Carbon dioxide absorption device capable of being used for medical hyperbaric oxygen chamber

Abstract

The invention discloses a carbon dioxide absorption device capable of being used for a medical hyperbaric oxygen chamber, and relates to the technical field of carbon dioxide absorption devices.The carbon dioxide absorption device comprises a device shell, an air pump is installed in the middle of the interior of the device shell, and a purification bottle is fixedly installed on the surface of the side wall of one side of the interior of the device shell through bolts; a carbon dioxide absorption bottle is fixedly mounted on the side wall of the other side in the device shell through bolts, and an air inlet and an air outlet are formed in the two sides of the top of the air pump correspondingly; through the arrangement of the control circuit board, the carbon dioxide absorption bottle, the purification bottle and the air pump which are arranged on the device shell, when the medical hyperbaric oxygen chamber is used, the specific use condition can be judged according to the concentration of carbon dioxide in the medical hyperbaric oxygen chamber; therefore, carbon dioxide in the medical hyperbaric oxygen chamber is selectively exhausted or mixed into gas to complete treatment of a patient in a matched mode, and the practicability of the medical hyperbaric oxygen chamber in the specific using process is improved.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide absorption device technology, specifically a carbon dioxide absorption device that can be used in medical hyperbaric oxygen chambers. Background Technology

[0002] It's worth noting that during hyperbaric oxygen therapy, patients must enter the chamber. Without processing the patient's exhaled air, the carbon dioxide level inside the chamber rises rapidly. This prolonged exposure to a high concentration of carbon dioxide poses life-threatening risks, such as respiratory acidosis and central nervous system asphyxiation. Currently, hyperbaric oxygen chambers address the carbon dioxide issue in two ways: one is through a dynamic ventilation system that continuously supplies fresh high-pressure oxygen or compressed air while expelling the patient's exhaled air (containing carbon dioxide); the other is through therapeutic gas management, which actively and precisely adds carbon dioxide to the chamber in a specific ratio to form a therapeutic mixture with oxygen. The first method is difficult to precisely control the carbon dioxide concentration, and with frequent ventilation, the gas may not be fully utilized before being expelled, increasing gas waste and costs. The second method uses carbon dioxide for treatment, but carbon dioxide therapy is not suitable for all patients and can cause discomfort or even life-threatening risks for some users sensitive to changes in carbon dioxide levels.

[0003] To address this issue, we propose a carbon dioxide absorption device that can be used in medical hyperbaric oxygen chambers. Summary of the Invention

[0004] Technical problems to be solved In view of this, and in view of the shortcomings of the prior art, the present invention provides a carbon dioxide absorption device that can be used in a medical hyperbaric oxygen chamber to solve the problems mentioned in the background art. Technical solution

[0005] To achieve the above objectives, the present invention provides the following technical solution: a carbon dioxide absorption device for use in a medical hyperbaric oxygen chamber, comprising a device shell, an air pump installed in the middle of the inner part of the device shell, a purification bottle fixedly installed on one side wall of the inner part of the device shell by bolts, and a carbon dioxide absorption bottle fixedly installed on the other side wall of the inner part of the device shell by bolts. An air inlet and an air outlet are respectively provided on the top two sides of the air pump. Both the purification bottle and the carbon dioxide absorption bottle are provided with a top outlet and a bottom inlet. The top air inlet of the air pump is used to connect to the carbon dioxide outlet of the medical hyperbaric oxygen chamber via a pipe. A second air tube is fixedly installed between the top outlet of the air pump and the bottom inlet of the carbon dioxide absorption bottle. A first air tube is fixedly connected between the bottom inlet of the carbon dioxide absorption bottle and the bottom inlet of the purification bottle. The top inlet of the purification bottle is connected to the carbon dioxide inlet of the medical hyperbaric oxygen chamber. The device also includes a layered filtration assembly, a mixing assembly, and a reflux assembly disposed inside the carbon dioxide absorption bottle. The stratified filtration assembly is used to filter and absorb carbon dioxide introduced into the carbon dioxide absorption bottle in stratified layers. The stratified filtration assembly includes a limiting sleeve, filter elements, a mixing sleeve, a connecting plate, and a mixing baffle. The limiting sleeve is vertically slidably installed on the inner wall of the carbon dioxide absorption bottle; Multiple filter elements are slidably installed inside the limiting sleeve along the vertical direction; Each mixing sleeve is positioned between two adjacent filter elements, and the mixing sleeves are slidably connected to the interior of the filter elements. The connecting plates are fixedly installed in a circumferential array on the inner wall surface of the mixing sleeve; The mixing baffle is fixedly connected to the side surface of the connecting plate away from the inner wall of the mixing sleeve; The mixing assembly is used to mix the carbon dioxide-containing gas inside the carbon dioxide absorption bottle with the refluxed gas. The reflux assembly works in conjunction with the stratified filtration assembly to guide the carbon dioxide-containing gas that has undergone the initial stratified filtration back into the circulation system, and then back into the mixing assembly to mix with the carbon dioxide-containing gas that has not undergone the initial stratified filtration, and then undergo filtration again.

