WO2023106950A1

WO2023106950A1 - Modular hyperbaric chamber and sealing systems

Info

Publication number: WO2023106950A1
Application number: PCT/RO2022/000013
Authority: WO
Inventors: Aurel ISPAS; Andrei-Thomas ISPAS
Original assignee: Ispas Aurel; Ispas Andrei Thomas
Priority date: 2021-12-06
Filing date: 2022-12-05
Publication date: 2023-06-15
Also published as: RO135633A0

Abstract

The invention refers to a hyperbaric chamber with modular construction intended for high-pressure oxygen therapy, between 1...3 times atmospheric pressure, for treatments in medical institutions, maintenance activities and fitness rooms, training, and testing in training centers for divers or for emergency interventions at the scene of accidents. The camera according to the invention is composed of two main and secondary cylindrical modules (1 and 4), respectively, the secondary module (4) is provided with an access window (9) through a curved door (5) made of transparent materials, a system of lifting and closing the door (5) consisting of some sliding rollers (43) running on a circular track (14) made of circularly arranged profiles on both sides of the window (9), on the curved door (5) being arranged some lifting rollers (46) that lift the door (5) on some lifting blades (47 and 50) for lifting and changing the direction of movement, as well as some central, vertical rollers (44) on the curved door (5) being mounted a rubber handle (48) for opening from the inside and a double-turned handle (49), outside, with the lever necessary to lift the window (9), on the floor there is a track (11 ), made of profiles, on which it runs a cart (12) or a mobile stretcher, the enclosure being closed at the ends with two covers (2 and 3) lateral, fixed and mobile.

Description

MODULAR HYPERBARIC CHAMBER AND SEALING SYSTEMS

Holders: Aurel Ispas, Andrei Thomas Ispas

Classification: A61 G10/02, A61 G10/00

The present invention refers to a hyperbaric chamber with modular construction, intended for oxygen therapy at high pressure, between 1...3 times atmospheric pressure, for treatments in medical institutions, maintenance activities in fitness rooms, training, and testing in health centers training for divers, or for emergency interventions at the scene of accidents.

Different types of constructive variants of hyperbaric chambers are known depending on the maximum allowed internal pressure, destination, method of access inside, the materials from which they are built and depending on the horizontal or vertical configuration.

Depending on the maximum allowed internal pressure, two categories of hyperbaric chambers are differentiated, respectively, low-pressure hyperbaric chambers, which allow an internal pressure of 1 ...4 times atmospheric pressure, and high-pressure hyperbaric chambers, which allow a maximum internal pressure of up to at three times atmospheric pressure. Low pressure hyperbaric chambers are used for personal use, fitness maintenance activities, testing and training of athletes or divers. High-pressure hyperbaric chambers are intended for medical use or intervention in the event of disasters or protection in tunnels in the event of fires.

Depending on the interior access variant, hyperbaric chambers with access through the viewing window, hyperbaric chambers with access through one or more side doors different from the viewing window or hyperbaric chambers that combine the two access systems are known.

Depending on the materials from which they are made, there are known hyperbaric chambers built from rigid materials, especially steel or aluminum, and collapsible hyperbaric chambers made especially from plastic or rubber, known as inflatable hyperbaric chambers. These types of hyperbaric chambers use different methods and technical solutions to seal access doors and ensure mobility or the possibility of being moved.

A hyperbaric chamber is known, according to patent RO132531 B1 , made up of a central cylindrical body, which has access and sealing ensured by means of a curved inner porthole that slides along a linear sliding path, fixed longitudinally on the cylinder body of the hyperbaric chamber. The sliding track is made up of bars that allow longitudinal sliding between the open and closed position, between some limiters. The operation of the porthole is mechanical, and the sealing is done by the force applied, from the inside, by some pistons by means of connecting rods, the porthole being pressed on profiled sealing gaskets. This constructive type of hyperbaric chamber, equipped with access doors located inside the hyperbaric chamber, is also found in the case of other patents, such as: JP2010230136, KR101638894, US20130056995A1 , 5327904A, US20130047988A1 ,

CN210542213U.

