Pressure regulating mechanism for oxygen therapy chamber

Abstract

The utility model provides a kind of pressure regulating mechanism of oxygen treatment cabin, belong to oxygen treatment cabin technical field, the pressure regulating mechanism of this oxygen treatment cabin, comprising: treatment cabin body, sealing cover, pressure regulating device, support base, observation window subassembly and safety valve subassembly;Elliptic cylinder treatment cabin one end is provided with hatch, rubber ring seals hemispherical sealing cover, cover center thread fixed pressure regulating valve body, top pressure regulating hand wheel is driven inside mechanism through pivot, valve body side air inlet is screwed with connecting pipeline;Cabin bottom is fixed on rectangular base with support bolt;Side wall observation hole is installed sealing frame through flange, transparent window piece is embedded by adhesive tape;Top thread installs safety valve subassembly;The utility model can solve the technical problems of unstable pressure-bearing performance and low pressure regulating precision in the interior of oxygen treatment cabin in prior art.

Description

Technical Field

[0001] This utility model belongs to the field of oxygen therapy chamber technology, and more specifically, relates to a pressure regulating mechanism for an oxygen therapy chamber. Background Technology

[0002] Oxygen therapy, as an important medical treatment, is widely used in various fields such as altitude sickness, diving decompression, sports recovery, and beauty and health care. Traditional oxygen therapy equipment mainly includes simple devices such as oxygen masks and nasal cannulas, but these devices cannot provide a stable hyperbaric oxygen environment, resulting in limited therapeutic effects. With the development of medical technology, hyperbaric oxygen therapy chambers have gradually become important equipment for oxygen therapy. Existing hyperbaric oxygen therapy chambers mostly adopt cylindrical or spherical structures. Although they can provide a certain hyperbaric oxygen environment, they still have many shortcomings in terms of pressure regulation accuracy, structural strength, and safety. Current pressure regulation devices mostly use simple valve control methods, resulting in low regulation accuracy and difficulty in achieving precise control of the chamber pressure, which directly affects the therapeutic effect and safety. Traditional cylindrical chambers are prone to stress concentration in the cylinder under high pressure, leading to structural deformation or even damage. While spherical chambers have better pressure resistance, their internal space utilization is low, making it inconvenient for patient comfort. The sealing systems of existing equipment mostly use simple rubber gaskets, which have poor sealing reliability and are prone to leakage, posing safety hazards. The poorly designed heat dissipation system leads to a significant increase in chamber temperature after prolonged use, affecting treatment comfort and the equipment's lifespan. The observation window design also suffers from insufficient strength and poor sealing, failing to meet practical usage requirements. These technical issues severely restrict the development and widespread application of oxygen therapy chamber technology, urgently necessitating the development of a new oxygen therapy chamber structure that is structurally sound, high-performing, and safe. Utility Model Content

[0003] In view of this, the present invention provides a pressure regulating mechanism for an oxygen therapy chamber, which can solve the technical problems of low pressure regulation accuracy and unstable pressure bearing performance of the chamber in the prior art.

[0004] This utility model is implemented as follows: This utility model provides a pressure regulating mechanism for an oxygen therapy chamber, comprising: a therapy chamber body, a sealing cover, a pressure regulating device, a support base, an observation window assembly, and a safety valve assembly; the therapy chamber body has an elliptical cylindrical structure, with a hatch at one end, and a sealing cover is sealed to the hatch by a rubber sealing ring; the sealing cover has a hemispherical structure, and a pressure regulating device is fixedly installed at the geometric center of the sealing cover; the pressure regulating device includes a pressure regulating valve body, a pressure regulating handwheel, and a connecting pipeline, the pressure regulating valve body is fixed to the sealing cover by a threaded connection, and the pressure regulating handwheel is installed on the top of the pressure regulating valve body and connected to the pressure regulating valve body via a rotating shaft. The pressure regulating mechanism inside the pressure valve body is driven and connected, with one end of the connecting pipeline threadedly connected to the side air inlet of the pressure regulating valve body; the bottom of the treatment chamber is fixedly connected to the support base by multiple support bolts, and the support base has a rectangular frame structure; an observation hole is opened on the side wall of the treatment chamber, and an observation window assembly is installed at the observation hole. The observation window assembly includes a transparent window and a sealing frame. The transparent window is embedded in the sealing frame by a sealing strip, and the sealing frame is fixed to the observation hole by a flange connection; a safety valve assembly is also provided on the top of the treatment chamber, and the safety valve assembly is installed on the safety valve interface on the top of the treatment chamber by a threaded connection.

[0005] The technical effects of the pressure regulating mechanism for an oxygen therapy chamber provided by this utility model are as follows: The combination design of an elliptical cylindrical treatment chamber and a hemispherical sealing cover creates a treatment space with strong pressure resistance and excellent sealing performance. The elliptical cylindrical structure effectively disperses internal pressure and reduces stress concentration, while the hemispherical sealing cover has good mechanical properties, capable of withstanding high internal pressure without deformation. The pressure regulating device achieves precise control of the chamber pressure through the rotation of the pressure regulating handwheel. The connecting pipeline ensures stable oxygen input. The inclusion of the observation window assembly and safety valve assembly improves the safety and operability of the equipment. The overall structural design is reasonable, and the connections between components are reliable.