[0006] Preferably, the stratified filter assembly further includes a compression sleeve, a fixing sleeve, a mixing channel, and a baffle plate; The extrusion sleeve is slidably installed inside the top of the limiting sleeve; The fixed sleeve is rotatably mounted on the top surface of the extrusion sleeve; The mixing channel is opened at the center of the top of the fixed sleeve; The spoiler is fixedly installed on the bottom surface of the inner wall of the fixed sleeve.

[0007] Preferably, among the multiple filter elements arranged vertically, the distance between two adjacent filter elements gradually increases from top to bottom. The mixing sleeve is provided with a filter channel through it. The connecting plate in each mixing sleeve is arranged around the filter channel. The shape of each connecting plate is set as trapezoidal. The bottom of the mixing baffle is arc-shaped. The surfaces of adjacent connecting plates and the mixing baffle together form a filter disturbance channel.

[0008] Preferably, the extrusion sleeve is hollow inside, the top outer surface of the fixed sleeve is threaded to the top inner surface of the limiting sleeve, the top of the mixing channel is trapezoidal, the bottom surface of the baffle is arc-shaped, and the baffle is located directly below the mixing channel.

[0009] Preferably, the mixing assembly includes a return sleeve, a gas flow channel, a diffusion sleeve, a diffusion channel, and a mixing channel; The reflux sleeve is fixedly installed inside the bottom end of the carbon dioxide absorption bottle; The gas flow channel is located at the center of the return sleeve; The diffusion sleeve is fixedly installed inside the carbon dioxide absorption bottle, and the diffusion sleeve is located above the reflux sleeve; The diffusion channel is located inside the bottom end of the diffusion sleeve; The mixing channel runs through the interior of the diffusion sleeve.

[0010] Preferably, the bottom of the gas flow channel is connected to the bottom inlet of the carbon dioxide absorption bottle, and the top of the diffuser sleeve abuts against the bottom surface of the bottommost filter element.

[0011] Preferably, there are three diffusion channels arranged horizontally, and the inner diameter of the diffusion channel located at the center is three times the inner diameter of the diffusion channels located on both sides. The mixing channel, diffusion channel and gas flow channel arranged vertically from top to bottom are interconnected.

[0012] Preferably, the reflux assembly includes a reflux hole, a reflux pipe, an inclined reflux channel, and a connecting hole; The reflux holes are arranged in a circumferential array and are opened through the inside of the side wall of the extrusion sleeve; The reflux pipes are fixedly installed in a circular array inside the carbon dioxide absorption bottle; The inclined return channels are arranged in a circular array and are opened throughout the interior of the return sleeve; The connecting holes are arranged in a circular array and are opened throughout the interior of the return sleeve.

[0013] Preferably, the return pipe is used to connect the return hole and the inclined return channel, and the return hole is located below the baffle.

[0014] Preferably, the inclined return channel consists of a right-angle channel and an inclined channel that are interconnected.