Another group of known technical solutions is based on the use of external access doors to the hyperbaric chamber, the closing being done by exerting a pressure, from the outside, greater than the internal pressure of the hyperbaric chamber, the sealing being done by pressing the access doors, mechanically or hydraulically , on some profiled gaskets, such constructive solutions being encountered patents such as: R20110004310U, US20100059059A1 , US7900629, CN1715609A, JP2008-513711 A, US9138366B2, RU2392914C1 ,

US20130047988A1 , US9186232B1 , KR20080002753U, US20100059059A1 .

Known hyperbaric chambers have many disadvantages, the most important being that, to ensure high internal pressures, hyperbaric chambers have large dimensions, requiring their fixed location and installation in dedicated spaces where weight and size can be restrictive. Due to the large dimensions and weights, the hyperbaric chambers known in the state of the art are difficult to transport, requiring means of transport and specialized high-capacity equipment. Also, the high degree of complexity requires specialized maintenance personnel, the costs of service operations and of moving spare parts, pistons, or gaskets, being high. Due to the previously presented causes, moving hyperbaric chambers to the site of disasters for emergency interventions is not possible. Also, in the case of monobloc constructions with access through the access-visit window, the entry and exit of the user in and out of the hyperbaric chamber or the removal of the person from the premises in case of emergency, or people with fractures, or people with heart problems or in state of unconsciousness is difficult, painful and can endanger the life of the user. Another disadvantage identified in the state-of-the- art monobloc constructive solutions is related to the fixed capacity of the room that allows the treatment of a strict number of people and in a single sitting position, lying down or in a chair. Another disadvantage of known constructive solutions, which manifests itself especially in constructive variants based on movements of the access door or porthole, over long distances and based on sliding movement, which impose friction between the running track and the sliding element, is the fact that, the repetition of sliding movements and repeated friction electrostatically charge different electrically non-conductive parts, such as a porthole made of plastic material, and when a critical level of electrostatic charges is reached, an electrostatic discharge can be caused to the neighboring electrically conductive elements, this fact being equivalent to the initiation of a deflagration in the internal atmosphere of the hyperbaric chamber, the atmosphere with a high degree of oxygen, or with an insufficiently controlled gas mixture, which can be risked in case of such users as deep and shallow divers that require pressure testing and gas mixture to avoid accidents.

A first technical problem that the invention solves is the reduction of the weight of the hyperbaric chambers and the transport dimensions, the modules being able to be assembled and disassembled easily, the disassembled elements allowing an ergonomic packing and implicitly reducing the dimensions of the parcel to be transported and handled.

Another technical problem that the invention solves is the fixed capacity of the hyperbaric chambers, which does not allow the increase of the number of people, depending on the specific needs and the impossibility of changing the internal geometry of the known chambers, the invention solving this problem by changing the diameter of the cylindrical modules used, or on diameters of up to one meter for use in the lying position, or on diameters of up to 1 .5...2.2 m for use in the sitting or standing position.

Another technical problem solved by the invention is the sealing of the fixed joints or the mobile elements of the modules, the invention foreseeing gasket systems with asymmetric sealing, this technology not being used before the invention in the technology of hyperbaric chambers. The asymmetric sealing gasket systems provided in the invention also solve the problems of tightness, fixing of the modules, frequent and relatively short breaks, or shears, of the profiled gaskets used in the known variants. The problem of shearing of profiled gaskets arises because the determination of the elastic modulus, at high pressures, denotes a high elasticity and a stiffness under compression or tension, the difference between the elastic deformation and the plastic deformation leading to a shear equivalent. Elastic modulus, also known as Young's modulus, relates the compressive or stretching force of an object to the resulting change in length. As long as the deformation is not too great, a material like rubber can stretch, then return to its original shape and size when the force is removed, this is elastic deformation. If the pressing force increases beyond a limit, the rubber element may break or shear. The patented technical solution ensures a sealing of the entrance door in two stages, in the first stage a tightening pressure is exerted, according to Young's calculation model of 0.4078864851912 kgf/cm² equivalent to 4 Newtons/cm² and in the second sealing phase a pressure of 4.078864851912 kgf/cm² equivalent to 4 bars, the pressure being sufficient to pressure seal the entrance door to medical hyperbaric chambers.

