CN106418719B - Atomizer of photon cigarette - Google Patents

Abstract

The invention discloses a photon cigarette atomizer, and aims to provide a simple and reliable photon cigarette atomizer. The device comprises an oil storage cylinder with an oil storage cavity, a light hood, an oil guide rope, an isolating cover and an air duct, wherein the front end of the oil storage cylinder is provided with a connecting part, the light hood is arranged on the end face of the front end of the oil storage cylinder and used for receiving a high-energy light source and realizing photo-thermal conversion, the oil guide rope is wound on the outer wall of the light hood, the isolating cover is positioned in the oil storage cylinder and covers and seals the light hood, and the air duct is communicated with the isolating cover and extends to the end face of the rear end of the oil storage cylinder; the opening end of the isolation cover faces the front end of the oil storage cylinder; the isolating cover is provided with an oil guide hole for the oil guide rope to pass through, and the oil guide rope passes through the oil guide hole of the isolating cover and enters the oil storage cavity of the oil storage cylinder; the condensing cover is provided with a ventilation structure for conducting the shielding cover and the front end of the oil storage cylinder, and the wall surface of the light-heat conversion cavity is coated with a black coating. The invention can effectively improve the service life and reliability of the atomizer.

Description

A atomizer for photon smoke

technical field

The invention relates to the technical field of electronic cigarettes, in particular to an atomizer for photonic cigarettes.

Background technique

Existing atomizers are all devices that heat liquid e-liquid and then atomize it to generate gaseous smoke when the resistance wire is heated by electricity. Because the resistance wire built into the atomizer needs to be heated, the contact between the atomizer and the battery rod There are high requirements for connection reliability. At the same time, high requirements are put forward for the connection, arrangement and installation process of the resistance wires that require heating inside the atomizer. There are also phenomena such as carbonization and dry burning, which also affect the service life of the resistance wire heating atomizer.

Contents of the invention

The invention overcomes the disadvantages in the prior art and provides a photon smoke atomizer with simple structure, more stable operation and simple reliability.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

An atomizer for photonic smoke, which is connected to a high-energy light source when in use, absorbs the high-energy light source and converts it into a heat source; includes an oil storage cylinder with an oil storage cavity and a connecting portion at the front end, installed on the front end surface of the oil storage cylinder, Condenser cover for receiving high-energy light source and realizing light-to-heat conversion, oil guide rope wound on the outer wall of the focus cover, isolation cover located in the oil storage cylinder to cover and seal the focus cover, and the isolation cover communicated and extended The air guide pipe to the rear end face of the oil storage tank;

The opening end of the isolation cover faces the front end of the oil storage cylinder; the isolation cover is provided with an oil guide hole for the oil guide rope to pass through, and the oil guide rope passes through the oil guide hole of the isolation cover and enters the oil storage tank. In the oil storage chamber;

A ventilation structure at the front end of the conduction isolation cover and the oil storage cylinder is provided on the condensing cover, and the wall surface of the light-to-heat conversion cavity is coated with a black coating.

The front end surface of the oil storage cylinder is provided with a mounting hole for the condenser cover set, and the rear end of the condenser cover has a plug for limiting the oil guide rope, and the plug is provided with a conduction isolation cover and an oil storage tube. The through hole at the front end of the barrel.

The plug is a pipe body whose axis is perpendicular to the axis of the condenser, and whose pipe hole constitutes a conduction hole and communicates with the cavity of the condenser.

The plug is a cylinder, which is detachably connected to the condenser cover, and the axis of the through hole on it is perpendicular to the axis of the condenser cover.

The condensing cover is funnel-shaped; the front end of the oil storage tube is provided with a through hole with a diameter smaller than the diameter of the opening end of the condensing cover for the passage of the high-energy light source; the opening end of the condensing cover is lapped on the front end of the oil storage tube on the inner wall of the cover and cover the through hole; the rear end of the condenser cover is closed and the end is provided with a return spring, and the other end of the return spring overlaps the inner wall of the isolation cover.

The rear end of the condensing cover is provided with a cylindrical part which is sleeved with the return spring.