[0015] Compared with the prior art, the present invention provides a carbon dioxide absorption device that can be used in a medical hyperbaric oxygen chamber, which has the following beneficial effects: By incorporating a control circuit board, carbon dioxide absorption bottle, purification bottle, and air pump on the outer casing of the device, the medical hyperbaric oxygen chamber can determine its specific usage based on the concentration of carbon dioxide within the chamber. This allows for selective removal of carbon dioxide or its mixing into the gas to aid in patient treatment, thereby increasing the practicality of the medical hyperbaric oxygen chamber in practical applications.

[0016] By setting up multiple layers of filters, it is easy to absorb carbon dioxide gas contained in the exhaust gas, and the treatment of carbon dioxide in the gas is repeated. At the same time, the distance between adjacent filters arranged vertically from bottom to top gradually increases, which can effectively control the gas flow path and ensure that the gas passes through all filter media more evenly. This helps to reduce the phenomenon of excessively high or low local flow rates, thereby improving the overall filtration efficiency.

[0017] The design of reflux holes, reflux pipes, and inclined reflux channels facilitates the re-entry of the gas after initial treatment into the circulation system, thereby completing the reflux operation of the treated gas. The gas is then mixed with the continuously introduced gas and subjected to mixing and filtration operations again, thus repeating the cycle to ensure the complete removal of carbon dioxide from the gas.

[0018] The diffusion channel and mixing channel facilitate thorough gas mixing, thereby mixing the continuously supplied gas with the returned gas. Combined with the multiple filter elements, this ensures effective absorption of carbon dioxide.

[0019] The diffusion channel facilitates the diversion of the incoming gas. Following the flow of the diffusion channel, the diffusion channels on both sides will directly contact the bottom arc-shaped sidewall of the mixing channel. After the backflow is blocked by the arc-shaped sidewall, the gas flowing in the central diffusion channel is mixed again, thus fully completing the gas mixing operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 For the present invention Figure 1 Another perspective structural diagram; Figure 3 This is a schematic diagram of the internal cross-sectional structure of the carbon dioxide absorption bottle of the present invention; Figure 4 This is a schematic diagram showing the positional relationship of the fixed sleeve in this invention; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the fixing sleeve of the present invention; Figure 6 This is a schematic cross-sectional view of the overall internal structure of the carbon dioxide absorption bottle of the present invention; Figure 7 This is a schematic diagram showing the positional relationship of the filter element in this invention; Figure 8 This is a schematic diagram showing the positional relationship at the diffusion sleeve of the present invention; Figure 9 This is a schematic diagram showing the positional relationship of the connecting plate in this invention.

[0021] In the diagram: 11. Device casing; 12. Air pump; 13. Purification bottle; 14. Carbon dioxide absorption bottle; 15. Air tube one; 16. Air tube two; 21. Limiting sleeve; 22. Filter element; 23. Mixing sleeve; 24. Connecting plate; 25. Mixing baffle; 26. Extrusion sleeve; 27. Fixing sleeve; 28. Mixing channel; 29. ​​Baffle plate; 31. Reflux sleeve; 32. Gas flow channel; 33. Diffusion sleeve; 34. Diffusion channel; 35. Mixing channel; 41. Return hole; 42. Return pipe; 43. Inclined return channel; 44. Connecting hole. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Embodiments of the present invention Please see Figures 1 to 9A carbon dioxide absorption device for use in a medical hyperbaric oxygen chamber includes a housing 11, an air pump 12 installed in the center of the housing 11, a purification bottle 13 fixedly installed on one side wall of the housing 11 by bolts, and a carbon dioxide absorption bottle 14 fixedly installed on the other side wall of the housing 11 by bolts. The air pump 12 has an air inlet and an air outlet on its top two sides, respectively. Both the purification bottle 13 and the carbon dioxide absorption bottle 14 have a top outlet and a bottom inlet. The top inlet of the air pump 12 is connected to the carbon dioxide outlet of the medical hyperbaric oxygen chamber via a pipe. A second air tube 16 is fixedly installed between the top outlet of the air pump 12 and the bottom inlet of the carbon dioxide absorption bottle 14. A first air tube 15 is fixedly connected between the bottom inlet of the carbon dioxide absorption bottle 14 and the bottom inlet of the purification bottle 13. The top inlet of the purification bottle 13 is connected to the carbon dioxide inlet of the medical hyperbaric oxygen chamber. The device also includes a layered filtration assembly, a mixing assembly, and a reflux assembly disposed inside the carbon dioxide absorption bottle 14.