Another problem that the invention solves is the control of the gas mixture injected inside the chamber or that is formed along the way, allowing the exact establishment of the pressure conditions and the concentrations of different gases that make up the mixture, determining the safe conditions to which the user can be subjected or the diver eliminating the risks of accidents due to lack of adaptation and/or caused by the mixture of gases. The hyperbaric chamber built from cylindrical modules and fixed or movable lateral end caps, in which the cylinder bodies are differentiated into main modules and secondary modules that can be assembled in various configurations, of which at least one secondary module provided with an access window in which is fitted with a curved door that uses the force of gravity both to rotate inward in the opening movement and to rotate in the opposite direction to close the room, on the curved door being mounted sliding rollers that transform the linear movement into a circular movement, on the inner circumference of the cylinder with window being positioned a circular track, having at the end towards the closing direction some lifting blades that cause the assembly formed by the door and rollers to be lifted by pressing the door on the seals on the edge of the window and closing the enclosure, the curved door being equipped with horizontal and vertical sliding rollers as well as lifting rollers, on the inside of the door a high-grip rubber handle is provided for opening from the inside, and on the outside of the door a doubleturned handle with the lever necessary to operate the door, the chamber having at least one main cylinder with a diameter equal to or greater than the secondary cylinder, allowing the introduction the secondary cylinder inside the main cylinder for transport and storage, the joints between modules or between modules and covers being made by means of metal connecting flanges sealed with a system of asymmetric gaskets, of which one or more profiled gaskets with constant dimensions in the case of modules with equal diameters, or with varying size in the case of joints between modules with different diameters and one or more inflatable gaskets that ensure the sealing and mechanical blocking of the joints, the sealing of the door and window being carried out by a system of asymmetric gaskets, of which one gasket profiled that makes an ethane primary saddle and an inflatable gasket that ensures the final sealing, the hyperbaric chamber having two profiles on the inner floor that make the running path for carts or stretchers on which users can be placed, the mobile end caps allowing the access and exit of disabled people or removal from the premises of people in case of emergency, the hyperbaric chamber being also equipped with a pressure and gas mixture control and monitoring system, composed of gas tanks, valves and connecting elements, a storage and mixture vessel and a measurement system and control.

The proposed invention presents the following advantages in relation to the state of the art:

- the modular construction allows the dimensioning of the assembly according to the needs of use, different modules can be ordered, or added later, or the premises can be removed or divided into several modules, allowing the adaptation of the number of people who can simultaneously use the hyperbaric chamber;

- ensures a sealing of the hyperbaric chamber with gaskets that ensure resistance over time, the interventions to carry out repairs being minimal, without special devices and with economical spare parts, the simplicity of the modules allowing the transport and assembly at the place of occurrence of accidents, disasters, calamities, increasing the chances of saving injured people;

- ensures the possibility of internal pressurization at a pressure of more than three times the atmospheric pressure and the gas mixture, creating the conditions for use in the medical field;

- allows changing the internal geometry of the hyperbaric chamber by changing the diameter of the cylindrical mode used, ensuring either diameters of up to one meter, intended for placing the user in a lying position, or diameters of up to 1 .5...2.2 m for use in sitting or standing position.