An outwardly extending annular portion is provided on the outer wall of the front end of the light collecting cover; a snap ring is provided on the inner wall of the front end of the oil storage tube to snap to the end of the isolation cover.

The end surface of the oil storage cylinder in contact with the isolation cover is provided with a sealing ring for sealing the end of the isolation cover.

A detachable cover is provided at the rear end of the oil storage cylinder.

An oil filling hole with a hole plug is arranged on the rear end surface of the oil storage cylinder.

Compared with prior art, the present invention has following advantage:

The atomizer of the present invention can generate high temperature in a small local area by setting a concentrating cover that can collect incident high-energy light sources and realize light-to-heat conversion, and provide the energy required for liquid e-liquid atomization, which simplifies the entire atomization The installation of the atomizer can effectively improve the service life and reliability of the atomizer.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a structural schematic diagram of the first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the condenser in FIG. 1 .

Fig. 3 is an exploded view of various components in the oil storage cylinder in Fig. 1 .

Fig. 4 is a schematic structural diagram of the first embodiment of the present invention.

FIG. 5 is a schematic structural view of the condenser cover in FIG. 4 after being connected to the plug.

Fig. 6 is an exploded view of the condenser and the plug in Fig. 5 .

Fig. 7 is a schematic structural diagram of the first embodiment of the present invention.

FIG. 8 is a schematic structural diagram of the condenser in FIG. 7 .

Fig. 9 is an exploded view of various components in the oil storage cylinder in Fig. 7 .

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the following description, one end of the oil storage cylinder for users to suck is called the rear end, and the other end is called the front end.

Embodiment one

The atomizer of the photon smoke shown in Figure 1-3 is connected with a high-energy light source when in use, absorbs the high-energy light source and converts it into a heat source; it includes an oil storage cylinder 7 with an oil storage cavity and a connecting part 1 at the front end, installed in the storage tank The condenser cover 2 on the front end surface of the oil cylinder 7 is used to receive the high-energy light source and realize light-to-heat conversion, and the oil guide rope 4 wound on the outer wall of the condenser cover 2 is located in the oil storage cylinder 7 to cover and close the condenser cover 2, and the air duct 8 communicating with the isolation cover 5 and extending to the rear end face of the oil storage cylinder 7;

The opening end of the isolation cover 5 faces the front end of the oil storage cylinder 7; the isolation cover 5 is provided with oil guide holes 51 and 52 for the oil guide rope 4 to pass through, and the oil guide rope 4 passes through the isolation cover 5 The oil guide holes 51, 52 enter into the oil storage cavity of the oil storage tube 7; the size of the oil guide rope 4 matches the size of the oil guide holes 51, 52, so as to ensure that the e-liquid with a certain viscosity in the oil storage tube 7 can pass through the oil guide The rope 4 slowly reaches the part wound on the outer wall of the condenser cover 2, and does not pass through the oil guide holes 51, 52 directly into the isolation cover 5 in large quantities, so as not to cause the smoke oil to flow out from the air guide tube 8 and cause the cigarette to seep. leak.

The concentrating cover 2 is provided with a ventilation structure that conducts the isolation cover 5 and the front end of the oil storage tube 7 , and the wall surface of the light-to-heat conversion chamber is coated with a black coating 21 . The black coating 21 is a black coating 21 with a light absorption rate of 85-100% such as a carburized layer with high thermal conductivity and heat resistance ≥ 400°C, synthetic resin coating, nano-carbon coating or black ceramics, so as to absorb the incident high-energy light source converted into heat.

The condenser cover 2 includes a cylindrical section 23 and a conical section 24. The front end surface of the oil storage cylinder 7 is provided with a mounting hole for the condenser cover 2 to fit, and the rear end of the condenser cover 2 has a limit oil guide The plug 25 of the rope 4, and the plug 25 is provided with a conduction hole 26 leading to the front end of the isolation cover 5 and the oil storage cylinder 7 .

The plug 25 is a tube whose axis is perpendicular to the axis of the condenser 2 , and whose tube hole forms a through hole 26 , which communicates with the cavity of the condenser 2 . The conduction hole 26 can be depending on the size or shape of the process, use double side holes or only use one side hole to mix the air flow through the atomized smoke, so as to adjust the draw resistance of the whole photon atomized cigarette.