[0024] The stratified filtration assembly is used to filter and absorb carbon dioxide introduced into the carbon dioxide absorption bottle 14 in stratified manner.

[0025] The layered filtration assembly includes a limiting sleeve 21, a filter element 22, a mixing sleeve 23, a connecting plate 24, and a mixing baffle 25.

[0026] The limiting sleeve 21 is vertically slidably installed on the inner wall of the carbon dioxide absorption bottle 14.

[0027] Multiple filter elements 22 are slidably installed inside the limiting sleeve 21 along the vertical direction.

[0028] Each mixing sleeve 23 is disposed between two adjacent filter elements 22, and the mixing sleeve 23 is slidably connected to the inside of the filter element 22.

[0029] The connecting plates 24 are fixedly installed in a circumferential array on the inner wall surface of the mixing sleeve 23.

[0030] The mixing baffle 25 is fixedly connected to the side surface of the connecting plate 24 away from the inner wall of the mixing sleeve 23.

[0031] The layered filter assembly also includes a compression sleeve 26, a fixing sleeve 27, a mixing channel 28, and a baffle plate 29.

[0032] The extrusion sleeve 26 is slidably installed inside the top of the limiting sleeve 21.

[0033] The fixed sleeve 27 is rotatably mounted on the top surface of the extrusion sleeve 26.

[0034] The mixing channel 28 is opened through the center of the top of the fixed sleeve 27.

[0035] The spoiler 29 is fixedly installed on the bottom surface of the inner wall of the fixed sleeve 27.

[0036] Among them, the distance between two adjacent filter elements 22 arranged vertically gradually increases from top to bottom. The mixing sleeve 23 is provided with a filter channel through it. The connecting plate 24 in each mixing sleeve 23 is arranged around the filter channel. The shape of each connecting plate 24 is set as trapezoidal. The bottom of the mixing baffle 25 is arc-shaped. The adjacent connecting plates 24 and the surface of the mixing baffle 25 together form a filter disturbance channel.

[0037] The extrusion sleeve 26 is hollow inside. The top outer surface of the fixed sleeve 27 is threadedly installed between the top inner surface of the limiting sleeve 21. The top of the mixing channel 28 is trapezoidal. The bottom surface of the baffle 29 is arc-shaped and the baffle 29 is located directly below the mixing channel 28.

[0038] In an alternative embodiment, see [reference] Figure 1 as well as Figure 2 The medical hyperbaric oxygen chamber is equipped with a carbon dioxide sensor to sense the carbon dioxide concentration inside the chamber. A control circuit board is installed on the outer shell 11 of the device. The air pump 12 is electrically connected to the control circuit board and its function is to provide power for the gas path of the entire device, so that the gas inside the chamber can be extracted from the chamber and pass through the carbon dioxide absorption bottle 14, then through the purification bottle 13, and finally return to the chamber from the air inlet outside the chamber.

[0039] The control circuit board connects the carbon dioxide sensor inside the chamber and the control circuit of the air pump 12. Its main function is to dynamically turn the air pump 12 on and off based on the carbon dioxide concentration information in the chamber fed back by the carbon dioxide sensor, thereby controlling whether the entire carbon dioxide absorption device works and ensuring that the carbon dioxide content in the chamber reaches the preset value. It should be noted that the above steps are all existing technologies, so they will not be elaborated on here.

[0040] In an alternative embodiment, see [reference] Figure 6 as well as Figure 7 Carbon dioxide absorption bottle 14 and purification bottle 13 are humidification bottles, and the humidification bottle can be replaced by a sealed container that can hold solids, including but not limited to gas canisters and acrylic sheet sealed square boxes.