[0006] Based on the above technical solution, the pressure regulating mechanism of the oxygen therapy chamber of this utility model can be further improved as follows: The support base includes a front support beam, a rear support beam, and left and right side support beams. The front and rear support beams are arranged in parallel, and the left and right side support beams connect the two ends of the front and rear support beams to form a rectangular frame. A front support column extends upward from the middle of the front support beam, and a rear support column extends upward from the middle of the rear support beam. The tops of the front and rear support columns are tightly connected to the bottom circumference of the treatment chamber by U-shaped clamps.

[0007] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the rectangular frame structure of the support base provides a stable support foundation for the treatment chamber; the parallel arrangement of the front and rear support beams ensures the uniform distribution of support force; the connection of the left and right support beams forms a rigid frame structure, which effectively resists the action of various external forces; the setting of the front and rear support columns directly transmits the support force to the bottom of the treatment chamber; the use of U-shaped clamps achieves reliable fixation of the circular chamber, avoiding displacement or shaking of the treatment chamber during use; the entire support system has a simple structure and strong load-bearing capacity, and is easy to install and maintain.

[0008] Furthermore, the inner wall of the treatment chamber is provided with an arc-shaped ridge structure; the arc-shaped ridge structure includes multiple arc-shaped ridges extending along the axial direction of the treatment chamber, each arc-shaped ridge has a semi-circular cross-section, the arc-shaped ridges are evenly distributed in the circumferential direction of the inner wall of the treatment chamber, and an arc-shaped groove is formed between two adjacent arc-shaped ridges; the height of the arc-shaped ridge is 5 mm to 15 mm, and the width of the arc-shaped ridge is 8 mm to 20 mm.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the setting of the arc-shaped ridge structure enhances the rigidity of the inner wall of the treatment chamber and improves the pressure deformation resistance of the chamber. The arc-shaped ridge with a semi-circular cross-section can effectively disperse the internal pressure and reduce local stress concentration. The equally spaced distribution design ensures the uniformity of pressure distribution. The formation of the arc-shaped groove provides a channel for the flow of gas in the chamber, which is conducive to the uniform distribution of oxygen. The reasonable design of the height and width of the ridge ensures the structural strength without occupying too much space in the chamber. The overall structure optimizes the pressure bearing performance and gas flow characteristics of the treatment chamber.

[0010] Furthermore, the inner surface of the sealing cover is provided with an annular sealing groove; the annular sealing groove is 10 mm to 30 mm away from the edge of the sealing cover, the width of the annular sealing groove is 6 mm to 12 mm, and the depth is 3 mm to 8 mm; an O-ring is installed in the annular sealing groove, and the O-ring is made of silicone rubber; the sealing cover is connected to the hatch flange of the treatment chamber by a plurality of evenly distributed locking bolts, the number of which is 8 to 12.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the setting of the annular sealing groove provides an accurate installation position for the O-ring, ensuring the stability of the sealing ring under pressure; the reasonable design of the distance between the sealing groove and the edge avoids the influence of edge stress on the sealing effect; the precise control of the groove width and depth ensures the correct compression of the sealing ring; the silicone rubber O-ring has good elasticity and aging resistance, and can maintain a stable sealing effect under different pressure conditions; the even distribution of multiple locking bolts ensures uniform compression between the sealing cover and the hatch flange; the entire sealing system has high reliability and can maintain a good sealing state for a long time.

[0012] Furthermore, the transparent window of the observation window assembly is made of tempered glass with a thickness of 20 mm to 40 mm; the sealing frame is made of stainless steel, with its outer diameter matching the inner diameter of the observation hole, and its inner diameter being 2 mm to 5 mm smaller than the diameter of the transparent window; the sealing strip is made of fluororubber, and has a ring-shaped structure that fits tightly against the periphery of the transparent window.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the tempered glass transparent window has high strength and good transparency; its thickness design can withstand the high-pressure environment inside the chamber while ensuring good observation effect; the stainless steel sealing frame has excellent corrosion resistance and mechanical strength; the matching design of the outer diameter and the observation hole ensures the accuracy of installation; the inner diameter design provides a suitable support boundary for the transparent window; the fluororubber sealing strip has excellent high temperature resistance and chemical corrosion resistance; the annular structure ensures the continuity of the seal; the entire observation window assembly not only meets the observation needs but also ensures the sealing safety, providing a reliable guarantee for monitoring the treatment process.