An outwardly extending annular portion 22 is provided on the outer wall of the front end of the condenser cover 2; the annular portion 22 is used for positioning bonding or thermal bonding installation in the installation hole of the oil storage cylinder 7. The inner wall of the front end of the oil storage tank 7 is provided with a snap-fit ring that is clamped with the end of the isolation cover 5 to realize the installation of the isolation cover 5. Obviously, the isolation cover 5 can also be connected to the oil storage tube by threaded connection or bonding. 7 Make the connection.

The end surface of the oil storage cylinder 7 in contact with the isolation cover 5 is provided with a sealing ring 3 for sealing the end of the isolation cover 5 . Simultaneously, the sealing ring 3 can also seal the connection between the condenser cover 2 and the installation hole of the oil storage cylinder 7 .

The rear end of the oil storage tube 7 is provided with a detachable cover 10 to facilitate the disassembly and replacement of the internal parts of the oil storage tube 7 .

An oil injection hole 11 with a hole plug 12 is arranged on the rear end surface of the oil storage cylinder 7. There are two oil injection holes in this embodiment, one is used for adding oil, and the other is used for discharging the oil storage cylinder when the oil is added. The air is convenient for the addition of e-liquid.

A retaining ring 9 overlapping with the cover body 10 is provided on the outer wall of the air guide tube 8 to realize the positioning of the isolation cover 5 .

The condensing cover can be made of high thermal conductivity copper, aluminum, etc., through the black coating on the inner wall of the cavity, the incident high-energy light source is converted into a high temperature that can atomize the smoke at the tip.

The conduction hole on the plug can not only block the damage caused by the direct irradiation of the high-energy light source to the human tissue, but also adjust the suction resistance of the atomized smoke, and can also be used as a control device for the photon smoke rod connected to the front end. The source of the signal.

When working, the high-energy light source is irradiated in the light-to-heat conversion cavity of the condenser cover. After the light-to-heat conversion cavity is irradiated by the converged high-energy light source, the end part heats up rapidly, and a large amount of heat is directly conducted to the light-to-heat conversion cavity of the light-to-heat conversion cavity through the light-to-heat conversion cavity. The conical surface of the outer ring makes the e-liquid directly gasified on the oil guide rope wrapped in the conical shape of the outer ring to form atomized smoke, and finally the atomized smoke is guided by the isolation cover and the air duct for consumption inhaled.

Embodiment two

The photon smoke atomizer shown in Figure 4-6 is connected to a high-energy light source when in use, absorbs the high-energy light source and converts it into a heat source; it includes an oil storage cylinder 7 with an oil storage cavity and a connecting part 1 at the front end, installed in the storage tank The condenser cover 2 on the front end surface of the oil cylinder 7 is used to receive the high-energy light source and realize light-to-heat conversion, and the oil guide rope 4 wound on the outer wall of the condenser cover 2 is located in the oil storage cylinder 7 to cover and close the condenser cover 2, and the air duct 8 communicating with the isolation cover 5 and extending to the rear end face of the oil storage cylinder 7;

The opening end of the isolation cover 5 faces the front end of the oil storage cylinder 7; the isolation cover 5 is provided with oil guide holes 51 and 52 for the oil guide rope 4 to pass through, and the oil guide rope 4 passes through the isolation cover 5 The oil guide holes 51, 52 enter into the oil storage cavity of the oil storage tube 7; the size of the oil guide rope 4 matches the size of the oil guide holes 51, 52, so as to ensure that the e-liquid with a certain viscosity in the oil storage tube 7 can pass through the oil guide The rope 4 slowly reaches the part wound on the outer wall of the condenser cover 2, and does not pass through the oil guide holes 51, 52 directly into the isolation cover 5 in large quantities, so as not to cause the smoke oil to flow out from the air guide tube 8 and cause the cigarette to seep. leak.