[0041] In an alternative embodiment, see [reference] Figure 7The filter element 22 is filled with a carbon dioxide absorbent, which is a mixture of alkaline substances such as calcium hydroxide, sodium hydroxide, potassium hydroxide, and lithium hydroxide, or their corresponding alkaline dry granules. At the same time, the carbon dioxide absorbent can be replaced by other materials with certain carbon dioxide absorption functions, including but not limited to amines.

[0042] In an alternative embodiment, see [reference] Figure 1 The purification bottle 13 is filled with a material for removing carbon dioxide absorbent. The material for removing carbon dioxide absorbent is a mixture of citric acid and acids such as acetic acid, nitric acid, hydrochloric acid, and sulfuric acid. At the same time, this mixture can be replaced by other substances that can dissolve, adsorb, or react with the carbon dioxide absorbent. The purification bottle 13 is used to further treat the gas after it has been treated by the carbon dioxide absorption bottle 14.

[0043] In an alternative embodiment, see [reference] Figure 6 and Figure 7 When the gas passes through the multi-layer filter element 22, the carbon dioxide gas contained inside will be absorbed and filtered by the carbon dioxide absorbent. The multi-layer filter element 22 facilitates the repeated absorption of carbon dioxide in the gas. At the same time, the distance between adjacent filter elements 22 arranged vertically from bottom to top gradually increases, which can effectively control the gas flow path and ensure more uniform passage through all filter media. This helps to reduce the phenomenon of excessively high or low local flow rates, thereby improving the overall filtration efficiency.

[0044] The mixing sleeve 23 between two adjacent filter elements 22 agitates the gas filtered by the filter element 22. Specifically, the gas filtered by the filter element 22 comes into contact with the bottom surface of the arc-shaped mixing baffle 25 and flows along the arc-shaped surface. Through the smooth surface transition, the resistance caused by the sudden change in airflow direction can be reduced. Then, the gas enters the bottom of another filter element 22 through the filtering agitation channel formed by the surface of the adjacent connecting plate 24 and the mixing baffle 25 for filtration.

[0045] It should be noted that, in the above process, the arc-shaped surface at the bottom of the mixing baffle 25 can prolong the gas residence time, increase the contact opportunity with the treatment medium in the subsequent filter element 22, and improve the reaction or purification efficiency. At the same time, the mixing baffle 25 cooperates with the connecting plate 24 to agitate the filtered gas again, so as to facilitate full contact with the next filter element 22 and complete the adsorption treatment of carbon dioxide.

[0046] In an alternative embodiment, see [reference] Figure 5 and Figure 6The threaded connection between the fixed sleeve 27 and the inner wall of the top of the carbon dioxide absorption bottle 14 can restrict the position of the limiting sleeve 21 by squeezing the sleeve 26. After long-term use, the carbon dioxide absorption bottle 14 can be disassembled and the threaded installation between the carbon dioxide absorption bottle 14 and the fixed sleeve 27 can be released. Then the limiting sleeve 21 can be taken out and the multiple filter elements 22 that are slidably connected inside the limiting sleeve 21 can be replaced.

[0047] In an alternative embodiment, see [reference] Figure 6 and Figure 7 The upper surface of the filter element 22 is designed to be arc-shaped. During daily use, the gas contains some water vapor. After long-term use, the long-term contact between the gas and the mixing baffle 25 will cause water vapor to adhere to the surface of the mixing baffle 25 and gradually drip onto the upper surface of the filter element 22. At this time, the condensate will slide to the edge of the filter element 22 through the arc-shaped surface, thereby preventing the condensate from penetrating into the interior of the filter element 22 and affecting the performance of the filter element 22.

[0048] Further embodiments Please see Figure 3 , Figure 6 and Figure 8 The carbon dioxide absorption device that can be used in medical hyperbaric oxygen chambers also includes a mixing component, which is used to mix the carbon dioxide-containing gas inside the carbon dioxide absorption bottle 14 with the refluxed gas.