[0014] Furthermore, the pressure regulating valve body is internally equipped with a valve core and a spring assembly; the valve core has a cylindrical structure, one end of which is connected to the rotating shaft of the pressure regulating handwheel via a thread, and the other end of which is provided with a sealing cone surface; the spring assembly includes a compression spring and a spring seat, one end of which abuts against the spring seat, and the other end abuts against the annular boss in the middle of the valve core; when the pressure regulating handwheel is rotated clockwise, the valve core moves downward to compress the spring, increasing the sealing degree between the sealing cone surface and the valve seat, thereby reducing the gas flow rate through the pressure regulating valve body.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the internal structural design of the valve core and spring assembly realizes precise control of pressure regulation; the cylindrical valve core structure is simple and reliable; the threaded connection with the pressure regulating handwheel ensures accurate transmission of rotary motion to linear motion; the design of the sealing conical surface improves the reliability of the valve seat seal; the compression spring provides elastic force for valve core reset; the setting of the spring seat ensures stable operation of the spring; the clockwise rotation operation of the pressure regulating handwheel is intuitive and simple; the gas flow rate is continuously regulated by changing the position of the valve core, thereby precisely controlling the pressure inside the chamber; the entire pressure regulating mechanism is responsive, easy to operate, and has high adjustment accuracy.

[0016] Furthermore, the outer surface of the treatment chamber is provided with multiple heat dissipation ridges.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the setting of heat dissipation ridges significantly increases the heat dissipation surface area of ​​the treatment chamber, improves the heat exchange efficiency, effectively prevents the temperature rise of the chamber due to long-term use, the ridge structure also strengthens the rigidity of the outer wall of the chamber, improves the overall structural strength of the chamber, the distribution of multiple heat dissipation ridges forms a good heat convection channel, promotes natural air convection heat dissipation, this passive heat dissipation method does not require additional energy consumption, has low operating costs, and at the same time the presence of heat dissipation ridges also provides better impact resistance to the surface of the chamber, thus improving the overall reliability and service life of the equipment.

[0018] Furthermore, the heat dissipation ridge has a triangular cross-sectional structure.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the heat dissipation ridge with a triangular cross-section has a larger surface area to volume ratio, and its heat dissipation efficiency is higher than that of ridges with other shapes. The triangular structure has good stability when subjected to external forces and is not easy to deform or break. This geometry also has good hydrodynamic characteristics, which can guide air to flow along the surface of the ridge and form effective convective heat transfer. The design of the triangular slender corners is conducive to the rapid conduction and dissipation of heat. At the same time, the manufacturing process of this shape of ridge is relatively simple, which facilitates mass production and has good cost control. Overall, it optimizes the heat dissipation performance and structural strength.

[0020] Furthermore, the treatment chamber is made of aluminum alloy.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: aluminum alloy material has excellent thermal conductivity, which is conducive to the transfer and dissipation of heat inside and outside the chamber; its density is relatively low, which can effectively reduce the weight of the entire treatment chamber, making it easier to transport and install; aluminum alloy has good corrosion resistance, especially showing stability in oxygen environment and will not undergo oxidation corrosion; its mechanical strength can meet the requirements of pressure vessels; it also has good machinability, which is convenient for processing and manufacturing various complex shapes; aluminum alloy also has good welding performance, which is conducive to reliable connection between various components; the material cost is relatively low, and the economy is good, thus improving the overall performance and economic benefits of the treatment chamber.

[0022] Furthermore, the number of heat dissipation ridges is 20 to 30, and the plurality of heat dissipation ridges are equidistantly distributed along the axial direction on the outer surface of the treatment chamber.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the design of 20 to 30 heat dissipation ridges has been optimized and calculated, which not only ensures sufficient heat dissipation area, but also avoids the structural complexity and cost increase caused by too many ridges. The axial equidistant distribution ensures the uniformity of heat dissipation effect and avoids the occurrence of local overheating. This distribution method is also conducive to the uniform improvement of the overall structural strength of the cabin. Each heat dissipation ridge bears an equal load and there will be no stress concentration. The equidistant distribution design also facilitates the standardization of manufacturing process, improves production efficiency and product quality consistency. The entire heat dissipation system is reasonably designed, has stable performance, and is easy to maintain.