The concentrating cover 2 is provided with a ventilation structure that conducts the isolation cover 5 and the front end of the oil storage tube 7 , and the wall surface of the light-to-heat conversion chamber is coated with a black coating 21 . The black coating 21 is a black coating 21 with a light absorption rate of 85-100% such as a carburized layer with high thermal conductivity and heat resistance ≥ 400°C, synthetic resin coating, nano-carbon coating or black ceramics, so as to absorb the incident high-energy light source converted into heat.

The condensing cover 2 is funnel-shaped, and the front end surface of the oil storage cylinder 7 is provided with a mounting hole for the condensing cover 2, and the rear end of the condensing cover 2 has a plug for limiting the oil guide rope 4 25, and the plug 25 is provided with a conduction hole 26 leading to the front end of the isolation cover 5 and the oil storage cylinder 7 .

The plug 25 is a cylinder, which is detachably connected to the condenser cover 2 , and the axis of the through hole 26 is perpendicular to the axis of the condenser cover 2 .

An outwardly extending annular portion 22 is provided on the outer wall of the front end of the condenser cover 2; the annular portion 22 is used for positioning bonding or thermal bonding installation in the installation hole of the oil storage cylinder 7. The inner wall of the front end of the oil storage tank 7 is provided with a snap-fit ring that is clamped with the end of the isolation cover 5 to realize the installation of the isolation cover 5. Obviously, the isolation cover 5 can also be connected to the oil storage tube by threaded connection or bonding. 7 Make the connection.

The end surface of the oil storage cylinder 7 in contact with the isolation cover 5 is provided with a sealing ring 3 for sealing the end of the isolation cover 5 . Simultaneously, the sealing ring 3 can also seal the joint between the tapered pipe section of the condenser cover 2 and the installation hole of the oil storage cylinder 7 .

The rear end of the oil storage tube 7 is provided with a detachable cover 10 to facilitate the disassembly and replacement of the internal parts of the oil storage tube 7 .

An oil injection hole 11 with a hole plug 12 is arranged on the rear end surface of the oil storage cylinder 7. There are two oil injection holes in this embodiment, one is used for adding oil, and the other is used for discharging the oil storage cylinder when the oil is added. The air is convenient for the addition of e-liquid.

A retaining ring 9 overlapping with the cover body 10 is provided on the outer wall of the air guide tube 8 to realize the positioning of the isolation cover 5 .

The condensing cover can be made of high thermal conductivity copper, aluminum, etc., through the black coating on the inner wall of the cavity, the incident high-energy light source is converted into a high temperature that can atomize the smoke at the tip.

When the rear end of the condenser is connected to the plug 25, in order to ensure that the air exchange between the light-to-heat conversion cavity of the condenser and the outside air does not cause the suction resistance of the entire photon atomized cigarette to be too large, it is necessary to place a plug on the plane of the plug. The conduction hole below 1mm shall be subject to the ventilation volume suitable for the suction of the whole photon atomized smoke. This will not only ensure the suction of the photon atomized smoke, but also ensure the destruction of the plug and the The condensing cover is reliably connected, so that the plug 26 will not accidentally fall off from the condensing cover during storage, transportation and use. At the same time, it can also block the incident high-energy light source while ventilating, so as not to pass through the air duct 8 and damage the smoke. The body, on the other hand, also serves as an auxiliary fixing measure for the oil guide rope 4 on the condenser, and prevents the upper oil guide rope 4 from slipping off from the condenser during production, storage or use.

Its mode of use is the same as that of Embodiment 1.

Embodiment three

The photon smoke atomizer shown in Figure 7-9 is connected to a high-energy light source when in use, absorbs the high-energy light source and converts it into a heat source; it includes an oil storage cylinder 7 with an oil storage chamber and a connecting part 1 at the front end, installed in the storage tank The condenser cover 2 on the front end surface of the oil cylinder 7 is used to receive the high-energy light source and realize light-to-heat conversion, and the oil guide rope 4 wound on the outer wall of the condenser cover 2 is located in the oil storage cylinder 7 to cover and close the condenser cover 2, and the air duct 8 communicating with the isolation cover 5 and extending to the rear end face of the oil storage cylinder 7;