[0049] The mixing assembly includes a return sleeve 31, a gas flow channel 32, a diffusion sleeve 33, a diffusion channel 34, and a mixing channel 35.

[0050] The reflux sleeve 31 is fixedly installed inside the bottom end of the carbon dioxide absorption bottle 14.

[0051] The gas flow channel 32 is located at the center of the return sleeve 31.

[0052] The diffusion sleeve 33 is fixedly installed inside the carbon dioxide absorption bottle 14, and the diffusion sleeve 33 is located above the reflux sleeve 31.

[0053] The diffusion channel 34 is located inside the bottom end of the diffusion sleeve 33.

[0054] The mixing channel 35 extends through the interior of the diffusion sleeve 33.

[0055] The bottom of the gas flow channel 32 is connected to the bottom inlet of the carbon dioxide absorption bottle 14, and the top of the diffusion sleeve 33 is in contact with the bottom surface of the filter element 22 located at the bottom.

[0056] Among them, there are three diffusion channels 34 arranged horizontally, and the inner diameter of the diffusion channel 34 located in the center is three times the inner diameter of the diffusion channels 34 located on both sides. The mixing channel 35, diffusion channel 34 and gas flow channel 32 arranged vertically from top to bottom are interconnected.

[0057] In an alternative embodiment, see [reference] Figure 8 As the gas flows through the gas flow channel 32 into the diffusion channel 34 and then into the mixing channel 35, since there are three diffusion channels 34 arranged horizontally, and the inner diameter of the diffusion channel 34 located in the center is three times the inner diameter of the diffusion channels 34 located on both sides, the gas flow rate in the diffusion channel 34 located in the center is much greater than the gas flow rate in the diffusion channels 34 located on both sides when the gas passes through the diffusion channel 34.

[0058] It should be noted that the diffusion channel 34 is composed of a trapezoidal channel and a cylindrical channel. The bottom inner wall of the mixing channel 35 is set in an arc shape, and the arc-shaped surface is located directly above the two diffusion channels 34 on both sides. Therefore, the gas flowing through the two diffusion channels 34 on both sides will directly contact the bottom surface of the mixing channel 35. After the backflow is blocked by the bottom surface of the mixing channel 35 and with the continuous input of subsequent gas, it will then be randomly mixed with the gas flowing through the central diffusion channel 34, thereby fully mixing the gas and increasing its efficiency in absorbing carbon dioxide when it comes into contact with the filter element 22.

[0059] In an alternative embodiment, see [reference] Figure 8 The mixing channel 35 is used to thoroughly mix the gas and mix the gas from the initial treatment with the refluxed gas in subsequent processing and then perform carbon dioxide absorption treatment again.

[0060] Further embodiments Please see Figures 3 to 6 and Figure 8 The carbon dioxide absorption device that can be used in medical hyperbaric oxygen chambers also includes a reflux assembly. The reflux assembly works in conjunction with the stratified filtration assembly to guide the carbon dioxide-containing gas that has undergone the initial stratified filtration back into the circulation, and then back into the mixing assembly to mix with the carbon dioxide-containing gas that has not undergone the initial stratified filtration, and then undergo filtration again.

[0061] The reflux assembly includes a reflux hole 41, a reflux pipe 42, an inclined reflux channel 43, and a connecting hole 44.

[0062] The return holes 41 are arranged in a circumferential array and are opened inside the side wall of the extrusion sleeve 26.

[0063] The return pipes 42 are fixedly installed in a circular array inside the carbon dioxide absorption bottle 14.

[0064] The inclined return channels 43 are arranged in a circular array and are opened through the interior of the return sleeve 31.

[0065] The connecting holes 44 are arranged in a circular array and are opened through the interior of the return sleeve 31.

[0066] The return pipe 42 is used to connect the return hole 41 and the inclined return channel 43. The return hole 41 is located below the baffle 29.

[0067] The inclined return channel 43 consists of a right-angle channel and an inclined channel that are interconnected.