[0024] Compared with existing technologies, the beneficial effects of the pressure regulating mechanism for an oxygen therapy chamber provided by this utility model are as follows: This utility model achieves a significant improvement in pressure-bearing performance through an optimized combination of an elliptical cylindrical treatment chamber body and a hemispherical sealing cover. The elliptical cylindrical structure effectively disperses internal pressure loads, avoiding the local deformation problems that easily occur in cylindrical structures under high pressure. The hemispherical sealing cover has excellent compressive strength, capable of withstanding higher working pressures while maintaining structural stability. The pressure regulating device adopts a precision valve core spring mechanism, achieving continuous and precise adjustment of the chamber pressure through the rotation of the pressure regulating handwheel. The adjustment accuracy is an order of magnitude higher than traditional valve control methods, meeting the pressure requirements of different treatment needs. The inner wall design of the arc-shaped convex ridge structure not only enhances the rigidity of the chamber body but also optimizes the flow distribution of gas within the chamber, ensuring that oxygen can uniformly reach all positions within the chamber, improving the treatment effect. The observation window assembly adopts a combination design of tempered glass and a sealing frame, ensuring both good observation effects and reliable sealing, providing a guarantee for safe monitoring of the treatment process. The heat dissipation ridge design effectively solves the temperature control problem during long-term use, and the optimized triangular cross-section design significantly improves heat dissipation efficiency, ensuring the stability of the internal temperature. The entire structure is made of aluminum alloy, which greatly reduces the weight of the equipment while ensuring strength, improving its portability and economy. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a pressure regulation mechanism for an oxygen therapy chamber; Figure 2 A cross-sectional view of a pressure regulating mechanism in an oxygen therapy chamber; Figure 3 A schematic diagram of a pressure sealing cover for a pressure regulating mechanism in an oxygen therapy chamber; The attached diagram lists the components represented by each number as follows: 1. Treatment chamber; 2. Sealed cover; 3. Pressure regulating device; 31. Pressure regulating valve body; 32. Pressure regulating handwheel; 33. Connecting pipeline; 4. Support base; 5. Safety valve assembly. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1 The diagram shows a first embodiment of a pressure regulating mechanism for an oxygen therapy chamber provided by this utility model. In this embodiment, it includes: a therapy chamber body 1, a sealing cover 2, a pressure regulating device 3, a support base 4, an observation window assembly, and a safety valve assembly 5. The therapy chamber body 1 has an elliptical cylindrical structure, with a hatch at one end. The hatch is sealed to the sealing cover 2 by a rubber sealing ring. The sealing cover 2 has a hemispherical structure, and the pressure regulating device 3 is fixedly installed at its geometric center. The pressure regulating device 3 includes a pressure regulating valve body 31, a pressure regulating handwheel 32, and a connecting pipe 33. The pressure regulating valve body 31 is fixed to the sealing cover 2 by a threaded connection, and the pressure regulating handwheel 32 is installed on the pressure regulating valve body 31. The top of the body 31 is connected to the pressure regulating mechanism inside the pressure regulating valve body 31 via a rotating shaft. One end of the connecting pipe 33 is threadedly connected to the side air inlet of the pressure regulating valve body 31. The bottom of the treatment chamber 1 is fixedly connected to the support base 4 by multiple support bolts. The support base 4 has a rectangular frame structure. An observation hole is provided on the side wall of the treatment chamber 1. An observation window assembly is installed at the observation hole. The observation window assembly includes a transparent window and a sealing frame. The transparent window is embedded in the sealing frame by a sealing strip. The sealing frame is fixed to the observation hole by a flange connection. A safety valve assembly 5 is also provided on the top of the treatment chamber 1. The safety valve assembly 5 is installed on the safety valve interface on the top of the treatment chamber 1 by a threaded connection.

[0029] In the above technical solution, the support base 4 includes a front support beam, a rear support beam, and left and right side support beams; the front support beam and the rear support beam are arranged in parallel, and the left and right side support beams are respectively connected to the two ends of the front support beam and the rear support beam to form a rectangular frame; a front support column is provided extending upward from the middle of the front support beam, and a rear support column is provided extending upward from the middle of the rear support beam; the tops of the front support column and the rear support column are respectively tightly connected to the bottom circumferential surface of the treatment chamber 1 by U-shaped clamps.

[0030] Furthermore, in the above technical solution, the inner wall of the treatment chamber 1 is provided with an arc-shaped ridge structure; the arc-shaped ridge structure includes multiple arc-shaped ridges extending along the axial direction of the treatment chamber 1, each arc-shaped ridge has a semi-circular cross-section, the arc-shaped ridges are evenly distributed in the circumferential direction of the inner wall of the treatment chamber 1, and an arc-shaped groove is formed between two adjacent arc-shaped ridges; the height of the arc-shaped ridge is 5 mm to 15 mm, and the width of the arc-shaped ridge is 8 mm to 20 mm.

[0031] Furthermore, in the above technical solution, an annular sealing groove is provided on the inner surface of the sealing cover 2; the annular sealing groove is 10 mm to 30 mm away from the edge of the sealing cover 2, the width of the annular sealing groove is 6 mm to 12 mm, and the depth is 3 mm to 8 mm; an O-ring is installed in the annular sealing groove, and the O-ring is made of silicone rubber; the sealing cover 2 is connected to the hatch flange of the treatment chamber 1 by a plurality of evenly distributed locking bolts, the number of which is 8 to 12.

[0032] Furthermore, in the above technical solution, the transparent window of the observation window assembly is made of tempered glass, and the thickness of the transparent window is 20 mm to 40 mm; the sealing frame is made of stainless steel, and the outer diameter of the sealing frame matches the inner diameter of the observation hole, while the inner diameter of the sealing frame is 2 mm to 5 mm smaller than the diameter of the transparent window; the sealing strip is made of fluororubber, and the sealing strip has a ring structure and is tightly attached to the periphery of the transparent window.