The opening end of the isolation cover 5 faces the front end of the oil storage cylinder 7; the isolation cover 5 is provided with oil guide holes 51 and 52 for the oil guide rope 4 to pass through, and the oil guide rope 4 passes through the isolation cover 5 The oil guide holes 51, 52 enter into the oil storage cavity of the oil storage tube 7; the size of the oil guide rope 4 matches the size of the oil guide holes 51, 52, so as to ensure that the e-liquid with a certain viscosity in the oil storage tube 7 can pass through the oil guide The rope 4 slowly reaches the part wound on the outer wall of the condenser cover 2, and does not pass through the oil guide holes 51, 52 directly into the isolation cover 5 in large quantities, so as not to cause the smoke oil to flow out from the air guide tube 8 and cause the cigarette to seep. leak.

The concentrating cover 2 is provided with a ventilation structure that conducts the isolation cover 5 and the front end of the oil storage tube 7 , and the wall surface of the light-to-heat conversion chamber is coated with a black coating 21 . The black coating 21 is a black coating 21 with a light absorption rate of 85-100% such as a carburized layer with high thermal conductivity and heat resistance ≥ 400°C, synthetic resin coating, nano-carbon coating or black ceramics, so as to absorb the incident high-energy light source converted into heat.

The condensing cover 2 is funnel-shaped; the front end surface of the oil storage tube 7 is provided with a through hole with a diameter smaller than the diameter of the opening end of the condensing cover 2 for the passage of a high-energy light source; the opening end of the condensing cover 2 is lapped on The inner wall of the front end of the oil storage tube 7 covers the through hole; the rear end of the condenser cover 2 is closed and this end is provided with a return spring 13, and the other end of the return spring 13 overlaps with the isolation cover 5 inner wall. The elastic force of back-moving spring 13 is as the criterion that just can press down condenser and be attached to sealing ring 3 to be airtight, cover 10 is threadedly connected with shell 7, and cover 10 is fixed on air duct 8 by retaining ring 9 fixedly connected thereto. The pre-tightened force presses the entire condensing cover, so that the force of the return spring 13 pressed against the condensing cover can be adjusted within a certain range.

The rear end of the condenser cover 2 is provided with a cylindrical part 24' which is socketed with the return spring 13, so as to realize the effective positioning of the return spring.

An outwardly extending annular portion 22 is provided on the outer wall of the front end of the condensing cover 2 to increase the contact area with the side end surface of the oil storage tube 7 and ensure effective sealing. The inner wall of the front end of the oil storage tank 7 is provided with a snap-fit ring that is clamped with the end of the isolation cover 5 to realize the installation of the isolation cover 5. Obviously, the isolation cover 5 can also be connected to the oil storage tube by threaded connection or bonding. 7 Make the connection.

The end surface of the oil storage cylinder 7 in contact with the isolation cover 5 is provided with a sealing ring 3 for sealing the end of the isolation cover 5 . Simultaneously, the sealing ring 3 also serves as a sealing member for contacting and sealing the end surface of the condenser cover 2 and the oil storage cylinder 7 .

The rear end of the oil storage tube 7 is provided with a detachable cover 10 to facilitate the disassembly and replacement of the internal parts of the oil storage tube 7 .

An oil injection hole 11 with a hole plug 12 is arranged on the rear end surface of the oil storage cylinder 7. There are two oil injection holes in this embodiment, one is used for adding oil, and the other is used for discharging the oil storage cylinder when the oil is added. The air is convenient for the addition of e-liquid.

The condensing cover can be made of high thermal conductivity copper, aluminum, etc., through the black coating on the inner wall of the cavity, the incident high-energy light source is converted into a high temperature that can atomize the smoke at the tip. The preferred gap δ≤0.3mm between the outer edge of the ring part and the inner wall of the isolation cover ensures the reliability of the assembled mechanism.

