3) , the device (1) being shaped to allow a first flow (Cl) of the furnace fluid (3) to the receptacle (20), characterized in that the first circulation (Cl) comprises at least one baffle.

2. Device (1) according to the preceding claim, wherein the first flow (Cl) is shaped to include at least one ascending section (A).

3. Device (1) according to any one of the preceding claims, wherein the cover (5) comprises at least a first pipe (51) formed in its thickness adapted to allow the first flow (Cl).

4. Device (1) according to the preceding claim, wherein the cover (5) is made of a good thermal conductive material, preferably a light alloy, such as aluminum, and wherein the first pipe (51) has a length of at least 1 cm, preferably at least 3 cm.

5. Device (1) according to any one of the preceding claims, further shaped to allow a second circulation (C2) ensuring an air inlet into the hearth (3) substantially central from the bottom.

6. Device (1) according to the preceding claim, wherein the bowl (2) is substantially of revolution, and further comprises a central duct (21) through, a lower portion (22) shaped to allow assembly at the top of the chimney ( 11) hookah (10), an upper portion (23) comprising the receptacle (20) and shaped to accommodate the focus (3), and at least a second pipe (24) connecting an inlet (241) formed in the lower part (22), preferably radial and peripheral, at an outlet (242) formed in the upper part (23), substantially axial and central, by means of a duct (243) substantially parallel to the central chimney (21), and the base (4) comprises at least one crossing (41), at the right of each outlet (242).

7. Device (1) according to any one of the preceding claims, wherein the cover (5) comprises at least two walls (52,53).

8. Device (1) according to any one of the preceding claims, wherein the cover (5) further comprises a handle (54) of thermal insulating material, preferably silicone, preferably in the form of a peripheral ring.

9. Device (1) according to any one of the preceding claims, wherein the cover (5) and the base (4) comprise means (44,56) complementary interlocking.

10. Device (1) according to any one of the preceding claims, wherein the base (4) and the bowl (2) are shaped to assemble sealingly.

11. Device (1) according to any one of the preceding claims, wherein the base (4) and the bowl (2) comprise indexing means (42,27) in complementary rotation.

12. Device (1) according to any one of the preceding claims, wherein the bowl (2) further comprises a wall (28) separating the receptacle (20) of the chimney (21), comprising at least one opening (29) allowing passing smoke from the receptacle (20) to the chimney (21).

13. Device (1) according to claim 6, wherein the bowl (2) or the base (4) further comprises at least a third pipe (43), substantially horizontal, adapted to connect the receptacle (20) to the chimney (21). ), optionally disposed in said at least one opening (29) and sealed relative to said at least one second pipe (24,41).

14. Device (1) according to the preceding claim, wherein said at least one third pipe (43) is angularly offset relative to said at least one second pipe (24,41).

15. Device (1) according to one of claims 13 or 14, wherein said at least one first pipe (51) is angularly offset relative to said at least a third pipe (43), to maximize the length (47) of fluid path in the receptacle (20).

16. Device (1) according to any one of the preceding claims, wherein the cover (5) further comprises at least one lateral vent (57), preferably in the lower part, angularly offset relative to said at least one first pipe (51). and at least one upper vent (58), preferably at the top of the cover (5).