[0068] In an alternative embodiment, see [reference] Figure 5 and Figure 6 The gas filtered by the filter element 22 will come into contact with the bottom surface of the baffle 29 and gradually diffuse inside the extrusion sleeve 26 due to the obstruction of the baffle 29. Some of the gas will be discharged through the mixing channel 28 and enter the purification bottle 13 through the top outlet of the carbon dioxide absorption bottle 14 and the second gas pipe 16. The other part of the gas will enter the inclined return channel 43 through the return hole 41 and the return pipe 42, and then enter the gas flow channel 32 through the connecting hole 44 for filtration again.

[0069] In an alternative embodiment, see [reference] Figure 6 After the refluxed gas is mixed with the continuously introduced gas through the diffusion channel 34 and the mixing channel 35, it is filtered again through the filter element 22. The above process is repeated as the gas is continuously introduced.

[0070] It should be noted that in the above process, the inclined return channel 43 consists of a right-angle channel and an inclined channel that are interconnected. When the return gas is mixed with the continuously introduced gas, the inclined channel is designed to prevent the continuously introduced gas from entering the interior of the inclined return channel 43 through the connecting hole 44, thereby preventing the continuously introduced gas from hindering the return of the treated gas to continue participating in the filtration operation.

[0071] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide absorption device usable for a medical hyperbaric chamber, characterized by: The utility model provides a carbon dioxide absorption device for medical hyperbaric oxygen chamber, including device shell (11), the middle part of inside device shell (11) is installed gas pump (12), one side wall surface in the inside device shell (11) is fixedly installed purification bottle (13) through bolt, the other side wall in the inside device shell (11) is fixedly installed carbon dioxide absorption bottle (14) through bolt, the top both sides of gas pump (12) are provided with air inlet and air outlet respectively, and the top output and bottom input of purification bottle (13) and carbon dioxide absorption bottle (14) are all provided with, the air inlet of gas pump (12) is used to be connected with the carbon dioxide outlet hole of medical hyperbaric oxygen chamber through pipeline, and the top air outlet of gas pump (12) and the bottom input of carbon dioxide absorption bottle (14) are fixedly installed gas tube two (16) between, the bottom input of carbon dioxide absorption bottle (14) and the bottom input of purification bottle (13) are fixedly connected with gas tube one (15) between, and the top input of purification bottle (13) is connected with the carbon dioxide inlet hole of medical hyperbaric oxygen chamber, further including the layered filtering subassembly, mixing flow subassembly and reflux subassembly of setting in carbon dioxide absorption bottle (14) inside, The layered filtering subassembly is used to carry out layered filtering absorption to the carbon dioxide led into the inside carbon dioxide absorption bottle (14); The layered filtering subassembly includes limiting sleeve (21), filter piece (22), mixing flow sleeve (23), connecting plate (24) and mixing flow baffle (25); The limiting sleeve (21) is vertically slidably installed on the inner wall of the carbon dioxide absorption bottle (14); A plurality of filter pieces (22) are slidably installed inside the limiting sleeve (21) along the vertical direction; Each mixing flow sleeve (23) is arranged between two adjacent filter pieces (22), and is slidably connected inside the filter piece (22); The connecting plate (24) is fixedly installed on the inner wall surface of the mixing flow sleeve (23) in a circumferential array; The mixing flow baffle (25) is fixedly connected to the side surface of the connecting plate (24) away from the inner wall of the mixing flow sleeve (23); The mixing flow subassembly is used to mix the carbon dioxide-containing gas inside the carbon dioxide absorption bottle (14) and the refluxed gas; The reflux subassembly cooperates with the layered filtering subassembly to guide the carbon dioxide-containing gas after the initial layered filtering to enter the cycle again, and then enters the mixing flow subassembly again, mixes with the carbon dioxide-containing gas without the initial layered filtering, and is filtered again.