- the modules according to the invention allow the insertion of some into each other and the ergonomic packaging of the components in order to reduce the dimensions of the package, which facilitates the transport, handling, but also the unpacking of the package and its assembly;

- ease of installation, the modules being relatively small, the mechanisms being few, having a high portability being mounted on wheels;

- the simple construction of the closing and opening and sealing elements reduces the cost of production, maintenance and those involving service operations compared to large hyperbaric systems;

- the invention eliminates the need for large transport and handling equipment or specialized assembly devices; - through the simple construction of the access and inspection door or porthole and the sealing system, actions based on hydraulic pistons or mechanical assemblies are eliminated;

- the friction between the sliding mobile elements is eliminated, eliminating the risk of electrostatic charging of the room surfaces, canceling the risk of producing electrostatic discharges;

- ensures the easy extraction of the person from inside the room, in case of emergency or in the case of disabled people who cannot move, by removing the stretcher or the chair in which the user is seated, using the end caps as on doors;

- the hyperbaric chamber can also be equipped with a pressure and gas mixture control and monitoring system, establishing the safe conditions of use for each person depending on their state of health.

An example of an embodiment of the invention is given next, in connection with fig. 1...15, which represents:

- fig. 1 represents a side view of the main mode 1 with the largest diameter in which the rest of the transport elements are inserted;

- fig. 2 represents the main module 1 and the way to position the covers 2 and 3 for packing for transport;

- fig. 3 represents the way in which the secondary module 4 with smaller diameter enters the main module 1 ;

- fig. 4 represents the elements of a hyperbaric chamber for assembly consisting of the main body 1 , two covers 2 and 3, the secondary body 4, the curved door 5 equipped with a handle 6, the modules having support supports with rollers 7, the main module and the covers being pre-equipped with cable glands 8 for connecting to the gas installation, the secondary module having a cut-out 9 which will constitute, after equipping, the window through which one enters and leaves the module using the curved door 5, the hyperbaric chamber being equipped with a PLC monitor 10;

- fig. 5 represents an assembled hyperbaric chamber in which the open mobile cover and the back of the cart are shown, which is inserted using this cover as a horizontal access door when it is necessary to enter or exit in a horizontal position sitting on a cart or stretcher;

- fig. 6 represents the longitudinal section of the modular hyperbaric chamber composed of the main body 1 , the side covers 2 and 3, the secondary module 4, the curved door 5, supports with rollers 7 supporting the modules, the gas seals 8 mounted on the body of the module 1 and the PLC monitor 10 , on the inner floor of the hyperbaric chamber, there are longitudinal profiles 11 , of different shapes, which constitute the running track for the trolley 12 equipped with a backrest, the covers having closing and sealing clips 13, the main module being equipped with a circular running track 14 positioned on the inner circumference of the chamber cylinder, on both sides of the access window, on which the curved door rolls 5 in the closing or opening movement;

- fig. 7 represents detail A from fig. 6, representing the cross-section of the sealing elements in the case of a fixed joint between the main module 1 of the hyperbaric chamber and the fixed side cover 2, the cover 2 and the module 1 each having a joint and sealing flange 15, attached by means of a cord weld 16, the ring flanges each having a circular recess 17 and a rectangular channel 18 symmetrically drilled, for the insertion of inflatable gaskets 19 in the circular channel 17 respectively of the profiled gasket 20 in the rectangular channel 18, the ring flanges also having a row of holes drilled 21 in which clamping screws 22 are inserted;

- fig. 8 represents detail C from fig. 6, representing the cross-section of the sealing elements in the case of a mobile joint between the main module 1 and a mobile cover 3, a profiled flange 23 being provided at the end of the module 1 , and a profiled flange 24 being provided at the end of the mobile cover 3, both flanges being attached to by means of welding cords 25, the flange of the module presenting some centering elements by means of a screw 26, both flanges having channels in which two gaskets are inserted, one profiled or inflatable cylindrical 27 and the inflatable gasket 28, ensuring the sealing and blocking of the closure;

- fig. 9 represents detail B from fig. 6, representing the cross-section of the sealing elements in the closing area of the curved door 5 on the edge of the window 9 cut in the secondary module 4, the curved door having a collar 29 and the edge of the window a collar 30, between which the gaskets of the respective sealing system are positioned, profiled gasket 31 and inflatable gasket 32;