[0033] Furthermore, in the above technical solution, the pressure regulating valve body 31 is internally provided with a valve core and a spring assembly; the valve core has a cylindrical structure, one end of the valve core is connected to the rotating shaft of the pressure regulating handwheel 32 by a thread, and the other end of the valve core is provided with a sealing cone surface; the spring assembly includes a compression spring and a spring seat, one end of the compression spring abuts against the spring seat, and the other end abuts against the annular boss in the middle of the valve core; when the pressure regulating handwheel 32 rotates clockwise, the valve core moves downward to compress the spring, the sealing degree between the sealing cone surface and the valve seat increases, thereby reducing the gas flow rate through the pressure regulating valve body 31.

[0034] Furthermore, in the above technical solution, the outer surface of the treatment chamber 1 is provided with multiple heat dissipation ridges.

[0035] Furthermore, in the above technical solution, the heat dissipation ridge has a triangular cross-sectional structure.

[0036] Furthermore, in the above technical solution, the treatment chamber 1 is made of aluminum alloy material.

[0037] Furthermore, in the above technical solution, the number of heat dissipation ridges is 20 to 30, and multiple heat dissipation ridges are equidistantly distributed along the axial direction on the outer surface of the treatment chamber 1.

[0038] The following is a specific embodiment 1 of this utility model: The adjustable pressure oxygen therapy chamber structure of this embodiment is made of high-strength aluminum alloy 6061. The chamber body is 2200 mm long, with a major axis of 800 mm, a minor axis of 600 mm, and a wall thickness of 12 mm in an elliptical cross-section. This size design provides ample treatment space for adult patients while ensuring good pressure resistance. The inner wall of the chamber is machined with 24 arc-shaped ridges, each ridge being 10 mm high and 15 mm wide. The ridges extend axially and are distributed every 15 degrees in the circumferential direction. The ridges are CNC milled to achieve a surface finish of Ra1.6. The grooves between the ridges are 20 mm wide and 10 mm deep. This design improves structural strength while creating favorable conditions for gas flow within the chamber. The sealing cover features a hemispherical design with a radius of 400 mm and a wall thickness of 15 mm. It is made of 6061 aluminum alloy. An annular sealing groove, 8 mm wide and 5 mm deep, is machined 20 mm from the edge on the inner surface of the cover. An imported silicone rubber O-ring, measuring 8×2 mm, with a Shore A hardness of 70, provides excellent elasticity and aging resistance. The sealing cover is connected to the hatch flange by ten M12 stainless steel locking bolts. These bolts are made of 316L stainless steel with a passivated surface for excellent corrosion resistance. They are evenly distributed around a 700 mm diameter circumference, with a tightening torque of 80 Nm, ensuring a reliable seal between the sealing cover and the hatch. The pressure regulating device is installed at the geometric center of the sealing cover. The pressure regulating valve body is made of brass, with an outer diameter of 50 mm and a height of 80 mm. It features a precision-machined valve seat and guide hole with a surface finish of Ra0.8. The valve core is made of stainless steel, with a diameter of 20 mm and a length of 60 mm. One end of the valve core is machined with a 60-degree conical sealing surface with a surface roughness of Ra0.4. The other end connects to the pressure regulating handwheel via an M8 thread. The pressure regulating handwheel has a diameter of 100 mm and a surface with anti-slip texture for easy gripping and rotation. The spring assembly uses a high-quality compression spring with a wire diameter of 2 mm, an outer diameter of 18 mm, a free length of 30 mm, a spring constant of 15 N / mm, and is made of 60Si2MnA spring steel with a bluing finish, providing excellent corrosion resistance and fatigue strength. The connecting pipeline uses stainless steel flexible tubing with an inner diameter of 10 mm, an outer diameter of 16 mm, and a length of 1500 mm. Both ends of the pipeline are equipped with standard G1 / 4 threaded connectors for easy connection to the oxygen source and pressure regulating valve. The support base uses a welded angle steel structure, with front and rear support beams measuring 2500 mm in length and left and right side support beams measuring 1200 mm in length. The angle steel specifications are 50×50×5 mm, made of Q235A carbon steel, and the surface is hot-dip galvanized with a zinc coating thickness of 75 microns, providing excellent corrosion resistance.The fore and aft support columns are 300 mm high, made of seamless steel pipe with an outer diameter of 89 mm and a wall thickness of 4 mm. A U-shaped clamp is welded to the top of each support column; the clamp has an inner diameter of 800 mm, a width of 80 mm, and a thickness of 8 mm. A rubber gasket is attached to the inside of the clamp to prevent damage to the cabin surface. The observation window assembly is installed on the side wall of the cabin, 600 mm from the bottom. The observation hole has a diameter of 300 mm, and the transparent window pane is made of tempered glass with a diameter of 280 mm and a thickness of 30 mm. The glass surface is polished, achieving a light transmittance of over 92%. The sealing frame is made of 316L stainless steel with an outer diameter of 320 mm, an inner diameter of 275 mm, and a thickness of 20 mm. The frame is connected to the observation hole with 16 M8 bolts. The sealing strip is made of fluororubber with a hardness of 80 Shore A, has a ring-shaped structure, a rectangular cross-section, and dimensions of 5 × 3 mm. The safety valve assembly is installed on the top of the chamber. The safety valve is a spring-loaded type with an opening pressure of 0.25 MPa. The valve body is made of brass, and the valve core is made of stainless steel. The safety valve is connected to the safety valve port on the top of the chamber via a G1 / 2 thread, located 800 mm from the front of the chamber. The outer surface of the treatment chamber has 25 evenly distributed heat-dissipating ridges along the axial direction. Each ridge is 2000 mm long, 12 mm high, and 16 mm wide at the base, with an isosceles triangular cross-section. The ridges are manufactured using an extrusion molding process and are integrally formed with the chamber body. The surface is anodized, with an oxide film thickness of 15 micrometers, providing good corrosion resistance and heat dissipation. The entire treatment chamber operates at a pressure range of 0.1 to 0.3 MPa, with a maximum test pressure of 0.45 MPa. The effective internal volume is 0.85 cubic meters, and the total weight of the equipment is 280 kg. It employs a modular design for easy transportation and installation. In actual use, after the patient enters the chamber, the operator gradually increases the pressure inside the chamber to the treatment pressure using the pressure regulating handwheel, usually between 0.2 and 0.25 MPa. The treatment time is determined according to the patient's condition, generally between 60 and 120 minutes. During the treatment, the temperature inside the chamber is controlled between 22 and 26 degrees Celsius, and the relative humidity is controlled below 60%. The patient's condition can be clearly observed through the observation window to ensure treatment safety. The arc-shaped convex ridge structure effectively promotes the convection circulation of gas inside the chamber, ensuring a uniform distribution of oxygen concentration. The heat dissipation convex ridge design ensures that the temperature rise of the chamber does not exceed 5 degrees Celsius after long-term use, guaranteeing the comfort of treatment and the stable operation of the equipment.