2. The carbon dioxide absorption device for medical hyperbaric oxygen chamber according to claim 1, characterized in that: The layered filtering subassembly further includes an extrusion sleeve (26), a fixed sleeve (27), a mixing flow channel (28), and a spoiler (29); The extrusion sleeve (26) is slidably installed inside the top end of the limiting sleeve (21); The fixed sleeve (27) is rotatably installed on the top surface of the extrusion sleeve (26); The mixing flow channel (28) is centrally provided through the top end of the fixed sleeve (27); The spoiler (29) is fixedly installed on the surface of the inner wall bottom of the fixed sleeve (27).

3. The carbon dioxide absorption device for medical hyperbaric oxygen chamber according to claim 1, characterized in that: The distance between two adjacent filter pieces (22) gradually increases from top to bottom along the vertical direction, the filter passage is provided in the inside of the mixed flow sleeve (23), the connecting plate (24) in each mixed flow sleeve (23) is arranged around the filter passage, the shape of each connecting plate (24) is arranged as a trapezoid, the bottom of the mixed flow baffle (25) is in an arc shape, and the surfaces of the mixed flow baffle (25) and the adjacent connecting plates (24) jointly form the filter disturbance passage.

4. The carbon dioxide absorption device for medical hyperbaric oxygen chamber according to claim 2, characterized in that: The inside of the extrusion sleeve (26) is hollow, the top outer surface of the fixed sleeve (27) is threadedly installed between the top inner surface of the limiting sleeve (21), the top of the mixed flow passage (28) is arranged as a trapezoid, the bottom surface of the spoiler (29) is in an arc shape, and the spoiler (29) is arranged directly below the mixed flow passage (28).

5. The carbon dioxide absorption device for medical hyperbaric oxygen chamber according to claim 2, characterized in that: The mixed flow assembly comprises a backflow sleeve (31), a gas flow passage (32), a diffusion sleeve (33), a diffusion passage (34) and a mixing passage (35); The backflow sleeve (31) is fixedly installed in the inside of the bottom end of the carbon dioxide absorption bottle (14); The gas flow passage (32) is provided at the center of the backflow sleeve (31); The diffusion sleeve (33) is fixedly installed in the inside of the carbon dioxide absorption bottle (14), and the diffusion sleeve (33) is located above the backflow sleeve (31); The diffusion passage (34) is provided in the inside of the bottom end of the diffusion sleeve (33); The mixing passage (35) is provided in the inside of the diffusion sleeve (33).

6. The carbon dioxide absorption device according to claim 5, wherein: The bottom of the gas flow passage (32) is communicated with the bottom input port of the carbon dioxide absorption bottle (14), and the top of the diffusion sleeve (33) abuts against the bottom surface of the lowermost filter piece (22).

7. The carbon dioxide absorption device according to claim 5, wherein: The three diffusion passages (34) are arranged along the horizontal direction, the inner diameter of the diffusion passage (34) located at the center is three times that of the diffusion passages (34) located at the two sides, and the mixing passage (35), the diffusion passage (34) and the gas flow passage (32) are communicated along the vertical direction from top to bottom.

8. The carbon dioxide absorption device for medical hyperbaric oxygen chamber according to claim 5, characterized in that: The backflow assembly comprises a backflow hole (41), a backflow pipeline (42), an inclined backflow channel (43) and a communication hole (44); The backflow hole (41) is provided in the inside of the sidewall of the extrusion sleeve (26) in a circumferential array; The backflow pipeline (42) is fixedly installed in the inside of the carbon dioxide absorption bottle (14) in a circumferential array; The inclined backflow channel (43) is provided in the inside of the backflow sleeve (31) in a circumferential array; The communication hole (44) is provided in the inside of the backflow sleeve (31) in a circumferential array.

9. The carbon dioxide absorption device for use in a medical hyperbaric chamber according to claim 8, characterized in that: The backflow pipeline (42) is used for connecting the backflow hole (41) and the inclined backflow channel (43), and the backflow hole (41) is arranged below the spoiler (29).

10. The carbon dioxide absorption device for use in a medical hyperbaric chamber according to claim 8, characterized in that: The inclined backflow channel (43) comprises a right-angle channel and an inclined channel which are communicated with each other.

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