- fig. 10 represents the cross-section of the sealing and joining elements in the case of enclosures with small diameters of up to one meter, when the modules have equal diameters, by means of a connecting flange 33, having channels for the insertion of inflatable gaskets 34, stiffened by points of welding 35 or tightened by screws 36 being provided with two profiled inner gaskets 37;

- fig. 11 represents the cross-section of the sealing and joining elements in the case of large-sized modules having equal diameters, by means of a profiled flange 38, provided with profiled channels for the insertion of inflatable gaskets 39, holes 40 for screws being made in the flange, the joining system having and the profiled seal 41 between the flange 38 and the modules 1 ;

- fig. 12 represents the cross-section of the sealing and joining elements in the case of modules having unequal diameters, by means of a profiled flange 38, provided with profiled channels for the insertion of inflatable gaskets 39, holes 40 being made in the flange for the insertion of assembly tightening screws, between the flange 38 and modules being placed a gasket 42 profiled differently, thinner towards the module with the larger diameter and thicker towards the module with the smaller diameter, compensating the difference in level between the modules;

- fig. 13 represents a cross-section of the hyperbaric chamber at the level of the window and the curved door, having a body of the secondary module 4, on which the circular running track 14 is placed inside, on which the curved door 5 made of polycarbonate moves with rolling motion using the force gravity, the curved door 5 having a horizontal roller system 43 running on the circular track 14 on the curved door being fixed and a vertical roller mechanism 44 centering the curved door 5 on the track 14, the track 1 being fixed on the body of the hyperbaric chamber by means of spacers with screw clamps 45, the curved door being provided with lifting rollers 46 that raise the curved door on the lifting lamella 47, the curved door 5 being provided with a rubber grip handle 48 for opening from the inside, and a handle for actuation from the outside 49 on the body of the camera also being provided with a lamella 50 for changing the direction of movement of the curved door, and a buffer 51 for limiting e of the movement of the door when closing;

- fig. 14 represents detail A of fig. 13, in which the running track 14 shows the lifting lamella 47 fastened by means of a screw 52;

- fig. 15 represents the scheme and components of the internal pressure monitoring and control gas mixing system, which includes the modular hyperbaric chamber 1 , the pressure and gas concentration measurement unit 53, the mixing vessel 54, the gas mixture analysis unit 55, connection and communication paths 56, the tanks 57 for different gases that are part of the mixture, the tanks being connected to the mixing chamber 54 through communication paths 58 by means of valves 59 all connected to the PLC unit 60.

In a constructive variant, the modular hyperbaric chamber is composed of the main cylindrical module 1 , the secondary module 4, the fixed side cover 2 and the mobile side cover 3, in module 1 the rest of the components can be inserted for packaging and transport, the secondary module 4 having an equal external diameter or smaller than the inner diameter of the main module 1 , the hyperbaric chamber having supporting supports with rollers 7 and plugs 8 for connecting the chamber to the gas installation.

Module 1 of the room has a cut-out 9 which constitutes the access window inside, which closes with the curved door 5 made of transparent materials and equipped with an inner handle 48 and an outer handle 49, the curved door performing a circular rotation movement on a circular track 14 made of profiles mounted circularly on one side and the other of the access window 9, the curved door being operated manually but also moving under the effect of the gravitational force given by its own weight, the track 14 having at the end towards the direction of closing a buffer limiting the movement 51 .

The modular camera shown in this example has two side covers at the ends of the modules, one fixed 2 at one end and a mobile cover 3 at the other end, the modulation allowing various configurations of modules and covers, only fixed covers of the fixed cover 2 type or covers can be used mobile cover type 3. The modular hyperbaric chamber is equipped with a PLC monitor 10 to control the pressure and gas mix inside the chamber and on the inner floor of the hyperbaric chamber there are longitudinal profiles 11 , of different shapes, which constitute the running path for the trolley 12 equipped with rollers being equipped with a backrest, on the lower track the stretchers with patients can be inserted in the case of medical use, the access of the trolley and the stretchers being made through the mobile cover 3 which closes by tightening the clamp 13.