When the consumer inhales the photon atomizer of this embodiment, the negative pressure in the consumer's oral cavity is first transmitted to the small airtight space formed by the sealing ring 3 and the isolation cover 5 through the air duct 7. The outer ring and the side close to the tapered outer surface form an active force pointing to the rear end. At this time, the elastic force of the return spring 13 is partially subtracted by the active force of the negative pressure, so that the condenser 2 faces the photon atomizer The mouth end moves, the closed small environment is opened, the relatively static air pressure at the front end communicates with the air pressure in the isolation cover, and the high-energy light source beam input from the front end heats up in the sealed black material inside the condenser cover 2, making the smoke oil gas on the outer wall of the ring cone When the consumer inhales a sufficient amount of atomized smoke, the pressure inside the atomizing chamber is zero, and the condenser cover 2 fits and seals with the wall of the oil storage tank under the elastic force of the return spring 13, and the pumping is completed. The process of taking a puff of electronic cigarettes.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. When in use, the atomizer of the photon cigarette is connected with a high-energy light source, absorbs the high-energy light source and converts the high-energy light source into a heat source; the method is characterized in that: the device comprises an oil storage cylinder with an oil storage cavity, a light hood, an oil guide rope, an isolating cover and an air duct, wherein the front end of the oil storage cylinder is provided with a connecting part, the light hood is arranged on the front end face of the oil storage cylinder and used for receiving a high-energy light source and realizing photo-thermal conversion, the oil guide rope is wound on the outer wall of the light hood, the isolating cover is arranged in the oil storage cylinder and covers and seals the light hood, and the air duct is communicated with the isolating cover and extends to the rear end face of the oil storage cylinder;

the opening end of the isolation cover faces the front end of the oil storage cylinder; the isolating cover is provided with an oil guide hole for the oil guide rope to pass through, and the oil guide rope passes through the oil guide hole of the isolating cover and enters the oil storage cavity of the oil storage cylinder;

the condensing cover is provided with a conducting isolation cover and a ventilation structure at the front end of the oil storage cylinder, and the wall surface of the photo-thermal conversion cavity is coated with a black coating;

the light-gathering cover is funnel-shaped, a through hole with the diameter smaller than that of the opening end of the light-gathering cover and through which the high-energy light source passes is formed in the end face of the front end of the oil storage barrel, and the opening end of the light-gathering cover is lapped on the inner wall of the front end of the oil storage barrel and covers the through hole;

the rear end of the light-gathering cover is provided with a plug of the limiting oil-guiding rope, and the plug is provided with a conducting isolation cover and a conducting hole at the front end of the oil storage cylinder.

2. A photonic smoke atomizer according to claim 1, characterized in that: and a mounting hole for sleeving the light condensing cover is formed in the front end face of the oil storage cylinder.

3. A photonic smoke atomizer according to claim 2, characterized in that: the plug is a pipe body, the axis of the plug is perpendicular to the axis of the light-gathering cover, and the pipe hole of the plug forms a conducting hole and is communicated with the cavity of the light-gathering cover.

4. A photonic smoke atomizer according to claim 2, characterized in that: the plug is a cylinder and is detachably connected with the light condensing cover, and the axis of the through hole on the plug is perpendicular to the axis of the light condensing cover.

5. A photonic smoke atomizer according to claim 1, characterized in that: the rear end of the light gathering cover is closed, a reset spring is arranged at the rear end of the light gathering cover, and the other end of the reset spring is overlapped with the inner wall of the isolation cover.

6. The photonic smoke atomizer of claim 5, wherein: the rear end of the light condensing cover is provided with a cylindrical part sleeved with the reset spring.

7. A photonic smoke atomizer according to any one of claims 1 to 6, characterized in that: an annular part extending outwards is arranged on the outer wall of the front end of the light condensing cover; the inner wall of the front end of the oil storage cylinder is provided with a clamping ring which is clamped with the end part of the isolation cover.

8. A photonic smoke atomizer according to any one of claims 1 to 6, characterized in that: the end face of the oil storage cylinder, which is contacted with the isolation cover, is provided with a sealing ring for sealing the end part of the isolation cover.

9. A photonic smoke atomizer according to any one of claims 1 to 6, characterized in that: the rear end of the oil storage cylinder is provided with a detachable cover body.

10. A photonic smoke atomizer according to any one of claims 1 to 6, characterized in that: and an oil filling hole with a hole plug is arranged on the end face of the rear end of the oil storage cylinder.

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