[0039] The following is another specific embodiment 2 of this utility model: This embodiment 2 is based on embodiment 1, and the pressure regulating device has been improved and optimized. A pressure indicating device and a precision adjusting mechanism are added to the pressure regulating valve body. The pressure indicating device includes a mechanical pressure gauge and a pressure gauge interface. The pressure gauge has a range of 0 to 0.4 MPa, an accuracy class of 1.5, and a dial diameter of 100 mm. The pressure gauge is installed on the side of the pressure regulating valve body through an M14×1.5 threaded interface. The interface position is connected to the inner cavity of the pressure regulating valve body, and it can display the accurate pressure value in the chamber in real time. The precision adjustment mechanism adds a fine-tuning device to the original pressure regulating handwheel. This device includes a fine-tuning screw and a fine-tuning handwheel. The fine-tuning screw is 6 mm in diameter with a 0.5 mm pitch, made of stainless steel, and precision-ground to a surface roughness of Ra0.2. The fine-tuning handwheel is 60 mm in diameter and connected to the fine-tuning screw via a reduction gear with a reduction ratio of 10:1. This design allows operators to perform more precise fine-tuning control of the chamber pressure, achieving a pressure regulation accuracy of 0.001 MPa. Simultaneously, a temperature monitoring device is added to the sealing cover, including a bimetallic thermometer and a thermometer sleeve. The thermometer has a range of 0 to 100 degrees Celsius and an accuracy of ±1 degree Celsius. The sleeve is made of stainless steel, 150 mm long, and 12 mm in diameter, and is threaded onto the sealing cover, enabling accurate monitoring of temperature changes within the chamber. To further enhance safety, an emergency pressure relief device has been added to the treatment chamber, including an emergency pressure relief valve and a manual operating handle. The emergency pressure relief valve is a quick-opening ball valve with a diameter of 25 mm, and the manual operating handle is 200 mm long. In emergencies, operators can quickly open the pressure relief valve to rapidly reduce the pressure inside the chamber and ensure patient safety. These improvements significantly enhance the equipment's operational accuracy, monitoring capabilities, and safety performance, making it more suitable for use in specialized medical facilities with high requirements for pressure control precision.

[0040] The following is another specific embodiment 3 of this utility model: This embodiment 3 is based on embodiment 1, and the structure of the treatment chamber is further optimized. The elliptical cylindrical chamber is improved into a variable cross-section elliptical cylindrical structure. The front section of the chamber adopts a smaller elliptical cross-section with a major axis of 700 mm, a minor axis of 500 mm, and a length of 800 mm. The middle section adopts a standard elliptical cross-section with a major axis of 800 mm, a minor axis of 600 mm, and a length of 600 mm. The rear section adopts a larger elliptical cross-section with a major axis of 900 mm, a minor axis of 700 mm, and a length of 800 mm. The three sections are connected by a smooth transition surface. This variable cross-section design is more in line with ergonomic principles, providing patients with a more comfortable treatment space, with sufficient space for head and foot movement, and ample expansion space in the chest and abdominal areas. An adjustable patient support platform was added inside the cabin. The platform features an aluminum alloy frame structure and a medical-grade stainless steel mesh surface with 10×10 mm openings. The platform is 1800 mm long and 600 mm wide, with a height adjustable from 200 to 400 mm. The adjustment mechanism is driven by a hydraulic cylinder with a 200 mm stroke and a working pressure of 10 MPa. The platform height is controlled by a manual hydraulic pump. Auxiliary handrails were also added to both sides of the cabin. These handrails are made of stainless steel tubing with a diameter of 32 mm and a wall thickness of 3 mm, covered with a medical-grade silicone sleeve. Each handrail is 400 mm long and is mounted on the cabin wall via adjustable brackets. The brackets can be adjusted circumferentially to accommodate patients of different heights. To improve the lighting inside the chamber, an LED lighting system was added to the top of the chamber, consisting of six LEDs, each with a power of 3 watts and a color temperature of 4000K. These LEDs are protected by a transparent polycarbonate lampshade. The lighting system uses 12-volt DC power, which is introduced into the chamber via a sealed cable. The switch control device is installed outside the chamber, allowing operators to adjust the brightness of the lighting as needed. These improvements make the treatment chamber more suitable for prolonged treatment, significantly improving patient comfort, while also further enhancing operational convenience and safety.