The fixed side cover 2 is joined to the module 1 by means of flanges 15, attached by means of welding cords 16, each flange having a circular recess 17 and a rectangular channel 18, symmetrically designed, in the channel 17 the inflatable gasket 19 is inserted and in the circular channel 18, the profiled gasket 20 being inserted, the flanges having a row of holes 21 in which clamping screws 22 are inserted; The mobile cover 3 is attached to the module 4 by means of a hinge and the clamp 13, the sealing being made by means of a system of profiled flanges and gaskets of which the flange 23 attached to the body of the module 4 and the profiled flange 24 being attached to the mobile cover 3, both flanges being attached by means of welding cords 25.

The flange 23 attached to the module 4 has some centering elements through the screw 26.

The flanges 23 and 24 have channels in which the inflatable gaskets 27 and 28 enter, which, when inflated, ensure both sealing and blocking of the assembly, closing and sealing the enclosure all around;

The module 4 having a cut-out 9 has a curved access door 5 which can be made of transparent materials that are operated manually but also move under the action of the gravitational force given by its own weight, the door performing a circular translational movement on a circular track 14 placed on the inside of module 4 on one side and the other of the window 9 cut out in module 4.

The curved door 5 has a system of horizontal rollers 43 mounted on the circular running track 14 on the curved door, a mechanism with vertical rollers 44 being mounted that centers the curved door 5 on the running track 14, the treads of the running track 14 being fixed on the body of the hyperbaric chamber 4 by means of spacers fastened with screws 45.

The curved door 5 also has a lifting roller system 46 that lifts the curved door on the lifting lamella 47 and the lamella 50 when the curved door reaches the closing position, making a first seal by pressing the curved door 5 on the profiled gasket 31 located on edge of the window 9 near the collar 30 of the window 9.

The curved door 5 has a collar 29 along its contour, and the window 9 has on its edge a collar 30 in which a semicircular channel is made in which an inflatable seal 32 is placed, between the collar 30 of the window 9 and the collar 29. of the curved door 5 being placed a profiled gasket 31 for the primary sealing of the curved door 5 when it is closed. The closing of the curved door 5 is done by rotating it making a circular movement of translation on the track 14, at the end of the closing movement the curved door is lifted by the lifting rollers 46 placed by the door and they are lifted by the lifting blades 47 and 50 The sealing of curved doors when closing is done by a system of asymmetric gaskets shown in fig. 9, in which the curved door 5 has a collar 29 profiled on the edge, and the window 9 has a collar 30 profiled on the edge, in the collar 30 being profiled a channel in which the inflatable gasket 32 is inserted, and between the collars of the door and the window being positioned a profiled seal 31 . When closing the curved door 5, the lifting slats press the door against the profiled seal 31 , making the first sealing stage, followed by the second sealing stage in which the sealing is made by the inflatable gasket 32;

The actuation of the curved door 5 is done manually, but towards the end of the closing stroke and towards the end of the opening stroke, the curved door is also exerted by its own weight, which in the case of closing keeps the door pressed for the first stage of sealing and when opening, the weight of the door keeps it in position open.

In this constructive variant, the module 1 is closed at the end with a fixed cover 2 joined to the module 1 being represented in fig.7. The connection is made by means of flanges 15, attached by means of welding beads 16, each flange having a circular recess 17 and a symmetrical rectangular channel 18, in the channel 17 being inserted the inflatable seal 19 and in the circular channel 18 being inserted, the profiled seal 20, the flanges having a row of holes 21 in which the screws 22 are inserted. The mobile cover 3 is attached to the module 4 by means of a hinge and the clamp 13, the sealing being achieved by means of a system of profiled flanges and seals represented in fig. 8, in which the flange 23 is attached to the body of the module 4 and the flange 24 is attached to the mobile cover 3, the attachment of the flanges to the modules by means of welding beads 25 and the sealing of the cover when is closing, being done by the inflatable seals 27 and 28.

Connecting the modules to each other and sealing the joint is done by means of asymmetric flanges and gaskets of the type shown in fig. 10, in which the assembly is made by means of a connecting flange 33, having channels for the insertion of inflatable gaskets 34, stiffened by welding points 35 or tightened by screws 36, being provided with two profiled inner gaskets 37 that make the first sealing stage, the second stage being made by the inflatable gaskets 34;

The modular chamber has a gas mixing, monitoring and control system, the diagram of which is shown in figure 15, consisting of the modular hyperbaric chamber 1 , the unit 53 for measuring pressure and gas concentrations, the mixing vessel 54, the unit 55 for analyzing the mixture of gases, connection and communication paths 56, tanks 57 for different gases that are part of the mixture, the tanks being connected to the mixing chamber 54 through communication paths 58 through valves 59 all connected to the PLC unit 60 connected to the hyperbaric chamber through communication channels 61. Modular construction allows the combination of any constructive elements, using the joining and sealing elements specific to each type. Thus, in another constructive variant in which modules of large diameters are assembled, the assembly and sealing of the modules is carried out by joining and sealing systems of the type shown in fig. 11 or in fig. 12. In the variant of assembling equal modules, the assembly shown in fig. 11 is used, the connection between the modules being realized by means of the connecting flange 38, having channels for the insertion of the inflatable gaskets 39, the flanges being tightly stiffened on the body of the modules by some screws inserted in the holes 40. In this construction version, the primary sealing is done by the profile gasket 41 located between the flange and the modules, making the first sealing stage, and the second sealing stage is done with the help of the inflatable gaskets 39.

In another constructive variant in which the assembled modules are large and have unequal diameters, the connection between the modules is made by means of a system represented in fig. 12 the connection between the modules being made through the connection flanges 38, provided with profiled channels for the insertion of the inflatable gaskets 39, holes 40 being drilled in the flange for the insertion of assembly tightening screws, a differently profiled gasket 42 being placed between the flange 38 and the modules, thinner towards the module with the larger diameter and thicker towards the module with the smaller diameter, compensating the level difference between the modules.

The commissioning and assembly operations of the hyperbaric chamber involve unpacking the body of cylinder 1 in which all the components required for assembly are found, extracting all the components inside cylinder 1 , mounting the sealing gaskets on cylinder 1 and cylinder 4, inserting cylinder 4 in cylinder 1 , center it with the fixing screws and inflate the inflatable gasket to an indicated pressure, assemble the side covers 2 and 3 by mounting the clamp 13 and the hinge of the cover 3 and mount the inflatable gaskets on the covers. Insert the curved door 5 with the mechanisms of the circular running path 14 and attach the camera connections by means of grommets 8, mount the connection cables 61 to the PLC computer 10, fasten the covers 2 and 3 to the modules of the already assembled body, center them with the screws fixing and the inflatable seal is inflated to an indicated pressure that ensures the fixing of the covers on the body of the hyperbaric chamber and the pressure and the sealing system are tested.

Claims

CLAIMS:

1. The hyperbaric chamber built from cylindrical modules and fixed or mobile side covers, supporting supports with moving rollers, characterized by the fact that, it is assembled from the main modular cylinders (1) and secondary (4) fixed (2) or mobile (3) covers which can be assembled in various configurations, in which at least one module (4) is provided with a cutout (9) that represents the access window through the curved door (5), the curved door being made of transparent materials, the room having a door lifting and closing system, consisting of sliding rollers (43) mounted on the curved door, running on a circular track (14) made of profiles placed circularly on both sides of the window (9), on the curved door (5) being placed some lifting rollers (46) that lift the door on some lifting slats (47) and on some slats (50) for changing the direction of movement of the door, the curved door (5) being also provided with some rollers vertical centering (44), and the hiperbaric camera being provided with some blades (47) and (50) for lifting and pressing the door on the sealing assembly of the window (9), on the curved door (5) being mounted a rubber grip handle for opening from the inside (48), a double handle turned outwards with the lever necessary to raise the window (49), on the floor of the chamber there is a track (11) made of profiles on which the trolley (12) runs or a mobile stretcher, the hyperbaric chamber being enclosure, at extremities with side covers fixed (2) or mobile (3)