[0041] Specifically, the principle of this invention is as follows: This invention adopts an elliptical cylindrical treatment chamber structure. Based on the stress distribution characteristics of an elliptical cross-section under internal pressure, the elliptical structure can more evenly distribute the internal pressure load across the entire chamber wall, avoiding the stress concentration phenomenon in the cylindrical part of the chamber when under internal pressure, thus significantly improving the pressure-bearing capacity and structural stability of the chamber. The design of the hemispherical sealing cover is based on the mechanical principle that a spherical structure has the optimal stress distribution under internal pressure. The stress at each point on the spherical surface is equal, and there is no stress concentration phenomenon, so it can withstand higher internal pressure without deformation or damage. The pressure regulating device adopts a precision valve core spring regulating mechanism. Based on the elastic deformation characteristics of the spring and the geometric sealing principle of the valve core, the position of the valve core in the valve seat is changed by rotating the pressure regulating handwheel, thereby continuously adjusting the ventilation cross-sectional area and achieving precise control of gas flow and internal pressure. This mechanical regulation method has a fast response speed, high regulation accuracy, and good reliability. The design of the arc-shaped ridge structure is based on the stiffening theory in structural mechanics. The ridges act as reinforcing ribs on the inner wall of the cabin, significantly improving the bending stiffness and stability of the cabin wall. Simultaneously, the grooves formed between the ridges provide channels for gas flow. Based on fluid dynamics principles, this structure facilitates the convective mixing of gases within the cabin, ensuring a uniform distribution of oxygen concentration. The design of the observation window assembly is based on the principles of materials mechanics and sealing technology. Tempered glass possesses high strength and good transparency, capable of withstanding high-pressure environments. The combined design of the sealing frame and sealing strips ensures multiple layers of sealing protection. The design of the heat dissipation ridges is based on the principles of heat transfer. By increasing the heat dissipation surface area and optimizing convective heat transfer conditions, it significantly improves heat dissipation efficiency. The triangular cross-section design is based on geometric and fluid dynamics principles, possessing an optimal surface area to volume ratio and fluid dynamic characteristics.

[0042] The specific operation or use method of this utility model is as follows: Before use, first check the integrity and sealing of all components such as the treatment chamber, sealing cover, and observation window assembly to confirm that there is no damage or aging. Check the stability of the support base to ensure that the treatment chamber is firmly installed. Then connect the oxygen source to the connecting pipeline of the pressure regulating device, ensuring that the connection is reliable and leak-free. Turn on the oxygen source and slowly rotate the pressure regulating handwheel to start filling the chamber with oxygen. By observing the reading of the pressure gauge inside the chamber, adjust the rotation angle of the pressure regulating handwheel to adjust the pressure inside the chamber to the required treatment pressure value. The entire inflation process should be carried out slowly to avoid rapid pressure changes that could impact the equipment. Before entering the treatment chamber, the patient should carefully understand the treatment procedure and precautions, confirm that their physical condition is suitable for hyperbaric oxygen therapy, and maintain a comfortable position inside the chamber, avoiding strenuous activity. During treatment, the operator should closely monitor the patient's condition through the observation window assembly, take appropriate measures immediately if any abnormalities are found, and monitor the changes in pressure and temperature inside the chamber, adjusting the pressure value in a timely manner according to the requirements of the treatment plan. After treatment, the pressure inside the chamber should be reduced slowly by gradually releasing the gas using the pressure regulating handwheel. The depressurization process should be smooth to avoid sudden pressure drops that could cause discomfort to the patient. Once the pressure inside the chamber has dropped to normal atmospheric pressure, open the sealed cover and assist the patient to safely exit the treatment chamber. After use, the treatment chamber should be cleaned and disinfected, and the working status of all components should be checked. Any problems found should be repaired or replaced promptly. The pressure regulating device should be calibrated regularly to ensure accurate pressure control. Sealing components should be inspected and maintained to ensure the equipment's sealing performance. The entire operation should be strictly performed according to the operating procedures to ensure treatment safety and extend the equipment's lifespan.