2. Hyperbaric chamber, according to claim 1 , characterized by the fact that, the secondary modules (4) have smaller diameters than the main modules (1 ), allowing the introduction of the secondary modules (4) inside the main modules (1 ), reducing the packing dimensions in view storage or transport;

3. Hyperbaric chamber, according to claims 1 and 2, characterized by the fact that, on the curved door (5) and on the edge of the access window (9), an asymmetric gasket system is provided, composed of a profiled gasket (29) for pressing and making of the first stage of sealing the door, placed on the edge of the window (9) and the inflatable seal (32) for the realization of the second stage of sealing, placed in the semicircular channel practiced on the edge of the window O);

4. Hyperbaric chamber, according to the previous claims, characterized by the fact that, on the fixed side cover (2) and on the module (1), are provided some flanges (15) for joining and sealing, attached by means of welding cords (16), the flanges having some circular channels (17) and some rectangular channels (18) practiced symmetrically, in the circular channel (17) being placed some inflatable gaskets (19) and in the rectangular channel (18) being placed some profiled gaskets (20), the flanges having practiced some holes (21 ) into which are inserted some tightening screws (22);

5. Hyperbaric chamber according to claims 1 , 2, 3 and 4, characterized by the fact that, on the mobile side cover (3) and on the end of the module (4), are placed some profiled flanges (23) and (24), the flange (23) being placed on the end of the module (4), the flange (24) being placed on the movable cover (3), both flanges being stiffened by means of welding beads (25), the flange (23) presenting some centering elements by means of a screw (26), both flanges having channels in which the sealing system consisting of asymmetric gaskets is provided, respectively, the cylindrical gasket (27) for performing the first sealing stage and the inflatable gasket (28) for performing the second sealing stage and blocking the closure;

6. Hyperbaric chamber, according to claims 1 ,2, 3, 4 and 5, characterized by the fact that, the positioning of the access door (5) for manual operation is continued with the movement under the influence of the gravitational force given by its own weight, on the closing end, making the door press on the gasket profiled (29) and on the opening end keeping the door (5) in the open position.

7. Hyperbaric chamber, according to the previous claims, characterized by the fact that, it is made up of modules with small but equal diameters assembled by means of connecting flanges (33) attached to the modules by welding points (35), the flanges having channels in which some inflatable gaskets (34) are positioned, the assembly having some screws (36) for tightening the flanges on the modules, being also provided with some profiled internal gaskets (37) for sealing;

8. Hyperbaric chamber, according to the previous claims, characterized by the fact that, it is made up of modules with large but equal diameters, assembled by means of some profiled flanges (38), provided with some profiled channels for the introduction of some inflatable gaskets (39) in the flange having drilled some holes (40) for screws, the joining system having some profiled gaskets (41 ) located between the flange (38) and the module;

9. Hyperbaric chamber, according to the previous claims, characterized by the fact that, it is made up of large modules with unequal diameters, assembled by some profiled flanges (38), provided with some profiled channels for the introduction of some inflatable gaskets (39), in the flanges being practiced some holes (40) for the insertion of some tightening screws, between the flange (38) and the modules there are gaskets (42) differently profiled, thinner towards the module with a larger diameter and thicker towards the module with a smaller diameter, for compensation of the level difference between the modules;

10. Hyperbaric chamber, according to the previous claims, characterized by the fact that, it is equipped with a pressure and gas mixture control and monitoring system, composed of some tanks of different gases (57), some valves (59), some vessels of storage and mixing (54) controlled by means of measurement and control units (60) and some connecting elements (56), (58), (61 ).

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