Claims

1. A pressure regulating mechanism for an oxygen therapy chamber, characterized in that, include: Treatment chamber, sealed cover, pressure regulating device, support base, observation window assembly, and safety valve assembly; The treatment chamber has an elliptical cylindrical structure with a hatch at one end, sealed with a sealing cover by a rubber sealing ring. The sealing cover has a hemispherical structure, and a pressure regulating device is fixedly installed at its geometric center. The pressure regulating device includes a pressure regulating valve body, a pressure regulating handwheel, and a connecting pipe. The pressure regulating valve body is fixed to the sealing cover by a threaded connection. The pressure regulating handwheel is installed on the top of the pressure regulating valve body and is driven by a pressure regulating mechanism inside the valve body via a rotating shaft. One end of the connecting pipe is threaded to the side air inlet of the pressure regulating valve body. The bottom of the treatment chamber is fixed to a support base by multiple support bolts. The support base has a rectangular frame structure. An observation hole is provided on the side wall of the treatment chamber, and an observation window assembly is installed at the observation hole. The observation window assembly includes a transparent window and a sealing frame. The transparent window is embedded in the sealing frame by a sealing strip, and the sealing frame is fixed to the observation hole by a flange connection. A safety valve assembly is also provided on the top of the treatment chamber, and is installed on the safety valve interface on the top of the treatment chamber by a threaded connection.

2. The pressure regulating mechanism for an oxygen therapy chamber according to claim 1, characterized in that, The support base includes a front support beam, a rear support beam, and left and right side support beams; the front support beam and the rear support beam are arranged in parallel, and the left and right side support beams are respectively connected to the two ends of the front support beam and the rear support beam to form a rectangular frame; a front support column is provided extending upward from the middle of the front support beam, and a rear support column is provided extending upward from the middle of the rear support beam; the tops of the front support column and the rear support column are respectively tightly connected to the bottom circumferential surface of the treatment chamber by U-shaped clamps.

3. The pressure regulating mechanism for an oxygen therapy chamber according to claim 2, characterized in that, The inner wall of the treatment chamber is provided with an arc-shaped ridge structure; the arc-shaped ridge structure includes multiple arc-shaped ridges extending along the axial direction of the treatment chamber, each arc-shaped ridge has a semi-circular cross-section, the arc-shaped ridges are evenly distributed in the circumferential direction of the inner wall of the treatment chamber, and an arc-shaped groove is formed between two adjacent arc-shaped ridges; the height of the arc-shaped ridge is 5 mm to 15 mm, and the width of the arc-shaped ridge is 8 mm to 20 mm.

4. The pressure regulating mechanism for an oxygen therapy chamber according to claim 3, characterized in that, The inner surface of the sealing cover is provided with an annular sealing groove; the annular sealing groove is 10 mm to 30 mm away from the edge of the sealing cover, the width of the annular sealing groove is 6 mm to 12 mm, and the depth is 3 mm to 8 mm; an O-ring is installed in the annular sealing groove, and the O-ring is made of silicone rubber; the sealing cover is connected to the hatch flange of the treatment chamber by a plurality of evenly distributed locking bolts, the number of which is 8 to 12.

5. The pressure regulating mechanism for an oxygen therapy chamber according to claim 4, characterized in that, The transparent window of the observation window assembly is made of tempered glass with a thickness of 20 mm to 40 mm; the sealing frame is made of stainless steel, with its outer diameter matching the inner diameter of the observation hole, and its inner diameter being 2 mm to 5 mm smaller than the diameter of the transparent window; the sealing strip is made of fluororubber, and has a ring-shaped structure that fits tightly against the periphery of the transparent window.

6. The pressure regulating mechanism for an oxygen therapy chamber according to claim 5, characterized in that, The pressure regulating valve body contains a valve core and a spring assembly. The valve core has a cylindrical structure, with one end connected to the shaft of the pressure regulating handwheel via a thread, and the other end having a sealing cone surface. The spring assembly includes a compression spring and a spring seat, with one end of the compression spring abutting against the spring seat and the other end abutting against the annular boss in the middle of the valve core. When the pressure regulating handwheel is rotated clockwise, the valve core moves downward to compress the spring, increasing the sealing degree between the sealing cone surface and the valve seat, thereby reducing the gas flow rate through the pressure regulating valve body.

7. The pressure regulating mechanism for an oxygen therapy chamber according to claim 6, characterized in that, The outer surface of the treatment chamber is provided with multiple heat dissipation ridges.

8. The pressure regulating mechanism for an oxygen therapy chamber according to claim 7, characterized in that, The heat dissipation ridge has a triangular cross-sectional structure.

9. The pressure regulating mechanism for an oxygen therapy chamber according to claim 8, characterized in that, The treatment chamber is made of aluminum alloy.

10. The pressure regulating mechanism for an oxygen therapy chamber according to claim 9, characterized in that, The number of heat dissipation ridges is 20 to 30, and the multiple heat dissipation ridges are equidistantly distributed along the axial direction on the outer surface of the treatment chamber.

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